Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

197 files changed, 135473 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/display/dvo_ch7017.c b/drivers/gpu/drm/i915/display/dvo_ch7017.c
new file mode 100644
index 000000000..0589994dd
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/dvo_ch7017.c
@@ -0,0 +1,415 @@
+/*
+ * Copyright © 2006 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Eric Anholt <eric@anholt.net>
+ *
+ */
+
+#include "intel_display_types.h"
+#include "intel_dvo_dev.h"
+
+#define CH7017_TV_DISPLAY_MODE		0x00
+#define CH7017_FLICKER_FILTER		0x01
+#define CH7017_VIDEO_BANDWIDTH		0x02
+#define CH7017_TEXT_ENHANCEMENT		0x03
+#define CH7017_START_ACTIVE_VIDEO	0x04
+#define CH7017_HORIZONTAL_POSITION	0x05
+#define CH7017_VERTICAL_POSITION	0x06
+#define CH7017_BLACK_LEVEL		0x07
+#define CH7017_CONTRAST_ENHANCEMENT	0x08
+#define CH7017_TV_PLL			0x09
+#define CH7017_TV_PLL_M			0x0a
+#define CH7017_TV_PLL_N			0x0b
+#define CH7017_SUB_CARRIER_0		0x0c
+#define CH7017_CIV_CONTROL		0x10
+#define CH7017_CIV_0			0x11
+#define CH7017_CHROMA_BOOST		0x14
+#define CH7017_CLOCK_MODE		0x1c
+#define CH7017_INPUT_CLOCK		0x1d
+#define CH7017_GPIO_CONTROL		0x1e
+#define CH7017_INPUT_DATA_FORMAT	0x1f
+#define CH7017_CONNECTION_DETECT	0x20
+#define CH7017_DAC_CONTROL		0x21
+#define CH7017_BUFFERED_CLOCK_OUTPUT	0x22
+#define CH7017_DEFEAT_VSYNC		0x47
+#define CH7017_TEST_PATTERN		0x48
+
+#define CH7017_POWER_MANAGEMENT		0x49
+/** Enables the TV output path. */
+#define CH7017_TV_EN			(1 << 0)
+#define CH7017_DAC0_POWER_DOWN		(1 << 1)
+#define CH7017_DAC1_POWER_DOWN		(1 << 2)
+#define CH7017_DAC2_POWER_DOWN		(1 << 3)
+#define CH7017_DAC3_POWER_DOWN		(1 << 4)
+/** Powers down the TV out block, and DAC0-3 */
+#define CH7017_TV_POWER_DOWN_EN		(1 << 5)
+
+#define CH7017_VERSION_ID		0x4a
+
+#define CH7017_DEVICE_ID		0x4b
+#define CH7017_DEVICE_ID_VALUE		0x1b
+#define CH7018_DEVICE_ID_VALUE		0x1a
+#define CH7019_DEVICE_ID_VALUE		0x19
+
+#define CH7017_XCLK_D2_ADJUST		0x53
+#define CH7017_UP_SCALER_COEFF_0	0x55
+#define CH7017_UP_SCALER_COEFF_1	0x56
+#define CH7017_UP_SCALER_COEFF_2	0x57
+#define CH7017_UP_SCALER_COEFF_3	0x58
+#define CH7017_UP_SCALER_COEFF_4	0x59
+#define CH7017_UP_SCALER_VERTICAL_INC_0	0x5a
+#define CH7017_UP_SCALER_VERTICAL_INC_1	0x5b
+#define CH7017_GPIO_INVERT		0x5c
+#define CH7017_UP_SCALER_HORIZONTAL_INC_0	0x5d
+#define CH7017_UP_SCALER_HORIZONTAL_INC_1	0x5e
+
+#define CH7017_HORIZONTAL_ACTIVE_PIXEL_INPUT	0x5f
+/**< Low bits of horizontal active pixel input */
+
+#define CH7017_ACTIVE_INPUT_LINE_OUTPUT	0x60
+/** High bits of horizontal active pixel input */
+#define CH7017_LVDS_HAP_INPUT_MASK	(0x7 << 0)
+/** High bits of vertical active line output */
+#define CH7017_LVDS_VAL_HIGH_MASK	(0x7 << 3)
+
+#define CH7017_VERTICAL_ACTIVE_LINE_OUTPUT	0x61
+/**< Low bits of vertical active line output */
+
+#define CH7017_HORIZONTAL_ACTIVE_PIXEL_OUTPUT	0x62
+/**< Low bits of horizontal active pixel output */
+
+#define CH7017_LVDS_POWER_DOWN		0x63
+/** High bits of horizontal active pixel output */
+#define CH7017_LVDS_HAP_HIGH_MASK	(0x7 << 0)
+/** Enables the LVDS power down state transition */
+#define CH7017_LVDS_POWER_DOWN_EN	(1 << 6)
+/** Enables the LVDS upscaler */
+#define CH7017_LVDS_UPSCALER_EN		(1 << 7)
+#define CH7017_LVDS_POWER_DOWN_DEFAULT_RESERVED 0x08
+
+#define CH7017_LVDS_ENCODING		0x64
+#define CH7017_LVDS_DITHER_2D		(1 << 2)
+#define CH7017_LVDS_DITHER_DIS		(1 << 3)
+#define CH7017_LVDS_DUAL_CHANNEL_EN	(1 << 4)
+#define CH7017_LVDS_24_BIT		(1 << 5)
+
+#define CH7017_LVDS_ENCODING_2		0x65
+
+#define CH7017_LVDS_PLL_CONTROL		0x66
+/** Enables the LVDS panel output path */
+#define CH7017_LVDS_PANEN		(1 << 0)
+/** Enables the LVDS panel backlight */
+#define CH7017_LVDS_BKLEN		(1 << 3)
+
+#define CH7017_POWER_SEQUENCING_T1	0x67
+#define CH7017_POWER_SEQUENCING_T2	0x68
+#define CH7017_POWER_SEQUENCING_T3	0x69
+#define CH7017_POWER_SEQUENCING_T4	0x6a
+#define CH7017_POWER_SEQUENCING_T5	0x6b
+#define CH7017_GPIO_DRIVER_TYPE		0x6c
+#define CH7017_GPIO_DATA		0x6d
+#define CH7017_GPIO_DIRECTION_CONTROL	0x6e
+
+#define CH7017_LVDS_PLL_FEEDBACK_DIV	0x71
+# define CH7017_LVDS_PLL_FEED_BACK_DIVIDER_SHIFT 4
+# define CH7017_LVDS_PLL_FEED_FORWARD_DIVIDER_SHIFT 0
+# define CH7017_LVDS_PLL_FEEDBACK_DEFAULT_RESERVED 0x80
+
+#define CH7017_LVDS_PLL_VCO_CONTROL	0x72
+# define CH7017_LVDS_PLL_VCO_DEFAULT_RESERVED 0x80
+# define CH7017_LVDS_PLL_VCO_SHIFT	4
+# define CH7017_LVDS_PLL_POST_SCALE_DIV_SHIFT 0
+
+#define CH7017_OUTPUTS_ENABLE		0x73
+# define CH7017_CHARGE_PUMP_LOW		0x0
+# define CH7017_CHARGE_PUMP_HIGH	0x3
+# define CH7017_LVDS_CHANNEL_A		(1 << 3)
+# define CH7017_LVDS_CHANNEL_B		(1 << 4)
+# define CH7017_TV_DAC_A		(1 << 5)
+# define CH7017_TV_DAC_B		(1 << 6)
+# define CH7017_DDC_SELECT_DC2		(1 << 7)
+
+#define CH7017_LVDS_OUTPUT_AMPLITUDE	0x74
+#define CH7017_LVDS_PLL_EMI_REDUCTION	0x75
+#define CH7017_LVDS_POWER_DOWN_FLICKER	0x76
+
+#define CH7017_LVDS_CONTROL_2		0x78
+# define CH7017_LOOP_FILTER_SHIFT	5
+# define CH7017_PHASE_DETECTOR_SHIFT	0
+
+#define CH7017_BANG_LIMIT_CONTROL	0x7f
+
+struct ch7017_priv {
+	u8 dummy;
+};
+
+static void ch7017_dump_regs(struct intel_dvo_device *dvo);
+static void ch7017_dpms(struct intel_dvo_device *dvo, bool enable);
+
+static bool ch7017_read(struct intel_dvo_device *dvo, u8 addr, u8 *val)
+{
+	struct i2c_msg msgs[] = {
+		{
+			.addr = dvo->slave_addr,
+			.flags = 0,
+			.len = 1,
+			.buf = &addr,
+		},
+		{
+			.addr = dvo->slave_addr,
+			.flags = I2C_M_RD,
+			.len = 1,
+			.buf = val,
+		}
+	};
+	return i2c_transfer(dvo->i2c_bus, msgs, 2) == 2;
+}
+
+static bool ch7017_write(struct intel_dvo_device *dvo, u8 addr, u8 val)
+{
+	u8 buf[2] = { addr, val };
+	struct i2c_msg msg = {
+		.addr = dvo->slave_addr,
+		.flags = 0,
+		.len = 2,
+		.buf = buf,
+	};
+	return i2c_transfer(dvo->i2c_bus, &msg, 1) == 1;
+}
+
+/** Probes for a CH7017 on the given bus and slave address. */
+static bool ch7017_init(struct intel_dvo_device *dvo,
+			struct i2c_adapter *adapter)
+{
+	struct ch7017_priv *priv;
+	const char *str;
+	u8 val;
+
+	priv = kzalloc(sizeof(struct ch7017_priv), GFP_KERNEL);
+	if (priv == NULL)
+		return false;
+
+	dvo->i2c_bus = adapter;
+	dvo->dev_priv = priv;
+
+	if (!ch7017_read(dvo, CH7017_DEVICE_ID, &val))
+		goto fail;
+
+	switch (val) {
+	case CH7017_DEVICE_ID_VALUE:
+		str = "ch7017";
+		break;
+	case CH7018_DEVICE_ID_VALUE:
+		str = "ch7018";
+		break;
+	case CH7019_DEVICE_ID_VALUE:
+		str = "ch7019";
+		break;
+	default:
+		DRM_DEBUG_KMS("ch701x not detected, got %d: from %s "
+			      "slave %d.\n",
+			      val, adapter->name, dvo->slave_addr);
+		goto fail;
+	}
+
+	DRM_DEBUG_KMS("%s detected on %s, addr %d\n",
+		      str, adapter->name, dvo->slave_addr);
+	return true;
+
+fail:
+	kfree(priv);
+	return false;
+}
+
+static enum drm_connector_status ch7017_detect(struct intel_dvo_device *dvo)
+{
+	return connector_status_connected;
+}
+
+static enum drm_mode_status ch7017_mode_valid(struct intel_dvo_device *dvo,
+					      struct drm_display_mode *mode)
+{
+	if (mode->clock > 160000)
+		return MODE_CLOCK_HIGH;
+
+	return MODE_OK;
+}
+
+static void ch7017_mode_set(struct intel_dvo_device *dvo,
+			    const struct drm_display_mode *mode,
+			    const struct drm_display_mode *adjusted_mode)
+{
+	u8 lvds_pll_feedback_div, lvds_pll_vco_control;
+	u8 outputs_enable, lvds_control_2, lvds_power_down;
+	u8 horizontal_active_pixel_input;
+	u8 horizontal_active_pixel_output, vertical_active_line_output;
+	u8 active_input_line_output;
+
+	DRM_DEBUG_KMS("Registers before mode setting\n");
+	ch7017_dump_regs(dvo);
+
+	/* LVDS PLL settings from page 75 of 7017-7017ds.pdf*/
+	if (mode->clock < 100000) {
+		outputs_enable = CH7017_LVDS_CHANNEL_A | CH7017_CHARGE_PUMP_LOW;
+		lvds_pll_feedback_div = CH7017_LVDS_PLL_FEEDBACK_DEFAULT_RESERVED |
+			(2 << CH7017_LVDS_PLL_FEED_BACK_DIVIDER_SHIFT) |
+			(13 << CH7017_LVDS_PLL_FEED_FORWARD_DIVIDER_SHIFT);
+		lvds_pll_vco_control = CH7017_LVDS_PLL_VCO_DEFAULT_RESERVED |
+			(2 << CH7017_LVDS_PLL_VCO_SHIFT) |
+			(3 << CH7017_LVDS_PLL_POST_SCALE_DIV_SHIFT);
+		lvds_control_2 = (1 << CH7017_LOOP_FILTER_SHIFT) |
+			(0 << CH7017_PHASE_DETECTOR_SHIFT);
+	} else {
+		outputs_enable = CH7017_LVDS_CHANNEL_A | CH7017_CHARGE_PUMP_HIGH;
+		lvds_pll_feedback_div =
+			CH7017_LVDS_PLL_FEEDBACK_DEFAULT_RESERVED |
+			(2 << CH7017_LVDS_PLL_FEED_BACK_DIVIDER_SHIFT) |
+			(3 << CH7017_LVDS_PLL_FEED_FORWARD_DIVIDER_SHIFT);
+		lvds_control_2 = (3 << CH7017_LOOP_FILTER_SHIFT) |
+			(0 << CH7017_PHASE_DETECTOR_SHIFT);
+		if (1) { /* XXX: dual channel panel detection.  Assume yes for now. */
+			outputs_enable |= CH7017_LVDS_CHANNEL_B;
+			lvds_pll_vco_control = CH7017_LVDS_PLL_VCO_DEFAULT_RESERVED |
+				(2 << CH7017_LVDS_PLL_VCO_SHIFT) |
+				(13 << CH7017_LVDS_PLL_POST_SCALE_DIV_SHIFT);
+		} else {
+			lvds_pll_vco_control = CH7017_LVDS_PLL_VCO_DEFAULT_RESERVED |
+				(1 << CH7017_LVDS_PLL_VCO_SHIFT) |
+				(13 << CH7017_LVDS_PLL_POST_SCALE_DIV_SHIFT);
+		}
+	}
+
+	horizontal_active_pixel_input = mode->hdisplay & 0x00ff;
+
+	vertical_active_line_output = mode->vdisplay & 0x00ff;
+	horizontal_active_pixel_output = mode->hdisplay & 0x00ff;
+
+	active_input_line_output = ((mode->hdisplay & 0x0700) >> 8) |
+				   (((mode->vdisplay & 0x0700) >> 8) << 3);
+
+	lvds_power_down = CH7017_LVDS_POWER_DOWN_DEFAULT_RESERVED |
+			  (mode->hdisplay & 0x0700) >> 8;
+
+	ch7017_dpms(dvo, false);
+	ch7017_write(dvo, CH7017_HORIZONTAL_ACTIVE_PIXEL_INPUT,
+			horizontal_active_pixel_input);
+	ch7017_write(dvo, CH7017_HORIZONTAL_ACTIVE_PIXEL_OUTPUT,
+			horizontal_active_pixel_output);
+	ch7017_write(dvo, CH7017_VERTICAL_ACTIVE_LINE_OUTPUT,
+			vertical_active_line_output);
+	ch7017_write(dvo, CH7017_ACTIVE_INPUT_LINE_OUTPUT,
+			active_input_line_output);
+	ch7017_write(dvo, CH7017_LVDS_PLL_VCO_CONTROL, lvds_pll_vco_control);
+	ch7017_write(dvo, CH7017_LVDS_PLL_FEEDBACK_DIV, lvds_pll_feedback_div);
+	ch7017_write(dvo, CH7017_LVDS_CONTROL_2, lvds_control_2);
+	ch7017_write(dvo, CH7017_OUTPUTS_ENABLE, outputs_enable);
+
+	/* Turn the LVDS back on with new settings. */
+	ch7017_write(dvo, CH7017_LVDS_POWER_DOWN, lvds_power_down);
+
+	DRM_DEBUG_KMS("Registers after mode setting\n");
+	ch7017_dump_regs(dvo);
+}
+
+/* set the CH7017 power state */
+static void ch7017_dpms(struct intel_dvo_device *dvo, bool enable)
+{
+	u8 val;
+
+	ch7017_read(dvo, CH7017_LVDS_POWER_DOWN, &val);
+
+	/* Turn off TV/VGA, and never turn it on since we don't support it. */
+	ch7017_write(dvo, CH7017_POWER_MANAGEMENT,
+			CH7017_DAC0_POWER_DOWN |
+			CH7017_DAC1_POWER_DOWN |
+			CH7017_DAC2_POWER_DOWN |
+			CH7017_DAC3_POWER_DOWN |
+			CH7017_TV_POWER_DOWN_EN);
+
+	if (enable) {
+		/* Turn on the LVDS */
+		ch7017_write(dvo, CH7017_LVDS_POWER_DOWN,
+			     val & ~CH7017_LVDS_POWER_DOWN_EN);
+	} else {
+		/* Turn off the LVDS */
+		ch7017_write(dvo, CH7017_LVDS_POWER_DOWN,
+			     val | CH7017_LVDS_POWER_DOWN_EN);
+	}
+
+	/* XXX: Should actually wait for update power status somehow */
+	msleep(20);
+}
+
+static bool ch7017_get_hw_state(struct intel_dvo_device *dvo)
+{
+	u8 val;
+
+	ch7017_read(dvo, CH7017_LVDS_POWER_DOWN, &val);
+
+	if (val & CH7017_LVDS_POWER_DOWN_EN)
+		return false;
+	else
+		return true;
+}
+
+static void ch7017_dump_regs(struct intel_dvo_device *dvo)
+{
+	u8 val;
+
+#define DUMP(reg)					\
+do {							\
+	ch7017_read(dvo, reg, &val);			\
+	DRM_DEBUG_KMS(#reg ": %02x\n", val);		\
+} while (0)
+
+	DUMP(CH7017_HORIZONTAL_ACTIVE_PIXEL_INPUT);
+	DUMP(CH7017_HORIZONTAL_ACTIVE_PIXEL_OUTPUT);
+	DUMP(CH7017_VERTICAL_ACTIVE_LINE_OUTPUT);
+	DUMP(CH7017_ACTIVE_INPUT_LINE_OUTPUT);
+	DUMP(CH7017_LVDS_PLL_VCO_CONTROL);
+	DUMP(CH7017_LVDS_PLL_FEEDBACK_DIV);
+	DUMP(CH7017_LVDS_CONTROL_2);
+	DUMP(CH7017_OUTPUTS_ENABLE);
+	DUMP(CH7017_LVDS_POWER_DOWN);
+}
+
+static void ch7017_destroy(struct intel_dvo_device *dvo)
+{
+	struct ch7017_priv *priv = dvo->dev_priv;
+
+	if (priv) {
+		kfree(priv);
+		dvo->dev_priv = NULL;
+	}
+}
+
+const struct intel_dvo_dev_ops ch7017_ops = {
+	.init = ch7017_init,
+	.detect = ch7017_detect,
+	.mode_valid = ch7017_mode_valid,
+	.mode_set = ch7017_mode_set,
+	.dpms = ch7017_dpms,
+	.get_hw_state = ch7017_get_hw_state,
+	.dump_regs = ch7017_dump_regs,
+	.destroy = ch7017_destroy,
+};
diff --git a/drivers/gpu/drm/i915/display/dvo_ch7xxx.c b/drivers/gpu/drm/i915/display/dvo_ch7xxx.c
new file mode 100644
index 000000000..54f58ba44
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/dvo_ch7xxx.c
@@ -0,0 +1,367 @@
+/**************************************************************************
+
+Copyright © 2006 Dave Airlie
+
+All Rights Reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sub license, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice (including the
+next paragraph) shall be included in all copies or substantial portions
+of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+**************************************************************************/
+
+#include "intel_display_types.h"
+#include "intel_dvo_dev.h"
+
+#define CH7xxx_REG_VID		0x4a
+#define CH7xxx_REG_DID		0x4b
+
+#define CH7011_VID		0x83 /* 7010 as well */
+#define CH7010B_VID		0x05
+#define CH7009A_VID		0x84
+#define CH7009B_VID		0x85
+#define CH7301_VID		0x95
+
+#define CH7xxx_VID		0x84
+#define CH7xxx_DID		0x17
+#define CH7010_DID		0x16
+
+#define CH7xxx_NUM_REGS		0x4c
+
+#define CH7xxx_CM		0x1c
+#define CH7xxx_CM_XCM		(1<<0)
+#define CH7xxx_CM_MCP		(1<<2)
+#define CH7xxx_INPUT_CLOCK	0x1d
+#define CH7xxx_GPIO		0x1e
+#define CH7xxx_GPIO_HPIR	(1<<3)
+#define CH7xxx_IDF		0x1f
+
+#define CH7xxx_IDF_HSP		(1<<3)
+#define CH7xxx_IDF_VSP		(1<<4)
+
+#define CH7xxx_CONNECTION_DETECT 0x20
+#define CH7xxx_CDET_DVI		(1<<5)
+
+#define CH7301_DAC_CNTL		0x21
+#define CH7301_HOTPLUG		0x23
+#define CH7xxx_TCTL		0x31
+#define CH7xxx_TVCO		0x32
+#define CH7xxx_TPCP		0x33
+#define CH7xxx_TPD		0x34
+#define CH7xxx_TPVT		0x35
+#define CH7xxx_TLPF		0x36
+#define CH7xxx_TCT		0x37
+#define CH7301_TEST_PATTERN	0x48
+
+#define CH7xxx_PM		0x49
+#define CH7xxx_PM_FPD		(1<<0)
+#define CH7301_PM_DACPD0	(1<<1)
+#define CH7301_PM_DACPD1	(1<<2)
+#define CH7301_PM_DACPD2	(1<<3)
+#define CH7xxx_PM_DVIL		(1<<6)
+#define CH7xxx_PM_DVIP		(1<<7)
+
+#define CH7301_SYNC_POLARITY	0x56
+#define CH7301_SYNC_RGB_YUV	(1<<0)
+#define CH7301_SYNC_POL_DVI	(1<<5)
+
+/** @file
+ * driver for the Chrontel 7xxx DVI chip over DVO.
+ */
+
+static struct ch7xxx_id_struct {
+	u8 vid;
+	char *name;
+} ch7xxx_ids[] = {
+	{ CH7011_VID, "CH7011" },
+	{ CH7010B_VID, "CH7010B" },
+	{ CH7009A_VID, "CH7009A" },
+	{ CH7009B_VID, "CH7009B" },
+	{ CH7301_VID, "CH7301" },
+};
+
+static struct ch7xxx_did_struct {
+	u8 did;
+	char *name;
+} ch7xxx_dids[] = {
+	{ CH7xxx_DID, "CH7XXX" },
+	{ CH7010_DID, "CH7010B" },
+};
+
+struct ch7xxx_priv {
+	bool quiet;
+};
+
+static char *ch7xxx_get_id(u8 vid)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(ch7xxx_ids); i++) {
+		if (ch7xxx_ids[i].vid == vid)
+			return ch7xxx_ids[i].name;
+	}
+
+	return NULL;
+}
+
+static char *ch7xxx_get_did(u8 did)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(ch7xxx_dids); i++) {
+		if (ch7xxx_dids[i].did == did)
+			return ch7xxx_dids[i].name;
+	}
+
+	return NULL;
+}
+
+/** Reads an 8 bit register */
+static bool ch7xxx_readb(struct intel_dvo_device *dvo, int addr, u8 *ch)
+{
+	struct ch7xxx_priv *ch7xxx = dvo->dev_priv;
+	struct i2c_adapter *adapter = dvo->i2c_bus;
+	u8 out_buf[2];
+	u8 in_buf[2];
+
+	struct i2c_msg msgs[] = {
+		{
+			.addr = dvo->slave_addr,
+			.flags = 0,
+			.len = 1,
+			.buf = out_buf,
+		},
+		{
+			.addr = dvo->slave_addr,
+			.flags = I2C_M_RD,
+			.len = 1,
+			.buf = in_buf,
+		}
+	};
+
+	out_buf[0] = addr;
+	out_buf[1] = 0;
+
+	if (i2c_transfer(adapter, msgs, 2) == 2) {
+		*ch = in_buf[0];
+		return true;
+	}
+
+	if (!ch7xxx->quiet) {
+		DRM_DEBUG_KMS("Unable to read register 0x%02x from %s:%02x.\n",
+			  addr, adapter->name, dvo->slave_addr);
+	}
+	return false;
+}
+
+/** Writes an 8 bit register */
+static bool ch7xxx_writeb(struct intel_dvo_device *dvo, int addr, u8 ch)
+{
+	struct ch7xxx_priv *ch7xxx = dvo->dev_priv;
+	struct i2c_adapter *adapter = dvo->i2c_bus;
+	u8 out_buf[2];
+	struct i2c_msg msg = {
+		.addr = dvo->slave_addr,
+		.flags = 0,
+		.len = 2,
+		.buf = out_buf,
+	};
+
+	out_buf[0] = addr;
+	out_buf[1] = ch;
+
+	if (i2c_transfer(adapter, &msg, 1) == 1)
+		return true;
+
+	if (!ch7xxx->quiet) {
+		DRM_DEBUG_KMS("Unable to write register 0x%02x to %s:%d.\n",
+			  addr, adapter->name, dvo->slave_addr);
+	}
+
+	return false;
+}
+
+static bool ch7xxx_init(struct intel_dvo_device *dvo,
+			struct i2c_adapter *adapter)
+{
+	/* this will detect the CH7xxx chip on the specified i2c bus */
+	struct ch7xxx_priv *ch7xxx;
+	u8 vendor, device;
+	char *name, *devid;
+
+	ch7xxx = kzalloc(sizeof(struct ch7xxx_priv), GFP_KERNEL);
+	if (ch7xxx == NULL)
+		return false;
+
+	dvo->i2c_bus = adapter;
+	dvo->dev_priv = ch7xxx;
+	ch7xxx->quiet = true;
+
+	if (!ch7xxx_readb(dvo, CH7xxx_REG_VID, &vendor))
+		goto out;
+
+	name = ch7xxx_get_id(vendor);
+	if (!name) {
+		DRM_DEBUG_KMS("ch7xxx not detected; got VID 0x%02x from %s slave %d.\n",
+			      vendor, adapter->name, dvo->slave_addr);
+		goto out;
+	}
+
+
+	if (!ch7xxx_readb(dvo, CH7xxx_REG_DID, &device))
+		goto out;
+
+	devid = ch7xxx_get_did(device);
+	if (!devid) {
+		DRM_DEBUG_KMS("ch7xxx not detected; got DID 0x%02x from %s slave %d.\n",
+			      device, adapter->name, dvo->slave_addr);
+		goto out;
+	}
+
+	ch7xxx->quiet = false;
+	DRM_DEBUG_KMS("Detected %s chipset, vendor/device ID 0x%02x/0x%02x\n",
+		  name, vendor, device);
+	return true;
+out:
+	kfree(ch7xxx);
+	return false;
+}
+
+static enum drm_connector_status ch7xxx_detect(struct intel_dvo_device *dvo)
+{
+	u8 cdet, orig_pm, pm;
+
+	ch7xxx_readb(dvo, CH7xxx_PM, &orig_pm);
+
+	pm = orig_pm;
+	pm &= ~CH7xxx_PM_FPD;
+	pm |= CH7xxx_PM_DVIL | CH7xxx_PM_DVIP;
+
+	ch7xxx_writeb(dvo, CH7xxx_PM, pm);
+
+	ch7xxx_readb(dvo, CH7xxx_CONNECTION_DETECT, &cdet);
+
+	ch7xxx_writeb(dvo, CH7xxx_PM, orig_pm);
+
+	if (cdet & CH7xxx_CDET_DVI)
+		return connector_status_connected;
+	return connector_status_disconnected;
+}
+
+static enum drm_mode_status ch7xxx_mode_valid(struct intel_dvo_device *dvo,
+					      struct drm_display_mode *mode)
+{
+	if (mode->clock > 165000)
+		return MODE_CLOCK_HIGH;
+
+	return MODE_OK;
+}
+
+static void ch7xxx_mode_set(struct intel_dvo_device *dvo,
+			    const struct drm_display_mode *mode,
+			    const struct drm_display_mode *adjusted_mode)
+{
+	u8 tvco, tpcp, tpd, tlpf, idf;
+
+	if (mode->clock <= 65000) {
+		tvco = 0x23;
+		tpcp = 0x08;
+		tpd = 0x16;
+		tlpf = 0x60;
+	} else {
+		tvco = 0x2d;
+		tpcp = 0x06;
+		tpd = 0x26;
+		tlpf = 0xa0;
+	}
+
+	ch7xxx_writeb(dvo, CH7xxx_TCTL, 0x00);
+	ch7xxx_writeb(dvo, CH7xxx_TVCO, tvco);
+	ch7xxx_writeb(dvo, CH7xxx_TPCP, tpcp);
+	ch7xxx_writeb(dvo, CH7xxx_TPD, tpd);
+	ch7xxx_writeb(dvo, CH7xxx_TPVT, 0x30);
+	ch7xxx_writeb(dvo, CH7xxx_TLPF, tlpf);
+	ch7xxx_writeb(dvo, CH7xxx_TCT, 0x00);
+
+	ch7xxx_readb(dvo, CH7xxx_IDF, &idf);
+
+	idf &= ~(CH7xxx_IDF_HSP | CH7xxx_IDF_VSP);
+	if (mode->flags & DRM_MODE_FLAG_PHSYNC)
+		idf |= CH7xxx_IDF_HSP;
+
+	if (mode->flags & DRM_MODE_FLAG_PVSYNC)
+		idf |= CH7xxx_IDF_VSP;
+
+	ch7xxx_writeb(dvo, CH7xxx_IDF, idf);
+}
+
+/* set the CH7xxx power state */
+static void ch7xxx_dpms(struct intel_dvo_device *dvo, bool enable)
+{
+	if (enable)
+		ch7xxx_writeb(dvo, CH7xxx_PM, CH7xxx_PM_DVIL | CH7xxx_PM_DVIP);
+	else
+		ch7xxx_writeb(dvo, CH7xxx_PM, CH7xxx_PM_FPD);
+}
+
+static bool ch7xxx_get_hw_state(struct intel_dvo_device *dvo)
+{
+	u8 val;
+
+	ch7xxx_readb(dvo, CH7xxx_PM, &val);
+
+	if (val & (CH7xxx_PM_DVIL | CH7xxx_PM_DVIP))
+		return true;
+	else
+		return false;
+}
+
+static void ch7xxx_dump_regs(struct intel_dvo_device *dvo)
+{
+	int i;
+
+	for (i = 0; i < CH7xxx_NUM_REGS; i++) {
+		u8 val;
+		if ((i % 8) == 0)
+			DRM_DEBUG_KMS("\n %02X: ", i);
+		ch7xxx_readb(dvo, i, &val);
+		DRM_DEBUG_KMS("%02X ", val);
+	}
+}
+
+static void ch7xxx_destroy(struct intel_dvo_device *dvo)
+{
+	struct ch7xxx_priv *ch7xxx = dvo->dev_priv;
+
+	if (ch7xxx) {
+		kfree(ch7xxx);
+		dvo->dev_priv = NULL;
+	}
+}
+
+const struct intel_dvo_dev_ops ch7xxx_ops = {
+	.init = ch7xxx_init,
+	.detect = ch7xxx_detect,
+	.mode_valid = ch7xxx_mode_valid,
+	.mode_set = ch7xxx_mode_set,
+	.dpms = ch7xxx_dpms,
+	.get_hw_state = ch7xxx_get_hw_state,
+	.dump_regs = ch7xxx_dump_regs,
+	.destroy = ch7xxx_destroy,
+};
diff --git a/drivers/gpu/drm/i915/display/dvo_ivch.c b/drivers/gpu/drm/i915/display/dvo_ivch.c
new file mode 100644
index 000000000..f43d8c610
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/dvo_ivch.c
@@ -0,0 +1,503 @@
+/*
+ * Copyright © 2006 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Eric Anholt <eric@anholt.net>
+ *    Thomas Richter <thor@math.tu-berlin.de>
+ *
+ * Minor modifications (Dithering enable):
+ *    Thomas Richter <thor@math.tu-berlin.de>
+ *
+ */
+
+#include "intel_display_types.h"
+#include "intel_dvo_dev.h"
+
+/*
+ * register definitions for the i82807aa.
+ *
+ * Documentation on this chipset can be found in datasheet #29069001 at
+ * intel.com.
+ */
+
+/*
+ * VCH Revision & GMBus Base Addr
+ */
+#define VR00		0x00
+# define VR00_BASE_ADDRESS_MASK		0x007f
+
+/*
+ * Functionality Enable
+ */
+#define VR01		0x01
+
+/*
+ * Enable the panel fitter
+ */
+# define VR01_PANEL_FIT_ENABLE		(1 << 3)
+/*
+ * Enables the LCD display.
+ *
+ * This must not be set while VR01_DVO_BYPASS_ENABLE is set.
+ */
+# define VR01_LCD_ENABLE		(1 << 2)
+/* Enables the DVO repeater. */
+# define VR01_DVO_BYPASS_ENABLE		(1 << 1)
+/* Enables the DVO clock */
+# define VR01_DVO_ENABLE		(1 << 0)
+/* Enable dithering for 18bpp panels. Not documented. */
+# define VR01_DITHER_ENABLE             (1 << 4)
+
+/*
+ * LCD Interface Format
+ */
+#define VR10		0x10
+/* Enables LVDS output instead of CMOS */
+# define VR10_LVDS_ENABLE		(1 << 4)
+/* Enables 18-bit LVDS output. */
+# define VR10_INTERFACE_1X18		(0 << 2)
+/* Enables 24-bit LVDS or CMOS output */
+# define VR10_INTERFACE_1X24		(1 << 2)
+/* Enables 2x18-bit LVDS or CMOS output. */
+# define VR10_INTERFACE_2X18		(2 << 2)
+/* Enables 2x24-bit LVDS output */
+# define VR10_INTERFACE_2X24		(3 << 2)
+/* Mask that defines the depth of the pipeline */
+# define VR10_INTERFACE_DEPTH_MASK      (3 << 2)
+
+/*
+ * VR20 LCD Horizontal Display Size
+ */
+#define VR20	0x20
+
+/*
+ * LCD Vertical Display Size
+ */
+#define VR21	0x21
+
+/*
+ * Panel power down status
+ */
+#define VR30		0x30
+/* Read only bit indicating that the panel is not in a safe poweroff state. */
+# define VR30_PANEL_ON			(1 << 15)
+
+#define VR40		0x40
+# define VR40_STALL_ENABLE		(1 << 13)
+# define VR40_VERTICAL_INTERP_ENABLE	(1 << 12)
+# define VR40_ENHANCED_PANEL_FITTING	(1 << 11)
+# define VR40_HORIZONTAL_INTERP_ENABLE	(1 << 10)
+# define VR40_AUTO_RATIO_ENABLE		(1 << 9)
+# define VR40_CLOCK_GATING_ENABLE	(1 << 8)
+
+/*
+ * Panel Fitting Vertical Ratio
+ * (((image_height - 1) << 16) / ((panel_height - 1))) >> 2
+ */
+#define VR41		0x41
+
+/*
+ * Panel Fitting Horizontal Ratio
+ * (((image_width - 1) << 16) / ((panel_width - 1))) >> 2
+ */
+#define VR42		0x42
+
+/*
+ * Horizontal Image Size
+ */
+#define VR43		0x43
+
+/* VR80 GPIO 0
+ */
+#define VR80	    0x80
+#define VR81	    0x81
+#define VR82	    0x82
+#define VR83	    0x83
+#define VR84	    0x84
+#define VR85	    0x85
+#define VR86	    0x86
+#define VR87	    0x87
+
+/* VR88 GPIO 8
+ */
+#define VR88	    0x88
+
+/* Graphics BIOS scratch 0
+ */
+#define VR8E	    0x8E
+# define VR8E_PANEL_TYPE_MASK		(0xf << 0)
+# define VR8E_PANEL_INTERFACE_CMOS	(0 << 4)
+# define VR8E_PANEL_INTERFACE_LVDS	(1 << 4)
+# define VR8E_FORCE_DEFAULT_PANEL	(1 << 5)
+
+/* Graphics BIOS scratch 1
+ */
+#define VR8F	    0x8F
+# define VR8F_VCH_PRESENT		(1 << 0)
+# define VR8F_DISPLAY_CONN		(1 << 1)
+# define VR8F_POWER_MASK		(0x3c)
+# define VR8F_POWER_POS			(2)
+
+/* Some Bios implementations do not restore the DVO state upon
+ * resume from standby. Thus, this driver has to handle it
+ * instead. The following list contains all registers that
+ * require saving.
+ */
+static const u16 backup_addresses[] = {
+	0x11, 0x12,
+	0x18, 0x19, 0x1a, 0x1f,
+	0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
+	0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
+	0x8e, 0x8f,
+	0x10		/* this must come last */
+};
+
+
+struct ivch_priv {
+	bool quiet;
+
+	u16 width, height;
+
+	/* Register backup */
+
+	u16 reg_backup[ARRAY_SIZE(backup_addresses)];
+};
+
+
+static void ivch_dump_regs(struct intel_dvo_device *dvo);
+/*
+ * Reads a register on the ivch.
+ *
+ * Each of the 256 registers are 16 bits long.
+ */
+static bool ivch_read(struct intel_dvo_device *dvo, int addr, u16 *data)
+{
+	struct ivch_priv *priv = dvo->dev_priv;
+	struct i2c_adapter *adapter = dvo->i2c_bus;
+	u8 out_buf[1];
+	u8 in_buf[2];
+
+	struct i2c_msg msgs[] = {
+		{
+			.addr = dvo->slave_addr,
+			.flags = I2C_M_RD,
+			.len = 0,
+		},
+		{
+			.addr = 0,
+			.flags = I2C_M_NOSTART,
+			.len = 1,
+			.buf = out_buf,
+		},
+		{
+			.addr = dvo->slave_addr,
+			.flags = I2C_M_RD | I2C_M_NOSTART,
+			.len = 2,
+			.buf = in_buf,
+		}
+	};
+
+	out_buf[0] = addr;
+
+	if (i2c_transfer(adapter, msgs, 3) == 3) {
+		*data = (in_buf[1] << 8) | in_buf[0];
+		return true;
+	}
+
+	if (!priv->quiet) {
+		DRM_DEBUG_KMS("Unable to read register 0x%02x from "
+				"%s:%02x.\n",
+			  addr, adapter->name, dvo->slave_addr);
+	}
+	return false;
+}
+
+/* Writes a 16-bit register on the ivch */
+static bool ivch_write(struct intel_dvo_device *dvo, int addr, u16 data)
+{
+	struct ivch_priv *priv = dvo->dev_priv;
+	struct i2c_adapter *adapter = dvo->i2c_bus;
+	u8 out_buf[3];
+	struct i2c_msg msg = {
+		.addr = dvo->slave_addr,
+		.flags = 0,
+		.len = 3,
+		.buf = out_buf,
+	};
+
+	out_buf[0] = addr;
+	out_buf[1] = data & 0xff;
+	out_buf[2] = data >> 8;
+
+	if (i2c_transfer(adapter, &msg, 1) == 1)
+		return true;
+
+	if (!priv->quiet) {
+		DRM_DEBUG_KMS("Unable to write register 0x%02x to %s:%d.\n",
+			  addr, adapter->name, dvo->slave_addr);
+	}
+
+	return false;
+}
+
+/* Probes the given bus and slave address for an ivch */
+static bool ivch_init(struct intel_dvo_device *dvo,
+		      struct i2c_adapter *adapter)
+{
+	struct ivch_priv *priv;
+	u16 temp;
+	int i;
+
+	priv = kzalloc(sizeof(struct ivch_priv), GFP_KERNEL);
+	if (priv == NULL)
+		return false;
+
+	dvo->i2c_bus = adapter;
+	dvo->dev_priv = priv;
+	priv->quiet = true;
+
+	if (!ivch_read(dvo, VR00, &temp))
+		goto out;
+	priv->quiet = false;
+
+	/* Since the identification bits are probably zeroes, which doesn't seem
+	 * very unique, check that the value in the base address field matches
+	 * the address it's responding on.
+	 */
+	if ((temp & VR00_BASE_ADDRESS_MASK) != dvo->slave_addr) {
+		DRM_DEBUG_KMS("ivch detect failed due to address mismatch "
+			  "(%d vs %d)\n",
+			  (temp & VR00_BASE_ADDRESS_MASK), dvo->slave_addr);
+		goto out;
+	}
+
+	ivch_read(dvo, VR20, &priv->width);
+	ivch_read(dvo, VR21, &priv->height);
+
+	/* Make a backup of the registers to be able to restore them
+	 * upon suspend.
+	 */
+	for (i = 0; i < ARRAY_SIZE(backup_addresses); i++)
+		ivch_read(dvo, backup_addresses[i], priv->reg_backup + i);
+
+	ivch_dump_regs(dvo);
+
+	return true;
+
+out:
+	kfree(priv);
+	return false;
+}
+
+static enum drm_connector_status ivch_detect(struct intel_dvo_device *dvo)
+{
+	return connector_status_connected;
+}
+
+static enum drm_mode_status ivch_mode_valid(struct intel_dvo_device *dvo,
+					    struct drm_display_mode *mode)
+{
+	if (mode->clock > 112000)
+		return MODE_CLOCK_HIGH;
+
+	return MODE_OK;
+}
+
+/* Restore the DVO registers after a resume
+ * from RAM. Registers have been saved during
+ * the initialization.
+ */
+static void ivch_reset(struct intel_dvo_device *dvo)
+{
+	struct ivch_priv *priv = dvo->dev_priv;
+	int i;
+
+	DRM_DEBUG_KMS("Resetting the IVCH registers\n");
+
+	ivch_write(dvo, VR10, 0x0000);
+
+	for (i = 0; i < ARRAY_SIZE(backup_addresses); i++)
+		ivch_write(dvo, backup_addresses[i], priv->reg_backup[i]);
+}
+
+/* Sets the power state of the panel connected to the ivch */
+static void ivch_dpms(struct intel_dvo_device *dvo, bool enable)
+{
+	int i;
+	u16 vr01, vr30, backlight;
+
+	ivch_reset(dvo);
+
+	/* Set the new power state of the panel. */
+	if (!ivch_read(dvo, VR01, &vr01))
+		return;
+
+	if (enable)
+		backlight = 1;
+	else
+		backlight = 0;
+
+	ivch_write(dvo, VR80, backlight);
+
+	if (enable)
+		vr01 |= VR01_LCD_ENABLE | VR01_DVO_ENABLE;
+	else
+		vr01 &= ~(VR01_LCD_ENABLE | VR01_DVO_ENABLE);
+
+	ivch_write(dvo, VR01, vr01);
+
+	/* Wait for the panel to make its state transition */
+	for (i = 0; i < 100; i++) {
+		if (!ivch_read(dvo, VR30, &vr30))
+			break;
+
+		if (((vr30 & VR30_PANEL_ON) != 0) == enable)
+			break;
+		udelay(1000);
+	}
+	/* wait some more; vch may fail to resync sometimes without this */
+	udelay(16 * 1000);
+}
+
+static bool ivch_get_hw_state(struct intel_dvo_device *dvo)
+{
+	u16 vr01;
+
+	ivch_reset(dvo);
+
+	/* Set the new power state of the panel. */
+	if (!ivch_read(dvo, VR01, &vr01))
+		return false;
+
+	if (vr01 & VR01_LCD_ENABLE)
+		return true;
+	else
+		return false;
+}
+
+static void ivch_mode_set(struct intel_dvo_device *dvo,
+			  const struct drm_display_mode *mode,
+			  const struct drm_display_mode *adjusted_mode)
+{
+	struct ivch_priv *priv = dvo->dev_priv;
+	u16 vr40 = 0;
+	u16 vr01 = 0;
+	u16 vr10;
+
+	ivch_reset(dvo);
+
+	vr10 = priv->reg_backup[ARRAY_SIZE(backup_addresses) - 1];
+
+	/* Enable dithering for 18 bpp pipelines */
+	vr10 &= VR10_INTERFACE_DEPTH_MASK;
+	if (vr10 == VR10_INTERFACE_2X18 || vr10 == VR10_INTERFACE_1X18)
+		vr01 = VR01_DITHER_ENABLE;
+
+	vr40 = (VR40_STALL_ENABLE | VR40_VERTICAL_INTERP_ENABLE |
+		VR40_HORIZONTAL_INTERP_ENABLE);
+
+	if (mode->hdisplay != adjusted_mode->crtc_hdisplay ||
+	    mode->vdisplay != adjusted_mode->crtc_vdisplay) {
+		u16 x_ratio, y_ratio;
+
+		vr01 |= VR01_PANEL_FIT_ENABLE;
+		vr40 |= VR40_CLOCK_GATING_ENABLE;
+		x_ratio = (((mode->hdisplay - 1) << 16) /
+			   (adjusted_mode->crtc_hdisplay - 1)) >> 2;
+		y_ratio = (((mode->vdisplay - 1) << 16) /
+			   (adjusted_mode->crtc_vdisplay - 1)) >> 2;
+		ivch_write(dvo, VR42, x_ratio);
+		ivch_write(dvo, VR41, y_ratio);
+	} else {
+		vr01 &= ~VR01_PANEL_FIT_ENABLE;
+		vr40 &= ~VR40_CLOCK_GATING_ENABLE;
+	}
+	vr40 &= ~VR40_AUTO_RATIO_ENABLE;
+
+	ivch_write(dvo, VR01, vr01);
+	ivch_write(dvo, VR40, vr40);
+}
+
+static void ivch_dump_regs(struct intel_dvo_device *dvo)
+{
+	u16 val;
+
+	ivch_read(dvo, VR00, &val);
+	DRM_DEBUG_KMS("VR00: 0x%04x\n", val);
+	ivch_read(dvo, VR01, &val);
+	DRM_DEBUG_KMS("VR01: 0x%04x\n", val);
+	ivch_read(dvo, VR10, &val);
+	DRM_DEBUG_KMS("VR10: 0x%04x\n", val);
+	ivch_read(dvo, VR30, &val);
+	DRM_DEBUG_KMS("VR30: 0x%04x\n", val);
+	ivch_read(dvo, VR40, &val);
+	DRM_DEBUG_KMS("VR40: 0x%04x\n", val);
+
+	/* GPIO registers */
+	ivch_read(dvo, VR80, &val);
+	DRM_DEBUG_KMS("VR80: 0x%04x\n", val);
+	ivch_read(dvo, VR81, &val);
+	DRM_DEBUG_KMS("VR81: 0x%04x\n", val);
+	ivch_read(dvo, VR82, &val);
+	DRM_DEBUG_KMS("VR82: 0x%04x\n", val);
+	ivch_read(dvo, VR83, &val);
+	DRM_DEBUG_KMS("VR83: 0x%04x\n", val);
+	ivch_read(dvo, VR84, &val);
+	DRM_DEBUG_KMS("VR84: 0x%04x\n", val);
+	ivch_read(dvo, VR85, &val);
+	DRM_DEBUG_KMS("VR85: 0x%04x\n", val);
+	ivch_read(dvo, VR86, &val);
+	DRM_DEBUG_KMS("VR86: 0x%04x\n", val);
+	ivch_read(dvo, VR87, &val);
+	DRM_DEBUG_KMS("VR87: 0x%04x\n", val);
+	ivch_read(dvo, VR88, &val);
+	DRM_DEBUG_KMS("VR88: 0x%04x\n", val);
+
+	/* Scratch register 0 - AIM Panel type */
+	ivch_read(dvo, VR8E, &val);
+	DRM_DEBUG_KMS("VR8E: 0x%04x\n", val);
+
+	/* Scratch register 1 - Status register */
+	ivch_read(dvo, VR8F, &val);
+	DRM_DEBUG_KMS("VR8F: 0x%04x\n", val);
+}
+
+static void ivch_destroy(struct intel_dvo_device *dvo)
+{
+	struct ivch_priv *priv = dvo->dev_priv;
+
+	if (priv) {
+		kfree(priv);
+		dvo->dev_priv = NULL;
+	}
+}
+
+const struct intel_dvo_dev_ops ivch_ops = {
+	.init = ivch_init,
+	.dpms = ivch_dpms,
+	.get_hw_state = ivch_get_hw_state,
+	.mode_valid = ivch_mode_valid,
+	.mode_set = ivch_mode_set,
+	.detect = ivch_detect,
+	.dump_regs = ivch_dump_regs,
+	.destroy = ivch_destroy,
+};
diff --git a/drivers/gpu/drm/i915/display/dvo_ns2501.c b/drivers/gpu/drm/i915/display/dvo_ns2501.c
new file mode 100644
index 000000000..a724a8755
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/dvo_ns2501.c
@@ -0,0 +1,710 @@
+/*
+ *
+ * Copyright (c) 2012 Gilles Dartiguelongue, Thomas Richter
+ *
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#include "i915_drv.h"
+#include "i915_reg.h"
+#include "intel_display_types.h"
+#include "intel_dvo_dev.h"
+
+#define NS2501_VID 0x1305
+#define NS2501_DID 0x6726
+
+#define NS2501_VID_LO 0x00
+#define NS2501_VID_HI 0x01
+#define NS2501_DID_LO 0x02
+#define NS2501_DID_HI 0x03
+#define NS2501_REV 0x04
+#define NS2501_RSVD 0x05
+#define NS2501_FREQ_LO 0x06
+#define NS2501_FREQ_HI 0x07
+
+#define NS2501_REG8 0x08
+#define NS2501_8_VEN (1<<5)
+#define NS2501_8_HEN (1<<4)
+#define NS2501_8_DSEL (1<<3)
+#define NS2501_8_BPAS (1<<2)
+#define NS2501_8_RSVD (1<<1)
+#define NS2501_8_PD (1<<0)
+
+#define NS2501_REG9 0x09
+#define NS2501_9_VLOW (1<<7)
+#define NS2501_9_MSEL_MASK (0x7<<4)
+#define NS2501_9_TSEL (1<<3)
+#define NS2501_9_RSEN (1<<2)
+#define NS2501_9_RSVD (1<<1)
+#define NS2501_9_MDI (1<<0)
+
+#define NS2501_REGC 0x0c
+
+/*
+ * The following registers are not part of the official datasheet
+ * and are the result of reverse engineering.
+ */
+
+/*
+ * Register c0 controls how the DVO synchronizes with
+ * its input.
+ */
+#define NS2501_REGC0 0xc0
+#define NS2501_C0_ENABLE (1<<0)	/* enable the DVO sync in general */
+#define NS2501_C0_HSYNC (1<<1)	/* synchronize horizontal with input */
+#define NS2501_C0_VSYNC (1<<2)	/* synchronize vertical with input */
+#define NS2501_C0_RESET (1<<7)	/* reset the synchronization flip/flops */
+
+/*
+ * Register 41 is somehow related to the sync register and sync
+ * configuration. It should be 0x32 whenever regC0 is 0x05 (hsync off)
+ * and 0x00 otherwise.
+ */
+#define NS2501_REG41 0x41
+
+/*
+ * this register controls the dithering of the DVO
+ * One bit enables it, the other define the dithering depth.
+ * The higher the value, the lower the dithering depth.
+ */
+#define NS2501_F9_REG 0xf9
+#define NS2501_F9_ENABLE (1<<0)		/* if set, dithering is enabled */
+#define NS2501_F9_DITHER_MASK (0x7f<<1)	/* controls the dither depth */
+#define NS2501_F9_DITHER_SHIFT 1	/* shifts the dither mask */
+
+/*
+ * PLL configuration register. This is a pair of registers,
+ * one single byte register at 1B, and a pair at 1C,1D.
+ * These registers are counters/dividers.
+ */
+#define NS2501_REG1B 0x1b /* one byte PLL control register */
+#define NS2501_REG1C 0x1c /* low-part of the second register */
+#define NS2501_REG1D 0x1d /* high-part of the second register */
+
+/*
+ * Scaler control registers. Horizontal at b8,b9,
+ * vertical at 10,11. The scale factor is computed as
+ * 2^16/control-value. The low-byte comes first.
+ */
+#define NS2501_REG10 0x10 /* low-byte vertical scaler */
+#define NS2501_REG11 0x11 /* high-byte vertical scaler */
+#define NS2501_REGB8 0xb8 /* low-byte horizontal scaler */
+#define NS2501_REGB9 0xb9 /* high-byte horizontal scaler */
+
+/*
+ * Display window definition. This consists of four registers
+ * per dimension. One register pair defines the start of the
+ * display, one the end.
+ * As far as I understand, this defines the window within which
+ * the scaler samples the input.
+ */
+#define NS2501_REGC1 0xc1 /* low-byte horizontal display start */
+#define NS2501_REGC2 0xc2 /* high-byte horizontal display start */
+#define NS2501_REGC3 0xc3 /* low-byte horizontal display stop */
+#define NS2501_REGC4 0xc4 /* high-byte horizontal display stop */
+#define NS2501_REGC5 0xc5 /* low-byte vertical display start */
+#define NS2501_REGC6 0xc6 /* high-byte vertical display start */
+#define NS2501_REGC7 0xc7 /* low-byte vertical display stop */
+#define NS2501_REGC8 0xc8 /* high-byte vertical display stop */
+
+/*
+ * The following register pair seems to define the start of
+ * the vertical sync. If automatic syncing is enabled, and the
+ * register value defines a sync pulse that is later than the
+ * incoming sync, then the register value is ignored and the
+ * external hsync triggers the synchronization.
+ */
+#define NS2501_REG80 0x80 /* low-byte vsync-start */
+#define NS2501_REG81 0x81 /* high-byte vsync-start */
+
+/*
+ * The following register pair seems to define the total number
+ * of lines created at the output side of the scaler.
+ * This is again a low-high register pair.
+ */
+#define NS2501_REG82 0x82 /* output display height, low byte */
+#define NS2501_REG83 0x83 /* output display height, high byte */
+
+/*
+ * The following registers define the end of the front-porch
+ * in horizontal and vertical position and hence allow to shift
+ * the image left/right or up/down.
+ */
+#define NS2501_REG98 0x98 /* horizontal start of display + 256, low */
+#define NS2501_REG99 0x99 /* horizontal start of display + 256, high */
+#define NS2501_REG8E 0x8e /* vertical start of the display, low byte */
+#define NS2501_REG8F 0x8f /* vertical start of the display, high byte */
+
+/*
+ * The following register pair control the function of the
+ * backlight and the DVO output. To enable the corresponding
+ * function, the corresponding bit must be set in both registers.
+ */
+#define NS2501_REG34 0x34 /* DVO enable functions, first register */
+#define NS2501_REG35 0x35 /* DVO enable functions, second register */
+#define NS2501_34_ENABLE_OUTPUT (1<<0) /* enable DVO output */
+#define NS2501_34_ENABLE_BACKLIGHT (1<<1) /* enable backlight */
+
+/*
+ * Registers 9C and 9D define the vertical output offset
+ * of the visible region.
+ */
+#define NS2501_REG9C 0x9c
+#define NS2501_REG9D 0x9d
+
+/*
+ * The register 9F defines the dithering. This requires the
+ * scaler to be ON. Bit 0 enables dithering, the remaining
+ * bits control the depth of the dither. The higher the value,
+ * the LOWER the dithering amplitude. A good value seems to be
+ * 15 (total register value).
+ */
+#define NS2501_REGF9 0xf9
+#define NS2501_F9_ENABLE_DITHER (1<<0) /* enable dithering */
+#define NS2501_F9_DITHER_MASK (0x7f<<1) /* dither masking */
+#define NS2501_F9_DITHER_SHIFT 1	/* upshift of the dither mask */
+
+enum {
+	MODE_640x480,
+	MODE_800x600,
+	MODE_1024x768,
+};
+
+struct ns2501_reg {
+	u8 offset;
+	u8 value;
+};
+
+/*
+ * The following structure keeps the complete configuration of
+ * the DVO, given a specific output configuration.
+ * This is pretty much guess-work from reverse-engineering, so
+ * read all this with a grain of salt.
+ */
+struct ns2501_configuration {
+	u8 sync;		/* configuration of the C0 register */
+	u8 conf;		/* configuration register 8 */
+	u8 syncb;		/* configuration register 41 */
+	u8 dither;		/* configuration of the dithering */
+	u8 pll_a;		/* PLL configuration, register A, 1B */
+	u16 pll_b;		/* PLL configuration, register B, 1C/1D */
+	u16 hstart;		/* horizontal start, registers C1/C2 */
+	u16 hstop;		/* horizontal total, registers C3/C4 */
+	u16 vstart;		/* vertical start, registers C5/C6 */
+	u16 vstop;		/* vertical total, registers C7/C8 */
+	u16 vsync;		/* manual vertical sync start, 80/81 */
+	u16 vtotal;		/* number of lines generated, 82/83 */
+	u16 hpos;		/* horizontal position + 256, 98/99  */
+	u16 vpos;		/* vertical position, 8e/8f */
+	u16 voffs;		/* vertical output offset, 9c/9d */
+	u16 hscale;		/* horizontal scaling factor, b8/b9 */
+	u16 vscale;		/* vertical scaling factor, 10/11 */
+};
+
+/*
+ * DVO configuration values, partially based on what the BIOS
+ * of the Fujitsu Lifebook S6010 writes into registers,
+ * partially found by manual tweaking. These configurations assume
+ * a 1024x768 panel.
+ */
+static const struct ns2501_configuration ns2501_modes[] = {
+	[MODE_640x480] = {
+		.sync	= NS2501_C0_ENABLE | NS2501_C0_VSYNC,
+		.conf	= NS2501_8_VEN | NS2501_8_HEN | NS2501_8_PD,
+		.syncb	= 0x32,
+		.dither	= 0x0f,
+		.pll_a	= 17,
+		.pll_b	= 852,
+		.hstart	= 144,
+		.hstop	= 783,
+		.vstart	= 22,
+		.vstop	= 514,
+		.vsync	= 2047, /* actually, ignored with this config */
+		.vtotal	= 1341,
+		.hpos	= 0,
+		.vpos	= 16,
+		.voffs	= 36,
+		.hscale	= 40960,
+		.vscale	= 40960
+	},
+	[MODE_800x600] = {
+		.sync	= NS2501_C0_ENABLE |
+			  NS2501_C0_HSYNC | NS2501_C0_VSYNC,
+		.conf   = NS2501_8_VEN | NS2501_8_HEN | NS2501_8_PD,
+		.syncb	= 0x00,
+		.dither	= 0x0f,
+		.pll_a	= 25,
+		.pll_b	= 612,
+		.hstart	= 215,
+		.hstop	= 1016,
+		.vstart	= 26,
+		.vstop	= 627,
+		.vsync	= 807,
+		.vtotal	= 1341,
+		.hpos	= 0,
+		.vpos	= 4,
+		.voffs	= 35,
+		.hscale	= 51248,
+		.vscale	= 51232
+	},
+	[MODE_1024x768] = {
+		.sync	= NS2501_C0_ENABLE | NS2501_C0_VSYNC,
+		.conf   = NS2501_8_VEN | NS2501_8_HEN | NS2501_8_PD,
+		.syncb	= 0x32,
+		.dither	= 0x0f,
+		.pll_a	= 11,
+		.pll_b	= 1350,
+		.hstart	= 276,
+		.hstop	= 1299,
+		.vstart	= 15,
+		.vstop	= 1056,
+		.vsync	= 2047,
+		.vtotal	= 1341,
+		.hpos	= 0,
+		.vpos	= 7,
+		.voffs	= 27,
+		.hscale	= 65535,
+		.vscale	= 65535
+	}
+};
+
+/*
+ * Other configuration values left by the BIOS of the
+ * Fujitsu S6010 in the DVO control registers. Their
+ * value does not depend on the BIOS and their meaning
+ * is unknown.
+ */
+
+static const struct ns2501_reg mode_agnostic_values[] = {
+	/* 08 is mode specific */
+	[0] = { .offset = 0x0a, .value = 0x81, },
+	/* 10,11 are part of the mode specific configuration */
+	[1] = { .offset = 0x12, .value = 0x02, },
+	[2] = { .offset = 0x18, .value = 0x07, },
+	[3] = { .offset = 0x19, .value = 0x00, },
+	[4] = { .offset = 0x1a, .value = 0x00, }, /* PLL?, ignored */
+	/* 1b,1c,1d are part of the mode specific configuration */
+	[5] = { .offset = 0x1e, .value = 0x02, },
+	[6] = { .offset = 0x1f, .value = 0x40, },
+	[7] = { .offset = 0x20, .value = 0x00, },
+	[8] = { .offset = 0x21, .value = 0x00, },
+	[9] = { .offset = 0x22, .value = 0x00, },
+	[10] = { .offset = 0x23, .value = 0x00, },
+	[11] = { .offset = 0x24, .value = 0x00, },
+	[12] = { .offset = 0x25, .value = 0x00, },
+	[13] = { .offset = 0x26, .value = 0x00, },
+	[14] = { .offset = 0x27, .value = 0x00, },
+	[15] = { .offset = 0x7e, .value = 0x18, },
+	/* 80-84 are part of the mode-specific configuration */
+	[16] = { .offset = 0x84, .value = 0x00, },
+	[17] = { .offset = 0x85, .value = 0x00, },
+	[18] = { .offset = 0x86, .value = 0x00, },
+	[19] = { .offset = 0x87, .value = 0x00, },
+	[20] = { .offset = 0x88, .value = 0x00, },
+	[21] = { .offset = 0x89, .value = 0x00, },
+	[22] = { .offset = 0x8a, .value = 0x00, },
+	[23] = { .offset = 0x8b, .value = 0x00, },
+	[24] = { .offset = 0x8c, .value = 0x10, },
+	[25] = { .offset = 0x8d, .value = 0x02, },
+	/* 8e,8f are part of the mode-specific configuration */
+	[26] = { .offset = 0x90, .value = 0xff, },
+	[27] = { .offset = 0x91, .value = 0x07, },
+	[28] = { .offset = 0x92, .value = 0xa0, },
+	[29] = { .offset = 0x93, .value = 0x02, },
+	[30] = { .offset = 0x94, .value = 0x00, },
+	[31] = { .offset = 0x95, .value = 0x00, },
+	[32] = { .offset = 0x96, .value = 0x05, },
+	[33] = { .offset = 0x97, .value = 0x00, },
+	/* 98,99 are part of the mode-specific configuration */
+	[34] = { .offset = 0x9a, .value = 0x88, },
+	[35] = { .offset = 0x9b, .value = 0x00, },
+	/* 9c,9d are part of the mode-specific configuration */
+	[36] = { .offset = 0x9e, .value = 0x25, },
+	[37] = { .offset = 0x9f, .value = 0x03, },
+	[38] = { .offset = 0xa0, .value = 0x28, },
+	[39] = { .offset = 0xa1, .value = 0x01, },
+	[40] = { .offset = 0xa2, .value = 0x28, },
+	[41] = { .offset = 0xa3, .value = 0x05, },
+	/* register 0xa4 is mode specific, but 0x80..0x84 works always */
+	[42] = { .offset = 0xa4, .value = 0x84, },
+	[43] = { .offset = 0xa5, .value = 0x00, },
+	[44] = { .offset = 0xa6, .value = 0x00, },
+	[45] = { .offset = 0xa7, .value = 0x00, },
+	[46] = { .offset = 0xa8, .value = 0x00, },
+	/* 0xa9 to 0xab are mode specific, but have no visible effect */
+	[47] = { .offset = 0xa9, .value = 0x04, },
+	[48] = { .offset = 0xaa, .value = 0x70, },
+	[49] = { .offset = 0xab, .value = 0x4f, },
+	[50] = { .offset = 0xac, .value = 0x00, },
+	[51] = { .offset = 0xad, .value = 0x00, },
+	[52] = { .offset = 0xb6, .value = 0x09, },
+	[53] = { .offset = 0xb7, .value = 0x03, },
+	/* b8,b9 are part of the mode-specific configuration */
+	[54] = { .offset = 0xba, .value = 0x00, },
+	[55] = { .offset = 0xbb, .value = 0x20, },
+	[56] = { .offset = 0xf3, .value = 0x90, },
+	[57] = { .offset = 0xf4, .value = 0x00, },
+	[58] = { .offset = 0xf7, .value = 0x88, },
+	/* f8 is mode specific, but the value does not matter */
+	[59] = { .offset = 0xf8, .value = 0x0a, },
+	[60] = { .offset = 0xf9, .value = 0x00, }
+};
+
+static const struct ns2501_reg regs_init[] = {
+	[0] = { .offset = 0x35, .value = 0xff, },
+	[1] = { .offset = 0x34, .value = 0x00, },
+	[2] = { .offset = 0x08, .value = 0x30, },
+};
+
+struct ns2501_priv {
+	bool quiet;
+	const struct ns2501_configuration *conf;
+};
+
+#define NSPTR(d) ((NS2501Ptr)(d->DriverPrivate.ptr))
+
+/*
+** Read a register from the ns2501.
+** Returns true if successful, false otherwise.
+** If it returns false, it might be wise to enable the
+** DVO with the above function.
+*/
+static bool ns2501_readb(struct intel_dvo_device *dvo, int addr, u8 *ch)
+{
+	struct ns2501_priv *ns = dvo->dev_priv;
+	struct i2c_adapter *adapter = dvo->i2c_bus;
+	u8 out_buf[2];
+	u8 in_buf[2];
+
+	struct i2c_msg msgs[] = {
+		{
+		 .addr = dvo->slave_addr,
+		 .flags = 0,
+		 .len = 1,
+		 .buf = out_buf,
+		 },
+		{
+		 .addr = dvo->slave_addr,
+		 .flags = I2C_M_RD,
+		 .len = 1,
+		 .buf = in_buf,
+		 }
+	};
+
+	out_buf[0] = addr;
+	out_buf[1] = 0;
+
+	if (i2c_transfer(adapter, msgs, 2) == 2) {
+		*ch = in_buf[0];
+		return true;
+	}
+
+	if (!ns->quiet) {
+		DRM_DEBUG_KMS
+		    ("Unable to read register 0x%02x from %s:0x%02x.\n", addr,
+		     adapter->name, dvo->slave_addr);
+	}
+
+	return false;
+}
+
+/*
+** Write a register to the ns2501.
+** Returns true if successful, false otherwise.
+** If it returns false, it might be wise to enable the
+** DVO with the above function.
+*/
+static bool ns2501_writeb(struct intel_dvo_device *dvo, int addr, u8 ch)
+{
+	struct ns2501_priv *ns = dvo->dev_priv;
+	struct i2c_adapter *adapter = dvo->i2c_bus;
+	u8 out_buf[2];
+
+	struct i2c_msg msg = {
+		.addr = dvo->slave_addr,
+		.flags = 0,
+		.len = 2,
+		.buf = out_buf,
+	};
+
+	out_buf[0] = addr;
+	out_buf[1] = ch;
+
+	if (i2c_transfer(adapter, &msg, 1) == 1) {
+		return true;
+	}
+
+	if (!ns->quiet) {
+		DRM_DEBUG_KMS("Unable to write register 0x%02x to %s:%d\n",
+			      addr, adapter->name, dvo->slave_addr);
+	}
+
+	return false;
+}
+
+/* National Semiconductor 2501 driver for chip on i2c bus
+ * scan for the chip on the bus.
+ * Hope the VBIOS initialized the PLL correctly so we can
+ * talk to it. If not, it will not be seen and not detected.
+ * Bummer!
+ */
+static bool ns2501_init(struct intel_dvo_device *dvo,
+			struct i2c_adapter *adapter)
+{
+	/* this will detect the NS2501 chip on the specified i2c bus */
+	struct ns2501_priv *ns;
+	unsigned char ch;
+
+	ns = kzalloc(sizeof(struct ns2501_priv), GFP_KERNEL);
+	if (ns == NULL)
+		return false;
+
+	dvo->i2c_bus = adapter;
+	dvo->dev_priv = ns;
+	ns->quiet = true;
+
+	if (!ns2501_readb(dvo, NS2501_VID_LO, &ch))
+		goto out;
+
+	if (ch != (NS2501_VID & 0xff)) {
+		DRM_DEBUG_KMS("ns2501 not detected got %d: from %s Slave %d.\n",
+			      ch, adapter->name, dvo->slave_addr);
+		goto out;
+	}
+
+	if (!ns2501_readb(dvo, NS2501_DID_LO, &ch))
+		goto out;
+
+	if (ch != (NS2501_DID & 0xff)) {
+		DRM_DEBUG_KMS("ns2501 not detected got %d: from %s Slave %d.\n",
+			      ch, adapter->name, dvo->slave_addr);
+		goto out;
+	}
+	ns->quiet = false;
+
+	DRM_DEBUG_KMS("init ns2501 dvo controller successfully!\n");
+
+	return true;
+
+out:
+	kfree(ns);
+	return false;
+}
+
+static enum drm_connector_status ns2501_detect(struct intel_dvo_device *dvo)
+{
+	/*
+	 * This is a Laptop display, it doesn't have hotplugging.
+	 * Even if not, the detection bit of the 2501 is unreliable as
+	 * it only works for some display types.
+	 * It is even more unreliable as the PLL must be active for
+	 * allowing reading from the chiop.
+	 */
+	return connector_status_connected;
+}
+
+static enum drm_mode_status ns2501_mode_valid(struct intel_dvo_device *dvo,
+					      struct drm_display_mode *mode)
+{
+	DRM_DEBUG_KMS
+	    ("is mode valid (hdisplay=%d,htotal=%d,vdisplay=%d,vtotal=%d)\n",
+	     mode->hdisplay, mode->htotal, mode->vdisplay, mode->vtotal);
+
+	/*
+	 * Currently, these are all the modes I have data from.
+	 * More might exist. Unclear how to find the native resolution
+	 * of the panel in here so we could always accept it
+	 * by disabling the scaler.
+	 */
+	if ((mode->hdisplay == 640 && mode->vdisplay == 480 && mode->clock == 25175) ||
+	    (mode->hdisplay == 800 && mode->vdisplay == 600 && mode->clock == 40000) ||
+	    (mode->hdisplay == 1024 && mode->vdisplay == 768 && mode->clock == 65000)) {
+		return MODE_OK;
+	} else {
+		return MODE_ONE_SIZE;	/* Is this a reasonable error? */
+	}
+}
+
+static void ns2501_mode_set(struct intel_dvo_device *dvo,
+			    const struct drm_display_mode *mode,
+			    const struct drm_display_mode *adjusted_mode)
+{
+	const struct ns2501_configuration *conf;
+	struct ns2501_priv *ns = (struct ns2501_priv *)(dvo->dev_priv);
+	int mode_idx, i;
+
+	DRM_DEBUG_KMS
+	    ("set mode (hdisplay=%d,htotal=%d,vdisplay=%d,vtotal=%d).\n",
+	     mode->hdisplay, mode->htotal, mode->vdisplay, mode->vtotal);
+
+	DRM_DEBUG_KMS("Detailed requested mode settings are:\n"
+			"clock		: %d kHz\n"
+			"hdisplay	: %d\n"
+			"hblank start	: %d\n"
+			"hblank end	: %d\n"
+			"hsync start	: %d\n"
+			"hsync end	: %d\n"
+			"htotal		: %d\n"
+			"hskew		: %d\n"
+			"vdisplay	: %d\n"
+			"vblank start	: %d\n"
+			"hblank end	: %d\n"
+			"vsync start	: %d\n"
+			"vsync end	: %d\n"
+			"vtotal		: %d\n",
+			adjusted_mode->crtc_clock,
+			adjusted_mode->crtc_hdisplay,
+			adjusted_mode->crtc_hblank_start,
+			adjusted_mode->crtc_hblank_end,
+			adjusted_mode->crtc_hsync_start,
+			adjusted_mode->crtc_hsync_end,
+			adjusted_mode->crtc_htotal,
+			adjusted_mode->crtc_hskew,
+			adjusted_mode->crtc_vdisplay,
+			adjusted_mode->crtc_vblank_start,
+			adjusted_mode->crtc_vblank_end,
+			adjusted_mode->crtc_vsync_start,
+			adjusted_mode->crtc_vsync_end,
+			adjusted_mode->crtc_vtotal);
+
+	if (mode->hdisplay == 640 && mode->vdisplay == 480)
+		mode_idx = MODE_640x480;
+	else if (mode->hdisplay == 800 && mode->vdisplay == 600)
+		mode_idx = MODE_800x600;
+	else if (mode->hdisplay == 1024 && mode->vdisplay == 768)
+		mode_idx = MODE_1024x768;
+	else
+		return;
+
+	/* Hopefully doing it every time won't hurt... */
+	for (i = 0; i < ARRAY_SIZE(regs_init); i++)
+		ns2501_writeb(dvo, regs_init[i].offset, regs_init[i].value);
+
+	/* Write the mode-agnostic values */
+	for (i = 0; i < ARRAY_SIZE(mode_agnostic_values); i++)
+		ns2501_writeb(dvo, mode_agnostic_values[i].offset,
+				mode_agnostic_values[i].value);
+
+	/* Write now the mode-specific configuration */
+	conf = ns2501_modes + mode_idx;
+	ns->conf = conf;
+
+	ns2501_writeb(dvo, NS2501_REG8, conf->conf);
+	ns2501_writeb(dvo, NS2501_REG1B, conf->pll_a);
+	ns2501_writeb(dvo, NS2501_REG1C, conf->pll_b & 0xff);
+	ns2501_writeb(dvo, NS2501_REG1D, conf->pll_b >> 8);
+	ns2501_writeb(dvo, NS2501_REGC1, conf->hstart & 0xff);
+	ns2501_writeb(dvo, NS2501_REGC2, conf->hstart >> 8);
+	ns2501_writeb(dvo, NS2501_REGC3, conf->hstop & 0xff);
+	ns2501_writeb(dvo, NS2501_REGC4, conf->hstop >> 8);
+	ns2501_writeb(dvo, NS2501_REGC5, conf->vstart & 0xff);
+	ns2501_writeb(dvo, NS2501_REGC6, conf->vstart >> 8);
+	ns2501_writeb(dvo, NS2501_REGC7, conf->vstop & 0xff);
+	ns2501_writeb(dvo, NS2501_REGC8, conf->vstop >> 8);
+	ns2501_writeb(dvo, NS2501_REG80, conf->vsync & 0xff);
+	ns2501_writeb(dvo, NS2501_REG81, conf->vsync >> 8);
+	ns2501_writeb(dvo, NS2501_REG82, conf->vtotal & 0xff);
+	ns2501_writeb(dvo, NS2501_REG83, conf->vtotal >> 8);
+	ns2501_writeb(dvo, NS2501_REG98, conf->hpos & 0xff);
+	ns2501_writeb(dvo, NS2501_REG99, conf->hpos >> 8);
+	ns2501_writeb(dvo, NS2501_REG8E, conf->vpos & 0xff);
+	ns2501_writeb(dvo, NS2501_REG8F, conf->vpos >> 8);
+	ns2501_writeb(dvo, NS2501_REG9C, conf->voffs & 0xff);
+	ns2501_writeb(dvo, NS2501_REG9D, conf->voffs >> 8);
+	ns2501_writeb(dvo, NS2501_REGB8, conf->hscale & 0xff);
+	ns2501_writeb(dvo, NS2501_REGB9, conf->hscale >> 8);
+	ns2501_writeb(dvo, NS2501_REG10, conf->vscale & 0xff);
+	ns2501_writeb(dvo, NS2501_REG11, conf->vscale >> 8);
+	ns2501_writeb(dvo, NS2501_REGF9, conf->dither);
+	ns2501_writeb(dvo, NS2501_REG41, conf->syncb);
+	ns2501_writeb(dvo, NS2501_REGC0, conf->sync);
+}
+
+/* set the NS2501 power state */
+static bool ns2501_get_hw_state(struct intel_dvo_device *dvo)
+{
+	unsigned char ch;
+
+	if (!ns2501_readb(dvo, NS2501_REG8, &ch))
+		return false;
+
+	return ch & NS2501_8_PD;
+}
+
+/* set the NS2501 power state */
+static void ns2501_dpms(struct intel_dvo_device *dvo, bool enable)
+{
+	struct ns2501_priv *ns = (struct ns2501_priv *)(dvo->dev_priv);
+
+	DRM_DEBUG_KMS("Trying set the dpms of the DVO to %i\n", enable);
+
+	if (enable) {
+		ns2501_writeb(dvo, NS2501_REGC0, ns->conf->sync | 0x08);
+
+		ns2501_writeb(dvo, NS2501_REG41, ns->conf->syncb);
+
+		ns2501_writeb(dvo, NS2501_REG34, NS2501_34_ENABLE_OUTPUT);
+		msleep(15);
+
+		ns2501_writeb(dvo, NS2501_REG8,
+				ns->conf->conf | NS2501_8_BPAS);
+		if (!(ns->conf->conf & NS2501_8_BPAS))
+			ns2501_writeb(dvo, NS2501_REG8, ns->conf->conf);
+		msleep(200);
+
+		ns2501_writeb(dvo, NS2501_REG34,
+			NS2501_34_ENABLE_OUTPUT | NS2501_34_ENABLE_BACKLIGHT);
+
+		ns2501_writeb(dvo, NS2501_REGC0, ns->conf->sync);
+	} else {
+		ns2501_writeb(dvo, NS2501_REG34, NS2501_34_ENABLE_OUTPUT);
+		msleep(200);
+
+		ns2501_writeb(dvo, NS2501_REG8, NS2501_8_VEN | NS2501_8_HEN |
+				NS2501_8_BPAS);
+		msleep(15);
+
+		ns2501_writeb(dvo, NS2501_REG34, 0x00);
+	}
+}
+
+static void ns2501_destroy(struct intel_dvo_device *dvo)
+{
+	struct ns2501_priv *ns = dvo->dev_priv;
+
+	if (ns) {
+		kfree(ns);
+		dvo->dev_priv = NULL;
+	}
+}
+
+const struct intel_dvo_dev_ops ns2501_ops = {
+	.init = ns2501_init,
+	.detect = ns2501_detect,
+	.mode_valid = ns2501_mode_valid,
+	.mode_set = ns2501_mode_set,
+	.dpms = ns2501_dpms,
+	.get_hw_state = ns2501_get_hw_state,
+	.destroy = ns2501_destroy,
+};
diff --git a/drivers/gpu/drm/i915/display/dvo_sil164.c b/drivers/gpu/drm/i915/display/dvo_sil164.c
new file mode 100644
index 000000000..0dfa0a020
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/dvo_sil164.c
@@ -0,0 +1,280 @@
+/**************************************************************************
+
+Copyright © 2006 Dave Airlie
+
+All Rights Reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sub license, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice (including the
+next paragraph) shall be included in all copies or substantial portions
+of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+**************************************************************************/
+
+#include "intel_display_types.h"
+#include "intel_dvo_dev.h"
+
+#define SIL164_VID 0x0001
+#define SIL164_DID 0x0006
+
+#define SIL164_VID_LO 0x00
+#define SIL164_VID_HI 0x01
+#define SIL164_DID_LO 0x02
+#define SIL164_DID_HI 0x03
+#define SIL164_REV    0x04
+#define SIL164_RSVD   0x05
+#define SIL164_FREQ_LO 0x06
+#define SIL164_FREQ_HI 0x07
+
+#define SIL164_REG8 0x08
+#define SIL164_8_VEN (1<<5)
+#define SIL164_8_HEN (1<<4)
+#define SIL164_8_DSEL (1<<3)
+#define SIL164_8_BSEL (1<<2)
+#define SIL164_8_EDGE (1<<1)
+#define SIL164_8_PD   (1<<0)
+
+#define SIL164_REG9 0x09
+#define SIL164_9_VLOW (1<<7)
+#define SIL164_9_MSEL_MASK (0x7<<4)
+#define SIL164_9_TSEL (1<<3)
+#define SIL164_9_RSEN (1<<2)
+#define SIL164_9_HTPLG (1<<1)
+#define SIL164_9_MDI (1<<0)
+
+#define SIL164_REGC 0x0c
+
+struct sil164_priv {
+	//I2CDevRec d;
+	bool quiet;
+};
+
+#define SILPTR(d) ((SIL164Ptr)(d->DriverPrivate.ptr))
+
+static bool sil164_readb(struct intel_dvo_device *dvo, int addr, u8 *ch)
+{
+	struct sil164_priv *sil = dvo->dev_priv;
+	struct i2c_adapter *adapter = dvo->i2c_bus;
+	u8 out_buf[2];
+	u8 in_buf[2];
+
+	struct i2c_msg msgs[] = {
+		{
+			.addr = dvo->slave_addr,
+			.flags = 0,
+			.len = 1,
+			.buf = out_buf,
+		},
+		{
+			.addr = dvo->slave_addr,
+			.flags = I2C_M_RD,
+			.len = 1,
+			.buf = in_buf,
+		}
+	};
+
+	out_buf[0] = addr;
+	out_buf[1] = 0;
+
+	if (i2c_transfer(adapter, msgs, 2) == 2) {
+		*ch = in_buf[0];
+		return true;
+	}
+
+	if (!sil->quiet) {
+		DRM_DEBUG_KMS("Unable to read register 0x%02x from %s:%02x.\n",
+			  addr, adapter->name, dvo->slave_addr);
+	}
+	return false;
+}
+
+static bool sil164_writeb(struct intel_dvo_device *dvo, int addr, u8 ch)
+{
+	struct sil164_priv *sil = dvo->dev_priv;
+	struct i2c_adapter *adapter = dvo->i2c_bus;
+	u8 out_buf[2];
+	struct i2c_msg msg = {
+		.addr = dvo->slave_addr,
+		.flags = 0,
+		.len = 2,
+		.buf = out_buf,
+	};
+
+	out_buf[0] = addr;
+	out_buf[1] = ch;
+
+	if (i2c_transfer(adapter, &msg, 1) == 1)
+		return true;
+
+	if (!sil->quiet) {
+		DRM_DEBUG_KMS("Unable to write register 0x%02x to %s:%d.\n",
+			  addr, adapter->name, dvo->slave_addr);
+	}
+
+	return false;
+}
+
+/* Silicon Image 164 driver for chip on i2c bus */
+static bool sil164_init(struct intel_dvo_device *dvo,
+			struct i2c_adapter *adapter)
+{
+	/* this will detect the SIL164 chip on the specified i2c bus */
+	struct sil164_priv *sil;
+	unsigned char ch;
+
+	sil = kzalloc(sizeof(struct sil164_priv), GFP_KERNEL);
+	if (sil == NULL)
+		return false;
+
+	dvo->i2c_bus = adapter;
+	dvo->dev_priv = sil;
+	sil->quiet = true;
+
+	if (!sil164_readb(dvo, SIL164_VID_LO, &ch))
+		goto out;
+
+	if (ch != (SIL164_VID & 0xff)) {
+		DRM_DEBUG_KMS("sil164 not detected got %d: from %s Slave %d.\n",
+			  ch, adapter->name, dvo->slave_addr);
+		goto out;
+	}
+
+	if (!sil164_readb(dvo, SIL164_DID_LO, &ch))
+		goto out;
+
+	if (ch != (SIL164_DID & 0xff)) {
+		DRM_DEBUG_KMS("sil164 not detected got %d: from %s Slave %d.\n",
+			  ch, adapter->name, dvo->slave_addr);
+		goto out;
+	}
+	sil->quiet = false;
+
+	DRM_DEBUG_KMS("init sil164 dvo controller successfully!\n");
+	return true;
+
+out:
+	kfree(sil);
+	return false;
+}
+
+static enum drm_connector_status sil164_detect(struct intel_dvo_device *dvo)
+{
+	u8 reg9;
+
+	sil164_readb(dvo, SIL164_REG9, &reg9);
+
+	if (reg9 & SIL164_9_HTPLG)
+		return connector_status_connected;
+	else
+		return connector_status_disconnected;
+}
+
+static enum drm_mode_status sil164_mode_valid(struct intel_dvo_device *dvo,
+					      struct drm_display_mode *mode)
+{
+	return MODE_OK;
+}
+
+static void sil164_mode_set(struct intel_dvo_device *dvo,
+			    const struct drm_display_mode *mode,
+			    const struct drm_display_mode *adjusted_mode)
+{
+	/* As long as the basics are set up, since we don't have clock
+	 * dependencies in the mode setup, we can just leave the
+	 * registers alone and everything will work fine.
+	 */
+	/* recommended programming sequence from doc */
+	/*sil164_writeb(sil, 0x08, 0x30);
+	  sil164_writeb(sil, 0x09, 0x00);
+	  sil164_writeb(sil, 0x0a, 0x90);
+	  sil164_writeb(sil, 0x0c, 0x89);
+	  sil164_writeb(sil, 0x08, 0x31);*/
+	/* don't do much */
+	return;
+}
+
+/* set the SIL164 power state */
+static void sil164_dpms(struct intel_dvo_device *dvo, bool enable)
+{
+	int ret;
+	unsigned char ch;
+
+	ret = sil164_readb(dvo, SIL164_REG8, &ch);
+	if (ret == false)
+		return;
+
+	if (enable)
+		ch |= SIL164_8_PD;
+	else
+		ch &= ~SIL164_8_PD;
+
+	sil164_writeb(dvo, SIL164_REG8, ch);
+	return;
+}
+
+static bool sil164_get_hw_state(struct intel_dvo_device *dvo)
+{
+	int ret;
+	unsigned char ch;
+
+	ret = sil164_readb(dvo, SIL164_REG8, &ch);
+	if (ret == false)
+		return false;
+
+	if (ch & SIL164_8_PD)
+		return true;
+	else
+		return false;
+}
+
+static void sil164_dump_regs(struct intel_dvo_device *dvo)
+{
+	u8 val;
+
+	sil164_readb(dvo, SIL164_FREQ_LO, &val);
+	DRM_DEBUG_KMS("SIL164_FREQ_LO: 0x%02x\n", val);
+	sil164_readb(dvo, SIL164_FREQ_HI, &val);
+	DRM_DEBUG_KMS("SIL164_FREQ_HI: 0x%02x\n", val);
+	sil164_readb(dvo, SIL164_REG8, &val);
+	DRM_DEBUG_KMS("SIL164_REG8: 0x%02x\n", val);
+	sil164_readb(dvo, SIL164_REG9, &val);
+	DRM_DEBUG_KMS("SIL164_REG9: 0x%02x\n", val);
+	sil164_readb(dvo, SIL164_REGC, &val);
+	DRM_DEBUG_KMS("SIL164_REGC: 0x%02x\n", val);
+}
+
+static void sil164_destroy(struct intel_dvo_device *dvo)
+{
+	struct sil164_priv *sil = dvo->dev_priv;
+
+	if (sil) {
+		kfree(sil);
+		dvo->dev_priv = NULL;
+	}
+}
+
+const struct intel_dvo_dev_ops sil164_ops = {
+	.init = sil164_init,
+	.detect = sil164_detect,
+	.mode_valid = sil164_mode_valid,
+	.mode_set = sil164_mode_set,
+	.dpms = sil164_dpms,
+	.get_hw_state = sil164_get_hw_state,
+	.dump_regs = sil164_dump_regs,
+	.destroy = sil164_destroy,
+};
diff --git a/drivers/gpu/drm/i915/display/dvo_tfp410.c b/drivers/gpu/drm/i915/display/dvo_tfp410.c
new file mode 100644
index 000000000..009d65b0f
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/dvo_tfp410.c
@@ -0,0 +1,319 @@
+/*
+ * Copyright © 2007 Dave Mueller
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Dave Mueller <dave.mueller@gmx.ch>
+ *
+ */
+
+#include "intel_display_types.h"
+#include "intel_dvo_dev.h"
+
+/* register definitions according to the TFP410 data sheet */
+#define TFP410_VID		0x014C
+#define TFP410_DID		0x0410
+
+#define TFP410_VID_LO		0x00
+#define TFP410_VID_HI		0x01
+#define TFP410_DID_LO		0x02
+#define TFP410_DID_HI		0x03
+#define TFP410_REV		0x04
+
+#define TFP410_CTL_1		0x08
+#define TFP410_CTL_1_TDIS	(1<<6)
+#define TFP410_CTL_1_VEN	(1<<5)
+#define TFP410_CTL_1_HEN	(1<<4)
+#define TFP410_CTL_1_DSEL	(1<<3)
+#define TFP410_CTL_1_BSEL	(1<<2)
+#define TFP410_CTL_1_EDGE	(1<<1)
+#define TFP410_CTL_1_PD		(1<<0)
+
+#define TFP410_CTL_2		0x09
+#define TFP410_CTL_2_VLOW	(1<<7)
+#define TFP410_CTL_2_MSEL_MASK	(0x7<<4)
+#define TFP410_CTL_2_MSEL	(1<<4)
+#define TFP410_CTL_2_TSEL	(1<<3)
+#define TFP410_CTL_2_RSEN	(1<<2)
+#define TFP410_CTL_2_HTPLG	(1<<1)
+#define TFP410_CTL_2_MDI	(1<<0)
+
+#define TFP410_CTL_3		0x0A
+#define TFP410_CTL_3_DK_MASK	(0x7<<5)
+#define TFP410_CTL_3_DK		(1<<5)
+#define TFP410_CTL_3_DKEN	(1<<4)
+#define TFP410_CTL_3_CTL_MASK	(0x7<<1)
+#define TFP410_CTL_3_CTL	(1<<1)
+
+#define TFP410_USERCFG		0x0B
+
+#define TFP410_DE_DLY		0x32
+
+#define TFP410_DE_CTL		0x33
+#define TFP410_DE_CTL_DEGEN	(1<<6)
+#define TFP410_DE_CTL_VSPOL	(1<<5)
+#define TFP410_DE_CTL_HSPOL	(1<<4)
+#define TFP410_DE_CTL_DEDLY8	(1<<0)
+
+#define TFP410_DE_TOP		0x34
+
+#define TFP410_DE_CNT_LO	0x36
+#define TFP410_DE_CNT_HI	0x37
+
+#define TFP410_DE_LIN_LO	0x38
+#define TFP410_DE_LIN_HI	0x39
+
+#define TFP410_H_RES_LO		0x3A
+#define TFP410_H_RES_HI		0x3B
+
+#define TFP410_V_RES_LO		0x3C
+#define TFP410_V_RES_HI		0x3D
+
+struct tfp410_priv {
+	bool quiet;
+};
+
+static bool tfp410_readb(struct intel_dvo_device *dvo, int addr, u8 *ch)
+{
+	struct tfp410_priv *tfp = dvo->dev_priv;
+	struct i2c_adapter *adapter = dvo->i2c_bus;
+	u8 out_buf[2];
+	u8 in_buf[2];
+
+	struct i2c_msg msgs[] = {
+		{
+			.addr = dvo->slave_addr,
+			.flags = 0,
+			.len = 1,
+			.buf = out_buf,
+		},
+		{
+			.addr = dvo->slave_addr,
+			.flags = I2C_M_RD,
+			.len = 1,
+			.buf = in_buf,
+		}
+	};
+
+	out_buf[0] = addr;
+	out_buf[1] = 0;
+
+	if (i2c_transfer(adapter, msgs, 2) == 2) {
+		*ch = in_buf[0];
+		return true;
+	}
+
+	if (!tfp->quiet) {
+		DRM_DEBUG_KMS("Unable to read register 0x%02x from %s:%02x.\n",
+			  addr, adapter->name, dvo->slave_addr);
+	}
+	return false;
+}
+
+static bool tfp410_writeb(struct intel_dvo_device *dvo, int addr, u8 ch)
+{
+	struct tfp410_priv *tfp = dvo->dev_priv;
+	struct i2c_adapter *adapter = dvo->i2c_bus;
+	u8 out_buf[2];
+	struct i2c_msg msg = {
+		.addr = dvo->slave_addr,
+		.flags = 0,
+		.len = 2,
+		.buf = out_buf,
+	};
+
+	out_buf[0] = addr;
+	out_buf[1] = ch;
+
+	if (i2c_transfer(adapter, &msg, 1) == 1)
+		return true;
+
+	if (!tfp->quiet) {
+		DRM_DEBUG_KMS("Unable to write register 0x%02x to %s:%d.\n",
+			  addr, adapter->name, dvo->slave_addr);
+	}
+
+	return false;
+}
+
+static int tfp410_getid(struct intel_dvo_device *dvo, int addr)
+{
+	u8 ch1, ch2;
+
+	if (tfp410_readb(dvo, addr+0, &ch1) &&
+	    tfp410_readb(dvo, addr+1, &ch2))
+		return ((ch2 << 8) & 0xFF00) | (ch1 & 0x00FF);
+
+	return -1;
+}
+
+/* Ti TFP410 driver for chip on i2c bus */
+static bool tfp410_init(struct intel_dvo_device *dvo,
+			struct i2c_adapter *adapter)
+{
+	/* this will detect the tfp410 chip on the specified i2c bus */
+	struct tfp410_priv *tfp;
+	int id;
+
+	tfp = kzalloc(sizeof(struct tfp410_priv), GFP_KERNEL);
+	if (tfp == NULL)
+		return false;
+
+	dvo->i2c_bus = adapter;
+	dvo->dev_priv = tfp;
+	tfp->quiet = true;
+
+	if ((id = tfp410_getid(dvo, TFP410_VID_LO)) != TFP410_VID) {
+		DRM_DEBUG_KMS("tfp410 not detected got VID %X: from %s "
+				"Slave %d.\n",
+			  id, adapter->name, dvo->slave_addr);
+		goto out;
+	}
+
+	if ((id = tfp410_getid(dvo, TFP410_DID_LO)) != TFP410_DID) {
+		DRM_DEBUG_KMS("tfp410 not detected got DID %X: from %s "
+				"Slave %d.\n",
+			  id, adapter->name, dvo->slave_addr);
+		goto out;
+	}
+	tfp->quiet = false;
+	return true;
+out:
+	kfree(tfp);
+	return false;
+}
+
+static enum drm_connector_status tfp410_detect(struct intel_dvo_device *dvo)
+{
+	enum drm_connector_status ret = connector_status_disconnected;
+	u8 ctl2;
+
+	if (tfp410_readb(dvo, TFP410_CTL_2, &ctl2)) {
+		if (ctl2 & TFP410_CTL_2_RSEN)
+			ret = connector_status_connected;
+		else
+			ret = connector_status_disconnected;
+	}
+
+	return ret;
+}
+
+static enum drm_mode_status tfp410_mode_valid(struct intel_dvo_device *dvo,
+					      struct drm_display_mode *mode)
+{
+	return MODE_OK;
+}
+
+static void tfp410_mode_set(struct intel_dvo_device *dvo,
+			    const struct drm_display_mode *mode,
+			    const struct drm_display_mode *adjusted_mode)
+{
+	/* As long as the basics are set up, since we don't have clock dependencies
+	* in the mode setup, we can just leave the registers alone and everything
+	* will work fine.
+	*/
+	/* don't do much */
+	return;
+}
+
+/* set the tfp410 power state */
+static void tfp410_dpms(struct intel_dvo_device *dvo, bool enable)
+{
+	u8 ctl1;
+
+	if (!tfp410_readb(dvo, TFP410_CTL_1, &ctl1))
+		return;
+
+	if (enable)
+		ctl1 |= TFP410_CTL_1_PD;
+	else
+		ctl1 &= ~TFP410_CTL_1_PD;
+
+	tfp410_writeb(dvo, TFP410_CTL_1, ctl1);
+}
+
+static bool tfp410_get_hw_state(struct intel_dvo_device *dvo)
+{
+	u8 ctl1;
+
+	if (!tfp410_readb(dvo, TFP410_CTL_1, &ctl1))
+		return false;
+
+	if (ctl1 & TFP410_CTL_1_PD)
+		return true;
+	else
+		return false;
+}
+
+static void tfp410_dump_regs(struct intel_dvo_device *dvo)
+{
+	u8 val, val2;
+
+	tfp410_readb(dvo, TFP410_REV, &val);
+	DRM_DEBUG_KMS("TFP410_REV: 0x%02X\n", val);
+	tfp410_readb(dvo, TFP410_CTL_1, &val);
+	DRM_DEBUG_KMS("TFP410_CTL1: 0x%02X\n", val);
+	tfp410_readb(dvo, TFP410_CTL_2, &val);
+	DRM_DEBUG_KMS("TFP410_CTL2: 0x%02X\n", val);
+	tfp410_readb(dvo, TFP410_CTL_3, &val);
+	DRM_DEBUG_KMS("TFP410_CTL3: 0x%02X\n", val);
+	tfp410_readb(dvo, TFP410_USERCFG, &val);
+	DRM_DEBUG_KMS("TFP410_USERCFG: 0x%02X\n", val);
+	tfp410_readb(dvo, TFP410_DE_DLY, &val);
+	DRM_DEBUG_KMS("TFP410_DE_DLY: 0x%02X\n", val);
+	tfp410_readb(dvo, TFP410_DE_CTL, &val);
+	DRM_DEBUG_KMS("TFP410_DE_CTL: 0x%02X\n", val);
+	tfp410_readb(dvo, TFP410_DE_TOP, &val);
+	DRM_DEBUG_KMS("TFP410_DE_TOP: 0x%02X\n", val);
+	tfp410_readb(dvo, TFP410_DE_CNT_LO, &val);
+	tfp410_readb(dvo, TFP410_DE_CNT_HI, &val2);
+	DRM_DEBUG_KMS("TFP410_DE_CNT: 0x%02X%02X\n", val2, val);
+	tfp410_readb(dvo, TFP410_DE_LIN_LO, &val);
+	tfp410_readb(dvo, TFP410_DE_LIN_HI, &val2);
+	DRM_DEBUG_KMS("TFP410_DE_LIN: 0x%02X%02X\n", val2, val);
+	tfp410_readb(dvo, TFP410_H_RES_LO, &val);
+	tfp410_readb(dvo, TFP410_H_RES_HI, &val2);
+	DRM_DEBUG_KMS("TFP410_H_RES: 0x%02X%02X\n", val2, val);
+	tfp410_readb(dvo, TFP410_V_RES_LO, &val);
+	tfp410_readb(dvo, TFP410_V_RES_HI, &val2);
+	DRM_DEBUG_KMS("TFP410_V_RES: 0x%02X%02X\n", val2, val);
+}
+
+static void tfp410_destroy(struct intel_dvo_device *dvo)
+{
+	struct tfp410_priv *tfp = dvo->dev_priv;
+
+	if (tfp) {
+		kfree(tfp);
+		dvo->dev_priv = NULL;
+	}
+}
+
+const struct intel_dvo_dev_ops tfp410_ops = {
+	.init = tfp410_init,
+	.detect = tfp410_detect,
+	.mode_valid = tfp410_mode_valid,
+	.mode_set = tfp410_mode_set,
+	.dpms = tfp410_dpms,
+	.get_hw_state = tfp410_get_hw_state,
+	.dump_regs = tfp410_dump_regs,
+	.destroy = tfp410_destroy,
+};
diff --git a/drivers/gpu/drm/i915/display/g4x_dp.c b/drivers/gpu/drm/i915/display/g4x_dp.c
new file mode 100644
index 000000000..e3e3d27ff
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/g4x_dp.c
@@ -0,0 +1,1404 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2020 Intel Corporation
+ *
+ * DisplayPort support for G4x,ILK,SNB,IVB,VLV,CHV (HSW+ handled by the DDI code).
+ */
+
+#include <linux/string_helpers.h>
+
+#include "g4x_dp.h"
+#include "intel_audio.h"
+#include "intel_backlight.h"
+#include "intel_connector.h"
+#include "intel_crtc.h"
+#include "intel_de.h"
+#include "intel_display_power.h"
+#include "intel_display_types.h"
+#include "intel_dp.h"
+#include "intel_dp_link_training.h"
+#include "intel_dpio_phy.h"
+#include "intel_fifo_underrun.h"
+#include "intel_hdmi.h"
+#include "intel_hotplug.h"
+#include "intel_pch_display.h"
+#include "intel_pps.h"
+#include "vlv_sideband.h"
+
+static const struct dpll g4x_dpll[] = {
+	{ .dot = 162000, .p1 = 2, .p2 = 10, .n = 2, .m1 = 23, .m2 = 8, },
+	{ .dot = 270000, .p1 = 1, .p2 = 10, .n = 1, .m1 = 14, .m2 = 2, },
+};
+
+static const struct dpll pch_dpll[] = {
+	{ .dot = 162000, .p1 = 2, .p2 = 10, .n = 1, .m1 = 12, .m2 = 9, },
+	{ .dot = 270000, .p1 = 1, .p2 = 10, .n = 2, .m1 = 14, .m2 = 8, },
+};
+
+static const struct dpll vlv_dpll[] = {
+	{ .dot = 162000, .p1 = 3, .p2 = 2, .n = 5, .m1 = 3, .m2 = 81, },
+	{ .dot = 270000, .p1 = 2, .p2 = 2, .n = 1, .m1 = 2, .m2 = 27, },
+};
+
+static const struct dpll chv_dpll[] = {
+	/* m2 is .22 binary fixed point  */
+	{ .dot = 162000, .p1 = 4, .p2 = 2, .n = 1, .m1 = 2, .m2 = 0x819999a /* 32.4 */ },
+	{ .dot = 270000, .p1 = 4, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 /* 27.0 */ },
+};
+
+const struct dpll *vlv_get_dpll(struct drm_i915_private *i915)
+{
+	return IS_CHERRYVIEW(i915) ? &chv_dpll[0] : &vlv_dpll[0];
+}
+
+void g4x_dp_set_clock(struct intel_encoder *encoder,
+		      struct intel_crtc_state *pipe_config)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	const struct dpll *divisor = NULL;
+	int i, count = 0;
+
+	if (IS_G4X(dev_priv)) {
+		divisor = g4x_dpll;
+		count = ARRAY_SIZE(g4x_dpll);
+	} else if (HAS_PCH_SPLIT(dev_priv)) {
+		divisor = pch_dpll;
+		count = ARRAY_SIZE(pch_dpll);
+	} else if (IS_CHERRYVIEW(dev_priv)) {
+		divisor = chv_dpll;
+		count = ARRAY_SIZE(chv_dpll);
+	} else if (IS_VALLEYVIEW(dev_priv)) {
+		divisor = vlv_dpll;
+		count = ARRAY_SIZE(vlv_dpll);
+	}
+
+	if (divisor && count) {
+		for (i = 0; i < count; i++) {
+			if (pipe_config->port_clock == divisor[i].dot) {
+				pipe_config->dpll = divisor[i];
+				pipe_config->clock_set = true;
+				break;
+			}
+		}
+	}
+}
+
+static void intel_dp_prepare(struct intel_encoder *encoder,
+			     const struct intel_crtc_state *pipe_config)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	enum port port = encoder->port;
+	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+	const struct drm_display_mode *adjusted_mode = &pipe_config->hw.adjusted_mode;
+
+	intel_dp_set_link_params(intel_dp,
+				 pipe_config->port_clock,
+				 pipe_config->lane_count);
+
+	/*
+	 * There are four kinds of DP registers:
+	 * IBX PCH
+	 * SNB CPU
+	 * IVB CPU
+	 * CPT PCH
+	 *
+	 * IBX PCH and CPU are the same for almost everything,
+	 * except that the CPU DP PLL is configured in this
+	 * register
+	 *
+	 * CPT PCH is quite different, having many bits moved
+	 * to the TRANS_DP_CTL register instead. That
+	 * configuration happens (oddly) in ilk_pch_enable
+	 */
+
+	/* Preserve the BIOS-computed detected bit. This is
+	 * supposed to be read-only.
+	 */
+	intel_dp->DP = intel_de_read(dev_priv, intel_dp->output_reg) & DP_DETECTED;
+
+	/* Handle DP bits in common between all three register formats */
+	intel_dp->DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0;
+	intel_dp->DP |= DP_PORT_WIDTH(pipe_config->lane_count);
+
+	/* Split out the IBX/CPU vs CPT settings */
+
+	if (IS_IVYBRIDGE(dev_priv) && port == PORT_A) {
+		if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
+			intel_dp->DP |= DP_SYNC_HS_HIGH;
+		if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
+			intel_dp->DP |= DP_SYNC_VS_HIGH;
+		intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT;
+
+		if (drm_dp_enhanced_frame_cap(intel_dp->dpcd))
+			intel_dp->DP |= DP_ENHANCED_FRAMING;
+
+		intel_dp->DP |= DP_PIPE_SEL_IVB(crtc->pipe);
+	} else if (HAS_PCH_CPT(dev_priv) && port != PORT_A) {
+		u32 trans_dp;
+
+		intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT;
+
+		trans_dp = intel_de_read(dev_priv, TRANS_DP_CTL(crtc->pipe));
+		if (drm_dp_enhanced_frame_cap(intel_dp->dpcd))
+			trans_dp |= TRANS_DP_ENH_FRAMING;
+		else
+			trans_dp &= ~TRANS_DP_ENH_FRAMING;
+		intel_de_write(dev_priv, TRANS_DP_CTL(crtc->pipe), trans_dp);
+	} else {
+		if (IS_G4X(dev_priv) && pipe_config->limited_color_range)
+			intel_dp->DP |= DP_COLOR_RANGE_16_235;
+
+		if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
+			intel_dp->DP |= DP_SYNC_HS_HIGH;
+		if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
+			intel_dp->DP |= DP_SYNC_VS_HIGH;
+		intel_dp->DP |= DP_LINK_TRAIN_OFF;
+
+		if (drm_dp_enhanced_frame_cap(intel_dp->dpcd))
+			intel_dp->DP |= DP_ENHANCED_FRAMING;
+
+		if (IS_CHERRYVIEW(dev_priv))
+			intel_dp->DP |= DP_PIPE_SEL_CHV(crtc->pipe);
+		else
+			intel_dp->DP |= DP_PIPE_SEL(crtc->pipe);
+	}
+}
+
+static void assert_dp_port(struct intel_dp *intel_dp, bool state)
+{
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
+	bool cur_state = intel_de_read(dev_priv, intel_dp->output_reg) & DP_PORT_EN;
+
+	I915_STATE_WARN(cur_state != state,
+			"[ENCODER:%d:%s] state assertion failure (expected %s, current %s)\n",
+			dig_port->base.base.base.id, dig_port->base.base.name,
+			str_on_off(state), str_on_off(cur_state));
+}
+#define assert_dp_port_disabled(d) assert_dp_port((d), false)
+
+static void assert_edp_pll(struct drm_i915_private *dev_priv, bool state)
+{
+	bool cur_state = intel_de_read(dev_priv, DP_A) & DP_PLL_ENABLE;
+
+	I915_STATE_WARN(cur_state != state,
+			"eDP PLL state assertion failure (expected %s, current %s)\n",
+			str_on_off(state), str_on_off(cur_state));
+}
+#define assert_edp_pll_enabled(d) assert_edp_pll((d), true)
+#define assert_edp_pll_disabled(d) assert_edp_pll((d), false)
+
+static void ilk_edp_pll_on(struct intel_dp *intel_dp,
+			   const struct intel_crtc_state *pipe_config)
+{
+	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+
+	assert_transcoder_disabled(dev_priv, pipe_config->cpu_transcoder);
+	assert_dp_port_disabled(intel_dp);
+	assert_edp_pll_disabled(dev_priv);
+
+	drm_dbg_kms(&dev_priv->drm, "enabling eDP PLL for clock %d\n",
+		    pipe_config->port_clock);
+
+	intel_dp->DP &= ~DP_PLL_FREQ_MASK;
+
+	if (pipe_config->port_clock == 162000)
+		intel_dp->DP |= DP_PLL_FREQ_162MHZ;
+	else
+		intel_dp->DP |= DP_PLL_FREQ_270MHZ;
+
+	intel_de_write(dev_priv, DP_A, intel_dp->DP);
+	intel_de_posting_read(dev_priv, DP_A);
+	udelay(500);
+
+	/*
+	 * [DevILK] Work around required when enabling DP PLL
+	 * while a pipe is enabled going to FDI:
+	 * 1. Wait for the start of vertical blank on the enabled pipe going to FDI
+	 * 2. Program DP PLL enable
+	 */
+	if (IS_IRONLAKE(dev_priv))
+		intel_wait_for_vblank_if_active(dev_priv, !crtc->pipe);
+
+	intel_dp->DP |= DP_PLL_ENABLE;
+
+	intel_de_write(dev_priv, DP_A, intel_dp->DP);
+	intel_de_posting_read(dev_priv, DP_A);
+	udelay(200);
+}
+
+static void ilk_edp_pll_off(struct intel_dp *intel_dp,
+			    const struct intel_crtc_state *old_crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+
+	assert_transcoder_disabled(dev_priv, old_crtc_state->cpu_transcoder);
+	assert_dp_port_disabled(intel_dp);
+	assert_edp_pll_enabled(dev_priv);
+
+	drm_dbg_kms(&dev_priv->drm, "disabling eDP PLL\n");
+
+	intel_dp->DP &= ~DP_PLL_ENABLE;
+
+	intel_de_write(dev_priv, DP_A, intel_dp->DP);
+	intel_de_posting_read(dev_priv, DP_A);
+	udelay(200);
+}
+
+static bool cpt_dp_port_selected(struct drm_i915_private *dev_priv,
+				 enum port port, enum pipe *pipe)
+{
+	enum pipe p;
+
+	for_each_pipe(dev_priv, p) {
+		u32 val = intel_de_read(dev_priv, TRANS_DP_CTL(p));
+
+		if ((val & TRANS_DP_PORT_SEL_MASK) == TRANS_DP_PORT_SEL(port)) {
+			*pipe = p;
+			return true;
+		}
+	}
+
+	drm_dbg_kms(&dev_priv->drm, "No pipe for DP port %c found\n",
+		    port_name(port));
+
+	/* must initialize pipe to something for the asserts */
+	*pipe = PIPE_A;
+
+	return false;
+}
+
+bool g4x_dp_port_enabled(struct drm_i915_private *dev_priv,
+			 i915_reg_t dp_reg, enum port port,
+			 enum pipe *pipe)
+{
+	bool ret;
+	u32 val;
+
+	val = intel_de_read(dev_priv, dp_reg);
+
+	ret = val & DP_PORT_EN;
+
+	/* asserts want to know the pipe even if the port is disabled */
+	if (IS_IVYBRIDGE(dev_priv) && port == PORT_A)
+		*pipe = (val & DP_PIPE_SEL_MASK_IVB) >> DP_PIPE_SEL_SHIFT_IVB;
+	else if (HAS_PCH_CPT(dev_priv) && port != PORT_A)
+		ret &= cpt_dp_port_selected(dev_priv, port, pipe);
+	else if (IS_CHERRYVIEW(dev_priv))
+		*pipe = (val & DP_PIPE_SEL_MASK_CHV) >> DP_PIPE_SEL_SHIFT_CHV;
+	else
+		*pipe = (val & DP_PIPE_SEL_MASK) >> DP_PIPE_SEL_SHIFT;
+
+	return ret;
+}
+
+static bool intel_dp_get_hw_state(struct intel_encoder *encoder,
+				  enum pipe *pipe)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	intel_wakeref_t wakeref;
+	bool ret;
+
+	wakeref = intel_display_power_get_if_enabled(dev_priv,
+						     encoder->power_domain);
+	if (!wakeref)
+		return false;
+
+	ret = g4x_dp_port_enabled(dev_priv, intel_dp->output_reg,
+				  encoder->port, pipe);
+
+	intel_display_power_put(dev_priv, encoder->power_domain, wakeref);
+
+	return ret;
+}
+
+static void g4x_dp_get_m_n(struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+
+	if (crtc_state->has_pch_encoder) {
+		intel_pch_transcoder_get_m1_n1(crtc, &crtc_state->dp_m_n);
+		intel_pch_transcoder_get_m2_n2(crtc, &crtc_state->dp_m2_n2);
+	} else {
+		intel_cpu_transcoder_get_m1_n1(crtc, crtc_state->cpu_transcoder,
+					       &crtc_state->dp_m_n);
+		intel_cpu_transcoder_get_m2_n2(crtc, crtc_state->cpu_transcoder,
+					       &crtc_state->dp_m2_n2);
+	}
+}
+
+static void intel_dp_get_config(struct intel_encoder *encoder,
+				struct intel_crtc_state *pipe_config)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	u32 tmp, flags = 0;
+	enum port port = encoder->port;
+	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+
+	if (encoder->type == INTEL_OUTPUT_EDP)
+		pipe_config->output_types |= BIT(INTEL_OUTPUT_EDP);
+	else
+		pipe_config->output_types |= BIT(INTEL_OUTPUT_DP);
+
+	tmp = intel_de_read(dev_priv, intel_dp->output_reg);
+
+	pipe_config->has_audio = tmp & DP_AUDIO_OUTPUT_ENABLE && port != PORT_A;
+
+	if (HAS_PCH_CPT(dev_priv) && port != PORT_A) {
+		u32 trans_dp = intel_de_read(dev_priv,
+					     TRANS_DP_CTL(crtc->pipe));
+
+		if (trans_dp & TRANS_DP_HSYNC_ACTIVE_HIGH)
+			flags |= DRM_MODE_FLAG_PHSYNC;
+		else
+			flags |= DRM_MODE_FLAG_NHSYNC;
+
+		if (trans_dp & TRANS_DP_VSYNC_ACTIVE_HIGH)
+			flags |= DRM_MODE_FLAG_PVSYNC;
+		else
+			flags |= DRM_MODE_FLAG_NVSYNC;
+	} else {
+		if (tmp & DP_SYNC_HS_HIGH)
+			flags |= DRM_MODE_FLAG_PHSYNC;
+		else
+			flags |= DRM_MODE_FLAG_NHSYNC;
+
+		if (tmp & DP_SYNC_VS_HIGH)
+			flags |= DRM_MODE_FLAG_PVSYNC;
+		else
+			flags |= DRM_MODE_FLAG_NVSYNC;
+	}
+
+	pipe_config->hw.adjusted_mode.flags |= flags;
+
+	if (IS_G4X(dev_priv) && tmp & DP_COLOR_RANGE_16_235)
+		pipe_config->limited_color_range = true;
+
+	pipe_config->lane_count =
+		((tmp & DP_PORT_WIDTH_MASK) >> DP_PORT_WIDTH_SHIFT) + 1;
+
+	g4x_dp_get_m_n(pipe_config);
+
+	if (port == PORT_A) {
+		if ((intel_de_read(dev_priv, DP_A) & DP_PLL_FREQ_MASK) == DP_PLL_FREQ_162MHZ)
+			pipe_config->port_clock = 162000;
+		else
+			pipe_config->port_clock = 270000;
+	}
+
+	pipe_config->hw.adjusted_mode.crtc_clock =
+		intel_dotclock_calculate(pipe_config->port_clock,
+					 &pipe_config->dp_m_n);
+
+	if (intel_dp_is_edp(intel_dp))
+		intel_edp_fixup_vbt_bpp(encoder, pipe_config->pipe_bpp);
+}
+
+static void
+intel_dp_link_down(struct intel_encoder *encoder,
+		   const struct intel_crtc_state *old_crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
+	enum port port = encoder->port;
+
+	if (drm_WARN_ON(&dev_priv->drm,
+			(intel_de_read(dev_priv, intel_dp->output_reg) &
+			 DP_PORT_EN) == 0))
+		return;
+
+	drm_dbg_kms(&dev_priv->drm, "\n");
+
+	if ((IS_IVYBRIDGE(dev_priv) && port == PORT_A) ||
+	    (HAS_PCH_CPT(dev_priv) && port != PORT_A)) {
+		intel_dp->DP &= ~DP_LINK_TRAIN_MASK_CPT;
+		intel_dp->DP |= DP_LINK_TRAIN_PAT_IDLE_CPT;
+	} else {
+		intel_dp->DP &= ~DP_LINK_TRAIN_MASK;
+		intel_dp->DP |= DP_LINK_TRAIN_PAT_IDLE;
+	}
+	intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
+	intel_de_posting_read(dev_priv, intel_dp->output_reg);
+
+	intel_dp->DP &= ~(DP_PORT_EN | DP_AUDIO_OUTPUT_ENABLE);
+	intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
+	intel_de_posting_read(dev_priv, intel_dp->output_reg);
+
+	/*
+	 * HW workaround for IBX, we need to move the port
+	 * to transcoder A after disabling it to allow the
+	 * matching HDMI port to be enabled on transcoder A.
+	 */
+	if (HAS_PCH_IBX(dev_priv) && crtc->pipe == PIPE_B && port != PORT_A) {
+		/*
+		 * We get CPU/PCH FIFO underruns on the other pipe when
+		 * doing the workaround. Sweep them under the rug.
+		 */
+		intel_set_cpu_fifo_underrun_reporting(dev_priv, PIPE_A, false);
+		intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, false);
+
+		/* always enable with pattern 1 (as per spec) */
+		intel_dp->DP &= ~(DP_PIPE_SEL_MASK | DP_LINK_TRAIN_MASK);
+		intel_dp->DP |= DP_PORT_EN | DP_PIPE_SEL(PIPE_A) |
+			DP_LINK_TRAIN_PAT_1;
+		intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
+		intel_de_posting_read(dev_priv, intel_dp->output_reg);
+
+		intel_dp->DP &= ~DP_PORT_EN;
+		intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
+		intel_de_posting_read(dev_priv, intel_dp->output_reg);
+
+		intel_wait_for_vblank_if_active(dev_priv, PIPE_A);
+		intel_set_cpu_fifo_underrun_reporting(dev_priv, PIPE_A, true);
+		intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, true);
+	}
+
+	msleep(intel_dp->pps.panel_power_down_delay);
+
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+		intel_wakeref_t wakeref;
+
+		with_intel_pps_lock(intel_dp, wakeref)
+			intel_dp->pps.active_pipe = INVALID_PIPE;
+	}
+}
+
+static void intel_disable_dp(struct intel_atomic_state *state,
+			     struct intel_encoder *encoder,
+			     const struct intel_crtc_state *old_crtc_state,
+			     const struct drm_connector_state *old_conn_state)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+
+	intel_dp->link_trained = false;
+
+	intel_audio_codec_disable(encoder, old_crtc_state, old_conn_state);
+
+	/*
+	 * Make sure the panel is off before trying to change the mode.
+	 * But also ensure that we have vdd while we switch off the panel.
+	 */
+	intel_pps_vdd_on(intel_dp);
+	intel_edp_backlight_off(old_conn_state);
+	intel_dp_set_power(intel_dp, DP_SET_POWER_D3);
+	intel_pps_off(intel_dp);
+}
+
+static void g4x_disable_dp(struct intel_atomic_state *state,
+			   struct intel_encoder *encoder,
+			   const struct intel_crtc_state *old_crtc_state,
+			   const struct drm_connector_state *old_conn_state)
+{
+	intel_disable_dp(state, encoder, old_crtc_state, old_conn_state);
+}
+
+static void vlv_disable_dp(struct intel_atomic_state *state,
+			   struct intel_encoder *encoder,
+			   const struct intel_crtc_state *old_crtc_state,
+			   const struct drm_connector_state *old_conn_state)
+{
+	intel_disable_dp(state, encoder, old_crtc_state, old_conn_state);
+}
+
+static void g4x_post_disable_dp(struct intel_atomic_state *state,
+				struct intel_encoder *encoder,
+				const struct intel_crtc_state *old_crtc_state,
+				const struct drm_connector_state *old_conn_state)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	enum port port = encoder->port;
+
+	/*
+	 * Bspec does not list a specific disable sequence for g4x DP.
+	 * Follow the ilk+ sequence (disable pipe before the port) for
+	 * g4x DP as it does not suffer from underruns like the normal
+	 * g4x modeset sequence (disable pipe after the port).
+	 */
+	intel_dp_link_down(encoder, old_crtc_state);
+
+	/* Only ilk+ has port A */
+	if (port == PORT_A)
+		ilk_edp_pll_off(intel_dp, old_crtc_state);
+}
+
+static void vlv_post_disable_dp(struct intel_atomic_state *state,
+				struct intel_encoder *encoder,
+				const struct intel_crtc_state *old_crtc_state,
+				const struct drm_connector_state *old_conn_state)
+{
+	intel_dp_link_down(encoder, old_crtc_state);
+}
+
+static void chv_post_disable_dp(struct intel_atomic_state *state,
+				struct intel_encoder *encoder,
+				const struct intel_crtc_state *old_crtc_state,
+				const struct drm_connector_state *old_conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+
+	intel_dp_link_down(encoder, old_crtc_state);
+
+	vlv_dpio_get(dev_priv);
+
+	/* Assert data lane reset */
+	chv_data_lane_soft_reset(encoder, old_crtc_state, true);
+
+	vlv_dpio_put(dev_priv);
+}
+
+static void
+cpt_set_link_train(struct intel_dp *intel_dp,
+		   const struct intel_crtc_state *crtc_state,
+		   u8 dp_train_pat)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+	intel_dp->DP &= ~DP_LINK_TRAIN_MASK_CPT;
+
+	switch (intel_dp_training_pattern_symbol(dp_train_pat)) {
+	case DP_TRAINING_PATTERN_DISABLE:
+		intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT;
+		break;
+	case DP_TRAINING_PATTERN_1:
+		intel_dp->DP |= DP_LINK_TRAIN_PAT_1_CPT;
+		break;
+	case DP_TRAINING_PATTERN_2:
+		intel_dp->DP |= DP_LINK_TRAIN_PAT_2_CPT;
+		break;
+	default:
+		MISSING_CASE(intel_dp_training_pattern_symbol(dp_train_pat));
+		return;
+	}
+
+	intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
+	intel_de_posting_read(dev_priv, intel_dp->output_reg);
+}
+
+static void
+g4x_set_link_train(struct intel_dp *intel_dp,
+		   const struct intel_crtc_state *crtc_state,
+		   u8 dp_train_pat)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+	intel_dp->DP &= ~DP_LINK_TRAIN_MASK;
+
+	switch (intel_dp_training_pattern_symbol(dp_train_pat)) {
+	case DP_TRAINING_PATTERN_DISABLE:
+		intel_dp->DP |= DP_LINK_TRAIN_OFF;
+		break;
+	case DP_TRAINING_PATTERN_1:
+		intel_dp->DP |= DP_LINK_TRAIN_PAT_1;
+		break;
+	case DP_TRAINING_PATTERN_2:
+		intel_dp->DP |= DP_LINK_TRAIN_PAT_2;
+		break;
+	default:
+		MISSING_CASE(intel_dp_training_pattern_symbol(dp_train_pat));
+		return;
+	}
+
+	intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
+	intel_de_posting_read(dev_priv, intel_dp->output_reg);
+}
+
+static void intel_dp_enable_port(struct intel_dp *intel_dp,
+				 const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+	/* enable with pattern 1 (as per spec) */
+
+	intel_dp_program_link_training_pattern(intel_dp, crtc_state,
+					       DP_PHY_DPRX, DP_TRAINING_PATTERN_1);
+
+	/*
+	 * Magic for VLV/CHV. We _must_ first set up the register
+	 * without actually enabling the port, and then do another
+	 * write to enable the port. Otherwise link training will
+	 * fail when the power sequencer is freshly used for this port.
+	 */
+	intel_dp->DP |= DP_PORT_EN;
+	if (crtc_state->has_audio)
+		intel_dp->DP |= DP_AUDIO_OUTPUT_ENABLE;
+
+	intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
+	intel_de_posting_read(dev_priv, intel_dp->output_reg);
+}
+
+static void intel_enable_dp(struct intel_atomic_state *state,
+			    struct intel_encoder *encoder,
+			    const struct intel_crtc_state *pipe_config,
+			    const struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	u32 dp_reg = intel_de_read(dev_priv, intel_dp->output_reg);
+	intel_wakeref_t wakeref;
+
+	if (drm_WARN_ON(&dev_priv->drm, dp_reg & DP_PORT_EN))
+		return;
+
+	with_intel_pps_lock(intel_dp, wakeref) {
+		if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
+			vlv_pps_init(encoder, pipe_config);
+
+		intel_dp_enable_port(intel_dp, pipe_config);
+
+		intel_pps_vdd_on_unlocked(intel_dp);
+		intel_pps_on_unlocked(intel_dp);
+		intel_pps_vdd_off_unlocked(intel_dp, true);
+	}
+
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+		unsigned int lane_mask = 0x0;
+
+		if (IS_CHERRYVIEW(dev_priv))
+			lane_mask = intel_dp_unused_lane_mask(pipe_config->lane_count);
+
+		vlv_wait_port_ready(dev_priv, dp_to_dig_port(intel_dp),
+				    lane_mask);
+	}
+
+	intel_dp_set_power(intel_dp, DP_SET_POWER_D0);
+	intel_dp_configure_protocol_converter(intel_dp, pipe_config);
+	intel_dp_check_frl_training(intel_dp);
+	intel_dp_pcon_dsc_configure(intel_dp, pipe_config);
+	intel_dp_start_link_train(intel_dp, pipe_config);
+	intel_dp_stop_link_train(intel_dp, pipe_config);
+
+	intel_audio_codec_enable(encoder, pipe_config, conn_state);
+}
+
+static void g4x_enable_dp(struct intel_atomic_state *state,
+			  struct intel_encoder *encoder,
+			  const struct intel_crtc_state *pipe_config,
+			  const struct drm_connector_state *conn_state)
+{
+	intel_enable_dp(state, encoder, pipe_config, conn_state);
+	intel_edp_backlight_on(pipe_config, conn_state);
+}
+
+static void vlv_enable_dp(struct intel_atomic_state *state,
+			  struct intel_encoder *encoder,
+			  const struct intel_crtc_state *pipe_config,
+			  const struct drm_connector_state *conn_state)
+{
+	intel_edp_backlight_on(pipe_config, conn_state);
+}
+
+static void g4x_pre_enable_dp(struct intel_atomic_state *state,
+			      struct intel_encoder *encoder,
+			      const struct intel_crtc_state *pipe_config,
+			      const struct drm_connector_state *conn_state)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	enum port port = encoder->port;
+
+	intel_dp_prepare(encoder, pipe_config);
+
+	/* Only ilk+ has port A */
+	if (port == PORT_A)
+		ilk_edp_pll_on(intel_dp, pipe_config);
+}
+
+static void vlv_pre_enable_dp(struct intel_atomic_state *state,
+			      struct intel_encoder *encoder,
+			      const struct intel_crtc_state *pipe_config,
+			      const struct drm_connector_state *conn_state)
+{
+	vlv_phy_pre_encoder_enable(encoder, pipe_config);
+
+	intel_enable_dp(state, encoder, pipe_config, conn_state);
+}
+
+static void vlv_dp_pre_pll_enable(struct intel_atomic_state *state,
+				  struct intel_encoder *encoder,
+				  const struct intel_crtc_state *pipe_config,
+				  const struct drm_connector_state *conn_state)
+{
+	intel_dp_prepare(encoder, pipe_config);
+
+	vlv_phy_pre_pll_enable(encoder, pipe_config);
+}
+
+static void chv_pre_enable_dp(struct intel_atomic_state *state,
+			      struct intel_encoder *encoder,
+			      const struct intel_crtc_state *pipe_config,
+			      const struct drm_connector_state *conn_state)
+{
+	chv_phy_pre_encoder_enable(encoder, pipe_config);
+
+	intel_enable_dp(state, encoder, pipe_config, conn_state);
+
+	/* Second common lane will stay alive on its own now */
+	chv_phy_release_cl2_override(encoder);
+}
+
+static void chv_dp_pre_pll_enable(struct intel_atomic_state *state,
+				  struct intel_encoder *encoder,
+				  const struct intel_crtc_state *pipe_config,
+				  const struct drm_connector_state *conn_state)
+{
+	intel_dp_prepare(encoder, pipe_config);
+
+	chv_phy_pre_pll_enable(encoder, pipe_config);
+}
+
+static void chv_dp_post_pll_disable(struct intel_atomic_state *state,
+				    struct intel_encoder *encoder,
+				    const struct intel_crtc_state *old_crtc_state,
+				    const struct drm_connector_state *old_conn_state)
+{
+	chv_phy_post_pll_disable(encoder, old_crtc_state);
+}
+
+static u8 intel_dp_voltage_max_2(struct intel_dp *intel_dp,
+				 const struct intel_crtc_state *crtc_state)
+{
+	return DP_TRAIN_VOLTAGE_SWING_LEVEL_2;
+}
+
+static u8 intel_dp_voltage_max_3(struct intel_dp *intel_dp,
+				 const struct intel_crtc_state *crtc_state)
+{
+	return DP_TRAIN_VOLTAGE_SWING_LEVEL_3;
+}
+
+static u8 intel_dp_preemph_max_2(struct intel_dp *intel_dp)
+{
+	return DP_TRAIN_PRE_EMPH_LEVEL_2;
+}
+
+static u8 intel_dp_preemph_max_3(struct intel_dp *intel_dp)
+{
+	return DP_TRAIN_PRE_EMPH_LEVEL_3;
+}
+
+static void vlv_set_signal_levels(struct intel_encoder *encoder,
+				  const struct intel_crtc_state *crtc_state)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	unsigned long demph_reg_value, preemph_reg_value,
+		uniqtranscale_reg_value;
+	u8 train_set = intel_dp->train_set[0];
+
+	switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) {
+	case DP_TRAIN_PRE_EMPH_LEVEL_0:
+		preemph_reg_value = 0x0004000;
+		switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
+			demph_reg_value = 0x2B405555;
+			uniqtranscale_reg_value = 0x552AB83A;
+			break;
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
+			demph_reg_value = 0x2B404040;
+			uniqtranscale_reg_value = 0x5548B83A;
+			break;
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_2:
+			demph_reg_value = 0x2B245555;
+			uniqtranscale_reg_value = 0x5560B83A;
+			break;
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_3:
+			demph_reg_value = 0x2B405555;
+			uniqtranscale_reg_value = 0x5598DA3A;
+			break;
+		default:
+			return;
+		}
+		break;
+	case DP_TRAIN_PRE_EMPH_LEVEL_1:
+		preemph_reg_value = 0x0002000;
+		switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
+			demph_reg_value = 0x2B404040;
+			uniqtranscale_reg_value = 0x5552B83A;
+			break;
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
+			demph_reg_value = 0x2B404848;
+			uniqtranscale_reg_value = 0x5580B83A;
+			break;
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_2:
+			demph_reg_value = 0x2B404040;
+			uniqtranscale_reg_value = 0x55ADDA3A;
+			break;
+		default:
+			return;
+		}
+		break;
+	case DP_TRAIN_PRE_EMPH_LEVEL_2:
+		preemph_reg_value = 0x0000000;
+		switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
+			demph_reg_value = 0x2B305555;
+			uniqtranscale_reg_value = 0x5570B83A;
+			break;
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
+			demph_reg_value = 0x2B2B4040;
+			uniqtranscale_reg_value = 0x55ADDA3A;
+			break;
+		default:
+			return;
+		}
+		break;
+	case DP_TRAIN_PRE_EMPH_LEVEL_3:
+		preemph_reg_value = 0x0006000;
+		switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
+			demph_reg_value = 0x1B405555;
+			uniqtranscale_reg_value = 0x55ADDA3A;
+			break;
+		default:
+			return;
+		}
+		break;
+	default:
+		return;
+	}
+
+	vlv_set_phy_signal_level(encoder, crtc_state,
+				 demph_reg_value, preemph_reg_value,
+				 uniqtranscale_reg_value, 0);
+}
+
+static void chv_set_signal_levels(struct intel_encoder *encoder,
+				  const struct intel_crtc_state *crtc_state)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	u32 deemph_reg_value, margin_reg_value;
+	bool uniq_trans_scale = false;
+	u8 train_set = intel_dp->train_set[0];
+
+	switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) {
+	case DP_TRAIN_PRE_EMPH_LEVEL_0:
+		switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
+			deemph_reg_value = 128;
+			margin_reg_value = 52;
+			break;
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
+			deemph_reg_value = 128;
+			margin_reg_value = 77;
+			break;
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_2:
+			deemph_reg_value = 128;
+			margin_reg_value = 102;
+			break;
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_3:
+			deemph_reg_value = 128;
+			margin_reg_value = 154;
+			uniq_trans_scale = true;
+			break;
+		default:
+			return;
+		}
+		break;
+	case DP_TRAIN_PRE_EMPH_LEVEL_1:
+		switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
+			deemph_reg_value = 85;
+			margin_reg_value = 78;
+			break;
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
+			deemph_reg_value = 85;
+			margin_reg_value = 116;
+			break;
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_2:
+			deemph_reg_value = 85;
+			margin_reg_value = 154;
+			break;
+		default:
+			return;
+		}
+		break;
+	case DP_TRAIN_PRE_EMPH_LEVEL_2:
+		switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
+			deemph_reg_value = 64;
+			margin_reg_value = 104;
+			break;
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
+			deemph_reg_value = 64;
+			margin_reg_value = 154;
+			break;
+		default:
+			return;
+		}
+		break;
+	case DP_TRAIN_PRE_EMPH_LEVEL_3:
+		switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+		case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
+			deemph_reg_value = 43;
+			margin_reg_value = 154;
+			break;
+		default:
+			return;
+		}
+		break;
+	default:
+		return;
+	}
+
+	chv_set_phy_signal_level(encoder, crtc_state,
+				 deemph_reg_value, margin_reg_value,
+				 uniq_trans_scale);
+}
+
+static u32 g4x_signal_levels(u8 train_set)
+{
+	u32 signal_levels = 0;
+
+	switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
+	default:
+		signal_levels |= DP_VOLTAGE_0_4;
+		break;
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
+		signal_levels |= DP_VOLTAGE_0_6;
+		break;
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_2:
+		signal_levels |= DP_VOLTAGE_0_8;
+		break;
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_3:
+		signal_levels |= DP_VOLTAGE_1_2;
+		break;
+	}
+	switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) {
+	case DP_TRAIN_PRE_EMPH_LEVEL_0:
+	default:
+		signal_levels |= DP_PRE_EMPHASIS_0;
+		break;
+	case DP_TRAIN_PRE_EMPH_LEVEL_1:
+		signal_levels |= DP_PRE_EMPHASIS_3_5;
+		break;
+	case DP_TRAIN_PRE_EMPH_LEVEL_2:
+		signal_levels |= DP_PRE_EMPHASIS_6;
+		break;
+	case DP_TRAIN_PRE_EMPH_LEVEL_3:
+		signal_levels |= DP_PRE_EMPHASIS_9_5;
+		break;
+	}
+	return signal_levels;
+}
+
+static void
+g4x_set_signal_levels(struct intel_encoder *encoder,
+		      const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	u8 train_set = intel_dp->train_set[0];
+	u32 signal_levels;
+
+	signal_levels = g4x_signal_levels(train_set);
+
+	drm_dbg_kms(&dev_priv->drm, "Using signal levels %08x\n",
+		    signal_levels);
+
+	intel_dp->DP &= ~(DP_VOLTAGE_MASK | DP_PRE_EMPHASIS_MASK);
+	intel_dp->DP |= signal_levels;
+
+	intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
+	intel_de_posting_read(dev_priv, intel_dp->output_reg);
+}
+
+/* SNB CPU eDP voltage swing and pre-emphasis control */
+static u32 snb_cpu_edp_signal_levels(u8 train_set)
+{
+	u8 signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK |
+					DP_TRAIN_PRE_EMPHASIS_MASK);
+
+	switch (signal_levels) {
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0:
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0:
+		return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B;
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1:
+		return EDP_LINK_TRAIN_400MV_3_5DB_SNB_B;
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2:
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2:
+		return EDP_LINK_TRAIN_400_600MV_6DB_SNB_B;
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1:
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1:
+		return EDP_LINK_TRAIN_600_800MV_3_5DB_SNB_B;
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0:
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0:
+		return EDP_LINK_TRAIN_800_1200MV_0DB_SNB_B;
+	default:
+		MISSING_CASE(signal_levels);
+		return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B;
+	}
+}
+
+static void
+snb_cpu_edp_set_signal_levels(struct intel_encoder *encoder,
+			      const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	u8 train_set = intel_dp->train_set[0];
+	u32 signal_levels;
+
+	signal_levels = snb_cpu_edp_signal_levels(train_set);
+
+	drm_dbg_kms(&dev_priv->drm, "Using signal levels %08x\n",
+		    signal_levels);
+
+	intel_dp->DP &= ~EDP_LINK_TRAIN_VOL_EMP_MASK_SNB;
+	intel_dp->DP |= signal_levels;
+
+	intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
+	intel_de_posting_read(dev_priv, intel_dp->output_reg);
+}
+
+/* IVB CPU eDP voltage swing and pre-emphasis control */
+static u32 ivb_cpu_edp_signal_levels(u8 train_set)
+{
+	u8 signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK |
+					DP_TRAIN_PRE_EMPHASIS_MASK);
+
+	switch (signal_levels) {
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0:
+		return EDP_LINK_TRAIN_400MV_0DB_IVB;
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1:
+		return EDP_LINK_TRAIN_400MV_3_5DB_IVB;
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2:
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2:
+		return EDP_LINK_TRAIN_400MV_6DB_IVB;
+
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0:
+		return EDP_LINK_TRAIN_600MV_0DB_IVB;
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1:
+		return EDP_LINK_TRAIN_600MV_3_5DB_IVB;
+
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0:
+		return EDP_LINK_TRAIN_800MV_0DB_IVB;
+	case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1:
+		return EDP_LINK_TRAIN_800MV_3_5DB_IVB;
+
+	default:
+		MISSING_CASE(signal_levels);
+		return EDP_LINK_TRAIN_500MV_0DB_IVB;
+	}
+}
+
+static void
+ivb_cpu_edp_set_signal_levels(struct intel_encoder *encoder,
+			      const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	u8 train_set = intel_dp->train_set[0];
+	u32 signal_levels;
+
+	signal_levels = ivb_cpu_edp_signal_levels(train_set);
+
+	drm_dbg_kms(&dev_priv->drm, "Using signal levels %08x\n",
+		    signal_levels);
+
+	intel_dp->DP &= ~EDP_LINK_TRAIN_VOL_EMP_MASK_IVB;
+	intel_dp->DP |= signal_levels;
+
+	intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
+	intel_de_posting_read(dev_priv, intel_dp->output_reg);
+}
+
+/*
+ * If display is now connected check links status,
+ * there has been known issues of link loss triggering
+ * long pulse.
+ *
+ * Some sinks (eg. ASUS PB287Q) seem to perform some
+ * weird HPD ping pong during modesets. So we can apparently
+ * end up with HPD going low during a modeset, and then
+ * going back up soon after. And once that happens we must
+ * retrain the link to get a picture. That's in case no
+ * userspace component reacted to intermittent HPD dip.
+ */
+static enum intel_hotplug_state
+intel_dp_hotplug(struct intel_encoder *encoder,
+		 struct intel_connector *connector)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	struct drm_modeset_acquire_ctx ctx;
+	enum intel_hotplug_state state;
+	int ret;
+
+	if (intel_dp->compliance.test_active &&
+	    intel_dp->compliance.test_type == DP_TEST_LINK_PHY_TEST_PATTERN) {
+		intel_dp_phy_test(encoder);
+		/* just do the PHY test and nothing else */
+		return INTEL_HOTPLUG_UNCHANGED;
+	}
+
+	state = intel_encoder_hotplug(encoder, connector);
+
+	drm_modeset_acquire_init(&ctx, 0);
+
+	for (;;) {
+		ret = intel_dp_retrain_link(encoder, &ctx);
+
+		if (ret == -EDEADLK) {
+			drm_modeset_backoff(&ctx);
+			continue;
+		}
+
+		break;
+	}
+
+	drm_modeset_drop_locks(&ctx);
+	drm_modeset_acquire_fini(&ctx);
+	drm_WARN(encoder->base.dev, ret,
+		 "Acquiring modeset locks failed with %i\n", ret);
+
+	/*
+	 * Keeping it consistent with intel_ddi_hotplug() and
+	 * intel_hdmi_hotplug().
+	 */
+	if (state == INTEL_HOTPLUG_UNCHANGED && !connector->hotplug_retries)
+		state = INTEL_HOTPLUG_RETRY;
+
+	return state;
+}
+
+static bool ibx_digital_port_connected(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	u32 bit = dev_priv->display.hotplug.pch_hpd[encoder->hpd_pin];
+
+	return intel_de_read(dev_priv, SDEISR) & bit;
+}
+
+static bool g4x_digital_port_connected(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	u32 bit;
+
+	switch (encoder->hpd_pin) {
+	case HPD_PORT_B:
+		bit = PORTB_HOTPLUG_LIVE_STATUS_G4X;
+		break;
+	case HPD_PORT_C:
+		bit = PORTC_HOTPLUG_LIVE_STATUS_G4X;
+		break;
+	case HPD_PORT_D:
+		bit = PORTD_HOTPLUG_LIVE_STATUS_G4X;
+		break;
+	default:
+		MISSING_CASE(encoder->hpd_pin);
+		return false;
+	}
+
+	return intel_de_read(dev_priv, PORT_HOTPLUG_STAT) & bit;
+}
+
+static bool gm45_digital_port_connected(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	u32 bit;
+
+	switch (encoder->hpd_pin) {
+	case HPD_PORT_B:
+		bit = PORTB_HOTPLUG_LIVE_STATUS_GM45;
+		break;
+	case HPD_PORT_C:
+		bit = PORTC_HOTPLUG_LIVE_STATUS_GM45;
+		break;
+	case HPD_PORT_D:
+		bit = PORTD_HOTPLUG_LIVE_STATUS_GM45;
+		break;
+	default:
+		MISSING_CASE(encoder->hpd_pin);
+		return false;
+	}
+
+	return intel_de_read(dev_priv, PORT_HOTPLUG_STAT) & bit;
+}
+
+static bool ilk_digital_port_connected(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	u32 bit = dev_priv->display.hotplug.hpd[encoder->hpd_pin];
+
+	return intel_de_read(dev_priv, DEISR) & bit;
+}
+
+static void intel_dp_encoder_destroy(struct drm_encoder *encoder)
+{
+	intel_dp_encoder_flush_work(encoder);
+
+	drm_encoder_cleanup(encoder);
+	kfree(enc_to_dig_port(to_intel_encoder(encoder)));
+}
+
+enum pipe vlv_active_pipe(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+	enum pipe pipe;
+
+	if (g4x_dp_port_enabled(dev_priv, intel_dp->output_reg,
+				encoder->port, &pipe))
+		return pipe;
+
+	return INVALID_PIPE;
+}
+
+static void intel_dp_encoder_reset(struct drm_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(to_intel_encoder(encoder));
+
+	intel_dp->DP = intel_de_read(dev_priv, intel_dp->output_reg);
+
+	intel_dp->reset_link_params = true;
+
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+		intel_wakeref_t wakeref;
+
+		with_intel_pps_lock(intel_dp, wakeref)
+			intel_dp->pps.active_pipe = vlv_active_pipe(intel_dp);
+	}
+
+	intel_pps_encoder_reset(intel_dp);
+}
+
+static const struct drm_encoder_funcs intel_dp_enc_funcs = {
+	.reset = intel_dp_encoder_reset,
+	.destroy = intel_dp_encoder_destroy,
+};
+
+bool g4x_dp_init(struct drm_i915_private *dev_priv,
+		 i915_reg_t output_reg, enum port port)
+{
+	struct intel_digital_port *dig_port;
+	struct intel_encoder *intel_encoder;
+	struct drm_encoder *encoder;
+	struct intel_connector *intel_connector;
+
+	dig_port = kzalloc(sizeof(*dig_port), GFP_KERNEL);
+	if (!dig_port)
+		return false;
+
+	intel_connector = intel_connector_alloc();
+	if (!intel_connector)
+		goto err_connector_alloc;
+
+	intel_encoder = &dig_port->base;
+	encoder = &intel_encoder->base;
+
+	mutex_init(&dig_port->hdcp_mutex);
+
+	if (drm_encoder_init(&dev_priv->drm, &intel_encoder->base,
+			     &intel_dp_enc_funcs, DRM_MODE_ENCODER_TMDS,
+			     "DP %c", port_name(port)))
+		goto err_encoder_init;
+
+	intel_encoder->hotplug = intel_dp_hotplug;
+	intel_encoder->compute_config = intel_dp_compute_config;
+	intel_encoder->get_hw_state = intel_dp_get_hw_state;
+	intel_encoder->get_config = intel_dp_get_config;
+	intel_encoder->sync_state = intel_dp_sync_state;
+	intel_encoder->initial_fastset_check = intel_dp_initial_fastset_check;
+	intel_encoder->update_pipe = intel_backlight_update;
+	intel_encoder->suspend = intel_dp_encoder_suspend;
+	intel_encoder->shutdown = intel_dp_encoder_shutdown;
+	if (IS_CHERRYVIEW(dev_priv)) {
+		intel_encoder->pre_pll_enable = chv_dp_pre_pll_enable;
+		intel_encoder->pre_enable = chv_pre_enable_dp;
+		intel_encoder->enable = vlv_enable_dp;
+		intel_encoder->disable = vlv_disable_dp;
+		intel_encoder->post_disable = chv_post_disable_dp;
+		intel_encoder->post_pll_disable = chv_dp_post_pll_disable;
+	} else if (IS_VALLEYVIEW(dev_priv)) {
+		intel_encoder->pre_pll_enable = vlv_dp_pre_pll_enable;
+		intel_encoder->pre_enable = vlv_pre_enable_dp;
+		intel_encoder->enable = vlv_enable_dp;
+		intel_encoder->disable = vlv_disable_dp;
+		intel_encoder->post_disable = vlv_post_disable_dp;
+	} else {
+		intel_encoder->pre_enable = g4x_pre_enable_dp;
+		intel_encoder->enable = g4x_enable_dp;
+		intel_encoder->disable = g4x_disable_dp;
+		intel_encoder->post_disable = g4x_post_disable_dp;
+	}
+
+	if ((IS_IVYBRIDGE(dev_priv) && port == PORT_A) ||
+	    (HAS_PCH_CPT(dev_priv) && port != PORT_A))
+		dig_port->dp.set_link_train = cpt_set_link_train;
+	else
+		dig_port->dp.set_link_train = g4x_set_link_train;
+
+	if (IS_CHERRYVIEW(dev_priv))
+		intel_encoder->set_signal_levels = chv_set_signal_levels;
+	else if (IS_VALLEYVIEW(dev_priv))
+		intel_encoder->set_signal_levels = vlv_set_signal_levels;
+	else if (IS_IVYBRIDGE(dev_priv) && port == PORT_A)
+		intel_encoder->set_signal_levels = ivb_cpu_edp_set_signal_levels;
+	else if (IS_SANDYBRIDGE(dev_priv) && port == PORT_A)
+		intel_encoder->set_signal_levels = snb_cpu_edp_set_signal_levels;
+	else
+		intel_encoder->set_signal_levels = g4x_set_signal_levels;
+
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv) ||
+	    (HAS_PCH_SPLIT(dev_priv) && port != PORT_A)) {
+		dig_port->dp.preemph_max = intel_dp_preemph_max_3;
+		dig_port->dp.voltage_max = intel_dp_voltage_max_3;
+	} else {
+		dig_port->dp.preemph_max = intel_dp_preemph_max_2;
+		dig_port->dp.voltage_max = intel_dp_voltage_max_2;
+	}
+
+	dig_port->dp.output_reg = output_reg;
+	dig_port->max_lanes = 4;
+
+	intel_encoder->type = INTEL_OUTPUT_DP;
+	intel_encoder->power_domain = intel_display_power_ddi_lanes_domain(dev_priv, port);
+	if (IS_CHERRYVIEW(dev_priv)) {
+		if (port == PORT_D)
+			intel_encoder->pipe_mask = BIT(PIPE_C);
+		else
+			intel_encoder->pipe_mask = BIT(PIPE_A) | BIT(PIPE_B);
+	} else {
+		intel_encoder->pipe_mask = ~0;
+	}
+	intel_encoder->cloneable = 0;
+	intel_encoder->port = port;
+	intel_encoder->hpd_pin = intel_hpd_pin_default(dev_priv, port);
+
+	dig_port->hpd_pulse = intel_dp_hpd_pulse;
+
+	if (HAS_GMCH(dev_priv)) {
+		if (IS_GM45(dev_priv))
+			dig_port->connected = gm45_digital_port_connected;
+		else
+			dig_port->connected = g4x_digital_port_connected;
+	} else {
+		if (port == PORT_A)
+			dig_port->connected = ilk_digital_port_connected;
+		else
+			dig_port->connected = ibx_digital_port_connected;
+	}
+
+	if (port != PORT_A)
+		intel_infoframe_init(dig_port);
+
+	dig_port->aux_ch = intel_bios_port_aux_ch(dev_priv, port);
+	if (!intel_dp_init_connector(dig_port, intel_connector))
+		goto err_init_connector;
+
+	return true;
+
+err_init_connector:
+	drm_encoder_cleanup(encoder);
+err_encoder_init:
+	kfree(intel_connector);
+err_connector_alloc:
+	kfree(dig_port);
+	return false;
+}
diff --git a/drivers/gpu/drm/i915/display/g4x_dp.h b/drivers/gpu/drm/i915/display/g4x_dp.h
new file mode 100644
index 000000000..e1f50263a
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/g4x_dp.h
@@ -0,0 +1,30 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#ifndef _G4X_DP_H_
+#define _G4X_DP_H_
+
+#include <linux/types.h>
+
+#include "i915_reg.h"
+
+enum pipe;
+enum port;
+struct drm_i915_private;
+struct intel_crtc_state;
+struct intel_dp;
+struct intel_encoder;
+
+const struct dpll *vlv_get_dpll(struct drm_i915_private *i915);
+enum pipe vlv_active_pipe(struct intel_dp *intel_dp);
+void g4x_dp_set_clock(struct intel_encoder *encoder,
+		      struct intel_crtc_state *pipe_config);
+bool g4x_dp_port_enabled(struct drm_i915_private *dev_priv,
+			 i915_reg_t dp_reg, enum port port,
+			 enum pipe *pipe);
+bool g4x_dp_init(struct drm_i915_private *dev_priv,
+		 i915_reg_t output_reg, enum port port);
+
+#endif
diff --git a/drivers/gpu/drm/i915/display/g4x_hdmi.c b/drivers/gpu/drm/i915/display/g4x_hdmi.c
new file mode 100644
index 000000000..2b73f5ff0
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/g4x_hdmi.c
@@ -0,0 +1,606 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2020 Intel Corporation
+ *
+ * HDMI support for G4x,ILK,SNB,IVB,VLV,CHV (HSW+ handled by the DDI code).
+ */
+
+#include "g4x_hdmi.h"
+#include "intel_audio.h"
+#include "intel_connector.h"
+#include "intel_crtc.h"
+#include "intel_de.h"
+#include "intel_display_power.h"
+#include "intel_display_types.h"
+#include "intel_dpio_phy.h"
+#include "intel_fifo_underrun.h"
+#include "intel_hdmi.h"
+#include "intel_hotplug.h"
+#include "intel_sdvo.h"
+#include "vlv_sideband.h"
+
+static void intel_hdmi_prepare(struct intel_encoder *encoder,
+			       const struct intel_crtc_state *crtc_state)
+{
+	struct drm_device *dev = encoder->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
+	const struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode;
+	u32 hdmi_val;
+
+	intel_dp_dual_mode_set_tmds_output(intel_hdmi, true);
+
+	hdmi_val = SDVO_ENCODING_HDMI;
+	if (!HAS_PCH_SPLIT(dev_priv) && crtc_state->limited_color_range)
+		hdmi_val |= HDMI_COLOR_RANGE_16_235;
+	if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
+		hdmi_val |= SDVO_VSYNC_ACTIVE_HIGH;
+	if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
+		hdmi_val |= SDVO_HSYNC_ACTIVE_HIGH;
+
+	if (crtc_state->pipe_bpp > 24)
+		hdmi_val |= HDMI_COLOR_FORMAT_12bpc;
+	else
+		hdmi_val |= SDVO_COLOR_FORMAT_8bpc;
+
+	if (crtc_state->has_hdmi_sink)
+		hdmi_val |= HDMI_MODE_SELECT_HDMI;
+
+	if (HAS_PCH_CPT(dev_priv))
+		hdmi_val |= SDVO_PIPE_SEL_CPT(crtc->pipe);
+	else if (IS_CHERRYVIEW(dev_priv))
+		hdmi_val |= SDVO_PIPE_SEL_CHV(crtc->pipe);
+	else
+		hdmi_val |= SDVO_PIPE_SEL(crtc->pipe);
+
+	intel_de_write(dev_priv, intel_hdmi->hdmi_reg, hdmi_val);
+	intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
+}
+
+static bool intel_hdmi_get_hw_state(struct intel_encoder *encoder,
+				    enum pipe *pipe)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
+	intel_wakeref_t wakeref;
+	bool ret;
+
+	wakeref = intel_display_power_get_if_enabled(dev_priv,
+						     encoder->power_domain);
+	if (!wakeref)
+		return false;
+
+	ret = intel_sdvo_port_enabled(dev_priv, intel_hdmi->hdmi_reg, pipe);
+
+	intel_display_power_put(dev_priv, encoder->power_domain, wakeref);
+
+	return ret;
+}
+
+static void intel_hdmi_get_config(struct intel_encoder *encoder,
+				  struct intel_crtc_state *pipe_config)
+{
+	struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
+	struct drm_device *dev = encoder->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	u32 tmp, flags = 0;
+	int dotclock;
+
+	pipe_config->output_types |= BIT(INTEL_OUTPUT_HDMI);
+
+	tmp = intel_de_read(dev_priv, intel_hdmi->hdmi_reg);
+
+	if (tmp & SDVO_HSYNC_ACTIVE_HIGH)
+		flags |= DRM_MODE_FLAG_PHSYNC;
+	else
+		flags |= DRM_MODE_FLAG_NHSYNC;
+
+	if (tmp & SDVO_VSYNC_ACTIVE_HIGH)
+		flags |= DRM_MODE_FLAG_PVSYNC;
+	else
+		flags |= DRM_MODE_FLAG_NVSYNC;
+
+	if (tmp & HDMI_MODE_SELECT_HDMI)
+		pipe_config->has_hdmi_sink = true;
+
+	pipe_config->infoframes.enable |=
+		intel_hdmi_infoframes_enabled(encoder, pipe_config);
+
+	if (pipe_config->infoframes.enable)
+		pipe_config->has_infoframe = true;
+
+	if (tmp & HDMI_AUDIO_ENABLE)
+		pipe_config->has_audio = true;
+
+	if (!HAS_PCH_SPLIT(dev_priv) &&
+	    tmp & HDMI_COLOR_RANGE_16_235)
+		pipe_config->limited_color_range = true;
+
+	pipe_config->hw.adjusted_mode.flags |= flags;
+
+	if ((tmp & SDVO_COLOR_FORMAT_MASK) == HDMI_COLOR_FORMAT_12bpc)
+		dotclock = DIV_ROUND_CLOSEST(pipe_config->port_clock * 2, 3);
+	else
+		dotclock = pipe_config->port_clock;
+
+	if (pipe_config->pixel_multiplier)
+		dotclock /= pipe_config->pixel_multiplier;
+
+	pipe_config->hw.adjusted_mode.crtc_clock = dotclock;
+
+	pipe_config->lane_count = 4;
+
+	intel_hdmi_read_gcp_infoframe(encoder, pipe_config);
+
+	intel_read_infoframe(encoder, pipe_config,
+			     HDMI_INFOFRAME_TYPE_AVI,
+			     &pipe_config->infoframes.avi);
+	intel_read_infoframe(encoder, pipe_config,
+			     HDMI_INFOFRAME_TYPE_SPD,
+			     &pipe_config->infoframes.spd);
+	intel_read_infoframe(encoder, pipe_config,
+			     HDMI_INFOFRAME_TYPE_VENDOR,
+			     &pipe_config->infoframes.hdmi);
+}
+
+static void g4x_enable_hdmi(struct intel_atomic_state *state,
+			    struct intel_encoder *encoder,
+			    const struct intel_crtc_state *pipe_config,
+			    const struct drm_connector_state *conn_state)
+{
+	struct drm_device *dev = encoder->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
+	u32 temp;
+
+	temp = intel_de_read(dev_priv, intel_hdmi->hdmi_reg);
+
+	temp |= SDVO_ENABLE;
+	if (pipe_config->has_audio)
+		temp |= HDMI_AUDIO_ENABLE;
+
+	intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
+	intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
+
+	drm_WARN_ON(&dev_priv->drm, pipe_config->has_audio &&
+		    !pipe_config->has_hdmi_sink);
+	intel_audio_codec_enable(encoder, pipe_config, conn_state);
+}
+
+static void ibx_enable_hdmi(struct intel_atomic_state *state,
+			    struct intel_encoder *encoder,
+			    const struct intel_crtc_state *pipe_config,
+			    const struct drm_connector_state *conn_state)
+{
+	struct drm_device *dev = encoder->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
+	u32 temp;
+
+	temp = intel_de_read(dev_priv, intel_hdmi->hdmi_reg);
+
+	temp |= SDVO_ENABLE;
+	if (pipe_config->has_audio)
+		temp |= HDMI_AUDIO_ENABLE;
+
+	/*
+	 * HW workaround, need to write this twice for issue
+	 * that may result in first write getting masked.
+	 */
+	intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
+	intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
+	intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
+	intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
+
+	/*
+	 * HW workaround, need to toggle enable bit off and on
+	 * for 12bpc with pixel repeat.
+	 *
+	 * FIXME: BSpec says this should be done at the end of
+	 * the modeset sequence, so not sure if this isn't too soon.
+	 */
+	if (pipe_config->pipe_bpp > 24 &&
+	    pipe_config->pixel_multiplier > 1) {
+		intel_de_write(dev_priv, intel_hdmi->hdmi_reg,
+			       temp & ~SDVO_ENABLE);
+		intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
+
+		/*
+		 * HW workaround, need to write this twice for issue
+		 * that may result in first write getting masked.
+		 */
+		intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
+		intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
+		intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
+		intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
+	}
+
+	drm_WARN_ON(&dev_priv->drm, pipe_config->has_audio &&
+		    !pipe_config->has_hdmi_sink);
+	intel_audio_codec_enable(encoder, pipe_config, conn_state);
+}
+
+static void cpt_enable_hdmi(struct intel_atomic_state *state,
+			    struct intel_encoder *encoder,
+			    const struct intel_crtc_state *pipe_config,
+			    const struct drm_connector_state *conn_state)
+{
+	struct drm_device *dev = encoder->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+	struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
+	enum pipe pipe = crtc->pipe;
+	u32 temp;
+
+	temp = intel_de_read(dev_priv, intel_hdmi->hdmi_reg);
+
+	temp |= SDVO_ENABLE;
+	if (pipe_config->has_audio)
+		temp |= HDMI_AUDIO_ENABLE;
+
+	/*
+	 * WaEnableHDMI8bpcBefore12bpc:snb,ivb
+	 *
+	 * The procedure for 12bpc is as follows:
+	 * 1. disable HDMI clock gating
+	 * 2. enable HDMI with 8bpc
+	 * 3. enable HDMI with 12bpc
+	 * 4. enable HDMI clock gating
+	 */
+
+	if (pipe_config->pipe_bpp > 24) {
+		intel_de_write(dev_priv, TRANS_CHICKEN1(pipe),
+			       intel_de_read(dev_priv, TRANS_CHICKEN1(pipe)) | TRANS_CHICKEN1_HDMIUNIT_GC_DISABLE);
+
+		temp &= ~SDVO_COLOR_FORMAT_MASK;
+		temp |= SDVO_COLOR_FORMAT_8bpc;
+	}
+
+	intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
+	intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
+
+	if (pipe_config->pipe_bpp > 24) {
+		temp &= ~SDVO_COLOR_FORMAT_MASK;
+		temp |= HDMI_COLOR_FORMAT_12bpc;
+
+		intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
+		intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
+
+		intel_de_write(dev_priv, TRANS_CHICKEN1(pipe),
+			       intel_de_read(dev_priv, TRANS_CHICKEN1(pipe)) & ~TRANS_CHICKEN1_HDMIUNIT_GC_DISABLE);
+	}
+
+	drm_WARN_ON(&dev_priv->drm, pipe_config->has_audio &&
+		    !pipe_config->has_hdmi_sink);
+	intel_audio_codec_enable(encoder, pipe_config, conn_state);
+}
+
+static void vlv_enable_hdmi(struct intel_atomic_state *state,
+			    struct intel_encoder *encoder,
+			    const struct intel_crtc_state *pipe_config,
+			    const struct drm_connector_state *conn_state)
+{
+}
+
+static void intel_disable_hdmi(struct intel_atomic_state *state,
+			       struct intel_encoder *encoder,
+			       const struct intel_crtc_state *old_crtc_state,
+			       const struct drm_connector_state *old_conn_state)
+{
+	struct drm_device *dev = encoder->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
+	struct intel_digital_port *dig_port =
+		hdmi_to_dig_port(intel_hdmi);
+	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
+	u32 temp;
+
+	temp = intel_de_read(dev_priv, intel_hdmi->hdmi_reg);
+
+	temp &= ~(SDVO_ENABLE | HDMI_AUDIO_ENABLE);
+	intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
+	intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
+
+	/*
+	 * HW workaround for IBX, we need to move the port
+	 * to transcoder A after disabling it to allow the
+	 * matching DP port to be enabled on transcoder A.
+	 */
+	if (HAS_PCH_IBX(dev_priv) && crtc->pipe == PIPE_B) {
+		/*
+		 * We get CPU/PCH FIFO underruns on the other pipe when
+		 * doing the workaround. Sweep them under the rug.
+		 */
+		intel_set_cpu_fifo_underrun_reporting(dev_priv, PIPE_A, false);
+		intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, false);
+
+		temp &= ~SDVO_PIPE_SEL_MASK;
+		temp |= SDVO_ENABLE | SDVO_PIPE_SEL(PIPE_A);
+		/*
+		 * HW workaround, need to write this twice for issue
+		 * that may result in first write getting masked.
+		 */
+		intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
+		intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
+		intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
+		intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
+
+		temp &= ~SDVO_ENABLE;
+		intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
+		intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
+
+		intel_wait_for_vblank_if_active(dev_priv, PIPE_A);
+		intel_set_cpu_fifo_underrun_reporting(dev_priv, PIPE_A, true);
+		intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, true);
+	}
+
+	dig_port->set_infoframes(encoder,
+				       false,
+				       old_crtc_state, old_conn_state);
+
+	intel_dp_dual_mode_set_tmds_output(intel_hdmi, false);
+}
+
+static void g4x_disable_hdmi(struct intel_atomic_state *state,
+			     struct intel_encoder *encoder,
+			     const struct intel_crtc_state *old_crtc_state,
+			     const struct drm_connector_state *old_conn_state)
+{
+	intel_audio_codec_disable(encoder, old_crtc_state, old_conn_state);
+
+	intel_disable_hdmi(state, encoder, old_crtc_state, old_conn_state);
+}
+
+static void pch_disable_hdmi(struct intel_atomic_state *state,
+			     struct intel_encoder *encoder,
+			     const struct intel_crtc_state *old_crtc_state,
+			     const struct drm_connector_state *old_conn_state)
+{
+	intel_audio_codec_disable(encoder, old_crtc_state, old_conn_state);
+}
+
+static void pch_post_disable_hdmi(struct intel_atomic_state *state,
+				  struct intel_encoder *encoder,
+				  const struct intel_crtc_state *old_crtc_state,
+				  const struct drm_connector_state *old_conn_state)
+{
+	intel_disable_hdmi(state, encoder, old_crtc_state, old_conn_state);
+}
+
+static void intel_hdmi_pre_enable(struct intel_atomic_state *state,
+				  struct intel_encoder *encoder,
+				  const struct intel_crtc_state *pipe_config,
+				  const struct drm_connector_state *conn_state)
+{
+	struct intel_digital_port *dig_port =
+		enc_to_dig_port(encoder);
+
+	intel_hdmi_prepare(encoder, pipe_config);
+
+	dig_port->set_infoframes(encoder,
+				       pipe_config->has_infoframe,
+				       pipe_config, conn_state);
+}
+
+static void vlv_hdmi_pre_enable(struct intel_atomic_state *state,
+				struct intel_encoder *encoder,
+				const struct intel_crtc_state *pipe_config,
+				const struct drm_connector_state *conn_state)
+{
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+
+	vlv_phy_pre_encoder_enable(encoder, pipe_config);
+
+	/* HDMI 1.0V-2dB */
+	vlv_set_phy_signal_level(encoder, pipe_config,
+				 0x2b245f5f, 0x00002000,
+				 0x5578b83a, 0x2b247878);
+
+	dig_port->set_infoframes(encoder,
+			      pipe_config->has_infoframe,
+			      pipe_config, conn_state);
+
+	g4x_enable_hdmi(state, encoder, pipe_config, conn_state);
+
+	vlv_wait_port_ready(dev_priv, dig_port, 0x0);
+}
+
+static void vlv_hdmi_pre_pll_enable(struct intel_atomic_state *state,
+				    struct intel_encoder *encoder,
+				    const struct intel_crtc_state *pipe_config,
+				    const struct drm_connector_state *conn_state)
+{
+	intel_hdmi_prepare(encoder, pipe_config);
+
+	vlv_phy_pre_pll_enable(encoder, pipe_config);
+}
+
+static void chv_hdmi_pre_pll_enable(struct intel_atomic_state *state,
+				    struct intel_encoder *encoder,
+				    const struct intel_crtc_state *pipe_config,
+				    const struct drm_connector_state *conn_state)
+{
+	intel_hdmi_prepare(encoder, pipe_config);
+
+	chv_phy_pre_pll_enable(encoder, pipe_config);
+}
+
+static void chv_hdmi_post_pll_disable(struct intel_atomic_state *state,
+				      struct intel_encoder *encoder,
+				      const struct intel_crtc_state *old_crtc_state,
+				      const struct drm_connector_state *old_conn_state)
+{
+	chv_phy_post_pll_disable(encoder, old_crtc_state);
+}
+
+static void vlv_hdmi_post_disable(struct intel_atomic_state *state,
+				  struct intel_encoder *encoder,
+				  const struct intel_crtc_state *old_crtc_state,
+				  const struct drm_connector_state *old_conn_state)
+{
+	/* Reset lanes to avoid HDMI flicker (VLV w/a) */
+	vlv_phy_reset_lanes(encoder, old_crtc_state);
+}
+
+static void chv_hdmi_post_disable(struct intel_atomic_state *state,
+				  struct intel_encoder *encoder,
+				  const struct intel_crtc_state *old_crtc_state,
+				  const struct drm_connector_state *old_conn_state)
+{
+	struct drm_device *dev = encoder->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+
+	vlv_dpio_get(dev_priv);
+
+	/* Assert data lane reset */
+	chv_data_lane_soft_reset(encoder, old_crtc_state, true);
+
+	vlv_dpio_put(dev_priv);
+}
+
+static void chv_hdmi_pre_enable(struct intel_atomic_state *state,
+				struct intel_encoder *encoder,
+				const struct intel_crtc_state *pipe_config,
+				const struct drm_connector_state *conn_state)
+{
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	struct drm_device *dev = encoder->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+
+	chv_phy_pre_encoder_enable(encoder, pipe_config);
+
+	/* FIXME: Program the support xxx V-dB */
+	/* Use 800mV-0dB */
+	chv_set_phy_signal_level(encoder, pipe_config, 128, 102, false);
+
+	dig_port->set_infoframes(encoder,
+			      pipe_config->has_infoframe,
+			      pipe_config, conn_state);
+
+	g4x_enable_hdmi(state, encoder, pipe_config, conn_state);
+
+	vlv_wait_port_ready(dev_priv, dig_port, 0x0);
+
+	/* Second common lane will stay alive on its own now */
+	chv_phy_release_cl2_override(encoder);
+}
+
+static const struct drm_encoder_funcs intel_hdmi_enc_funcs = {
+	.destroy = intel_encoder_destroy,
+};
+
+static enum intel_hotplug_state
+intel_hdmi_hotplug(struct intel_encoder *encoder,
+		   struct intel_connector *connector)
+{
+	enum intel_hotplug_state state;
+
+	state = intel_encoder_hotplug(encoder, connector);
+
+	/*
+	 * On many platforms the HDMI live state signal is known to be
+	 * unreliable, so we can't use it to detect if a sink is connected or
+	 * not. Instead we detect if it's connected based on whether we can
+	 * read the EDID or not. That in turn has a problem during disconnect,
+	 * since the HPD interrupt may be raised before the DDC lines get
+	 * disconnected (due to how the required length of DDC vs. HPD
+	 * connector pins are specified) and so we'll still be able to get a
+	 * valid EDID. To solve this schedule another detection cycle if this
+	 * time around we didn't detect any change in the sink's connection
+	 * status.
+	 */
+	if (state == INTEL_HOTPLUG_UNCHANGED && !connector->hotplug_retries)
+		state = INTEL_HOTPLUG_RETRY;
+
+	return state;
+}
+
+void g4x_hdmi_init(struct drm_i915_private *dev_priv,
+		   i915_reg_t hdmi_reg, enum port port)
+{
+	struct intel_digital_port *dig_port;
+	struct intel_encoder *intel_encoder;
+	struct intel_connector *intel_connector;
+
+	dig_port = kzalloc(sizeof(*dig_port), GFP_KERNEL);
+	if (!dig_port)
+		return;
+
+	intel_connector = intel_connector_alloc();
+	if (!intel_connector) {
+		kfree(dig_port);
+		return;
+	}
+
+	intel_encoder = &dig_port->base;
+
+	mutex_init(&dig_port->hdcp_mutex);
+
+	drm_encoder_init(&dev_priv->drm, &intel_encoder->base,
+			 &intel_hdmi_enc_funcs, DRM_MODE_ENCODER_TMDS,
+			 "HDMI %c", port_name(port));
+
+	intel_encoder->hotplug = intel_hdmi_hotplug;
+	intel_encoder->compute_config = intel_hdmi_compute_config;
+	if (HAS_PCH_SPLIT(dev_priv)) {
+		intel_encoder->disable = pch_disable_hdmi;
+		intel_encoder->post_disable = pch_post_disable_hdmi;
+	} else {
+		intel_encoder->disable = g4x_disable_hdmi;
+	}
+	intel_encoder->get_hw_state = intel_hdmi_get_hw_state;
+	intel_encoder->get_config = intel_hdmi_get_config;
+	if (IS_CHERRYVIEW(dev_priv)) {
+		intel_encoder->pre_pll_enable = chv_hdmi_pre_pll_enable;
+		intel_encoder->pre_enable = chv_hdmi_pre_enable;
+		intel_encoder->enable = vlv_enable_hdmi;
+		intel_encoder->post_disable = chv_hdmi_post_disable;
+		intel_encoder->post_pll_disable = chv_hdmi_post_pll_disable;
+	} else if (IS_VALLEYVIEW(dev_priv)) {
+		intel_encoder->pre_pll_enable = vlv_hdmi_pre_pll_enable;
+		intel_encoder->pre_enable = vlv_hdmi_pre_enable;
+		intel_encoder->enable = vlv_enable_hdmi;
+		intel_encoder->post_disable = vlv_hdmi_post_disable;
+	} else {
+		intel_encoder->pre_enable = intel_hdmi_pre_enable;
+		if (HAS_PCH_CPT(dev_priv))
+			intel_encoder->enable = cpt_enable_hdmi;
+		else if (HAS_PCH_IBX(dev_priv))
+			intel_encoder->enable = ibx_enable_hdmi;
+		else
+			intel_encoder->enable = g4x_enable_hdmi;
+	}
+	intel_encoder->shutdown = intel_hdmi_encoder_shutdown;
+
+	intel_encoder->type = INTEL_OUTPUT_HDMI;
+	intel_encoder->power_domain = intel_display_power_ddi_lanes_domain(dev_priv, port);
+	intel_encoder->port = port;
+	if (IS_CHERRYVIEW(dev_priv)) {
+		if (port == PORT_D)
+			intel_encoder->pipe_mask = BIT(PIPE_C);
+		else
+			intel_encoder->pipe_mask = BIT(PIPE_A) | BIT(PIPE_B);
+	} else {
+		intel_encoder->pipe_mask = ~0;
+	}
+	intel_encoder->cloneable = 1 << INTEL_OUTPUT_ANALOG;
+	intel_encoder->hpd_pin = intel_hpd_pin_default(dev_priv, port);
+	/*
+	 * BSpec is unclear about HDMI+HDMI cloning on g4x, but it seems
+	 * to work on real hardware. And since g4x can send infoframes to
+	 * only one port anyway, nothing is lost by allowing it.
+	 */
+	if (IS_G4X(dev_priv))
+		intel_encoder->cloneable |= 1 << INTEL_OUTPUT_HDMI;
+
+	dig_port->hdmi.hdmi_reg = hdmi_reg;
+	dig_port->dp.output_reg = INVALID_MMIO_REG;
+	dig_port->max_lanes = 4;
+
+	intel_infoframe_init(dig_port);
+
+	dig_port->aux_ch = intel_bios_port_aux_ch(dev_priv, port);
+	intel_hdmi_init_connector(dig_port, intel_connector);
+}
diff --git a/drivers/gpu/drm/i915/display/g4x_hdmi.h b/drivers/gpu/drm/i915/display/g4x_hdmi.h
new file mode 100644
index 000000000..db9a93bc9
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/g4x_hdmi.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#ifndef _G4X_HDMI_H_
+#define _G4X_HDMI_H_
+
+#include <linux/types.h>
+
+#include "i915_reg_defs.h"
+
+enum port;
+struct drm_i915_private;
+
+void g4x_hdmi_init(struct drm_i915_private *dev_priv,
+		   i915_reg_t hdmi_reg, enum port port);
+
+#endif
diff --git a/drivers/gpu/drm/i915/display/hsw_ips.c b/drivers/gpu/drm/i915/display/hsw_ips.c
new file mode 100644
index 000000000..a5be4af79
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/hsw_ips.c
@@ -0,0 +1,271 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#include "hsw_ips.h"
+#include "i915_drv.h"
+#include "i915_reg.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_pcode.h"
+
+static void hsw_ips_enable(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+
+	if (!crtc_state->ips_enabled)
+		return;
+
+	/*
+	 * We can only enable IPS after we enable a plane and wait for a vblank
+	 * This function is called from post_plane_update, which is run after
+	 * a vblank wait.
+	 */
+	drm_WARN_ON(&i915->drm,
+		    !(crtc_state->active_planes & ~BIT(PLANE_CURSOR)));
+
+	if (IS_BROADWELL(i915)) {
+		drm_WARN_ON(&i915->drm,
+			    snb_pcode_write(&i915->uncore, DISPLAY_IPS_CONTROL,
+					    IPS_ENABLE | IPS_PCODE_CONTROL));
+		/*
+		 * Quoting Art Runyan: "its not safe to expect any particular
+		 * value in IPS_CTL bit 31 after enabling IPS through the
+		 * mailbox." Moreover, the mailbox may return a bogus state,
+		 * so we need to just enable it and continue on.
+		 */
+	} else {
+		intel_de_write(i915, IPS_CTL, IPS_ENABLE);
+		/*
+		 * The bit only becomes 1 in the next vblank, so this wait here
+		 * is essentially intel_wait_for_vblank. If we don't have this
+		 * and don't wait for vblanks until the end of crtc_enable, then
+		 * the HW state readout code will complain that the expected
+		 * IPS_CTL value is not the one we read.
+		 */
+		if (intel_de_wait_for_set(i915, IPS_CTL, IPS_ENABLE, 50))
+			drm_err(&i915->drm,
+				"Timed out waiting for IPS enable\n");
+	}
+}
+
+bool hsw_ips_disable(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	bool need_vblank_wait = false;
+
+	if (!crtc_state->ips_enabled)
+		return need_vblank_wait;
+
+	if (IS_BROADWELL(i915)) {
+		drm_WARN_ON(&i915->drm,
+			    snb_pcode_write(&i915->uncore, DISPLAY_IPS_CONTROL, 0));
+		/*
+		 * Wait for PCODE to finish disabling IPS. The BSpec specified
+		 * 42ms timeout value leads to occasional timeouts so use 100ms
+		 * instead.
+		 */
+		if (intel_de_wait_for_clear(i915, IPS_CTL, IPS_ENABLE, 100))
+			drm_err(&i915->drm,
+				"Timed out waiting for IPS disable\n");
+	} else {
+		intel_de_write(i915, IPS_CTL, 0);
+		intel_de_posting_read(i915, IPS_CTL);
+	}
+
+	/* We need to wait for a vblank before we can disable the plane. */
+	need_vblank_wait = true;
+
+	return need_vblank_wait;
+}
+
+static bool hsw_ips_need_disable(struct intel_atomic_state *state,
+				 struct intel_crtc *crtc)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_crtc_state *old_crtc_state =
+		intel_atomic_get_old_crtc_state(state, crtc);
+	const struct intel_crtc_state *new_crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+
+	if (!old_crtc_state->ips_enabled)
+		return false;
+
+	if (intel_crtc_needs_modeset(new_crtc_state))
+		return true;
+
+	/*
+	 * Workaround : Do not read or write the pipe palette/gamma data while
+	 * GAMMA_MODE is configured for split gamma and IPS_CTL has IPS enabled.
+	 *
+	 * Disable IPS before we program the LUT.
+	 */
+	if (IS_HASWELL(i915) &&
+	    (new_crtc_state->uapi.color_mgmt_changed ||
+	     new_crtc_state->update_pipe) &&
+	    new_crtc_state->gamma_mode == GAMMA_MODE_MODE_SPLIT)
+		return true;
+
+	return !new_crtc_state->ips_enabled;
+}
+
+bool hsw_ips_pre_update(struct intel_atomic_state *state,
+			struct intel_crtc *crtc)
+{
+	const struct intel_crtc_state *old_crtc_state =
+		intel_atomic_get_old_crtc_state(state, crtc);
+
+	if (!hsw_ips_need_disable(state, crtc))
+		return false;
+
+	return hsw_ips_disable(old_crtc_state);
+}
+
+static bool hsw_ips_need_enable(struct intel_atomic_state *state,
+				struct intel_crtc *crtc)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_crtc_state *old_crtc_state =
+		intel_atomic_get_old_crtc_state(state, crtc);
+	const struct intel_crtc_state *new_crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+
+	if (!new_crtc_state->ips_enabled)
+		return false;
+
+	if (intel_crtc_needs_modeset(new_crtc_state))
+		return true;
+
+	/*
+	 * Workaround : Do not read or write the pipe palette/gamma data while
+	 * GAMMA_MODE is configured for split gamma and IPS_CTL has IPS enabled.
+	 *
+	 * Re-enable IPS after the LUT has been programmed.
+	 */
+	if (IS_HASWELL(i915) &&
+	    (new_crtc_state->uapi.color_mgmt_changed ||
+	     new_crtc_state->update_pipe) &&
+	    new_crtc_state->gamma_mode == GAMMA_MODE_MODE_SPLIT)
+		return true;
+
+	/*
+	 * We can't read out IPS on broadwell, assume the worst and
+	 * forcibly enable IPS on the first fastset.
+	 */
+	if (new_crtc_state->update_pipe && old_crtc_state->inherited)
+		return true;
+
+	return !old_crtc_state->ips_enabled;
+}
+
+void hsw_ips_post_update(struct intel_atomic_state *state,
+			 struct intel_crtc *crtc)
+{
+	const struct intel_crtc_state *new_crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+
+	if (!hsw_ips_need_enable(state, crtc))
+		return;
+
+	hsw_ips_enable(new_crtc_state);
+}
+
+/* IPS only exists on ULT machines and is tied to pipe A. */
+bool hsw_crtc_supports_ips(struct intel_crtc *crtc)
+{
+	return HAS_IPS(to_i915(crtc->base.dev)) && crtc->pipe == PIPE_A;
+}
+
+bool hsw_crtc_state_ips_capable(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+
+	/* IPS only exists on ULT machines and is tied to pipe A. */
+	if (!hsw_crtc_supports_ips(crtc))
+		return false;
+
+	if (!i915->params.enable_ips)
+		return false;
+
+	if (crtc_state->pipe_bpp > 24)
+		return false;
+
+	/*
+	 * We compare against max which means we must take
+	 * the increased cdclk requirement into account when
+	 * calculating the new cdclk.
+	 *
+	 * Should measure whether using a lower cdclk w/o IPS
+	 */
+	if (IS_BROADWELL(i915) &&
+	    crtc_state->pixel_rate > i915->display.cdclk.max_cdclk_freq * 95 / 100)
+		return false;
+
+	return true;
+}
+
+int hsw_ips_compute_config(struct intel_atomic_state *state,
+			   struct intel_crtc *crtc)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+
+	crtc_state->ips_enabled = false;
+
+	if (!hsw_crtc_state_ips_capable(crtc_state))
+		return 0;
+
+	/*
+	 * When IPS gets enabled, the pipe CRC changes. Since IPS gets
+	 * enabled and disabled dynamically based on package C states,
+	 * user space can't make reliable use of the CRCs, so let's just
+	 * completely disable it.
+	 */
+	if (crtc_state->crc_enabled)
+		return 0;
+
+	/* IPS should be fine as long as at least one plane is enabled. */
+	if (!(crtc_state->active_planes & ~BIT(PLANE_CURSOR)))
+		return 0;
+
+	if (IS_BROADWELL(i915)) {
+		const struct intel_cdclk_state *cdclk_state;
+
+		cdclk_state = intel_atomic_get_cdclk_state(state);
+		if (IS_ERR(cdclk_state))
+			return PTR_ERR(cdclk_state);
+
+		/* pixel rate mustn't exceed 95% of cdclk with IPS on BDW */
+		if (crtc_state->pixel_rate > cdclk_state->logical.cdclk * 95 / 100)
+			return 0;
+	}
+
+	crtc_state->ips_enabled = true;
+
+	return 0;
+}
+
+void hsw_ips_get_config(struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+
+	if (!hsw_crtc_supports_ips(crtc))
+		return;
+
+	if (IS_HASWELL(i915)) {
+		crtc_state->ips_enabled = intel_de_read(i915, IPS_CTL) & IPS_ENABLE;
+	} else {
+		/*
+		 * We cannot readout IPS state on broadwell, set to
+		 * true so we can set it to a defined state on first
+		 * commit.
+		 */
+		crtc_state->ips_enabled = true;
+	}
+}
diff --git a/drivers/gpu/drm/i915/display/hsw_ips.h b/drivers/gpu/drm/i915/display/hsw_ips.h
new file mode 100644
index 000000000..4564dee49
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/hsw_ips.h
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#ifndef __HSW_IPS_H__
+#define __HSW_IPS_H__
+
+#include <linux/types.h>
+
+struct intel_atomic_state;
+struct intel_crtc;
+struct intel_crtc_state;
+
+bool hsw_ips_disable(const struct intel_crtc_state *crtc_state);
+bool hsw_ips_pre_update(struct intel_atomic_state *state,
+			struct intel_crtc *crtc);
+void hsw_ips_post_update(struct intel_atomic_state *state,
+			 struct intel_crtc *crtc);
+bool hsw_crtc_supports_ips(struct intel_crtc *crtc);
+bool hsw_crtc_state_ips_capable(const struct intel_crtc_state *crtc_state);
+int hsw_ips_compute_config(struct intel_atomic_state *state,
+			   struct intel_crtc *crtc);
+void hsw_ips_get_config(struct intel_crtc_state *crtc_state);
+
+#endif /* __HSW_IPS_H__ */
diff --git a/drivers/gpu/drm/i915/display/i9xx_plane.c b/drivers/gpu/drm/i915/display/i9xx_plane.c
new file mode 100644
index 000000000..5afbe3e98
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/i9xx_plane.c
@@ -0,0 +1,1056 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+#include <linux/kernel.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_blend.h>
+#include <drm/drm_fourcc.h>
+
+#include "intel_atomic.h"
+#include "intel_atomic_plane.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_fb.h"
+#include "intel_fbc.h"
+#include "intel_sprite.h"
+#include "i9xx_plane.h"
+
+/* Primary plane formats for gen <= 3 */
+static const u32 i8xx_primary_formats[] = {
+	DRM_FORMAT_C8,
+	DRM_FORMAT_XRGB1555,
+	DRM_FORMAT_RGB565,
+	DRM_FORMAT_XRGB8888,
+};
+
+/* Primary plane formats for ivb (no fp16 due to hw issue) */
+static const u32 ivb_primary_formats[] = {
+	DRM_FORMAT_C8,
+	DRM_FORMAT_RGB565,
+	DRM_FORMAT_XRGB8888,
+	DRM_FORMAT_XBGR8888,
+	DRM_FORMAT_XRGB2101010,
+	DRM_FORMAT_XBGR2101010,
+};
+
+/* Primary plane formats for gen >= 4, except ivb */
+static const u32 i965_primary_formats[] = {
+	DRM_FORMAT_C8,
+	DRM_FORMAT_RGB565,
+	DRM_FORMAT_XRGB8888,
+	DRM_FORMAT_XBGR8888,
+	DRM_FORMAT_XRGB2101010,
+	DRM_FORMAT_XBGR2101010,
+	DRM_FORMAT_XBGR16161616F,
+};
+
+/* Primary plane formats for vlv/chv */
+static const u32 vlv_primary_formats[] = {
+	DRM_FORMAT_C8,
+	DRM_FORMAT_RGB565,
+	DRM_FORMAT_XRGB8888,
+	DRM_FORMAT_XBGR8888,
+	DRM_FORMAT_ARGB8888,
+	DRM_FORMAT_ABGR8888,
+	DRM_FORMAT_XRGB2101010,
+	DRM_FORMAT_XBGR2101010,
+	DRM_FORMAT_ARGB2101010,
+	DRM_FORMAT_ABGR2101010,
+	DRM_FORMAT_XBGR16161616F,
+};
+
+static bool i8xx_plane_format_mod_supported(struct drm_plane *_plane,
+					    u32 format, u64 modifier)
+{
+	if (!intel_fb_plane_supports_modifier(to_intel_plane(_plane), modifier))
+		return false;
+
+	switch (format) {
+	case DRM_FORMAT_C8:
+	case DRM_FORMAT_RGB565:
+	case DRM_FORMAT_XRGB1555:
+	case DRM_FORMAT_XRGB8888:
+		return modifier == DRM_FORMAT_MOD_LINEAR ||
+			modifier == I915_FORMAT_MOD_X_TILED;
+	default:
+		return false;
+	}
+}
+
+static bool i965_plane_format_mod_supported(struct drm_plane *_plane,
+					    u32 format, u64 modifier)
+{
+	if (!intel_fb_plane_supports_modifier(to_intel_plane(_plane), modifier))
+		return false;
+
+	switch (format) {
+	case DRM_FORMAT_C8:
+	case DRM_FORMAT_RGB565:
+	case DRM_FORMAT_XRGB8888:
+	case DRM_FORMAT_XBGR8888:
+	case DRM_FORMAT_ARGB8888:
+	case DRM_FORMAT_ABGR8888:
+	case DRM_FORMAT_XRGB2101010:
+	case DRM_FORMAT_XBGR2101010:
+	case DRM_FORMAT_ARGB2101010:
+	case DRM_FORMAT_ABGR2101010:
+	case DRM_FORMAT_XBGR16161616F:
+		return modifier == DRM_FORMAT_MOD_LINEAR ||
+			modifier == I915_FORMAT_MOD_X_TILED;
+	default:
+		return false;
+	}
+}
+
+static bool i9xx_plane_has_fbc(struct drm_i915_private *dev_priv,
+			       enum i9xx_plane_id i9xx_plane)
+{
+	if (!HAS_FBC(dev_priv))
+		return false;
+
+	if (IS_BROADWELL(dev_priv) || IS_HASWELL(dev_priv))
+		return i9xx_plane == PLANE_A; /* tied to pipe A */
+	else if (IS_IVYBRIDGE(dev_priv))
+		return i9xx_plane == PLANE_A || i9xx_plane == PLANE_B ||
+			i9xx_plane == PLANE_C;
+	else if (DISPLAY_VER(dev_priv) >= 4)
+		return i9xx_plane == PLANE_A || i9xx_plane == PLANE_B;
+	else
+		return i9xx_plane == PLANE_A;
+}
+
+static struct intel_fbc *i9xx_plane_fbc(struct drm_i915_private *dev_priv,
+					enum i9xx_plane_id i9xx_plane)
+{
+	if (i9xx_plane_has_fbc(dev_priv, i9xx_plane))
+		return dev_priv->display.fbc[INTEL_FBC_A];
+	else
+		return NULL;
+}
+
+static bool i9xx_plane_has_windowing(struct intel_plane *plane)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum i9xx_plane_id i9xx_plane = plane->i9xx_plane;
+
+	if (IS_CHERRYVIEW(dev_priv))
+		return i9xx_plane == PLANE_B;
+	else if (DISPLAY_VER(dev_priv) >= 5 || IS_G4X(dev_priv))
+		return false;
+	else if (DISPLAY_VER(dev_priv) == 4)
+		return i9xx_plane == PLANE_C;
+	else
+		return i9xx_plane == PLANE_B ||
+			i9xx_plane == PLANE_C;
+}
+
+static u32 i9xx_plane_ctl(const struct intel_crtc_state *crtc_state,
+			  const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv =
+		to_i915(plane_state->uapi.plane->dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	unsigned int rotation = plane_state->hw.rotation;
+	u32 dspcntr;
+
+	dspcntr = DISP_ENABLE;
+
+	if (IS_G4X(dev_priv) || IS_IRONLAKE(dev_priv) ||
+	    IS_SANDYBRIDGE(dev_priv) || IS_IVYBRIDGE(dev_priv))
+		dspcntr |= DISP_TRICKLE_FEED_DISABLE;
+
+	switch (fb->format->format) {
+	case DRM_FORMAT_C8:
+		dspcntr |= DISP_FORMAT_8BPP;
+		break;
+	case DRM_FORMAT_XRGB1555:
+		dspcntr |= DISP_FORMAT_BGRX555;
+		break;
+	case DRM_FORMAT_ARGB1555:
+		dspcntr |= DISP_FORMAT_BGRA555;
+		break;
+	case DRM_FORMAT_RGB565:
+		dspcntr |= DISP_FORMAT_BGRX565;
+		break;
+	case DRM_FORMAT_XRGB8888:
+		dspcntr |= DISP_FORMAT_BGRX888;
+		break;
+	case DRM_FORMAT_XBGR8888:
+		dspcntr |= DISP_FORMAT_RGBX888;
+		break;
+	case DRM_FORMAT_ARGB8888:
+		dspcntr |= DISP_FORMAT_BGRA888;
+		break;
+	case DRM_FORMAT_ABGR8888:
+		dspcntr |= DISP_FORMAT_RGBA888;
+		break;
+	case DRM_FORMAT_XRGB2101010:
+		dspcntr |= DISP_FORMAT_BGRX101010;
+		break;
+	case DRM_FORMAT_XBGR2101010:
+		dspcntr |= DISP_FORMAT_RGBX101010;
+		break;
+	case DRM_FORMAT_ARGB2101010:
+		dspcntr |= DISP_FORMAT_BGRA101010;
+		break;
+	case DRM_FORMAT_ABGR2101010:
+		dspcntr |= DISP_FORMAT_RGBA101010;
+		break;
+	case DRM_FORMAT_XBGR16161616F:
+		dspcntr |= DISP_FORMAT_RGBX161616;
+		break;
+	default:
+		MISSING_CASE(fb->format->format);
+		return 0;
+	}
+
+	if (DISPLAY_VER(dev_priv) >= 4 &&
+	    fb->modifier == I915_FORMAT_MOD_X_TILED)
+		dspcntr |= DISP_TILED;
+
+	if (rotation & DRM_MODE_ROTATE_180)
+		dspcntr |= DISP_ROTATE_180;
+
+	if (rotation & DRM_MODE_REFLECT_X)
+		dspcntr |= DISP_MIRROR;
+
+	return dspcntr;
+}
+
+int i9xx_check_plane_surface(struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv =
+		to_i915(plane_state->uapi.plane->dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	int src_x, src_y, src_w;
+	u32 offset;
+	int ret;
+
+	ret = intel_plane_compute_gtt(plane_state);
+	if (ret)
+		return ret;
+
+	if (!plane_state->uapi.visible)
+		return 0;
+
+	src_w = drm_rect_width(&plane_state->uapi.src) >> 16;
+	src_x = plane_state->uapi.src.x1 >> 16;
+	src_y = plane_state->uapi.src.y1 >> 16;
+
+	/* Undocumented hardware limit on i965/g4x/vlv/chv */
+	if (HAS_GMCH(dev_priv) && fb->format->cpp[0] == 8 && src_w > 2048)
+		return -EINVAL;
+
+	intel_add_fb_offsets(&src_x, &src_y, plane_state, 0);
+
+	if (DISPLAY_VER(dev_priv) >= 4)
+		offset = intel_plane_compute_aligned_offset(&src_x, &src_y,
+							    plane_state, 0);
+	else
+		offset = 0;
+
+	/*
+	 * When using an X-tiled surface the plane starts to
+	 * misbehave if the x offset + width exceeds the stride.
+	 * hsw/bdw: underrun galore
+	 * ilk/snb/ivb: wrap to the next tile row mid scanout
+	 * i965/g4x: so far appear immune to this
+	 * vlv/chv: TODO check
+	 *
+	 * Linear surfaces seem to work just fine, even on hsw/bdw
+	 * despite them not using the linear offset anymore.
+	 */
+	if (DISPLAY_VER(dev_priv) >= 4 && fb->modifier == I915_FORMAT_MOD_X_TILED) {
+		u32 alignment = intel_surf_alignment(fb, 0);
+		int cpp = fb->format->cpp[0];
+
+		while ((src_x + src_w) * cpp > plane_state->view.color_plane[0].mapping_stride) {
+			if (offset == 0) {
+				drm_dbg_kms(&dev_priv->drm,
+					    "Unable to find suitable display surface offset due to X-tiling\n");
+				return -EINVAL;
+			}
+
+			offset = intel_plane_adjust_aligned_offset(&src_x, &src_y, plane_state, 0,
+								   offset, offset - alignment);
+		}
+	}
+
+	/*
+	 * Put the final coordinates back so that the src
+	 * coordinate checks will see the right values.
+	 */
+	drm_rect_translate_to(&plane_state->uapi.src,
+			      src_x << 16, src_y << 16);
+
+	/* HSW/BDW do this automagically in hardware */
+	if (!IS_HASWELL(dev_priv) && !IS_BROADWELL(dev_priv)) {
+		unsigned int rotation = plane_state->hw.rotation;
+		int src_w = drm_rect_width(&plane_state->uapi.src) >> 16;
+		int src_h = drm_rect_height(&plane_state->uapi.src) >> 16;
+
+		if (rotation & DRM_MODE_ROTATE_180) {
+			src_x += src_w - 1;
+			src_y += src_h - 1;
+		} else if (rotation & DRM_MODE_REFLECT_X) {
+			src_x += src_w - 1;
+		}
+	}
+
+	if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
+		drm_WARN_ON(&dev_priv->drm, src_x > 8191 || src_y > 4095);
+	} else if (DISPLAY_VER(dev_priv) >= 4 &&
+		   fb->modifier == I915_FORMAT_MOD_X_TILED) {
+		drm_WARN_ON(&dev_priv->drm, src_x > 4095 || src_y > 4095);
+	}
+
+	plane_state->view.color_plane[0].offset = offset;
+	plane_state->view.color_plane[0].x = src_x;
+	plane_state->view.color_plane[0].y = src_y;
+
+	return 0;
+}
+
+static int
+i9xx_plane_check(struct intel_crtc_state *crtc_state,
+		 struct intel_plane_state *plane_state)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	int ret;
+
+	ret = chv_plane_check_rotation(plane_state);
+	if (ret)
+		return ret;
+
+	ret = intel_atomic_plane_check_clipping(plane_state, crtc_state,
+						DRM_PLANE_NO_SCALING,
+						DRM_PLANE_NO_SCALING,
+						i9xx_plane_has_windowing(plane));
+	if (ret)
+		return ret;
+
+	ret = i9xx_check_plane_surface(plane_state);
+	if (ret)
+		return ret;
+
+	if (!plane_state->uapi.visible)
+		return 0;
+
+	ret = intel_plane_check_src_coordinates(plane_state);
+	if (ret)
+		return ret;
+
+	plane_state->ctl = i9xx_plane_ctl(crtc_state, plane_state);
+
+	return 0;
+}
+
+static u32 i9xx_plane_ctl_crtc(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	u32 dspcntr = 0;
+
+	if (crtc_state->gamma_enable)
+		dspcntr |= DISP_PIPE_GAMMA_ENABLE;
+
+	if (crtc_state->csc_enable)
+		dspcntr |= DISP_PIPE_CSC_ENABLE;
+
+	if (DISPLAY_VER(dev_priv) < 5)
+		dspcntr |= DISP_PIPE_SEL(crtc->pipe);
+
+	return dspcntr;
+}
+
+static void i9xx_plane_ratio(const struct intel_crtc_state *crtc_state,
+			     const struct intel_plane_state *plane_state,
+			     unsigned int *num, unsigned int *den)
+{
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	unsigned int cpp = fb->format->cpp[0];
+
+	/*
+	 * g4x bspec says 64bpp pixel rate can't exceed 80%
+	 * of cdclk when the sprite plane is enabled on the
+	 * same pipe. ilk/snb bspec says 64bpp pixel rate is
+	 * never allowed to exceed 80% of cdclk. Let's just go
+	 * with the ilk/snb limit always.
+	 */
+	if (cpp == 8) {
+		*num = 10;
+		*den = 8;
+	} else {
+		*num = 1;
+		*den = 1;
+	}
+}
+
+static int i9xx_plane_min_cdclk(const struct intel_crtc_state *crtc_state,
+				const struct intel_plane_state *plane_state)
+{
+	unsigned int pixel_rate;
+	unsigned int num, den;
+
+	/*
+	 * Note that crtc_state->pixel_rate accounts for both
+	 * horizontal and vertical panel fitter downscaling factors.
+	 * Pre-HSW bspec tells us to only consider the horizontal
+	 * downscaling factor here. We ignore that and just consider
+	 * both for simplicity.
+	 */
+	pixel_rate = crtc_state->pixel_rate;
+
+	i9xx_plane_ratio(crtc_state, plane_state, &num, &den);
+
+	/* two pixels per clock with double wide pipe */
+	if (crtc_state->double_wide)
+		den *= 2;
+
+	return DIV_ROUND_UP(pixel_rate * num, den);
+}
+
+static void i9xx_plane_update_noarm(struct intel_plane *plane,
+				    const struct intel_crtc_state *crtc_state,
+				    const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum i9xx_plane_id i9xx_plane = plane->i9xx_plane;
+
+	intel_de_write_fw(dev_priv, DSPSTRIDE(i9xx_plane),
+			  plane_state->view.color_plane[0].mapping_stride);
+
+	if (DISPLAY_VER(dev_priv) < 4) {
+		int crtc_x = plane_state->uapi.dst.x1;
+		int crtc_y = plane_state->uapi.dst.y1;
+		int crtc_w = drm_rect_width(&plane_state->uapi.dst);
+		int crtc_h = drm_rect_height(&plane_state->uapi.dst);
+
+		/*
+		 * PLANE_A doesn't actually have a full window
+		 * generator but let's assume we still need to
+		 * program whatever is there.
+		 */
+		intel_de_write_fw(dev_priv, DSPPOS(i9xx_plane),
+				  DISP_POS_Y(crtc_y) | DISP_POS_X(crtc_x));
+		intel_de_write_fw(dev_priv, DSPSIZE(i9xx_plane),
+				  DISP_HEIGHT(crtc_h - 1) | DISP_WIDTH(crtc_w - 1));
+	}
+}
+
+static void i9xx_plane_update_arm(struct intel_plane *plane,
+				  const struct intel_crtc_state *crtc_state,
+				  const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum i9xx_plane_id i9xx_plane = plane->i9xx_plane;
+	int x = plane_state->view.color_plane[0].x;
+	int y = plane_state->view.color_plane[0].y;
+	u32 dspcntr, dspaddr_offset, linear_offset;
+
+	dspcntr = plane_state->ctl | i9xx_plane_ctl_crtc(crtc_state);
+
+	linear_offset = intel_fb_xy_to_linear(x, y, plane_state, 0);
+
+	if (DISPLAY_VER(dev_priv) >= 4)
+		dspaddr_offset = plane_state->view.color_plane[0].offset;
+	else
+		dspaddr_offset = linear_offset;
+
+	if (IS_CHERRYVIEW(dev_priv) && i9xx_plane == PLANE_B) {
+		int crtc_x = plane_state->uapi.dst.x1;
+		int crtc_y = plane_state->uapi.dst.y1;
+		int crtc_w = drm_rect_width(&plane_state->uapi.dst);
+		int crtc_h = drm_rect_height(&plane_state->uapi.dst);
+
+		intel_de_write_fw(dev_priv, PRIMPOS(i9xx_plane),
+				  PRIM_POS_Y(crtc_y) | PRIM_POS_X(crtc_x));
+		intel_de_write_fw(dev_priv, PRIMSIZE(i9xx_plane),
+				  PRIM_HEIGHT(crtc_h - 1) | PRIM_WIDTH(crtc_w - 1));
+		intel_de_write_fw(dev_priv, PRIMCNSTALPHA(i9xx_plane), 0);
+	}
+
+	if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
+		intel_de_write_fw(dev_priv, DSPOFFSET(i9xx_plane),
+				  DISP_OFFSET_Y(y) | DISP_OFFSET_X(x));
+	} else if (DISPLAY_VER(dev_priv) >= 4) {
+		intel_de_write_fw(dev_priv, DSPLINOFF(i9xx_plane),
+				  linear_offset);
+		intel_de_write_fw(dev_priv, DSPTILEOFF(i9xx_plane),
+				  DISP_OFFSET_Y(y) | DISP_OFFSET_X(x));
+	}
+
+	/*
+	 * The control register self-arms if the plane was previously
+	 * disabled. Try to make the plane enable atomic by writing
+	 * the control register just before the surface register.
+	 */
+	intel_de_write_fw(dev_priv, DSPCNTR(i9xx_plane), dspcntr);
+
+	if (DISPLAY_VER(dev_priv) >= 4)
+		intel_de_write_fw(dev_priv, DSPSURF(i9xx_plane),
+				  intel_plane_ggtt_offset(plane_state) + dspaddr_offset);
+	else
+		intel_de_write_fw(dev_priv, DSPADDR(i9xx_plane),
+				  intel_plane_ggtt_offset(plane_state) + dspaddr_offset);
+}
+
+static void i830_plane_update_arm(struct intel_plane *plane,
+				  const struct intel_crtc_state *crtc_state,
+				  const struct intel_plane_state *plane_state)
+{
+	/*
+	 * On i830/i845 all registers are self-arming [ALM040].
+	 *
+	 * Additional breakage on i830 causes register reads to return
+	 * the last latched value instead of the last written value [ALM026].
+	 */
+	i9xx_plane_update_noarm(plane, crtc_state, plane_state);
+	i9xx_plane_update_arm(plane, crtc_state, plane_state);
+}
+
+static void i9xx_plane_disable_arm(struct intel_plane *plane,
+				   const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum i9xx_plane_id i9xx_plane = plane->i9xx_plane;
+	u32 dspcntr;
+
+	/*
+	 * DSPCNTR pipe gamma enable on g4x+ and pipe csc
+	 * enable on ilk+ affect the pipe bottom color as
+	 * well, so we must configure them even if the plane
+	 * is disabled.
+	 *
+	 * On pre-g4x there is no way to gamma correct the
+	 * pipe bottom color but we'll keep on doing this
+	 * anyway so that the crtc state readout works correctly.
+	 */
+	dspcntr = i9xx_plane_ctl_crtc(crtc_state);
+
+	intel_de_write_fw(dev_priv, DSPCNTR(i9xx_plane), dspcntr);
+
+	if (DISPLAY_VER(dev_priv) >= 4)
+		intel_de_write_fw(dev_priv, DSPSURF(i9xx_plane), 0);
+	else
+		intel_de_write_fw(dev_priv, DSPADDR(i9xx_plane), 0);
+}
+
+static void
+g4x_primary_async_flip(struct intel_plane *plane,
+		       const struct intel_crtc_state *crtc_state,
+		       const struct intel_plane_state *plane_state,
+		       bool async_flip)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	u32 dspcntr = plane_state->ctl | i9xx_plane_ctl_crtc(crtc_state);
+	u32 dspaddr_offset = plane_state->view.color_plane[0].offset;
+	enum i9xx_plane_id i9xx_plane = plane->i9xx_plane;
+
+	if (async_flip)
+		dspcntr |= DISP_ASYNC_FLIP;
+
+	intel_de_write_fw(dev_priv, DSPCNTR(i9xx_plane), dspcntr);
+
+	intel_de_write_fw(dev_priv, DSPSURF(i9xx_plane),
+			  intel_plane_ggtt_offset(plane_state) + dspaddr_offset);
+}
+
+static void
+vlv_primary_async_flip(struct intel_plane *plane,
+		       const struct intel_crtc_state *crtc_state,
+		       const struct intel_plane_state *plane_state,
+		       bool async_flip)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	u32 dspaddr_offset = plane_state->view.color_plane[0].offset;
+	enum i9xx_plane_id i9xx_plane = plane->i9xx_plane;
+
+	intel_de_write_fw(dev_priv, DSPADDR_VLV(i9xx_plane),
+			  intel_plane_ggtt_offset(plane_state) + dspaddr_offset);
+}
+
+static void
+bdw_primary_enable_flip_done(struct intel_plane *plane)
+{
+	struct drm_i915_private *i915 = to_i915(plane->base.dev);
+	enum pipe pipe = plane->pipe;
+
+	spin_lock_irq(&i915->irq_lock);
+	bdw_enable_pipe_irq(i915, pipe, GEN8_PIPE_PRIMARY_FLIP_DONE);
+	spin_unlock_irq(&i915->irq_lock);
+}
+
+static void
+bdw_primary_disable_flip_done(struct intel_plane *plane)
+{
+	struct drm_i915_private *i915 = to_i915(plane->base.dev);
+	enum pipe pipe = plane->pipe;
+
+	spin_lock_irq(&i915->irq_lock);
+	bdw_disable_pipe_irq(i915, pipe, GEN8_PIPE_PRIMARY_FLIP_DONE);
+	spin_unlock_irq(&i915->irq_lock);
+}
+
+static void
+ivb_primary_enable_flip_done(struct intel_plane *plane)
+{
+	struct drm_i915_private *i915 = to_i915(plane->base.dev);
+
+	spin_lock_irq(&i915->irq_lock);
+	ilk_enable_display_irq(i915, DE_PLANE_FLIP_DONE_IVB(plane->i9xx_plane));
+	spin_unlock_irq(&i915->irq_lock);
+}
+
+static void
+ivb_primary_disable_flip_done(struct intel_plane *plane)
+{
+	struct drm_i915_private *i915 = to_i915(plane->base.dev);
+
+	spin_lock_irq(&i915->irq_lock);
+	ilk_disable_display_irq(i915, DE_PLANE_FLIP_DONE_IVB(plane->i9xx_plane));
+	spin_unlock_irq(&i915->irq_lock);
+}
+
+static void
+ilk_primary_enable_flip_done(struct intel_plane *plane)
+{
+	struct drm_i915_private *i915 = to_i915(plane->base.dev);
+
+	spin_lock_irq(&i915->irq_lock);
+	ilk_enable_display_irq(i915, DE_PLANE_FLIP_DONE(plane->i9xx_plane));
+	spin_unlock_irq(&i915->irq_lock);
+}
+
+static void
+ilk_primary_disable_flip_done(struct intel_plane *plane)
+{
+	struct drm_i915_private *i915 = to_i915(plane->base.dev);
+
+	spin_lock_irq(&i915->irq_lock);
+	ilk_disable_display_irq(i915, DE_PLANE_FLIP_DONE(plane->i9xx_plane));
+	spin_unlock_irq(&i915->irq_lock);
+}
+
+static void
+vlv_primary_enable_flip_done(struct intel_plane *plane)
+{
+	struct drm_i915_private *i915 = to_i915(plane->base.dev);
+	enum pipe pipe = plane->pipe;
+
+	spin_lock_irq(&i915->irq_lock);
+	i915_enable_pipestat(i915, pipe, PLANE_FLIP_DONE_INT_STATUS_VLV);
+	spin_unlock_irq(&i915->irq_lock);
+}
+
+static void
+vlv_primary_disable_flip_done(struct intel_plane *plane)
+{
+	struct drm_i915_private *i915 = to_i915(plane->base.dev);
+	enum pipe pipe = plane->pipe;
+
+	spin_lock_irq(&i915->irq_lock);
+	i915_disable_pipestat(i915, pipe, PLANE_FLIP_DONE_INT_STATUS_VLV);
+	spin_unlock_irq(&i915->irq_lock);
+}
+
+static bool i9xx_plane_get_hw_state(struct intel_plane *plane,
+				    enum pipe *pipe)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum intel_display_power_domain power_domain;
+	enum i9xx_plane_id i9xx_plane = plane->i9xx_plane;
+	intel_wakeref_t wakeref;
+	bool ret;
+	u32 val;
+
+	/*
+	 * Not 100% correct for planes that can move between pipes,
+	 * but that's only the case for gen2-4 which don't have any
+	 * display power wells.
+	 */
+	power_domain = POWER_DOMAIN_PIPE(plane->pipe);
+	wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
+	if (!wakeref)
+		return false;
+
+	val = intel_de_read(dev_priv, DSPCNTR(i9xx_plane));
+
+	ret = val & DISP_ENABLE;
+
+	if (DISPLAY_VER(dev_priv) >= 5)
+		*pipe = plane->pipe;
+	else
+		*pipe = REG_FIELD_GET(DISP_PIPE_SEL_MASK, val);
+
+	intel_display_power_put(dev_priv, power_domain, wakeref);
+
+	return ret;
+}
+
+static unsigned int
+hsw_primary_max_stride(struct intel_plane *plane,
+		       u32 pixel_format, u64 modifier,
+		       unsigned int rotation)
+{
+	const struct drm_format_info *info = drm_format_info(pixel_format);
+	int cpp = info->cpp[0];
+
+	/* Limit to 8k pixels to guarantee OFFSET.x doesn't get too big. */
+	return min(8192 * cpp, 32 * 1024);
+}
+
+static unsigned int
+ilk_primary_max_stride(struct intel_plane *plane,
+		       u32 pixel_format, u64 modifier,
+		       unsigned int rotation)
+{
+	const struct drm_format_info *info = drm_format_info(pixel_format);
+	int cpp = info->cpp[0];
+
+	/* Limit to 4k pixels to guarantee TILEOFF.x doesn't get too big. */
+	if (modifier == I915_FORMAT_MOD_X_TILED)
+		return min(4096 * cpp, 32 * 1024);
+	else
+		return 32 * 1024;
+}
+
+unsigned int
+i965_plane_max_stride(struct intel_plane *plane,
+		      u32 pixel_format, u64 modifier,
+		      unsigned int rotation)
+{
+	const struct drm_format_info *info = drm_format_info(pixel_format);
+	int cpp = info->cpp[0];
+
+	/* Limit to 4k pixels to guarantee TILEOFF.x doesn't get too big. */
+	if (modifier == I915_FORMAT_MOD_X_TILED)
+		return min(4096 * cpp, 16 * 1024);
+	else
+		return 32 * 1024;
+}
+
+static unsigned int
+i9xx_plane_max_stride(struct intel_plane *plane,
+		      u32 pixel_format, u64 modifier,
+		      unsigned int rotation)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+
+	if (DISPLAY_VER(dev_priv) >= 3) {
+		if (modifier == I915_FORMAT_MOD_X_TILED)
+			return 8*1024;
+		else
+			return 16*1024;
+	} else {
+		if (plane->i9xx_plane == PLANE_C)
+			return 4*1024;
+		else
+			return 8*1024;
+	}
+}
+
+static const struct drm_plane_funcs i965_plane_funcs = {
+	.update_plane = drm_atomic_helper_update_plane,
+	.disable_plane = drm_atomic_helper_disable_plane,
+	.destroy = intel_plane_destroy,
+	.atomic_duplicate_state = intel_plane_duplicate_state,
+	.atomic_destroy_state = intel_plane_destroy_state,
+	.format_mod_supported = i965_plane_format_mod_supported,
+};
+
+static const struct drm_plane_funcs i8xx_plane_funcs = {
+	.update_plane = drm_atomic_helper_update_plane,
+	.disable_plane = drm_atomic_helper_disable_plane,
+	.destroy = intel_plane_destroy,
+	.atomic_duplicate_state = intel_plane_duplicate_state,
+	.atomic_destroy_state = intel_plane_destroy_state,
+	.format_mod_supported = i8xx_plane_format_mod_supported,
+};
+
+struct intel_plane *
+intel_primary_plane_create(struct drm_i915_private *dev_priv, enum pipe pipe)
+{
+	struct intel_plane *plane;
+	const struct drm_plane_funcs *plane_funcs;
+	unsigned int supported_rotations;
+	const u64 *modifiers;
+	const u32 *formats;
+	int num_formats;
+	int ret, zpos;
+
+	plane = intel_plane_alloc();
+	if (IS_ERR(plane))
+		return plane;
+
+	plane->pipe = pipe;
+	/*
+	 * On gen2/3 only plane A can do FBC, but the panel fitter and LVDS
+	 * port is hooked to pipe B. Hence we want plane A feeding pipe B.
+	 */
+	if (HAS_FBC(dev_priv) && DISPLAY_VER(dev_priv) < 4 &&
+	    INTEL_NUM_PIPES(dev_priv) == 2)
+		plane->i9xx_plane = (enum i9xx_plane_id) !pipe;
+	else
+		plane->i9xx_plane = (enum i9xx_plane_id) pipe;
+	plane->id = PLANE_PRIMARY;
+	plane->frontbuffer_bit = INTEL_FRONTBUFFER(pipe, plane->id);
+
+	intel_fbc_add_plane(i9xx_plane_fbc(dev_priv, plane->i9xx_plane), plane);
+
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+		formats = vlv_primary_formats;
+		num_formats = ARRAY_SIZE(vlv_primary_formats);
+	} else if (DISPLAY_VER(dev_priv) >= 4) {
+		/*
+		 * WaFP16GammaEnabling:ivb
+		 * "Workaround : When using the 64-bit format, the plane
+		 *  output on each color channel has one quarter amplitude.
+		 *  It can be brought up to full amplitude by using pipe
+		 *  gamma correction or pipe color space conversion to
+		 *  multiply the plane output by four."
+		 *
+		 * There is no dedicated plane gamma for the primary plane,
+		 * and using the pipe gamma/csc could conflict with other
+		 * planes, so we choose not to expose fp16 on IVB primary
+		 * planes. HSW primary planes no longer have this problem.
+		 */
+		if (IS_IVYBRIDGE(dev_priv)) {
+			formats = ivb_primary_formats;
+			num_formats = ARRAY_SIZE(ivb_primary_formats);
+		} else {
+			formats = i965_primary_formats;
+			num_formats = ARRAY_SIZE(i965_primary_formats);
+		}
+	} else {
+		formats = i8xx_primary_formats;
+		num_formats = ARRAY_SIZE(i8xx_primary_formats);
+	}
+
+	if (DISPLAY_VER(dev_priv) >= 4)
+		plane_funcs = &i965_plane_funcs;
+	else
+		plane_funcs = &i8xx_plane_funcs;
+
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
+		plane->min_cdclk = vlv_plane_min_cdclk;
+	else if (IS_BROADWELL(dev_priv) || IS_HASWELL(dev_priv))
+		plane->min_cdclk = hsw_plane_min_cdclk;
+	else if (IS_IVYBRIDGE(dev_priv))
+		plane->min_cdclk = ivb_plane_min_cdclk;
+	else
+		plane->min_cdclk = i9xx_plane_min_cdclk;
+
+	if (HAS_GMCH(dev_priv)) {
+		if (DISPLAY_VER(dev_priv) >= 4)
+			plane->max_stride = i965_plane_max_stride;
+		else
+			plane->max_stride = i9xx_plane_max_stride;
+	} else {
+		if (IS_BROADWELL(dev_priv) || IS_HASWELL(dev_priv))
+			plane->max_stride = hsw_primary_max_stride;
+		else
+			plane->max_stride = ilk_primary_max_stride;
+	}
+
+	if (IS_I830(dev_priv) || IS_I845G(dev_priv)) {
+		plane->update_arm = i830_plane_update_arm;
+	} else {
+		plane->update_noarm = i9xx_plane_update_noarm;
+		plane->update_arm = i9xx_plane_update_arm;
+	}
+	plane->disable_arm = i9xx_plane_disable_arm;
+	plane->get_hw_state = i9xx_plane_get_hw_state;
+	plane->check_plane = i9xx_plane_check;
+
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+		plane->async_flip = vlv_primary_async_flip;
+		plane->enable_flip_done = vlv_primary_enable_flip_done;
+		plane->disable_flip_done = vlv_primary_disable_flip_done;
+	} else if (IS_BROADWELL(dev_priv)) {
+		plane->need_async_flip_disable_wa = true;
+		plane->async_flip = g4x_primary_async_flip;
+		plane->enable_flip_done = bdw_primary_enable_flip_done;
+		plane->disable_flip_done = bdw_primary_disable_flip_done;
+	} else if (DISPLAY_VER(dev_priv) >= 7) {
+		plane->async_flip = g4x_primary_async_flip;
+		plane->enable_flip_done = ivb_primary_enable_flip_done;
+		plane->disable_flip_done = ivb_primary_disable_flip_done;
+	} else if (DISPLAY_VER(dev_priv) >= 5) {
+		plane->async_flip = g4x_primary_async_flip;
+		plane->enable_flip_done = ilk_primary_enable_flip_done;
+		plane->disable_flip_done = ilk_primary_disable_flip_done;
+	}
+
+	modifiers = intel_fb_plane_get_modifiers(dev_priv, INTEL_PLANE_CAP_TILING_X);
+
+	if (DISPLAY_VER(dev_priv) >= 5 || IS_G4X(dev_priv))
+		ret = drm_universal_plane_init(&dev_priv->drm, &plane->base,
+					       0, plane_funcs,
+					       formats, num_formats,
+					       modifiers,
+					       DRM_PLANE_TYPE_PRIMARY,
+					       "primary %c", pipe_name(pipe));
+	else
+		ret = drm_universal_plane_init(&dev_priv->drm, &plane->base,
+					       0, plane_funcs,
+					       formats, num_formats,
+					       modifiers,
+					       DRM_PLANE_TYPE_PRIMARY,
+					       "plane %c",
+					       plane_name(plane->i9xx_plane));
+
+	kfree(modifiers);
+
+	if (ret)
+		goto fail;
+
+	if (IS_CHERRYVIEW(dev_priv) && pipe == PIPE_B) {
+		supported_rotations =
+			DRM_MODE_ROTATE_0 | DRM_MODE_ROTATE_180 |
+			DRM_MODE_REFLECT_X;
+	} else if (DISPLAY_VER(dev_priv) >= 4) {
+		supported_rotations =
+			DRM_MODE_ROTATE_0 | DRM_MODE_ROTATE_180;
+	} else {
+		supported_rotations = DRM_MODE_ROTATE_0;
+	}
+
+	if (DISPLAY_VER(dev_priv) >= 4)
+		drm_plane_create_rotation_property(&plane->base,
+						   DRM_MODE_ROTATE_0,
+						   supported_rotations);
+
+	zpos = 0;
+	drm_plane_create_zpos_immutable_property(&plane->base, zpos);
+
+	intel_plane_helper_add(plane);
+
+	return plane;
+
+fail:
+	intel_plane_free(plane);
+
+	return ERR_PTR(ret);
+}
+
+static int i9xx_format_to_fourcc(int format)
+{
+	switch (format) {
+	case DISP_FORMAT_8BPP:
+		return DRM_FORMAT_C8;
+	case DISP_FORMAT_BGRA555:
+		return DRM_FORMAT_ARGB1555;
+	case DISP_FORMAT_BGRX555:
+		return DRM_FORMAT_XRGB1555;
+	case DISP_FORMAT_BGRX565:
+		return DRM_FORMAT_RGB565;
+	default:
+	case DISP_FORMAT_BGRX888:
+		return DRM_FORMAT_XRGB8888;
+	case DISP_FORMAT_RGBX888:
+		return DRM_FORMAT_XBGR8888;
+	case DISP_FORMAT_BGRA888:
+		return DRM_FORMAT_ARGB8888;
+	case DISP_FORMAT_RGBA888:
+		return DRM_FORMAT_ABGR8888;
+	case DISP_FORMAT_BGRX101010:
+		return DRM_FORMAT_XRGB2101010;
+	case DISP_FORMAT_RGBX101010:
+		return DRM_FORMAT_XBGR2101010;
+	case DISP_FORMAT_BGRA101010:
+		return DRM_FORMAT_ARGB2101010;
+	case DISP_FORMAT_RGBA101010:
+		return DRM_FORMAT_ABGR2101010;
+	case DISP_FORMAT_RGBX161616:
+		return DRM_FORMAT_XBGR16161616F;
+	}
+}
+
+void
+i9xx_get_initial_plane_config(struct intel_crtc *crtc,
+			      struct intel_initial_plane_config *plane_config)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_plane *plane = to_intel_plane(crtc->base.primary);
+	enum i9xx_plane_id i9xx_plane = plane->i9xx_plane;
+	enum pipe pipe;
+	u32 val, base, offset;
+	int fourcc, pixel_format;
+	unsigned int aligned_height;
+	struct drm_framebuffer *fb;
+	struct intel_framebuffer *intel_fb;
+
+	if (!plane->get_hw_state(plane, &pipe))
+		return;
+
+	drm_WARN_ON(dev, pipe != crtc->pipe);
+
+	intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
+	if (!intel_fb) {
+		drm_dbg_kms(&dev_priv->drm, "failed to alloc fb\n");
+		return;
+	}
+
+	fb = &intel_fb->base;
+
+	fb->dev = dev;
+
+	val = intel_de_read(dev_priv, DSPCNTR(i9xx_plane));
+
+	if (DISPLAY_VER(dev_priv) >= 4) {
+		if (val & DISP_TILED) {
+			plane_config->tiling = I915_TILING_X;
+			fb->modifier = I915_FORMAT_MOD_X_TILED;
+		}
+
+		if (val & DISP_ROTATE_180)
+			plane_config->rotation = DRM_MODE_ROTATE_180;
+	}
+
+	if (IS_CHERRYVIEW(dev_priv) && pipe == PIPE_B &&
+	    val & DISP_MIRROR)
+		plane_config->rotation |= DRM_MODE_REFLECT_X;
+
+	pixel_format = val & DISP_FORMAT_MASK;
+	fourcc = i9xx_format_to_fourcc(pixel_format);
+	fb->format = drm_format_info(fourcc);
+
+	if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
+		offset = intel_de_read(dev_priv, DSPOFFSET(i9xx_plane));
+		base = intel_de_read(dev_priv, DSPSURF(i9xx_plane)) & DISP_ADDR_MASK;
+	} else if (DISPLAY_VER(dev_priv) >= 4) {
+		if (plane_config->tiling)
+			offset = intel_de_read(dev_priv,
+					       DSPTILEOFF(i9xx_plane));
+		else
+			offset = intel_de_read(dev_priv,
+					       DSPLINOFF(i9xx_plane));
+		base = intel_de_read(dev_priv, DSPSURF(i9xx_plane)) & DISP_ADDR_MASK;
+	} else {
+		base = intel_de_read(dev_priv, DSPADDR(i9xx_plane));
+	}
+	plane_config->base = base;
+
+	val = intel_de_read(dev_priv, PIPESRC(pipe));
+	fb->width = REG_FIELD_GET(PIPESRC_WIDTH_MASK, val) + 1;
+	fb->height = REG_FIELD_GET(PIPESRC_HEIGHT_MASK, val) + 1;
+
+	val = intel_de_read(dev_priv, DSPSTRIDE(i9xx_plane));
+	fb->pitches[0] = val & 0xffffffc0;
+
+	aligned_height = intel_fb_align_height(fb, 0, fb->height);
+
+	plane_config->size = fb->pitches[0] * aligned_height;
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "%s/%s with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n",
+		    crtc->base.name, plane->base.name, fb->width, fb->height,
+		    fb->format->cpp[0] * 8, base, fb->pitches[0],
+		    plane_config->size);
+
+	plane_config->fb = intel_fb;
+}
diff --git a/drivers/gpu/drm/i915/display/i9xx_plane.h b/drivers/gpu/drm/i915/display/i9xx_plane.h
new file mode 100644
index 000000000..027b66053
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/i9xx_plane.h
@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#ifndef _I9XX_PLANE_H_
+#define _I9XX_PLANE_H_
+
+#include <linux/types.h>
+
+enum pipe;
+struct drm_i915_private;
+struct intel_crtc;
+struct intel_initial_plane_config;
+struct intel_plane;
+struct intel_plane_state;
+
+unsigned int i965_plane_max_stride(struct intel_plane *plane,
+				   u32 pixel_format, u64 modifier,
+				   unsigned int rotation);
+int i9xx_check_plane_surface(struct intel_plane_state *plane_state);
+
+struct intel_plane *
+intel_primary_plane_create(struct drm_i915_private *dev_priv, enum pipe pipe);
+
+void i9xx_get_initial_plane_config(struct intel_crtc *crtc,
+				   struct intel_initial_plane_config *plane_config);
+#endif
diff --git a/drivers/gpu/drm/i915/display/icl_dsi.c b/drivers/gpu/drm/i915/display/icl_dsi.c
new file mode 100644
index 000000000..f7422f0cf
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/icl_dsi.c
@@ -0,0 +1,2127 @@
+/*
+ * Copyright © 2018 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *   Madhav Chauhan <madhav.chauhan@intel.com>
+ *   Jani Nikula <jani.nikula@intel.com>
+ */
+
+#include <drm/display/drm_dsc_helper.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_mipi_dsi.h>
+
+#include "icl_dsi.h"
+#include "icl_dsi_regs.h"
+#include "intel_atomic.h"
+#include "intel_backlight.h"
+#include "intel_backlight_regs.h"
+#include "intel_combo_phy.h"
+#include "intel_combo_phy_regs.h"
+#include "intel_connector.h"
+#include "intel_crtc.h"
+#include "intel_ddi.h"
+#include "intel_de.h"
+#include "intel_dsi.h"
+#include "intel_dsi_vbt.h"
+#include "intel_panel.h"
+#include "intel_vdsc.h"
+#include "skl_scaler.h"
+#include "skl_universal_plane.h"
+
+static int header_credits_available(struct drm_i915_private *dev_priv,
+				    enum transcoder dsi_trans)
+{
+	return (intel_de_read(dev_priv, DSI_CMD_TXCTL(dsi_trans)) & FREE_HEADER_CREDIT_MASK)
+		>> FREE_HEADER_CREDIT_SHIFT;
+}
+
+static int payload_credits_available(struct drm_i915_private *dev_priv,
+				     enum transcoder dsi_trans)
+{
+	return (intel_de_read(dev_priv, DSI_CMD_TXCTL(dsi_trans)) & FREE_PLOAD_CREDIT_MASK)
+		>> FREE_PLOAD_CREDIT_SHIFT;
+}
+
+static bool wait_for_header_credits(struct drm_i915_private *dev_priv,
+				    enum transcoder dsi_trans, int hdr_credit)
+{
+	if (wait_for_us(header_credits_available(dev_priv, dsi_trans) >=
+			hdr_credit, 100)) {
+		drm_err(&dev_priv->drm, "DSI header credits not released\n");
+		return false;
+	}
+
+	return true;
+}
+
+static bool wait_for_payload_credits(struct drm_i915_private *dev_priv,
+				     enum transcoder dsi_trans, int payld_credit)
+{
+	if (wait_for_us(payload_credits_available(dev_priv, dsi_trans) >=
+			payld_credit, 100)) {
+		drm_err(&dev_priv->drm, "DSI payload credits not released\n");
+		return false;
+	}
+
+	return true;
+}
+
+static enum transcoder dsi_port_to_transcoder(enum port port)
+{
+	if (port == PORT_A)
+		return TRANSCODER_DSI_0;
+	else
+		return TRANSCODER_DSI_1;
+}
+
+static void wait_for_cmds_dispatched_to_panel(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	struct mipi_dsi_device *dsi;
+	enum port port;
+	enum transcoder dsi_trans;
+	int ret;
+
+	/* wait for header/payload credits to be released */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		dsi_trans = dsi_port_to_transcoder(port);
+		wait_for_header_credits(dev_priv, dsi_trans, MAX_HEADER_CREDIT);
+		wait_for_payload_credits(dev_priv, dsi_trans, MAX_PLOAD_CREDIT);
+	}
+
+	/* send nop DCS command */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		dsi = intel_dsi->dsi_hosts[port]->device;
+		dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+		dsi->channel = 0;
+		ret = mipi_dsi_dcs_nop(dsi);
+		if (ret < 0)
+			drm_err(&dev_priv->drm,
+				"error sending DCS NOP command\n");
+	}
+
+	/* wait for header credits to be released */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		dsi_trans = dsi_port_to_transcoder(port);
+		wait_for_header_credits(dev_priv, dsi_trans, MAX_HEADER_CREDIT);
+	}
+
+	/* wait for LP TX in progress bit to be cleared */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		dsi_trans = dsi_port_to_transcoder(port);
+		if (wait_for_us(!(intel_de_read(dev_priv, DSI_LP_MSG(dsi_trans)) &
+				  LPTX_IN_PROGRESS), 20))
+			drm_err(&dev_priv->drm, "LPTX bit not cleared\n");
+	}
+}
+
+static int dsi_send_pkt_payld(struct intel_dsi_host *host,
+			      const struct mipi_dsi_packet *packet)
+{
+	struct intel_dsi *intel_dsi = host->intel_dsi;
+	struct drm_i915_private *i915 = to_i915(intel_dsi->base.base.dev);
+	enum transcoder dsi_trans = dsi_port_to_transcoder(host->port);
+	const u8 *data = packet->payload;
+	u32 len = packet->payload_length;
+	int i, j;
+
+	/* payload queue can accept *256 bytes*, check limit */
+	if (len > MAX_PLOAD_CREDIT * 4) {
+		drm_err(&i915->drm, "payload size exceeds max queue limit\n");
+		return -EINVAL;
+	}
+
+	for (i = 0; i < len; i += 4) {
+		u32 tmp = 0;
+
+		if (!wait_for_payload_credits(i915, dsi_trans, 1))
+			return -EBUSY;
+
+		for (j = 0; j < min_t(u32, len - i, 4); j++)
+			tmp |= *data++ << 8 * j;
+
+		intel_de_write(i915, DSI_CMD_TXPYLD(dsi_trans), tmp);
+	}
+
+	return 0;
+}
+
+static int dsi_send_pkt_hdr(struct intel_dsi_host *host,
+			    const struct mipi_dsi_packet *packet,
+			    bool enable_lpdt)
+{
+	struct intel_dsi *intel_dsi = host->intel_dsi;
+	struct drm_i915_private *dev_priv = to_i915(intel_dsi->base.base.dev);
+	enum transcoder dsi_trans = dsi_port_to_transcoder(host->port);
+	u32 tmp;
+
+	if (!wait_for_header_credits(dev_priv, dsi_trans, 1))
+		return -EBUSY;
+
+	tmp = intel_de_read(dev_priv, DSI_CMD_TXHDR(dsi_trans));
+
+	if (packet->payload)
+		tmp |= PAYLOAD_PRESENT;
+	else
+		tmp &= ~PAYLOAD_PRESENT;
+
+	tmp &= ~VBLANK_FENCE;
+
+	if (enable_lpdt)
+		tmp |= LP_DATA_TRANSFER;
+	else
+		tmp &= ~LP_DATA_TRANSFER;
+
+	tmp &= ~(PARAM_WC_MASK | VC_MASK | DT_MASK);
+	tmp |= ((packet->header[0] & VC_MASK) << VC_SHIFT);
+	tmp |= ((packet->header[0] & DT_MASK) << DT_SHIFT);
+	tmp |= (packet->header[1] << PARAM_WC_LOWER_SHIFT);
+	tmp |= (packet->header[2] << PARAM_WC_UPPER_SHIFT);
+	intel_de_write(dev_priv, DSI_CMD_TXHDR(dsi_trans), tmp);
+
+	return 0;
+}
+
+void icl_dsi_frame_update(struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	u32 tmp, mode_flags;
+	enum port port;
+
+	mode_flags = crtc_state->mode_flags;
+
+	/*
+	 * case 1 also covers dual link
+	 * In case of dual link, frame update should be set on
+	 * DSI_0
+	 */
+	if (mode_flags & I915_MODE_FLAG_DSI_USE_TE0)
+		port = PORT_A;
+	else if (mode_flags & I915_MODE_FLAG_DSI_USE_TE1)
+		port = PORT_B;
+	else
+		return;
+
+	tmp = intel_de_read(dev_priv, DSI_CMD_FRMCTL(port));
+	tmp |= DSI_FRAME_UPDATE_REQUEST;
+	intel_de_write(dev_priv, DSI_CMD_FRMCTL(port), tmp);
+}
+
+static void dsi_program_swing_and_deemphasis(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	enum phy phy;
+	u32 tmp;
+	int lane;
+
+	for_each_dsi_phy(phy, intel_dsi->phys) {
+		/*
+		 * Program voltage swing and pre-emphasis level values as per
+		 * table in BSPEC under DDI buffer programing
+		 */
+		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_LN(0, phy));
+		tmp &= ~(SCALING_MODE_SEL_MASK | RTERM_SELECT_MASK);
+		tmp |= SCALING_MODE_SEL(0x2);
+		tmp |= TAP2_DISABLE | TAP3_DISABLE;
+		tmp |= RTERM_SELECT(0x6);
+		intel_de_write(dev_priv, ICL_PORT_TX_DW5_GRP(phy), tmp);
+
+		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_AUX(phy));
+		tmp &= ~(SCALING_MODE_SEL_MASK | RTERM_SELECT_MASK);
+		tmp |= SCALING_MODE_SEL(0x2);
+		tmp |= TAP2_DISABLE | TAP3_DISABLE;
+		tmp |= RTERM_SELECT(0x6);
+		intel_de_write(dev_priv, ICL_PORT_TX_DW5_AUX(phy), tmp);
+
+		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW2_LN(0, phy));
+		tmp &= ~(SWING_SEL_LOWER_MASK | SWING_SEL_UPPER_MASK |
+			 RCOMP_SCALAR_MASK);
+		tmp |= SWING_SEL_UPPER(0x2);
+		tmp |= SWING_SEL_LOWER(0x2);
+		tmp |= RCOMP_SCALAR(0x98);
+		intel_de_write(dev_priv, ICL_PORT_TX_DW2_GRP(phy), tmp);
+
+		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW2_AUX(phy));
+		tmp &= ~(SWING_SEL_LOWER_MASK | SWING_SEL_UPPER_MASK |
+			 RCOMP_SCALAR_MASK);
+		tmp |= SWING_SEL_UPPER(0x2);
+		tmp |= SWING_SEL_LOWER(0x2);
+		tmp |= RCOMP_SCALAR(0x98);
+		intel_de_write(dev_priv, ICL_PORT_TX_DW2_AUX(phy), tmp);
+
+		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW4_AUX(phy));
+		tmp &= ~(POST_CURSOR_1_MASK | POST_CURSOR_2_MASK |
+			 CURSOR_COEFF_MASK);
+		tmp |= POST_CURSOR_1(0x0);
+		tmp |= POST_CURSOR_2(0x0);
+		tmp |= CURSOR_COEFF(0x3f);
+		intel_de_write(dev_priv, ICL_PORT_TX_DW4_AUX(phy), tmp);
+
+		for (lane = 0; lane <= 3; lane++) {
+			/* Bspec: must not use GRP register for write */
+			tmp = intel_de_read(dev_priv,
+					    ICL_PORT_TX_DW4_LN(lane, phy));
+			tmp &= ~(POST_CURSOR_1_MASK | POST_CURSOR_2_MASK |
+				 CURSOR_COEFF_MASK);
+			tmp |= POST_CURSOR_1(0x0);
+			tmp |= POST_CURSOR_2(0x0);
+			tmp |= CURSOR_COEFF(0x3f);
+			intel_de_write(dev_priv,
+				       ICL_PORT_TX_DW4_LN(lane, phy), tmp);
+		}
+	}
+}
+
+static void configure_dual_link_mode(struct intel_encoder *encoder,
+				     const struct intel_crtc_state *pipe_config)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	i915_reg_t dss_ctl1_reg, dss_ctl2_reg;
+	u32 dss_ctl1;
+
+	/* FIXME: Move all DSS handling to intel_vdsc.c */
+	if (DISPLAY_VER(dev_priv) >= 12) {
+		struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+
+		dss_ctl1_reg = ICL_PIPE_DSS_CTL1(crtc->pipe);
+		dss_ctl2_reg = ICL_PIPE_DSS_CTL2(crtc->pipe);
+	} else {
+		dss_ctl1_reg = DSS_CTL1;
+		dss_ctl2_reg = DSS_CTL2;
+	}
+
+	dss_ctl1 = intel_de_read(dev_priv, dss_ctl1_reg);
+	dss_ctl1 |= SPLITTER_ENABLE;
+	dss_ctl1 &= ~OVERLAP_PIXELS_MASK;
+	dss_ctl1 |= OVERLAP_PIXELS(intel_dsi->pixel_overlap);
+
+	if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK) {
+		const struct drm_display_mode *adjusted_mode =
+					&pipe_config->hw.adjusted_mode;
+		u32 dss_ctl2;
+		u16 hactive = adjusted_mode->crtc_hdisplay;
+		u16 dl_buffer_depth;
+
+		dss_ctl1 &= ~DUAL_LINK_MODE_INTERLEAVE;
+		dl_buffer_depth = hactive / 2 + intel_dsi->pixel_overlap;
+
+		if (dl_buffer_depth > MAX_DL_BUFFER_TARGET_DEPTH)
+			drm_err(&dev_priv->drm,
+				"DL buffer depth exceed max value\n");
+
+		dss_ctl1 &= ~LEFT_DL_BUF_TARGET_DEPTH_MASK;
+		dss_ctl1 |= LEFT_DL_BUF_TARGET_DEPTH(dl_buffer_depth);
+		dss_ctl2 = intel_de_read(dev_priv, dss_ctl2_reg);
+		dss_ctl2 &= ~RIGHT_DL_BUF_TARGET_DEPTH_MASK;
+		dss_ctl2 |= RIGHT_DL_BUF_TARGET_DEPTH(dl_buffer_depth);
+		intel_de_write(dev_priv, dss_ctl2_reg, dss_ctl2);
+	} else {
+		/* Interleave */
+		dss_ctl1 |= DUAL_LINK_MODE_INTERLEAVE;
+	}
+
+	intel_de_write(dev_priv, dss_ctl1_reg, dss_ctl1);
+}
+
+/* aka DSI 8X clock */
+static int afe_clk(struct intel_encoder *encoder,
+		   const struct intel_crtc_state *crtc_state)
+{
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	int bpp;
+
+	if (crtc_state->dsc.compression_enable)
+		bpp = crtc_state->dsc.compressed_bpp;
+	else
+		bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
+
+	return DIV_ROUND_CLOSEST(intel_dsi->pclk * bpp, intel_dsi->lane_count);
+}
+
+static void gen11_dsi_program_esc_clk_div(struct intel_encoder *encoder,
+					  const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	enum port port;
+	int afe_clk_khz;
+	int theo_word_clk, act_word_clk;
+	u32 esc_clk_div_m, esc_clk_div_m_phy;
+
+	afe_clk_khz = afe_clk(encoder, crtc_state);
+
+	if (IS_ALDERLAKE_S(dev_priv) || IS_ALDERLAKE_P(dev_priv)) {
+		theo_word_clk = DIV_ROUND_UP(afe_clk_khz, 8 * DSI_MAX_ESC_CLK);
+		act_word_clk = max(3, theo_word_clk + (theo_word_clk + 1) % 2);
+		esc_clk_div_m = act_word_clk * 8;
+		esc_clk_div_m_phy = (act_word_clk - 1) / 2;
+	} else {
+		esc_clk_div_m = DIV_ROUND_UP(afe_clk_khz, DSI_MAX_ESC_CLK);
+	}
+
+	for_each_dsi_port(port, intel_dsi->ports) {
+		intel_de_write(dev_priv, ICL_DSI_ESC_CLK_DIV(port),
+			       esc_clk_div_m & ICL_ESC_CLK_DIV_MASK);
+		intel_de_posting_read(dev_priv, ICL_DSI_ESC_CLK_DIV(port));
+	}
+
+	for_each_dsi_port(port, intel_dsi->ports) {
+		intel_de_write(dev_priv, ICL_DPHY_ESC_CLK_DIV(port),
+			       esc_clk_div_m & ICL_ESC_CLK_DIV_MASK);
+		intel_de_posting_read(dev_priv, ICL_DPHY_ESC_CLK_DIV(port));
+	}
+
+	if (IS_ALDERLAKE_S(dev_priv) || IS_ALDERLAKE_P(dev_priv)) {
+		for_each_dsi_port(port, intel_dsi->ports) {
+			intel_de_write(dev_priv, ADL_MIPIO_DW(port, 8),
+				       esc_clk_div_m_phy & TX_ESC_CLK_DIV_PHY);
+			intel_de_posting_read(dev_priv, ADL_MIPIO_DW(port, 8));
+		}
+	}
+}
+
+static void get_dsi_io_power_domains(struct drm_i915_private *dev_priv,
+				     struct intel_dsi *intel_dsi)
+{
+	enum port port;
+
+	for_each_dsi_port(port, intel_dsi->ports) {
+		drm_WARN_ON(&dev_priv->drm, intel_dsi->io_wakeref[port]);
+		intel_dsi->io_wakeref[port] =
+			intel_display_power_get(dev_priv,
+						port == PORT_A ?
+						POWER_DOMAIN_PORT_DDI_IO_A :
+						POWER_DOMAIN_PORT_DDI_IO_B);
+	}
+}
+
+static void gen11_dsi_enable_io_power(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	enum port port;
+	u32 tmp;
+
+	for_each_dsi_port(port, intel_dsi->ports) {
+		tmp = intel_de_read(dev_priv, ICL_DSI_IO_MODECTL(port));
+		tmp |= COMBO_PHY_MODE_DSI;
+		intel_de_write(dev_priv, ICL_DSI_IO_MODECTL(port), tmp);
+	}
+
+	get_dsi_io_power_domains(dev_priv, intel_dsi);
+}
+
+static void gen11_dsi_power_up_lanes(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	enum phy phy;
+
+	for_each_dsi_phy(phy, intel_dsi->phys)
+		intel_combo_phy_power_up_lanes(dev_priv, phy, true,
+					       intel_dsi->lane_count, false);
+}
+
+static void gen11_dsi_config_phy_lanes_sequence(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	enum phy phy;
+	u32 tmp;
+	int lane;
+
+	/* Step 4b(i) set loadgen select for transmit and aux lanes */
+	for_each_dsi_phy(phy, intel_dsi->phys) {
+		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW4_AUX(phy));
+		tmp &= ~LOADGEN_SELECT;
+		intel_de_write(dev_priv, ICL_PORT_TX_DW4_AUX(phy), tmp);
+		for (lane = 0; lane <= 3; lane++) {
+			tmp = intel_de_read(dev_priv,
+					    ICL_PORT_TX_DW4_LN(lane, phy));
+			tmp &= ~LOADGEN_SELECT;
+			if (lane != 2)
+				tmp |= LOADGEN_SELECT;
+			intel_de_write(dev_priv,
+				       ICL_PORT_TX_DW4_LN(lane, phy), tmp);
+		}
+	}
+
+	/* Step 4b(ii) set latency optimization for transmit and aux lanes */
+	for_each_dsi_phy(phy, intel_dsi->phys) {
+		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW2_AUX(phy));
+		tmp &= ~FRC_LATENCY_OPTIM_MASK;
+		tmp |= FRC_LATENCY_OPTIM_VAL(0x5);
+		intel_de_write(dev_priv, ICL_PORT_TX_DW2_AUX(phy), tmp);
+		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW2_LN(0, phy));
+		tmp &= ~FRC_LATENCY_OPTIM_MASK;
+		tmp |= FRC_LATENCY_OPTIM_VAL(0x5);
+		intel_de_write(dev_priv, ICL_PORT_TX_DW2_GRP(phy), tmp);
+
+		/* For EHL, TGL, set latency optimization for PCS_DW1 lanes */
+		if (IS_JSL_EHL(dev_priv) || (DISPLAY_VER(dev_priv) >= 12)) {
+			tmp = intel_de_read(dev_priv,
+					    ICL_PORT_PCS_DW1_AUX(phy));
+			tmp &= ~LATENCY_OPTIM_MASK;
+			tmp |= LATENCY_OPTIM_VAL(0);
+			intel_de_write(dev_priv, ICL_PORT_PCS_DW1_AUX(phy),
+				       tmp);
+
+			tmp = intel_de_read(dev_priv,
+					    ICL_PORT_PCS_DW1_LN(0, phy));
+			tmp &= ~LATENCY_OPTIM_MASK;
+			tmp |= LATENCY_OPTIM_VAL(0x1);
+			intel_de_write(dev_priv, ICL_PORT_PCS_DW1_GRP(phy),
+				       tmp);
+		}
+	}
+
+}
+
+static void gen11_dsi_voltage_swing_program_seq(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	u32 tmp;
+	enum phy phy;
+
+	/* clear common keeper enable bit */
+	for_each_dsi_phy(phy, intel_dsi->phys) {
+		tmp = intel_de_read(dev_priv, ICL_PORT_PCS_DW1_LN(0, phy));
+		tmp &= ~COMMON_KEEPER_EN;
+		intel_de_write(dev_priv, ICL_PORT_PCS_DW1_GRP(phy), tmp);
+		tmp = intel_de_read(dev_priv, ICL_PORT_PCS_DW1_AUX(phy));
+		tmp &= ~COMMON_KEEPER_EN;
+		intel_de_write(dev_priv, ICL_PORT_PCS_DW1_AUX(phy), tmp);
+	}
+
+	/*
+	 * Set SUS Clock Config bitfield to 11b
+	 * Note: loadgen select program is done
+	 * as part of lane phy sequence configuration
+	 */
+	for_each_dsi_phy(phy, intel_dsi->phys) {
+		tmp = intel_de_read(dev_priv, ICL_PORT_CL_DW5(phy));
+		tmp |= SUS_CLOCK_CONFIG;
+		intel_de_write(dev_priv, ICL_PORT_CL_DW5(phy), tmp);
+	}
+
+	/* Clear training enable to change swing values */
+	for_each_dsi_phy(phy, intel_dsi->phys) {
+		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_LN(0, phy));
+		tmp &= ~TX_TRAINING_EN;
+		intel_de_write(dev_priv, ICL_PORT_TX_DW5_GRP(phy), tmp);
+		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_AUX(phy));
+		tmp &= ~TX_TRAINING_EN;
+		intel_de_write(dev_priv, ICL_PORT_TX_DW5_AUX(phy), tmp);
+	}
+
+	/* Program swing and de-emphasis */
+	dsi_program_swing_and_deemphasis(encoder);
+
+	/* Set training enable to trigger update */
+	for_each_dsi_phy(phy, intel_dsi->phys) {
+		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_LN(0, phy));
+		tmp |= TX_TRAINING_EN;
+		intel_de_write(dev_priv, ICL_PORT_TX_DW5_GRP(phy), tmp);
+		tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_AUX(phy));
+		tmp |= TX_TRAINING_EN;
+		intel_de_write(dev_priv, ICL_PORT_TX_DW5_AUX(phy), tmp);
+	}
+}
+
+static void gen11_dsi_enable_ddi_buffer(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	u32 tmp;
+	enum port port;
+
+	for_each_dsi_port(port, intel_dsi->ports) {
+		tmp = intel_de_read(dev_priv, DDI_BUF_CTL(port));
+		tmp |= DDI_BUF_CTL_ENABLE;
+		intel_de_write(dev_priv, DDI_BUF_CTL(port), tmp);
+
+		if (wait_for_us(!(intel_de_read(dev_priv, DDI_BUF_CTL(port)) &
+				  DDI_BUF_IS_IDLE),
+				  500))
+			drm_err(&dev_priv->drm, "DDI port:%c buffer idle\n",
+				port_name(port));
+	}
+}
+
+static void
+gen11_dsi_setup_dphy_timings(struct intel_encoder *encoder,
+			     const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	u32 tmp;
+	enum port port;
+	enum phy phy;
+
+	/* Program T-INIT master registers */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		tmp = intel_de_read(dev_priv, ICL_DSI_T_INIT_MASTER(port));
+		tmp &= ~DSI_T_INIT_MASTER_MASK;
+		tmp |= intel_dsi->init_count;
+		intel_de_write(dev_priv, ICL_DSI_T_INIT_MASTER(port), tmp);
+	}
+
+	/* Program DPHY clock lanes timings */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		intel_de_write(dev_priv, DPHY_CLK_TIMING_PARAM(port),
+			       intel_dsi->dphy_reg);
+
+		/* shadow register inside display core */
+		intel_de_write(dev_priv, DSI_CLK_TIMING_PARAM(port),
+			       intel_dsi->dphy_reg);
+	}
+
+	/* Program DPHY data lanes timings */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		intel_de_write(dev_priv, DPHY_DATA_TIMING_PARAM(port),
+			       intel_dsi->dphy_data_lane_reg);
+
+		/* shadow register inside display core */
+		intel_de_write(dev_priv, DSI_DATA_TIMING_PARAM(port),
+			       intel_dsi->dphy_data_lane_reg);
+	}
+
+	/*
+	 * If DSI link operating at or below an 800 MHz,
+	 * TA_SURE should be override and programmed to
+	 * a value '0' inside TA_PARAM_REGISTERS otherwise
+	 * leave all fields at HW default values.
+	 */
+	if (DISPLAY_VER(dev_priv) == 11) {
+		if (afe_clk(encoder, crtc_state) <= 800000) {
+			for_each_dsi_port(port, intel_dsi->ports) {
+				tmp = intel_de_read(dev_priv,
+						    DPHY_TA_TIMING_PARAM(port));
+				tmp &= ~TA_SURE_MASK;
+				tmp |= TA_SURE_OVERRIDE | TA_SURE(0);
+				intel_de_write(dev_priv,
+					       DPHY_TA_TIMING_PARAM(port),
+					       tmp);
+
+				/* shadow register inside display core */
+				tmp = intel_de_read(dev_priv,
+						    DSI_TA_TIMING_PARAM(port));
+				tmp &= ~TA_SURE_MASK;
+				tmp |= TA_SURE_OVERRIDE | TA_SURE(0);
+				intel_de_write(dev_priv,
+					       DSI_TA_TIMING_PARAM(port), tmp);
+			}
+		}
+	}
+
+	if (IS_JSL_EHL(dev_priv)) {
+		for_each_dsi_phy(phy, intel_dsi->phys) {
+			tmp = intel_de_read(dev_priv, ICL_DPHY_CHKN(phy));
+			tmp |= ICL_DPHY_CHKN_AFE_OVER_PPI_STRAP;
+			intel_de_write(dev_priv, ICL_DPHY_CHKN(phy), tmp);
+		}
+	}
+}
+
+static void gen11_dsi_gate_clocks(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	u32 tmp;
+	enum phy phy;
+
+	mutex_lock(&dev_priv->display.dpll.lock);
+	tmp = intel_de_read(dev_priv, ICL_DPCLKA_CFGCR0);
+	for_each_dsi_phy(phy, intel_dsi->phys)
+		tmp |= ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy);
+
+	intel_de_write(dev_priv, ICL_DPCLKA_CFGCR0, tmp);
+	mutex_unlock(&dev_priv->display.dpll.lock);
+}
+
+static void gen11_dsi_ungate_clocks(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	u32 tmp;
+	enum phy phy;
+
+	mutex_lock(&dev_priv->display.dpll.lock);
+	tmp = intel_de_read(dev_priv, ICL_DPCLKA_CFGCR0);
+	for_each_dsi_phy(phy, intel_dsi->phys)
+		tmp &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy);
+
+	intel_de_write(dev_priv, ICL_DPCLKA_CFGCR0, tmp);
+	mutex_unlock(&dev_priv->display.dpll.lock);
+}
+
+static bool gen11_dsi_is_clock_enabled(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	bool clock_enabled = false;
+	enum phy phy;
+	u32 tmp;
+
+	tmp = intel_de_read(dev_priv, ICL_DPCLKA_CFGCR0);
+
+	for_each_dsi_phy(phy, intel_dsi->phys) {
+		if (!(tmp & ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy)))
+			clock_enabled = true;
+	}
+
+	return clock_enabled;
+}
+
+static void gen11_dsi_map_pll(struct intel_encoder *encoder,
+			      const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	struct intel_shared_dpll *pll = crtc_state->shared_dpll;
+	enum phy phy;
+	u32 val;
+
+	mutex_lock(&dev_priv->display.dpll.lock);
+
+	val = intel_de_read(dev_priv, ICL_DPCLKA_CFGCR0);
+	for_each_dsi_phy(phy, intel_dsi->phys) {
+		val &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy);
+		val |= ICL_DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, phy);
+	}
+	intel_de_write(dev_priv, ICL_DPCLKA_CFGCR0, val);
+
+	for_each_dsi_phy(phy, intel_dsi->phys) {
+		val &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy);
+	}
+	intel_de_write(dev_priv, ICL_DPCLKA_CFGCR0, val);
+
+	intel_de_posting_read(dev_priv, ICL_DPCLKA_CFGCR0);
+
+	mutex_unlock(&dev_priv->display.dpll.lock);
+}
+
+static void
+gen11_dsi_configure_transcoder(struct intel_encoder *encoder,
+			       const struct intel_crtc_state *pipe_config)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+	enum pipe pipe = crtc->pipe;
+	u32 tmp;
+	enum port port;
+	enum transcoder dsi_trans;
+
+	for_each_dsi_port(port, intel_dsi->ports) {
+		dsi_trans = dsi_port_to_transcoder(port);
+		tmp = intel_de_read(dev_priv, DSI_TRANS_FUNC_CONF(dsi_trans));
+
+		if (intel_dsi->eotp_pkt)
+			tmp &= ~EOTP_DISABLED;
+		else
+			tmp |= EOTP_DISABLED;
+
+		/* enable link calibration if freq > 1.5Gbps */
+		if (afe_clk(encoder, pipe_config) >= 1500 * 1000) {
+			tmp &= ~LINK_CALIBRATION_MASK;
+			tmp |= CALIBRATION_ENABLED_INITIAL_ONLY;
+		}
+
+		/* configure continuous clock */
+		tmp &= ~CONTINUOUS_CLK_MASK;
+		if (intel_dsi->clock_stop)
+			tmp |= CLK_ENTER_LP_AFTER_DATA;
+		else
+			tmp |= CLK_HS_CONTINUOUS;
+
+		/* configure buffer threshold limit to minimum */
+		tmp &= ~PIX_BUF_THRESHOLD_MASK;
+		tmp |= PIX_BUF_THRESHOLD_1_4;
+
+		/* set virtual channel to '0' */
+		tmp &= ~PIX_VIRT_CHAN_MASK;
+		tmp |= PIX_VIRT_CHAN(0);
+
+		/* program BGR transmission */
+		if (intel_dsi->bgr_enabled)
+			tmp |= BGR_TRANSMISSION;
+
+		/* select pixel format */
+		tmp &= ~PIX_FMT_MASK;
+		if (pipe_config->dsc.compression_enable) {
+			tmp |= PIX_FMT_COMPRESSED;
+		} else {
+			switch (intel_dsi->pixel_format) {
+			default:
+				MISSING_CASE(intel_dsi->pixel_format);
+				fallthrough;
+			case MIPI_DSI_FMT_RGB565:
+				tmp |= PIX_FMT_RGB565;
+				break;
+			case MIPI_DSI_FMT_RGB666_PACKED:
+				tmp |= PIX_FMT_RGB666_PACKED;
+				break;
+			case MIPI_DSI_FMT_RGB666:
+				tmp |= PIX_FMT_RGB666_LOOSE;
+				break;
+			case MIPI_DSI_FMT_RGB888:
+				tmp |= PIX_FMT_RGB888;
+				break;
+			}
+		}
+
+		if (DISPLAY_VER(dev_priv) >= 12) {
+			if (is_vid_mode(intel_dsi))
+				tmp |= BLANKING_PACKET_ENABLE;
+		}
+
+		/* program DSI operation mode */
+		if (is_vid_mode(intel_dsi)) {
+			tmp &= ~OP_MODE_MASK;
+			switch (intel_dsi->video_mode) {
+			default:
+				MISSING_CASE(intel_dsi->video_mode);
+				fallthrough;
+			case NON_BURST_SYNC_EVENTS:
+				tmp |= VIDEO_MODE_SYNC_EVENT;
+				break;
+			case NON_BURST_SYNC_PULSE:
+				tmp |= VIDEO_MODE_SYNC_PULSE;
+				break;
+			}
+		} else {
+			/*
+			 * FIXME: Retrieve this info from VBT.
+			 * As per the spec when dsi transcoder is operating
+			 * in TE GATE mode, TE comes from GPIO
+			 * which is UTIL PIN for DSI 0.
+			 * Also this GPIO would not be used for other
+			 * purposes is an assumption.
+			 */
+			tmp &= ~OP_MODE_MASK;
+			tmp |= CMD_MODE_TE_GATE;
+			tmp |= TE_SOURCE_GPIO;
+		}
+
+		intel_de_write(dev_priv, DSI_TRANS_FUNC_CONF(dsi_trans), tmp);
+	}
+
+	/* enable port sync mode if dual link */
+	if (intel_dsi->dual_link) {
+		for_each_dsi_port(port, intel_dsi->ports) {
+			dsi_trans = dsi_port_to_transcoder(port);
+			tmp = intel_de_read(dev_priv,
+					    TRANS_DDI_FUNC_CTL2(dsi_trans));
+			tmp |= PORT_SYNC_MODE_ENABLE;
+			intel_de_write(dev_priv,
+				       TRANS_DDI_FUNC_CTL2(dsi_trans), tmp);
+		}
+
+		/* configure stream splitting */
+		configure_dual_link_mode(encoder, pipe_config);
+	}
+
+	for_each_dsi_port(port, intel_dsi->ports) {
+		dsi_trans = dsi_port_to_transcoder(port);
+
+		/* select data lane width */
+		tmp = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans));
+		tmp &= ~DDI_PORT_WIDTH_MASK;
+		tmp |= DDI_PORT_WIDTH(intel_dsi->lane_count);
+
+		/* select input pipe */
+		tmp &= ~TRANS_DDI_EDP_INPUT_MASK;
+		switch (pipe) {
+		default:
+			MISSING_CASE(pipe);
+			fallthrough;
+		case PIPE_A:
+			tmp |= TRANS_DDI_EDP_INPUT_A_ON;
+			break;
+		case PIPE_B:
+			tmp |= TRANS_DDI_EDP_INPUT_B_ONOFF;
+			break;
+		case PIPE_C:
+			tmp |= TRANS_DDI_EDP_INPUT_C_ONOFF;
+			break;
+		case PIPE_D:
+			tmp |= TRANS_DDI_EDP_INPUT_D_ONOFF;
+			break;
+		}
+
+		/* enable DDI buffer */
+		tmp |= TRANS_DDI_FUNC_ENABLE;
+		intel_de_write(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans), tmp);
+	}
+
+	/* wait for link ready */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		dsi_trans = dsi_port_to_transcoder(port);
+		if (wait_for_us((intel_de_read(dev_priv, DSI_TRANS_FUNC_CONF(dsi_trans)) &
+				 LINK_READY), 2500))
+			drm_err(&dev_priv->drm, "DSI link not ready\n");
+	}
+}
+
+static void
+gen11_dsi_set_transcoder_timings(struct intel_encoder *encoder,
+				 const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	const struct drm_display_mode *adjusted_mode =
+		&crtc_state->hw.adjusted_mode;
+	enum port port;
+	enum transcoder dsi_trans;
+	/* horizontal timings */
+	u16 htotal, hactive, hsync_start, hsync_end, hsync_size;
+	u16 hback_porch;
+	/* vertical timings */
+	u16 vtotal, vactive, vsync_start, vsync_end, vsync_shift;
+	int mul = 1, div = 1;
+
+	/*
+	 * Adjust horizontal timings (htotal, hsync_start, hsync_end) to account
+	 * for slower link speed if DSC is enabled.
+	 *
+	 * The compression frequency ratio is the ratio between compressed and
+	 * non-compressed link speeds, and simplifies down to the ratio between
+	 * compressed and non-compressed bpp.
+	 */
+	if (crtc_state->dsc.compression_enable) {
+		mul = crtc_state->dsc.compressed_bpp;
+		div = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
+	}
+
+	hactive = adjusted_mode->crtc_hdisplay;
+
+	if (is_vid_mode(intel_dsi))
+		htotal = DIV_ROUND_UP(adjusted_mode->crtc_htotal * mul, div);
+	else
+		htotal = DIV_ROUND_UP((hactive + 160) * mul, div);
+
+	hsync_start = DIV_ROUND_UP(adjusted_mode->crtc_hsync_start * mul, div);
+	hsync_end = DIV_ROUND_UP(adjusted_mode->crtc_hsync_end * mul, div);
+	hsync_size  = hsync_end - hsync_start;
+	hback_porch = (adjusted_mode->crtc_htotal -
+		       adjusted_mode->crtc_hsync_end);
+	vactive = adjusted_mode->crtc_vdisplay;
+
+	if (is_vid_mode(intel_dsi)) {
+		vtotal = adjusted_mode->crtc_vtotal;
+	} else {
+		int bpp, line_time_us, byte_clk_period_ns;
+
+		if (crtc_state->dsc.compression_enable)
+			bpp = crtc_state->dsc.compressed_bpp;
+		else
+			bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
+
+		byte_clk_period_ns = 1000000 / afe_clk(encoder, crtc_state);
+		line_time_us = (htotal * (bpp / 8) * byte_clk_period_ns) / (1000 * intel_dsi->lane_count);
+		vtotal = vactive + DIV_ROUND_UP(400, line_time_us);
+	}
+	vsync_start = adjusted_mode->crtc_vsync_start;
+	vsync_end = adjusted_mode->crtc_vsync_end;
+	vsync_shift = hsync_start - htotal / 2;
+
+	if (intel_dsi->dual_link) {
+		hactive /= 2;
+		if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK)
+			hactive += intel_dsi->pixel_overlap;
+		htotal /= 2;
+	}
+
+	/* minimum hactive as per bspec: 256 pixels */
+	if (adjusted_mode->crtc_hdisplay < 256)
+		drm_err(&dev_priv->drm, "hactive is less then 256 pixels\n");
+
+	/* if RGB666 format, then hactive must be multiple of 4 pixels */
+	if (intel_dsi->pixel_format == MIPI_DSI_FMT_RGB666 && hactive % 4 != 0)
+		drm_err(&dev_priv->drm,
+			"hactive pixels are not multiple of 4\n");
+
+	/* program TRANS_HTOTAL register */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		dsi_trans = dsi_port_to_transcoder(port);
+		intel_de_write(dev_priv, HTOTAL(dsi_trans),
+			       (hactive - 1) | ((htotal - 1) << 16));
+	}
+
+	/* TRANS_HSYNC register to be programmed only for video mode */
+	if (is_vid_mode(intel_dsi)) {
+		if (intel_dsi->video_mode == NON_BURST_SYNC_PULSE) {
+			/* BSPEC: hsync size should be atleast 16 pixels */
+			if (hsync_size < 16)
+				drm_err(&dev_priv->drm,
+					"hsync size < 16 pixels\n");
+		}
+
+		if (hback_porch < 16)
+			drm_err(&dev_priv->drm, "hback porch < 16 pixels\n");
+
+		if (intel_dsi->dual_link) {
+			hsync_start /= 2;
+			hsync_end /= 2;
+		}
+
+		for_each_dsi_port(port, intel_dsi->ports) {
+			dsi_trans = dsi_port_to_transcoder(port);
+			intel_de_write(dev_priv, HSYNC(dsi_trans),
+				       (hsync_start - 1) | ((hsync_end - 1) << 16));
+		}
+	}
+
+	/* program TRANS_VTOTAL register */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		dsi_trans = dsi_port_to_transcoder(port);
+		/*
+		 * FIXME: Programing this by assuming progressive mode, since
+		 * non-interlaced info from VBT is not saved inside
+		 * struct drm_display_mode.
+		 * For interlace mode: program required pixel minus 2
+		 */
+		intel_de_write(dev_priv, VTOTAL(dsi_trans),
+			       (vactive - 1) | ((vtotal - 1) << 16));
+	}
+
+	if (vsync_end < vsync_start || vsync_end > vtotal)
+		drm_err(&dev_priv->drm, "Invalid vsync_end value\n");
+
+	if (vsync_start < vactive)
+		drm_err(&dev_priv->drm, "vsync_start less than vactive\n");
+
+	/* program TRANS_VSYNC register for video mode only */
+	if (is_vid_mode(intel_dsi)) {
+		for_each_dsi_port(port, intel_dsi->ports) {
+			dsi_trans = dsi_port_to_transcoder(port);
+			intel_de_write(dev_priv, VSYNC(dsi_trans),
+				       (vsync_start - 1) | ((vsync_end - 1) << 16));
+		}
+	}
+
+	/*
+	 * FIXME: It has to be programmed only for video modes and interlaced
+	 * modes. Put the check condition here once interlaced
+	 * info available as described above.
+	 * program TRANS_VSYNCSHIFT register
+	 */
+	if (is_vid_mode(intel_dsi)) {
+		for_each_dsi_port(port, intel_dsi->ports) {
+			dsi_trans = dsi_port_to_transcoder(port);
+			intel_de_write(dev_priv, VSYNCSHIFT(dsi_trans),
+				       vsync_shift);
+		}
+	}
+
+	/* program TRANS_VBLANK register, should be same as vtotal programmed */
+	if (DISPLAY_VER(dev_priv) >= 12) {
+		for_each_dsi_port(port, intel_dsi->ports) {
+			dsi_trans = dsi_port_to_transcoder(port);
+			intel_de_write(dev_priv, VBLANK(dsi_trans),
+				       (vactive - 1) | ((vtotal - 1) << 16));
+		}
+	}
+}
+
+static void gen11_dsi_enable_transcoder(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	enum port port;
+	enum transcoder dsi_trans;
+	u32 tmp;
+
+	for_each_dsi_port(port, intel_dsi->ports) {
+		dsi_trans = dsi_port_to_transcoder(port);
+		tmp = intel_de_read(dev_priv, PIPECONF(dsi_trans));
+		tmp |= PIPECONF_ENABLE;
+		intel_de_write(dev_priv, PIPECONF(dsi_trans), tmp);
+
+		/* wait for transcoder to be enabled */
+		if (intel_de_wait_for_set(dev_priv, PIPECONF(dsi_trans),
+					  PIPECONF_STATE_ENABLE, 10))
+			drm_err(&dev_priv->drm,
+				"DSI transcoder not enabled\n");
+	}
+}
+
+static void gen11_dsi_setup_timeouts(struct intel_encoder *encoder,
+				     const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	enum port port;
+	enum transcoder dsi_trans;
+	u32 tmp, hs_tx_timeout, lp_rx_timeout, ta_timeout, divisor, mul;
+
+	/*
+	 * escape clock count calculation:
+	 * BYTE_CLK_COUNT = TIME_NS/(8 * UI)
+	 * UI (nsec) = (10^6)/Bitrate
+	 * TIME_NS = (BYTE_CLK_COUNT * 8 * 10^6)/ Bitrate
+	 * ESCAPE_CLK_COUNT  = TIME_NS/ESC_CLK_NS
+	 */
+	divisor = intel_dsi_tlpx_ns(intel_dsi) * afe_clk(encoder, crtc_state) * 1000;
+	mul = 8 * 1000000;
+	hs_tx_timeout = DIV_ROUND_UP(intel_dsi->hs_tx_timeout * mul,
+				     divisor);
+	lp_rx_timeout = DIV_ROUND_UP(intel_dsi->lp_rx_timeout * mul, divisor);
+	ta_timeout = DIV_ROUND_UP(intel_dsi->turn_arnd_val * mul, divisor);
+
+	for_each_dsi_port(port, intel_dsi->ports) {
+		dsi_trans = dsi_port_to_transcoder(port);
+
+		/* program hst_tx_timeout */
+		tmp = intel_de_read(dev_priv, DSI_HSTX_TO(dsi_trans));
+		tmp &= ~HSTX_TIMEOUT_VALUE_MASK;
+		tmp |= HSTX_TIMEOUT_VALUE(hs_tx_timeout);
+		intel_de_write(dev_priv, DSI_HSTX_TO(dsi_trans), tmp);
+
+		/* FIXME: DSI_CALIB_TO */
+
+		/* program lp_rx_host timeout */
+		tmp = intel_de_read(dev_priv, DSI_LPRX_HOST_TO(dsi_trans));
+		tmp &= ~LPRX_TIMEOUT_VALUE_MASK;
+		tmp |= LPRX_TIMEOUT_VALUE(lp_rx_timeout);
+		intel_de_write(dev_priv, DSI_LPRX_HOST_TO(dsi_trans), tmp);
+
+		/* FIXME: DSI_PWAIT_TO */
+
+		/* program turn around timeout */
+		tmp = intel_de_read(dev_priv, DSI_TA_TO(dsi_trans));
+		tmp &= ~TA_TIMEOUT_VALUE_MASK;
+		tmp |= TA_TIMEOUT_VALUE(ta_timeout);
+		intel_de_write(dev_priv, DSI_TA_TO(dsi_trans), tmp);
+	}
+}
+
+static void gen11_dsi_config_util_pin(struct intel_encoder *encoder,
+				      bool enable)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	u32 tmp;
+
+	/*
+	 * used as TE i/p for DSI0,
+	 * for dual link/DSI1 TE is from slave DSI1
+	 * through GPIO.
+	 */
+	if (is_vid_mode(intel_dsi) || (intel_dsi->ports & BIT(PORT_B)))
+		return;
+
+	tmp = intel_de_read(dev_priv, UTIL_PIN_CTL);
+
+	if (enable) {
+		tmp |= UTIL_PIN_DIRECTION_INPUT;
+		tmp |= UTIL_PIN_ENABLE;
+	} else {
+		tmp &= ~UTIL_PIN_ENABLE;
+	}
+	intel_de_write(dev_priv, UTIL_PIN_CTL, tmp);
+}
+
+static void
+gen11_dsi_enable_port_and_phy(struct intel_encoder *encoder,
+			      const struct intel_crtc_state *crtc_state)
+{
+	/* step 4a: power up all lanes of the DDI used by DSI */
+	gen11_dsi_power_up_lanes(encoder);
+
+	/* step 4b: configure lane sequencing of the Combo-PHY transmitters */
+	gen11_dsi_config_phy_lanes_sequence(encoder);
+
+	/* step 4c: configure voltage swing and skew */
+	gen11_dsi_voltage_swing_program_seq(encoder);
+
+	/* enable DDI buffer */
+	gen11_dsi_enable_ddi_buffer(encoder);
+
+	/* setup D-PHY timings */
+	gen11_dsi_setup_dphy_timings(encoder, crtc_state);
+
+	/* Since transcoder is configured to take events from GPIO */
+	gen11_dsi_config_util_pin(encoder, true);
+
+	/* step 4h: setup DSI protocol timeouts */
+	gen11_dsi_setup_timeouts(encoder, crtc_state);
+
+	/* Step (4h, 4i, 4j, 4k): Configure transcoder */
+	gen11_dsi_configure_transcoder(encoder, crtc_state);
+
+	/* Step 4l: Gate DDI clocks */
+	gen11_dsi_gate_clocks(encoder);
+}
+
+static void gen11_dsi_powerup_panel(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	struct mipi_dsi_device *dsi;
+	enum port port;
+	enum transcoder dsi_trans;
+	u32 tmp;
+	int ret;
+
+	/* set maximum return packet size */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		dsi_trans = dsi_port_to_transcoder(port);
+
+		/*
+		 * FIXME: This uses the number of DW's currently in the payload
+		 * receive queue. This is probably not what we want here.
+		 */
+		tmp = intel_de_read(dev_priv, DSI_CMD_RXCTL(dsi_trans));
+		tmp &= NUMBER_RX_PLOAD_DW_MASK;
+		/* multiply "Number Rx Payload DW" by 4 to get max value */
+		tmp = tmp * 4;
+		dsi = intel_dsi->dsi_hosts[port]->device;
+		ret = mipi_dsi_set_maximum_return_packet_size(dsi, tmp);
+		if (ret < 0)
+			drm_err(&dev_priv->drm,
+				"error setting max return pkt size%d\n", tmp);
+	}
+
+	/* panel power on related mipi dsi vbt sequences */
+	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_POWER_ON);
+	msleep(intel_dsi->panel_on_delay);
+	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DEASSERT_RESET);
+	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_INIT_OTP);
+	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DISPLAY_ON);
+
+	/* ensure all panel commands dispatched before enabling transcoder */
+	wait_for_cmds_dispatched_to_panel(encoder);
+}
+
+static void gen11_dsi_pre_pll_enable(struct intel_atomic_state *state,
+				     struct intel_encoder *encoder,
+				     const struct intel_crtc_state *crtc_state,
+				     const struct drm_connector_state *conn_state)
+{
+	/* step2: enable IO power */
+	gen11_dsi_enable_io_power(encoder);
+
+	/* step3: enable DSI PLL */
+	gen11_dsi_program_esc_clk_div(encoder, crtc_state);
+}
+
+static void gen11_dsi_pre_enable(struct intel_atomic_state *state,
+				 struct intel_encoder *encoder,
+				 const struct intel_crtc_state *pipe_config,
+				 const struct drm_connector_state *conn_state)
+{
+	/* step3b */
+	gen11_dsi_map_pll(encoder, pipe_config);
+
+	/* step4: enable DSI port and DPHY */
+	gen11_dsi_enable_port_and_phy(encoder, pipe_config);
+
+	/* step5: program and powerup panel */
+	gen11_dsi_powerup_panel(encoder);
+
+	intel_dsc_dsi_pps_write(encoder, pipe_config);
+
+	/* step6c: configure transcoder timings */
+	gen11_dsi_set_transcoder_timings(encoder, pipe_config);
+}
+
+/*
+ * Wa_1409054076:icl,jsl,ehl
+ * When pipe A is disabled and MIPI DSI is enabled on pipe B,
+ * the AMT KVMR feature will incorrectly see pipe A as enabled.
+ * Set 0x42080 bit 23=1 before enabling DSI on pipe B and leave
+ * it set while DSI is enabled on pipe B
+ */
+static void icl_apply_kvmr_pipe_a_wa(struct intel_encoder *encoder,
+				     enum pipe pipe, bool enable)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+
+	if (DISPLAY_VER(dev_priv) == 11 && pipe == PIPE_B)
+		intel_de_rmw(dev_priv, CHICKEN_PAR1_1,
+			     IGNORE_KVMR_PIPE_A,
+			     enable ? IGNORE_KVMR_PIPE_A : 0);
+}
+
+/*
+ * Wa_16012360555:adl-p
+ * SW will have to program the "LP to HS Wakeup Guardband"
+ * to account for the repeaters on the HS Request/Ready
+ * PPI signaling between the Display engine and the DPHY.
+ */
+static void adlp_set_lp_hs_wakeup_gb(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	enum port port;
+
+	if (DISPLAY_VER(i915) == 13) {
+		for_each_dsi_port(port, intel_dsi->ports)
+			intel_de_rmw(i915, TGL_DSI_CHKN_REG(port),
+				     TGL_DSI_CHKN_LSHS_GB_MASK,
+				     TGL_DSI_CHKN_LSHS_GB(4));
+	}
+}
+
+static void gen11_dsi_enable(struct intel_atomic_state *state,
+			     struct intel_encoder *encoder,
+			     const struct intel_crtc_state *crtc_state,
+			     const struct drm_connector_state *conn_state)
+{
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	struct intel_crtc *crtc = to_intel_crtc(conn_state->crtc);
+
+	drm_WARN_ON(state->base.dev, crtc_state->has_pch_encoder);
+
+	/* Wa_1409054076:icl,jsl,ehl */
+	icl_apply_kvmr_pipe_a_wa(encoder, crtc->pipe, true);
+
+	/* Wa_16012360555:adl-p */
+	adlp_set_lp_hs_wakeup_gb(encoder);
+
+	/* step6d: enable dsi transcoder */
+	gen11_dsi_enable_transcoder(encoder);
+
+	/* step7: enable backlight */
+	intel_backlight_enable(crtc_state, conn_state);
+	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_BACKLIGHT_ON);
+
+	intel_crtc_vblank_on(crtc_state);
+}
+
+static void gen11_dsi_disable_transcoder(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	enum port port;
+	enum transcoder dsi_trans;
+	u32 tmp;
+
+	for_each_dsi_port(port, intel_dsi->ports) {
+		dsi_trans = dsi_port_to_transcoder(port);
+
+		/* disable transcoder */
+		tmp = intel_de_read(dev_priv, PIPECONF(dsi_trans));
+		tmp &= ~PIPECONF_ENABLE;
+		intel_de_write(dev_priv, PIPECONF(dsi_trans), tmp);
+
+		/* wait for transcoder to be disabled */
+		if (intel_de_wait_for_clear(dev_priv, PIPECONF(dsi_trans),
+					    PIPECONF_STATE_ENABLE, 50))
+			drm_err(&dev_priv->drm,
+				"DSI trancoder not disabled\n");
+	}
+}
+
+static void gen11_dsi_powerdown_panel(struct intel_encoder *encoder)
+{
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+
+	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DISPLAY_OFF);
+	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_ASSERT_RESET);
+	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_POWER_OFF);
+
+	/* ensure cmds dispatched to panel */
+	wait_for_cmds_dispatched_to_panel(encoder);
+}
+
+static void gen11_dsi_deconfigure_trancoder(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	enum port port;
+	enum transcoder dsi_trans;
+	u32 tmp;
+
+	/* disable periodic update mode */
+	if (is_cmd_mode(intel_dsi)) {
+		for_each_dsi_port(port, intel_dsi->ports) {
+			tmp = intel_de_read(dev_priv, DSI_CMD_FRMCTL(port));
+			tmp &= ~DSI_PERIODIC_FRAME_UPDATE_ENABLE;
+			intel_de_write(dev_priv, DSI_CMD_FRMCTL(port), tmp);
+		}
+	}
+
+	/* put dsi link in ULPS */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		dsi_trans = dsi_port_to_transcoder(port);
+		tmp = intel_de_read(dev_priv, DSI_LP_MSG(dsi_trans));
+		tmp |= LINK_ENTER_ULPS;
+		tmp &= ~LINK_ULPS_TYPE_LP11;
+		intel_de_write(dev_priv, DSI_LP_MSG(dsi_trans), tmp);
+
+		if (wait_for_us((intel_de_read(dev_priv, DSI_LP_MSG(dsi_trans)) &
+				 LINK_IN_ULPS),
+				10))
+			drm_err(&dev_priv->drm, "DSI link not in ULPS\n");
+	}
+
+	/* disable ddi function */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		dsi_trans = dsi_port_to_transcoder(port);
+		tmp = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans));
+		tmp &= ~TRANS_DDI_FUNC_ENABLE;
+		intel_de_write(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans), tmp);
+	}
+
+	/* disable port sync mode if dual link */
+	if (intel_dsi->dual_link) {
+		for_each_dsi_port(port, intel_dsi->ports) {
+			dsi_trans = dsi_port_to_transcoder(port);
+			tmp = intel_de_read(dev_priv,
+					    TRANS_DDI_FUNC_CTL2(dsi_trans));
+			tmp &= ~PORT_SYNC_MODE_ENABLE;
+			intel_de_write(dev_priv,
+				       TRANS_DDI_FUNC_CTL2(dsi_trans), tmp);
+		}
+	}
+}
+
+static void gen11_dsi_disable_port(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	u32 tmp;
+	enum port port;
+
+	gen11_dsi_ungate_clocks(encoder);
+	for_each_dsi_port(port, intel_dsi->ports) {
+		tmp = intel_de_read(dev_priv, DDI_BUF_CTL(port));
+		tmp &= ~DDI_BUF_CTL_ENABLE;
+		intel_de_write(dev_priv, DDI_BUF_CTL(port), tmp);
+
+		if (wait_for_us((intel_de_read(dev_priv, DDI_BUF_CTL(port)) &
+				 DDI_BUF_IS_IDLE),
+				 8))
+			drm_err(&dev_priv->drm,
+				"DDI port:%c buffer not idle\n",
+				port_name(port));
+	}
+	gen11_dsi_gate_clocks(encoder);
+}
+
+static void gen11_dsi_disable_io_power(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	enum port port;
+	u32 tmp;
+
+	for_each_dsi_port(port, intel_dsi->ports) {
+		intel_wakeref_t wakeref;
+
+		wakeref = fetch_and_zero(&intel_dsi->io_wakeref[port]);
+		intel_display_power_put(dev_priv,
+					port == PORT_A ?
+					POWER_DOMAIN_PORT_DDI_IO_A :
+					POWER_DOMAIN_PORT_DDI_IO_B,
+					wakeref);
+	}
+
+	/* set mode to DDI */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		tmp = intel_de_read(dev_priv, ICL_DSI_IO_MODECTL(port));
+		tmp &= ~COMBO_PHY_MODE_DSI;
+		intel_de_write(dev_priv, ICL_DSI_IO_MODECTL(port), tmp);
+	}
+}
+
+static void gen11_dsi_disable(struct intel_atomic_state *state,
+			      struct intel_encoder *encoder,
+			      const struct intel_crtc_state *old_crtc_state,
+			      const struct drm_connector_state *old_conn_state)
+{
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	struct intel_crtc *crtc = to_intel_crtc(old_conn_state->crtc);
+
+	/* step1: turn off backlight */
+	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_BACKLIGHT_OFF);
+	intel_backlight_disable(old_conn_state);
+
+	/* step2d,e: disable transcoder and wait */
+	gen11_dsi_disable_transcoder(encoder);
+
+	/* Wa_1409054076:icl,jsl,ehl */
+	icl_apply_kvmr_pipe_a_wa(encoder, crtc->pipe, false);
+
+	/* step2f,g: powerdown panel */
+	gen11_dsi_powerdown_panel(encoder);
+
+	/* step2h,i,j: deconfig trancoder */
+	gen11_dsi_deconfigure_trancoder(encoder);
+
+	/* step3: disable port */
+	gen11_dsi_disable_port(encoder);
+
+	gen11_dsi_config_util_pin(encoder, false);
+
+	/* step4: disable IO power */
+	gen11_dsi_disable_io_power(encoder);
+}
+
+static void gen11_dsi_post_disable(struct intel_atomic_state *state,
+				   struct intel_encoder *encoder,
+				   const struct intel_crtc_state *old_crtc_state,
+				   const struct drm_connector_state *old_conn_state)
+{
+	intel_crtc_vblank_off(old_crtc_state);
+
+	intel_dsc_disable(old_crtc_state);
+
+	skl_scaler_disable(old_crtc_state);
+}
+
+static enum drm_mode_status gen11_dsi_mode_valid(struct drm_connector *connector,
+						 struct drm_display_mode *mode)
+{
+	struct drm_i915_private *i915 = to_i915(connector->dev);
+	enum drm_mode_status status;
+
+	status = intel_cpu_transcoder_mode_valid(i915, mode);
+	if (status != MODE_OK)
+		return status;
+
+	/* FIXME: DSC? */
+	return intel_dsi_mode_valid(connector, mode);
+}
+
+static void gen11_dsi_get_timings(struct intel_encoder *encoder,
+				  struct intel_crtc_state *pipe_config)
+{
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	struct drm_display_mode *adjusted_mode =
+					&pipe_config->hw.adjusted_mode;
+
+	if (pipe_config->dsc.compressed_bpp) {
+		int div = pipe_config->dsc.compressed_bpp;
+		int mul = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
+
+		adjusted_mode->crtc_htotal =
+			DIV_ROUND_UP(adjusted_mode->crtc_htotal * mul, div);
+		adjusted_mode->crtc_hsync_start =
+			DIV_ROUND_UP(adjusted_mode->crtc_hsync_start * mul, div);
+		adjusted_mode->crtc_hsync_end =
+			DIV_ROUND_UP(adjusted_mode->crtc_hsync_end * mul, div);
+	}
+
+	if (intel_dsi->dual_link) {
+		adjusted_mode->crtc_hdisplay *= 2;
+		if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK)
+			adjusted_mode->crtc_hdisplay -=
+						intel_dsi->pixel_overlap;
+		adjusted_mode->crtc_htotal *= 2;
+	}
+	adjusted_mode->crtc_hblank_start = adjusted_mode->crtc_hdisplay;
+	adjusted_mode->crtc_hblank_end = adjusted_mode->crtc_htotal;
+
+	if (intel_dsi->operation_mode == INTEL_DSI_VIDEO_MODE) {
+		if (intel_dsi->dual_link) {
+			adjusted_mode->crtc_hsync_start *= 2;
+			adjusted_mode->crtc_hsync_end *= 2;
+		}
+	}
+	adjusted_mode->crtc_vblank_start = adjusted_mode->crtc_vdisplay;
+	adjusted_mode->crtc_vblank_end = adjusted_mode->crtc_vtotal;
+}
+
+static bool gen11_dsi_is_periodic_cmd_mode(struct intel_dsi *intel_dsi)
+{
+	struct drm_device *dev = intel_dsi->base.base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	enum transcoder dsi_trans;
+	u32 val;
+
+	if (intel_dsi->ports == BIT(PORT_B))
+		dsi_trans = TRANSCODER_DSI_1;
+	else
+		dsi_trans = TRANSCODER_DSI_0;
+
+	val = intel_de_read(dev_priv, DSI_TRANS_FUNC_CONF(dsi_trans));
+	return (val & DSI_PERIODIC_FRAME_UPDATE_ENABLE);
+}
+
+static void gen11_dsi_get_cmd_mode_config(struct intel_dsi *intel_dsi,
+					  struct intel_crtc_state *pipe_config)
+{
+	if (intel_dsi->ports == (BIT(PORT_B) | BIT(PORT_A)))
+		pipe_config->mode_flags |= I915_MODE_FLAG_DSI_USE_TE1 |
+					    I915_MODE_FLAG_DSI_USE_TE0;
+	else if (intel_dsi->ports == BIT(PORT_B))
+		pipe_config->mode_flags |= I915_MODE_FLAG_DSI_USE_TE1;
+	else
+		pipe_config->mode_flags |= I915_MODE_FLAG_DSI_USE_TE0;
+}
+
+static void gen11_dsi_get_config(struct intel_encoder *encoder,
+				 struct intel_crtc_state *pipe_config)
+{
+	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+
+	intel_ddi_get_clock(encoder, pipe_config, icl_ddi_combo_get_pll(encoder));
+
+	pipe_config->hw.adjusted_mode.crtc_clock = intel_dsi->pclk;
+	if (intel_dsi->dual_link)
+		pipe_config->hw.adjusted_mode.crtc_clock *= 2;
+
+	gen11_dsi_get_timings(encoder, pipe_config);
+	pipe_config->output_types |= BIT(INTEL_OUTPUT_DSI);
+	pipe_config->pipe_bpp = bdw_get_pipemisc_bpp(crtc);
+
+	/* Get the details on which TE should be enabled */
+	if (is_cmd_mode(intel_dsi))
+		gen11_dsi_get_cmd_mode_config(intel_dsi, pipe_config);
+
+	if (gen11_dsi_is_periodic_cmd_mode(intel_dsi))
+		pipe_config->mode_flags |= I915_MODE_FLAG_DSI_PERIODIC_CMD_MODE;
+}
+
+static void gen11_dsi_sync_state(struct intel_encoder *encoder,
+				 const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *intel_crtc;
+	enum pipe pipe;
+
+	if (!crtc_state)
+		return;
+
+	intel_crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	pipe = intel_crtc->pipe;
+
+	/* wa verify 1409054076:icl,jsl,ehl */
+	if (DISPLAY_VER(dev_priv) == 11 && pipe == PIPE_B &&
+	    !(intel_de_read(dev_priv, CHICKEN_PAR1_1) & IGNORE_KVMR_PIPE_A))
+		drm_dbg_kms(&dev_priv->drm,
+			    "[ENCODER:%d:%s] BIOS left IGNORE_KVMR_PIPE_A cleared with pipe B enabled\n",
+			    encoder->base.base.id,
+			    encoder->base.name);
+}
+
+static int gen11_dsi_dsc_compute_config(struct intel_encoder *encoder,
+					struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config;
+	int dsc_max_bpc = DISPLAY_VER(dev_priv) >= 12 ? 12 : 10;
+	bool use_dsc;
+	int ret;
+
+	use_dsc = intel_bios_get_dsc_params(encoder, crtc_state, dsc_max_bpc);
+	if (!use_dsc)
+		return 0;
+
+	if (crtc_state->pipe_bpp < 8 * 3)
+		return -EINVAL;
+
+	/* FIXME: split only when necessary */
+	if (crtc_state->dsc.slice_count > 1)
+		crtc_state->dsc.dsc_split = true;
+
+	vdsc_cfg->convert_rgb = true;
+
+	/* FIXME: initialize from VBT */
+	vdsc_cfg->rc_model_size = DSC_RC_MODEL_SIZE_CONST;
+
+	vdsc_cfg->pic_height = crtc_state->hw.adjusted_mode.crtc_vdisplay;
+
+	ret = intel_dsc_compute_params(crtc_state);
+	if (ret)
+		return ret;
+
+	/* DSI specific sanity checks on the common code */
+	drm_WARN_ON(&dev_priv->drm, vdsc_cfg->vbr_enable);
+	drm_WARN_ON(&dev_priv->drm, vdsc_cfg->simple_422);
+	drm_WARN_ON(&dev_priv->drm,
+		    vdsc_cfg->pic_width % vdsc_cfg->slice_width);
+	drm_WARN_ON(&dev_priv->drm, vdsc_cfg->slice_height < 8);
+	drm_WARN_ON(&dev_priv->drm,
+		    vdsc_cfg->pic_height % vdsc_cfg->slice_height);
+
+	ret = drm_dsc_compute_rc_parameters(vdsc_cfg);
+	if (ret)
+		return ret;
+
+	crtc_state->dsc.compression_enable = true;
+
+	return 0;
+}
+
+static int gen11_dsi_compute_config(struct intel_encoder *encoder,
+				    struct intel_crtc_state *pipe_config,
+				    struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = container_of(encoder, struct intel_dsi,
+						   base);
+	struct intel_connector *intel_connector = intel_dsi->attached_connector;
+	struct drm_display_mode *adjusted_mode =
+		&pipe_config->hw.adjusted_mode;
+	int ret;
+
+	pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
+
+	ret = intel_panel_compute_config(intel_connector, adjusted_mode);
+	if (ret)
+		return ret;
+
+	ret = intel_panel_fitting(pipe_config, conn_state);
+	if (ret)
+		return ret;
+
+	adjusted_mode->flags = 0;
+
+	/* Dual link goes to trancoder DSI'0' */
+	if (intel_dsi->ports == BIT(PORT_B))
+		pipe_config->cpu_transcoder = TRANSCODER_DSI_1;
+	else
+		pipe_config->cpu_transcoder = TRANSCODER_DSI_0;
+
+	if (intel_dsi->pixel_format == MIPI_DSI_FMT_RGB888)
+		pipe_config->pipe_bpp = 24;
+	else
+		pipe_config->pipe_bpp = 18;
+
+	pipe_config->clock_set = true;
+
+	if (gen11_dsi_dsc_compute_config(encoder, pipe_config))
+		drm_dbg_kms(&i915->drm, "Attempting to use DSC failed\n");
+
+	pipe_config->port_clock = afe_clk(encoder, pipe_config) / 5;
+
+	/*
+	 * In case of TE GATE cmd mode, we
+	 * receive TE from the slave if
+	 * dual link is enabled
+	 */
+	if (is_cmd_mode(intel_dsi))
+		gen11_dsi_get_cmd_mode_config(intel_dsi, pipe_config);
+
+	return 0;
+}
+
+static void gen11_dsi_get_power_domains(struct intel_encoder *encoder,
+					struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+
+	get_dsi_io_power_domains(i915,
+				 enc_to_intel_dsi(encoder));
+}
+
+static bool gen11_dsi_get_hw_state(struct intel_encoder *encoder,
+				   enum pipe *pipe)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	enum transcoder dsi_trans;
+	intel_wakeref_t wakeref;
+	enum port port;
+	bool ret = false;
+	u32 tmp;
+
+	wakeref = intel_display_power_get_if_enabled(dev_priv,
+						     encoder->power_domain);
+	if (!wakeref)
+		return false;
+
+	for_each_dsi_port(port, intel_dsi->ports) {
+		dsi_trans = dsi_port_to_transcoder(port);
+		tmp = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans));
+		switch (tmp & TRANS_DDI_EDP_INPUT_MASK) {
+		case TRANS_DDI_EDP_INPUT_A_ON:
+			*pipe = PIPE_A;
+			break;
+		case TRANS_DDI_EDP_INPUT_B_ONOFF:
+			*pipe = PIPE_B;
+			break;
+		case TRANS_DDI_EDP_INPUT_C_ONOFF:
+			*pipe = PIPE_C;
+			break;
+		case TRANS_DDI_EDP_INPUT_D_ONOFF:
+			*pipe = PIPE_D;
+			break;
+		default:
+			drm_err(&dev_priv->drm, "Invalid PIPE input\n");
+			goto out;
+		}
+
+		tmp = intel_de_read(dev_priv, PIPECONF(dsi_trans));
+		ret = tmp & PIPECONF_ENABLE;
+	}
+out:
+	intel_display_power_put(dev_priv, encoder->power_domain, wakeref);
+	return ret;
+}
+
+static bool gen11_dsi_initial_fastset_check(struct intel_encoder *encoder,
+					    struct intel_crtc_state *crtc_state)
+{
+	if (crtc_state->dsc.compression_enable) {
+		drm_dbg_kms(encoder->base.dev, "Forcing full modeset due to DSC being enabled\n");
+		crtc_state->uapi.mode_changed = true;
+
+		return false;
+	}
+
+	return true;
+}
+
+static void gen11_dsi_encoder_destroy(struct drm_encoder *encoder)
+{
+	intel_encoder_destroy(encoder);
+}
+
+static const struct drm_encoder_funcs gen11_dsi_encoder_funcs = {
+	.destroy = gen11_dsi_encoder_destroy,
+};
+
+static const struct drm_connector_funcs gen11_dsi_connector_funcs = {
+	.detect = intel_panel_detect,
+	.late_register = intel_connector_register,
+	.early_unregister = intel_connector_unregister,
+	.destroy = intel_connector_destroy,
+	.fill_modes = drm_helper_probe_single_connector_modes,
+	.atomic_get_property = intel_digital_connector_atomic_get_property,
+	.atomic_set_property = intel_digital_connector_atomic_set_property,
+	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+	.atomic_duplicate_state = intel_digital_connector_duplicate_state,
+};
+
+static const struct drm_connector_helper_funcs gen11_dsi_connector_helper_funcs = {
+	.get_modes = intel_dsi_get_modes,
+	.mode_valid = gen11_dsi_mode_valid,
+	.atomic_check = intel_digital_connector_atomic_check,
+};
+
+static int gen11_dsi_host_attach(struct mipi_dsi_host *host,
+				 struct mipi_dsi_device *dsi)
+{
+	return 0;
+}
+
+static int gen11_dsi_host_detach(struct mipi_dsi_host *host,
+				 struct mipi_dsi_device *dsi)
+{
+	return 0;
+}
+
+static ssize_t gen11_dsi_host_transfer(struct mipi_dsi_host *host,
+				       const struct mipi_dsi_msg *msg)
+{
+	struct intel_dsi_host *intel_dsi_host = to_intel_dsi_host(host);
+	struct mipi_dsi_packet dsi_pkt;
+	ssize_t ret;
+	bool enable_lpdt = false;
+
+	ret = mipi_dsi_create_packet(&dsi_pkt, msg);
+	if (ret < 0)
+		return ret;
+
+	if (msg->flags & MIPI_DSI_MSG_USE_LPM)
+		enable_lpdt = true;
+
+	/* only long packet contains payload */
+	if (mipi_dsi_packet_format_is_long(msg->type)) {
+		ret = dsi_send_pkt_payld(intel_dsi_host, &dsi_pkt);
+		if (ret < 0)
+			return ret;
+	}
+
+	/* send packet header */
+	ret  = dsi_send_pkt_hdr(intel_dsi_host, &dsi_pkt, enable_lpdt);
+	if (ret < 0)
+		return ret;
+
+	//TODO: add payload receive code if needed
+
+	ret = sizeof(dsi_pkt.header) + dsi_pkt.payload_length;
+
+	return ret;
+}
+
+static const struct mipi_dsi_host_ops gen11_dsi_host_ops = {
+	.attach = gen11_dsi_host_attach,
+	.detach = gen11_dsi_host_detach,
+	.transfer = gen11_dsi_host_transfer,
+};
+
+#define ICL_PREPARE_CNT_MAX	0x7
+#define ICL_CLK_ZERO_CNT_MAX	0xf
+#define ICL_TRAIL_CNT_MAX	0x7
+#define ICL_TCLK_PRE_CNT_MAX	0x3
+#define ICL_TCLK_POST_CNT_MAX	0x7
+#define ICL_HS_ZERO_CNT_MAX	0xf
+#define ICL_EXIT_ZERO_CNT_MAX	0x7
+
+static void icl_dphy_param_init(struct intel_dsi *intel_dsi)
+{
+	struct drm_device *dev = intel_dsi->base.base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_connector *connector = intel_dsi->attached_connector;
+	struct mipi_config *mipi_config = connector->panel.vbt.dsi.config;
+	u32 tlpx_ns;
+	u32 prepare_cnt, exit_zero_cnt, clk_zero_cnt, trail_cnt;
+	u32 ths_prepare_ns, tclk_trail_ns;
+	u32 hs_zero_cnt;
+	u32 tclk_pre_cnt, tclk_post_cnt;
+
+	tlpx_ns = intel_dsi_tlpx_ns(intel_dsi);
+
+	tclk_trail_ns = max(mipi_config->tclk_trail, mipi_config->ths_trail);
+	ths_prepare_ns = max(mipi_config->ths_prepare,
+			     mipi_config->tclk_prepare);
+
+	/*
+	 * prepare cnt in escape clocks
+	 * this field represents a hexadecimal value with a precision
+	 * of 1.2 – i.e. the most significant bit is the integer
+	 * and the least significant 2 bits are fraction bits.
+	 * so, the field can represent a range of 0.25 to 1.75
+	 */
+	prepare_cnt = DIV_ROUND_UP(ths_prepare_ns * 4, tlpx_ns);
+	if (prepare_cnt > ICL_PREPARE_CNT_MAX) {
+		drm_dbg_kms(&dev_priv->drm, "prepare_cnt out of range (%d)\n",
+			    prepare_cnt);
+		prepare_cnt = ICL_PREPARE_CNT_MAX;
+	}
+
+	/* clk zero count in escape clocks */
+	clk_zero_cnt = DIV_ROUND_UP(mipi_config->tclk_prepare_clkzero -
+				    ths_prepare_ns, tlpx_ns);
+	if (clk_zero_cnt > ICL_CLK_ZERO_CNT_MAX) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "clk_zero_cnt out of range (%d)\n", clk_zero_cnt);
+		clk_zero_cnt = ICL_CLK_ZERO_CNT_MAX;
+	}
+
+	/* trail cnt in escape clocks*/
+	trail_cnt = DIV_ROUND_UP(tclk_trail_ns, tlpx_ns);
+	if (trail_cnt > ICL_TRAIL_CNT_MAX) {
+		drm_dbg_kms(&dev_priv->drm, "trail_cnt out of range (%d)\n",
+			    trail_cnt);
+		trail_cnt = ICL_TRAIL_CNT_MAX;
+	}
+
+	/* tclk pre count in escape clocks */
+	tclk_pre_cnt = DIV_ROUND_UP(mipi_config->tclk_pre, tlpx_ns);
+	if (tclk_pre_cnt > ICL_TCLK_PRE_CNT_MAX) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "tclk_pre_cnt out of range (%d)\n", tclk_pre_cnt);
+		tclk_pre_cnt = ICL_TCLK_PRE_CNT_MAX;
+	}
+
+	/* tclk post count in escape clocks */
+	tclk_post_cnt = DIV_ROUND_UP(mipi_config->tclk_post, tlpx_ns);
+	if (tclk_post_cnt > ICL_TCLK_POST_CNT_MAX) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "tclk_post_cnt out of range (%d)\n",
+			    tclk_post_cnt);
+		tclk_post_cnt = ICL_TCLK_POST_CNT_MAX;
+	}
+
+	/* hs zero cnt in escape clocks */
+	hs_zero_cnt = DIV_ROUND_UP(mipi_config->ths_prepare_hszero -
+				   ths_prepare_ns, tlpx_ns);
+	if (hs_zero_cnt > ICL_HS_ZERO_CNT_MAX) {
+		drm_dbg_kms(&dev_priv->drm, "hs_zero_cnt out of range (%d)\n",
+			    hs_zero_cnt);
+		hs_zero_cnt = ICL_HS_ZERO_CNT_MAX;
+	}
+
+	/* hs exit zero cnt in escape clocks */
+	exit_zero_cnt = DIV_ROUND_UP(mipi_config->ths_exit, tlpx_ns);
+	if (exit_zero_cnt > ICL_EXIT_ZERO_CNT_MAX) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "exit_zero_cnt out of range (%d)\n",
+			    exit_zero_cnt);
+		exit_zero_cnt = ICL_EXIT_ZERO_CNT_MAX;
+	}
+
+	/* clock lane dphy timings */
+	intel_dsi->dphy_reg = (CLK_PREPARE_OVERRIDE |
+			       CLK_PREPARE(prepare_cnt) |
+			       CLK_ZERO_OVERRIDE |
+			       CLK_ZERO(clk_zero_cnt) |
+			       CLK_PRE_OVERRIDE |
+			       CLK_PRE(tclk_pre_cnt) |
+			       CLK_POST_OVERRIDE |
+			       CLK_POST(tclk_post_cnt) |
+			       CLK_TRAIL_OVERRIDE |
+			       CLK_TRAIL(trail_cnt));
+
+	/* data lanes dphy timings */
+	intel_dsi->dphy_data_lane_reg = (HS_PREPARE_OVERRIDE |
+					 HS_PREPARE(prepare_cnt) |
+					 HS_ZERO_OVERRIDE |
+					 HS_ZERO(hs_zero_cnt) |
+					 HS_TRAIL_OVERRIDE |
+					 HS_TRAIL(trail_cnt) |
+					 HS_EXIT_OVERRIDE |
+					 HS_EXIT(exit_zero_cnt));
+
+	intel_dsi_log_params(intel_dsi);
+}
+
+static void icl_dsi_add_properties(struct intel_connector *connector)
+{
+	const struct drm_display_mode *fixed_mode =
+		intel_panel_preferred_fixed_mode(connector);
+	u32 allowed_scalers;
+
+	allowed_scalers = BIT(DRM_MODE_SCALE_ASPECT) |
+			   BIT(DRM_MODE_SCALE_FULLSCREEN) |
+			   BIT(DRM_MODE_SCALE_CENTER);
+
+	drm_connector_attach_scaling_mode_property(&connector->base,
+						   allowed_scalers);
+
+	connector->base.state->scaling_mode = DRM_MODE_SCALE_ASPECT;
+
+	drm_connector_set_panel_orientation_with_quirk(&connector->base,
+						       intel_dsi_get_panel_orientation(connector),
+						       fixed_mode->hdisplay,
+						       fixed_mode->vdisplay);
+}
+
+void icl_dsi_init(struct drm_i915_private *dev_priv)
+{
+	struct drm_device *dev = &dev_priv->drm;
+	struct intel_dsi *intel_dsi;
+	struct intel_encoder *encoder;
+	struct intel_connector *intel_connector;
+	struct drm_connector *connector;
+	enum port port;
+
+	if (!intel_bios_is_dsi_present(dev_priv, &port))
+		return;
+
+	intel_dsi = kzalloc(sizeof(*intel_dsi), GFP_KERNEL);
+	if (!intel_dsi)
+		return;
+
+	intel_connector = intel_connector_alloc();
+	if (!intel_connector) {
+		kfree(intel_dsi);
+		return;
+	}
+
+	encoder = &intel_dsi->base;
+	intel_dsi->attached_connector = intel_connector;
+	connector = &intel_connector->base;
+
+	/* register DSI encoder with DRM subsystem */
+	drm_encoder_init(dev, &encoder->base, &gen11_dsi_encoder_funcs,
+			 DRM_MODE_ENCODER_DSI, "DSI %c", port_name(port));
+
+	encoder->pre_pll_enable = gen11_dsi_pre_pll_enable;
+	encoder->pre_enable = gen11_dsi_pre_enable;
+	encoder->enable = gen11_dsi_enable;
+	encoder->disable = gen11_dsi_disable;
+	encoder->post_disable = gen11_dsi_post_disable;
+	encoder->port = port;
+	encoder->get_config = gen11_dsi_get_config;
+	encoder->sync_state = gen11_dsi_sync_state;
+	encoder->update_pipe = intel_backlight_update;
+	encoder->compute_config = gen11_dsi_compute_config;
+	encoder->get_hw_state = gen11_dsi_get_hw_state;
+	encoder->initial_fastset_check = gen11_dsi_initial_fastset_check;
+	encoder->type = INTEL_OUTPUT_DSI;
+	encoder->cloneable = 0;
+	encoder->pipe_mask = ~0;
+	encoder->power_domain = POWER_DOMAIN_PORT_DSI;
+	encoder->get_power_domains = gen11_dsi_get_power_domains;
+	encoder->disable_clock = gen11_dsi_gate_clocks;
+	encoder->is_clock_enabled = gen11_dsi_is_clock_enabled;
+
+	/* register DSI connector with DRM subsystem */
+	drm_connector_init(dev, connector, &gen11_dsi_connector_funcs,
+			   DRM_MODE_CONNECTOR_DSI);
+	drm_connector_helper_add(connector, &gen11_dsi_connector_helper_funcs);
+	connector->display_info.subpixel_order = SubPixelHorizontalRGB;
+	connector->interlace_allowed = false;
+	connector->doublescan_allowed = false;
+	intel_connector->get_hw_state = intel_connector_get_hw_state;
+
+	/* attach connector to encoder */
+	intel_connector_attach_encoder(intel_connector, encoder);
+
+	encoder->devdata = intel_bios_encoder_data_lookup(dev_priv, port);
+	intel_bios_init_panel_late(dev_priv, &intel_connector->panel, encoder->devdata, NULL);
+
+	mutex_lock(&dev->mode_config.mutex);
+	intel_panel_add_vbt_lfp_fixed_mode(intel_connector);
+	mutex_unlock(&dev->mode_config.mutex);
+
+	if (!intel_panel_preferred_fixed_mode(intel_connector)) {
+		drm_err(&dev_priv->drm, "DSI fixed mode info missing\n");
+		goto err;
+	}
+
+	intel_panel_init(intel_connector);
+
+	intel_backlight_setup(intel_connector, INVALID_PIPE);
+
+	if (intel_connector->panel.vbt.dsi.config->dual_link)
+		intel_dsi->ports = BIT(PORT_A) | BIT(PORT_B);
+	else
+		intel_dsi->ports = BIT(port);
+
+	if (drm_WARN_ON(&dev_priv->drm, intel_connector->panel.vbt.dsi.bl_ports & ~intel_dsi->ports))
+		intel_connector->panel.vbt.dsi.bl_ports &= intel_dsi->ports;
+
+	if (drm_WARN_ON(&dev_priv->drm, intel_connector->panel.vbt.dsi.cabc_ports & ~intel_dsi->ports))
+		intel_connector->panel.vbt.dsi.cabc_ports &= intel_dsi->ports;
+
+	for_each_dsi_port(port, intel_dsi->ports) {
+		struct intel_dsi_host *host;
+
+		host = intel_dsi_host_init(intel_dsi, &gen11_dsi_host_ops, port);
+		if (!host)
+			goto err;
+
+		intel_dsi->dsi_hosts[port] = host;
+	}
+
+	if (!intel_dsi_vbt_init(intel_dsi, MIPI_DSI_GENERIC_PANEL_ID)) {
+		drm_dbg_kms(&dev_priv->drm, "no device found\n");
+		goto err;
+	}
+
+	icl_dphy_param_init(intel_dsi);
+
+	icl_dsi_add_properties(intel_connector);
+	return;
+
+err:
+	drm_connector_cleanup(connector);
+	drm_encoder_cleanup(&encoder->base);
+	kfree(intel_dsi);
+	kfree(intel_connector);
+}
diff --git a/drivers/gpu/drm/i915/display/icl_dsi.h b/drivers/gpu/drm/i915/display/icl_dsi.h
new file mode 100644
index 000000000..b4861b56b
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/icl_dsi.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#ifndef __ICL_DSI_H__
+#define __ICL_DSI_H__
+
+struct drm_i915_private;
+struct intel_crtc_state;
+
+void icl_dsi_init(struct drm_i915_private *i915);
+void icl_dsi_frame_update(struct intel_crtc_state *crtc_state);
+
+#endif /* __ICL_DSI_H__ */
diff --git a/drivers/gpu/drm/i915/display/icl_dsi_regs.h b/drivers/gpu/drm/i915/display/icl_dsi_regs.h
new file mode 100644
index 000000000..f78f28b8d
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/icl_dsi_regs.h
@@ -0,0 +1,342 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#ifndef __ICL_DSI_REGS_H__
+#define __ICL_DSI_REGS_H__
+
+#include "i915_reg_defs.h"
+
+/* Gen11 DSI */
+#define _MMIO_DSI(tc, dsi0, dsi1)	_MMIO_TRANS((tc) - TRANSCODER_DSI_0, \
+						    dsi0, dsi1)
+#define _ICL_DSI_ESC_CLK_DIV0		0x6b090
+#define _ICL_DSI_ESC_CLK_DIV1		0x6b890
+#define ICL_DSI_ESC_CLK_DIV(port)	_MMIO_PORT((port),	\
+							_ICL_DSI_ESC_CLK_DIV0, \
+							_ICL_DSI_ESC_CLK_DIV1)
+#define _ICL_DPHY_ESC_CLK_DIV0		0x162190
+#define _ICL_DPHY_ESC_CLK_DIV1		0x6C190
+#define ICL_DPHY_ESC_CLK_DIV(port)	_MMIO_PORT((port),	\
+						_ICL_DPHY_ESC_CLK_DIV0, \
+						_ICL_DPHY_ESC_CLK_DIV1)
+#define  ICL_BYTE_CLK_PER_ESC_CLK_MASK		(0x1f << 16)
+#define  ICL_BYTE_CLK_PER_ESC_CLK_SHIFT	16
+#define  ICL_ESC_CLK_DIV_MASK			0x1ff
+#define  ICL_ESC_CLK_DIV_SHIFT			0
+#define DSI_MAX_ESC_CLK			20000		/* in KHz */
+
+#define _ADL_MIPIO_REG			0x180
+#define ADL_MIPIO_DW(port, dw)		_MMIO(_ICL_COMBOPHY(port) + _ADL_MIPIO_REG + 4 * (dw))
+#define   TX_ESC_CLK_DIV_PHY_SEL	REGBIT(16)
+#define   TX_ESC_CLK_DIV_PHY_MASK	REG_GENMASK(23, 16)
+#define   TX_ESC_CLK_DIV_PHY		REG_FIELD_PREP(TX_ESC_CLK_DIV_PHY_MASK, 0x7f)
+
+#define _DSI_CMD_FRMCTL_0		0x6b034
+#define _DSI_CMD_FRMCTL_1		0x6b834
+#define DSI_CMD_FRMCTL(port)		_MMIO_PORT(port,	\
+						   _DSI_CMD_FRMCTL_0,\
+						   _DSI_CMD_FRMCTL_1)
+#define   DSI_FRAME_UPDATE_REQUEST		(1 << 31)
+#define   DSI_PERIODIC_FRAME_UPDATE_ENABLE	(1 << 29)
+#define   DSI_NULL_PACKET_ENABLE		(1 << 28)
+#define   DSI_FRAME_IN_PROGRESS			(1 << 0)
+
+#define _DSI_INTR_MASK_REG_0		0x6b070
+#define _DSI_INTR_MASK_REG_1		0x6b870
+#define DSI_INTR_MASK_REG(port)		_MMIO_PORT(port,	\
+						   _DSI_INTR_MASK_REG_0,\
+						   _DSI_INTR_MASK_REG_1)
+
+#define _DSI_INTR_IDENT_REG_0		0x6b074
+#define _DSI_INTR_IDENT_REG_1		0x6b874
+#define DSI_INTR_IDENT_REG(port)	_MMIO_PORT(port,	\
+						   _DSI_INTR_IDENT_REG_0,\
+						   _DSI_INTR_IDENT_REG_1)
+#define   DSI_TE_EVENT				(1 << 31)
+#define   DSI_RX_DATA_OR_BTA_TERMINATED		(1 << 30)
+#define   DSI_TX_DATA				(1 << 29)
+#define   DSI_ULPS_ENTRY_DONE			(1 << 28)
+#define   DSI_NON_TE_TRIGGER_RECEIVED		(1 << 27)
+#define   DSI_HOST_CHKSUM_ERROR			(1 << 26)
+#define   DSI_HOST_MULTI_ECC_ERROR		(1 << 25)
+#define   DSI_HOST_SINGL_ECC_ERROR		(1 << 24)
+#define   DSI_HOST_CONTENTION_DETECTED		(1 << 23)
+#define   DSI_HOST_FALSE_CONTROL_ERROR		(1 << 22)
+#define   DSI_HOST_TIMEOUT_ERROR		(1 << 21)
+#define   DSI_HOST_LOW_POWER_TX_SYNC_ERROR	(1 << 20)
+#define   DSI_HOST_ESCAPE_MODE_ENTRY_ERROR	(1 << 19)
+#define   DSI_FRAME_UPDATE_DONE			(1 << 16)
+#define   DSI_PROTOCOL_VIOLATION_REPORTED	(1 << 15)
+#define   DSI_INVALID_TX_LENGTH			(1 << 13)
+#define   DSI_INVALID_VC			(1 << 12)
+#define   DSI_INVALID_DATA_TYPE			(1 << 11)
+#define   DSI_PERIPHERAL_CHKSUM_ERROR		(1 << 10)
+#define   DSI_PERIPHERAL_MULTI_ECC_ERROR	(1 << 9)
+#define   DSI_PERIPHERAL_SINGLE_ECC_ERROR	(1 << 8)
+#define   DSI_PERIPHERAL_CONTENTION_DETECTED	(1 << 7)
+#define   DSI_PERIPHERAL_FALSE_CTRL_ERROR	(1 << 6)
+#define   DSI_PERIPHERAL_TIMEOUT_ERROR		(1 << 5)
+#define   DSI_PERIPHERAL_LP_TX_SYNC_ERROR	(1 << 4)
+#define   DSI_PERIPHERAL_ESC_MODE_ENTRY_CMD_ERR	(1 << 3)
+#define   DSI_EOT_SYNC_ERROR			(1 << 2)
+#define   DSI_SOT_SYNC_ERROR			(1 << 1)
+#define   DSI_SOT_ERROR				(1 << 0)
+
+/* ICL DSI MODE control */
+#define _ICL_DSI_IO_MODECTL_0				0x6B094
+#define _ICL_DSI_IO_MODECTL_1				0x6B894
+#define ICL_DSI_IO_MODECTL(port)	_MMIO_PORT(port,	\
+						    _ICL_DSI_IO_MODECTL_0, \
+						    _ICL_DSI_IO_MODECTL_1)
+#define  COMBO_PHY_MODE_DSI				(1 << 0)
+
+/* TGL DSI Chicken register */
+#define _TGL_DSI_CHKN_REG_0			0x6B0C0
+#define _TGL_DSI_CHKN_REG_1			0x6B8C0
+#define TGL_DSI_CHKN_REG(port)		_MMIO_PORT(port,	\
+						    _TGL_DSI_CHKN_REG_0, \
+						    _TGL_DSI_CHKN_REG_1)
+#define TGL_DSI_CHKN_LSHS_GB_MASK		REG_GENMASK(15, 12)
+#define TGL_DSI_CHKN_LSHS_GB(byte_clocks)	REG_FIELD_PREP(TGL_DSI_CHKN_LSHS_GB_MASK, \
+							       (byte_clocks))
+#define _ICL_DSI_T_INIT_MASTER_0	0x6b088
+#define _ICL_DSI_T_INIT_MASTER_1	0x6b888
+#define ICL_DSI_T_INIT_MASTER(port)	_MMIO_PORT(port,	\
+						   _ICL_DSI_T_INIT_MASTER_0,\
+						   _ICL_DSI_T_INIT_MASTER_1)
+#define   DSI_T_INIT_MASTER_MASK	REG_GENMASK(15, 0)
+
+#define _DPHY_CLK_TIMING_PARAM_0	0x162180
+#define _DPHY_CLK_TIMING_PARAM_1	0x6c180
+#define DPHY_CLK_TIMING_PARAM(port)	_MMIO_PORT(port,	\
+						   _DPHY_CLK_TIMING_PARAM_0,\
+						   _DPHY_CLK_TIMING_PARAM_1)
+#define _DSI_CLK_TIMING_PARAM_0		0x6b080
+#define _DSI_CLK_TIMING_PARAM_1		0x6b880
+#define DSI_CLK_TIMING_PARAM(port)	_MMIO_PORT(port,	\
+						   _DSI_CLK_TIMING_PARAM_0,\
+						   _DSI_CLK_TIMING_PARAM_1)
+#define  CLK_PREPARE_OVERRIDE		(1 << 31)
+#define  CLK_PREPARE(x)		((x) << 28)
+#define  CLK_PREPARE_MASK		(0x7 << 28)
+#define  CLK_PREPARE_SHIFT		28
+#define  CLK_ZERO_OVERRIDE		(1 << 27)
+#define  CLK_ZERO(x)			((x) << 20)
+#define  CLK_ZERO_MASK			(0xf << 20)
+#define  CLK_ZERO_SHIFT		20
+#define  CLK_PRE_OVERRIDE		(1 << 19)
+#define  CLK_PRE(x)			((x) << 16)
+#define  CLK_PRE_MASK			(0x3 << 16)
+#define  CLK_PRE_SHIFT			16
+#define  CLK_POST_OVERRIDE		(1 << 15)
+#define  CLK_POST(x)			((x) << 8)
+#define  CLK_POST_MASK			(0x7 << 8)
+#define  CLK_POST_SHIFT		8
+#define  CLK_TRAIL_OVERRIDE		(1 << 7)
+#define  CLK_TRAIL(x)			((x) << 0)
+#define  CLK_TRAIL_MASK		(0xf << 0)
+#define  CLK_TRAIL_SHIFT		0
+
+#define _DPHY_DATA_TIMING_PARAM_0	0x162184
+#define _DPHY_DATA_TIMING_PARAM_1	0x6c184
+#define DPHY_DATA_TIMING_PARAM(port)	_MMIO_PORT(port,	\
+						   _DPHY_DATA_TIMING_PARAM_0,\
+						   _DPHY_DATA_TIMING_PARAM_1)
+#define _DSI_DATA_TIMING_PARAM_0	0x6B084
+#define _DSI_DATA_TIMING_PARAM_1	0x6B884
+#define DSI_DATA_TIMING_PARAM(port)	_MMIO_PORT(port,	\
+						   _DSI_DATA_TIMING_PARAM_0,\
+						   _DSI_DATA_TIMING_PARAM_1)
+#define  HS_PREPARE_OVERRIDE		(1 << 31)
+#define  HS_PREPARE(x)			((x) << 24)
+#define  HS_PREPARE_MASK		(0x7 << 24)
+#define  HS_PREPARE_SHIFT		24
+#define  HS_ZERO_OVERRIDE		(1 << 23)
+#define  HS_ZERO(x)			((x) << 16)
+#define  HS_ZERO_MASK			(0xf << 16)
+#define  HS_ZERO_SHIFT			16
+#define  HS_TRAIL_OVERRIDE		(1 << 15)
+#define  HS_TRAIL(x)			((x) << 8)
+#define  HS_TRAIL_MASK			(0x7 << 8)
+#define  HS_TRAIL_SHIFT		8
+#define  HS_EXIT_OVERRIDE		(1 << 7)
+#define  HS_EXIT(x)			((x) << 0)
+#define  HS_EXIT_MASK			(0x7 << 0)
+#define  HS_EXIT_SHIFT			0
+
+#define _DPHY_TA_TIMING_PARAM_0		0x162188
+#define _DPHY_TA_TIMING_PARAM_1		0x6c188
+#define DPHY_TA_TIMING_PARAM(port)	_MMIO_PORT(port,	\
+						   _DPHY_TA_TIMING_PARAM_0,\
+						   _DPHY_TA_TIMING_PARAM_1)
+#define _DSI_TA_TIMING_PARAM_0		0x6b098
+#define _DSI_TA_TIMING_PARAM_1		0x6b898
+#define DSI_TA_TIMING_PARAM(port)	_MMIO_PORT(port,	\
+						   _DSI_TA_TIMING_PARAM_0,\
+						   _DSI_TA_TIMING_PARAM_1)
+#define  TA_SURE_OVERRIDE		(1 << 31)
+#define  TA_SURE(x)			((x) << 16)
+#define  TA_SURE_MASK			(0x1f << 16)
+#define  TA_SURE_SHIFT			16
+#define  TA_GO_OVERRIDE		(1 << 15)
+#define  TA_GO(x)			((x) << 8)
+#define  TA_GO_MASK			(0xf << 8)
+#define  TA_GO_SHIFT			8
+#define  TA_GET_OVERRIDE		(1 << 7)
+#define  TA_GET(x)			((x) << 0)
+#define  TA_GET_MASK			(0xf << 0)
+#define  TA_GET_SHIFT			0
+
+/* DSI transcoder configuration */
+#define _DSI_TRANS_FUNC_CONF_0		0x6b030
+#define _DSI_TRANS_FUNC_CONF_1		0x6b830
+#define DSI_TRANS_FUNC_CONF(tc)		_MMIO_DSI(tc,	\
+						  _DSI_TRANS_FUNC_CONF_0,\
+						  _DSI_TRANS_FUNC_CONF_1)
+#define  OP_MODE_MASK			(0x3 << 28)
+#define  OP_MODE_SHIFT			28
+#define  CMD_MODE_NO_GATE		(0x0 << 28)
+#define  CMD_MODE_TE_GATE		(0x1 << 28)
+#define  VIDEO_MODE_SYNC_EVENT		(0x2 << 28)
+#define  VIDEO_MODE_SYNC_PULSE		(0x3 << 28)
+#define  TE_SOURCE_GPIO			(1 << 27)
+#define  LINK_READY			(1 << 20)
+#define  PIX_FMT_MASK			(0x3 << 16)
+#define  PIX_FMT_SHIFT			16
+#define  PIX_FMT_RGB565			(0x0 << 16)
+#define  PIX_FMT_RGB666_PACKED		(0x1 << 16)
+#define  PIX_FMT_RGB666_LOOSE		(0x2 << 16)
+#define  PIX_FMT_RGB888			(0x3 << 16)
+#define  PIX_FMT_RGB101010		(0x4 << 16)
+#define  PIX_FMT_RGB121212		(0x5 << 16)
+#define  PIX_FMT_COMPRESSED		(0x6 << 16)
+#define  BGR_TRANSMISSION		(1 << 15)
+#define  PIX_VIRT_CHAN(x)		((x) << 12)
+#define  PIX_VIRT_CHAN_MASK		(0x3 << 12)
+#define  PIX_VIRT_CHAN_SHIFT		12
+#define  PIX_BUF_THRESHOLD_MASK		(0x3 << 10)
+#define  PIX_BUF_THRESHOLD_SHIFT	10
+#define  PIX_BUF_THRESHOLD_1_4		(0x0 << 10)
+#define  PIX_BUF_THRESHOLD_1_2		(0x1 << 10)
+#define  PIX_BUF_THRESHOLD_3_4		(0x2 << 10)
+#define  PIX_BUF_THRESHOLD_FULL		(0x3 << 10)
+#define  CONTINUOUS_CLK_MASK		(0x3 << 8)
+#define  CONTINUOUS_CLK_SHIFT		8
+#define  CLK_ENTER_LP_AFTER_DATA	(0x0 << 8)
+#define  CLK_HS_OR_LP			(0x2 << 8)
+#define  CLK_HS_CONTINUOUS		(0x3 << 8)
+#define  LINK_CALIBRATION_MASK		(0x3 << 4)
+#define  LINK_CALIBRATION_SHIFT		4
+#define  CALIBRATION_DISABLED		(0x0 << 4)
+#define  CALIBRATION_ENABLED_INITIAL_ONLY	(0x2 << 4)
+#define  CALIBRATION_ENABLED_INITIAL_PERIODIC	(0x3 << 4)
+#define  BLANKING_PACKET_ENABLE		(1 << 2)
+#define  S3D_ORIENTATION_LANDSCAPE	(1 << 1)
+#define  EOTP_DISABLED			(1 << 0)
+
+#define _DSI_CMD_RXCTL_0		0x6b0d4
+#define _DSI_CMD_RXCTL_1		0x6b8d4
+#define DSI_CMD_RXCTL(tc)		_MMIO_DSI(tc,	\
+						  _DSI_CMD_RXCTL_0,\
+						  _DSI_CMD_RXCTL_1)
+#define  READ_UNLOADS_DW		(1 << 16)
+#define  RECEIVED_UNASSIGNED_TRIGGER	(1 << 15)
+#define  RECEIVED_ACKNOWLEDGE_TRIGGER	(1 << 14)
+#define  RECEIVED_TEAR_EFFECT_TRIGGER	(1 << 13)
+#define  RECEIVED_RESET_TRIGGER		(1 << 12)
+#define  RECEIVED_PAYLOAD_WAS_LOST	(1 << 11)
+#define  RECEIVED_CRC_WAS_LOST		(1 << 10)
+#define  NUMBER_RX_PLOAD_DW_MASK	(0xff << 0)
+#define  NUMBER_RX_PLOAD_DW_SHIFT	0
+
+#define _DSI_CMD_TXCTL_0		0x6b0d0
+#define _DSI_CMD_TXCTL_1		0x6b8d0
+#define DSI_CMD_TXCTL(tc)		_MMIO_DSI(tc,	\
+						  _DSI_CMD_TXCTL_0,\
+						  _DSI_CMD_TXCTL_1)
+#define  KEEP_LINK_IN_HS		(1 << 24)
+#define  FREE_HEADER_CREDIT_MASK	(0x1f << 8)
+#define  FREE_HEADER_CREDIT_SHIFT	0x8
+#define  FREE_PLOAD_CREDIT_MASK		(0xff << 0)
+#define  FREE_PLOAD_CREDIT_SHIFT	0
+#define  MAX_HEADER_CREDIT		0x10
+#define  MAX_PLOAD_CREDIT		0x40
+
+#define _DSI_CMD_TXHDR_0		0x6b100
+#define _DSI_CMD_TXHDR_1		0x6b900
+#define DSI_CMD_TXHDR(tc)		_MMIO_DSI(tc,	\
+						  _DSI_CMD_TXHDR_0,\
+						  _DSI_CMD_TXHDR_1)
+#define  PAYLOAD_PRESENT		(1 << 31)
+#define  LP_DATA_TRANSFER		(1 << 30)
+#define  VBLANK_FENCE			(1 << 29)
+#define  PARAM_WC_MASK			(0xffff << 8)
+#define  PARAM_WC_LOWER_SHIFT		8
+#define  PARAM_WC_UPPER_SHIFT		16
+#define  VC_MASK			(0x3 << 6)
+#define  VC_SHIFT			6
+#define  DT_MASK			(0x3f << 0)
+#define  DT_SHIFT			0
+
+#define _DSI_CMD_TXPYLD_0		0x6b104
+#define _DSI_CMD_TXPYLD_1		0x6b904
+#define DSI_CMD_TXPYLD(tc)		_MMIO_DSI(tc,	\
+						  _DSI_CMD_TXPYLD_0,\
+						  _DSI_CMD_TXPYLD_1)
+
+#define _DSI_LP_MSG_0			0x6b0d8
+#define _DSI_LP_MSG_1			0x6b8d8
+#define DSI_LP_MSG(tc)			_MMIO_DSI(tc,	\
+						  _DSI_LP_MSG_0,\
+						  _DSI_LP_MSG_1)
+#define  LPTX_IN_PROGRESS		(1 << 17)
+#define  LINK_IN_ULPS			(1 << 16)
+#define  LINK_ULPS_TYPE_LP11		(1 << 8)
+#define  LINK_ENTER_ULPS		(1 << 0)
+
+/* DSI timeout registers */
+#define _DSI_HSTX_TO_0			0x6b044
+#define _DSI_HSTX_TO_1			0x6b844
+#define DSI_HSTX_TO(tc)			_MMIO_DSI(tc,	\
+						  _DSI_HSTX_TO_0,\
+						  _DSI_HSTX_TO_1)
+#define  HSTX_TIMEOUT_VALUE_MASK	(0xffff << 16)
+#define  HSTX_TIMEOUT_VALUE_SHIFT	16
+#define  HSTX_TIMEOUT_VALUE(x)		((x) << 16)
+#define  HSTX_TIMED_OUT			(1 << 0)
+
+#define _DSI_LPRX_HOST_TO_0		0x6b048
+#define _DSI_LPRX_HOST_TO_1		0x6b848
+#define DSI_LPRX_HOST_TO(tc)		_MMIO_DSI(tc,	\
+						  _DSI_LPRX_HOST_TO_0,\
+						  _DSI_LPRX_HOST_TO_1)
+#define  LPRX_TIMED_OUT			(1 << 16)
+#define  LPRX_TIMEOUT_VALUE_MASK	(0xffff << 0)
+#define  LPRX_TIMEOUT_VALUE_SHIFT	0
+#define  LPRX_TIMEOUT_VALUE(x)		((x) << 0)
+
+#define _DSI_PWAIT_TO_0			0x6b040
+#define _DSI_PWAIT_TO_1			0x6b840
+#define DSI_PWAIT_TO(tc)		_MMIO_DSI(tc,	\
+						  _DSI_PWAIT_TO_0,\
+						  _DSI_PWAIT_TO_1)
+#define  PRESET_TIMEOUT_VALUE_MASK	(0xffff << 16)
+#define  PRESET_TIMEOUT_VALUE_SHIFT	16
+#define  PRESET_TIMEOUT_VALUE(x)	((x) << 16)
+#define  PRESPONSE_TIMEOUT_VALUE_MASK	(0xffff << 0)
+#define  PRESPONSE_TIMEOUT_VALUE_SHIFT	0
+#define  PRESPONSE_TIMEOUT_VALUE(x)	((x) << 0)
+
+#define _DSI_TA_TO_0			0x6b04c
+#define _DSI_TA_TO_1			0x6b84c
+#define DSI_TA_TO(tc)			_MMIO_DSI(tc,	\
+						  _DSI_TA_TO_0,\
+						  _DSI_TA_TO_1)
+#define  TA_TIMED_OUT			(1 << 16)
+#define  TA_TIMEOUT_VALUE_MASK		(0xffff << 0)
+#define  TA_TIMEOUT_VALUE_SHIFT		0
+#define  TA_TIMEOUT_VALUE(x)		((x) << 0)
+
+#endif /* __ICL_DSI_REGS_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_acpi.c b/drivers/gpu/drm/i915/display/intel_acpi.c
new file mode 100644
index 000000000..9df78e7ca
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_acpi.c
@@ -0,0 +1,360 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Intel ACPI functions
+ *
+ * _DSM related code stolen from nouveau_acpi.c.
+ */
+
+#include <linux/pci.h>
+#include <linux/acpi.h>
+#include <acpi/video.h>
+
+#include "i915_drv.h"
+#include "intel_acpi.h"
+#include "intel_display_types.h"
+
+#define INTEL_DSM_REVISION_ID 1 /* For Calpella anyway... */
+#define INTEL_DSM_FN_PLATFORM_MUX_INFO 1 /* No args */
+
+static const guid_t intel_dsm_guid =
+	GUID_INIT(0x7ed873d3, 0xc2d0, 0x4e4f,
+		  0xa8, 0x54, 0x0f, 0x13, 0x17, 0xb0, 0x1c, 0x2c);
+
+#define INTEL_DSM_FN_GET_BIOS_DATA_FUNCS_SUPPORTED 0 /* No args */
+
+static const guid_t intel_dsm_guid2 =
+	GUID_INIT(0x3e5b41c6, 0xeb1d, 0x4260,
+		  0x9d, 0x15, 0xc7, 0x1f, 0xba, 0xda, 0xe4, 0x14);
+
+static char *intel_dsm_port_name(u8 id)
+{
+	switch (id) {
+	case 0:
+		return "Reserved";
+	case 1:
+		return "Analog VGA";
+	case 2:
+		return "LVDS";
+	case 3:
+		return "Reserved";
+	case 4:
+		return "HDMI/DVI_B";
+	case 5:
+		return "HDMI/DVI_C";
+	case 6:
+		return "HDMI/DVI_D";
+	case 7:
+		return "DisplayPort_A";
+	case 8:
+		return "DisplayPort_B";
+	case 9:
+		return "DisplayPort_C";
+	case 0xa:
+		return "DisplayPort_D";
+	case 0xb:
+	case 0xc:
+	case 0xd:
+		return "Reserved";
+	case 0xe:
+		return "WiDi";
+	default:
+		return "bad type";
+	}
+}
+
+static char *intel_dsm_mux_type(u8 type)
+{
+	switch (type) {
+	case 0:
+		return "unknown";
+	case 1:
+		return "No MUX, iGPU only";
+	case 2:
+		return "No MUX, dGPU only";
+	case 3:
+		return "MUXed between iGPU and dGPU";
+	default:
+		return "bad type";
+	}
+}
+
+static void intel_dsm_platform_mux_info(acpi_handle dhandle)
+{
+	int i;
+	union acpi_object *pkg, *connector_count;
+
+	pkg = acpi_evaluate_dsm_typed(dhandle, &intel_dsm_guid,
+			INTEL_DSM_REVISION_ID, INTEL_DSM_FN_PLATFORM_MUX_INFO,
+			NULL, ACPI_TYPE_PACKAGE);
+	if (!pkg) {
+		DRM_DEBUG_DRIVER("failed to evaluate _DSM\n");
+		return;
+	}
+
+	if (!pkg->package.count) {
+		DRM_DEBUG_DRIVER("no connection in _DSM\n");
+		return;
+	}
+
+	connector_count = &pkg->package.elements[0];
+	DRM_DEBUG_DRIVER("MUX info connectors: %lld\n",
+		  (unsigned long long)connector_count->integer.value);
+	for (i = 1; i < pkg->package.count; i++) {
+		union acpi_object *obj = &pkg->package.elements[i];
+		union acpi_object *connector_id;
+		union acpi_object *info;
+
+		if (obj->type != ACPI_TYPE_PACKAGE || obj->package.count < 2) {
+			DRM_DEBUG_DRIVER("Invalid object for MUX #%d\n", i);
+			continue;
+		}
+
+		connector_id = &obj->package.elements[0];
+		info = &obj->package.elements[1];
+		if (info->type != ACPI_TYPE_BUFFER || info->buffer.length < 4) {
+			DRM_DEBUG_DRIVER("Invalid info for MUX obj #%d\n", i);
+			continue;
+		}
+
+		DRM_DEBUG_DRIVER("Connector id: 0x%016llx\n",
+			  (unsigned long long)connector_id->integer.value);
+		DRM_DEBUG_DRIVER("  port id: %s\n",
+		       intel_dsm_port_name(info->buffer.pointer[0]));
+		DRM_DEBUG_DRIVER("  display mux info: %s\n",
+		       intel_dsm_mux_type(info->buffer.pointer[1]));
+		DRM_DEBUG_DRIVER("  aux/dc mux info: %s\n",
+		       intel_dsm_mux_type(info->buffer.pointer[2]));
+		DRM_DEBUG_DRIVER("  hpd mux info: %s\n",
+		       intel_dsm_mux_type(info->buffer.pointer[3]));
+	}
+
+	ACPI_FREE(pkg);
+}
+
+static acpi_handle intel_dsm_pci_probe(struct pci_dev *pdev)
+{
+	acpi_handle dhandle;
+
+	dhandle = ACPI_HANDLE(&pdev->dev);
+	if (!dhandle)
+		return NULL;
+
+	if (!acpi_check_dsm(dhandle, &intel_dsm_guid, INTEL_DSM_REVISION_ID,
+			    1 << INTEL_DSM_FN_PLATFORM_MUX_INFO)) {
+		DRM_DEBUG_KMS("no _DSM method for intel device\n");
+		return NULL;
+	}
+
+	intel_dsm_platform_mux_info(dhandle);
+
+	return dhandle;
+}
+
+static bool intel_dsm_detect(void)
+{
+	acpi_handle dhandle = NULL;
+	char acpi_method_name[255] = { 0 };
+	struct acpi_buffer buffer = {sizeof(acpi_method_name), acpi_method_name};
+	struct pci_dev *pdev = NULL;
+	int vga_count = 0;
+
+	while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, pdev)) != NULL) {
+		vga_count++;
+		dhandle = intel_dsm_pci_probe(pdev) ?: dhandle;
+	}
+
+	if (vga_count == 2 && dhandle) {
+		acpi_get_name(dhandle, ACPI_FULL_PATHNAME, &buffer);
+		DRM_DEBUG_DRIVER("vga_switcheroo: detected DSM switching method %s handle\n",
+				 acpi_method_name);
+		return true;
+	}
+
+	return false;
+}
+
+void intel_register_dsm_handler(void)
+{
+	if (!intel_dsm_detect())
+		return;
+}
+
+void intel_unregister_dsm_handler(void)
+{
+}
+
+void intel_dsm_get_bios_data_funcs_supported(struct drm_i915_private *i915)
+{
+	struct pci_dev *pdev = to_pci_dev(i915->drm.dev);
+	acpi_handle dhandle;
+	union acpi_object *obj;
+
+	dhandle = ACPI_HANDLE(&pdev->dev);
+	if (!dhandle)
+		return;
+
+	obj = acpi_evaluate_dsm(dhandle, &intel_dsm_guid2, INTEL_DSM_REVISION_ID,
+				INTEL_DSM_FN_GET_BIOS_DATA_FUNCS_SUPPORTED, NULL);
+	if (obj)
+		ACPI_FREE(obj);
+}
+
+/*
+ * ACPI Specification, Revision 5.0, Appendix B.3.2 _DOD (Enumerate All Devices
+ * Attached to the Display Adapter).
+ */
+#define ACPI_DISPLAY_INDEX_SHIFT		0
+#define ACPI_DISPLAY_INDEX_MASK			(0xf << 0)
+#define ACPI_DISPLAY_PORT_ATTACHMENT_SHIFT	4
+#define ACPI_DISPLAY_PORT_ATTACHMENT_MASK	(0xf << 4)
+#define ACPI_DISPLAY_TYPE_SHIFT			8
+#define ACPI_DISPLAY_TYPE_MASK			(0xf << 8)
+#define ACPI_DISPLAY_TYPE_OTHER			(0 << 8)
+#define ACPI_DISPLAY_TYPE_VGA			(1 << 8)
+#define ACPI_DISPLAY_TYPE_TV			(2 << 8)
+#define ACPI_DISPLAY_TYPE_EXTERNAL_DIGITAL	(3 << 8)
+#define ACPI_DISPLAY_TYPE_INTERNAL_DIGITAL	(4 << 8)
+#define ACPI_VENDOR_SPECIFIC_SHIFT		12
+#define ACPI_VENDOR_SPECIFIC_MASK		(0xf << 12)
+#define ACPI_BIOS_CAN_DETECT			(1 << 16)
+#define ACPI_DEPENDS_ON_VGA			(1 << 17)
+#define ACPI_PIPE_ID_SHIFT			18
+#define ACPI_PIPE_ID_MASK			(7 << 18)
+#define ACPI_DEVICE_ID_SCHEME			(1ULL << 31)
+
+static u32 acpi_display_type(struct intel_connector *connector)
+{
+	u32 display_type;
+
+	switch (connector->base.connector_type) {
+	case DRM_MODE_CONNECTOR_VGA:
+	case DRM_MODE_CONNECTOR_DVIA:
+		display_type = ACPI_DISPLAY_TYPE_VGA;
+		break;
+	case DRM_MODE_CONNECTOR_Composite:
+	case DRM_MODE_CONNECTOR_SVIDEO:
+	case DRM_MODE_CONNECTOR_Component:
+	case DRM_MODE_CONNECTOR_9PinDIN:
+	case DRM_MODE_CONNECTOR_TV:
+		display_type = ACPI_DISPLAY_TYPE_TV;
+		break;
+	case DRM_MODE_CONNECTOR_DVII:
+	case DRM_MODE_CONNECTOR_DVID:
+	case DRM_MODE_CONNECTOR_DisplayPort:
+	case DRM_MODE_CONNECTOR_HDMIA:
+	case DRM_MODE_CONNECTOR_HDMIB:
+		display_type = ACPI_DISPLAY_TYPE_EXTERNAL_DIGITAL;
+		break;
+	case DRM_MODE_CONNECTOR_LVDS:
+	case DRM_MODE_CONNECTOR_eDP:
+	case DRM_MODE_CONNECTOR_DSI:
+		display_type = ACPI_DISPLAY_TYPE_INTERNAL_DIGITAL;
+		break;
+	case DRM_MODE_CONNECTOR_Unknown:
+	case DRM_MODE_CONNECTOR_VIRTUAL:
+		display_type = ACPI_DISPLAY_TYPE_OTHER;
+		break;
+	default:
+		MISSING_CASE(connector->base.connector_type);
+		display_type = ACPI_DISPLAY_TYPE_OTHER;
+		break;
+	}
+
+	return display_type;
+}
+
+void intel_acpi_device_id_update(struct drm_i915_private *dev_priv)
+{
+	struct drm_device *drm_dev = &dev_priv->drm;
+	struct intel_connector *connector;
+	struct drm_connector_list_iter conn_iter;
+	u8 display_index[16] = {};
+
+	/* Populate the ACPI IDs for all connectors for a given drm_device */
+	drm_connector_list_iter_begin(drm_dev, &conn_iter);
+	for_each_intel_connector_iter(connector, &conn_iter) {
+		u32 device_id, type;
+
+		device_id = acpi_display_type(connector);
+
+		/* Use display type specific display index. */
+		type = (device_id & ACPI_DISPLAY_TYPE_MASK)
+			>> ACPI_DISPLAY_TYPE_SHIFT;
+		device_id |= display_index[type]++ << ACPI_DISPLAY_INDEX_SHIFT;
+
+		connector->acpi_device_id = device_id;
+	}
+	drm_connector_list_iter_end(&conn_iter);
+}
+
+/* NOTE: The connector order must be final before this is called. */
+void intel_acpi_assign_connector_fwnodes(struct drm_i915_private *i915)
+{
+	struct drm_connector_list_iter conn_iter;
+	struct drm_device *drm_dev = &i915->drm;
+	struct fwnode_handle *fwnode = NULL;
+	struct drm_connector *connector;
+	struct acpi_device *adev;
+
+	drm_connector_list_iter_begin(drm_dev, &conn_iter);
+	drm_for_each_connector_iter(connector, &conn_iter) {
+		/* Always getting the next, even when the last was not used. */
+		fwnode = device_get_next_child_node(drm_dev->dev, fwnode);
+		if (!fwnode)
+			break;
+
+		switch (connector->connector_type) {
+		case DRM_MODE_CONNECTOR_LVDS:
+		case DRM_MODE_CONNECTOR_eDP:
+		case DRM_MODE_CONNECTOR_DSI:
+			/*
+			 * Integrated displays have a specific address 0x1f on
+			 * most Intel platforms, but not on all of them.
+			 */
+			adev = acpi_find_child_device(ACPI_COMPANION(drm_dev->dev),
+						      0x1f, 0);
+			if (adev) {
+				connector->fwnode =
+					fwnode_handle_get(acpi_fwnode_handle(adev));
+				break;
+			}
+			fallthrough;
+		default:
+			connector->fwnode = fwnode_handle_get(fwnode);
+			break;
+		}
+	}
+	drm_connector_list_iter_end(&conn_iter);
+	/*
+	 * device_get_next_child_node() takes a reference on the fwnode, if
+	 * we stopped iterating because we are out of connectors we need to
+	 * put this, otherwise fwnode is NULL and the put is a no-op.
+	 */
+	fwnode_handle_put(fwnode);
+}
+
+void intel_acpi_video_register(struct drm_i915_private *i915)
+{
+	struct drm_connector_list_iter conn_iter;
+	struct drm_connector *connector;
+
+	acpi_video_register();
+
+	/*
+	 * If i915 is driving an internal panel without registering its native
+	 * backlight handler try to register the acpi_video backlight.
+	 * For panels not driven by i915 another GPU driver may still register
+	 * a native backlight later and acpi_video_register_backlight() should
+	 * only be called after any native backlights have been registered.
+	 */
+	drm_connector_list_iter_begin(&i915->drm, &conn_iter);
+	drm_for_each_connector_iter(connector, &conn_iter) {
+		struct intel_panel *panel = &to_intel_connector(connector)->panel;
+
+		if (panel->backlight.funcs && !panel->backlight.device) {
+			acpi_video_register_backlight();
+			break;
+		}
+	}
+	drm_connector_list_iter_end(&conn_iter);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_acpi.h b/drivers/gpu/drm/i915/display/intel_acpi.h
new file mode 100644
index 000000000..6a0007452
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_acpi.h
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_ACPI_H__
+#define __INTEL_ACPI_H__
+
+struct drm_i915_private;
+
+#ifdef CONFIG_ACPI
+void intel_register_dsm_handler(void);
+void intel_unregister_dsm_handler(void);
+void intel_dsm_get_bios_data_funcs_supported(struct drm_i915_private *i915);
+void intel_acpi_device_id_update(struct drm_i915_private *i915);
+void intel_acpi_assign_connector_fwnodes(struct drm_i915_private *i915);
+void intel_acpi_video_register(struct drm_i915_private *i915);
+#else
+static inline void intel_register_dsm_handler(void) { return; }
+static inline void intel_unregister_dsm_handler(void) { return; }
+static inline
+void intel_dsm_get_bios_data_funcs_supported(struct drm_i915_private *i915) { return; }
+static inline
+void intel_acpi_device_id_update(struct drm_i915_private *i915) { return; }
+static inline
+void intel_acpi_assign_connector_fwnodes(struct drm_i915_private *i915) { return; }
+static inline
+void intel_acpi_video_register(struct drm_i915_private *i915) { return; }
+#endif /* CONFIG_ACPI */
+
+#endif /* __INTEL_ACPI_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_atomic.c b/drivers/gpu/drm/i915/display/intel_atomic.c
new file mode 100644
index 000000000..a502af0b6
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_atomic.c
@@ -0,0 +1,351 @@
+/*
+ * Copyright © 2015 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * DOC: atomic modeset support
+ *
+ * The functions here implement the state management and hardware programming
+ * dispatch required by the atomic modeset infrastructure.
+ * See intel_atomic_plane.c for the plane-specific atomic functionality.
+ */
+
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_fourcc.h>
+
+#include "i915_drv.h"
+#include "i915_reg.h"
+#include "intel_atomic.h"
+#include "intel_cdclk.h"
+#include "intel_display_types.h"
+#include "intel_global_state.h"
+#include "intel_hdcp.h"
+#include "intel_psr.h"
+#include "intel_fb.h"
+#include "skl_universal_plane.h"
+
+/**
+ * intel_digital_connector_atomic_get_property - hook for connector->atomic_get_property.
+ * @connector: Connector to get the property for.
+ * @state: Connector state to retrieve the property from.
+ * @property: Property to retrieve.
+ * @val: Return value for the property.
+ *
+ * Returns the atomic property value for a digital connector.
+ */
+int intel_digital_connector_atomic_get_property(struct drm_connector *connector,
+						const struct drm_connector_state *state,
+						struct drm_property *property,
+						u64 *val)
+{
+	struct drm_device *dev = connector->dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_digital_connector_state *intel_conn_state =
+		to_intel_digital_connector_state(state);
+
+	if (property == dev_priv->display.properties.force_audio)
+		*val = intel_conn_state->force_audio;
+	else if (property == dev_priv->display.properties.broadcast_rgb)
+		*val = intel_conn_state->broadcast_rgb;
+	else {
+		drm_dbg_atomic(&dev_priv->drm,
+			       "Unknown property [PROP:%d:%s]\n",
+			       property->base.id, property->name);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+/**
+ * intel_digital_connector_atomic_set_property - hook for connector->atomic_set_property.
+ * @connector: Connector to set the property for.
+ * @state: Connector state to set the property on.
+ * @property: Property to set.
+ * @val: New value for the property.
+ *
+ * Sets the atomic property value for a digital connector.
+ */
+int intel_digital_connector_atomic_set_property(struct drm_connector *connector,
+						struct drm_connector_state *state,
+						struct drm_property *property,
+						u64 val)
+{
+	struct drm_device *dev = connector->dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_digital_connector_state *intel_conn_state =
+		to_intel_digital_connector_state(state);
+
+	if (property == dev_priv->display.properties.force_audio) {
+		intel_conn_state->force_audio = val;
+		return 0;
+	}
+
+	if (property == dev_priv->display.properties.broadcast_rgb) {
+		intel_conn_state->broadcast_rgb = val;
+		return 0;
+	}
+
+	drm_dbg_atomic(&dev_priv->drm, "Unknown property [PROP:%d:%s]\n",
+		       property->base.id, property->name);
+	return -EINVAL;
+}
+
+int intel_digital_connector_atomic_check(struct drm_connector *conn,
+					 struct drm_atomic_state *state)
+{
+	struct drm_connector_state *new_state =
+		drm_atomic_get_new_connector_state(state, conn);
+	struct intel_digital_connector_state *new_conn_state =
+		to_intel_digital_connector_state(new_state);
+	struct drm_connector_state *old_state =
+		drm_atomic_get_old_connector_state(state, conn);
+	struct intel_digital_connector_state *old_conn_state =
+		to_intel_digital_connector_state(old_state);
+	struct drm_crtc_state *crtc_state;
+
+	intel_hdcp_atomic_check(conn, old_state, new_state);
+
+	if (!new_state->crtc)
+		return 0;
+
+	crtc_state = drm_atomic_get_new_crtc_state(state, new_state->crtc);
+
+	/*
+	 * These properties are handled by fastset, and might not end
+	 * up in a modeset.
+	 */
+	if (new_conn_state->force_audio != old_conn_state->force_audio ||
+	    new_conn_state->broadcast_rgb != old_conn_state->broadcast_rgb ||
+	    new_conn_state->base.colorspace != old_conn_state->base.colorspace ||
+	    new_conn_state->base.picture_aspect_ratio != old_conn_state->base.picture_aspect_ratio ||
+	    new_conn_state->base.content_type != old_conn_state->base.content_type ||
+	    new_conn_state->base.scaling_mode != old_conn_state->base.scaling_mode ||
+	    new_conn_state->base.privacy_screen_sw_state != old_conn_state->base.privacy_screen_sw_state ||
+	    !drm_connector_atomic_hdr_metadata_equal(old_state, new_state))
+		crtc_state->mode_changed = true;
+
+	return 0;
+}
+
+/**
+ * intel_digital_connector_duplicate_state - duplicate connector state
+ * @connector: digital connector
+ *
+ * Allocates and returns a copy of the connector state (both common and
+ * digital connector specific) for the specified connector.
+ *
+ * Returns: The newly allocated connector state, or NULL on failure.
+ */
+struct drm_connector_state *
+intel_digital_connector_duplicate_state(struct drm_connector *connector)
+{
+	struct intel_digital_connector_state *state;
+
+	state = kmemdup(connector->state, sizeof(*state), GFP_KERNEL);
+	if (!state)
+		return NULL;
+
+	__drm_atomic_helper_connector_duplicate_state(connector, &state->base);
+	return &state->base;
+}
+
+/**
+ * intel_connector_needs_modeset - check if connector needs a modeset
+ * @state: the atomic state corresponding to this modeset
+ * @connector: the connector
+ */
+bool
+intel_connector_needs_modeset(struct intel_atomic_state *state,
+			      struct drm_connector *connector)
+{
+	const struct drm_connector_state *old_conn_state, *new_conn_state;
+
+	old_conn_state = drm_atomic_get_old_connector_state(&state->base, connector);
+	new_conn_state = drm_atomic_get_new_connector_state(&state->base, connector);
+
+	return old_conn_state->crtc != new_conn_state->crtc ||
+	       (new_conn_state->crtc &&
+		drm_atomic_crtc_needs_modeset(drm_atomic_get_new_crtc_state(&state->base,
+									    new_conn_state->crtc)));
+}
+
+/**
+ * intel_any_crtc_needs_modeset - check if any CRTC needs a modeset
+ * @state: the atomic state corresponding to this modeset
+ *
+ * Returns true if any CRTC in @state needs a modeset.
+ */
+bool intel_any_crtc_needs_modeset(struct intel_atomic_state *state)
+{
+	struct intel_crtc *crtc;
+	struct intel_crtc_state *crtc_state;
+	int i;
+
+	for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) {
+		if (intel_crtc_needs_modeset(crtc_state))
+			return true;
+	}
+
+	return false;
+}
+
+struct intel_digital_connector_state *
+intel_atomic_get_digital_connector_state(struct intel_atomic_state *state,
+					 struct intel_connector *connector)
+{
+	struct drm_connector_state *conn_state;
+
+	conn_state = drm_atomic_get_connector_state(&state->base,
+						    &connector->base);
+	if (IS_ERR(conn_state))
+		return ERR_CAST(conn_state);
+
+	return to_intel_digital_connector_state(conn_state);
+}
+
+/**
+ * intel_crtc_duplicate_state - duplicate crtc state
+ * @crtc: drm crtc
+ *
+ * Allocates and returns a copy of the crtc state (both common and
+ * Intel-specific) for the specified crtc.
+ *
+ * Returns: The newly allocated crtc state, or NULL on failure.
+ */
+struct drm_crtc_state *
+intel_crtc_duplicate_state(struct drm_crtc *crtc)
+{
+	const struct intel_crtc_state *old_crtc_state = to_intel_crtc_state(crtc->state);
+	struct intel_crtc_state *crtc_state;
+
+	crtc_state = kmemdup(old_crtc_state, sizeof(*crtc_state), GFP_KERNEL);
+	if (!crtc_state)
+		return NULL;
+
+	__drm_atomic_helper_crtc_duplicate_state(crtc, &crtc_state->uapi);
+
+	/* copy color blobs */
+	if (crtc_state->hw.degamma_lut)
+		drm_property_blob_get(crtc_state->hw.degamma_lut);
+	if (crtc_state->hw.ctm)
+		drm_property_blob_get(crtc_state->hw.ctm);
+	if (crtc_state->hw.gamma_lut)
+		drm_property_blob_get(crtc_state->hw.gamma_lut);
+
+	crtc_state->update_pipe = false;
+	crtc_state->disable_lp_wm = false;
+	crtc_state->disable_cxsr = false;
+	crtc_state->update_wm_pre = false;
+	crtc_state->update_wm_post = false;
+	crtc_state->fifo_changed = false;
+	crtc_state->preload_luts = false;
+	crtc_state->inherited = false;
+	crtc_state->wm.need_postvbl_update = false;
+	crtc_state->do_async_flip = false;
+	crtc_state->fb_bits = 0;
+	crtc_state->update_planes = 0;
+	crtc_state->dsb = NULL;
+
+	return &crtc_state->uapi;
+}
+
+static void intel_crtc_put_color_blobs(struct intel_crtc_state *crtc_state)
+{
+	drm_property_blob_put(crtc_state->hw.degamma_lut);
+	drm_property_blob_put(crtc_state->hw.gamma_lut);
+	drm_property_blob_put(crtc_state->hw.ctm);
+}
+
+void intel_crtc_free_hw_state(struct intel_crtc_state *crtc_state)
+{
+	intel_crtc_put_color_blobs(crtc_state);
+}
+
+/**
+ * intel_crtc_destroy_state - destroy crtc state
+ * @crtc: drm crtc
+ * @state: the state to destroy
+ *
+ * Destroys the crtc state (both common and Intel-specific) for the
+ * specified crtc.
+ */
+void
+intel_crtc_destroy_state(struct drm_crtc *crtc,
+			 struct drm_crtc_state *state)
+{
+	struct intel_crtc_state *crtc_state = to_intel_crtc_state(state);
+
+	drm_WARN_ON(crtc->dev, crtc_state->dsb);
+
+	__drm_atomic_helper_crtc_destroy_state(&crtc_state->uapi);
+	intel_crtc_free_hw_state(crtc_state);
+	kfree(crtc_state);
+}
+
+struct drm_atomic_state *
+intel_atomic_state_alloc(struct drm_device *dev)
+{
+	struct intel_atomic_state *state = kzalloc(sizeof(*state), GFP_KERNEL);
+
+	if (!state || drm_atomic_state_init(dev, &state->base) < 0) {
+		kfree(state);
+		return NULL;
+	}
+
+	return &state->base;
+}
+
+void intel_atomic_state_free(struct drm_atomic_state *_state)
+{
+	struct intel_atomic_state *state = to_intel_atomic_state(_state);
+
+	drm_atomic_state_default_release(&state->base);
+	kfree(state->global_objs);
+
+	i915_sw_fence_fini(&state->commit_ready);
+
+	kfree(state);
+}
+
+void intel_atomic_state_clear(struct drm_atomic_state *s)
+{
+	struct intel_atomic_state *state = to_intel_atomic_state(s);
+
+	drm_atomic_state_default_clear(&state->base);
+	intel_atomic_clear_global_state(state);
+
+	state->dpll_set = state->modeset = false;
+}
+
+struct intel_crtc_state *
+intel_atomic_get_crtc_state(struct drm_atomic_state *state,
+			    struct intel_crtc *crtc)
+{
+	struct drm_crtc_state *crtc_state;
+	crtc_state = drm_atomic_get_crtc_state(state, &crtc->base);
+	if (IS_ERR(crtc_state))
+		return ERR_CAST(crtc_state);
+
+	return to_intel_crtc_state(crtc_state);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_atomic.h b/drivers/gpu/drm/i915/display/intel_atomic.h
new file mode 100644
index 000000000..e506f6a87
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_atomic.h
@@ -0,0 +1,55 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_ATOMIC_H__
+#define __INTEL_ATOMIC_H__
+
+#include <linux/types.h>
+
+struct drm_atomic_state;
+struct drm_connector;
+struct drm_connector_state;
+struct drm_crtc;
+struct drm_crtc_state;
+struct drm_device;
+struct drm_i915_private;
+struct drm_property;
+struct intel_atomic_state;
+struct intel_connector;
+struct intel_crtc;
+struct intel_crtc_state;
+
+int intel_digital_connector_atomic_get_property(struct drm_connector *connector,
+						const struct drm_connector_state *state,
+						struct drm_property *property,
+						u64 *val);
+int intel_digital_connector_atomic_set_property(struct drm_connector *connector,
+						struct drm_connector_state *state,
+						struct drm_property *property,
+						u64 val);
+int intel_digital_connector_atomic_check(struct drm_connector *conn,
+					 struct drm_atomic_state *state);
+struct drm_connector_state *
+intel_digital_connector_duplicate_state(struct drm_connector *connector);
+bool intel_connector_needs_modeset(struct intel_atomic_state *state,
+				   struct drm_connector *connector);
+bool intel_any_crtc_needs_modeset(struct intel_atomic_state *state);
+struct intel_digital_connector_state *
+intel_atomic_get_digital_connector_state(struct intel_atomic_state *state,
+					 struct intel_connector *connector);
+
+struct drm_crtc_state *intel_crtc_duplicate_state(struct drm_crtc *crtc);
+void intel_crtc_destroy_state(struct drm_crtc *crtc,
+			       struct drm_crtc_state *state);
+void intel_crtc_free_hw_state(struct intel_crtc_state *crtc_state);
+struct drm_atomic_state *intel_atomic_state_alloc(struct drm_device *dev);
+void intel_atomic_state_free(struct drm_atomic_state *state);
+void intel_atomic_state_clear(struct drm_atomic_state *state);
+
+struct intel_crtc_state *
+intel_atomic_get_crtc_state(struct drm_atomic_state *state,
+			    struct intel_crtc *crtc);
+
+#endif /* __INTEL_ATOMIC_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_atomic_plane.c b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
new file mode 100644
index 000000000..82826454b
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
@@ -0,0 +1,1120 @@
+/*
+ * Copyright © 2014 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * DOC: atomic plane helpers
+ *
+ * The functions here are used by the atomic plane helper functions to
+ * implement legacy plane updates (i.e., drm_plane->update_plane() and
+ * drm_plane->disable_plane()).  This allows plane updates to use the
+ * atomic state infrastructure and perform plane updates as separate
+ * prepare/check/commit/cleanup steps.
+ */
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_fourcc.h>
+
+#include "gt/intel_rps.h"
+
+#include "intel_atomic_plane.h"
+#include "intel_cdclk.h"
+#include "intel_display_trace.h"
+#include "intel_display_types.h"
+#include "intel_fb.h"
+#include "intel_fb_pin.h"
+#include "intel_sprite.h"
+#include "skl_scaler.h"
+#include "skl_watermark.h"
+
+static void intel_plane_state_reset(struct intel_plane_state *plane_state,
+				    struct intel_plane *plane)
+{
+	memset(plane_state, 0, sizeof(*plane_state));
+
+	__drm_atomic_helper_plane_state_reset(&plane_state->uapi, &plane->base);
+
+	plane_state->scaler_id = -1;
+}
+
+struct intel_plane *intel_plane_alloc(void)
+{
+	struct intel_plane_state *plane_state;
+	struct intel_plane *plane;
+
+	plane = kzalloc(sizeof(*plane), GFP_KERNEL);
+	if (!plane)
+		return ERR_PTR(-ENOMEM);
+
+	plane_state = kzalloc(sizeof(*plane_state), GFP_KERNEL);
+	if (!plane_state) {
+		kfree(plane);
+		return ERR_PTR(-ENOMEM);
+	}
+
+	intel_plane_state_reset(plane_state, plane);
+
+	plane->base.state = &plane_state->uapi;
+
+	return plane;
+}
+
+void intel_plane_free(struct intel_plane *plane)
+{
+	intel_plane_destroy_state(&plane->base, plane->base.state);
+	kfree(plane);
+}
+
+/**
+ * intel_plane_duplicate_state - duplicate plane state
+ * @plane: drm plane
+ *
+ * Allocates and returns a copy of the plane state (both common and
+ * Intel-specific) for the specified plane.
+ *
+ * Returns: The newly allocated plane state, or NULL on failure.
+ */
+struct drm_plane_state *
+intel_plane_duplicate_state(struct drm_plane *plane)
+{
+	struct intel_plane_state *intel_state;
+
+	intel_state = to_intel_plane_state(plane->state);
+	intel_state = kmemdup(intel_state, sizeof(*intel_state), GFP_KERNEL);
+
+	if (!intel_state)
+		return NULL;
+
+	__drm_atomic_helper_plane_duplicate_state(plane, &intel_state->uapi);
+
+	intel_state->ggtt_vma = NULL;
+	intel_state->dpt_vma = NULL;
+	intel_state->flags = 0;
+
+	/* add reference to fb */
+	if (intel_state->hw.fb)
+		drm_framebuffer_get(intel_state->hw.fb);
+
+	return &intel_state->uapi;
+}
+
+/**
+ * intel_plane_destroy_state - destroy plane state
+ * @plane: drm plane
+ * @state: state object to destroy
+ *
+ * Destroys the plane state (both common and Intel-specific) for the
+ * specified plane.
+ */
+void
+intel_plane_destroy_state(struct drm_plane *plane,
+			  struct drm_plane_state *state)
+{
+	struct intel_plane_state *plane_state = to_intel_plane_state(state);
+
+	drm_WARN_ON(plane->dev, plane_state->ggtt_vma);
+	drm_WARN_ON(plane->dev, plane_state->dpt_vma);
+
+	__drm_atomic_helper_plane_destroy_state(&plane_state->uapi);
+	if (plane_state->hw.fb)
+		drm_framebuffer_put(plane_state->hw.fb);
+	kfree(plane_state);
+}
+
+unsigned int intel_adjusted_rate(const struct drm_rect *src,
+				 const struct drm_rect *dst,
+				 unsigned int rate)
+{
+	unsigned int src_w, src_h, dst_w, dst_h;
+
+	src_w = drm_rect_width(src) >> 16;
+	src_h = drm_rect_height(src) >> 16;
+	dst_w = drm_rect_width(dst);
+	dst_h = drm_rect_height(dst);
+
+	/* Downscaling limits the maximum pixel rate */
+	dst_w = min(src_w, dst_w);
+	dst_h = min(src_h, dst_h);
+
+	return DIV_ROUND_UP_ULL(mul_u32_u32(rate, src_w * src_h),
+				dst_w * dst_h);
+}
+
+unsigned int intel_plane_pixel_rate(const struct intel_crtc_state *crtc_state,
+				    const struct intel_plane_state *plane_state)
+{
+	/*
+	 * Note we don't check for plane visibility here as
+	 * we want to use this when calculating the cursor
+	 * watermarks even if the cursor is fully offscreen.
+	 * That depends on the src/dst rectangles being
+	 * correctly populated whenever the watermark code
+	 * considers the cursor to be visible, whether or not
+	 * it is actually visible.
+	 *
+	 * See: intel_wm_plane_visible() and intel_check_cursor()
+	 */
+
+	return intel_adjusted_rate(&plane_state->uapi.src,
+				   &plane_state->uapi.dst,
+				   crtc_state->pixel_rate);
+}
+
+unsigned int intel_plane_data_rate(const struct intel_crtc_state *crtc_state,
+				   const struct intel_plane_state *plane_state,
+				   int color_plane)
+{
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+
+	if (!plane_state->uapi.visible)
+		return 0;
+
+	return intel_plane_pixel_rate(crtc_state, plane_state) *
+		fb->format->cpp[color_plane];
+}
+
+static bool
+use_min_ddb(const struct intel_crtc_state *crtc_state,
+	    struct intel_plane *plane)
+{
+	struct drm_i915_private *i915 = to_i915(plane->base.dev);
+
+	return DISPLAY_VER(i915) >= 13 &&
+	       crtc_state->uapi.async_flip &&
+	       plane->async_flip;
+}
+
+static unsigned int
+intel_plane_relative_data_rate(const struct intel_crtc_state *crtc_state,
+			       const struct intel_plane_state *plane_state,
+			       int color_plane)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	int width, height;
+
+	if (plane->id == PLANE_CURSOR)
+		return 0;
+
+	if (!plane_state->uapi.visible)
+		return 0;
+
+	/*
+	 * We calculate extra ddb based on ratio plane rate/total data rate
+	 * in case, in some cases we should not allocate extra ddb for the plane,
+	 * so do not count its data rate, if this is the case.
+	 */
+	if (use_min_ddb(crtc_state, plane))
+		return 0;
+
+	/*
+	 * Src coordinates are already rotated by 270 degrees for
+	 * the 90/270 degree plane rotation cases (to match the
+	 * GTT mapping), hence no need to account for rotation here.
+	 */
+	width = drm_rect_width(&plane_state->uapi.src) >> 16;
+	height = drm_rect_height(&plane_state->uapi.src) >> 16;
+
+	/* UV plane does 1/2 pixel sub-sampling */
+	if (color_plane == 1) {
+		width /= 2;
+		height /= 2;
+	}
+
+	return width * height * fb->format->cpp[color_plane];
+}
+
+int intel_plane_calc_min_cdclk(struct intel_atomic_state *state,
+			       struct intel_plane *plane,
+			       bool *need_cdclk_calc)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	const struct intel_plane_state *plane_state =
+		intel_atomic_get_new_plane_state(state, plane);
+	struct intel_crtc *crtc = to_intel_crtc(plane_state->hw.crtc);
+	const struct intel_cdclk_state *cdclk_state;
+	const struct intel_crtc_state *old_crtc_state;
+	struct intel_crtc_state *new_crtc_state;
+
+	if (!plane_state->uapi.visible || !plane->min_cdclk)
+		return 0;
+
+	old_crtc_state = intel_atomic_get_old_crtc_state(state, crtc);
+	new_crtc_state = intel_atomic_get_new_crtc_state(state, crtc);
+
+	new_crtc_state->min_cdclk[plane->id] =
+		plane->min_cdclk(new_crtc_state, plane_state);
+
+	/*
+	 * No need to check against the cdclk state if
+	 * the min cdclk for the plane doesn't increase.
+	 *
+	 * Ie. we only ever increase the cdclk due to plane
+	 * requirements. This can reduce back and forth
+	 * display blinking due to constant cdclk changes.
+	 */
+	if (new_crtc_state->min_cdclk[plane->id] <=
+	    old_crtc_state->min_cdclk[plane->id])
+		return 0;
+
+	cdclk_state = intel_atomic_get_cdclk_state(state);
+	if (IS_ERR(cdclk_state))
+		return PTR_ERR(cdclk_state);
+
+	/*
+	 * No need to recalculate the cdclk state if
+	 * the min cdclk for the pipe doesn't increase.
+	 *
+	 * Ie. we only ever increase the cdclk due to plane
+	 * requirements. This can reduce back and forth
+	 * display blinking due to constant cdclk changes.
+	 */
+	if (new_crtc_state->min_cdclk[plane->id] <=
+	    cdclk_state->min_cdclk[crtc->pipe])
+		return 0;
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "[PLANE:%d:%s] min cdclk (%d kHz) > [CRTC:%d:%s] min cdclk (%d kHz)\n",
+		    plane->base.base.id, plane->base.name,
+		    new_crtc_state->min_cdclk[plane->id],
+		    crtc->base.base.id, crtc->base.name,
+		    cdclk_state->min_cdclk[crtc->pipe]);
+	*need_cdclk_calc = true;
+
+	return 0;
+}
+
+static void intel_plane_clear_hw_state(struct intel_plane_state *plane_state)
+{
+	if (plane_state->hw.fb)
+		drm_framebuffer_put(plane_state->hw.fb);
+
+	memset(&plane_state->hw, 0, sizeof(plane_state->hw));
+}
+
+void intel_plane_copy_uapi_to_hw_state(struct intel_plane_state *plane_state,
+				       const struct intel_plane_state *from_plane_state,
+				       struct intel_crtc *crtc)
+{
+	intel_plane_clear_hw_state(plane_state);
+
+	/*
+	 * For the bigjoiner slave uapi.crtc will point at
+	 * the master crtc. So we explicitly assign the right
+	 * slave crtc to hw.crtc. uapi.crtc!=NULL simply indicates
+	 * the plane is logically enabled on the uapi level.
+	 */
+	plane_state->hw.crtc = from_plane_state->uapi.crtc ? &crtc->base : NULL;
+
+	plane_state->hw.fb = from_plane_state->uapi.fb;
+	if (plane_state->hw.fb)
+		drm_framebuffer_get(plane_state->hw.fb);
+
+	plane_state->hw.alpha = from_plane_state->uapi.alpha;
+	plane_state->hw.pixel_blend_mode =
+		from_plane_state->uapi.pixel_blend_mode;
+	plane_state->hw.rotation = from_plane_state->uapi.rotation;
+	plane_state->hw.color_encoding = from_plane_state->uapi.color_encoding;
+	plane_state->hw.color_range = from_plane_state->uapi.color_range;
+	plane_state->hw.scaling_filter = from_plane_state->uapi.scaling_filter;
+
+	plane_state->uapi.src = drm_plane_state_src(&from_plane_state->uapi);
+	plane_state->uapi.dst = drm_plane_state_dest(&from_plane_state->uapi);
+}
+
+void intel_plane_copy_hw_state(struct intel_plane_state *plane_state,
+			       const struct intel_plane_state *from_plane_state)
+{
+	intel_plane_clear_hw_state(plane_state);
+
+	memcpy(&plane_state->hw, &from_plane_state->hw,
+	       sizeof(plane_state->hw));
+
+	if (plane_state->hw.fb)
+		drm_framebuffer_get(plane_state->hw.fb);
+}
+
+void intel_plane_set_invisible(struct intel_crtc_state *crtc_state,
+			       struct intel_plane_state *plane_state)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+
+	crtc_state->active_planes &= ~BIT(plane->id);
+	crtc_state->scaled_planes &= ~BIT(plane->id);
+	crtc_state->nv12_planes &= ~BIT(plane->id);
+	crtc_state->c8_planes &= ~BIT(plane->id);
+	crtc_state->data_rate[plane->id] = 0;
+	crtc_state->data_rate_y[plane->id] = 0;
+	crtc_state->rel_data_rate[plane->id] = 0;
+	crtc_state->rel_data_rate_y[plane->id] = 0;
+	crtc_state->min_cdclk[plane->id] = 0;
+
+	plane_state->uapi.visible = false;
+}
+
+/* FIXME nuke when all wm code is atomic */
+static bool intel_wm_need_update(const struct intel_plane_state *cur,
+				 struct intel_plane_state *new)
+{
+	/* Update watermarks on tiling or size changes. */
+	if (new->uapi.visible != cur->uapi.visible)
+		return true;
+
+	if (!cur->hw.fb || !new->hw.fb)
+		return false;
+
+	if (cur->hw.fb->modifier != new->hw.fb->modifier ||
+	    cur->hw.rotation != new->hw.rotation ||
+	    drm_rect_width(&new->uapi.src) != drm_rect_width(&cur->uapi.src) ||
+	    drm_rect_height(&new->uapi.src) != drm_rect_height(&cur->uapi.src) ||
+	    drm_rect_width(&new->uapi.dst) != drm_rect_width(&cur->uapi.dst) ||
+	    drm_rect_height(&new->uapi.dst) != drm_rect_height(&cur->uapi.dst))
+		return true;
+
+	return false;
+}
+
+static bool intel_plane_is_scaled(const struct intel_plane_state *plane_state)
+{
+	int src_w = drm_rect_width(&plane_state->uapi.src) >> 16;
+	int src_h = drm_rect_height(&plane_state->uapi.src) >> 16;
+	int dst_w = drm_rect_width(&plane_state->uapi.dst);
+	int dst_h = drm_rect_height(&plane_state->uapi.dst);
+
+	return src_w != dst_w || src_h != dst_h;
+}
+
+static bool intel_plane_do_async_flip(struct intel_plane *plane,
+				      const struct intel_crtc_state *old_crtc_state,
+				      const struct intel_crtc_state *new_crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(plane->base.dev);
+
+	if (!plane->async_flip)
+		return false;
+
+	if (!new_crtc_state->uapi.async_flip)
+		return false;
+
+	/*
+	 * In platforms after DISPLAY13, we might need to override
+	 * first async flip in order to change watermark levels
+	 * as part of optimization.
+	 * So for those, we are checking if this is a first async flip.
+	 * For platforms earlier than DISPLAY13 we always do async flip.
+	 */
+	return DISPLAY_VER(i915) < 13 || old_crtc_state->uapi.async_flip;
+}
+
+static int intel_plane_atomic_calc_changes(const struct intel_crtc_state *old_crtc_state,
+					   struct intel_crtc_state *new_crtc_state,
+					   const struct intel_plane_state *old_plane_state,
+					   struct intel_plane_state *new_plane_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->uapi.crtc);
+	struct intel_plane *plane = to_intel_plane(new_plane_state->uapi.plane);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	bool mode_changed = intel_crtc_needs_modeset(new_crtc_state);
+	bool was_crtc_enabled = old_crtc_state->hw.active;
+	bool is_crtc_enabled = new_crtc_state->hw.active;
+	bool turn_off, turn_on, visible, was_visible;
+	int ret;
+
+	if (DISPLAY_VER(dev_priv) >= 9 && plane->id != PLANE_CURSOR) {
+		ret = skl_update_scaler_plane(new_crtc_state, new_plane_state);
+		if (ret)
+			return ret;
+	}
+
+	was_visible = old_plane_state->uapi.visible;
+	visible = new_plane_state->uapi.visible;
+
+	if (!was_crtc_enabled && drm_WARN_ON(&dev_priv->drm, was_visible))
+		was_visible = false;
+
+	/*
+	 * Visibility is calculated as if the crtc was on, but
+	 * after scaler setup everything depends on it being off
+	 * when the crtc isn't active.
+	 *
+	 * FIXME this is wrong for watermarks. Watermarks should also
+	 * be computed as if the pipe would be active. Perhaps move
+	 * per-plane wm computation to the .check_plane() hook, and
+	 * only combine the results from all planes in the current place?
+	 */
+	if (!is_crtc_enabled) {
+		intel_plane_set_invisible(new_crtc_state, new_plane_state);
+		visible = false;
+	}
+
+	if (!was_visible && !visible)
+		return 0;
+
+	turn_off = was_visible && (!visible || mode_changed);
+	turn_on = visible && (!was_visible || mode_changed);
+
+	drm_dbg_atomic(&dev_priv->drm,
+		       "[CRTC:%d:%s] with [PLANE:%d:%s] visible %i -> %i, off %i, on %i, ms %i\n",
+		       crtc->base.base.id, crtc->base.name,
+		       plane->base.base.id, plane->base.name,
+		       was_visible, visible,
+		       turn_off, turn_on, mode_changed);
+
+	if (turn_on) {
+		if (DISPLAY_VER(dev_priv) < 5 && !IS_G4X(dev_priv))
+			new_crtc_state->update_wm_pre = true;
+
+		/* must disable cxsr around plane enable/disable */
+		if (plane->id != PLANE_CURSOR)
+			new_crtc_state->disable_cxsr = true;
+	} else if (turn_off) {
+		if (DISPLAY_VER(dev_priv) < 5 && !IS_G4X(dev_priv))
+			new_crtc_state->update_wm_post = true;
+
+		/* must disable cxsr around plane enable/disable */
+		if (plane->id != PLANE_CURSOR)
+			new_crtc_state->disable_cxsr = true;
+	} else if (intel_wm_need_update(old_plane_state, new_plane_state)) {
+		if (DISPLAY_VER(dev_priv) < 5 && !IS_G4X(dev_priv)) {
+			/* FIXME bollocks */
+			new_crtc_state->update_wm_pre = true;
+			new_crtc_state->update_wm_post = true;
+		}
+	}
+
+	if (visible || was_visible)
+		new_crtc_state->fb_bits |= plane->frontbuffer_bit;
+
+	/*
+	 * ILK/SNB DVSACNTR/Sprite Enable
+	 * IVB SPR_CTL/Sprite Enable
+	 * "When in Self Refresh Big FIFO mode, a write to enable the
+	 *  plane will be internally buffered and delayed while Big FIFO
+	 *  mode is exiting."
+	 *
+	 * Which means that enabling the sprite can take an extra frame
+	 * when we start in big FIFO mode (LP1+). Thus we need to drop
+	 * down to LP0 and wait for vblank in order to make sure the
+	 * sprite gets enabled on the next vblank after the register write.
+	 * Doing otherwise would risk enabling the sprite one frame after
+	 * we've already signalled flip completion. We can resume LP1+
+	 * once the sprite has been enabled.
+	 *
+	 *
+	 * WaCxSRDisabledForSpriteScaling:ivb
+	 * IVB SPR_SCALE/Scaling Enable
+	 * "Low Power watermarks must be disabled for at least one
+	 *  frame before enabling sprite scaling, and kept disabled
+	 *  until sprite scaling is disabled."
+	 *
+	 * ILK/SNB DVSASCALE/Scaling Enable
+	 * "When in Self Refresh Big FIFO mode, scaling enable will be
+	 *  masked off while Big FIFO mode is exiting."
+	 *
+	 * Despite the w/a only being listed for IVB we assume that
+	 * the ILK/SNB note has similar ramifications, hence we apply
+	 * the w/a on all three platforms.
+	 *
+	 * With experimental results seems this is needed also for primary
+	 * plane, not only sprite plane.
+	 */
+	if (plane->id != PLANE_CURSOR &&
+	    (IS_IRONLAKE(dev_priv) || IS_SANDYBRIDGE(dev_priv) ||
+	     IS_IVYBRIDGE(dev_priv)) &&
+	    (turn_on || (!intel_plane_is_scaled(old_plane_state) &&
+			 intel_plane_is_scaled(new_plane_state))))
+		new_crtc_state->disable_lp_wm = true;
+
+	if (intel_plane_do_async_flip(plane, old_crtc_state, new_crtc_state))
+		new_crtc_state->do_async_flip = true;
+
+	return 0;
+}
+
+int intel_plane_atomic_check_with_state(const struct intel_crtc_state *old_crtc_state,
+					struct intel_crtc_state *new_crtc_state,
+					const struct intel_plane_state *old_plane_state,
+					struct intel_plane_state *new_plane_state)
+{
+	struct intel_plane *plane = to_intel_plane(new_plane_state->uapi.plane);
+	const struct drm_framebuffer *fb = new_plane_state->hw.fb;
+	int ret;
+
+	intel_plane_set_invisible(new_crtc_state, new_plane_state);
+	new_crtc_state->enabled_planes &= ~BIT(plane->id);
+
+	if (!new_plane_state->hw.crtc && !old_plane_state->hw.crtc)
+		return 0;
+
+	ret = plane->check_plane(new_crtc_state, new_plane_state);
+	if (ret)
+		return ret;
+
+	if (fb)
+		new_crtc_state->enabled_planes |= BIT(plane->id);
+
+	/* FIXME pre-g4x don't work like this */
+	if (new_plane_state->uapi.visible)
+		new_crtc_state->active_planes |= BIT(plane->id);
+
+	if (new_plane_state->uapi.visible &&
+	    intel_plane_is_scaled(new_plane_state))
+		new_crtc_state->scaled_planes |= BIT(plane->id);
+
+	if (new_plane_state->uapi.visible &&
+	    intel_format_info_is_yuv_semiplanar(fb->format, fb->modifier))
+		new_crtc_state->nv12_planes |= BIT(plane->id);
+
+	if (new_plane_state->uapi.visible &&
+	    fb->format->format == DRM_FORMAT_C8)
+		new_crtc_state->c8_planes |= BIT(plane->id);
+
+	if (new_plane_state->uapi.visible || old_plane_state->uapi.visible)
+		new_crtc_state->update_planes |= BIT(plane->id);
+
+	if (new_plane_state->uapi.visible &&
+	    intel_format_info_is_yuv_semiplanar(fb->format, fb->modifier)) {
+		new_crtc_state->data_rate_y[plane->id] =
+			intel_plane_data_rate(new_crtc_state, new_plane_state, 0);
+		new_crtc_state->data_rate[plane->id] =
+			intel_plane_data_rate(new_crtc_state, new_plane_state, 1);
+
+		new_crtc_state->rel_data_rate_y[plane->id] =
+			intel_plane_relative_data_rate(new_crtc_state,
+						       new_plane_state, 0);
+		new_crtc_state->rel_data_rate[plane->id] =
+			intel_plane_relative_data_rate(new_crtc_state,
+						       new_plane_state, 1);
+	} else if (new_plane_state->uapi.visible) {
+		new_crtc_state->data_rate[plane->id] =
+			intel_plane_data_rate(new_crtc_state, new_plane_state, 0);
+
+		new_crtc_state->rel_data_rate[plane->id] =
+			intel_plane_relative_data_rate(new_crtc_state,
+						       new_plane_state, 0);
+	}
+
+	return intel_plane_atomic_calc_changes(old_crtc_state, new_crtc_state,
+					       old_plane_state, new_plane_state);
+}
+
+static struct intel_plane *
+intel_crtc_get_plane(struct intel_crtc *crtc, enum plane_id plane_id)
+{
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	struct intel_plane *plane;
+
+	for_each_intel_plane_on_crtc(&i915->drm, crtc, plane) {
+		if (plane->id == plane_id)
+			return plane;
+	}
+
+	return NULL;
+}
+
+int intel_plane_atomic_check(struct intel_atomic_state *state,
+			     struct intel_plane *plane)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	struct intel_plane_state *new_plane_state =
+		intel_atomic_get_new_plane_state(state, plane);
+	const struct intel_plane_state *old_plane_state =
+		intel_atomic_get_old_plane_state(state, plane);
+	const struct intel_plane_state *new_master_plane_state;
+	struct intel_crtc *crtc = intel_crtc_for_pipe(i915, plane->pipe);
+	const struct intel_crtc_state *old_crtc_state =
+		intel_atomic_get_old_crtc_state(state, crtc);
+	struct intel_crtc_state *new_crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+
+	if (new_crtc_state && intel_crtc_is_bigjoiner_slave(new_crtc_state)) {
+		struct intel_crtc *master_crtc =
+			intel_master_crtc(new_crtc_state);
+		struct intel_plane *master_plane =
+			intel_crtc_get_plane(master_crtc, plane->id);
+
+		new_master_plane_state =
+			intel_atomic_get_new_plane_state(state, master_plane);
+	} else {
+		new_master_plane_state = new_plane_state;
+	}
+
+	intel_plane_copy_uapi_to_hw_state(new_plane_state,
+					  new_master_plane_state,
+					  crtc);
+
+	new_plane_state->uapi.visible = false;
+	if (!new_crtc_state)
+		return 0;
+
+	return intel_plane_atomic_check_with_state(old_crtc_state,
+						   new_crtc_state,
+						   old_plane_state,
+						   new_plane_state);
+}
+
+static struct intel_plane *
+skl_next_plane_to_commit(struct intel_atomic_state *state,
+			 struct intel_crtc *crtc,
+			 struct skl_ddb_entry ddb[I915_MAX_PLANES],
+			 struct skl_ddb_entry ddb_y[I915_MAX_PLANES],
+			 unsigned int *update_mask)
+{
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	struct intel_plane_state *plane_state;
+	struct intel_plane *plane;
+	int i;
+
+	if (*update_mask == 0)
+		return NULL;
+
+	for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
+		enum plane_id plane_id = plane->id;
+
+		if (crtc->pipe != plane->pipe ||
+		    !(*update_mask & BIT(plane_id)))
+			continue;
+
+		if (skl_ddb_allocation_overlaps(&crtc_state->wm.skl.plane_ddb[plane_id],
+						ddb, I915_MAX_PLANES, plane_id) ||
+		    skl_ddb_allocation_overlaps(&crtc_state->wm.skl.plane_ddb_y[plane_id],
+						ddb_y, I915_MAX_PLANES, plane_id))
+			continue;
+
+		*update_mask &= ~BIT(plane_id);
+		ddb[plane_id] = crtc_state->wm.skl.plane_ddb[plane_id];
+		ddb_y[plane_id] = crtc_state->wm.skl.plane_ddb_y[plane_id];
+
+		return plane;
+	}
+
+	/* should never happen */
+	drm_WARN_ON(state->base.dev, 1);
+
+	return NULL;
+}
+
+void intel_plane_update_noarm(struct intel_plane *plane,
+			      const struct intel_crtc_state *crtc_state,
+			      const struct intel_plane_state *plane_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+
+	trace_intel_plane_update_noarm(&plane->base, crtc);
+
+	if (plane->update_noarm)
+		plane->update_noarm(plane, crtc_state, plane_state);
+}
+
+void intel_plane_update_arm(struct intel_plane *plane,
+			    const struct intel_crtc_state *crtc_state,
+			    const struct intel_plane_state *plane_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+
+	trace_intel_plane_update_arm(&plane->base, crtc);
+
+	if (crtc_state->do_async_flip && plane->async_flip)
+		plane->async_flip(plane, crtc_state, plane_state, true);
+	else
+		plane->update_arm(plane, crtc_state, plane_state);
+}
+
+void intel_plane_disable_arm(struct intel_plane *plane,
+			     const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+
+	trace_intel_plane_disable_arm(&plane->base, crtc);
+	plane->disable_arm(plane, crtc_state);
+}
+
+void intel_crtc_planes_update_noarm(struct intel_atomic_state *state,
+				    struct intel_crtc *crtc)
+{
+	struct intel_crtc_state *new_crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	u32 update_mask = new_crtc_state->update_planes;
+	struct intel_plane_state *new_plane_state;
+	struct intel_plane *plane;
+	int i;
+
+	if (new_crtc_state->do_async_flip)
+		return;
+
+	/*
+	 * Since we only write non-arming registers here,
+	 * the order does not matter even for skl+.
+	 */
+	for_each_new_intel_plane_in_state(state, plane, new_plane_state, i) {
+		if (crtc->pipe != plane->pipe ||
+		    !(update_mask & BIT(plane->id)))
+			continue;
+
+		/* TODO: for mailbox updates this should be skipped */
+		if (new_plane_state->uapi.visible ||
+		    new_plane_state->planar_slave)
+			intel_plane_update_noarm(plane, new_crtc_state, new_plane_state);
+	}
+}
+
+static void skl_crtc_planes_update_arm(struct intel_atomic_state *state,
+				       struct intel_crtc *crtc)
+{
+	struct intel_crtc_state *old_crtc_state =
+		intel_atomic_get_old_crtc_state(state, crtc);
+	struct intel_crtc_state *new_crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	struct skl_ddb_entry ddb[I915_MAX_PLANES];
+	struct skl_ddb_entry ddb_y[I915_MAX_PLANES];
+	u32 update_mask = new_crtc_state->update_planes;
+	struct intel_plane *plane;
+
+	memcpy(ddb, old_crtc_state->wm.skl.plane_ddb,
+	       sizeof(old_crtc_state->wm.skl.plane_ddb));
+	memcpy(ddb_y, old_crtc_state->wm.skl.plane_ddb_y,
+	       sizeof(old_crtc_state->wm.skl.plane_ddb_y));
+
+	while ((plane = skl_next_plane_to_commit(state, crtc, ddb, ddb_y, &update_mask))) {
+		struct intel_plane_state *new_plane_state =
+			intel_atomic_get_new_plane_state(state, plane);
+
+		/*
+		 * TODO: for mailbox updates intel_plane_update_noarm()
+		 * would have to be called here as well.
+		 */
+		if (new_plane_state->uapi.visible ||
+		    new_plane_state->planar_slave)
+			intel_plane_update_arm(plane, new_crtc_state, new_plane_state);
+		else
+			intel_plane_disable_arm(plane, new_crtc_state);
+	}
+}
+
+static void i9xx_crtc_planes_update_arm(struct intel_atomic_state *state,
+					struct intel_crtc *crtc)
+{
+	struct intel_crtc_state *new_crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	u32 update_mask = new_crtc_state->update_planes;
+	struct intel_plane_state *new_plane_state;
+	struct intel_plane *plane;
+	int i;
+
+	for_each_new_intel_plane_in_state(state, plane, new_plane_state, i) {
+		if (crtc->pipe != plane->pipe ||
+		    !(update_mask & BIT(plane->id)))
+			continue;
+
+		/*
+		 * TODO: for mailbox updates intel_plane_update_noarm()
+		 * would have to be called here as well.
+		 */
+		if (new_plane_state->uapi.visible)
+			intel_plane_update_arm(plane, new_crtc_state, new_plane_state);
+		else
+			intel_plane_disable_arm(plane, new_crtc_state);
+	}
+}
+
+void intel_crtc_planes_update_arm(struct intel_atomic_state *state,
+				  struct intel_crtc *crtc)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+
+	if (DISPLAY_VER(i915) >= 9)
+		skl_crtc_planes_update_arm(state, crtc);
+	else
+		i9xx_crtc_planes_update_arm(state, crtc);
+}
+
+int intel_atomic_plane_check_clipping(struct intel_plane_state *plane_state,
+				      struct intel_crtc_state *crtc_state,
+				      int min_scale, int max_scale,
+				      bool can_position)
+{
+	struct drm_i915_private *i915 = to_i915(plane_state->uapi.plane->dev);
+	struct drm_framebuffer *fb = plane_state->hw.fb;
+	struct drm_rect *src = &plane_state->uapi.src;
+	struct drm_rect *dst = &plane_state->uapi.dst;
+	const struct drm_rect *clip = &crtc_state->pipe_src;
+	unsigned int rotation = plane_state->hw.rotation;
+	int hscale, vscale;
+
+	if (!fb) {
+		plane_state->uapi.visible = false;
+		return 0;
+	}
+
+	drm_rect_rotate(src, fb->width << 16, fb->height << 16, rotation);
+
+	/* Check scaling */
+	hscale = drm_rect_calc_hscale(src, dst, min_scale, max_scale);
+	vscale = drm_rect_calc_vscale(src, dst, min_scale, max_scale);
+	if (hscale < 0 || vscale < 0) {
+		drm_dbg_kms(&i915->drm, "Invalid scaling of plane\n");
+		drm_rect_debug_print("src: ", src, true);
+		drm_rect_debug_print("dst: ", dst, false);
+		return -ERANGE;
+	}
+
+	/*
+	 * FIXME: This might need further adjustment for seamless scaling
+	 * with phase information, for the 2p2 and 2p1 scenarios.
+	 */
+	plane_state->uapi.visible = drm_rect_clip_scaled(src, dst, clip);
+
+	drm_rect_rotate_inv(src, fb->width << 16, fb->height << 16, rotation);
+
+	if (!can_position && plane_state->uapi.visible &&
+	    !drm_rect_equals(dst, clip)) {
+		drm_dbg_kms(&i915->drm, "Plane must cover entire CRTC\n");
+		drm_rect_debug_print("dst: ", dst, false);
+		drm_rect_debug_print("clip: ", clip, false);
+		return -EINVAL;
+	}
+
+	/* final plane coordinates will be relative to the plane's pipe */
+	drm_rect_translate(dst, -clip->x1, -clip->y1);
+
+	return 0;
+}
+
+struct wait_rps_boost {
+	struct wait_queue_entry wait;
+
+	struct drm_crtc *crtc;
+	struct i915_request *request;
+};
+
+static int do_rps_boost(struct wait_queue_entry *_wait,
+			unsigned mode, int sync, void *key)
+{
+	struct wait_rps_boost *wait = container_of(_wait, typeof(*wait), wait);
+	struct i915_request *rq = wait->request;
+
+	/*
+	 * If we missed the vblank, but the request is already running it
+	 * is reasonable to assume that it will complete before the next
+	 * vblank without our intervention, so leave RPS alone.
+	 */
+	if (!i915_request_started(rq))
+		intel_rps_boost(rq);
+	i915_request_put(rq);
+
+	drm_crtc_vblank_put(wait->crtc);
+
+	list_del(&wait->wait.entry);
+	kfree(wait);
+	return 1;
+}
+
+static void add_rps_boost_after_vblank(struct drm_crtc *crtc,
+				       struct dma_fence *fence)
+{
+	struct wait_rps_boost *wait;
+
+	if (!dma_fence_is_i915(fence))
+		return;
+
+	if (DISPLAY_VER(to_i915(crtc->dev)) < 6)
+		return;
+
+	if (drm_crtc_vblank_get(crtc))
+		return;
+
+	wait = kmalloc(sizeof(*wait), GFP_KERNEL);
+	if (!wait) {
+		drm_crtc_vblank_put(crtc);
+		return;
+	}
+
+	wait->request = to_request(dma_fence_get(fence));
+	wait->crtc = crtc;
+
+	wait->wait.func = do_rps_boost;
+	wait->wait.flags = 0;
+
+	add_wait_queue(drm_crtc_vblank_waitqueue(crtc), &wait->wait);
+}
+
+/**
+ * intel_prepare_plane_fb - Prepare fb for usage on plane
+ * @_plane: drm plane to prepare for
+ * @_new_plane_state: the plane state being prepared
+ *
+ * Prepares a framebuffer for usage on a display plane.  Generally this
+ * involves pinning the underlying object and updating the frontbuffer tracking
+ * bits.  Some older platforms need special physical address handling for
+ * cursor planes.
+ *
+ * Returns 0 on success, negative error code on failure.
+ */
+static int
+intel_prepare_plane_fb(struct drm_plane *_plane,
+		       struct drm_plane_state *_new_plane_state)
+{
+	struct i915_sched_attr attr = { .priority = I915_PRIORITY_DISPLAY };
+	struct intel_plane *plane = to_intel_plane(_plane);
+	struct intel_plane_state *new_plane_state =
+		to_intel_plane_state(_new_plane_state);
+	struct intel_atomic_state *state =
+		to_intel_atomic_state(new_plane_state->uapi.state);
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	const struct intel_plane_state *old_plane_state =
+		intel_atomic_get_old_plane_state(state, plane);
+	struct drm_i915_gem_object *obj = intel_fb_obj(new_plane_state->hw.fb);
+	struct drm_i915_gem_object *old_obj = intel_fb_obj(old_plane_state->hw.fb);
+	int ret;
+
+	if (old_obj) {
+		const struct intel_crtc_state *new_crtc_state =
+			intel_atomic_get_new_crtc_state(state,
+							to_intel_crtc(old_plane_state->hw.crtc));
+
+		/* Big Hammer, we also need to ensure that any pending
+		 * MI_WAIT_FOR_EVENT inside a user batch buffer on the
+		 * current scanout is retired before unpinning the old
+		 * framebuffer. Note that we rely on userspace rendering
+		 * into the buffer attached to the pipe they are waiting
+		 * on. If not, userspace generates a GPU hang with IPEHR
+		 * point to the MI_WAIT_FOR_EVENT.
+		 *
+		 * This should only fail upon a hung GPU, in which case we
+		 * can safely continue.
+		 */
+		if (new_crtc_state && intel_crtc_needs_modeset(new_crtc_state)) {
+			ret = i915_sw_fence_await_reservation(&state->commit_ready,
+							      old_obj->base.resv, NULL,
+							      false, 0,
+							      GFP_KERNEL);
+			if (ret < 0)
+				return ret;
+		}
+	}
+
+	if (new_plane_state->uapi.fence) { /* explicit fencing */
+		i915_gem_fence_wait_priority(new_plane_state->uapi.fence,
+					     &attr);
+		ret = i915_sw_fence_await_dma_fence(&state->commit_ready,
+						    new_plane_state->uapi.fence,
+						    i915_fence_timeout(dev_priv),
+						    GFP_KERNEL);
+		if (ret < 0)
+			return ret;
+	}
+
+	if (!obj)
+		return 0;
+
+
+	ret = intel_plane_pin_fb(new_plane_state);
+	if (ret)
+		return ret;
+
+	i915_gem_object_wait_priority(obj, 0, &attr);
+
+	if (!new_plane_state->uapi.fence) { /* implicit fencing */
+		struct dma_resv_iter cursor;
+		struct dma_fence *fence;
+
+		ret = i915_sw_fence_await_reservation(&state->commit_ready,
+						      obj->base.resv, NULL,
+						      false,
+						      i915_fence_timeout(dev_priv),
+						      GFP_KERNEL);
+		if (ret < 0)
+			goto unpin_fb;
+
+		dma_resv_iter_begin(&cursor, obj->base.resv,
+				    DMA_RESV_USAGE_WRITE);
+		dma_resv_for_each_fence_unlocked(&cursor, fence) {
+			add_rps_boost_after_vblank(new_plane_state->hw.crtc,
+						   fence);
+		}
+		dma_resv_iter_end(&cursor);
+	} else {
+		add_rps_boost_after_vblank(new_plane_state->hw.crtc,
+					   new_plane_state->uapi.fence);
+	}
+
+	/*
+	 * We declare pageflips to be interactive and so merit a small bias
+	 * towards upclocking to deliver the frame on time. By only changing
+	 * the RPS thresholds to sample more regularly and aim for higher
+	 * clocks we can hopefully deliver low power workloads (like kodi)
+	 * that are not quite steady state without resorting to forcing
+	 * maximum clocks following a vblank miss (see do_rps_boost()).
+	 */
+	if (!state->rps_interactive) {
+		intel_rps_mark_interactive(&to_gt(dev_priv)->rps, true);
+		state->rps_interactive = true;
+	}
+
+	return 0;
+
+unpin_fb:
+	intel_plane_unpin_fb(new_plane_state);
+
+	return ret;
+}
+
+/**
+ * intel_cleanup_plane_fb - Cleans up an fb after plane use
+ * @plane: drm plane to clean up for
+ * @_old_plane_state: the state from the previous modeset
+ *
+ * Cleans up a framebuffer that has just been removed from a plane.
+ */
+static void
+intel_cleanup_plane_fb(struct drm_plane *plane,
+		       struct drm_plane_state *_old_plane_state)
+{
+	struct intel_plane_state *old_plane_state =
+		to_intel_plane_state(_old_plane_state);
+	struct intel_atomic_state *state =
+		to_intel_atomic_state(old_plane_state->uapi.state);
+	struct drm_i915_private *dev_priv = to_i915(plane->dev);
+	struct drm_i915_gem_object *obj = intel_fb_obj(old_plane_state->hw.fb);
+
+	if (!obj)
+		return;
+
+	if (state->rps_interactive) {
+		intel_rps_mark_interactive(&to_gt(dev_priv)->rps, false);
+		state->rps_interactive = false;
+	}
+
+	/* Should only be called after a successful intel_prepare_plane_fb()! */
+	intel_plane_unpin_fb(old_plane_state);
+}
+
+static const struct drm_plane_helper_funcs intel_plane_helper_funcs = {
+	.prepare_fb = intel_prepare_plane_fb,
+	.cleanup_fb = intel_cleanup_plane_fb,
+};
+
+void intel_plane_helper_add(struct intel_plane *plane)
+{
+	drm_plane_helper_add(&plane->base, &intel_plane_helper_funcs);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_atomic_plane.h b/drivers/gpu/drm/i915/display/intel_atomic_plane.h
new file mode 100644
index 000000000..74b6d3b16
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_atomic_plane.h
@@ -0,0 +1,69 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_ATOMIC_PLANE_H__
+#define __INTEL_ATOMIC_PLANE_H__
+
+#include <linux/types.h>
+
+struct drm_plane;
+struct drm_property;
+struct drm_rect;
+struct intel_atomic_state;
+struct intel_crtc;
+struct intel_crtc_state;
+struct intel_plane;
+struct intel_plane_state;
+enum plane_id;
+
+unsigned int intel_adjusted_rate(const struct drm_rect *src,
+				 const struct drm_rect *dst,
+				 unsigned int rate);
+unsigned int intel_plane_pixel_rate(const struct intel_crtc_state *crtc_state,
+				    const struct intel_plane_state *plane_state);
+
+unsigned int intel_plane_data_rate(const struct intel_crtc_state *crtc_state,
+				   const struct intel_plane_state *plane_state,
+				   int color_plane);
+void intel_plane_copy_uapi_to_hw_state(struct intel_plane_state *plane_state,
+				       const struct intel_plane_state *from_plane_state,
+				       struct intel_crtc *crtc);
+void intel_plane_copy_hw_state(struct intel_plane_state *plane_state,
+			       const struct intel_plane_state *from_plane_state);
+void intel_plane_update_noarm(struct intel_plane *plane,
+			      const struct intel_crtc_state *crtc_state,
+			      const struct intel_plane_state *plane_state);
+void intel_plane_update_arm(struct intel_plane *plane,
+			    const struct intel_crtc_state *crtc_state,
+			    const struct intel_plane_state *plane_state);
+void intel_plane_disable_arm(struct intel_plane *plane,
+			     const struct intel_crtc_state *crtc_state);
+struct intel_plane *intel_plane_alloc(void);
+void intel_plane_free(struct intel_plane *plane);
+struct drm_plane_state *intel_plane_duplicate_state(struct drm_plane *plane);
+void intel_plane_destroy_state(struct drm_plane *plane,
+			       struct drm_plane_state *state);
+void intel_crtc_planes_update_noarm(struct intel_atomic_state *state,
+				    struct intel_crtc *crtc);
+void intel_crtc_planes_update_arm(struct intel_atomic_state *state,
+				  struct intel_crtc *crtc);
+int intel_plane_atomic_check_with_state(const struct intel_crtc_state *old_crtc_state,
+					struct intel_crtc_state *crtc_state,
+					const struct intel_plane_state *old_plane_state,
+					struct intel_plane_state *intel_state);
+int intel_plane_atomic_check(struct intel_atomic_state *state,
+			     struct intel_plane *plane);
+int intel_plane_calc_min_cdclk(struct intel_atomic_state *state,
+			       struct intel_plane *plane,
+			       bool *need_cdclk_calc);
+int intel_atomic_plane_check_clipping(struct intel_plane_state *plane_state,
+				      struct intel_crtc_state *crtc_state,
+				      int min_scale, int max_scale,
+				      bool can_position);
+void intel_plane_set_invisible(struct intel_crtc_state *crtc_state,
+			       struct intel_plane_state *plane_state);
+void intel_plane_helper_add(struct intel_plane *plane);
+
+#endif /* __INTEL_ATOMIC_PLANE_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_audio.c b/drivers/gpu/drm/i915/display/intel_audio.c
new file mode 100644
index 000000000..aacbc6da8
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_audio.c
@@ -0,0 +1,1410 @@
+/*
+ * Copyright © 2014 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <linux/component.h>
+#include <linux/kernel.h>
+
+#include <drm/drm_edid.h>
+#include <drm/i915_component.h>
+
+#include "i915_drv.h"
+#include "intel_atomic.h"
+#include "intel_audio.h"
+#include "intel_audio_regs.h"
+#include "intel_cdclk.h"
+#include "intel_crtc.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_lpe_audio.h"
+
+/**
+ * DOC: High Definition Audio over HDMI and Display Port
+ *
+ * The graphics and audio drivers together support High Definition Audio over
+ * HDMI and Display Port. The audio programming sequences are divided into audio
+ * codec and controller enable and disable sequences. The graphics driver
+ * handles the audio codec sequences, while the audio driver handles the audio
+ * controller sequences.
+ *
+ * The disable sequences must be performed before disabling the transcoder or
+ * port. The enable sequences may only be performed after enabling the
+ * transcoder and port, and after completed link training. Therefore the audio
+ * enable/disable sequences are part of the modeset sequence.
+ *
+ * The codec and controller sequences could be done either parallel or serial,
+ * but generally the ELDV/PD change in the codec sequence indicates to the audio
+ * driver that the controller sequence should start. Indeed, most of the
+ * co-operation between the graphics and audio drivers is handled via audio
+ * related registers. (The notable exception is the power management, not
+ * covered here.)
+ *
+ * The struct &i915_audio_component is used to interact between the graphics
+ * and audio drivers. The struct &i915_audio_component_ops @ops in it is
+ * defined in graphics driver and called in audio driver. The
+ * struct &i915_audio_component_audio_ops @audio_ops is called from i915 driver.
+ */
+
+struct intel_audio_funcs {
+	void (*audio_codec_enable)(struct intel_encoder *encoder,
+				   const struct intel_crtc_state *crtc_state,
+				   const struct drm_connector_state *conn_state);
+	void (*audio_codec_disable)(struct intel_encoder *encoder,
+				    const struct intel_crtc_state *old_crtc_state,
+				    const struct drm_connector_state *old_conn_state);
+};
+
+/* DP N/M table */
+#define LC_810M	810000
+#define LC_540M	540000
+#define LC_270M	270000
+#define LC_162M	162000
+
+struct dp_aud_n_m {
+	int sample_rate;
+	int clock;
+	u16 m;
+	u16 n;
+};
+
+struct hdmi_aud_ncts {
+	int sample_rate;
+	int clock;
+	int n;
+	int cts;
+};
+
+/* Values according to DP 1.4 Table 2-104 */
+static const struct dp_aud_n_m dp_aud_n_m[] = {
+	{ 32000, LC_162M, 1024, 10125 },
+	{ 44100, LC_162M, 784, 5625 },
+	{ 48000, LC_162M, 512, 3375 },
+	{ 64000, LC_162M, 2048, 10125 },
+	{ 88200, LC_162M, 1568, 5625 },
+	{ 96000, LC_162M, 1024, 3375 },
+	{ 128000, LC_162M, 4096, 10125 },
+	{ 176400, LC_162M, 3136, 5625 },
+	{ 192000, LC_162M, 2048, 3375 },
+	{ 32000, LC_270M, 1024, 16875 },
+	{ 44100, LC_270M, 784, 9375 },
+	{ 48000, LC_270M, 512, 5625 },
+	{ 64000, LC_270M, 2048, 16875 },
+	{ 88200, LC_270M, 1568, 9375 },
+	{ 96000, LC_270M, 1024, 5625 },
+	{ 128000, LC_270M, 4096, 16875 },
+	{ 176400, LC_270M, 3136, 9375 },
+	{ 192000, LC_270M, 2048, 5625 },
+	{ 32000, LC_540M, 1024, 33750 },
+	{ 44100, LC_540M, 784, 18750 },
+	{ 48000, LC_540M, 512, 11250 },
+	{ 64000, LC_540M, 2048, 33750 },
+	{ 88200, LC_540M, 1568, 18750 },
+	{ 96000, LC_540M, 1024, 11250 },
+	{ 128000, LC_540M, 4096, 33750 },
+	{ 176400, LC_540M, 3136, 18750 },
+	{ 192000, LC_540M, 2048, 11250 },
+	{ 32000, LC_810M, 1024, 50625 },
+	{ 44100, LC_810M, 784, 28125 },
+	{ 48000, LC_810M, 512, 16875 },
+	{ 64000, LC_810M, 2048, 50625 },
+	{ 88200, LC_810M, 1568, 28125 },
+	{ 96000, LC_810M, 1024, 16875 },
+	{ 128000, LC_810M, 4096, 50625 },
+	{ 176400, LC_810M, 3136, 28125 },
+	{ 192000, LC_810M, 2048, 16875 },
+};
+
+static const struct dp_aud_n_m *
+audio_config_dp_get_n_m(const struct intel_crtc_state *crtc_state, int rate)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(dp_aud_n_m); i++) {
+		if (rate == dp_aud_n_m[i].sample_rate &&
+		    crtc_state->port_clock == dp_aud_n_m[i].clock)
+			return &dp_aud_n_m[i];
+	}
+
+	return NULL;
+}
+
+static const struct {
+	int clock;
+	u32 config;
+} hdmi_audio_clock[] = {
+	{ 25175, AUD_CONFIG_PIXEL_CLOCK_HDMI_25175 },
+	{ 25200, AUD_CONFIG_PIXEL_CLOCK_HDMI_25200 }, /* default per bspec */
+	{ 27000, AUD_CONFIG_PIXEL_CLOCK_HDMI_27000 },
+	{ 27027, AUD_CONFIG_PIXEL_CLOCK_HDMI_27027 },
+	{ 54000, AUD_CONFIG_PIXEL_CLOCK_HDMI_54000 },
+	{ 54054, AUD_CONFIG_PIXEL_CLOCK_HDMI_54054 },
+	{ 74176, AUD_CONFIG_PIXEL_CLOCK_HDMI_74176 },
+	{ 74250, AUD_CONFIG_PIXEL_CLOCK_HDMI_74250 },
+	{ 148352, AUD_CONFIG_PIXEL_CLOCK_HDMI_148352 },
+	{ 148500, AUD_CONFIG_PIXEL_CLOCK_HDMI_148500 },
+	{ 296703, AUD_CONFIG_PIXEL_CLOCK_HDMI_296703 },
+	{ 297000, AUD_CONFIG_PIXEL_CLOCK_HDMI_297000 },
+	{ 593407, AUD_CONFIG_PIXEL_CLOCK_HDMI_593407 },
+	{ 594000, AUD_CONFIG_PIXEL_CLOCK_HDMI_594000 },
+};
+
+/* HDMI N/CTS table */
+#define TMDS_297M 297000
+#define TMDS_296M 296703
+#define TMDS_594M 594000
+#define TMDS_593M 593407
+
+static const struct hdmi_aud_ncts hdmi_aud_ncts_24bpp[] = {
+	{ 32000, TMDS_296M, 5824, 421875 },
+	{ 32000, TMDS_297M, 3072, 222750 },
+	{ 32000, TMDS_593M, 5824, 843750 },
+	{ 32000, TMDS_594M, 3072, 445500 },
+	{ 44100, TMDS_296M, 4459, 234375 },
+	{ 44100, TMDS_297M, 4704, 247500 },
+	{ 44100, TMDS_593M, 8918, 937500 },
+	{ 44100, TMDS_594M, 9408, 990000 },
+	{ 88200, TMDS_296M, 8918, 234375 },
+	{ 88200, TMDS_297M, 9408, 247500 },
+	{ 88200, TMDS_593M, 17836, 937500 },
+	{ 88200, TMDS_594M, 18816, 990000 },
+	{ 176400, TMDS_296M, 17836, 234375 },
+	{ 176400, TMDS_297M, 18816, 247500 },
+	{ 176400, TMDS_593M, 35672, 937500 },
+	{ 176400, TMDS_594M, 37632, 990000 },
+	{ 48000, TMDS_296M, 5824, 281250 },
+	{ 48000, TMDS_297M, 5120, 247500 },
+	{ 48000, TMDS_593M, 5824, 562500 },
+	{ 48000, TMDS_594M, 6144, 594000 },
+	{ 96000, TMDS_296M, 11648, 281250 },
+	{ 96000, TMDS_297M, 10240, 247500 },
+	{ 96000, TMDS_593M, 11648, 562500 },
+	{ 96000, TMDS_594M, 12288, 594000 },
+	{ 192000, TMDS_296M, 23296, 281250 },
+	{ 192000, TMDS_297M, 20480, 247500 },
+	{ 192000, TMDS_593M, 23296, 562500 },
+	{ 192000, TMDS_594M, 24576, 594000 },
+};
+
+/* Appendix C - N & CTS values for deep color from HDMI 2.0 spec*/
+/* HDMI N/CTS table for 10 bit deep color(30 bpp)*/
+#define TMDS_371M 371250
+#define TMDS_370M 370878
+
+static const struct hdmi_aud_ncts hdmi_aud_ncts_30bpp[] = {
+	{ 32000, TMDS_370M, 5824, 527344 },
+	{ 32000, TMDS_371M, 6144, 556875 },
+	{ 44100, TMDS_370M, 8918, 585938 },
+	{ 44100, TMDS_371M, 4704, 309375 },
+	{ 88200, TMDS_370M, 17836, 585938 },
+	{ 88200, TMDS_371M, 9408, 309375 },
+	{ 176400, TMDS_370M, 35672, 585938 },
+	{ 176400, TMDS_371M, 18816, 309375 },
+	{ 48000, TMDS_370M, 11648, 703125 },
+	{ 48000, TMDS_371M, 5120, 309375 },
+	{ 96000, TMDS_370M, 23296, 703125 },
+	{ 96000, TMDS_371M, 10240, 309375 },
+	{ 192000, TMDS_370M, 46592, 703125 },
+	{ 192000, TMDS_371M, 20480, 309375 },
+};
+
+/* HDMI N/CTS table for 12 bit deep color(36 bpp)*/
+#define TMDS_445_5M 445500
+#define TMDS_445M 445054
+
+static const struct hdmi_aud_ncts hdmi_aud_ncts_36bpp[] = {
+	{ 32000, TMDS_445M, 5824, 632813 },
+	{ 32000, TMDS_445_5M, 4096, 445500 },
+	{ 44100, TMDS_445M, 8918, 703125 },
+	{ 44100, TMDS_445_5M, 4704, 371250 },
+	{ 88200, TMDS_445M, 17836, 703125 },
+	{ 88200, TMDS_445_5M, 9408, 371250 },
+	{ 176400, TMDS_445M, 35672, 703125 },
+	{ 176400, TMDS_445_5M, 18816, 371250 },
+	{ 48000, TMDS_445M, 5824, 421875 },
+	{ 48000, TMDS_445_5M, 5120, 371250 },
+	{ 96000, TMDS_445M, 11648, 421875 },
+	{ 96000, TMDS_445_5M, 10240, 371250 },
+	{ 192000, TMDS_445M, 23296, 421875 },
+	{ 192000, TMDS_445_5M, 20480, 371250 },
+};
+
+/* get AUD_CONFIG_PIXEL_CLOCK_HDMI_* value for mode */
+static u32 audio_config_hdmi_pixel_clock(const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+	const struct drm_display_mode *adjusted_mode =
+		&crtc_state->hw.adjusted_mode;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(hdmi_audio_clock); i++) {
+		if (adjusted_mode->crtc_clock == hdmi_audio_clock[i].clock)
+			break;
+	}
+
+	if (DISPLAY_VER(dev_priv) < 12 && adjusted_mode->crtc_clock > 148500)
+		i = ARRAY_SIZE(hdmi_audio_clock);
+
+	if (i == ARRAY_SIZE(hdmi_audio_clock)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "HDMI audio pixel clock setting for %d not found, falling back to defaults\n",
+			    adjusted_mode->crtc_clock);
+		i = 1;
+	}
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "Configuring HDMI audio for pixel clock %d (0x%08x)\n",
+		    hdmi_audio_clock[i].clock,
+		    hdmi_audio_clock[i].config);
+
+	return hdmi_audio_clock[i].config;
+}
+
+static int audio_config_hdmi_get_n(const struct intel_crtc_state *crtc_state,
+				   int rate)
+{
+	const struct hdmi_aud_ncts *hdmi_ncts_table;
+	int i, size;
+
+	if (crtc_state->pipe_bpp == 36) {
+		hdmi_ncts_table = hdmi_aud_ncts_36bpp;
+		size = ARRAY_SIZE(hdmi_aud_ncts_36bpp);
+	} else if (crtc_state->pipe_bpp == 30) {
+		hdmi_ncts_table = hdmi_aud_ncts_30bpp;
+		size = ARRAY_SIZE(hdmi_aud_ncts_30bpp);
+	} else {
+		hdmi_ncts_table = hdmi_aud_ncts_24bpp;
+		size = ARRAY_SIZE(hdmi_aud_ncts_24bpp);
+	}
+
+	for (i = 0; i < size; i++) {
+		if (rate == hdmi_ncts_table[i].sample_rate &&
+		    crtc_state->port_clock == hdmi_ncts_table[i].clock) {
+			return hdmi_ncts_table[i].n;
+		}
+	}
+	return 0;
+}
+
+static bool intel_eld_uptodate(struct drm_connector *connector,
+			       i915_reg_t reg_eldv, u32 bits_eldv,
+			       i915_reg_t reg_elda, u32 bits_elda,
+			       i915_reg_t reg_edid)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->dev);
+	const u8 *eld = connector->eld;
+	u32 tmp;
+	int i;
+
+	tmp = intel_de_read(dev_priv, reg_eldv);
+	tmp &= bits_eldv;
+
+	if (!tmp)
+		return false;
+
+	tmp = intel_de_read(dev_priv, reg_elda);
+	tmp &= ~bits_elda;
+	intel_de_write(dev_priv, reg_elda, tmp);
+
+	for (i = 0; i < drm_eld_size(eld) / 4; i++)
+		if (intel_de_read(dev_priv, reg_edid) != *((const u32 *)eld + i))
+			return false;
+
+	return true;
+}
+
+static void g4x_audio_codec_disable(struct intel_encoder *encoder,
+				    const struct intel_crtc_state *old_crtc_state,
+				    const struct drm_connector_state *old_conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	u32 eldv, tmp;
+
+	tmp = intel_de_read(dev_priv, G4X_AUD_VID_DID);
+	if (tmp == INTEL_AUDIO_DEVBLC || tmp == INTEL_AUDIO_DEVCL)
+		eldv = G4X_ELDV_DEVCL_DEVBLC;
+	else
+		eldv = G4X_ELDV_DEVCTG;
+
+	/* Invalidate ELD */
+	tmp = intel_de_read(dev_priv, G4X_AUD_CNTL_ST);
+	tmp &= ~eldv;
+	intel_de_write(dev_priv, G4X_AUD_CNTL_ST, tmp);
+}
+
+static void g4x_audio_codec_enable(struct intel_encoder *encoder,
+				   const struct intel_crtc_state *crtc_state,
+				   const struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct drm_connector *connector = conn_state->connector;
+	const u8 *eld = connector->eld;
+	u32 eldv;
+	u32 tmp;
+	int len, i;
+
+	tmp = intel_de_read(dev_priv, G4X_AUD_VID_DID);
+	if (tmp == INTEL_AUDIO_DEVBLC || tmp == INTEL_AUDIO_DEVCL)
+		eldv = G4X_ELDV_DEVCL_DEVBLC;
+	else
+		eldv = G4X_ELDV_DEVCTG;
+
+	if (intel_eld_uptodate(connector,
+			       G4X_AUD_CNTL_ST, eldv,
+			       G4X_AUD_CNTL_ST, G4X_ELD_ADDR_MASK,
+			       G4X_HDMIW_HDMIEDID))
+		return;
+
+	tmp = intel_de_read(dev_priv, G4X_AUD_CNTL_ST);
+	tmp &= ~(eldv | G4X_ELD_ADDR_MASK);
+	len = (tmp >> 9) & 0x1f;		/* ELD buffer size */
+	intel_de_write(dev_priv, G4X_AUD_CNTL_ST, tmp);
+
+	len = min(drm_eld_size(eld) / 4, len);
+	for (i = 0; i < len; i++)
+		intel_de_write(dev_priv, G4X_HDMIW_HDMIEDID,
+			       *((const u32 *)eld + i));
+
+	tmp = intel_de_read(dev_priv, G4X_AUD_CNTL_ST);
+	tmp |= eldv;
+	intel_de_write(dev_priv, G4X_AUD_CNTL_ST, tmp);
+}
+
+static void
+hsw_dp_audio_config_update(struct intel_encoder *encoder,
+			   const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct i915_audio_component *acomp = dev_priv->display.audio.component;
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+	enum port port = encoder->port;
+	const struct dp_aud_n_m *nm;
+	int rate;
+	u32 tmp;
+
+	rate = acomp ? acomp->aud_sample_rate[port] : 0;
+	nm = audio_config_dp_get_n_m(crtc_state, rate);
+	if (nm)
+		drm_dbg_kms(&dev_priv->drm, "using Maud %u, Naud %u\n", nm->m,
+			    nm->n);
+	else
+		drm_dbg_kms(&dev_priv->drm, "using automatic Maud, Naud\n");
+
+	tmp = intel_de_read(dev_priv, HSW_AUD_CFG(cpu_transcoder));
+	tmp &= ~AUD_CONFIG_N_VALUE_INDEX;
+	tmp &= ~AUD_CONFIG_PIXEL_CLOCK_HDMI_MASK;
+	tmp &= ~AUD_CONFIG_N_PROG_ENABLE;
+	tmp |= AUD_CONFIG_N_VALUE_INDEX;
+
+	if (nm) {
+		tmp &= ~AUD_CONFIG_N_MASK;
+		tmp |= AUD_CONFIG_N(nm->n);
+		tmp |= AUD_CONFIG_N_PROG_ENABLE;
+	}
+
+	intel_de_write(dev_priv, HSW_AUD_CFG(cpu_transcoder), tmp);
+
+	tmp = intel_de_read(dev_priv, HSW_AUD_M_CTS_ENABLE(cpu_transcoder));
+	tmp &= ~AUD_CONFIG_M_MASK;
+	tmp &= ~AUD_M_CTS_M_VALUE_INDEX;
+	tmp &= ~AUD_M_CTS_M_PROG_ENABLE;
+
+	if (nm) {
+		tmp |= nm->m;
+		tmp |= AUD_M_CTS_M_VALUE_INDEX;
+		tmp |= AUD_M_CTS_M_PROG_ENABLE;
+	}
+
+	intel_de_write(dev_priv, HSW_AUD_M_CTS_ENABLE(cpu_transcoder), tmp);
+}
+
+static void
+hsw_hdmi_audio_config_update(struct intel_encoder *encoder,
+			     const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct i915_audio_component *acomp = dev_priv->display.audio.component;
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+	enum port port = encoder->port;
+	int n, rate;
+	u32 tmp;
+
+	rate = acomp ? acomp->aud_sample_rate[port] : 0;
+
+	tmp = intel_de_read(dev_priv, HSW_AUD_CFG(cpu_transcoder));
+	tmp &= ~AUD_CONFIG_N_VALUE_INDEX;
+	tmp &= ~AUD_CONFIG_PIXEL_CLOCK_HDMI_MASK;
+	tmp &= ~AUD_CONFIG_N_PROG_ENABLE;
+	tmp |= audio_config_hdmi_pixel_clock(crtc_state);
+
+	n = audio_config_hdmi_get_n(crtc_state, rate);
+	if (n != 0) {
+		drm_dbg_kms(&dev_priv->drm, "using N %d\n", n);
+
+		tmp &= ~AUD_CONFIG_N_MASK;
+		tmp |= AUD_CONFIG_N(n);
+		tmp |= AUD_CONFIG_N_PROG_ENABLE;
+	} else {
+		drm_dbg_kms(&dev_priv->drm, "using automatic N\n");
+	}
+
+	intel_de_write(dev_priv, HSW_AUD_CFG(cpu_transcoder), tmp);
+
+	/*
+	 * Let's disable "Enable CTS or M Prog bit"
+	 * and let HW calculate the value
+	 */
+	tmp = intel_de_read(dev_priv, HSW_AUD_M_CTS_ENABLE(cpu_transcoder));
+	tmp &= ~AUD_M_CTS_M_PROG_ENABLE;
+	tmp &= ~AUD_M_CTS_M_VALUE_INDEX;
+	intel_de_write(dev_priv, HSW_AUD_M_CTS_ENABLE(cpu_transcoder), tmp);
+}
+
+static void
+hsw_audio_config_update(struct intel_encoder *encoder,
+			const struct intel_crtc_state *crtc_state)
+{
+	if (intel_crtc_has_dp_encoder(crtc_state))
+		hsw_dp_audio_config_update(encoder, crtc_state);
+	else
+		hsw_hdmi_audio_config_update(encoder, crtc_state);
+}
+
+static void hsw_audio_codec_disable(struct intel_encoder *encoder,
+				    const struct intel_crtc_state *old_crtc_state,
+				    const struct drm_connector_state *old_conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	enum transcoder cpu_transcoder = old_crtc_state->cpu_transcoder;
+	u32 tmp;
+
+	mutex_lock(&dev_priv->display.audio.mutex);
+
+	/* Disable timestamps */
+	tmp = intel_de_read(dev_priv, HSW_AUD_CFG(cpu_transcoder));
+	tmp &= ~AUD_CONFIG_N_VALUE_INDEX;
+	tmp |= AUD_CONFIG_N_PROG_ENABLE;
+	tmp &= ~AUD_CONFIG_UPPER_N_MASK;
+	tmp &= ~AUD_CONFIG_LOWER_N_MASK;
+	if (intel_crtc_has_dp_encoder(old_crtc_state))
+		tmp |= AUD_CONFIG_N_VALUE_INDEX;
+	intel_de_write(dev_priv, HSW_AUD_CFG(cpu_transcoder), tmp);
+
+	/* Invalidate ELD */
+	tmp = intel_de_read(dev_priv, HSW_AUD_PIN_ELD_CP_VLD);
+	tmp &= ~AUDIO_ELD_VALID(cpu_transcoder);
+	tmp &= ~AUDIO_OUTPUT_ENABLE(cpu_transcoder);
+	intel_de_write(dev_priv, HSW_AUD_PIN_ELD_CP_VLD, tmp);
+
+	mutex_unlock(&dev_priv->display.audio.mutex);
+}
+
+static unsigned int calc_hblank_early_prog(struct intel_encoder *encoder,
+					   const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	unsigned int link_clks_available, link_clks_required;
+	unsigned int tu_data, tu_line, link_clks_active;
+	unsigned int h_active, h_total, hblank_delta, pixel_clk;
+	unsigned int fec_coeff, cdclk, vdsc_bpp;
+	unsigned int link_clk, lanes;
+	unsigned int hblank_rise;
+
+	h_active = crtc_state->hw.adjusted_mode.crtc_hdisplay;
+	h_total = crtc_state->hw.adjusted_mode.crtc_htotal;
+	pixel_clk = crtc_state->hw.adjusted_mode.crtc_clock;
+	vdsc_bpp = crtc_state->dsc.compressed_bpp;
+	cdclk = i915->display.cdclk.hw.cdclk;
+	/* fec= 0.972261, using rounding multiplier of 1000000 */
+	fec_coeff = 972261;
+	link_clk = crtc_state->port_clock;
+	lanes = crtc_state->lane_count;
+
+	drm_dbg_kms(&i915->drm, "h_active = %u link_clk = %u :"
+		    "lanes = %u vdsc_bpp = %u cdclk = %u\n",
+		    h_active, link_clk, lanes, vdsc_bpp, cdclk);
+
+	if (WARN_ON(!link_clk || !pixel_clk || !lanes || !vdsc_bpp || !cdclk))
+		return 0;
+
+	link_clks_available = (h_total - h_active) * link_clk / pixel_clk - 28;
+	link_clks_required = DIV_ROUND_UP(192000 * h_total, 1000 * pixel_clk) * (48 / lanes + 2);
+
+	if (link_clks_available > link_clks_required)
+		hblank_delta = 32;
+	else
+		hblank_delta = DIV64_U64_ROUND_UP(mul_u32_u32(5 * (link_clk + cdclk), pixel_clk),
+						  mul_u32_u32(link_clk, cdclk));
+
+	tu_data = div64_u64(mul_u32_u32(pixel_clk * vdsc_bpp * 8, 1000000),
+			    mul_u32_u32(link_clk * lanes, fec_coeff));
+	tu_line = div64_u64(h_active * mul_u32_u32(link_clk, fec_coeff),
+			    mul_u32_u32(64 * pixel_clk, 1000000));
+	link_clks_active  = (tu_line - 1) * 64 + tu_data;
+
+	hblank_rise = (link_clks_active + 6 * DIV_ROUND_UP(link_clks_active, 250) + 4) * pixel_clk / link_clk;
+
+	return h_active - hblank_rise + hblank_delta;
+}
+
+static unsigned int calc_samples_room(const struct intel_crtc_state *crtc_state)
+{
+	unsigned int h_active, h_total, pixel_clk;
+	unsigned int link_clk, lanes;
+
+	h_active = crtc_state->hw.adjusted_mode.hdisplay;
+	h_total = crtc_state->hw.adjusted_mode.htotal;
+	pixel_clk = crtc_state->hw.adjusted_mode.clock;
+	link_clk = crtc_state->port_clock;
+	lanes = crtc_state->lane_count;
+
+	return ((h_total - h_active) * link_clk - 12 * pixel_clk) /
+		(pixel_clk * (48 / lanes + 2));
+}
+
+static void enable_audio_dsc_wa(struct intel_encoder *encoder,
+				const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	enum pipe pipe = crtc->pipe;
+	unsigned int hblank_early_prog, samples_room;
+	unsigned int val;
+
+	if (DISPLAY_VER(i915) < 11)
+		return;
+
+	val = intel_de_read(i915, AUD_CONFIG_BE);
+
+	if (DISPLAY_VER(i915) == 11)
+		val |= HBLANK_EARLY_ENABLE_ICL(pipe);
+	else if (DISPLAY_VER(i915) >= 12)
+		val |= HBLANK_EARLY_ENABLE_TGL(pipe);
+
+	if (crtc_state->dsc.compression_enable &&
+	    crtc_state->hw.adjusted_mode.hdisplay >= 3840 &&
+	    crtc_state->hw.adjusted_mode.vdisplay >= 2160) {
+		/* Get hblank early enable value required */
+		val &= ~HBLANK_START_COUNT_MASK(pipe);
+		hblank_early_prog = calc_hblank_early_prog(encoder, crtc_state);
+		if (hblank_early_prog < 32)
+			val |= HBLANK_START_COUNT(pipe, HBLANK_START_COUNT_32);
+		else if (hblank_early_prog < 64)
+			val |= HBLANK_START_COUNT(pipe, HBLANK_START_COUNT_64);
+		else if (hblank_early_prog < 96)
+			val |= HBLANK_START_COUNT(pipe, HBLANK_START_COUNT_96);
+		else
+			val |= HBLANK_START_COUNT(pipe, HBLANK_START_COUNT_128);
+
+		/* Get samples room value required */
+		val &= ~NUMBER_SAMPLES_PER_LINE_MASK(pipe);
+		samples_room = calc_samples_room(crtc_state);
+		if (samples_room < 3)
+			val |= NUMBER_SAMPLES_PER_LINE(pipe, samples_room);
+		else /* Program 0 i.e "All Samples available in buffer" */
+			val |= NUMBER_SAMPLES_PER_LINE(pipe, 0x0);
+	}
+
+	intel_de_write(i915, AUD_CONFIG_BE, val);
+}
+
+#undef ROUNDING_FACTOR
+
+static void hsw_audio_codec_enable(struct intel_encoder *encoder,
+				   const struct intel_crtc_state *crtc_state,
+				   const struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct drm_connector *connector = conn_state->connector;
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+	const u8 *eld = connector->eld;
+	u32 tmp;
+	int len, i;
+
+	mutex_lock(&dev_priv->display.audio.mutex);
+
+	/* Enable Audio WA for 4k DSC usecases */
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP))
+		enable_audio_dsc_wa(encoder, crtc_state);
+
+	/* Enable audio presence detect, invalidate ELD */
+	tmp = intel_de_read(dev_priv, HSW_AUD_PIN_ELD_CP_VLD);
+	tmp |= AUDIO_OUTPUT_ENABLE(cpu_transcoder);
+	tmp &= ~AUDIO_ELD_VALID(cpu_transcoder);
+	intel_de_write(dev_priv, HSW_AUD_PIN_ELD_CP_VLD, tmp);
+
+	/*
+	 * FIXME: We're supposed to wait for vblank here, but we have vblanks
+	 * disabled during the mode set. The proper fix would be to push the
+	 * rest of the setup into a vblank work item, queued here, but the
+	 * infrastructure is not there yet.
+	 */
+
+	/* Reset ELD write address */
+	tmp = intel_de_read(dev_priv, HSW_AUD_DIP_ELD_CTRL(cpu_transcoder));
+	tmp &= ~IBX_ELD_ADDRESS_MASK;
+	intel_de_write(dev_priv, HSW_AUD_DIP_ELD_CTRL(cpu_transcoder), tmp);
+
+	/* Up to 84 bytes of hw ELD buffer */
+	len = min(drm_eld_size(eld), 84);
+	for (i = 0; i < len / 4; i++)
+		intel_de_write(dev_priv, HSW_AUD_EDID_DATA(cpu_transcoder),
+			       *((const u32 *)eld + i));
+
+	/* ELD valid */
+	tmp = intel_de_read(dev_priv, HSW_AUD_PIN_ELD_CP_VLD);
+	tmp |= AUDIO_ELD_VALID(cpu_transcoder);
+	intel_de_write(dev_priv, HSW_AUD_PIN_ELD_CP_VLD, tmp);
+
+	/* Enable timestamps */
+	hsw_audio_config_update(encoder, crtc_state);
+
+	mutex_unlock(&dev_priv->display.audio.mutex);
+}
+
+static void ilk_audio_codec_disable(struct intel_encoder *encoder,
+				    const struct intel_crtc_state *old_crtc_state,
+				    const struct drm_connector_state *old_conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
+	enum pipe pipe = crtc->pipe;
+	enum port port = encoder->port;
+	u32 tmp, eldv;
+	i915_reg_t aud_config, aud_cntrl_st2;
+
+	if (drm_WARN_ON(&dev_priv->drm, port == PORT_A))
+		return;
+
+	if (HAS_PCH_IBX(dev_priv)) {
+		aud_config = IBX_AUD_CFG(pipe);
+		aud_cntrl_st2 = IBX_AUD_CNTL_ST2;
+	} else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+		aud_config = VLV_AUD_CFG(pipe);
+		aud_cntrl_st2 = VLV_AUD_CNTL_ST2;
+	} else {
+		aud_config = CPT_AUD_CFG(pipe);
+		aud_cntrl_st2 = CPT_AUD_CNTRL_ST2;
+	}
+
+	/* Disable timestamps */
+	tmp = intel_de_read(dev_priv, aud_config);
+	tmp &= ~AUD_CONFIG_N_VALUE_INDEX;
+	tmp |= AUD_CONFIG_N_PROG_ENABLE;
+	tmp &= ~AUD_CONFIG_UPPER_N_MASK;
+	tmp &= ~AUD_CONFIG_LOWER_N_MASK;
+	if (intel_crtc_has_dp_encoder(old_crtc_state))
+		tmp |= AUD_CONFIG_N_VALUE_INDEX;
+	intel_de_write(dev_priv, aud_config, tmp);
+
+	eldv = IBX_ELD_VALID(port);
+
+	/* Invalidate ELD */
+	tmp = intel_de_read(dev_priv, aud_cntrl_st2);
+	tmp &= ~eldv;
+	intel_de_write(dev_priv, aud_cntrl_st2, tmp);
+}
+
+static void ilk_audio_codec_enable(struct intel_encoder *encoder,
+				   const struct intel_crtc_state *crtc_state,
+				   const struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_connector *connector = conn_state->connector;
+	enum pipe pipe = crtc->pipe;
+	enum port port = encoder->port;
+	const u8 *eld = connector->eld;
+	u32 tmp, eldv;
+	int len, i;
+	i915_reg_t hdmiw_hdmiedid, aud_config, aud_cntl_st, aud_cntrl_st2;
+
+	if (drm_WARN_ON(&dev_priv->drm, port == PORT_A))
+		return;
+
+	/*
+	 * FIXME: We're supposed to wait for vblank here, but we have vblanks
+	 * disabled during the mode set. The proper fix would be to push the
+	 * rest of the setup into a vblank work item, queued here, but the
+	 * infrastructure is not there yet.
+	 */
+
+	if (HAS_PCH_IBX(dev_priv)) {
+		hdmiw_hdmiedid = IBX_HDMIW_HDMIEDID(pipe);
+		aud_config = IBX_AUD_CFG(pipe);
+		aud_cntl_st = IBX_AUD_CNTL_ST(pipe);
+		aud_cntrl_st2 = IBX_AUD_CNTL_ST2;
+	} else if (IS_VALLEYVIEW(dev_priv) ||
+		   IS_CHERRYVIEW(dev_priv)) {
+		hdmiw_hdmiedid = VLV_HDMIW_HDMIEDID(pipe);
+		aud_config = VLV_AUD_CFG(pipe);
+		aud_cntl_st = VLV_AUD_CNTL_ST(pipe);
+		aud_cntrl_st2 = VLV_AUD_CNTL_ST2;
+	} else {
+		hdmiw_hdmiedid = CPT_HDMIW_HDMIEDID(pipe);
+		aud_config = CPT_AUD_CFG(pipe);
+		aud_cntl_st = CPT_AUD_CNTL_ST(pipe);
+		aud_cntrl_st2 = CPT_AUD_CNTRL_ST2;
+	}
+
+	eldv = IBX_ELD_VALID(port);
+
+	/* Invalidate ELD */
+	tmp = intel_de_read(dev_priv, aud_cntrl_st2);
+	tmp &= ~eldv;
+	intel_de_write(dev_priv, aud_cntrl_st2, tmp);
+
+	/* Reset ELD write address */
+	tmp = intel_de_read(dev_priv, aud_cntl_st);
+	tmp &= ~IBX_ELD_ADDRESS_MASK;
+	intel_de_write(dev_priv, aud_cntl_st, tmp);
+
+	/* Up to 84 bytes of hw ELD buffer */
+	len = min(drm_eld_size(eld), 84);
+	for (i = 0; i < len / 4; i++)
+		intel_de_write(dev_priv, hdmiw_hdmiedid,
+			       *((const u32 *)eld + i));
+
+	/* ELD valid */
+	tmp = intel_de_read(dev_priv, aud_cntrl_st2);
+	tmp |= eldv;
+	intel_de_write(dev_priv, aud_cntrl_st2, tmp);
+
+	/* Enable timestamps */
+	tmp = intel_de_read(dev_priv, aud_config);
+	tmp &= ~AUD_CONFIG_N_VALUE_INDEX;
+	tmp &= ~AUD_CONFIG_N_PROG_ENABLE;
+	tmp &= ~AUD_CONFIG_PIXEL_CLOCK_HDMI_MASK;
+	if (intel_crtc_has_dp_encoder(crtc_state))
+		tmp |= AUD_CONFIG_N_VALUE_INDEX;
+	else
+		tmp |= audio_config_hdmi_pixel_clock(crtc_state);
+	intel_de_write(dev_priv, aud_config, tmp);
+}
+
+/**
+ * intel_audio_codec_enable - Enable the audio codec for HD audio
+ * @encoder: encoder on which to enable audio
+ * @crtc_state: pointer to the current crtc state.
+ * @conn_state: pointer to the current connector state.
+ *
+ * The enable sequences may only be performed after enabling the transcoder and
+ * port, and after completed link training.
+ */
+void intel_audio_codec_enable(struct intel_encoder *encoder,
+			      const struct intel_crtc_state *crtc_state,
+			      const struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct i915_audio_component *acomp = dev_priv->display.audio.component;
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_connector *connector = conn_state->connector;
+	const struct drm_display_mode *adjusted_mode =
+		&crtc_state->hw.adjusted_mode;
+	enum port port = encoder->port;
+	enum pipe pipe = crtc->pipe;
+
+	if (!crtc_state->has_audio)
+		return;
+
+	drm_dbg_kms(&dev_priv->drm, "[CONNECTOR:%d:%s][ENCODER:%d:%s] Enable audio codec on pipe %c, %u bytes ELD\n",
+		    connector->base.id, connector->name,
+		    encoder->base.base.id, encoder->base.name,
+		    pipe_name(pipe), drm_eld_size(connector->eld));
+
+	/* FIXME precompute the ELD in .compute_config() */
+	if (!connector->eld[0])
+		drm_dbg_kms(&dev_priv->drm,
+			    "Bogus ELD on [CONNECTOR:%d:%s]\n",
+			    connector->base.id, connector->name);
+
+	connector->eld[6] = drm_av_sync_delay(connector, adjusted_mode) / 2;
+
+	if (dev_priv->display.funcs.audio)
+		dev_priv->display.funcs.audio->audio_codec_enable(encoder,
+								  crtc_state,
+								  conn_state);
+
+	mutex_lock(&dev_priv->display.audio.mutex);
+	encoder->audio_connector = connector;
+
+	/* referred in audio callbacks */
+	dev_priv->display.audio.encoder_map[pipe] = encoder;
+	mutex_unlock(&dev_priv->display.audio.mutex);
+
+	if (acomp && acomp->base.audio_ops &&
+	    acomp->base.audio_ops->pin_eld_notify) {
+		/* audio drivers expect pipe = -1 to indicate Non-MST cases */
+		if (!intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST))
+			pipe = -1;
+		acomp->base.audio_ops->pin_eld_notify(acomp->base.audio_ops->audio_ptr,
+						 (int) port, (int) pipe);
+	}
+
+	intel_lpe_audio_notify(dev_priv, pipe, port, connector->eld,
+			       crtc_state->port_clock,
+			       intel_crtc_has_dp_encoder(crtc_state));
+}
+
+/**
+ * intel_audio_codec_disable - Disable the audio codec for HD audio
+ * @encoder: encoder on which to disable audio
+ * @old_crtc_state: pointer to the old crtc state.
+ * @old_conn_state: pointer to the old connector state.
+ *
+ * The disable sequences must be performed before disabling the transcoder or
+ * port.
+ */
+void intel_audio_codec_disable(struct intel_encoder *encoder,
+			       const struct intel_crtc_state *old_crtc_state,
+			       const struct drm_connector_state *old_conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct i915_audio_component *acomp = dev_priv->display.audio.component;
+	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
+	struct drm_connector *connector = old_conn_state->connector;
+	enum port port = encoder->port;
+	enum pipe pipe = crtc->pipe;
+
+	if (!old_crtc_state->has_audio)
+		return;
+
+	drm_dbg_kms(&dev_priv->drm, "[CONNECTOR:%d:%s][ENCODER:%d:%s] Disable audio codec on pipe %c\n",
+		    connector->base.id, connector->name,
+		    encoder->base.base.id, encoder->base.name, pipe_name(pipe));
+
+	if (dev_priv->display.funcs.audio)
+		dev_priv->display.funcs.audio->audio_codec_disable(encoder,
+								   old_crtc_state,
+								   old_conn_state);
+
+	mutex_lock(&dev_priv->display.audio.mutex);
+	encoder->audio_connector = NULL;
+	dev_priv->display.audio.encoder_map[pipe] = NULL;
+	mutex_unlock(&dev_priv->display.audio.mutex);
+
+	if (acomp && acomp->base.audio_ops &&
+	    acomp->base.audio_ops->pin_eld_notify) {
+		/* audio drivers expect pipe = -1 to indicate Non-MST cases */
+		if (!intel_crtc_has_type(old_crtc_state, INTEL_OUTPUT_DP_MST))
+			pipe = -1;
+		acomp->base.audio_ops->pin_eld_notify(acomp->base.audio_ops->audio_ptr,
+						 (int) port, (int) pipe);
+	}
+
+	intel_lpe_audio_notify(dev_priv, pipe, port, NULL, 0, false);
+}
+
+static const struct intel_audio_funcs g4x_audio_funcs = {
+	.audio_codec_enable = g4x_audio_codec_enable,
+	.audio_codec_disable = g4x_audio_codec_disable,
+};
+
+static const struct intel_audio_funcs ilk_audio_funcs = {
+	.audio_codec_enable = ilk_audio_codec_enable,
+	.audio_codec_disable = ilk_audio_codec_disable,
+};
+
+static const struct intel_audio_funcs hsw_audio_funcs = {
+	.audio_codec_enable = hsw_audio_codec_enable,
+	.audio_codec_disable = hsw_audio_codec_disable,
+};
+
+/**
+ * intel_audio_hooks_init - Set up chip specific audio hooks
+ * @dev_priv: device private
+ */
+void intel_audio_hooks_init(struct drm_i915_private *dev_priv)
+{
+	if (IS_G4X(dev_priv)) {
+		dev_priv->display.funcs.audio = &g4x_audio_funcs;
+	} else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+		dev_priv->display.funcs.audio = &ilk_audio_funcs;
+	} else if (IS_HASWELL(dev_priv) || DISPLAY_VER(dev_priv) >= 8) {
+		dev_priv->display.funcs.audio = &hsw_audio_funcs;
+	} else if (HAS_PCH_SPLIT(dev_priv)) {
+		dev_priv->display.funcs.audio = &ilk_audio_funcs;
+	}
+}
+
+struct aud_ts_cdclk_m_n {
+	u8 m;
+	u16 n;
+};
+
+void intel_audio_cdclk_change_pre(struct drm_i915_private *i915)
+{
+	if (DISPLAY_VER(i915) >= 13)
+		intel_de_rmw(i915, AUD_TS_CDCLK_M, AUD_TS_CDCLK_M_EN, 0);
+}
+
+static void get_aud_ts_cdclk_m_n(int refclk, int cdclk, struct aud_ts_cdclk_m_n *aud_ts)
+{
+	if (refclk == 24000)
+		aud_ts->m = 12;
+	else
+		aud_ts->m = 15;
+
+	aud_ts->n = cdclk * aud_ts->m / 24000;
+}
+
+void intel_audio_cdclk_change_post(struct drm_i915_private *i915)
+{
+	struct aud_ts_cdclk_m_n aud_ts;
+
+	if (DISPLAY_VER(i915) >= 13) {
+		get_aud_ts_cdclk_m_n(i915->display.cdclk.hw.ref, i915->display.cdclk.hw.cdclk, &aud_ts);
+
+		intel_de_write(i915, AUD_TS_CDCLK_N, aud_ts.n);
+		intel_de_write(i915, AUD_TS_CDCLK_M, aud_ts.m | AUD_TS_CDCLK_M_EN);
+		drm_dbg_kms(&i915->drm, "aud_ts_cdclk set to M=%u, N=%u\n", aud_ts.m, aud_ts.n);
+	}
+}
+
+static int glk_force_audio_cdclk_commit(struct intel_atomic_state *state,
+					struct intel_crtc *crtc,
+					bool enable)
+{
+	struct intel_cdclk_state *cdclk_state;
+	int ret;
+
+	/* need to hold at least one crtc lock for the global state */
+	ret = drm_modeset_lock(&crtc->base.mutex, state->base.acquire_ctx);
+	if (ret)
+		return ret;
+
+	cdclk_state = intel_atomic_get_cdclk_state(state);
+	if (IS_ERR(cdclk_state))
+		return PTR_ERR(cdclk_state);
+
+	cdclk_state->force_min_cdclk = enable ? 2 * 96000 : 0;
+
+	return drm_atomic_commit(&state->base);
+}
+
+static void glk_force_audio_cdclk(struct drm_i915_private *dev_priv,
+				  bool enable)
+{
+	struct drm_modeset_acquire_ctx ctx;
+	struct drm_atomic_state *state;
+	struct intel_crtc *crtc;
+	int ret;
+
+	crtc = intel_first_crtc(dev_priv);
+	if (!crtc)
+		return;
+
+	drm_modeset_acquire_init(&ctx, 0);
+	state = drm_atomic_state_alloc(&dev_priv->drm);
+	if (drm_WARN_ON(&dev_priv->drm, !state))
+		return;
+
+	state->acquire_ctx = &ctx;
+
+retry:
+	ret = glk_force_audio_cdclk_commit(to_intel_atomic_state(state), crtc,
+					   enable);
+	if (ret == -EDEADLK) {
+		drm_atomic_state_clear(state);
+		drm_modeset_backoff(&ctx);
+		goto retry;
+	}
+
+	drm_WARN_ON(&dev_priv->drm, ret);
+
+	drm_atomic_state_put(state);
+
+	drm_modeset_drop_locks(&ctx);
+	drm_modeset_acquire_fini(&ctx);
+}
+
+static unsigned long i915_audio_component_get_power(struct device *kdev)
+{
+	struct drm_i915_private *dev_priv = kdev_to_i915(kdev);
+	intel_wakeref_t ret;
+
+	/* Catch potential impedance mismatches before they occur! */
+	BUILD_BUG_ON(sizeof(intel_wakeref_t) > sizeof(unsigned long));
+
+	ret = intel_display_power_get(dev_priv, POWER_DOMAIN_AUDIO_PLAYBACK);
+
+	if (dev_priv->display.audio.power_refcount++ == 0) {
+		if (DISPLAY_VER(dev_priv) >= 9) {
+			intel_de_write(dev_priv, AUD_FREQ_CNTRL,
+				       dev_priv->display.audio.freq_cntrl);
+			drm_dbg_kms(&dev_priv->drm,
+				    "restored AUD_FREQ_CNTRL to 0x%x\n",
+				    dev_priv->display.audio.freq_cntrl);
+		}
+
+		/* Force CDCLK to 2*BCLK as long as we need audio powered. */
+		if (IS_GEMINILAKE(dev_priv))
+			glk_force_audio_cdclk(dev_priv, true);
+
+		if (DISPLAY_VER(dev_priv) >= 10)
+			intel_de_write(dev_priv, AUD_PIN_BUF_CTL,
+				       (intel_de_read(dev_priv, AUD_PIN_BUF_CTL) | AUD_PIN_BUF_ENABLE));
+	}
+
+	return ret;
+}
+
+static void i915_audio_component_put_power(struct device *kdev,
+					   unsigned long cookie)
+{
+	struct drm_i915_private *dev_priv = kdev_to_i915(kdev);
+
+	/* Stop forcing CDCLK to 2*BCLK if no need for audio to be powered. */
+	if (--dev_priv->display.audio.power_refcount == 0)
+		if (IS_GEMINILAKE(dev_priv))
+			glk_force_audio_cdclk(dev_priv, false);
+
+	intel_display_power_put(dev_priv, POWER_DOMAIN_AUDIO_PLAYBACK, cookie);
+}
+
+static void i915_audio_component_codec_wake_override(struct device *kdev,
+						     bool enable)
+{
+	struct drm_i915_private *dev_priv = kdev_to_i915(kdev);
+	unsigned long cookie;
+	u32 tmp;
+
+	if (DISPLAY_VER(dev_priv) < 9)
+		return;
+
+	cookie = i915_audio_component_get_power(kdev);
+
+	/*
+	 * Enable/disable generating the codec wake signal, overriding the
+	 * internal logic to generate the codec wake to controller.
+	 */
+	tmp = intel_de_read(dev_priv, HSW_AUD_CHICKENBIT);
+	tmp &= ~SKL_AUD_CODEC_WAKE_SIGNAL;
+	intel_de_write(dev_priv, HSW_AUD_CHICKENBIT, tmp);
+	usleep_range(1000, 1500);
+
+	if (enable) {
+		tmp = intel_de_read(dev_priv, HSW_AUD_CHICKENBIT);
+		tmp |= SKL_AUD_CODEC_WAKE_SIGNAL;
+		intel_de_write(dev_priv, HSW_AUD_CHICKENBIT, tmp);
+		usleep_range(1000, 1500);
+	}
+
+	i915_audio_component_put_power(kdev, cookie);
+}
+
+/* Get CDCLK in kHz  */
+static int i915_audio_component_get_cdclk_freq(struct device *kdev)
+{
+	struct drm_i915_private *dev_priv = kdev_to_i915(kdev);
+
+	if (drm_WARN_ON_ONCE(&dev_priv->drm, !HAS_DDI(dev_priv)))
+		return -ENODEV;
+
+	return dev_priv->display.cdclk.hw.cdclk;
+}
+
+/*
+ * get the intel_encoder according to the parameter port and pipe
+ * intel_encoder is saved by the index of pipe
+ * MST & (pipe >= 0): return the audio.encoder_map[pipe],
+ *   when port is matched
+ * MST & (pipe < 0): this is invalid
+ * Non-MST & (pipe >= 0): only pipe = 0 (the first device entry)
+ *   will get the right intel_encoder with port matched
+ * Non-MST & (pipe < 0): get the right intel_encoder with port matched
+ */
+static struct intel_encoder *get_saved_enc(struct drm_i915_private *dev_priv,
+					       int port, int pipe)
+{
+	struct intel_encoder *encoder;
+
+	/* MST */
+	if (pipe >= 0) {
+		if (drm_WARN_ON(&dev_priv->drm,
+				pipe >= ARRAY_SIZE(dev_priv->display.audio.encoder_map)))
+			return NULL;
+
+		encoder = dev_priv->display.audio.encoder_map[pipe];
+		/*
+		 * when bootup, audio driver may not know it is
+		 * MST or not. So it will poll all the port & pipe
+		 * combinations
+		 */
+		if (encoder != NULL && encoder->port == port &&
+		    encoder->type == INTEL_OUTPUT_DP_MST)
+			return encoder;
+	}
+
+	/* Non-MST */
+	if (pipe > 0)
+		return NULL;
+
+	for_each_pipe(dev_priv, pipe) {
+		encoder = dev_priv->display.audio.encoder_map[pipe];
+		if (encoder == NULL)
+			continue;
+
+		if (encoder->type == INTEL_OUTPUT_DP_MST)
+			continue;
+
+		if (port == encoder->port)
+			return encoder;
+	}
+
+	return NULL;
+}
+
+static int i915_audio_component_sync_audio_rate(struct device *kdev, int port,
+						int pipe, int rate)
+{
+	struct drm_i915_private *dev_priv = kdev_to_i915(kdev);
+	struct i915_audio_component *acomp = dev_priv->display.audio.component;
+	struct intel_encoder *encoder;
+	struct intel_crtc *crtc;
+	unsigned long cookie;
+	int err = 0;
+
+	if (!HAS_DDI(dev_priv))
+		return 0;
+
+	cookie = i915_audio_component_get_power(kdev);
+	mutex_lock(&dev_priv->display.audio.mutex);
+
+	/* 1. get the pipe */
+	encoder = get_saved_enc(dev_priv, port, pipe);
+	if (!encoder || !encoder->base.crtc) {
+		drm_dbg_kms(&dev_priv->drm, "Not valid for port %c\n",
+			    port_name(port));
+		err = -ENODEV;
+		goto unlock;
+	}
+
+	crtc = to_intel_crtc(encoder->base.crtc);
+
+	/* port must be valid now, otherwise the pipe will be invalid */
+	acomp->aud_sample_rate[port] = rate;
+
+	hsw_audio_config_update(encoder, crtc->config);
+
+ unlock:
+	mutex_unlock(&dev_priv->display.audio.mutex);
+	i915_audio_component_put_power(kdev, cookie);
+	return err;
+}
+
+static int i915_audio_component_get_eld(struct device *kdev, int port,
+					int pipe, bool *enabled,
+					unsigned char *buf, int max_bytes)
+{
+	struct drm_i915_private *dev_priv = kdev_to_i915(kdev);
+	struct intel_encoder *intel_encoder;
+	const u8 *eld;
+	int ret = -EINVAL;
+
+	mutex_lock(&dev_priv->display.audio.mutex);
+
+	intel_encoder = get_saved_enc(dev_priv, port, pipe);
+	if (!intel_encoder) {
+		drm_dbg_kms(&dev_priv->drm, "Not valid for port %c\n",
+			    port_name(port));
+		mutex_unlock(&dev_priv->display.audio.mutex);
+		return ret;
+	}
+
+	ret = 0;
+	*enabled = intel_encoder->audio_connector != NULL;
+	if (*enabled) {
+		eld = intel_encoder->audio_connector->eld;
+		ret = drm_eld_size(eld);
+		memcpy(buf, eld, min(max_bytes, ret));
+	}
+
+	mutex_unlock(&dev_priv->display.audio.mutex);
+	return ret;
+}
+
+static const struct drm_audio_component_ops i915_audio_component_ops = {
+	.owner		= THIS_MODULE,
+	.get_power	= i915_audio_component_get_power,
+	.put_power	= i915_audio_component_put_power,
+	.codec_wake_override = i915_audio_component_codec_wake_override,
+	.get_cdclk_freq	= i915_audio_component_get_cdclk_freq,
+	.sync_audio_rate = i915_audio_component_sync_audio_rate,
+	.get_eld	= i915_audio_component_get_eld,
+};
+
+static int i915_audio_component_bind(struct device *i915_kdev,
+				     struct device *hda_kdev, void *data)
+{
+	struct i915_audio_component *acomp = data;
+	struct drm_i915_private *dev_priv = kdev_to_i915(i915_kdev);
+	int i;
+
+	if (drm_WARN_ON(&dev_priv->drm, acomp->base.ops || acomp->base.dev))
+		return -EEXIST;
+
+	if (drm_WARN_ON(&dev_priv->drm,
+			!device_link_add(hda_kdev, i915_kdev,
+					 DL_FLAG_STATELESS)))
+		return -ENOMEM;
+
+	drm_modeset_lock_all(&dev_priv->drm);
+	acomp->base.ops = &i915_audio_component_ops;
+	acomp->base.dev = i915_kdev;
+	BUILD_BUG_ON(MAX_PORTS != I915_MAX_PORTS);
+	for (i = 0; i < ARRAY_SIZE(acomp->aud_sample_rate); i++)
+		acomp->aud_sample_rate[i] = 0;
+	dev_priv->display.audio.component = acomp;
+	drm_modeset_unlock_all(&dev_priv->drm);
+
+	return 0;
+}
+
+static void i915_audio_component_unbind(struct device *i915_kdev,
+					struct device *hda_kdev, void *data)
+{
+	struct i915_audio_component *acomp = data;
+	struct drm_i915_private *dev_priv = kdev_to_i915(i915_kdev);
+
+	drm_modeset_lock_all(&dev_priv->drm);
+	acomp->base.ops = NULL;
+	acomp->base.dev = NULL;
+	dev_priv->display.audio.component = NULL;
+	drm_modeset_unlock_all(&dev_priv->drm);
+
+	device_link_remove(hda_kdev, i915_kdev);
+
+	if (dev_priv->display.audio.power_refcount)
+		drm_err(&dev_priv->drm, "audio power refcount %d after unbind\n",
+			dev_priv->display.audio.power_refcount);
+}
+
+static const struct component_ops i915_audio_component_bind_ops = {
+	.bind	= i915_audio_component_bind,
+	.unbind	= i915_audio_component_unbind,
+};
+
+#define AUD_FREQ_TMODE_SHIFT	14
+#define AUD_FREQ_4T		0
+#define AUD_FREQ_8T		(2 << AUD_FREQ_TMODE_SHIFT)
+#define AUD_FREQ_PULLCLKS(x)	(((x) & 0x3) << 11)
+#define AUD_FREQ_BCLK_96M	BIT(4)
+
+#define AUD_FREQ_GEN12          (AUD_FREQ_8T | AUD_FREQ_PULLCLKS(0) | AUD_FREQ_BCLK_96M)
+#define AUD_FREQ_TGL_BROKEN     (AUD_FREQ_8T | AUD_FREQ_PULLCLKS(2) | AUD_FREQ_BCLK_96M)
+
+/**
+ * i915_audio_component_init - initialize and register the audio component
+ * @dev_priv: i915 device instance
+ *
+ * This will register with the component framework a child component which
+ * will bind dynamically to the snd_hda_intel driver's corresponding master
+ * component when the latter is registered. During binding the child
+ * initializes an instance of struct i915_audio_component which it receives
+ * from the master. The master can then start to use the interface defined by
+ * this struct. Each side can break the binding at any point by deregistering
+ * its own component after which each side's component unbind callback is
+ * called.
+ *
+ * We ignore any error during registration and continue with reduced
+ * functionality (i.e. without HDMI audio).
+ */
+static void i915_audio_component_init(struct drm_i915_private *dev_priv)
+{
+	u32 aud_freq, aud_freq_init;
+	int ret;
+
+	ret = component_add_typed(dev_priv->drm.dev,
+				  &i915_audio_component_bind_ops,
+				  I915_COMPONENT_AUDIO);
+	if (ret < 0) {
+		drm_err(&dev_priv->drm,
+			"failed to add audio component (%d)\n", ret);
+		/* continue with reduced functionality */
+		return;
+	}
+
+	if (DISPLAY_VER(dev_priv) >= 9) {
+		aud_freq_init = intel_de_read(dev_priv, AUD_FREQ_CNTRL);
+
+		if (DISPLAY_VER(dev_priv) >= 12)
+			aud_freq = AUD_FREQ_GEN12;
+		else
+			aud_freq = aud_freq_init;
+
+		/* use BIOS provided value for TGL and RKL unless it is a known bad value */
+		if ((IS_TIGERLAKE(dev_priv) || IS_ROCKETLAKE(dev_priv)) &&
+		    aud_freq_init != AUD_FREQ_TGL_BROKEN)
+			aud_freq = aud_freq_init;
+
+		drm_dbg_kms(&dev_priv->drm, "use AUD_FREQ_CNTRL of 0x%x (init value 0x%x)\n",
+			    aud_freq, aud_freq_init);
+
+		dev_priv->display.audio.freq_cntrl = aud_freq;
+	}
+
+	/* init with current cdclk */
+	intel_audio_cdclk_change_post(dev_priv);
+
+	dev_priv->display.audio.component_registered = true;
+}
+
+/**
+ * i915_audio_component_cleanup - deregister the audio component
+ * @dev_priv: i915 device instance
+ *
+ * Deregisters the audio component, breaking any existing binding to the
+ * corresponding snd_hda_intel driver's master component.
+ */
+static void i915_audio_component_cleanup(struct drm_i915_private *dev_priv)
+{
+	if (!dev_priv->display.audio.component_registered)
+		return;
+
+	component_del(dev_priv->drm.dev, &i915_audio_component_bind_ops);
+	dev_priv->display.audio.component_registered = false;
+}
+
+/**
+ * intel_audio_init() - Initialize the audio driver either using
+ * component framework or using lpe audio bridge
+ * @dev_priv: the i915 drm device private data
+ *
+ */
+void intel_audio_init(struct drm_i915_private *dev_priv)
+{
+	if (intel_lpe_audio_init(dev_priv) < 0)
+		i915_audio_component_init(dev_priv);
+}
+
+/**
+ * intel_audio_deinit() - deinitialize the audio driver
+ * @dev_priv: the i915 drm device private data
+ *
+ */
+void intel_audio_deinit(struct drm_i915_private *dev_priv)
+{
+	if (dev_priv->display.audio.lpe.platdev != NULL)
+		intel_lpe_audio_teardown(dev_priv);
+	else
+		i915_audio_component_cleanup(dev_priv);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_audio.h b/drivers/gpu/drm/i915/display/intel_audio.h
new file mode 100644
index 000000000..63b22131d
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_audio.h
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_AUDIO_H__
+#define __INTEL_AUDIO_H__
+
+struct drm_connector_state;
+struct drm_i915_private;
+struct intel_crtc_state;
+struct intel_encoder;
+
+void intel_audio_hooks_init(struct drm_i915_private *dev_priv);
+void intel_audio_codec_enable(struct intel_encoder *encoder,
+			      const struct intel_crtc_state *crtc_state,
+			      const struct drm_connector_state *conn_state);
+void intel_audio_codec_disable(struct intel_encoder *encoder,
+			       const struct intel_crtc_state *old_crtc_state,
+			       const struct drm_connector_state *old_conn_state);
+void intel_audio_cdclk_change_pre(struct drm_i915_private *dev_priv);
+void intel_audio_cdclk_change_post(struct drm_i915_private *dev_priv);
+void intel_audio_init(struct drm_i915_private *dev_priv);
+void intel_audio_deinit(struct drm_i915_private *dev_priv);
+
+#endif /* __INTEL_AUDIO_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_audio_regs.h b/drivers/gpu/drm/i915/display/intel_audio_regs.h
new file mode 100644
index 000000000..d1e5844e3
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_audio_regs.h
@@ -0,0 +1,160 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#ifndef __INTEL_AUDIO_REGS_H__
+#define __INTEL_AUDIO_REGS_H__
+
+#include "i915_reg_defs.h"
+
+#define G4X_AUD_VID_DID			_MMIO(DISPLAY_MMIO_BASE(dev_priv) + 0x62020)
+#define   INTEL_AUDIO_DEVCL		0x808629FB
+#define   INTEL_AUDIO_DEVBLC		0x80862801
+#define   INTEL_AUDIO_DEVCTG		0x80862802
+
+#define G4X_AUD_CNTL_ST			_MMIO(0x620B4)
+#define   G4X_ELDV_DEVCL_DEVBLC		(1 << 13)
+#define   G4X_ELDV_DEVCTG		(1 << 14)
+#define   G4X_ELD_ADDR_MASK		(0xf << 5)
+#define   G4X_ELD_ACK			(1 << 4)
+#define G4X_HDMIW_HDMIEDID		_MMIO(0x6210C)
+
+#define _IBX_HDMIW_HDMIEDID_A		0xE2050
+#define _IBX_HDMIW_HDMIEDID_B		0xE2150
+#define IBX_HDMIW_HDMIEDID(pipe)	_MMIO_PIPE(pipe, _IBX_HDMIW_HDMIEDID_A, \
+						  _IBX_HDMIW_HDMIEDID_B)
+#define _IBX_AUD_CNTL_ST_A		0xE20B4
+#define _IBX_AUD_CNTL_ST_B		0xE21B4
+#define IBX_AUD_CNTL_ST(pipe)		_MMIO_PIPE(pipe, _IBX_AUD_CNTL_ST_A, \
+						  _IBX_AUD_CNTL_ST_B)
+#define   IBX_ELD_BUFFER_SIZE_MASK	(0x1f << 10)
+#define   IBX_ELD_ADDRESS_MASK		(0x1f << 5)
+#define   IBX_ELD_ACK			(1 << 4)
+#define IBX_AUD_CNTL_ST2		_MMIO(0xE20C0)
+#define   IBX_CP_READY(port)		((1 << 1) << (((port) - 1) * 4))
+#define   IBX_ELD_VALID(port)		((1 << 0) << (((port) - 1) * 4))
+
+#define _CPT_HDMIW_HDMIEDID_A		0xE5050
+#define _CPT_HDMIW_HDMIEDID_B		0xE5150
+#define CPT_HDMIW_HDMIEDID(pipe)	_MMIO_PIPE(pipe, _CPT_HDMIW_HDMIEDID_A, _CPT_HDMIW_HDMIEDID_B)
+#define _CPT_AUD_CNTL_ST_A		0xE50B4
+#define _CPT_AUD_CNTL_ST_B		0xE51B4
+#define CPT_AUD_CNTL_ST(pipe)		_MMIO_PIPE(pipe, _CPT_AUD_CNTL_ST_A, _CPT_AUD_CNTL_ST_B)
+#define CPT_AUD_CNTRL_ST2		_MMIO(0xE50C0)
+
+#define _VLV_HDMIW_HDMIEDID_A		(VLV_DISPLAY_BASE + 0x62050)
+#define _VLV_HDMIW_HDMIEDID_B		(VLV_DISPLAY_BASE + 0x62150)
+#define VLV_HDMIW_HDMIEDID(pipe)	_MMIO_PIPE(pipe, _VLV_HDMIW_HDMIEDID_A, _VLV_HDMIW_HDMIEDID_B)
+#define _VLV_AUD_CNTL_ST_A		(VLV_DISPLAY_BASE + 0x620B4)
+#define _VLV_AUD_CNTL_ST_B		(VLV_DISPLAY_BASE + 0x621B4)
+#define VLV_AUD_CNTL_ST(pipe)		_MMIO_PIPE(pipe, _VLV_AUD_CNTL_ST_A, _VLV_AUD_CNTL_ST_B)
+#define VLV_AUD_CNTL_ST2		_MMIO(VLV_DISPLAY_BASE + 0x620C0)
+
+#define _IBX_AUD_CONFIG_A		0xe2000
+#define _IBX_AUD_CONFIG_B		0xe2100
+#define IBX_AUD_CFG(pipe)		_MMIO_PIPE(pipe, _IBX_AUD_CONFIG_A, _IBX_AUD_CONFIG_B)
+#define _CPT_AUD_CONFIG_A		0xe5000
+#define _CPT_AUD_CONFIG_B		0xe5100
+#define CPT_AUD_CFG(pipe)		_MMIO_PIPE(pipe, _CPT_AUD_CONFIG_A, _CPT_AUD_CONFIG_B)
+#define _VLV_AUD_CONFIG_A		(VLV_DISPLAY_BASE + 0x62000)
+#define _VLV_AUD_CONFIG_B		(VLV_DISPLAY_BASE + 0x62100)
+#define VLV_AUD_CFG(pipe)		_MMIO_PIPE(pipe, _VLV_AUD_CONFIG_A, _VLV_AUD_CONFIG_B)
+
+#define   AUD_CONFIG_N_VALUE_INDEX		(1 << 29)
+#define   AUD_CONFIG_N_PROG_ENABLE		(1 << 28)
+#define   AUD_CONFIG_UPPER_N_SHIFT		20
+#define   AUD_CONFIG_UPPER_N_MASK		(0xff << 20)
+#define   AUD_CONFIG_LOWER_N_SHIFT		4
+#define   AUD_CONFIG_LOWER_N_MASK		(0xfff << 4)
+#define   AUD_CONFIG_N_MASK			(AUD_CONFIG_UPPER_N_MASK | AUD_CONFIG_LOWER_N_MASK)
+#define   AUD_CONFIG_N(n) \
+	(((((n) >> 12) & 0xff) << AUD_CONFIG_UPPER_N_SHIFT) |	\
+	 (((n) & 0xfff) << AUD_CONFIG_LOWER_N_SHIFT))
+#define   AUD_CONFIG_PIXEL_CLOCK_HDMI_SHIFT	16
+#define   AUD_CONFIG_PIXEL_CLOCK_HDMI_MASK	(0xf << 16)
+#define   AUD_CONFIG_PIXEL_CLOCK_HDMI_25175	(0 << 16)
+#define   AUD_CONFIG_PIXEL_CLOCK_HDMI_25200	(1 << 16)
+#define   AUD_CONFIG_PIXEL_CLOCK_HDMI_27000	(2 << 16)
+#define   AUD_CONFIG_PIXEL_CLOCK_HDMI_27027	(3 << 16)
+#define   AUD_CONFIG_PIXEL_CLOCK_HDMI_54000	(4 << 16)
+#define   AUD_CONFIG_PIXEL_CLOCK_HDMI_54054	(5 << 16)
+#define   AUD_CONFIG_PIXEL_CLOCK_HDMI_74176	(6 << 16)
+#define   AUD_CONFIG_PIXEL_CLOCK_HDMI_74250	(7 << 16)
+#define   AUD_CONFIG_PIXEL_CLOCK_HDMI_148352	(8 << 16)
+#define   AUD_CONFIG_PIXEL_CLOCK_HDMI_148500	(9 << 16)
+#define   AUD_CONFIG_PIXEL_CLOCK_HDMI_296703	(10 << 16)
+#define   AUD_CONFIG_PIXEL_CLOCK_HDMI_297000	(11 << 16)
+#define   AUD_CONFIG_PIXEL_CLOCK_HDMI_593407	(12 << 16)
+#define   AUD_CONFIG_PIXEL_CLOCK_HDMI_594000	(13 << 16)
+#define   AUD_CONFIG_DISABLE_NCTS		(1 << 3)
+
+#define _HSW_AUD_CONFIG_A		0x65000
+#define _HSW_AUD_CONFIG_B		0x65100
+#define HSW_AUD_CFG(trans)		_MMIO_TRANS(trans, _HSW_AUD_CONFIG_A, _HSW_AUD_CONFIG_B)
+
+#define _HSW_AUD_MISC_CTRL_A		0x65010
+#define _HSW_AUD_MISC_CTRL_B		0x65110
+#define HSW_AUD_MISC_CTRL(trans)	_MMIO_TRANS(trans, _HSW_AUD_MISC_CTRL_A, _HSW_AUD_MISC_CTRL_B)
+
+#define _HSW_AUD_M_CTS_ENABLE_A		0x65028
+#define _HSW_AUD_M_CTS_ENABLE_B		0x65128
+#define HSW_AUD_M_CTS_ENABLE(trans)	_MMIO_TRANS(trans, _HSW_AUD_M_CTS_ENABLE_A, _HSW_AUD_M_CTS_ENABLE_B)
+#define   AUD_M_CTS_M_VALUE_INDEX	(1 << 21)
+#define   AUD_M_CTS_M_PROG_ENABLE	(1 << 20)
+#define   AUD_CONFIG_M_MASK		0xfffff
+
+#define _HSW_AUD_DIP_ELD_CTRL_ST_A	0x650b4
+#define _HSW_AUD_DIP_ELD_CTRL_ST_B	0x651b4
+#define HSW_AUD_DIP_ELD_CTRL(trans)	_MMIO_TRANS(trans, _HSW_AUD_DIP_ELD_CTRL_ST_A, _HSW_AUD_DIP_ELD_CTRL_ST_B)
+
+/* Audio Digital Converter */
+#define _HSW_AUD_DIG_CNVT_1		0x65080
+#define _HSW_AUD_DIG_CNVT_2		0x65180
+#define AUD_DIG_CNVT(trans)		_MMIO_TRANS(trans, _HSW_AUD_DIG_CNVT_1, _HSW_AUD_DIG_CNVT_2)
+#define DIP_PORT_SEL_MASK		0x3
+
+#define _HSW_AUD_EDID_DATA_A		0x65050
+#define _HSW_AUD_EDID_DATA_B		0x65150
+#define HSW_AUD_EDID_DATA(trans)	_MMIO_TRANS(trans, _HSW_AUD_EDID_DATA_A, _HSW_AUD_EDID_DATA_B)
+
+#define HSW_AUD_PIPE_CONV_CFG		_MMIO(0x6507c)
+#define HSW_AUD_PIN_ELD_CP_VLD		_MMIO(0x650c0)
+#define   AUDIO_INACTIVE(trans)		((1 << 3) << ((trans) * 4))
+#define   AUDIO_OUTPUT_ENABLE(trans)	((1 << 2) << ((trans) * 4))
+#define   AUDIO_CP_READY(trans)		((1 << 1) << ((trans) * 4))
+#define   AUDIO_ELD_VALID(trans)	((1 << 0) << ((trans) * 4))
+
+#define _AUD_TCA_DP_2DOT0_CTRL		0x650bc
+#define _AUD_TCB_DP_2DOT0_CTRL		0x651bc
+#define AUD_DP_2DOT0_CTRL(trans)	_MMIO_TRANS(trans, _AUD_TCA_DP_2DOT0_CTRL, _AUD_TCB_DP_2DOT0_CTRL)
+#define  AUD_ENABLE_SDP_SPLIT		REG_BIT(31)
+
+#define HSW_AUD_CHICKENBIT			_MMIO(0x65f10)
+#define   SKL_AUD_CODEC_WAKE_SIGNAL		(1 << 15)
+
+#define AUD_FREQ_CNTRL			_MMIO(0x65900)
+#define AUD_PIN_BUF_CTL		_MMIO(0x48414)
+#define   AUD_PIN_BUF_ENABLE		REG_BIT(31)
+
+#define AUD_TS_CDCLK_M			_MMIO(0x65ea0)
+#define   AUD_TS_CDCLK_M_EN		REG_BIT(31)
+#define AUD_TS_CDCLK_N			_MMIO(0x65ea4)
+
+/* Display Audio Config Reg */
+#define AUD_CONFIG_BE			_MMIO(0x65ef0)
+#define HBLANK_EARLY_ENABLE_ICL(pipe)		(0x1 << (20 - (pipe)))
+#define HBLANK_EARLY_ENABLE_TGL(pipe)		(0x1 << (24 + (pipe)))
+#define HBLANK_START_COUNT_MASK(pipe)		(0x7 << (3 + ((pipe) * 6)))
+#define HBLANK_START_COUNT(pipe, val)		(((val) & 0x7) << (3 + ((pipe)) * 6))
+#define NUMBER_SAMPLES_PER_LINE_MASK(pipe)	(0x3 << ((pipe) * 6))
+#define NUMBER_SAMPLES_PER_LINE(pipe, val)	(((val) & 0x3) << ((pipe) * 6))
+
+#define HBLANK_START_COUNT_8	0
+#define HBLANK_START_COUNT_16	1
+#define HBLANK_START_COUNT_32	2
+#define HBLANK_START_COUNT_64	3
+#define HBLANK_START_COUNT_96	4
+#define HBLANK_START_COUNT_128	5
+
+#endif /* __INTEL_AUDIO_REGS_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_backlight.c b/drivers/gpu/drm/i915/display/intel_backlight.c
new file mode 100644
index 000000000..beba39a38
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_backlight.c
@@ -0,0 +1,1794 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#include <linux/backlight.h>
+#include <linux/kernel.h>
+#include <linux/pwm.h>
+#include <linux/string_helpers.h>
+
+#include <acpi/video.h>
+
+#include "intel_backlight.h"
+#include "intel_backlight_regs.h"
+#include "intel_connector.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_dp_aux_backlight.h"
+#include "intel_dsi_dcs_backlight.h"
+#include "intel_panel.h"
+#include "intel_pci_config.h"
+#include "intel_pps.h"
+#include "intel_quirks.h"
+
+/**
+ * scale - scale values from one range to another
+ * @source_val: value in range [@source_min..@source_max]
+ * @source_min: minimum legal value for @source_val
+ * @source_max: maximum legal value for @source_val
+ * @target_min: corresponding target value for @source_min
+ * @target_max: corresponding target value for @source_max
+ *
+ * Return @source_val in range [@source_min..@source_max] scaled to range
+ * [@target_min..@target_max].
+ */
+static u32 scale(u32 source_val,
+		 u32 source_min, u32 source_max,
+		 u32 target_min, u32 target_max)
+{
+	u64 target_val;
+
+	WARN_ON(source_min > source_max);
+	WARN_ON(target_min > target_max);
+
+	/* defensive */
+	source_val = clamp(source_val, source_min, source_max);
+
+	/* avoid overflows */
+	target_val = mul_u32_u32(source_val - source_min,
+				 target_max - target_min);
+	target_val = DIV_ROUND_CLOSEST_ULL(target_val, source_max - source_min);
+	target_val += target_min;
+
+	return target_val;
+}
+
+/*
+ * Scale user_level in range [0..user_max] to [0..hw_max], clamping the result
+ * to [hw_min..hw_max].
+ */
+static u32 clamp_user_to_hw(struct intel_connector *connector,
+			    u32 user_level, u32 user_max)
+{
+	struct intel_panel *panel = &connector->panel;
+	u32 hw_level;
+
+	hw_level = scale(user_level, 0, user_max, 0, panel->backlight.max);
+	hw_level = clamp(hw_level, panel->backlight.min, panel->backlight.max);
+
+	return hw_level;
+}
+
+/* Scale hw_level in range [hw_min..hw_max] to [0..user_max]. */
+static u32 scale_hw_to_user(struct intel_connector *connector,
+			    u32 hw_level, u32 user_max)
+{
+	struct intel_panel *panel = &connector->panel;
+
+	return scale(hw_level, panel->backlight.min, panel->backlight.max,
+		     0, user_max);
+}
+
+u32 intel_backlight_invert_pwm_level(struct intel_connector *connector, u32 val)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+
+	drm_WARN_ON(&dev_priv->drm, panel->backlight.pwm_level_max == 0);
+
+	if (dev_priv->params.invert_brightness < 0)
+		return val;
+
+	if (dev_priv->params.invert_brightness > 0 ||
+	    intel_has_quirk(dev_priv, QUIRK_INVERT_BRIGHTNESS)) {
+		return panel->backlight.pwm_level_max - val + panel->backlight.pwm_level_min;
+	}
+
+	return val;
+}
+
+void intel_backlight_set_pwm_level(const struct drm_connector_state *conn_state, u32 val)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+
+	drm_dbg_kms(&i915->drm, "set backlight PWM = %d\n", val);
+	panel->backlight.pwm_funcs->set(conn_state, val);
+}
+
+u32 intel_backlight_level_to_pwm(struct intel_connector *connector, u32 val)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+
+	drm_WARN_ON_ONCE(&dev_priv->drm,
+			 panel->backlight.max == 0 || panel->backlight.pwm_level_max == 0);
+
+	val = scale(val, panel->backlight.min, panel->backlight.max,
+		    panel->backlight.pwm_level_min, panel->backlight.pwm_level_max);
+
+	return intel_backlight_invert_pwm_level(connector, val);
+}
+
+u32 intel_backlight_level_from_pwm(struct intel_connector *connector, u32 val)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+
+	drm_WARN_ON_ONCE(&dev_priv->drm,
+			 panel->backlight.max == 0 || panel->backlight.pwm_level_max == 0);
+
+	if (dev_priv->params.invert_brightness > 0 ||
+	    (dev_priv->params.invert_brightness == 0 && intel_has_quirk(dev_priv, QUIRK_INVERT_BRIGHTNESS)))
+		val = panel->backlight.pwm_level_max - (val - panel->backlight.pwm_level_min);
+
+	return scale(val, panel->backlight.pwm_level_min, panel->backlight.pwm_level_max,
+		     panel->backlight.min, panel->backlight.max);
+}
+
+static u32 lpt_get_backlight(struct intel_connector *connector, enum pipe unused)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+
+	return intel_de_read(dev_priv, BLC_PWM_PCH_CTL2) & BACKLIGHT_DUTY_CYCLE_MASK;
+}
+
+static u32 pch_get_backlight(struct intel_connector *connector, enum pipe unused)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+
+	return intel_de_read(dev_priv, BLC_PWM_CPU_CTL) & BACKLIGHT_DUTY_CYCLE_MASK;
+}
+
+static u32 i9xx_get_backlight(struct intel_connector *connector, enum pipe unused)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+	u32 val;
+
+	val = intel_de_read(dev_priv, BLC_PWM_CTL) & BACKLIGHT_DUTY_CYCLE_MASK;
+	if (DISPLAY_VER(dev_priv) < 4)
+		val >>= 1;
+
+	if (panel->backlight.combination_mode) {
+		u8 lbpc;
+
+		pci_read_config_byte(to_pci_dev(dev_priv->drm.dev), LBPC, &lbpc);
+		val *= lbpc;
+	}
+
+	return val;
+}
+
+static u32 vlv_get_backlight(struct intel_connector *connector, enum pipe pipe)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+
+	if (drm_WARN_ON(&dev_priv->drm, pipe != PIPE_A && pipe != PIPE_B))
+		return 0;
+
+	return intel_de_read(dev_priv, VLV_BLC_PWM_CTL(pipe)) & BACKLIGHT_DUTY_CYCLE_MASK;
+}
+
+static u32 bxt_get_backlight(struct intel_connector *connector, enum pipe unused)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+
+	return intel_de_read(dev_priv,
+			     BXT_BLC_PWM_DUTY(panel->backlight.controller));
+}
+
+static u32 ext_pwm_get_backlight(struct intel_connector *connector, enum pipe unused)
+{
+	struct intel_panel *panel = &connector->panel;
+	struct pwm_state state;
+
+	pwm_get_state(panel->backlight.pwm, &state);
+	return pwm_get_relative_duty_cycle(&state, 100);
+}
+
+static void lpt_set_backlight(const struct drm_connector_state *conn_state, u32 level)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+
+	u32 val = intel_de_read(dev_priv, BLC_PWM_PCH_CTL2) & ~BACKLIGHT_DUTY_CYCLE_MASK;
+	intel_de_write(dev_priv, BLC_PWM_PCH_CTL2, val | level);
+}
+
+static void pch_set_backlight(const struct drm_connector_state *conn_state, u32 level)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	u32 tmp;
+
+	tmp = intel_de_read(dev_priv, BLC_PWM_CPU_CTL) & ~BACKLIGHT_DUTY_CYCLE_MASK;
+	intel_de_write(dev_priv, BLC_PWM_CPU_CTL, tmp | level);
+}
+
+static void i9xx_set_backlight(const struct drm_connector_state *conn_state, u32 level)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+	u32 tmp, mask;
+
+	drm_WARN_ON(&dev_priv->drm, panel->backlight.pwm_level_max == 0);
+
+	if (panel->backlight.combination_mode) {
+		u8 lbpc;
+
+		lbpc = level * 0xfe / panel->backlight.pwm_level_max + 1;
+		level /= lbpc;
+		pci_write_config_byte(to_pci_dev(dev_priv->drm.dev), LBPC, lbpc);
+	}
+
+	if (DISPLAY_VER(dev_priv) == 4) {
+		mask = BACKLIGHT_DUTY_CYCLE_MASK;
+	} else {
+		level <<= 1;
+		mask = BACKLIGHT_DUTY_CYCLE_MASK_PNV;
+	}
+
+	tmp = intel_de_read(dev_priv, BLC_PWM_CTL) & ~mask;
+	intel_de_write(dev_priv, BLC_PWM_CTL, tmp | level);
+}
+
+static void vlv_set_backlight(const struct drm_connector_state *conn_state, u32 level)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	enum pipe pipe = to_intel_crtc(conn_state->crtc)->pipe;
+	u32 tmp;
+
+	tmp = intel_de_read(dev_priv, VLV_BLC_PWM_CTL(pipe)) & ~BACKLIGHT_DUTY_CYCLE_MASK;
+	intel_de_write(dev_priv, VLV_BLC_PWM_CTL(pipe), tmp | level);
+}
+
+static void bxt_set_backlight(const struct drm_connector_state *conn_state, u32 level)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+
+	intel_de_write(dev_priv,
+		       BXT_BLC_PWM_DUTY(panel->backlight.controller), level);
+}
+
+static void ext_pwm_set_backlight(const struct drm_connector_state *conn_state, u32 level)
+{
+	struct intel_panel *panel = &to_intel_connector(conn_state->connector)->panel;
+
+	pwm_set_relative_duty_cycle(&panel->backlight.pwm_state, level, 100);
+	pwm_apply_state(panel->backlight.pwm, &panel->backlight.pwm_state);
+}
+
+static void
+intel_panel_actually_set_backlight(const struct drm_connector_state *conn_state, u32 level)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+
+	drm_dbg_kms(&i915->drm, "set backlight level = %d\n", level);
+
+	panel->backlight.funcs->set(conn_state, level);
+}
+
+/* set backlight brightness to level in range [0..max], assuming hw min is
+ * respected.
+ */
+void intel_backlight_set_acpi(const struct drm_connector_state *conn_state,
+			      u32 user_level, u32 user_max)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+	u32 hw_level;
+
+	/*
+	 * Lack of crtc may occur during driver init because
+	 * connection_mutex isn't held across the entire backlight
+	 * setup + modeset readout, and the BIOS can issue the
+	 * requests at any time.
+	 */
+	if (!panel->backlight.present || !conn_state->crtc)
+		return;
+
+	mutex_lock(&dev_priv->display.backlight.lock);
+
+	drm_WARN_ON(&dev_priv->drm, panel->backlight.max == 0);
+
+	hw_level = clamp_user_to_hw(connector, user_level, user_max);
+	panel->backlight.level = hw_level;
+
+	if (panel->backlight.device)
+		panel->backlight.device->props.brightness =
+			scale_hw_to_user(connector,
+					 panel->backlight.level,
+					 panel->backlight.device->props.max_brightness);
+
+	if (panel->backlight.enabled)
+		intel_panel_actually_set_backlight(conn_state, hw_level);
+
+	mutex_unlock(&dev_priv->display.backlight.lock);
+}
+
+static void lpt_disable_backlight(const struct drm_connector_state *old_conn_state, u32 level)
+{
+	struct intel_connector *connector = to_intel_connector(old_conn_state->connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	u32 tmp;
+
+	intel_backlight_set_pwm_level(old_conn_state, level);
+
+	/*
+	 * Although we don't support or enable CPU PWM with LPT/SPT based
+	 * systems, it may have been enabled prior to loading the
+	 * driver. Disable to avoid warnings on LCPLL disable.
+	 *
+	 * This needs rework if we need to add support for CPU PWM on PCH split
+	 * platforms.
+	 */
+	tmp = intel_de_read(dev_priv, BLC_PWM_CPU_CTL2);
+	if (tmp & BLM_PWM_ENABLE) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "cpu backlight was enabled, disabling\n");
+		intel_de_write(dev_priv, BLC_PWM_CPU_CTL2,
+			       tmp & ~BLM_PWM_ENABLE);
+	}
+
+	tmp = intel_de_read(dev_priv, BLC_PWM_PCH_CTL1);
+	intel_de_write(dev_priv, BLC_PWM_PCH_CTL1, tmp & ~BLM_PCH_PWM_ENABLE);
+}
+
+static void pch_disable_backlight(const struct drm_connector_state *old_conn_state, u32 val)
+{
+	struct intel_connector *connector = to_intel_connector(old_conn_state->connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	u32 tmp;
+
+	intel_backlight_set_pwm_level(old_conn_state, val);
+
+	tmp = intel_de_read(dev_priv, BLC_PWM_CPU_CTL2);
+	intel_de_write(dev_priv, BLC_PWM_CPU_CTL2, tmp & ~BLM_PWM_ENABLE);
+
+	tmp = intel_de_read(dev_priv, BLC_PWM_PCH_CTL1);
+	intel_de_write(dev_priv, BLC_PWM_PCH_CTL1, tmp & ~BLM_PCH_PWM_ENABLE);
+}
+
+static void i9xx_disable_backlight(const struct drm_connector_state *old_conn_state, u32 val)
+{
+	intel_backlight_set_pwm_level(old_conn_state, val);
+}
+
+static void i965_disable_backlight(const struct drm_connector_state *old_conn_state, u32 val)
+{
+	struct drm_i915_private *dev_priv = to_i915(old_conn_state->connector->dev);
+	u32 tmp;
+
+	intel_backlight_set_pwm_level(old_conn_state, val);
+
+	tmp = intel_de_read(dev_priv, BLC_PWM_CTL2);
+	intel_de_write(dev_priv, BLC_PWM_CTL2, tmp & ~BLM_PWM_ENABLE);
+}
+
+static void vlv_disable_backlight(const struct drm_connector_state *old_conn_state, u32 val)
+{
+	struct intel_connector *connector = to_intel_connector(old_conn_state->connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	enum pipe pipe = to_intel_crtc(old_conn_state->crtc)->pipe;
+	u32 tmp;
+
+	intel_backlight_set_pwm_level(old_conn_state, val);
+
+	tmp = intel_de_read(dev_priv, VLV_BLC_PWM_CTL2(pipe));
+	intel_de_write(dev_priv, VLV_BLC_PWM_CTL2(pipe),
+		       tmp & ~BLM_PWM_ENABLE);
+}
+
+static void bxt_disable_backlight(const struct drm_connector_state *old_conn_state, u32 val)
+{
+	struct intel_connector *connector = to_intel_connector(old_conn_state->connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+	u32 tmp;
+
+	intel_backlight_set_pwm_level(old_conn_state, val);
+
+	tmp = intel_de_read(dev_priv,
+			    BXT_BLC_PWM_CTL(panel->backlight.controller));
+	intel_de_write(dev_priv, BXT_BLC_PWM_CTL(panel->backlight.controller),
+		       tmp & ~BXT_BLC_PWM_ENABLE);
+
+	if (panel->backlight.controller == 1) {
+		val = intel_de_read(dev_priv, UTIL_PIN_CTL);
+		val &= ~UTIL_PIN_ENABLE;
+		intel_de_write(dev_priv, UTIL_PIN_CTL, val);
+	}
+}
+
+static void cnp_disable_backlight(const struct drm_connector_state *old_conn_state, u32 val)
+{
+	struct intel_connector *connector = to_intel_connector(old_conn_state->connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+	u32 tmp;
+
+	intel_backlight_set_pwm_level(old_conn_state, val);
+
+	tmp = intel_de_read(dev_priv,
+			    BXT_BLC_PWM_CTL(panel->backlight.controller));
+	intel_de_write(dev_priv, BXT_BLC_PWM_CTL(panel->backlight.controller),
+		       tmp & ~BXT_BLC_PWM_ENABLE);
+}
+
+static void ext_pwm_disable_backlight(const struct drm_connector_state *old_conn_state, u32 level)
+{
+	struct intel_connector *connector = to_intel_connector(old_conn_state->connector);
+	struct intel_panel *panel = &connector->panel;
+
+	intel_backlight_set_pwm_level(old_conn_state, level);
+
+	panel->backlight.pwm_state.enabled = false;
+	pwm_apply_state(panel->backlight.pwm, &panel->backlight.pwm_state);
+}
+
+void intel_backlight_disable(const struct drm_connector_state *old_conn_state)
+{
+	struct intel_connector *connector = to_intel_connector(old_conn_state->connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+
+	if (!panel->backlight.present)
+		return;
+
+	/*
+	 * Do not disable backlight on the vga_switcheroo path. When switching
+	 * away from i915, the other client may depend on i915 to handle the
+	 * backlight. This will leave the backlight on unnecessarily when
+	 * another client is not activated.
+	 */
+	if (dev_priv->drm.switch_power_state == DRM_SWITCH_POWER_CHANGING) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Skipping backlight disable on vga switch\n");
+		return;
+	}
+
+	mutex_lock(&dev_priv->display.backlight.lock);
+
+	if (panel->backlight.device)
+		panel->backlight.device->props.power = FB_BLANK_POWERDOWN;
+	panel->backlight.enabled = false;
+	panel->backlight.funcs->disable(old_conn_state, 0);
+
+	mutex_unlock(&dev_priv->display.backlight.lock);
+}
+
+static void lpt_enable_backlight(const struct intel_crtc_state *crtc_state,
+				 const struct drm_connector_state *conn_state, u32 level)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+	u32 pch_ctl1, pch_ctl2, schicken;
+
+	pch_ctl1 = intel_de_read(dev_priv, BLC_PWM_PCH_CTL1);
+	if (pch_ctl1 & BLM_PCH_PWM_ENABLE) {
+		drm_dbg_kms(&dev_priv->drm, "pch backlight already enabled\n");
+		pch_ctl1 &= ~BLM_PCH_PWM_ENABLE;
+		intel_de_write(dev_priv, BLC_PWM_PCH_CTL1, pch_ctl1);
+	}
+
+	if (HAS_PCH_LPT(dev_priv)) {
+		schicken = intel_de_read(dev_priv, SOUTH_CHICKEN2);
+		if (panel->backlight.alternate_pwm_increment)
+			schicken |= LPT_PWM_GRANULARITY;
+		else
+			schicken &= ~LPT_PWM_GRANULARITY;
+		intel_de_write(dev_priv, SOUTH_CHICKEN2, schicken);
+	} else {
+		schicken = intel_de_read(dev_priv, SOUTH_CHICKEN1);
+		if (panel->backlight.alternate_pwm_increment)
+			schicken |= SPT_PWM_GRANULARITY;
+		else
+			schicken &= ~SPT_PWM_GRANULARITY;
+		intel_de_write(dev_priv, SOUTH_CHICKEN1, schicken);
+	}
+
+	pch_ctl2 = panel->backlight.pwm_level_max << 16;
+	intel_de_write(dev_priv, BLC_PWM_PCH_CTL2, pch_ctl2);
+
+	pch_ctl1 = 0;
+	if (panel->backlight.active_low_pwm)
+		pch_ctl1 |= BLM_PCH_POLARITY;
+
+	/* After LPT, override is the default. */
+	if (HAS_PCH_LPT(dev_priv))
+		pch_ctl1 |= BLM_PCH_OVERRIDE_ENABLE;
+
+	intel_de_write(dev_priv, BLC_PWM_PCH_CTL1, pch_ctl1);
+	intel_de_posting_read(dev_priv, BLC_PWM_PCH_CTL1);
+	intel_de_write(dev_priv, BLC_PWM_PCH_CTL1,
+		       pch_ctl1 | BLM_PCH_PWM_ENABLE);
+
+	/* This won't stick until the above enable. */
+	intel_backlight_set_pwm_level(conn_state, level);
+}
+
+static void pch_enable_backlight(const struct intel_crtc_state *crtc_state,
+				 const struct drm_connector_state *conn_state, u32 level)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+	u32 cpu_ctl2, pch_ctl1, pch_ctl2;
+
+	cpu_ctl2 = intel_de_read(dev_priv, BLC_PWM_CPU_CTL2);
+	if (cpu_ctl2 & BLM_PWM_ENABLE) {
+		drm_dbg_kms(&dev_priv->drm, "cpu backlight already enabled\n");
+		cpu_ctl2 &= ~BLM_PWM_ENABLE;
+		intel_de_write(dev_priv, BLC_PWM_CPU_CTL2, cpu_ctl2);
+	}
+
+	pch_ctl1 = intel_de_read(dev_priv, BLC_PWM_PCH_CTL1);
+	if (pch_ctl1 & BLM_PCH_PWM_ENABLE) {
+		drm_dbg_kms(&dev_priv->drm, "pch backlight already enabled\n");
+		pch_ctl1 &= ~BLM_PCH_PWM_ENABLE;
+		intel_de_write(dev_priv, BLC_PWM_PCH_CTL1, pch_ctl1);
+	}
+
+	if (cpu_transcoder == TRANSCODER_EDP)
+		cpu_ctl2 = BLM_TRANSCODER_EDP;
+	else
+		cpu_ctl2 = BLM_PIPE(cpu_transcoder);
+	intel_de_write(dev_priv, BLC_PWM_CPU_CTL2, cpu_ctl2);
+	intel_de_posting_read(dev_priv, BLC_PWM_CPU_CTL2);
+	intel_de_write(dev_priv, BLC_PWM_CPU_CTL2, cpu_ctl2 | BLM_PWM_ENABLE);
+
+	/* This won't stick until the above enable. */
+	intel_backlight_set_pwm_level(conn_state, level);
+
+	pch_ctl2 = panel->backlight.pwm_level_max << 16;
+	intel_de_write(dev_priv, BLC_PWM_PCH_CTL2, pch_ctl2);
+
+	pch_ctl1 = 0;
+	if (panel->backlight.active_low_pwm)
+		pch_ctl1 |= BLM_PCH_POLARITY;
+
+	intel_de_write(dev_priv, BLC_PWM_PCH_CTL1, pch_ctl1);
+	intel_de_posting_read(dev_priv, BLC_PWM_PCH_CTL1);
+	intel_de_write(dev_priv, BLC_PWM_PCH_CTL1,
+		       pch_ctl1 | BLM_PCH_PWM_ENABLE);
+}
+
+static void i9xx_enable_backlight(const struct intel_crtc_state *crtc_state,
+				  const struct drm_connector_state *conn_state, u32 level)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+	u32 ctl, freq;
+
+	ctl = intel_de_read(dev_priv, BLC_PWM_CTL);
+	if (ctl & BACKLIGHT_DUTY_CYCLE_MASK_PNV) {
+		drm_dbg_kms(&dev_priv->drm, "backlight already enabled\n");
+		intel_de_write(dev_priv, BLC_PWM_CTL, 0);
+	}
+
+	freq = panel->backlight.pwm_level_max;
+	if (panel->backlight.combination_mode)
+		freq /= 0xff;
+
+	ctl = freq << 17;
+	if (panel->backlight.combination_mode)
+		ctl |= BLM_LEGACY_MODE;
+	if (IS_PINEVIEW(dev_priv) && panel->backlight.active_low_pwm)
+		ctl |= BLM_POLARITY_PNV;
+
+	intel_de_write(dev_priv, BLC_PWM_CTL, ctl);
+	intel_de_posting_read(dev_priv, BLC_PWM_CTL);
+
+	/* XXX: combine this into above write? */
+	intel_backlight_set_pwm_level(conn_state, level);
+
+	/*
+	 * Needed to enable backlight on some 855gm models. BLC_HIST_CTL is
+	 * 855gm only, but checking for gen2 is safe, as 855gm is the only gen2
+	 * that has backlight.
+	 */
+	if (DISPLAY_VER(dev_priv) == 2)
+		intel_de_write(dev_priv, BLC_HIST_CTL, BLM_HISTOGRAM_ENABLE);
+}
+
+static void i965_enable_backlight(const struct intel_crtc_state *crtc_state,
+				  const struct drm_connector_state *conn_state, u32 level)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+	enum pipe pipe = to_intel_crtc(conn_state->crtc)->pipe;
+	u32 ctl, ctl2, freq;
+
+	ctl2 = intel_de_read(dev_priv, BLC_PWM_CTL2);
+	if (ctl2 & BLM_PWM_ENABLE) {
+		drm_dbg_kms(&dev_priv->drm, "backlight already enabled\n");
+		ctl2 &= ~BLM_PWM_ENABLE;
+		intel_de_write(dev_priv, BLC_PWM_CTL2, ctl2);
+	}
+
+	freq = panel->backlight.pwm_level_max;
+	if (panel->backlight.combination_mode)
+		freq /= 0xff;
+
+	ctl = freq << 16;
+	intel_de_write(dev_priv, BLC_PWM_CTL, ctl);
+
+	ctl2 = BLM_PIPE(pipe);
+	if (panel->backlight.combination_mode)
+		ctl2 |= BLM_COMBINATION_MODE;
+	if (panel->backlight.active_low_pwm)
+		ctl2 |= BLM_POLARITY_I965;
+	intel_de_write(dev_priv, BLC_PWM_CTL2, ctl2);
+	intel_de_posting_read(dev_priv, BLC_PWM_CTL2);
+	intel_de_write(dev_priv, BLC_PWM_CTL2, ctl2 | BLM_PWM_ENABLE);
+
+	intel_backlight_set_pwm_level(conn_state, level);
+}
+
+static void vlv_enable_backlight(const struct intel_crtc_state *crtc_state,
+				 const struct drm_connector_state *conn_state, u32 level)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+	enum pipe pipe = to_intel_crtc(crtc_state->uapi.crtc)->pipe;
+	u32 ctl, ctl2;
+
+	ctl2 = intel_de_read(dev_priv, VLV_BLC_PWM_CTL2(pipe));
+	if (ctl2 & BLM_PWM_ENABLE) {
+		drm_dbg_kms(&dev_priv->drm, "backlight already enabled\n");
+		ctl2 &= ~BLM_PWM_ENABLE;
+		intel_de_write(dev_priv, VLV_BLC_PWM_CTL2(pipe), ctl2);
+	}
+
+	ctl = panel->backlight.pwm_level_max << 16;
+	intel_de_write(dev_priv, VLV_BLC_PWM_CTL(pipe), ctl);
+
+	/* XXX: combine this into above write? */
+	intel_backlight_set_pwm_level(conn_state, level);
+
+	ctl2 = 0;
+	if (panel->backlight.active_low_pwm)
+		ctl2 |= BLM_POLARITY_I965;
+	intel_de_write(dev_priv, VLV_BLC_PWM_CTL2(pipe), ctl2);
+	intel_de_posting_read(dev_priv, VLV_BLC_PWM_CTL2(pipe));
+	intel_de_write(dev_priv, VLV_BLC_PWM_CTL2(pipe),
+		       ctl2 | BLM_PWM_ENABLE);
+}
+
+static void bxt_enable_backlight(const struct intel_crtc_state *crtc_state,
+				 const struct drm_connector_state *conn_state, u32 level)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+	enum pipe pipe = to_intel_crtc(crtc_state->uapi.crtc)->pipe;
+	u32 pwm_ctl, val;
+
+	/* Controller 1 uses the utility pin. */
+	if (panel->backlight.controller == 1) {
+		val = intel_de_read(dev_priv, UTIL_PIN_CTL);
+		if (val & UTIL_PIN_ENABLE) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "util pin already enabled\n");
+			val &= ~UTIL_PIN_ENABLE;
+			intel_de_write(dev_priv, UTIL_PIN_CTL, val);
+		}
+
+		val = 0;
+		if (panel->backlight.util_pin_active_low)
+			val |= UTIL_PIN_POLARITY;
+		intel_de_write(dev_priv, UTIL_PIN_CTL,
+			       val | UTIL_PIN_PIPE(pipe) | UTIL_PIN_MODE_PWM | UTIL_PIN_ENABLE);
+	}
+
+	pwm_ctl = intel_de_read(dev_priv,
+				BXT_BLC_PWM_CTL(panel->backlight.controller));
+	if (pwm_ctl & BXT_BLC_PWM_ENABLE) {
+		drm_dbg_kms(&dev_priv->drm, "backlight already enabled\n");
+		pwm_ctl &= ~BXT_BLC_PWM_ENABLE;
+		intel_de_write(dev_priv,
+			       BXT_BLC_PWM_CTL(panel->backlight.controller),
+			       pwm_ctl);
+	}
+
+	intel_de_write(dev_priv,
+		       BXT_BLC_PWM_FREQ(panel->backlight.controller),
+		       panel->backlight.pwm_level_max);
+
+	intel_backlight_set_pwm_level(conn_state, level);
+
+	pwm_ctl = 0;
+	if (panel->backlight.active_low_pwm)
+		pwm_ctl |= BXT_BLC_PWM_POLARITY;
+
+	intel_de_write(dev_priv, BXT_BLC_PWM_CTL(panel->backlight.controller),
+		       pwm_ctl);
+	intel_de_posting_read(dev_priv,
+			      BXT_BLC_PWM_CTL(panel->backlight.controller));
+	intel_de_write(dev_priv, BXT_BLC_PWM_CTL(panel->backlight.controller),
+		       pwm_ctl | BXT_BLC_PWM_ENABLE);
+}
+
+static void cnp_enable_backlight(const struct intel_crtc_state *crtc_state,
+				 const struct drm_connector_state *conn_state, u32 level)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+	u32 pwm_ctl;
+
+	pwm_ctl = intel_de_read(dev_priv,
+				BXT_BLC_PWM_CTL(panel->backlight.controller));
+	if (pwm_ctl & BXT_BLC_PWM_ENABLE) {
+		drm_dbg_kms(&dev_priv->drm, "backlight already enabled\n");
+		pwm_ctl &= ~BXT_BLC_PWM_ENABLE;
+		intel_de_write(dev_priv,
+			       BXT_BLC_PWM_CTL(panel->backlight.controller),
+			       pwm_ctl);
+	}
+
+	intel_de_write(dev_priv,
+		       BXT_BLC_PWM_FREQ(panel->backlight.controller),
+		       panel->backlight.pwm_level_max);
+
+	intel_backlight_set_pwm_level(conn_state, level);
+
+	pwm_ctl = 0;
+	if (panel->backlight.active_low_pwm)
+		pwm_ctl |= BXT_BLC_PWM_POLARITY;
+
+	intel_de_write(dev_priv, BXT_BLC_PWM_CTL(panel->backlight.controller),
+		       pwm_ctl);
+	intel_de_posting_read(dev_priv,
+			      BXT_BLC_PWM_CTL(panel->backlight.controller));
+	intel_de_write(dev_priv, BXT_BLC_PWM_CTL(panel->backlight.controller),
+		       pwm_ctl | BXT_BLC_PWM_ENABLE);
+}
+
+static void ext_pwm_enable_backlight(const struct intel_crtc_state *crtc_state,
+				     const struct drm_connector_state *conn_state, u32 level)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct intel_panel *panel = &connector->panel;
+
+	pwm_set_relative_duty_cycle(&panel->backlight.pwm_state, level, 100);
+	panel->backlight.pwm_state.enabled = true;
+	pwm_apply_state(panel->backlight.pwm, &panel->backlight.pwm_state);
+}
+
+static void __intel_backlight_enable(const struct intel_crtc_state *crtc_state,
+				     const struct drm_connector_state *conn_state)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct intel_panel *panel = &connector->panel;
+
+	WARN_ON(panel->backlight.max == 0);
+
+	if (panel->backlight.level <= panel->backlight.min) {
+		panel->backlight.level = panel->backlight.max;
+		if (panel->backlight.device)
+			panel->backlight.device->props.brightness =
+				scale_hw_to_user(connector,
+						 panel->backlight.level,
+						 panel->backlight.device->props.max_brightness);
+	}
+
+	panel->backlight.funcs->enable(crtc_state, conn_state, panel->backlight.level);
+	panel->backlight.enabled = true;
+	if (panel->backlight.device)
+		panel->backlight.device->props.power = FB_BLANK_UNBLANK;
+}
+
+void intel_backlight_enable(const struct intel_crtc_state *crtc_state,
+			    const struct drm_connector_state *conn_state)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+	enum pipe pipe = to_intel_crtc(crtc_state->uapi.crtc)->pipe;
+
+	if (!panel->backlight.present)
+		return;
+
+	drm_dbg_kms(&dev_priv->drm, "pipe %c\n", pipe_name(pipe));
+
+	mutex_lock(&dev_priv->display.backlight.lock);
+
+	__intel_backlight_enable(crtc_state, conn_state);
+
+	mutex_unlock(&dev_priv->display.backlight.lock);
+}
+
+#if IS_ENABLED(CONFIG_BACKLIGHT_CLASS_DEVICE)
+static u32 intel_panel_get_backlight(struct intel_connector *connector)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+	u32 val = 0;
+
+	mutex_lock(&dev_priv->display.backlight.lock);
+
+	if (panel->backlight.enabled)
+		val = panel->backlight.funcs->get(connector, intel_connector_get_pipe(connector));
+
+	mutex_unlock(&dev_priv->display.backlight.lock);
+
+	drm_dbg_kms(&dev_priv->drm, "get backlight PWM = %d\n", val);
+	return val;
+}
+
+/* Scale user_level in range [0..user_max] to [hw_min..hw_max]. */
+static u32 scale_user_to_hw(struct intel_connector *connector,
+			    u32 user_level, u32 user_max)
+{
+	struct intel_panel *panel = &connector->panel;
+
+	return scale(user_level, 0, user_max,
+		     panel->backlight.min, panel->backlight.max);
+}
+
+/* set backlight brightness to level in range [0..max], scaling wrt hw min */
+static void intel_panel_set_backlight(const struct drm_connector_state *conn_state,
+				      u32 user_level, u32 user_max)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+	u32 hw_level;
+
+	if (!panel->backlight.present)
+		return;
+
+	mutex_lock(&dev_priv->display.backlight.lock);
+
+	drm_WARN_ON(&dev_priv->drm, panel->backlight.max == 0);
+
+	hw_level = scale_user_to_hw(connector, user_level, user_max);
+	panel->backlight.level = hw_level;
+
+	if (panel->backlight.enabled)
+		intel_panel_actually_set_backlight(conn_state, hw_level);
+
+	mutex_unlock(&dev_priv->display.backlight.lock);
+}
+
+static int intel_backlight_device_update_status(struct backlight_device *bd)
+{
+	struct intel_connector *connector = bl_get_data(bd);
+	struct intel_panel *panel = &connector->panel;
+	struct drm_device *dev = connector->base.dev;
+
+	drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
+	DRM_DEBUG_KMS("updating intel_backlight, brightness=%d/%d\n",
+		      bd->props.brightness, bd->props.max_brightness);
+	intel_panel_set_backlight(connector->base.state, bd->props.brightness,
+				  bd->props.max_brightness);
+
+	/*
+	 * Allow flipping bl_power as a sub-state of enabled. Sadly the
+	 * backlight class device does not make it easy to differentiate
+	 * between callbacks for brightness and bl_power, so our backlight_power
+	 * callback needs to take this into account.
+	 */
+	if (panel->backlight.enabled) {
+		if (panel->backlight.power) {
+			bool enable = bd->props.power == FB_BLANK_UNBLANK &&
+				bd->props.brightness != 0;
+			panel->backlight.power(connector, enable);
+		}
+	} else {
+		bd->props.power = FB_BLANK_POWERDOWN;
+	}
+
+	drm_modeset_unlock(&dev->mode_config.connection_mutex);
+	return 0;
+}
+
+static int intel_backlight_device_get_brightness(struct backlight_device *bd)
+{
+	struct intel_connector *connector = bl_get_data(bd);
+	struct drm_device *dev = connector->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	intel_wakeref_t wakeref;
+	int ret = 0;
+
+	with_intel_runtime_pm(&dev_priv->runtime_pm, wakeref) {
+		u32 hw_level;
+
+		drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
+
+		hw_level = intel_panel_get_backlight(connector);
+		ret = scale_hw_to_user(connector,
+				       hw_level, bd->props.max_brightness);
+
+		drm_modeset_unlock(&dev->mode_config.connection_mutex);
+	}
+
+	return ret;
+}
+
+static const struct backlight_ops intel_backlight_device_ops = {
+	.update_status = intel_backlight_device_update_status,
+	.get_brightness = intel_backlight_device_get_brightness,
+};
+
+int intel_backlight_device_register(struct intel_connector *connector)
+{
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+	struct backlight_properties props;
+	struct backlight_device *bd;
+	const char *name;
+	int ret = 0;
+
+	if (WARN_ON(panel->backlight.device))
+		return -ENODEV;
+
+	if (!panel->backlight.present)
+		return 0;
+
+	WARN_ON(panel->backlight.max == 0);
+
+	if (!acpi_video_backlight_use_native()) {
+		drm_info(&i915->drm, "Skipping intel_backlight registration\n");
+		return 0;
+	}
+
+	memset(&props, 0, sizeof(props));
+	props.type = BACKLIGHT_RAW;
+
+	/*
+	 * Note: Everything should work even if the backlight device max
+	 * presented to the userspace is arbitrarily chosen.
+	 */
+	props.max_brightness = panel->backlight.max;
+	props.brightness = scale_hw_to_user(connector,
+					    panel->backlight.level,
+					    props.max_brightness);
+
+	if (panel->backlight.enabled)
+		props.power = FB_BLANK_UNBLANK;
+	else
+		props.power = FB_BLANK_POWERDOWN;
+
+	name = kstrdup("intel_backlight", GFP_KERNEL);
+	if (!name)
+		return -ENOMEM;
+
+	bd = backlight_device_get_by_name(name);
+	if (bd) {
+		put_device(&bd->dev);
+		/*
+		 * Using the same name independent of the drm device or connector
+		 * prevents registration of multiple backlight devices in the
+		 * driver. However, we need to use the default name for backward
+		 * compatibility. Use unique names for subsequent backlight devices as a
+		 * fallback when the default name already exists.
+		 */
+		kfree(name);
+		name = kasprintf(GFP_KERNEL, "card%d-%s-backlight",
+				 i915->drm.primary->index, connector->base.name);
+		if (!name)
+			return -ENOMEM;
+	}
+	bd = backlight_device_register(name, connector->base.kdev, connector,
+				       &intel_backlight_device_ops, &props);
+
+	if (IS_ERR(bd)) {
+		drm_err(&i915->drm,
+			"[CONNECTOR:%d:%s] backlight device %s register failed: %ld\n",
+			connector->base.base.id, connector->base.name, name, PTR_ERR(bd));
+		ret = PTR_ERR(bd);
+		goto out;
+	}
+
+	panel->backlight.device = bd;
+
+	drm_dbg_kms(&i915->drm,
+		    "[CONNECTOR:%d:%s] backlight device %s registered\n",
+		    connector->base.base.id, connector->base.name, name);
+
+out:
+	kfree(name);
+
+	return ret;
+}
+
+void intel_backlight_device_unregister(struct intel_connector *connector)
+{
+	struct intel_panel *panel = &connector->panel;
+
+	if (panel->backlight.device) {
+		backlight_device_unregister(panel->backlight.device);
+		panel->backlight.device = NULL;
+	}
+}
+#endif /* CONFIG_BACKLIGHT_CLASS_DEVICE */
+
+/*
+ * CNP: PWM clock frequency is 19.2 MHz or 24 MHz.
+ *      PWM increment = 1
+ */
+static u32 cnp_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+
+	return DIV_ROUND_CLOSEST(KHz(RUNTIME_INFO(dev_priv)->rawclk_freq),
+				 pwm_freq_hz);
+}
+
+/*
+ * BXT: PWM clock frequency = 19.2 MHz.
+ */
+static u32 bxt_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
+{
+	return DIV_ROUND_CLOSEST(KHz(19200), pwm_freq_hz);
+}
+
+/*
+ * SPT: This value represents the period of the PWM stream in clock periods
+ * multiplied by 16 (default increment) or 128 (alternate increment selected in
+ * SCHICKEN_1 bit 0). PWM clock is 24 MHz.
+ */
+static u32 spt_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
+{
+	struct intel_panel *panel = &connector->panel;
+	u32 mul;
+
+	if (panel->backlight.alternate_pwm_increment)
+		mul = 128;
+	else
+		mul = 16;
+
+	return DIV_ROUND_CLOSEST(MHz(24), pwm_freq_hz * mul);
+}
+
+/*
+ * LPT: This value represents the period of the PWM stream in clock periods
+ * multiplied by 128 (default increment) or 16 (alternate increment, selected in
+ * LPT SOUTH_CHICKEN2 register bit 5).
+ */
+static u32 lpt_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+	u32 mul, clock;
+
+	if (panel->backlight.alternate_pwm_increment)
+		mul = 16;
+	else
+		mul = 128;
+
+	if (HAS_PCH_LPT_H(dev_priv))
+		clock = MHz(135); /* LPT:H */
+	else
+		clock = MHz(24); /* LPT:LP */
+
+	return DIV_ROUND_CLOSEST(clock, pwm_freq_hz * mul);
+}
+
+/*
+ * ILK/SNB/IVB: This value represents the period of the PWM stream in PCH
+ * display raw clocks multiplied by 128.
+ */
+static u32 pch_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+
+	return DIV_ROUND_CLOSEST(KHz(RUNTIME_INFO(dev_priv)->rawclk_freq),
+				 pwm_freq_hz * 128);
+}
+
+/*
+ * Gen2: This field determines the number of time base events (display core
+ * clock frequency/32) in total for a complete cycle of modulated backlight
+ * control.
+ *
+ * Gen3: A time base event equals the display core clock ([DevPNV] HRAW clock)
+ * divided by 32.
+ */
+static u32 i9xx_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	int clock;
+
+	if (IS_PINEVIEW(dev_priv))
+		clock = KHz(RUNTIME_INFO(dev_priv)->rawclk_freq);
+	else
+		clock = KHz(dev_priv->display.cdclk.hw.cdclk);
+
+	return DIV_ROUND_CLOSEST(clock, pwm_freq_hz * 32);
+}
+
+/*
+ * Gen4: This value represents the period of the PWM stream in display core
+ * clocks ([DevCTG] HRAW clocks) multiplied by 128.
+ *
+ */
+static u32 i965_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	int clock;
+
+	if (IS_G4X(dev_priv))
+		clock = KHz(RUNTIME_INFO(dev_priv)->rawclk_freq);
+	else
+		clock = KHz(dev_priv->display.cdclk.hw.cdclk);
+
+	return DIV_ROUND_CLOSEST(clock, pwm_freq_hz * 128);
+}
+
+/*
+ * VLV: This value represents the period of the PWM stream in display core
+ * clocks ([DevCTG] 200MHz HRAW clocks) multiplied by 128 or 25MHz S0IX clocks
+ * multiplied by 16. CHV uses a 19.2MHz S0IX clock.
+ */
+static u32 vlv_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	int mul, clock;
+
+	if ((intel_de_read(dev_priv, CBR1_VLV) & CBR_PWM_CLOCK_MUX_SELECT) == 0) {
+		if (IS_CHERRYVIEW(dev_priv))
+			clock = KHz(19200);
+		else
+			clock = MHz(25);
+		mul = 16;
+	} else {
+		clock = KHz(RUNTIME_INFO(dev_priv)->rawclk_freq);
+		mul = 128;
+	}
+
+	return DIV_ROUND_CLOSEST(clock, pwm_freq_hz * mul);
+}
+
+static u16 get_vbt_pwm_freq(struct intel_connector *connector)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	u16 pwm_freq_hz = connector->panel.vbt.backlight.pwm_freq_hz;
+
+	if (pwm_freq_hz) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "VBT defined backlight frequency %u Hz\n",
+			    pwm_freq_hz);
+	} else {
+		pwm_freq_hz = 200;
+		drm_dbg_kms(&dev_priv->drm,
+			    "default backlight frequency %u Hz\n",
+			    pwm_freq_hz);
+	}
+
+	return pwm_freq_hz;
+}
+
+static u32 get_backlight_max_vbt(struct intel_connector *connector)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+	u16 pwm_freq_hz = get_vbt_pwm_freq(connector);
+	u32 pwm;
+
+	if (!panel->backlight.pwm_funcs->hz_to_pwm) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "backlight frequency conversion not supported\n");
+		return 0;
+	}
+
+	pwm = panel->backlight.pwm_funcs->hz_to_pwm(connector, pwm_freq_hz);
+	if (!pwm) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "backlight frequency conversion failed\n");
+		return 0;
+	}
+
+	return pwm;
+}
+
+/*
+ * Note: The setup hooks can't assume pipe is set!
+ */
+static u32 get_backlight_min_vbt(struct intel_connector *connector)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+	int min;
+
+	drm_WARN_ON(&dev_priv->drm, panel->backlight.pwm_level_max == 0);
+
+	/*
+	 * XXX: If the vbt value is 255, it makes min equal to max, which leads
+	 * to problems. There are such machines out there. Either our
+	 * interpretation is wrong or the vbt has bogus data. Or both. Safeguard
+	 * against this by letting the minimum be at most (arbitrarily chosen)
+	 * 25% of the max.
+	 */
+	min = clamp_t(int, connector->panel.vbt.backlight.min_brightness, 0, 64);
+	if (min != connector->panel.vbt.backlight.min_brightness) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "clamping VBT min backlight %d/255 to %d/255\n",
+			    connector->panel.vbt.backlight.min_brightness, min);
+	}
+
+	/* vbt value is a coefficient in range [0..255] */
+	return scale(min, 0, 255, 0, panel->backlight.pwm_level_max);
+}
+
+static int lpt_setup_backlight(struct intel_connector *connector, enum pipe unused)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+	u32 cpu_ctl2, pch_ctl1, pch_ctl2, val;
+	bool alt, cpu_mode;
+
+	if (HAS_PCH_LPT(dev_priv))
+		alt = intel_de_read(dev_priv, SOUTH_CHICKEN2) & LPT_PWM_GRANULARITY;
+	else
+		alt = intel_de_read(dev_priv, SOUTH_CHICKEN1) & SPT_PWM_GRANULARITY;
+	panel->backlight.alternate_pwm_increment = alt;
+
+	pch_ctl1 = intel_de_read(dev_priv, BLC_PWM_PCH_CTL1);
+	panel->backlight.active_low_pwm = pch_ctl1 & BLM_PCH_POLARITY;
+
+	pch_ctl2 = intel_de_read(dev_priv, BLC_PWM_PCH_CTL2);
+	panel->backlight.pwm_level_max = pch_ctl2 >> 16;
+
+	cpu_ctl2 = intel_de_read(dev_priv, BLC_PWM_CPU_CTL2);
+
+	if (!panel->backlight.pwm_level_max)
+		panel->backlight.pwm_level_max = get_backlight_max_vbt(connector);
+
+	if (!panel->backlight.pwm_level_max)
+		return -ENODEV;
+
+	panel->backlight.pwm_level_min = get_backlight_min_vbt(connector);
+
+	panel->backlight.pwm_enabled = pch_ctl1 & BLM_PCH_PWM_ENABLE;
+
+	cpu_mode = panel->backlight.pwm_enabled && HAS_PCH_LPT(dev_priv) &&
+		   !(pch_ctl1 & BLM_PCH_OVERRIDE_ENABLE) &&
+		   (cpu_ctl2 & BLM_PWM_ENABLE);
+
+	if (cpu_mode) {
+		val = pch_get_backlight(connector, unused);
+
+		drm_dbg_kms(&dev_priv->drm,
+			    "CPU backlight register was enabled, switching to PCH override\n");
+
+		/* Write converted CPU PWM value to PCH override register */
+		lpt_set_backlight(connector->base.state, val);
+		intel_de_write(dev_priv, BLC_PWM_PCH_CTL1,
+			       pch_ctl1 | BLM_PCH_OVERRIDE_ENABLE);
+
+		intel_de_write(dev_priv, BLC_PWM_CPU_CTL2,
+			       cpu_ctl2 & ~BLM_PWM_ENABLE);
+	}
+
+	return 0;
+}
+
+static int pch_setup_backlight(struct intel_connector *connector, enum pipe unused)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+	u32 cpu_ctl2, pch_ctl1, pch_ctl2;
+
+	pch_ctl1 = intel_de_read(dev_priv, BLC_PWM_PCH_CTL1);
+	panel->backlight.active_low_pwm = pch_ctl1 & BLM_PCH_POLARITY;
+
+	pch_ctl2 = intel_de_read(dev_priv, BLC_PWM_PCH_CTL2);
+	panel->backlight.pwm_level_max = pch_ctl2 >> 16;
+
+	if (!panel->backlight.pwm_level_max)
+		panel->backlight.pwm_level_max = get_backlight_max_vbt(connector);
+
+	if (!panel->backlight.pwm_level_max)
+		return -ENODEV;
+
+	panel->backlight.pwm_level_min = get_backlight_min_vbt(connector);
+
+	cpu_ctl2 = intel_de_read(dev_priv, BLC_PWM_CPU_CTL2);
+	panel->backlight.pwm_enabled = (cpu_ctl2 & BLM_PWM_ENABLE) &&
+		(pch_ctl1 & BLM_PCH_PWM_ENABLE);
+
+	return 0;
+}
+
+static int i9xx_setup_backlight(struct intel_connector *connector, enum pipe unused)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+	u32 ctl, val;
+
+	ctl = intel_de_read(dev_priv, BLC_PWM_CTL);
+
+	if (DISPLAY_VER(dev_priv) == 2 || IS_I915GM(dev_priv) || IS_I945GM(dev_priv))
+		panel->backlight.combination_mode = ctl & BLM_LEGACY_MODE;
+
+	if (IS_PINEVIEW(dev_priv))
+		panel->backlight.active_low_pwm = ctl & BLM_POLARITY_PNV;
+
+	panel->backlight.pwm_level_max = ctl >> 17;
+
+	if (!panel->backlight.pwm_level_max) {
+		panel->backlight.pwm_level_max = get_backlight_max_vbt(connector);
+		panel->backlight.pwm_level_max >>= 1;
+	}
+
+	if (!panel->backlight.pwm_level_max)
+		return -ENODEV;
+
+	if (panel->backlight.combination_mode)
+		panel->backlight.pwm_level_max *= 0xff;
+
+	panel->backlight.pwm_level_min = get_backlight_min_vbt(connector);
+
+	val = i9xx_get_backlight(connector, unused);
+	val = intel_backlight_invert_pwm_level(connector, val);
+	val = clamp(val, panel->backlight.pwm_level_min, panel->backlight.pwm_level_max);
+
+	panel->backlight.pwm_enabled = val != 0;
+
+	return 0;
+}
+
+static int i965_setup_backlight(struct intel_connector *connector, enum pipe unused)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+	u32 ctl, ctl2;
+
+	ctl2 = intel_de_read(dev_priv, BLC_PWM_CTL2);
+	panel->backlight.combination_mode = ctl2 & BLM_COMBINATION_MODE;
+	panel->backlight.active_low_pwm = ctl2 & BLM_POLARITY_I965;
+
+	ctl = intel_de_read(dev_priv, BLC_PWM_CTL);
+	panel->backlight.pwm_level_max = ctl >> 16;
+
+	if (!panel->backlight.pwm_level_max)
+		panel->backlight.pwm_level_max = get_backlight_max_vbt(connector);
+
+	if (!panel->backlight.pwm_level_max)
+		return -ENODEV;
+
+	if (panel->backlight.combination_mode)
+		panel->backlight.pwm_level_max *= 0xff;
+
+	panel->backlight.pwm_level_min = get_backlight_min_vbt(connector);
+
+	panel->backlight.pwm_enabled = ctl2 & BLM_PWM_ENABLE;
+
+	return 0;
+}
+
+static int vlv_setup_backlight(struct intel_connector *connector, enum pipe pipe)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+	u32 ctl, ctl2;
+
+	if (drm_WARN_ON(&dev_priv->drm, pipe != PIPE_A && pipe != PIPE_B))
+		return -ENODEV;
+
+	ctl2 = intel_de_read(dev_priv, VLV_BLC_PWM_CTL2(pipe));
+	panel->backlight.active_low_pwm = ctl2 & BLM_POLARITY_I965;
+
+	ctl = intel_de_read(dev_priv, VLV_BLC_PWM_CTL(pipe));
+	panel->backlight.pwm_level_max = ctl >> 16;
+
+	if (!panel->backlight.pwm_level_max)
+		panel->backlight.pwm_level_max = get_backlight_max_vbt(connector);
+
+	if (!panel->backlight.pwm_level_max)
+		return -ENODEV;
+
+	panel->backlight.pwm_level_min = get_backlight_min_vbt(connector);
+
+	panel->backlight.pwm_enabled = ctl2 & BLM_PWM_ENABLE;
+
+	return 0;
+}
+
+static int
+bxt_setup_backlight(struct intel_connector *connector, enum pipe unused)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+	u32 pwm_ctl, val;
+
+	panel->backlight.controller = connector->panel.vbt.backlight.controller;
+
+	pwm_ctl = intel_de_read(dev_priv,
+				BXT_BLC_PWM_CTL(panel->backlight.controller));
+
+	/* Controller 1 uses the utility pin. */
+	if (panel->backlight.controller == 1) {
+		val = intel_de_read(dev_priv, UTIL_PIN_CTL);
+		panel->backlight.util_pin_active_low =
+					val & UTIL_PIN_POLARITY;
+	}
+
+	panel->backlight.active_low_pwm = pwm_ctl & BXT_BLC_PWM_POLARITY;
+	panel->backlight.pwm_level_max =
+		intel_de_read(dev_priv, BXT_BLC_PWM_FREQ(panel->backlight.controller));
+
+	if (!panel->backlight.pwm_level_max)
+		panel->backlight.pwm_level_max = get_backlight_max_vbt(connector);
+
+	if (!panel->backlight.pwm_level_max)
+		return -ENODEV;
+
+	panel->backlight.pwm_level_min = get_backlight_min_vbt(connector);
+
+	panel->backlight.pwm_enabled = pwm_ctl & BXT_BLC_PWM_ENABLE;
+
+	return 0;
+}
+
+static int
+cnp_setup_backlight(struct intel_connector *connector, enum pipe unused)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+	u32 pwm_ctl;
+
+	/*
+	 * CNP has the BXT implementation of backlight, but with only one
+	 * controller. TODO: ICP has multiple controllers but we only use
+	 * controller 0 for now.
+	 */
+	panel->backlight.controller = 0;
+
+	pwm_ctl = intel_de_read(dev_priv,
+				BXT_BLC_PWM_CTL(panel->backlight.controller));
+
+	panel->backlight.active_low_pwm = pwm_ctl & BXT_BLC_PWM_POLARITY;
+	panel->backlight.pwm_level_max =
+		intel_de_read(dev_priv, BXT_BLC_PWM_FREQ(panel->backlight.controller));
+
+	if (!panel->backlight.pwm_level_max)
+		panel->backlight.pwm_level_max = get_backlight_max_vbt(connector);
+
+	if (!panel->backlight.pwm_level_max)
+		return -ENODEV;
+
+	panel->backlight.pwm_level_min = get_backlight_min_vbt(connector);
+
+	panel->backlight.pwm_enabled = pwm_ctl & BXT_BLC_PWM_ENABLE;
+
+	return 0;
+}
+
+static int ext_pwm_setup_backlight(struct intel_connector *connector,
+				   enum pipe pipe)
+{
+	struct drm_device *dev = connector->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_panel *panel = &connector->panel;
+	const char *desc;
+	u32 level;
+
+	/* Get the right PWM chip for DSI backlight according to VBT */
+	if (connector->panel.vbt.dsi.config->pwm_blc == PPS_BLC_PMIC) {
+		panel->backlight.pwm = pwm_get(dev->dev, "pwm_pmic_backlight");
+		desc = "PMIC";
+	} else {
+		panel->backlight.pwm = pwm_get(dev->dev, "pwm_soc_backlight");
+		desc = "SoC";
+	}
+
+	if (IS_ERR(panel->backlight.pwm)) {
+		drm_err(&dev_priv->drm, "Failed to get the %s PWM chip\n",
+			desc);
+		panel->backlight.pwm = NULL;
+		return -ENODEV;
+	}
+
+	panel->backlight.pwm_level_max = 100; /* 100% */
+	panel->backlight.pwm_level_min = get_backlight_min_vbt(connector);
+
+	if (pwm_is_enabled(panel->backlight.pwm)) {
+		/* PWM is already enabled, use existing settings */
+		pwm_get_state(panel->backlight.pwm, &panel->backlight.pwm_state);
+
+		level = pwm_get_relative_duty_cycle(&panel->backlight.pwm_state,
+						    100);
+		level = intel_backlight_invert_pwm_level(connector, level);
+		panel->backlight.pwm_enabled = true;
+
+		drm_dbg_kms(&dev_priv->drm, "PWM already enabled at freq %ld, VBT freq %d, level %d\n",
+			    NSEC_PER_SEC / (unsigned long)panel->backlight.pwm_state.period,
+			    get_vbt_pwm_freq(connector), level);
+	} else {
+		/* Set period from VBT frequency, leave other settings at 0. */
+		panel->backlight.pwm_state.period =
+			NSEC_PER_SEC / get_vbt_pwm_freq(connector);
+	}
+
+	drm_info(&dev_priv->drm, "Using %s PWM for LCD backlight control\n",
+		 desc);
+	return 0;
+}
+
+static void intel_pwm_set_backlight(const struct drm_connector_state *conn_state, u32 level)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct intel_panel *panel = &connector->panel;
+
+	panel->backlight.pwm_funcs->set(conn_state,
+					intel_backlight_invert_pwm_level(connector, level));
+}
+
+static u32 intel_pwm_get_backlight(struct intel_connector *connector, enum pipe pipe)
+{
+	struct intel_panel *panel = &connector->panel;
+
+	return intel_backlight_invert_pwm_level(connector,
+					    panel->backlight.pwm_funcs->get(connector, pipe));
+}
+
+static void intel_pwm_enable_backlight(const struct intel_crtc_state *crtc_state,
+				       const struct drm_connector_state *conn_state, u32 level)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct intel_panel *panel = &connector->panel;
+
+	panel->backlight.pwm_funcs->enable(crtc_state, conn_state,
+					   intel_backlight_invert_pwm_level(connector, level));
+}
+
+static void intel_pwm_disable_backlight(const struct drm_connector_state *conn_state, u32 level)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct intel_panel *panel = &connector->panel;
+
+	panel->backlight.pwm_funcs->disable(conn_state,
+					    intel_backlight_invert_pwm_level(connector, level));
+}
+
+static int intel_pwm_setup_backlight(struct intel_connector *connector, enum pipe pipe)
+{
+	struct intel_panel *panel = &connector->panel;
+	int ret = panel->backlight.pwm_funcs->setup(connector, pipe);
+
+	if (ret < 0)
+		return ret;
+
+	panel->backlight.min = panel->backlight.pwm_level_min;
+	panel->backlight.max = panel->backlight.pwm_level_max;
+	panel->backlight.level = intel_pwm_get_backlight(connector, pipe);
+	panel->backlight.enabled = panel->backlight.pwm_enabled;
+
+	return 0;
+}
+
+void intel_backlight_update(struct intel_atomic_state *state,
+			    struct intel_encoder *encoder,
+			    const struct intel_crtc_state *crtc_state,
+			    const struct drm_connector_state *conn_state)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+
+	if (!panel->backlight.present)
+		return;
+
+	mutex_lock(&dev_priv->display.backlight.lock);
+	if (!panel->backlight.enabled)
+		__intel_backlight_enable(crtc_state, conn_state);
+
+	mutex_unlock(&dev_priv->display.backlight.lock);
+}
+
+int intel_backlight_setup(struct intel_connector *connector, enum pipe pipe)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+	int ret;
+
+	if (!connector->panel.vbt.backlight.present) {
+		if (intel_has_quirk(dev_priv, QUIRK_BACKLIGHT_PRESENT)) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "no backlight present per VBT, but present per quirk\n");
+		} else {
+			drm_dbg_kms(&dev_priv->drm,
+				    "no backlight present per VBT\n");
+			return 0;
+		}
+	}
+
+	/* ensure intel_panel has been initialized first */
+	if (drm_WARN_ON(&dev_priv->drm, !panel->backlight.funcs))
+		return -ENODEV;
+
+	/* set level and max in panel struct */
+	mutex_lock(&dev_priv->display.backlight.lock);
+	ret = panel->backlight.funcs->setup(connector, pipe);
+	mutex_unlock(&dev_priv->display.backlight.lock);
+
+	if (ret) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "failed to setup backlight for connector %s\n",
+			    connector->base.name);
+		return ret;
+	}
+
+	panel->backlight.present = true;
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "Connector %s backlight initialized, %s, brightness %u/%u\n",
+		    connector->base.name,
+		    str_enabled_disabled(panel->backlight.enabled),
+		    panel->backlight.level, panel->backlight.max);
+
+	return 0;
+}
+
+void intel_backlight_destroy(struct intel_panel *panel)
+{
+	/* dispose of the pwm */
+	if (panel->backlight.pwm)
+		pwm_put(panel->backlight.pwm);
+
+	panel->backlight.present = false;
+}
+
+static const struct intel_panel_bl_funcs bxt_pwm_funcs = {
+	.setup = bxt_setup_backlight,
+	.enable = bxt_enable_backlight,
+	.disable = bxt_disable_backlight,
+	.set = bxt_set_backlight,
+	.get = bxt_get_backlight,
+	.hz_to_pwm = bxt_hz_to_pwm,
+};
+
+static const struct intel_panel_bl_funcs cnp_pwm_funcs = {
+	.setup = cnp_setup_backlight,
+	.enable = cnp_enable_backlight,
+	.disable = cnp_disable_backlight,
+	.set = bxt_set_backlight,
+	.get = bxt_get_backlight,
+	.hz_to_pwm = cnp_hz_to_pwm,
+};
+
+static const struct intel_panel_bl_funcs lpt_pwm_funcs = {
+	.setup = lpt_setup_backlight,
+	.enable = lpt_enable_backlight,
+	.disable = lpt_disable_backlight,
+	.set = lpt_set_backlight,
+	.get = lpt_get_backlight,
+	.hz_to_pwm = lpt_hz_to_pwm,
+};
+
+static const struct intel_panel_bl_funcs spt_pwm_funcs = {
+	.setup = lpt_setup_backlight,
+	.enable = lpt_enable_backlight,
+	.disable = lpt_disable_backlight,
+	.set = lpt_set_backlight,
+	.get = lpt_get_backlight,
+	.hz_to_pwm = spt_hz_to_pwm,
+};
+
+static const struct intel_panel_bl_funcs pch_pwm_funcs = {
+	.setup = pch_setup_backlight,
+	.enable = pch_enable_backlight,
+	.disable = pch_disable_backlight,
+	.set = pch_set_backlight,
+	.get = pch_get_backlight,
+	.hz_to_pwm = pch_hz_to_pwm,
+};
+
+static const struct intel_panel_bl_funcs ext_pwm_funcs = {
+	.setup = ext_pwm_setup_backlight,
+	.enable = ext_pwm_enable_backlight,
+	.disable = ext_pwm_disable_backlight,
+	.set = ext_pwm_set_backlight,
+	.get = ext_pwm_get_backlight,
+};
+
+static const struct intel_panel_bl_funcs vlv_pwm_funcs = {
+	.setup = vlv_setup_backlight,
+	.enable = vlv_enable_backlight,
+	.disable = vlv_disable_backlight,
+	.set = vlv_set_backlight,
+	.get = vlv_get_backlight,
+	.hz_to_pwm = vlv_hz_to_pwm,
+};
+
+static const struct intel_panel_bl_funcs i965_pwm_funcs = {
+	.setup = i965_setup_backlight,
+	.enable = i965_enable_backlight,
+	.disable = i965_disable_backlight,
+	.set = i9xx_set_backlight,
+	.get = i9xx_get_backlight,
+	.hz_to_pwm = i965_hz_to_pwm,
+};
+
+static const struct intel_panel_bl_funcs i9xx_pwm_funcs = {
+	.setup = i9xx_setup_backlight,
+	.enable = i9xx_enable_backlight,
+	.disable = i9xx_disable_backlight,
+	.set = i9xx_set_backlight,
+	.get = i9xx_get_backlight,
+	.hz_to_pwm = i9xx_hz_to_pwm,
+};
+
+static const struct intel_panel_bl_funcs pwm_bl_funcs = {
+	.setup = intel_pwm_setup_backlight,
+	.enable = intel_pwm_enable_backlight,
+	.disable = intel_pwm_disable_backlight,
+	.set = intel_pwm_set_backlight,
+	.get = intel_pwm_get_backlight,
+};
+
+/* Set up chip specific backlight functions */
+void intel_backlight_init_funcs(struct intel_panel *panel)
+{
+	struct intel_connector *connector =
+		container_of(panel, struct intel_connector, panel);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+
+	if (connector->base.connector_type == DRM_MODE_CONNECTOR_DSI &&
+	    intel_dsi_dcs_init_backlight_funcs(connector) == 0)
+		return;
+
+	if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) {
+		panel->backlight.pwm_funcs = &bxt_pwm_funcs;
+	} else if (INTEL_PCH_TYPE(dev_priv) >= PCH_CNP) {
+		panel->backlight.pwm_funcs = &cnp_pwm_funcs;
+	} else if (INTEL_PCH_TYPE(dev_priv) >= PCH_LPT) {
+		if (HAS_PCH_LPT(dev_priv))
+			panel->backlight.pwm_funcs = &lpt_pwm_funcs;
+		else
+			panel->backlight.pwm_funcs = &spt_pwm_funcs;
+	} else if (HAS_PCH_SPLIT(dev_priv)) {
+		panel->backlight.pwm_funcs = &pch_pwm_funcs;
+	} else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+		if (connector->base.connector_type == DRM_MODE_CONNECTOR_DSI) {
+			panel->backlight.pwm_funcs = &ext_pwm_funcs;
+		} else {
+			panel->backlight.pwm_funcs = &vlv_pwm_funcs;
+		}
+	} else if (DISPLAY_VER(dev_priv) == 4) {
+		panel->backlight.pwm_funcs = &i965_pwm_funcs;
+	} else {
+		panel->backlight.pwm_funcs = &i9xx_pwm_funcs;
+	}
+
+	if (connector->base.connector_type == DRM_MODE_CONNECTOR_eDP) {
+		if (intel_dp_aux_init_backlight_funcs(connector) == 0)
+			return;
+
+		if (!intel_has_quirk(dev_priv, QUIRK_NO_PPS_BACKLIGHT_POWER_HOOK))
+			connector->panel.backlight.power = intel_pps_backlight_power;
+	}
+
+	/* We're using a standard PWM backlight interface */
+	panel->backlight.funcs = &pwm_bl_funcs;
+}
diff --git a/drivers/gpu/drm/i915/display/intel_backlight.h b/drivers/gpu/drm/i915/display/intel_backlight.h
new file mode 100644
index 000000000..339643f63
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_backlight.h
@@ -0,0 +1,52 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#ifndef __INTEL_BACKLIGHT_H__
+#define __INTEL_BACKLIGHT_H__
+
+#include <linux/types.h>
+
+struct drm_connector_state;
+struct intel_atomic_state;
+struct intel_connector;
+struct intel_crtc_state;
+struct intel_encoder;
+struct intel_panel;
+enum pipe;
+
+void intel_backlight_init_funcs(struct intel_panel *panel);
+int intel_backlight_setup(struct intel_connector *connector, enum pipe pipe);
+void intel_backlight_destroy(struct intel_panel *panel);
+
+void intel_backlight_enable(const struct intel_crtc_state *crtc_state,
+			    const struct drm_connector_state *conn_state);
+void intel_backlight_update(struct intel_atomic_state *state,
+			    struct intel_encoder *encoder,
+			    const struct intel_crtc_state *crtc_state,
+			    const struct drm_connector_state *conn_state);
+void intel_backlight_disable(const struct drm_connector_state *old_conn_state);
+
+void intel_backlight_set_acpi(const struct drm_connector_state *conn_state,
+			      u32 level, u32 max);
+void intel_backlight_set_pwm_level(const struct drm_connector_state *conn_state,
+				   u32 level);
+u32 intel_backlight_invert_pwm_level(struct intel_connector *connector, u32 level);
+u32 intel_backlight_level_to_pwm(struct intel_connector *connector, u32 level);
+u32 intel_backlight_level_from_pwm(struct intel_connector *connector, u32 val);
+
+#if IS_ENABLED(CONFIG_BACKLIGHT_CLASS_DEVICE)
+int intel_backlight_device_register(struct intel_connector *connector);
+void intel_backlight_device_unregister(struct intel_connector *connector);
+#else /* CONFIG_BACKLIGHT_CLASS_DEVICE */
+static inline int intel_backlight_device_register(struct intel_connector *connector)
+{
+	return 0;
+}
+static inline void intel_backlight_device_unregister(struct intel_connector *connector)
+{
+}
+#endif /* CONFIG_BACKLIGHT_CLASS_DEVICE */
+
+#endif /* __INTEL_BACKLIGHT_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_backlight_regs.h b/drivers/gpu/drm/i915/display/intel_backlight_regs.h
new file mode 100644
index 000000000..50c1210f6
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_backlight_regs.h
@@ -0,0 +1,124 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#ifndef __INTEL_BACKLIGHT_REGS_H__
+#define __INTEL_BACKLIGHT_REGS_H__
+
+#include "i915_reg_defs.h"
+
+#define _VLV_BLC_PWM_CTL2_A (DISPLAY_MMIO_BASE(dev_priv) + 0x61250)
+#define _VLV_BLC_PWM_CTL2_B (DISPLAY_MMIO_BASE(dev_priv) + 0x61350)
+#define VLV_BLC_PWM_CTL2(pipe) _MMIO_PIPE(pipe, _VLV_BLC_PWM_CTL2_A, \
+					 _VLV_BLC_PWM_CTL2_B)
+
+#define _VLV_BLC_PWM_CTL_A (DISPLAY_MMIO_BASE(dev_priv) + 0x61254)
+#define _VLV_BLC_PWM_CTL_B (DISPLAY_MMIO_BASE(dev_priv) + 0x61354)
+#define VLV_BLC_PWM_CTL(pipe) _MMIO_PIPE(pipe, _VLV_BLC_PWM_CTL_A, \
+					_VLV_BLC_PWM_CTL_B)
+
+#define _VLV_BLC_HIST_CTL_A (DISPLAY_MMIO_BASE(dev_priv) + 0x61260)
+#define _VLV_BLC_HIST_CTL_B (DISPLAY_MMIO_BASE(dev_priv) + 0x61360)
+#define VLV_BLC_HIST_CTL(pipe) _MMIO_PIPE(pipe, _VLV_BLC_HIST_CTL_A, \
+					 _VLV_BLC_HIST_CTL_B)
+
+/* Backlight control */
+#define BLC_PWM_CTL2	_MMIO(DISPLAY_MMIO_BASE(dev_priv) + 0x61250) /* 965+ only */
+#define   BLM_PWM_ENABLE		(1 << 31)
+#define   BLM_COMBINATION_MODE		(1 << 30) /* gen4 only */
+#define   BLM_PIPE_SELECT		(1 << 29)
+#define   BLM_PIPE_SELECT_IVB		(3 << 29)
+#define   BLM_PIPE_A			(0 << 29)
+#define   BLM_PIPE_B			(1 << 29)
+#define   BLM_PIPE_C			(2 << 29) /* ivb + */
+#define   BLM_TRANSCODER_A		BLM_PIPE_A /* hsw */
+#define   BLM_TRANSCODER_B		BLM_PIPE_B
+#define   BLM_TRANSCODER_C		BLM_PIPE_C
+#define   BLM_TRANSCODER_EDP		(3 << 29)
+#define   BLM_PIPE(pipe)		((pipe) << 29)
+#define   BLM_POLARITY_I965		(1 << 28) /* gen4 only */
+#define   BLM_PHASE_IN_INTERUPT_STATUS	(1 << 26)
+#define   BLM_PHASE_IN_ENABLE		(1 << 25)
+#define   BLM_PHASE_IN_INTERUPT_ENABL	(1 << 24)
+#define   BLM_PHASE_IN_TIME_BASE_SHIFT	(16)
+#define   BLM_PHASE_IN_TIME_BASE_MASK	(0xff << 16)
+#define   BLM_PHASE_IN_COUNT_SHIFT	(8)
+#define   BLM_PHASE_IN_COUNT_MASK	(0xff << 8)
+#define   BLM_PHASE_IN_INCR_SHIFT	(0)
+#define   BLM_PHASE_IN_INCR_MASK	(0xff << 0)
+#define BLC_PWM_CTL	_MMIO(DISPLAY_MMIO_BASE(dev_priv) + 0x61254)
+/*
+ * This is the most significant 15 bits of the number of backlight cycles in a
+ * complete cycle of the modulated backlight control.
+ *
+ * The actual value is this field multiplied by two.
+ */
+#define   BACKLIGHT_MODULATION_FREQ_SHIFT	(17)
+#define   BACKLIGHT_MODULATION_FREQ_MASK	(0x7fff << 17)
+#define   BLM_LEGACY_MODE			(1 << 16) /* gen2 only */
+/*
+ * This is the number of cycles out of the backlight modulation cycle for which
+ * the backlight is on.
+ *
+ * This field must be no greater than the number of cycles in the complete
+ * backlight modulation cycle.
+ */
+#define   BACKLIGHT_DUTY_CYCLE_SHIFT		(0)
+#define   BACKLIGHT_DUTY_CYCLE_MASK		(0xffff)
+#define   BACKLIGHT_DUTY_CYCLE_MASK_PNV		(0xfffe)
+#define   BLM_POLARITY_PNV			(1 << 0) /* pnv only */
+
+#define BLC_HIST_CTL	_MMIO(DISPLAY_MMIO_BASE(dev_priv) + 0x61260)
+#define  BLM_HISTOGRAM_ENABLE			(1 << 31)
+
+/* New registers for PCH-split platforms. Safe where new bits show up, the
+ * register layout machtes with gen4 BLC_PWM_CTL[12]. */
+#define BLC_PWM_CPU_CTL2	_MMIO(0x48250)
+#define BLC_PWM_CPU_CTL		_MMIO(0x48254)
+
+#define HSW_BLC_PWM2_CTL	_MMIO(0x48350)
+
+/* PCH CTL1 is totally different, all but the below bits are reserved. CTL2 is
+ * like the normal CTL from gen4 and earlier. Hooray for confusing naming. */
+#define BLC_PWM_PCH_CTL1	_MMIO(0xc8250)
+#define   BLM_PCH_PWM_ENABLE			(1 << 31)
+#define   BLM_PCH_OVERRIDE_ENABLE		(1 << 30)
+#define   BLM_PCH_POLARITY			(1 << 29)
+#define BLC_PWM_PCH_CTL2	_MMIO(0xc8254)
+
+/* BXT backlight register definition. */
+#define _BXT_BLC_PWM_CTL1			0xC8250
+#define   BXT_BLC_PWM_ENABLE			(1 << 31)
+#define   BXT_BLC_PWM_POLARITY			(1 << 29)
+#define _BXT_BLC_PWM_FREQ1			0xC8254
+#define _BXT_BLC_PWM_DUTY1			0xC8258
+
+#define _BXT_BLC_PWM_CTL2			0xC8350
+#define _BXT_BLC_PWM_FREQ2			0xC8354
+#define _BXT_BLC_PWM_DUTY2			0xC8358
+
+#define BXT_BLC_PWM_CTL(controller)    _MMIO_PIPE(controller,		\
+					_BXT_BLC_PWM_CTL1, _BXT_BLC_PWM_CTL2)
+#define BXT_BLC_PWM_FREQ(controller)   _MMIO_PIPE(controller, \
+					_BXT_BLC_PWM_FREQ1, _BXT_BLC_PWM_FREQ2)
+#define BXT_BLC_PWM_DUTY(controller)   _MMIO_PIPE(controller, \
+					_BXT_BLC_PWM_DUTY1, _BXT_BLC_PWM_DUTY2)
+
+/* Utility pin */
+#define UTIL_PIN_CTL			_MMIO(0x48400)
+#define   UTIL_PIN_ENABLE		(1 << 31)
+#define   UTIL_PIN_PIPE_MASK		(3 << 29)
+#define   UTIL_PIN_PIPE(x)		((x) << 29)
+#define   UTIL_PIN_MODE_MASK		(0xf << 24)
+#define   UTIL_PIN_MODE_DATA		(0 << 24)
+#define   UTIL_PIN_MODE_PWM		(1 << 24)
+#define   UTIL_PIN_MODE_VBLANK		(4 << 24)
+#define   UTIL_PIN_MODE_VSYNC		(5 << 24)
+#define   UTIL_PIN_MODE_EYE_LEVEL	(8 << 24)
+#define   UTIL_PIN_OUTPUT_DATA		(1 << 23)
+#define   UTIL_PIN_POLARITY		(1 << 22)
+#define   UTIL_PIN_DIRECTION_INPUT	(1 << 19)
+#define   UTIL_PIN_INPUT_DATA		(1 << 16)
+
+#endif /* __INTEL_BACKLIGHT_REGS_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c
new file mode 100644
index 000000000..a70b70617
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -0,0 +1,3790 @@
+/*
+ * Copyright © 2006 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Authors:
+ *    Eric Anholt <eric@anholt.net>
+ *
+ */
+
+#include <drm/drm_edid.h>
+#include <drm/display/drm_dp_helper.h>
+#include <drm/display/drm_dsc_helper.h>
+
+#include "display/intel_display.h"
+#include "display/intel_display_types.h"
+#include "display/intel_gmbus.h"
+
+#include "i915_drv.h"
+#include "i915_reg.h"
+
+#define _INTEL_BIOS_PRIVATE
+#include "intel_vbt_defs.h"
+
+/**
+ * DOC: Video BIOS Table (VBT)
+ *
+ * The Video BIOS Table, or VBT, provides platform and board specific
+ * configuration information to the driver that is not discoverable or available
+ * through other means. The configuration is mostly related to display
+ * hardware. The VBT is available via the ACPI OpRegion or, on older systems, in
+ * the PCI ROM.
+ *
+ * The VBT consists of a VBT Header (defined as &struct vbt_header), a BDB
+ * Header (&struct bdb_header), and a number of BIOS Data Blocks (BDB) that
+ * contain the actual configuration information. The VBT Header, and thus the
+ * VBT, begins with "$VBT" signature. The VBT Header contains the offset of the
+ * BDB Header. The data blocks are concatenated after the BDB Header. The data
+ * blocks have a 1-byte Block ID, 2-byte Block Size, and Block Size bytes of
+ * data. (Block 53, the MIPI Sequence Block is an exception.)
+ *
+ * The driver parses the VBT during load. The relevant information is stored in
+ * driver private data for ease of use, and the actual VBT is not read after
+ * that.
+ */
+
+/* Wrapper for VBT child device config */
+struct intel_bios_encoder_data {
+	struct drm_i915_private *i915;
+
+	struct child_device_config child;
+	struct dsc_compression_parameters_entry *dsc;
+	struct list_head node;
+};
+
+#define	SLAVE_ADDR1	0x70
+#define	SLAVE_ADDR2	0x72
+
+/* Get BDB block size given a pointer to Block ID. */
+static u32 _get_blocksize(const u8 *block_base)
+{
+	/* The MIPI Sequence Block v3+ has a separate size field. */
+	if (*block_base == BDB_MIPI_SEQUENCE && *(block_base + 3) >= 3)
+		return *((const u32 *)(block_base + 4));
+	else
+		return *((const u16 *)(block_base + 1));
+}
+
+/* Get BDB block size give a pointer to data after Block ID and Block Size. */
+static u32 get_blocksize(const void *block_data)
+{
+	return _get_blocksize(block_data - 3);
+}
+
+static const void *
+find_raw_section(const void *_bdb, enum bdb_block_id section_id)
+{
+	const struct bdb_header *bdb = _bdb;
+	const u8 *base = _bdb;
+	int index = 0;
+	u32 total, current_size;
+	enum bdb_block_id current_id;
+
+	/* skip to first section */
+	index += bdb->header_size;
+	total = bdb->bdb_size;
+
+	/* walk the sections looking for section_id */
+	while (index + 3 < total) {
+		current_id = *(base + index);
+		current_size = _get_blocksize(base + index);
+		index += 3;
+
+		if (index + current_size > total)
+			return NULL;
+
+		if (current_id == section_id)
+			return base + index;
+
+		index += current_size;
+	}
+
+	return NULL;
+}
+
+/*
+ * Offset from the start of BDB to the start of the
+ * block data (just past the block header).
+ */
+static u32 raw_block_offset(const void *bdb, enum bdb_block_id section_id)
+{
+	const void *block;
+
+	block = find_raw_section(bdb, section_id);
+	if (!block)
+		return 0;
+
+	return block - bdb;
+}
+
+struct bdb_block_entry {
+	struct list_head node;
+	enum bdb_block_id section_id;
+	u8 data[];
+};
+
+static const void *
+find_section(struct drm_i915_private *i915,
+	     enum bdb_block_id section_id)
+{
+	struct bdb_block_entry *entry;
+
+	list_for_each_entry(entry, &i915->display.vbt.bdb_blocks, node) {
+		if (entry->section_id == section_id)
+			return entry->data + 3;
+	}
+
+	return NULL;
+}
+
+static const struct {
+	enum bdb_block_id section_id;
+	size_t min_size;
+} bdb_blocks[] = {
+	{ .section_id = BDB_GENERAL_FEATURES,
+	  .min_size = sizeof(struct bdb_general_features), },
+	{ .section_id = BDB_GENERAL_DEFINITIONS,
+	  .min_size = sizeof(struct bdb_general_definitions), },
+	{ .section_id = BDB_PSR,
+	  .min_size = sizeof(struct bdb_psr), },
+	{ .section_id = BDB_DRIVER_FEATURES,
+	  .min_size = sizeof(struct bdb_driver_features), },
+	{ .section_id = BDB_SDVO_LVDS_OPTIONS,
+	  .min_size = sizeof(struct bdb_sdvo_lvds_options), },
+	{ .section_id = BDB_SDVO_PANEL_DTDS,
+	  .min_size = sizeof(struct bdb_sdvo_panel_dtds), },
+	{ .section_id = BDB_EDP,
+	  .min_size = sizeof(struct bdb_edp), },
+	{ .section_id = BDB_LVDS_OPTIONS,
+	  .min_size = sizeof(struct bdb_lvds_options), },
+	/*
+	 * BDB_LVDS_LFP_DATA depends on BDB_LVDS_LFP_DATA_PTRS,
+	 * so keep the two ordered.
+	 */
+	{ .section_id = BDB_LVDS_LFP_DATA_PTRS,
+	  .min_size = sizeof(struct bdb_lvds_lfp_data_ptrs), },
+	{ .section_id = BDB_LVDS_LFP_DATA,
+	  .min_size = 0, /* special case */ },
+	{ .section_id = BDB_LVDS_BACKLIGHT,
+	  .min_size = sizeof(struct bdb_lfp_backlight_data), },
+	{ .section_id = BDB_LFP_POWER,
+	  .min_size = sizeof(struct bdb_lfp_power), },
+	{ .section_id = BDB_MIPI_CONFIG,
+	  .min_size = sizeof(struct bdb_mipi_config), },
+	{ .section_id = BDB_MIPI_SEQUENCE,
+	  .min_size = sizeof(struct bdb_mipi_sequence) },
+	{ .section_id = BDB_COMPRESSION_PARAMETERS,
+	  .min_size = sizeof(struct bdb_compression_parameters), },
+	{ .section_id = BDB_GENERIC_DTD,
+	  .min_size = sizeof(struct bdb_generic_dtd), },
+};
+
+static size_t lfp_data_min_size(struct drm_i915_private *i915)
+{
+	const struct bdb_lvds_lfp_data_ptrs *ptrs;
+	size_t size;
+
+	ptrs = find_section(i915, BDB_LVDS_LFP_DATA_PTRS);
+	if (!ptrs)
+		return 0;
+
+	size = sizeof(struct bdb_lvds_lfp_data);
+	if (ptrs->panel_name.table_size)
+		size = max(size, ptrs->panel_name.offset +
+			   sizeof(struct bdb_lvds_lfp_data_tail));
+
+	return size;
+}
+
+static bool validate_lfp_data_ptrs(const void *bdb,
+				   const struct bdb_lvds_lfp_data_ptrs *ptrs)
+{
+	int fp_timing_size, dvo_timing_size, panel_pnp_id_size, panel_name_size;
+	int data_block_size, lfp_data_size;
+	const void *data_block;
+	int i;
+
+	data_block = find_raw_section(bdb, BDB_LVDS_LFP_DATA);
+	if (!data_block)
+		return false;
+
+	data_block_size = get_blocksize(data_block);
+	if (data_block_size == 0)
+		return false;
+
+	/* always 3 indicating the presence of fp_timing+dvo_timing+panel_pnp_id */
+	if (ptrs->lvds_entries != 3)
+		return false;
+
+	fp_timing_size = ptrs->ptr[0].fp_timing.table_size;
+	dvo_timing_size = ptrs->ptr[0].dvo_timing.table_size;
+	panel_pnp_id_size = ptrs->ptr[0].panel_pnp_id.table_size;
+	panel_name_size = ptrs->panel_name.table_size;
+
+	/* fp_timing has variable size */
+	if (fp_timing_size < 32 ||
+	    dvo_timing_size != sizeof(struct lvds_dvo_timing) ||
+	    panel_pnp_id_size != sizeof(struct lvds_pnp_id))
+		return false;
+
+	/* panel_name is not present in old VBTs */
+	if (panel_name_size != 0 &&
+	    panel_name_size != sizeof(struct lvds_lfp_panel_name))
+		return false;
+
+	lfp_data_size = ptrs->ptr[1].fp_timing.offset - ptrs->ptr[0].fp_timing.offset;
+	if (16 * lfp_data_size > data_block_size)
+		return false;
+
+	/* make sure the table entries have uniform size */
+	for (i = 1; i < 16; i++) {
+		if (ptrs->ptr[i].fp_timing.table_size != fp_timing_size ||
+		    ptrs->ptr[i].dvo_timing.table_size != dvo_timing_size ||
+		    ptrs->ptr[i].panel_pnp_id.table_size != panel_pnp_id_size)
+			return false;
+
+		if (ptrs->ptr[i].fp_timing.offset - ptrs->ptr[i-1].fp_timing.offset != lfp_data_size ||
+		    ptrs->ptr[i].dvo_timing.offset - ptrs->ptr[i-1].dvo_timing.offset != lfp_data_size ||
+		    ptrs->ptr[i].panel_pnp_id.offset - ptrs->ptr[i-1].panel_pnp_id.offset != lfp_data_size)
+			return false;
+	}
+
+	/*
+	 * Except for vlv/chv machines all real VBTs seem to have 6
+	 * unaccounted bytes in the fp_timing table. And it doesn't
+	 * appear to be a really intentional hole as the fp_timing
+	 * 0xffff terminator is always within those 6 missing bytes.
+	 */
+	if (fp_timing_size + 6 + dvo_timing_size + panel_pnp_id_size == lfp_data_size)
+		fp_timing_size += 6;
+
+	if (fp_timing_size + dvo_timing_size + panel_pnp_id_size != lfp_data_size)
+		return false;
+
+	if (ptrs->ptr[0].fp_timing.offset + fp_timing_size != ptrs->ptr[0].dvo_timing.offset ||
+	    ptrs->ptr[0].dvo_timing.offset + dvo_timing_size != ptrs->ptr[0].panel_pnp_id.offset ||
+	    ptrs->ptr[0].panel_pnp_id.offset + panel_pnp_id_size != lfp_data_size)
+		return false;
+
+	/* make sure the tables fit inside the data block */
+	for (i = 0; i < 16; i++) {
+		if (ptrs->ptr[i].fp_timing.offset + fp_timing_size > data_block_size ||
+		    ptrs->ptr[i].dvo_timing.offset + dvo_timing_size > data_block_size ||
+		    ptrs->ptr[i].panel_pnp_id.offset + panel_pnp_id_size > data_block_size)
+			return false;
+	}
+
+	if (ptrs->panel_name.offset + 16 * panel_name_size > data_block_size)
+		return false;
+
+	/* make sure fp_timing terminators are present at expected locations */
+	for (i = 0; i < 16; i++) {
+		const u16 *t = data_block + ptrs->ptr[i].fp_timing.offset +
+			fp_timing_size - 2;
+
+		if (*t != 0xffff)
+			return false;
+	}
+
+	return true;
+}
+
+/* make the data table offsets relative to the data block */
+static bool fixup_lfp_data_ptrs(const void *bdb, void *ptrs_block)
+{
+	struct bdb_lvds_lfp_data_ptrs *ptrs = ptrs_block;
+	u32 offset;
+	int i;
+
+	offset = raw_block_offset(bdb, BDB_LVDS_LFP_DATA);
+
+	for (i = 0; i < 16; i++) {
+		if (ptrs->ptr[i].fp_timing.offset < offset ||
+		    ptrs->ptr[i].dvo_timing.offset < offset ||
+		    ptrs->ptr[i].panel_pnp_id.offset < offset)
+			return false;
+
+		ptrs->ptr[i].fp_timing.offset -= offset;
+		ptrs->ptr[i].dvo_timing.offset -= offset;
+		ptrs->ptr[i].panel_pnp_id.offset -= offset;
+	}
+
+	if (ptrs->panel_name.table_size) {
+		if (ptrs->panel_name.offset < offset)
+			return false;
+
+		ptrs->panel_name.offset -= offset;
+	}
+
+	return validate_lfp_data_ptrs(bdb, ptrs);
+}
+
+static int make_lfp_data_ptr(struct lvds_lfp_data_ptr_table *table,
+			     int table_size, int total_size)
+{
+	if (total_size < table_size)
+		return total_size;
+
+	table->table_size = table_size;
+	table->offset = total_size - table_size;
+
+	return total_size - table_size;
+}
+
+static void next_lfp_data_ptr(struct lvds_lfp_data_ptr_table *next,
+			      const struct lvds_lfp_data_ptr_table *prev,
+			      int size)
+{
+	next->table_size = prev->table_size;
+	next->offset = prev->offset + size;
+}
+
+static void *generate_lfp_data_ptrs(struct drm_i915_private *i915,
+				    const void *bdb)
+{
+	int i, size, table_size, block_size, offset, fp_timing_size;
+	struct bdb_lvds_lfp_data_ptrs *ptrs;
+	const void *block;
+	void *ptrs_block;
+
+	/*
+	 * The hardcoded fp_timing_size is only valid for
+	 * modernish VBTs. All older VBTs definitely should
+	 * include block 41 and thus we don't need to
+	 * generate one.
+	 */
+	if (i915->display.vbt.version < 155)
+		return NULL;
+
+	fp_timing_size = 38;
+
+	block = find_raw_section(bdb, BDB_LVDS_LFP_DATA);
+	if (!block)
+		return NULL;
+
+	drm_dbg_kms(&i915->drm, "Generating LFP data table pointers\n");
+
+	block_size = get_blocksize(block);
+
+	size = fp_timing_size + sizeof(struct lvds_dvo_timing) +
+		sizeof(struct lvds_pnp_id);
+	if (size * 16 > block_size)
+		return NULL;
+
+	ptrs_block = kzalloc(sizeof(*ptrs) + 3, GFP_KERNEL);
+	if (!ptrs_block)
+		return NULL;
+
+	*(u8 *)(ptrs_block + 0) = BDB_LVDS_LFP_DATA_PTRS;
+	*(u16 *)(ptrs_block + 1) = sizeof(*ptrs);
+	ptrs = ptrs_block + 3;
+
+	table_size = sizeof(struct lvds_pnp_id);
+	size = make_lfp_data_ptr(&ptrs->ptr[0].panel_pnp_id, table_size, size);
+
+	table_size = sizeof(struct lvds_dvo_timing);
+	size = make_lfp_data_ptr(&ptrs->ptr[0].dvo_timing, table_size, size);
+
+	table_size = fp_timing_size;
+	size = make_lfp_data_ptr(&ptrs->ptr[0].fp_timing, table_size, size);
+
+	if (ptrs->ptr[0].fp_timing.table_size)
+		ptrs->lvds_entries++;
+	if (ptrs->ptr[0].dvo_timing.table_size)
+		ptrs->lvds_entries++;
+	if (ptrs->ptr[0].panel_pnp_id.table_size)
+		ptrs->lvds_entries++;
+
+	if (size != 0 || ptrs->lvds_entries != 3) {
+		kfree(ptrs_block);
+		return NULL;
+	}
+
+	size = fp_timing_size + sizeof(struct lvds_dvo_timing) +
+		sizeof(struct lvds_pnp_id);
+	for (i = 1; i < 16; i++) {
+		next_lfp_data_ptr(&ptrs->ptr[i].fp_timing, &ptrs->ptr[i-1].fp_timing, size);
+		next_lfp_data_ptr(&ptrs->ptr[i].dvo_timing, &ptrs->ptr[i-1].dvo_timing, size);
+		next_lfp_data_ptr(&ptrs->ptr[i].panel_pnp_id, &ptrs->ptr[i-1].panel_pnp_id, size);
+	}
+
+	table_size = sizeof(struct lvds_lfp_panel_name);
+
+	if (16 * (size + table_size) <= block_size) {
+		ptrs->panel_name.table_size = table_size;
+		ptrs->panel_name.offset = size * 16;
+	}
+
+	offset = block - bdb;
+
+	for (i = 0; i < 16; i++) {
+		ptrs->ptr[i].fp_timing.offset += offset;
+		ptrs->ptr[i].dvo_timing.offset += offset;
+		ptrs->ptr[i].panel_pnp_id.offset += offset;
+	}
+
+	if (ptrs->panel_name.table_size)
+		ptrs->panel_name.offset += offset;
+
+	return ptrs_block;
+}
+
+static void
+init_bdb_block(struct drm_i915_private *i915,
+	       const void *bdb, enum bdb_block_id section_id,
+	       size_t min_size)
+{
+	struct bdb_block_entry *entry;
+	void *temp_block = NULL;
+	const void *block;
+	size_t block_size;
+
+	block = find_raw_section(bdb, section_id);
+
+	/* Modern VBTs lack the LFP data table pointers block, make one up */
+	if (!block && section_id == BDB_LVDS_LFP_DATA_PTRS) {
+		temp_block = generate_lfp_data_ptrs(i915, bdb);
+		if (temp_block)
+			block = temp_block + 3;
+	}
+	if (!block)
+		return;
+
+	drm_WARN(&i915->drm, min_size == 0,
+		 "Block %d min_size is zero\n", section_id);
+
+	block_size = get_blocksize(block);
+
+	/*
+	 * Version number and new block size are considered
+	 * part of the header for MIPI sequenece block v3+.
+	 */
+	if (section_id == BDB_MIPI_SEQUENCE && *(const u8 *)block >= 3)
+		block_size += 5;
+
+	entry = kzalloc(struct_size(entry, data, max(min_size, block_size) + 3),
+			GFP_KERNEL);
+	if (!entry) {
+		kfree(temp_block);
+		return;
+	}
+
+	entry->section_id = section_id;
+	memcpy(entry->data, block - 3, block_size + 3);
+
+	kfree(temp_block);
+
+	drm_dbg_kms(&i915->drm, "Found BDB block %d (size %zu, min size %zu)\n",
+		    section_id, block_size, min_size);
+
+	if (section_id == BDB_LVDS_LFP_DATA_PTRS &&
+	    !fixup_lfp_data_ptrs(bdb, entry->data + 3)) {
+		drm_err(&i915->drm, "VBT has malformed LFP data table pointers\n");
+		kfree(entry);
+		return;
+	}
+
+	list_add_tail(&entry->node, &i915->display.vbt.bdb_blocks);
+}
+
+static void init_bdb_blocks(struct drm_i915_private *i915,
+			    const void *bdb)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(bdb_blocks); i++) {
+		enum bdb_block_id section_id = bdb_blocks[i].section_id;
+		size_t min_size = bdb_blocks[i].min_size;
+
+		if (section_id == BDB_LVDS_LFP_DATA)
+			min_size = lfp_data_min_size(i915);
+
+		init_bdb_block(i915, bdb, section_id, min_size);
+	}
+}
+
+static void
+fill_detail_timing_data(struct drm_display_mode *panel_fixed_mode,
+			const struct lvds_dvo_timing *dvo_timing)
+{
+	panel_fixed_mode->hdisplay = (dvo_timing->hactive_hi << 8) |
+		dvo_timing->hactive_lo;
+	panel_fixed_mode->hsync_start = panel_fixed_mode->hdisplay +
+		((dvo_timing->hsync_off_hi << 8) | dvo_timing->hsync_off_lo);
+	panel_fixed_mode->hsync_end = panel_fixed_mode->hsync_start +
+		((dvo_timing->hsync_pulse_width_hi << 8) |
+			dvo_timing->hsync_pulse_width_lo);
+	panel_fixed_mode->htotal = panel_fixed_mode->hdisplay +
+		((dvo_timing->hblank_hi << 8) | dvo_timing->hblank_lo);
+
+	panel_fixed_mode->vdisplay = (dvo_timing->vactive_hi << 8) |
+		dvo_timing->vactive_lo;
+	panel_fixed_mode->vsync_start = panel_fixed_mode->vdisplay +
+		((dvo_timing->vsync_off_hi << 4) | dvo_timing->vsync_off_lo);
+	panel_fixed_mode->vsync_end = panel_fixed_mode->vsync_start +
+		((dvo_timing->vsync_pulse_width_hi << 4) |
+			dvo_timing->vsync_pulse_width_lo);
+	panel_fixed_mode->vtotal = panel_fixed_mode->vdisplay +
+		((dvo_timing->vblank_hi << 8) | dvo_timing->vblank_lo);
+	panel_fixed_mode->clock = dvo_timing->clock * 10;
+	panel_fixed_mode->type = DRM_MODE_TYPE_PREFERRED;
+
+	if (dvo_timing->hsync_positive)
+		panel_fixed_mode->flags |= DRM_MODE_FLAG_PHSYNC;
+	else
+		panel_fixed_mode->flags |= DRM_MODE_FLAG_NHSYNC;
+
+	if (dvo_timing->vsync_positive)
+		panel_fixed_mode->flags |= DRM_MODE_FLAG_PVSYNC;
+	else
+		panel_fixed_mode->flags |= DRM_MODE_FLAG_NVSYNC;
+
+	panel_fixed_mode->width_mm = (dvo_timing->himage_hi << 8) |
+		dvo_timing->himage_lo;
+	panel_fixed_mode->height_mm = (dvo_timing->vimage_hi << 8) |
+		dvo_timing->vimage_lo;
+
+	/* Some VBTs have bogus h/vtotal values */
+	if (panel_fixed_mode->hsync_end > panel_fixed_mode->htotal)
+		panel_fixed_mode->htotal = panel_fixed_mode->hsync_end + 1;
+	if (panel_fixed_mode->vsync_end > panel_fixed_mode->vtotal)
+		panel_fixed_mode->vtotal = panel_fixed_mode->vsync_end + 1;
+
+	drm_mode_set_name(panel_fixed_mode);
+}
+
+static const struct lvds_dvo_timing *
+get_lvds_dvo_timing(const struct bdb_lvds_lfp_data *data,
+		    const struct bdb_lvds_lfp_data_ptrs *ptrs,
+		    int index)
+{
+	return (const void *)data + ptrs->ptr[index].dvo_timing.offset;
+}
+
+static const struct lvds_fp_timing *
+get_lvds_fp_timing(const struct bdb_lvds_lfp_data *data,
+		   const struct bdb_lvds_lfp_data_ptrs *ptrs,
+		   int index)
+{
+	return (const void *)data + ptrs->ptr[index].fp_timing.offset;
+}
+
+static const struct lvds_pnp_id *
+get_lvds_pnp_id(const struct bdb_lvds_lfp_data *data,
+		const struct bdb_lvds_lfp_data_ptrs *ptrs,
+		int index)
+{
+	return (const void *)data + ptrs->ptr[index].panel_pnp_id.offset;
+}
+
+static const struct bdb_lvds_lfp_data_tail *
+get_lfp_data_tail(const struct bdb_lvds_lfp_data *data,
+		  const struct bdb_lvds_lfp_data_ptrs *ptrs)
+{
+	if (ptrs->panel_name.table_size)
+		return (const void *)data + ptrs->panel_name.offset;
+	else
+		return NULL;
+}
+
+static void dump_pnp_id(struct drm_i915_private *i915,
+			const struct lvds_pnp_id *pnp_id,
+			const char *name)
+{
+	u16 mfg_name = be16_to_cpu((__force __be16)pnp_id->mfg_name);
+	char vend[4];
+
+	drm_dbg_kms(&i915->drm, "%s PNPID mfg: %s (0x%x), prod: %u, serial: %u, week: %d, year: %d\n",
+		    name, drm_edid_decode_mfg_id(mfg_name, vend),
+		    pnp_id->mfg_name, pnp_id->product_code, pnp_id->serial,
+		    pnp_id->mfg_week, pnp_id->mfg_year + 1990);
+}
+
+static int opregion_get_panel_type(struct drm_i915_private *i915,
+				   const struct intel_bios_encoder_data *devdata,
+				   const struct edid *edid, bool use_fallback)
+{
+	return intel_opregion_get_panel_type(i915);
+}
+
+static int vbt_get_panel_type(struct drm_i915_private *i915,
+			      const struct intel_bios_encoder_data *devdata,
+			      const struct edid *edid, bool use_fallback)
+{
+	const struct bdb_lvds_options *lvds_options;
+
+	lvds_options = find_section(i915, BDB_LVDS_OPTIONS);
+	if (!lvds_options)
+		return -1;
+
+	if (lvds_options->panel_type > 0xf &&
+	    lvds_options->panel_type != 0xff) {
+		drm_dbg_kms(&i915->drm, "Invalid VBT panel type 0x%x\n",
+			    lvds_options->panel_type);
+		return -1;
+	}
+
+	if (devdata && devdata->child.handle == DEVICE_HANDLE_LFP2)
+		return lvds_options->panel_type2;
+
+	drm_WARN_ON(&i915->drm, devdata && devdata->child.handle != DEVICE_HANDLE_LFP1);
+
+	return lvds_options->panel_type;
+}
+
+static int pnpid_get_panel_type(struct drm_i915_private *i915,
+				const struct intel_bios_encoder_data *devdata,
+				const struct edid *edid, bool use_fallback)
+{
+	const struct bdb_lvds_lfp_data *data;
+	const struct bdb_lvds_lfp_data_ptrs *ptrs;
+	const struct lvds_pnp_id *edid_id;
+	struct lvds_pnp_id edid_id_nodate;
+	int i, best = -1;
+
+	if (!edid)
+		return -1;
+
+	edid_id = (const void *)&edid->mfg_id[0];
+
+	edid_id_nodate = *edid_id;
+	edid_id_nodate.mfg_week = 0;
+	edid_id_nodate.mfg_year = 0;
+
+	dump_pnp_id(i915, edid_id, "EDID");
+
+	ptrs = find_section(i915, BDB_LVDS_LFP_DATA_PTRS);
+	if (!ptrs)
+		return -1;
+
+	data = find_section(i915, BDB_LVDS_LFP_DATA);
+	if (!data)
+		return -1;
+
+	for (i = 0; i < 16; i++) {
+		const struct lvds_pnp_id *vbt_id =
+			get_lvds_pnp_id(data, ptrs, i);
+
+		/* full match? */
+		if (!memcmp(vbt_id, edid_id, sizeof(*vbt_id)))
+			return i;
+
+		/*
+		 * Accept a match w/o date if no full match is found,
+		 * and the VBT entry does not specify a date.
+		 */
+		if (best < 0 &&
+		    !memcmp(vbt_id, &edid_id_nodate, sizeof(*vbt_id)))
+			best = i;
+	}
+
+	return best;
+}
+
+static int fallback_get_panel_type(struct drm_i915_private *i915,
+				   const struct intel_bios_encoder_data *devdata,
+				   const struct edid *edid, bool use_fallback)
+{
+	return use_fallback ? 0 : -1;
+}
+
+enum panel_type {
+	PANEL_TYPE_OPREGION,
+	PANEL_TYPE_VBT,
+	PANEL_TYPE_PNPID,
+	PANEL_TYPE_FALLBACK,
+};
+
+static int get_panel_type(struct drm_i915_private *i915,
+			  const struct intel_bios_encoder_data *devdata,
+			  const struct edid *edid, bool use_fallback)
+{
+	struct {
+		const char *name;
+		int (*get_panel_type)(struct drm_i915_private *i915,
+				      const struct intel_bios_encoder_data *devdata,
+				      const struct edid *edid, bool use_fallback);
+		int panel_type;
+	} panel_types[] = {
+		[PANEL_TYPE_OPREGION] = {
+			.name = "OpRegion",
+			.get_panel_type = opregion_get_panel_type,
+		},
+		[PANEL_TYPE_VBT] = {
+			.name = "VBT",
+			.get_panel_type = vbt_get_panel_type,
+		},
+		[PANEL_TYPE_PNPID] = {
+			.name = "PNPID",
+			.get_panel_type = pnpid_get_panel_type,
+		},
+		[PANEL_TYPE_FALLBACK] = {
+			.name = "fallback",
+			.get_panel_type = fallback_get_panel_type,
+		},
+	};
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(panel_types); i++) {
+		panel_types[i].panel_type = panel_types[i].get_panel_type(i915, devdata,
+									  edid, use_fallback);
+
+		drm_WARN_ON(&i915->drm, panel_types[i].panel_type > 0xf &&
+			    panel_types[i].panel_type != 0xff);
+
+		if (panel_types[i].panel_type >= 0)
+			drm_dbg_kms(&i915->drm, "Panel type (%s): %d\n",
+				    panel_types[i].name, panel_types[i].panel_type);
+	}
+
+	if (panel_types[PANEL_TYPE_OPREGION].panel_type >= 0)
+		i = PANEL_TYPE_OPREGION;
+	else if (panel_types[PANEL_TYPE_VBT].panel_type == 0xff &&
+		 panel_types[PANEL_TYPE_PNPID].panel_type >= 0)
+		i = PANEL_TYPE_PNPID;
+	else if (panel_types[PANEL_TYPE_VBT].panel_type != 0xff &&
+		 panel_types[PANEL_TYPE_VBT].panel_type >= 0)
+		i = PANEL_TYPE_VBT;
+	else
+		i = PANEL_TYPE_FALLBACK;
+
+	drm_dbg_kms(&i915->drm, "Selected panel type (%s): %d\n",
+		    panel_types[i].name, panel_types[i].panel_type);
+
+	return panel_types[i].panel_type;
+}
+
+static unsigned int panel_bits(unsigned int value, int panel_type, int num_bits)
+{
+	return (value >> (panel_type * num_bits)) & (BIT(num_bits) - 1);
+}
+
+static bool panel_bool(unsigned int value, int panel_type)
+{
+	return panel_bits(value, panel_type, 1);
+}
+
+/* Parse general panel options */
+static void
+parse_panel_options(struct drm_i915_private *i915,
+		    struct intel_panel *panel)
+{
+	const struct bdb_lvds_options *lvds_options;
+	int panel_type = panel->vbt.panel_type;
+	int drrs_mode;
+
+	lvds_options = find_section(i915, BDB_LVDS_OPTIONS);
+	if (!lvds_options)
+		return;
+
+	panel->vbt.lvds_dither = lvds_options->pixel_dither;
+
+	/*
+	 * Empirical evidence indicates the block size can be
+	 * either 4,14,16,24+ bytes. For older VBTs no clear
+	 * relationship between the block size vs. BDB version.
+	 */
+	if (get_blocksize(lvds_options) < 16)
+		return;
+
+	drrs_mode = panel_bits(lvds_options->dps_panel_type_bits,
+			       panel_type, 2);
+	/*
+	 * VBT has static DRRS = 0 and seamless DRRS = 2.
+	 * The below piece of code is required to adjust vbt.drrs_type
+	 * to match the enum drrs_support_type.
+	 */
+	switch (drrs_mode) {
+	case 0:
+		panel->vbt.drrs_type = DRRS_TYPE_STATIC;
+		drm_dbg_kms(&i915->drm, "DRRS supported mode is static\n");
+		break;
+	case 2:
+		panel->vbt.drrs_type = DRRS_TYPE_SEAMLESS;
+		drm_dbg_kms(&i915->drm,
+			    "DRRS supported mode is seamless\n");
+		break;
+	default:
+		panel->vbt.drrs_type = DRRS_TYPE_NONE;
+		drm_dbg_kms(&i915->drm,
+			    "DRRS not supported (VBT input)\n");
+		break;
+	}
+}
+
+static void
+parse_lfp_panel_dtd(struct drm_i915_private *i915,
+		    struct intel_panel *panel,
+		    const struct bdb_lvds_lfp_data *lvds_lfp_data,
+		    const struct bdb_lvds_lfp_data_ptrs *lvds_lfp_data_ptrs)
+{
+	const struct lvds_dvo_timing *panel_dvo_timing;
+	const struct lvds_fp_timing *fp_timing;
+	struct drm_display_mode *panel_fixed_mode;
+	int panel_type = panel->vbt.panel_type;
+
+	panel_dvo_timing = get_lvds_dvo_timing(lvds_lfp_data,
+					       lvds_lfp_data_ptrs,
+					       panel_type);
+
+	panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL);
+	if (!panel_fixed_mode)
+		return;
+
+	fill_detail_timing_data(panel_fixed_mode, panel_dvo_timing);
+
+	panel->vbt.lfp_lvds_vbt_mode = panel_fixed_mode;
+
+	drm_dbg_kms(&i915->drm,
+		    "Found panel mode in BIOS VBT legacy lfp table: " DRM_MODE_FMT "\n",
+		    DRM_MODE_ARG(panel_fixed_mode));
+
+	fp_timing = get_lvds_fp_timing(lvds_lfp_data,
+				       lvds_lfp_data_ptrs,
+				       panel_type);
+
+	/* check the resolution, just to be sure */
+	if (fp_timing->x_res == panel_fixed_mode->hdisplay &&
+	    fp_timing->y_res == panel_fixed_mode->vdisplay) {
+		panel->vbt.bios_lvds_val = fp_timing->lvds_reg_val;
+		drm_dbg_kms(&i915->drm,
+			    "VBT initial LVDS value %x\n",
+			    panel->vbt.bios_lvds_val);
+	}
+}
+
+static void
+parse_lfp_data(struct drm_i915_private *i915,
+	       struct intel_panel *panel)
+{
+	const struct bdb_lvds_lfp_data *data;
+	const struct bdb_lvds_lfp_data_tail *tail;
+	const struct bdb_lvds_lfp_data_ptrs *ptrs;
+	const struct lvds_pnp_id *pnp_id;
+	int panel_type = panel->vbt.panel_type;
+
+	ptrs = find_section(i915, BDB_LVDS_LFP_DATA_PTRS);
+	if (!ptrs)
+		return;
+
+	data = find_section(i915, BDB_LVDS_LFP_DATA);
+	if (!data)
+		return;
+
+	if (!panel->vbt.lfp_lvds_vbt_mode)
+		parse_lfp_panel_dtd(i915, panel, data, ptrs);
+
+	pnp_id = get_lvds_pnp_id(data, ptrs, panel_type);
+	dump_pnp_id(i915, pnp_id, "Panel");
+
+	tail = get_lfp_data_tail(data, ptrs);
+	if (!tail)
+		return;
+
+	drm_dbg_kms(&i915->drm, "Panel name: %.*s\n",
+		    (int)sizeof(tail->panel_name[0].name),
+		    tail->panel_name[panel_type].name);
+
+	if (i915->display.vbt.version >= 188) {
+		panel->vbt.seamless_drrs_min_refresh_rate =
+			tail->seamless_drrs_min_refresh_rate[panel_type];
+		drm_dbg_kms(&i915->drm,
+			    "Seamless DRRS min refresh rate: %d Hz\n",
+			    panel->vbt.seamless_drrs_min_refresh_rate);
+	}
+}
+
+static void
+parse_generic_dtd(struct drm_i915_private *i915,
+		  struct intel_panel *panel)
+{
+	const struct bdb_generic_dtd *generic_dtd;
+	const struct generic_dtd_entry *dtd;
+	struct drm_display_mode *panel_fixed_mode;
+	int num_dtd;
+
+	/*
+	 * Older VBTs provided DTD information for internal displays through
+	 * the "LFP panel tables" block (42).  As of VBT revision 229 the
+	 * DTD information should be provided via a newer "generic DTD"
+	 * block (58).  Just to be safe, we'll try the new generic DTD block
+	 * first on VBT >= 229, but still fall back to trying the old LFP
+	 * block if that fails.
+	 */
+	if (i915->display.vbt.version < 229)
+		return;
+
+	generic_dtd = find_section(i915, BDB_GENERIC_DTD);
+	if (!generic_dtd)
+		return;
+
+	if (generic_dtd->gdtd_size < sizeof(struct generic_dtd_entry)) {
+		drm_err(&i915->drm, "GDTD size %u is too small.\n",
+			generic_dtd->gdtd_size);
+		return;
+	} else if (generic_dtd->gdtd_size !=
+		   sizeof(struct generic_dtd_entry)) {
+		drm_err(&i915->drm, "Unexpected GDTD size %u\n",
+			generic_dtd->gdtd_size);
+		/* DTD has unknown fields, but keep going */
+	}
+
+	num_dtd = (get_blocksize(generic_dtd) -
+		   sizeof(struct bdb_generic_dtd)) / generic_dtd->gdtd_size;
+	if (panel->vbt.panel_type >= num_dtd) {
+		drm_err(&i915->drm,
+			"Panel type %d not found in table of %d DTD's\n",
+			panel->vbt.panel_type, num_dtd);
+		return;
+	}
+
+	dtd = &generic_dtd->dtd[panel->vbt.panel_type];
+
+	panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL);
+	if (!panel_fixed_mode)
+		return;
+
+	panel_fixed_mode->hdisplay = dtd->hactive;
+	panel_fixed_mode->hsync_start =
+		panel_fixed_mode->hdisplay + dtd->hfront_porch;
+	panel_fixed_mode->hsync_end =
+		panel_fixed_mode->hsync_start + dtd->hsync;
+	panel_fixed_mode->htotal =
+		panel_fixed_mode->hdisplay + dtd->hblank;
+
+	panel_fixed_mode->vdisplay = dtd->vactive;
+	panel_fixed_mode->vsync_start =
+		panel_fixed_mode->vdisplay + dtd->vfront_porch;
+	panel_fixed_mode->vsync_end =
+		panel_fixed_mode->vsync_start + dtd->vsync;
+	panel_fixed_mode->vtotal =
+		panel_fixed_mode->vdisplay + dtd->vblank;
+
+	panel_fixed_mode->clock = dtd->pixel_clock;
+	panel_fixed_mode->width_mm = dtd->width_mm;
+	panel_fixed_mode->height_mm = dtd->height_mm;
+
+	panel_fixed_mode->type = DRM_MODE_TYPE_PREFERRED;
+	drm_mode_set_name(panel_fixed_mode);
+
+	if (dtd->hsync_positive_polarity)
+		panel_fixed_mode->flags |= DRM_MODE_FLAG_PHSYNC;
+	else
+		panel_fixed_mode->flags |= DRM_MODE_FLAG_NHSYNC;
+
+	if (dtd->vsync_positive_polarity)
+		panel_fixed_mode->flags |= DRM_MODE_FLAG_PVSYNC;
+	else
+		panel_fixed_mode->flags |= DRM_MODE_FLAG_NVSYNC;
+
+	drm_dbg_kms(&i915->drm,
+		    "Found panel mode in BIOS VBT generic dtd table: " DRM_MODE_FMT "\n",
+		    DRM_MODE_ARG(panel_fixed_mode));
+
+	panel->vbt.lfp_lvds_vbt_mode = panel_fixed_mode;
+}
+
+static void
+parse_lfp_backlight(struct drm_i915_private *i915,
+		    struct intel_panel *panel)
+{
+	const struct bdb_lfp_backlight_data *backlight_data;
+	const struct lfp_backlight_data_entry *entry;
+	int panel_type = panel->vbt.panel_type;
+	u16 level;
+
+	backlight_data = find_section(i915, BDB_LVDS_BACKLIGHT);
+	if (!backlight_data)
+		return;
+
+	if (backlight_data->entry_size != sizeof(backlight_data->data[0])) {
+		drm_dbg_kms(&i915->drm,
+			    "Unsupported backlight data entry size %u\n",
+			    backlight_data->entry_size);
+		return;
+	}
+
+	entry = &backlight_data->data[panel_type];
+
+	panel->vbt.backlight.present = entry->type == BDB_BACKLIGHT_TYPE_PWM;
+	if (!panel->vbt.backlight.present) {
+		drm_dbg_kms(&i915->drm,
+			    "PWM backlight not present in VBT (type %u)\n",
+			    entry->type);
+		return;
+	}
+
+	panel->vbt.backlight.type = INTEL_BACKLIGHT_DISPLAY_DDI;
+	if (i915->display.vbt.version >= 191) {
+		size_t exp_size;
+
+		if (i915->display.vbt.version >= 236)
+			exp_size = sizeof(struct bdb_lfp_backlight_data);
+		else if (i915->display.vbt.version >= 234)
+			exp_size = EXP_BDB_LFP_BL_DATA_SIZE_REV_234;
+		else
+			exp_size = EXP_BDB_LFP_BL_DATA_SIZE_REV_191;
+
+		if (get_blocksize(backlight_data) >= exp_size) {
+			const struct lfp_backlight_control_method *method;
+
+			method = &backlight_data->backlight_control[panel_type];
+			panel->vbt.backlight.type = method->type;
+			panel->vbt.backlight.controller = method->controller;
+		}
+	}
+
+	panel->vbt.backlight.pwm_freq_hz = entry->pwm_freq_hz;
+	panel->vbt.backlight.active_low_pwm = entry->active_low_pwm;
+
+	if (i915->display.vbt.version >= 234) {
+		u16 min_level;
+		bool scale;
+
+		level = backlight_data->brightness_level[panel_type].level;
+		min_level = backlight_data->brightness_min_level[panel_type].level;
+
+		if (i915->display.vbt.version >= 236)
+			scale = backlight_data->brightness_precision_bits[panel_type] == 16;
+		else
+			scale = level > 255;
+
+		if (scale)
+			min_level = min_level / 255;
+
+		if (min_level > 255) {
+			drm_warn(&i915->drm, "Brightness min level > 255\n");
+			level = 255;
+		}
+		panel->vbt.backlight.min_brightness = min_level;
+
+		panel->vbt.backlight.brightness_precision_bits =
+			backlight_data->brightness_precision_bits[panel_type];
+	} else {
+		level = backlight_data->level[panel_type];
+		panel->vbt.backlight.min_brightness = entry->min_brightness;
+	}
+
+	drm_dbg_kms(&i915->drm,
+		    "VBT backlight PWM modulation frequency %u Hz, "
+		    "active %s, min brightness %u, level %u, controller %u\n",
+		    panel->vbt.backlight.pwm_freq_hz,
+		    panel->vbt.backlight.active_low_pwm ? "low" : "high",
+		    panel->vbt.backlight.min_brightness,
+		    level,
+		    panel->vbt.backlight.controller);
+}
+
+/* Try to find sdvo panel data */
+static void
+parse_sdvo_panel_data(struct drm_i915_private *i915,
+		      struct intel_panel *panel)
+{
+	const struct bdb_sdvo_panel_dtds *dtds;
+	struct drm_display_mode *panel_fixed_mode;
+	int index;
+
+	index = i915->params.vbt_sdvo_panel_type;
+	if (index == -2) {
+		drm_dbg_kms(&i915->drm,
+			    "Ignore SDVO panel mode from BIOS VBT tables.\n");
+		return;
+	}
+
+	if (index == -1) {
+		const struct bdb_sdvo_lvds_options *sdvo_lvds_options;
+
+		sdvo_lvds_options = find_section(i915, BDB_SDVO_LVDS_OPTIONS);
+		if (!sdvo_lvds_options)
+			return;
+
+		index = sdvo_lvds_options->panel_type;
+	}
+
+	dtds = find_section(i915, BDB_SDVO_PANEL_DTDS);
+	if (!dtds)
+		return;
+
+	panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL);
+	if (!panel_fixed_mode)
+		return;
+
+	fill_detail_timing_data(panel_fixed_mode, &dtds->dtds[index]);
+
+	panel->vbt.sdvo_lvds_vbt_mode = panel_fixed_mode;
+
+	drm_dbg_kms(&i915->drm,
+		    "Found SDVO panel mode in BIOS VBT tables: " DRM_MODE_FMT "\n",
+		    DRM_MODE_ARG(panel_fixed_mode));
+}
+
+static int intel_bios_ssc_frequency(struct drm_i915_private *i915,
+				    bool alternate)
+{
+	switch (DISPLAY_VER(i915)) {
+	case 2:
+		return alternate ? 66667 : 48000;
+	case 3:
+	case 4:
+		return alternate ? 100000 : 96000;
+	default:
+		return alternate ? 100000 : 120000;
+	}
+}
+
+static void
+parse_general_features(struct drm_i915_private *i915)
+{
+	const struct bdb_general_features *general;
+
+	general = find_section(i915, BDB_GENERAL_FEATURES);
+	if (!general)
+		return;
+
+	i915->display.vbt.int_tv_support = general->int_tv_support;
+	/* int_crt_support can't be trusted on earlier platforms */
+	if (i915->display.vbt.version >= 155 &&
+	    (HAS_DDI(i915) || IS_VALLEYVIEW(i915)))
+		i915->display.vbt.int_crt_support = general->int_crt_support;
+	i915->display.vbt.lvds_use_ssc = general->enable_ssc;
+	i915->display.vbt.lvds_ssc_freq =
+		intel_bios_ssc_frequency(i915, general->ssc_freq);
+	i915->display.vbt.display_clock_mode = general->display_clock_mode;
+	i915->display.vbt.fdi_rx_polarity_inverted = general->fdi_rx_polarity_inverted;
+	if (i915->display.vbt.version >= 181) {
+		i915->display.vbt.orientation = general->rotate_180 ?
+			DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP :
+			DRM_MODE_PANEL_ORIENTATION_NORMAL;
+	} else {
+		i915->display.vbt.orientation = DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
+	}
+
+	if (i915->display.vbt.version >= 249 && general->afc_startup_config) {
+		i915->display.vbt.override_afc_startup = true;
+		i915->display.vbt.override_afc_startup_val = general->afc_startup_config == 0x1 ? 0x0 : 0x7;
+	}
+
+	drm_dbg_kms(&i915->drm,
+		    "BDB_GENERAL_FEATURES int_tv_support %d int_crt_support %d lvds_use_ssc %d lvds_ssc_freq %d display_clock_mode %d fdi_rx_polarity_inverted %d\n",
+		    i915->display.vbt.int_tv_support,
+		    i915->display.vbt.int_crt_support,
+		    i915->display.vbt.lvds_use_ssc,
+		    i915->display.vbt.lvds_ssc_freq,
+		    i915->display.vbt.display_clock_mode,
+		    i915->display.vbt.fdi_rx_polarity_inverted);
+}
+
+static const struct child_device_config *
+child_device_ptr(const struct bdb_general_definitions *defs, int i)
+{
+	return (const void *) &defs->devices[i * defs->child_dev_size];
+}
+
+static void
+parse_sdvo_device_mapping(struct drm_i915_private *i915)
+{
+	struct sdvo_device_mapping *mapping;
+	const struct intel_bios_encoder_data *devdata;
+	const struct child_device_config *child;
+	int count = 0;
+
+	/*
+	 * Only parse SDVO mappings on gens that could have SDVO. This isn't
+	 * accurate and doesn't have to be, as long as it's not too strict.
+	 */
+	if (!IS_DISPLAY_VER(i915, 3, 7)) {
+		drm_dbg_kms(&i915->drm, "Skipping SDVO device mapping\n");
+		return;
+	}
+
+	list_for_each_entry(devdata, &i915->display.vbt.display_devices, node) {
+		child = &devdata->child;
+
+		if (child->slave_addr != SLAVE_ADDR1 &&
+		    child->slave_addr != SLAVE_ADDR2) {
+			/*
+			 * If the slave address is neither 0x70 nor 0x72,
+			 * it is not a SDVO device. Skip it.
+			 */
+			continue;
+		}
+		if (child->dvo_port != DEVICE_PORT_DVOB &&
+		    child->dvo_port != DEVICE_PORT_DVOC) {
+			/* skip the incorrect SDVO port */
+			drm_dbg_kms(&i915->drm,
+				    "Incorrect SDVO port. Skip it\n");
+			continue;
+		}
+		drm_dbg_kms(&i915->drm,
+			    "the SDVO device with slave addr %2x is found on"
+			    " %s port\n",
+			    child->slave_addr,
+			    (child->dvo_port == DEVICE_PORT_DVOB) ?
+			    "SDVOB" : "SDVOC");
+		mapping = &i915->display.vbt.sdvo_mappings[child->dvo_port - 1];
+		if (!mapping->initialized) {
+			mapping->dvo_port = child->dvo_port;
+			mapping->slave_addr = child->slave_addr;
+			mapping->dvo_wiring = child->dvo_wiring;
+			mapping->ddc_pin = child->ddc_pin;
+			mapping->i2c_pin = child->i2c_pin;
+			mapping->initialized = 1;
+			drm_dbg_kms(&i915->drm,
+				    "SDVO device: dvo=%x, addr=%x, wiring=%d, ddc_pin=%d, i2c_pin=%d\n",
+				    mapping->dvo_port, mapping->slave_addr,
+				    mapping->dvo_wiring, mapping->ddc_pin,
+				    mapping->i2c_pin);
+		} else {
+			drm_dbg_kms(&i915->drm,
+				    "Maybe one SDVO port is shared by "
+				    "two SDVO device.\n");
+		}
+		if (child->slave2_addr) {
+			/* Maybe this is a SDVO device with multiple inputs */
+			/* And the mapping info is not added */
+			drm_dbg_kms(&i915->drm,
+				    "there exists the slave2_addr. Maybe this"
+				    " is a SDVO device with multiple inputs.\n");
+		}
+		count++;
+	}
+
+	if (!count) {
+		/* No SDVO device info is found */
+		drm_dbg_kms(&i915->drm,
+			    "No SDVO device info is found in VBT\n");
+	}
+}
+
+static void
+parse_driver_features(struct drm_i915_private *i915)
+{
+	const struct bdb_driver_features *driver;
+
+	driver = find_section(i915, BDB_DRIVER_FEATURES);
+	if (!driver)
+		return;
+
+	if (DISPLAY_VER(i915) >= 5) {
+		/*
+		 * Note that we consider BDB_DRIVER_FEATURE_INT_SDVO_LVDS
+		 * to mean "eDP". The VBT spec doesn't agree with that
+		 * interpretation, but real world VBTs seem to.
+		 */
+		if (driver->lvds_config != BDB_DRIVER_FEATURE_INT_LVDS)
+			i915->display.vbt.int_lvds_support = 0;
+	} else {
+		/*
+		 * FIXME it's not clear which BDB version has the LVDS config
+		 * bits defined. Revision history in the VBT spec says:
+		 * "0.92 | Add two definitions for VBT value of LVDS Active
+		 *  Config (00b and 11b values defined) | 06/13/2005"
+		 * but does not the specify the BDB version.
+		 *
+		 * So far version 134 (on i945gm) is the oldest VBT observed
+		 * in the wild with the bits correctly populated. Version
+		 * 108 (on i85x) does not have the bits correctly populated.
+		 */
+		if (i915->display.vbt.version >= 134 &&
+		    driver->lvds_config != BDB_DRIVER_FEATURE_INT_LVDS &&
+		    driver->lvds_config != BDB_DRIVER_FEATURE_INT_SDVO_LVDS)
+			i915->display.vbt.int_lvds_support = 0;
+	}
+}
+
+static void
+parse_panel_driver_features(struct drm_i915_private *i915,
+			    struct intel_panel *panel)
+{
+	const struct bdb_driver_features *driver;
+
+	driver = find_section(i915, BDB_DRIVER_FEATURES);
+	if (!driver)
+		return;
+
+	if (i915->display.vbt.version < 228) {
+		drm_dbg_kms(&i915->drm, "DRRS State Enabled:%d\n",
+			    driver->drrs_enabled);
+		/*
+		 * If DRRS is not supported, drrs_type has to be set to 0.
+		 * This is because, VBT is configured in such a way that
+		 * static DRRS is 0 and DRRS not supported is represented by
+		 * driver->drrs_enabled=false
+		 */
+		if (!driver->drrs_enabled && panel->vbt.drrs_type != DRRS_TYPE_NONE) {
+			/*
+			 * FIXME Should DMRRS perhaps be treated as seamless
+			 * but without the automatic downclocking?
+			 */
+			if (driver->dmrrs_enabled)
+				panel->vbt.drrs_type = DRRS_TYPE_STATIC;
+			else
+				panel->vbt.drrs_type = DRRS_TYPE_NONE;
+		}
+
+		panel->vbt.psr.enable = driver->psr_enabled;
+	}
+}
+
+static void
+parse_power_conservation_features(struct drm_i915_private *i915,
+				  struct intel_panel *panel)
+{
+	const struct bdb_lfp_power *power;
+	u8 panel_type = panel->vbt.panel_type;
+
+	panel->vbt.vrr = true; /* matches Windows behaviour */
+
+	if (i915->display.vbt.version < 228)
+		return;
+
+	power = find_section(i915, BDB_LFP_POWER);
+	if (!power)
+		return;
+
+	panel->vbt.psr.enable = panel_bool(power->psr, panel_type);
+
+	/*
+	 * If DRRS is not supported, drrs_type has to be set to 0.
+	 * This is because, VBT is configured in such a way that
+	 * static DRRS is 0 and DRRS not supported is represented by
+	 * power->drrs & BIT(panel_type)=false
+	 */
+	if (!panel_bool(power->drrs, panel_type) && panel->vbt.drrs_type != DRRS_TYPE_NONE) {
+		/*
+		 * FIXME Should DMRRS perhaps be treated as seamless
+		 * but without the automatic downclocking?
+		 */
+		if (panel_bool(power->dmrrs, panel_type))
+			panel->vbt.drrs_type = DRRS_TYPE_STATIC;
+		else
+			panel->vbt.drrs_type = DRRS_TYPE_NONE;
+	}
+
+	if (i915->display.vbt.version >= 232)
+		panel->vbt.edp.hobl = panel_bool(power->hobl, panel_type);
+
+	if (i915->display.vbt.version >= 233)
+		panel->vbt.vrr = panel_bool(power->vrr_feature_enabled,
+					    panel_type);
+}
+
+static void
+parse_edp(struct drm_i915_private *i915,
+	  struct intel_panel *panel)
+{
+	const struct bdb_edp *edp;
+	const struct edp_power_seq *edp_pps;
+	const struct edp_fast_link_params *edp_link_params;
+	int panel_type = panel->vbt.panel_type;
+
+	edp = find_section(i915, BDB_EDP);
+	if (!edp)
+		return;
+
+	switch (panel_bits(edp->color_depth, panel_type, 2)) {
+	case EDP_18BPP:
+		panel->vbt.edp.bpp = 18;
+		break;
+	case EDP_24BPP:
+		panel->vbt.edp.bpp = 24;
+		break;
+	case EDP_30BPP:
+		panel->vbt.edp.bpp = 30;
+		break;
+	}
+
+	/* Get the eDP sequencing and link info */
+	edp_pps = &edp->power_seqs[panel_type];
+	edp_link_params = &edp->fast_link_params[panel_type];
+
+	panel->vbt.edp.pps = *edp_pps;
+
+	if (i915->display.vbt.version >= 224) {
+		panel->vbt.edp.rate =
+			edp->edp_fast_link_training_rate[panel_type] * 20;
+	} else {
+		switch (edp_link_params->rate) {
+		case EDP_RATE_1_62:
+			panel->vbt.edp.rate = 162000;
+			break;
+		case EDP_RATE_2_7:
+			panel->vbt.edp.rate = 270000;
+			break;
+		case EDP_RATE_5_4:
+			panel->vbt.edp.rate = 540000;
+			break;
+		default:
+			drm_dbg_kms(&i915->drm,
+				    "VBT has unknown eDP link rate value %u\n",
+				    edp_link_params->rate);
+			break;
+		}
+	}
+
+	switch (edp_link_params->lanes) {
+	case EDP_LANE_1:
+		panel->vbt.edp.lanes = 1;
+		break;
+	case EDP_LANE_2:
+		panel->vbt.edp.lanes = 2;
+		break;
+	case EDP_LANE_4:
+		panel->vbt.edp.lanes = 4;
+		break;
+	default:
+		drm_dbg_kms(&i915->drm,
+			    "VBT has unknown eDP lane count value %u\n",
+			    edp_link_params->lanes);
+		break;
+	}
+
+	switch (edp_link_params->preemphasis) {
+	case EDP_PREEMPHASIS_NONE:
+		panel->vbt.edp.preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_0;
+		break;
+	case EDP_PREEMPHASIS_3_5dB:
+		panel->vbt.edp.preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_1;
+		break;
+	case EDP_PREEMPHASIS_6dB:
+		panel->vbt.edp.preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_2;
+		break;
+	case EDP_PREEMPHASIS_9_5dB:
+		panel->vbt.edp.preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_3;
+		break;
+	default:
+		drm_dbg_kms(&i915->drm,
+			    "VBT has unknown eDP pre-emphasis value %u\n",
+			    edp_link_params->preemphasis);
+		break;
+	}
+
+	switch (edp_link_params->vswing) {
+	case EDP_VSWING_0_4V:
+		panel->vbt.edp.vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_0;
+		break;
+	case EDP_VSWING_0_6V:
+		panel->vbt.edp.vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_1;
+		break;
+	case EDP_VSWING_0_8V:
+		panel->vbt.edp.vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_2;
+		break;
+	case EDP_VSWING_1_2V:
+		panel->vbt.edp.vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_3;
+		break;
+	default:
+		drm_dbg_kms(&i915->drm,
+			    "VBT has unknown eDP voltage swing value %u\n",
+			    edp_link_params->vswing);
+		break;
+	}
+
+	if (i915->display.vbt.version >= 173) {
+		u8 vswing;
+
+		/* Don't read from VBT if module parameter has valid value*/
+		if (i915->params.edp_vswing) {
+			panel->vbt.edp.low_vswing =
+				i915->params.edp_vswing == 1;
+		} else {
+			vswing = (edp->edp_vswing_preemph >> (panel_type * 4)) & 0xF;
+			panel->vbt.edp.low_vswing = vswing == 0;
+		}
+	}
+
+	panel->vbt.edp.drrs_msa_timing_delay =
+		panel_bits(edp->sdrrs_msa_timing_delay, panel_type, 2);
+
+	if (i915->display.vbt.version >= 244)
+		panel->vbt.edp.max_link_rate =
+			edp->edp_max_port_link_rate[panel_type] * 20;
+}
+
+static void
+parse_psr(struct drm_i915_private *i915,
+	  struct intel_panel *panel)
+{
+	const struct bdb_psr *psr;
+	const struct psr_table *psr_table;
+	int panel_type = panel->vbt.panel_type;
+
+	psr = find_section(i915, BDB_PSR);
+	if (!psr) {
+		drm_dbg_kms(&i915->drm, "No PSR BDB found.\n");
+		return;
+	}
+
+	psr_table = &psr->psr_table[panel_type];
+
+	panel->vbt.psr.full_link = psr_table->full_link;
+	panel->vbt.psr.require_aux_wakeup = psr_table->require_aux_to_wakeup;
+
+	/* Allowed VBT values goes from 0 to 15 */
+	panel->vbt.psr.idle_frames = psr_table->idle_frames < 0 ? 0 :
+		psr_table->idle_frames > 15 ? 15 : psr_table->idle_frames;
+
+	/*
+	 * New psr options 0=500us, 1=100us, 2=2500us, 3=0us
+	 * Old decimal value is wake up time in multiples of 100 us.
+	 */
+	if (i915->display.vbt.version >= 205 &&
+	    (DISPLAY_VER(i915) >= 9 && !IS_BROXTON(i915))) {
+		switch (psr_table->tp1_wakeup_time) {
+		case 0:
+			panel->vbt.psr.tp1_wakeup_time_us = 500;
+			break;
+		case 1:
+			panel->vbt.psr.tp1_wakeup_time_us = 100;
+			break;
+		case 3:
+			panel->vbt.psr.tp1_wakeup_time_us = 0;
+			break;
+		default:
+			drm_dbg_kms(&i915->drm,
+				    "VBT tp1 wakeup time value %d is outside range[0-3], defaulting to max value 2500us\n",
+				    psr_table->tp1_wakeup_time);
+			fallthrough;
+		case 2:
+			panel->vbt.psr.tp1_wakeup_time_us = 2500;
+			break;
+		}
+
+		switch (psr_table->tp2_tp3_wakeup_time) {
+		case 0:
+			panel->vbt.psr.tp2_tp3_wakeup_time_us = 500;
+			break;
+		case 1:
+			panel->vbt.psr.tp2_tp3_wakeup_time_us = 100;
+			break;
+		case 3:
+			panel->vbt.psr.tp2_tp3_wakeup_time_us = 0;
+			break;
+		default:
+			drm_dbg_kms(&i915->drm,
+				    "VBT tp2_tp3 wakeup time value %d is outside range[0-3], defaulting to max value 2500us\n",
+				    psr_table->tp2_tp3_wakeup_time);
+			fallthrough;
+		case 2:
+			panel->vbt.psr.tp2_tp3_wakeup_time_us = 2500;
+		break;
+		}
+	} else {
+		panel->vbt.psr.tp1_wakeup_time_us = psr_table->tp1_wakeup_time * 100;
+		panel->vbt.psr.tp2_tp3_wakeup_time_us = psr_table->tp2_tp3_wakeup_time * 100;
+	}
+
+	if (i915->display.vbt.version >= 226) {
+		u32 wakeup_time = psr->psr2_tp2_tp3_wakeup_time;
+
+		wakeup_time = panel_bits(wakeup_time, panel_type, 2);
+		switch (wakeup_time) {
+		case 0:
+			wakeup_time = 500;
+			break;
+		case 1:
+			wakeup_time = 100;
+			break;
+		case 3:
+			wakeup_time = 50;
+			break;
+		default:
+		case 2:
+			wakeup_time = 2500;
+			break;
+		}
+		panel->vbt.psr.psr2_tp2_tp3_wakeup_time_us = wakeup_time;
+	} else {
+		/* Reusing PSR1 wakeup time for PSR2 in older VBTs */
+		panel->vbt.psr.psr2_tp2_tp3_wakeup_time_us = panel->vbt.psr.tp2_tp3_wakeup_time_us;
+	}
+}
+
+static void parse_dsi_backlight_ports(struct drm_i915_private *i915,
+				      struct intel_panel *panel,
+				      enum port port)
+{
+	enum port port_bc = DISPLAY_VER(i915) >= 11 ? PORT_B : PORT_C;
+
+	if (!panel->vbt.dsi.config->dual_link || i915->display.vbt.version < 197) {
+		panel->vbt.dsi.bl_ports = BIT(port);
+		if (panel->vbt.dsi.config->cabc_supported)
+			panel->vbt.dsi.cabc_ports = BIT(port);
+
+		return;
+	}
+
+	switch (panel->vbt.dsi.config->dl_dcs_backlight_ports) {
+	case DL_DCS_PORT_A:
+		panel->vbt.dsi.bl_ports = BIT(PORT_A);
+		break;
+	case DL_DCS_PORT_C:
+		panel->vbt.dsi.bl_ports = BIT(port_bc);
+		break;
+	default:
+	case DL_DCS_PORT_A_AND_C:
+		panel->vbt.dsi.bl_ports = BIT(PORT_A) | BIT(port_bc);
+		break;
+	}
+
+	if (!panel->vbt.dsi.config->cabc_supported)
+		return;
+
+	switch (panel->vbt.dsi.config->dl_dcs_cabc_ports) {
+	case DL_DCS_PORT_A:
+		panel->vbt.dsi.cabc_ports = BIT(PORT_A);
+		break;
+	case DL_DCS_PORT_C:
+		panel->vbt.dsi.cabc_ports = BIT(port_bc);
+		break;
+	default:
+	case DL_DCS_PORT_A_AND_C:
+		panel->vbt.dsi.cabc_ports =
+					BIT(PORT_A) | BIT(port_bc);
+		break;
+	}
+}
+
+static void
+parse_mipi_config(struct drm_i915_private *i915,
+		  struct intel_panel *panel)
+{
+	const struct bdb_mipi_config *start;
+	const struct mipi_config *config;
+	const struct mipi_pps_data *pps;
+	int panel_type = panel->vbt.panel_type;
+	enum port port;
+
+	/* parse MIPI blocks only if LFP type is MIPI */
+	if (!intel_bios_is_dsi_present(i915, &port))
+		return;
+
+	/* Initialize this to undefined indicating no generic MIPI support */
+	panel->vbt.dsi.panel_id = MIPI_DSI_UNDEFINED_PANEL_ID;
+
+	/* Block #40 is already parsed and panel_fixed_mode is
+	 * stored in i915->lfp_lvds_vbt_mode
+	 * resuse this when needed
+	 */
+
+	/* Parse #52 for panel index used from panel_type already
+	 * parsed
+	 */
+	start = find_section(i915, BDB_MIPI_CONFIG);
+	if (!start) {
+		drm_dbg_kms(&i915->drm, "No MIPI config BDB found");
+		return;
+	}
+
+	drm_dbg(&i915->drm, "Found MIPI Config block, panel index = %d\n",
+		panel_type);
+
+	/*
+	 * get hold of the correct configuration block and pps data as per
+	 * the panel_type as index
+	 */
+	config = &start->config[panel_type];
+	pps = &start->pps[panel_type];
+
+	/* store as of now full data. Trim when we realise all is not needed */
+	panel->vbt.dsi.config = kmemdup(config, sizeof(struct mipi_config), GFP_KERNEL);
+	if (!panel->vbt.dsi.config)
+		return;
+
+	panel->vbt.dsi.pps = kmemdup(pps, sizeof(struct mipi_pps_data), GFP_KERNEL);
+	if (!panel->vbt.dsi.pps) {
+		kfree(panel->vbt.dsi.config);
+		return;
+	}
+
+	parse_dsi_backlight_ports(i915, panel, port);
+
+	/* FIXME is the 90 vs. 270 correct? */
+	switch (config->rotation) {
+	case ENABLE_ROTATION_0:
+		/*
+		 * Most (all?) VBTs claim 0 degrees despite having
+		 * an upside down panel, thus we do not trust this.
+		 */
+		panel->vbt.dsi.orientation =
+			DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
+		break;
+	case ENABLE_ROTATION_90:
+		panel->vbt.dsi.orientation =
+			DRM_MODE_PANEL_ORIENTATION_RIGHT_UP;
+		break;
+	case ENABLE_ROTATION_180:
+		panel->vbt.dsi.orientation =
+			DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP;
+		break;
+	case ENABLE_ROTATION_270:
+		panel->vbt.dsi.orientation =
+			DRM_MODE_PANEL_ORIENTATION_LEFT_UP;
+		break;
+	}
+
+	/* We have mandatory mipi config blocks. Initialize as generic panel */
+	panel->vbt.dsi.panel_id = MIPI_DSI_GENERIC_PANEL_ID;
+}
+
+/* Find the sequence block and size for the given panel. */
+static const u8 *
+find_panel_sequence_block(const struct bdb_mipi_sequence *sequence,
+			  u16 panel_id, u32 *seq_size)
+{
+	u32 total = get_blocksize(sequence);
+	const u8 *data = &sequence->data[0];
+	u8 current_id;
+	u32 current_size;
+	int header_size = sequence->version >= 3 ? 5 : 3;
+	int index = 0;
+	int i;
+
+	/* skip new block size */
+	if (sequence->version >= 3)
+		data += 4;
+
+	for (i = 0; i < MAX_MIPI_CONFIGURATIONS && index < total; i++) {
+		if (index + header_size > total) {
+			DRM_ERROR("Invalid sequence block (header)\n");
+			return NULL;
+		}
+
+		current_id = *(data + index);
+		if (sequence->version >= 3)
+			current_size = *((const u32 *)(data + index + 1));
+		else
+			current_size = *((const u16 *)(data + index + 1));
+
+		index += header_size;
+
+		if (index + current_size > total) {
+			DRM_ERROR("Invalid sequence block\n");
+			return NULL;
+		}
+
+		if (current_id == panel_id) {
+			*seq_size = current_size;
+			return data + index;
+		}
+
+		index += current_size;
+	}
+
+	DRM_ERROR("Sequence block detected but no valid configuration\n");
+
+	return NULL;
+}
+
+static int goto_next_sequence(const u8 *data, int index, int total)
+{
+	u16 len;
+
+	/* Skip Sequence Byte. */
+	for (index = index + 1; index < total; index += len) {
+		u8 operation_byte = *(data + index);
+		index++;
+
+		switch (operation_byte) {
+		case MIPI_SEQ_ELEM_END:
+			return index;
+		case MIPI_SEQ_ELEM_SEND_PKT:
+			if (index + 4 > total)
+				return 0;
+
+			len = *((const u16 *)(data + index + 2)) + 4;
+			break;
+		case MIPI_SEQ_ELEM_DELAY:
+			len = 4;
+			break;
+		case MIPI_SEQ_ELEM_GPIO:
+			len = 2;
+			break;
+		case MIPI_SEQ_ELEM_I2C:
+			if (index + 7 > total)
+				return 0;
+			len = *(data + index + 6) + 7;
+			break;
+		default:
+			DRM_ERROR("Unknown operation byte\n");
+			return 0;
+		}
+	}
+
+	return 0;
+}
+
+static int goto_next_sequence_v3(const u8 *data, int index, int total)
+{
+	int seq_end;
+	u16 len;
+	u32 size_of_sequence;
+
+	/*
+	 * Could skip sequence based on Size of Sequence alone, but also do some
+	 * checking on the structure.
+	 */
+	if (total < 5) {
+		DRM_ERROR("Too small sequence size\n");
+		return 0;
+	}
+
+	/* Skip Sequence Byte. */
+	index++;
+
+	/*
+	 * Size of Sequence. Excludes the Sequence Byte and the size itself,
+	 * includes MIPI_SEQ_ELEM_END byte, excludes the final MIPI_SEQ_END
+	 * byte.
+	 */
+	size_of_sequence = *((const u32 *)(data + index));
+	index += 4;
+
+	seq_end = index + size_of_sequence;
+	if (seq_end > total) {
+		DRM_ERROR("Invalid sequence size\n");
+		return 0;
+	}
+
+	for (; index < total; index += len) {
+		u8 operation_byte = *(data + index);
+		index++;
+
+		if (operation_byte == MIPI_SEQ_ELEM_END) {
+			if (index != seq_end) {
+				DRM_ERROR("Invalid element structure\n");
+				return 0;
+			}
+			return index;
+		}
+
+		len = *(data + index);
+		index++;
+
+		/*
+		 * FIXME: Would be nice to check elements like for v1/v2 in
+		 * goto_next_sequence() above.
+		 */
+		switch (operation_byte) {
+		case MIPI_SEQ_ELEM_SEND_PKT:
+		case MIPI_SEQ_ELEM_DELAY:
+		case MIPI_SEQ_ELEM_GPIO:
+		case MIPI_SEQ_ELEM_I2C:
+		case MIPI_SEQ_ELEM_SPI:
+		case MIPI_SEQ_ELEM_PMIC:
+			break;
+		default:
+			DRM_ERROR("Unknown operation byte %u\n",
+				  operation_byte);
+			break;
+		}
+	}
+
+	return 0;
+}
+
+/*
+ * Get len of pre-fixed deassert fragment from a v1 init OTP sequence,
+ * skip all delay + gpio operands and stop at the first DSI packet op.
+ */
+static int get_init_otp_deassert_fragment_len(struct drm_i915_private *i915,
+					      struct intel_panel *panel)
+{
+	const u8 *data = panel->vbt.dsi.sequence[MIPI_SEQ_INIT_OTP];
+	int index, len;
+
+	if (drm_WARN_ON(&i915->drm,
+			!data || panel->vbt.dsi.seq_version != 1))
+		return 0;
+
+	/* index = 1 to skip sequence byte */
+	for (index = 1; data[index] != MIPI_SEQ_ELEM_END; index += len) {
+		switch (data[index]) {
+		case MIPI_SEQ_ELEM_SEND_PKT:
+			return index == 1 ? 0 : index;
+		case MIPI_SEQ_ELEM_DELAY:
+			len = 5; /* 1 byte for operand + uint32 */
+			break;
+		case MIPI_SEQ_ELEM_GPIO:
+			len = 3; /* 1 byte for op, 1 for gpio_nr, 1 for value */
+			break;
+		default:
+			return 0;
+		}
+	}
+
+	return 0;
+}
+
+/*
+ * Some v1 VBT MIPI sequences do the deassert in the init OTP sequence.
+ * The deassert must be done before calling intel_dsi_device_ready, so for
+ * these devices we split the init OTP sequence into a deassert sequence and
+ * the actual init OTP part.
+ */
+static void fixup_mipi_sequences(struct drm_i915_private *i915,
+				 struct intel_panel *panel)
+{
+	u8 *init_otp;
+	int len;
+
+	/* Limit this to VLV for now. */
+	if (!IS_VALLEYVIEW(i915))
+		return;
+
+	/* Limit this to v1 vid-mode sequences */
+	if (panel->vbt.dsi.config->is_cmd_mode ||
+	    panel->vbt.dsi.seq_version != 1)
+		return;
+
+	/* Only do this if there are otp and assert seqs and no deassert seq */
+	if (!panel->vbt.dsi.sequence[MIPI_SEQ_INIT_OTP] ||
+	    !panel->vbt.dsi.sequence[MIPI_SEQ_ASSERT_RESET] ||
+	    panel->vbt.dsi.sequence[MIPI_SEQ_DEASSERT_RESET])
+		return;
+
+	/* The deassert-sequence ends at the first DSI packet */
+	len = get_init_otp_deassert_fragment_len(i915, panel);
+	if (!len)
+		return;
+
+	drm_dbg_kms(&i915->drm,
+		    "Using init OTP fragment to deassert reset\n");
+
+	/* Copy the fragment, update seq byte and terminate it */
+	init_otp = (u8 *)panel->vbt.dsi.sequence[MIPI_SEQ_INIT_OTP];
+	panel->vbt.dsi.deassert_seq = kmemdup(init_otp, len + 1, GFP_KERNEL);
+	if (!panel->vbt.dsi.deassert_seq)
+		return;
+	panel->vbt.dsi.deassert_seq[0] = MIPI_SEQ_DEASSERT_RESET;
+	panel->vbt.dsi.deassert_seq[len] = MIPI_SEQ_ELEM_END;
+	/* Use the copy for deassert */
+	panel->vbt.dsi.sequence[MIPI_SEQ_DEASSERT_RESET] =
+		panel->vbt.dsi.deassert_seq;
+	/* Replace the last byte of the fragment with init OTP seq byte */
+	init_otp[len - 1] = MIPI_SEQ_INIT_OTP;
+	/* And make MIPI_MIPI_SEQ_INIT_OTP point to it */
+	panel->vbt.dsi.sequence[MIPI_SEQ_INIT_OTP] = init_otp + len - 1;
+}
+
+static void
+parse_mipi_sequence(struct drm_i915_private *i915,
+		    struct intel_panel *panel)
+{
+	int panel_type = panel->vbt.panel_type;
+	const struct bdb_mipi_sequence *sequence;
+	const u8 *seq_data;
+	u32 seq_size;
+	u8 *data;
+	int index = 0;
+
+	/* Only our generic panel driver uses the sequence block. */
+	if (panel->vbt.dsi.panel_id != MIPI_DSI_GENERIC_PANEL_ID)
+		return;
+
+	sequence = find_section(i915, BDB_MIPI_SEQUENCE);
+	if (!sequence) {
+		drm_dbg_kms(&i915->drm,
+			    "No MIPI Sequence found, parsing complete\n");
+		return;
+	}
+
+	/* Fail gracefully for forward incompatible sequence block. */
+	if (sequence->version >= 4) {
+		drm_err(&i915->drm,
+			"Unable to parse MIPI Sequence Block v%u\n",
+			sequence->version);
+		return;
+	}
+
+	drm_dbg(&i915->drm, "Found MIPI sequence block v%u\n",
+		sequence->version);
+
+	seq_data = find_panel_sequence_block(sequence, panel_type, &seq_size);
+	if (!seq_data)
+		return;
+
+	data = kmemdup(seq_data, seq_size, GFP_KERNEL);
+	if (!data)
+		return;
+
+	/* Parse the sequences, store pointers to each sequence. */
+	for (;;) {
+		u8 seq_id = *(data + index);
+		if (seq_id == MIPI_SEQ_END)
+			break;
+
+		if (seq_id >= MIPI_SEQ_MAX) {
+			drm_err(&i915->drm, "Unknown sequence %u\n",
+				seq_id);
+			goto err;
+		}
+
+		/* Log about presence of sequences we won't run. */
+		if (seq_id == MIPI_SEQ_TEAR_ON || seq_id == MIPI_SEQ_TEAR_OFF)
+			drm_dbg_kms(&i915->drm,
+				    "Unsupported sequence %u\n", seq_id);
+
+		panel->vbt.dsi.sequence[seq_id] = data + index;
+
+		if (sequence->version >= 3)
+			index = goto_next_sequence_v3(data, index, seq_size);
+		else
+			index = goto_next_sequence(data, index, seq_size);
+		if (!index) {
+			drm_err(&i915->drm, "Invalid sequence %u\n",
+				seq_id);
+			goto err;
+		}
+	}
+
+	panel->vbt.dsi.data = data;
+	panel->vbt.dsi.size = seq_size;
+	panel->vbt.dsi.seq_version = sequence->version;
+
+	fixup_mipi_sequences(i915, panel);
+
+	drm_dbg(&i915->drm, "MIPI related VBT parsing complete\n");
+	return;
+
+err:
+	kfree(data);
+	memset(panel->vbt.dsi.sequence, 0, sizeof(panel->vbt.dsi.sequence));
+}
+
+static void
+parse_compression_parameters(struct drm_i915_private *i915)
+{
+	const struct bdb_compression_parameters *params;
+	struct intel_bios_encoder_data *devdata;
+	const struct child_device_config *child;
+	u16 block_size;
+	int index;
+
+	if (i915->display.vbt.version < 198)
+		return;
+
+	params = find_section(i915, BDB_COMPRESSION_PARAMETERS);
+	if (params) {
+		/* Sanity checks */
+		if (params->entry_size != sizeof(params->data[0])) {
+			drm_dbg_kms(&i915->drm,
+				    "VBT: unsupported compression param entry size\n");
+			return;
+		}
+
+		block_size = get_blocksize(params);
+		if (block_size < sizeof(*params)) {
+			drm_dbg_kms(&i915->drm,
+				    "VBT: expected 16 compression param entries\n");
+			return;
+		}
+	}
+
+	list_for_each_entry(devdata, &i915->display.vbt.display_devices, node) {
+		child = &devdata->child;
+
+		if (!child->compression_enable)
+			continue;
+
+		if (!params) {
+			drm_dbg_kms(&i915->drm,
+				    "VBT: compression params not available\n");
+			continue;
+		}
+
+		if (child->compression_method_cps) {
+			drm_dbg_kms(&i915->drm,
+				    "VBT: CPS compression not supported\n");
+			continue;
+		}
+
+		index = child->compression_structure_index;
+
+		devdata->dsc = kmemdup(&params->data[index],
+				       sizeof(*devdata->dsc), GFP_KERNEL);
+	}
+}
+
+static u8 translate_iboost(u8 val)
+{
+	static const u8 mapping[] = { 1, 3, 7 }; /* See VBT spec */
+
+	if (val >= ARRAY_SIZE(mapping)) {
+		DRM_DEBUG_KMS("Unsupported I_boost value found in VBT (%d), display may not work properly\n", val);
+		return 0;
+	}
+	return mapping[val];
+}
+
+static const u8 cnp_ddc_pin_map[] = {
+	[0] = 0, /* N/A */
+	[DDC_BUS_DDI_B] = GMBUS_PIN_1_BXT,
+	[DDC_BUS_DDI_C] = GMBUS_PIN_2_BXT,
+	[DDC_BUS_DDI_D] = GMBUS_PIN_4_CNP, /* sic */
+	[DDC_BUS_DDI_F] = GMBUS_PIN_3_BXT, /* sic */
+};
+
+static const u8 icp_ddc_pin_map[] = {
+	[ICL_DDC_BUS_DDI_A] = GMBUS_PIN_1_BXT,
+	[ICL_DDC_BUS_DDI_B] = GMBUS_PIN_2_BXT,
+	[TGL_DDC_BUS_DDI_C] = GMBUS_PIN_3_BXT,
+	[ICL_DDC_BUS_PORT_1] = GMBUS_PIN_9_TC1_ICP,
+	[ICL_DDC_BUS_PORT_2] = GMBUS_PIN_10_TC2_ICP,
+	[ICL_DDC_BUS_PORT_3] = GMBUS_PIN_11_TC3_ICP,
+	[ICL_DDC_BUS_PORT_4] = GMBUS_PIN_12_TC4_ICP,
+	[TGL_DDC_BUS_PORT_5] = GMBUS_PIN_13_TC5_TGP,
+	[TGL_DDC_BUS_PORT_6] = GMBUS_PIN_14_TC6_TGP,
+};
+
+static const u8 rkl_pch_tgp_ddc_pin_map[] = {
+	[ICL_DDC_BUS_DDI_A] = GMBUS_PIN_1_BXT,
+	[ICL_DDC_BUS_DDI_B] = GMBUS_PIN_2_BXT,
+	[RKL_DDC_BUS_DDI_D] = GMBUS_PIN_9_TC1_ICP,
+	[RKL_DDC_BUS_DDI_E] = GMBUS_PIN_10_TC2_ICP,
+};
+
+static const u8 adls_ddc_pin_map[] = {
+	[ICL_DDC_BUS_DDI_A] = GMBUS_PIN_1_BXT,
+	[ADLS_DDC_BUS_PORT_TC1] = GMBUS_PIN_9_TC1_ICP,
+	[ADLS_DDC_BUS_PORT_TC2] = GMBUS_PIN_10_TC2_ICP,
+	[ADLS_DDC_BUS_PORT_TC3] = GMBUS_PIN_11_TC3_ICP,
+	[ADLS_DDC_BUS_PORT_TC4] = GMBUS_PIN_12_TC4_ICP,
+};
+
+static const u8 gen9bc_tgp_ddc_pin_map[] = {
+	[DDC_BUS_DDI_B] = GMBUS_PIN_2_BXT,
+	[DDC_BUS_DDI_C] = GMBUS_PIN_9_TC1_ICP,
+	[DDC_BUS_DDI_D] = GMBUS_PIN_10_TC2_ICP,
+};
+
+static const u8 adlp_ddc_pin_map[] = {
+	[ICL_DDC_BUS_DDI_A] = GMBUS_PIN_1_BXT,
+	[ICL_DDC_BUS_DDI_B] = GMBUS_PIN_2_BXT,
+	[ADLP_DDC_BUS_PORT_TC1] = GMBUS_PIN_9_TC1_ICP,
+	[ADLP_DDC_BUS_PORT_TC2] = GMBUS_PIN_10_TC2_ICP,
+	[ADLP_DDC_BUS_PORT_TC3] = GMBUS_PIN_11_TC3_ICP,
+	[ADLP_DDC_BUS_PORT_TC4] = GMBUS_PIN_12_TC4_ICP,
+};
+
+static u8 map_ddc_pin(struct drm_i915_private *i915, u8 vbt_pin)
+{
+	const u8 *ddc_pin_map;
+	int n_entries;
+
+	if (IS_ALDERLAKE_P(i915)) {
+		ddc_pin_map = adlp_ddc_pin_map;
+		n_entries = ARRAY_SIZE(adlp_ddc_pin_map);
+	} else if (IS_ALDERLAKE_S(i915)) {
+		ddc_pin_map = adls_ddc_pin_map;
+		n_entries = ARRAY_SIZE(adls_ddc_pin_map);
+	} else if (INTEL_PCH_TYPE(i915) >= PCH_DG1) {
+		return vbt_pin;
+	} else if (IS_ROCKETLAKE(i915) && INTEL_PCH_TYPE(i915) == PCH_TGP) {
+		ddc_pin_map = rkl_pch_tgp_ddc_pin_map;
+		n_entries = ARRAY_SIZE(rkl_pch_tgp_ddc_pin_map);
+	} else if (HAS_PCH_TGP(i915) && DISPLAY_VER(i915) == 9) {
+		ddc_pin_map = gen9bc_tgp_ddc_pin_map;
+		n_entries = ARRAY_SIZE(gen9bc_tgp_ddc_pin_map);
+	} else if (INTEL_PCH_TYPE(i915) >= PCH_ICP) {
+		ddc_pin_map = icp_ddc_pin_map;
+		n_entries = ARRAY_SIZE(icp_ddc_pin_map);
+	} else if (HAS_PCH_CNP(i915)) {
+		ddc_pin_map = cnp_ddc_pin_map;
+		n_entries = ARRAY_SIZE(cnp_ddc_pin_map);
+	} else {
+		/* Assuming direct map */
+		return vbt_pin;
+	}
+
+	if (vbt_pin < n_entries && ddc_pin_map[vbt_pin] != 0)
+		return ddc_pin_map[vbt_pin];
+
+	drm_dbg_kms(&i915->drm,
+		    "Ignoring alternate pin: VBT claims DDC pin %d, which is not valid for this platform\n",
+		    vbt_pin);
+	return 0;
+}
+
+static enum port get_port_by_ddc_pin(struct drm_i915_private *i915, u8 ddc_pin)
+{
+	const struct intel_bios_encoder_data *devdata;
+	enum port port;
+
+	if (!ddc_pin)
+		return PORT_NONE;
+
+	for_each_port(port) {
+		devdata = i915->display.vbt.ports[port];
+
+		if (devdata && ddc_pin == devdata->child.ddc_pin)
+			return port;
+	}
+
+	return PORT_NONE;
+}
+
+static void sanitize_ddc_pin(struct intel_bios_encoder_data *devdata,
+			     enum port port)
+{
+	struct drm_i915_private *i915 = devdata->i915;
+	struct child_device_config *child;
+	u8 mapped_ddc_pin;
+	enum port p;
+
+	if (!devdata->child.ddc_pin)
+		return;
+
+	mapped_ddc_pin = map_ddc_pin(i915, devdata->child.ddc_pin);
+	if (!intel_gmbus_is_valid_pin(i915, mapped_ddc_pin)) {
+		drm_dbg_kms(&i915->drm,
+			    "Port %c has invalid DDC pin %d, "
+			    "sticking to defaults\n",
+			    port_name(port), mapped_ddc_pin);
+		devdata->child.ddc_pin = 0;
+		return;
+	}
+
+	p = get_port_by_ddc_pin(i915, devdata->child.ddc_pin);
+	if (p == PORT_NONE)
+		return;
+
+	drm_dbg_kms(&i915->drm,
+		    "port %c trying to use the same DDC pin (0x%x) as port %c, "
+		    "disabling port %c DVI/HDMI support\n",
+		    port_name(port), mapped_ddc_pin,
+		    port_name(p), port_name(p));
+
+	/*
+	 * If we have multiple ports supposedly sharing the pin, then dvi/hdmi
+	 * couldn't exist on the shared port. Otherwise they share the same ddc
+	 * pin and system couldn't communicate with them separately.
+	 *
+	 * Give inverse child device order the priority, last one wins. Yes,
+	 * there are real machines (eg. Asrock B250M-HDV) where VBT has both
+	 * port A and port E with the same AUX ch and we must pick port E :(
+	 */
+	child = &i915->display.vbt.ports[p]->child;
+
+	child->device_type &= ~DEVICE_TYPE_TMDS_DVI_SIGNALING;
+	child->device_type |= DEVICE_TYPE_NOT_HDMI_OUTPUT;
+
+	child->ddc_pin = 0;
+}
+
+static enum port get_port_by_aux_ch(struct drm_i915_private *i915, u8 aux_ch)
+{
+	const struct intel_bios_encoder_data *devdata;
+	enum port port;
+
+	if (!aux_ch)
+		return PORT_NONE;
+
+	for_each_port(port) {
+		devdata = i915->display.vbt.ports[port];
+
+		if (devdata && aux_ch == devdata->child.aux_channel)
+			return port;
+	}
+
+	return PORT_NONE;
+}
+
+static void sanitize_aux_ch(struct intel_bios_encoder_data *devdata,
+			    enum port port)
+{
+	struct drm_i915_private *i915 = devdata->i915;
+	struct child_device_config *child;
+	enum port p;
+
+	p = get_port_by_aux_ch(i915, devdata->child.aux_channel);
+	if (p == PORT_NONE)
+		return;
+
+	drm_dbg_kms(&i915->drm,
+		    "port %c trying to use the same AUX CH (0x%x) as port %c, "
+		    "disabling port %c DP support\n",
+		    port_name(port), devdata->child.aux_channel,
+		    port_name(p), port_name(p));
+
+	/*
+	 * If we have multiple ports supposedly sharing the aux channel, then DP
+	 * couldn't exist on the shared port. Otherwise they share the same aux
+	 * channel and system couldn't communicate with them separately.
+	 *
+	 * Give inverse child device order the priority, last one wins. Yes,
+	 * there are real machines (eg. Asrock B250M-HDV) where VBT has both
+	 * port A and port E with the same AUX ch and we must pick port E :(
+	 */
+	child = &i915->display.vbt.ports[p]->child;
+
+	child->device_type &= ~DEVICE_TYPE_DISPLAYPORT_OUTPUT;
+	child->aux_channel = 0;
+}
+
+static u8 dvo_port_type(u8 dvo_port)
+{
+	switch (dvo_port) {
+	case DVO_PORT_HDMIA:
+	case DVO_PORT_HDMIB:
+	case DVO_PORT_HDMIC:
+	case DVO_PORT_HDMID:
+	case DVO_PORT_HDMIE:
+	case DVO_PORT_HDMIF:
+	case DVO_PORT_HDMIG:
+	case DVO_PORT_HDMIH:
+	case DVO_PORT_HDMII:
+		return DVO_PORT_HDMIA;
+	case DVO_PORT_DPA:
+	case DVO_PORT_DPB:
+	case DVO_PORT_DPC:
+	case DVO_PORT_DPD:
+	case DVO_PORT_DPE:
+	case DVO_PORT_DPF:
+	case DVO_PORT_DPG:
+	case DVO_PORT_DPH:
+	case DVO_PORT_DPI:
+		return DVO_PORT_DPA;
+	case DVO_PORT_MIPIA:
+	case DVO_PORT_MIPIB:
+	case DVO_PORT_MIPIC:
+	case DVO_PORT_MIPID:
+		return DVO_PORT_MIPIA;
+	default:
+		return dvo_port;
+	}
+}
+
+static enum port __dvo_port_to_port(int n_ports, int n_dvo,
+				    const int port_mapping[][3], u8 dvo_port)
+{
+	enum port port;
+	int i;
+
+	for (port = PORT_A; port < n_ports; port++) {
+		for (i = 0; i < n_dvo; i++) {
+			if (port_mapping[port][i] == -1)
+				break;
+
+			if (dvo_port == port_mapping[port][i])
+				return port;
+		}
+	}
+
+	return PORT_NONE;
+}
+
+static enum port dvo_port_to_port(struct drm_i915_private *i915,
+				  u8 dvo_port)
+{
+	/*
+	 * Each DDI port can have more than one value on the "DVO Port" field,
+	 * so look for all the possible values for each port.
+	 */
+	static const int port_mapping[][3] = {
+		[PORT_A] = { DVO_PORT_HDMIA, DVO_PORT_DPA, -1 },
+		[PORT_B] = { DVO_PORT_HDMIB, DVO_PORT_DPB, -1 },
+		[PORT_C] = { DVO_PORT_HDMIC, DVO_PORT_DPC, -1 },
+		[PORT_D] = { DVO_PORT_HDMID, DVO_PORT_DPD, -1 },
+		[PORT_E] = { DVO_PORT_HDMIE, DVO_PORT_DPE, DVO_PORT_CRT },
+		[PORT_F] = { DVO_PORT_HDMIF, DVO_PORT_DPF, -1 },
+		[PORT_G] = { DVO_PORT_HDMIG, DVO_PORT_DPG, -1 },
+		[PORT_H] = { DVO_PORT_HDMIH, DVO_PORT_DPH, -1 },
+		[PORT_I] = { DVO_PORT_HDMII, DVO_PORT_DPI, -1 },
+	};
+	/*
+	 * RKL VBT uses PHY based mapping. Combo PHYs A,B,C,D
+	 * map to DDI A,B,TC1,TC2 respectively.
+	 */
+	static const int rkl_port_mapping[][3] = {
+		[PORT_A] = { DVO_PORT_HDMIA, DVO_PORT_DPA, -1 },
+		[PORT_B] = { DVO_PORT_HDMIB, DVO_PORT_DPB, -1 },
+		[PORT_C] = { -1 },
+		[PORT_TC1] = { DVO_PORT_HDMIC, DVO_PORT_DPC, -1 },
+		[PORT_TC2] = { DVO_PORT_HDMID, DVO_PORT_DPD, -1 },
+	};
+	/*
+	 * Alderlake S ports used in the driver are PORT_A, PORT_D, PORT_E,
+	 * PORT_F and PORT_G, we need to map that to correct VBT sections.
+	 */
+	static const int adls_port_mapping[][3] = {
+		[PORT_A] = { DVO_PORT_HDMIA, DVO_PORT_DPA, -1 },
+		[PORT_B] = { -1 },
+		[PORT_C] = { -1 },
+		[PORT_TC1] = { DVO_PORT_HDMIB, DVO_PORT_DPB, -1 },
+		[PORT_TC2] = { DVO_PORT_HDMIC, DVO_PORT_DPC, -1 },
+		[PORT_TC3] = { DVO_PORT_HDMID, DVO_PORT_DPD, -1 },
+		[PORT_TC4] = { DVO_PORT_HDMIE, DVO_PORT_DPE, -1 },
+	};
+	static const int xelpd_port_mapping[][3] = {
+		[PORT_A] = { DVO_PORT_HDMIA, DVO_PORT_DPA, -1 },
+		[PORT_B] = { DVO_PORT_HDMIB, DVO_PORT_DPB, -1 },
+		[PORT_C] = { DVO_PORT_HDMIC, DVO_PORT_DPC, -1 },
+		[PORT_D_XELPD] = { DVO_PORT_HDMID, DVO_PORT_DPD, -1 },
+		[PORT_E_XELPD] = { DVO_PORT_HDMIE, DVO_PORT_DPE, -1 },
+		[PORT_TC1] = { DVO_PORT_HDMIF, DVO_PORT_DPF, -1 },
+		[PORT_TC2] = { DVO_PORT_HDMIG, DVO_PORT_DPG, -1 },
+		[PORT_TC3] = { DVO_PORT_HDMIH, DVO_PORT_DPH, -1 },
+		[PORT_TC4] = { DVO_PORT_HDMII, DVO_PORT_DPI, -1 },
+	};
+
+	if (DISPLAY_VER(i915) >= 13)
+		return __dvo_port_to_port(ARRAY_SIZE(xelpd_port_mapping),
+					  ARRAY_SIZE(xelpd_port_mapping[0]),
+					  xelpd_port_mapping,
+					  dvo_port);
+	else if (IS_ALDERLAKE_S(i915))
+		return __dvo_port_to_port(ARRAY_SIZE(adls_port_mapping),
+					  ARRAY_SIZE(adls_port_mapping[0]),
+					  adls_port_mapping,
+					  dvo_port);
+	else if (IS_DG1(i915) || IS_ROCKETLAKE(i915))
+		return __dvo_port_to_port(ARRAY_SIZE(rkl_port_mapping),
+					  ARRAY_SIZE(rkl_port_mapping[0]),
+					  rkl_port_mapping,
+					  dvo_port);
+	else
+		return __dvo_port_to_port(ARRAY_SIZE(port_mapping),
+					  ARRAY_SIZE(port_mapping[0]),
+					  port_mapping,
+					  dvo_port);
+}
+
+static enum port
+dsi_dvo_port_to_port(struct drm_i915_private *i915, u8 dvo_port)
+{
+	switch (dvo_port) {
+	case DVO_PORT_MIPIA:
+		return PORT_A;
+	case DVO_PORT_MIPIC:
+		if (DISPLAY_VER(i915) >= 11)
+			return PORT_B;
+		else
+			return PORT_C;
+	default:
+		return PORT_NONE;
+	}
+}
+
+static int parse_bdb_230_dp_max_link_rate(const int vbt_max_link_rate)
+{
+	switch (vbt_max_link_rate) {
+	default:
+	case BDB_230_VBT_DP_MAX_LINK_RATE_DEF:
+		return 0;
+	case BDB_230_VBT_DP_MAX_LINK_RATE_UHBR20:
+		return 2000000;
+	case BDB_230_VBT_DP_MAX_LINK_RATE_UHBR13P5:
+		return 1350000;
+	case BDB_230_VBT_DP_MAX_LINK_RATE_UHBR10:
+		return 1000000;
+	case BDB_230_VBT_DP_MAX_LINK_RATE_HBR3:
+		return 810000;
+	case BDB_230_VBT_DP_MAX_LINK_RATE_HBR2:
+		return 540000;
+	case BDB_230_VBT_DP_MAX_LINK_RATE_HBR:
+		return 270000;
+	case BDB_230_VBT_DP_MAX_LINK_RATE_LBR:
+		return 162000;
+	}
+}
+
+static int parse_bdb_216_dp_max_link_rate(const int vbt_max_link_rate)
+{
+	switch (vbt_max_link_rate) {
+	default:
+	case BDB_216_VBT_DP_MAX_LINK_RATE_HBR3:
+		return 810000;
+	case BDB_216_VBT_DP_MAX_LINK_RATE_HBR2:
+		return 540000;
+	case BDB_216_VBT_DP_MAX_LINK_RATE_HBR:
+		return 270000;
+	case BDB_216_VBT_DP_MAX_LINK_RATE_LBR:
+		return 162000;
+	}
+}
+
+static int _intel_bios_dp_max_link_rate(const struct intel_bios_encoder_data *devdata)
+{
+	if (!devdata || devdata->i915->display.vbt.version < 216)
+		return 0;
+
+	if (devdata->i915->display.vbt.version >= 230)
+		return parse_bdb_230_dp_max_link_rate(devdata->child.dp_max_link_rate);
+	else
+		return parse_bdb_216_dp_max_link_rate(devdata->child.dp_max_link_rate);
+}
+
+static int _intel_bios_dp_max_lane_count(const struct intel_bios_encoder_data *devdata)
+{
+	if (!devdata || devdata->i915->display.vbt.version < 244)
+		return 0;
+
+	return devdata->child.dp_max_lane_count + 1;
+}
+
+static void sanitize_device_type(struct intel_bios_encoder_data *devdata,
+				 enum port port)
+{
+	struct drm_i915_private *i915 = devdata->i915;
+	bool is_hdmi;
+
+	if (port != PORT_A || DISPLAY_VER(i915) >= 12)
+		return;
+
+	if (!intel_bios_encoder_supports_dvi(devdata))
+		return;
+
+	is_hdmi = intel_bios_encoder_supports_hdmi(devdata);
+
+	drm_dbg_kms(&i915->drm, "VBT claims port A supports DVI%s, ignoring\n",
+		    is_hdmi ? "/HDMI" : "");
+
+	devdata->child.device_type &= ~DEVICE_TYPE_TMDS_DVI_SIGNALING;
+	devdata->child.device_type |= DEVICE_TYPE_NOT_HDMI_OUTPUT;
+}
+
+static bool
+intel_bios_encoder_supports_crt(const struct intel_bios_encoder_data *devdata)
+{
+	return devdata->child.device_type & DEVICE_TYPE_ANALOG_OUTPUT;
+}
+
+bool
+intel_bios_encoder_supports_dvi(const struct intel_bios_encoder_data *devdata)
+{
+	return devdata->child.device_type & DEVICE_TYPE_TMDS_DVI_SIGNALING;
+}
+
+bool
+intel_bios_encoder_supports_hdmi(const struct intel_bios_encoder_data *devdata)
+{
+	return intel_bios_encoder_supports_dvi(devdata) &&
+		(devdata->child.device_type & DEVICE_TYPE_NOT_HDMI_OUTPUT) == 0;
+}
+
+bool
+intel_bios_encoder_supports_dp(const struct intel_bios_encoder_data *devdata)
+{
+	return devdata->child.device_type & DEVICE_TYPE_DISPLAYPORT_OUTPUT;
+}
+
+static bool
+intel_bios_encoder_supports_edp(const struct intel_bios_encoder_data *devdata)
+{
+	return intel_bios_encoder_supports_dp(devdata) &&
+		devdata->child.device_type & DEVICE_TYPE_INTERNAL_CONNECTOR;
+}
+
+static bool
+intel_bios_encoder_supports_dsi(const struct intel_bios_encoder_data *devdata)
+{
+	return devdata->child.device_type & DEVICE_TYPE_MIPI_OUTPUT;
+}
+
+static int _intel_bios_hdmi_level_shift(const struct intel_bios_encoder_data *devdata)
+{
+	if (!devdata || devdata->i915->display.vbt.version < 158)
+		return -1;
+
+	return devdata->child.hdmi_level_shifter_value;
+}
+
+static int _intel_bios_max_tmds_clock(const struct intel_bios_encoder_data *devdata)
+{
+	if (!devdata || devdata->i915->display.vbt.version < 204)
+		return 0;
+
+	switch (devdata->child.hdmi_max_data_rate) {
+	default:
+		MISSING_CASE(devdata->child.hdmi_max_data_rate);
+		fallthrough;
+	case HDMI_MAX_DATA_RATE_PLATFORM:
+		return 0;
+	case HDMI_MAX_DATA_RATE_594:
+		return 594000;
+	case HDMI_MAX_DATA_RATE_340:
+		return 340000;
+	case HDMI_MAX_DATA_RATE_300:
+		return 300000;
+	case HDMI_MAX_DATA_RATE_297:
+		return 297000;
+	case HDMI_MAX_DATA_RATE_165:
+		return 165000;
+	}
+}
+
+static bool is_port_valid(struct drm_i915_private *i915, enum port port)
+{
+	/*
+	 * On some ICL SKUs port F is not present, but broken VBTs mark
+	 * the port as present. Only try to initialize port F for the
+	 * SKUs that may actually have it.
+	 */
+	if (port == PORT_F && IS_ICELAKE(i915))
+		return IS_ICL_WITH_PORT_F(i915);
+
+	return true;
+}
+
+static void print_ddi_port(const struct intel_bios_encoder_data *devdata,
+			   enum port port)
+{
+	struct drm_i915_private *i915 = devdata->i915;
+	const struct child_device_config *child = &devdata->child;
+	bool is_dvi, is_hdmi, is_dp, is_edp, is_dsi, is_crt, supports_typec_usb, supports_tbt;
+	int dp_boost_level, dp_max_link_rate, hdmi_boost_level, hdmi_level_shift, max_tmds_clock;
+
+	is_dvi = intel_bios_encoder_supports_dvi(devdata);
+	is_dp = intel_bios_encoder_supports_dp(devdata);
+	is_crt = intel_bios_encoder_supports_crt(devdata);
+	is_hdmi = intel_bios_encoder_supports_hdmi(devdata);
+	is_edp = intel_bios_encoder_supports_edp(devdata);
+	is_dsi = intel_bios_encoder_supports_dsi(devdata);
+
+	supports_typec_usb = intel_bios_encoder_supports_typec_usb(devdata);
+	supports_tbt = intel_bios_encoder_supports_tbt(devdata);
+
+	drm_dbg_kms(&i915->drm,
+		    "Port %c VBT info: CRT:%d DVI:%d HDMI:%d DP:%d eDP:%d DSI:%d LSPCON:%d USB-Type-C:%d TBT:%d DSC:%d\n",
+		    port_name(port), is_crt, is_dvi, is_hdmi, is_dp, is_edp, is_dsi,
+		    HAS_LSPCON(i915) && child->lspcon,
+		    supports_typec_usb, supports_tbt,
+		    devdata->dsc != NULL);
+
+	hdmi_level_shift = _intel_bios_hdmi_level_shift(devdata);
+	if (hdmi_level_shift >= 0) {
+		drm_dbg_kms(&i915->drm,
+			    "Port %c VBT HDMI level shift: %d\n",
+			    port_name(port), hdmi_level_shift);
+	}
+
+	max_tmds_clock = _intel_bios_max_tmds_clock(devdata);
+	if (max_tmds_clock)
+		drm_dbg_kms(&i915->drm,
+			    "Port %c VBT HDMI max TMDS clock: %d kHz\n",
+			    port_name(port), max_tmds_clock);
+
+	/* I_boost config for SKL and above */
+	dp_boost_level = intel_bios_encoder_dp_boost_level(devdata);
+	if (dp_boost_level)
+		drm_dbg_kms(&i915->drm,
+			    "Port %c VBT (e)DP boost level: %d\n",
+			    port_name(port), dp_boost_level);
+
+	hdmi_boost_level = intel_bios_encoder_hdmi_boost_level(devdata);
+	if (hdmi_boost_level)
+		drm_dbg_kms(&i915->drm,
+			    "Port %c VBT HDMI boost level: %d\n",
+			    port_name(port), hdmi_boost_level);
+
+	dp_max_link_rate = _intel_bios_dp_max_link_rate(devdata);
+	if (dp_max_link_rate)
+		drm_dbg_kms(&i915->drm,
+			    "Port %c VBT DP max link rate: %d\n",
+			    port_name(port), dp_max_link_rate);
+}
+
+static void parse_ddi_port(struct intel_bios_encoder_data *devdata)
+{
+	struct drm_i915_private *i915 = devdata->i915;
+	const struct child_device_config *child = &devdata->child;
+	enum port port;
+
+	port = dvo_port_to_port(i915, child->dvo_port);
+	if (port == PORT_NONE && DISPLAY_VER(i915) >= 11)
+		port = dsi_dvo_port_to_port(i915, child->dvo_port);
+	if (port == PORT_NONE)
+		return;
+
+	if (!is_port_valid(i915, port)) {
+		drm_dbg_kms(&i915->drm,
+			    "VBT reports port %c as supported, but that can't be true: skipping\n",
+			    port_name(port));
+		return;
+	}
+
+	if (i915->display.vbt.ports[port]) {
+		drm_dbg_kms(&i915->drm,
+			    "More than one child device for port %c in VBT, using the first.\n",
+			    port_name(port));
+		return;
+	}
+
+	sanitize_device_type(devdata, port);
+
+	if (intel_bios_encoder_supports_dvi(devdata))
+		sanitize_ddc_pin(devdata, port);
+
+	if (intel_bios_encoder_supports_dp(devdata))
+		sanitize_aux_ch(devdata, port);
+
+	i915->display.vbt.ports[port] = devdata;
+}
+
+static bool has_ddi_port_info(struct drm_i915_private *i915)
+{
+	return DISPLAY_VER(i915) >= 5 || IS_G4X(i915);
+}
+
+static void parse_ddi_ports(struct drm_i915_private *i915)
+{
+	struct intel_bios_encoder_data *devdata;
+	enum port port;
+
+	if (!has_ddi_port_info(i915))
+		return;
+
+	list_for_each_entry(devdata, &i915->display.vbt.display_devices, node)
+		parse_ddi_port(devdata);
+
+	for_each_port(port) {
+		if (i915->display.vbt.ports[port])
+			print_ddi_port(i915->display.vbt.ports[port], port);
+	}
+}
+
+static void
+parse_general_definitions(struct drm_i915_private *i915)
+{
+	const struct bdb_general_definitions *defs;
+	struct intel_bios_encoder_data *devdata;
+	const struct child_device_config *child;
+	int i, child_device_num;
+	u8 expected_size;
+	u16 block_size;
+	int bus_pin;
+
+	defs = find_section(i915, BDB_GENERAL_DEFINITIONS);
+	if (!defs) {
+		drm_dbg_kms(&i915->drm,
+			    "No general definition block is found, no devices defined.\n");
+		return;
+	}
+
+	block_size = get_blocksize(defs);
+	if (block_size < sizeof(*defs)) {
+		drm_dbg_kms(&i915->drm,
+			    "General definitions block too small (%u)\n",
+			    block_size);
+		return;
+	}
+
+	bus_pin = defs->crt_ddc_gmbus_pin;
+	drm_dbg_kms(&i915->drm, "crt_ddc_bus_pin: %d\n", bus_pin);
+	if (intel_gmbus_is_valid_pin(i915, bus_pin))
+		i915->display.vbt.crt_ddc_pin = bus_pin;
+
+	if (i915->display.vbt.version < 106) {
+		expected_size = 22;
+	} else if (i915->display.vbt.version < 111) {
+		expected_size = 27;
+	} else if (i915->display.vbt.version < 195) {
+		expected_size = LEGACY_CHILD_DEVICE_CONFIG_SIZE;
+	} else if (i915->display.vbt.version == 195) {
+		expected_size = 37;
+	} else if (i915->display.vbt.version <= 215) {
+		expected_size = 38;
+	} else if (i915->display.vbt.version <= 237) {
+		expected_size = 39;
+	} else {
+		expected_size = sizeof(*child);
+		BUILD_BUG_ON(sizeof(*child) < 39);
+		drm_dbg(&i915->drm,
+			"Expected child device config size for VBT version %u not known; assuming %u\n",
+			i915->display.vbt.version, expected_size);
+	}
+
+	/* Flag an error for unexpected size, but continue anyway. */
+	if (defs->child_dev_size != expected_size)
+		drm_err(&i915->drm,
+			"Unexpected child device config size %u (expected %u for VBT version %u)\n",
+			defs->child_dev_size, expected_size, i915->display.vbt.version);
+
+	/* The legacy sized child device config is the minimum we need. */
+	if (defs->child_dev_size < LEGACY_CHILD_DEVICE_CONFIG_SIZE) {
+		drm_dbg_kms(&i915->drm,
+			    "Child device config size %u is too small.\n",
+			    defs->child_dev_size);
+		return;
+	}
+
+	/* get the number of child device */
+	child_device_num = (block_size - sizeof(*defs)) / defs->child_dev_size;
+
+	for (i = 0; i < child_device_num; i++) {
+		child = child_device_ptr(defs, i);
+		if (!child->device_type)
+			continue;
+
+		drm_dbg_kms(&i915->drm,
+			    "Found VBT child device with type 0x%x\n",
+			    child->device_type);
+
+		devdata = kzalloc(sizeof(*devdata), GFP_KERNEL);
+		if (!devdata)
+			break;
+
+		devdata->i915 = i915;
+
+		/*
+		 * Copy as much as we know (sizeof) and is available
+		 * (child_dev_size) of the child device config. Accessing the
+		 * data must depend on VBT version.
+		 */
+		memcpy(&devdata->child, child,
+		       min_t(size_t, defs->child_dev_size, sizeof(*child)));
+
+		list_add_tail(&devdata->node, &i915->display.vbt.display_devices);
+	}
+
+	if (list_empty(&i915->display.vbt.display_devices))
+		drm_dbg_kms(&i915->drm,
+			    "no child dev is parsed from VBT\n");
+}
+
+/* Common defaults which may be overridden by VBT. */
+static void
+init_vbt_defaults(struct drm_i915_private *i915)
+{
+	i915->display.vbt.crt_ddc_pin = GMBUS_PIN_VGADDC;
+
+	/* general features */
+	i915->display.vbt.int_tv_support = 1;
+	i915->display.vbt.int_crt_support = 1;
+
+	/* driver features */
+	i915->display.vbt.int_lvds_support = 1;
+
+	/* Default to using SSC */
+	i915->display.vbt.lvds_use_ssc = 1;
+	/*
+	 * Core/SandyBridge/IvyBridge use alternative (120MHz) reference
+	 * clock for LVDS.
+	 */
+	i915->display.vbt.lvds_ssc_freq = intel_bios_ssc_frequency(i915,
+								   !HAS_PCH_SPLIT(i915));
+	drm_dbg_kms(&i915->drm, "Set default to SSC at %d kHz\n",
+		    i915->display.vbt.lvds_ssc_freq);
+}
+
+/* Common defaults which may be overridden by VBT. */
+static void
+init_vbt_panel_defaults(struct intel_panel *panel)
+{
+	/* Default to having backlight */
+	panel->vbt.backlight.present = true;
+
+	/* LFP panel data */
+	panel->vbt.lvds_dither = true;
+}
+
+/* Defaults to initialize only if there is no VBT. */
+static void
+init_vbt_missing_defaults(struct drm_i915_private *i915)
+{
+	enum port port;
+	int ports = BIT(PORT_A) | BIT(PORT_B) | BIT(PORT_C) |
+		    BIT(PORT_D) | BIT(PORT_E) | BIT(PORT_F);
+
+	if (!HAS_DDI(i915) && !IS_CHERRYVIEW(i915))
+		return;
+
+	for_each_port_masked(port, ports) {
+		struct intel_bios_encoder_data *devdata;
+		struct child_device_config *child;
+		enum phy phy = intel_port_to_phy(i915, port);
+
+		/*
+		 * VBT has the TypeC mode (native,TBT/USB) and we don't want
+		 * to detect it.
+		 */
+		if (intel_phy_is_tc(i915, phy))
+			continue;
+
+		/* Create fake child device config */
+		devdata = kzalloc(sizeof(*devdata), GFP_KERNEL);
+		if (!devdata)
+			break;
+
+		devdata->i915 = i915;
+		child = &devdata->child;
+
+		if (port == PORT_F)
+			child->dvo_port = DVO_PORT_HDMIF;
+		else if (port == PORT_E)
+			child->dvo_port = DVO_PORT_HDMIE;
+		else
+			child->dvo_port = DVO_PORT_HDMIA + port;
+
+		if (port != PORT_A && port != PORT_E)
+			child->device_type |= DEVICE_TYPE_TMDS_DVI_SIGNALING;
+
+		if (port != PORT_E)
+			child->device_type |= DEVICE_TYPE_DISPLAYPORT_OUTPUT;
+
+		if (port == PORT_A)
+			child->device_type |= DEVICE_TYPE_INTERNAL_CONNECTOR;
+
+		list_add_tail(&devdata->node, &i915->display.vbt.display_devices);
+
+		drm_dbg_kms(&i915->drm,
+			    "Generating default VBT child device with type 0x04%x on port %c\n",
+			    child->device_type, port_name(port));
+	}
+
+	/* Bypass some minimum baseline VBT version checks */
+	i915->display.vbt.version = 155;
+}
+
+static const struct bdb_header *get_bdb_header(const struct vbt_header *vbt)
+{
+	const void *_vbt = vbt;
+
+	return _vbt + vbt->bdb_offset;
+}
+
+/**
+ * intel_bios_is_valid_vbt - does the given buffer contain a valid VBT
+ * @buf:	pointer to a buffer to validate
+ * @size:	size of the buffer
+ *
+ * Returns true on valid VBT.
+ */
+bool intel_bios_is_valid_vbt(const void *buf, size_t size)
+{
+	const struct vbt_header *vbt = buf;
+	const struct bdb_header *bdb;
+
+	if (!vbt)
+		return false;
+
+	if (sizeof(struct vbt_header) > size) {
+		DRM_DEBUG_DRIVER("VBT header incomplete\n");
+		return false;
+	}
+
+	if (memcmp(vbt->signature, "$VBT", 4)) {
+		DRM_DEBUG_DRIVER("VBT invalid signature\n");
+		return false;
+	}
+
+	if (vbt->vbt_size > size) {
+		DRM_DEBUG_DRIVER("VBT incomplete (vbt_size overflows)\n");
+		return false;
+	}
+
+	size = vbt->vbt_size;
+
+	if (range_overflows_t(size_t,
+			      vbt->bdb_offset,
+			      sizeof(struct bdb_header),
+			      size)) {
+		DRM_DEBUG_DRIVER("BDB header incomplete\n");
+		return false;
+	}
+
+	bdb = get_bdb_header(vbt);
+	if (range_overflows_t(size_t, vbt->bdb_offset, bdb->bdb_size, size)) {
+		DRM_DEBUG_DRIVER("BDB incomplete\n");
+		return false;
+	}
+
+	return vbt;
+}
+
+static struct vbt_header *spi_oprom_get_vbt(struct drm_i915_private *i915)
+{
+	u32 count, data, found, store = 0;
+	u32 static_region, oprom_offset;
+	u32 oprom_size = 0x200000;
+	u16 vbt_size;
+	u32 *vbt;
+
+	static_region = intel_uncore_read(&i915->uncore, SPI_STATIC_REGIONS);
+	static_region &= OPTIONROM_SPI_REGIONID_MASK;
+	intel_uncore_write(&i915->uncore, PRIMARY_SPI_REGIONID, static_region);
+
+	oprom_offset = intel_uncore_read(&i915->uncore, OROM_OFFSET);
+	oprom_offset &= OROM_OFFSET_MASK;
+
+	for (count = 0; count < oprom_size; count += 4) {
+		intel_uncore_write(&i915->uncore, PRIMARY_SPI_ADDRESS, oprom_offset + count);
+		data = intel_uncore_read(&i915->uncore, PRIMARY_SPI_TRIGGER);
+
+		if (data == *((const u32 *)"$VBT")) {
+			found = oprom_offset + count;
+			break;
+		}
+	}
+
+	if (count >= oprom_size)
+		goto err_not_found;
+
+	/* Get VBT size and allocate space for the VBT */
+	intel_uncore_write(&i915->uncore, PRIMARY_SPI_ADDRESS, found +
+		   offsetof(struct vbt_header, vbt_size));
+	vbt_size = intel_uncore_read(&i915->uncore, PRIMARY_SPI_TRIGGER);
+	vbt_size &= 0xffff;
+
+	vbt = kzalloc(round_up(vbt_size, 4), GFP_KERNEL);
+	if (!vbt)
+		goto err_not_found;
+
+	for (count = 0; count < vbt_size; count += 4) {
+		intel_uncore_write(&i915->uncore, PRIMARY_SPI_ADDRESS, found + count);
+		data = intel_uncore_read(&i915->uncore, PRIMARY_SPI_TRIGGER);
+		*(vbt + store++) = data;
+	}
+
+	if (!intel_bios_is_valid_vbt(vbt, vbt_size))
+		goto err_free_vbt;
+
+	drm_dbg_kms(&i915->drm, "Found valid VBT in SPI flash\n");
+
+	return (struct vbt_header *)vbt;
+
+err_free_vbt:
+	kfree(vbt);
+err_not_found:
+	return NULL;
+}
+
+static struct vbt_header *oprom_get_vbt(struct drm_i915_private *i915)
+{
+	struct pci_dev *pdev = to_pci_dev(i915->drm.dev);
+	void __iomem *p = NULL, *oprom;
+	struct vbt_header *vbt;
+	u16 vbt_size;
+	size_t i, size;
+
+	oprom = pci_map_rom(pdev, &size);
+	if (!oprom)
+		return NULL;
+
+	/* Scour memory looking for the VBT signature. */
+	for (i = 0; i + 4 < size; i += 4) {
+		if (ioread32(oprom + i) != *((const u32 *)"$VBT"))
+			continue;
+
+		p = oprom + i;
+		size -= i;
+		break;
+	}
+
+	if (!p)
+		goto err_unmap_oprom;
+
+	if (sizeof(struct vbt_header) > size) {
+		drm_dbg(&i915->drm, "VBT header incomplete\n");
+		goto err_unmap_oprom;
+	}
+
+	vbt_size = ioread16(p + offsetof(struct vbt_header, vbt_size));
+	if (vbt_size > size) {
+		drm_dbg(&i915->drm,
+			"VBT incomplete (vbt_size overflows)\n");
+		goto err_unmap_oprom;
+	}
+
+	/* The rest will be validated by intel_bios_is_valid_vbt() */
+	vbt = kmalloc(vbt_size, GFP_KERNEL);
+	if (!vbt)
+		goto err_unmap_oprom;
+
+	memcpy_fromio(vbt, p, vbt_size);
+
+	if (!intel_bios_is_valid_vbt(vbt, vbt_size))
+		goto err_free_vbt;
+
+	pci_unmap_rom(pdev, oprom);
+
+	drm_dbg_kms(&i915->drm, "Found valid VBT in PCI ROM\n");
+
+	return vbt;
+
+err_free_vbt:
+	kfree(vbt);
+err_unmap_oprom:
+	pci_unmap_rom(pdev, oprom);
+
+	return NULL;
+}
+
+/**
+ * intel_bios_init - find VBT and initialize settings from the BIOS
+ * @i915: i915 device instance
+ *
+ * Parse and initialize settings from the Video BIOS Tables (VBT). If the VBT
+ * was not found in ACPI OpRegion, try to find it in PCI ROM first. Also
+ * initialize some defaults if the VBT is not present at all.
+ */
+void intel_bios_init(struct drm_i915_private *i915)
+{
+	const struct vbt_header *vbt = i915->display.opregion.vbt;
+	struct vbt_header *oprom_vbt = NULL;
+	const struct bdb_header *bdb;
+
+	INIT_LIST_HEAD(&i915->display.vbt.display_devices);
+	INIT_LIST_HEAD(&i915->display.vbt.bdb_blocks);
+
+	if (!HAS_DISPLAY(i915)) {
+		drm_dbg_kms(&i915->drm,
+			    "Skipping VBT init due to disabled display.\n");
+		return;
+	}
+
+	init_vbt_defaults(i915);
+
+	/*
+	 * If the OpRegion does not have VBT, look in SPI flash through MMIO or
+	 * PCI mapping
+	 */
+	if (!vbt && IS_DGFX(i915)) {
+		oprom_vbt = spi_oprom_get_vbt(i915);
+		vbt = oprom_vbt;
+	}
+
+	if (!vbt) {
+		oprom_vbt = oprom_get_vbt(i915);
+		vbt = oprom_vbt;
+	}
+
+	if (!vbt)
+		goto out;
+
+	bdb = get_bdb_header(vbt);
+	i915->display.vbt.version = bdb->version;
+
+	drm_dbg_kms(&i915->drm,
+		    "VBT signature \"%.*s\", BDB version %d\n",
+		    (int)sizeof(vbt->signature), vbt->signature, i915->display.vbt.version);
+
+	init_bdb_blocks(i915, bdb);
+
+	/* Grab useful general definitions */
+	parse_general_features(i915);
+	parse_general_definitions(i915);
+	parse_driver_features(i915);
+
+	/* Depends on child device list */
+	parse_compression_parameters(i915);
+
+out:
+	if (!vbt) {
+		drm_info(&i915->drm,
+			 "Failed to find VBIOS tables (VBT)\n");
+		init_vbt_missing_defaults(i915);
+	}
+
+	/* Further processing on pre-parsed or generated child device data */
+	parse_sdvo_device_mapping(i915);
+	parse_ddi_ports(i915);
+
+	kfree(oprom_vbt);
+}
+
+static void intel_bios_init_panel(struct drm_i915_private *i915,
+				  struct intel_panel *panel,
+				  const struct intel_bios_encoder_data *devdata,
+				  const struct edid *edid,
+				  bool use_fallback)
+{
+	/* already have it? */
+	if (panel->vbt.panel_type >= 0) {
+		drm_WARN_ON(&i915->drm, !use_fallback);
+		return;
+	}
+
+	panel->vbt.panel_type = get_panel_type(i915, devdata,
+					       edid, use_fallback);
+	if (panel->vbt.panel_type < 0) {
+		drm_WARN_ON(&i915->drm, use_fallback);
+		return;
+	}
+
+	init_vbt_panel_defaults(panel);
+
+	parse_panel_options(i915, panel);
+	parse_generic_dtd(i915, panel);
+	parse_lfp_data(i915, panel);
+	parse_lfp_backlight(i915, panel);
+	parse_sdvo_panel_data(i915, panel);
+	parse_panel_driver_features(i915, panel);
+	parse_power_conservation_features(i915, panel);
+	parse_edp(i915, panel);
+	parse_psr(i915, panel);
+	parse_mipi_config(i915, panel);
+	parse_mipi_sequence(i915, panel);
+}
+
+void intel_bios_init_panel_early(struct drm_i915_private *i915,
+				 struct intel_panel *panel,
+				 const struct intel_bios_encoder_data *devdata)
+{
+	intel_bios_init_panel(i915, panel, devdata, NULL, false);
+}
+
+void intel_bios_init_panel_late(struct drm_i915_private *i915,
+				struct intel_panel *panel,
+				const struct intel_bios_encoder_data *devdata,
+				const struct edid *edid)
+{
+	intel_bios_init_panel(i915, panel, devdata, edid, true);
+}
+
+/**
+ * intel_bios_driver_remove - Free any resources allocated by intel_bios_init()
+ * @i915: i915 device instance
+ */
+void intel_bios_driver_remove(struct drm_i915_private *i915)
+{
+	struct intel_bios_encoder_data *devdata, *nd;
+	struct bdb_block_entry *entry, *ne;
+
+	list_for_each_entry_safe(devdata, nd, &i915->display.vbt.display_devices, node) {
+		list_del(&devdata->node);
+		kfree(devdata->dsc);
+		kfree(devdata);
+	}
+
+	list_for_each_entry_safe(entry, ne, &i915->display.vbt.bdb_blocks, node) {
+		list_del(&entry->node);
+		kfree(entry);
+	}
+}
+
+void intel_bios_fini_panel(struct intel_panel *panel)
+{
+	kfree(panel->vbt.sdvo_lvds_vbt_mode);
+	panel->vbt.sdvo_lvds_vbt_mode = NULL;
+	kfree(panel->vbt.lfp_lvds_vbt_mode);
+	panel->vbt.lfp_lvds_vbt_mode = NULL;
+	kfree(panel->vbt.dsi.data);
+	panel->vbt.dsi.data = NULL;
+	kfree(panel->vbt.dsi.pps);
+	panel->vbt.dsi.pps = NULL;
+	kfree(panel->vbt.dsi.config);
+	panel->vbt.dsi.config = NULL;
+	kfree(panel->vbt.dsi.deassert_seq);
+	panel->vbt.dsi.deassert_seq = NULL;
+}
+
+/**
+ * intel_bios_is_tv_present - is integrated TV present in VBT
+ * @i915: i915 device instance
+ *
+ * Return true if TV is present. If no child devices were parsed from VBT,
+ * assume TV is present.
+ */
+bool intel_bios_is_tv_present(struct drm_i915_private *i915)
+{
+	const struct intel_bios_encoder_data *devdata;
+	const struct child_device_config *child;
+
+	if (!i915->display.vbt.int_tv_support)
+		return false;
+
+	if (list_empty(&i915->display.vbt.display_devices))
+		return true;
+
+	list_for_each_entry(devdata, &i915->display.vbt.display_devices, node) {
+		child = &devdata->child;
+
+		/*
+		 * If the device type is not TV, continue.
+		 */
+		switch (child->device_type) {
+		case DEVICE_TYPE_INT_TV:
+		case DEVICE_TYPE_TV:
+		case DEVICE_TYPE_TV_SVIDEO_COMPOSITE:
+			break;
+		default:
+			continue;
+		}
+		/* Only when the addin_offset is non-zero, it is regarded
+		 * as present.
+		 */
+		if (child->addin_offset)
+			return true;
+	}
+
+	return false;
+}
+
+/**
+ * intel_bios_is_lvds_present - is LVDS present in VBT
+ * @i915:	i915 device instance
+ * @i2c_pin:	i2c pin for LVDS if present
+ *
+ * Return true if LVDS is present. If no child devices were parsed from VBT,
+ * assume LVDS is present.
+ */
+bool intel_bios_is_lvds_present(struct drm_i915_private *i915, u8 *i2c_pin)
+{
+	const struct intel_bios_encoder_data *devdata;
+	const struct child_device_config *child;
+
+	if (list_empty(&i915->display.vbt.display_devices))
+		return true;
+
+	list_for_each_entry(devdata, &i915->display.vbt.display_devices, node) {
+		child = &devdata->child;
+
+		/* If the device type is not LFP, continue.
+		 * We have to check both the new identifiers as well as the
+		 * old for compatibility with some BIOSes.
+		 */
+		if (child->device_type != DEVICE_TYPE_INT_LFP &&
+		    child->device_type != DEVICE_TYPE_LFP)
+			continue;
+
+		if (intel_gmbus_is_valid_pin(i915, child->i2c_pin))
+			*i2c_pin = child->i2c_pin;
+
+		/* However, we cannot trust the BIOS writers to populate
+		 * the VBT correctly.  Since LVDS requires additional
+		 * information from AIM blocks, a non-zero addin offset is
+		 * a good indicator that the LVDS is actually present.
+		 */
+		if (child->addin_offset)
+			return true;
+
+		/* But even then some BIOS writers perform some black magic
+		 * and instantiate the device without reference to any
+		 * additional data.  Trust that if the VBT was written into
+		 * the OpRegion then they have validated the LVDS's existence.
+		 */
+		if (i915->display.opregion.vbt)
+			return true;
+	}
+
+	return false;
+}
+
+/**
+ * intel_bios_is_port_present - is the specified digital port present
+ * @i915:	i915 device instance
+ * @port:	port to check
+ *
+ * Return true if the device in %port is present.
+ */
+bool intel_bios_is_port_present(struct drm_i915_private *i915, enum port port)
+{
+	if (WARN_ON(!has_ddi_port_info(i915)))
+		return true;
+
+	return i915->display.vbt.ports[port];
+}
+
+/**
+ * intel_bios_is_port_edp - is the device in given port eDP
+ * @i915:	i915 device instance
+ * @port:	port to check
+ *
+ * Return true if the device in %port is eDP.
+ */
+bool intel_bios_is_port_edp(struct drm_i915_private *i915, enum port port)
+{
+	const struct intel_bios_encoder_data *devdata =
+		intel_bios_encoder_data_lookup(i915, port);
+
+	return devdata && intel_bios_encoder_supports_edp(devdata);
+}
+
+static bool intel_bios_encoder_supports_dp_dual_mode(const struct intel_bios_encoder_data *devdata)
+{
+	const struct child_device_config *child = &devdata->child;
+
+	if (!intel_bios_encoder_supports_dp(devdata) ||
+	    !intel_bios_encoder_supports_hdmi(devdata))
+		return false;
+
+	if (dvo_port_type(child->dvo_port) == DVO_PORT_DPA)
+		return true;
+
+	/* Only accept a HDMI dvo_port as DP++ if it has an AUX channel */
+	if (dvo_port_type(child->dvo_port) == DVO_PORT_HDMIA &&
+	    child->aux_channel != 0)
+		return true;
+
+	return false;
+}
+
+bool intel_bios_is_port_dp_dual_mode(struct drm_i915_private *i915,
+				     enum port port)
+{
+	const struct intel_bios_encoder_data *devdata =
+		intel_bios_encoder_data_lookup(i915, port);
+
+	return devdata && intel_bios_encoder_supports_dp_dual_mode(devdata);
+}
+
+/**
+ * intel_bios_is_dsi_present - is DSI present in VBT
+ * @i915:	i915 device instance
+ * @port:	port for DSI if present
+ *
+ * Return true if DSI is present, and return the port in %port.
+ */
+bool intel_bios_is_dsi_present(struct drm_i915_private *i915,
+			       enum port *port)
+{
+	const struct intel_bios_encoder_data *devdata;
+	const struct child_device_config *child;
+	u8 dvo_port;
+
+	list_for_each_entry(devdata, &i915->display.vbt.display_devices, node) {
+		child = &devdata->child;
+
+		if (!(child->device_type & DEVICE_TYPE_MIPI_OUTPUT))
+			continue;
+
+		dvo_port = child->dvo_port;
+
+		if (dsi_dvo_port_to_port(i915, dvo_port) == PORT_NONE) {
+			drm_dbg_kms(&i915->drm,
+				    "VBT has unsupported DSI port %c\n",
+				    port_name(dvo_port - DVO_PORT_MIPIA));
+			continue;
+		}
+
+		if (port)
+			*port = dsi_dvo_port_to_port(i915, dvo_port);
+		return true;
+	}
+
+	return false;
+}
+
+static void fill_dsc(struct intel_crtc_state *crtc_state,
+		     struct dsc_compression_parameters_entry *dsc,
+		     int dsc_max_bpc)
+{
+	struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config;
+	int bpc = 8;
+
+	vdsc_cfg->dsc_version_major = dsc->version_major;
+	vdsc_cfg->dsc_version_minor = dsc->version_minor;
+
+	if (dsc->support_12bpc && dsc_max_bpc >= 12)
+		bpc = 12;
+	else if (dsc->support_10bpc && dsc_max_bpc >= 10)
+		bpc = 10;
+	else if (dsc->support_8bpc && dsc_max_bpc >= 8)
+		bpc = 8;
+	else
+		DRM_DEBUG_KMS("VBT: Unsupported BPC %d for DCS\n",
+			      dsc_max_bpc);
+
+	crtc_state->pipe_bpp = bpc * 3;
+
+	crtc_state->dsc.compressed_bpp = min(crtc_state->pipe_bpp,
+					     VBT_DSC_MAX_BPP(dsc->max_bpp));
+
+	/*
+	 * FIXME: This is ugly, and slice count should take DSC engine
+	 * throughput etc. into account.
+	 *
+	 * Also, per spec DSI supports 1, 2, 3 or 4 horizontal slices.
+	 */
+	if (dsc->slices_per_line & BIT(2)) {
+		crtc_state->dsc.slice_count = 4;
+	} else if (dsc->slices_per_line & BIT(1)) {
+		crtc_state->dsc.slice_count = 2;
+	} else {
+		/* FIXME */
+		if (!(dsc->slices_per_line & BIT(0)))
+			DRM_DEBUG_KMS("VBT: Unsupported DSC slice count for DSI\n");
+
+		crtc_state->dsc.slice_count = 1;
+	}
+
+	if (crtc_state->hw.adjusted_mode.crtc_hdisplay %
+	    crtc_state->dsc.slice_count != 0)
+		DRM_DEBUG_KMS("VBT: DSC hdisplay %d not divisible by slice count %d\n",
+			      crtc_state->hw.adjusted_mode.crtc_hdisplay,
+			      crtc_state->dsc.slice_count);
+
+	/*
+	 * The VBT rc_buffer_block_size and rc_buffer_size definitions
+	 * correspond to DP 1.4 DPCD offsets 0x62 and 0x63.
+	 */
+	vdsc_cfg->rc_model_size = drm_dsc_dp_rc_buffer_size(dsc->rc_buffer_block_size,
+							    dsc->rc_buffer_size);
+
+	/* FIXME: DSI spec says bpc + 1 for this one */
+	vdsc_cfg->line_buf_depth = VBT_DSC_LINE_BUFFER_DEPTH(dsc->line_buffer_depth);
+
+	vdsc_cfg->block_pred_enable = dsc->block_prediction_enable;
+
+	vdsc_cfg->slice_height = dsc->slice_height;
+}
+
+/* FIXME: initially DSI specific */
+bool intel_bios_get_dsc_params(struct intel_encoder *encoder,
+			       struct intel_crtc_state *crtc_state,
+			       int dsc_max_bpc)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	const struct intel_bios_encoder_data *devdata;
+	const struct child_device_config *child;
+
+	list_for_each_entry(devdata, &i915->display.vbt.display_devices, node) {
+		child = &devdata->child;
+
+		if (!(child->device_type & DEVICE_TYPE_MIPI_OUTPUT))
+			continue;
+
+		if (dsi_dvo_port_to_port(i915, child->dvo_port) == encoder->port) {
+			if (!devdata->dsc)
+				return false;
+
+			if (crtc_state)
+				fill_dsc(crtc_state, devdata->dsc, dsc_max_bpc);
+
+			return true;
+		}
+	}
+
+	return false;
+}
+
+/**
+ * intel_bios_is_port_hpd_inverted - is HPD inverted for %port
+ * @i915:	i915 device instance
+ * @port:	port to check
+ *
+ * Return true if HPD should be inverted for %port.
+ */
+bool
+intel_bios_is_port_hpd_inverted(const struct drm_i915_private *i915,
+				enum port port)
+{
+	const struct intel_bios_encoder_data *devdata = i915->display.vbt.ports[port];
+
+	if (drm_WARN_ON_ONCE(&i915->drm,
+			     !IS_GEMINILAKE(i915) && !IS_BROXTON(i915)))
+		return false;
+
+	return devdata && devdata->child.hpd_invert;
+}
+
+/**
+ * intel_bios_is_lspcon_present - if LSPCON is attached on %port
+ * @i915:	i915 device instance
+ * @port:	port to check
+ *
+ * Return true if LSPCON is present on this port
+ */
+bool
+intel_bios_is_lspcon_present(const struct drm_i915_private *i915,
+			     enum port port)
+{
+	const struct intel_bios_encoder_data *devdata = i915->display.vbt.ports[port];
+
+	return HAS_LSPCON(i915) && devdata && devdata->child.lspcon;
+}
+
+/**
+ * intel_bios_is_lane_reversal_needed - if lane reversal needed on port
+ * @i915:       i915 device instance
+ * @port:       port to check
+ *
+ * Return true if port requires lane reversal
+ */
+bool
+intel_bios_is_lane_reversal_needed(const struct drm_i915_private *i915,
+				   enum port port)
+{
+	const struct intel_bios_encoder_data *devdata = i915->display.vbt.ports[port];
+
+	return devdata && devdata->child.lane_reversal;
+}
+
+enum aux_ch intel_bios_port_aux_ch(struct drm_i915_private *i915,
+				   enum port port)
+{
+	const struct intel_bios_encoder_data *devdata = i915->display.vbt.ports[port];
+	enum aux_ch aux_ch;
+
+	if (!devdata || !devdata->child.aux_channel) {
+		aux_ch = (enum aux_ch)port;
+
+		drm_dbg_kms(&i915->drm,
+			    "using AUX %c for port %c (platform default)\n",
+			    aux_ch_name(aux_ch), port_name(port));
+		return aux_ch;
+	}
+
+	/*
+	 * RKL/DG1 VBT uses PHY based mapping. Combo PHYs A,B,C,D
+	 * map to DDI A,B,TC1,TC2 respectively.
+	 *
+	 * ADL-S VBT uses PHY based mapping. Combo PHYs A,B,C,D,E
+	 * map to DDI A,TC1,TC2,TC3,TC4 respectively.
+	 */
+	switch (devdata->child.aux_channel) {
+	case DP_AUX_A:
+		aux_ch = AUX_CH_A;
+		break;
+	case DP_AUX_B:
+		if (IS_ALDERLAKE_S(i915))
+			aux_ch = AUX_CH_USBC1;
+		else
+			aux_ch = AUX_CH_B;
+		break;
+	case DP_AUX_C:
+		if (IS_ALDERLAKE_S(i915))
+			aux_ch = AUX_CH_USBC2;
+		else if (IS_DG1(i915) || IS_ROCKETLAKE(i915))
+			aux_ch = AUX_CH_USBC1;
+		else
+			aux_ch = AUX_CH_C;
+		break;
+	case DP_AUX_D:
+		if (DISPLAY_VER(i915) >= 13)
+			aux_ch = AUX_CH_D_XELPD;
+		else if (IS_ALDERLAKE_S(i915))
+			aux_ch = AUX_CH_USBC3;
+		else if (IS_DG1(i915) || IS_ROCKETLAKE(i915))
+			aux_ch = AUX_CH_USBC2;
+		else
+			aux_ch = AUX_CH_D;
+		break;
+	case DP_AUX_E:
+		if (DISPLAY_VER(i915) >= 13)
+			aux_ch = AUX_CH_E_XELPD;
+		else if (IS_ALDERLAKE_S(i915))
+			aux_ch = AUX_CH_USBC4;
+		else
+			aux_ch = AUX_CH_E;
+		break;
+	case DP_AUX_F:
+		if (DISPLAY_VER(i915) >= 13)
+			aux_ch = AUX_CH_USBC1;
+		else
+			aux_ch = AUX_CH_F;
+		break;
+	case DP_AUX_G:
+		if (DISPLAY_VER(i915) >= 13)
+			aux_ch = AUX_CH_USBC2;
+		else
+			aux_ch = AUX_CH_G;
+		break;
+	case DP_AUX_H:
+		if (DISPLAY_VER(i915) >= 13)
+			aux_ch = AUX_CH_USBC3;
+		else
+			aux_ch = AUX_CH_H;
+		break;
+	case DP_AUX_I:
+		if (DISPLAY_VER(i915) >= 13)
+			aux_ch = AUX_CH_USBC4;
+		else
+			aux_ch = AUX_CH_I;
+		break;
+	default:
+		MISSING_CASE(devdata->child.aux_channel);
+		aux_ch = AUX_CH_A;
+		break;
+	}
+
+	drm_dbg_kms(&i915->drm, "using AUX %c for port %c (VBT)\n",
+		    aux_ch_name(aux_ch), port_name(port));
+
+	return aux_ch;
+}
+
+int intel_bios_max_tmds_clock(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	const struct intel_bios_encoder_data *devdata = i915->display.vbt.ports[encoder->port];
+
+	return _intel_bios_max_tmds_clock(devdata);
+}
+
+/* This is an index in the HDMI/DVI DDI buffer translation table, or -1 */
+int intel_bios_hdmi_level_shift(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	const struct intel_bios_encoder_data *devdata = i915->display.vbt.ports[encoder->port];
+
+	return _intel_bios_hdmi_level_shift(devdata);
+}
+
+int intel_bios_encoder_dp_boost_level(const struct intel_bios_encoder_data *devdata)
+{
+	if (!devdata || devdata->i915->display.vbt.version < 196 || !devdata->child.iboost)
+		return 0;
+
+	return translate_iboost(devdata->child.dp_iboost_level);
+}
+
+int intel_bios_encoder_hdmi_boost_level(const struct intel_bios_encoder_data *devdata)
+{
+	if (!devdata || devdata->i915->display.vbt.version < 196 || !devdata->child.iboost)
+		return 0;
+
+	return translate_iboost(devdata->child.hdmi_iboost_level);
+}
+
+int intel_bios_dp_max_link_rate(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	const struct intel_bios_encoder_data *devdata = i915->display.vbt.ports[encoder->port];
+
+	return _intel_bios_dp_max_link_rate(devdata);
+}
+
+int intel_bios_dp_max_lane_count(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	const struct intel_bios_encoder_data *devdata = i915->display.vbt.ports[encoder->port];
+
+	return _intel_bios_dp_max_lane_count(devdata);
+}
+
+int intel_bios_alternate_ddc_pin(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	const struct intel_bios_encoder_data *devdata = i915->display.vbt.ports[encoder->port];
+
+	if (!devdata || !devdata->child.ddc_pin)
+		return 0;
+
+	return map_ddc_pin(i915, devdata->child.ddc_pin);
+}
+
+bool intel_bios_encoder_supports_typec_usb(const struct intel_bios_encoder_data *devdata)
+{
+	return devdata->i915->display.vbt.version >= 195 && devdata->child.dp_usb_type_c;
+}
+
+bool intel_bios_encoder_supports_tbt(const struct intel_bios_encoder_data *devdata)
+{
+	return devdata->i915->display.vbt.version >= 209 && devdata->child.tbt;
+}
+
+const struct intel_bios_encoder_data *
+intel_bios_encoder_data_lookup(struct drm_i915_private *i915, enum port port)
+{
+	return i915->display.vbt.ports[port];
+}
diff --git a/drivers/gpu/drm/i915/display/intel_bios.h b/drivers/gpu/drm/i915/display/intel_bios.h
new file mode 100644
index 000000000..ff1fdd2e0
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_bios.h
@@ -0,0 +1,280 @@
+/*
+ * Copyright © 2016-2019 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+/*
+ * Please use intel_vbt_defs.h for VBT private data, to hide and abstract away
+ * the VBT from the rest of the driver. Add the parsed, clean data to struct
+ * intel_vbt_data within struct drm_i915_private.
+ */
+
+#ifndef _INTEL_BIOS_H_
+#define _INTEL_BIOS_H_
+
+#include <linux/types.h>
+
+struct drm_i915_private;
+struct edid;
+struct intel_bios_encoder_data;
+struct intel_crtc_state;
+struct intel_encoder;
+struct intel_panel;
+enum port;
+
+enum intel_backlight_type {
+	INTEL_BACKLIGHT_PMIC,
+	INTEL_BACKLIGHT_LPSS,
+	INTEL_BACKLIGHT_DISPLAY_DDI,
+	INTEL_BACKLIGHT_DSI_DCS,
+	INTEL_BACKLIGHT_PANEL_DRIVER_INTERFACE,
+	INTEL_BACKLIGHT_VESA_EDP_AUX_INTERFACE,
+};
+
+struct edp_power_seq {
+	u16 t1_t3;
+	u16 t8;
+	u16 t9;
+	u16 t10;
+	u16 t11_t12;
+} __packed;
+
+/*
+ * MIPI Sequence Block definitions
+ *
+ * Note the VBT spec has AssertReset / DeassertReset swapped from their
+ * usual naming, we use the proper names here to avoid confusion when
+ * reading the code.
+ */
+enum mipi_seq {
+	MIPI_SEQ_END = 0,
+	MIPI_SEQ_DEASSERT_RESET,	/* Spec says MipiAssertResetPin */
+	MIPI_SEQ_INIT_OTP,
+	MIPI_SEQ_DISPLAY_ON,
+	MIPI_SEQ_DISPLAY_OFF,
+	MIPI_SEQ_ASSERT_RESET,		/* Spec says MipiDeassertResetPin */
+	MIPI_SEQ_BACKLIGHT_ON,		/* sequence block v2+ */
+	MIPI_SEQ_BACKLIGHT_OFF,		/* sequence block v2+ */
+	MIPI_SEQ_TEAR_ON,		/* sequence block v2+ */
+	MIPI_SEQ_TEAR_OFF,		/* sequence block v3+ */
+	MIPI_SEQ_POWER_ON,		/* sequence block v3+ */
+	MIPI_SEQ_POWER_OFF,		/* sequence block v3+ */
+	MIPI_SEQ_MAX
+};
+
+enum mipi_seq_element {
+	MIPI_SEQ_ELEM_END = 0,
+	MIPI_SEQ_ELEM_SEND_PKT,
+	MIPI_SEQ_ELEM_DELAY,
+	MIPI_SEQ_ELEM_GPIO,
+	MIPI_SEQ_ELEM_I2C,		/* sequence block v2+ */
+	MIPI_SEQ_ELEM_SPI,		/* sequence block v3+ */
+	MIPI_SEQ_ELEM_PMIC,		/* sequence block v3+ */
+	MIPI_SEQ_ELEM_MAX
+};
+
+#define MIPI_DSI_UNDEFINED_PANEL_ID	0
+#define MIPI_DSI_GENERIC_PANEL_ID	1
+
+struct mipi_config {
+	u16 panel_id;
+
+	/* General Params */
+	u32 enable_dithering:1;
+	u32 rsvd1:1;
+	u32 is_bridge:1;
+
+	u32 panel_arch_type:2;
+	u32 is_cmd_mode:1;
+
+#define NON_BURST_SYNC_PULSE	0x1
+#define NON_BURST_SYNC_EVENTS	0x2
+#define BURST_MODE		0x3
+	u32 video_transfer_mode:2;
+
+	u32 cabc_supported:1;
+#define PPS_BLC_PMIC   0
+#define PPS_BLC_SOC    1
+	u32 pwm_blc:1;
+
+	/* Bit 13:10 */
+#define PIXEL_FORMAT_RGB565			0x1
+#define PIXEL_FORMAT_RGB666			0x2
+#define PIXEL_FORMAT_RGB666_LOOSELY_PACKED	0x3
+#define PIXEL_FORMAT_RGB888			0x4
+	u32 videomode_color_format:4;
+
+	/* Bit 15:14 */
+#define ENABLE_ROTATION_0	0x0
+#define ENABLE_ROTATION_90	0x1
+#define ENABLE_ROTATION_180	0x2
+#define ENABLE_ROTATION_270	0x3
+	u32 rotation:2;
+	u32 bta_enabled:1;
+	u32 rsvd2:15;
+
+	/* 2 byte Port Description */
+#define DUAL_LINK_NOT_SUPPORTED	0
+#define DUAL_LINK_FRONT_BACK	1
+#define DUAL_LINK_PIXEL_ALT	2
+	u16 dual_link:2;
+	u16 lane_cnt:2;
+	u16 pixel_overlap:3;
+	u16 rgb_flip:1;
+#define DL_DCS_PORT_A			0x00
+#define DL_DCS_PORT_C			0x01
+#define DL_DCS_PORT_A_AND_C		0x02
+	u16 dl_dcs_cabc_ports:2;
+	u16 dl_dcs_backlight_ports:2;
+	u16 rsvd3:4;
+
+	u16 rsvd4;
+
+	u8 rsvd5;
+	u32 target_burst_mode_freq;
+	u32 dsi_ddr_clk;
+	u32 bridge_ref_clk;
+
+#define  BYTE_CLK_SEL_20MHZ		0
+#define  BYTE_CLK_SEL_10MHZ		1
+#define  BYTE_CLK_SEL_5MHZ		2
+	u8 byte_clk_sel:2;
+
+	u8 rsvd6:6;
+
+	/* DPHY Flags */
+	u16 dphy_param_valid:1;
+	u16 eot_pkt_disabled:1;
+	u16 enable_clk_stop:1;
+	u16 rsvd7:13;
+
+	u32 hs_tx_timeout;
+	u32 lp_rx_timeout;
+	u32 turn_around_timeout;
+	u32 device_reset_timer;
+	u32 master_init_timer;
+	u32 dbi_bw_timer;
+	u32 lp_byte_clk_val;
+
+	/*  4 byte Dphy Params */
+	u32 prepare_cnt:6;
+	u32 rsvd8:2;
+	u32 clk_zero_cnt:8;
+	u32 trail_cnt:5;
+	u32 rsvd9:3;
+	u32 exit_zero_cnt:6;
+	u32 rsvd10:2;
+
+	u32 clk_lane_switch_cnt;
+	u32 hl_switch_cnt;
+
+	u32 rsvd11[6];
+
+	/* timings based on dphy spec */
+	u8 tclk_miss;
+	u8 tclk_post;
+	u8 rsvd12;
+	u8 tclk_pre;
+	u8 tclk_prepare;
+	u8 tclk_settle;
+	u8 tclk_term_enable;
+	u8 tclk_trail;
+	u16 tclk_prepare_clkzero;
+	u8 rsvd13;
+	u8 td_term_enable;
+	u8 teot;
+	u8 ths_exit;
+	u8 ths_prepare;
+	u16 ths_prepare_hszero;
+	u8 rsvd14;
+	u8 ths_settle;
+	u8 ths_skip;
+	u8 ths_trail;
+	u8 tinit;
+	u8 tlpx;
+	u8 rsvd15[3];
+
+	/* GPIOs */
+	u8 panel_enable;
+	u8 bl_enable;
+	u8 pwm_enable;
+	u8 reset_r_n;
+	u8 pwr_down_r;
+	u8 stdby_r_n;
+
+} __packed;
+
+/* all delays have a unit of 100us */
+struct mipi_pps_data {
+	u16 panel_on_delay;
+	u16 bl_enable_delay;
+	u16 bl_disable_delay;
+	u16 panel_off_delay;
+	u16 panel_power_cycle_delay;
+} __packed;
+
+void intel_bios_init(struct drm_i915_private *dev_priv);
+void intel_bios_init_panel_early(struct drm_i915_private *dev_priv,
+				 struct intel_panel *panel,
+				 const struct intel_bios_encoder_data *devdata);
+void intel_bios_init_panel_late(struct drm_i915_private *dev_priv,
+				struct intel_panel *panel,
+				const struct intel_bios_encoder_data *devdata,
+				const struct edid *edid);
+void intel_bios_fini_panel(struct intel_panel *panel);
+void intel_bios_driver_remove(struct drm_i915_private *dev_priv);
+bool intel_bios_is_valid_vbt(const void *buf, size_t size);
+bool intel_bios_is_tv_present(struct drm_i915_private *dev_priv);
+bool intel_bios_is_lvds_present(struct drm_i915_private *dev_priv, u8 *i2c_pin);
+bool intel_bios_is_port_present(struct drm_i915_private *dev_priv, enum port port);
+bool intel_bios_is_port_edp(struct drm_i915_private *dev_priv, enum port port);
+bool intel_bios_is_port_dp_dual_mode(struct drm_i915_private *dev_priv, enum port port);
+bool intel_bios_is_dsi_present(struct drm_i915_private *dev_priv, enum port *port);
+bool intel_bios_is_port_hpd_inverted(const struct drm_i915_private *i915,
+				     enum port port);
+bool intel_bios_is_lspcon_present(const struct drm_i915_private *i915,
+				  enum port port);
+bool intel_bios_is_lane_reversal_needed(const struct drm_i915_private *i915,
+					enum port port);
+enum aux_ch intel_bios_port_aux_ch(struct drm_i915_private *dev_priv, enum port port);
+bool intel_bios_get_dsc_params(struct intel_encoder *encoder,
+			       struct intel_crtc_state *crtc_state,
+			       int dsc_max_bpc);
+int intel_bios_max_tmds_clock(struct intel_encoder *encoder);
+int intel_bios_hdmi_level_shift(struct intel_encoder *encoder);
+int intel_bios_dp_max_link_rate(struct intel_encoder *encoder);
+int intel_bios_dp_max_lane_count(struct intel_encoder *encoder);
+int intel_bios_alternate_ddc_pin(struct intel_encoder *encoder);
+bool intel_bios_port_supports_typec_usb(struct drm_i915_private *i915, enum port port);
+bool intel_bios_port_supports_tbt(struct drm_i915_private *i915, enum port port);
+
+const struct intel_bios_encoder_data *
+intel_bios_encoder_data_lookup(struct drm_i915_private *i915, enum port port);
+
+bool intel_bios_encoder_supports_dvi(const struct intel_bios_encoder_data *devdata);
+bool intel_bios_encoder_supports_hdmi(const struct intel_bios_encoder_data *devdata);
+bool intel_bios_encoder_supports_dp(const struct intel_bios_encoder_data *devdata);
+bool intel_bios_encoder_supports_typec_usb(const struct intel_bios_encoder_data *devdata);
+bool intel_bios_encoder_supports_tbt(const struct intel_bios_encoder_data *devdata);
+int intel_bios_encoder_dp_boost_level(const struct intel_bios_encoder_data *devdata);
+int intel_bios_encoder_hdmi_boost_level(const struct intel_bios_encoder_data *devdata);
+
+#endif /* _INTEL_BIOS_H_ */
diff --git a/drivers/gpu/drm/i915/display/intel_bw.c b/drivers/gpu/drm/i915/display/intel_bw.c
new file mode 100644
index 000000000..4ace026b2
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_bw.c
@@ -0,0 +1,1203 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#include <drm/drm_atomic_state_helper.h>
+
+#include "i915_drv.h"
+#include "i915_reg.h"
+#include "i915_utils.h"
+#include "intel_atomic.h"
+#include "intel_bw.h"
+#include "intel_cdclk.h"
+#include "intel_display_core.h"
+#include "intel_display_types.h"
+#include "skl_watermark.h"
+#include "intel_mchbar_regs.h"
+#include "intel_pcode.h"
+
+/* Parameters for Qclk Geyserville (QGV) */
+struct intel_qgv_point {
+	u16 dclk, t_rp, t_rdpre, t_rc, t_ras, t_rcd;
+};
+
+struct intel_psf_gv_point {
+	u8 clk; /* clock in multiples of 16.6666 MHz */
+};
+
+struct intel_qgv_info {
+	struct intel_qgv_point points[I915_NUM_QGV_POINTS];
+	struct intel_psf_gv_point psf_points[I915_NUM_PSF_GV_POINTS];
+	u8 num_points;
+	u8 num_psf_points;
+	u8 t_bl;
+	u8 max_numchannels;
+	u8 channel_width;
+	u8 deinterleave;
+};
+
+static int dg1_mchbar_read_qgv_point_info(struct drm_i915_private *dev_priv,
+					  struct intel_qgv_point *sp,
+					  int point)
+{
+	u32 dclk_ratio, dclk_reference;
+	u32 val;
+
+	val = intel_uncore_read(&dev_priv->uncore, SA_PERF_STATUS_0_0_0_MCHBAR_PC);
+	dclk_ratio = REG_FIELD_GET(DG1_QCLK_RATIO_MASK, val);
+	if (val & DG1_QCLK_REFERENCE)
+		dclk_reference = 6; /* 6 * 16.666 MHz = 100 MHz */
+	else
+		dclk_reference = 8; /* 8 * 16.666 MHz = 133 MHz */
+	sp->dclk = DIV_ROUND_UP((16667 * dclk_ratio * dclk_reference) + 500, 1000);
+
+	val = intel_uncore_read(&dev_priv->uncore, SKL_MC_BIOS_DATA_0_0_0_MCHBAR_PCU);
+	if (val & DG1_GEAR_TYPE)
+		sp->dclk *= 2;
+
+	if (sp->dclk == 0)
+		return -EINVAL;
+
+	val = intel_uncore_read(&dev_priv->uncore, MCHBAR_CH0_CR_TC_PRE_0_0_0_MCHBAR);
+	sp->t_rp = REG_FIELD_GET(DG1_DRAM_T_RP_MASK, val);
+	sp->t_rdpre = REG_FIELD_GET(DG1_DRAM_T_RDPRE_MASK, val);
+
+	val = intel_uncore_read(&dev_priv->uncore, MCHBAR_CH0_CR_TC_PRE_0_0_0_MCHBAR_HIGH);
+	sp->t_rcd = REG_FIELD_GET(DG1_DRAM_T_RCD_MASK, val);
+	sp->t_ras = REG_FIELD_GET(DG1_DRAM_T_RAS_MASK, val);
+
+	sp->t_rc = sp->t_rp + sp->t_ras;
+
+	return 0;
+}
+
+static int icl_pcode_read_qgv_point_info(struct drm_i915_private *dev_priv,
+					 struct intel_qgv_point *sp,
+					 int point)
+{
+	u32 val = 0, val2 = 0;
+	u16 dclk;
+	int ret;
+
+	ret = snb_pcode_read(&dev_priv->uncore, ICL_PCODE_MEM_SUBSYSYSTEM_INFO |
+			     ICL_PCODE_MEM_SS_READ_QGV_POINT_INFO(point),
+			     &val, &val2);
+	if (ret)
+		return ret;
+
+	dclk = val & 0xffff;
+	sp->dclk = DIV_ROUND_UP((16667 * dclk) + (DISPLAY_VER(dev_priv) > 11 ? 500 : 0), 1000);
+	sp->t_rp = (val & 0xff0000) >> 16;
+	sp->t_rcd = (val & 0xff000000) >> 24;
+
+	sp->t_rdpre = val2 & 0xff;
+	sp->t_ras = (val2 & 0xff00) >> 8;
+
+	sp->t_rc = sp->t_rp + sp->t_ras;
+
+	return 0;
+}
+
+static int adls_pcode_read_psf_gv_point_info(struct drm_i915_private *dev_priv,
+					    struct intel_psf_gv_point *points)
+{
+	u32 val = 0;
+	int ret;
+	int i;
+
+	ret = snb_pcode_read(&dev_priv->uncore, ICL_PCODE_MEM_SUBSYSYSTEM_INFO |
+			     ADL_PCODE_MEM_SS_READ_PSF_GV_INFO, &val, NULL);
+	if (ret)
+		return ret;
+
+	for (i = 0; i < I915_NUM_PSF_GV_POINTS; i++) {
+		points[i].clk = val & 0xff;
+		val >>= 8;
+	}
+
+	return 0;
+}
+
+int icl_pcode_restrict_qgv_points(struct drm_i915_private *dev_priv,
+				  u32 points_mask)
+{
+	int ret;
+
+	/* bspec says to keep retrying for at least 1 ms */
+	ret = skl_pcode_request(&dev_priv->uncore, ICL_PCODE_SAGV_DE_MEM_SS_CONFIG,
+				points_mask,
+				ICL_PCODE_REP_QGV_MASK | ADLS_PCODE_REP_PSF_MASK,
+				ICL_PCODE_REP_QGV_SAFE | ADLS_PCODE_REP_PSF_SAFE,
+				1);
+
+	if (ret < 0) {
+		drm_err(&dev_priv->drm, "Failed to disable qgv points (%d) points: 0x%x\n", ret, points_mask);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int mtl_read_qgv_point_info(struct drm_i915_private *dev_priv,
+				   struct intel_qgv_point *sp, int point)
+{
+	u32 val, val2;
+	u16 dclk;
+
+	val = intel_uncore_read(&dev_priv->uncore,
+				MTL_MEM_SS_INFO_QGV_POINT_LOW(point));
+	val2 = intel_uncore_read(&dev_priv->uncore,
+				 MTL_MEM_SS_INFO_QGV_POINT_HIGH(point));
+	dclk = REG_FIELD_GET(MTL_DCLK_MASK, val);
+	sp->dclk = DIV_ROUND_UP((16667 * dclk), 1000);
+	sp->t_rp = REG_FIELD_GET(MTL_TRP_MASK, val);
+	sp->t_rcd = REG_FIELD_GET(MTL_TRCD_MASK, val);
+
+	sp->t_rdpre = REG_FIELD_GET(MTL_TRDPRE_MASK, val2);
+	sp->t_ras = REG_FIELD_GET(MTL_TRAS_MASK, val2);
+
+	sp->t_rc = sp->t_rp + sp->t_ras;
+
+	return 0;
+}
+
+static int
+intel_read_qgv_point_info(struct drm_i915_private *dev_priv,
+			  struct intel_qgv_point *sp,
+			  int point)
+{
+	if (DISPLAY_VER(dev_priv) >= 14)
+		return mtl_read_qgv_point_info(dev_priv, sp, point);
+	else if (IS_DG1(dev_priv))
+		return dg1_mchbar_read_qgv_point_info(dev_priv, sp, point);
+	else
+		return icl_pcode_read_qgv_point_info(dev_priv, sp, point);
+}
+
+static int icl_get_qgv_points(struct drm_i915_private *dev_priv,
+			      struct intel_qgv_info *qi,
+			      bool is_y_tile)
+{
+	const struct dram_info *dram_info = &dev_priv->dram_info;
+	int i, ret;
+
+	qi->num_points = dram_info->num_qgv_points;
+	qi->num_psf_points = dram_info->num_psf_gv_points;
+
+	if (DISPLAY_VER(dev_priv) >= 14) {
+		switch (dram_info->type) {
+		case INTEL_DRAM_DDR4:
+			qi->t_bl = 4;
+			qi->max_numchannels = 2;
+			qi->channel_width = 64;
+			qi->deinterleave = 2;
+			break;
+		case INTEL_DRAM_DDR5:
+			qi->t_bl = 8;
+			qi->max_numchannels = 4;
+			qi->channel_width = 32;
+			qi->deinterleave = 2;
+			break;
+		case INTEL_DRAM_LPDDR4:
+		case INTEL_DRAM_LPDDR5:
+			qi->t_bl = 16;
+			qi->max_numchannels = 8;
+			qi->channel_width = 16;
+			qi->deinterleave = 4;
+			break;
+		default:
+			MISSING_CASE(dram_info->type);
+			return -EINVAL;
+		}
+	} else if (DISPLAY_VER(dev_priv) >= 12) {
+		switch (dram_info->type) {
+		case INTEL_DRAM_DDR4:
+			qi->t_bl = is_y_tile ? 8 : 4;
+			qi->max_numchannels = 2;
+			qi->channel_width = 64;
+			qi->deinterleave = is_y_tile ? 1 : 2;
+			break;
+		case INTEL_DRAM_DDR5:
+			qi->t_bl = is_y_tile ? 16 : 8;
+			qi->max_numchannels = 4;
+			qi->channel_width = 32;
+			qi->deinterleave = is_y_tile ? 1 : 2;
+			break;
+		case INTEL_DRAM_LPDDR4:
+			if (IS_ROCKETLAKE(dev_priv)) {
+				qi->t_bl = 8;
+				qi->max_numchannels = 4;
+				qi->channel_width = 32;
+				qi->deinterleave = 2;
+				break;
+			}
+			fallthrough;
+		case INTEL_DRAM_LPDDR5:
+			qi->t_bl = 16;
+			qi->max_numchannels = 8;
+			qi->channel_width = 16;
+			qi->deinterleave = is_y_tile ? 2 : 4;
+			break;
+		default:
+			qi->t_bl = 16;
+			qi->max_numchannels = 1;
+			break;
+		}
+	} else if (DISPLAY_VER(dev_priv) == 11) {
+		qi->t_bl = dev_priv->dram_info.type == INTEL_DRAM_DDR4 ? 4 : 8;
+		qi->max_numchannels = 1;
+	}
+
+	if (drm_WARN_ON(&dev_priv->drm,
+			qi->num_points > ARRAY_SIZE(qi->points)))
+		qi->num_points = ARRAY_SIZE(qi->points);
+
+	for (i = 0; i < qi->num_points; i++) {
+		struct intel_qgv_point *sp = &qi->points[i];
+
+		ret = intel_read_qgv_point_info(dev_priv, sp, i);
+		if (ret)
+			return ret;
+
+		drm_dbg_kms(&dev_priv->drm,
+			    "QGV %d: DCLK=%d tRP=%d tRDPRE=%d tRAS=%d tRCD=%d tRC=%d\n",
+			    i, sp->dclk, sp->t_rp, sp->t_rdpre, sp->t_ras,
+			    sp->t_rcd, sp->t_rc);
+	}
+
+	if (qi->num_psf_points > 0) {
+		ret = adls_pcode_read_psf_gv_point_info(dev_priv, qi->psf_points);
+		if (ret) {
+			drm_err(&dev_priv->drm, "Failed to read PSF point data; PSF points will not be considered in bandwidth calculations.\n");
+			qi->num_psf_points = 0;
+		}
+
+		for (i = 0; i < qi->num_psf_points; i++)
+			drm_dbg_kms(&dev_priv->drm,
+				    "PSF GV %d: CLK=%d \n",
+				    i, qi->psf_points[i].clk);
+	}
+
+	return 0;
+}
+
+static int adl_calc_psf_bw(int clk)
+{
+	/*
+	 * clk is multiples of 16.666MHz (100/6)
+	 * According to BSpec PSF GV bandwidth is
+	 * calculated as BW = 64 * clk * 16.666Mhz
+	 */
+	return DIV_ROUND_CLOSEST(64 * clk * 100, 6);
+}
+
+static int icl_sagv_max_dclk(const struct intel_qgv_info *qi)
+{
+	u16 dclk = 0;
+	int i;
+
+	for (i = 0; i < qi->num_points; i++)
+		dclk = max(dclk, qi->points[i].dclk);
+
+	return dclk;
+}
+
+struct intel_sa_info {
+	u16 displayrtids;
+	u8 deburst, deprogbwlimit, derating;
+};
+
+static const struct intel_sa_info icl_sa_info = {
+	.deburst = 8,
+	.deprogbwlimit = 25, /* GB/s */
+	.displayrtids = 128,
+	.derating = 10,
+};
+
+static const struct intel_sa_info tgl_sa_info = {
+	.deburst = 16,
+	.deprogbwlimit = 34, /* GB/s */
+	.displayrtids = 256,
+	.derating = 10,
+};
+
+static const struct intel_sa_info rkl_sa_info = {
+	.deburst = 8,
+	.deprogbwlimit = 20, /* GB/s */
+	.displayrtids = 128,
+	.derating = 10,
+};
+
+static const struct intel_sa_info adls_sa_info = {
+	.deburst = 16,
+	.deprogbwlimit = 38, /* GB/s */
+	.displayrtids = 256,
+	.derating = 10,
+};
+
+static const struct intel_sa_info adlp_sa_info = {
+	.deburst = 16,
+	.deprogbwlimit = 38, /* GB/s */
+	.displayrtids = 256,
+	.derating = 20,
+};
+
+static const struct intel_sa_info mtl_sa_info = {
+	.deburst = 32,
+	.deprogbwlimit = 38, /* GB/s */
+	.displayrtids = 256,
+	.derating = 20,
+};
+
+static int icl_get_bw_info(struct drm_i915_private *dev_priv, const struct intel_sa_info *sa)
+{
+	struct intel_qgv_info qi = {};
+	bool is_y_tile = true; /* assume y tile may be used */
+	int num_channels = max_t(u8, 1, dev_priv->dram_info.num_channels);
+	int ipqdepth, ipqdepthpch = 16;
+	int dclk_max;
+	int maxdebw;
+	int num_groups = ARRAY_SIZE(dev_priv->display.bw.max);
+	int i, ret;
+
+	ret = icl_get_qgv_points(dev_priv, &qi, is_y_tile);
+	if (ret) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Failed to get memory subsystem information, ignoring bandwidth limits");
+		return ret;
+	}
+
+	dclk_max = icl_sagv_max_dclk(&qi);
+	maxdebw = min(sa->deprogbwlimit * 1000, dclk_max * 16 * 6 / 10);
+	ipqdepth = min(ipqdepthpch, sa->displayrtids / num_channels);
+	qi.deinterleave = DIV_ROUND_UP(num_channels, is_y_tile ? 4 : 2);
+
+	for (i = 0; i < num_groups; i++) {
+		struct intel_bw_info *bi = &dev_priv->display.bw.max[i];
+		int clpchgroup;
+		int j;
+
+		clpchgroup = (sa->deburst * qi.deinterleave / num_channels) << i;
+		bi->num_planes = (ipqdepth - clpchgroup) / clpchgroup + 1;
+
+		bi->num_qgv_points = qi.num_points;
+		bi->num_psf_gv_points = qi.num_psf_points;
+
+		for (j = 0; j < qi.num_points; j++) {
+			const struct intel_qgv_point *sp = &qi.points[j];
+			int ct, bw;
+
+			/*
+			 * Max row cycle time
+			 *
+			 * FIXME what is the logic behind the
+			 * assumed burst length?
+			 */
+			ct = max_t(int, sp->t_rc, sp->t_rp + sp->t_rcd +
+				   (clpchgroup - 1) * qi.t_bl + sp->t_rdpre);
+			bw = DIV_ROUND_UP(sp->dclk * clpchgroup * 32 * num_channels, ct);
+
+			bi->deratedbw[j] = min(maxdebw,
+					       bw * (100 - sa->derating) / 100);
+
+			drm_dbg_kms(&dev_priv->drm,
+				    "BW%d / QGV %d: num_planes=%d deratedbw=%u\n",
+				    i, j, bi->num_planes, bi->deratedbw[j]);
+		}
+	}
+	/*
+	 * In case if SAGV is disabled in BIOS, we always get 1
+	 * SAGV point, but we can't send PCode commands to restrict it
+	 * as it will fail and pointless anyway.
+	 */
+	if (qi.num_points == 1)
+		dev_priv->display.sagv.status = I915_SAGV_NOT_CONTROLLED;
+	else
+		dev_priv->display.sagv.status = I915_SAGV_ENABLED;
+
+	return 0;
+}
+
+static int tgl_get_bw_info(struct drm_i915_private *dev_priv, const struct intel_sa_info *sa)
+{
+	struct intel_qgv_info qi = {};
+	const struct dram_info *dram_info = &dev_priv->dram_info;
+	bool is_y_tile = true; /* assume y tile may be used */
+	int num_channels = max_t(u8, 1, dev_priv->dram_info.num_channels);
+	int ipqdepth, ipqdepthpch = 16;
+	int dclk_max;
+	int maxdebw, peakbw;
+	int clperchgroup;
+	int num_groups = ARRAY_SIZE(dev_priv->display.bw.max);
+	int i, ret;
+
+	ret = icl_get_qgv_points(dev_priv, &qi, is_y_tile);
+	if (ret) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Failed to get memory subsystem information, ignoring bandwidth limits");
+		return ret;
+	}
+
+	if (dram_info->type == INTEL_DRAM_LPDDR4 || dram_info->type == INTEL_DRAM_LPDDR5)
+		num_channels *= 2;
+
+	qi.deinterleave = qi.deinterleave ? : DIV_ROUND_UP(num_channels, is_y_tile ? 4 : 2);
+
+	if (num_channels < qi.max_numchannels && DISPLAY_VER(dev_priv) >= 12)
+		qi.deinterleave = max(DIV_ROUND_UP(qi.deinterleave, 2), 1);
+
+	if (DISPLAY_VER(dev_priv) > 11 && num_channels > qi.max_numchannels)
+		drm_warn(&dev_priv->drm, "Number of channels exceeds max number of channels.");
+	if (qi.max_numchannels != 0)
+		num_channels = min_t(u8, num_channels, qi.max_numchannels);
+
+	dclk_max = icl_sagv_max_dclk(&qi);
+
+	peakbw = num_channels * DIV_ROUND_UP(qi.channel_width, 8) * dclk_max;
+	maxdebw = min(sa->deprogbwlimit * 1000, peakbw * 6 / 10); /* 60% */
+
+	ipqdepth = min(ipqdepthpch, sa->displayrtids / num_channels);
+	/*
+	 * clperchgroup = 4kpagespermempage * clperchperblock,
+	 * clperchperblock = 8 / num_channels * interleave
+	 */
+	clperchgroup = 4 * DIV_ROUND_UP(8, num_channels) * qi.deinterleave;
+
+	for (i = 0; i < num_groups; i++) {
+		struct intel_bw_info *bi = &dev_priv->display.bw.max[i];
+		struct intel_bw_info *bi_next;
+		int clpchgroup;
+		int j;
+
+		clpchgroup = (sa->deburst * qi.deinterleave / num_channels) << i;
+
+		if (i < num_groups - 1) {
+			bi_next = &dev_priv->display.bw.max[i + 1];
+
+			if (clpchgroup < clperchgroup)
+				bi_next->num_planes = (ipqdepth - clpchgroup) /
+						       clpchgroup + 1;
+			else
+				bi_next->num_planes = 0;
+		}
+
+		bi->num_qgv_points = qi.num_points;
+		bi->num_psf_gv_points = qi.num_psf_points;
+
+		for (j = 0; j < qi.num_points; j++) {
+			const struct intel_qgv_point *sp = &qi.points[j];
+			int ct, bw;
+
+			/*
+			 * Max row cycle time
+			 *
+			 * FIXME what is the logic behind the
+			 * assumed burst length?
+			 */
+			ct = max_t(int, sp->t_rc, sp->t_rp + sp->t_rcd +
+				   (clpchgroup - 1) * qi.t_bl + sp->t_rdpre);
+			bw = DIV_ROUND_UP(sp->dclk * clpchgroup * 32 * num_channels, ct);
+
+			bi->deratedbw[j] = min(maxdebw,
+					       bw * (100 - sa->derating) / 100);
+
+			drm_dbg_kms(&dev_priv->drm,
+				    "BW%d / QGV %d: num_planes=%d deratedbw=%u\n",
+				    i, j, bi->num_planes, bi->deratedbw[j]);
+		}
+
+		for (j = 0; j < qi.num_psf_points; j++) {
+			const struct intel_psf_gv_point *sp = &qi.psf_points[j];
+
+			bi->psf_bw[j] = adl_calc_psf_bw(sp->clk);
+
+			drm_dbg_kms(&dev_priv->drm,
+				    "BW%d / PSF GV %d: num_planes=%d bw=%u\n",
+				    i, j, bi->num_planes, bi->psf_bw[j]);
+		}
+	}
+
+	/*
+	 * In case if SAGV is disabled in BIOS, we always get 1
+	 * SAGV point, but we can't send PCode commands to restrict it
+	 * as it will fail and pointless anyway.
+	 */
+	if (qi.num_points == 1)
+		dev_priv->display.sagv.status = I915_SAGV_NOT_CONTROLLED;
+	else
+		dev_priv->display.sagv.status = I915_SAGV_ENABLED;
+
+	return 0;
+}
+
+static void dg2_get_bw_info(struct drm_i915_private *i915)
+{
+	unsigned int deratedbw = IS_DG2_G11(i915) ? 38000 : 50000;
+	int num_groups = ARRAY_SIZE(i915->display.bw.max);
+	int i;
+
+	/*
+	 * DG2 doesn't have SAGV or QGV points, just a constant max bandwidth
+	 * that doesn't depend on the number of planes enabled. So fill all the
+	 * plane group with constant bw information for uniformity with other
+	 * platforms. DG2-G10 platforms have a constant 50 GB/s bandwidth,
+	 * whereas DG2-G11 platforms have 38 GB/s.
+	 */
+	for (i = 0; i < num_groups; i++) {
+		struct intel_bw_info *bi = &i915->display.bw.max[i];
+
+		bi->num_planes = 1;
+		/* Need only one dummy QGV point per group */
+		bi->num_qgv_points = 1;
+		bi->deratedbw[0] = deratedbw;
+	}
+
+	i915->display.sagv.status = I915_SAGV_NOT_CONTROLLED;
+}
+
+static unsigned int icl_max_bw(struct drm_i915_private *dev_priv,
+			       int num_planes, int qgv_point)
+{
+	int i;
+
+	/*
+	 * Let's return max bw for 0 planes
+	 */
+	num_planes = max(1, num_planes);
+
+	for (i = 0; i < ARRAY_SIZE(dev_priv->display.bw.max); i++) {
+		const struct intel_bw_info *bi =
+			&dev_priv->display.bw.max[i];
+
+		/*
+		 * Pcode will not expose all QGV points when
+		 * SAGV is forced to off/min/med/max.
+		 */
+		if (qgv_point >= bi->num_qgv_points)
+			return UINT_MAX;
+
+		if (num_planes >= bi->num_planes)
+			return bi->deratedbw[qgv_point];
+	}
+
+	return 0;
+}
+
+static unsigned int tgl_max_bw(struct drm_i915_private *dev_priv,
+			       int num_planes, int qgv_point)
+{
+	int i;
+
+	/*
+	 * Let's return max bw for 0 planes
+	 */
+	num_planes = max(1, num_planes);
+
+	for (i = ARRAY_SIZE(dev_priv->display.bw.max) - 1; i >= 0; i--) {
+		const struct intel_bw_info *bi =
+			&dev_priv->display.bw.max[i];
+
+		/*
+		 * Pcode will not expose all QGV points when
+		 * SAGV is forced to off/min/med/max.
+		 */
+		if (qgv_point >= bi->num_qgv_points)
+			return UINT_MAX;
+
+		if (num_planes <= bi->num_planes)
+			return bi->deratedbw[qgv_point];
+	}
+
+	return dev_priv->display.bw.max[0].deratedbw[qgv_point];
+}
+
+static unsigned int adl_psf_bw(struct drm_i915_private *dev_priv,
+			       int psf_gv_point)
+{
+	const struct intel_bw_info *bi =
+			&dev_priv->display.bw.max[0];
+
+	return bi->psf_bw[psf_gv_point];
+}
+
+void intel_bw_init_hw(struct drm_i915_private *dev_priv)
+{
+	if (!HAS_DISPLAY(dev_priv))
+		return;
+
+	if (DISPLAY_VER(dev_priv) >= 14)
+		tgl_get_bw_info(dev_priv, &mtl_sa_info);
+	else if (IS_DG2(dev_priv))
+		dg2_get_bw_info(dev_priv);
+	else if (IS_ALDERLAKE_P(dev_priv))
+		tgl_get_bw_info(dev_priv, &adlp_sa_info);
+	else if (IS_ALDERLAKE_S(dev_priv))
+		tgl_get_bw_info(dev_priv, &adls_sa_info);
+	else if (IS_ROCKETLAKE(dev_priv))
+		tgl_get_bw_info(dev_priv, &rkl_sa_info);
+	else if (DISPLAY_VER(dev_priv) == 12)
+		tgl_get_bw_info(dev_priv, &tgl_sa_info);
+	else if (DISPLAY_VER(dev_priv) == 11)
+		icl_get_bw_info(dev_priv, &icl_sa_info);
+}
+
+static unsigned int intel_bw_crtc_num_active_planes(const struct intel_crtc_state *crtc_state)
+{
+	/*
+	 * We assume cursors are small enough
+	 * to not not cause bandwidth problems.
+	 */
+	return hweight8(crtc_state->active_planes & ~BIT(PLANE_CURSOR));
+}
+
+static unsigned int intel_bw_crtc_data_rate(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	unsigned int data_rate = 0;
+	enum plane_id plane_id;
+
+	for_each_plane_id_on_crtc(crtc, plane_id) {
+		/*
+		 * We assume cursors are small enough
+		 * to not not cause bandwidth problems.
+		 */
+		if (plane_id == PLANE_CURSOR)
+			continue;
+
+		data_rate += crtc_state->data_rate[plane_id];
+
+		if (DISPLAY_VER(i915) < 11)
+			data_rate += crtc_state->data_rate_y[plane_id];
+	}
+
+	return data_rate;
+}
+
+/* "Maximum Pipe Read Bandwidth" */
+static int intel_bw_crtc_min_cdclk(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+
+	if (DISPLAY_VER(i915) < 12)
+		return 0;
+
+	return DIV_ROUND_UP_ULL(mul_u32_u32(intel_bw_crtc_data_rate(crtc_state), 10), 512);
+}
+
+void intel_bw_crtc_update(struct intel_bw_state *bw_state,
+			  const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+
+	bw_state->data_rate[crtc->pipe] =
+		intel_bw_crtc_data_rate(crtc_state);
+	bw_state->num_active_planes[crtc->pipe] =
+		intel_bw_crtc_num_active_planes(crtc_state);
+
+	drm_dbg_kms(&i915->drm, "pipe %c data rate %u num active planes %u\n",
+		    pipe_name(crtc->pipe),
+		    bw_state->data_rate[crtc->pipe],
+		    bw_state->num_active_planes[crtc->pipe]);
+}
+
+static unsigned int intel_bw_num_active_planes(struct drm_i915_private *dev_priv,
+					       const struct intel_bw_state *bw_state)
+{
+	unsigned int num_active_planes = 0;
+	enum pipe pipe;
+
+	for_each_pipe(dev_priv, pipe)
+		num_active_planes += bw_state->num_active_planes[pipe];
+
+	return num_active_planes;
+}
+
+static unsigned int intel_bw_data_rate(struct drm_i915_private *dev_priv,
+				       const struct intel_bw_state *bw_state)
+{
+	unsigned int data_rate = 0;
+	enum pipe pipe;
+
+	for_each_pipe(dev_priv, pipe)
+		data_rate += bw_state->data_rate[pipe];
+
+	if (DISPLAY_VER(dev_priv) >= 13 && i915_vtd_active(dev_priv))
+		data_rate = DIV_ROUND_UP(data_rate * 105, 100);
+
+	return data_rate;
+}
+
+struct intel_bw_state *
+intel_atomic_get_old_bw_state(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct intel_global_state *bw_state;
+
+	bw_state = intel_atomic_get_old_global_obj_state(state, &dev_priv->display.bw.obj);
+
+	return to_intel_bw_state(bw_state);
+}
+
+struct intel_bw_state *
+intel_atomic_get_new_bw_state(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct intel_global_state *bw_state;
+
+	bw_state = intel_atomic_get_new_global_obj_state(state, &dev_priv->display.bw.obj);
+
+	return to_intel_bw_state(bw_state);
+}
+
+struct intel_bw_state *
+intel_atomic_get_bw_state(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct intel_global_state *bw_state;
+
+	bw_state = intel_atomic_get_global_obj_state(state, &dev_priv->display.bw.obj);
+	if (IS_ERR(bw_state))
+		return ERR_CAST(bw_state);
+
+	return to_intel_bw_state(bw_state);
+}
+
+static bool intel_bw_state_changed(struct drm_i915_private *i915,
+				   const struct intel_bw_state *old_bw_state,
+				   const struct intel_bw_state *new_bw_state)
+{
+	enum pipe pipe;
+
+	for_each_pipe(i915, pipe) {
+		const struct intel_dbuf_bw *old_crtc_bw =
+			&old_bw_state->dbuf_bw[pipe];
+		const struct intel_dbuf_bw *new_crtc_bw =
+			&new_bw_state->dbuf_bw[pipe];
+		enum dbuf_slice slice;
+
+		for_each_dbuf_slice(i915, slice) {
+			if (old_crtc_bw->max_bw[slice] != new_crtc_bw->max_bw[slice] ||
+			    old_crtc_bw->active_planes[slice] != new_crtc_bw->active_planes[slice])
+				return true;
+		}
+
+		if (old_bw_state->min_cdclk[pipe] != new_bw_state->min_cdclk[pipe])
+			return true;
+	}
+
+	return false;
+}
+
+static void skl_plane_calc_dbuf_bw(struct intel_bw_state *bw_state,
+				   struct intel_crtc *crtc,
+				   enum plane_id plane_id,
+				   const struct skl_ddb_entry *ddb,
+				   unsigned int data_rate)
+{
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	struct intel_dbuf_bw *crtc_bw = &bw_state->dbuf_bw[crtc->pipe];
+	unsigned int dbuf_mask = skl_ddb_dbuf_slice_mask(i915, ddb);
+	enum dbuf_slice slice;
+
+	/*
+	 * The arbiter can only really guarantee an
+	 * equal share of the total bw to each plane.
+	 */
+	for_each_dbuf_slice_in_mask(i915, slice, dbuf_mask) {
+		crtc_bw->max_bw[slice] = max(crtc_bw->max_bw[slice], data_rate);
+		crtc_bw->active_planes[slice] |= BIT(plane_id);
+	}
+}
+
+static void skl_crtc_calc_dbuf_bw(struct intel_bw_state *bw_state,
+				  const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	struct intel_dbuf_bw *crtc_bw = &bw_state->dbuf_bw[crtc->pipe];
+	enum plane_id plane_id;
+
+	memset(crtc_bw, 0, sizeof(*crtc_bw));
+
+	if (!crtc_state->hw.active)
+		return;
+
+	for_each_plane_id_on_crtc(crtc, plane_id) {
+		/*
+		 * We assume cursors are small enough
+		 * to not cause bandwidth problems.
+		 */
+		if (plane_id == PLANE_CURSOR)
+			continue;
+
+		skl_plane_calc_dbuf_bw(bw_state, crtc, plane_id,
+				       &crtc_state->wm.skl.plane_ddb[plane_id],
+				       crtc_state->data_rate[plane_id]);
+
+		if (DISPLAY_VER(i915) < 11)
+			skl_plane_calc_dbuf_bw(bw_state, crtc, plane_id,
+					       &crtc_state->wm.skl.plane_ddb_y[plane_id],
+					       crtc_state->data_rate[plane_id]);
+	}
+}
+
+/* "Maximum Data Buffer Bandwidth" */
+static int
+intel_bw_dbuf_min_cdclk(struct drm_i915_private *i915,
+			const struct intel_bw_state *bw_state)
+{
+	unsigned int total_max_bw = 0;
+	enum dbuf_slice slice;
+
+	for_each_dbuf_slice(i915, slice) {
+		int num_active_planes = 0;
+		unsigned int max_bw = 0;
+		enum pipe pipe;
+
+		/*
+		 * The arbiter can only really guarantee an
+		 * equal share of the total bw to each plane.
+		 */
+		for_each_pipe(i915, pipe) {
+			const struct intel_dbuf_bw *crtc_bw = &bw_state->dbuf_bw[pipe];
+
+			max_bw = max(crtc_bw->max_bw[slice], max_bw);
+			num_active_planes += hweight8(crtc_bw->active_planes[slice]);
+		}
+		max_bw *= num_active_planes;
+
+		total_max_bw = max(total_max_bw, max_bw);
+	}
+
+	return DIV_ROUND_UP(total_max_bw, 64);
+}
+
+int intel_bw_min_cdclk(struct drm_i915_private *i915,
+		       const struct intel_bw_state *bw_state)
+{
+	enum pipe pipe;
+	int min_cdclk;
+
+	min_cdclk = intel_bw_dbuf_min_cdclk(i915, bw_state);
+
+	for_each_pipe(i915, pipe)
+		min_cdclk = max(bw_state->min_cdclk[pipe], min_cdclk);
+
+	return min_cdclk;
+}
+
+int intel_bw_calc_min_cdclk(struct intel_atomic_state *state,
+			    bool *need_cdclk_calc)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct intel_bw_state *new_bw_state = NULL;
+	const struct intel_bw_state *old_bw_state = NULL;
+	const struct intel_cdclk_state *cdclk_state;
+	const struct intel_crtc_state *crtc_state;
+	int old_min_cdclk, new_min_cdclk;
+	struct intel_crtc *crtc;
+	int i;
+
+	if (DISPLAY_VER(dev_priv) < 9)
+		return 0;
+
+	for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) {
+		new_bw_state = intel_atomic_get_bw_state(state);
+		if (IS_ERR(new_bw_state))
+			return PTR_ERR(new_bw_state);
+
+		old_bw_state = intel_atomic_get_old_bw_state(state);
+
+		skl_crtc_calc_dbuf_bw(new_bw_state, crtc_state);
+
+		new_bw_state->min_cdclk[crtc->pipe] =
+			intel_bw_crtc_min_cdclk(crtc_state);
+	}
+
+	if (!old_bw_state)
+		return 0;
+
+	if (intel_bw_state_changed(dev_priv, old_bw_state, new_bw_state)) {
+		int ret = intel_atomic_lock_global_state(&new_bw_state->base);
+		if (ret)
+			return ret;
+	}
+
+	old_min_cdclk = intel_bw_min_cdclk(dev_priv, old_bw_state);
+	new_min_cdclk = intel_bw_min_cdclk(dev_priv, new_bw_state);
+
+	/*
+	 * No need to check against the cdclk state if
+	 * the min cdclk doesn't increase.
+	 *
+	 * Ie. we only ever increase the cdclk due to bandwidth
+	 * requirements. This can reduce back and forth
+	 * display blinking due to constant cdclk changes.
+	 */
+	if (new_min_cdclk <= old_min_cdclk)
+		return 0;
+
+	cdclk_state = intel_atomic_get_cdclk_state(state);
+	if (IS_ERR(cdclk_state))
+		return PTR_ERR(cdclk_state);
+
+	/*
+	 * No need to recalculate the cdclk state if
+	 * the min cdclk doesn't increase.
+	 *
+	 * Ie. we only ever increase the cdclk due to bandwidth
+	 * requirements. This can reduce back and forth
+	 * display blinking due to constant cdclk changes.
+	 */
+	if (new_min_cdclk <= cdclk_state->bw_min_cdclk)
+		return 0;
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "new bandwidth min cdclk (%d kHz) > old min cdclk (%d kHz)\n",
+		    new_min_cdclk, cdclk_state->bw_min_cdclk);
+	*need_cdclk_calc = true;
+
+	return 0;
+}
+
+static u16 icl_qgv_points_mask(struct drm_i915_private *i915)
+{
+	unsigned int num_psf_gv_points = i915->display.bw.max[0].num_psf_gv_points;
+	unsigned int num_qgv_points = i915->display.bw.max[0].num_qgv_points;
+	u16 qgv_points = 0, psf_points = 0;
+
+	/*
+	 * We can _not_ use the whole ADLS_QGV_PT_MASK here, as PCode rejects
+	 * it with failure if we try masking any unadvertised points.
+	 * So need to operate only with those returned from PCode.
+	 */
+	if (num_qgv_points > 0)
+		qgv_points = GENMASK(num_qgv_points - 1, 0);
+
+	if (num_psf_gv_points > 0)
+		psf_points = GENMASK(num_psf_gv_points - 1, 0);
+
+	return ICL_PCODE_REQ_QGV_PT(qgv_points) | ADLS_PCODE_REQ_PSF_PT(psf_points);
+}
+
+static int intel_bw_check_data_rate(struct intel_atomic_state *state, bool *changed)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_crtc_state *new_crtc_state, *old_crtc_state;
+	struct intel_crtc *crtc;
+	int i;
+
+	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
+					    new_crtc_state, i) {
+		unsigned int old_data_rate =
+			intel_bw_crtc_data_rate(old_crtc_state);
+		unsigned int new_data_rate =
+			intel_bw_crtc_data_rate(new_crtc_state);
+		unsigned int old_active_planes =
+			intel_bw_crtc_num_active_planes(old_crtc_state);
+		unsigned int new_active_planes =
+			intel_bw_crtc_num_active_planes(new_crtc_state);
+		struct intel_bw_state *new_bw_state;
+
+		/*
+		 * Avoid locking the bw state when
+		 * nothing significant has changed.
+		 */
+		if (old_data_rate == new_data_rate &&
+		    old_active_planes == new_active_planes)
+			continue;
+
+		new_bw_state = intel_atomic_get_bw_state(state);
+		if (IS_ERR(new_bw_state))
+			return PTR_ERR(new_bw_state);
+
+		new_bw_state->data_rate[crtc->pipe] = new_data_rate;
+		new_bw_state->num_active_planes[crtc->pipe] = new_active_planes;
+
+		*changed = true;
+
+		drm_dbg_kms(&i915->drm,
+			    "[CRTC:%d:%s] data rate %u num active planes %u\n",
+			    crtc->base.base.id, crtc->base.name,
+			    new_bw_state->data_rate[crtc->pipe],
+			    new_bw_state->num_active_planes[crtc->pipe]);
+	}
+
+	return 0;
+}
+
+int intel_bw_atomic_check(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	const struct intel_bw_state *old_bw_state;
+	struct intel_bw_state *new_bw_state;
+	unsigned int data_rate;
+	unsigned int num_active_planes;
+	int i, ret;
+	u16 qgv_points = 0, psf_points = 0;
+	unsigned int max_bw_point = 0, max_bw = 0;
+	unsigned int num_qgv_points = dev_priv->display.bw.max[0].num_qgv_points;
+	unsigned int num_psf_gv_points = dev_priv->display.bw.max[0].num_psf_gv_points;
+	bool changed = false;
+
+	/* FIXME earlier gens need some checks too */
+	if (DISPLAY_VER(dev_priv) < 11)
+		return 0;
+
+	ret = intel_bw_check_data_rate(state, &changed);
+	if (ret)
+		return ret;
+
+	old_bw_state = intel_atomic_get_old_bw_state(state);
+	new_bw_state = intel_atomic_get_new_bw_state(state);
+
+	if (new_bw_state &&
+	    intel_can_enable_sagv(dev_priv, old_bw_state) !=
+	    intel_can_enable_sagv(dev_priv, new_bw_state))
+		changed = true;
+
+	/*
+	 * If none of our inputs (data rates, number of active
+	 * planes, SAGV yes/no) changed then nothing to do here.
+	 */
+	if (!changed)
+		return 0;
+
+	ret = intel_atomic_lock_global_state(&new_bw_state->base);
+	if (ret)
+		return ret;
+
+	data_rate = intel_bw_data_rate(dev_priv, new_bw_state);
+	data_rate = DIV_ROUND_UP(data_rate, 1000);
+
+	num_active_planes = intel_bw_num_active_planes(dev_priv, new_bw_state);
+
+	for (i = 0; i < num_qgv_points; i++) {
+		unsigned int max_data_rate;
+
+		if (DISPLAY_VER(dev_priv) > 11)
+			max_data_rate = tgl_max_bw(dev_priv, num_active_planes, i);
+		else
+			max_data_rate = icl_max_bw(dev_priv, num_active_planes, i);
+		/*
+		 * We need to know which qgv point gives us
+		 * maximum bandwidth in order to disable SAGV
+		 * if we find that we exceed SAGV block time
+		 * with watermarks. By that moment we already
+		 * have those, as it is calculated earlier in
+		 * intel_atomic_check,
+		 */
+		if (max_data_rate > max_bw) {
+			max_bw_point = i;
+			max_bw = max_data_rate;
+		}
+		if (max_data_rate >= data_rate)
+			qgv_points |= BIT(i);
+
+		drm_dbg_kms(&dev_priv->drm, "QGV point %d: max bw %d required %d\n",
+			    i, max_data_rate, data_rate);
+	}
+
+	for (i = 0; i < num_psf_gv_points; i++) {
+		unsigned int max_data_rate = adl_psf_bw(dev_priv, i);
+
+		if (max_data_rate >= data_rate)
+			psf_points |= BIT(i);
+
+		drm_dbg_kms(&dev_priv->drm, "PSF GV point %d: max bw %d"
+			    " required %d\n",
+			    i, max_data_rate, data_rate);
+	}
+
+	/*
+	 * BSpec states that we always should have at least one allowed point
+	 * left, so if we couldn't - simply reject the configuration for obvious
+	 * reasons.
+	 */
+	if (qgv_points == 0) {
+		drm_dbg_kms(&dev_priv->drm, "No QGV points provide sufficient memory"
+			    " bandwidth %d for display configuration(%d active planes).\n",
+			    data_rate, num_active_planes);
+		return -EINVAL;
+	}
+
+	if (num_psf_gv_points > 0 && psf_points == 0) {
+		drm_dbg_kms(&dev_priv->drm, "No PSF GV points provide sufficient memory"
+			    " bandwidth %d for display configuration(%d active planes).\n",
+			    data_rate, num_active_planes);
+		return -EINVAL;
+	}
+
+	/*
+	 * Leave only single point with highest bandwidth, if
+	 * we can't enable SAGV due to the increased memory latency it may
+	 * cause.
+	 */
+	if (!intel_can_enable_sagv(dev_priv, new_bw_state)) {
+		qgv_points = BIT(max_bw_point);
+		drm_dbg_kms(&dev_priv->drm, "No SAGV, using single QGV point %d\n",
+			    max_bw_point);
+	}
+
+	/*
+	 * We store the ones which need to be masked as that is what PCode
+	 * actually accepts as a parameter.
+	 */
+	new_bw_state->qgv_points_mask =
+		~(ICL_PCODE_REQ_QGV_PT(qgv_points) |
+		  ADLS_PCODE_REQ_PSF_PT(psf_points)) &
+		icl_qgv_points_mask(dev_priv);
+
+	/*
+	 * If the actual mask had changed we need to make sure that
+	 * the commits are serialized(in case this is a nomodeset, nonblocking)
+	 */
+	if (new_bw_state->qgv_points_mask != old_bw_state->qgv_points_mask) {
+		ret = intel_atomic_serialize_global_state(&new_bw_state->base);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static struct intel_global_state *
+intel_bw_duplicate_state(struct intel_global_obj *obj)
+{
+	struct intel_bw_state *state;
+
+	state = kmemdup(obj->state, sizeof(*state), GFP_KERNEL);
+	if (!state)
+		return NULL;
+
+	return &state->base;
+}
+
+static void intel_bw_destroy_state(struct intel_global_obj *obj,
+				   struct intel_global_state *state)
+{
+	kfree(state);
+}
+
+static const struct intel_global_state_funcs intel_bw_funcs = {
+	.atomic_duplicate_state = intel_bw_duplicate_state,
+	.atomic_destroy_state = intel_bw_destroy_state,
+};
+
+int intel_bw_init(struct drm_i915_private *dev_priv)
+{
+	struct intel_bw_state *state;
+
+	state = kzalloc(sizeof(*state), GFP_KERNEL);
+	if (!state)
+		return -ENOMEM;
+
+	intel_atomic_global_obj_init(dev_priv, &dev_priv->display.bw.obj,
+				     &state->base, &intel_bw_funcs);
+
+	return 0;
+}
diff --git a/drivers/gpu/drm/i915/display/intel_bw.h b/drivers/gpu/drm/i915/display/intel_bw.h
new file mode 100644
index 000000000..cb7ee3a24
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_bw.h
@@ -0,0 +1,72 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_BW_H__
+#define __INTEL_BW_H__
+
+#include <drm/drm_atomic.h>
+
+#include "intel_display.h"
+#include "intel_display_power.h"
+#include "intel_global_state.h"
+
+struct drm_i915_private;
+struct intel_atomic_state;
+struct intel_crtc_state;
+
+struct intel_dbuf_bw {
+	unsigned int max_bw[I915_MAX_DBUF_SLICES];
+	u8 active_planes[I915_MAX_DBUF_SLICES];
+};
+
+struct intel_bw_state {
+	struct intel_global_state base;
+	struct intel_dbuf_bw dbuf_bw[I915_MAX_PIPES];
+
+	/*
+	 * Contains a bit mask, used to determine, whether correspondent
+	 * pipe allows SAGV or not.
+	 */
+	u8 pipe_sagv_reject;
+
+	/* bitmask of active pipes */
+	u8 active_pipes;
+
+	/*
+	 * Current QGV points mask, which restricts
+	 * some particular SAGV states, not to confuse
+	 * with pipe_sagv_mask.
+	 */
+	u16 qgv_points_mask;
+
+	int min_cdclk[I915_MAX_PIPES];
+	unsigned int data_rate[I915_MAX_PIPES];
+	u8 num_active_planes[I915_MAX_PIPES];
+};
+
+#define to_intel_bw_state(x) container_of((x), struct intel_bw_state, base)
+
+struct intel_bw_state *
+intel_atomic_get_old_bw_state(struct intel_atomic_state *state);
+
+struct intel_bw_state *
+intel_atomic_get_new_bw_state(struct intel_atomic_state *state);
+
+struct intel_bw_state *
+intel_atomic_get_bw_state(struct intel_atomic_state *state);
+
+void intel_bw_init_hw(struct drm_i915_private *dev_priv);
+int intel_bw_init(struct drm_i915_private *dev_priv);
+int intel_bw_atomic_check(struct intel_atomic_state *state);
+void intel_bw_crtc_update(struct intel_bw_state *bw_state,
+			  const struct intel_crtc_state *crtc_state);
+int icl_pcode_restrict_qgv_points(struct drm_i915_private *dev_priv,
+				  u32 points_mask);
+int intel_bw_calc_min_cdclk(struct intel_atomic_state *state,
+			    bool *need_cdclk_calc);
+int intel_bw_min_cdclk(struct drm_i915_private *i915,
+		       const struct intel_bw_state *bw_state);
+
+#endif /* __INTEL_BW_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c b/drivers/gpu/drm/i915/display/intel_cdclk.c
new file mode 100644
index 000000000..25dcdde5f
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_cdclk.c
@@ -0,0 +1,3283 @@
+/*
+ * Copyright © 2006-2017 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <linux/time.h>
+
+#include "hsw_ips.h"
+#include "intel_atomic.h"
+#include "intel_atomic_plane.h"
+#include "intel_audio.h"
+#include "intel_bw.h"
+#include "intel_cdclk.h"
+#include "intel_crtc.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_mchbar_regs.h"
+#include "intel_pci_config.h"
+#include "intel_pcode.h"
+#include "intel_psr.h"
+#include "vlv_sideband.h"
+
+/**
+ * DOC: CDCLK / RAWCLK
+ *
+ * The display engine uses several different clocks to do its work. There
+ * are two main clocks involved that aren't directly related to the actual
+ * pixel clock or any symbol/bit clock of the actual output port. These
+ * are the core display clock (CDCLK) and RAWCLK.
+ *
+ * CDCLK clocks most of the display pipe logic, and thus its frequency
+ * must be high enough to support the rate at which pixels are flowing
+ * through the pipes. Downscaling must also be accounted as that increases
+ * the effective pixel rate.
+ *
+ * On several platforms the CDCLK frequency can be changed dynamically
+ * to minimize power consumption for a given display configuration.
+ * Typically changes to the CDCLK frequency require all the display pipes
+ * to be shut down while the frequency is being changed.
+ *
+ * On SKL+ the DMC will toggle the CDCLK off/on during DC5/6 entry/exit.
+ * DMC will not change the active CDCLK frequency however, so that part
+ * will still be performed by the driver directly.
+ *
+ * RAWCLK is a fixed frequency clock, often used by various auxiliary
+ * blocks such as AUX CH or backlight PWM. Hence the only thing we
+ * really need to know about RAWCLK is its frequency so that various
+ * dividers can be programmed correctly.
+ */
+
+struct intel_cdclk_funcs {
+	void (*get_cdclk)(struct drm_i915_private *i915,
+			  struct intel_cdclk_config *cdclk_config);
+	void (*set_cdclk)(struct drm_i915_private *i915,
+			  const struct intel_cdclk_config *cdclk_config,
+			  enum pipe pipe);
+	int (*modeset_calc_cdclk)(struct intel_cdclk_state *state);
+	u8 (*calc_voltage_level)(int cdclk);
+};
+
+void intel_cdclk_get_cdclk(struct drm_i915_private *dev_priv,
+			   struct intel_cdclk_config *cdclk_config)
+{
+	dev_priv->display.funcs.cdclk->get_cdclk(dev_priv, cdclk_config);
+}
+
+static void intel_cdclk_set_cdclk(struct drm_i915_private *dev_priv,
+				  const struct intel_cdclk_config *cdclk_config,
+				  enum pipe pipe)
+{
+	dev_priv->display.funcs.cdclk->set_cdclk(dev_priv, cdclk_config, pipe);
+}
+
+static int intel_cdclk_modeset_calc_cdclk(struct drm_i915_private *dev_priv,
+					  struct intel_cdclk_state *cdclk_config)
+{
+	return dev_priv->display.funcs.cdclk->modeset_calc_cdclk(cdclk_config);
+}
+
+static u8 intel_cdclk_calc_voltage_level(struct drm_i915_private *dev_priv,
+					 int cdclk)
+{
+	return dev_priv->display.funcs.cdclk->calc_voltage_level(cdclk);
+}
+
+static void fixed_133mhz_get_cdclk(struct drm_i915_private *dev_priv,
+				   struct intel_cdclk_config *cdclk_config)
+{
+	cdclk_config->cdclk = 133333;
+}
+
+static void fixed_200mhz_get_cdclk(struct drm_i915_private *dev_priv,
+				   struct intel_cdclk_config *cdclk_config)
+{
+	cdclk_config->cdclk = 200000;
+}
+
+static void fixed_266mhz_get_cdclk(struct drm_i915_private *dev_priv,
+				   struct intel_cdclk_config *cdclk_config)
+{
+	cdclk_config->cdclk = 266667;
+}
+
+static void fixed_333mhz_get_cdclk(struct drm_i915_private *dev_priv,
+				   struct intel_cdclk_config *cdclk_config)
+{
+	cdclk_config->cdclk = 333333;
+}
+
+static void fixed_400mhz_get_cdclk(struct drm_i915_private *dev_priv,
+				   struct intel_cdclk_config *cdclk_config)
+{
+	cdclk_config->cdclk = 400000;
+}
+
+static void fixed_450mhz_get_cdclk(struct drm_i915_private *dev_priv,
+				   struct intel_cdclk_config *cdclk_config)
+{
+	cdclk_config->cdclk = 450000;
+}
+
+static void i85x_get_cdclk(struct drm_i915_private *dev_priv,
+			   struct intel_cdclk_config *cdclk_config)
+{
+	struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
+	u16 hpllcc = 0;
+
+	/*
+	 * 852GM/852GMV only supports 133 MHz and the HPLLCC
+	 * encoding is different :(
+	 * FIXME is this the right way to detect 852GM/852GMV?
+	 */
+	if (pdev->revision == 0x1) {
+		cdclk_config->cdclk = 133333;
+		return;
+	}
+
+	pci_bus_read_config_word(pdev->bus,
+				 PCI_DEVFN(0, 3), HPLLCC, &hpllcc);
+
+	/* Assume that the hardware is in the high speed state.  This
+	 * should be the default.
+	 */
+	switch (hpllcc & GC_CLOCK_CONTROL_MASK) {
+	case GC_CLOCK_133_200:
+	case GC_CLOCK_133_200_2:
+	case GC_CLOCK_100_200:
+		cdclk_config->cdclk = 200000;
+		break;
+	case GC_CLOCK_166_250:
+		cdclk_config->cdclk = 250000;
+		break;
+	case GC_CLOCK_100_133:
+		cdclk_config->cdclk = 133333;
+		break;
+	case GC_CLOCK_133_266:
+	case GC_CLOCK_133_266_2:
+	case GC_CLOCK_166_266:
+		cdclk_config->cdclk = 266667;
+		break;
+	}
+}
+
+static void i915gm_get_cdclk(struct drm_i915_private *dev_priv,
+			     struct intel_cdclk_config *cdclk_config)
+{
+	struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
+	u16 gcfgc = 0;
+
+	pci_read_config_word(pdev, GCFGC, &gcfgc);
+
+	if (gcfgc & GC_LOW_FREQUENCY_ENABLE) {
+		cdclk_config->cdclk = 133333;
+		return;
+	}
+
+	switch (gcfgc & GC_DISPLAY_CLOCK_MASK) {
+	case GC_DISPLAY_CLOCK_333_320_MHZ:
+		cdclk_config->cdclk = 333333;
+		break;
+	default:
+	case GC_DISPLAY_CLOCK_190_200_MHZ:
+		cdclk_config->cdclk = 190000;
+		break;
+	}
+}
+
+static void i945gm_get_cdclk(struct drm_i915_private *dev_priv,
+			     struct intel_cdclk_config *cdclk_config)
+{
+	struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
+	u16 gcfgc = 0;
+
+	pci_read_config_word(pdev, GCFGC, &gcfgc);
+
+	if (gcfgc & GC_LOW_FREQUENCY_ENABLE) {
+		cdclk_config->cdclk = 133333;
+		return;
+	}
+
+	switch (gcfgc & GC_DISPLAY_CLOCK_MASK) {
+	case GC_DISPLAY_CLOCK_333_320_MHZ:
+		cdclk_config->cdclk = 320000;
+		break;
+	default:
+	case GC_DISPLAY_CLOCK_190_200_MHZ:
+		cdclk_config->cdclk = 200000;
+		break;
+	}
+}
+
+static unsigned int intel_hpll_vco(struct drm_i915_private *dev_priv)
+{
+	static const unsigned int blb_vco[8] = {
+		[0] = 3200000,
+		[1] = 4000000,
+		[2] = 5333333,
+		[3] = 4800000,
+		[4] = 6400000,
+	};
+	static const unsigned int pnv_vco[8] = {
+		[0] = 3200000,
+		[1] = 4000000,
+		[2] = 5333333,
+		[3] = 4800000,
+		[4] = 2666667,
+	};
+	static const unsigned int cl_vco[8] = {
+		[0] = 3200000,
+		[1] = 4000000,
+		[2] = 5333333,
+		[3] = 6400000,
+		[4] = 3333333,
+		[5] = 3566667,
+		[6] = 4266667,
+	};
+	static const unsigned int elk_vco[8] = {
+		[0] = 3200000,
+		[1] = 4000000,
+		[2] = 5333333,
+		[3] = 4800000,
+	};
+	static const unsigned int ctg_vco[8] = {
+		[0] = 3200000,
+		[1] = 4000000,
+		[2] = 5333333,
+		[3] = 6400000,
+		[4] = 2666667,
+		[5] = 4266667,
+	};
+	const unsigned int *vco_table;
+	unsigned int vco;
+	u8 tmp = 0;
+
+	/* FIXME other chipsets? */
+	if (IS_GM45(dev_priv))
+		vco_table = ctg_vco;
+	else if (IS_G45(dev_priv))
+		vco_table = elk_vco;
+	else if (IS_I965GM(dev_priv))
+		vco_table = cl_vco;
+	else if (IS_PINEVIEW(dev_priv))
+		vco_table = pnv_vco;
+	else if (IS_G33(dev_priv))
+		vco_table = blb_vco;
+	else
+		return 0;
+
+	tmp = intel_de_read(dev_priv,
+			    IS_PINEVIEW(dev_priv) || IS_MOBILE(dev_priv) ? HPLLVCO_MOBILE : HPLLVCO);
+
+	vco = vco_table[tmp & 0x7];
+	if (vco == 0)
+		drm_err(&dev_priv->drm, "Bad HPLL VCO (HPLLVCO=0x%02x)\n",
+			tmp);
+	else
+		drm_dbg_kms(&dev_priv->drm, "HPLL VCO %u kHz\n", vco);
+
+	return vco;
+}
+
+static void g33_get_cdclk(struct drm_i915_private *dev_priv,
+			  struct intel_cdclk_config *cdclk_config)
+{
+	struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
+	static const u8 div_3200[] = { 12, 10,  8,  7, 5, 16 };
+	static const u8 div_4000[] = { 14, 12, 10,  8, 6, 20 };
+	static const u8 div_4800[] = { 20, 14, 12, 10, 8, 24 };
+	static const u8 div_5333[] = { 20, 16, 12, 12, 8, 28 };
+	const u8 *div_table;
+	unsigned int cdclk_sel;
+	u16 tmp = 0;
+
+	cdclk_config->vco = intel_hpll_vco(dev_priv);
+
+	pci_read_config_word(pdev, GCFGC, &tmp);
+
+	cdclk_sel = (tmp >> 4) & 0x7;
+
+	if (cdclk_sel >= ARRAY_SIZE(div_3200))
+		goto fail;
+
+	switch (cdclk_config->vco) {
+	case 3200000:
+		div_table = div_3200;
+		break;
+	case 4000000:
+		div_table = div_4000;
+		break;
+	case 4800000:
+		div_table = div_4800;
+		break;
+	case 5333333:
+		div_table = div_5333;
+		break;
+	default:
+		goto fail;
+	}
+
+	cdclk_config->cdclk = DIV_ROUND_CLOSEST(cdclk_config->vco,
+						div_table[cdclk_sel]);
+	return;
+
+fail:
+	drm_err(&dev_priv->drm,
+		"Unable to determine CDCLK. HPLL VCO=%u kHz, CFGC=0x%08x\n",
+		cdclk_config->vco, tmp);
+	cdclk_config->cdclk = 190476;
+}
+
+static void pnv_get_cdclk(struct drm_i915_private *dev_priv,
+			  struct intel_cdclk_config *cdclk_config)
+{
+	struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
+	u16 gcfgc = 0;
+
+	pci_read_config_word(pdev, GCFGC, &gcfgc);
+
+	switch (gcfgc & GC_DISPLAY_CLOCK_MASK) {
+	case GC_DISPLAY_CLOCK_267_MHZ_PNV:
+		cdclk_config->cdclk = 266667;
+		break;
+	case GC_DISPLAY_CLOCK_333_MHZ_PNV:
+		cdclk_config->cdclk = 333333;
+		break;
+	case GC_DISPLAY_CLOCK_444_MHZ_PNV:
+		cdclk_config->cdclk = 444444;
+		break;
+	case GC_DISPLAY_CLOCK_200_MHZ_PNV:
+		cdclk_config->cdclk = 200000;
+		break;
+	default:
+		drm_err(&dev_priv->drm,
+			"Unknown pnv display core clock 0x%04x\n", gcfgc);
+		fallthrough;
+	case GC_DISPLAY_CLOCK_133_MHZ_PNV:
+		cdclk_config->cdclk = 133333;
+		break;
+	case GC_DISPLAY_CLOCK_167_MHZ_PNV:
+		cdclk_config->cdclk = 166667;
+		break;
+	}
+}
+
+static void i965gm_get_cdclk(struct drm_i915_private *dev_priv,
+			     struct intel_cdclk_config *cdclk_config)
+{
+	struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
+	static const u8 div_3200[] = { 16, 10,  8 };
+	static const u8 div_4000[] = { 20, 12, 10 };
+	static const u8 div_5333[] = { 24, 16, 14 };
+	const u8 *div_table;
+	unsigned int cdclk_sel;
+	u16 tmp = 0;
+
+	cdclk_config->vco = intel_hpll_vco(dev_priv);
+
+	pci_read_config_word(pdev, GCFGC, &tmp);
+
+	cdclk_sel = ((tmp >> 8) & 0x1f) - 1;
+
+	if (cdclk_sel >= ARRAY_SIZE(div_3200))
+		goto fail;
+
+	switch (cdclk_config->vco) {
+	case 3200000:
+		div_table = div_3200;
+		break;
+	case 4000000:
+		div_table = div_4000;
+		break;
+	case 5333333:
+		div_table = div_5333;
+		break;
+	default:
+		goto fail;
+	}
+
+	cdclk_config->cdclk = DIV_ROUND_CLOSEST(cdclk_config->vco,
+						div_table[cdclk_sel]);
+	return;
+
+fail:
+	drm_err(&dev_priv->drm,
+		"Unable to determine CDCLK. HPLL VCO=%u kHz, CFGC=0x%04x\n",
+		cdclk_config->vco, tmp);
+	cdclk_config->cdclk = 200000;
+}
+
+static void gm45_get_cdclk(struct drm_i915_private *dev_priv,
+			   struct intel_cdclk_config *cdclk_config)
+{
+	struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
+	unsigned int cdclk_sel;
+	u16 tmp = 0;
+
+	cdclk_config->vco = intel_hpll_vco(dev_priv);
+
+	pci_read_config_word(pdev, GCFGC, &tmp);
+
+	cdclk_sel = (tmp >> 12) & 0x1;
+
+	switch (cdclk_config->vco) {
+	case 2666667:
+	case 4000000:
+	case 5333333:
+		cdclk_config->cdclk = cdclk_sel ? 333333 : 222222;
+		break;
+	case 3200000:
+		cdclk_config->cdclk = cdclk_sel ? 320000 : 228571;
+		break;
+	default:
+		drm_err(&dev_priv->drm,
+			"Unable to determine CDCLK. HPLL VCO=%u, CFGC=0x%04x\n",
+			cdclk_config->vco, tmp);
+		cdclk_config->cdclk = 222222;
+		break;
+	}
+}
+
+static void hsw_get_cdclk(struct drm_i915_private *dev_priv,
+			  struct intel_cdclk_config *cdclk_config)
+{
+	u32 lcpll = intel_de_read(dev_priv, LCPLL_CTL);
+	u32 freq = lcpll & LCPLL_CLK_FREQ_MASK;
+
+	if (lcpll & LCPLL_CD_SOURCE_FCLK)
+		cdclk_config->cdclk = 800000;
+	else if (intel_de_read(dev_priv, FUSE_STRAP) & HSW_CDCLK_LIMIT)
+		cdclk_config->cdclk = 450000;
+	else if (freq == LCPLL_CLK_FREQ_450)
+		cdclk_config->cdclk = 450000;
+	else if (IS_HSW_ULT(dev_priv))
+		cdclk_config->cdclk = 337500;
+	else
+		cdclk_config->cdclk = 540000;
+}
+
+static int vlv_calc_cdclk(struct drm_i915_private *dev_priv, int min_cdclk)
+{
+	int freq_320 = (dev_priv->hpll_freq <<  1) % 320000 != 0 ?
+		333333 : 320000;
+
+	/*
+	 * We seem to get an unstable or solid color picture at 200MHz.
+	 * Not sure what's wrong. For now use 200MHz only when all pipes
+	 * are off.
+	 */
+	if (IS_VALLEYVIEW(dev_priv) && min_cdclk > freq_320)
+		return 400000;
+	else if (min_cdclk > 266667)
+		return freq_320;
+	else if (min_cdclk > 0)
+		return 266667;
+	else
+		return 200000;
+}
+
+static u8 vlv_calc_voltage_level(struct drm_i915_private *dev_priv, int cdclk)
+{
+	if (IS_VALLEYVIEW(dev_priv)) {
+		if (cdclk >= 320000) /* jump to highest voltage for 400MHz too */
+			return 2;
+		else if (cdclk >= 266667)
+			return 1;
+		else
+			return 0;
+	} else {
+		/*
+		 * Specs are full of misinformation, but testing on actual
+		 * hardware has shown that we just need to write the desired
+		 * CCK divider into the Punit register.
+		 */
+		return DIV_ROUND_CLOSEST(dev_priv->hpll_freq << 1, cdclk) - 1;
+	}
+}
+
+static void vlv_get_cdclk(struct drm_i915_private *dev_priv,
+			  struct intel_cdclk_config *cdclk_config)
+{
+	u32 val;
+
+	vlv_iosf_sb_get(dev_priv,
+			BIT(VLV_IOSF_SB_CCK) | BIT(VLV_IOSF_SB_PUNIT));
+
+	cdclk_config->vco = vlv_get_hpll_vco(dev_priv);
+	cdclk_config->cdclk = vlv_get_cck_clock(dev_priv, "cdclk",
+						CCK_DISPLAY_CLOCK_CONTROL,
+						cdclk_config->vco);
+
+	val = vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM);
+
+	vlv_iosf_sb_put(dev_priv,
+			BIT(VLV_IOSF_SB_CCK) | BIT(VLV_IOSF_SB_PUNIT));
+
+	if (IS_VALLEYVIEW(dev_priv))
+		cdclk_config->voltage_level = (val & DSPFREQGUAR_MASK) >>
+			DSPFREQGUAR_SHIFT;
+	else
+		cdclk_config->voltage_level = (val & DSPFREQGUAR_MASK_CHV) >>
+			DSPFREQGUAR_SHIFT_CHV;
+}
+
+static void vlv_program_pfi_credits(struct drm_i915_private *dev_priv)
+{
+	unsigned int credits, default_credits;
+
+	if (IS_CHERRYVIEW(dev_priv))
+		default_credits = PFI_CREDIT(12);
+	else
+		default_credits = PFI_CREDIT(8);
+
+	if (dev_priv->display.cdclk.hw.cdclk >= dev_priv->czclk_freq) {
+		/* CHV suggested value is 31 or 63 */
+		if (IS_CHERRYVIEW(dev_priv))
+			credits = PFI_CREDIT_63;
+		else
+			credits = PFI_CREDIT(15);
+	} else {
+		credits = default_credits;
+	}
+
+	/*
+	 * WA - write default credits before re-programming
+	 * FIXME: should we also set the resend bit here?
+	 */
+	intel_de_write(dev_priv, GCI_CONTROL,
+		       VGA_FAST_MODE_DISABLE | default_credits);
+
+	intel_de_write(dev_priv, GCI_CONTROL,
+		       VGA_FAST_MODE_DISABLE | credits | PFI_CREDIT_RESEND);
+
+	/*
+	 * FIXME is this guaranteed to clear
+	 * immediately or should we poll for it?
+	 */
+	drm_WARN_ON(&dev_priv->drm,
+		    intel_de_read(dev_priv, GCI_CONTROL) & PFI_CREDIT_RESEND);
+}
+
+static void vlv_set_cdclk(struct drm_i915_private *dev_priv,
+			  const struct intel_cdclk_config *cdclk_config,
+			  enum pipe pipe)
+{
+	int cdclk = cdclk_config->cdclk;
+	u32 val, cmd = cdclk_config->voltage_level;
+	intel_wakeref_t wakeref;
+
+	switch (cdclk) {
+	case 400000:
+	case 333333:
+	case 320000:
+	case 266667:
+	case 200000:
+		break;
+	default:
+		MISSING_CASE(cdclk);
+		return;
+	}
+
+	/* There are cases where we can end up here with power domains
+	 * off and a CDCLK frequency other than the minimum, like when
+	 * issuing a modeset without actually changing any display after
+	 * a system suspend.  So grab the display core domain, which covers
+	 * the HW blocks needed for the following programming.
+	 */
+	wakeref = intel_display_power_get(dev_priv, POWER_DOMAIN_DISPLAY_CORE);
+
+	vlv_iosf_sb_get(dev_priv,
+			BIT(VLV_IOSF_SB_CCK) |
+			BIT(VLV_IOSF_SB_BUNIT) |
+			BIT(VLV_IOSF_SB_PUNIT));
+
+	val = vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM);
+	val &= ~DSPFREQGUAR_MASK;
+	val |= (cmd << DSPFREQGUAR_SHIFT);
+	vlv_punit_write(dev_priv, PUNIT_REG_DSPSSPM, val);
+	if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM) &
+		      DSPFREQSTAT_MASK) == (cmd << DSPFREQSTAT_SHIFT),
+		     50)) {
+		drm_err(&dev_priv->drm,
+			"timed out waiting for CDclk change\n");
+	}
+
+	if (cdclk == 400000) {
+		u32 divider;
+
+		divider = DIV_ROUND_CLOSEST(dev_priv->hpll_freq << 1,
+					    cdclk) - 1;
+
+		/* adjust cdclk divider */
+		val = vlv_cck_read(dev_priv, CCK_DISPLAY_CLOCK_CONTROL);
+		val &= ~CCK_FREQUENCY_VALUES;
+		val |= divider;
+		vlv_cck_write(dev_priv, CCK_DISPLAY_CLOCK_CONTROL, val);
+
+		if (wait_for((vlv_cck_read(dev_priv, CCK_DISPLAY_CLOCK_CONTROL) &
+			      CCK_FREQUENCY_STATUS) == (divider << CCK_FREQUENCY_STATUS_SHIFT),
+			     50))
+			drm_err(&dev_priv->drm,
+				"timed out waiting for CDclk change\n");
+	}
+
+	/* adjust self-refresh exit latency value */
+	val = vlv_bunit_read(dev_priv, BUNIT_REG_BISOC);
+	val &= ~0x7f;
+
+	/*
+	 * For high bandwidth configs, we set a higher latency in the bunit
+	 * so that the core display fetch happens in time to avoid underruns.
+	 */
+	if (cdclk == 400000)
+		val |= 4500 / 250; /* 4.5 usec */
+	else
+		val |= 3000 / 250; /* 3.0 usec */
+	vlv_bunit_write(dev_priv, BUNIT_REG_BISOC, val);
+
+	vlv_iosf_sb_put(dev_priv,
+			BIT(VLV_IOSF_SB_CCK) |
+			BIT(VLV_IOSF_SB_BUNIT) |
+			BIT(VLV_IOSF_SB_PUNIT));
+
+	intel_update_cdclk(dev_priv);
+
+	vlv_program_pfi_credits(dev_priv);
+
+	intel_display_power_put(dev_priv, POWER_DOMAIN_DISPLAY_CORE, wakeref);
+}
+
+static void chv_set_cdclk(struct drm_i915_private *dev_priv,
+			  const struct intel_cdclk_config *cdclk_config,
+			  enum pipe pipe)
+{
+	int cdclk = cdclk_config->cdclk;
+	u32 val, cmd = cdclk_config->voltage_level;
+	intel_wakeref_t wakeref;
+
+	switch (cdclk) {
+	case 333333:
+	case 320000:
+	case 266667:
+	case 200000:
+		break;
+	default:
+		MISSING_CASE(cdclk);
+		return;
+	}
+
+	/* There are cases where we can end up here with power domains
+	 * off and a CDCLK frequency other than the minimum, like when
+	 * issuing a modeset without actually changing any display after
+	 * a system suspend.  So grab the display core domain, which covers
+	 * the HW blocks needed for the following programming.
+	 */
+	wakeref = intel_display_power_get(dev_priv, POWER_DOMAIN_DISPLAY_CORE);
+
+	vlv_punit_get(dev_priv);
+	val = vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM);
+	val &= ~DSPFREQGUAR_MASK_CHV;
+	val |= (cmd << DSPFREQGUAR_SHIFT_CHV);
+	vlv_punit_write(dev_priv, PUNIT_REG_DSPSSPM, val);
+	if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM) &
+		      DSPFREQSTAT_MASK_CHV) == (cmd << DSPFREQSTAT_SHIFT_CHV),
+		     50)) {
+		drm_err(&dev_priv->drm,
+			"timed out waiting for CDclk change\n");
+	}
+
+	vlv_punit_put(dev_priv);
+
+	intel_update_cdclk(dev_priv);
+
+	vlv_program_pfi_credits(dev_priv);
+
+	intel_display_power_put(dev_priv, POWER_DOMAIN_DISPLAY_CORE, wakeref);
+}
+
+static int bdw_calc_cdclk(int min_cdclk)
+{
+	if (min_cdclk > 540000)
+		return 675000;
+	else if (min_cdclk > 450000)
+		return 540000;
+	else if (min_cdclk > 337500)
+		return 450000;
+	else
+		return 337500;
+}
+
+static u8 bdw_calc_voltage_level(int cdclk)
+{
+	switch (cdclk) {
+	default:
+	case 337500:
+		return 2;
+	case 450000:
+		return 0;
+	case 540000:
+		return 1;
+	case 675000:
+		return 3;
+	}
+}
+
+static void bdw_get_cdclk(struct drm_i915_private *dev_priv,
+			  struct intel_cdclk_config *cdclk_config)
+{
+	u32 lcpll = intel_de_read(dev_priv, LCPLL_CTL);
+	u32 freq = lcpll & LCPLL_CLK_FREQ_MASK;
+
+	if (lcpll & LCPLL_CD_SOURCE_FCLK)
+		cdclk_config->cdclk = 800000;
+	else if (intel_de_read(dev_priv, FUSE_STRAP) & HSW_CDCLK_LIMIT)
+		cdclk_config->cdclk = 450000;
+	else if (freq == LCPLL_CLK_FREQ_450)
+		cdclk_config->cdclk = 450000;
+	else if (freq == LCPLL_CLK_FREQ_54O_BDW)
+		cdclk_config->cdclk = 540000;
+	else if (freq == LCPLL_CLK_FREQ_337_5_BDW)
+		cdclk_config->cdclk = 337500;
+	else
+		cdclk_config->cdclk = 675000;
+
+	/*
+	 * Can't read this out :( Let's assume it's
+	 * at least what the CDCLK frequency requires.
+	 */
+	cdclk_config->voltage_level =
+		bdw_calc_voltage_level(cdclk_config->cdclk);
+}
+
+static u32 bdw_cdclk_freq_sel(int cdclk)
+{
+	switch (cdclk) {
+	default:
+		MISSING_CASE(cdclk);
+		fallthrough;
+	case 337500:
+		return LCPLL_CLK_FREQ_337_5_BDW;
+	case 450000:
+		return LCPLL_CLK_FREQ_450;
+	case 540000:
+		return LCPLL_CLK_FREQ_54O_BDW;
+	case 675000:
+		return LCPLL_CLK_FREQ_675_BDW;
+	}
+}
+
+static void bdw_set_cdclk(struct drm_i915_private *dev_priv,
+			  const struct intel_cdclk_config *cdclk_config,
+			  enum pipe pipe)
+{
+	int cdclk = cdclk_config->cdclk;
+	int ret;
+
+	if (drm_WARN(&dev_priv->drm,
+		     (intel_de_read(dev_priv, LCPLL_CTL) &
+		      (LCPLL_PLL_DISABLE | LCPLL_PLL_LOCK |
+		       LCPLL_CD_CLOCK_DISABLE | LCPLL_ROOT_CD_CLOCK_DISABLE |
+		       LCPLL_CD2X_CLOCK_DISABLE | LCPLL_POWER_DOWN_ALLOW |
+		       LCPLL_CD_SOURCE_FCLK)) != LCPLL_PLL_LOCK,
+		     "trying to change cdclk frequency with cdclk not enabled\n"))
+		return;
+
+	ret = snb_pcode_write(&dev_priv->uncore, BDW_PCODE_DISPLAY_FREQ_CHANGE_REQ, 0x0);
+	if (ret) {
+		drm_err(&dev_priv->drm,
+			"failed to inform pcode about cdclk change\n");
+		return;
+	}
+
+	intel_de_rmw(dev_priv, LCPLL_CTL,
+		     0, LCPLL_CD_SOURCE_FCLK);
+
+	/*
+	 * According to the spec, it should be enough to poll for this 1 us.
+	 * However, extensive testing shows that this can take longer.
+	 */
+	if (wait_for_us(intel_de_read(dev_priv, LCPLL_CTL) &
+			LCPLL_CD_SOURCE_FCLK_DONE, 100))
+		drm_err(&dev_priv->drm, "Switching to FCLK failed\n");
+
+	intel_de_rmw(dev_priv, LCPLL_CTL,
+		     LCPLL_CLK_FREQ_MASK, bdw_cdclk_freq_sel(cdclk));
+
+	intel_de_rmw(dev_priv, LCPLL_CTL,
+		     LCPLL_CD_SOURCE_FCLK, 0);
+
+	if (wait_for_us((intel_de_read(dev_priv, LCPLL_CTL) &
+			 LCPLL_CD_SOURCE_FCLK_DONE) == 0, 1))
+		drm_err(&dev_priv->drm, "Switching back to LCPLL failed\n");
+
+	snb_pcode_write(&dev_priv->uncore, HSW_PCODE_DE_WRITE_FREQ_REQ,
+			cdclk_config->voltage_level);
+
+	intel_de_write(dev_priv, CDCLK_FREQ,
+		       DIV_ROUND_CLOSEST(cdclk, 1000) - 1);
+
+	intel_update_cdclk(dev_priv);
+}
+
+static int skl_calc_cdclk(int min_cdclk, int vco)
+{
+	if (vco == 8640000) {
+		if (min_cdclk > 540000)
+			return 617143;
+		else if (min_cdclk > 432000)
+			return 540000;
+		else if (min_cdclk > 308571)
+			return 432000;
+		else
+			return 308571;
+	} else {
+		if (min_cdclk > 540000)
+			return 675000;
+		else if (min_cdclk > 450000)
+			return 540000;
+		else if (min_cdclk > 337500)
+			return 450000;
+		else
+			return 337500;
+	}
+}
+
+static u8 skl_calc_voltage_level(int cdclk)
+{
+	if (cdclk > 540000)
+		return 3;
+	else if (cdclk > 450000)
+		return 2;
+	else if (cdclk > 337500)
+		return 1;
+	else
+		return 0;
+}
+
+static void skl_dpll0_update(struct drm_i915_private *dev_priv,
+			     struct intel_cdclk_config *cdclk_config)
+{
+	u32 val;
+
+	cdclk_config->ref = 24000;
+	cdclk_config->vco = 0;
+
+	val = intel_de_read(dev_priv, LCPLL1_CTL);
+	if ((val & LCPLL_PLL_ENABLE) == 0)
+		return;
+
+	if (drm_WARN_ON(&dev_priv->drm, (val & LCPLL_PLL_LOCK) == 0))
+		return;
+
+	val = intel_de_read(dev_priv, DPLL_CTRL1);
+
+	if (drm_WARN_ON(&dev_priv->drm,
+			(val & (DPLL_CTRL1_HDMI_MODE(SKL_DPLL0) |
+				DPLL_CTRL1_SSC(SKL_DPLL0) |
+				DPLL_CTRL1_OVERRIDE(SKL_DPLL0))) !=
+			DPLL_CTRL1_OVERRIDE(SKL_DPLL0)))
+		return;
+
+	switch (val & DPLL_CTRL1_LINK_RATE_MASK(SKL_DPLL0)) {
+	case DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_810, SKL_DPLL0):
+	case DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1350, SKL_DPLL0):
+	case DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1620, SKL_DPLL0):
+	case DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_2700, SKL_DPLL0):
+		cdclk_config->vco = 8100000;
+		break;
+	case DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1080, SKL_DPLL0):
+	case DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_2160, SKL_DPLL0):
+		cdclk_config->vco = 8640000;
+		break;
+	default:
+		MISSING_CASE(val & DPLL_CTRL1_LINK_RATE_MASK(SKL_DPLL0));
+		break;
+	}
+}
+
+static void skl_get_cdclk(struct drm_i915_private *dev_priv,
+			  struct intel_cdclk_config *cdclk_config)
+{
+	u32 cdctl;
+
+	skl_dpll0_update(dev_priv, cdclk_config);
+
+	cdclk_config->cdclk = cdclk_config->bypass = cdclk_config->ref;
+
+	if (cdclk_config->vco == 0)
+		goto out;
+
+	cdctl = intel_de_read(dev_priv, CDCLK_CTL);
+
+	if (cdclk_config->vco == 8640000) {
+		switch (cdctl & CDCLK_FREQ_SEL_MASK) {
+		case CDCLK_FREQ_450_432:
+			cdclk_config->cdclk = 432000;
+			break;
+		case CDCLK_FREQ_337_308:
+			cdclk_config->cdclk = 308571;
+			break;
+		case CDCLK_FREQ_540:
+			cdclk_config->cdclk = 540000;
+			break;
+		case CDCLK_FREQ_675_617:
+			cdclk_config->cdclk = 617143;
+			break;
+		default:
+			MISSING_CASE(cdctl & CDCLK_FREQ_SEL_MASK);
+			break;
+		}
+	} else {
+		switch (cdctl & CDCLK_FREQ_SEL_MASK) {
+		case CDCLK_FREQ_450_432:
+			cdclk_config->cdclk = 450000;
+			break;
+		case CDCLK_FREQ_337_308:
+			cdclk_config->cdclk = 337500;
+			break;
+		case CDCLK_FREQ_540:
+			cdclk_config->cdclk = 540000;
+			break;
+		case CDCLK_FREQ_675_617:
+			cdclk_config->cdclk = 675000;
+			break;
+		default:
+			MISSING_CASE(cdctl & CDCLK_FREQ_SEL_MASK);
+			break;
+		}
+	}
+
+ out:
+	/*
+	 * Can't read this out :( Let's assume it's
+	 * at least what the CDCLK frequency requires.
+	 */
+	cdclk_config->voltage_level =
+		skl_calc_voltage_level(cdclk_config->cdclk);
+}
+
+/* convert from kHz to .1 fixpoint MHz with -1MHz offset */
+static int skl_cdclk_decimal(int cdclk)
+{
+	return DIV_ROUND_CLOSEST(cdclk - 1000, 500);
+}
+
+static void skl_set_preferred_cdclk_vco(struct drm_i915_private *dev_priv,
+					int vco)
+{
+	bool changed = dev_priv->skl_preferred_vco_freq != vco;
+
+	dev_priv->skl_preferred_vco_freq = vco;
+
+	if (changed)
+		intel_update_max_cdclk(dev_priv);
+}
+
+static u32 skl_dpll0_link_rate(struct drm_i915_private *dev_priv, int vco)
+{
+	drm_WARN_ON(&dev_priv->drm, vco != 8100000 && vco != 8640000);
+
+	/*
+	 * We always enable DPLL0 with the lowest link rate possible, but still
+	 * taking into account the VCO required to operate the eDP panel at the
+	 * desired frequency. The usual DP link rates operate with a VCO of
+	 * 8100 while the eDP 1.4 alternate link rates need a VCO of 8640.
+	 * The modeset code is responsible for the selection of the exact link
+	 * rate later on, with the constraint of choosing a frequency that
+	 * works with vco.
+	 */
+	if (vco == 8640000)
+		return DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1080, SKL_DPLL0);
+	else
+		return DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_810, SKL_DPLL0);
+}
+
+static void skl_dpll0_enable(struct drm_i915_private *dev_priv, int vco)
+{
+	intel_de_rmw(dev_priv, DPLL_CTRL1,
+		     DPLL_CTRL1_HDMI_MODE(SKL_DPLL0) |
+		     DPLL_CTRL1_SSC(SKL_DPLL0) |
+		     DPLL_CTRL1_LINK_RATE_MASK(SKL_DPLL0),
+		     DPLL_CTRL1_OVERRIDE(SKL_DPLL0) |
+		     skl_dpll0_link_rate(dev_priv, vco));
+	intel_de_posting_read(dev_priv, DPLL_CTRL1);
+
+	intel_de_rmw(dev_priv, LCPLL1_CTL,
+		     0, LCPLL_PLL_ENABLE);
+
+	if (intel_de_wait_for_set(dev_priv, LCPLL1_CTL, LCPLL_PLL_LOCK, 5))
+		drm_err(&dev_priv->drm, "DPLL0 not locked\n");
+
+	dev_priv->display.cdclk.hw.vco = vco;
+
+	/* We'll want to keep using the current vco from now on. */
+	skl_set_preferred_cdclk_vco(dev_priv, vco);
+}
+
+static void skl_dpll0_disable(struct drm_i915_private *dev_priv)
+{
+	intel_de_rmw(dev_priv, LCPLL1_CTL,
+		     LCPLL_PLL_ENABLE, 0);
+
+	if (intel_de_wait_for_clear(dev_priv, LCPLL1_CTL, LCPLL_PLL_LOCK, 1))
+		drm_err(&dev_priv->drm, "Couldn't disable DPLL0\n");
+
+	dev_priv->display.cdclk.hw.vco = 0;
+}
+
+static u32 skl_cdclk_freq_sel(struct drm_i915_private *dev_priv,
+			      int cdclk, int vco)
+{
+	switch (cdclk) {
+	default:
+		drm_WARN_ON(&dev_priv->drm,
+			    cdclk != dev_priv->display.cdclk.hw.bypass);
+		drm_WARN_ON(&dev_priv->drm, vco != 0);
+		fallthrough;
+	case 308571:
+	case 337500:
+		return CDCLK_FREQ_337_308;
+	case 450000:
+	case 432000:
+		return CDCLK_FREQ_450_432;
+	case 540000:
+		return CDCLK_FREQ_540;
+	case 617143:
+	case 675000:
+		return CDCLK_FREQ_675_617;
+	}
+}
+
+static void skl_set_cdclk(struct drm_i915_private *dev_priv,
+			  const struct intel_cdclk_config *cdclk_config,
+			  enum pipe pipe)
+{
+	int cdclk = cdclk_config->cdclk;
+	int vco = cdclk_config->vco;
+	u32 freq_select, cdclk_ctl;
+	int ret;
+
+	/*
+	 * Based on WA#1183 CDCLK rates 308 and 617MHz CDCLK rates are
+	 * unsupported on SKL. In theory this should never happen since only
+	 * the eDP1.4 2.16 and 4.32Gbps rates require it, but eDP1.4 is not
+	 * supported on SKL either, see the above WA. WARN whenever trying to
+	 * use the corresponding VCO freq as that always leads to using the
+	 * minimum 308MHz CDCLK.
+	 */
+	drm_WARN_ON_ONCE(&dev_priv->drm,
+			 IS_SKYLAKE(dev_priv) && vco == 8640000);
+
+	ret = skl_pcode_request(&dev_priv->uncore, SKL_PCODE_CDCLK_CONTROL,
+				SKL_CDCLK_PREPARE_FOR_CHANGE,
+				SKL_CDCLK_READY_FOR_CHANGE,
+				SKL_CDCLK_READY_FOR_CHANGE, 3);
+	if (ret) {
+		drm_err(&dev_priv->drm,
+			"Failed to inform PCU about cdclk change (%d)\n", ret);
+		return;
+	}
+
+	freq_select = skl_cdclk_freq_sel(dev_priv, cdclk, vco);
+
+	if (dev_priv->display.cdclk.hw.vco != 0 &&
+	    dev_priv->display.cdclk.hw.vco != vco)
+		skl_dpll0_disable(dev_priv);
+
+	cdclk_ctl = intel_de_read(dev_priv, CDCLK_CTL);
+
+	if (dev_priv->display.cdclk.hw.vco != vco) {
+		/* Wa Display #1183: skl,kbl,cfl */
+		cdclk_ctl &= ~(CDCLK_FREQ_SEL_MASK | CDCLK_FREQ_DECIMAL_MASK);
+		cdclk_ctl |= freq_select | skl_cdclk_decimal(cdclk);
+		intel_de_write(dev_priv, CDCLK_CTL, cdclk_ctl);
+	}
+
+	/* Wa Display #1183: skl,kbl,cfl */
+	cdclk_ctl |= CDCLK_DIVMUX_CD_OVERRIDE;
+	intel_de_write(dev_priv, CDCLK_CTL, cdclk_ctl);
+	intel_de_posting_read(dev_priv, CDCLK_CTL);
+
+	if (dev_priv->display.cdclk.hw.vco != vco)
+		skl_dpll0_enable(dev_priv, vco);
+
+	/* Wa Display #1183: skl,kbl,cfl */
+	cdclk_ctl &= ~(CDCLK_FREQ_SEL_MASK | CDCLK_FREQ_DECIMAL_MASK);
+	intel_de_write(dev_priv, CDCLK_CTL, cdclk_ctl);
+
+	cdclk_ctl |= freq_select | skl_cdclk_decimal(cdclk);
+	intel_de_write(dev_priv, CDCLK_CTL, cdclk_ctl);
+
+	/* Wa Display #1183: skl,kbl,cfl */
+	cdclk_ctl &= ~CDCLK_DIVMUX_CD_OVERRIDE;
+	intel_de_write(dev_priv, CDCLK_CTL, cdclk_ctl);
+	intel_de_posting_read(dev_priv, CDCLK_CTL);
+
+	/* inform PCU of the change */
+	snb_pcode_write(&dev_priv->uncore, SKL_PCODE_CDCLK_CONTROL,
+			cdclk_config->voltage_level);
+
+	intel_update_cdclk(dev_priv);
+}
+
+static void skl_sanitize_cdclk(struct drm_i915_private *dev_priv)
+{
+	u32 cdctl, expected;
+
+	/*
+	 * check if the pre-os initialized the display
+	 * There is SWF18 scratchpad register defined which is set by the
+	 * pre-os which can be used by the OS drivers to check the status
+	 */
+	if ((intel_de_read(dev_priv, SWF_ILK(0x18)) & 0x00FFFFFF) == 0)
+		goto sanitize;
+
+	intel_update_cdclk(dev_priv);
+	intel_cdclk_dump_config(dev_priv, &dev_priv->display.cdclk.hw, "Current CDCLK");
+
+	/* Is PLL enabled and locked ? */
+	if (dev_priv->display.cdclk.hw.vco == 0 ||
+	    dev_priv->display.cdclk.hw.cdclk == dev_priv->display.cdclk.hw.bypass)
+		goto sanitize;
+
+	/* DPLL okay; verify the cdclock
+	 *
+	 * Noticed in some instances that the freq selection is correct but
+	 * decimal part is programmed wrong from BIOS where pre-os does not
+	 * enable display. Verify the same as well.
+	 */
+	cdctl = intel_de_read(dev_priv, CDCLK_CTL);
+	expected = (cdctl & CDCLK_FREQ_SEL_MASK) |
+		skl_cdclk_decimal(dev_priv->display.cdclk.hw.cdclk);
+	if (cdctl == expected)
+		/* All well; nothing to sanitize */
+		return;
+
+sanitize:
+	drm_dbg_kms(&dev_priv->drm, "Sanitizing cdclk programmed by pre-os\n");
+
+	/* force cdclk programming */
+	dev_priv->display.cdclk.hw.cdclk = 0;
+	/* force full PLL disable + enable */
+	dev_priv->display.cdclk.hw.vco = -1;
+}
+
+static void skl_cdclk_init_hw(struct drm_i915_private *dev_priv)
+{
+	struct intel_cdclk_config cdclk_config;
+
+	skl_sanitize_cdclk(dev_priv);
+
+	if (dev_priv->display.cdclk.hw.cdclk != 0 &&
+	    dev_priv->display.cdclk.hw.vco != 0) {
+		/*
+		 * Use the current vco as our initial
+		 * guess as to what the preferred vco is.
+		 */
+		if (dev_priv->skl_preferred_vco_freq == 0)
+			skl_set_preferred_cdclk_vco(dev_priv,
+						    dev_priv->display.cdclk.hw.vco);
+		return;
+	}
+
+	cdclk_config = dev_priv->display.cdclk.hw;
+
+	cdclk_config.vco = dev_priv->skl_preferred_vco_freq;
+	if (cdclk_config.vco == 0)
+		cdclk_config.vco = 8100000;
+	cdclk_config.cdclk = skl_calc_cdclk(0, cdclk_config.vco);
+	cdclk_config.voltage_level = skl_calc_voltage_level(cdclk_config.cdclk);
+
+	skl_set_cdclk(dev_priv, &cdclk_config, INVALID_PIPE);
+}
+
+static void skl_cdclk_uninit_hw(struct drm_i915_private *dev_priv)
+{
+	struct intel_cdclk_config cdclk_config = dev_priv->display.cdclk.hw;
+
+	cdclk_config.cdclk = cdclk_config.bypass;
+	cdclk_config.vco = 0;
+	cdclk_config.voltage_level = skl_calc_voltage_level(cdclk_config.cdclk);
+
+	skl_set_cdclk(dev_priv, &cdclk_config, INVALID_PIPE);
+}
+
+static bool has_cdclk_squasher(struct drm_i915_private *i915)
+{
+	return IS_DG2(i915);
+}
+
+struct intel_cdclk_vals {
+	u32 cdclk;
+	u16 refclk;
+	u16 waveform;
+	u8 divider;	/* CD2X divider * 2 */
+	u8 ratio;
+};
+
+static const struct intel_cdclk_vals bxt_cdclk_table[] = {
+	{ .refclk = 19200, .cdclk = 144000, .divider = 8, .ratio = 60 },
+	{ .refclk = 19200, .cdclk = 288000, .divider = 4, .ratio = 60 },
+	{ .refclk = 19200, .cdclk = 384000, .divider = 3, .ratio = 60 },
+	{ .refclk = 19200, .cdclk = 576000, .divider = 2, .ratio = 60 },
+	{ .refclk = 19200, .cdclk = 624000, .divider = 2, .ratio = 65 },
+	{}
+};
+
+static const struct intel_cdclk_vals glk_cdclk_table[] = {
+	{ .refclk = 19200, .cdclk =  79200, .divider = 8, .ratio = 33 },
+	{ .refclk = 19200, .cdclk = 158400, .divider = 4, .ratio = 33 },
+	{ .refclk = 19200, .cdclk = 316800, .divider = 2, .ratio = 33 },
+	{}
+};
+
+static const struct intel_cdclk_vals icl_cdclk_table[] = {
+	{ .refclk = 19200, .cdclk = 172800, .divider = 2, .ratio = 18 },
+	{ .refclk = 19200, .cdclk = 192000, .divider = 2, .ratio = 20 },
+	{ .refclk = 19200, .cdclk = 307200, .divider = 2, .ratio = 32 },
+	{ .refclk = 19200, .cdclk = 326400, .divider = 4, .ratio = 68 },
+	{ .refclk = 19200, .cdclk = 556800, .divider = 2, .ratio = 58 },
+	{ .refclk = 19200, .cdclk = 652800, .divider = 2, .ratio = 68 },
+
+	{ .refclk = 24000, .cdclk = 180000, .divider = 2, .ratio = 15 },
+	{ .refclk = 24000, .cdclk = 192000, .divider = 2, .ratio = 16 },
+	{ .refclk = 24000, .cdclk = 312000, .divider = 2, .ratio = 26 },
+	{ .refclk = 24000, .cdclk = 324000, .divider = 4, .ratio = 54 },
+	{ .refclk = 24000, .cdclk = 552000, .divider = 2, .ratio = 46 },
+	{ .refclk = 24000, .cdclk = 648000, .divider = 2, .ratio = 54 },
+
+	{ .refclk = 38400, .cdclk = 172800, .divider = 2, .ratio =  9 },
+	{ .refclk = 38400, .cdclk = 192000, .divider = 2, .ratio = 10 },
+	{ .refclk = 38400, .cdclk = 307200, .divider = 2, .ratio = 16 },
+	{ .refclk = 38400, .cdclk = 326400, .divider = 4, .ratio = 34 },
+	{ .refclk = 38400, .cdclk = 556800, .divider = 2, .ratio = 29 },
+	{ .refclk = 38400, .cdclk = 652800, .divider = 2, .ratio = 34 },
+	{}
+};
+
+static const struct intel_cdclk_vals rkl_cdclk_table[] = {
+	{ .refclk = 19200, .cdclk = 172800, .divider = 4, .ratio =  36 },
+	{ .refclk = 19200, .cdclk = 192000, .divider = 4, .ratio =  40 },
+	{ .refclk = 19200, .cdclk = 307200, .divider = 4, .ratio =  64 },
+	{ .refclk = 19200, .cdclk = 326400, .divider = 8, .ratio = 136 },
+	{ .refclk = 19200, .cdclk = 556800, .divider = 4, .ratio = 116 },
+	{ .refclk = 19200, .cdclk = 652800, .divider = 4, .ratio = 136 },
+
+	{ .refclk = 24000, .cdclk = 180000, .divider = 4, .ratio =  30 },
+	{ .refclk = 24000, .cdclk = 192000, .divider = 4, .ratio =  32 },
+	{ .refclk = 24000, .cdclk = 312000, .divider = 4, .ratio =  52 },
+	{ .refclk = 24000, .cdclk = 324000, .divider = 8, .ratio = 108 },
+	{ .refclk = 24000, .cdclk = 552000, .divider = 4, .ratio =  92 },
+	{ .refclk = 24000, .cdclk = 648000, .divider = 4, .ratio = 108 },
+
+	{ .refclk = 38400, .cdclk = 172800, .divider = 4, .ratio = 18 },
+	{ .refclk = 38400, .cdclk = 192000, .divider = 4, .ratio = 20 },
+	{ .refclk = 38400, .cdclk = 307200, .divider = 4, .ratio = 32 },
+	{ .refclk = 38400, .cdclk = 326400, .divider = 8, .ratio = 68 },
+	{ .refclk = 38400, .cdclk = 556800, .divider = 4, .ratio = 58 },
+	{ .refclk = 38400, .cdclk = 652800, .divider = 4, .ratio = 68 },
+	{}
+};
+
+static const struct intel_cdclk_vals adlp_a_step_cdclk_table[] = {
+	{ .refclk = 19200, .cdclk = 307200, .divider = 2, .ratio = 32 },
+	{ .refclk = 19200, .cdclk = 556800, .divider = 2, .ratio = 58 },
+	{ .refclk = 19200, .cdclk = 652800, .divider = 2, .ratio = 68 },
+
+	{ .refclk = 24000, .cdclk = 312000, .divider = 2, .ratio = 26 },
+	{ .refclk = 24000, .cdclk = 552000, .divider = 2, .ratio = 46 },
+	{ .refclk = 24400, .cdclk = 648000, .divider = 2, .ratio = 54 },
+
+	{ .refclk = 38400, .cdclk = 307200, .divider = 2, .ratio = 16 },
+	{ .refclk = 38400, .cdclk = 556800, .divider = 2, .ratio = 29 },
+	{ .refclk = 38400, .cdclk = 652800, .divider = 2, .ratio = 34 },
+	{}
+};
+
+static const struct intel_cdclk_vals adlp_cdclk_table[] = {
+	{ .refclk = 19200, .cdclk = 172800, .divider = 3, .ratio = 27 },
+	{ .refclk = 19200, .cdclk = 192000, .divider = 2, .ratio = 20 },
+	{ .refclk = 19200, .cdclk = 307200, .divider = 2, .ratio = 32 },
+	{ .refclk = 19200, .cdclk = 556800, .divider = 2, .ratio = 58 },
+	{ .refclk = 19200, .cdclk = 652800, .divider = 2, .ratio = 68 },
+
+	{ .refclk = 24000, .cdclk = 176000, .divider = 3, .ratio = 22 },
+	{ .refclk = 24000, .cdclk = 192000, .divider = 2, .ratio = 16 },
+	{ .refclk = 24000, .cdclk = 312000, .divider = 2, .ratio = 26 },
+	{ .refclk = 24000, .cdclk = 552000, .divider = 2, .ratio = 46 },
+	{ .refclk = 24000, .cdclk = 648000, .divider = 2, .ratio = 54 },
+
+	{ .refclk = 38400, .cdclk = 179200, .divider = 3, .ratio = 14 },
+	{ .refclk = 38400, .cdclk = 192000, .divider = 2, .ratio = 10 },
+	{ .refclk = 38400, .cdclk = 307200, .divider = 2, .ratio = 16 },
+	{ .refclk = 38400, .cdclk = 556800, .divider = 2, .ratio = 29 },
+	{ .refclk = 38400, .cdclk = 652800, .divider = 2, .ratio = 34 },
+	{}
+};
+
+static const struct intel_cdclk_vals dg2_cdclk_table[] = {
+	{ .refclk = 38400, .cdclk = 163200, .divider = 2, .ratio = 34, .waveform = 0x8888 },
+	{ .refclk = 38400, .cdclk = 204000, .divider = 2, .ratio = 34, .waveform = 0x9248 },
+	{ .refclk = 38400, .cdclk = 244800, .divider = 2, .ratio = 34, .waveform = 0xa4a4 },
+	{ .refclk = 38400, .cdclk = 285600, .divider = 2, .ratio = 34, .waveform = 0xa54a },
+	{ .refclk = 38400, .cdclk = 326400, .divider = 2, .ratio = 34, .waveform = 0xaaaa },
+	{ .refclk = 38400, .cdclk = 367200, .divider = 2, .ratio = 34, .waveform = 0xad5a },
+	{ .refclk = 38400, .cdclk = 408000, .divider = 2, .ratio = 34, .waveform = 0xb6b6 },
+	{ .refclk = 38400, .cdclk = 448800, .divider = 2, .ratio = 34, .waveform = 0xdbb6 },
+	{ .refclk = 38400, .cdclk = 489600, .divider = 2, .ratio = 34, .waveform = 0xeeee },
+	{ .refclk = 38400, .cdclk = 530400, .divider = 2, .ratio = 34, .waveform = 0xf7de },
+	{ .refclk = 38400, .cdclk = 571200, .divider = 2, .ratio = 34, .waveform = 0xfefe },
+	{ .refclk = 38400, .cdclk = 612000, .divider = 2, .ratio = 34, .waveform = 0xfffe },
+	{ .refclk = 38400, .cdclk = 652800, .divider = 2, .ratio = 34, .waveform = 0xffff },
+	{}
+};
+
+static int bxt_calc_cdclk(struct drm_i915_private *dev_priv, int min_cdclk)
+{
+	const struct intel_cdclk_vals *table = dev_priv->display.cdclk.table;
+	int i;
+
+	for (i = 0; table[i].refclk; i++)
+		if (table[i].refclk == dev_priv->display.cdclk.hw.ref &&
+		    table[i].cdclk >= min_cdclk)
+			return table[i].cdclk;
+
+	drm_WARN(&dev_priv->drm, 1,
+		 "Cannot satisfy minimum cdclk %d with refclk %u\n",
+		 min_cdclk, dev_priv->display.cdclk.hw.ref);
+	return 0;
+}
+
+static int bxt_calc_cdclk_pll_vco(struct drm_i915_private *dev_priv, int cdclk)
+{
+	const struct intel_cdclk_vals *table = dev_priv->display.cdclk.table;
+	int i;
+
+	if (cdclk == dev_priv->display.cdclk.hw.bypass)
+		return 0;
+
+	for (i = 0; table[i].refclk; i++)
+		if (table[i].refclk == dev_priv->display.cdclk.hw.ref &&
+		    table[i].cdclk == cdclk)
+			return dev_priv->display.cdclk.hw.ref * table[i].ratio;
+
+	drm_WARN(&dev_priv->drm, 1, "cdclk %d not valid for refclk %u\n",
+		 cdclk, dev_priv->display.cdclk.hw.ref);
+	return 0;
+}
+
+static u8 bxt_calc_voltage_level(int cdclk)
+{
+	return DIV_ROUND_UP(cdclk, 25000);
+}
+
+static u8 icl_calc_voltage_level(int cdclk)
+{
+	if (cdclk > 556800)
+		return 2;
+	else if (cdclk > 312000)
+		return 1;
+	else
+		return 0;
+}
+
+static u8 ehl_calc_voltage_level(int cdclk)
+{
+	if (cdclk > 326400)
+		return 3;
+	else if (cdclk > 312000)
+		return 2;
+	else if (cdclk > 180000)
+		return 1;
+	else
+		return 0;
+}
+
+static u8 tgl_calc_voltage_level(int cdclk)
+{
+	if (cdclk > 556800)
+		return 3;
+	else if (cdclk > 326400)
+		return 2;
+	else if (cdclk > 312000)
+		return 1;
+	else
+		return 0;
+}
+
+static void icl_readout_refclk(struct drm_i915_private *dev_priv,
+			       struct intel_cdclk_config *cdclk_config)
+{
+	u32 dssm = intel_de_read(dev_priv, SKL_DSSM) & ICL_DSSM_CDCLK_PLL_REFCLK_MASK;
+
+	switch (dssm) {
+	default:
+		MISSING_CASE(dssm);
+		fallthrough;
+	case ICL_DSSM_CDCLK_PLL_REFCLK_24MHz:
+		cdclk_config->ref = 24000;
+		break;
+	case ICL_DSSM_CDCLK_PLL_REFCLK_19_2MHz:
+		cdclk_config->ref = 19200;
+		break;
+	case ICL_DSSM_CDCLK_PLL_REFCLK_38_4MHz:
+		cdclk_config->ref = 38400;
+		break;
+	}
+}
+
+static void bxt_de_pll_readout(struct drm_i915_private *dev_priv,
+			       struct intel_cdclk_config *cdclk_config)
+{
+	u32 val, ratio;
+
+	if (IS_DG2(dev_priv))
+		cdclk_config->ref = 38400;
+	else if (DISPLAY_VER(dev_priv) >= 11)
+		icl_readout_refclk(dev_priv, cdclk_config);
+	else
+		cdclk_config->ref = 19200;
+
+	val = intel_de_read(dev_priv, BXT_DE_PLL_ENABLE);
+	if ((val & BXT_DE_PLL_PLL_ENABLE) == 0 ||
+	    (val & BXT_DE_PLL_LOCK) == 0) {
+		/*
+		 * CDCLK PLL is disabled, the VCO/ratio doesn't matter, but
+		 * setting it to zero is a way to signal that.
+		 */
+		cdclk_config->vco = 0;
+		return;
+	}
+
+	/*
+	 * DISPLAY_VER >= 11 have the ratio directly in the PLL enable register,
+	 * gen9lp had it in a separate PLL control register.
+	 */
+	if (DISPLAY_VER(dev_priv) >= 11)
+		ratio = val & ICL_CDCLK_PLL_RATIO_MASK;
+	else
+		ratio = intel_de_read(dev_priv, BXT_DE_PLL_CTL) & BXT_DE_PLL_RATIO_MASK;
+
+	cdclk_config->vco = ratio * cdclk_config->ref;
+}
+
+static void bxt_get_cdclk(struct drm_i915_private *dev_priv,
+			  struct intel_cdclk_config *cdclk_config)
+{
+	u32 squash_ctl = 0;
+	u32 divider;
+	int div;
+
+	bxt_de_pll_readout(dev_priv, cdclk_config);
+
+	if (DISPLAY_VER(dev_priv) >= 12)
+		cdclk_config->bypass = cdclk_config->ref / 2;
+	else if (DISPLAY_VER(dev_priv) >= 11)
+		cdclk_config->bypass = 50000;
+	else
+		cdclk_config->bypass = cdclk_config->ref;
+
+	if (cdclk_config->vco == 0) {
+		cdclk_config->cdclk = cdclk_config->bypass;
+		goto out;
+	}
+
+	divider = intel_de_read(dev_priv, CDCLK_CTL) & BXT_CDCLK_CD2X_DIV_SEL_MASK;
+
+	switch (divider) {
+	case BXT_CDCLK_CD2X_DIV_SEL_1:
+		div = 2;
+		break;
+	case BXT_CDCLK_CD2X_DIV_SEL_1_5:
+		div = 3;
+		break;
+	case BXT_CDCLK_CD2X_DIV_SEL_2:
+		div = 4;
+		break;
+	case BXT_CDCLK_CD2X_DIV_SEL_4:
+		div = 8;
+		break;
+	default:
+		MISSING_CASE(divider);
+		return;
+	}
+
+	if (has_cdclk_squasher(dev_priv))
+		squash_ctl = intel_de_read(dev_priv, CDCLK_SQUASH_CTL);
+
+	if (squash_ctl & CDCLK_SQUASH_ENABLE) {
+		u16 waveform;
+		int size;
+
+		size = REG_FIELD_GET(CDCLK_SQUASH_WINDOW_SIZE_MASK, squash_ctl) + 1;
+		waveform = REG_FIELD_GET(CDCLK_SQUASH_WAVEFORM_MASK, squash_ctl) >> (16 - size);
+
+		cdclk_config->cdclk = DIV_ROUND_CLOSEST(hweight16(waveform) *
+							cdclk_config->vco, size * div);
+	} else {
+		cdclk_config->cdclk = DIV_ROUND_CLOSEST(cdclk_config->vco, div);
+	}
+
+ out:
+	/*
+	 * Can't read this out :( Let's assume it's
+	 * at least what the CDCLK frequency requires.
+	 */
+	cdclk_config->voltage_level =
+		intel_cdclk_calc_voltage_level(dev_priv, cdclk_config->cdclk);
+}
+
+static void bxt_de_pll_disable(struct drm_i915_private *dev_priv)
+{
+	intel_de_write(dev_priv, BXT_DE_PLL_ENABLE, 0);
+
+	/* Timeout 200us */
+	if (intel_de_wait_for_clear(dev_priv,
+				    BXT_DE_PLL_ENABLE, BXT_DE_PLL_LOCK, 1))
+		drm_err(&dev_priv->drm, "timeout waiting for DE PLL unlock\n");
+
+	dev_priv->display.cdclk.hw.vco = 0;
+}
+
+static void bxt_de_pll_enable(struct drm_i915_private *dev_priv, int vco)
+{
+	int ratio = DIV_ROUND_CLOSEST(vco, dev_priv->display.cdclk.hw.ref);
+
+	intel_de_rmw(dev_priv, BXT_DE_PLL_CTL,
+		     BXT_DE_PLL_RATIO_MASK, BXT_DE_PLL_RATIO(ratio));
+
+	intel_de_write(dev_priv, BXT_DE_PLL_ENABLE, BXT_DE_PLL_PLL_ENABLE);
+
+	/* Timeout 200us */
+	if (intel_de_wait_for_set(dev_priv,
+				  BXT_DE_PLL_ENABLE, BXT_DE_PLL_LOCK, 1))
+		drm_err(&dev_priv->drm, "timeout waiting for DE PLL lock\n");
+
+	dev_priv->display.cdclk.hw.vco = vco;
+}
+
+static void icl_cdclk_pll_disable(struct drm_i915_private *dev_priv)
+{
+	intel_de_rmw(dev_priv, BXT_DE_PLL_ENABLE,
+		     BXT_DE_PLL_PLL_ENABLE, 0);
+
+	/* Timeout 200us */
+	if (intel_de_wait_for_clear(dev_priv, BXT_DE_PLL_ENABLE, BXT_DE_PLL_LOCK, 1))
+		drm_err(&dev_priv->drm, "timeout waiting for CDCLK PLL unlock\n");
+
+	dev_priv->display.cdclk.hw.vco = 0;
+}
+
+static void icl_cdclk_pll_enable(struct drm_i915_private *dev_priv, int vco)
+{
+	int ratio = DIV_ROUND_CLOSEST(vco, dev_priv->display.cdclk.hw.ref);
+	u32 val;
+
+	val = ICL_CDCLK_PLL_RATIO(ratio);
+	intel_de_write(dev_priv, BXT_DE_PLL_ENABLE, val);
+
+	val |= BXT_DE_PLL_PLL_ENABLE;
+	intel_de_write(dev_priv, BXT_DE_PLL_ENABLE, val);
+
+	/* Timeout 200us */
+	if (intel_de_wait_for_set(dev_priv, BXT_DE_PLL_ENABLE, BXT_DE_PLL_LOCK, 1))
+		drm_err(&dev_priv->drm, "timeout waiting for CDCLK PLL lock\n");
+
+	dev_priv->display.cdclk.hw.vco = vco;
+}
+
+static void adlp_cdclk_pll_crawl(struct drm_i915_private *dev_priv, int vco)
+{
+	int ratio = DIV_ROUND_CLOSEST(vco, dev_priv->display.cdclk.hw.ref);
+	u32 val;
+
+	/* Write PLL ratio without disabling */
+	val = ICL_CDCLK_PLL_RATIO(ratio) | BXT_DE_PLL_PLL_ENABLE;
+	intel_de_write(dev_priv, BXT_DE_PLL_ENABLE, val);
+
+	/* Submit freq change request */
+	val |= BXT_DE_PLL_FREQ_REQ;
+	intel_de_write(dev_priv, BXT_DE_PLL_ENABLE, val);
+
+	/* Timeout 200us */
+	if (intel_de_wait_for_set(dev_priv, BXT_DE_PLL_ENABLE,
+				  BXT_DE_PLL_LOCK | BXT_DE_PLL_FREQ_REQ_ACK, 1))
+		drm_err(&dev_priv->drm, "timeout waiting for FREQ change request ack\n");
+
+	val &= ~BXT_DE_PLL_FREQ_REQ;
+	intel_de_write(dev_priv, BXT_DE_PLL_ENABLE, val);
+
+	dev_priv->display.cdclk.hw.vco = vco;
+}
+
+static u32 bxt_cdclk_cd2x_pipe(struct drm_i915_private *dev_priv, enum pipe pipe)
+{
+	if (DISPLAY_VER(dev_priv) >= 12) {
+		if (pipe == INVALID_PIPE)
+			return TGL_CDCLK_CD2X_PIPE_NONE;
+		else
+			return TGL_CDCLK_CD2X_PIPE(pipe);
+	} else if (DISPLAY_VER(dev_priv) >= 11) {
+		if (pipe == INVALID_PIPE)
+			return ICL_CDCLK_CD2X_PIPE_NONE;
+		else
+			return ICL_CDCLK_CD2X_PIPE(pipe);
+	} else {
+		if (pipe == INVALID_PIPE)
+			return BXT_CDCLK_CD2X_PIPE_NONE;
+		else
+			return BXT_CDCLK_CD2X_PIPE(pipe);
+	}
+}
+
+static u32 bxt_cdclk_cd2x_div_sel(struct drm_i915_private *dev_priv,
+				  int cdclk, int vco)
+{
+	/* cdclk = vco / 2 / div{1,1.5,2,4} */
+	switch (DIV_ROUND_CLOSEST(vco, cdclk)) {
+	default:
+		drm_WARN_ON(&dev_priv->drm,
+			    cdclk != dev_priv->display.cdclk.hw.bypass);
+		drm_WARN_ON(&dev_priv->drm, vco != 0);
+		fallthrough;
+	case 2:
+		return BXT_CDCLK_CD2X_DIV_SEL_1;
+	case 3:
+		return BXT_CDCLK_CD2X_DIV_SEL_1_5;
+	case 4:
+		return BXT_CDCLK_CD2X_DIV_SEL_2;
+	case 8:
+		return BXT_CDCLK_CD2X_DIV_SEL_4;
+	}
+}
+
+static u32 cdclk_squash_waveform(struct drm_i915_private *dev_priv,
+				 int cdclk)
+{
+	const struct intel_cdclk_vals *table = dev_priv->display.cdclk.table;
+	int i;
+
+	if (cdclk == dev_priv->display.cdclk.hw.bypass)
+		return 0;
+
+	for (i = 0; table[i].refclk; i++)
+		if (table[i].refclk == dev_priv->display.cdclk.hw.ref &&
+		    table[i].cdclk == cdclk)
+			return table[i].waveform;
+
+	drm_WARN(&dev_priv->drm, 1, "cdclk %d not valid for refclk %u\n",
+		 cdclk, dev_priv->display.cdclk.hw.ref);
+
+	return 0xffff;
+}
+
+static void bxt_set_cdclk(struct drm_i915_private *dev_priv,
+			  const struct intel_cdclk_config *cdclk_config,
+			  enum pipe pipe)
+{
+	int cdclk = cdclk_config->cdclk;
+	int vco = cdclk_config->vco;
+	u32 val;
+	u16 waveform;
+	int clock;
+	int ret;
+
+	/* Inform power controller of upcoming frequency change. */
+	if (DISPLAY_VER(dev_priv) >= 11)
+		ret = skl_pcode_request(&dev_priv->uncore, SKL_PCODE_CDCLK_CONTROL,
+					SKL_CDCLK_PREPARE_FOR_CHANGE,
+					SKL_CDCLK_READY_FOR_CHANGE,
+					SKL_CDCLK_READY_FOR_CHANGE, 3);
+	else
+		/*
+		 * BSpec requires us to wait up to 150usec, but that leads to
+		 * timeouts; the 2ms used here is based on experiment.
+		 */
+		ret = snb_pcode_write_timeout(&dev_priv->uncore,
+					      HSW_PCODE_DE_WRITE_FREQ_REQ,
+					      0x80000000, 150, 2);
+	if (ret) {
+		drm_err(&dev_priv->drm,
+			"Failed to inform PCU about cdclk change (err %d, freq %d)\n",
+			ret, cdclk);
+		return;
+	}
+
+	if (HAS_CDCLK_CRAWL(dev_priv) && dev_priv->display.cdclk.hw.vco > 0 && vco > 0) {
+		if (dev_priv->display.cdclk.hw.vco != vco)
+			adlp_cdclk_pll_crawl(dev_priv, vco);
+	} else if (DISPLAY_VER(dev_priv) >= 11) {
+		if (dev_priv->display.cdclk.hw.vco != 0 &&
+		    dev_priv->display.cdclk.hw.vco != vco)
+			icl_cdclk_pll_disable(dev_priv);
+
+		if (dev_priv->display.cdclk.hw.vco != vco)
+			icl_cdclk_pll_enable(dev_priv, vco);
+	} else {
+		if (dev_priv->display.cdclk.hw.vco != 0 &&
+		    dev_priv->display.cdclk.hw.vco != vco)
+			bxt_de_pll_disable(dev_priv);
+
+		if (dev_priv->display.cdclk.hw.vco != vco)
+			bxt_de_pll_enable(dev_priv, vco);
+	}
+
+	waveform = cdclk_squash_waveform(dev_priv, cdclk);
+
+	if (waveform)
+		clock = vco / 2;
+	else
+		clock = cdclk;
+
+	if (has_cdclk_squasher(dev_priv)) {
+		u32 squash_ctl = 0;
+
+		if (waveform)
+			squash_ctl = CDCLK_SQUASH_ENABLE |
+				CDCLK_SQUASH_WINDOW_SIZE(0xf) | waveform;
+
+		intel_de_write(dev_priv, CDCLK_SQUASH_CTL, squash_ctl);
+	}
+
+	val = bxt_cdclk_cd2x_div_sel(dev_priv, clock, vco) |
+		bxt_cdclk_cd2x_pipe(dev_priv, pipe) |
+		skl_cdclk_decimal(cdclk);
+
+	/*
+	 * Disable SSA Precharge when CD clock frequency < 500 MHz,
+	 * enable otherwise.
+	 */
+	if ((IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) &&
+	    cdclk >= 500000)
+		val |= BXT_CDCLK_SSA_PRECHARGE_ENABLE;
+	intel_de_write(dev_priv, CDCLK_CTL, val);
+
+	if (pipe != INVALID_PIPE)
+		intel_crtc_wait_for_next_vblank(intel_crtc_for_pipe(dev_priv, pipe));
+
+	if (DISPLAY_VER(dev_priv) >= 11) {
+		ret = snb_pcode_write(&dev_priv->uncore, SKL_PCODE_CDCLK_CONTROL,
+				      cdclk_config->voltage_level);
+	} else {
+		/*
+		 * The timeout isn't specified, the 2ms used here is based on
+		 * experiment.
+		 * FIXME: Waiting for the request completion could be delayed
+		 * until the next PCODE request based on BSpec.
+		 */
+		ret = snb_pcode_write_timeout(&dev_priv->uncore,
+					      HSW_PCODE_DE_WRITE_FREQ_REQ,
+					      cdclk_config->voltage_level,
+					      150, 2);
+	}
+
+	if (ret) {
+		drm_err(&dev_priv->drm,
+			"PCode CDCLK freq set failed, (err %d, freq %d)\n",
+			ret, cdclk);
+		return;
+	}
+
+	intel_update_cdclk(dev_priv);
+
+	if (DISPLAY_VER(dev_priv) >= 11)
+		/*
+		 * Can't read out the voltage level :(
+		 * Let's just assume everything is as expected.
+		 */
+		dev_priv->display.cdclk.hw.voltage_level = cdclk_config->voltage_level;
+}
+
+static void bxt_sanitize_cdclk(struct drm_i915_private *dev_priv)
+{
+	u32 cdctl, expected;
+	int cdclk, clock, vco;
+
+	intel_update_cdclk(dev_priv);
+	intel_cdclk_dump_config(dev_priv, &dev_priv->display.cdclk.hw, "Current CDCLK");
+
+	if (dev_priv->display.cdclk.hw.vco == 0 ||
+	    dev_priv->display.cdclk.hw.cdclk == dev_priv->display.cdclk.hw.bypass)
+		goto sanitize;
+
+	/* DPLL okay; verify the cdclock
+	 *
+	 * Some BIOS versions leave an incorrect decimal frequency value and
+	 * set reserved MBZ bits in CDCLK_CTL at least during exiting from S4,
+	 * so sanitize this register.
+	 */
+	cdctl = intel_de_read(dev_priv, CDCLK_CTL);
+	/*
+	 * Let's ignore the pipe field, since BIOS could have configured the
+	 * dividers both synching to an active pipe, or asynchronously
+	 * (PIPE_NONE).
+	 */
+	cdctl &= ~bxt_cdclk_cd2x_pipe(dev_priv, INVALID_PIPE);
+
+	/* Make sure this is a legal cdclk value for the platform */
+	cdclk = bxt_calc_cdclk(dev_priv, dev_priv->display.cdclk.hw.cdclk);
+	if (cdclk != dev_priv->display.cdclk.hw.cdclk)
+		goto sanitize;
+
+	/* Make sure the VCO is correct for the cdclk */
+	vco = bxt_calc_cdclk_pll_vco(dev_priv, cdclk);
+	if (vco != dev_priv->display.cdclk.hw.vco)
+		goto sanitize;
+
+	expected = skl_cdclk_decimal(cdclk);
+
+	/* Figure out what CD2X divider we should be using for this cdclk */
+	if (has_cdclk_squasher(dev_priv))
+		clock = dev_priv->display.cdclk.hw.vco / 2;
+	else
+		clock = dev_priv->display.cdclk.hw.cdclk;
+
+	expected |= bxt_cdclk_cd2x_div_sel(dev_priv, clock,
+					   dev_priv->display.cdclk.hw.vco);
+
+	/*
+	 * Disable SSA Precharge when CD clock frequency < 500 MHz,
+	 * enable otherwise.
+	 */
+	if ((IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) &&
+	    dev_priv->display.cdclk.hw.cdclk >= 500000)
+		expected |= BXT_CDCLK_SSA_PRECHARGE_ENABLE;
+
+	if (cdctl == expected)
+		/* All well; nothing to sanitize */
+		return;
+
+sanitize:
+	drm_dbg_kms(&dev_priv->drm, "Sanitizing cdclk programmed by pre-os\n");
+
+	/* force cdclk programming */
+	dev_priv->display.cdclk.hw.cdclk = 0;
+
+	/* force full PLL disable + enable */
+	dev_priv->display.cdclk.hw.vco = -1;
+}
+
+static void bxt_cdclk_init_hw(struct drm_i915_private *dev_priv)
+{
+	struct intel_cdclk_config cdclk_config;
+
+	bxt_sanitize_cdclk(dev_priv);
+
+	if (dev_priv->display.cdclk.hw.cdclk != 0 &&
+	    dev_priv->display.cdclk.hw.vco != 0)
+		return;
+
+	cdclk_config = dev_priv->display.cdclk.hw;
+
+	/*
+	 * FIXME:
+	 * - The initial CDCLK needs to be read from VBT.
+	 *   Need to make this change after VBT has changes for BXT.
+	 */
+	cdclk_config.cdclk = bxt_calc_cdclk(dev_priv, 0);
+	cdclk_config.vco = bxt_calc_cdclk_pll_vco(dev_priv, cdclk_config.cdclk);
+	cdclk_config.voltage_level =
+		intel_cdclk_calc_voltage_level(dev_priv, cdclk_config.cdclk);
+
+	bxt_set_cdclk(dev_priv, &cdclk_config, INVALID_PIPE);
+}
+
+static void bxt_cdclk_uninit_hw(struct drm_i915_private *dev_priv)
+{
+	struct intel_cdclk_config cdclk_config = dev_priv->display.cdclk.hw;
+
+	cdclk_config.cdclk = cdclk_config.bypass;
+	cdclk_config.vco = 0;
+	cdclk_config.voltage_level =
+		intel_cdclk_calc_voltage_level(dev_priv, cdclk_config.cdclk);
+
+	bxt_set_cdclk(dev_priv, &cdclk_config, INVALID_PIPE);
+}
+
+/**
+ * intel_cdclk_init_hw - Initialize CDCLK hardware
+ * @i915: i915 device
+ *
+ * Initialize CDCLK. This consists mainly of initializing dev_priv->display.cdclk.hw and
+ * sanitizing the state of the hardware if needed. This is generally done only
+ * during the display core initialization sequence, after which the DMC will
+ * take care of turning CDCLK off/on as needed.
+ */
+void intel_cdclk_init_hw(struct drm_i915_private *i915)
+{
+	if (DISPLAY_VER(i915) >= 10 || IS_BROXTON(i915))
+		bxt_cdclk_init_hw(i915);
+	else if (DISPLAY_VER(i915) == 9)
+		skl_cdclk_init_hw(i915);
+}
+
+/**
+ * intel_cdclk_uninit_hw - Uninitialize CDCLK hardware
+ * @i915: i915 device
+ *
+ * Uninitialize CDCLK. This is done only during the display core
+ * uninitialization sequence.
+ */
+void intel_cdclk_uninit_hw(struct drm_i915_private *i915)
+{
+	if (DISPLAY_VER(i915) >= 10 || IS_BROXTON(i915))
+		bxt_cdclk_uninit_hw(i915);
+	else if (DISPLAY_VER(i915) == 9)
+		skl_cdclk_uninit_hw(i915);
+}
+
+static bool intel_cdclk_can_crawl(struct drm_i915_private *dev_priv,
+				  const struct intel_cdclk_config *a,
+				  const struct intel_cdclk_config *b)
+{
+	int a_div, b_div;
+
+	if (!HAS_CDCLK_CRAWL(dev_priv))
+		return false;
+
+	/*
+	 * The vco and cd2x divider will change independently
+	 * from each, so we disallow cd2x change when crawling.
+	 */
+	a_div = DIV_ROUND_CLOSEST(a->vco, a->cdclk);
+	b_div = DIV_ROUND_CLOSEST(b->vco, b->cdclk);
+
+	return a->vco != 0 && b->vco != 0 &&
+		a->vco != b->vco &&
+		a_div == b_div &&
+		a->ref == b->ref;
+}
+
+static bool intel_cdclk_can_squash(struct drm_i915_private *dev_priv,
+				   const struct intel_cdclk_config *a,
+				   const struct intel_cdclk_config *b)
+{
+	/*
+	 * FIXME should store a bit more state in intel_cdclk_config
+	 * to differentiate squasher vs. cd2x divider properly. For
+	 * the moment all platforms with squasher use a fixed cd2x
+	 * divider.
+	 */
+	if (!has_cdclk_squasher(dev_priv))
+		return false;
+
+	return a->cdclk != b->cdclk &&
+		a->vco != 0 &&
+		a->vco == b->vco &&
+		a->ref == b->ref;
+}
+
+/**
+ * intel_cdclk_needs_modeset - Determine if changong between the CDCLK
+ *                             configurations requires a modeset on all pipes
+ * @a: first CDCLK configuration
+ * @b: second CDCLK configuration
+ *
+ * Returns:
+ * True if changing between the two CDCLK configurations
+ * requires all pipes to be off, false if not.
+ */
+bool intel_cdclk_needs_modeset(const struct intel_cdclk_config *a,
+			       const struct intel_cdclk_config *b)
+{
+	return a->cdclk != b->cdclk ||
+		a->vco != b->vco ||
+		a->ref != b->ref;
+}
+
+/**
+ * intel_cdclk_can_cd2x_update - Determine if changing between the two CDCLK
+ *                               configurations requires only a cd2x divider update
+ * @dev_priv: i915 device
+ * @a: first CDCLK configuration
+ * @b: second CDCLK configuration
+ *
+ * Returns:
+ * True if changing between the two CDCLK configurations
+ * can be done with just a cd2x divider update, false if not.
+ */
+static bool intel_cdclk_can_cd2x_update(struct drm_i915_private *dev_priv,
+					const struct intel_cdclk_config *a,
+					const struct intel_cdclk_config *b)
+{
+	/* Older hw doesn't have the capability */
+	if (DISPLAY_VER(dev_priv) < 10 && !IS_BROXTON(dev_priv))
+		return false;
+
+	/*
+	 * FIXME should store a bit more state in intel_cdclk_config
+	 * to differentiate squasher vs. cd2x divider properly. For
+	 * the moment all platforms with squasher use a fixed cd2x
+	 * divider.
+	 */
+	if (has_cdclk_squasher(dev_priv))
+		return false;
+
+	return a->cdclk != b->cdclk &&
+		a->vco != 0 &&
+		a->vco == b->vco &&
+		a->ref == b->ref;
+}
+
+/**
+ * intel_cdclk_changed - Determine if two CDCLK configurations are different
+ * @a: first CDCLK configuration
+ * @b: second CDCLK configuration
+ *
+ * Returns:
+ * True if the CDCLK configurations don't match, false if they do.
+ */
+static bool intel_cdclk_changed(const struct intel_cdclk_config *a,
+				const struct intel_cdclk_config *b)
+{
+	return intel_cdclk_needs_modeset(a, b) ||
+		a->voltage_level != b->voltage_level;
+}
+
+void intel_cdclk_dump_config(struct drm_i915_private *i915,
+			     const struct intel_cdclk_config *cdclk_config,
+			     const char *context)
+{
+	drm_dbg_kms(&i915->drm, "%s %d kHz, VCO %d kHz, ref %d kHz, bypass %d kHz, voltage level %d\n",
+		    context, cdclk_config->cdclk, cdclk_config->vco,
+		    cdclk_config->ref, cdclk_config->bypass,
+		    cdclk_config->voltage_level);
+}
+
+/**
+ * intel_set_cdclk - Push the CDCLK configuration to the hardware
+ * @dev_priv: i915 device
+ * @cdclk_config: new CDCLK configuration
+ * @pipe: pipe with which to synchronize the update
+ *
+ * Program the hardware based on the passed in CDCLK state,
+ * if necessary.
+ */
+static void intel_set_cdclk(struct drm_i915_private *dev_priv,
+			    const struct intel_cdclk_config *cdclk_config,
+			    enum pipe pipe)
+{
+	struct intel_encoder *encoder;
+
+	if (!intel_cdclk_changed(&dev_priv->display.cdclk.hw, cdclk_config))
+		return;
+
+	if (drm_WARN_ON_ONCE(&dev_priv->drm, !dev_priv->display.funcs.cdclk->set_cdclk))
+		return;
+
+	intel_cdclk_dump_config(dev_priv, cdclk_config, "Changing CDCLK to");
+
+	for_each_intel_encoder_with_psr(&dev_priv->drm, encoder) {
+		struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+
+		intel_psr_pause(intel_dp);
+	}
+
+	intel_audio_cdclk_change_pre(dev_priv);
+
+	/*
+	 * Lock aux/gmbus while we change cdclk in case those
+	 * functions use cdclk. Not all platforms/ports do,
+	 * but we'll lock them all for simplicity.
+	 */
+	mutex_lock(&dev_priv->display.gmbus.mutex);
+	for_each_intel_dp(&dev_priv->drm, encoder) {
+		struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+
+		mutex_lock_nest_lock(&intel_dp->aux.hw_mutex,
+				     &dev_priv->display.gmbus.mutex);
+	}
+
+	intel_cdclk_set_cdclk(dev_priv, cdclk_config, pipe);
+
+	for_each_intel_dp(&dev_priv->drm, encoder) {
+		struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+
+		mutex_unlock(&intel_dp->aux.hw_mutex);
+	}
+	mutex_unlock(&dev_priv->display.gmbus.mutex);
+
+	for_each_intel_encoder_with_psr(&dev_priv->drm, encoder) {
+		struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+
+		intel_psr_resume(intel_dp);
+	}
+
+	intel_audio_cdclk_change_post(dev_priv);
+
+	if (drm_WARN(&dev_priv->drm,
+		     intel_cdclk_changed(&dev_priv->display.cdclk.hw, cdclk_config),
+		     "cdclk state doesn't match!\n")) {
+		intel_cdclk_dump_config(dev_priv, &dev_priv->display.cdclk.hw, "[hw state]");
+		intel_cdclk_dump_config(dev_priv, cdclk_config, "[sw state]");
+	}
+}
+
+/**
+ * intel_set_cdclk_pre_plane_update - Push the CDCLK state to the hardware
+ * @state: intel atomic state
+ *
+ * Program the hardware before updating the HW plane state based on the
+ * new CDCLK state, if necessary.
+ */
+void
+intel_set_cdclk_pre_plane_update(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	const struct intel_cdclk_state *old_cdclk_state =
+		intel_atomic_get_old_cdclk_state(state);
+	const struct intel_cdclk_state *new_cdclk_state =
+		intel_atomic_get_new_cdclk_state(state);
+	enum pipe pipe = new_cdclk_state->pipe;
+
+	if (!intel_cdclk_changed(&old_cdclk_state->actual,
+				 &new_cdclk_state->actual))
+		return;
+
+	if (pipe == INVALID_PIPE ||
+	    old_cdclk_state->actual.cdclk <= new_cdclk_state->actual.cdclk) {
+		drm_WARN_ON(&dev_priv->drm, !new_cdclk_state->base.changed);
+
+		intel_set_cdclk(dev_priv, &new_cdclk_state->actual, pipe);
+	}
+}
+
+/**
+ * intel_set_cdclk_post_plane_update - Push the CDCLK state to the hardware
+ * @state: intel atomic state
+ *
+ * Program the hardware after updating the HW plane state based on the
+ * new CDCLK state, if necessary.
+ */
+void
+intel_set_cdclk_post_plane_update(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	const struct intel_cdclk_state *old_cdclk_state =
+		intel_atomic_get_old_cdclk_state(state);
+	const struct intel_cdclk_state *new_cdclk_state =
+		intel_atomic_get_new_cdclk_state(state);
+	enum pipe pipe = new_cdclk_state->pipe;
+
+	if (!intel_cdclk_changed(&old_cdclk_state->actual,
+				 &new_cdclk_state->actual))
+		return;
+
+	if (pipe != INVALID_PIPE &&
+	    old_cdclk_state->actual.cdclk > new_cdclk_state->actual.cdclk) {
+		drm_WARN_ON(&dev_priv->drm, !new_cdclk_state->base.changed);
+
+		intel_set_cdclk(dev_priv, &new_cdclk_state->actual, pipe);
+	}
+}
+
+static int intel_pixel_rate_to_cdclk(const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+	int pixel_rate = crtc_state->pixel_rate;
+
+	if (DISPLAY_VER(dev_priv) >= 10)
+		return DIV_ROUND_UP(pixel_rate, 2);
+	else if (DISPLAY_VER(dev_priv) == 9 ||
+		 IS_BROADWELL(dev_priv) || IS_HASWELL(dev_priv))
+		return pixel_rate;
+	else if (IS_CHERRYVIEW(dev_priv))
+		return DIV_ROUND_UP(pixel_rate * 100, 95);
+	else if (crtc_state->double_wide)
+		return DIV_ROUND_UP(pixel_rate * 100, 90 * 2);
+	else
+		return DIV_ROUND_UP(pixel_rate * 100, 90);
+}
+
+static int intel_planes_min_cdclk(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	struct intel_plane *plane;
+	int min_cdclk = 0;
+
+	for_each_intel_plane_on_crtc(&dev_priv->drm, crtc, plane)
+		min_cdclk = max(crtc_state->min_cdclk[plane->id], min_cdclk);
+
+	return min_cdclk;
+}
+
+int intel_crtc_compute_min_cdclk(const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv =
+		to_i915(crtc_state->uapi.crtc->dev);
+	int min_cdclk;
+
+	if (!crtc_state->hw.enable)
+		return 0;
+
+	min_cdclk = intel_pixel_rate_to_cdclk(crtc_state);
+
+	/* pixel rate mustn't exceed 95% of cdclk with IPS on BDW */
+	if (IS_BROADWELL(dev_priv) && hsw_crtc_state_ips_capable(crtc_state))
+		min_cdclk = DIV_ROUND_UP(min_cdclk * 100, 95);
+
+	/* BSpec says "Do not use DisplayPort with CDCLK less than 432 MHz,
+	 * audio enabled, port width x4, and link rate HBR2 (5.4 GHz), or else
+	 * there may be audio corruption or screen corruption." This cdclk
+	 * restriction for GLK is 316.8 MHz.
+	 */
+	if (intel_crtc_has_dp_encoder(crtc_state) &&
+	    crtc_state->has_audio &&
+	    crtc_state->port_clock >= 540000 &&
+	    crtc_state->lane_count == 4) {
+		if (DISPLAY_VER(dev_priv) == 10) {
+			/* Display WA #1145: glk */
+			min_cdclk = max(316800, min_cdclk);
+		} else if (DISPLAY_VER(dev_priv) == 9 || IS_BROADWELL(dev_priv)) {
+			/* Display WA #1144: skl,bxt */
+			min_cdclk = max(432000, min_cdclk);
+		}
+	}
+
+	/*
+	 * According to BSpec, "The CD clock frequency must be at least twice
+	 * the frequency of the Azalia BCLK." and BCLK is 96 MHz by default.
+	 */
+	if (crtc_state->has_audio && DISPLAY_VER(dev_priv) >= 9)
+		min_cdclk = max(2 * 96000, min_cdclk);
+
+	/*
+	 * "For DP audio configuration, cdclk frequency shall be set to
+	 *  meet the following requirements:
+	 *  DP Link Frequency(MHz) | Cdclk frequency(MHz)
+	 *  270                    | 320 or higher
+	 *  162                    | 200 or higher"
+	 */
+	if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
+	    intel_crtc_has_dp_encoder(crtc_state) && crtc_state->has_audio)
+		min_cdclk = max(crtc_state->port_clock, min_cdclk);
+
+	/*
+	 * On Valleyview some DSI panels lose (v|h)sync when the clock is lower
+	 * than 320000KHz.
+	 */
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI) &&
+	    IS_VALLEYVIEW(dev_priv))
+		min_cdclk = max(320000, min_cdclk);
+
+	/*
+	 * On Geminilake once the CDCLK gets as low as 79200
+	 * picture gets unstable, despite that values are
+	 * correct for DSI PLL and DE PLL.
+	 */
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI) &&
+	    IS_GEMINILAKE(dev_priv))
+		min_cdclk = max(158400, min_cdclk);
+
+	/* Account for additional needs from the planes */
+	min_cdclk = max(intel_planes_min_cdclk(crtc_state), min_cdclk);
+
+	/*
+	 * When we decide to use only one VDSC engine, since
+	 * each VDSC operates with 1 ppc throughput, pixel clock
+	 * cannot be higher than the VDSC clock (cdclk)
+	 */
+	if (crtc_state->dsc.compression_enable && !crtc_state->dsc.dsc_split)
+		min_cdclk = max(min_cdclk, (int)crtc_state->pixel_rate);
+
+	/*
+	 * HACK. Currently for TGL/DG2 platforms we calculate
+	 * min_cdclk initially based on pixel_rate divided
+	 * by 2, accounting for also plane requirements,
+	 * however in some cases the lowest possible CDCLK
+	 * doesn't work and causing the underruns.
+	 * Explicitly stating here that this seems to be currently
+	 * rather a Hack, than final solution.
+	 */
+	if (IS_TIGERLAKE(dev_priv) || IS_DG2(dev_priv)) {
+		/*
+		 * Clamp to max_cdclk_freq in case pixel rate is higher,
+		 * in order not to break an 8K, but still leave W/A at place.
+		 */
+		min_cdclk = max_t(int, min_cdclk,
+				  min_t(int, crtc_state->pixel_rate,
+					dev_priv->display.cdclk.max_cdclk_freq));
+	}
+
+	return min_cdclk;
+}
+
+static int intel_compute_min_cdclk(struct intel_cdclk_state *cdclk_state)
+{
+	struct intel_atomic_state *state = cdclk_state->base.state;
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	const struct intel_bw_state *bw_state;
+	struct intel_crtc *crtc;
+	struct intel_crtc_state *crtc_state;
+	int min_cdclk, i;
+	enum pipe pipe;
+
+	for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) {
+		int ret;
+
+		min_cdclk = intel_crtc_compute_min_cdclk(crtc_state);
+		if (min_cdclk < 0)
+			return min_cdclk;
+
+		if (cdclk_state->min_cdclk[crtc->pipe] == min_cdclk)
+			continue;
+
+		cdclk_state->min_cdclk[crtc->pipe] = min_cdclk;
+
+		ret = intel_atomic_lock_global_state(&cdclk_state->base);
+		if (ret)
+			return ret;
+	}
+
+	bw_state = intel_atomic_get_new_bw_state(state);
+	if (bw_state) {
+		min_cdclk = intel_bw_min_cdclk(dev_priv, bw_state);
+
+		if (cdclk_state->bw_min_cdclk != min_cdclk) {
+			int ret;
+
+			cdclk_state->bw_min_cdclk = min_cdclk;
+
+			ret = intel_atomic_lock_global_state(&cdclk_state->base);
+			if (ret)
+				return ret;
+		}
+	}
+
+	min_cdclk = max(cdclk_state->force_min_cdclk,
+			cdclk_state->bw_min_cdclk);
+	for_each_pipe(dev_priv, pipe)
+		min_cdclk = max(cdclk_state->min_cdclk[pipe], min_cdclk);
+
+	/*
+	 * Avoid glk_force_audio_cdclk() causing excessive screen
+	 * blinking when multiple pipes are active by making sure
+	 * CDCLK frequency is always high enough for audio. With a
+	 * single active pipe we can always change CDCLK frequency
+	 * by changing the cd2x divider (see glk_cdclk_table[]) and
+	 * thus a full modeset won't be needed then.
+	 */
+	if (IS_GEMINILAKE(dev_priv) && cdclk_state->active_pipes &&
+	    !is_power_of_2(cdclk_state->active_pipes))
+		min_cdclk = max(2 * 96000, min_cdclk);
+
+	if (min_cdclk > dev_priv->display.cdclk.max_cdclk_freq) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "required cdclk (%d kHz) exceeds max (%d kHz)\n",
+			    min_cdclk, dev_priv->display.cdclk.max_cdclk_freq);
+		return -EINVAL;
+	}
+
+	return min_cdclk;
+}
+
+/*
+ * Account for port clock min voltage level requirements.
+ * This only really does something on DISPLA_VER >= 11 but can be
+ * called on earlier platforms as well.
+ *
+ * Note that this functions assumes that 0 is
+ * the lowest voltage value, and higher values
+ * correspond to increasingly higher voltages.
+ *
+ * Should that relationship no longer hold on
+ * future platforms this code will need to be
+ * adjusted.
+ */
+static int bxt_compute_min_voltage_level(struct intel_cdclk_state *cdclk_state)
+{
+	struct intel_atomic_state *state = cdclk_state->base.state;
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct intel_crtc *crtc;
+	struct intel_crtc_state *crtc_state;
+	u8 min_voltage_level;
+	int i;
+	enum pipe pipe;
+
+	for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) {
+		int ret;
+
+		if (crtc_state->hw.enable)
+			min_voltage_level = crtc_state->min_voltage_level;
+		else
+			min_voltage_level = 0;
+
+		if (cdclk_state->min_voltage_level[crtc->pipe] == min_voltage_level)
+			continue;
+
+		cdclk_state->min_voltage_level[crtc->pipe] = min_voltage_level;
+
+		ret = intel_atomic_lock_global_state(&cdclk_state->base);
+		if (ret)
+			return ret;
+	}
+
+	min_voltage_level = 0;
+	for_each_pipe(dev_priv, pipe)
+		min_voltage_level = max(cdclk_state->min_voltage_level[pipe],
+					min_voltage_level);
+
+	return min_voltage_level;
+}
+
+static int vlv_modeset_calc_cdclk(struct intel_cdclk_state *cdclk_state)
+{
+	struct intel_atomic_state *state = cdclk_state->base.state;
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	int min_cdclk, cdclk;
+
+	min_cdclk = intel_compute_min_cdclk(cdclk_state);
+	if (min_cdclk < 0)
+		return min_cdclk;
+
+	cdclk = vlv_calc_cdclk(dev_priv, min_cdclk);
+
+	cdclk_state->logical.cdclk = cdclk;
+	cdclk_state->logical.voltage_level =
+		vlv_calc_voltage_level(dev_priv, cdclk);
+
+	if (!cdclk_state->active_pipes) {
+		cdclk = vlv_calc_cdclk(dev_priv, cdclk_state->force_min_cdclk);
+
+		cdclk_state->actual.cdclk = cdclk;
+		cdclk_state->actual.voltage_level =
+			vlv_calc_voltage_level(dev_priv, cdclk);
+	} else {
+		cdclk_state->actual = cdclk_state->logical;
+	}
+
+	return 0;
+}
+
+static int bdw_modeset_calc_cdclk(struct intel_cdclk_state *cdclk_state)
+{
+	int min_cdclk, cdclk;
+
+	min_cdclk = intel_compute_min_cdclk(cdclk_state);
+	if (min_cdclk < 0)
+		return min_cdclk;
+
+	/*
+	 * FIXME should also account for plane ratio
+	 * once 64bpp pixel formats are supported.
+	 */
+	cdclk = bdw_calc_cdclk(min_cdclk);
+
+	cdclk_state->logical.cdclk = cdclk;
+	cdclk_state->logical.voltage_level =
+		bdw_calc_voltage_level(cdclk);
+
+	if (!cdclk_state->active_pipes) {
+		cdclk = bdw_calc_cdclk(cdclk_state->force_min_cdclk);
+
+		cdclk_state->actual.cdclk = cdclk;
+		cdclk_state->actual.voltage_level =
+			bdw_calc_voltage_level(cdclk);
+	} else {
+		cdclk_state->actual = cdclk_state->logical;
+	}
+
+	return 0;
+}
+
+static int skl_dpll0_vco(struct intel_cdclk_state *cdclk_state)
+{
+	struct intel_atomic_state *state = cdclk_state->base.state;
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct intel_crtc *crtc;
+	struct intel_crtc_state *crtc_state;
+	int vco, i;
+
+	vco = cdclk_state->logical.vco;
+	if (!vco)
+		vco = dev_priv->skl_preferred_vco_freq;
+
+	for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) {
+		if (!crtc_state->hw.enable)
+			continue;
+
+		if (!intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP))
+			continue;
+
+		/*
+		 * DPLL0 VCO may need to be adjusted to get the correct
+		 * clock for eDP. This will affect cdclk as well.
+		 */
+		switch (crtc_state->port_clock / 2) {
+		case 108000:
+		case 216000:
+			vco = 8640000;
+			break;
+		default:
+			vco = 8100000;
+			break;
+		}
+	}
+
+	return vco;
+}
+
+static int skl_modeset_calc_cdclk(struct intel_cdclk_state *cdclk_state)
+{
+	int min_cdclk, cdclk, vco;
+
+	min_cdclk = intel_compute_min_cdclk(cdclk_state);
+	if (min_cdclk < 0)
+		return min_cdclk;
+
+	vco = skl_dpll0_vco(cdclk_state);
+
+	/*
+	 * FIXME should also account for plane ratio
+	 * once 64bpp pixel formats are supported.
+	 */
+	cdclk = skl_calc_cdclk(min_cdclk, vco);
+
+	cdclk_state->logical.vco = vco;
+	cdclk_state->logical.cdclk = cdclk;
+	cdclk_state->logical.voltage_level =
+		skl_calc_voltage_level(cdclk);
+
+	if (!cdclk_state->active_pipes) {
+		cdclk = skl_calc_cdclk(cdclk_state->force_min_cdclk, vco);
+
+		cdclk_state->actual.vco = vco;
+		cdclk_state->actual.cdclk = cdclk;
+		cdclk_state->actual.voltage_level =
+			skl_calc_voltage_level(cdclk);
+	} else {
+		cdclk_state->actual = cdclk_state->logical;
+	}
+
+	return 0;
+}
+
+static int bxt_modeset_calc_cdclk(struct intel_cdclk_state *cdclk_state)
+{
+	struct intel_atomic_state *state = cdclk_state->base.state;
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	int min_cdclk, min_voltage_level, cdclk, vco;
+
+	min_cdclk = intel_compute_min_cdclk(cdclk_state);
+	if (min_cdclk < 0)
+		return min_cdclk;
+
+	min_voltage_level = bxt_compute_min_voltage_level(cdclk_state);
+	if (min_voltage_level < 0)
+		return min_voltage_level;
+
+	cdclk = bxt_calc_cdclk(dev_priv, min_cdclk);
+	vco = bxt_calc_cdclk_pll_vco(dev_priv, cdclk);
+
+	cdclk_state->logical.vco = vco;
+	cdclk_state->logical.cdclk = cdclk;
+	cdclk_state->logical.voltage_level =
+		max_t(int, min_voltage_level,
+		      intel_cdclk_calc_voltage_level(dev_priv, cdclk));
+
+	if (!cdclk_state->active_pipes) {
+		cdclk = bxt_calc_cdclk(dev_priv, cdclk_state->force_min_cdclk);
+		vco = bxt_calc_cdclk_pll_vco(dev_priv, cdclk);
+
+		cdclk_state->actual.vco = vco;
+		cdclk_state->actual.cdclk = cdclk;
+		cdclk_state->actual.voltage_level =
+			intel_cdclk_calc_voltage_level(dev_priv, cdclk);
+	} else {
+		cdclk_state->actual = cdclk_state->logical;
+	}
+
+	return 0;
+}
+
+static int fixed_modeset_calc_cdclk(struct intel_cdclk_state *cdclk_state)
+{
+	int min_cdclk;
+
+	/*
+	 * We can't change the cdclk frequency, but we still want to
+	 * check that the required minimum frequency doesn't exceed
+	 * the actual cdclk frequency.
+	 */
+	min_cdclk = intel_compute_min_cdclk(cdclk_state);
+	if (min_cdclk < 0)
+		return min_cdclk;
+
+	return 0;
+}
+
+static struct intel_global_state *intel_cdclk_duplicate_state(struct intel_global_obj *obj)
+{
+	struct intel_cdclk_state *cdclk_state;
+
+	cdclk_state = kmemdup(obj->state, sizeof(*cdclk_state), GFP_KERNEL);
+	if (!cdclk_state)
+		return NULL;
+
+	cdclk_state->pipe = INVALID_PIPE;
+
+	return &cdclk_state->base;
+}
+
+static void intel_cdclk_destroy_state(struct intel_global_obj *obj,
+				      struct intel_global_state *state)
+{
+	kfree(state);
+}
+
+static const struct intel_global_state_funcs intel_cdclk_funcs = {
+	.atomic_duplicate_state = intel_cdclk_duplicate_state,
+	.atomic_destroy_state = intel_cdclk_destroy_state,
+};
+
+struct intel_cdclk_state *
+intel_atomic_get_cdclk_state(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct intel_global_state *cdclk_state;
+
+	cdclk_state = intel_atomic_get_global_obj_state(state, &dev_priv->display.cdclk.obj);
+	if (IS_ERR(cdclk_state))
+		return ERR_CAST(cdclk_state);
+
+	return to_intel_cdclk_state(cdclk_state);
+}
+
+int intel_cdclk_atomic_check(struct intel_atomic_state *state,
+			     bool *need_cdclk_calc)
+{
+	const struct intel_cdclk_state *old_cdclk_state;
+	const struct intel_cdclk_state *new_cdclk_state;
+	struct intel_plane_state *plane_state;
+	struct intel_plane *plane;
+	int ret;
+	int i;
+
+	/*
+	 * active_planes bitmask has been updated, and potentially affected
+	 * planes are part of the state. We can now compute the minimum cdclk
+	 * for each plane.
+	 */
+	for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
+		ret = intel_plane_calc_min_cdclk(state, plane, need_cdclk_calc);
+		if (ret)
+			return ret;
+	}
+
+	ret = intel_bw_calc_min_cdclk(state, need_cdclk_calc);
+	if (ret)
+		return ret;
+
+	old_cdclk_state = intel_atomic_get_old_cdclk_state(state);
+	new_cdclk_state = intel_atomic_get_new_cdclk_state(state);
+
+	if (new_cdclk_state &&
+	    old_cdclk_state->force_min_cdclk != new_cdclk_state->force_min_cdclk)
+		*need_cdclk_calc = true;
+
+	return 0;
+}
+
+int intel_cdclk_init(struct drm_i915_private *dev_priv)
+{
+	struct intel_cdclk_state *cdclk_state;
+
+	cdclk_state = kzalloc(sizeof(*cdclk_state), GFP_KERNEL);
+	if (!cdclk_state)
+		return -ENOMEM;
+
+	intel_atomic_global_obj_init(dev_priv, &dev_priv->display.cdclk.obj,
+				     &cdclk_state->base, &intel_cdclk_funcs);
+
+	return 0;
+}
+
+int intel_modeset_calc_cdclk(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	const struct intel_cdclk_state *old_cdclk_state;
+	struct intel_cdclk_state *new_cdclk_state;
+	enum pipe pipe = INVALID_PIPE;
+	int ret;
+
+	new_cdclk_state = intel_atomic_get_cdclk_state(state);
+	if (IS_ERR(new_cdclk_state))
+		return PTR_ERR(new_cdclk_state);
+
+	old_cdclk_state = intel_atomic_get_old_cdclk_state(state);
+
+	new_cdclk_state->active_pipes =
+		intel_calc_active_pipes(state, old_cdclk_state->active_pipes);
+
+	ret = intel_cdclk_modeset_calc_cdclk(dev_priv, new_cdclk_state);
+	if (ret)
+		return ret;
+
+	if (intel_cdclk_changed(&old_cdclk_state->actual,
+				&new_cdclk_state->actual)) {
+		/*
+		 * Also serialize commits across all crtcs
+		 * if the actual hw needs to be poked.
+		 */
+		ret = intel_atomic_serialize_global_state(&new_cdclk_state->base);
+		if (ret)
+			return ret;
+	} else if (old_cdclk_state->active_pipes != new_cdclk_state->active_pipes ||
+		   old_cdclk_state->force_min_cdclk != new_cdclk_state->force_min_cdclk ||
+		   intel_cdclk_changed(&old_cdclk_state->logical,
+				       &new_cdclk_state->logical)) {
+		ret = intel_atomic_lock_global_state(&new_cdclk_state->base);
+		if (ret)
+			return ret;
+	} else {
+		return 0;
+	}
+
+	if (is_power_of_2(new_cdclk_state->active_pipes) &&
+	    intel_cdclk_can_cd2x_update(dev_priv,
+					&old_cdclk_state->actual,
+					&new_cdclk_state->actual)) {
+		struct intel_crtc *crtc;
+		struct intel_crtc_state *crtc_state;
+
+		pipe = ilog2(new_cdclk_state->active_pipes);
+		crtc = intel_crtc_for_pipe(dev_priv, pipe);
+
+		crtc_state = intel_atomic_get_crtc_state(&state->base, crtc);
+		if (IS_ERR(crtc_state))
+			return PTR_ERR(crtc_state);
+
+		if (drm_atomic_crtc_needs_modeset(&crtc_state->uapi))
+			pipe = INVALID_PIPE;
+	}
+
+	if (intel_cdclk_can_squash(dev_priv,
+				   &old_cdclk_state->actual,
+				   &new_cdclk_state->actual)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Can change cdclk via squasher\n");
+	} else if (intel_cdclk_can_crawl(dev_priv,
+					 &old_cdclk_state->actual,
+					 &new_cdclk_state->actual)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Can change cdclk via crawl\n");
+	} else if (pipe != INVALID_PIPE) {
+		new_cdclk_state->pipe = pipe;
+
+		drm_dbg_kms(&dev_priv->drm,
+			    "Can change cdclk cd2x divider with pipe %c active\n",
+			    pipe_name(pipe));
+	} else if (intel_cdclk_needs_modeset(&old_cdclk_state->actual,
+					     &new_cdclk_state->actual)) {
+		/* All pipes must be switched off while we change the cdclk. */
+		ret = intel_modeset_all_pipes(state);
+		if (ret)
+			return ret;
+
+		drm_dbg_kms(&dev_priv->drm,
+			    "Modeset required for cdclk change\n");
+	}
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "New cdclk calculated to be logical %u kHz, actual %u kHz\n",
+		    new_cdclk_state->logical.cdclk,
+		    new_cdclk_state->actual.cdclk);
+	drm_dbg_kms(&dev_priv->drm,
+		    "New voltage level calculated to be logical %u, actual %u\n",
+		    new_cdclk_state->logical.voltage_level,
+		    new_cdclk_state->actual.voltage_level);
+
+	return 0;
+}
+
+static int intel_compute_max_dotclk(struct drm_i915_private *dev_priv)
+{
+	int max_cdclk_freq = dev_priv->display.cdclk.max_cdclk_freq;
+
+	if (DISPLAY_VER(dev_priv) >= 10)
+		return 2 * max_cdclk_freq;
+	else if (DISPLAY_VER(dev_priv) == 9 ||
+		 IS_BROADWELL(dev_priv) || IS_HASWELL(dev_priv))
+		return max_cdclk_freq;
+	else if (IS_CHERRYVIEW(dev_priv))
+		return max_cdclk_freq*95/100;
+	else if (DISPLAY_VER(dev_priv) < 4)
+		return 2*max_cdclk_freq*90/100;
+	else
+		return max_cdclk_freq*90/100;
+}
+
+/**
+ * intel_update_max_cdclk - Determine the maximum support CDCLK frequency
+ * @dev_priv: i915 device
+ *
+ * Determine the maximum CDCLK frequency the platform supports, and also
+ * derive the maximum dot clock frequency the maximum CDCLK frequency
+ * allows.
+ */
+void intel_update_max_cdclk(struct drm_i915_private *dev_priv)
+{
+	if (IS_JSL_EHL(dev_priv)) {
+		if (dev_priv->display.cdclk.hw.ref == 24000)
+			dev_priv->display.cdclk.max_cdclk_freq = 552000;
+		else
+			dev_priv->display.cdclk.max_cdclk_freq = 556800;
+	} else if (DISPLAY_VER(dev_priv) >= 11) {
+		if (dev_priv->display.cdclk.hw.ref == 24000)
+			dev_priv->display.cdclk.max_cdclk_freq = 648000;
+		else
+			dev_priv->display.cdclk.max_cdclk_freq = 652800;
+	} else if (IS_GEMINILAKE(dev_priv)) {
+		dev_priv->display.cdclk.max_cdclk_freq = 316800;
+	} else if (IS_BROXTON(dev_priv)) {
+		dev_priv->display.cdclk.max_cdclk_freq = 624000;
+	} else if (DISPLAY_VER(dev_priv) == 9) {
+		u32 limit = intel_de_read(dev_priv, SKL_DFSM) & SKL_DFSM_CDCLK_LIMIT_MASK;
+		int max_cdclk, vco;
+
+		vco = dev_priv->skl_preferred_vco_freq;
+		drm_WARN_ON(&dev_priv->drm, vco != 8100000 && vco != 8640000);
+
+		/*
+		 * Use the lower (vco 8640) cdclk values as a
+		 * first guess. skl_calc_cdclk() will correct it
+		 * if the preferred vco is 8100 instead.
+		 */
+		if (limit == SKL_DFSM_CDCLK_LIMIT_675)
+			max_cdclk = 617143;
+		else if (limit == SKL_DFSM_CDCLK_LIMIT_540)
+			max_cdclk = 540000;
+		else if (limit == SKL_DFSM_CDCLK_LIMIT_450)
+			max_cdclk = 432000;
+		else
+			max_cdclk = 308571;
+
+		dev_priv->display.cdclk.max_cdclk_freq = skl_calc_cdclk(max_cdclk, vco);
+	} else if (IS_BROADWELL(dev_priv))  {
+		/*
+		 * FIXME with extra cooling we can allow
+		 * 540 MHz for ULX and 675 Mhz for ULT.
+		 * How can we know if extra cooling is
+		 * available? PCI ID, VTB, something else?
+		 */
+		if (intel_de_read(dev_priv, FUSE_STRAP) & HSW_CDCLK_LIMIT)
+			dev_priv->display.cdclk.max_cdclk_freq = 450000;
+		else if (IS_BDW_ULX(dev_priv))
+			dev_priv->display.cdclk.max_cdclk_freq = 450000;
+		else if (IS_BDW_ULT(dev_priv))
+			dev_priv->display.cdclk.max_cdclk_freq = 540000;
+		else
+			dev_priv->display.cdclk.max_cdclk_freq = 675000;
+	} else if (IS_CHERRYVIEW(dev_priv)) {
+		dev_priv->display.cdclk.max_cdclk_freq = 320000;
+	} else if (IS_VALLEYVIEW(dev_priv)) {
+		dev_priv->display.cdclk.max_cdclk_freq = 400000;
+	} else {
+		/* otherwise assume cdclk is fixed */
+		dev_priv->display.cdclk.max_cdclk_freq = dev_priv->display.cdclk.hw.cdclk;
+	}
+
+	dev_priv->max_dotclk_freq = intel_compute_max_dotclk(dev_priv);
+
+	drm_dbg(&dev_priv->drm, "Max CD clock rate: %d kHz\n",
+		dev_priv->display.cdclk.max_cdclk_freq);
+
+	drm_dbg(&dev_priv->drm, "Max dotclock rate: %d kHz\n",
+		dev_priv->max_dotclk_freq);
+}
+
+/**
+ * intel_update_cdclk - Determine the current CDCLK frequency
+ * @dev_priv: i915 device
+ *
+ * Determine the current CDCLK frequency.
+ */
+void intel_update_cdclk(struct drm_i915_private *dev_priv)
+{
+	intel_cdclk_get_cdclk(dev_priv, &dev_priv->display.cdclk.hw);
+
+	/*
+	 * 9:0 CMBUS [sic] CDCLK frequency (cdfreq):
+	 * Programmng [sic] note: bit[9:2] should be programmed to the number
+	 * of cdclk that generates 4MHz reference clock freq which is used to
+	 * generate GMBus clock. This will vary with the cdclk freq.
+	 */
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
+		intel_de_write(dev_priv, GMBUSFREQ_VLV,
+			       DIV_ROUND_UP(dev_priv->display.cdclk.hw.cdclk, 1000));
+}
+
+static int dg1_rawclk(struct drm_i915_private *dev_priv)
+{
+	/*
+	 * DG1 always uses a 38.4 MHz rawclk.  The bspec tells us
+	 * "Program Numerator=2, Denominator=4, Divider=37 decimal."
+	 */
+	intel_de_write(dev_priv, PCH_RAWCLK_FREQ,
+		       CNP_RAWCLK_DEN(4) | CNP_RAWCLK_DIV(37) | ICP_RAWCLK_NUM(2));
+
+	return 38400;
+}
+
+static int cnp_rawclk(struct drm_i915_private *dev_priv)
+{
+	u32 rawclk;
+	int divider, fraction;
+
+	if (intel_de_read(dev_priv, SFUSE_STRAP) & SFUSE_STRAP_RAW_FREQUENCY) {
+		/* 24 MHz */
+		divider = 24000;
+		fraction = 0;
+	} else {
+		/* 19.2 MHz */
+		divider = 19000;
+		fraction = 200;
+	}
+
+	rawclk = CNP_RAWCLK_DIV(divider / 1000);
+	if (fraction) {
+		int numerator = 1;
+
+		rawclk |= CNP_RAWCLK_DEN(DIV_ROUND_CLOSEST(numerator * 1000,
+							   fraction) - 1);
+		if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP)
+			rawclk |= ICP_RAWCLK_NUM(numerator);
+	}
+
+	intel_de_write(dev_priv, PCH_RAWCLK_FREQ, rawclk);
+	return divider + fraction;
+}
+
+static int pch_rawclk(struct drm_i915_private *dev_priv)
+{
+	return (intel_de_read(dev_priv, PCH_RAWCLK_FREQ) & RAWCLK_FREQ_MASK) * 1000;
+}
+
+static int vlv_hrawclk(struct drm_i915_private *dev_priv)
+{
+	/* RAWCLK_FREQ_VLV register updated from power well code */
+	return vlv_get_cck_clock_hpll(dev_priv, "hrawclk",
+				      CCK_DISPLAY_REF_CLOCK_CONTROL);
+}
+
+static int i9xx_hrawclk(struct drm_i915_private *dev_priv)
+{
+	u32 clkcfg;
+
+	/*
+	 * hrawclock is 1/4 the FSB frequency
+	 *
+	 * Note that this only reads the state of the FSB
+	 * straps, not the actual FSB frequency. Some BIOSen
+	 * let you configure each independently. Ideally we'd
+	 * read out the actual FSB frequency but sadly we
+	 * don't know which registers have that information,
+	 * and all the relevant docs have gone to bit heaven :(
+	 */
+	clkcfg = intel_de_read(dev_priv, CLKCFG) & CLKCFG_FSB_MASK;
+
+	if (IS_MOBILE(dev_priv)) {
+		switch (clkcfg) {
+		case CLKCFG_FSB_400:
+			return 100000;
+		case CLKCFG_FSB_533:
+			return 133333;
+		case CLKCFG_FSB_667:
+			return 166667;
+		case CLKCFG_FSB_800:
+			return 200000;
+		case CLKCFG_FSB_1067:
+			return 266667;
+		case CLKCFG_FSB_1333:
+			return 333333;
+		default:
+			MISSING_CASE(clkcfg);
+			return 133333;
+		}
+	} else {
+		switch (clkcfg) {
+		case CLKCFG_FSB_400_ALT:
+			return 100000;
+		case CLKCFG_FSB_533:
+			return 133333;
+		case CLKCFG_FSB_667:
+			return 166667;
+		case CLKCFG_FSB_800:
+			return 200000;
+		case CLKCFG_FSB_1067_ALT:
+			return 266667;
+		case CLKCFG_FSB_1333_ALT:
+			return 333333;
+		case CLKCFG_FSB_1600_ALT:
+			return 400000;
+		default:
+			return 133333;
+		}
+	}
+}
+
+/**
+ * intel_read_rawclk - Determine the current RAWCLK frequency
+ * @dev_priv: i915 device
+ *
+ * Determine the current RAWCLK frequency. RAWCLK is a fixed
+ * frequency clock so this needs to done only once.
+ */
+u32 intel_read_rawclk(struct drm_i915_private *dev_priv)
+{
+	u32 freq;
+
+	if (INTEL_PCH_TYPE(dev_priv) >= PCH_DG1)
+		freq = dg1_rawclk(dev_priv);
+	else if (INTEL_PCH_TYPE(dev_priv) >= PCH_MTP)
+		/*
+		 * MTL always uses a 38.4 MHz rawclk.  The bspec tells us
+		 * "RAWCLK_FREQ defaults to the values for 38.4 and does
+		 * not need to be programmed."
+		 */
+		freq = 38400;
+	else if (INTEL_PCH_TYPE(dev_priv) >= PCH_CNP)
+		freq = cnp_rawclk(dev_priv);
+	else if (HAS_PCH_SPLIT(dev_priv))
+		freq = pch_rawclk(dev_priv);
+	else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
+		freq = vlv_hrawclk(dev_priv);
+	else if (DISPLAY_VER(dev_priv) >= 3)
+		freq = i9xx_hrawclk(dev_priv);
+	else
+		/* no rawclk on other platforms, or no need to know it */
+		return 0;
+
+	return freq;
+}
+
+static const struct intel_cdclk_funcs tgl_cdclk_funcs = {
+	.get_cdclk = bxt_get_cdclk,
+	.set_cdclk = bxt_set_cdclk,
+	.modeset_calc_cdclk = bxt_modeset_calc_cdclk,
+	.calc_voltage_level = tgl_calc_voltage_level,
+};
+
+static const struct intel_cdclk_funcs ehl_cdclk_funcs = {
+	.get_cdclk = bxt_get_cdclk,
+	.set_cdclk = bxt_set_cdclk,
+	.modeset_calc_cdclk = bxt_modeset_calc_cdclk,
+	.calc_voltage_level = ehl_calc_voltage_level,
+};
+
+static const struct intel_cdclk_funcs icl_cdclk_funcs = {
+	.get_cdclk = bxt_get_cdclk,
+	.set_cdclk = bxt_set_cdclk,
+	.modeset_calc_cdclk = bxt_modeset_calc_cdclk,
+	.calc_voltage_level = icl_calc_voltage_level,
+};
+
+static const struct intel_cdclk_funcs bxt_cdclk_funcs = {
+	.get_cdclk = bxt_get_cdclk,
+	.set_cdclk = bxt_set_cdclk,
+	.modeset_calc_cdclk = bxt_modeset_calc_cdclk,
+	.calc_voltage_level = bxt_calc_voltage_level,
+};
+
+static const struct intel_cdclk_funcs skl_cdclk_funcs = {
+	.get_cdclk = skl_get_cdclk,
+	.set_cdclk = skl_set_cdclk,
+	.modeset_calc_cdclk = skl_modeset_calc_cdclk,
+};
+
+static const struct intel_cdclk_funcs bdw_cdclk_funcs = {
+	.get_cdclk = bdw_get_cdclk,
+	.set_cdclk = bdw_set_cdclk,
+	.modeset_calc_cdclk = bdw_modeset_calc_cdclk,
+};
+
+static const struct intel_cdclk_funcs chv_cdclk_funcs = {
+	.get_cdclk = vlv_get_cdclk,
+	.set_cdclk = chv_set_cdclk,
+	.modeset_calc_cdclk = vlv_modeset_calc_cdclk,
+};
+
+static const struct intel_cdclk_funcs vlv_cdclk_funcs = {
+	.get_cdclk = vlv_get_cdclk,
+	.set_cdclk = vlv_set_cdclk,
+	.modeset_calc_cdclk = vlv_modeset_calc_cdclk,
+};
+
+static const struct intel_cdclk_funcs hsw_cdclk_funcs = {
+	.get_cdclk = hsw_get_cdclk,
+	.modeset_calc_cdclk = fixed_modeset_calc_cdclk,
+};
+
+/* SNB, IVB, 965G, 945G */
+static const struct intel_cdclk_funcs fixed_400mhz_cdclk_funcs = {
+	.get_cdclk = fixed_400mhz_get_cdclk,
+	.modeset_calc_cdclk = fixed_modeset_calc_cdclk,
+};
+
+static const struct intel_cdclk_funcs ilk_cdclk_funcs = {
+	.get_cdclk = fixed_450mhz_get_cdclk,
+	.modeset_calc_cdclk = fixed_modeset_calc_cdclk,
+};
+
+static const struct intel_cdclk_funcs gm45_cdclk_funcs = {
+	.get_cdclk = gm45_get_cdclk,
+	.modeset_calc_cdclk = fixed_modeset_calc_cdclk,
+};
+
+/* G45 uses G33 */
+
+static const struct intel_cdclk_funcs i965gm_cdclk_funcs = {
+	.get_cdclk = i965gm_get_cdclk,
+	.modeset_calc_cdclk = fixed_modeset_calc_cdclk,
+};
+
+/* i965G uses fixed 400 */
+
+static const struct intel_cdclk_funcs pnv_cdclk_funcs = {
+	.get_cdclk = pnv_get_cdclk,
+	.modeset_calc_cdclk = fixed_modeset_calc_cdclk,
+};
+
+static const struct intel_cdclk_funcs g33_cdclk_funcs = {
+	.get_cdclk = g33_get_cdclk,
+	.modeset_calc_cdclk = fixed_modeset_calc_cdclk,
+};
+
+static const struct intel_cdclk_funcs i945gm_cdclk_funcs = {
+	.get_cdclk = i945gm_get_cdclk,
+	.modeset_calc_cdclk = fixed_modeset_calc_cdclk,
+};
+
+/* i945G uses fixed 400 */
+
+static const struct intel_cdclk_funcs i915gm_cdclk_funcs = {
+	.get_cdclk = i915gm_get_cdclk,
+	.modeset_calc_cdclk = fixed_modeset_calc_cdclk,
+};
+
+static const struct intel_cdclk_funcs i915g_cdclk_funcs = {
+	.get_cdclk = fixed_333mhz_get_cdclk,
+	.modeset_calc_cdclk = fixed_modeset_calc_cdclk,
+};
+
+static const struct intel_cdclk_funcs i865g_cdclk_funcs = {
+	.get_cdclk = fixed_266mhz_get_cdclk,
+	.modeset_calc_cdclk = fixed_modeset_calc_cdclk,
+};
+
+static const struct intel_cdclk_funcs i85x_cdclk_funcs = {
+	.get_cdclk = i85x_get_cdclk,
+	.modeset_calc_cdclk = fixed_modeset_calc_cdclk,
+};
+
+static const struct intel_cdclk_funcs i845g_cdclk_funcs = {
+	.get_cdclk = fixed_200mhz_get_cdclk,
+	.modeset_calc_cdclk = fixed_modeset_calc_cdclk,
+};
+
+static const struct intel_cdclk_funcs i830_cdclk_funcs = {
+	.get_cdclk = fixed_133mhz_get_cdclk,
+	.modeset_calc_cdclk = fixed_modeset_calc_cdclk,
+};
+
+/**
+ * intel_init_cdclk_hooks - Initialize CDCLK related modesetting hooks
+ * @dev_priv: i915 device
+ */
+void intel_init_cdclk_hooks(struct drm_i915_private *dev_priv)
+{
+	if (IS_DG2(dev_priv)) {
+		dev_priv->display.funcs.cdclk = &tgl_cdclk_funcs;
+		dev_priv->display.cdclk.table = dg2_cdclk_table;
+	} else if (IS_ALDERLAKE_P(dev_priv)) {
+		dev_priv->display.funcs.cdclk = &tgl_cdclk_funcs;
+		/* Wa_22011320316:adl-p[a0] */
+		if (IS_ADLP_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0))
+			dev_priv->display.cdclk.table = adlp_a_step_cdclk_table;
+		else
+			dev_priv->display.cdclk.table = adlp_cdclk_table;
+	} else if (IS_ROCKETLAKE(dev_priv)) {
+		dev_priv->display.funcs.cdclk = &tgl_cdclk_funcs;
+		dev_priv->display.cdclk.table = rkl_cdclk_table;
+	} else if (DISPLAY_VER(dev_priv) >= 12) {
+		dev_priv->display.funcs.cdclk = &tgl_cdclk_funcs;
+		dev_priv->display.cdclk.table = icl_cdclk_table;
+	} else if (IS_JSL_EHL(dev_priv)) {
+		dev_priv->display.funcs.cdclk = &ehl_cdclk_funcs;
+		dev_priv->display.cdclk.table = icl_cdclk_table;
+	} else if (DISPLAY_VER(dev_priv) >= 11) {
+		dev_priv->display.funcs.cdclk = &icl_cdclk_funcs;
+		dev_priv->display.cdclk.table = icl_cdclk_table;
+	} else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) {
+		dev_priv->display.funcs.cdclk = &bxt_cdclk_funcs;
+		if (IS_GEMINILAKE(dev_priv))
+			dev_priv->display.cdclk.table = glk_cdclk_table;
+		else
+			dev_priv->display.cdclk.table = bxt_cdclk_table;
+	} else if (DISPLAY_VER(dev_priv) == 9) {
+		dev_priv->display.funcs.cdclk = &skl_cdclk_funcs;
+	} else if (IS_BROADWELL(dev_priv)) {
+		dev_priv->display.funcs.cdclk = &bdw_cdclk_funcs;
+	} else if (IS_HASWELL(dev_priv)) {
+		dev_priv->display.funcs.cdclk = &hsw_cdclk_funcs;
+	} else if (IS_CHERRYVIEW(dev_priv)) {
+		dev_priv->display.funcs.cdclk = &chv_cdclk_funcs;
+	} else if (IS_VALLEYVIEW(dev_priv)) {
+		dev_priv->display.funcs.cdclk = &vlv_cdclk_funcs;
+	} else if (IS_SANDYBRIDGE(dev_priv) || IS_IVYBRIDGE(dev_priv)) {
+		dev_priv->display.funcs.cdclk = &fixed_400mhz_cdclk_funcs;
+	} else if (IS_IRONLAKE(dev_priv)) {
+		dev_priv->display.funcs.cdclk = &ilk_cdclk_funcs;
+	} else if (IS_GM45(dev_priv)) {
+		dev_priv->display.funcs.cdclk = &gm45_cdclk_funcs;
+	} else if (IS_G45(dev_priv)) {
+		dev_priv->display.funcs.cdclk = &g33_cdclk_funcs;
+	} else if (IS_I965GM(dev_priv)) {
+		dev_priv->display.funcs.cdclk = &i965gm_cdclk_funcs;
+	} else if (IS_I965G(dev_priv)) {
+		dev_priv->display.funcs.cdclk = &fixed_400mhz_cdclk_funcs;
+	} else if (IS_PINEVIEW(dev_priv)) {
+		dev_priv->display.funcs.cdclk = &pnv_cdclk_funcs;
+	} else if (IS_G33(dev_priv)) {
+		dev_priv->display.funcs.cdclk = &g33_cdclk_funcs;
+	} else if (IS_I945GM(dev_priv)) {
+		dev_priv->display.funcs.cdclk = &i945gm_cdclk_funcs;
+	} else if (IS_I945G(dev_priv)) {
+		dev_priv->display.funcs.cdclk = &fixed_400mhz_cdclk_funcs;
+	} else if (IS_I915GM(dev_priv)) {
+		dev_priv->display.funcs.cdclk = &i915gm_cdclk_funcs;
+	} else if (IS_I915G(dev_priv)) {
+		dev_priv->display.funcs.cdclk = &i915g_cdclk_funcs;
+	} else if (IS_I865G(dev_priv)) {
+		dev_priv->display.funcs.cdclk = &i865g_cdclk_funcs;
+	} else if (IS_I85X(dev_priv)) {
+		dev_priv->display.funcs.cdclk = &i85x_cdclk_funcs;
+	} else if (IS_I845G(dev_priv)) {
+		dev_priv->display.funcs.cdclk = &i845g_cdclk_funcs;
+	} else if (IS_I830(dev_priv)) {
+		dev_priv->display.funcs.cdclk = &i830_cdclk_funcs;
+	}
+
+	if (drm_WARN(&dev_priv->drm, !dev_priv->display.funcs.cdclk,
+		     "Unknown platform. Assuming i830\n"))
+		dev_priv->display.funcs.cdclk = &i830_cdclk_funcs;
+}
diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.h b/drivers/gpu/drm/i915/display/intel_cdclk.h
new file mode 100644
index 000000000..c674879a8
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_cdclk.h
@@ -0,0 +1,86 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_CDCLK_H__
+#define __INTEL_CDCLK_H__
+
+#include <linux/types.h>
+
+#include "intel_display.h"
+#include "intel_global_state.h"
+
+struct drm_i915_private;
+struct intel_atomic_state;
+struct intel_crtc_state;
+
+struct intel_cdclk_config {
+	unsigned int cdclk, vco, ref, bypass;
+	u8 voltage_level;
+};
+
+struct intel_cdclk_state {
+	struct intel_global_state base;
+
+	/*
+	 * Logical configuration of cdclk (used for all scaling,
+	 * watermark, etc. calculations and checks). This is
+	 * computed as if all enabled crtcs were active.
+	 */
+	struct intel_cdclk_config logical;
+
+	/*
+	 * Actual configuration of cdclk, can be different from the
+	 * logical configuration only when all crtc's are DPMS off.
+	 */
+	struct intel_cdclk_config actual;
+
+	/* minimum acceptable cdclk to satisfy bandwidth requirements */
+	int bw_min_cdclk;
+	/* minimum acceptable cdclk for each pipe */
+	int min_cdclk[I915_MAX_PIPES];
+	/* minimum acceptable voltage level for each pipe */
+	u8 min_voltage_level[I915_MAX_PIPES];
+
+	/* pipe to which cd2x update is synchronized */
+	enum pipe pipe;
+
+	/* forced minimum cdclk for glk+ audio w/a */
+	int force_min_cdclk;
+
+	/* bitmask of active pipes */
+	u8 active_pipes;
+};
+
+int intel_crtc_compute_min_cdclk(const struct intel_crtc_state *crtc_state);
+void intel_cdclk_init_hw(struct drm_i915_private *i915);
+void intel_cdclk_uninit_hw(struct drm_i915_private *i915);
+void intel_init_cdclk_hooks(struct drm_i915_private *dev_priv);
+void intel_update_max_cdclk(struct drm_i915_private *dev_priv);
+void intel_update_cdclk(struct drm_i915_private *dev_priv);
+u32 intel_read_rawclk(struct drm_i915_private *dev_priv);
+bool intel_cdclk_needs_modeset(const struct intel_cdclk_config *a,
+			       const struct intel_cdclk_config *b);
+void intel_set_cdclk_pre_plane_update(struct intel_atomic_state *state);
+void intel_set_cdclk_post_plane_update(struct intel_atomic_state *state);
+void intel_cdclk_dump_config(struct drm_i915_private *i915,
+			     const struct intel_cdclk_config *cdclk_config,
+			     const char *context);
+int intel_modeset_calc_cdclk(struct intel_atomic_state *state);
+void intel_cdclk_get_cdclk(struct drm_i915_private *dev_priv,
+			   struct intel_cdclk_config *cdclk_config);
+int intel_cdclk_atomic_check(struct intel_atomic_state *state,
+			     bool *need_cdclk_calc);
+struct intel_cdclk_state *
+intel_atomic_get_cdclk_state(struct intel_atomic_state *state);
+
+#define to_intel_cdclk_state(x) container_of((x), struct intel_cdclk_state, base)
+#define intel_atomic_get_old_cdclk_state(state) \
+	to_intel_cdclk_state(intel_atomic_get_old_global_obj_state(state, &to_i915(state->base.dev)->display.cdclk.obj))
+#define intel_atomic_get_new_cdclk_state(state) \
+	to_intel_cdclk_state(intel_atomic_get_new_global_obj_state(state, &to_i915(state->base.dev)->display.cdclk.obj))
+
+int intel_cdclk_init(struct drm_i915_private *dev_priv);
+
+#endif /* __INTEL_CDCLK_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_color.c b/drivers/gpu/drm/i915/display/intel_color.c
new file mode 100644
index 000000000..78211e583
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_color.c
@@ -0,0 +1,2295 @@
+/*
+ * Copyright © 2016 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#include "intel_color.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_dpll.h"
+#include "intel_dsb.h"
+#include "vlv_dsi_pll.h"
+
+struct intel_color_funcs {
+	int (*color_check)(struct intel_crtc_state *crtc_state);
+	/*
+	 * Program non-arming double buffered color management registers
+	 * before vblank evasion. The registers should then latch after
+	 * the arming register is written (by color_commit_arm()) during
+	 * the next vblank start, alongside any other double buffered
+	 * registers involved with the same commit. This hook is optional.
+	 */
+	void (*color_commit_noarm)(const struct intel_crtc_state *crtc_state);
+	/*
+	 * Program arming double buffered color management registers
+	 * during vblank evasion. The registers (and whatever other registers
+	 * they arm that were written by color_commit_noarm) should then latch
+	 * during the next vblank start, alongside any other double buffered
+	 * registers involved with the same commit.
+	 */
+	void (*color_commit_arm)(const struct intel_crtc_state *crtc_state);
+	/*
+	 * Load LUTs (and other single buffered color management
+	 * registers). Will (hopefully) be called during the vblank
+	 * following the latching of any double buffered registers
+	 * involved with the same commit.
+	 */
+	void (*load_luts)(const struct intel_crtc_state *crtc_state);
+	void (*read_luts)(struct intel_crtc_state *crtc_state);
+};
+
+#define CTM_COEFF_SIGN	(1ULL << 63)
+
+#define CTM_COEFF_1_0	(1ULL << 32)
+#define CTM_COEFF_2_0	(CTM_COEFF_1_0 << 1)
+#define CTM_COEFF_4_0	(CTM_COEFF_2_0 << 1)
+#define CTM_COEFF_8_0	(CTM_COEFF_4_0 << 1)
+#define CTM_COEFF_0_5	(CTM_COEFF_1_0 >> 1)
+#define CTM_COEFF_0_25	(CTM_COEFF_0_5 >> 1)
+#define CTM_COEFF_0_125	(CTM_COEFF_0_25 >> 1)
+
+#define CTM_COEFF_LIMITED_RANGE ((235ULL - 16ULL) * CTM_COEFF_1_0 / 255)
+
+#define CTM_COEFF_NEGATIVE(coeff)	(((coeff) & CTM_COEFF_SIGN) != 0)
+#define CTM_COEFF_ABS(coeff)		((coeff) & (CTM_COEFF_SIGN - 1))
+
+#define LEGACY_LUT_LENGTH		256
+
+/*
+ * ILK+ csc matrix:
+ *
+ * |R/Cr|   | c0 c1 c2 |   ( |R/Cr|   |preoff0| )   |postoff0|
+ * |G/Y | = | c3 c4 c5 | x ( |G/Y | + |preoff1| ) + |postoff1|
+ * |B/Cb|   | c6 c7 c8 |   ( |B/Cb|   |preoff2| )   |postoff2|
+ *
+ * ILK/SNB don't have explicit post offsets, and instead
+ * CSC_MODE_YUV_TO_RGB and CSC_BLACK_SCREEN_OFFSET are used:
+ *  CSC_MODE_YUV_TO_RGB=0 + CSC_BLACK_SCREEN_OFFSET=0 -> 1/2, 0, 1/2
+ *  CSC_MODE_YUV_TO_RGB=0 + CSC_BLACK_SCREEN_OFFSET=1 -> 1/2, 1/16, 1/2
+ *  CSC_MODE_YUV_TO_RGB=1 + CSC_BLACK_SCREEN_OFFSET=0 -> 0, 0, 0
+ *  CSC_MODE_YUV_TO_RGB=1 + CSC_BLACK_SCREEN_OFFSET=1 -> 1/16, 1/16, 1/16
+ */
+
+/*
+ * Extract the CSC coefficient from a CTM coefficient (in U32.32 fixed point
+ * format). This macro takes the coefficient we want transformed and the
+ * number of fractional bits.
+ *
+ * We only have a 9 bits precision window which slides depending on the value
+ * of the CTM coefficient and we write the value from bit 3. We also round the
+ * value.
+ */
+#define ILK_CSC_COEFF_FP(coeff, fbits)	\
+	(clamp_val(((coeff) >> (32 - (fbits) - 3)) + 4, 0, 0xfff) & 0xff8)
+
+#define ILK_CSC_COEFF_LIMITED_RANGE 0x0dc0
+#define ILK_CSC_COEFF_1_0 0x7800
+
+#define ILK_CSC_POSTOFF_LIMITED_RANGE (16 * (1 << 12) / 255)
+
+/* Nop pre/post offsets */
+static const u16 ilk_csc_off_zero[3] = {};
+
+/* Identity matrix */
+static const u16 ilk_csc_coeff_identity[9] = {
+	ILK_CSC_COEFF_1_0, 0, 0,
+	0, ILK_CSC_COEFF_1_0, 0,
+	0, 0, ILK_CSC_COEFF_1_0,
+};
+
+/* Limited range RGB post offsets */
+static const u16 ilk_csc_postoff_limited_range[3] = {
+	ILK_CSC_POSTOFF_LIMITED_RANGE,
+	ILK_CSC_POSTOFF_LIMITED_RANGE,
+	ILK_CSC_POSTOFF_LIMITED_RANGE,
+};
+
+/* Full range RGB -> limited range RGB matrix */
+static const u16 ilk_csc_coeff_limited_range[9] = {
+	ILK_CSC_COEFF_LIMITED_RANGE, 0, 0,
+	0, ILK_CSC_COEFF_LIMITED_RANGE, 0,
+	0, 0, ILK_CSC_COEFF_LIMITED_RANGE,
+};
+
+/* BT.709 full range RGB -> limited range YCbCr matrix */
+static const u16 ilk_csc_coeff_rgb_to_ycbcr[9] = {
+	0x1e08, 0x9cc0, 0xb528,
+	0x2ba8, 0x09d8, 0x37e8,
+	0xbce8, 0x9ad8, 0x1e08,
+};
+
+/* Limited range YCbCr post offsets */
+static const u16 ilk_csc_postoff_rgb_to_ycbcr[3] = {
+	0x0800, 0x0100, 0x0800,
+};
+
+static bool lut_is_legacy(const struct drm_property_blob *lut)
+{
+	return drm_color_lut_size(lut) == LEGACY_LUT_LENGTH;
+}
+
+static bool crtc_state_is_legacy_gamma(const struct intel_crtc_state *crtc_state)
+{
+	return !crtc_state->hw.degamma_lut &&
+		!crtc_state->hw.ctm &&
+		crtc_state->hw.gamma_lut &&
+		lut_is_legacy(crtc_state->hw.gamma_lut);
+}
+
+/*
+ * When using limited range, multiply the matrix given by userspace by
+ * the matrix that we would use for the limited range.
+ */
+static u64 *ctm_mult_by_limited(u64 *result, const u64 *input)
+{
+	int i;
+
+	for (i = 0; i < 9; i++) {
+		u64 user_coeff = input[i];
+		u32 limited_coeff = CTM_COEFF_LIMITED_RANGE;
+		u32 abs_coeff = clamp_val(CTM_COEFF_ABS(user_coeff), 0,
+					  CTM_COEFF_4_0 - 1) >> 2;
+
+		/*
+		 * By scaling every co-efficient with limited range (16-235)
+		 * vs full range (0-255) the final o/p will be scaled down to
+		 * fit in the limited range supported by the panel.
+		 */
+		result[i] = mul_u32_u32(limited_coeff, abs_coeff) >> 30;
+		result[i] |= user_coeff & CTM_COEFF_SIGN;
+	}
+
+	return result;
+}
+
+static void ilk_update_pipe_csc(struct intel_crtc *crtc,
+				const u16 preoff[3],
+				const u16 coeff[9],
+				const u16 postoff[3])
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+
+	intel_de_write_fw(dev_priv, PIPE_CSC_PREOFF_HI(pipe), preoff[0]);
+	intel_de_write_fw(dev_priv, PIPE_CSC_PREOFF_ME(pipe), preoff[1]);
+	intel_de_write_fw(dev_priv, PIPE_CSC_PREOFF_LO(pipe), preoff[2]);
+
+	intel_de_write_fw(dev_priv, PIPE_CSC_COEFF_RY_GY(pipe),
+			  coeff[0] << 16 | coeff[1]);
+	intel_de_write_fw(dev_priv, PIPE_CSC_COEFF_BY(pipe), coeff[2] << 16);
+
+	intel_de_write_fw(dev_priv, PIPE_CSC_COEFF_RU_GU(pipe),
+			  coeff[3] << 16 | coeff[4]);
+	intel_de_write_fw(dev_priv, PIPE_CSC_COEFF_BU(pipe), coeff[5] << 16);
+
+	intel_de_write_fw(dev_priv, PIPE_CSC_COEFF_RV_GV(pipe),
+			  coeff[6] << 16 | coeff[7]);
+	intel_de_write_fw(dev_priv, PIPE_CSC_COEFF_BV(pipe), coeff[8] << 16);
+
+	if (DISPLAY_VER(dev_priv) >= 7) {
+		intel_de_write_fw(dev_priv, PIPE_CSC_POSTOFF_HI(pipe),
+				  postoff[0]);
+		intel_de_write_fw(dev_priv, PIPE_CSC_POSTOFF_ME(pipe),
+				  postoff[1]);
+		intel_de_write_fw(dev_priv, PIPE_CSC_POSTOFF_LO(pipe),
+				  postoff[2]);
+	}
+}
+
+static void icl_update_output_csc(struct intel_crtc *crtc,
+				  const u16 preoff[3],
+				  const u16 coeff[9],
+				  const u16 postoff[3])
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+
+	intel_de_write_fw(dev_priv, PIPE_CSC_OUTPUT_PREOFF_HI(pipe), preoff[0]);
+	intel_de_write_fw(dev_priv, PIPE_CSC_OUTPUT_PREOFF_ME(pipe), preoff[1]);
+	intel_de_write_fw(dev_priv, PIPE_CSC_OUTPUT_PREOFF_LO(pipe), preoff[2]);
+
+	intel_de_write_fw(dev_priv, PIPE_CSC_OUTPUT_COEFF_RY_GY(pipe),
+			  coeff[0] << 16 | coeff[1]);
+	intel_de_write_fw(dev_priv, PIPE_CSC_OUTPUT_COEFF_BY(pipe),
+			  coeff[2] << 16);
+
+	intel_de_write_fw(dev_priv, PIPE_CSC_OUTPUT_COEFF_RU_GU(pipe),
+			  coeff[3] << 16 | coeff[4]);
+	intel_de_write_fw(dev_priv, PIPE_CSC_OUTPUT_COEFF_BU(pipe),
+			  coeff[5] << 16);
+
+	intel_de_write_fw(dev_priv, PIPE_CSC_OUTPUT_COEFF_RV_GV(pipe),
+			  coeff[6] << 16 | coeff[7]);
+	intel_de_write_fw(dev_priv, PIPE_CSC_OUTPUT_COEFF_BV(pipe),
+			  coeff[8] << 16);
+
+	intel_de_write_fw(dev_priv, PIPE_CSC_OUTPUT_POSTOFF_HI(pipe), postoff[0]);
+	intel_de_write_fw(dev_priv, PIPE_CSC_OUTPUT_POSTOFF_ME(pipe), postoff[1]);
+	intel_de_write_fw(dev_priv, PIPE_CSC_OUTPUT_POSTOFF_LO(pipe), postoff[2]);
+}
+
+static bool ilk_csc_limited_range(const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+
+	/*
+	 * FIXME if there's a gamma LUT after the CSC, we should
+	 * do the range compression using the gamma LUT instead.
+	 */
+	return crtc_state->limited_color_range &&
+		(IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv) ||
+		 IS_DISPLAY_VER(dev_priv, 9, 10));
+}
+
+static void ilk_csc_convert_ctm(const struct intel_crtc_state *crtc_state,
+				u16 coeffs[9])
+{
+	const struct drm_color_ctm *ctm = crtc_state->hw.ctm->data;
+	const u64 *input;
+	u64 temp[9];
+	int i;
+
+	if (ilk_csc_limited_range(crtc_state))
+		input = ctm_mult_by_limited(temp, ctm->matrix);
+	else
+		input = ctm->matrix;
+
+	/*
+	 * Convert fixed point S31.32 input to format supported by the
+	 * hardware.
+	 */
+	for (i = 0; i < 9; i++) {
+		u64 abs_coeff = ((1ULL << 63) - 1) & input[i];
+
+		/*
+		 * Clamp input value to min/max supported by
+		 * hardware.
+		 */
+		abs_coeff = clamp_val(abs_coeff, 0, CTM_COEFF_4_0 - 1);
+
+		coeffs[i] = 0;
+
+		/* sign bit */
+		if (CTM_COEFF_NEGATIVE(input[i]))
+			coeffs[i] |= 1 << 15;
+
+		if (abs_coeff < CTM_COEFF_0_125)
+			coeffs[i] |= (3 << 12) |
+				ILK_CSC_COEFF_FP(abs_coeff, 12);
+		else if (abs_coeff < CTM_COEFF_0_25)
+			coeffs[i] |= (2 << 12) |
+				ILK_CSC_COEFF_FP(abs_coeff, 11);
+		else if (abs_coeff < CTM_COEFF_0_5)
+			coeffs[i] |= (1 << 12) |
+				ILK_CSC_COEFF_FP(abs_coeff, 10);
+		else if (abs_coeff < CTM_COEFF_1_0)
+			coeffs[i] |= ILK_CSC_COEFF_FP(abs_coeff, 9);
+		else if (abs_coeff < CTM_COEFF_2_0)
+			coeffs[i] |= (7 << 12) |
+				ILK_CSC_COEFF_FP(abs_coeff, 8);
+		else
+			coeffs[i] |= (6 << 12) |
+				ILK_CSC_COEFF_FP(abs_coeff, 7);
+	}
+}
+
+static void ilk_load_csc_matrix(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	bool limited_color_range = ilk_csc_limited_range(crtc_state);
+
+	if (crtc_state->hw.ctm) {
+		u16 coeff[9];
+
+		ilk_csc_convert_ctm(crtc_state, coeff);
+		ilk_update_pipe_csc(crtc, ilk_csc_off_zero, coeff,
+				    limited_color_range ?
+				    ilk_csc_postoff_limited_range :
+				    ilk_csc_off_zero);
+	} else if (crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB) {
+		ilk_update_pipe_csc(crtc, ilk_csc_off_zero,
+				    ilk_csc_coeff_rgb_to_ycbcr,
+				    ilk_csc_postoff_rgb_to_ycbcr);
+	} else if (limited_color_range) {
+		ilk_update_pipe_csc(crtc, ilk_csc_off_zero,
+				    ilk_csc_coeff_limited_range,
+				    ilk_csc_postoff_limited_range);
+	} else if (crtc_state->csc_enable) {
+		/*
+		 * On GLK both pipe CSC and degamma LUT are controlled
+		 * by csc_enable. Hence for the cases where the degama
+		 * LUT is needed but CSC is not we need to load an
+		 * identity matrix.
+		 */
+		drm_WARN_ON(&dev_priv->drm, !IS_GEMINILAKE(dev_priv));
+
+		ilk_update_pipe_csc(crtc, ilk_csc_off_zero,
+				    ilk_csc_coeff_identity,
+				    ilk_csc_off_zero);
+	}
+}
+
+static void icl_load_csc_matrix(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+
+	if (crtc_state->hw.ctm) {
+		u16 coeff[9];
+
+		ilk_csc_convert_ctm(crtc_state, coeff);
+		ilk_update_pipe_csc(crtc, ilk_csc_off_zero,
+				    coeff, ilk_csc_off_zero);
+	}
+
+	if (crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB) {
+		icl_update_output_csc(crtc, ilk_csc_off_zero,
+				      ilk_csc_coeff_rgb_to_ycbcr,
+				      ilk_csc_postoff_rgb_to_ycbcr);
+	} else if (crtc_state->limited_color_range) {
+		icl_update_output_csc(crtc, ilk_csc_off_zero,
+				      ilk_csc_coeff_limited_range,
+				      ilk_csc_postoff_limited_range);
+	}
+}
+
+static void chv_load_cgm_csc(struct intel_crtc *crtc,
+			     const struct drm_property_blob *blob)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	const struct drm_color_ctm *ctm = blob->data;
+	enum pipe pipe = crtc->pipe;
+	u16 coeffs[9];
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(coeffs); i++) {
+		u64 abs_coeff = ((1ULL << 63) - 1) & ctm->matrix[i];
+
+		/* Round coefficient. */
+		abs_coeff += 1 << (32 - 13);
+		/* Clamp to hardware limits. */
+		abs_coeff = clamp_val(abs_coeff, 0, CTM_COEFF_8_0 - 1);
+
+		coeffs[i] = 0;
+
+		/* Write coefficients in S3.12 format. */
+		if (ctm->matrix[i] & (1ULL << 63))
+			coeffs[i] |= 1 << 15;
+
+		coeffs[i] |= ((abs_coeff >> 32) & 7) << 12;
+		coeffs[i] |= (abs_coeff >> 20) & 0xfff;
+	}
+
+	intel_de_write_fw(dev_priv, CGM_PIPE_CSC_COEFF01(pipe),
+			  coeffs[1] << 16 | coeffs[0]);
+	intel_de_write_fw(dev_priv, CGM_PIPE_CSC_COEFF23(pipe),
+			  coeffs[3] << 16 | coeffs[2]);
+	intel_de_write_fw(dev_priv, CGM_PIPE_CSC_COEFF45(pipe),
+			  coeffs[5] << 16 | coeffs[4]);
+	intel_de_write_fw(dev_priv, CGM_PIPE_CSC_COEFF67(pipe),
+			  coeffs[7] << 16 | coeffs[6]);
+	intel_de_write_fw(dev_priv, CGM_PIPE_CSC_COEFF8(pipe),
+			  coeffs[8]);
+}
+
+/* convert hw value with given bit_precision to lut property val */
+static u32 intel_color_lut_pack(u32 val, int bit_precision)
+{
+	u32 max = 0xffff >> (16 - bit_precision);
+
+	val = clamp_val(val, 0, max);
+
+	if (bit_precision < 16)
+		val <<= 16 - bit_precision;
+
+	return val;
+}
+
+static u32 i9xx_lut_8(const struct drm_color_lut *color)
+{
+	return drm_color_lut_extract(color->red, 8) << 16 |
+		drm_color_lut_extract(color->green, 8) << 8 |
+		drm_color_lut_extract(color->blue, 8);
+}
+
+static void i9xx_lut_8_pack(struct drm_color_lut *entry, u32 val)
+{
+	entry->red = intel_color_lut_pack(REG_FIELD_GET(LGC_PALETTE_RED_MASK, val), 8);
+	entry->green = intel_color_lut_pack(REG_FIELD_GET(LGC_PALETTE_GREEN_MASK, val), 8);
+	entry->blue = intel_color_lut_pack(REG_FIELD_GET(LGC_PALETTE_BLUE_MASK, val), 8);
+}
+
+/* i965+ "10.6" bit interpolated format "even DW" (low 8 bits) */
+static u32 i965_lut_10p6_ldw(const struct drm_color_lut *color)
+{
+	return (color->red & 0xff) << 16 |
+		(color->green & 0xff) << 8 |
+		(color->blue & 0xff);
+}
+
+/* i965+ "10.6" interpolated format "odd DW" (high 8 bits) */
+static u32 i965_lut_10p6_udw(const struct drm_color_lut *color)
+{
+	return (color->red >> 8) << 16 |
+		(color->green >> 8) << 8 |
+		(color->blue >> 8);
+}
+
+static void i965_lut_10p6_pack(struct drm_color_lut *entry, u32 ldw, u32 udw)
+{
+	entry->red = REG_FIELD_GET(PALETTE_RED_MASK, udw) << 8 |
+		REG_FIELD_GET(PALETTE_RED_MASK, ldw);
+	entry->green = REG_FIELD_GET(PALETTE_GREEN_MASK, udw) << 8 |
+		REG_FIELD_GET(PALETTE_GREEN_MASK, ldw);
+	entry->blue = REG_FIELD_GET(PALETTE_BLUE_MASK, udw) << 8 |
+		REG_FIELD_GET(PALETTE_BLUE_MASK, ldw);
+}
+
+static u16 i965_lut_11p6_max_pack(u32 val)
+{
+	/* PIPEGCMAX is 11.6, clamp to 10.6 */
+	return clamp_val(val, 0, 0xffff);
+}
+
+static u32 ilk_lut_10(const struct drm_color_lut *color)
+{
+	return drm_color_lut_extract(color->red, 10) << 20 |
+		drm_color_lut_extract(color->green, 10) << 10 |
+		drm_color_lut_extract(color->blue, 10);
+}
+
+static void ilk_lut_10_pack(struct drm_color_lut *entry, u32 val)
+{
+	entry->red = intel_color_lut_pack(REG_FIELD_GET(PREC_PALETTE_RED_MASK, val), 10);
+	entry->green = intel_color_lut_pack(REG_FIELD_GET(PREC_PALETTE_GREEN_MASK, val), 10);
+	entry->blue = intel_color_lut_pack(REG_FIELD_GET(PREC_PALETTE_BLUE_MASK, val), 10);
+}
+
+static void icl_lut_multi_seg_pack(struct drm_color_lut *entry, u32 ldw, u32 udw)
+{
+	entry->red = REG_FIELD_GET(PAL_PREC_MULTI_SEG_RED_UDW_MASK, udw) << 6 |
+				   REG_FIELD_GET(PAL_PREC_MULTI_SEG_RED_LDW_MASK, ldw);
+	entry->green = REG_FIELD_GET(PAL_PREC_MULTI_SEG_GREEN_UDW_MASK, udw) << 6 |
+				     REG_FIELD_GET(PAL_PREC_MULTI_SEG_GREEN_LDW_MASK, ldw);
+	entry->blue = REG_FIELD_GET(PAL_PREC_MULTI_SEG_BLUE_UDW_MASK, udw) << 6 |
+				    REG_FIELD_GET(PAL_PREC_MULTI_SEG_BLUE_LDW_MASK, ldw);
+}
+
+static void icl_color_commit_noarm(const struct intel_crtc_state *crtc_state)
+{
+	icl_load_csc_matrix(crtc_state);
+}
+
+static void skl_color_commit_noarm(const struct intel_crtc_state *crtc_state)
+{
+	/*
+	 * Possibly related to display WA #1184, SKL CSC loses the latched
+	 * CSC coeff/offset register values if the CSC registers are disarmed
+	 * between DC5 exit and PSR exit. This will cause the plane(s) to
+	 * output all black (until CSC_MODE is rearmed and properly latched).
+	 * Once PSR exit (and proper register latching) has occurred the
+	 * danger is over. Thus when PSR is enabled the CSC coeff/offset
+	 * register programming will be peformed from skl_color_commit_arm()
+	 * which is called after PSR exit.
+	 */
+	if (!crtc_state->has_psr)
+		ilk_load_csc_matrix(crtc_state);
+}
+
+static void ilk_color_commit_noarm(const struct intel_crtc_state *crtc_state)
+{
+	ilk_load_csc_matrix(crtc_state);
+}
+
+static void i9xx_color_commit_arm(const struct intel_crtc_state *crtc_state)
+{
+	/* update PIPECONF GAMMA_MODE */
+	i9xx_set_pipeconf(crtc_state);
+}
+
+static void ilk_color_commit_arm(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+
+	/* update PIPECONF GAMMA_MODE */
+	ilk_set_pipeconf(crtc_state);
+
+	intel_de_write_fw(dev_priv, PIPE_CSC_MODE(crtc->pipe),
+			  crtc_state->csc_mode);
+}
+
+static void hsw_color_commit_arm(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+
+	intel_de_write(dev_priv, GAMMA_MODE(crtc->pipe),
+		       crtc_state->gamma_mode);
+
+	intel_de_write_fw(dev_priv, PIPE_CSC_MODE(crtc->pipe),
+			  crtc_state->csc_mode);
+}
+
+static void skl_color_commit_arm(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+	u32 val = 0;
+
+	if (crtc_state->has_psr)
+		ilk_load_csc_matrix(crtc_state);
+
+	/*
+	 * We don't (yet) allow userspace to control the pipe background color,
+	 * so force it to black, but apply pipe gamma and CSC appropriately
+	 * so that its handling will match how we program our planes.
+	 */
+	if (crtc_state->gamma_enable)
+		val |= SKL_BOTTOM_COLOR_GAMMA_ENABLE;
+	if (crtc_state->csc_enable)
+		val |= SKL_BOTTOM_COLOR_CSC_ENABLE;
+	intel_de_write(dev_priv, SKL_BOTTOM_COLOR(pipe), val);
+
+	intel_de_write(dev_priv, GAMMA_MODE(crtc->pipe),
+		       crtc_state->gamma_mode);
+
+	intel_de_write_fw(dev_priv, PIPE_CSC_MODE(crtc->pipe),
+			  crtc_state->csc_mode);
+}
+
+static void i9xx_load_lut_8(struct intel_crtc *crtc,
+			    const struct drm_property_blob *blob)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	const struct drm_color_lut *lut;
+	enum pipe pipe = crtc->pipe;
+	int i;
+
+	if (!blob)
+		return;
+
+	lut = blob->data;
+
+	for (i = 0; i < 256; i++)
+		intel_de_write_fw(dev_priv, PALETTE(pipe, i),
+				  i9xx_lut_8(&lut[i]));
+}
+
+static void i9xx_load_luts(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	const struct drm_property_blob *gamma_lut = crtc_state->hw.gamma_lut;
+
+	assert_pll_enabled(dev_priv, crtc->pipe);
+
+	i9xx_load_lut_8(crtc, gamma_lut);
+}
+
+static void i965_load_lut_10p6(struct intel_crtc *crtc,
+			       const struct drm_property_blob *blob)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	const struct drm_color_lut *lut = blob->data;
+	int i, lut_size = drm_color_lut_size(blob);
+	enum pipe pipe = crtc->pipe;
+
+	for (i = 0; i < lut_size - 1; i++) {
+		intel_de_write_fw(dev_priv, PALETTE(pipe, 2 * i + 0),
+				  i965_lut_10p6_ldw(&lut[i]));
+		intel_de_write_fw(dev_priv, PALETTE(pipe, 2 * i + 1),
+				  i965_lut_10p6_udw(&lut[i]));
+	}
+
+	intel_de_write_fw(dev_priv, PIPEGCMAX(pipe, 0), lut[i].red);
+	intel_de_write_fw(dev_priv, PIPEGCMAX(pipe, 1), lut[i].green);
+	intel_de_write_fw(dev_priv, PIPEGCMAX(pipe, 2), lut[i].blue);
+}
+
+static void i965_load_luts(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	const struct drm_property_blob *gamma_lut = crtc_state->hw.gamma_lut;
+
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI))
+		assert_dsi_pll_enabled(dev_priv);
+	else
+		assert_pll_enabled(dev_priv, crtc->pipe);
+
+	if (crtc_state->gamma_mode == GAMMA_MODE_MODE_8BIT)
+		i9xx_load_lut_8(crtc, gamma_lut);
+	else
+		i965_load_lut_10p6(crtc, gamma_lut);
+}
+
+static void ilk_load_lut_8(struct intel_crtc *crtc,
+			   const struct drm_property_blob *blob)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	const struct drm_color_lut *lut;
+	enum pipe pipe = crtc->pipe;
+	int i;
+
+	if (!blob)
+		return;
+
+	lut = blob->data;
+
+	for (i = 0; i < 256; i++)
+		intel_de_write_fw(dev_priv, LGC_PALETTE(pipe, i),
+				  i9xx_lut_8(&lut[i]));
+}
+
+static void ilk_load_lut_10(struct intel_crtc *crtc,
+			    const struct drm_property_blob *blob)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	const struct drm_color_lut *lut = blob->data;
+	int i, lut_size = drm_color_lut_size(blob);
+	enum pipe pipe = crtc->pipe;
+
+	for (i = 0; i < lut_size; i++)
+		intel_de_write_fw(dev_priv, PREC_PALETTE(pipe, i),
+				  ilk_lut_10(&lut[i]));
+}
+
+static void ilk_load_luts(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	const struct drm_property_blob *gamma_lut = crtc_state->hw.gamma_lut;
+
+	switch (crtc_state->gamma_mode) {
+	case GAMMA_MODE_MODE_8BIT:
+		ilk_load_lut_8(crtc, gamma_lut);
+		break;
+	case GAMMA_MODE_MODE_10BIT:
+		ilk_load_lut_10(crtc, gamma_lut);
+		break;
+	default:
+		MISSING_CASE(crtc_state->gamma_mode);
+		break;
+	}
+}
+
+static int ivb_lut_10_size(u32 prec_index)
+{
+	if (prec_index & PAL_PREC_SPLIT_MODE)
+		return 512;
+	else
+		return 1024;
+}
+
+/*
+ * IVB/HSW Bspec / PAL_PREC_INDEX:
+ * "Restriction : Index auto increment mode is not
+ *  supported and must not be enabled."
+ */
+static void ivb_load_lut_10(struct intel_crtc *crtc,
+			    const struct drm_property_blob *blob,
+			    u32 prec_index)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	int hw_lut_size = ivb_lut_10_size(prec_index);
+	const struct drm_color_lut *lut = blob->data;
+	int i, lut_size = drm_color_lut_size(blob);
+	enum pipe pipe = crtc->pipe;
+
+	for (i = 0; i < hw_lut_size; i++) {
+		/* We discard half the user entries in split gamma mode */
+		const struct drm_color_lut *entry =
+			&lut[i * (lut_size - 1) / (hw_lut_size - 1)];
+
+		intel_de_write_fw(dev_priv, PREC_PAL_INDEX(pipe), prec_index++);
+		intel_de_write_fw(dev_priv, PREC_PAL_DATA(pipe),
+				  ilk_lut_10(entry));
+	}
+
+	/*
+	 * Reset the index, otherwise it prevents the legacy palette to be
+	 * written properly.
+	 */
+	intel_de_write_fw(dev_priv, PREC_PAL_INDEX(pipe), 0);
+}
+
+/* On BDW+ the index auto increment mode actually works */
+static void bdw_load_lut_10(struct intel_crtc *crtc,
+			    const struct drm_property_blob *blob,
+			    u32 prec_index)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	int hw_lut_size = ivb_lut_10_size(prec_index);
+	const struct drm_color_lut *lut = blob->data;
+	int i, lut_size = drm_color_lut_size(blob);
+	enum pipe pipe = crtc->pipe;
+
+	intel_de_write_fw(dev_priv, PREC_PAL_INDEX(pipe),
+			  prec_index | PAL_PREC_AUTO_INCREMENT);
+
+	for (i = 0; i < hw_lut_size; i++) {
+		/* We discard half the user entries in split gamma mode */
+		const struct drm_color_lut *entry =
+			&lut[i * (lut_size - 1) / (hw_lut_size - 1)];
+
+		intel_de_write_fw(dev_priv, PREC_PAL_DATA(pipe),
+				  ilk_lut_10(entry));
+	}
+
+	/*
+	 * Reset the index, otherwise it prevents the legacy palette to be
+	 * written properly.
+	 */
+	intel_de_write_fw(dev_priv, PREC_PAL_INDEX(pipe), 0);
+}
+
+static void ivb_load_lut_ext_max(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+
+	/* Program the max register to clamp values > 1.0. */
+	intel_dsb_reg_write(crtc_state, PREC_PAL_EXT_GC_MAX(pipe, 0), 1 << 16);
+	intel_dsb_reg_write(crtc_state, PREC_PAL_EXT_GC_MAX(pipe, 1), 1 << 16);
+	intel_dsb_reg_write(crtc_state, PREC_PAL_EXT_GC_MAX(pipe, 2), 1 << 16);
+
+	/*
+	 * Program the gc max 2 register to clamp values > 1.0.
+	 * ToDo: Extend the ABI to be able to program values
+	 * from 3.0 to 7.0
+	 */
+	if (DISPLAY_VER(dev_priv) >= 10) {
+		intel_dsb_reg_write(crtc_state, PREC_PAL_EXT2_GC_MAX(pipe, 0),
+				    1 << 16);
+		intel_dsb_reg_write(crtc_state, PREC_PAL_EXT2_GC_MAX(pipe, 1),
+				    1 << 16);
+		intel_dsb_reg_write(crtc_state, PREC_PAL_EXT2_GC_MAX(pipe, 2),
+				    1 << 16);
+	}
+}
+
+static void ivb_load_luts(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	const struct drm_property_blob *gamma_lut = crtc_state->hw.gamma_lut;
+	const struct drm_property_blob *degamma_lut = crtc_state->hw.degamma_lut;
+	const struct drm_property_blob *blob = gamma_lut ?: degamma_lut;
+
+	switch (crtc_state->gamma_mode) {
+	case GAMMA_MODE_MODE_8BIT:
+		ilk_load_lut_8(crtc, blob);
+		break;
+	case GAMMA_MODE_MODE_SPLIT:
+		ivb_load_lut_10(crtc, degamma_lut, PAL_PREC_SPLIT_MODE |
+				PAL_PREC_INDEX_VALUE(0));
+		ivb_load_lut_ext_max(crtc_state);
+		ivb_load_lut_10(crtc, gamma_lut, PAL_PREC_SPLIT_MODE |
+				PAL_PREC_INDEX_VALUE(512));
+		break;
+	case GAMMA_MODE_MODE_10BIT:
+		ivb_load_lut_10(crtc, blob,
+				PAL_PREC_INDEX_VALUE(0));
+		ivb_load_lut_ext_max(crtc_state);
+		break;
+	default:
+		MISSING_CASE(crtc_state->gamma_mode);
+		break;
+	}
+}
+
+static void bdw_load_luts(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	const struct drm_property_blob *gamma_lut = crtc_state->hw.gamma_lut;
+	const struct drm_property_blob *degamma_lut = crtc_state->hw.degamma_lut;
+	const struct drm_property_blob *blob = gamma_lut ?: degamma_lut;
+
+	switch (crtc_state->gamma_mode) {
+	case GAMMA_MODE_MODE_8BIT:
+		ilk_load_lut_8(crtc, blob);
+		break;
+	case GAMMA_MODE_MODE_SPLIT:
+		bdw_load_lut_10(crtc, degamma_lut, PAL_PREC_SPLIT_MODE |
+				PAL_PREC_INDEX_VALUE(0));
+		ivb_load_lut_ext_max(crtc_state);
+		bdw_load_lut_10(crtc, gamma_lut, PAL_PREC_SPLIT_MODE |
+				PAL_PREC_INDEX_VALUE(512));
+		break;
+	case GAMMA_MODE_MODE_10BIT:
+
+		bdw_load_lut_10(crtc, blob,
+				PAL_PREC_INDEX_VALUE(0));
+		ivb_load_lut_ext_max(crtc_state);
+		break;
+	default:
+		MISSING_CASE(crtc_state->gamma_mode);
+		break;
+	}
+}
+
+static int glk_degamma_lut_size(struct drm_i915_private *i915)
+{
+	if (DISPLAY_VER(i915) >= 13)
+		return 131;
+	else
+		return 35;
+}
+
+static void glk_load_degamma_lut(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+	int i, lut_size = INTEL_INFO(dev_priv)->display.color.degamma_lut_size;
+	const struct drm_color_lut *lut = crtc_state->hw.degamma_lut->data;
+
+	/*
+	 * When setting the auto-increment bit, the hardware seems to
+	 * ignore the index bits, so we need to reset it to index 0
+	 * separately.
+	 */
+	intel_de_write_fw(dev_priv, PRE_CSC_GAMC_INDEX(pipe), 0);
+	intel_de_write_fw(dev_priv, PRE_CSC_GAMC_INDEX(pipe),
+			  PRE_CSC_GAMC_AUTO_INCREMENT);
+
+	for (i = 0; i < lut_size; i++) {
+		/*
+		 * First lut_size entries represent range from 0 to 1.0
+		 * 3 additional lut entries will represent extended range
+		 * inputs 3.0 and 7.0 respectively, currently clamped
+		 * at 1.0. Since the precision is 16bit, the user
+		 * value can be directly filled to register.
+		 * The pipe degamma table in GLK+ onwards doesn't
+		 * support different values per channel, so this just
+		 * programs green value which will be equal to Red and
+		 * Blue into the lut registers.
+		 * ToDo: Extend to max 7.0. Enable 32 bit input value
+		 * as compared to just 16 to achieve this.
+		 */
+		intel_de_write_fw(dev_priv, PRE_CSC_GAMC_DATA(pipe),
+				  lut[i].green);
+	}
+
+	/* Clamp values > 1.0. */
+	while (i++ < glk_degamma_lut_size(dev_priv))
+		intel_de_write_fw(dev_priv, PRE_CSC_GAMC_DATA(pipe), 1 << 16);
+
+	intel_de_write_fw(dev_priv, PRE_CSC_GAMC_INDEX(pipe), 0);
+}
+
+static void glk_load_degamma_lut_linear(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+	int i, lut_size = INTEL_INFO(dev_priv)->display.color.degamma_lut_size;
+
+	/*
+	 * When setting the auto-increment bit, the hardware seems to
+	 * ignore the index bits, so we need to reset it to index 0
+	 * separately.
+	 */
+	intel_de_write_fw(dev_priv, PRE_CSC_GAMC_INDEX(pipe), 0);
+	intel_de_write_fw(dev_priv, PRE_CSC_GAMC_INDEX(pipe),
+			  PRE_CSC_GAMC_AUTO_INCREMENT);
+
+	for (i = 0; i < lut_size; i++) {
+		u32 v = (i << 16) / (lut_size - 1);
+
+		intel_de_write_fw(dev_priv, PRE_CSC_GAMC_DATA(pipe), v);
+	}
+
+	/* Clamp values > 1.0. */
+	while (i++ < 35)
+		intel_de_write_fw(dev_priv, PRE_CSC_GAMC_DATA(pipe), 1 << 16);
+
+	intel_de_write_fw(dev_priv, PRE_CSC_GAMC_INDEX(pipe), 0);
+}
+
+static void glk_load_luts(const struct intel_crtc_state *crtc_state)
+{
+	const struct drm_property_blob *gamma_lut = crtc_state->hw.gamma_lut;
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+
+	/*
+	 * On GLK+ both pipe CSC and degamma LUT are controlled
+	 * by csc_enable. Hence for the cases where the CSC is
+	 * needed but degamma LUT is not we need to load a
+	 * linear degamma LUT. In fact we'll just always load
+	 * the degama LUT so that we don't have to reload
+	 * it every time the pipe CSC is being enabled.
+	 */
+	if (crtc_state->hw.degamma_lut)
+		glk_load_degamma_lut(crtc_state);
+	else
+		glk_load_degamma_lut_linear(crtc_state);
+
+	switch (crtc_state->gamma_mode) {
+	case GAMMA_MODE_MODE_8BIT:
+		ilk_load_lut_8(crtc, gamma_lut);
+		break;
+	case GAMMA_MODE_MODE_10BIT:
+		bdw_load_lut_10(crtc, gamma_lut, PAL_PREC_INDEX_VALUE(0));
+		ivb_load_lut_ext_max(crtc_state);
+		break;
+	default:
+		MISSING_CASE(crtc_state->gamma_mode);
+		break;
+	}
+}
+
+/* ilk+ "12.4" interpolated format (high 10 bits) */
+static u32 ilk_lut_12p4_udw(const struct drm_color_lut *color)
+{
+	return (color->red >> 6) << 20 | (color->green >> 6) << 10 |
+		(color->blue >> 6);
+}
+
+/* ilk+ "12.4" interpolated format (low 6 bits) */
+static u32 ilk_lut_12p4_ldw(const struct drm_color_lut *color)
+{
+	return (color->red & 0x3f) << 24 | (color->green & 0x3f) << 14 |
+		(color->blue & 0x3f) << 4;
+}
+
+static void
+icl_load_gcmax(const struct intel_crtc_state *crtc_state,
+	       const struct drm_color_lut *color)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	enum pipe pipe = crtc->pipe;
+
+	/* FIXME LUT entries are 16 bit only, so we can prog 0xFFFF max */
+	intel_dsb_reg_write(crtc_state, PREC_PAL_GC_MAX(pipe, 0), color->red);
+	intel_dsb_reg_write(crtc_state, PREC_PAL_GC_MAX(pipe, 1), color->green);
+	intel_dsb_reg_write(crtc_state, PREC_PAL_GC_MAX(pipe, 2), color->blue);
+}
+
+static void
+icl_program_gamma_superfine_segment(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	const struct drm_property_blob *blob = crtc_state->hw.gamma_lut;
+	const struct drm_color_lut *lut = blob->data;
+	enum pipe pipe = crtc->pipe;
+	int i;
+
+	/*
+	 * Program Super Fine segment (let's call it seg1)...
+	 *
+	 * Super Fine segment's step is 1/(8 * 128 * 256) and it has
+	 * 9 entries, corresponding to values 0, 1/(8 * 128 * 256),
+	 * 2/(8 * 128 * 256) ... 8/(8 * 128 * 256).
+	 */
+	intel_dsb_reg_write(crtc_state, PREC_PAL_MULTI_SEG_INDEX(pipe),
+			    PAL_PREC_AUTO_INCREMENT);
+
+	for (i = 0; i < 9; i++) {
+		const struct drm_color_lut *entry = &lut[i];
+
+		intel_dsb_indexed_reg_write(crtc_state, PREC_PAL_MULTI_SEG_DATA(pipe),
+					    ilk_lut_12p4_ldw(entry));
+		intel_dsb_indexed_reg_write(crtc_state, PREC_PAL_MULTI_SEG_DATA(pipe),
+					    ilk_lut_12p4_udw(entry));
+	}
+}
+
+static void
+icl_program_gamma_multi_segment(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	const struct drm_property_blob *blob = crtc_state->hw.gamma_lut;
+	const struct drm_color_lut *lut = blob->data;
+	const struct drm_color_lut *entry;
+	enum pipe pipe = crtc->pipe;
+	int i;
+
+	/*
+	 * Program Fine segment (let's call it seg2)...
+	 *
+	 * Fine segment's step is 1/(128 * 256) i.e. 1/(128 * 256), 2/(128 * 256)
+	 * ... 256/(128 * 256). So in order to program fine segment of LUT we
+	 * need to pick every 8th entry in the LUT, and program 256 indexes.
+	 *
+	 * PAL_PREC_INDEX[0] and PAL_PREC_INDEX[1] map to seg2[1],
+	 * seg2[0] being unused by the hardware.
+	 */
+	intel_dsb_reg_write(crtc_state, PREC_PAL_INDEX(pipe),
+			    PAL_PREC_AUTO_INCREMENT);
+	for (i = 1; i < 257; i++) {
+		entry = &lut[i * 8];
+		intel_dsb_indexed_reg_write(crtc_state, PREC_PAL_DATA(pipe),
+					    ilk_lut_12p4_ldw(entry));
+		intel_dsb_indexed_reg_write(crtc_state, PREC_PAL_DATA(pipe),
+					    ilk_lut_12p4_udw(entry));
+	}
+
+	/*
+	 * Program Coarse segment (let's call it seg3)...
+	 *
+	 * Coarse segment starts from index 0 and it's step is 1/256 ie 0,
+	 * 1/256, 2/256 ... 256/256. As per the description of each entry in LUT
+	 * above, we need to pick every (8 * 128)th entry in LUT, and
+	 * program 256 of those.
+	 *
+	 * Spec is not very clear about if entries seg3[0] and seg3[1] are
+	 * being used or not, but we still need to program these to advance
+	 * the index.
+	 */
+	for (i = 0; i < 256; i++) {
+		entry = &lut[i * 8 * 128];
+		intel_dsb_indexed_reg_write(crtc_state, PREC_PAL_DATA(pipe),
+					    ilk_lut_12p4_ldw(entry));
+		intel_dsb_indexed_reg_write(crtc_state, PREC_PAL_DATA(pipe),
+					    ilk_lut_12p4_udw(entry));
+	}
+
+	/* The last entry in the LUT is to be programmed in GCMAX */
+	entry = &lut[256 * 8 * 128];
+	icl_load_gcmax(crtc_state, entry);
+	ivb_load_lut_ext_max(crtc_state);
+}
+
+static void icl_load_luts(const struct intel_crtc_state *crtc_state)
+{
+	const struct drm_property_blob *gamma_lut = crtc_state->hw.gamma_lut;
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+
+	if (crtc_state->hw.degamma_lut)
+		glk_load_degamma_lut(crtc_state);
+
+	switch (crtc_state->gamma_mode & GAMMA_MODE_MODE_MASK) {
+	case GAMMA_MODE_MODE_8BIT:
+		ilk_load_lut_8(crtc, gamma_lut);
+		break;
+	case GAMMA_MODE_MODE_12BIT_MULTI_SEGMENTED:
+		icl_program_gamma_superfine_segment(crtc_state);
+		icl_program_gamma_multi_segment(crtc_state);
+		break;
+	case GAMMA_MODE_MODE_10BIT:
+		bdw_load_lut_10(crtc, gamma_lut, PAL_PREC_INDEX_VALUE(0));
+		ivb_load_lut_ext_max(crtc_state);
+		break;
+	default:
+		MISSING_CASE(crtc_state->gamma_mode);
+		break;
+	}
+
+	intel_dsb_commit(crtc_state);
+}
+
+static u32 chv_cgm_degamma_ldw(const struct drm_color_lut *color)
+{
+	return drm_color_lut_extract(color->green, 14) << 16 |
+		drm_color_lut_extract(color->blue, 14);
+}
+
+static u32 chv_cgm_degamma_udw(const struct drm_color_lut *color)
+{
+	return drm_color_lut_extract(color->red, 14);
+}
+
+static void chv_load_cgm_degamma(struct intel_crtc *crtc,
+				 const struct drm_property_blob *blob)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	const struct drm_color_lut *lut = blob->data;
+	int i, lut_size = drm_color_lut_size(blob);
+	enum pipe pipe = crtc->pipe;
+
+	for (i = 0; i < lut_size; i++) {
+		intel_de_write_fw(dev_priv, CGM_PIPE_DEGAMMA(pipe, i, 0),
+				  chv_cgm_degamma_ldw(&lut[i]));
+		intel_de_write_fw(dev_priv, CGM_PIPE_DEGAMMA(pipe, i, 1),
+				  chv_cgm_degamma_udw(&lut[i]));
+	}
+}
+
+static u32 chv_cgm_gamma_ldw(const struct drm_color_lut *color)
+{
+	return drm_color_lut_extract(color->green, 10) << 16 |
+		drm_color_lut_extract(color->blue, 10);
+}
+
+static u32 chv_cgm_gamma_udw(const struct drm_color_lut *color)
+{
+	return drm_color_lut_extract(color->red, 10);
+}
+
+static void chv_cgm_gamma_pack(struct drm_color_lut *entry, u32 ldw, u32 udw)
+{
+	entry->green = intel_color_lut_pack(REG_FIELD_GET(CGM_PIPE_GAMMA_GREEN_MASK, ldw), 10);
+	entry->blue = intel_color_lut_pack(REG_FIELD_GET(CGM_PIPE_GAMMA_BLUE_MASK, ldw), 10);
+	entry->red = intel_color_lut_pack(REG_FIELD_GET(CGM_PIPE_GAMMA_RED_MASK, udw), 10);
+}
+
+static void chv_load_cgm_gamma(struct intel_crtc *crtc,
+			       const struct drm_property_blob *blob)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	const struct drm_color_lut *lut = blob->data;
+	int i, lut_size = drm_color_lut_size(blob);
+	enum pipe pipe = crtc->pipe;
+
+	for (i = 0; i < lut_size; i++) {
+		intel_de_write_fw(dev_priv, CGM_PIPE_GAMMA(pipe, i, 0),
+				  chv_cgm_gamma_ldw(&lut[i]));
+		intel_de_write_fw(dev_priv, CGM_PIPE_GAMMA(pipe, i, 1),
+				  chv_cgm_gamma_udw(&lut[i]));
+	}
+}
+
+static void chv_load_luts(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	const struct drm_property_blob *degamma_lut = crtc_state->hw.degamma_lut;
+	const struct drm_property_blob *gamma_lut = crtc_state->hw.gamma_lut;
+	const struct drm_property_blob *ctm = crtc_state->hw.ctm;
+
+	if (crtc_state->cgm_mode & CGM_PIPE_MODE_CSC)
+		chv_load_cgm_csc(crtc, ctm);
+
+	if (crtc_state->cgm_mode & CGM_PIPE_MODE_DEGAMMA)
+		chv_load_cgm_degamma(crtc, degamma_lut);
+
+	if (crtc_state->cgm_mode & CGM_PIPE_MODE_GAMMA)
+		chv_load_cgm_gamma(crtc, gamma_lut);
+	else
+		i965_load_luts(crtc_state);
+
+	intel_de_write_fw(dev_priv, CGM_PIPE_MODE(crtc->pipe),
+			  crtc_state->cgm_mode);
+}
+
+void intel_color_load_luts(const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+
+	dev_priv->display.funcs.color->load_luts(crtc_state);
+}
+
+void intel_color_commit_noarm(const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+
+	if (dev_priv->display.funcs.color->color_commit_noarm)
+		dev_priv->display.funcs.color->color_commit_noarm(crtc_state);
+}
+
+void intel_color_commit_arm(const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+
+	dev_priv->display.funcs.color->color_commit_arm(crtc_state);
+}
+
+static bool intel_can_preload_luts(const struct intel_crtc_state *new_crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->uapi.crtc);
+	struct intel_atomic_state *state =
+		to_intel_atomic_state(new_crtc_state->uapi.state);
+	const struct intel_crtc_state *old_crtc_state =
+		intel_atomic_get_old_crtc_state(state, crtc);
+
+	return !old_crtc_state->hw.gamma_lut &&
+		!old_crtc_state->hw.degamma_lut;
+}
+
+static bool chv_can_preload_luts(const struct intel_crtc_state *new_crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->uapi.crtc);
+	struct intel_atomic_state *state =
+		to_intel_atomic_state(new_crtc_state->uapi.state);
+	const struct intel_crtc_state *old_crtc_state =
+		intel_atomic_get_old_crtc_state(state, crtc);
+
+	/*
+	 * CGM_PIPE_MODE is itself single buffered. We'd have to
+	 * somehow split it out from chv_load_luts() if we wanted
+	 * the ability to preload the CGM LUTs/CSC without tearing.
+	 */
+	if (old_crtc_state->cgm_mode || new_crtc_state->cgm_mode)
+		return false;
+
+	return !old_crtc_state->hw.gamma_lut;
+}
+
+static bool glk_can_preload_luts(const struct intel_crtc_state *new_crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->uapi.crtc);
+	struct intel_atomic_state *state =
+		to_intel_atomic_state(new_crtc_state->uapi.state);
+	const struct intel_crtc_state *old_crtc_state =
+		intel_atomic_get_old_crtc_state(state, crtc);
+
+	/*
+	 * The hardware degamma is active whenever the pipe
+	 * CSC is active. Thus even if the old state has no
+	 * software degamma we need to avoid clobbering the
+	 * linear hardware degamma mid scanout.
+	 */
+	return !old_crtc_state->csc_enable &&
+		!old_crtc_state->hw.gamma_lut;
+}
+
+int intel_color_check(struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+
+	return dev_priv->display.funcs.color->color_check(crtc_state);
+}
+
+void intel_color_get_config(struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+
+	if (dev_priv->display.funcs.color->read_luts)
+		dev_priv->display.funcs.color->read_luts(crtc_state);
+}
+
+static bool need_plane_update(struct intel_plane *plane,
+			      const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+
+	/*
+	 * On pre-SKL the pipe gamma enable and pipe csc enable for
+	 * the pipe bottom color are configured via the primary plane.
+	 * We have to reconfigure that even if the plane is inactive.
+	 */
+	return crtc_state->active_planes & BIT(plane->id) ||
+		(DISPLAY_VER(dev_priv) < 9 &&
+		 plane->id == PLANE_PRIMARY);
+}
+
+static int
+intel_color_add_affected_planes(struct intel_crtc_state *new_crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	struct intel_atomic_state *state =
+		to_intel_atomic_state(new_crtc_state->uapi.state);
+	const struct intel_crtc_state *old_crtc_state =
+		intel_atomic_get_old_crtc_state(state, crtc);
+	struct intel_plane *plane;
+
+	if (!new_crtc_state->hw.active ||
+	    drm_atomic_crtc_needs_modeset(&new_crtc_state->uapi))
+		return 0;
+
+	if (new_crtc_state->gamma_enable == old_crtc_state->gamma_enable &&
+	    new_crtc_state->csc_enable == old_crtc_state->csc_enable)
+		return 0;
+
+	for_each_intel_plane_on_crtc(&dev_priv->drm, crtc, plane) {
+		struct intel_plane_state *plane_state;
+
+		if (!need_plane_update(plane, new_crtc_state))
+			continue;
+
+		plane_state = intel_atomic_get_plane_state(state, plane);
+		if (IS_ERR(plane_state))
+			return PTR_ERR(plane_state);
+
+		new_crtc_state->update_planes |= BIT(plane->id);
+	}
+
+	return 0;
+}
+
+static int check_lut_size(const struct drm_property_blob *lut, int expected)
+{
+	int len;
+
+	if (!lut)
+		return 0;
+
+	len = drm_color_lut_size(lut);
+	if (len != expected) {
+		DRM_DEBUG_KMS("Invalid LUT size; got %d, expected %d\n",
+			      len, expected);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int check_luts(const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+	const struct drm_property_blob *gamma_lut = crtc_state->hw.gamma_lut;
+	const struct drm_property_blob *degamma_lut = crtc_state->hw.degamma_lut;
+	int gamma_length, degamma_length;
+	u32 gamma_tests, degamma_tests;
+
+	/* Always allow legacy gamma LUT with no further checking. */
+	if (crtc_state_is_legacy_gamma(crtc_state))
+		return 0;
+
+	/* C8 relies on its palette being stored in the legacy LUT */
+	if (crtc_state->c8_planes) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "C8 pixelformat requires the legacy LUT\n");
+		return -EINVAL;
+	}
+
+	degamma_length = INTEL_INFO(dev_priv)->display.color.degamma_lut_size;
+	gamma_length = INTEL_INFO(dev_priv)->display.color.gamma_lut_size;
+	degamma_tests = INTEL_INFO(dev_priv)->display.color.degamma_lut_tests;
+	gamma_tests = INTEL_INFO(dev_priv)->display.color.gamma_lut_tests;
+
+	if (check_lut_size(degamma_lut, degamma_length) ||
+	    check_lut_size(gamma_lut, gamma_length))
+		return -EINVAL;
+
+	if (drm_color_lut_check(degamma_lut, degamma_tests) ||
+	    drm_color_lut_check(gamma_lut, gamma_tests))
+		return -EINVAL;
+
+	return 0;
+}
+
+static u32 i9xx_gamma_mode(struct intel_crtc_state *crtc_state)
+{
+	if (!crtc_state->gamma_enable ||
+	    crtc_state_is_legacy_gamma(crtc_state))
+		return GAMMA_MODE_MODE_8BIT;
+	else
+		return GAMMA_MODE_MODE_10BIT; /* i965+ only */
+}
+
+static int i9xx_color_check(struct intel_crtc_state *crtc_state)
+{
+	int ret;
+
+	ret = check_luts(crtc_state);
+	if (ret)
+		return ret;
+
+	crtc_state->gamma_enable =
+		crtc_state->hw.gamma_lut &&
+		!crtc_state->c8_planes;
+
+	crtc_state->gamma_mode = i9xx_gamma_mode(crtc_state);
+
+	ret = intel_color_add_affected_planes(crtc_state);
+	if (ret)
+		return ret;
+
+	crtc_state->preload_luts = intel_can_preload_luts(crtc_state);
+
+	return 0;
+}
+
+static u32 chv_cgm_mode(const struct intel_crtc_state *crtc_state)
+{
+	u32 cgm_mode = 0;
+
+	if (crtc_state_is_legacy_gamma(crtc_state))
+		return 0;
+
+	if (crtc_state->hw.degamma_lut)
+		cgm_mode |= CGM_PIPE_MODE_DEGAMMA;
+	if (crtc_state->hw.ctm)
+		cgm_mode |= CGM_PIPE_MODE_CSC;
+	if (crtc_state->hw.gamma_lut)
+		cgm_mode |= CGM_PIPE_MODE_GAMMA;
+
+	return cgm_mode;
+}
+
+/*
+ * CHV color pipeline:
+ * u0.10 -> CGM degamma -> u0.14 -> CGM csc -> u0.14 -> CGM gamma ->
+ * u0.10 -> WGC csc -> u0.10 -> pipe gamma -> u0.10
+ *
+ * We always bypass the WGC csc and use the CGM csc
+ * instead since it has degamma and better precision.
+ */
+static int chv_color_check(struct intel_crtc_state *crtc_state)
+{
+	int ret;
+
+	ret = check_luts(crtc_state);
+	if (ret)
+		return ret;
+
+	/*
+	 * Pipe gamma will be used only for the legacy LUT.
+	 * Otherwise we bypass it and use the CGM gamma instead.
+	 */
+	crtc_state->gamma_enable =
+		crtc_state_is_legacy_gamma(crtc_state) &&
+		!crtc_state->c8_planes;
+
+	crtc_state->gamma_mode = GAMMA_MODE_MODE_8BIT;
+
+	crtc_state->cgm_mode = chv_cgm_mode(crtc_state);
+
+	ret = intel_color_add_affected_planes(crtc_state);
+	if (ret)
+		return ret;
+
+	crtc_state->preload_luts = chv_can_preload_luts(crtc_state);
+
+	return 0;
+}
+
+static u32 ilk_gamma_mode(const struct intel_crtc_state *crtc_state)
+{
+	if (!crtc_state->gamma_enable ||
+	    crtc_state_is_legacy_gamma(crtc_state))
+		return GAMMA_MODE_MODE_8BIT;
+	else
+		return GAMMA_MODE_MODE_10BIT;
+}
+
+static u32 ilk_csc_mode(const struct intel_crtc_state *crtc_state)
+{
+	/*
+	 * CSC comes after the LUT in RGB->YCbCr mode.
+	 * RGB->YCbCr needs the limited range offsets added to
+	 * the output. RGB limited range output is handled by
+	 * the hw automagically elsewhere.
+	 */
+	if (crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB)
+		return CSC_BLACK_SCREEN_OFFSET;
+
+	return CSC_MODE_YUV_TO_RGB |
+		CSC_POSITION_BEFORE_GAMMA;
+}
+
+static int ilk_color_check(struct intel_crtc_state *crtc_state)
+{
+	int ret;
+
+	ret = check_luts(crtc_state);
+	if (ret)
+		return ret;
+
+	crtc_state->gamma_enable =
+		crtc_state->hw.gamma_lut &&
+		!crtc_state->c8_planes;
+
+	/*
+	 * We don't expose the ctm on ilk/snb currently, also RGB
+	 * limited range output is handled by the hw automagically.
+	 */
+	crtc_state->csc_enable =
+		crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB;
+
+	crtc_state->gamma_mode = ilk_gamma_mode(crtc_state);
+
+	crtc_state->csc_mode = ilk_csc_mode(crtc_state);
+
+	ret = intel_color_add_affected_planes(crtc_state);
+	if (ret)
+		return ret;
+
+	crtc_state->preload_luts = intel_can_preload_luts(crtc_state);
+
+	return 0;
+}
+
+static u32 ivb_gamma_mode(const struct intel_crtc_state *crtc_state)
+{
+	if (!crtc_state->gamma_enable ||
+	    crtc_state_is_legacy_gamma(crtc_state))
+		return GAMMA_MODE_MODE_8BIT;
+	else if (crtc_state->hw.gamma_lut &&
+		 crtc_state->hw.degamma_lut)
+		return GAMMA_MODE_MODE_SPLIT;
+	else
+		return GAMMA_MODE_MODE_10BIT;
+}
+
+static u32 ivb_csc_mode(const struct intel_crtc_state *crtc_state)
+{
+	bool limited_color_range = ilk_csc_limited_range(crtc_state);
+
+	/*
+	 * CSC comes after the LUT in degamma, RGB->YCbCr,
+	 * and RGB full->limited range mode.
+	 */
+	if (crtc_state->hw.degamma_lut ||
+	    crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB ||
+	    limited_color_range)
+		return 0;
+
+	return CSC_POSITION_BEFORE_GAMMA;
+}
+
+static int ivb_color_check(struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+	bool limited_color_range = ilk_csc_limited_range(crtc_state);
+	int ret;
+
+	ret = check_luts(crtc_state);
+	if (ret)
+		return ret;
+
+	if (crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB &&
+	    crtc_state->hw.ctm) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "YCBCR and CTM together are not possible\n");
+		return -EINVAL;
+	}
+
+	crtc_state->gamma_enable =
+		(crtc_state->hw.gamma_lut ||
+		 crtc_state->hw.degamma_lut) &&
+		!crtc_state->c8_planes;
+
+	crtc_state->csc_enable =
+		crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB ||
+		crtc_state->hw.ctm || limited_color_range;
+
+	crtc_state->gamma_mode = ivb_gamma_mode(crtc_state);
+
+	crtc_state->csc_mode = ivb_csc_mode(crtc_state);
+
+	ret = intel_color_add_affected_planes(crtc_state);
+	if (ret)
+		return ret;
+
+	crtc_state->preload_luts = intel_can_preload_luts(crtc_state);
+
+	return 0;
+}
+
+static u32 glk_gamma_mode(const struct intel_crtc_state *crtc_state)
+{
+	if (!crtc_state->gamma_enable ||
+	    crtc_state_is_legacy_gamma(crtc_state))
+		return GAMMA_MODE_MODE_8BIT;
+	else
+		return GAMMA_MODE_MODE_10BIT;
+}
+
+static int glk_color_check(struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+	int ret;
+
+	ret = check_luts(crtc_state);
+	if (ret)
+		return ret;
+
+	if (crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB &&
+	    crtc_state->hw.ctm) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "YCBCR and CTM together are not possible\n");
+		return -EINVAL;
+	}
+
+	crtc_state->gamma_enable =
+		crtc_state->hw.gamma_lut &&
+		!crtc_state->c8_planes;
+
+	/* On GLK+ degamma LUT is controlled by csc_enable */
+	crtc_state->csc_enable =
+		crtc_state->hw.degamma_lut ||
+		crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB ||
+		crtc_state->hw.ctm || crtc_state->limited_color_range;
+
+	crtc_state->gamma_mode = glk_gamma_mode(crtc_state);
+
+	crtc_state->csc_mode = 0;
+
+	ret = intel_color_add_affected_planes(crtc_state);
+	if (ret)
+		return ret;
+
+	crtc_state->preload_luts = glk_can_preload_luts(crtc_state);
+
+	return 0;
+}
+
+static u32 icl_gamma_mode(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	u32 gamma_mode = 0;
+
+	if (crtc_state->hw.degamma_lut)
+		gamma_mode |= PRE_CSC_GAMMA_ENABLE;
+
+	if (crtc_state->hw.gamma_lut &&
+	    !crtc_state->c8_planes)
+		gamma_mode |= POST_CSC_GAMMA_ENABLE;
+
+	if (!crtc_state->hw.gamma_lut ||
+	    crtc_state_is_legacy_gamma(crtc_state))
+		gamma_mode |= GAMMA_MODE_MODE_8BIT;
+	/*
+	 * Enable 10bit gamma for D13
+	 * ToDo: Extend to Logarithmic Gamma once the new UAPI
+	 * is accepted and implemented by a userspace consumer
+	 */
+	else if (DISPLAY_VER(i915) >= 13)
+		gamma_mode |= GAMMA_MODE_MODE_10BIT;
+	else
+		gamma_mode |= GAMMA_MODE_MODE_12BIT_MULTI_SEGMENTED;
+
+	return gamma_mode;
+}
+
+static u32 icl_csc_mode(const struct intel_crtc_state *crtc_state)
+{
+	u32 csc_mode = 0;
+
+	if (crtc_state->hw.ctm)
+		csc_mode |= ICL_CSC_ENABLE;
+
+	if (crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB ||
+	    crtc_state->limited_color_range)
+		csc_mode |= ICL_OUTPUT_CSC_ENABLE;
+
+	return csc_mode;
+}
+
+static int icl_color_check(struct intel_crtc_state *crtc_state)
+{
+	int ret;
+
+	ret = check_luts(crtc_state);
+	if (ret)
+		return ret;
+
+	crtc_state->gamma_mode = icl_gamma_mode(crtc_state);
+
+	crtc_state->csc_mode = icl_csc_mode(crtc_state);
+
+	crtc_state->preload_luts = intel_can_preload_luts(crtc_state);
+
+	return 0;
+}
+
+static int i9xx_gamma_precision(const struct intel_crtc_state *crtc_state)
+{
+	if (!crtc_state->gamma_enable)
+		return 0;
+
+	switch (crtc_state->gamma_mode) {
+	case GAMMA_MODE_MODE_8BIT:
+		return 8;
+	case GAMMA_MODE_MODE_10BIT:
+		return 16;
+	default:
+		MISSING_CASE(crtc_state->gamma_mode);
+		return 0;
+	}
+}
+
+static int ilk_gamma_precision(const struct intel_crtc_state *crtc_state)
+{
+	if (!crtc_state->gamma_enable)
+		return 0;
+
+	if ((crtc_state->csc_mode & CSC_POSITION_BEFORE_GAMMA) == 0)
+		return 0;
+
+	switch (crtc_state->gamma_mode) {
+	case GAMMA_MODE_MODE_8BIT:
+		return 8;
+	case GAMMA_MODE_MODE_10BIT:
+		return 10;
+	default:
+		MISSING_CASE(crtc_state->gamma_mode);
+		return 0;
+	}
+}
+
+static int chv_gamma_precision(const struct intel_crtc_state *crtc_state)
+{
+	if (crtc_state->cgm_mode & CGM_PIPE_MODE_GAMMA)
+		return 10;
+	else
+		return i9xx_gamma_precision(crtc_state);
+}
+
+static int glk_gamma_precision(const struct intel_crtc_state *crtc_state)
+{
+	if (!crtc_state->gamma_enable)
+		return 0;
+
+	switch (crtc_state->gamma_mode) {
+	case GAMMA_MODE_MODE_8BIT:
+		return 8;
+	case GAMMA_MODE_MODE_10BIT:
+		return 10;
+	default:
+		MISSING_CASE(crtc_state->gamma_mode);
+		return 0;
+	}
+}
+
+static int icl_gamma_precision(const struct intel_crtc_state *crtc_state)
+{
+	if ((crtc_state->gamma_mode & POST_CSC_GAMMA_ENABLE) == 0)
+		return 0;
+
+	switch (crtc_state->gamma_mode & GAMMA_MODE_MODE_MASK) {
+	case GAMMA_MODE_MODE_8BIT:
+		return 8;
+	case GAMMA_MODE_MODE_10BIT:
+		return 10;
+	case GAMMA_MODE_MODE_12BIT_MULTI_SEGMENTED:
+		return 16;
+	default:
+		MISSING_CASE(crtc_state->gamma_mode);
+		return 0;
+	}
+}
+
+int intel_color_get_gamma_bit_precision(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+
+	if (HAS_GMCH(dev_priv)) {
+		if (IS_CHERRYVIEW(dev_priv))
+			return chv_gamma_precision(crtc_state);
+		else
+			return i9xx_gamma_precision(crtc_state);
+	} else {
+		if (DISPLAY_VER(dev_priv) >= 11)
+			return icl_gamma_precision(crtc_state);
+		else if (DISPLAY_VER(dev_priv) == 10)
+			return glk_gamma_precision(crtc_state);
+		else if (IS_IRONLAKE(dev_priv))
+			return ilk_gamma_precision(crtc_state);
+	}
+
+	return 0;
+}
+
+static bool err_check(struct drm_color_lut *lut1,
+		      struct drm_color_lut *lut2, u32 err)
+{
+	return ((abs((long)lut2->red - lut1->red)) <= err) &&
+		((abs((long)lut2->blue - lut1->blue)) <= err) &&
+		((abs((long)lut2->green - lut1->green)) <= err);
+}
+
+static bool intel_color_lut_entries_equal(struct drm_color_lut *lut1,
+					  struct drm_color_lut *lut2,
+					  int lut_size, u32 err)
+{
+	int i;
+
+	for (i = 0; i < lut_size; i++) {
+		if (!err_check(&lut1[i], &lut2[i], err))
+			return false;
+	}
+
+	return true;
+}
+
+bool intel_color_lut_equal(struct drm_property_blob *blob1,
+			   struct drm_property_blob *blob2,
+			   u32 gamma_mode, u32 bit_precision)
+{
+	struct drm_color_lut *lut1, *lut2;
+	int lut_size1, lut_size2;
+	u32 err;
+
+	if (!blob1 != !blob2)
+		return false;
+
+	if (!blob1)
+		return true;
+
+	lut_size1 = drm_color_lut_size(blob1);
+	lut_size2 = drm_color_lut_size(blob2);
+
+	/* check sw and hw lut size */
+	if (lut_size1 != lut_size2)
+		return false;
+
+	lut1 = blob1->data;
+	lut2 = blob2->data;
+
+	err = 0xffff >> bit_precision;
+
+	/* check sw and hw lut entry to be equal */
+	switch (gamma_mode & GAMMA_MODE_MODE_MASK) {
+	case GAMMA_MODE_MODE_8BIT:
+	case GAMMA_MODE_MODE_10BIT:
+		if (!intel_color_lut_entries_equal(lut1, lut2,
+						   lut_size2, err))
+			return false;
+		break;
+	case GAMMA_MODE_MODE_12BIT_MULTI_SEGMENTED:
+		if (!intel_color_lut_entries_equal(lut1, lut2,
+						   9, err))
+			return false;
+		break;
+	default:
+		MISSING_CASE(gamma_mode);
+		return false;
+	}
+
+	return true;
+}
+
+static struct drm_property_blob *i9xx_read_lut_8(struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+	struct drm_property_blob *blob;
+	struct drm_color_lut *lut;
+	int i;
+
+	blob = drm_property_create_blob(&dev_priv->drm,
+					sizeof(struct drm_color_lut) * LEGACY_LUT_LENGTH,
+					NULL);
+	if (IS_ERR(blob))
+		return NULL;
+
+	lut = blob->data;
+
+	for (i = 0; i < LEGACY_LUT_LENGTH; i++) {
+		u32 val = intel_de_read_fw(dev_priv, PALETTE(pipe, i));
+
+		i9xx_lut_8_pack(&lut[i], val);
+	}
+
+	return blob;
+}
+
+static void i9xx_read_luts(struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+
+	if (!crtc_state->gamma_enable)
+		return;
+
+	crtc_state->hw.gamma_lut = i9xx_read_lut_8(crtc);
+}
+
+static struct drm_property_blob *i965_read_lut_10p6(struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	int i, lut_size = INTEL_INFO(dev_priv)->display.color.gamma_lut_size;
+	enum pipe pipe = crtc->pipe;
+	struct drm_property_blob *blob;
+	struct drm_color_lut *lut;
+
+	blob = drm_property_create_blob(&dev_priv->drm,
+					sizeof(struct drm_color_lut) * lut_size,
+					NULL);
+	if (IS_ERR(blob))
+		return NULL;
+
+	lut = blob->data;
+
+	for (i = 0; i < lut_size - 1; i++) {
+		u32 ldw = intel_de_read_fw(dev_priv, PALETTE(pipe, 2 * i + 0));
+		u32 udw = intel_de_read_fw(dev_priv, PALETTE(pipe, 2 * i + 1));
+
+		i965_lut_10p6_pack(&lut[i], ldw, udw);
+	}
+
+	lut[i].red = i965_lut_11p6_max_pack(intel_de_read_fw(dev_priv, PIPEGCMAX(pipe, 0)));
+	lut[i].green = i965_lut_11p6_max_pack(intel_de_read_fw(dev_priv, PIPEGCMAX(pipe, 1)));
+	lut[i].blue = i965_lut_11p6_max_pack(intel_de_read_fw(dev_priv, PIPEGCMAX(pipe, 2)));
+
+	return blob;
+}
+
+static void i965_read_luts(struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+
+	if (!crtc_state->gamma_enable)
+		return;
+
+	if (crtc_state->gamma_mode == GAMMA_MODE_MODE_8BIT)
+		crtc_state->hw.gamma_lut = i9xx_read_lut_8(crtc);
+	else
+		crtc_state->hw.gamma_lut = i965_read_lut_10p6(crtc);
+}
+
+static struct drm_property_blob *chv_read_cgm_gamma(struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	int i, lut_size = INTEL_INFO(dev_priv)->display.color.gamma_lut_size;
+	enum pipe pipe = crtc->pipe;
+	struct drm_property_blob *blob;
+	struct drm_color_lut *lut;
+
+	blob = drm_property_create_blob(&dev_priv->drm,
+					sizeof(struct drm_color_lut) * lut_size,
+					NULL);
+	if (IS_ERR(blob))
+		return NULL;
+
+	lut = blob->data;
+
+	for (i = 0; i < lut_size; i++) {
+		u32 ldw = intel_de_read_fw(dev_priv, CGM_PIPE_GAMMA(pipe, i, 0));
+		u32 udw = intel_de_read_fw(dev_priv, CGM_PIPE_GAMMA(pipe, i, 1));
+
+		chv_cgm_gamma_pack(&lut[i], ldw, udw);
+	}
+
+	return blob;
+}
+
+static void chv_read_luts(struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+
+	if (crtc_state->cgm_mode & CGM_PIPE_MODE_GAMMA)
+		crtc_state->hw.gamma_lut = chv_read_cgm_gamma(crtc);
+	else
+		i965_read_luts(crtc_state);
+}
+
+static struct drm_property_blob *ilk_read_lut_8(struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+	struct drm_property_blob *blob;
+	struct drm_color_lut *lut;
+	int i;
+
+	blob = drm_property_create_blob(&dev_priv->drm,
+					sizeof(struct drm_color_lut) * LEGACY_LUT_LENGTH,
+					NULL);
+	if (IS_ERR(blob))
+		return NULL;
+
+	lut = blob->data;
+
+	for (i = 0; i < LEGACY_LUT_LENGTH; i++) {
+		u32 val = intel_de_read_fw(dev_priv, LGC_PALETTE(pipe, i));
+
+		i9xx_lut_8_pack(&lut[i], val);
+	}
+
+	return blob;
+}
+
+static struct drm_property_blob *ilk_read_lut_10(struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	int i, lut_size = INTEL_INFO(dev_priv)->display.color.gamma_lut_size;
+	enum pipe pipe = crtc->pipe;
+	struct drm_property_blob *blob;
+	struct drm_color_lut *lut;
+
+	blob = drm_property_create_blob(&dev_priv->drm,
+					sizeof(struct drm_color_lut) * lut_size,
+					NULL);
+	if (IS_ERR(blob))
+		return NULL;
+
+	lut = blob->data;
+
+	for (i = 0; i < lut_size; i++) {
+		u32 val = intel_de_read_fw(dev_priv, PREC_PALETTE(pipe, i));
+
+		ilk_lut_10_pack(&lut[i], val);
+	}
+
+	return blob;
+}
+
+static void ilk_read_luts(struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+
+	if (!crtc_state->gamma_enable)
+		return;
+
+	if ((crtc_state->csc_mode & CSC_POSITION_BEFORE_GAMMA) == 0)
+		return;
+
+	switch (crtc_state->gamma_mode) {
+	case GAMMA_MODE_MODE_8BIT:
+		crtc_state->hw.gamma_lut = ilk_read_lut_8(crtc);
+		break;
+	case GAMMA_MODE_MODE_10BIT:
+		crtc_state->hw.gamma_lut = ilk_read_lut_10(crtc);
+		break;
+	default:
+		MISSING_CASE(crtc_state->gamma_mode);
+		break;
+	}
+}
+
+/* On BDW+ the index auto increment mode actually works */
+static struct drm_property_blob *bdw_read_lut_10(struct intel_crtc *crtc,
+						 u32 prec_index)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	int i, hw_lut_size = ivb_lut_10_size(prec_index);
+	int lut_size = INTEL_INFO(dev_priv)->display.color.gamma_lut_size;
+	enum pipe pipe = crtc->pipe;
+	struct drm_property_blob *blob;
+	struct drm_color_lut *lut;
+
+	drm_WARN_ON(&dev_priv->drm, lut_size != hw_lut_size);
+
+	blob = drm_property_create_blob(&dev_priv->drm,
+					sizeof(struct drm_color_lut) * lut_size,
+					NULL);
+	if (IS_ERR(blob))
+		return NULL;
+
+	lut = blob->data;
+
+	intel_de_write_fw(dev_priv, PREC_PAL_INDEX(pipe),
+			  prec_index | PAL_PREC_AUTO_INCREMENT);
+
+	for (i = 0; i < lut_size; i++) {
+		u32 val = intel_de_read_fw(dev_priv, PREC_PAL_DATA(pipe));
+
+		ilk_lut_10_pack(&lut[i], val);
+	}
+
+	intel_de_write_fw(dev_priv, PREC_PAL_INDEX(pipe), 0);
+
+	return blob;
+}
+
+static void glk_read_luts(struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+
+	if (!crtc_state->gamma_enable)
+		return;
+
+	switch (crtc_state->gamma_mode) {
+	case GAMMA_MODE_MODE_8BIT:
+		crtc_state->hw.gamma_lut = ilk_read_lut_8(crtc);
+		break;
+	case GAMMA_MODE_MODE_10BIT:
+		crtc_state->hw.gamma_lut = bdw_read_lut_10(crtc, PAL_PREC_INDEX_VALUE(0));
+		break;
+	default:
+		MISSING_CASE(crtc_state->gamma_mode);
+		break;
+	}
+}
+
+static void icl_color_commit_arm(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+
+	/*
+	 * We don't (yet) allow userspace to control the pipe background color,
+	 * so force it to black.
+	 */
+	intel_de_write(i915, SKL_BOTTOM_COLOR(pipe), 0);
+
+	intel_de_write(i915, GAMMA_MODE(crtc->pipe),
+		       crtc_state->gamma_mode);
+
+	intel_de_write_fw(i915, PIPE_CSC_MODE(crtc->pipe),
+			  crtc_state->csc_mode);
+}
+
+static struct drm_property_blob *
+icl_read_lut_multi_segment(struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	int i, lut_size = INTEL_INFO(dev_priv)->display.color.gamma_lut_size;
+	enum pipe pipe = crtc->pipe;
+	struct drm_property_blob *blob;
+	struct drm_color_lut *lut;
+
+	blob = drm_property_create_blob(&dev_priv->drm,
+					sizeof(struct drm_color_lut) * lut_size,
+					NULL);
+	if (IS_ERR(blob))
+		return NULL;
+
+	lut = blob->data;
+
+	intel_de_write_fw(dev_priv, PREC_PAL_MULTI_SEG_INDEX(pipe),
+			  PAL_PREC_AUTO_INCREMENT);
+
+	for (i = 0; i < 9; i++) {
+		u32 ldw = intel_de_read_fw(dev_priv, PREC_PAL_MULTI_SEG_DATA(pipe));
+		u32 udw = intel_de_read_fw(dev_priv, PREC_PAL_MULTI_SEG_DATA(pipe));
+
+		icl_lut_multi_seg_pack(&lut[i], ldw, udw);
+	}
+
+	intel_de_write_fw(dev_priv, PREC_PAL_MULTI_SEG_INDEX(pipe), 0);
+
+	/*
+	 * FIXME readouts from PAL_PREC_DATA register aren't giving
+	 * correct values in the case of fine and coarse segments.
+	 * Restricting readouts only for super fine segment as of now.
+	 */
+
+	return blob;
+}
+
+static void icl_read_luts(struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+
+	if ((crtc_state->gamma_mode & POST_CSC_GAMMA_ENABLE) == 0)
+		return;
+
+	switch (crtc_state->gamma_mode & GAMMA_MODE_MODE_MASK) {
+	case GAMMA_MODE_MODE_8BIT:
+		crtc_state->hw.gamma_lut = ilk_read_lut_8(crtc);
+		break;
+	case GAMMA_MODE_MODE_10BIT:
+		crtc_state->hw.gamma_lut = bdw_read_lut_10(crtc, PAL_PREC_INDEX_VALUE(0));
+		break;
+	case GAMMA_MODE_MODE_12BIT_MULTI_SEGMENTED:
+		crtc_state->hw.gamma_lut = icl_read_lut_multi_segment(crtc);
+		break;
+	default:
+		MISSING_CASE(crtc_state->gamma_mode);
+		break;
+	}
+}
+
+static const struct intel_color_funcs chv_color_funcs = {
+	.color_check = chv_color_check,
+	.color_commit_arm = i9xx_color_commit_arm,
+	.load_luts = chv_load_luts,
+	.read_luts = chv_read_luts,
+};
+
+static const struct intel_color_funcs i965_color_funcs = {
+	.color_check = i9xx_color_check,
+	.color_commit_arm = i9xx_color_commit_arm,
+	.load_luts = i965_load_luts,
+	.read_luts = i965_read_luts,
+};
+
+static const struct intel_color_funcs i9xx_color_funcs = {
+	.color_check = i9xx_color_check,
+	.color_commit_arm = i9xx_color_commit_arm,
+	.load_luts = i9xx_load_luts,
+	.read_luts = i9xx_read_luts,
+};
+
+static const struct intel_color_funcs icl_color_funcs = {
+	.color_check = icl_color_check,
+	.color_commit_noarm = icl_color_commit_noarm,
+	.color_commit_arm = icl_color_commit_arm,
+	.load_luts = icl_load_luts,
+	.read_luts = icl_read_luts,
+};
+
+static const struct intel_color_funcs glk_color_funcs = {
+	.color_check = glk_color_check,
+	.color_commit_noarm = skl_color_commit_noarm,
+	.color_commit_arm = skl_color_commit_arm,
+	.load_luts = glk_load_luts,
+	.read_luts = glk_read_luts,
+};
+
+static const struct intel_color_funcs skl_color_funcs = {
+	.color_check = ivb_color_check,
+	.color_commit_noarm = skl_color_commit_noarm,
+	.color_commit_arm = skl_color_commit_arm,
+	.load_luts = bdw_load_luts,
+	.read_luts = NULL,
+};
+
+static const struct intel_color_funcs bdw_color_funcs = {
+	.color_check = ivb_color_check,
+	.color_commit_noarm = ilk_color_commit_noarm,
+	.color_commit_arm = hsw_color_commit_arm,
+	.load_luts = bdw_load_luts,
+	.read_luts = NULL,
+};
+
+static const struct intel_color_funcs hsw_color_funcs = {
+	.color_check = ivb_color_check,
+	.color_commit_noarm = ilk_color_commit_noarm,
+	.color_commit_arm = hsw_color_commit_arm,
+	.load_luts = ivb_load_luts,
+	.read_luts = NULL,
+};
+
+static const struct intel_color_funcs ivb_color_funcs = {
+	.color_check = ivb_color_check,
+	.color_commit_noarm = ilk_color_commit_noarm,
+	.color_commit_arm = ilk_color_commit_arm,
+	.load_luts = ivb_load_luts,
+	.read_luts = NULL,
+};
+
+static const struct intel_color_funcs ilk_color_funcs = {
+	.color_check = ilk_color_check,
+	.color_commit_noarm = ilk_color_commit_noarm,
+	.color_commit_arm = ilk_color_commit_arm,
+	.load_luts = ilk_load_luts,
+	.read_luts = ilk_read_luts,
+};
+
+void intel_color_init(struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	bool has_ctm = INTEL_INFO(dev_priv)->display.color.degamma_lut_size != 0;
+
+	drm_mode_crtc_set_gamma_size(&crtc->base, 256);
+
+	if (HAS_GMCH(dev_priv)) {
+		if (IS_CHERRYVIEW(dev_priv)) {
+			dev_priv->display.funcs.color = &chv_color_funcs;
+		} else if (DISPLAY_VER(dev_priv) >= 4) {
+			dev_priv->display.funcs.color = &i965_color_funcs;
+		} else {
+			dev_priv->display.funcs.color = &i9xx_color_funcs;
+		}
+	} else {
+		if (DISPLAY_VER(dev_priv) >= 11)
+			dev_priv->display.funcs.color = &icl_color_funcs;
+		else if (DISPLAY_VER(dev_priv) == 10)
+			dev_priv->display.funcs.color = &glk_color_funcs;
+		else if (DISPLAY_VER(dev_priv) == 9)
+			dev_priv->display.funcs.color = &skl_color_funcs;
+		else if (DISPLAY_VER(dev_priv) == 8)
+			dev_priv->display.funcs.color = &bdw_color_funcs;
+		else if (DISPLAY_VER(dev_priv) == 7) {
+			if (IS_HASWELL(dev_priv))
+				dev_priv->display.funcs.color = &hsw_color_funcs;
+			else
+				dev_priv->display.funcs.color = &ivb_color_funcs;
+		} else
+			dev_priv->display.funcs.color = &ilk_color_funcs;
+	}
+
+	drm_crtc_enable_color_mgmt(&crtc->base,
+				   INTEL_INFO(dev_priv)->display.color.degamma_lut_size,
+				   has_ctm,
+				   INTEL_INFO(dev_priv)->display.color.gamma_lut_size);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_color.h b/drivers/gpu/drm/i915/display/intel_color.h
new file mode 100644
index 000000000..fd873425e
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_color.h
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_COLOR_H__
+#define __INTEL_COLOR_H__
+
+#include <linux/types.h>
+
+struct intel_crtc_state;
+struct intel_crtc;
+struct drm_property_blob;
+
+void intel_color_init(struct intel_crtc *crtc);
+int intel_color_check(struct intel_crtc_state *crtc_state);
+void intel_color_commit_noarm(const struct intel_crtc_state *crtc_state);
+void intel_color_commit_arm(const struct intel_crtc_state *crtc_state);
+void intel_color_load_luts(const struct intel_crtc_state *crtc_state);
+void intel_color_get_config(struct intel_crtc_state *crtc_state);
+int intel_color_get_gamma_bit_precision(const struct intel_crtc_state *crtc_state);
+bool intel_color_lut_equal(struct drm_property_blob *blob1,
+			   struct drm_property_blob *blob2,
+			   u32 gamma_mode, u32 bit_precision);
+
+#endif /* __INTEL_COLOR_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_combo_phy.c b/drivers/gpu/drm/i915/display/intel_combo_phy.c
new file mode 100644
index 000000000..64890f39c
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_combo_phy.c
@@ -0,0 +1,439 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2018 Intel Corporation
+ */
+
+#include "intel_combo_phy.h"
+#include "intel_combo_phy_regs.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+
+#define for_each_combo_phy(__dev_priv, __phy) \
+	for ((__phy) = PHY_A; (__phy) < I915_MAX_PHYS; (__phy)++)	\
+		for_each_if(intel_phy_is_combo(__dev_priv, __phy))
+
+#define for_each_combo_phy_reverse(__dev_priv, __phy) \
+	for ((__phy) = I915_MAX_PHYS; (__phy)-- > PHY_A;) \
+		for_each_if(intel_phy_is_combo(__dev_priv, __phy))
+
+enum {
+	PROCMON_0_85V_DOT_0,
+	PROCMON_0_95V_DOT_0,
+	PROCMON_0_95V_DOT_1,
+	PROCMON_1_05V_DOT_0,
+	PROCMON_1_05V_DOT_1,
+};
+
+static const struct icl_procmon {
+	const char *name;
+	u32 dw1, dw9, dw10;
+} icl_procmon_values[] = {
+	[PROCMON_0_85V_DOT_0] = {
+		.name = "0.85V dot0 (low-voltage)",
+		.dw1 = 0x00000000, .dw9 = 0x62AB67BB, .dw10 = 0x51914F96,
+	},
+	[PROCMON_0_95V_DOT_0] = {
+		.name = "0.95V dot0",
+		.dw1 = 0x00000000, .dw9 = 0x86E172C7, .dw10 = 0x77CA5EAB,
+	},
+	[PROCMON_0_95V_DOT_1] = {
+		.name = "0.95V dot1",
+		.dw1 = 0x00000000, .dw9 = 0x93F87FE1, .dw10 = 0x8AE871C5,
+	},
+	[PROCMON_1_05V_DOT_0] = {
+		.name = "1.05V dot0",
+		.dw1 = 0x00000000, .dw9 = 0x98FA82DD, .dw10 = 0x89E46DC1,
+	},
+	[PROCMON_1_05V_DOT_1] = {
+		.name = "1.05V dot1",
+		.dw1 = 0x00440000, .dw9 = 0x9A00AB25, .dw10 = 0x8AE38FF1,
+	},
+};
+
+static const struct icl_procmon *
+icl_get_procmon_ref_values(struct drm_i915_private *dev_priv, enum phy phy)
+{
+	const struct icl_procmon *procmon;
+	u32 val;
+
+	val = intel_de_read(dev_priv, ICL_PORT_COMP_DW3(phy));
+	switch (val & (PROCESS_INFO_MASK | VOLTAGE_INFO_MASK)) {
+	default:
+		MISSING_CASE(val);
+		fallthrough;
+	case VOLTAGE_INFO_0_85V | PROCESS_INFO_DOT_0:
+		procmon = &icl_procmon_values[PROCMON_0_85V_DOT_0];
+		break;
+	case VOLTAGE_INFO_0_95V | PROCESS_INFO_DOT_0:
+		procmon = &icl_procmon_values[PROCMON_0_95V_DOT_0];
+		break;
+	case VOLTAGE_INFO_0_95V | PROCESS_INFO_DOT_1:
+		procmon = &icl_procmon_values[PROCMON_0_95V_DOT_1];
+		break;
+	case VOLTAGE_INFO_1_05V | PROCESS_INFO_DOT_0:
+		procmon = &icl_procmon_values[PROCMON_1_05V_DOT_0];
+		break;
+	case VOLTAGE_INFO_1_05V | PROCESS_INFO_DOT_1:
+		procmon = &icl_procmon_values[PROCMON_1_05V_DOT_1];
+		break;
+	}
+
+	return procmon;
+}
+
+static void icl_set_procmon_ref_values(struct drm_i915_private *dev_priv,
+				       enum phy phy)
+{
+	const struct icl_procmon *procmon;
+	u32 val;
+
+	procmon = icl_get_procmon_ref_values(dev_priv, phy);
+
+	val = intel_de_read(dev_priv, ICL_PORT_COMP_DW1(phy));
+	val &= ~((0xff << 16) | 0xff);
+	val |= procmon->dw1;
+	intel_de_write(dev_priv, ICL_PORT_COMP_DW1(phy), val);
+
+	intel_de_write(dev_priv, ICL_PORT_COMP_DW9(phy), procmon->dw9);
+	intel_de_write(dev_priv, ICL_PORT_COMP_DW10(phy), procmon->dw10);
+}
+
+static bool check_phy_reg(struct drm_i915_private *dev_priv,
+			  enum phy phy, i915_reg_t reg, u32 mask,
+			  u32 expected_val)
+{
+	u32 val = intel_de_read(dev_priv, reg);
+
+	if ((val & mask) != expected_val) {
+		drm_dbg(&dev_priv->drm,
+			"Combo PHY %c reg %08x state mismatch: "
+			"current %08x mask %08x expected %08x\n",
+			phy_name(phy),
+			reg.reg, val, mask, expected_val);
+		return false;
+	}
+
+	return true;
+}
+
+static bool icl_verify_procmon_ref_values(struct drm_i915_private *dev_priv,
+					  enum phy phy)
+{
+	const struct icl_procmon *procmon;
+	bool ret;
+
+	procmon = icl_get_procmon_ref_values(dev_priv, phy);
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "Combo PHY %c Voltage/Process Info : %s\n",
+		    phy_name(phy), procmon->name);
+
+	ret = check_phy_reg(dev_priv, phy, ICL_PORT_COMP_DW1(phy),
+			    (0xff << 16) | 0xff, procmon->dw1);
+	ret &= check_phy_reg(dev_priv, phy, ICL_PORT_COMP_DW9(phy),
+			     -1U, procmon->dw9);
+	ret &= check_phy_reg(dev_priv, phy, ICL_PORT_COMP_DW10(phy),
+			     -1U, procmon->dw10);
+
+	return ret;
+}
+
+static bool has_phy_misc(struct drm_i915_private *i915, enum phy phy)
+{
+	/*
+	 * Some platforms only expect PHY_MISC to be programmed for PHY-A and
+	 * PHY-B and may not even have instances of the register for the
+	 * other combo PHY's.
+	 *
+	 * ADL-S technically has three instances of PHY_MISC, but only requires
+	 * that we program it for PHY A.
+	 */
+
+	if (IS_ALDERLAKE_S(i915))
+		return phy == PHY_A;
+	else if (IS_JSL_EHL(i915) ||
+		 IS_ROCKETLAKE(i915) ||
+		 IS_DG1(i915))
+		return phy < PHY_C;
+
+	return true;
+}
+
+static bool icl_combo_phy_enabled(struct drm_i915_private *dev_priv,
+				  enum phy phy)
+{
+	/* The PHY C added by EHL has no PHY_MISC register */
+	if (!has_phy_misc(dev_priv, phy))
+		return intel_de_read(dev_priv, ICL_PORT_COMP_DW0(phy)) & COMP_INIT;
+	else
+		return !(intel_de_read(dev_priv, ICL_PHY_MISC(phy)) &
+			 ICL_PHY_MISC_DE_IO_COMP_PWR_DOWN) &&
+			(intel_de_read(dev_priv, ICL_PORT_COMP_DW0(phy)) & COMP_INIT);
+}
+
+static bool ehl_vbt_ddi_d_present(struct drm_i915_private *i915)
+{
+	bool ddi_a_present = intel_bios_is_port_present(i915, PORT_A);
+	bool ddi_d_present = intel_bios_is_port_present(i915, PORT_D);
+	bool dsi_present = intel_bios_is_dsi_present(i915, NULL);
+
+	/*
+	 * VBT's 'dvo port' field for child devices references the DDI, not
+	 * the PHY.  So if combo PHY A is wired up to drive an external
+	 * display, we should see a child device present on PORT_D and
+	 * nothing on PORT_A and no DSI.
+	 */
+	if (ddi_d_present && !ddi_a_present && !dsi_present)
+		return true;
+
+	/*
+	 * If we encounter a VBT that claims to have an external display on
+	 * DDI-D _and_ an internal display on DDI-A/DSI leave an error message
+	 * in the log and let the internal display win.
+	 */
+	if (ddi_d_present)
+		drm_err(&i915->drm,
+			"VBT claims to have both internal and external displays on PHY A.  Configuring for internal.\n");
+
+	return false;
+}
+
+static bool phy_is_master(struct drm_i915_private *dev_priv, enum phy phy)
+{
+	/*
+	 * Certain PHYs are connected to compensation resistors and act
+	 * as masters to other PHYs.
+	 *
+	 * ICL,TGL:
+	 *   A(master) -> B(slave), C(slave)
+	 * RKL,DG1:
+	 *   A(master) -> B(slave)
+	 *   C(master) -> D(slave)
+	 * ADL-S:
+	 *   A(master) -> B(slave), C(slave)
+	 *   D(master) -> E(slave)
+	 *
+	 * We must set the IREFGEN bit for any PHY acting as a master
+	 * to another PHY.
+	 */
+	if (phy == PHY_A)
+		return true;
+	else if (IS_ALDERLAKE_S(dev_priv))
+		return phy == PHY_D;
+	else if (IS_DG1(dev_priv) || IS_ROCKETLAKE(dev_priv))
+		return phy == PHY_C;
+
+	return false;
+}
+
+static bool icl_combo_phy_verify_state(struct drm_i915_private *dev_priv,
+				       enum phy phy)
+{
+	bool ret = true;
+	u32 expected_val = 0;
+
+	if (!icl_combo_phy_enabled(dev_priv, phy))
+		return false;
+
+	if (DISPLAY_VER(dev_priv) >= 12) {
+		ret &= check_phy_reg(dev_priv, phy, ICL_PORT_TX_DW8_LN(0, phy),
+				     ICL_PORT_TX_DW8_ODCC_CLK_SEL |
+				     ICL_PORT_TX_DW8_ODCC_CLK_DIV_SEL_MASK,
+				     ICL_PORT_TX_DW8_ODCC_CLK_SEL |
+				     ICL_PORT_TX_DW8_ODCC_CLK_DIV_SEL_DIV2);
+
+		ret &= check_phy_reg(dev_priv, phy, ICL_PORT_PCS_DW1_LN(0, phy),
+				     DCC_MODE_SELECT_MASK,
+				     DCC_MODE_SELECT_CONTINUOSLY);
+	}
+
+	ret &= icl_verify_procmon_ref_values(dev_priv, phy);
+
+	if (phy_is_master(dev_priv, phy)) {
+		ret &= check_phy_reg(dev_priv, phy, ICL_PORT_COMP_DW8(phy),
+				     IREFGEN, IREFGEN);
+
+		if (IS_JSL_EHL(dev_priv)) {
+			if (ehl_vbt_ddi_d_present(dev_priv))
+				expected_val = ICL_PHY_MISC_MUX_DDID;
+
+			ret &= check_phy_reg(dev_priv, phy, ICL_PHY_MISC(phy),
+					     ICL_PHY_MISC_MUX_DDID,
+					     expected_val);
+		}
+	}
+
+	ret &= check_phy_reg(dev_priv, phy, ICL_PORT_CL_DW5(phy),
+			     CL_POWER_DOWN_ENABLE, CL_POWER_DOWN_ENABLE);
+
+	return ret;
+}
+
+void intel_combo_phy_power_up_lanes(struct drm_i915_private *dev_priv,
+				    enum phy phy, bool is_dsi,
+				    int lane_count, bool lane_reversal)
+{
+	u8 lane_mask;
+	u32 val;
+
+	if (is_dsi) {
+		drm_WARN_ON(&dev_priv->drm, lane_reversal);
+
+		switch (lane_count) {
+		case 1:
+			lane_mask = PWR_DOWN_LN_3_1_0;
+			break;
+		case 2:
+			lane_mask = PWR_DOWN_LN_3_1;
+			break;
+		case 3:
+			lane_mask = PWR_DOWN_LN_3;
+			break;
+		default:
+			MISSING_CASE(lane_count);
+			fallthrough;
+		case 4:
+			lane_mask = PWR_UP_ALL_LANES;
+			break;
+		}
+	} else {
+		switch (lane_count) {
+		case 1:
+			lane_mask = lane_reversal ? PWR_DOWN_LN_2_1_0 :
+						    PWR_DOWN_LN_3_2_1;
+			break;
+		case 2:
+			lane_mask = lane_reversal ? PWR_DOWN_LN_1_0 :
+						    PWR_DOWN_LN_3_2;
+			break;
+		default:
+			MISSING_CASE(lane_count);
+			fallthrough;
+		case 4:
+			lane_mask = PWR_UP_ALL_LANES;
+			break;
+		}
+	}
+
+	val = intel_de_read(dev_priv, ICL_PORT_CL_DW10(phy));
+	val &= ~PWR_DOWN_LN_MASK;
+	val |= lane_mask;
+	intel_de_write(dev_priv, ICL_PORT_CL_DW10(phy), val);
+}
+
+static void icl_combo_phys_init(struct drm_i915_private *dev_priv)
+{
+	enum phy phy;
+
+	for_each_combo_phy(dev_priv, phy) {
+		u32 val;
+
+		if (icl_combo_phy_verify_state(dev_priv, phy)) {
+			drm_dbg(&dev_priv->drm,
+				"Combo PHY %c already enabled, won't reprogram it.\n",
+				phy_name(phy));
+			continue;
+		}
+
+		if (!has_phy_misc(dev_priv, phy))
+			goto skip_phy_misc;
+
+		/*
+		 * EHL's combo PHY A can be hooked up to either an external
+		 * display (via DDI-D) or an internal display (via DDI-A or
+		 * the DSI DPHY).  This is a motherboard design decision that
+		 * can't be changed on the fly, so initialize the PHY's mux
+		 * based on whether our VBT indicates the presence of any
+		 * "internal" child devices.
+		 */
+		val = intel_de_read(dev_priv, ICL_PHY_MISC(phy));
+		if (IS_JSL_EHL(dev_priv) && phy == PHY_A) {
+			val &= ~ICL_PHY_MISC_MUX_DDID;
+
+			if (ehl_vbt_ddi_d_present(dev_priv))
+				val |= ICL_PHY_MISC_MUX_DDID;
+		}
+
+		val &= ~ICL_PHY_MISC_DE_IO_COMP_PWR_DOWN;
+		intel_de_write(dev_priv, ICL_PHY_MISC(phy), val);
+
+skip_phy_misc:
+		if (DISPLAY_VER(dev_priv) >= 12) {
+			val = intel_de_read(dev_priv, ICL_PORT_TX_DW8_LN(0, phy));
+			val &= ~ICL_PORT_TX_DW8_ODCC_CLK_DIV_SEL_MASK;
+			val |= ICL_PORT_TX_DW8_ODCC_CLK_SEL;
+			val |= ICL_PORT_TX_DW8_ODCC_CLK_DIV_SEL_DIV2;
+			intel_de_write(dev_priv, ICL_PORT_TX_DW8_GRP(phy), val);
+
+			val = intel_de_read(dev_priv, ICL_PORT_PCS_DW1_LN(0, phy));
+			val &= ~DCC_MODE_SELECT_MASK;
+			val |= DCC_MODE_SELECT_CONTINUOSLY;
+			intel_de_write(dev_priv, ICL_PORT_PCS_DW1_GRP(phy), val);
+		}
+
+		icl_set_procmon_ref_values(dev_priv, phy);
+
+		if (phy_is_master(dev_priv, phy)) {
+			val = intel_de_read(dev_priv, ICL_PORT_COMP_DW8(phy));
+			val |= IREFGEN;
+			intel_de_write(dev_priv, ICL_PORT_COMP_DW8(phy), val);
+		}
+
+		val = intel_de_read(dev_priv, ICL_PORT_COMP_DW0(phy));
+		val |= COMP_INIT;
+		intel_de_write(dev_priv, ICL_PORT_COMP_DW0(phy), val);
+
+		val = intel_de_read(dev_priv, ICL_PORT_CL_DW5(phy));
+		val |= CL_POWER_DOWN_ENABLE;
+		intel_de_write(dev_priv, ICL_PORT_CL_DW5(phy), val);
+	}
+}
+
+static void icl_combo_phys_uninit(struct drm_i915_private *dev_priv)
+{
+	enum phy phy;
+
+	for_each_combo_phy_reverse(dev_priv, phy) {
+		u32 val;
+
+		if (phy == PHY_A &&
+		    !icl_combo_phy_verify_state(dev_priv, phy)) {
+			if (IS_TIGERLAKE(dev_priv) || IS_DG1(dev_priv)) {
+				/*
+				 * A known problem with old ifwi:
+				 * https://gitlab.freedesktop.org/drm/intel/-/issues/2411
+				 * Suppress the warning for CI. Remove ASAP!
+				 */
+				drm_dbg_kms(&dev_priv->drm,
+					    "Combo PHY %c HW state changed unexpectedly\n",
+					    phy_name(phy));
+			} else {
+				drm_warn(&dev_priv->drm,
+					 "Combo PHY %c HW state changed unexpectedly\n",
+					 phy_name(phy));
+			}
+		}
+
+		if (!has_phy_misc(dev_priv, phy))
+			goto skip_phy_misc;
+
+		val = intel_de_read(dev_priv, ICL_PHY_MISC(phy));
+		val |= ICL_PHY_MISC_DE_IO_COMP_PWR_DOWN;
+		intel_de_write(dev_priv, ICL_PHY_MISC(phy), val);
+
+skip_phy_misc:
+		val = intel_de_read(dev_priv, ICL_PORT_COMP_DW0(phy));
+		val &= ~COMP_INIT;
+		intel_de_write(dev_priv, ICL_PORT_COMP_DW0(phy), val);
+	}
+}
+
+void intel_combo_phy_init(struct drm_i915_private *i915)
+{
+	icl_combo_phys_init(i915);
+}
+
+void intel_combo_phy_uninit(struct drm_i915_private *i915)
+{
+	icl_combo_phys_uninit(i915);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_combo_phy.h b/drivers/gpu/drm/i915/display/intel_combo_phy.h
new file mode 100644
index 000000000..660886f86
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_combo_phy.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_COMBO_PHY_H__
+#define __INTEL_COMBO_PHY_H__
+
+#include <linux/types.h>
+
+struct drm_i915_private;
+enum phy;
+
+void intel_combo_phy_init(struct drm_i915_private *dev_priv);
+void intel_combo_phy_uninit(struct drm_i915_private *dev_priv);
+void intel_combo_phy_power_up_lanes(struct drm_i915_private *dev_priv,
+				    enum phy phy, bool is_dsi,
+				    int lane_count, bool lane_reversal);
+
+#endif /* __INTEL_COMBO_PHY_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_combo_phy_regs.h b/drivers/gpu/drm/i915/display/intel_combo_phy_regs.h
new file mode 100644
index 000000000..2ed65193c
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_combo_phy_regs.h
@@ -0,0 +1,162 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#ifndef __INTEL_COMBO_PHY_REGS__
+#define __INTEL_COMBO_PHY_REGS__
+
+#include "i915_reg_defs.h"
+
+#define _ICL_COMBOPHY_A				0x162000
+#define _ICL_COMBOPHY_B				0x6C000
+#define _EHL_COMBOPHY_C				0x160000
+#define _RKL_COMBOPHY_D				0x161000
+#define _ADL_COMBOPHY_E				0x16B000
+
+#define _ICL_COMBOPHY(phy)			_PICK(phy, _ICL_COMBOPHY_A, \
+						      _ICL_COMBOPHY_B, \
+						      _EHL_COMBOPHY_C, \
+						      _RKL_COMBOPHY_D, \
+						      _ADL_COMBOPHY_E)
+
+/* ICL Port CL_DW registers */
+#define _ICL_PORT_CL_DW(dw, phy)		(_ICL_COMBOPHY(phy) + \
+						 4 * (dw))
+
+#define ICL_PORT_CL_DW5(phy)			_MMIO(_ICL_PORT_CL_DW(5, phy))
+#define   CL_POWER_DOWN_ENABLE			(1 << 4)
+#define   SUS_CLOCK_CONFIG			(3 << 0)
+
+#define ICL_PORT_CL_DW10(phy)			_MMIO(_ICL_PORT_CL_DW(10, phy))
+#define  PG_SEQ_DELAY_OVERRIDE_MASK		(3 << 25)
+#define  PG_SEQ_DELAY_OVERRIDE_SHIFT		25
+#define  PG_SEQ_DELAY_OVERRIDE_ENABLE		(1 << 24)
+#define  PWR_UP_ALL_LANES			(0x0 << 4)
+#define  PWR_DOWN_LN_3_2_1			(0xe << 4)
+#define  PWR_DOWN_LN_3_2			(0xc << 4)
+#define  PWR_DOWN_LN_3				(0x8 << 4)
+#define  PWR_DOWN_LN_2_1_0			(0x7 << 4)
+#define  PWR_DOWN_LN_1_0			(0x3 << 4)
+#define  PWR_DOWN_LN_3_1			(0xa << 4)
+#define  PWR_DOWN_LN_3_1_0			(0xb << 4)
+#define  PWR_DOWN_LN_MASK			(0xf << 4)
+#define  PWR_DOWN_LN_SHIFT			4
+#define  EDP4K2K_MODE_OVRD_EN			(1 << 3)
+#define  EDP4K2K_MODE_OVRD_OPTIMIZED		(1 << 2)
+
+#define ICL_PORT_CL_DW12(phy)			_MMIO(_ICL_PORT_CL_DW(12, phy))
+#define   ICL_LANE_ENABLE_AUX			(1 << 0)
+
+/* ICL Port COMP_DW registers */
+#define _ICL_PORT_COMP				0x100
+#define _ICL_PORT_COMP_DW(dw, phy)		(_ICL_COMBOPHY(phy) + \
+						 _ICL_PORT_COMP + 4 * (dw))
+
+#define ICL_PORT_COMP_DW0(phy)			_MMIO(_ICL_PORT_COMP_DW(0, phy))
+#define   COMP_INIT				(1 << 31)
+
+#define ICL_PORT_COMP_DW1(phy)			_MMIO(_ICL_PORT_COMP_DW(1, phy))
+
+#define ICL_PORT_COMP_DW3(phy)			_MMIO(_ICL_PORT_COMP_DW(3, phy))
+#define   PROCESS_INFO_DOT_0			(0 << 26)
+#define   PROCESS_INFO_DOT_1			(1 << 26)
+#define   PROCESS_INFO_DOT_4			(2 << 26)
+#define   PROCESS_INFO_MASK			(7 << 26)
+#define   PROCESS_INFO_SHIFT			26
+#define   VOLTAGE_INFO_0_85V			(0 << 24)
+#define   VOLTAGE_INFO_0_95V			(1 << 24)
+#define   VOLTAGE_INFO_1_05V			(2 << 24)
+#define   VOLTAGE_INFO_MASK			(3 << 24)
+#define   VOLTAGE_INFO_SHIFT			24
+
+#define ICL_PORT_COMP_DW8(phy)			_MMIO(_ICL_PORT_COMP_DW(8, phy))
+#define   IREFGEN				(1 << 24)
+
+#define ICL_PORT_COMP_DW9(phy)			_MMIO(_ICL_PORT_COMP_DW(9, phy))
+
+#define ICL_PORT_COMP_DW10(phy)			_MMIO(_ICL_PORT_COMP_DW(10, phy))
+
+/* ICL Port PCS registers */
+#define _ICL_PORT_PCS_AUX			0x300
+#define _ICL_PORT_PCS_GRP			0x600
+#define _ICL_PORT_PCS_LN(ln)			(0x800 + (ln) * 0x100)
+#define _ICL_PORT_PCS_DW_AUX(dw, phy)		(_ICL_COMBOPHY(phy) + \
+						 _ICL_PORT_PCS_AUX + 4 * (dw))
+#define _ICL_PORT_PCS_DW_GRP(dw, phy)		(_ICL_COMBOPHY(phy) + \
+						 _ICL_PORT_PCS_GRP + 4 * (dw))
+#define _ICL_PORT_PCS_DW_LN(dw, ln, phy)	 (_ICL_COMBOPHY(phy) + \
+						  _ICL_PORT_PCS_LN(ln) + 4 * (dw))
+#define ICL_PORT_PCS_DW1_AUX(phy)		_MMIO(_ICL_PORT_PCS_DW_AUX(1, phy))
+#define ICL_PORT_PCS_DW1_GRP(phy)		_MMIO(_ICL_PORT_PCS_DW_GRP(1, phy))
+#define ICL_PORT_PCS_DW1_LN(ln, phy)		_MMIO(_ICL_PORT_PCS_DW_LN(1, ln, phy))
+#define   DCC_MODE_SELECT_MASK			(0x3 << 20)
+#define   DCC_MODE_SELECT_CONTINUOSLY		(0x3 << 20)
+#define   COMMON_KEEPER_EN			(1 << 26)
+#define   LATENCY_OPTIM_MASK			(0x3 << 2)
+#define   LATENCY_OPTIM_VAL(x)			((x) << 2)
+
+/* ICL Port TX registers */
+#define _ICL_PORT_TX_AUX			0x380
+#define _ICL_PORT_TX_GRP			0x680
+#define _ICL_PORT_TX_LN(ln)			(0x880 + (ln) * 0x100)
+
+#define _ICL_PORT_TX_DW_AUX(dw, phy)		(_ICL_COMBOPHY(phy) + \
+						 _ICL_PORT_TX_AUX + 4 * (dw))
+#define _ICL_PORT_TX_DW_GRP(dw, phy)		(_ICL_COMBOPHY(phy) + \
+						 _ICL_PORT_TX_GRP + 4 * (dw))
+#define _ICL_PORT_TX_DW_LN(dw, ln, phy) 	(_ICL_COMBOPHY(phy) + \
+						  _ICL_PORT_TX_LN(ln) + 4 * (dw))
+
+#define ICL_PORT_TX_DW2_AUX(phy)		_MMIO(_ICL_PORT_TX_DW_AUX(2, phy))
+#define ICL_PORT_TX_DW2_GRP(phy)		_MMIO(_ICL_PORT_TX_DW_GRP(2, phy))
+#define ICL_PORT_TX_DW2_LN(ln, phy)		_MMIO(_ICL_PORT_TX_DW_LN(2, ln, phy))
+#define   SWING_SEL_UPPER(x)			(((x) >> 3) << 15)
+#define   SWING_SEL_UPPER_MASK			(1 << 15)
+#define   SWING_SEL_LOWER(x)			(((x) & 0x7) << 11)
+#define   SWING_SEL_LOWER_MASK			(0x7 << 11)
+#define   FRC_LATENCY_OPTIM_MASK		(0x7 << 8)
+#define   FRC_LATENCY_OPTIM_VAL(x)		((x) << 8)
+#define   RCOMP_SCALAR(x)			((x) << 0)
+#define   RCOMP_SCALAR_MASK			(0xFF << 0)
+
+#define ICL_PORT_TX_DW4_AUX(phy)		_MMIO(_ICL_PORT_TX_DW_AUX(4, phy))
+#define ICL_PORT_TX_DW4_GRP(phy)		_MMIO(_ICL_PORT_TX_DW_GRP(4, phy))
+#define ICL_PORT_TX_DW4_LN(ln, phy)		_MMIO(_ICL_PORT_TX_DW_LN(4, ln, phy))
+#define   LOADGEN_SELECT			(1 << 31)
+#define   POST_CURSOR_1(x)			((x) << 12)
+#define   POST_CURSOR_1_MASK			(0x3F << 12)
+#define   POST_CURSOR_2(x)			((x) << 6)
+#define   POST_CURSOR_2_MASK			(0x3F << 6)
+#define   CURSOR_COEFF(x)			((x) << 0)
+#define   CURSOR_COEFF_MASK			(0x3F << 0)
+
+#define ICL_PORT_TX_DW5_AUX(phy)		_MMIO(_ICL_PORT_TX_DW_AUX(5, phy))
+#define ICL_PORT_TX_DW5_GRP(phy)		_MMIO(_ICL_PORT_TX_DW_GRP(5, phy))
+#define ICL_PORT_TX_DW5_LN(ln, phy)		_MMIO(_ICL_PORT_TX_DW_LN(5, ln, phy))
+#define   TX_TRAINING_EN			(1 << 31)
+#define   TAP2_DISABLE				(1 << 30)
+#define   TAP3_DISABLE				(1 << 29)
+#define   SCALING_MODE_SEL(x)			((x) << 18)
+#define   SCALING_MODE_SEL_MASK			(0x7 << 18)
+#define   RTERM_SELECT(x)			((x) << 3)
+#define   RTERM_SELECT_MASK			(0x7 << 3)
+
+#define ICL_PORT_TX_DW7_AUX(phy)		_MMIO(_ICL_PORT_TX_DW_AUX(7, phy))
+#define ICL_PORT_TX_DW7_GRP(phy)		_MMIO(_ICL_PORT_TX_DW_GRP(7, phy))
+#define ICL_PORT_TX_DW7_LN(ln, phy)		_MMIO(_ICL_PORT_TX_DW_LN(7, ln, phy))
+#define   N_SCALAR(x)				((x) << 24)
+#define   N_SCALAR_MASK				(0x7F << 24)
+
+#define ICL_PORT_TX_DW8_AUX(phy)		_MMIO(_ICL_PORT_TX_DW_AUX(8, phy))
+#define ICL_PORT_TX_DW8_GRP(phy)		_MMIO(_ICL_PORT_TX_DW_GRP(8, phy))
+#define ICL_PORT_TX_DW8_LN(ln, phy)		_MMIO(_ICL_PORT_TX_DW_LN(8, ln, phy))
+#define   ICL_PORT_TX_DW8_ODCC_CLK_SEL		REG_BIT(31)
+#define   ICL_PORT_TX_DW8_ODCC_CLK_DIV_SEL_MASK	REG_GENMASK(30, 29)
+#define   ICL_PORT_TX_DW8_ODCC_CLK_DIV_SEL_DIV2	REG_FIELD_PREP(ICL_PORT_TX_DW8_ODCC_CLK_DIV_SEL_MASK, 0x1)
+
+#define _ICL_DPHY_CHKN_REG			0x194
+#define ICL_DPHY_CHKN(port)			_MMIO(_ICL_COMBOPHY(port) + _ICL_DPHY_CHKN_REG)
+#define   ICL_DPHY_CHKN_AFE_OVER_PPI_STRAP	REG_BIT(7)
+
+#endif /* __INTEL_COMBO_PHY_REGS__ */
diff --git a/drivers/gpu/drm/i915/display/intel_connector.c b/drivers/gpu/drm/i915/display/intel_connector.c
new file mode 100644
index 000000000..8bb296f3d
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_connector.c
@@ -0,0 +1,295 @@
+/*
+ * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
+ * Copyright (c) 2007, 2010 Intel Corporation
+ *   Jesse Barnes <jesse.barnes@intel.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <linux/i2c.h>
+#include <linux/slab.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_edid.h>
+
+#include "i915_drv.h"
+#include "intel_backlight.h"
+#include "intel_connector.h"
+#include "intel_display_debugfs.h"
+#include "intel_display_types.h"
+#include "intel_hdcp.h"
+#include "intel_panel.h"
+
+int intel_connector_init(struct intel_connector *connector)
+{
+	struct intel_digital_connector_state *conn_state;
+
+	/*
+	 * Allocate enough memory to hold intel_digital_connector_state,
+	 * This might be a few bytes too many, but for connectors that don't
+	 * need it we'll free the state and allocate a smaller one on the first
+	 * successful commit anyway.
+	 */
+	conn_state = kzalloc(sizeof(*conn_state), GFP_KERNEL);
+	if (!conn_state)
+		return -ENOMEM;
+
+	__drm_atomic_helper_connector_reset(&connector->base,
+					    &conn_state->base);
+
+	intel_panel_init_alloc(connector);
+
+	return 0;
+}
+
+struct intel_connector *intel_connector_alloc(void)
+{
+	struct intel_connector *connector;
+
+	connector = kzalloc(sizeof(*connector), GFP_KERNEL);
+	if (!connector)
+		return NULL;
+
+	if (intel_connector_init(connector) < 0) {
+		kfree(connector);
+		return NULL;
+	}
+
+	return connector;
+}
+
+/*
+ * Free the bits allocated by intel_connector_alloc.
+ * This should only be used after intel_connector_alloc has returned
+ * successfully, and before drm_connector_init returns successfully.
+ * Otherwise the destroy callbacks for the connector and the state should
+ * take care of proper cleanup/free (see intel_connector_destroy).
+ */
+void intel_connector_free(struct intel_connector *connector)
+{
+	kfree(to_intel_digital_connector_state(connector->base.state));
+	kfree(connector);
+}
+
+/*
+ * Connector type independent destroy hook for drm_connector_funcs.
+ */
+void intel_connector_destroy(struct drm_connector *connector)
+{
+	struct intel_connector *intel_connector = to_intel_connector(connector);
+
+	kfree(intel_connector->detect_edid);
+
+	intel_hdcp_cleanup(intel_connector);
+
+	if (!IS_ERR_OR_NULL(intel_connector->edid))
+		kfree(intel_connector->edid);
+
+	intel_panel_fini(intel_connector);
+
+	drm_connector_cleanup(connector);
+
+	if (intel_connector->port)
+		drm_dp_mst_put_port_malloc(intel_connector->port);
+
+	kfree(connector);
+}
+
+int intel_connector_register(struct drm_connector *connector)
+{
+	struct intel_connector *intel_connector = to_intel_connector(connector);
+	int ret;
+
+	ret = intel_backlight_device_register(intel_connector);
+	if (ret)
+		goto err;
+
+	if (i915_inject_probe_failure(to_i915(connector->dev))) {
+		ret = -EFAULT;
+		goto err_backlight;
+	}
+
+	intel_connector_debugfs_add(intel_connector);
+
+	return 0;
+
+err_backlight:
+	intel_backlight_device_unregister(intel_connector);
+err:
+	return ret;
+}
+
+void intel_connector_unregister(struct drm_connector *connector)
+{
+	struct intel_connector *intel_connector = to_intel_connector(connector);
+
+	intel_backlight_device_unregister(intel_connector);
+}
+
+void intel_connector_attach_encoder(struct intel_connector *connector,
+				    struct intel_encoder *encoder)
+{
+	connector->encoder = encoder;
+	drm_connector_attach_encoder(&connector->base, &encoder->base);
+}
+
+/*
+ * Simple connector->get_hw_state implementation for encoders that support only
+ * one connector and no cloning and hence the encoder state determines the state
+ * of the connector.
+ */
+bool intel_connector_get_hw_state(struct intel_connector *connector)
+{
+	enum pipe pipe = 0;
+	struct intel_encoder *encoder = intel_attached_encoder(connector);
+
+	return encoder->get_hw_state(encoder, &pipe);
+}
+
+enum pipe intel_connector_get_pipe(struct intel_connector *connector)
+{
+	struct drm_device *dev = connector->base.dev;
+
+	drm_WARN_ON(dev,
+		    !drm_modeset_is_locked(&dev->mode_config.connection_mutex));
+
+	if (!connector->base.state->crtc)
+		return INVALID_PIPE;
+
+	return to_intel_crtc(connector->base.state->crtc)->pipe;
+}
+
+/**
+ * intel_connector_update_modes - update connector from edid
+ * @connector: DRM connector device to use
+ * @edid: previously read EDID information
+ */
+int intel_connector_update_modes(struct drm_connector *connector,
+				struct edid *edid)
+{
+	int ret;
+
+	drm_connector_update_edid_property(connector, edid);
+	ret = drm_add_edid_modes(connector, edid);
+
+	return ret;
+}
+
+/**
+ * intel_ddc_get_modes - get modelist from monitor
+ * @connector: DRM connector device to use
+ * @adapter: i2c adapter
+ *
+ * Fetch the EDID information from @connector using the DDC bus.
+ */
+int intel_ddc_get_modes(struct drm_connector *connector,
+			struct i2c_adapter *adapter)
+{
+	struct edid *edid;
+	int ret;
+
+	edid = drm_get_edid(connector, adapter);
+	if (!edid)
+		return 0;
+
+	ret = intel_connector_update_modes(connector, edid);
+	kfree(edid);
+
+	return ret;
+}
+
+static const struct drm_prop_enum_list force_audio_names[] = {
+	{ HDMI_AUDIO_OFF_DVI, "force-dvi" },
+	{ HDMI_AUDIO_OFF, "off" },
+	{ HDMI_AUDIO_AUTO, "auto" },
+	{ HDMI_AUDIO_ON, "on" },
+};
+
+void
+intel_attach_force_audio_property(struct drm_connector *connector)
+{
+	struct drm_device *dev = connector->dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct drm_property *prop;
+
+	prop = dev_priv->display.properties.force_audio;
+	if (prop == NULL) {
+		prop = drm_property_create_enum(dev, 0,
+					   "audio",
+					   force_audio_names,
+					   ARRAY_SIZE(force_audio_names));
+		if (prop == NULL)
+			return;
+
+		dev_priv->display.properties.force_audio = prop;
+	}
+	drm_object_attach_property(&connector->base, prop, 0);
+}
+
+static const struct drm_prop_enum_list broadcast_rgb_names[] = {
+	{ INTEL_BROADCAST_RGB_AUTO, "Automatic" },
+	{ INTEL_BROADCAST_RGB_FULL, "Full" },
+	{ INTEL_BROADCAST_RGB_LIMITED, "Limited 16:235" },
+};
+
+void
+intel_attach_broadcast_rgb_property(struct drm_connector *connector)
+{
+	struct drm_device *dev = connector->dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct drm_property *prop;
+
+	prop = dev_priv->display.properties.broadcast_rgb;
+	if (prop == NULL) {
+		prop = drm_property_create_enum(dev, DRM_MODE_PROP_ENUM,
+					   "Broadcast RGB",
+					   broadcast_rgb_names,
+					   ARRAY_SIZE(broadcast_rgb_names));
+		if (prop == NULL)
+			return;
+
+		dev_priv->display.properties.broadcast_rgb = prop;
+	}
+
+	drm_object_attach_property(&connector->base, prop, 0);
+}
+
+void
+intel_attach_aspect_ratio_property(struct drm_connector *connector)
+{
+	if (!drm_mode_create_aspect_ratio_property(connector->dev))
+		drm_object_attach_property(&connector->base,
+			connector->dev->mode_config.aspect_ratio_property,
+			DRM_MODE_PICTURE_ASPECT_NONE);
+}
+
+void
+intel_attach_hdmi_colorspace_property(struct drm_connector *connector)
+{
+	if (!drm_mode_create_hdmi_colorspace_property(connector))
+		drm_connector_attach_colorspace_property(connector);
+}
+
+void
+intel_attach_dp_colorspace_property(struct drm_connector *connector)
+{
+	if (!drm_mode_create_dp_colorspace_property(connector))
+		drm_connector_attach_colorspace_property(connector);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_connector.h b/drivers/gpu/drm/i915/display/intel_connector.h
new file mode 100644
index 000000000..661a37a3c
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_connector.h
@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_CONNECTOR_H__
+#define __INTEL_CONNECTOR_H__
+
+#include "intel_display.h"
+
+struct drm_connector;
+struct edid;
+struct i2c_adapter;
+struct intel_connector;
+struct intel_encoder;
+
+int intel_connector_init(struct intel_connector *connector);
+struct intel_connector *intel_connector_alloc(void);
+void intel_connector_free(struct intel_connector *connector);
+void intel_connector_destroy(struct drm_connector *connector);
+int intel_connector_register(struct drm_connector *connector);
+void intel_connector_unregister(struct drm_connector *connector);
+void intel_connector_attach_encoder(struct intel_connector *connector,
+				    struct intel_encoder *encoder);
+bool intel_connector_get_hw_state(struct intel_connector *connector);
+enum pipe intel_connector_get_pipe(struct intel_connector *connector);
+int intel_connector_update_modes(struct drm_connector *connector,
+				 struct edid *edid);
+int intel_ddc_get_modes(struct drm_connector *c, struct i2c_adapter *adapter);
+void intel_attach_force_audio_property(struct drm_connector *connector);
+void intel_attach_broadcast_rgb_property(struct drm_connector *connector);
+void intel_attach_aspect_ratio_property(struct drm_connector *connector);
+void intel_attach_hdmi_colorspace_property(struct drm_connector *connector);
+void intel_attach_dp_colorspace_property(struct drm_connector *connector);
+
+#endif /* __INTEL_CONNECTOR_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_crt.c b/drivers/gpu/drm/i915/display/intel_crt.c
new file mode 100644
index 000000000..e60b2cf84
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_crt.c
@@ -0,0 +1,1124 @@
+/*
+ * Copyright © 2006-2007 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *	Eric Anholt <eric@anholt.net>
+ */
+
+#include <linux/dmi.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_probe_helper.h>
+
+#include "i915_drv.h"
+#include "intel_connector.h"
+#include "intel_crt.h"
+#include "intel_crtc.h"
+#include "intel_ddi.h"
+#include "intel_ddi_buf_trans.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_fdi.h"
+#include "intel_fifo_underrun.h"
+#include "intel_gmbus.h"
+#include "intel_hotplug.h"
+#include "intel_pch_display.h"
+#include "intel_pch_refclk.h"
+
+/* Here's the desired hotplug mode */
+#define ADPA_HOTPLUG_BITS (ADPA_CRT_HOTPLUG_PERIOD_128 |		\
+			   ADPA_CRT_HOTPLUG_WARMUP_10MS |		\
+			   ADPA_CRT_HOTPLUG_SAMPLE_4S |			\
+			   ADPA_CRT_HOTPLUG_VOLTAGE_50 |		\
+			   ADPA_CRT_HOTPLUG_VOLREF_325MV |		\
+			   ADPA_CRT_HOTPLUG_ENABLE)
+
+struct intel_crt {
+	struct intel_encoder base;
+	/* DPMS state is stored in the connector, which we need in the
+	 * encoder's enable/disable callbacks */
+	struct intel_connector *connector;
+	bool force_hotplug_required;
+	i915_reg_t adpa_reg;
+};
+
+static struct intel_crt *intel_encoder_to_crt(struct intel_encoder *encoder)
+{
+	return container_of(encoder, struct intel_crt, base);
+}
+
+static struct intel_crt *intel_attached_crt(struct intel_connector *connector)
+{
+	return intel_encoder_to_crt(intel_attached_encoder(connector));
+}
+
+bool intel_crt_port_enabled(struct drm_i915_private *dev_priv,
+			    i915_reg_t adpa_reg, enum pipe *pipe)
+{
+	u32 val;
+
+	val = intel_de_read(dev_priv, adpa_reg);
+
+	/* asserts want to know the pipe even if the port is disabled */
+	if (HAS_PCH_CPT(dev_priv))
+		*pipe = (val & ADPA_PIPE_SEL_MASK_CPT) >> ADPA_PIPE_SEL_SHIFT_CPT;
+	else
+		*pipe = (val & ADPA_PIPE_SEL_MASK) >> ADPA_PIPE_SEL_SHIFT;
+
+	return val & ADPA_DAC_ENABLE;
+}
+
+static bool intel_crt_get_hw_state(struct intel_encoder *encoder,
+				   enum pipe *pipe)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crt *crt = intel_encoder_to_crt(encoder);
+	intel_wakeref_t wakeref;
+	bool ret;
+
+	wakeref = intel_display_power_get_if_enabled(dev_priv,
+						     encoder->power_domain);
+	if (!wakeref)
+		return false;
+
+	ret = intel_crt_port_enabled(dev_priv, crt->adpa_reg, pipe);
+
+	intel_display_power_put(dev_priv, encoder->power_domain, wakeref);
+
+	return ret;
+}
+
+static unsigned int intel_crt_get_flags(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crt *crt = intel_encoder_to_crt(encoder);
+	u32 tmp, flags = 0;
+
+	tmp = intel_de_read(dev_priv, crt->adpa_reg);
+
+	if (tmp & ADPA_HSYNC_ACTIVE_HIGH)
+		flags |= DRM_MODE_FLAG_PHSYNC;
+	else
+		flags |= DRM_MODE_FLAG_NHSYNC;
+
+	if (tmp & ADPA_VSYNC_ACTIVE_HIGH)
+		flags |= DRM_MODE_FLAG_PVSYNC;
+	else
+		flags |= DRM_MODE_FLAG_NVSYNC;
+
+	return flags;
+}
+
+static void intel_crt_get_config(struct intel_encoder *encoder,
+				 struct intel_crtc_state *pipe_config)
+{
+	pipe_config->output_types |= BIT(INTEL_OUTPUT_ANALOG);
+
+	pipe_config->hw.adjusted_mode.flags |= intel_crt_get_flags(encoder);
+
+	pipe_config->hw.adjusted_mode.crtc_clock = pipe_config->port_clock;
+}
+
+static void hsw_crt_get_config(struct intel_encoder *encoder,
+			       struct intel_crtc_state *pipe_config)
+{
+	lpt_pch_get_config(pipe_config);
+
+	hsw_ddi_get_config(encoder, pipe_config);
+
+	pipe_config->hw.adjusted_mode.flags &= ~(DRM_MODE_FLAG_PHSYNC |
+					      DRM_MODE_FLAG_NHSYNC |
+					      DRM_MODE_FLAG_PVSYNC |
+					      DRM_MODE_FLAG_NVSYNC);
+	pipe_config->hw.adjusted_mode.flags |= intel_crt_get_flags(encoder);
+}
+
+/* Note: The caller is required to filter out dpms modes not supported by the
+ * platform. */
+static void intel_crt_set_dpms(struct intel_encoder *encoder,
+			       const struct intel_crtc_state *crtc_state,
+			       int mode)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crt *crt = intel_encoder_to_crt(encoder);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	const struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode;
+	u32 adpa;
+
+	if (DISPLAY_VER(dev_priv) >= 5)
+		adpa = ADPA_HOTPLUG_BITS;
+	else
+		adpa = 0;
+
+	if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
+		adpa |= ADPA_HSYNC_ACTIVE_HIGH;
+	if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
+		adpa |= ADPA_VSYNC_ACTIVE_HIGH;
+
+	/* For CPT allow 3 pipe config, for others just use A or B */
+	if (HAS_PCH_LPT(dev_priv))
+		; /* Those bits don't exist here */
+	else if (HAS_PCH_CPT(dev_priv))
+		adpa |= ADPA_PIPE_SEL_CPT(crtc->pipe);
+	else
+		adpa |= ADPA_PIPE_SEL(crtc->pipe);
+
+	if (!HAS_PCH_SPLIT(dev_priv))
+		intel_de_write(dev_priv, BCLRPAT(crtc->pipe), 0);
+
+	switch (mode) {
+	case DRM_MODE_DPMS_ON:
+		adpa |= ADPA_DAC_ENABLE;
+		break;
+	case DRM_MODE_DPMS_STANDBY:
+		adpa |= ADPA_DAC_ENABLE | ADPA_HSYNC_CNTL_DISABLE;
+		break;
+	case DRM_MODE_DPMS_SUSPEND:
+		adpa |= ADPA_DAC_ENABLE | ADPA_VSYNC_CNTL_DISABLE;
+		break;
+	case DRM_MODE_DPMS_OFF:
+		adpa |= ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE;
+		break;
+	}
+
+	intel_de_write(dev_priv, crt->adpa_reg, adpa);
+}
+
+static void intel_disable_crt(struct intel_atomic_state *state,
+			      struct intel_encoder *encoder,
+			      const struct intel_crtc_state *old_crtc_state,
+			      const struct drm_connector_state *old_conn_state)
+{
+	intel_crt_set_dpms(encoder, old_crtc_state, DRM_MODE_DPMS_OFF);
+}
+
+static void pch_disable_crt(struct intel_atomic_state *state,
+			    struct intel_encoder *encoder,
+			    const struct intel_crtc_state *old_crtc_state,
+			    const struct drm_connector_state *old_conn_state)
+{
+}
+
+static void pch_post_disable_crt(struct intel_atomic_state *state,
+				 struct intel_encoder *encoder,
+				 const struct intel_crtc_state *old_crtc_state,
+				 const struct drm_connector_state *old_conn_state)
+{
+	intel_disable_crt(state, encoder, old_crtc_state, old_conn_state);
+}
+
+static void hsw_disable_crt(struct intel_atomic_state *state,
+			    struct intel_encoder *encoder,
+			    const struct intel_crtc_state *old_crtc_state,
+			    const struct drm_connector_state *old_conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+
+	drm_WARN_ON(&dev_priv->drm, !old_crtc_state->has_pch_encoder);
+
+	intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, false);
+}
+
+static void hsw_post_disable_crt(struct intel_atomic_state *state,
+				 struct intel_encoder *encoder,
+				 const struct intel_crtc_state *old_crtc_state,
+				 const struct drm_connector_state *old_conn_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+
+	intel_crtc_vblank_off(old_crtc_state);
+
+	intel_disable_transcoder(old_crtc_state);
+
+	intel_ddi_disable_transcoder_func(old_crtc_state);
+
+	ilk_pfit_disable(old_crtc_state);
+
+	intel_ddi_disable_pipe_clock(old_crtc_state);
+
+	pch_post_disable_crt(state, encoder, old_crtc_state, old_conn_state);
+
+	lpt_pch_disable(state, crtc);
+
+	hsw_fdi_disable(encoder);
+
+	drm_WARN_ON(&dev_priv->drm, !old_crtc_state->has_pch_encoder);
+
+	intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, true);
+}
+
+static void hsw_pre_pll_enable_crt(struct intel_atomic_state *state,
+				   struct intel_encoder *encoder,
+				   const struct intel_crtc_state *crtc_state,
+				   const struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+
+	drm_WARN_ON(&dev_priv->drm, !crtc_state->has_pch_encoder);
+
+	intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, false);
+}
+
+static void hsw_pre_enable_crt(struct intel_atomic_state *state,
+			       struct intel_encoder *encoder,
+			       const struct intel_crtc_state *crtc_state,
+			       const struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	enum pipe pipe = crtc->pipe;
+
+	drm_WARN_ON(&dev_priv->drm, !crtc_state->has_pch_encoder);
+
+	intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
+
+	hsw_fdi_link_train(encoder, crtc_state);
+
+	intel_ddi_enable_pipe_clock(encoder, crtc_state);
+}
+
+static void hsw_enable_crt(struct intel_atomic_state *state,
+			   struct intel_encoder *encoder,
+			   const struct intel_crtc_state *crtc_state,
+			   const struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	enum pipe pipe = crtc->pipe;
+
+	drm_WARN_ON(&dev_priv->drm, !crtc_state->has_pch_encoder);
+
+	intel_ddi_enable_transcoder_func(encoder, crtc_state);
+
+	intel_enable_transcoder(crtc_state);
+
+	lpt_pch_enable(state, crtc);
+
+	intel_crtc_vblank_on(crtc_state);
+
+	intel_crt_set_dpms(encoder, crtc_state, DRM_MODE_DPMS_ON);
+
+	intel_crtc_wait_for_next_vblank(crtc);
+	intel_crtc_wait_for_next_vblank(crtc);
+	intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
+	intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, true);
+}
+
+static void intel_enable_crt(struct intel_atomic_state *state,
+			     struct intel_encoder *encoder,
+			     const struct intel_crtc_state *crtc_state,
+			     const struct drm_connector_state *conn_state)
+{
+	intel_crt_set_dpms(encoder, crtc_state, DRM_MODE_DPMS_ON);
+}
+
+static enum drm_mode_status
+intel_crt_mode_valid(struct drm_connector *connector,
+		     struct drm_display_mode *mode)
+{
+	struct drm_device *dev = connector->dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	int max_dotclk = dev_priv->max_dotclk_freq;
+	enum drm_mode_status status;
+	int max_clock;
+
+	status = intel_cpu_transcoder_mode_valid(dev_priv, mode);
+	if (status != MODE_OK)
+		return status;
+
+	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
+		return MODE_NO_DBLESCAN;
+
+	if (mode->clock < 25000)
+		return MODE_CLOCK_LOW;
+
+	if (HAS_PCH_LPT(dev_priv))
+		max_clock = 180000;
+	else if (IS_VALLEYVIEW(dev_priv))
+		/*
+		 * 270 MHz due to current DPLL limits,
+		 * DAC limit supposedly 355 MHz.
+		 */
+		max_clock = 270000;
+	else if (IS_DISPLAY_VER(dev_priv, 3, 4))
+		max_clock = 400000;
+	else
+		max_clock = 350000;
+	if (mode->clock > max_clock)
+		return MODE_CLOCK_HIGH;
+
+	if (mode->clock > max_dotclk)
+		return MODE_CLOCK_HIGH;
+
+	/* The FDI receiver on LPT only supports 8bpc and only has 2 lanes. */
+	if (HAS_PCH_LPT(dev_priv) &&
+	    ilk_get_lanes_required(mode->clock, 270000, 24) > 2)
+		return MODE_CLOCK_HIGH;
+
+	/* HSW/BDW FDI limited to 4k */
+	if (mode->hdisplay > 4096)
+		return MODE_H_ILLEGAL;
+
+	return MODE_OK;
+}
+
+static int intel_crt_compute_config(struct intel_encoder *encoder,
+				    struct intel_crtc_state *pipe_config,
+				    struct drm_connector_state *conn_state)
+{
+	struct drm_display_mode *adjusted_mode =
+		&pipe_config->hw.adjusted_mode;
+
+	if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)
+		return -EINVAL;
+
+	pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
+
+	return 0;
+}
+
+static int pch_crt_compute_config(struct intel_encoder *encoder,
+				  struct intel_crtc_state *pipe_config,
+				  struct drm_connector_state *conn_state)
+{
+	struct drm_display_mode *adjusted_mode =
+		&pipe_config->hw.adjusted_mode;
+
+	if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)
+		return -EINVAL;
+
+	pipe_config->has_pch_encoder = true;
+	pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
+
+	return 0;
+}
+
+static int hsw_crt_compute_config(struct intel_encoder *encoder,
+				  struct intel_crtc_state *pipe_config,
+				  struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct drm_display_mode *adjusted_mode =
+		&pipe_config->hw.adjusted_mode;
+
+	if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)
+		return -EINVAL;
+
+	/* HSW/BDW FDI limited to 4k */
+	if (adjusted_mode->crtc_hdisplay > 4096 ||
+	    adjusted_mode->crtc_hblank_start > 4096)
+		return -EINVAL;
+
+	pipe_config->has_pch_encoder = true;
+	pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
+
+	/* LPT FDI RX only supports 8bpc. */
+	if (HAS_PCH_LPT(dev_priv)) {
+		if (pipe_config->bw_constrained && pipe_config->pipe_bpp < 24) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "LPT only supports 24bpp\n");
+			return -EINVAL;
+		}
+
+		pipe_config->pipe_bpp = 24;
+	}
+
+	/* FDI must always be 2.7 GHz */
+	pipe_config->port_clock = 135000 * 2;
+
+	adjusted_mode->crtc_clock = lpt_iclkip(pipe_config);
+
+	return 0;
+}
+
+static bool ilk_crt_detect_hotplug(struct drm_connector *connector)
+{
+	struct drm_device *dev = connector->dev;
+	struct intel_crt *crt = intel_attached_crt(to_intel_connector(connector));
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	u32 adpa;
+	bool ret;
+
+	/* The first time through, trigger an explicit detection cycle */
+	if (crt->force_hotplug_required) {
+		bool turn_off_dac = HAS_PCH_SPLIT(dev_priv);
+		u32 save_adpa;
+
+		crt->force_hotplug_required = false;
+
+		save_adpa = adpa = intel_de_read(dev_priv, crt->adpa_reg);
+		drm_dbg_kms(&dev_priv->drm,
+			    "trigger hotplug detect cycle: adpa=0x%x\n", adpa);
+
+		adpa |= ADPA_CRT_HOTPLUG_FORCE_TRIGGER;
+		if (turn_off_dac)
+			adpa &= ~ADPA_DAC_ENABLE;
+
+		intel_de_write(dev_priv, crt->adpa_reg, adpa);
+
+		if (intel_de_wait_for_clear(dev_priv,
+					    crt->adpa_reg,
+					    ADPA_CRT_HOTPLUG_FORCE_TRIGGER,
+					    1000))
+			drm_dbg_kms(&dev_priv->drm,
+				    "timed out waiting for FORCE_TRIGGER");
+
+		if (turn_off_dac) {
+			intel_de_write(dev_priv, crt->adpa_reg, save_adpa);
+			intel_de_posting_read(dev_priv, crt->adpa_reg);
+		}
+	}
+
+	/* Check the status to see if both blue and green are on now */
+	adpa = intel_de_read(dev_priv, crt->adpa_reg);
+	if ((adpa & ADPA_CRT_HOTPLUG_MONITOR_MASK) != 0)
+		ret = true;
+	else
+		ret = false;
+	drm_dbg_kms(&dev_priv->drm, "ironlake hotplug adpa=0x%x, result %d\n",
+		    adpa, ret);
+
+	return ret;
+}
+
+static bool valleyview_crt_detect_hotplug(struct drm_connector *connector)
+{
+	struct drm_device *dev = connector->dev;
+	struct intel_crt *crt = intel_attached_crt(to_intel_connector(connector));
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	bool reenable_hpd;
+	u32 adpa;
+	bool ret;
+	u32 save_adpa;
+
+	/*
+	 * Doing a force trigger causes a hpd interrupt to get sent, which can
+	 * get us stuck in a loop if we're polling:
+	 *  - We enable power wells and reset the ADPA
+	 *  - output_poll_exec does force probe on VGA, triggering a hpd
+	 *  - HPD handler waits for poll to unlock dev->mode_config.mutex
+	 *  - output_poll_exec shuts off the ADPA, unlocks
+	 *    dev->mode_config.mutex
+	 *  - HPD handler runs, resets ADPA and brings us back to the start
+	 *
+	 * Just disable HPD interrupts here to prevent this
+	 */
+	reenable_hpd = intel_hpd_disable(dev_priv, crt->base.hpd_pin);
+
+	save_adpa = adpa = intel_de_read(dev_priv, crt->adpa_reg);
+	drm_dbg_kms(&dev_priv->drm,
+		    "trigger hotplug detect cycle: adpa=0x%x\n", adpa);
+
+	adpa |= ADPA_CRT_HOTPLUG_FORCE_TRIGGER;
+
+	intel_de_write(dev_priv, crt->adpa_reg, adpa);
+
+	if (intel_de_wait_for_clear(dev_priv, crt->adpa_reg,
+				    ADPA_CRT_HOTPLUG_FORCE_TRIGGER, 1000)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "timed out waiting for FORCE_TRIGGER");
+		intel_de_write(dev_priv, crt->adpa_reg, save_adpa);
+	}
+
+	/* Check the status to see if both blue and green are on now */
+	adpa = intel_de_read(dev_priv, crt->adpa_reg);
+	if ((adpa & ADPA_CRT_HOTPLUG_MONITOR_MASK) != 0)
+		ret = true;
+	else
+		ret = false;
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "valleyview hotplug adpa=0x%x, result %d\n", adpa, ret);
+
+	if (reenable_hpd)
+		intel_hpd_enable(dev_priv, crt->base.hpd_pin);
+
+	return ret;
+}
+
+static bool intel_crt_detect_hotplug(struct drm_connector *connector)
+{
+	struct drm_device *dev = connector->dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	u32 stat;
+	bool ret = false;
+	int i, tries = 0;
+
+	if (HAS_PCH_SPLIT(dev_priv))
+		return ilk_crt_detect_hotplug(connector);
+
+	if (IS_VALLEYVIEW(dev_priv))
+		return valleyview_crt_detect_hotplug(connector);
+
+	/*
+	 * On 4 series desktop, CRT detect sequence need to be done twice
+	 * to get a reliable result.
+	 */
+
+	if (IS_G45(dev_priv))
+		tries = 2;
+	else
+		tries = 1;
+
+	for (i = 0; i < tries ; i++) {
+		/* turn on the FORCE_DETECT */
+		i915_hotplug_interrupt_update(dev_priv,
+					      CRT_HOTPLUG_FORCE_DETECT,
+					      CRT_HOTPLUG_FORCE_DETECT);
+		/* wait for FORCE_DETECT to go off */
+		if (intel_de_wait_for_clear(dev_priv, PORT_HOTPLUG_EN,
+					    CRT_HOTPLUG_FORCE_DETECT, 1000))
+			drm_dbg_kms(&dev_priv->drm,
+				    "timed out waiting for FORCE_DETECT to go off");
+	}
+
+	stat = intel_de_read(dev_priv, PORT_HOTPLUG_STAT);
+	if ((stat & CRT_HOTPLUG_MONITOR_MASK) != CRT_HOTPLUG_MONITOR_NONE)
+		ret = true;
+
+	/* clear the interrupt we just generated, if any */
+	intel_de_write(dev_priv, PORT_HOTPLUG_STAT, CRT_HOTPLUG_INT_STATUS);
+
+	i915_hotplug_interrupt_update(dev_priv, CRT_HOTPLUG_FORCE_DETECT, 0);
+
+	return ret;
+}
+
+static struct edid *intel_crt_get_edid(struct drm_connector *connector,
+				struct i2c_adapter *i2c)
+{
+	struct edid *edid;
+
+	edid = drm_get_edid(connector, i2c);
+
+	if (!edid && !intel_gmbus_is_forced_bit(i2c)) {
+		drm_dbg_kms(connector->dev,
+			    "CRT GMBUS EDID read failed, retry using GPIO bit-banging\n");
+		intel_gmbus_force_bit(i2c, true);
+		edid = drm_get_edid(connector, i2c);
+		intel_gmbus_force_bit(i2c, false);
+	}
+
+	return edid;
+}
+
+/* local version of intel_ddc_get_modes() to use intel_crt_get_edid() */
+static int intel_crt_ddc_get_modes(struct drm_connector *connector,
+				struct i2c_adapter *adapter)
+{
+	struct edid *edid;
+	int ret;
+
+	edid = intel_crt_get_edid(connector, adapter);
+	if (!edid)
+		return 0;
+
+	ret = intel_connector_update_modes(connector, edid);
+	kfree(edid);
+
+	return ret;
+}
+
+static bool intel_crt_detect_ddc(struct drm_connector *connector)
+{
+	struct intel_crt *crt = intel_attached_crt(to_intel_connector(connector));
+	struct drm_i915_private *dev_priv = to_i915(crt->base.base.dev);
+	struct edid *edid;
+	struct i2c_adapter *i2c;
+	bool ret = false;
+
+	i2c = intel_gmbus_get_adapter(dev_priv, dev_priv->display.vbt.crt_ddc_pin);
+	edid = intel_crt_get_edid(connector, i2c);
+
+	if (edid) {
+		bool is_digital = edid->input & DRM_EDID_INPUT_DIGITAL;
+
+		/*
+		 * This may be a DVI-I connector with a shared DDC
+		 * link between analog and digital outputs, so we
+		 * have to check the EDID input spec of the attached device.
+		 */
+		if (!is_digital) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "CRT detected via DDC:0x50 [EDID]\n");
+			ret = true;
+		} else {
+			drm_dbg_kms(&dev_priv->drm,
+				    "CRT not detected via DDC:0x50 [EDID reports a digital panel]\n");
+		}
+	} else {
+		drm_dbg_kms(&dev_priv->drm,
+			    "CRT not detected via DDC:0x50 [no valid EDID found]\n");
+	}
+
+	kfree(edid);
+
+	return ret;
+}
+
+static enum drm_connector_status
+intel_crt_load_detect(struct intel_crt *crt, u32 pipe)
+{
+	struct drm_device *dev = crt->base.base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_uncore *uncore = &dev_priv->uncore;
+	u32 save_bclrpat;
+	u32 save_vtotal;
+	u32 vtotal, vactive;
+	u32 vsample;
+	u32 vblank, vblank_start, vblank_end;
+	u32 dsl;
+	i915_reg_t bclrpat_reg, vtotal_reg,
+		vblank_reg, vsync_reg, pipeconf_reg, pipe_dsl_reg;
+	u8 st00;
+	enum drm_connector_status status;
+
+	drm_dbg_kms(&dev_priv->drm, "starting load-detect on CRT\n");
+
+	bclrpat_reg = BCLRPAT(pipe);
+	vtotal_reg = VTOTAL(pipe);
+	vblank_reg = VBLANK(pipe);
+	vsync_reg = VSYNC(pipe);
+	pipeconf_reg = PIPECONF(pipe);
+	pipe_dsl_reg = PIPEDSL(pipe);
+
+	save_bclrpat = intel_uncore_read(uncore, bclrpat_reg);
+	save_vtotal = intel_uncore_read(uncore, vtotal_reg);
+	vblank = intel_uncore_read(uncore, vblank_reg);
+
+	vtotal = ((save_vtotal >> 16) & 0xfff) + 1;
+	vactive = (save_vtotal & 0x7ff) + 1;
+
+	vblank_start = (vblank & 0xfff) + 1;
+	vblank_end = ((vblank >> 16) & 0xfff) + 1;
+
+	/* Set the border color to purple. */
+	intel_uncore_write(uncore, bclrpat_reg, 0x500050);
+
+	if (DISPLAY_VER(dev_priv) != 2) {
+		u32 pipeconf = intel_uncore_read(uncore, pipeconf_reg);
+		intel_uncore_write(uncore,
+				   pipeconf_reg,
+				   pipeconf | PIPECONF_FORCE_BORDER);
+		intel_uncore_posting_read(uncore, pipeconf_reg);
+		/* Wait for next Vblank to substitue
+		 * border color for Color info */
+		intel_crtc_wait_for_next_vblank(intel_crtc_for_pipe(dev_priv, pipe));
+		st00 = intel_uncore_read8(uncore, _VGA_MSR_WRITE);
+		status = ((st00 & (1 << 4)) != 0) ?
+			connector_status_connected :
+			connector_status_disconnected;
+
+		intel_uncore_write(uncore, pipeconf_reg, pipeconf);
+	} else {
+		bool restore_vblank = false;
+		int count, detect;
+
+		/*
+		* If there isn't any border, add some.
+		* Yes, this will flicker
+		*/
+		if (vblank_start <= vactive && vblank_end >= vtotal) {
+			u32 vsync = intel_de_read(dev_priv, vsync_reg);
+			u32 vsync_start = (vsync & 0xffff) + 1;
+
+			vblank_start = vsync_start;
+			intel_uncore_write(uncore,
+					   vblank_reg,
+					   (vblank_start - 1) |
+					   ((vblank_end - 1) << 16));
+			restore_vblank = true;
+		}
+		/* sample in the vertical border, selecting the larger one */
+		if (vblank_start - vactive >= vtotal - vblank_end)
+			vsample = (vblank_start + vactive) >> 1;
+		else
+			vsample = (vtotal + vblank_end) >> 1;
+
+		/*
+		 * Wait for the border to be displayed
+		 */
+		while (intel_uncore_read(uncore, pipe_dsl_reg) >= vactive)
+			;
+		while ((dsl = intel_uncore_read(uncore, pipe_dsl_reg)) <=
+		       vsample)
+			;
+		/*
+		 * Watch ST00 for an entire scanline
+		 */
+		detect = 0;
+		count = 0;
+		do {
+			count++;
+			/* Read the ST00 VGA status register */
+			st00 = intel_uncore_read8(uncore, _VGA_MSR_WRITE);
+			if (st00 & (1 << 4))
+				detect++;
+		} while ((intel_uncore_read(uncore, pipe_dsl_reg) == dsl));
+
+		/* restore vblank if necessary */
+		if (restore_vblank)
+			intel_uncore_write(uncore, vblank_reg, vblank);
+		/*
+		 * If more than 3/4 of the scanline detected a monitor,
+		 * then it is assumed to be present. This works even on i830,
+		 * where there isn't any way to force the border color across
+		 * the screen
+		 */
+		status = detect * 4 > count * 3 ?
+			 connector_status_connected :
+			 connector_status_disconnected;
+	}
+
+	/* Restore previous settings */
+	intel_uncore_write(uncore, bclrpat_reg, save_bclrpat);
+
+	return status;
+}
+
+static int intel_spurious_crt_detect_dmi_callback(const struct dmi_system_id *id)
+{
+	DRM_DEBUG_DRIVER("Skipping CRT detection for %s\n", id->ident);
+	return 1;
+}
+
+static const struct dmi_system_id intel_spurious_crt_detect[] = {
+	{
+		.callback = intel_spurious_crt_detect_dmi_callback,
+		.ident = "ACER ZGB",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "ACER"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "ZGB"),
+		},
+	},
+	{
+		.callback = intel_spurious_crt_detect_dmi_callback,
+		.ident = "Intel DZ77BH-55K",
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "Intel Corporation"),
+			DMI_MATCH(DMI_BOARD_NAME, "DZ77BH-55K"),
+		},
+	},
+	{ }
+};
+
+static int
+intel_crt_detect(struct drm_connector *connector,
+		 struct drm_modeset_acquire_ctx *ctx,
+		 bool force)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->dev);
+	struct intel_crt *crt = intel_attached_crt(to_intel_connector(connector));
+	struct intel_encoder *intel_encoder = &crt->base;
+	intel_wakeref_t wakeref;
+	int status, ret;
+	struct intel_load_detect_pipe tmp;
+
+	drm_dbg_kms(&dev_priv->drm, "[CONNECTOR:%d:%s] force=%d\n",
+		    connector->base.id, connector->name,
+		    force);
+
+	if (!INTEL_DISPLAY_ENABLED(dev_priv))
+		return connector_status_disconnected;
+
+	if (dev_priv->params.load_detect_test) {
+		wakeref = intel_display_power_get(dev_priv,
+						  intel_encoder->power_domain);
+		goto load_detect;
+	}
+
+	/* Skip machines without VGA that falsely report hotplug events */
+	if (dmi_check_system(intel_spurious_crt_detect))
+		return connector_status_disconnected;
+
+	wakeref = intel_display_power_get(dev_priv,
+					  intel_encoder->power_domain);
+
+	if (I915_HAS_HOTPLUG(dev_priv)) {
+		/* We can not rely on the HPD pin always being correctly wired
+		 * up, for example many KVM do not pass it through, and so
+		 * only trust an assertion that the monitor is connected.
+		 */
+		if (intel_crt_detect_hotplug(connector)) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "CRT detected via hotplug\n");
+			status = connector_status_connected;
+			goto out;
+		} else
+			drm_dbg_kms(&dev_priv->drm,
+				    "CRT not detected via hotplug\n");
+	}
+
+	if (intel_crt_detect_ddc(connector)) {
+		status = connector_status_connected;
+		goto out;
+	}
+
+	/* Load detection is broken on HPD capable machines. Whoever wants a
+	 * broken monitor (without edid) to work behind a broken kvm (that fails
+	 * to have the right resistors for HP detection) needs to fix this up.
+	 * For now just bail out. */
+	if (I915_HAS_HOTPLUG(dev_priv)) {
+		status = connector_status_disconnected;
+		goto out;
+	}
+
+load_detect:
+	if (!force) {
+		status = connector->status;
+		goto out;
+	}
+
+	/* for pre-945g platforms use load detect */
+	ret = intel_get_load_detect_pipe(connector, &tmp, ctx);
+	if (ret > 0) {
+		if (intel_crt_detect_ddc(connector))
+			status = connector_status_connected;
+		else if (DISPLAY_VER(dev_priv) < 4)
+			status = intel_crt_load_detect(crt,
+				to_intel_crtc(connector->state->crtc)->pipe);
+		else if (dev_priv->params.load_detect_test)
+			status = connector_status_disconnected;
+		else
+			status = connector_status_unknown;
+		intel_release_load_detect_pipe(connector, &tmp, ctx);
+	} else if (ret == 0) {
+		status = connector_status_unknown;
+	} else {
+		status = ret;
+	}
+
+out:
+	intel_display_power_put(dev_priv, intel_encoder->power_domain, wakeref);
+
+	/*
+	 * Make sure the refs for power wells enabled during detect are
+	 * dropped to avoid a new detect cycle triggered by HPD polling.
+	 */
+	intel_display_power_flush_work(dev_priv);
+
+	return status;
+}
+
+static int intel_crt_get_modes(struct drm_connector *connector)
+{
+	struct drm_device *dev = connector->dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_crt *crt = intel_attached_crt(to_intel_connector(connector));
+	struct intel_encoder *intel_encoder = &crt->base;
+	intel_wakeref_t wakeref;
+	struct i2c_adapter *i2c;
+	int ret;
+
+	wakeref = intel_display_power_get(dev_priv,
+					  intel_encoder->power_domain);
+
+	i2c = intel_gmbus_get_adapter(dev_priv, dev_priv->display.vbt.crt_ddc_pin);
+	ret = intel_crt_ddc_get_modes(connector, i2c);
+	if (ret || !IS_G4X(dev_priv))
+		goto out;
+
+	/* Try to probe digital port for output in DVI-I -> VGA mode. */
+	i2c = intel_gmbus_get_adapter(dev_priv, GMBUS_PIN_DPB);
+	ret = intel_crt_ddc_get_modes(connector, i2c);
+
+out:
+	intel_display_power_put(dev_priv, intel_encoder->power_domain, wakeref);
+
+	return ret;
+}
+
+void intel_crt_reset(struct drm_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->dev);
+	struct intel_crt *crt = intel_encoder_to_crt(to_intel_encoder(encoder));
+
+	if (DISPLAY_VER(dev_priv) >= 5) {
+		u32 adpa;
+
+		adpa = intel_de_read(dev_priv, crt->adpa_reg);
+		adpa &= ~ADPA_CRT_HOTPLUG_MASK;
+		adpa |= ADPA_HOTPLUG_BITS;
+		intel_de_write(dev_priv, crt->adpa_reg, adpa);
+		intel_de_posting_read(dev_priv, crt->adpa_reg);
+
+		drm_dbg_kms(&dev_priv->drm, "crt adpa set to 0x%x\n", adpa);
+		crt->force_hotplug_required = true;
+	}
+
+}
+
+/*
+ * Routines for controlling stuff on the analog port
+ */
+
+static const struct drm_connector_funcs intel_crt_connector_funcs = {
+	.fill_modes = drm_helper_probe_single_connector_modes,
+	.late_register = intel_connector_register,
+	.early_unregister = intel_connector_unregister,
+	.destroy = intel_connector_destroy,
+	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+};
+
+static const struct drm_connector_helper_funcs intel_crt_connector_helper_funcs = {
+	.detect_ctx = intel_crt_detect,
+	.mode_valid = intel_crt_mode_valid,
+	.get_modes = intel_crt_get_modes,
+};
+
+static const struct drm_encoder_funcs intel_crt_enc_funcs = {
+	.reset = intel_crt_reset,
+	.destroy = intel_encoder_destroy,
+};
+
+void intel_crt_init(struct drm_i915_private *dev_priv)
+{
+	struct drm_connector *connector;
+	struct intel_crt *crt;
+	struct intel_connector *intel_connector;
+	i915_reg_t adpa_reg;
+	u32 adpa;
+
+	if (HAS_PCH_SPLIT(dev_priv))
+		adpa_reg = PCH_ADPA;
+	else if (IS_VALLEYVIEW(dev_priv))
+		adpa_reg = VLV_ADPA;
+	else
+		adpa_reg = ADPA;
+
+	adpa = intel_de_read(dev_priv, adpa_reg);
+	if ((adpa & ADPA_DAC_ENABLE) == 0) {
+		/*
+		 * On some machines (some IVB at least) CRT can be
+		 * fused off, but there's no known fuse bit to
+		 * indicate that. On these machine the ADPA register
+		 * works normally, except the DAC enable bit won't
+		 * take. So the only way to tell is attempt to enable
+		 * it and see what happens.
+		 */
+		intel_de_write(dev_priv, adpa_reg,
+			       adpa | ADPA_DAC_ENABLE | ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE);
+		if ((intel_de_read(dev_priv, adpa_reg) & ADPA_DAC_ENABLE) == 0)
+			return;
+		intel_de_write(dev_priv, adpa_reg, adpa);
+	}
+
+	crt = kzalloc(sizeof(struct intel_crt), GFP_KERNEL);
+	if (!crt)
+		return;
+
+	intel_connector = intel_connector_alloc();
+	if (!intel_connector) {
+		kfree(crt);
+		return;
+	}
+
+	connector = &intel_connector->base;
+	crt->connector = intel_connector;
+	drm_connector_init(&dev_priv->drm, &intel_connector->base,
+			   &intel_crt_connector_funcs, DRM_MODE_CONNECTOR_VGA);
+
+	drm_encoder_init(&dev_priv->drm, &crt->base.base, &intel_crt_enc_funcs,
+			 DRM_MODE_ENCODER_DAC, "CRT");
+
+	intel_connector_attach_encoder(intel_connector, &crt->base);
+
+	crt->base.type = INTEL_OUTPUT_ANALOG;
+	crt->base.cloneable = (1 << INTEL_OUTPUT_DVO) | (1 << INTEL_OUTPUT_HDMI);
+	if (IS_I830(dev_priv))
+		crt->base.pipe_mask = BIT(PIPE_A);
+	else
+		crt->base.pipe_mask = ~0;
+
+	if (DISPLAY_VER(dev_priv) == 2)
+		connector->interlace_allowed = 0;
+	else
+		connector->interlace_allowed = 1;
+	connector->doublescan_allowed = 0;
+
+	crt->adpa_reg = adpa_reg;
+
+	crt->base.power_domain = POWER_DOMAIN_PORT_CRT;
+
+	if (I915_HAS_HOTPLUG(dev_priv) &&
+	    !dmi_check_system(intel_spurious_crt_detect)) {
+		crt->base.hpd_pin = HPD_CRT;
+		crt->base.hotplug = intel_encoder_hotplug;
+		intel_connector->polled = DRM_CONNECTOR_POLL_HPD;
+	} else {
+		intel_connector->polled = DRM_CONNECTOR_POLL_CONNECT;
+	}
+
+	if (HAS_DDI(dev_priv)) {
+		crt->base.port = PORT_E;
+		crt->base.get_config = hsw_crt_get_config;
+		crt->base.get_hw_state = intel_ddi_get_hw_state;
+		crt->base.compute_config = hsw_crt_compute_config;
+		crt->base.pre_pll_enable = hsw_pre_pll_enable_crt;
+		crt->base.pre_enable = hsw_pre_enable_crt;
+		crt->base.enable = hsw_enable_crt;
+		crt->base.disable = hsw_disable_crt;
+		crt->base.post_disable = hsw_post_disable_crt;
+		crt->base.enable_clock = hsw_ddi_enable_clock;
+		crt->base.disable_clock = hsw_ddi_disable_clock;
+		crt->base.is_clock_enabled = hsw_ddi_is_clock_enabled;
+
+		intel_ddi_buf_trans_init(&crt->base);
+	} else {
+		if (HAS_PCH_SPLIT(dev_priv)) {
+			crt->base.compute_config = pch_crt_compute_config;
+			crt->base.disable = pch_disable_crt;
+			crt->base.post_disable = pch_post_disable_crt;
+		} else {
+			crt->base.compute_config = intel_crt_compute_config;
+			crt->base.disable = intel_disable_crt;
+		}
+		crt->base.port = PORT_NONE;
+		crt->base.get_config = intel_crt_get_config;
+		crt->base.get_hw_state = intel_crt_get_hw_state;
+		crt->base.enable = intel_enable_crt;
+	}
+	intel_connector->get_hw_state = intel_connector_get_hw_state;
+
+	drm_connector_helper_add(connector, &intel_crt_connector_helper_funcs);
+
+	/*
+	 * TODO: find a proper way to discover whether we need to set the the
+	 * polarity and link reversal bits or not, instead of relying on the
+	 * BIOS.
+	 */
+	if (HAS_PCH_LPT(dev_priv)) {
+		u32 fdi_config = FDI_RX_POLARITY_REVERSED_LPT |
+				 FDI_RX_LINK_REVERSAL_OVERRIDE;
+
+		dev_priv->display.fdi.rx_config = intel_de_read(dev_priv,
+								FDI_RX_CTL(PIPE_A)) & fdi_config;
+	}
+
+	intel_crt_reset(&crt->base.base);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_crt.h b/drivers/gpu/drm/i915/display/intel_crt.h
new file mode 100644
index 000000000..c6071efd9
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_crt.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_CRT_H__
+#define __INTEL_CRT_H__
+
+#include "i915_reg_defs.h"
+
+enum pipe;
+struct drm_encoder;
+struct drm_i915_private;
+
+bool intel_crt_port_enabled(struct drm_i915_private *dev_priv,
+			    i915_reg_t adpa_reg, enum pipe *pipe);
+void intel_crt_init(struct drm_i915_private *dev_priv);
+void intel_crt_reset(struct drm_encoder *encoder);
+
+#endif /* __INTEL_CRT_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_crtc.c b/drivers/gpu/drm/i915/display/intel_crtc.c
new file mode 100644
index 000000000..6792a9056
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_crtc.c
@@ -0,0 +1,705 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+#include <linux/kernel.h>
+#include <linux/pm_qos.h>
+#include <linux/slab.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_fourcc.h>
+#include <drm/drm_plane.h>
+#include <drm/drm_vblank_work.h>
+
+#include "i915_irq.h"
+#include "i915_vgpu.h"
+#include "i9xx_plane.h"
+#include "icl_dsi.h"
+#include "intel_atomic.h"
+#include "intel_atomic_plane.h"
+#include "intel_color.h"
+#include "intel_crtc.h"
+#include "intel_cursor.h"
+#include "intel_display_debugfs.h"
+#include "intel_display_trace.h"
+#include "intel_display_types.h"
+#include "intel_drrs.h"
+#include "intel_dsi.h"
+#include "intel_pipe_crc.h"
+#include "intel_psr.h"
+#include "intel_sprite.h"
+#include "intel_vrr.h"
+#include "skl_universal_plane.h"
+
+static void assert_vblank_disabled(struct drm_crtc *crtc)
+{
+	if (I915_STATE_WARN_ON(drm_crtc_vblank_get(crtc) == 0))
+		drm_crtc_vblank_put(crtc);
+}
+
+struct intel_crtc *intel_first_crtc(struct drm_i915_private *i915)
+{
+	return to_intel_crtc(drm_crtc_from_index(&i915->drm, 0));
+}
+
+struct intel_crtc *intel_crtc_for_pipe(struct drm_i915_private *i915,
+				       enum pipe pipe)
+{
+	struct intel_crtc *crtc;
+
+	for_each_intel_crtc(&i915->drm, crtc) {
+		if (crtc->pipe == pipe)
+			return crtc;
+	}
+
+	return NULL;
+}
+
+void intel_crtc_wait_for_next_vblank(struct intel_crtc *crtc)
+{
+	drm_crtc_wait_one_vblank(&crtc->base);
+}
+
+void intel_wait_for_vblank_if_active(struct drm_i915_private *i915,
+				     enum pipe pipe)
+{
+	struct intel_crtc *crtc = intel_crtc_for_pipe(i915, pipe);
+
+	if (crtc->active)
+		intel_crtc_wait_for_next_vblank(crtc);
+}
+
+u32 intel_crtc_get_vblank_counter(struct intel_crtc *crtc)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_vblank_crtc *vblank = &dev->vblank[drm_crtc_index(&crtc->base)];
+
+	if (!crtc->active)
+		return 0;
+
+	if (!vblank->max_vblank_count)
+		return (u32)drm_crtc_accurate_vblank_count(&crtc->base);
+
+	return crtc->base.funcs->get_vblank_counter(&crtc->base);
+}
+
+u32 intel_crtc_max_vblank_count(const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+
+	/*
+	 * From Gen 11, In case of dsi cmd mode, frame counter wouldnt
+	 * have updated at the beginning of TE, if we want to use
+	 * the hw counter, then we would find it updated in only
+	 * the next TE, hence switching to sw counter.
+	 */
+	if (crtc_state->mode_flags & (I915_MODE_FLAG_DSI_USE_TE0 |
+				      I915_MODE_FLAG_DSI_USE_TE1))
+		return 0;
+
+	/*
+	 * On i965gm the hardware frame counter reads
+	 * zero when the TV encoder is enabled :(
+	 */
+	if (IS_I965GM(dev_priv) &&
+	    (crtc_state->output_types & BIT(INTEL_OUTPUT_TVOUT)))
+		return 0;
+
+	if (DISPLAY_VER(dev_priv) >= 5 || IS_G4X(dev_priv))
+		return 0xffffffff; /* full 32 bit counter */
+	else if (DISPLAY_VER(dev_priv) >= 3)
+		return 0xffffff; /* only 24 bits of frame count */
+	else
+		return 0; /* Gen2 doesn't have a hardware frame counter */
+}
+
+void intel_crtc_vblank_on(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+
+	assert_vblank_disabled(&crtc->base);
+	drm_crtc_set_max_vblank_count(&crtc->base,
+				      intel_crtc_max_vblank_count(crtc_state));
+	drm_crtc_vblank_on(&crtc->base);
+
+	/*
+	 * Should really happen exactly when we enable the pipe
+	 * but we want the frame counters in the trace, and that
+	 * requires vblank support on some platforms/outputs.
+	 */
+	trace_intel_pipe_enable(crtc);
+}
+
+void intel_crtc_vblank_off(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+
+	/*
+	 * Should really happen exactly when we disable the pipe
+	 * but we want the frame counters in the trace, and that
+	 * requires vblank support on some platforms/outputs.
+	 */
+	trace_intel_pipe_disable(crtc);
+
+	drm_crtc_vblank_off(&crtc->base);
+	assert_vblank_disabled(&crtc->base);
+}
+
+struct intel_crtc_state *intel_crtc_state_alloc(struct intel_crtc *crtc)
+{
+	struct intel_crtc_state *crtc_state;
+
+	crtc_state = kmalloc(sizeof(*crtc_state), GFP_KERNEL);
+
+	if (crtc_state)
+		intel_crtc_state_reset(crtc_state, crtc);
+
+	return crtc_state;
+}
+
+void intel_crtc_state_reset(struct intel_crtc_state *crtc_state,
+			    struct intel_crtc *crtc)
+{
+	memset(crtc_state, 0, sizeof(*crtc_state));
+
+	__drm_atomic_helper_crtc_state_reset(&crtc_state->uapi, &crtc->base);
+
+	crtc_state->cpu_transcoder = INVALID_TRANSCODER;
+	crtc_state->master_transcoder = INVALID_TRANSCODER;
+	crtc_state->hsw_workaround_pipe = INVALID_PIPE;
+	crtc_state->scaler_state.scaler_id = -1;
+	crtc_state->mst_master_transcoder = INVALID_TRANSCODER;
+}
+
+static struct intel_crtc *intel_crtc_alloc(void)
+{
+	struct intel_crtc_state *crtc_state;
+	struct intel_crtc *crtc;
+
+	crtc = kzalloc(sizeof(*crtc), GFP_KERNEL);
+	if (!crtc)
+		return ERR_PTR(-ENOMEM);
+
+	crtc_state = intel_crtc_state_alloc(crtc);
+	if (!crtc_state) {
+		kfree(crtc);
+		return ERR_PTR(-ENOMEM);
+	}
+
+	crtc->base.state = &crtc_state->uapi;
+	crtc->config = crtc_state;
+
+	return crtc;
+}
+
+static void intel_crtc_free(struct intel_crtc *crtc)
+{
+	intel_crtc_destroy_state(&crtc->base, crtc->base.state);
+	kfree(crtc);
+}
+
+static void intel_crtc_destroy(struct drm_crtc *_crtc)
+{
+	struct intel_crtc *crtc = to_intel_crtc(_crtc);
+
+	cpu_latency_qos_remove_request(&crtc->vblank_pm_qos);
+
+	drm_crtc_cleanup(&crtc->base);
+	kfree(crtc);
+}
+
+static int intel_crtc_late_register(struct drm_crtc *crtc)
+{
+	intel_crtc_debugfs_add(crtc);
+	return 0;
+}
+
+#define INTEL_CRTC_FUNCS \
+	.set_config = drm_atomic_helper_set_config, \
+	.destroy = intel_crtc_destroy, \
+	.page_flip = drm_atomic_helper_page_flip, \
+	.atomic_duplicate_state = intel_crtc_duplicate_state, \
+	.atomic_destroy_state = intel_crtc_destroy_state, \
+	.set_crc_source = intel_crtc_set_crc_source, \
+	.verify_crc_source = intel_crtc_verify_crc_source, \
+	.get_crc_sources = intel_crtc_get_crc_sources, \
+	.late_register = intel_crtc_late_register
+
+static const struct drm_crtc_funcs bdw_crtc_funcs = {
+	INTEL_CRTC_FUNCS,
+
+	.get_vblank_counter = g4x_get_vblank_counter,
+	.enable_vblank = bdw_enable_vblank,
+	.disable_vblank = bdw_disable_vblank,
+	.get_vblank_timestamp = intel_crtc_get_vblank_timestamp,
+};
+
+static const struct drm_crtc_funcs ilk_crtc_funcs = {
+	INTEL_CRTC_FUNCS,
+
+	.get_vblank_counter = g4x_get_vblank_counter,
+	.enable_vblank = ilk_enable_vblank,
+	.disable_vblank = ilk_disable_vblank,
+	.get_vblank_timestamp = intel_crtc_get_vblank_timestamp,
+};
+
+static const struct drm_crtc_funcs g4x_crtc_funcs = {
+	INTEL_CRTC_FUNCS,
+
+	.get_vblank_counter = g4x_get_vblank_counter,
+	.enable_vblank = i965_enable_vblank,
+	.disable_vblank = i965_disable_vblank,
+	.get_vblank_timestamp = intel_crtc_get_vblank_timestamp,
+};
+
+static const struct drm_crtc_funcs i965_crtc_funcs = {
+	INTEL_CRTC_FUNCS,
+
+	.get_vblank_counter = i915_get_vblank_counter,
+	.enable_vblank = i965_enable_vblank,
+	.disable_vblank = i965_disable_vblank,
+	.get_vblank_timestamp = intel_crtc_get_vblank_timestamp,
+};
+
+static const struct drm_crtc_funcs i915gm_crtc_funcs = {
+	INTEL_CRTC_FUNCS,
+
+	.get_vblank_counter = i915_get_vblank_counter,
+	.enable_vblank = i915gm_enable_vblank,
+	.disable_vblank = i915gm_disable_vblank,
+	.get_vblank_timestamp = intel_crtc_get_vblank_timestamp,
+};
+
+static const struct drm_crtc_funcs i915_crtc_funcs = {
+	INTEL_CRTC_FUNCS,
+
+	.get_vblank_counter = i915_get_vblank_counter,
+	.enable_vblank = i8xx_enable_vblank,
+	.disable_vblank = i8xx_disable_vblank,
+	.get_vblank_timestamp = intel_crtc_get_vblank_timestamp,
+};
+
+static const struct drm_crtc_funcs i8xx_crtc_funcs = {
+	INTEL_CRTC_FUNCS,
+
+	/* no hw vblank counter */
+	.enable_vblank = i8xx_enable_vblank,
+	.disable_vblank = i8xx_disable_vblank,
+	.get_vblank_timestamp = intel_crtc_get_vblank_timestamp,
+};
+
+int intel_crtc_init(struct drm_i915_private *dev_priv, enum pipe pipe)
+{
+	struct intel_plane *primary, *cursor;
+	const struct drm_crtc_funcs *funcs;
+	struct intel_crtc *crtc;
+	int sprite, ret;
+
+	crtc = intel_crtc_alloc();
+	if (IS_ERR(crtc))
+		return PTR_ERR(crtc);
+
+	crtc->pipe = pipe;
+	crtc->num_scalers = RUNTIME_INFO(dev_priv)->num_scalers[pipe];
+
+	if (DISPLAY_VER(dev_priv) >= 9)
+		primary = skl_universal_plane_create(dev_priv, pipe,
+						     PLANE_PRIMARY);
+	else
+		primary = intel_primary_plane_create(dev_priv, pipe);
+	if (IS_ERR(primary)) {
+		ret = PTR_ERR(primary);
+		goto fail;
+	}
+	crtc->plane_ids_mask |= BIT(primary->id);
+
+	for_each_sprite(dev_priv, pipe, sprite) {
+		struct intel_plane *plane;
+
+		if (DISPLAY_VER(dev_priv) >= 9)
+			plane = skl_universal_plane_create(dev_priv, pipe,
+							   PLANE_SPRITE0 + sprite);
+		else
+			plane = intel_sprite_plane_create(dev_priv, pipe, sprite);
+		if (IS_ERR(plane)) {
+			ret = PTR_ERR(plane);
+			goto fail;
+		}
+		crtc->plane_ids_mask |= BIT(plane->id);
+	}
+
+	cursor = intel_cursor_plane_create(dev_priv, pipe);
+	if (IS_ERR(cursor)) {
+		ret = PTR_ERR(cursor);
+		goto fail;
+	}
+	crtc->plane_ids_mask |= BIT(cursor->id);
+
+	if (HAS_GMCH(dev_priv)) {
+		if (IS_CHERRYVIEW(dev_priv) ||
+		    IS_VALLEYVIEW(dev_priv) || IS_G4X(dev_priv))
+			funcs = &g4x_crtc_funcs;
+		else if (DISPLAY_VER(dev_priv) == 4)
+			funcs = &i965_crtc_funcs;
+		else if (IS_I945GM(dev_priv) || IS_I915GM(dev_priv))
+			funcs = &i915gm_crtc_funcs;
+		else if (DISPLAY_VER(dev_priv) == 3)
+			funcs = &i915_crtc_funcs;
+		else
+			funcs = &i8xx_crtc_funcs;
+	} else {
+		if (DISPLAY_VER(dev_priv) >= 8)
+			funcs = &bdw_crtc_funcs;
+		else
+			funcs = &ilk_crtc_funcs;
+	}
+
+	ret = drm_crtc_init_with_planes(&dev_priv->drm, &crtc->base,
+					&primary->base, &cursor->base,
+					funcs, "pipe %c", pipe_name(pipe));
+	if (ret)
+		goto fail;
+
+	if (DISPLAY_VER(dev_priv) >= 11)
+		drm_crtc_create_scaling_filter_property(&crtc->base,
+						BIT(DRM_SCALING_FILTER_DEFAULT) |
+						BIT(DRM_SCALING_FILTER_NEAREST_NEIGHBOR));
+
+	intel_color_init(crtc);
+
+	intel_crtc_drrs_init(crtc);
+	intel_crtc_crc_init(crtc);
+
+	cpu_latency_qos_add_request(&crtc->vblank_pm_qos, PM_QOS_DEFAULT_VALUE);
+
+	drm_WARN_ON(&dev_priv->drm, drm_crtc_index(&crtc->base) != crtc->pipe);
+
+	return 0;
+
+fail:
+	intel_crtc_free(crtc);
+
+	return ret;
+}
+
+static bool intel_crtc_needs_vblank_work(const struct intel_crtc_state *crtc_state)
+{
+	return crtc_state->hw.active &&
+		!intel_crtc_needs_modeset(crtc_state) &&
+		!crtc_state->preload_luts &&
+		(crtc_state->uapi.color_mgmt_changed ||
+		 crtc_state->update_pipe);
+}
+
+static void intel_crtc_vblank_work(struct kthread_work *base)
+{
+	struct drm_vblank_work *work = to_drm_vblank_work(base);
+	struct intel_crtc_state *crtc_state =
+		container_of(work, typeof(*crtc_state), vblank_work);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+
+	trace_intel_crtc_vblank_work_start(crtc);
+
+	intel_color_load_luts(crtc_state);
+
+	if (crtc_state->uapi.event) {
+		spin_lock_irq(&crtc->base.dev->event_lock);
+		drm_crtc_send_vblank_event(&crtc->base, crtc_state->uapi.event);
+		crtc_state->uapi.event = NULL;
+		spin_unlock_irq(&crtc->base.dev->event_lock);
+	}
+
+	trace_intel_crtc_vblank_work_end(crtc);
+}
+
+static void intel_crtc_vblank_work_init(struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+
+	drm_vblank_work_init(&crtc_state->vblank_work, &crtc->base,
+			     intel_crtc_vblank_work);
+	/*
+	 * Interrupt latency is critical for getting the vblank
+	 * work executed as early as possible during the vblank.
+	 */
+	cpu_latency_qos_update_request(&crtc->vblank_pm_qos, 0);
+}
+
+void intel_wait_for_vblank_workers(struct intel_atomic_state *state)
+{
+	struct intel_crtc_state *crtc_state;
+	struct intel_crtc *crtc;
+	int i;
+
+	for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) {
+		if (!intel_crtc_needs_vblank_work(crtc_state))
+			continue;
+
+		drm_vblank_work_flush(&crtc_state->vblank_work);
+		cpu_latency_qos_update_request(&crtc->vblank_pm_qos,
+					       PM_QOS_DEFAULT_VALUE);
+	}
+}
+
+int intel_usecs_to_scanlines(const struct drm_display_mode *adjusted_mode,
+			     int usecs)
+{
+	/* paranoia */
+	if (!adjusted_mode->crtc_htotal)
+		return 1;
+
+	return DIV_ROUND_UP(usecs * adjusted_mode->crtc_clock,
+			    1000 * adjusted_mode->crtc_htotal);
+}
+
+static int intel_mode_vblank_start(const struct drm_display_mode *mode)
+{
+	int vblank_start = mode->crtc_vblank_start;
+
+	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
+		vblank_start = DIV_ROUND_UP(vblank_start, 2);
+
+	return vblank_start;
+}
+
+/**
+ * intel_pipe_update_start() - start update of a set of display registers
+ * @new_crtc_state: the new crtc state
+ *
+ * Mark the start of an update to pipe registers that should be updated
+ * atomically regarding vblank. If the next vblank will happens within
+ * the next 100 us, this function waits until the vblank passes.
+ *
+ * After a successful call to this function, interrupts will be disabled
+ * until a subsequent call to intel_pipe_update_end(). That is done to
+ * avoid random delays.
+ */
+void intel_pipe_update_start(struct intel_crtc_state *new_crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	const struct drm_display_mode *adjusted_mode = &new_crtc_state->hw.adjusted_mode;
+	long timeout = msecs_to_jiffies_timeout(1);
+	int scanline, min, max, vblank_start;
+	wait_queue_head_t *wq = drm_crtc_vblank_waitqueue(&crtc->base);
+	bool need_vlv_dsi_wa = (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
+		intel_crtc_has_type(new_crtc_state, INTEL_OUTPUT_DSI);
+	DEFINE_WAIT(wait);
+
+	intel_psr_lock(new_crtc_state);
+
+	if (new_crtc_state->do_async_flip)
+		return;
+
+	if (intel_crtc_needs_vblank_work(new_crtc_state))
+		intel_crtc_vblank_work_init(new_crtc_state);
+
+	if (new_crtc_state->vrr.enable) {
+		if (intel_vrr_is_push_sent(new_crtc_state))
+			vblank_start = intel_vrr_vmin_vblank_start(new_crtc_state);
+		else
+			vblank_start = intel_vrr_vmax_vblank_start(new_crtc_state);
+	} else {
+		vblank_start = intel_mode_vblank_start(adjusted_mode);
+	}
+
+	/* FIXME needs to be calibrated sensibly */
+	min = vblank_start - intel_usecs_to_scanlines(adjusted_mode,
+						      VBLANK_EVASION_TIME_US);
+	max = vblank_start - 1;
+
+	if (min <= 0 || max <= 0)
+		goto irq_disable;
+
+	if (drm_WARN_ON(&dev_priv->drm, drm_crtc_vblank_get(&crtc->base)))
+		goto irq_disable;
+
+	/*
+	 * Wait for psr to idle out after enabling the VBL interrupts
+	 * VBL interrupts will start the PSR exit and prevent a PSR
+	 * re-entry as well.
+	 */
+	intel_psr_wait_for_idle_locked(new_crtc_state);
+
+	local_irq_disable();
+
+	crtc->debug.min_vbl = min;
+	crtc->debug.max_vbl = max;
+	trace_intel_pipe_update_start(crtc);
+
+	for (;;) {
+		/*
+		 * prepare_to_wait() has a memory barrier, which guarantees
+		 * other CPUs can see the task state update by the time we
+		 * read the scanline.
+		 */
+		prepare_to_wait(wq, &wait, TASK_UNINTERRUPTIBLE);
+
+		scanline = intel_get_crtc_scanline(crtc);
+		if (scanline < min || scanline > max)
+			break;
+
+		if (!timeout) {
+			drm_err(&dev_priv->drm,
+				"Potential atomic update failure on pipe %c\n",
+				pipe_name(crtc->pipe));
+			break;
+		}
+
+		local_irq_enable();
+
+		timeout = schedule_timeout(timeout);
+
+		local_irq_disable();
+	}
+
+	finish_wait(wq, &wait);
+
+	drm_crtc_vblank_put(&crtc->base);
+
+	/*
+	 * On VLV/CHV DSI the scanline counter would appear to
+	 * increment approx. 1/3 of a scanline before start of vblank.
+	 * The registers still get latched at start of vblank however.
+	 * This means we must not write any registers on the first
+	 * line of vblank (since not the whole line is actually in
+	 * vblank). And unfortunately we can't use the interrupt to
+	 * wait here since it will fire too soon. We could use the
+	 * frame start interrupt instead since it will fire after the
+	 * critical scanline, but that would require more changes
+	 * in the interrupt code. So for now we'll just do the nasty
+	 * thing and poll for the bad scanline to pass us by.
+	 *
+	 * FIXME figure out if BXT+ DSI suffers from this as well
+	 */
+	while (need_vlv_dsi_wa && scanline == vblank_start)
+		scanline = intel_get_crtc_scanline(crtc);
+
+	crtc->debug.scanline_start = scanline;
+	crtc->debug.start_vbl_time = ktime_get();
+	crtc->debug.start_vbl_count = intel_crtc_get_vblank_counter(crtc);
+
+	trace_intel_pipe_update_vblank_evaded(crtc);
+	return;
+
+irq_disable:
+	local_irq_disable();
+}
+
+#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_VBLANK_EVADE)
+static void dbg_vblank_evade(struct intel_crtc *crtc, ktime_t end)
+{
+	u64 delta = ktime_to_ns(ktime_sub(end, crtc->debug.start_vbl_time));
+	unsigned int h;
+
+	h = ilog2(delta >> 9);
+	if (h >= ARRAY_SIZE(crtc->debug.vbl.times))
+		h = ARRAY_SIZE(crtc->debug.vbl.times) - 1;
+	crtc->debug.vbl.times[h]++;
+
+	crtc->debug.vbl.sum += delta;
+	if (!crtc->debug.vbl.min || delta < crtc->debug.vbl.min)
+		crtc->debug.vbl.min = delta;
+	if (delta > crtc->debug.vbl.max)
+		crtc->debug.vbl.max = delta;
+
+	if (delta > 1000 * VBLANK_EVASION_TIME_US) {
+		drm_dbg_kms(crtc->base.dev,
+			    "Atomic update on pipe (%c) took %lld us, max time under evasion is %u us\n",
+			    pipe_name(crtc->pipe),
+			    div_u64(delta, 1000),
+			    VBLANK_EVASION_TIME_US);
+		crtc->debug.vbl.over++;
+	}
+}
+#else
+static void dbg_vblank_evade(struct intel_crtc *crtc, ktime_t end) {}
+#endif
+
+/**
+ * intel_pipe_update_end() - end update of a set of display registers
+ * @new_crtc_state: the new crtc state
+ *
+ * Mark the end of an update started with intel_pipe_update_start(). This
+ * re-enables interrupts and verifies the update was actually completed
+ * before a vblank.
+ */
+void intel_pipe_update_end(struct intel_crtc_state *new_crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->uapi.crtc);
+	enum pipe pipe = crtc->pipe;
+	int scanline_end = intel_get_crtc_scanline(crtc);
+	u32 end_vbl_count = intel_crtc_get_vblank_counter(crtc);
+	ktime_t end_vbl_time = ktime_get();
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+
+	intel_psr_unlock(new_crtc_state);
+
+	if (new_crtc_state->do_async_flip)
+		return;
+
+	trace_intel_pipe_update_end(crtc, end_vbl_count, scanline_end);
+
+	/*
+	 * Incase of mipi dsi command mode, we need to set frame update
+	 * request for every commit.
+	 */
+	if (DISPLAY_VER(dev_priv) >= 11 &&
+	    intel_crtc_has_type(new_crtc_state, INTEL_OUTPUT_DSI))
+		icl_dsi_frame_update(new_crtc_state);
+
+	/* We're still in the vblank-evade critical section, this can't race.
+	 * Would be slightly nice to just grab the vblank count and arm the
+	 * event outside of the critical section - the spinlock might spin for a
+	 * while ... */
+	if (intel_crtc_needs_vblank_work(new_crtc_state)) {
+		drm_vblank_work_schedule(&new_crtc_state->vblank_work,
+					 drm_crtc_accurate_vblank_count(&crtc->base) + 1,
+					 false);
+	} else if (new_crtc_state->uapi.event) {
+		drm_WARN_ON(&dev_priv->drm,
+			    drm_crtc_vblank_get(&crtc->base) != 0);
+
+		spin_lock(&crtc->base.dev->event_lock);
+		drm_crtc_arm_vblank_event(&crtc->base,
+					  new_crtc_state->uapi.event);
+		spin_unlock(&crtc->base.dev->event_lock);
+
+		new_crtc_state->uapi.event = NULL;
+	}
+
+	/*
+	 * Send VRR Push to terminate Vblank. If we are already in vblank
+	 * this has to be done _after_ sampling the frame counter, as
+	 * otherwise the push would immediately terminate the vblank and
+	 * the sampled frame counter would correspond to the next frame
+	 * instead of the current frame.
+	 *
+	 * There is a tiny race here (iff vblank evasion failed us) where
+	 * we might sample the frame counter just before vmax vblank start
+	 * but the push would be sent just after it. That would cause the
+	 * push to affect the next frame instead of the current frame,
+	 * which would cause the next frame to terminate already at vmin
+	 * vblank start instead of vmax vblank start.
+	 */
+	intel_vrr_send_push(new_crtc_state);
+
+	local_irq_enable();
+
+	if (intel_vgpu_active(dev_priv))
+		return;
+
+	if (crtc->debug.start_vbl_count &&
+	    crtc->debug.start_vbl_count != end_vbl_count) {
+		drm_err(&dev_priv->drm,
+			"Atomic update failure on pipe %c (start=%u end=%u) time %lld us, min %d, max %d, scanline start %d, end %d\n",
+			pipe_name(pipe), crtc->debug.start_vbl_count,
+			end_vbl_count,
+			ktime_us_delta(end_vbl_time,
+				       crtc->debug.start_vbl_time),
+			crtc->debug.min_vbl, crtc->debug.max_vbl,
+			crtc->debug.scanline_start, scanline_end);
+	}
+
+	dbg_vblank_evade(crtc, end_vbl_time);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_crtc.h b/drivers/gpu/drm/i915/display/intel_crtc.h
new file mode 100644
index 000000000..73077137f
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_crtc.h
@@ -0,0 +1,39 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#ifndef _INTEL_CRTC_H_
+#define _INTEL_CRTC_H_
+
+#include <linux/types.h>
+
+enum i9xx_plane_id;
+enum pipe;
+struct drm_display_mode;
+struct drm_i915_private;
+struct intel_atomic_state;
+struct intel_crtc;
+struct intel_crtc_state;
+
+int intel_usecs_to_scanlines(const struct drm_display_mode *adjusted_mode,
+			     int usecs);
+u32 intel_crtc_max_vblank_count(const struct intel_crtc_state *crtc_state);
+int intel_crtc_init(struct drm_i915_private *dev_priv, enum pipe pipe);
+struct intel_crtc_state *intel_crtc_state_alloc(struct intel_crtc *crtc);
+void intel_crtc_state_reset(struct intel_crtc_state *crtc_state,
+			    struct intel_crtc *crtc);
+u32 intel_crtc_get_vblank_counter(struct intel_crtc *crtc);
+void intel_crtc_vblank_on(const struct intel_crtc_state *crtc_state);
+void intel_crtc_vblank_off(const struct intel_crtc_state *crtc_state);
+void intel_pipe_update_start(struct intel_crtc_state *new_crtc_state);
+void intel_pipe_update_end(struct intel_crtc_state *new_crtc_state);
+void intel_wait_for_vblank_workers(struct intel_atomic_state *state);
+struct intel_crtc *intel_first_crtc(struct drm_i915_private *i915);
+struct intel_crtc *intel_crtc_for_pipe(struct drm_i915_private *i915,
+				       enum pipe pipe);
+void intel_wait_for_vblank_if_active(struct drm_i915_private *i915,
+				     enum pipe pipe);
+void intel_crtc_wait_for_next_vblank(struct intel_crtc *crtc);
+
+#endif
diff --git a/drivers/gpu/drm/i915/display/intel_crtc_state_dump.c b/drivers/gpu/drm/i915/display/intel_crtc_state_dump.c
new file mode 100644
index 000000000..e9212f69c
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_crtc_state_dump.c
@@ -0,0 +1,315 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#include "i915_drv.h"
+#include "intel_crtc_state_dump.h"
+#include "intel_display_types.h"
+#include "intel_hdmi.h"
+#include "intel_vrr.h"
+
+static void intel_dump_crtc_timings(struct drm_i915_private *i915,
+				    const struct drm_display_mode *mode)
+{
+	drm_dbg_kms(&i915->drm, "crtc timings: %d %d %d %d %d %d %d %d %d, "
+		    "type: 0x%x flags: 0x%x\n",
+		    mode->crtc_clock,
+		    mode->crtc_hdisplay, mode->crtc_hsync_start,
+		    mode->crtc_hsync_end, mode->crtc_htotal,
+		    mode->crtc_vdisplay, mode->crtc_vsync_start,
+		    mode->crtc_vsync_end, mode->crtc_vtotal,
+		    mode->type, mode->flags);
+}
+
+static void
+intel_dump_m_n_config(const struct intel_crtc_state *pipe_config,
+		      const char *id, unsigned int lane_count,
+		      const struct intel_link_m_n *m_n)
+{
+	struct drm_i915_private *i915 = to_i915(pipe_config->uapi.crtc->dev);
+
+	drm_dbg_kms(&i915->drm,
+		    "%s: lanes: %i; data_m: %u, data_n: %u, link_m: %u, link_n: %u, tu: %u\n",
+		    id, lane_count,
+		    m_n->data_m, m_n->data_n,
+		    m_n->link_m, m_n->link_n, m_n->tu);
+}
+
+static void
+intel_dump_infoframe(struct drm_i915_private *i915,
+		     const union hdmi_infoframe *frame)
+{
+	if (!drm_debug_enabled(DRM_UT_KMS))
+		return;
+
+	hdmi_infoframe_log(KERN_DEBUG, i915->drm.dev, frame);
+}
+
+static void
+intel_dump_dp_vsc_sdp(struct drm_i915_private *i915,
+		      const struct drm_dp_vsc_sdp *vsc)
+{
+	if (!drm_debug_enabled(DRM_UT_KMS))
+		return;
+
+	drm_dp_vsc_sdp_log(KERN_DEBUG, i915->drm.dev, vsc);
+}
+
+#define OUTPUT_TYPE(x) [INTEL_OUTPUT_ ## x] = #x
+
+static const char * const output_type_str[] = {
+	OUTPUT_TYPE(UNUSED),
+	OUTPUT_TYPE(ANALOG),
+	OUTPUT_TYPE(DVO),
+	OUTPUT_TYPE(SDVO),
+	OUTPUT_TYPE(LVDS),
+	OUTPUT_TYPE(TVOUT),
+	OUTPUT_TYPE(HDMI),
+	OUTPUT_TYPE(DP),
+	OUTPUT_TYPE(EDP),
+	OUTPUT_TYPE(DSI),
+	OUTPUT_TYPE(DDI),
+	OUTPUT_TYPE(DP_MST),
+};
+
+#undef OUTPUT_TYPE
+
+static void snprintf_output_types(char *buf, size_t len,
+				  unsigned int output_types)
+{
+	char *str = buf;
+	int i;
+
+	str[0] = '\0';
+
+	for (i = 0; i < ARRAY_SIZE(output_type_str); i++) {
+		int r;
+
+		if ((output_types & BIT(i)) == 0)
+			continue;
+
+		r = snprintf(str, len, "%s%s",
+			     str != buf ? "," : "", output_type_str[i]);
+		if (r >= len)
+			break;
+		str += r;
+		len -= r;
+
+		output_types &= ~BIT(i);
+	}
+
+	WARN_ON_ONCE(output_types != 0);
+}
+
+static const char * const output_format_str[] = {
+	[INTEL_OUTPUT_FORMAT_RGB] = "RGB",
+	[INTEL_OUTPUT_FORMAT_YCBCR420] = "YCBCR4:2:0",
+	[INTEL_OUTPUT_FORMAT_YCBCR444] = "YCBCR4:4:4",
+};
+
+static const char *output_formats(enum intel_output_format format)
+{
+	if (format >= ARRAY_SIZE(output_format_str))
+		return "invalid";
+	return output_format_str[format];
+}
+
+static void intel_dump_plane_state(const struct intel_plane_state *plane_state)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	struct drm_i915_private *i915 = to_i915(plane->base.dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+
+	if (!fb) {
+		drm_dbg_kms(&i915->drm,
+			    "[PLANE:%d:%s] fb: [NOFB], visible: %s\n",
+			    plane->base.base.id, plane->base.name,
+			    str_yes_no(plane_state->uapi.visible));
+		return;
+	}
+
+	drm_dbg_kms(&i915->drm,
+		    "[PLANE:%d:%s] fb: [FB:%d] %ux%u format = %p4cc modifier = 0x%llx, visible: %s\n",
+		    plane->base.base.id, plane->base.name,
+		    fb->base.id, fb->width, fb->height, &fb->format->format,
+		    fb->modifier, str_yes_no(plane_state->uapi.visible));
+	drm_dbg_kms(&i915->drm, "\trotation: 0x%x, scaler: %d, scaling_filter: %d\n",
+		    plane_state->hw.rotation, plane_state->scaler_id, plane_state->hw.scaling_filter);
+	if (plane_state->uapi.visible)
+		drm_dbg_kms(&i915->drm,
+			    "\tsrc: " DRM_RECT_FP_FMT " dst: " DRM_RECT_FMT "\n",
+			    DRM_RECT_FP_ARG(&plane_state->uapi.src),
+			    DRM_RECT_ARG(&plane_state->uapi.dst));
+}
+
+void intel_crtc_state_dump(const struct intel_crtc_state *pipe_config,
+			   struct intel_atomic_state *state,
+			   const char *context)
+{
+	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	const struct intel_plane_state *plane_state;
+	struct intel_plane *plane;
+	char buf[64];
+	int i;
+
+	drm_dbg_kms(&i915->drm, "[CRTC:%d:%s] enable: %s [%s]\n",
+		    crtc->base.base.id, crtc->base.name,
+		    str_yes_no(pipe_config->hw.enable), context);
+
+	if (!pipe_config->hw.enable)
+		goto dump_planes;
+
+	snprintf_output_types(buf, sizeof(buf), pipe_config->output_types);
+	drm_dbg_kms(&i915->drm,
+		    "active: %s, output_types: %s (0x%x), output format: %s\n",
+		    str_yes_no(pipe_config->hw.active),
+		    buf, pipe_config->output_types,
+		    output_formats(pipe_config->output_format));
+
+	drm_dbg_kms(&i915->drm,
+		    "cpu_transcoder: %s, pipe bpp: %i, dithering: %i\n",
+		    transcoder_name(pipe_config->cpu_transcoder),
+		    pipe_config->pipe_bpp, pipe_config->dither);
+
+	drm_dbg_kms(&i915->drm, "MST master transcoder: %s\n",
+		    transcoder_name(pipe_config->mst_master_transcoder));
+
+	drm_dbg_kms(&i915->drm,
+		    "port sync: master transcoder: %s, slave transcoder bitmask = 0x%x\n",
+		    transcoder_name(pipe_config->master_transcoder),
+		    pipe_config->sync_mode_slaves_mask);
+
+	drm_dbg_kms(&i915->drm, "bigjoiner: %s, pipes: 0x%x\n",
+		    intel_crtc_is_bigjoiner_slave(pipe_config) ? "slave" :
+		    intel_crtc_is_bigjoiner_master(pipe_config) ? "master" : "no",
+		    pipe_config->bigjoiner_pipes);
+
+	drm_dbg_kms(&i915->drm, "splitter: %s, link count %d, overlap %d\n",
+		    str_enabled_disabled(pipe_config->splitter.enable),
+		    pipe_config->splitter.link_count,
+		    pipe_config->splitter.pixel_overlap);
+
+	if (pipe_config->has_pch_encoder)
+		intel_dump_m_n_config(pipe_config, "fdi",
+				      pipe_config->fdi_lanes,
+				      &pipe_config->fdi_m_n);
+
+	if (intel_crtc_has_dp_encoder(pipe_config)) {
+		intel_dump_m_n_config(pipe_config, "dp m_n",
+				      pipe_config->lane_count,
+				      &pipe_config->dp_m_n);
+		intel_dump_m_n_config(pipe_config, "dp m2_n2",
+				      pipe_config->lane_count,
+				      &pipe_config->dp_m2_n2);
+	}
+
+	drm_dbg_kms(&i915->drm, "framestart delay: %d, MSA timing delay: %d\n",
+		    pipe_config->framestart_delay, pipe_config->msa_timing_delay);
+
+	drm_dbg_kms(&i915->drm,
+		    "audio: %i, infoframes: %i, infoframes enabled: 0x%x\n",
+		    pipe_config->has_audio, pipe_config->has_infoframe,
+		    pipe_config->infoframes.enable);
+
+	if (pipe_config->infoframes.enable &
+	    intel_hdmi_infoframe_enable(HDMI_PACKET_TYPE_GENERAL_CONTROL))
+		drm_dbg_kms(&i915->drm, "GCP: 0x%x\n",
+			    pipe_config->infoframes.gcp);
+	if (pipe_config->infoframes.enable &
+	    intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_AVI))
+		intel_dump_infoframe(i915, &pipe_config->infoframes.avi);
+	if (pipe_config->infoframes.enable &
+	    intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_SPD))
+		intel_dump_infoframe(i915, &pipe_config->infoframes.spd);
+	if (pipe_config->infoframes.enable &
+	    intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_VENDOR))
+		intel_dump_infoframe(i915, &pipe_config->infoframes.hdmi);
+	if (pipe_config->infoframes.enable &
+	    intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_DRM))
+		intel_dump_infoframe(i915, &pipe_config->infoframes.drm);
+	if (pipe_config->infoframes.enable &
+	    intel_hdmi_infoframe_enable(HDMI_PACKET_TYPE_GAMUT_METADATA))
+		intel_dump_infoframe(i915, &pipe_config->infoframes.drm);
+	if (pipe_config->infoframes.enable &
+	    intel_hdmi_infoframe_enable(DP_SDP_VSC))
+		intel_dump_dp_vsc_sdp(i915, &pipe_config->infoframes.vsc);
+
+	drm_dbg_kms(&i915->drm, "vrr: %s, vmin: %d, vmax: %d, pipeline full: %d, guardband: %d flipline: %d, vmin vblank: %d, vmax vblank: %d\n",
+		    str_yes_no(pipe_config->vrr.enable),
+		    pipe_config->vrr.vmin, pipe_config->vrr.vmax,
+		    pipe_config->vrr.pipeline_full, pipe_config->vrr.guardband,
+		    pipe_config->vrr.flipline,
+		    intel_vrr_vmin_vblank_start(pipe_config),
+		    intel_vrr_vmax_vblank_start(pipe_config));
+
+	drm_dbg_kms(&i915->drm, "requested mode: " DRM_MODE_FMT "\n",
+		    DRM_MODE_ARG(&pipe_config->hw.mode));
+	drm_dbg_kms(&i915->drm, "adjusted mode: " DRM_MODE_FMT "\n",
+		    DRM_MODE_ARG(&pipe_config->hw.adjusted_mode));
+	intel_dump_crtc_timings(i915, &pipe_config->hw.adjusted_mode);
+	drm_dbg_kms(&i915->drm, "pipe mode: " DRM_MODE_FMT "\n",
+		    DRM_MODE_ARG(&pipe_config->hw.pipe_mode));
+	intel_dump_crtc_timings(i915, &pipe_config->hw.pipe_mode);
+	drm_dbg_kms(&i915->drm,
+		    "port clock: %d, pipe src: " DRM_RECT_FMT ", pixel rate %d\n",
+		    pipe_config->port_clock, DRM_RECT_ARG(&pipe_config->pipe_src),
+		    pipe_config->pixel_rate);
+
+	drm_dbg_kms(&i915->drm, "linetime: %d, ips linetime: %d\n",
+		    pipe_config->linetime, pipe_config->ips_linetime);
+
+	if (DISPLAY_VER(i915) >= 9)
+		drm_dbg_kms(&i915->drm,
+			    "num_scalers: %d, scaler_users: 0x%x, scaler_id: %d, scaling_filter: %d\n",
+			    crtc->num_scalers,
+			    pipe_config->scaler_state.scaler_users,
+			    pipe_config->scaler_state.scaler_id,
+			    pipe_config->hw.scaling_filter);
+
+	if (HAS_GMCH(i915))
+		drm_dbg_kms(&i915->drm,
+			    "gmch pfit: control: 0x%08x, ratios: 0x%08x, lvds border: 0x%08x\n",
+			    pipe_config->gmch_pfit.control,
+			    pipe_config->gmch_pfit.pgm_ratios,
+			    pipe_config->gmch_pfit.lvds_border_bits);
+	else
+		drm_dbg_kms(&i915->drm,
+			    "pch pfit: " DRM_RECT_FMT ", %s, force thru: %s\n",
+			    DRM_RECT_ARG(&pipe_config->pch_pfit.dst),
+			    str_enabled_disabled(pipe_config->pch_pfit.enabled),
+			    str_yes_no(pipe_config->pch_pfit.force_thru));
+
+	drm_dbg_kms(&i915->drm, "ips: %i, double wide: %i, drrs: %i\n",
+		    pipe_config->ips_enabled, pipe_config->double_wide,
+		    pipe_config->has_drrs);
+
+	intel_dpll_dump_hw_state(i915, &pipe_config->dpll_hw_state);
+
+	if (IS_CHERRYVIEW(i915))
+		drm_dbg_kms(&i915->drm,
+			    "cgm_mode: 0x%x gamma_mode: 0x%x gamma_enable: %d csc_enable: %d\n",
+			    pipe_config->cgm_mode, pipe_config->gamma_mode,
+			    pipe_config->gamma_enable, pipe_config->csc_enable);
+	else
+		drm_dbg_kms(&i915->drm,
+			    "csc_mode: 0x%x gamma_mode: 0x%x gamma_enable: %d csc_enable: %d\n",
+			    pipe_config->csc_mode, pipe_config->gamma_mode,
+			    pipe_config->gamma_enable, pipe_config->csc_enable);
+
+	drm_dbg_kms(&i915->drm, "degamma lut: %d entries, gamma lut: %d entries\n",
+		    pipe_config->hw.degamma_lut ?
+		    drm_color_lut_size(pipe_config->hw.degamma_lut) : 0,
+		    pipe_config->hw.gamma_lut ?
+		    drm_color_lut_size(pipe_config->hw.gamma_lut) : 0);
+
+dump_planes:
+	if (!state)
+		return;
+
+	for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
+		if (plane->pipe == crtc->pipe)
+			intel_dump_plane_state(plane_state);
+	}
+}
diff --git a/drivers/gpu/drm/i915/display/intel_crtc_state_dump.h b/drivers/gpu/drm/i915/display/intel_crtc_state_dump.h
new file mode 100644
index 000000000..9399c35b7
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_crtc_state_dump.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#ifndef __INTEL_CRTC_STATE_DUMP_H__
+#define __INTEL_CRTC_STATE_DUMP_H__
+
+struct intel_crtc_state;
+struct intel_atomic_state;
+
+void intel_crtc_state_dump(const struct intel_crtc_state *crtc_state,
+			   struct intel_atomic_state *state,
+			   const char *context);
+
+#endif /* __INTEL_CRTC_STATE_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_cursor.c b/drivers/gpu/drm/i915/display/intel_cursor.c
new file mode 100644
index 000000000..87899e89b
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_cursor.c
@@ -0,0 +1,828 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+#include <linux/kernel.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_atomic_uapi.h>
+#include <drm/drm_blend.h>
+#include <drm/drm_damage_helper.h>
+#include <drm/drm_fourcc.h>
+
+#include "intel_atomic.h"
+#include "intel_atomic_plane.h"
+#include "intel_cursor.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_display.h"
+#include "intel_fb.h"
+#include "intel_fb_pin.h"
+#include "intel_frontbuffer.h"
+#include "intel_psr.h"
+#include "intel_sprite.h"
+#include "skl_watermark.h"
+
+/* Cursor formats */
+static const u32 intel_cursor_formats[] = {
+	DRM_FORMAT_ARGB8888,
+};
+
+static u32 intel_cursor_base(const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv =
+		to_i915(plane_state->uapi.plane->dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	const struct drm_i915_gem_object *obj = intel_fb_obj(fb);
+	u32 base;
+
+	if (INTEL_INFO(dev_priv)->display.cursor_needs_physical)
+		base = sg_dma_address(obj->mm.pages->sgl);
+	else
+		base = intel_plane_ggtt_offset(plane_state);
+
+	return base + plane_state->view.color_plane[0].offset;
+}
+
+static u32 intel_cursor_position(const struct intel_plane_state *plane_state)
+{
+	int x = plane_state->uapi.dst.x1;
+	int y = plane_state->uapi.dst.y1;
+	u32 pos = 0;
+
+	if (x < 0) {
+		pos |= CURSOR_POS_X_SIGN;
+		x = -x;
+	}
+	pos |= CURSOR_POS_X(x);
+
+	if (y < 0) {
+		pos |= CURSOR_POS_Y_SIGN;
+		y = -y;
+	}
+	pos |= CURSOR_POS_Y(y);
+
+	return pos;
+}
+
+static bool intel_cursor_size_ok(const struct intel_plane_state *plane_state)
+{
+	const struct drm_mode_config *config =
+		&plane_state->uapi.plane->dev->mode_config;
+	int width = drm_rect_width(&plane_state->uapi.dst);
+	int height = drm_rect_height(&plane_state->uapi.dst);
+
+	return width > 0 && width <= config->cursor_width &&
+		height > 0 && height <= config->cursor_height;
+}
+
+static int intel_cursor_check_surface(struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv =
+		to_i915(plane_state->uapi.plane->dev);
+	unsigned int rotation = plane_state->hw.rotation;
+	int src_x, src_y;
+	u32 offset;
+	int ret;
+
+	ret = intel_plane_compute_gtt(plane_state);
+	if (ret)
+		return ret;
+
+	if (!plane_state->uapi.visible)
+		return 0;
+
+	src_x = plane_state->uapi.src.x1 >> 16;
+	src_y = plane_state->uapi.src.y1 >> 16;
+
+	intel_add_fb_offsets(&src_x, &src_y, plane_state, 0);
+	offset = intel_plane_compute_aligned_offset(&src_x, &src_y,
+						    plane_state, 0);
+
+	if (src_x != 0 || src_y != 0) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Arbitrary cursor panning not supported\n");
+		return -EINVAL;
+	}
+
+	/*
+	 * Put the final coordinates back so that the src
+	 * coordinate checks will see the right values.
+	 */
+	drm_rect_translate_to(&plane_state->uapi.src,
+			      src_x << 16, src_y << 16);
+
+	/* ILK+ do this automagically in hardware */
+	if (HAS_GMCH(dev_priv) && rotation & DRM_MODE_ROTATE_180) {
+		const struct drm_framebuffer *fb = plane_state->hw.fb;
+		int src_w = drm_rect_width(&plane_state->uapi.src) >> 16;
+		int src_h = drm_rect_height(&plane_state->uapi.src) >> 16;
+
+		offset += (src_h * src_w - 1) * fb->format->cpp[0];
+	}
+
+	plane_state->view.color_plane[0].offset = offset;
+	plane_state->view.color_plane[0].x = src_x;
+	plane_state->view.color_plane[0].y = src_y;
+
+	return 0;
+}
+
+static int intel_check_cursor(struct intel_crtc_state *crtc_state,
+			      struct intel_plane_state *plane_state)
+{
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	struct drm_i915_private *i915 = to_i915(plane_state->uapi.plane->dev);
+	const struct drm_rect src = plane_state->uapi.src;
+	const struct drm_rect dst = plane_state->uapi.dst;
+	int ret;
+
+	if (fb && fb->modifier != DRM_FORMAT_MOD_LINEAR) {
+		drm_dbg_kms(&i915->drm, "cursor cannot be tiled\n");
+		return -EINVAL;
+	}
+
+	ret = intel_atomic_plane_check_clipping(plane_state, crtc_state,
+						DRM_PLANE_NO_SCALING,
+						DRM_PLANE_NO_SCALING,
+						true);
+	if (ret)
+		return ret;
+
+	/* Use the unclipped src/dst rectangles, which we program to hw */
+	plane_state->uapi.src = src;
+	plane_state->uapi.dst = dst;
+
+	/* final plane coordinates will be relative to the plane's pipe */
+	drm_rect_translate(&plane_state->uapi.dst,
+			   -crtc_state->pipe_src.x1,
+			   -crtc_state->pipe_src.y1);
+
+	ret = intel_cursor_check_surface(plane_state);
+	if (ret)
+		return ret;
+
+	if (!plane_state->uapi.visible)
+		return 0;
+
+	ret = intel_plane_check_src_coordinates(plane_state);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static unsigned int
+i845_cursor_max_stride(struct intel_plane *plane,
+		       u32 pixel_format, u64 modifier,
+		       unsigned int rotation)
+{
+	return 2048;
+}
+
+static u32 i845_cursor_ctl_crtc(const struct intel_crtc_state *crtc_state)
+{
+	u32 cntl = 0;
+
+	if (crtc_state->gamma_enable)
+		cntl |= CURSOR_PIPE_GAMMA_ENABLE;
+
+	return cntl;
+}
+
+static u32 i845_cursor_ctl(const struct intel_crtc_state *crtc_state,
+			   const struct intel_plane_state *plane_state)
+{
+	return CURSOR_ENABLE |
+		CURSOR_FORMAT_ARGB |
+		CURSOR_STRIDE(plane_state->view.color_plane[0].mapping_stride);
+}
+
+static bool i845_cursor_size_ok(const struct intel_plane_state *plane_state)
+{
+	int width = drm_rect_width(&plane_state->uapi.dst);
+
+	/*
+	 * 845g/865g are only limited by the width of their cursors,
+	 * the height is arbitrary up to the precision of the register.
+	 */
+	return intel_cursor_size_ok(plane_state) && IS_ALIGNED(width, 64);
+}
+
+static int i845_check_cursor(struct intel_crtc_state *crtc_state,
+			     struct intel_plane_state *plane_state)
+{
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	struct drm_i915_private *i915 = to_i915(plane_state->uapi.plane->dev);
+	int ret;
+
+	ret = intel_check_cursor(crtc_state, plane_state);
+	if (ret)
+		return ret;
+
+	/* if we want to turn off the cursor ignore width and height */
+	if (!fb)
+		return 0;
+
+	/* Check for which cursor types we support */
+	if (!i845_cursor_size_ok(plane_state)) {
+		drm_dbg_kms(&i915->drm,
+			    "Cursor dimension %dx%d not supported\n",
+			    drm_rect_width(&plane_state->uapi.dst),
+			    drm_rect_height(&plane_state->uapi.dst));
+		return -EINVAL;
+	}
+
+	drm_WARN_ON(&i915->drm, plane_state->uapi.visible &&
+		    plane_state->view.color_plane[0].mapping_stride != fb->pitches[0]);
+
+	switch (fb->pitches[0]) {
+	case 256:
+	case 512:
+	case 1024:
+	case 2048:
+		break;
+	default:
+		 drm_dbg_kms(&i915->drm, "Invalid cursor stride (%u)\n",
+			     fb->pitches[0]);
+		return -EINVAL;
+	}
+
+	plane_state->ctl = i845_cursor_ctl(crtc_state, plane_state);
+
+	return 0;
+}
+
+/* TODO: split into noarm+arm pair */
+static void i845_cursor_update_arm(struct intel_plane *plane,
+				   const struct intel_crtc_state *crtc_state,
+				   const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	u32 cntl = 0, base = 0, pos = 0, size = 0;
+
+	if (plane_state && plane_state->uapi.visible) {
+		unsigned int width = drm_rect_width(&plane_state->uapi.dst);
+		unsigned int height = drm_rect_height(&plane_state->uapi.dst);
+
+		cntl = plane_state->ctl |
+			i845_cursor_ctl_crtc(crtc_state);
+
+		size = CURSOR_HEIGHT(height) | CURSOR_WIDTH(width);
+
+		base = intel_cursor_base(plane_state);
+		pos = intel_cursor_position(plane_state);
+	}
+
+	/* On these chipsets we can only modify the base/size/stride
+	 * whilst the cursor is disabled.
+	 */
+	if (plane->cursor.base != base ||
+	    plane->cursor.size != size ||
+	    plane->cursor.cntl != cntl) {
+		intel_de_write_fw(dev_priv, CURCNTR(PIPE_A), 0);
+		intel_de_write_fw(dev_priv, CURBASE(PIPE_A), base);
+		intel_de_write_fw(dev_priv, CURSIZE(PIPE_A), size);
+		intel_de_write_fw(dev_priv, CURPOS(PIPE_A), pos);
+		intel_de_write_fw(dev_priv, CURCNTR(PIPE_A), cntl);
+
+		plane->cursor.base = base;
+		plane->cursor.size = size;
+		plane->cursor.cntl = cntl;
+	} else {
+		intel_de_write_fw(dev_priv, CURPOS(PIPE_A), pos);
+	}
+}
+
+static void i845_cursor_disable_arm(struct intel_plane *plane,
+				    const struct intel_crtc_state *crtc_state)
+{
+	i845_cursor_update_arm(plane, crtc_state, NULL);
+}
+
+static bool i845_cursor_get_hw_state(struct intel_plane *plane,
+				     enum pipe *pipe)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum intel_display_power_domain power_domain;
+	intel_wakeref_t wakeref;
+	bool ret;
+
+	power_domain = POWER_DOMAIN_PIPE(PIPE_A);
+	wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
+	if (!wakeref)
+		return false;
+
+	ret = intel_de_read(dev_priv, CURCNTR(PIPE_A)) & CURSOR_ENABLE;
+
+	*pipe = PIPE_A;
+
+	intel_display_power_put(dev_priv, power_domain, wakeref);
+
+	return ret;
+}
+
+static unsigned int
+i9xx_cursor_max_stride(struct intel_plane *plane,
+		       u32 pixel_format, u64 modifier,
+		       unsigned int rotation)
+{
+	return plane->base.dev->mode_config.cursor_width * 4;
+}
+
+static u32 i9xx_cursor_ctl_crtc(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	u32 cntl = 0;
+
+	if (DISPLAY_VER(dev_priv) >= 11)
+		return cntl;
+
+	if (crtc_state->gamma_enable)
+		cntl = MCURSOR_PIPE_GAMMA_ENABLE;
+
+	if (crtc_state->csc_enable)
+		cntl |= MCURSOR_PIPE_CSC_ENABLE;
+
+	if (DISPLAY_VER(dev_priv) < 5 && !IS_G4X(dev_priv))
+		cntl |= MCURSOR_PIPE_SEL(crtc->pipe);
+
+	return cntl;
+}
+
+static u32 i9xx_cursor_ctl(const struct intel_crtc_state *crtc_state,
+			   const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv =
+		to_i915(plane_state->uapi.plane->dev);
+	u32 cntl = 0;
+
+	if (IS_SANDYBRIDGE(dev_priv) || IS_IVYBRIDGE(dev_priv))
+		cntl |= MCURSOR_TRICKLE_FEED_DISABLE;
+
+	switch (drm_rect_width(&plane_state->uapi.dst)) {
+	case 64:
+		cntl |= MCURSOR_MODE_64_ARGB_AX;
+		break;
+	case 128:
+		cntl |= MCURSOR_MODE_128_ARGB_AX;
+		break;
+	case 256:
+		cntl |= MCURSOR_MODE_256_ARGB_AX;
+		break;
+	default:
+		MISSING_CASE(drm_rect_width(&plane_state->uapi.dst));
+		return 0;
+	}
+
+	if (plane_state->hw.rotation & DRM_MODE_ROTATE_180)
+		cntl |= MCURSOR_ROTATE_180;
+
+	/* Wa_22012358565:adl-p */
+	if (DISPLAY_VER(dev_priv) == 13)
+		cntl |= MCURSOR_ARB_SLOTS(1);
+
+	return cntl;
+}
+
+static bool i9xx_cursor_size_ok(const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv =
+		to_i915(plane_state->uapi.plane->dev);
+	int width = drm_rect_width(&plane_state->uapi.dst);
+	int height = drm_rect_height(&plane_state->uapi.dst);
+
+	if (!intel_cursor_size_ok(plane_state))
+		return false;
+
+	/* Cursor width is limited to a few power-of-two sizes */
+	switch (width) {
+	case 256:
+	case 128:
+	case 64:
+		break;
+	default:
+		return false;
+	}
+
+	/*
+	 * IVB+ have CUR_FBC_CTL which allows an arbitrary cursor
+	 * height from 8 lines up to the cursor width, when the
+	 * cursor is not rotated. Everything else requires square
+	 * cursors.
+	 */
+	if (HAS_CUR_FBC(dev_priv) &&
+	    plane_state->hw.rotation & DRM_MODE_ROTATE_0) {
+		if (height < 8 || height > width)
+			return false;
+	} else {
+		if (height != width)
+			return false;
+	}
+
+	return true;
+}
+
+static int i9xx_check_cursor(struct intel_crtc_state *crtc_state,
+			     struct intel_plane_state *plane_state)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	enum pipe pipe = plane->pipe;
+	int ret;
+
+	ret = intel_check_cursor(crtc_state, plane_state);
+	if (ret)
+		return ret;
+
+	/* if we want to turn off the cursor ignore width and height */
+	if (!fb)
+		return 0;
+
+	/* Check for which cursor types we support */
+	if (!i9xx_cursor_size_ok(plane_state)) {
+		drm_dbg(&dev_priv->drm,
+			"Cursor dimension %dx%d not supported\n",
+			drm_rect_width(&plane_state->uapi.dst),
+			drm_rect_height(&plane_state->uapi.dst));
+		return -EINVAL;
+	}
+
+	drm_WARN_ON(&dev_priv->drm, plane_state->uapi.visible &&
+		    plane_state->view.color_plane[0].mapping_stride != fb->pitches[0]);
+
+	if (fb->pitches[0] !=
+	    drm_rect_width(&plane_state->uapi.dst) * fb->format->cpp[0]) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Invalid cursor stride (%u) (cursor width %d)\n",
+			    fb->pitches[0],
+			    drm_rect_width(&plane_state->uapi.dst));
+		return -EINVAL;
+	}
+
+	/*
+	 * There's something wrong with the cursor on CHV pipe C.
+	 * If it straddles the left edge of the screen then
+	 * moving it away from the edge or disabling it often
+	 * results in a pipe underrun, and often that can lead to
+	 * dead pipe (constant underrun reported, and it scans
+	 * out just a solid color). To recover from that, the
+	 * display power well must be turned off and on again.
+	 * Refuse the put the cursor into that compromised position.
+	 */
+	if (IS_CHERRYVIEW(dev_priv) && pipe == PIPE_C &&
+	    plane_state->uapi.visible && plane_state->uapi.dst.x1 < 0) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "CHV cursor C not allowed to straddle the left screen edge\n");
+		return -EINVAL;
+	}
+
+	plane_state->ctl = i9xx_cursor_ctl(crtc_state, plane_state);
+
+	return 0;
+}
+
+/* TODO: split into noarm+arm pair */
+static void i9xx_cursor_update_arm(struct intel_plane *plane,
+				   const struct intel_crtc_state *crtc_state,
+				   const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum pipe pipe = plane->pipe;
+	u32 cntl = 0, base = 0, pos = 0, fbc_ctl = 0;
+
+	if (plane_state && plane_state->uapi.visible) {
+		int width = drm_rect_width(&plane_state->uapi.dst);
+		int height = drm_rect_height(&plane_state->uapi.dst);
+
+		cntl = plane_state->ctl |
+			i9xx_cursor_ctl_crtc(crtc_state);
+
+		if (width != height)
+			fbc_ctl = CUR_FBC_EN | CUR_FBC_HEIGHT(height - 1);
+
+		base = intel_cursor_base(plane_state);
+		pos = intel_cursor_position(plane_state);
+	}
+
+	/*
+	 * On some platforms writing CURCNTR first will also
+	 * cause CURPOS to be armed by the CURBASE write.
+	 * Without the CURCNTR write the CURPOS write would
+	 * arm itself. Thus we always update CURCNTR before
+	 * CURPOS.
+	 *
+	 * On other platforms CURPOS always requires the
+	 * CURBASE write to arm the update. Additonally
+	 * a write to any of the cursor register will cancel
+	 * an already armed cursor update. Thus leaving out
+	 * the CURBASE write after CURPOS could lead to a
+	 * cursor that doesn't appear to move, or even change
+	 * shape. Thus we always write CURBASE.
+	 *
+	 * The other registers are armed by the CURBASE write
+	 * except when the plane is getting enabled at which time
+	 * the CURCNTR write arms the update.
+	 */
+
+	if (DISPLAY_VER(dev_priv) >= 9)
+		skl_write_cursor_wm(plane, crtc_state);
+
+	if (plane_state)
+		intel_psr2_program_plane_sel_fetch(plane, crtc_state, plane_state, 0);
+	else
+		intel_psr2_disable_plane_sel_fetch(plane, crtc_state);
+
+	if (plane->cursor.base != base ||
+	    plane->cursor.size != fbc_ctl ||
+	    plane->cursor.cntl != cntl) {
+		if (HAS_CUR_FBC(dev_priv))
+			intel_de_write_fw(dev_priv, CUR_FBC_CTL(pipe),
+					  fbc_ctl);
+		intel_de_write_fw(dev_priv, CURCNTR(pipe), cntl);
+		intel_de_write_fw(dev_priv, CURPOS(pipe), pos);
+		intel_de_write_fw(dev_priv, CURBASE(pipe), base);
+
+		plane->cursor.base = base;
+		plane->cursor.size = fbc_ctl;
+		plane->cursor.cntl = cntl;
+	} else {
+		intel_de_write_fw(dev_priv, CURPOS(pipe), pos);
+		intel_de_write_fw(dev_priv, CURBASE(pipe), base);
+	}
+}
+
+static void i9xx_cursor_disable_arm(struct intel_plane *plane,
+				    const struct intel_crtc_state *crtc_state)
+{
+	i9xx_cursor_update_arm(plane, crtc_state, NULL);
+}
+
+static bool i9xx_cursor_get_hw_state(struct intel_plane *plane,
+				     enum pipe *pipe)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum intel_display_power_domain power_domain;
+	intel_wakeref_t wakeref;
+	bool ret;
+	u32 val;
+
+	/*
+	 * Not 100% correct for planes that can move between pipes,
+	 * but that's only the case for gen2-3 which don't have any
+	 * display power wells.
+	 */
+	power_domain = POWER_DOMAIN_PIPE(plane->pipe);
+	wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
+	if (!wakeref)
+		return false;
+
+	val = intel_de_read(dev_priv, CURCNTR(plane->pipe));
+
+	ret = val & MCURSOR_MODE_MASK;
+
+	if (DISPLAY_VER(dev_priv) >= 5 || IS_G4X(dev_priv))
+		*pipe = plane->pipe;
+	else
+		*pipe = REG_FIELD_GET(MCURSOR_PIPE_SEL_MASK, val);
+
+	intel_display_power_put(dev_priv, power_domain, wakeref);
+
+	return ret;
+}
+
+static bool intel_cursor_format_mod_supported(struct drm_plane *_plane,
+					      u32 format, u64 modifier)
+{
+	if (!intel_fb_plane_supports_modifier(to_intel_plane(_plane), modifier))
+		return false;
+
+	return format == DRM_FORMAT_ARGB8888;
+}
+
+static int
+intel_legacy_cursor_update(struct drm_plane *_plane,
+			   struct drm_crtc *_crtc,
+			   struct drm_framebuffer *fb,
+			   int crtc_x, int crtc_y,
+			   unsigned int crtc_w, unsigned int crtc_h,
+			   u32 src_x, u32 src_y,
+			   u32 src_w, u32 src_h,
+			   struct drm_modeset_acquire_ctx *ctx)
+{
+	struct intel_plane *plane = to_intel_plane(_plane);
+	struct intel_crtc *crtc = to_intel_crtc(_crtc);
+	struct intel_plane_state *old_plane_state =
+		to_intel_plane_state(plane->base.state);
+	struct intel_plane_state *new_plane_state;
+	struct intel_crtc_state *crtc_state =
+		to_intel_crtc_state(crtc->base.state);
+	struct intel_crtc_state *new_crtc_state;
+	int ret;
+
+	/*
+	 * When crtc is inactive or there is a modeset pending,
+	 * wait for it to complete in the slowpath.
+	 * PSR2 selective fetch also requires the slow path as
+	 * PSR2 plane and transcoder registers can only be updated during
+	 * vblank.
+	 *
+	 * FIXME bigjoiner fastpath would be good
+	 */
+	if (!crtc_state->hw.active || intel_crtc_needs_modeset(crtc_state) ||
+	    crtc_state->update_pipe || crtc_state->bigjoiner_pipes)
+		goto slow;
+
+	/*
+	 * Don't do an async update if there is an outstanding commit modifying
+	 * the plane.  This prevents our async update's changes from getting
+	 * overridden by a previous synchronous update's state.
+	 */
+	if (old_plane_state->uapi.commit &&
+	    !try_wait_for_completion(&old_plane_state->uapi.commit->hw_done))
+		goto slow;
+
+	/*
+	 * If any parameters change that may affect watermarks,
+	 * take the slowpath. Only changing fb or position should be
+	 * in the fastpath.
+	 */
+	if (old_plane_state->uapi.crtc != &crtc->base ||
+	    old_plane_state->uapi.src_w != src_w ||
+	    old_plane_state->uapi.src_h != src_h ||
+	    old_plane_state->uapi.crtc_w != crtc_w ||
+	    old_plane_state->uapi.crtc_h != crtc_h ||
+	    !old_plane_state->uapi.fb != !fb)
+		goto slow;
+
+	new_plane_state = to_intel_plane_state(intel_plane_duplicate_state(&plane->base));
+	if (!new_plane_state)
+		return -ENOMEM;
+
+	new_crtc_state = to_intel_crtc_state(intel_crtc_duplicate_state(&crtc->base));
+	if (!new_crtc_state) {
+		ret = -ENOMEM;
+		goto out_free;
+	}
+
+	drm_atomic_set_fb_for_plane(&new_plane_state->uapi, fb);
+
+	new_plane_state->uapi.src_x = src_x;
+	new_plane_state->uapi.src_y = src_y;
+	new_plane_state->uapi.src_w = src_w;
+	new_plane_state->uapi.src_h = src_h;
+	new_plane_state->uapi.crtc_x = crtc_x;
+	new_plane_state->uapi.crtc_y = crtc_y;
+	new_plane_state->uapi.crtc_w = crtc_w;
+	new_plane_state->uapi.crtc_h = crtc_h;
+
+	intel_plane_copy_uapi_to_hw_state(new_plane_state, new_plane_state, crtc);
+
+	ret = intel_plane_atomic_check_with_state(crtc_state, new_crtc_state,
+						  old_plane_state, new_plane_state);
+	if (ret)
+		goto out_free;
+
+	ret = intel_plane_pin_fb(new_plane_state);
+	if (ret)
+		goto out_free;
+
+	intel_frontbuffer_flush(to_intel_frontbuffer(new_plane_state->hw.fb),
+				ORIGIN_CURSOR_UPDATE);
+	intel_frontbuffer_track(to_intel_frontbuffer(old_plane_state->hw.fb),
+				to_intel_frontbuffer(new_plane_state->hw.fb),
+				plane->frontbuffer_bit);
+
+	/* Swap plane state */
+	plane->base.state = &new_plane_state->uapi;
+
+	/*
+	 * We cannot swap crtc_state as it may be in use by an atomic commit or
+	 * page flip that's running simultaneously. If we swap crtc_state and
+	 * destroy the old state, we will cause a use-after-free there.
+	 *
+	 * Only update active_planes, which is needed for our internal
+	 * bookkeeping. Either value will do the right thing when updating
+	 * planes atomically. If the cursor was part of the atomic update then
+	 * we would have taken the slowpath.
+	 */
+	crtc_state->active_planes = new_crtc_state->active_planes;
+
+	/*
+	 * Technically we should do a vblank evasion here to make
+	 * sure all the cursor registers update on the same frame.
+	 * For now just make sure the register writes happen as
+	 * quickly as possible to minimize the race window.
+	 */
+	local_irq_disable();
+
+	if (new_plane_state->uapi.visible) {
+		intel_plane_update_noarm(plane, crtc_state, new_plane_state);
+		intel_plane_update_arm(plane, crtc_state, new_plane_state);
+	} else {
+		intel_plane_disable_arm(plane, crtc_state);
+	}
+
+	local_irq_enable();
+
+	intel_plane_unpin_fb(old_plane_state);
+
+out_free:
+	if (new_crtc_state)
+		intel_crtc_destroy_state(&crtc->base, &new_crtc_state->uapi);
+	if (ret)
+		intel_plane_destroy_state(&plane->base, &new_plane_state->uapi);
+	else
+		intel_plane_destroy_state(&plane->base, &old_plane_state->uapi);
+	return ret;
+
+slow:
+	return drm_atomic_helper_update_plane(&plane->base, &crtc->base, fb,
+					      crtc_x, crtc_y, crtc_w, crtc_h,
+					      src_x, src_y, src_w, src_h, ctx);
+}
+
+static const struct drm_plane_funcs intel_cursor_plane_funcs = {
+	.update_plane = intel_legacy_cursor_update,
+	.disable_plane = drm_atomic_helper_disable_plane,
+	.destroy = intel_plane_destroy,
+	.atomic_duplicate_state = intel_plane_duplicate_state,
+	.atomic_destroy_state = intel_plane_destroy_state,
+	.format_mod_supported = intel_cursor_format_mod_supported,
+};
+
+struct intel_plane *
+intel_cursor_plane_create(struct drm_i915_private *dev_priv,
+			  enum pipe pipe)
+{
+	struct intel_plane *cursor;
+	int ret, zpos;
+	u64 *modifiers;
+
+	cursor = intel_plane_alloc();
+	if (IS_ERR(cursor))
+		return cursor;
+
+	cursor->pipe = pipe;
+	cursor->i9xx_plane = (enum i9xx_plane_id) pipe;
+	cursor->id = PLANE_CURSOR;
+	cursor->frontbuffer_bit = INTEL_FRONTBUFFER(pipe, cursor->id);
+
+	if (IS_I845G(dev_priv) || IS_I865G(dev_priv)) {
+		cursor->max_stride = i845_cursor_max_stride;
+		cursor->update_arm = i845_cursor_update_arm;
+		cursor->disable_arm = i845_cursor_disable_arm;
+		cursor->get_hw_state = i845_cursor_get_hw_state;
+		cursor->check_plane = i845_check_cursor;
+	} else {
+		cursor->max_stride = i9xx_cursor_max_stride;
+		cursor->update_arm = i9xx_cursor_update_arm;
+		cursor->disable_arm = i9xx_cursor_disable_arm;
+		cursor->get_hw_state = i9xx_cursor_get_hw_state;
+		cursor->check_plane = i9xx_check_cursor;
+	}
+
+	cursor->cursor.base = ~0;
+	cursor->cursor.cntl = ~0;
+
+	if (IS_I845G(dev_priv) || IS_I865G(dev_priv) || HAS_CUR_FBC(dev_priv))
+		cursor->cursor.size = ~0;
+
+	modifiers = intel_fb_plane_get_modifiers(dev_priv, INTEL_PLANE_CAP_NONE);
+
+	ret = drm_universal_plane_init(&dev_priv->drm, &cursor->base,
+				       0, &intel_cursor_plane_funcs,
+				       intel_cursor_formats,
+				       ARRAY_SIZE(intel_cursor_formats),
+				       modifiers,
+				       DRM_PLANE_TYPE_CURSOR,
+				       "cursor %c", pipe_name(pipe));
+
+	kfree(modifiers);
+
+	if (ret)
+		goto fail;
+
+	if (DISPLAY_VER(dev_priv) >= 4)
+		drm_plane_create_rotation_property(&cursor->base,
+						   DRM_MODE_ROTATE_0,
+						   DRM_MODE_ROTATE_0 |
+						   DRM_MODE_ROTATE_180);
+
+	zpos = RUNTIME_INFO(dev_priv)->num_sprites[pipe] + 1;
+	drm_plane_create_zpos_immutable_property(&cursor->base, zpos);
+
+	if (DISPLAY_VER(dev_priv) >= 12)
+		drm_plane_enable_fb_damage_clips(&cursor->base);
+
+	intel_plane_helper_add(cursor);
+
+	return cursor;
+
+fail:
+	intel_plane_free(cursor);
+
+	return ERR_PTR(ret);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_cursor.h b/drivers/gpu/drm/i915/display/intel_cursor.h
new file mode 100644
index 000000000..ce333bf4c
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_cursor.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#ifndef _INTEL_CURSOR_H_
+#define _INTEL_CURSOR_H_
+
+enum pipe;
+struct drm_i915_private;
+struct intel_plane;
+
+struct intel_plane *
+intel_cursor_plane_create(struct drm_i915_private *dev_priv,
+			  enum pipe pipe);
+
+#endif
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
new file mode 100644
index 000000000..706e2d956
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -0,0 +1,4525 @@
+/*
+ * Copyright © 2012 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Eugeni Dodonov <eugeni.dodonov@intel.com>
+ *
+ */
+
+#include <linux/string_helpers.h>
+
+#include <drm/display/drm_scdc_helper.h>
+#include <drm/drm_privacy_screen_consumer.h>
+
+#include "i915_drv.h"
+#include "intel_audio.h"
+#include "intel_audio_regs.h"
+#include "intel_backlight.h"
+#include "intel_combo_phy.h"
+#include "intel_combo_phy_regs.h"
+#include "intel_connector.h"
+#include "intel_crtc.h"
+#include "intel_ddi.h"
+#include "intel_ddi_buf_trans.h"
+#include "intel_de.h"
+#include "intel_display_power.h"
+#include "intel_display_types.h"
+#include "intel_dkl_phy.h"
+#include "intel_dp.h"
+#include "intel_dp_link_training.h"
+#include "intel_dp_mst.h"
+#include "intel_dpio_phy.h"
+#include "intel_dsi.h"
+#include "intel_fdi.h"
+#include "intel_fifo_underrun.h"
+#include "intel_gmbus.h"
+#include "intel_hdcp.h"
+#include "intel_hdmi.h"
+#include "intel_hotplug.h"
+#include "intel_lspcon.h"
+#include "intel_pps.h"
+#include "intel_psr.h"
+#include "intel_quirks.h"
+#include "intel_snps_phy.h"
+#include "intel_sprite.h"
+#include "intel_tc.h"
+#include "intel_tc_phy_regs.h"
+#include "intel_vdsc.h"
+#include "intel_vrr.h"
+#include "skl_scaler.h"
+#include "skl_universal_plane.h"
+
+static const u8 index_to_dp_signal_levels[] = {
+	[0] = DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0,
+	[1] = DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1,
+	[2] = DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2,
+	[3] = DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_3,
+	[4] = DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0,
+	[5] = DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1,
+	[6] = DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2,
+	[7] = DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0,
+	[8] = DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1,
+	[9] = DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0,
+};
+
+static int intel_ddi_hdmi_level(struct intel_encoder *encoder,
+				const struct intel_ddi_buf_trans *trans)
+{
+	int level;
+
+	level = intel_bios_hdmi_level_shift(encoder);
+	if (level < 0)
+		level = trans->hdmi_default_entry;
+
+	return level;
+}
+
+static bool has_buf_trans_select(struct drm_i915_private *i915)
+{
+	return DISPLAY_VER(i915) < 10 && !IS_BROXTON(i915);
+}
+
+static bool has_iboost(struct drm_i915_private *i915)
+{
+	return DISPLAY_VER(i915) == 9 && !IS_BROXTON(i915);
+}
+
+/*
+ * Starting with Haswell, DDI port buffers must be programmed with correct
+ * values in advance. This function programs the correct values for
+ * DP/eDP/FDI use cases.
+ */
+void hsw_prepare_dp_ddi_buffers(struct intel_encoder *encoder,
+				const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	u32 iboost_bit = 0;
+	int i, n_entries;
+	enum port port = encoder->port;
+	const struct intel_ddi_buf_trans *trans;
+
+	trans = encoder->get_buf_trans(encoder, crtc_state, &n_entries);
+	if (drm_WARN_ON_ONCE(&dev_priv->drm, !trans))
+		return;
+
+	/* If we're boosting the current, set bit 31 of trans1 */
+	if (has_iboost(dev_priv) &&
+	    intel_bios_encoder_dp_boost_level(encoder->devdata))
+		iboost_bit = DDI_BUF_BALANCE_LEG_ENABLE;
+
+	for (i = 0; i < n_entries; i++) {
+		intel_de_write(dev_priv, DDI_BUF_TRANS_LO(port, i),
+			       trans->entries[i].hsw.trans1 | iboost_bit);
+		intel_de_write(dev_priv, DDI_BUF_TRANS_HI(port, i),
+			       trans->entries[i].hsw.trans2);
+	}
+}
+
+/*
+ * Starting with Haswell, DDI port buffers must be programmed with correct
+ * values in advance. This function programs the correct values for
+ * HDMI/DVI use cases.
+ */
+static void hsw_prepare_hdmi_ddi_buffers(struct intel_encoder *encoder,
+					 const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	int level = intel_ddi_level(encoder, crtc_state, 0);
+	u32 iboost_bit = 0;
+	int n_entries;
+	enum port port = encoder->port;
+	const struct intel_ddi_buf_trans *trans;
+
+	trans = encoder->get_buf_trans(encoder, crtc_state, &n_entries);
+	if (drm_WARN_ON_ONCE(&dev_priv->drm, !trans))
+		return;
+
+	/* If we're boosting the current, set bit 31 of trans1 */
+	if (has_iboost(dev_priv) &&
+	    intel_bios_encoder_hdmi_boost_level(encoder->devdata))
+		iboost_bit = DDI_BUF_BALANCE_LEG_ENABLE;
+
+	/* Entry 9 is for HDMI: */
+	intel_de_write(dev_priv, DDI_BUF_TRANS_LO(port, 9),
+		       trans->entries[level].hsw.trans1 | iboost_bit);
+	intel_de_write(dev_priv, DDI_BUF_TRANS_HI(port, 9),
+		       trans->entries[level].hsw.trans2);
+}
+
+void intel_wait_ddi_buf_idle(struct drm_i915_private *dev_priv,
+			     enum port port)
+{
+	if (IS_BROXTON(dev_priv)) {
+		udelay(16);
+		return;
+	}
+
+	if (wait_for_us((intel_de_read(dev_priv, DDI_BUF_CTL(port)) &
+			 DDI_BUF_IS_IDLE), 8))
+		drm_err(&dev_priv->drm, "Timeout waiting for DDI BUF %c to get idle\n",
+			port_name(port));
+}
+
+static void intel_wait_ddi_buf_active(struct drm_i915_private *dev_priv,
+				      enum port port)
+{
+	int ret;
+
+	/* Wait > 518 usecs for DDI_BUF_CTL to be non idle */
+	if (DISPLAY_VER(dev_priv) < 10) {
+		usleep_range(518, 1000);
+		return;
+	}
+
+	ret = _wait_for(!(intel_de_read(dev_priv, DDI_BUF_CTL(port)) &
+			  DDI_BUF_IS_IDLE), IS_DG2(dev_priv) ? 1200 : 500, 10, 10);
+
+	if (ret)
+		drm_err(&dev_priv->drm, "Timeout waiting for DDI BUF %c to get active\n",
+			port_name(port));
+}
+
+static u32 hsw_pll_to_ddi_pll_sel(const struct intel_shared_dpll *pll)
+{
+	switch (pll->info->id) {
+	case DPLL_ID_WRPLL1:
+		return PORT_CLK_SEL_WRPLL1;
+	case DPLL_ID_WRPLL2:
+		return PORT_CLK_SEL_WRPLL2;
+	case DPLL_ID_SPLL:
+		return PORT_CLK_SEL_SPLL;
+	case DPLL_ID_LCPLL_810:
+		return PORT_CLK_SEL_LCPLL_810;
+	case DPLL_ID_LCPLL_1350:
+		return PORT_CLK_SEL_LCPLL_1350;
+	case DPLL_ID_LCPLL_2700:
+		return PORT_CLK_SEL_LCPLL_2700;
+	default:
+		MISSING_CASE(pll->info->id);
+		return PORT_CLK_SEL_NONE;
+	}
+}
+
+static u32 icl_pll_to_ddi_clk_sel(struct intel_encoder *encoder,
+				  const struct intel_crtc_state *crtc_state)
+{
+	const struct intel_shared_dpll *pll = crtc_state->shared_dpll;
+	int clock = crtc_state->port_clock;
+	const enum intel_dpll_id id = pll->info->id;
+
+	switch (id) {
+	default:
+		/*
+		 * DPLL_ID_ICL_DPLL0 and DPLL_ID_ICL_DPLL1 should not be used
+		 * here, so do warn if this get passed in
+		 */
+		MISSING_CASE(id);
+		return DDI_CLK_SEL_NONE;
+	case DPLL_ID_ICL_TBTPLL:
+		switch (clock) {
+		case 162000:
+			return DDI_CLK_SEL_TBT_162;
+		case 270000:
+			return DDI_CLK_SEL_TBT_270;
+		case 540000:
+			return DDI_CLK_SEL_TBT_540;
+		case 810000:
+			return DDI_CLK_SEL_TBT_810;
+		default:
+			MISSING_CASE(clock);
+			return DDI_CLK_SEL_NONE;
+		}
+	case DPLL_ID_ICL_MGPLL1:
+	case DPLL_ID_ICL_MGPLL2:
+	case DPLL_ID_ICL_MGPLL3:
+	case DPLL_ID_ICL_MGPLL4:
+	case DPLL_ID_TGL_MGPLL5:
+	case DPLL_ID_TGL_MGPLL6:
+		return DDI_CLK_SEL_MG;
+	}
+}
+
+static u32 ddi_buf_phy_link_rate(int port_clock)
+{
+	switch (port_clock) {
+	case 162000:
+		return DDI_BUF_PHY_LINK_RATE(0);
+	case 216000:
+		return DDI_BUF_PHY_LINK_RATE(4);
+	case 243000:
+		return DDI_BUF_PHY_LINK_RATE(5);
+	case 270000:
+		return DDI_BUF_PHY_LINK_RATE(1);
+	case 324000:
+		return DDI_BUF_PHY_LINK_RATE(6);
+	case 432000:
+		return DDI_BUF_PHY_LINK_RATE(7);
+	case 540000:
+		return DDI_BUF_PHY_LINK_RATE(2);
+	case 810000:
+		return DDI_BUF_PHY_LINK_RATE(3);
+	default:
+		MISSING_CASE(port_clock);
+		return DDI_BUF_PHY_LINK_RATE(0);
+	}
+}
+
+static void intel_ddi_init_dp_buf_reg(struct intel_encoder *encoder,
+				      const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	enum phy phy = intel_port_to_phy(i915, encoder->port);
+
+	/* DDI_BUF_CTL_ENABLE will be set by intel_ddi_prepare_link_retrain() later */
+	intel_dp->DP = dig_port->saved_port_bits |
+		DDI_PORT_WIDTH(crtc_state->lane_count) |
+		DDI_BUF_TRANS_SELECT(0);
+
+	if (IS_ALDERLAKE_P(i915) && intel_phy_is_tc(i915, phy)) {
+		intel_dp->DP |= ddi_buf_phy_link_rate(crtc_state->port_clock);
+		if (!intel_tc_port_in_tbt_alt_mode(dig_port))
+			intel_dp->DP |= DDI_BUF_CTL_TC_PHY_OWNERSHIP;
+	}
+}
+
+static int icl_calc_tbt_pll_link(struct drm_i915_private *dev_priv,
+				 enum port port)
+{
+	u32 val = intel_de_read(dev_priv, DDI_CLK_SEL(port)) & DDI_CLK_SEL_MASK;
+
+	switch (val) {
+	case DDI_CLK_SEL_NONE:
+		return 0;
+	case DDI_CLK_SEL_TBT_162:
+		return 162000;
+	case DDI_CLK_SEL_TBT_270:
+		return 270000;
+	case DDI_CLK_SEL_TBT_540:
+		return 540000;
+	case DDI_CLK_SEL_TBT_810:
+		return 810000;
+	default:
+		MISSING_CASE(val);
+		return 0;
+	}
+}
+
+static void ddi_dotclock_get(struct intel_crtc_state *pipe_config)
+{
+	/* CRT dotclock is determined via other means */
+	if (pipe_config->has_pch_encoder)
+		return;
+
+	pipe_config->hw.adjusted_mode.crtc_clock =
+		intel_crtc_dotclock(pipe_config);
+}
+
+void intel_ddi_set_dp_msa(const struct intel_crtc_state *crtc_state,
+			  const struct drm_connector_state *conn_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+	u32 temp;
+
+	if (!intel_crtc_has_dp_encoder(crtc_state))
+		return;
+
+	drm_WARN_ON(&dev_priv->drm, transcoder_is_dsi(cpu_transcoder));
+
+	temp = DP_MSA_MISC_SYNC_CLOCK;
+
+	switch (crtc_state->pipe_bpp) {
+	case 18:
+		temp |= DP_MSA_MISC_6_BPC;
+		break;
+	case 24:
+		temp |= DP_MSA_MISC_8_BPC;
+		break;
+	case 30:
+		temp |= DP_MSA_MISC_10_BPC;
+		break;
+	case 36:
+		temp |= DP_MSA_MISC_12_BPC;
+		break;
+	default:
+		MISSING_CASE(crtc_state->pipe_bpp);
+		break;
+	}
+
+	/* nonsense combination */
+	drm_WARN_ON(&dev_priv->drm, crtc_state->limited_color_range &&
+		    crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB);
+
+	if (crtc_state->limited_color_range)
+		temp |= DP_MSA_MISC_COLOR_CEA_RGB;
+
+	/*
+	 * As per DP 1.2 spec section 2.3.4.3 while sending
+	 * YCBCR 444 signals we should program MSA MISC1/0 fields with
+	 * colorspace information.
+	 */
+	if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR444)
+		temp |= DP_MSA_MISC_COLOR_YCBCR_444_BT709;
+
+	/*
+	 * As per DP 1.4a spec section 2.2.4.3 [MSA Field for Indication
+	 * of Color Encoding Format and Content Color Gamut] while sending
+	 * YCBCR 420, HDR BT.2020 signals we should program MSA MISC1 fields
+	 * which indicate VSC SDP for the Pixel Encoding/Colorimetry Format.
+	 */
+	if (intel_dp_needs_vsc_sdp(crtc_state, conn_state))
+		temp |= DP_MSA_MISC_COLOR_VSC_SDP;
+
+	intel_de_write(dev_priv, TRANS_MSA_MISC(cpu_transcoder), temp);
+}
+
+static u32 bdw_trans_port_sync_master_select(enum transcoder master_transcoder)
+{
+	if (master_transcoder == TRANSCODER_EDP)
+		return 0;
+	else
+		return master_transcoder + 1;
+}
+
+static void
+intel_ddi_config_transcoder_dp2(struct intel_encoder *encoder,
+				const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+	u32 val = 0;
+
+	if (intel_dp_is_uhbr(crtc_state))
+		val = TRANS_DP2_128B132B_CHANNEL_CODING;
+
+	intel_de_write(i915, TRANS_DP2_CTL(cpu_transcoder), val);
+}
+
+/*
+ * Returns the TRANS_DDI_FUNC_CTL value based on CRTC state.
+ *
+ * Only intended to be used by intel_ddi_enable_transcoder_func() and
+ * intel_ddi_config_transcoder_func().
+ */
+static u32
+intel_ddi_transcoder_func_reg_val_get(struct intel_encoder *encoder,
+				      const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+	enum port port = encoder->port;
+	u32 temp;
+
+	/* Enable TRANS_DDI_FUNC_CTL for the pipe to work in HDMI mode */
+	temp = TRANS_DDI_FUNC_ENABLE;
+	if (DISPLAY_VER(dev_priv) >= 12)
+		temp |= TGL_TRANS_DDI_SELECT_PORT(port);
+	else
+		temp |= TRANS_DDI_SELECT_PORT(port);
+
+	switch (crtc_state->pipe_bpp) {
+	default:
+		MISSING_CASE(crtc_state->pipe_bpp);
+		fallthrough;
+	case 18:
+		temp |= TRANS_DDI_BPC_6;
+		break;
+	case 24:
+		temp |= TRANS_DDI_BPC_8;
+		break;
+	case 30:
+		temp |= TRANS_DDI_BPC_10;
+		break;
+	case 36:
+		temp |= TRANS_DDI_BPC_12;
+		break;
+	}
+
+	if (crtc_state->hw.adjusted_mode.flags & DRM_MODE_FLAG_PVSYNC)
+		temp |= TRANS_DDI_PVSYNC;
+	if (crtc_state->hw.adjusted_mode.flags & DRM_MODE_FLAG_PHSYNC)
+		temp |= TRANS_DDI_PHSYNC;
+
+	if (cpu_transcoder == TRANSCODER_EDP) {
+		switch (pipe) {
+		default:
+			MISSING_CASE(pipe);
+			fallthrough;
+		case PIPE_A:
+			/* On Haswell, can only use the always-on power well for
+			 * eDP when not using the panel fitter, and when not
+			 * using motion blur mitigation (which we don't
+			 * support). */
+			if (crtc_state->pch_pfit.force_thru)
+				temp |= TRANS_DDI_EDP_INPUT_A_ONOFF;
+			else
+				temp |= TRANS_DDI_EDP_INPUT_A_ON;
+			break;
+		case PIPE_B:
+			temp |= TRANS_DDI_EDP_INPUT_B_ONOFF;
+			break;
+		case PIPE_C:
+			temp |= TRANS_DDI_EDP_INPUT_C_ONOFF;
+			break;
+		}
+	}
+
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) {
+		if (crtc_state->has_hdmi_sink)
+			temp |= TRANS_DDI_MODE_SELECT_HDMI;
+		else
+			temp |= TRANS_DDI_MODE_SELECT_DVI;
+
+		if (crtc_state->hdmi_scrambling)
+			temp |= TRANS_DDI_HDMI_SCRAMBLING;
+		if (crtc_state->hdmi_high_tmds_clock_ratio)
+			temp |= TRANS_DDI_HIGH_TMDS_CHAR_RATE;
+	} else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG)) {
+		temp |= TRANS_DDI_MODE_SELECT_FDI_OR_128B132B;
+		temp |= (crtc_state->fdi_lanes - 1) << 1;
+	} else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST)) {
+		if (intel_dp_is_uhbr(crtc_state))
+			temp |= TRANS_DDI_MODE_SELECT_FDI_OR_128B132B;
+		else
+			temp |= TRANS_DDI_MODE_SELECT_DP_MST;
+		temp |= DDI_PORT_WIDTH(crtc_state->lane_count);
+
+		if (DISPLAY_VER(dev_priv) >= 12) {
+			enum transcoder master;
+
+			master = crtc_state->mst_master_transcoder;
+			drm_WARN_ON(&dev_priv->drm,
+				    master == INVALID_TRANSCODER);
+			temp |= TRANS_DDI_MST_TRANSPORT_SELECT(master);
+		}
+	} else {
+		temp |= TRANS_DDI_MODE_SELECT_DP_SST;
+		temp |= DDI_PORT_WIDTH(crtc_state->lane_count);
+	}
+
+	if (IS_DISPLAY_VER(dev_priv, 8, 10) &&
+	    crtc_state->master_transcoder != INVALID_TRANSCODER) {
+		u8 master_select =
+			bdw_trans_port_sync_master_select(crtc_state->master_transcoder);
+
+		temp |= TRANS_DDI_PORT_SYNC_ENABLE |
+			TRANS_DDI_PORT_SYNC_MASTER_SELECT(master_select);
+	}
+
+	return temp;
+}
+
+void intel_ddi_enable_transcoder_func(struct intel_encoder *encoder,
+				      const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+
+	if (DISPLAY_VER(dev_priv) >= 11) {
+		enum transcoder master_transcoder = crtc_state->master_transcoder;
+		u32 ctl2 = 0;
+
+		if (master_transcoder != INVALID_TRANSCODER) {
+			u8 master_select =
+				bdw_trans_port_sync_master_select(master_transcoder);
+
+			ctl2 |= PORT_SYNC_MODE_ENABLE |
+				PORT_SYNC_MODE_MASTER_SELECT(master_select);
+		}
+
+		intel_de_write(dev_priv,
+			       TRANS_DDI_FUNC_CTL2(cpu_transcoder), ctl2);
+	}
+
+	intel_de_write(dev_priv, TRANS_DDI_FUNC_CTL(cpu_transcoder),
+		       intel_ddi_transcoder_func_reg_val_get(encoder,
+							     crtc_state));
+}
+
+/*
+ * Same as intel_ddi_enable_transcoder_func(), but it does not set the enable
+ * bit.
+ */
+static void
+intel_ddi_config_transcoder_func(struct intel_encoder *encoder,
+				 const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+	u32 ctl;
+
+	ctl = intel_ddi_transcoder_func_reg_val_get(encoder, crtc_state);
+	ctl &= ~TRANS_DDI_FUNC_ENABLE;
+	intel_de_write(dev_priv, TRANS_DDI_FUNC_CTL(cpu_transcoder), ctl);
+}
+
+void intel_ddi_disable_transcoder_func(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+	u32 ctl;
+
+	if (DISPLAY_VER(dev_priv) >= 11)
+		intel_de_write(dev_priv,
+			       TRANS_DDI_FUNC_CTL2(cpu_transcoder), 0);
+
+	ctl = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(cpu_transcoder));
+
+	drm_WARN_ON(crtc->base.dev, ctl & TRANS_DDI_HDCP_SIGNALLING);
+
+	ctl &= ~TRANS_DDI_FUNC_ENABLE;
+
+	if (IS_DISPLAY_VER(dev_priv, 8, 10))
+		ctl &= ~(TRANS_DDI_PORT_SYNC_ENABLE |
+			 TRANS_DDI_PORT_SYNC_MASTER_SELECT_MASK);
+
+	if (DISPLAY_VER(dev_priv) >= 12) {
+		if (!intel_dp_mst_is_master_trans(crtc_state)) {
+			ctl &= ~(TGL_TRANS_DDI_PORT_MASK |
+				 TRANS_DDI_MODE_SELECT_MASK);
+		}
+	} else {
+		ctl &= ~(TRANS_DDI_PORT_MASK | TRANS_DDI_MODE_SELECT_MASK);
+	}
+
+	intel_de_write(dev_priv, TRANS_DDI_FUNC_CTL(cpu_transcoder), ctl);
+
+	if (intel_has_quirk(dev_priv, QUIRK_INCREASE_DDI_DISABLED_TIME) &&
+	    intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Quirk Increase DDI disabled time\n");
+		/* Quirk time at 100ms for reliable operation */
+		msleep(100);
+	}
+}
+
+int intel_ddi_toggle_hdcp_bits(struct intel_encoder *intel_encoder,
+			       enum transcoder cpu_transcoder,
+			       bool enable, u32 hdcp_mask)
+{
+	struct drm_device *dev = intel_encoder->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	intel_wakeref_t wakeref;
+	int ret = 0;
+	u32 tmp;
+
+	wakeref = intel_display_power_get_if_enabled(dev_priv,
+						     intel_encoder->power_domain);
+	if (drm_WARN_ON(dev, !wakeref))
+		return -ENXIO;
+
+	tmp = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(cpu_transcoder));
+	if (enable)
+		tmp |= hdcp_mask;
+	else
+		tmp &= ~hdcp_mask;
+	intel_de_write(dev_priv, TRANS_DDI_FUNC_CTL(cpu_transcoder), tmp);
+	intel_display_power_put(dev_priv, intel_encoder->power_domain, wakeref);
+	return ret;
+}
+
+bool intel_ddi_connector_get_hw_state(struct intel_connector *intel_connector)
+{
+	struct drm_device *dev = intel_connector->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_encoder *encoder = intel_attached_encoder(intel_connector);
+	int type = intel_connector->base.connector_type;
+	enum port port = encoder->port;
+	enum transcoder cpu_transcoder;
+	intel_wakeref_t wakeref;
+	enum pipe pipe = 0;
+	u32 tmp;
+	bool ret;
+
+	wakeref = intel_display_power_get_if_enabled(dev_priv,
+						     encoder->power_domain);
+	if (!wakeref)
+		return false;
+
+	if (!encoder->get_hw_state(encoder, &pipe)) {
+		ret = false;
+		goto out;
+	}
+
+	if (HAS_TRANSCODER(dev_priv, TRANSCODER_EDP) && port == PORT_A)
+		cpu_transcoder = TRANSCODER_EDP;
+	else
+		cpu_transcoder = (enum transcoder) pipe;
+
+	tmp = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(cpu_transcoder));
+
+	switch (tmp & TRANS_DDI_MODE_SELECT_MASK) {
+	case TRANS_DDI_MODE_SELECT_HDMI:
+	case TRANS_DDI_MODE_SELECT_DVI:
+		ret = type == DRM_MODE_CONNECTOR_HDMIA;
+		break;
+
+	case TRANS_DDI_MODE_SELECT_DP_SST:
+		ret = type == DRM_MODE_CONNECTOR_eDP ||
+		      type == DRM_MODE_CONNECTOR_DisplayPort;
+		break;
+
+	case TRANS_DDI_MODE_SELECT_DP_MST:
+		/* if the transcoder is in MST state then
+		 * connector isn't connected */
+		ret = false;
+		break;
+
+	case TRANS_DDI_MODE_SELECT_FDI_OR_128B132B:
+		if (HAS_DP20(dev_priv))
+			/* 128b/132b */
+			ret = false;
+		else
+			/* FDI */
+			ret = type == DRM_MODE_CONNECTOR_VGA;
+		break;
+
+	default:
+		ret = false;
+		break;
+	}
+
+out:
+	intel_display_power_put(dev_priv, encoder->power_domain, wakeref);
+
+	return ret;
+}
+
+static void intel_ddi_get_encoder_pipes(struct intel_encoder *encoder,
+					u8 *pipe_mask, bool *is_dp_mst)
+{
+	struct drm_device *dev = encoder->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	enum port port = encoder->port;
+	intel_wakeref_t wakeref;
+	enum pipe p;
+	u32 tmp;
+	u8 mst_pipe_mask;
+
+	*pipe_mask = 0;
+	*is_dp_mst = false;
+
+	wakeref = intel_display_power_get_if_enabled(dev_priv,
+						     encoder->power_domain);
+	if (!wakeref)
+		return;
+
+	tmp = intel_de_read(dev_priv, DDI_BUF_CTL(port));
+	if (!(tmp & DDI_BUF_CTL_ENABLE))
+		goto out;
+
+	if (HAS_TRANSCODER(dev_priv, TRANSCODER_EDP) && port == PORT_A) {
+		tmp = intel_de_read(dev_priv,
+				    TRANS_DDI_FUNC_CTL(TRANSCODER_EDP));
+
+		switch (tmp & TRANS_DDI_EDP_INPUT_MASK) {
+		default:
+			MISSING_CASE(tmp & TRANS_DDI_EDP_INPUT_MASK);
+			fallthrough;
+		case TRANS_DDI_EDP_INPUT_A_ON:
+		case TRANS_DDI_EDP_INPUT_A_ONOFF:
+			*pipe_mask = BIT(PIPE_A);
+			break;
+		case TRANS_DDI_EDP_INPUT_B_ONOFF:
+			*pipe_mask = BIT(PIPE_B);
+			break;
+		case TRANS_DDI_EDP_INPUT_C_ONOFF:
+			*pipe_mask = BIT(PIPE_C);
+			break;
+		}
+
+		goto out;
+	}
+
+	mst_pipe_mask = 0;
+	for_each_pipe(dev_priv, p) {
+		enum transcoder cpu_transcoder = (enum transcoder)p;
+		unsigned int port_mask, ddi_select;
+		intel_wakeref_t trans_wakeref;
+
+		trans_wakeref = intel_display_power_get_if_enabled(dev_priv,
+								   POWER_DOMAIN_TRANSCODER(cpu_transcoder));
+		if (!trans_wakeref)
+			continue;
+
+		if (DISPLAY_VER(dev_priv) >= 12) {
+			port_mask = TGL_TRANS_DDI_PORT_MASK;
+			ddi_select = TGL_TRANS_DDI_SELECT_PORT(port);
+		} else {
+			port_mask = TRANS_DDI_PORT_MASK;
+			ddi_select = TRANS_DDI_SELECT_PORT(port);
+		}
+
+		tmp = intel_de_read(dev_priv,
+				    TRANS_DDI_FUNC_CTL(cpu_transcoder));
+		intel_display_power_put(dev_priv, POWER_DOMAIN_TRANSCODER(cpu_transcoder),
+					trans_wakeref);
+
+		if ((tmp & port_mask) != ddi_select)
+			continue;
+
+		if ((tmp & TRANS_DDI_MODE_SELECT_MASK) == TRANS_DDI_MODE_SELECT_DP_MST ||
+		    (HAS_DP20(dev_priv) &&
+		     (tmp & TRANS_DDI_MODE_SELECT_MASK) == TRANS_DDI_MODE_SELECT_FDI_OR_128B132B))
+			mst_pipe_mask |= BIT(p);
+
+		*pipe_mask |= BIT(p);
+	}
+
+	if (!*pipe_mask)
+		drm_dbg_kms(&dev_priv->drm,
+			    "No pipe for [ENCODER:%d:%s] found\n",
+			    encoder->base.base.id, encoder->base.name);
+
+	if (!mst_pipe_mask && hweight8(*pipe_mask) > 1) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Multiple pipes for [ENCODER:%d:%s] (pipe_mask %02x)\n",
+			    encoder->base.base.id, encoder->base.name,
+			    *pipe_mask);
+		*pipe_mask = BIT(ffs(*pipe_mask) - 1);
+	}
+
+	if (mst_pipe_mask && mst_pipe_mask != *pipe_mask)
+		drm_dbg_kms(&dev_priv->drm,
+			    "Conflicting MST and non-MST state for [ENCODER:%d:%s] (pipe_mask %02x mst_pipe_mask %02x)\n",
+			    encoder->base.base.id, encoder->base.name,
+			    *pipe_mask, mst_pipe_mask);
+	else
+		*is_dp_mst = mst_pipe_mask;
+
+out:
+	if (*pipe_mask && (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))) {
+		tmp = intel_de_read(dev_priv, BXT_PHY_CTL(port));
+		if ((tmp & (BXT_PHY_CMNLANE_POWERDOWN_ACK |
+			    BXT_PHY_LANE_POWERDOWN_ACK |
+			    BXT_PHY_LANE_ENABLED)) != BXT_PHY_LANE_ENABLED)
+			drm_err(&dev_priv->drm,
+				"[ENCODER:%d:%s] enabled but PHY powered down? (PHY_CTL %08x)\n",
+				encoder->base.base.id, encoder->base.name, tmp);
+	}
+
+	intel_display_power_put(dev_priv, encoder->power_domain, wakeref);
+}
+
+bool intel_ddi_get_hw_state(struct intel_encoder *encoder,
+			    enum pipe *pipe)
+{
+	u8 pipe_mask;
+	bool is_mst;
+
+	intel_ddi_get_encoder_pipes(encoder, &pipe_mask, &is_mst);
+
+	if (is_mst || !pipe_mask)
+		return false;
+
+	*pipe = ffs(pipe_mask) - 1;
+
+	return true;
+}
+
+static enum intel_display_power_domain
+intel_ddi_main_link_aux_domain(struct intel_digital_port *dig_port)
+{
+	/* ICL+ HW requires corresponding AUX IOs to be powered up for PSR with
+	 * DC states enabled at the same time, while for driver initiated AUX
+	 * transfers we need the same AUX IOs to be powered but with DC states
+	 * disabled. Accordingly use the AUX power domain here which leaves DC
+	 * states enabled.
+	 * However, for non-A AUX ports the corresponding non-EDP transcoders
+	 * would have already enabled power well 2 and DC_OFF. This means we can
+	 * acquire a wider POWER_DOMAIN_AUX_{B,C,D,F} reference instead of a
+	 * specific AUX_IO reference without powering up any extra wells.
+	 * Note that PSR is enabled only on Port A even though this function
+	 * returns the correct domain for other ports too.
+	 */
+	return dig_port->aux_ch == AUX_CH_A ? POWER_DOMAIN_AUX_IO_A :
+					      intel_aux_power_domain(dig_port);
+}
+
+static void intel_ddi_get_power_domains(struct intel_encoder *encoder,
+					struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_digital_port *dig_port;
+	enum phy phy = intel_port_to_phy(dev_priv, encoder->port);
+
+	/*
+	 * TODO: Add support for MST encoders. Atm, the following should never
+	 * happen since fake-MST encoders don't set their get_power_domains()
+	 * hook.
+	 */
+	if (drm_WARN_ON(&dev_priv->drm,
+			intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST)))
+		return;
+
+	dig_port = enc_to_dig_port(encoder);
+
+	if (!intel_tc_port_in_tbt_alt_mode(dig_port)) {
+		drm_WARN_ON(&dev_priv->drm, dig_port->ddi_io_wakeref);
+		dig_port->ddi_io_wakeref = intel_display_power_get(dev_priv,
+								   dig_port->ddi_io_power_domain);
+	}
+
+	/*
+	 * AUX power is only needed for (e)DP mode, and for HDMI mode on TC
+	 * ports.
+	 */
+	if (intel_crtc_has_dp_encoder(crtc_state) ||
+	    intel_phy_is_tc(dev_priv, phy)) {
+		drm_WARN_ON(&dev_priv->drm, dig_port->aux_wakeref);
+		dig_port->aux_wakeref =
+			intel_display_power_get(dev_priv,
+						intel_ddi_main_link_aux_domain(dig_port));
+	}
+}
+
+void intel_ddi_enable_pipe_clock(struct intel_encoder *encoder,
+				 const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+	enum phy phy = intel_port_to_phy(dev_priv, encoder->port);
+	u32 val;
+
+	if (cpu_transcoder != TRANSCODER_EDP) {
+		if (DISPLAY_VER(dev_priv) >= 13)
+			val = TGL_TRANS_CLK_SEL_PORT(phy);
+		else if (DISPLAY_VER(dev_priv) >= 12)
+			val = TGL_TRANS_CLK_SEL_PORT(encoder->port);
+		else
+			val = TRANS_CLK_SEL_PORT(encoder->port);
+
+		intel_de_write(dev_priv, TRANS_CLK_SEL(cpu_transcoder), val);
+	}
+}
+
+void intel_ddi_disable_pipe_clock(const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+
+	if (cpu_transcoder != TRANSCODER_EDP) {
+		if (DISPLAY_VER(dev_priv) >= 12)
+			intel_de_write(dev_priv,
+				       TRANS_CLK_SEL(cpu_transcoder),
+				       TGL_TRANS_CLK_SEL_DISABLED);
+		else
+			intel_de_write(dev_priv,
+				       TRANS_CLK_SEL(cpu_transcoder),
+				       TRANS_CLK_SEL_DISABLED);
+	}
+}
+
+static void _skl_ddi_set_iboost(struct drm_i915_private *dev_priv,
+				enum port port, u8 iboost)
+{
+	u32 tmp;
+
+	tmp = intel_de_read(dev_priv, DISPIO_CR_TX_BMU_CR0);
+	tmp &= ~(BALANCE_LEG_MASK(port) | BALANCE_LEG_DISABLE(port));
+	if (iboost)
+		tmp |= iboost << BALANCE_LEG_SHIFT(port);
+	else
+		tmp |= BALANCE_LEG_DISABLE(port);
+	intel_de_write(dev_priv, DISPIO_CR_TX_BMU_CR0, tmp);
+}
+
+static void skl_ddi_set_iboost(struct intel_encoder *encoder,
+			       const struct intel_crtc_state *crtc_state,
+			       int level)
+{
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	u8 iboost;
+
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		iboost = intel_bios_encoder_hdmi_boost_level(encoder->devdata);
+	else
+		iboost = intel_bios_encoder_dp_boost_level(encoder->devdata);
+
+	if (iboost == 0) {
+		const struct intel_ddi_buf_trans *trans;
+		int n_entries;
+
+		trans = encoder->get_buf_trans(encoder, crtc_state, &n_entries);
+		if (drm_WARN_ON_ONCE(&dev_priv->drm, !trans))
+			return;
+
+		iboost = trans->entries[level].hsw.i_boost;
+	}
+
+	/* Make sure that the requested I_boost is valid */
+	if (iboost && iboost != 0x1 && iboost != 0x3 && iboost != 0x7) {
+		drm_err(&dev_priv->drm, "Invalid I_boost value %u\n", iboost);
+		return;
+	}
+
+	_skl_ddi_set_iboost(dev_priv, encoder->port, iboost);
+
+	if (encoder->port == PORT_A && dig_port->max_lanes == 4)
+		_skl_ddi_set_iboost(dev_priv, PORT_E, iboost);
+}
+
+static u8 intel_ddi_dp_voltage_max(struct intel_dp *intel_dp,
+				   const struct intel_crtc_state *crtc_state)
+{
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	int n_entries;
+
+	encoder->get_buf_trans(encoder, crtc_state, &n_entries);
+
+	if (drm_WARN_ON(&dev_priv->drm, n_entries < 1))
+		n_entries = 1;
+	if (drm_WARN_ON(&dev_priv->drm,
+			n_entries > ARRAY_SIZE(index_to_dp_signal_levels)))
+		n_entries = ARRAY_SIZE(index_to_dp_signal_levels);
+
+	return index_to_dp_signal_levels[n_entries - 1] &
+		DP_TRAIN_VOLTAGE_SWING_MASK;
+}
+
+/*
+ * We assume that the full set of pre-emphasis values can be
+ * used on all DDI platforms. Should that change we need to
+ * rethink this code.
+ */
+static u8 intel_ddi_dp_preemph_max(struct intel_dp *intel_dp)
+{
+	return DP_TRAIN_PRE_EMPH_LEVEL_3;
+}
+
+static u32 icl_combo_phy_loadgen_select(const struct intel_crtc_state *crtc_state,
+					int lane)
+{
+	if (crtc_state->port_clock > 600000)
+		return 0;
+
+	if (crtc_state->lane_count == 4)
+		return lane >= 1 ? LOADGEN_SELECT : 0;
+	else
+		return lane == 1 || lane == 2 ? LOADGEN_SELECT : 0;
+}
+
+static void icl_ddi_combo_vswing_program(struct intel_encoder *encoder,
+					 const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	const struct intel_ddi_buf_trans *trans;
+	enum phy phy = intel_port_to_phy(dev_priv, encoder->port);
+	int n_entries, ln;
+	u32 val;
+
+	trans = encoder->get_buf_trans(encoder, crtc_state, &n_entries);
+	if (drm_WARN_ON_ONCE(&dev_priv->drm, !trans))
+		return;
+
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP)) {
+		struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+
+		val = EDP4K2K_MODE_OVRD_EN | EDP4K2K_MODE_OVRD_OPTIMIZED;
+		intel_dp->hobl_active = is_hobl_buf_trans(trans);
+		intel_de_rmw(dev_priv, ICL_PORT_CL_DW10(phy), val,
+			     intel_dp->hobl_active ? val : 0);
+	}
+
+	/* Set PORT_TX_DW5 */
+	val = intel_de_read(dev_priv, ICL_PORT_TX_DW5_LN(0, phy));
+	val &= ~(SCALING_MODE_SEL_MASK | RTERM_SELECT_MASK |
+		  TAP2_DISABLE | TAP3_DISABLE);
+	val |= SCALING_MODE_SEL(0x2);
+	val |= RTERM_SELECT(0x6);
+	val |= TAP3_DISABLE;
+	intel_de_write(dev_priv, ICL_PORT_TX_DW5_GRP(phy), val);
+
+	/* Program PORT_TX_DW2 */
+	for (ln = 0; ln < 4; ln++) {
+		int level = intel_ddi_level(encoder, crtc_state, ln);
+
+		intel_de_rmw(dev_priv, ICL_PORT_TX_DW2_LN(ln, phy),
+			     SWING_SEL_UPPER_MASK | SWING_SEL_LOWER_MASK | RCOMP_SCALAR_MASK,
+			     SWING_SEL_UPPER(trans->entries[level].icl.dw2_swing_sel) |
+			     SWING_SEL_LOWER(trans->entries[level].icl.dw2_swing_sel) |
+			     RCOMP_SCALAR(0x98));
+	}
+
+	/* Program PORT_TX_DW4 */
+	/* We cannot write to GRP. It would overwrite individual loadgen. */
+	for (ln = 0; ln < 4; ln++) {
+		int level = intel_ddi_level(encoder, crtc_state, ln);
+
+		intel_de_rmw(dev_priv, ICL_PORT_TX_DW4_LN(ln, phy),
+			     POST_CURSOR_1_MASK | POST_CURSOR_2_MASK | CURSOR_COEFF_MASK,
+			     POST_CURSOR_1(trans->entries[level].icl.dw4_post_cursor_1) |
+			     POST_CURSOR_2(trans->entries[level].icl.dw4_post_cursor_2) |
+			     CURSOR_COEFF(trans->entries[level].icl.dw4_cursor_coeff));
+	}
+
+	/* Program PORT_TX_DW7 */
+	for (ln = 0; ln < 4; ln++) {
+		int level = intel_ddi_level(encoder, crtc_state, ln);
+
+		intel_de_rmw(dev_priv, ICL_PORT_TX_DW7_LN(ln, phy),
+			     N_SCALAR_MASK,
+			     N_SCALAR(trans->entries[level].icl.dw7_n_scalar));
+	}
+}
+
+static void icl_combo_phy_set_signal_levels(struct intel_encoder *encoder,
+					    const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	enum phy phy = intel_port_to_phy(dev_priv, encoder->port);
+	u32 val;
+	int ln;
+
+	/*
+	 * 1. If port type is eDP or DP,
+	 * set PORT_PCS_DW1 cmnkeeper_enable to 1b,
+	 * else clear to 0b.
+	 */
+	val = intel_de_read(dev_priv, ICL_PORT_PCS_DW1_LN(0, phy));
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		val &= ~COMMON_KEEPER_EN;
+	else
+		val |= COMMON_KEEPER_EN;
+	intel_de_write(dev_priv, ICL_PORT_PCS_DW1_GRP(phy), val);
+
+	/* 2. Program loadgen select */
+	/*
+	 * Program PORT_TX_DW4 depending on Bit rate and used lanes
+	 * <= 6 GHz and 4 lanes (LN0=0, LN1=1, LN2=1, LN3=1)
+	 * <= 6 GHz and 1,2 lanes (LN0=0, LN1=1, LN2=1, LN3=0)
+	 * > 6 GHz (LN0=0, LN1=0, LN2=0, LN3=0)
+	 */
+	for (ln = 0; ln < 4; ln++) {
+		intel_de_rmw(dev_priv, ICL_PORT_TX_DW4_LN(ln, phy),
+			     LOADGEN_SELECT,
+			     icl_combo_phy_loadgen_select(crtc_state, ln));
+	}
+
+	/* 3. Set PORT_CL_DW5 SUS Clock Config to 11b */
+	intel_de_rmw(dev_priv, ICL_PORT_CL_DW5(phy),
+		     0, SUS_CLOCK_CONFIG);
+
+	/* 4. Clear training enable to change swing values */
+	val = intel_de_read(dev_priv, ICL_PORT_TX_DW5_LN(0, phy));
+	val &= ~TX_TRAINING_EN;
+	intel_de_write(dev_priv, ICL_PORT_TX_DW5_GRP(phy), val);
+
+	/* 5. Program swing and de-emphasis */
+	icl_ddi_combo_vswing_program(encoder, crtc_state);
+
+	/* 6. Set training enable to trigger update */
+	val = intel_de_read(dev_priv, ICL_PORT_TX_DW5_LN(0, phy));
+	val |= TX_TRAINING_EN;
+	intel_de_write(dev_priv, ICL_PORT_TX_DW5_GRP(phy), val);
+}
+
+static void icl_mg_phy_set_signal_levels(struct intel_encoder *encoder,
+					 const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	enum tc_port tc_port = intel_port_to_tc(dev_priv, encoder->port);
+	const struct intel_ddi_buf_trans *trans;
+	int n_entries, ln;
+
+	if (intel_tc_port_in_tbt_alt_mode(enc_to_dig_port(encoder)))
+		return;
+
+	trans = encoder->get_buf_trans(encoder, crtc_state, &n_entries);
+	if (drm_WARN_ON_ONCE(&dev_priv->drm, !trans))
+		return;
+
+	for (ln = 0; ln < 2; ln++) {
+		intel_de_rmw(dev_priv, MG_TX1_LINK_PARAMS(ln, tc_port),
+			     CRI_USE_FS32, 0);
+		intel_de_rmw(dev_priv, MG_TX2_LINK_PARAMS(ln, tc_port),
+			     CRI_USE_FS32, 0);
+	}
+
+	/* Program MG_TX_SWINGCTRL with values from vswing table */
+	for (ln = 0; ln < 2; ln++) {
+		int level;
+
+		level = intel_ddi_level(encoder, crtc_state, 2*ln+0);
+
+		intel_de_rmw(dev_priv, MG_TX1_SWINGCTRL(ln, tc_port),
+			     CRI_TXDEEMPH_OVERRIDE_17_12_MASK,
+			     CRI_TXDEEMPH_OVERRIDE_17_12(trans->entries[level].mg.cri_txdeemph_override_17_12));
+
+		level = intel_ddi_level(encoder, crtc_state, 2*ln+1);
+
+		intel_de_rmw(dev_priv, MG_TX2_SWINGCTRL(ln, tc_port),
+			     CRI_TXDEEMPH_OVERRIDE_17_12_MASK,
+			     CRI_TXDEEMPH_OVERRIDE_17_12(trans->entries[level].mg.cri_txdeemph_override_17_12));
+	}
+
+	/* Program MG_TX_DRVCTRL with values from vswing table */
+	for (ln = 0; ln < 2; ln++) {
+		int level;
+
+		level = intel_ddi_level(encoder, crtc_state, 2*ln+0);
+
+		intel_de_rmw(dev_priv, MG_TX1_DRVCTRL(ln, tc_port),
+			     CRI_TXDEEMPH_OVERRIDE_11_6_MASK |
+			     CRI_TXDEEMPH_OVERRIDE_5_0_MASK,
+			     CRI_TXDEEMPH_OVERRIDE_11_6(trans->entries[level].mg.cri_txdeemph_override_11_6) |
+			     CRI_TXDEEMPH_OVERRIDE_5_0(trans->entries[level].mg.cri_txdeemph_override_5_0) |
+			     CRI_TXDEEMPH_OVERRIDE_EN);
+
+		level = intel_ddi_level(encoder, crtc_state, 2*ln+1);
+
+		intel_de_rmw(dev_priv, MG_TX2_DRVCTRL(ln, tc_port),
+			     CRI_TXDEEMPH_OVERRIDE_11_6_MASK |
+			     CRI_TXDEEMPH_OVERRIDE_5_0_MASK,
+			     CRI_TXDEEMPH_OVERRIDE_11_6(trans->entries[level].mg.cri_txdeemph_override_11_6) |
+			     CRI_TXDEEMPH_OVERRIDE_5_0(trans->entries[level].mg.cri_txdeemph_override_5_0) |
+			     CRI_TXDEEMPH_OVERRIDE_EN);
+
+		/* FIXME: Program CRI_LOADGEN_SEL after the spec is updated */
+	}
+
+	/*
+	 * Program MG_CLKHUB<LN, port being used> with value from frequency table
+	 * In case of Legacy mode on MG PHY, both TX1 and TX2 enabled so use the
+	 * values from table for which TX1 and TX2 enabled.
+	 */
+	for (ln = 0; ln < 2; ln++) {
+		intel_de_rmw(dev_priv, MG_CLKHUB(ln, tc_port),
+			     CFG_LOW_RATE_LKREN_EN,
+			     crtc_state->port_clock < 300000 ? CFG_LOW_RATE_LKREN_EN : 0);
+	}
+
+	/* Program the MG_TX_DCC<LN, port being used> based on the link frequency */
+	for (ln = 0; ln < 2; ln++) {
+		intel_de_rmw(dev_priv, MG_TX1_DCC(ln, tc_port),
+			     CFG_AMI_CK_DIV_OVERRIDE_VAL_MASK |
+			     CFG_AMI_CK_DIV_OVERRIDE_EN,
+			     crtc_state->port_clock > 500000 ?
+			     CFG_AMI_CK_DIV_OVERRIDE_VAL(1) |
+			     CFG_AMI_CK_DIV_OVERRIDE_EN : 0);
+
+		intel_de_rmw(dev_priv, MG_TX2_DCC(ln, tc_port),
+			     CFG_AMI_CK_DIV_OVERRIDE_VAL_MASK |
+			     CFG_AMI_CK_DIV_OVERRIDE_EN,
+			     crtc_state->port_clock > 500000 ?
+			     CFG_AMI_CK_DIV_OVERRIDE_VAL(1) |
+			     CFG_AMI_CK_DIV_OVERRIDE_EN : 0);
+	}
+
+	/* Program MG_TX_PISO_READLOAD with values from vswing table */
+	for (ln = 0; ln < 2; ln++) {
+		intel_de_rmw(dev_priv, MG_TX1_PISO_READLOAD(ln, tc_port),
+			     0, CRI_CALCINIT);
+		intel_de_rmw(dev_priv, MG_TX2_PISO_READLOAD(ln, tc_port),
+			     0, CRI_CALCINIT);
+	}
+}
+
+static void tgl_dkl_phy_set_signal_levels(struct intel_encoder *encoder,
+					  const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	enum tc_port tc_port = intel_port_to_tc(dev_priv, encoder->port);
+	const struct intel_ddi_buf_trans *trans;
+	int n_entries, ln;
+
+	if (intel_tc_port_in_tbt_alt_mode(enc_to_dig_port(encoder)))
+		return;
+
+	trans = encoder->get_buf_trans(encoder, crtc_state, &n_entries);
+	if (drm_WARN_ON_ONCE(&dev_priv->drm, !trans))
+		return;
+
+	for (ln = 0; ln < 2; ln++) {
+		int level;
+
+		intel_dkl_phy_write(dev_priv, DKL_TX_PMD_LANE_SUS(tc_port), ln, 0);
+
+		level = intel_ddi_level(encoder, crtc_state, 2*ln+0);
+
+		intel_dkl_phy_rmw(dev_priv, DKL_TX_DPCNTL0(tc_port), ln,
+				  DKL_TX_PRESHOOT_COEFF_MASK |
+				  DKL_TX_DE_EMPAHSIS_COEFF_MASK |
+				  DKL_TX_VSWING_CONTROL_MASK,
+				  DKL_TX_PRESHOOT_COEFF(trans->entries[level].dkl.preshoot) |
+				  DKL_TX_DE_EMPHASIS_COEFF(trans->entries[level].dkl.de_emphasis) |
+				  DKL_TX_VSWING_CONTROL(trans->entries[level].dkl.vswing));
+
+		level = intel_ddi_level(encoder, crtc_state, 2*ln+1);
+
+		intel_dkl_phy_rmw(dev_priv, DKL_TX_DPCNTL1(tc_port), ln,
+				  DKL_TX_PRESHOOT_COEFF_MASK |
+				  DKL_TX_DE_EMPAHSIS_COEFF_MASK |
+				  DKL_TX_VSWING_CONTROL_MASK,
+				  DKL_TX_PRESHOOT_COEFF(trans->entries[level].dkl.preshoot) |
+				  DKL_TX_DE_EMPHASIS_COEFF(trans->entries[level].dkl.de_emphasis) |
+				  DKL_TX_VSWING_CONTROL(trans->entries[level].dkl.vswing));
+
+		intel_dkl_phy_rmw(dev_priv, DKL_TX_DPCNTL2(tc_port), ln,
+				  DKL_TX_DP20BITMODE, 0);
+
+		if (IS_ALDERLAKE_P(dev_priv)) {
+			u32 val;
+
+			if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) {
+				if (ln == 0) {
+					val = DKL_TX_DPCNTL2_CFG_LOADGENSELECT_TX1(0);
+					val |= DKL_TX_DPCNTL2_CFG_LOADGENSELECT_TX2(2);
+				} else {
+					val = DKL_TX_DPCNTL2_CFG_LOADGENSELECT_TX1(3);
+					val |= DKL_TX_DPCNTL2_CFG_LOADGENSELECT_TX2(3);
+				}
+			} else {
+				val = DKL_TX_DPCNTL2_CFG_LOADGENSELECT_TX1(0);
+				val |= DKL_TX_DPCNTL2_CFG_LOADGENSELECT_TX2(0);
+			}
+
+			intel_dkl_phy_rmw(dev_priv, DKL_TX_DPCNTL2(tc_port), ln,
+					  DKL_TX_DPCNTL2_CFG_LOADGENSELECT_TX1_MASK |
+					  DKL_TX_DPCNTL2_CFG_LOADGENSELECT_TX2_MASK,
+					  val);
+		}
+	}
+}
+
+static int translate_signal_level(struct intel_dp *intel_dp,
+				  u8 signal_levels)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(index_to_dp_signal_levels); i++) {
+		if (index_to_dp_signal_levels[i] == signal_levels)
+			return i;
+	}
+
+	drm_WARN(&i915->drm, 1,
+		 "Unsupported voltage swing/pre-emphasis level: 0x%x\n",
+		 signal_levels);
+
+	return 0;
+}
+
+static int intel_ddi_dp_level(struct intel_dp *intel_dp,
+			      const struct intel_crtc_state *crtc_state,
+			      int lane)
+{
+	u8 train_set = intel_dp->train_set[lane];
+
+	if (intel_dp_is_uhbr(crtc_state)) {
+		return train_set & DP_TX_FFE_PRESET_VALUE_MASK;
+	} else {
+		u8 signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK |
+						DP_TRAIN_PRE_EMPHASIS_MASK);
+
+		return translate_signal_level(intel_dp, signal_levels);
+	}
+}
+
+int intel_ddi_level(struct intel_encoder *encoder,
+		    const struct intel_crtc_state *crtc_state,
+		    int lane)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	const struct intel_ddi_buf_trans *trans;
+	int level, n_entries;
+
+	trans = encoder->get_buf_trans(encoder, crtc_state, &n_entries);
+	if (drm_WARN_ON_ONCE(&i915->drm, !trans))
+		return 0;
+
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		level = intel_ddi_hdmi_level(encoder, trans);
+	else
+		level = intel_ddi_dp_level(enc_to_intel_dp(encoder), crtc_state,
+					   lane);
+
+	if (drm_WARN_ON_ONCE(&i915->drm, level >= n_entries))
+		level = n_entries - 1;
+
+	return level;
+}
+
+static void
+hsw_set_signal_levels(struct intel_encoder *encoder,
+		      const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	int level = intel_ddi_level(encoder, crtc_state, 0);
+	enum port port = encoder->port;
+	u32 signal_levels;
+
+	if (has_iboost(dev_priv))
+		skl_ddi_set_iboost(encoder, crtc_state, level);
+
+	/* HDMI ignores the rest */
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		return;
+
+	signal_levels = DDI_BUF_TRANS_SELECT(level);
+
+	drm_dbg_kms(&dev_priv->drm, "Using signal levels %08x\n",
+		    signal_levels);
+
+	intel_dp->DP &= ~DDI_BUF_EMP_MASK;
+	intel_dp->DP |= signal_levels;
+
+	intel_de_write(dev_priv, DDI_BUF_CTL(port), intel_dp->DP);
+	intel_de_posting_read(dev_priv, DDI_BUF_CTL(port));
+}
+
+static void _icl_ddi_enable_clock(struct drm_i915_private *i915, i915_reg_t reg,
+				  u32 clk_sel_mask, u32 clk_sel, u32 clk_off)
+{
+	mutex_lock(&i915->display.dpll.lock);
+
+	intel_de_rmw(i915, reg, clk_sel_mask, clk_sel);
+
+	/*
+	 * "This step and the step before must be
+	 *  done with separate register writes."
+	 */
+	intel_de_rmw(i915, reg, clk_off, 0);
+
+	mutex_unlock(&i915->display.dpll.lock);
+}
+
+static void _icl_ddi_disable_clock(struct drm_i915_private *i915, i915_reg_t reg,
+				   u32 clk_off)
+{
+	mutex_lock(&i915->display.dpll.lock);
+
+	intel_de_rmw(i915, reg, 0, clk_off);
+
+	mutex_unlock(&i915->display.dpll.lock);
+}
+
+static bool _icl_ddi_is_clock_enabled(struct drm_i915_private *i915, i915_reg_t reg,
+				      u32 clk_off)
+{
+	return !(intel_de_read(i915, reg) & clk_off);
+}
+
+static struct intel_shared_dpll *
+_icl_ddi_get_pll(struct drm_i915_private *i915, i915_reg_t reg,
+		 u32 clk_sel_mask, u32 clk_sel_shift)
+{
+	enum intel_dpll_id id;
+
+	id = (intel_de_read(i915, reg) & clk_sel_mask) >> clk_sel_shift;
+
+	return intel_get_shared_dpll_by_id(i915, id);
+}
+
+static void adls_ddi_enable_clock(struct intel_encoder *encoder,
+				  const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	const struct intel_shared_dpll *pll = crtc_state->shared_dpll;
+	enum phy phy = intel_port_to_phy(i915, encoder->port);
+
+	if (drm_WARN_ON(&i915->drm, !pll))
+		return;
+
+	_icl_ddi_enable_clock(i915, ADLS_DPCLKA_CFGCR(phy),
+			      ADLS_DPCLKA_CFGCR_DDI_CLK_SEL_MASK(phy),
+			      pll->info->id << ADLS_DPCLKA_CFGCR_DDI_SHIFT(phy),
+			      ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy));
+}
+
+static void adls_ddi_disable_clock(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum phy phy = intel_port_to_phy(i915, encoder->port);
+
+	_icl_ddi_disable_clock(i915, ADLS_DPCLKA_CFGCR(phy),
+			       ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy));
+}
+
+static bool adls_ddi_is_clock_enabled(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum phy phy = intel_port_to_phy(i915, encoder->port);
+
+	return _icl_ddi_is_clock_enabled(i915, ADLS_DPCLKA_CFGCR(phy),
+					 ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy));
+}
+
+static struct intel_shared_dpll *adls_ddi_get_pll(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum phy phy = intel_port_to_phy(i915, encoder->port);
+
+	return _icl_ddi_get_pll(i915, ADLS_DPCLKA_CFGCR(phy),
+				ADLS_DPCLKA_CFGCR_DDI_CLK_SEL_MASK(phy),
+				ADLS_DPCLKA_CFGCR_DDI_SHIFT(phy));
+}
+
+static void rkl_ddi_enable_clock(struct intel_encoder *encoder,
+				 const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	const struct intel_shared_dpll *pll = crtc_state->shared_dpll;
+	enum phy phy = intel_port_to_phy(i915, encoder->port);
+
+	if (drm_WARN_ON(&i915->drm, !pll))
+		return;
+
+	_icl_ddi_enable_clock(i915, ICL_DPCLKA_CFGCR0,
+			      RKL_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy),
+			      RKL_DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, phy),
+			      RKL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy));
+}
+
+static void rkl_ddi_disable_clock(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum phy phy = intel_port_to_phy(i915, encoder->port);
+
+	_icl_ddi_disable_clock(i915, ICL_DPCLKA_CFGCR0,
+			       RKL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy));
+}
+
+static bool rkl_ddi_is_clock_enabled(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum phy phy = intel_port_to_phy(i915, encoder->port);
+
+	return _icl_ddi_is_clock_enabled(i915, ICL_DPCLKA_CFGCR0,
+					 RKL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy));
+}
+
+static struct intel_shared_dpll *rkl_ddi_get_pll(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum phy phy = intel_port_to_phy(i915, encoder->port);
+
+	return _icl_ddi_get_pll(i915, ICL_DPCLKA_CFGCR0,
+				RKL_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy),
+				RKL_DPCLKA_CFGCR0_DDI_CLK_SEL_SHIFT(phy));
+}
+
+static void dg1_ddi_enable_clock(struct intel_encoder *encoder,
+				 const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	const struct intel_shared_dpll *pll = crtc_state->shared_dpll;
+	enum phy phy = intel_port_to_phy(i915, encoder->port);
+
+	if (drm_WARN_ON(&i915->drm, !pll))
+		return;
+
+	/*
+	 * If we fail this, something went very wrong: first 2 PLLs should be
+	 * used by first 2 phys and last 2 PLLs by last phys
+	 */
+	if (drm_WARN_ON(&i915->drm,
+			(pll->info->id < DPLL_ID_DG1_DPLL2 && phy >= PHY_C) ||
+			(pll->info->id >= DPLL_ID_DG1_DPLL2 && phy < PHY_C)))
+		return;
+
+	_icl_ddi_enable_clock(i915, DG1_DPCLKA_CFGCR0(phy),
+			      DG1_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy),
+			      DG1_DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, phy),
+			      DG1_DPCLKA_CFGCR0_DDI_CLK_OFF(phy));
+}
+
+static void dg1_ddi_disable_clock(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum phy phy = intel_port_to_phy(i915, encoder->port);
+
+	_icl_ddi_disable_clock(i915, DG1_DPCLKA_CFGCR0(phy),
+			       DG1_DPCLKA_CFGCR0_DDI_CLK_OFF(phy));
+}
+
+static bool dg1_ddi_is_clock_enabled(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum phy phy = intel_port_to_phy(i915, encoder->port);
+
+	return _icl_ddi_is_clock_enabled(i915, DG1_DPCLKA_CFGCR0(phy),
+					 DG1_DPCLKA_CFGCR0_DDI_CLK_OFF(phy));
+}
+
+static struct intel_shared_dpll *dg1_ddi_get_pll(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum phy phy = intel_port_to_phy(i915, encoder->port);
+	enum intel_dpll_id id;
+	u32 val;
+
+	val = intel_de_read(i915, DG1_DPCLKA_CFGCR0(phy));
+	val &= DG1_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy);
+	val >>= DG1_DPCLKA_CFGCR0_DDI_CLK_SEL_SHIFT(phy);
+	id = val;
+
+	/*
+	 * _DG1_DPCLKA0_CFGCR0 maps between DPLL 0 and 1 with one bit for phy A
+	 * and B while _DG1_DPCLKA1_CFGCR0 maps between DPLL 2 and 3 with one
+	 * bit for phy C and D.
+	 */
+	if (phy >= PHY_C)
+		id += DPLL_ID_DG1_DPLL2;
+
+	return intel_get_shared_dpll_by_id(i915, id);
+}
+
+static void icl_ddi_combo_enable_clock(struct intel_encoder *encoder,
+				       const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	const struct intel_shared_dpll *pll = crtc_state->shared_dpll;
+	enum phy phy = intel_port_to_phy(i915, encoder->port);
+
+	if (drm_WARN_ON(&i915->drm, !pll))
+		return;
+
+	_icl_ddi_enable_clock(i915, ICL_DPCLKA_CFGCR0,
+			      ICL_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy),
+			      ICL_DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, phy),
+			      ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy));
+}
+
+static void icl_ddi_combo_disable_clock(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum phy phy = intel_port_to_phy(i915, encoder->port);
+
+	_icl_ddi_disable_clock(i915, ICL_DPCLKA_CFGCR0,
+			       ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy));
+}
+
+static bool icl_ddi_combo_is_clock_enabled(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum phy phy = intel_port_to_phy(i915, encoder->port);
+
+	return _icl_ddi_is_clock_enabled(i915, ICL_DPCLKA_CFGCR0,
+					 ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy));
+}
+
+struct intel_shared_dpll *icl_ddi_combo_get_pll(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum phy phy = intel_port_to_phy(i915, encoder->port);
+
+	return _icl_ddi_get_pll(i915, ICL_DPCLKA_CFGCR0,
+				ICL_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy),
+				ICL_DPCLKA_CFGCR0_DDI_CLK_SEL_SHIFT(phy));
+}
+
+static void jsl_ddi_tc_enable_clock(struct intel_encoder *encoder,
+				    const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	const struct intel_shared_dpll *pll = crtc_state->shared_dpll;
+	enum port port = encoder->port;
+
+	if (drm_WARN_ON(&i915->drm, !pll))
+		return;
+
+	/*
+	 * "For DDIC and DDID, program DDI_CLK_SEL to map the MG clock to the port.
+	 *  MG does not exist, but the programming is required to ungate DDIC and DDID."
+	 */
+	intel_de_write(i915, DDI_CLK_SEL(port), DDI_CLK_SEL_MG);
+
+	icl_ddi_combo_enable_clock(encoder, crtc_state);
+}
+
+static void jsl_ddi_tc_disable_clock(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum port port = encoder->port;
+
+	icl_ddi_combo_disable_clock(encoder);
+
+	intel_de_write(i915, DDI_CLK_SEL(port), DDI_CLK_SEL_NONE);
+}
+
+static bool jsl_ddi_tc_is_clock_enabled(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum port port = encoder->port;
+	u32 tmp;
+
+	tmp = intel_de_read(i915, DDI_CLK_SEL(port));
+
+	if ((tmp & DDI_CLK_SEL_MASK) == DDI_CLK_SEL_NONE)
+		return false;
+
+	return icl_ddi_combo_is_clock_enabled(encoder);
+}
+
+static void icl_ddi_tc_enable_clock(struct intel_encoder *encoder,
+				    const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	const struct intel_shared_dpll *pll = crtc_state->shared_dpll;
+	enum tc_port tc_port = intel_port_to_tc(i915, encoder->port);
+	enum port port = encoder->port;
+
+	if (drm_WARN_ON(&i915->drm, !pll))
+		return;
+
+	intel_de_write(i915, DDI_CLK_SEL(port),
+		       icl_pll_to_ddi_clk_sel(encoder, crtc_state));
+
+	mutex_lock(&i915->display.dpll.lock);
+
+	intel_de_rmw(i915, ICL_DPCLKA_CFGCR0,
+		     ICL_DPCLKA_CFGCR0_TC_CLK_OFF(tc_port), 0);
+
+	mutex_unlock(&i915->display.dpll.lock);
+}
+
+static void icl_ddi_tc_disable_clock(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum tc_port tc_port = intel_port_to_tc(i915, encoder->port);
+	enum port port = encoder->port;
+
+	mutex_lock(&i915->display.dpll.lock);
+
+	intel_de_rmw(i915, ICL_DPCLKA_CFGCR0,
+		     0, ICL_DPCLKA_CFGCR0_TC_CLK_OFF(tc_port));
+
+	mutex_unlock(&i915->display.dpll.lock);
+
+	intel_de_write(i915, DDI_CLK_SEL(port), DDI_CLK_SEL_NONE);
+}
+
+static bool icl_ddi_tc_is_clock_enabled(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum tc_port tc_port = intel_port_to_tc(i915, encoder->port);
+	enum port port = encoder->port;
+	u32 tmp;
+
+	tmp = intel_de_read(i915, DDI_CLK_SEL(port));
+
+	if ((tmp & DDI_CLK_SEL_MASK) == DDI_CLK_SEL_NONE)
+		return false;
+
+	tmp = intel_de_read(i915, ICL_DPCLKA_CFGCR0);
+
+	return !(tmp & ICL_DPCLKA_CFGCR0_TC_CLK_OFF(tc_port));
+}
+
+static struct intel_shared_dpll *icl_ddi_tc_get_pll(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum tc_port tc_port = intel_port_to_tc(i915, encoder->port);
+	enum port port = encoder->port;
+	enum intel_dpll_id id;
+	u32 tmp;
+
+	tmp = intel_de_read(i915, DDI_CLK_SEL(port));
+
+	switch (tmp & DDI_CLK_SEL_MASK) {
+	case DDI_CLK_SEL_TBT_162:
+	case DDI_CLK_SEL_TBT_270:
+	case DDI_CLK_SEL_TBT_540:
+	case DDI_CLK_SEL_TBT_810:
+		id = DPLL_ID_ICL_TBTPLL;
+		break;
+	case DDI_CLK_SEL_MG:
+		id = icl_tc_port_to_pll_id(tc_port);
+		break;
+	default:
+		MISSING_CASE(tmp);
+		fallthrough;
+	case DDI_CLK_SEL_NONE:
+		return NULL;
+	}
+
+	return intel_get_shared_dpll_by_id(i915, id);
+}
+
+static struct intel_shared_dpll *bxt_ddi_get_pll(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum intel_dpll_id id;
+
+	switch (encoder->port) {
+	case PORT_A:
+		id = DPLL_ID_SKL_DPLL0;
+		break;
+	case PORT_B:
+		id = DPLL_ID_SKL_DPLL1;
+		break;
+	case PORT_C:
+		id = DPLL_ID_SKL_DPLL2;
+		break;
+	default:
+		MISSING_CASE(encoder->port);
+		return NULL;
+	}
+
+	return intel_get_shared_dpll_by_id(i915, id);
+}
+
+static void skl_ddi_enable_clock(struct intel_encoder *encoder,
+				 const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	const struct intel_shared_dpll *pll = crtc_state->shared_dpll;
+	enum port port = encoder->port;
+
+	if (drm_WARN_ON(&i915->drm, !pll))
+		return;
+
+	mutex_lock(&i915->display.dpll.lock);
+
+	intel_de_rmw(i915, DPLL_CTRL2,
+		     DPLL_CTRL2_DDI_CLK_OFF(port) |
+		     DPLL_CTRL2_DDI_CLK_SEL_MASK(port),
+		     DPLL_CTRL2_DDI_CLK_SEL(pll->info->id, port) |
+		     DPLL_CTRL2_DDI_SEL_OVERRIDE(port));
+
+	mutex_unlock(&i915->display.dpll.lock);
+}
+
+static void skl_ddi_disable_clock(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum port port = encoder->port;
+
+	mutex_lock(&i915->display.dpll.lock);
+
+	intel_de_rmw(i915, DPLL_CTRL2,
+		     0, DPLL_CTRL2_DDI_CLK_OFF(port));
+
+	mutex_unlock(&i915->display.dpll.lock);
+}
+
+static bool skl_ddi_is_clock_enabled(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum port port = encoder->port;
+
+	/*
+	 * FIXME Not sure if the override affects both
+	 * the PLL selection and the CLK_OFF bit.
+	 */
+	return !(intel_de_read(i915, DPLL_CTRL2) & DPLL_CTRL2_DDI_CLK_OFF(port));
+}
+
+static struct intel_shared_dpll *skl_ddi_get_pll(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum port port = encoder->port;
+	enum intel_dpll_id id;
+	u32 tmp;
+
+	tmp = intel_de_read(i915, DPLL_CTRL2);
+
+	/*
+	 * FIXME Not sure if the override affects both
+	 * the PLL selection and the CLK_OFF bit.
+	 */
+	if ((tmp & DPLL_CTRL2_DDI_SEL_OVERRIDE(port)) == 0)
+		return NULL;
+
+	id = (tmp & DPLL_CTRL2_DDI_CLK_SEL_MASK(port)) >>
+		DPLL_CTRL2_DDI_CLK_SEL_SHIFT(port);
+
+	return intel_get_shared_dpll_by_id(i915, id);
+}
+
+void hsw_ddi_enable_clock(struct intel_encoder *encoder,
+			  const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	const struct intel_shared_dpll *pll = crtc_state->shared_dpll;
+	enum port port = encoder->port;
+
+	if (drm_WARN_ON(&i915->drm, !pll))
+		return;
+
+	intel_de_write(i915, PORT_CLK_SEL(port), hsw_pll_to_ddi_pll_sel(pll));
+}
+
+void hsw_ddi_disable_clock(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum port port = encoder->port;
+
+	intel_de_write(i915, PORT_CLK_SEL(port), PORT_CLK_SEL_NONE);
+}
+
+bool hsw_ddi_is_clock_enabled(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum port port = encoder->port;
+
+	return intel_de_read(i915, PORT_CLK_SEL(port)) != PORT_CLK_SEL_NONE;
+}
+
+static struct intel_shared_dpll *hsw_ddi_get_pll(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum port port = encoder->port;
+	enum intel_dpll_id id;
+	u32 tmp;
+
+	tmp = intel_de_read(i915, PORT_CLK_SEL(port));
+
+	switch (tmp & PORT_CLK_SEL_MASK) {
+	case PORT_CLK_SEL_WRPLL1:
+		id = DPLL_ID_WRPLL1;
+		break;
+	case PORT_CLK_SEL_WRPLL2:
+		id = DPLL_ID_WRPLL2;
+		break;
+	case PORT_CLK_SEL_SPLL:
+		id = DPLL_ID_SPLL;
+		break;
+	case PORT_CLK_SEL_LCPLL_810:
+		id = DPLL_ID_LCPLL_810;
+		break;
+	case PORT_CLK_SEL_LCPLL_1350:
+		id = DPLL_ID_LCPLL_1350;
+		break;
+	case PORT_CLK_SEL_LCPLL_2700:
+		id = DPLL_ID_LCPLL_2700;
+		break;
+	default:
+		MISSING_CASE(tmp);
+		fallthrough;
+	case PORT_CLK_SEL_NONE:
+		return NULL;
+	}
+
+	return intel_get_shared_dpll_by_id(i915, id);
+}
+
+void intel_ddi_enable_clock(struct intel_encoder *encoder,
+			    const struct intel_crtc_state *crtc_state)
+{
+	if (encoder->enable_clock)
+		encoder->enable_clock(encoder, crtc_state);
+}
+
+void intel_ddi_disable_clock(struct intel_encoder *encoder)
+{
+	if (encoder->disable_clock)
+		encoder->disable_clock(encoder);
+}
+
+void intel_ddi_sanitize_encoder_pll_mapping(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	u32 port_mask;
+	bool ddi_clk_needed;
+
+	/*
+	 * In case of DP MST, we sanitize the primary encoder only, not the
+	 * virtual ones.
+	 */
+	if (encoder->type == INTEL_OUTPUT_DP_MST)
+		return;
+
+	if (!encoder->base.crtc && intel_encoder_is_dp(encoder)) {
+		u8 pipe_mask;
+		bool is_mst;
+
+		intel_ddi_get_encoder_pipes(encoder, &pipe_mask, &is_mst);
+		/*
+		 * In the unlikely case that BIOS enables DP in MST mode, just
+		 * warn since our MST HW readout is incomplete.
+		 */
+		if (drm_WARN_ON(&i915->drm, is_mst))
+			return;
+	}
+
+	port_mask = BIT(encoder->port);
+	ddi_clk_needed = encoder->base.crtc;
+
+	if (encoder->type == INTEL_OUTPUT_DSI) {
+		struct intel_encoder *other_encoder;
+
+		port_mask = intel_dsi_encoder_ports(encoder);
+		/*
+		 * Sanity check that we haven't incorrectly registered another
+		 * encoder using any of the ports of this DSI encoder.
+		 */
+		for_each_intel_encoder(&i915->drm, other_encoder) {
+			if (other_encoder == encoder)
+				continue;
+
+			if (drm_WARN_ON(&i915->drm,
+					port_mask & BIT(other_encoder->port)))
+				return;
+		}
+		/*
+		 * For DSI we keep the ddi clocks gated
+		 * except during enable/disable sequence.
+		 */
+		ddi_clk_needed = false;
+	}
+
+	if (ddi_clk_needed || !encoder->is_clock_enabled ||
+	    !encoder->is_clock_enabled(encoder))
+		return;
+
+	drm_notice(&i915->drm,
+		   "[ENCODER:%d:%s] is disabled/in DSI mode with an ungated DDI clock, gate it\n",
+		   encoder->base.base.id, encoder->base.name);
+
+	encoder->disable_clock(encoder);
+}
+
+static void
+icl_program_mg_dp_mode(struct intel_digital_port *dig_port,
+		       const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
+	enum tc_port tc_port = intel_port_to_tc(dev_priv, dig_port->base.port);
+	enum phy phy = intel_port_to_phy(dev_priv, dig_port->base.port);
+	u32 ln0, ln1, pin_assignment;
+	u8 width;
+
+	if (!intel_phy_is_tc(dev_priv, phy) ||
+	    intel_tc_port_in_tbt_alt_mode(dig_port))
+		return;
+
+	if (DISPLAY_VER(dev_priv) >= 12) {
+		ln0 = intel_dkl_phy_read(dev_priv, DKL_DP_MODE(tc_port), 0);
+		ln1 = intel_dkl_phy_read(dev_priv, DKL_DP_MODE(tc_port), 1);
+	} else {
+		ln0 = intel_de_read(dev_priv, MG_DP_MODE(0, tc_port));
+		ln1 = intel_de_read(dev_priv, MG_DP_MODE(1, tc_port));
+	}
+
+	ln0 &= ~(MG_DP_MODE_CFG_DP_X1_MODE | MG_DP_MODE_CFG_DP_X2_MODE);
+	ln1 &= ~(MG_DP_MODE_CFG_DP_X1_MODE | MG_DP_MODE_CFG_DP_X2_MODE);
+
+	/* DPPATC */
+	pin_assignment = intel_tc_port_get_pin_assignment_mask(dig_port);
+	width = crtc_state->lane_count;
+
+	switch (pin_assignment) {
+	case 0x0:
+		drm_WARN_ON(&dev_priv->drm,
+			    !intel_tc_port_in_legacy_mode(dig_port));
+		if (width == 1) {
+			ln1 |= MG_DP_MODE_CFG_DP_X1_MODE;
+		} else {
+			ln0 |= MG_DP_MODE_CFG_DP_X2_MODE;
+			ln1 |= MG_DP_MODE_CFG_DP_X2_MODE;
+		}
+		break;
+	case 0x1:
+		if (width == 4) {
+			ln0 |= MG_DP_MODE_CFG_DP_X2_MODE;
+			ln1 |= MG_DP_MODE_CFG_DP_X2_MODE;
+		}
+		break;
+	case 0x2:
+		if (width == 2) {
+			ln0 |= MG_DP_MODE_CFG_DP_X2_MODE;
+			ln1 |= MG_DP_MODE_CFG_DP_X2_MODE;
+		}
+		break;
+	case 0x3:
+	case 0x5:
+		if (width == 1) {
+			ln0 |= MG_DP_MODE_CFG_DP_X1_MODE;
+			ln1 |= MG_DP_MODE_CFG_DP_X1_MODE;
+		} else {
+			ln0 |= MG_DP_MODE_CFG_DP_X2_MODE;
+			ln1 |= MG_DP_MODE_CFG_DP_X2_MODE;
+		}
+		break;
+	case 0x4:
+	case 0x6:
+		if (width == 1) {
+			ln0 |= MG_DP_MODE_CFG_DP_X1_MODE;
+			ln1 |= MG_DP_MODE_CFG_DP_X1_MODE;
+		} else {
+			ln0 |= MG_DP_MODE_CFG_DP_X2_MODE;
+			ln1 |= MG_DP_MODE_CFG_DP_X2_MODE;
+		}
+		break;
+	default:
+		MISSING_CASE(pin_assignment);
+	}
+
+	if (DISPLAY_VER(dev_priv) >= 12) {
+		intel_dkl_phy_write(dev_priv, DKL_DP_MODE(tc_port), 0, ln0);
+		intel_dkl_phy_write(dev_priv, DKL_DP_MODE(tc_port), 1, ln1);
+	} else {
+		intel_de_write(dev_priv, MG_DP_MODE(0, tc_port), ln0);
+		intel_de_write(dev_priv, MG_DP_MODE(1, tc_port), ln1);
+	}
+}
+
+static enum transcoder
+tgl_dp_tp_transcoder(const struct intel_crtc_state *crtc_state)
+{
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST))
+		return crtc_state->mst_master_transcoder;
+	else
+		return crtc_state->cpu_transcoder;
+}
+
+i915_reg_t dp_tp_ctl_reg(struct intel_encoder *encoder,
+			 const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+
+	if (DISPLAY_VER(dev_priv) >= 12)
+		return TGL_DP_TP_CTL(tgl_dp_tp_transcoder(crtc_state));
+	else
+		return DP_TP_CTL(encoder->port);
+}
+
+i915_reg_t dp_tp_status_reg(struct intel_encoder *encoder,
+			    const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+
+	if (DISPLAY_VER(dev_priv) >= 12)
+		return TGL_DP_TP_STATUS(tgl_dp_tp_transcoder(crtc_state));
+	else
+		return DP_TP_STATUS(encoder->port);
+}
+
+static void intel_dp_sink_set_msa_timing_par_ignore_state(struct intel_dp *intel_dp,
+							  const struct intel_crtc_state *crtc_state,
+							  bool enable)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+
+	if (!crtc_state->vrr.enable)
+		return;
+
+	if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_DOWNSPREAD_CTRL,
+			       enable ? DP_MSA_TIMING_PAR_IGNORE_EN : 0) <= 0)
+		drm_dbg_kms(&i915->drm,
+			    "Failed to %s MSA_TIMING_PAR_IGNORE in the sink\n",
+			    str_enable_disable(enable));
+}
+
+static void intel_dp_sink_set_fec_ready(struct intel_dp *intel_dp,
+					const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+
+	if (!crtc_state->fec_enable)
+		return;
+
+	if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_FEC_CONFIGURATION, DP_FEC_READY) <= 0)
+		drm_dbg_kms(&i915->drm,
+			    "Failed to set FEC_READY in the sink\n");
+}
+
+static void intel_ddi_enable_fec(struct intel_encoder *encoder,
+				 const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dp *intel_dp;
+	u32 val;
+
+	if (!crtc_state->fec_enable)
+		return;
+
+	intel_dp = enc_to_intel_dp(encoder);
+	val = intel_de_read(dev_priv, dp_tp_ctl_reg(encoder, crtc_state));
+	val |= DP_TP_CTL_FEC_ENABLE;
+	intel_de_write(dev_priv, dp_tp_ctl_reg(encoder, crtc_state), val);
+}
+
+static void intel_ddi_disable_fec_state(struct intel_encoder *encoder,
+					const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dp *intel_dp;
+	u32 val;
+
+	if (!crtc_state->fec_enable)
+		return;
+
+	intel_dp = enc_to_intel_dp(encoder);
+	val = intel_de_read(dev_priv, dp_tp_ctl_reg(encoder, crtc_state));
+	val &= ~DP_TP_CTL_FEC_ENABLE;
+	intel_de_write(dev_priv, dp_tp_ctl_reg(encoder, crtc_state), val);
+	intel_de_posting_read(dev_priv, dp_tp_ctl_reg(encoder, crtc_state));
+}
+
+static void intel_ddi_power_up_lanes(struct intel_encoder *encoder,
+				     const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	enum phy phy = intel_port_to_phy(i915, encoder->port);
+
+	if (intel_phy_is_combo(i915, phy)) {
+		bool lane_reversal =
+			dig_port->saved_port_bits & DDI_BUF_PORT_REVERSAL;
+
+		intel_combo_phy_power_up_lanes(i915, phy, false,
+					       crtc_state->lane_count,
+					       lane_reversal);
+	}
+}
+
+/* Splitter enable for eDP MSO is limited to certain pipes. */
+static u8 intel_ddi_splitter_pipe_mask(struct drm_i915_private *i915)
+{
+	if (IS_ALDERLAKE_P(i915))
+		return BIT(PIPE_A) | BIT(PIPE_B);
+	else
+		return BIT(PIPE_A);
+}
+
+static void intel_ddi_mso_get_config(struct intel_encoder *encoder,
+				     struct intel_crtc_state *pipe_config)
+{
+	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+	u32 dss1;
+
+	if (!HAS_MSO(i915))
+		return;
+
+	dss1 = intel_de_read(i915, ICL_PIPE_DSS_CTL1(pipe));
+
+	pipe_config->splitter.enable = dss1 & SPLITTER_ENABLE;
+	if (!pipe_config->splitter.enable)
+		return;
+
+	if (drm_WARN_ON(&i915->drm, !(intel_ddi_splitter_pipe_mask(i915) & BIT(pipe)))) {
+		pipe_config->splitter.enable = false;
+		return;
+	}
+
+	switch (dss1 & SPLITTER_CONFIGURATION_MASK) {
+	default:
+		drm_WARN(&i915->drm, true,
+			 "Invalid splitter configuration, dss1=0x%08x\n", dss1);
+		fallthrough;
+	case SPLITTER_CONFIGURATION_2_SEGMENT:
+		pipe_config->splitter.link_count = 2;
+		break;
+	case SPLITTER_CONFIGURATION_4_SEGMENT:
+		pipe_config->splitter.link_count = 4;
+		break;
+	}
+
+	pipe_config->splitter.pixel_overlap = REG_FIELD_GET(OVERLAP_PIXELS_MASK, dss1);
+}
+
+static void intel_ddi_mso_configure(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+	u32 dss1 = 0;
+
+	if (!HAS_MSO(i915))
+		return;
+
+	if (crtc_state->splitter.enable) {
+		dss1 |= SPLITTER_ENABLE;
+		dss1 |= OVERLAP_PIXELS(crtc_state->splitter.pixel_overlap);
+		if (crtc_state->splitter.link_count == 2)
+			dss1 |= SPLITTER_CONFIGURATION_2_SEGMENT;
+		else
+			dss1 |= SPLITTER_CONFIGURATION_4_SEGMENT;
+	}
+
+	intel_de_rmw(i915, ICL_PIPE_DSS_CTL1(pipe),
+		     SPLITTER_ENABLE | SPLITTER_CONFIGURATION_MASK |
+		     OVERLAP_PIXELS_MASK, dss1);
+}
+
+static void tgl_ddi_pre_enable_dp(struct intel_atomic_state *state,
+				  struct intel_encoder *encoder,
+				  const struct intel_crtc_state *crtc_state,
+				  const struct drm_connector_state *conn_state)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	bool is_mst = intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST);
+
+	intel_dp_set_link_params(intel_dp,
+				 crtc_state->port_clock,
+				 crtc_state->lane_count);
+
+	/*
+	 * We only configure what the register value will be here.  Actual
+	 * enabling happens during link training farther down.
+	 */
+	intel_ddi_init_dp_buf_reg(encoder, crtc_state);
+
+	/*
+	 * 1. Enable Power Wells
+	 *
+	 * This was handled at the beginning of intel_atomic_commit_tail(),
+	 * before we called down into this function.
+	 */
+
+	/* 2. Enable Panel Power if PPS is required */
+	intel_pps_on(intel_dp);
+
+	/*
+	 * 3. For non-TBT Type-C ports, set FIA lane count
+	 * (DFLEXDPSP.DPX4TXLATC)
+	 *
+	 * This was done before tgl_ddi_pre_enable_dp by
+	 * hsw_crtc_enable()->intel_encoders_pre_pll_enable().
+	 */
+
+	/*
+	 * 4. Enable the port PLL.
+	 *
+	 * The PLL enabling itself was already done before this function by
+	 * hsw_crtc_enable()->intel_enable_shared_dpll().  We need only
+	 * configure the PLL to port mapping here.
+	 */
+	intel_ddi_enable_clock(encoder, crtc_state);
+
+	/* 5. If IO power is controlled through PWR_WELL_CTL, Enable IO Power */
+	if (!intel_tc_port_in_tbt_alt_mode(dig_port)) {
+		drm_WARN_ON(&dev_priv->drm, dig_port->ddi_io_wakeref);
+		dig_port->ddi_io_wakeref = intel_display_power_get(dev_priv,
+								   dig_port->ddi_io_power_domain);
+	}
+
+	/* 6. Program DP_MODE */
+	icl_program_mg_dp_mode(dig_port, crtc_state);
+
+	/*
+	 * 7. The rest of the below are substeps under the bspec's "Enable and
+	 * Train Display Port" step.  Note that steps that are specific to
+	 * MST will be handled by intel_mst_pre_enable_dp() before/after it
+	 * calls into this function.  Also intel_mst_pre_enable_dp() only calls
+	 * us when active_mst_links==0, so any steps designated for "single
+	 * stream or multi-stream master transcoder" can just be performed
+	 * unconditionally here.
+	 */
+
+	/*
+	 * 7.a Configure Transcoder Clock Select to direct the Port clock to the
+	 * Transcoder.
+	 */
+	intel_ddi_enable_pipe_clock(encoder, crtc_state);
+
+	if (HAS_DP20(dev_priv))
+		intel_ddi_config_transcoder_dp2(encoder, crtc_state);
+
+	/*
+	 * 7.b Configure TRANS_DDI_FUNC_CTL DDI Select, DDI Mode Select & MST
+	 * Transport Select
+	 */
+	intel_ddi_config_transcoder_func(encoder, crtc_state);
+
+	/*
+	 * 7.c Configure & enable DP_TP_CTL with link training pattern 1
+	 * selected
+	 *
+	 * This will be handled by the intel_dp_start_link_train() farther
+	 * down this function.
+	 */
+
+	/* 7.e Configure voltage swing and related IO settings */
+	encoder->set_signal_levels(encoder, crtc_state);
+
+	/*
+	 * 7.f Combo PHY: Configure PORT_CL_DW10 Static Power Down to power up
+	 * the used lanes of the DDI.
+	 */
+	intel_ddi_power_up_lanes(encoder, crtc_state);
+
+	/*
+	 * 7.g Program CoG/MSO configuration bits in DSS_CTL1 if selected.
+	 */
+	intel_ddi_mso_configure(crtc_state);
+
+	if (!is_mst)
+		intel_dp_set_power(intel_dp, DP_SET_POWER_D0);
+
+	intel_dp_configure_protocol_converter(intel_dp, crtc_state);
+	intel_dp_sink_set_decompression_state(intel_dp, crtc_state, true);
+	/*
+	 * DDI FEC: "anticipates enabling FEC encoding sets the FEC_READY bit
+	 * in the FEC_CONFIGURATION register to 1 before initiating link
+	 * training
+	 */
+	intel_dp_sink_set_fec_ready(intel_dp, crtc_state);
+
+	intel_dp_check_frl_training(intel_dp);
+	intel_dp_pcon_dsc_configure(intel_dp, crtc_state);
+
+	/*
+	 * 7.i Follow DisplayPort specification training sequence (see notes for
+	 *     failure handling)
+	 * 7.j If DisplayPort multi-stream - Set DP_TP_CTL link training to Idle
+	 *     Pattern, wait for 5 idle patterns (DP_TP_STATUS Min_Idles_Sent)
+	 *     (timeout after 800 us)
+	 */
+	intel_dp_start_link_train(intel_dp, crtc_state);
+
+	/* 7.k Set DP_TP_CTL link training to Normal */
+	if (!is_trans_port_sync_mode(crtc_state))
+		intel_dp_stop_link_train(intel_dp, crtc_state);
+
+	/* 7.l Configure and enable FEC if needed */
+	intel_ddi_enable_fec(encoder, crtc_state);
+
+	intel_dsc_dp_pps_write(encoder, crtc_state);
+}
+
+static void hsw_ddi_pre_enable_dp(struct intel_atomic_state *state,
+				  struct intel_encoder *encoder,
+				  const struct intel_crtc_state *crtc_state,
+				  const struct drm_connector_state *conn_state)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	enum port port = encoder->port;
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	bool is_mst = intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST);
+
+	if (DISPLAY_VER(dev_priv) < 11)
+		drm_WARN_ON(&dev_priv->drm,
+			    is_mst && (port == PORT_A || port == PORT_E));
+	else
+		drm_WARN_ON(&dev_priv->drm, is_mst && port == PORT_A);
+
+	intel_dp_set_link_params(intel_dp,
+				 crtc_state->port_clock,
+				 crtc_state->lane_count);
+
+	/*
+	 * We only configure what the register value will be here.  Actual
+	 * enabling happens during link training farther down.
+	 */
+	intel_ddi_init_dp_buf_reg(encoder, crtc_state);
+
+	intel_pps_on(intel_dp);
+
+	intel_ddi_enable_clock(encoder, crtc_state);
+
+	if (!intel_tc_port_in_tbt_alt_mode(dig_port)) {
+		drm_WARN_ON(&dev_priv->drm, dig_port->ddi_io_wakeref);
+		dig_port->ddi_io_wakeref = intel_display_power_get(dev_priv,
+								   dig_port->ddi_io_power_domain);
+	}
+
+	icl_program_mg_dp_mode(dig_port, crtc_state);
+
+	if (has_buf_trans_select(dev_priv))
+		hsw_prepare_dp_ddi_buffers(encoder, crtc_state);
+
+	encoder->set_signal_levels(encoder, crtc_state);
+
+	intel_ddi_power_up_lanes(encoder, crtc_state);
+
+	if (!is_mst)
+		intel_dp_set_power(intel_dp, DP_SET_POWER_D0);
+	intel_dp_configure_protocol_converter(intel_dp, crtc_state);
+	intel_dp_sink_set_decompression_state(intel_dp, crtc_state,
+					      true);
+	intel_dp_sink_set_fec_ready(intel_dp, crtc_state);
+	intel_dp_start_link_train(intel_dp, crtc_state);
+	if ((port != PORT_A || DISPLAY_VER(dev_priv) >= 9) &&
+	    !is_trans_port_sync_mode(crtc_state))
+		intel_dp_stop_link_train(intel_dp, crtc_state);
+
+	intel_ddi_enable_fec(encoder, crtc_state);
+
+	if (!is_mst)
+		intel_ddi_enable_pipe_clock(encoder, crtc_state);
+
+	intel_dsc_dp_pps_write(encoder, crtc_state);
+}
+
+static void intel_ddi_pre_enable_dp(struct intel_atomic_state *state,
+				    struct intel_encoder *encoder,
+				    const struct intel_crtc_state *crtc_state,
+				    const struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+
+	if (DISPLAY_VER(dev_priv) >= 12)
+		tgl_ddi_pre_enable_dp(state, encoder, crtc_state, conn_state);
+	else
+		hsw_ddi_pre_enable_dp(state, encoder, crtc_state, conn_state);
+
+	/* MST will call a setting of MSA after an allocating of Virtual Channel
+	 * from MST encoder pre_enable callback.
+	 */
+	if (!intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST))
+		intel_ddi_set_dp_msa(crtc_state, conn_state);
+}
+
+static void intel_ddi_pre_enable_hdmi(struct intel_atomic_state *state,
+				      struct intel_encoder *encoder,
+				      const struct intel_crtc_state *crtc_state,
+				      const struct drm_connector_state *conn_state)
+{
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	struct intel_hdmi *intel_hdmi = &dig_port->hdmi;
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+
+	intel_dp_dual_mode_set_tmds_output(intel_hdmi, true);
+	intel_ddi_enable_clock(encoder, crtc_state);
+
+	drm_WARN_ON(&dev_priv->drm, dig_port->ddi_io_wakeref);
+	dig_port->ddi_io_wakeref = intel_display_power_get(dev_priv,
+							   dig_port->ddi_io_power_domain);
+
+	icl_program_mg_dp_mode(dig_port, crtc_state);
+
+	intel_ddi_enable_pipe_clock(encoder, crtc_state);
+
+	dig_port->set_infoframes(encoder,
+				 crtc_state->has_infoframe,
+				 crtc_state, conn_state);
+}
+
+static void intel_ddi_pre_enable(struct intel_atomic_state *state,
+				 struct intel_encoder *encoder,
+				 const struct intel_crtc_state *crtc_state,
+				 const struct drm_connector_state *conn_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+
+	/*
+	 * When called from DP MST code:
+	 * - conn_state will be NULL
+	 * - encoder will be the main encoder (ie. mst->primary)
+	 * - the main connector associated with this port
+	 *   won't be active or linked to a crtc
+	 * - crtc_state will be the state of the first stream to
+	 *   be activated on this port, and it may not be the same
+	 *   stream that will be deactivated last, but each stream
+	 *   should have a state that is identical when it comes to
+	 *   the DP link parameteres
+	 */
+
+	drm_WARN_ON(&dev_priv->drm, crtc_state->has_pch_encoder);
+
+	intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
+
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) {
+		intel_ddi_pre_enable_hdmi(state, encoder, crtc_state,
+					  conn_state);
+	} else {
+		struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+
+		intel_ddi_pre_enable_dp(state, encoder, crtc_state,
+					conn_state);
+
+		/* FIXME precompute everything properly */
+		/* FIXME how do we turn infoframes off again? */
+		if (dig_port->lspcon.active && dig_port->dp.has_hdmi_sink)
+			dig_port->set_infoframes(encoder,
+						 crtc_state->has_infoframe,
+						 crtc_state, conn_state);
+	}
+}
+
+static void intel_disable_ddi_buf(struct intel_encoder *encoder,
+				  const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	enum port port = encoder->port;
+	bool wait = false;
+	u32 val;
+
+	val = intel_de_read(dev_priv, DDI_BUF_CTL(port));
+	if (val & DDI_BUF_CTL_ENABLE) {
+		val &= ~DDI_BUF_CTL_ENABLE;
+		intel_de_write(dev_priv, DDI_BUF_CTL(port), val);
+		wait = true;
+	}
+
+	if (intel_crtc_has_dp_encoder(crtc_state)) {
+		val = intel_de_read(dev_priv, dp_tp_ctl_reg(encoder, crtc_state));
+		val &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK);
+		val |= DP_TP_CTL_LINK_TRAIN_PAT1;
+		intel_de_write(dev_priv, dp_tp_ctl_reg(encoder, crtc_state), val);
+	}
+
+	/* Disable FEC in DP Sink */
+	intel_ddi_disable_fec_state(encoder, crtc_state);
+
+	if (wait)
+		intel_wait_ddi_buf_idle(dev_priv, port);
+}
+
+static void intel_ddi_post_disable_dp(struct intel_atomic_state *state,
+				      struct intel_encoder *encoder,
+				      const struct intel_crtc_state *old_crtc_state,
+				      const struct drm_connector_state *old_conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	struct intel_dp *intel_dp = &dig_port->dp;
+	bool is_mst = intel_crtc_has_type(old_crtc_state,
+					  INTEL_OUTPUT_DP_MST);
+
+	if (!is_mst)
+		intel_dp_set_infoframes(encoder, false,
+					old_crtc_state, old_conn_state);
+
+	/*
+	 * Power down sink before disabling the port, otherwise we end
+	 * up getting interrupts from the sink on detecting link loss.
+	 */
+	intel_dp_set_power(intel_dp, DP_SET_POWER_D3);
+
+	if (DISPLAY_VER(dev_priv) >= 12) {
+		if (is_mst) {
+			enum transcoder cpu_transcoder = old_crtc_state->cpu_transcoder;
+			u32 val;
+
+			val = intel_de_read(dev_priv,
+					    TRANS_DDI_FUNC_CTL(cpu_transcoder));
+			val &= ~(TGL_TRANS_DDI_PORT_MASK |
+				 TRANS_DDI_MODE_SELECT_MASK);
+			intel_de_write(dev_priv,
+				       TRANS_DDI_FUNC_CTL(cpu_transcoder),
+				       val);
+		}
+	} else {
+		if (!is_mst)
+			intel_ddi_disable_pipe_clock(old_crtc_state);
+	}
+
+	intel_disable_ddi_buf(encoder, old_crtc_state);
+
+	/*
+	 * From TGL spec: "If single stream or multi-stream master transcoder:
+	 * Configure Transcoder Clock select to direct no clock to the
+	 * transcoder"
+	 */
+	if (DISPLAY_VER(dev_priv) >= 12)
+		intel_ddi_disable_pipe_clock(old_crtc_state);
+
+	intel_pps_vdd_on(intel_dp);
+	intel_pps_off(intel_dp);
+
+	if (!intel_tc_port_in_tbt_alt_mode(dig_port))
+		intel_display_power_put(dev_priv,
+					dig_port->ddi_io_power_domain,
+					fetch_and_zero(&dig_port->ddi_io_wakeref));
+
+	intel_ddi_disable_clock(encoder);
+}
+
+static void intel_ddi_post_disable_hdmi(struct intel_atomic_state *state,
+					struct intel_encoder *encoder,
+					const struct intel_crtc_state *old_crtc_state,
+					const struct drm_connector_state *old_conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	struct intel_hdmi *intel_hdmi = &dig_port->hdmi;
+
+	dig_port->set_infoframes(encoder, false,
+				 old_crtc_state, old_conn_state);
+
+	if (DISPLAY_VER(dev_priv) < 12)
+		intel_ddi_disable_pipe_clock(old_crtc_state);
+
+	intel_disable_ddi_buf(encoder, old_crtc_state);
+
+	if (DISPLAY_VER(dev_priv) >= 12)
+		intel_ddi_disable_pipe_clock(old_crtc_state);
+
+	intel_display_power_put(dev_priv,
+				dig_port->ddi_io_power_domain,
+				fetch_and_zero(&dig_port->ddi_io_wakeref));
+
+	intel_ddi_disable_clock(encoder);
+
+	intel_dp_dual_mode_set_tmds_output(intel_hdmi, false);
+}
+
+static void intel_ddi_post_disable(struct intel_atomic_state *state,
+				   struct intel_encoder *encoder,
+				   const struct intel_crtc_state *old_crtc_state,
+				   const struct drm_connector_state *old_conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	enum phy phy = intel_port_to_phy(dev_priv, encoder->port);
+	bool is_tc_port = intel_phy_is_tc(dev_priv, phy);
+	struct intel_crtc *slave_crtc;
+
+	if (!intel_crtc_has_type(old_crtc_state, INTEL_OUTPUT_DP_MST)) {
+		intel_crtc_vblank_off(old_crtc_state);
+
+		intel_disable_transcoder(old_crtc_state);
+
+		intel_vrr_disable(old_crtc_state);
+
+		intel_ddi_disable_transcoder_func(old_crtc_state);
+
+		intel_dsc_disable(old_crtc_state);
+
+		if (DISPLAY_VER(dev_priv) >= 9)
+			skl_scaler_disable(old_crtc_state);
+		else
+			ilk_pfit_disable(old_crtc_state);
+	}
+
+	for_each_intel_crtc_in_pipe_mask(&dev_priv->drm, slave_crtc,
+					 intel_crtc_bigjoiner_slave_pipes(old_crtc_state)) {
+		const struct intel_crtc_state *old_slave_crtc_state =
+			intel_atomic_get_old_crtc_state(state, slave_crtc);
+
+		intel_crtc_vblank_off(old_slave_crtc_state);
+
+		intel_dsc_disable(old_slave_crtc_state);
+		skl_scaler_disable(old_slave_crtc_state);
+	}
+
+	/*
+	 * When called from DP MST code:
+	 * - old_conn_state will be NULL
+	 * - encoder will be the main encoder (ie. mst->primary)
+	 * - the main connector associated with this port
+	 *   won't be active or linked to a crtc
+	 * - old_crtc_state will be the state of the last stream to
+	 *   be deactivated on this port, and it may not be the same
+	 *   stream that was activated last, but each stream
+	 *   should have a state that is identical when it comes to
+	 *   the DP link parameteres
+	 */
+
+	if (intel_crtc_has_type(old_crtc_state, INTEL_OUTPUT_HDMI))
+		intel_ddi_post_disable_hdmi(state, encoder, old_crtc_state,
+					    old_conn_state);
+	else
+		intel_ddi_post_disable_dp(state, encoder, old_crtc_state,
+					  old_conn_state);
+
+	if (intel_crtc_has_dp_encoder(old_crtc_state) || is_tc_port)
+		intel_display_power_put(dev_priv,
+					intel_ddi_main_link_aux_domain(dig_port),
+					fetch_and_zero(&dig_port->aux_wakeref));
+
+	if (is_tc_port)
+		intel_tc_port_put_link(dig_port);
+}
+
+static void trans_port_sync_stop_link_train(struct intel_atomic_state *state,
+					    struct intel_encoder *encoder,
+					    const struct intel_crtc_state *crtc_state)
+{
+	const struct drm_connector_state *conn_state;
+	struct drm_connector *conn;
+	int i;
+
+	if (!crtc_state->sync_mode_slaves_mask)
+		return;
+
+	for_each_new_connector_in_state(&state->base, conn, conn_state, i) {
+		struct intel_encoder *slave_encoder =
+			to_intel_encoder(conn_state->best_encoder);
+		struct intel_crtc *slave_crtc = to_intel_crtc(conn_state->crtc);
+		const struct intel_crtc_state *slave_crtc_state;
+
+		if (!slave_crtc)
+			continue;
+
+		slave_crtc_state =
+			intel_atomic_get_new_crtc_state(state, slave_crtc);
+
+		if (slave_crtc_state->master_transcoder !=
+		    crtc_state->cpu_transcoder)
+			continue;
+
+		intel_dp_stop_link_train(enc_to_intel_dp(slave_encoder),
+					 slave_crtc_state);
+	}
+
+	usleep_range(200, 400);
+
+	intel_dp_stop_link_train(enc_to_intel_dp(encoder),
+				 crtc_state);
+}
+
+static void intel_enable_ddi_dp(struct intel_atomic_state *state,
+				struct intel_encoder *encoder,
+				const struct intel_crtc_state *crtc_state,
+				const struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	enum port port = encoder->port;
+
+	if (port == PORT_A && DISPLAY_VER(dev_priv) < 9)
+		intel_dp_stop_link_train(intel_dp, crtc_state);
+
+	drm_connector_update_privacy_screen(conn_state);
+	intel_edp_backlight_on(crtc_state, conn_state);
+
+	if (!dig_port->lspcon.active || dig_port->dp.has_hdmi_sink)
+		intel_dp_set_infoframes(encoder, true, crtc_state, conn_state);
+
+	intel_audio_codec_enable(encoder, crtc_state, conn_state);
+
+	trans_port_sync_stop_link_train(state, encoder, crtc_state);
+}
+
+static i915_reg_t
+gen9_chicken_trans_reg_by_port(struct drm_i915_private *dev_priv,
+			       enum port port)
+{
+	static const enum transcoder trans[] = {
+		[PORT_A] = TRANSCODER_EDP,
+		[PORT_B] = TRANSCODER_A,
+		[PORT_C] = TRANSCODER_B,
+		[PORT_D] = TRANSCODER_C,
+		[PORT_E] = TRANSCODER_A,
+	};
+
+	drm_WARN_ON(&dev_priv->drm, DISPLAY_VER(dev_priv) < 9);
+
+	if (drm_WARN_ON(&dev_priv->drm, port < PORT_A || port > PORT_E))
+		port = PORT_A;
+
+	return CHICKEN_TRANS(trans[port]);
+}
+
+static void intel_enable_ddi_hdmi(struct intel_atomic_state *state,
+				  struct intel_encoder *encoder,
+				  const struct intel_crtc_state *crtc_state,
+				  const struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	struct drm_connector *connector = conn_state->connector;
+	enum port port = encoder->port;
+	enum phy phy = intel_port_to_phy(dev_priv, port);
+	u32 buf_ctl;
+
+	if (!intel_hdmi_handle_sink_scrambling(encoder, connector,
+					       crtc_state->hdmi_high_tmds_clock_ratio,
+					       crtc_state->hdmi_scrambling))
+		drm_dbg_kms(&dev_priv->drm,
+			    "[CONNECTOR:%d:%s] Failed to configure sink scrambling/TMDS bit clock ratio\n",
+			    connector->base.id, connector->name);
+
+	if (has_buf_trans_select(dev_priv))
+		hsw_prepare_hdmi_ddi_buffers(encoder, crtc_state);
+
+	encoder->set_signal_levels(encoder, crtc_state);
+
+	/* Display WA #1143: skl,kbl,cfl */
+	if (DISPLAY_VER(dev_priv) == 9 && !IS_BROXTON(dev_priv)) {
+		/*
+		 * For some reason these chicken bits have been
+		 * stuffed into a transcoder register, event though
+		 * the bits affect a specific DDI port rather than
+		 * a specific transcoder.
+		 */
+		i915_reg_t reg = gen9_chicken_trans_reg_by_port(dev_priv, port);
+		u32 val;
+
+		val = intel_de_read(dev_priv, reg);
+
+		if (port == PORT_E)
+			val |= DDIE_TRAINING_OVERRIDE_ENABLE |
+				DDIE_TRAINING_OVERRIDE_VALUE;
+		else
+			val |= DDI_TRAINING_OVERRIDE_ENABLE |
+				DDI_TRAINING_OVERRIDE_VALUE;
+
+		intel_de_write(dev_priv, reg, val);
+		intel_de_posting_read(dev_priv, reg);
+
+		udelay(1);
+
+		if (port == PORT_E)
+			val &= ~(DDIE_TRAINING_OVERRIDE_ENABLE |
+				 DDIE_TRAINING_OVERRIDE_VALUE);
+		else
+			val &= ~(DDI_TRAINING_OVERRIDE_ENABLE |
+				 DDI_TRAINING_OVERRIDE_VALUE);
+
+		intel_de_write(dev_priv, reg, val);
+	}
+
+	intel_ddi_power_up_lanes(encoder, crtc_state);
+
+	/* In HDMI/DVI mode, the port width, and swing/emphasis values
+	 * are ignored so nothing special needs to be done besides
+	 * enabling the port.
+	 *
+	 * On ADL_P the PHY link rate and lane count must be programmed but
+	 * these are both 0 for HDMI.
+	 */
+	buf_ctl = dig_port->saved_port_bits | DDI_BUF_CTL_ENABLE;
+	if (IS_ALDERLAKE_P(dev_priv) && intel_phy_is_tc(dev_priv, phy)) {
+		drm_WARN_ON(&dev_priv->drm, !intel_tc_port_in_legacy_mode(dig_port));
+		buf_ctl |= DDI_BUF_CTL_TC_PHY_OWNERSHIP;
+	}
+	intel_de_write(dev_priv, DDI_BUF_CTL(port), buf_ctl);
+
+	intel_audio_codec_enable(encoder, crtc_state, conn_state);
+}
+
+static void intel_enable_ddi(struct intel_atomic_state *state,
+			     struct intel_encoder *encoder,
+			     const struct intel_crtc_state *crtc_state,
+			     const struct drm_connector_state *conn_state)
+{
+	drm_WARN_ON(state->base.dev, crtc_state->has_pch_encoder);
+
+	if (!intel_crtc_is_bigjoiner_slave(crtc_state))
+		intel_ddi_enable_transcoder_func(encoder, crtc_state);
+
+	intel_vrr_enable(encoder, crtc_state);
+
+	intel_enable_transcoder(crtc_state);
+
+	intel_crtc_vblank_on(crtc_state);
+
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		intel_enable_ddi_hdmi(state, encoder, crtc_state, conn_state);
+	else
+		intel_enable_ddi_dp(state, encoder, crtc_state, conn_state);
+
+	/* Enable hdcp if it's desired */
+	if (conn_state->content_protection ==
+	    DRM_MODE_CONTENT_PROTECTION_DESIRED)
+		intel_hdcp_enable(to_intel_connector(conn_state->connector),
+				  crtc_state,
+				  (u8)conn_state->hdcp_content_type);
+}
+
+static void intel_disable_ddi_dp(struct intel_atomic_state *state,
+				 struct intel_encoder *encoder,
+				 const struct intel_crtc_state *old_crtc_state,
+				 const struct drm_connector_state *old_conn_state)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+
+	intel_dp->link_trained = false;
+
+	intel_audio_codec_disable(encoder, old_crtc_state, old_conn_state);
+
+	intel_psr_disable(intel_dp, old_crtc_state);
+	intel_edp_backlight_off(old_conn_state);
+	/* Disable the decompression in DP Sink */
+	intel_dp_sink_set_decompression_state(intel_dp, old_crtc_state,
+					      false);
+	/* Disable Ignore_MSA bit in DP Sink */
+	intel_dp_sink_set_msa_timing_par_ignore_state(intel_dp, old_crtc_state,
+						      false);
+}
+
+static void intel_disable_ddi_hdmi(struct intel_atomic_state *state,
+				   struct intel_encoder *encoder,
+				   const struct intel_crtc_state *old_crtc_state,
+				   const struct drm_connector_state *old_conn_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	struct drm_connector *connector = old_conn_state->connector;
+
+	intel_audio_codec_disable(encoder, old_crtc_state, old_conn_state);
+
+	if (!intel_hdmi_handle_sink_scrambling(encoder, connector,
+					       false, false))
+		drm_dbg_kms(&i915->drm,
+			    "[CONNECTOR:%d:%s] Failed to reset sink scrambling/TMDS bit clock ratio\n",
+			    connector->base.id, connector->name);
+}
+
+static void intel_disable_ddi(struct intel_atomic_state *state,
+			      struct intel_encoder *encoder,
+			      const struct intel_crtc_state *old_crtc_state,
+			      const struct drm_connector_state *old_conn_state)
+{
+	intel_hdcp_disable(to_intel_connector(old_conn_state->connector));
+
+	if (intel_crtc_has_type(old_crtc_state, INTEL_OUTPUT_HDMI))
+		intel_disable_ddi_hdmi(state, encoder, old_crtc_state,
+				       old_conn_state);
+	else
+		intel_disable_ddi_dp(state, encoder, old_crtc_state,
+				     old_conn_state);
+}
+
+static void intel_ddi_update_pipe_dp(struct intel_atomic_state *state,
+				     struct intel_encoder *encoder,
+				     const struct intel_crtc_state *crtc_state,
+				     const struct drm_connector_state *conn_state)
+{
+	intel_ddi_set_dp_msa(crtc_state, conn_state);
+
+	intel_dp_set_infoframes(encoder, true, crtc_state, conn_state);
+
+	intel_backlight_update(state, encoder, crtc_state, conn_state);
+	drm_connector_update_privacy_screen(conn_state);
+}
+
+void intel_ddi_update_pipe(struct intel_atomic_state *state,
+			   struct intel_encoder *encoder,
+			   const struct intel_crtc_state *crtc_state,
+			   const struct drm_connector_state *conn_state)
+{
+
+	if (!intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI) &&
+	    !intel_encoder_is_mst(encoder))
+		intel_ddi_update_pipe_dp(state, encoder, crtc_state,
+					 conn_state);
+
+	intel_hdcp_update_pipe(state, encoder, crtc_state, conn_state);
+}
+
+static void
+intel_ddi_update_prepare(struct intel_atomic_state *state,
+			 struct intel_encoder *encoder,
+			 struct intel_crtc *crtc)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	struct intel_crtc_state *crtc_state =
+		crtc ? intel_atomic_get_new_crtc_state(state, crtc) : NULL;
+	int required_lanes = crtc_state ? crtc_state->lane_count : 1;
+
+	drm_WARN_ON(state->base.dev, crtc && crtc->active);
+
+	intel_tc_port_get_link(enc_to_dig_port(encoder),
+		               required_lanes);
+	if (crtc_state && crtc_state->hw.active) {
+		struct intel_crtc *slave_crtc;
+
+		intel_update_active_dpll(state, crtc, encoder);
+
+		for_each_intel_crtc_in_pipe_mask(&i915->drm, slave_crtc,
+						 intel_crtc_bigjoiner_slave_pipes(crtc_state))
+			intel_update_active_dpll(state, slave_crtc, encoder);
+	}
+}
+
+static void
+intel_ddi_update_complete(struct intel_atomic_state *state,
+			  struct intel_encoder *encoder,
+			  struct intel_crtc *crtc)
+{
+	intel_tc_port_put_link(enc_to_dig_port(encoder));
+}
+
+static void
+intel_ddi_pre_pll_enable(struct intel_atomic_state *state,
+			 struct intel_encoder *encoder,
+			 const struct intel_crtc_state *crtc_state,
+			 const struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	enum phy phy = intel_port_to_phy(dev_priv, encoder->port);
+	bool is_tc_port = intel_phy_is_tc(dev_priv, phy);
+
+	if (is_tc_port)
+		intel_tc_port_get_link(dig_port, crtc_state->lane_count);
+
+	if (intel_crtc_has_dp_encoder(crtc_state) || is_tc_port) {
+		drm_WARN_ON(&dev_priv->drm, dig_port->aux_wakeref);
+		dig_port->aux_wakeref =
+			intel_display_power_get(dev_priv,
+						intel_ddi_main_link_aux_domain(dig_port));
+	}
+
+	if (is_tc_port && !intel_tc_port_in_tbt_alt_mode(dig_port))
+		/*
+		 * Program the lane count for static/dynamic connections on
+		 * Type-C ports.  Skip this step for TBT.
+		 */
+		intel_tc_port_set_fia_lane_count(dig_port, crtc_state->lane_count);
+	else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
+		bxt_ddi_phy_set_lane_optim_mask(encoder,
+						crtc_state->lane_lat_optim_mask);
+}
+
+static void adlp_tbt_to_dp_alt_switch_wa(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum tc_port tc_port = intel_port_to_tc(i915, encoder->port);
+	int ln;
+
+	for (ln = 0; ln < 2; ln++)
+		intel_dkl_phy_rmw(i915, DKL_PCS_DW5(tc_port), ln, DKL_PCS_DW5_CORE_SOFTRESET, 0);
+}
+
+static void intel_ddi_prepare_link_retrain(struct intel_dp *intel_dp,
+					   const struct intel_crtc_state *crtc_state)
+{
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	struct intel_encoder *encoder = &dig_port->base;
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	enum port port = encoder->port;
+	u32 dp_tp_ctl, ddi_buf_ctl;
+	bool wait = false;
+
+	dp_tp_ctl = intel_de_read(dev_priv, dp_tp_ctl_reg(encoder, crtc_state));
+
+	if (dp_tp_ctl & DP_TP_CTL_ENABLE) {
+		ddi_buf_ctl = intel_de_read(dev_priv, DDI_BUF_CTL(port));
+		if (ddi_buf_ctl & DDI_BUF_CTL_ENABLE) {
+			intel_de_write(dev_priv, DDI_BUF_CTL(port),
+				       ddi_buf_ctl & ~DDI_BUF_CTL_ENABLE);
+			wait = true;
+		}
+
+		dp_tp_ctl &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK);
+		dp_tp_ctl |= DP_TP_CTL_LINK_TRAIN_PAT1;
+		intel_de_write(dev_priv, dp_tp_ctl_reg(encoder, crtc_state), dp_tp_ctl);
+		intel_de_posting_read(dev_priv, dp_tp_ctl_reg(encoder, crtc_state));
+
+		if (wait)
+			intel_wait_ddi_buf_idle(dev_priv, port);
+	}
+
+	dp_tp_ctl = DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_PAT1;
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST)) {
+		dp_tp_ctl |= DP_TP_CTL_MODE_MST;
+	} else {
+		dp_tp_ctl |= DP_TP_CTL_MODE_SST;
+		if (drm_dp_enhanced_frame_cap(intel_dp->dpcd))
+			dp_tp_ctl |= DP_TP_CTL_ENHANCED_FRAME_ENABLE;
+	}
+	intel_de_write(dev_priv, dp_tp_ctl_reg(encoder, crtc_state), dp_tp_ctl);
+	intel_de_posting_read(dev_priv, dp_tp_ctl_reg(encoder, crtc_state));
+
+	if (IS_ALDERLAKE_P(dev_priv) &&
+	    (intel_tc_port_in_dp_alt_mode(dig_port) || intel_tc_port_in_legacy_mode(dig_port)))
+		adlp_tbt_to_dp_alt_switch_wa(encoder);
+
+	intel_dp->DP |= DDI_BUF_CTL_ENABLE;
+	intel_de_write(dev_priv, DDI_BUF_CTL(port), intel_dp->DP);
+	intel_de_posting_read(dev_priv, DDI_BUF_CTL(port));
+
+	intel_wait_ddi_buf_active(dev_priv, port);
+}
+
+static void intel_ddi_set_link_train(struct intel_dp *intel_dp,
+				     const struct intel_crtc_state *crtc_state,
+				     u8 dp_train_pat)
+{
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	u32 temp;
+
+	temp = intel_de_read(dev_priv, dp_tp_ctl_reg(encoder, crtc_state));
+
+	temp &= ~DP_TP_CTL_LINK_TRAIN_MASK;
+	switch (intel_dp_training_pattern_symbol(dp_train_pat)) {
+	case DP_TRAINING_PATTERN_DISABLE:
+		temp |= DP_TP_CTL_LINK_TRAIN_NORMAL;
+		break;
+	case DP_TRAINING_PATTERN_1:
+		temp |= DP_TP_CTL_LINK_TRAIN_PAT1;
+		break;
+	case DP_TRAINING_PATTERN_2:
+		temp |= DP_TP_CTL_LINK_TRAIN_PAT2;
+		break;
+	case DP_TRAINING_PATTERN_3:
+		temp |= DP_TP_CTL_LINK_TRAIN_PAT3;
+		break;
+	case DP_TRAINING_PATTERN_4:
+		temp |= DP_TP_CTL_LINK_TRAIN_PAT4;
+		break;
+	}
+
+	intel_de_write(dev_priv, dp_tp_ctl_reg(encoder, crtc_state), temp);
+}
+
+static void intel_ddi_set_idle_link_train(struct intel_dp *intel_dp,
+					  const struct intel_crtc_state *crtc_state)
+{
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	enum port port = encoder->port;
+	u32 val;
+
+	val = intel_de_read(dev_priv, dp_tp_ctl_reg(encoder, crtc_state));
+	val &= ~DP_TP_CTL_LINK_TRAIN_MASK;
+	val |= DP_TP_CTL_LINK_TRAIN_IDLE;
+	intel_de_write(dev_priv, dp_tp_ctl_reg(encoder, crtc_state), val);
+
+	/*
+	 * Until TGL on PORT_A we can have only eDP in SST mode. There the only
+	 * reason we need to set idle transmission mode is to work around a HW
+	 * issue where we enable the pipe while not in idle link-training mode.
+	 * In this case there is requirement to wait for a minimum number of
+	 * idle patterns to be sent.
+	 */
+	if (port == PORT_A && DISPLAY_VER(dev_priv) < 12)
+		return;
+
+	if (intel_de_wait_for_set(dev_priv,
+				  dp_tp_status_reg(encoder, crtc_state),
+				  DP_TP_STATUS_IDLE_DONE, 1))
+		drm_err(&dev_priv->drm,
+			"Timed out waiting for DP idle patterns\n");
+}
+
+static bool intel_ddi_is_audio_enabled(struct drm_i915_private *dev_priv,
+				       enum transcoder cpu_transcoder)
+{
+	if (cpu_transcoder == TRANSCODER_EDP)
+		return false;
+
+	if (!intel_display_power_is_enabled(dev_priv, POWER_DOMAIN_AUDIO_MMIO))
+		return false;
+
+	return intel_de_read(dev_priv, HSW_AUD_PIN_ELD_CP_VLD) &
+		AUDIO_OUTPUT_ENABLE(cpu_transcoder);
+}
+
+void intel_ddi_compute_min_voltage_level(struct drm_i915_private *dev_priv,
+					 struct intel_crtc_state *crtc_state)
+{
+	if (DISPLAY_VER(dev_priv) >= 12 && crtc_state->port_clock > 594000)
+		crtc_state->min_voltage_level = 2;
+	else if (IS_JSL_EHL(dev_priv) && crtc_state->port_clock > 594000)
+		crtc_state->min_voltage_level = 3;
+	else if (DISPLAY_VER(dev_priv) >= 11 && crtc_state->port_clock > 594000)
+		crtc_state->min_voltage_level = 1;
+}
+
+static enum transcoder bdw_transcoder_master_readout(struct drm_i915_private *dev_priv,
+						     enum transcoder cpu_transcoder)
+{
+	u32 master_select;
+
+	if (DISPLAY_VER(dev_priv) >= 11) {
+		u32 ctl2 = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL2(cpu_transcoder));
+
+		if ((ctl2 & PORT_SYNC_MODE_ENABLE) == 0)
+			return INVALID_TRANSCODER;
+
+		master_select = REG_FIELD_GET(PORT_SYNC_MODE_MASTER_SELECT_MASK, ctl2);
+	} else {
+		u32 ctl = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(cpu_transcoder));
+
+		if ((ctl & TRANS_DDI_PORT_SYNC_ENABLE) == 0)
+			return INVALID_TRANSCODER;
+
+		master_select = REG_FIELD_GET(TRANS_DDI_PORT_SYNC_MASTER_SELECT_MASK, ctl);
+	}
+
+	if (master_select == 0)
+		return TRANSCODER_EDP;
+	else
+		return master_select - 1;
+}
+
+static void bdw_get_trans_port_sync_config(struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+	u32 transcoders = BIT(TRANSCODER_A) | BIT(TRANSCODER_B) |
+		BIT(TRANSCODER_C) | BIT(TRANSCODER_D);
+	enum transcoder cpu_transcoder;
+
+	crtc_state->master_transcoder =
+		bdw_transcoder_master_readout(dev_priv, crtc_state->cpu_transcoder);
+
+	for_each_cpu_transcoder_masked(dev_priv, cpu_transcoder, transcoders) {
+		enum intel_display_power_domain power_domain;
+		intel_wakeref_t trans_wakeref;
+
+		power_domain = POWER_DOMAIN_TRANSCODER(cpu_transcoder);
+		trans_wakeref = intel_display_power_get_if_enabled(dev_priv,
+								   power_domain);
+
+		if (!trans_wakeref)
+			continue;
+
+		if (bdw_transcoder_master_readout(dev_priv, cpu_transcoder) ==
+		    crtc_state->cpu_transcoder)
+			crtc_state->sync_mode_slaves_mask |= BIT(cpu_transcoder);
+
+		intel_display_power_put(dev_priv, power_domain, trans_wakeref);
+	}
+
+	drm_WARN_ON(&dev_priv->drm,
+		    crtc_state->master_transcoder != INVALID_TRANSCODER &&
+		    crtc_state->sync_mode_slaves_mask);
+}
+
+static void intel_ddi_read_func_ctl(struct intel_encoder *encoder,
+				    struct intel_crtc_state *pipe_config)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+	enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	u32 temp, flags = 0;
+
+	temp = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(cpu_transcoder));
+	if (temp & TRANS_DDI_PHSYNC)
+		flags |= DRM_MODE_FLAG_PHSYNC;
+	else
+		flags |= DRM_MODE_FLAG_NHSYNC;
+	if (temp & TRANS_DDI_PVSYNC)
+		flags |= DRM_MODE_FLAG_PVSYNC;
+	else
+		flags |= DRM_MODE_FLAG_NVSYNC;
+
+	pipe_config->hw.adjusted_mode.flags |= flags;
+
+	switch (temp & TRANS_DDI_BPC_MASK) {
+	case TRANS_DDI_BPC_6:
+		pipe_config->pipe_bpp = 18;
+		break;
+	case TRANS_DDI_BPC_8:
+		pipe_config->pipe_bpp = 24;
+		break;
+	case TRANS_DDI_BPC_10:
+		pipe_config->pipe_bpp = 30;
+		break;
+	case TRANS_DDI_BPC_12:
+		pipe_config->pipe_bpp = 36;
+		break;
+	default:
+		break;
+	}
+
+	switch (temp & TRANS_DDI_MODE_SELECT_MASK) {
+	case TRANS_DDI_MODE_SELECT_HDMI:
+		pipe_config->has_hdmi_sink = true;
+
+		pipe_config->infoframes.enable |=
+			intel_hdmi_infoframes_enabled(encoder, pipe_config);
+
+		if (pipe_config->infoframes.enable)
+			pipe_config->has_infoframe = true;
+
+		if (temp & TRANS_DDI_HDMI_SCRAMBLING)
+			pipe_config->hdmi_scrambling = true;
+		if (temp & TRANS_DDI_HIGH_TMDS_CHAR_RATE)
+			pipe_config->hdmi_high_tmds_clock_ratio = true;
+		fallthrough;
+	case TRANS_DDI_MODE_SELECT_DVI:
+		pipe_config->output_types |= BIT(INTEL_OUTPUT_HDMI);
+		pipe_config->lane_count = 4;
+		break;
+	case TRANS_DDI_MODE_SELECT_DP_SST:
+		if (encoder->type == INTEL_OUTPUT_EDP)
+			pipe_config->output_types |= BIT(INTEL_OUTPUT_EDP);
+		else
+			pipe_config->output_types |= BIT(INTEL_OUTPUT_DP);
+		pipe_config->lane_count =
+			((temp & DDI_PORT_WIDTH_MASK) >> DDI_PORT_WIDTH_SHIFT) + 1;
+
+		intel_cpu_transcoder_get_m1_n1(crtc, cpu_transcoder,
+					       &pipe_config->dp_m_n);
+		intel_cpu_transcoder_get_m2_n2(crtc, cpu_transcoder,
+					       &pipe_config->dp_m2_n2);
+
+		if (DISPLAY_VER(dev_priv) >= 11) {
+			i915_reg_t dp_tp_ctl = dp_tp_ctl_reg(encoder, pipe_config);
+
+			pipe_config->fec_enable =
+				intel_de_read(dev_priv, dp_tp_ctl) & DP_TP_CTL_FEC_ENABLE;
+
+			drm_dbg_kms(&dev_priv->drm,
+				    "[ENCODER:%d:%s] Fec status: %u\n",
+				    encoder->base.base.id, encoder->base.name,
+				    pipe_config->fec_enable);
+		}
+
+		if (dig_port->lspcon.active && dig_port->dp.has_hdmi_sink)
+			pipe_config->infoframes.enable |=
+				intel_lspcon_infoframes_enabled(encoder, pipe_config);
+		else
+			pipe_config->infoframes.enable |=
+				intel_hdmi_infoframes_enabled(encoder, pipe_config);
+		break;
+	case TRANS_DDI_MODE_SELECT_FDI_OR_128B132B:
+		if (!HAS_DP20(dev_priv)) {
+			/* FDI */
+			pipe_config->output_types |= BIT(INTEL_OUTPUT_ANALOG);
+			break;
+		}
+		fallthrough; /* 128b/132b */
+	case TRANS_DDI_MODE_SELECT_DP_MST:
+		pipe_config->output_types |= BIT(INTEL_OUTPUT_DP_MST);
+		pipe_config->lane_count =
+			((temp & DDI_PORT_WIDTH_MASK) >> DDI_PORT_WIDTH_SHIFT) + 1;
+
+		if (DISPLAY_VER(dev_priv) >= 12)
+			pipe_config->mst_master_transcoder =
+					REG_FIELD_GET(TRANS_DDI_MST_TRANSPORT_SELECT_MASK, temp);
+
+		intel_cpu_transcoder_get_m1_n1(crtc, cpu_transcoder,
+					       &pipe_config->dp_m_n);
+
+		pipe_config->infoframes.enable |=
+			intel_hdmi_infoframes_enabled(encoder, pipe_config);
+		break;
+	default:
+		break;
+	}
+}
+
+static void intel_ddi_get_config(struct intel_encoder *encoder,
+				 struct intel_crtc_state *pipe_config)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
+
+	/* XXX: DSI transcoder paranoia */
+	if (drm_WARN_ON(&dev_priv->drm, transcoder_is_dsi(cpu_transcoder)))
+		return;
+
+	intel_ddi_read_func_ctl(encoder, pipe_config);
+
+	intel_ddi_mso_get_config(encoder, pipe_config);
+
+	pipe_config->has_audio =
+		intel_ddi_is_audio_enabled(dev_priv, cpu_transcoder);
+
+	if (encoder->type == INTEL_OUTPUT_EDP)
+		intel_edp_fixup_vbt_bpp(encoder, pipe_config->pipe_bpp);
+
+	ddi_dotclock_get(pipe_config);
+
+	if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
+		pipe_config->lane_lat_optim_mask =
+			bxt_ddi_phy_get_lane_lat_optim_mask(encoder);
+
+	intel_ddi_compute_min_voltage_level(dev_priv, pipe_config);
+
+	intel_hdmi_read_gcp_infoframe(encoder, pipe_config);
+
+	intel_read_infoframe(encoder, pipe_config,
+			     HDMI_INFOFRAME_TYPE_AVI,
+			     &pipe_config->infoframes.avi);
+	intel_read_infoframe(encoder, pipe_config,
+			     HDMI_INFOFRAME_TYPE_SPD,
+			     &pipe_config->infoframes.spd);
+	intel_read_infoframe(encoder, pipe_config,
+			     HDMI_INFOFRAME_TYPE_VENDOR,
+			     &pipe_config->infoframes.hdmi);
+	intel_read_infoframe(encoder, pipe_config,
+			     HDMI_INFOFRAME_TYPE_DRM,
+			     &pipe_config->infoframes.drm);
+
+	if (DISPLAY_VER(dev_priv) >= 8)
+		bdw_get_trans_port_sync_config(pipe_config);
+
+	intel_read_dp_sdp(encoder, pipe_config, HDMI_PACKET_TYPE_GAMUT_METADATA);
+	intel_read_dp_sdp(encoder, pipe_config, DP_SDP_VSC);
+
+	intel_psr_get_config(encoder, pipe_config);
+}
+
+void intel_ddi_get_clock(struct intel_encoder *encoder,
+			 struct intel_crtc_state *crtc_state,
+			 struct intel_shared_dpll *pll)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum icl_port_dpll_id port_dpll_id = ICL_PORT_DPLL_DEFAULT;
+	struct icl_port_dpll *port_dpll = &crtc_state->icl_port_dplls[port_dpll_id];
+	bool pll_active;
+
+	if (drm_WARN_ON(&i915->drm, !pll))
+		return;
+
+	port_dpll->pll = pll;
+	pll_active = intel_dpll_get_hw_state(i915, pll, &port_dpll->hw_state);
+	drm_WARN_ON(&i915->drm, !pll_active);
+
+	icl_set_active_port_dpll(crtc_state, port_dpll_id);
+
+	crtc_state->port_clock = intel_dpll_get_freq(i915, crtc_state->shared_dpll,
+						     &crtc_state->dpll_hw_state);
+}
+
+static void dg2_ddi_get_config(struct intel_encoder *encoder,
+				struct intel_crtc_state *crtc_state)
+{
+	intel_mpllb_readout_hw_state(encoder, &crtc_state->mpllb_state);
+	crtc_state->port_clock = intel_mpllb_calc_port_clock(encoder, &crtc_state->mpllb_state);
+
+	intel_ddi_get_config(encoder, crtc_state);
+}
+
+static void adls_ddi_get_config(struct intel_encoder *encoder,
+				struct intel_crtc_state *crtc_state)
+{
+	intel_ddi_get_clock(encoder, crtc_state, adls_ddi_get_pll(encoder));
+	intel_ddi_get_config(encoder, crtc_state);
+}
+
+static void rkl_ddi_get_config(struct intel_encoder *encoder,
+			       struct intel_crtc_state *crtc_state)
+{
+	intel_ddi_get_clock(encoder, crtc_state, rkl_ddi_get_pll(encoder));
+	intel_ddi_get_config(encoder, crtc_state);
+}
+
+static void dg1_ddi_get_config(struct intel_encoder *encoder,
+			       struct intel_crtc_state *crtc_state)
+{
+	intel_ddi_get_clock(encoder, crtc_state, dg1_ddi_get_pll(encoder));
+	intel_ddi_get_config(encoder, crtc_state);
+}
+
+static void icl_ddi_combo_get_config(struct intel_encoder *encoder,
+				     struct intel_crtc_state *crtc_state)
+{
+	intel_ddi_get_clock(encoder, crtc_state, icl_ddi_combo_get_pll(encoder));
+	intel_ddi_get_config(encoder, crtc_state);
+}
+
+static void icl_ddi_tc_get_clock(struct intel_encoder *encoder,
+				 struct intel_crtc_state *crtc_state,
+				 struct intel_shared_dpll *pll)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum icl_port_dpll_id port_dpll_id;
+	struct icl_port_dpll *port_dpll;
+	bool pll_active;
+
+	if (drm_WARN_ON(&i915->drm, !pll))
+		return;
+
+	if (intel_get_shared_dpll_id(i915, pll) == DPLL_ID_ICL_TBTPLL)
+		port_dpll_id = ICL_PORT_DPLL_DEFAULT;
+	else
+		port_dpll_id = ICL_PORT_DPLL_MG_PHY;
+
+	port_dpll = &crtc_state->icl_port_dplls[port_dpll_id];
+
+	port_dpll->pll = pll;
+	pll_active = intel_dpll_get_hw_state(i915, pll, &port_dpll->hw_state);
+	drm_WARN_ON(&i915->drm, !pll_active);
+
+	icl_set_active_port_dpll(crtc_state, port_dpll_id);
+
+	if (intel_get_shared_dpll_id(i915, crtc_state->shared_dpll) == DPLL_ID_ICL_TBTPLL)
+		crtc_state->port_clock = icl_calc_tbt_pll_link(i915, encoder->port);
+	else
+		crtc_state->port_clock = intel_dpll_get_freq(i915, crtc_state->shared_dpll,
+							     &crtc_state->dpll_hw_state);
+}
+
+static void icl_ddi_tc_get_config(struct intel_encoder *encoder,
+				  struct intel_crtc_state *crtc_state)
+{
+	icl_ddi_tc_get_clock(encoder, crtc_state, icl_ddi_tc_get_pll(encoder));
+	intel_ddi_get_config(encoder, crtc_state);
+}
+
+static void bxt_ddi_get_config(struct intel_encoder *encoder,
+			       struct intel_crtc_state *crtc_state)
+{
+	intel_ddi_get_clock(encoder, crtc_state, bxt_ddi_get_pll(encoder));
+	intel_ddi_get_config(encoder, crtc_state);
+}
+
+static void skl_ddi_get_config(struct intel_encoder *encoder,
+			       struct intel_crtc_state *crtc_state)
+{
+	intel_ddi_get_clock(encoder, crtc_state, skl_ddi_get_pll(encoder));
+	intel_ddi_get_config(encoder, crtc_state);
+}
+
+void hsw_ddi_get_config(struct intel_encoder *encoder,
+			struct intel_crtc_state *crtc_state)
+{
+	intel_ddi_get_clock(encoder, crtc_state, hsw_ddi_get_pll(encoder));
+	intel_ddi_get_config(encoder, crtc_state);
+}
+
+static void intel_ddi_sync_state(struct intel_encoder *encoder,
+				 const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum phy phy = intel_port_to_phy(i915, encoder->port);
+
+	if (intel_phy_is_tc(i915, phy))
+		intel_tc_port_sanitize_mode(enc_to_dig_port(encoder));
+
+	if (crtc_state && intel_crtc_has_dp_encoder(crtc_state))
+		intel_dp_sync_state(encoder, crtc_state);
+}
+
+static bool intel_ddi_initial_fastset_check(struct intel_encoder *encoder,
+					    struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum phy phy = intel_port_to_phy(i915, encoder->port);
+	bool fastset = true;
+
+	if (intel_phy_is_tc(i915, phy)) {
+		drm_dbg_kms(&i915->drm, "[ENCODER:%d:%s] Forcing full modeset to compute TC port DPLLs\n",
+			    encoder->base.base.id, encoder->base.name);
+		crtc_state->uapi.mode_changed = true;
+		fastset = false;
+	}
+
+	if (intel_crtc_has_dp_encoder(crtc_state) &&
+	    !intel_dp_initial_fastset_check(encoder, crtc_state))
+		fastset = false;
+
+	return fastset;
+}
+
+static enum intel_output_type
+intel_ddi_compute_output_type(struct intel_encoder *encoder,
+			      struct intel_crtc_state *crtc_state,
+			      struct drm_connector_state *conn_state)
+{
+	switch (conn_state->connector->connector_type) {
+	case DRM_MODE_CONNECTOR_HDMIA:
+		return INTEL_OUTPUT_HDMI;
+	case DRM_MODE_CONNECTOR_eDP:
+		return INTEL_OUTPUT_EDP;
+	case DRM_MODE_CONNECTOR_DisplayPort:
+		return INTEL_OUTPUT_DP;
+	default:
+		MISSING_CASE(conn_state->connector->connector_type);
+		return INTEL_OUTPUT_UNUSED;
+	}
+}
+
+static int intel_ddi_compute_config(struct intel_encoder *encoder,
+				    struct intel_crtc_state *pipe_config,
+				    struct drm_connector_state *conn_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	enum port port = encoder->port;
+	int ret;
+
+	if (HAS_TRANSCODER(dev_priv, TRANSCODER_EDP) && port == PORT_A)
+		pipe_config->cpu_transcoder = TRANSCODER_EDP;
+
+	if (intel_crtc_has_type(pipe_config, INTEL_OUTPUT_HDMI)) {
+		ret = intel_hdmi_compute_config(encoder, pipe_config, conn_state);
+	} else {
+		ret = intel_dp_compute_config(encoder, pipe_config, conn_state);
+	}
+
+	if (ret)
+		return ret;
+
+	if (IS_HASWELL(dev_priv) && crtc->pipe == PIPE_A &&
+	    pipe_config->cpu_transcoder == TRANSCODER_EDP)
+		pipe_config->pch_pfit.force_thru =
+			pipe_config->pch_pfit.enabled ||
+			pipe_config->crc_enabled;
+
+	if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
+		pipe_config->lane_lat_optim_mask =
+			bxt_ddi_phy_calc_lane_lat_optim_mask(pipe_config->lane_count);
+
+	intel_ddi_compute_min_voltage_level(dev_priv, pipe_config);
+
+	return 0;
+}
+
+static bool mode_equal(const struct drm_display_mode *mode1,
+		       const struct drm_display_mode *mode2)
+{
+	return drm_mode_match(mode1, mode2,
+			      DRM_MODE_MATCH_TIMINGS |
+			      DRM_MODE_MATCH_FLAGS |
+			      DRM_MODE_MATCH_3D_FLAGS) &&
+		mode1->clock == mode2->clock; /* we want an exact match */
+}
+
+static bool m_n_equal(const struct intel_link_m_n *m_n_1,
+		      const struct intel_link_m_n *m_n_2)
+{
+	return m_n_1->tu == m_n_2->tu &&
+		m_n_1->data_m == m_n_2->data_m &&
+		m_n_1->data_n == m_n_2->data_n &&
+		m_n_1->link_m == m_n_2->link_m &&
+		m_n_1->link_n == m_n_2->link_n;
+}
+
+static bool crtcs_port_sync_compatible(const struct intel_crtc_state *crtc_state1,
+				       const struct intel_crtc_state *crtc_state2)
+{
+	return crtc_state1->hw.active && crtc_state2->hw.active &&
+		crtc_state1->output_types == crtc_state2->output_types &&
+		crtc_state1->output_format == crtc_state2->output_format &&
+		crtc_state1->lane_count == crtc_state2->lane_count &&
+		crtc_state1->port_clock == crtc_state2->port_clock &&
+		mode_equal(&crtc_state1->hw.adjusted_mode,
+			   &crtc_state2->hw.adjusted_mode) &&
+		m_n_equal(&crtc_state1->dp_m_n, &crtc_state2->dp_m_n);
+}
+
+static u8
+intel_ddi_port_sync_transcoders(const struct intel_crtc_state *ref_crtc_state,
+				int tile_group_id)
+{
+	struct drm_connector *connector;
+	const struct drm_connector_state *conn_state;
+	struct drm_i915_private *dev_priv = to_i915(ref_crtc_state->uapi.crtc->dev);
+	struct intel_atomic_state *state =
+		to_intel_atomic_state(ref_crtc_state->uapi.state);
+	u8 transcoders = 0;
+	int i;
+
+	/*
+	 * We don't enable port sync on BDW due to missing w/as and
+	 * due to not having adjusted the modeset sequence appropriately.
+	 */
+	if (DISPLAY_VER(dev_priv) < 9)
+		return 0;
+
+	if (!intel_crtc_has_type(ref_crtc_state, INTEL_OUTPUT_DP))
+		return 0;
+
+	for_each_new_connector_in_state(&state->base, connector, conn_state, i) {
+		struct intel_crtc *crtc = to_intel_crtc(conn_state->crtc);
+		const struct intel_crtc_state *crtc_state;
+
+		if (!crtc)
+			continue;
+
+		if (!connector->has_tile ||
+		    connector->tile_group->id !=
+		    tile_group_id)
+			continue;
+		crtc_state = intel_atomic_get_new_crtc_state(state,
+							     crtc);
+		if (!crtcs_port_sync_compatible(ref_crtc_state,
+						crtc_state))
+			continue;
+		transcoders |= BIT(crtc_state->cpu_transcoder);
+	}
+
+	return transcoders;
+}
+
+static int intel_ddi_compute_config_late(struct intel_encoder *encoder,
+					 struct intel_crtc_state *crtc_state,
+					 struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	struct drm_connector *connector = conn_state->connector;
+	u8 port_sync_transcoders = 0;
+
+	drm_dbg_kms(&i915->drm, "[ENCODER:%d:%s] [CRTC:%d:%s]",
+		    encoder->base.base.id, encoder->base.name,
+		    crtc_state->uapi.crtc->base.id, crtc_state->uapi.crtc->name);
+
+	if (connector->has_tile)
+		port_sync_transcoders = intel_ddi_port_sync_transcoders(crtc_state,
+									connector->tile_group->id);
+
+	/*
+	 * EDP Transcoders cannot be ensalved
+	 * make them a master always when present
+	 */
+	if (port_sync_transcoders & BIT(TRANSCODER_EDP))
+		crtc_state->master_transcoder = TRANSCODER_EDP;
+	else
+		crtc_state->master_transcoder = ffs(port_sync_transcoders) - 1;
+
+	if (crtc_state->master_transcoder == crtc_state->cpu_transcoder) {
+		crtc_state->master_transcoder = INVALID_TRANSCODER;
+		crtc_state->sync_mode_slaves_mask =
+			port_sync_transcoders & ~BIT(crtc_state->cpu_transcoder);
+	}
+
+	return 0;
+}
+
+static void intel_ddi_encoder_destroy(struct drm_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->dev);
+	struct intel_digital_port *dig_port = enc_to_dig_port(to_intel_encoder(encoder));
+	enum phy phy = intel_port_to_phy(i915, dig_port->base.port);
+
+	intel_dp_encoder_flush_work(encoder);
+	if (intel_phy_is_tc(i915, phy))
+		intel_tc_port_flush_work(dig_port);
+	intel_display_power_flush_work(i915);
+
+	drm_encoder_cleanup(encoder);
+	kfree(dig_port->hdcp_port_data.streams);
+	kfree(dig_port);
+}
+
+static void intel_ddi_encoder_reset(struct drm_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(to_intel_encoder(encoder));
+	struct intel_digital_port *dig_port = enc_to_dig_port(to_intel_encoder(encoder));
+	enum phy phy = intel_port_to_phy(i915, dig_port->base.port);
+
+	intel_dp->reset_link_params = true;
+
+	intel_pps_encoder_reset(intel_dp);
+
+	if (intel_phy_is_tc(i915, phy))
+		intel_tc_port_init_mode(dig_port);
+}
+
+static const struct drm_encoder_funcs intel_ddi_funcs = {
+	.reset = intel_ddi_encoder_reset,
+	.destroy = intel_ddi_encoder_destroy,
+};
+
+static struct intel_connector *
+intel_ddi_init_dp_connector(struct intel_digital_port *dig_port)
+{
+	struct intel_connector *connector;
+	enum port port = dig_port->base.port;
+
+	connector = intel_connector_alloc();
+	if (!connector)
+		return NULL;
+
+	dig_port->dp.output_reg = DDI_BUF_CTL(port);
+	dig_port->dp.prepare_link_retrain = intel_ddi_prepare_link_retrain;
+	dig_port->dp.set_link_train = intel_ddi_set_link_train;
+	dig_port->dp.set_idle_link_train = intel_ddi_set_idle_link_train;
+
+	dig_port->dp.voltage_max = intel_ddi_dp_voltage_max;
+	dig_port->dp.preemph_max = intel_ddi_dp_preemph_max;
+
+	if (!intel_dp_init_connector(dig_port, connector)) {
+		kfree(connector);
+		return NULL;
+	}
+
+	if (dig_port->base.type == INTEL_OUTPUT_EDP) {
+		struct drm_device *dev = dig_port->base.base.dev;
+		struct drm_privacy_screen *privacy_screen;
+
+		privacy_screen = drm_privacy_screen_get(dev->dev, NULL);
+		if (!IS_ERR(privacy_screen)) {
+			drm_connector_attach_privacy_screen_provider(&connector->base,
+								     privacy_screen);
+		} else if (PTR_ERR(privacy_screen) != -ENODEV) {
+			drm_warn(dev, "Error getting privacy-screen\n");
+		}
+	}
+
+	return connector;
+}
+
+static int modeset_pipe(struct drm_crtc *crtc,
+			struct drm_modeset_acquire_ctx *ctx)
+{
+	struct drm_atomic_state *state;
+	struct drm_crtc_state *crtc_state;
+	int ret;
+
+	state = drm_atomic_state_alloc(crtc->dev);
+	if (!state)
+		return -ENOMEM;
+
+	state->acquire_ctx = ctx;
+
+	crtc_state = drm_atomic_get_crtc_state(state, crtc);
+	if (IS_ERR(crtc_state)) {
+		ret = PTR_ERR(crtc_state);
+		goto out;
+	}
+
+	crtc_state->connectors_changed = true;
+
+	ret = drm_atomic_commit(state);
+out:
+	drm_atomic_state_put(state);
+
+	return ret;
+}
+
+static int intel_hdmi_reset_link(struct intel_encoder *encoder,
+				 struct drm_modeset_acquire_ctx *ctx)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_hdmi *hdmi = enc_to_intel_hdmi(encoder);
+	struct intel_connector *connector = hdmi->attached_connector;
+	struct i2c_adapter *adapter =
+		intel_gmbus_get_adapter(dev_priv, hdmi->ddc_bus);
+	struct drm_connector_state *conn_state;
+	struct intel_crtc_state *crtc_state;
+	struct intel_crtc *crtc;
+	u8 config;
+	int ret;
+
+	if (!connector || connector->base.status != connector_status_connected)
+		return 0;
+
+	ret = drm_modeset_lock(&dev_priv->drm.mode_config.connection_mutex,
+			       ctx);
+	if (ret)
+		return ret;
+
+	conn_state = connector->base.state;
+
+	crtc = to_intel_crtc(conn_state->crtc);
+	if (!crtc)
+		return 0;
+
+	ret = drm_modeset_lock(&crtc->base.mutex, ctx);
+	if (ret)
+		return ret;
+
+	crtc_state = to_intel_crtc_state(crtc->base.state);
+
+	drm_WARN_ON(&dev_priv->drm,
+		    !intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI));
+
+	if (!crtc_state->hw.active)
+		return 0;
+
+	if (!crtc_state->hdmi_high_tmds_clock_ratio &&
+	    !crtc_state->hdmi_scrambling)
+		return 0;
+
+	if (conn_state->commit &&
+	    !try_wait_for_completion(&conn_state->commit->hw_done))
+		return 0;
+
+	ret = drm_scdc_readb(adapter, SCDC_TMDS_CONFIG, &config);
+	if (ret < 0) {
+		drm_err(&dev_priv->drm, "Failed to read TMDS config: %d\n",
+			ret);
+		return 0;
+	}
+
+	if (!!(config & SCDC_TMDS_BIT_CLOCK_RATIO_BY_40) ==
+	    crtc_state->hdmi_high_tmds_clock_ratio &&
+	    !!(config & SCDC_SCRAMBLING_ENABLE) ==
+	    crtc_state->hdmi_scrambling)
+		return 0;
+
+	/*
+	 * HDMI 2.0 says that one should not send scrambled data
+	 * prior to configuring the sink scrambling, and that
+	 * TMDS clock/data transmission should be suspended when
+	 * changing the TMDS clock rate in the sink. So let's
+	 * just do a full modeset here, even though some sinks
+	 * would be perfectly happy if were to just reconfigure
+	 * the SCDC settings on the fly.
+	 */
+	return modeset_pipe(&crtc->base, ctx);
+}
+
+static enum intel_hotplug_state
+intel_ddi_hotplug(struct intel_encoder *encoder,
+		  struct intel_connector *connector)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	struct intel_dp *intel_dp = &dig_port->dp;
+	enum phy phy = intel_port_to_phy(i915, encoder->port);
+	bool is_tc = intel_phy_is_tc(i915, phy);
+	struct drm_modeset_acquire_ctx ctx;
+	enum intel_hotplug_state state;
+	int ret;
+
+	if (intel_dp->compliance.test_active &&
+	    intel_dp->compliance.test_type == DP_TEST_LINK_PHY_TEST_PATTERN) {
+		intel_dp_phy_test(encoder);
+		/* just do the PHY test and nothing else */
+		return INTEL_HOTPLUG_UNCHANGED;
+	}
+
+	state = intel_encoder_hotplug(encoder, connector);
+
+	drm_modeset_acquire_init(&ctx, 0);
+
+	for (;;) {
+		if (connector->base.connector_type == DRM_MODE_CONNECTOR_HDMIA)
+			ret = intel_hdmi_reset_link(encoder, &ctx);
+		else
+			ret = intel_dp_retrain_link(encoder, &ctx);
+
+		if (ret == -EDEADLK) {
+			drm_modeset_backoff(&ctx);
+			continue;
+		}
+
+		break;
+	}
+
+	drm_modeset_drop_locks(&ctx);
+	drm_modeset_acquire_fini(&ctx);
+	drm_WARN(encoder->base.dev, ret,
+		 "Acquiring modeset locks failed with %i\n", ret);
+
+	/*
+	 * Unpowered type-c dongles can take some time to boot and be
+	 * responsible, so here giving some time to those dongles to power up
+	 * and then retrying the probe.
+	 *
+	 * On many platforms the HDMI live state signal is known to be
+	 * unreliable, so we can't use it to detect if a sink is connected or
+	 * not. Instead we detect if it's connected based on whether we can
+	 * read the EDID or not. That in turn has a problem during disconnect,
+	 * since the HPD interrupt may be raised before the DDC lines get
+	 * disconnected (due to how the required length of DDC vs. HPD
+	 * connector pins are specified) and so we'll still be able to get a
+	 * valid EDID. To solve this schedule another detection cycle if this
+	 * time around we didn't detect any change in the sink's connection
+	 * status.
+	 *
+	 * Type-c connectors which get their HPD signal deasserted then
+	 * reasserted, without unplugging/replugging the sink from the
+	 * connector, introduce a delay until the AUX channel communication
+	 * becomes functional. Retry the detection for 5 seconds on type-c
+	 * connectors to account for this delay.
+	 */
+	if (state == INTEL_HOTPLUG_UNCHANGED &&
+	    connector->hotplug_retries < (is_tc ? 5 : 1) &&
+	    !dig_port->dp.is_mst)
+		state = INTEL_HOTPLUG_RETRY;
+
+	return state;
+}
+
+static bool lpt_digital_port_connected(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	u32 bit = dev_priv->display.hotplug.pch_hpd[encoder->hpd_pin];
+
+	return intel_de_read(dev_priv, SDEISR) & bit;
+}
+
+static bool hsw_digital_port_connected(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	u32 bit = dev_priv->display.hotplug.hpd[encoder->hpd_pin];
+
+	return intel_de_read(dev_priv, DEISR) & bit;
+}
+
+static bool bdw_digital_port_connected(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	u32 bit = dev_priv->display.hotplug.hpd[encoder->hpd_pin];
+
+	return intel_de_read(dev_priv, GEN8_DE_PORT_ISR) & bit;
+}
+
+static struct intel_connector *
+intel_ddi_init_hdmi_connector(struct intel_digital_port *dig_port)
+{
+	struct intel_connector *connector;
+	enum port port = dig_port->base.port;
+
+	connector = intel_connector_alloc();
+	if (!connector)
+		return NULL;
+
+	dig_port->hdmi.hdmi_reg = DDI_BUF_CTL(port);
+	intel_hdmi_init_connector(dig_port, connector);
+
+	return connector;
+}
+
+static bool intel_ddi_a_force_4_lanes(struct intel_digital_port *dig_port)
+{
+	struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
+
+	if (dig_port->base.port != PORT_A)
+		return false;
+
+	if (dig_port->saved_port_bits & DDI_A_4_LANES)
+		return false;
+
+	/* Broxton/Geminilake: Bspec says that DDI_A_4_LANES is the only
+	 *                     supported configuration
+	 */
+	if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
+		return true;
+
+	return false;
+}
+
+static int
+intel_ddi_max_lanes(struct intel_digital_port *dig_port)
+{
+	struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
+	enum port port = dig_port->base.port;
+	int max_lanes = 4;
+
+	if (DISPLAY_VER(dev_priv) >= 11)
+		return max_lanes;
+
+	if (port == PORT_A || port == PORT_E) {
+		if (intel_de_read(dev_priv, DDI_BUF_CTL(PORT_A)) & DDI_A_4_LANES)
+			max_lanes = port == PORT_A ? 4 : 0;
+		else
+			/* Both A and E share 2 lanes */
+			max_lanes = 2;
+	}
+
+	/*
+	 * Some BIOS might fail to set this bit on port A if eDP
+	 * wasn't lit up at boot.  Force this bit set when needed
+	 * so we use the proper lane count for our calculations.
+	 */
+	if (intel_ddi_a_force_4_lanes(dig_port)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Forcing DDI_A_4_LANES for port A\n");
+		dig_port->saved_port_bits |= DDI_A_4_LANES;
+		max_lanes = 4;
+	}
+
+	return max_lanes;
+}
+
+static bool hti_uses_phy(struct drm_i915_private *i915, enum phy phy)
+{
+	return i915->hti_state & HDPORT_ENABLED &&
+	       i915->hti_state & HDPORT_DDI_USED(phy);
+}
+
+static enum hpd_pin xelpd_hpd_pin(struct drm_i915_private *dev_priv,
+				  enum port port)
+{
+	if (port >= PORT_D_XELPD)
+		return HPD_PORT_D + port - PORT_D_XELPD;
+	else if (port >= PORT_TC1)
+		return HPD_PORT_TC1 + port - PORT_TC1;
+	else
+		return HPD_PORT_A + port - PORT_A;
+}
+
+static enum hpd_pin dg1_hpd_pin(struct drm_i915_private *dev_priv,
+				enum port port)
+{
+	if (port >= PORT_TC1)
+		return HPD_PORT_C + port - PORT_TC1;
+	else
+		return HPD_PORT_A + port - PORT_A;
+}
+
+static enum hpd_pin tgl_hpd_pin(struct drm_i915_private *dev_priv,
+				enum port port)
+{
+	if (port >= PORT_TC1)
+		return HPD_PORT_TC1 + port - PORT_TC1;
+	else
+		return HPD_PORT_A + port - PORT_A;
+}
+
+static enum hpd_pin rkl_hpd_pin(struct drm_i915_private *dev_priv,
+				enum port port)
+{
+	if (HAS_PCH_TGP(dev_priv))
+		return tgl_hpd_pin(dev_priv, port);
+
+	if (port >= PORT_TC1)
+		return HPD_PORT_C + port - PORT_TC1;
+	else
+		return HPD_PORT_A + port - PORT_A;
+}
+
+static enum hpd_pin icl_hpd_pin(struct drm_i915_private *dev_priv,
+				enum port port)
+{
+	if (port >= PORT_C)
+		return HPD_PORT_TC1 + port - PORT_C;
+	else
+		return HPD_PORT_A + port - PORT_A;
+}
+
+static enum hpd_pin ehl_hpd_pin(struct drm_i915_private *dev_priv,
+				enum port port)
+{
+	if (port == PORT_D)
+		return HPD_PORT_A;
+
+	if (HAS_PCH_TGP(dev_priv))
+		return icl_hpd_pin(dev_priv, port);
+
+	return HPD_PORT_A + port - PORT_A;
+}
+
+static enum hpd_pin skl_hpd_pin(struct drm_i915_private *dev_priv, enum port port)
+{
+	if (HAS_PCH_TGP(dev_priv))
+		return icl_hpd_pin(dev_priv, port);
+
+	return HPD_PORT_A + port - PORT_A;
+}
+
+static bool intel_ddi_is_tc(struct drm_i915_private *i915, enum port port)
+{
+	if (DISPLAY_VER(i915) >= 12)
+		return port >= PORT_TC1;
+	else if (DISPLAY_VER(i915) >= 11)
+		return port >= PORT_C;
+	else
+		return false;
+}
+
+static void intel_ddi_encoder_suspend(struct intel_encoder *encoder)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	enum phy phy = intel_port_to_phy(i915, encoder->port);
+
+	intel_dp_encoder_suspend(encoder);
+
+	if (!intel_phy_is_tc(i915, phy))
+		return;
+
+	intel_tc_port_flush_work(dig_port);
+}
+
+static void intel_ddi_encoder_shutdown(struct intel_encoder *encoder)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	enum phy phy = intel_port_to_phy(i915, encoder->port);
+
+	intel_dp_encoder_shutdown(encoder);
+	intel_hdmi_encoder_shutdown(encoder);
+
+	if (!intel_phy_is_tc(i915, phy))
+		return;
+
+	intel_tc_port_flush_work(dig_port);
+}
+
+#define port_tc_name(port) ((port) - PORT_TC1 + '1')
+#define tc_port_name(tc_port) ((tc_port) - TC_PORT_1 + '1')
+
+void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
+{
+	struct intel_digital_port *dig_port;
+	struct intel_encoder *encoder;
+	const struct intel_bios_encoder_data *devdata;
+	bool init_hdmi, init_dp;
+	enum phy phy = intel_port_to_phy(dev_priv, port);
+
+	/*
+	 * On platforms with HTI (aka HDPORT), if it's enabled at boot it may
+	 * have taken over some of the PHYs and made them unavailable to the
+	 * driver.  In that case we should skip initializing the corresponding
+	 * outputs.
+	 */
+	if (hti_uses_phy(dev_priv, phy)) {
+		drm_dbg_kms(&dev_priv->drm, "PORT %c / PHY %c reserved by HTI\n",
+			    port_name(port), phy_name(phy));
+		return;
+	}
+
+	devdata = intel_bios_encoder_data_lookup(dev_priv, port);
+	if (!devdata) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "VBT says port %c is not present\n",
+			    port_name(port));
+		return;
+	}
+
+	init_hdmi = intel_bios_encoder_supports_dvi(devdata) ||
+		intel_bios_encoder_supports_hdmi(devdata);
+	init_dp = intel_bios_encoder_supports_dp(devdata);
+
+	if (intel_bios_is_lspcon_present(dev_priv, port)) {
+		/*
+		 * Lspcon device needs to be driven with DP connector
+		 * with special detection sequence. So make sure DP
+		 * is initialized before lspcon.
+		 */
+		init_dp = true;
+		init_hdmi = false;
+		drm_dbg_kms(&dev_priv->drm, "VBT says port %c has lspcon\n",
+			    port_name(port));
+	}
+
+	if (!init_dp && !init_hdmi) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "VBT says port %c is not DVI/HDMI/DP compatible, respect it\n",
+			    port_name(port));
+		return;
+	}
+
+	if (intel_phy_is_snps(dev_priv, phy) &&
+	    dev_priv->snps_phy_failed_calibration & BIT(phy)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "SNPS PHY %c failed to calibrate, proceeding anyway\n",
+			    phy_name(phy));
+	}
+
+	dig_port = kzalloc(sizeof(*dig_port), GFP_KERNEL);
+	if (!dig_port)
+		return;
+
+	encoder = &dig_port->base;
+	encoder->devdata = devdata;
+
+	if (DISPLAY_VER(dev_priv) >= 13 && port >= PORT_D_XELPD) {
+		drm_encoder_init(&dev_priv->drm, &encoder->base, &intel_ddi_funcs,
+				 DRM_MODE_ENCODER_TMDS,
+				 "DDI %c/PHY %c",
+				 port_name(port - PORT_D_XELPD + PORT_D),
+				 phy_name(phy));
+	} else if (DISPLAY_VER(dev_priv) >= 12) {
+		enum tc_port tc_port = intel_port_to_tc(dev_priv, port);
+
+		drm_encoder_init(&dev_priv->drm, &encoder->base, &intel_ddi_funcs,
+				 DRM_MODE_ENCODER_TMDS,
+				 "DDI %s%c/PHY %s%c",
+				 port >= PORT_TC1 ? "TC" : "",
+				 port >= PORT_TC1 ? port_tc_name(port) : port_name(port),
+				 tc_port != TC_PORT_NONE ? "TC" : "",
+				 tc_port != TC_PORT_NONE ? tc_port_name(tc_port) : phy_name(phy));
+	} else if (DISPLAY_VER(dev_priv) >= 11) {
+		enum tc_port tc_port = intel_port_to_tc(dev_priv, port);
+
+		drm_encoder_init(&dev_priv->drm, &encoder->base, &intel_ddi_funcs,
+				 DRM_MODE_ENCODER_TMDS,
+				 "DDI %c%s/PHY %s%c",
+				 port_name(port),
+				 port >= PORT_C ? " (TC)" : "",
+				 tc_port != TC_PORT_NONE ? "TC" : "",
+				 tc_port != TC_PORT_NONE ? tc_port_name(tc_port) : phy_name(phy));
+	} else {
+		drm_encoder_init(&dev_priv->drm, &encoder->base, &intel_ddi_funcs,
+				 DRM_MODE_ENCODER_TMDS,
+				 "DDI %c/PHY %c", port_name(port),  phy_name(phy));
+	}
+
+	mutex_init(&dig_port->hdcp_mutex);
+	dig_port->num_hdcp_streams = 0;
+
+	encoder->hotplug = intel_ddi_hotplug;
+	encoder->compute_output_type = intel_ddi_compute_output_type;
+	encoder->compute_config = intel_ddi_compute_config;
+	encoder->compute_config_late = intel_ddi_compute_config_late;
+	encoder->enable = intel_enable_ddi;
+	encoder->pre_pll_enable = intel_ddi_pre_pll_enable;
+	encoder->pre_enable = intel_ddi_pre_enable;
+	encoder->disable = intel_disable_ddi;
+	encoder->post_disable = intel_ddi_post_disable;
+	encoder->update_pipe = intel_ddi_update_pipe;
+	encoder->get_hw_state = intel_ddi_get_hw_state;
+	encoder->sync_state = intel_ddi_sync_state;
+	encoder->initial_fastset_check = intel_ddi_initial_fastset_check;
+	encoder->suspend = intel_ddi_encoder_suspend;
+	encoder->shutdown = intel_ddi_encoder_shutdown;
+	encoder->get_power_domains = intel_ddi_get_power_domains;
+
+	encoder->type = INTEL_OUTPUT_DDI;
+	encoder->power_domain = intel_display_power_ddi_lanes_domain(dev_priv, port);
+	encoder->port = port;
+	encoder->cloneable = 0;
+	encoder->pipe_mask = ~0;
+
+	if (IS_DG2(dev_priv)) {
+		encoder->enable_clock = intel_mpllb_enable;
+		encoder->disable_clock = intel_mpllb_disable;
+		encoder->get_config = dg2_ddi_get_config;
+	} else if (IS_ALDERLAKE_S(dev_priv)) {
+		encoder->enable_clock = adls_ddi_enable_clock;
+		encoder->disable_clock = adls_ddi_disable_clock;
+		encoder->is_clock_enabled = adls_ddi_is_clock_enabled;
+		encoder->get_config = adls_ddi_get_config;
+	} else if (IS_ROCKETLAKE(dev_priv)) {
+		encoder->enable_clock = rkl_ddi_enable_clock;
+		encoder->disable_clock = rkl_ddi_disable_clock;
+		encoder->is_clock_enabled = rkl_ddi_is_clock_enabled;
+		encoder->get_config = rkl_ddi_get_config;
+	} else if (IS_DG1(dev_priv)) {
+		encoder->enable_clock = dg1_ddi_enable_clock;
+		encoder->disable_clock = dg1_ddi_disable_clock;
+		encoder->is_clock_enabled = dg1_ddi_is_clock_enabled;
+		encoder->get_config = dg1_ddi_get_config;
+	} else if (IS_JSL_EHL(dev_priv)) {
+		if (intel_ddi_is_tc(dev_priv, port)) {
+			encoder->enable_clock = jsl_ddi_tc_enable_clock;
+			encoder->disable_clock = jsl_ddi_tc_disable_clock;
+			encoder->is_clock_enabled = jsl_ddi_tc_is_clock_enabled;
+			encoder->get_config = icl_ddi_combo_get_config;
+		} else {
+			encoder->enable_clock = icl_ddi_combo_enable_clock;
+			encoder->disable_clock = icl_ddi_combo_disable_clock;
+			encoder->is_clock_enabled = icl_ddi_combo_is_clock_enabled;
+			encoder->get_config = icl_ddi_combo_get_config;
+		}
+	} else if (DISPLAY_VER(dev_priv) >= 11) {
+		if (intel_ddi_is_tc(dev_priv, port)) {
+			encoder->enable_clock = icl_ddi_tc_enable_clock;
+			encoder->disable_clock = icl_ddi_tc_disable_clock;
+			encoder->is_clock_enabled = icl_ddi_tc_is_clock_enabled;
+			encoder->get_config = icl_ddi_tc_get_config;
+		} else {
+			encoder->enable_clock = icl_ddi_combo_enable_clock;
+			encoder->disable_clock = icl_ddi_combo_disable_clock;
+			encoder->is_clock_enabled = icl_ddi_combo_is_clock_enabled;
+			encoder->get_config = icl_ddi_combo_get_config;
+		}
+	} else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) {
+		/* BXT/GLK have fixed PLL->port mapping */
+		encoder->get_config = bxt_ddi_get_config;
+	} else if (DISPLAY_VER(dev_priv) == 9) {
+		encoder->enable_clock = skl_ddi_enable_clock;
+		encoder->disable_clock = skl_ddi_disable_clock;
+		encoder->is_clock_enabled = skl_ddi_is_clock_enabled;
+		encoder->get_config = skl_ddi_get_config;
+	} else if (IS_BROADWELL(dev_priv) || IS_HASWELL(dev_priv)) {
+		encoder->enable_clock = hsw_ddi_enable_clock;
+		encoder->disable_clock = hsw_ddi_disable_clock;
+		encoder->is_clock_enabled = hsw_ddi_is_clock_enabled;
+		encoder->get_config = hsw_ddi_get_config;
+	}
+
+	if (IS_DG2(dev_priv)) {
+		encoder->set_signal_levels = intel_snps_phy_set_signal_levels;
+	} else if (DISPLAY_VER(dev_priv) >= 12) {
+		if (intel_phy_is_combo(dev_priv, phy))
+			encoder->set_signal_levels = icl_combo_phy_set_signal_levels;
+		else
+			encoder->set_signal_levels = tgl_dkl_phy_set_signal_levels;
+	} else if (DISPLAY_VER(dev_priv) >= 11) {
+		if (intel_phy_is_combo(dev_priv, phy))
+			encoder->set_signal_levels = icl_combo_phy_set_signal_levels;
+		else
+			encoder->set_signal_levels = icl_mg_phy_set_signal_levels;
+	} else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) {
+		encoder->set_signal_levels = bxt_ddi_phy_set_signal_levels;
+	} else {
+		encoder->set_signal_levels = hsw_set_signal_levels;
+	}
+
+	intel_ddi_buf_trans_init(encoder);
+
+	if (DISPLAY_VER(dev_priv) >= 13)
+		encoder->hpd_pin = xelpd_hpd_pin(dev_priv, port);
+	else if (IS_DG1(dev_priv))
+		encoder->hpd_pin = dg1_hpd_pin(dev_priv, port);
+	else if (IS_ROCKETLAKE(dev_priv))
+		encoder->hpd_pin = rkl_hpd_pin(dev_priv, port);
+	else if (DISPLAY_VER(dev_priv) >= 12)
+		encoder->hpd_pin = tgl_hpd_pin(dev_priv, port);
+	else if (IS_JSL_EHL(dev_priv))
+		encoder->hpd_pin = ehl_hpd_pin(dev_priv, port);
+	else if (DISPLAY_VER(dev_priv) == 11)
+		encoder->hpd_pin = icl_hpd_pin(dev_priv, port);
+	else if (DISPLAY_VER(dev_priv) == 9 && !IS_BROXTON(dev_priv))
+		encoder->hpd_pin = skl_hpd_pin(dev_priv, port);
+	else
+		encoder->hpd_pin = intel_hpd_pin_default(dev_priv, port);
+
+	if (DISPLAY_VER(dev_priv) >= 11)
+		dig_port->saved_port_bits =
+			intel_de_read(dev_priv, DDI_BUF_CTL(port))
+			& DDI_BUF_PORT_REVERSAL;
+	else
+		dig_port->saved_port_bits =
+			intel_de_read(dev_priv, DDI_BUF_CTL(port))
+			& (DDI_BUF_PORT_REVERSAL | DDI_A_4_LANES);
+
+	if (intel_bios_is_lane_reversal_needed(dev_priv, port))
+		dig_port->saved_port_bits |= DDI_BUF_PORT_REVERSAL;
+
+	dig_port->dp.output_reg = INVALID_MMIO_REG;
+	dig_port->max_lanes = intel_ddi_max_lanes(dig_port);
+	dig_port->aux_ch = intel_bios_port_aux_ch(dev_priv, port);
+
+	if (intel_phy_is_tc(dev_priv, phy)) {
+		bool is_legacy =
+			!intel_bios_encoder_supports_typec_usb(devdata) &&
+			!intel_bios_encoder_supports_tbt(devdata);
+
+		intel_tc_port_init(dig_port, is_legacy);
+
+		encoder->update_prepare = intel_ddi_update_prepare;
+		encoder->update_complete = intel_ddi_update_complete;
+	}
+
+	drm_WARN_ON(&dev_priv->drm, port > PORT_I);
+	dig_port->ddi_io_power_domain = intel_display_power_ddi_io_domain(dev_priv, port);
+
+	if (init_dp) {
+		if (!intel_ddi_init_dp_connector(dig_port))
+			goto err;
+
+		dig_port->hpd_pulse = intel_dp_hpd_pulse;
+
+		if (dig_port->dp.mso_link_count)
+			encoder->pipe_mask = intel_ddi_splitter_pipe_mask(dev_priv);
+	}
+
+	/* In theory we don't need the encoder->type check, but leave it just in
+	 * case we have some really bad VBTs... */
+	if (encoder->type != INTEL_OUTPUT_EDP && init_hdmi) {
+		if (!intel_ddi_init_hdmi_connector(dig_port))
+			goto err;
+	}
+
+	if (DISPLAY_VER(dev_priv) >= 11) {
+		if (intel_phy_is_tc(dev_priv, phy))
+			dig_port->connected = intel_tc_port_connected;
+		else
+			dig_port->connected = lpt_digital_port_connected;
+	} else if (DISPLAY_VER(dev_priv) >= 8) {
+		if (port == PORT_A || IS_GEMINILAKE(dev_priv) ||
+		    IS_BROXTON(dev_priv))
+			dig_port->connected = bdw_digital_port_connected;
+		else
+			dig_port->connected = lpt_digital_port_connected;
+	} else {
+		if (port == PORT_A)
+			dig_port->connected = hsw_digital_port_connected;
+		else
+			dig_port->connected = lpt_digital_port_connected;
+	}
+
+	intel_infoframe_init(dig_port);
+
+	return;
+
+err:
+	drm_encoder_cleanup(&encoder->base);
+	kfree(dig_port);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.h b/drivers/gpu/drm/i915/display/intel_ddi.h
new file mode 100644
index 000000000..d39076fac
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_ddi.h
@@ -0,0 +1,73 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_DDI_H__
+#define __INTEL_DDI_H__
+
+#include "i915_reg_defs.h"
+
+struct drm_connector_state;
+struct drm_i915_private;
+struct intel_atomic_state;
+struct intel_connector;
+struct intel_crtc;
+struct intel_crtc_state;
+struct intel_dp;
+struct intel_dpll_hw_state;
+struct intel_encoder;
+struct intel_shared_dpll;
+enum pipe;
+enum port;
+enum transcoder;
+
+i915_reg_t dp_tp_ctl_reg(struct intel_encoder *encoder,
+			 const struct intel_crtc_state *crtc_state);
+i915_reg_t dp_tp_status_reg(struct intel_encoder *encoder,
+			    const struct intel_crtc_state *crtc_state);
+void intel_ddi_fdi_post_disable(struct intel_atomic_state *state,
+				struct intel_encoder *intel_encoder,
+				const struct intel_crtc_state *old_crtc_state,
+				const struct drm_connector_state *old_conn_state);
+void intel_ddi_enable_clock(struct intel_encoder *encoder,
+			    const struct intel_crtc_state *crtc_state);
+void intel_ddi_disable_clock(struct intel_encoder *encoder);
+void intel_ddi_get_clock(struct intel_encoder *encoder,
+			 struct intel_crtc_state *crtc_state,
+			 struct intel_shared_dpll *pll);
+void hsw_ddi_enable_clock(struct intel_encoder *encoder,
+			  const struct intel_crtc_state *crtc_state);
+void hsw_ddi_disable_clock(struct intel_encoder *encoder);
+bool hsw_ddi_is_clock_enabled(struct intel_encoder *encoder);
+void hsw_ddi_get_config(struct intel_encoder *encoder,
+			struct intel_crtc_state *crtc_state);
+struct intel_shared_dpll *icl_ddi_combo_get_pll(struct intel_encoder *encoder);
+void hsw_prepare_dp_ddi_buffers(struct intel_encoder *encoder,
+				const struct intel_crtc_state *crtc_state);
+void intel_wait_ddi_buf_idle(struct drm_i915_private *dev_priv,
+			     enum port port);
+void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port);
+bool intel_ddi_get_hw_state(struct intel_encoder *encoder, enum pipe *pipe);
+void intel_ddi_enable_transcoder_func(struct intel_encoder *encoder,
+				      const struct intel_crtc_state *crtc_state);
+void intel_ddi_disable_transcoder_func(const struct intel_crtc_state *crtc_state);
+void intel_ddi_enable_pipe_clock(struct intel_encoder *encoder,
+				 const struct intel_crtc_state *crtc_state);
+void intel_ddi_disable_pipe_clock(const  struct intel_crtc_state *crtc_state);
+void intel_ddi_set_dp_msa(const struct intel_crtc_state *crtc_state,
+			  const struct drm_connector_state *conn_state);
+bool intel_ddi_connector_get_hw_state(struct intel_connector *intel_connector);
+void intel_ddi_set_vc_payload_alloc(const struct intel_crtc_state *crtc_state,
+				    bool state);
+void intel_ddi_compute_min_voltage_level(struct drm_i915_private *dev_priv,
+					 struct intel_crtc_state *crtc_state);
+int intel_ddi_toggle_hdcp_bits(struct intel_encoder *intel_encoder,
+			       enum transcoder cpu_transcoder,
+			       bool enable, u32 hdcp_mask);
+void intel_ddi_sanitize_encoder_pll_mapping(struct intel_encoder *encoder);
+int intel_ddi_level(struct intel_encoder *encoder,
+		    const struct intel_crtc_state *crtc_state,
+		    int lane);
+
+#endif /* __INTEL_DDI_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c b/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c
new file mode 100644
index 000000000..006a2e979
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c
@@ -0,0 +1,1662 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#include "i915_drv.h"
+#include "intel_ddi.h"
+#include "intel_ddi_buf_trans.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_dp.h"
+
+/* HDMI/DVI modes ignore everything but the last 2 items. So we share
+ * them for both DP and FDI transports, allowing those ports to
+ * automatically adapt to HDMI connections as well
+ */
+static const union intel_ddi_buf_trans_entry _hsw_trans_dp[] = {
+	{ .hsw = { 0x00FFFFFF, 0x0006000E, 0x0 } },
+	{ .hsw = { 0x00D75FFF, 0x0005000A, 0x0 } },
+	{ .hsw = { 0x00C30FFF, 0x00040006, 0x0 } },
+	{ .hsw = { 0x80AAAFFF, 0x000B0000, 0x0 } },
+	{ .hsw = { 0x00FFFFFF, 0x0005000A, 0x0 } },
+	{ .hsw = { 0x00D75FFF, 0x000C0004, 0x0 } },
+	{ .hsw = { 0x80C30FFF, 0x000B0000, 0x0 } },
+	{ .hsw = { 0x00FFFFFF, 0x00040006, 0x0 } },
+	{ .hsw = { 0x80D75FFF, 0x000B0000, 0x0 } },
+};
+
+static const struct intel_ddi_buf_trans hsw_trans_dp = {
+	.entries = _hsw_trans_dp,
+	.num_entries = ARRAY_SIZE(_hsw_trans_dp),
+};
+
+static const union intel_ddi_buf_trans_entry _hsw_trans_fdi[] = {
+	{ .hsw = { 0x00FFFFFF, 0x0007000E, 0x0 } },
+	{ .hsw = { 0x00D75FFF, 0x000F000A, 0x0 } },
+	{ .hsw = { 0x00C30FFF, 0x00060006, 0x0 } },
+	{ .hsw = { 0x00AAAFFF, 0x001E0000, 0x0 } },
+	{ .hsw = { 0x00FFFFFF, 0x000F000A, 0x0 } },
+	{ .hsw = { 0x00D75FFF, 0x00160004, 0x0 } },
+	{ .hsw = { 0x00C30FFF, 0x001E0000, 0x0 } },
+	{ .hsw = { 0x00FFFFFF, 0x00060006, 0x0 } },
+	{ .hsw = { 0x00D75FFF, 0x001E0000, 0x0 } },
+};
+
+static const struct intel_ddi_buf_trans hsw_trans_fdi = {
+	.entries = _hsw_trans_fdi,
+	.num_entries = ARRAY_SIZE(_hsw_trans_fdi),
+};
+
+static const union intel_ddi_buf_trans_entry _hsw_trans_hdmi[] = {
+							/* Idx	NT mV d	T mV d	db	*/
+	{ .hsw = { 0x00FFFFFF, 0x0006000E, 0x0 } },	/* 0:	400	400	0	*/
+	{ .hsw = { 0x00E79FFF, 0x000E000C, 0x0 } },	/* 1:	400	500	2	*/
+	{ .hsw = { 0x00D75FFF, 0x0005000A, 0x0 } },	/* 2:	400	600	3.5	*/
+	{ .hsw = { 0x00FFFFFF, 0x0005000A, 0x0 } },	/* 3:	600	600	0	*/
+	{ .hsw = { 0x00E79FFF, 0x001D0007, 0x0 } },	/* 4:	600	750	2	*/
+	{ .hsw = { 0x00D75FFF, 0x000C0004, 0x0 } },	/* 5:	600	900	3.5	*/
+	{ .hsw = { 0x00FFFFFF, 0x00040006, 0x0 } },	/* 6:	800	800	0	*/
+	{ .hsw = { 0x80E79FFF, 0x00030002, 0x0 } },	/* 7:	800	1000	2	*/
+	{ .hsw = { 0x00FFFFFF, 0x00140005, 0x0 } },	/* 8:	850	850	0	*/
+	{ .hsw = { 0x00FFFFFF, 0x000C0004, 0x0 } },	/* 9:	900	900	0	*/
+	{ .hsw = { 0x00FFFFFF, 0x001C0003, 0x0 } },	/* 10:	950	950	0	*/
+	{ .hsw = { 0x80FFFFFF, 0x00030002, 0x0 } },	/* 11:	1000	1000	0	*/
+};
+
+static const struct intel_ddi_buf_trans hsw_trans_hdmi = {
+	.entries = _hsw_trans_hdmi,
+	.num_entries = ARRAY_SIZE(_hsw_trans_hdmi),
+	.hdmi_default_entry = 6,
+};
+
+static const union intel_ddi_buf_trans_entry _bdw_trans_edp[] = {
+	{ .hsw = { 0x00FFFFFF, 0x00000012, 0x0 } },
+	{ .hsw = { 0x00EBAFFF, 0x00020011, 0x0 } },
+	{ .hsw = { 0x00C71FFF, 0x0006000F, 0x0 } },
+	{ .hsw = { 0x00AAAFFF, 0x000E000A, 0x0 } },
+	{ .hsw = { 0x00FFFFFF, 0x00020011, 0x0 } },
+	{ .hsw = { 0x00DB6FFF, 0x0005000F, 0x0 } },
+	{ .hsw = { 0x00BEEFFF, 0x000A000C, 0x0 } },
+	{ .hsw = { 0x00FFFFFF, 0x0005000F, 0x0 } },
+	{ .hsw = { 0x00DB6FFF, 0x000A000C, 0x0 } },
+};
+
+static const struct intel_ddi_buf_trans bdw_trans_edp = {
+	.entries = _bdw_trans_edp,
+	.num_entries = ARRAY_SIZE(_bdw_trans_edp),
+};
+
+static const union intel_ddi_buf_trans_entry _bdw_trans_dp[] = {
+	{ .hsw = { 0x00FFFFFF, 0x0007000E, 0x0 } },
+	{ .hsw = { 0x00D75FFF, 0x000E000A, 0x0 } },
+	{ .hsw = { 0x00BEFFFF, 0x00140006, 0x0 } },
+	{ .hsw = { 0x80B2CFFF, 0x001B0002, 0x0 } },
+	{ .hsw = { 0x00FFFFFF, 0x000E000A, 0x0 } },
+	{ .hsw = { 0x00DB6FFF, 0x00160005, 0x0 } },
+	{ .hsw = { 0x80C71FFF, 0x001A0002, 0x0 } },
+	{ .hsw = { 0x00F7DFFF, 0x00180004, 0x0 } },
+	{ .hsw = { 0x80D75FFF, 0x001B0002, 0x0 } },
+};
+
+static const struct intel_ddi_buf_trans bdw_trans_dp = {
+	.entries = _bdw_trans_dp,
+	.num_entries = ARRAY_SIZE(_bdw_trans_dp),
+};
+
+static const union intel_ddi_buf_trans_entry _bdw_trans_fdi[] = {
+	{ .hsw = { 0x00FFFFFF, 0x0001000E, 0x0 } },
+	{ .hsw = { 0x00D75FFF, 0x0004000A, 0x0 } },
+	{ .hsw = { 0x00C30FFF, 0x00070006, 0x0 } },
+	{ .hsw = { 0x00AAAFFF, 0x000C0000, 0x0 } },
+	{ .hsw = { 0x00FFFFFF, 0x0004000A, 0x0 } },
+	{ .hsw = { 0x00D75FFF, 0x00090004, 0x0 } },
+	{ .hsw = { 0x00C30FFF, 0x000C0000, 0x0 } },
+	{ .hsw = { 0x00FFFFFF, 0x00070006, 0x0 } },
+	{ .hsw = { 0x00D75FFF, 0x000C0000, 0x0 } },
+};
+
+static const struct intel_ddi_buf_trans bdw_trans_fdi = {
+	.entries = _bdw_trans_fdi,
+	.num_entries = ARRAY_SIZE(_bdw_trans_fdi),
+};
+
+static const union intel_ddi_buf_trans_entry _bdw_trans_hdmi[] = {
+							/* Idx	NT mV d	T mV df	db	*/
+	{ .hsw = { 0x00FFFFFF, 0x0007000E, 0x0 } },	/* 0:	400	400	0	*/
+	{ .hsw = { 0x00D75FFF, 0x000E000A, 0x0 } },	/* 1:	400	600	3.5	*/
+	{ .hsw = { 0x00BEFFFF, 0x00140006, 0x0 } },	/* 2:	400	800	6	*/
+	{ .hsw = { 0x00FFFFFF, 0x0009000D, 0x0 } },	/* 3:	450	450	0	*/
+	{ .hsw = { 0x00FFFFFF, 0x000E000A, 0x0 } },	/* 4:	600	600	0	*/
+	{ .hsw = { 0x00D7FFFF, 0x00140006, 0x0 } },	/* 5:	600	800	2.5	*/
+	{ .hsw = { 0x80CB2FFF, 0x001B0002, 0x0 } },	/* 6:	600	1000	4.5	*/
+	{ .hsw = { 0x00FFFFFF, 0x00140006, 0x0 } },	/* 7:	800	800	0	*/
+	{ .hsw = { 0x80E79FFF, 0x001B0002, 0x0 } },	/* 8:	800	1000	2	*/
+	{ .hsw = { 0x80FFFFFF, 0x001B0002, 0x0 } },	/* 9:	1000	1000	0	*/
+};
+
+static const struct intel_ddi_buf_trans bdw_trans_hdmi = {
+	.entries = _bdw_trans_hdmi,
+	.num_entries = ARRAY_SIZE(_bdw_trans_hdmi),
+	.hdmi_default_entry = 7,
+};
+
+/* Skylake H and S */
+static const union intel_ddi_buf_trans_entry _skl_trans_dp[] = {
+	{ .hsw = { 0x00002016, 0x000000A0, 0x0 } },
+	{ .hsw = { 0x00005012, 0x0000009B, 0x0 } },
+	{ .hsw = { 0x00007011, 0x00000088, 0x0 } },
+	{ .hsw = { 0x80009010, 0x000000C0, 0x1 } },
+	{ .hsw = { 0x00002016, 0x0000009B, 0x0 } },
+	{ .hsw = { 0x00005012, 0x00000088, 0x0 } },
+	{ .hsw = { 0x80007011, 0x000000C0, 0x1 } },
+	{ .hsw = { 0x00002016, 0x000000DF, 0x0 } },
+	{ .hsw = { 0x80005012, 0x000000C0, 0x1 } },
+};
+
+static const struct intel_ddi_buf_trans skl_trans_dp = {
+	.entries = _skl_trans_dp,
+	.num_entries = ARRAY_SIZE(_skl_trans_dp),
+};
+
+/* Skylake U */
+static const union intel_ddi_buf_trans_entry _skl_u_trans_dp[] = {
+	{ .hsw = { 0x0000201B, 0x000000A2, 0x0 } },
+	{ .hsw = { 0x00005012, 0x00000088, 0x0 } },
+	{ .hsw = { 0x80007011, 0x000000CD, 0x1 } },
+	{ .hsw = { 0x80009010, 0x000000C0, 0x1 } },
+	{ .hsw = { 0x0000201B, 0x0000009D, 0x0 } },
+	{ .hsw = { 0x80005012, 0x000000C0, 0x1 } },
+	{ .hsw = { 0x80007011, 0x000000C0, 0x1 } },
+	{ .hsw = { 0x00002016, 0x00000088, 0x0 } },
+	{ .hsw = { 0x80005012, 0x000000C0, 0x1 } },
+};
+
+static const struct intel_ddi_buf_trans skl_u_trans_dp = {
+	.entries = _skl_u_trans_dp,
+	.num_entries = ARRAY_SIZE(_skl_u_trans_dp),
+};
+
+/* Skylake Y */
+static const union intel_ddi_buf_trans_entry _skl_y_trans_dp[] = {
+	{ .hsw = { 0x00000018, 0x000000A2, 0x0 } },
+	{ .hsw = { 0x00005012, 0x00000088, 0x0 } },
+	{ .hsw = { 0x80007011, 0x000000CD, 0x3 } },
+	{ .hsw = { 0x80009010, 0x000000C0, 0x3 } },
+	{ .hsw = { 0x00000018, 0x0000009D, 0x0 } },
+	{ .hsw = { 0x80005012, 0x000000C0, 0x3 } },
+	{ .hsw = { 0x80007011, 0x000000C0, 0x3 } },
+	{ .hsw = { 0x00000018, 0x00000088, 0x0 } },
+	{ .hsw = { 0x80005012, 0x000000C0, 0x3 } },
+};
+
+static const struct intel_ddi_buf_trans skl_y_trans_dp = {
+	.entries = _skl_y_trans_dp,
+	.num_entries = ARRAY_SIZE(_skl_y_trans_dp),
+};
+
+/* Kabylake H and S */
+static const union intel_ddi_buf_trans_entry _kbl_trans_dp[] = {
+	{ .hsw = { 0x00002016, 0x000000A0, 0x0 } },
+	{ .hsw = { 0x00005012, 0x0000009B, 0x0 } },
+	{ .hsw = { 0x00007011, 0x00000088, 0x0 } },
+	{ .hsw = { 0x80009010, 0x000000C0, 0x1 } },
+	{ .hsw = { 0x00002016, 0x0000009B, 0x0 } },
+	{ .hsw = { 0x00005012, 0x00000088, 0x0 } },
+	{ .hsw = { 0x80007011, 0x000000C0, 0x1 } },
+	{ .hsw = { 0x00002016, 0x00000097, 0x0 } },
+	{ .hsw = { 0x80005012, 0x000000C0, 0x1 } },
+};
+
+static const struct intel_ddi_buf_trans kbl_trans_dp = {
+	.entries = _kbl_trans_dp,
+	.num_entries = ARRAY_SIZE(_kbl_trans_dp),
+};
+
+/* Kabylake U */
+static const union intel_ddi_buf_trans_entry _kbl_u_trans_dp[] = {
+	{ .hsw = { 0x0000201B, 0x000000A1, 0x0 } },
+	{ .hsw = { 0x00005012, 0x00000088, 0x0 } },
+	{ .hsw = { 0x80007011, 0x000000CD, 0x3 } },
+	{ .hsw = { 0x80009010, 0x000000C0, 0x3 } },
+	{ .hsw = { 0x0000201B, 0x0000009D, 0x0 } },
+	{ .hsw = { 0x80005012, 0x000000C0, 0x3 } },
+	{ .hsw = { 0x80007011, 0x000000C0, 0x3 } },
+	{ .hsw = { 0x00002016, 0x0000004F, 0x0 } },
+	{ .hsw = { 0x80005012, 0x000000C0, 0x3 } },
+};
+
+static const struct intel_ddi_buf_trans kbl_u_trans_dp = {
+	.entries = _kbl_u_trans_dp,
+	.num_entries = ARRAY_SIZE(_kbl_u_trans_dp),
+};
+
+/* Kabylake Y */
+static const union intel_ddi_buf_trans_entry _kbl_y_trans_dp[] = {
+	{ .hsw = { 0x00001017, 0x000000A1, 0x0 } },
+	{ .hsw = { 0x00005012, 0x00000088, 0x0 } },
+	{ .hsw = { 0x80007011, 0x000000CD, 0x3 } },
+	{ .hsw = { 0x8000800F, 0x000000C0, 0x3 } },
+	{ .hsw = { 0x00001017, 0x0000009D, 0x0 } },
+	{ .hsw = { 0x80005012, 0x000000C0, 0x3 } },
+	{ .hsw = { 0x80007011, 0x000000C0, 0x3 } },
+	{ .hsw = { 0x00001017, 0x0000004C, 0x0 } },
+	{ .hsw = { 0x80005012, 0x000000C0, 0x3 } },
+};
+
+static const struct intel_ddi_buf_trans kbl_y_trans_dp = {
+	.entries = _kbl_y_trans_dp,
+	.num_entries = ARRAY_SIZE(_kbl_y_trans_dp),
+};
+
+/*
+ * Skylake/Kabylake H and S
+ * eDP 1.4 low vswing translation parameters
+ */
+static const union intel_ddi_buf_trans_entry _skl_trans_edp[] = {
+	{ .hsw = { 0x00000018, 0x000000A8, 0x0 } },
+	{ .hsw = { 0x00004013, 0x000000A9, 0x0 } },
+	{ .hsw = { 0x00007011, 0x000000A2, 0x0 } },
+	{ .hsw = { 0x00009010, 0x0000009C, 0x0 } },
+	{ .hsw = { 0x00000018, 0x000000A9, 0x0 } },
+	{ .hsw = { 0x00006013, 0x000000A2, 0x0 } },
+	{ .hsw = { 0x00007011, 0x000000A6, 0x0 } },
+	{ .hsw = { 0x00000018, 0x000000AB, 0x0 } },
+	{ .hsw = { 0x00007013, 0x0000009F, 0x0 } },
+	{ .hsw = { 0x00000018, 0x000000DF, 0x0 } },
+};
+
+static const struct intel_ddi_buf_trans skl_trans_edp = {
+	.entries = _skl_trans_edp,
+	.num_entries = ARRAY_SIZE(_skl_trans_edp),
+};
+
+/*
+ * Skylake/Kabylake U
+ * eDP 1.4 low vswing translation parameters
+ */
+static const union intel_ddi_buf_trans_entry _skl_u_trans_edp[] = {
+	{ .hsw = { 0x00000018, 0x000000A8, 0x0 } },
+	{ .hsw = { 0x00004013, 0x000000A9, 0x0 } },
+	{ .hsw = { 0x00007011, 0x000000A2, 0x0 } },
+	{ .hsw = { 0x00009010, 0x0000009C, 0x0 } },
+	{ .hsw = { 0x00000018, 0x000000A9, 0x0 } },
+	{ .hsw = { 0x00006013, 0x000000A2, 0x0 } },
+	{ .hsw = { 0x00007011, 0x000000A6, 0x0 } },
+	{ .hsw = { 0x00002016, 0x000000AB, 0x0 } },
+	{ .hsw = { 0x00005013, 0x0000009F, 0x0 } },
+	{ .hsw = { 0x00000018, 0x000000DF, 0x0 } },
+};
+
+static const struct intel_ddi_buf_trans skl_u_trans_edp = {
+	.entries = _skl_u_trans_edp,
+	.num_entries = ARRAY_SIZE(_skl_u_trans_edp),
+};
+
+/*
+ * Skylake/Kabylake Y
+ * eDP 1.4 low vswing translation parameters
+ */
+static const union intel_ddi_buf_trans_entry _skl_y_trans_edp[] = {
+	{ .hsw = { 0x00000018, 0x000000A8, 0x0 } },
+	{ .hsw = { 0x00004013, 0x000000AB, 0x0 } },
+	{ .hsw = { 0x00007011, 0x000000A4, 0x0 } },
+	{ .hsw = { 0x00009010, 0x000000DF, 0x0 } },
+	{ .hsw = { 0x00000018, 0x000000AA, 0x0 } },
+	{ .hsw = { 0x00006013, 0x000000A4, 0x0 } },
+	{ .hsw = { 0x00007011, 0x0000009D, 0x0 } },
+	{ .hsw = { 0x00000018, 0x000000A0, 0x0 } },
+	{ .hsw = { 0x00006012, 0x000000DF, 0x0 } },
+	{ .hsw = { 0x00000018, 0x0000008A, 0x0 } },
+};
+
+static const struct intel_ddi_buf_trans skl_y_trans_edp = {
+	.entries = _skl_y_trans_edp,
+	.num_entries = ARRAY_SIZE(_skl_y_trans_edp),
+};
+
+/* Skylake/Kabylake U, H and S */
+static const union intel_ddi_buf_trans_entry _skl_trans_hdmi[] = {
+	{ .hsw = { 0x00000018, 0x000000AC, 0x0 } },
+	{ .hsw = { 0x00005012, 0x0000009D, 0x0 } },
+	{ .hsw = { 0x00007011, 0x00000088, 0x0 } },
+	{ .hsw = { 0x00000018, 0x000000A1, 0x0 } },
+	{ .hsw = { 0x00000018, 0x00000098, 0x0 } },
+	{ .hsw = { 0x00004013, 0x00000088, 0x0 } },
+	{ .hsw = { 0x80006012, 0x000000CD, 0x1 } },
+	{ .hsw = { 0x00000018, 0x000000DF, 0x0 } },
+	{ .hsw = { 0x80003015, 0x000000CD, 0x1 } },	/* Default */
+	{ .hsw = { 0x80003015, 0x000000C0, 0x1 } },
+	{ .hsw = { 0x80000018, 0x000000C0, 0x1 } },
+};
+
+static const struct intel_ddi_buf_trans skl_trans_hdmi = {
+	.entries = _skl_trans_hdmi,
+	.num_entries = ARRAY_SIZE(_skl_trans_hdmi),
+	.hdmi_default_entry = 8,
+};
+
+/* Skylake/Kabylake Y */
+static const union intel_ddi_buf_trans_entry _skl_y_trans_hdmi[] = {
+	{ .hsw = { 0x00000018, 0x000000A1, 0x0 } },
+	{ .hsw = { 0x00005012, 0x000000DF, 0x0 } },
+	{ .hsw = { 0x80007011, 0x000000CB, 0x3 } },
+	{ .hsw = { 0x00000018, 0x000000A4, 0x0 } },
+	{ .hsw = { 0x00000018, 0x0000009D, 0x0 } },
+	{ .hsw = { 0x00004013, 0x00000080, 0x0 } },
+	{ .hsw = { 0x80006013, 0x000000C0, 0x3 } },
+	{ .hsw = { 0x00000018, 0x0000008A, 0x0 } },
+	{ .hsw = { 0x80003015, 0x000000C0, 0x3 } },	/* Default */
+	{ .hsw = { 0x80003015, 0x000000C0, 0x3 } },
+	{ .hsw = { 0x80000018, 0x000000C0, 0x3 } },
+};
+
+static const struct intel_ddi_buf_trans skl_y_trans_hdmi = {
+	.entries = _skl_y_trans_hdmi,
+	.num_entries = ARRAY_SIZE(_skl_y_trans_hdmi),
+	.hdmi_default_entry = 8,
+};
+
+static const union intel_ddi_buf_trans_entry _bxt_trans_dp[] = {
+						/* Idx	NT mV diff	db  */
+	{ .bxt = { 52,  0x9A, 0, 128, } },	/* 0:	400		0   */
+	{ .bxt = { 78,  0x9A, 0, 85,  } },	/* 1:	400		3.5 */
+	{ .bxt = { 104, 0x9A, 0, 64,  } },	/* 2:	400		6   */
+	{ .bxt = { 154, 0x9A, 0, 43,  } },	/* 3:	400		9.5 */
+	{ .bxt = { 77,  0x9A, 0, 128, } },	/* 4:	600		0   */
+	{ .bxt = { 116, 0x9A, 0, 85,  } },	/* 5:	600		3.5 */
+	{ .bxt = { 154, 0x9A, 0, 64,  } },	/* 6:	600		6   */
+	{ .bxt = { 102, 0x9A, 0, 128, } },	/* 7:	800		0   */
+	{ .bxt = { 154, 0x9A, 0, 85,  } },	/* 8:	800		3.5 */
+	{ .bxt = { 154, 0x9A, 1, 128, } },	/* 9:	1200		0   */
+};
+
+static const struct intel_ddi_buf_trans bxt_trans_dp = {
+	.entries = _bxt_trans_dp,
+	.num_entries = ARRAY_SIZE(_bxt_trans_dp),
+};
+
+static const union intel_ddi_buf_trans_entry _bxt_trans_edp[] = {
+					/* Idx	NT mV diff	db  */
+	{ .bxt = { 26, 0, 0, 128, } },	/* 0:	200		0   */
+	{ .bxt = { 38, 0, 0, 112, } },	/* 1:	200		1.5 */
+	{ .bxt = { 48, 0, 0, 96,  } },	/* 2:	200		4   */
+	{ .bxt = { 54, 0, 0, 69,  } },	/* 3:	200		6   */
+	{ .bxt = { 32, 0, 0, 128, } },	/* 4:	250		0   */
+	{ .bxt = { 48, 0, 0, 104, } },	/* 5:	250		1.5 */
+	{ .bxt = { 54, 0, 0, 85,  } },	/* 6:	250		4   */
+	{ .bxt = { 43, 0, 0, 128, } },	/* 7:	300		0   */
+	{ .bxt = { 54, 0, 0, 101, } },	/* 8:	300		1.5 */
+	{ .bxt = { 48, 0, 0, 128, } },	/* 9:	300		0   */
+};
+
+static const struct intel_ddi_buf_trans bxt_trans_edp = {
+	.entries = _bxt_trans_edp,
+	.num_entries = ARRAY_SIZE(_bxt_trans_edp),
+};
+
+/* BSpec has 2 recommended values - entries 0 and 8.
+ * Using the entry with higher vswing.
+ */
+static const union intel_ddi_buf_trans_entry _bxt_trans_hdmi[] = {
+						/* Idx	NT mV diff	db  */
+	{ .bxt = { 52,  0x9A, 0, 128, } },	/* 0:	400		0   */
+	{ .bxt = { 52,  0x9A, 0, 85,  } },	/* 1:	400		3.5 */
+	{ .bxt = { 52,  0x9A, 0, 64,  } },	/* 2:	400		6   */
+	{ .bxt = { 42,  0x9A, 0, 43,  } },	/* 3:	400		9.5 */
+	{ .bxt = { 77,  0x9A, 0, 128, } },	/* 4:	600		0   */
+	{ .bxt = { 77,  0x9A, 0, 85,  } },	/* 5:	600		3.5 */
+	{ .bxt = { 77,  0x9A, 0, 64,  } },	/* 6:	600		6   */
+	{ .bxt = { 102, 0x9A, 0, 128, } },	/* 7:	800		0   */
+	{ .bxt = { 102, 0x9A, 0, 85,  } },	/* 8:	800		3.5 */
+	{ .bxt = { 154, 0x9A, 1, 128, } },	/* 9:	1200		0   */
+};
+
+static const struct intel_ddi_buf_trans bxt_trans_hdmi = {
+	.entries = _bxt_trans_hdmi,
+	.num_entries = ARRAY_SIZE(_bxt_trans_hdmi),
+	.hdmi_default_entry = ARRAY_SIZE(_bxt_trans_hdmi) - 1,
+};
+
+/* icl_combo_phy_trans */
+static const union intel_ddi_buf_trans_entry _icl_combo_phy_trans_dp_hbr2_edp_hbr3[] = {
+							/* NT mV Trans mV db    */
+	{ .icl = { 0xA, 0x35, 0x3F, 0x00, 0x00 } },	/* 350   350      0.0   */
+	{ .icl = { 0xA, 0x4F, 0x37, 0x00, 0x08 } },	/* 350   500      3.1   */
+	{ .icl = { 0xC, 0x71, 0x2F, 0x00, 0x10 } },	/* 350   700      6.0   */
+	{ .icl = { 0x6, 0x7F, 0x2B, 0x00, 0x14 } },	/* 350   900      8.2   */
+	{ .icl = { 0xA, 0x4C, 0x3F, 0x00, 0x00 } },	/* 500   500      0.0   */
+	{ .icl = { 0xC, 0x73, 0x34, 0x00, 0x0B } },	/* 500   700      2.9   */
+	{ .icl = { 0x6, 0x7F, 0x2F, 0x00, 0x10 } },	/* 500   900      5.1   */
+	{ .icl = { 0xC, 0x6C, 0x3C, 0x00, 0x03 } },	/* 650   700      0.6   */
+	{ .icl = { 0x6, 0x7F, 0x35, 0x00, 0x0A } },	/* 600   900      3.5   */
+	{ .icl = { 0x6, 0x7F, 0x3F, 0x00, 0x00 } },	/* 900   900      0.0   */
+};
+
+static const struct intel_ddi_buf_trans icl_combo_phy_trans_dp_hbr2_edp_hbr3 = {
+	.entries = _icl_combo_phy_trans_dp_hbr2_edp_hbr3,
+	.num_entries = ARRAY_SIZE(_icl_combo_phy_trans_dp_hbr2_edp_hbr3),
+};
+
+static const union intel_ddi_buf_trans_entry _icl_combo_phy_trans_edp_hbr2[] = {
+							/* NT mV Trans mV db    */
+	{ .icl = { 0x0, 0x7F, 0x3F, 0x00, 0x00 } },	/* 200   200      0.0   */
+	{ .icl = { 0x8, 0x7F, 0x38, 0x00, 0x07 } },	/* 200   250      1.9   */
+	{ .icl = { 0x1, 0x7F, 0x33, 0x00, 0x0C } },	/* 200   300      3.5   */
+	{ .icl = { 0x9, 0x7F, 0x31, 0x00, 0x0E } },	/* 200   350      4.9   */
+	{ .icl = { 0x8, 0x7F, 0x3F, 0x00, 0x00 } },	/* 250   250      0.0   */
+	{ .icl = { 0x1, 0x7F, 0x38, 0x00, 0x07 } },	/* 250   300      1.6   */
+	{ .icl = { 0x9, 0x7F, 0x35, 0x00, 0x0A } },	/* 250   350      2.9   */
+	{ .icl = { 0x1, 0x7F, 0x3F, 0x00, 0x00 } },	/* 300   300      0.0   */
+	{ .icl = { 0x9, 0x7F, 0x38, 0x00, 0x07 } },	/* 300   350      1.3   */
+	{ .icl = { 0x9, 0x7F, 0x3F, 0x00, 0x00 } },	/* 350   350      0.0   */
+};
+
+static const struct intel_ddi_buf_trans icl_combo_phy_trans_edp_hbr2 = {
+	.entries = _icl_combo_phy_trans_edp_hbr2,
+	.num_entries = ARRAY_SIZE(_icl_combo_phy_trans_edp_hbr2),
+};
+
+static const union intel_ddi_buf_trans_entry _icl_combo_phy_trans_hdmi[] = {
+							/* NT mV Trans mV db    */
+	{ .icl = { 0xA, 0x60, 0x3F, 0x00, 0x00 } },	/* 450   450      0.0   */
+	{ .icl = { 0xB, 0x73, 0x36, 0x00, 0x09 } },	/* 450   650      3.2   */
+	{ .icl = { 0x6, 0x7F, 0x31, 0x00, 0x0E } },	/* 450   850      5.5   */
+	{ .icl = { 0xB, 0x73, 0x3F, 0x00, 0x00 } },	/* 650   650      0.0   ALS */
+	{ .icl = { 0x6, 0x7F, 0x37, 0x00, 0x08 } },	/* 650   850      2.3   */
+	{ .icl = { 0x6, 0x7F, 0x3F, 0x00, 0x00 } },	/* 850   850      0.0   */
+	{ .icl = { 0x6, 0x7F, 0x35, 0x00, 0x0A } },	/* 600   850      3.0   */
+};
+
+static const struct intel_ddi_buf_trans icl_combo_phy_trans_hdmi = {
+	.entries = _icl_combo_phy_trans_hdmi,
+	.num_entries = ARRAY_SIZE(_icl_combo_phy_trans_hdmi),
+	.hdmi_default_entry = ARRAY_SIZE(_icl_combo_phy_trans_hdmi) - 1,
+};
+
+static const union intel_ddi_buf_trans_entry _ehl_combo_phy_trans_dp[] = {
+							/* NT mV Trans mV db    */
+	{ .icl = { 0xA, 0x33, 0x3F, 0x00, 0x00 } },	/* 350   350      0.0   */
+	{ .icl = { 0xA, 0x47, 0x38, 0x00, 0x07 } },	/* 350   500      3.1   */
+	{ .icl = { 0xC, 0x64, 0x33, 0x00, 0x0C } },	/* 350   700      6.0   */
+	{ .icl = { 0x6, 0x7F, 0x2F, 0x00, 0x10 } },	/* 350   900      8.2   */
+	{ .icl = { 0xA, 0x46, 0x3F, 0x00, 0x00 } },	/* 500   500      0.0   */
+	{ .icl = { 0xC, 0x64, 0x37, 0x00, 0x08 } },	/* 500   700      2.9   */
+	{ .icl = { 0x6, 0x7F, 0x32, 0x00, 0x0D } },	/* 500   900      5.1   */
+	{ .icl = { 0xC, 0x61, 0x3F, 0x00, 0x00 } },	/* 650   700      0.6   */
+	{ .icl = { 0x6, 0x7F, 0x37, 0x00, 0x08 } },	/* 600   900      3.5   */
+	{ .icl = { 0x6, 0x7F, 0x3F, 0x00, 0x00 } },	/* 900   900      0.0   */
+};
+
+static const struct intel_ddi_buf_trans ehl_combo_phy_trans_dp = {
+	.entries = _ehl_combo_phy_trans_dp,
+	.num_entries = ARRAY_SIZE(_ehl_combo_phy_trans_dp),
+};
+
+static const union intel_ddi_buf_trans_entry _ehl_combo_phy_trans_edp_hbr2[] = {
+							/* NT mV Trans mV db    */
+	{ .icl = { 0x8, 0x7F, 0x3F, 0x00, 0x00 } },	/* 200   200      0.0   */
+	{ .icl = { 0x8, 0x7F, 0x3F, 0x00, 0x00 } },	/* 200   250      1.9   */
+	{ .icl = { 0x1, 0x7F, 0x3D, 0x00, 0x02 } },	/* 200   300      3.5   */
+	{ .icl = { 0xA, 0x35, 0x39, 0x00, 0x06 } },	/* 200   350      4.9   */
+	{ .icl = { 0x8, 0x7F, 0x3F, 0x00, 0x00 } },	/* 250   250      0.0   */
+	{ .icl = { 0x1, 0x7F, 0x3C, 0x00, 0x03 } },	/* 250   300      1.6   */
+	{ .icl = { 0xA, 0x35, 0x39, 0x00, 0x06 } },	/* 250   350      2.9   */
+	{ .icl = { 0x1, 0x7F, 0x3F, 0x00, 0x00 } },	/* 300   300      0.0   */
+	{ .icl = { 0xA, 0x35, 0x38, 0x00, 0x07 } },	/* 300   350      1.3   */
+	{ .icl = { 0xA, 0x35, 0x3F, 0x00, 0x00 } },	/* 350   350      0.0   */
+};
+
+static const struct intel_ddi_buf_trans ehl_combo_phy_trans_edp_hbr2 = {
+	.entries = _ehl_combo_phy_trans_edp_hbr2,
+	.num_entries = ARRAY_SIZE(_ehl_combo_phy_trans_edp_hbr2),
+};
+
+static const union intel_ddi_buf_trans_entry _jsl_combo_phy_trans_edp_hbr[] = {
+							/* NT mV Trans mV db    */
+	{ .icl = { 0x8, 0x7F, 0x3F, 0x00, 0x00 } },	/* 200   200      0.0   */
+	{ .icl = { 0x8, 0x7F, 0x38, 0x00, 0x07 } },	/* 200   250      1.9   */
+	{ .icl = { 0x1, 0x7F, 0x33, 0x00, 0x0C } },	/* 200   300      3.5   */
+	{ .icl = { 0xA, 0x35, 0x36, 0x00, 0x09 } },	/* 200   350      4.9   */
+	{ .icl = { 0x8, 0x7F, 0x3F, 0x00, 0x00 } },	/* 250   250      0.0   */
+	{ .icl = { 0x1, 0x7F, 0x38, 0x00, 0x07 } },	/* 250   300      1.6   */
+	{ .icl = { 0xA, 0x35, 0x35, 0x00, 0x0A } },	/* 250   350      2.9   */
+	{ .icl = { 0x1, 0x7F, 0x3F, 0x00, 0x00 } },	/* 300   300      0.0   */
+	{ .icl = { 0xA, 0x35, 0x38, 0x00, 0x07 } },	/* 300   350      1.3   */
+	{ .icl = { 0xA, 0x35, 0x3F, 0x00, 0x00 } },	/* 350   350      0.0   */
+};
+
+static const struct intel_ddi_buf_trans jsl_combo_phy_trans_edp_hbr = {
+	.entries = _jsl_combo_phy_trans_edp_hbr,
+	.num_entries = ARRAY_SIZE(_jsl_combo_phy_trans_edp_hbr),
+};
+
+static const union intel_ddi_buf_trans_entry _jsl_combo_phy_trans_edp_hbr2[] = {
+							/* NT mV Trans mV db    */
+	{ .icl = { 0x8, 0x7F, 0x3F, 0x00, 0x00 } },	/* 200   200      0.0   */
+	{ .icl = { 0x8, 0x7F, 0x3F, 0x00, 0x00 } },	/* 200   250      1.9   */
+	{ .icl = { 0x1, 0x7F, 0x3D, 0x00, 0x02 } },	/* 200   300      3.5   */
+	{ .icl = { 0xA, 0x35, 0x38, 0x00, 0x07 } },	/* 200   350      4.9   */
+	{ .icl = { 0x8, 0x7F, 0x3F, 0x00, 0x00 } },	/* 250   250      0.0   */
+	{ .icl = { 0x1, 0x7F, 0x3F, 0x00, 0x00 } },	/* 250   300      1.6   */
+	{ .icl = { 0xA, 0x35, 0x3A, 0x00, 0x05 } },	/* 250   350      2.9   */
+	{ .icl = { 0x1, 0x7F, 0x3F, 0x00, 0x00 } },	/* 300   300      0.0   */
+	{ .icl = { 0xA, 0x35, 0x38, 0x00, 0x07 } },	/* 300   350      1.3   */
+	{ .icl = { 0xA, 0x35, 0x3F, 0x00, 0x00 } },	/* 350   350      0.0   */
+};
+
+static const struct intel_ddi_buf_trans jsl_combo_phy_trans_edp_hbr2 = {
+	.entries = _jsl_combo_phy_trans_edp_hbr2,
+	.num_entries = ARRAY_SIZE(_jsl_combo_phy_trans_edp_hbr2),
+};
+
+static const union intel_ddi_buf_trans_entry _dg1_combo_phy_trans_dp_rbr_hbr[] = {
+							/* NT mV Trans mV db    */
+	{ .icl = { 0xA, 0x32, 0x3F, 0x00, 0x00 } },	/* 350   350      0.0   */
+	{ .icl = { 0xA, 0x48, 0x35, 0x00, 0x0A } },	/* 350   500      3.1   */
+	{ .icl = { 0xC, 0x63, 0x2F, 0x00, 0x10 } },	/* 350   700      6.0   */
+	{ .icl = { 0x6, 0x7F, 0x2C, 0x00, 0x13 } },	/* 350   900      8.2   */
+	{ .icl = { 0xA, 0x43, 0x3F, 0x00, 0x00 } },	/* 500   500      0.0   */
+	{ .icl = { 0xC, 0x60, 0x36, 0x00, 0x09 } },	/* 500   700      2.9   */
+	{ .icl = { 0x6, 0x7F, 0x30, 0x00, 0x0F } },	/* 500   900      5.1   */
+	{ .icl = { 0xC, 0x60, 0x3F, 0x00, 0x00 } },	/* 650   700      0.6   */
+	{ .icl = { 0x6, 0x7F, 0x37, 0x00, 0x08 } },	/* 600   900      3.5   */
+	{ .icl = { 0x6, 0x7F, 0x3F, 0x00, 0x00 } },	/* 900   900      0.0   */
+};
+
+static const struct intel_ddi_buf_trans dg1_combo_phy_trans_dp_rbr_hbr = {
+	.entries = _dg1_combo_phy_trans_dp_rbr_hbr,
+	.num_entries = ARRAY_SIZE(_dg1_combo_phy_trans_dp_rbr_hbr),
+};
+
+static const union intel_ddi_buf_trans_entry _dg1_combo_phy_trans_dp_hbr2_hbr3[] = {
+							/* NT mV Trans mV db    */
+	{ .icl = { 0xA, 0x32, 0x3F, 0x00, 0x00 } },	/* 350   350      0.0   */
+	{ .icl = { 0xA, 0x48, 0x35, 0x00, 0x0A } },	/* 350   500      3.1   */
+	{ .icl = { 0xC, 0x63, 0x2F, 0x00, 0x10 } },	/* 350   700      6.0   */
+	{ .icl = { 0x6, 0x7F, 0x2C, 0x00, 0x13 } },	/* 350   900      8.2   */
+	{ .icl = { 0xA, 0x43, 0x3F, 0x00, 0x00 } },	/* 500   500      0.0   */
+	{ .icl = { 0xC, 0x60, 0x36, 0x00, 0x09 } },	/* 500   700      2.9   */
+	{ .icl = { 0x6, 0x7F, 0x30, 0x00, 0x0F } },	/* 500   900      5.1   */
+	{ .icl = { 0xC, 0x58, 0x3F, 0x00, 0x00 } },	/* 650   700      0.6   */
+	{ .icl = { 0x6, 0x7F, 0x35, 0x00, 0x0A } },	/* 600   900      3.5   */
+	{ .icl = { 0x6, 0x7F, 0x3F, 0x00, 0x00 } },	/* 900   900      0.0   */
+};
+
+static const struct intel_ddi_buf_trans dg1_combo_phy_trans_dp_hbr2_hbr3 = {
+	.entries = _dg1_combo_phy_trans_dp_hbr2_hbr3,
+	.num_entries = ARRAY_SIZE(_dg1_combo_phy_trans_dp_hbr2_hbr3),
+};
+
+static const union intel_ddi_buf_trans_entry _icl_mg_phy_trans_rbr_hbr[] = {
+					/* Voltage swing  pre-emphasis */
+	{ .mg = { 0x18, 0x00, 0x00 } },	/* 0              0   */
+	{ .mg = { 0x1D, 0x00, 0x05 } },	/* 0              1   */
+	{ .mg = { 0x24, 0x00, 0x0C } },	/* 0              2   */
+	{ .mg = { 0x2B, 0x00, 0x14 } },	/* 0              3   */
+	{ .mg = { 0x21, 0x00, 0x00 } },	/* 1              0   */
+	{ .mg = { 0x2B, 0x00, 0x08 } },	/* 1              1   */
+	{ .mg = { 0x30, 0x00, 0x0F } },	/* 1              2   */
+	{ .mg = { 0x31, 0x00, 0x03 } },	/* 2              0   */
+	{ .mg = { 0x34, 0x00, 0x0B } },	/* 2              1   */
+	{ .mg = { 0x3F, 0x00, 0x00 } },	/* 3              0   */
+};
+
+static const struct intel_ddi_buf_trans icl_mg_phy_trans_rbr_hbr = {
+	.entries = _icl_mg_phy_trans_rbr_hbr,
+	.num_entries = ARRAY_SIZE(_icl_mg_phy_trans_rbr_hbr),
+};
+
+static const union intel_ddi_buf_trans_entry _icl_mg_phy_trans_hbr2_hbr3[] = {
+					/* Voltage swing  pre-emphasis */
+	{ .mg = { 0x18, 0x00, 0x00 } },	/* 0              0   */
+	{ .mg = { 0x1D, 0x00, 0x05 } },	/* 0              1   */
+	{ .mg = { 0x24, 0x00, 0x0C } },	/* 0              2   */
+	{ .mg = { 0x2B, 0x00, 0x14 } },	/* 0              3   */
+	{ .mg = { 0x26, 0x00, 0x00 } },	/* 1              0   */
+	{ .mg = { 0x2C, 0x00, 0x07 } },	/* 1              1   */
+	{ .mg = { 0x33, 0x00, 0x0C } },	/* 1              2   */
+	{ .mg = { 0x2E, 0x00, 0x00 } },	/* 2              0   */
+	{ .mg = { 0x36, 0x00, 0x09 } },	/* 2              1   */
+	{ .mg = { 0x3F, 0x00, 0x00 } },	/* 3              0   */
+};
+
+static const struct intel_ddi_buf_trans icl_mg_phy_trans_hbr2_hbr3 = {
+	.entries = _icl_mg_phy_trans_hbr2_hbr3,
+	.num_entries = ARRAY_SIZE(_icl_mg_phy_trans_hbr2_hbr3),
+};
+
+static const union intel_ddi_buf_trans_entry _icl_mg_phy_trans_hdmi[] = {
+					/* HDMI Preset	VS	Pre-emph */
+	{ .mg = { 0x1A, 0x0, 0x0 } },	/* 1		400mV	0dB */
+	{ .mg = { 0x20, 0x0, 0x0 } },	/* 2		500mV	0dB */
+	{ .mg = { 0x29, 0x0, 0x0 } },	/* 3		650mV	0dB */
+	{ .mg = { 0x32, 0x0, 0x0 } },	/* 4		800mV	0dB */
+	{ .mg = { 0x3F, 0x0, 0x0 } },	/* 5		1000mV	0dB */
+	{ .mg = { 0x3A, 0x0, 0x5 } },	/* 6		Full	-1.5 dB */
+	{ .mg = { 0x39, 0x0, 0x6 } },	/* 7		Full	-1.8 dB */
+	{ .mg = { 0x38, 0x0, 0x7 } },	/* 8		Full	-2 dB */
+	{ .mg = { 0x37, 0x0, 0x8 } },	/* 9		Full	-2.5 dB */
+	{ .mg = { 0x36, 0x0, 0x9 } },	/* 10		Full	-3 dB */
+};
+
+static const struct intel_ddi_buf_trans icl_mg_phy_trans_hdmi = {
+	.entries = _icl_mg_phy_trans_hdmi,
+	.num_entries = ARRAY_SIZE(_icl_mg_phy_trans_hdmi),
+	.hdmi_default_entry = ARRAY_SIZE(_icl_mg_phy_trans_hdmi) - 1,
+};
+
+static const union intel_ddi_buf_trans_entry _tgl_dkl_phy_trans_dp_hbr[] = {
+					/* VS	pre-emp	Non-trans mV	Pre-emph dB */
+	{ .dkl = { 0x7, 0x0, 0x00 } },	/* 0	0	400mV		0 dB */
+	{ .dkl = { 0x5, 0x0, 0x05 } },	/* 0	1	400mV		3.5 dB */
+	{ .dkl = { 0x2, 0x0, 0x0B } },	/* 0	2	400mV		6 dB */
+	{ .dkl = { 0x0, 0x0, 0x18 } },	/* 0	3	400mV		9.5 dB */
+	{ .dkl = { 0x5, 0x0, 0x00 } },	/* 1	0	600mV		0 dB */
+	{ .dkl = { 0x2, 0x0, 0x08 } },	/* 1	1	600mV		3.5 dB */
+	{ .dkl = { 0x0, 0x0, 0x14 } },	/* 1	2	600mV		6 dB */
+	{ .dkl = { 0x2, 0x0, 0x00 } },	/* 2	0	800mV		0 dB */
+	{ .dkl = { 0x0, 0x0, 0x0B } },	/* 2	1	800mV		3.5 dB */
+	{ .dkl = { 0x0, 0x0, 0x00 } },	/* 3	0	1200mV		0 dB HDMI default */
+};
+
+static const struct intel_ddi_buf_trans tgl_dkl_phy_trans_dp_hbr = {
+	.entries = _tgl_dkl_phy_trans_dp_hbr,
+	.num_entries = ARRAY_SIZE(_tgl_dkl_phy_trans_dp_hbr),
+};
+
+static const union intel_ddi_buf_trans_entry _tgl_dkl_phy_trans_dp_hbr2[] = {
+					/* VS	pre-emp	Non-trans mV	Pre-emph dB */
+	{ .dkl = { 0x7, 0x0, 0x00 } },	/* 0	0	400mV		0 dB */
+	{ .dkl = { 0x5, 0x0, 0x05 } },	/* 0	1	400mV		3.5 dB */
+	{ .dkl = { 0x2, 0x0, 0x0B } },	/* 0	2	400mV		6 dB */
+	{ .dkl = { 0x0, 0x0, 0x19 } },	/* 0	3	400mV		9.5 dB */
+	{ .dkl = { 0x5, 0x0, 0x00 } },	/* 1	0	600mV		0 dB */
+	{ .dkl = { 0x2, 0x0, 0x08 } },	/* 1	1	600mV		3.5 dB */
+	{ .dkl = { 0x0, 0x0, 0x14 } },	/* 1	2	600mV		6 dB */
+	{ .dkl = { 0x2, 0x0, 0x00 } },	/* 2	0	800mV		0 dB */
+	{ .dkl = { 0x0, 0x0, 0x0B } },	/* 2	1	800mV		3.5 dB */
+	{ .dkl = { 0x0, 0x0, 0x00 } },	/* 3	0	1200mV		0 dB HDMI default */
+};
+
+static const struct intel_ddi_buf_trans tgl_dkl_phy_trans_dp_hbr2 = {
+	.entries = _tgl_dkl_phy_trans_dp_hbr2,
+	.num_entries = ARRAY_SIZE(_tgl_dkl_phy_trans_dp_hbr2),
+};
+
+static const union intel_ddi_buf_trans_entry _tgl_dkl_phy_trans_hdmi[] = {
+					/* HDMI Preset	VS	Pre-emph */
+	{ .dkl = { 0x7, 0x0, 0x0 } },	/* 1		400mV	0dB */
+	{ .dkl = { 0x6, 0x0, 0x0 } },	/* 2		500mV	0dB */
+	{ .dkl = { 0x4, 0x0, 0x0 } },	/* 3		650mV	0dB */
+	{ .dkl = { 0x2, 0x0, 0x0 } },	/* 4		800mV	0dB */
+	{ .dkl = { 0x0, 0x0, 0x0 } },	/* 5		1000mV	0dB */
+	{ .dkl = { 0x0, 0x0, 0x5 } },	/* 6		Full	-1.5 dB */
+	{ .dkl = { 0x0, 0x0, 0x6 } },	/* 7		Full	-1.8 dB */
+	{ .dkl = { 0x0, 0x0, 0x7 } },	/* 8		Full	-2 dB */
+	{ .dkl = { 0x0, 0x0, 0x8 } },	/* 9		Full	-2.5 dB */
+	{ .dkl = { 0x0, 0x0, 0xA } },	/* 10		Full	-3 dB */
+};
+
+static const struct intel_ddi_buf_trans tgl_dkl_phy_trans_hdmi = {
+	.entries = _tgl_dkl_phy_trans_hdmi,
+	.num_entries = ARRAY_SIZE(_tgl_dkl_phy_trans_hdmi),
+	.hdmi_default_entry = ARRAY_SIZE(_tgl_dkl_phy_trans_hdmi) - 1,
+};
+
+static const union intel_ddi_buf_trans_entry _tgl_combo_phy_trans_dp_hbr[] = {
+							/* NT mV Trans mV db    */
+	{ .icl = { 0xA, 0x32, 0x3F, 0x00, 0x00 } },	/* 350   350      0.0   */
+	{ .icl = { 0xA, 0x4F, 0x37, 0x00, 0x08 } },	/* 350   500      3.1   */
+	{ .icl = { 0xC, 0x71, 0x2F, 0x00, 0x10 } },	/* 350   700      6.0   */
+	{ .icl = { 0x6, 0x7D, 0x2B, 0x00, 0x14 } },	/* 350   900      8.2   */
+	{ .icl = { 0xA, 0x4C, 0x3F, 0x00, 0x00 } },	/* 500   500      0.0   */
+	{ .icl = { 0xC, 0x73, 0x34, 0x00, 0x0B } },	/* 500   700      2.9   */
+	{ .icl = { 0x6, 0x7F, 0x2F, 0x00, 0x10 } },	/* 500   900      5.1   */
+	{ .icl = { 0xC, 0x6C, 0x3C, 0x00, 0x03 } },	/* 650   700      0.6   */
+	{ .icl = { 0x6, 0x7F, 0x35, 0x00, 0x0A } },	/* 600   900      3.5   */
+	{ .icl = { 0x6, 0x7F, 0x3F, 0x00, 0x00 } },	/* 900   900      0.0   */
+};
+
+static const struct intel_ddi_buf_trans tgl_combo_phy_trans_dp_hbr = {
+	.entries = _tgl_combo_phy_trans_dp_hbr,
+	.num_entries = ARRAY_SIZE(_tgl_combo_phy_trans_dp_hbr),
+};
+
+static const union intel_ddi_buf_trans_entry _tgl_combo_phy_trans_dp_hbr2[] = {
+							/* NT mV Trans mV db    */
+	{ .icl = { 0xA, 0x35, 0x3F, 0x00, 0x00 } },	/* 350   350      0.0   */
+	{ .icl = { 0xA, 0x4F, 0x37, 0x00, 0x08 } },	/* 350   500      3.1   */
+	{ .icl = { 0xC, 0x63, 0x2F, 0x00, 0x10 } },	/* 350   700      6.0   */
+	{ .icl = { 0x6, 0x7F, 0x2B, 0x00, 0x14 } },	/* 350   900      8.2   */
+	{ .icl = { 0xA, 0x47, 0x3F, 0x00, 0x00 } },	/* 500   500      0.0   */
+	{ .icl = { 0xC, 0x63, 0x34, 0x00, 0x0B } },	/* 500   700      2.9   */
+	{ .icl = { 0x6, 0x7F, 0x2F, 0x00, 0x10 } },	/* 500   900      5.1   */
+	{ .icl = { 0xC, 0x61, 0x3C, 0x00, 0x03 } },	/* 650   700      0.6   */
+	{ .icl = { 0x6, 0x7B, 0x35, 0x00, 0x0A } },	/* 600   900      3.5   */
+	{ .icl = { 0x6, 0x7F, 0x3F, 0x00, 0x00 } },	/* 900   900      0.0   */
+};
+
+static const struct intel_ddi_buf_trans tgl_combo_phy_trans_dp_hbr2 = {
+	.entries = _tgl_combo_phy_trans_dp_hbr2,
+	.num_entries = ARRAY_SIZE(_tgl_combo_phy_trans_dp_hbr2),
+};
+
+static const union intel_ddi_buf_trans_entry _tgl_uy_combo_phy_trans_dp_hbr2[] = {
+							/* NT mV Trans mV db    */
+	{ .icl = { 0xA, 0x35, 0x3F, 0x00, 0x00 } },	/* 350   350      0.0   */
+	{ .icl = { 0xA, 0x4F, 0x36, 0x00, 0x09 } },	/* 350   500      3.1   */
+	{ .icl = { 0xC, 0x60, 0x32, 0x00, 0x0D } },	/* 350   700      6.0   */
+	{ .icl = { 0xC, 0x7F, 0x2D, 0x00, 0x12 } },	/* 350   900      8.2   */
+	{ .icl = { 0xC, 0x47, 0x3F, 0x00, 0x00 } },	/* 500   500      0.0   */
+	{ .icl = { 0xC, 0x6F, 0x36, 0x00, 0x09 } },	/* 500   700      2.9   */
+	{ .icl = { 0x6, 0x7D, 0x32, 0x00, 0x0D } },	/* 500   900      5.1   */
+	{ .icl = { 0x6, 0x60, 0x3C, 0x00, 0x03 } },	/* 650   700      0.6   */
+	{ .icl = { 0x6, 0x7F, 0x34, 0x00, 0x0B } },	/* 600   900      3.5   */
+	{ .icl = { 0x6, 0x7F, 0x3F, 0x00, 0x00 } },	/* 900   900      0.0   */
+};
+
+static const struct intel_ddi_buf_trans tgl_uy_combo_phy_trans_dp_hbr2 = {
+	.entries = _tgl_uy_combo_phy_trans_dp_hbr2,
+	.num_entries = ARRAY_SIZE(_tgl_uy_combo_phy_trans_dp_hbr2),
+};
+
+/*
+ * Cloned the HOBL entry to comply with the voltage and pre-emphasis entries
+ * that DisplayPort specification requires
+ */
+static const union intel_ddi_buf_trans_entry _tgl_combo_phy_trans_edp_hbr2_hobl[] = {
+							/* VS	pre-emp	*/
+	{ .icl = { 0x6, 0x7F, 0x3F, 0x00, 0x00 } },	/* 0	0	*/
+	{ .icl = { 0x6, 0x7F, 0x3F, 0x00, 0x00 } },	/* 0	1	*/
+	{ .icl = { 0x6, 0x7F, 0x3F, 0x00, 0x00 } },	/* 0	2	*/
+	{ .icl = { 0x6, 0x7F, 0x3F, 0x00, 0x00 } },	/* 0	3	*/
+	{ .icl = { 0x6, 0x7F, 0x3F, 0x00, 0x00 } },	/* 1	0	*/
+	{ .icl = { 0x6, 0x7F, 0x3F, 0x00, 0x00 } },	/* 1	1	*/
+	{ .icl = { 0x6, 0x7F, 0x3F, 0x00, 0x00 } },	/* 1	2	*/
+	{ .icl = { 0x6, 0x7F, 0x3F, 0x00, 0x00 } },	/* 2	0	*/
+	{ .icl = { 0x6, 0x7F, 0x3F, 0x00, 0x00 } },	/* 2	1	*/
+};
+
+static const struct intel_ddi_buf_trans tgl_combo_phy_trans_edp_hbr2_hobl = {
+	.entries = _tgl_combo_phy_trans_edp_hbr2_hobl,
+	.num_entries = ARRAY_SIZE(_tgl_combo_phy_trans_edp_hbr2_hobl),
+};
+
+static const union intel_ddi_buf_trans_entry _rkl_combo_phy_trans_dp_hbr[] = {
+							/* NT mV Trans mV db    */
+	{ .icl = { 0xA, 0x2F, 0x3F, 0x00, 0x00 } },	/* 350   350      0.0   */
+	{ .icl = { 0xA, 0x4F, 0x37, 0x00, 0x08 } },	/* 350   500      3.1   */
+	{ .icl = { 0xC, 0x63, 0x2F, 0x00, 0x10 } },	/* 350   700      6.0   */
+	{ .icl = { 0x6, 0x7D, 0x2A, 0x00, 0x15 } },	/* 350   900      8.2   */
+	{ .icl = { 0xA, 0x4C, 0x3F, 0x00, 0x00 } },	/* 500   500      0.0   */
+	{ .icl = { 0xC, 0x73, 0x34, 0x00, 0x0B } },	/* 500   700      2.9   */
+	{ .icl = { 0x6, 0x7F, 0x2F, 0x00, 0x10 } },	/* 500   900      5.1   */
+	{ .icl = { 0xC, 0x6E, 0x3E, 0x00, 0x01 } },	/* 650   700      0.6   */
+	{ .icl = { 0x6, 0x7F, 0x35, 0x00, 0x0A } },	/* 600   900      3.5   */
+	{ .icl = { 0x6, 0x7F, 0x3F, 0x00, 0x00 } },	/* 900   900      0.0   */
+};
+
+static const struct intel_ddi_buf_trans rkl_combo_phy_trans_dp_hbr = {
+	.entries = _rkl_combo_phy_trans_dp_hbr,
+	.num_entries = ARRAY_SIZE(_rkl_combo_phy_trans_dp_hbr),
+};
+
+static const union intel_ddi_buf_trans_entry _rkl_combo_phy_trans_dp_hbr2_hbr3[] = {
+							/* NT mV Trans mV db    */
+	{ .icl = { 0xA, 0x35, 0x3F, 0x00, 0x00 } },	/* 350   350      0.0   */
+	{ .icl = { 0xA, 0x50, 0x38, 0x00, 0x07 } },	/* 350   500      3.1   */
+	{ .icl = { 0xC, 0x61, 0x33, 0x00, 0x0C } },	/* 350   700      6.0   */
+	{ .icl = { 0x6, 0x7F, 0x2E, 0x00, 0x11 } },	/* 350   900      8.2   */
+	{ .icl = { 0xA, 0x47, 0x3F, 0x00, 0x00 } },	/* 500   500      0.0   */
+	{ .icl = { 0xC, 0x5F, 0x38, 0x00, 0x07 } },	/* 500   700      2.9   */
+	{ .icl = { 0x6, 0x7F, 0x2F, 0x00, 0x10 } },	/* 500   900      5.1   */
+	{ .icl = { 0xC, 0x5F, 0x3F, 0x00, 0x00 } },	/* 650   700      0.6   */
+	{ .icl = { 0x6, 0x7E, 0x36, 0x00, 0x09 } },	/* 600   900      3.5   */
+	{ .icl = { 0x6, 0x7F, 0x3F, 0x00, 0x00 } },	/* 900   900      0.0   */
+};
+
+static const struct intel_ddi_buf_trans rkl_combo_phy_trans_dp_hbr2_hbr3 = {
+	.entries = _rkl_combo_phy_trans_dp_hbr2_hbr3,
+	.num_entries = ARRAY_SIZE(_rkl_combo_phy_trans_dp_hbr2_hbr3),
+};
+
+static const union intel_ddi_buf_trans_entry _adls_combo_phy_trans_dp_hbr2_hbr3[] = {
+							/* NT mV Trans mV db    */
+	{ .icl = { 0xA, 0x35, 0x3F, 0x00, 0x00 } },	/* 350   350      0.0   */
+	{ .icl = { 0xA, 0x4F, 0x37, 0x00, 0x08 } },	/* 350   500      3.1   */
+	{ .icl = { 0xC, 0x63, 0x31, 0x00, 0x0E } },	/* 350   700      6.0   */
+	{ .icl = { 0x6, 0x7F, 0x2C, 0x00, 0x13 } },	/* 350   900      8.2   */
+	{ .icl = { 0xA, 0x47, 0x3F, 0x00, 0x00 } },	/* 500   500      0.0   */
+	{ .icl = { 0xC, 0x63, 0x37, 0x00, 0x08 } },	/* 500   700      2.9   */
+	{ .icl = { 0x6, 0x73, 0x32, 0x00, 0x0D } },	/* 500   900      5.1   */
+	{ .icl = { 0xC, 0x58, 0x3F, 0x00, 0x00 } },	/* 650   700      0.6   */
+	{ .icl = { 0x6, 0x7F, 0x35, 0x00, 0x0A } },	/* 600   900      3.5   */
+	{ .icl = { 0x6, 0x7F, 0x3F, 0x00, 0x00 } },	/* 900   900      0.0   */
+};
+
+static const struct intel_ddi_buf_trans adls_combo_phy_trans_dp_hbr2_hbr3 = {
+	.entries = _adls_combo_phy_trans_dp_hbr2_hbr3,
+	.num_entries = ARRAY_SIZE(_adls_combo_phy_trans_dp_hbr2_hbr3),
+};
+
+static const union intel_ddi_buf_trans_entry _adls_combo_phy_trans_edp_hbr2[] = {
+							/* NT mV Trans mV db    */
+	{ .icl = { 0x9, 0x73, 0x3D, 0x00, 0x02 } },	/* 200   200      0.0   */
+	{ .icl = { 0x9, 0x7A, 0x3C, 0x00, 0x03 } },	/* 200   250      1.9   */
+	{ .icl = { 0x9, 0x7F, 0x3B, 0x00, 0x04 } },	/* 200   300      3.5   */
+	{ .icl = { 0x4, 0x6C, 0x33, 0x00, 0x0C } },	/* 200   350      4.9   */
+	{ .icl = { 0x2, 0x73, 0x3A, 0x00, 0x05 } },	/* 250   250      0.0   */
+	{ .icl = { 0x2, 0x7C, 0x38, 0x00, 0x07 } },	/* 250   300      1.6   */
+	{ .icl = { 0x4, 0x5A, 0x36, 0x00, 0x09 } },	/* 250   350      2.9   */
+	{ .icl = { 0x4, 0x57, 0x3D, 0x00, 0x02 } },	/* 300   300      0.0   */
+	{ .icl = { 0x4, 0x65, 0x38, 0x00, 0x07 } },	/* 300   350      1.3   */
+	{ .icl = { 0x4, 0x6C, 0x3A, 0x00, 0x05 } },	/* 350   350      0.0   */
+};
+
+static const struct intel_ddi_buf_trans adls_combo_phy_trans_edp_hbr2 = {
+	.entries = _adls_combo_phy_trans_edp_hbr2,
+	.num_entries = ARRAY_SIZE(_adls_combo_phy_trans_edp_hbr2),
+};
+
+static const union intel_ddi_buf_trans_entry _adls_combo_phy_trans_edp_hbr3[] = {
+							/* NT mV Trans mV db    */
+	{ .icl = { 0xA, 0x35, 0x3F, 0x00, 0x00 } },	/* 350   350      0.0   */
+	{ .icl = { 0xA, 0x4F, 0x37, 0x00, 0x08 } },	/* 350   500      3.1   */
+	{ .icl = { 0xC, 0x63, 0x31, 0x00, 0x0E } },	/* 350   700      6.0   */
+	{ .icl = { 0x6, 0x7F, 0x2C, 0x00, 0x13 } },	/* 350   900      8.2   */
+	{ .icl = { 0xA, 0x47, 0x3F, 0x00, 0x00 } },	/* 500   500      0.0   */
+	{ .icl = { 0xC, 0x63, 0x37, 0x00, 0x08 } },	/* 500   700      2.9   */
+	{ .icl = { 0x6, 0x73, 0x32, 0x00, 0x0D } },	/* 500   900      5.1   */
+	{ .icl = { 0xC, 0x58, 0x3F, 0x00, 0x00 } },	/* 650   700      0.6   */
+	{ .icl = { 0x6, 0x7F, 0x35, 0x00, 0x0A } },	/* 600   900      3.5   */
+	{ .icl = { 0x6, 0x7F, 0x3F, 0x00, 0x00 } },	/* 900   900      0.0   */
+};
+
+static const struct intel_ddi_buf_trans adls_combo_phy_trans_edp_hbr3 = {
+	.entries = _adls_combo_phy_trans_edp_hbr3,
+	.num_entries = ARRAY_SIZE(_adls_combo_phy_trans_edp_hbr3),
+};
+
+static const union intel_ddi_buf_trans_entry _adlp_combo_phy_trans_dp_hbr[] = {
+							/* NT mV Trans mV db    */
+	{ .icl = { 0xA, 0x35, 0x3F, 0x00, 0x00 } },	/* 350   350      0.0   */
+	{ .icl = { 0xA, 0x4F, 0x37, 0x00, 0x08 } },	/* 350   500      3.1   */
+	{ .icl = { 0xC, 0x71, 0x31, 0x00, 0x0E } },	/* 350   700      6.0   */
+	{ .icl = { 0x6, 0x7F, 0x2C, 0x00, 0x13 } },	/* 350   900      8.2   */
+	{ .icl = { 0xA, 0x4C, 0x3F, 0x00, 0x00 } },	/* 500   500      0.0   */
+	{ .icl = { 0xC, 0x73, 0x34, 0x00, 0x0B } },	/* 500   700      2.9   */
+	{ .icl = { 0x6, 0x7F, 0x2F, 0x00, 0x10 } },	/* 500   900      5.1   */
+	{ .icl = { 0xC, 0x7C, 0x3C, 0x00, 0x03 } },	/* 650   700      0.6   */
+	{ .icl = { 0x6, 0x7F, 0x35, 0x00, 0x0A } },	/* 600   900      3.5   */
+	{ .icl = { 0x6, 0x7F, 0x3F, 0x00, 0x00 } },	/* 900   900      0.0   */
+};
+
+static const struct intel_ddi_buf_trans adlp_combo_phy_trans_dp_hbr = {
+	.entries = _adlp_combo_phy_trans_dp_hbr,
+	.num_entries = ARRAY_SIZE(_adlp_combo_phy_trans_dp_hbr),
+};
+
+static const union intel_ddi_buf_trans_entry _adlp_combo_phy_trans_dp_hbr2_hbr3[] = {
+							/* NT mV Trans mV db    */
+	{ .icl = { 0xA, 0x35, 0x3F, 0x00, 0x00 } },	/* 350   350      0.0   */
+	{ .icl = { 0xA, 0x4F, 0x37, 0x00, 0x08 } },	/* 350   500      3.1   */
+	{ .icl = { 0xC, 0x71, 0x30, 0x00, 0x0F } },	/* 350   700      6.0   */
+	{ .icl = { 0x6, 0x7F, 0x2B, 0x00, 0x14 } },	/* 350   900      8.2   */
+	{ .icl = { 0xA, 0x4C, 0x3F, 0x00, 0x00 } },	/* 500   500      0.0   */
+	{ .icl = { 0xC, 0x73, 0x34, 0x00, 0x0B } },	/* 500   700      2.9   */
+	{ .icl = { 0x6, 0x7F, 0x30, 0x00, 0x0F } },	/* 500   900      5.1   */
+	{ .icl = { 0xC, 0x63, 0x3F, 0x00, 0x00 } },	/* 650   700      0.6   */
+	{ .icl = { 0x6, 0x7F, 0x38, 0x00, 0x07 } },	/* 600   900      3.5   */
+	{ .icl = { 0x6, 0x7F, 0x3F, 0x00, 0x00 } },	/* 900   900      0.0   */
+};
+
+static const union intel_ddi_buf_trans_entry _adlp_combo_phy_trans_edp_hbr2[] = {
+							/* NT mV Trans mV db    */
+	{ .icl = { 0x4, 0x50, 0x38, 0x00, 0x07 } },	/* 200   200      0.0   */
+	{ .icl = { 0x4, 0x58, 0x35, 0x00, 0x0A } },	/* 200   250      1.9   */
+	{ .icl = { 0x4, 0x60, 0x34, 0x00, 0x0B } },	/* 200   300      3.5   */
+	{ .icl = { 0x4, 0x6A, 0x32, 0x00, 0x0D } },	/* 200   350      4.9   */
+	{ .icl = { 0x4, 0x5E, 0x38, 0x00, 0x07 } },	/* 250   250      0.0   */
+	{ .icl = { 0x4, 0x61, 0x36, 0x00, 0x09 } },	/* 250   300      1.6   */
+	{ .icl = { 0x4, 0x6B, 0x34, 0x00, 0x0B } },	/* 250   350      2.9   */
+	{ .icl = { 0x4, 0x69, 0x39, 0x00, 0x06 } },	/* 300   300      0.0   */
+	{ .icl = { 0x4, 0x73, 0x37, 0x00, 0x08 } },	/* 300   350      1.3   */
+	{ .icl = { 0x4, 0x7A, 0x38, 0x00, 0x07 } },	/* 350   350      0.0   */
+};
+
+static const union intel_ddi_buf_trans_entry _adlp_combo_phy_trans_dp_hbr2_edp_hbr3[] = {
+							/* NT mV Trans mV db    */
+	{ .icl = { 0xA, 0x35, 0x3F, 0x00, 0x00 } },	/* 350   350      0.0   */
+	{ .icl = { 0xA, 0x4F, 0x37, 0x00, 0x08 } },	/* 350   500      3.1   */
+	{ .icl = { 0xC, 0x71, 0x30, 0x00, 0x0f } },	/* 350   700      6.0   */
+	{ .icl = { 0x6, 0x7F, 0x2B, 0x00, 0x14 } },	/* 350   900      8.2   */
+	{ .icl = { 0xA, 0x4C, 0x3F, 0x00, 0x00 } },	/* 500   500      0.0   */
+	{ .icl = { 0xC, 0x73, 0x34, 0x00, 0x0B } },	/* 500   700      2.9   */
+	{ .icl = { 0x6, 0x7F, 0x30, 0x00, 0x0F } },	/* 500   900      5.1   */
+	{ .icl = { 0xC, 0x63, 0x3F, 0x00, 0x00 } },	/* 650   700      0.6   */
+	{ .icl = { 0x6, 0x7F, 0x38, 0x00, 0x07 } },	/* 600   900      3.5   */
+	{ .icl = { 0x6, 0x7F, 0x3F, 0x00, 0x00 } },	/* 900   900      0.0   */
+};
+
+static const struct intel_ddi_buf_trans adlp_combo_phy_trans_dp_hbr2_hbr3 = {
+	.entries = _adlp_combo_phy_trans_dp_hbr2_hbr3,
+	.num_entries = ARRAY_SIZE(_adlp_combo_phy_trans_dp_hbr2_hbr3),
+};
+
+static const struct intel_ddi_buf_trans adlp_combo_phy_trans_edp_hbr3 = {
+	.entries = _adlp_combo_phy_trans_dp_hbr2_edp_hbr3,
+	.num_entries = ARRAY_SIZE(_adlp_combo_phy_trans_dp_hbr2_edp_hbr3),
+};
+
+static const struct intel_ddi_buf_trans adlp_combo_phy_trans_edp_up_to_hbr2 = {
+	.entries = _adlp_combo_phy_trans_edp_hbr2,
+	.num_entries = ARRAY_SIZE(_adlp_combo_phy_trans_edp_hbr2),
+};
+
+static const union intel_ddi_buf_trans_entry _adlp_dkl_phy_trans_dp_hbr[] = {
+					/* VS	pre-emp	Non-trans mV	Pre-emph dB */
+	{ .dkl = { 0x7, 0x0, 0x01 } },	/* 0	0	400mV		0 dB */
+	{ .dkl = { 0x5, 0x0, 0x06 } },	/* 0	1	400mV		3.5 dB */
+	{ .dkl = { 0x2, 0x0, 0x0B } },	/* 0	2	400mV		6 dB */
+	{ .dkl = { 0x0, 0x0, 0x17 } },	/* 0	3	400mV		9.5 dB */
+	{ .dkl = { 0x5, 0x0, 0x00 } },	/* 1	0	600mV		0 dB */
+	{ .dkl = { 0x2, 0x0, 0x08 } },	/* 1	1	600mV		3.5 dB */
+	{ .dkl = { 0x0, 0x0, 0x14 } },	/* 1	2	600mV		6 dB */
+	{ .dkl = { 0x2, 0x0, 0x00 } },	/* 2	0	800mV		0 dB */
+	{ .dkl = { 0x0, 0x0, 0x0B } },	/* 2	1	800mV		3.5 dB */
+	{ .dkl = { 0x0, 0x0, 0x00 } },	/* 3	0	1200mV		0 dB */
+};
+
+static const struct intel_ddi_buf_trans adlp_dkl_phy_trans_dp_hbr = {
+	.entries = _adlp_dkl_phy_trans_dp_hbr,
+	.num_entries = ARRAY_SIZE(_adlp_dkl_phy_trans_dp_hbr),
+};
+
+static const union intel_ddi_buf_trans_entry _adlp_dkl_phy_trans_dp_hbr2_hbr3[] = {
+					/* VS	pre-emp	Non-trans mV	Pre-emph dB */
+	{ .dkl = { 0x7, 0x0, 0x00 } },	/* 0	0	400mV		0 dB */
+	{ .dkl = { 0x5, 0x0, 0x04 } },	/* 0	1	400mV		3.5 dB */
+	{ .dkl = { 0x2, 0x0, 0x0A } },	/* 0	2	400mV		6 dB */
+	{ .dkl = { 0x0, 0x0, 0x18 } },	/* 0	3	400mV		9.5 dB */
+	{ .dkl = { 0x5, 0x0, 0x00 } },	/* 1	0	600mV		0 dB */
+	{ .dkl = { 0x2, 0x0, 0x06 } },	/* 1	1	600mV		3.5 dB */
+	{ .dkl = { 0x0, 0x0, 0x14 } },	/* 1	2	600mV		6 dB */
+	{ .dkl = { 0x2, 0x0, 0x00 } },	/* 2	0	800mV		0 dB */
+	{ .dkl = { 0x0, 0x0, 0x09 } },	/* 2	1	800mV		3.5 dB */
+	{ .dkl = { 0x0, 0x0, 0x00 } },	/* 3	0	1200mV		0 dB */
+};
+
+static const struct intel_ddi_buf_trans adlp_dkl_phy_trans_dp_hbr2_hbr3 = {
+	.entries = _adlp_dkl_phy_trans_dp_hbr2_hbr3,
+	.num_entries = ARRAY_SIZE(_adlp_dkl_phy_trans_dp_hbr2_hbr3),
+};
+
+static const union intel_ddi_buf_trans_entry _dg2_snps_trans[] = {
+	{ .snps = { 25, 0, 0 } },	/* VS 0, pre-emph 0 */
+	{ .snps = { 32, 0, 6 } },	/* VS 0, pre-emph 1 */
+	{ .snps = { 35, 0, 10 } },	/* VS 0, pre-emph 2 */
+	{ .snps = { 43, 0, 17 } },	/* VS 0, pre-emph 3 */
+	{ .snps = { 35, 0, 0 } },	/* VS 1, pre-emph 0 */
+	{ .snps = { 45, 0, 8 } },	/* VS 1, pre-emph 1 */
+	{ .snps = { 48, 0, 14 } },	/* VS 1, pre-emph 2 */
+	{ .snps = { 47, 0, 0 } },	/* VS 2, pre-emph 0 */
+	{ .snps = { 55, 0, 7 } },	/* VS 2, pre-emph 1 */
+	{ .snps = { 62, 0, 0 } },	/* VS 3, pre-emph 0 */
+};
+
+static const struct intel_ddi_buf_trans dg2_snps_trans = {
+	.entries = _dg2_snps_trans,
+	.num_entries = ARRAY_SIZE(_dg2_snps_trans),
+	.hdmi_default_entry = ARRAY_SIZE(_dg2_snps_trans) - 1,
+};
+
+static const union intel_ddi_buf_trans_entry _dg2_snps_trans_uhbr[] = {
+	{ .snps = { 62, 0, 0 } },	/* preset 0 */
+	{ .snps = { 55, 0, 7 } },	/* preset 1 */
+	{ .snps = { 50, 0, 12 } },	/* preset 2 */
+	{ .snps = { 44, 0, 18 } },	/* preset 3 */
+	{ .snps = { 35, 0, 21 } },	/* preset 4 */
+	{ .snps = { 59, 3, 0 } },	/* preset 5 */
+	{ .snps = { 53, 3, 6 } },	/* preset 6 */
+	{ .snps = { 48, 3, 11 } },	/* preset 7 */
+	{ .snps = { 42, 5, 15 } },	/* preset 8 */
+	{ .snps = { 37, 5, 20 } },	/* preset 9 */
+	{ .snps = { 56, 6, 0 } },	/* preset 10 */
+	{ .snps = { 48, 7, 7 } },	/* preset 11 */
+	{ .snps = { 45, 7, 10 } },	/* preset 12 */
+	{ .snps = { 39, 8, 15 } },	/* preset 13 */
+	{ .snps = { 48, 14, 0 } },	/* preset 14 */
+	{ .snps = { 45, 4, 4 } },	/* preset 15 */
+};
+
+static const struct intel_ddi_buf_trans dg2_snps_trans_uhbr = {
+	.entries = _dg2_snps_trans_uhbr,
+	.num_entries = ARRAY_SIZE(_dg2_snps_trans_uhbr),
+};
+
+bool is_hobl_buf_trans(const struct intel_ddi_buf_trans *table)
+{
+	return table == &tgl_combo_phy_trans_edp_hbr2_hobl;
+}
+
+static bool use_edp_hobl(struct intel_encoder *encoder)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	struct intel_connector *connector = intel_dp->attached_connector;
+
+	return connector->panel.vbt.edp.hobl && !intel_dp->hobl_failed;
+}
+
+static bool use_edp_low_vswing(struct intel_encoder *encoder)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	struct intel_connector *connector = intel_dp->attached_connector;
+
+	return connector->panel.vbt.edp.low_vswing;
+}
+
+static const struct intel_ddi_buf_trans *
+intel_get_buf_trans(const struct intel_ddi_buf_trans *trans, int *num_entries)
+{
+	*num_entries = trans->num_entries;
+	return trans;
+}
+
+static const struct intel_ddi_buf_trans *
+hsw_get_buf_trans(struct intel_encoder *encoder,
+		  const struct intel_crtc_state *crtc_state,
+		  int *n_entries)
+{
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG))
+		return intel_get_buf_trans(&hsw_trans_fdi, n_entries);
+	else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		return intel_get_buf_trans(&hsw_trans_hdmi, n_entries);
+	else
+		return intel_get_buf_trans(&hsw_trans_dp, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+bdw_get_buf_trans(struct intel_encoder *encoder,
+		  const struct intel_crtc_state *crtc_state,
+		  int *n_entries)
+{
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG))
+		return intel_get_buf_trans(&bdw_trans_fdi, n_entries);
+	else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		return intel_get_buf_trans(&bdw_trans_hdmi, n_entries);
+	else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP) &&
+		 use_edp_low_vswing(encoder))
+		return intel_get_buf_trans(&bdw_trans_edp, n_entries);
+	else
+		return intel_get_buf_trans(&bdw_trans_dp, n_entries);
+}
+
+static int skl_buf_trans_num_entries(enum port port, int n_entries)
+{
+	/* Only DDIA and DDIE can select the 10th register with DP */
+	if (port == PORT_A || port == PORT_E)
+		return min(n_entries, 10);
+	else
+		return min(n_entries, 9);
+}
+
+static const struct intel_ddi_buf_trans *
+_skl_get_buf_trans_dp(struct intel_encoder *encoder,
+		      const struct intel_ddi_buf_trans *trans,
+		      int *n_entries)
+{
+	trans = intel_get_buf_trans(trans, n_entries);
+	*n_entries = skl_buf_trans_num_entries(encoder->port, *n_entries);
+	return trans;
+}
+
+static const struct intel_ddi_buf_trans *
+skl_y_get_buf_trans(struct intel_encoder *encoder,
+		    const struct intel_crtc_state *crtc_state,
+		    int *n_entries)
+{
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		return intel_get_buf_trans(&skl_y_trans_hdmi, n_entries);
+	else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP) &&
+		 use_edp_low_vswing(encoder))
+		return _skl_get_buf_trans_dp(encoder, &skl_y_trans_edp, n_entries);
+	else
+		return _skl_get_buf_trans_dp(encoder, &skl_y_trans_dp, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+skl_u_get_buf_trans(struct intel_encoder *encoder,
+		    const struct intel_crtc_state *crtc_state,
+		    int *n_entries)
+{
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		return intel_get_buf_trans(&skl_trans_hdmi, n_entries);
+	else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP) &&
+		 use_edp_low_vswing(encoder))
+		return _skl_get_buf_trans_dp(encoder, &skl_u_trans_edp, n_entries);
+	else
+		return _skl_get_buf_trans_dp(encoder, &skl_u_trans_dp, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+skl_get_buf_trans(struct intel_encoder *encoder,
+		  const struct intel_crtc_state *crtc_state,
+		  int *n_entries)
+{
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		return intel_get_buf_trans(&skl_trans_hdmi, n_entries);
+	else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP) &&
+		 use_edp_low_vswing(encoder))
+		return _skl_get_buf_trans_dp(encoder, &skl_trans_edp, n_entries);
+	else
+		return _skl_get_buf_trans_dp(encoder, &skl_trans_dp, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+kbl_y_get_buf_trans(struct intel_encoder *encoder,
+		    const struct intel_crtc_state *crtc_state,
+		    int *n_entries)
+{
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		return intel_get_buf_trans(&skl_y_trans_hdmi, n_entries);
+	else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP) &&
+		 use_edp_low_vswing(encoder))
+		return _skl_get_buf_trans_dp(encoder, &skl_y_trans_edp, n_entries);
+	else
+		return _skl_get_buf_trans_dp(encoder, &kbl_y_trans_dp, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+kbl_u_get_buf_trans(struct intel_encoder *encoder,
+		    const struct intel_crtc_state *crtc_state,
+		    int *n_entries)
+{
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		return intel_get_buf_trans(&skl_trans_hdmi, n_entries);
+	else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP) &&
+		 use_edp_low_vswing(encoder))
+		return _skl_get_buf_trans_dp(encoder, &skl_u_trans_edp, n_entries);
+	else
+		return _skl_get_buf_trans_dp(encoder, &kbl_u_trans_dp, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+kbl_get_buf_trans(struct intel_encoder *encoder,
+		  const struct intel_crtc_state *crtc_state,
+		  int *n_entries)
+{
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		return intel_get_buf_trans(&skl_trans_hdmi, n_entries);
+	else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP) &&
+		 use_edp_low_vswing(encoder))
+		return _skl_get_buf_trans_dp(encoder, &skl_trans_edp, n_entries);
+	else
+		return _skl_get_buf_trans_dp(encoder, &kbl_trans_dp, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+bxt_get_buf_trans(struct intel_encoder *encoder,
+		  const struct intel_crtc_state *crtc_state,
+		  int *n_entries)
+{
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		return intel_get_buf_trans(&bxt_trans_hdmi, n_entries);
+	else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP) &&
+		 use_edp_low_vswing(encoder))
+		return intel_get_buf_trans(&bxt_trans_edp, n_entries);
+	else
+		return intel_get_buf_trans(&bxt_trans_dp, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+icl_get_combo_buf_trans_dp(struct intel_encoder *encoder,
+			   const struct intel_crtc_state *crtc_state,
+			   int *n_entries)
+{
+	return intel_get_buf_trans(&icl_combo_phy_trans_dp_hbr2_edp_hbr3,
+				   n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+icl_get_combo_buf_trans_edp(struct intel_encoder *encoder,
+			    const struct intel_crtc_state *crtc_state,
+			    int *n_entries)
+{
+	if (crtc_state->port_clock > 540000) {
+		return intel_get_buf_trans(&icl_combo_phy_trans_dp_hbr2_edp_hbr3,
+					   n_entries);
+	} else if (use_edp_low_vswing(encoder)) {
+		return intel_get_buf_trans(&icl_combo_phy_trans_edp_hbr2,
+					   n_entries);
+	}
+
+	return icl_get_combo_buf_trans_dp(encoder, crtc_state, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+icl_get_combo_buf_trans(struct intel_encoder *encoder,
+			const struct intel_crtc_state *crtc_state,
+			int *n_entries)
+{
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		return intel_get_buf_trans(&icl_combo_phy_trans_hdmi, n_entries);
+	else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP))
+		return icl_get_combo_buf_trans_edp(encoder, crtc_state, n_entries);
+	else
+		return icl_get_combo_buf_trans_dp(encoder, crtc_state, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+icl_get_mg_buf_trans_dp(struct intel_encoder *encoder,
+			const struct intel_crtc_state *crtc_state,
+			int *n_entries)
+{
+	if (crtc_state->port_clock > 270000) {
+		return intel_get_buf_trans(&icl_mg_phy_trans_hbr2_hbr3,
+					   n_entries);
+	} else {
+		return intel_get_buf_trans(&icl_mg_phy_trans_rbr_hbr,
+					   n_entries);
+	}
+}
+
+static const struct intel_ddi_buf_trans *
+icl_get_mg_buf_trans(struct intel_encoder *encoder,
+		     const struct intel_crtc_state *crtc_state,
+		     int *n_entries)
+{
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		return intel_get_buf_trans(&icl_mg_phy_trans_hdmi, n_entries);
+	else
+		return icl_get_mg_buf_trans_dp(encoder, crtc_state, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+ehl_get_combo_buf_trans_edp(struct intel_encoder *encoder,
+			    const struct intel_crtc_state *crtc_state,
+			    int *n_entries)
+{
+	if (crtc_state->port_clock > 270000)
+		return intel_get_buf_trans(&ehl_combo_phy_trans_edp_hbr2, n_entries);
+	else
+		return intel_get_buf_trans(&icl_combo_phy_trans_edp_hbr2, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+ehl_get_combo_buf_trans(struct intel_encoder *encoder,
+			const struct intel_crtc_state *crtc_state,
+			int *n_entries)
+{
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		return intel_get_buf_trans(&icl_combo_phy_trans_hdmi, n_entries);
+	else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP) &&
+		 use_edp_low_vswing(encoder))
+		return ehl_get_combo_buf_trans_edp(encoder, crtc_state, n_entries);
+	else
+		return intel_get_buf_trans(&ehl_combo_phy_trans_dp, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+jsl_get_combo_buf_trans_edp(struct intel_encoder *encoder,
+			    const struct intel_crtc_state *crtc_state,
+			    int *n_entries)
+{
+	if (crtc_state->port_clock > 270000)
+		return intel_get_buf_trans(&jsl_combo_phy_trans_edp_hbr2, n_entries);
+	else
+		return intel_get_buf_trans(&jsl_combo_phy_trans_edp_hbr, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+jsl_get_combo_buf_trans(struct intel_encoder *encoder,
+			const struct intel_crtc_state *crtc_state,
+			int *n_entries)
+{
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		return intel_get_buf_trans(&icl_combo_phy_trans_hdmi, n_entries);
+	else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP) &&
+		 use_edp_low_vswing(encoder))
+		return jsl_get_combo_buf_trans_edp(encoder, crtc_state, n_entries);
+	else
+		return intel_get_buf_trans(&icl_combo_phy_trans_dp_hbr2_edp_hbr3, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+tgl_get_combo_buf_trans_dp(struct intel_encoder *encoder,
+			   const struct intel_crtc_state *crtc_state,
+			   int *n_entries)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+
+	if (crtc_state->port_clock > 270000) {
+		if (IS_TGL_UY(dev_priv)) {
+			return intel_get_buf_trans(&tgl_uy_combo_phy_trans_dp_hbr2,
+						   n_entries);
+		} else {
+			return intel_get_buf_trans(&tgl_combo_phy_trans_dp_hbr2,
+						   n_entries);
+		}
+	} else {
+		return intel_get_buf_trans(&tgl_combo_phy_trans_dp_hbr,
+					   n_entries);
+	}
+}
+
+static const struct intel_ddi_buf_trans *
+tgl_get_combo_buf_trans_edp(struct intel_encoder *encoder,
+			    const struct intel_crtc_state *crtc_state,
+			    int *n_entries)
+{
+	if (crtc_state->port_clock > 540000) {
+		return intel_get_buf_trans(&icl_combo_phy_trans_dp_hbr2_edp_hbr3,
+					   n_entries);
+	} else if (use_edp_hobl(encoder)) {
+		return intel_get_buf_trans(&tgl_combo_phy_trans_edp_hbr2_hobl,
+					   n_entries);
+	} else if (use_edp_low_vswing(encoder)) {
+		return intel_get_buf_trans(&icl_combo_phy_trans_edp_hbr2,
+					   n_entries);
+	}
+
+	return tgl_get_combo_buf_trans_dp(encoder, crtc_state, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+tgl_get_combo_buf_trans(struct intel_encoder *encoder,
+			const struct intel_crtc_state *crtc_state,
+			int *n_entries)
+{
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		return intel_get_buf_trans(&icl_combo_phy_trans_hdmi, n_entries);
+	else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP))
+		return tgl_get_combo_buf_trans_edp(encoder, crtc_state, n_entries);
+	else
+		return tgl_get_combo_buf_trans_dp(encoder, crtc_state, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+dg1_get_combo_buf_trans_dp(struct intel_encoder *encoder,
+			   const struct intel_crtc_state *crtc_state,
+			   int *n_entries)
+{
+	if (crtc_state->port_clock > 270000)
+		return intel_get_buf_trans(&dg1_combo_phy_trans_dp_hbr2_hbr3,
+					   n_entries);
+	else
+		return intel_get_buf_trans(&dg1_combo_phy_trans_dp_rbr_hbr,
+					   n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+dg1_get_combo_buf_trans_edp(struct intel_encoder *encoder,
+			    const struct intel_crtc_state *crtc_state,
+			    int *n_entries)
+{
+	if (crtc_state->port_clock > 540000)
+		return intel_get_buf_trans(&icl_combo_phy_trans_dp_hbr2_edp_hbr3,
+					   n_entries);
+	else if (use_edp_hobl(encoder))
+		return intel_get_buf_trans(&tgl_combo_phy_trans_edp_hbr2_hobl,
+					   n_entries);
+	else if (use_edp_low_vswing(encoder))
+		return intel_get_buf_trans(&icl_combo_phy_trans_edp_hbr2,
+					   n_entries);
+	else
+		return dg1_get_combo_buf_trans_dp(encoder, crtc_state, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+dg1_get_combo_buf_trans(struct intel_encoder *encoder,
+			const struct intel_crtc_state *crtc_state,
+			int *n_entries)
+{
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		return intel_get_buf_trans(&icl_combo_phy_trans_hdmi, n_entries);
+	else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP))
+		return dg1_get_combo_buf_trans_edp(encoder, crtc_state, n_entries);
+	else
+		return dg1_get_combo_buf_trans_dp(encoder, crtc_state, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+rkl_get_combo_buf_trans_dp(struct intel_encoder *encoder,
+			   const struct intel_crtc_state *crtc_state,
+			   int *n_entries)
+{
+	if (crtc_state->port_clock > 270000)
+		return intel_get_buf_trans(&rkl_combo_phy_trans_dp_hbr2_hbr3, n_entries);
+	else
+		return intel_get_buf_trans(&rkl_combo_phy_trans_dp_hbr, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+rkl_get_combo_buf_trans_edp(struct intel_encoder *encoder,
+			    const struct intel_crtc_state *crtc_state,
+			    int *n_entries)
+{
+	if (crtc_state->port_clock > 540000) {
+		return intel_get_buf_trans(&icl_combo_phy_trans_dp_hbr2_edp_hbr3,
+					   n_entries);
+	} else if (use_edp_hobl(encoder)) {
+		return intel_get_buf_trans(&tgl_combo_phy_trans_edp_hbr2_hobl,
+					   n_entries);
+	} else if (use_edp_low_vswing(encoder)) {
+		return intel_get_buf_trans(&icl_combo_phy_trans_edp_hbr2,
+					   n_entries);
+	}
+
+	return rkl_get_combo_buf_trans_dp(encoder, crtc_state, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+rkl_get_combo_buf_trans(struct intel_encoder *encoder,
+			const struct intel_crtc_state *crtc_state,
+			int *n_entries)
+{
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		return intel_get_buf_trans(&icl_combo_phy_trans_hdmi, n_entries);
+	else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP))
+		return rkl_get_combo_buf_trans_edp(encoder, crtc_state, n_entries);
+	else
+		return rkl_get_combo_buf_trans_dp(encoder, crtc_state, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+adls_get_combo_buf_trans_dp(struct intel_encoder *encoder,
+			    const struct intel_crtc_state *crtc_state,
+			    int *n_entries)
+{
+	if (crtc_state->port_clock > 270000)
+		return intel_get_buf_trans(&adls_combo_phy_trans_dp_hbr2_hbr3, n_entries);
+	else
+		return intel_get_buf_trans(&tgl_combo_phy_trans_dp_hbr, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+adls_get_combo_buf_trans_edp(struct intel_encoder *encoder,
+			     const struct intel_crtc_state *crtc_state,
+			     int *n_entries)
+{
+	if (crtc_state->port_clock > 540000)
+		return intel_get_buf_trans(&adls_combo_phy_trans_edp_hbr3, n_entries);
+	else if (use_edp_hobl(encoder))
+		return intel_get_buf_trans(&tgl_combo_phy_trans_edp_hbr2_hobl, n_entries);
+	else if (use_edp_low_vswing(encoder))
+		return intel_get_buf_trans(&adls_combo_phy_trans_edp_hbr2, n_entries);
+	else
+		return adls_get_combo_buf_trans_dp(encoder, crtc_state, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+adls_get_combo_buf_trans(struct intel_encoder *encoder,
+			 const struct intel_crtc_state *crtc_state,
+			 int *n_entries)
+{
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		return intel_get_buf_trans(&icl_combo_phy_trans_hdmi, n_entries);
+	else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP))
+		return adls_get_combo_buf_trans_edp(encoder, crtc_state, n_entries);
+	else
+		return adls_get_combo_buf_trans_dp(encoder, crtc_state, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+adlp_get_combo_buf_trans_dp(struct intel_encoder *encoder,
+			    const struct intel_crtc_state *crtc_state,
+			    int *n_entries)
+{
+	if (crtc_state->port_clock > 270000)
+		return intel_get_buf_trans(&adlp_combo_phy_trans_dp_hbr2_hbr3, n_entries);
+	else
+		return intel_get_buf_trans(&adlp_combo_phy_trans_dp_hbr, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+adlp_get_combo_buf_trans_edp(struct intel_encoder *encoder,
+			     const struct intel_crtc_state *crtc_state,
+			     int *n_entries)
+{
+	if (crtc_state->port_clock > 540000) {
+		return intel_get_buf_trans(&adlp_combo_phy_trans_edp_hbr3,
+					   n_entries);
+	} else if (use_edp_hobl(encoder)) {
+		return intel_get_buf_trans(&tgl_combo_phy_trans_edp_hbr2_hobl,
+					   n_entries);
+	} else if (use_edp_low_vswing(encoder)) {
+		return intel_get_buf_trans(&adlp_combo_phy_trans_edp_up_to_hbr2,
+					   n_entries);
+	}
+
+	return adlp_get_combo_buf_trans_dp(encoder, crtc_state, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+adlp_get_combo_buf_trans(struct intel_encoder *encoder,
+			 const struct intel_crtc_state *crtc_state,
+			 int *n_entries)
+{
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		return intel_get_buf_trans(&icl_combo_phy_trans_hdmi, n_entries);
+	else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP))
+		return adlp_get_combo_buf_trans_edp(encoder, crtc_state, n_entries);
+	else
+		return adlp_get_combo_buf_trans_dp(encoder, crtc_state, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+tgl_get_dkl_buf_trans_dp(struct intel_encoder *encoder,
+			 const struct intel_crtc_state *crtc_state,
+			 int *n_entries)
+{
+	if (crtc_state->port_clock > 270000) {
+		return intel_get_buf_trans(&tgl_dkl_phy_trans_dp_hbr2,
+					   n_entries);
+	} else {
+		return intel_get_buf_trans(&tgl_dkl_phy_trans_dp_hbr,
+					   n_entries);
+	}
+}
+
+static const struct intel_ddi_buf_trans *
+tgl_get_dkl_buf_trans(struct intel_encoder *encoder,
+		      const struct intel_crtc_state *crtc_state,
+		      int *n_entries)
+{
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		return intel_get_buf_trans(&tgl_dkl_phy_trans_hdmi, n_entries);
+	else
+		return tgl_get_dkl_buf_trans_dp(encoder, crtc_state, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+adlp_get_dkl_buf_trans_dp(struct intel_encoder *encoder,
+			  const struct intel_crtc_state *crtc_state,
+			  int *n_entries)
+{
+	if (crtc_state->port_clock > 270000) {
+		return intel_get_buf_trans(&adlp_dkl_phy_trans_dp_hbr2_hbr3,
+					   n_entries);
+	} else {
+		return intel_get_buf_trans(&adlp_dkl_phy_trans_dp_hbr,
+					   n_entries);
+	}
+}
+
+static const struct intel_ddi_buf_trans *
+adlp_get_dkl_buf_trans(struct intel_encoder *encoder,
+		       const struct intel_crtc_state *crtc_state,
+		       int *n_entries)
+{
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		return intel_get_buf_trans(&tgl_dkl_phy_trans_hdmi, n_entries);
+	else
+		return adlp_get_dkl_buf_trans_dp(encoder, crtc_state, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+dg2_get_snps_buf_trans(struct intel_encoder *encoder,
+		       const struct intel_crtc_state *crtc_state,
+		       int *n_entries)
+{
+	if (intel_crtc_has_dp_encoder(crtc_state) &&
+	    intel_dp_is_uhbr(crtc_state))
+		return intel_get_buf_trans(&dg2_snps_trans_uhbr, n_entries);
+	else
+		return intel_get_buf_trans(&dg2_snps_trans, n_entries);
+}
+
+void intel_ddi_buf_trans_init(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum phy phy = intel_port_to_phy(i915, encoder->port);
+
+	if (IS_DG2(i915)) {
+		encoder->get_buf_trans = dg2_get_snps_buf_trans;
+	} else if (IS_ALDERLAKE_P(i915)) {
+		if (intel_phy_is_combo(i915, phy))
+			encoder->get_buf_trans = adlp_get_combo_buf_trans;
+		else
+			encoder->get_buf_trans = adlp_get_dkl_buf_trans;
+	} else if (IS_ALDERLAKE_S(i915)) {
+		encoder->get_buf_trans = adls_get_combo_buf_trans;
+	} else if (IS_ROCKETLAKE(i915)) {
+		encoder->get_buf_trans = rkl_get_combo_buf_trans;
+	} else if (IS_DG1(i915)) {
+		encoder->get_buf_trans = dg1_get_combo_buf_trans;
+	} else if (DISPLAY_VER(i915) >= 12) {
+		if (intel_phy_is_combo(i915, phy))
+			encoder->get_buf_trans = tgl_get_combo_buf_trans;
+		else
+			encoder->get_buf_trans = tgl_get_dkl_buf_trans;
+	} else if (DISPLAY_VER(i915) == 11) {
+		if (IS_PLATFORM(i915, INTEL_JASPERLAKE))
+			encoder->get_buf_trans = jsl_get_combo_buf_trans;
+		else if (IS_PLATFORM(i915, INTEL_ELKHARTLAKE))
+			encoder->get_buf_trans = ehl_get_combo_buf_trans;
+		else if (intel_phy_is_combo(i915, phy))
+			encoder->get_buf_trans = icl_get_combo_buf_trans;
+		else
+			encoder->get_buf_trans = icl_get_mg_buf_trans;
+	} else if (IS_GEMINILAKE(i915) || IS_BROXTON(i915)) {
+		encoder->get_buf_trans = bxt_get_buf_trans;
+	} else if (IS_CML_ULX(i915) || IS_CFL_ULX(i915) || IS_KBL_ULX(i915)) {
+		encoder->get_buf_trans = kbl_y_get_buf_trans;
+	} else if (IS_CML_ULT(i915) || IS_CFL_ULT(i915) || IS_KBL_ULT(i915)) {
+		encoder->get_buf_trans = kbl_u_get_buf_trans;
+	} else if (IS_COMETLAKE(i915) || IS_COFFEELAKE(i915) || IS_KABYLAKE(i915)) {
+		encoder->get_buf_trans = kbl_get_buf_trans;
+	} else if (IS_SKL_ULX(i915)) {
+		encoder->get_buf_trans = skl_y_get_buf_trans;
+	} else if (IS_SKL_ULT(i915)) {
+		encoder->get_buf_trans = skl_u_get_buf_trans;
+	} else if (IS_SKYLAKE(i915)) {
+		encoder->get_buf_trans = skl_get_buf_trans;
+	} else if (IS_BROADWELL(i915)) {
+		encoder->get_buf_trans = bdw_get_buf_trans;
+	} else if (IS_HASWELL(i915)) {
+		encoder->get_buf_trans = hsw_get_buf_trans;
+	} else {
+		MISSING_CASE(INTEL_INFO(i915)->platform);
+	}
+}
diff --git a/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.h b/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.h
new file mode 100644
index 000000000..2133984a5
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.h
@@ -0,0 +1,73 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#ifndef _INTEL_DDI_BUF_TRANS_H_
+#define _INTEL_DDI_BUF_TRANS_H_
+
+#include <linux/types.h>
+
+struct drm_i915_private;
+struct intel_encoder;
+struct intel_crtc_state;
+
+struct hsw_ddi_buf_trans {
+	u32 trans1;	/* balance leg enable, de-emph level */
+	u32 trans2;	/* vref sel, vswing */
+	u8 i_boost;	/* SKL: I_boost; valid: 0x0, 0x1, 0x3, 0x7 */
+};
+
+struct bxt_ddi_buf_trans {
+	u8 margin;	/* swing value */
+	u8 scale;	/* scale value */
+	u8 enable;	/* scale enable */
+	u8 deemphasis;
+};
+
+struct icl_ddi_buf_trans {
+	u8 dw2_swing_sel;
+	u8 dw7_n_scalar;
+	u8 dw4_cursor_coeff;
+	u8 dw4_post_cursor_2;
+	u8 dw4_post_cursor_1;
+};
+
+struct icl_mg_phy_ddi_buf_trans {
+	u8 cri_txdeemph_override_11_6;
+	u8 cri_txdeemph_override_5_0;
+	u8 cri_txdeemph_override_17_12;
+};
+
+struct tgl_dkl_phy_ddi_buf_trans {
+	u8 vswing;
+	u8 preshoot;
+	u8 de_emphasis;
+};
+
+struct dg2_snps_phy_buf_trans {
+	u8 vswing;
+	u8 pre_cursor;
+	u8 post_cursor;
+};
+
+union intel_ddi_buf_trans_entry {
+	struct hsw_ddi_buf_trans hsw;
+	struct bxt_ddi_buf_trans bxt;
+	struct icl_ddi_buf_trans icl;
+	struct icl_mg_phy_ddi_buf_trans mg;
+	struct tgl_dkl_phy_ddi_buf_trans dkl;
+	struct dg2_snps_phy_buf_trans snps;
+};
+
+struct intel_ddi_buf_trans {
+	const union intel_ddi_buf_trans_entry *entries;
+	u8 num_entries;
+	u8 hdmi_default_entry;
+};
+
+bool is_hobl_buf_trans(const struct intel_ddi_buf_trans *table);
+
+void intel_ddi_buf_trans_init(struct intel_encoder *encoder);
+
+#endif
diff --git a/drivers/gpu/drm/i915/display/intel_de.h b/drivers/gpu/drm/i915/display/intel_de.h
new file mode 100644
index 000000000..9c104f65e
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_de.h
@@ -0,0 +1,84 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_DE_H__
+#define __INTEL_DE_H__
+
+#include "i915_drv.h"
+#include "i915_trace.h"
+#include "intel_uncore.h"
+
+static inline u32
+intel_de_read(struct drm_i915_private *i915, i915_reg_t reg)
+{
+	return intel_uncore_read(&i915->uncore, reg);
+}
+
+static inline void
+intel_de_posting_read(struct drm_i915_private *i915, i915_reg_t reg)
+{
+	intel_uncore_posting_read(&i915->uncore, reg);
+}
+
+static inline void
+intel_de_write(struct drm_i915_private *i915, i915_reg_t reg, u32 val)
+{
+	intel_uncore_write(&i915->uncore, reg, val);
+}
+
+static inline void
+intel_de_rmw(struct drm_i915_private *i915, i915_reg_t reg, u32 clear, u32 set)
+{
+	intel_uncore_rmw(&i915->uncore, reg, clear, set);
+}
+
+static inline int
+intel_de_wait_for_register(struct drm_i915_private *i915, i915_reg_t reg,
+			   u32 mask, u32 value, unsigned int timeout)
+{
+	return intel_wait_for_register(&i915->uncore, reg, mask, value, timeout);
+}
+
+static inline int
+intel_de_wait_for_set(struct drm_i915_private *i915, i915_reg_t reg,
+		      u32 mask, unsigned int timeout)
+{
+	return intel_de_wait_for_register(i915, reg, mask, mask, timeout);
+}
+
+static inline int
+intel_de_wait_for_clear(struct drm_i915_private *i915, i915_reg_t reg,
+			u32 mask, unsigned int timeout)
+{
+	return intel_de_wait_for_register(i915, reg, mask, 0, timeout);
+}
+
+/*
+ * Unlocked mmio-accessors, think carefully before using these.
+ *
+ * Certain architectures will die if the same cacheline is concurrently accessed
+ * by different clients (e.g. on Ivybridge). Access to registers should
+ * therefore generally be serialised, by either the dev_priv->uncore.lock or
+ * a more localised lock guarding all access to that bank of registers.
+ */
+static inline u32
+intel_de_read_fw(struct drm_i915_private *i915, i915_reg_t reg)
+{
+	u32 val;
+
+	val = intel_uncore_read_fw(&i915->uncore, reg);
+	trace_i915_reg_rw(false, reg, val, sizeof(val), true);
+
+	return val;
+}
+
+static inline void
+intel_de_write_fw(struct drm_i915_private *i915, i915_reg_t reg, u32 val)
+{
+	trace_i915_reg_rw(true, reg, val, sizeof(val), true);
+	intel_uncore_write_fw(&i915->uncore, reg, val);
+}
+
+#endif /* __INTEL_DE_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
new file mode 100644
index 000000000..fb8d1d634
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -0,0 +1,9140 @@
+/*
+ * Copyright © 2006-2007 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *	Eric Anholt <eric@anholt.net>
+ */
+
+#include <acpi/video.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/dma-resv.h>
+#include <linux/slab.h>
+#include <linux/string_helpers.h>
+#include <linux/vga_switcheroo.h>
+
+#include <drm/display/drm_dp_helper.h>
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_atomic_uapi.h>
+#include <drm/drm_damage_helper.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_fourcc.h>
+#include <drm/drm_privacy_screen_consumer.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_rect.h>
+
+#include "display/intel_audio.h"
+#include "display/intel_crt.h"
+#include "display/intel_ddi.h"
+#include "display/intel_display_debugfs.h"
+#include "display/intel_display_power.h"
+#include "display/intel_dp.h"
+#include "display/intel_dp_mst.h"
+#include "display/intel_dpll.h"
+#include "display/intel_dpll_mgr.h"
+#include "display/intel_drrs.h"
+#include "display/intel_dsi.h"
+#include "display/intel_dvo.h"
+#include "display/intel_fb.h"
+#include "display/intel_gmbus.h"
+#include "display/intel_hdmi.h"
+#include "display/intel_lvds.h"
+#include "display/intel_sdvo.h"
+#include "display/intel_snps_phy.h"
+#include "display/intel_tv.h"
+#include "display/intel_vdsc.h"
+#include "display/intel_vrr.h"
+
+#include "gem/i915_gem_lmem.h"
+#include "gem/i915_gem_object.h"
+
+#include "gt/gen8_ppgtt.h"
+
+#include "g4x_dp.h"
+#include "g4x_hdmi.h"
+#include "hsw_ips.h"
+#include "i915_drv.h"
+#include "i915_utils.h"
+#include "icl_dsi.h"
+#include "intel_acpi.h"
+#include "intel_atomic.h"
+#include "intel_atomic_plane.h"
+#include "intel_bw.h"
+#include "intel_cdclk.h"
+#include "intel_color.h"
+#include "intel_crtc.h"
+#include "intel_crtc_state_dump.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_dmc.h"
+#include "intel_dp_link_training.h"
+#include "intel_dpt.h"
+#include "intel_dsb.h"
+#include "intel_fbc.h"
+#include "intel_fbdev.h"
+#include "intel_fdi.h"
+#include "intel_fifo_underrun.h"
+#include "intel_frontbuffer.h"
+#include "intel_hdcp.h"
+#include "intel_hotplug.h"
+#include "intel_modeset_verify.h"
+#include "intel_modeset_setup.h"
+#include "intel_overlay.h"
+#include "intel_panel.h"
+#include "intel_pch_display.h"
+#include "intel_pch_refclk.h"
+#include "intel_pcode.h"
+#include "intel_pipe_crc.h"
+#include "intel_plane_initial.h"
+#include "intel_pm.h"
+#include "intel_pps.h"
+#include "intel_psr.h"
+#include "intel_quirks.h"
+#include "intel_sprite.h"
+#include "intel_tc.h"
+#include "intel_vga.h"
+#include "i9xx_plane.h"
+#include "skl_scaler.h"
+#include "skl_universal_plane.h"
+#include "skl_watermark.h"
+#include "vlv_dsi.h"
+#include "vlv_dsi_pll.h"
+#include "vlv_dsi_regs.h"
+#include "vlv_sideband.h"
+
+static void intel_set_transcoder_timings(const struct intel_crtc_state *crtc_state);
+static void intel_set_pipe_src_size(const struct intel_crtc_state *crtc_state);
+static void hsw_set_transconf(const struct intel_crtc_state *crtc_state);
+static void bdw_set_pipemisc(const struct intel_crtc_state *crtc_state);
+static void ilk_pfit_enable(const struct intel_crtc_state *crtc_state);
+
+/**
+ * intel_update_watermarks - update FIFO watermark values based on current modes
+ * @dev_priv: i915 device
+ *
+ * Calculate watermark values for the various WM regs based on current mode
+ * and plane configuration.
+ *
+ * There are several cases to deal with here:
+ *   - normal (i.e. non-self-refresh)
+ *   - self-refresh (SR) mode
+ *   - lines are large relative to FIFO size (buffer can hold up to 2)
+ *   - lines are small relative to FIFO size (buffer can hold more than 2
+ *     lines), so need to account for TLB latency
+ *
+ *   The normal calculation is:
+ *     watermark = dotclock * bytes per pixel * latency
+ *   where latency is platform & configuration dependent (we assume pessimal
+ *   values here).
+ *
+ *   The SR calculation is:
+ *     watermark = (trunc(latency/line time)+1) * surface width *
+ *       bytes per pixel
+ *   where
+ *     line time = htotal / dotclock
+ *     surface width = hdisplay for normal plane and 64 for cursor
+ *   and latency is assumed to be high, as above.
+ *
+ * The final value programmed to the register should always be rounded up,
+ * and include an extra 2 entries to account for clock crossings.
+ *
+ * We don't use the sprite, so we can ignore that.  And on Crestline we have
+ * to set the non-SR watermarks to 8.
+ */
+void intel_update_watermarks(struct drm_i915_private *dev_priv)
+{
+	if (dev_priv->display.funcs.wm->update_wm)
+		dev_priv->display.funcs.wm->update_wm(dev_priv);
+}
+
+static int intel_compute_pipe_wm(struct intel_atomic_state *state,
+				 struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	if (dev_priv->display.funcs.wm->compute_pipe_wm)
+		return dev_priv->display.funcs.wm->compute_pipe_wm(state, crtc);
+	return 0;
+}
+
+static int intel_compute_intermediate_wm(struct intel_atomic_state *state,
+					 struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	if (!dev_priv->display.funcs.wm->compute_intermediate_wm)
+		return 0;
+	if (drm_WARN_ON(&dev_priv->drm,
+			!dev_priv->display.funcs.wm->compute_pipe_wm))
+		return 0;
+	return dev_priv->display.funcs.wm->compute_intermediate_wm(state, crtc);
+}
+
+static bool intel_initial_watermarks(struct intel_atomic_state *state,
+				     struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	if (dev_priv->display.funcs.wm->initial_watermarks) {
+		dev_priv->display.funcs.wm->initial_watermarks(state, crtc);
+		return true;
+	}
+	return false;
+}
+
+static void intel_atomic_update_watermarks(struct intel_atomic_state *state,
+					   struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	if (dev_priv->display.funcs.wm->atomic_update_watermarks)
+		dev_priv->display.funcs.wm->atomic_update_watermarks(state, crtc);
+}
+
+static void intel_optimize_watermarks(struct intel_atomic_state *state,
+				      struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	if (dev_priv->display.funcs.wm->optimize_watermarks)
+		dev_priv->display.funcs.wm->optimize_watermarks(state, crtc);
+}
+
+static int intel_compute_global_watermarks(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	if (dev_priv->display.funcs.wm->compute_global_watermarks)
+		return dev_priv->display.funcs.wm->compute_global_watermarks(state);
+	return 0;
+}
+
+/* returns HPLL frequency in kHz */
+int vlv_get_hpll_vco(struct drm_i915_private *dev_priv)
+{
+	int hpll_freq, vco_freq[] = { 800, 1600, 2000, 2400 };
+
+	/* Obtain SKU information */
+	hpll_freq = vlv_cck_read(dev_priv, CCK_FUSE_REG) &
+		CCK_FUSE_HPLL_FREQ_MASK;
+
+	return vco_freq[hpll_freq] * 1000;
+}
+
+int vlv_get_cck_clock(struct drm_i915_private *dev_priv,
+		      const char *name, u32 reg, int ref_freq)
+{
+	u32 val;
+	int divider;
+
+	val = vlv_cck_read(dev_priv, reg);
+	divider = val & CCK_FREQUENCY_VALUES;
+
+	drm_WARN(&dev_priv->drm, (val & CCK_FREQUENCY_STATUS) !=
+		 (divider << CCK_FREQUENCY_STATUS_SHIFT),
+		 "%s change in progress\n", name);
+
+	return DIV_ROUND_CLOSEST(ref_freq << 1, divider + 1);
+}
+
+int vlv_get_cck_clock_hpll(struct drm_i915_private *dev_priv,
+			   const char *name, u32 reg)
+{
+	int hpll;
+
+	vlv_cck_get(dev_priv);
+
+	if (dev_priv->hpll_freq == 0)
+		dev_priv->hpll_freq = vlv_get_hpll_vco(dev_priv);
+
+	hpll = vlv_get_cck_clock(dev_priv, name, reg, dev_priv->hpll_freq);
+
+	vlv_cck_put(dev_priv);
+
+	return hpll;
+}
+
+static void intel_update_czclk(struct drm_i915_private *dev_priv)
+{
+	if (!(IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)))
+		return;
+
+	dev_priv->czclk_freq = vlv_get_cck_clock_hpll(dev_priv, "czclk",
+						      CCK_CZ_CLOCK_CONTROL);
+
+	drm_dbg(&dev_priv->drm, "CZ clock rate: %d kHz\n",
+		dev_priv->czclk_freq);
+}
+
+static bool is_hdr_mode(const struct intel_crtc_state *crtc_state)
+{
+	return (crtc_state->active_planes &
+		~(icl_hdr_plane_mask() | BIT(PLANE_CURSOR))) == 0;
+}
+
+/* WA Display #0827: Gen9:all */
+static void
+skl_wa_827(struct drm_i915_private *dev_priv, enum pipe pipe, bool enable)
+{
+	if (enable)
+		intel_de_write(dev_priv, CLKGATE_DIS_PSL(pipe),
+		               intel_de_read(dev_priv, CLKGATE_DIS_PSL(pipe)) | DUPS1_GATING_DIS | DUPS2_GATING_DIS);
+	else
+		intel_de_write(dev_priv, CLKGATE_DIS_PSL(pipe),
+		               intel_de_read(dev_priv, CLKGATE_DIS_PSL(pipe)) & ~(DUPS1_GATING_DIS | DUPS2_GATING_DIS));
+}
+
+/* Wa_2006604312:icl,ehl */
+static void
+icl_wa_scalerclkgating(struct drm_i915_private *dev_priv, enum pipe pipe,
+		       bool enable)
+{
+	if (enable)
+		intel_de_write(dev_priv, CLKGATE_DIS_PSL(pipe),
+		               intel_de_read(dev_priv, CLKGATE_DIS_PSL(pipe)) | DPFR_GATING_DIS);
+	else
+		intel_de_write(dev_priv, CLKGATE_DIS_PSL(pipe),
+		               intel_de_read(dev_priv, CLKGATE_DIS_PSL(pipe)) & ~DPFR_GATING_DIS);
+}
+
+/* Wa_1604331009:icl,jsl,ehl */
+static void
+icl_wa_cursorclkgating(struct drm_i915_private *dev_priv, enum pipe pipe,
+		       bool enable)
+{
+	intel_de_rmw(dev_priv, CLKGATE_DIS_PSL(pipe), CURSOR_GATING_DIS,
+		     enable ? CURSOR_GATING_DIS : 0);
+}
+
+static bool
+is_trans_port_sync_slave(const struct intel_crtc_state *crtc_state)
+{
+	return crtc_state->master_transcoder != INVALID_TRANSCODER;
+}
+
+static bool
+is_trans_port_sync_master(const struct intel_crtc_state *crtc_state)
+{
+	return crtc_state->sync_mode_slaves_mask != 0;
+}
+
+bool
+is_trans_port_sync_mode(const struct intel_crtc_state *crtc_state)
+{
+	return is_trans_port_sync_master(crtc_state) ||
+		is_trans_port_sync_slave(crtc_state);
+}
+
+static enum pipe bigjoiner_master_pipe(const struct intel_crtc_state *crtc_state)
+{
+	return ffs(crtc_state->bigjoiner_pipes) - 1;
+}
+
+u8 intel_crtc_bigjoiner_slave_pipes(const struct intel_crtc_state *crtc_state)
+{
+	if (crtc_state->bigjoiner_pipes)
+		return crtc_state->bigjoiner_pipes & ~BIT(bigjoiner_master_pipe(crtc_state));
+	else
+		return 0;
+}
+
+bool intel_crtc_is_bigjoiner_slave(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+
+	return crtc_state->bigjoiner_pipes &&
+		crtc->pipe != bigjoiner_master_pipe(crtc_state);
+}
+
+bool intel_crtc_is_bigjoiner_master(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+
+	return crtc_state->bigjoiner_pipes &&
+		crtc->pipe == bigjoiner_master_pipe(crtc_state);
+}
+
+static int intel_bigjoiner_num_pipes(const struct intel_crtc_state *crtc_state)
+{
+	return hweight8(crtc_state->bigjoiner_pipes);
+}
+
+struct intel_crtc *intel_master_crtc(const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+
+	if (intel_crtc_is_bigjoiner_slave(crtc_state))
+		return intel_crtc_for_pipe(i915, bigjoiner_master_pipe(crtc_state));
+	else
+		return to_intel_crtc(crtc_state->uapi.crtc);
+}
+
+static bool pipe_scanline_is_moving(struct drm_i915_private *dev_priv,
+				    enum pipe pipe)
+{
+	i915_reg_t reg = PIPEDSL(pipe);
+	u32 line1, line2;
+
+	line1 = intel_de_read(dev_priv, reg) & PIPEDSL_LINE_MASK;
+	msleep(5);
+	line2 = intel_de_read(dev_priv, reg) & PIPEDSL_LINE_MASK;
+
+	return line1 != line2;
+}
+
+static void wait_for_pipe_scanline_moving(struct intel_crtc *crtc, bool state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+
+	/* Wait for the display line to settle/start moving */
+	if (wait_for(pipe_scanline_is_moving(dev_priv, pipe) == state, 100))
+		drm_err(&dev_priv->drm,
+			"pipe %c scanline %s wait timed out\n",
+			pipe_name(pipe), str_on_off(state));
+}
+
+static void intel_wait_for_pipe_scanline_stopped(struct intel_crtc *crtc)
+{
+	wait_for_pipe_scanline_moving(crtc, false);
+}
+
+static void intel_wait_for_pipe_scanline_moving(struct intel_crtc *crtc)
+{
+	wait_for_pipe_scanline_moving(crtc, true);
+}
+
+static void
+intel_wait_for_pipe_off(const struct intel_crtc_state *old_crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+
+	if (DISPLAY_VER(dev_priv) >= 4) {
+		enum transcoder cpu_transcoder = old_crtc_state->cpu_transcoder;
+
+		/* Wait for the Pipe State to go off */
+		if (intel_de_wait_for_clear(dev_priv, PIPECONF(cpu_transcoder),
+					    PIPECONF_STATE_ENABLE, 100))
+			drm_WARN(&dev_priv->drm, 1, "pipe_off wait timed out\n");
+	} else {
+		intel_wait_for_pipe_scanline_stopped(crtc);
+	}
+}
+
+void assert_transcoder(struct drm_i915_private *dev_priv,
+		       enum transcoder cpu_transcoder, bool state)
+{
+	bool cur_state;
+	enum intel_display_power_domain power_domain;
+	intel_wakeref_t wakeref;
+
+	/* we keep both pipes enabled on 830 */
+	if (IS_I830(dev_priv))
+		state = true;
+
+	power_domain = POWER_DOMAIN_TRANSCODER(cpu_transcoder);
+	wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
+	if (wakeref) {
+		u32 val = intel_de_read(dev_priv, PIPECONF(cpu_transcoder));
+		cur_state = !!(val & PIPECONF_ENABLE);
+
+		intel_display_power_put(dev_priv, power_domain, wakeref);
+	} else {
+		cur_state = false;
+	}
+
+	I915_STATE_WARN(cur_state != state,
+			"transcoder %s assertion failure (expected %s, current %s)\n",
+			transcoder_name(cpu_transcoder),
+			str_on_off(state), str_on_off(cur_state));
+}
+
+static void assert_plane(struct intel_plane *plane, bool state)
+{
+	enum pipe pipe;
+	bool cur_state;
+
+	cur_state = plane->get_hw_state(plane, &pipe);
+
+	I915_STATE_WARN(cur_state != state,
+			"%s assertion failure (expected %s, current %s)\n",
+			plane->base.name, str_on_off(state),
+			str_on_off(cur_state));
+}
+
+#define assert_plane_enabled(p) assert_plane(p, true)
+#define assert_plane_disabled(p) assert_plane(p, false)
+
+static void assert_planes_disabled(struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	struct intel_plane *plane;
+
+	for_each_intel_plane_on_crtc(&dev_priv->drm, crtc, plane)
+		assert_plane_disabled(plane);
+}
+
+void vlv_wait_port_ready(struct drm_i915_private *dev_priv,
+			 struct intel_digital_port *dig_port,
+			 unsigned int expected_mask)
+{
+	u32 port_mask;
+	i915_reg_t dpll_reg;
+
+	switch (dig_port->base.port) {
+	default:
+		MISSING_CASE(dig_port->base.port);
+		fallthrough;
+	case PORT_B:
+		port_mask = DPLL_PORTB_READY_MASK;
+		dpll_reg = DPLL(0);
+		break;
+	case PORT_C:
+		port_mask = DPLL_PORTC_READY_MASK;
+		dpll_reg = DPLL(0);
+		expected_mask <<= 4;
+		break;
+	case PORT_D:
+		port_mask = DPLL_PORTD_READY_MASK;
+		dpll_reg = DPIO_PHY_STATUS;
+		break;
+	}
+
+	if (intel_de_wait_for_register(dev_priv, dpll_reg,
+				       port_mask, expected_mask, 1000))
+		drm_WARN(&dev_priv->drm, 1,
+			 "timed out waiting for [ENCODER:%d:%s] port ready: got 0x%x, expected 0x%x\n",
+			 dig_port->base.base.base.id, dig_port->base.base.name,
+			 intel_de_read(dev_priv, dpll_reg) & port_mask,
+			 expected_mask);
+}
+
+void intel_enable_transcoder(const struct intel_crtc_state *new_crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum transcoder cpu_transcoder = new_crtc_state->cpu_transcoder;
+	enum pipe pipe = crtc->pipe;
+	i915_reg_t reg;
+	u32 val;
+
+	drm_dbg_kms(&dev_priv->drm, "enabling pipe %c\n", pipe_name(pipe));
+
+	assert_planes_disabled(crtc);
+
+	/*
+	 * A pipe without a PLL won't actually be able to drive bits from
+	 * a plane.  On ILK+ the pipe PLLs are integrated, so we don't
+	 * need the check.
+	 */
+	if (HAS_GMCH(dev_priv)) {
+		if (intel_crtc_has_type(new_crtc_state, INTEL_OUTPUT_DSI))
+			assert_dsi_pll_enabled(dev_priv);
+		else
+			assert_pll_enabled(dev_priv, pipe);
+	} else {
+		if (new_crtc_state->has_pch_encoder) {
+			/* if driving the PCH, we need FDI enabled */
+			assert_fdi_rx_pll_enabled(dev_priv,
+						  intel_crtc_pch_transcoder(crtc));
+			assert_fdi_tx_pll_enabled(dev_priv,
+						  (enum pipe) cpu_transcoder);
+		}
+		/* FIXME: assert CPU port conditions for SNB+ */
+	}
+
+	/* Wa_22012358565:adl-p */
+	if (DISPLAY_VER(dev_priv) == 13)
+		intel_de_rmw(dev_priv, PIPE_ARB_CTL(pipe),
+			     0, PIPE_ARB_USE_PROG_SLOTS);
+
+	reg = PIPECONF(cpu_transcoder);
+	val = intel_de_read(dev_priv, reg);
+	if (val & PIPECONF_ENABLE) {
+		/* we keep both pipes enabled on 830 */
+		drm_WARN_ON(&dev_priv->drm, !IS_I830(dev_priv));
+		return;
+	}
+
+	intel_de_write(dev_priv, reg, val | PIPECONF_ENABLE);
+	intel_de_posting_read(dev_priv, reg);
+
+	/*
+	 * Until the pipe starts PIPEDSL reads will return a stale value,
+	 * which causes an apparent vblank timestamp jump when PIPEDSL
+	 * resets to its proper value. That also messes up the frame count
+	 * when it's derived from the timestamps. So let's wait for the
+	 * pipe to start properly before we call drm_crtc_vblank_on()
+	 */
+	if (intel_crtc_max_vblank_count(new_crtc_state) == 0)
+		intel_wait_for_pipe_scanline_moving(crtc);
+}
+
+void intel_disable_transcoder(const struct intel_crtc_state *old_crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum transcoder cpu_transcoder = old_crtc_state->cpu_transcoder;
+	enum pipe pipe = crtc->pipe;
+	i915_reg_t reg;
+	u32 val;
+
+	drm_dbg_kms(&dev_priv->drm, "disabling pipe %c\n", pipe_name(pipe));
+
+	/*
+	 * Make sure planes won't keep trying to pump pixels to us,
+	 * or we might hang the display.
+	 */
+	assert_planes_disabled(crtc);
+
+	reg = PIPECONF(cpu_transcoder);
+	val = intel_de_read(dev_priv, reg);
+	if ((val & PIPECONF_ENABLE) == 0)
+		return;
+
+	/*
+	 * Double wide has implications for planes
+	 * so best keep it disabled when not needed.
+	 */
+	if (old_crtc_state->double_wide)
+		val &= ~PIPECONF_DOUBLE_WIDE;
+
+	/* Don't disable pipe or pipe PLLs if needed */
+	if (!IS_I830(dev_priv))
+		val &= ~PIPECONF_ENABLE;
+
+	if (DISPLAY_VER(dev_priv) >= 14)
+		intel_de_rmw(dev_priv, MTL_CHICKEN_TRANS(cpu_transcoder),
+			     FECSTALL_DIS_DPTSTREAM_DPTTG, 0);
+	else if (DISPLAY_VER(dev_priv) >= 12)
+		intel_de_rmw(dev_priv, CHICKEN_TRANS(cpu_transcoder),
+			     FECSTALL_DIS_DPTSTREAM_DPTTG, 0);
+
+	intel_de_write(dev_priv, reg, val);
+	if ((val & PIPECONF_ENABLE) == 0)
+		intel_wait_for_pipe_off(old_crtc_state);
+}
+
+unsigned int intel_rotation_info_size(const struct intel_rotation_info *rot_info)
+{
+	unsigned int size = 0;
+	int i;
+
+	for (i = 0 ; i < ARRAY_SIZE(rot_info->plane); i++)
+		size += rot_info->plane[i].dst_stride * rot_info->plane[i].width;
+
+	return size;
+}
+
+unsigned int intel_remapped_info_size(const struct intel_remapped_info *rem_info)
+{
+	unsigned int size = 0;
+	int i;
+
+	for (i = 0 ; i < ARRAY_SIZE(rem_info->plane); i++) {
+		unsigned int plane_size;
+
+		if (rem_info->plane[i].linear)
+			plane_size = rem_info->plane[i].size;
+		else
+			plane_size = rem_info->plane[i].dst_stride * rem_info->plane[i].height;
+
+		if (plane_size == 0)
+			continue;
+
+		if (rem_info->plane_alignment)
+			size = ALIGN(size, rem_info->plane_alignment);
+
+		size += plane_size;
+	}
+
+	return size;
+}
+
+bool intel_plane_uses_fence(const struct intel_plane_state *plane_state)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+
+	return DISPLAY_VER(dev_priv) < 4 ||
+		(plane->fbc &&
+		 plane_state->view.gtt.type == I915_GTT_VIEW_NORMAL);
+}
+
+/*
+ * Convert the x/y offsets into a linear offset.
+ * Only valid with 0/180 degree rotation, which is fine since linear
+ * offset is only used with linear buffers on pre-hsw and tiled buffers
+ * with gen2/3, and 90/270 degree rotations isn't supported on any of them.
+ */
+u32 intel_fb_xy_to_linear(int x, int y,
+			  const struct intel_plane_state *state,
+			  int color_plane)
+{
+	const struct drm_framebuffer *fb = state->hw.fb;
+	unsigned int cpp = fb->format->cpp[color_plane];
+	unsigned int pitch = state->view.color_plane[color_plane].mapping_stride;
+
+	return y * pitch + x * cpp;
+}
+
+/*
+ * Add the x/y offsets derived from fb->offsets[] to the user
+ * specified plane src x/y offsets. The resulting x/y offsets
+ * specify the start of scanout from the beginning of the gtt mapping.
+ */
+void intel_add_fb_offsets(int *x, int *y,
+			  const struct intel_plane_state *state,
+			  int color_plane)
+
+{
+	*x += state->view.color_plane[color_plane].x;
+	*y += state->view.color_plane[color_plane].y;
+}
+
+u32 intel_plane_fb_max_stride(struct drm_i915_private *dev_priv,
+			      u32 pixel_format, u64 modifier)
+{
+	struct intel_crtc *crtc;
+	struct intel_plane *plane;
+
+	if (!HAS_DISPLAY(dev_priv))
+		return 0;
+
+	/*
+	 * We assume the primary plane for pipe A has
+	 * the highest stride limits of them all,
+	 * if in case pipe A is disabled, use the first pipe from pipe_mask.
+	 */
+	crtc = intel_first_crtc(dev_priv);
+	if (!crtc)
+		return 0;
+
+	plane = to_intel_plane(crtc->base.primary);
+
+	return plane->max_stride(plane, pixel_format, modifier,
+				 DRM_MODE_ROTATE_0);
+}
+
+void intel_set_plane_visible(struct intel_crtc_state *crtc_state,
+			     struct intel_plane_state *plane_state,
+			     bool visible)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+
+	plane_state->uapi.visible = visible;
+
+	if (visible)
+		crtc_state->uapi.plane_mask |= drm_plane_mask(&plane->base);
+	else
+		crtc_state->uapi.plane_mask &= ~drm_plane_mask(&plane->base);
+}
+
+void intel_plane_fixup_bitmasks(struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+	struct drm_plane *plane;
+
+	/*
+	 * Active_planes aliases if multiple "primary" or cursor planes
+	 * have been used on the same (or wrong) pipe. plane_mask uses
+	 * unique ids, hence we can use that to reconstruct active_planes.
+	 */
+	crtc_state->enabled_planes = 0;
+	crtc_state->active_planes = 0;
+
+	drm_for_each_plane_mask(plane, &dev_priv->drm,
+				crtc_state->uapi.plane_mask) {
+		crtc_state->enabled_planes |= BIT(to_intel_plane(plane)->id);
+		crtc_state->active_planes |= BIT(to_intel_plane(plane)->id);
+	}
+}
+
+void intel_plane_disable_noatomic(struct intel_crtc *crtc,
+				  struct intel_plane *plane)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	struct intel_crtc_state *crtc_state =
+		to_intel_crtc_state(crtc->base.state);
+	struct intel_plane_state *plane_state =
+		to_intel_plane_state(plane->base.state);
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "Disabling [PLANE:%d:%s] on [CRTC:%d:%s]\n",
+		    plane->base.base.id, plane->base.name,
+		    crtc->base.base.id, crtc->base.name);
+
+	intel_set_plane_visible(crtc_state, plane_state, false);
+	intel_plane_fixup_bitmasks(crtc_state);
+	crtc_state->data_rate[plane->id] = 0;
+	crtc_state->data_rate_y[plane->id] = 0;
+	crtc_state->rel_data_rate[plane->id] = 0;
+	crtc_state->rel_data_rate_y[plane->id] = 0;
+	crtc_state->min_cdclk[plane->id] = 0;
+
+	if ((crtc_state->active_planes & ~BIT(PLANE_CURSOR)) == 0 &&
+	    hsw_ips_disable(crtc_state)) {
+		crtc_state->ips_enabled = false;
+		intel_crtc_wait_for_next_vblank(crtc);
+	}
+
+	/*
+	 * Vblank time updates from the shadow to live plane control register
+	 * are blocked if the memory self-refresh mode is active at that
+	 * moment. So to make sure the plane gets truly disabled, disable
+	 * first the self-refresh mode. The self-refresh enable bit in turn
+	 * will be checked/applied by the HW only at the next frame start
+	 * event which is after the vblank start event, so we need to have a
+	 * wait-for-vblank between disabling the plane and the pipe.
+	 */
+	if (HAS_GMCH(dev_priv) &&
+	    intel_set_memory_cxsr(dev_priv, false))
+		intel_crtc_wait_for_next_vblank(crtc);
+
+	/*
+	 * Gen2 reports pipe underruns whenever all planes are disabled.
+	 * So disable underrun reporting before all the planes get disabled.
+	 */
+	if (DISPLAY_VER(dev_priv) == 2 && !crtc_state->active_planes)
+		intel_set_cpu_fifo_underrun_reporting(dev_priv, crtc->pipe, false);
+
+	intel_plane_disable_arm(plane, crtc_state);
+	intel_crtc_wait_for_next_vblank(crtc);
+}
+
+unsigned int
+intel_plane_fence_y_offset(const struct intel_plane_state *plane_state)
+{
+	int x = 0, y = 0;
+
+	intel_plane_adjust_aligned_offset(&x, &y, plane_state, 0,
+					  plane_state->view.color_plane[0].offset, 0);
+
+	return y;
+}
+
+static int
+__intel_display_resume(struct drm_i915_private *i915,
+		       struct drm_atomic_state *state,
+		       struct drm_modeset_acquire_ctx *ctx)
+{
+	struct drm_crtc_state *crtc_state;
+	struct drm_crtc *crtc;
+	int i, ret;
+
+	intel_modeset_setup_hw_state(i915, ctx);
+	intel_vga_redisable(i915);
+
+	if (!state)
+		return 0;
+
+	/*
+	 * We've duplicated the state, pointers to the old state are invalid.
+	 *
+	 * Don't attempt to use the old state until we commit the duplicated state.
+	 */
+	for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
+		/*
+		 * Force recalculation even if we restore
+		 * current state. With fast modeset this may not result
+		 * in a modeset when the state is compatible.
+		 */
+		crtc_state->mode_changed = true;
+	}
+
+	/* ignore any reset values/BIOS leftovers in the WM registers */
+	if (!HAS_GMCH(i915))
+		to_intel_atomic_state(state)->skip_intermediate_wm = true;
+
+	ret = drm_atomic_helper_commit_duplicated_state(state, ctx);
+
+	drm_WARN_ON(&i915->drm, ret == -EDEADLK);
+
+	return ret;
+}
+
+static bool gpu_reset_clobbers_display(struct drm_i915_private *dev_priv)
+{
+	return (INTEL_INFO(dev_priv)->gpu_reset_clobbers_display &&
+		intel_has_gpu_reset(to_gt(dev_priv)));
+}
+
+void intel_display_prepare_reset(struct drm_i915_private *dev_priv)
+{
+	struct drm_device *dev = &dev_priv->drm;
+	struct drm_modeset_acquire_ctx *ctx = &dev_priv->reset_ctx;
+	struct drm_atomic_state *state;
+	int ret;
+
+	if (!HAS_DISPLAY(dev_priv))
+		return;
+
+	/* reset doesn't touch the display */
+	if (!dev_priv->params.force_reset_modeset_test &&
+	    !gpu_reset_clobbers_display(dev_priv))
+		return;
+
+	/* We have a modeset vs reset deadlock, defensively unbreak it. */
+	set_bit(I915_RESET_MODESET, &to_gt(dev_priv)->reset.flags);
+	smp_mb__after_atomic();
+	wake_up_bit(&to_gt(dev_priv)->reset.flags, I915_RESET_MODESET);
+
+	if (atomic_read(&dev_priv->gpu_error.pending_fb_pin)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Modeset potentially stuck, unbreaking through wedging\n");
+		intel_gt_set_wedged(to_gt(dev_priv));
+	}
+
+	/*
+	 * Need mode_config.mutex so that we don't
+	 * trample ongoing ->detect() and whatnot.
+	 */
+	mutex_lock(&dev->mode_config.mutex);
+	drm_modeset_acquire_init(ctx, 0);
+	while (1) {
+		ret = drm_modeset_lock_all_ctx(dev, ctx);
+		if (ret != -EDEADLK)
+			break;
+
+		drm_modeset_backoff(ctx);
+	}
+	/*
+	 * Disabling the crtcs gracefully seems nicer. Also the
+	 * g33 docs say we should at least disable all the planes.
+	 */
+	state = drm_atomic_helper_duplicate_state(dev, ctx);
+	if (IS_ERR(state)) {
+		ret = PTR_ERR(state);
+		drm_err(&dev_priv->drm, "Duplicating state failed with %i\n",
+			ret);
+		return;
+	}
+
+	ret = drm_atomic_helper_disable_all(dev, ctx);
+	if (ret) {
+		drm_err(&dev_priv->drm, "Suspending crtc's failed with %i\n",
+			ret);
+		drm_atomic_state_put(state);
+		return;
+	}
+
+	dev_priv->modeset_restore_state = state;
+	state->acquire_ctx = ctx;
+}
+
+void intel_display_finish_reset(struct drm_i915_private *i915)
+{
+	struct drm_modeset_acquire_ctx *ctx = &i915->reset_ctx;
+	struct drm_atomic_state *state;
+	int ret;
+
+	if (!HAS_DISPLAY(i915))
+		return;
+
+	/* reset doesn't touch the display */
+	if (!test_bit(I915_RESET_MODESET, &to_gt(i915)->reset.flags))
+		return;
+
+	state = fetch_and_zero(&i915->modeset_restore_state);
+	if (!state)
+		goto unlock;
+
+	/* reset doesn't touch the display */
+	if (!gpu_reset_clobbers_display(i915)) {
+		/* for testing only restore the display */
+		ret = __intel_display_resume(i915, state, ctx);
+		if (ret)
+			drm_err(&i915->drm,
+				"Restoring old state failed with %i\n", ret);
+	} else {
+		/*
+		 * The display has been reset as well,
+		 * so need a full re-initialization.
+		 */
+		intel_pps_unlock_regs_wa(i915);
+		intel_modeset_init_hw(i915);
+		intel_init_clock_gating(i915);
+		intel_hpd_init(i915);
+
+		ret = __intel_display_resume(i915, state, ctx);
+		if (ret)
+			drm_err(&i915->drm,
+				"Restoring old state failed with %i\n", ret);
+
+		intel_hpd_poll_disable(i915);
+	}
+
+	drm_atomic_state_put(state);
+unlock:
+	drm_modeset_drop_locks(ctx);
+	drm_modeset_acquire_fini(ctx);
+	mutex_unlock(&i915->drm.mode_config.mutex);
+
+	clear_bit_unlock(I915_RESET_MODESET, &to_gt(i915)->reset.flags);
+}
+
+static void icl_set_pipe_chicken(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+	u32 tmp;
+
+	tmp = intel_de_read(dev_priv, PIPE_CHICKEN(pipe));
+
+	/*
+	 * Display WA #1153: icl
+	 * enable hardware to bypass the alpha math
+	 * and rounding for per-pixel values 00 and 0xff
+	 */
+	tmp |= PER_PIXEL_ALPHA_BYPASS_EN;
+	/*
+	 * Display WA # 1605353570: icl
+	 * Set the pixel rounding bit to 1 for allowing
+	 * passthrough of Frame buffer pixels unmodified
+	 * across pipe
+	 */
+	tmp |= PIXEL_ROUNDING_TRUNC_FB_PASSTHRU;
+
+	/*
+	 * Underrun recovery must always be disabled on display 13+.
+	 * DG2 chicken bit meaning is inverted compared to other platforms.
+	 */
+	if (IS_DG2(dev_priv))
+		tmp &= ~UNDERRUN_RECOVERY_ENABLE_DG2;
+	else if (DISPLAY_VER(dev_priv) >= 13)
+		tmp |= UNDERRUN_RECOVERY_DISABLE_ADLP;
+
+	/* Wa_14010547955:dg2 */
+	if (IS_DG2_DISPLAY_STEP(dev_priv, STEP_B0, STEP_FOREVER))
+		tmp |= DG2_RENDER_CCSTAG_4_3_EN;
+
+	intel_de_write(dev_priv, PIPE_CHICKEN(pipe), tmp);
+}
+
+bool intel_has_pending_fb_unpin(struct drm_i915_private *dev_priv)
+{
+	struct drm_crtc *crtc;
+	bool cleanup_done;
+
+	drm_for_each_crtc(crtc, &dev_priv->drm) {
+		struct drm_crtc_commit *commit;
+		spin_lock(&crtc->commit_lock);
+		commit = list_first_entry_or_null(&crtc->commit_list,
+						  struct drm_crtc_commit, commit_entry);
+		cleanup_done = commit ?
+			try_wait_for_completion(&commit->cleanup_done) : true;
+		spin_unlock(&crtc->commit_lock);
+
+		if (cleanup_done)
+			continue;
+
+		intel_crtc_wait_for_next_vblank(to_intel_crtc(crtc));
+
+		return true;
+	}
+
+	return false;
+}
+
+/*
+ * Finds the encoder associated with the given CRTC. This can only be
+ * used when we know that the CRTC isn't feeding multiple encoders!
+ */
+struct intel_encoder *
+intel_get_crtc_new_encoder(const struct intel_atomic_state *state,
+			   const struct intel_crtc_state *crtc_state)
+{
+	const struct drm_connector_state *connector_state;
+	const struct drm_connector *connector;
+	struct intel_encoder *encoder = NULL;
+	struct intel_crtc *master_crtc;
+	int num_encoders = 0;
+	int i;
+
+	master_crtc = intel_master_crtc(crtc_state);
+
+	for_each_new_connector_in_state(&state->base, connector, connector_state, i) {
+		if (connector_state->crtc != &master_crtc->base)
+			continue;
+
+		encoder = to_intel_encoder(connector_state->best_encoder);
+		num_encoders++;
+	}
+
+	drm_WARN(state->base.dev, num_encoders != 1,
+		 "%d encoders for pipe %c\n",
+		 num_encoders, pipe_name(master_crtc->pipe));
+
+	return encoder;
+}
+
+static void cpt_verify_modeset(struct drm_i915_private *dev_priv,
+			       enum pipe pipe)
+{
+	i915_reg_t dslreg = PIPEDSL(pipe);
+	u32 temp;
+
+	temp = intel_de_read(dev_priv, dslreg);
+	udelay(500);
+	if (wait_for(intel_de_read(dev_priv, dslreg) != temp, 5)) {
+		if (wait_for(intel_de_read(dev_priv, dslreg) != temp, 5))
+			drm_err(&dev_priv->drm,
+				"mode set failed: pipe %c stuck\n",
+				pipe_name(pipe));
+	}
+}
+
+static void ilk_pfit_enable(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	const struct drm_rect *dst = &crtc_state->pch_pfit.dst;
+	enum pipe pipe = crtc->pipe;
+	int width = drm_rect_width(dst);
+	int height = drm_rect_height(dst);
+	int x = dst->x1;
+	int y = dst->y1;
+
+	if (!crtc_state->pch_pfit.enabled)
+		return;
+
+	/* Force use of hard-coded filter coefficients
+	 * as some pre-programmed values are broken,
+	 * e.g. x201.
+	 */
+	if (IS_IVYBRIDGE(dev_priv) || IS_HASWELL(dev_priv))
+		intel_de_write_fw(dev_priv, PF_CTL(pipe), PF_ENABLE |
+				  PF_FILTER_MED_3x3 | PF_PIPE_SEL_IVB(pipe));
+	else
+		intel_de_write_fw(dev_priv, PF_CTL(pipe), PF_ENABLE |
+				  PF_FILTER_MED_3x3);
+	intel_de_write_fw(dev_priv, PF_WIN_POS(pipe), x << 16 | y);
+	intel_de_write_fw(dev_priv, PF_WIN_SZ(pipe), width << 16 | height);
+}
+
+static void intel_crtc_dpms_overlay_disable(struct intel_crtc *crtc)
+{
+	if (crtc->overlay)
+		(void) intel_overlay_switch_off(crtc->overlay);
+
+	/* Let userspace switch the overlay on again. In most cases userspace
+	 * has to recompute where to put it anyway.
+	 */
+}
+
+static bool needs_nv12_wa(const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+
+	if (!crtc_state->nv12_planes)
+		return false;
+
+	/* WA Display #0827: Gen9:all */
+	if (DISPLAY_VER(dev_priv) == 9)
+		return true;
+
+	return false;
+}
+
+static bool needs_scalerclk_wa(const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+
+	/* Wa_2006604312:icl,ehl */
+	if (crtc_state->scaler_state.scaler_users > 0 && DISPLAY_VER(dev_priv) == 11)
+		return true;
+
+	return false;
+}
+
+static bool needs_cursorclk_wa(const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+
+	/* Wa_1604331009:icl,jsl,ehl */
+	if (is_hdr_mode(crtc_state) &&
+	    crtc_state->active_planes & BIT(PLANE_CURSOR) &&
+	    DISPLAY_VER(dev_priv) == 11)
+		return true;
+
+	return false;
+}
+
+static void intel_async_flip_vtd_wa(struct drm_i915_private *i915,
+				    enum pipe pipe, bool enable)
+{
+	if (DISPLAY_VER(i915) == 9) {
+		/*
+		 * "Plane N strech max must be programmed to 11b (x1)
+		 *  when Async flips are enabled on that plane."
+		 */
+		intel_de_rmw(i915, CHICKEN_PIPESL_1(pipe),
+			     SKL_PLANE1_STRETCH_MAX_MASK,
+			     enable ? SKL_PLANE1_STRETCH_MAX_X1 : SKL_PLANE1_STRETCH_MAX_X8);
+	} else {
+		/* Also needed on HSW/BDW albeit undocumented */
+		intel_de_rmw(i915, CHICKEN_PIPESL_1(pipe),
+			     HSW_PRI_STRETCH_MAX_MASK,
+			     enable ? HSW_PRI_STRETCH_MAX_X1 : HSW_PRI_STRETCH_MAX_X8);
+	}
+}
+
+static bool needs_async_flip_vtd_wa(const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+
+	return crtc_state->uapi.async_flip && i915_vtd_active(i915) &&
+		(DISPLAY_VER(i915) == 9 || IS_BROADWELL(i915) || IS_HASWELL(i915));
+}
+
+static bool planes_enabling(const struct intel_crtc_state *old_crtc_state,
+			    const struct intel_crtc_state *new_crtc_state)
+{
+	return (!old_crtc_state->active_planes || intel_crtc_needs_modeset(new_crtc_state)) &&
+		new_crtc_state->active_planes;
+}
+
+static bool planes_disabling(const struct intel_crtc_state *old_crtc_state,
+			     const struct intel_crtc_state *new_crtc_state)
+{
+	return old_crtc_state->active_planes &&
+		(!new_crtc_state->active_planes || intel_crtc_needs_modeset(new_crtc_state));
+}
+
+static void intel_post_plane_update(struct intel_atomic_state *state,
+				    struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	const struct intel_crtc_state *old_crtc_state =
+		intel_atomic_get_old_crtc_state(state, crtc);
+	const struct intel_crtc_state *new_crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	enum pipe pipe = crtc->pipe;
+
+	intel_frontbuffer_flip(dev_priv, new_crtc_state->fb_bits);
+
+	if (new_crtc_state->update_wm_post && new_crtc_state->hw.active)
+		intel_update_watermarks(dev_priv);
+
+	hsw_ips_post_update(state, crtc);
+	intel_fbc_post_update(state, crtc);
+
+	if (needs_async_flip_vtd_wa(old_crtc_state) &&
+	    !needs_async_flip_vtd_wa(new_crtc_state))
+		intel_async_flip_vtd_wa(dev_priv, pipe, false);
+
+	if (needs_nv12_wa(old_crtc_state) &&
+	    !needs_nv12_wa(new_crtc_state))
+		skl_wa_827(dev_priv, pipe, false);
+
+	if (needs_scalerclk_wa(old_crtc_state) &&
+	    !needs_scalerclk_wa(new_crtc_state))
+		icl_wa_scalerclkgating(dev_priv, pipe, false);
+
+	if (needs_cursorclk_wa(old_crtc_state) &&
+	    !needs_cursorclk_wa(new_crtc_state))
+		icl_wa_cursorclkgating(dev_priv, pipe, false);
+
+	intel_drrs_activate(new_crtc_state);
+}
+
+static void intel_crtc_enable_flip_done(struct intel_atomic_state *state,
+					struct intel_crtc *crtc)
+{
+	const struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	u8 update_planes = crtc_state->update_planes;
+	const struct intel_plane_state *plane_state;
+	struct intel_plane *plane;
+	int i;
+
+	for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
+		if (plane->pipe == crtc->pipe &&
+		    update_planes & BIT(plane->id))
+			plane->enable_flip_done(plane);
+	}
+}
+
+static void intel_crtc_disable_flip_done(struct intel_atomic_state *state,
+					 struct intel_crtc *crtc)
+{
+	const struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	u8 update_planes = crtc_state->update_planes;
+	const struct intel_plane_state *plane_state;
+	struct intel_plane *plane;
+	int i;
+
+	for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
+		if (plane->pipe == crtc->pipe &&
+		    update_planes & BIT(plane->id))
+			plane->disable_flip_done(plane);
+	}
+}
+
+static void intel_crtc_async_flip_disable_wa(struct intel_atomic_state *state,
+					     struct intel_crtc *crtc)
+{
+	const struct intel_crtc_state *old_crtc_state =
+		intel_atomic_get_old_crtc_state(state, crtc);
+	const struct intel_crtc_state *new_crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	u8 update_planes = new_crtc_state->update_planes;
+	const struct intel_plane_state *old_plane_state;
+	struct intel_plane *plane;
+	bool need_vbl_wait = false;
+	int i;
+
+	for_each_old_intel_plane_in_state(state, plane, old_plane_state, i) {
+		if (plane->need_async_flip_disable_wa &&
+		    plane->pipe == crtc->pipe &&
+		    update_planes & BIT(plane->id)) {
+			/*
+			 * Apart from the async flip bit we want to
+			 * preserve the old state for the plane.
+			 */
+			plane->async_flip(plane, old_crtc_state,
+					  old_plane_state, false);
+			need_vbl_wait = true;
+		}
+	}
+
+	if (need_vbl_wait)
+		intel_crtc_wait_for_next_vblank(crtc);
+}
+
+static void intel_pre_plane_update(struct intel_atomic_state *state,
+				   struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	const struct intel_crtc_state *old_crtc_state =
+		intel_atomic_get_old_crtc_state(state, crtc);
+	const struct intel_crtc_state *new_crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	enum pipe pipe = crtc->pipe;
+
+	intel_drrs_deactivate(old_crtc_state);
+
+	intel_psr_pre_plane_update(state, crtc);
+
+	if (hsw_ips_pre_update(state, crtc))
+		intel_crtc_wait_for_next_vblank(crtc);
+
+	if (intel_fbc_pre_update(state, crtc))
+		intel_crtc_wait_for_next_vblank(crtc);
+
+	if (!needs_async_flip_vtd_wa(old_crtc_state) &&
+	    needs_async_flip_vtd_wa(new_crtc_state))
+		intel_async_flip_vtd_wa(dev_priv, pipe, true);
+
+	/* Display WA 827 */
+	if (!needs_nv12_wa(old_crtc_state) &&
+	    needs_nv12_wa(new_crtc_state))
+		skl_wa_827(dev_priv, pipe, true);
+
+	/* Wa_2006604312:icl,ehl */
+	if (!needs_scalerclk_wa(old_crtc_state) &&
+	    needs_scalerclk_wa(new_crtc_state))
+		icl_wa_scalerclkgating(dev_priv, pipe, true);
+
+	/* Wa_1604331009:icl,jsl,ehl */
+	if (!needs_cursorclk_wa(old_crtc_state) &&
+	    needs_cursorclk_wa(new_crtc_state))
+		icl_wa_cursorclkgating(dev_priv, pipe, true);
+
+	/*
+	 * Vblank time updates from the shadow to live plane control register
+	 * are blocked if the memory self-refresh mode is active at that
+	 * moment. So to make sure the plane gets truly disabled, disable
+	 * first the self-refresh mode. The self-refresh enable bit in turn
+	 * will be checked/applied by the HW only at the next frame start
+	 * event which is after the vblank start event, so we need to have a
+	 * wait-for-vblank between disabling the plane and the pipe.
+	 */
+	if (HAS_GMCH(dev_priv) && old_crtc_state->hw.active &&
+	    new_crtc_state->disable_cxsr && intel_set_memory_cxsr(dev_priv, false))
+		intel_crtc_wait_for_next_vblank(crtc);
+
+	/*
+	 * IVB workaround: must disable low power watermarks for at least
+	 * one frame before enabling scaling.  LP watermarks can be re-enabled
+	 * when scaling is disabled.
+	 *
+	 * WaCxSRDisabledForSpriteScaling:ivb
+	 */
+	if (old_crtc_state->hw.active &&
+	    new_crtc_state->disable_lp_wm && ilk_disable_lp_wm(dev_priv))
+		intel_crtc_wait_for_next_vblank(crtc);
+
+	/*
+	 * If we're doing a modeset we don't need to do any
+	 * pre-vblank watermark programming here.
+	 */
+	if (!intel_crtc_needs_modeset(new_crtc_state)) {
+		/*
+		 * For platforms that support atomic watermarks, program the
+		 * 'intermediate' watermarks immediately.  On pre-gen9 platforms, these
+		 * will be the intermediate values that are safe for both pre- and
+		 * post- vblank; when vblank happens, the 'active' values will be set
+		 * to the final 'target' values and we'll do this again to get the
+		 * optimal watermarks.  For gen9+ platforms, the values we program here
+		 * will be the final target values which will get automatically latched
+		 * at vblank time; no further programming will be necessary.
+		 *
+		 * If a platform hasn't been transitioned to atomic watermarks yet,
+		 * we'll continue to update watermarks the old way, if flags tell
+		 * us to.
+		 */
+		if (!intel_initial_watermarks(state, crtc))
+			if (new_crtc_state->update_wm_pre)
+				intel_update_watermarks(dev_priv);
+	}
+
+	/*
+	 * Gen2 reports pipe underruns whenever all planes are disabled.
+	 * So disable underrun reporting before all the planes get disabled.
+	 *
+	 * We do this after .initial_watermarks() so that we have a
+	 * chance of catching underruns with the intermediate watermarks
+	 * vs. the old plane configuration.
+	 */
+	if (DISPLAY_VER(dev_priv) == 2 && planes_disabling(old_crtc_state, new_crtc_state))
+		intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
+
+	/*
+	 * WA for platforms where async address update enable bit
+	 * is double buffered and only latched at start of vblank.
+	 */
+	if (old_crtc_state->uapi.async_flip && !new_crtc_state->uapi.async_flip)
+		intel_crtc_async_flip_disable_wa(state, crtc);
+}
+
+static void intel_crtc_disable_planes(struct intel_atomic_state *state,
+				      struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	const struct intel_crtc_state *new_crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	unsigned int update_mask = new_crtc_state->update_planes;
+	const struct intel_plane_state *old_plane_state;
+	struct intel_plane *plane;
+	unsigned fb_bits = 0;
+	int i;
+
+	intel_crtc_dpms_overlay_disable(crtc);
+
+	for_each_old_intel_plane_in_state(state, plane, old_plane_state, i) {
+		if (crtc->pipe != plane->pipe ||
+		    !(update_mask & BIT(plane->id)))
+			continue;
+
+		intel_plane_disable_arm(plane, new_crtc_state);
+
+		if (old_plane_state->uapi.visible)
+			fb_bits |= plane->frontbuffer_bit;
+	}
+
+	intel_frontbuffer_flip(dev_priv, fb_bits);
+}
+
+/*
+ * intel_connector_primary_encoder - get the primary encoder for a connector
+ * @connector: connector for which to return the encoder
+ *
+ * Returns the primary encoder for a connector. There is a 1:1 mapping from
+ * all connectors to their encoder, except for DP-MST connectors which have
+ * both a virtual and a primary encoder. These DP-MST primary encoders can be
+ * pointed to by as many DP-MST connectors as there are pipes.
+ */
+static struct intel_encoder *
+intel_connector_primary_encoder(struct intel_connector *connector)
+{
+	struct intel_encoder *encoder;
+
+	if (connector->mst_port)
+		return &dp_to_dig_port(connector->mst_port)->base;
+
+	encoder = intel_attached_encoder(connector);
+	drm_WARN_ON(connector->base.dev, !encoder);
+
+	return encoder;
+}
+
+static void intel_encoders_update_prepare(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	struct intel_crtc_state *new_crtc_state, *old_crtc_state;
+	struct intel_crtc *crtc;
+	struct drm_connector_state *new_conn_state;
+	struct drm_connector *connector;
+	int i;
+
+	/*
+	 * Make sure the DPLL state is up-to-date for fastset TypeC ports after non-blocking commits.
+	 * TODO: Update the DPLL state for all cases in the encoder->update_prepare() hook.
+	 */
+	if (i915->display.dpll.mgr) {
+		for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
+			if (intel_crtc_needs_modeset(new_crtc_state))
+				continue;
+
+			new_crtc_state->shared_dpll = old_crtc_state->shared_dpll;
+			new_crtc_state->dpll_hw_state = old_crtc_state->dpll_hw_state;
+		}
+	}
+
+	if (!state->modeset)
+		return;
+
+	for_each_new_connector_in_state(&state->base, connector, new_conn_state,
+					i) {
+		struct intel_connector *intel_connector;
+		struct intel_encoder *encoder;
+		struct intel_crtc *crtc;
+
+		if (!intel_connector_needs_modeset(state, connector))
+			continue;
+
+		intel_connector = to_intel_connector(connector);
+		encoder = intel_connector_primary_encoder(intel_connector);
+		if (!encoder->update_prepare)
+			continue;
+
+		crtc = new_conn_state->crtc ?
+			to_intel_crtc(new_conn_state->crtc) : NULL;
+		encoder->update_prepare(state, encoder, crtc);
+	}
+}
+
+static void intel_encoders_update_complete(struct intel_atomic_state *state)
+{
+	struct drm_connector_state *new_conn_state;
+	struct drm_connector *connector;
+	int i;
+
+	if (!state->modeset)
+		return;
+
+	for_each_new_connector_in_state(&state->base, connector, new_conn_state,
+					i) {
+		struct intel_connector *intel_connector;
+		struct intel_encoder *encoder;
+		struct intel_crtc *crtc;
+
+		if (!intel_connector_needs_modeset(state, connector))
+			continue;
+
+		intel_connector = to_intel_connector(connector);
+		encoder = intel_connector_primary_encoder(intel_connector);
+		if (!encoder->update_complete)
+			continue;
+
+		crtc = new_conn_state->crtc ?
+			to_intel_crtc(new_conn_state->crtc) : NULL;
+		encoder->update_complete(state, encoder, crtc);
+	}
+}
+
+static void intel_encoders_pre_pll_enable(struct intel_atomic_state *state,
+					  struct intel_crtc *crtc)
+{
+	const struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	const struct drm_connector_state *conn_state;
+	struct drm_connector *conn;
+	int i;
+
+	for_each_new_connector_in_state(&state->base, conn, conn_state, i) {
+		struct intel_encoder *encoder =
+			to_intel_encoder(conn_state->best_encoder);
+
+		if (conn_state->crtc != &crtc->base)
+			continue;
+
+		if (encoder->pre_pll_enable)
+			encoder->pre_pll_enable(state, encoder,
+						crtc_state, conn_state);
+	}
+}
+
+static void intel_encoders_pre_enable(struct intel_atomic_state *state,
+				      struct intel_crtc *crtc)
+{
+	const struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	const struct drm_connector_state *conn_state;
+	struct drm_connector *conn;
+	int i;
+
+	for_each_new_connector_in_state(&state->base, conn, conn_state, i) {
+		struct intel_encoder *encoder =
+			to_intel_encoder(conn_state->best_encoder);
+
+		if (conn_state->crtc != &crtc->base)
+			continue;
+
+		if (encoder->pre_enable)
+			encoder->pre_enable(state, encoder,
+					    crtc_state, conn_state);
+	}
+}
+
+static void intel_encoders_enable(struct intel_atomic_state *state,
+				  struct intel_crtc *crtc)
+{
+	const struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	const struct drm_connector_state *conn_state;
+	struct drm_connector *conn;
+	int i;
+
+	for_each_new_connector_in_state(&state->base, conn, conn_state, i) {
+		struct intel_encoder *encoder =
+			to_intel_encoder(conn_state->best_encoder);
+
+		if (conn_state->crtc != &crtc->base)
+			continue;
+
+		if (encoder->enable)
+			encoder->enable(state, encoder,
+					crtc_state, conn_state);
+		intel_opregion_notify_encoder(encoder, true);
+	}
+}
+
+static void intel_encoders_disable(struct intel_atomic_state *state,
+				   struct intel_crtc *crtc)
+{
+	const struct intel_crtc_state *old_crtc_state =
+		intel_atomic_get_old_crtc_state(state, crtc);
+	const struct drm_connector_state *old_conn_state;
+	struct drm_connector *conn;
+	int i;
+
+	for_each_old_connector_in_state(&state->base, conn, old_conn_state, i) {
+		struct intel_encoder *encoder =
+			to_intel_encoder(old_conn_state->best_encoder);
+
+		if (old_conn_state->crtc != &crtc->base)
+			continue;
+
+		intel_opregion_notify_encoder(encoder, false);
+		if (encoder->disable)
+			encoder->disable(state, encoder,
+					 old_crtc_state, old_conn_state);
+	}
+}
+
+static void intel_encoders_post_disable(struct intel_atomic_state *state,
+					struct intel_crtc *crtc)
+{
+	const struct intel_crtc_state *old_crtc_state =
+		intel_atomic_get_old_crtc_state(state, crtc);
+	const struct drm_connector_state *old_conn_state;
+	struct drm_connector *conn;
+	int i;
+
+	for_each_old_connector_in_state(&state->base, conn, old_conn_state, i) {
+		struct intel_encoder *encoder =
+			to_intel_encoder(old_conn_state->best_encoder);
+
+		if (old_conn_state->crtc != &crtc->base)
+			continue;
+
+		if (encoder->post_disable)
+			encoder->post_disable(state, encoder,
+					      old_crtc_state, old_conn_state);
+	}
+}
+
+static void intel_encoders_post_pll_disable(struct intel_atomic_state *state,
+					    struct intel_crtc *crtc)
+{
+	const struct intel_crtc_state *old_crtc_state =
+		intel_atomic_get_old_crtc_state(state, crtc);
+	const struct drm_connector_state *old_conn_state;
+	struct drm_connector *conn;
+	int i;
+
+	for_each_old_connector_in_state(&state->base, conn, old_conn_state, i) {
+		struct intel_encoder *encoder =
+			to_intel_encoder(old_conn_state->best_encoder);
+
+		if (old_conn_state->crtc != &crtc->base)
+			continue;
+
+		if (encoder->post_pll_disable)
+			encoder->post_pll_disable(state, encoder,
+						  old_crtc_state, old_conn_state);
+	}
+}
+
+static void intel_encoders_update_pipe(struct intel_atomic_state *state,
+				       struct intel_crtc *crtc)
+{
+	const struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	const struct drm_connector_state *conn_state;
+	struct drm_connector *conn;
+	int i;
+
+	for_each_new_connector_in_state(&state->base, conn, conn_state, i) {
+		struct intel_encoder *encoder =
+			to_intel_encoder(conn_state->best_encoder);
+
+		if (conn_state->crtc != &crtc->base)
+			continue;
+
+		if (encoder->update_pipe)
+			encoder->update_pipe(state, encoder,
+					     crtc_state, conn_state);
+	}
+}
+
+static void intel_disable_primary_plane(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct intel_plane *plane = to_intel_plane(crtc->base.primary);
+
+	plane->disable_arm(plane, crtc_state);
+}
+
+static void ilk_configure_cpu_transcoder(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+
+	if (crtc_state->has_pch_encoder) {
+		intel_cpu_transcoder_set_m1_n1(crtc, cpu_transcoder,
+					       &crtc_state->fdi_m_n);
+	} else if (intel_crtc_has_dp_encoder(crtc_state)) {
+		intel_cpu_transcoder_set_m1_n1(crtc, cpu_transcoder,
+					       &crtc_state->dp_m_n);
+		intel_cpu_transcoder_set_m2_n2(crtc, cpu_transcoder,
+					       &crtc_state->dp_m2_n2);
+	}
+
+	intel_set_transcoder_timings(crtc_state);
+
+	ilk_set_pipeconf(crtc_state);
+}
+
+static void ilk_crtc_enable(struct intel_atomic_state *state,
+			    struct intel_crtc *crtc)
+{
+	const struct intel_crtc_state *new_crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+
+	if (drm_WARN_ON(&dev_priv->drm, crtc->active))
+		return;
+
+	/*
+	 * Sometimes spurious CPU pipe underruns happen during FDI
+	 * training, at least with VGA+HDMI cloning. Suppress them.
+	 *
+	 * On ILK we get an occasional spurious CPU pipe underruns
+	 * between eDP port A enable and vdd enable. Also PCH port
+	 * enable seems to result in the occasional CPU pipe underrun.
+	 *
+	 * Spurious PCH underruns also occur during PCH enabling.
+	 */
+	intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
+	intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, false);
+
+	ilk_configure_cpu_transcoder(new_crtc_state);
+
+	intel_set_pipe_src_size(new_crtc_state);
+
+	crtc->active = true;
+
+	intel_encoders_pre_enable(state, crtc);
+
+	if (new_crtc_state->has_pch_encoder) {
+		ilk_pch_pre_enable(state, crtc);
+	} else {
+		assert_fdi_tx_disabled(dev_priv, pipe);
+		assert_fdi_rx_disabled(dev_priv, pipe);
+	}
+
+	ilk_pfit_enable(new_crtc_state);
+
+	/*
+	 * On ILK+ LUT must be loaded before the pipe is running but with
+	 * clocks enabled
+	 */
+	intel_color_load_luts(new_crtc_state);
+	intel_color_commit_noarm(new_crtc_state);
+	intel_color_commit_arm(new_crtc_state);
+	/* update DSPCNTR to configure gamma for pipe bottom color */
+	intel_disable_primary_plane(new_crtc_state);
+
+	intel_initial_watermarks(state, crtc);
+	intel_enable_transcoder(new_crtc_state);
+
+	if (new_crtc_state->has_pch_encoder)
+		ilk_pch_enable(state, crtc);
+
+	intel_crtc_vblank_on(new_crtc_state);
+
+	intel_encoders_enable(state, crtc);
+
+	if (HAS_PCH_CPT(dev_priv))
+		cpt_verify_modeset(dev_priv, pipe);
+
+	/*
+	 * Must wait for vblank to avoid spurious PCH FIFO underruns.
+	 * And a second vblank wait is needed at least on ILK with
+	 * some interlaced HDMI modes. Let's do the double wait always
+	 * in case there are more corner cases we don't know about.
+	 */
+	if (new_crtc_state->has_pch_encoder) {
+		intel_crtc_wait_for_next_vblank(crtc);
+		intel_crtc_wait_for_next_vblank(crtc);
+	}
+	intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
+	intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, true);
+}
+
+static void glk_pipe_scaler_clock_gating_wa(struct drm_i915_private *dev_priv,
+					    enum pipe pipe, bool apply)
+{
+	u32 val = intel_de_read(dev_priv, CLKGATE_DIS_PSL(pipe));
+	u32 mask = DPF_GATING_DIS | DPF_RAM_GATING_DIS | DPFR_GATING_DIS;
+
+	if (apply)
+		val |= mask;
+	else
+		val &= ~mask;
+
+	intel_de_write(dev_priv, CLKGATE_DIS_PSL(pipe), val);
+}
+
+static void hsw_set_linetime_wm(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+
+	intel_de_write(dev_priv, WM_LINETIME(crtc->pipe),
+		       HSW_LINETIME(crtc_state->linetime) |
+		       HSW_IPS_LINETIME(crtc_state->ips_linetime));
+}
+
+static void hsw_set_frame_start_delay(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum transcoder transcoder = crtc_state->cpu_transcoder;
+	i915_reg_t reg = DISPLAY_VER(dev_priv) >= 14 ? MTL_CHICKEN_TRANS(transcoder) :
+			 CHICKEN_TRANS(transcoder);
+	u32 val;
+
+	val = intel_de_read(dev_priv, reg);
+	val &= ~HSW_FRAME_START_DELAY_MASK;
+	val |= HSW_FRAME_START_DELAY(crtc_state->framestart_delay - 1);
+	intel_de_write(dev_priv, reg, val);
+}
+
+static void icl_ddi_bigjoiner_pre_enable(struct intel_atomic_state *state,
+					 const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *master_crtc = intel_master_crtc(crtc_state);
+
+	/*
+	 * Enable sequence steps 1-7 on bigjoiner master
+	 */
+	if (intel_crtc_is_bigjoiner_slave(crtc_state))
+		intel_encoders_pre_pll_enable(state, master_crtc);
+
+	if (crtc_state->shared_dpll)
+		intel_enable_shared_dpll(crtc_state);
+
+	if (intel_crtc_is_bigjoiner_slave(crtc_state))
+		intel_encoders_pre_enable(state, master_crtc);
+}
+
+static void hsw_configure_cpu_transcoder(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+
+	if (crtc_state->has_pch_encoder) {
+		intel_cpu_transcoder_set_m1_n1(crtc, cpu_transcoder,
+					       &crtc_state->fdi_m_n);
+	} else if (intel_crtc_has_dp_encoder(crtc_state)) {
+		intel_cpu_transcoder_set_m1_n1(crtc, cpu_transcoder,
+					       &crtc_state->dp_m_n);
+		intel_cpu_transcoder_set_m2_n2(crtc, cpu_transcoder,
+					       &crtc_state->dp_m2_n2);
+	}
+
+	intel_set_transcoder_timings(crtc_state);
+
+	if (cpu_transcoder != TRANSCODER_EDP)
+		intel_de_write(dev_priv, PIPE_MULT(cpu_transcoder),
+			       crtc_state->pixel_multiplier - 1);
+
+	hsw_set_frame_start_delay(crtc_state);
+
+	hsw_set_transconf(crtc_state);
+}
+
+static void hsw_crtc_enable(struct intel_atomic_state *state,
+			    struct intel_crtc *crtc)
+{
+	const struct intel_crtc_state *new_crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe, hsw_workaround_pipe;
+	enum transcoder cpu_transcoder = new_crtc_state->cpu_transcoder;
+	bool psl_clkgate_wa;
+
+	if (drm_WARN_ON(&dev_priv->drm, crtc->active))
+		return;
+
+	if (!new_crtc_state->bigjoiner_pipes) {
+		intel_encoders_pre_pll_enable(state, crtc);
+
+		if (new_crtc_state->shared_dpll)
+			intel_enable_shared_dpll(new_crtc_state);
+
+		intel_encoders_pre_enable(state, crtc);
+	} else {
+		icl_ddi_bigjoiner_pre_enable(state, new_crtc_state);
+	}
+
+	intel_dsc_enable(new_crtc_state);
+
+	if (DISPLAY_VER(dev_priv) >= 13)
+		intel_uncompressed_joiner_enable(new_crtc_state);
+
+	intel_set_pipe_src_size(new_crtc_state);
+	if (DISPLAY_VER(dev_priv) >= 9 || IS_BROADWELL(dev_priv))
+		bdw_set_pipemisc(new_crtc_state);
+
+	if (!intel_crtc_is_bigjoiner_slave(new_crtc_state) &&
+	    !transcoder_is_dsi(cpu_transcoder))
+		hsw_configure_cpu_transcoder(new_crtc_state);
+
+	crtc->active = true;
+
+	/* Display WA #1180: WaDisableScalarClockGating: glk */
+	psl_clkgate_wa = DISPLAY_VER(dev_priv) == 10 &&
+		new_crtc_state->pch_pfit.enabled;
+	if (psl_clkgate_wa)
+		glk_pipe_scaler_clock_gating_wa(dev_priv, pipe, true);
+
+	if (DISPLAY_VER(dev_priv) >= 9)
+		skl_pfit_enable(new_crtc_state);
+	else
+		ilk_pfit_enable(new_crtc_state);
+
+	/*
+	 * On ILK+ LUT must be loaded before the pipe is running but with
+	 * clocks enabled
+	 */
+	intel_color_load_luts(new_crtc_state);
+	intel_color_commit_noarm(new_crtc_state);
+	intel_color_commit_arm(new_crtc_state);
+	/* update DSPCNTR to configure gamma/csc for pipe bottom color */
+	if (DISPLAY_VER(dev_priv) < 9)
+		intel_disable_primary_plane(new_crtc_state);
+
+	hsw_set_linetime_wm(new_crtc_state);
+
+	if (DISPLAY_VER(dev_priv) >= 11)
+		icl_set_pipe_chicken(new_crtc_state);
+
+	intel_initial_watermarks(state, crtc);
+
+	if (intel_crtc_is_bigjoiner_slave(new_crtc_state))
+		intel_crtc_vblank_on(new_crtc_state);
+
+	intel_encoders_enable(state, crtc);
+
+	if (psl_clkgate_wa) {
+		intel_crtc_wait_for_next_vblank(crtc);
+		glk_pipe_scaler_clock_gating_wa(dev_priv, pipe, false);
+	}
+
+	/* If we change the relative order between pipe/planes enabling, we need
+	 * to change the workaround. */
+	hsw_workaround_pipe = new_crtc_state->hsw_workaround_pipe;
+	if (IS_HASWELL(dev_priv) && hsw_workaround_pipe != INVALID_PIPE) {
+		struct intel_crtc *wa_crtc;
+
+		wa_crtc = intel_crtc_for_pipe(dev_priv, hsw_workaround_pipe);
+
+		intel_crtc_wait_for_next_vblank(wa_crtc);
+		intel_crtc_wait_for_next_vblank(wa_crtc);
+	}
+}
+
+void ilk_pfit_disable(const struct intel_crtc_state *old_crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+
+	/* To avoid upsetting the power well on haswell only disable the pfit if
+	 * it's in use. The hw state code will make sure we get this right. */
+	if (!old_crtc_state->pch_pfit.enabled)
+		return;
+
+	intel_de_write_fw(dev_priv, PF_CTL(pipe), 0);
+	intel_de_write_fw(dev_priv, PF_WIN_POS(pipe), 0);
+	intel_de_write_fw(dev_priv, PF_WIN_SZ(pipe), 0);
+}
+
+static void ilk_crtc_disable(struct intel_atomic_state *state,
+			     struct intel_crtc *crtc)
+{
+	const struct intel_crtc_state *old_crtc_state =
+		intel_atomic_get_old_crtc_state(state, crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+
+	/*
+	 * Sometimes spurious CPU pipe underruns happen when the
+	 * pipe is already disabled, but FDI RX/TX is still enabled.
+	 * Happens at least with VGA+HDMI cloning. Suppress them.
+	 */
+	intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
+	intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, false);
+
+	intel_encoders_disable(state, crtc);
+
+	intel_crtc_vblank_off(old_crtc_state);
+
+	intel_disable_transcoder(old_crtc_state);
+
+	ilk_pfit_disable(old_crtc_state);
+
+	if (old_crtc_state->has_pch_encoder)
+		ilk_pch_disable(state, crtc);
+
+	intel_encoders_post_disable(state, crtc);
+
+	if (old_crtc_state->has_pch_encoder)
+		ilk_pch_post_disable(state, crtc);
+
+	intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
+	intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, true);
+}
+
+static void hsw_crtc_disable(struct intel_atomic_state *state,
+			     struct intel_crtc *crtc)
+{
+	const struct intel_crtc_state *old_crtc_state =
+		intel_atomic_get_old_crtc_state(state, crtc);
+
+	/*
+	 * FIXME collapse everything to one hook.
+	 * Need care with mst->ddi interactions.
+	 */
+	if (!intel_crtc_is_bigjoiner_slave(old_crtc_state)) {
+		intel_encoders_disable(state, crtc);
+		intel_encoders_post_disable(state, crtc);
+	}
+}
+
+static void i9xx_pfit_enable(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+
+	if (!crtc_state->gmch_pfit.control)
+		return;
+
+	/*
+	 * The panel fitter should only be adjusted whilst the pipe is disabled,
+	 * according to register description and PRM.
+	 */
+	drm_WARN_ON(&dev_priv->drm,
+		    intel_de_read(dev_priv, PFIT_CONTROL) & PFIT_ENABLE);
+	assert_transcoder_disabled(dev_priv, crtc_state->cpu_transcoder);
+
+	intel_de_write(dev_priv, PFIT_PGM_RATIOS,
+		       crtc_state->gmch_pfit.pgm_ratios);
+	intel_de_write(dev_priv, PFIT_CONTROL, crtc_state->gmch_pfit.control);
+
+	/* Border color in case we don't scale up to the full screen. Black by
+	 * default, change to something else for debugging. */
+	intel_de_write(dev_priv, BCLRPAT(crtc->pipe), 0);
+}
+
+bool intel_phy_is_combo(struct drm_i915_private *dev_priv, enum phy phy)
+{
+	if (phy == PHY_NONE)
+		return false;
+	else if (IS_ALDERLAKE_S(dev_priv))
+		return phy <= PHY_E;
+	else if (IS_DG1(dev_priv) || IS_ROCKETLAKE(dev_priv))
+		return phy <= PHY_D;
+	else if (IS_JSL_EHL(dev_priv))
+		return phy <= PHY_C;
+	else if (IS_ALDERLAKE_P(dev_priv) || IS_DISPLAY_VER(dev_priv, 11, 12))
+		return phy <= PHY_B;
+	else
+		/*
+		 * DG2 outputs labelled as "combo PHY" in the bspec use
+		 * SNPS PHYs with completely different programming,
+		 * hence we always return false here.
+		 */
+		return false;
+}
+
+bool intel_phy_is_tc(struct drm_i915_private *dev_priv, enum phy phy)
+{
+	if (IS_DG2(dev_priv))
+		/* DG2's "TC1" output uses a SNPS PHY */
+		return false;
+	else if (IS_ALDERLAKE_P(dev_priv))
+		return phy >= PHY_F && phy <= PHY_I;
+	else if (IS_TIGERLAKE(dev_priv))
+		return phy >= PHY_D && phy <= PHY_I;
+	else if (IS_ICELAKE(dev_priv))
+		return phy >= PHY_C && phy <= PHY_F;
+	else
+		return false;
+}
+
+bool intel_phy_is_snps(struct drm_i915_private *dev_priv, enum phy phy)
+{
+	if (phy == PHY_NONE)
+		return false;
+	else if (IS_DG2(dev_priv))
+		/*
+		 * All four "combo" ports and the TC1 port (PHY E) use
+		 * Synopsis PHYs.
+		 */
+		return phy <= PHY_E;
+
+	return false;
+}
+
+enum phy intel_port_to_phy(struct drm_i915_private *i915, enum port port)
+{
+	if (DISPLAY_VER(i915) >= 13 && port >= PORT_D_XELPD)
+		return PHY_D + port - PORT_D_XELPD;
+	else if (DISPLAY_VER(i915) >= 13 && port >= PORT_TC1)
+		return PHY_F + port - PORT_TC1;
+	else if (IS_ALDERLAKE_S(i915) && port >= PORT_TC1)
+		return PHY_B + port - PORT_TC1;
+	else if ((IS_DG1(i915) || IS_ROCKETLAKE(i915)) && port >= PORT_TC1)
+		return PHY_C + port - PORT_TC1;
+	else if (IS_JSL_EHL(i915) && port == PORT_D)
+		return PHY_A;
+
+	return PHY_A + port - PORT_A;
+}
+
+enum tc_port intel_port_to_tc(struct drm_i915_private *dev_priv, enum port port)
+{
+	if (!intel_phy_is_tc(dev_priv, intel_port_to_phy(dev_priv, port)))
+		return TC_PORT_NONE;
+
+	if (DISPLAY_VER(dev_priv) >= 12)
+		return TC_PORT_1 + port - PORT_TC1;
+	else
+		return TC_PORT_1 + port - PORT_C;
+}
+
+enum intel_display_power_domain
+intel_aux_power_domain(struct intel_digital_port *dig_port)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+
+	if (intel_tc_port_in_tbt_alt_mode(dig_port))
+		return intel_display_power_tbt_aux_domain(i915, dig_port->aux_ch);
+
+	return intel_display_power_legacy_aux_domain(i915, dig_port->aux_ch);
+}
+
+static void get_crtc_power_domains(struct intel_crtc_state *crtc_state,
+				   struct intel_power_domain_mask *mask)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+	struct drm_encoder *encoder;
+	enum pipe pipe = crtc->pipe;
+
+	bitmap_zero(mask->bits, POWER_DOMAIN_NUM);
+
+	if (!crtc_state->hw.active)
+		return;
+
+	set_bit(POWER_DOMAIN_PIPE(pipe), mask->bits);
+	set_bit(POWER_DOMAIN_TRANSCODER(cpu_transcoder), mask->bits);
+	if (crtc_state->pch_pfit.enabled ||
+	    crtc_state->pch_pfit.force_thru)
+		set_bit(POWER_DOMAIN_PIPE_PANEL_FITTER(pipe), mask->bits);
+
+	drm_for_each_encoder_mask(encoder, &dev_priv->drm,
+				  crtc_state->uapi.encoder_mask) {
+		struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
+
+		set_bit(intel_encoder->power_domain, mask->bits);
+	}
+
+	if (HAS_DDI(dev_priv) && crtc_state->has_audio)
+		set_bit(POWER_DOMAIN_AUDIO_MMIO, mask->bits);
+
+	if (crtc_state->shared_dpll)
+		set_bit(POWER_DOMAIN_DISPLAY_CORE, mask->bits);
+
+	if (crtc_state->dsc.compression_enable)
+		set_bit(intel_dsc_power_domain(crtc, cpu_transcoder), mask->bits);
+}
+
+void intel_modeset_get_crtc_power_domains(struct intel_crtc_state *crtc_state,
+					  struct intel_power_domain_mask *old_domains)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum intel_display_power_domain domain;
+	struct intel_power_domain_mask domains, new_domains;
+
+	get_crtc_power_domains(crtc_state, &domains);
+
+	bitmap_andnot(new_domains.bits,
+		      domains.bits,
+		      crtc->enabled_power_domains.mask.bits,
+		      POWER_DOMAIN_NUM);
+	bitmap_andnot(old_domains->bits,
+		      crtc->enabled_power_domains.mask.bits,
+		      domains.bits,
+		      POWER_DOMAIN_NUM);
+
+	for_each_power_domain(domain, &new_domains)
+		intel_display_power_get_in_set(dev_priv,
+					       &crtc->enabled_power_domains,
+					       domain);
+}
+
+void intel_modeset_put_crtc_power_domains(struct intel_crtc *crtc,
+					  struct intel_power_domain_mask *domains)
+{
+	intel_display_power_put_mask_in_set(to_i915(crtc->base.dev),
+					    &crtc->enabled_power_domains,
+					    domains);
+}
+
+static void i9xx_configure_cpu_transcoder(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+
+	if (intel_crtc_has_dp_encoder(crtc_state)) {
+		intel_cpu_transcoder_set_m1_n1(crtc, cpu_transcoder,
+					       &crtc_state->dp_m_n);
+		intel_cpu_transcoder_set_m2_n2(crtc, cpu_transcoder,
+					       &crtc_state->dp_m2_n2);
+	}
+
+	intel_set_transcoder_timings(crtc_state);
+
+	i9xx_set_pipeconf(crtc_state);
+}
+
+static void valleyview_crtc_enable(struct intel_atomic_state *state,
+				   struct intel_crtc *crtc)
+{
+	const struct intel_crtc_state *new_crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+
+	if (drm_WARN_ON(&dev_priv->drm, crtc->active))
+		return;
+
+	i9xx_configure_cpu_transcoder(new_crtc_state);
+
+	intel_set_pipe_src_size(new_crtc_state);
+
+	if (IS_CHERRYVIEW(dev_priv) && pipe == PIPE_B) {
+		intel_de_write(dev_priv, CHV_BLEND(pipe), CHV_BLEND_LEGACY);
+		intel_de_write(dev_priv, CHV_CANVAS(pipe), 0);
+	}
+
+	crtc->active = true;
+
+	intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
+
+	intel_encoders_pre_pll_enable(state, crtc);
+
+	if (IS_CHERRYVIEW(dev_priv))
+		chv_enable_pll(new_crtc_state);
+	else
+		vlv_enable_pll(new_crtc_state);
+
+	intel_encoders_pre_enable(state, crtc);
+
+	i9xx_pfit_enable(new_crtc_state);
+
+	intel_color_load_luts(new_crtc_state);
+	intel_color_commit_noarm(new_crtc_state);
+	intel_color_commit_arm(new_crtc_state);
+	/* update DSPCNTR to configure gamma for pipe bottom color */
+	intel_disable_primary_plane(new_crtc_state);
+
+	intel_initial_watermarks(state, crtc);
+	intel_enable_transcoder(new_crtc_state);
+
+	intel_crtc_vblank_on(new_crtc_state);
+
+	intel_encoders_enable(state, crtc);
+}
+
+static void i9xx_crtc_enable(struct intel_atomic_state *state,
+			     struct intel_crtc *crtc)
+{
+	const struct intel_crtc_state *new_crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+
+	if (drm_WARN_ON(&dev_priv->drm, crtc->active))
+		return;
+
+	i9xx_configure_cpu_transcoder(new_crtc_state);
+
+	intel_set_pipe_src_size(new_crtc_state);
+
+	crtc->active = true;
+
+	if (DISPLAY_VER(dev_priv) != 2)
+		intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
+
+	intel_encoders_pre_enable(state, crtc);
+
+	i9xx_enable_pll(new_crtc_state);
+
+	i9xx_pfit_enable(new_crtc_state);
+
+	intel_color_load_luts(new_crtc_state);
+	intel_color_commit_noarm(new_crtc_state);
+	intel_color_commit_arm(new_crtc_state);
+	/* update DSPCNTR to configure gamma for pipe bottom color */
+	intel_disable_primary_plane(new_crtc_state);
+
+	if (!intel_initial_watermarks(state, crtc))
+		intel_update_watermarks(dev_priv);
+	intel_enable_transcoder(new_crtc_state);
+
+	intel_crtc_vblank_on(new_crtc_state);
+
+	intel_encoders_enable(state, crtc);
+
+	/* prevents spurious underruns */
+	if (DISPLAY_VER(dev_priv) == 2)
+		intel_crtc_wait_for_next_vblank(crtc);
+}
+
+static void i9xx_pfit_disable(const struct intel_crtc_state *old_crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+
+	if (!old_crtc_state->gmch_pfit.control)
+		return;
+
+	assert_transcoder_disabled(dev_priv, old_crtc_state->cpu_transcoder);
+
+	drm_dbg_kms(&dev_priv->drm, "disabling pfit, current: 0x%08x\n",
+		    intel_de_read(dev_priv, PFIT_CONTROL));
+	intel_de_write(dev_priv, PFIT_CONTROL, 0);
+}
+
+static void i9xx_crtc_disable(struct intel_atomic_state *state,
+			      struct intel_crtc *crtc)
+{
+	struct intel_crtc_state *old_crtc_state =
+		intel_atomic_get_old_crtc_state(state, crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+
+	/*
+	 * On gen2 planes are double buffered but the pipe isn't, so we must
+	 * wait for planes to fully turn off before disabling the pipe.
+	 */
+	if (DISPLAY_VER(dev_priv) == 2)
+		intel_crtc_wait_for_next_vblank(crtc);
+
+	intel_encoders_disable(state, crtc);
+
+	intel_crtc_vblank_off(old_crtc_state);
+
+	intel_disable_transcoder(old_crtc_state);
+
+	i9xx_pfit_disable(old_crtc_state);
+
+	intel_encoders_post_disable(state, crtc);
+
+	if (!intel_crtc_has_type(old_crtc_state, INTEL_OUTPUT_DSI)) {
+		if (IS_CHERRYVIEW(dev_priv))
+			chv_disable_pll(dev_priv, pipe);
+		else if (IS_VALLEYVIEW(dev_priv))
+			vlv_disable_pll(dev_priv, pipe);
+		else
+			i9xx_disable_pll(old_crtc_state);
+	}
+
+	intel_encoders_post_pll_disable(state, crtc);
+
+	if (DISPLAY_VER(dev_priv) != 2)
+		intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
+
+	if (!dev_priv->display.funcs.wm->initial_watermarks)
+		intel_update_watermarks(dev_priv);
+
+	/* clock the pipe down to 640x480@60 to potentially save power */
+	if (IS_I830(dev_priv))
+		i830_enable_pipe(dev_priv, pipe);
+}
+
+
+/*
+ * turn all crtc's off, but do not adjust state
+ * This has to be paired with a call to intel_modeset_setup_hw_state.
+ */
+int intel_display_suspend(struct drm_device *dev)
+{
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct drm_atomic_state *state;
+	int ret;
+
+	if (!HAS_DISPLAY(dev_priv))
+		return 0;
+
+	state = drm_atomic_helper_suspend(dev);
+	ret = PTR_ERR_OR_ZERO(state);
+	if (ret)
+		drm_err(&dev_priv->drm, "Suspending crtc's failed with %i\n",
+			ret);
+	else
+		dev_priv->modeset_restore_state = state;
+	return ret;
+}
+
+void intel_encoder_destroy(struct drm_encoder *encoder)
+{
+	struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
+
+	drm_encoder_cleanup(encoder);
+	kfree(intel_encoder);
+}
+
+static bool intel_crtc_supports_double_wide(const struct intel_crtc *crtc)
+{
+	const struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+
+	/* GDG double wide on either pipe, otherwise pipe A only */
+	return DISPLAY_VER(dev_priv) < 4 &&
+		(crtc->pipe == PIPE_A || IS_I915G(dev_priv));
+}
+
+static u32 ilk_pipe_pixel_rate(const struct intel_crtc_state *crtc_state)
+{
+	u32 pixel_rate = crtc_state->hw.pipe_mode.crtc_clock;
+	struct drm_rect src;
+
+	/*
+	 * We only use IF-ID interlacing. If we ever use
+	 * PF-ID we'll need to adjust the pixel_rate here.
+	 */
+
+	if (!crtc_state->pch_pfit.enabled)
+		return pixel_rate;
+
+	drm_rect_init(&src, 0, 0,
+		      drm_rect_width(&crtc_state->pipe_src) << 16,
+		      drm_rect_height(&crtc_state->pipe_src) << 16);
+
+	return intel_adjusted_rate(&src, &crtc_state->pch_pfit.dst,
+				   pixel_rate);
+}
+
+static void intel_mode_from_crtc_timings(struct drm_display_mode *mode,
+					 const struct drm_display_mode *timings)
+{
+	mode->hdisplay = timings->crtc_hdisplay;
+	mode->htotal = timings->crtc_htotal;
+	mode->hsync_start = timings->crtc_hsync_start;
+	mode->hsync_end = timings->crtc_hsync_end;
+
+	mode->vdisplay = timings->crtc_vdisplay;
+	mode->vtotal = timings->crtc_vtotal;
+	mode->vsync_start = timings->crtc_vsync_start;
+	mode->vsync_end = timings->crtc_vsync_end;
+
+	mode->flags = timings->flags;
+	mode->type = DRM_MODE_TYPE_DRIVER;
+
+	mode->clock = timings->crtc_clock;
+
+	drm_mode_set_name(mode);
+}
+
+static void intel_crtc_compute_pixel_rate(struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+
+	if (HAS_GMCH(dev_priv))
+		/* FIXME calculate proper pipe pixel rate for GMCH pfit */
+		crtc_state->pixel_rate =
+			crtc_state->hw.pipe_mode.crtc_clock;
+	else
+		crtc_state->pixel_rate =
+			ilk_pipe_pixel_rate(crtc_state);
+}
+
+static void intel_bigjoiner_adjust_timings(const struct intel_crtc_state *crtc_state,
+					   struct drm_display_mode *mode)
+{
+	int num_pipes = intel_bigjoiner_num_pipes(crtc_state);
+
+	if (num_pipes < 2)
+		return;
+
+	mode->crtc_clock /= num_pipes;
+	mode->crtc_hdisplay /= num_pipes;
+	mode->crtc_hblank_start /= num_pipes;
+	mode->crtc_hblank_end /= num_pipes;
+	mode->crtc_hsync_start /= num_pipes;
+	mode->crtc_hsync_end /= num_pipes;
+	mode->crtc_htotal /= num_pipes;
+}
+
+static void intel_splitter_adjust_timings(const struct intel_crtc_state *crtc_state,
+					  struct drm_display_mode *mode)
+{
+	int overlap = crtc_state->splitter.pixel_overlap;
+	int n = crtc_state->splitter.link_count;
+
+	if (!crtc_state->splitter.enable)
+		return;
+
+	/*
+	 * eDP MSO uses segment timings from EDID for transcoder
+	 * timings, but full mode for everything else.
+	 *
+	 * h_full = (h_segment - pixel_overlap) * link_count
+	 */
+	mode->crtc_hdisplay = (mode->crtc_hdisplay - overlap) * n;
+	mode->crtc_hblank_start = (mode->crtc_hblank_start - overlap) * n;
+	mode->crtc_hblank_end = (mode->crtc_hblank_end - overlap) * n;
+	mode->crtc_hsync_start = (mode->crtc_hsync_start - overlap) * n;
+	mode->crtc_hsync_end = (mode->crtc_hsync_end - overlap) * n;
+	mode->crtc_htotal = (mode->crtc_htotal - overlap) * n;
+	mode->crtc_clock *= n;
+}
+
+static void intel_crtc_readout_derived_state(struct intel_crtc_state *crtc_state)
+{
+	struct drm_display_mode *mode = &crtc_state->hw.mode;
+	struct drm_display_mode *pipe_mode = &crtc_state->hw.pipe_mode;
+	struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode;
+
+	/*
+	 * Start with the adjusted_mode crtc timings, which
+	 * have been filled with the transcoder timings.
+	 */
+	drm_mode_copy(pipe_mode, adjusted_mode);
+
+	/* Expand MSO per-segment transcoder timings to full */
+	intel_splitter_adjust_timings(crtc_state, pipe_mode);
+
+	/*
+	 * We want the full numbers in adjusted_mode normal timings,
+	 * adjusted_mode crtc timings are left with the raw transcoder
+	 * timings.
+	 */
+	intel_mode_from_crtc_timings(adjusted_mode, pipe_mode);
+
+	/* Populate the "user" mode with full numbers */
+	drm_mode_copy(mode, pipe_mode);
+	intel_mode_from_crtc_timings(mode, mode);
+	mode->hdisplay = drm_rect_width(&crtc_state->pipe_src) *
+		(intel_bigjoiner_num_pipes(crtc_state) ?: 1);
+	mode->vdisplay = drm_rect_height(&crtc_state->pipe_src);
+
+	/* Derive per-pipe timings in case bigjoiner is used */
+	intel_bigjoiner_adjust_timings(crtc_state, pipe_mode);
+	intel_mode_from_crtc_timings(pipe_mode, pipe_mode);
+
+	intel_crtc_compute_pixel_rate(crtc_state);
+}
+
+void intel_encoder_get_config(struct intel_encoder *encoder,
+			      struct intel_crtc_state *crtc_state)
+{
+	encoder->get_config(encoder, crtc_state);
+
+	intel_crtc_readout_derived_state(crtc_state);
+}
+
+static void intel_bigjoiner_compute_pipe_src(struct intel_crtc_state *crtc_state)
+{
+	int num_pipes = intel_bigjoiner_num_pipes(crtc_state);
+	int width, height;
+
+	if (num_pipes < 2)
+		return;
+
+	width = drm_rect_width(&crtc_state->pipe_src);
+	height = drm_rect_height(&crtc_state->pipe_src);
+
+	drm_rect_init(&crtc_state->pipe_src, 0, 0,
+		      width / num_pipes, height);
+}
+
+static int intel_crtc_compute_pipe_src(struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+
+	intel_bigjoiner_compute_pipe_src(crtc_state);
+
+	/*
+	 * Pipe horizontal size must be even in:
+	 * - DVO ganged mode
+	 * - LVDS dual channel mode
+	 * - Double wide pipe
+	 */
+	if (drm_rect_width(&crtc_state->pipe_src) & 1) {
+		if (crtc_state->double_wide) {
+			drm_dbg_kms(&i915->drm,
+				    "[CRTC:%d:%s] Odd pipe source width not supported with double wide pipe\n",
+				    crtc->base.base.id, crtc->base.name);
+			return -EINVAL;
+		}
+
+		if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS) &&
+		    intel_is_dual_link_lvds(i915)) {
+			drm_dbg_kms(&i915->drm,
+				    "[CRTC:%d:%s] Odd pipe source width not supported with dual link LVDS\n",
+				    crtc->base.base.id, crtc->base.name);
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}
+
+static int intel_crtc_compute_pipe_mode(struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode;
+	struct drm_display_mode *pipe_mode = &crtc_state->hw.pipe_mode;
+	int clock_limit = i915->max_dotclk_freq;
+
+	/*
+	 * Start with the adjusted_mode crtc timings, which
+	 * have been filled with the transcoder timings.
+	 */
+	drm_mode_copy(pipe_mode, adjusted_mode);
+
+	/* Expand MSO per-segment transcoder timings to full */
+	intel_splitter_adjust_timings(crtc_state, pipe_mode);
+
+	/* Derive per-pipe timings in case bigjoiner is used */
+	intel_bigjoiner_adjust_timings(crtc_state, pipe_mode);
+	intel_mode_from_crtc_timings(pipe_mode, pipe_mode);
+
+	if (DISPLAY_VER(i915) < 4) {
+		clock_limit = i915->display.cdclk.max_cdclk_freq * 9 / 10;
+
+		/*
+		 * Enable double wide mode when the dot clock
+		 * is > 90% of the (display) core speed.
+		 */
+		if (intel_crtc_supports_double_wide(crtc) &&
+		    pipe_mode->crtc_clock > clock_limit) {
+			clock_limit = i915->max_dotclk_freq;
+			crtc_state->double_wide = true;
+		}
+	}
+
+	if (pipe_mode->crtc_clock > clock_limit) {
+		drm_dbg_kms(&i915->drm,
+			    "[CRTC:%d:%s] requested pixel clock (%d kHz) too high (max: %d kHz, double wide: %s)\n",
+			    crtc->base.base.id, crtc->base.name,
+			    pipe_mode->crtc_clock, clock_limit,
+			    str_yes_no(crtc_state->double_wide));
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int intel_crtc_compute_config(struct intel_atomic_state *state,
+				     struct intel_crtc *crtc)
+{
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	int ret;
+
+	ret = intel_dpll_crtc_compute_clock(state, crtc);
+	if (ret)
+		return ret;
+
+	ret = intel_crtc_compute_pipe_src(crtc_state);
+	if (ret)
+		return ret;
+
+	ret = intel_crtc_compute_pipe_mode(crtc_state);
+	if (ret)
+		return ret;
+
+	intel_crtc_compute_pixel_rate(crtc_state);
+
+	if (crtc_state->has_pch_encoder)
+		return ilk_fdi_compute_config(crtc, crtc_state);
+
+	return 0;
+}
+
+static void
+intel_reduce_m_n_ratio(u32 *num, u32 *den)
+{
+	while (*num > DATA_LINK_M_N_MASK ||
+	       *den > DATA_LINK_M_N_MASK) {
+		*num >>= 1;
+		*den >>= 1;
+	}
+}
+
+static void compute_m_n(u32 *ret_m, u32 *ret_n,
+			u32 m, u32 n, u32 constant_n)
+{
+	if (constant_n)
+		*ret_n = constant_n;
+	else
+		*ret_n = min_t(unsigned int, roundup_pow_of_two(n), DATA_LINK_N_MAX);
+
+	*ret_m = div_u64(mul_u32_u32(m, *ret_n), n);
+	intel_reduce_m_n_ratio(ret_m, ret_n);
+}
+
+void
+intel_link_compute_m_n(u16 bits_per_pixel, int nlanes,
+		       int pixel_clock, int link_clock,
+		       struct intel_link_m_n *m_n,
+		       bool fec_enable)
+{
+	u32 data_clock = bits_per_pixel * pixel_clock;
+
+	if (fec_enable)
+		data_clock = intel_dp_mode_to_fec_clock(data_clock);
+
+	/*
+	 * Windows/BIOS uses fixed M/N values always. Follow suit.
+	 *
+	 * Also several DP dongles in particular seem to be fussy
+	 * about too large link M/N values. Presumably the 20bit
+	 * value used by Windows/BIOS is acceptable to everyone.
+	 */
+	m_n->tu = 64;
+	compute_m_n(&m_n->data_m, &m_n->data_n,
+		    data_clock, link_clock * nlanes * 8,
+		    0x8000000);
+
+	compute_m_n(&m_n->link_m, &m_n->link_n,
+		    pixel_clock, link_clock,
+		    0x80000);
+}
+
+static void intel_panel_sanitize_ssc(struct drm_i915_private *dev_priv)
+{
+	/*
+	 * There may be no VBT; and if the BIOS enabled SSC we can
+	 * just keep using it to avoid unnecessary flicker.  Whereas if the
+	 * BIOS isn't using it, don't assume it will work even if the VBT
+	 * indicates as much.
+	 */
+	if (HAS_PCH_IBX(dev_priv) || HAS_PCH_CPT(dev_priv)) {
+		bool bios_lvds_use_ssc = intel_de_read(dev_priv,
+						       PCH_DREF_CONTROL) &
+			DREF_SSC1_ENABLE;
+
+		if (dev_priv->display.vbt.lvds_use_ssc != bios_lvds_use_ssc) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "SSC %s by BIOS, overriding VBT which says %s\n",
+				    str_enabled_disabled(bios_lvds_use_ssc),
+				    str_enabled_disabled(dev_priv->display.vbt.lvds_use_ssc));
+			dev_priv->display.vbt.lvds_use_ssc = bios_lvds_use_ssc;
+		}
+	}
+}
+
+void intel_zero_m_n(struct intel_link_m_n *m_n)
+{
+	/* corresponds to 0 register value */
+	memset(m_n, 0, sizeof(*m_n));
+	m_n->tu = 1;
+}
+
+void intel_set_m_n(struct drm_i915_private *i915,
+		   const struct intel_link_m_n *m_n,
+		   i915_reg_t data_m_reg, i915_reg_t data_n_reg,
+		   i915_reg_t link_m_reg, i915_reg_t link_n_reg)
+{
+	intel_de_write(i915, data_m_reg, TU_SIZE(m_n->tu) | m_n->data_m);
+	intel_de_write(i915, data_n_reg, m_n->data_n);
+	intel_de_write(i915, link_m_reg, m_n->link_m);
+	/*
+	 * On BDW+ writing LINK_N arms the double buffered update
+	 * of all the M/N registers, so it must be written last.
+	 */
+	intel_de_write(i915, link_n_reg, m_n->link_n);
+}
+
+bool intel_cpu_transcoder_has_m2_n2(struct drm_i915_private *dev_priv,
+				    enum transcoder transcoder)
+{
+	if (IS_HASWELL(dev_priv))
+		return transcoder == TRANSCODER_EDP;
+
+	return IS_DISPLAY_VER(dev_priv, 5, 7) || IS_CHERRYVIEW(dev_priv);
+}
+
+void intel_cpu_transcoder_set_m1_n1(struct intel_crtc *crtc,
+				    enum transcoder transcoder,
+				    const struct intel_link_m_n *m_n)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+
+	if (DISPLAY_VER(dev_priv) >= 5)
+		intel_set_m_n(dev_priv, m_n,
+			      PIPE_DATA_M1(transcoder), PIPE_DATA_N1(transcoder),
+			      PIPE_LINK_M1(transcoder), PIPE_LINK_N1(transcoder));
+	else
+		intel_set_m_n(dev_priv, m_n,
+			      PIPE_DATA_M_G4X(pipe), PIPE_DATA_N_G4X(pipe),
+			      PIPE_LINK_M_G4X(pipe), PIPE_LINK_N_G4X(pipe));
+}
+
+void intel_cpu_transcoder_set_m2_n2(struct intel_crtc *crtc,
+				    enum transcoder transcoder,
+				    const struct intel_link_m_n *m_n)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+
+	if (!intel_cpu_transcoder_has_m2_n2(dev_priv, transcoder))
+		return;
+
+	intel_set_m_n(dev_priv, m_n,
+		      PIPE_DATA_M2(transcoder), PIPE_DATA_N2(transcoder),
+		      PIPE_LINK_M2(transcoder), PIPE_LINK_N2(transcoder));
+}
+
+static void intel_set_transcoder_timings(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+	const struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode;
+	u32 crtc_vtotal, crtc_vblank_end;
+	int vsyncshift = 0;
+
+	/* We need to be careful not to changed the adjusted mode, for otherwise
+	 * the hw state checker will get angry at the mismatch. */
+	crtc_vtotal = adjusted_mode->crtc_vtotal;
+	crtc_vblank_end = adjusted_mode->crtc_vblank_end;
+
+	if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
+		/* the chip adds 2 halflines automatically */
+		crtc_vtotal -= 1;
+		crtc_vblank_end -= 1;
+
+		if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_SDVO))
+			vsyncshift = (adjusted_mode->crtc_htotal - 1) / 2;
+		else
+			vsyncshift = adjusted_mode->crtc_hsync_start -
+				adjusted_mode->crtc_htotal / 2;
+		if (vsyncshift < 0)
+			vsyncshift += adjusted_mode->crtc_htotal;
+	}
+
+	if (DISPLAY_VER(dev_priv) > 3)
+		intel_de_write(dev_priv, VSYNCSHIFT(cpu_transcoder),
+		               vsyncshift);
+
+	intel_de_write(dev_priv, HTOTAL(cpu_transcoder),
+		       (adjusted_mode->crtc_hdisplay - 1) | ((adjusted_mode->crtc_htotal - 1) << 16));
+	intel_de_write(dev_priv, HBLANK(cpu_transcoder),
+		       (adjusted_mode->crtc_hblank_start - 1) | ((adjusted_mode->crtc_hblank_end - 1) << 16));
+	intel_de_write(dev_priv, HSYNC(cpu_transcoder),
+		       (adjusted_mode->crtc_hsync_start - 1) | ((adjusted_mode->crtc_hsync_end - 1) << 16));
+
+	intel_de_write(dev_priv, VTOTAL(cpu_transcoder),
+		       (adjusted_mode->crtc_vdisplay - 1) | ((crtc_vtotal - 1) << 16));
+	intel_de_write(dev_priv, VBLANK(cpu_transcoder),
+		       (adjusted_mode->crtc_vblank_start - 1) | ((crtc_vblank_end - 1) << 16));
+	intel_de_write(dev_priv, VSYNC(cpu_transcoder),
+		       (adjusted_mode->crtc_vsync_start - 1) | ((adjusted_mode->crtc_vsync_end - 1) << 16));
+
+	/* Workaround: when the EDP input selection is B, the VTOTAL_B must be
+	 * programmed with the VTOTAL_EDP value. Same for VTOTAL_C. This is
+	 * documented on the DDI_FUNC_CTL register description, EDP Input Select
+	 * bits. */
+	if (IS_HASWELL(dev_priv) && cpu_transcoder == TRANSCODER_EDP &&
+	    (pipe == PIPE_B || pipe == PIPE_C))
+		intel_de_write(dev_priv, VTOTAL(pipe),
+		               intel_de_read(dev_priv, VTOTAL(cpu_transcoder)));
+
+}
+
+static void intel_set_pipe_src_size(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	int width = drm_rect_width(&crtc_state->pipe_src);
+	int height = drm_rect_height(&crtc_state->pipe_src);
+	enum pipe pipe = crtc->pipe;
+
+	/* pipesrc controls the size that is scaled from, which should
+	 * always be the user's requested size.
+	 */
+	intel_de_write(dev_priv, PIPESRC(pipe),
+		       PIPESRC_WIDTH(width - 1) | PIPESRC_HEIGHT(height - 1));
+}
+
+static bool intel_pipe_is_interlaced(const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+
+	if (DISPLAY_VER(dev_priv) == 2)
+		return false;
+
+	if (DISPLAY_VER(dev_priv) >= 9 ||
+	    IS_BROADWELL(dev_priv) || IS_HASWELL(dev_priv))
+		return intel_de_read(dev_priv, PIPECONF(cpu_transcoder)) & PIPECONF_INTERLACE_MASK_HSW;
+	else
+		return intel_de_read(dev_priv, PIPECONF(cpu_transcoder)) & PIPECONF_INTERLACE_MASK;
+}
+
+static void intel_get_transcoder_timings(struct intel_crtc *crtc,
+					 struct intel_crtc_state *pipe_config)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
+	u32 tmp;
+
+	tmp = intel_de_read(dev_priv, HTOTAL(cpu_transcoder));
+	pipe_config->hw.adjusted_mode.crtc_hdisplay = (tmp & 0xffff) + 1;
+	pipe_config->hw.adjusted_mode.crtc_htotal = ((tmp >> 16) & 0xffff) + 1;
+
+	if (!transcoder_is_dsi(cpu_transcoder)) {
+		tmp = intel_de_read(dev_priv, HBLANK(cpu_transcoder));
+		pipe_config->hw.adjusted_mode.crtc_hblank_start =
+							(tmp & 0xffff) + 1;
+		pipe_config->hw.adjusted_mode.crtc_hblank_end =
+						((tmp >> 16) & 0xffff) + 1;
+	}
+	tmp = intel_de_read(dev_priv, HSYNC(cpu_transcoder));
+	pipe_config->hw.adjusted_mode.crtc_hsync_start = (tmp & 0xffff) + 1;
+	pipe_config->hw.adjusted_mode.crtc_hsync_end = ((tmp >> 16) & 0xffff) + 1;
+
+	tmp = intel_de_read(dev_priv, VTOTAL(cpu_transcoder));
+	pipe_config->hw.adjusted_mode.crtc_vdisplay = (tmp & 0xffff) + 1;
+	pipe_config->hw.adjusted_mode.crtc_vtotal = ((tmp >> 16) & 0xffff) + 1;
+
+	if (!transcoder_is_dsi(cpu_transcoder)) {
+		tmp = intel_de_read(dev_priv, VBLANK(cpu_transcoder));
+		pipe_config->hw.adjusted_mode.crtc_vblank_start =
+							(tmp & 0xffff) + 1;
+		pipe_config->hw.adjusted_mode.crtc_vblank_end =
+						((tmp >> 16) & 0xffff) + 1;
+	}
+	tmp = intel_de_read(dev_priv, VSYNC(cpu_transcoder));
+	pipe_config->hw.adjusted_mode.crtc_vsync_start = (tmp & 0xffff) + 1;
+	pipe_config->hw.adjusted_mode.crtc_vsync_end = ((tmp >> 16) & 0xffff) + 1;
+
+	if (intel_pipe_is_interlaced(pipe_config)) {
+		pipe_config->hw.adjusted_mode.flags |= DRM_MODE_FLAG_INTERLACE;
+		pipe_config->hw.adjusted_mode.crtc_vtotal += 1;
+		pipe_config->hw.adjusted_mode.crtc_vblank_end += 1;
+	}
+}
+
+static void intel_bigjoiner_adjust_pipe_src(struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	int num_pipes = intel_bigjoiner_num_pipes(crtc_state);
+	enum pipe master_pipe, pipe = crtc->pipe;
+	int width;
+
+	if (num_pipes < 2)
+		return;
+
+	master_pipe = bigjoiner_master_pipe(crtc_state);
+	width = drm_rect_width(&crtc_state->pipe_src);
+
+	drm_rect_translate_to(&crtc_state->pipe_src,
+			      (pipe - master_pipe) * width, 0);
+}
+
+static void intel_get_pipe_src_size(struct intel_crtc *crtc,
+				    struct intel_crtc_state *pipe_config)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	u32 tmp;
+
+	tmp = intel_de_read(dev_priv, PIPESRC(crtc->pipe));
+
+	drm_rect_init(&pipe_config->pipe_src, 0, 0,
+		      REG_FIELD_GET(PIPESRC_WIDTH_MASK, tmp) + 1,
+		      REG_FIELD_GET(PIPESRC_HEIGHT_MASK, tmp) + 1);
+
+	intel_bigjoiner_adjust_pipe_src(pipe_config);
+}
+
+void i9xx_set_pipeconf(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	u32 pipeconf = 0;
+
+	/*
+	 * - We keep both pipes enabled on 830
+	 * - During modeset the pipe is still disabled and must remain so
+	 * - During fastset the pipe is already enabled and must remain so
+	 */
+	if (IS_I830(dev_priv) || !intel_crtc_needs_modeset(crtc_state))
+		pipeconf |= PIPECONF_ENABLE;
+
+	if (crtc_state->double_wide)
+		pipeconf |= PIPECONF_DOUBLE_WIDE;
+
+	/* only g4x and later have fancy bpc/dither controls */
+	if (IS_G4X(dev_priv) || IS_VALLEYVIEW(dev_priv) ||
+	    IS_CHERRYVIEW(dev_priv)) {
+		/* Bspec claims that we can't use dithering for 30bpp pipes. */
+		if (crtc_state->dither && crtc_state->pipe_bpp != 30)
+			pipeconf |= PIPECONF_DITHER_EN |
+				    PIPECONF_DITHER_TYPE_SP;
+
+		switch (crtc_state->pipe_bpp) {
+		default:
+			/* Case prevented by intel_choose_pipe_bpp_dither. */
+			MISSING_CASE(crtc_state->pipe_bpp);
+			fallthrough;
+		case 18:
+			pipeconf |= PIPECONF_BPC_6;
+			break;
+		case 24:
+			pipeconf |= PIPECONF_BPC_8;
+			break;
+		case 30:
+			pipeconf |= PIPECONF_BPC_10;
+			break;
+		}
+	}
+
+	if (crtc_state->hw.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE) {
+		if (DISPLAY_VER(dev_priv) < 4 ||
+		    intel_crtc_has_type(crtc_state, INTEL_OUTPUT_SDVO))
+			pipeconf |= PIPECONF_INTERLACE_W_FIELD_INDICATION;
+		else
+			pipeconf |= PIPECONF_INTERLACE_W_SYNC_SHIFT;
+	} else {
+		pipeconf |= PIPECONF_INTERLACE_PROGRESSIVE;
+	}
+
+	if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
+	     crtc_state->limited_color_range)
+		pipeconf |= PIPECONF_COLOR_RANGE_SELECT;
+
+	pipeconf |= PIPECONF_GAMMA_MODE(crtc_state->gamma_mode);
+
+	pipeconf |= PIPECONF_FRAME_START_DELAY(crtc_state->framestart_delay - 1);
+
+	intel_de_write(dev_priv, PIPECONF(crtc->pipe), pipeconf);
+	intel_de_posting_read(dev_priv, PIPECONF(crtc->pipe));
+}
+
+static bool i9xx_has_pfit(struct drm_i915_private *dev_priv)
+{
+	if (IS_I830(dev_priv))
+		return false;
+
+	return DISPLAY_VER(dev_priv) >= 4 ||
+		IS_PINEVIEW(dev_priv) || IS_MOBILE(dev_priv);
+}
+
+static void i9xx_get_pfit_config(struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	u32 tmp;
+
+	if (!i9xx_has_pfit(dev_priv))
+		return;
+
+	tmp = intel_de_read(dev_priv, PFIT_CONTROL);
+	if (!(tmp & PFIT_ENABLE))
+		return;
+
+	/* Check whether the pfit is attached to our pipe. */
+	if (DISPLAY_VER(dev_priv) < 4) {
+		if (crtc->pipe != PIPE_B)
+			return;
+	} else {
+		if ((tmp & PFIT_PIPE_MASK) != (crtc->pipe << PFIT_PIPE_SHIFT))
+			return;
+	}
+
+	crtc_state->gmch_pfit.control = tmp;
+	crtc_state->gmch_pfit.pgm_ratios =
+		intel_de_read(dev_priv, PFIT_PGM_RATIOS);
+}
+
+static void vlv_crtc_clock_get(struct intel_crtc *crtc,
+			       struct intel_crtc_state *pipe_config)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	enum pipe pipe = crtc->pipe;
+	struct dpll clock;
+	u32 mdiv;
+	int refclk = 100000;
+
+	/* In case of DSI, DPLL will not be used */
+	if ((pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE) == 0)
+		return;
+
+	vlv_dpio_get(dev_priv);
+	mdiv = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW3(pipe));
+	vlv_dpio_put(dev_priv);
+
+	clock.m1 = (mdiv >> DPIO_M1DIV_SHIFT) & 7;
+	clock.m2 = mdiv & DPIO_M2DIV_MASK;
+	clock.n = (mdiv >> DPIO_N_SHIFT) & 0xf;
+	clock.p1 = (mdiv >> DPIO_P1_SHIFT) & 7;
+	clock.p2 = (mdiv >> DPIO_P2_SHIFT) & 0x1f;
+
+	pipe_config->port_clock = vlv_calc_dpll_params(refclk, &clock);
+}
+
+static void chv_crtc_clock_get(struct intel_crtc *crtc,
+			       struct intel_crtc_state *pipe_config)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	enum pipe pipe = crtc->pipe;
+	enum dpio_channel port = vlv_pipe_to_channel(pipe);
+	struct dpll clock;
+	u32 cmn_dw13, pll_dw0, pll_dw1, pll_dw2, pll_dw3;
+	int refclk = 100000;
+
+	/* In case of DSI, DPLL will not be used */
+	if ((pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE) == 0)
+		return;
+
+	vlv_dpio_get(dev_priv);
+	cmn_dw13 = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW13(port));
+	pll_dw0 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW0(port));
+	pll_dw1 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW1(port));
+	pll_dw2 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW2(port));
+	pll_dw3 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW3(port));
+	vlv_dpio_put(dev_priv);
+
+	clock.m1 = (pll_dw1 & 0x7) == DPIO_CHV_M1_DIV_BY_2 ? 2 : 0;
+	clock.m2 = (pll_dw0 & 0xff) << 22;
+	if (pll_dw3 & DPIO_CHV_FRAC_DIV_EN)
+		clock.m2 |= pll_dw2 & 0x3fffff;
+	clock.n = (pll_dw1 >> DPIO_CHV_N_DIV_SHIFT) & 0xf;
+	clock.p1 = (cmn_dw13 >> DPIO_CHV_P1_DIV_SHIFT) & 0x7;
+	clock.p2 = (cmn_dw13 >> DPIO_CHV_P2_DIV_SHIFT) & 0x1f;
+
+	pipe_config->port_clock = chv_calc_dpll_params(refclk, &clock);
+}
+
+static enum intel_output_format
+bdw_get_pipemisc_output_format(struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	u32 tmp;
+
+	tmp = intel_de_read(dev_priv, PIPEMISC(crtc->pipe));
+
+	if (tmp & PIPEMISC_YUV420_ENABLE) {
+		/* We support 4:2:0 in full blend mode only */
+		drm_WARN_ON(&dev_priv->drm,
+			    (tmp & PIPEMISC_YUV420_MODE_FULL_BLEND) == 0);
+
+		return INTEL_OUTPUT_FORMAT_YCBCR420;
+	} else if (tmp & PIPEMISC_OUTPUT_COLORSPACE_YUV) {
+		return INTEL_OUTPUT_FORMAT_YCBCR444;
+	} else {
+		return INTEL_OUTPUT_FORMAT_RGB;
+	}
+}
+
+static void i9xx_get_pipe_color_config(struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct intel_plane *plane = to_intel_plane(crtc->base.primary);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum i9xx_plane_id i9xx_plane = plane->i9xx_plane;
+	u32 tmp;
+
+	tmp = intel_de_read(dev_priv, DSPCNTR(i9xx_plane));
+
+	if (tmp & DISP_PIPE_GAMMA_ENABLE)
+		crtc_state->gamma_enable = true;
+
+	if (!HAS_GMCH(dev_priv) &&
+	    tmp & DISP_PIPE_CSC_ENABLE)
+		crtc_state->csc_enable = true;
+}
+
+static bool i9xx_get_pipe_config(struct intel_crtc *crtc,
+				 struct intel_crtc_state *pipe_config)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum intel_display_power_domain power_domain;
+	intel_wakeref_t wakeref;
+	u32 tmp;
+	bool ret;
+
+	power_domain = POWER_DOMAIN_PIPE(crtc->pipe);
+	wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
+	if (!wakeref)
+		return false;
+
+	pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
+	pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
+	pipe_config->shared_dpll = NULL;
+
+	ret = false;
+
+	tmp = intel_de_read(dev_priv, PIPECONF(crtc->pipe));
+	if (!(tmp & PIPECONF_ENABLE))
+		goto out;
+
+	if (IS_G4X(dev_priv) || IS_VALLEYVIEW(dev_priv) ||
+	    IS_CHERRYVIEW(dev_priv)) {
+		switch (tmp & PIPECONF_BPC_MASK) {
+		case PIPECONF_BPC_6:
+			pipe_config->pipe_bpp = 18;
+			break;
+		case PIPECONF_BPC_8:
+			pipe_config->pipe_bpp = 24;
+			break;
+		case PIPECONF_BPC_10:
+			pipe_config->pipe_bpp = 30;
+			break;
+		default:
+			MISSING_CASE(tmp);
+			break;
+		}
+	}
+
+	if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
+	    (tmp & PIPECONF_COLOR_RANGE_SELECT))
+		pipe_config->limited_color_range = true;
+
+	pipe_config->gamma_mode = REG_FIELD_GET(PIPECONF_GAMMA_MODE_MASK_I9XX, tmp);
+
+	pipe_config->framestart_delay = REG_FIELD_GET(PIPECONF_FRAME_START_DELAY_MASK, tmp) + 1;
+
+	if (IS_CHERRYVIEW(dev_priv))
+		pipe_config->cgm_mode = intel_de_read(dev_priv,
+						      CGM_PIPE_MODE(crtc->pipe));
+
+	i9xx_get_pipe_color_config(pipe_config);
+	intel_color_get_config(pipe_config);
+
+	if (DISPLAY_VER(dev_priv) < 4)
+		pipe_config->double_wide = tmp & PIPECONF_DOUBLE_WIDE;
+
+	intel_get_transcoder_timings(crtc, pipe_config);
+	intel_get_pipe_src_size(crtc, pipe_config);
+
+	i9xx_get_pfit_config(pipe_config);
+
+	if (DISPLAY_VER(dev_priv) >= 4) {
+		/* No way to read it out on pipes B and C */
+		if (IS_CHERRYVIEW(dev_priv) && crtc->pipe != PIPE_A)
+			tmp = dev_priv->chv_dpll_md[crtc->pipe];
+		else
+			tmp = intel_de_read(dev_priv, DPLL_MD(crtc->pipe));
+		pipe_config->pixel_multiplier =
+			((tmp & DPLL_MD_UDI_MULTIPLIER_MASK)
+			 >> DPLL_MD_UDI_MULTIPLIER_SHIFT) + 1;
+		pipe_config->dpll_hw_state.dpll_md = tmp;
+	} else if (IS_I945G(dev_priv) || IS_I945GM(dev_priv) ||
+		   IS_G33(dev_priv) || IS_PINEVIEW(dev_priv)) {
+		tmp = intel_de_read(dev_priv, DPLL(crtc->pipe));
+		pipe_config->pixel_multiplier =
+			((tmp & SDVO_MULTIPLIER_MASK)
+			 >> SDVO_MULTIPLIER_SHIFT_HIRES) + 1;
+	} else {
+		/* Note that on i915G/GM the pixel multiplier is in the sdvo
+		 * port and will be fixed up in the encoder->get_config
+		 * function. */
+		pipe_config->pixel_multiplier = 1;
+	}
+	pipe_config->dpll_hw_state.dpll = intel_de_read(dev_priv,
+							DPLL(crtc->pipe));
+	if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv)) {
+		pipe_config->dpll_hw_state.fp0 = intel_de_read(dev_priv,
+							       FP0(crtc->pipe));
+		pipe_config->dpll_hw_state.fp1 = intel_de_read(dev_priv,
+							       FP1(crtc->pipe));
+	} else {
+		/* Mask out read-only status bits. */
+		pipe_config->dpll_hw_state.dpll &= ~(DPLL_LOCK_VLV |
+						     DPLL_PORTC_READY_MASK |
+						     DPLL_PORTB_READY_MASK);
+	}
+
+	if (IS_CHERRYVIEW(dev_priv))
+		chv_crtc_clock_get(crtc, pipe_config);
+	else if (IS_VALLEYVIEW(dev_priv))
+		vlv_crtc_clock_get(crtc, pipe_config);
+	else
+		i9xx_crtc_clock_get(crtc, pipe_config);
+
+	/*
+	 * Normally the dotclock is filled in by the encoder .get_config()
+	 * but in case the pipe is enabled w/o any ports we need a sane
+	 * default.
+	 */
+	pipe_config->hw.adjusted_mode.crtc_clock =
+		pipe_config->port_clock / pipe_config->pixel_multiplier;
+
+	ret = true;
+
+out:
+	intel_display_power_put(dev_priv, power_domain, wakeref);
+
+	return ret;
+}
+
+void ilk_set_pipeconf(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+	u32 val = 0;
+
+	/*
+	 * - During modeset the pipe is still disabled and must remain so
+	 * - During fastset the pipe is already enabled and must remain so
+	 */
+	if (!intel_crtc_needs_modeset(crtc_state))
+		val |= PIPECONF_ENABLE;
+
+	switch (crtc_state->pipe_bpp) {
+	default:
+		/* Case prevented by intel_choose_pipe_bpp_dither. */
+		MISSING_CASE(crtc_state->pipe_bpp);
+		fallthrough;
+	case 18:
+		val |= PIPECONF_BPC_6;
+		break;
+	case 24:
+		val |= PIPECONF_BPC_8;
+		break;
+	case 30:
+		val |= PIPECONF_BPC_10;
+		break;
+	case 36:
+		val |= PIPECONF_BPC_12;
+		break;
+	}
+
+	if (crtc_state->dither)
+		val |= PIPECONF_DITHER_EN | PIPECONF_DITHER_TYPE_SP;
+
+	if (crtc_state->hw.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE)
+		val |= PIPECONF_INTERLACE_IF_ID_ILK;
+	else
+		val |= PIPECONF_INTERLACE_PF_PD_ILK;
+
+	/*
+	 * This would end up with an odd purple hue over
+	 * the entire display. Make sure we don't do it.
+	 */
+	drm_WARN_ON(&dev_priv->drm, crtc_state->limited_color_range &&
+		    crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB);
+
+	if (crtc_state->limited_color_range &&
+	    !intel_crtc_has_type(crtc_state, INTEL_OUTPUT_SDVO))
+		val |= PIPECONF_COLOR_RANGE_SELECT;
+
+	if (crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB)
+		val |= PIPECONF_OUTPUT_COLORSPACE_YUV709;
+
+	val |= PIPECONF_GAMMA_MODE(crtc_state->gamma_mode);
+
+	val |= PIPECONF_FRAME_START_DELAY(crtc_state->framestart_delay - 1);
+	val |= PIPECONF_MSA_TIMING_DELAY(crtc_state->msa_timing_delay);
+
+	intel_de_write(dev_priv, PIPECONF(pipe), val);
+	intel_de_posting_read(dev_priv, PIPECONF(pipe));
+}
+
+static void hsw_set_transconf(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+	u32 val = 0;
+
+	/*
+	 * - During modeset the pipe is still disabled and must remain so
+	 * - During fastset the pipe is already enabled and must remain so
+	 */
+	if (!intel_crtc_needs_modeset(crtc_state))
+		val |= PIPECONF_ENABLE;
+
+	if (IS_HASWELL(dev_priv) && crtc_state->dither)
+		val |= PIPECONF_DITHER_EN | PIPECONF_DITHER_TYPE_SP;
+
+	if (crtc_state->hw.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE)
+		val |= PIPECONF_INTERLACE_IF_ID_ILK;
+	else
+		val |= PIPECONF_INTERLACE_PF_PD_ILK;
+
+	if (IS_HASWELL(dev_priv) &&
+	    crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB)
+		val |= PIPECONF_OUTPUT_COLORSPACE_YUV_HSW;
+
+	intel_de_write(dev_priv, PIPECONF(cpu_transcoder), val);
+	intel_de_posting_read(dev_priv, PIPECONF(cpu_transcoder));
+}
+
+static void bdw_set_pipemisc(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	u32 val = 0;
+
+	switch (crtc_state->pipe_bpp) {
+	case 18:
+		val |= PIPEMISC_BPC_6;
+		break;
+	case 24:
+		val |= PIPEMISC_BPC_8;
+		break;
+	case 30:
+		val |= PIPEMISC_BPC_10;
+		break;
+	case 36:
+		/* Port output 12BPC defined for ADLP+ */
+		if (DISPLAY_VER(dev_priv) > 12)
+			val |= PIPEMISC_BPC_12_ADLP;
+		break;
+	default:
+		MISSING_CASE(crtc_state->pipe_bpp);
+		break;
+	}
+
+	if (crtc_state->dither)
+		val |= PIPEMISC_DITHER_ENABLE | PIPEMISC_DITHER_TYPE_SP;
+
+	if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420 ||
+	    crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR444)
+		val |= PIPEMISC_OUTPUT_COLORSPACE_YUV;
+
+	if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420)
+		val |= PIPEMISC_YUV420_ENABLE |
+			PIPEMISC_YUV420_MODE_FULL_BLEND;
+
+	if (DISPLAY_VER(dev_priv) >= 11 && is_hdr_mode(crtc_state))
+		val |= PIPEMISC_HDR_MODE_PRECISION;
+
+	if (DISPLAY_VER(dev_priv) >= 12)
+		val |= PIPEMISC_PIXEL_ROUNDING_TRUNC;
+
+	intel_de_write(dev_priv, PIPEMISC(crtc->pipe), val);
+}
+
+int bdw_get_pipemisc_bpp(struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	u32 tmp;
+
+	tmp = intel_de_read(dev_priv, PIPEMISC(crtc->pipe));
+
+	switch (tmp & PIPEMISC_BPC_MASK) {
+	case PIPEMISC_BPC_6:
+		return 18;
+	case PIPEMISC_BPC_8:
+		return 24;
+	case PIPEMISC_BPC_10:
+		return 30;
+	/*
+	 * PORT OUTPUT 12 BPC defined for ADLP+.
+	 *
+	 * TODO:
+	 * For previous platforms with DSI interface, bits 5:7
+	 * are used for storing pipe_bpp irrespective of dithering.
+	 * Since the value of 12 BPC is not defined for these bits
+	 * on older platforms, need to find a workaround for 12 BPC
+	 * MIPI DSI HW readout.
+	 */
+	case PIPEMISC_BPC_12_ADLP:
+		if (DISPLAY_VER(dev_priv) > 12)
+			return 36;
+		fallthrough;
+	default:
+		MISSING_CASE(tmp);
+		return 0;
+	}
+}
+
+int ilk_get_lanes_required(int target_clock, int link_bw, int bpp)
+{
+	/*
+	 * Account for spread spectrum to avoid
+	 * oversubscribing the link. Max center spread
+	 * is 2.5%; use 5% for safety's sake.
+	 */
+	u32 bps = target_clock * bpp * 21 / 20;
+	return DIV_ROUND_UP(bps, link_bw * 8);
+}
+
+void intel_get_m_n(struct drm_i915_private *i915,
+		   struct intel_link_m_n *m_n,
+		   i915_reg_t data_m_reg, i915_reg_t data_n_reg,
+		   i915_reg_t link_m_reg, i915_reg_t link_n_reg)
+{
+	m_n->link_m = intel_de_read(i915, link_m_reg) & DATA_LINK_M_N_MASK;
+	m_n->link_n = intel_de_read(i915, link_n_reg) & DATA_LINK_M_N_MASK;
+	m_n->data_m = intel_de_read(i915, data_m_reg) & DATA_LINK_M_N_MASK;
+	m_n->data_n = intel_de_read(i915, data_n_reg) & DATA_LINK_M_N_MASK;
+	m_n->tu = REG_FIELD_GET(TU_SIZE_MASK, intel_de_read(i915, data_m_reg)) + 1;
+}
+
+void intel_cpu_transcoder_get_m1_n1(struct intel_crtc *crtc,
+				    enum transcoder transcoder,
+				    struct intel_link_m_n *m_n)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+
+	if (DISPLAY_VER(dev_priv) >= 5)
+		intel_get_m_n(dev_priv, m_n,
+			      PIPE_DATA_M1(transcoder), PIPE_DATA_N1(transcoder),
+			      PIPE_LINK_M1(transcoder), PIPE_LINK_N1(transcoder));
+	else
+		intel_get_m_n(dev_priv, m_n,
+			      PIPE_DATA_M_G4X(pipe), PIPE_DATA_N_G4X(pipe),
+			      PIPE_LINK_M_G4X(pipe), PIPE_LINK_N_G4X(pipe));
+}
+
+void intel_cpu_transcoder_get_m2_n2(struct intel_crtc *crtc,
+				    enum transcoder transcoder,
+				    struct intel_link_m_n *m_n)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+
+	if (!intel_cpu_transcoder_has_m2_n2(dev_priv, transcoder))
+		return;
+
+	intel_get_m_n(dev_priv, m_n,
+		      PIPE_DATA_M2(transcoder), PIPE_DATA_N2(transcoder),
+		      PIPE_LINK_M2(transcoder), PIPE_LINK_N2(transcoder));
+}
+
+static void ilk_get_pfit_pos_size(struct intel_crtc_state *crtc_state,
+				  u32 pos, u32 size)
+{
+	drm_rect_init(&crtc_state->pch_pfit.dst,
+		      pos >> 16, pos & 0xffff,
+		      size >> 16, size & 0xffff);
+}
+
+static void skl_get_pfit_config(struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	struct intel_crtc_scaler_state *scaler_state = &crtc_state->scaler_state;
+	int id = -1;
+	int i;
+
+	/* find scaler attached to this pipe */
+	for (i = 0; i < crtc->num_scalers; i++) {
+		u32 ctl, pos, size;
+
+		ctl = intel_de_read(dev_priv, SKL_PS_CTRL(crtc->pipe, i));
+		if ((ctl & (PS_SCALER_EN | PS_PLANE_SEL_MASK)) != PS_SCALER_EN)
+			continue;
+
+		id = i;
+		crtc_state->pch_pfit.enabled = true;
+
+		pos = intel_de_read(dev_priv, SKL_PS_WIN_POS(crtc->pipe, i));
+		size = intel_de_read(dev_priv, SKL_PS_WIN_SZ(crtc->pipe, i));
+
+		ilk_get_pfit_pos_size(crtc_state, pos, size);
+
+		scaler_state->scalers[i].in_use = true;
+		break;
+	}
+
+	scaler_state->scaler_id = id;
+	if (id >= 0)
+		scaler_state->scaler_users |= (1 << SKL_CRTC_INDEX);
+	else
+		scaler_state->scaler_users &= ~(1 << SKL_CRTC_INDEX);
+}
+
+static void ilk_get_pfit_config(struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	u32 ctl, pos, size;
+
+	ctl = intel_de_read(dev_priv, PF_CTL(crtc->pipe));
+	if ((ctl & PF_ENABLE) == 0)
+		return;
+
+	crtc_state->pch_pfit.enabled = true;
+
+	pos = intel_de_read(dev_priv, PF_WIN_POS(crtc->pipe));
+	size = intel_de_read(dev_priv, PF_WIN_SZ(crtc->pipe));
+
+	ilk_get_pfit_pos_size(crtc_state, pos, size);
+
+	/*
+	 * We currently do not free assignements of panel fitters on
+	 * ivb/hsw (since we don't use the higher upscaling modes which
+	 * differentiates them) so just WARN about this case for now.
+	 */
+	drm_WARN_ON(&dev_priv->drm, DISPLAY_VER(dev_priv) == 7 &&
+		    (ctl & PF_PIPE_SEL_MASK_IVB) != PF_PIPE_SEL_IVB(crtc->pipe));
+}
+
+static bool ilk_get_pipe_config(struct intel_crtc *crtc,
+				struct intel_crtc_state *pipe_config)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	enum intel_display_power_domain power_domain;
+	intel_wakeref_t wakeref;
+	u32 tmp;
+	bool ret;
+
+	power_domain = POWER_DOMAIN_PIPE(crtc->pipe);
+	wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
+	if (!wakeref)
+		return false;
+
+	pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
+	pipe_config->shared_dpll = NULL;
+
+	ret = false;
+	tmp = intel_de_read(dev_priv, PIPECONF(crtc->pipe));
+	if (!(tmp & PIPECONF_ENABLE))
+		goto out;
+
+	switch (tmp & PIPECONF_BPC_MASK) {
+	case PIPECONF_BPC_6:
+		pipe_config->pipe_bpp = 18;
+		break;
+	case PIPECONF_BPC_8:
+		pipe_config->pipe_bpp = 24;
+		break;
+	case PIPECONF_BPC_10:
+		pipe_config->pipe_bpp = 30;
+		break;
+	case PIPECONF_BPC_12:
+		pipe_config->pipe_bpp = 36;
+		break;
+	default:
+		break;
+	}
+
+	if (tmp & PIPECONF_COLOR_RANGE_SELECT)
+		pipe_config->limited_color_range = true;
+
+	switch (tmp & PIPECONF_OUTPUT_COLORSPACE_MASK) {
+	case PIPECONF_OUTPUT_COLORSPACE_YUV601:
+	case PIPECONF_OUTPUT_COLORSPACE_YUV709:
+		pipe_config->output_format = INTEL_OUTPUT_FORMAT_YCBCR444;
+		break;
+	default:
+		pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
+		break;
+	}
+
+	pipe_config->gamma_mode = REG_FIELD_GET(PIPECONF_GAMMA_MODE_MASK_ILK, tmp);
+
+	pipe_config->framestart_delay = REG_FIELD_GET(PIPECONF_FRAME_START_DELAY_MASK, tmp) + 1;
+
+	pipe_config->msa_timing_delay = REG_FIELD_GET(PIPECONF_MSA_TIMING_DELAY_MASK, tmp);
+
+	pipe_config->csc_mode = intel_de_read(dev_priv,
+					      PIPE_CSC_MODE(crtc->pipe));
+
+	i9xx_get_pipe_color_config(pipe_config);
+	intel_color_get_config(pipe_config);
+
+	pipe_config->pixel_multiplier = 1;
+
+	ilk_pch_get_config(pipe_config);
+
+	intel_get_transcoder_timings(crtc, pipe_config);
+	intel_get_pipe_src_size(crtc, pipe_config);
+
+	ilk_get_pfit_config(pipe_config);
+
+	ret = true;
+
+out:
+	intel_display_power_put(dev_priv, power_domain, wakeref);
+
+	return ret;
+}
+
+static u8 bigjoiner_pipes(struct drm_i915_private *i915)
+{
+	u8 pipes;
+
+	if (DISPLAY_VER(i915) >= 12)
+		pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D);
+	else if (DISPLAY_VER(i915) >= 11)
+		pipes = BIT(PIPE_B) | BIT(PIPE_C);
+	else
+		pipes = 0;
+
+	return pipes & RUNTIME_INFO(i915)->pipe_mask;
+}
+
+static bool transcoder_ddi_func_is_enabled(struct drm_i915_private *dev_priv,
+					   enum transcoder cpu_transcoder)
+{
+	enum intel_display_power_domain power_domain;
+	intel_wakeref_t wakeref;
+	u32 tmp = 0;
+
+	power_domain = POWER_DOMAIN_TRANSCODER(cpu_transcoder);
+
+	with_intel_display_power_if_enabled(dev_priv, power_domain, wakeref)
+		tmp = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(cpu_transcoder));
+
+	return tmp & TRANS_DDI_FUNC_ENABLE;
+}
+
+static void enabled_bigjoiner_pipes(struct drm_i915_private *dev_priv,
+				    u8 *master_pipes, u8 *slave_pipes)
+{
+	struct intel_crtc *crtc;
+
+	*master_pipes = 0;
+	*slave_pipes = 0;
+
+	for_each_intel_crtc_in_pipe_mask(&dev_priv->drm, crtc,
+					 bigjoiner_pipes(dev_priv)) {
+		enum intel_display_power_domain power_domain;
+		enum pipe pipe = crtc->pipe;
+		intel_wakeref_t wakeref;
+
+		power_domain = intel_dsc_power_domain(crtc, (enum transcoder) pipe);
+		with_intel_display_power_if_enabled(dev_priv, power_domain, wakeref) {
+			u32 tmp = intel_de_read(dev_priv, ICL_PIPE_DSS_CTL1(pipe));
+
+			if (!(tmp & BIG_JOINER_ENABLE))
+				continue;
+
+			if (tmp & MASTER_BIG_JOINER_ENABLE)
+				*master_pipes |= BIT(pipe);
+			else
+				*slave_pipes |= BIT(pipe);
+		}
+
+		if (DISPLAY_VER(dev_priv) < 13)
+			continue;
+
+		power_domain = POWER_DOMAIN_PIPE(pipe);
+		with_intel_display_power_if_enabled(dev_priv, power_domain, wakeref) {
+			u32 tmp = intel_de_read(dev_priv, ICL_PIPE_DSS_CTL1(pipe));
+
+			if (tmp & UNCOMPRESSED_JOINER_MASTER)
+				*master_pipes |= BIT(pipe);
+			if (tmp & UNCOMPRESSED_JOINER_SLAVE)
+				*slave_pipes |= BIT(pipe);
+		}
+	}
+
+	/* Bigjoiner pipes should always be consecutive master and slave */
+	drm_WARN(&dev_priv->drm, *slave_pipes != *master_pipes << 1,
+		 "Bigjoiner misconfigured (master pipes 0x%x, slave pipes 0x%x)\n",
+		 *master_pipes, *slave_pipes);
+}
+
+static enum pipe get_bigjoiner_master_pipe(enum pipe pipe, u8 master_pipes, u8 slave_pipes)
+{
+	if ((slave_pipes & BIT(pipe)) == 0)
+		return pipe;
+
+	/* ignore everything above our pipe */
+	master_pipes &= ~GENMASK(7, pipe);
+
+	/* highest remaining bit should be our master pipe */
+	return fls(master_pipes) - 1;
+}
+
+static u8 get_bigjoiner_slave_pipes(enum pipe pipe, u8 master_pipes, u8 slave_pipes)
+{
+	enum pipe master_pipe, next_master_pipe;
+
+	master_pipe = get_bigjoiner_master_pipe(pipe, master_pipes, slave_pipes);
+
+	if ((master_pipes & BIT(master_pipe)) == 0)
+		return 0;
+
+	/* ignore our master pipe and everything below it */
+	master_pipes &= ~GENMASK(master_pipe, 0);
+	/* make sure a high bit is set for the ffs() */
+	master_pipes |= BIT(7);
+	/* lowest remaining bit should be the next master pipe */
+	next_master_pipe = ffs(master_pipes) - 1;
+
+	return slave_pipes & GENMASK(next_master_pipe - 1, master_pipe);
+}
+
+static u8 hsw_panel_transcoders(struct drm_i915_private *i915)
+{
+	u8 panel_transcoder_mask = BIT(TRANSCODER_EDP);
+
+	if (DISPLAY_VER(i915) >= 11)
+		panel_transcoder_mask |= BIT(TRANSCODER_DSI_0) | BIT(TRANSCODER_DSI_1);
+
+	return panel_transcoder_mask;
+}
+
+static u8 hsw_enabled_transcoders(struct intel_crtc *crtc)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	u8 panel_transcoder_mask = hsw_panel_transcoders(dev_priv);
+	enum transcoder cpu_transcoder;
+	u8 master_pipes, slave_pipes;
+	u8 enabled_transcoders = 0;
+
+	/*
+	 * XXX: Do intel_display_power_get_if_enabled before reading this (for
+	 * consistency and less surprising code; it's in always on power).
+	 */
+	for_each_cpu_transcoder_masked(dev_priv, cpu_transcoder,
+				       panel_transcoder_mask) {
+		enum intel_display_power_domain power_domain;
+		intel_wakeref_t wakeref;
+		enum pipe trans_pipe;
+		u32 tmp = 0;
+
+		power_domain = POWER_DOMAIN_TRANSCODER(cpu_transcoder);
+		with_intel_display_power_if_enabled(dev_priv, power_domain, wakeref)
+			tmp = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(cpu_transcoder));
+
+		if (!(tmp & TRANS_DDI_FUNC_ENABLE))
+			continue;
+
+		switch (tmp & TRANS_DDI_EDP_INPUT_MASK) {
+		default:
+			drm_WARN(dev, 1,
+				 "unknown pipe linked to transcoder %s\n",
+				 transcoder_name(cpu_transcoder));
+			fallthrough;
+		case TRANS_DDI_EDP_INPUT_A_ONOFF:
+		case TRANS_DDI_EDP_INPUT_A_ON:
+			trans_pipe = PIPE_A;
+			break;
+		case TRANS_DDI_EDP_INPUT_B_ONOFF:
+			trans_pipe = PIPE_B;
+			break;
+		case TRANS_DDI_EDP_INPUT_C_ONOFF:
+			trans_pipe = PIPE_C;
+			break;
+		case TRANS_DDI_EDP_INPUT_D_ONOFF:
+			trans_pipe = PIPE_D;
+			break;
+		}
+
+		if (trans_pipe == crtc->pipe)
+			enabled_transcoders |= BIT(cpu_transcoder);
+	}
+
+	/* single pipe or bigjoiner master */
+	cpu_transcoder = (enum transcoder) crtc->pipe;
+	if (transcoder_ddi_func_is_enabled(dev_priv, cpu_transcoder))
+		enabled_transcoders |= BIT(cpu_transcoder);
+
+	/* bigjoiner slave -> consider the master pipe's transcoder as well */
+	enabled_bigjoiner_pipes(dev_priv, &master_pipes, &slave_pipes);
+	if (slave_pipes & BIT(crtc->pipe)) {
+		cpu_transcoder = (enum transcoder)
+			get_bigjoiner_master_pipe(crtc->pipe, master_pipes, slave_pipes);
+		if (transcoder_ddi_func_is_enabled(dev_priv, cpu_transcoder))
+			enabled_transcoders |= BIT(cpu_transcoder);
+	}
+
+	return enabled_transcoders;
+}
+
+static bool has_edp_transcoders(u8 enabled_transcoders)
+{
+	return enabled_transcoders & BIT(TRANSCODER_EDP);
+}
+
+static bool has_dsi_transcoders(u8 enabled_transcoders)
+{
+	return enabled_transcoders & (BIT(TRANSCODER_DSI_0) |
+				      BIT(TRANSCODER_DSI_1));
+}
+
+static bool has_pipe_transcoders(u8 enabled_transcoders)
+{
+	return enabled_transcoders & ~(BIT(TRANSCODER_EDP) |
+				       BIT(TRANSCODER_DSI_0) |
+				       BIT(TRANSCODER_DSI_1));
+}
+
+static void assert_enabled_transcoders(struct drm_i915_private *i915,
+				       u8 enabled_transcoders)
+{
+	/* Only one type of transcoder please */
+	drm_WARN_ON(&i915->drm,
+		    has_edp_transcoders(enabled_transcoders) +
+		    has_dsi_transcoders(enabled_transcoders) +
+		    has_pipe_transcoders(enabled_transcoders) > 1);
+
+	/* Only DSI transcoders can be ganged */
+	drm_WARN_ON(&i915->drm,
+		    !has_dsi_transcoders(enabled_transcoders) &&
+		    !is_power_of_2(enabled_transcoders));
+}
+
+static bool hsw_get_transcoder_state(struct intel_crtc *crtc,
+				     struct intel_crtc_state *pipe_config,
+				     struct intel_display_power_domain_set *power_domain_set)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	unsigned long enabled_transcoders;
+	u32 tmp;
+
+	enabled_transcoders = hsw_enabled_transcoders(crtc);
+	if (!enabled_transcoders)
+		return false;
+
+	assert_enabled_transcoders(dev_priv, enabled_transcoders);
+
+	/*
+	 * With the exception of DSI we should only ever have
+	 * a single enabled transcoder. With DSI let's just
+	 * pick the first one.
+	 */
+	pipe_config->cpu_transcoder = ffs(enabled_transcoders) - 1;
+
+	if (!intel_display_power_get_in_set_if_enabled(dev_priv, power_domain_set,
+						       POWER_DOMAIN_TRANSCODER(pipe_config->cpu_transcoder)))
+		return false;
+
+	if (hsw_panel_transcoders(dev_priv) & BIT(pipe_config->cpu_transcoder)) {
+		tmp = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(pipe_config->cpu_transcoder));
+
+		if ((tmp & TRANS_DDI_EDP_INPUT_MASK) == TRANS_DDI_EDP_INPUT_A_ONOFF)
+			pipe_config->pch_pfit.force_thru = true;
+	}
+
+	tmp = intel_de_read(dev_priv, PIPECONF(pipe_config->cpu_transcoder));
+
+	return tmp & PIPECONF_ENABLE;
+}
+
+static bool bxt_get_dsi_transcoder_state(struct intel_crtc *crtc,
+					 struct intel_crtc_state *pipe_config,
+					 struct intel_display_power_domain_set *power_domain_set)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	enum transcoder cpu_transcoder;
+	enum port port;
+	u32 tmp;
+
+	for_each_port_masked(port, BIT(PORT_A) | BIT(PORT_C)) {
+		if (port == PORT_A)
+			cpu_transcoder = TRANSCODER_DSI_A;
+		else
+			cpu_transcoder = TRANSCODER_DSI_C;
+
+		if (!intel_display_power_get_in_set_if_enabled(dev_priv, power_domain_set,
+							       POWER_DOMAIN_TRANSCODER(cpu_transcoder)))
+			continue;
+
+		/*
+		 * The PLL needs to be enabled with a valid divider
+		 * configuration, otherwise accessing DSI registers will hang
+		 * the machine. See BSpec North Display Engine
+		 * registers/MIPI[BXT]. We can break out here early, since we
+		 * need the same DSI PLL to be enabled for both DSI ports.
+		 */
+		if (!bxt_dsi_pll_is_enabled(dev_priv))
+			break;
+
+		/* XXX: this works for video mode only */
+		tmp = intel_de_read(dev_priv, BXT_MIPI_PORT_CTRL(port));
+		if (!(tmp & DPI_ENABLE))
+			continue;
+
+		tmp = intel_de_read(dev_priv, MIPI_CTRL(port));
+		if ((tmp & BXT_PIPE_SELECT_MASK) != BXT_PIPE_SELECT(crtc->pipe))
+			continue;
+
+		pipe_config->cpu_transcoder = cpu_transcoder;
+		break;
+	}
+
+	return transcoder_is_dsi(pipe_config->cpu_transcoder);
+}
+
+static void intel_bigjoiner_get_config(struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	u8 master_pipes, slave_pipes;
+	enum pipe pipe = crtc->pipe;
+
+	enabled_bigjoiner_pipes(i915, &master_pipes, &slave_pipes);
+
+	if (((master_pipes | slave_pipes) & BIT(pipe)) == 0)
+		return;
+
+	crtc_state->bigjoiner_pipes =
+		BIT(get_bigjoiner_master_pipe(pipe, master_pipes, slave_pipes)) |
+		get_bigjoiner_slave_pipes(pipe, master_pipes, slave_pipes);
+}
+
+static bool hsw_get_pipe_config(struct intel_crtc *crtc,
+				struct intel_crtc_state *pipe_config)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	struct intel_display_power_domain_set power_domain_set = { };
+	bool active;
+	u32 tmp;
+
+	if (!intel_display_power_get_in_set_if_enabled(dev_priv, &power_domain_set,
+						       POWER_DOMAIN_PIPE(crtc->pipe)))
+		return false;
+
+	pipe_config->shared_dpll = NULL;
+
+	active = hsw_get_transcoder_state(crtc, pipe_config, &power_domain_set);
+
+	if ((IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) &&
+	    bxt_get_dsi_transcoder_state(crtc, pipe_config, &power_domain_set)) {
+		drm_WARN_ON(&dev_priv->drm, active);
+		active = true;
+	}
+
+	if (!active)
+		goto out;
+
+	intel_dsc_get_config(pipe_config);
+	intel_bigjoiner_get_config(pipe_config);
+
+	if (!transcoder_is_dsi(pipe_config->cpu_transcoder) ||
+	    DISPLAY_VER(dev_priv) >= 11)
+		intel_get_transcoder_timings(crtc, pipe_config);
+
+	if (HAS_VRR(dev_priv) && !transcoder_is_dsi(pipe_config->cpu_transcoder))
+		intel_vrr_get_config(crtc, pipe_config);
+
+	intel_get_pipe_src_size(crtc, pipe_config);
+
+	if (IS_HASWELL(dev_priv)) {
+		u32 tmp = intel_de_read(dev_priv,
+					PIPECONF(pipe_config->cpu_transcoder));
+
+		if (tmp & PIPECONF_OUTPUT_COLORSPACE_YUV_HSW)
+			pipe_config->output_format = INTEL_OUTPUT_FORMAT_YCBCR444;
+		else
+			pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
+	} else {
+		pipe_config->output_format =
+			bdw_get_pipemisc_output_format(crtc);
+	}
+
+	pipe_config->gamma_mode = intel_de_read(dev_priv,
+						GAMMA_MODE(crtc->pipe));
+
+	pipe_config->csc_mode = intel_de_read(dev_priv,
+					      PIPE_CSC_MODE(crtc->pipe));
+
+	if (DISPLAY_VER(dev_priv) >= 9) {
+		tmp = intel_de_read(dev_priv, SKL_BOTTOM_COLOR(crtc->pipe));
+
+		if (tmp & SKL_BOTTOM_COLOR_GAMMA_ENABLE)
+			pipe_config->gamma_enable = true;
+
+		if (tmp & SKL_BOTTOM_COLOR_CSC_ENABLE)
+			pipe_config->csc_enable = true;
+	} else {
+		i9xx_get_pipe_color_config(pipe_config);
+	}
+
+	intel_color_get_config(pipe_config);
+
+	tmp = intel_de_read(dev_priv, WM_LINETIME(crtc->pipe));
+	pipe_config->linetime = REG_FIELD_GET(HSW_LINETIME_MASK, tmp);
+	if (IS_BROADWELL(dev_priv) || IS_HASWELL(dev_priv))
+		pipe_config->ips_linetime =
+			REG_FIELD_GET(HSW_IPS_LINETIME_MASK, tmp);
+
+	if (intel_display_power_get_in_set_if_enabled(dev_priv, &power_domain_set,
+						      POWER_DOMAIN_PIPE_PANEL_FITTER(crtc->pipe))) {
+		if (DISPLAY_VER(dev_priv) >= 9)
+			skl_get_pfit_config(pipe_config);
+		else
+			ilk_get_pfit_config(pipe_config);
+	}
+
+	hsw_ips_get_config(pipe_config);
+
+	if (pipe_config->cpu_transcoder != TRANSCODER_EDP &&
+	    !transcoder_is_dsi(pipe_config->cpu_transcoder)) {
+		pipe_config->pixel_multiplier =
+			intel_de_read(dev_priv,
+				      PIPE_MULT(pipe_config->cpu_transcoder)) + 1;
+	} else {
+		pipe_config->pixel_multiplier = 1;
+	}
+
+	if (!transcoder_is_dsi(pipe_config->cpu_transcoder)) {
+		tmp = intel_de_read(dev_priv, DISPLAY_VER(dev_priv) >= 14 ?
+				    MTL_CHICKEN_TRANS(pipe_config->cpu_transcoder) :
+				    CHICKEN_TRANS(pipe_config->cpu_transcoder));
+
+		pipe_config->framestart_delay = REG_FIELD_GET(HSW_FRAME_START_DELAY_MASK, tmp) + 1;
+	} else {
+		/* no idea if this is correct */
+		pipe_config->framestart_delay = 1;
+	}
+
+out:
+	intel_display_power_put_all_in_set(dev_priv, &power_domain_set);
+
+	return active;
+}
+
+bool intel_crtc_get_pipe_config(struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+
+	if (!i915->display.funcs.display->get_pipe_config(crtc, crtc_state))
+		return false;
+
+	crtc_state->hw.active = true;
+
+	intel_crtc_readout_derived_state(crtc_state);
+
+	return true;
+}
+
+/* VESA 640x480x72Hz mode to set on the pipe */
+static const struct drm_display_mode load_detect_mode = {
+	DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT, 31500, 640, 664,
+		 704, 832, 0, 480, 489, 491, 520, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
+};
+
+static int intel_modeset_disable_planes(struct drm_atomic_state *state,
+					struct drm_crtc *crtc)
+{
+	struct drm_plane *plane;
+	struct drm_plane_state *plane_state;
+	int ret, i;
+
+	ret = drm_atomic_add_affected_planes(state, crtc);
+	if (ret)
+		return ret;
+
+	for_each_new_plane_in_state(state, plane, plane_state, i) {
+		if (plane_state->crtc != crtc)
+			continue;
+
+		ret = drm_atomic_set_crtc_for_plane(plane_state, NULL);
+		if (ret)
+			return ret;
+
+		drm_atomic_set_fb_for_plane(plane_state, NULL);
+	}
+
+	return 0;
+}
+
+int intel_get_load_detect_pipe(struct drm_connector *connector,
+			       struct intel_load_detect_pipe *old,
+			       struct drm_modeset_acquire_ctx *ctx)
+{
+	struct intel_encoder *encoder =
+		intel_attached_encoder(to_intel_connector(connector));
+	struct intel_crtc *possible_crtc;
+	struct intel_crtc *crtc = NULL;
+	struct drm_device *dev = encoder->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct drm_mode_config *config = &dev->mode_config;
+	struct drm_atomic_state *state = NULL, *restore_state = NULL;
+	struct drm_connector_state *connector_state;
+	struct intel_crtc_state *crtc_state;
+	int ret;
+
+	drm_dbg_kms(&dev_priv->drm, "[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
+		    connector->base.id, connector->name,
+		    encoder->base.base.id, encoder->base.name);
+
+	old->restore_state = NULL;
+
+	drm_WARN_ON(dev, !drm_modeset_is_locked(&config->connection_mutex));
+
+	/*
+	 * Algorithm gets a little messy:
+	 *
+	 *   - if the connector already has an assigned crtc, use it (but make
+	 *     sure it's on first)
+	 *
+	 *   - try to find the first unused crtc that can drive this connector,
+	 *     and use that if we find one
+	 */
+
+	/* See if we already have a CRTC for this connector */
+	if (connector->state->crtc) {
+		crtc = to_intel_crtc(connector->state->crtc);
+
+		ret = drm_modeset_lock(&crtc->base.mutex, ctx);
+		if (ret)
+			goto fail;
+
+		/* Make sure the crtc and connector are running */
+		goto found;
+	}
+
+	/* Find an unused one (if possible) */
+	for_each_intel_crtc(dev, possible_crtc) {
+		if (!(encoder->base.possible_crtcs &
+		      drm_crtc_mask(&possible_crtc->base)))
+			continue;
+
+		ret = drm_modeset_lock(&possible_crtc->base.mutex, ctx);
+		if (ret)
+			goto fail;
+
+		if (possible_crtc->base.state->enable) {
+			drm_modeset_unlock(&possible_crtc->base.mutex);
+			continue;
+		}
+
+		crtc = possible_crtc;
+		break;
+	}
+
+	/*
+	 * If we didn't find an unused CRTC, don't use any.
+	 */
+	if (!crtc) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "no pipe available for load-detect\n");
+		ret = -ENODEV;
+		goto fail;
+	}
+
+found:
+	state = drm_atomic_state_alloc(dev);
+	restore_state = drm_atomic_state_alloc(dev);
+	if (!state || !restore_state) {
+		ret = -ENOMEM;
+		goto fail;
+	}
+
+	state->acquire_ctx = ctx;
+	restore_state->acquire_ctx = ctx;
+
+	connector_state = drm_atomic_get_connector_state(state, connector);
+	if (IS_ERR(connector_state)) {
+		ret = PTR_ERR(connector_state);
+		goto fail;
+	}
+
+	ret = drm_atomic_set_crtc_for_connector(connector_state, &crtc->base);
+	if (ret)
+		goto fail;
+
+	crtc_state = intel_atomic_get_crtc_state(state, crtc);
+	if (IS_ERR(crtc_state)) {
+		ret = PTR_ERR(crtc_state);
+		goto fail;
+	}
+
+	crtc_state->uapi.active = true;
+
+	ret = drm_atomic_set_mode_for_crtc(&crtc_state->uapi,
+					   &load_detect_mode);
+	if (ret)
+		goto fail;
+
+	ret = intel_modeset_disable_planes(state, &crtc->base);
+	if (ret)
+		goto fail;
+
+	ret = PTR_ERR_OR_ZERO(drm_atomic_get_connector_state(restore_state, connector));
+	if (!ret)
+		ret = PTR_ERR_OR_ZERO(drm_atomic_get_crtc_state(restore_state, &crtc->base));
+	if (!ret)
+		ret = drm_atomic_add_affected_planes(restore_state, &crtc->base);
+	if (ret) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Failed to create a copy of old state to restore: %i\n",
+			    ret);
+		goto fail;
+	}
+
+	ret = drm_atomic_commit(state);
+	if (ret) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "failed to set mode on load-detect pipe\n");
+		goto fail;
+	}
+
+	old->restore_state = restore_state;
+	drm_atomic_state_put(state);
+
+	/* let the connector get through one full cycle before testing */
+	intel_crtc_wait_for_next_vblank(crtc);
+
+	return true;
+
+fail:
+	if (state) {
+		drm_atomic_state_put(state);
+		state = NULL;
+	}
+	if (restore_state) {
+		drm_atomic_state_put(restore_state);
+		restore_state = NULL;
+	}
+
+	if (ret == -EDEADLK)
+		return ret;
+
+	return false;
+}
+
+void intel_release_load_detect_pipe(struct drm_connector *connector,
+				    struct intel_load_detect_pipe *old,
+				    struct drm_modeset_acquire_ctx *ctx)
+{
+	struct intel_encoder *intel_encoder =
+		intel_attached_encoder(to_intel_connector(connector));
+	struct drm_i915_private *i915 = to_i915(intel_encoder->base.dev);
+	struct drm_encoder *encoder = &intel_encoder->base;
+	struct drm_atomic_state *state = old->restore_state;
+	int ret;
+
+	drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
+		    connector->base.id, connector->name,
+		    encoder->base.id, encoder->name);
+
+	if (!state)
+		return;
+
+	ret = drm_atomic_helper_commit_duplicated_state(state, ctx);
+	if (ret)
+		drm_dbg_kms(&i915->drm,
+			    "Couldn't release load detect pipe: %i\n", ret);
+	drm_atomic_state_put(state);
+}
+
+static int i9xx_pll_refclk(struct drm_device *dev,
+			   const struct intel_crtc_state *pipe_config)
+{
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	u32 dpll = pipe_config->dpll_hw_state.dpll;
+
+	if ((dpll & PLL_REF_INPUT_MASK) == PLLB_REF_INPUT_SPREADSPECTRUMIN)
+		return dev_priv->display.vbt.lvds_ssc_freq;
+	else if (HAS_PCH_SPLIT(dev_priv))
+		return 120000;
+	else if (DISPLAY_VER(dev_priv) != 2)
+		return 96000;
+	else
+		return 48000;
+}
+
+/* Returns the clock of the currently programmed mode of the given pipe. */
+void i9xx_crtc_clock_get(struct intel_crtc *crtc,
+			 struct intel_crtc_state *pipe_config)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	u32 dpll = pipe_config->dpll_hw_state.dpll;
+	u32 fp;
+	struct dpll clock;
+	int port_clock;
+	int refclk = i9xx_pll_refclk(dev, pipe_config);
+
+	if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0)
+		fp = pipe_config->dpll_hw_state.fp0;
+	else
+		fp = pipe_config->dpll_hw_state.fp1;
+
+	clock.m1 = (fp & FP_M1_DIV_MASK) >> FP_M1_DIV_SHIFT;
+	if (IS_PINEVIEW(dev_priv)) {
+		clock.n = ffs((fp & FP_N_PINEVIEW_DIV_MASK) >> FP_N_DIV_SHIFT) - 1;
+		clock.m2 = (fp & FP_M2_PINEVIEW_DIV_MASK) >> FP_M2_DIV_SHIFT;
+	} else {
+		clock.n = (fp & FP_N_DIV_MASK) >> FP_N_DIV_SHIFT;
+		clock.m2 = (fp & FP_M2_DIV_MASK) >> FP_M2_DIV_SHIFT;
+	}
+
+	if (DISPLAY_VER(dev_priv) != 2) {
+		if (IS_PINEVIEW(dev_priv))
+			clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_PINEVIEW) >>
+				DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW);
+		else
+			clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK) >>
+			       DPLL_FPA01_P1_POST_DIV_SHIFT);
+
+		switch (dpll & DPLL_MODE_MASK) {
+		case DPLLB_MODE_DAC_SERIAL:
+			clock.p2 = dpll & DPLL_DAC_SERIAL_P2_CLOCK_DIV_5 ?
+				5 : 10;
+			break;
+		case DPLLB_MODE_LVDS:
+			clock.p2 = dpll & DPLLB_LVDS_P2_CLOCK_DIV_7 ?
+				7 : 14;
+			break;
+		default:
+			drm_dbg_kms(&dev_priv->drm,
+				    "Unknown DPLL mode %08x in programmed "
+				    "mode\n", (int)(dpll & DPLL_MODE_MASK));
+			return;
+		}
+
+		if (IS_PINEVIEW(dev_priv))
+			port_clock = pnv_calc_dpll_params(refclk, &clock);
+		else
+			port_clock = i9xx_calc_dpll_params(refclk, &clock);
+	} else {
+		enum pipe lvds_pipe;
+
+		if (IS_I85X(dev_priv) &&
+		    intel_lvds_port_enabled(dev_priv, LVDS, &lvds_pipe) &&
+		    lvds_pipe == crtc->pipe) {
+			u32 lvds = intel_de_read(dev_priv, LVDS);
+
+			clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS) >>
+				       DPLL_FPA01_P1_POST_DIV_SHIFT);
+
+			if (lvds & LVDS_CLKB_POWER_UP)
+				clock.p2 = 7;
+			else
+				clock.p2 = 14;
+		} else {
+			if (dpll & PLL_P1_DIVIDE_BY_TWO)
+				clock.p1 = 2;
+			else {
+				clock.p1 = ((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830) >>
+					    DPLL_FPA01_P1_POST_DIV_SHIFT) + 2;
+			}
+			if (dpll & PLL_P2_DIVIDE_BY_4)
+				clock.p2 = 4;
+			else
+				clock.p2 = 2;
+		}
+
+		port_clock = i9xx_calc_dpll_params(refclk, &clock);
+	}
+
+	/*
+	 * This value includes pixel_multiplier. We will use
+	 * port_clock to compute adjusted_mode.crtc_clock in the
+	 * encoder's get_config() function.
+	 */
+	pipe_config->port_clock = port_clock;
+}
+
+int intel_dotclock_calculate(int link_freq,
+			     const struct intel_link_m_n *m_n)
+{
+	/*
+	 * The calculation for the data clock is:
+	 * pixel_clock = ((m/n)*(link_clock * nr_lanes))/bpp
+	 * But we want to avoid losing precison if possible, so:
+	 * pixel_clock = ((m * link_clock * nr_lanes)/(n*bpp))
+	 *
+	 * and the link clock is simpler:
+	 * link_clock = (m * link_clock) / n
+	 */
+
+	if (!m_n->link_n)
+		return 0;
+
+	return DIV_ROUND_UP_ULL(mul_u32_u32(m_n->link_m, link_freq),
+				m_n->link_n);
+}
+
+int intel_crtc_dotclock(const struct intel_crtc_state *pipe_config)
+{
+	int dotclock;
+
+	if (intel_crtc_has_dp_encoder(pipe_config))
+		dotclock = intel_dotclock_calculate(pipe_config->port_clock,
+						    &pipe_config->dp_m_n);
+	else if (pipe_config->has_hdmi_sink && pipe_config->pipe_bpp > 24)
+		dotclock = DIV_ROUND_CLOSEST(pipe_config->port_clock * 24,
+					     pipe_config->pipe_bpp);
+	else
+		dotclock = pipe_config->port_clock;
+
+	if (pipe_config->output_format == INTEL_OUTPUT_FORMAT_YCBCR420 &&
+	    !intel_crtc_has_dp_encoder(pipe_config))
+		dotclock *= 2;
+
+	if (pipe_config->pixel_multiplier)
+		dotclock /= pipe_config->pixel_multiplier;
+
+	return dotclock;
+}
+
+/* Returns the currently programmed mode of the given encoder. */
+struct drm_display_mode *
+intel_encoder_current_mode(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc_state *crtc_state;
+	struct drm_display_mode *mode;
+	struct intel_crtc *crtc;
+	enum pipe pipe;
+
+	if (!encoder->get_hw_state(encoder, &pipe))
+		return NULL;
+
+	crtc = intel_crtc_for_pipe(dev_priv, pipe);
+
+	mode = kzalloc(sizeof(*mode), GFP_KERNEL);
+	if (!mode)
+		return NULL;
+
+	crtc_state = intel_crtc_state_alloc(crtc);
+	if (!crtc_state) {
+		kfree(mode);
+		return NULL;
+	}
+
+	if (!intel_crtc_get_pipe_config(crtc_state)) {
+		kfree(crtc_state);
+		kfree(mode);
+		return NULL;
+	}
+
+	intel_encoder_get_config(encoder, crtc_state);
+
+	intel_mode_from_crtc_timings(mode, &crtc_state->hw.adjusted_mode);
+
+	kfree(crtc_state);
+
+	return mode;
+}
+
+static bool encoders_cloneable(const struct intel_encoder *a,
+			       const struct intel_encoder *b)
+{
+	/* masks could be asymmetric, so check both ways */
+	return a == b || (a->cloneable & (1 << b->type) &&
+			  b->cloneable & (1 << a->type));
+}
+
+static bool check_single_encoder_cloning(struct intel_atomic_state *state,
+					 struct intel_crtc *crtc,
+					 struct intel_encoder *encoder)
+{
+	struct intel_encoder *source_encoder;
+	struct drm_connector *connector;
+	struct drm_connector_state *connector_state;
+	int i;
+
+	for_each_new_connector_in_state(&state->base, connector, connector_state, i) {
+		if (connector_state->crtc != &crtc->base)
+			continue;
+
+		source_encoder =
+			to_intel_encoder(connector_state->best_encoder);
+		if (!encoders_cloneable(encoder, source_encoder))
+			return false;
+	}
+
+	return true;
+}
+
+static int icl_add_linked_planes(struct intel_atomic_state *state)
+{
+	struct intel_plane *plane, *linked;
+	struct intel_plane_state *plane_state, *linked_plane_state;
+	int i;
+
+	for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
+		linked = plane_state->planar_linked_plane;
+
+		if (!linked)
+			continue;
+
+		linked_plane_state = intel_atomic_get_plane_state(state, linked);
+		if (IS_ERR(linked_plane_state))
+			return PTR_ERR(linked_plane_state);
+
+		drm_WARN_ON(state->base.dev,
+			    linked_plane_state->planar_linked_plane != plane);
+		drm_WARN_ON(state->base.dev,
+			    linked_plane_state->planar_slave == plane_state->planar_slave);
+	}
+
+	return 0;
+}
+
+static int icl_check_nv12_planes(struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	struct intel_atomic_state *state = to_intel_atomic_state(crtc_state->uapi.state);
+	struct intel_plane *plane, *linked;
+	struct intel_plane_state *plane_state;
+	int i;
+
+	if (DISPLAY_VER(dev_priv) < 11)
+		return 0;
+
+	/*
+	 * Destroy all old plane links and make the slave plane invisible
+	 * in the crtc_state->active_planes mask.
+	 */
+	for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
+		if (plane->pipe != crtc->pipe || !plane_state->planar_linked_plane)
+			continue;
+
+		plane_state->planar_linked_plane = NULL;
+		if (plane_state->planar_slave && !plane_state->uapi.visible) {
+			crtc_state->enabled_planes &= ~BIT(plane->id);
+			crtc_state->active_planes &= ~BIT(plane->id);
+			crtc_state->update_planes |= BIT(plane->id);
+			crtc_state->data_rate[plane->id] = 0;
+			crtc_state->rel_data_rate[plane->id] = 0;
+		}
+
+		plane_state->planar_slave = false;
+	}
+
+	if (!crtc_state->nv12_planes)
+		return 0;
+
+	for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
+		struct intel_plane_state *linked_state = NULL;
+
+		if (plane->pipe != crtc->pipe ||
+		    !(crtc_state->nv12_planes & BIT(plane->id)))
+			continue;
+
+		for_each_intel_plane_on_crtc(&dev_priv->drm, crtc, linked) {
+			if (!icl_is_nv12_y_plane(dev_priv, linked->id))
+				continue;
+
+			if (crtc_state->active_planes & BIT(linked->id))
+				continue;
+
+			linked_state = intel_atomic_get_plane_state(state, linked);
+			if (IS_ERR(linked_state))
+				return PTR_ERR(linked_state);
+
+			break;
+		}
+
+		if (!linked_state) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "Need %d free Y planes for planar YUV\n",
+				    hweight8(crtc_state->nv12_planes));
+
+			return -EINVAL;
+		}
+
+		plane_state->planar_linked_plane = linked;
+
+		linked_state->planar_slave = true;
+		linked_state->planar_linked_plane = plane;
+		crtc_state->enabled_planes |= BIT(linked->id);
+		crtc_state->active_planes |= BIT(linked->id);
+		crtc_state->update_planes |= BIT(linked->id);
+		crtc_state->data_rate[linked->id] =
+			crtc_state->data_rate_y[plane->id];
+		crtc_state->rel_data_rate[linked->id] =
+			crtc_state->rel_data_rate_y[plane->id];
+		drm_dbg_kms(&dev_priv->drm, "Using %s as Y plane for %s\n",
+			    linked->base.name, plane->base.name);
+
+		/* Copy parameters to slave plane */
+		linked_state->ctl = plane_state->ctl | PLANE_CTL_YUV420_Y_PLANE;
+		linked_state->color_ctl = plane_state->color_ctl;
+		linked_state->view = plane_state->view;
+		linked_state->decrypt = plane_state->decrypt;
+
+		intel_plane_copy_hw_state(linked_state, plane_state);
+		linked_state->uapi.src = plane_state->uapi.src;
+		linked_state->uapi.dst = plane_state->uapi.dst;
+
+		if (icl_is_hdr_plane(dev_priv, plane->id)) {
+			if (linked->id == PLANE_SPRITE5)
+				plane_state->cus_ctl |= PLANE_CUS_Y_PLANE_7_ICL;
+			else if (linked->id == PLANE_SPRITE4)
+				plane_state->cus_ctl |= PLANE_CUS_Y_PLANE_6_ICL;
+			else if (linked->id == PLANE_SPRITE3)
+				plane_state->cus_ctl |= PLANE_CUS_Y_PLANE_5_RKL;
+			else if (linked->id == PLANE_SPRITE2)
+				plane_state->cus_ctl |= PLANE_CUS_Y_PLANE_4_RKL;
+			else
+				MISSING_CASE(linked->id);
+		}
+	}
+
+	return 0;
+}
+
+static bool c8_planes_changed(const struct intel_crtc_state *new_crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->uapi.crtc);
+	struct intel_atomic_state *state =
+		to_intel_atomic_state(new_crtc_state->uapi.state);
+	const struct intel_crtc_state *old_crtc_state =
+		intel_atomic_get_old_crtc_state(state, crtc);
+
+	return !old_crtc_state->c8_planes != !new_crtc_state->c8_planes;
+}
+
+static u16 hsw_linetime_wm(const struct intel_crtc_state *crtc_state)
+{
+	const struct drm_display_mode *pipe_mode =
+		&crtc_state->hw.pipe_mode;
+	int linetime_wm;
+
+	if (!crtc_state->hw.enable)
+		return 0;
+
+	linetime_wm = DIV_ROUND_CLOSEST(pipe_mode->crtc_htotal * 1000 * 8,
+					pipe_mode->crtc_clock);
+
+	return min(linetime_wm, 0x1ff);
+}
+
+static u16 hsw_ips_linetime_wm(const struct intel_crtc_state *crtc_state,
+			       const struct intel_cdclk_state *cdclk_state)
+{
+	const struct drm_display_mode *pipe_mode =
+		&crtc_state->hw.pipe_mode;
+	int linetime_wm;
+
+	if (!crtc_state->hw.enable)
+		return 0;
+
+	linetime_wm = DIV_ROUND_CLOSEST(pipe_mode->crtc_htotal * 1000 * 8,
+					cdclk_state->logical.cdclk);
+
+	return min(linetime_wm, 0x1ff);
+}
+
+static u16 skl_linetime_wm(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	const struct drm_display_mode *pipe_mode =
+		&crtc_state->hw.pipe_mode;
+	int linetime_wm;
+
+	if (!crtc_state->hw.enable)
+		return 0;
+
+	linetime_wm = DIV_ROUND_UP(pipe_mode->crtc_htotal * 1000 * 8,
+				   crtc_state->pixel_rate);
+
+	/* Display WA #1135: BXT:ALL GLK:ALL */
+	if ((IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) &&
+	    skl_watermark_ipc_enabled(dev_priv))
+		linetime_wm /= 2;
+
+	return min(linetime_wm, 0x1ff);
+}
+
+static int hsw_compute_linetime_wm(struct intel_atomic_state *state,
+				   struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	const struct intel_cdclk_state *cdclk_state;
+
+	if (DISPLAY_VER(dev_priv) >= 9)
+		crtc_state->linetime = skl_linetime_wm(crtc_state);
+	else
+		crtc_state->linetime = hsw_linetime_wm(crtc_state);
+
+	if (!hsw_crtc_supports_ips(crtc))
+		return 0;
+
+	cdclk_state = intel_atomic_get_cdclk_state(state);
+	if (IS_ERR(cdclk_state))
+		return PTR_ERR(cdclk_state);
+
+	crtc_state->ips_linetime = hsw_ips_linetime_wm(crtc_state,
+						       cdclk_state);
+
+	return 0;
+}
+
+static int intel_crtc_atomic_check(struct intel_atomic_state *state,
+				   struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	bool mode_changed = intel_crtc_needs_modeset(crtc_state);
+	int ret;
+
+	if (DISPLAY_VER(dev_priv) < 5 && !IS_G4X(dev_priv) &&
+	    mode_changed && !crtc_state->hw.active)
+		crtc_state->update_wm_post = true;
+
+	if (mode_changed) {
+		ret = intel_dpll_crtc_get_shared_dpll(state, crtc);
+		if (ret)
+			return ret;
+	}
+
+	/*
+	 * May need to update pipe gamma enable bits
+	 * when C8 planes are getting enabled/disabled.
+	 */
+	if (c8_planes_changed(crtc_state))
+		crtc_state->uapi.color_mgmt_changed = true;
+
+	if (mode_changed || crtc_state->update_pipe ||
+	    crtc_state->uapi.color_mgmt_changed) {
+		ret = intel_color_check(crtc_state);
+		if (ret)
+			return ret;
+	}
+
+	ret = intel_compute_pipe_wm(state, crtc);
+	if (ret) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Target pipe watermarks are invalid\n");
+		return ret;
+	}
+
+	/*
+	 * Calculate 'intermediate' watermarks that satisfy both the
+	 * old state and the new state.  We can program these
+	 * immediately.
+	 */
+	ret = intel_compute_intermediate_wm(state, crtc);
+	if (ret) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "No valid intermediate pipe watermarks are possible\n");
+		return ret;
+	}
+
+	if (DISPLAY_VER(dev_priv) >= 9) {
+		if (mode_changed || crtc_state->update_pipe) {
+			ret = skl_update_scaler_crtc(crtc_state);
+			if (ret)
+				return ret;
+		}
+
+		ret = intel_atomic_setup_scalers(dev_priv, crtc, crtc_state);
+		if (ret)
+			return ret;
+	}
+
+	if (HAS_IPS(dev_priv)) {
+		ret = hsw_ips_compute_config(state, crtc);
+		if (ret)
+			return ret;
+	}
+
+	if (DISPLAY_VER(dev_priv) >= 9 ||
+	    IS_BROADWELL(dev_priv) || IS_HASWELL(dev_priv)) {
+		ret = hsw_compute_linetime_wm(state, crtc);
+		if (ret)
+			return ret;
+
+	}
+
+	ret = intel_psr2_sel_fetch_update(state, crtc);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static int
+compute_sink_pipe_bpp(const struct drm_connector_state *conn_state,
+		      struct intel_crtc_state *crtc_state)
+{
+	struct drm_connector *connector = conn_state->connector;
+	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+	const struct drm_display_info *info = &connector->display_info;
+	int bpp;
+
+	switch (conn_state->max_bpc) {
+	case 6 ... 7:
+		bpp = 6 * 3;
+		break;
+	case 8 ... 9:
+		bpp = 8 * 3;
+		break;
+	case 10 ... 11:
+		bpp = 10 * 3;
+		break;
+	case 12 ... 16:
+		bpp = 12 * 3;
+		break;
+	default:
+		MISSING_CASE(conn_state->max_bpc);
+		return -EINVAL;
+	}
+
+	if (bpp < crtc_state->pipe_bpp) {
+		drm_dbg_kms(&i915->drm,
+			    "[CONNECTOR:%d:%s] Limiting display bpp to %d "
+			    "(EDID bpp %d, max requested bpp %d, max platform bpp %d)\n",
+			    connector->base.id, connector->name,
+			    bpp, 3 * info->bpc,
+			    3 * conn_state->max_requested_bpc,
+			    crtc_state->pipe_bpp);
+
+		crtc_state->pipe_bpp = bpp;
+	}
+
+	return 0;
+}
+
+static int
+compute_baseline_pipe_bpp(struct intel_atomic_state *state,
+			  struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	struct drm_connector *connector;
+	struct drm_connector_state *connector_state;
+	int bpp, i;
+
+	if ((IS_G4X(dev_priv) || IS_VALLEYVIEW(dev_priv) ||
+	    IS_CHERRYVIEW(dev_priv)))
+		bpp = 10*3;
+	else if (DISPLAY_VER(dev_priv) >= 5)
+		bpp = 12*3;
+	else
+		bpp = 8*3;
+
+	crtc_state->pipe_bpp = bpp;
+
+	/* Clamp display bpp to connector max bpp */
+	for_each_new_connector_in_state(&state->base, connector, connector_state, i) {
+		int ret;
+
+		if (connector_state->crtc != &crtc->base)
+			continue;
+
+		ret = compute_sink_pipe_bpp(connector_state, crtc_state);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static bool check_digital_port_conflicts(struct intel_atomic_state *state)
+{
+	struct drm_device *dev = state->base.dev;
+	struct drm_connector *connector;
+	struct drm_connector_list_iter conn_iter;
+	unsigned int used_ports = 0;
+	unsigned int used_mst_ports = 0;
+	bool ret = true;
+
+	/*
+	 * We're going to peek into connector->state,
+	 * hence connection_mutex must be held.
+	 */
+	drm_modeset_lock_assert_held(&dev->mode_config.connection_mutex);
+
+	/*
+	 * Walk the connector list instead of the encoder
+	 * list to detect the problem on ddi platforms
+	 * where there's just one encoder per digital port.
+	 */
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	drm_for_each_connector_iter(connector, &conn_iter) {
+		struct drm_connector_state *connector_state;
+		struct intel_encoder *encoder;
+
+		connector_state =
+			drm_atomic_get_new_connector_state(&state->base,
+							   connector);
+		if (!connector_state)
+			connector_state = connector->state;
+
+		if (!connector_state->best_encoder)
+			continue;
+
+		encoder = to_intel_encoder(connector_state->best_encoder);
+
+		drm_WARN_ON(dev, !connector_state->crtc);
+
+		switch (encoder->type) {
+		case INTEL_OUTPUT_DDI:
+			if (drm_WARN_ON(dev, !HAS_DDI(to_i915(dev))))
+				break;
+			fallthrough;
+		case INTEL_OUTPUT_DP:
+		case INTEL_OUTPUT_HDMI:
+		case INTEL_OUTPUT_EDP:
+			/* the same port mustn't appear more than once */
+			if (used_ports & BIT(encoder->port))
+				ret = false;
+
+			used_ports |= BIT(encoder->port);
+			break;
+		case INTEL_OUTPUT_DP_MST:
+			used_mst_ports |=
+				1 << encoder->port;
+			break;
+		default:
+			break;
+		}
+	}
+	drm_connector_list_iter_end(&conn_iter);
+
+	/* can't mix MST and SST/HDMI on the same port */
+	if (used_ports & used_mst_ports)
+		return false;
+
+	return ret;
+}
+
+static void
+intel_crtc_copy_uapi_to_hw_state_nomodeset(struct intel_atomic_state *state,
+					   struct intel_crtc *crtc)
+{
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+
+	WARN_ON(intel_crtc_is_bigjoiner_slave(crtc_state));
+
+	drm_property_replace_blob(&crtc_state->hw.degamma_lut,
+				  crtc_state->uapi.degamma_lut);
+	drm_property_replace_blob(&crtc_state->hw.gamma_lut,
+				  crtc_state->uapi.gamma_lut);
+	drm_property_replace_blob(&crtc_state->hw.ctm,
+				  crtc_state->uapi.ctm);
+}
+
+static void
+intel_crtc_copy_uapi_to_hw_state_modeset(struct intel_atomic_state *state,
+					 struct intel_crtc *crtc)
+{
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+
+	WARN_ON(intel_crtc_is_bigjoiner_slave(crtc_state));
+
+	crtc_state->hw.enable = crtc_state->uapi.enable;
+	crtc_state->hw.active = crtc_state->uapi.active;
+	drm_mode_copy(&crtc_state->hw.mode,
+		      &crtc_state->uapi.mode);
+	drm_mode_copy(&crtc_state->hw.adjusted_mode,
+		      &crtc_state->uapi.adjusted_mode);
+	crtc_state->hw.scaling_filter = crtc_state->uapi.scaling_filter;
+
+	intel_crtc_copy_uapi_to_hw_state_nomodeset(state, crtc);
+}
+
+static void
+copy_bigjoiner_crtc_state_nomodeset(struct intel_atomic_state *state,
+				    struct intel_crtc *slave_crtc)
+{
+	struct intel_crtc_state *slave_crtc_state =
+		intel_atomic_get_new_crtc_state(state, slave_crtc);
+	struct intel_crtc *master_crtc = intel_master_crtc(slave_crtc_state);
+	const struct intel_crtc_state *master_crtc_state =
+		intel_atomic_get_new_crtc_state(state, master_crtc);
+
+	drm_property_replace_blob(&slave_crtc_state->hw.degamma_lut,
+				  master_crtc_state->hw.degamma_lut);
+	drm_property_replace_blob(&slave_crtc_state->hw.gamma_lut,
+				  master_crtc_state->hw.gamma_lut);
+	drm_property_replace_blob(&slave_crtc_state->hw.ctm,
+				  master_crtc_state->hw.ctm);
+
+	slave_crtc_state->uapi.color_mgmt_changed = master_crtc_state->uapi.color_mgmt_changed;
+}
+
+static int
+copy_bigjoiner_crtc_state_modeset(struct intel_atomic_state *state,
+				  struct intel_crtc *slave_crtc)
+{
+	struct intel_crtc_state *slave_crtc_state =
+		intel_atomic_get_new_crtc_state(state, slave_crtc);
+	struct intel_crtc *master_crtc = intel_master_crtc(slave_crtc_state);
+	const struct intel_crtc_state *master_crtc_state =
+		intel_atomic_get_new_crtc_state(state, master_crtc);
+	struct intel_crtc_state *saved_state;
+
+	WARN_ON(master_crtc_state->bigjoiner_pipes !=
+		slave_crtc_state->bigjoiner_pipes);
+
+	saved_state = kmemdup(master_crtc_state, sizeof(*saved_state), GFP_KERNEL);
+	if (!saved_state)
+		return -ENOMEM;
+
+	/* preserve some things from the slave's original crtc state */
+	saved_state->uapi = slave_crtc_state->uapi;
+	saved_state->scaler_state = slave_crtc_state->scaler_state;
+	saved_state->shared_dpll = slave_crtc_state->shared_dpll;
+	saved_state->crc_enabled = slave_crtc_state->crc_enabled;
+
+	intel_crtc_free_hw_state(slave_crtc_state);
+	memcpy(slave_crtc_state, saved_state, sizeof(*slave_crtc_state));
+	kfree(saved_state);
+
+	/* Re-init hw state */
+	memset(&slave_crtc_state->hw, 0, sizeof(slave_crtc_state->hw));
+	slave_crtc_state->hw.enable = master_crtc_state->hw.enable;
+	slave_crtc_state->hw.active = master_crtc_state->hw.active;
+	drm_mode_copy(&slave_crtc_state->hw.mode,
+		      &master_crtc_state->hw.mode);
+	drm_mode_copy(&slave_crtc_state->hw.pipe_mode,
+		      &master_crtc_state->hw.pipe_mode);
+	drm_mode_copy(&slave_crtc_state->hw.adjusted_mode,
+		      &master_crtc_state->hw.adjusted_mode);
+	slave_crtc_state->hw.scaling_filter = master_crtc_state->hw.scaling_filter;
+
+	copy_bigjoiner_crtc_state_nomodeset(state, slave_crtc);
+
+	slave_crtc_state->uapi.mode_changed = master_crtc_state->uapi.mode_changed;
+	slave_crtc_state->uapi.connectors_changed = master_crtc_state->uapi.connectors_changed;
+	slave_crtc_state->uapi.active_changed = master_crtc_state->uapi.active_changed;
+
+	WARN_ON(master_crtc_state->bigjoiner_pipes !=
+		slave_crtc_state->bigjoiner_pipes);
+
+	return 0;
+}
+
+static int
+intel_crtc_prepare_cleared_state(struct intel_atomic_state *state,
+				 struct intel_crtc *crtc)
+{
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	struct intel_crtc_state *saved_state;
+
+	saved_state = intel_crtc_state_alloc(crtc);
+	if (!saved_state)
+		return -ENOMEM;
+
+	/* free the old crtc_state->hw members */
+	intel_crtc_free_hw_state(crtc_state);
+
+	/* FIXME: before the switch to atomic started, a new pipe_config was
+	 * kzalloc'd. Code that depends on any field being zero should be
+	 * fixed, so that the crtc_state can be safely duplicated. For now,
+	 * only fields that are know to not cause problems are preserved. */
+
+	saved_state->uapi = crtc_state->uapi;
+	saved_state->inherited = crtc_state->inherited;
+	saved_state->scaler_state = crtc_state->scaler_state;
+	saved_state->shared_dpll = crtc_state->shared_dpll;
+	saved_state->dpll_hw_state = crtc_state->dpll_hw_state;
+	memcpy(saved_state->icl_port_dplls, crtc_state->icl_port_dplls,
+	       sizeof(saved_state->icl_port_dplls));
+	saved_state->crc_enabled = crtc_state->crc_enabled;
+	if (IS_G4X(dev_priv) ||
+	    IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
+		saved_state->wm = crtc_state->wm;
+
+	memcpy(crtc_state, saved_state, sizeof(*crtc_state));
+	kfree(saved_state);
+
+	intel_crtc_copy_uapi_to_hw_state_modeset(state, crtc);
+
+	return 0;
+}
+
+static int
+intel_modeset_pipe_config(struct intel_atomic_state *state,
+			  struct intel_crtc *crtc)
+{
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	struct drm_connector *connector;
+	struct drm_connector_state *connector_state;
+	int pipe_src_w, pipe_src_h;
+	int base_bpp, ret, i;
+	bool retry = true;
+
+	crtc_state->cpu_transcoder = (enum transcoder) crtc->pipe;
+
+	crtc_state->framestart_delay = 1;
+
+	/*
+	 * Sanitize sync polarity flags based on requested ones. If neither
+	 * positive or negative polarity is requested, treat this as meaning
+	 * negative polarity.
+	 */
+	if (!(crtc_state->hw.adjusted_mode.flags &
+	      (DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NHSYNC)))
+		crtc_state->hw.adjusted_mode.flags |= DRM_MODE_FLAG_NHSYNC;
+
+	if (!(crtc_state->hw.adjusted_mode.flags &
+	      (DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_NVSYNC)))
+		crtc_state->hw.adjusted_mode.flags |= DRM_MODE_FLAG_NVSYNC;
+
+	ret = compute_baseline_pipe_bpp(state, crtc);
+	if (ret)
+		return ret;
+
+	base_bpp = crtc_state->pipe_bpp;
+
+	/*
+	 * Determine the real pipe dimensions. Note that stereo modes can
+	 * increase the actual pipe size due to the frame doubling and
+	 * insertion of additional space for blanks between the frame. This
+	 * is stored in the crtc timings. We use the requested mode to do this
+	 * computation to clearly distinguish it from the adjusted mode, which
+	 * can be changed by the connectors in the below retry loop.
+	 */
+	drm_mode_get_hv_timing(&crtc_state->hw.mode,
+			       &pipe_src_w, &pipe_src_h);
+	drm_rect_init(&crtc_state->pipe_src, 0, 0,
+		      pipe_src_w, pipe_src_h);
+
+	for_each_new_connector_in_state(&state->base, connector, connector_state, i) {
+		struct intel_encoder *encoder =
+			to_intel_encoder(connector_state->best_encoder);
+
+		if (connector_state->crtc != &crtc->base)
+			continue;
+
+		if (!check_single_encoder_cloning(state, crtc, encoder)) {
+			drm_dbg_kms(&i915->drm,
+				    "[ENCODER:%d:%s] rejecting invalid cloning configuration\n",
+				    encoder->base.base.id, encoder->base.name);
+			return -EINVAL;
+		}
+
+		/*
+		 * Determine output_types before calling the .compute_config()
+		 * hooks so that the hooks can use this information safely.
+		 */
+		if (encoder->compute_output_type)
+			crtc_state->output_types |=
+				BIT(encoder->compute_output_type(encoder, crtc_state,
+								 connector_state));
+		else
+			crtc_state->output_types |= BIT(encoder->type);
+	}
+
+encoder_retry:
+	/* Ensure the port clock defaults are reset when retrying. */
+	crtc_state->port_clock = 0;
+	crtc_state->pixel_multiplier = 1;
+
+	/* Fill in default crtc timings, allow encoders to overwrite them. */
+	drm_mode_set_crtcinfo(&crtc_state->hw.adjusted_mode,
+			      CRTC_STEREO_DOUBLE);
+
+	/* Pass our mode to the connectors and the CRTC to give them a chance to
+	 * adjust it according to limitations or connector properties, and also
+	 * a chance to reject the mode entirely.
+	 */
+	for_each_new_connector_in_state(&state->base, connector, connector_state, i) {
+		struct intel_encoder *encoder =
+			to_intel_encoder(connector_state->best_encoder);
+
+		if (connector_state->crtc != &crtc->base)
+			continue;
+
+		ret = encoder->compute_config(encoder, crtc_state,
+					      connector_state);
+		if (ret == -EDEADLK)
+			return ret;
+		if (ret < 0) {
+			drm_dbg_kms(&i915->drm, "[ENCODER:%d:%s] config failure: %d\n",
+				    encoder->base.base.id, encoder->base.name, ret);
+			return ret;
+		}
+	}
+
+	/* Set default port clock if not overwritten by the encoder. Needs to be
+	 * done afterwards in case the encoder adjusts the mode. */
+	if (!crtc_state->port_clock)
+		crtc_state->port_clock = crtc_state->hw.adjusted_mode.crtc_clock
+			* crtc_state->pixel_multiplier;
+
+	ret = intel_crtc_compute_config(state, crtc);
+	if (ret == -EDEADLK)
+		return ret;
+	if (ret == -EAGAIN) {
+		if (drm_WARN(&i915->drm, !retry,
+			     "[CRTC:%d:%s] loop in pipe configuration computation\n",
+			     crtc->base.base.id, crtc->base.name))
+			return -EINVAL;
+
+		drm_dbg_kms(&i915->drm, "[CRTC:%d:%s] bw constrained, retrying\n",
+			    crtc->base.base.id, crtc->base.name);
+		retry = false;
+		goto encoder_retry;
+	}
+	if (ret < 0) {
+		drm_dbg_kms(&i915->drm, "[CRTC:%d:%s] config failure: %d\n",
+			    crtc->base.base.id, crtc->base.name, ret);
+		return ret;
+	}
+
+	/* Dithering seems to not pass-through bits correctly when it should, so
+	 * only enable it on 6bpc panels and when its not a compliance
+	 * test requesting 6bpc video pattern.
+	 */
+	crtc_state->dither = (crtc_state->pipe_bpp == 6*3) &&
+		!crtc_state->dither_force_disable;
+	drm_dbg_kms(&i915->drm,
+		    "[CRTC:%d:%s] hw max bpp: %i, pipe bpp: %i, dithering: %i\n",
+		    crtc->base.base.id, crtc->base.name,
+		    base_bpp, crtc_state->pipe_bpp, crtc_state->dither);
+
+	return 0;
+}
+
+static int
+intel_modeset_pipe_config_late(struct intel_atomic_state *state,
+			       struct intel_crtc *crtc)
+{
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	struct drm_connector_state *conn_state;
+	struct drm_connector *connector;
+	int i;
+
+	intel_bigjoiner_adjust_pipe_src(crtc_state);
+
+	for_each_new_connector_in_state(&state->base, connector,
+					conn_state, i) {
+		struct intel_encoder *encoder =
+			to_intel_encoder(conn_state->best_encoder);
+		int ret;
+
+		if (conn_state->crtc != &crtc->base ||
+		    !encoder->compute_config_late)
+			continue;
+
+		ret = encoder->compute_config_late(encoder, crtc_state,
+						   conn_state);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+bool intel_fuzzy_clock_check(int clock1, int clock2)
+{
+	int diff;
+
+	if (clock1 == clock2)
+		return true;
+
+	if (!clock1 || !clock2)
+		return false;
+
+	diff = abs(clock1 - clock2);
+
+	if (((((diff + clock1 + clock2) * 100)) / (clock1 + clock2)) < 105)
+		return true;
+
+	return false;
+}
+
+static bool
+intel_compare_link_m_n(const struct intel_link_m_n *m_n,
+		       const struct intel_link_m_n *m2_n2)
+{
+	return m_n->tu == m2_n2->tu &&
+		m_n->data_m == m2_n2->data_m &&
+		m_n->data_n == m2_n2->data_n &&
+		m_n->link_m == m2_n2->link_m &&
+		m_n->link_n == m2_n2->link_n;
+}
+
+static bool
+intel_compare_infoframe(const union hdmi_infoframe *a,
+			const union hdmi_infoframe *b)
+{
+	return memcmp(a, b, sizeof(*a)) == 0;
+}
+
+static bool
+intel_compare_dp_vsc_sdp(const struct drm_dp_vsc_sdp *a,
+			 const struct drm_dp_vsc_sdp *b)
+{
+	return memcmp(a, b, sizeof(*a)) == 0;
+}
+
+static void
+pipe_config_infoframe_mismatch(struct drm_i915_private *dev_priv,
+			       bool fastset, const char *name,
+			       const union hdmi_infoframe *a,
+			       const union hdmi_infoframe *b)
+{
+	if (fastset) {
+		if (!drm_debug_enabled(DRM_UT_KMS))
+			return;
+
+		drm_dbg_kms(&dev_priv->drm,
+			    "fastset mismatch in %s infoframe\n", name);
+		drm_dbg_kms(&dev_priv->drm, "expected:\n");
+		hdmi_infoframe_log(KERN_DEBUG, dev_priv->drm.dev, a);
+		drm_dbg_kms(&dev_priv->drm, "found:\n");
+		hdmi_infoframe_log(KERN_DEBUG, dev_priv->drm.dev, b);
+	} else {
+		drm_err(&dev_priv->drm, "mismatch in %s infoframe\n", name);
+		drm_err(&dev_priv->drm, "expected:\n");
+		hdmi_infoframe_log(KERN_ERR, dev_priv->drm.dev, a);
+		drm_err(&dev_priv->drm, "found:\n");
+		hdmi_infoframe_log(KERN_ERR, dev_priv->drm.dev, b);
+	}
+}
+
+static void
+pipe_config_dp_vsc_sdp_mismatch(struct drm_i915_private *dev_priv,
+				bool fastset, const char *name,
+				const struct drm_dp_vsc_sdp *a,
+				const struct drm_dp_vsc_sdp *b)
+{
+	if (fastset) {
+		if (!drm_debug_enabled(DRM_UT_KMS))
+			return;
+
+		drm_dbg_kms(&dev_priv->drm,
+			    "fastset mismatch in %s dp sdp\n", name);
+		drm_dbg_kms(&dev_priv->drm, "expected:\n");
+		drm_dp_vsc_sdp_log(KERN_DEBUG, dev_priv->drm.dev, a);
+		drm_dbg_kms(&dev_priv->drm, "found:\n");
+		drm_dp_vsc_sdp_log(KERN_DEBUG, dev_priv->drm.dev, b);
+	} else {
+		drm_err(&dev_priv->drm, "mismatch in %s dp sdp\n", name);
+		drm_err(&dev_priv->drm, "expected:\n");
+		drm_dp_vsc_sdp_log(KERN_ERR, dev_priv->drm.dev, a);
+		drm_err(&dev_priv->drm, "found:\n");
+		drm_dp_vsc_sdp_log(KERN_ERR, dev_priv->drm.dev, b);
+	}
+}
+
+static void __printf(4, 5)
+pipe_config_mismatch(bool fastset, const struct intel_crtc *crtc,
+		     const char *name, const char *format, ...)
+{
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	struct va_format vaf;
+	va_list args;
+
+	va_start(args, format);
+	vaf.fmt = format;
+	vaf.va = &args;
+
+	if (fastset)
+		drm_dbg_kms(&i915->drm,
+			    "[CRTC:%d:%s] fastset mismatch in %s %pV\n",
+			    crtc->base.base.id, crtc->base.name, name, &vaf);
+	else
+		drm_err(&i915->drm, "[CRTC:%d:%s] mismatch in %s %pV\n",
+			crtc->base.base.id, crtc->base.name, name, &vaf);
+
+	va_end(args);
+}
+
+static bool fastboot_enabled(struct drm_i915_private *dev_priv)
+{
+	if (dev_priv->params.fastboot != -1)
+		return dev_priv->params.fastboot;
+
+	/* Enable fastboot by default on Skylake and newer */
+	if (DISPLAY_VER(dev_priv) >= 9)
+		return true;
+
+	/* Enable fastboot by default on VLV and CHV */
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
+		return true;
+
+	/* Disabled by default on all others */
+	return false;
+}
+
+bool
+intel_pipe_config_compare(const struct intel_crtc_state *current_config,
+			  const struct intel_crtc_state *pipe_config,
+			  bool fastset)
+{
+	struct drm_i915_private *dev_priv = to_i915(current_config->uapi.crtc->dev);
+	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+	bool ret = true;
+	u32 bp_gamma = 0;
+	bool fixup_inherited = fastset &&
+		current_config->inherited && !pipe_config->inherited;
+
+	if (fixup_inherited && !fastboot_enabled(dev_priv)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "initial modeset and fastboot not set\n");
+		ret = false;
+	}
+
+#define PIPE_CONF_CHECK_X(name) do { \
+	if (current_config->name != pipe_config->name) { \
+		pipe_config_mismatch(fastset, crtc, __stringify(name), \
+				     "(expected 0x%08x, found 0x%08x)", \
+				     current_config->name, \
+				     pipe_config->name); \
+		ret = false; \
+	} \
+} while (0)
+
+#define PIPE_CONF_CHECK_X_WITH_MASK(name, mask) do { \
+	if ((current_config->name & (mask)) != (pipe_config->name & (mask))) { \
+		pipe_config_mismatch(fastset, crtc, __stringify(name), \
+				     "(expected 0x%08x, found 0x%08x)", \
+				     current_config->name & (mask), \
+				     pipe_config->name & (mask)); \
+		ret = false; \
+	} \
+} while (0)
+
+#define PIPE_CONF_CHECK_I(name) do { \
+	if (current_config->name != pipe_config->name) { \
+		pipe_config_mismatch(fastset, crtc, __stringify(name), \
+				     "(expected %i, found %i)", \
+				     current_config->name, \
+				     pipe_config->name); \
+		ret = false; \
+	} \
+} while (0)
+
+#define PIPE_CONF_CHECK_BOOL(name) do { \
+	if (current_config->name != pipe_config->name) { \
+		pipe_config_mismatch(fastset, crtc,  __stringify(name), \
+				     "(expected %s, found %s)", \
+				     str_yes_no(current_config->name), \
+				     str_yes_no(pipe_config->name)); \
+		ret = false; \
+	} \
+} while (0)
+
+/*
+ * Checks state where we only read out the enabling, but not the entire
+ * state itself (like full infoframes or ELD for audio). These states
+ * require a full modeset on bootup to fix up.
+ */
+#define PIPE_CONF_CHECK_BOOL_INCOMPLETE(name) do { \
+	if (!fixup_inherited || (!current_config->name && !pipe_config->name)) { \
+		PIPE_CONF_CHECK_BOOL(name); \
+	} else { \
+		pipe_config_mismatch(fastset, crtc, __stringify(name), \
+				     "unable to verify whether state matches exactly, forcing modeset (expected %s, found %s)", \
+				     str_yes_no(current_config->name), \
+				     str_yes_no(pipe_config->name)); \
+		ret = false; \
+	} \
+} while (0)
+
+#define PIPE_CONF_CHECK_P(name) do { \
+	if (current_config->name != pipe_config->name) { \
+		pipe_config_mismatch(fastset, crtc, __stringify(name), \
+				     "(expected %p, found %p)", \
+				     current_config->name, \
+				     pipe_config->name); \
+		ret = false; \
+	} \
+} while (0)
+
+#define PIPE_CONF_CHECK_M_N(name) do { \
+	if (!intel_compare_link_m_n(&current_config->name, \
+				    &pipe_config->name)) { \
+		pipe_config_mismatch(fastset, crtc, __stringify(name), \
+				     "(expected tu %i data %i/%i link %i/%i, " \
+				     "found tu %i, data %i/%i link %i/%i)", \
+				     current_config->name.tu, \
+				     current_config->name.data_m, \
+				     current_config->name.data_n, \
+				     current_config->name.link_m, \
+				     current_config->name.link_n, \
+				     pipe_config->name.tu, \
+				     pipe_config->name.data_m, \
+				     pipe_config->name.data_n, \
+				     pipe_config->name.link_m, \
+				     pipe_config->name.link_n); \
+		ret = false; \
+	} \
+} while (0)
+
+#define PIPE_CONF_CHECK_TIMINGS(name) do { \
+	PIPE_CONF_CHECK_I(name.crtc_hdisplay); \
+	PIPE_CONF_CHECK_I(name.crtc_htotal); \
+	PIPE_CONF_CHECK_I(name.crtc_hblank_start); \
+	PIPE_CONF_CHECK_I(name.crtc_hblank_end); \
+	PIPE_CONF_CHECK_I(name.crtc_hsync_start); \
+	PIPE_CONF_CHECK_I(name.crtc_hsync_end); \
+	PIPE_CONF_CHECK_I(name.crtc_vdisplay); \
+	PIPE_CONF_CHECK_I(name.crtc_vtotal); \
+	PIPE_CONF_CHECK_I(name.crtc_vblank_start); \
+	PIPE_CONF_CHECK_I(name.crtc_vblank_end); \
+	PIPE_CONF_CHECK_I(name.crtc_vsync_start); \
+	PIPE_CONF_CHECK_I(name.crtc_vsync_end); \
+} while (0)
+
+#define PIPE_CONF_CHECK_RECT(name) do { \
+	PIPE_CONF_CHECK_I(name.x1); \
+	PIPE_CONF_CHECK_I(name.x2); \
+	PIPE_CONF_CHECK_I(name.y1); \
+	PIPE_CONF_CHECK_I(name.y2); \
+} while (0)
+
+/* This is required for BDW+ where there is only one set of registers for
+ * switching between high and low RR.
+ * This macro can be used whenever a comparison has to be made between one
+ * hw state and multiple sw state variables.
+ */
+#define PIPE_CONF_CHECK_M_N_ALT(name, alt_name) do { \
+	if (!intel_compare_link_m_n(&current_config->name, \
+				    &pipe_config->name) && \
+	    !intel_compare_link_m_n(&current_config->alt_name, \
+				    &pipe_config->name)) { \
+		pipe_config_mismatch(fastset, crtc, __stringify(name), \
+				     "(expected tu %i data %i/%i link %i/%i, " \
+				     "or tu %i data %i/%i link %i/%i, " \
+				     "found tu %i, data %i/%i link %i/%i)", \
+				     current_config->name.tu, \
+				     current_config->name.data_m, \
+				     current_config->name.data_n, \
+				     current_config->name.link_m, \
+				     current_config->name.link_n, \
+				     current_config->alt_name.tu, \
+				     current_config->alt_name.data_m, \
+				     current_config->alt_name.data_n, \
+				     current_config->alt_name.link_m, \
+				     current_config->alt_name.link_n, \
+				     pipe_config->name.tu, \
+				     pipe_config->name.data_m, \
+				     pipe_config->name.data_n, \
+				     pipe_config->name.link_m, \
+				     pipe_config->name.link_n); \
+		ret = false; \
+	} \
+} while (0)
+
+#define PIPE_CONF_CHECK_FLAGS(name, mask) do { \
+	if ((current_config->name ^ pipe_config->name) & (mask)) { \
+		pipe_config_mismatch(fastset, crtc, __stringify(name), \
+				     "(%x) (expected %i, found %i)", \
+				     (mask), \
+				     current_config->name & (mask), \
+				     pipe_config->name & (mask)); \
+		ret = false; \
+	} \
+} while (0)
+
+#define PIPE_CONF_CHECK_INFOFRAME(name) do { \
+	if (!intel_compare_infoframe(&current_config->infoframes.name, \
+				     &pipe_config->infoframes.name)) { \
+		pipe_config_infoframe_mismatch(dev_priv, fastset, __stringify(name), \
+					       &current_config->infoframes.name, \
+					       &pipe_config->infoframes.name); \
+		ret = false; \
+	} \
+} while (0)
+
+#define PIPE_CONF_CHECK_DP_VSC_SDP(name) do { \
+	if (!current_config->has_psr && !pipe_config->has_psr && \
+	    !intel_compare_dp_vsc_sdp(&current_config->infoframes.name, \
+				      &pipe_config->infoframes.name)) { \
+		pipe_config_dp_vsc_sdp_mismatch(dev_priv, fastset, __stringify(name), \
+						&current_config->infoframes.name, \
+						&pipe_config->infoframes.name); \
+		ret = false; \
+	} \
+} while (0)
+
+#define PIPE_CONF_CHECK_COLOR_LUT(name1, name2, bit_precision) do { \
+	if (current_config->name1 != pipe_config->name1) { \
+		pipe_config_mismatch(fastset, crtc, __stringify(name1), \
+				"(expected %i, found %i, won't compare lut values)", \
+				current_config->name1, \
+				pipe_config->name1); \
+		ret = false;\
+	} else { \
+		if (!intel_color_lut_equal(current_config->name2, \
+					pipe_config->name2, pipe_config->name1, \
+					bit_precision)) { \
+			pipe_config_mismatch(fastset, crtc, __stringify(name2), \
+					"hw_state doesn't match sw_state"); \
+			ret = false; \
+		} \
+	} \
+} while (0)
+
+#define PIPE_CONF_QUIRK(quirk) \
+	((current_config->quirks | pipe_config->quirks) & (quirk))
+
+	PIPE_CONF_CHECK_I(hw.enable);
+	PIPE_CONF_CHECK_I(hw.active);
+
+	PIPE_CONF_CHECK_I(cpu_transcoder);
+	PIPE_CONF_CHECK_I(mst_master_transcoder);
+
+	PIPE_CONF_CHECK_BOOL(has_pch_encoder);
+	PIPE_CONF_CHECK_I(fdi_lanes);
+	PIPE_CONF_CHECK_M_N(fdi_m_n);
+
+	PIPE_CONF_CHECK_I(lane_count);
+	PIPE_CONF_CHECK_X(lane_lat_optim_mask);
+
+	if (HAS_DOUBLE_BUFFERED_M_N(dev_priv)) {
+		if (!fastset || !pipe_config->seamless_m_n)
+			PIPE_CONF_CHECK_M_N_ALT(dp_m_n, dp_m2_n2);
+	} else {
+		PIPE_CONF_CHECK_M_N(dp_m_n);
+		PIPE_CONF_CHECK_M_N(dp_m2_n2);
+	}
+
+	PIPE_CONF_CHECK_X(output_types);
+
+	PIPE_CONF_CHECK_I(framestart_delay);
+	PIPE_CONF_CHECK_I(msa_timing_delay);
+
+	PIPE_CONF_CHECK_TIMINGS(hw.pipe_mode);
+	PIPE_CONF_CHECK_TIMINGS(hw.adjusted_mode);
+
+	PIPE_CONF_CHECK_I(pixel_multiplier);
+
+	PIPE_CONF_CHECK_FLAGS(hw.adjusted_mode.flags,
+			      DRM_MODE_FLAG_INTERLACE);
+
+	if (!PIPE_CONF_QUIRK(PIPE_CONFIG_QUIRK_MODE_SYNC_FLAGS)) {
+		PIPE_CONF_CHECK_FLAGS(hw.adjusted_mode.flags,
+				      DRM_MODE_FLAG_PHSYNC);
+		PIPE_CONF_CHECK_FLAGS(hw.adjusted_mode.flags,
+				      DRM_MODE_FLAG_NHSYNC);
+		PIPE_CONF_CHECK_FLAGS(hw.adjusted_mode.flags,
+				      DRM_MODE_FLAG_PVSYNC);
+		PIPE_CONF_CHECK_FLAGS(hw.adjusted_mode.flags,
+				      DRM_MODE_FLAG_NVSYNC);
+	}
+
+	PIPE_CONF_CHECK_I(output_format);
+	PIPE_CONF_CHECK_BOOL(has_hdmi_sink);
+	if ((DISPLAY_VER(dev_priv) < 8 && !IS_HASWELL(dev_priv)) ||
+	    IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
+		PIPE_CONF_CHECK_BOOL(limited_color_range);
+
+	PIPE_CONF_CHECK_BOOL(hdmi_scrambling);
+	PIPE_CONF_CHECK_BOOL(hdmi_high_tmds_clock_ratio);
+	PIPE_CONF_CHECK_BOOL(has_infoframe);
+	PIPE_CONF_CHECK_BOOL(fec_enable);
+
+	PIPE_CONF_CHECK_BOOL_INCOMPLETE(has_audio);
+
+	PIPE_CONF_CHECK_X(gmch_pfit.control);
+	/* pfit ratios are autocomputed by the hw on gen4+ */
+	if (DISPLAY_VER(dev_priv) < 4)
+		PIPE_CONF_CHECK_X(gmch_pfit.pgm_ratios);
+	PIPE_CONF_CHECK_X(gmch_pfit.lvds_border_bits);
+
+	/*
+	 * Changing the EDP transcoder input mux
+	 * (A_ONOFF vs. A_ON) requires a full modeset.
+	 */
+	PIPE_CONF_CHECK_BOOL(pch_pfit.force_thru);
+
+	if (!fastset) {
+		PIPE_CONF_CHECK_RECT(pipe_src);
+
+		PIPE_CONF_CHECK_BOOL(pch_pfit.enabled);
+		PIPE_CONF_CHECK_RECT(pch_pfit.dst);
+
+		PIPE_CONF_CHECK_I(scaler_state.scaler_id);
+		PIPE_CONF_CHECK_I(pixel_rate);
+
+		PIPE_CONF_CHECK_X(gamma_mode);
+		if (IS_CHERRYVIEW(dev_priv))
+			PIPE_CONF_CHECK_X(cgm_mode);
+		else
+			PIPE_CONF_CHECK_X(csc_mode);
+		PIPE_CONF_CHECK_BOOL(gamma_enable);
+		PIPE_CONF_CHECK_BOOL(csc_enable);
+
+		PIPE_CONF_CHECK_I(linetime);
+		PIPE_CONF_CHECK_I(ips_linetime);
+
+		bp_gamma = intel_color_get_gamma_bit_precision(pipe_config);
+		if (bp_gamma)
+			PIPE_CONF_CHECK_COLOR_LUT(gamma_mode, hw.gamma_lut, bp_gamma);
+
+		if (current_config->active_planes) {
+			PIPE_CONF_CHECK_BOOL(has_psr);
+			PIPE_CONF_CHECK_BOOL(has_psr2);
+			PIPE_CONF_CHECK_BOOL(enable_psr2_sel_fetch);
+			PIPE_CONF_CHECK_I(dc3co_exitline);
+		}
+	}
+
+	PIPE_CONF_CHECK_BOOL(double_wide);
+
+	if (dev_priv->display.dpll.mgr) {
+		PIPE_CONF_CHECK_P(shared_dpll);
+
+		PIPE_CONF_CHECK_X(dpll_hw_state.dpll);
+		PIPE_CONF_CHECK_X(dpll_hw_state.dpll_md);
+		PIPE_CONF_CHECK_X(dpll_hw_state.fp0);
+		PIPE_CONF_CHECK_X(dpll_hw_state.fp1);
+		PIPE_CONF_CHECK_X(dpll_hw_state.wrpll);
+		PIPE_CONF_CHECK_X(dpll_hw_state.spll);
+		PIPE_CONF_CHECK_X(dpll_hw_state.ctrl1);
+		PIPE_CONF_CHECK_X(dpll_hw_state.cfgcr1);
+		PIPE_CONF_CHECK_X(dpll_hw_state.cfgcr2);
+		PIPE_CONF_CHECK_X(dpll_hw_state.cfgcr0);
+		PIPE_CONF_CHECK_X(dpll_hw_state.div0);
+		PIPE_CONF_CHECK_X(dpll_hw_state.ebb0);
+		PIPE_CONF_CHECK_X(dpll_hw_state.ebb4);
+		PIPE_CONF_CHECK_X(dpll_hw_state.pll0);
+		PIPE_CONF_CHECK_X(dpll_hw_state.pll1);
+		PIPE_CONF_CHECK_X(dpll_hw_state.pll2);
+		PIPE_CONF_CHECK_X(dpll_hw_state.pll3);
+		PIPE_CONF_CHECK_X(dpll_hw_state.pll6);
+		PIPE_CONF_CHECK_X(dpll_hw_state.pll8);
+		PIPE_CONF_CHECK_X(dpll_hw_state.pll9);
+		PIPE_CONF_CHECK_X(dpll_hw_state.pll10);
+		PIPE_CONF_CHECK_X(dpll_hw_state.pcsdw12);
+		PIPE_CONF_CHECK_X(dpll_hw_state.mg_refclkin_ctl);
+		PIPE_CONF_CHECK_X(dpll_hw_state.mg_clktop2_coreclkctl1);
+		PIPE_CONF_CHECK_X(dpll_hw_state.mg_clktop2_hsclkctl);
+		PIPE_CONF_CHECK_X(dpll_hw_state.mg_pll_div0);
+		PIPE_CONF_CHECK_X(dpll_hw_state.mg_pll_div1);
+		PIPE_CONF_CHECK_X(dpll_hw_state.mg_pll_lf);
+		PIPE_CONF_CHECK_X(dpll_hw_state.mg_pll_frac_lock);
+		PIPE_CONF_CHECK_X(dpll_hw_state.mg_pll_ssc);
+		PIPE_CONF_CHECK_X(dpll_hw_state.mg_pll_bias);
+		PIPE_CONF_CHECK_X(dpll_hw_state.mg_pll_tdc_coldst_bias);
+	}
+
+	PIPE_CONF_CHECK_X(dsi_pll.ctrl);
+	PIPE_CONF_CHECK_X(dsi_pll.div);
+
+	if (IS_G4X(dev_priv) || DISPLAY_VER(dev_priv) >= 5)
+		PIPE_CONF_CHECK_I(pipe_bpp);
+
+	if (!fastset || !pipe_config->seamless_m_n) {
+		PIPE_CONF_CHECK_I(hw.pipe_mode.crtc_clock);
+		PIPE_CONF_CHECK_I(hw.adjusted_mode.crtc_clock);
+	}
+	PIPE_CONF_CHECK_I(port_clock);
+
+	PIPE_CONF_CHECK_I(min_voltage_level);
+
+	if (current_config->has_psr || pipe_config->has_psr)
+		PIPE_CONF_CHECK_X_WITH_MASK(infoframes.enable,
+					    ~intel_hdmi_infoframe_enable(DP_SDP_VSC));
+	else
+		PIPE_CONF_CHECK_X(infoframes.enable);
+
+	PIPE_CONF_CHECK_X(infoframes.gcp);
+	PIPE_CONF_CHECK_INFOFRAME(avi);
+	PIPE_CONF_CHECK_INFOFRAME(spd);
+	PIPE_CONF_CHECK_INFOFRAME(hdmi);
+	PIPE_CONF_CHECK_INFOFRAME(drm);
+	PIPE_CONF_CHECK_DP_VSC_SDP(vsc);
+
+	PIPE_CONF_CHECK_X(sync_mode_slaves_mask);
+	PIPE_CONF_CHECK_I(master_transcoder);
+	PIPE_CONF_CHECK_X(bigjoiner_pipes);
+
+	PIPE_CONF_CHECK_I(dsc.compression_enable);
+	PIPE_CONF_CHECK_I(dsc.dsc_split);
+	PIPE_CONF_CHECK_I(dsc.compressed_bpp);
+
+	PIPE_CONF_CHECK_BOOL(splitter.enable);
+	PIPE_CONF_CHECK_I(splitter.link_count);
+	PIPE_CONF_CHECK_I(splitter.pixel_overlap);
+
+	PIPE_CONF_CHECK_BOOL(vrr.enable);
+	PIPE_CONF_CHECK_I(vrr.vmin);
+	PIPE_CONF_CHECK_I(vrr.vmax);
+	PIPE_CONF_CHECK_I(vrr.flipline);
+	PIPE_CONF_CHECK_I(vrr.pipeline_full);
+	PIPE_CONF_CHECK_I(vrr.guardband);
+
+#undef PIPE_CONF_CHECK_X
+#undef PIPE_CONF_CHECK_I
+#undef PIPE_CONF_CHECK_BOOL
+#undef PIPE_CONF_CHECK_BOOL_INCOMPLETE
+#undef PIPE_CONF_CHECK_P
+#undef PIPE_CONF_CHECK_FLAGS
+#undef PIPE_CONF_CHECK_COLOR_LUT
+#undef PIPE_CONF_CHECK_TIMINGS
+#undef PIPE_CONF_CHECK_RECT
+#undef PIPE_CONF_QUIRK
+
+	return ret;
+}
+
+static void
+intel_verify_planes(struct intel_atomic_state *state)
+{
+	struct intel_plane *plane;
+	const struct intel_plane_state *plane_state;
+	int i;
+
+	for_each_new_intel_plane_in_state(state, plane,
+					  plane_state, i)
+		assert_plane(plane, plane_state->planar_slave ||
+			     plane_state->uapi.visible);
+}
+
+int intel_modeset_all_pipes(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct intel_crtc *crtc;
+
+	/*
+	 * Add all pipes to the state, and force
+	 * a modeset on all the active ones.
+	 */
+	for_each_intel_crtc(&dev_priv->drm, crtc) {
+		struct intel_crtc_state *crtc_state;
+		int ret;
+
+		crtc_state = intel_atomic_get_crtc_state(&state->base, crtc);
+		if (IS_ERR(crtc_state))
+			return PTR_ERR(crtc_state);
+
+		if (!crtc_state->hw.active ||
+		    drm_atomic_crtc_needs_modeset(&crtc_state->uapi))
+			continue;
+
+		crtc_state->uapi.mode_changed = true;
+
+		ret = drm_atomic_add_affected_connectors(&state->base,
+							 &crtc->base);
+		if (ret)
+			return ret;
+
+		ret = intel_dp_mst_add_topology_state_for_crtc(state, crtc);
+		if (ret)
+			return ret;
+
+		ret = intel_atomic_add_affected_planes(state, crtc);
+		if (ret)
+			return ret;
+
+		crtc_state->update_planes |= crtc_state->active_planes;
+	}
+
+	return 0;
+}
+
+void intel_crtc_update_active_timings(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	struct drm_display_mode adjusted_mode;
+
+	drm_mode_init(&adjusted_mode, &crtc_state->hw.adjusted_mode);
+
+	if (crtc_state->vrr.enable) {
+		adjusted_mode.crtc_vtotal = crtc_state->vrr.vmax;
+		adjusted_mode.crtc_vblank_end = crtc_state->vrr.vmax;
+		adjusted_mode.crtc_vblank_start = intel_vrr_vmin_vblank_start(crtc_state);
+		crtc->vmax_vblank_start = intel_vrr_vmax_vblank_start(crtc_state);
+	}
+
+	drm_calc_timestamping_constants(&crtc->base, &adjusted_mode);
+
+	crtc->mode_flags = crtc_state->mode_flags;
+
+	/*
+	 * The scanline counter increments at the leading edge of hsync.
+	 *
+	 * On most platforms it starts counting from vtotal-1 on the
+	 * first active line. That means the scanline counter value is
+	 * always one less than what we would expect. Ie. just after
+	 * start of vblank, which also occurs at start of hsync (on the
+	 * last active line), the scanline counter will read vblank_start-1.
+	 *
+	 * On gen2 the scanline counter starts counting from 1 instead
+	 * of vtotal-1, so we have to subtract one (or rather add vtotal-1
+	 * to keep the value positive), instead of adding one.
+	 *
+	 * On HSW+ the behaviour of the scanline counter depends on the output
+	 * type. For DP ports it behaves like most other platforms, but on HDMI
+	 * there's an extra 1 line difference. So we need to add two instead of
+	 * one to the value.
+	 *
+	 * On VLV/CHV DSI the scanline counter would appear to increment
+	 * approx. 1/3 of a scanline before start of vblank. Unfortunately
+	 * that means we can't tell whether we're in vblank or not while
+	 * we're on that particular line. We must still set scanline_offset
+	 * to 1 so that the vblank timestamps come out correct when we query
+	 * the scanline counter from within the vblank interrupt handler.
+	 * However if queried just before the start of vblank we'll get an
+	 * answer that's slightly in the future.
+	 */
+	if (DISPLAY_VER(dev_priv) == 2) {
+		int vtotal;
+
+		vtotal = adjusted_mode.crtc_vtotal;
+		if (adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE)
+			vtotal /= 2;
+
+		crtc->scanline_offset = vtotal - 1;
+	} else if (HAS_DDI(dev_priv) &&
+		   intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) {
+		crtc->scanline_offset = 2;
+	} else {
+		crtc->scanline_offset = 1;
+	}
+}
+
+/*
+ * This implements the workaround described in the "notes" section of the mode
+ * set sequence documentation. When going from no pipes or single pipe to
+ * multiple pipes, and planes are enabled after the pipe, we need to wait at
+ * least 2 vblanks on the first pipe before enabling planes on the second pipe.
+ */
+static int hsw_mode_set_planes_workaround(struct intel_atomic_state *state)
+{
+	struct intel_crtc_state *crtc_state;
+	struct intel_crtc *crtc;
+	struct intel_crtc_state *first_crtc_state = NULL;
+	struct intel_crtc_state *other_crtc_state = NULL;
+	enum pipe first_pipe = INVALID_PIPE, enabled_pipe = INVALID_PIPE;
+	int i;
+
+	/* look at all crtc's that are going to be enabled in during modeset */
+	for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) {
+		if (!crtc_state->hw.active ||
+		    !intel_crtc_needs_modeset(crtc_state))
+			continue;
+
+		if (first_crtc_state) {
+			other_crtc_state = crtc_state;
+			break;
+		} else {
+			first_crtc_state = crtc_state;
+			first_pipe = crtc->pipe;
+		}
+	}
+
+	/* No workaround needed? */
+	if (!first_crtc_state)
+		return 0;
+
+	/* w/a possibly needed, check how many crtc's are already enabled. */
+	for_each_intel_crtc(state->base.dev, crtc) {
+		crtc_state = intel_atomic_get_crtc_state(&state->base, crtc);
+		if (IS_ERR(crtc_state))
+			return PTR_ERR(crtc_state);
+
+		crtc_state->hsw_workaround_pipe = INVALID_PIPE;
+
+		if (!crtc_state->hw.active ||
+		    intel_crtc_needs_modeset(crtc_state))
+			continue;
+
+		/* 2 or more enabled crtcs means no need for w/a */
+		if (enabled_pipe != INVALID_PIPE)
+			return 0;
+
+		enabled_pipe = crtc->pipe;
+	}
+
+	if (enabled_pipe != INVALID_PIPE)
+		first_crtc_state->hsw_workaround_pipe = enabled_pipe;
+	else if (other_crtc_state)
+		other_crtc_state->hsw_workaround_pipe = first_pipe;
+
+	return 0;
+}
+
+u8 intel_calc_active_pipes(struct intel_atomic_state *state,
+			   u8 active_pipes)
+{
+	const struct intel_crtc_state *crtc_state;
+	struct intel_crtc *crtc;
+	int i;
+
+	for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) {
+		if (crtc_state->hw.active)
+			active_pipes |= BIT(crtc->pipe);
+		else
+			active_pipes &= ~BIT(crtc->pipe);
+	}
+
+	return active_pipes;
+}
+
+static int intel_modeset_checks(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+
+	state->modeset = true;
+
+	if (IS_HASWELL(dev_priv))
+		return hsw_mode_set_planes_workaround(state);
+
+	return 0;
+}
+
+static void intel_crtc_check_fastset(const struct intel_crtc_state *old_crtc_state,
+				     struct intel_crtc_state *new_crtc_state)
+{
+	if (!intel_pipe_config_compare(old_crtc_state, new_crtc_state, true))
+		return;
+
+	new_crtc_state->uapi.mode_changed = false;
+	new_crtc_state->update_pipe = true;
+}
+
+static int intel_crtc_add_planes_to_state(struct intel_atomic_state *state,
+					  struct intel_crtc *crtc,
+					  u8 plane_ids_mask)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct intel_plane *plane;
+
+	for_each_intel_plane_on_crtc(&dev_priv->drm, crtc, plane) {
+		struct intel_plane_state *plane_state;
+
+		if ((plane_ids_mask & BIT(plane->id)) == 0)
+			continue;
+
+		plane_state = intel_atomic_get_plane_state(state, plane);
+		if (IS_ERR(plane_state))
+			return PTR_ERR(plane_state);
+	}
+
+	return 0;
+}
+
+int intel_atomic_add_affected_planes(struct intel_atomic_state *state,
+				     struct intel_crtc *crtc)
+{
+	const struct intel_crtc_state *old_crtc_state =
+		intel_atomic_get_old_crtc_state(state, crtc);
+	const struct intel_crtc_state *new_crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+
+	return intel_crtc_add_planes_to_state(state, crtc,
+					      old_crtc_state->enabled_planes |
+					      new_crtc_state->enabled_planes);
+}
+
+static bool active_planes_affects_min_cdclk(struct drm_i915_private *dev_priv)
+{
+	/* See {hsw,vlv,ivb}_plane_ratio() */
+	return IS_BROADWELL(dev_priv) || IS_HASWELL(dev_priv) ||
+		IS_CHERRYVIEW(dev_priv) || IS_VALLEYVIEW(dev_priv) ||
+		IS_IVYBRIDGE(dev_priv);
+}
+
+static int intel_crtc_add_bigjoiner_planes(struct intel_atomic_state *state,
+					   struct intel_crtc *crtc,
+					   struct intel_crtc *other)
+{
+	const struct intel_plane_state *plane_state;
+	struct intel_plane *plane;
+	u8 plane_ids = 0;
+	int i;
+
+	for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
+		if (plane->pipe == crtc->pipe)
+			plane_ids |= BIT(plane->id);
+	}
+
+	return intel_crtc_add_planes_to_state(state, other, plane_ids);
+}
+
+static int intel_bigjoiner_add_affected_planes(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_crtc_state *crtc_state;
+	struct intel_crtc *crtc;
+	int i;
+
+	for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) {
+		struct intel_crtc *other;
+
+		for_each_intel_crtc_in_pipe_mask(&i915->drm, other,
+						 crtc_state->bigjoiner_pipes) {
+			int ret;
+
+			if (crtc == other)
+				continue;
+
+			ret = intel_crtc_add_bigjoiner_planes(state, crtc, other);
+			if (ret)
+				return ret;
+		}
+	}
+
+	return 0;
+}
+
+static int intel_atomic_check_planes(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct intel_crtc_state *old_crtc_state, *new_crtc_state;
+	struct intel_plane_state *plane_state;
+	struct intel_plane *plane;
+	struct intel_crtc *crtc;
+	int i, ret;
+
+	ret = icl_add_linked_planes(state);
+	if (ret)
+		return ret;
+
+	ret = intel_bigjoiner_add_affected_planes(state);
+	if (ret)
+		return ret;
+
+	for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
+		ret = intel_plane_atomic_check(state, plane);
+		if (ret) {
+			drm_dbg_atomic(&dev_priv->drm,
+				       "[PLANE:%d:%s] atomic driver check failed\n",
+				       plane->base.base.id, plane->base.name);
+			return ret;
+		}
+	}
+
+	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
+					    new_crtc_state, i) {
+		u8 old_active_planes, new_active_planes;
+
+		ret = icl_check_nv12_planes(new_crtc_state);
+		if (ret)
+			return ret;
+
+		/*
+		 * On some platforms the number of active planes affects
+		 * the planes' minimum cdclk calculation. Add such planes
+		 * to the state before we compute the minimum cdclk.
+		 */
+		if (!active_planes_affects_min_cdclk(dev_priv))
+			continue;
+
+		old_active_planes = old_crtc_state->active_planes & ~BIT(PLANE_CURSOR);
+		new_active_planes = new_crtc_state->active_planes & ~BIT(PLANE_CURSOR);
+
+		if (hweight8(old_active_planes) == hweight8(new_active_planes))
+			continue;
+
+		ret = intel_crtc_add_planes_to_state(state, crtc, new_active_planes);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int intel_atomic_check_crtcs(struct intel_atomic_state *state)
+{
+	struct intel_crtc_state *crtc_state;
+	struct intel_crtc *crtc;
+	int i;
+
+	for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) {
+		struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+		int ret;
+
+		ret = intel_crtc_atomic_check(state, crtc);
+		if (ret) {
+			drm_dbg_atomic(&i915->drm,
+				       "[CRTC:%d:%s] atomic driver check failed\n",
+				       crtc->base.base.id, crtc->base.name);
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+static bool intel_cpu_transcoders_need_modeset(struct intel_atomic_state *state,
+					       u8 transcoders)
+{
+	const struct intel_crtc_state *new_crtc_state;
+	struct intel_crtc *crtc;
+	int i;
+
+	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
+		if (new_crtc_state->hw.enable &&
+		    transcoders & BIT(new_crtc_state->cpu_transcoder) &&
+		    intel_crtc_needs_modeset(new_crtc_state))
+			return true;
+	}
+
+	return false;
+}
+
+static bool intel_pipes_need_modeset(struct intel_atomic_state *state,
+				     u8 pipes)
+{
+	const struct intel_crtc_state *new_crtc_state;
+	struct intel_crtc *crtc;
+	int i;
+
+	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
+		if (new_crtc_state->hw.enable &&
+		    pipes & BIT(crtc->pipe) &&
+		    intel_crtc_needs_modeset(new_crtc_state))
+			return true;
+	}
+
+	return false;
+}
+
+static int intel_atomic_check_bigjoiner(struct intel_atomic_state *state,
+					struct intel_crtc *master_crtc)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	struct intel_crtc_state *master_crtc_state =
+		intel_atomic_get_new_crtc_state(state, master_crtc);
+	struct intel_crtc *slave_crtc;
+
+	if (!master_crtc_state->bigjoiner_pipes)
+		return 0;
+
+	/* sanity check */
+	if (drm_WARN_ON(&i915->drm,
+			master_crtc->pipe != bigjoiner_master_pipe(master_crtc_state)))
+		return -EINVAL;
+
+	if (master_crtc_state->bigjoiner_pipes & ~bigjoiner_pipes(i915)) {
+		drm_dbg_kms(&i915->drm,
+			    "[CRTC:%d:%s] Cannot act as big joiner master "
+			    "(need 0x%x as pipes, only 0x%x possible)\n",
+			    master_crtc->base.base.id, master_crtc->base.name,
+			    master_crtc_state->bigjoiner_pipes, bigjoiner_pipes(i915));
+		return -EINVAL;
+	}
+
+	for_each_intel_crtc_in_pipe_mask(&i915->drm, slave_crtc,
+					 intel_crtc_bigjoiner_slave_pipes(master_crtc_state)) {
+		struct intel_crtc_state *slave_crtc_state;
+		int ret;
+
+		slave_crtc_state = intel_atomic_get_crtc_state(&state->base, slave_crtc);
+		if (IS_ERR(slave_crtc_state))
+			return PTR_ERR(slave_crtc_state);
+
+		/* master being enabled, slave was already configured? */
+		if (slave_crtc_state->uapi.enable) {
+			drm_dbg_kms(&i915->drm,
+				    "[CRTC:%d:%s] Slave is enabled as normal CRTC, but "
+				    "[CRTC:%d:%s] claiming this CRTC for bigjoiner.\n",
+				    slave_crtc->base.base.id, slave_crtc->base.name,
+				    master_crtc->base.base.id, master_crtc->base.name);
+			return -EINVAL;
+		}
+
+		/*
+		 * The state copy logic assumes the master crtc gets processed
+		 * before the slave crtc during the main compute_config loop.
+		 * This works because the crtcs are created in pipe order,
+		 * and the hardware requires master pipe < slave pipe as well.
+		 * Should that change we need to rethink the logic.
+		 */
+		if (WARN_ON(drm_crtc_index(&master_crtc->base) >
+			    drm_crtc_index(&slave_crtc->base)))
+			return -EINVAL;
+
+		drm_dbg_kms(&i915->drm,
+			    "[CRTC:%d:%s] Used as slave for big joiner master [CRTC:%d:%s]\n",
+			    slave_crtc->base.base.id, slave_crtc->base.name,
+			    master_crtc->base.base.id, master_crtc->base.name);
+
+		slave_crtc_state->bigjoiner_pipes =
+			master_crtc_state->bigjoiner_pipes;
+
+		ret = copy_bigjoiner_crtc_state_modeset(state, slave_crtc);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static void kill_bigjoiner_slave(struct intel_atomic_state *state,
+				 struct intel_crtc *master_crtc)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	struct intel_crtc_state *master_crtc_state =
+		intel_atomic_get_new_crtc_state(state, master_crtc);
+	struct intel_crtc *slave_crtc;
+
+	for_each_intel_crtc_in_pipe_mask(&i915->drm, slave_crtc,
+					 intel_crtc_bigjoiner_slave_pipes(master_crtc_state)) {
+		struct intel_crtc_state *slave_crtc_state =
+			intel_atomic_get_new_crtc_state(state, slave_crtc);
+
+		slave_crtc_state->bigjoiner_pipes = 0;
+
+		intel_crtc_copy_uapi_to_hw_state_modeset(state, slave_crtc);
+	}
+
+	master_crtc_state->bigjoiner_pipes = 0;
+}
+
+/**
+ * DOC: asynchronous flip implementation
+ *
+ * Asynchronous page flip is the implementation for the DRM_MODE_PAGE_FLIP_ASYNC
+ * flag. Currently async flip is only supported via the drmModePageFlip IOCTL.
+ * Correspondingly, support is currently added for primary plane only.
+ *
+ * Async flip can only change the plane surface address, so anything else
+ * changing is rejected from the intel_async_flip_check_hw() function.
+ * Once this check is cleared, flip done interrupt is enabled using
+ * the intel_crtc_enable_flip_done() function.
+ *
+ * As soon as the surface address register is written, flip done interrupt is
+ * generated and the requested events are sent to the usersapce in the interrupt
+ * handler itself. The timestamp and sequence sent during the flip done event
+ * correspond to the last vblank and have no relation to the actual time when
+ * the flip done event was sent.
+ */
+static int intel_async_flip_check_uapi(struct intel_atomic_state *state,
+				       struct intel_crtc *crtc)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_crtc_state *new_crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	const struct intel_plane_state *old_plane_state;
+	struct intel_plane_state *new_plane_state;
+	struct intel_plane *plane;
+	int i;
+
+	if (!new_crtc_state->uapi.async_flip)
+		return 0;
+
+	if (!new_crtc_state->uapi.active) {
+		drm_dbg_kms(&i915->drm,
+			    "[CRTC:%d:%s] not active\n",
+			    crtc->base.base.id, crtc->base.name);
+		return -EINVAL;
+	}
+
+	if (intel_crtc_needs_modeset(new_crtc_state)) {
+		drm_dbg_kms(&i915->drm,
+			    "[CRTC:%d:%s] modeset required\n",
+			    crtc->base.base.id, crtc->base.name);
+		return -EINVAL;
+	}
+
+	/*
+	 * FIXME: Bigjoiner+async flip is busted currently.
+	 * Remove this check once the issues are fixed.
+	 */
+	if (new_crtc_state->bigjoiner_pipes) {
+		drm_dbg_kms(&i915->drm,
+			    "[CRTC:%d:%s] async flip disallowed with bigjoiner\n",
+			    crtc->base.base.id, crtc->base.name);
+		return -EINVAL;
+	}
+
+	for_each_oldnew_intel_plane_in_state(state, plane, old_plane_state,
+					     new_plane_state, i) {
+		if (plane->pipe != crtc->pipe)
+			continue;
+
+		/*
+		 * TODO: Async flip is only supported through the page flip IOCTL
+		 * as of now. So support currently added for primary plane only.
+		 * Support for other planes on platforms on which supports
+		 * this(vlv/chv and icl+) should be added when async flip is
+		 * enabled in the atomic IOCTL path.
+		 */
+		if (!plane->async_flip) {
+			drm_dbg_kms(&i915->drm,
+				    "[PLANE:%d:%s] async flip not supported\n",
+				    plane->base.base.id, plane->base.name);
+			return -EINVAL;
+		}
+
+		if (!old_plane_state->uapi.fb || !new_plane_state->uapi.fb) {
+			drm_dbg_kms(&i915->drm,
+				    "[PLANE:%d:%s] no old or new framebuffer\n",
+				    plane->base.base.id, plane->base.name);
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}
+
+static int intel_async_flip_check_hw(struct intel_atomic_state *state, struct intel_crtc *crtc)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_crtc_state *old_crtc_state, *new_crtc_state;
+	const struct intel_plane_state *new_plane_state, *old_plane_state;
+	struct intel_plane *plane;
+	int i;
+
+	old_crtc_state = intel_atomic_get_old_crtc_state(state, crtc);
+	new_crtc_state = intel_atomic_get_new_crtc_state(state, crtc);
+
+	if (!new_crtc_state->uapi.async_flip)
+		return 0;
+
+	if (!new_crtc_state->hw.active) {
+		drm_dbg_kms(&i915->drm,
+			    "[CRTC:%d:%s] not active\n",
+			    crtc->base.base.id, crtc->base.name);
+		return -EINVAL;
+	}
+
+	if (intel_crtc_needs_modeset(new_crtc_state)) {
+		drm_dbg_kms(&i915->drm,
+			    "[CRTC:%d:%s] modeset required\n",
+			    crtc->base.base.id, crtc->base.name);
+		return -EINVAL;
+	}
+
+	if (old_crtc_state->active_planes != new_crtc_state->active_planes) {
+		drm_dbg_kms(&i915->drm,
+			    "[CRTC:%d:%s] Active planes cannot be in async flip\n",
+			    crtc->base.base.id, crtc->base.name);
+		return -EINVAL;
+	}
+
+	for_each_oldnew_intel_plane_in_state(state, plane, old_plane_state,
+					     new_plane_state, i) {
+		if (plane->pipe != crtc->pipe)
+			continue;
+
+		/*
+		 * Only async flip capable planes should be in the state
+		 * if we're really about to ask the hardware to perform
+		 * an async flip. We should never get this far otherwise.
+		 */
+		if (drm_WARN_ON(&i915->drm,
+				new_crtc_state->do_async_flip && !plane->async_flip))
+			return -EINVAL;
+
+		/*
+		 * Only check async flip capable planes other planes
+		 * may be involved in the initial commit due to
+		 * the wm0/ddb optimization.
+		 *
+		 * TODO maybe should track which planes actually
+		 * were requested to do the async flip...
+		 */
+		if (!plane->async_flip)
+			continue;
+
+		/*
+		 * FIXME: This check is kept generic for all platforms.
+		 * Need to verify this for all gen9 platforms to enable
+		 * this selectively if required.
+		 */
+		switch (new_plane_state->hw.fb->modifier) {
+		case I915_FORMAT_MOD_X_TILED:
+		case I915_FORMAT_MOD_Y_TILED:
+		case I915_FORMAT_MOD_Yf_TILED:
+		case I915_FORMAT_MOD_4_TILED:
+			break;
+		default:
+			drm_dbg_kms(&i915->drm,
+				    "[PLANE:%d:%s] Modifier does not support async flips\n",
+				    plane->base.base.id, plane->base.name);
+			return -EINVAL;
+		}
+
+		if (new_plane_state->hw.fb->format->num_planes > 1) {
+			drm_dbg_kms(&i915->drm,
+				    "[PLANE:%d:%s] Planar formats do not support async flips\n",
+				    plane->base.base.id, plane->base.name);
+			return -EINVAL;
+		}
+
+		if (old_plane_state->view.color_plane[0].mapping_stride !=
+		    new_plane_state->view.color_plane[0].mapping_stride) {
+			drm_dbg_kms(&i915->drm,
+				    "[PLANE:%d:%s] Stride cannot be changed in async flip\n",
+				    plane->base.base.id, plane->base.name);
+			return -EINVAL;
+		}
+
+		if (old_plane_state->hw.fb->modifier !=
+		    new_plane_state->hw.fb->modifier) {
+			drm_dbg_kms(&i915->drm,
+				    "[PLANE:%d:%s] Modifier cannot be changed in async flip\n",
+				    plane->base.base.id, plane->base.name);
+			return -EINVAL;
+		}
+
+		if (old_plane_state->hw.fb->format !=
+		    new_plane_state->hw.fb->format) {
+			drm_dbg_kms(&i915->drm,
+				    "[PLANE:%d:%s] Pixel format cannot be changed in async flip\n",
+				    plane->base.base.id, plane->base.name);
+			return -EINVAL;
+		}
+
+		if (old_plane_state->hw.rotation !=
+		    new_plane_state->hw.rotation) {
+			drm_dbg_kms(&i915->drm,
+				    "[PLANE:%d:%s] Rotation cannot be changed in async flip\n",
+				    plane->base.base.id, plane->base.name);
+			return -EINVAL;
+		}
+
+		if (!drm_rect_equals(&old_plane_state->uapi.src, &new_plane_state->uapi.src) ||
+		    !drm_rect_equals(&old_plane_state->uapi.dst, &new_plane_state->uapi.dst)) {
+			drm_dbg_kms(&i915->drm,
+				    "[PLANE:%d:%s] Size/co-ordinates cannot be changed in async flip\n",
+				    plane->base.base.id, plane->base.name);
+			return -EINVAL;
+		}
+
+		if (old_plane_state->hw.alpha != new_plane_state->hw.alpha) {
+			drm_dbg_kms(&i915->drm,
+				    "[PLANES:%d:%s] Alpha value cannot be changed in async flip\n",
+				    plane->base.base.id, plane->base.name);
+			return -EINVAL;
+		}
+
+		if (old_plane_state->hw.pixel_blend_mode !=
+		    new_plane_state->hw.pixel_blend_mode) {
+			drm_dbg_kms(&i915->drm,
+				    "[PLANE:%d:%s] Pixel blend mode cannot be changed in async flip\n",
+				    plane->base.base.id, plane->base.name);
+			return -EINVAL;
+		}
+
+		if (old_plane_state->hw.color_encoding != new_plane_state->hw.color_encoding) {
+			drm_dbg_kms(&i915->drm,
+				    "[PLANE:%d:%s] Color encoding cannot be changed in async flip\n",
+				    plane->base.base.id, plane->base.name);
+			return -EINVAL;
+		}
+
+		if (old_plane_state->hw.color_range != new_plane_state->hw.color_range) {
+			drm_dbg_kms(&i915->drm,
+				    "[PLANE:%d:%s] Color range cannot be changed in async flip\n",
+				    plane->base.base.id, plane->base.name);
+			return -EINVAL;
+		}
+
+		/* plane decryption is allow to change only in synchronous flips */
+		if (old_plane_state->decrypt != new_plane_state->decrypt) {
+			drm_dbg_kms(&i915->drm,
+				    "[PLANE:%d:%s] Decryption cannot be changed in async flip\n",
+				    plane->base.base.id, plane->base.name);
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}
+
+static int intel_bigjoiner_add_affected_crtcs(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	struct intel_crtc_state *crtc_state;
+	struct intel_crtc *crtc;
+	u8 affected_pipes = 0;
+	u8 modeset_pipes = 0;
+	int i;
+
+	for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) {
+		affected_pipes |= crtc_state->bigjoiner_pipes;
+		if (intel_crtc_needs_modeset(crtc_state))
+			modeset_pipes |= crtc_state->bigjoiner_pipes;
+	}
+
+	for_each_intel_crtc_in_pipe_mask(&i915->drm, crtc, affected_pipes) {
+		crtc_state = intel_atomic_get_crtc_state(&state->base, crtc);
+		if (IS_ERR(crtc_state))
+			return PTR_ERR(crtc_state);
+	}
+
+	for_each_intel_crtc_in_pipe_mask(&i915->drm, crtc, modeset_pipes) {
+		int ret;
+
+		crtc_state = intel_atomic_get_new_crtc_state(state, crtc);
+
+		crtc_state->uapi.mode_changed = true;
+
+		ret = drm_atomic_add_affected_connectors(&state->base, &crtc->base);
+		if (ret)
+			return ret;
+
+		ret = intel_atomic_add_affected_planes(state, crtc);
+		if (ret)
+			return ret;
+	}
+
+	for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) {
+		/* Kill old bigjoiner link, we may re-establish afterwards */
+		if (intel_crtc_needs_modeset(crtc_state) &&
+		    intel_crtc_is_bigjoiner_master(crtc_state))
+			kill_bigjoiner_slave(state, crtc);
+	}
+
+	return 0;
+}
+
+/**
+ * intel_atomic_check - validate state object
+ * @dev: drm device
+ * @_state: state to validate
+ */
+static int intel_atomic_check(struct drm_device *dev,
+			      struct drm_atomic_state *_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_atomic_state *state = to_intel_atomic_state(_state);
+	struct intel_crtc_state *old_crtc_state, *new_crtc_state;
+	struct intel_crtc *crtc;
+	int ret, i;
+	bool any_ms = false;
+
+	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
+					    new_crtc_state, i) {
+		if (new_crtc_state->inherited != old_crtc_state->inherited)
+			new_crtc_state->uapi.mode_changed = true;
+
+		if (new_crtc_state->uapi.scaling_filter !=
+		    old_crtc_state->uapi.scaling_filter)
+			new_crtc_state->uapi.mode_changed = true;
+	}
+
+	intel_vrr_check_modeset(state);
+
+	ret = drm_atomic_helper_check_modeset(dev, &state->base);
+	if (ret)
+		goto fail;
+
+	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
+		ret = intel_async_flip_check_uapi(state, crtc);
+		if (ret)
+			return ret;
+	}
+
+	ret = intel_bigjoiner_add_affected_crtcs(state);
+	if (ret)
+		goto fail;
+
+	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
+					    new_crtc_state, i) {
+		if (!intel_crtc_needs_modeset(new_crtc_state)) {
+			if (intel_crtc_is_bigjoiner_slave(new_crtc_state))
+				copy_bigjoiner_crtc_state_nomodeset(state, crtc);
+			else
+				intel_crtc_copy_uapi_to_hw_state_nomodeset(state, crtc);
+			continue;
+		}
+
+		if (intel_crtc_is_bigjoiner_slave(new_crtc_state)) {
+			drm_WARN_ON(&dev_priv->drm, new_crtc_state->uapi.enable);
+			continue;
+		}
+
+		ret = intel_crtc_prepare_cleared_state(state, crtc);
+		if (ret)
+			goto fail;
+
+		if (!new_crtc_state->hw.enable)
+			continue;
+
+		ret = intel_modeset_pipe_config(state, crtc);
+		if (ret)
+			goto fail;
+
+		ret = intel_atomic_check_bigjoiner(state, crtc);
+		if (ret)
+			goto fail;
+	}
+
+	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
+					    new_crtc_state, i) {
+		if (!intel_crtc_needs_modeset(new_crtc_state))
+			continue;
+
+		if (new_crtc_state->hw.enable) {
+			ret = intel_modeset_pipe_config_late(state, crtc);
+			if (ret)
+				goto fail;
+		}
+
+		intel_crtc_check_fastset(old_crtc_state, new_crtc_state);
+	}
+
+	/**
+	 * Check if fastset is allowed by external dependencies like other
+	 * pipes and transcoders.
+	 *
+	 * Right now it only forces a fullmodeset when the MST master
+	 * transcoder did not changed but the pipe of the master transcoder
+	 * needs a fullmodeset so all slaves also needs to do a fullmodeset or
+	 * in case of port synced crtcs, if one of the synced crtcs
+	 * needs a full modeset, all other synced crtcs should be
+	 * forced a full modeset.
+	 */
+	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
+		if (!new_crtc_state->hw.enable || intel_crtc_needs_modeset(new_crtc_state))
+			continue;
+
+		if (intel_dp_mst_is_slave_trans(new_crtc_state)) {
+			enum transcoder master = new_crtc_state->mst_master_transcoder;
+
+			if (intel_cpu_transcoders_need_modeset(state, BIT(master))) {
+				new_crtc_state->uapi.mode_changed = true;
+				new_crtc_state->update_pipe = false;
+			}
+		}
+
+		if (is_trans_port_sync_mode(new_crtc_state)) {
+			u8 trans = new_crtc_state->sync_mode_slaves_mask;
+
+			if (new_crtc_state->master_transcoder != INVALID_TRANSCODER)
+				trans |= BIT(new_crtc_state->master_transcoder);
+
+			if (intel_cpu_transcoders_need_modeset(state, trans)) {
+				new_crtc_state->uapi.mode_changed = true;
+				new_crtc_state->update_pipe = false;
+			}
+		}
+
+		if (new_crtc_state->bigjoiner_pipes) {
+			if (intel_pipes_need_modeset(state, new_crtc_state->bigjoiner_pipes)) {
+				new_crtc_state->uapi.mode_changed = true;
+				new_crtc_state->update_pipe = false;
+			}
+		}
+	}
+
+	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
+					    new_crtc_state, i) {
+		if (!intel_crtc_needs_modeset(new_crtc_state))
+			continue;
+
+		any_ms = true;
+
+		intel_release_shared_dplls(state, crtc);
+	}
+
+	if (any_ms && !check_digital_port_conflicts(state)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "rejecting conflicting digital port configuration\n");
+		ret = -EINVAL;
+		goto fail;
+	}
+
+	ret = drm_dp_mst_atomic_check(&state->base);
+	if (ret)
+		goto fail;
+
+	ret = intel_atomic_check_planes(state);
+	if (ret)
+		goto fail;
+
+	ret = intel_compute_global_watermarks(state);
+	if (ret)
+		goto fail;
+
+	ret = intel_bw_atomic_check(state);
+	if (ret)
+		goto fail;
+
+	ret = intel_cdclk_atomic_check(state, &any_ms);
+	if (ret)
+		goto fail;
+
+	if (intel_any_crtc_needs_modeset(state))
+		any_ms = true;
+
+	if (any_ms) {
+		ret = intel_modeset_checks(state);
+		if (ret)
+			goto fail;
+
+		ret = intel_modeset_calc_cdclk(state);
+		if (ret)
+			return ret;
+	}
+
+	ret = intel_atomic_check_crtcs(state);
+	if (ret)
+		goto fail;
+
+	ret = intel_fbc_atomic_check(state);
+	if (ret)
+		goto fail;
+
+	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
+					    new_crtc_state, i) {
+		ret = intel_async_flip_check_hw(state, crtc);
+		if (ret)
+			goto fail;
+
+		if (!intel_crtc_needs_modeset(new_crtc_state) &&
+		    !new_crtc_state->update_pipe)
+			continue;
+
+		intel_crtc_state_dump(new_crtc_state, state,
+				      intel_crtc_needs_modeset(new_crtc_state) ?
+				      "modeset" : "fastset");
+	}
+
+	return 0;
+
+ fail:
+	if (ret == -EDEADLK)
+		return ret;
+
+	/*
+	 * FIXME would probably be nice to know which crtc specifically
+	 * caused the failure, in cases where we can pinpoint it.
+	 */
+	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
+					    new_crtc_state, i)
+		intel_crtc_state_dump(new_crtc_state, state, "failed");
+
+	return ret;
+}
+
+static int intel_atomic_prepare_commit(struct intel_atomic_state *state)
+{
+	struct intel_crtc_state *crtc_state;
+	struct intel_crtc *crtc;
+	int i, ret;
+
+	ret = drm_atomic_helper_prepare_planes(state->base.dev, &state->base);
+	if (ret < 0)
+		return ret;
+
+	for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) {
+		bool mode_changed = intel_crtc_needs_modeset(crtc_state);
+
+		if (mode_changed || crtc_state->update_pipe ||
+		    crtc_state->uapi.color_mgmt_changed) {
+			intel_dsb_prepare(crtc_state);
+		}
+	}
+
+	return 0;
+}
+
+void intel_crtc_arm_fifo_underrun(struct intel_crtc *crtc,
+				  struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+
+	if (DISPLAY_VER(dev_priv) != 2 || crtc_state->active_planes)
+		intel_set_cpu_fifo_underrun_reporting(dev_priv, crtc->pipe, true);
+
+	if (crtc_state->has_pch_encoder) {
+		enum pipe pch_transcoder =
+			intel_crtc_pch_transcoder(crtc);
+
+		intel_set_pch_fifo_underrun_reporting(dev_priv, pch_transcoder, true);
+	}
+}
+
+static void intel_pipe_fastset(const struct intel_crtc_state *old_crtc_state,
+			       const struct intel_crtc_state *new_crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+
+	/*
+	 * Update pipe size and adjust fitter if needed: the reason for this is
+	 * that in compute_mode_changes we check the native mode (not the pfit
+	 * mode) to see if we can flip rather than do a full mode set. In the
+	 * fastboot case, we'll flip, but if we don't update the pipesrc and
+	 * pfit state, we'll end up with a big fb scanned out into the wrong
+	 * sized surface.
+	 */
+	intel_set_pipe_src_size(new_crtc_state);
+
+	/* on skylake this is done by detaching scalers */
+	if (DISPLAY_VER(dev_priv) >= 9) {
+		if (new_crtc_state->pch_pfit.enabled)
+			skl_pfit_enable(new_crtc_state);
+	} else if (HAS_PCH_SPLIT(dev_priv)) {
+		if (new_crtc_state->pch_pfit.enabled)
+			ilk_pfit_enable(new_crtc_state);
+		else if (old_crtc_state->pch_pfit.enabled)
+			ilk_pfit_disable(old_crtc_state);
+	}
+
+	/*
+	 * The register is supposedly single buffered so perhaps
+	 * not 100% correct to do this here. But SKL+ calculate
+	 * this based on the adjust pixel rate so pfit changes do
+	 * affect it and so it must be updated for fastsets.
+	 * HSW/BDW only really need this here for fastboot, after
+	 * that the value should not change without a full modeset.
+	 */
+	if (DISPLAY_VER(dev_priv) >= 9 ||
+	    IS_BROADWELL(dev_priv) || IS_HASWELL(dev_priv))
+		hsw_set_linetime_wm(new_crtc_state);
+
+	if (new_crtc_state->seamless_m_n)
+		intel_cpu_transcoder_set_m1_n1(crtc, new_crtc_state->cpu_transcoder,
+					       &new_crtc_state->dp_m_n);
+}
+
+static void commit_pipe_pre_planes(struct intel_atomic_state *state,
+				   struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	const struct intel_crtc_state *old_crtc_state =
+		intel_atomic_get_old_crtc_state(state, crtc);
+	const struct intel_crtc_state *new_crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	bool modeset = intel_crtc_needs_modeset(new_crtc_state);
+
+	/*
+	 * During modesets pipe configuration was programmed as the
+	 * CRTC was enabled.
+	 */
+	if (!modeset) {
+		if (new_crtc_state->uapi.color_mgmt_changed ||
+		    new_crtc_state->update_pipe)
+			intel_color_commit_arm(new_crtc_state);
+
+		if (DISPLAY_VER(dev_priv) >= 9 || IS_BROADWELL(dev_priv))
+			bdw_set_pipemisc(new_crtc_state);
+
+		if (new_crtc_state->update_pipe)
+			intel_pipe_fastset(old_crtc_state, new_crtc_state);
+	}
+
+	intel_psr2_program_trans_man_trk_ctl(new_crtc_state);
+
+	intel_atomic_update_watermarks(state, crtc);
+}
+
+static void commit_pipe_post_planes(struct intel_atomic_state *state,
+				    struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	const struct intel_crtc_state *new_crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+
+	/*
+	 * Disable the scaler(s) after the plane(s) so that we don't
+	 * get a catastrophic underrun even if the two operations
+	 * end up happening in two different frames.
+	 */
+	if (DISPLAY_VER(dev_priv) >= 9 &&
+	    !intel_crtc_needs_modeset(new_crtc_state))
+		skl_detach_scalers(new_crtc_state);
+}
+
+static void intel_enable_crtc(struct intel_atomic_state *state,
+			      struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	const struct intel_crtc_state *new_crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+
+	if (!intel_crtc_needs_modeset(new_crtc_state))
+		return;
+
+	intel_crtc_update_active_timings(new_crtc_state);
+
+	dev_priv->display.funcs.display->crtc_enable(state, crtc);
+
+	if (intel_crtc_is_bigjoiner_slave(new_crtc_state))
+		return;
+
+	/* vblanks work again, re-enable pipe CRC. */
+	intel_crtc_enable_pipe_crc(crtc);
+}
+
+static void intel_update_crtc(struct intel_atomic_state *state,
+			      struct intel_crtc *crtc)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_crtc_state *old_crtc_state =
+		intel_atomic_get_old_crtc_state(state, crtc);
+	struct intel_crtc_state *new_crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	bool modeset = intel_crtc_needs_modeset(new_crtc_state);
+
+	if (!modeset) {
+		if (new_crtc_state->preload_luts &&
+		    (new_crtc_state->uapi.color_mgmt_changed ||
+		     new_crtc_state->update_pipe))
+			intel_color_load_luts(new_crtc_state);
+
+		intel_pre_plane_update(state, crtc);
+
+		if (new_crtc_state->update_pipe)
+			intel_encoders_update_pipe(state, crtc);
+
+		if (DISPLAY_VER(i915) >= 11 &&
+		    new_crtc_state->update_pipe)
+			icl_set_pipe_chicken(new_crtc_state);
+	}
+
+	intel_fbc_update(state, crtc);
+
+	if (!modeset &&
+	    (new_crtc_state->uapi.color_mgmt_changed ||
+	     new_crtc_state->update_pipe))
+		intel_color_commit_noarm(new_crtc_state);
+
+	intel_crtc_planes_update_noarm(state, crtc);
+
+	/* Perform vblank evasion around commit operation */
+	intel_pipe_update_start(new_crtc_state);
+
+	commit_pipe_pre_planes(state, crtc);
+
+	intel_crtc_planes_update_arm(state, crtc);
+
+	commit_pipe_post_planes(state, crtc);
+
+	intel_pipe_update_end(new_crtc_state);
+
+	/*
+	 * We usually enable FIFO underrun interrupts as part of the
+	 * CRTC enable sequence during modesets.  But when we inherit a
+	 * valid pipe configuration from the BIOS we need to take care
+	 * of enabling them on the CRTC's first fastset.
+	 */
+	if (new_crtc_state->update_pipe && !modeset &&
+	    old_crtc_state->inherited)
+		intel_crtc_arm_fifo_underrun(crtc, new_crtc_state);
+}
+
+static void intel_old_crtc_state_disables(struct intel_atomic_state *state,
+					  struct intel_crtc_state *old_crtc_state,
+					  struct intel_crtc_state *new_crtc_state,
+					  struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+
+	/*
+	 * We need to disable pipe CRC before disabling the pipe,
+	 * or we race against vblank off.
+	 */
+	intel_crtc_disable_pipe_crc(crtc);
+
+	dev_priv->display.funcs.display->crtc_disable(state, crtc);
+	crtc->active = false;
+	intel_fbc_disable(crtc);
+	intel_disable_shared_dpll(old_crtc_state);
+
+	/* FIXME unify this for all platforms */
+	if (!new_crtc_state->hw.active &&
+	    !HAS_GMCH(dev_priv))
+		intel_initial_watermarks(state, crtc);
+}
+
+static void intel_commit_modeset_disables(struct intel_atomic_state *state)
+{
+	struct intel_crtc_state *new_crtc_state, *old_crtc_state;
+	struct intel_crtc *crtc;
+	u32 handled = 0;
+	int i;
+
+	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
+					    new_crtc_state, i) {
+		if (!intel_crtc_needs_modeset(new_crtc_state))
+			continue;
+
+		if (!old_crtc_state->hw.active)
+			continue;
+
+		intel_pre_plane_update(state, crtc);
+		intel_crtc_disable_planes(state, crtc);
+	}
+
+	/* Only disable port sync and MST slaves */
+	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
+					    new_crtc_state, i) {
+		if (!intel_crtc_needs_modeset(new_crtc_state))
+			continue;
+
+		if (!old_crtc_state->hw.active)
+			continue;
+
+		/* In case of Transcoder port Sync master slave CRTCs can be
+		 * assigned in any order and we need to make sure that
+		 * slave CRTCs are disabled first and then master CRTC since
+		 * Slave vblanks are masked till Master Vblanks.
+		 */
+		if (!is_trans_port_sync_slave(old_crtc_state) &&
+		    !intel_dp_mst_is_slave_trans(old_crtc_state) &&
+		    !intel_crtc_is_bigjoiner_slave(old_crtc_state))
+			continue;
+
+		intel_old_crtc_state_disables(state, old_crtc_state,
+					      new_crtc_state, crtc);
+		handled |= BIT(crtc->pipe);
+	}
+
+	/* Disable everything else left on */
+	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
+					    new_crtc_state, i) {
+		if (!intel_crtc_needs_modeset(new_crtc_state) ||
+		    (handled & BIT(crtc->pipe)))
+			continue;
+
+		if (!old_crtc_state->hw.active)
+			continue;
+
+		intel_old_crtc_state_disables(state, old_crtc_state,
+					      new_crtc_state, crtc);
+	}
+}
+
+static void intel_commit_modeset_enables(struct intel_atomic_state *state)
+{
+	struct intel_crtc_state *new_crtc_state;
+	struct intel_crtc *crtc;
+	int i;
+
+	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
+		if (!new_crtc_state->hw.active)
+			continue;
+
+		intel_enable_crtc(state, crtc);
+		intel_update_crtc(state, crtc);
+	}
+}
+
+static void skl_commit_modeset_enables(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct intel_crtc *crtc;
+	struct intel_crtc_state *old_crtc_state, *new_crtc_state;
+	struct skl_ddb_entry entries[I915_MAX_PIPES] = {};
+	u8 update_pipes = 0, modeset_pipes = 0;
+	int i;
+
+	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
+		enum pipe pipe = crtc->pipe;
+
+		if (!new_crtc_state->hw.active)
+			continue;
+
+		/* ignore allocations for crtc's that have been turned off. */
+		if (!intel_crtc_needs_modeset(new_crtc_state)) {
+			entries[pipe] = old_crtc_state->wm.skl.ddb;
+			update_pipes |= BIT(pipe);
+		} else {
+			modeset_pipes |= BIT(pipe);
+		}
+	}
+
+	/*
+	 * Whenever the number of active pipes changes, we need to make sure we
+	 * update the pipes in the right order so that their ddb allocations
+	 * never overlap with each other between CRTC updates. Otherwise we'll
+	 * cause pipe underruns and other bad stuff.
+	 *
+	 * So first lets enable all pipes that do not need a fullmodeset as
+	 * those don't have any external dependency.
+	 */
+	while (update_pipes) {
+		for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
+						    new_crtc_state, i) {
+			enum pipe pipe = crtc->pipe;
+
+			if ((update_pipes & BIT(pipe)) == 0)
+				continue;
+
+			if (skl_ddb_allocation_overlaps(&new_crtc_state->wm.skl.ddb,
+							entries, I915_MAX_PIPES, pipe))
+				continue;
+
+			entries[pipe] = new_crtc_state->wm.skl.ddb;
+			update_pipes &= ~BIT(pipe);
+
+			intel_update_crtc(state, crtc);
+
+			/*
+			 * If this is an already active pipe, it's DDB changed,
+			 * and this isn't the last pipe that needs updating
+			 * then we need to wait for a vblank to pass for the
+			 * new ddb allocation to take effect.
+			 */
+			if (!skl_ddb_entry_equal(&new_crtc_state->wm.skl.ddb,
+						 &old_crtc_state->wm.skl.ddb) &&
+			    (update_pipes | modeset_pipes))
+				intel_crtc_wait_for_next_vblank(crtc);
+		}
+	}
+
+	update_pipes = modeset_pipes;
+
+	/*
+	 * Enable all pipes that needs a modeset and do not depends on other
+	 * pipes
+	 */
+	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
+		enum pipe pipe = crtc->pipe;
+
+		if ((modeset_pipes & BIT(pipe)) == 0)
+			continue;
+
+		if (intel_dp_mst_is_slave_trans(new_crtc_state) ||
+		    is_trans_port_sync_master(new_crtc_state) ||
+		    intel_crtc_is_bigjoiner_master(new_crtc_state))
+			continue;
+
+		modeset_pipes &= ~BIT(pipe);
+
+		intel_enable_crtc(state, crtc);
+	}
+
+	/*
+	 * Then we enable all remaining pipes that depend on other
+	 * pipes: MST slaves and port sync masters, big joiner master
+	 */
+	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
+		enum pipe pipe = crtc->pipe;
+
+		if ((modeset_pipes & BIT(pipe)) == 0)
+			continue;
+
+		modeset_pipes &= ~BIT(pipe);
+
+		intel_enable_crtc(state, crtc);
+	}
+
+	/*
+	 * Finally we do the plane updates/etc. for all pipes that got enabled.
+	 */
+	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
+		enum pipe pipe = crtc->pipe;
+
+		if ((update_pipes & BIT(pipe)) == 0)
+			continue;
+
+		drm_WARN_ON(&dev_priv->drm, skl_ddb_allocation_overlaps(&new_crtc_state->wm.skl.ddb,
+									entries, I915_MAX_PIPES, pipe));
+
+		entries[pipe] = new_crtc_state->wm.skl.ddb;
+		update_pipes &= ~BIT(pipe);
+
+		intel_update_crtc(state, crtc);
+	}
+
+	drm_WARN_ON(&dev_priv->drm, modeset_pipes);
+	drm_WARN_ON(&dev_priv->drm, update_pipes);
+}
+
+static void intel_atomic_helper_free_state(struct drm_i915_private *dev_priv)
+{
+	struct intel_atomic_state *state, *next;
+	struct llist_node *freed;
+
+	freed = llist_del_all(&dev_priv->display.atomic_helper.free_list);
+	llist_for_each_entry_safe(state, next, freed, freed)
+		drm_atomic_state_put(&state->base);
+}
+
+static void intel_atomic_helper_free_state_worker(struct work_struct *work)
+{
+	struct drm_i915_private *dev_priv =
+		container_of(work, typeof(*dev_priv), display.atomic_helper.free_work);
+
+	intel_atomic_helper_free_state(dev_priv);
+}
+
+static void intel_atomic_commit_fence_wait(struct intel_atomic_state *intel_state)
+{
+	struct wait_queue_entry wait_fence, wait_reset;
+	struct drm_i915_private *dev_priv = to_i915(intel_state->base.dev);
+
+	init_wait_entry(&wait_fence, 0);
+	init_wait_entry(&wait_reset, 0);
+	for (;;) {
+		prepare_to_wait(&intel_state->commit_ready.wait,
+				&wait_fence, TASK_UNINTERRUPTIBLE);
+		prepare_to_wait(bit_waitqueue(&to_gt(dev_priv)->reset.flags,
+					      I915_RESET_MODESET),
+				&wait_reset, TASK_UNINTERRUPTIBLE);
+
+
+		if (i915_sw_fence_done(&intel_state->commit_ready) ||
+		    test_bit(I915_RESET_MODESET, &to_gt(dev_priv)->reset.flags))
+			break;
+
+		schedule();
+	}
+	finish_wait(&intel_state->commit_ready.wait, &wait_fence);
+	finish_wait(bit_waitqueue(&to_gt(dev_priv)->reset.flags,
+				  I915_RESET_MODESET),
+		    &wait_reset);
+}
+
+static void intel_cleanup_dsbs(struct intel_atomic_state *state)
+{
+	struct intel_crtc_state *old_crtc_state, *new_crtc_state;
+	struct intel_crtc *crtc;
+	int i;
+
+	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
+					    new_crtc_state, i)
+		intel_dsb_cleanup(old_crtc_state);
+}
+
+static void intel_atomic_cleanup_work(struct work_struct *work)
+{
+	struct intel_atomic_state *state =
+		container_of(work, struct intel_atomic_state, base.commit_work);
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+
+	intel_cleanup_dsbs(state);
+	drm_atomic_helper_cleanup_planes(&i915->drm, &state->base);
+	drm_atomic_helper_commit_cleanup_done(&state->base);
+	drm_atomic_state_put(&state->base);
+
+	intel_atomic_helper_free_state(i915);
+}
+
+static void intel_atomic_prepare_plane_clear_colors(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	struct intel_plane *plane;
+	struct intel_plane_state *plane_state;
+	int i;
+
+	for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
+		struct drm_framebuffer *fb = plane_state->hw.fb;
+		int cc_plane;
+		int ret;
+
+		if (!fb)
+			continue;
+
+		cc_plane = intel_fb_rc_ccs_cc_plane(fb);
+		if (cc_plane < 0)
+			continue;
+
+		/*
+		 * The layout of the fast clear color value expected by HW
+		 * (the DRM ABI requiring this value to be located in fb at
+		 * offset 0 of cc plane, plane #2 previous generations or
+		 * plane #1 for flat ccs):
+		 * - 4 x 4 bytes per-channel value
+		 *   (in surface type specific float/int format provided by the fb user)
+		 * - 8 bytes native color value used by the display
+		 *   (converted/written by GPU during a fast clear operation using the
+		 *    above per-channel values)
+		 *
+		 * The commit's FB prepare hook already ensured that FB obj is pinned and the
+		 * caller made sure that the object is synced wrt. the related color clear value
+		 * GPU write on it.
+		 */
+		ret = i915_gem_object_read_from_page(intel_fb_obj(fb),
+						     fb->offsets[cc_plane] + 16,
+						     &plane_state->ccval,
+						     sizeof(plane_state->ccval));
+		/* The above could only fail if the FB obj has an unexpected backing store type. */
+		drm_WARN_ON(&i915->drm, ret);
+	}
+}
+
+static void intel_atomic_commit_tail(struct intel_atomic_state *state)
+{
+	struct drm_device *dev = state->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_crtc_state *new_crtc_state, *old_crtc_state;
+	struct intel_crtc *crtc;
+	struct intel_power_domain_mask put_domains[I915_MAX_PIPES] = {};
+	intel_wakeref_t wakeref = 0;
+	int i;
+
+	intel_atomic_commit_fence_wait(state);
+
+	drm_atomic_helper_wait_for_dependencies(&state->base);
+	drm_dp_mst_atomic_wait_for_dependencies(&state->base);
+
+	if (state->modeset)
+		wakeref = intel_display_power_get(dev_priv, POWER_DOMAIN_MODESET);
+
+	intel_atomic_prepare_plane_clear_colors(state);
+
+	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
+					    new_crtc_state, i) {
+		if (intel_crtc_needs_modeset(new_crtc_state) ||
+		    new_crtc_state->update_pipe) {
+			intel_modeset_get_crtc_power_domains(new_crtc_state, &put_domains[crtc->pipe]);
+		}
+	}
+
+	intel_commit_modeset_disables(state);
+
+	/* FIXME: Eventually get rid of our crtc->config pointer */
+	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i)
+		crtc->config = new_crtc_state;
+
+	if (state->modeset) {
+		drm_atomic_helper_update_legacy_modeset_state(dev, &state->base);
+
+		intel_set_cdclk_pre_plane_update(state);
+
+		intel_modeset_verify_disabled(dev_priv, state);
+	}
+
+	intel_sagv_pre_plane_update(state);
+
+	/* Complete the events for pipes that have now been disabled */
+	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
+		bool modeset = intel_crtc_needs_modeset(new_crtc_state);
+
+		/* Complete events for now disable pipes here. */
+		if (modeset && !new_crtc_state->hw.active && new_crtc_state->uapi.event) {
+			spin_lock_irq(&dev->event_lock);
+			drm_crtc_send_vblank_event(&crtc->base,
+						   new_crtc_state->uapi.event);
+			spin_unlock_irq(&dev->event_lock);
+
+			new_crtc_state->uapi.event = NULL;
+		}
+	}
+
+	intel_encoders_update_prepare(state);
+
+	intel_dbuf_pre_plane_update(state);
+	intel_mbus_dbox_update(state);
+
+	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
+		if (new_crtc_state->do_async_flip)
+			intel_crtc_enable_flip_done(state, crtc);
+	}
+
+	/* Now enable the clocks, plane, pipe, and connectors that we set up. */
+	dev_priv->display.funcs.display->commit_modeset_enables(state);
+
+	intel_encoders_update_complete(state);
+
+	if (state->modeset)
+		intel_set_cdclk_post_plane_update(state);
+
+	intel_wait_for_vblank_workers(state);
+
+	/* FIXME: We should call drm_atomic_helper_commit_hw_done() here
+	 * already, but still need the state for the delayed optimization. To
+	 * fix this:
+	 * - wrap the optimization/post_plane_update stuff into a per-crtc work.
+	 * - schedule that vblank worker _before_ calling hw_done
+	 * - at the start of commit_tail, cancel it _synchrously
+	 * - switch over to the vblank wait helper in the core after that since
+	 *   we don't need out special handling any more.
+	 */
+	drm_atomic_helper_wait_for_flip_done(dev, &state->base);
+
+	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
+		if (new_crtc_state->do_async_flip)
+			intel_crtc_disable_flip_done(state, crtc);
+	}
+
+	/*
+	 * Now that the vblank has passed, we can go ahead and program the
+	 * optimal watermarks on platforms that need two-step watermark
+	 * programming.
+	 *
+	 * TODO: Move this (and other cleanup) to an async worker eventually.
+	 */
+	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
+					    new_crtc_state, i) {
+		/*
+		 * Gen2 reports pipe underruns whenever all planes are disabled.
+		 * So re-enable underrun reporting after some planes get enabled.
+		 *
+		 * We do this before .optimize_watermarks() so that we have a
+		 * chance of catching underruns with the intermediate watermarks
+		 * vs. the new plane configuration.
+		 */
+		if (DISPLAY_VER(dev_priv) == 2 && planes_enabling(old_crtc_state, new_crtc_state))
+			intel_set_cpu_fifo_underrun_reporting(dev_priv, crtc->pipe, true);
+
+		intel_optimize_watermarks(state, crtc);
+	}
+
+	intel_dbuf_post_plane_update(state);
+	intel_psr_post_plane_update(state);
+
+	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
+		intel_post_plane_update(state, crtc);
+
+		intel_modeset_put_crtc_power_domains(crtc, &put_domains[crtc->pipe]);
+
+		intel_modeset_verify_crtc(crtc, state, old_crtc_state, new_crtc_state);
+
+		/*
+		 * DSB cleanup is done in cleanup_work aligning with framebuffer
+		 * cleanup. So copy and reset the dsb structure to sync with
+		 * commit_done and later do dsb cleanup in cleanup_work.
+		 */
+		old_crtc_state->dsb = fetch_and_zero(&new_crtc_state->dsb);
+	}
+
+	/* Underruns don't always raise interrupts, so check manually */
+	intel_check_cpu_fifo_underruns(dev_priv);
+	intel_check_pch_fifo_underruns(dev_priv);
+
+	if (state->modeset)
+		intel_verify_planes(state);
+
+	intel_sagv_post_plane_update(state);
+
+	drm_atomic_helper_commit_hw_done(&state->base);
+
+	if (state->modeset) {
+		/* As one of the primary mmio accessors, KMS has a high
+		 * likelihood of triggering bugs in unclaimed access. After we
+		 * finish modesetting, see if an error has been flagged, and if
+		 * so enable debugging for the next modeset - and hope we catch
+		 * the culprit.
+		 */
+		intel_uncore_arm_unclaimed_mmio_detection(&dev_priv->uncore);
+		intel_display_power_put(dev_priv, POWER_DOMAIN_MODESET, wakeref);
+	}
+	intel_runtime_pm_put(&dev_priv->runtime_pm, state->wakeref);
+
+	/*
+	 * Defer the cleanup of the old state to a separate worker to not
+	 * impede the current task (userspace for blocking modesets) that
+	 * are executed inline. For out-of-line asynchronous modesets/flips,
+	 * deferring to a new worker seems overkill, but we would place a
+	 * schedule point (cond_resched()) here anyway to keep latencies
+	 * down.
+	 */
+	INIT_WORK(&state->base.commit_work, intel_atomic_cleanup_work);
+	queue_work(system_highpri_wq, &state->base.commit_work);
+}
+
+static void intel_atomic_commit_work(struct work_struct *work)
+{
+	struct intel_atomic_state *state =
+		container_of(work, struct intel_atomic_state, base.commit_work);
+
+	intel_atomic_commit_tail(state);
+}
+
+static int
+intel_atomic_commit_ready(struct i915_sw_fence *fence,
+			  enum i915_sw_fence_notify notify)
+{
+	struct intel_atomic_state *state =
+		container_of(fence, struct intel_atomic_state, commit_ready);
+
+	switch (notify) {
+	case FENCE_COMPLETE:
+		/* we do blocking waits in the worker, nothing to do here */
+		break;
+	case FENCE_FREE:
+		{
+			struct intel_atomic_helper *helper =
+				&to_i915(state->base.dev)->display.atomic_helper;
+
+			if (llist_add(&state->freed, &helper->free_list))
+				schedule_work(&helper->free_work);
+			break;
+		}
+	}
+
+	return NOTIFY_DONE;
+}
+
+static void intel_atomic_track_fbs(struct intel_atomic_state *state)
+{
+	struct intel_plane_state *old_plane_state, *new_plane_state;
+	struct intel_plane *plane;
+	int i;
+
+	for_each_oldnew_intel_plane_in_state(state, plane, old_plane_state,
+					     new_plane_state, i)
+		intel_frontbuffer_track(to_intel_frontbuffer(old_plane_state->hw.fb),
+					to_intel_frontbuffer(new_plane_state->hw.fb),
+					plane->frontbuffer_bit);
+}
+
+static int intel_atomic_commit(struct drm_device *dev,
+			       struct drm_atomic_state *_state,
+			       bool nonblock)
+{
+	struct intel_atomic_state *state = to_intel_atomic_state(_state);
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	int ret = 0;
+
+	state->wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
+
+	drm_atomic_state_get(&state->base);
+	i915_sw_fence_init(&state->commit_ready,
+			   intel_atomic_commit_ready);
+
+	/*
+	 * The intel_legacy_cursor_update() fast path takes care
+	 * of avoiding the vblank waits for simple cursor
+	 * movement and flips. For cursor on/off and size changes,
+	 * we want to perform the vblank waits so that watermark
+	 * updates happen during the correct frames. Gen9+ have
+	 * double buffered watermarks and so shouldn't need this.
+	 *
+	 * Unset state->legacy_cursor_update before the call to
+	 * drm_atomic_helper_setup_commit() because otherwise
+	 * drm_atomic_helper_wait_for_flip_done() is a noop and
+	 * we get FIFO underruns because we didn't wait
+	 * for vblank.
+	 *
+	 * FIXME doing watermarks and fb cleanup from a vblank worker
+	 * (assuming we had any) would solve these problems.
+	 */
+	if (DISPLAY_VER(dev_priv) < 9 && state->base.legacy_cursor_update) {
+		struct intel_crtc_state *new_crtc_state;
+		struct intel_crtc *crtc;
+		int i;
+
+		for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i)
+			if (new_crtc_state->wm.need_postvbl_update ||
+			    new_crtc_state->update_wm_post)
+				state->base.legacy_cursor_update = false;
+	}
+
+	ret = intel_atomic_prepare_commit(state);
+	if (ret) {
+		drm_dbg_atomic(&dev_priv->drm,
+			       "Preparing state failed with %i\n", ret);
+		i915_sw_fence_commit(&state->commit_ready);
+		intel_runtime_pm_put(&dev_priv->runtime_pm, state->wakeref);
+		return ret;
+	}
+
+	ret = drm_atomic_helper_setup_commit(&state->base, nonblock);
+	if (!ret)
+		ret = drm_atomic_helper_swap_state(&state->base, true);
+	if (!ret)
+		intel_atomic_swap_global_state(state);
+
+	if (ret) {
+		struct intel_crtc_state *new_crtc_state;
+		struct intel_crtc *crtc;
+		int i;
+
+		i915_sw_fence_commit(&state->commit_ready);
+
+		for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i)
+			intel_dsb_cleanup(new_crtc_state);
+
+		drm_atomic_helper_cleanup_planes(dev, &state->base);
+		intel_runtime_pm_put(&dev_priv->runtime_pm, state->wakeref);
+		return ret;
+	}
+	intel_shared_dpll_swap_state(state);
+	intel_atomic_track_fbs(state);
+
+	drm_atomic_state_get(&state->base);
+	INIT_WORK(&state->base.commit_work, intel_atomic_commit_work);
+
+	i915_sw_fence_commit(&state->commit_ready);
+	if (nonblock && state->modeset) {
+		queue_work(dev_priv->display.wq.modeset, &state->base.commit_work);
+	} else if (nonblock) {
+		queue_work(dev_priv->display.wq.flip, &state->base.commit_work);
+	} else {
+		if (state->modeset)
+			flush_workqueue(dev_priv->display.wq.modeset);
+		intel_atomic_commit_tail(state);
+	}
+
+	return 0;
+}
+
+/**
+ * intel_plane_destroy - destroy a plane
+ * @plane: plane to destroy
+ *
+ * Common destruction function for all types of planes (primary, cursor,
+ * sprite).
+ */
+void intel_plane_destroy(struct drm_plane *plane)
+{
+	drm_plane_cleanup(plane);
+	kfree(to_intel_plane(plane));
+}
+
+static void intel_plane_possible_crtcs_init(struct drm_i915_private *dev_priv)
+{
+	struct intel_plane *plane;
+
+	for_each_intel_plane(&dev_priv->drm, plane) {
+		struct intel_crtc *crtc = intel_crtc_for_pipe(dev_priv,
+							      plane->pipe);
+
+		plane->base.possible_crtcs = drm_crtc_mask(&crtc->base);
+	}
+}
+
+
+int intel_get_pipe_from_crtc_id_ioctl(struct drm_device *dev, void *data,
+				      struct drm_file *file)
+{
+	struct drm_i915_get_pipe_from_crtc_id *pipe_from_crtc_id = data;
+	struct drm_crtc *drmmode_crtc;
+	struct intel_crtc *crtc;
+
+	drmmode_crtc = drm_crtc_find(dev, file, pipe_from_crtc_id->crtc_id);
+	if (!drmmode_crtc)
+		return -ENOENT;
+
+	crtc = to_intel_crtc(drmmode_crtc);
+	pipe_from_crtc_id->pipe = crtc->pipe;
+
+	return 0;
+}
+
+static u32 intel_encoder_possible_clones(struct intel_encoder *encoder)
+{
+	struct drm_device *dev = encoder->base.dev;
+	struct intel_encoder *source_encoder;
+	u32 possible_clones = 0;
+
+	for_each_intel_encoder(dev, source_encoder) {
+		if (encoders_cloneable(encoder, source_encoder))
+			possible_clones |= drm_encoder_mask(&source_encoder->base);
+	}
+
+	return possible_clones;
+}
+
+static u32 intel_encoder_possible_crtcs(struct intel_encoder *encoder)
+{
+	struct drm_device *dev = encoder->base.dev;
+	struct intel_crtc *crtc;
+	u32 possible_crtcs = 0;
+
+	for_each_intel_crtc_in_pipe_mask(dev, crtc, encoder->pipe_mask)
+		possible_crtcs |= drm_crtc_mask(&crtc->base);
+
+	return possible_crtcs;
+}
+
+static bool ilk_has_edp_a(struct drm_i915_private *dev_priv)
+{
+	if (!IS_MOBILE(dev_priv))
+		return false;
+
+	if ((intel_de_read(dev_priv, DP_A) & DP_DETECTED) == 0)
+		return false;
+
+	if (IS_IRONLAKE(dev_priv) && (intel_de_read(dev_priv, FUSE_STRAP) & ILK_eDP_A_DISABLE))
+		return false;
+
+	return true;
+}
+
+static bool intel_ddi_crt_present(struct drm_i915_private *dev_priv)
+{
+	if (DISPLAY_VER(dev_priv) >= 9)
+		return false;
+
+	if (IS_HSW_ULT(dev_priv) || IS_BDW_ULT(dev_priv))
+		return false;
+
+	if (HAS_PCH_LPT_H(dev_priv) &&
+	    intel_de_read(dev_priv, SFUSE_STRAP) & SFUSE_STRAP_CRT_DISABLED)
+		return false;
+
+	/* DDI E can't be used if DDI A requires 4 lanes */
+	if (intel_de_read(dev_priv, DDI_BUF_CTL(PORT_A)) & DDI_A_4_LANES)
+		return false;
+
+	if (!dev_priv->display.vbt.int_crt_support)
+		return false;
+
+	return true;
+}
+
+static void intel_setup_outputs(struct drm_i915_private *dev_priv)
+{
+	struct intel_encoder *encoder;
+	bool dpd_is_edp = false;
+
+	intel_pps_unlock_regs_wa(dev_priv);
+
+	if (!HAS_DISPLAY(dev_priv))
+		return;
+
+	if (IS_DG2(dev_priv)) {
+		intel_ddi_init(dev_priv, PORT_A);
+		intel_ddi_init(dev_priv, PORT_B);
+		intel_ddi_init(dev_priv, PORT_C);
+		intel_ddi_init(dev_priv, PORT_D_XELPD);
+		intel_ddi_init(dev_priv, PORT_TC1);
+	} else if (IS_ALDERLAKE_P(dev_priv)) {
+		intel_ddi_init(dev_priv, PORT_A);
+		intel_ddi_init(dev_priv, PORT_B);
+		intel_ddi_init(dev_priv, PORT_TC1);
+		intel_ddi_init(dev_priv, PORT_TC2);
+		intel_ddi_init(dev_priv, PORT_TC3);
+		intel_ddi_init(dev_priv, PORT_TC4);
+		icl_dsi_init(dev_priv);
+	} else if (IS_ALDERLAKE_S(dev_priv)) {
+		intel_ddi_init(dev_priv, PORT_A);
+		intel_ddi_init(dev_priv, PORT_TC1);
+		intel_ddi_init(dev_priv, PORT_TC2);
+		intel_ddi_init(dev_priv, PORT_TC3);
+		intel_ddi_init(dev_priv, PORT_TC4);
+	} else if (IS_DG1(dev_priv) || IS_ROCKETLAKE(dev_priv)) {
+		intel_ddi_init(dev_priv, PORT_A);
+		intel_ddi_init(dev_priv, PORT_B);
+		intel_ddi_init(dev_priv, PORT_TC1);
+		intel_ddi_init(dev_priv, PORT_TC2);
+	} else if (DISPLAY_VER(dev_priv) >= 12) {
+		intel_ddi_init(dev_priv, PORT_A);
+		intel_ddi_init(dev_priv, PORT_B);
+		intel_ddi_init(dev_priv, PORT_TC1);
+		intel_ddi_init(dev_priv, PORT_TC2);
+		intel_ddi_init(dev_priv, PORT_TC3);
+		intel_ddi_init(dev_priv, PORT_TC4);
+		intel_ddi_init(dev_priv, PORT_TC5);
+		intel_ddi_init(dev_priv, PORT_TC6);
+		icl_dsi_init(dev_priv);
+	} else if (IS_JSL_EHL(dev_priv)) {
+		intel_ddi_init(dev_priv, PORT_A);
+		intel_ddi_init(dev_priv, PORT_B);
+		intel_ddi_init(dev_priv, PORT_C);
+		intel_ddi_init(dev_priv, PORT_D);
+		icl_dsi_init(dev_priv);
+	} else if (DISPLAY_VER(dev_priv) == 11) {
+		intel_ddi_init(dev_priv, PORT_A);
+		intel_ddi_init(dev_priv, PORT_B);
+		intel_ddi_init(dev_priv, PORT_C);
+		intel_ddi_init(dev_priv, PORT_D);
+		intel_ddi_init(dev_priv, PORT_E);
+		intel_ddi_init(dev_priv, PORT_F);
+		icl_dsi_init(dev_priv);
+	} else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) {
+		intel_ddi_init(dev_priv, PORT_A);
+		intel_ddi_init(dev_priv, PORT_B);
+		intel_ddi_init(dev_priv, PORT_C);
+		vlv_dsi_init(dev_priv);
+	} else if (DISPLAY_VER(dev_priv) >= 9) {
+		intel_ddi_init(dev_priv, PORT_A);
+		intel_ddi_init(dev_priv, PORT_B);
+		intel_ddi_init(dev_priv, PORT_C);
+		intel_ddi_init(dev_priv, PORT_D);
+		intel_ddi_init(dev_priv, PORT_E);
+	} else if (HAS_DDI(dev_priv)) {
+		u32 found;
+
+		if (intel_ddi_crt_present(dev_priv))
+			intel_crt_init(dev_priv);
+
+		/* Haswell uses DDI functions to detect digital outputs. */
+		found = intel_de_read(dev_priv, DDI_BUF_CTL(PORT_A)) & DDI_INIT_DISPLAY_DETECTED;
+		if (found)
+			intel_ddi_init(dev_priv, PORT_A);
+
+		found = intel_de_read(dev_priv, SFUSE_STRAP);
+		if (found & SFUSE_STRAP_DDIB_DETECTED)
+			intel_ddi_init(dev_priv, PORT_B);
+		if (found & SFUSE_STRAP_DDIC_DETECTED)
+			intel_ddi_init(dev_priv, PORT_C);
+		if (found & SFUSE_STRAP_DDID_DETECTED)
+			intel_ddi_init(dev_priv, PORT_D);
+		if (found & SFUSE_STRAP_DDIF_DETECTED)
+			intel_ddi_init(dev_priv, PORT_F);
+	} else if (HAS_PCH_SPLIT(dev_priv)) {
+		int found;
+
+		/*
+		 * intel_edp_init_connector() depends on this completing first,
+		 * to prevent the registration of both eDP and LVDS and the
+		 * incorrect sharing of the PPS.
+		 */
+		intel_lvds_init(dev_priv);
+		intel_crt_init(dev_priv);
+
+		dpd_is_edp = intel_dp_is_port_edp(dev_priv, PORT_D);
+
+		if (ilk_has_edp_a(dev_priv))
+			g4x_dp_init(dev_priv, DP_A, PORT_A);
+
+		if (intel_de_read(dev_priv, PCH_HDMIB) & SDVO_DETECTED) {
+			/* PCH SDVOB multiplex with HDMIB */
+			found = intel_sdvo_init(dev_priv, PCH_SDVOB, PORT_B);
+			if (!found)
+				g4x_hdmi_init(dev_priv, PCH_HDMIB, PORT_B);
+			if (!found && (intel_de_read(dev_priv, PCH_DP_B) & DP_DETECTED))
+				g4x_dp_init(dev_priv, PCH_DP_B, PORT_B);
+		}
+
+		if (intel_de_read(dev_priv, PCH_HDMIC) & SDVO_DETECTED)
+			g4x_hdmi_init(dev_priv, PCH_HDMIC, PORT_C);
+
+		if (!dpd_is_edp && intel_de_read(dev_priv, PCH_HDMID) & SDVO_DETECTED)
+			g4x_hdmi_init(dev_priv, PCH_HDMID, PORT_D);
+
+		if (intel_de_read(dev_priv, PCH_DP_C) & DP_DETECTED)
+			g4x_dp_init(dev_priv, PCH_DP_C, PORT_C);
+
+		if (intel_de_read(dev_priv, PCH_DP_D) & DP_DETECTED)
+			g4x_dp_init(dev_priv, PCH_DP_D, PORT_D);
+	} else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+		bool has_edp, has_port;
+
+		if (IS_VALLEYVIEW(dev_priv) && dev_priv->display.vbt.int_crt_support)
+			intel_crt_init(dev_priv);
+
+		/*
+		 * The DP_DETECTED bit is the latched state of the DDC
+		 * SDA pin at boot. However since eDP doesn't require DDC
+		 * (no way to plug in a DP->HDMI dongle) the DDC pins for
+		 * eDP ports may have been muxed to an alternate function.
+		 * Thus we can't rely on the DP_DETECTED bit alone to detect
+		 * eDP ports. Consult the VBT as well as DP_DETECTED to
+		 * detect eDP ports.
+		 *
+		 * Sadly the straps seem to be missing sometimes even for HDMI
+		 * ports (eg. on Voyo V3 - CHT x7-Z8700), so check both strap
+		 * and VBT for the presence of the port. Additionally we can't
+		 * trust the port type the VBT declares as we've seen at least
+		 * HDMI ports that the VBT claim are DP or eDP.
+		 */
+		has_edp = intel_dp_is_port_edp(dev_priv, PORT_B);
+		has_port = intel_bios_is_port_present(dev_priv, PORT_B);
+		if (intel_de_read(dev_priv, VLV_DP_B) & DP_DETECTED || has_port)
+			has_edp &= g4x_dp_init(dev_priv, VLV_DP_B, PORT_B);
+		if ((intel_de_read(dev_priv, VLV_HDMIB) & SDVO_DETECTED || has_port) && !has_edp)
+			g4x_hdmi_init(dev_priv, VLV_HDMIB, PORT_B);
+
+		has_edp = intel_dp_is_port_edp(dev_priv, PORT_C);
+		has_port = intel_bios_is_port_present(dev_priv, PORT_C);
+		if (intel_de_read(dev_priv, VLV_DP_C) & DP_DETECTED || has_port)
+			has_edp &= g4x_dp_init(dev_priv, VLV_DP_C, PORT_C);
+		if ((intel_de_read(dev_priv, VLV_HDMIC) & SDVO_DETECTED || has_port) && !has_edp)
+			g4x_hdmi_init(dev_priv, VLV_HDMIC, PORT_C);
+
+		if (IS_CHERRYVIEW(dev_priv)) {
+			/*
+			 * eDP not supported on port D,
+			 * so no need to worry about it
+			 */
+			has_port = intel_bios_is_port_present(dev_priv, PORT_D);
+			if (intel_de_read(dev_priv, CHV_DP_D) & DP_DETECTED || has_port)
+				g4x_dp_init(dev_priv, CHV_DP_D, PORT_D);
+			if (intel_de_read(dev_priv, CHV_HDMID) & SDVO_DETECTED || has_port)
+				g4x_hdmi_init(dev_priv, CHV_HDMID, PORT_D);
+		}
+
+		vlv_dsi_init(dev_priv);
+	} else if (IS_PINEVIEW(dev_priv)) {
+		intel_lvds_init(dev_priv);
+		intel_crt_init(dev_priv);
+	} else if (IS_DISPLAY_VER(dev_priv, 3, 4)) {
+		bool found = false;
+
+		if (IS_MOBILE(dev_priv))
+			intel_lvds_init(dev_priv);
+
+		intel_crt_init(dev_priv);
+
+		if (intel_de_read(dev_priv, GEN3_SDVOB) & SDVO_DETECTED) {
+			drm_dbg_kms(&dev_priv->drm, "probing SDVOB\n");
+			found = intel_sdvo_init(dev_priv, GEN3_SDVOB, PORT_B);
+			if (!found && IS_G4X(dev_priv)) {
+				drm_dbg_kms(&dev_priv->drm,
+					    "probing HDMI on SDVOB\n");
+				g4x_hdmi_init(dev_priv, GEN4_HDMIB, PORT_B);
+			}
+
+			if (!found && IS_G4X(dev_priv))
+				g4x_dp_init(dev_priv, DP_B, PORT_B);
+		}
+
+		/* Before G4X SDVOC doesn't have its own detect register */
+
+		if (intel_de_read(dev_priv, GEN3_SDVOB) & SDVO_DETECTED) {
+			drm_dbg_kms(&dev_priv->drm, "probing SDVOC\n");
+			found = intel_sdvo_init(dev_priv, GEN3_SDVOC, PORT_C);
+		}
+
+		if (!found && (intel_de_read(dev_priv, GEN3_SDVOC) & SDVO_DETECTED)) {
+
+			if (IS_G4X(dev_priv)) {
+				drm_dbg_kms(&dev_priv->drm,
+					    "probing HDMI on SDVOC\n");
+				g4x_hdmi_init(dev_priv, GEN4_HDMIC, PORT_C);
+			}
+			if (IS_G4X(dev_priv))
+				g4x_dp_init(dev_priv, DP_C, PORT_C);
+		}
+
+		if (IS_G4X(dev_priv) && (intel_de_read(dev_priv, DP_D) & DP_DETECTED))
+			g4x_dp_init(dev_priv, DP_D, PORT_D);
+
+		if (SUPPORTS_TV(dev_priv))
+			intel_tv_init(dev_priv);
+	} else if (DISPLAY_VER(dev_priv) == 2) {
+		if (IS_I85X(dev_priv))
+			intel_lvds_init(dev_priv);
+
+		intel_crt_init(dev_priv);
+		intel_dvo_init(dev_priv);
+	}
+
+	for_each_intel_encoder(&dev_priv->drm, encoder) {
+		encoder->base.possible_crtcs =
+			intel_encoder_possible_crtcs(encoder);
+		encoder->base.possible_clones =
+			intel_encoder_possible_clones(encoder);
+	}
+
+	intel_init_pch_refclk(dev_priv);
+
+	drm_helper_move_panel_connectors_to_head(&dev_priv->drm);
+}
+
+static int max_dotclock(struct drm_i915_private *i915)
+{
+	int max_dotclock = i915->max_dotclk_freq;
+
+	/* icl+ might use bigjoiner */
+	if (DISPLAY_VER(i915) >= 11)
+		max_dotclock *= 2;
+
+	return max_dotclock;
+}
+
+static enum drm_mode_status
+intel_mode_valid(struct drm_device *dev,
+		 const struct drm_display_mode *mode)
+{
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	int hdisplay_max, htotal_max;
+	int vdisplay_max, vtotal_max;
+
+	/*
+	 * Can't reject DBLSCAN here because Xorg ddxen can add piles
+	 * of DBLSCAN modes to the output's mode list when they detect
+	 * the scaling mode property on the connector. And they don't
+	 * ask the kernel to validate those modes in any way until
+	 * modeset time at which point the client gets a protocol error.
+	 * So in order to not upset those clients we silently ignore the
+	 * DBLSCAN flag on such connectors. For other connectors we will
+	 * reject modes with the DBLSCAN flag in encoder->compute_config().
+	 * And we always reject DBLSCAN modes in connector->mode_valid()
+	 * as we never want such modes on the connector's mode list.
+	 */
+
+	if (mode->vscan > 1)
+		return MODE_NO_VSCAN;
+
+	if (mode->flags & DRM_MODE_FLAG_HSKEW)
+		return MODE_H_ILLEGAL;
+
+	if (mode->flags & (DRM_MODE_FLAG_CSYNC |
+			   DRM_MODE_FLAG_NCSYNC |
+			   DRM_MODE_FLAG_PCSYNC))
+		return MODE_HSYNC;
+
+	if (mode->flags & (DRM_MODE_FLAG_BCAST |
+			   DRM_MODE_FLAG_PIXMUX |
+			   DRM_MODE_FLAG_CLKDIV2))
+		return MODE_BAD;
+
+	/*
+	 * Reject clearly excessive dotclocks early to
+	 * avoid having to worry about huge integers later.
+	 */
+	if (mode->clock > max_dotclock(dev_priv))
+		return MODE_CLOCK_HIGH;
+
+	/* Transcoder timing limits */
+	if (DISPLAY_VER(dev_priv) >= 11) {
+		hdisplay_max = 16384;
+		vdisplay_max = 8192;
+		htotal_max = 16384;
+		vtotal_max = 8192;
+	} else if (DISPLAY_VER(dev_priv) >= 9 ||
+		   IS_BROADWELL(dev_priv) || IS_HASWELL(dev_priv)) {
+		hdisplay_max = 8192; /* FDI max 4096 handled elsewhere */
+		vdisplay_max = 4096;
+		htotal_max = 8192;
+		vtotal_max = 8192;
+	} else if (DISPLAY_VER(dev_priv) >= 3) {
+		hdisplay_max = 4096;
+		vdisplay_max = 4096;
+		htotal_max = 8192;
+		vtotal_max = 8192;
+	} else {
+		hdisplay_max = 2048;
+		vdisplay_max = 2048;
+		htotal_max = 4096;
+		vtotal_max = 4096;
+	}
+
+	if (mode->hdisplay > hdisplay_max ||
+	    mode->hsync_start > htotal_max ||
+	    mode->hsync_end > htotal_max ||
+	    mode->htotal > htotal_max)
+		return MODE_H_ILLEGAL;
+
+	if (mode->vdisplay > vdisplay_max ||
+	    mode->vsync_start > vtotal_max ||
+	    mode->vsync_end > vtotal_max ||
+	    mode->vtotal > vtotal_max)
+		return MODE_V_ILLEGAL;
+
+	return MODE_OK;
+}
+
+enum drm_mode_status intel_cpu_transcoder_mode_valid(struct drm_i915_private *dev_priv,
+						     const struct drm_display_mode *mode)
+{
+	/*
+	 * Additional transcoder timing limits,
+	 * excluding BXT/GLK DSI transcoders.
+	 */
+	if (DISPLAY_VER(dev_priv) >= 5) {
+		if (mode->hdisplay < 64 ||
+		    mode->htotal - mode->hdisplay < 32)
+			return MODE_H_ILLEGAL;
+
+		if (mode->vtotal - mode->vdisplay < 5)
+			return MODE_V_ILLEGAL;
+	} else {
+		if (mode->htotal - mode->hdisplay < 32)
+			return MODE_H_ILLEGAL;
+
+		if (mode->vtotal - mode->vdisplay < 3)
+			return MODE_V_ILLEGAL;
+	}
+
+	/*
+	 * Cantiga+ cannot handle modes with a hsync front porch of 0.
+	 * WaPruneModeWithIncorrectHsyncOffset:ctg,elk,ilk,snb,ivb,vlv,hsw.
+	 */
+	if ((DISPLAY_VER(dev_priv) > 4 || IS_G4X(dev_priv)) &&
+	    mode->hsync_start == mode->hdisplay)
+		return MODE_H_ILLEGAL;
+
+	return MODE_OK;
+}
+
+enum drm_mode_status
+intel_mode_valid_max_plane_size(struct drm_i915_private *dev_priv,
+				const struct drm_display_mode *mode,
+				bool bigjoiner)
+{
+	int plane_width_max, plane_height_max;
+
+	/*
+	 * intel_mode_valid() should be
+	 * sufficient on older platforms.
+	 */
+	if (DISPLAY_VER(dev_priv) < 9)
+		return MODE_OK;
+
+	/*
+	 * Most people will probably want a fullscreen
+	 * plane so let's not advertize modes that are
+	 * too big for that.
+	 */
+	if (DISPLAY_VER(dev_priv) >= 11) {
+		plane_width_max = 5120 << bigjoiner;
+		plane_height_max = 4320;
+	} else {
+		plane_width_max = 5120;
+		plane_height_max = 4096;
+	}
+
+	if (mode->hdisplay > plane_width_max)
+		return MODE_H_ILLEGAL;
+
+	if (mode->vdisplay > plane_height_max)
+		return MODE_V_ILLEGAL;
+
+	return MODE_OK;
+}
+
+static const struct drm_mode_config_funcs intel_mode_funcs = {
+	.fb_create = intel_user_framebuffer_create,
+	.get_format_info = intel_fb_get_format_info,
+	.output_poll_changed = intel_fbdev_output_poll_changed,
+	.mode_valid = intel_mode_valid,
+	.atomic_check = intel_atomic_check,
+	.atomic_commit = intel_atomic_commit,
+	.atomic_state_alloc = intel_atomic_state_alloc,
+	.atomic_state_clear = intel_atomic_state_clear,
+	.atomic_state_free = intel_atomic_state_free,
+};
+
+static const struct intel_display_funcs skl_display_funcs = {
+	.get_pipe_config = hsw_get_pipe_config,
+	.crtc_enable = hsw_crtc_enable,
+	.crtc_disable = hsw_crtc_disable,
+	.commit_modeset_enables = skl_commit_modeset_enables,
+	.get_initial_plane_config = skl_get_initial_plane_config,
+};
+
+static const struct intel_display_funcs ddi_display_funcs = {
+	.get_pipe_config = hsw_get_pipe_config,
+	.crtc_enable = hsw_crtc_enable,
+	.crtc_disable = hsw_crtc_disable,
+	.commit_modeset_enables = intel_commit_modeset_enables,
+	.get_initial_plane_config = i9xx_get_initial_plane_config,
+};
+
+static const struct intel_display_funcs pch_split_display_funcs = {
+	.get_pipe_config = ilk_get_pipe_config,
+	.crtc_enable = ilk_crtc_enable,
+	.crtc_disable = ilk_crtc_disable,
+	.commit_modeset_enables = intel_commit_modeset_enables,
+	.get_initial_plane_config = i9xx_get_initial_plane_config,
+};
+
+static const struct intel_display_funcs vlv_display_funcs = {
+	.get_pipe_config = i9xx_get_pipe_config,
+	.crtc_enable = valleyview_crtc_enable,
+	.crtc_disable = i9xx_crtc_disable,
+	.commit_modeset_enables = intel_commit_modeset_enables,
+	.get_initial_plane_config = i9xx_get_initial_plane_config,
+};
+
+static const struct intel_display_funcs i9xx_display_funcs = {
+	.get_pipe_config = i9xx_get_pipe_config,
+	.crtc_enable = i9xx_crtc_enable,
+	.crtc_disable = i9xx_crtc_disable,
+	.commit_modeset_enables = intel_commit_modeset_enables,
+	.get_initial_plane_config = i9xx_get_initial_plane_config,
+};
+
+/**
+ * intel_init_display_hooks - initialize the display modesetting hooks
+ * @dev_priv: device private
+ */
+void intel_init_display_hooks(struct drm_i915_private *dev_priv)
+{
+	if (!HAS_DISPLAY(dev_priv))
+		return;
+
+	intel_init_cdclk_hooks(dev_priv);
+	intel_audio_hooks_init(dev_priv);
+
+	intel_dpll_init_clock_hook(dev_priv);
+
+	if (DISPLAY_VER(dev_priv) >= 9) {
+		dev_priv->display.funcs.display = &skl_display_funcs;
+	} else if (HAS_DDI(dev_priv)) {
+		dev_priv->display.funcs.display = &ddi_display_funcs;
+	} else if (HAS_PCH_SPLIT(dev_priv)) {
+		dev_priv->display.funcs.display = &pch_split_display_funcs;
+	} else if (IS_CHERRYVIEW(dev_priv) ||
+		   IS_VALLEYVIEW(dev_priv)) {
+		dev_priv->display.funcs.display = &vlv_display_funcs;
+	} else {
+		dev_priv->display.funcs.display = &i9xx_display_funcs;
+	}
+
+	intel_fdi_init_hook(dev_priv);
+}
+
+void intel_modeset_init_hw(struct drm_i915_private *i915)
+{
+	struct intel_cdclk_state *cdclk_state;
+
+	if (!HAS_DISPLAY(i915))
+		return;
+
+	cdclk_state = to_intel_cdclk_state(i915->display.cdclk.obj.state);
+
+	intel_update_cdclk(i915);
+	intel_cdclk_dump_config(i915, &i915->display.cdclk.hw, "Current CDCLK");
+	cdclk_state->logical = cdclk_state->actual = i915->display.cdclk.hw;
+}
+
+static int sanitize_watermarks_add_affected(struct drm_atomic_state *state)
+{
+	struct drm_plane *plane;
+	struct intel_crtc *crtc;
+
+	for_each_intel_crtc(state->dev, crtc) {
+		struct intel_crtc_state *crtc_state;
+
+		crtc_state = intel_atomic_get_crtc_state(state, crtc);
+		if (IS_ERR(crtc_state))
+			return PTR_ERR(crtc_state);
+
+		if (crtc_state->hw.active) {
+			/*
+			 * Preserve the inherited flag to avoid
+			 * taking the full modeset path.
+			 */
+			crtc_state->inherited = true;
+		}
+	}
+
+	drm_for_each_plane(plane, state->dev) {
+		struct drm_plane_state *plane_state;
+
+		plane_state = drm_atomic_get_plane_state(state, plane);
+		if (IS_ERR(plane_state))
+			return PTR_ERR(plane_state);
+	}
+
+	return 0;
+}
+
+/*
+ * Calculate what we think the watermarks should be for the state we've read
+ * out of the hardware and then immediately program those watermarks so that
+ * we ensure the hardware settings match our internal state.
+ *
+ * We can calculate what we think WM's should be by creating a duplicate of the
+ * current state (which was constructed during hardware readout) and running it
+ * through the atomic check code to calculate new watermark values in the
+ * state object.
+ */
+static void sanitize_watermarks(struct drm_i915_private *dev_priv)
+{
+	struct drm_atomic_state *state;
+	struct intel_atomic_state *intel_state;
+	struct intel_crtc *crtc;
+	struct intel_crtc_state *crtc_state;
+	struct drm_modeset_acquire_ctx ctx;
+	int ret;
+	int i;
+
+	/* Only supported on platforms that use atomic watermark design */
+	if (!dev_priv->display.funcs.wm->optimize_watermarks)
+		return;
+
+	state = drm_atomic_state_alloc(&dev_priv->drm);
+	if (drm_WARN_ON(&dev_priv->drm, !state))
+		return;
+
+	intel_state = to_intel_atomic_state(state);
+
+	drm_modeset_acquire_init(&ctx, 0);
+
+retry:
+	state->acquire_ctx = &ctx;
+
+	/*
+	 * Hardware readout is the only time we don't want to calculate
+	 * intermediate watermarks (since we don't trust the current
+	 * watermarks).
+	 */
+	if (!HAS_GMCH(dev_priv))
+		intel_state->skip_intermediate_wm = true;
+
+	ret = sanitize_watermarks_add_affected(state);
+	if (ret)
+		goto fail;
+
+	ret = intel_atomic_check(&dev_priv->drm, state);
+	if (ret)
+		goto fail;
+
+	/* Write calculated watermark values back */
+	for_each_new_intel_crtc_in_state(intel_state, crtc, crtc_state, i) {
+		crtc_state->wm.need_postvbl_update = true;
+		intel_optimize_watermarks(intel_state, crtc);
+
+		to_intel_crtc_state(crtc->base.state)->wm = crtc_state->wm;
+	}
+
+fail:
+	if (ret == -EDEADLK) {
+		drm_atomic_state_clear(state);
+		drm_modeset_backoff(&ctx);
+		goto retry;
+	}
+
+	/*
+	 * If we fail here, it means that the hardware appears to be
+	 * programmed in a way that shouldn't be possible, given our
+	 * understanding of watermark requirements.  This might mean a
+	 * mistake in the hardware readout code or a mistake in the
+	 * watermark calculations for a given platform.  Raise a WARN
+	 * so that this is noticeable.
+	 *
+	 * If this actually happens, we'll have to just leave the
+	 * BIOS-programmed watermarks untouched and hope for the best.
+	 */
+	drm_WARN(&dev_priv->drm, ret,
+		 "Could not determine valid watermarks for inherited state\n");
+
+	drm_atomic_state_put(state);
+
+	drm_modeset_drop_locks(&ctx);
+	drm_modeset_acquire_fini(&ctx);
+}
+
+static int intel_initial_commit(struct drm_device *dev)
+{
+	struct drm_atomic_state *state = NULL;
+	struct drm_modeset_acquire_ctx ctx;
+	struct intel_crtc *crtc;
+	int ret = 0;
+
+	state = drm_atomic_state_alloc(dev);
+	if (!state)
+		return -ENOMEM;
+
+	drm_modeset_acquire_init(&ctx, 0);
+
+retry:
+	state->acquire_ctx = &ctx;
+
+	for_each_intel_crtc(dev, crtc) {
+		struct intel_crtc_state *crtc_state =
+			intel_atomic_get_crtc_state(state, crtc);
+
+		if (IS_ERR(crtc_state)) {
+			ret = PTR_ERR(crtc_state);
+			goto out;
+		}
+
+		if (crtc_state->hw.active) {
+			struct intel_encoder *encoder;
+
+			/*
+			 * We've not yet detected sink capabilities
+			 * (audio,infoframes,etc.) and thus we don't want to
+			 * force a full state recomputation yet. We want that to
+			 * happen only for the first real commit from userspace.
+			 * So preserve the inherited flag for the time being.
+			 */
+			crtc_state->inherited = true;
+
+			ret = drm_atomic_add_affected_planes(state, &crtc->base);
+			if (ret)
+				goto out;
+
+			/*
+			 * FIXME hack to force a LUT update to avoid the
+			 * plane update forcing the pipe gamma on without
+			 * having a proper LUT loaded. Remove once we
+			 * have readout for pipe gamma enable.
+			 */
+			crtc_state->uapi.color_mgmt_changed = true;
+
+			for_each_intel_encoder_mask(dev, encoder,
+						    crtc_state->uapi.encoder_mask) {
+				if (encoder->initial_fastset_check &&
+				    !encoder->initial_fastset_check(encoder, crtc_state)) {
+					ret = drm_atomic_add_affected_connectors(state,
+										 &crtc->base);
+					if (ret)
+						goto out;
+				}
+			}
+		}
+	}
+
+	ret = drm_atomic_commit(state);
+
+out:
+	if (ret == -EDEADLK) {
+		drm_atomic_state_clear(state);
+		drm_modeset_backoff(&ctx);
+		goto retry;
+	}
+
+	drm_atomic_state_put(state);
+
+	drm_modeset_drop_locks(&ctx);
+	drm_modeset_acquire_fini(&ctx);
+
+	return ret;
+}
+
+static const struct drm_mode_config_helper_funcs intel_mode_config_funcs = {
+	.atomic_commit_setup = drm_dp_mst_atomic_setup_commit,
+};
+
+static void intel_mode_config_init(struct drm_i915_private *i915)
+{
+	struct drm_mode_config *mode_config = &i915->drm.mode_config;
+
+	drm_mode_config_init(&i915->drm);
+	INIT_LIST_HEAD(&i915->global_obj_list);
+
+	mode_config->min_width = 0;
+	mode_config->min_height = 0;
+
+	mode_config->preferred_depth = 24;
+	mode_config->prefer_shadow = 1;
+
+	mode_config->funcs = &intel_mode_funcs;
+	mode_config->helper_private = &intel_mode_config_funcs;
+
+	mode_config->async_page_flip = HAS_ASYNC_FLIPS(i915);
+
+	/*
+	 * Maximum framebuffer dimensions, chosen to match
+	 * the maximum render engine surface size on gen4+.
+	 */
+	if (DISPLAY_VER(i915) >= 7) {
+		mode_config->max_width = 16384;
+		mode_config->max_height = 16384;
+	} else if (DISPLAY_VER(i915) >= 4) {
+		mode_config->max_width = 8192;
+		mode_config->max_height = 8192;
+	} else if (DISPLAY_VER(i915) == 3) {
+		mode_config->max_width = 4096;
+		mode_config->max_height = 4096;
+	} else {
+		mode_config->max_width = 2048;
+		mode_config->max_height = 2048;
+	}
+
+	if (IS_I845G(i915) || IS_I865G(i915)) {
+		mode_config->cursor_width = IS_I845G(i915) ? 64 : 512;
+		mode_config->cursor_height = 1023;
+	} else if (IS_I830(i915) || IS_I85X(i915) ||
+		   IS_I915G(i915) || IS_I915GM(i915)) {
+		mode_config->cursor_width = 64;
+		mode_config->cursor_height = 64;
+	} else {
+		mode_config->cursor_width = 256;
+		mode_config->cursor_height = 256;
+	}
+}
+
+static void intel_mode_config_cleanup(struct drm_i915_private *i915)
+{
+	intel_atomic_global_obj_cleanup(i915);
+	drm_mode_config_cleanup(&i915->drm);
+}
+
+/* part #1: call before irq install */
+int intel_modeset_init_noirq(struct drm_i915_private *i915)
+{
+	int ret;
+
+	if (i915_inject_probe_failure(i915))
+		return -ENODEV;
+
+	if (HAS_DISPLAY(i915)) {
+		ret = drm_vblank_init(&i915->drm,
+				      INTEL_NUM_PIPES(i915));
+		if (ret)
+			return ret;
+	}
+
+	intel_bios_init(i915);
+
+	ret = intel_vga_register(i915);
+	if (ret)
+		goto cleanup_bios;
+
+	/* FIXME: completely on the wrong abstraction layer */
+	intel_power_domains_init_hw(i915, false);
+
+	if (!HAS_DISPLAY(i915))
+		return 0;
+
+	intel_dmc_ucode_init(i915);
+
+	i915->display.wq.modeset = alloc_ordered_workqueue("i915_modeset", 0);
+	i915->display.wq.flip = alloc_workqueue("i915_flip", WQ_HIGHPRI |
+						WQ_UNBOUND, WQ_UNBOUND_MAX_ACTIVE);
+
+	intel_mode_config_init(i915);
+
+	ret = intel_cdclk_init(i915);
+	if (ret)
+		goto cleanup_vga_client_pw_domain_dmc;
+
+	ret = intel_dbuf_init(i915);
+	if (ret)
+		goto cleanup_vga_client_pw_domain_dmc;
+
+	ret = intel_bw_init(i915);
+	if (ret)
+		goto cleanup_vga_client_pw_domain_dmc;
+
+	init_llist_head(&i915->display.atomic_helper.free_list);
+	INIT_WORK(&i915->display.atomic_helper.free_work,
+		  intel_atomic_helper_free_state_worker);
+
+	intel_init_quirks(i915);
+
+	intel_fbc_init(i915);
+
+	return 0;
+
+cleanup_vga_client_pw_domain_dmc:
+	intel_dmc_ucode_fini(i915);
+	intel_power_domains_driver_remove(i915);
+	intel_vga_unregister(i915);
+cleanup_bios:
+	intel_bios_driver_remove(i915);
+
+	return ret;
+}
+
+/* part #2: call after irq install, but before gem init */
+int intel_modeset_init_nogem(struct drm_i915_private *i915)
+{
+	struct drm_device *dev = &i915->drm;
+	enum pipe pipe;
+	struct intel_crtc *crtc;
+	int ret;
+
+	if (!HAS_DISPLAY(i915))
+		return 0;
+
+	intel_init_pm(i915);
+
+	intel_panel_sanitize_ssc(i915);
+
+	intel_pps_setup(i915);
+
+	intel_gmbus_setup(i915);
+
+	drm_dbg_kms(&i915->drm, "%d display pipe%s available.\n",
+		    INTEL_NUM_PIPES(i915),
+		    INTEL_NUM_PIPES(i915) > 1 ? "s" : "");
+
+	for_each_pipe(i915, pipe) {
+		ret = intel_crtc_init(i915, pipe);
+		if (ret) {
+			intel_mode_config_cleanup(i915);
+			return ret;
+		}
+	}
+
+	intel_plane_possible_crtcs_init(i915);
+	intel_shared_dpll_init(i915);
+	intel_fdi_pll_freq_update(i915);
+
+	intel_update_czclk(i915);
+	intel_modeset_init_hw(i915);
+	intel_dpll_update_ref_clks(i915);
+
+	intel_hdcp_component_init(i915);
+
+	if (i915->display.cdclk.max_cdclk_freq == 0)
+		intel_update_max_cdclk(i915);
+
+	/*
+	 * If the platform has HTI, we need to find out whether it has reserved
+	 * any display resources before we create our display outputs.
+	 */
+	if (INTEL_INFO(i915)->display.has_hti)
+		i915->hti_state = intel_de_read(i915, HDPORT_STATE);
+
+	/* Just disable it once at startup */
+	intel_vga_disable(i915);
+	intel_setup_outputs(i915);
+
+	drm_modeset_lock_all(dev);
+	intel_modeset_setup_hw_state(i915, dev->mode_config.acquire_ctx);
+	intel_acpi_assign_connector_fwnodes(i915);
+	drm_modeset_unlock_all(dev);
+
+	for_each_intel_crtc(dev, crtc) {
+		if (!to_intel_crtc_state(crtc->base.state)->uapi.active)
+			continue;
+		intel_crtc_initial_plane_config(crtc);
+	}
+
+	/*
+	 * Make sure hardware watermarks really match the state we read out.
+	 * Note that we need to do this after reconstructing the BIOS fb's
+	 * since the watermark calculation done here will use pstate->fb.
+	 */
+	if (!HAS_GMCH(i915))
+		sanitize_watermarks(i915);
+
+	return 0;
+}
+
+/* part #3: call after gem init */
+int intel_modeset_init(struct drm_i915_private *i915)
+{
+	int ret;
+
+	if (!HAS_DISPLAY(i915))
+		return 0;
+
+	/*
+	 * Force all active planes to recompute their states. So that on
+	 * mode_setcrtc after probe, all the intel_plane_state variables
+	 * are already calculated and there is no assert_plane warnings
+	 * during bootup.
+	 */
+	ret = intel_initial_commit(&i915->drm);
+	if (ret)
+		drm_dbg_kms(&i915->drm, "Initial modeset failed, %d\n", ret);
+
+	intel_overlay_setup(i915);
+
+	ret = intel_fbdev_init(&i915->drm);
+	if (ret)
+		return ret;
+
+	/* Only enable hotplug handling once the fbdev is fully set up. */
+	intel_hpd_init(i915);
+	intel_hpd_poll_disable(i915);
+
+	skl_watermark_ipc_init(i915);
+
+	return 0;
+}
+
+void i830_enable_pipe(struct drm_i915_private *dev_priv, enum pipe pipe)
+{
+	struct intel_crtc *crtc = intel_crtc_for_pipe(dev_priv, pipe);
+	/* 640x480@60Hz, ~25175 kHz */
+	struct dpll clock = {
+		.m1 = 18,
+		.m2 = 7,
+		.p1 = 13,
+		.p2 = 4,
+		.n = 2,
+	};
+	u32 dpll, fp;
+	int i;
+
+	drm_WARN_ON(&dev_priv->drm,
+		    i9xx_calc_dpll_params(48000, &clock) != 25154);
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "enabling pipe %c due to force quirk (vco=%d dot=%d)\n",
+		    pipe_name(pipe), clock.vco, clock.dot);
+
+	fp = i9xx_dpll_compute_fp(&clock);
+	dpll = DPLL_DVO_2X_MODE |
+		DPLL_VGA_MODE_DIS |
+		((clock.p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT) |
+		PLL_P2_DIVIDE_BY_4 |
+		PLL_REF_INPUT_DREFCLK |
+		DPLL_VCO_ENABLE;
+
+	intel_de_write(dev_priv, HTOTAL(pipe), (640 - 1) | ((800 - 1) << 16));
+	intel_de_write(dev_priv, HBLANK(pipe), (640 - 1) | ((800 - 1) << 16));
+	intel_de_write(dev_priv, HSYNC(pipe), (656 - 1) | ((752 - 1) << 16));
+	intel_de_write(dev_priv, VTOTAL(pipe), (480 - 1) | ((525 - 1) << 16));
+	intel_de_write(dev_priv, VBLANK(pipe), (480 - 1) | ((525 - 1) << 16));
+	intel_de_write(dev_priv, VSYNC(pipe), (490 - 1) | ((492 - 1) << 16));
+	intel_de_write(dev_priv, PIPESRC(pipe), ((640 - 1) << 16) | (480 - 1));
+
+	intel_de_write(dev_priv, FP0(pipe), fp);
+	intel_de_write(dev_priv, FP1(pipe), fp);
+
+	/*
+	 * Apparently we need to have VGA mode enabled prior to changing
+	 * the P1/P2 dividers. Otherwise the DPLL will keep using the old
+	 * dividers, even though the register value does change.
+	 */
+	intel_de_write(dev_priv, DPLL(pipe), dpll & ~DPLL_VGA_MODE_DIS);
+	intel_de_write(dev_priv, DPLL(pipe), dpll);
+
+	/* Wait for the clocks to stabilize. */
+	intel_de_posting_read(dev_priv, DPLL(pipe));
+	udelay(150);
+
+	/* The pixel multiplier can only be updated once the
+	 * DPLL is enabled and the clocks are stable.
+	 *
+	 * So write it again.
+	 */
+	intel_de_write(dev_priv, DPLL(pipe), dpll);
+
+	/* We do this three times for luck */
+	for (i = 0; i < 3 ; i++) {
+		intel_de_write(dev_priv, DPLL(pipe), dpll);
+		intel_de_posting_read(dev_priv, DPLL(pipe));
+		udelay(150); /* wait for warmup */
+	}
+
+	intel_de_write(dev_priv, PIPECONF(pipe), PIPECONF_ENABLE);
+	intel_de_posting_read(dev_priv, PIPECONF(pipe));
+
+	intel_wait_for_pipe_scanline_moving(crtc);
+}
+
+void i830_disable_pipe(struct drm_i915_private *dev_priv, enum pipe pipe)
+{
+	struct intel_crtc *crtc = intel_crtc_for_pipe(dev_priv, pipe);
+
+	drm_dbg_kms(&dev_priv->drm, "disabling pipe %c due to force quirk\n",
+		    pipe_name(pipe));
+
+	drm_WARN_ON(&dev_priv->drm,
+		    intel_de_read(dev_priv, DSPCNTR(PLANE_A)) & DISP_ENABLE);
+	drm_WARN_ON(&dev_priv->drm,
+		    intel_de_read(dev_priv, DSPCNTR(PLANE_B)) & DISP_ENABLE);
+	drm_WARN_ON(&dev_priv->drm,
+		    intel_de_read(dev_priv, DSPCNTR(PLANE_C)) & DISP_ENABLE);
+	drm_WARN_ON(&dev_priv->drm,
+		    intel_de_read(dev_priv, CURCNTR(PIPE_A)) & MCURSOR_MODE_MASK);
+	drm_WARN_ON(&dev_priv->drm,
+		    intel_de_read(dev_priv, CURCNTR(PIPE_B)) & MCURSOR_MODE_MASK);
+
+	intel_de_write(dev_priv, PIPECONF(pipe), 0);
+	intel_de_posting_read(dev_priv, PIPECONF(pipe));
+
+	intel_wait_for_pipe_scanline_stopped(crtc);
+
+	intel_de_write(dev_priv, DPLL(pipe), DPLL_VGA_MODE_DIS);
+	intel_de_posting_read(dev_priv, DPLL(pipe));
+}
+
+void intel_display_resume(struct drm_device *dev)
+{
+	struct drm_i915_private *i915 = to_i915(dev);
+	struct drm_atomic_state *state = i915->modeset_restore_state;
+	struct drm_modeset_acquire_ctx ctx;
+	int ret;
+
+	if (!HAS_DISPLAY(i915))
+		return;
+
+	i915->modeset_restore_state = NULL;
+	if (state)
+		state->acquire_ctx = &ctx;
+
+	drm_modeset_acquire_init(&ctx, 0);
+
+	while (1) {
+		ret = drm_modeset_lock_all_ctx(dev, &ctx);
+		if (ret != -EDEADLK)
+			break;
+
+		drm_modeset_backoff(&ctx);
+	}
+
+	if (!ret)
+		ret = __intel_display_resume(i915, state, &ctx);
+
+	skl_watermark_ipc_update(i915);
+	drm_modeset_drop_locks(&ctx);
+	drm_modeset_acquire_fini(&ctx);
+
+	if (ret)
+		drm_err(&i915->drm,
+			"Restoring old state failed with %i\n", ret);
+	if (state)
+		drm_atomic_state_put(state);
+}
+
+static void intel_hpd_poll_fini(struct drm_i915_private *i915)
+{
+	struct intel_connector *connector;
+	struct drm_connector_list_iter conn_iter;
+
+	/* Kill all the work that may have been queued by hpd. */
+	drm_connector_list_iter_begin(&i915->drm, &conn_iter);
+	for_each_intel_connector_iter(connector, &conn_iter) {
+		if (connector->modeset_retry_work.func)
+			cancel_work_sync(&connector->modeset_retry_work);
+		if (connector->hdcp.shim) {
+			cancel_delayed_work_sync(&connector->hdcp.check_work);
+			cancel_work_sync(&connector->hdcp.prop_work);
+		}
+	}
+	drm_connector_list_iter_end(&conn_iter);
+}
+
+/* part #1: call before irq uninstall */
+void intel_modeset_driver_remove(struct drm_i915_private *i915)
+{
+	if (!HAS_DISPLAY(i915))
+		return;
+
+	flush_workqueue(i915->display.wq.flip);
+	flush_workqueue(i915->display.wq.modeset);
+
+	flush_work(&i915->display.atomic_helper.free_work);
+	drm_WARN_ON(&i915->drm, !llist_empty(&i915->display.atomic_helper.free_list));
+
+	/*
+	 * MST topology needs to be suspended so we don't have any calls to
+	 * fbdev after it's finalized. MST will be destroyed later as part of
+	 * drm_mode_config_cleanup()
+	 */
+	intel_dp_mst_suspend(i915);
+}
+
+/* part #2: call after irq uninstall */
+void intel_modeset_driver_remove_noirq(struct drm_i915_private *i915)
+{
+	if (!HAS_DISPLAY(i915))
+		return;
+
+	/*
+	 * Due to the hpd irq storm handling the hotplug work can re-arm the
+	 * poll handlers. Hence disable polling after hpd handling is shut down.
+	 */
+	intel_hpd_poll_fini(i915);
+
+	/* poll work can call into fbdev, hence clean that up afterwards */
+	intel_fbdev_fini(i915);
+
+	intel_unregister_dsm_handler();
+
+	/* flush any delayed tasks or pending work */
+	flush_scheduled_work();
+
+	intel_hdcp_component_fini(i915);
+
+	intel_mode_config_cleanup(i915);
+
+	intel_overlay_cleanup(i915);
+
+	intel_gmbus_teardown(i915);
+
+	destroy_workqueue(i915->display.wq.flip);
+	destroy_workqueue(i915->display.wq.modeset);
+
+	intel_fbc_cleanup(i915);
+}
+
+/* part #3: call after gem init */
+void intel_modeset_driver_remove_nogem(struct drm_i915_private *i915)
+{
+	intel_dmc_ucode_fini(i915);
+
+	intel_power_domains_driver_remove(i915);
+
+	intel_vga_unregister(i915);
+
+	intel_bios_driver_remove(i915);
+}
+
+bool intel_modeset_probe_defer(struct pci_dev *pdev)
+{
+	struct drm_privacy_screen *privacy_screen;
+
+	/*
+	 * apple-gmux is needed on dual GPU MacBook Pro
+	 * to probe the panel if we're the inactive GPU.
+	 */
+	if (vga_switcheroo_client_probe_defer(pdev))
+		return true;
+
+	/* If the LCD panel has a privacy-screen, wait for it */
+	privacy_screen = drm_privacy_screen_get(&pdev->dev, NULL);
+	if (IS_ERR(privacy_screen) && PTR_ERR(privacy_screen) == -EPROBE_DEFER)
+		return true;
+
+	drm_privacy_screen_put(privacy_screen);
+
+	return false;
+}
+
+void intel_display_driver_register(struct drm_i915_private *i915)
+{
+	if (!HAS_DISPLAY(i915))
+		return;
+
+	intel_display_debugfs_register(i915);
+
+	/* Must be done after probing outputs */
+	intel_opregion_register(i915);
+	intel_acpi_video_register(i915);
+
+	intel_audio_init(i915);
+
+	/*
+	 * Some ports require correctly set-up hpd registers for
+	 * detection to work properly (leading to ghost connected
+	 * connector status), e.g. VGA on gm45.  Hence we can only set
+	 * up the initial fbdev config after hpd irqs are fully
+	 * enabled. We do it last so that the async config cannot run
+	 * before the connectors are registered.
+	 */
+	intel_fbdev_initial_config_async(&i915->drm);
+
+	/*
+	 * We need to coordinate the hotplugs with the asynchronous
+	 * fbdev configuration, for which we use the
+	 * fbdev->async_cookie.
+	 */
+	drm_kms_helper_poll_init(&i915->drm);
+}
+
+void intel_display_driver_unregister(struct drm_i915_private *i915)
+{
+	if (!HAS_DISPLAY(i915))
+		return;
+
+	intel_fbdev_unregister(i915);
+	intel_audio_deinit(i915);
+
+	/*
+	 * After flushing the fbdev (incl. a late async config which
+	 * will have delayed queuing of a hotplug event), then flush
+	 * the hotplug events.
+	 */
+	drm_kms_helper_poll_fini(&i915->drm);
+	drm_atomic_helper_shutdown(&i915->drm);
+
+	acpi_video_unregister();
+	intel_opregion_unregister(i915);
+}
+
+bool intel_scanout_needs_vtd_wa(struct drm_i915_private *i915)
+{
+	return DISPLAY_VER(i915) >= 6 && i915_vtd_active(i915);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_display.h b/drivers/gpu/drm/i915/display/intel_display.h
new file mode 100644
index 000000000..b4f941674
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_display.h
@@ -0,0 +1,721 @@
+/*
+ * Copyright © 2006-2019 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ */
+
+#ifndef _INTEL_DISPLAY_H_
+#define _INTEL_DISPLAY_H_
+
+#include <drm/drm_util.h>
+
+#include "i915_reg_defs.h"
+
+enum drm_scaling_filter;
+struct dpll;
+struct drm_connector;
+struct drm_device;
+struct drm_display_mode;
+struct drm_encoder;
+struct drm_file;
+struct drm_format_info;
+struct drm_framebuffer;
+struct drm_i915_gem_object;
+struct drm_i915_private;
+struct drm_mode_fb_cmd2;
+struct drm_modeset_acquire_ctx;
+struct drm_plane;
+struct drm_plane_state;
+struct i915_address_space;
+struct i915_gtt_view;
+struct intel_atomic_state;
+struct intel_crtc;
+struct intel_crtc_state;
+struct intel_digital_port;
+struct intel_dp;
+struct intel_encoder;
+struct intel_initial_plane_config;
+struct intel_load_detect_pipe;
+struct intel_plane;
+struct intel_plane_state;
+struct intel_power_domain_mask;
+struct intel_remapped_info;
+struct intel_rotation_info;
+struct pci_dev;
+
+enum i915_gpio {
+	GPIOA,
+	GPIOB,
+	GPIOC,
+	GPIOD,
+	GPIOE,
+	GPIOF,
+	GPIOG,
+	GPIOH,
+	__GPIOI_UNUSED,
+	GPIOJ,
+	GPIOK,
+	GPIOL,
+	GPIOM,
+	GPION,
+	GPIOO,
+};
+
+/*
+ * Keep the pipe enum values fixed: the code assumes that PIPE_A=0, the
+ * rest have consecutive values and match the enum values of transcoders
+ * with a 1:1 transcoder -> pipe mapping.
+ */
+enum pipe {
+	INVALID_PIPE = -1,
+
+	PIPE_A = 0,
+	PIPE_B,
+	PIPE_C,
+	PIPE_D,
+	_PIPE_EDP,
+
+	I915_MAX_PIPES = _PIPE_EDP
+};
+
+#define pipe_name(p) ((p) + 'A')
+
+enum transcoder {
+	INVALID_TRANSCODER = -1,
+	/*
+	 * The following transcoders have a 1:1 transcoder -> pipe mapping,
+	 * keep their values fixed: the code assumes that TRANSCODER_A=0, the
+	 * rest have consecutive values and match the enum values of the pipes
+	 * they map to.
+	 */
+	TRANSCODER_A = PIPE_A,
+	TRANSCODER_B = PIPE_B,
+	TRANSCODER_C = PIPE_C,
+	TRANSCODER_D = PIPE_D,
+
+	/*
+	 * The following transcoders can map to any pipe, their enum value
+	 * doesn't need to stay fixed.
+	 */
+	TRANSCODER_EDP,
+	TRANSCODER_DSI_0,
+	TRANSCODER_DSI_1,
+	TRANSCODER_DSI_A = TRANSCODER_DSI_0,	/* legacy DSI */
+	TRANSCODER_DSI_C = TRANSCODER_DSI_1,	/* legacy DSI */
+
+	I915_MAX_TRANSCODERS
+};
+
+static inline const char *transcoder_name(enum transcoder transcoder)
+{
+	switch (transcoder) {
+	case TRANSCODER_A:
+		return "A";
+	case TRANSCODER_B:
+		return "B";
+	case TRANSCODER_C:
+		return "C";
+	case TRANSCODER_D:
+		return "D";
+	case TRANSCODER_EDP:
+		return "EDP";
+	case TRANSCODER_DSI_A:
+		return "DSI A";
+	case TRANSCODER_DSI_C:
+		return "DSI C";
+	default:
+		return "<invalid>";
+	}
+}
+
+static inline bool transcoder_is_dsi(enum transcoder transcoder)
+{
+	return transcoder == TRANSCODER_DSI_A || transcoder == TRANSCODER_DSI_C;
+}
+
+/*
+ * Global legacy plane identifier. Valid only for primary/sprite
+ * planes on pre-g4x, and only for primary planes on g4x-bdw.
+ */
+enum i9xx_plane_id {
+	PLANE_A,
+	PLANE_B,
+	PLANE_C,
+};
+
+#define plane_name(p) ((p) + 'A')
+#define sprite_name(p, s) ((p) * RUNTIME_INFO(dev_priv)->num_sprites[(p)] + (s) + 'A')
+
+/*
+ * Per-pipe plane identifier.
+ * I915_MAX_PLANES in the enum below is the maximum (across all platforms)
+ * number of planes per CRTC.  Not all platforms really have this many planes,
+ * which means some arrays of size I915_MAX_PLANES may have unused entries
+ * between the topmost sprite plane and the cursor plane.
+ *
+ * This is expected to be passed to various register macros
+ * (eg. PLANE_CTL(), PS_PLANE_SEL(), etc.) so adjust with care.
+ */
+enum plane_id {
+	PLANE_PRIMARY,
+	PLANE_SPRITE0,
+	PLANE_SPRITE1,
+	PLANE_SPRITE2,
+	PLANE_SPRITE3,
+	PLANE_SPRITE4,
+	PLANE_SPRITE5,
+	PLANE_CURSOR,
+
+	I915_MAX_PLANES,
+};
+
+#define for_each_plane_id_on_crtc(__crtc, __p) \
+	for ((__p) = PLANE_PRIMARY; (__p) < I915_MAX_PLANES; (__p)++) \
+		for_each_if((__crtc)->plane_ids_mask & BIT(__p))
+
+#define for_each_dbuf_slice(__dev_priv, __slice) \
+	for ((__slice) = DBUF_S1; (__slice) < I915_MAX_DBUF_SLICES; (__slice)++) \
+		for_each_if(INTEL_INFO(__dev_priv)->display.dbuf.slice_mask & BIT(__slice))
+
+#define for_each_dbuf_slice_in_mask(__dev_priv, __slice, __mask) \
+	for_each_dbuf_slice((__dev_priv), (__slice)) \
+		for_each_if((__mask) & BIT(__slice))
+
+enum port {
+	PORT_NONE = -1,
+
+	PORT_A = 0,
+	PORT_B,
+	PORT_C,
+	PORT_D,
+	PORT_E,
+	PORT_F,
+	PORT_G,
+	PORT_H,
+	PORT_I,
+
+	/* tgl+ */
+	PORT_TC1 = PORT_D,
+	PORT_TC2,
+	PORT_TC3,
+	PORT_TC4,
+	PORT_TC5,
+	PORT_TC6,
+
+	/* XE_LPD repositions D/E offsets and bitfields */
+	PORT_D_XELPD = PORT_TC5,
+	PORT_E_XELPD,
+
+	I915_MAX_PORTS
+};
+
+#define port_name(p) ((p) + 'A')
+
+/*
+ * Ports identifier referenced from other drivers.
+ * Expected to remain stable over time
+ */
+static inline const char *port_identifier(enum port port)
+{
+	switch (port) {
+	case PORT_A:
+		return "Port A";
+	case PORT_B:
+		return "Port B";
+	case PORT_C:
+		return "Port C";
+	case PORT_D:
+		return "Port D";
+	case PORT_E:
+		return "Port E";
+	case PORT_F:
+		return "Port F";
+	case PORT_G:
+		return "Port G";
+	case PORT_H:
+		return "Port H";
+	case PORT_I:
+		return "Port I";
+	default:
+		return "<invalid>";
+	}
+}
+
+enum tc_port {
+	TC_PORT_NONE = -1,
+
+	TC_PORT_1 = 0,
+	TC_PORT_2,
+	TC_PORT_3,
+	TC_PORT_4,
+	TC_PORT_5,
+	TC_PORT_6,
+
+	I915_MAX_TC_PORTS
+};
+
+enum tc_port_mode {
+	TC_PORT_DISCONNECTED,
+	TC_PORT_TBT_ALT,
+	TC_PORT_DP_ALT,
+	TC_PORT_LEGACY,
+};
+
+enum dpio_channel {
+	DPIO_CH0,
+	DPIO_CH1
+};
+
+enum dpio_phy {
+	DPIO_PHY0,
+	DPIO_PHY1,
+	DPIO_PHY2,
+};
+
+enum aux_ch {
+	AUX_CH_A,
+	AUX_CH_B,
+	AUX_CH_C,
+	AUX_CH_D,
+	AUX_CH_E, /* ICL+ */
+	AUX_CH_F,
+	AUX_CH_G,
+	AUX_CH_H,
+	AUX_CH_I,
+
+	/* tgl+ */
+	AUX_CH_USBC1 = AUX_CH_D,
+	AUX_CH_USBC2,
+	AUX_CH_USBC3,
+	AUX_CH_USBC4,
+	AUX_CH_USBC5,
+	AUX_CH_USBC6,
+
+	/* XE_LPD repositions D/E offsets and bitfields */
+	AUX_CH_D_XELPD = AUX_CH_USBC5,
+	AUX_CH_E_XELPD,
+};
+
+#define aux_ch_name(a) ((a) + 'A')
+
+/* Used by dp and fdi links */
+struct intel_link_m_n {
+	u32 tu;
+	u32 data_m;
+	u32 data_n;
+	u32 link_m;
+	u32 link_n;
+};
+
+enum phy {
+	PHY_NONE = -1,
+
+	PHY_A = 0,
+	PHY_B,
+	PHY_C,
+	PHY_D,
+	PHY_E,
+	PHY_F,
+	PHY_G,
+	PHY_H,
+	PHY_I,
+
+	I915_MAX_PHYS
+};
+
+#define phy_name(a) ((a) + 'A')
+
+enum phy_fia {
+	FIA1,
+	FIA2,
+	FIA3,
+};
+
+enum hpd_pin {
+	HPD_NONE = 0,
+	HPD_TV = HPD_NONE,     /* TV is known to be unreliable */
+	HPD_CRT,
+	HPD_SDVO_B,
+	HPD_SDVO_C,
+	HPD_PORT_A,
+	HPD_PORT_B,
+	HPD_PORT_C,
+	HPD_PORT_D,
+	HPD_PORT_E,
+	HPD_PORT_TC1,
+	HPD_PORT_TC2,
+	HPD_PORT_TC3,
+	HPD_PORT_TC4,
+	HPD_PORT_TC5,
+	HPD_PORT_TC6,
+
+	HPD_NUM_PINS
+};
+
+#define for_each_hpd_pin(__pin) \
+	for ((__pin) = (HPD_NONE + 1); (__pin) < HPD_NUM_PINS; (__pin)++)
+
+#define for_each_pipe(__dev_priv, __p) \
+	for ((__p) = 0; (__p) < I915_MAX_PIPES; (__p)++) \
+		for_each_if(RUNTIME_INFO(__dev_priv)->pipe_mask & BIT(__p))
+
+#define for_each_pipe_masked(__dev_priv, __p, __mask) \
+	for_each_pipe(__dev_priv, __p) \
+		for_each_if((__mask) & BIT(__p))
+
+#define for_each_cpu_transcoder(__dev_priv, __t) \
+	for ((__t) = 0; (__t) < I915_MAX_TRANSCODERS; (__t)++)	\
+		for_each_if (RUNTIME_INFO(__dev_priv)->cpu_transcoder_mask & BIT(__t))
+
+#define for_each_cpu_transcoder_masked(__dev_priv, __t, __mask) \
+	for_each_cpu_transcoder(__dev_priv, __t) \
+		for_each_if ((__mask) & BIT(__t))
+
+#define for_each_sprite(__dev_priv, __p, __s)				\
+	for ((__s) = 0;							\
+	     (__s) < RUNTIME_INFO(__dev_priv)->num_sprites[(__p)];	\
+	     (__s)++)
+
+#define for_each_port(__port) \
+	for ((__port) = PORT_A; (__port) < I915_MAX_PORTS; (__port)++)
+
+#define for_each_port_masked(__port, __ports_mask)			\
+	for_each_port(__port)						\
+		for_each_if((__ports_mask) & BIT(__port))
+
+#define for_each_phy_masked(__phy, __phys_mask) \
+	for ((__phy) = PHY_A; (__phy) < I915_MAX_PHYS; (__phy)++)	\
+		for_each_if((__phys_mask) & BIT(__phy))
+
+#define for_each_crtc(dev, crtc) \
+	list_for_each_entry(crtc, &(dev)->mode_config.crtc_list, head)
+
+#define for_each_intel_plane(dev, intel_plane) \
+	list_for_each_entry(intel_plane,			\
+			    &(dev)->mode_config.plane_list,	\
+			    base.head)
+
+#define for_each_intel_plane_mask(dev, intel_plane, plane_mask)		\
+	list_for_each_entry(intel_plane,				\
+			    &(dev)->mode_config.plane_list,		\
+			    base.head)					\
+		for_each_if((plane_mask) &				\
+			    drm_plane_mask(&intel_plane->base))
+
+#define for_each_intel_plane_on_crtc(dev, intel_crtc, intel_plane)	\
+	list_for_each_entry(intel_plane,				\
+			    &(dev)->mode_config.plane_list,		\
+			    base.head)					\
+		for_each_if((intel_plane)->pipe == (intel_crtc)->pipe)
+
+#define for_each_intel_crtc(dev, intel_crtc)				\
+	list_for_each_entry(intel_crtc,					\
+			    &(dev)->mode_config.crtc_list,		\
+			    base.head)
+
+#define for_each_intel_crtc_in_pipe_mask(dev, intel_crtc, pipe_mask)	\
+	list_for_each_entry(intel_crtc,					\
+			    &(dev)->mode_config.crtc_list,		\
+			    base.head)					\
+		for_each_if((pipe_mask) & BIT(intel_crtc->pipe))
+
+#define for_each_intel_encoder(dev, intel_encoder)		\
+	list_for_each_entry(intel_encoder,			\
+			    &(dev)->mode_config.encoder_list,	\
+			    base.head)
+
+#define for_each_intel_encoder_mask(dev, intel_encoder, encoder_mask)	\
+	list_for_each_entry(intel_encoder,				\
+			    &(dev)->mode_config.encoder_list,		\
+			    base.head)					\
+		for_each_if((encoder_mask) &				\
+			    drm_encoder_mask(&intel_encoder->base))
+
+#define for_each_intel_encoder_mask_with_psr(dev, intel_encoder, encoder_mask) \
+	list_for_each_entry((intel_encoder), &(dev)->mode_config.encoder_list, base.head) \
+		for_each_if(((encoder_mask) & drm_encoder_mask(&(intel_encoder)->base)) && \
+			    intel_encoder_can_psr(intel_encoder))
+
+#define for_each_intel_dp(dev, intel_encoder)			\
+	for_each_intel_encoder(dev, intel_encoder)		\
+		for_each_if(intel_encoder_is_dp(intel_encoder))
+
+#define for_each_intel_encoder_with_psr(dev, intel_encoder) \
+	for_each_intel_encoder((dev), (intel_encoder)) \
+		for_each_if(intel_encoder_can_psr(intel_encoder))
+
+#define for_each_intel_connector_iter(intel_connector, iter) \
+	while ((intel_connector = to_intel_connector(drm_connector_list_iter_next(iter))))
+
+#define for_each_encoder_on_crtc(dev, __crtc, intel_encoder) \
+	list_for_each_entry((intel_encoder), &(dev)->mode_config.encoder_list, base.head) \
+		for_each_if((intel_encoder)->base.crtc == (__crtc))
+
+#define for_each_connector_on_encoder(dev, __encoder, intel_connector) \
+	list_for_each_entry((intel_connector), &(dev)->mode_config.connector_list, base.head) \
+		for_each_if((intel_connector)->base.encoder == (__encoder))
+
+#define for_each_old_intel_plane_in_state(__state, plane, old_plane_state, __i) \
+	for ((__i) = 0; \
+	     (__i) < (__state)->base.dev->mode_config.num_total_plane && \
+		     ((plane) = to_intel_plane((__state)->base.planes[__i].ptr), \
+		      (old_plane_state) = to_intel_plane_state((__state)->base.planes[__i].old_state), 1); \
+	     (__i)++) \
+		for_each_if(plane)
+
+#define for_each_new_intel_plane_in_state(__state, plane, new_plane_state, __i) \
+	for ((__i) = 0; \
+	     (__i) < (__state)->base.dev->mode_config.num_total_plane && \
+		     ((plane) = to_intel_plane((__state)->base.planes[__i].ptr), \
+		      (new_plane_state) = to_intel_plane_state((__state)->base.planes[__i].new_state), 1); \
+	     (__i)++) \
+		for_each_if(plane)
+
+#define for_each_new_intel_crtc_in_state(__state, crtc, new_crtc_state, __i) \
+	for ((__i) = 0; \
+	     (__i) < (__state)->base.dev->mode_config.num_crtc && \
+		     ((crtc) = to_intel_crtc((__state)->base.crtcs[__i].ptr), \
+		      (new_crtc_state) = to_intel_crtc_state((__state)->base.crtcs[__i].new_state), 1); \
+	     (__i)++) \
+		for_each_if(crtc)
+
+#define for_each_oldnew_intel_plane_in_state(__state, plane, old_plane_state, new_plane_state, __i) \
+	for ((__i) = 0; \
+	     (__i) < (__state)->base.dev->mode_config.num_total_plane && \
+		     ((plane) = to_intel_plane((__state)->base.planes[__i].ptr), \
+		      (old_plane_state) = to_intel_plane_state((__state)->base.planes[__i].old_state), \
+		      (new_plane_state) = to_intel_plane_state((__state)->base.planes[__i].new_state), 1); \
+	     (__i)++) \
+		for_each_if(plane)
+
+#define for_each_oldnew_intel_crtc_in_state(__state, crtc, old_crtc_state, new_crtc_state, __i) \
+	for ((__i) = 0; \
+	     (__i) < (__state)->base.dev->mode_config.num_crtc && \
+		     ((crtc) = to_intel_crtc((__state)->base.crtcs[__i].ptr), \
+		      (old_crtc_state) = to_intel_crtc_state((__state)->base.crtcs[__i].old_state), \
+		      (new_crtc_state) = to_intel_crtc_state((__state)->base.crtcs[__i].new_state), 1); \
+	     (__i)++) \
+		for_each_if(crtc)
+
+#define for_each_oldnew_intel_crtc_in_state_reverse(__state, crtc, old_crtc_state, new_crtc_state, __i) \
+	for ((__i) = (__state)->base.dev->mode_config.num_crtc - 1; \
+	     (__i) >= 0  && \
+	     ((crtc) = to_intel_crtc((__state)->base.crtcs[__i].ptr), \
+	      (old_crtc_state) = to_intel_crtc_state((__state)->base.crtcs[__i].old_state), \
+	      (new_crtc_state) = to_intel_crtc_state((__state)->base.crtcs[__i].new_state), 1); \
+	     (__i)--) \
+		for_each_if(crtc)
+
+#define intel_atomic_crtc_state_for_each_plane_state( \
+		  plane, plane_state, \
+		  crtc_state) \
+	for_each_intel_plane_mask(((crtc_state)->uapi.state->dev), (plane), \
+				((crtc_state)->uapi.plane_mask)) \
+		for_each_if ((plane_state = \
+			      to_intel_plane_state(__drm_atomic_get_current_plane_state((crtc_state)->uapi.state, &plane->base))))
+
+#define for_each_new_intel_connector_in_state(__state, connector, new_connector_state, __i) \
+	for ((__i) = 0; \
+	     (__i) < (__state)->base.num_connector; \
+	     (__i)++) \
+		for_each_if ((__state)->base.connectors[__i].ptr && \
+			     ((connector) = to_intel_connector((__state)->base.connectors[__i].ptr), \
+			     (new_connector_state) = to_intel_digital_connector_state((__state)->base.connectors[__i].new_state), 1))
+
+int intel_atomic_add_affected_planes(struct intel_atomic_state *state,
+				     struct intel_crtc *crtc);
+u8 intel_calc_active_pipes(struct intel_atomic_state *state,
+			   u8 active_pipes);
+void intel_link_compute_m_n(u16 bpp, int nlanes,
+			    int pixel_clock, int link_clock,
+			    struct intel_link_m_n *m_n,
+			    bool fec_enable);
+u32 intel_plane_fb_max_stride(struct drm_i915_private *dev_priv,
+			      u32 pixel_format, u64 modifier);
+enum drm_mode_status
+intel_mode_valid_max_plane_size(struct drm_i915_private *dev_priv,
+				const struct drm_display_mode *mode,
+				bool bigjoiner);
+enum drm_mode_status
+intel_cpu_transcoder_mode_valid(struct drm_i915_private *i915,
+				const struct drm_display_mode *mode);
+enum phy intel_port_to_phy(struct drm_i915_private *i915, enum port port);
+bool is_trans_port_sync_mode(const struct intel_crtc_state *state);
+bool intel_crtc_is_bigjoiner_slave(const struct intel_crtc_state *crtc_state);
+bool intel_crtc_is_bigjoiner_master(const struct intel_crtc_state *crtc_state);
+u8 intel_crtc_bigjoiner_slave_pipes(const struct intel_crtc_state *crtc_state);
+struct intel_crtc *intel_master_crtc(const struct intel_crtc_state *crtc_state);
+bool intel_crtc_get_pipe_config(struct intel_crtc_state *crtc_state);
+bool intel_pipe_config_compare(const struct intel_crtc_state *current_config,
+			       const struct intel_crtc_state *pipe_config,
+			       bool fastset);
+void intel_crtc_update_active_timings(const struct intel_crtc_state *crtc_state);
+
+void intel_plane_destroy(struct drm_plane *plane);
+void i9xx_set_pipeconf(const struct intel_crtc_state *crtc_state);
+void ilk_set_pipeconf(const struct intel_crtc_state *crtc_state);
+void intel_enable_transcoder(const struct intel_crtc_state *new_crtc_state);
+void intel_disable_transcoder(const struct intel_crtc_state *old_crtc_state);
+void i830_enable_pipe(struct drm_i915_private *dev_priv, enum pipe pipe);
+void i830_disable_pipe(struct drm_i915_private *dev_priv, enum pipe pipe);
+int vlv_get_hpll_vco(struct drm_i915_private *dev_priv);
+int vlv_get_cck_clock(struct drm_i915_private *dev_priv,
+		      const char *name, u32 reg, int ref_freq);
+int vlv_get_cck_clock_hpll(struct drm_i915_private *dev_priv,
+			   const char *name, u32 reg);
+void intel_init_display_hooks(struct drm_i915_private *dev_priv);
+unsigned int intel_fb_xy_to_linear(int x, int y,
+				   const struct intel_plane_state *state,
+				   int plane);
+void intel_add_fb_offsets(int *x, int *y,
+			  const struct intel_plane_state *state, int plane);
+unsigned int intel_rotation_info_size(const struct intel_rotation_info *rot_info);
+unsigned int intel_remapped_info_size(const struct intel_remapped_info *rem_info);
+bool intel_has_pending_fb_unpin(struct drm_i915_private *dev_priv);
+int intel_display_suspend(struct drm_device *dev);
+void intel_encoder_destroy(struct drm_encoder *encoder);
+struct drm_display_mode *
+intel_encoder_current_mode(struct intel_encoder *encoder);
+void intel_encoder_get_config(struct intel_encoder *encoder,
+			      struct intel_crtc_state *crtc_state);
+bool intel_phy_is_combo(struct drm_i915_private *dev_priv, enum phy phy);
+bool intel_phy_is_tc(struct drm_i915_private *dev_priv, enum phy phy);
+bool intel_phy_is_snps(struct drm_i915_private *dev_priv, enum phy phy);
+enum tc_port intel_port_to_tc(struct drm_i915_private *dev_priv,
+			      enum port port);
+int intel_get_pipe_from_crtc_id_ioctl(struct drm_device *dev, void *data,
+				      struct drm_file *file_priv);
+
+int ilk_get_lanes_required(int target_clock, int link_bw, int bpp);
+void vlv_wait_port_ready(struct drm_i915_private *dev_priv,
+			 struct intel_digital_port *dig_port,
+			 unsigned int expected_mask);
+int intel_get_load_detect_pipe(struct drm_connector *connector,
+			       struct intel_load_detect_pipe *old,
+			       struct drm_modeset_acquire_ctx *ctx);
+void intel_release_load_detect_pipe(struct drm_connector *connector,
+				    struct intel_load_detect_pipe *old,
+				    struct drm_modeset_acquire_ctx *ctx);
+struct drm_framebuffer *
+intel_framebuffer_create(struct drm_i915_gem_object *obj,
+			 struct drm_mode_fb_cmd2 *mode_cmd);
+
+bool intel_fuzzy_clock_check(int clock1, int clock2);
+
+void intel_display_prepare_reset(struct drm_i915_private *dev_priv);
+void intel_display_finish_reset(struct drm_i915_private *dev_priv);
+void intel_zero_m_n(struct intel_link_m_n *m_n);
+void intel_set_m_n(struct drm_i915_private *i915,
+		   const struct intel_link_m_n *m_n,
+		   i915_reg_t data_m_reg, i915_reg_t data_n_reg,
+		   i915_reg_t link_m_reg, i915_reg_t link_n_reg);
+void intel_get_m_n(struct drm_i915_private *i915,
+		   struct intel_link_m_n *m_n,
+		   i915_reg_t data_m_reg, i915_reg_t data_n_reg,
+		   i915_reg_t link_m_reg, i915_reg_t link_n_reg);
+bool intel_cpu_transcoder_has_m2_n2(struct drm_i915_private *dev_priv,
+				    enum transcoder transcoder);
+void intel_cpu_transcoder_set_m1_n1(struct intel_crtc *crtc,
+				    enum transcoder cpu_transcoder,
+				    const struct intel_link_m_n *m_n);
+void intel_cpu_transcoder_set_m2_n2(struct intel_crtc *crtc,
+				    enum transcoder cpu_transcoder,
+				    const struct intel_link_m_n *m_n);
+void intel_cpu_transcoder_get_m1_n1(struct intel_crtc *crtc,
+				    enum transcoder cpu_transcoder,
+				    struct intel_link_m_n *m_n);
+void intel_cpu_transcoder_get_m2_n2(struct intel_crtc *crtc,
+				    enum transcoder cpu_transcoder,
+				    struct intel_link_m_n *m_n);
+void i9xx_crtc_clock_get(struct intel_crtc *crtc,
+			 struct intel_crtc_state *pipe_config);
+int intel_dotclock_calculate(int link_freq, const struct intel_link_m_n *m_n);
+int intel_crtc_dotclock(const struct intel_crtc_state *pipe_config);
+enum intel_display_power_domain intel_port_to_power_domain(struct intel_digital_port *dig_port);
+enum intel_display_power_domain
+intel_aux_power_domain(struct intel_digital_port *dig_port);
+void intel_crtc_arm_fifo_underrun(struct intel_crtc *crtc,
+				  struct intel_crtc_state *crtc_state);
+void ilk_pfit_disable(const struct intel_crtc_state *old_crtc_state);
+
+int bdw_get_pipemisc_bpp(struct intel_crtc *crtc);
+unsigned int intel_plane_fence_y_offset(const struct intel_plane_state *plane_state);
+
+bool intel_plane_uses_fence(const struct intel_plane_state *plane_state);
+
+struct intel_encoder *
+intel_get_crtc_new_encoder(const struct intel_atomic_state *state,
+			   const struct intel_crtc_state *crtc_state);
+void intel_plane_disable_noatomic(struct intel_crtc *crtc,
+				  struct intel_plane *plane);
+void intel_set_plane_visible(struct intel_crtc_state *crtc_state,
+			     struct intel_plane_state *plane_state,
+			     bool visible);
+void intel_plane_fixup_bitmasks(struct intel_crtc_state *crtc_state);
+
+void intel_display_driver_register(struct drm_i915_private *i915);
+void intel_display_driver_unregister(struct drm_i915_private *i915);
+
+void intel_update_watermarks(struct drm_i915_private *i915);
+
+/* modesetting */
+bool intel_modeset_probe_defer(struct pci_dev *pdev);
+void intel_modeset_init_hw(struct drm_i915_private *i915);
+int intel_modeset_init_noirq(struct drm_i915_private *i915);
+int intel_modeset_init_nogem(struct drm_i915_private *i915);
+int intel_modeset_init(struct drm_i915_private *i915);
+void intel_modeset_driver_remove(struct drm_i915_private *i915);
+void intel_modeset_driver_remove_noirq(struct drm_i915_private *i915);
+void intel_modeset_driver_remove_nogem(struct drm_i915_private *i915);
+void intel_display_resume(struct drm_device *dev);
+int intel_modeset_all_pipes(struct intel_atomic_state *state);
+void intel_modeset_get_crtc_power_domains(struct intel_crtc_state *crtc_state,
+					  struct intel_power_domain_mask *old_domains);
+void intel_modeset_put_crtc_power_domains(struct intel_crtc *crtc,
+					  struct intel_power_domain_mask *domains);
+
+/* modesetting asserts */
+void assert_transcoder(struct drm_i915_private *dev_priv,
+		       enum transcoder cpu_transcoder, bool state);
+#define assert_transcoder_enabled(d, t) assert_transcoder(d, t, true)
+#define assert_transcoder_disabled(d, t) assert_transcoder(d, t, false)
+
+/* Use I915_STATE_WARN(x) and I915_STATE_WARN_ON() (rather than WARN() and
+ * WARN_ON()) for hw state sanity checks to check for unexpected conditions
+ * which may not necessarily be a user visible problem.  This will either
+ * WARN() or DRM_ERROR() depending on the verbose_checks moduleparam, to
+ * enable distros and users to tailor their preferred amount of i915 abrt
+ * spam.
+ */
+#define I915_STATE_WARN(condition, format...) ({			\
+	int __ret_warn_on = !!(condition);				\
+	if (unlikely(__ret_warn_on))					\
+		if (!WARN(i915_modparams.verbose_state_checks, format))	\
+			DRM_ERROR(format);				\
+	unlikely(__ret_warn_on);					\
+})
+
+#define I915_STATE_WARN_ON(x)						\
+	I915_STATE_WARN((x), "%s", "WARN_ON(" __stringify(x) ")")
+
+bool intel_scanout_needs_vtd_wa(struct drm_i915_private *i915);
+
+#endif
diff --git a/drivers/gpu/drm/i915/display/intel_display_core.h b/drivers/gpu/drm/i915/display/intel_display_core.h
new file mode 100644
index 000000000..9b51148e8
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_display_core.h
@@ -0,0 +1,426 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#ifndef __INTEL_DISPLAY_CORE_H__
+#define __INTEL_DISPLAY_CORE_H__
+
+#include <linux/list.h>
+#include <linux/llist.h>
+#include <linux/mutex.h>
+#include <linux/types.h>
+#include <linux/wait.h>
+#include <linux/workqueue.h>
+
+#include <drm/drm_connector.h>
+
+#include "intel_cdclk.h"
+#include "intel_display.h"
+#include "intel_display_power.h"
+#include "intel_dmc.h"
+#include "intel_dpll_mgr.h"
+#include "intel_fbc.h"
+#include "intel_global_state.h"
+#include "intel_gmbus.h"
+#include "intel_opregion.h"
+#include "intel_pm_types.h"
+
+struct drm_i915_private;
+struct drm_property;
+struct i915_audio_component;
+struct i915_hdcp_comp_master;
+struct intel_atomic_state;
+struct intel_audio_funcs;
+struct intel_bios_encoder_data;
+struct intel_cdclk_funcs;
+struct intel_cdclk_vals;
+struct intel_color_funcs;
+struct intel_crtc;
+struct intel_crtc_state;
+struct intel_dpll_funcs;
+struct intel_dpll_mgr;
+struct intel_fbdev;
+struct intel_fdi_funcs;
+struct intel_hotplug_funcs;
+struct intel_initial_plane_config;
+struct intel_overlay;
+
+/* Amount of SAGV/QGV points, BSpec precisely defines this */
+#define I915_NUM_QGV_POINTS 8
+
+/* Amount of PSF GV points, BSpec precisely defines this */
+#define I915_NUM_PSF_GV_POINTS 3
+
+struct intel_display_funcs {
+	/*
+	 * Returns the active state of the crtc, and if the crtc is active,
+	 * fills out the pipe-config with the hw state.
+	 */
+	bool (*get_pipe_config)(struct intel_crtc *,
+				struct intel_crtc_state *);
+	void (*get_initial_plane_config)(struct intel_crtc *,
+					 struct intel_initial_plane_config *);
+	void (*crtc_enable)(struct intel_atomic_state *state,
+			    struct intel_crtc *crtc);
+	void (*crtc_disable)(struct intel_atomic_state *state,
+			     struct intel_crtc *crtc);
+	void (*commit_modeset_enables)(struct intel_atomic_state *state);
+};
+
+/* functions used for watermark calcs for display. */
+struct intel_wm_funcs {
+	/* update_wm is for legacy wm management */
+	void (*update_wm)(struct drm_i915_private *dev_priv);
+	int (*compute_pipe_wm)(struct intel_atomic_state *state,
+			       struct intel_crtc *crtc);
+	int (*compute_intermediate_wm)(struct intel_atomic_state *state,
+				       struct intel_crtc *crtc);
+	void (*initial_watermarks)(struct intel_atomic_state *state,
+				   struct intel_crtc *crtc);
+	void (*atomic_update_watermarks)(struct intel_atomic_state *state,
+					 struct intel_crtc *crtc);
+	void (*optimize_watermarks)(struct intel_atomic_state *state,
+				    struct intel_crtc *crtc);
+	int (*compute_global_watermarks)(struct intel_atomic_state *state);
+};
+
+struct intel_audio {
+	/* hda/i915 audio component */
+	struct i915_audio_component *component;
+	bool component_registered;
+	/* mutex for audio/video sync */
+	struct mutex mutex;
+	int power_refcount;
+	u32 freq_cntrl;
+
+	/* Used to save the pipe-to-encoder mapping for audio */
+	struct intel_encoder *encoder_map[I915_MAX_PIPES];
+
+	/* necessary resource sharing with HDMI LPE audio driver. */
+	struct {
+		struct platform_device *platdev;
+		int irq;
+	} lpe;
+};
+
+/*
+ * dpll and cdclk state is protected by connection_mutex dpll.lock serializes
+ * intel_{prepare,enable,disable}_shared_dpll.  Must be global rather than per
+ * dpll, because on some platforms plls share registers.
+ */
+struct intel_dpll {
+	struct mutex lock;
+
+	int num_shared_dpll;
+	struct intel_shared_dpll shared_dplls[I915_NUM_PLLS];
+	const struct intel_dpll_mgr *mgr;
+
+	struct {
+		int nssc;
+		int ssc;
+	} ref_clks;
+};
+
+struct intel_frontbuffer_tracking {
+	spinlock_t lock;
+
+	/*
+	 * Tracking bits for delayed frontbuffer flushing du to gpu activity or
+	 * scheduled flips.
+	 */
+	unsigned busy_bits;
+	unsigned flip_bits;
+};
+
+struct intel_hotplug {
+	struct delayed_work hotplug_work;
+
+	const u32 *hpd, *pch_hpd;
+
+	struct {
+		unsigned long last_jiffies;
+		int count;
+		enum {
+			HPD_ENABLED = 0,
+			HPD_DISABLED = 1,
+			HPD_MARK_DISABLED = 2
+		} state;
+	} stats[HPD_NUM_PINS];
+	u32 event_bits;
+	u32 retry_bits;
+	struct delayed_work reenable_work;
+
+	u32 long_port_mask;
+	u32 short_port_mask;
+	struct work_struct dig_port_work;
+
+	struct work_struct poll_init_work;
+	bool poll_enabled;
+
+	unsigned int hpd_storm_threshold;
+	/* Whether or not to count short HPD IRQs in HPD storms */
+	u8 hpd_short_storm_enabled;
+
+	/*
+	 * if we get a HPD irq from DP and a HPD irq from non-DP
+	 * the non-DP HPD could block the workqueue on a mode config
+	 * mutex getting, that userspace may have taken. However
+	 * userspace is waiting on the DP workqueue to run which is
+	 * blocked behind the non-DP one.
+	 */
+	struct workqueue_struct *dp_wq;
+};
+
+struct intel_vbt_data {
+	/* bdb version */
+	u16 version;
+
+	/* Feature bits */
+	unsigned int int_tv_support:1;
+	unsigned int int_crt_support:1;
+	unsigned int lvds_use_ssc:1;
+	unsigned int int_lvds_support:1;
+	unsigned int display_clock_mode:1;
+	unsigned int fdi_rx_polarity_inverted:1;
+	int lvds_ssc_freq;
+	enum drm_panel_orientation orientation;
+
+	bool override_afc_startup;
+	u8 override_afc_startup_val;
+
+	int crt_ddc_pin;
+
+	struct list_head display_devices;
+	struct list_head bdb_blocks;
+
+	struct intel_bios_encoder_data *ports[I915_MAX_PORTS]; /* Non-NULL if port present. */
+	struct sdvo_device_mapping {
+		u8 initialized;
+		u8 dvo_port;
+		u8 slave_addr;
+		u8 dvo_wiring;
+		u8 i2c_pin;
+		u8 ddc_pin;
+	} sdvo_mappings[2];
+};
+
+struct intel_wm {
+	/*
+	 * Raw watermark latency values:
+	 * in 0.1us units for WM0,
+	 * in 0.5us units for WM1+.
+	 */
+	/* primary */
+	u16 pri_latency[5];
+	/* sprite */
+	u16 spr_latency[5];
+	/* cursor */
+	u16 cur_latency[5];
+	/*
+	 * Raw watermark memory latency values
+	 * for SKL for all 8 levels
+	 * in 1us units.
+	 */
+	u16 skl_latency[8];
+
+	/* current hardware state */
+	union {
+		struct ilk_wm_values hw;
+		struct vlv_wm_values vlv;
+		struct g4x_wm_values g4x;
+	};
+
+	u8 max_level;
+
+	/*
+	 * Should be held around atomic WM register writing; also
+	 * protects * intel_crtc->wm.active and
+	 * crtc_state->wm.need_postvbl_update.
+	 */
+	struct mutex wm_mutex;
+
+	bool ipc_enabled;
+};
+
+struct intel_display {
+	/* Display functions */
+	struct {
+		/* Top level crtc-ish functions */
+		const struct intel_display_funcs *display;
+
+		/* Display CDCLK functions */
+		const struct intel_cdclk_funcs *cdclk;
+
+		/* Display pll funcs */
+		const struct intel_dpll_funcs *dpll;
+
+		/* irq display functions */
+		const struct intel_hotplug_funcs *hotplug;
+
+		/* pm display functions */
+		const struct intel_wm_funcs *wm;
+
+		/* fdi display functions */
+		const struct intel_fdi_funcs *fdi;
+
+		/* Display internal color functions */
+		const struct intel_color_funcs *color;
+
+		/* Display internal audio functions */
+		const struct intel_audio_funcs *audio;
+	} funcs;
+
+	/* Grouping using anonymous structs. Keep sorted. */
+	struct intel_atomic_helper {
+		struct llist_head free_list;
+		struct work_struct free_work;
+	} atomic_helper;
+
+	struct {
+		/* backlight registers and fields in struct intel_panel */
+		struct mutex lock;
+	} backlight;
+
+	struct {
+		struct intel_global_obj obj;
+
+		struct intel_bw_info {
+			/* for each QGV point */
+			unsigned int deratedbw[I915_NUM_QGV_POINTS];
+			/* for each PSF GV point */
+			unsigned int psf_bw[I915_NUM_PSF_GV_POINTS];
+			u8 num_qgv_points;
+			u8 num_psf_gv_points;
+			u8 num_planes;
+		} max[6];
+	} bw;
+
+	struct {
+		/* The current hardware cdclk configuration */
+		struct intel_cdclk_config hw;
+
+		/* cdclk, divider, and ratio table from bspec */
+		const struct intel_cdclk_vals *table;
+
+		struct intel_global_obj obj;
+
+		unsigned int max_cdclk_freq;
+	} cdclk;
+
+	struct {
+		/* The current hardware dbuf configuration */
+		u8 enabled_slices;
+
+		struct intel_global_obj obj;
+	} dbuf;
+
+	struct {
+		/*
+		 * dkl.phy_lock protects against concurrent access of the
+		 * Dekel TypeC PHYs.
+		 */
+		spinlock_t phy_lock;
+	} dkl;
+
+	struct {
+		/* VLV/CHV/BXT/GLK DSI MMIO register base address */
+		u32 mmio_base;
+	} dsi;
+
+	struct {
+		/* list of fbdev register on this device */
+		struct intel_fbdev *fbdev;
+		struct work_struct suspend_work;
+	} fbdev;
+
+	struct {
+		unsigned int pll_freq;
+		u32 rx_config;
+	} fdi;
+
+	struct {
+		/*
+		 * Base address of where the gmbus and gpio blocks are located
+		 * (either on PCH or on SoC for platforms without PCH).
+		 */
+		u32 mmio_base;
+
+		/*
+		 * gmbus.mutex protects against concurrent usage of the single
+		 * hw gmbus controller on different i2c buses.
+		 */
+		struct mutex mutex;
+
+		struct intel_gmbus *bus[GMBUS_NUM_PINS];
+
+		wait_queue_head_t wait_queue;
+	} gmbus;
+
+	struct {
+		struct i915_hdcp_comp_master *master;
+		bool comp_added;
+
+		/* Mutex to protect the above hdcp component related values. */
+		struct mutex comp_mutex;
+	} hdcp;
+
+	struct {
+		struct i915_power_domains domains;
+
+		/* Shadow for DISPLAY_PHY_CONTROL which can't be safely read */
+		u32 chv_phy_control;
+
+		/* perform PHY state sanity checks? */
+		bool chv_phy_assert[2];
+	} power;
+
+	struct {
+		u32 mmio_base;
+
+		/* protects panel power sequencer state */
+		struct mutex mutex;
+	} pps;
+
+	struct {
+		struct drm_property *broadcast_rgb;
+		struct drm_property *force_audio;
+	} properties;
+
+	struct {
+		unsigned long mask;
+	} quirks;
+
+	struct {
+		enum {
+			I915_SAGV_UNKNOWN = 0,
+			I915_SAGV_DISABLED,
+			I915_SAGV_ENABLED,
+			I915_SAGV_NOT_CONTROLLED
+		} status;
+
+		u32 block_time_us;
+	} sagv;
+
+	struct {
+		/* ordered wq for modesets */
+		struct workqueue_struct *modeset;
+
+		/* unbound hipri wq for page flips/plane updates */
+		struct workqueue_struct *flip;
+	} wq;
+
+	/* Grouping using named structs. Keep sorted. */
+	struct intel_audio audio;
+	struct intel_dmc dmc;
+	struct intel_dpll dpll;
+	struct intel_fbc *fbc[I915_MAX_FBCS];
+	struct intel_frontbuffer_tracking fb_tracking;
+	struct intel_hotplug hotplug;
+	struct intel_opregion opregion;
+	struct intel_overlay *overlay;
+	struct intel_vbt_data vbt;
+	struct intel_wm wm;
+};
+
+#endif /* __INTEL_DISPLAY_CORE_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
new file mode 100644
index 000000000..7c7253a25
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
@@ -0,0 +1,2254 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#include <linux/string_helpers.h>
+
+#include <drm/drm_debugfs.h>
+#include <drm/drm_fourcc.h>
+
+#include "i915_debugfs.h"
+#include "intel_de.h"
+#include "intel_display_debugfs.h"
+#include "intel_display_power.h"
+#include "intel_display_power_well.h"
+#include "intel_display_types.h"
+#include "intel_dmc.h"
+#include "intel_dp.h"
+#include "intel_dp_mst.h"
+#include "intel_drrs.h"
+#include "intel_fbc.h"
+#include "intel_fbdev.h"
+#include "intel_hdcp.h"
+#include "intel_hdmi.h"
+#include "intel_panel.h"
+#include "intel_pm.h"
+#include "intel_psr.h"
+#include "intel_sprite.h"
+#include "skl_watermark.h"
+
+static inline struct drm_i915_private *node_to_i915(struct drm_info_node *node)
+{
+	return to_i915(node->minor->dev);
+}
+
+static int i915_frontbuffer_tracking(struct seq_file *m, void *unused)
+{
+	struct drm_i915_private *dev_priv = node_to_i915(m->private);
+
+	seq_printf(m, "FB tracking busy bits: 0x%08x\n",
+		   dev_priv->display.fb_tracking.busy_bits);
+
+	seq_printf(m, "FB tracking flip bits: 0x%08x\n",
+		   dev_priv->display.fb_tracking.flip_bits);
+
+	return 0;
+}
+
+static int i915_ips_status(struct seq_file *m, void *unused)
+{
+	struct drm_i915_private *dev_priv = node_to_i915(m->private);
+	intel_wakeref_t wakeref;
+
+	if (!HAS_IPS(dev_priv))
+		return -ENODEV;
+
+	wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
+
+	seq_printf(m, "Enabled by kernel parameter: %s\n",
+		   str_yes_no(dev_priv->params.enable_ips));
+
+	if (DISPLAY_VER(dev_priv) >= 8) {
+		seq_puts(m, "Currently: unknown\n");
+	} else {
+		if (intel_de_read(dev_priv, IPS_CTL) & IPS_ENABLE)
+			seq_puts(m, "Currently: enabled\n");
+		else
+			seq_puts(m, "Currently: disabled\n");
+	}
+
+	intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
+
+	return 0;
+}
+
+static int i915_sr_status(struct seq_file *m, void *unused)
+{
+	struct drm_i915_private *dev_priv = node_to_i915(m->private);
+	intel_wakeref_t wakeref;
+	bool sr_enabled = false;
+
+	wakeref = intel_display_power_get(dev_priv, POWER_DOMAIN_INIT);
+
+	if (DISPLAY_VER(dev_priv) >= 9)
+		/* no global SR status; inspect per-plane WM */;
+	else if (HAS_PCH_SPLIT(dev_priv))
+		sr_enabled = intel_de_read(dev_priv, WM1_LP_ILK) & WM_LP_ENABLE;
+	else if (IS_I965GM(dev_priv) || IS_G4X(dev_priv) ||
+		 IS_I945G(dev_priv) || IS_I945GM(dev_priv))
+		sr_enabled = intel_de_read(dev_priv, FW_BLC_SELF) & FW_BLC_SELF_EN;
+	else if (IS_I915GM(dev_priv))
+		sr_enabled = intel_de_read(dev_priv, INSTPM) & INSTPM_SELF_EN;
+	else if (IS_PINEVIEW(dev_priv))
+		sr_enabled = intel_de_read(dev_priv, DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
+	else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
+		sr_enabled = intel_de_read(dev_priv, FW_BLC_SELF_VLV) & FW_CSPWRDWNEN;
+
+	intel_display_power_put(dev_priv, POWER_DOMAIN_INIT, wakeref);
+
+	seq_printf(m, "self-refresh: %s\n", str_enabled_disabled(sr_enabled));
+
+	return 0;
+}
+
+static int i915_opregion(struct seq_file *m, void *unused)
+{
+	struct drm_i915_private *i915 = node_to_i915(m->private);
+	struct intel_opregion *opregion = &i915->display.opregion;
+
+	if (opregion->header)
+		seq_write(m, opregion->header, OPREGION_SIZE);
+
+	return 0;
+}
+
+static int i915_vbt(struct seq_file *m, void *unused)
+{
+	struct drm_i915_private *i915 = node_to_i915(m->private);
+	struct intel_opregion *opregion = &i915->display.opregion;
+
+	if (opregion->vbt)
+		seq_write(m, opregion->vbt, opregion->vbt_size);
+
+	return 0;
+}
+
+static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
+{
+	struct drm_i915_private *dev_priv = node_to_i915(m->private);
+	struct drm_device *dev = &dev_priv->drm;
+	struct intel_framebuffer *fbdev_fb = NULL;
+	struct drm_framebuffer *drm_fb;
+
+#ifdef CONFIG_DRM_FBDEV_EMULATION
+	fbdev_fb = intel_fbdev_framebuffer(dev_priv->display.fbdev.fbdev);
+	if (fbdev_fb) {
+		seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, modifier 0x%llx, refcount %d, obj ",
+			   fbdev_fb->base.width,
+			   fbdev_fb->base.height,
+			   fbdev_fb->base.format->depth,
+			   fbdev_fb->base.format->cpp[0] * 8,
+			   fbdev_fb->base.modifier,
+			   drm_framebuffer_read_refcount(&fbdev_fb->base));
+		i915_debugfs_describe_obj(m, intel_fb_obj(&fbdev_fb->base));
+		seq_putc(m, '\n');
+	}
+#endif
+
+	mutex_lock(&dev->mode_config.fb_lock);
+	drm_for_each_fb(drm_fb, dev) {
+		struct intel_framebuffer *fb = to_intel_framebuffer(drm_fb);
+		if (fb == fbdev_fb)
+			continue;
+
+		seq_printf(m, "user size: %d x %d, depth %d, %d bpp, modifier 0x%llx, refcount %d, obj ",
+			   fb->base.width,
+			   fb->base.height,
+			   fb->base.format->depth,
+			   fb->base.format->cpp[0] * 8,
+			   fb->base.modifier,
+			   drm_framebuffer_read_refcount(&fb->base));
+		i915_debugfs_describe_obj(m, intel_fb_obj(&fb->base));
+		seq_putc(m, '\n');
+	}
+	mutex_unlock(&dev->mode_config.fb_lock);
+
+	return 0;
+}
+
+static int i915_psr_sink_status_show(struct seq_file *m, void *data)
+{
+	u8 val;
+	static const char * const sink_status[] = {
+		"inactive",
+		"transition to active, capture and display",
+		"active, display from RFB",
+		"active, capture and display on sink device timings",
+		"transition to inactive, capture and display, timing re-sync",
+		"reserved",
+		"reserved",
+		"sink internal error",
+	};
+	struct drm_connector *connector = m->private;
+	struct intel_dp *intel_dp =
+		intel_attached_dp(to_intel_connector(connector));
+	int ret;
+
+	if (!CAN_PSR(intel_dp)) {
+		seq_puts(m, "PSR Unsupported\n");
+		return -ENODEV;
+	}
+
+	if (connector->status != connector_status_connected)
+		return -ENODEV;
+
+	ret = drm_dp_dpcd_readb(&intel_dp->aux, DP_PSR_STATUS, &val);
+
+	if (ret == 1) {
+		const char *str = "unknown";
+
+		val &= DP_PSR_SINK_STATE_MASK;
+		if (val < ARRAY_SIZE(sink_status))
+			str = sink_status[val];
+		seq_printf(m, "Sink PSR status: 0x%x [%s]\n", val, str);
+	} else {
+		return ret;
+	}
+
+	return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(i915_psr_sink_status);
+
+static void
+psr_source_status(struct intel_dp *intel_dp, struct seq_file *m)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	const char *status = "unknown";
+	u32 val, status_val;
+
+	if (intel_dp->psr.psr2_enabled) {
+		static const char * const live_status[] = {
+			"IDLE",
+			"CAPTURE",
+			"CAPTURE_FS",
+			"SLEEP",
+			"BUFON_FW",
+			"ML_UP",
+			"SU_STANDBY",
+			"FAST_SLEEP",
+			"DEEP_SLEEP",
+			"BUF_ON",
+			"TG_ON"
+		};
+		val = intel_de_read(dev_priv,
+				    EDP_PSR2_STATUS(intel_dp->psr.transcoder));
+		status_val = REG_FIELD_GET(EDP_PSR2_STATUS_STATE_MASK, val);
+		if (status_val < ARRAY_SIZE(live_status))
+			status = live_status[status_val];
+	} else {
+		static const char * const live_status[] = {
+			"IDLE",
+			"SRDONACK",
+			"SRDENT",
+			"BUFOFF",
+			"BUFON",
+			"AUXACK",
+			"SRDOFFACK",
+			"SRDENT_ON",
+		};
+		val = intel_de_read(dev_priv,
+				    EDP_PSR_STATUS(intel_dp->psr.transcoder));
+		status_val = (val & EDP_PSR_STATUS_STATE_MASK) >>
+			      EDP_PSR_STATUS_STATE_SHIFT;
+		if (status_val < ARRAY_SIZE(live_status))
+			status = live_status[status_val];
+	}
+
+	seq_printf(m, "Source PSR status: %s [0x%08x]\n", status, val);
+}
+
+static int intel_psr_status(struct seq_file *m, struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_psr *psr = &intel_dp->psr;
+	intel_wakeref_t wakeref;
+	const char *status;
+	bool enabled;
+	u32 val;
+
+	seq_printf(m, "Sink support: %s", str_yes_no(psr->sink_support));
+	if (psr->sink_support)
+		seq_printf(m, " [0x%02x]", intel_dp->psr_dpcd[0]);
+	seq_puts(m, "\n");
+
+	if (!psr->sink_support)
+		return 0;
+
+	wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
+	mutex_lock(&psr->lock);
+
+	if (psr->enabled)
+		status = psr->psr2_enabled ? "PSR2 enabled" : "PSR1 enabled";
+	else
+		status = "disabled";
+	seq_printf(m, "PSR mode: %s\n", status);
+
+	if (!psr->enabled) {
+		seq_printf(m, "PSR sink not reliable: %s\n",
+			   str_yes_no(psr->sink_not_reliable));
+
+		goto unlock;
+	}
+
+	if (psr->psr2_enabled) {
+		val = intel_de_read(dev_priv,
+				    EDP_PSR2_CTL(intel_dp->psr.transcoder));
+		enabled = val & EDP_PSR2_ENABLE;
+	} else {
+		val = intel_de_read(dev_priv,
+				    EDP_PSR_CTL(intel_dp->psr.transcoder));
+		enabled = val & EDP_PSR_ENABLE;
+	}
+	seq_printf(m, "Source PSR ctl: %s [0x%08x]\n",
+		   str_enabled_disabled(enabled), val);
+	psr_source_status(intel_dp, m);
+	seq_printf(m, "Busy frontbuffer bits: 0x%08x\n",
+		   psr->busy_frontbuffer_bits);
+
+	/*
+	 * SKL+ Perf counter is reset to 0 everytime DC state is entered
+	 */
+	if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
+		val = intel_de_read(dev_priv,
+				    EDP_PSR_PERF_CNT(intel_dp->psr.transcoder));
+		val &= EDP_PSR_PERF_CNT_MASK;
+		seq_printf(m, "Performance counter: %u\n", val);
+	}
+
+	if (psr->debug & I915_PSR_DEBUG_IRQ) {
+		seq_printf(m, "Last attempted entry at: %lld\n",
+			   psr->last_entry_attempt);
+		seq_printf(m, "Last exit at: %lld\n", psr->last_exit);
+	}
+
+	if (psr->psr2_enabled) {
+		u32 su_frames_val[3];
+		int frame;
+
+		/*
+		 * Reading all 3 registers before hand to minimize crossing a
+		 * frame boundary between register reads
+		 */
+		for (frame = 0; frame < PSR2_SU_STATUS_FRAMES; frame += 3) {
+			val = intel_de_read(dev_priv,
+					    PSR2_SU_STATUS(intel_dp->psr.transcoder, frame));
+			su_frames_val[frame / 3] = val;
+		}
+
+		seq_puts(m, "Frame:\tPSR2 SU blocks:\n");
+
+		for (frame = 0; frame < PSR2_SU_STATUS_FRAMES; frame++) {
+			u32 su_blocks;
+
+			su_blocks = su_frames_val[frame / 3] &
+				    PSR2_SU_STATUS_MASK(frame);
+			su_blocks = su_blocks >> PSR2_SU_STATUS_SHIFT(frame);
+			seq_printf(m, "%d\t%d\n", frame, su_blocks);
+		}
+
+		seq_printf(m, "PSR2 selective fetch: %s\n",
+			   str_enabled_disabled(psr->psr2_sel_fetch_enabled));
+	}
+
+unlock:
+	mutex_unlock(&psr->lock);
+	intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
+
+	return 0;
+}
+
+static int i915_edp_psr_status(struct seq_file *m, void *data)
+{
+	struct drm_i915_private *dev_priv = node_to_i915(m->private);
+	struct intel_dp *intel_dp = NULL;
+	struct intel_encoder *encoder;
+
+	if (!HAS_PSR(dev_priv))
+		return -ENODEV;
+
+	/* Find the first EDP which supports PSR */
+	for_each_intel_encoder_with_psr(&dev_priv->drm, encoder) {
+		intel_dp = enc_to_intel_dp(encoder);
+		break;
+	}
+
+	if (!intel_dp)
+		return -ENODEV;
+
+	return intel_psr_status(m, intel_dp);
+}
+
+static int
+i915_edp_psr_debug_set(void *data, u64 val)
+{
+	struct drm_i915_private *dev_priv = data;
+	struct intel_encoder *encoder;
+	intel_wakeref_t wakeref;
+	int ret = -ENODEV;
+
+	if (!HAS_PSR(dev_priv))
+		return ret;
+
+	for_each_intel_encoder_with_psr(&dev_priv->drm, encoder) {
+		struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+
+		drm_dbg_kms(&dev_priv->drm, "Setting PSR debug to %llx\n", val);
+
+		wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
+
+		// TODO: split to each transcoder's PSR debug state
+		ret = intel_psr_debug_set(intel_dp, val);
+
+		intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
+	}
+
+	return ret;
+}
+
+static int
+i915_edp_psr_debug_get(void *data, u64 *val)
+{
+	struct drm_i915_private *dev_priv = data;
+	struct intel_encoder *encoder;
+
+	if (!HAS_PSR(dev_priv))
+		return -ENODEV;
+
+	for_each_intel_encoder_with_psr(&dev_priv->drm, encoder) {
+		struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+
+		// TODO: split to each transcoder's PSR debug state
+		*val = READ_ONCE(intel_dp->psr.debug);
+		return 0;
+	}
+
+	return -ENODEV;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(i915_edp_psr_debug_fops,
+			i915_edp_psr_debug_get, i915_edp_psr_debug_set,
+			"%llu\n");
+
+static int i915_power_domain_info(struct seq_file *m, void *unused)
+{
+	struct drm_i915_private *i915 = node_to_i915(m->private);
+
+	intel_display_power_debug(i915, m);
+
+	return 0;
+}
+
+static void intel_seq_print_mode(struct seq_file *m, int tabs,
+				 const struct drm_display_mode *mode)
+{
+	int i;
+
+	for (i = 0; i < tabs; i++)
+		seq_putc(m, '\t');
+
+	seq_printf(m, DRM_MODE_FMT "\n", DRM_MODE_ARG(mode));
+}
+
+static void intel_encoder_info(struct seq_file *m,
+			       struct intel_crtc *crtc,
+			       struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = node_to_i915(m->private);
+	struct drm_connector_list_iter conn_iter;
+	struct drm_connector *connector;
+
+	seq_printf(m, "\t[ENCODER:%d:%s]: connectors:\n",
+		   encoder->base.base.id, encoder->base.name);
+
+	drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);
+	drm_for_each_connector_iter(connector, &conn_iter) {
+		const struct drm_connector_state *conn_state =
+			connector->state;
+
+		if (conn_state->best_encoder != &encoder->base)
+			continue;
+
+		seq_printf(m, "\t\t[CONNECTOR:%d:%s]\n",
+			   connector->base.id, connector->name);
+	}
+	drm_connector_list_iter_end(&conn_iter);
+}
+
+static void intel_panel_info(struct seq_file *m,
+			     struct intel_connector *connector)
+{
+	const struct drm_display_mode *fixed_mode;
+
+	if (list_empty(&connector->panel.fixed_modes))
+		return;
+
+	seq_puts(m, "\tfixed modes:\n");
+
+	list_for_each_entry(fixed_mode, &connector->panel.fixed_modes, head)
+		intel_seq_print_mode(m, 2, fixed_mode);
+}
+
+static void intel_hdcp_info(struct seq_file *m,
+			    struct intel_connector *intel_connector)
+{
+	bool hdcp_cap, hdcp2_cap;
+
+	if (!intel_connector->hdcp.shim) {
+		seq_puts(m, "No Connector Support");
+		goto out;
+	}
+
+	hdcp_cap = intel_hdcp_capable(intel_connector);
+	hdcp2_cap = intel_hdcp2_capable(intel_connector);
+
+	if (hdcp_cap)
+		seq_puts(m, "HDCP1.4 ");
+	if (hdcp2_cap)
+		seq_puts(m, "HDCP2.2 ");
+
+	if (!hdcp_cap && !hdcp2_cap)
+		seq_puts(m, "None");
+
+out:
+	seq_puts(m, "\n");
+}
+
+static void intel_dp_info(struct seq_file *m,
+			  struct intel_connector *intel_connector)
+{
+	struct intel_encoder *intel_encoder = intel_attached_encoder(intel_connector);
+	struct intel_dp *intel_dp = enc_to_intel_dp(intel_encoder);
+	const struct drm_property_blob *edid = intel_connector->base.edid_blob_ptr;
+
+	seq_printf(m, "\tDPCD rev: %x\n", intel_dp->dpcd[DP_DPCD_REV]);
+	seq_printf(m, "\taudio support: %s\n",
+		   str_yes_no(intel_dp->has_audio));
+
+	drm_dp_downstream_debug(m, intel_dp->dpcd, intel_dp->downstream_ports,
+				edid ? edid->data : NULL, &intel_dp->aux);
+}
+
+static void intel_dp_mst_info(struct seq_file *m,
+			      struct intel_connector *intel_connector)
+{
+	bool has_audio = intel_connector->port->has_audio;
+
+	seq_printf(m, "\taudio support: %s\n", str_yes_no(has_audio));
+}
+
+static void intel_hdmi_info(struct seq_file *m,
+			    struct intel_connector *intel_connector)
+{
+	struct intel_encoder *intel_encoder = intel_attached_encoder(intel_connector);
+	struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(intel_encoder);
+
+	seq_printf(m, "\taudio support: %s\n",
+		   str_yes_no(intel_hdmi->has_audio));
+}
+
+static void intel_connector_info(struct seq_file *m,
+				 struct drm_connector *connector)
+{
+	struct intel_connector *intel_connector = to_intel_connector(connector);
+	const struct drm_connector_state *conn_state = connector->state;
+	struct intel_encoder *encoder =
+		to_intel_encoder(conn_state->best_encoder);
+	const struct drm_display_mode *mode;
+
+	seq_printf(m, "[CONNECTOR:%d:%s]: status: %s\n",
+		   connector->base.id, connector->name,
+		   drm_get_connector_status_name(connector->status));
+
+	if (connector->status == connector_status_disconnected)
+		return;
+
+	seq_printf(m, "\tphysical dimensions: %dx%dmm\n",
+		   connector->display_info.width_mm,
+		   connector->display_info.height_mm);
+	seq_printf(m, "\tsubpixel order: %s\n",
+		   drm_get_subpixel_order_name(connector->display_info.subpixel_order));
+	seq_printf(m, "\tCEA rev: %d\n", connector->display_info.cea_rev);
+
+	if (!encoder)
+		return;
+
+	switch (connector->connector_type) {
+	case DRM_MODE_CONNECTOR_DisplayPort:
+	case DRM_MODE_CONNECTOR_eDP:
+		if (encoder->type == INTEL_OUTPUT_DP_MST)
+			intel_dp_mst_info(m, intel_connector);
+		else
+			intel_dp_info(m, intel_connector);
+		break;
+	case DRM_MODE_CONNECTOR_HDMIA:
+		if (encoder->type == INTEL_OUTPUT_HDMI ||
+		    encoder->type == INTEL_OUTPUT_DDI)
+			intel_hdmi_info(m, intel_connector);
+		break;
+	default:
+		break;
+	}
+
+	seq_puts(m, "\tHDCP version: ");
+	intel_hdcp_info(m, intel_connector);
+
+	seq_printf(m, "\tmax bpc: %u\n", connector->display_info.bpc);
+
+	intel_panel_info(m, intel_connector);
+
+	seq_printf(m, "\tmodes:\n");
+	list_for_each_entry(mode, &connector->modes, head)
+		intel_seq_print_mode(m, 2, mode);
+}
+
+static const char *plane_type(enum drm_plane_type type)
+{
+	switch (type) {
+	case DRM_PLANE_TYPE_OVERLAY:
+		return "OVL";
+	case DRM_PLANE_TYPE_PRIMARY:
+		return "PRI";
+	case DRM_PLANE_TYPE_CURSOR:
+		return "CUR";
+	/*
+	 * Deliberately omitting default: to generate compiler warnings
+	 * when a new drm_plane_type gets added.
+	 */
+	}
+
+	return "unknown";
+}
+
+static void plane_rotation(char *buf, size_t bufsize, unsigned int rotation)
+{
+	/*
+	 * According to doc only one DRM_MODE_ROTATE_ is allowed but this
+	 * will print them all to visualize if the values are misused
+	 */
+	snprintf(buf, bufsize,
+		 "%s%s%s%s%s%s(0x%08x)",
+		 (rotation & DRM_MODE_ROTATE_0) ? "0 " : "",
+		 (rotation & DRM_MODE_ROTATE_90) ? "90 " : "",
+		 (rotation & DRM_MODE_ROTATE_180) ? "180 " : "",
+		 (rotation & DRM_MODE_ROTATE_270) ? "270 " : "",
+		 (rotation & DRM_MODE_REFLECT_X) ? "FLIPX " : "",
+		 (rotation & DRM_MODE_REFLECT_Y) ? "FLIPY " : "",
+		 rotation);
+}
+
+static const char *plane_visibility(const struct intel_plane_state *plane_state)
+{
+	if (plane_state->uapi.visible)
+		return "visible";
+
+	if (plane_state->planar_slave)
+		return "planar-slave";
+
+	return "hidden";
+}
+
+static void intel_plane_uapi_info(struct seq_file *m, struct intel_plane *plane)
+{
+	const struct intel_plane_state *plane_state =
+		to_intel_plane_state(plane->base.state);
+	const struct drm_framebuffer *fb = plane_state->uapi.fb;
+	struct drm_rect src, dst;
+	char rot_str[48];
+
+	src = drm_plane_state_src(&plane_state->uapi);
+	dst = drm_plane_state_dest(&plane_state->uapi);
+
+	plane_rotation(rot_str, sizeof(rot_str),
+		       plane_state->uapi.rotation);
+
+	seq_puts(m, "\t\tuapi: [FB:");
+	if (fb)
+		seq_printf(m, "%d] %p4cc,0x%llx,%dx%d", fb->base.id,
+			   &fb->format->format, fb->modifier, fb->width,
+			   fb->height);
+	else
+		seq_puts(m, "0] n/a,0x0,0x0,");
+	seq_printf(m, ", visible=%s, src=" DRM_RECT_FP_FMT ", dst=" DRM_RECT_FMT
+		   ", rotation=%s\n", plane_visibility(plane_state),
+		   DRM_RECT_FP_ARG(&src), DRM_RECT_ARG(&dst), rot_str);
+
+	if (plane_state->planar_linked_plane)
+		seq_printf(m, "\t\tplanar: Linked to [PLANE:%d:%s] as a %s\n",
+			   plane_state->planar_linked_plane->base.base.id, plane_state->planar_linked_plane->base.name,
+			   plane_state->planar_slave ? "slave" : "master");
+}
+
+static void intel_plane_hw_info(struct seq_file *m, struct intel_plane *plane)
+{
+	const struct intel_plane_state *plane_state =
+		to_intel_plane_state(plane->base.state);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	char rot_str[48];
+
+	if (!fb)
+		return;
+
+	plane_rotation(rot_str, sizeof(rot_str),
+		       plane_state->hw.rotation);
+
+	seq_printf(m, "\t\thw: [FB:%d] %p4cc,0x%llx,%dx%d, visible=%s, src="
+		   DRM_RECT_FP_FMT ", dst=" DRM_RECT_FMT ", rotation=%s\n",
+		   fb->base.id, &fb->format->format,
+		   fb->modifier, fb->width, fb->height,
+		   str_yes_no(plane_state->uapi.visible),
+		   DRM_RECT_FP_ARG(&plane_state->uapi.src),
+		   DRM_RECT_ARG(&plane_state->uapi.dst),
+		   rot_str);
+}
+
+static void intel_plane_info(struct seq_file *m, struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = node_to_i915(m->private);
+	struct intel_plane *plane;
+
+	for_each_intel_plane_on_crtc(&dev_priv->drm, crtc, plane) {
+		seq_printf(m, "\t[PLANE:%d:%s]: type=%s\n",
+			   plane->base.base.id, plane->base.name,
+			   plane_type(plane->base.type));
+		intel_plane_uapi_info(m, plane);
+		intel_plane_hw_info(m, plane);
+	}
+}
+
+static void intel_scaler_info(struct seq_file *m, struct intel_crtc *crtc)
+{
+	const struct intel_crtc_state *crtc_state =
+		to_intel_crtc_state(crtc->base.state);
+	int num_scalers = crtc->num_scalers;
+	int i;
+
+	/* Not all platformas have a scaler */
+	if (num_scalers) {
+		seq_printf(m, "\tnum_scalers=%d, scaler_users=%x scaler_id=%d scaling_filter=%d",
+			   num_scalers,
+			   crtc_state->scaler_state.scaler_users,
+			   crtc_state->scaler_state.scaler_id,
+			   crtc_state->hw.scaling_filter);
+
+		for (i = 0; i < num_scalers; i++) {
+			const struct intel_scaler *sc =
+				&crtc_state->scaler_state.scalers[i];
+
+			seq_printf(m, ", scalers[%d]: use=%s, mode=%x",
+				   i, str_yes_no(sc->in_use), sc->mode);
+		}
+		seq_puts(m, "\n");
+	} else {
+		seq_puts(m, "\tNo scalers available on this platform\n");
+	}
+}
+
+#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_VBLANK_EVADE)
+static void crtc_updates_info(struct seq_file *m,
+			      struct intel_crtc *crtc,
+			      const char *hdr)
+{
+	u64 count;
+	int row;
+
+	count = 0;
+	for (row = 0; row < ARRAY_SIZE(crtc->debug.vbl.times); row++)
+		count += crtc->debug.vbl.times[row];
+	seq_printf(m, "%sUpdates: %llu\n", hdr, count);
+	if (!count)
+		return;
+
+	for (row = 0; row < ARRAY_SIZE(crtc->debug.vbl.times); row++) {
+		char columns[80] = "       |";
+		unsigned int x;
+
+		if (row & 1) {
+			const char *units;
+
+			if (row > 10) {
+				x = 1000000;
+				units = "ms";
+			} else {
+				x = 1000;
+				units = "us";
+			}
+
+			snprintf(columns, sizeof(columns), "%4ld%s |",
+				 DIV_ROUND_CLOSEST(BIT(row + 9), x), units);
+		}
+
+		if (crtc->debug.vbl.times[row]) {
+			x = ilog2(crtc->debug.vbl.times[row]);
+			memset(columns + 8, '*', x);
+			columns[8 + x] = '\0';
+		}
+
+		seq_printf(m, "%s%s\n", hdr, columns);
+	}
+
+	seq_printf(m, "%sMin update: %lluns\n",
+		   hdr, crtc->debug.vbl.min);
+	seq_printf(m, "%sMax update: %lluns\n",
+		   hdr, crtc->debug.vbl.max);
+	seq_printf(m, "%sAverage update: %lluns\n",
+		   hdr, div64_u64(crtc->debug.vbl.sum,  count));
+	seq_printf(m, "%sOverruns > %uus: %u\n",
+		   hdr, VBLANK_EVASION_TIME_US, crtc->debug.vbl.over);
+}
+
+static int crtc_updates_show(struct seq_file *m, void *data)
+{
+	crtc_updates_info(m, m->private, "");
+	return 0;
+}
+
+static int crtc_updates_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, crtc_updates_show, inode->i_private);
+}
+
+static ssize_t crtc_updates_write(struct file *file,
+				  const char __user *ubuf,
+				  size_t len, loff_t *offp)
+{
+	struct seq_file *m = file->private_data;
+	struct intel_crtc *crtc = m->private;
+
+	/* May race with an update. Meh. */
+	memset(&crtc->debug.vbl, 0, sizeof(crtc->debug.vbl));
+
+	return len;
+}
+
+static const struct file_operations crtc_updates_fops = {
+	.owner = THIS_MODULE,
+	.open = crtc_updates_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+	.write = crtc_updates_write
+};
+
+static void crtc_updates_add(struct drm_crtc *crtc)
+{
+	debugfs_create_file("i915_update_info", 0644, crtc->debugfs_entry,
+			    to_intel_crtc(crtc), &crtc_updates_fops);
+}
+
+#else
+static void crtc_updates_info(struct seq_file *m,
+			      struct intel_crtc *crtc,
+			      const char *hdr)
+{
+}
+
+static void crtc_updates_add(struct drm_crtc *crtc)
+{
+}
+#endif
+
+static void intel_crtc_info(struct seq_file *m, struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = node_to_i915(m->private);
+	const struct intel_crtc_state *crtc_state =
+		to_intel_crtc_state(crtc->base.state);
+	struct intel_encoder *encoder;
+
+	seq_printf(m, "[CRTC:%d:%s]:\n",
+		   crtc->base.base.id, crtc->base.name);
+
+	seq_printf(m, "\tuapi: enable=%s, active=%s, mode=" DRM_MODE_FMT "\n",
+		   str_yes_no(crtc_state->uapi.enable),
+		   str_yes_no(crtc_state->uapi.active),
+		   DRM_MODE_ARG(&crtc_state->uapi.mode));
+
+	seq_printf(m, "\thw: enable=%s, active=%s\n",
+		   str_yes_no(crtc_state->hw.enable), str_yes_no(crtc_state->hw.active));
+	seq_printf(m, "\tadjusted_mode=" DRM_MODE_FMT "\n",
+		   DRM_MODE_ARG(&crtc_state->hw.adjusted_mode));
+	seq_printf(m, "\tpipe__mode=" DRM_MODE_FMT "\n",
+		   DRM_MODE_ARG(&crtc_state->hw.pipe_mode));
+
+	seq_printf(m, "\tpipe src=" DRM_RECT_FMT ", dither=%s, bpp=%d\n",
+		   DRM_RECT_ARG(&crtc_state->pipe_src),
+		   str_yes_no(crtc_state->dither), crtc_state->pipe_bpp);
+
+	intel_scaler_info(m, crtc);
+
+	if (crtc_state->bigjoiner_pipes)
+		seq_printf(m, "\tLinked to 0x%x pipes as a %s\n",
+			   crtc_state->bigjoiner_pipes,
+			   intel_crtc_is_bigjoiner_slave(crtc_state) ? "slave" : "master");
+
+	for_each_intel_encoder_mask(&dev_priv->drm, encoder,
+				    crtc_state->uapi.encoder_mask)
+		intel_encoder_info(m, crtc, encoder);
+
+	intel_plane_info(m, crtc);
+
+	seq_printf(m, "\tunderrun reporting: cpu=%s pch=%s\n",
+		   str_yes_no(!crtc->cpu_fifo_underrun_disabled),
+		   str_yes_no(!crtc->pch_fifo_underrun_disabled));
+
+	crtc_updates_info(m, crtc, "\t");
+}
+
+static int i915_display_info(struct seq_file *m, void *unused)
+{
+	struct drm_i915_private *dev_priv = node_to_i915(m->private);
+	struct drm_device *dev = &dev_priv->drm;
+	struct intel_crtc *crtc;
+	struct drm_connector *connector;
+	struct drm_connector_list_iter conn_iter;
+	intel_wakeref_t wakeref;
+
+	wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
+
+	drm_modeset_lock_all(dev);
+
+	seq_printf(m, "CRTC info\n");
+	seq_printf(m, "---------\n");
+	for_each_intel_crtc(dev, crtc)
+		intel_crtc_info(m, crtc);
+
+	seq_printf(m, "\n");
+	seq_printf(m, "Connector info\n");
+	seq_printf(m, "--------------\n");
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	drm_for_each_connector_iter(connector, &conn_iter)
+		intel_connector_info(m, connector);
+	drm_connector_list_iter_end(&conn_iter);
+
+	drm_modeset_unlock_all(dev);
+
+	intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
+
+	return 0;
+}
+
+static int i915_shared_dplls_info(struct seq_file *m, void *unused)
+{
+	struct drm_i915_private *dev_priv = node_to_i915(m->private);
+	struct drm_device *dev = &dev_priv->drm;
+	int i;
+
+	drm_modeset_lock_all(dev);
+
+	seq_printf(m, "PLL refclks: non-SSC: %d kHz, SSC: %d kHz\n",
+		   dev_priv->display.dpll.ref_clks.nssc,
+		   dev_priv->display.dpll.ref_clks.ssc);
+
+	for (i = 0; i < dev_priv->display.dpll.num_shared_dpll; i++) {
+		struct intel_shared_dpll *pll = &dev_priv->display.dpll.shared_dplls[i];
+
+		seq_printf(m, "DPLL%i: %s, id: %i\n", i, pll->info->name,
+			   pll->info->id);
+		seq_printf(m, " pipe_mask: 0x%x, active: 0x%x, on: %s\n",
+			   pll->state.pipe_mask, pll->active_mask,
+			   str_yes_no(pll->on));
+		seq_printf(m, " tracked hardware state:\n");
+		seq_printf(m, " dpll:    0x%08x\n", pll->state.hw_state.dpll);
+		seq_printf(m, " dpll_md: 0x%08x\n",
+			   pll->state.hw_state.dpll_md);
+		seq_printf(m, " fp0:     0x%08x\n", pll->state.hw_state.fp0);
+		seq_printf(m, " fp1:     0x%08x\n", pll->state.hw_state.fp1);
+		seq_printf(m, " wrpll:   0x%08x\n", pll->state.hw_state.wrpll);
+		seq_printf(m, " cfgcr0:  0x%08x\n", pll->state.hw_state.cfgcr0);
+		seq_printf(m, " cfgcr1:  0x%08x\n", pll->state.hw_state.cfgcr1);
+		seq_printf(m, " div0:    0x%08x\n", pll->state.hw_state.div0);
+		seq_printf(m, " mg_refclkin_ctl:        0x%08x\n",
+			   pll->state.hw_state.mg_refclkin_ctl);
+		seq_printf(m, " mg_clktop2_coreclkctl1: 0x%08x\n",
+			   pll->state.hw_state.mg_clktop2_coreclkctl1);
+		seq_printf(m, " mg_clktop2_hsclkctl:    0x%08x\n",
+			   pll->state.hw_state.mg_clktop2_hsclkctl);
+		seq_printf(m, " mg_pll_div0:  0x%08x\n",
+			   pll->state.hw_state.mg_pll_div0);
+		seq_printf(m, " mg_pll_div1:  0x%08x\n",
+			   pll->state.hw_state.mg_pll_div1);
+		seq_printf(m, " mg_pll_lf:    0x%08x\n",
+			   pll->state.hw_state.mg_pll_lf);
+		seq_printf(m, " mg_pll_frac_lock: 0x%08x\n",
+			   pll->state.hw_state.mg_pll_frac_lock);
+		seq_printf(m, " mg_pll_ssc:   0x%08x\n",
+			   pll->state.hw_state.mg_pll_ssc);
+		seq_printf(m, " mg_pll_bias:  0x%08x\n",
+			   pll->state.hw_state.mg_pll_bias);
+		seq_printf(m, " mg_pll_tdc_coldst_bias: 0x%08x\n",
+			   pll->state.hw_state.mg_pll_tdc_coldst_bias);
+	}
+	drm_modeset_unlock_all(dev);
+
+	return 0;
+}
+
+static int i915_ddb_info(struct seq_file *m, void *unused)
+{
+	struct drm_i915_private *dev_priv = node_to_i915(m->private);
+	struct drm_device *dev = &dev_priv->drm;
+	struct skl_ddb_entry *entry;
+	struct intel_crtc *crtc;
+
+	if (DISPLAY_VER(dev_priv) < 9)
+		return -ENODEV;
+
+	drm_modeset_lock_all(dev);
+
+	seq_printf(m, "%-15s%8s%8s%8s\n", "", "Start", "End", "Size");
+
+	for_each_intel_crtc(&dev_priv->drm, crtc) {
+		struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+		enum pipe pipe = crtc->pipe;
+		enum plane_id plane_id;
+
+		seq_printf(m, "Pipe %c\n", pipe_name(pipe));
+
+		for_each_plane_id_on_crtc(crtc, plane_id) {
+			entry = &crtc_state->wm.skl.plane_ddb[plane_id];
+			seq_printf(m, "  Plane%-8d%8u%8u%8u\n", plane_id + 1,
+				   entry->start, entry->end,
+				   skl_ddb_entry_size(entry));
+		}
+
+		entry = &crtc_state->wm.skl.plane_ddb[PLANE_CURSOR];
+		seq_printf(m, "  %-13s%8u%8u%8u\n", "Cursor", entry->start,
+			   entry->end, skl_ddb_entry_size(entry));
+	}
+
+	drm_modeset_unlock_all(dev);
+
+	return 0;
+}
+
+static int i915_drrs_status(struct seq_file *m, void *unused)
+{
+	struct drm_i915_private *dev_priv = node_to_i915(m->private);
+	struct drm_connector_list_iter conn_iter;
+	struct intel_connector *connector;
+	struct intel_crtc *crtc;
+
+	drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);
+	for_each_intel_connector_iter(connector, &conn_iter) {
+		seq_printf(m, "[CONNECTOR:%d:%s] DRRS type: %s\n",
+			   connector->base.base.id, connector->base.name,
+			   intel_drrs_type_str(intel_panel_drrs_type(connector)));
+	}
+	drm_connector_list_iter_end(&conn_iter);
+
+	seq_puts(m, "\n");
+
+	for_each_intel_crtc(&dev_priv->drm, crtc) {
+		const struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+
+		seq_printf(m, "[CRTC:%d:%s]:\n",
+			   crtc->base.base.id, crtc->base.name);
+
+		mutex_lock(&crtc->drrs.mutex);
+
+		/* DRRS Supported */
+		seq_printf(m, "\tDRRS Enabled: %s\n",
+			   str_yes_no(crtc_state->has_drrs));
+
+		seq_printf(m, "\tDRRS Active: %s\n",
+			   str_yes_no(intel_drrs_is_active(crtc)));
+
+		seq_printf(m, "\tBusy_frontbuffer_bits: 0x%X\n",
+			   crtc->drrs.busy_frontbuffer_bits);
+
+		seq_printf(m, "\tDRRS refresh rate: %s\n",
+			   crtc->drrs.refresh_rate == DRRS_REFRESH_RATE_LOW ?
+			   "low" : "high");
+
+		mutex_unlock(&crtc->drrs.mutex);
+	}
+
+	return 0;
+}
+
+static bool
+intel_lpsp_power_well_enabled(struct drm_i915_private *i915,
+			      enum i915_power_well_id power_well_id)
+{
+	intel_wakeref_t wakeref;
+	bool is_enabled;
+
+	wakeref = intel_runtime_pm_get(&i915->runtime_pm);
+	is_enabled = intel_display_power_well_is_enabled(i915,
+							 power_well_id);
+	intel_runtime_pm_put(&i915->runtime_pm, wakeref);
+
+	return is_enabled;
+}
+
+static int i915_lpsp_status(struct seq_file *m, void *unused)
+{
+	struct drm_i915_private *i915 = node_to_i915(m->private);
+	bool lpsp_enabled = false;
+
+	if (DISPLAY_VER(i915) >= 13 || IS_DISPLAY_VER(i915, 9, 10)) {
+		lpsp_enabled = !intel_lpsp_power_well_enabled(i915, SKL_DISP_PW_2);
+	} else if (IS_DISPLAY_VER(i915, 11, 12)) {
+		lpsp_enabled = !intel_lpsp_power_well_enabled(i915, ICL_DISP_PW_3);
+	} else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) {
+		lpsp_enabled = !intel_lpsp_power_well_enabled(i915, HSW_DISP_PW_GLOBAL);
+	} else {
+		seq_puts(m, "LPSP: not supported\n");
+		return 0;
+	}
+
+	seq_printf(m, "LPSP: %s\n", str_enabled_disabled(lpsp_enabled));
+
+	return 0;
+}
+
+static int i915_dp_mst_info(struct seq_file *m, void *unused)
+{
+	struct drm_i915_private *dev_priv = node_to_i915(m->private);
+	struct drm_device *dev = &dev_priv->drm;
+	struct intel_encoder *intel_encoder;
+	struct intel_digital_port *dig_port;
+	struct drm_connector *connector;
+	struct drm_connector_list_iter conn_iter;
+
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	drm_for_each_connector_iter(connector, &conn_iter) {
+		if (connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort)
+			continue;
+
+		intel_encoder = intel_attached_encoder(to_intel_connector(connector));
+		if (!intel_encoder || intel_encoder->type == INTEL_OUTPUT_DP_MST)
+			continue;
+
+		dig_port = enc_to_dig_port(intel_encoder);
+		if (!intel_dp_mst_source_support(&dig_port->dp))
+			continue;
+
+		seq_printf(m, "MST Source Port [ENCODER:%d:%s]\n",
+			   dig_port->base.base.base.id,
+			   dig_port->base.base.name);
+		drm_dp_mst_dump_topology(m, &dig_port->dp.mst_mgr);
+	}
+	drm_connector_list_iter_end(&conn_iter);
+
+	return 0;
+}
+
+static ssize_t i915_displayport_test_active_write(struct file *file,
+						  const char __user *ubuf,
+						  size_t len, loff_t *offp)
+{
+	char *input_buffer;
+	int status = 0;
+	struct drm_device *dev;
+	struct drm_connector *connector;
+	struct drm_connector_list_iter conn_iter;
+	struct intel_dp *intel_dp;
+	int val = 0;
+
+	dev = ((struct seq_file *)file->private_data)->private;
+
+	if (len == 0)
+		return 0;
+
+	input_buffer = memdup_user_nul(ubuf, len);
+	if (IS_ERR(input_buffer))
+		return PTR_ERR(input_buffer);
+
+	drm_dbg(&to_i915(dev)->drm,
+		"Copied %d bytes from user\n", (unsigned int)len);
+
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	drm_for_each_connector_iter(connector, &conn_iter) {
+		struct intel_encoder *encoder;
+
+		if (connector->connector_type !=
+		    DRM_MODE_CONNECTOR_DisplayPort)
+			continue;
+
+		encoder = to_intel_encoder(connector->encoder);
+		if (encoder && encoder->type == INTEL_OUTPUT_DP_MST)
+			continue;
+
+		if (encoder && connector->status == connector_status_connected) {
+			intel_dp = enc_to_intel_dp(encoder);
+			status = kstrtoint(input_buffer, 10, &val);
+			if (status < 0)
+				break;
+			drm_dbg(&to_i915(dev)->drm,
+				"Got %d for test active\n", val);
+			/* To prevent erroneous activation of the compliance
+			 * testing code, only accept an actual value of 1 here
+			 */
+			if (val == 1)
+				intel_dp->compliance.test_active = true;
+			else
+				intel_dp->compliance.test_active = false;
+		}
+	}
+	drm_connector_list_iter_end(&conn_iter);
+	kfree(input_buffer);
+	if (status < 0)
+		return status;
+
+	*offp += len;
+	return len;
+}
+
+static int i915_displayport_test_active_show(struct seq_file *m, void *data)
+{
+	struct drm_i915_private *dev_priv = m->private;
+	struct drm_device *dev = &dev_priv->drm;
+	struct drm_connector *connector;
+	struct drm_connector_list_iter conn_iter;
+	struct intel_dp *intel_dp;
+
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	drm_for_each_connector_iter(connector, &conn_iter) {
+		struct intel_encoder *encoder;
+
+		if (connector->connector_type !=
+		    DRM_MODE_CONNECTOR_DisplayPort)
+			continue;
+
+		encoder = to_intel_encoder(connector->encoder);
+		if (encoder && encoder->type == INTEL_OUTPUT_DP_MST)
+			continue;
+
+		if (encoder && connector->status == connector_status_connected) {
+			intel_dp = enc_to_intel_dp(encoder);
+			if (intel_dp->compliance.test_active)
+				seq_puts(m, "1");
+			else
+				seq_puts(m, "0");
+		} else
+			seq_puts(m, "0");
+	}
+	drm_connector_list_iter_end(&conn_iter);
+
+	return 0;
+}
+
+static int i915_displayport_test_active_open(struct inode *inode,
+					     struct file *file)
+{
+	return single_open(file, i915_displayport_test_active_show,
+			   inode->i_private);
+}
+
+static const struct file_operations i915_displayport_test_active_fops = {
+	.owner = THIS_MODULE,
+	.open = i915_displayport_test_active_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+	.write = i915_displayport_test_active_write
+};
+
+static int i915_displayport_test_data_show(struct seq_file *m, void *data)
+{
+	struct drm_i915_private *dev_priv = m->private;
+	struct drm_device *dev = &dev_priv->drm;
+	struct drm_connector *connector;
+	struct drm_connector_list_iter conn_iter;
+	struct intel_dp *intel_dp;
+
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	drm_for_each_connector_iter(connector, &conn_iter) {
+		struct intel_encoder *encoder;
+
+		if (connector->connector_type !=
+		    DRM_MODE_CONNECTOR_DisplayPort)
+			continue;
+
+		encoder = to_intel_encoder(connector->encoder);
+		if (encoder && encoder->type == INTEL_OUTPUT_DP_MST)
+			continue;
+
+		if (encoder && connector->status == connector_status_connected) {
+			intel_dp = enc_to_intel_dp(encoder);
+			if (intel_dp->compliance.test_type ==
+			    DP_TEST_LINK_EDID_READ)
+				seq_printf(m, "%lx",
+					   intel_dp->compliance.test_data.edid);
+			else if (intel_dp->compliance.test_type ==
+				 DP_TEST_LINK_VIDEO_PATTERN) {
+				seq_printf(m, "hdisplay: %d\n",
+					   intel_dp->compliance.test_data.hdisplay);
+				seq_printf(m, "vdisplay: %d\n",
+					   intel_dp->compliance.test_data.vdisplay);
+				seq_printf(m, "bpc: %u\n",
+					   intel_dp->compliance.test_data.bpc);
+			} else if (intel_dp->compliance.test_type ==
+				   DP_TEST_LINK_PHY_TEST_PATTERN) {
+				seq_printf(m, "pattern: %d\n",
+					   intel_dp->compliance.test_data.phytest.phy_pattern);
+				seq_printf(m, "Number of lanes: %d\n",
+					   intel_dp->compliance.test_data.phytest.num_lanes);
+				seq_printf(m, "Link Rate: %d\n",
+					   intel_dp->compliance.test_data.phytest.link_rate);
+				seq_printf(m, "level: %02x\n",
+					   intel_dp->train_set[0]);
+			}
+		} else
+			seq_puts(m, "0");
+	}
+	drm_connector_list_iter_end(&conn_iter);
+
+	return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(i915_displayport_test_data);
+
+static int i915_displayport_test_type_show(struct seq_file *m, void *data)
+{
+	struct drm_i915_private *dev_priv = m->private;
+	struct drm_device *dev = &dev_priv->drm;
+	struct drm_connector *connector;
+	struct drm_connector_list_iter conn_iter;
+	struct intel_dp *intel_dp;
+
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	drm_for_each_connector_iter(connector, &conn_iter) {
+		struct intel_encoder *encoder;
+
+		if (connector->connector_type !=
+		    DRM_MODE_CONNECTOR_DisplayPort)
+			continue;
+
+		encoder = to_intel_encoder(connector->encoder);
+		if (encoder && encoder->type == INTEL_OUTPUT_DP_MST)
+			continue;
+
+		if (encoder && connector->status == connector_status_connected) {
+			intel_dp = enc_to_intel_dp(encoder);
+			seq_printf(m, "%02lx\n", intel_dp->compliance.test_type);
+		} else
+			seq_puts(m, "0");
+	}
+	drm_connector_list_iter_end(&conn_iter);
+
+	return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(i915_displayport_test_type);
+
+static void wm_latency_show(struct seq_file *m, const u16 wm[8])
+{
+	struct drm_i915_private *dev_priv = m->private;
+	struct drm_device *dev = &dev_priv->drm;
+	int level;
+	int num_levels;
+
+	if (IS_CHERRYVIEW(dev_priv))
+		num_levels = 3;
+	else if (IS_VALLEYVIEW(dev_priv))
+		num_levels = 1;
+	else if (IS_G4X(dev_priv))
+		num_levels = 3;
+	else
+		num_levels = ilk_wm_max_level(dev_priv) + 1;
+
+	drm_modeset_lock_all(dev);
+
+	for (level = 0; level < num_levels; level++) {
+		unsigned int latency = wm[level];
+
+		/*
+		 * - WM1+ latency values in 0.5us units
+		 * - latencies are in us on gen9/vlv/chv
+		 */
+		if (DISPLAY_VER(dev_priv) >= 9 ||
+		    IS_VALLEYVIEW(dev_priv) ||
+		    IS_CHERRYVIEW(dev_priv) ||
+		    IS_G4X(dev_priv))
+			latency *= 10;
+		else if (level > 0)
+			latency *= 5;
+
+		seq_printf(m, "WM%d %u (%u.%u usec)\n",
+			   level, wm[level], latency / 10, latency % 10);
+	}
+
+	drm_modeset_unlock_all(dev);
+}
+
+static int pri_wm_latency_show(struct seq_file *m, void *data)
+{
+	struct drm_i915_private *dev_priv = m->private;
+	const u16 *latencies;
+
+	if (DISPLAY_VER(dev_priv) >= 9)
+		latencies = dev_priv->display.wm.skl_latency;
+	else
+		latencies = dev_priv->display.wm.pri_latency;
+
+	wm_latency_show(m, latencies);
+
+	return 0;
+}
+
+static int spr_wm_latency_show(struct seq_file *m, void *data)
+{
+	struct drm_i915_private *dev_priv = m->private;
+	const u16 *latencies;
+
+	if (DISPLAY_VER(dev_priv) >= 9)
+		latencies = dev_priv->display.wm.skl_latency;
+	else
+		latencies = dev_priv->display.wm.spr_latency;
+
+	wm_latency_show(m, latencies);
+
+	return 0;
+}
+
+static int cur_wm_latency_show(struct seq_file *m, void *data)
+{
+	struct drm_i915_private *dev_priv = m->private;
+	const u16 *latencies;
+
+	if (DISPLAY_VER(dev_priv) >= 9)
+		latencies = dev_priv->display.wm.skl_latency;
+	else
+		latencies = dev_priv->display.wm.cur_latency;
+
+	wm_latency_show(m, latencies);
+
+	return 0;
+}
+
+static int pri_wm_latency_open(struct inode *inode, struct file *file)
+{
+	struct drm_i915_private *dev_priv = inode->i_private;
+
+	if (DISPLAY_VER(dev_priv) < 5 && !IS_G4X(dev_priv))
+		return -ENODEV;
+
+	return single_open(file, pri_wm_latency_show, dev_priv);
+}
+
+static int spr_wm_latency_open(struct inode *inode, struct file *file)
+{
+	struct drm_i915_private *dev_priv = inode->i_private;
+
+	if (HAS_GMCH(dev_priv))
+		return -ENODEV;
+
+	return single_open(file, spr_wm_latency_show, dev_priv);
+}
+
+static int cur_wm_latency_open(struct inode *inode, struct file *file)
+{
+	struct drm_i915_private *dev_priv = inode->i_private;
+
+	if (HAS_GMCH(dev_priv))
+		return -ENODEV;
+
+	return single_open(file, cur_wm_latency_show, dev_priv);
+}
+
+static ssize_t wm_latency_write(struct file *file, const char __user *ubuf,
+				size_t len, loff_t *offp, u16 wm[8])
+{
+	struct seq_file *m = file->private_data;
+	struct drm_i915_private *dev_priv = m->private;
+	struct drm_device *dev = &dev_priv->drm;
+	u16 new[8] = { 0 };
+	int num_levels;
+	int level;
+	int ret;
+	char tmp[32];
+
+	if (IS_CHERRYVIEW(dev_priv))
+		num_levels = 3;
+	else if (IS_VALLEYVIEW(dev_priv))
+		num_levels = 1;
+	else if (IS_G4X(dev_priv))
+		num_levels = 3;
+	else
+		num_levels = ilk_wm_max_level(dev_priv) + 1;
+
+	if (len >= sizeof(tmp))
+		return -EINVAL;
+
+	if (copy_from_user(tmp, ubuf, len))
+		return -EFAULT;
+
+	tmp[len] = '\0';
+
+	ret = sscanf(tmp, "%hu %hu %hu %hu %hu %hu %hu %hu",
+		     &new[0], &new[1], &new[2], &new[3],
+		     &new[4], &new[5], &new[6], &new[7]);
+	if (ret != num_levels)
+		return -EINVAL;
+
+	drm_modeset_lock_all(dev);
+
+	for (level = 0; level < num_levels; level++)
+		wm[level] = new[level];
+
+	drm_modeset_unlock_all(dev);
+
+	return len;
+}
+
+
+static ssize_t pri_wm_latency_write(struct file *file, const char __user *ubuf,
+				    size_t len, loff_t *offp)
+{
+	struct seq_file *m = file->private_data;
+	struct drm_i915_private *dev_priv = m->private;
+	u16 *latencies;
+
+	if (DISPLAY_VER(dev_priv) >= 9)
+		latencies = dev_priv->display.wm.skl_latency;
+	else
+		latencies = dev_priv->display.wm.pri_latency;
+
+	return wm_latency_write(file, ubuf, len, offp, latencies);
+}
+
+static ssize_t spr_wm_latency_write(struct file *file, const char __user *ubuf,
+				    size_t len, loff_t *offp)
+{
+	struct seq_file *m = file->private_data;
+	struct drm_i915_private *dev_priv = m->private;
+	u16 *latencies;
+
+	if (DISPLAY_VER(dev_priv) >= 9)
+		latencies = dev_priv->display.wm.skl_latency;
+	else
+		latencies = dev_priv->display.wm.spr_latency;
+
+	return wm_latency_write(file, ubuf, len, offp, latencies);
+}
+
+static ssize_t cur_wm_latency_write(struct file *file, const char __user *ubuf,
+				    size_t len, loff_t *offp)
+{
+	struct seq_file *m = file->private_data;
+	struct drm_i915_private *dev_priv = m->private;
+	u16 *latencies;
+
+	if (DISPLAY_VER(dev_priv) >= 9)
+		latencies = dev_priv->display.wm.skl_latency;
+	else
+		latencies = dev_priv->display.wm.cur_latency;
+
+	return wm_latency_write(file, ubuf, len, offp, latencies);
+}
+
+static const struct file_operations i915_pri_wm_latency_fops = {
+	.owner = THIS_MODULE,
+	.open = pri_wm_latency_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+	.write = pri_wm_latency_write
+};
+
+static const struct file_operations i915_spr_wm_latency_fops = {
+	.owner = THIS_MODULE,
+	.open = spr_wm_latency_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+	.write = spr_wm_latency_write
+};
+
+static const struct file_operations i915_cur_wm_latency_fops = {
+	.owner = THIS_MODULE,
+	.open = cur_wm_latency_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+	.write = cur_wm_latency_write
+};
+
+static int i915_hpd_storm_ctl_show(struct seq_file *m, void *data)
+{
+	struct drm_i915_private *dev_priv = m->private;
+	struct intel_hotplug *hotplug = &dev_priv->display.hotplug;
+
+	/* Synchronize with everything first in case there's been an HPD
+	 * storm, but we haven't finished handling it in the kernel yet
+	 */
+	intel_synchronize_irq(dev_priv);
+	flush_work(&dev_priv->display.hotplug.dig_port_work);
+	flush_delayed_work(&dev_priv->display.hotplug.hotplug_work);
+
+	seq_printf(m, "Threshold: %d\n", hotplug->hpd_storm_threshold);
+	seq_printf(m, "Detected: %s\n",
+		   str_yes_no(delayed_work_pending(&hotplug->reenable_work)));
+
+	return 0;
+}
+
+static ssize_t i915_hpd_storm_ctl_write(struct file *file,
+					const char __user *ubuf, size_t len,
+					loff_t *offp)
+{
+	struct seq_file *m = file->private_data;
+	struct drm_i915_private *dev_priv = m->private;
+	struct intel_hotplug *hotplug = &dev_priv->display.hotplug;
+	unsigned int new_threshold;
+	int i;
+	char *newline;
+	char tmp[16];
+
+	if (len >= sizeof(tmp))
+		return -EINVAL;
+
+	if (copy_from_user(tmp, ubuf, len))
+		return -EFAULT;
+
+	tmp[len] = '\0';
+
+	/* Strip newline, if any */
+	newline = strchr(tmp, '\n');
+	if (newline)
+		*newline = '\0';
+
+	if (strcmp(tmp, "reset") == 0)
+		new_threshold = HPD_STORM_DEFAULT_THRESHOLD;
+	else if (kstrtouint(tmp, 10, &new_threshold) != 0)
+		return -EINVAL;
+
+	if (new_threshold > 0)
+		drm_dbg_kms(&dev_priv->drm,
+			    "Setting HPD storm detection threshold to %d\n",
+			    new_threshold);
+	else
+		drm_dbg_kms(&dev_priv->drm, "Disabling HPD storm detection\n");
+
+	spin_lock_irq(&dev_priv->irq_lock);
+	hotplug->hpd_storm_threshold = new_threshold;
+	/* Reset the HPD storm stats so we don't accidentally trigger a storm */
+	for_each_hpd_pin(i)
+		hotplug->stats[i].count = 0;
+	spin_unlock_irq(&dev_priv->irq_lock);
+
+	/* Re-enable hpd immediately if we were in an irq storm */
+	flush_delayed_work(&dev_priv->display.hotplug.reenable_work);
+
+	return len;
+}
+
+static int i915_hpd_storm_ctl_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, i915_hpd_storm_ctl_show, inode->i_private);
+}
+
+static const struct file_operations i915_hpd_storm_ctl_fops = {
+	.owner = THIS_MODULE,
+	.open = i915_hpd_storm_ctl_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+	.write = i915_hpd_storm_ctl_write
+};
+
+static int i915_hpd_short_storm_ctl_show(struct seq_file *m, void *data)
+{
+	struct drm_i915_private *dev_priv = m->private;
+
+	seq_printf(m, "Enabled: %s\n",
+		   str_yes_no(dev_priv->display.hotplug.hpd_short_storm_enabled));
+
+	return 0;
+}
+
+static int
+i915_hpd_short_storm_ctl_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, i915_hpd_short_storm_ctl_show,
+			   inode->i_private);
+}
+
+static ssize_t i915_hpd_short_storm_ctl_write(struct file *file,
+					      const char __user *ubuf,
+					      size_t len, loff_t *offp)
+{
+	struct seq_file *m = file->private_data;
+	struct drm_i915_private *dev_priv = m->private;
+	struct intel_hotplug *hotplug = &dev_priv->display.hotplug;
+	char *newline;
+	char tmp[16];
+	int i;
+	bool new_state;
+
+	if (len >= sizeof(tmp))
+		return -EINVAL;
+
+	if (copy_from_user(tmp, ubuf, len))
+		return -EFAULT;
+
+	tmp[len] = '\0';
+
+	/* Strip newline, if any */
+	newline = strchr(tmp, '\n');
+	if (newline)
+		*newline = '\0';
+
+	/* Reset to the "default" state for this system */
+	if (strcmp(tmp, "reset") == 0)
+		new_state = !HAS_DP_MST(dev_priv);
+	else if (kstrtobool(tmp, &new_state) != 0)
+		return -EINVAL;
+
+	drm_dbg_kms(&dev_priv->drm, "%sabling HPD short storm detection\n",
+		    new_state ? "En" : "Dis");
+
+	spin_lock_irq(&dev_priv->irq_lock);
+	hotplug->hpd_short_storm_enabled = new_state;
+	/* Reset the HPD storm stats so we don't accidentally trigger a storm */
+	for_each_hpd_pin(i)
+		hotplug->stats[i].count = 0;
+	spin_unlock_irq(&dev_priv->irq_lock);
+
+	/* Re-enable hpd immediately if we were in an irq storm */
+	flush_delayed_work(&dev_priv->display.hotplug.reenable_work);
+
+	return len;
+}
+
+static const struct file_operations i915_hpd_short_storm_ctl_fops = {
+	.owner = THIS_MODULE,
+	.open = i915_hpd_short_storm_ctl_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+	.write = i915_hpd_short_storm_ctl_write,
+};
+
+static int i915_drrs_ctl_set(void *data, u64 val)
+{
+	struct drm_i915_private *dev_priv = data;
+	struct drm_device *dev = &dev_priv->drm;
+	struct intel_crtc *crtc;
+
+	for_each_intel_crtc(dev, crtc) {
+		struct intel_crtc_state *crtc_state;
+		struct drm_crtc_commit *commit;
+		int ret;
+
+		ret = drm_modeset_lock_single_interruptible(&crtc->base.mutex);
+		if (ret)
+			return ret;
+
+		crtc_state = to_intel_crtc_state(crtc->base.state);
+
+		if (!crtc_state->hw.active ||
+		    !crtc_state->has_drrs)
+			goto out;
+
+		commit = crtc_state->uapi.commit;
+		if (commit) {
+			ret = wait_for_completion_interruptible(&commit->hw_done);
+			if (ret)
+				goto out;
+		}
+
+		drm_dbg(&dev_priv->drm,
+			"Manually %sactivating DRRS\n", val ? "" : "de");
+
+		if (val)
+			intel_drrs_activate(crtc_state);
+		else
+			intel_drrs_deactivate(crtc_state);
+
+out:
+		drm_modeset_unlock(&crtc->base.mutex);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(i915_drrs_ctl_fops, NULL, i915_drrs_ctl_set, "%llu\n");
+
+static ssize_t
+i915_fifo_underrun_reset_write(struct file *filp,
+			       const char __user *ubuf,
+			       size_t cnt, loff_t *ppos)
+{
+	struct drm_i915_private *dev_priv = filp->private_data;
+	struct intel_crtc *crtc;
+	struct drm_device *dev = &dev_priv->drm;
+	int ret;
+	bool reset;
+
+	ret = kstrtobool_from_user(ubuf, cnt, &reset);
+	if (ret)
+		return ret;
+
+	if (!reset)
+		return cnt;
+
+	for_each_intel_crtc(dev, crtc) {
+		struct drm_crtc_commit *commit;
+		struct intel_crtc_state *crtc_state;
+
+		ret = drm_modeset_lock_single_interruptible(&crtc->base.mutex);
+		if (ret)
+			return ret;
+
+		crtc_state = to_intel_crtc_state(crtc->base.state);
+		commit = crtc_state->uapi.commit;
+		if (commit) {
+			ret = wait_for_completion_interruptible(&commit->hw_done);
+			if (!ret)
+				ret = wait_for_completion_interruptible(&commit->flip_done);
+		}
+
+		if (!ret && crtc_state->hw.active) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "Re-arming FIFO underruns on pipe %c\n",
+				    pipe_name(crtc->pipe));
+
+			intel_crtc_arm_fifo_underrun(crtc, crtc_state);
+		}
+
+		drm_modeset_unlock(&crtc->base.mutex);
+
+		if (ret)
+			return ret;
+	}
+
+	intel_fbc_reset_underrun(dev_priv);
+
+	return cnt;
+}
+
+static const struct file_operations i915_fifo_underrun_reset_ops = {
+	.owner = THIS_MODULE,
+	.open = simple_open,
+	.write = i915_fifo_underrun_reset_write,
+	.llseek = default_llseek,
+};
+
+static const struct drm_info_list intel_display_debugfs_list[] = {
+	{"i915_frontbuffer_tracking", i915_frontbuffer_tracking, 0},
+	{"i915_ips_status", i915_ips_status, 0},
+	{"i915_sr_status", i915_sr_status, 0},
+	{"i915_opregion", i915_opregion, 0},
+	{"i915_vbt", i915_vbt, 0},
+	{"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
+	{"i915_edp_psr_status", i915_edp_psr_status, 0},
+	{"i915_power_domain_info", i915_power_domain_info, 0},
+	{"i915_display_info", i915_display_info, 0},
+	{"i915_shared_dplls_info", i915_shared_dplls_info, 0},
+	{"i915_dp_mst_info", i915_dp_mst_info, 0},
+	{"i915_ddb_info", i915_ddb_info, 0},
+	{"i915_drrs_status", i915_drrs_status, 0},
+	{"i915_lpsp_status", i915_lpsp_status, 0},
+};
+
+static const struct {
+	const char *name;
+	const struct file_operations *fops;
+} intel_display_debugfs_files[] = {
+	{"i915_fifo_underrun_reset", &i915_fifo_underrun_reset_ops},
+	{"i915_pri_wm_latency", &i915_pri_wm_latency_fops},
+	{"i915_spr_wm_latency", &i915_spr_wm_latency_fops},
+	{"i915_cur_wm_latency", &i915_cur_wm_latency_fops},
+	{"i915_dp_test_data", &i915_displayport_test_data_fops},
+	{"i915_dp_test_type", &i915_displayport_test_type_fops},
+	{"i915_dp_test_active", &i915_displayport_test_active_fops},
+	{"i915_hpd_storm_ctl", &i915_hpd_storm_ctl_fops},
+	{"i915_hpd_short_storm_ctl", &i915_hpd_short_storm_ctl_fops},
+	{"i915_drrs_ctl", &i915_drrs_ctl_fops},
+	{"i915_edp_psr_debug", &i915_edp_psr_debug_fops},
+};
+
+void intel_display_debugfs_register(struct drm_i915_private *i915)
+{
+	struct drm_minor *minor = i915->drm.primary;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(intel_display_debugfs_files); i++) {
+		debugfs_create_file(intel_display_debugfs_files[i].name,
+				    S_IRUGO | S_IWUSR,
+				    minor->debugfs_root,
+				    to_i915(minor->dev),
+				    intel_display_debugfs_files[i].fops);
+	}
+
+	drm_debugfs_create_files(intel_display_debugfs_list,
+				 ARRAY_SIZE(intel_display_debugfs_list),
+				 minor->debugfs_root, minor);
+
+	intel_dmc_debugfs_register(i915);
+	intel_fbc_debugfs_register(i915);
+	skl_watermark_ipc_debugfs_register(i915);
+}
+
+static int i915_panel_show(struct seq_file *m, void *data)
+{
+	struct drm_connector *connector = m->private;
+	struct intel_dp *intel_dp =
+		intel_attached_dp(to_intel_connector(connector));
+
+	if (connector->status != connector_status_connected)
+		return -ENODEV;
+
+	seq_printf(m, "Panel power up delay: %d\n",
+		   intel_dp->pps.panel_power_up_delay);
+	seq_printf(m, "Panel power down delay: %d\n",
+		   intel_dp->pps.panel_power_down_delay);
+	seq_printf(m, "Backlight on delay: %d\n",
+		   intel_dp->pps.backlight_on_delay);
+	seq_printf(m, "Backlight off delay: %d\n",
+		   intel_dp->pps.backlight_off_delay);
+
+	return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(i915_panel);
+
+static int i915_hdcp_sink_capability_show(struct seq_file *m, void *data)
+{
+	struct drm_connector *connector = m->private;
+	struct drm_i915_private *i915 = to_i915(connector->dev);
+	struct intel_connector *intel_connector = to_intel_connector(connector);
+	int ret;
+
+	ret = drm_modeset_lock_single_interruptible(&i915->drm.mode_config.connection_mutex);
+	if (ret)
+		return ret;
+
+	if (!connector->encoder || connector->status != connector_status_connected) {
+		ret = -ENODEV;
+		goto out;
+	}
+
+	seq_printf(m, "%s:%d HDCP version: ", connector->name,
+		   connector->base.id);
+	intel_hdcp_info(m, intel_connector);
+
+out:
+	drm_modeset_unlock(&i915->drm.mode_config.connection_mutex);
+
+	return ret;
+}
+DEFINE_SHOW_ATTRIBUTE(i915_hdcp_sink_capability);
+
+static int i915_psr_status_show(struct seq_file *m, void *data)
+{
+	struct drm_connector *connector = m->private;
+	struct intel_dp *intel_dp =
+		intel_attached_dp(to_intel_connector(connector));
+
+	return intel_psr_status(m, intel_dp);
+}
+DEFINE_SHOW_ATTRIBUTE(i915_psr_status);
+
+static int i915_lpsp_capability_show(struct seq_file *m, void *data)
+{
+	struct drm_connector *connector = m->private;
+	struct drm_i915_private *i915 = to_i915(connector->dev);
+	struct intel_encoder *encoder;
+	bool lpsp_capable = false;
+
+	encoder = intel_attached_encoder(to_intel_connector(connector));
+	if (!encoder)
+		return -ENODEV;
+
+	if (connector->status != connector_status_connected)
+		return -ENODEV;
+
+	if (DISPLAY_VER(i915) >= 13)
+		lpsp_capable = encoder->port <= PORT_B;
+	else if (DISPLAY_VER(i915) >= 12)
+		/*
+		 * Actually TGL can drive LPSP on port till DDI_C
+		 * but there is no physical connected DDI_C on TGL sku's,
+		 * even driver is not initilizing DDI_C port for gen12.
+		 */
+		lpsp_capable = encoder->port <= PORT_B;
+	else if (DISPLAY_VER(i915) == 11)
+		lpsp_capable = (connector->connector_type == DRM_MODE_CONNECTOR_DSI ||
+				connector->connector_type == DRM_MODE_CONNECTOR_eDP);
+	else if (IS_DISPLAY_VER(i915, 9, 10))
+		lpsp_capable = (encoder->port == PORT_A &&
+				(connector->connector_type == DRM_MODE_CONNECTOR_DSI ||
+				 connector->connector_type == DRM_MODE_CONNECTOR_eDP ||
+				 connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort));
+	else if (IS_HASWELL(i915) || IS_BROADWELL(i915))
+		lpsp_capable = connector->connector_type == DRM_MODE_CONNECTOR_eDP;
+
+	seq_printf(m, "LPSP: %s\n", lpsp_capable ? "capable" : "incapable");
+
+	return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(i915_lpsp_capability);
+
+static int i915_dsc_fec_support_show(struct seq_file *m, void *data)
+{
+	struct drm_connector *connector = m->private;
+	struct drm_device *dev = connector->dev;
+	struct drm_crtc *crtc;
+	struct intel_dp *intel_dp;
+	struct drm_modeset_acquire_ctx ctx;
+	struct intel_crtc_state *crtc_state = NULL;
+	int ret = 0;
+	bool try_again = false;
+
+	drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
+
+	do {
+		try_again = false;
+		ret = drm_modeset_lock(&dev->mode_config.connection_mutex,
+				       &ctx);
+		if (ret) {
+			if (ret == -EDEADLK && !drm_modeset_backoff(&ctx)) {
+				try_again = true;
+				continue;
+			}
+			break;
+		}
+		crtc = connector->state->crtc;
+		if (connector->status != connector_status_connected || !crtc) {
+			ret = -ENODEV;
+			break;
+		}
+		ret = drm_modeset_lock(&crtc->mutex, &ctx);
+		if (ret == -EDEADLK) {
+			ret = drm_modeset_backoff(&ctx);
+			if (!ret) {
+				try_again = true;
+				continue;
+			}
+			break;
+		} else if (ret) {
+			break;
+		}
+		intel_dp = intel_attached_dp(to_intel_connector(connector));
+		crtc_state = to_intel_crtc_state(crtc->state);
+		seq_printf(m, "DSC_Enabled: %s\n",
+			   str_yes_no(crtc_state->dsc.compression_enable));
+		seq_printf(m, "DSC_Sink_Support: %s\n",
+			   str_yes_no(drm_dp_sink_supports_dsc(intel_dp->dsc_dpcd)));
+		seq_printf(m, "Force_DSC_Enable: %s\n",
+			   str_yes_no(intel_dp->force_dsc_en));
+		if (!intel_dp_is_edp(intel_dp))
+			seq_printf(m, "FEC_Sink_Support: %s\n",
+				   str_yes_no(drm_dp_sink_supports_fec(intel_dp->fec_capable)));
+	} while (try_again);
+
+	drm_modeset_drop_locks(&ctx);
+	drm_modeset_acquire_fini(&ctx);
+
+	return ret;
+}
+
+static ssize_t i915_dsc_fec_support_write(struct file *file,
+					  const char __user *ubuf,
+					  size_t len, loff_t *offp)
+{
+	bool dsc_enable = false;
+	int ret;
+	struct drm_connector *connector =
+		((struct seq_file *)file->private_data)->private;
+	struct intel_encoder *encoder = intel_attached_encoder(to_intel_connector(connector));
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+
+	if (len == 0)
+		return 0;
+
+	drm_dbg(&i915->drm,
+		"Copied %zu bytes from user to force DSC\n", len);
+
+	ret = kstrtobool_from_user(ubuf, len, &dsc_enable);
+	if (ret < 0)
+		return ret;
+
+	drm_dbg(&i915->drm, "Got %s for DSC Enable\n",
+		(dsc_enable) ? "true" : "false");
+	intel_dp->force_dsc_en = dsc_enable;
+
+	*offp += len;
+	return len;
+}
+
+static int i915_dsc_fec_support_open(struct inode *inode,
+				     struct file *file)
+{
+	return single_open(file, i915_dsc_fec_support_show,
+			   inode->i_private);
+}
+
+static const struct file_operations i915_dsc_fec_support_fops = {
+	.owner = THIS_MODULE,
+	.open = i915_dsc_fec_support_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+	.write = i915_dsc_fec_support_write
+};
+
+static int i915_dsc_bpc_show(struct seq_file *m, void *data)
+{
+	struct drm_connector *connector = m->private;
+	struct drm_device *dev = connector->dev;
+	struct drm_crtc *crtc;
+	struct intel_crtc_state *crtc_state;
+	struct intel_encoder *encoder = intel_attached_encoder(to_intel_connector(connector));
+	int ret;
+
+	if (!encoder)
+		return -ENODEV;
+
+	ret = drm_modeset_lock_single_interruptible(&dev->mode_config.connection_mutex);
+	if (ret)
+		return ret;
+
+	crtc = connector->state->crtc;
+	if (connector->status != connector_status_connected || !crtc) {
+		ret = -ENODEV;
+		goto out;
+	}
+
+	crtc_state = to_intel_crtc_state(crtc->state);
+	seq_printf(m, "Input_BPC: %d\n", crtc_state->dsc.config.bits_per_component);
+
+out:	drm_modeset_unlock(&dev->mode_config.connection_mutex);
+
+	return ret;
+}
+
+static ssize_t i915_dsc_bpc_write(struct file *file,
+				  const char __user *ubuf,
+				  size_t len, loff_t *offp)
+{
+	struct drm_connector *connector =
+		((struct seq_file *)file->private_data)->private;
+	struct intel_encoder *encoder = intel_attached_encoder(to_intel_connector(connector));
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	int dsc_bpc = 0;
+	int ret;
+
+	ret = kstrtoint_from_user(ubuf, len, 0, &dsc_bpc);
+	if (ret < 0)
+		return ret;
+
+	intel_dp->force_dsc_bpc = dsc_bpc;
+	*offp += len;
+
+	return len;
+}
+
+static int i915_dsc_bpc_open(struct inode *inode,
+			     struct file *file)
+{
+	return single_open(file, i915_dsc_bpc_show, inode->i_private);
+}
+
+static const struct file_operations i915_dsc_bpc_fops = {
+	.owner = THIS_MODULE,
+	.open = i915_dsc_bpc_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+	.write = i915_dsc_bpc_write
+};
+
+/*
+ * Returns the Current CRTC's bpc.
+ * Example usage: cat /sys/kernel/debug/dri/0/crtc-0/i915_current_bpc
+ */
+static int i915_current_bpc_show(struct seq_file *m, void *data)
+{
+	struct intel_crtc *crtc = to_intel_crtc(m->private);
+	struct intel_crtc_state *crtc_state;
+	int ret;
+
+	ret = drm_modeset_lock_single_interruptible(&crtc->base.mutex);
+	if (ret)
+		return ret;
+
+	crtc_state = to_intel_crtc_state(crtc->base.state);
+	seq_printf(m, "Current: %u\n", crtc_state->pipe_bpp / 3);
+
+	drm_modeset_unlock(&crtc->base.mutex);
+
+	return ret;
+}
+DEFINE_SHOW_ATTRIBUTE(i915_current_bpc);
+
+/**
+ * intel_connector_debugfs_add - add i915 specific connector debugfs files
+ * @connector: pointer to a registered drm_connector
+ *
+ * Cleanup will be done by drm_connector_unregister() through a call to
+ * drm_debugfs_connector_remove().
+ */
+void intel_connector_debugfs_add(struct intel_connector *intel_connector)
+{
+	struct drm_connector *connector = &intel_connector->base;
+	struct dentry *root = connector->debugfs_entry;
+	struct drm_i915_private *dev_priv = to_i915(connector->dev);
+
+	/* The connector must have been registered beforehands. */
+	if (!root)
+		return;
+
+	if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) {
+		debugfs_create_file("i915_panel_timings", S_IRUGO, root,
+				    connector, &i915_panel_fops);
+		debugfs_create_file("i915_psr_sink_status", S_IRUGO, root,
+				    connector, &i915_psr_sink_status_fops);
+	}
+
+	if (HAS_PSR(dev_priv) &&
+	    connector->connector_type == DRM_MODE_CONNECTOR_eDP) {
+		debugfs_create_file("i915_psr_status", 0444, root,
+				    connector, &i915_psr_status_fops);
+	}
+
+	if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort ||
+	    connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
+	    connector->connector_type == DRM_MODE_CONNECTOR_HDMIB) {
+		debugfs_create_file("i915_hdcp_sink_capability", S_IRUGO, root,
+				    connector, &i915_hdcp_sink_capability_fops);
+	}
+
+	if (DISPLAY_VER(dev_priv) >= 11 &&
+	    ((connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort &&
+	    !to_intel_connector(connector)->mst_port) ||
+	    connector->connector_type == DRM_MODE_CONNECTOR_eDP)) {
+		debugfs_create_file("i915_dsc_fec_support", 0644, root,
+				    connector, &i915_dsc_fec_support_fops);
+
+		debugfs_create_file("i915_dsc_bpc", 0644, root,
+				    connector, &i915_dsc_bpc_fops);
+	}
+
+	if (connector->connector_type == DRM_MODE_CONNECTOR_DSI ||
+	    connector->connector_type == DRM_MODE_CONNECTOR_eDP ||
+	    connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort ||
+	    connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
+	    connector->connector_type == DRM_MODE_CONNECTOR_HDMIB)
+		debugfs_create_file("i915_lpsp_capability", 0444, root,
+				    connector, &i915_lpsp_capability_fops);
+}
+
+/**
+ * intel_crtc_debugfs_add - add i915 specific crtc debugfs files
+ * @crtc: pointer to a drm_crtc
+ *
+ * Failure to add debugfs entries should generally be ignored.
+ */
+void intel_crtc_debugfs_add(struct drm_crtc *crtc)
+{
+	if (!crtc->debugfs_entry)
+		return;
+
+	crtc_updates_add(crtc);
+	intel_fbc_crtc_debugfs_add(to_intel_crtc(crtc));
+
+	debugfs_create_file("i915_current_bpc", 0444, crtc->debugfs_entry, crtc,
+			    &i915_current_bpc_fops);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.h b/drivers/gpu/drm/i915/display/intel_display_debugfs.h
new file mode 100644
index 000000000..d3a79c07c
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#ifndef __INTEL_DISPLAY_DEBUGFS_H__
+#define __INTEL_DISPLAY_DEBUGFS_H__
+
+struct drm_crtc;
+struct drm_i915_private;
+struct intel_connector;
+
+#ifdef CONFIG_DEBUG_FS
+void intel_display_debugfs_register(struct drm_i915_private *i915);
+void intel_connector_debugfs_add(struct intel_connector *connector);
+void intel_crtc_debugfs_add(struct drm_crtc *crtc);
+#else
+static inline void intel_display_debugfs_register(struct drm_i915_private *i915) {}
+static inline void intel_connector_debugfs_add(struct intel_connector *connector) {}
+static inline void intel_crtc_debugfs_add(struct drm_crtc *crtc) {}
+#endif
+
+#endif /* __INTEL_DISPLAY_DEBUGFS_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c b/drivers/gpu/drm/i915/display/intel_display_power.c
new file mode 100644
index 000000000..1a63da28f
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_display_power.c
@@ -0,0 +1,2489 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#include <linux/string_helpers.h>
+
+#include "i915_drv.h"
+#include "i915_irq.h"
+#include "intel_backlight_regs.h"
+#include "intel_cdclk.h"
+#include "intel_combo_phy.h"
+#include "intel_de.h"
+#include "intel_display_power.h"
+#include "intel_display_power_map.h"
+#include "intel_display_power_well.h"
+#include "intel_display_types.h"
+#include "intel_dmc.h"
+#include "intel_mchbar_regs.h"
+#include "intel_pch_refclk.h"
+#include "intel_pcode.h"
+#include "intel_snps_phy.h"
+#include "skl_watermark.h"
+#include "vlv_sideband.h"
+
+#define for_each_power_domain_well(__dev_priv, __power_well, __domain)	\
+	for_each_power_well(__dev_priv, __power_well)				\
+		for_each_if(test_bit((__domain), (__power_well)->domains.bits))
+
+#define for_each_power_domain_well_reverse(__dev_priv, __power_well, __domain) \
+	for_each_power_well_reverse(__dev_priv, __power_well)		        \
+		for_each_if(test_bit((__domain), (__power_well)->domains.bits))
+
+const char *
+intel_display_power_domain_str(enum intel_display_power_domain domain)
+{
+	switch (domain) {
+	case POWER_DOMAIN_DISPLAY_CORE:
+		return "DISPLAY_CORE";
+	case POWER_DOMAIN_PIPE_A:
+		return "PIPE_A";
+	case POWER_DOMAIN_PIPE_B:
+		return "PIPE_B";
+	case POWER_DOMAIN_PIPE_C:
+		return "PIPE_C";
+	case POWER_DOMAIN_PIPE_D:
+		return "PIPE_D";
+	case POWER_DOMAIN_PIPE_PANEL_FITTER_A:
+		return "PIPE_PANEL_FITTER_A";
+	case POWER_DOMAIN_PIPE_PANEL_FITTER_B:
+		return "PIPE_PANEL_FITTER_B";
+	case POWER_DOMAIN_PIPE_PANEL_FITTER_C:
+		return "PIPE_PANEL_FITTER_C";
+	case POWER_DOMAIN_PIPE_PANEL_FITTER_D:
+		return "PIPE_PANEL_FITTER_D";
+	case POWER_DOMAIN_TRANSCODER_A:
+		return "TRANSCODER_A";
+	case POWER_DOMAIN_TRANSCODER_B:
+		return "TRANSCODER_B";
+	case POWER_DOMAIN_TRANSCODER_C:
+		return "TRANSCODER_C";
+	case POWER_DOMAIN_TRANSCODER_D:
+		return "TRANSCODER_D";
+	case POWER_DOMAIN_TRANSCODER_EDP:
+		return "TRANSCODER_EDP";
+	case POWER_DOMAIN_TRANSCODER_DSI_A:
+		return "TRANSCODER_DSI_A";
+	case POWER_DOMAIN_TRANSCODER_DSI_C:
+		return "TRANSCODER_DSI_C";
+	case POWER_DOMAIN_TRANSCODER_VDSC_PW2:
+		return "TRANSCODER_VDSC_PW2";
+	case POWER_DOMAIN_PORT_DDI_LANES_A:
+		return "PORT_DDI_LANES_A";
+	case POWER_DOMAIN_PORT_DDI_LANES_B:
+		return "PORT_DDI_LANES_B";
+	case POWER_DOMAIN_PORT_DDI_LANES_C:
+		return "PORT_DDI_LANES_C";
+	case POWER_DOMAIN_PORT_DDI_LANES_D:
+		return "PORT_DDI_LANES_D";
+	case POWER_DOMAIN_PORT_DDI_LANES_E:
+		return "PORT_DDI_LANES_E";
+	case POWER_DOMAIN_PORT_DDI_LANES_F:
+		return "PORT_DDI_LANES_F";
+	case POWER_DOMAIN_PORT_DDI_LANES_TC1:
+		return "PORT_DDI_LANES_TC1";
+	case POWER_DOMAIN_PORT_DDI_LANES_TC2:
+		return "PORT_DDI_LANES_TC2";
+	case POWER_DOMAIN_PORT_DDI_LANES_TC3:
+		return "PORT_DDI_LANES_TC3";
+	case POWER_DOMAIN_PORT_DDI_LANES_TC4:
+		return "PORT_DDI_LANES_TC4";
+	case POWER_DOMAIN_PORT_DDI_LANES_TC5:
+		return "PORT_DDI_LANES_TC5";
+	case POWER_DOMAIN_PORT_DDI_LANES_TC6:
+		return "PORT_DDI_LANES_TC6";
+	case POWER_DOMAIN_PORT_DDI_IO_A:
+		return "PORT_DDI_IO_A";
+	case POWER_DOMAIN_PORT_DDI_IO_B:
+		return "PORT_DDI_IO_B";
+	case POWER_DOMAIN_PORT_DDI_IO_C:
+		return "PORT_DDI_IO_C";
+	case POWER_DOMAIN_PORT_DDI_IO_D:
+		return "PORT_DDI_IO_D";
+	case POWER_DOMAIN_PORT_DDI_IO_E:
+		return "PORT_DDI_IO_E";
+	case POWER_DOMAIN_PORT_DDI_IO_F:
+		return "PORT_DDI_IO_F";
+	case POWER_DOMAIN_PORT_DDI_IO_TC1:
+		return "PORT_DDI_IO_TC1";
+	case POWER_DOMAIN_PORT_DDI_IO_TC2:
+		return "PORT_DDI_IO_TC2";
+	case POWER_DOMAIN_PORT_DDI_IO_TC3:
+		return "PORT_DDI_IO_TC3";
+	case POWER_DOMAIN_PORT_DDI_IO_TC4:
+		return "PORT_DDI_IO_TC4";
+	case POWER_DOMAIN_PORT_DDI_IO_TC5:
+		return "PORT_DDI_IO_TC5";
+	case POWER_DOMAIN_PORT_DDI_IO_TC6:
+		return "PORT_DDI_IO_TC6";
+	case POWER_DOMAIN_PORT_DSI:
+		return "PORT_DSI";
+	case POWER_DOMAIN_PORT_CRT:
+		return "PORT_CRT";
+	case POWER_DOMAIN_PORT_OTHER:
+		return "PORT_OTHER";
+	case POWER_DOMAIN_VGA:
+		return "VGA";
+	case POWER_DOMAIN_AUDIO_MMIO:
+		return "AUDIO_MMIO";
+	case POWER_DOMAIN_AUDIO_PLAYBACK:
+		return "AUDIO_PLAYBACK";
+	case POWER_DOMAIN_AUX_A:
+		return "AUX_A";
+	case POWER_DOMAIN_AUX_B:
+		return "AUX_B";
+	case POWER_DOMAIN_AUX_C:
+		return "AUX_C";
+	case POWER_DOMAIN_AUX_D:
+		return "AUX_D";
+	case POWER_DOMAIN_AUX_E:
+		return "AUX_E";
+	case POWER_DOMAIN_AUX_F:
+		return "AUX_F";
+	case POWER_DOMAIN_AUX_USBC1:
+		return "AUX_USBC1";
+	case POWER_DOMAIN_AUX_USBC2:
+		return "AUX_USBC2";
+	case POWER_DOMAIN_AUX_USBC3:
+		return "AUX_USBC3";
+	case POWER_DOMAIN_AUX_USBC4:
+		return "AUX_USBC4";
+	case POWER_DOMAIN_AUX_USBC5:
+		return "AUX_USBC5";
+	case POWER_DOMAIN_AUX_USBC6:
+		return "AUX_USBC6";
+	case POWER_DOMAIN_AUX_IO_A:
+		return "AUX_IO_A";
+	case POWER_DOMAIN_AUX_TBT1:
+		return "AUX_TBT1";
+	case POWER_DOMAIN_AUX_TBT2:
+		return "AUX_TBT2";
+	case POWER_DOMAIN_AUX_TBT3:
+		return "AUX_TBT3";
+	case POWER_DOMAIN_AUX_TBT4:
+		return "AUX_TBT4";
+	case POWER_DOMAIN_AUX_TBT5:
+		return "AUX_TBT5";
+	case POWER_DOMAIN_AUX_TBT6:
+		return "AUX_TBT6";
+	case POWER_DOMAIN_GMBUS:
+		return "GMBUS";
+	case POWER_DOMAIN_INIT:
+		return "INIT";
+	case POWER_DOMAIN_MODESET:
+		return "MODESET";
+	case POWER_DOMAIN_GT_IRQ:
+		return "GT_IRQ";
+	case POWER_DOMAIN_DC_OFF:
+		return "DC_OFF";
+	case POWER_DOMAIN_TC_COLD_OFF:
+		return "TC_COLD_OFF";
+	default:
+		MISSING_CASE(domain);
+		return "?";
+	}
+}
+
+/**
+ * __intel_display_power_is_enabled - unlocked check for a power domain
+ * @dev_priv: i915 device instance
+ * @domain: power domain to check
+ *
+ * This is the unlocked version of intel_display_power_is_enabled() and should
+ * only be used from error capture and recovery code where deadlocks are
+ * possible.
+ *
+ * Returns:
+ * True when the power domain is enabled, false otherwise.
+ */
+bool __intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
+				      enum intel_display_power_domain domain)
+{
+	struct i915_power_well *power_well;
+	bool is_enabled;
+
+	if (dev_priv->runtime_pm.suspended)
+		return false;
+
+	is_enabled = true;
+
+	for_each_power_domain_well_reverse(dev_priv, power_well, domain) {
+		if (intel_power_well_is_always_on(power_well))
+			continue;
+
+		if (!intel_power_well_is_enabled_cached(power_well)) {
+			is_enabled = false;
+			break;
+		}
+	}
+
+	return is_enabled;
+}
+
+/**
+ * intel_display_power_is_enabled - check for a power domain
+ * @dev_priv: i915 device instance
+ * @domain: power domain to check
+ *
+ * This function can be used to check the hw power domain state. It is mostly
+ * used in hardware state readout functions. Everywhere else code should rely
+ * upon explicit power domain reference counting to ensure that the hardware
+ * block is powered up before accessing it.
+ *
+ * Callers must hold the relevant modesetting locks to ensure that concurrent
+ * threads can't disable the power well while the caller tries to read a few
+ * registers.
+ *
+ * Returns:
+ * True when the power domain is enabled, false otherwise.
+ */
+bool intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
+				    enum intel_display_power_domain domain)
+{
+	struct i915_power_domains *power_domains;
+	bool ret;
+
+	power_domains = &dev_priv->display.power.domains;
+
+	mutex_lock(&power_domains->lock);
+	ret = __intel_display_power_is_enabled(dev_priv, domain);
+	mutex_unlock(&power_domains->lock);
+
+	return ret;
+}
+
+static u32
+sanitize_target_dc_state(struct drm_i915_private *dev_priv,
+			 u32 target_dc_state)
+{
+	static const u32 states[] = {
+		DC_STATE_EN_UPTO_DC6,
+		DC_STATE_EN_UPTO_DC5,
+		DC_STATE_EN_DC3CO,
+		DC_STATE_DISABLE,
+	};
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(states) - 1; i++) {
+		if (target_dc_state != states[i])
+			continue;
+
+		if (dev_priv->display.dmc.allowed_dc_mask & target_dc_state)
+			break;
+
+		target_dc_state = states[i + 1];
+	}
+
+	return target_dc_state;
+}
+
+/**
+ * intel_display_power_set_target_dc_state - Set target dc state.
+ * @dev_priv: i915 device
+ * @state: state which needs to be set as target_dc_state.
+ *
+ * This function set the "DC off" power well target_dc_state,
+ * based upon this target_dc_stste, "DC off" power well will
+ * enable desired DC state.
+ */
+void intel_display_power_set_target_dc_state(struct drm_i915_private *dev_priv,
+					     u32 state)
+{
+	struct i915_power_well *power_well;
+	bool dc_off_enabled;
+	struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
+
+	mutex_lock(&power_domains->lock);
+	power_well = lookup_power_well(dev_priv, SKL_DISP_DC_OFF);
+
+	if (drm_WARN_ON(&dev_priv->drm, !power_well))
+		goto unlock;
+
+	state = sanitize_target_dc_state(dev_priv, state);
+
+	if (state == dev_priv->display.dmc.target_dc_state)
+		goto unlock;
+
+	dc_off_enabled = intel_power_well_is_enabled(dev_priv, power_well);
+	/*
+	 * If DC off power well is disabled, need to enable and disable the
+	 * DC off power well to effect target DC state.
+	 */
+	if (!dc_off_enabled)
+		intel_power_well_enable(dev_priv, power_well);
+
+	dev_priv->display.dmc.target_dc_state = state;
+
+	if (!dc_off_enabled)
+		intel_power_well_disable(dev_priv, power_well);
+
+unlock:
+	mutex_unlock(&power_domains->lock);
+}
+
+#define POWER_DOMAIN_MASK (GENMASK_ULL(POWER_DOMAIN_NUM - 1, 0))
+
+static void __async_put_domains_mask(struct i915_power_domains *power_domains,
+				     struct intel_power_domain_mask *mask)
+{
+	bitmap_or(mask->bits,
+		  power_domains->async_put_domains[0].bits,
+		  power_domains->async_put_domains[1].bits,
+		  POWER_DOMAIN_NUM);
+}
+
+#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
+
+static bool
+assert_async_put_domain_masks_disjoint(struct i915_power_domains *power_domains)
+{
+	struct drm_i915_private *i915 = container_of(power_domains,
+						     struct drm_i915_private,
+						     display.power.domains);
+
+	return !drm_WARN_ON(&i915->drm,
+			    bitmap_intersects(power_domains->async_put_domains[0].bits,
+					      power_domains->async_put_domains[1].bits,
+					      POWER_DOMAIN_NUM));
+}
+
+static bool
+__async_put_domains_state_ok(struct i915_power_domains *power_domains)
+{
+	struct drm_i915_private *i915 = container_of(power_domains,
+						     struct drm_i915_private,
+						     display.power.domains);
+	struct intel_power_domain_mask async_put_mask;
+	enum intel_display_power_domain domain;
+	bool err = false;
+
+	err |= !assert_async_put_domain_masks_disjoint(power_domains);
+	__async_put_domains_mask(power_domains, &async_put_mask);
+	err |= drm_WARN_ON(&i915->drm,
+			   !!power_domains->async_put_wakeref !=
+			   !bitmap_empty(async_put_mask.bits, POWER_DOMAIN_NUM));
+
+	for_each_power_domain(domain, &async_put_mask)
+		err |= drm_WARN_ON(&i915->drm,
+				   power_domains->domain_use_count[domain] != 1);
+
+	return !err;
+}
+
+static void print_power_domains(struct i915_power_domains *power_domains,
+				const char *prefix, struct intel_power_domain_mask *mask)
+{
+	struct drm_i915_private *i915 = container_of(power_domains,
+						     struct drm_i915_private,
+						     display.power.domains);
+	enum intel_display_power_domain domain;
+
+	drm_dbg(&i915->drm, "%s (%d):\n", prefix, bitmap_weight(mask->bits, POWER_DOMAIN_NUM));
+	for_each_power_domain(domain, mask)
+		drm_dbg(&i915->drm, "%s use_count %d\n",
+			intel_display_power_domain_str(domain),
+			power_domains->domain_use_count[domain]);
+}
+
+static void
+print_async_put_domains_state(struct i915_power_domains *power_domains)
+{
+	struct drm_i915_private *i915 = container_of(power_domains,
+						     struct drm_i915_private,
+						     display.power.domains);
+
+	drm_dbg(&i915->drm, "async_put_wakeref %u\n",
+		power_domains->async_put_wakeref);
+
+	print_power_domains(power_domains, "async_put_domains[0]",
+			    &power_domains->async_put_domains[0]);
+	print_power_domains(power_domains, "async_put_domains[1]",
+			    &power_domains->async_put_domains[1]);
+}
+
+static void
+verify_async_put_domains_state(struct i915_power_domains *power_domains)
+{
+	if (!__async_put_domains_state_ok(power_domains))
+		print_async_put_domains_state(power_domains);
+}
+
+#else
+
+static void
+assert_async_put_domain_masks_disjoint(struct i915_power_domains *power_domains)
+{
+}
+
+static void
+verify_async_put_domains_state(struct i915_power_domains *power_domains)
+{
+}
+
+#endif /* CONFIG_DRM_I915_DEBUG_RUNTIME_PM */
+
+static void async_put_domains_mask(struct i915_power_domains *power_domains,
+				   struct intel_power_domain_mask *mask)
+
+{
+	assert_async_put_domain_masks_disjoint(power_domains);
+
+	__async_put_domains_mask(power_domains, mask);
+}
+
+static void
+async_put_domains_clear_domain(struct i915_power_domains *power_domains,
+			       enum intel_display_power_domain domain)
+{
+	assert_async_put_domain_masks_disjoint(power_domains);
+
+	clear_bit(domain, power_domains->async_put_domains[0].bits);
+	clear_bit(domain, power_domains->async_put_domains[1].bits);
+}
+
+static bool
+intel_display_power_grab_async_put_ref(struct drm_i915_private *dev_priv,
+				       enum intel_display_power_domain domain)
+{
+	struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
+	struct intel_power_domain_mask async_put_mask;
+	bool ret = false;
+
+	async_put_domains_mask(power_domains, &async_put_mask);
+	if (!test_bit(domain, async_put_mask.bits))
+		goto out_verify;
+
+	async_put_domains_clear_domain(power_domains, domain);
+
+	ret = true;
+
+	async_put_domains_mask(power_domains, &async_put_mask);
+	if (!bitmap_empty(async_put_mask.bits, POWER_DOMAIN_NUM))
+		goto out_verify;
+
+	cancel_delayed_work(&power_domains->async_put_work);
+	intel_runtime_pm_put_raw(&dev_priv->runtime_pm,
+				 fetch_and_zero(&power_domains->async_put_wakeref));
+out_verify:
+	verify_async_put_domains_state(power_domains);
+
+	return ret;
+}
+
+static void
+__intel_display_power_get_domain(struct drm_i915_private *dev_priv,
+				 enum intel_display_power_domain domain)
+{
+	struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
+	struct i915_power_well *power_well;
+
+	if (intel_display_power_grab_async_put_ref(dev_priv, domain))
+		return;
+
+	for_each_power_domain_well(dev_priv, power_well, domain)
+		intel_power_well_get(dev_priv, power_well);
+
+	power_domains->domain_use_count[domain]++;
+}
+
+/**
+ * intel_display_power_get - grab a power domain reference
+ * @dev_priv: i915 device instance
+ * @domain: power domain to reference
+ *
+ * This function grabs a power domain reference for @domain and ensures that the
+ * power domain and all its parents are powered up. Therefore users should only
+ * grab a reference to the innermost power domain they need.
+ *
+ * Any power domain reference obtained by this function must have a symmetric
+ * call to intel_display_power_put() to release the reference again.
+ */
+intel_wakeref_t intel_display_power_get(struct drm_i915_private *dev_priv,
+					enum intel_display_power_domain domain)
+{
+	struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
+	intel_wakeref_t wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
+
+	mutex_lock(&power_domains->lock);
+	__intel_display_power_get_domain(dev_priv, domain);
+	mutex_unlock(&power_domains->lock);
+
+	return wakeref;
+}
+
+/**
+ * intel_display_power_get_if_enabled - grab a reference for an enabled display power domain
+ * @dev_priv: i915 device instance
+ * @domain: power domain to reference
+ *
+ * This function grabs a power domain reference for @domain and ensures that the
+ * power domain and all its parents are powered up. Therefore users should only
+ * grab a reference to the innermost power domain they need.
+ *
+ * Any power domain reference obtained by this function must have a symmetric
+ * call to intel_display_power_put() to release the reference again.
+ */
+intel_wakeref_t
+intel_display_power_get_if_enabled(struct drm_i915_private *dev_priv,
+				   enum intel_display_power_domain domain)
+{
+	struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
+	intel_wakeref_t wakeref;
+	bool is_enabled;
+
+	wakeref = intel_runtime_pm_get_if_in_use(&dev_priv->runtime_pm);
+	if (!wakeref)
+		return false;
+
+	mutex_lock(&power_domains->lock);
+
+	if (__intel_display_power_is_enabled(dev_priv, domain)) {
+		__intel_display_power_get_domain(dev_priv, domain);
+		is_enabled = true;
+	} else {
+		is_enabled = false;
+	}
+
+	mutex_unlock(&power_domains->lock);
+
+	if (!is_enabled) {
+		intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
+		wakeref = 0;
+	}
+
+	return wakeref;
+}
+
+static void
+__intel_display_power_put_domain(struct drm_i915_private *dev_priv,
+				 enum intel_display_power_domain domain)
+{
+	struct i915_power_domains *power_domains;
+	struct i915_power_well *power_well;
+	const char *name = intel_display_power_domain_str(domain);
+	struct intel_power_domain_mask async_put_mask;
+
+	power_domains = &dev_priv->display.power.domains;
+
+	drm_WARN(&dev_priv->drm, !power_domains->domain_use_count[domain],
+		 "Use count on domain %s is already zero\n",
+		 name);
+	async_put_domains_mask(power_domains, &async_put_mask);
+	drm_WARN(&dev_priv->drm,
+		 test_bit(domain, async_put_mask.bits),
+		 "Async disabling of domain %s is pending\n",
+		 name);
+
+	power_domains->domain_use_count[domain]--;
+
+	for_each_power_domain_well_reverse(dev_priv, power_well, domain)
+		intel_power_well_put(dev_priv, power_well);
+}
+
+static void __intel_display_power_put(struct drm_i915_private *dev_priv,
+				      enum intel_display_power_domain domain)
+{
+	struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
+
+	mutex_lock(&power_domains->lock);
+	__intel_display_power_put_domain(dev_priv, domain);
+	mutex_unlock(&power_domains->lock);
+}
+
+static void
+queue_async_put_domains_work(struct i915_power_domains *power_domains,
+			     intel_wakeref_t wakeref)
+{
+	struct drm_i915_private *i915 = container_of(power_domains,
+						     struct drm_i915_private,
+						     display.power.domains);
+	drm_WARN_ON(&i915->drm, power_domains->async_put_wakeref);
+	power_domains->async_put_wakeref = wakeref;
+	drm_WARN_ON(&i915->drm, !queue_delayed_work(system_unbound_wq,
+						    &power_domains->async_put_work,
+						    msecs_to_jiffies(100)));
+}
+
+static void
+release_async_put_domains(struct i915_power_domains *power_domains,
+			  struct intel_power_domain_mask *mask)
+{
+	struct drm_i915_private *dev_priv =
+		container_of(power_domains, struct drm_i915_private,
+			     display.power.domains);
+	struct intel_runtime_pm *rpm = &dev_priv->runtime_pm;
+	enum intel_display_power_domain domain;
+	intel_wakeref_t wakeref;
+
+	/*
+	 * The caller must hold already raw wakeref, upgrade that to a proper
+	 * wakeref to make the state checker happy about the HW access during
+	 * power well disabling.
+	 */
+	assert_rpm_raw_wakeref_held(rpm);
+	wakeref = intel_runtime_pm_get(rpm);
+
+	for_each_power_domain(domain, mask) {
+		/* Clear before put, so put's sanity check is happy. */
+		async_put_domains_clear_domain(power_domains, domain);
+		__intel_display_power_put_domain(dev_priv, domain);
+	}
+
+	intel_runtime_pm_put(rpm, wakeref);
+}
+
+static void
+intel_display_power_put_async_work(struct work_struct *work)
+{
+	struct drm_i915_private *dev_priv =
+		container_of(work, struct drm_i915_private,
+			     display.power.domains.async_put_work.work);
+	struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
+	struct intel_runtime_pm *rpm = &dev_priv->runtime_pm;
+	intel_wakeref_t new_work_wakeref = intel_runtime_pm_get_raw(rpm);
+	intel_wakeref_t old_work_wakeref = 0;
+
+	mutex_lock(&power_domains->lock);
+
+	/*
+	 * Bail out if all the domain refs pending to be released were grabbed
+	 * by subsequent gets or a flush_work.
+	 */
+	old_work_wakeref = fetch_and_zero(&power_domains->async_put_wakeref);
+	if (!old_work_wakeref)
+		goto out_verify;
+
+	release_async_put_domains(power_domains,
+				  &power_domains->async_put_domains[0]);
+
+	/* Requeue the work if more domains were async put meanwhile. */
+	if (!bitmap_empty(power_domains->async_put_domains[1].bits, POWER_DOMAIN_NUM)) {
+		bitmap_copy(power_domains->async_put_domains[0].bits,
+			    power_domains->async_put_domains[1].bits,
+			    POWER_DOMAIN_NUM);
+		bitmap_zero(power_domains->async_put_domains[1].bits,
+			    POWER_DOMAIN_NUM);
+		queue_async_put_domains_work(power_domains,
+					     fetch_and_zero(&new_work_wakeref));
+	} else {
+		/*
+		 * Cancel the work that got queued after this one got dequeued,
+		 * since here we released the corresponding async-put reference.
+		 */
+		cancel_delayed_work(&power_domains->async_put_work);
+	}
+
+out_verify:
+	verify_async_put_domains_state(power_domains);
+
+	mutex_unlock(&power_domains->lock);
+
+	if (old_work_wakeref)
+		intel_runtime_pm_put_raw(rpm, old_work_wakeref);
+	if (new_work_wakeref)
+		intel_runtime_pm_put_raw(rpm, new_work_wakeref);
+}
+
+/**
+ * intel_display_power_put_async - release a power domain reference asynchronously
+ * @i915: i915 device instance
+ * @domain: power domain to reference
+ * @wakeref: wakeref acquired for the reference that is being released
+ *
+ * This function drops the power domain reference obtained by
+ * intel_display_power_get*() and schedules a work to power down the
+ * corresponding hardware block if this is the last reference.
+ */
+void __intel_display_power_put_async(struct drm_i915_private *i915,
+				     enum intel_display_power_domain domain,
+				     intel_wakeref_t wakeref)
+{
+	struct i915_power_domains *power_domains = &i915->display.power.domains;
+	struct intel_runtime_pm *rpm = &i915->runtime_pm;
+	intel_wakeref_t work_wakeref = intel_runtime_pm_get_raw(rpm);
+
+	mutex_lock(&power_domains->lock);
+
+	if (power_domains->domain_use_count[domain] > 1) {
+		__intel_display_power_put_domain(i915, domain);
+
+		goto out_verify;
+	}
+
+	drm_WARN_ON(&i915->drm, power_domains->domain_use_count[domain] != 1);
+
+	/* Let a pending work requeue itself or queue a new one. */
+	if (power_domains->async_put_wakeref) {
+		set_bit(domain, power_domains->async_put_domains[1].bits);
+	} else {
+		set_bit(domain, power_domains->async_put_domains[0].bits);
+		queue_async_put_domains_work(power_domains,
+					     fetch_and_zero(&work_wakeref));
+	}
+
+out_verify:
+	verify_async_put_domains_state(power_domains);
+
+	mutex_unlock(&power_domains->lock);
+
+	if (work_wakeref)
+		intel_runtime_pm_put_raw(rpm, work_wakeref);
+
+	intel_runtime_pm_put(rpm, wakeref);
+}
+
+/**
+ * intel_display_power_flush_work - flushes the async display power disabling work
+ * @i915: i915 device instance
+ *
+ * Flushes any pending work that was scheduled by a preceding
+ * intel_display_power_put_async() call, completing the disabling of the
+ * corresponding power domains.
+ *
+ * Note that the work handler function may still be running after this
+ * function returns; to ensure that the work handler isn't running use
+ * intel_display_power_flush_work_sync() instead.
+ */
+void intel_display_power_flush_work(struct drm_i915_private *i915)
+{
+	struct i915_power_domains *power_domains = &i915->display.power.domains;
+	struct intel_power_domain_mask async_put_mask;
+	intel_wakeref_t work_wakeref;
+
+	mutex_lock(&power_domains->lock);
+
+	work_wakeref = fetch_and_zero(&power_domains->async_put_wakeref);
+	if (!work_wakeref)
+		goto out_verify;
+
+	async_put_domains_mask(power_domains, &async_put_mask);
+	release_async_put_domains(power_domains, &async_put_mask);
+	cancel_delayed_work(&power_domains->async_put_work);
+
+out_verify:
+	verify_async_put_domains_state(power_domains);
+
+	mutex_unlock(&power_domains->lock);
+
+	if (work_wakeref)
+		intel_runtime_pm_put_raw(&i915->runtime_pm, work_wakeref);
+}
+
+/**
+ * intel_display_power_flush_work_sync - flushes and syncs the async display power disabling work
+ * @i915: i915 device instance
+ *
+ * Like intel_display_power_flush_work(), but also ensure that the work
+ * handler function is not running any more when this function returns.
+ */
+static void
+intel_display_power_flush_work_sync(struct drm_i915_private *i915)
+{
+	struct i915_power_domains *power_domains = &i915->display.power.domains;
+
+	intel_display_power_flush_work(i915);
+	cancel_delayed_work_sync(&power_domains->async_put_work);
+
+	verify_async_put_domains_state(power_domains);
+
+	drm_WARN_ON(&i915->drm, power_domains->async_put_wakeref);
+}
+
+#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
+/**
+ * intel_display_power_put - release a power domain reference
+ * @dev_priv: i915 device instance
+ * @domain: power domain to reference
+ * @wakeref: wakeref acquired for the reference that is being released
+ *
+ * This function drops the power domain reference obtained by
+ * intel_display_power_get() and might power down the corresponding hardware
+ * block right away if this is the last reference.
+ */
+void intel_display_power_put(struct drm_i915_private *dev_priv,
+			     enum intel_display_power_domain domain,
+			     intel_wakeref_t wakeref)
+{
+	__intel_display_power_put(dev_priv, domain);
+	intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
+}
+#else
+/**
+ * intel_display_power_put_unchecked - release an unchecked power domain reference
+ * @dev_priv: i915 device instance
+ * @domain: power domain to reference
+ *
+ * This function drops the power domain reference obtained by
+ * intel_display_power_get() and might power down the corresponding hardware
+ * block right away if this is the last reference.
+ *
+ * This function is only for the power domain code's internal use to suppress wakeref
+ * tracking when the correspondig debug kconfig option is disabled, should not
+ * be used otherwise.
+ */
+void intel_display_power_put_unchecked(struct drm_i915_private *dev_priv,
+				       enum intel_display_power_domain domain)
+{
+	__intel_display_power_put(dev_priv, domain);
+	intel_runtime_pm_put_unchecked(&dev_priv->runtime_pm);
+}
+#endif
+
+void
+intel_display_power_get_in_set(struct drm_i915_private *i915,
+			       struct intel_display_power_domain_set *power_domain_set,
+			       enum intel_display_power_domain domain)
+{
+	intel_wakeref_t __maybe_unused wf;
+
+	drm_WARN_ON(&i915->drm, test_bit(domain, power_domain_set->mask.bits));
+
+	wf = intel_display_power_get(i915, domain);
+#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
+	power_domain_set->wakerefs[domain] = wf;
+#endif
+	set_bit(domain, power_domain_set->mask.bits);
+}
+
+bool
+intel_display_power_get_in_set_if_enabled(struct drm_i915_private *i915,
+					  struct intel_display_power_domain_set *power_domain_set,
+					  enum intel_display_power_domain domain)
+{
+	intel_wakeref_t wf;
+
+	drm_WARN_ON(&i915->drm, test_bit(domain, power_domain_set->mask.bits));
+
+	wf = intel_display_power_get_if_enabled(i915, domain);
+	if (!wf)
+		return false;
+
+#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
+	power_domain_set->wakerefs[domain] = wf;
+#endif
+	set_bit(domain, power_domain_set->mask.bits);
+
+	return true;
+}
+
+void
+intel_display_power_put_mask_in_set(struct drm_i915_private *i915,
+				    struct intel_display_power_domain_set *power_domain_set,
+				    struct intel_power_domain_mask *mask)
+{
+	enum intel_display_power_domain domain;
+
+	drm_WARN_ON(&i915->drm,
+		    !bitmap_subset(mask->bits, power_domain_set->mask.bits, POWER_DOMAIN_NUM));
+
+	for_each_power_domain(domain, mask) {
+		intel_wakeref_t __maybe_unused wf = -1;
+
+#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
+		wf = fetch_and_zero(&power_domain_set->wakerefs[domain]);
+#endif
+		intel_display_power_put(i915, domain, wf);
+		clear_bit(domain, power_domain_set->mask.bits);
+	}
+}
+
+static int
+sanitize_disable_power_well_option(const struct drm_i915_private *dev_priv,
+				   int disable_power_well)
+{
+	if (disable_power_well >= 0)
+		return !!disable_power_well;
+
+	return 1;
+}
+
+static u32 get_allowed_dc_mask(const struct drm_i915_private *dev_priv,
+			       int enable_dc)
+{
+	u32 mask;
+	int requested_dc;
+	int max_dc;
+
+	if (!HAS_DISPLAY(dev_priv))
+		return 0;
+
+	if (IS_DG2(dev_priv))
+		max_dc = 1;
+	else if (IS_DG1(dev_priv))
+		max_dc = 3;
+	else if (DISPLAY_VER(dev_priv) >= 12)
+		max_dc = 4;
+	else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
+		max_dc = 1;
+	else if (DISPLAY_VER(dev_priv) >= 9)
+		max_dc = 2;
+	else
+		max_dc = 0;
+
+	/*
+	 * DC9 has a separate HW flow from the rest of the DC states,
+	 * not depending on the DMC firmware. It's needed by system
+	 * suspend/resume, so allow it unconditionally.
+	 */
+	mask = IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv) ||
+		DISPLAY_VER(dev_priv) >= 11 ?
+	       DC_STATE_EN_DC9 : 0;
+
+	if (!dev_priv->params.disable_power_well)
+		max_dc = 0;
+
+	if (enable_dc >= 0 && enable_dc <= max_dc) {
+		requested_dc = enable_dc;
+	} else if (enable_dc == -1) {
+		requested_dc = max_dc;
+	} else if (enable_dc > max_dc && enable_dc <= 4) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Adjusting requested max DC state (%d->%d)\n",
+			    enable_dc, max_dc);
+		requested_dc = max_dc;
+	} else {
+		drm_err(&dev_priv->drm,
+			"Unexpected value for enable_dc (%d)\n", enable_dc);
+		requested_dc = max_dc;
+	}
+
+	switch (requested_dc) {
+	case 4:
+		mask |= DC_STATE_EN_DC3CO | DC_STATE_EN_UPTO_DC6;
+		break;
+	case 3:
+		mask |= DC_STATE_EN_DC3CO | DC_STATE_EN_UPTO_DC5;
+		break;
+	case 2:
+		mask |= DC_STATE_EN_UPTO_DC6;
+		break;
+	case 1:
+		mask |= DC_STATE_EN_UPTO_DC5;
+		break;
+	}
+
+	drm_dbg_kms(&dev_priv->drm, "Allowed DC state mask %02x\n", mask);
+
+	return mask;
+}
+
+/**
+ * intel_power_domains_init - initializes the power domain structures
+ * @dev_priv: i915 device instance
+ *
+ * Initializes the power domain structures for @dev_priv depending upon the
+ * supported platform.
+ */
+int intel_power_domains_init(struct drm_i915_private *dev_priv)
+{
+	struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
+
+	dev_priv->params.disable_power_well =
+		sanitize_disable_power_well_option(dev_priv,
+						   dev_priv->params.disable_power_well);
+	dev_priv->display.dmc.allowed_dc_mask =
+		get_allowed_dc_mask(dev_priv, dev_priv->params.enable_dc);
+
+	dev_priv->display.dmc.target_dc_state =
+		sanitize_target_dc_state(dev_priv, DC_STATE_EN_UPTO_DC6);
+
+	mutex_init(&power_domains->lock);
+
+	INIT_DELAYED_WORK(&power_domains->async_put_work,
+			  intel_display_power_put_async_work);
+
+	return intel_display_power_map_init(power_domains);
+}
+
+/**
+ * intel_power_domains_cleanup - clean up power domains resources
+ * @dev_priv: i915 device instance
+ *
+ * Release any resources acquired by intel_power_domains_init()
+ */
+void intel_power_domains_cleanup(struct drm_i915_private *dev_priv)
+{
+	intel_display_power_map_cleanup(&dev_priv->display.power.domains);
+}
+
+static void intel_power_domains_sync_hw(struct drm_i915_private *dev_priv)
+{
+	struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
+	struct i915_power_well *power_well;
+
+	mutex_lock(&power_domains->lock);
+	for_each_power_well(dev_priv, power_well)
+		intel_power_well_sync_hw(dev_priv, power_well);
+	mutex_unlock(&power_domains->lock);
+}
+
+static void gen9_dbuf_slice_set(struct drm_i915_private *dev_priv,
+				enum dbuf_slice slice, bool enable)
+{
+	i915_reg_t reg = DBUF_CTL_S(slice);
+	bool state;
+
+	intel_de_rmw(dev_priv, reg, DBUF_POWER_REQUEST,
+		     enable ? DBUF_POWER_REQUEST : 0);
+	intel_de_posting_read(dev_priv, reg);
+	udelay(10);
+
+	state = intel_de_read(dev_priv, reg) & DBUF_POWER_STATE;
+	drm_WARN(&dev_priv->drm, enable != state,
+		 "DBuf slice %d power %s timeout!\n",
+		 slice, str_enable_disable(enable));
+}
+
+void gen9_dbuf_slices_update(struct drm_i915_private *dev_priv,
+			     u8 req_slices)
+{
+	struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
+	u8 slice_mask = INTEL_INFO(dev_priv)->display.dbuf.slice_mask;
+	enum dbuf_slice slice;
+
+	drm_WARN(&dev_priv->drm, req_slices & ~slice_mask,
+		 "Invalid set of dbuf slices (0x%x) requested (total dbuf slices 0x%x)\n",
+		 req_slices, slice_mask);
+
+	drm_dbg_kms(&dev_priv->drm, "Updating dbuf slices to 0x%x\n",
+		    req_slices);
+
+	/*
+	 * Might be running this in parallel to gen9_dc_off_power_well_enable
+	 * being called from intel_dp_detect for instance,
+	 * which causes assertion triggered by race condition,
+	 * as gen9_assert_dbuf_enabled might preempt this when registers
+	 * were already updated, while dev_priv was not.
+	 */
+	mutex_lock(&power_domains->lock);
+
+	for_each_dbuf_slice(dev_priv, slice)
+		gen9_dbuf_slice_set(dev_priv, slice, req_slices & BIT(slice));
+
+	dev_priv->display.dbuf.enabled_slices = req_slices;
+
+	mutex_unlock(&power_domains->lock);
+}
+
+static void gen9_dbuf_enable(struct drm_i915_private *dev_priv)
+{
+	dev_priv->display.dbuf.enabled_slices =
+		intel_enabled_dbuf_slices_mask(dev_priv);
+
+	/*
+	 * Just power up at least 1 slice, we will
+	 * figure out later which slices we have and what we need.
+	 */
+	gen9_dbuf_slices_update(dev_priv, BIT(DBUF_S1) |
+				dev_priv->display.dbuf.enabled_slices);
+}
+
+static void gen9_dbuf_disable(struct drm_i915_private *dev_priv)
+{
+	gen9_dbuf_slices_update(dev_priv, 0);
+}
+
+static void gen12_dbuf_slices_config(struct drm_i915_private *dev_priv)
+{
+	enum dbuf_slice slice;
+
+	if (IS_ALDERLAKE_P(dev_priv))
+		return;
+
+	for_each_dbuf_slice(dev_priv, slice)
+		intel_de_rmw(dev_priv, DBUF_CTL_S(slice),
+			     DBUF_TRACKER_STATE_SERVICE_MASK,
+			     DBUF_TRACKER_STATE_SERVICE(8));
+}
+
+static void icl_mbus_init(struct drm_i915_private *dev_priv)
+{
+	unsigned long abox_regs = INTEL_INFO(dev_priv)->display.abox_mask;
+	u32 mask, val, i;
+
+	if (IS_ALDERLAKE_P(dev_priv) || DISPLAY_VER(dev_priv) >= 14)
+		return;
+
+	mask = MBUS_ABOX_BT_CREDIT_POOL1_MASK |
+		MBUS_ABOX_BT_CREDIT_POOL2_MASK |
+		MBUS_ABOX_B_CREDIT_MASK |
+		MBUS_ABOX_BW_CREDIT_MASK;
+	val = MBUS_ABOX_BT_CREDIT_POOL1(16) |
+		MBUS_ABOX_BT_CREDIT_POOL2(16) |
+		MBUS_ABOX_B_CREDIT(1) |
+		MBUS_ABOX_BW_CREDIT(1);
+
+	/*
+	 * gen12 platforms that use abox1 and abox2 for pixel data reads still
+	 * expect us to program the abox_ctl0 register as well, even though
+	 * we don't have to program other instance-0 registers like BW_BUDDY.
+	 */
+	if (DISPLAY_VER(dev_priv) == 12)
+		abox_regs |= BIT(0);
+
+	for_each_set_bit(i, &abox_regs, sizeof(abox_regs))
+		intel_de_rmw(dev_priv, MBUS_ABOX_CTL(i), mask, val);
+}
+
+static void hsw_assert_cdclk(struct drm_i915_private *dev_priv)
+{
+	u32 val = intel_de_read(dev_priv, LCPLL_CTL);
+
+	/*
+	 * The LCPLL register should be turned on by the BIOS. For now
+	 * let's just check its state and print errors in case
+	 * something is wrong.  Don't even try to turn it on.
+	 */
+
+	if (val & LCPLL_CD_SOURCE_FCLK)
+		drm_err(&dev_priv->drm, "CDCLK source is not LCPLL\n");
+
+	if (val & LCPLL_PLL_DISABLE)
+		drm_err(&dev_priv->drm, "LCPLL is disabled\n");
+
+	if ((val & LCPLL_REF_MASK) != LCPLL_REF_NON_SSC)
+		drm_err(&dev_priv->drm, "LCPLL not using non-SSC reference\n");
+}
+
+static void assert_can_disable_lcpll(struct drm_i915_private *dev_priv)
+{
+	struct drm_device *dev = &dev_priv->drm;
+	struct intel_crtc *crtc;
+
+	for_each_intel_crtc(dev, crtc)
+		I915_STATE_WARN(crtc->active, "CRTC for pipe %c enabled\n",
+				pipe_name(crtc->pipe));
+
+	I915_STATE_WARN(intel_de_read(dev_priv, HSW_PWR_WELL_CTL2),
+			"Display power well on\n");
+	I915_STATE_WARN(intel_de_read(dev_priv, SPLL_CTL) & SPLL_PLL_ENABLE,
+			"SPLL enabled\n");
+	I915_STATE_WARN(intel_de_read(dev_priv, WRPLL_CTL(0)) & WRPLL_PLL_ENABLE,
+			"WRPLL1 enabled\n");
+	I915_STATE_WARN(intel_de_read(dev_priv, WRPLL_CTL(1)) & WRPLL_PLL_ENABLE,
+			"WRPLL2 enabled\n");
+	I915_STATE_WARN(intel_de_read(dev_priv, PP_STATUS(0)) & PP_ON,
+			"Panel power on\n");
+	I915_STATE_WARN(intel_de_read(dev_priv, BLC_PWM_CPU_CTL2) & BLM_PWM_ENABLE,
+			"CPU PWM1 enabled\n");
+	if (IS_HASWELL(dev_priv))
+		I915_STATE_WARN(intel_de_read(dev_priv, HSW_BLC_PWM2_CTL) & BLM_PWM_ENABLE,
+				"CPU PWM2 enabled\n");
+	I915_STATE_WARN(intel_de_read(dev_priv, BLC_PWM_PCH_CTL1) & BLM_PCH_PWM_ENABLE,
+			"PCH PWM1 enabled\n");
+	I915_STATE_WARN(intel_de_read(dev_priv, UTIL_PIN_CTL) & UTIL_PIN_ENABLE,
+			"Utility pin enabled\n");
+	I915_STATE_WARN(intel_de_read(dev_priv, PCH_GTC_CTL) & PCH_GTC_ENABLE,
+			"PCH GTC enabled\n");
+
+	/*
+	 * In theory we can still leave IRQs enabled, as long as only the HPD
+	 * interrupts remain enabled. We used to check for that, but since it's
+	 * gen-specific and since we only disable LCPLL after we fully disable
+	 * the interrupts, the check below should be enough.
+	 */
+	I915_STATE_WARN(intel_irqs_enabled(dev_priv), "IRQs enabled\n");
+}
+
+static u32 hsw_read_dcomp(struct drm_i915_private *dev_priv)
+{
+	if (IS_HASWELL(dev_priv))
+		return intel_de_read(dev_priv, D_COMP_HSW);
+	else
+		return intel_de_read(dev_priv, D_COMP_BDW);
+}
+
+static void hsw_write_dcomp(struct drm_i915_private *dev_priv, u32 val)
+{
+	if (IS_HASWELL(dev_priv)) {
+		if (snb_pcode_write(&dev_priv->uncore, GEN6_PCODE_WRITE_D_COMP, val))
+			drm_dbg_kms(&dev_priv->drm,
+				    "Failed to write to D_COMP\n");
+	} else {
+		intel_de_write(dev_priv, D_COMP_BDW, val);
+		intel_de_posting_read(dev_priv, D_COMP_BDW);
+	}
+}
+
+/*
+ * This function implements pieces of two sequences from BSpec:
+ * - Sequence for display software to disable LCPLL
+ * - Sequence for display software to allow package C8+
+ * The steps implemented here are just the steps that actually touch the LCPLL
+ * register. Callers should take care of disabling all the display engine
+ * functions, doing the mode unset, fixing interrupts, etc.
+ */
+static void hsw_disable_lcpll(struct drm_i915_private *dev_priv,
+			      bool switch_to_fclk, bool allow_power_down)
+{
+	u32 val;
+
+	assert_can_disable_lcpll(dev_priv);
+
+	val = intel_de_read(dev_priv, LCPLL_CTL);
+
+	if (switch_to_fclk) {
+		val |= LCPLL_CD_SOURCE_FCLK;
+		intel_de_write(dev_priv, LCPLL_CTL, val);
+
+		if (wait_for_us(intel_de_read(dev_priv, LCPLL_CTL) &
+				LCPLL_CD_SOURCE_FCLK_DONE, 1))
+			drm_err(&dev_priv->drm, "Switching to FCLK failed\n");
+
+		val = intel_de_read(dev_priv, LCPLL_CTL);
+	}
+
+	val |= LCPLL_PLL_DISABLE;
+	intel_de_write(dev_priv, LCPLL_CTL, val);
+	intel_de_posting_read(dev_priv, LCPLL_CTL);
+
+	if (intel_de_wait_for_clear(dev_priv, LCPLL_CTL, LCPLL_PLL_LOCK, 1))
+		drm_err(&dev_priv->drm, "LCPLL still locked\n");
+
+	val = hsw_read_dcomp(dev_priv);
+	val |= D_COMP_COMP_DISABLE;
+	hsw_write_dcomp(dev_priv, val);
+	ndelay(100);
+
+	if (wait_for((hsw_read_dcomp(dev_priv) &
+		      D_COMP_RCOMP_IN_PROGRESS) == 0, 1))
+		drm_err(&dev_priv->drm, "D_COMP RCOMP still in progress\n");
+
+	if (allow_power_down) {
+		val = intel_de_read(dev_priv, LCPLL_CTL);
+		val |= LCPLL_POWER_DOWN_ALLOW;
+		intel_de_write(dev_priv, LCPLL_CTL, val);
+		intel_de_posting_read(dev_priv, LCPLL_CTL);
+	}
+}
+
+/*
+ * Fully restores LCPLL, disallowing power down and switching back to LCPLL
+ * source.
+ */
+static void hsw_restore_lcpll(struct drm_i915_private *dev_priv)
+{
+	u32 val;
+
+	val = intel_de_read(dev_priv, LCPLL_CTL);
+
+	if ((val & (LCPLL_PLL_LOCK | LCPLL_PLL_DISABLE | LCPLL_CD_SOURCE_FCLK |
+		    LCPLL_POWER_DOWN_ALLOW)) == LCPLL_PLL_LOCK)
+		return;
+
+	/*
+	 * Make sure we're not on PC8 state before disabling PC8, otherwise
+	 * we'll hang the machine. To prevent PC8 state, just enable force_wake.
+	 */
+	intel_uncore_forcewake_get(&dev_priv->uncore, FORCEWAKE_ALL);
+
+	if (val & LCPLL_POWER_DOWN_ALLOW) {
+		val &= ~LCPLL_POWER_DOWN_ALLOW;
+		intel_de_write(dev_priv, LCPLL_CTL, val);
+		intel_de_posting_read(dev_priv, LCPLL_CTL);
+	}
+
+	val = hsw_read_dcomp(dev_priv);
+	val |= D_COMP_COMP_FORCE;
+	val &= ~D_COMP_COMP_DISABLE;
+	hsw_write_dcomp(dev_priv, val);
+
+	val = intel_de_read(dev_priv, LCPLL_CTL);
+	val &= ~LCPLL_PLL_DISABLE;
+	intel_de_write(dev_priv, LCPLL_CTL, val);
+
+	if (intel_de_wait_for_set(dev_priv, LCPLL_CTL, LCPLL_PLL_LOCK, 5))
+		drm_err(&dev_priv->drm, "LCPLL not locked yet\n");
+
+	if (val & LCPLL_CD_SOURCE_FCLK) {
+		val = intel_de_read(dev_priv, LCPLL_CTL);
+		val &= ~LCPLL_CD_SOURCE_FCLK;
+		intel_de_write(dev_priv, LCPLL_CTL, val);
+
+		if (wait_for_us((intel_de_read(dev_priv, LCPLL_CTL) &
+				 LCPLL_CD_SOURCE_FCLK_DONE) == 0, 1))
+			drm_err(&dev_priv->drm,
+				"Switching back to LCPLL failed\n");
+	}
+
+	intel_uncore_forcewake_put(&dev_priv->uncore, FORCEWAKE_ALL);
+
+	intel_update_cdclk(dev_priv);
+	intel_cdclk_dump_config(dev_priv, &dev_priv->display.cdclk.hw, "Current CDCLK");
+}
+
+/*
+ * Package states C8 and deeper are really deep PC states that can only be
+ * reached when all the devices on the system allow it, so even if the graphics
+ * device allows PC8+, it doesn't mean the system will actually get to these
+ * states. Our driver only allows PC8+ when going into runtime PM.
+ *
+ * The requirements for PC8+ are that all the outputs are disabled, the power
+ * well is disabled and most interrupts are disabled, and these are also
+ * requirements for runtime PM. When these conditions are met, we manually do
+ * the other conditions: disable the interrupts, clocks and switch LCPLL refclk
+ * to Fclk. If we're in PC8+ and we get an non-hotplug interrupt, we can hard
+ * hang the machine.
+ *
+ * When we really reach PC8 or deeper states (not just when we allow it) we lose
+ * the state of some registers, so when we come back from PC8+ we need to
+ * restore this state. We don't get into PC8+ if we're not in RC6, so we don't
+ * need to take care of the registers kept by RC6. Notice that this happens even
+ * if we don't put the device in PCI D3 state (which is what currently happens
+ * because of the runtime PM support).
+ *
+ * For more, read "Display Sequences for Package C8" on the hardware
+ * documentation.
+ */
+static void hsw_enable_pc8(struct drm_i915_private *dev_priv)
+{
+	u32 val;
+
+	drm_dbg_kms(&dev_priv->drm, "Enabling package C8+\n");
+
+	if (HAS_PCH_LPT_LP(dev_priv)) {
+		val = intel_de_read(dev_priv, SOUTH_DSPCLK_GATE_D);
+		val &= ~PCH_LP_PARTITION_LEVEL_DISABLE;
+		intel_de_write(dev_priv, SOUTH_DSPCLK_GATE_D, val);
+	}
+
+	lpt_disable_clkout_dp(dev_priv);
+	hsw_disable_lcpll(dev_priv, true, true);
+}
+
+static void hsw_disable_pc8(struct drm_i915_private *dev_priv)
+{
+	u32 val;
+
+	drm_dbg_kms(&dev_priv->drm, "Disabling package C8+\n");
+
+	hsw_restore_lcpll(dev_priv);
+	intel_init_pch_refclk(dev_priv);
+
+	if (HAS_PCH_LPT_LP(dev_priv)) {
+		val = intel_de_read(dev_priv, SOUTH_DSPCLK_GATE_D);
+		val |= PCH_LP_PARTITION_LEVEL_DISABLE;
+		intel_de_write(dev_priv, SOUTH_DSPCLK_GATE_D, val);
+	}
+}
+
+static void intel_pch_reset_handshake(struct drm_i915_private *dev_priv,
+				      bool enable)
+{
+	i915_reg_t reg;
+	u32 reset_bits, val;
+
+	if (IS_IVYBRIDGE(dev_priv)) {
+		reg = GEN7_MSG_CTL;
+		reset_bits = WAIT_FOR_PCH_FLR_ACK | WAIT_FOR_PCH_RESET_ACK;
+	} else {
+		reg = HSW_NDE_RSTWRN_OPT;
+		reset_bits = RESET_PCH_HANDSHAKE_ENABLE;
+	}
+
+	if (DISPLAY_VER(dev_priv) >= 14)
+		reset_bits |= MTL_RESET_PICA_HANDSHAKE_EN;
+
+	val = intel_de_read(dev_priv, reg);
+
+	if (enable)
+		val |= reset_bits;
+	else
+		val &= ~reset_bits;
+
+	intel_de_write(dev_priv, reg, val);
+}
+
+static void skl_display_core_init(struct drm_i915_private *dev_priv,
+				  bool resume)
+{
+	struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
+	struct i915_power_well *well;
+
+	gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
+
+	/* enable PCH reset handshake */
+	intel_pch_reset_handshake(dev_priv, !HAS_PCH_NOP(dev_priv));
+
+	if (!HAS_DISPLAY(dev_priv))
+		return;
+
+	/* enable PG1 and Misc I/O */
+	mutex_lock(&power_domains->lock);
+
+	well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
+	intel_power_well_enable(dev_priv, well);
+
+	well = lookup_power_well(dev_priv, SKL_DISP_PW_MISC_IO);
+	intel_power_well_enable(dev_priv, well);
+
+	mutex_unlock(&power_domains->lock);
+
+	intel_cdclk_init_hw(dev_priv);
+
+	gen9_dbuf_enable(dev_priv);
+
+	if (resume)
+		intel_dmc_load_program(dev_priv);
+}
+
+static void skl_display_core_uninit(struct drm_i915_private *dev_priv)
+{
+	struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
+	struct i915_power_well *well;
+
+	if (!HAS_DISPLAY(dev_priv))
+		return;
+
+	gen9_disable_dc_states(dev_priv);
+	/* TODO: disable DMC program */
+
+	gen9_dbuf_disable(dev_priv);
+
+	intel_cdclk_uninit_hw(dev_priv);
+
+	/* The spec doesn't call for removing the reset handshake flag */
+	/* disable PG1 and Misc I/O */
+
+	mutex_lock(&power_domains->lock);
+
+	/*
+	 * BSpec says to keep the MISC IO power well enabled here, only
+	 * remove our request for power well 1.
+	 * Note that even though the driver's request is removed power well 1
+	 * may stay enabled after this due to DMC's own request on it.
+	 */
+	well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
+	intel_power_well_disable(dev_priv, well);
+
+	mutex_unlock(&power_domains->lock);
+
+	usleep_range(10, 30);		/* 10 us delay per Bspec */
+}
+
+static void bxt_display_core_init(struct drm_i915_private *dev_priv, bool resume)
+{
+	struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
+	struct i915_power_well *well;
+
+	gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
+
+	/*
+	 * NDE_RSTWRN_OPT RST PCH Handshake En must always be 0b on BXT
+	 * or else the reset will hang because there is no PCH to respond.
+	 * Move the handshake programming to initialization sequence.
+	 * Previously was left up to BIOS.
+	 */
+	intel_pch_reset_handshake(dev_priv, false);
+
+	if (!HAS_DISPLAY(dev_priv))
+		return;
+
+	/* Enable PG1 */
+	mutex_lock(&power_domains->lock);
+
+	well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
+	intel_power_well_enable(dev_priv, well);
+
+	mutex_unlock(&power_domains->lock);
+
+	intel_cdclk_init_hw(dev_priv);
+
+	gen9_dbuf_enable(dev_priv);
+
+	if (resume)
+		intel_dmc_load_program(dev_priv);
+}
+
+static void bxt_display_core_uninit(struct drm_i915_private *dev_priv)
+{
+	struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
+	struct i915_power_well *well;
+
+	if (!HAS_DISPLAY(dev_priv))
+		return;
+
+	gen9_disable_dc_states(dev_priv);
+	/* TODO: disable DMC program */
+
+	gen9_dbuf_disable(dev_priv);
+
+	intel_cdclk_uninit_hw(dev_priv);
+
+	/* The spec doesn't call for removing the reset handshake flag */
+
+	/*
+	 * Disable PW1 (PG1).
+	 * Note that even though the driver's request is removed power well 1
+	 * may stay enabled after this due to DMC's own request on it.
+	 */
+	mutex_lock(&power_domains->lock);
+
+	well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
+	intel_power_well_disable(dev_priv, well);
+
+	mutex_unlock(&power_domains->lock);
+
+	usleep_range(10, 30);		/* 10 us delay per Bspec */
+}
+
+struct buddy_page_mask {
+	u32 page_mask;
+	u8 type;
+	u8 num_channels;
+};
+
+static const struct buddy_page_mask tgl_buddy_page_masks[] = {
+	{ .num_channels = 1, .type = INTEL_DRAM_DDR4,   .page_mask = 0xF },
+	{ .num_channels = 1, .type = INTEL_DRAM_DDR5,	.page_mask = 0xF },
+	{ .num_channels = 2, .type = INTEL_DRAM_LPDDR4, .page_mask = 0x1C },
+	{ .num_channels = 2, .type = INTEL_DRAM_LPDDR5, .page_mask = 0x1C },
+	{ .num_channels = 2, .type = INTEL_DRAM_DDR4,   .page_mask = 0x1F },
+	{ .num_channels = 2, .type = INTEL_DRAM_DDR5,   .page_mask = 0x1E },
+	{ .num_channels = 4, .type = INTEL_DRAM_LPDDR4, .page_mask = 0x38 },
+	{ .num_channels = 4, .type = INTEL_DRAM_LPDDR5, .page_mask = 0x38 },
+	{}
+};
+
+static const struct buddy_page_mask wa_1409767108_buddy_page_masks[] = {
+	{ .num_channels = 1, .type = INTEL_DRAM_LPDDR4, .page_mask = 0x1 },
+	{ .num_channels = 1, .type = INTEL_DRAM_DDR4,   .page_mask = 0x1 },
+	{ .num_channels = 1, .type = INTEL_DRAM_DDR5,   .page_mask = 0x1 },
+	{ .num_channels = 1, .type = INTEL_DRAM_LPDDR5, .page_mask = 0x1 },
+	{ .num_channels = 2, .type = INTEL_DRAM_LPDDR4, .page_mask = 0x3 },
+	{ .num_channels = 2, .type = INTEL_DRAM_DDR4,   .page_mask = 0x3 },
+	{ .num_channels = 2, .type = INTEL_DRAM_DDR5,   .page_mask = 0x3 },
+	{ .num_channels = 2, .type = INTEL_DRAM_LPDDR5, .page_mask = 0x3 },
+	{}
+};
+
+static void tgl_bw_buddy_init(struct drm_i915_private *dev_priv)
+{
+	enum intel_dram_type type = dev_priv->dram_info.type;
+	u8 num_channels = dev_priv->dram_info.num_channels;
+	const struct buddy_page_mask *table;
+	unsigned long abox_mask = INTEL_INFO(dev_priv)->display.abox_mask;
+	int config, i;
+
+	/* BW_BUDDY registers are not used on dgpu's beyond DG1 */
+	if (IS_DGFX(dev_priv) && !IS_DG1(dev_priv))
+		return;
+
+	if (IS_ALDERLAKE_S(dev_priv) ||
+	    IS_DG1_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0) ||
+	    IS_RKL_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0) ||
+	    IS_TGL_DISPLAY_STEP(dev_priv, STEP_A0, STEP_C0))
+		/* Wa_1409767108:tgl,dg1,adl-s */
+		table = wa_1409767108_buddy_page_masks;
+	else
+		table = tgl_buddy_page_masks;
+
+	for (config = 0; table[config].page_mask != 0; config++)
+		if (table[config].num_channels == num_channels &&
+		    table[config].type == type)
+			break;
+
+	if (table[config].page_mask == 0) {
+		drm_dbg(&dev_priv->drm,
+			"Unknown memory configuration; disabling address buddy logic.\n");
+		for_each_set_bit(i, &abox_mask, sizeof(abox_mask))
+			intel_de_write(dev_priv, BW_BUDDY_CTL(i),
+				       BW_BUDDY_DISABLE);
+	} else {
+		for_each_set_bit(i, &abox_mask, sizeof(abox_mask)) {
+			intel_de_write(dev_priv, BW_BUDDY_PAGE_MASK(i),
+				       table[config].page_mask);
+
+			/* Wa_22010178259:tgl,dg1,rkl,adl-s */
+			if (DISPLAY_VER(dev_priv) == 12)
+				intel_de_rmw(dev_priv, BW_BUDDY_CTL(i),
+					     BW_BUDDY_TLB_REQ_TIMER_MASK,
+					     BW_BUDDY_TLB_REQ_TIMER(0x8));
+		}
+	}
+}
+
+static void icl_display_core_init(struct drm_i915_private *dev_priv,
+				  bool resume)
+{
+	struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
+	struct i915_power_well *well;
+	u32 val;
+
+	gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
+
+	/* Wa_14011294188:ehl,jsl,tgl,rkl,adl-s */
+	if (INTEL_PCH_TYPE(dev_priv) >= PCH_TGP &&
+	    INTEL_PCH_TYPE(dev_priv) < PCH_DG1)
+		intel_de_rmw(dev_priv, SOUTH_DSPCLK_GATE_D, 0,
+			     PCH_DPMGUNIT_CLOCK_GATE_DISABLE);
+
+	/* 1. Enable PCH reset handshake. */
+	intel_pch_reset_handshake(dev_priv, !HAS_PCH_NOP(dev_priv));
+
+	if (!HAS_DISPLAY(dev_priv))
+		return;
+
+	/* 2. Initialize all combo phys */
+	intel_combo_phy_init(dev_priv);
+
+	/*
+	 * 3. Enable Power Well 1 (PG1).
+	 *    The AUX IO power wells will be enabled on demand.
+	 */
+	mutex_lock(&power_domains->lock);
+	well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
+	intel_power_well_enable(dev_priv, well);
+	mutex_unlock(&power_domains->lock);
+
+	/* 4. Enable CDCLK. */
+	intel_cdclk_init_hw(dev_priv);
+
+	if (DISPLAY_VER(dev_priv) >= 12)
+		gen12_dbuf_slices_config(dev_priv);
+
+	/* 5. Enable DBUF. */
+	gen9_dbuf_enable(dev_priv);
+
+	/* 6. Setup MBUS. */
+	icl_mbus_init(dev_priv);
+
+	/* 7. Program arbiter BW_BUDDY registers */
+	if (DISPLAY_VER(dev_priv) >= 12)
+		tgl_bw_buddy_init(dev_priv);
+
+	/* 8. Ensure PHYs have completed calibration and adaptation */
+	if (IS_DG2(dev_priv))
+		intel_snps_phy_wait_for_calibration(dev_priv);
+
+	if (resume)
+		intel_dmc_load_program(dev_priv);
+
+	/* Wa_14011508470:tgl,dg1,rkl,adl-s,adl-p */
+	if (DISPLAY_VER(dev_priv) >= 12) {
+		val = DCPR_CLEAR_MEMSTAT_DIS | DCPR_SEND_RESP_IMM |
+		      DCPR_MASK_LPMODE | DCPR_MASK_MAXLATENCY_MEMUP_CLR;
+		intel_uncore_rmw(&dev_priv->uncore, GEN11_CHICKEN_DCPR_2, 0, val);
+	}
+
+	/* Wa_14011503030:xelpd */
+	if (DISPLAY_VER(dev_priv) >= 13)
+		intel_de_write(dev_priv, XELPD_DISPLAY_ERR_FATAL_MASK, ~0);
+}
+
+static void icl_display_core_uninit(struct drm_i915_private *dev_priv)
+{
+	struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
+	struct i915_power_well *well;
+
+	if (!HAS_DISPLAY(dev_priv))
+		return;
+
+	gen9_disable_dc_states(dev_priv);
+	intel_dmc_disable_program(dev_priv);
+
+	/* 1. Disable all display engine functions -> aready done */
+
+	/* 2. Disable DBUF */
+	gen9_dbuf_disable(dev_priv);
+
+	/* 3. Disable CD clock */
+	intel_cdclk_uninit_hw(dev_priv);
+
+	/*
+	 * 4. Disable Power Well 1 (PG1).
+	 *    The AUX IO power wells are toggled on demand, so they are already
+	 *    disabled at this point.
+	 */
+	mutex_lock(&power_domains->lock);
+	well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
+	intel_power_well_disable(dev_priv, well);
+	mutex_unlock(&power_domains->lock);
+
+	/* 5. */
+	intel_combo_phy_uninit(dev_priv);
+}
+
+static void chv_phy_control_init(struct drm_i915_private *dev_priv)
+{
+	struct i915_power_well *cmn_bc =
+		lookup_power_well(dev_priv, VLV_DISP_PW_DPIO_CMN_BC);
+	struct i915_power_well *cmn_d =
+		lookup_power_well(dev_priv, CHV_DISP_PW_DPIO_CMN_D);
+
+	/*
+	 * DISPLAY_PHY_CONTROL can get corrupted if read. As a
+	 * workaround never ever read DISPLAY_PHY_CONTROL, and
+	 * instead maintain a shadow copy ourselves. Use the actual
+	 * power well state and lane status to reconstruct the
+	 * expected initial value.
+	 */
+	dev_priv->display.power.chv_phy_control =
+		PHY_LDO_SEQ_DELAY(PHY_LDO_DELAY_600NS, DPIO_PHY0) |
+		PHY_LDO_SEQ_DELAY(PHY_LDO_DELAY_600NS, DPIO_PHY1) |
+		PHY_CH_POWER_MODE(PHY_CH_DEEP_PSR, DPIO_PHY0, DPIO_CH0) |
+		PHY_CH_POWER_MODE(PHY_CH_DEEP_PSR, DPIO_PHY0, DPIO_CH1) |
+		PHY_CH_POWER_MODE(PHY_CH_DEEP_PSR, DPIO_PHY1, DPIO_CH0);
+
+	/*
+	 * If all lanes are disabled we leave the override disabled
+	 * with all power down bits cleared to match the state we
+	 * would use after disabling the port. Otherwise enable the
+	 * override and set the lane powerdown bits accding to the
+	 * current lane status.
+	 */
+	if (intel_power_well_is_enabled(dev_priv, cmn_bc)) {
+		u32 status = intel_de_read(dev_priv, DPLL(PIPE_A));
+		unsigned int mask;
+
+		mask = status & DPLL_PORTB_READY_MASK;
+		if (mask == 0xf)
+			mask = 0x0;
+		else
+			dev_priv->display.power.chv_phy_control |=
+				PHY_CH_POWER_DOWN_OVRD_EN(DPIO_PHY0, DPIO_CH0);
+
+		dev_priv->display.power.chv_phy_control |=
+			PHY_CH_POWER_DOWN_OVRD(mask, DPIO_PHY0, DPIO_CH0);
+
+		mask = (status & DPLL_PORTC_READY_MASK) >> 4;
+		if (mask == 0xf)
+			mask = 0x0;
+		else
+			dev_priv->display.power.chv_phy_control |=
+				PHY_CH_POWER_DOWN_OVRD_EN(DPIO_PHY0, DPIO_CH1);
+
+		dev_priv->display.power.chv_phy_control |=
+			PHY_CH_POWER_DOWN_OVRD(mask, DPIO_PHY0, DPIO_CH1);
+
+		dev_priv->display.power.chv_phy_control |= PHY_COM_LANE_RESET_DEASSERT(DPIO_PHY0);
+
+		dev_priv->display.power.chv_phy_assert[DPIO_PHY0] = false;
+	} else {
+		dev_priv->display.power.chv_phy_assert[DPIO_PHY0] = true;
+	}
+
+	if (intel_power_well_is_enabled(dev_priv, cmn_d)) {
+		u32 status = intel_de_read(dev_priv, DPIO_PHY_STATUS);
+		unsigned int mask;
+
+		mask = status & DPLL_PORTD_READY_MASK;
+
+		if (mask == 0xf)
+			mask = 0x0;
+		else
+			dev_priv->display.power.chv_phy_control |=
+				PHY_CH_POWER_DOWN_OVRD_EN(DPIO_PHY1, DPIO_CH0);
+
+		dev_priv->display.power.chv_phy_control |=
+			PHY_CH_POWER_DOWN_OVRD(mask, DPIO_PHY1, DPIO_CH0);
+
+		dev_priv->display.power.chv_phy_control |= PHY_COM_LANE_RESET_DEASSERT(DPIO_PHY1);
+
+		dev_priv->display.power.chv_phy_assert[DPIO_PHY1] = false;
+	} else {
+		dev_priv->display.power.chv_phy_assert[DPIO_PHY1] = true;
+	}
+
+	drm_dbg_kms(&dev_priv->drm, "Initial PHY_CONTROL=0x%08x\n",
+		    dev_priv->display.power.chv_phy_control);
+
+	/* Defer application of initial phy_control to enabling the powerwell */
+}
+
+static void vlv_cmnlane_wa(struct drm_i915_private *dev_priv)
+{
+	struct i915_power_well *cmn =
+		lookup_power_well(dev_priv, VLV_DISP_PW_DPIO_CMN_BC);
+	struct i915_power_well *disp2d =
+		lookup_power_well(dev_priv, VLV_DISP_PW_DISP2D);
+
+	/* If the display might be already active skip this */
+	if (intel_power_well_is_enabled(dev_priv, cmn) &&
+	    intel_power_well_is_enabled(dev_priv, disp2d) &&
+	    intel_de_read(dev_priv, DPIO_CTL) & DPIO_CMNRST)
+		return;
+
+	drm_dbg_kms(&dev_priv->drm, "toggling display PHY side reset\n");
+
+	/* cmnlane needs DPLL registers */
+	intel_power_well_enable(dev_priv, disp2d);
+
+	/*
+	 * From VLV2A0_DP_eDP_HDMI_DPIO_driver_vbios_notes_11.docx:
+	 * Need to assert and de-assert PHY SB reset by gating the
+	 * common lane power, then un-gating it.
+	 * Simply ungating isn't enough to reset the PHY enough to get
+	 * ports and lanes running.
+	 */
+	intel_power_well_disable(dev_priv, cmn);
+}
+
+static bool vlv_punit_is_power_gated(struct drm_i915_private *dev_priv, u32 reg0)
+{
+	bool ret;
+
+	vlv_punit_get(dev_priv);
+	ret = (vlv_punit_read(dev_priv, reg0) & SSPM0_SSC_MASK) == SSPM0_SSC_PWR_GATE;
+	vlv_punit_put(dev_priv);
+
+	return ret;
+}
+
+static void assert_ved_power_gated(struct drm_i915_private *dev_priv)
+{
+	drm_WARN(&dev_priv->drm,
+		 !vlv_punit_is_power_gated(dev_priv, PUNIT_REG_VEDSSPM0),
+		 "VED not power gated\n");
+}
+
+static void assert_isp_power_gated(struct drm_i915_private *dev_priv)
+{
+	static const struct pci_device_id isp_ids[] = {
+		{PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0f38)},
+		{PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x22b8)},
+		{}
+	};
+
+	drm_WARN(&dev_priv->drm, !pci_dev_present(isp_ids) &&
+		 !vlv_punit_is_power_gated(dev_priv, PUNIT_REG_ISPSSPM0),
+		 "ISP not power gated\n");
+}
+
+static void intel_power_domains_verify_state(struct drm_i915_private *dev_priv);
+
+/**
+ * intel_power_domains_init_hw - initialize hardware power domain state
+ * @i915: i915 device instance
+ * @resume: Called from resume code paths or not
+ *
+ * This function initializes the hardware power domain state and enables all
+ * power wells belonging to the INIT power domain. Power wells in other
+ * domains (and not in the INIT domain) are referenced or disabled by
+ * intel_modeset_readout_hw_state(). After that the reference count of each
+ * power well must match its HW enabled state, see
+ * intel_power_domains_verify_state().
+ *
+ * It will return with power domains disabled (to be enabled later by
+ * intel_power_domains_enable()) and must be paired with
+ * intel_power_domains_driver_remove().
+ */
+void intel_power_domains_init_hw(struct drm_i915_private *i915, bool resume)
+{
+	struct i915_power_domains *power_domains = &i915->display.power.domains;
+
+	power_domains->initializing = true;
+
+	if (DISPLAY_VER(i915) >= 11) {
+		icl_display_core_init(i915, resume);
+	} else if (IS_GEMINILAKE(i915) || IS_BROXTON(i915)) {
+		bxt_display_core_init(i915, resume);
+	} else if (DISPLAY_VER(i915) == 9) {
+		skl_display_core_init(i915, resume);
+	} else if (IS_CHERRYVIEW(i915)) {
+		mutex_lock(&power_domains->lock);
+		chv_phy_control_init(i915);
+		mutex_unlock(&power_domains->lock);
+		assert_isp_power_gated(i915);
+	} else if (IS_VALLEYVIEW(i915)) {
+		mutex_lock(&power_domains->lock);
+		vlv_cmnlane_wa(i915);
+		mutex_unlock(&power_domains->lock);
+		assert_ved_power_gated(i915);
+		assert_isp_power_gated(i915);
+	} else if (IS_BROADWELL(i915) || IS_HASWELL(i915)) {
+		hsw_assert_cdclk(i915);
+		intel_pch_reset_handshake(i915, !HAS_PCH_NOP(i915));
+	} else if (IS_IVYBRIDGE(i915)) {
+		intel_pch_reset_handshake(i915, !HAS_PCH_NOP(i915));
+	}
+
+	/*
+	 * Keep all power wells enabled for any dependent HW access during
+	 * initialization and to make sure we keep BIOS enabled display HW
+	 * resources powered until display HW readout is complete. We drop
+	 * this reference in intel_power_domains_enable().
+	 */
+	drm_WARN_ON(&i915->drm, power_domains->init_wakeref);
+	power_domains->init_wakeref =
+		intel_display_power_get(i915, POWER_DOMAIN_INIT);
+
+	/* Disable power support if the user asked so. */
+	if (!i915->params.disable_power_well) {
+		drm_WARN_ON(&i915->drm, power_domains->disable_wakeref);
+		i915->display.power.domains.disable_wakeref = intel_display_power_get(i915,
+										      POWER_DOMAIN_INIT);
+	}
+	intel_power_domains_sync_hw(i915);
+
+	power_domains->initializing = false;
+}
+
+/**
+ * intel_power_domains_driver_remove - deinitialize hw power domain state
+ * @i915: i915 device instance
+ *
+ * De-initializes the display power domain HW state. It also ensures that the
+ * device stays powered up so that the driver can be reloaded.
+ *
+ * It must be called with power domains already disabled (after a call to
+ * intel_power_domains_disable()) and must be paired with
+ * intel_power_domains_init_hw().
+ */
+void intel_power_domains_driver_remove(struct drm_i915_private *i915)
+{
+	intel_wakeref_t wakeref __maybe_unused =
+		fetch_and_zero(&i915->display.power.domains.init_wakeref);
+
+	/* Remove the refcount we took to keep power well support disabled. */
+	if (!i915->params.disable_power_well)
+		intel_display_power_put(i915, POWER_DOMAIN_INIT,
+					fetch_and_zero(&i915->display.power.domains.disable_wakeref));
+
+	intel_display_power_flush_work_sync(i915);
+
+	intel_power_domains_verify_state(i915);
+
+	/* Keep the power well enabled, but cancel its rpm wakeref. */
+	intel_runtime_pm_put(&i915->runtime_pm, wakeref);
+}
+
+/**
+ * intel_power_domains_sanitize_state - sanitize power domains state
+ * @i915: i915 device instance
+ *
+ * Sanitize the power domains state during driver loading and system resume.
+ * The function will disable all display power wells that BIOS has enabled
+ * without a user for it (any user for a power well has taken a reference
+ * on it by the time this function is called, after the state of all the
+ * pipe, encoder, etc. HW resources have been sanitized).
+ */
+void intel_power_domains_sanitize_state(struct drm_i915_private *i915)
+{
+	struct i915_power_domains *power_domains = &i915->display.power.domains;
+	struct i915_power_well *power_well;
+
+	mutex_lock(&power_domains->lock);
+
+	for_each_power_well_reverse(i915, power_well) {
+		if (power_well->desc->always_on || power_well->count ||
+		    !intel_power_well_is_enabled(i915, power_well))
+			continue;
+
+		drm_dbg_kms(&i915->drm,
+			    "BIOS left unused %s power well enabled, disabling it\n",
+			    intel_power_well_name(power_well));
+		intel_power_well_disable(i915, power_well);
+	}
+
+	mutex_unlock(&power_domains->lock);
+}
+
+/**
+ * intel_power_domains_enable - enable toggling of display power wells
+ * @i915: i915 device instance
+ *
+ * Enable the ondemand enabling/disabling of the display power wells. Note that
+ * power wells not belonging to POWER_DOMAIN_INIT are allowed to be toggled
+ * only at specific points of the display modeset sequence, thus they are not
+ * affected by the intel_power_domains_enable()/disable() calls. The purpose
+ * of these function is to keep the rest of power wells enabled until the end
+ * of display HW readout (which will acquire the power references reflecting
+ * the current HW state).
+ */
+void intel_power_domains_enable(struct drm_i915_private *i915)
+{
+	intel_wakeref_t wakeref __maybe_unused =
+		fetch_and_zero(&i915->display.power.domains.init_wakeref);
+
+	intel_display_power_put(i915, POWER_DOMAIN_INIT, wakeref);
+	intel_power_domains_verify_state(i915);
+}
+
+/**
+ * intel_power_domains_disable - disable toggling of display power wells
+ * @i915: i915 device instance
+ *
+ * Disable the ondemand enabling/disabling of the display power wells. See
+ * intel_power_domains_enable() for which power wells this call controls.
+ */
+void intel_power_domains_disable(struct drm_i915_private *i915)
+{
+	struct i915_power_domains *power_domains = &i915->display.power.domains;
+
+	drm_WARN_ON(&i915->drm, power_domains->init_wakeref);
+	power_domains->init_wakeref =
+		intel_display_power_get(i915, POWER_DOMAIN_INIT);
+
+	intel_power_domains_verify_state(i915);
+}
+
+/**
+ * intel_power_domains_suspend - suspend power domain state
+ * @i915: i915 device instance
+ * @suspend_mode: specifies the target suspend state (idle, mem, hibernation)
+ *
+ * This function prepares the hardware power domain state before entering
+ * system suspend.
+ *
+ * It must be called with power domains already disabled (after a call to
+ * intel_power_domains_disable()) and paired with intel_power_domains_resume().
+ */
+void intel_power_domains_suspend(struct drm_i915_private *i915,
+				 enum i915_drm_suspend_mode suspend_mode)
+{
+	struct i915_power_domains *power_domains = &i915->display.power.domains;
+	intel_wakeref_t wakeref __maybe_unused =
+		fetch_and_zero(&power_domains->init_wakeref);
+
+	intel_display_power_put(i915, POWER_DOMAIN_INIT, wakeref);
+
+	/*
+	 * In case of suspend-to-idle (aka S0ix) on a DMC platform without DC9
+	 * support don't manually deinit the power domains. This also means the
+	 * DMC firmware will stay active, it will power down any HW
+	 * resources as required and also enable deeper system power states
+	 * that would be blocked if the firmware was inactive.
+	 */
+	if (!(i915->display.dmc.allowed_dc_mask & DC_STATE_EN_DC9) &&
+	    suspend_mode == I915_DRM_SUSPEND_IDLE &&
+	    intel_dmc_has_payload(i915)) {
+		intel_display_power_flush_work(i915);
+		intel_power_domains_verify_state(i915);
+		return;
+	}
+
+	/*
+	 * Even if power well support was disabled we still want to disable
+	 * power wells if power domains must be deinitialized for suspend.
+	 */
+	if (!i915->params.disable_power_well)
+		intel_display_power_put(i915, POWER_DOMAIN_INIT,
+					fetch_and_zero(&i915->display.power.domains.disable_wakeref));
+
+	intel_display_power_flush_work(i915);
+	intel_power_domains_verify_state(i915);
+
+	if (DISPLAY_VER(i915) >= 11)
+		icl_display_core_uninit(i915);
+	else if (IS_GEMINILAKE(i915) || IS_BROXTON(i915))
+		bxt_display_core_uninit(i915);
+	else if (DISPLAY_VER(i915) == 9)
+		skl_display_core_uninit(i915);
+
+	power_domains->display_core_suspended = true;
+}
+
+/**
+ * intel_power_domains_resume - resume power domain state
+ * @i915: i915 device instance
+ *
+ * This function resume the hardware power domain state during system resume.
+ *
+ * It will return with power domain support disabled (to be enabled later by
+ * intel_power_domains_enable()) and must be paired with
+ * intel_power_domains_suspend().
+ */
+void intel_power_domains_resume(struct drm_i915_private *i915)
+{
+	struct i915_power_domains *power_domains = &i915->display.power.domains;
+
+	if (power_domains->display_core_suspended) {
+		intel_power_domains_init_hw(i915, true);
+		power_domains->display_core_suspended = false;
+	} else {
+		drm_WARN_ON(&i915->drm, power_domains->init_wakeref);
+		power_domains->init_wakeref =
+			intel_display_power_get(i915, POWER_DOMAIN_INIT);
+	}
+
+	intel_power_domains_verify_state(i915);
+}
+
+#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
+
+static void intel_power_domains_dump_info(struct drm_i915_private *i915)
+{
+	struct i915_power_domains *power_domains = &i915->display.power.domains;
+	struct i915_power_well *power_well;
+
+	for_each_power_well(i915, power_well) {
+		enum intel_display_power_domain domain;
+
+		drm_dbg(&i915->drm, "%-25s %d\n",
+			intel_power_well_name(power_well), intel_power_well_refcount(power_well));
+
+		for_each_power_domain(domain, intel_power_well_domains(power_well))
+			drm_dbg(&i915->drm, "  %-23s %d\n",
+				intel_display_power_domain_str(domain),
+				power_domains->domain_use_count[domain]);
+	}
+}
+
+/**
+ * intel_power_domains_verify_state - verify the HW/SW state for all power wells
+ * @i915: i915 device instance
+ *
+ * Verify if the reference count of each power well matches its HW enabled
+ * state and the total refcount of the domains it belongs to. This must be
+ * called after modeset HW state sanitization, which is responsible for
+ * acquiring reference counts for any power wells in use and disabling the
+ * ones left on by BIOS but not required by any active output.
+ */
+static void intel_power_domains_verify_state(struct drm_i915_private *i915)
+{
+	struct i915_power_domains *power_domains = &i915->display.power.domains;
+	struct i915_power_well *power_well;
+	bool dump_domain_info;
+
+	mutex_lock(&power_domains->lock);
+
+	verify_async_put_domains_state(power_domains);
+
+	dump_domain_info = false;
+	for_each_power_well(i915, power_well) {
+		enum intel_display_power_domain domain;
+		int domains_count;
+		bool enabled;
+
+		enabled = intel_power_well_is_enabled(i915, power_well);
+		if ((intel_power_well_refcount(power_well) ||
+		     intel_power_well_is_always_on(power_well)) !=
+		    enabled)
+			drm_err(&i915->drm,
+				"power well %s state mismatch (refcount %d/enabled %d)",
+				intel_power_well_name(power_well),
+				intel_power_well_refcount(power_well), enabled);
+
+		domains_count = 0;
+		for_each_power_domain(domain, intel_power_well_domains(power_well))
+			domains_count += power_domains->domain_use_count[domain];
+
+		if (intel_power_well_refcount(power_well) != domains_count) {
+			drm_err(&i915->drm,
+				"power well %s refcount/domain refcount mismatch "
+				"(refcount %d/domains refcount %d)\n",
+				intel_power_well_name(power_well),
+				intel_power_well_refcount(power_well),
+				domains_count);
+			dump_domain_info = true;
+		}
+	}
+
+	if (dump_domain_info) {
+		static bool dumped;
+
+		if (!dumped) {
+			intel_power_domains_dump_info(i915);
+			dumped = true;
+		}
+	}
+
+	mutex_unlock(&power_domains->lock);
+}
+
+#else
+
+static void intel_power_domains_verify_state(struct drm_i915_private *i915)
+{
+}
+
+#endif
+
+void intel_display_power_suspend_late(struct drm_i915_private *i915)
+{
+	if (DISPLAY_VER(i915) >= 11 || IS_GEMINILAKE(i915) ||
+	    IS_BROXTON(i915)) {
+		bxt_enable_dc9(i915);
+	} else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) {
+		hsw_enable_pc8(i915);
+	}
+
+	/* Tweaked Wa_14010685332:cnp,icp,jsp,mcc,tgp,adp */
+	if (INTEL_PCH_TYPE(i915) >= PCH_CNP && INTEL_PCH_TYPE(i915) < PCH_DG1)
+		intel_de_rmw(i915, SOUTH_CHICKEN1, SBCLK_RUN_REFCLK_DIS, SBCLK_RUN_REFCLK_DIS);
+}
+
+void intel_display_power_resume_early(struct drm_i915_private *i915)
+{
+	if (DISPLAY_VER(i915) >= 11 || IS_GEMINILAKE(i915) ||
+	    IS_BROXTON(i915)) {
+		gen9_sanitize_dc_state(i915);
+		bxt_disable_dc9(i915);
+	} else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) {
+		hsw_disable_pc8(i915);
+	}
+
+	/* Tweaked Wa_14010685332:cnp,icp,jsp,mcc,tgp,adp */
+	if (INTEL_PCH_TYPE(i915) >= PCH_CNP && INTEL_PCH_TYPE(i915) < PCH_DG1)
+		intel_de_rmw(i915, SOUTH_CHICKEN1, SBCLK_RUN_REFCLK_DIS, 0);
+}
+
+void intel_display_power_suspend(struct drm_i915_private *i915)
+{
+	if (DISPLAY_VER(i915) >= 11) {
+		icl_display_core_uninit(i915);
+		bxt_enable_dc9(i915);
+	} else if (IS_GEMINILAKE(i915) || IS_BROXTON(i915)) {
+		bxt_display_core_uninit(i915);
+		bxt_enable_dc9(i915);
+	} else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) {
+		hsw_enable_pc8(i915);
+	}
+}
+
+void intel_display_power_resume(struct drm_i915_private *i915)
+{
+	if (DISPLAY_VER(i915) >= 11) {
+		bxt_disable_dc9(i915);
+		icl_display_core_init(i915, true);
+		if (intel_dmc_has_payload(i915)) {
+			if (i915->display.dmc.allowed_dc_mask &
+			    DC_STATE_EN_UPTO_DC6)
+				skl_enable_dc6(i915);
+			else if (i915->display.dmc.allowed_dc_mask &
+				 DC_STATE_EN_UPTO_DC5)
+				gen9_enable_dc5(i915);
+		}
+	} else if (IS_GEMINILAKE(i915) || IS_BROXTON(i915)) {
+		bxt_disable_dc9(i915);
+		bxt_display_core_init(i915, true);
+		if (intel_dmc_has_payload(i915) &&
+		    (i915->display.dmc.allowed_dc_mask & DC_STATE_EN_UPTO_DC5))
+			gen9_enable_dc5(i915);
+	} else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) {
+		hsw_disable_pc8(i915);
+	}
+}
+
+void intel_display_power_debug(struct drm_i915_private *i915, struct seq_file *m)
+{
+	struct i915_power_domains *power_domains = &i915->display.power.domains;
+	int i;
+
+	mutex_lock(&power_domains->lock);
+
+	seq_printf(m, "%-25s %s\n", "Power well/domain", "Use count");
+	for (i = 0; i < power_domains->power_well_count; i++) {
+		struct i915_power_well *power_well;
+		enum intel_display_power_domain power_domain;
+
+		power_well = &power_domains->power_wells[i];
+		seq_printf(m, "%-25s %d\n", intel_power_well_name(power_well),
+			   intel_power_well_refcount(power_well));
+
+		for_each_power_domain(power_domain, intel_power_well_domains(power_well))
+			seq_printf(m, "  %-23s %d\n",
+				   intel_display_power_domain_str(power_domain),
+				   power_domains->domain_use_count[power_domain]);
+	}
+
+	mutex_unlock(&power_domains->lock);
+}
+
+struct intel_ddi_port_domains {
+	enum port port_start;
+	enum port port_end;
+	enum aux_ch aux_ch_start;
+	enum aux_ch aux_ch_end;
+
+	enum intel_display_power_domain ddi_lanes;
+	enum intel_display_power_domain ddi_io;
+	enum intel_display_power_domain aux_legacy_usbc;
+	enum intel_display_power_domain aux_tbt;
+};
+
+static const struct intel_ddi_port_domains
+i9xx_port_domains[] = {
+	{
+		.port_start = PORT_A,
+		.port_end = PORT_F,
+		.aux_ch_start = AUX_CH_A,
+		.aux_ch_end = AUX_CH_F,
+
+		.ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_A,
+		.ddi_io = POWER_DOMAIN_PORT_DDI_IO_A,
+		.aux_legacy_usbc = POWER_DOMAIN_AUX_A,
+		.aux_tbt = POWER_DOMAIN_INVALID,
+	},
+};
+
+static const struct intel_ddi_port_domains
+d11_port_domains[] = {
+	{
+		.port_start = PORT_A,
+		.port_end = PORT_B,
+		.aux_ch_start = AUX_CH_A,
+		.aux_ch_end = AUX_CH_B,
+
+		.ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_A,
+		.ddi_io = POWER_DOMAIN_PORT_DDI_IO_A,
+		.aux_legacy_usbc = POWER_DOMAIN_AUX_A,
+		.aux_tbt = POWER_DOMAIN_INVALID,
+	}, {
+		.port_start = PORT_C,
+		.port_end = PORT_F,
+		.aux_ch_start = AUX_CH_C,
+		.aux_ch_end = AUX_CH_F,
+
+		.ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_C,
+		.ddi_io = POWER_DOMAIN_PORT_DDI_IO_C,
+		.aux_legacy_usbc = POWER_DOMAIN_AUX_C,
+		.aux_tbt = POWER_DOMAIN_AUX_TBT1,
+	},
+};
+
+static const struct intel_ddi_port_domains
+d12_port_domains[] = {
+	{
+		.port_start = PORT_A,
+		.port_end = PORT_C,
+		.aux_ch_start = AUX_CH_A,
+		.aux_ch_end = AUX_CH_C,
+
+		.ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_A,
+		.ddi_io = POWER_DOMAIN_PORT_DDI_IO_A,
+		.aux_legacy_usbc = POWER_DOMAIN_AUX_A,
+		.aux_tbt = POWER_DOMAIN_INVALID,
+	}, {
+		.port_start = PORT_TC1,
+		.port_end = PORT_TC6,
+		.aux_ch_start = AUX_CH_USBC1,
+		.aux_ch_end = AUX_CH_USBC6,
+
+		.ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_TC1,
+		.ddi_io = POWER_DOMAIN_PORT_DDI_IO_TC1,
+		.aux_legacy_usbc = POWER_DOMAIN_AUX_USBC1,
+		.aux_tbt = POWER_DOMAIN_AUX_TBT1,
+	},
+};
+
+static const struct intel_ddi_port_domains
+d13_port_domains[] = {
+	{
+		.port_start = PORT_A,
+		.port_end = PORT_C,
+		.aux_ch_start = AUX_CH_A,
+		.aux_ch_end = AUX_CH_C,
+
+		.ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_A,
+		.ddi_io = POWER_DOMAIN_PORT_DDI_IO_A,
+		.aux_legacy_usbc = POWER_DOMAIN_AUX_A,
+		.aux_tbt = POWER_DOMAIN_INVALID,
+	}, {
+		.port_start = PORT_TC1,
+		.port_end = PORT_TC4,
+		.aux_ch_start = AUX_CH_USBC1,
+		.aux_ch_end = AUX_CH_USBC4,
+
+		.ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_TC1,
+		.ddi_io = POWER_DOMAIN_PORT_DDI_IO_TC1,
+		.aux_legacy_usbc = POWER_DOMAIN_AUX_USBC1,
+		.aux_tbt = POWER_DOMAIN_AUX_TBT1,
+	}, {
+		.port_start = PORT_D_XELPD,
+		.port_end = PORT_E_XELPD,
+		.aux_ch_start = AUX_CH_D_XELPD,
+		.aux_ch_end = AUX_CH_E_XELPD,
+
+		.ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_D,
+		.ddi_io = POWER_DOMAIN_PORT_DDI_IO_D,
+		.aux_legacy_usbc = POWER_DOMAIN_AUX_D,
+		.aux_tbt = POWER_DOMAIN_INVALID,
+	},
+};
+
+static void
+intel_port_domains_for_platform(struct drm_i915_private *i915,
+				const struct intel_ddi_port_domains **domains,
+				int *domains_size)
+{
+	if (DISPLAY_VER(i915) >= 13) {
+		*domains = d13_port_domains;
+		*domains_size = ARRAY_SIZE(d13_port_domains);
+	} else if (DISPLAY_VER(i915) >= 12) {
+		*domains = d12_port_domains;
+		*domains_size = ARRAY_SIZE(d12_port_domains);
+	} else if (DISPLAY_VER(i915) >= 11) {
+		*domains = d11_port_domains;
+		*domains_size = ARRAY_SIZE(d11_port_domains);
+	} else {
+		*domains = i9xx_port_domains;
+		*domains_size = ARRAY_SIZE(i9xx_port_domains);
+	}
+}
+
+static const struct intel_ddi_port_domains *
+intel_port_domains_for_port(struct drm_i915_private *i915, enum port port)
+{
+	const struct intel_ddi_port_domains *domains;
+	int domains_size;
+	int i;
+
+	intel_port_domains_for_platform(i915, &domains, &domains_size);
+	for (i = 0; i < domains_size; i++)
+		if (port >= domains[i].port_start && port <= domains[i].port_end)
+			return &domains[i];
+
+	return NULL;
+}
+
+enum intel_display_power_domain
+intel_display_power_ddi_io_domain(struct drm_i915_private *i915, enum port port)
+{
+	const struct intel_ddi_port_domains *domains = intel_port_domains_for_port(i915, port);
+
+	if (drm_WARN_ON(&i915->drm, !domains || domains->ddi_io == POWER_DOMAIN_INVALID))
+		return POWER_DOMAIN_PORT_DDI_IO_A;
+
+	return domains->ddi_io + (int)(port - domains->port_start);
+}
+
+enum intel_display_power_domain
+intel_display_power_ddi_lanes_domain(struct drm_i915_private *i915, enum port port)
+{
+	const struct intel_ddi_port_domains *domains = intel_port_domains_for_port(i915, port);
+
+	if (drm_WARN_ON(&i915->drm, !domains || domains->ddi_lanes == POWER_DOMAIN_INVALID))
+		return POWER_DOMAIN_PORT_DDI_LANES_A;
+
+	return domains->ddi_lanes + (int)(port - domains->port_start);
+}
+
+static const struct intel_ddi_port_domains *
+intel_port_domains_for_aux_ch(struct drm_i915_private *i915, enum aux_ch aux_ch)
+{
+	const struct intel_ddi_port_domains *domains;
+	int domains_size;
+	int i;
+
+	intel_port_domains_for_platform(i915, &domains, &domains_size);
+	for (i = 0; i < domains_size; i++)
+		if (aux_ch >= domains[i].aux_ch_start && aux_ch <= domains[i].aux_ch_end)
+			return &domains[i];
+
+	return NULL;
+}
+
+enum intel_display_power_domain
+intel_display_power_legacy_aux_domain(struct drm_i915_private *i915, enum aux_ch aux_ch)
+{
+	const struct intel_ddi_port_domains *domains = intel_port_domains_for_aux_ch(i915, aux_ch);
+
+	if (drm_WARN_ON(&i915->drm, !domains || domains->aux_legacy_usbc == POWER_DOMAIN_INVALID))
+		return POWER_DOMAIN_AUX_A;
+
+	return domains->aux_legacy_usbc + (int)(aux_ch - domains->aux_ch_start);
+}
+
+enum intel_display_power_domain
+intel_display_power_tbt_aux_domain(struct drm_i915_private *i915, enum aux_ch aux_ch)
+{
+	const struct intel_ddi_port_domains *domains = intel_port_domains_for_aux_ch(i915, aux_ch);
+
+	if (drm_WARN_ON(&i915->drm, !domains || domains->aux_tbt == POWER_DOMAIN_INVALID))
+		return POWER_DOMAIN_AUX_TBT1;
+
+	return domains->aux_tbt + (int)(aux_ch - domains->aux_ch_start);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_display_power.h b/drivers/gpu/drm/i915/display/intel_display_power.h
new file mode 100644
index 000000000..7136ea3f2
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_display_power.h
@@ -0,0 +1,279 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_DISPLAY_POWER_H__
+#define __INTEL_DISPLAY_POWER_H__
+
+#include "intel_runtime_pm.h"
+
+enum aux_ch;
+enum dpio_channel;
+enum dpio_phy;
+enum port;
+struct drm_i915_private;
+struct i915_power_well;
+struct intel_encoder;
+
+/*
+ * Keep the pipe, transcoder, port (DDI_LANES,DDI_IO,AUX) domain instances
+ * consecutive, so that the pipe,transcoder,port -> power domain macros
+ * work correctly.
+ */
+enum intel_display_power_domain {
+	POWER_DOMAIN_DISPLAY_CORE,
+	POWER_DOMAIN_PIPE_A,
+	POWER_DOMAIN_PIPE_B,
+	POWER_DOMAIN_PIPE_C,
+	POWER_DOMAIN_PIPE_D,
+	POWER_DOMAIN_PIPE_PANEL_FITTER_A,
+	POWER_DOMAIN_PIPE_PANEL_FITTER_B,
+	POWER_DOMAIN_PIPE_PANEL_FITTER_C,
+	POWER_DOMAIN_PIPE_PANEL_FITTER_D,
+	POWER_DOMAIN_TRANSCODER_A,
+	POWER_DOMAIN_TRANSCODER_B,
+	POWER_DOMAIN_TRANSCODER_C,
+	POWER_DOMAIN_TRANSCODER_D,
+	POWER_DOMAIN_TRANSCODER_EDP,
+	POWER_DOMAIN_TRANSCODER_DSI_A,
+	POWER_DOMAIN_TRANSCODER_DSI_C,
+
+	/* VDSC/joining for eDP/DSI transcoder (ICL) or pipe A (TGL) */
+	POWER_DOMAIN_TRANSCODER_VDSC_PW2,
+
+	POWER_DOMAIN_PORT_DDI_LANES_A,
+	POWER_DOMAIN_PORT_DDI_LANES_B,
+	POWER_DOMAIN_PORT_DDI_LANES_C,
+	POWER_DOMAIN_PORT_DDI_LANES_D,
+	POWER_DOMAIN_PORT_DDI_LANES_E,
+	POWER_DOMAIN_PORT_DDI_LANES_F,
+
+	POWER_DOMAIN_PORT_DDI_LANES_TC1,
+	POWER_DOMAIN_PORT_DDI_LANES_TC2,
+	POWER_DOMAIN_PORT_DDI_LANES_TC3,
+	POWER_DOMAIN_PORT_DDI_LANES_TC4,
+	POWER_DOMAIN_PORT_DDI_LANES_TC5,
+	POWER_DOMAIN_PORT_DDI_LANES_TC6,
+
+	POWER_DOMAIN_PORT_DDI_IO_A,
+	POWER_DOMAIN_PORT_DDI_IO_B,
+	POWER_DOMAIN_PORT_DDI_IO_C,
+	POWER_DOMAIN_PORT_DDI_IO_D,
+	POWER_DOMAIN_PORT_DDI_IO_E,
+	POWER_DOMAIN_PORT_DDI_IO_F,
+
+	POWER_DOMAIN_PORT_DDI_IO_TC1,
+	POWER_DOMAIN_PORT_DDI_IO_TC2,
+	POWER_DOMAIN_PORT_DDI_IO_TC3,
+	POWER_DOMAIN_PORT_DDI_IO_TC4,
+	POWER_DOMAIN_PORT_DDI_IO_TC5,
+	POWER_DOMAIN_PORT_DDI_IO_TC6,
+
+	POWER_DOMAIN_PORT_DSI,
+	POWER_DOMAIN_PORT_CRT,
+	POWER_DOMAIN_PORT_OTHER,
+	POWER_DOMAIN_VGA,
+	POWER_DOMAIN_AUDIO_MMIO,
+	POWER_DOMAIN_AUDIO_PLAYBACK,
+	POWER_DOMAIN_AUX_A,
+	POWER_DOMAIN_AUX_B,
+	POWER_DOMAIN_AUX_C,
+	POWER_DOMAIN_AUX_D,
+	POWER_DOMAIN_AUX_E,
+	POWER_DOMAIN_AUX_F,
+
+	POWER_DOMAIN_AUX_USBC1,
+	POWER_DOMAIN_AUX_USBC2,
+	POWER_DOMAIN_AUX_USBC3,
+	POWER_DOMAIN_AUX_USBC4,
+	POWER_DOMAIN_AUX_USBC5,
+	POWER_DOMAIN_AUX_USBC6,
+
+	POWER_DOMAIN_AUX_IO_A,
+
+	POWER_DOMAIN_AUX_TBT1,
+	POWER_DOMAIN_AUX_TBT2,
+	POWER_DOMAIN_AUX_TBT3,
+	POWER_DOMAIN_AUX_TBT4,
+	POWER_DOMAIN_AUX_TBT5,
+	POWER_DOMAIN_AUX_TBT6,
+
+	POWER_DOMAIN_GMBUS,
+	POWER_DOMAIN_MODESET,
+	POWER_DOMAIN_GT_IRQ,
+	POWER_DOMAIN_DC_OFF,
+	POWER_DOMAIN_TC_COLD_OFF,
+	POWER_DOMAIN_INIT,
+
+	POWER_DOMAIN_NUM,
+	POWER_DOMAIN_INVALID = POWER_DOMAIN_NUM,
+};
+
+#define POWER_DOMAIN_PIPE(pipe) ((pipe) + POWER_DOMAIN_PIPE_A)
+#define POWER_DOMAIN_PIPE_PANEL_FITTER(pipe) \
+		((pipe) + POWER_DOMAIN_PIPE_PANEL_FITTER_A)
+#define POWER_DOMAIN_TRANSCODER(tran) \
+	((tran) == TRANSCODER_EDP ? POWER_DOMAIN_TRANSCODER_EDP : \
+	 (tran) + POWER_DOMAIN_TRANSCODER_A)
+
+struct intel_power_domain_mask {
+	DECLARE_BITMAP(bits, POWER_DOMAIN_NUM);
+};
+
+struct i915_power_domains {
+	/*
+	 * Power wells needed for initialization at driver init and suspend
+	 * time are on. They are kept on until after the first modeset.
+	 */
+	bool initializing;
+	bool display_core_suspended;
+	int power_well_count;
+
+	intel_wakeref_t init_wakeref;
+	intel_wakeref_t disable_wakeref;
+
+	struct mutex lock;
+	int domain_use_count[POWER_DOMAIN_NUM];
+
+	struct delayed_work async_put_work;
+	intel_wakeref_t async_put_wakeref;
+	struct intel_power_domain_mask async_put_domains[2];
+
+	struct i915_power_well *power_wells;
+};
+
+struct intel_display_power_domain_set {
+	struct intel_power_domain_mask mask;
+#ifdef CONFIG_DRM_I915_DEBUG_RUNTIME_PM
+	intel_wakeref_t wakerefs[POWER_DOMAIN_NUM];
+#endif
+};
+
+#define for_each_power_domain(__domain, __mask)				\
+	for ((__domain) = 0; (__domain) < POWER_DOMAIN_NUM; (__domain)++)	\
+		for_each_if(test_bit((__domain), (__mask)->bits))
+
+int intel_power_domains_init(struct drm_i915_private *dev_priv);
+void intel_power_domains_cleanup(struct drm_i915_private *dev_priv);
+void intel_power_domains_init_hw(struct drm_i915_private *dev_priv, bool resume);
+void intel_power_domains_driver_remove(struct drm_i915_private *dev_priv);
+void intel_power_domains_enable(struct drm_i915_private *dev_priv);
+void intel_power_domains_disable(struct drm_i915_private *dev_priv);
+void intel_power_domains_suspend(struct drm_i915_private *dev_priv,
+				 enum i915_drm_suspend_mode);
+void intel_power_domains_resume(struct drm_i915_private *dev_priv);
+void intel_power_domains_sanitize_state(struct drm_i915_private *dev_priv);
+
+void intel_display_power_suspend_late(struct drm_i915_private *i915);
+void intel_display_power_resume_early(struct drm_i915_private *i915);
+void intel_display_power_suspend(struct drm_i915_private *i915);
+void intel_display_power_resume(struct drm_i915_private *i915);
+void intel_display_power_set_target_dc_state(struct drm_i915_private *dev_priv,
+					     u32 state);
+
+const char *
+intel_display_power_domain_str(enum intel_display_power_domain domain);
+
+bool intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
+				    enum intel_display_power_domain domain);
+bool __intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
+				      enum intel_display_power_domain domain);
+intel_wakeref_t intel_display_power_get(struct drm_i915_private *dev_priv,
+					enum intel_display_power_domain domain);
+intel_wakeref_t
+intel_display_power_get_if_enabled(struct drm_i915_private *dev_priv,
+				   enum intel_display_power_domain domain);
+void __intel_display_power_put_async(struct drm_i915_private *i915,
+				     enum intel_display_power_domain domain,
+				     intel_wakeref_t wakeref);
+void intel_display_power_flush_work(struct drm_i915_private *i915);
+#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
+void intel_display_power_put(struct drm_i915_private *dev_priv,
+			     enum intel_display_power_domain domain,
+			     intel_wakeref_t wakeref);
+static inline void
+intel_display_power_put_async(struct drm_i915_private *i915,
+			      enum intel_display_power_domain domain,
+			      intel_wakeref_t wakeref)
+{
+	__intel_display_power_put_async(i915, domain, wakeref);
+}
+#else
+void intel_display_power_put_unchecked(struct drm_i915_private *dev_priv,
+				       enum intel_display_power_domain domain);
+
+static inline void
+intel_display_power_put(struct drm_i915_private *i915,
+			enum intel_display_power_domain domain,
+			intel_wakeref_t wakeref)
+{
+	intel_display_power_put_unchecked(i915, domain);
+}
+
+static inline void
+intel_display_power_put_async(struct drm_i915_private *i915,
+			      enum intel_display_power_domain domain,
+			      intel_wakeref_t wakeref)
+{
+	__intel_display_power_put_async(i915, domain, -1);
+}
+#endif
+
+void
+intel_display_power_get_in_set(struct drm_i915_private *i915,
+			       struct intel_display_power_domain_set *power_domain_set,
+			       enum intel_display_power_domain domain);
+
+bool
+intel_display_power_get_in_set_if_enabled(struct drm_i915_private *i915,
+					  struct intel_display_power_domain_set *power_domain_set,
+					  enum intel_display_power_domain domain);
+
+void
+intel_display_power_put_mask_in_set(struct drm_i915_private *i915,
+				    struct intel_display_power_domain_set *power_domain_set,
+				    struct intel_power_domain_mask *mask);
+
+static inline void
+intel_display_power_put_all_in_set(struct drm_i915_private *i915,
+				   struct intel_display_power_domain_set *power_domain_set)
+{
+	intel_display_power_put_mask_in_set(i915, power_domain_set, &power_domain_set->mask);
+}
+
+void intel_display_power_debug(struct drm_i915_private *i915, struct seq_file *m);
+
+enum intel_display_power_domain
+intel_display_power_ddi_lanes_domain(struct drm_i915_private *i915, enum port port);
+enum intel_display_power_domain
+intel_display_power_ddi_io_domain(struct drm_i915_private *i915, enum port port);
+enum intel_display_power_domain
+intel_display_power_legacy_aux_domain(struct drm_i915_private *i915, enum aux_ch aux_ch);
+enum intel_display_power_domain
+intel_display_power_tbt_aux_domain(struct drm_i915_private *i915, enum aux_ch aux_ch);
+
+/*
+ * FIXME: We should probably switch this to a 0-based scheme to be consistent
+ * with how we now name/number DBUF_CTL instances.
+ */
+enum dbuf_slice {
+	DBUF_S1,
+	DBUF_S2,
+	DBUF_S3,
+	DBUF_S4,
+	I915_MAX_DBUF_SLICES
+};
+
+void gen9_dbuf_slices_update(struct drm_i915_private *dev_priv,
+			     u8 req_slices);
+
+#define with_intel_display_power(i915, domain, wf) \
+	for ((wf) = intel_display_power_get((i915), (domain)); (wf); \
+	     intel_display_power_put_async((i915), (domain), (wf)), (wf) = 0)
+
+#define with_intel_display_power_if_enabled(i915, domain, wf) \
+	for ((wf) = intel_display_power_get_if_enabled((i915), (domain)); (wf); \
+	     intel_display_power_put_async((i915), (domain), (wf)), (wf) = 0)
+
+#endif /* __INTEL_DISPLAY_POWER_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_display_power_map.c b/drivers/gpu/drm/i915/display/intel_display_power_map.c
new file mode 100644
index 000000000..dc04afc6c
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_display_power_map.c
@@ -0,0 +1,1614 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#include "i915_drv.h"
+#include "i915_reg.h"
+
+#include "vlv_sideband_reg.h"
+
+#include "intel_display_power_map.h"
+#include "intel_display_power_well.h"
+
+#define __LIST_INLINE_ELEMS(__elem_type, ...) \
+	((__elem_type[]) { __VA_ARGS__ })
+
+#define __LIST(__elems) { \
+	.list = __elems, \
+	.count = ARRAY_SIZE(__elems), \
+}
+
+#define I915_PW_DOMAINS(...) \
+	(const struct i915_power_domain_list) \
+		__LIST(__LIST_INLINE_ELEMS(const enum intel_display_power_domain, __VA_ARGS__))
+
+#define I915_DECL_PW_DOMAINS(__name, ...) \
+	static const struct i915_power_domain_list __name = I915_PW_DOMAINS(__VA_ARGS__)
+
+/* Zero-length list assigns all power domains, a NULL list assigns none. */
+#define I915_PW_DOMAINS_NONE	NULL
+#define I915_PW_DOMAINS_ALL	/* zero-length list */
+
+#define I915_PW_INSTANCES(...) \
+	(const struct i915_power_well_instance_list) \
+		__LIST(__LIST_INLINE_ELEMS(const struct i915_power_well_instance, __VA_ARGS__))
+
+#define I915_PW(_name, _domain_list, ...) \
+	{ .name = _name, .domain_list = _domain_list, ## __VA_ARGS__ }
+
+
+struct i915_power_well_desc_list {
+	const struct i915_power_well_desc *list;
+	u8 count;
+};
+
+#define I915_PW_DESCRIPTORS(x) __LIST(x)
+
+
+I915_DECL_PW_DOMAINS(i9xx_pwdoms_always_on, I915_PW_DOMAINS_ALL);
+
+static const struct i915_power_well_desc i9xx_power_wells_always_on[] = {
+	{
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("always-on", &i9xx_pwdoms_always_on),
+		),
+		.ops = &i9xx_always_on_power_well_ops,
+		.always_on = true,
+	},
+};
+
+static const struct i915_power_well_desc_list i9xx_power_wells[] = {
+	I915_PW_DESCRIPTORS(i9xx_power_wells_always_on),
+};
+
+I915_DECL_PW_DOMAINS(i830_pwdoms_pipes,
+	POWER_DOMAIN_PIPE_A,
+	POWER_DOMAIN_PIPE_B,
+	POWER_DOMAIN_PIPE_PANEL_FITTER_A,
+	POWER_DOMAIN_PIPE_PANEL_FITTER_B,
+	POWER_DOMAIN_TRANSCODER_A,
+	POWER_DOMAIN_TRANSCODER_B,
+	POWER_DOMAIN_INIT);
+
+static const struct i915_power_well_desc i830_power_wells_main[] = {
+	{
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("pipes", &i830_pwdoms_pipes),
+		),
+		.ops = &i830_pipes_power_well_ops,
+	},
+};
+
+static const struct i915_power_well_desc_list i830_power_wells[] = {
+	I915_PW_DESCRIPTORS(i9xx_power_wells_always_on),
+	I915_PW_DESCRIPTORS(i830_power_wells_main),
+};
+
+I915_DECL_PW_DOMAINS(hsw_pwdoms_display,
+	POWER_DOMAIN_PIPE_B,
+	POWER_DOMAIN_PIPE_C,
+	POWER_DOMAIN_PIPE_PANEL_FITTER_A,
+	POWER_DOMAIN_PIPE_PANEL_FITTER_B,
+	POWER_DOMAIN_PIPE_PANEL_FITTER_C,
+	POWER_DOMAIN_TRANSCODER_A,
+	POWER_DOMAIN_TRANSCODER_B,
+	POWER_DOMAIN_TRANSCODER_C,
+	POWER_DOMAIN_PORT_DDI_LANES_B,
+	POWER_DOMAIN_PORT_DDI_LANES_C,
+	POWER_DOMAIN_PORT_DDI_LANES_D,
+	POWER_DOMAIN_PORT_CRT, /* DDI E */
+	POWER_DOMAIN_VGA,
+	POWER_DOMAIN_AUDIO_MMIO,
+	POWER_DOMAIN_AUDIO_PLAYBACK,
+	POWER_DOMAIN_INIT);
+
+static const struct i915_power_well_desc hsw_power_wells_main[] = {
+	{
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("display", &hsw_pwdoms_display,
+				.hsw.idx = HSW_PW_CTL_IDX_GLOBAL,
+				.id = HSW_DISP_PW_GLOBAL),
+		),
+		.ops = &hsw_power_well_ops,
+		.has_vga = true,
+	},
+};
+
+static const struct i915_power_well_desc_list hsw_power_wells[] = {
+	I915_PW_DESCRIPTORS(i9xx_power_wells_always_on),
+	I915_PW_DESCRIPTORS(hsw_power_wells_main),
+};
+
+I915_DECL_PW_DOMAINS(bdw_pwdoms_display,
+	POWER_DOMAIN_PIPE_B,
+	POWER_DOMAIN_PIPE_C,
+	POWER_DOMAIN_PIPE_PANEL_FITTER_B,
+	POWER_DOMAIN_PIPE_PANEL_FITTER_C,
+	POWER_DOMAIN_TRANSCODER_A,
+	POWER_DOMAIN_TRANSCODER_B,
+	POWER_DOMAIN_TRANSCODER_C,
+	POWER_DOMAIN_PORT_DDI_LANES_B,
+	POWER_DOMAIN_PORT_DDI_LANES_C,
+	POWER_DOMAIN_PORT_DDI_LANES_D,
+	POWER_DOMAIN_PORT_CRT, /* DDI E */
+	POWER_DOMAIN_VGA,
+	POWER_DOMAIN_AUDIO_MMIO,
+	POWER_DOMAIN_AUDIO_PLAYBACK,
+	POWER_DOMAIN_INIT);
+
+static const struct i915_power_well_desc bdw_power_wells_main[] = {
+	{
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("display", &bdw_pwdoms_display,
+				.hsw.idx = HSW_PW_CTL_IDX_GLOBAL,
+				.id = HSW_DISP_PW_GLOBAL),
+		),
+		.ops = &hsw_power_well_ops,
+		.has_vga = true,
+		.irq_pipe_mask = BIT(PIPE_B) | BIT(PIPE_C),
+	},
+};
+
+static const struct i915_power_well_desc_list bdw_power_wells[] = {
+	I915_PW_DESCRIPTORS(i9xx_power_wells_always_on),
+	I915_PW_DESCRIPTORS(bdw_power_wells_main),
+};
+
+I915_DECL_PW_DOMAINS(vlv_pwdoms_display,
+	POWER_DOMAIN_DISPLAY_CORE,
+	POWER_DOMAIN_PIPE_A,
+	POWER_DOMAIN_PIPE_B,
+	POWER_DOMAIN_PIPE_PANEL_FITTER_A,
+	POWER_DOMAIN_PIPE_PANEL_FITTER_B,
+	POWER_DOMAIN_TRANSCODER_A,
+	POWER_DOMAIN_TRANSCODER_B,
+	POWER_DOMAIN_PORT_DDI_LANES_B,
+	POWER_DOMAIN_PORT_DDI_LANES_C,
+	POWER_DOMAIN_PORT_DSI,
+	POWER_DOMAIN_PORT_CRT,
+	POWER_DOMAIN_VGA,
+	POWER_DOMAIN_AUDIO_MMIO,
+	POWER_DOMAIN_AUDIO_PLAYBACK,
+	POWER_DOMAIN_AUX_B,
+	POWER_DOMAIN_AUX_C,
+	POWER_DOMAIN_GMBUS,
+	POWER_DOMAIN_INIT);
+
+I915_DECL_PW_DOMAINS(vlv_pwdoms_dpio_cmn_bc,
+	POWER_DOMAIN_PORT_DDI_LANES_B,
+	POWER_DOMAIN_PORT_DDI_LANES_C,
+	POWER_DOMAIN_PORT_CRT,
+	POWER_DOMAIN_AUX_B,
+	POWER_DOMAIN_AUX_C,
+	POWER_DOMAIN_INIT);
+
+I915_DECL_PW_DOMAINS(vlv_pwdoms_dpio_tx_bc_lanes,
+	POWER_DOMAIN_PORT_DDI_LANES_B,
+	POWER_DOMAIN_PORT_DDI_LANES_C,
+	POWER_DOMAIN_AUX_B,
+	POWER_DOMAIN_AUX_C,
+	POWER_DOMAIN_INIT);
+
+static const struct i915_power_well_desc vlv_power_wells_main[] = {
+	{
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("display", &vlv_pwdoms_display,
+				.vlv.idx = PUNIT_PWGT_IDX_DISP2D,
+				.id = VLV_DISP_PW_DISP2D),
+		),
+		.ops = &vlv_display_power_well_ops,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("dpio-tx-b-01", &vlv_pwdoms_dpio_tx_bc_lanes,
+				.vlv.idx = PUNIT_PWGT_IDX_DPIO_TX_B_LANES_01),
+			I915_PW("dpio-tx-b-23", &vlv_pwdoms_dpio_tx_bc_lanes,
+				.vlv.idx = PUNIT_PWGT_IDX_DPIO_TX_B_LANES_23),
+			I915_PW("dpio-tx-c-01", &vlv_pwdoms_dpio_tx_bc_lanes,
+				.vlv.idx = PUNIT_PWGT_IDX_DPIO_TX_C_LANES_01),
+			I915_PW("dpio-tx-c-23", &vlv_pwdoms_dpio_tx_bc_lanes,
+				.vlv.idx = PUNIT_PWGT_IDX_DPIO_TX_C_LANES_23),
+		),
+		.ops = &vlv_dpio_power_well_ops,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("dpio-common", &vlv_pwdoms_dpio_cmn_bc,
+				.vlv.idx = PUNIT_PWGT_IDX_DPIO_CMN_BC,
+				.id = VLV_DISP_PW_DPIO_CMN_BC),
+		),
+		.ops = &vlv_dpio_cmn_power_well_ops,
+	},
+};
+
+static const struct i915_power_well_desc_list vlv_power_wells[] = {
+	I915_PW_DESCRIPTORS(i9xx_power_wells_always_on),
+	I915_PW_DESCRIPTORS(vlv_power_wells_main),
+};
+
+I915_DECL_PW_DOMAINS(chv_pwdoms_display,
+	POWER_DOMAIN_DISPLAY_CORE,
+	POWER_DOMAIN_PIPE_A,
+	POWER_DOMAIN_PIPE_B,
+	POWER_DOMAIN_PIPE_C,
+	POWER_DOMAIN_PIPE_PANEL_FITTER_A,
+	POWER_DOMAIN_PIPE_PANEL_FITTER_B,
+	POWER_DOMAIN_PIPE_PANEL_FITTER_C,
+	POWER_DOMAIN_TRANSCODER_A,
+	POWER_DOMAIN_TRANSCODER_B,
+	POWER_DOMAIN_TRANSCODER_C,
+	POWER_DOMAIN_PORT_DDI_LANES_B,
+	POWER_DOMAIN_PORT_DDI_LANES_C,
+	POWER_DOMAIN_PORT_DDI_LANES_D,
+	POWER_DOMAIN_PORT_DSI,
+	POWER_DOMAIN_VGA,
+	POWER_DOMAIN_AUDIO_MMIO,
+	POWER_DOMAIN_AUDIO_PLAYBACK,
+	POWER_DOMAIN_AUX_B,
+	POWER_DOMAIN_AUX_C,
+	POWER_DOMAIN_AUX_D,
+	POWER_DOMAIN_GMBUS,
+	POWER_DOMAIN_INIT);
+
+I915_DECL_PW_DOMAINS(chv_pwdoms_dpio_cmn_bc,
+	POWER_DOMAIN_PORT_DDI_LANES_B,
+	POWER_DOMAIN_PORT_DDI_LANES_C,
+	POWER_DOMAIN_AUX_B,
+	POWER_DOMAIN_AUX_C,
+	POWER_DOMAIN_INIT);
+
+I915_DECL_PW_DOMAINS(chv_pwdoms_dpio_cmn_d,
+	POWER_DOMAIN_PORT_DDI_LANES_D,
+	POWER_DOMAIN_AUX_D,
+	POWER_DOMAIN_INIT);
+
+static const struct i915_power_well_desc chv_power_wells_main[] = {
+	{
+		/*
+		 * Pipe A power well is the new disp2d well. Pipe B and C
+		 * power wells don't actually exist. Pipe A power well is
+		 * required for any pipe to work.
+		 */
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("display", &chv_pwdoms_display),
+		),
+		.ops = &chv_pipe_power_well_ops,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("dpio-common-bc", &chv_pwdoms_dpio_cmn_bc,
+				.vlv.idx = PUNIT_PWGT_IDX_DPIO_CMN_BC,
+				.id = VLV_DISP_PW_DPIO_CMN_BC),
+			I915_PW("dpio-common-d", &chv_pwdoms_dpio_cmn_d,
+				.vlv.idx = PUNIT_PWGT_IDX_DPIO_CMN_D,
+				.id = CHV_DISP_PW_DPIO_CMN_D),
+		),
+		.ops = &chv_dpio_cmn_power_well_ops,
+	},
+};
+
+static const struct i915_power_well_desc_list chv_power_wells[] = {
+	I915_PW_DESCRIPTORS(i9xx_power_wells_always_on),
+	I915_PW_DESCRIPTORS(chv_power_wells_main),
+};
+
+#define SKL_PW_2_POWER_DOMAINS \
+	POWER_DOMAIN_PIPE_B, \
+	POWER_DOMAIN_PIPE_C, \
+	POWER_DOMAIN_PIPE_PANEL_FITTER_B, \
+	POWER_DOMAIN_PIPE_PANEL_FITTER_C, \
+	POWER_DOMAIN_TRANSCODER_A, \
+	POWER_DOMAIN_TRANSCODER_B, \
+	POWER_DOMAIN_TRANSCODER_C, \
+	POWER_DOMAIN_PORT_DDI_LANES_B, \
+	POWER_DOMAIN_PORT_DDI_LANES_C, \
+	POWER_DOMAIN_PORT_DDI_LANES_D, \
+	POWER_DOMAIN_PORT_DDI_LANES_E, \
+	POWER_DOMAIN_VGA, \
+	POWER_DOMAIN_AUDIO_MMIO, \
+	POWER_DOMAIN_AUDIO_PLAYBACK, \
+	POWER_DOMAIN_AUX_B, \
+	POWER_DOMAIN_AUX_C, \
+	POWER_DOMAIN_AUX_D
+
+I915_DECL_PW_DOMAINS(skl_pwdoms_pw_2,
+	SKL_PW_2_POWER_DOMAINS,
+	POWER_DOMAIN_INIT);
+
+I915_DECL_PW_DOMAINS(skl_pwdoms_dc_off,
+	SKL_PW_2_POWER_DOMAINS,
+	POWER_DOMAIN_AUX_A,
+	POWER_DOMAIN_MODESET,
+	POWER_DOMAIN_GT_IRQ,
+	POWER_DOMAIN_INIT);
+
+I915_DECL_PW_DOMAINS(skl_pwdoms_ddi_io_a_e,
+	POWER_DOMAIN_PORT_DDI_IO_A,
+	POWER_DOMAIN_PORT_DDI_IO_E,
+	POWER_DOMAIN_INIT);
+
+I915_DECL_PW_DOMAINS(skl_pwdoms_ddi_io_b,
+	POWER_DOMAIN_PORT_DDI_IO_B,
+	POWER_DOMAIN_INIT);
+
+I915_DECL_PW_DOMAINS(skl_pwdoms_ddi_io_c,
+	POWER_DOMAIN_PORT_DDI_IO_C,
+	POWER_DOMAIN_INIT);
+
+I915_DECL_PW_DOMAINS(skl_pwdoms_ddi_io_d,
+	POWER_DOMAIN_PORT_DDI_IO_D,
+	POWER_DOMAIN_INIT);
+
+static const struct i915_power_well_desc skl_power_wells_pw_1[] = {
+	{
+		/* Handled by the DMC firmware */
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("PW_1", I915_PW_DOMAINS_NONE,
+				.hsw.idx = SKL_PW_CTL_IDX_PW_1,
+				.id = SKL_DISP_PW_1),
+		),
+		.ops = &hsw_power_well_ops,
+		.always_on = true,
+		.has_fuses = true,
+	},
+};
+
+static const struct i915_power_well_desc skl_power_wells_main[] = {
+	{
+		/* Handled by the DMC firmware */
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("MISC_IO", I915_PW_DOMAINS_NONE,
+				.hsw.idx = SKL_PW_CTL_IDX_MISC_IO,
+				.id = SKL_DISP_PW_MISC_IO),
+		),
+		.ops = &hsw_power_well_ops,
+		.always_on = true,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("DC_off", &skl_pwdoms_dc_off,
+				.id = SKL_DISP_DC_OFF),
+		),
+		.ops = &gen9_dc_off_power_well_ops,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("PW_2", &skl_pwdoms_pw_2,
+				.hsw.idx = SKL_PW_CTL_IDX_PW_2,
+				.id = SKL_DISP_PW_2),
+		),
+		.ops = &hsw_power_well_ops,
+		.has_vga = true,
+		.irq_pipe_mask = BIT(PIPE_B) | BIT(PIPE_C),
+		.has_fuses = true,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("DDI_IO_A_E", &skl_pwdoms_ddi_io_a_e, .hsw.idx = SKL_PW_CTL_IDX_DDI_A_E),
+			I915_PW("DDI_IO_B", &skl_pwdoms_ddi_io_b, .hsw.idx = SKL_PW_CTL_IDX_DDI_B),
+			I915_PW("DDI_IO_C", &skl_pwdoms_ddi_io_c, .hsw.idx = SKL_PW_CTL_IDX_DDI_C),
+			I915_PW("DDI_IO_D", &skl_pwdoms_ddi_io_d, .hsw.idx = SKL_PW_CTL_IDX_DDI_D),
+		),
+		.ops = &hsw_power_well_ops,
+	},
+};
+
+static const struct i915_power_well_desc_list skl_power_wells[] = {
+	I915_PW_DESCRIPTORS(i9xx_power_wells_always_on),
+	I915_PW_DESCRIPTORS(skl_power_wells_pw_1),
+	I915_PW_DESCRIPTORS(skl_power_wells_main),
+};
+
+#define BXT_PW_2_POWER_DOMAINS \
+	POWER_DOMAIN_PIPE_B, \
+	POWER_DOMAIN_PIPE_C, \
+	POWER_DOMAIN_PIPE_PANEL_FITTER_B, \
+	POWER_DOMAIN_PIPE_PANEL_FITTER_C, \
+	POWER_DOMAIN_TRANSCODER_A, \
+	POWER_DOMAIN_TRANSCODER_B, \
+	POWER_DOMAIN_TRANSCODER_C, \
+	POWER_DOMAIN_PORT_DDI_LANES_B, \
+	POWER_DOMAIN_PORT_DDI_LANES_C, \
+	POWER_DOMAIN_VGA, \
+	POWER_DOMAIN_AUDIO_MMIO, \
+	POWER_DOMAIN_AUDIO_PLAYBACK, \
+	POWER_DOMAIN_AUX_B, \
+	POWER_DOMAIN_AUX_C
+
+I915_DECL_PW_DOMAINS(bxt_pwdoms_pw_2,
+	BXT_PW_2_POWER_DOMAINS,
+	POWER_DOMAIN_INIT);
+
+I915_DECL_PW_DOMAINS(bxt_pwdoms_dc_off,
+	BXT_PW_2_POWER_DOMAINS,
+	POWER_DOMAIN_AUX_A,
+	POWER_DOMAIN_GMBUS,
+	POWER_DOMAIN_MODESET,
+	POWER_DOMAIN_GT_IRQ,
+	POWER_DOMAIN_INIT);
+
+I915_DECL_PW_DOMAINS(bxt_pwdoms_dpio_cmn_a,
+	POWER_DOMAIN_PORT_DDI_LANES_A,
+	POWER_DOMAIN_AUX_A,
+	POWER_DOMAIN_INIT);
+
+I915_DECL_PW_DOMAINS(bxt_pwdoms_dpio_cmn_bc,
+	POWER_DOMAIN_PORT_DDI_LANES_B,
+	POWER_DOMAIN_PORT_DDI_LANES_C,
+	POWER_DOMAIN_AUX_B,
+	POWER_DOMAIN_AUX_C,
+	POWER_DOMAIN_INIT);
+
+static const struct i915_power_well_desc bxt_power_wells_main[] = {
+	{
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("DC_off", &bxt_pwdoms_dc_off,
+				.id = SKL_DISP_DC_OFF),
+		),
+		.ops = &gen9_dc_off_power_well_ops,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("PW_2", &bxt_pwdoms_pw_2,
+				.hsw.idx = SKL_PW_CTL_IDX_PW_2,
+				.id = SKL_DISP_PW_2),
+		),
+		.ops = &hsw_power_well_ops,
+		.has_vga = true,
+		.irq_pipe_mask = BIT(PIPE_B) | BIT(PIPE_C),
+		.has_fuses = true,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("dpio-common-a", &bxt_pwdoms_dpio_cmn_a,
+				.bxt.phy = DPIO_PHY1,
+				.id = BXT_DISP_PW_DPIO_CMN_A),
+			I915_PW("dpio-common-bc", &bxt_pwdoms_dpio_cmn_bc,
+				.bxt.phy = DPIO_PHY0,
+				.id = VLV_DISP_PW_DPIO_CMN_BC),
+		),
+		.ops = &bxt_dpio_cmn_power_well_ops,
+	},
+};
+
+static const struct i915_power_well_desc_list bxt_power_wells[] = {
+	I915_PW_DESCRIPTORS(i9xx_power_wells_always_on),
+	I915_PW_DESCRIPTORS(skl_power_wells_pw_1),
+	I915_PW_DESCRIPTORS(bxt_power_wells_main),
+};
+
+#define GLK_PW_2_POWER_DOMAINS \
+	POWER_DOMAIN_PIPE_B, \
+	POWER_DOMAIN_PIPE_C, \
+	POWER_DOMAIN_PIPE_PANEL_FITTER_B, \
+	POWER_DOMAIN_PIPE_PANEL_FITTER_C, \
+	POWER_DOMAIN_TRANSCODER_A, \
+	POWER_DOMAIN_TRANSCODER_B, \
+	POWER_DOMAIN_TRANSCODER_C, \
+	POWER_DOMAIN_PORT_DDI_LANES_B, \
+	POWER_DOMAIN_PORT_DDI_LANES_C, \
+	POWER_DOMAIN_VGA, \
+	POWER_DOMAIN_AUDIO_MMIO, \
+	POWER_DOMAIN_AUDIO_PLAYBACK, \
+	POWER_DOMAIN_AUX_B, \
+	POWER_DOMAIN_AUX_C
+
+I915_DECL_PW_DOMAINS(glk_pwdoms_pw_2,
+	GLK_PW_2_POWER_DOMAINS,
+	POWER_DOMAIN_INIT);
+
+I915_DECL_PW_DOMAINS(glk_pwdoms_dc_off,
+	GLK_PW_2_POWER_DOMAINS,
+	POWER_DOMAIN_AUX_A,
+	POWER_DOMAIN_GMBUS,
+	POWER_DOMAIN_MODESET,
+	POWER_DOMAIN_GT_IRQ,
+	POWER_DOMAIN_INIT);
+
+I915_DECL_PW_DOMAINS(glk_pwdoms_ddi_io_a,	POWER_DOMAIN_PORT_DDI_IO_A);
+I915_DECL_PW_DOMAINS(glk_pwdoms_ddi_io_b,	POWER_DOMAIN_PORT_DDI_IO_B);
+I915_DECL_PW_DOMAINS(glk_pwdoms_ddi_io_c,	POWER_DOMAIN_PORT_DDI_IO_C);
+
+I915_DECL_PW_DOMAINS(glk_pwdoms_dpio_cmn_a,
+	POWER_DOMAIN_PORT_DDI_LANES_A,
+	POWER_DOMAIN_AUX_A,
+	POWER_DOMAIN_INIT);
+
+I915_DECL_PW_DOMAINS(glk_pwdoms_dpio_cmn_b,
+	POWER_DOMAIN_PORT_DDI_LANES_B,
+	POWER_DOMAIN_AUX_B,
+	POWER_DOMAIN_INIT);
+
+I915_DECL_PW_DOMAINS(glk_pwdoms_dpio_cmn_c,
+	POWER_DOMAIN_PORT_DDI_LANES_C,
+	POWER_DOMAIN_AUX_C,
+	POWER_DOMAIN_INIT);
+
+I915_DECL_PW_DOMAINS(glk_pwdoms_aux_a,
+	POWER_DOMAIN_AUX_A,
+	POWER_DOMAIN_AUX_IO_A,
+	POWER_DOMAIN_INIT);
+
+I915_DECL_PW_DOMAINS(glk_pwdoms_aux_b,
+	POWER_DOMAIN_AUX_B,
+	POWER_DOMAIN_INIT);
+
+I915_DECL_PW_DOMAINS(glk_pwdoms_aux_c,
+	POWER_DOMAIN_AUX_C,
+	POWER_DOMAIN_INIT);
+
+static const struct i915_power_well_desc glk_power_wells_main[] = {
+	{
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("DC_off", &glk_pwdoms_dc_off,
+				.id = SKL_DISP_DC_OFF),
+		),
+		.ops = &gen9_dc_off_power_well_ops,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("PW_2", &glk_pwdoms_pw_2,
+				.hsw.idx = SKL_PW_CTL_IDX_PW_2,
+				.id = SKL_DISP_PW_2),
+		),
+		.ops = &hsw_power_well_ops,
+		.has_vga = true,
+		.irq_pipe_mask = BIT(PIPE_B) | BIT(PIPE_C),
+		.has_fuses = true,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("dpio-common-a", &glk_pwdoms_dpio_cmn_a,
+				.bxt.phy = DPIO_PHY1,
+				.id = BXT_DISP_PW_DPIO_CMN_A),
+			I915_PW("dpio-common-b", &glk_pwdoms_dpio_cmn_b,
+				.bxt.phy = DPIO_PHY0,
+				.id = VLV_DISP_PW_DPIO_CMN_BC),
+			I915_PW("dpio-common-c", &glk_pwdoms_dpio_cmn_c,
+				.bxt.phy = DPIO_PHY2,
+				.id = GLK_DISP_PW_DPIO_CMN_C),
+		),
+		.ops = &bxt_dpio_cmn_power_well_ops,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("AUX_A", &glk_pwdoms_aux_a, .hsw.idx = GLK_PW_CTL_IDX_AUX_A),
+			I915_PW("AUX_B", &glk_pwdoms_aux_b, .hsw.idx = GLK_PW_CTL_IDX_AUX_B),
+			I915_PW("AUX_C", &glk_pwdoms_aux_c, .hsw.idx = GLK_PW_CTL_IDX_AUX_C),
+			I915_PW("DDI_IO_A", &glk_pwdoms_ddi_io_a, .hsw.idx = GLK_PW_CTL_IDX_DDI_A),
+			I915_PW("DDI_IO_B", &glk_pwdoms_ddi_io_b, .hsw.idx = SKL_PW_CTL_IDX_DDI_B),
+			I915_PW("DDI_IO_C", &glk_pwdoms_ddi_io_c, .hsw.idx = SKL_PW_CTL_IDX_DDI_C),
+		),
+		.ops = &hsw_power_well_ops,
+	},
+};
+
+static const struct i915_power_well_desc_list glk_power_wells[] = {
+	I915_PW_DESCRIPTORS(i9xx_power_wells_always_on),
+	I915_PW_DESCRIPTORS(skl_power_wells_pw_1),
+	I915_PW_DESCRIPTORS(glk_power_wells_main),
+};
+
+/*
+ * ICL PW_0/PG_0 domains (HW/DMC control):
+ * - PCI
+ * - clocks except port PLL
+ * - central power except FBC
+ * - shared functions except pipe interrupts, pipe MBUS, DBUF registers
+ * ICL PW_1/PG_1 domains (HW/DMC control):
+ * - DBUF function
+ * - PIPE_A and its planes, except VGA
+ * - transcoder EDP + PSR
+ * - transcoder DSI
+ * - DDI_A
+ * - FBC
+ */
+#define ICL_PW_4_POWER_DOMAINS \
+	POWER_DOMAIN_PIPE_C, \
+	POWER_DOMAIN_PIPE_PANEL_FITTER_C
+
+I915_DECL_PW_DOMAINS(icl_pwdoms_pw_4,
+	ICL_PW_4_POWER_DOMAINS,
+	POWER_DOMAIN_INIT);
+	/* VDSC/joining */
+
+#define ICL_PW_3_POWER_DOMAINS \
+	ICL_PW_4_POWER_DOMAINS, \
+	POWER_DOMAIN_PIPE_B, \
+	POWER_DOMAIN_PIPE_PANEL_FITTER_B, \
+	POWER_DOMAIN_TRANSCODER_A, \
+	POWER_DOMAIN_TRANSCODER_B, \
+	POWER_DOMAIN_TRANSCODER_C, \
+	POWER_DOMAIN_PORT_DDI_LANES_B, \
+	POWER_DOMAIN_PORT_DDI_LANES_C, \
+	POWER_DOMAIN_PORT_DDI_LANES_D, \
+	POWER_DOMAIN_PORT_DDI_LANES_E, \
+	POWER_DOMAIN_PORT_DDI_LANES_F, \
+	POWER_DOMAIN_VGA, \
+	POWER_DOMAIN_AUDIO_MMIO, \
+	POWER_DOMAIN_AUDIO_PLAYBACK, \
+	POWER_DOMAIN_AUX_B, \
+	POWER_DOMAIN_AUX_C, \
+	POWER_DOMAIN_AUX_D, \
+	POWER_DOMAIN_AUX_E, \
+	POWER_DOMAIN_AUX_F, \
+	POWER_DOMAIN_AUX_TBT1, \
+	POWER_DOMAIN_AUX_TBT2, \
+	POWER_DOMAIN_AUX_TBT3, \
+	POWER_DOMAIN_AUX_TBT4
+
+I915_DECL_PW_DOMAINS(icl_pwdoms_pw_3,
+	ICL_PW_3_POWER_DOMAINS,
+	POWER_DOMAIN_INIT);
+	/*
+	 * - transcoder WD
+	 * - KVMR (HW control)
+	 */
+
+#define ICL_PW_2_POWER_DOMAINS \
+	ICL_PW_3_POWER_DOMAINS, \
+	POWER_DOMAIN_TRANSCODER_VDSC_PW2
+
+I915_DECL_PW_DOMAINS(icl_pwdoms_pw_2,
+	ICL_PW_2_POWER_DOMAINS,
+	POWER_DOMAIN_INIT);
+	/*
+	 * - KVMR (HW control)
+	 */
+
+I915_DECL_PW_DOMAINS(icl_pwdoms_dc_off,
+	ICL_PW_2_POWER_DOMAINS,
+	POWER_DOMAIN_AUX_A,
+	POWER_DOMAIN_MODESET,
+	POWER_DOMAIN_DC_OFF,
+	POWER_DOMAIN_INIT);
+
+I915_DECL_PW_DOMAINS(icl_pwdoms_ddi_io_d,	POWER_DOMAIN_PORT_DDI_IO_D);
+I915_DECL_PW_DOMAINS(icl_pwdoms_ddi_io_e,	POWER_DOMAIN_PORT_DDI_IO_E);
+I915_DECL_PW_DOMAINS(icl_pwdoms_ddi_io_f,	POWER_DOMAIN_PORT_DDI_IO_F);
+
+I915_DECL_PW_DOMAINS(icl_pwdoms_aux_a,
+	POWER_DOMAIN_AUX_A,
+	POWER_DOMAIN_AUX_IO_A);
+I915_DECL_PW_DOMAINS(icl_pwdoms_aux_b,		POWER_DOMAIN_AUX_B);
+I915_DECL_PW_DOMAINS(icl_pwdoms_aux_c,		POWER_DOMAIN_AUX_C);
+I915_DECL_PW_DOMAINS(icl_pwdoms_aux_d,		POWER_DOMAIN_AUX_D);
+I915_DECL_PW_DOMAINS(icl_pwdoms_aux_e,		POWER_DOMAIN_AUX_E);
+I915_DECL_PW_DOMAINS(icl_pwdoms_aux_f,		POWER_DOMAIN_AUX_F);
+I915_DECL_PW_DOMAINS(icl_pwdoms_aux_tbt1,	POWER_DOMAIN_AUX_TBT1);
+I915_DECL_PW_DOMAINS(icl_pwdoms_aux_tbt2,	POWER_DOMAIN_AUX_TBT2);
+I915_DECL_PW_DOMAINS(icl_pwdoms_aux_tbt3,	POWER_DOMAIN_AUX_TBT3);
+I915_DECL_PW_DOMAINS(icl_pwdoms_aux_tbt4,	POWER_DOMAIN_AUX_TBT4);
+
+static const struct i915_power_well_desc icl_power_wells_pw_1[] = {
+	{
+		/* Handled by the DMC firmware */
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("PW_1", I915_PW_DOMAINS_NONE,
+				.hsw.idx = ICL_PW_CTL_IDX_PW_1,
+				.id = SKL_DISP_PW_1),
+		),
+		.ops = &hsw_power_well_ops,
+		.always_on = true,
+		.has_fuses = true,
+	},
+};
+
+static const struct i915_power_well_desc icl_power_wells_main[] = {
+	{
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("DC_off", &icl_pwdoms_dc_off,
+				.id = SKL_DISP_DC_OFF),
+		),
+		.ops = &gen9_dc_off_power_well_ops,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("PW_2", &icl_pwdoms_pw_2,
+				.hsw.idx = ICL_PW_CTL_IDX_PW_2,
+				.id = SKL_DISP_PW_2),
+		),
+		.ops = &hsw_power_well_ops,
+		.has_fuses = true,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("PW_3", &icl_pwdoms_pw_3,
+				.hsw.idx = ICL_PW_CTL_IDX_PW_3,
+				.id = ICL_DISP_PW_3),
+		),
+		.ops = &hsw_power_well_ops,
+		.has_vga = true,
+		.irq_pipe_mask = BIT(PIPE_B),
+		.has_fuses = true,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("DDI_IO_A", &glk_pwdoms_ddi_io_a, .hsw.idx = ICL_PW_CTL_IDX_DDI_A),
+			I915_PW("DDI_IO_B", &glk_pwdoms_ddi_io_b, .hsw.idx = ICL_PW_CTL_IDX_DDI_B),
+			I915_PW("DDI_IO_C", &glk_pwdoms_ddi_io_c, .hsw.idx = ICL_PW_CTL_IDX_DDI_C),
+			I915_PW("DDI_IO_D", &icl_pwdoms_ddi_io_d, .hsw.idx = ICL_PW_CTL_IDX_DDI_D),
+			I915_PW("DDI_IO_E", &icl_pwdoms_ddi_io_e, .hsw.idx = ICL_PW_CTL_IDX_DDI_E),
+			I915_PW("DDI_IO_F", &icl_pwdoms_ddi_io_f, .hsw.idx = ICL_PW_CTL_IDX_DDI_F),
+		),
+		.ops = &icl_ddi_power_well_ops,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("AUX_A", &icl_pwdoms_aux_a, .hsw.idx = ICL_PW_CTL_IDX_AUX_A),
+			I915_PW("AUX_B", &icl_pwdoms_aux_b, .hsw.idx = ICL_PW_CTL_IDX_AUX_B),
+			I915_PW("AUX_C", &icl_pwdoms_aux_c, .hsw.idx = ICL_PW_CTL_IDX_AUX_C),
+			I915_PW("AUX_D", &icl_pwdoms_aux_d, .hsw.idx = ICL_PW_CTL_IDX_AUX_D),
+			I915_PW("AUX_E", &icl_pwdoms_aux_e, .hsw.idx = ICL_PW_CTL_IDX_AUX_E),
+			I915_PW("AUX_F", &icl_pwdoms_aux_f, .hsw.idx = ICL_PW_CTL_IDX_AUX_F),
+		),
+		.ops = &icl_aux_power_well_ops,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("AUX_TBT1", &icl_pwdoms_aux_tbt1, .hsw.idx = ICL_PW_CTL_IDX_AUX_TBT1),
+			I915_PW("AUX_TBT2", &icl_pwdoms_aux_tbt2, .hsw.idx = ICL_PW_CTL_IDX_AUX_TBT2),
+			I915_PW("AUX_TBT3", &icl_pwdoms_aux_tbt3, .hsw.idx = ICL_PW_CTL_IDX_AUX_TBT3),
+			I915_PW("AUX_TBT4", &icl_pwdoms_aux_tbt4, .hsw.idx = ICL_PW_CTL_IDX_AUX_TBT4),
+		),
+		.ops = &icl_aux_power_well_ops,
+		.is_tc_tbt = true,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("PW_4", &icl_pwdoms_pw_4,
+				.hsw.idx = ICL_PW_CTL_IDX_PW_4),
+		),
+		.ops = &hsw_power_well_ops,
+		.irq_pipe_mask = BIT(PIPE_C),
+		.has_fuses = true,
+	},
+};
+
+static const struct i915_power_well_desc_list icl_power_wells[] = {
+	I915_PW_DESCRIPTORS(i9xx_power_wells_always_on),
+	I915_PW_DESCRIPTORS(icl_power_wells_pw_1),
+	I915_PW_DESCRIPTORS(icl_power_wells_main),
+};
+
+#define TGL_PW_5_POWER_DOMAINS \
+	POWER_DOMAIN_PIPE_D, \
+	POWER_DOMAIN_PIPE_PANEL_FITTER_D, \
+	POWER_DOMAIN_TRANSCODER_D
+
+I915_DECL_PW_DOMAINS(tgl_pwdoms_pw_5,
+	TGL_PW_5_POWER_DOMAINS,
+	POWER_DOMAIN_INIT);
+
+#define TGL_PW_4_POWER_DOMAINS \
+	TGL_PW_5_POWER_DOMAINS, \
+	POWER_DOMAIN_PIPE_C, \
+	POWER_DOMAIN_PIPE_PANEL_FITTER_C, \
+	POWER_DOMAIN_TRANSCODER_C
+
+I915_DECL_PW_DOMAINS(tgl_pwdoms_pw_4,
+	TGL_PW_4_POWER_DOMAINS,
+	POWER_DOMAIN_INIT);
+
+#define TGL_PW_3_POWER_DOMAINS \
+	TGL_PW_4_POWER_DOMAINS, \
+	POWER_DOMAIN_PIPE_B, \
+	POWER_DOMAIN_PIPE_PANEL_FITTER_B, \
+	POWER_DOMAIN_TRANSCODER_B, \
+	POWER_DOMAIN_PORT_DDI_LANES_TC1, \
+	POWER_DOMAIN_PORT_DDI_LANES_TC2, \
+	POWER_DOMAIN_PORT_DDI_LANES_TC3, \
+	POWER_DOMAIN_PORT_DDI_LANES_TC4, \
+	POWER_DOMAIN_PORT_DDI_LANES_TC5, \
+	POWER_DOMAIN_PORT_DDI_LANES_TC6, \
+	POWER_DOMAIN_VGA, \
+	POWER_DOMAIN_AUDIO_MMIO, \
+	POWER_DOMAIN_AUDIO_PLAYBACK, \
+	POWER_DOMAIN_AUX_USBC1, \
+	POWER_DOMAIN_AUX_USBC2, \
+	POWER_DOMAIN_AUX_USBC3, \
+	POWER_DOMAIN_AUX_USBC4, \
+	POWER_DOMAIN_AUX_USBC5, \
+	POWER_DOMAIN_AUX_USBC6, \
+	POWER_DOMAIN_AUX_TBT1, \
+	POWER_DOMAIN_AUX_TBT2, \
+	POWER_DOMAIN_AUX_TBT3, \
+	POWER_DOMAIN_AUX_TBT4, \
+	POWER_DOMAIN_AUX_TBT5, \
+	POWER_DOMAIN_AUX_TBT6
+
+I915_DECL_PW_DOMAINS(tgl_pwdoms_pw_3,
+	TGL_PW_3_POWER_DOMAINS,
+	POWER_DOMAIN_INIT);
+
+I915_DECL_PW_DOMAINS(tgl_pwdoms_pw_2,
+	TGL_PW_3_POWER_DOMAINS,
+	POWER_DOMAIN_TRANSCODER_VDSC_PW2,
+	POWER_DOMAIN_INIT);
+
+I915_DECL_PW_DOMAINS(tgl_pwdoms_dc_off,
+	TGL_PW_3_POWER_DOMAINS,
+	POWER_DOMAIN_AUX_A,
+	POWER_DOMAIN_AUX_B,
+	POWER_DOMAIN_AUX_C,
+	POWER_DOMAIN_MODESET,
+	POWER_DOMAIN_INIT);
+
+I915_DECL_PW_DOMAINS(tgl_pwdoms_ddi_io_tc1,	POWER_DOMAIN_PORT_DDI_IO_TC1);
+I915_DECL_PW_DOMAINS(tgl_pwdoms_ddi_io_tc2,	POWER_DOMAIN_PORT_DDI_IO_TC2);
+I915_DECL_PW_DOMAINS(tgl_pwdoms_ddi_io_tc3,	POWER_DOMAIN_PORT_DDI_IO_TC3);
+I915_DECL_PW_DOMAINS(tgl_pwdoms_ddi_io_tc4,	POWER_DOMAIN_PORT_DDI_IO_TC4);
+I915_DECL_PW_DOMAINS(tgl_pwdoms_ddi_io_tc5,	POWER_DOMAIN_PORT_DDI_IO_TC5);
+I915_DECL_PW_DOMAINS(tgl_pwdoms_ddi_io_tc6,	POWER_DOMAIN_PORT_DDI_IO_TC6);
+
+I915_DECL_PW_DOMAINS(tgl_pwdoms_aux_usbc1,	POWER_DOMAIN_AUX_USBC1);
+I915_DECL_PW_DOMAINS(tgl_pwdoms_aux_usbc2,	POWER_DOMAIN_AUX_USBC2);
+I915_DECL_PW_DOMAINS(tgl_pwdoms_aux_usbc3,	POWER_DOMAIN_AUX_USBC3);
+I915_DECL_PW_DOMAINS(tgl_pwdoms_aux_usbc4,	POWER_DOMAIN_AUX_USBC4);
+I915_DECL_PW_DOMAINS(tgl_pwdoms_aux_usbc5,	POWER_DOMAIN_AUX_USBC5);
+I915_DECL_PW_DOMAINS(tgl_pwdoms_aux_usbc6,	POWER_DOMAIN_AUX_USBC6);
+
+I915_DECL_PW_DOMAINS(tgl_pwdoms_aux_tbt5,	POWER_DOMAIN_AUX_TBT5);
+I915_DECL_PW_DOMAINS(tgl_pwdoms_aux_tbt6,	POWER_DOMAIN_AUX_TBT6);
+
+I915_DECL_PW_DOMAINS(tgl_pwdoms_tc_cold_off,
+	POWER_DOMAIN_AUX_USBC1,
+	POWER_DOMAIN_AUX_USBC2,
+	POWER_DOMAIN_AUX_USBC3,
+	POWER_DOMAIN_AUX_USBC4,
+	POWER_DOMAIN_AUX_USBC5,
+	POWER_DOMAIN_AUX_USBC6,
+	POWER_DOMAIN_AUX_TBT1,
+	POWER_DOMAIN_AUX_TBT2,
+	POWER_DOMAIN_AUX_TBT3,
+	POWER_DOMAIN_AUX_TBT4,
+	POWER_DOMAIN_AUX_TBT5,
+	POWER_DOMAIN_AUX_TBT6,
+	POWER_DOMAIN_TC_COLD_OFF);
+
+static const struct i915_power_well_desc tgl_power_wells_main[] = {
+	{
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("DC_off", &tgl_pwdoms_dc_off,
+				.id = SKL_DISP_DC_OFF),
+		),
+		.ops = &gen9_dc_off_power_well_ops,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("PW_2", &tgl_pwdoms_pw_2,
+				.hsw.idx = ICL_PW_CTL_IDX_PW_2,
+				.id = SKL_DISP_PW_2),
+		),
+		.ops = &hsw_power_well_ops,
+		.has_fuses = true,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("PW_3", &tgl_pwdoms_pw_3,
+				.hsw.idx = ICL_PW_CTL_IDX_PW_3,
+				.id = ICL_DISP_PW_3),
+		),
+		.ops = &hsw_power_well_ops,
+		.has_vga = true,
+		.irq_pipe_mask = BIT(PIPE_B),
+		.has_fuses = true,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("DDI_IO_A", &glk_pwdoms_ddi_io_a, .hsw.idx = ICL_PW_CTL_IDX_DDI_A),
+			I915_PW("DDI_IO_B", &glk_pwdoms_ddi_io_b, .hsw.idx = ICL_PW_CTL_IDX_DDI_B),
+			I915_PW("DDI_IO_C", &glk_pwdoms_ddi_io_c, .hsw.idx = ICL_PW_CTL_IDX_DDI_C),
+			I915_PW("DDI_IO_TC1", &tgl_pwdoms_ddi_io_tc1, .hsw.idx = TGL_PW_CTL_IDX_DDI_TC1),
+			I915_PW("DDI_IO_TC2", &tgl_pwdoms_ddi_io_tc2, .hsw.idx = TGL_PW_CTL_IDX_DDI_TC2),
+			I915_PW("DDI_IO_TC3", &tgl_pwdoms_ddi_io_tc3, .hsw.idx = TGL_PW_CTL_IDX_DDI_TC3),
+			I915_PW("DDI_IO_TC4", &tgl_pwdoms_ddi_io_tc4, .hsw.idx = TGL_PW_CTL_IDX_DDI_TC4),
+			I915_PW("DDI_IO_TC5", &tgl_pwdoms_ddi_io_tc5, .hsw.idx = TGL_PW_CTL_IDX_DDI_TC5),
+			I915_PW("DDI_IO_TC6", &tgl_pwdoms_ddi_io_tc6, .hsw.idx = TGL_PW_CTL_IDX_DDI_TC6),
+		),
+		.ops = &icl_ddi_power_well_ops,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("PW_4", &tgl_pwdoms_pw_4,
+				.hsw.idx = ICL_PW_CTL_IDX_PW_4),
+		),
+		.ops = &hsw_power_well_ops,
+		.has_fuses = true,
+		.irq_pipe_mask = BIT(PIPE_C),
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("PW_5", &tgl_pwdoms_pw_5,
+				.hsw.idx = TGL_PW_CTL_IDX_PW_5),
+		),
+		.ops = &hsw_power_well_ops,
+		.has_fuses = true,
+		.irq_pipe_mask = BIT(PIPE_D),
+	},
+};
+
+static const struct i915_power_well_desc tgl_power_wells_tc_cold_off[] = {
+	{
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("TC_cold_off", &tgl_pwdoms_tc_cold_off,
+				.id = TGL_DISP_PW_TC_COLD_OFF),
+		),
+		.ops = &tgl_tc_cold_off_ops,
+	},
+};
+
+static const struct i915_power_well_desc tgl_power_wells_aux[] = {
+	{
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("AUX_A", &icl_pwdoms_aux_a, .hsw.idx = ICL_PW_CTL_IDX_AUX_A),
+			I915_PW("AUX_B", &icl_pwdoms_aux_b, .hsw.idx = ICL_PW_CTL_IDX_AUX_B),
+			I915_PW("AUX_C", &icl_pwdoms_aux_c, .hsw.idx = ICL_PW_CTL_IDX_AUX_C),
+			I915_PW("AUX_USBC1", &tgl_pwdoms_aux_usbc1, .hsw.idx = TGL_PW_CTL_IDX_AUX_TC1),
+			I915_PW("AUX_USBC2", &tgl_pwdoms_aux_usbc2, .hsw.idx = TGL_PW_CTL_IDX_AUX_TC2),
+			I915_PW("AUX_USBC3", &tgl_pwdoms_aux_usbc3, .hsw.idx = TGL_PW_CTL_IDX_AUX_TC3),
+			I915_PW("AUX_USBC4", &tgl_pwdoms_aux_usbc4, .hsw.idx = TGL_PW_CTL_IDX_AUX_TC4),
+			I915_PW("AUX_USBC5", &tgl_pwdoms_aux_usbc5, .hsw.idx = TGL_PW_CTL_IDX_AUX_TC5),
+			I915_PW("AUX_USBC6", &tgl_pwdoms_aux_usbc6, .hsw.idx = TGL_PW_CTL_IDX_AUX_TC6),
+		),
+		.ops = &icl_aux_power_well_ops,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("AUX_TBT1", &icl_pwdoms_aux_tbt1, .hsw.idx = TGL_PW_CTL_IDX_AUX_TBT1),
+			I915_PW("AUX_TBT2", &icl_pwdoms_aux_tbt2, .hsw.idx = TGL_PW_CTL_IDX_AUX_TBT2),
+			I915_PW("AUX_TBT3", &icl_pwdoms_aux_tbt3, .hsw.idx = TGL_PW_CTL_IDX_AUX_TBT3),
+			I915_PW("AUX_TBT4", &icl_pwdoms_aux_tbt4, .hsw.idx = TGL_PW_CTL_IDX_AUX_TBT4),
+			I915_PW("AUX_TBT5", &tgl_pwdoms_aux_tbt5, .hsw.idx = TGL_PW_CTL_IDX_AUX_TBT5),
+			I915_PW("AUX_TBT6", &tgl_pwdoms_aux_tbt6, .hsw.idx = TGL_PW_CTL_IDX_AUX_TBT6),
+		),
+		.ops = &icl_aux_power_well_ops,
+		.is_tc_tbt = true,
+	},
+};
+
+static const struct i915_power_well_desc_list tgl_power_wells[] = {
+	I915_PW_DESCRIPTORS(i9xx_power_wells_always_on),
+	I915_PW_DESCRIPTORS(icl_power_wells_pw_1),
+	I915_PW_DESCRIPTORS(tgl_power_wells_main),
+	I915_PW_DESCRIPTORS(tgl_power_wells_tc_cold_off),
+	I915_PW_DESCRIPTORS(tgl_power_wells_aux),
+};
+
+static const struct i915_power_well_desc_list adls_power_wells[] = {
+	I915_PW_DESCRIPTORS(i9xx_power_wells_always_on),
+	I915_PW_DESCRIPTORS(icl_power_wells_pw_1),
+	I915_PW_DESCRIPTORS(tgl_power_wells_main),
+	I915_PW_DESCRIPTORS(tgl_power_wells_aux),
+};
+
+#define RKL_PW_4_POWER_DOMAINS \
+	POWER_DOMAIN_PIPE_C, \
+	POWER_DOMAIN_PIPE_PANEL_FITTER_C, \
+	POWER_DOMAIN_TRANSCODER_C
+
+I915_DECL_PW_DOMAINS(rkl_pwdoms_pw_4,
+	RKL_PW_4_POWER_DOMAINS,
+	POWER_DOMAIN_INIT);
+
+#define RKL_PW_3_POWER_DOMAINS \
+	RKL_PW_4_POWER_DOMAINS, \
+	POWER_DOMAIN_PIPE_B, \
+	POWER_DOMAIN_PIPE_PANEL_FITTER_B, \
+	POWER_DOMAIN_TRANSCODER_B, \
+	POWER_DOMAIN_PORT_DDI_LANES_TC1, \
+	POWER_DOMAIN_PORT_DDI_LANES_TC2, \
+	POWER_DOMAIN_VGA, \
+	POWER_DOMAIN_AUDIO_MMIO, \
+	POWER_DOMAIN_AUDIO_PLAYBACK, \
+	POWER_DOMAIN_AUX_USBC1, \
+	POWER_DOMAIN_AUX_USBC2
+
+I915_DECL_PW_DOMAINS(rkl_pwdoms_pw_3,
+	RKL_PW_3_POWER_DOMAINS,
+	POWER_DOMAIN_INIT);
+
+/*
+ * There is no PW_2/PG_2 on RKL.
+ *
+ * RKL PW_1/PG_1 domains (under HW/DMC control):
+ * - DBUF function (note: registers are in PW0)
+ * - PIPE_A and its planes and VDSC/joining, except VGA
+ * - transcoder A
+ * - DDI_A and DDI_B
+ * - FBC
+ *
+ * RKL PW_0/PG_0 domains (under HW/DMC control):
+ * - PCI
+ * - clocks except port PLL
+ * - shared functions:
+ *     * interrupts except pipe interrupts
+ *     * MBus except PIPE_MBUS_DBOX_CTL
+ *     * DBUF registers
+ * - central power except FBC
+ * - top-level GTC (DDI-level GTC is in the well associated with the DDI)
+ */
+
+I915_DECL_PW_DOMAINS(rkl_pwdoms_dc_off,
+	RKL_PW_3_POWER_DOMAINS,
+	POWER_DOMAIN_AUX_A,
+	POWER_DOMAIN_AUX_B,
+	POWER_DOMAIN_MODESET,
+	POWER_DOMAIN_INIT);
+
+static const struct i915_power_well_desc rkl_power_wells_main[] = {
+	{
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("DC_off", &rkl_pwdoms_dc_off,
+				.id = SKL_DISP_DC_OFF),
+		),
+		.ops = &gen9_dc_off_power_well_ops,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("PW_3", &rkl_pwdoms_pw_3,
+				.hsw.idx = ICL_PW_CTL_IDX_PW_3,
+				.id = ICL_DISP_PW_3),
+		),
+		.ops = &hsw_power_well_ops,
+		.irq_pipe_mask = BIT(PIPE_B),
+		.has_vga = true,
+		.has_fuses = true,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("PW_4", &rkl_pwdoms_pw_4,
+				.hsw.idx = ICL_PW_CTL_IDX_PW_4),
+		),
+		.ops = &hsw_power_well_ops,
+		.has_fuses = true,
+		.irq_pipe_mask = BIT(PIPE_C),
+	},
+};
+
+static const struct i915_power_well_desc rkl_power_wells_ddi_aux[] = {
+	{
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("DDI_IO_A", &glk_pwdoms_ddi_io_a, .hsw.idx = ICL_PW_CTL_IDX_DDI_A),
+			I915_PW("DDI_IO_B", &glk_pwdoms_ddi_io_b, .hsw.idx = ICL_PW_CTL_IDX_DDI_B),
+			I915_PW("DDI_IO_TC1", &tgl_pwdoms_ddi_io_tc1, .hsw.idx = TGL_PW_CTL_IDX_DDI_TC1),
+			I915_PW("DDI_IO_TC2", &tgl_pwdoms_ddi_io_tc2, .hsw.idx = TGL_PW_CTL_IDX_DDI_TC2),
+		),
+		.ops = &icl_ddi_power_well_ops,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("AUX_A", &icl_pwdoms_aux_a, .hsw.idx = ICL_PW_CTL_IDX_AUX_A),
+			I915_PW("AUX_B", &icl_pwdoms_aux_b, .hsw.idx = ICL_PW_CTL_IDX_AUX_B),
+			I915_PW("AUX_USBC1", &tgl_pwdoms_aux_usbc1, .hsw.idx = TGL_PW_CTL_IDX_AUX_TC1),
+			I915_PW("AUX_USBC2", &tgl_pwdoms_aux_usbc2, .hsw.idx = TGL_PW_CTL_IDX_AUX_TC2),
+		),
+		.ops = &icl_aux_power_well_ops,
+	},
+};
+
+static const struct i915_power_well_desc_list rkl_power_wells[] = {
+	I915_PW_DESCRIPTORS(i9xx_power_wells_always_on),
+	I915_PW_DESCRIPTORS(icl_power_wells_pw_1),
+	I915_PW_DESCRIPTORS(rkl_power_wells_main),
+	I915_PW_DESCRIPTORS(rkl_power_wells_ddi_aux),
+};
+
+/*
+ * DG1 onwards Audio MMIO/VERBS lies in PG0 power well.
+ */
+#define DG1_PW_3_POWER_DOMAINS \
+	TGL_PW_4_POWER_DOMAINS, \
+	POWER_DOMAIN_PIPE_B, \
+	POWER_DOMAIN_PIPE_PANEL_FITTER_B, \
+	POWER_DOMAIN_TRANSCODER_B, \
+	POWER_DOMAIN_PORT_DDI_LANES_TC1, \
+	POWER_DOMAIN_PORT_DDI_LANES_TC2, \
+	POWER_DOMAIN_VGA, \
+	POWER_DOMAIN_AUDIO_PLAYBACK, \
+	POWER_DOMAIN_AUX_USBC1, \
+	POWER_DOMAIN_AUX_USBC2
+
+I915_DECL_PW_DOMAINS(dg1_pwdoms_pw_3,
+	DG1_PW_3_POWER_DOMAINS,
+	POWER_DOMAIN_INIT);
+
+I915_DECL_PW_DOMAINS(dg1_pwdoms_dc_off,
+	DG1_PW_3_POWER_DOMAINS,
+	POWER_DOMAIN_AUDIO_MMIO,
+	POWER_DOMAIN_AUX_A,
+	POWER_DOMAIN_AUX_B,
+	POWER_DOMAIN_MODESET,
+	POWER_DOMAIN_INIT);
+
+I915_DECL_PW_DOMAINS(dg1_pwdoms_pw_2,
+	DG1_PW_3_POWER_DOMAINS,
+	POWER_DOMAIN_TRANSCODER_VDSC_PW2,
+	POWER_DOMAIN_INIT);
+
+static const struct i915_power_well_desc dg1_power_wells_main[] = {
+	{
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("DC_off", &dg1_pwdoms_dc_off,
+				.id = SKL_DISP_DC_OFF),
+		),
+		.ops = &gen9_dc_off_power_well_ops,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("PW_2", &dg1_pwdoms_pw_2,
+				.hsw.idx = ICL_PW_CTL_IDX_PW_2,
+				.id = SKL_DISP_PW_2),
+		),
+		.ops = &hsw_power_well_ops,
+		.has_fuses = true,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("PW_3", &dg1_pwdoms_pw_3,
+				.hsw.idx = ICL_PW_CTL_IDX_PW_3,
+				.id = ICL_DISP_PW_3),
+		),
+		.ops = &hsw_power_well_ops,
+		.irq_pipe_mask = BIT(PIPE_B),
+		.has_vga = true,
+		.has_fuses = true,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("PW_4", &tgl_pwdoms_pw_4,
+				.hsw.idx = ICL_PW_CTL_IDX_PW_4),
+		),
+		.ops = &hsw_power_well_ops,
+		.has_fuses = true,
+		.irq_pipe_mask = BIT(PIPE_C),
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("PW_5", &tgl_pwdoms_pw_5,
+				.hsw.idx = TGL_PW_CTL_IDX_PW_5),
+		),
+		.ops = &hsw_power_well_ops,
+		.has_fuses = true,
+		.irq_pipe_mask = BIT(PIPE_D),
+	},
+};
+
+static const struct i915_power_well_desc_list dg1_power_wells[] = {
+	I915_PW_DESCRIPTORS(i9xx_power_wells_always_on),
+	I915_PW_DESCRIPTORS(icl_power_wells_pw_1),
+	I915_PW_DESCRIPTORS(dg1_power_wells_main),
+	I915_PW_DESCRIPTORS(rkl_power_wells_ddi_aux),
+};
+
+/*
+ * XE_LPD Power Domains
+ *
+ * Previous platforms required that PG(n-1) be enabled before PG(n).  That
+ * dependency chain turns into a dependency tree on XE_LPD:
+ *
+ *       PG0
+ *        |
+ *     --PG1--
+ *    /       \
+ *  PGA     --PG2--
+ *         /   |   \
+ *       PGB  PGC  PGD
+ *
+ * Power wells must be enabled from top to bottom and disabled from bottom
+ * to top.  This allows pipes to be power gated independently.
+ */
+
+#define XELPD_PW_D_POWER_DOMAINS \
+	POWER_DOMAIN_PIPE_D, \
+	POWER_DOMAIN_PIPE_PANEL_FITTER_D, \
+	POWER_DOMAIN_TRANSCODER_D
+
+I915_DECL_PW_DOMAINS(xelpd_pwdoms_pw_d,
+	XELPD_PW_D_POWER_DOMAINS,
+	POWER_DOMAIN_INIT);
+
+#define XELPD_PW_C_POWER_DOMAINS \
+	POWER_DOMAIN_PIPE_C, \
+	POWER_DOMAIN_PIPE_PANEL_FITTER_C, \
+	POWER_DOMAIN_TRANSCODER_C
+
+I915_DECL_PW_DOMAINS(xelpd_pwdoms_pw_c,
+	XELPD_PW_C_POWER_DOMAINS,
+	POWER_DOMAIN_INIT);
+
+#define XELPD_PW_B_POWER_DOMAINS \
+	POWER_DOMAIN_PIPE_B, \
+	POWER_DOMAIN_PIPE_PANEL_FITTER_B, \
+	POWER_DOMAIN_TRANSCODER_B
+
+I915_DECL_PW_DOMAINS(xelpd_pwdoms_pw_b,
+	XELPD_PW_B_POWER_DOMAINS,
+	POWER_DOMAIN_INIT);
+
+I915_DECL_PW_DOMAINS(xelpd_pwdoms_pw_a,
+	POWER_DOMAIN_PIPE_A,
+	POWER_DOMAIN_PIPE_PANEL_FITTER_A,
+	POWER_DOMAIN_INIT);
+
+#define XELPD_PW_2_POWER_DOMAINS \
+	XELPD_PW_B_POWER_DOMAINS, \
+	XELPD_PW_C_POWER_DOMAINS, \
+	XELPD_PW_D_POWER_DOMAINS, \
+	POWER_DOMAIN_PORT_DDI_LANES_C, \
+	POWER_DOMAIN_PORT_DDI_LANES_D, \
+	POWER_DOMAIN_PORT_DDI_LANES_E, \
+	POWER_DOMAIN_PORT_DDI_LANES_TC1, \
+	POWER_DOMAIN_PORT_DDI_LANES_TC2, \
+	POWER_DOMAIN_PORT_DDI_LANES_TC3, \
+	POWER_DOMAIN_PORT_DDI_LANES_TC4, \
+	POWER_DOMAIN_VGA, \
+	POWER_DOMAIN_AUDIO_PLAYBACK, \
+	POWER_DOMAIN_AUX_C, \
+	POWER_DOMAIN_AUX_D, \
+	POWER_DOMAIN_AUX_E, \
+	POWER_DOMAIN_AUX_USBC1, \
+	POWER_DOMAIN_AUX_USBC2, \
+	POWER_DOMAIN_AUX_USBC3, \
+	POWER_DOMAIN_AUX_USBC4, \
+	POWER_DOMAIN_AUX_TBT1, \
+	POWER_DOMAIN_AUX_TBT2, \
+	POWER_DOMAIN_AUX_TBT3, \
+	POWER_DOMAIN_AUX_TBT4
+
+I915_DECL_PW_DOMAINS(xelpd_pwdoms_pw_2,
+	XELPD_PW_2_POWER_DOMAINS,
+	POWER_DOMAIN_INIT);
+
+/*
+ * XELPD PW_1/PG_1 domains (under HW/DMC control):
+ *  - DBUF function (registers are in PW0)
+ *  - Transcoder A
+ *  - DDI_A and DDI_B
+ *
+ * XELPD PW_0/PW_1 domains (under HW/DMC control):
+ *  - PCI
+ *  - Clocks except port PLL
+ *  - Shared functions:
+ *     * interrupts except pipe interrupts
+ *     * MBus except PIPE_MBUS_DBOX_CTL
+ *     * DBUF registers
+ *  - Central power except FBC
+ *  - Top-level GTC (DDI-level GTC is in the well associated with the DDI)
+ */
+
+I915_DECL_PW_DOMAINS(xelpd_pwdoms_dc_off,
+	XELPD_PW_2_POWER_DOMAINS,
+	POWER_DOMAIN_PORT_DSI,
+	POWER_DOMAIN_AUDIO_MMIO,
+	POWER_DOMAIN_AUX_A,
+	POWER_DOMAIN_AUX_B,
+	POWER_DOMAIN_MODESET,
+	POWER_DOMAIN_INIT);
+
+static const struct i915_power_well_desc xelpd_power_wells_main[] = {
+	{
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("DC_off", &xelpd_pwdoms_dc_off,
+				.id = SKL_DISP_DC_OFF),
+		),
+		.ops = &gen9_dc_off_power_well_ops,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("PW_2", &xelpd_pwdoms_pw_2,
+				.hsw.idx = ICL_PW_CTL_IDX_PW_2,
+				.id = SKL_DISP_PW_2),
+		),
+		.ops = &hsw_power_well_ops,
+		.has_vga = true,
+		.has_fuses = true,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("PW_A", &xelpd_pwdoms_pw_a,
+				.hsw.idx = XELPD_PW_CTL_IDX_PW_A),
+		),
+		.ops = &hsw_power_well_ops,
+		.irq_pipe_mask = BIT(PIPE_A),
+		.has_fuses = true,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("PW_B", &xelpd_pwdoms_pw_b,
+				.hsw.idx = XELPD_PW_CTL_IDX_PW_B),
+		),
+		.ops = &hsw_power_well_ops,
+		.irq_pipe_mask = BIT(PIPE_B),
+		.has_fuses = true,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("PW_C", &xelpd_pwdoms_pw_c,
+				.hsw.idx = XELPD_PW_CTL_IDX_PW_C),
+		),
+		.ops = &hsw_power_well_ops,
+		.irq_pipe_mask = BIT(PIPE_C),
+		.has_fuses = true,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("PW_D", &xelpd_pwdoms_pw_d,
+				.hsw.idx = XELPD_PW_CTL_IDX_PW_D),
+		),
+		.ops = &hsw_power_well_ops,
+		.irq_pipe_mask = BIT(PIPE_D),
+		.has_fuses = true,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("DDI_IO_A", &glk_pwdoms_ddi_io_a, .hsw.idx = ICL_PW_CTL_IDX_DDI_A),
+			I915_PW("DDI_IO_B", &glk_pwdoms_ddi_io_b, .hsw.idx = ICL_PW_CTL_IDX_DDI_B),
+			I915_PW("DDI_IO_C", &glk_pwdoms_ddi_io_c, .hsw.idx = ICL_PW_CTL_IDX_DDI_C),
+			I915_PW("DDI_IO_D", &icl_pwdoms_ddi_io_d, .hsw.idx = XELPD_PW_CTL_IDX_DDI_D),
+			I915_PW("DDI_IO_E", &icl_pwdoms_ddi_io_e, .hsw.idx = XELPD_PW_CTL_IDX_DDI_E),
+			I915_PW("DDI_IO_TC1", &tgl_pwdoms_ddi_io_tc1, .hsw.idx = TGL_PW_CTL_IDX_DDI_TC1),
+			I915_PW("DDI_IO_TC2", &tgl_pwdoms_ddi_io_tc2, .hsw.idx = TGL_PW_CTL_IDX_DDI_TC2),
+			I915_PW("DDI_IO_TC3", &tgl_pwdoms_ddi_io_tc3, .hsw.idx = TGL_PW_CTL_IDX_DDI_TC3),
+			I915_PW("DDI_IO_TC4", &tgl_pwdoms_ddi_io_tc4, .hsw.idx = TGL_PW_CTL_IDX_DDI_TC4),
+		),
+		.ops = &icl_ddi_power_well_ops,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("AUX_A", &icl_pwdoms_aux_a, .hsw.idx = ICL_PW_CTL_IDX_AUX_A),
+			I915_PW("AUX_B", &icl_pwdoms_aux_b, .hsw.idx = ICL_PW_CTL_IDX_AUX_B),
+			I915_PW("AUX_C", &icl_pwdoms_aux_c, .hsw.idx = ICL_PW_CTL_IDX_AUX_C),
+			I915_PW("AUX_D", &icl_pwdoms_aux_d, .hsw.idx = XELPD_PW_CTL_IDX_AUX_D),
+			I915_PW("AUX_E", &icl_pwdoms_aux_e, .hsw.idx = XELPD_PW_CTL_IDX_AUX_E),
+			I915_PW("AUX_USBC1", &tgl_pwdoms_aux_usbc1, .hsw.idx = TGL_PW_CTL_IDX_AUX_TC1),
+			I915_PW("AUX_USBC2", &tgl_pwdoms_aux_usbc2, .hsw.idx = TGL_PW_CTL_IDX_AUX_TC2),
+			I915_PW("AUX_USBC3", &tgl_pwdoms_aux_usbc3, .hsw.idx = TGL_PW_CTL_IDX_AUX_TC3),
+			I915_PW("AUX_USBC4", &tgl_pwdoms_aux_usbc4, .hsw.idx = TGL_PW_CTL_IDX_AUX_TC4),
+		),
+		.ops = &icl_aux_power_well_ops,
+		.fixed_enable_delay = true,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("AUX_TBT1", &icl_pwdoms_aux_tbt1, .hsw.idx = TGL_PW_CTL_IDX_AUX_TBT1),
+			I915_PW("AUX_TBT2", &icl_pwdoms_aux_tbt2, .hsw.idx = TGL_PW_CTL_IDX_AUX_TBT2),
+			I915_PW("AUX_TBT3", &icl_pwdoms_aux_tbt3, .hsw.idx = TGL_PW_CTL_IDX_AUX_TBT3),
+			I915_PW("AUX_TBT4", &icl_pwdoms_aux_tbt4, .hsw.idx = TGL_PW_CTL_IDX_AUX_TBT4),
+		),
+		.ops = &icl_aux_power_well_ops,
+		.is_tc_tbt = true,
+	},
+};
+
+static const struct i915_power_well_desc_list xelpd_power_wells[] = {
+	I915_PW_DESCRIPTORS(i9xx_power_wells_always_on),
+	I915_PW_DESCRIPTORS(icl_power_wells_pw_1),
+	I915_PW_DESCRIPTORS(xelpd_power_wells_main),
+};
+
+/*
+ * MTL is based on XELPD power domains with the exception of power gating for:
+ * - DDI_IO (moved to PLL logic)
+ * - AUX and AUX_IO functionality and register access for USBC1-4 (PICA always-on)
+ */
+#define XELPDP_PW_2_POWER_DOMAINS \
+	XELPD_PW_B_POWER_DOMAINS, \
+	XELPD_PW_C_POWER_DOMAINS, \
+	XELPD_PW_D_POWER_DOMAINS, \
+	POWER_DOMAIN_AUDIO_PLAYBACK, \
+	POWER_DOMAIN_VGA, \
+	POWER_DOMAIN_PORT_DDI_LANES_TC1, \
+	POWER_DOMAIN_PORT_DDI_LANES_TC2, \
+	POWER_DOMAIN_PORT_DDI_LANES_TC3, \
+	POWER_DOMAIN_PORT_DDI_LANES_TC4
+
+I915_DECL_PW_DOMAINS(xelpdp_pwdoms_pw_2,
+	XELPDP_PW_2_POWER_DOMAINS,
+	POWER_DOMAIN_INIT);
+
+I915_DECL_PW_DOMAINS(xelpdp_pwdoms_dc_off,
+	XELPDP_PW_2_POWER_DOMAINS,
+	POWER_DOMAIN_AUDIO_MMIO,
+	POWER_DOMAIN_MODESET,
+	POWER_DOMAIN_AUX_A,
+	POWER_DOMAIN_AUX_B,
+	POWER_DOMAIN_INIT);
+
+I915_DECL_PW_DOMAINS(xelpdp_pwdoms_aux_tc1,
+	POWER_DOMAIN_AUX_USBC1,
+	POWER_DOMAIN_AUX_TBT1);
+
+I915_DECL_PW_DOMAINS(xelpdp_pwdoms_aux_tc2,
+	POWER_DOMAIN_AUX_USBC2,
+	POWER_DOMAIN_AUX_TBT2);
+
+I915_DECL_PW_DOMAINS(xelpdp_pwdoms_aux_tc3,
+	POWER_DOMAIN_AUX_USBC3,
+	POWER_DOMAIN_AUX_TBT3);
+
+I915_DECL_PW_DOMAINS(xelpdp_pwdoms_aux_tc4,
+	POWER_DOMAIN_AUX_USBC4,
+	POWER_DOMAIN_AUX_TBT4);
+
+static const struct i915_power_well_desc xelpdp_power_wells_main[] = {
+	{
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("DC_off", &xelpdp_pwdoms_dc_off,
+				.id = SKL_DISP_DC_OFF),
+		),
+		.ops = &gen9_dc_off_power_well_ops,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("PW_2", &xelpdp_pwdoms_pw_2,
+				.hsw.idx = ICL_PW_CTL_IDX_PW_2,
+				.id = SKL_DISP_PW_2),
+		),
+		.ops = &hsw_power_well_ops,
+		.has_vga = true,
+		.has_fuses = true,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("PW_A", &xelpd_pwdoms_pw_a,
+				.hsw.idx = XELPD_PW_CTL_IDX_PW_A),
+		),
+		.ops = &hsw_power_well_ops,
+		.irq_pipe_mask = BIT(PIPE_A),
+		.has_fuses = true,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("PW_B", &xelpd_pwdoms_pw_b,
+				.hsw.idx = XELPD_PW_CTL_IDX_PW_B),
+		),
+		.ops = &hsw_power_well_ops,
+		.irq_pipe_mask = BIT(PIPE_B),
+		.has_fuses = true,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("PW_C", &xelpd_pwdoms_pw_c,
+				.hsw.idx = XELPD_PW_CTL_IDX_PW_C),
+		),
+		.ops = &hsw_power_well_ops,
+		.irq_pipe_mask = BIT(PIPE_C),
+		.has_fuses = true,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("PW_D", &xelpd_pwdoms_pw_d,
+				.hsw.idx = XELPD_PW_CTL_IDX_PW_D),
+		),
+		.ops = &hsw_power_well_ops,
+		.irq_pipe_mask = BIT(PIPE_D),
+		.has_fuses = true,
+	}, {
+		.instances = &I915_PW_INSTANCES(
+			I915_PW("AUX_A", &icl_pwdoms_aux_a, .xelpdp.aux_ch = AUX_CH_A),
+			I915_PW("AUX_B", &icl_pwdoms_aux_b, .xelpdp.aux_ch = AUX_CH_B),
+			I915_PW("AUX_TC1", &xelpdp_pwdoms_aux_tc1, .xelpdp.aux_ch = AUX_CH_USBC1),
+			I915_PW("AUX_TC2", &xelpdp_pwdoms_aux_tc2, .xelpdp.aux_ch = AUX_CH_USBC2),
+			I915_PW("AUX_TC3", &xelpdp_pwdoms_aux_tc3, .xelpdp.aux_ch = AUX_CH_USBC3),
+			I915_PW("AUX_TC4", &xelpdp_pwdoms_aux_tc4, .xelpdp.aux_ch = AUX_CH_USBC4),
+		),
+		.ops = &xelpdp_aux_power_well_ops,
+	},
+};
+
+static const struct i915_power_well_desc_list xelpdp_power_wells[] = {
+	I915_PW_DESCRIPTORS(i9xx_power_wells_always_on),
+	I915_PW_DESCRIPTORS(icl_power_wells_pw_1),
+	I915_PW_DESCRIPTORS(xelpdp_power_wells_main),
+};
+
+static void init_power_well_domains(const struct i915_power_well_instance *inst,
+				    struct i915_power_well *power_well)
+{
+	int j;
+
+	if (!inst->domain_list)
+		return;
+
+	if (inst->domain_list->count == 0) {
+		bitmap_fill(power_well->domains.bits, POWER_DOMAIN_NUM);
+
+		return;
+	}
+
+	for (j = 0; j < inst->domain_list->count; j++)
+		set_bit(inst->domain_list->list[j], power_well->domains.bits);
+}
+
+#define for_each_power_well_instance_in_desc_list(_desc_list, _desc_count, _desc, _inst) \
+	for ((_desc) = (_desc_list); (_desc) - (_desc_list) < (_desc_count); (_desc)++) \
+		for ((_inst) = (_desc)->instances->list; \
+		     (_inst) - (_desc)->instances->list < (_desc)->instances->count; \
+		     (_inst)++)
+
+#define for_each_power_well_instance(_desc_list, _desc_count, _descs, _desc, _inst) \
+	for ((_descs) = (_desc_list); \
+	     (_descs) - (_desc_list) < (_desc_count); \
+	     (_descs)++) \
+		for_each_power_well_instance_in_desc_list((_descs)->list, (_descs)->count, \
+							  (_desc), (_inst))
+
+static int
+__set_power_wells(struct i915_power_domains *power_domains,
+		  const struct i915_power_well_desc_list *power_well_descs,
+		  int power_well_descs_sz)
+{
+	struct drm_i915_private *i915 = container_of(power_domains,
+						     struct drm_i915_private,
+						     display.power.domains);
+	u64 power_well_ids = 0;
+	const struct i915_power_well_desc_list *desc_list;
+	const struct i915_power_well_desc *desc;
+	const struct i915_power_well_instance *inst;
+	int power_well_count = 0;
+	int plt_idx = 0;
+
+	for_each_power_well_instance(power_well_descs, power_well_descs_sz, desc_list, desc, inst)
+		power_well_count++;
+
+	power_domains->power_well_count = power_well_count;
+	power_domains->power_wells =
+				kcalloc(power_well_count,
+					sizeof(*power_domains->power_wells),
+					GFP_KERNEL);
+	if (!power_domains->power_wells)
+		return -ENOMEM;
+
+	for_each_power_well_instance(power_well_descs, power_well_descs_sz, desc_list, desc, inst) {
+		struct i915_power_well *pw = &power_domains->power_wells[plt_idx];
+		enum i915_power_well_id id = inst->id;
+
+		pw->desc = desc;
+		drm_WARN_ON(&i915->drm,
+			    overflows_type(inst - desc->instances->list, pw->instance_idx));
+		pw->instance_idx = inst - desc->instances->list;
+
+		init_power_well_domains(inst, pw);
+
+		plt_idx++;
+
+		if (id == DISP_PW_ID_NONE)
+			continue;
+
+		drm_WARN_ON(&i915->drm, id >= sizeof(power_well_ids) * 8);
+		drm_WARN_ON(&i915->drm, power_well_ids & BIT_ULL(id));
+		power_well_ids |= BIT_ULL(id);
+	}
+
+	return 0;
+}
+
+#define set_power_wells(power_domains, __power_well_descs) \
+	__set_power_wells(power_domains, __power_well_descs, \
+			  ARRAY_SIZE(__power_well_descs))
+
+/**
+ * intel_display_power_map_init - initialize power domain -> power well mappings
+ * @power_domains: power domain state
+ *
+ * Creates all the power wells for the current platform, initializes the
+ * dynamic state for them and initializes the mapping of each power well to
+ * all the power domains the power well belongs to.
+ */
+int intel_display_power_map_init(struct i915_power_domains *power_domains)
+{
+	struct drm_i915_private *i915 = container_of(power_domains,
+						     struct drm_i915_private,
+						     display.power.domains);
+	/*
+	 * The enabling order will be from lower to higher indexed wells,
+	 * the disabling order is reversed.
+	 */
+	if (!HAS_DISPLAY(i915)) {
+		power_domains->power_well_count = 0;
+		return 0;
+	}
+
+	if (DISPLAY_VER(i915) >= 14)
+		return set_power_wells(power_domains, xelpdp_power_wells);
+	else if (DISPLAY_VER(i915) >= 13)
+		return set_power_wells(power_domains, xelpd_power_wells);
+	else if (IS_DG1(i915))
+		return set_power_wells(power_domains, dg1_power_wells);
+	else if (IS_ALDERLAKE_S(i915))
+		return set_power_wells(power_domains, adls_power_wells);
+	else if (IS_ROCKETLAKE(i915))
+		return set_power_wells(power_domains, rkl_power_wells);
+	else if (DISPLAY_VER(i915) == 12)
+		return set_power_wells(power_domains, tgl_power_wells);
+	else if (DISPLAY_VER(i915) == 11)
+		return set_power_wells(power_domains, icl_power_wells);
+	else if (IS_GEMINILAKE(i915))
+		return set_power_wells(power_domains, glk_power_wells);
+	else if (IS_BROXTON(i915))
+		return set_power_wells(power_domains, bxt_power_wells);
+	else if (DISPLAY_VER(i915) == 9)
+		return set_power_wells(power_domains, skl_power_wells);
+	else if (IS_CHERRYVIEW(i915))
+		return set_power_wells(power_domains, chv_power_wells);
+	else if (IS_BROADWELL(i915))
+		return set_power_wells(power_domains, bdw_power_wells);
+	else if (IS_HASWELL(i915))
+		return set_power_wells(power_domains, hsw_power_wells);
+	else if (IS_VALLEYVIEW(i915))
+		return set_power_wells(power_domains, vlv_power_wells);
+	else if (IS_I830(i915))
+		return set_power_wells(power_domains, i830_power_wells);
+	else
+		return set_power_wells(power_domains, i9xx_power_wells);
+}
+
+/**
+ * intel_display_power_map_cleanup - clean up power domain -> power well mappings
+ * @power_domains: power domain state
+ *
+ * Cleans up all the state that was initialized by intel_display_power_map_init().
+ */
+void intel_display_power_map_cleanup(struct i915_power_domains *power_domains)
+{
+	kfree(power_domains->power_wells);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_display_power_map.h b/drivers/gpu/drm/i915/display/intel_display_power_map.h
new file mode 100644
index 000000000..da8f7055a
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_display_power_map.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#ifndef __INTEL_DISPLAY_POWER_MAP_H__
+#define __INTEL_DISPLAY_POWER_MAP_H__
+
+struct i915_power_domains;
+
+int intel_display_power_map_init(struct i915_power_domains *power_domains);
+void intel_display_power_map_cleanup(struct i915_power_domains *power_domains);
+
+#endif
diff --git a/drivers/gpu/drm/i915/display/intel_display_power_well.c b/drivers/gpu/drm/i915/display/intel_display_power_well.c
new file mode 100644
index 000000000..1d18eee56
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_display_power_well.c
@@ -0,0 +1,1956 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#include "i915_drv.h"
+#include "i915_irq.h"
+#include "intel_backlight_regs.h"
+#include "intel_combo_phy.h"
+#include "intel_combo_phy_regs.h"
+#include "intel_crt.h"
+#include "intel_de.h"
+#include "intel_display_power_well.h"
+#include "intel_display_types.h"
+#include "intel_dkl_phy.h"
+#include "intel_dmc.h"
+#include "intel_dpio_phy.h"
+#include "intel_dpll.h"
+#include "intel_hotplug.h"
+#include "intel_pcode.h"
+#include "intel_pps.h"
+#include "intel_tc.h"
+#include "intel_vga.h"
+#include "skl_watermark.h"
+#include "vlv_sideband.h"
+#include "vlv_sideband_reg.h"
+
+struct i915_power_well_regs {
+	i915_reg_t bios;
+	i915_reg_t driver;
+	i915_reg_t kvmr;
+	i915_reg_t debug;
+};
+
+struct i915_power_well_ops {
+	const struct i915_power_well_regs *regs;
+	/*
+	 * Synchronize the well's hw state to match the current sw state, for
+	 * example enable/disable it based on the current refcount. Called
+	 * during driver init and resume time, possibly after first calling
+	 * the enable/disable handlers.
+	 */
+	void (*sync_hw)(struct drm_i915_private *i915,
+			struct i915_power_well *power_well);
+	/*
+	 * Enable the well and resources that depend on it (for example
+	 * interrupts located on the well). Called after the 0->1 refcount
+	 * transition.
+	 */
+	void (*enable)(struct drm_i915_private *i915,
+		       struct i915_power_well *power_well);
+	/*
+	 * Disable the well and resources that depend on it. Called after
+	 * the 1->0 refcount transition.
+	 */
+	void (*disable)(struct drm_i915_private *i915,
+			struct i915_power_well *power_well);
+	/* Returns the hw enabled state. */
+	bool (*is_enabled)(struct drm_i915_private *i915,
+			   struct i915_power_well *power_well);
+};
+
+static const struct i915_power_well_instance *
+i915_power_well_instance(const struct i915_power_well *power_well)
+{
+	return &power_well->desc->instances->list[power_well->instance_idx];
+}
+
+struct i915_power_well *
+lookup_power_well(struct drm_i915_private *i915,
+		  enum i915_power_well_id power_well_id)
+{
+	struct i915_power_well *power_well;
+
+	for_each_power_well(i915, power_well)
+		if (i915_power_well_instance(power_well)->id == power_well_id)
+			return power_well;
+
+	/*
+	 * It's not feasible to add error checking code to the callers since
+	 * this condition really shouldn't happen and it doesn't even make sense
+	 * to abort things like display initialization sequences. Just return
+	 * the first power well and hope the WARN gets reported so we can fix
+	 * our driver.
+	 */
+	drm_WARN(&i915->drm, 1,
+		 "Power well %d not defined for this platform\n",
+		 power_well_id);
+	return &i915->display.power.domains.power_wells[0];
+}
+
+void intel_power_well_enable(struct drm_i915_private *i915,
+			     struct i915_power_well *power_well)
+{
+	drm_dbg_kms(&i915->drm, "enabling %s\n", intel_power_well_name(power_well));
+	power_well->desc->ops->enable(i915, power_well);
+	power_well->hw_enabled = true;
+}
+
+void intel_power_well_disable(struct drm_i915_private *i915,
+			      struct i915_power_well *power_well)
+{
+	drm_dbg_kms(&i915->drm, "disabling %s\n", intel_power_well_name(power_well));
+	power_well->hw_enabled = false;
+	power_well->desc->ops->disable(i915, power_well);
+}
+
+void intel_power_well_sync_hw(struct drm_i915_private *i915,
+			      struct i915_power_well *power_well)
+{
+	power_well->desc->ops->sync_hw(i915, power_well);
+	power_well->hw_enabled =
+		power_well->desc->ops->is_enabled(i915, power_well);
+}
+
+void intel_power_well_get(struct drm_i915_private *i915,
+			  struct i915_power_well *power_well)
+{
+	if (!power_well->count++)
+		intel_power_well_enable(i915, power_well);
+}
+
+void intel_power_well_put(struct drm_i915_private *i915,
+			  struct i915_power_well *power_well)
+{
+	drm_WARN(&i915->drm, !power_well->count,
+		 "Use count on power well %s is already zero",
+		 i915_power_well_instance(power_well)->name);
+
+	if (!--power_well->count)
+		intel_power_well_disable(i915, power_well);
+}
+
+bool intel_power_well_is_enabled(struct drm_i915_private *i915,
+				 struct i915_power_well *power_well)
+{
+	return power_well->desc->ops->is_enabled(i915, power_well);
+}
+
+bool intel_power_well_is_enabled_cached(struct i915_power_well *power_well)
+{
+	return power_well->hw_enabled;
+}
+
+bool intel_display_power_well_is_enabled(struct drm_i915_private *dev_priv,
+					 enum i915_power_well_id power_well_id)
+{
+	struct i915_power_well *power_well;
+
+	power_well = lookup_power_well(dev_priv, power_well_id);
+
+	return intel_power_well_is_enabled(dev_priv, power_well);
+}
+
+bool intel_power_well_is_always_on(struct i915_power_well *power_well)
+{
+	return power_well->desc->always_on;
+}
+
+const char *intel_power_well_name(struct i915_power_well *power_well)
+{
+	return i915_power_well_instance(power_well)->name;
+}
+
+struct intel_power_domain_mask *intel_power_well_domains(struct i915_power_well *power_well)
+{
+	return &power_well->domains;
+}
+
+int intel_power_well_refcount(struct i915_power_well *power_well)
+{
+	return power_well->count;
+}
+
+/*
+ * Starting with Haswell, we have a "Power Down Well" that can be turned off
+ * when not needed anymore. We have 4 registers that can request the power well
+ * to be enabled, and it will only be disabled if none of the registers is
+ * requesting it to be enabled.
+ */
+static void hsw_power_well_post_enable(struct drm_i915_private *dev_priv,
+				       u8 irq_pipe_mask, bool has_vga)
+{
+	if (has_vga)
+		intel_vga_reset_io_mem(dev_priv);
+
+	if (irq_pipe_mask)
+		gen8_irq_power_well_post_enable(dev_priv, irq_pipe_mask);
+}
+
+static void hsw_power_well_pre_disable(struct drm_i915_private *dev_priv,
+				       u8 irq_pipe_mask)
+{
+	if (irq_pipe_mask)
+		gen8_irq_power_well_pre_disable(dev_priv, irq_pipe_mask);
+}
+
+#define ICL_AUX_PW_TO_CH(pw_idx)	\
+	((pw_idx) - ICL_PW_CTL_IDX_AUX_A + AUX_CH_A)
+
+#define ICL_TBT_AUX_PW_TO_CH(pw_idx)	\
+	((pw_idx) - ICL_PW_CTL_IDX_AUX_TBT1 + AUX_CH_C)
+
+static enum aux_ch icl_aux_pw_to_ch(const struct i915_power_well *power_well)
+{
+	int pw_idx = i915_power_well_instance(power_well)->hsw.idx;
+
+	return power_well->desc->is_tc_tbt ? ICL_TBT_AUX_PW_TO_CH(pw_idx) :
+					     ICL_AUX_PW_TO_CH(pw_idx);
+}
+
+static struct intel_digital_port *
+aux_ch_to_digital_port(struct drm_i915_private *dev_priv,
+		       enum aux_ch aux_ch)
+{
+	struct intel_digital_port *dig_port = NULL;
+	struct intel_encoder *encoder;
+
+	for_each_intel_encoder(&dev_priv->drm, encoder) {
+		/* We'll check the MST primary port */
+		if (encoder->type == INTEL_OUTPUT_DP_MST)
+			continue;
+
+		dig_port = enc_to_dig_port(encoder);
+		if (!dig_port)
+			continue;
+
+		if (dig_port->aux_ch != aux_ch) {
+			dig_port = NULL;
+			continue;
+		}
+
+		break;
+	}
+
+	return dig_port;
+}
+
+static enum phy icl_aux_pw_to_phy(struct drm_i915_private *i915,
+				  const struct i915_power_well *power_well)
+{
+	enum aux_ch aux_ch = icl_aux_pw_to_ch(power_well);
+	struct intel_digital_port *dig_port = aux_ch_to_digital_port(i915, aux_ch);
+
+	return intel_port_to_phy(i915, dig_port->base.port);
+}
+
+static void hsw_wait_for_power_well_enable(struct drm_i915_private *dev_priv,
+					   struct i915_power_well *power_well,
+					   bool timeout_expected)
+{
+	const struct i915_power_well_regs *regs = power_well->desc->ops->regs;
+	int pw_idx = i915_power_well_instance(power_well)->hsw.idx;
+
+	/*
+	 * For some power wells we're not supposed to watch the status bit for
+	 * an ack, but rather just wait a fixed amount of time and then
+	 * proceed.  This is only used on DG2.
+	 */
+	if (IS_DG2(dev_priv) && power_well->desc->fixed_enable_delay) {
+		usleep_range(600, 1200);
+		return;
+	}
+
+	/* Timeout for PW1:10 us, AUX:not specified, other PWs:20 us. */
+	if (intel_de_wait_for_set(dev_priv, regs->driver,
+				  HSW_PWR_WELL_CTL_STATE(pw_idx), 1)) {
+		drm_dbg_kms(&dev_priv->drm, "%s power well enable timeout\n",
+			    intel_power_well_name(power_well));
+
+		drm_WARN_ON(&dev_priv->drm, !timeout_expected);
+
+	}
+}
+
+static u32 hsw_power_well_requesters(struct drm_i915_private *dev_priv,
+				     const struct i915_power_well_regs *regs,
+				     int pw_idx)
+{
+	u32 req_mask = HSW_PWR_WELL_CTL_REQ(pw_idx);
+	u32 ret;
+
+	ret = intel_de_read(dev_priv, regs->bios) & req_mask ? 1 : 0;
+	ret |= intel_de_read(dev_priv, regs->driver) & req_mask ? 2 : 0;
+	if (regs->kvmr.reg)
+		ret |= intel_de_read(dev_priv, regs->kvmr) & req_mask ? 4 : 0;
+	ret |= intel_de_read(dev_priv, regs->debug) & req_mask ? 8 : 0;
+
+	return ret;
+}
+
+static void hsw_wait_for_power_well_disable(struct drm_i915_private *dev_priv,
+					    struct i915_power_well *power_well)
+{
+	const struct i915_power_well_regs *regs = power_well->desc->ops->regs;
+	int pw_idx = i915_power_well_instance(power_well)->hsw.idx;
+	bool disabled;
+	u32 reqs;
+
+	/*
+	 * Bspec doesn't require waiting for PWs to get disabled, but still do
+	 * this for paranoia. The known cases where a PW will be forced on:
+	 * - a KVMR request on any power well via the KVMR request register
+	 * - a DMC request on PW1 and MISC_IO power wells via the BIOS and
+	 *   DEBUG request registers
+	 * Skip the wait in case any of the request bits are set and print a
+	 * diagnostic message.
+	 */
+	wait_for((disabled = !(intel_de_read(dev_priv, regs->driver) &
+			       HSW_PWR_WELL_CTL_STATE(pw_idx))) ||
+		 (reqs = hsw_power_well_requesters(dev_priv, regs, pw_idx)), 1);
+	if (disabled)
+		return;
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "%s forced on (bios:%d driver:%d kvmr:%d debug:%d)\n",
+		    intel_power_well_name(power_well),
+		    !!(reqs & 1), !!(reqs & 2), !!(reqs & 4), !!(reqs & 8));
+}
+
+static void gen9_wait_for_power_well_fuses(struct drm_i915_private *dev_priv,
+					   enum skl_power_gate pg)
+{
+	/* Timeout 5us for PG#0, for other PGs 1us */
+	drm_WARN_ON(&dev_priv->drm,
+		    intel_de_wait_for_set(dev_priv, SKL_FUSE_STATUS,
+					  SKL_FUSE_PG_DIST_STATUS(pg), 1));
+}
+
+static void hsw_power_well_enable(struct drm_i915_private *dev_priv,
+				  struct i915_power_well *power_well)
+{
+	const struct i915_power_well_regs *regs = power_well->desc->ops->regs;
+	int pw_idx = i915_power_well_instance(power_well)->hsw.idx;
+	u32 val;
+
+	if (power_well->desc->has_fuses) {
+		enum skl_power_gate pg;
+
+		pg = DISPLAY_VER(dev_priv) >= 11 ? ICL_PW_CTL_IDX_TO_PG(pw_idx) :
+						 SKL_PW_CTL_IDX_TO_PG(pw_idx);
+
+		/* Wa_16013190616:adlp */
+		if (IS_ALDERLAKE_P(dev_priv) && pg == SKL_PG1)
+			intel_de_rmw(dev_priv, GEN8_CHICKEN_DCPR_1, 0, DISABLE_FLR_SRC);
+
+		/*
+		 * For PW1 we have to wait both for the PW0/PG0 fuse state
+		 * before enabling the power well and PW1/PG1's own fuse
+		 * state after the enabling. For all other power wells with
+		 * fuses we only have to wait for that PW/PG's fuse state
+		 * after the enabling.
+		 */
+		if (pg == SKL_PG1)
+			gen9_wait_for_power_well_fuses(dev_priv, SKL_PG0);
+	}
+
+	val = intel_de_read(dev_priv, regs->driver);
+	intel_de_write(dev_priv, regs->driver,
+		       val | HSW_PWR_WELL_CTL_REQ(pw_idx));
+
+	hsw_wait_for_power_well_enable(dev_priv, power_well, false);
+
+	if (power_well->desc->has_fuses) {
+		enum skl_power_gate pg;
+
+		pg = DISPLAY_VER(dev_priv) >= 11 ? ICL_PW_CTL_IDX_TO_PG(pw_idx) :
+						 SKL_PW_CTL_IDX_TO_PG(pw_idx);
+		gen9_wait_for_power_well_fuses(dev_priv, pg);
+	}
+
+	hsw_power_well_post_enable(dev_priv,
+				   power_well->desc->irq_pipe_mask,
+				   power_well->desc->has_vga);
+}
+
+static void hsw_power_well_disable(struct drm_i915_private *dev_priv,
+				   struct i915_power_well *power_well)
+{
+	const struct i915_power_well_regs *regs = power_well->desc->ops->regs;
+	int pw_idx = i915_power_well_instance(power_well)->hsw.idx;
+	u32 val;
+
+	hsw_power_well_pre_disable(dev_priv,
+				   power_well->desc->irq_pipe_mask);
+
+	val = intel_de_read(dev_priv, regs->driver);
+	intel_de_write(dev_priv, regs->driver,
+		       val & ~HSW_PWR_WELL_CTL_REQ(pw_idx));
+	hsw_wait_for_power_well_disable(dev_priv, power_well);
+}
+
+static void
+icl_combo_phy_aux_power_well_enable(struct drm_i915_private *dev_priv,
+				    struct i915_power_well *power_well)
+{
+	const struct i915_power_well_regs *regs = power_well->desc->ops->regs;
+	int pw_idx = i915_power_well_instance(power_well)->hsw.idx;
+	enum phy phy = icl_aux_pw_to_phy(dev_priv, power_well);
+	u32 val;
+
+	drm_WARN_ON(&dev_priv->drm, !IS_ICELAKE(dev_priv));
+
+	val = intel_de_read(dev_priv, regs->driver);
+	intel_de_write(dev_priv, regs->driver,
+		       val | HSW_PWR_WELL_CTL_REQ(pw_idx));
+
+	if (DISPLAY_VER(dev_priv) < 12) {
+		val = intel_de_read(dev_priv, ICL_PORT_CL_DW12(phy));
+		intel_de_write(dev_priv, ICL_PORT_CL_DW12(phy),
+			       val | ICL_LANE_ENABLE_AUX);
+	}
+
+	hsw_wait_for_power_well_enable(dev_priv, power_well, false);
+
+	/* Display WA #1178: icl */
+	if (pw_idx >= ICL_PW_CTL_IDX_AUX_A && pw_idx <= ICL_PW_CTL_IDX_AUX_B &&
+	    !intel_bios_is_port_edp(dev_priv, (enum port)phy)) {
+		val = intel_de_read(dev_priv, ICL_AUX_ANAOVRD1(pw_idx));
+		val |= ICL_AUX_ANAOVRD1_ENABLE | ICL_AUX_ANAOVRD1_LDO_BYPASS;
+		intel_de_write(dev_priv, ICL_AUX_ANAOVRD1(pw_idx), val);
+	}
+}
+
+static void
+icl_combo_phy_aux_power_well_disable(struct drm_i915_private *dev_priv,
+				     struct i915_power_well *power_well)
+{
+	const struct i915_power_well_regs *regs = power_well->desc->ops->regs;
+	int pw_idx = i915_power_well_instance(power_well)->hsw.idx;
+	enum phy phy = icl_aux_pw_to_phy(dev_priv, power_well);
+	u32 val;
+
+	drm_WARN_ON(&dev_priv->drm, !IS_ICELAKE(dev_priv));
+
+	val = intel_de_read(dev_priv, ICL_PORT_CL_DW12(phy));
+	intel_de_write(dev_priv, ICL_PORT_CL_DW12(phy),
+		       val & ~ICL_LANE_ENABLE_AUX);
+
+	val = intel_de_read(dev_priv, regs->driver);
+	intel_de_write(dev_priv, regs->driver,
+		       val & ~HSW_PWR_WELL_CTL_REQ(pw_idx));
+
+	hsw_wait_for_power_well_disable(dev_priv, power_well);
+}
+
+#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
+
+static void icl_tc_port_assert_ref_held(struct drm_i915_private *dev_priv,
+					struct i915_power_well *power_well,
+					struct intel_digital_port *dig_port)
+{
+	if (drm_WARN_ON(&dev_priv->drm, !dig_port))
+		return;
+
+	if (DISPLAY_VER(dev_priv) == 11 && intel_tc_cold_requires_aux_pw(dig_port))
+		return;
+
+	drm_WARN_ON(&dev_priv->drm, !intel_tc_port_ref_held(dig_port));
+}
+
+#else
+
+static void icl_tc_port_assert_ref_held(struct drm_i915_private *dev_priv,
+					struct i915_power_well *power_well,
+					struct intel_digital_port *dig_port)
+{
+}
+
+#endif
+
+#define TGL_AUX_PW_TO_TC_PORT(pw_idx)	((pw_idx) - TGL_PW_CTL_IDX_AUX_TC1)
+
+static void icl_tc_cold_exit(struct drm_i915_private *i915)
+{
+	int ret, tries = 0;
+
+	while (1) {
+		ret = snb_pcode_write_timeout(&i915->uncore, ICL_PCODE_EXIT_TCCOLD, 0,
+					      250, 1);
+		if (ret != -EAGAIN || ++tries == 3)
+			break;
+		msleep(1);
+	}
+
+	/* Spec states that TC cold exit can take up to 1ms to complete */
+	if (!ret)
+		msleep(1);
+
+	/* TODO: turn failure into a error as soon i915 CI updates ICL IFWI */
+	drm_dbg_kms(&i915->drm, "TC cold block %s\n", ret ? "failed" :
+		    "succeeded");
+}
+
+static void
+icl_tc_phy_aux_power_well_enable(struct drm_i915_private *dev_priv,
+				 struct i915_power_well *power_well)
+{
+	enum aux_ch aux_ch = icl_aux_pw_to_ch(power_well);
+	struct intel_digital_port *dig_port = aux_ch_to_digital_port(dev_priv, aux_ch);
+	const struct i915_power_well_regs *regs = power_well->desc->ops->regs;
+	bool is_tbt = power_well->desc->is_tc_tbt;
+	bool timeout_expected;
+	u32 val;
+
+	icl_tc_port_assert_ref_held(dev_priv, power_well, dig_port);
+
+	val = intel_de_read(dev_priv, DP_AUX_CH_CTL(aux_ch));
+	val &= ~DP_AUX_CH_CTL_TBT_IO;
+	if (is_tbt)
+		val |= DP_AUX_CH_CTL_TBT_IO;
+	intel_de_write(dev_priv, DP_AUX_CH_CTL(aux_ch), val);
+
+	val = intel_de_read(dev_priv, regs->driver);
+	intel_de_write(dev_priv, regs->driver,
+		       val | HSW_PWR_WELL_CTL_REQ(i915_power_well_instance(power_well)->hsw.idx));
+
+	/*
+	 * An AUX timeout is expected if the TBT DP tunnel is down,
+	 * or need to enable AUX on a legacy TypeC port as part of the TC-cold
+	 * exit sequence.
+	 */
+	timeout_expected = is_tbt || intel_tc_cold_requires_aux_pw(dig_port);
+	if (DISPLAY_VER(dev_priv) == 11 && intel_tc_cold_requires_aux_pw(dig_port))
+		icl_tc_cold_exit(dev_priv);
+
+	hsw_wait_for_power_well_enable(dev_priv, power_well, timeout_expected);
+
+	if (DISPLAY_VER(dev_priv) >= 12 && !is_tbt) {
+		enum tc_port tc_port;
+
+		tc_port = TGL_AUX_PW_TO_TC_PORT(i915_power_well_instance(power_well)->hsw.idx);
+
+		if (wait_for(intel_dkl_phy_read(dev_priv, DKL_CMN_UC_DW_27(tc_port), 2) &
+			     DKL_CMN_UC_DW27_UC_HEALTH, 1))
+			drm_warn(&dev_priv->drm,
+				 "Timeout waiting TC uC health\n");
+	}
+}
+
+static void
+icl_aux_power_well_enable(struct drm_i915_private *dev_priv,
+			  struct i915_power_well *power_well)
+{
+	enum phy phy = icl_aux_pw_to_phy(dev_priv, power_well);
+
+	if (intel_phy_is_tc(dev_priv, phy))
+		return icl_tc_phy_aux_power_well_enable(dev_priv, power_well);
+	else if (IS_ICELAKE(dev_priv))
+		return icl_combo_phy_aux_power_well_enable(dev_priv,
+							   power_well);
+	else
+		return hsw_power_well_enable(dev_priv, power_well);
+}
+
+static void
+icl_aux_power_well_disable(struct drm_i915_private *dev_priv,
+			   struct i915_power_well *power_well)
+{
+	enum phy phy = icl_aux_pw_to_phy(dev_priv, power_well);
+
+	if (intel_phy_is_tc(dev_priv, phy))
+		return hsw_power_well_disable(dev_priv, power_well);
+	else if (IS_ICELAKE(dev_priv))
+		return icl_combo_phy_aux_power_well_disable(dev_priv,
+							    power_well);
+	else
+		return hsw_power_well_disable(dev_priv, power_well);
+}
+
+/*
+ * We should only use the power well if we explicitly asked the hardware to
+ * enable it, so check if it's enabled and also check if we've requested it to
+ * be enabled.
+ */
+static bool hsw_power_well_enabled(struct drm_i915_private *dev_priv,
+				   struct i915_power_well *power_well)
+{
+	const struct i915_power_well_regs *regs = power_well->desc->ops->regs;
+	enum i915_power_well_id id = i915_power_well_instance(power_well)->id;
+	int pw_idx = i915_power_well_instance(power_well)->hsw.idx;
+	u32 mask = HSW_PWR_WELL_CTL_REQ(pw_idx) |
+		   HSW_PWR_WELL_CTL_STATE(pw_idx);
+	u32 val;
+
+	val = intel_de_read(dev_priv, regs->driver);
+
+	/*
+	 * On GEN9 big core due to a DMC bug the driver's request bits for PW1
+	 * and the MISC_IO PW will be not restored, so check instead for the
+	 * BIOS's own request bits, which are forced-on for these power wells
+	 * when exiting DC5/6.
+	 */
+	if (DISPLAY_VER(dev_priv) == 9 && !IS_BROXTON(dev_priv) &&
+	    (id == SKL_DISP_PW_1 || id == SKL_DISP_PW_MISC_IO))
+		val |= intel_de_read(dev_priv, regs->bios);
+
+	return (val & mask) == mask;
+}
+
+static void assert_can_enable_dc9(struct drm_i915_private *dev_priv)
+{
+	drm_WARN_ONCE(&dev_priv->drm,
+		      (intel_de_read(dev_priv, DC_STATE_EN) & DC_STATE_EN_DC9),
+		      "DC9 already programmed to be enabled.\n");
+	drm_WARN_ONCE(&dev_priv->drm,
+		      intel_de_read(dev_priv, DC_STATE_EN) &
+		      DC_STATE_EN_UPTO_DC5,
+		      "DC5 still not disabled to enable DC9.\n");
+	drm_WARN_ONCE(&dev_priv->drm,
+		      intel_de_read(dev_priv, HSW_PWR_WELL_CTL2) &
+		      HSW_PWR_WELL_CTL_REQ(SKL_PW_CTL_IDX_PW_2),
+		      "Power well 2 on.\n");
+	drm_WARN_ONCE(&dev_priv->drm, intel_irqs_enabled(dev_priv),
+		      "Interrupts not disabled yet.\n");
+
+	 /*
+	  * TODO: check for the following to verify the conditions to enter DC9
+	  * state are satisfied:
+	  * 1] Check relevant display engine registers to verify if mode set
+	  * disable sequence was followed.
+	  * 2] Check if display uninitialize sequence is initialized.
+	  */
+}
+
+static void assert_can_disable_dc9(struct drm_i915_private *dev_priv)
+{
+	drm_WARN_ONCE(&dev_priv->drm, intel_irqs_enabled(dev_priv),
+		      "Interrupts not disabled yet.\n");
+	drm_WARN_ONCE(&dev_priv->drm,
+		      intel_de_read(dev_priv, DC_STATE_EN) &
+		      DC_STATE_EN_UPTO_DC5,
+		      "DC5 still not disabled.\n");
+
+	 /*
+	  * TODO: check for the following to verify DC9 state was indeed
+	  * entered before programming to disable it:
+	  * 1] Check relevant display engine registers to verify if mode
+	  *  set disable sequence was followed.
+	  * 2] Check if display uninitialize sequence is initialized.
+	  */
+}
+
+static void gen9_write_dc_state(struct drm_i915_private *dev_priv,
+				u32 state)
+{
+	int rewrites = 0;
+	int rereads = 0;
+	u32 v;
+
+	intel_de_write(dev_priv, DC_STATE_EN, state);
+
+	/* It has been observed that disabling the dc6 state sometimes
+	 * doesn't stick and dmc keeps returning old value. Make sure
+	 * the write really sticks enough times and also force rewrite until
+	 * we are confident that state is exactly what we want.
+	 */
+	do  {
+		v = intel_de_read(dev_priv, DC_STATE_EN);
+
+		if (v != state) {
+			intel_de_write(dev_priv, DC_STATE_EN, state);
+			rewrites++;
+			rereads = 0;
+		} else if (rereads++ > 5) {
+			break;
+		}
+
+	} while (rewrites < 100);
+
+	if (v != state)
+		drm_err(&dev_priv->drm,
+			"Writing dc state to 0x%x failed, now 0x%x\n",
+			state, v);
+
+	/* Most of the times we need one retry, avoid spam */
+	if (rewrites > 1)
+		drm_dbg_kms(&dev_priv->drm,
+			    "Rewrote dc state to 0x%x %d times\n",
+			    state, rewrites);
+}
+
+static u32 gen9_dc_mask(struct drm_i915_private *dev_priv)
+{
+	u32 mask;
+
+	mask = DC_STATE_EN_UPTO_DC5;
+
+	if (DISPLAY_VER(dev_priv) >= 12)
+		mask |= DC_STATE_EN_DC3CO | DC_STATE_EN_UPTO_DC6
+					  | DC_STATE_EN_DC9;
+	else if (DISPLAY_VER(dev_priv) == 11)
+		mask |= DC_STATE_EN_UPTO_DC6 | DC_STATE_EN_DC9;
+	else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
+		mask |= DC_STATE_EN_DC9;
+	else
+		mask |= DC_STATE_EN_UPTO_DC6;
+
+	return mask;
+}
+
+void gen9_sanitize_dc_state(struct drm_i915_private *dev_priv)
+{
+	u32 val;
+
+	if (!HAS_DISPLAY(dev_priv))
+		return;
+
+	val = intel_de_read(dev_priv, DC_STATE_EN) & gen9_dc_mask(dev_priv);
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "Resetting DC state tracking from %02x to %02x\n",
+		    dev_priv->display.dmc.dc_state, val);
+	dev_priv->display.dmc.dc_state = val;
+}
+
+/**
+ * gen9_set_dc_state - set target display C power state
+ * @dev_priv: i915 device instance
+ * @state: target DC power state
+ * - DC_STATE_DISABLE
+ * - DC_STATE_EN_UPTO_DC5
+ * - DC_STATE_EN_UPTO_DC6
+ * - DC_STATE_EN_DC9
+ *
+ * Signal to DMC firmware/HW the target DC power state passed in @state.
+ * DMC/HW can turn off individual display clocks and power rails when entering
+ * a deeper DC power state (higher in number) and turns these back when exiting
+ * that state to a shallower power state (lower in number). The HW will decide
+ * when to actually enter a given state on an on-demand basis, for instance
+ * depending on the active state of display pipes. The state of display
+ * registers backed by affected power rails are saved/restored as needed.
+ *
+ * Based on the above enabling a deeper DC power state is asynchronous wrt.
+ * enabling it. Disabling a deeper power state is synchronous: for instance
+ * setting %DC_STATE_DISABLE won't complete until all HW resources are turned
+ * back on and register state is restored. This is guaranteed by the MMIO write
+ * to DC_STATE_EN blocking until the state is restored.
+ */
+void gen9_set_dc_state(struct drm_i915_private *dev_priv, u32 state)
+{
+	u32 val;
+	u32 mask;
+
+	if (!HAS_DISPLAY(dev_priv))
+		return;
+
+	if (drm_WARN_ON_ONCE(&dev_priv->drm,
+			     state & ~dev_priv->display.dmc.allowed_dc_mask))
+		state &= dev_priv->display.dmc.allowed_dc_mask;
+
+	val = intel_de_read(dev_priv, DC_STATE_EN);
+	mask = gen9_dc_mask(dev_priv);
+	drm_dbg_kms(&dev_priv->drm, "Setting DC state from %02x to %02x\n",
+		    val & mask, state);
+
+	/* Check if DMC is ignoring our DC state requests */
+	if ((val & mask) != dev_priv->display.dmc.dc_state)
+		drm_err(&dev_priv->drm, "DC state mismatch (0x%x -> 0x%x)\n",
+			dev_priv->display.dmc.dc_state, val & mask);
+
+	val &= ~mask;
+	val |= state;
+
+	gen9_write_dc_state(dev_priv, val);
+
+	dev_priv->display.dmc.dc_state = val & mask;
+}
+
+static void tgl_enable_dc3co(struct drm_i915_private *dev_priv)
+{
+	drm_dbg_kms(&dev_priv->drm, "Enabling DC3CO\n");
+	gen9_set_dc_state(dev_priv, DC_STATE_EN_DC3CO);
+}
+
+static void tgl_disable_dc3co(struct drm_i915_private *dev_priv)
+{
+	u32 val;
+
+	drm_dbg_kms(&dev_priv->drm, "Disabling DC3CO\n");
+	val = intel_de_read(dev_priv, DC_STATE_EN);
+	val &= ~DC_STATE_DC3CO_STATUS;
+	intel_de_write(dev_priv, DC_STATE_EN, val);
+	gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
+	/*
+	 * Delay of 200us DC3CO Exit time B.Spec 49196
+	 */
+	usleep_range(200, 210);
+}
+
+static void assert_can_enable_dc5(struct drm_i915_private *dev_priv)
+{
+	enum i915_power_well_id high_pg;
+
+	/* Power wells at this level and above must be disabled for DC5 entry */
+	if (DISPLAY_VER(dev_priv) == 12)
+		high_pg = ICL_DISP_PW_3;
+	else
+		high_pg = SKL_DISP_PW_2;
+
+	drm_WARN_ONCE(&dev_priv->drm,
+		      intel_display_power_well_is_enabled(dev_priv, high_pg),
+		      "Power wells above platform's DC5 limit still enabled.\n");
+
+	drm_WARN_ONCE(&dev_priv->drm,
+		      (intel_de_read(dev_priv, DC_STATE_EN) &
+		       DC_STATE_EN_UPTO_DC5),
+		      "DC5 already programmed to be enabled.\n");
+	assert_rpm_wakelock_held(&dev_priv->runtime_pm);
+
+	assert_dmc_loaded(dev_priv);
+}
+
+void gen9_enable_dc5(struct drm_i915_private *dev_priv)
+{
+	assert_can_enable_dc5(dev_priv);
+
+	drm_dbg_kms(&dev_priv->drm, "Enabling DC5\n");
+
+	/* Wa Display #1183: skl,kbl,cfl */
+	if (DISPLAY_VER(dev_priv) == 9 && !IS_BROXTON(dev_priv))
+		intel_de_write(dev_priv, GEN8_CHICKEN_DCPR_1,
+			       intel_de_read(dev_priv, GEN8_CHICKEN_DCPR_1) | SKL_SELECT_ALTERNATE_DC_EXIT);
+
+	gen9_set_dc_state(dev_priv, DC_STATE_EN_UPTO_DC5);
+}
+
+static void assert_can_enable_dc6(struct drm_i915_private *dev_priv)
+{
+	drm_WARN_ONCE(&dev_priv->drm,
+		      intel_de_read(dev_priv, UTIL_PIN_CTL) & UTIL_PIN_ENABLE,
+		      "Backlight is not disabled.\n");
+	drm_WARN_ONCE(&dev_priv->drm,
+		      (intel_de_read(dev_priv, DC_STATE_EN) &
+		       DC_STATE_EN_UPTO_DC6),
+		      "DC6 already programmed to be enabled.\n");
+
+	assert_dmc_loaded(dev_priv);
+}
+
+void skl_enable_dc6(struct drm_i915_private *dev_priv)
+{
+	assert_can_enable_dc6(dev_priv);
+
+	drm_dbg_kms(&dev_priv->drm, "Enabling DC6\n");
+
+	/* Wa Display #1183: skl,kbl,cfl */
+	if (DISPLAY_VER(dev_priv) == 9 && !IS_BROXTON(dev_priv))
+		intel_de_write(dev_priv, GEN8_CHICKEN_DCPR_1,
+			       intel_de_read(dev_priv, GEN8_CHICKEN_DCPR_1) | SKL_SELECT_ALTERNATE_DC_EXIT);
+
+	gen9_set_dc_state(dev_priv, DC_STATE_EN_UPTO_DC6);
+}
+
+void bxt_enable_dc9(struct drm_i915_private *dev_priv)
+{
+	assert_can_enable_dc9(dev_priv);
+
+	drm_dbg_kms(&dev_priv->drm, "Enabling DC9\n");
+	/*
+	 * Power sequencer reset is not needed on
+	 * platforms with South Display Engine on PCH,
+	 * because PPS registers are always on.
+	 */
+	if (!HAS_PCH_SPLIT(dev_priv))
+		intel_pps_reset_all(dev_priv);
+	gen9_set_dc_state(dev_priv, DC_STATE_EN_DC9);
+}
+
+void bxt_disable_dc9(struct drm_i915_private *dev_priv)
+{
+	assert_can_disable_dc9(dev_priv);
+
+	drm_dbg_kms(&dev_priv->drm, "Disabling DC9\n");
+
+	gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
+
+	intel_pps_unlock_regs_wa(dev_priv);
+}
+
+static void hsw_power_well_sync_hw(struct drm_i915_private *dev_priv,
+				   struct i915_power_well *power_well)
+{
+	const struct i915_power_well_regs *regs = power_well->desc->ops->regs;
+	int pw_idx = i915_power_well_instance(power_well)->hsw.idx;
+	u32 mask = HSW_PWR_WELL_CTL_REQ(pw_idx);
+	u32 bios_req = intel_de_read(dev_priv, regs->bios);
+
+	/* Take over the request bit if set by BIOS. */
+	if (bios_req & mask) {
+		u32 drv_req = intel_de_read(dev_priv, regs->driver);
+
+		if (!(drv_req & mask))
+			intel_de_write(dev_priv, regs->driver, drv_req | mask);
+		intel_de_write(dev_priv, regs->bios, bios_req & ~mask);
+	}
+}
+
+static void bxt_dpio_cmn_power_well_enable(struct drm_i915_private *dev_priv,
+					   struct i915_power_well *power_well)
+{
+	bxt_ddi_phy_init(dev_priv, i915_power_well_instance(power_well)->bxt.phy);
+}
+
+static void bxt_dpio_cmn_power_well_disable(struct drm_i915_private *dev_priv,
+					    struct i915_power_well *power_well)
+{
+	bxt_ddi_phy_uninit(dev_priv, i915_power_well_instance(power_well)->bxt.phy);
+}
+
+static bool bxt_dpio_cmn_power_well_enabled(struct drm_i915_private *dev_priv,
+					    struct i915_power_well *power_well)
+{
+	return bxt_ddi_phy_is_enabled(dev_priv, i915_power_well_instance(power_well)->bxt.phy);
+}
+
+static void bxt_verify_ddi_phy_power_wells(struct drm_i915_private *dev_priv)
+{
+	struct i915_power_well *power_well;
+
+	power_well = lookup_power_well(dev_priv, BXT_DISP_PW_DPIO_CMN_A);
+	if (intel_power_well_refcount(power_well) > 0)
+		bxt_ddi_phy_verify_state(dev_priv, i915_power_well_instance(power_well)->bxt.phy);
+
+	power_well = lookup_power_well(dev_priv, VLV_DISP_PW_DPIO_CMN_BC);
+	if (intel_power_well_refcount(power_well) > 0)
+		bxt_ddi_phy_verify_state(dev_priv, i915_power_well_instance(power_well)->bxt.phy);
+
+	if (IS_GEMINILAKE(dev_priv)) {
+		power_well = lookup_power_well(dev_priv,
+					       GLK_DISP_PW_DPIO_CMN_C);
+		if (intel_power_well_refcount(power_well) > 0)
+			bxt_ddi_phy_verify_state(dev_priv,
+						 i915_power_well_instance(power_well)->bxt.phy);
+	}
+}
+
+static bool gen9_dc_off_power_well_enabled(struct drm_i915_private *dev_priv,
+					   struct i915_power_well *power_well)
+{
+	return ((intel_de_read(dev_priv, DC_STATE_EN) & DC_STATE_EN_DC3CO) == 0 &&
+		(intel_de_read(dev_priv, DC_STATE_EN) & DC_STATE_EN_UPTO_DC5_DC6_MASK) == 0);
+}
+
+static void gen9_assert_dbuf_enabled(struct drm_i915_private *dev_priv)
+{
+	u8 hw_enabled_dbuf_slices = intel_enabled_dbuf_slices_mask(dev_priv);
+	u8 enabled_dbuf_slices = dev_priv->display.dbuf.enabled_slices;
+
+	drm_WARN(&dev_priv->drm,
+		 hw_enabled_dbuf_slices != enabled_dbuf_slices,
+		 "Unexpected DBuf power power state (0x%08x, expected 0x%08x)\n",
+		 hw_enabled_dbuf_slices,
+		 enabled_dbuf_slices);
+}
+
+void gen9_disable_dc_states(struct drm_i915_private *dev_priv)
+{
+	struct intel_cdclk_config cdclk_config = {};
+
+	if (dev_priv->display.dmc.target_dc_state == DC_STATE_EN_DC3CO) {
+		tgl_disable_dc3co(dev_priv);
+		return;
+	}
+
+	gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
+
+	if (!HAS_DISPLAY(dev_priv))
+		return;
+
+	intel_cdclk_get_cdclk(dev_priv, &cdclk_config);
+	/* Can't read out voltage_level so can't use intel_cdclk_changed() */
+	drm_WARN_ON(&dev_priv->drm,
+		    intel_cdclk_needs_modeset(&dev_priv->display.cdclk.hw,
+					      &cdclk_config));
+
+	gen9_assert_dbuf_enabled(dev_priv);
+
+	if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
+		bxt_verify_ddi_phy_power_wells(dev_priv);
+
+	if (DISPLAY_VER(dev_priv) >= 11)
+		/*
+		 * DMC retains HW context only for port A, the other combo
+		 * PHY's HW context for port B is lost after DC transitions,
+		 * so we need to restore it manually.
+		 */
+		intel_combo_phy_init(dev_priv);
+}
+
+static void gen9_dc_off_power_well_enable(struct drm_i915_private *dev_priv,
+					  struct i915_power_well *power_well)
+{
+	gen9_disable_dc_states(dev_priv);
+}
+
+static void gen9_dc_off_power_well_disable(struct drm_i915_private *dev_priv,
+					   struct i915_power_well *power_well)
+{
+	if (!intel_dmc_has_payload(dev_priv))
+		return;
+
+	switch (dev_priv->display.dmc.target_dc_state) {
+	case DC_STATE_EN_DC3CO:
+		tgl_enable_dc3co(dev_priv);
+		break;
+	case DC_STATE_EN_UPTO_DC6:
+		skl_enable_dc6(dev_priv);
+		break;
+	case DC_STATE_EN_UPTO_DC5:
+		gen9_enable_dc5(dev_priv);
+		break;
+	}
+}
+
+static void i9xx_power_well_sync_hw_noop(struct drm_i915_private *dev_priv,
+					 struct i915_power_well *power_well)
+{
+}
+
+static void i9xx_always_on_power_well_noop(struct drm_i915_private *dev_priv,
+					   struct i915_power_well *power_well)
+{
+}
+
+static bool i9xx_always_on_power_well_enabled(struct drm_i915_private *dev_priv,
+					     struct i915_power_well *power_well)
+{
+	return true;
+}
+
+static void i830_pipes_power_well_enable(struct drm_i915_private *dev_priv,
+					 struct i915_power_well *power_well)
+{
+	if ((intel_de_read(dev_priv, PIPECONF(PIPE_A)) & PIPECONF_ENABLE) == 0)
+		i830_enable_pipe(dev_priv, PIPE_A);
+	if ((intel_de_read(dev_priv, PIPECONF(PIPE_B)) & PIPECONF_ENABLE) == 0)
+		i830_enable_pipe(dev_priv, PIPE_B);
+}
+
+static void i830_pipes_power_well_disable(struct drm_i915_private *dev_priv,
+					  struct i915_power_well *power_well)
+{
+	i830_disable_pipe(dev_priv, PIPE_B);
+	i830_disable_pipe(dev_priv, PIPE_A);
+}
+
+static bool i830_pipes_power_well_enabled(struct drm_i915_private *dev_priv,
+					  struct i915_power_well *power_well)
+{
+	return intel_de_read(dev_priv, PIPECONF(PIPE_A)) & PIPECONF_ENABLE &&
+		intel_de_read(dev_priv, PIPECONF(PIPE_B)) & PIPECONF_ENABLE;
+}
+
+static void i830_pipes_power_well_sync_hw(struct drm_i915_private *dev_priv,
+					  struct i915_power_well *power_well)
+{
+	if (intel_power_well_refcount(power_well) > 0)
+		i830_pipes_power_well_enable(dev_priv, power_well);
+	else
+		i830_pipes_power_well_disable(dev_priv, power_well);
+}
+
+static void vlv_set_power_well(struct drm_i915_private *dev_priv,
+			       struct i915_power_well *power_well, bool enable)
+{
+	int pw_idx = i915_power_well_instance(power_well)->vlv.idx;
+	u32 mask;
+	u32 state;
+	u32 ctrl;
+
+	mask = PUNIT_PWRGT_MASK(pw_idx);
+	state = enable ? PUNIT_PWRGT_PWR_ON(pw_idx) :
+			 PUNIT_PWRGT_PWR_GATE(pw_idx);
+
+	vlv_punit_get(dev_priv);
+
+#define COND \
+	((vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_STATUS) & mask) == state)
+
+	if (COND)
+		goto out;
+
+	ctrl = vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_CTRL);
+	ctrl &= ~mask;
+	ctrl |= state;
+	vlv_punit_write(dev_priv, PUNIT_REG_PWRGT_CTRL, ctrl);
+
+	if (wait_for(COND, 100))
+		drm_err(&dev_priv->drm,
+			"timeout setting power well state %08x (%08x)\n",
+			state,
+			vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_CTRL));
+
+#undef COND
+
+out:
+	vlv_punit_put(dev_priv);
+}
+
+static void vlv_power_well_enable(struct drm_i915_private *dev_priv,
+				  struct i915_power_well *power_well)
+{
+	vlv_set_power_well(dev_priv, power_well, true);
+}
+
+static void vlv_power_well_disable(struct drm_i915_private *dev_priv,
+				   struct i915_power_well *power_well)
+{
+	vlv_set_power_well(dev_priv, power_well, false);
+}
+
+static bool vlv_power_well_enabled(struct drm_i915_private *dev_priv,
+				   struct i915_power_well *power_well)
+{
+	int pw_idx = i915_power_well_instance(power_well)->vlv.idx;
+	bool enabled = false;
+	u32 mask;
+	u32 state;
+	u32 ctrl;
+
+	mask = PUNIT_PWRGT_MASK(pw_idx);
+	ctrl = PUNIT_PWRGT_PWR_ON(pw_idx);
+
+	vlv_punit_get(dev_priv);
+
+	state = vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_STATUS) & mask;
+	/*
+	 * We only ever set the power-on and power-gate states, anything
+	 * else is unexpected.
+	 */
+	drm_WARN_ON(&dev_priv->drm, state != PUNIT_PWRGT_PWR_ON(pw_idx) &&
+		    state != PUNIT_PWRGT_PWR_GATE(pw_idx));
+	if (state == ctrl)
+		enabled = true;
+
+	/*
+	 * A transient state at this point would mean some unexpected party
+	 * is poking at the power controls too.
+	 */
+	ctrl = vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_CTRL) & mask;
+	drm_WARN_ON(&dev_priv->drm, ctrl != state);
+
+	vlv_punit_put(dev_priv);
+
+	return enabled;
+}
+
+static void vlv_init_display_clock_gating(struct drm_i915_private *dev_priv)
+{
+	u32 val;
+
+	/*
+	 * On driver load, a pipe may be active and driving a DSI display.
+	 * Preserve DPOUNIT_CLOCK_GATE_DISABLE to avoid the pipe getting stuck
+	 * (and never recovering) in this case. intel_dsi_post_disable() will
+	 * clear it when we turn off the display.
+	 */
+	val = intel_de_read(dev_priv, DSPCLK_GATE_D(dev_priv));
+	val &= DPOUNIT_CLOCK_GATE_DISABLE;
+	val |= VRHUNIT_CLOCK_GATE_DISABLE;
+	intel_de_write(dev_priv, DSPCLK_GATE_D(dev_priv), val);
+
+	/*
+	 * Disable trickle feed and enable pnd deadline calculation
+	 */
+	intel_de_write(dev_priv, MI_ARB_VLV,
+		       MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE);
+	intel_de_write(dev_priv, CBR1_VLV, 0);
+
+	drm_WARN_ON(&dev_priv->drm, RUNTIME_INFO(dev_priv)->rawclk_freq == 0);
+	intel_de_write(dev_priv, RAWCLK_FREQ_VLV,
+		       DIV_ROUND_CLOSEST(RUNTIME_INFO(dev_priv)->rawclk_freq,
+					 1000));
+}
+
+static void vlv_display_power_well_init(struct drm_i915_private *dev_priv)
+{
+	struct intel_encoder *encoder;
+	enum pipe pipe;
+
+	/*
+	 * Enable the CRI clock source so we can get at the
+	 * display and the reference clock for VGA
+	 * hotplug / manual detection. Supposedly DSI also
+	 * needs the ref clock up and running.
+	 *
+	 * CHV DPLL B/C have some issues if VGA mode is enabled.
+	 */
+	for_each_pipe(dev_priv, pipe) {
+		u32 val = intel_de_read(dev_priv, DPLL(pipe));
+
+		val |= DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
+		if (pipe != PIPE_A)
+			val |= DPLL_INTEGRATED_CRI_CLK_VLV;
+
+		intel_de_write(dev_priv, DPLL(pipe), val);
+	}
+
+	vlv_init_display_clock_gating(dev_priv);
+
+	spin_lock_irq(&dev_priv->irq_lock);
+	valleyview_enable_display_irqs(dev_priv);
+	spin_unlock_irq(&dev_priv->irq_lock);
+
+	/*
+	 * During driver initialization/resume we can avoid restoring the
+	 * part of the HW/SW state that will be inited anyway explicitly.
+	 */
+	if (dev_priv->display.power.domains.initializing)
+		return;
+
+	intel_hpd_init(dev_priv);
+	intel_hpd_poll_disable(dev_priv);
+
+	/* Re-enable the ADPA, if we have one */
+	for_each_intel_encoder(&dev_priv->drm, encoder) {
+		if (encoder->type == INTEL_OUTPUT_ANALOG)
+			intel_crt_reset(&encoder->base);
+	}
+
+	intel_vga_redisable_power_on(dev_priv);
+
+	intel_pps_unlock_regs_wa(dev_priv);
+}
+
+static void vlv_display_power_well_deinit(struct drm_i915_private *dev_priv)
+{
+	spin_lock_irq(&dev_priv->irq_lock);
+	valleyview_disable_display_irqs(dev_priv);
+	spin_unlock_irq(&dev_priv->irq_lock);
+
+	/* make sure we're done processing display irqs */
+	intel_synchronize_irq(dev_priv);
+
+	intel_pps_reset_all(dev_priv);
+
+	/* Prevent us from re-enabling polling on accident in late suspend */
+	if (!dev_priv->drm.dev->power.is_suspended)
+		intel_hpd_poll_enable(dev_priv);
+}
+
+static void vlv_display_power_well_enable(struct drm_i915_private *dev_priv,
+					  struct i915_power_well *power_well)
+{
+	vlv_set_power_well(dev_priv, power_well, true);
+
+	vlv_display_power_well_init(dev_priv);
+}
+
+static void vlv_display_power_well_disable(struct drm_i915_private *dev_priv,
+					   struct i915_power_well *power_well)
+{
+	vlv_display_power_well_deinit(dev_priv);
+
+	vlv_set_power_well(dev_priv, power_well, false);
+}
+
+static void vlv_dpio_cmn_power_well_enable(struct drm_i915_private *dev_priv,
+					   struct i915_power_well *power_well)
+{
+	/* since ref/cri clock was enabled */
+	udelay(1); /* >10ns for cmnreset, >0ns for sidereset */
+
+	vlv_set_power_well(dev_priv, power_well, true);
+
+	/*
+	 * From VLV2A0_DP_eDP_DPIO_driver_vbios_notes_10.docx -
+	 *  6.	De-assert cmn_reset/side_reset. Same as VLV X0.
+	 *   a.	GUnit 0x2110 bit[0] set to 1 (def 0)
+	 *   b.	The other bits such as sfr settings / modesel may all
+	 *	be set to 0.
+	 *
+	 * This should only be done on init and resume from S3 with
+	 * both PLLs disabled, or we risk losing DPIO and PLL
+	 * synchronization.
+	 */
+	intel_de_write(dev_priv, DPIO_CTL,
+		       intel_de_read(dev_priv, DPIO_CTL) | DPIO_CMNRST);
+}
+
+static void vlv_dpio_cmn_power_well_disable(struct drm_i915_private *dev_priv,
+					    struct i915_power_well *power_well)
+{
+	enum pipe pipe;
+
+	for_each_pipe(dev_priv, pipe)
+		assert_pll_disabled(dev_priv, pipe);
+
+	/* Assert common reset */
+	intel_de_write(dev_priv, DPIO_CTL,
+		       intel_de_read(dev_priv, DPIO_CTL) & ~DPIO_CMNRST);
+
+	vlv_set_power_well(dev_priv, power_well, false);
+}
+
+#define BITS_SET(val, bits) (((val) & (bits)) == (bits))
+
+static void assert_chv_phy_status(struct drm_i915_private *dev_priv)
+{
+	struct i915_power_well *cmn_bc =
+		lookup_power_well(dev_priv, VLV_DISP_PW_DPIO_CMN_BC);
+	struct i915_power_well *cmn_d =
+		lookup_power_well(dev_priv, CHV_DISP_PW_DPIO_CMN_D);
+	u32 phy_control = dev_priv->display.power.chv_phy_control;
+	u32 phy_status = 0;
+	u32 phy_status_mask = 0xffffffff;
+
+	/*
+	 * The BIOS can leave the PHY is some weird state
+	 * where it doesn't fully power down some parts.
+	 * Disable the asserts until the PHY has been fully
+	 * reset (ie. the power well has been disabled at
+	 * least once).
+	 */
+	if (!dev_priv->display.power.chv_phy_assert[DPIO_PHY0])
+		phy_status_mask &= ~(PHY_STATUS_CMN_LDO(DPIO_PHY0, DPIO_CH0) |
+				     PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH0, 0) |
+				     PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH0, 1) |
+				     PHY_STATUS_CMN_LDO(DPIO_PHY0, DPIO_CH1) |
+				     PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH1, 0) |
+				     PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH1, 1));
+
+	if (!dev_priv->display.power.chv_phy_assert[DPIO_PHY1])
+		phy_status_mask &= ~(PHY_STATUS_CMN_LDO(DPIO_PHY1, DPIO_CH0) |
+				     PHY_STATUS_SPLINE_LDO(DPIO_PHY1, DPIO_CH0, 0) |
+				     PHY_STATUS_SPLINE_LDO(DPIO_PHY1, DPIO_CH0, 1));
+
+	if (intel_power_well_is_enabled(dev_priv, cmn_bc)) {
+		phy_status |= PHY_POWERGOOD(DPIO_PHY0);
+
+		/* this assumes override is only used to enable lanes */
+		if ((phy_control & PHY_CH_POWER_DOWN_OVRD_EN(DPIO_PHY0, DPIO_CH0)) == 0)
+			phy_control |= PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY0, DPIO_CH0);
+
+		if ((phy_control & PHY_CH_POWER_DOWN_OVRD_EN(DPIO_PHY0, DPIO_CH1)) == 0)
+			phy_control |= PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY0, DPIO_CH1);
+
+		/* CL1 is on whenever anything is on in either channel */
+		if (BITS_SET(phy_control,
+			     PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY0, DPIO_CH0) |
+			     PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY0, DPIO_CH1)))
+			phy_status |= PHY_STATUS_CMN_LDO(DPIO_PHY0, DPIO_CH0);
+
+		/*
+		 * The DPLLB check accounts for the pipe B + port A usage
+		 * with CL2 powered up but all the lanes in the second channel
+		 * powered down.
+		 */
+		if (BITS_SET(phy_control,
+			     PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY0, DPIO_CH1)) &&
+		    (intel_de_read(dev_priv, DPLL(PIPE_B)) & DPLL_VCO_ENABLE) == 0)
+			phy_status |= PHY_STATUS_CMN_LDO(DPIO_PHY0, DPIO_CH1);
+
+		if (BITS_SET(phy_control,
+			     PHY_CH_POWER_DOWN_OVRD(0x3, DPIO_PHY0, DPIO_CH0)))
+			phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH0, 0);
+		if (BITS_SET(phy_control,
+			     PHY_CH_POWER_DOWN_OVRD(0xc, DPIO_PHY0, DPIO_CH0)))
+			phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH0, 1);
+
+		if (BITS_SET(phy_control,
+			     PHY_CH_POWER_DOWN_OVRD(0x3, DPIO_PHY0, DPIO_CH1)))
+			phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH1, 0);
+		if (BITS_SET(phy_control,
+			     PHY_CH_POWER_DOWN_OVRD(0xc, DPIO_PHY0, DPIO_CH1)))
+			phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH1, 1);
+	}
+
+	if (intel_power_well_is_enabled(dev_priv, cmn_d)) {
+		phy_status |= PHY_POWERGOOD(DPIO_PHY1);
+
+		/* this assumes override is only used to enable lanes */
+		if ((phy_control & PHY_CH_POWER_DOWN_OVRD_EN(DPIO_PHY1, DPIO_CH0)) == 0)
+			phy_control |= PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY1, DPIO_CH0);
+
+		if (BITS_SET(phy_control,
+			     PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY1, DPIO_CH0)))
+			phy_status |= PHY_STATUS_CMN_LDO(DPIO_PHY1, DPIO_CH0);
+
+		if (BITS_SET(phy_control,
+			     PHY_CH_POWER_DOWN_OVRD(0x3, DPIO_PHY1, DPIO_CH0)))
+			phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY1, DPIO_CH0, 0);
+		if (BITS_SET(phy_control,
+			     PHY_CH_POWER_DOWN_OVRD(0xc, DPIO_PHY1, DPIO_CH0)))
+			phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY1, DPIO_CH0, 1);
+	}
+
+	phy_status &= phy_status_mask;
+
+	/*
+	 * The PHY may be busy with some initial calibration and whatnot,
+	 * so the power state can take a while to actually change.
+	 */
+	if (intel_de_wait_for_register(dev_priv, DISPLAY_PHY_STATUS,
+				       phy_status_mask, phy_status, 10))
+		drm_err(&dev_priv->drm,
+			"Unexpected PHY_STATUS 0x%08x, expected 0x%08x (PHY_CONTROL=0x%08x)\n",
+			intel_de_read(dev_priv, DISPLAY_PHY_STATUS) & phy_status_mask,
+			phy_status, dev_priv->display.power.chv_phy_control);
+}
+
+#undef BITS_SET
+
+static void chv_dpio_cmn_power_well_enable(struct drm_i915_private *dev_priv,
+					   struct i915_power_well *power_well)
+{
+	enum i915_power_well_id id = i915_power_well_instance(power_well)->id;
+	enum dpio_phy phy;
+	enum pipe pipe;
+	u32 tmp;
+
+	drm_WARN_ON_ONCE(&dev_priv->drm,
+			 id != VLV_DISP_PW_DPIO_CMN_BC &&
+			 id != CHV_DISP_PW_DPIO_CMN_D);
+
+	if (id == VLV_DISP_PW_DPIO_CMN_BC) {
+		pipe = PIPE_A;
+		phy = DPIO_PHY0;
+	} else {
+		pipe = PIPE_C;
+		phy = DPIO_PHY1;
+	}
+
+	/* since ref/cri clock was enabled */
+	udelay(1); /* >10ns for cmnreset, >0ns for sidereset */
+	vlv_set_power_well(dev_priv, power_well, true);
+
+	/* Poll for phypwrgood signal */
+	if (intel_de_wait_for_set(dev_priv, DISPLAY_PHY_STATUS,
+				  PHY_POWERGOOD(phy), 1))
+		drm_err(&dev_priv->drm, "Display PHY %d is not power up\n",
+			phy);
+
+	vlv_dpio_get(dev_priv);
+
+	/* Enable dynamic power down */
+	tmp = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW28);
+	tmp |= DPIO_DYNPWRDOWNEN_CH0 | DPIO_CL1POWERDOWNEN |
+		DPIO_SUS_CLK_CONFIG_GATE_CLKREQ;
+	vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW28, tmp);
+
+	if (id == VLV_DISP_PW_DPIO_CMN_BC) {
+		tmp = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW6_CH1);
+		tmp |= DPIO_DYNPWRDOWNEN_CH1;
+		vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW6_CH1, tmp);
+	} else {
+		/*
+		 * Force the non-existing CL2 off. BXT does this
+		 * too, so maybe it saves some power even though
+		 * CL2 doesn't exist?
+		 */
+		tmp = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW30);
+		tmp |= DPIO_CL2_LDOFUSE_PWRENB;
+		vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW30, tmp);
+	}
+
+	vlv_dpio_put(dev_priv);
+
+	dev_priv->display.power.chv_phy_control |= PHY_COM_LANE_RESET_DEASSERT(phy);
+	intel_de_write(dev_priv, DISPLAY_PHY_CONTROL,
+		       dev_priv->display.power.chv_phy_control);
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "Enabled DPIO PHY%d (PHY_CONTROL=0x%08x)\n",
+		    phy, dev_priv->display.power.chv_phy_control);
+
+	assert_chv_phy_status(dev_priv);
+}
+
+static void chv_dpio_cmn_power_well_disable(struct drm_i915_private *dev_priv,
+					    struct i915_power_well *power_well)
+{
+	enum i915_power_well_id id = i915_power_well_instance(power_well)->id;
+	enum dpio_phy phy;
+
+	drm_WARN_ON_ONCE(&dev_priv->drm,
+			 id != VLV_DISP_PW_DPIO_CMN_BC &&
+			 id != CHV_DISP_PW_DPIO_CMN_D);
+
+	if (id == VLV_DISP_PW_DPIO_CMN_BC) {
+		phy = DPIO_PHY0;
+		assert_pll_disabled(dev_priv, PIPE_A);
+		assert_pll_disabled(dev_priv, PIPE_B);
+	} else {
+		phy = DPIO_PHY1;
+		assert_pll_disabled(dev_priv, PIPE_C);
+	}
+
+	dev_priv->display.power.chv_phy_control &= ~PHY_COM_LANE_RESET_DEASSERT(phy);
+	intel_de_write(dev_priv, DISPLAY_PHY_CONTROL,
+		       dev_priv->display.power.chv_phy_control);
+
+	vlv_set_power_well(dev_priv, power_well, false);
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "Disabled DPIO PHY%d (PHY_CONTROL=0x%08x)\n",
+		    phy, dev_priv->display.power.chv_phy_control);
+
+	/* PHY is fully reset now, so we can enable the PHY state asserts */
+	dev_priv->display.power.chv_phy_assert[phy] = true;
+
+	assert_chv_phy_status(dev_priv);
+}
+
+static void assert_chv_phy_powergate(struct drm_i915_private *dev_priv, enum dpio_phy phy,
+				     enum dpio_channel ch, bool override, unsigned int mask)
+{
+	enum pipe pipe = phy == DPIO_PHY0 ? PIPE_A : PIPE_C;
+	u32 reg, val, expected, actual;
+
+	/*
+	 * The BIOS can leave the PHY is some weird state
+	 * where it doesn't fully power down some parts.
+	 * Disable the asserts until the PHY has been fully
+	 * reset (ie. the power well has been disabled at
+	 * least once).
+	 */
+	if (!dev_priv->display.power.chv_phy_assert[phy])
+		return;
+
+	if (ch == DPIO_CH0)
+		reg = _CHV_CMN_DW0_CH0;
+	else
+		reg = _CHV_CMN_DW6_CH1;
+
+	vlv_dpio_get(dev_priv);
+	val = vlv_dpio_read(dev_priv, pipe, reg);
+	vlv_dpio_put(dev_priv);
+
+	/*
+	 * This assumes !override is only used when the port is disabled.
+	 * All lanes should power down even without the override when
+	 * the port is disabled.
+	 */
+	if (!override || mask == 0xf) {
+		expected = DPIO_ALLDL_POWERDOWN | DPIO_ANYDL_POWERDOWN;
+		/*
+		 * If CH1 common lane is not active anymore
+		 * (eg. for pipe B DPLL) the entire channel will
+		 * shut down, which causes the common lane registers
+		 * to read as 0. That means we can't actually check
+		 * the lane power down status bits, but as the entire
+		 * register reads as 0 it's a good indication that the
+		 * channel is indeed entirely powered down.
+		 */
+		if (ch == DPIO_CH1 && val == 0)
+			expected = 0;
+	} else if (mask != 0x0) {
+		expected = DPIO_ANYDL_POWERDOWN;
+	} else {
+		expected = 0;
+	}
+
+	if (ch == DPIO_CH0)
+		actual = val >> DPIO_ANYDL_POWERDOWN_SHIFT_CH0;
+	else
+		actual = val >> DPIO_ANYDL_POWERDOWN_SHIFT_CH1;
+	actual &= DPIO_ALLDL_POWERDOWN | DPIO_ANYDL_POWERDOWN;
+
+	drm_WARN(&dev_priv->drm, actual != expected,
+		 "Unexpected DPIO lane power down: all %d, any %d. Expected: all %d, any %d. (0x%x = 0x%08x)\n",
+		 !!(actual & DPIO_ALLDL_POWERDOWN),
+		 !!(actual & DPIO_ANYDL_POWERDOWN),
+		 !!(expected & DPIO_ALLDL_POWERDOWN),
+		 !!(expected & DPIO_ANYDL_POWERDOWN),
+		 reg, val);
+}
+
+bool chv_phy_powergate_ch(struct drm_i915_private *dev_priv, enum dpio_phy phy,
+			  enum dpio_channel ch, bool override)
+{
+	struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
+	bool was_override;
+
+	mutex_lock(&power_domains->lock);
+
+	was_override = dev_priv->display.power.chv_phy_control & PHY_CH_POWER_DOWN_OVRD_EN(phy, ch);
+
+	if (override == was_override)
+		goto out;
+
+	if (override)
+		dev_priv->display.power.chv_phy_control |= PHY_CH_POWER_DOWN_OVRD_EN(phy, ch);
+	else
+		dev_priv->display.power.chv_phy_control &= ~PHY_CH_POWER_DOWN_OVRD_EN(phy, ch);
+
+	intel_de_write(dev_priv, DISPLAY_PHY_CONTROL,
+		       dev_priv->display.power.chv_phy_control);
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "Power gating DPIO PHY%d CH%d (DPIO_PHY_CONTROL=0x%08x)\n",
+		    phy, ch, dev_priv->display.power.chv_phy_control);
+
+	assert_chv_phy_status(dev_priv);
+
+out:
+	mutex_unlock(&power_domains->lock);
+
+	return was_override;
+}
+
+void chv_phy_powergate_lanes(struct intel_encoder *encoder,
+			     bool override, unsigned int mask)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
+	enum dpio_phy phy = vlv_dig_port_to_phy(enc_to_dig_port(encoder));
+	enum dpio_channel ch = vlv_dig_port_to_channel(enc_to_dig_port(encoder));
+
+	mutex_lock(&power_domains->lock);
+
+	dev_priv->display.power.chv_phy_control &= ~PHY_CH_POWER_DOWN_OVRD(0xf, phy, ch);
+	dev_priv->display.power.chv_phy_control |= PHY_CH_POWER_DOWN_OVRD(mask, phy, ch);
+
+	if (override)
+		dev_priv->display.power.chv_phy_control |= PHY_CH_POWER_DOWN_OVRD_EN(phy, ch);
+	else
+		dev_priv->display.power.chv_phy_control &= ~PHY_CH_POWER_DOWN_OVRD_EN(phy, ch);
+
+	intel_de_write(dev_priv, DISPLAY_PHY_CONTROL,
+		       dev_priv->display.power.chv_phy_control);
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "Power gating DPIO PHY%d CH%d lanes 0x%x (PHY_CONTROL=0x%08x)\n",
+		    phy, ch, mask, dev_priv->display.power.chv_phy_control);
+
+	assert_chv_phy_status(dev_priv);
+
+	assert_chv_phy_powergate(dev_priv, phy, ch, override, mask);
+
+	mutex_unlock(&power_domains->lock);
+}
+
+static bool chv_pipe_power_well_enabled(struct drm_i915_private *dev_priv,
+					struct i915_power_well *power_well)
+{
+	enum pipe pipe = PIPE_A;
+	bool enabled;
+	u32 state, ctrl;
+
+	vlv_punit_get(dev_priv);
+
+	state = vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM) & DP_SSS_MASK(pipe);
+	/*
+	 * We only ever set the power-on and power-gate states, anything
+	 * else is unexpected.
+	 */
+	drm_WARN_ON(&dev_priv->drm, state != DP_SSS_PWR_ON(pipe) &&
+		    state != DP_SSS_PWR_GATE(pipe));
+	enabled = state == DP_SSS_PWR_ON(pipe);
+
+	/*
+	 * A transient state at this point would mean some unexpected party
+	 * is poking at the power controls too.
+	 */
+	ctrl = vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM) & DP_SSC_MASK(pipe);
+	drm_WARN_ON(&dev_priv->drm, ctrl << 16 != state);
+
+	vlv_punit_put(dev_priv);
+
+	return enabled;
+}
+
+static void chv_set_pipe_power_well(struct drm_i915_private *dev_priv,
+				    struct i915_power_well *power_well,
+				    bool enable)
+{
+	enum pipe pipe = PIPE_A;
+	u32 state;
+	u32 ctrl;
+
+	state = enable ? DP_SSS_PWR_ON(pipe) : DP_SSS_PWR_GATE(pipe);
+
+	vlv_punit_get(dev_priv);
+
+#define COND \
+	((vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM) & DP_SSS_MASK(pipe)) == state)
+
+	if (COND)
+		goto out;
+
+	ctrl = vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM);
+	ctrl &= ~DP_SSC_MASK(pipe);
+	ctrl |= enable ? DP_SSC_PWR_ON(pipe) : DP_SSC_PWR_GATE(pipe);
+	vlv_punit_write(dev_priv, PUNIT_REG_DSPSSPM, ctrl);
+
+	if (wait_for(COND, 100))
+		drm_err(&dev_priv->drm,
+			"timeout setting power well state %08x (%08x)\n",
+			state,
+			vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM));
+
+#undef COND
+
+out:
+	vlv_punit_put(dev_priv);
+}
+
+static void chv_pipe_power_well_sync_hw(struct drm_i915_private *dev_priv,
+					struct i915_power_well *power_well)
+{
+	intel_de_write(dev_priv, DISPLAY_PHY_CONTROL,
+		       dev_priv->display.power.chv_phy_control);
+}
+
+static void chv_pipe_power_well_enable(struct drm_i915_private *dev_priv,
+				       struct i915_power_well *power_well)
+{
+	chv_set_pipe_power_well(dev_priv, power_well, true);
+
+	vlv_display_power_well_init(dev_priv);
+}
+
+static void chv_pipe_power_well_disable(struct drm_i915_private *dev_priv,
+					struct i915_power_well *power_well)
+{
+	vlv_display_power_well_deinit(dev_priv);
+
+	chv_set_pipe_power_well(dev_priv, power_well, false);
+}
+
+static void
+tgl_tc_cold_request(struct drm_i915_private *i915, bool block)
+{
+	u8 tries = 0;
+	int ret;
+
+	while (1) {
+		u32 low_val;
+		u32 high_val = 0;
+
+		if (block)
+			low_val = TGL_PCODE_EXIT_TCCOLD_DATA_L_BLOCK_REQ;
+		else
+			low_val = TGL_PCODE_EXIT_TCCOLD_DATA_L_UNBLOCK_REQ;
+
+		/*
+		 * Spec states that we should timeout the request after 200us
+		 * but the function below will timeout after 500us
+		 */
+		ret = snb_pcode_read(&i915->uncore, TGL_PCODE_TCCOLD, &low_val, &high_val);
+		if (ret == 0) {
+			if (block &&
+			    (low_val & TGL_PCODE_EXIT_TCCOLD_DATA_L_EXIT_FAILED))
+				ret = -EIO;
+			else
+				break;
+		}
+
+		if (++tries == 3)
+			break;
+
+		msleep(1);
+	}
+
+	if (ret)
+		drm_err(&i915->drm, "TC cold %sblock failed\n",
+			block ? "" : "un");
+	else
+		drm_dbg_kms(&i915->drm, "TC cold %sblock succeeded\n",
+			    block ? "" : "un");
+}
+
+static void
+tgl_tc_cold_off_power_well_enable(struct drm_i915_private *i915,
+				  struct i915_power_well *power_well)
+{
+	tgl_tc_cold_request(i915, true);
+}
+
+static void
+tgl_tc_cold_off_power_well_disable(struct drm_i915_private *i915,
+				   struct i915_power_well *power_well)
+{
+	tgl_tc_cold_request(i915, false);
+}
+
+static void
+tgl_tc_cold_off_power_well_sync_hw(struct drm_i915_private *i915,
+				   struct i915_power_well *power_well)
+{
+	if (intel_power_well_refcount(power_well) > 0)
+		tgl_tc_cold_off_power_well_enable(i915, power_well);
+	else
+		tgl_tc_cold_off_power_well_disable(i915, power_well);
+}
+
+static bool
+tgl_tc_cold_off_power_well_is_enabled(struct drm_i915_private *dev_priv,
+				      struct i915_power_well *power_well)
+{
+	/*
+	 * Not the correctly implementation but there is no way to just read it
+	 * from PCODE, so returning count to avoid state mismatch errors
+	 */
+	return intel_power_well_refcount(power_well);
+}
+
+static void xelpdp_aux_power_well_enable(struct drm_i915_private *dev_priv,
+					 struct i915_power_well *power_well)
+{
+	enum aux_ch aux_ch = i915_power_well_instance(power_well)->xelpdp.aux_ch;
+
+	intel_de_rmw(dev_priv, XELPDP_DP_AUX_CH_CTL(aux_ch),
+		     XELPDP_DP_AUX_CH_CTL_POWER_REQUEST,
+		     XELPDP_DP_AUX_CH_CTL_POWER_REQUEST);
+
+	/*
+	 * The power status flag cannot be used to determine whether aux
+	 * power wells have finished powering up.  Instead we're
+	 * expected to just wait a fixed 600us after raising the request
+	 * bit.
+	 */
+	usleep_range(600, 1200);
+}
+
+static void xelpdp_aux_power_well_disable(struct drm_i915_private *dev_priv,
+					  struct i915_power_well *power_well)
+{
+	enum aux_ch aux_ch = i915_power_well_instance(power_well)->xelpdp.aux_ch;
+
+	intel_de_rmw(dev_priv, XELPDP_DP_AUX_CH_CTL(aux_ch),
+		     XELPDP_DP_AUX_CH_CTL_POWER_REQUEST,
+		     0);
+	usleep_range(10, 30);
+}
+
+static bool xelpdp_aux_power_well_enabled(struct drm_i915_private *dev_priv,
+					  struct i915_power_well *power_well)
+{
+	enum aux_ch aux_ch = i915_power_well_instance(power_well)->xelpdp.aux_ch;
+
+	return intel_de_read(dev_priv, XELPDP_DP_AUX_CH_CTL(aux_ch)) &
+		XELPDP_DP_AUX_CH_CTL_POWER_STATUS;
+}
+
+const struct i915_power_well_ops i9xx_always_on_power_well_ops = {
+	.sync_hw = i9xx_power_well_sync_hw_noop,
+	.enable = i9xx_always_on_power_well_noop,
+	.disable = i9xx_always_on_power_well_noop,
+	.is_enabled = i9xx_always_on_power_well_enabled,
+};
+
+const struct i915_power_well_ops chv_pipe_power_well_ops = {
+	.sync_hw = chv_pipe_power_well_sync_hw,
+	.enable = chv_pipe_power_well_enable,
+	.disable = chv_pipe_power_well_disable,
+	.is_enabled = chv_pipe_power_well_enabled,
+};
+
+const struct i915_power_well_ops chv_dpio_cmn_power_well_ops = {
+	.sync_hw = i9xx_power_well_sync_hw_noop,
+	.enable = chv_dpio_cmn_power_well_enable,
+	.disable = chv_dpio_cmn_power_well_disable,
+	.is_enabled = vlv_power_well_enabled,
+};
+
+const struct i915_power_well_ops i830_pipes_power_well_ops = {
+	.sync_hw = i830_pipes_power_well_sync_hw,
+	.enable = i830_pipes_power_well_enable,
+	.disable = i830_pipes_power_well_disable,
+	.is_enabled = i830_pipes_power_well_enabled,
+};
+
+static const struct i915_power_well_regs hsw_power_well_regs = {
+	.bios	= HSW_PWR_WELL_CTL1,
+	.driver	= HSW_PWR_WELL_CTL2,
+	.kvmr	= HSW_PWR_WELL_CTL3,
+	.debug	= HSW_PWR_WELL_CTL4,
+};
+
+const struct i915_power_well_ops hsw_power_well_ops = {
+	.regs = &hsw_power_well_regs,
+	.sync_hw = hsw_power_well_sync_hw,
+	.enable = hsw_power_well_enable,
+	.disable = hsw_power_well_disable,
+	.is_enabled = hsw_power_well_enabled,
+};
+
+const struct i915_power_well_ops gen9_dc_off_power_well_ops = {
+	.sync_hw = i9xx_power_well_sync_hw_noop,
+	.enable = gen9_dc_off_power_well_enable,
+	.disable = gen9_dc_off_power_well_disable,
+	.is_enabled = gen9_dc_off_power_well_enabled,
+};
+
+const struct i915_power_well_ops bxt_dpio_cmn_power_well_ops = {
+	.sync_hw = i9xx_power_well_sync_hw_noop,
+	.enable = bxt_dpio_cmn_power_well_enable,
+	.disable = bxt_dpio_cmn_power_well_disable,
+	.is_enabled = bxt_dpio_cmn_power_well_enabled,
+};
+
+const struct i915_power_well_ops vlv_display_power_well_ops = {
+	.sync_hw = i9xx_power_well_sync_hw_noop,
+	.enable = vlv_display_power_well_enable,
+	.disable = vlv_display_power_well_disable,
+	.is_enabled = vlv_power_well_enabled,
+};
+
+const struct i915_power_well_ops vlv_dpio_cmn_power_well_ops = {
+	.sync_hw = i9xx_power_well_sync_hw_noop,
+	.enable = vlv_dpio_cmn_power_well_enable,
+	.disable = vlv_dpio_cmn_power_well_disable,
+	.is_enabled = vlv_power_well_enabled,
+};
+
+const struct i915_power_well_ops vlv_dpio_power_well_ops = {
+	.sync_hw = i9xx_power_well_sync_hw_noop,
+	.enable = vlv_power_well_enable,
+	.disable = vlv_power_well_disable,
+	.is_enabled = vlv_power_well_enabled,
+};
+
+static const struct i915_power_well_regs icl_aux_power_well_regs = {
+	.bios	= ICL_PWR_WELL_CTL_AUX1,
+	.driver	= ICL_PWR_WELL_CTL_AUX2,
+	.debug	= ICL_PWR_WELL_CTL_AUX4,
+};
+
+const struct i915_power_well_ops icl_aux_power_well_ops = {
+	.regs = &icl_aux_power_well_regs,
+	.sync_hw = hsw_power_well_sync_hw,
+	.enable = icl_aux_power_well_enable,
+	.disable = icl_aux_power_well_disable,
+	.is_enabled = hsw_power_well_enabled,
+};
+
+static const struct i915_power_well_regs icl_ddi_power_well_regs = {
+	.bios	= ICL_PWR_WELL_CTL_DDI1,
+	.driver	= ICL_PWR_WELL_CTL_DDI2,
+	.debug	= ICL_PWR_WELL_CTL_DDI4,
+};
+
+const struct i915_power_well_ops icl_ddi_power_well_ops = {
+	.regs = &icl_ddi_power_well_regs,
+	.sync_hw = hsw_power_well_sync_hw,
+	.enable = hsw_power_well_enable,
+	.disable = hsw_power_well_disable,
+	.is_enabled = hsw_power_well_enabled,
+};
+
+const struct i915_power_well_ops tgl_tc_cold_off_ops = {
+	.sync_hw = tgl_tc_cold_off_power_well_sync_hw,
+	.enable = tgl_tc_cold_off_power_well_enable,
+	.disable = tgl_tc_cold_off_power_well_disable,
+	.is_enabled = tgl_tc_cold_off_power_well_is_enabled,
+};
+
+const struct i915_power_well_ops xelpdp_aux_power_well_ops = {
+	.sync_hw = i9xx_power_well_sync_hw_noop,
+	.enable = xelpdp_aux_power_well_enable,
+	.disable = xelpdp_aux_power_well_disable,
+	.is_enabled = xelpdp_aux_power_well_enabled,
+};
diff --git a/drivers/gpu/drm/i915/display/intel_display_power_well.h b/drivers/gpu/drm/i915/display/intel_display_power_well.h
new file mode 100644
index 000000000..e13b521e3
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_display_power_well.h
@@ -0,0 +1,177 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+#ifndef __INTEL_DISPLAY_POWER_WELL_H__
+#define __INTEL_DISPLAY_POWER_WELL_H__
+
+#include <linux/types.h>
+
+#include "intel_display.h"
+#include "intel_display_power.h"
+
+struct drm_i915_private;
+struct i915_power_well;
+
+#define for_each_power_well(__dev_priv, __power_well)				\
+	for ((__power_well) = (__dev_priv)->display.power.domains.power_wells;	\
+	     (__power_well) - (__dev_priv)->display.power.domains.power_wells <	\
+		(__dev_priv)->display.power.domains.power_well_count;		\
+	     (__power_well)++)
+
+#define for_each_power_well_reverse(__dev_priv, __power_well)			\
+	for ((__power_well) = (__dev_priv)->display.power.domains.power_wells +		\
+			      (__dev_priv)->display.power.domains.power_well_count - 1;	\
+	     (__power_well) - (__dev_priv)->display.power.domains.power_wells >= 0;	\
+	     (__power_well)--)
+
+/*
+ * i915_power_well_id:
+ *
+ * IDs used to look up power wells. Power wells accessed directly bypassing
+ * the power domains framework must be assigned a unique ID. The rest of power
+ * wells must be assigned DISP_PW_ID_NONE.
+ */
+enum i915_power_well_id {
+	DISP_PW_ID_NONE = 0,		/* must be kept zero */
+
+	VLV_DISP_PW_DISP2D,
+	BXT_DISP_PW_DPIO_CMN_A,
+	VLV_DISP_PW_DPIO_CMN_BC,
+	GLK_DISP_PW_DPIO_CMN_C,
+	CHV_DISP_PW_DPIO_CMN_D,
+	HSW_DISP_PW_GLOBAL,
+	SKL_DISP_PW_MISC_IO,
+	SKL_DISP_PW_1,
+	SKL_DISP_PW_2,
+	ICL_DISP_PW_3,
+	SKL_DISP_DC_OFF,
+	TGL_DISP_PW_TC_COLD_OFF,
+};
+
+struct i915_power_well_instance {
+	const char *name;
+	const struct i915_power_domain_list {
+		const enum intel_display_power_domain *list;
+		u8 count;
+	} *domain_list;
+
+	/* unique identifier for this power well */
+	enum i915_power_well_id id;
+	/*
+	 * Arbitraty data associated with this power well. Platform and power
+	 * well specific.
+	 */
+	union {
+		struct {
+			/*
+			 * request/status flag index in the PUNIT power well
+			 * control/status registers.
+			 */
+			u8 idx;
+		} vlv;
+		struct {
+			enum dpio_phy phy;
+		} bxt;
+		struct {
+			/*
+			 * request/status flag index in the power well
+			 * constrol/status registers.
+			 */
+			u8 idx;
+		} hsw;
+		struct {
+			u8 aux_ch;
+		} xelpdp;
+	};
+};
+
+struct i915_power_well_desc {
+	const struct i915_power_well_ops *ops;
+	const struct i915_power_well_instance_list {
+		const struct i915_power_well_instance *list;
+		u8 count;
+	} *instances;
+
+	/* Mask of pipes whose IRQ logic is backed by the pw */
+	u16 irq_pipe_mask:4;
+	u16 always_on:1;
+	/*
+	 * Instead of waiting for the status bit to ack enables,
+	 * just wait a specific amount of time and then consider
+	 * the well enabled.
+	 */
+	u16 fixed_enable_delay:1;
+	/* The pw is backing the VGA functionality */
+	u16 has_vga:1;
+	u16 has_fuses:1;
+	/*
+	 * The pw is for an ICL+ TypeC PHY port in
+	 * Thunderbolt mode.
+	 */
+	u16 is_tc_tbt:1;
+};
+
+struct i915_power_well {
+	const struct i915_power_well_desc *desc;
+	struct intel_power_domain_mask domains;
+	/* power well enable/disable usage count */
+	int count;
+	/* cached hw enabled state */
+	bool hw_enabled;
+	/* index into desc->instances->list */
+	u8 instance_idx;
+};
+
+struct i915_power_well *lookup_power_well(struct drm_i915_private *i915,
+					  enum i915_power_well_id id);
+
+void intel_power_well_enable(struct drm_i915_private *i915,
+			     struct i915_power_well *power_well);
+void intel_power_well_disable(struct drm_i915_private *i915,
+			      struct i915_power_well *power_well);
+void intel_power_well_sync_hw(struct drm_i915_private *i915,
+			      struct i915_power_well *power_well);
+void intel_power_well_get(struct drm_i915_private *i915,
+			  struct i915_power_well *power_well);
+void intel_power_well_put(struct drm_i915_private *i915,
+			  struct i915_power_well *power_well);
+bool intel_power_well_is_enabled(struct drm_i915_private *i915,
+				 struct i915_power_well *power_well);
+bool intel_power_well_is_enabled_cached(struct i915_power_well *power_well);
+bool intel_display_power_well_is_enabled(struct drm_i915_private *dev_priv,
+					 enum i915_power_well_id power_well_id);
+bool intel_power_well_is_always_on(struct i915_power_well *power_well);
+const char *intel_power_well_name(struct i915_power_well *power_well);
+struct intel_power_domain_mask *intel_power_well_domains(struct i915_power_well *power_well);
+int intel_power_well_refcount(struct i915_power_well *power_well);
+
+void chv_phy_powergate_lanes(struct intel_encoder *encoder,
+			     bool override, unsigned int mask);
+bool chv_phy_powergate_ch(struct drm_i915_private *dev_priv, enum dpio_phy phy,
+			  enum dpio_channel ch, bool override);
+
+void gen9_enable_dc5(struct drm_i915_private *dev_priv);
+void skl_enable_dc6(struct drm_i915_private *dev_priv);
+void gen9_sanitize_dc_state(struct drm_i915_private *dev_priv);
+void gen9_set_dc_state(struct drm_i915_private *dev_priv, u32 state);
+void gen9_disable_dc_states(struct drm_i915_private *dev_priv);
+void bxt_enable_dc9(struct drm_i915_private *dev_priv);
+void bxt_disable_dc9(struct drm_i915_private *dev_priv);
+
+extern const struct i915_power_well_ops i9xx_always_on_power_well_ops;
+extern const struct i915_power_well_ops chv_pipe_power_well_ops;
+extern const struct i915_power_well_ops chv_dpio_cmn_power_well_ops;
+extern const struct i915_power_well_ops i830_pipes_power_well_ops;
+extern const struct i915_power_well_ops hsw_power_well_ops;
+extern const struct i915_power_well_ops gen9_dc_off_power_well_ops;
+extern const struct i915_power_well_ops bxt_dpio_cmn_power_well_ops;
+extern const struct i915_power_well_ops vlv_display_power_well_ops;
+extern const struct i915_power_well_ops vlv_dpio_cmn_power_well_ops;
+extern const struct i915_power_well_ops vlv_dpio_power_well_ops;
+extern const struct i915_power_well_ops icl_aux_power_well_ops;
+extern const struct i915_power_well_ops icl_ddi_power_well_ops;
+extern const struct i915_power_well_ops tgl_tc_cold_off_ops;
+extern const struct i915_power_well_ops xelpdp_aux_power_well_ops;
+
+#endif
diff --git a/drivers/gpu/drm/i915/display/intel_display_trace.c b/drivers/gpu/drm/i915/display/intel_display_trace.c
new file mode 100644
index 000000000..737979ada
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_display_trace.c
@@ -0,0 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#ifndef __CHECKER__
+#define CREATE_TRACE_POINTS
+#include "intel_display_trace.h"
+#endif
diff --git a/drivers/gpu/drm/i915/display/intel_display_trace.h b/drivers/gpu/drm/i915/display/intel_display_trace.h
new file mode 100644
index 000000000..2dd5a4b7f
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_display_trace.h
@@ -0,0 +1,589 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM i915
+
+#if !defined(__INTEL_DISPLAY_TRACE_H__) || defined(TRACE_HEADER_MULTI_READ)
+#define __INTEL_DISPLAY_TRACE_H__
+
+#include <linux/string_helpers.h>
+#include <linux/types.h>
+#include <linux/tracepoint.h>
+
+#include "i915_drv.h"
+#include "i915_irq.h"
+#include "intel_crtc.h"
+#include "intel_display_types.h"
+
+TRACE_EVENT(intel_pipe_enable,
+	    TP_PROTO(struct intel_crtc *crtc),
+	    TP_ARGS(crtc),
+
+	    TP_STRUCT__entry(
+			     __array(u32, frame, 3)
+			     __array(u32, scanline, 3)
+			     __field(enum pipe, pipe)
+			     ),
+	    TP_fast_assign(
+			   struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+			   struct intel_crtc *it__;
+			   for_each_intel_crtc(&dev_priv->drm, it__) {
+				   __entry->frame[it__->pipe] = intel_crtc_get_vblank_counter(it__);
+				   __entry->scanline[it__->pipe] = intel_get_crtc_scanline(it__);
+			   }
+			   __entry->pipe = crtc->pipe;
+			   ),
+
+	    TP_printk("pipe %c enable, pipe A: frame=%u, scanline=%u, pipe B: frame=%u, scanline=%u, pipe C: frame=%u, scanline=%u",
+		      pipe_name(__entry->pipe),
+		      __entry->frame[PIPE_A], __entry->scanline[PIPE_A],
+		      __entry->frame[PIPE_B], __entry->scanline[PIPE_B],
+		      __entry->frame[PIPE_C], __entry->scanline[PIPE_C])
+);
+
+TRACE_EVENT(intel_pipe_disable,
+	    TP_PROTO(struct intel_crtc *crtc),
+	    TP_ARGS(crtc),
+
+	    TP_STRUCT__entry(
+			     __array(u32, frame, 3)
+			     __array(u32, scanline, 3)
+			     __field(enum pipe, pipe)
+			     ),
+
+	    TP_fast_assign(
+			   struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+			   struct intel_crtc *it__;
+			   for_each_intel_crtc(&dev_priv->drm, it__) {
+				   __entry->frame[it__->pipe] = intel_crtc_get_vblank_counter(it__);
+				   __entry->scanline[it__->pipe] = intel_get_crtc_scanline(it__);
+			   }
+			   __entry->pipe = crtc->pipe;
+			   ),
+
+	    TP_printk("pipe %c disable, pipe A: frame=%u, scanline=%u, pipe B: frame=%u, scanline=%u, pipe C: frame=%u, scanline=%u",
+		      pipe_name(__entry->pipe),
+		      __entry->frame[PIPE_A], __entry->scanline[PIPE_A],
+		      __entry->frame[PIPE_B], __entry->scanline[PIPE_B],
+		      __entry->frame[PIPE_C], __entry->scanline[PIPE_C])
+);
+
+TRACE_EVENT(intel_pipe_crc,
+	    TP_PROTO(struct intel_crtc *crtc, const u32 *crcs),
+	    TP_ARGS(crtc, crcs),
+
+	    TP_STRUCT__entry(
+			     __field(enum pipe, pipe)
+			     __field(u32, frame)
+			     __field(u32, scanline)
+			     __array(u32, crcs, 5)
+			     ),
+
+	    TP_fast_assign(
+			   __entry->pipe = crtc->pipe;
+			   __entry->frame = intel_crtc_get_vblank_counter(crtc);
+			   __entry->scanline = intel_get_crtc_scanline(crtc);
+			   memcpy(__entry->crcs, crcs, sizeof(__entry->crcs));
+			   ),
+
+	    TP_printk("pipe %c, frame=%u, scanline=%u crc=%08x %08x %08x %08x %08x",
+		      pipe_name(__entry->pipe), __entry->frame, __entry->scanline,
+		      __entry->crcs[0], __entry->crcs[1], __entry->crcs[2],
+		      __entry->crcs[3], __entry->crcs[4])
+);
+
+TRACE_EVENT(intel_cpu_fifo_underrun,
+	    TP_PROTO(struct drm_i915_private *dev_priv, enum pipe pipe),
+	    TP_ARGS(dev_priv, pipe),
+
+	    TP_STRUCT__entry(
+			     __field(enum pipe, pipe)
+			     __field(u32, frame)
+			     __field(u32, scanline)
+			     ),
+
+	    TP_fast_assign(
+			    struct intel_crtc *crtc = intel_crtc_for_pipe(dev_priv, pipe);
+			   __entry->pipe = pipe;
+			   __entry->frame = intel_crtc_get_vblank_counter(crtc);
+			   __entry->scanline = intel_get_crtc_scanline(crtc);
+			   ),
+
+	    TP_printk("pipe %c, frame=%u, scanline=%u",
+		      pipe_name(__entry->pipe),
+		      __entry->frame, __entry->scanline)
+);
+
+TRACE_EVENT(intel_pch_fifo_underrun,
+	    TP_PROTO(struct drm_i915_private *dev_priv, enum pipe pch_transcoder),
+	    TP_ARGS(dev_priv, pch_transcoder),
+
+	    TP_STRUCT__entry(
+			     __field(enum pipe, pipe)
+			     __field(u32, frame)
+			     __field(u32, scanline)
+			     ),
+
+	    TP_fast_assign(
+			   enum pipe pipe = pch_transcoder;
+			   struct intel_crtc *crtc = intel_crtc_for_pipe(dev_priv, pipe);
+			   __entry->pipe = pipe;
+			   __entry->frame = intel_crtc_get_vblank_counter(crtc);
+			   __entry->scanline = intel_get_crtc_scanline(crtc);
+			   ),
+
+	    TP_printk("pch transcoder %c, frame=%u, scanline=%u",
+		      pipe_name(__entry->pipe),
+		      __entry->frame, __entry->scanline)
+);
+
+TRACE_EVENT(intel_memory_cxsr,
+	    TP_PROTO(struct drm_i915_private *dev_priv, bool old, bool new),
+	    TP_ARGS(dev_priv, old, new),
+
+	    TP_STRUCT__entry(
+			     __array(u32, frame, 3)
+			     __array(u32, scanline, 3)
+			     __field(bool, old)
+			     __field(bool, new)
+			     ),
+
+	    TP_fast_assign(
+			   struct intel_crtc *crtc;
+			   for_each_intel_crtc(&dev_priv->drm, crtc) {
+				   __entry->frame[crtc->pipe] = intel_crtc_get_vblank_counter(crtc);
+				   __entry->scanline[crtc->pipe] = intel_get_crtc_scanline(crtc);
+			   }
+			   __entry->old = old;
+			   __entry->new = new;
+			   ),
+
+	    TP_printk("%s->%s, pipe A: frame=%u, scanline=%u, pipe B: frame=%u, scanline=%u, pipe C: frame=%u, scanline=%u",
+		      str_on_off(__entry->old), str_on_off(__entry->new),
+		      __entry->frame[PIPE_A], __entry->scanline[PIPE_A],
+		      __entry->frame[PIPE_B], __entry->scanline[PIPE_B],
+		      __entry->frame[PIPE_C], __entry->scanline[PIPE_C])
+);
+
+TRACE_EVENT(g4x_wm,
+	    TP_PROTO(struct intel_crtc *crtc, const struct g4x_wm_values *wm),
+	    TP_ARGS(crtc, wm),
+
+	    TP_STRUCT__entry(
+			     __field(enum pipe, pipe)
+			     __field(u32, frame)
+			     __field(u32, scanline)
+			     __field(u16, primary)
+			     __field(u16, sprite)
+			     __field(u16, cursor)
+			     __field(u16, sr_plane)
+			     __field(u16, sr_cursor)
+			     __field(u16, sr_fbc)
+			     __field(u16, hpll_plane)
+			     __field(u16, hpll_cursor)
+			     __field(u16, hpll_fbc)
+			     __field(bool, cxsr)
+			     __field(bool, hpll)
+			     __field(bool, fbc)
+			     ),
+
+	    TP_fast_assign(
+			   __entry->pipe = crtc->pipe;
+			   __entry->frame = intel_crtc_get_vblank_counter(crtc);
+			   __entry->scanline = intel_get_crtc_scanline(crtc);
+			   __entry->primary = wm->pipe[crtc->pipe].plane[PLANE_PRIMARY];
+			   __entry->sprite = wm->pipe[crtc->pipe].plane[PLANE_SPRITE0];
+			   __entry->cursor = wm->pipe[crtc->pipe].plane[PLANE_CURSOR];
+			   __entry->sr_plane = wm->sr.plane;
+			   __entry->sr_cursor = wm->sr.cursor;
+			   __entry->sr_fbc = wm->sr.fbc;
+			   __entry->hpll_plane = wm->hpll.plane;
+			   __entry->hpll_cursor = wm->hpll.cursor;
+			   __entry->hpll_fbc = wm->hpll.fbc;
+			   __entry->cxsr = wm->cxsr;
+			   __entry->hpll = wm->hpll_en;
+			   __entry->fbc = wm->fbc_en;
+			   ),
+
+	    TP_printk("pipe %c, frame=%u, scanline=%u, wm %d/%d/%d, sr %s/%d/%d/%d, hpll %s/%d/%d/%d, fbc %s",
+		      pipe_name(__entry->pipe), __entry->frame, __entry->scanline,
+		      __entry->primary, __entry->sprite, __entry->cursor,
+		      str_yes_no(__entry->cxsr), __entry->sr_plane, __entry->sr_cursor, __entry->sr_fbc,
+		      str_yes_no(__entry->hpll), __entry->hpll_plane, __entry->hpll_cursor, __entry->hpll_fbc,
+		      str_yes_no(__entry->fbc))
+);
+
+TRACE_EVENT(vlv_wm,
+	    TP_PROTO(struct intel_crtc *crtc, const struct vlv_wm_values *wm),
+	    TP_ARGS(crtc, wm),
+
+	    TP_STRUCT__entry(
+			     __field(enum pipe, pipe)
+			     __field(u32, frame)
+			     __field(u32, scanline)
+			     __field(u32, level)
+			     __field(u32, cxsr)
+			     __field(u32, primary)
+			     __field(u32, sprite0)
+			     __field(u32, sprite1)
+			     __field(u32, cursor)
+			     __field(u32, sr_plane)
+			     __field(u32, sr_cursor)
+			     ),
+
+	    TP_fast_assign(
+			   __entry->pipe = crtc->pipe;
+			   __entry->frame = intel_crtc_get_vblank_counter(crtc);
+			   __entry->scanline = intel_get_crtc_scanline(crtc);
+			   __entry->level = wm->level;
+			   __entry->cxsr = wm->cxsr;
+			   __entry->primary = wm->pipe[crtc->pipe].plane[PLANE_PRIMARY];
+			   __entry->sprite0 = wm->pipe[crtc->pipe].plane[PLANE_SPRITE0];
+			   __entry->sprite1 = wm->pipe[crtc->pipe].plane[PLANE_SPRITE1];
+			   __entry->cursor = wm->pipe[crtc->pipe].plane[PLANE_CURSOR];
+			   __entry->sr_plane = wm->sr.plane;
+			   __entry->sr_cursor = wm->sr.cursor;
+			   ),
+
+	    TP_printk("pipe %c, frame=%u, scanline=%u, level=%d, cxsr=%d, wm %d/%d/%d/%d, sr %d/%d",
+		      pipe_name(__entry->pipe), __entry->frame,
+		      __entry->scanline, __entry->level, __entry->cxsr,
+		      __entry->primary, __entry->sprite0, __entry->sprite1, __entry->cursor,
+		      __entry->sr_plane, __entry->sr_cursor)
+);
+
+TRACE_EVENT(vlv_fifo_size,
+	    TP_PROTO(struct intel_crtc *crtc, u32 sprite0_start, u32 sprite1_start, u32 fifo_size),
+	    TP_ARGS(crtc, sprite0_start, sprite1_start, fifo_size),
+
+	    TP_STRUCT__entry(
+			     __field(enum pipe, pipe)
+			     __field(u32, frame)
+			     __field(u32, scanline)
+			     __field(u32, sprite0_start)
+			     __field(u32, sprite1_start)
+			     __field(u32, fifo_size)
+			     ),
+
+	    TP_fast_assign(
+			   __entry->pipe = crtc->pipe;
+			   __entry->frame = intel_crtc_get_vblank_counter(crtc);
+			   __entry->scanline = intel_get_crtc_scanline(crtc);
+			   __entry->sprite0_start = sprite0_start;
+			   __entry->sprite1_start = sprite1_start;
+			   __entry->fifo_size = fifo_size;
+			   ),
+
+	    TP_printk("pipe %c, frame=%u, scanline=%u, %d/%d/%d",
+		      pipe_name(__entry->pipe), __entry->frame,
+		      __entry->scanline, __entry->sprite0_start,
+		      __entry->sprite1_start, __entry->fifo_size)
+);
+
+TRACE_EVENT(intel_plane_update_noarm,
+	    TP_PROTO(struct drm_plane *plane, struct intel_crtc *crtc),
+	    TP_ARGS(plane, crtc),
+
+	    TP_STRUCT__entry(
+			     __field(enum pipe, pipe)
+			     __field(u32, frame)
+			     __field(u32, scanline)
+			     __array(int, src, 4)
+			     __array(int, dst, 4)
+			     __string(name, plane->name)
+			     ),
+
+	    TP_fast_assign(
+			   __assign_str(name, plane->name);
+			   __entry->pipe = crtc->pipe;
+			   __entry->frame = intel_crtc_get_vblank_counter(crtc);
+			   __entry->scanline = intel_get_crtc_scanline(crtc);
+			   memcpy(__entry->src, &plane->state->src, sizeof(__entry->src));
+			   memcpy(__entry->dst, &plane->state->dst, sizeof(__entry->dst));
+			   ),
+
+	    TP_printk("pipe %c, plane %s, frame=%u, scanline=%u, " DRM_RECT_FP_FMT " -> " DRM_RECT_FMT,
+		      pipe_name(__entry->pipe), __get_str(name),
+		      __entry->frame, __entry->scanline,
+		      DRM_RECT_FP_ARG((const struct drm_rect *)__entry->src),
+		      DRM_RECT_ARG((const struct drm_rect *)__entry->dst))
+);
+
+TRACE_EVENT(intel_plane_update_arm,
+	    TP_PROTO(struct drm_plane *plane, struct intel_crtc *crtc),
+	    TP_ARGS(plane, crtc),
+
+	    TP_STRUCT__entry(
+			     __field(enum pipe, pipe)
+			     __field(u32, frame)
+			     __field(u32, scanline)
+			     __array(int, src, 4)
+			     __array(int, dst, 4)
+			     __string(name, plane->name)
+			     ),
+
+	    TP_fast_assign(
+			   __assign_str(name, plane->name);
+			   __entry->pipe = crtc->pipe;
+			   __entry->frame = intel_crtc_get_vblank_counter(crtc);
+			   __entry->scanline = intel_get_crtc_scanline(crtc);
+			   memcpy(__entry->src, &plane->state->src, sizeof(__entry->src));
+			   memcpy(__entry->dst, &plane->state->dst, sizeof(__entry->dst));
+			   ),
+
+	    TP_printk("pipe %c, plane %s, frame=%u, scanline=%u, " DRM_RECT_FP_FMT " -> " DRM_RECT_FMT,
+		      pipe_name(__entry->pipe), __get_str(name),
+		      __entry->frame, __entry->scanline,
+		      DRM_RECT_FP_ARG((const struct drm_rect *)__entry->src),
+		      DRM_RECT_ARG((const struct drm_rect *)__entry->dst))
+);
+
+TRACE_EVENT(intel_plane_disable_arm,
+	    TP_PROTO(struct drm_plane *plane, struct intel_crtc *crtc),
+	    TP_ARGS(plane, crtc),
+
+	    TP_STRUCT__entry(
+			     __field(enum pipe, pipe)
+			     __field(u32, frame)
+			     __field(u32, scanline)
+			     __string(name, plane->name)
+			     ),
+
+	    TP_fast_assign(
+			   __assign_str(name, plane->name);
+			   __entry->pipe = crtc->pipe;
+			   __entry->frame = intel_crtc_get_vblank_counter(crtc);
+			   __entry->scanline = intel_get_crtc_scanline(crtc);
+			   ),
+
+	    TP_printk("pipe %c, plane %s, frame=%u, scanline=%u",
+		      pipe_name(__entry->pipe), __get_str(name),
+		      __entry->frame, __entry->scanline)
+);
+
+TRACE_EVENT(intel_fbc_activate,
+	    TP_PROTO(struct intel_plane *plane),
+	    TP_ARGS(plane),
+
+	    TP_STRUCT__entry(
+			     __field(enum pipe, pipe)
+			     __field(u32, frame)
+			     __field(u32, scanline)
+			     ),
+
+	    TP_fast_assign(
+			   struct intel_crtc *crtc = intel_crtc_for_pipe(to_i915(plane->base.dev),
+									 plane->pipe);
+			   __entry->pipe = crtc->pipe;
+			   __entry->frame = intel_crtc_get_vblank_counter(crtc);
+			   __entry->scanline = intel_get_crtc_scanline(crtc);
+			   ),
+
+	    TP_printk("pipe %c, frame=%u, scanline=%u",
+		      pipe_name(__entry->pipe), __entry->frame, __entry->scanline)
+);
+
+TRACE_EVENT(intel_fbc_deactivate,
+	    TP_PROTO(struct intel_plane *plane),
+	    TP_ARGS(plane),
+
+	    TP_STRUCT__entry(
+			     __field(enum pipe, pipe)
+			     __field(u32, frame)
+			     __field(u32, scanline)
+			     ),
+
+	    TP_fast_assign(
+			   struct intel_crtc *crtc = intel_crtc_for_pipe(to_i915(plane->base.dev),
+									 plane->pipe);
+			   __entry->pipe = crtc->pipe;
+			   __entry->frame = intel_crtc_get_vblank_counter(crtc);
+			   __entry->scanline = intel_get_crtc_scanline(crtc);
+			   ),
+
+	    TP_printk("pipe %c, frame=%u, scanline=%u",
+		      pipe_name(__entry->pipe), __entry->frame, __entry->scanline)
+);
+
+TRACE_EVENT(intel_fbc_nuke,
+	    TP_PROTO(struct intel_plane *plane),
+	    TP_ARGS(plane),
+
+	    TP_STRUCT__entry(
+			     __field(enum pipe, pipe)
+			     __field(u32, frame)
+			     __field(u32, scanline)
+			     ),
+
+	    TP_fast_assign(
+			   struct intel_crtc *crtc = intel_crtc_for_pipe(to_i915(plane->base.dev),
+									 plane->pipe);
+			   __entry->pipe = crtc->pipe;
+			   __entry->frame = intel_crtc_get_vblank_counter(crtc);
+			   __entry->scanline = intel_get_crtc_scanline(crtc);
+			   ),
+
+	    TP_printk("pipe %c, frame=%u, scanline=%u",
+		      pipe_name(__entry->pipe), __entry->frame, __entry->scanline)
+);
+
+TRACE_EVENT(intel_crtc_vblank_work_start,
+	    TP_PROTO(struct intel_crtc *crtc),
+	    TP_ARGS(crtc),
+
+	    TP_STRUCT__entry(
+			     __field(enum pipe, pipe)
+			     __field(u32, frame)
+			     __field(u32, scanline)
+			     ),
+
+	    TP_fast_assign(
+			   __entry->pipe = crtc->pipe;
+			   __entry->frame = intel_crtc_get_vblank_counter(crtc);
+			   __entry->scanline = intel_get_crtc_scanline(crtc);
+			   ),
+
+	    TP_printk("pipe %c, frame=%u, scanline=%u",
+		      pipe_name(__entry->pipe), __entry->frame,
+		       __entry->scanline)
+);
+
+TRACE_EVENT(intel_crtc_vblank_work_end,
+	    TP_PROTO(struct intel_crtc *crtc),
+	    TP_ARGS(crtc),
+
+	    TP_STRUCT__entry(
+			     __field(enum pipe, pipe)
+			     __field(u32, frame)
+			     __field(u32, scanline)
+			     ),
+
+	    TP_fast_assign(
+			   __entry->pipe = crtc->pipe;
+			   __entry->frame = intel_crtc_get_vblank_counter(crtc);
+			   __entry->scanline = intel_get_crtc_scanline(crtc);
+			   ),
+
+	    TP_printk("pipe %c, frame=%u, scanline=%u",
+		      pipe_name(__entry->pipe), __entry->frame,
+		       __entry->scanline)
+);
+
+TRACE_EVENT(intel_pipe_update_start,
+	    TP_PROTO(struct intel_crtc *crtc),
+	    TP_ARGS(crtc),
+
+	    TP_STRUCT__entry(
+			     __field(enum pipe, pipe)
+			     __field(u32, frame)
+			     __field(u32, scanline)
+			     __field(u32, min)
+			     __field(u32, max)
+			     ),
+
+	    TP_fast_assign(
+			   __entry->pipe = crtc->pipe;
+			   __entry->frame = intel_crtc_get_vblank_counter(crtc);
+			   __entry->scanline = intel_get_crtc_scanline(crtc);
+			   __entry->min = crtc->debug.min_vbl;
+			   __entry->max = crtc->debug.max_vbl;
+			   ),
+
+	    TP_printk("pipe %c, frame=%u, scanline=%u, min=%u, max=%u",
+		      pipe_name(__entry->pipe), __entry->frame,
+		       __entry->scanline, __entry->min, __entry->max)
+);
+
+TRACE_EVENT(intel_pipe_update_vblank_evaded,
+	    TP_PROTO(struct intel_crtc *crtc),
+	    TP_ARGS(crtc),
+
+	    TP_STRUCT__entry(
+			     __field(enum pipe, pipe)
+			     __field(u32, frame)
+			     __field(u32, scanline)
+			     __field(u32, min)
+			     __field(u32, max)
+			     ),
+
+	    TP_fast_assign(
+			   __entry->pipe = crtc->pipe;
+			   __entry->frame = crtc->debug.start_vbl_count;
+			   __entry->scanline = crtc->debug.scanline_start;
+			   __entry->min = crtc->debug.min_vbl;
+			   __entry->max = crtc->debug.max_vbl;
+			   ),
+
+	    TP_printk("pipe %c, frame=%u, scanline=%u, min=%u, max=%u",
+		      pipe_name(__entry->pipe), __entry->frame,
+		       __entry->scanline, __entry->min, __entry->max)
+);
+
+TRACE_EVENT(intel_pipe_update_end,
+	    TP_PROTO(struct intel_crtc *crtc, u32 frame, int scanline_end),
+	    TP_ARGS(crtc, frame, scanline_end),
+
+	    TP_STRUCT__entry(
+			     __field(enum pipe, pipe)
+			     __field(u32, frame)
+			     __field(u32, scanline)
+			     ),
+
+	    TP_fast_assign(
+			   __entry->pipe = crtc->pipe;
+			   __entry->frame = frame;
+			   __entry->scanline = scanline_end;
+			   ),
+
+	    TP_printk("pipe %c, frame=%u, scanline=%u",
+		      pipe_name(__entry->pipe), __entry->frame,
+		      __entry->scanline)
+);
+
+TRACE_EVENT(intel_frontbuffer_invalidate,
+	    TP_PROTO(unsigned int frontbuffer_bits, unsigned int origin),
+	    TP_ARGS(frontbuffer_bits, origin),
+
+	    TP_STRUCT__entry(
+			     __field(unsigned int, frontbuffer_bits)
+			     __field(unsigned int, origin)
+			     ),
+
+	    TP_fast_assign(
+			   __entry->frontbuffer_bits = frontbuffer_bits;
+			   __entry->origin = origin;
+			   ),
+
+	    TP_printk("frontbuffer_bits=0x%08x, origin=%u",
+		      __entry->frontbuffer_bits, __entry->origin)
+);
+
+TRACE_EVENT(intel_frontbuffer_flush,
+	    TP_PROTO(unsigned int frontbuffer_bits, unsigned int origin),
+	    TP_ARGS(frontbuffer_bits, origin),
+
+	    TP_STRUCT__entry(
+			     __field(unsigned int, frontbuffer_bits)
+			     __field(unsigned int, origin)
+			     ),
+
+	    TP_fast_assign(
+			   __entry->frontbuffer_bits = frontbuffer_bits;
+			   __entry->origin = origin;
+			   ),
+
+	    TP_printk("frontbuffer_bits=0x%08x, origin=%u",
+		      __entry->frontbuffer_bits, __entry->origin)
+);
+
+#endif /* __INTEL_DISPLAY_TRACE_H__ */
+
+/* This part must be outside protection */
+#undef TRACE_INCLUDE_PATH
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_PATH ../../drivers/gpu/drm/i915/display
+#define TRACE_INCLUDE_FILE intel_display_trace
+#include <trace/define_trace.h>
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
new file mode 100644
index 000000000..a8bf91a21
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -0,0 +1,2074 @@
+/*
+ * Copyright (c) 2006 Dave Airlie <airlied@linux.ie>
+ * Copyright (c) 2007-2008 Intel Corporation
+ *   Jesse Barnes <jesse.barnes@intel.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#ifndef __INTEL_DISPLAY_TYPES_H__
+#define __INTEL_DISPLAY_TYPES_H__
+
+#include <linux/i2c.h>
+#include <linux/pm_qos.h>
+#include <linux/pwm.h>
+#include <linux/sched/clock.h>
+
+#include <drm/display/drm_dp_dual_mode_helper.h>
+#include <drm/display/drm_dp_mst_helper.h>
+#include <drm/display/drm_dsc.h>
+#include <drm/drm_atomic.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_encoder.h>
+#include <drm/drm_fourcc.h>
+#include <drm/drm_framebuffer.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_rect.h>
+#include <drm/drm_vblank.h>
+#include <drm/drm_vblank_work.h>
+#include <drm/i915_mei_hdcp_interface.h>
+#include <media/cec-notifier.h>
+
+#include "i915_vma.h"
+#include "i915_vma_types.h"
+#include "intel_bios.h"
+#include "intel_display.h"
+#include "intel_display_power.h"
+#include "intel_dpll_mgr.h"
+#include "intel_pm_types.h"
+
+struct drm_printer;
+struct __intel_global_objs_state;
+struct intel_ddi_buf_trans;
+struct intel_fbc;
+struct intel_connector;
+
+/*
+ * Display related stuff
+ */
+
+/* these are outputs from the chip - integrated only
+   external chips are via DVO or SDVO output */
+enum intel_output_type {
+	INTEL_OUTPUT_UNUSED = 0,
+	INTEL_OUTPUT_ANALOG = 1,
+	INTEL_OUTPUT_DVO = 2,
+	INTEL_OUTPUT_SDVO = 3,
+	INTEL_OUTPUT_LVDS = 4,
+	INTEL_OUTPUT_TVOUT = 5,
+	INTEL_OUTPUT_HDMI = 6,
+	INTEL_OUTPUT_DP = 7,
+	INTEL_OUTPUT_EDP = 8,
+	INTEL_OUTPUT_DSI = 9,
+	INTEL_OUTPUT_DDI = 10,
+	INTEL_OUTPUT_DP_MST = 11,
+};
+
+enum hdmi_force_audio {
+	HDMI_AUDIO_OFF_DVI = -2,	/* no aux data for HDMI-DVI converter */
+	HDMI_AUDIO_OFF,			/* force turn off HDMI audio */
+	HDMI_AUDIO_AUTO,		/* trust EDID */
+	HDMI_AUDIO_ON,			/* force turn on HDMI audio */
+};
+
+/* "Broadcast RGB" property */
+enum intel_broadcast_rgb {
+	INTEL_BROADCAST_RGB_AUTO,
+	INTEL_BROADCAST_RGB_FULL,
+	INTEL_BROADCAST_RGB_LIMITED,
+};
+
+struct intel_fb_view {
+	/*
+	 * The remap information used in the remapped and rotated views to
+	 * create the DMA scatter-gather list for each FB color plane. This sg
+	 * list is created along with the view type (gtt.type) specific
+	 * i915_vma object and contains the list of FB object pages (reordered
+	 * in the rotated view) that are visible in the view.
+	 * In the normal view the FB object's backing store sg list is used
+	 * directly and hence the remap information here is not used.
+	 */
+	struct i915_gtt_view gtt;
+
+	/*
+	 * The GTT view (gtt.type) specific information for each FB color
+	 * plane. In the normal GTT view all formats (up to 4 color planes),
+	 * in the rotated and remapped GTT view all no-CCS formats (up to 2
+	 * color planes) are supported.
+	 *
+	 * The view information shared by all FB color planes in the FB,
+	 * like dst x/y and src/dst width, is stored separately in
+	 * intel_plane_state.
+	 */
+	struct i915_color_plane_view {
+		u32 offset;
+		unsigned int x, y;
+		/*
+		 * Plane stride in:
+		 *   bytes for 0/180 degree rotation
+		 *   pixels for 90/270 degree rotation
+		 */
+		unsigned int mapping_stride;
+		unsigned int scanout_stride;
+	} color_plane[4];
+};
+
+struct intel_framebuffer {
+	struct drm_framebuffer base;
+	struct intel_frontbuffer *frontbuffer;
+
+	/* Params to remap the FB pages and program the plane registers in each view. */
+	struct intel_fb_view normal_view;
+	union {
+		struct intel_fb_view rotated_view;
+		struct intel_fb_view remapped_view;
+	};
+
+	struct i915_address_space *dpt_vm;
+};
+
+enum intel_hotplug_state {
+	INTEL_HOTPLUG_UNCHANGED,
+	INTEL_HOTPLUG_CHANGED,
+	INTEL_HOTPLUG_RETRY,
+};
+
+struct intel_encoder {
+	struct drm_encoder base;
+
+	enum intel_output_type type;
+	enum port port;
+	u16 cloneable;
+	u8 pipe_mask;
+	enum intel_hotplug_state (*hotplug)(struct intel_encoder *encoder,
+					    struct intel_connector *connector);
+	enum intel_output_type (*compute_output_type)(struct intel_encoder *,
+						      struct intel_crtc_state *,
+						      struct drm_connector_state *);
+	int (*compute_config)(struct intel_encoder *,
+			      struct intel_crtc_state *,
+			      struct drm_connector_state *);
+	int (*compute_config_late)(struct intel_encoder *,
+				   struct intel_crtc_state *,
+				   struct drm_connector_state *);
+	void (*update_prepare)(struct intel_atomic_state *,
+			       struct intel_encoder *,
+			       struct intel_crtc *);
+	void (*pre_pll_enable)(struct intel_atomic_state *,
+			       struct intel_encoder *,
+			       const struct intel_crtc_state *,
+			       const struct drm_connector_state *);
+	void (*pre_enable)(struct intel_atomic_state *,
+			   struct intel_encoder *,
+			   const struct intel_crtc_state *,
+			   const struct drm_connector_state *);
+	void (*enable)(struct intel_atomic_state *,
+		       struct intel_encoder *,
+		       const struct intel_crtc_state *,
+		       const struct drm_connector_state *);
+	void (*update_complete)(struct intel_atomic_state *,
+				struct intel_encoder *,
+				struct intel_crtc *);
+	void (*disable)(struct intel_atomic_state *,
+			struct intel_encoder *,
+			const struct intel_crtc_state *,
+			const struct drm_connector_state *);
+	void (*post_disable)(struct intel_atomic_state *,
+			     struct intel_encoder *,
+			     const struct intel_crtc_state *,
+			     const struct drm_connector_state *);
+	void (*post_pll_disable)(struct intel_atomic_state *,
+				 struct intel_encoder *,
+				 const struct intel_crtc_state *,
+				 const struct drm_connector_state *);
+	void (*update_pipe)(struct intel_atomic_state *,
+			    struct intel_encoder *,
+			    const struct intel_crtc_state *,
+			    const struct drm_connector_state *);
+	/* Read out the current hw state of this connector, returning true if
+	 * the encoder is active. If the encoder is enabled it also set the pipe
+	 * it is connected to in the pipe parameter. */
+	bool (*get_hw_state)(struct intel_encoder *, enum pipe *pipe);
+	/* Reconstructs the equivalent mode flags for the current hardware
+	 * state. This must be called _after_ display->get_pipe_config has
+	 * pre-filled the pipe config. Note that intel_encoder->base.crtc must
+	 * be set correctly before calling this function. */
+	void (*get_config)(struct intel_encoder *,
+			   struct intel_crtc_state *pipe_config);
+
+	/*
+	 * Optional hook called during init/resume to sync any state
+	 * stored in the encoder (eg. DP link parameters) wrt. the HW state.
+	 */
+	void (*sync_state)(struct intel_encoder *encoder,
+			   const struct intel_crtc_state *crtc_state);
+
+	/*
+	 * Optional hook, returning true if this encoder allows a fastset
+	 * during the initial commit, false otherwise.
+	 */
+	bool (*initial_fastset_check)(struct intel_encoder *encoder,
+				      struct intel_crtc_state *crtc_state);
+
+	/*
+	 * Acquires the power domains needed for an active encoder during
+	 * hardware state readout.
+	 */
+	void (*get_power_domains)(struct intel_encoder *encoder,
+				  struct intel_crtc_state *crtc_state);
+	/*
+	 * Called during system suspend after all pending requests for the
+	 * encoder are flushed (for example for DP AUX transactions) and
+	 * device interrupts are disabled.
+	 */
+	void (*suspend)(struct intel_encoder *);
+	/*
+	 * Called during system reboot/shutdown after all the
+	 * encoders have been disabled and suspended.
+	 */
+	void (*shutdown)(struct intel_encoder *encoder);
+	/*
+	 * Enable/disable the clock to the port.
+	 */
+	void (*enable_clock)(struct intel_encoder *encoder,
+			     const struct intel_crtc_state *crtc_state);
+	void (*disable_clock)(struct intel_encoder *encoder);
+	/*
+	 * Returns whether the port clock is enabled or not.
+	 */
+	bool (*is_clock_enabled)(struct intel_encoder *encoder);
+	const struct intel_ddi_buf_trans *(*get_buf_trans)(struct intel_encoder *encoder,
+							   const struct intel_crtc_state *crtc_state,
+							   int *n_entries);
+	void (*set_signal_levels)(struct intel_encoder *encoder,
+				  const struct intel_crtc_state *crtc_state);
+
+	enum hpd_pin hpd_pin;
+	enum intel_display_power_domain power_domain;
+	/* for communication with audio component; protected by av_mutex */
+	const struct drm_connector *audio_connector;
+
+	/* VBT information for this encoder (may be NULL for older platforms) */
+	const struct intel_bios_encoder_data *devdata;
+};
+
+struct intel_panel_bl_funcs {
+	/* Connector and platform specific backlight functions */
+	int (*setup)(struct intel_connector *connector, enum pipe pipe);
+	u32 (*get)(struct intel_connector *connector, enum pipe pipe);
+	void (*set)(const struct drm_connector_state *conn_state, u32 level);
+	void (*disable)(const struct drm_connector_state *conn_state, u32 level);
+	void (*enable)(const struct intel_crtc_state *crtc_state,
+		       const struct drm_connector_state *conn_state, u32 level);
+	u32 (*hz_to_pwm)(struct intel_connector *connector, u32 hz);
+};
+
+enum drrs_type {
+	DRRS_TYPE_NONE,
+	DRRS_TYPE_STATIC,
+	DRRS_TYPE_SEAMLESS,
+};
+
+struct intel_vbt_panel_data {
+	struct drm_display_mode *lfp_lvds_vbt_mode; /* if any */
+	struct drm_display_mode *sdvo_lvds_vbt_mode; /* if any */
+
+	/* Feature bits */
+	int panel_type;
+	unsigned int lvds_dither:1;
+	unsigned int bios_lvds_val; /* initial [PCH_]LVDS reg val in VBIOS */
+
+	bool vrr;
+
+	u8 seamless_drrs_min_refresh_rate;
+	enum drrs_type drrs_type;
+
+	struct {
+		int max_link_rate;
+		int rate;
+		int lanes;
+		int preemphasis;
+		int vswing;
+		int bpp;
+		struct edp_power_seq pps;
+		u8 drrs_msa_timing_delay;
+		bool low_vswing;
+		bool initialized;
+		bool hobl;
+	} edp;
+
+	struct {
+		bool enable;
+		bool full_link;
+		bool require_aux_wakeup;
+		int idle_frames;
+		int tp1_wakeup_time_us;
+		int tp2_tp3_wakeup_time_us;
+		int psr2_tp2_tp3_wakeup_time_us;
+	} psr;
+
+	struct {
+		u16 pwm_freq_hz;
+		u16 brightness_precision_bits;
+		bool present;
+		bool active_low_pwm;
+		u8 min_brightness;	/* min_brightness/255 of max */
+		u8 controller;		/* brightness controller number */
+		enum intel_backlight_type type;
+	} backlight;
+
+	/* MIPI DSI */
+	struct {
+		u16 panel_id;
+		struct mipi_config *config;
+		struct mipi_pps_data *pps;
+		u16 bl_ports;
+		u16 cabc_ports;
+		u8 seq_version;
+		u32 size;
+		u8 *data;
+		const u8 *sequence[MIPI_SEQ_MAX];
+		u8 *deassert_seq; /* Used by fixup_mipi_sequences() */
+		enum drm_panel_orientation orientation;
+	} dsi;
+};
+
+struct intel_panel {
+	struct list_head fixed_modes;
+
+	/* backlight */
+	struct {
+		bool present;
+		u32 level;
+		u32 min;
+		u32 max;
+		bool enabled;
+		bool combination_mode;	/* gen 2/4 only */
+		bool active_low_pwm;
+		bool alternate_pwm_increment;	/* lpt+ */
+
+		/* PWM chip */
+		u32 pwm_level_min;
+		u32 pwm_level_max;
+		bool pwm_enabled;
+		bool util_pin_active_low;	/* bxt+ */
+		u8 controller;		/* bxt+ only */
+		struct pwm_device *pwm;
+		struct pwm_state pwm_state;
+
+		/* DPCD backlight */
+		union {
+			struct {
+				struct drm_edp_backlight_info info;
+			} vesa;
+			struct {
+				bool sdr_uses_aux;
+			} intel;
+		} edp;
+
+		struct backlight_device *device;
+
+		const struct intel_panel_bl_funcs *funcs;
+		const struct intel_panel_bl_funcs *pwm_funcs;
+		void (*power)(struct intel_connector *, bool enable);
+	} backlight;
+
+	struct intel_vbt_panel_data vbt;
+};
+
+struct intel_digital_port;
+
+enum check_link_response {
+	HDCP_LINK_PROTECTED	= 0,
+	HDCP_TOPOLOGY_CHANGE,
+	HDCP_LINK_INTEGRITY_FAILURE,
+	HDCP_REAUTH_REQUEST
+};
+
+/*
+ * This structure serves as a translation layer between the generic HDCP code
+ * and the bus-specific code. What that means is that HDCP over HDMI differs
+ * from HDCP over DP, so to account for these differences, we need to
+ * communicate with the receiver through this shim.
+ *
+ * For completeness, the 2 buses differ in the following ways:
+ *	- DP AUX vs. DDC
+ *		HDCP registers on the receiver are set via DP AUX for DP, and
+ *		they are set via DDC for HDMI.
+ *	- Receiver register offsets
+ *		The offsets of the registers are different for DP vs. HDMI
+ *	- Receiver register masks/offsets
+ *		For instance, the ready bit for the KSV fifo is in a different
+ *		place on DP vs HDMI
+ *	- Receiver register names
+ *		Seriously. In the DP spec, the 16-bit register containing
+ *		downstream information is called BINFO, on HDMI it's called
+ *		BSTATUS. To confuse matters further, DP has a BSTATUS register
+ *		with a completely different definition.
+ *	- KSV FIFO
+ *		On HDMI, the ksv fifo is read all at once, whereas on DP it must
+ *		be read 3 keys at a time
+ *	- Aksv output
+ *		Since Aksv is hidden in hardware, there's different procedures
+ *		to send it over DP AUX vs DDC
+ */
+struct intel_hdcp_shim {
+	/* Outputs the transmitter's An and Aksv values to the receiver. */
+	int (*write_an_aksv)(struct intel_digital_port *dig_port, u8 *an);
+
+	/* Reads the receiver's key selection vector */
+	int (*read_bksv)(struct intel_digital_port *dig_port, u8 *bksv);
+
+	/*
+	 * Reads BINFO from DP receivers and BSTATUS from HDMI receivers. The
+	 * definitions are the same in the respective specs, but the names are
+	 * different. Call it BSTATUS since that's the name the HDMI spec
+	 * uses and it was there first.
+	 */
+	int (*read_bstatus)(struct intel_digital_port *dig_port,
+			    u8 *bstatus);
+
+	/* Determines whether a repeater is present downstream */
+	int (*repeater_present)(struct intel_digital_port *dig_port,
+				bool *repeater_present);
+
+	/* Reads the receiver's Ri' value */
+	int (*read_ri_prime)(struct intel_digital_port *dig_port, u8 *ri);
+
+	/* Determines if the receiver's KSV FIFO is ready for consumption */
+	int (*read_ksv_ready)(struct intel_digital_port *dig_port,
+			      bool *ksv_ready);
+
+	/* Reads the ksv fifo for num_downstream devices */
+	int (*read_ksv_fifo)(struct intel_digital_port *dig_port,
+			     int num_downstream, u8 *ksv_fifo);
+
+	/* Reads a 32-bit part of V' from the receiver */
+	int (*read_v_prime_part)(struct intel_digital_port *dig_port,
+				 int i, u32 *part);
+
+	/* Enables HDCP signalling on the port */
+	int (*toggle_signalling)(struct intel_digital_port *dig_port,
+				 enum transcoder cpu_transcoder,
+				 bool enable);
+
+	/* Enable/Disable stream encryption on DP MST Transport Link */
+	int (*stream_encryption)(struct intel_connector *connector,
+				 bool enable);
+
+	/* Ensures the link is still protected */
+	bool (*check_link)(struct intel_digital_port *dig_port,
+			   struct intel_connector *connector);
+
+	/* Detects panel's hdcp capability. This is optional for HDMI. */
+	int (*hdcp_capable)(struct intel_digital_port *dig_port,
+			    bool *hdcp_capable);
+
+	/* HDCP adaptation(DP/HDMI) required on the port */
+	enum hdcp_wired_protocol protocol;
+
+	/* Detects whether sink is HDCP2.2 capable */
+	int (*hdcp_2_2_capable)(struct intel_digital_port *dig_port,
+				bool *capable);
+
+	/* Write HDCP2.2 messages */
+	int (*write_2_2_msg)(struct intel_digital_port *dig_port,
+			     void *buf, size_t size);
+
+	/* Read HDCP2.2 messages */
+	int (*read_2_2_msg)(struct intel_digital_port *dig_port,
+			    u8 msg_id, void *buf, size_t size);
+
+	/*
+	 * Implementation of DP HDCP2.2 Errata for the communication of stream
+	 * type to Receivers. In DP HDCP2.2 Stream type is one of the input to
+	 * the HDCP2.2 Cipher for En/De-Cryption. Not applicable for HDMI.
+	 */
+	int (*config_stream_type)(struct intel_digital_port *dig_port,
+				  bool is_repeater, u8 type);
+
+	/* Enable/Disable HDCP 2.2 stream encryption on DP MST Transport Link */
+	int (*stream_2_2_encryption)(struct intel_connector *connector,
+				     bool enable);
+
+	/* HDCP2.2 Link Integrity Check */
+	int (*check_2_2_link)(struct intel_digital_port *dig_port,
+			      struct intel_connector *connector);
+};
+
+struct intel_hdcp {
+	const struct intel_hdcp_shim *shim;
+	/* Mutex for hdcp state of the connector */
+	struct mutex mutex;
+	u64 value;
+	struct delayed_work check_work;
+	struct work_struct prop_work;
+
+	/* HDCP1.4 Encryption status */
+	bool hdcp_encrypted;
+
+	/* HDCP2.2 related definitions */
+	/* Flag indicates whether this connector supports HDCP2.2 or not. */
+	bool hdcp2_supported;
+
+	/* HDCP2.2 Encryption status */
+	bool hdcp2_encrypted;
+
+	/*
+	 * Content Stream Type defined by content owner. TYPE0(0x0) content can
+	 * flow in the link protected by HDCP2.2 or HDCP1.4, where as TYPE1(0x1)
+	 * content can flow only through a link protected by HDCP2.2.
+	 */
+	u8 content_type;
+
+	bool is_paired;
+	bool is_repeater;
+
+	/*
+	 * Count of ReceiverID_List received. Initialized to 0 at AKE_INIT.
+	 * Incremented after processing the RepeaterAuth_Send_ReceiverID_List.
+	 * When it rolls over re-auth has to be triggered.
+	 */
+	u32 seq_num_v;
+
+	/*
+	 * Count of RepeaterAuth_Stream_Manage msg propagated.
+	 * Initialized to 0 on AKE_INIT. Incremented after every successful
+	 * transmission of RepeaterAuth_Stream_Manage message. When it rolls
+	 * over re-Auth has to be triggered.
+	 */
+	u32 seq_num_m;
+
+	/*
+	 * Work queue to signal the CP_IRQ. Used for the waiters to read the
+	 * available information from HDCP DP sink.
+	 */
+	wait_queue_head_t cp_irq_queue;
+	atomic_t cp_irq_count;
+	int cp_irq_count_cached;
+
+	/*
+	 * HDCP register access for gen12+ need the transcoder associated.
+	 * Transcoder attached to the connector could be changed at modeset.
+	 * Hence caching the transcoder here.
+	 */
+	enum transcoder cpu_transcoder;
+	/* Only used for DP MST stream encryption */
+	enum transcoder stream_transcoder;
+};
+
+struct intel_connector {
+	struct drm_connector base;
+	/*
+	 * The fixed encoder this connector is connected to.
+	 */
+	struct intel_encoder *encoder;
+
+	/* ACPI device id for ACPI and driver cooperation */
+	u32 acpi_device_id;
+
+	/* Reads out the current hw, returning true if the connector is enabled
+	 * and active (i.e. dpms ON state). */
+	bool (*get_hw_state)(struct intel_connector *);
+
+	/* Panel info for eDP and LVDS */
+	struct intel_panel panel;
+
+	/* Cached EDID for eDP and LVDS. May hold ERR_PTR for invalid EDID. */
+	struct edid *edid;
+	struct edid *detect_edid;
+
+	/* Number of times hotplug detection was tried after an HPD interrupt */
+	int hotplug_retries;
+
+	/* since POLL and HPD connectors may use the same HPD line keep the native
+	   state of connector->polled in case hotplug storm detection changes it */
+	u8 polled;
+
+	struct drm_dp_mst_port *port;
+
+	struct intel_dp *mst_port;
+
+	/* Work struct to schedule a uevent on link train failure */
+	struct work_struct modeset_retry_work;
+
+	struct intel_hdcp hdcp;
+};
+
+struct intel_digital_connector_state {
+	struct drm_connector_state base;
+
+	enum hdmi_force_audio force_audio;
+	int broadcast_rgb;
+};
+
+#define to_intel_digital_connector_state(x) container_of(x, struct intel_digital_connector_state, base)
+
+struct dpll {
+	/* given values */
+	int n;
+	int m1, m2;
+	int p1, p2;
+	/* derived values */
+	int	dot;
+	int	vco;
+	int	m;
+	int	p;
+};
+
+struct intel_atomic_state {
+	struct drm_atomic_state base;
+
+	intel_wakeref_t wakeref;
+
+	struct __intel_global_objs_state *global_objs;
+	int num_global_objs;
+
+	bool dpll_set, modeset;
+
+	struct intel_shared_dpll_state shared_dpll[I915_NUM_PLLS];
+
+	/*
+	 * Current watermarks can't be trusted during hardware readout, so
+	 * don't bother calculating intermediate watermarks.
+	 */
+	bool skip_intermediate_wm;
+
+	bool rps_interactive;
+
+	struct i915_sw_fence commit_ready;
+
+	struct llist_node freed;
+};
+
+struct intel_plane_state {
+	struct drm_plane_state uapi;
+
+	/*
+	 * actual hardware state, the state we program to the hardware.
+	 * The following members are used to verify the hardware state:
+	 * During initial hw readout, they need to be copied from uapi.
+	 */
+	struct {
+		struct drm_crtc *crtc;
+		struct drm_framebuffer *fb;
+
+		u16 alpha;
+		u16 pixel_blend_mode;
+		unsigned int rotation;
+		enum drm_color_encoding color_encoding;
+		enum drm_color_range color_range;
+		enum drm_scaling_filter scaling_filter;
+	} hw;
+
+	struct i915_vma *ggtt_vma;
+	struct i915_vma *dpt_vma;
+	unsigned long flags;
+#define PLANE_HAS_FENCE BIT(0)
+
+	struct intel_fb_view view;
+
+	/* Plane pxp decryption state */
+	bool decrypt;
+
+	/* Plane state to display black pixels when pxp is borked */
+	bool force_black;
+
+	/* plane control register */
+	u32 ctl;
+
+	/* plane color control register */
+	u32 color_ctl;
+
+	/* chroma upsampler control register */
+	u32 cus_ctl;
+
+	/*
+	 * scaler_id
+	 *    = -1 : not using a scaler
+	 *    >=  0 : using a scalers
+	 *
+	 * plane requiring a scaler:
+	 *   - During check_plane, its bit is set in
+	 *     crtc_state->scaler_state.scaler_users by calling helper function
+	 *     update_scaler_plane.
+	 *   - scaler_id indicates the scaler it got assigned.
+	 *
+	 * plane doesn't require a scaler:
+	 *   - this can happen when scaling is no more required or plane simply
+	 *     got disabled.
+	 *   - During check_plane, corresponding bit is reset in
+	 *     crtc_state->scaler_state.scaler_users by calling helper function
+	 *     update_scaler_plane.
+	 */
+	int scaler_id;
+
+	/*
+	 * planar_linked_plane:
+	 *
+	 * ICL planar formats require 2 planes that are updated as pairs.
+	 * This member is used to make sure the other plane is also updated
+	 * when required, and for update_slave() to find the correct
+	 * plane_state to pass as argument.
+	 */
+	struct intel_plane *planar_linked_plane;
+
+	/*
+	 * planar_slave:
+	 * If set don't update use the linked plane's state for updating
+	 * this plane during atomic commit with the update_slave() callback.
+	 *
+	 * It's also used by the watermark code to ignore wm calculations on
+	 * this plane. They're calculated by the linked plane's wm code.
+	 */
+	u32 planar_slave;
+
+	struct drm_intel_sprite_colorkey ckey;
+
+	struct drm_rect psr2_sel_fetch_area;
+
+	/* Clear Color Value */
+	u64 ccval;
+
+	const char *no_fbc_reason;
+};
+
+struct intel_initial_plane_config {
+	struct intel_framebuffer *fb;
+	struct i915_vma *vma;
+	unsigned int tiling;
+	int size;
+	u32 base;
+	u8 rotation;
+};
+
+struct intel_scaler {
+	int in_use;
+	u32 mode;
+};
+
+struct intel_crtc_scaler_state {
+#define SKL_NUM_SCALERS 2
+	struct intel_scaler scalers[SKL_NUM_SCALERS];
+
+	/*
+	 * scaler_users: keeps track of users requesting scalers on this crtc.
+	 *
+	 *     If a bit is set, a user is using a scaler.
+	 *     Here user can be a plane or crtc as defined below:
+	 *       bits 0-30 - plane (bit position is index from drm_plane_index)
+	 *       bit 31    - crtc
+	 *
+	 * Instead of creating a new index to cover planes and crtc, using
+	 * existing drm_plane_index for planes which is well less than 31
+	 * planes and bit 31 for crtc. This should be fine to cover all
+	 * our platforms.
+	 *
+	 * intel_atomic_setup_scalers will setup available scalers to users
+	 * requesting scalers. It will gracefully fail if request exceeds
+	 * avilability.
+	 */
+#define SKL_CRTC_INDEX 31
+	unsigned scaler_users;
+
+	/* scaler used by crtc for panel fitting purpose */
+	int scaler_id;
+};
+
+/* {crtc,crtc_state}->mode_flags */
+/* Flag to get scanline using frame time stamps */
+#define I915_MODE_FLAG_GET_SCANLINE_FROM_TIMESTAMP (1<<1)
+/* Flag to use the scanline counter instead of the pixel counter */
+#define I915_MODE_FLAG_USE_SCANLINE_COUNTER (1<<2)
+/*
+ * TE0 or TE1 flag is set if the crtc has a DSI encoder which
+ * is operating in command mode.
+ * Flag to use TE from DSI0 instead of VBI in command mode
+ */
+#define I915_MODE_FLAG_DSI_USE_TE0 (1<<3)
+/* Flag to use TE from DSI1 instead of VBI in command mode */
+#define I915_MODE_FLAG_DSI_USE_TE1 (1<<4)
+/* Flag to indicate mipi dsi periodic command mode where we do not get TE */
+#define I915_MODE_FLAG_DSI_PERIODIC_CMD_MODE (1<<5)
+/* Do tricks to make vblank timestamps sane with VRR? */
+#define I915_MODE_FLAG_VRR (1<<6)
+
+struct intel_wm_level {
+	bool enable;
+	u32 pri_val;
+	u32 spr_val;
+	u32 cur_val;
+	u32 fbc_val;
+};
+
+struct intel_pipe_wm {
+	struct intel_wm_level wm[5];
+	bool fbc_wm_enabled;
+	bool pipe_enabled;
+	bool sprites_enabled;
+	bool sprites_scaled;
+};
+
+struct skl_wm_level {
+	u16 min_ddb_alloc;
+	u16 blocks;
+	u8 lines;
+	bool enable;
+	bool ignore_lines;
+	bool can_sagv;
+};
+
+struct skl_plane_wm {
+	struct skl_wm_level wm[8];
+	struct skl_wm_level uv_wm[8];
+	struct skl_wm_level trans_wm;
+	struct {
+		struct skl_wm_level wm0;
+		struct skl_wm_level trans_wm;
+	} sagv;
+	bool is_planar;
+};
+
+struct skl_pipe_wm {
+	struct skl_plane_wm planes[I915_MAX_PLANES];
+	bool use_sagv_wm;
+};
+
+enum vlv_wm_level {
+	VLV_WM_LEVEL_PM2,
+	VLV_WM_LEVEL_PM5,
+	VLV_WM_LEVEL_DDR_DVFS,
+	NUM_VLV_WM_LEVELS,
+};
+
+struct vlv_wm_state {
+	struct g4x_pipe_wm wm[NUM_VLV_WM_LEVELS];
+	struct g4x_sr_wm sr[NUM_VLV_WM_LEVELS];
+	u8 num_levels;
+	bool cxsr;
+};
+
+struct vlv_fifo_state {
+	u16 plane[I915_MAX_PLANES];
+};
+
+enum g4x_wm_level {
+	G4X_WM_LEVEL_NORMAL,
+	G4X_WM_LEVEL_SR,
+	G4X_WM_LEVEL_HPLL,
+	NUM_G4X_WM_LEVELS,
+};
+
+struct g4x_wm_state {
+	struct g4x_pipe_wm wm;
+	struct g4x_sr_wm sr;
+	struct g4x_sr_wm hpll;
+	bool cxsr;
+	bool hpll_en;
+	bool fbc_en;
+};
+
+struct intel_crtc_wm_state {
+	union {
+		/*
+		 * raw:
+		 * The "raw" watermark values produced by the formula
+		 * given the plane's current state. They do not consider
+		 * how much FIFO is actually allocated for each plane.
+		 *
+		 * optimal:
+		 * The "optimal" watermark values given the current
+		 * state of the planes and the amount of FIFO
+		 * allocated to each, ignoring any previous state
+		 * of the planes.
+		 *
+		 * intermediate:
+		 * The "intermediate" watermark values when transitioning
+		 * between the old and new "optimal" values. Used when
+		 * the watermark registers are single buffered and hence
+		 * their state changes asynchronously with regards to the
+		 * actual plane registers. These are essentially the
+		 * worst case combination of the old and new "optimal"
+		 * watermarks, which are therefore safe to use when the
+		 * plane is in either its old or new state.
+		 */
+		struct {
+			struct intel_pipe_wm intermediate;
+			struct intel_pipe_wm optimal;
+		} ilk;
+
+		struct {
+			struct skl_pipe_wm raw;
+			/* gen9+ only needs 1-step wm programming */
+			struct skl_pipe_wm optimal;
+			struct skl_ddb_entry ddb;
+			/*
+			 * pre-icl: for packed/planar CbCr
+			 * icl+: for everything
+			 */
+			struct skl_ddb_entry plane_ddb[I915_MAX_PLANES];
+			/* pre-icl: for planar Y */
+			struct skl_ddb_entry plane_ddb_y[I915_MAX_PLANES];
+		} skl;
+
+		struct {
+			struct g4x_pipe_wm raw[NUM_VLV_WM_LEVELS]; /* not inverted */
+			struct vlv_wm_state intermediate; /* inverted */
+			struct vlv_wm_state optimal; /* inverted */
+			struct vlv_fifo_state fifo_state;
+		} vlv;
+
+		struct {
+			struct g4x_pipe_wm raw[NUM_G4X_WM_LEVELS];
+			struct g4x_wm_state intermediate;
+			struct g4x_wm_state optimal;
+		} g4x;
+	};
+
+	/*
+	 * Platforms with two-step watermark programming will need to
+	 * update watermark programming post-vblank to switch from the
+	 * safe intermediate watermarks to the optimal final
+	 * watermarks.
+	 */
+	bool need_postvbl_update;
+};
+
+enum intel_output_format {
+	INTEL_OUTPUT_FORMAT_RGB,
+	INTEL_OUTPUT_FORMAT_YCBCR420,
+	INTEL_OUTPUT_FORMAT_YCBCR444,
+};
+
+struct intel_mpllb_state {
+	u32 clock; /* in KHz */
+	u32 ref_control;
+	u32 mpllb_cp;
+	u32 mpllb_div;
+	u32 mpllb_div2;
+	u32 mpllb_fracn1;
+	u32 mpllb_fracn2;
+	u32 mpllb_sscen;
+	u32 mpllb_sscstep;
+};
+
+struct intel_crtc_state {
+	/*
+	 * uapi (drm) state. This is the software state shown to userspace.
+	 * In particular, the following members are used for bookkeeping:
+	 * - crtc
+	 * - state
+	 * - *_changed
+	 * - event
+	 * - commit
+	 * - mode_blob
+	 */
+	struct drm_crtc_state uapi;
+
+	/*
+	 * actual hardware state, the state we program to the hardware.
+	 * The following members are used to verify the hardware state:
+	 * - enable
+	 * - active
+	 * - mode / pipe_mode / adjusted_mode
+	 * - color property blobs.
+	 *
+	 * During initial hw readout, they need to be copied to uapi.
+	 *
+	 * Bigjoiner will allow a transcoder mode that spans 2 pipes;
+	 * Use the pipe_mode for calculations like watermarks, pipe
+	 * scaler, and bandwidth.
+	 *
+	 * Use adjusted_mode for things that need to know the full
+	 * mode on the transcoder, which spans all pipes.
+	 */
+	struct {
+		bool active, enable;
+		struct drm_property_blob *degamma_lut, *gamma_lut, *ctm;
+		struct drm_display_mode mode, pipe_mode, adjusted_mode;
+		enum drm_scaling_filter scaling_filter;
+	} hw;
+
+	/**
+	 * quirks - bitfield with hw state readout quirks
+	 *
+	 * For various reasons the hw state readout code might not be able to
+	 * completely faithfully read out the current state. These cases are
+	 * tracked with quirk flags so that fastboot and state checker can act
+	 * accordingly.
+	 */
+#define PIPE_CONFIG_QUIRK_MODE_SYNC_FLAGS	(1<<0) /* unreliable sync mode.flags */
+	unsigned long quirks;
+
+	unsigned fb_bits; /* framebuffers to flip */
+	bool update_pipe; /* can a fast modeset be performed? */
+	bool disable_cxsr;
+	bool update_wm_pre, update_wm_post; /* watermarks are updated */
+	bool fifo_changed; /* FIFO split is changed */
+	bool preload_luts;
+	bool inherited; /* state inherited from BIOS? */
+
+	/* Ask the hardware to actually async flip? */
+	bool do_async_flip;
+
+	/* Pipe source size (ie. panel fitter input size)
+	 * All planes will be positioned inside this space,
+	 * and get clipped at the edges. */
+	struct drm_rect pipe_src;
+
+	/*
+	 * Pipe pixel rate, adjusted for
+	 * panel fitter/pipe scaler downscaling.
+	 */
+	unsigned int pixel_rate;
+
+	/* Whether to set up the PCH/FDI. Note that we never allow sharing
+	 * between pch encoders and cpu encoders. */
+	bool has_pch_encoder;
+
+	/* Are we sending infoframes on the attached port */
+	bool has_infoframe;
+
+	/* CPU Transcoder for the pipe. Currently this can only differ from the
+	 * pipe on Haswell and later (where we have a special eDP transcoder)
+	 * and Broxton (where we have special DSI transcoders). */
+	enum transcoder cpu_transcoder;
+
+	/*
+	 * Use reduced/limited/broadcast rbg range, compressing from the full
+	 * range fed into the crtcs.
+	 */
+	bool limited_color_range;
+
+	/* Bitmask of encoder types (enum intel_output_type)
+	 * driven by the pipe.
+	 */
+	unsigned int output_types;
+
+	/* Whether we should send NULL infoframes. Required for audio. */
+	bool has_hdmi_sink;
+
+	/* Audio enabled on this pipe. Only valid if either has_hdmi_sink or
+	 * has_dp_encoder is set. */
+	bool has_audio;
+
+	/*
+	 * Enable dithering, used when the selected pipe bpp doesn't match the
+	 * plane bpp.
+	 */
+	bool dither;
+
+	/*
+	 * Dither gets enabled for 18bpp which causes CRC mismatch errors for
+	 * compliance video pattern tests.
+	 * Disable dither only if it is a compliance test request for
+	 * 18bpp.
+	 */
+	bool dither_force_disable;
+
+	/* Controls for the clock computation, to override various stages. */
+	bool clock_set;
+
+	/* SDVO TV has a bunch of special case. To make multifunction encoders
+	 * work correctly, we need to track this at runtime.*/
+	bool sdvo_tv_clock;
+
+	/*
+	 * crtc bandwidth limit, don't increase pipe bpp or clock if not really
+	 * required. This is set in the 2nd loop of calling encoder's
+	 * ->compute_config if the first pick doesn't work out.
+	 */
+	bool bw_constrained;
+
+	/* Settings for the intel dpll used on pretty much everything but
+	 * haswell. */
+	struct dpll dpll;
+
+	/* Selected dpll when shared or NULL. */
+	struct intel_shared_dpll *shared_dpll;
+
+	/* Actual register state of the dpll, for shared dpll cross-checking. */
+	union {
+		struct intel_dpll_hw_state dpll_hw_state;
+		struct intel_mpllb_state mpllb_state;
+	};
+
+	/*
+	 * ICL reserved DPLLs for the CRTC/port. The active PLL is selected by
+	 * setting shared_dpll and dpll_hw_state to one of these reserved ones.
+	 */
+	struct icl_port_dpll {
+		struct intel_shared_dpll *pll;
+		struct intel_dpll_hw_state hw_state;
+	} icl_port_dplls[ICL_PORT_DPLL_COUNT];
+
+	/* DSI PLL registers */
+	struct {
+		u32 ctrl, div;
+	} dsi_pll;
+
+	int pipe_bpp;
+	struct intel_link_m_n dp_m_n;
+
+	/* m2_n2 for eDP downclock */
+	struct intel_link_m_n dp_m2_n2;
+	bool has_drrs;
+	bool seamless_m_n;
+
+	/* PSR is supported but might not be enabled due the lack of enabled planes */
+	bool has_psr;
+	bool has_psr2;
+	bool enable_psr2_sel_fetch;
+	bool req_psr2_sdp_prior_scanline;
+	u32 dc3co_exitline;
+	u16 su_y_granularity;
+	struct drm_dp_vsc_sdp psr_vsc;
+
+	/*
+	 * Frequence the dpll for the port should run at. Differs from the
+	 * adjusted dotclock e.g. for DP or 10/12bpc hdmi mode. This is also
+	 * already multiplied by pixel_multiplier.
+	 */
+	int port_clock;
+
+	/* Used by SDVO (and if we ever fix it, HDMI). */
+	unsigned pixel_multiplier;
+
+	/* I915_MODE_FLAG_* */
+	u8 mode_flags;
+
+	u8 lane_count;
+
+	/*
+	 * Used by platforms having DP/HDMI PHY with programmable lane
+	 * latency optimization.
+	 */
+	u8 lane_lat_optim_mask;
+
+	/* minimum acceptable voltage level */
+	u8 min_voltage_level;
+
+	/* Panel fitter controls for gen2-gen4 + VLV */
+	struct {
+		u32 control;
+		u32 pgm_ratios;
+		u32 lvds_border_bits;
+	} gmch_pfit;
+
+	/* Panel fitter placement and size for Ironlake+ */
+	struct {
+		struct drm_rect dst;
+		bool enabled;
+		bool force_thru;
+	} pch_pfit;
+
+	/* FDI configuration, only valid if has_pch_encoder is set. */
+	int fdi_lanes;
+	struct intel_link_m_n fdi_m_n;
+
+	bool ips_enabled;
+
+	bool crc_enabled;
+
+	bool double_wide;
+
+	int pbn;
+
+	struct intel_crtc_scaler_state scaler_state;
+
+	/* w/a for waiting 2 vblanks during crtc enable */
+	enum pipe hsw_workaround_pipe;
+
+	/* IVB sprite scaling w/a (WaCxSRDisabledForSpriteScaling:ivb) */
+	bool disable_lp_wm;
+
+	struct intel_crtc_wm_state wm;
+
+	int min_cdclk[I915_MAX_PLANES];
+
+	/* for packed/planar CbCr */
+	u32 data_rate[I915_MAX_PLANES];
+	/* for planar Y */
+	u32 data_rate_y[I915_MAX_PLANES];
+
+	/* FIXME unify with data_rate[]? */
+	u64 rel_data_rate[I915_MAX_PLANES];
+	u64 rel_data_rate_y[I915_MAX_PLANES];
+
+	/* Gamma mode programmed on the pipe */
+	u32 gamma_mode;
+
+	union {
+		/* CSC mode programmed on the pipe */
+		u32 csc_mode;
+
+		/* CHV CGM mode */
+		u32 cgm_mode;
+	};
+
+	/* bitmask of logically enabled planes (enum plane_id) */
+	u8 enabled_planes;
+
+	/* bitmask of actually visible planes (enum plane_id) */
+	u8 active_planes;
+	u8 scaled_planes;
+	u8 nv12_planes;
+	u8 c8_planes;
+
+	/* bitmask of planes that will be updated during the commit */
+	u8 update_planes;
+
+	u8 framestart_delay; /* 1-4 */
+	u8 msa_timing_delay; /* 0-3 */
+
+	struct {
+		u32 enable;
+		u32 gcp;
+		union hdmi_infoframe avi;
+		union hdmi_infoframe spd;
+		union hdmi_infoframe hdmi;
+		union hdmi_infoframe drm;
+		struct drm_dp_vsc_sdp vsc;
+	} infoframes;
+
+	/* HDMI scrambling status */
+	bool hdmi_scrambling;
+
+	/* HDMI High TMDS char rate ratio */
+	bool hdmi_high_tmds_clock_ratio;
+
+	/* Output format RGB/YCBCR etc */
+	enum intel_output_format output_format;
+
+	/* enable pipe gamma? */
+	bool gamma_enable;
+
+	/* enable pipe csc? */
+	bool csc_enable;
+
+	/* big joiner pipe bitmask */
+	u8 bigjoiner_pipes;
+
+	/* Display Stream compression state */
+	struct {
+		bool compression_enable;
+		bool dsc_split;
+		u16 compressed_bpp;
+		u8 slice_count;
+		struct drm_dsc_config config;
+	} dsc;
+
+	/* HSW+ linetime watermarks */
+	u16 linetime;
+	u16 ips_linetime;
+
+	/* Forward Error correction State */
+	bool fec_enable;
+
+	/* Pointer to master transcoder in case of tiled displays */
+	enum transcoder master_transcoder;
+
+	/* Bitmask to indicate slaves attached */
+	u8 sync_mode_slaves_mask;
+
+	/* Only valid on TGL+ */
+	enum transcoder mst_master_transcoder;
+
+	/* For DSB related info */
+	struct intel_dsb *dsb;
+
+	u32 psr2_man_track_ctl;
+
+	/* Variable Refresh Rate state */
+	struct {
+		bool enable;
+		u8 pipeline_full;
+		u16 flipline, vmin, vmax, guardband;
+	} vrr;
+
+	/* Stream Splitter for eDP MSO */
+	struct {
+		bool enable;
+		u8 link_count;
+		u8 pixel_overlap;
+	} splitter;
+
+	/* for loading single buffered registers during vblank */
+	struct drm_vblank_work vblank_work;
+};
+
+enum intel_pipe_crc_source {
+	INTEL_PIPE_CRC_SOURCE_NONE,
+	INTEL_PIPE_CRC_SOURCE_PLANE1,
+	INTEL_PIPE_CRC_SOURCE_PLANE2,
+	INTEL_PIPE_CRC_SOURCE_PLANE3,
+	INTEL_PIPE_CRC_SOURCE_PLANE4,
+	INTEL_PIPE_CRC_SOURCE_PLANE5,
+	INTEL_PIPE_CRC_SOURCE_PLANE6,
+	INTEL_PIPE_CRC_SOURCE_PLANE7,
+	INTEL_PIPE_CRC_SOURCE_PIPE,
+	/* TV/DP on pre-gen5/vlv can't use the pipe source. */
+	INTEL_PIPE_CRC_SOURCE_TV,
+	INTEL_PIPE_CRC_SOURCE_DP_B,
+	INTEL_PIPE_CRC_SOURCE_DP_C,
+	INTEL_PIPE_CRC_SOURCE_DP_D,
+	INTEL_PIPE_CRC_SOURCE_AUTO,
+	INTEL_PIPE_CRC_SOURCE_MAX,
+};
+
+enum drrs_refresh_rate {
+	DRRS_REFRESH_RATE_HIGH,
+	DRRS_REFRESH_RATE_LOW,
+};
+
+#define INTEL_PIPE_CRC_ENTRIES_NR	128
+struct intel_pipe_crc {
+	spinlock_t lock;
+	int skipped;
+	enum intel_pipe_crc_source source;
+};
+
+struct intel_crtc {
+	struct drm_crtc base;
+	enum pipe pipe;
+	/*
+	 * Whether the crtc and the connected output pipeline is active. Implies
+	 * that crtc->enabled is set, i.e. the current mode configuration has
+	 * some outputs connected to this crtc.
+	 */
+	bool active;
+	u8 plane_ids_mask;
+
+	/* I915_MODE_FLAG_* */
+	u8 mode_flags;
+
+	u16 vmax_vblank_start;
+
+	struct intel_display_power_domain_set enabled_power_domains;
+	struct intel_overlay *overlay;
+
+	struct intel_crtc_state *config;
+
+	/* Access to these should be protected by dev_priv->irq_lock. */
+	bool cpu_fifo_underrun_disabled;
+	bool pch_fifo_underrun_disabled;
+
+	/* per-pipe watermark state */
+	struct {
+		/* watermarks currently being used  */
+		union {
+			struct intel_pipe_wm ilk;
+			struct vlv_wm_state vlv;
+			struct g4x_wm_state g4x;
+		} active;
+	} wm;
+
+	struct {
+		struct mutex mutex;
+		struct delayed_work work;
+		enum drrs_refresh_rate refresh_rate;
+		unsigned int frontbuffer_bits;
+		unsigned int busy_frontbuffer_bits;
+		enum transcoder cpu_transcoder;
+		struct intel_link_m_n m_n, m2_n2;
+	} drrs;
+
+	int scanline_offset;
+
+	struct {
+		unsigned start_vbl_count;
+		ktime_t start_vbl_time;
+		int min_vbl, max_vbl;
+		int scanline_start;
+#ifdef CONFIG_DRM_I915_DEBUG_VBLANK_EVADE
+		struct {
+			u64 min;
+			u64 max;
+			u64 sum;
+			unsigned int over;
+			unsigned int times[17]; /* [1us, 16ms] */
+		} vbl;
+#endif
+	} debug;
+
+	/* scalers available on this crtc */
+	int num_scalers;
+
+	/* for loading single buffered registers during vblank */
+	struct pm_qos_request vblank_pm_qos;
+
+#ifdef CONFIG_DEBUG_FS
+	struct intel_pipe_crc pipe_crc;
+#endif
+};
+
+struct intel_plane {
+	struct drm_plane base;
+	enum i9xx_plane_id i9xx_plane;
+	enum plane_id id;
+	enum pipe pipe;
+	bool need_async_flip_disable_wa;
+	u32 frontbuffer_bit;
+
+	struct {
+		u32 base, cntl, size;
+	} cursor;
+
+	struct intel_fbc *fbc;
+
+	/*
+	 * NOTE: Do not place new plane state fields here (e.g., when adding
+	 * new plane properties).  New runtime state should now be placed in
+	 * the intel_plane_state structure and accessed via plane_state.
+	 */
+
+	int (*min_width)(const struct drm_framebuffer *fb,
+			 int color_plane,
+			 unsigned int rotation);
+	int (*max_width)(const struct drm_framebuffer *fb,
+			 int color_plane,
+			 unsigned int rotation);
+	int (*max_height)(const struct drm_framebuffer *fb,
+			  int color_plane,
+			  unsigned int rotation);
+	unsigned int (*max_stride)(struct intel_plane *plane,
+				   u32 pixel_format, u64 modifier,
+				   unsigned int rotation);
+	/* Write all non-self arming plane registers */
+	void (*update_noarm)(struct intel_plane *plane,
+			     const struct intel_crtc_state *crtc_state,
+			     const struct intel_plane_state *plane_state);
+	/* Write all self-arming plane registers */
+	void (*update_arm)(struct intel_plane *plane,
+			   const struct intel_crtc_state *crtc_state,
+			   const struct intel_plane_state *plane_state);
+	/* Disable the plane, must arm */
+	void (*disable_arm)(struct intel_plane *plane,
+			    const struct intel_crtc_state *crtc_state);
+	bool (*get_hw_state)(struct intel_plane *plane, enum pipe *pipe);
+	int (*check_plane)(struct intel_crtc_state *crtc_state,
+			   struct intel_plane_state *plane_state);
+	int (*min_cdclk)(const struct intel_crtc_state *crtc_state,
+			 const struct intel_plane_state *plane_state);
+	void (*async_flip)(struct intel_plane *plane,
+			   const struct intel_crtc_state *crtc_state,
+			   const struct intel_plane_state *plane_state,
+			   bool async_flip);
+	void (*enable_flip_done)(struct intel_plane *plane);
+	void (*disable_flip_done)(struct intel_plane *plane);
+};
+
+struct intel_watermark_params {
+	u16 fifo_size;
+	u16 max_wm;
+	u8 default_wm;
+	u8 guard_size;
+	u8 cacheline_size;
+};
+
+struct cxsr_latency {
+	bool is_desktop : 1;
+	bool is_ddr3 : 1;
+	u16 fsb_freq;
+	u16 mem_freq;
+	u16 display_sr;
+	u16 display_hpll_disable;
+	u16 cursor_sr;
+	u16 cursor_hpll_disable;
+};
+
+#define to_intel_atomic_state(x) container_of(x, struct intel_atomic_state, base)
+#define to_intel_crtc(x) container_of(x, struct intel_crtc, base)
+#define to_intel_crtc_state(x) container_of(x, struct intel_crtc_state, uapi)
+#define to_intel_connector(x) container_of(x, struct intel_connector, base)
+#define to_intel_encoder(x) container_of(x, struct intel_encoder, base)
+#define to_intel_framebuffer(x) container_of(x, struct intel_framebuffer, base)
+#define to_intel_plane(x) container_of(x, struct intel_plane, base)
+#define to_intel_plane_state(x) container_of(x, struct intel_plane_state, uapi)
+#define intel_fb_obj(x) ((x) ? to_intel_bo((x)->obj[0]) : NULL)
+
+struct intel_hdmi {
+	i915_reg_t hdmi_reg;
+	int ddc_bus;
+	struct {
+		enum drm_dp_dual_mode_type type;
+		int max_tmds_clock;
+	} dp_dual_mode;
+	bool has_hdmi_sink;
+	bool has_audio;
+	struct intel_connector *attached_connector;
+	struct cec_notifier *cec_notifier;
+};
+
+struct intel_dp_mst_encoder;
+
+struct intel_dp_compliance_data {
+	unsigned long edid;
+	u8 video_pattern;
+	u16 hdisplay, vdisplay;
+	u8 bpc;
+	struct drm_dp_phy_test_params phytest;
+};
+
+struct intel_dp_compliance {
+	unsigned long test_type;
+	struct intel_dp_compliance_data test_data;
+	bool test_active;
+	int test_link_rate;
+	u8 test_lane_count;
+};
+
+struct intel_dp_pcon_frl {
+	bool is_trained;
+	int trained_rate_gbps;
+};
+
+struct intel_pps {
+	int panel_power_up_delay;
+	int panel_power_down_delay;
+	int panel_power_cycle_delay;
+	int backlight_on_delay;
+	int backlight_off_delay;
+	struct delayed_work panel_vdd_work;
+	bool want_panel_vdd;
+	bool initializing;
+	unsigned long last_power_on;
+	unsigned long last_backlight_off;
+	ktime_t panel_power_off_time;
+	intel_wakeref_t vdd_wakeref;
+
+	/*
+	 * Pipe whose power sequencer is currently locked into
+	 * this port. Only relevant on VLV/CHV.
+	 */
+	enum pipe pps_pipe;
+	/*
+	 * Pipe currently driving the port. Used for preventing
+	 * the use of the PPS for any pipe currentrly driving
+	 * external DP as that will mess things up on VLV.
+	 */
+	enum pipe active_pipe;
+	/*
+	 * Set if the sequencer may be reset due to a power transition,
+	 * requiring a reinitialization. Only relevant on BXT.
+	 */
+	bool pps_reset;
+	struct edp_power_seq pps_delays;
+	struct edp_power_seq bios_pps_delays;
+};
+
+struct intel_psr {
+	/* Mutex for PSR state of the transcoder */
+	struct mutex lock;
+
+#define I915_PSR_DEBUG_MODE_MASK	0x0f
+#define I915_PSR_DEBUG_DEFAULT		0x00
+#define I915_PSR_DEBUG_DISABLE		0x01
+#define I915_PSR_DEBUG_ENABLE		0x02
+#define I915_PSR_DEBUG_FORCE_PSR1	0x03
+#define I915_PSR_DEBUG_ENABLE_SEL_FETCH	0x4
+#define I915_PSR_DEBUG_IRQ		0x10
+
+	u32 debug;
+	bool sink_support;
+	bool source_support;
+	bool enabled;
+	bool paused;
+	enum pipe pipe;
+	enum transcoder transcoder;
+	bool active;
+	struct work_struct work;
+	unsigned int busy_frontbuffer_bits;
+	bool sink_psr2_support;
+	bool link_standby;
+	bool colorimetry_support;
+	bool psr2_enabled;
+	bool psr2_sel_fetch_enabled;
+	bool psr2_sel_fetch_cff_enabled;
+	bool req_psr2_sdp_prior_scanline;
+	u8 sink_sync_latency;
+	u8 io_wake_lines;
+	u8 fast_wake_lines;
+	ktime_t last_entry_attempt;
+	ktime_t last_exit;
+	bool sink_not_reliable;
+	bool irq_aux_error;
+	u16 su_w_granularity;
+	u16 su_y_granularity;
+	u32 dc3co_exitline;
+	u32 dc3co_exit_delay;
+	struct delayed_work dc3co_work;
+};
+
+struct intel_dp {
+	i915_reg_t output_reg;
+	u32 DP;
+	int link_rate;
+	u8 lane_count;
+	u8 sink_count;
+	bool link_trained;
+	bool has_hdmi_sink;
+	bool has_audio;
+	bool reset_link_params;
+	bool use_max_params;
+	u8 dpcd[DP_RECEIVER_CAP_SIZE];
+	u8 psr_dpcd[EDP_PSR_RECEIVER_CAP_SIZE];
+	u8 downstream_ports[DP_MAX_DOWNSTREAM_PORTS];
+	u8 edp_dpcd[EDP_DISPLAY_CTL_CAP_SIZE];
+	u8 dsc_dpcd[DP_DSC_RECEIVER_CAP_SIZE];
+	u8 lttpr_common_caps[DP_LTTPR_COMMON_CAP_SIZE];
+	u8 lttpr_phy_caps[DP_MAX_LTTPR_COUNT][DP_LTTPR_PHY_CAP_SIZE];
+	u8 fec_capable;
+	u8 pcon_dsc_dpcd[DP_PCON_DSC_ENCODER_CAP_SIZE];
+	/* source rates */
+	int num_source_rates;
+	const int *source_rates;
+	/* sink rates as reported by DP_MAX_LINK_RATE/DP_SUPPORTED_LINK_RATES */
+	int num_sink_rates;
+	int sink_rates[DP_MAX_SUPPORTED_RATES];
+	bool use_rate_select;
+	/* Max sink lane count as reported by DP_MAX_LANE_COUNT */
+	int max_sink_lane_count;
+	/* intersection of source and sink rates */
+	int num_common_rates;
+	int common_rates[DP_MAX_SUPPORTED_RATES];
+	/* Max lane count for the current link */
+	int max_link_lane_count;
+	/* Max rate for the current link */
+	int max_link_rate;
+	int mso_link_count;
+	int mso_pixel_overlap;
+	/* sink or branch descriptor */
+	struct drm_dp_desc desc;
+	struct drm_dp_aux aux;
+	u32 aux_busy_last_status;
+	u8 train_set[4];
+
+	struct intel_pps pps;
+
+	bool is_mst;
+	int active_mst_links;
+
+	/* connector directly attached - won't be use for modeset in mst world */
+	struct intel_connector *attached_connector;
+
+	/* mst connector list */
+	struct intel_dp_mst_encoder *mst_encoders[I915_MAX_PIPES];
+	struct drm_dp_mst_topology_mgr mst_mgr;
+
+	u32 (*get_aux_clock_divider)(struct intel_dp *dp, int index);
+	/*
+	 * This function returns the value we have to program the AUX_CTL
+	 * register with to kick off an AUX transaction.
+	 */
+	u32 (*get_aux_send_ctl)(struct intel_dp *dp, int send_bytes,
+				u32 aux_clock_divider);
+
+	i915_reg_t (*aux_ch_ctl_reg)(struct intel_dp *dp);
+	i915_reg_t (*aux_ch_data_reg)(struct intel_dp *dp, int index);
+
+	/* This is called before a link training is starterd */
+	void (*prepare_link_retrain)(struct intel_dp *intel_dp,
+				     const struct intel_crtc_state *crtc_state);
+	void (*set_link_train)(struct intel_dp *intel_dp,
+			       const struct intel_crtc_state *crtc_state,
+			       u8 dp_train_pat);
+	void (*set_idle_link_train)(struct intel_dp *intel_dp,
+				    const struct intel_crtc_state *crtc_state);
+
+	u8 (*preemph_max)(struct intel_dp *intel_dp);
+	u8 (*voltage_max)(struct intel_dp *intel_dp,
+			  const struct intel_crtc_state *crtc_state);
+
+	/* Displayport compliance testing */
+	struct intel_dp_compliance compliance;
+
+	/* Downstream facing port caps */
+	struct {
+		int min_tmds_clock, max_tmds_clock;
+		int max_dotclock;
+		int pcon_max_frl_bw;
+		u8 max_bpc;
+		bool ycbcr_444_to_420;
+		bool rgb_to_ycbcr;
+	} dfp;
+
+	/* To control wakeup latency, e.g. for irq-driven dp aux transfers. */
+	struct pm_qos_request pm_qos;
+
+	/* Display stream compression testing */
+	bool force_dsc_en;
+	int force_dsc_bpc;
+
+	bool hobl_failed;
+	bool hobl_active;
+
+	struct intel_dp_pcon_frl frl;
+
+	struct intel_psr psr;
+
+	/* When we last wrote the OUI for eDP */
+	unsigned long last_oui_write;
+};
+
+enum lspcon_vendor {
+	LSPCON_VENDOR_MCA,
+	LSPCON_VENDOR_PARADE
+};
+
+struct intel_lspcon {
+	bool active;
+	bool hdr_supported;
+	enum drm_lspcon_mode mode;
+	enum lspcon_vendor vendor;
+};
+
+struct intel_digital_port {
+	struct intel_encoder base;
+	u32 saved_port_bits;
+	struct intel_dp dp;
+	struct intel_hdmi hdmi;
+	struct intel_lspcon lspcon;
+	enum irqreturn (*hpd_pulse)(struct intel_digital_port *, bool);
+	bool release_cl2_override;
+	u8 max_lanes;
+	/* Used for DP and ICL+ TypeC/DP and TypeC/HDMI ports. */
+	enum aux_ch aux_ch;
+	enum intel_display_power_domain ddi_io_power_domain;
+	intel_wakeref_t ddi_io_wakeref;
+	intel_wakeref_t aux_wakeref;
+
+	struct mutex tc_lock;	/* protects the TypeC port mode */
+	intel_wakeref_t tc_lock_wakeref;
+	enum intel_display_power_domain tc_lock_power_domain;
+	struct delayed_work tc_disconnect_phy_work;
+	int tc_link_refcount;
+	bool tc_legacy_port:1;
+	char tc_port_name[8];
+	enum tc_port_mode tc_mode;
+	enum tc_port_mode tc_init_mode;
+	enum phy_fia tc_phy_fia;
+	u8 tc_phy_fia_idx;
+
+	/* protects num_hdcp_streams reference count, hdcp_port_data and hdcp_auth_status */
+	struct mutex hdcp_mutex;
+	/* the number of pipes using HDCP signalling out of this port */
+	unsigned int num_hdcp_streams;
+	/* port HDCP auth status */
+	bool hdcp_auth_status;
+	/* HDCP port data need to pass to security f/w */
+	struct hdcp_port_data hdcp_port_data;
+	/* Whether the MST topology supports HDCP Type 1 Content */
+	bool hdcp_mst_type1_capable;
+
+	void (*write_infoframe)(struct intel_encoder *encoder,
+				const struct intel_crtc_state *crtc_state,
+				unsigned int type,
+				const void *frame, ssize_t len);
+	void (*read_infoframe)(struct intel_encoder *encoder,
+			       const struct intel_crtc_state *crtc_state,
+			       unsigned int type,
+			       void *frame, ssize_t len);
+	void (*set_infoframes)(struct intel_encoder *encoder,
+			       bool enable,
+			       const struct intel_crtc_state *crtc_state,
+			       const struct drm_connector_state *conn_state);
+	u32 (*infoframes_enabled)(struct intel_encoder *encoder,
+				  const struct intel_crtc_state *pipe_config);
+	bool (*connected)(struct intel_encoder *encoder);
+};
+
+struct intel_dp_mst_encoder {
+	struct intel_encoder base;
+	enum pipe pipe;
+	struct intel_digital_port *primary;
+	struct intel_connector *connector;
+};
+
+static inline enum dpio_channel
+vlv_dig_port_to_channel(struct intel_digital_port *dig_port)
+{
+	switch (dig_port->base.port) {
+	default:
+		MISSING_CASE(dig_port->base.port);
+		fallthrough;
+	case PORT_B:
+	case PORT_D:
+		return DPIO_CH0;
+	case PORT_C:
+		return DPIO_CH1;
+	}
+}
+
+static inline enum dpio_phy
+vlv_dig_port_to_phy(struct intel_digital_port *dig_port)
+{
+	switch (dig_port->base.port) {
+	default:
+		MISSING_CASE(dig_port->base.port);
+		fallthrough;
+	case PORT_B:
+	case PORT_C:
+		return DPIO_PHY0;
+	case PORT_D:
+		return DPIO_PHY1;
+	}
+}
+
+static inline enum dpio_channel
+vlv_pipe_to_channel(enum pipe pipe)
+{
+	switch (pipe) {
+	default:
+		MISSING_CASE(pipe);
+		fallthrough;
+	case PIPE_A:
+	case PIPE_C:
+		return DPIO_CH0;
+	case PIPE_B:
+		return DPIO_CH1;
+	}
+}
+
+struct intel_load_detect_pipe {
+	struct drm_atomic_state *restore_state;
+};
+
+static inline struct intel_encoder *
+intel_attached_encoder(struct intel_connector *connector)
+{
+	return connector->encoder;
+}
+
+static inline bool intel_encoder_is_dig_port(struct intel_encoder *encoder)
+{
+	switch (encoder->type) {
+	case INTEL_OUTPUT_DDI:
+	case INTEL_OUTPUT_DP:
+	case INTEL_OUTPUT_EDP:
+	case INTEL_OUTPUT_HDMI:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static inline bool intel_encoder_is_mst(struct intel_encoder *encoder)
+{
+	return encoder->type == INTEL_OUTPUT_DP_MST;
+}
+
+static inline struct intel_dp_mst_encoder *
+enc_to_mst(struct intel_encoder *encoder)
+{
+	return container_of(&encoder->base, struct intel_dp_mst_encoder,
+			    base.base);
+}
+
+static inline struct intel_digital_port *
+enc_to_dig_port(struct intel_encoder *encoder)
+{
+	struct intel_encoder *intel_encoder = encoder;
+
+	if (intel_encoder_is_dig_port(intel_encoder))
+		return container_of(&encoder->base, struct intel_digital_port,
+				    base.base);
+	else if (intel_encoder_is_mst(intel_encoder))
+		return enc_to_mst(encoder)->primary;
+	else
+		return NULL;
+}
+
+static inline struct intel_digital_port *
+intel_attached_dig_port(struct intel_connector *connector)
+{
+	return enc_to_dig_port(intel_attached_encoder(connector));
+}
+
+static inline struct intel_hdmi *
+enc_to_intel_hdmi(struct intel_encoder *encoder)
+{
+	return &enc_to_dig_port(encoder)->hdmi;
+}
+
+static inline struct intel_hdmi *
+intel_attached_hdmi(struct intel_connector *connector)
+{
+	return enc_to_intel_hdmi(intel_attached_encoder(connector));
+}
+
+static inline struct intel_dp *enc_to_intel_dp(struct intel_encoder *encoder)
+{
+	return &enc_to_dig_port(encoder)->dp;
+}
+
+static inline struct intel_dp *intel_attached_dp(struct intel_connector *connector)
+{
+	return enc_to_intel_dp(intel_attached_encoder(connector));
+}
+
+static inline bool intel_encoder_is_dp(struct intel_encoder *encoder)
+{
+	switch (encoder->type) {
+	case INTEL_OUTPUT_DP:
+	case INTEL_OUTPUT_EDP:
+		return true;
+	case INTEL_OUTPUT_DDI:
+		/* Skip pure HDMI/DVI DDI encoders */
+		return i915_mmio_reg_valid(enc_to_intel_dp(encoder)->output_reg);
+	default:
+		return false;
+	}
+}
+
+static inline struct intel_lspcon *
+enc_to_intel_lspcon(struct intel_encoder *encoder)
+{
+	return &enc_to_dig_port(encoder)->lspcon;
+}
+
+static inline struct intel_digital_port *
+dp_to_dig_port(struct intel_dp *intel_dp)
+{
+	return container_of(intel_dp, struct intel_digital_port, dp);
+}
+
+static inline struct intel_lspcon *
+dp_to_lspcon(struct intel_dp *intel_dp)
+{
+	return &dp_to_dig_port(intel_dp)->lspcon;
+}
+
+#define dp_to_i915(__intel_dp) to_i915(dp_to_dig_port(__intel_dp)->base.base.dev)
+
+#define CAN_PSR(intel_dp) ((intel_dp)->psr.sink_support && \
+			   (intel_dp)->psr.source_support)
+
+static inline bool intel_encoder_can_psr(struct intel_encoder *encoder)
+{
+	if (!intel_encoder_is_dp(encoder))
+		return false;
+
+	return CAN_PSR(enc_to_intel_dp(encoder));
+}
+
+static inline struct intel_digital_port *
+hdmi_to_dig_port(struct intel_hdmi *intel_hdmi)
+{
+	return container_of(intel_hdmi, struct intel_digital_port, hdmi);
+}
+
+static inline struct intel_plane_state *
+intel_atomic_get_plane_state(struct intel_atomic_state *state,
+				 struct intel_plane *plane)
+{
+	struct drm_plane_state *ret =
+		drm_atomic_get_plane_state(&state->base, &plane->base);
+
+	if (IS_ERR(ret))
+		return ERR_CAST(ret);
+
+	return to_intel_plane_state(ret);
+}
+
+static inline struct intel_plane_state *
+intel_atomic_get_old_plane_state(struct intel_atomic_state *state,
+				 struct intel_plane *plane)
+{
+	return to_intel_plane_state(drm_atomic_get_old_plane_state(&state->base,
+								   &plane->base));
+}
+
+static inline struct intel_plane_state *
+intel_atomic_get_new_plane_state(struct intel_atomic_state *state,
+				 struct intel_plane *plane)
+{
+	return to_intel_plane_state(drm_atomic_get_new_plane_state(&state->base,
+								   &plane->base));
+}
+
+static inline struct intel_crtc_state *
+intel_atomic_get_old_crtc_state(struct intel_atomic_state *state,
+				struct intel_crtc *crtc)
+{
+	return to_intel_crtc_state(drm_atomic_get_old_crtc_state(&state->base,
+								 &crtc->base));
+}
+
+static inline struct intel_crtc_state *
+intel_atomic_get_new_crtc_state(struct intel_atomic_state *state,
+				struct intel_crtc *crtc)
+{
+	return to_intel_crtc_state(drm_atomic_get_new_crtc_state(&state->base,
+								 &crtc->base));
+}
+
+static inline struct intel_digital_connector_state *
+intel_atomic_get_new_connector_state(struct intel_atomic_state *state,
+				     struct intel_connector *connector)
+{
+	return to_intel_digital_connector_state(
+			drm_atomic_get_new_connector_state(&state->base,
+			&connector->base));
+}
+
+static inline struct intel_digital_connector_state *
+intel_atomic_get_old_connector_state(struct intel_atomic_state *state,
+				     struct intel_connector *connector)
+{
+	return to_intel_digital_connector_state(
+			drm_atomic_get_old_connector_state(&state->base,
+			&connector->base));
+}
+
+/* intel_display.c */
+static inline bool
+intel_crtc_has_type(const struct intel_crtc_state *crtc_state,
+		    enum intel_output_type type)
+{
+	return crtc_state->output_types & (1 << type);
+}
+static inline bool
+intel_crtc_has_dp_encoder(const struct intel_crtc_state *crtc_state)
+{
+	return crtc_state->output_types &
+		((1 << INTEL_OUTPUT_DP) |
+		 (1 << INTEL_OUTPUT_DP_MST) |
+		 (1 << INTEL_OUTPUT_EDP));
+}
+
+static inline bool
+intel_crtc_needs_modeset(const struct intel_crtc_state *crtc_state)
+{
+	return drm_atomic_crtc_needs_modeset(&crtc_state->uapi);
+}
+
+static inline u32 intel_plane_ggtt_offset(const struct intel_plane_state *plane_state)
+{
+	return i915_ggtt_offset(plane_state->ggtt_vma);
+}
+
+static inline struct intel_frontbuffer *
+to_intel_frontbuffer(struct drm_framebuffer *fb)
+{
+	return fb ? to_intel_framebuffer(fb)->frontbuffer : NULL;
+}
+
+#endif /*  __INTEL_DISPLAY_TYPES_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_dkl_phy.c b/drivers/gpu/drm/i915/display/intel_dkl_phy.c
new file mode 100644
index 000000000..710b030c7
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dkl_phy.c
@@ -0,0 +1,109 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#include "i915_drv.h"
+#include "i915_reg.h"
+
+#include "intel_de.h"
+#include "intel_display.h"
+#include "intel_dkl_phy.h"
+
+static void
+dkl_phy_set_hip_idx(struct drm_i915_private *i915, i915_reg_t reg, int idx)
+{
+	enum tc_port tc_port = DKL_REG_TC_PORT(reg);
+
+	drm_WARN_ON(&i915->drm, tc_port < TC_PORT_1 || tc_port >= I915_MAX_TC_PORTS);
+
+	intel_de_write(i915,
+		       HIP_INDEX_REG(tc_port),
+		       HIP_INDEX_VAL(tc_port, idx));
+}
+
+/**
+ * intel_dkl_phy_read - read a Dekel PHY register
+ * @i915: i915 device instance
+ * @reg: Dekel PHY register
+ * @ln: lane instance of @reg
+ *
+ * Read the @reg Dekel PHY register.
+ *
+ * Returns the read value.
+ */
+u32
+intel_dkl_phy_read(struct drm_i915_private *i915, i915_reg_t reg, int ln)
+{
+	u32 val;
+
+	spin_lock(&i915->display.dkl.phy_lock);
+
+	dkl_phy_set_hip_idx(i915, reg, ln);
+	val = intel_de_read(i915, reg);
+
+	spin_unlock(&i915->display.dkl.phy_lock);
+
+	return val;
+}
+
+/**
+ * intel_dkl_phy_write - write a Dekel PHY register
+ * @i915: i915 device instance
+ * @reg: Dekel PHY register
+ * @ln: lane instance of @reg
+ * @val: value to write
+ *
+ * Write @val to the @reg Dekel PHY register.
+ */
+void
+intel_dkl_phy_write(struct drm_i915_private *i915, i915_reg_t reg, int ln, u32 val)
+{
+	spin_lock(&i915->display.dkl.phy_lock);
+
+	dkl_phy_set_hip_idx(i915, reg, ln);
+	intel_de_write(i915, reg, val);
+
+	spin_unlock(&i915->display.dkl.phy_lock);
+}
+
+/**
+ * intel_dkl_phy_rmw - read-modify-write a Dekel PHY register
+ * @i915: i915 device instance
+ * @reg: Dekel PHY register
+ * @ln: lane instance of @reg
+ * @clear: mask to clear
+ * @set: mask to set
+ *
+ * Read the @reg Dekel PHY register, clearing then setting the @clear/@set bits in it, and writing
+ * this value back to the register if the value differs from the read one.
+ */
+void
+intel_dkl_phy_rmw(struct drm_i915_private *i915, i915_reg_t reg, int ln, u32 clear, u32 set)
+{
+	spin_lock(&i915->display.dkl.phy_lock);
+
+	dkl_phy_set_hip_idx(i915, reg, ln);
+	intel_de_rmw(i915, reg, clear, set);
+
+	spin_unlock(&i915->display.dkl.phy_lock);
+}
+
+/**
+ * intel_dkl_phy_posting_read - do a posting read from a Dekel PHY register
+ * @i915: i915 device instance
+ * @reg: Dekel PHY register
+ * @ln: lane instance of @reg
+ *
+ * Read the @reg Dekel PHY register without returning the read value.
+ */
+void
+intel_dkl_phy_posting_read(struct drm_i915_private *i915, i915_reg_t reg, int ln)
+{
+	spin_lock(&i915->display.dkl.phy_lock);
+
+	dkl_phy_set_hip_idx(i915, reg, ln);
+	intel_de_posting_read(i915, reg);
+
+	spin_unlock(&i915->display.dkl.phy_lock);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_dkl_phy.h b/drivers/gpu/drm/i915/display/intel_dkl_phy.h
new file mode 100644
index 000000000..260ad121a
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dkl_phy.h
@@ -0,0 +1,24 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#ifndef __INTEL_DKL_PHY_H__
+#define __INTEL_DKL_PHY_H__
+
+#include <linux/types.h>
+
+#include "i915_reg_defs.h"
+
+struct drm_i915_private;
+
+u32
+intel_dkl_phy_read(struct drm_i915_private *i915, i915_reg_t reg, int ln);
+void
+intel_dkl_phy_write(struct drm_i915_private *i915, i915_reg_t reg, int ln, u32 val);
+void
+intel_dkl_phy_rmw(struct drm_i915_private *i915, i915_reg_t reg, int ln, u32 clear, u32 set);
+void
+intel_dkl_phy_posting_read(struct drm_i915_private *i915, i915_reg_t reg, int ln);
+
+#endif /* __INTEL_DKL_PHY_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_dmc.c b/drivers/gpu/drm/i915/display/intel_dmc.c
new file mode 100644
index 000000000..e52ecc073
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dmc.c
@@ -0,0 +1,1132 @@
+/*
+ * Copyright © 2014 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ */
+
+#include <linux/firmware.h>
+
+#include "i915_drv.h"
+#include "i915_reg.h"
+#include "intel_de.h"
+#include "intel_dmc.h"
+#include "intel_dmc_regs.h"
+
+/**
+ * DOC: DMC Firmware Support
+ *
+ * From gen9 onwards we have newly added DMC (Display microcontroller) in display
+ * engine to save and restore the state of display engine when it enter into
+ * low-power state and comes back to normal.
+ */
+
+#define DMC_VERSION(major, minor)	((major) << 16 | (minor))
+#define DMC_VERSION_MAJOR(version)	((version) >> 16)
+#define DMC_VERSION_MINOR(version)	((version) & 0xffff)
+
+#define DMC_PATH(platform, major, minor) \
+	"i915/"				 \
+	__stringify(platform) "_dmc_ver" \
+	__stringify(major) "_"		 \
+	__stringify(minor) ".bin"
+
+#define DISPLAY_VER13_DMC_MAX_FW_SIZE	0x20000
+
+#define DISPLAY_VER12_DMC_MAX_FW_SIZE	ICL_DMC_MAX_FW_SIZE
+
+#define DG2_DMC_PATH			DMC_PATH(dg2, 2, 07)
+#define DG2_DMC_VERSION_REQUIRED	DMC_VERSION(2, 07)
+MODULE_FIRMWARE(DG2_DMC_PATH);
+
+#define ADLP_DMC_PATH			DMC_PATH(adlp, 2, 16)
+#define ADLP_DMC_VERSION_REQUIRED	DMC_VERSION(2, 16)
+MODULE_FIRMWARE(ADLP_DMC_PATH);
+
+#define ADLS_DMC_PATH			DMC_PATH(adls, 2, 01)
+#define ADLS_DMC_VERSION_REQUIRED	DMC_VERSION(2, 1)
+MODULE_FIRMWARE(ADLS_DMC_PATH);
+
+#define DG1_DMC_PATH			DMC_PATH(dg1, 2, 02)
+#define DG1_DMC_VERSION_REQUIRED	DMC_VERSION(2, 2)
+MODULE_FIRMWARE(DG1_DMC_PATH);
+
+#define RKL_DMC_PATH			DMC_PATH(rkl, 2, 03)
+#define RKL_DMC_VERSION_REQUIRED	DMC_VERSION(2, 3)
+MODULE_FIRMWARE(RKL_DMC_PATH);
+
+#define TGL_DMC_PATH			DMC_PATH(tgl, 2, 12)
+#define TGL_DMC_VERSION_REQUIRED	DMC_VERSION(2, 12)
+MODULE_FIRMWARE(TGL_DMC_PATH);
+
+#define ICL_DMC_PATH			DMC_PATH(icl, 1, 09)
+#define ICL_DMC_VERSION_REQUIRED	DMC_VERSION(1, 9)
+#define ICL_DMC_MAX_FW_SIZE		0x6000
+MODULE_FIRMWARE(ICL_DMC_PATH);
+
+#define GLK_DMC_PATH			DMC_PATH(glk, 1, 04)
+#define GLK_DMC_VERSION_REQUIRED	DMC_VERSION(1, 4)
+#define GLK_DMC_MAX_FW_SIZE		0x4000
+MODULE_FIRMWARE(GLK_DMC_PATH);
+
+#define KBL_DMC_PATH			DMC_PATH(kbl, 1, 04)
+#define KBL_DMC_VERSION_REQUIRED	DMC_VERSION(1, 4)
+#define KBL_DMC_MAX_FW_SIZE		BXT_DMC_MAX_FW_SIZE
+MODULE_FIRMWARE(KBL_DMC_PATH);
+
+#define SKL_DMC_PATH			DMC_PATH(skl, 1, 27)
+#define SKL_DMC_VERSION_REQUIRED	DMC_VERSION(1, 27)
+#define SKL_DMC_MAX_FW_SIZE		BXT_DMC_MAX_FW_SIZE
+MODULE_FIRMWARE(SKL_DMC_PATH);
+
+#define BXT_DMC_PATH			DMC_PATH(bxt, 1, 07)
+#define BXT_DMC_VERSION_REQUIRED	DMC_VERSION(1, 7)
+#define BXT_DMC_MAX_FW_SIZE		0x3000
+MODULE_FIRMWARE(BXT_DMC_PATH);
+
+#define DMC_DEFAULT_FW_OFFSET		0xFFFFFFFF
+#define PACKAGE_MAX_FW_INFO_ENTRIES	20
+#define PACKAGE_V2_MAX_FW_INFO_ENTRIES	32
+#define DMC_V1_MAX_MMIO_COUNT		8
+#define DMC_V3_MAX_MMIO_COUNT		20
+#define DMC_V1_MMIO_START_RANGE		0x80000
+
+struct intel_css_header {
+	/* 0x09 for DMC */
+	u32 module_type;
+
+	/* Includes the DMC specific header in dwords */
+	u32 header_len;
+
+	/* always value would be 0x10000 */
+	u32 header_ver;
+
+	/* Not used */
+	u32 module_id;
+
+	/* Not used */
+	u32 module_vendor;
+
+	/* in YYYYMMDD format */
+	u32 date;
+
+	/* Size in dwords (CSS_Headerlen + PackageHeaderLen + dmc FWsLen)/4 */
+	u32 size;
+
+	/* Not used */
+	u32 key_size;
+
+	/* Not used */
+	u32 modulus_size;
+
+	/* Not used */
+	u32 exponent_size;
+
+	/* Not used */
+	u32 reserved1[12];
+
+	/* Major Minor */
+	u32 version;
+
+	/* Not used */
+	u32 reserved2[8];
+
+	/* Not used */
+	u32 kernel_header_info;
+} __packed;
+
+struct intel_fw_info {
+	u8 reserved1;
+
+	/* reserved on package_header version 1, must be 0 on version 2 */
+	u8 dmc_id;
+
+	/* Stepping (A, B, C, ..., *). * is a wildcard */
+	char stepping;
+
+	/* Sub-stepping (0, 1, ..., *). * is a wildcard */
+	char substepping;
+
+	u32 offset;
+	u32 reserved2;
+} __packed;
+
+struct intel_package_header {
+	/* DMC container header length in dwords */
+	u8 header_len;
+
+	/* 0x01, 0x02 */
+	u8 header_ver;
+
+	u8 reserved[10];
+
+	/* Number of valid entries in the FWInfo array below */
+	u32 num_entries;
+} __packed;
+
+struct intel_dmc_header_base {
+	/* always value would be 0x40403E3E */
+	u32 signature;
+
+	/* DMC binary header length */
+	u8 header_len;
+
+	/* 0x01 */
+	u8 header_ver;
+
+	/* Reserved */
+	u16 dmcc_ver;
+
+	/* Major, Minor */
+	u32 project;
+
+	/* Firmware program size (excluding header) in dwords */
+	u32 fw_size;
+
+	/* Major Minor version */
+	u32 fw_version;
+} __packed;
+
+struct intel_dmc_header_v1 {
+	struct intel_dmc_header_base base;
+
+	/* Number of valid MMIO cycles present. */
+	u32 mmio_count;
+
+	/* MMIO address */
+	u32 mmioaddr[DMC_V1_MAX_MMIO_COUNT];
+
+	/* MMIO data */
+	u32 mmiodata[DMC_V1_MAX_MMIO_COUNT];
+
+	/* FW filename  */
+	char dfile[32];
+
+	u32 reserved1[2];
+} __packed;
+
+struct intel_dmc_header_v3 {
+	struct intel_dmc_header_base base;
+
+	/* DMC RAM start MMIO address */
+	u32 start_mmioaddr;
+
+	u32 reserved[9];
+
+	/* FW filename */
+	char dfile[32];
+
+	/* Number of valid MMIO cycles present. */
+	u32 mmio_count;
+
+	/* MMIO address */
+	u32 mmioaddr[DMC_V3_MAX_MMIO_COUNT];
+
+	/* MMIO data */
+	u32 mmiodata[DMC_V3_MAX_MMIO_COUNT];
+} __packed;
+
+struct stepping_info {
+	char stepping;
+	char substepping;
+};
+
+static bool has_dmc_id_fw(struct drm_i915_private *i915, int dmc_id)
+{
+	return i915->display.dmc.dmc_info[dmc_id].payload;
+}
+
+bool intel_dmc_has_payload(struct drm_i915_private *i915)
+{
+	return has_dmc_id_fw(i915, DMC_FW_MAIN);
+}
+
+static const struct stepping_info *
+intel_get_stepping_info(struct drm_i915_private *i915,
+			struct stepping_info *si)
+{
+	const char *step_name = intel_step_name(RUNTIME_INFO(i915)->step.display_step);
+
+	si->stepping = step_name[0];
+	si->substepping = step_name[1];
+	return si;
+}
+
+static void gen9_set_dc_state_debugmask(struct drm_i915_private *dev_priv)
+{
+	/* The below bit doesn't need to be cleared ever afterwards */
+	intel_de_rmw(dev_priv, DC_STATE_DEBUG, 0,
+		     DC_STATE_DEBUG_MASK_CORES | DC_STATE_DEBUG_MASK_MEMORY_UP);
+	intel_de_posting_read(dev_priv, DC_STATE_DEBUG);
+}
+
+static void disable_event_handler(struct drm_i915_private *i915,
+				  i915_reg_t ctl_reg, i915_reg_t htp_reg)
+{
+	intel_de_write(i915, ctl_reg,
+		       REG_FIELD_PREP(DMC_EVT_CTL_TYPE_MASK,
+				      DMC_EVT_CTL_TYPE_EDGE_0_1) |
+		       REG_FIELD_PREP(DMC_EVT_CTL_EVENT_ID_MASK,
+				      DMC_EVT_CTL_EVENT_ID_FALSE));
+	intel_de_write(i915, htp_reg, 0);
+}
+
+static void
+disable_flip_queue_event(struct drm_i915_private *i915,
+			 i915_reg_t ctl_reg, i915_reg_t htp_reg)
+{
+	u32 event_ctl;
+	u32 event_htp;
+
+	event_ctl = intel_de_read(i915, ctl_reg);
+	event_htp = intel_de_read(i915, htp_reg);
+	if (event_ctl != (DMC_EVT_CTL_ENABLE |
+			  DMC_EVT_CTL_RECURRING |
+			  REG_FIELD_PREP(DMC_EVT_CTL_TYPE_MASK,
+					 DMC_EVT_CTL_TYPE_EDGE_0_1) |
+			  REG_FIELD_PREP(DMC_EVT_CTL_EVENT_ID_MASK,
+					 DMC_EVT_CTL_EVENT_ID_CLK_MSEC)) ||
+	    !event_htp) {
+		drm_dbg_kms(&i915->drm,
+			    "Unexpected DMC event configuration (control %08x htp %08x)\n",
+			    event_ctl, event_htp);
+		return;
+	}
+
+	disable_event_handler(i915, ctl_reg, htp_reg);
+}
+
+static bool
+get_flip_queue_event_regs(struct drm_i915_private *i915, int dmc_id,
+			  i915_reg_t *ctl_reg, i915_reg_t *htp_reg)
+{
+	switch (dmc_id) {
+	case DMC_FW_MAIN:
+		if (DISPLAY_VER(i915) == 12) {
+			*ctl_reg = DMC_EVT_CTL(i915, dmc_id, 3);
+			*htp_reg = DMC_EVT_HTP(i915, dmc_id, 3);
+
+			return true;
+		}
+		break;
+	case DMC_FW_PIPEA ... DMC_FW_PIPED:
+		if (IS_DG2(i915)) {
+			*ctl_reg = DMC_EVT_CTL(i915, dmc_id, 2);
+			*htp_reg = DMC_EVT_HTP(i915, dmc_id, 2);
+
+			return true;
+		}
+		break;
+	}
+
+	return false;
+}
+
+static void
+disable_all_flip_queue_events(struct drm_i915_private *i915)
+{
+	int dmc_id;
+
+	/* TODO: check if the following applies to all D13+ platforms. */
+	if (!IS_DG2(i915) && !IS_TIGERLAKE(i915))
+		return;
+
+	for (dmc_id = 0; dmc_id < DMC_FW_MAX; dmc_id++) {
+		i915_reg_t ctl_reg;
+		i915_reg_t htp_reg;
+
+		if (!has_dmc_id_fw(i915, dmc_id))
+			continue;
+
+		if (!get_flip_queue_event_regs(i915, dmc_id, &ctl_reg, &htp_reg))
+			continue;
+
+		disable_flip_queue_event(i915, ctl_reg, htp_reg);
+	}
+}
+
+static void disable_all_event_handlers(struct drm_i915_private *i915)
+{
+	int id;
+
+	/* TODO: disable the event handlers on pre-GEN12 platforms as well */
+	if (DISPLAY_VER(i915) < 12)
+		return;
+
+	for (id = DMC_FW_MAIN; id < DMC_FW_MAX; id++) {
+		int handler;
+
+		if (!has_dmc_id_fw(i915, id))
+			continue;
+
+		for (handler = 0; handler < DMC_EVENT_HANDLER_COUNT_GEN12; handler++)
+			disable_event_handler(i915,
+					      DMC_EVT_CTL(i915, id, handler),
+					      DMC_EVT_HTP(i915, id, handler));
+	}
+}
+
+static void pipedmc_clock_gating_wa(struct drm_i915_private *i915, bool enable)
+{
+	enum pipe pipe;
+
+	if (DISPLAY_VER(i915) != 13)
+		return;
+
+	/*
+	 * Wa_16015201720:adl-p,dg2
+	 * The WA requires clock gating to be disabled all the time
+	 * for pipe A and B.
+	 * For pipe C and D clock gating needs to be disabled only
+	 * during initializing the firmware.
+	 */
+	if (enable)
+		for (pipe = PIPE_A; pipe <= PIPE_D; pipe++)
+			intel_de_rmw(i915, CLKGATE_DIS_PSL_EXT(pipe),
+				     0, PIPEDMC_GATING_DIS);
+	else
+		for (pipe = PIPE_C; pipe <= PIPE_D; pipe++)
+			intel_de_rmw(i915, CLKGATE_DIS_PSL_EXT(pipe),
+				     PIPEDMC_GATING_DIS, 0);
+}
+
+/**
+ * intel_dmc_load_program() - write the firmware from memory to register.
+ * @dev_priv: i915 drm device.
+ *
+ * DMC firmware is read from a .bin file and kept in internal memory one time.
+ * Everytime display comes back from low power state this function is called to
+ * copy the firmware from internal memory to registers.
+ */
+void intel_dmc_load_program(struct drm_i915_private *dev_priv)
+{
+	struct intel_dmc *dmc = &dev_priv->display.dmc;
+	u32 id, i;
+
+	if (!intel_dmc_has_payload(dev_priv))
+		return;
+
+	pipedmc_clock_gating_wa(dev_priv, true);
+
+	disable_all_event_handlers(dev_priv);
+
+	assert_rpm_wakelock_held(&dev_priv->runtime_pm);
+
+	preempt_disable();
+
+	for (id = 0; id < DMC_FW_MAX; id++) {
+		for (i = 0; i < dmc->dmc_info[id].dmc_fw_size; i++) {
+			intel_uncore_write_fw(&dev_priv->uncore,
+					      DMC_PROGRAM(dmc->dmc_info[id].start_mmioaddr, i),
+					      dmc->dmc_info[id].payload[i]);
+		}
+	}
+
+	preempt_enable();
+
+	for (id = 0; id < DMC_FW_MAX; id++) {
+		for (i = 0; i < dmc->dmc_info[id].mmio_count; i++) {
+			intel_de_write(dev_priv, dmc->dmc_info[id].mmioaddr[i],
+				       dmc->dmc_info[id].mmiodata[i]);
+		}
+	}
+
+	dev_priv->display.dmc.dc_state = 0;
+
+	gen9_set_dc_state_debugmask(dev_priv);
+
+	/*
+	 * Flip queue events need to be disabled before enabling DC5/6.
+	 * i915 doesn't use the flip queue feature, so disable it already
+	 * here.
+	 */
+	disable_all_flip_queue_events(dev_priv);
+
+	pipedmc_clock_gating_wa(dev_priv, false);
+}
+
+/**
+ * intel_dmc_disable_program() - disable the firmware
+ * @i915: i915 drm device
+ *
+ * Disable all event handlers in the firmware, making sure the firmware is
+ * inactive after the display is uninitialized.
+ */
+void intel_dmc_disable_program(struct drm_i915_private *i915)
+{
+	if (!intel_dmc_has_payload(i915))
+		return;
+
+	pipedmc_clock_gating_wa(i915, true);
+	disable_all_event_handlers(i915);
+	pipedmc_clock_gating_wa(i915, false);
+}
+
+void assert_dmc_loaded(struct drm_i915_private *i915)
+{
+	drm_WARN_ONCE(&i915->drm,
+		      !intel_de_read(i915, DMC_PROGRAM(i915->display.dmc.dmc_info[DMC_FW_MAIN].start_mmioaddr, 0)),
+		      "DMC program storage start is NULL\n");
+	drm_WARN_ONCE(&i915->drm, !intel_de_read(i915, DMC_SSP_BASE),
+		      "DMC SSP Base Not fine\n");
+	drm_WARN_ONCE(&i915->drm, !intel_de_read(i915, DMC_HTP_SKL),
+		      "DMC HTP Not fine\n");
+}
+
+static bool fw_info_matches_stepping(const struct intel_fw_info *fw_info,
+				     const struct stepping_info *si)
+{
+	if ((fw_info->substepping == '*' && si->stepping == fw_info->stepping) ||
+	    (si->stepping == fw_info->stepping && si->substepping == fw_info->substepping) ||
+	    /*
+	     * If we don't find a more specific one from above two checks, we
+	     * then check for the generic one to be sure to work even with
+	     * "broken firmware"
+	     */
+	    (si->stepping == '*' && si->substepping == fw_info->substepping) ||
+	    (fw_info->stepping == '*' && fw_info->substepping == '*'))
+		return true;
+
+	return false;
+}
+
+/*
+ * Search fw_info table for dmc_offset to find firmware binary: num_entries is
+ * already sanitized.
+ */
+static void dmc_set_fw_offset(struct intel_dmc *dmc,
+			      const struct intel_fw_info *fw_info,
+			      unsigned int num_entries,
+			      const struct stepping_info *si,
+			      u8 package_ver)
+{
+	unsigned int i, id;
+
+	struct drm_i915_private *i915 = container_of(dmc, typeof(*i915), display.dmc);
+
+	for (i = 0; i < num_entries; i++) {
+		id = package_ver <= 1 ? DMC_FW_MAIN : fw_info[i].dmc_id;
+
+		if (id >= DMC_FW_MAX) {
+			drm_dbg(&i915->drm, "Unsupported firmware id: %u\n", id);
+			continue;
+		}
+
+		/* More specific versions come first, so we don't even have to
+		 * check for the stepping since we already found a previous FW
+		 * for this id.
+		 */
+		if (dmc->dmc_info[id].present)
+			continue;
+
+		if (fw_info_matches_stepping(&fw_info[i], si)) {
+			dmc->dmc_info[id].present = true;
+			dmc->dmc_info[id].dmc_offset = fw_info[i].offset;
+		}
+	}
+}
+
+static bool dmc_mmio_addr_sanity_check(struct intel_dmc *dmc,
+				       const u32 *mmioaddr, u32 mmio_count,
+				       int header_ver, u8 dmc_id)
+{
+	struct drm_i915_private *i915 = container_of(dmc, typeof(*i915), display.dmc);
+	u32 start_range, end_range;
+	int i;
+
+	if (dmc_id >= DMC_FW_MAX) {
+		drm_warn(&i915->drm, "Unsupported firmware id %u\n", dmc_id);
+		return false;
+	}
+
+	if (header_ver == 1) {
+		start_range = DMC_MMIO_START_RANGE;
+		end_range = DMC_MMIO_END_RANGE;
+	} else if (dmc_id == DMC_FW_MAIN) {
+		start_range = TGL_MAIN_MMIO_START;
+		end_range = TGL_MAIN_MMIO_END;
+	} else if (DISPLAY_VER(i915) >= 13) {
+		start_range = ADLP_PIPE_MMIO_START;
+		end_range = ADLP_PIPE_MMIO_END;
+	} else if (DISPLAY_VER(i915) >= 12) {
+		start_range = TGL_PIPE_MMIO_START(dmc_id);
+		end_range = TGL_PIPE_MMIO_END(dmc_id);
+	} else {
+		drm_warn(&i915->drm, "Unknown mmio range for sanity check");
+		return false;
+	}
+
+	for (i = 0; i < mmio_count; i++) {
+		if (mmioaddr[i] < start_range || mmioaddr[i] > end_range)
+			return false;
+	}
+
+	return true;
+}
+
+static u32 parse_dmc_fw_header(struct intel_dmc *dmc,
+			       const struct intel_dmc_header_base *dmc_header,
+			       size_t rem_size, u8 dmc_id)
+{
+	struct drm_i915_private *i915 = container_of(dmc, typeof(*i915), display.dmc);
+	struct dmc_fw_info *dmc_info = &dmc->dmc_info[dmc_id];
+	unsigned int header_len_bytes, dmc_header_size, payload_size, i;
+	const u32 *mmioaddr, *mmiodata;
+	u32 mmio_count, mmio_count_max, start_mmioaddr;
+	u8 *payload;
+
+	BUILD_BUG_ON(ARRAY_SIZE(dmc_info->mmioaddr) < DMC_V3_MAX_MMIO_COUNT ||
+		     ARRAY_SIZE(dmc_info->mmioaddr) < DMC_V1_MAX_MMIO_COUNT);
+
+	/*
+	 * Check if we can access common fields, we will checkc again below
+	 * after we have read the version
+	 */
+	if (rem_size < sizeof(struct intel_dmc_header_base))
+		goto error_truncated;
+
+	/* Cope with small differences between v1 and v3 */
+	if (dmc_header->header_ver == 3) {
+		const struct intel_dmc_header_v3 *v3 =
+			(const struct intel_dmc_header_v3 *)dmc_header;
+
+		if (rem_size < sizeof(struct intel_dmc_header_v3))
+			goto error_truncated;
+
+		mmioaddr = v3->mmioaddr;
+		mmiodata = v3->mmiodata;
+		mmio_count = v3->mmio_count;
+		mmio_count_max = DMC_V3_MAX_MMIO_COUNT;
+		/* header_len is in dwords */
+		header_len_bytes = dmc_header->header_len * 4;
+		start_mmioaddr = v3->start_mmioaddr;
+		dmc_header_size = sizeof(*v3);
+	} else if (dmc_header->header_ver == 1) {
+		const struct intel_dmc_header_v1 *v1 =
+			(const struct intel_dmc_header_v1 *)dmc_header;
+
+		if (rem_size < sizeof(struct intel_dmc_header_v1))
+			goto error_truncated;
+
+		mmioaddr = v1->mmioaddr;
+		mmiodata = v1->mmiodata;
+		mmio_count = v1->mmio_count;
+		mmio_count_max = DMC_V1_MAX_MMIO_COUNT;
+		header_len_bytes = dmc_header->header_len;
+		start_mmioaddr = DMC_V1_MMIO_START_RANGE;
+		dmc_header_size = sizeof(*v1);
+	} else {
+		drm_err(&i915->drm, "Unknown DMC fw header version: %u\n",
+			dmc_header->header_ver);
+		return 0;
+	}
+
+	if (header_len_bytes != dmc_header_size) {
+		drm_err(&i915->drm, "DMC firmware has wrong dmc header length "
+			"(%u bytes)\n", header_len_bytes);
+		return 0;
+	}
+
+	/* Cache the dmc header info. */
+	if (mmio_count > mmio_count_max) {
+		drm_err(&i915->drm, "DMC firmware has wrong mmio count %u\n", mmio_count);
+		return 0;
+	}
+
+	if (!dmc_mmio_addr_sanity_check(dmc, mmioaddr, mmio_count,
+					dmc_header->header_ver, dmc_id)) {
+		drm_err(&i915->drm, "DMC firmware has Wrong MMIO Addresses\n");
+		return 0;
+	}
+
+	for (i = 0; i < mmio_count; i++) {
+		dmc_info->mmioaddr[i] = _MMIO(mmioaddr[i]);
+		dmc_info->mmiodata[i] = mmiodata[i];
+	}
+	dmc_info->mmio_count = mmio_count;
+	dmc_info->start_mmioaddr = start_mmioaddr;
+
+	rem_size -= header_len_bytes;
+
+	/* fw_size is in dwords, so multiplied by 4 to convert into bytes. */
+	payload_size = dmc_header->fw_size * 4;
+	if (rem_size < payload_size)
+		goto error_truncated;
+
+	if (payload_size > dmc->max_fw_size) {
+		drm_err(&i915->drm, "DMC FW too big (%u bytes)\n", payload_size);
+		return 0;
+	}
+	dmc_info->dmc_fw_size = dmc_header->fw_size;
+
+	dmc_info->payload = kmalloc(payload_size, GFP_KERNEL);
+	if (!dmc_info->payload)
+		return 0;
+
+	payload = (u8 *)(dmc_header) + header_len_bytes;
+	memcpy(dmc_info->payload, payload, payload_size);
+
+	return header_len_bytes + payload_size;
+
+error_truncated:
+	drm_err(&i915->drm, "Truncated DMC firmware, refusing.\n");
+	return 0;
+}
+
+static u32
+parse_dmc_fw_package(struct intel_dmc *dmc,
+		     const struct intel_package_header *package_header,
+		     const struct stepping_info *si,
+		     size_t rem_size)
+{
+	struct drm_i915_private *i915 = container_of(dmc, typeof(*i915), display.dmc);
+	u32 package_size = sizeof(struct intel_package_header);
+	u32 num_entries, max_entries;
+	const struct intel_fw_info *fw_info;
+
+	if (rem_size < package_size)
+		goto error_truncated;
+
+	if (package_header->header_ver == 1) {
+		max_entries = PACKAGE_MAX_FW_INFO_ENTRIES;
+	} else if (package_header->header_ver == 2) {
+		max_entries = PACKAGE_V2_MAX_FW_INFO_ENTRIES;
+	} else {
+		drm_err(&i915->drm, "DMC firmware has unknown header version %u\n",
+			package_header->header_ver);
+		return 0;
+	}
+
+	/*
+	 * We should always have space for max_entries,
+	 * even if not all are used
+	 */
+	package_size += max_entries * sizeof(struct intel_fw_info);
+	if (rem_size < package_size)
+		goto error_truncated;
+
+	if (package_header->header_len * 4 != package_size) {
+		drm_err(&i915->drm, "DMC firmware has wrong package header length "
+			"(%u bytes)\n", package_size);
+		return 0;
+	}
+
+	num_entries = package_header->num_entries;
+	if (WARN_ON(package_header->num_entries > max_entries))
+		num_entries = max_entries;
+
+	fw_info = (const struct intel_fw_info *)
+		((u8 *)package_header + sizeof(*package_header));
+	dmc_set_fw_offset(dmc, fw_info, num_entries, si,
+			  package_header->header_ver);
+
+	/* dmc_offset is in dwords */
+	return package_size;
+
+error_truncated:
+	drm_err(&i915->drm, "Truncated DMC firmware, refusing.\n");
+	return 0;
+}
+
+/* Return number of bytes parsed or 0 on error */
+static u32 parse_dmc_fw_css(struct intel_dmc *dmc,
+			    struct intel_css_header *css_header,
+			    size_t rem_size)
+{
+	struct drm_i915_private *i915 = container_of(dmc, typeof(*i915), display.dmc);
+
+	if (rem_size < sizeof(struct intel_css_header)) {
+		drm_err(&i915->drm, "Truncated DMC firmware, refusing.\n");
+		return 0;
+	}
+
+	if (sizeof(struct intel_css_header) !=
+	    (css_header->header_len * 4)) {
+		drm_err(&i915->drm, "DMC firmware has wrong CSS header length "
+			"(%u bytes)\n",
+			(css_header->header_len * 4));
+		return 0;
+	}
+
+	if (dmc->required_version &&
+	    css_header->version != dmc->required_version) {
+		drm_info(&i915->drm, "Refusing to load DMC firmware v%u.%u,"
+			 " please use v%u.%u\n",
+			 DMC_VERSION_MAJOR(css_header->version),
+			 DMC_VERSION_MINOR(css_header->version),
+			 DMC_VERSION_MAJOR(dmc->required_version),
+			 DMC_VERSION_MINOR(dmc->required_version));
+		return 0;
+	}
+
+	dmc->version = css_header->version;
+
+	return sizeof(struct intel_css_header);
+}
+
+static void parse_dmc_fw(struct drm_i915_private *dev_priv,
+			 const struct firmware *fw)
+{
+	struct intel_css_header *css_header;
+	struct intel_package_header *package_header;
+	struct intel_dmc_header_base *dmc_header;
+	struct intel_dmc *dmc = &dev_priv->display.dmc;
+	struct stepping_info display_info = { '*', '*'};
+	const struct stepping_info *si = intel_get_stepping_info(dev_priv, &display_info);
+	u32 readcount = 0;
+	u32 r, offset;
+	int id;
+
+	if (!fw)
+		return;
+
+	/* Extract CSS Header information */
+	css_header = (struct intel_css_header *)fw->data;
+	r = parse_dmc_fw_css(dmc, css_header, fw->size);
+	if (!r)
+		return;
+
+	readcount += r;
+
+	/* Extract Package Header information */
+	package_header = (struct intel_package_header *)&fw->data[readcount];
+	r = parse_dmc_fw_package(dmc, package_header, si, fw->size - readcount);
+	if (!r)
+		return;
+
+	readcount += r;
+
+	for (id = 0; id < DMC_FW_MAX; id++) {
+		if (!dev_priv->display.dmc.dmc_info[id].present)
+			continue;
+
+		offset = readcount + dmc->dmc_info[id].dmc_offset * 4;
+		if (offset > fw->size) {
+			drm_err(&dev_priv->drm, "Reading beyond the fw_size\n");
+			continue;
+		}
+
+		dmc_header = (struct intel_dmc_header_base *)&fw->data[offset];
+		parse_dmc_fw_header(dmc, dmc_header, fw->size - offset, id);
+	}
+}
+
+static void intel_dmc_runtime_pm_get(struct drm_i915_private *dev_priv)
+{
+	drm_WARN_ON(&dev_priv->drm, dev_priv->display.dmc.wakeref);
+	dev_priv->display.dmc.wakeref =
+		intel_display_power_get(dev_priv, POWER_DOMAIN_INIT);
+}
+
+static void intel_dmc_runtime_pm_put(struct drm_i915_private *dev_priv)
+{
+	intel_wakeref_t wakeref __maybe_unused =
+		fetch_and_zero(&dev_priv->display.dmc.wakeref);
+
+	intel_display_power_put(dev_priv, POWER_DOMAIN_INIT, wakeref);
+}
+
+static void dmc_load_work_fn(struct work_struct *work)
+{
+	struct drm_i915_private *dev_priv;
+	struct intel_dmc *dmc;
+	const struct firmware *fw = NULL;
+
+	dev_priv = container_of(work, typeof(*dev_priv), display.dmc.work);
+	dmc = &dev_priv->display.dmc;
+
+	request_firmware(&fw, dev_priv->display.dmc.fw_path, dev_priv->drm.dev);
+	parse_dmc_fw(dev_priv, fw);
+
+	if (intel_dmc_has_payload(dev_priv)) {
+		intel_dmc_load_program(dev_priv);
+		intel_dmc_runtime_pm_put(dev_priv);
+
+		drm_info(&dev_priv->drm,
+			 "Finished loading DMC firmware %s (v%u.%u)\n",
+			 dev_priv->display.dmc.fw_path, DMC_VERSION_MAJOR(dmc->version),
+			 DMC_VERSION_MINOR(dmc->version));
+	} else {
+		drm_notice(&dev_priv->drm,
+			   "Failed to load DMC firmware %s."
+			   " Disabling runtime power management.\n",
+			   dmc->fw_path);
+		drm_notice(&dev_priv->drm, "DMC firmware homepage: %s",
+			   INTEL_UC_FIRMWARE_URL);
+	}
+
+	release_firmware(fw);
+}
+
+/**
+ * intel_dmc_ucode_init() - initialize the firmware loading.
+ * @dev_priv: i915 drm device.
+ *
+ * This function is called at the time of loading the display driver to read
+ * firmware from a .bin file and copied into a internal memory.
+ */
+void intel_dmc_ucode_init(struct drm_i915_private *dev_priv)
+{
+	struct intel_dmc *dmc = &dev_priv->display.dmc;
+
+	INIT_WORK(&dev_priv->display.dmc.work, dmc_load_work_fn);
+
+	if (!HAS_DMC(dev_priv))
+		return;
+
+	/*
+	 * Obtain a runtime pm reference, until DMC is loaded, to avoid entering
+	 * runtime-suspend.
+	 *
+	 * On error, we return with the rpm wakeref held to prevent runtime
+	 * suspend as runtime suspend *requires* a working DMC for whatever
+	 * reason.
+	 */
+	intel_dmc_runtime_pm_get(dev_priv);
+
+	if (IS_DG2(dev_priv)) {
+		dmc->fw_path = DG2_DMC_PATH;
+		dmc->required_version = DG2_DMC_VERSION_REQUIRED;
+		dmc->max_fw_size = DISPLAY_VER13_DMC_MAX_FW_SIZE;
+	} else if (IS_ALDERLAKE_P(dev_priv)) {
+		dmc->fw_path = ADLP_DMC_PATH;
+		dmc->required_version = ADLP_DMC_VERSION_REQUIRED;
+		dmc->max_fw_size = DISPLAY_VER13_DMC_MAX_FW_SIZE;
+	} else if (IS_ALDERLAKE_S(dev_priv)) {
+		dmc->fw_path = ADLS_DMC_PATH;
+		dmc->required_version = ADLS_DMC_VERSION_REQUIRED;
+		dmc->max_fw_size = DISPLAY_VER12_DMC_MAX_FW_SIZE;
+	} else if (IS_DG1(dev_priv)) {
+		dmc->fw_path = DG1_DMC_PATH;
+		dmc->required_version = DG1_DMC_VERSION_REQUIRED;
+		dmc->max_fw_size = DISPLAY_VER12_DMC_MAX_FW_SIZE;
+	} else if (IS_ROCKETLAKE(dev_priv)) {
+		dmc->fw_path = RKL_DMC_PATH;
+		dmc->required_version = RKL_DMC_VERSION_REQUIRED;
+		dmc->max_fw_size = DISPLAY_VER12_DMC_MAX_FW_SIZE;
+	} else if (IS_TIGERLAKE(dev_priv)) {
+		dmc->fw_path = TGL_DMC_PATH;
+		dmc->required_version = TGL_DMC_VERSION_REQUIRED;
+		dmc->max_fw_size = DISPLAY_VER12_DMC_MAX_FW_SIZE;
+	} else if (DISPLAY_VER(dev_priv) == 11) {
+		dmc->fw_path = ICL_DMC_PATH;
+		dmc->required_version = ICL_DMC_VERSION_REQUIRED;
+		dmc->max_fw_size = ICL_DMC_MAX_FW_SIZE;
+	} else if (IS_GEMINILAKE(dev_priv)) {
+		dmc->fw_path = GLK_DMC_PATH;
+		dmc->required_version = GLK_DMC_VERSION_REQUIRED;
+		dmc->max_fw_size = GLK_DMC_MAX_FW_SIZE;
+	} else if (IS_KABYLAKE(dev_priv) ||
+		   IS_COFFEELAKE(dev_priv) ||
+		   IS_COMETLAKE(dev_priv)) {
+		dmc->fw_path = KBL_DMC_PATH;
+		dmc->required_version = KBL_DMC_VERSION_REQUIRED;
+		dmc->max_fw_size = KBL_DMC_MAX_FW_SIZE;
+	} else if (IS_SKYLAKE(dev_priv)) {
+		dmc->fw_path = SKL_DMC_PATH;
+		dmc->required_version = SKL_DMC_VERSION_REQUIRED;
+		dmc->max_fw_size = SKL_DMC_MAX_FW_SIZE;
+	} else if (IS_BROXTON(dev_priv)) {
+		dmc->fw_path = BXT_DMC_PATH;
+		dmc->required_version = BXT_DMC_VERSION_REQUIRED;
+		dmc->max_fw_size = BXT_DMC_MAX_FW_SIZE;
+	}
+
+	if (dev_priv->params.dmc_firmware_path) {
+		if (strlen(dev_priv->params.dmc_firmware_path) == 0) {
+			dmc->fw_path = NULL;
+			drm_info(&dev_priv->drm,
+				 "Disabling DMC firmware and runtime PM\n");
+			return;
+		}
+
+		dmc->fw_path = dev_priv->params.dmc_firmware_path;
+		/* Bypass version check for firmware override. */
+		dmc->required_version = 0;
+	}
+
+	if (!dmc->fw_path) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "No known DMC firmware for platform, disabling runtime PM\n");
+		return;
+	}
+
+	drm_dbg_kms(&dev_priv->drm, "Loading %s\n", dmc->fw_path);
+	schedule_work(&dev_priv->display.dmc.work);
+}
+
+/**
+ * intel_dmc_ucode_suspend() - prepare DMC firmware before system suspend
+ * @dev_priv: i915 drm device
+ *
+ * Prepare the DMC firmware before entering system suspend. This includes
+ * flushing pending work items and releasing any resources acquired during
+ * init.
+ */
+void intel_dmc_ucode_suspend(struct drm_i915_private *dev_priv)
+{
+	if (!HAS_DMC(dev_priv))
+		return;
+
+	flush_work(&dev_priv->display.dmc.work);
+
+	/* Drop the reference held in case DMC isn't loaded. */
+	if (!intel_dmc_has_payload(dev_priv))
+		intel_dmc_runtime_pm_put(dev_priv);
+}
+
+/**
+ * intel_dmc_ucode_resume() - init DMC firmware during system resume
+ * @dev_priv: i915 drm device
+ *
+ * Reinitialize the DMC firmware during system resume, reacquiring any
+ * resources released in intel_dmc_ucode_suspend().
+ */
+void intel_dmc_ucode_resume(struct drm_i915_private *dev_priv)
+{
+	if (!HAS_DMC(dev_priv))
+		return;
+
+	/*
+	 * Reacquire the reference to keep RPM disabled in case DMC isn't
+	 * loaded.
+	 */
+	if (!intel_dmc_has_payload(dev_priv))
+		intel_dmc_runtime_pm_get(dev_priv);
+}
+
+/**
+ * intel_dmc_ucode_fini() - unload the DMC firmware.
+ * @dev_priv: i915 drm device.
+ *
+ * Firmmware unloading includes freeing the internal memory and reset the
+ * firmware loading status.
+ */
+void intel_dmc_ucode_fini(struct drm_i915_private *dev_priv)
+{
+	int id;
+
+	if (!HAS_DMC(dev_priv))
+		return;
+
+	intel_dmc_ucode_suspend(dev_priv);
+	drm_WARN_ON(&dev_priv->drm, dev_priv->display.dmc.wakeref);
+
+	for (id = 0; id < DMC_FW_MAX; id++)
+		kfree(dev_priv->display.dmc.dmc_info[id].payload);
+}
+
+void intel_dmc_print_error_state(struct drm_i915_error_state_buf *m,
+				 struct drm_i915_private *i915)
+{
+	struct intel_dmc *dmc = &i915->display.dmc;
+
+	if (!HAS_DMC(i915))
+		return;
+
+	i915_error_printf(m, "DMC loaded: %s\n",
+			  str_yes_no(intel_dmc_has_payload(i915)));
+	i915_error_printf(m, "DMC fw version: %d.%d\n",
+			  DMC_VERSION_MAJOR(dmc->version),
+			  DMC_VERSION_MINOR(dmc->version));
+}
+
+static int intel_dmc_debugfs_status_show(struct seq_file *m, void *unused)
+{
+	struct drm_i915_private *i915 = m->private;
+	intel_wakeref_t wakeref;
+	struct intel_dmc *dmc;
+	i915_reg_t dc5_reg, dc6_reg = INVALID_MMIO_REG;
+
+	if (!HAS_DMC(i915))
+		return -ENODEV;
+
+	dmc = &i915->display.dmc;
+
+	wakeref = intel_runtime_pm_get(&i915->runtime_pm);
+
+	seq_printf(m, "fw loaded: %s\n",
+		   str_yes_no(intel_dmc_has_payload(i915)));
+	seq_printf(m, "path: %s\n", dmc->fw_path);
+	seq_printf(m, "Pipe A fw support: %s\n",
+		   str_yes_no(GRAPHICS_VER(i915) >= 12));
+	seq_printf(m, "Pipe A fw loaded: %s\n",
+		   str_yes_no(dmc->dmc_info[DMC_FW_PIPEA].payload));
+	seq_printf(m, "Pipe B fw support: %s\n",
+		   str_yes_no(IS_ALDERLAKE_P(i915)));
+	seq_printf(m, "Pipe B fw loaded: %s\n",
+		   str_yes_no(dmc->dmc_info[DMC_FW_PIPEB].payload));
+
+	if (!intel_dmc_has_payload(i915))
+		goto out;
+
+	seq_printf(m, "version: %d.%d\n", DMC_VERSION_MAJOR(dmc->version),
+		   DMC_VERSION_MINOR(dmc->version));
+
+	if (DISPLAY_VER(i915) >= 12) {
+		if (IS_DGFX(i915)) {
+			dc5_reg = DG1_DMC_DEBUG_DC5_COUNT;
+		} else {
+			dc5_reg = TGL_DMC_DEBUG_DC5_COUNT;
+			dc6_reg = TGL_DMC_DEBUG_DC6_COUNT;
+		}
+
+		/*
+		 * NOTE: DMC_DEBUG3 is a general purpose reg.
+		 * According to B.Specs:49196 DMC f/w reuses DC5/6 counter
+		 * reg for DC3CO debugging and validation,
+		 * but TGL DMC f/w is using DMC_DEBUG3 reg for DC3CO counter.
+		 */
+		seq_printf(m, "DC3CO count: %d\n",
+			   intel_de_read(i915, IS_DGFX(i915) ?
+					 DG1_DMC_DEBUG3 : TGL_DMC_DEBUG3));
+	} else {
+		dc5_reg = IS_BROXTON(i915) ? BXT_DMC_DC3_DC5_COUNT :
+			SKL_DMC_DC3_DC5_COUNT;
+		if (!IS_GEMINILAKE(i915) && !IS_BROXTON(i915))
+			dc6_reg = SKL_DMC_DC5_DC6_COUNT;
+	}
+
+	seq_printf(m, "DC3 -> DC5 count: %d\n", intel_de_read(i915, dc5_reg));
+	if (i915_mmio_reg_valid(dc6_reg))
+		seq_printf(m, "DC5 -> DC6 count: %d\n",
+			   intel_de_read(i915, dc6_reg));
+
+out:
+	seq_printf(m, "program base: 0x%08x\n",
+		   intel_de_read(i915, DMC_PROGRAM(dmc->dmc_info[DMC_FW_MAIN].start_mmioaddr, 0)));
+	seq_printf(m, "ssp base: 0x%08x\n",
+		   intel_de_read(i915, DMC_SSP_BASE));
+	seq_printf(m, "htp: 0x%08x\n", intel_de_read(i915, DMC_HTP_SKL));
+
+	intel_runtime_pm_put(&i915->runtime_pm, wakeref);
+
+	return 0;
+}
+
+DEFINE_SHOW_ATTRIBUTE(intel_dmc_debugfs_status);
+
+void intel_dmc_debugfs_register(struct drm_i915_private *i915)
+{
+	struct drm_minor *minor = i915->drm.primary;
+
+	debugfs_create_file("i915_dmc_info", 0444, minor->debugfs_root,
+			    i915, &intel_dmc_debugfs_status_fops);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_dmc.h b/drivers/gpu/drm/i915/display/intel_dmc.h
new file mode 100644
index 000000000..67e03315e
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dmc.h
@@ -0,0 +1,61 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_DMC_H__
+#define __INTEL_DMC_H__
+
+#include "i915_reg_defs.h"
+#include "intel_wakeref.h"
+#include <linux/workqueue.h>
+
+struct drm_i915_error_state_buf;
+struct drm_i915_private;
+
+enum {
+	DMC_FW_MAIN = 0,
+	DMC_FW_PIPEA,
+	DMC_FW_PIPEB,
+	DMC_FW_PIPEC,
+	DMC_FW_PIPED,
+	DMC_FW_MAX
+};
+
+struct intel_dmc {
+	struct work_struct work;
+	const char *fw_path;
+	u32 required_version;
+	u32 max_fw_size; /* bytes */
+	u32 version;
+	struct dmc_fw_info {
+		u32 mmio_count;
+		i915_reg_t mmioaddr[20];
+		u32 mmiodata[20];
+		u32 dmc_offset;
+		u32 start_mmioaddr;
+		u32 dmc_fw_size; /*dwords */
+		u32 *payload;
+		bool present;
+	} dmc_info[DMC_FW_MAX];
+
+	u32 dc_state;
+	u32 target_dc_state;
+	u32 allowed_dc_mask;
+	intel_wakeref_t wakeref;
+};
+
+void intel_dmc_ucode_init(struct drm_i915_private *i915);
+void intel_dmc_load_program(struct drm_i915_private *i915);
+void intel_dmc_disable_program(struct drm_i915_private *i915);
+void intel_dmc_ucode_fini(struct drm_i915_private *i915);
+void intel_dmc_ucode_suspend(struct drm_i915_private *i915);
+void intel_dmc_ucode_resume(struct drm_i915_private *i915);
+bool intel_dmc_has_payload(struct drm_i915_private *i915);
+void intel_dmc_debugfs_register(struct drm_i915_private *i915);
+void intel_dmc_print_error_state(struct drm_i915_error_state_buf *m,
+				 struct drm_i915_private *i915);
+
+void assert_dmc_loaded(struct drm_i915_private *i915);
+
+#endif /* __INTEL_DMC_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_dmc_regs.h b/drivers/gpu/drm/i915/display/intel_dmc_regs.h
new file mode 100644
index 000000000..5e5e41644
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dmc_regs.h
@@ -0,0 +1,89 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#ifndef __INTEL_DMC_REGS_H__
+#define __INTEL_DMC_REGS_H__
+
+#include "i915_reg_defs.h"
+
+#define DMC_PROGRAM(addr, i)	_MMIO((addr) + (i) * 4)
+#define DMC_SSP_BASE_ADDR_GEN9	0x00002FC0
+
+#define _ADLP_PIPEDMC_REG_MMIO_BASE_A	0x5f000
+#define _TGL_PIPEDMC_REG_MMIO_BASE_A	0x92000
+
+#define __PIPEDMC_REG_MMIO_BASE(i915, dmc_id) \
+	((DISPLAY_VER(i915) >= 13 ? _ADLP_PIPEDMC_REG_MMIO_BASE_A : \
+				    _TGL_PIPEDMC_REG_MMIO_BASE_A) + \
+	 0x400 * ((dmc_id) - 1))
+
+#define __DMC_REG_MMIO_BASE		0x8f000
+
+#define _DMC_REG_MMIO_BASE(i915, dmc_id) \
+	((dmc_id) == DMC_FW_MAIN ? __DMC_REG_MMIO_BASE : \
+				   __PIPEDMC_REG_MMIO_BASE(i915, dmc_id))
+
+#define _DMC_REG(i915, dmc_id, reg) \
+	((reg) - __DMC_REG_MMIO_BASE + _DMC_REG_MMIO_BASE(i915, dmc_id))
+
+#define DMC_EVENT_HANDLER_COUNT_GEN12	8
+
+#define _DMC_EVT_HTP_0			0x8f004
+
+#define DMC_EVT_HTP(i915, dmc_id, handler) \
+	_MMIO(_DMC_REG(i915, dmc_id, _DMC_EVT_HTP_0) + 4 * (handler))
+
+#define _DMC_EVT_CTL_0			0x8f034
+
+#define DMC_EVT_CTL(i915, dmc_id, handler) \
+	_MMIO(_DMC_REG(i915, dmc_id, _DMC_EVT_CTL_0) + 4 * (handler))
+
+#define DMC_EVT_CTL_ENABLE		REG_BIT(31)
+#define DMC_EVT_CTL_RECURRING		REG_BIT(30)
+#define DMC_EVT_CTL_TYPE_MASK		REG_GENMASK(17, 16)
+#define DMC_EVT_CTL_TYPE_LEVEL_0	0
+#define DMC_EVT_CTL_TYPE_LEVEL_1	1
+#define DMC_EVT_CTL_TYPE_EDGE_1_0	2
+#define DMC_EVT_CTL_TYPE_EDGE_0_1	3
+
+#define DMC_EVT_CTL_EVENT_ID_MASK	REG_GENMASK(15, 8)
+#define DMC_EVT_CTL_EVENT_ID_FALSE	0x01
+/* An event handler scheduled to run at a 1 kHz frequency. */
+#define DMC_EVT_CTL_EVENT_ID_CLK_MSEC	0xbf
+
+#define DMC_HTP_ADDR_SKL	0x00500034
+#define DMC_SSP_BASE		_MMIO(0x8F074)
+#define DMC_HTP_SKL		_MMIO(0x8F004)
+#define DMC_LAST_WRITE		_MMIO(0x8F034)
+#define DMC_LAST_WRITE_VALUE	0xc003b400
+#define DMC_MMIO_START_RANGE	0x80000
+#define DMC_MMIO_END_RANGE     0x8FFFF
+#define DMC_V1_MMIO_START_RANGE		0x80000
+#define TGL_MAIN_MMIO_START		0x8F000
+#define TGL_MAIN_MMIO_END		0x8FFFF
+#define _TGL_PIPEA_MMIO_START		0x92000
+#define _TGL_PIPEA_MMIO_END		0x93FFF
+#define _TGL_PIPEB_MMIO_START		0x96000
+#define _TGL_PIPEB_MMIO_END		0x97FFF
+#define ADLP_PIPE_MMIO_START		0x5F000
+#define ADLP_PIPE_MMIO_END		0x5FFFF
+
+#define TGL_PIPE_MMIO_START(dmc_id)	_PICK_EVEN(((dmc_id) - 1), _TGL_PIPEA_MMIO_START,\
+					      _TGL_PIPEB_MMIO_START)
+
+#define TGL_PIPE_MMIO_END(dmc_id)	_PICK_EVEN(((dmc_id) - 1), _TGL_PIPEA_MMIO_END,\
+					      _TGL_PIPEB_MMIO_END)
+
+#define SKL_DMC_DC3_DC5_COUNT	_MMIO(0x80030)
+#define SKL_DMC_DC5_DC6_COUNT	_MMIO(0x8002C)
+#define BXT_DMC_DC3_DC5_COUNT	_MMIO(0x80038)
+#define TGL_DMC_DEBUG_DC5_COUNT	_MMIO(0x101084)
+#define TGL_DMC_DEBUG_DC6_COUNT	_MMIO(0x101088)
+#define DG1_DMC_DEBUG_DC5_COUNT	_MMIO(0x134154)
+
+#define TGL_DMC_DEBUG3		_MMIO(0x101090)
+#define DG1_DMC_DEBUG3		_MMIO(0x13415c)
+
+#endif /* __INTEL_DMC_REGS_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
new file mode 100644
index 000000000..4699c2110
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -0,0 +1,5475 @@
+/*
+ * Copyright © 2008 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Keith Packard <keithp@keithp.com>
+ *
+ */
+
+#include <linux/export.h>
+#include <linux/i2c.h>
+#include <linux/notifier.h>
+#include <linux/slab.h>
+#include <linux/string_helpers.h>
+#include <linux/timekeeping.h>
+#include <linux/types.h>
+
+#include <asm/byteorder.h>
+
+#include <drm/display/drm_dp_helper.h>
+#include <drm/display/drm_dsc_helper.h>
+#include <drm/display/drm_hdmi_helper.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_probe_helper.h>
+
+#include "g4x_dp.h"
+#include "i915_debugfs.h"
+#include "i915_drv.h"
+#include "intel_atomic.h"
+#include "intel_audio.h"
+#include "intel_backlight.h"
+#include "intel_combo_phy_regs.h"
+#include "intel_connector.h"
+#include "intel_crtc.h"
+#include "intel_ddi.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_dp.h"
+#include "intel_dp_aux.h"
+#include "intel_dp_hdcp.h"
+#include "intel_dp_link_training.h"
+#include "intel_dp_mst.h"
+#include "intel_dpio_phy.h"
+#include "intel_dpll.h"
+#include "intel_fifo_underrun.h"
+#include "intel_hdcp.h"
+#include "intel_hdmi.h"
+#include "intel_hotplug.h"
+#include "intel_lspcon.h"
+#include "intel_lvds.h"
+#include "intel_panel.h"
+#include "intel_pch_display.h"
+#include "intel_pps.h"
+#include "intel_psr.h"
+#include "intel_tc.h"
+#include "intel_vdsc.h"
+#include "intel_vrr.h"
+
+/* DP DSC throughput values used for slice count calculations KPixels/s */
+#define DP_DSC_PEAK_PIXEL_RATE			2720000
+#define DP_DSC_MAX_ENC_THROUGHPUT_0		340000
+#define DP_DSC_MAX_ENC_THROUGHPUT_1		400000
+
+/* DP DSC FEC Overhead factor = 1/(0.972261) */
+#define DP_DSC_FEC_OVERHEAD_FACTOR		972261
+
+/* Compliance test status bits  */
+#define INTEL_DP_RESOLUTION_SHIFT_MASK	0
+#define INTEL_DP_RESOLUTION_PREFERRED	(1 << INTEL_DP_RESOLUTION_SHIFT_MASK)
+#define INTEL_DP_RESOLUTION_STANDARD	(2 << INTEL_DP_RESOLUTION_SHIFT_MASK)
+#define INTEL_DP_RESOLUTION_FAILSAFE	(3 << INTEL_DP_RESOLUTION_SHIFT_MASK)
+
+
+/* Constants for DP DSC configurations */
+static const u8 valid_dsc_bpp[] = {6, 8, 10, 12, 15};
+
+/* With Single pipe configuration, HW is capable of supporting maximum
+ * of 4 slices per line.
+ */
+static const u8 valid_dsc_slicecount[] = {1, 2, 4};
+
+/**
+ * intel_dp_is_edp - is the given port attached to an eDP panel (either CPU or PCH)
+ * @intel_dp: DP struct
+ *
+ * If a CPU or PCH DP output is attached to an eDP panel, this function
+ * will return true, and false otherwise.
+ *
+ * This function is not safe to use prior to encoder type being set.
+ */
+bool intel_dp_is_edp(struct intel_dp *intel_dp)
+{
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+
+	return dig_port->base.type == INTEL_OUTPUT_EDP;
+}
+
+static void intel_dp_unset_edid(struct intel_dp *intel_dp);
+static int intel_dp_dsc_compute_bpp(struct intel_dp *intel_dp, u8 dsc_max_bpc);
+
+/* Is link rate UHBR and thus 128b/132b? */
+bool intel_dp_is_uhbr(const struct intel_crtc_state *crtc_state)
+{
+	return crtc_state->port_clock >= 1000000;
+}
+
+static void intel_dp_set_default_sink_rates(struct intel_dp *intel_dp)
+{
+	intel_dp->sink_rates[0] = 162000;
+	intel_dp->num_sink_rates = 1;
+}
+
+/* update sink rates from dpcd */
+static void intel_dp_set_dpcd_sink_rates(struct intel_dp *intel_dp)
+{
+	static const int dp_rates[] = {
+		162000, 270000, 540000, 810000
+	};
+	int i, max_rate;
+	int max_lttpr_rate;
+
+	if (drm_dp_has_quirk(&intel_dp->desc, DP_DPCD_QUIRK_CAN_DO_MAX_LINK_RATE_3_24_GBPS)) {
+		/* Needed, e.g., for Apple MBP 2017, 15 inch eDP Retina panel */
+		static const int quirk_rates[] = { 162000, 270000, 324000 };
+
+		memcpy(intel_dp->sink_rates, quirk_rates, sizeof(quirk_rates));
+		intel_dp->num_sink_rates = ARRAY_SIZE(quirk_rates);
+
+		return;
+	}
+
+	/*
+	 * Sink rates for 8b/10b.
+	 */
+	max_rate = drm_dp_bw_code_to_link_rate(intel_dp->dpcd[DP_MAX_LINK_RATE]);
+	max_lttpr_rate = drm_dp_lttpr_max_link_rate(intel_dp->lttpr_common_caps);
+	if (max_lttpr_rate)
+		max_rate = min(max_rate, max_lttpr_rate);
+
+	for (i = 0; i < ARRAY_SIZE(dp_rates); i++) {
+		if (dp_rates[i] > max_rate)
+			break;
+		intel_dp->sink_rates[i] = dp_rates[i];
+	}
+
+	/*
+	 * Sink rates for 128b/132b. If set, sink should support all 8b/10b
+	 * rates and 10 Gbps.
+	 */
+	if (intel_dp->dpcd[DP_MAIN_LINK_CHANNEL_CODING] & DP_CAP_ANSI_128B132B) {
+		u8 uhbr_rates = 0;
+
+		BUILD_BUG_ON(ARRAY_SIZE(intel_dp->sink_rates) < ARRAY_SIZE(dp_rates) + 3);
+
+		drm_dp_dpcd_readb(&intel_dp->aux,
+				  DP_128B132B_SUPPORTED_LINK_RATES, &uhbr_rates);
+
+		if (drm_dp_lttpr_count(intel_dp->lttpr_common_caps)) {
+			/* We have a repeater */
+			if (intel_dp->lttpr_common_caps[0] >= 0x20 &&
+			    intel_dp->lttpr_common_caps[DP_MAIN_LINK_CHANNEL_CODING_PHY_REPEATER -
+							DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV] &
+			    DP_PHY_REPEATER_128B132B_SUPPORTED) {
+				/* Repeater supports 128b/132b, valid UHBR rates */
+				uhbr_rates &= intel_dp->lttpr_common_caps[DP_PHY_REPEATER_128B132B_RATES -
+									  DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV];
+			} else {
+				/* Does not support 128b/132b */
+				uhbr_rates = 0;
+			}
+		}
+
+		if (uhbr_rates & DP_UHBR10)
+			intel_dp->sink_rates[i++] = 1000000;
+		if (uhbr_rates & DP_UHBR13_5)
+			intel_dp->sink_rates[i++] = 1350000;
+		if (uhbr_rates & DP_UHBR20)
+			intel_dp->sink_rates[i++] = 2000000;
+	}
+
+	intel_dp->num_sink_rates = i;
+}
+
+static void intel_dp_set_sink_rates(struct intel_dp *intel_dp)
+{
+	struct intel_connector *connector = intel_dp->attached_connector;
+	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
+	struct intel_encoder *encoder = &intel_dig_port->base;
+
+	intel_dp_set_dpcd_sink_rates(intel_dp);
+
+	if (intel_dp->num_sink_rates)
+		return;
+
+	drm_err(&dp_to_i915(intel_dp)->drm,
+		"[CONNECTOR:%d:%s][ENCODER:%d:%s] Invalid DPCD with no link rates, using defaults\n",
+		connector->base.base.id, connector->base.name,
+		encoder->base.base.id, encoder->base.name);
+
+	intel_dp_set_default_sink_rates(intel_dp);
+}
+
+static void intel_dp_set_default_max_sink_lane_count(struct intel_dp *intel_dp)
+{
+	intel_dp->max_sink_lane_count = 1;
+}
+
+static void intel_dp_set_max_sink_lane_count(struct intel_dp *intel_dp)
+{
+	struct intel_connector *connector = intel_dp->attached_connector;
+	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
+	struct intel_encoder *encoder = &intel_dig_port->base;
+
+	intel_dp->max_sink_lane_count = drm_dp_max_lane_count(intel_dp->dpcd);
+
+	switch (intel_dp->max_sink_lane_count) {
+	case 1:
+	case 2:
+	case 4:
+		return;
+	}
+
+	drm_err(&dp_to_i915(intel_dp)->drm,
+		"[CONNECTOR:%d:%s][ENCODER:%d:%s] Invalid DPCD max lane count (%d), using default\n",
+		connector->base.base.id, connector->base.name,
+		encoder->base.base.id, encoder->base.name,
+		intel_dp->max_sink_lane_count);
+
+	intel_dp_set_default_max_sink_lane_count(intel_dp);
+}
+
+/* Get length of rates array potentially limited by max_rate. */
+static int intel_dp_rate_limit_len(const int *rates, int len, int max_rate)
+{
+	int i;
+
+	/* Limit results by potentially reduced max rate */
+	for (i = 0; i < len; i++) {
+		if (rates[len - i - 1] <= max_rate)
+			return len - i;
+	}
+
+	return 0;
+}
+
+/* Get length of common rates array potentially limited by max_rate. */
+static int intel_dp_common_len_rate_limit(const struct intel_dp *intel_dp,
+					  int max_rate)
+{
+	return intel_dp_rate_limit_len(intel_dp->common_rates,
+				       intel_dp->num_common_rates, max_rate);
+}
+
+static int intel_dp_common_rate(struct intel_dp *intel_dp, int index)
+{
+	if (drm_WARN_ON(&dp_to_i915(intel_dp)->drm,
+			index < 0 || index >= intel_dp->num_common_rates))
+		return 162000;
+
+	return intel_dp->common_rates[index];
+}
+
+/* Theoretical max between source and sink */
+static int intel_dp_max_common_rate(struct intel_dp *intel_dp)
+{
+	return intel_dp_common_rate(intel_dp, intel_dp->num_common_rates - 1);
+}
+
+static int intel_dp_max_source_lane_count(struct intel_digital_port *dig_port)
+{
+	int vbt_max_lanes = intel_bios_dp_max_lane_count(&dig_port->base);
+	int max_lanes = dig_port->max_lanes;
+
+	if (vbt_max_lanes)
+		max_lanes = min(max_lanes, vbt_max_lanes);
+
+	return max_lanes;
+}
+
+/* Theoretical max between source and sink */
+static int intel_dp_max_common_lane_count(struct intel_dp *intel_dp)
+{
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	int source_max = intel_dp_max_source_lane_count(dig_port);
+	int sink_max = intel_dp->max_sink_lane_count;
+	int fia_max = intel_tc_port_fia_max_lane_count(dig_port);
+	int lttpr_max = drm_dp_lttpr_max_lane_count(intel_dp->lttpr_common_caps);
+
+	if (lttpr_max)
+		sink_max = min(sink_max, lttpr_max);
+
+	return min3(source_max, sink_max, fia_max);
+}
+
+int intel_dp_max_lane_count(struct intel_dp *intel_dp)
+{
+	switch (intel_dp->max_link_lane_count) {
+	case 1:
+	case 2:
+	case 4:
+		return intel_dp->max_link_lane_count;
+	default:
+		MISSING_CASE(intel_dp->max_link_lane_count);
+		return 1;
+	}
+}
+
+/*
+ * The required data bandwidth for a mode with given pixel clock and bpp. This
+ * is the required net bandwidth independent of the data bandwidth efficiency.
+ */
+int
+intel_dp_link_required(int pixel_clock, int bpp)
+{
+	/* pixel_clock is in kHz, divide bpp by 8 for bit to Byte conversion */
+	return DIV_ROUND_UP(pixel_clock * bpp, 8);
+}
+
+/*
+ * Given a link rate and lanes, get the data bandwidth.
+ *
+ * Data bandwidth is the actual payload rate, which depends on the data
+ * bandwidth efficiency and the link rate.
+ *
+ * For 8b/10b channel encoding, SST and non-FEC, the data bandwidth efficiency
+ * is 80%. For example, for a 1.62 Gbps link, 1.62*10^9 bps * 0.80 * (1/8) =
+ * 162000 kBps. With 8-bit symbols, we have 162000 kHz symbol clock. Just by
+ * coincidence, the port clock in kHz matches the data bandwidth in kBps, and
+ * they equal the link bit rate in Gbps multiplied by 100000. (Note that this no
+ * longer holds for data bandwidth as soon as FEC or MST is taken into account!)
+ *
+ * For 128b/132b channel encoding, the data bandwidth efficiency is 96.71%. For
+ * example, for a 10 Gbps link, 10*10^9 bps * 0.9671 * (1/8) = 1208875
+ * kBps. With 32-bit symbols, we have 312500 kHz symbol clock. The value 1000000
+ * does not match the symbol clock, the port clock (not even if you think in
+ * terms of a byte clock), nor the data bandwidth. It only matches the link bit
+ * rate in units of 10000 bps.
+ */
+int
+intel_dp_max_data_rate(int max_link_rate, int max_lanes)
+{
+	if (max_link_rate >= 1000000) {
+		/*
+		 * UHBR rates always use 128b/132b channel encoding, and have
+		 * 97.71% data bandwidth efficiency. Consider max_link_rate the
+		 * link bit rate in units of 10000 bps.
+		 */
+		int max_link_rate_kbps = max_link_rate * 10;
+
+		max_link_rate_kbps = DIV_ROUND_CLOSEST_ULL(mul_u32_u32(max_link_rate_kbps, 9671), 10000);
+		max_link_rate = max_link_rate_kbps / 8;
+	}
+
+	/*
+	 * Lower than UHBR rates always use 8b/10b channel encoding, and have
+	 * 80% data bandwidth efficiency for SST non-FEC. However, this turns
+	 * out to be a nop by coincidence, and can be skipped:
+	 *
+	 *	int max_link_rate_kbps = max_link_rate * 10;
+	 *	max_link_rate_kbps = DIV_ROUND_CLOSEST_ULL(max_link_rate_kbps * 8, 10);
+	 *	max_link_rate = max_link_rate_kbps / 8;
+	 */
+
+	return max_link_rate * max_lanes;
+}
+
+bool intel_dp_can_bigjoiner(struct intel_dp *intel_dp)
+{
+	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
+	struct intel_encoder *encoder = &intel_dig_port->base;
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+
+	return DISPLAY_VER(dev_priv) >= 12 ||
+		(DISPLAY_VER(dev_priv) == 11 &&
+		 encoder->port != PORT_A);
+}
+
+static int dg2_max_source_rate(struct intel_dp *intel_dp)
+{
+	return intel_dp_is_edp(intel_dp) ? 810000 : 1350000;
+}
+
+static int icl_max_source_rate(struct intel_dp *intel_dp)
+{
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
+	enum phy phy = intel_port_to_phy(dev_priv, dig_port->base.port);
+
+	if (intel_phy_is_combo(dev_priv, phy) && !intel_dp_is_edp(intel_dp))
+		return 540000;
+
+	return 810000;
+}
+
+static int ehl_max_source_rate(struct intel_dp *intel_dp)
+{
+	if (intel_dp_is_edp(intel_dp))
+		return 540000;
+
+	return 810000;
+}
+
+static int vbt_max_link_rate(struct intel_dp *intel_dp)
+{
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+	int max_rate;
+
+	max_rate = intel_bios_dp_max_link_rate(encoder);
+
+	if (intel_dp_is_edp(intel_dp)) {
+		struct intel_connector *connector = intel_dp->attached_connector;
+		int edp_max_rate = connector->panel.vbt.edp.max_link_rate;
+
+		if (max_rate && edp_max_rate)
+			max_rate = min(max_rate, edp_max_rate);
+		else if (edp_max_rate)
+			max_rate = edp_max_rate;
+	}
+
+	return max_rate;
+}
+
+static void
+intel_dp_set_source_rates(struct intel_dp *intel_dp)
+{
+	/* The values must be in increasing order */
+	static const int icl_rates[] = {
+		162000, 216000, 270000, 324000, 432000, 540000, 648000, 810000,
+		1000000, 1350000,
+	};
+	static const int bxt_rates[] = {
+		162000, 216000, 243000, 270000, 324000, 432000, 540000
+	};
+	static const int skl_rates[] = {
+		162000, 216000, 270000, 324000, 432000, 540000
+	};
+	static const int hsw_rates[] = {
+		162000, 270000, 540000
+	};
+	static const int g4x_rates[] = {
+		162000, 270000
+	};
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
+	const int *source_rates;
+	int size, max_rate = 0, vbt_max_rate;
+
+	/* This should only be done once */
+	drm_WARN_ON(&dev_priv->drm,
+		    intel_dp->source_rates || intel_dp->num_source_rates);
+
+	if (DISPLAY_VER(dev_priv) >= 11) {
+		source_rates = icl_rates;
+		size = ARRAY_SIZE(icl_rates);
+		if (IS_DG2(dev_priv))
+			max_rate = dg2_max_source_rate(intel_dp);
+		else if (IS_ALDERLAKE_P(dev_priv) || IS_ALDERLAKE_S(dev_priv) ||
+			 IS_DG1(dev_priv) || IS_ROCKETLAKE(dev_priv))
+			max_rate = 810000;
+		else if (IS_JSL_EHL(dev_priv))
+			max_rate = ehl_max_source_rate(intel_dp);
+		else
+			max_rate = icl_max_source_rate(intel_dp);
+	} else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) {
+		source_rates = bxt_rates;
+		size = ARRAY_SIZE(bxt_rates);
+	} else if (DISPLAY_VER(dev_priv) == 9) {
+		source_rates = skl_rates;
+		size = ARRAY_SIZE(skl_rates);
+	} else if ((IS_HASWELL(dev_priv) && !IS_HSW_ULX(dev_priv)) ||
+		   IS_BROADWELL(dev_priv)) {
+		source_rates = hsw_rates;
+		size = ARRAY_SIZE(hsw_rates);
+	} else {
+		source_rates = g4x_rates;
+		size = ARRAY_SIZE(g4x_rates);
+	}
+
+	vbt_max_rate = vbt_max_link_rate(intel_dp);
+	if (max_rate && vbt_max_rate)
+		max_rate = min(max_rate, vbt_max_rate);
+	else if (vbt_max_rate)
+		max_rate = vbt_max_rate;
+
+	if (max_rate)
+		size = intel_dp_rate_limit_len(source_rates, size, max_rate);
+
+	intel_dp->source_rates = source_rates;
+	intel_dp->num_source_rates = size;
+}
+
+static int intersect_rates(const int *source_rates, int source_len,
+			   const int *sink_rates, int sink_len,
+			   int *common_rates)
+{
+	int i = 0, j = 0, k = 0;
+
+	while (i < source_len && j < sink_len) {
+		if (source_rates[i] == sink_rates[j]) {
+			if (WARN_ON(k >= DP_MAX_SUPPORTED_RATES))
+				return k;
+			common_rates[k] = source_rates[i];
+			++k;
+			++i;
+			++j;
+		} else if (source_rates[i] < sink_rates[j]) {
+			++i;
+		} else {
+			++j;
+		}
+	}
+	return k;
+}
+
+/* return index of rate in rates array, or -1 if not found */
+static int intel_dp_rate_index(const int *rates, int len, int rate)
+{
+	int i;
+
+	for (i = 0; i < len; i++)
+		if (rate == rates[i])
+			return i;
+
+	return -1;
+}
+
+static void intel_dp_set_common_rates(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+
+	drm_WARN_ON(&i915->drm,
+		    !intel_dp->num_source_rates || !intel_dp->num_sink_rates);
+
+	intel_dp->num_common_rates = intersect_rates(intel_dp->source_rates,
+						     intel_dp->num_source_rates,
+						     intel_dp->sink_rates,
+						     intel_dp->num_sink_rates,
+						     intel_dp->common_rates);
+
+	/* Paranoia, there should always be something in common. */
+	if (drm_WARN_ON(&i915->drm, intel_dp->num_common_rates == 0)) {
+		intel_dp->common_rates[0] = 162000;
+		intel_dp->num_common_rates = 1;
+	}
+}
+
+static bool intel_dp_link_params_valid(struct intel_dp *intel_dp, int link_rate,
+				       u8 lane_count)
+{
+	/*
+	 * FIXME: we need to synchronize the current link parameters with
+	 * hardware readout. Currently fast link training doesn't work on
+	 * boot-up.
+	 */
+	if (link_rate == 0 ||
+	    link_rate > intel_dp->max_link_rate)
+		return false;
+
+	if (lane_count == 0 ||
+	    lane_count > intel_dp_max_lane_count(intel_dp))
+		return false;
+
+	return true;
+}
+
+static bool intel_dp_can_link_train_fallback_for_edp(struct intel_dp *intel_dp,
+						     int link_rate,
+						     u8 lane_count)
+{
+	/* FIXME figure out what we actually want here */
+	const struct drm_display_mode *fixed_mode =
+		intel_panel_preferred_fixed_mode(intel_dp->attached_connector);
+	int mode_rate, max_rate;
+
+	mode_rate = intel_dp_link_required(fixed_mode->clock, 18);
+	max_rate = intel_dp_max_data_rate(link_rate, lane_count);
+	if (mode_rate > max_rate)
+		return false;
+
+	return true;
+}
+
+int intel_dp_get_link_train_fallback_values(struct intel_dp *intel_dp,
+					    int link_rate, u8 lane_count)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	int index;
+
+	/*
+	 * TODO: Enable fallback on MST links once MST link compute can handle
+	 * the fallback params.
+	 */
+	if (intel_dp->is_mst) {
+		drm_err(&i915->drm, "Link Training Unsuccessful\n");
+		return -1;
+	}
+
+	if (intel_dp_is_edp(intel_dp) && !intel_dp->use_max_params) {
+		drm_dbg_kms(&i915->drm,
+			    "Retrying Link training for eDP with max parameters\n");
+		intel_dp->use_max_params = true;
+		return 0;
+	}
+
+	index = intel_dp_rate_index(intel_dp->common_rates,
+				    intel_dp->num_common_rates,
+				    link_rate);
+	if (index > 0) {
+		if (intel_dp_is_edp(intel_dp) &&
+		    !intel_dp_can_link_train_fallback_for_edp(intel_dp,
+							      intel_dp_common_rate(intel_dp, index - 1),
+							      lane_count)) {
+			drm_dbg_kms(&i915->drm,
+				    "Retrying Link training for eDP with same parameters\n");
+			return 0;
+		}
+		intel_dp->max_link_rate = intel_dp_common_rate(intel_dp, index - 1);
+		intel_dp->max_link_lane_count = lane_count;
+	} else if (lane_count > 1) {
+		if (intel_dp_is_edp(intel_dp) &&
+		    !intel_dp_can_link_train_fallback_for_edp(intel_dp,
+							      intel_dp_max_common_rate(intel_dp),
+							      lane_count >> 1)) {
+			drm_dbg_kms(&i915->drm,
+				    "Retrying Link training for eDP with same parameters\n");
+			return 0;
+		}
+		intel_dp->max_link_rate = intel_dp_max_common_rate(intel_dp);
+		intel_dp->max_link_lane_count = lane_count >> 1;
+	} else {
+		drm_err(&i915->drm, "Link Training Unsuccessful\n");
+		return -1;
+	}
+
+	return 0;
+}
+
+u32 intel_dp_mode_to_fec_clock(u32 mode_clock)
+{
+	return div_u64(mul_u32_u32(mode_clock, 1000000U),
+		       DP_DSC_FEC_OVERHEAD_FACTOR);
+}
+
+static int
+small_joiner_ram_size_bits(struct drm_i915_private *i915)
+{
+	if (DISPLAY_VER(i915) >= 13)
+		return 17280 * 8;
+	else if (DISPLAY_VER(i915) >= 11)
+		return 7680 * 8;
+	else
+		return 6144 * 8;
+}
+
+static u16 intel_dp_dsc_get_output_bpp(struct drm_i915_private *i915,
+				       u32 link_clock, u32 lane_count,
+				       u32 mode_clock, u32 mode_hdisplay,
+				       bool bigjoiner,
+				       u32 pipe_bpp)
+{
+	u32 bits_per_pixel, max_bpp_small_joiner_ram;
+	int i;
+
+	/*
+	 * Available Link Bandwidth(Kbits/sec) = (NumberOfLanes)*
+	 * (LinkSymbolClock)* 8 * (TimeSlotsPerMTP)
+	 * for SST -> TimeSlotsPerMTP is 1,
+	 * for MST -> TimeSlotsPerMTP has to be calculated
+	 */
+	bits_per_pixel = (link_clock * lane_count * 8) /
+			 intel_dp_mode_to_fec_clock(mode_clock);
+
+	/* Small Joiner Check: output bpp <= joiner RAM (bits) / Horiz. width */
+	max_bpp_small_joiner_ram = small_joiner_ram_size_bits(i915) /
+		mode_hdisplay;
+
+	if (bigjoiner)
+		max_bpp_small_joiner_ram *= 2;
+
+	/*
+	 * Greatest allowed DSC BPP = MIN (output BPP from available Link BW
+	 * check, output bpp from small joiner RAM check)
+	 */
+	bits_per_pixel = min(bits_per_pixel, max_bpp_small_joiner_ram);
+
+	if (bigjoiner) {
+		u32 max_bpp_bigjoiner =
+			i915->display.cdclk.max_cdclk_freq * 48 /
+			intel_dp_mode_to_fec_clock(mode_clock);
+
+		bits_per_pixel = min(bits_per_pixel, max_bpp_bigjoiner);
+	}
+
+	/* Error out if the max bpp is less than smallest allowed valid bpp */
+	if (bits_per_pixel < valid_dsc_bpp[0]) {
+		drm_dbg_kms(&i915->drm, "Unsupported BPP %u, min %u\n",
+			    bits_per_pixel, valid_dsc_bpp[0]);
+		return 0;
+	}
+
+	/* From XE_LPD onwards we support from bpc upto uncompressed bpp-1 BPPs */
+	if (DISPLAY_VER(i915) >= 13) {
+		bits_per_pixel = min(bits_per_pixel, pipe_bpp - 1);
+	} else {
+		/* Find the nearest match in the array of known BPPs from VESA */
+		for (i = 0; i < ARRAY_SIZE(valid_dsc_bpp) - 1; i++) {
+			if (bits_per_pixel < valid_dsc_bpp[i + 1])
+				break;
+		}
+		bits_per_pixel = valid_dsc_bpp[i];
+	}
+
+	/*
+	 * Compressed BPP in U6.4 format so multiply by 16, for Gen 11,
+	 * fractional part is 0
+	 */
+	return bits_per_pixel << 4;
+}
+
+static u8 intel_dp_dsc_get_slice_count(struct intel_dp *intel_dp,
+				       int mode_clock, int mode_hdisplay,
+				       bool bigjoiner)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	u8 min_slice_count, i;
+	int max_slice_width;
+
+	if (mode_clock <= DP_DSC_PEAK_PIXEL_RATE)
+		min_slice_count = DIV_ROUND_UP(mode_clock,
+					       DP_DSC_MAX_ENC_THROUGHPUT_0);
+	else
+		min_slice_count = DIV_ROUND_UP(mode_clock,
+					       DP_DSC_MAX_ENC_THROUGHPUT_1);
+
+	max_slice_width = drm_dp_dsc_sink_max_slice_width(intel_dp->dsc_dpcd);
+	if (max_slice_width < DP_DSC_MIN_SLICE_WIDTH_VALUE) {
+		drm_dbg_kms(&i915->drm,
+			    "Unsupported slice width %d by DP DSC Sink device\n",
+			    max_slice_width);
+		return 0;
+	}
+	/* Also take into account max slice width */
+	min_slice_count = max_t(u8, min_slice_count,
+				DIV_ROUND_UP(mode_hdisplay,
+					     max_slice_width));
+
+	/* Find the closest match to the valid slice count values */
+	for (i = 0; i < ARRAY_SIZE(valid_dsc_slicecount); i++) {
+		u8 test_slice_count = valid_dsc_slicecount[i] << bigjoiner;
+
+		if (test_slice_count >
+		    drm_dp_dsc_sink_max_slice_count(intel_dp->dsc_dpcd, false))
+			break;
+
+		/* big joiner needs small joiner to be enabled */
+		if (bigjoiner && test_slice_count < 4)
+			continue;
+
+		if (min_slice_count <= test_slice_count)
+			return test_slice_count;
+	}
+
+	drm_dbg_kms(&i915->drm, "Unsupported Slice Count %d\n",
+		    min_slice_count);
+	return 0;
+}
+
+static enum intel_output_format
+intel_dp_output_format(struct intel_connector *connector,
+		       bool ycbcr_420_output)
+{
+	struct intel_dp *intel_dp = intel_attached_dp(connector);
+
+	if (!connector->base.ycbcr_420_allowed || !ycbcr_420_output)
+		return INTEL_OUTPUT_FORMAT_RGB;
+
+	if (intel_dp->dfp.rgb_to_ycbcr &&
+	    intel_dp->dfp.ycbcr_444_to_420)
+		return INTEL_OUTPUT_FORMAT_RGB;
+
+	if (intel_dp->dfp.ycbcr_444_to_420)
+		return INTEL_OUTPUT_FORMAT_YCBCR444;
+	else
+		return INTEL_OUTPUT_FORMAT_YCBCR420;
+}
+
+int intel_dp_min_bpp(enum intel_output_format output_format)
+{
+	if (output_format == INTEL_OUTPUT_FORMAT_RGB)
+		return 6 * 3;
+	else
+		return 8 * 3;
+}
+
+static int intel_dp_output_bpp(enum intel_output_format output_format, int bpp)
+{
+	/*
+	 * bpp value was assumed to RGB format. And YCbCr 4:2:0 output
+	 * format of the number of bytes per pixel will be half the number
+	 * of bytes of RGB pixel.
+	 */
+	if (output_format == INTEL_OUTPUT_FORMAT_YCBCR420)
+		bpp /= 2;
+
+	return bpp;
+}
+
+static int
+intel_dp_mode_min_output_bpp(struct intel_connector *connector,
+			     const struct drm_display_mode *mode)
+{
+	const struct drm_display_info *info = &connector->base.display_info;
+	enum intel_output_format output_format =
+		intel_dp_output_format(connector, drm_mode_is_420_only(info, mode));
+
+	return intel_dp_output_bpp(output_format, intel_dp_min_bpp(output_format));
+}
+
+static bool intel_dp_hdisplay_bad(struct drm_i915_private *dev_priv,
+				  int hdisplay)
+{
+	/*
+	 * Older platforms don't like hdisplay==4096 with DP.
+	 *
+	 * On ILK/SNB/IVB the pipe seems to be somewhat running (scanline
+	 * and frame counter increment), but we don't get vblank interrupts,
+	 * and the pipe underruns immediately. The link also doesn't seem
+	 * to get trained properly.
+	 *
+	 * On CHV the vblank interrupts don't seem to disappear but
+	 * otherwise the symptoms are similar.
+	 *
+	 * TODO: confirm the behaviour on HSW+
+	 */
+	return hdisplay == 4096 && !HAS_DDI(dev_priv);
+}
+
+static int intel_dp_max_tmds_clock(struct intel_dp *intel_dp)
+{
+	struct intel_connector *connector = intel_dp->attached_connector;
+	const struct drm_display_info *info = &connector->base.display_info;
+	int max_tmds_clock = intel_dp->dfp.max_tmds_clock;
+
+	/* Only consider the sink's max TMDS clock if we know this is a HDMI DFP */
+	if (max_tmds_clock && info->max_tmds_clock)
+		max_tmds_clock = min(max_tmds_clock, info->max_tmds_clock);
+
+	return max_tmds_clock;
+}
+
+static enum drm_mode_status
+intel_dp_tmds_clock_valid(struct intel_dp *intel_dp,
+			  int clock, int bpc, bool ycbcr420_output,
+			  bool respect_downstream_limits)
+{
+	int tmds_clock, min_tmds_clock, max_tmds_clock;
+
+	if (!respect_downstream_limits)
+		return MODE_OK;
+
+	tmds_clock = intel_hdmi_tmds_clock(clock, bpc, ycbcr420_output);
+
+	min_tmds_clock = intel_dp->dfp.min_tmds_clock;
+	max_tmds_clock = intel_dp_max_tmds_clock(intel_dp);
+
+	if (min_tmds_clock && tmds_clock < min_tmds_clock)
+		return MODE_CLOCK_LOW;
+
+	if (max_tmds_clock && tmds_clock > max_tmds_clock)
+		return MODE_CLOCK_HIGH;
+
+	return MODE_OK;
+}
+
+static enum drm_mode_status
+intel_dp_mode_valid_downstream(struct intel_connector *connector,
+			       const struct drm_display_mode *mode,
+			       int target_clock)
+{
+	struct intel_dp *intel_dp = intel_attached_dp(connector);
+	const struct drm_display_info *info = &connector->base.display_info;
+	enum drm_mode_status status;
+	bool ycbcr_420_only;
+
+	/* If PCON supports FRL MODE, check FRL bandwidth constraints */
+	if (intel_dp->dfp.pcon_max_frl_bw) {
+		int target_bw;
+		int max_frl_bw;
+		int bpp = intel_dp_mode_min_output_bpp(connector, mode);
+
+		target_bw = bpp * target_clock;
+
+		max_frl_bw = intel_dp->dfp.pcon_max_frl_bw;
+
+		/* converting bw from Gbps to Kbps*/
+		max_frl_bw = max_frl_bw * 1000000;
+
+		if (target_bw > max_frl_bw)
+			return MODE_CLOCK_HIGH;
+
+		return MODE_OK;
+	}
+
+	if (intel_dp->dfp.max_dotclock &&
+	    target_clock > intel_dp->dfp.max_dotclock)
+		return MODE_CLOCK_HIGH;
+
+	ycbcr_420_only = drm_mode_is_420_only(info, mode);
+
+	/* Assume 8bpc for the DP++/HDMI/DVI TMDS clock check */
+	status = intel_dp_tmds_clock_valid(intel_dp, target_clock,
+					   8, ycbcr_420_only, true);
+
+	if (status != MODE_OK) {
+		if (ycbcr_420_only ||
+		    !connector->base.ycbcr_420_allowed ||
+		    !drm_mode_is_420_also(info, mode))
+			return status;
+
+		status = intel_dp_tmds_clock_valid(intel_dp, target_clock,
+						   8, true, true);
+		if (status != MODE_OK)
+			return status;
+	}
+
+	return MODE_OK;
+}
+
+static bool intel_dp_need_bigjoiner(struct intel_dp *intel_dp,
+				    int hdisplay, int clock)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+
+	if (!intel_dp_can_bigjoiner(intel_dp))
+		return false;
+
+	return clock > i915->max_dotclk_freq || hdisplay > 5120;
+}
+
+static enum drm_mode_status
+intel_dp_mode_valid(struct drm_connector *_connector,
+		    struct drm_display_mode *mode)
+{
+	struct intel_connector *connector = to_intel_connector(_connector);
+	struct intel_dp *intel_dp = intel_attached_dp(connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	const struct drm_display_mode *fixed_mode;
+	int target_clock = mode->clock;
+	int max_rate, mode_rate, max_lanes, max_link_clock;
+	int max_dotclk = dev_priv->max_dotclk_freq;
+	u16 dsc_max_output_bpp = 0;
+	u8 dsc_slice_count = 0;
+	enum drm_mode_status status;
+	bool dsc = false, bigjoiner = false;
+
+	status = intel_cpu_transcoder_mode_valid(dev_priv, mode);
+	if (status != MODE_OK)
+		return status;
+
+	if (mode->flags & DRM_MODE_FLAG_DBLCLK)
+		return MODE_H_ILLEGAL;
+
+	fixed_mode = intel_panel_fixed_mode(connector, mode);
+	if (intel_dp_is_edp(intel_dp) && fixed_mode) {
+		status = intel_panel_mode_valid(connector, mode);
+		if (status != MODE_OK)
+			return status;
+
+		target_clock = fixed_mode->clock;
+	}
+
+	if (mode->clock < 10000)
+		return MODE_CLOCK_LOW;
+
+	if (intel_dp_need_bigjoiner(intel_dp, mode->hdisplay, target_clock)) {
+		bigjoiner = true;
+		max_dotclk *= 2;
+	}
+	if (target_clock > max_dotclk)
+		return MODE_CLOCK_HIGH;
+
+	max_link_clock = intel_dp_max_link_rate(intel_dp);
+	max_lanes = intel_dp_max_lane_count(intel_dp);
+
+	max_rate = intel_dp_max_data_rate(max_link_clock, max_lanes);
+	mode_rate = intel_dp_link_required(target_clock,
+					   intel_dp_mode_min_output_bpp(connector, mode));
+
+	if (intel_dp_hdisplay_bad(dev_priv, mode->hdisplay))
+		return MODE_H_ILLEGAL;
+
+	/*
+	 * Output bpp is stored in 6.4 format so right shift by 4 to get the
+	 * integer value since we support only integer values of bpp.
+	 */
+	if (DISPLAY_VER(dev_priv) >= 10 &&
+	    drm_dp_sink_supports_dsc(intel_dp->dsc_dpcd)) {
+		/*
+		 * TBD pass the connector BPC,
+		 * for now U8_MAX so that max BPC on that platform would be picked
+		 */
+		int pipe_bpp = intel_dp_dsc_compute_bpp(intel_dp, U8_MAX);
+
+		if (intel_dp_is_edp(intel_dp)) {
+			dsc_max_output_bpp =
+				drm_edp_dsc_sink_output_bpp(intel_dp->dsc_dpcd) >> 4;
+			dsc_slice_count =
+				drm_dp_dsc_sink_max_slice_count(intel_dp->dsc_dpcd,
+								true);
+		} else if (drm_dp_sink_supports_fec(intel_dp->fec_capable)) {
+			dsc_max_output_bpp =
+				intel_dp_dsc_get_output_bpp(dev_priv,
+							    max_link_clock,
+							    max_lanes,
+							    target_clock,
+							    mode->hdisplay,
+							    bigjoiner,
+							    pipe_bpp) >> 4;
+			dsc_slice_count =
+				intel_dp_dsc_get_slice_count(intel_dp,
+							     target_clock,
+							     mode->hdisplay,
+							     bigjoiner);
+		}
+
+		dsc = dsc_max_output_bpp && dsc_slice_count;
+	}
+
+	/*
+	 * Big joiner configuration needs DSC for TGL which is not true for
+	 * XE_LPD where uncompressed joiner is supported.
+	 */
+	if (DISPLAY_VER(dev_priv) < 13 && bigjoiner && !dsc)
+		return MODE_CLOCK_HIGH;
+
+	if (mode_rate > max_rate && !dsc)
+		return MODE_CLOCK_HIGH;
+
+	status = intel_dp_mode_valid_downstream(connector, mode, target_clock);
+	if (status != MODE_OK)
+		return status;
+
+	return intel_mode_valid_max_plane_size(dev_priv, mode, bigjoiner);
+}
+
+bool intel_dp_source_supports_tps3(struct drm_i915_private *i915)
+{
+	return DISPLAY_VER(i915) >= 9 || IS_BROADWELL(i915) || IS_HASWELL(i915);
+}
+
+bool intel_dp_source_supports_tps4(struct drm_i915_private *i915)
+{
+	return DISPLAY_VER(i915) >= 10;
+}
+
+static void snprintf_int_array(char *str, size_t len,
+			       const int *array, int nelem)
+{
+	int i;
+
+	str[0] = '\0';
+
+	for (i = 0; i < nelem; i++) {
+		int r = snprintf(str, len, "%s%d", i ? ", " : "", array[i]);
+		if (r >= len)
+			return;
+		str += r;
+		len -= r;
+	}
+}
+
+static void intel_dp_print_rates(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	char str[128]; /* FIXME: too big for stack? */
+
+	if (!drm_debug_enabled(DRM_UT_KMS))
+		return;
+
+	snprintf_int_array(str, sizeof(str),
+			   intel_dp->source_rates, intel_dp->num_source_rates);
+	drm_dbg_kms(&i915->drm, "source rates: %s\n", str);
+
+	snprintf_int_array(str, sizeof(str),
+			   intel_dp->sink_rates, intel_dp->num_sink_rates);
+	drm_dbg_kms(&i915->drm, "sink rates: %s\n", str);
+
+	snprintf_int_array(str, sizeof(str),
+			   intel_dp->common_rates, intel_dp->num_common_rates);
+	drm_dbg_kms(&i915->drm, "common rates: %s\n", str);
+}
+
+int
+intel_dp_max_link_rate(struct intel_dp *intel_dp)
+{
+	int len;
+
+	len = intel_dp_common_len_rate_limit(intel_dp, intel_dp->max_link_rate);
+
+	return intel_dp_common_rate(intel_dp, len - 1);
+}
+
+int intel_dp_rate_select(struct intel_dp *intel_dp, int rate)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	int i = intel_dp_rate_index(intel_dp->sink_rates,
+				    intel_dp->num_sink_rates, rate);
+
+	if (drm_WARN_ON(&i915->drm, i < 0))
+		i = 0;
+
+	return i;
+}
+
+void intel_dp_compute_rate(struct intel_dp *intel_dp, int port_clock,
+			   u8 *link_bw, u8 *rate_select)
+{
+	/* eDP 1.4 rate select method. */
+	if (intel_dp->use_rate_select) {
+		*link_bw = 0;
+		*rate_select =
+			intel_dp_rate_select(intel_dp, port_clock);
+	} else {
+		*link_bw = drm_dp_link_rate_to_bw_code(port_clock);
+		*rate_select = 0;
+	}
+}
+
+static bool intel_dp_source_supports_fec(struct intel_dp *intel_dp,
+					 const struct intel_crtc_state *pipe_config)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+	/* On TGL, FEC is supported on all Pipes */
+	if (DISPLAY_VER(dev_priv) >= 12)
+		return true;
+
+	if (DISPLAY_VER(dev_priv) == 11 && pipe_config->cpu_transcoder != TRANSCODER_A)
+		return true;
+
+	return false;
+}
+
+static bool intel_dp_supports_fec(struct intel_dp *intel_dp,
+				  const struct intel_crtc_state *pipe_config)
+{
+	return intel_dp_source_supports_fec(intel_dp, pipe_config) &&
+		drm_dp_sink_supports_fec(intel_dp->fec_capable);
+}
+
+static bool intel_dp_supports_dsc(struct intel_dp *intel_dp,
+				  const struct intel_crtc_state *crtc_state)
+{
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP) && !crtc_state->fec_enable)
+		return false;
+
+	return intel_dsc_source_support(crtc_state) &&
+		drm_dp_sink_supports_dsc(intel_dp->dsc_dpcd);
+}
+
+static bool intel_dp_is_ycbcr420(struct intel_dp *intel_dp,
+				 const struct intel_crtc_state *crtc_state)
+{
+	return crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420 ||
+		(crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR444 &&
+		 intel_dp->dfp.ycbcr_444_to_420);
+}
+
+static int intel_dp_hdmi_compute_bpc(struct intel_dp *intel_dp,
+				     const struct intel_crtc_state *crtc_state,
+				     int bpc, bool respect_downstream_limits)
+{
+	bool ycbcr420_output = intel_dp_is_ycbcr420(intel_dp, crtc_state);
+	int clock = crtc_state->hw.adjusted_mode.crtc_clock;
+
+	/*
+	 * Current bpc could already be below 8bpc due to
+	 * FDI bandwidth constraints or other limits.
+	 * HDMI minimum is 8bpc however.
+	 */
+	bpc = max(bpc, 8);
+
+	/*
+	 * We will never exceed downstream TMDS clock limits while
+	 * attempting deep color. If the user insists on forcing an
+	 * out of spec mode they will have to be satisfied with 8bpc.
+	 */
+	if (!respect_downstream_limits)
+		bpc = 8;
+
+	for (; bpc >= 8; bpc -= 2) {
+		if (intel_hdmi_bpc_possible(crtc_state, bpc,
+					    intel_dp->has_hdmi_sink, ycbcr420_output) &&
+		    intel_dp_tmds_clock_valid(intel_dp, clock, bpc, ycbcr420_output,
+					      respect_downstream_limits) == MODE_OK)
+			return bpc;
+	}
+
+	return -EINVAL;
+}
+
+static int intel_dp_max_bpp(struct intel_dp *intel_dp,
+			    const struct intel_crtc_state *crtc_state,
+			    bool respect_downstream_limits)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_connector *intel_connector = intel_dp->attached_connector;
+	int bpp, bpc;
+
+	bpc = crtc_state->pipe_bpp / 3;
+
+	if (intel_dp->dfp.max_bpc)
+		bpc = min_t(int, bpc, intel_dp->dfp.max_bpc);
+
+	if (intel_dp->dfp.min_tmds_clock) {
+		int max_hdmi_bpc;
+
+		max_hdmi_bpc = intel_dp_hdmi_compute_bpc(intel_dp, crtc_state, bpc,
+							 respect_downstream_limits);
+		if (max_hdmi_bpc < 0)
+			return 0;
+
+		bpc = min(bpc, max_hdmi_bpc);
+	}
+
+	bpp = bpc * 3;
+	if (intel_dp_is_edp(intel_dp)) {
+		/* Get bpp from vbt only for panels that dont have bpp in edid */
+		if (intel_connector->base.display_info.bpc == 0 &&
+		    intel_connector->panel.vbt.edp.bpp &&
+		    intel_connector->panel.vbt.edp.bpp < bpp) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "clamping bpp for eDP panel to BIOS-provided %i\n",
+				    intel_connector->panel.vbt.edp.bpp);
+			bpp = intel_connector->panel.vbt.edp.bpp;
+		}
+	}
+
+	return bpp;
+}
+
+/* Adjust link config limits based on compliance test requests. */
+void
+intel_dp_adjust_compliance_config(struct intel_dp *intel_dp,
+				  struct intel_crtc_state *pipe_config,
+				  struct link_config_limits *limits)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+
+	/* For DP Compliance we override the computed bpp for the pipe */
+	if (intel_dp->compliance.test_data.bpc != 0) {
+		int bpp = 3 * intel_dp->compliance.test_data.bpc;
+
+		limits->min_bpp = limits->max_bpp = bpp;
+		pipe_config->dither_force_disable = bpp == 6 * 3;
+
+		drm_dbg_kms(&i915->drm, "Setting pipe_bpp to %d\n", bpp);
+	}
+
+	/* Use values requested by Compliance Test Request */
+	if (intel_dp->compliance.test_type == DP_TEST_LINK_TRAINING) {
+		int index;
+
+		/* Validate the compliance test data since max values
+		 * might have changed due to link train fallback.
+		 */
+		if (intel_dp_link_params_valid(intel_dp, intel_dp->compliance.test_link_rate,
+					       intel_dp->compliance.test_lane_count)) {
+			index = intel_dp_rate_index(intel_dp->common_rates,
+						    intel_dp->num_common_rates,
+						    intel_dp->compliance.test_link_rate);
+			if (index >= 0)
+				limits->min_rate = limits->max_rate =
+					intel_dp->compliance.test_link_rate;
+			limits->min_lane_count = limits->max_lane_count =
+				intel_dp->compliance.test_lane_count;
+		}
+	}
+}
+
+static bool has_seamless_m_n(struct intel_connector *connector)
+{
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+
+	/*
+	 * Seamless M/N reprogramming only implemented
+	 * for BDW+ double buffered M/N registers so far.
+	 */
+	return HAS_DOUBLE_BUFFERED_M_N(i915) &&
+		intel_panel_drrs_type(connector) == DRRS_TYPE_SEAMLESS;
+}
+
+static int intel_dp_mode_clock(const struct intel_crtc_state *crtc_state,
+			       const struct drm_connector_state *conn_state)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	const struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode;
+
+	/* FIXME a bit of a mess wrt clock vs. crtc_clock */
+	if (has_seamless_m_n(connector))
+		return intel_panel_highest_mode(connector, adjusted_mode)->clock;
+	else
+		return adjusted_mode->crtc_clock;
+}
+
+/* Optimize link config in order: max bpp, min clock, min lanes */
+static int
+intel_dp_compute_link_config_wide(struct intel_dp *intel_dp,
+				  struct intel_crtc_state *pipe_config,
+				  const struct drm_connector_state *conn_state,
+				  const struct link_config_limits *limits)
+{
+	int bpp, i, lane_count, clock = intel_dp_mode_clock(pipe_config, conn_state);
+	int mode_rate, link_rate, link_avail;
+
+	for (bpp = limits->max_bpp; bpp >= limits->min_bpp; bpp -= 2 * 3) {
+		int output_bpp = intel_dp_output_bpp(pipe_config->output_format, bpp);
+
+		mode_rate = intel_dp_link_required(clock, output_bpp);
+
+		for (i = 0; i < intel_dp->num_common_rates; i++) {
+			link_rate = intel_dp_common_rate(intel_dp, i);
+			if (link_rate < limits->min_rate ||
+			    link_rate > limits->max_rate)
+				continue;
+
+			for (lane_count = limits->min_lane_count;
+			     lane_count <= limits->max_lane_count;
+			     lane_count <<= 1) {
+				link_avail = intel_dp_max_data_rate(link_rate,
+								    lane_count);
+
+				if (mode_rate <= link_avail) {
+					pipe_config->lane_count = lane_count;
+					pipe_config->pipe_bpp = bpp;
+					pipe_config->port_clock = link_rate;
+
+					return 0;
+				}
+			}
+		}
+	}
+
+	return -EINVAL;
+}
+
+static int intel_dp_dsc_compute_bpp(struct intel_dp *intel_dp, u8 max_req_bpc)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	int i, num_bpc;
+	u8 dsc_bpc[3] = {0};
+	u8 dsc_max_bpc;
+
+	/* Max DSC Input BPC for ICL is 10 and for TGL+ is 12 */
+	if (DISPLAY_VER(i915) >= 12)
+		dsc_max_bpc = min_t(u8, 12, max_req_bpc);
+	else
+		dsc_max_bpc = min_t(u8, 10, max_req_bpc);
+
+	num_bpc = drm_dp_dsc_sink_supported_input_bpcs(intel_dp->dsc_dpcd,
+						       dsc_bpc);
+	for (i = 0; i < num_bpc; i++) {
+		if (dsc_max_bpc >= dsc_bpc[i])
+			return dsc_bpc[i] * 3;
+	}
+
+	return 0;
+}
+
+static int intel_dp_source_dsc_version_minor(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+
+	return DISPLAY_VER(i915) >= 14 ? 2 : 1;
+}
+
+static int intel_dp_sink_dsc_version_minor(struct intel_dp *intel_dp)
+{
+	return (intel_dp->dsc_dpcd[DP_DSC_REV - DP_DSC_SUPPORT] & DP_DSC_MINOR_MASK) >>
+		DP_DSC_MINOR_SHIFT;
+}
+
+static int intel_dp_dsc_compute_params(struct intel_encoder *encoder,
+				       struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config;
+	u8 line_buf_depth;
+	int ret;
+
+	/*
+	 * RC_MODEL_SIZE is currently a constant across all configurations.
+	 *
+	 * FIXME: Look into using sink defined DPCD DP_DSC_RC_BUF_BLK_SIZE and
+	 * DP_DSC_RC_BUF_SIZE for this.
+	 */
+	vdsc_cfg->rc_model_size = DSC_RC_MODEL_SIZE_CONST;
+	vdsc_cfg->pic_height = crtc_state->hw.adjusted_mode.crtc_vdisplay;
+
+	/*
+	 * Slice Height of 8 works for all currently available panels. So start
+	 * with that if pic_height is an integral multiple of 8. Eventually add
+	 * logic to try multiple slice heights.
+	 */
+	if (vdsc_cfg->pic_height % 8 == 0)
+		vdsc_cfg->slice_height = 8;
+	else if (vdsc_cfg->pic_height % 4 == 0)
+		vdsc_cfg->slice_height = 4;
+	else
+		vdsc_cfg->slice_height = 2;
+
+	ret = intel_dsc_compute_params(crtc_state);
+	if (ret)
+		return ret;
+
+	vdsc_cfg->dsc_version_major =
+		(intel_dp->dsc_dpcd[DP_DSC_REV - DP_DSC_SUPPORT] &
+		 DP_DSC_MAJOR_MASK) >> DP_DSC_MAJOR_SHIFT;
+	vdsc_cfg->dsc_version_minor =
+		min(intel_dp_source_dsc_version_minor(intel_dp),
+		    intel_dp_sink_dsc_version_minor(intel_dp));
+
+	vdsc_cfg->convert_rgb = intel_dp->dsc_dpcd[DP_DSC_DEC_COLOR_FORMAT_CAP - DP_DSC_SUPPORT] &
+		DP_DSC_RGB;
+
+	line_buf_depth = drm_dp_dsc_sink_line_buf_depth(intel_dp->dsc_dpcd);
+	if (!line_buf_depth) {
+		drm_dbg_kms(&i915->drm,
+			    "DSC Sink Line Buffer Depth invalid\n");
+		return -EINVAL;
+	}
+
+	if (vdsc_cfg->dsc_version_minor == 2)
+		vdsc_cfg->line_buf_depth = (line_buf_depth == DSC_1_2_MAX_LINEBUF_DEPTH_BITS) ?
+			DSC_1_2_MAX_LINEBUF_DEPTH_VAL : line_buf_depth;
+	else
+		vdsc_cfg->line_buf_depth = (line_buf_depth > DSC_1_1_MAX_LINEBUF_DEPTH_BITS) ?
+			DSC_1_1_MAX_LINEBUF_DEPTH_BITS : line_buf_depth;
+
+	vdsc_cfg->block_pred_enable =
+		intel_dp->dsc_dpcd[DP_DSC_BLK_PREDICTION_SUPPORT - DP_DSC_SUPPORT] &
+		DP_DSC_BLK_PREDICTION_IS_SUPPORTED;
+
+	return drm_dsc_compute_rc_parameters(vdsc_cfg);
+}
+
+static int intel_dp_dsc_compute_config(struct intel_dp *intel_dp,
+				       struct intel_crtc_state *pipe_config,
+				       struct drm_connector_state *conn_state,
+				       struct link_config_limits *limits)
+{
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
+	const struct drm_display_mode *adjusted_mode =
+		&pipe_config->hw.adjusted_mode;
+	int pipe_bpp;
+	int ret;
+
+	pipe_config->fec_enable = !intel_dp_is_edp(intel_dp) &&
+		intel_dp_supports_fec(intel_dp, pipe_config);
+
+	if (!intel_dp_supports_dsc(intel_dp, pipe_config))
+		return -EINVAL;
+
+	pipe_bpp = intel_dp_dsc_compute_bpp(intel_dp, conn_state->max_requested_bpc);
+
+	if (intel_dp->force_dsc_bpc) {
+		pipe_bpp = intel_dp->force_dsc_bpc * 3;
+		drm_dbg_kms(&dev_priv->drm, "Input DSC BPP forced to %d", pipe_bpp);
+	}
+
+	/* Min Input BPC for ICL+ is 8 */
+	if (pipe_bpp < 8 * 3) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "No DSC support for less than 8bpc\n");
+		return -EINVAL;
+	}
+
+	/*
+	 * For now enable DSC for max bpp, max link rate, max lane count.
+	 * Optimize this later for the minimum possible link rate/lane count
+	 * with DSC enabled for the requested mode.
+	 */
+	pipe_config->pipe_bpp = pipe_bpp;
+	pipe_config->port_clock = limits->max_rate;
+	pipe_config->lane_count = limits->max_lane_count;
+
+	if (intel_dp_is_edp(intel_dp)) {
+		pipe_config->dsc.compressed_bpp =
+			min_t(u16, drm_edp_dsc_sink_output_bpp(intel_dp->dsc_dpcd) >> 4,
+			      pipe_config->pipe_bpp);
+		pipe_config->dsc.slice_count =
+			drm_dp_dsc_sink_max_slice_count(intel_dp->dsc_dpcd,
+							true);
+		if (!pipe_config->dsc.slice_count) {
+			drm_dbg_kms(&dev_priv->drm, "Unsupported Slice Count %d\n",
+				    pipe_config->dsc.slice_count);
+			return -EINVAL;
+		}
+	} else {
+		u16 dsc_max_output_bpp;
+		u8 dsc_dp_slice_count;
+
+		dsc_max_output_bpp =
+			intel_dp_dsc_get_output_bpp(dev_priv,
+						    pipe_config->port_clock,
+						    pipe_config->lane_count,
+						    adjusted_mode->crtc_clock,
+						    adjusted_mode->crtc_hdisplay,
+						    pipe_config->bigjoiner_pipes,
+						    pipe_bpp);
+		dsc_dp_slice_count =
+			intel_dp_dsc_get_slice_count(intel_dp,
+						     adjusted_mode->crtc_clock,
+						     adjusted_mode->crtc_hdisplay,
+						     pipe_config->bigjoiner_pipes);
+		if (!dsc_max_output_bpp || !dsc_dp_slice_count) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "Compressed BPP/Slice Count not supported\n");
+			return -EINVAL;
+		}
+		pipe_config->dsc.compressed_bpp = min_t(u16,
+							       dsc_max_output_bpp >> 4,
+							       pipe_config->pipe_bpp);
+		pipe_config->dsc.slice_count = dsc_dp_slice_count;
+	}
+
+	/*
+	 * VDSC engine operates at 1 Pixel per clock, so if peak pixel rate
+	 * is greater than the maximum Cdclock and if slice count is even
+	 * then we need to use 2 VDSC instances.
+	 */
+	if (adjusted_mode->crtc_clock > dev_priv->display.cdclk.max_cdclk_freq ||
+	    pipe_config->bigjoiner_pipes) {
+		if (pipe_config->dsc.slice_count < 2) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "Cannot split stream to use 2 VDSC instances\n");
+			return -EINVAL;
+		}
+
+		pipe_config->dsc.dsc_split = true;
+	}
+
+	ret = intel_dp_dsc_compute_params(&dig_port->base, pipe_config);
+	if (ret < 0) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Cannot compute valid DSC parameters for Input Bpp = %d "
+			    "Compressed BPP = %d\n",
+			    pipe_config->pipe_bpp,
+			    pipe_config->dsc.compressed_bpp);
+		return ret;
+	}
+
+	pipe_config->dsc.compression_enable = true;
+	drm_dbg_kms(&dev_priv->drm, "DP DSC computed with Input Bpp = %d "
+		    "Compressed Bpp = %d Slice Count = %d\n",
+		    pipe_config->pipe_bpp,
+		    pipe_config->dsc.compressed_bpp,
+		    pipe_config->dsc.slice_count);
+
+	return 0;
+}
+
+static int
+intel_dp_compute_link_config(struct intel_encoder *encoder,
+			     struct intel_crtc_state *pipe_config,
+			     struct drm_connector_state *conn_state,
+			     bool respect_downstream_limits)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+	const struct drm_display_mode *adjusted_mode =
+		&pipe_config->hw.adjusted_mode;
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	struct link_config_limits limits;
+	bool joiner_needs_dsc = false;
+	int ret;
+
+	limits.min_rate = intel_dp_common_rate(intel_dp, 0);
+	limits.max_rate = intel_dp_max_link_rate(intel_dp);
+
+	limits.min_lane_count = 1;
+	limits.max_lane_count = intel_dp_max_lane_count(intel_dp);
+
+	limits.min_bpp = intel_dp_min_bpp(pipe_config->output_format);
+	limits.max_bpp = intel_dp_max_bpp(intel_dp, pipe_config, respect_downstream_limits);
+
+	if (intel_dp->use_max_params) {
+		/*
+		 * Use the maximum clock and number of lanes the eDP panel
+		 * advertizes being capable of in case the initial fast
+		 * optimal params failed us. The panels are generally
+		 * designed to support only a single clock and lane
+		 * configuration, and typically on older panels these
+		 * values correspond to the native resolution of the panel.
+		 */
+		limits.min_lane_count = limits.max_lane_count;
+		limits.min_rate = limits.max_rate;
+	}
+
+	intel_dp_adjust_compliance_config(intel_dp, pipe_config, &limits);
+
+	drm_dbg_kms(&i915->drm, "DP link computation with max lane count %i "
+		    "max rate %d max bpp %d pixel clock %iKHz\n",
+		    limits.max_lane_count, limits.max_rate,
+		    limits.max_bpp, adjusted_mode->crtc_clock);
+
+	if (intel_dp_need_bigjoiner(intel_dp, adjusted_mode->crtc_hdisplay,
+				    adjusted_mode->crtc_clock))
+		pipe_config->bigjoiner_pipes = GENMASK(crtc->pipe + 1, crtc->pipe);
+
+	/*
+	 * Pipe joiner needs compression up to display 12 due to bandwidth
+	 * limitation. DG2 onwards pipe joiner can be enabled without
+	 * compression.
+	 */
+	joiner_needs_dsc = DISPLAY_VER(i915) < 13 && pipe_config->bigjoiner_pipes;
+
+	/*
+	 * Optimize for slow and wide for everything, because there are some
+	 * eDP 1.3 and 1.4 panels don't work well with fast and narrow.
+	 */
+	ret = intel_dp_compute_link_config_wide(intel_dp, pipe_config, conn_state, &limits);
+
+	if (ret || joiner_needs_dsc || intel_dp->force_dsc_en) {
+		drm_dbg_kms(&i915->drm, "Try DSC (fallback=%s, joiner=%s, force=%s)\n",
+			    str_yes_no(ret), str_yes_no(joiner_needs_dsc),
+			    str_yes_no(intel_dp->force_dsc_en));
+		ret = intel_dp_dsc_compute_config(intel_dp, pipe_config,
+						  conn_state, &limits);
+		if (ret < 0)
+			return ret;
+	}
+
+	if (pipe_config->dsc.compression_enable) {
+		drm_dbg_kms(&i915->drm,
+			    "DP lane count %d clock %d Input bpp %d Compressed bpp %d\n",
+			    pipe_config->lane_count, pipe_config->port_clock,
+			    pipe_config->pipe_bpp,
+			    pipe_config->dsc.compressed_bpp);
+
+		drm_dbg_kms(&i915->drm,
+			    "DP link rate required %i available %i\n",
+			    intel_dp_link_required(adjusted_mode->crtc_clock,
+						   pipe_config->dsc.compressed_bpp),
+			    intel_dp_max_data_rate(pipe_config->port_clock,
+						   pipe_config->lane_count));
+	} else {
+		drm_dbg_kms(&i915->drm, "DP lane count %d clock %d bpp %d\n",
+			    pipe_config->lane_count, pipe_config->port_clock,
+			    pipe_config->pipe_bpp);
+
+		drm_dbg_kms(&i915->drm,
+			    "DP link rate required %i available %i\n",
+			    intel_dp_link_required(adjusted_mode->crtc_clock,
+						   pipe_config->pipe_bpp),
+			    intel_dp_max_data_rate(pipe_config->port_clock,
+						   pipe_config->lane_count));
+	}
+	return 0;
+}
+
+bool intel_dp_limited_color_range(const struct intel_crtc_state *crtc_state,
+				  const struct drm_connector_state *conn_state)
+{
+	const struct intel_digital_connector_state *intel_conn_state =
+		to_intel_digital_connector_state(conn_state);
+	const struct drm_display_mode *adjusted_mode =
+		&crtc_state->hw.adjusted_mode;
+
+	/*
+	 * Our YCbCr output is always limited range.
+	 * crtc_state->limited_color_range only applies to RGB,
+	 * and it must never be set for YCbCr or we risk setting
+	 * some conflicting bits in PIPECONF which will mess up
+	 * the colors on the monitor.
+	 */
+	if (crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB)
+		return false;
+
+	if (intel_conn_state->broadcast_rgb == INTEL_BROADCAST_RGB_AUTO) {
+		/*
+		 * See:
+		 * CEA-861-E - 5.1 Default Encoding Parameters
+		 * VESA DisplayPort Ver.1.2a - 5.1.1.1 Video Colorimetry
+		 */
+		return crtc_state->pipe_bpp != 18 &&
+			drm_default_rgb_quant_range(adjusted_mode) ==
+			HDMI_QUANTIZATION_RANGE_LIMITED;
+	} else {
+		return intel_conn_state->broadcast_rgb ==
+			INTEL_BROADCAST_RGB_LIMITED;
+	}
+}
+
+static bool intel_dp_port_has_audio(struct drm_i915_private *dev_priv,
+				    enum port port)
+{
+	if (IS_G4X(dev_priv))
+		return false;
+	if (DISPLAY_VER(dev_priv) < 12 && port == PORT_A)
+		return false;
+
+	return true;
+}
+
+static void intel_dp_compute_vsc_colorimetry(const struct intel_crtc_state *crtc_state,
+					     const struct drm_connector_state *conn_state,
+					     struct drm_dp_vsc_sdp *vsc)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+
+	/*
+	 * Prepare VSC Header for SU as per DP 1.4 spec, Table 2-118
+	 * VSC SDP supporting 3D stereo, PSR2, and Pixel Encoding/
+	 * Colorimetry Format indication.
+	 */
+	vsc->revision = 0x5;
+	vsc->length = 0x13;
+
+	/* DP 1.4a spec, Table 2-120 */
+	switch (crtc_state->output_format) {
+	case INTEL_OUTPUT_FORMAT_YCBCR444:
+		vsc->pixelformat = DP_PIXELFORMAT_YUV444;
+		break;
+	case INTEL_OUTPUT_FORMAT_YCBCR420:
+		vsc->pixelformat = DP_PIXELFORMAT_YUV420;
+		break;
+	case INTEL_OUTPUT_FORMAT_RGB:
+	default:
+		vsc->pixelformat = DP_PIXELFORMAT_RGB;
+	}
+
+	switch (conn_state->colorspace) {
+	case DRM_MODE_COLORIMETRY_BT709_YCC:
+		vsc->colorimetry = DP_COLORIMETRY_BT709_YCC;
+		break;
+	case DRM_MODE_COLORIMETRY_XVYCC_601:
+		vsc->colorimetry = DP_COLORIMETRY_XVYCC_601;
+		break;
+	case DRM_MODE_COLORIMETRY_XVYCC_709:
+		vsc->colorimetry = DP_COLORIMETRY_XVYCC_709;
+		break;
+	case DRM_MODE_COLORIMETRY_SYCC_601:
+		vsc->colorimetry = DP_COLORIMETRY_SYCC_601;
+		break;
+	case DRM_MODE_COLORIMETRY_OPYCC_601:
+		vsc->colorimetry = DP_COLORIMETRY_OPYCC_601;
+		break;
+	case DRM_MODE_COLORIMETRY_BT2020_CYCC:
+		vsc->colorimetry = DP_COLORIMETRY_BT2020_CYCC;
+		break;
+	case DRM_MODE_COLORIMETRY_BT2020_RGB:
+		vsc->colorimetry = DP_COLORIMETRY_BT2020_RGB;
+		break;
+	case DRM_MODE_COLORIMETRY_BT2020_YCC:
+		vsc->colorimetry = DP_COLORIMETRY_BT2020_YCC;
+		break;
+	case DRM_MODE_COLORIMETRY_DCI_P3_RGB_D65:
+	case DRM_MODE_COLORIMETRY_DCI_P3_RGB_THEATER:
+		vsc->colorimetry = DP_COLORIMETRY_DCI_P3_RGB;
+		break;
+	default:
+		/*
+		 * RGB->YCBCR color conversion uses the BT.709
+		 * color space.
+		 */
+		if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420)
+			vsc->colorimetry = DP_COLORIMETRY_BT709_YCC;
+		else
+			vsc->colorimetry = DP_COLORIMETRY_DEFAULT;
+		break;
+	}
+
+	vsc->bpc = crtc_state->pipe_bpp / 3;
+
+	/* only RGB pixelformat supports 6 bpc */
+	drm_WARN_ON(&dev_priv->drm,
+		    vsc->bpc == 6 && vsc->pixelformat != DP_PIXELFORMAT_RGB);
+
+	/* all YCbCr are always limited range */
+	vsc->dynamic_range = DP_DYNAMIC_RANGE_CTA;
+	vsc->content_type = DP_CONTENT_TYPE_NOT_DEFINED;
+}
+
+static void intel_dp_compute_vsc_sdp(struct intel_dp *intel_dp,
+				     struct intel_crtc_state *crtc_state,
+				     const struct drm_connector_state *conn_state)
+{
+	struct drm_dp_vsc_sdp *vsc = &crtc_state->infoframes.vsc;
+
+	/* When a crtc state has PSR, VSC SDP will be handled by PSR routine */
+	if (crtc_state->has_psr)
+		return;
+
+	if (!intel_dp_needs_vsc_sdp(crtc_state, conn_state))
+		return;
+
+	crtc_state->infoframes.enable |= intel_hdmi_infoframe_enable(DP_SDP_VSC);
+	vsc->sdp_type = DP_SDP_VSC;
+	intel_dp_compute_vsc_colorimetry(crtc_state, conn_state,
+					 &crtc_state->infoframes.vsc);
+}
+
+void intel_dp_compute_psr_vsc_sdp(struct intel_dp *intel_dp,
+				  const struct intel_crtc_state *crtc_state,
+				  const struct drm_connector_state *conn_state,
+				  struct drm_dp_vsc_sdp *vsc)
+{
+	vsc->sdp_type = DP_SDP_VSC;
+
+	if (crtc_state->has_psr2) {
+		if (intel_dp->psr.colorimetry_support &&
+		    intel_dp_needs_vsc_sdp(crtc_state, conn_state)) {
+			/* [PSR2, +Colorimetry] */
+			intel_dp_compute_vsc_colorimetry(crtc_state, conn_state,
+							 vsc);
+		} else {
+			/*
+			 * [PSR2, -Colorimetry]
+			 * Prepare VSC Header for SU as per eDP 1.4 spec, Table 6-11
+			 * 3D stereo + PSR/PSR2 + Y-coordinate.
+			 */
+			vsc->revision = 0x4;
+			vsc->length = 0xe;
+		}
+	} else {
+		/*
+		 * [PSR1]
+		 * Prepare VSC Header for SU as per DP 1.4 spec, Table 2-118
+		 * VSC SDP supporting 3D stereo + PSR (applies to eDP v1.3 or
+		 * higher).
+		 */
+		vsc->revision = 0x2;
+		vsc->length = 0x8;
+	}
+}
+
+static void
+intel_dp_compute_hdr_metadata_infoframe_sdp(struct intel_dp *intel_dp,
+					    struct intel_crtc_state *crtc_state,
+					    const struct drm_connector_state *conn_state)
+{
+	int ret;
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct hdmi_drm_infoframe *drm_infoframe = &crtc_state->infoframes.drm.drm;
+
+	if (!conn_state->hdr_output_metadata)
+		return;
+
+	ret = drm_hdmi_infoframe_set_hdr_metadata(drm_infoframe, conn_state);
+
+	if (ret) {
+		drm_dbg_kms(&dev_priv->drm, "couldn't set HDR metadata in infoframe\n");
+		return;
+	}
+
+	crtc_state->infoframes.enable |=
+		intel_hdmi_infoframe_enable(HDMI_PACKET_TYPE_GAMUT_METADATA);
+}
+
+static bool cpu_transcoder_has_drrs(struct drm_i915_private *i915,
+				    enum transcoder cpu_transcoder)
+{
+	if (HAS_DOUBLE_BUFFERED_M_N(i915))
+		return true;
+
+	return intel_cpu_transcoder_has_m2_n2(i915, cpu_transcoder);
+}
+
+static bool can_enable_drrs(struct intel_connector *connector,
+			    const struct intel_crtc_state *pipe_config,
+			    const struct drm_display_mode *downclock_mode)
+{
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+
+	if (pipe_config->vrr.enable)
+		return false;
+
+	/*
+	 * DRRS and PSR can't be enable together, so giving preference to PSR
+	 * as it allows more power-savings by complete shutting down display,
+	 * so to guarantee this, intel_drrs_compute_config() must be called
+	 * after intel_psr_compute_config().
+	 */
+	if (pipe_config->has_psr)
+		return false;
+
+	/* FIXME missing FDI M2/N2 etc. */
+	if (pipe_config->has_pch_encoder)
+		return false;
+
+	if (!cpu_transcoder_has_drrs(i915, pipe_config->cpu_transcoder))
+		return false;
+
+	return downclock_mode &&
+		intel_panel_drrs_type(connector) == DRRS_TYPE_SEAMLESS;
+}
+
+static void
+intel_dp_drrs_compute_config(struct intel_connector *connector,
+			     struct intel_crtc_state *pipe_config,
+			     int output_bpp)
+{
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+	const struct drm_display_mode *downclock_mode =
+		intel_panel_downclock_mode(connector, &pipe_config->hw.adjusted_mode);
+	int pixel_clock;
+
+	if (has_seamless_m_n(connector))
+		pipe_config->seamless_m_n = true;
+
+	if (!can_enable_drrs(connector, pipe_config, downclock_mode)) {
+		if (intel_cpu_transcoder_has_m2_n2(i915, pipe_config->cpu_transcoder))
+			intel_zero_m_n(&pipe_config->dp_m2_n2);
+		return;
+	}
+
+	if (IS_IRONLAKE(i915) || IS_SANDYBRIDGE(i915) || IS_IVYBRIDGE(i915))
+		pipe_config->msa_timing_delay = connector->panel.vbt.edp.drrs_msa_timing_delay;
+
+	pipe_config->has_drrs = true;
+
+	pixel_clock = downclock_mode->clock;
+	if (pipe_config->splitter.enable)
+		pixel_clock /= pipe_config->splitter.link_count;
+
+	intel_link_compute_m_n(output_bpp, pipe_config->lane_count, pixel_clock,
+			       pipe_config->port_clock, &pipe_config->dp_m2_n2,
+			       pipe_config->fec_enable);
+
+	/* FIXME: abstract this better */
+	if (pipe_config->splitter.enable)
+		pipe_config->dp_m2_n2.data_m *= pipe_config->splitter.link_count;
+}
+
+static bool intel_dp_has_audio(struct intel_encoder *encoder,
+			       const struct intel_crtc_state *crtc_state,
+			       const struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	const struct intel_digital_connector_state *intel_conn_state =
+		to_intel_digital_connector_state(conn_state);
+
+	if (!intel_dp_port_has_audio(i915, encoder->port))
+		return false;
+
+	if (intel_conn_state->force_audio == HDMI_AUDIO_AUTO)
+		return intel_dp->has_audio;
+	else
+		return intel_conn_state->force_audio == HDMI_AUDIO_ON;
+}
+
+static int
+intel_dp_compute_output_format(struct intel_encoder *encoder,
+			       struct intel_crtc_state *crtc_state,
+			       struct drm_connector_state *conn_state,
+			       bool respect_downstream_limits)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	struct intel_connector *connector = intel_dp->attached_connector;
+	const struct drm_display_info *info = &connector->base.display_info;
+	const struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode;
+	bool ycbcr_420_only;
+	int ret;
+
+	ycbcr_420_only = drm_mode_is_420_only(info, adjusted_mode);
+
+	crtc_state->output_format = intel_dp_output_format(connector, ycbcr_420_only);
+
+	if (ycbcr_420_only && !intel_dp_is_ycbcr420(intel_dp, crtc_state)) {
+		drm_dbg_kms(&i915->drm,
+			    "YCbCr 4:2:0 mode but YCbCr 4:2:0 output not possible. Falling back to RGB.\n");
+		crtc_state->output_format = INTEL_OUTPUT_FORMAT_RGB;
+	}
+
+	ret = intel_dp_compute_link_config(encoder, crtc_state, conn_state,
+					   respect_downstream_limits);
+	if (ret) {
+		if (intel_dp_is_ycbcr420(intel_dp, crtc_state) ||
+		    !connector->base.ycbcr_420_allowed ||
+		    !drm_mode_is_420_also(info, adjusted_mode))
+			return ret;
+
+		crtc_state->output_format = intel_dp_output_format(connector, true);
+		ret = intel_dp_compute_link_config(encoder, crtc_state, conn_state,
+						   respect_downstream_limits);
+	}
+
+	return ret;
+}
+
+int
+intel_dp_compute_config(struct intel_encoder *encoder,
+			struct intel_crtc_state *pipe_config,
+			struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct drm_display_mode *adjusted_mode = &pipe_config->hw.adjusted_mode;
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	const struct drm_display_mode *fixed_mode;
+	struct intel_connector *connector = intel_dp->attached_connector;
+	int ret = 0, output_bpp;
+
+	if (HAS_PCH_SPLIT(dev_priv) && !HAS_DDI(dev_priv) && encoder->port != PORT_A)
+		pipe_config->has_pch_encoder = true;
+
+	pipe_config->has_audio = intel_dp_has_audio(encoder, pipe_config, conn_state);
+
+	fixed_mode = intel_panel_fixed_mode(connector, adjusted_mode);
+	if (intel_dp_is_edp(intel_dp) && fixed_mode) {
+		ret = intel_panel_compute_config(connector, adjusted_mode);
+		if (ret)
+			return ret;
+	}
+
+	if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)
+		return -EINVAL;
+
+	if (HAS_GMCH(dev_priv) &&
+	    adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE)
+		return -EINVAL;
+
+	if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK)
+		return -EINVAL;
+
+	if (intel_dp_hdisplay_bad(dev_priv, adjusted_mode->crtc_hdisplay))
+		return -EINVAL;
+
+	/*
+	 * Try to respect downstream TMDS clock limits first, if
+	 * that fails assume the user might know something we don't.
+	 */
+	ret = intel_dp_compute_output_format(encoder, pipe_config, conn_state, true);
+	if (ret)
+		ret = intel_dp_compute_output_format(encoder, pipe_config, conn_state, false);
+	if (ret)
+		return ret;
+
+	if ((intel_dp_is_edp(intel_dp) && fixed_mode) ||
+	    pipe_config->output_format == INTEL_OUTPUT_FORMAT_YCBCR420) {
+		ret = intel_panel_fitting(pipe_config, conn_state);
+		if (ret)
+			return ret;
+	}
+
+	pipe_config->limited_color_range =
+		intel_dp_limited_color_range(pipe_config, conn_state);
+
+	if (pipe_config->dsc.compression_enable)
+		output_bpp = pipe_config->dsc.compressed_bpp;
+	else
+		output_bpp = intel_dp_output_bpp(pipe_config->output_format,
+						 pipe_config->pipe_bpp);
+
+	if (intel_dp->mso_link_count) {
+		int n = intel_dp->mso_link_count;
+		int overlap = intel_dp->mso_pixel_overlap;
+
+		pipe_config->splitter.enable = true;
+		pipe_config->splitter.link_count = n;
+		pipe_config->splitter.pixel_overlap = overlap;
+
+		drm_dbg_kms(&dev_priv->drm, "MSO link count %d, pixel overlap %d\n",
+			    n, overlap);
+
+		adjusted_mode->crtc_hdisplay = adjusted_mode->crtc_hdisplay / n + overlap;
+		adjusted_mode->crtc_hblank_start = adjusted_mode->crtc_hblank_start / n + overlap;
+		adjusted_mode->crtc_hblank_end = adjusted_mode->crtc_hblank_end / n + overlap;
+		adjusted_mode->crtc_hsync_start = adjusted_mode->crtc_hsync_start / n + overlap;
+		adjusted_mode->crtc_hsync_end = adjusted_mode->crtc_hsync_end / n + overlap;
+		adjusted_mode->crtc_htotal = adjusted_mode->crtc_htotal / n + overlap;
+		adjusted_mode->crtc_clock /= n;
+	}
+
+	intel_link_compute_m_n(output_bpp,
+			       pipe_config->lane_count,
+			       adjusted_mode->crtc_clock,
+			       pipe_config->port_clock,
+			       &pipe_config->dp_m_n,
+			       pipe_config->fec_enable);
+
+	/* FIXME: abstract this better */
+	if (pipe_config->splitter.enable)
+		pipe_config->dp_m_n.data_m *= pipe_config->splitter.link_count;
+
+	if (!HAS_DDI(dev_priv))
+		g4x_dp_set_clock(encoder, pipe_config);
+
+	intel_vrr_compute_config(pipe_config, conn_state);
+	intel_psr_compute_config(intel_dp, pipe_config, conn_state);
+	intel_dp_drrs_compute_config(connector, pipe_config, output_bpp);
+	intel_dp_compute_vsc_sdp(intel_dp, pipe_config, conn_state);
+	intel_dp_compute_hdr_metadata_infoframe_sdp(intel_dp, pipe_config, conn_state);
+
+	return 0;
+}
+
+void intel_dp_set_link_params(struct intel_dp *intel_dp,
+			      int link_rate, int lane_count)
+{
+	memset(intel_dp->train_set, 0, sizeof(intel_dp->train_set));
+	intel_dp->link_trained = false;
+	intel_dp->link_rate = link_rate;
+	intel_dp->lane_count = lane_count;
+}
+
+static void intel_dp_reset_max_link_params(struct intel_dp *intel_dp)
+{
+	intel_dp->max_link_lane_count = intel_dp_max_common_lane_count(intel_dp);
+	intel_dp->max_link_rate = intel_dp_max_common_rate(intel_dp);
+}
+
+/* Enable backlight PWM and backlight PP control. */
+void intel_edp_backlight_on(const struct intel_crtc_state *crtc_state,
+			    const struct drm_connector_state *conn_state)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(to_intel_encoder(conn_state->best_encoder));
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+
+	if (!intel_dp_is_edp(intel_dp))
+		return;
+
+	drm_dbg_kms(&i915->drm, "\n");
+
+	intel_backlight_enable(crtc_state, conn_state);
+	intel_pps_backlight_on(intel_dp);
+}
+
+/* Disable backlight PP control and backlight PWM. */
+void intel_edp_backlight_off(const struct drm_connector_state *old_conn_state)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(to_intel_encoder(old_conn_state->best_encoder));
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+
+	if (!intel_dp_is_edp(intel_dp))
+		return;
+
+	drm_dbg_kms(&i915->drm, "\n");
+
+	intel_pps_backlight_off(intel_dp);
+	intel_backlight_disable(old_conn_state);
+}
+
+static bool downstream_hpd_needs_d0(struct intel_dp *intel_dp)
+{
+	/*
+	 * DPCD 1.2+ should support BRANCH_DEVICE_CTRL, and thus
+	 * be capable of signalling downstream hpd with a long pulse.
+	 * Whether or not that means D3 is safe to use is not clear,
+	 * but let's assume so until proven otherwise.
+	 *
+	 * FIXME should really check all downstream ports...
+	 */
+	return intel_dp->dpcd[DP_DPCD_REV] == 0x11 &&
+		drm_dp_is_branch(intel_dp->dpcd) &&
+		intel_dp->downstream_ports[0] & DP_DS_PORT_HPD;
+}
+
+void intel_dp_sink_set_decompression_state(struct intel_dp *intel_dp,
+					   const struct intel_crtc_state *crtc_state,
+					   bool enable)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	int ret;
+
+	if (!crtc_state->dsc.compression_enable)
+		return;
+
+	ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_DSC_ENABLE,
+				 enable ? DP_DECOMPRESSION_EN : 0);
+	if (ret < 0)
+		drm_dbg_kms(&i915->drm,
+			    "Failed to %s sink decompression state\n",
+			    str_enable_disable(enable));
+}
+
+static void
+intel_edp_init_source_oui(struct intel_dp *intel_dp, bool careful)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	u8 oui[] = { 0x00, 0xaa, 0x01 };
+	u8 buf[3] = { 0 };
+
+	/*
+	 * During driver init, we want to be careful and avoid changing the source OUI if it's
+	 * already set to what we want, so as to avoid clearing any state by accident
+	 */
+	if (careful) {
+		if (drm_dp_dpcd_read(&intel_dp->aux, DP_SOURCE_OUI, buf, sizeof(buf)) < 0)
+			drm_err(&i915->drm, "Failed to read source OUI\n");
+
+		if (memcmp(oui, buf, sizeof(oui)) == 0)
+			return;
+	}
+
+	if (drm_dp_dpcd_write(&intel_dp->aux, DP_SOURCE_OUI, oui, sizeof(oui)) < 0)
+		drm_err(&i915->drm, "Failed to write source OUI\n");
+
+	intel_dp->last_oui_write = jiffies;
+}
+
+void intel_dp_wait_source_oui(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+
+	drm_dbg_kms(&i915->drm, "Performing OUI wait\n");
+	wait_remaining_ms_from_jiffies(intel_dp->last_oui_write, 30);
+}
+
+/* If the device supports it, try to set the power state appropriately */
+void intel_dp_set_power(struct intel_dp *intel_dp, u8 mode)
+{
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	int ret, i;
+
+	/* Should have a valid DPCD by this point */
+	if (intel_dp->dpcd[DP_DPCD_REV] < 0x11)
+		return;
+
+	if (mode != DP_SET_POWER_D0) {
+		if (downstream_hpd_needs_d0(intel_dp))
+			return;
+
+		ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, mode);
+	} else {
+		struct intel_lspcon *lspcon = dp_to_lspcon(intel_dp);
+
+		lspcon_resume(dp_to_dig_port(intel_dp));
+
+		/* Write the source OUI as early as possible */
+		if (intel_dp_is_edp(intel_dp))
+			intel_edp_init_source_oui(intel_dp, false);
+
+		/*
+		 * When turning on, we need to retry for 1ms to give the sink
+		 * time to wake up.
+		 */
+		for (i = 0; i < 3; i++) {
+			ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, mode);
+			if (ret == 1)
+				break;
+			msleep(1);
+		}
+
+		if (ret == 1 && lspcon->active)
+			lspcon_wait_pcon_mode(lspcon);
+	}
+
+	if (ret != 1)
+		drm_dbg_kms(&i915->drm, "[ENCODER:%d:%s] Set power to %s failed\n",
+			    encoder->base.base.id, encoder->base.name,
+			    mode == DP_SET_POWER_D0 ? "D0" : "D3");
+}
+
+static bool
+intel_dp_get_dpcd(struct intel_dp *intel_dp);
+
+/**
+ * intel_dp_sync_state - sync the encoder state during init/resume
+ * @encoder: intel encoder to sync
+ * @crtc_state: state for the CRTC connected to the encoder
+ *
+ * Sync any state stored in the encoder wrt. HW state during driver init
+ * and system resume.
+ */
+void intel_dp_sync_state(struct intel_encoder *encoder,
+			 const struct intel_crtc_state *crtc_state)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+
+	if (!crtc_state)
+		return;
+
+	/*
+	 * Don't clobber DPCD if it's been already read out during output
+	 * setup (eDP) or detect.
+	 */
+	if (intel_dp->dpcd[DP_DPCD_REV] == 0)
+		intel_dp_get_dpcd(intel_dp);
+
+	intel_dp_reset_max_link_params(intel_dp);
+}
+
+bool intel_dp_initial_fastset_check(struct intel_encoder *encoder,
+				    struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+
+	/*
+	 * If BIOS has set an unsupported or non-standard link rate for some
+	 * reason force an encoder recompute and full modeset.
+	 */
+	if (intel_dp_rate_index(intel_dp->source_rates, intel_dp->num_source_rates,
+				crtc_state->port_clock) < 0) {
+		drm_dbg_kms(&i915->drm, "Forcing full modeset due to unsupported link rate\n");
+		crtc_state->uapi.connectors_changed = true;
+		return false;
+	}
+
+	/*
+	 * FIXME hack to force full modeset when DSC is being used.
+	 *
+	 * As long as we do not have full state readout and config comparison
+	 * of crtc_state->dsc, we have no way to ensure reliable fastset.
+	 * Remove once we have readout for DSC.
+	 */
+	if (crtc_state->dsc.compression_enable) {
+		drm_dbg_kms(&i915->drm, "Forcing full modeset due to DSC being enabled\n");
+		crtc_state->uapi.mode_changed = true;
+		return false;
+	}
+
+	if (CAN_PSR(intel_dp)) {
+		drm_dbg_kms(&i915->drm, "Forcing full modeset to compute PSR state\n");
+		crtc_state->uapi.mode_changed = true;
+		return false;
+	}
+
+	return true;
+}
+
+static void intel_dp_get_pcon_dsc_cap(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+
+	/* Clear the cached register set to avoid using stale values */
+
+	memset(intel_dp->pcon_dsc_dpcd, 0, sizeof(intel_dp->pcon_dsc_dpcd));
+
+	if (drm_dp_dpcd_read(&intel_dp->aux, DP_PCON_DSC_ENCODER,
+			     intel_dp->pcon_dsc_dpcd,
+			     sizeof(intel_dp->pcon_dsc_dpcd)) < 0)
+		drm_err(&i915->drm, "Failed to read DPCD register 0x%x\n",
+			DP_PCON_DSC_ENCODER);
+
+	drm_dbg_kms(&i915->drm, "PCON ENCODER DSC DPCD: %*ph\n",
+		    (int)sizeof(intel_dp->pcon_dsc_dpcd), intel_dp->pcon_dsc_dpcd);
+}
+
+static int intel_dp_pcon_get_frl_mask(u8 frl_bw_mask)
+{
+	int bw_gbps[] = {9, 18, 24, 32, 40, 48};
+	int i;
+
+	for (i = ARRAY_SIZE(bw_gbps) - 1; i >= 0; i--) {
+		if (frl_bw_mask & (1 << i))
+			return bw_gbps[i];
+	}
+	return 0;
+}
+
+static int intel_dp_pcon_set_frl_mask(int max_frl)
+{
+	switch (max_frl) {
+	case 48:
+		return DP_PCON_FRL_BW_MASK_48GBPS;
+	case 40:
+		return DP_PCON_FRL_BW_MASK_40GBPS;
+	case 32:
+		return DP_PCON_FRL_BW_MASK_32GBPS;
+	case 24:
+		return DP_PCON_FRL_BW_MASK_24GBPS;
+	case 18:
+		return DP_PCON_FRL_BW_MASK_18GBPS;
+	case 9:
+		return DP_PCON_FRL_BW_MASK_9GBPS;
+	}
+
+	return 0;
+}
+
+static int intel_dp_hdmi_sink_max_frl(struct intel_dp *intel_dp)
+{
+	struct intel_connector *intel_connector = intel_dp->attached_connector;
+	struct drm_connector *connector = &intel_connector->base;
+	int max_frl_rate;
+	int max_lanes, rate_per_lane;
+	int max_dsc_lanes, dsc_rate_per_lane;
+
+	max_lanes = connector->display_info.hdmi.max_lanes;
+	rate_per_lane = connector->display_info.hdmi.max_frl_rate_per_lane;
+	max_frl_rate = max_lanes * rate_per_lane;
+
+	if (connector->display_info.hdmi.dsc_cap.v_1p2) {
+		max_dsc_lanes = connector->display_info.hdmi.dsc_cap.max_lanes;
+		dsc_rate_per_lane = connector->display_info.hdmi.dsc_cap.max_frl_rate_per_lane;
+		if (max_dsc_lanes && dsc_rate_per_lane)
+			max_frl_rate = min(max_frl_rate, max_dsc_lanes * dsc_rate_per_lane);
+	}
+
+	return max_frl_rate;
+}
+
+static bool
+intel_dp_pcon_is_frl_trained(struct intel_dp *intel_dp,
+			     u8 max_frl_bw_mask, u8 *frl_trained_mask)
+{
+	if (drm_dp_pcon_hdmi_link_active(&intel_dp->aux) &&
+	    drm_dp_pcon_hdmi_link_mode(&intel_dp->aux, frl_trained_mask) == DP_PCON_HDMI_MODE_FRL &&
+	    *frl_trained_mask >= max_frl_bw_mask)
+		return true;
+
+	return false;
+}
+
+static int intel_dp_pcon_start_frl_training(struct intel_dp *intel_dp)
+{
+#define TIMEOUT_FRL_READY_MS 500
+#define TIMEOUT_HDMI_LINK_ACTIVE_MS 1000
+
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	int max_frl_bw, max_pcon_frl_bw, max_edid_frl_bw, ret;
+	u8 max_frl_bw_mask = 0, frl_trained_mask;
+	bool is_active;
+
+	max_pcon_frl_bw = intel_dp->dfp.pcon_max_frl_bw;
+	drm_dbg(&i915->drm, "PCON max rate = %d Gbps\n", max_pcon_frl_bw);
+
+	max_edid_frl_bw = intel_dp_hdmi_sink_max_frl(intel_dp);
+	drm_dbg(&i915->drm, "Sink max rate from EDID = %d Gbps\n", max_edid_frl_bw);
+
+	max_frl_bw = min(max_edid_frl_bw, max_pcon_frl_bw);
+
+	if (max_frl_bw <= 0)
+		return -EINVAL;
+
+	max_frl_bw_mask = intel_dp_pcon_set_frl_mask(max_frl_bw);
+	drm_dbg(&i915->drm, "MAX_FRL_BW_MASK = %u\n", max_frl_bw_mask);
+
+	if (intel_dp_pcon_is_frl_trained(intel_dp, max_frl_bw_mask, &frl_trained_mask))
+		goto frl_trained;
+
+	ret = drm_dp_pcon_frl_prepare(&intel_dp->aux, false);
+	if (ret < 0)
+		return ret;
+	/* Wait for PCON to be FRL Ready */
+	wait_for(is_active = drm_dp_pcon_is_frl_ready(&intel_dp->aux) == true, TIMEOUT_FRL_READY_MS);
+
+	if (!is_active)
+		return -ETIMEDOUT;
+
+	ret = drm_dp_pcon_frl_configure_1(&intel_dp->aux, max_frl_bw,
+					  DP_PCON_ENABLE_SEQUENTIAL_LINK);
+	if (ret < 0)
+		return ret;
+	ret = drm_dp_pcon_frl_configure_2(&intel_dp->aux, max_frl_bw_mask,
+					  DP_PCON_FRL_LINK_TRAIN_NORMAL);
+	if (ret < 0)
+		return ret;
+	ret = drm_dp_pcon_frl_enable(&intel_dp->aux);
+	if (ret < 0)
+		return ret;
+	/*
+	 * Wait for FRL to be completed
+	 * Check if the HDMI Link is up and active.
+	 */
+	wait_for(is_active =
+		 intel_dp_pcon_is_frl_trained(intel_dp, max_frl_bw_mask, &frl_trained_mask),
+		 TIMEOUT_HDMI_LINK_ACTIVE_MS);
+
+	if (!is_active)
+		return -ETIMEDOUT;
+
+frl_trained:
+	drm_dbg(&i915->drm, "FRL_TRAINED_MASK = %u\n", frl_trained_mask);
+	intel_dp->frl.trained_rate_gbps = intel_dp_pcon_get_frl_mask(frl_trained_mask);
+	intel_dp->frl.is_trained = true;
+	drm_dbg(&i915->drm, "FRL trained with : %d Gbps\n", intel_dp->frl.trained_rate_gbps);
+
+	return 0;
+}
+
+static bool intel_dp_is_hdmi_2_1_sink(struct intel_dp *intel_dp)
+{
+	if (drm_dp_is_branch(intel_dp->dpcd) &&
+	    intel_dp->has_hdmi_sink &&
+	    intel_dp_hdmi_sink_max_frl(intel_dp) > 0)
+		return true;
+
+	return false;
+}
+
+static
+int intel_dp_pcon_set_tmds_mode(struct intel_dp *intel_dp)
+{
+	int ret;
+	u8 buf = 0;
+
+	/* Set PCON source control mode */
+	buf |= DP_PCON_ENABLE_SOURCE_CTL_MODE;
+
+	ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_PCON_HDMI_LINK_CONFIG_1, buf);
+	if (ret < 0)
+		return ret;
+
+	/* Set HDMI LINK ENABLE */
+	buf |= DP_PCON_ENABLE_HDMI_LINK;
+	ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_PCON_HDMI_LINK_CONFIG_1, buf);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+void intel_dp_check_frl_training(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+	/*
+	 * Always go for FRL training if:
+	 * -PCON supports SRC_CTL_MODE (VESA DP2.0-HDMI2.1 PCON Spec Draft-1 Sec-7)
+	 * -sink is HDMI2.1
+	 */
+	if (!(intel_dp->downstream_ports[2] & DP_PCON_SOURCE_CTL_MODE) ||
+	    !intel_dp_is_hdmi_2_1_sink(intel_dp) ||
+	    intel_dp->frl.is_trained)
+		return;
+
+	if (intel_dp_pcon_start_frl_training(intel_dp) < 0) {
+		int ret, mode;
+
+		drm_dbg(&dev_priv->drm, "Couldn't set FRL mode, continuing with TMDS mode\n");
+		ret = intel_dp_pcon_set_tmds_mode(intel_dp);
+		mode = drm_dp_pcon_hdmi_link_mode(&intel_dp->aux, NULL);
+
+		if (ret < 0 || mode != DP_PCON_HDMI_MODE_TMDS)
+			drm_dbg(&dev_priv->drm, "Issue with PCON, cannot set TMDS mode\n");
+	} else {
+		drm_dbg(&dev_priv->drm, "FRL training Completed\n");
+	}
+}
+
+static int
+intel_dp_pcon_dsc_enc_slice_height(const struct intel_crtc_state *crtc_state)
+{
+	int vactive = crtc_state->hw.adjusted_mode.vdisplay;
+
+	return intel_hdmi_dsc_get_slice_height(vactive);
+}
+
+static int
+intel_dp_pcon_dsc_enc_slices(struct intel_dp *intel_dp,
+			     const struct intel_crtc_state *crtc_state)
+{
+	struct intel_connector *intel_connector = intel_dp->attached_connector;
+	struct drm_connector *connector = &intel_connector->base;
+	int hdmi_throughput = connector->display_info.hdmi.dsc_cap.clk_per_slice;
+	int hdmi_max_slices = connector->display_info.hdmi.dsc_cap.max_slices;
+	int pcon_max_slices = drm_dp_pcon_dsc_max_slices(intel_dp->pcon_dsc_dpcd);
+	int pcon_max_slice_width = drm_dp_pcon_dsc_max_slice_width(intel_dp->pcon_dsc_dpcd);
+
+	return intel_hdmi_dsc_get_num_slices(crtc_state, pcon_max_slices,
+					     pcon_max_slice_width,
+					     hdmi_max_slices, hdmi_throughput);
+}
+
+static int
+intel_dp_pcon_dsc_enc_bpp(struct intel_dp *intel_dp,
+			  const struct intel_crtc_state *crtc_state,
+			  int num_slices, int slice_width)
+{
+	struct intel_connector *intel_connector = intel_dp->attached_connector;
+	struct drm_connector *connector = &intel_connector->base;
+	int output_format = crtc_state->output_format;
+	bool hdmi_all_bpp = connector->display_info.hdmi.dsc_cap.all_bpp;
+	int pcon_fractional_bpp = drm_dp_pcon_dsc_bpp_incr(intel_dp->pcon_dsc_dpcd);
+	int hdmi_max_chunk_bytes =
+		connector->display_info.hdmi.dsc_cap.total_chunk_kbytes * 1024;
+
+	return intel_hdmi_dsc_get_bpp(pcon_fractional_bpp, slice_width,
+				      num_slices, output_format, hdmi_all_bpp,
+				      hdmi_max_chunk_bytes);
+}
+
+void
+intel_dp_pcon_dsc_configure(struct intel_dp *intel_dp,
+			    const struct intel_crtc_state *crtc_state)
+{
+	u8 pps_param[6];
+	int slice_height;
+	int slice_width;
+	int num_slices;
+	int bits_per_pixel;
+	int ret;
+	struct intel_connector *intel_connector = intel_dp->attached_connector;
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	struct drm_connector *connector;
+	bool hdmi_is_dsc_1_2;
+
+	if (!intel_dp_is_hdmi_2_1_sink(intel_dp))
+		return;
+
+	if (!intel_connector)
+		return;
+	connector = &intel_connector->base;
+	hdmi_is_dsc_1_2 = connector->display_info.hdmi.dsc_cap.v_1p2;
+
+	if (!drm_dp_pcon_enc_is_dsc_1_2(intel_dp->pcon_dsc_dpcd) ||
+	    !hdmi_is_dsc_1_2)
+		return;
+
+	slice_height = intel_dp_pcon_dsc_enc_slice_height(crtc_state);
+	if (!slice_height)
+		return;
+
+	num_slices = intel_dp_pcon_dsc_enc_slices(intel_dp, crtc_state);
+	if (!num_slices)
+		return;
+
+	slice_width = DIV_ROUND_UP(crtc_state->hw.adjusted_mode.hdisplay,
+				   num_slices);
+
+	bits_per_pixel = intel_dp_pcon_dsc_enc_bpp(intel_dp, crtc_state,
+						   num_slices, slice_width);
+	if (!bits_per_pixel)
+		return;
+
+	pps_param[0] = slice_height & 0xFF;
+	pps_param[1] = slice_height >> 8;
+	pps_param[2] = slice_width & 0xFF;
+	pps_param[3] = slice_width >> 8;
+	pps_param[4] = bits_per_pixel & 0xFF;
+	pps_param[5] = (bits_per_pixel >> 8) & 0x3;
+
+	ret = drm_dp_pcon_pps_override_param(&intel_dp->aux, pps_param);
+	if (ret < 0)
+		drm_dbg_kms(&i915->drm, "Failed to set pcon DSC\n");
+}
+
+void intel_dp_configure_protocol_converter(struct intel_dp *intel_dp,
+					   const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	u8 tmp;
+
+	if (intel_dp->dpcd[DP_DPCD_REV] < 0x13)
+		return;
+
+	if (!drm_dp_is_branch(intel_dp->dpcd))
+		return;
+
+	tmp = intel_dp->has_hdmi_sink ?
+		DP_HDMI_DVI_OUTPUT_CONFIG : 0;
+
+	if (drm_dp_dpcd_writeb(&intel_dp->aux,
+			       DP_PROTOCOL_CONVERTER_CONTROL_0, tmp) != 1)
+		drm_dbg_kms(&i915->drm, "Failed to %s protocol converter HDMI mode\n",
+			    str_enable_disable(intel_dp->has_hdmi_sink));
+
+	tmp = crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR444 &&
+		intel_dp->dfp.ycbcr_444_to_420 ? DP_CONVERSION_TO_YCBCR420_ENABLE : 0;
+
+	if (drm_dp_dpcd_writeb(&intel_dp->aux,
+			       DP_PROTOCOL_CONVERTER_CONTROL_1, tmp) != 1)
+		drm_dbg_kms(&i915->drm,
+			    "Failed to %s protocol converter YCbCr 4:2:0 conversion mode\n",
+			    str_enable_disable(intel_dp->dfp.ycbcr_444_to_420));
+
+	tmp = intel_dp->dfp.rgb_to_ycbcr ?
+		DP_CONVERSION_BT709_RGB_YCBCR_ENABLE : 0;
+
+	if (drm_dp_pcon_convert_rgb_to_ycbcr(&intel_dp->aux, tmp) < 0)
+		drm_dbg_kms(&i915->drm,
+			   "Failed to %s protocol converter RGB->YCbCr conversion mode\n",
+			   str_enable_disable(tmp));
+}
+
+
+bool intel_dp_get_colorimetry_status(struct intel_dp *intel_dp)
+{
+	u8 dprx = 0;
+
+	if (drm_dp_dpcd_readb(&intel_dp->aux, DP_DPRX_FEATURE_ENUMERATION_LIST,
+			      &dprx) != 1)
+		return false;
+	return dprx & DP_VSC_SDP_EXT_FOR_COLORIMETRY_SUPPORTED;
+}
+
+static void intel_dp_get_dsc_sink_cap(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+
+	/*
+	 * Clear the cached register set to avoid using stale values
+	 * for the sinks that do not support DSC.
+	 */
+	memset(intel_dp->dsc_dpcd, 0, sizeof(intel_dp->dsc_dpcd));
+
+	/* Clear fec_capable to avoid using stale values */
+	intel_dp->fec_capable = 0;
+
+	/* Cache the DSC DPCD if eDP or DP rev >= 1.4 */
+	if (intel_dp->dpcd[DP_DPCD_REV] >= 0x14 ||
+	    intel_dp->edp_dpcd[0] >= DP_EDP_14) {
+		if (drm_dp_dpcd_read(&intel_dp->aux, DP_DSC_SUPPORT,
+				     intel_dp->dsc_dpcd,
+				     sizeof(intel_dp->dsc_dpcd)) < 0)
+			drm_err(&i915->drm,
+				"Failed to read DPCD register 0x%x\n",
+				DP_DSC_SUPPORT);
+
+		drm_dbg_kms(&i915->drm, "DSC DPCD: %*ph\n",
+			    (int)sizeof(intel_dp->dsc_dpcd),
+			    intel_dp->dsc_dpcd);
+
+		/* FEC is supported only on DP 1.4 */
+		if (!intel_dp_is_edp(intel_dp) &&
+		    drm_dp_dpcd_readb(&intel_dp->aux, DP_FEC_CAPABILITY,
+				      &intel_dp->fec_capable) < 0)
+			drm_err(&i915->drm,
+				"Failed to read FEC DPCD register\n");
+
+		drm_dbg_kms(&i915->drm, "FEC CAPABILITY: %x\n",
+			    intel_dp->fec_capable);
+	}
+}
+
+static void intel_edp_mso_mode_fixup(struct intel_connector *connector,
+				     struct drm_display_mode *mode)
+{
+	struct intel_dp *intel_dp = intel_attached_dp(connector);
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+	int n = intel_dp->mso_link_count;
+	int overlap = intel_dp->mso_pixel_overlap;
+
+	if (!mode || !n)
+		return;
+
+	mode->hdisplay = (mode->hdisplay - overlap) * n;
+	mode->hsync_start = (mode->hsync_start - overlap) * n;
+	mode->hsync_end = (mode->hsync_end - overlap) * n;
+	mode->htotal = (mode->htotal - overlap) * n;
+	mode->clock *= n;
+
+	drm_mode_set_name(mode);
+
+	drm_dbg_kms(&i915->drm,
+		    "[CONNECTOR:%d:%s] using generated MSO mode: " DRM_MODE_FMT "\n",
+		    connector->base.base.id, connector->base.name,
+		    DRM_MODE_ARG(mode));
+}
+
+void intel_edp_fixup_vbt_bpp(struct intel_encoder *encoder, int pipe_bpp)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	struct intel_connector *connector = intel_dp->attached_connector;
+
+	if (connector->panel.vbt.edp.bpp && pipe_bpp > connector->panel.vbt.edp.bpp) {
+		/*
+		 * This is a big fat ugly hack.
+		 *
+		 * Some machines in UEFI boot mode provide us a VBT that has 18
+		 * bpp and 1.62 GHz link bandwidth for eDP, which for reasons
+		 * unknown we fail to light up. Yet the same BIOS boots up with
+		 * 24 bpp and 2.7 GHz link. Use the same bpp as the BIOS uses as
+		 * max, not what it tells us to use.
+		 *
+		 * Note: This will still be broken if the eDP panel is not lit
+		 * up by the BIOS, and thus we can't get the mode at module
+		 * load.
+		 */
+		drm_dbg_kms(&dev_priv->drm,
+			    "pipe has %d bpp for eDP panel, overriding BIOS-provided max %d bpp\n",
+			    pipe_bpp, connector->panel.vbt.edp.bpp);
+		connector->panel.vbt.edp.bpp = pipe_bpp;
+	}
+}
+
+static void intel_edp_mso_init(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	struct intel_connector *connector = intel_dp->attached_connector;
+	struct drm_display_info *info = &connector->base.display_info;
+	u8 mso;
+
+	if (intel_dp->edp_dpcd[0] < DP_EDP_14)
+		return;
+
+	if (drm_dp_dpcd_readb(&intel_dp->aux, DP_EDP_MSO_LINK_CAPABILITIES, &mso) != 1) {
+		drm_err(&i915->drm, "Failed to read MSO cap\n");
+		return;
+	}
+
+	/* Valid configurations are SST or MSO 2x1, 2x2, 4x1 */
+	mso &= DP_EDP_MSO_NUMBER_OF_LINKS_MASK;
+	if (mso % 2 || mso > drm_dp_max_lane_count(intel_dp->dpcd)) {
+		drm_err(&i915->drm, "Invalid MSO link count cap %u\n", mso);
+		mso = 0;
+	}
+
+	if (mso) {
+		drm_dbg_kms(&i915->drm, "Sink MSO %ux%u configuration, pixel overlap %u\n",
+			    mso, drm_dp_max_lane_count(intel_dp->dpcd) / mso,
+			    info->mso_pixel_overlap);
+		if (!HAS_MSO(i915)) {
+			drm_err(&i915->drm, "No source MSO support, disabling\n");
+			mso = 0;
+		}
+	}
+
+	intel_dp->mso_link_count = mso;
+	intel_dp->mso_pixel_overlap = mso ? info->mso_pixel_overlap : 0;
+}
+
+static bool
+intel_edp_init_dpcd(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv =
+		to_i915(dp_to_dig_port(intel_dp)->base.base.dev);
+
+	/* this function is meant to be called only once */
+	drm_WARN_ON(&dev_priv->drm, intel_dp->dpcd[DP_DPCD_REV] != 0);
+
+	if (drm_dp_read_dpcd_caps(&intel_dp->aux, intel_dp->dpcd) != 0)
+		return false;
+
+	drm_dp_read_desc(&intel_dp->aux, &intel_dp->desc,
+			 drm_dp_is_branch(intel_dp->dpcd));
+
+	/*
+	 * Read the eDP display control registers.
+	 *
+	 * Do this independent of DP_DPCD_DISPLAY_CONTROL_CAPABLE bit in
+	 * DP_EDP_CONFIGURATION_CAP, because some buggy displays do not have it
+	 * set, but require eDP 1.4+ detection (e.g. for supported link rates
+	 * method). The display control registers should read zero if they're
+	 * not supported anyway.
+	 */
+	if (drm_dp_dpcd_read(&intel_dp->aux, DP_EDP_DPCD_REV,
+			     intel_dp->edp_dpcd, sizeof(intel_dp->edp_dpcd)) ==
+			     sizeof(intel_dp->edp_dpcd)) {
+		drm_dbg_kms(&dev_priv->drm, "eDP DPCD: %*ph\n",
+			    (int)sizeof(intel_dp->edp_dpcd),
+			    intel_dp->edp_dpcd);
+
+		intel_dp->use_max_params = intel_dp->edp_dpcd[0] < DP_EDP_14;
+	}
+
+	/*
+	 * This has to be called after intel_dp->edp_dpcd is filled, PSR checks
+	 * for SET_POWER_CAPABLE bit in intel_dp->edp_dpcd[1]
+	 */
+	intel_psr_init_dpcd(intel_dp);
+
+	/* Clear the default sink rates */
+	intel_dp->num_sink_rates = 0;
+
+	/* Read the eDP 1.4+ supported link rates. */
+	if (intel_dp->edp_dpcd[0] >= DP_EDP_14) {
+		__le16 sink_rates[DP_MAX_SUPPORTED_RATES];
+		int i;
+
+		drm_dp_dpcd_read(&intel_dp->aux, DP_SUPPORTED_LINK_RATES,
+				sink_rates, sizeof(sink_rates));
+
+		for (i = 0; i < ARRAY_SIZE(sink_rates); i++) {
+			int val = le16_to_cpu(sink_rates[i]);
+
+			if (val == 0)
+				break;
+
+			/* Value read multiplied by 200kHz gives the per-lane
+			 * link rate in kHz. The source rates are, however,
+			 * stored in terms of LS_Clk kHz. The full conversion
+			 * back to symbols is
+			 * (val * 200kHz)*(8/10 ch. encoding)*(1/8 bit to Byte)
+			 */
+			intel_dp->sink_rates[i] = (val * 200) / 10;
+		}
+		intel_dp->num_sink_rates = i;
+	}
+
+	/*
+	 * Use DP_LINK_RATE_SET if DP_SUPPORTED_LINK_RATES are available,
+	 * default to DP_MAX_LINK_RATE and DP_LINK_BW_SET otherwise.
+	 */
+	if (intel_dp->num_sink_rates)
+		intel_dp->use_rate_select = true;
+	else
+		intel_dp_set_sink_rates(intel_dp);
+	intel_dp_set_max_sink_lane_count(intel_dp);
+
+	/* Read the eDP DSC DPCD registers */
+	if (DISPLAY_VER(dev_priv) >= 10)
+		intel_dp_get_dsc_sink_cap(intel_dp);
+
+	/*
+	 * If needed, program our source OUI so we can make various Intel-specific AUX services
+	 * available (such as HDR backlight controls)
+	 */
+	intel_edp_init_source_oui(intel_dp, true);
+
+	return true;
+}
+
+static bool
+intel_dp_has_sink_count(struct intel_dp *intel_dp)
+{
+	if (!intel_dp->attached_connector)
+		return false;
+
+	return drm_dp_read_sink_count_cap(&intel_dp->attached_connector->base,
+					  intel_dp->dpcd,
+					  &intel_dp->desc);
+}
+
+static bool
+intel_dp_get_dpcd(struct intel_dp *intel_dp)
+{
+	int ret;
+
+	if (intel_dp_init_lttpr_and_dprx_caps(intel_dp) < 0)
+		return false;
+
+	/*
+	 * Don't clobber cached eDP rates. Also skip re-reading
+	 * the OUI/ID since we know it won't change.
+	 */
+	if (!intel_dp_is_edp(intel_dp)) {
+		drm_dp_read_desc(&intel_dp->aux, &intel_dp->desc,
+				 drm_dp_is_branch(intel_dp->dpcd));
+
+		intel_dp_set_sink_rates(intel_dp);
+		intel_dp_set_max_sink_lane_count(intel_dp);
+		intel_dp_set_common_rates(intel_dp);
+	}
+
+	if (intel_dp_has_sink_count(intel_dp)) {
+		ret = drm_dp_read_sink_count(&intel_dp->aux);
+		if (ret < 0)
+			return false;
+
+		/*
+		 * Sink count can change between short pulse hpd hence
+		 * a member variable in intel_dp will track any changes
+		 * between short pulse interrupts.
+		 */
+		intel_dp->sink_count = ret;
+
+		/*
+		 * SINK_COUNT == 0 and DOWNSTREAM_PORT_PRESENT == 1 implies that
+		 * a dongle is present but no display. Unless we require to know
+		 * if a dongle is present or not, we don't need to update
+		 * downstream port information. So, an early return here saves
+		 * time from performing other operations which are not required.
+		 */
+		if (!intel_dp->sink_count)
+			return false;
+	}
+
+	return drm_dp_read_downstream_info(&intel_dp->aux, intel_dp->dpcd,
+					   intel_dp->downstream_ports) == 0;
+}
+
+static bool
+intel_dp_can_mst(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+
+	return i915->params.enable_dp_mst &&
+		intel_dp_mst_source_support(intel_dp) &&
+		drm_dp_read_mst_cap(&intel_dp->aux, intel_dp->dpcd);
+}
+
+static void
+intel_dp_configure_mst(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	struct intel_encoder *encoder =
+		&dp_to_dig_port(intel_dp)->base;
+	bool sink_can_mst = drm_dp_read_mst_cap(&intel_dp->aux, intel_dp->dpcd);
+
+	drm_dbg_kms(&i915->drm,
+		    "[ENCODER:%d:%s] MST support: port: %s, sink: %s, modparam: %s\n",
+		    encoder->base.base.id, encoder->base.name,
+		    str_yes_no(intel_dp_mst_source_support(intel_dp)),
+		    str_yes_no(sink_can_mst),
+		    str_yes_no(i915->params.enable_dp_mst));
+
+	if (!intel_dp_mst_source_support(intel_dp))
+		return;
+
+	intel_dp->is_mst = sink_can_mst &&
+		i915->params.enable_dp_mst;
+
+	drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr,
+					intel_dp->is_mst);
+}
+
+static bool
+intel_dp_get_sink_irq_esi(struct intel_dp *intel_dp, u8 *esi)
+{
+	return drm_dp_dpcd_read(&intel_dp->aux, DP_SINK_COUNT_ESI, esi, 4) == 4;
+}
+
+static bool intel_dp_ack_sink_irq_esi(struct intel_dp *intel_dp, u8 esi[4])
+{
+	int retry;
+
+	for (retry = 0; retry < 3; retry++) {
+		if (drm_dp_dpcd_write(&intel_dp->aux, DP_SINK_COUNT_ESI + 1,
+				      &esi[1], 3) == 3)
+			return true;
+	}
+
+	return false;
+}
+
+bool
+intel_dp_needs_vsc_sdp(const struct intel_crtc_state *crtc_state,
+		       const struct drm_connector_state *conn_state)
+{
+	/*
+	 * As per DP 1.4a spec section 2.2.4.3 [MSA Field for Indication
+	 * of Color Encoding Format and Content Color Gamut], in order to
+	 * sending YCBCR 420 or HDR BT.2020 signals we should use DP VSC SDP.
+	 */
+	if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420)
+		return true;
+
+	switch (conn_state->colorspace) {
+	case DRM_MODE_COLORIMETRY_SYCC_601:
+	case DRM_MODE_COLORIMETRY_OPYCC_601:
+	case DRM_MODE_COLORIMETRY_BT2020_YCC:
+	case DRM_MODE_COLORIMETRY_BT2020_RGB:
+	case DRM_MODE_COLORIMETRY_BT2020_CYCC:
+		return true;
+	default:
+		break;
+	}
+
+	return false;
+}
+
+static ssize_t intel_dp_vsc_sdp_pack(const struct drm_dp_vsc_sdp *vsc,
+				     struct dp_sdp *sdp, size_t size)
+{
+	size_t length = sizeof(struct dp_sdp);
+
+	if (size < length)
+		return -ENOSPC;
+
+	memset(sdp, 0, size);
+
+	/*
+	 * Prepare VSC Header for SU as per DP 1.4a spec, Table 2-119
+	 * VSC SDP Header Bytes
+	 */
+	sdp->sdp_header.HB0 = 0; /* Secondary-Data Packet ID = 0 */
+	sdp->sdp_header.HB1 = vsc->sdp_type; /* Secondary-data Packet Type */
+	sdp->sdp_header.HB2 = vsc->revision; /* Revision Number */
+	sdp->sdp_header.HB3 = vsc->length; /* Number of Valid Data Bytes */
+
+	/*
+	 * Only revision 0x5 supports Pixel Encoding/Colorimetry Format as
+	 * per DP 1.4a spec.
+	 */
+	if (vsc->revision != 0x5)
+		goto out;
+
+	/* VSC SDP Payload for DB16 through DB18 */
+	/* Pixel Encoding and Colorimetry Formats  */
+	sdp->db[16] = (vsc->pixelformat & 0xf) << 4; /* DB16[7:4] */
+	sdp->db[16] |= vsc->colorimetry & 0xf; /* DB16[3:0] */
+
+	switch (vsc->bpc) {
+	case 6:
+		/* 6bpc: 0x0 */
+		break;
+	case 8:
+		sdp->db[17] = 0x1; /* DB17[3:0] */
+		break;
+	case 10:
+		sdp->db[17] = 0x2;
+		break;
+	case 12:
+		sdp->db[17] = 0x3;
+		break;
+	case 16:
+		sdp->db[17] = 0x4;
+		break;
+	default:
+		MISSING_CASE(vsc->bpc);
+		break;
+	}
+	/* Dynamic Range and Component Bit Depth */
+	if (vsc->dynamic_range == DP_DYNAMIC_RANGE_CTA)
+		sdp->db[17] |= 0x80;  /* DB17[7] */
+
+	/* Content Type */
+	sdp->db[18] = vsc->content_type & 0x7;
+
+out:
+	return length;
+}
+
+static ssize_t
+intel_dp_hdr_metadata_infoframe_sdp_pack(struct drm_i915_private *i915,
+					 const struct hdmi_drm_infoframe *drm_infoframe,
+					 struct dp_sdp *sdp,
+					 size_t size)
+{
+	size_t length = sizeof(struct dp_sdp);
+	const int infoframe_size = HDMI_INFOFRAME_HEADER_SIZE + HDMI_DRM_INFOFRAME_SIZE;
+	unsigned char buf[HDMI_INFOFRAME_HEADER_SIZE + HDMI_DRM_INFOFRAME_SIZE];
+	ssize_t len;
+
+	if (size < length)
+		return -ENOSPC;
+
+	memset(sdp, 0, size);
+
+	len = hdmi_drm_infoframe_pack_only(drm_infoframe, buf, sizeof(buf));
+	if (len < 0) {
+		drm_dbg_kms(&i915->drm, "buffer size is smaller than hdr metadata infoframe\n");
+		return -ENOSPC;
+	}
+
+	if (len != infoframe_size) {
+		drm_dbg_kms(&i915->drm, "wrong static hdr metadata size\n");
+		return -ENOSPC;
+	}
+
+	/*
+	 * Set up the infoframe sdp packet for HDR static metadata.
+	 * Prepare VSC Header for SU as per DP 1.4a spec,
+	 * Table 2-100 and Table 2-101
+	 */
+
+	/* Secondary-Data Packet ID, 00h for non-Audio INFOFRAME */
+	sdp->sdp_header.HB0 = 0;
+	/*
+	 * Packet Type 80h + Non-audio INFOFRAME Type value
+	 * HDMI_INFOFRAME_TYPE_DRM: 0x87
+	 * - 80h + Non-audio INFOFRAME Type value
+	 * - InfoFrame Type: 0x07
+	 *    [CTA-861-G Table-42 Dynamic Range and Mastering InfoFrame]
+	 */
+	sdp->sdp_header.HB1 = drm_infoframe->type;
+	/*
+	 * Least Significant Eight Bits of (Data Byte Count – 1)
+	 * infoframe_size - 1
+	 */
+	sdp->sdp_header.HB2 = 0x1D;
+	/* INFOFRAME SDP Version Number */
+	sdp->sdp_header.HB3 = (0x13 << 2);
+	/* CTA Header Byte 2 (INFOFRAME Version Number) */
+	sdp->db[0] = drm_infoframe->version;
+	/* CTA Header Byte 3 (Length of INFOFRAME): HDMI_DRM_INFOFRAME_SIZE */
+	sdp->db[1] = drm_infoframe->length;
+	/*
+	 * Copy HDMI_DRM_INFOFRAME_SIZE size from a buffer after
+	 * HDMI_INFOFRAME_HEADER_SIZE
+	 */
+	BUILD_BUG_ON(sizeof(sdp->db) < HDMI_DRM_INFOFRAME_SIZE + 2);
+	memcpy(&sdp->db[2], &buf[HDMI_INFOFRAME_HEADER_SIZE],
+	       HDMI_DRM_INFOFRAME_SIZE);
+
+	/*
+	 * Size of DP infoframe sdp packet for HDR static metadata consists of
+	 * - DP SDP Header(struct dp_sdp_header): 4 bytes
+	 * - Two Data Blocks: 2 bytes
+	 *    CTA Header Byte2 (INFOFRAME Version Number)
+	 *    CTA Header Byte3 (Length of INFOFRAME)
+	 * - HDMI_DRM_INFOFRAME_SIZE: 26 bytes
+	 *
+	 * Prior to GEN11's GMP register size is identical to DP HDR static metadata
+	 * infoframe size. But GEN11+ has larger than that size, write_infoframe
+	 * will pad rest of the size.
+	 */
+	return sizeof(struct dp_sdp_header) + 2 + HDMI_DRM_INFOFRAME_SIZE;
+}
+
+static void intel_write_dp_sdp(struct intel_encoder *encoder,
+			       const struct intel_crtc_state *crtc_state,
+			       unsigned int type)
+{
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct dp_sdp sdp = {};
+	ssize_t len;
+
+	if ((crtc_state->infoframes.enable &
+	     intel_hdmi_infoframe_enable(type)) == 0)
+		return;
+
+	switch (type) {
+	case DP_SDP_VSC:
+		len = intel_dp_vsc_sdp_pack(&crtc_state->infoframes.vsc, &sdp,
+					    sizeof(sdp));
+		break;
+	case HDMI_PACKET_TYPE_GAMUT_METADATA:
+		len = intel_dp_hdr_metadata_infoframe_sdp_pack(dev_priv,
+							       &crtc_state->infoframes.drm.drm,
+							       &sdp, sizeof(sdp));
+		break;
+	default:
+		MISSING_CASE(type);
+		return;
+	}
+
+	if (drm_WARN_ON(&dev_priv->drm, len < 0))
+		return;
+
+	dig_port->write_infoframe(encoder, crtc_state, type, &sdp, len);
+}
+
+void intel_write_dp_vsc_sdp(struct intel_encoder *encoder,
+			    const struct intel_crtc_state *crtc_state,
+			    const struct drm_dp_vsc_sdp *vsc)
+{
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct dp_sdp sdp = {};
+	ssize_t len;
+
+	len = intel_dp_vsc_sdp_pack(vsc, &sdp, sizeof(sdp));
+
+	if (drm_WARN_ON(&dev_priv->drm, len < 0))
+		return;
+
+	dig_port->write_infoframe(encoder, crtc_state, DP_SDP_VSC,
+					&sdp, len);
+}
+
+void intel_dp_set_infoframes(struct intel_encoder *encoder,
+			     bool enable,
+			     const struct intel_crtc_state *crtc_state,
+			     const struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	i915_reg_t reg = HSW_TVIDEO_DIP_CTL(crtc_state->cpu_transcoder);
+	u32 dip_enable = VIDEO_DIP_ENABLE_AVI_HSW | VIDEO_DIP_ENABLE_GCP_HSW |
+			 VIDEO_DIP_ENABLE_VS_HSW | VIDEO_DIP_ENABLE_GMP_HSW |
+			 VIDEO_DIP_ENABLE_SPD_HSW | VIDEO_DIP_ENABLE_DRM_GLK;
+	u32 val = intel_de_read(dev_priv, reg) & ~dip_enable;
+
+	/* TODO: Add DSC case (DIP_ENABLE_PPS) */
+	/* When PSR is enabled, this routine doesn't disable VSC DIP */
+	if (!crtc_state->has_psr)
+		val &= ~VIDEO_DIP_ENABLE_VSC_HSW;
+
+	intel_de_write(dev_priv, reg, val);
+	intel_de_posting_read(dev_priv, reg);
+
+	if (!enable)
+		return;
+
+	/* When PSR is enabled, VSC SDP is handled by PSR routine */
+	if (!crtc_state->has_psr)
+		intel_write_dp_sdp(encoder, crtc_state, DP_SDP_VSC);
+
+	intel_write_dp_sdp(encoder, crtc_state, HDMI_PACKET_TYPE_GAMUT_METADATA);
+}
+
+static int intel_dp_vsc_sdp_unpack(struct drm_dp_vsc_sdp *vsc,
+				   const void *buffer, size_t size)
+{
+	const struct dp_sdp *sdp = buffer;
+
+	if (size < sizeof(struct dp_sdp))
+		return -EINVAL;
+
+	memset(vsc, 0, sizeof(*vsc));
+
+	if (sdp->sdp_header.HB0 != 0)
+		return -EINVAL;
+
+	if (sdp->sdp_header.HB1 != DP_SDP_VSC)
+		return -EINVAL;
+
+	vsc->sdp_type = sdp->sdp_header.HB1;
+	vsc->revision = sdp->sdp_header.HB2;
+	vsc->length = sdp->sdp_header.HB3;
+
+	if ((sdp->sdp_header.HB2 == 0x2 && sdp->sdp_header.HB3 == 0x8) ||
+	    (sdp->sdp_header.HB2 == 0x4 && sdp->sdp_header.HB3 == 0xe)) {
+		/*
+		 * - HB2 = 0x2, HB3 = 0x8
+		 *   VSC SDP supporting 3D stereo + PSR
+		 * - HB2 = 0x4, HB3 = 0xe
+		 *   VSC SDP supporting 3D stereo + PSR2 with Y-coordinate of
+		 *   first scan line of the SU region (applies to eDP v1.4b
+		 *   and higher).
+		 */
+		return 0;
+	} else if (sdp->sdp_header.HB2 == 0x5 && sdp->sdp_header.HB3 == 0x13) {
+		/*
+		 * - HB2 = 0x5, HB3 = 0x13
+		 *   VSC SDP supporting 3D stereo + PSR2 + Pixel Encoding/Colorimetry
+		 *   Format.
+		 */
+		vsc->pixelformat = (sdp->db[16] >> 4) & 0xf;
+		vsc->colorimetry = sdp->db[16] & 0xf;
+		vsc->dynamic_range = (sdp->db[17] >> 7) & 0x1;
+
+		switch (sdp->db[17] & 0x7) {
+		case 0x0:
+			vsc->bpc = 6;
+			break;
+		case 0x1:
+			vsc->bpc = 8;
+			break;
+		case 0x2:
+			vsc->bpc = 10;
+			break;
+		case 0x3:
+			vsc->bpc = 12;
+			break;
+		case 0x4:
+			vsc->bpc = 16;
+			break;
+		default:
+			MISSING_CASE(sdp->db[17] & 0x7);
+			return -EINVAL;
+		}
+
+		vsc->content_type = sdp->db[18] & 0x7;
+	} else {
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int
+intel_dp_hdr_metadata_infoframe_sdp_unpack(struct hdmi_drm_infoframe *drm_infoframe,
+					   const void *buffer, size_t size)
+{
+	int ret;
+
+	const struct dp_sdp *sdp = buffer;
+
+	if (size < sizeof(struct dp_sdp))
+		return -EINVAL;
+
+	if (sdp->sdp_header.HB0 != 0)
+		return -EINVAL;
+
+	if (sdp->sdp_header.HB1 != HDMI_INFOFRAME_TYPE_DRM)
+		return -EINVAL;
+
+	/*
+	 * Least Significant Eight Bits of (Data Byte Count – 1)
+	 * 1Dh (i.e., Data Byte Count = 30 bytes).
+	 */
+	if (sdp->sdp_header.HB2 != 0x1D)
+		return -EINVAL;
+
+	/* Most Significant Two Bits of (Data Byte Count – 1), Clear to 00b. */
+	if ((sdp->sdp_header.HB3 & 0x3) != 0)
+		return -EINVAL;
+
+	/* INFOFRAME SDP Version Number */
+	if (((sdp->sdp_header.HB3 >> 2) & 0x3f) != 0x13)
+		return -EINVAL;
+
+	/* CTA Header Byte 2 (INFOFRAME Version Number) */
+	if (sdp->db[0] != 1)
+		return -EINVAL;
+
+	/* CTA Header Byte 3 (Length of INFOFRAME): HDMI_DRM_INFOFRAME_SIZE */
+	if (sdp->db[1] != HDMI_DRM_INFOFRAME_SIZE)
+		return -EINVAL;
+
+	ret = hdmi_drm_infoframe_unpack_only(drm_infoframe, &sdp->db[2],
+					     HDMI_DRM_INFOFRAME_SIZE);
+
+	return ret;
+}
+
+static void intel_read_dp_vsc_sdp(struct intel_encoder *encoder,
+				  struct intel_crtc_state *crtc_state,
+				  struct drm_dp_vsc_sdp *vsc)
+{
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	unsigned int type = DP_SDP_VSC;
+	struct dp_sdp sdp = {};
+	int ret;
+
+	/* When PSR is enabled, VSC SDP is handled by PSR routine */
+	if (crtc_state->has_psr)
+		return;
+
+	if ((crtc_state->infoframes.enable &
+	     intel_hdmi_infoframe_enable(type)) == 0)
+		return;
+
+	dig_port->read_infoframe(encoder, crtc_state, type, &sdp, sizeof(sdp));
+
+	ret = intel_dp_vsc_sdp_unpack(vsc, &sdp, sizeof(sdp));
+
+	if (ret)
+		drm_dbg_kms(&dev_priv->drm, "Failed to unpack DP VSC SDP\n");
+}
+
+static void intel_read_dp_hdr_metadata_infoframe_sdp(struct intel_encoder *encoder,
+						     struct intel_crtc_state *crtc_state,
+						     struct hdmi_drm_infoframe *drm_infoframe)
+{
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	unsigned int type = HDMI_PACKET_TYPE_GAMUT_METADATA;
+	struct dp_sdp sdp = {};
+	int ret;
+
+	if ((crtc_state->infoframes.enable &
+	    intel_hdmi_infoframe_enable(type)) == 0)
+		return;
+
+	dig_port->read_infoframe(encoder, crtc_state, type, &sdp,
+				 sizeof(sdp));
+
+	ret = intel_dp_hdr_metadata_infoframe_sdp_unpack(drm_infoframe, &sdp,
+							 sizeof(sdp));
+
+	if (ret)
+		drm_dbg_kms(&dev_priv->drm,
+			    "Failed to unpack DP HDR Metadata Infoframe SDP\n");
+}
+
+void intel_read_dp_sdp(struct intel_encoder *encoder,
+		       struct intel_crtc_state *crtc_state,
+		       unsigned int type)
+{
+	switch (type) {
+	case DP_SDP_VSC:
+		intel_read_dp_vsc_sdp(encoder, crtc_state,
+				      &crtc_state->infoframes.vsc);
+		break;
+	case HDMI_PACKET_TYPE_GAMUT_METADATA:
+		intel_read_dp_hdr_metadata_infoframe_sdp(encoder, crtc_state,
+							 &crtc_state->infoframes.drm.drm);
+		break;
+	default:
+		MISSING_CASE(type);
+		break;
+	}
+}
+
+static u8 intel_dp_autotest_link_training(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	int status = 0;
+	int test_link_rate;
+	u8 test_lane_count, test_link_bw;
+	/* (DP CTS 1.2)
+	 * 4.3.1.11
+	 */
+	/* Read the TEST_LANE_COUNT and TEST_LINK_RTAE fields (DP CTS 3.1.4) */
+	status = drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_LANE_COUNT,
+				   &test_lane_count);
+
+	if (status <= 0) {
+		drm_dbg_kms(&i915->drm, "Lane count read failed\n");
+		return DP_TEST_NAK;
+	}
+	test_lane_count &= DP_MAX_LANE_COUNT_MASK;
+
+	status = drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_LINK_RATE,
+				   &test_link_bw);
+	if (status <= 0) {
+		drm_dbg_kms(&i915->drm, "Link Rate read failed\n");
+		return DP_TEST_NAK;
+	}
+	test_link_rate = drm_dp_bw_code_to_link_rate(test_link_bw);
+
+	/* Validate the requested link rate and lane count */
+	if (!intel_dp_link_params_valid(intel_dp, test_link_rate,
+					test_lane_count))
+		return DP_TEST_NAK;
+
+	intel_dp->compliance.test_lane_count = test_lane_count;
+	intel_dp->compliance.test_link_rate = test_link_rate;
+
+	return DP_TEST_ACK;
+}
+
+static u8 intel_dp_autotest_video_pattern(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	u8 test_pattern;
+	u8 test_misc;
+	__be16 h_width, v_height;
+	int status = 0;
+
+	/* Read the TEST_PATTERN (DP CTS 3.1.5) */
+	status = drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_PATTERN,
+				   &test_pattern);
+	if (status <= 0) {
+		drm_dbg_kms(&i915->drm, "Test pattern read failed\n");
+		return DP_TEST_NAK;
+	}
+	if (test_pattern != DP_COLOR_RAMP)
+		return DP_TEST_NAK;
+
+	status = drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_H_WIDTH_HI,
+				  &h_width, 2);
+	if (status <= 0) {
+		drm_dbg_kms(&i915->drm, "H Width read failed\n");
+		return DP_TEST_NAK;
+	}
+
+	status = drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_V_HEIGHT_HI,
+				  &v_height, 2);
+	if (status <= 0) {
+		drm_dbg_kms(&i915->drm, "V Height read failed\n");
+		return DP_TEST_NAK;
+	}
+
+	status = drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_MISC0,
+				   &test_misc);
+	if (status <= 0) {
+		drm_dbg_kms(&i915->drm, "TEST MISC read failed\n");
+		return DP_TEST_NAK;
+	}
+	if ((test_misc & DP_TEST_COLOR_FORMAT_MASK) != DP_COLOR_FORMAT_RGB)
+		return DP_TEST_NAK;
+	if (test_misc & DP_TEST_DYNAMIC_RANGE_CEA)
+		return DP_TEST_NAK;
+	switch (test_misc & DP_TEST_BIT_DEPTH_MASK) {
+	case DP_TEST_BIT_DEPTH_6:
+		intel_dp->compliance.test_data.bpc = 6;
+		break;
+	case DP_TEST_BIT_DEPTH_8:
+		intel_dp->compliance.test_data.bpc = 8;
+		break;
+	default:
+		return DP_TEST_NAK;
+	}
+
+	intel_dp->compliance.test_data.video_pattern = test_pattern;
+	intel_dp->compliance.test_data.hdisplay = be16_to_cpu(h_width);
+	intel_dp->compliance.test_data.vdisplay = be16_to_cpu(v_height);
+	/* Set test active flag here so userspace doesn't interrupt things */
+	intel_dp->compliance.test_active = true;
+
+	return DP_TEST_ACK;
+}
+
+static u8 intel_dp_autotest_edid(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	u8 test_result = DP_TEST_ACK;
+	struct intel_connector *intel_connector = intel_dp->attached_connector;
+	struct drm_connector *connector = &intel_connector->base;
+
+	if (intel_connector->detect_edid == NULL ||
+	    connector->edid_corrupt ||
+	    intel_dp->aux.i2c_defer_count > 6) {
+		/* Check EDID read for NACKs, DEFERs and corruption
+		 * (DP CTS 1.2 Core r1.1)
+		 *    4.2.2.4 : Failed EDID read, I2C_NAK
+		 *    4.2.2.5 : Failed EDID read, I2C_DEFER
+		 *    4.2.2.6 : EDID corruption detected
+		 * Use failsafe mode for all cases
+		 */
+		if (intel_dp->aux.i2c_nack_count > 0 ||
+			intel_dp->aux.i2c_defer_count > 0)
+			drm_dbg_kms(&i915->drm,
+				    "EDID read had %d NACKs, %d DEFERs\n",
+				    intel_dp->aux.i2c_nack_count,
+				    intel_dp->aux.i2c_defer_count);
+		intel_dp->compliance.test_data.edid = INTEL_DP_RESOLUTION_FAILSAFE;
+	} else {
+		struct edid *block = intel_connector->detect_edid;
+
+		/* We have to write the checksum
+		 * of the last block read
+		 */
+		block += intel_connector->detect_edid->extensions;
+
+		if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_EDID_CHECKSUM,
+				       block->checksum) <= 0)
+			drm_dbg_kms(&i915->drm,
+				    "Failed to write EDID checksum\n");
+
+		test_result = DP_TEST_ACK | DP_TEST_EDID_CHECKSUM_WRITE;
+		intel_dp->compliance.test_data.edid = INTEL_DP_RESOLUTION_PREFERRED;
+	}
+
+	/* Set test active flag here so userspace doesn't interrupt things */
+	intel_dp->compliance.test_active = true;
+
+	return test_result;
+}
+
+static void intel_dp_phy_pattern_update(struct intel_dp *intel_dp,
+					const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv =
+			to_i915(dp_to_dig_port(intel_dp)->base.base.dev);
+	struct drm_dp_phy_test_params *data =
+			&intel_dp->compliance.test_data.phytest;
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	enum pipe pipe = crtc->pipe;
+	u32 pattern_val;
+
+	switch (data->phy_pattern) {
+	case DP_PHY_TEST_PATTERN_NONE:
+		drm_dbg_kms(&dev_priv->drm, "Disable Phy Test Pattern\n");
+		intel_de_write(dev_priv, DDI_DP_COMP_CTL(pipe), 0x0);
+		break;
+	case DP_PHY_TEST_PATTERN_D10_2:
+		drm_dbg_kms(&dev_priv->drm, "Set D10.2 Phy Test Pattern\n");
+		intel_de_write(dev_priv, DDI_DP_COMP_CTL(pipe),
+			       DDI_DP_COMP_CTL_ENABLE | DDI_DP_COMP_CTL_D10_2);
+		break;
+	case DP_PHY_TEST_PATTERN_ERROR_COUNT:
+		drm_dbg_kms(&dev_priv->drm, "Set Error Count Phy Test Pattern\n");
+		intel_de_write(dev_priv, DDI_DP_COMP_CTL(pipe),
+			       DDI_DP_COMP_CTL_ENABLE |
+			       DDI_DP_COMP_CTL_SCRAMBLED_0);
+		break;
+	case DP_PHY_TEST_PATTERN_PRBS7:
+		drm_dbg_kms(&dev_priv->drm, "Set PRBS7 Phy Test Pattern\n");
+		intel_de_write(dev_priv, DDI_DP_COMP_CTL(pipe),
+			       DDI_DP_COMP_CTL_ENABLE | DDI_DP_COMP_CTL_PRBS7);
+		break;
+	case DP_PHY_TEST_PATTERN_80BIT_CUSTOM:
+		/*
+		 * FIXME: Ideally pattern should come from DPCD 0x250. As
+		 * current firmware of DPR-100 could not set it, so hardcoding
+		 * now for complaince test.
+		 */
+		drm_dbg_kms(&dev_priv->drm,
+			    "Set 80Bit Custom Phy Test Pattern 0x3e0f83e0 0x0f83e0f8 0x0000f83e\n");
+		pattern_val = 0x3e0f83e0;
+		intel_de_write(dev_priv, DDI_DP_COMP_PAT(pipe, 0), pattern_val);
+		pattern_val = 0x0f83e0f8;
+		intel_de_write(dev_priv, DDI_DP_COMP_PAT(pipe, 1), pattern_val);
+		pattern_val = 0x0000f83e;
+		intel_de_write(dev_priv, DDI_DP_COMP_PAT(pipe, 2), pattern_val);
+		intel_de_write(dev_priv, DDI_DP_COMP_CTL(pipe),
+			       DDI_DP_COMP_CTL_ENABLE |
+			       DDI_DP_COMP_CTL_CUSTOM80);
+		break;
+	case DP_PHY_TEST_PATTERN_CP2520:
+		/*
+		 * FIXME: Ideally pattern should come from DPCD 0x24A. As
+		 * current firmware of DPR-100 could not set it, so hardcoding
+		 * now for complaince test.
+		 */
+		drm_dbg_kms(&dev_priv->drm, "Set HBR2 compliance Phy Test Pattern\n");
+		pattern_val = 0xFB;
+		intel_de_write(dev_priv, DDI_DP_COMP_CTL(pipe),
+			       DDI_DP_COMP_CTL_ENABLE | DDI_DP_COMP_CTL_HBR2 |
+			       pattern_val);
+		break;
+	default:
+		WARN(1, "Invalid Phy Test Pattern\n");
+	}
+}
+
+static void intel_dp_process_phy_request(struct intel_dp *intel_dp,
+					 const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	struct drm_dp_phy_test_params *data =
+		&intel_dp->compliance.test_data.phytest;
+	u8 link_status[DP_LINK_STATUS_SIZE];
+
+	if (drm_dp_dpcd_read_phy_link_status(&intel_dp->aux, DP_PHY_DPRX,
+					     link_status) < 0) {
+		drm_dbg_kms(&i915->drm, "failed to get link status\n");
+		return;
+	}
+
+	/* retrieve vswing & pre-emphasis setting */
+	intel_dp_get_adjust_train(intel_dp, crtc_state, DP_PHY_DPRX,
+				  link_status);
+
+	intel_dp_set_signal_levels(intel_dp, crtc_state, DP_PHY_DPRX);
+
+	intel_dp_phy_pattern_update(intel_dp, crtc_state);
+
+	drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_LANE0_SET,
+			  intel_dp->train_set, crtc_state->lane_count);
+
+	drm_dp_set_phy_test_pattern(&intel_dp->aux, data,
+				    intel_dp->dpcd[DP_DPCD_REV]);
+}
+
+static u8 intel_dp_autotest_phy_pattern(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	struct drm_dp_phy_test_params *data =
+		&intel_dp->compliance.test_data.phytest;
+
+	if (drm_dp_get_phy_test_pattern(&intel_dp->aux, data)) {
+		drm_dbg_kms(&i915->drm, "DP Phy Test pattern AUX read failure\n");
+		return DP_TEST_NAK;
+	}
+
+	/* Set test active flag here so userspace doesn't interrupt things */
+	intel_dp->compliance.test_active = true;
+
+	return DP_TEST_ACK;
+}
+
+static void intel_dp_handle_test_request(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	u8 response = DP_TEST_NAK;
+	u8 request = 0;
+	int status;
+
+	status = drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_REQUEST, &request);
+	if (status <= 0) {
+		drm_dbg_kms(&i915->drm,
+			    "Could not read test request from sink\n");
+		goto update_status;
+	}
+
+	switch (request) {
+	case DP_TEST_LINK_TRAINING:
+		drm_dbg_kms(&i915->drm, "LINK_TRAINING test requested\n");
+		response = intel_dp_autotest_link_training(intel_dp);
+		break;
+	case DP_TEST_LINK_VIDEO_PATTERN:
+		drm_dbg_kms(&i915->drm, "TEST_PATTERN test requested\n");
+		response = intel_dp_autotest_video_pattern(intel_dp);
+		break;
+	case DP_TEST_LINK_EDID_READ:
+		drm_dbg_kms(&i915->drm, "EDID test requested\n");
+		response = intel_dp_autotest_edid(intel_dp);
+		break;
+	case DP_TEST_LINK_PHY_TEST_PATTERN:
+		drm_dbg_kms(&i915->drm, "PHY_PATTERN test requested\n");
+		response = intel_dp_autotest_phy_pattern(intel_dp);
+		break;
+	default:
+		drm_dbg_kms(&i915->drm, "Invalid test request '%02x'\n",
+			    request);
+		break;
+	}
+
+	if (response & DP_TEST_ACK)
+		intel_dp->compliance.test_type = request;
+
+update_status:
+	status = drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_RESPONSE, response);
+	if (status <= 0)
+		drm_dbg_kms(&i915->drm,
+			    "Could not write test response to sink\n");
+}
+
+static bool intel_dp_link_ok(struct intel_dp *intel_dp,
+			     u8 link_status[DP_LINK_STATUS_SIZE])
+{
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	bool uhbr = intel_dp->link_rate >= 1000000;
+	bool ok;
+
+	if (uhbr)
+		ok = drm_dp_128b132b_lane_channel_eq_done(link_status,
+							  intel_dp->lane_count);
+	else
+		ok = drm_dp_channel_eq_ok(link_status, intel_dp->lane_count);
+
+	if (ok)
+		return true;
+
+	intel_dp_dump_link_status(intel_dp, DP_PHY_DPRX, link_status);
+	drm_dbg_kms(&i915->drm,
+		    "[ENCODER:%d:%s] %s link not ok, retraining\n",
+		    encoder->base.base.id, encoder->base.name,
+		    uhbr ? "128b/132b" : "8b/10b");
+
+	return false;
+}
+
+static void
+intel_dp_mst_hpd_irq(struct intel_dp *intel_dp, u8 *esi, u8 *ack)
+{
+	bool handled = false;
+
+	drm_dp_mst_hpd_irq_handle_event(&intel_dp->mst_mgr, esi, ack, &handled);
+
+	if (esi[1] & DP_CP_IRQ) {
+		intel_hdcp_handle_cp_irq(intel_dp->attached_connector);
+		ack[1] |= DP_CP_IRQ;
+	}
+}
+
+static bool intel_dp_mst_link_status(struct intel_dp *intel_dp)
+{
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	u8 link_status[DP_LINK_STATUS_SIZE] = {};
+	const size_t esi_link_status_size = DP_LINK_STATUS_SIZE - 2;
+
+	if (drm_dp_dpcd_read(&intel_dp->aux, DP_LANE0_1_STATUS_ESI, link_status,
+			     esi_link_status_size) != esi_link_status_size) {
+		drm_err(&i915->drm,
+			"[ENCODER:%d:%s] Failed to read link status\n",
+			encoder->base.base.id, encoder->base.name);
+		return false;
+	}
+
+	return intel_dp_link_ok(intel_dp, link_status);
+}
+
+/**
+ * intel_dp_check_mst_status - service any pending MST interrupts, check link status
+ * @intel_dp: Intel DP struct
+ *
+ * Read any pending MST interrupts, call MST core to handle these and ack the
+ * interrupts. Check if the main and AUX link state is ok.
+ *
+ * Returns:
+ * - %true if pending interrupts were serviced (or no interrupts were
+ *   pending) w/o detecting an error condition.
+ * - %false if an error condition - like AUX failure or a loss of link - is
+ *   detected, which needs servicing from the hotplug work.
+ */
+static bool
+intel_dp_check_mst_status(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	bool link_ok = true;
+
+	drm_WARN_ON_ONCE(&i915->drm, intel_dp->active_mst_links < 0);
+
+	for (;;) {
+		u8 esi[4] = {};
+		u8 ack[4] = {};
+
+		if (!intel_dp_get_sink_irq_esi(intel_dp, esi)) {
+			drm_dbg_kms(&i915->drm,
+				    "failed to get ESI - device may have failed\n");
+			link_ok = false;
+
+			break;
+		}
+
+		drm_dbg_kms(&i915->drm, "DPRX ESI: %4ph\n", esi);
+
+		if (intel_dp->active_mst_links > 0 && link_ok &&
+		    esi[3] & LINK_STATUS_CHANGED) {
+			if (!intel_dp_mst_link_status(intel_dp))
+				link_ok = false;
+			ack[3] |= LINK_STATUS_CHANGED;
+		}
+
+		intel_dp_mst_hpd_irq(intel_dp, esi, ack);
+
+		if (!memchr_inv(ack, 0, sizeof(ack)))
+			break;
+
+		if (!intel_dp_ack_sink_irq_esi(intel_dp, ack))
+			drm_dbg_kms(&i915->drm, "Failed to ack ESI\n");
+
+		if (ack[1] & (DP_DOWN_REP_MSG_RDY | DP_UP_REQ_MSG_RDY))
+			drm_dp_mst_hpd_irq_send_new_request(&intel_dp->mst_mgr);
+	}
+
+	return link_ok;
+}
+
+static void
+intel_dp_handle_hdmi_link_status_change(struct intel_dp *intel_dp)
+{
+	bool is_active;
+	u8 buf = 0;
+
+	is_active = drm_dp_pcon_hdmi_link_active(&intel_dp->aux);
+	if (intel_dp->frl.is_trained && !is_active) {
+		if (drm_dp_dpcd_readb(&intel_dp->aux, DP_PCON_HDMI_LINK_CONFIG_1, &buf) < 0)
+			return;
+
+		buf &=  ~DP_PCON_ENABLE_HDMI_LINK;
+		if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_PCON_HDMI_LINK_CONFIG_1, buf) < 0)
+			return;
+
+		drm_dp_pcon_hdmi_frl_link_error_count(&intel_dp->aux, &intel_dp->attached_connector->base);
+
+		intel_dp->frl.is_trained = false;
+
+		/* Restart FRL training or fall back to TMDS mode */
+		intel_dp_check_frl_training(intel_dp);
+	}
+}
+
+static bool
+intel_dp_needs_link_retrain(struct intel_dp *intel_dp)
+{
+	u8 link_status[DP_LINK_STATUS_SIZE];
+
+	if (!intel_dp->link_trained)
+		return false;
+
+	/*
+	 * While PSR source HW is enabled, it will control main-link sending
+	 * frames, enabling and disabling it so trying to do a retrain will fail
+	 * as the link would or not be on or it could mix training patterns
+	 * and frame data at the same time causing retrain to fail.
+	 * Also when exiting PSR, HW will retrain the link anyways fixing
+	 * any link status error.
+	 */
+	if (intel_psr_enabled(intel_dp))
+		return false;
+
+	if (drm_dp_dpcd_read_phy_link_status(&intel_dp->aux, DP_PHY_DPRX,
+					     link_status) < 0)
+		return false;
+
+	/*
+	 * Validate the cached values of intel_dp->link_rate and
+	 * intel_dp->lane_count before attempting to retrain.
+	 *
+	 * FIXME would be nice to user the crtc state here, but since
+	 * we need to call this from the short HPD handler that seems
+	 * a bit hard.
+	 */
+	if (!intel_dp_link_params_valid(intel_dp, intel_dp->link_rate,
+					intel_dp->lane_count))
+		return false;
+
+	/* Retrain if link not ok */
+	return !intel_dp_link_ok(intel_dp, link_status);
+}
+
+static bool intel_dp_has_connector(struct intel_dp *intel_dp,
+				   const struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	struct intel_encoder *encoder;
+	enum pipe pipe;
+
+	if (!conn_state->best_encoder)
+		return false;
+
+	/* SST */
+	encoder = &dp_to_dig_port(intel_dp)->base;
+	if (conn_state->best_encoder == &encoder->base)
+		return true;
+
+	/* MST */
+	for_each_pipe(i915, pipe) {
+		encoder = &intel_dp->mst_encoders[pipe]->base;
+		if (conn_state->best_encoder == &encoder->base)
+			return true;
+	}
+
+	return false;
+}
+
+static int intel_dp_prep_link_retrain(struct intel_dp *intel_dp,
+				      struct drm_modeset_acquire_ctx *ctx,
+				      u8 *pipe_mask)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	struct drm_connector_list_iter conn_iter;
+	struct intel_connector *connector;
+	int ret = 0;
+
+	*pipe_mask = 0;
+
+	if (!intel_dp_needs_link_retrain(intel_dp))
+		return 0;
+
+	drm_connector_list_iter_begin(&i915->drm, &conn_iter);
+	for_each_intel_connector_iter(connector, &conn_iter) {
+		struct drm_connector_state *conn_state =
+			connector->base.state;
+		struct intel_crtc_state *crtc_state;
+		struct intel_crtc *crtc;
+
+		if (!intel_dp_has_connector(intel_dp, conn_state))
+			continue;
+
+		crtc = to_intel_crtc(conn_state->crtc);
+		if (!crtc)
+			continue;
+
+		ret = drm_modeset_lock(&crtc->base.mutex, ctx);
+		if (ret)
+			break;
+
+		crtc_state = to_intel_crtc_state(crtc->base.state);
+
+		drm_WARN_ON(&i915->drm, !intel_crtc_has_dp_encoder(crtc_state));
+
+		if (!crtc_state->hw.active)
+			continue;
+
+		if (conn_state->commit &&
+		    !try_wait_for_completion(&conn_state->commit->hw_done))
+			continue;
+
+		*pipe_mask |= BIT(crtc->pipe);
+	}
+	drm_connector_list_iter_end(&conn_iter);
+
+	if (!intel_dp_needs_link_retrain(intel_dp))
+		*pipe_mask = 0;
+
+	return ret;
+}
+
+static bool intel_dp_is_connected(struct intel_dp *intel_dp)
+{
+	struct intel_connector *connector = intel_dp->attached_connector;
+
+	return connector->base.status == connector_status_connected ||
+		intel_dp->is_mst;
+}
+
+int intel_dp_retrain_link(struct intel_encoder *encoder,
+			  struct drm_modeset_acquire_ctx *ctx)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	struct intel_crtc *crtc;
+	u8 pipe_mask;
+	int ret;
+
+	if (!intel_dp_is_connected(intel_dp))
+		return 0;
+
+	ret = drm_modeset_lock(&dev_priv->drm.mode_config.connection_mutex,
+			       ctx);
+	if (ret)
+		return ret;
+
+	ret = intel_dp_prep_link_retrain(intel_dp, ctx, &pipe_mask);
+	if (ret)
+		return ret;
+
+	if (pipe_mask == 0)
+		return 0;
+
+	drm_dbg_kms(&dev_priv->drm, "[ENCODER:%d:%s] retraining link\n",
+		    encoder->base.base.id, encoder->base.name);
+
+	for_each_intel_crtc_in_pipe_mask(&dev_priv->drm, crtc, pipe_mask) {
+		const struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+
+		/* Suppress underruns caused by re-training */
+		intel_set_cpu_fifo_underrun_reporting(dev_priv, crtc->pipe, false);
+		if (crtc_state->has_pch_encoder)
+			intel_set_pch_fifo_underrun_reporting(dev_priv,
+							      intel_crtc_pch_transcoder(crtc), false);
+	}
+
+	for_each_intel_crtc_in_pipe_mask(&dev_priv->drm, crtc, pipe_mask) {
+		const struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+
+		/* retrain on the MST master transcoder */
+		if (DISPLAY_VER(dev_priv) >= 12 &&
+		    intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST) &&
+		    !intel_dp_mst_is_master_trans(crtc_state))
+			continue;
+
+		intel_dp_check_frl_training(intel_dp);
+		intel_dp_pcon_dsc_configure(intel_dp, crtc_state);
+		intel_dp_start_link_train(intel_dp, crtc_state);
+		intel_dp_stop_link_train(intel_dp, crtc_state);
+		break;
+	}
+
+	for_each_intel_crtc_in_pipe_mask(&dev_priv->drm, crtc, pipe_mask) {
+		const struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+
+		/* Keep underrun reporting disabled until things are stable */
+		intel_crtc_wait_for_next_vblank(crtc);
+
+		intel_set_cpu_fifo_underrun_reporting(dev_priv, crtc->pipe, true);
+		if (crtc_state->has_pch_encoder)
+			intel_set_pch_fifo_underrun_reporting(dev_priv,
+							      intel_crtc_pch_transcoder(crtc), true);
+	}
+
+	return 0;
+}
+
+static int intel_dp_prep_phy_test(struct intel_dp *intel_dp,
+				  struct drm_modeset_acquire_ctx *ctx,
+				  u8 *pipe_mask)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	struct drm_connector_list_iter conn_iter;
+	struct intel_connector *connector;
+	int ret = 0;
+
+	*pipe_mask = 0;
+
+	drm_connector_list_iter_begin(&i915->drm, &conn_iter);
+	for_each_intel_connector_iter(connector, &conn_iter) {
+		struct drm_connector_state *conn_state =
+			connector->base.state;
+		struct intel_crtc_state *crtc_state;
+		struct intel_crtc *crtc;
+
+		if (!intel_dp_has_connector(intel_dp, conn_state))
+			continue;
+
+		crtc = to_intel_crtc(conn_state->crtc);
+		if (!crtc)
+			continue;
+
+		ret = drm_modeset_lock(&crtc->base.mutex, ctx);
+		if (ret)
+			break;
+
+		crtc_state = to_intel_crtc_state(crtc->base.state);
+
+		drm_WARN_ON(&i915->drm, !intel_crtc_has_dp_encoder(crtc_state));
+
+		if (!crtc_state->hw.active)
+			continue;
+
+		if (conn_state->commit &&
+		    !try_wait_for_completion(&conn_state->commit->hw_done))
+			continue;
+
+		*pipe_mask |= BIT(crtc->pipe);
+	}
+	drm_connector_list_iter_end(&conn_iter);
+
+	return ret;
+}
+
+static int intel_dp_do_phy_test(struct intel_encoder *encoder,
+				struct drm_modeset_acquire_ctx *ctx)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	struct intel_crtc *crtc;
+	u8 pipe_mask;
+	int ret;
+
+	ret = drm_modeset_lock(&dev_priv->drm.mode_config.connection_mutex,
+			       ctx);
+	if (ret)
+		return ret;
+
+	ret = intel_dp_prep_phy_test(intel_dp, ctx, &pipe_mask);
+	if (ret)
+		return ret;
+
+	if (pipe_mask == 0)
+		return 0;
+
+	drm_dbg_kms(&dev_priv->drm, "[ENCODER:%d:%s] PHY test\n",
+		    encoder->base.base.id, encoder->base.name);
+
+	for_each_intel_crtc_in_pipe_mask(&dev_priv->drm, crtc, pipe_mask) {
+		const struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+
+		/* test on the MST master transcoder */
+		if (DISPLAY_VER(dev_priv) >= 12 &&
+		    intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST) &&
+		    !intel_dp_mst_is_master_trans(crtc_state))
+			continue;
+
+		intel_dp_process_phy_request(intel_dp, crtc_state);
+		break;
+	}
+
+	return 0;
+}
+
+void intel_dp_phy_test(struct intel_encoder *encoder)
+{
+	struct drm_modeset_acquire_ctx ctx;
+	int ret;
+
+	drm_modeset_acquire_init(&ctx, 0);
+
+	for (;;) {
+		ret = intel_dp_do_phy_test(encoder, &ctx);
+
+		if (ret == -EDEADLK) {
+			drm_modeset_backoff(&ctx);
+			continue;
+		}
+
+		break;
+	}
+
+	drm_modeset_drop_locks(&ctx);
+	drm_modeset_acquire_fini(&ctx);
+	drm_WARN(encoder->base.dev, ret,
+		 "Acquiring modeset locks failed with %i\n", ret);
+}
+
+static void intel_dp_check_device_service_irq(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	u8 val;
+
+	if (intel_dp->dpcd[DP_DPCD_REV] < 0x11)
+		return;
+
+	if (drm_dp_dpcd_readb(&intel_dp->aux,
+			      DP_DEVICE_SERVICE_IRQ_VECTOR, &val) != 1 || !val)
+		return;
+
+	drm_dp_dpcd_writeb(&intel_dp->aux, DP_DEVICE_SERVICE_IRQ_VECTOR, val);
+
+	if (val & DP_AUTOMATED_TEST_REQUEST)
+		intel_dp_handle_test_request(intel_dp);
+
+	if (val & DP_CP_IRQ)
+		intel_hdcp_handle_cp_irq(intel_dp->attached_connector);
+
+	if (val & DP_SINK_SPECIFIC_IRQ)
+		drm_dbg_kms(&i915->drm, "Sink specific irq unhandled\n");
+}
+
+static void intel_dp_check_link_service_irq(struct intel_dp *intel_dp)
+{
+	u8 val;
+
+	if (intel_dp->dpcd[DP_DPCD_REV] < 0x11)
+		return;
+
+	if (drm_dp_dpcd_readb(&intel_dp->aux,
+			      DP_LINK_SERVICE_IRQ_VECTOR_ESI0, &val) != 1 || !val)
+		return;
+
+	if (drm_dp_dpcd_writeb(&intel_dp->aux,
+			       DP_LINK_SERVICE_IRQ_VECTOR_ESI0, val) != 1)
+		return;
+
+	if (val & HDMI_LINK_STATUS_CHANGED)
+		intel_dp_handle_hdmi_link_status_change(intel_dp);
+}
+
+/*
+ * According to DP spec
+ * 5.1.2:
+ *  1. Read DPCD
+ *  2. Configure link according to Receiver Capabilities
+ *  3. Use Link Training from 2.5.3.3 and 3.5.1.3
+ *  4. Check link status on receipt of hot-plug interrupt
+ *
+ * intel_dp_short_pulse -  handles short pulse interrupts
+ * when full detection is not required.
+ * Returns %true if short pulse is handled and full detection
+ * is NOT required and %false otherwise.
+ */
+static bool
+intel_dp_short_pulse(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	u8 old_sink_count = intel_dp->sink_count;
+	bool ret;
+
+	/*
+	 * Clearing compliance test variables to allow capturing
+	 * of values for next automated test request.
+	 */
+	memset(&intel_dp->compliance, 0, sizeof(intel_dp->compliance));
+
+	/*
+	 * Now read the DPCD to see if it's actually running
+	 * If the current value of sink count doesn't match with
+	 * the value that was stored earlier or dpcd read failed
+	 * we need to do full detection
+	 */
+	ret = intel_dp_get_dpcd(intel_dp);
+
+	if ((old_sink_count != intel_dp->sink_count) || !ret) {
+		/* No need to proceed if we are going to do full detect */
+		return false;
+	}
+
+	intel_dp_check_device_service_irq(intel_dp);
+	intel_dp_check_link_service_irq(intel_dp);
+
+	/* Handle CEC interrupts, if any */
+	drm_dp_cec_irq(&intel_dp->aux);
+
+	/* defer to the hotplug work for link retraining if needed */
+	if (intel_dp_needs_link_retrain(intel_dp))
+		return false;
+
+	intel_psr_short_pulse(intel_dp);
+
+	switch (intel_dp->compliance.test_type) {
+	case DP_TEST_LINK_TRAINING:
+		drm_dbg_kms(&dev_priv->drm,
+			    "Link Training Compliance Test requested\n");
+		/* Send a Hotplug Uevent to userspace to start modeset */
+		drm_kms_helper_hotplug_event(&dev_priv->drm);
+		break;
+	case DP_TEST_LINK_PHY_TEST_PATTERN:
+		drm_dbg_kms(&dev_priv->drm,
+			    "PHY test pattern Compliance Test requested\n");
+		/*
+		 * Schedule long hpd to do the test
+		 *
+		 * FIXME get rid of the ad-hoc phy test modeset code
+		 * and properly incorporate it into the normal modeset.
+		 */
+		return false;
+	}
+
+	return true;
+}
+
+/* XXX this is probably wrong for multiple downstream ports */
+static enum drm_connector_status
+intel_dp_detect_dpcd(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	u8 *dpcd = intel_dp->dpcd;
+	u8 type;
+
+	if (drm_WARN_ON(&i915->drm, intel_dp_is_edp(intel_dp)))
+		return connector_status_connected;
+
+	lspcon_resume(dig_port);
+
+	if (!intel_dp_get_dpcd(intel_dp))
+		return connector_status_disconnected;
+
+	/* if there's no downstream port, we're done */
+	if (!drm_dp_is_branch(dpcd))
+		return connector_status_connected;
+
+	/* If we're HPD-aware, SINK_COUNT changes dynamically */
+	if (intel_dp_has_sink_count(intel_dp) &&
+	    intel_dp->downstream_ports[0] & DP_DS_PORT_HPD) {
+		return intel_dp->sink_count ?
+		connector_status_connected : connector_status_disconnected;
+	}
+
+	if (intel_dp_can_mst(intel_dp))
+		return connector_status_connected;
+
+	/* If no HPD, poke DDC gently */
+	if (drm_probe_ddc(&intel_dp->aux.ddc))
+		return connector_status_connected;
+
+	/* Well we tried, say unknown for unreliable port types */
+	if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) {
+		type = intel_dp->downstream_ports[0] & DP_DS_PORT_TYPE_MASK;
+		if (type == DP_DS_PORT_TYPE_VGA ||
+		    type == DP_DS_PORT_TYPE_NON_EDID)
+			return connector_status_unknown;
+	} else {
+		type = intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] &
+			DP_DWN_STRM_PORT_TYPE_MASK;
+		if (type == DP_DWN_STRM_PORT_TYPE_ANALOG ||
+		    type == DP_DWN_STRM_PORT_TYPE_OTHER)
+			return connector_status_unknown;
+	}
+
+	/* Anything else is out of spec, warn and ignore */
+	drm_dbg_kms(&i915->drm, "Broken DP branch device, ignoring\n");
+	return connector_status_disconnected;
+}
+
+static enum drm_connector_status
+edp_detect(struct intel_dp *intel_dp)
+{
+	return connector_status_connected;
+}
+
+/*
+ * intel_digital_port_connected - is the specified port connected?
+ * @encoder: intel_encoder
+ *
+ * In cases where there's a connector physically connected but it can't be used
+ * by our hardware we also return false, since the rest of the driver should
+ * pretty much treat the port as disconnected. This is relevant for type-C
+ * (starting on ICL) where there's ownership involved.
+ *
+ * Return %true if port is connected, %false otherwise.
+ */
+bool intel_digital_port_connected(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	bool is_connected = false;
+	intel_wakeref_t wakeref;
+
+	with_intel_display_power(dev_priv, POWER_DOMAIN_DISPLAY_CORE, wakeref)
+		is_connected = dig_port->connected(encoder);
+
+	return is_connected;
+}
+
+static struct edid *
+intel_dp_get_edid(struct intel_dp *intel_dp)
+{
+	struct intel_connector *intel_connector = intel_dp->attached_connector;
+
+	/* use cached edid if we have one */
+	if (intel_connector->edid) {
+		/* invalid edid */
+		if (IS_ERR(intel_connector->edid))
+			return NULL;
+
+		return drm_edid_duplicate(intel_connector->edid);
+	} else
+		return drm_get_edid(&intel_connector->base,
+				    &intel_dp->aux.ddc);
+}
+
+static void
+intel_dp_update_dfp(struct intel_dp *intel_dp,
+		    const struct edid *edid)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	struct intel_connector *connector = intel_dp->attached_connector;
+
+	intel_dp->dfp.max_bpc =
+		drm_dp_downstream_max_bpc(intel_dp->dpcd,
+					  intel_dp->downstream_ports, edid);
+
+	intel_dp->dfp.max_dotclock =
+		drm_dp_downstream_max_dotclock(intel_dp->dpcd,
+					       intel_dp->downstream_ports);
+
+	intel_dp->dfp.min_tmds_clock =
+		drm_dp_downstream_min_tmds_clock(intel_dp->dpcd,
+						 intel_dp->downstream_ports,
+						 edid);
+	intel_dp->dfp.max_tmds_clock =
+		drm_dp_downstream_max_tmds_clock(intel_dp->dpcd,
+						 intel_dp->downstream_ports,
+						 edid);
+
+	intel_dp->dfp.pcon_max_frl_bw =
+		drm_dp_get_pcon_max_frl_bw(intel_dp->dpcd,
+					   intel_dp->downstream_ports);
+
+	drm_dbg_kms(&i915->drm,
+		    "[CONNECTOR:%d:%s] DFP max bpc %d, max dotclock %d, TMDS clock %d-%d, PCON Max FRL BW %dGbps\n",
+		    connector->base.base.id, connector->base.name,
+		    intel_dp->dfp.max_bpc,
+		    intel_dp->dfp.max_dotclock,
+		    intel_dp->dfp.min_tmds_clock,
+		    intel_dp->dfp.max_tmds_clock,
+		    intel_dp->dfp.pcon_max_frl_bw);
+
+	intel_dp_get_pcon_dsc_cap(intel_dp);
+}
+
+static void
+intel_dp_update_420(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	struct intel_connector *connector = intel_dp->attached_connector;
+	bool is_branch, ycbcr_420_passthrough, ycbcr_444_to_420, rgb_to_ycbcr;
+
+	/* No YCbCr output support on gmch platforms */
+	if (HAS_GMCH(i915))
+		return;
+
+	/*
+	 * ILK doesn't seem capable of DP YCbCr output. The
+	 * displayed image is severly corrupted. SNB+ is fine.
+	 */
+	if (IS_IRONLAKE(i915))
+		return;
+
+	is_branch = drm_dp_is_branch(intel_dp->dpcd);
+	ycbcr_420_passthrough =
+		drm_dp_downstream_420_passthrough(intel_dp->dpcd,
+						  intel_dp->downstream_ports);
+	/* on-board LSPCON always assumed to support 4:4:4->4:2:0 conversion */
+	ycbcr_444_to_420 =
+		dp_to_dig_port(intel_dp)->lspcon.active ||
+		drm_dp_downstream_444_to_420_conversion(intel_dp->dpcd,
+							intel_dp->downstream_ports);
+	rgb_to_ycbcr = drm_dp_downstream_rgb_to_ycbcr_conversion(intel_dp->dpcd,
+								 intel_dp->downstream_ports,
+								 DP_DS_HDMI_BT709_RGB_YCBCR_CONV);
+
+	if (DISPLAY_VER(i915) >= 11) {
+		/* Let PCON convert from RGB->YCbCr if possible */
+		if (is_branch && rgb_to_ycbcr && ycbcr_444_to_420) {
+			intel_dp->dfp.rgb_to_ycbcr = true;
+			intel_dp->dfp.ycbcr_444_to_420 = true;
+			connector->base.ycbcr_420_allowed = true;
+		} else {
+		/* Prefer 4:2:0 passthrough over 4:4:4->4:2:0 conversion */
+			intel_dp->dfp.ycbcr_444_to_420 =
+				ycbcr_444_to_420 && !ycbcr_420_passthrough;
+
+			connector->base.ycbcr_420_allowed =
+				!is_branch || ycbcr_444_to_420 || ycbcr_420_passthrough;
+		}
+	} else {
+		/* 4:4:4->4:2:0 conversion is the only way */
+		intel_dp->dfp.ycbcr_444_to_420 = ycbcr_444_to_420;
+
+		connector->base.ycbcr_420_allowed = ycbcr_444_to_420;
+	}
+
+	drm_dbg_kms(&i915->drm,
+		    "[CONNECTOR:%d:%s] RGB->YcbCr conversion? %s, YCbCr 4:2:0 allowed? %s, YCbCr 4:4:4->4:2:0 conversion? %s\n",
+		    connector->base.base.id, connector->base.name,
+		    str_yes_no(intel_dp->dfp.rgb_to_ycbcr),
+		    str_yes_no(connector->base.ycbcr_420_allowed),
+		    str_yes_no(intel_dp->dfp.ycbcr_444_to_420));
+}
+
+static void
+intel_dp_set_edid(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	struct intel_connector *connector = intel_dp->attached_connector;
+	struct edid *edid;
+	bool vrr_capable;
+
+	intel_dp_unset_edid(intel_dp);
+	edid = intel_dp_get_edid(intel_dp);
+	connector->detect_edid = edid;
+
+	vrr_capable = intel_vrr_is_capable(connector);
+	drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s] VRR capable: %s\n",
+		    connector->base.base.id, connector->base.name, str_yes_no(vrr_capable));
+	drm_connector_set_vrr_capable_property(&connector->base, vrr_capable);
+
+	intel_dp_update_dfp(intel_dp, edid);
+	intel_dp_update_420(intel_dp);
+
+	if (edid && edid->input & DRM_EDID_INPUT_DIGITAL) {
+		intel_dp->has_hdmi_sink = drm_detect_hdmi_monitor(edid);
+		intel_dp->has_audio = drm_detect_monitor_audio(edid);
+	}
+
+	drm_dp_cec_set_edid(&intel_dp->aux, edid);
+}
+
+static void
+intel_dp_unset_edid(struct intel_dp *intel_dp)
+{
+	struct intel_connector *connector = intel_dp->attached_connector;
+
+	drm_dp_cec_unset_edid(&intel_dp->aux);
+	kfree(connector->detect_edid);
+	connector->detect_edid = NULL;
+
+	intel_dp->has_hdmi_sink = false;
+	intel_dp->has_audio = false;
+
+	intel_dp->dfp.max_bpc = 0;
+	intel_dp->dfp.max_dotclock = 0;
+	intel_dp->dfp.min_tmds_clock = 0;
+	intel_dp->dfp.max_tmds_clock = 0;
+
+	intel_dp->dfp.pcon_max_frl_bw = 0;
+
+	intel_dp->dfp.ycbcr_444_to_420 = false;
+	connector->base.ycbcr_420_allowed = false;
+
+	drm_connector_set_vrr_capable_property(&connector->base,
+					       false);
+}
+
+static int
+intel_dp_detect(struct drm_connector *connector,
+		struct drm_modeset_acquire_ctx *ctx,
+		bool force)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->dev);
+	struct intel_dp *intel_dp = intel_attached_dp(to_intel_connector(connector));
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	struct intel_encoder *encoder = &dig_port->base;
+	enum drm_connector_status status;
+
+	drm_dbg_kms(&dev_priv->drm, "[CONNECTOR:%d:%s]\n",
+		    connector->base.id, connector->name);
+	drm_WARN_ON(&dev_priv->drm,
+		    !drm_modeset_is_locked(&dev_priv->drm.mode_config.connection_mutex));
+
+	if (!INTEL_DISPLAY_ENABLED(dev_priv))
+		return connector_status_disconnected;
+
+	/* Can't disconnect eDP */
+	if (intel_dp_is_edp(intel_dp))
+		status = edp_detect(intel_dp);
+	else if (intel_digital_port_connected(encoder))
+		status = intel_dp_detect_dpcd(intel_dp);
+	else
+		status = connector_status_disconnected;
+
+	if (status == connector_status_disconnected) {
+		memset(&intel_dp->compliance, 0, sizeof(intel_dp->compliance));
+		memset(intel_dp->dsc_dpcd, 0, sizeof(intel_dp->dsc_dpcd));
+
+		if (intel_dp->is_mst) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "MST device may have disappeared %d vs %d\n",
+				    intel_dp->is_mst,
+				    intel_dp->mst_mgr.mst_state);
+			intel_dp->is_mst = false;
+			drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr,
+							intel_dp->is_mst);
+		}
+
+		goto out;
+	}
+
+	/* Read DP Sink DSC Cap DPCD regs for DP v1.4 */
+	if (DISPLAY_VER(dev_priv) >= 11)
+		intel_dp_get_dsc_sink_cap(intel_dp);
+
+	intel_dp_configure_mst(intel_dp);
+
+	/*
+	 * TODO: Reset link params when switching to MST mode, until MST
+	 * supports link training fallback params.
+	 */
+	if (intel_dp->reset_link_params || intel_dp->is_mst) {
+		intel_dp_reset_max_link_params(intel_dp);
+		intel_dp->reset_link_params = false;
+	}
+
+	intel_dp_print_rates(intel_dp);
+
+	if (intel_dp->is_mst) {
+		/*
+		 * If we are in MST mode then this connector
+		 * won't appear connected or have anything
+		 * with EDID on it
+		 */
+		status = connector_status_disconnected;
+		goto out;
+	}
+
+	/*
+	 * Some external monitors do not signal loss of link synchronization
+	 * with an IRQ_HPD, so force a link status check.
+	 */
+	if (!intel_dp_is_edp(intel_dp)) {
+		int ret;
+
+		ret = intel_dp_retrain_link(encoder, ctx);
+		if (ret)
+			return ret;
+	}
+
+	/*
+	 * Clearing NACK and defer counts to get their exact values
+	 * while reading EDID which are required by Compliance tests
+	 * 4.2.2.4 and 4.2.2.5
+	 */
+	intel_dp->aux.i2c_nack_count = 0;
+	intel_dp->aux.i2c_defer_count = 0;
+
+	intel_dp_set_edid(intel_dp);
+	if (intel_dp_is_edp(intel_dp) ||
+	    to_intel_connector(connector)->detect_edid)
+		status = connector_status_connected;
+
+	intel_dp_check_device_service_irq(intel_dp);
+
+out:
+	if (status != connector_status_connected && !intel_dp->is_mst)
+		intel_dp_unset_edid(intel_dp);
+
+	/*
+	 * Make sure the refs for power wells enabled during detect are
+	 * dropped to avoid a new detect cycle triggered by HPD polling.
+	 */
+	intel_display_power_flush_work(dev_priv);
+
+	if (!intel_dp_is_edp(intel_dp))
+		drm_dp_set_subconnector_property(connector,
+						 status,
+						 intel_dp->dpcd,
+						 intel_dp->downstream_ports);
+	return status;
+}
+
+static void
+intel_dp_force(struct drm_connector *connector)
+{
+	struct intel_dp *intel_dp = intel_attached_dp(to_intel_connector(connector));
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	struct intel_encoder *intel_encoder = &dig_port->base;
+	struct drm_i915_private *dev_priv = to_i915(intel_encoder->base.dev);
+	enum intel_display_power_domain aux_domain =
+		intel_aux_power_domain(dig_port);
+	intel_wakeref_t wakeref;
+
+	drm_dbg_kms(&dev_priv->drm, "[CONNECTOR:%d:%s]\n",
+		    connector->base.id, connector->name);
+	intel_dp_unset_edid(intel_dp);
+
+	if (connector->status != connector_status_connected)
+		return;
+
+	wakeref = intel_display_power_get(dev_priv, aux_domain);
+
+	intel_dp_set_edid(intel_dp);
+
+	intel_display_power_put(dev_priv, aux_domain, wakeref);
+}
+
+static int intel_dp_get_modes(struct drm_connector *connector)
+{
+	struct intel_connector *intel_connector = to_intel_connector(connector);
+	struct edid *edid;
+	int num_modes = 0;
+
+	edid = intel_connector->detect_edid;
+	if (edid)
+		num_modes = intel_connector_update_modes(connector, edid);
+
+	/* Also add fixed mode, which may or may not be present in EDID */
+	if (intel_dp_is_edp(intel_attached_dp(intel_connector)))
+		num_modes += intel_panel_get_modes(intel_connector);
+
+	if (num_modes)
+		return num_modes;
+
+	if (!edid) {
+		struct intel_dp *intel_dp = intel_attached_dp(intel_connector);
+		struct drm_display_mode *mode;
+
+		mode = drm_dp_downstream_mode(connector->dev,
+					      intel_dp->dpcd,
+					      intel_dp->downstream_ports);
+		if (mode) {
+			drm_mode_probed_add(connector, mode);
+			num_modes++;
+		}
+	}
+
+	return num_modes;
+}
+
+static int
+intel_dp_connector_register(struct drm_connector *connector)
+{
+	struct drm_i915_private *i915 = to_i915(connector->dev);
+	struct intel_dp *intel_dp = intel_attached_dp(to_intel_connector(connector));
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	struct intel_lspcon *lspcon = &dig_port->lspcon;
+	int ret;
+
+	ret = intel_connector_register(connector);
+	if (ret)
+		return ret;
+
+	drm_dbg_kms(&i915->drm, "registering %s bus for %s\n",
+		    intel_dp->aux.name, connector->kdev->kobj.name);
+
+	intel_dp->aux.dev = connector->kdev;
+	ret = drm_dp_aux_register(&intel_dp->aux);
+	if (!ret)
+		drm_dp_cec_register_connector(&intel_dp->aux, connector);
+
+	if (!intel_bios_is_lspcon_present(i915, dig_port->base.port))
+		return ret;
+
+	/*
+	 * ToDo: Clean this up to handle lspcon init and resume more
+	 * efficiently and streamlined.
+	 */
+	if (lspcon_init(dig_port)) {
+		lspcon_detect_hdr_capability(lspcon);
+		if (lspcon->hdr_supported)
+			drm_connector_attach_hdr_output_metadata_property(connector);
+	}
+
+	return ret;
+}
+
+static void
+intel_dp_connector_unregister(struct drm_connector *connector)
+{
+	struct intel_dp *intel_dp = intel_attached_dp(to_intel_connector(connector));
+
+	drm_dp_cec_unregister_connector(&intel_dp->aux);
+	drm_dp_aux_unregister(&intel_dp->aux);
+	intel_connector_unregister(connector);
+}
+
+void intel_dp_encoder_flush_work(struct drm_encoder *encoder)
+{
+	struct intel_digital_port *dig_port = enc_to_dig_port(to_intel_encoder(encoder));
+	struct intel_dp *intel_dp = &dig_port->dp;
+
+	intel_dp_mst_encoder_cleanup(dig_port);
+
+	intel_pps_vdd_off_sync(intel_dp);
+
+	intel_dp_aux_fini(intel_dp);
+}
+
+void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(intel_encoder);
+
+	intel_pps_vdd_off_sync(intel_dp);
+}
+
+void intel_dp_encoder_shutdown(struct intel_encoder *intel_encoder)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(intel_encoder);
+
+	intel_pps_wait_power_cycle(intel_dp);
+}
+
+static int intel_modeset_tile_group(struct intel_atomic_state *state,
+				    int tile_group_id)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct drm_connector_list_iter conn_iter;
+	struct drm_connector *connector;
+	int ret = 0;
+
+	drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);
+	drm_for_each_connector_iter(connector, &conn_iter) {
+		struct drm_connector_state *conn_state;
+		struct intel_crtc_state *crtc_state;
+		struct intel_crtc *crtc;
+
+		if (!connector->has_tile ||
+		    connector->tile_group->id != tile_group_id)
+			continue;
+
+		conn_state = drm_atomic_get_connector_state(&state->base,
+							    connector);
+		if (IS_ERR(conn_state)) {
+			ret = PTR_ERR(conn_state);
+			break;
+		}
+
+		crtc = to_intel_crtc(conn_state->crtc);
+
+		if (!crtc)
+			continue;
+
+		crtc_state = intel_atomic_get_new_crtc_state(state, crtc);
+		crtc_state->uapi.mode_changed = true;
+
+		ret = drm_atomic_add_affected_planes(&state->base, &crtc->base);
+		if (ret)
+			break;
+	}
+	drm_connector_list_iter_end(&conn_iter);
+
+	return ret;
+}
+
+static int intel_modeset_affected_transcoders(struct intel_atomic_state *state, u8 transcoders)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct intel_crtc *crtc;
+
+	if (transcoders == 0)
+		return 0;
+
+	for_each_intel_crtc(&dev_priv->drm, crtc) {
+		struct intel_crtc_state *crtc_state;
+		int ret;
+
+		crtc_state = intel_atomic_get_crtc_state(&state->base, crtc);
+		if (IS_ERR(crtc_state))
+			return PTR_ERR(crtc_state);
+
+		if (!crtc_state->hw.enable)
+			continue;
+
+		if (!(transcoders & BIT(crtc_state->cpu_transcoder)))
+			continue;
+
+		crtc_state->uapi.mode_changed = true;
+
+		ret = drm_atomic_add_affected_connectors(&state->base, &crtc->base);
+		if (ret)
+			return ret;
+
+		ret = drm_atomic_add_affected_planes(&state->base, &crtc->base);
+		if (ret)
+			return ret;
+
+		transcoders &= ~BIT(crtc_state->cpu_transcoder);
+	}
+
+	drm_WARN_ON(&dev_priv->drm, transcoders != 0);
+
+	return 0;
+}
+
+static int intel_modeset_synced_crtcs(struct intel_atomic_state *state,
+				      struct drm_connector *connector)
+{
+	const struct drm_connector_state *old_conn_state =
+		drm_atomic_get_old_connector_state(&state->base, connector);
+	const struct intel_crtc_state *old_crtc_state;
+	struct intel_crtc *crtc;
+	u8 transcoders;
+
+	crtc = to_intel_crtc(old_conn_state->crtc);
+	if (!crtc)
+		return 0;
+
+	old_crtc_state = intel_atomic_get_old_crtc_state(state, crtc);
+
+	if (!old_crtc_state->hw.active)
+		return 0;
+
+	transcoders = old_crtc_state->sync_mode_slaves_mask;
+	if (old_crtc_state->master_transcoder != INVALID_TRANSCODER)
+		transcoders |= BIT(old_crtc_state->master_transcoder);
+
+	return intel_modeset_affected_transcoders(state,
+						  transcoders);
+}
+
+static int intel_dp_connector_atomic_check(struct drm_connector *conn,
+					   struct drm_atomic_state *_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(conn->dev);
+	struct intel_atomic_state *state = to_intel_atomic_state(_state);
+	struct drm_connector_state *conn_state = drm_atomic_get_new_connector_state(_state, conn);
+	struct intel_connector *intel_conn = to_intel_connector(conn);
+	struct intel_dp *intel_dp = enc_to_intel_dp(intel_conn->encoder);
+	int ret;
+
+	ret = intel_digital_connector_atomic_check(conn, &state->base);
+	if (ret)
+		return ret;
+
+	if (intel_dp_mst_source_support(intel_dp)) {
+		ret = drm_dp_mst_root_conn_atomic_check(conn_state, &intel_dp->mst_mgr);
+		if (ret)
+			return ret;
+	}
+
+	/*
+	 * We don't enable port sync on BDW due to missing w/as and
+	 * due to not having adjusted the modeset sequence appropriately.
+	 */
+	if (DISPLAY_VER(dev_priv) < 9)
+		return 0;
+
+	if (!intel_connector_needs_modeset(state, conn))
+		return 0;
+
+	if (conn->has_tile) {
+		ret = intel_modeset_tile_group(state, conn->tile_group->id);
+		if (ret)
+			return ret;
+	}
+
+	return intel_modeset_synced_crtcs(state, conn);
+}
+
+static void intel_dp_oob_hotplug_event(struct drm_connector *connector)
+{
+	struct intel_encoder *encoder = intel_attached_encoder(to_intel_connector(connector));
+	struct drm_i915_private *i915 = to_i915(connector->dev);
+
+	spin_lock_irq(&i915->irq_lock);
+	i915->display.hotplug.event_bits |= BIT(encoder->hpd_pin);
+	spin_unlock_irq(&i915->irq_lock);
+	queue_delayed_work(system_wq, &i915->display.hotplug.hotplug_work, 0);
+}
+
+static const struct drm_connector_funcs intel_dp_connector_funcs = {
+	.force = intel_dp_force,
+	.fill_modes = drm_helper_probe_single_connector_modes,
+	.atomic_get_property = intel_digital_connector_atomic_get_property,
+	.atomic_set_property = intel_digital_connector_atomic_set_property,
+	.late_register = intel_dp_connector_register,
+	.early_unregister = intel_dp_connector_unregister,
+	.destroy = intel_connector_destroy,
+	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+	.atomic_duplicate_state = intel_digital_connector_duplicate_state,
+	.oob_hotplug_event = intel_dp_oob_hotplug_event,
+};
+
+static const struct drm_connector_helper_funcs intel_dp_connector_helper_funcs = {
+	.detect_ctx = intel_dp_detect,
+	.get_modes = intel_dp_get_modes,
+	.mode_valid = intel_dp_mode_valid,
+	.atomic_check = intel_dp_connector_atomic_check,
+};
+
+enum irqreturn
+intel_dp_hpd_pulse(struct intel_digital_port *dig_port, bool long_hpd)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	struct intel_dp *intel_dp = &dig_port->dp;
+
+	if (dig_port->base.type == INTEL_OUTPUT_EDP &&
+	    (long_hpd || !intel_pps_have_panel_power_or_vdd(intel_dp))) {
+		/*
+		 * vdd off can generate a long/short pulse on eDP which
+		 * would require vdd on to handle it, and thus we
+		 * would end up in an endless cycle of
+		 * "vdd off -> long/short hpd -> vdd on -> detect -> vdd off -> ..."
+		 */
+		drm_dbg_kms(&i915->drm,
+			    "ignoring %s hpd on eDP [ENCODER:%d:%s]\n",
+			    long_hpd ? "long" : "short",
+			    dig_port->base.base.base.id,
+			    dig_port->base.base.name);
+		return IRQ_HANDLED;
+	}
+
+	drm_dbg_kms(&i915->drm, "got hpd irq on [ENCODER:%d:%s] - %s\n",
+		    dig_port->base.base.base.id,
+		    dig_port->base.base.name,
+		    long_hpd ? "long" : "short");
+
+	if (long_hpd) {
+		intel_dp->reset_link_params = true;
+		return IRQ_NONE;
+	}
+
+	if (intel_dp->is_mst) {
+		if (!intel_dp_check_mst_status(intel_dp))
+			return IRQ_NONE;
+	} else if (!intel_dp_short_pulse(intel_dp)) {
+		return IRQ_NONE;
+	}
+
+	return IRQ_HANDLED;
+}
+
+/* check the VBT to see whether the eDP is on another port */
+bool intel_dp_is_port_edp(struct drm_i915_private *dev_priv, enum port port)
+{
+	/*
+	 * eDP not supported on g4x. so bail out early just
+	 * for a bit extra safety in case the VBT is bonkers.
+	 */
+	if (DISPLAY_VER(dev_priv) < 5)
+		return false;
+
+	if (DISPLAY_VER(dev_priv) < 9 && port == PORT_A)
+		return true;
+
+	return intel_bios_is_port_edp(dev_priv, port);
+}
+
+static bool
+has_gamut_metadata_dip(struct drm_i915_private *i915, enum port port)
+{
+	if (intel_bios_is_lspcon_present(i915, port))
+		return false;
+
+	if (DISPLAY_VER(i915) >= 11)
+		return true;
+
+	if (port == PORT_A)
+		return false;
+
+	if (IS_HASWELL(i915) || IS_BROADWELL(i915) ||
+	    DISPLAY_VER(i915) >= 9)
+		return true;
+
+	return false;
+}
+
+static void
+intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connector)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->dev);
+	enum port port = dp_to_dig_port(intel_dp)->base.port;
+
+	if (!intel_dp_is_edp(intel_dp))
+		drm_connector_attach_dp_subconnector_property(connector);
+
+	if (!IS_G4X(dev_priv) && port != PORT_A)
+		intel_attach_force_audio_property(connector);
+
+	intel_attach_broadcast_rgb_property(connector);
+	if (HAS_GMCH(dev_priv))
+		drm_connector_attach_max_bpc_property(connector, 6, 10);
+	else if (DISPLAY_VER(dev_priv) >= 5)
+		drm_connector_attach_max_bpc_property(connector, 6, 12);
+
+	/* Register HDMI colorspace for case of lspcon */
+	if (intel_bios_is_lspcon_present(dev_priv, port)) {
+		drm_connector_attach_content_type_property(connector);
+		intel_attach_hdmi_colorspace_property(connector);
+	} else {
+		intel_attach_dp_colorspace_property(connector);
+	}
+
+	if (has_gamut_metadata_dip(dev_priv, port))
+		drm_connector_attach_hdr_output_metadata_property(connector);
+
+	if (intel_dp_is_edp(intel_dp)) {
+		u32 allowed_scalers;
+
+		allowed_scalers = BIT(DRM_MODE_SCALE_ASPECT) | BIT(DRM_MODE_SCALE_FULLSCREEN);
+		if (!HAS_GMCH(dev_priv))
+			allowed_scalers |= BIT(DRM_MODE_SCALE_CENTER);
+
+		drm_connector_attach_scaling_mode_property(connector, allowed_scalers);
+
+		connector->state->scaling_mode = DRM_MODE_SCALE_ASPECT;
+
+	}
+
+	if (HAS_VRR(dev_priv))
+		drm_connector_attach_vrr_capable_property(connector);
+}
+
+static void
+intel_edp_add_properties(struct intel_dp *intel_dp)
+{
+	struct intel_connector *connector = intel_dp->attached_connector;
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+	const struct drm_display_mode *fixed_mode =
+		intel_panel_preferred_fixed_mode(connector);
+
+	if (!fixed_mode)
+		return;
+
+	drm_connector_set_panel_orientation_with_quirk(&connector->base,
+						       i915->display.vbt.orientation,
+						       fixed_mode->hdisplay,
+						       fixed_mode->vdisplay);
+}
+
+static bool intel_edp_init_connector(struct intel_dp *intel_dp,
+				     struct intel_connector *intel_connector)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct drm_device *dev = &dev_priv->drm;
+	struct drm_connector *connector = &intel_connector->base;
+	struct drm_display_mode *fixed_mode;
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+	bool has_dpcd;
+	enum pipe pipe = INVALID_PIPE;
+	struct edid *edid;
+
+	if (!intel_dp_is_edp(intel_dp))
+		return true;
+
+	/*
+	 * On IBX/CPT we may get here with LVDS already registered. Since the
+	 * driver uses the only internal power sequencer available for both
+	 * eDP and LVDS bail out early in this case to prevent interfering
+	 * with an already powered-on LVDS power sequencer.
+	 */
+	if (intel_get_lvds_encoder(dev_priv)) {
+		drm_WARN_ON(dev,
+			    !(HAS_PCH_IBX(dev_priv) || HAS_PCH_CPT(dev_priv)));
+		drm_info(&dev_priv->drm,
+			 "LVDS was detected, not registering eDP\n");
+
+		return false;
+	}
+
+	intel_bios_init_panel_early(dev_priv, &intel_connector->panel,
+				    encoder->devdata);
+
+	intel_pps_init(intel_dp);
+
+	/* Cache DPCD and EDID for edp. */
+	has_dpcd = intel_edp_init_dpcd(intel_dp);
+
+	if (!has_dpcd) {
+		/* if this fails, presume the device is a ghost */
+		drm_info(&dev_priv->drm,
+			 "failed to retrieve link info, disabling eDP\n");
+		goto out_vdd_off;
+	}
+
+	mutex_lock(&dev->mode_config.mutex);
+	edid = drm_get_edid(connector, &intel_dp->aux.ddc);
+	if (!edid) {
+		/* Fallback to EDID from ACPI OpRegion, if any */
+		edid = intel_opregion_get_edid(intel_connector);
+		if (edid)
+			drm_dbg_kms(&dev_priv->drm,
+				    "[CONNECTOR:%d:%s] Using OpRegion EDID\n",
+				    connector->base.id, connector->name);
+	}
+	if (edid) {
+		if (drm_add_edid_modes(connector, edid)) {
+			drm_connector_update_edid_property(connector, edid);
+		} else {
+			kfree(edid);
+			edid = ERR_PTR(-EINVAL);
+		}
+	} else {
+		edid = ERR_PTR(-ENOENT);
+	}
+	intel_connector->edid = edid;
+
+	intel_bios_init_panel_late(dev_priv, &intel_connector->panel,
+				   encoder->devdata, IS_ERR(edid) ? NULL : edid);
+
+	intel_panel_add_edid_fixed_modes(intel_connector, true);
+
+	/* MSO requires information from the EDID */
+	intel_edp_mso_init(intel_dp);
+
+	/* multiply the mode clock and horizontal timings for MSO */
+	list_for_each_entry(fixed_mode, &intel_connector->panel.fixed_modes, head)
+		intel_edp_mso_mode_fixup(intel_connector, fixed_mode);
+
+	/* fallback to VBT if available for eDP */
+	if (!intel_panel_preferred_fixed_mode(intel_connector))
+		intel_panel_add_vbt_lfp_fixed_mode(intel_connector);
+
+	mutex_unlock(&dev->mode_config.mutex);
+
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+		/*
+		 * Figure out the current pipe for the initial backlight setup.
+		 * If the current pipe isn't valid, try the PPS pipe, and if that
+		 * fails just assume pipe A.
+		 */
+		pipe = vlv_active_pipe(intel_dp);
+
+		if (pipe != PIPE_A && pipe != PIPE_B)
+			pipe = intel_dp->pps.pps_pipe;
+
+		if (pipe != PIPE_A && pipe != PIPE_B)
+			pipe = PIPE_A;
+
+		drm_dbg_kms(&dev_priv->drm,
+			    "using pipe %c for initial backlight setup\n",
+			    pipe_name(pipe));
+	}
+
+	intel_panel_init(intel_connector);
+
+	intel_backlight_setup(intel_connector, pipe);
+
+	intel_edp_add_properties(intel_dp);
+
+	intel_pps_init_late(intel_dp);
+
+	return true;
+
+out_vdd_off:
+	intel_pps_vdd_off_sync(intel_dp);
+
+	return false;
+}
+
+static void intel_dp_modeset_retry_work_fn(struct work_struct *work)
+{
+	struct intel_connector *intel_connector;
+	struct drm_connector *connector;
+
+	intel_connector = container_of(work, typeof(*intel_connector),
+				       modeset_retry_work);
+	connector = &intel_connector->base;
+	drm_dbg_kms(connector->dev, "[CONNECTOR:%d:%s]\n", connector->base.id,
+		    connector->name);
+
+	/* Grab the locks before changing connector property*/
+	mutex_lock(&connector->dev->mode_config.mutex);
+	/* Set connector link status to BAD and send a Uevent to notify
+	 * userspace to do a modeset.
+	 */
+	drm_connector_set_link_status_property(connector,
+					       DRM_MODE_LINK_STATUS_BAD);
+	mutex_unlock(&connector->dev->mode_config.mutex);
+	/* Send Hotplug uevent so userspace can reprobe */
+	drm_kms_helper_connector_hotplug_event(connector);
+}
+
+bool
+intel_dp_init_connector(struct intel_digital_port *dig_port,
+			struct intel_connector *intel_connector)
+{
+	struct drm_connector *connector = &intel_connector->base;
+	struct intel_dp *intel_dp = &dig_port->dp;
+	struct intel_encoder *intel_encoder = &dig_port->base;
+	struct drm_device *dev = intel_encoder->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	enum port port = intel_encoder->port;
+	enum phy phy = intel_port_to_phy(dev_priv, port);
+	int type;
+
+	/* Initialize the work for modeset in case of link train failure */
+	INIT_WORK(&intel_connector->modeset_retry_work,
+		  intel_dp_modeset_retry_work_fn);
+
+	if (drm_WARN(dev, dig_port->max_lanes < 1,
+		     "Not enough lanes (%d) for DP on [ENCODER:%d:%s]\n",
+		     dig_port->max_lanes, intel_encoder->base.base.id,
+		     intel_encoder->base.name))
+		return false;
+
+	intel_dp->reset_link_params = true;
+	intel_dp->pps.pps_pipe = INVALID_PIPE;
+	intel_dp->pps.active_pipe = INVALID_PIPE;
+
+	/* Preserve the current hw state. */
+	intel_dp->DP = intel_de_read(dev_priv, intel_dp->output_reg);
+	intel_dp->attached_connector = intel_connector;
+
+	if (intel_dp_is_port_edp(dev_priv, port)) {
+		/*
+		 * Currently we don't support eDP on TypeC ports, although in
+		 * theory it could work on TypeC legacy ports.
+		 */
+		drm_WARN_ON(dev, intel_phy_is_tc(dev_priv, phy));
+		type = DRM_MODE_CONNECTOR_eDP;
+		intel_encoder->type = INTEL_OUTPUT_EDP;
+
+		/* eDP only on port B and/or C on vlv/chv */
+		if (drm_WARN_ON(dev, (IS_VALLEYVIEW(dev_priv) ||
+				      IS_CHERRYVIEW(dev_priv)) &&
+				port != PORT_B && port != PORT_C))
+			return false;
+	} else {
+		type = DRM_MODE_CONNECTOR_DisplayPort;
+	}
+
+	intel_dp_set_default_sink_rates(intel_dp);
+	intel_dp_set_default_max_sink_lane_count(intel_dp);
+
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
+		intel_dp->pps.active_pipe = vlv_active_pipe(intel_dp);
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "Adding %s connector on [ENCODER:%d:%s]\n",
+		    type == DRM_MODE_CONNECTOR_eDP ? "eDP" : "DP",
+		    intel_encoder->base.base.id, intel_encoder->base.name);
+
+	drm_connector_init(dev, connector, &intel_dp_connector_funcs, type);
+	drm_connector_helper_add(connector, &intel_dp_connector_helper_funcs);
+
+	if (!HAS_GMCH(dev_priv))
+		connector->interlace_allowed = true;
+	connector->doublescan_allowed = 0;
+
+	intel_connector->polled = DRM_CONNECTOR_POLL_HPD;
+
+	intel_dp_aux_init(intel_dp);
+
+	intel_connector_attach_encoder(intel_connector, intel_encoder);
+
+	if (HAS_DDI(dev_priv))
+		intel_connector->get_hw_state = intel_ddi_connector_get_hw_state;
+	else
+		intel_connector->get_hw_state = intel_connector_get_hw_state;
+
+	if (!intel_edp_init_connector(intel_dp, intel_connector)) {
+		intel_dp_aux_fini(intel_dp);
+		goto fail;
+	}
+
+	intel_dp_set_source_rates(intel_dp);
+	intel_dp_set_common_rates(intel_dp);
+	intel_dp_reset_max_link_params(intel_dp);
+
+	/* init MST on ports that can support it */
+	intel_dp_mst_encoder_init(dig_port,
+				  intel_connector->base.base.id);
+
+	intel_dp_add_properties(intel_dp, connector);
+
+	if (is_hdcp_supported(dev_priv, port) && !intel_dp_is_edp(intel_dp)) {
+		int ret = intel_dp_hdcp_init(dig_port, intel_connector);
+		if (ret)
+			drm_dbg_kms(&dev_priv->drm,
+				    "HDCP init failed, skipping.\n");
+	}
+
+	/* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written
+	 * 0xd.  Failure to do so will result in spurious interrupts being
+	 * generated on the port when a cable is not attached.
+	 */
+	if (IS_G45(dev_priv)) {
+		u32 temp = intel_de_read(dev_priv, PEG_BAND_GAP_DATA);
+		intel_de_write(dev_priv, PEG_BAND_GAP_DATA,
+			       (temp & ~0xf) | 0xd);
+	}
+
+	intel_dp->frl.is_trained = false;
+	intel_dp->frl.trained_rate_gbps = 0;
+
+	intel_psr_init(intel_dp);
+
+	return true;
+
+fail:
+	drm_connector_cleanup(connector);
+
+	return false;
+}
+
+void intel_dp_mst_suspend(struct drm_i915_private *dev_priv)
+{
+	struct intel_encoder *encoder;
+
+	if (!HAS_DISPLAY(dev_priv))
+		return;
+
+	for_each_intel_encoder(&dev_priv->drm, encoder) {
+		struct intel_dp *intel_dp;
+
+		if (encoder->type != INTEL_OUTPUT_DDI)
+			continue;
+
+		intel_dp = enc_to_intel_dp(encoder);
+
+		if (!intel_dp_mst_source_support(intel_dp))
+			continue;
+
+		if (intel_dp->is_mst)
+			drm_dp_mst_topology_mgr_suspend(&intel_dp->mst_mgr);
+	}
+}
+
+void intel_dp_mst_resume(struct drm_i915_private *dev_priv)
+{
+	struct intel_encoder *encoder;
+
+	if (!HAS_DISPLAY(dev_priv))
+		return;
+
+	for_each_intel_encoder(&dev_priv->drm, encoder) {
+		struct intel_dp *intel_dp;
+		int ret;
+
+		if (encoder->type != INTEL_OUTPUT_DDI)
+			continue;
+
+		intel_dp = enc_to_intel_dp(encoder);
+
+		if (!intel_dp_mst_source_support(intel_dp))
+			continue;
+
+		ret = drm_dp_mst_topology_mgr_resume(&intel_dp->mst_mgr,
+						     true);
+		if (ret) {
+			intel_dp->is_mst = false;
+			drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr,
+							false);
+		}
+	}
+}
diff --git a/drivers/gpu/drm/i915/display/intel_dp.h b/drivers/gpu/drm/i915/display/intel_dp.h
new file mode 100644
index 000000000..a54902c71
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dp.h
@@ -0,0 +1,124 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_DP_H__
+#define __INTEL_DP_H__
+
+#include <linux/types.h>
+
+enum intel_output_format;
+enum pipe;
+enum port;
+struct drm_connector_state;
+struct drm_encoder;
+struct drm_i915_private;
+struct drm_modeset_acquire_ctx;
+struct drm_dp_vsc_sdp;
+struct intel_atomic_state;
+struct intel_connector;
+struct intel_crtc_state;
+struct intel_digital_port;
+struct intel_dp;
+struct intel_encoder;
+
+struct link_config_limits {
+	int min_rate, max_rate;
+	int min_lane_count, max_lane_count;
+	int min_bpp, max_bpp;
+};
+
+void intel_edp_fixup_vbt_bpp(struct intel_encoder *encoder, int pipe_bpp);
+void intel_dp_adjust_compliance_config(struct intel_dp *intel_dp,
+				       struct intel_crtc_state *pipe_config,
+				       struct link_config_limits *limits);
+bool intel_dp_limited_color_range(const struct intel_crtc_state *crtc_state,
+				  const struct drm_connector_state *conn_state);
+int intel_dp_min_bpp(enum intel_output_format output_format);
+bool intel_dp_init_connector(struct intel_digital_port *dig_port,
+			     struct intel_connector *intel_connector);
+void intel_dp_set_link_params(struct intel_dp *intel_dp,
+			      int link_rate, int lane_count);
+int intel_dp_get_link_train_fallback_values(struct intel_dp *intel_dp,
+					    int link_rate, u8 lane_count);
+int intel_dp_retrain_link(struct intel_encoder *encoder,
+			  struct drm_modeset_acquire_ctx *ctx);
+void intel_dp_set_power(struct intel_dp *intel_dp, u8 mode);
+void intel_dp_configure_protocol_converter(struct intel_dp *intel_dp,
+					   const struct intel_crtc_state *crtc_state);
+void intel_dp_sink_set_decompression_state(struct intel_dp *intel_dp,
+					   const struct intel_crtc_state *crtc_state,
+					   bool enable);
+void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder);
+void intel_dp_encoder_shutdown(struct intel_encoder *intel_encoder);
+void intel_dp_encoder_flush_work(struct drm_encoder *encoder);
+int intel_dp_compute_config(struct intel_encoder *encoder,
+			    struct intel_crtc_state *pipe_config,
+			    struct drm_connector_state *conn_state);
+bool intel_dp_is_edp(struct intel_dp *intel_dp);
+bool intel_dp_is_uhbr(const struct intel_crtc_state *crtc_state);
+bool intel_dp_is_port_edp(struct drm_i915_private *dev_priv, enum port port);
+enum irqreturn intel_dp_hpd_pulse(struct intel_digital_port *dig_port,
+				  bool long_hpd);
+void intel_edp_backlight_on(const struct intel_crtc_state *crtc_state,
+			    const struct drm_connector_state *conn_state);
+void intel_edp_backlight_off(const struct drm_connector_state *conn_state);
+void intel_edp_fixup_vbt_bpp(struct intel_encoder *encoder, int pipe_bpp);
+void intel_dp_mst_suspend(struct drm_i915_private *dev_priv);
+void intel_dp_mst_resume(struct drm_i915_private *dev_priv);
+int intel_dp_max_link_rate(struct intel_dp *intel_dp);
+int intel_dp_max_lane_count(struct intel_dp *intel_dp);
+int intel_dp_rate_select(struct intel_dp *intel_dp, int rate);
+
+void intel_dp_compute_rate(struct intel_dp *intel_dp, int port_clock,
+			   u8 *link_bw, u8 *rate_select);
+bool intel_dp_source_supports_tps3(struct drm_i915_private *i915);
+bool intel_dp_source_supports_tps4(struct drm_i915_private *i915);
+
+bool intel_dp_get_colorimetry_status(struct intel_dp *intel_dp);
+int intel_dp_link_required(int pixel_clock, int bpp);
+int intel_dp_max_data_rate(int max_link_rate, int max_lanes);
+bool intel_dp_can_bigjoiner(struct intel_dp *intel_dp);
+bool intel_dp_needs_vsc_sdp(const struct intel_crtc_state *crtc_state,
+			    const struct drm_connector_state *conn_state);
+void intel_dp_compute_psr_vsc_sdp(struct intel_dp *intel_dp,
+				  const struct intel_crtc_state *crtc_state,
+				  const struct drm_connector_state *conn_state,
+				  struct drm_dp_vsc_sdp *vsc);
+void intel_write_dp_vsc_sdp(struct intel_encoder *encoder,
+			    const struct intel_crtc_state *crtc_state,
+			    const struct drm_dp_vsc_sdp *vsc);
+void intel_dp_set_infoframes(struct intel_encoder *encoder, bool enable,
+			     const struct intel_crtc_state *crtc_state,
+			     const struct drm_connector_state *conn_state);
+void intel_read_dp_sdp(struct intel_encoder *encoder,
+		       struct intel_crtc_state *crtc_state,
+		       unsigned int type);
+bool intel_digital_port_connected(struct intel_encoder *encoder);
+
+static inline unsigned int intel_dp_unused_lane_mask(int lane_count)
+{
+	return ~((1 << lane_count) - 1) & 0xf;
+}
+
+u32 intel_dp_mode_to_fec_clock(u32 mode_clock);
+
+void intel_ddi_update_pipe(struct intel_atomic_state *state,
+			   struct intel_encoder *encoder,
+			   const struct intel_crtc_state *crtc_state,
+			   const struct drm_connector_state *conn_state);
+
+bool intel_dp_initial_fastset_check(struct intel_encoder *encoder,
+				    struct intel_crtc_state *crtc_state);
+void intel_dp_sync_state(struct intel_encoder *encoder,
+			 const struct intel_crtc_state *crtc_state);
+
+void intel_dp_check_frl_training(struct intel_dp *intel_dp);
+void intel_dp_pcon_dsc_configure(struct intel_dp *intel_dp,
+				 const struct intel_crtc_state *crtc_state);
+void intel_dp_phy_test(struct intel_encoder *encoder);
+
+void intel_dp_wait_source_oui(struct intel_dp *intel_dp);
+
+#endif /* __INTEL_DP_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_dp_aux.c b/drivers/gpu/drm/i915/display/intel_dp_aux.c
new file mode 100644
index 000000000..ab357161c
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dp_aux.c
@@ -0,0 +1,771 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2020-2021 Intel Corporation
+ */
+
+#include "i915_drv.h"
+#include "i915_trace.h"
+#include "intel_display_types.h"
+#include "intel_dp_aux.h"
+#include "intel_pps.h"
+#include "intel_tc.h"
+
+static u32 intel_dp_aux_pack(const u8 *src, int src_bytes)
+{
+	int i;
+	u32 v = 0;
+
+	if (src_bytes > 4)
+		src_bytes = 4;
+	for (i = 0; i < src_bytes; i++)
+		v |= ((u32)src[i]) << ((3 - i) * 8);
+	return v;
+}
+
+static void intel_dp_aux_unpack(u32 src, u8 *dst, int dst_bytes)
+{
+	int i;
+
+	if (dst_bytes > 4)
+		dst_bytes = 4;
+	for (i = 0; i < dst_bytes; i++)
+		dst[i] = src >> ((3 - i) * 8);
+}
+
+static u32
+intel_dp_aux_wait_done(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	i915_reg_t ch_ctl = intel_dp->aux_ch_ctl_reg(intel_dp);
+	const unsigned int timeout_ms = 10;
+	u32 status;
+	bool done;
+
+#define C (((status = intel_uncore_read_notrace(&i915->uncore, ch_ctl)) & DP_AUX_CH_CTL_SEND_BUSY) == 0)
+	done = wait_event_timeout(i915->display.gmbus.wait_queue, C,
+				  msecs_to_jiffies_timeout(timeout_ms));
+
+	/* just trace the final value */
+	trace_i915_reg_rw(false, ch_ctl, status, sizeof(status), true);
+
+	if (!done)
+		drm_err(&i915->drm,
+			"%s: did not complete or timeout within %ums (status 0x%08x)\n",
+			intel_dp->aux.name, timeout_ms, status);
+#undef C
+
+	return status;
+}
+
+static u32 g4x_get_aux_clock_divider(struct intel_dp *intel_dp, int index)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+	if (index)
+		return 0;
+
+	/*
+	 * The clock divider is based off the hrawclk, and would like to run at
+	 * 2MHz.  So, take the hrawclk value and divide by 2000 and use that
+	 */
+	return DIV_ROUND_CLOSEST(RUNTIME_INFO(dev_priv)->rawclk_freq, 2000);
+}
+
+static u32 ilk_get_aux_clock_divider(struct intel_dp *intel_dp, int index)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	u32 freq;
+
+	if (index)
+		return 0;
+
+	/*
+	 * The clock divider is based off the cdclk or PCH rawclk, and would
+	 * like to run at 2MHz.  So, take the cdclk or PCH rawclk value and
+	 * divide by 2000 and use that
+	 */
+	if (dig_port->aux_ch == AUX_CH_A)
+		freq = dev_priv->display.cdclk.hw.cdclk;
+	else
+		freq = RUNTIME_INFO(dev_priv)->rawclk_freq;
+	return DIV_ROUND_CLOSEST(freq, 2000);
+}
+
+static u32 hsw_get_aux_clock_divider(struct intel_dp *intel_dp, int index)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+
+	if (dig_port->aux_ch != AUX_CH_A && HAS_PCH_LPT_H(dev_priv)) {
+		/* Workaround for non-ULT HSW */
+		switch (index) {
+		case 0: return 63;
+		case 1: return 72;
+		default: return 0;
+		}
+	}
+
+	return ilk_get_aux_clock_divider(intel_dp, index);
+}
+
+static u32 skl_get_aux_clock_divider(struct intel_dp *intel_dp, int index)
+{
+	/*
+	 * SKL doesn't need us to program the AUX clock divider (Hardware will
+	 * derive the clock from CDCLK automatically). We still implement the
+	 * get_aux_clock_divider vfunc to plug-in into the existing code.
+	 */
+	return index ? 0 : 1;
+}
+
+static int intel_dp_aux_sync_len(void)
+{
+	int precharge = 16; /* 10-16 */
+	int preamble = 16;
+
+	return precharge + preamble;
+}
+
+static int intel_dp_aux_fw_sync_len(void)
+{
+	int precharge = 10; /* 10-16 */
+	int preamble = 8;
+
+	return precharge + preamble;
+}
+
+static int g4x_dp_aux_precharge_len(void)
+{
+	int precharge_min = 10;
+	int preamble = 16;
+
+	/* HW wants the length of the extra precharge in 2us units */
+	return (intel_dp_aux_sync_len() -
+		precharge_min - preamble) / 2;
+}
+
+static u32 g4x_get_aux_send_ctl(struct intel_dp *intel_dp,
+				int send_bytes,
+				u32 aux_clock_divider)
+{
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	struct drm_i915_private *dev_priv =
+			to_i915(dig_port->base.base.dev);
+	u32 timeout;
+
+	/* Max timeout value on G4x-BDW: 1.6ms */
+	if (IS_BROADWELL(dev_priv))
+		timeout = DP_AUX_CH_CTL_TIME_OUT_600us;
+	else
+		timeout = DP_AUX_CH_CTL_TIME_OUT_400us;
+
+	return DP_AUX_CH_CTL_SEND_BUSY |
+	       DP_AUX_CH_CTL_DONE |
+	       DP_AUX_CH_CTL_INTERRUPT |
+	       DP_AUX_CH_CTL_TIME_OUT_ERROR |
+	       timeout |
+	       DP_AUX_CH_CTL_RECEIVE_ERROR |
+	       (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) |
+	       (g4x_dp_aux_precharge_len() << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) |
+	       (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT);
+}
+
+static u32 skl_get_aux_send_ctl(struct intel_dp *intel_dp,
+				int send_bytes,
+				u32 unused)
+{
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	struct drm_i915_private *i915 =	to_i915(dig_port->base.base.dev);
+	u32 ret;
+
+	/*
+	 * Max timeout values:
+	 * SKL-GLK: 1.6ms
+	 * ICL+: 4ms
+	 */
+	ret = DP_AUX_CH_CTL_SEND_BUSY |
+	      DP_AUX_CH_CTL_DONE |
+	      DP_AUX_CH_CTL_INTERRUPT |
+	      DP_AUX_CH_CTL_TIME_OUT_ERROR |
+	      DP_AUX_CH_CTL_TIME_OUT_MAX |
+	      DP_AUX_CH_CTL_RECEIVE_ERROR |
+	      (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) |
+	      DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL(intel_dp_aux_fw_sync_len()) |
+	      DP_AUX_CH_CTL_SYNC_PULSE_SKL(intel_dp_aux_sync_len());
+
+	if (intel_tc_port_in_tbt_alt_mode(dig_port))
+		ret |= DP_AUX_CH_CTL_TBT_IO;
+
+	/*
+	 * Power request bit is already set during aux power well enable.
+	 * Preserve the bit across aux transactions.
+	 */
+	if (DISPLAY_VER(i915) >= 14)
+		ret |= XELPDP_DP_AUX_CH_CTL_POWER_REQUEST;
+
+	return ret;
+}
+
+static int
+intel_dp_aux_xfer(struct intel_dp *intel_dp,
+		  const u8 *send, int send_bytes,
+		  u8 *recv, int recv_size,
+		  u32 aux_send_ctl_flags)
+{
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	struct drm_i915_private *i915 =
+			to_i915(dig_port->base.base.dev);
+	struct intel_uncore *uncore = &i915->uncore;
+	enum phy phy = intel_port_to_phy(i915, dig_port->base.port);
+	bool is_tc_port = intel_phy_is_tc(i915, phy);
+	i915_reg_t ch_ctl, ch_data[5];
+	u32 aux_clock_divider;
+	enum intel_display_power_domain aux_domain;
+	intel_wakeref_t aux_wakeref;
+	intel_wakeref_t pps_wakeref;
+	int i, ret, recv_bytes;
+	int try, clock = 0;
+	u32 status;
+	bool vdd;
+
+	ch_ctl = intel_dp->aux_ch_ctl_reg(intel_dp);
+	for (i = 0; i < ARRAY_SIZE(ch_data); i++)
+		ch_data[i] = intel_dp->aux_ch_data_reg(intel_dp, i);
+
+	if (is_tc_port)
+		intel_tc_port_lock(dig_port);
+
+	aux_domain = intel_aux_power_domain(dig_port);
+
+	aux_wakeref = intel_display_power_get(i915, aux_domain);
+	pps_wakeref = intel_pps_lock(intel_dp);
+
+	/*
+	 * We will be called with VDD already enabled for dpcd/edid/oui reads.
+	 * In such cases we want to leave VDD enabled and it's up to upper layers
+	 * to turn it off. But for eg. i2c-dev access we need to turn it on/off
+	 * ourselves.
+	 */
+	vdd = intel_pps_vdd_on_unlocked(intel_dp);
+
+	/*
+	 * dp aux is extremely sensitive to irq latency, hence request the
+	 * lowest possible wakeup latency and so prevent the cpu from going into
+	 * deep sleep states.
+	 */
+	cpu_latency_qos_update_request(&intel_dp->pm_qos, 0);
+
+	intel_pps_check_power_unlocked(intel_dp);
+
+	/* Try to wait for any previous AUX channel activity */
+	for (try = 0; try < 3; try++) {
+		status = intel_uncore_read_notrace(uncore, ch_ctl);
+		if ((status & DP_AUX_CH_CTL_SEND_BUSY) == 0)
+			break;
+		msleep(1);
+	}
+	/* just trace the final value */
+	trace_i915_reg_rw(false, ch_ctl, status, sizeof(status), true);
+
+	if (try == 3) {
+		const u32 status = intel_uncore_read(uncore, ch_ctl);
+
+		if (status != intel_dp->aux_busy_last_status) {
+			drm_WARN(&i915->drm, 1,
+				 "%s: not started (status 0x%08x)\n",
+				 intel_dp->aux.name, status);
+			intel_dp->aux_busy_last_status = status;
+		}
+
+		ret = -EBUSY;
+		goto out;
+	}
+
+	/* Only 5 data registers! */
+	if (drm_WARN_ON(&i915->drm, send_bytes > 20 || recv_size > 20)) {
+		ret = -E2BIG;
+		goto out;
+	}
+
+	while ((aux_clock_divider = intel_dp->get_aux_clock_divider(intel_dp, clock++))) {
+		u32 send_ctl = intel_dp->get_aux_send_ctl(intel_dp,
+							  send_bytes,
+							  aux_clock_divider);
+
+		send_ctl |= aux_send_ctl_flags;
+
+		/* Must try at least 3 times according to DP spec */
+		for (try = 0; try < 5; try++) {
+			/* Load the send data into the aux channel data registers */
+			for (i = 0; i < send_bytes; i += 4)
+				intel_uncore_write(uncore,
+						   ch_data[i >> 2],
+						   intel_dp_aux_pack(send + i,
+								     send_bytes - i));
+
+			/* Send the command and wait for it to complete */
+			intel_uncore_write(uncore, ch_ctl, send_ctl);
+
+			status = intel_dp_aux_wait_done(intel_dp);
+
+			/* Clear done status and any errors */
+			intel_uncore_write(uncore,
+					   ch_ctl,
+					   status |
+					   DP_AUX_CH_CTL_DONE |
+					   DP_AUX_CH_CTL_TIME_OUT_ERROR |
+					   DP_AUX_CH_CTL_RECEIVE_ERROR);
+
+			/*
+			 * DP CTS 1.2 Core Rev 1.1, 4.2.1.1 & 4.2.1.2
+			 *   400us delay required for errors and timeouts
+			 *   Timeout errors from the HW already meet this
+			 *   requirement so skip to next iteration
+			 */
+			if (status & DP_AUX_CH_CTL_TIME_OUT_ERROR)
+				continue;
+
+			if (status & DP_AUX_CH_CTL_RECEIVE_ERROR) {
+				usleep_range(400, 500);
+				continue;
+			}
+			if (status & DP_AUX_CH_CTL_DONE)
+				goto done;
+		}
+	}
+
+	if ((status & DP_AUX_CH_CTL_DONE) == 0) {
+		drm_err(&i915->drm, "%s: not done (status 0x%08x)\n",
+			intel_dp->aux.name, status);
+		ret = -EBUSY;
+		goto out;
+	}
+
+done:
+	/*
+	 * Check for timeout or receive error. Timeouts occur when the sink is
+	 * not connected.
+	 */
+	if (status & DP_AUX_CH_CTL_RECEIVE_ERROR) {
+		drm_err(&i915->drm, "%s: receive error (status 0x%08x)\n",
+			intel_dp->aux.name, status);
+		ret = -EIO;
+		goto out;
+	}
+
+	/*
+	 * Timeouts occur when the device isn't connected, so they're "normal"
+	 * -- don't fill the kernel log with these
+	 */
+	if (status & DP_AUX_CH_CTL_TIME_OUT_ERROR) {
+		drm_dbg_kms(&i915->drm, "%s: timeout (status 0x%08x)\n",
+			    intel_dp->aux.name, status);
+		ret = -ETIMEDOUT;
+		goto out;
+	}
+
+	/* Unload any bytes sent back from the other side */
+	recv_bytes = ((status & DP_AUX_CH_CTL_MESSAGE_SIZE_MASK) >>
+		      DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT);
+
+	/*
+	 * By BSpec: "Message sizes of 0 or >20 are not allowed."
+	 * We have no idea of what happened so we return -EBUSY so
+	 * drm layer takes care for the necessary retries.
+	 */
+	if (recv_bytes == 0 || recv_bytes > 20) {
+		drm_dbg_kms(&i915->drm,
+			    "%s: Forbidden recv_bytes = %d on aux transaction\n",
+			    intel_dp->aux.name, recv_bytes);
+		ret = -EBUSY;
+		goto out;
+	}
+
+	if (recv_bytes > recv_size)
+		recv_bytes = recv_size;
+
+	for (i = 0; i < recv_bytes; i += 4)
+		intel_dp_aux_unpack(intel_uncore_read(uncore, ch_data[i >> 2]),
+				    recv + i, recv_bytes - i);
+
+	ret = recv_bytes;
+out:
+	cpu_latency_qos_update_request(&intel_dp->pm_qos, PM_QOS_DEFAULT_VALUE);
+
+	if (vdd)
+		intel_pps_vdd_off_unlocked(intel_dp, false);
+
+	intel_pps_unlock(intel_dp, pps_wakeref);
+	intel_display_power_put_async(i915, aux_domain, aux_wakeref);
+
+	if (is_tc_port)
+		intel_tc_port_unlock(dig_port);
+
+	return ret;
+}
+
+#define BARE_ADDRESS_SIZE	3
+#define HEADER_SIZE		(BARE_ADDRESS_SIZE + 1)
+
+static void
+intel_dp_aux_header(u8 txbuf[HEADER_SIZE],
+		    const struct drm_dp_aux_msg *msg)
+{
+	txbuf[0] = (msg->request << 4) | ((msg->address >> 16) & 0xf);
+	txbuf[1] = (msg->address >> 8) & 0xff;
+	txbuf[2] = msg->address & 0xff;
+	txbuf[3] = msg->size - 1;
+}
+
+static u32 intel_dp_aux_xfer_flags(const struct drm_dp_aux_msg *msg)
+{
+	/*
+	 * If we're trying to send the HDCP Aksv, we need to set a the Aksv
+	 * select bit to inform the hardware to send the Aksv after our header
+	 * since we can't access that data from software.
+	 */
+	if ((msg->request & ~DP_AUX_I2C_MOT) == DP_AUX_NATIVE_WRITE &&
+	    msg->address == DP_AUX_HDCP_AKSV)
+		return DP_AUX_CH_CTL_AUX_AKSV_SELECT;
+
+	return 0;
+}
+
+static ssize_t
+intel_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
+{
+	struct intel_dp *intel_dp = container_of(aux, struct intel_dp, aux);
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	u8 txbuf[20], rxbuf[20];
+	size_t txsize, rxsize;
+	u32 flags = intel_dp_aux_xfer_flags(msg);
+	int ret;
+
+	intel_dp_aux_header(txbuf, msg);
+
+	switch (msg->request & ~DP_AUX_I2C_MOT) {
+	case DP_AUX_NATIVE_WRITE:
+	case DP_AUX_I2C_WRITE:
+	case DP_AUX_I2C_WRITE_STATUS_UPDATE:
+		txsize = msg->size ? HEADER_SIZE + msg->size : BARE_ADDRESS_SIZE;
+		rxsize = 2; /* 0 or 1 data bytes */
+
+		if (drm_WARN_ON(&i915->drm, txsize > 20))
+			return -E2BIG;
+
+		drm_WARN_ON(&i915->drm, !msg->buffer != !msg->size);
+
+		if (msg->buffer)
+			memcpy(txbuf + HEADER_SIZE, msg->buffer, msg->size);
+
+		ret = intel_dp_aux_xfer(intel_dp, txbuf, txsize,
+					rxbuf, rxsize, flags);
+		if (ret > 0) {
+			msg->reply = rxbuf[0] >> 4;
+
+			if (ret > 1) {
+				/* Number of bytes written in a short write. */
+				ret = clamp_t(int, rxbuf[1], 0, msg->size);
+			} else {
+				/* Return payload size. */
+				ret = msg->size;
+			}
+		}
+		break;
+
+	case DP_AUX_NATIVE_READ:
+	case DP_AUX_I2C_READ:
+		txsize = msg->size ? HEADER_SIZE : BARE_ADDRESS_SIZE;
+		rxsize = msg->size + 1;
+
+		if (drm_WARN_ON(&i915->drm, rxsize > 20))
+			return -E2BIG;
+
+		ret = intel_dp_aux_xfer(intel_dp, txbuf, txsize,
+					rxbuf, rxsize, flags);
+		if (ret > 0) {
+			msg->reply = rxbuf[0] >> 4;
+			/*
+			 * Assume happy day, and copy the data. The caller is
+			 * expected to check msg->reply before touching it.
+			 *
+			 * Return payload size.
+			 */
+			ret--;
+			memcpy(msg->buffer, rxbuf + 1, ret);
+		}
+		break;
+
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+	return ret;
+}
+
+static i915_reg_t g4x_aux_ctl_reg(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	enum aux_ch aux_ch = dig_port->aux_ch;
+
+	switch (aux_ch) {
+	case AUX_CH_B:
+	case AUX_CH_C:
+	case AUX_CH_D:
+		return DP_AUX_CH_CTL(aux_ch);
+	default:
+		MISSING_CASE(aux_ch);
+		return DP_AUX_CH_CTL(AUX_CH_B);
+	}
+}
+
+static i915_reg_t g4x_aux_data_reg(struct intel_dp *intel_dp, int index)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	enum aux_ch aux_ch = dig_port->aux_ch;
+
+	switch (aux_ch) {
+	case AUX_CH_B:
+	case AUX_CH_C:
+	case AUX_CH_D:
+		return DP_AUX_CH_DATA(aux_ch, index);
+	default:
+		MISSING_CASE(aux_ch);
+		return DP_AUX_CH_DATA(AUX_CH_B, index);
+	}
+}
+
+static i915_reg_t ilk_aux_ctl_reg(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	enum aux_ch aux_ch = dig_port->aux_ch;
+
+	switch (aux_ch) {
+	case AUX_CH_A:
+		return DP_AUX_CH_CTL(aux_ch);
+	case AUX_CH_B:
+	case AUX_CH_C:
+	case AUX_CH_D:
+		return PCH_DP_AUX_CH_CTL(aux_ch);
+	default:
+		MISSING_CASE(aux_ch);
+		return DP_AUX_CH_CTL(AUX_CH_A);
+	}
+}
+
+static i915_reg_t ilk_aux_data_reg(struct intel_dp *intel_dp, int index)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	enum aux_ch aux_ch = dig_port->aux_ch;
+
+	switch (aux_ch) {
+	case AUX_CH_A:
+		return DP_AUX_CH_DATA(aux_ch, index);
+	case AUX_CH_B:
+	case AUX_CH_C:
+	case AUX_CH_D:
+		return PCH_DP_AUX_CH_DATA(aux_ch, index);
+	default:
+		MISSING_CASE(aux_ch);
+		return DP_AUX_CH_DATA(AUX_CH_A, index);
+	}
+}
+
+static i915_reg_t skl_aux_ctl_reg(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	enum aux_ch aux_ch = dig_port->aux_ch;
+
+	switch (aux_ch) {
+	case AUX_CH_A:
+	case AUX_CH_B:
+	case AUX_CH_C:
+	case AUX_CH_D:
+	case AUX_CH_E:
+	case AUX_CH_F:
+		return DP_AUX_CH_CTL(aux_ch);
+	default:
+		MISSING_CASE(aux_ch);
+		return DP_AUX_CH_CTL(AUX_CH_A);
+	}
+}
+
+static i915_reg_t skl_aux_data_reg(struct intel_dp *intel_dp, int index)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	enum aux_ch aux_ch = dig_port->aux_ch;
+
+	switch (aux_ch) {
+	case AUX_CH_A:
+	case AUX_CH_B:
+	case AUX_CH_C:
+	case AUX_CH_D:
+	case AUX_CH_E:
+	case AUX_CH_F:
+		return DP_AUX_CH_DATA(aux_ch, index);
+	default:
+		MISSING_CASE(aux_ch);
+		return DP_AUX_CH_DATA(AUX_CH_A, index);
+	}
+}
+
+static i915_reg_t tgl_aux_ctl_reg(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	enum aux_ch aux_ch = dig_port->aux_ch;
+
+	switch (aux_ch) {
+	case AUX_CH_A:
+	case AUX_CH_B:
+	case AUX_CH_C:
+	case AUX_CH_USBC1:
+	case AUX_CH_USBC2:
+	case AUX_CH_USBC3:
+	case AUX_CH_USBC4:
+	case AUX_CH_USBC5:  /* aka AUX_CH_D_XELPD */
+	case AUX_CH_USBC6:  /* aka AUX_CH_E_XELPD */
+		return DP_AUX_CH_CTL(aux_ch);
+	default:
+		MISSING_CASE(aux_ch);
+		return DP_AUX_CH_CTL(AUX_CH_A);
+	}
+}
+
+static i915_reg_t tgl_aux_data_reg(struct intel_dp *intel_dp, int index)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	enum aux_ch aux_ch = dig_port->aux_ch;
+
+	switch (aux_ch) {
+	case AUX_CH_A:
+	case AUX_CH_B:
+	case AUX_CH_C:
+	case AUX_CH_USBC1:
+	case AUX_CH_USBC2:
+	case AUX_CH_USBC3:
+	case AUX_CH_USBC4:
+	case AUX_CH_USBC5:  /* aka AUX_CH_D_XELPD */
+	case AUX_CH_USBC6:  /* aka AUX_CH_E_XELPD */
+		return DP_AUX_CH_DATA(aux_ch, index);
+	default:
+		MISSING_CASE(aux_ch);
+		return DP_AUX_CH_DATA(AUX_CH_A, index);
+	}
+}
+
+static i915_reg_t xelpdp_aux_ctl_reg(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	enum aux_ch aux_ch = dig_port->aux_ch;
+
+	switch (aux_ch) {
+	case AUX_CH_A:
+	case AUX_CH_B:
+	case AUX_CH_USBC1:
+	case AUX_CH_USBC2:
+	case AUX_CH_USBC3:
+	case AUX_CH_USBC4:
+		return XELPDP_DP_AUX_CH_CTL(aux_ch);
+	default:
+		MISSING_CASE(aux_ch);
+		return XELPDP_DP_AUX_CH_CTL(AUX_CH_A);
+	}
+}
+
+static i915_reg_t xelpdp_aux_data_reg(struct intel_dp *intel_dp, int index)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	enum aux_ch aux_ch = dig_port->aux_ch;
+
+	switch (aux_ch) {
+	case AUX_CH_A:
+	case AUX_CH_B:
+	case AUX_CH_USBC1:
+	case AUX_CH_USBC2:
+	case AUX_CH_USBC3:
+	case AUX_CH_USBC4:
+		return XELPDP_DP_AUX_CH_DATA(aux_ch, index);
+	default:
+		MISSING_CASE(aux_ch);
+		return XELPDP_DP_AUX_CH_DATA(AUX_CH_A, index);
+	}
+}
+
+void intel_dp_aux_fini(struct intel_dp *intel_dp)
+{
+	if (cpu_latency_qos_request_active(&intel_dp->pm_qos))
+		cpu_latency_qos_remove_request(&intel_dp->pm_qos);
+
+	kfree(intel_dp->aux.name);
+}
+
+void intel_dp_aux_init(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	struct intel_encoder *encoder = &dig_port->base;
+	enum aux_ch aux_ch = dig_port->aux_ch;
+
+	if (DISPLAY_VER(dev_priv) >= 14) {
+		intel_dp->aux_ch_ctl_reg = xelpdp_aux_ctl_reg;
+		intel_dp->aux_ch_data_reg = xelpdp_aux_data_reg;
+	} else if (DISPLAY_VER(dev_priv) >= 12) {
+		intel_dp->aux_ch_ctl_reg = tgl_aux_ctl_reg;
+		intel_dp->aux_ch_data_reg = tgl_aux_data_reg;
+	} else if (DISPLAY_VER(dev_priv) >= 9) {
+		intel_dp->aux_ch_ctl_reg = skl_aux_ctl_reg;
+		intel_dp->aux_ch_data_reg = skl_aux_data_reg;
+	} else if (HAS_PCH_SPLIT(dev_priv)) {
+		intel_dp->aux_ch_ctl_reg = ilk_aux_ctl_reg;
+		intel_dp->aux_ch_data_reg = ilk_aux_data_reg;
+	} else {
+		intel_dp->aux_ch_ctl_reg = g4x_aux_ctl_reg;
+		intel_dp->aux_ch_data_reg = g4x_aux_data_reg;
+	}
+
+	if (DISPLAY_VER(dev_priv) >= 9)
+		intel_dp->get_aux_clock_divider = skl_get_aux_clock_divider;
+	else if (IS_BROADWELL(dev_priv) || IS_HASWELL(dev_priv))
+		intel_dp->get_aux_clock_divider = hsw_get_aux_clock_divider;
+	else if (HAS_PCH_SPLIT(dev_priv))
+		intel_dp->get_aux_clock_divider = ilk_get_aux_clock_divider;
+	else
+		intel_dp->get_aux_clock_divider = g4x_get_aux_clock_divider;
+
+	if (DISPLAY_VER(dev_priv) >= 9)
+		intel_dp->get_aux_send_ctl = skl_get_aux_send_ctl;
+	else
+		intel_dp->get_aux_send_ctl = g4x_get_aux_send_ctl;
+
+	intel_dp->aux.drm_dev = &dev_priv->drm;
+	drm_dp_aux_init(&intel_dp->aux);
+
+	/* Failure to allocate our preferred name is not critical */
+	if (DISPLAY_VER(dev_priv) >= 13 && aux_ch >= AUX_CH_D_XELPD)
+		intel_dp->aux.name = kasprintf(GFP_KERNEL, "AUX %c/%s",
+					       aux_ch_name(aux_ch - AUX_CH_D_XELPD + AUX_CH_D),
+					       encoder->base.name);
+	else if (DISPLAY_VER(dev_priv) >= 12 && aux_ch >= AUX_CH_USBC1)
+		intel_dp->aux.name = kasprintf(GFP_KERNEL, "AUX USBC%c/%s",
+					       aux_ch - AUX_CH_USBC1 + '1',
+					       encoder->base.name);
+	else
+		intel_dp->aux.name = kasprintf(GFP_KERNEL, "AUX %c/%s",
+					       aux_ch_name(aux_ch),
+					       encoder->base.name);
+
+	intel_dp->aux.transfer = intel_dp_aux_transfer;
+	cpu_latency_qos_add_request(&intel_dp->pm_qos, PM_QOS_DEFAULT_VALUE);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_dp_aux.h b/drivers/gpu/drm/i915/display/intel_dp_aux.h
new file mode 100644
index 000000000..738577537
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dp_aux.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2020-2021 Intel Corporation
+ */
+
+#ifndef __INTEL_DP_AUX_H__
+#define __INTEL_DP_AUX_H__
+
+struct intel_dp;
+
+void intel_dp_aux_fini(struct intel_dp *intel_dp);
+void intel_dp_aux_init(struct intel_dp *intel_dp);
+
+#endif /* __INTEL_DP_AUX_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c b/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
new file mode 100644
index 000000000..83af95bce
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
@@ -0,0 +1,519 @@
+/*
+ * Copyright © 2015 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ */
+
+/*
+ * Laptops with Intel GPUs which have panels that support controlling the
+ * backlight through DP AUX can actually use two different interfaces: Intel's
+ * proprietary DP AUX backlight interface, and the standard VESA backlight
+ * interface. Unfortunately, at the time of writing this a lot of laptops will
+ * advertise support for the standard VESA backlight interface when they
+ * don't properly support it. However, on these systems the Intel backlight
+ * interface generally does work properly. Additionally, these systems will
+ * usually just indicate that they use PWM backlight controls in their VBIOS
+ * for some reason.
+ */
+
+#include "i915_drv.h"
+#include "intel_backlight.h"
+#include "intel_display_types.h"
+#include "intel_dp.h"
+#include "intel_dp_aux_backlight.h"
+
+/* TODO:
+ * Implement HDR, right now we just implement the bare minimum to bring us back into SDR mode so we
+ * can make people's backlights work in the mean time
+ */
+
+/*
+ * DP AUX registers for Intel's proprietary HDR backlight interface. We define
+ * them here since we'll likely be the only driver to ever use these.
+ */
+#define INTEL_EDP_HDR_TCON_CAP0                                        0x340
+
+#define INTEL_EDP_HDR_TCON_CAP1                                        0x341
+# define INTEL_EDP_HDR_TCON_2084_DECODE_CAP                           BIT(0)
+# define INTEL_EDP_HDR_TCON_2020_GAMUT_CAP                            BIT(1)
+# define INTEL_EDP_HDR_TCON_TONE_MAPPING_CAP                          BIT(2)
+# define INTEL_EDP_HDR_TCON_SEGMENTED_BACKLIGHT_CAP                   BIT(3)
+# define INTEL_EDP_HDR_TCON_BRIGHTNESS_NITS_CAP                       BIT(4)
+# define INTEL_EDP_HDR_TCON_OPTIMIZATION_CAP                          BIT(5)
+# define INTEL_EDP_HDR_TCON_SDP_COLORIMETRY_CAP                       BIT(6)
+# define INTEL_EDP_HDR_TCON_SRGB_TO_PANEL_GAMUT_CONVERSION_CAP        BIT(7)
+
+#define INTEL_EDP_HDR_TCON_CAP2                                        0x342
+# define INTEL_EDP_SDR_TCON_BRIGHTNESS_AUX_CAP                        BIT(0)
+
+#define INTEL_EDP_HDR_TCON_CAP3                                        0x343
+
+#define INTEL_EDP_HDR_GETSET_CTRL_PARAMS                               0x344
+# define INTEL_EDP_HDR_TCON_2084_DECODE_ENABLE                        BIT(0)
+# define INTEL_EDP_HDR_TCON_2020_GAMUT_ENABLE                         BIT(1)
+# define INTEL_EDP_HDR_TCON_TONE_MAPPING_ENABLE                       BIT(2) /* Pre-TGL+ */
+# define INTEL_EDP_HDR_TCON_SEGMENTED_BACKLIGHT_ENABLE                BIT(3)
+# define INTEL_EDP_HDR_TCON_BRIGHTNESS_AUX_ENABLE                     BIT(4)
+# define INTEL_EDP_HDR_TCON_SRGB_TO_PANEL_GAMUT_ENABLE                BIT(5)
+/* Bit 6 is reserved */
+# define INTEL_EDP_HDR_TCON_SDP_COLORIMETRY_ENABLE                    BIT(7)
+
+#define INTEL_EDP_HDR_CONTENT_LUMINANCE                                0x346 /* Pre-TGL+ */
+#define INTEL_EDP_HDR_PANEL_LUMINANCE_OVERRIDE                         0x34A
+#define INTEL_EDP_SDR_LUMINANCE_LEVEL                                  0x352
+#define INTEL_EDP_BRIGHTNESS_NITS_LSB                                  0x354
+#define INTEL_EDP_BRIGHTNESS_NITS_MSB                                  0x355
+#define INTEL_EDP_BRIGHTNESS_DELAY_FRAMES                              0x356
+#define INTEL_EDP_BRIGHTNESS_PER_FRAME_STEPS                           0x357
+
+#define INTEL_EDP_BRIGHTNESS_OPTIMIZATION_0                            0x358
+# define INTEL_EDP_TCON_USAGE_MASK                             GENMASK(0, 3)
+# define INTEL_EDP_TCON_USAGE_UNKNOWN                                    0x0
+# define INTEL_EDP_TCON_USAGE_DESKTOP                                    0x1
+# define INTEL_EDP_TCON_USAGE_FULL_SCREEN_MEDIA                          0x2
+# define INTEL_EDP_TCON_USAGE_FULL_SCREEN_GAMING                         0x3
+# define INTEL_EDP_TCON_POWER_MASK                                    BIT(4)
+# define INTEL_EDP_TCON_POWER_DC                                    (0 << 4)
+# define INTEL_EDP_TCON_POWER_AC                                    (1 << 4)
+# define INTEL_EDP_TCON_OPTIMIZATION_STRENGTH_MASK             GENMASK(5, 7)
+
+#define INTEL_EDP_BRIGHTNESS_OPTIMIZATION_1                            0x359
+
+enum intel_dp_aux_backlight_modparam {
+	INTEL_DP_AUX_BACKLIGHT_AUTO = -1,
+	INTEL_DP_AUX_BACKLIGHT_OFF = 0,
+	INTEL_DP_AUX_BACKLIGHT_ON = 1,
+	INTEL_DP_AUX_BACKLIGHT_FORCE_VESA = 2,
+	INTEL_DP_AUX_BACKLIGHT_FORCE_INTEL = 3,
+};
+
+/* Intel EDP backlight callbacks */
+static bool
+intel_dp_aux_supports_hdr_backlight(struct intel_connector *connector)
+{
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(connector->encoder);
+	struct drm_dp_aux *aux = &intel_dp->aux;
+	struct intel_panel *panel = &connector->panel;
+	int ret;
+	u8 tcon_cap[4];
+
+	intel_dp_wait_source_oui(intel_dp);
+
+	ret = drm_dp_dpcd_read(aux, INTEL_EDP_HDR_TCON_CAP0, tcon_cap, sizeof(tcon_cap));
+	if (ret != sizeof(tcon_cap))
+		return false;
+
+	if (!(tcon_cap[1] & INTEL_EDP_HDR_TCON_BRIGHTNESS_NITS_CAP))
+		return false;
+
+	if (tcon_cap[0] >= 1) {
+		drm_dbg_kms(&i915->drm, "Detected Intel HDR backlight interface version %d\n",
+			    tcon_cap[0]);
+	} else {
+		drm_dbg_kms(&i915->drm, "Detected unsupported HDR backlight interface version %d\n",
+			    tcon_cap[0]);
+		return false;
+	}
+
+	/*
+	 * If we don't have HDR static metadata there is no way to
+	 * runtime detect used range for nits based control. For now
+	 * do not use Intel proprietary eDP backlight control if we
+	 * don't have this data in panel EDID. In case we find panel
+	 * which supports only nits based control, but doesn't provide
+	 * HDR static metadata we need to start maintaining table of
+	 * ranges for such panels.
+	 */
+	if (i915->params.enable_dpcd_backlight != INTEL_DP_AUX_BACKLIGHT_FORCE_INTEL &&
+	    !(connector->base.hdr_sink_metadata.hdmi_type1.metadata_type &
+	      BIT(HDMI_STATIC_METADATA_TYPE1))) {
+		drm_info(&i915->drm,
+			 "Panel is missing HDR static metadata. Possible support for Intel HDR backlight interface is not used. If your backlight controls don't work try booting with i915.enable_dpcd_backlight=%d. needs this, please file a _new_ bug report on drm/i915, see " FDO_BUG_URL " for details.\n",
+			 INTEL_DP_AUX_BACKLIGHT_FORCE_INTEL);
+		return false;
+	}
+
+	panel->backlight.edp.intel.sdr_uses_aux =
+		tcon_cap[2] & INTEL_EDP_SDR_TCON_BRIGHTNESS_AUX_CAP;
+
+	return true;
+}
+
+static u32
+intel_dp_aux_hdr_get_backlight(struct intel_connector *connector, enum pipe pipe)
+{
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+	struct intel_dp *intel_dp = enc_to_intel_dp(connector->encoder);
+	u8 tmp;
+	u8 buf[2] = { 0 };
+
+	if (drm_dp_dpcd_readb(&intel_dp->aux, INTEL_EDP_HDR_GETSET_CTRL_PARAMS, &tmp) != 1) {
+		drm_err(&i915->drm, "Failed to read current backlight mode from DPCD\n");
+		return 0;
+	}
+
+	if (!(tmp & INTEL_EDP_HDR_TCON_BRIGHTNESS_AUX_ENABLE)) {
+		if (!panel->backlight.edp.intel.sdr_uses_aux) {
+			u32 pwm_level = panel->backlight.pwm_funcs->get(connector, pipe);
+
+			return intel_backlight_level_from_pwm(connector, pwm_level);
+		}
+
+		/* Assume 100% brightness if backlight controls aren't enabled yet */
+		return panel->backlight.max;
+	}
+
+	if (drm_dp_dpcd_read(&intel_dp->aux, INTEL_EDP_BRIGHTNESS_NITS_LSB, buf,
+			     sizeof(buf)) != sizeof(buf)) {
+		drm_err(&i915->drm, "Failed to read brightness from DPCD\n");
+		return 0;
+	}
+
+	return (buf[1] << 8 | buf[0]);
+}
+
+static void
+intel_dp_aux_hdr_set_aux_backlight(const struct drm_connector_state *conn_state, u32 level)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct drm_device *dev = connector->base.dev;
+	struct intel_dp *intel_dp = enc_to_intel_dp(connector->encoder);
+	u8 buf[4] = { 0 };
+
+	buf[0] = level & 0xFF;
+	buf[1] = (level & 0xFF00) >> 8;
+
+	if (drm_dp_dpcd_write(&intel_dp->aux, INTEL_EDP_BRIGHTNESS_NITS_LSB, buf,
+			      sizeof(buf)) != sizeof(buf))
+		drm_err(dev, "Failed to write brightness level to DPCD\n");
+}
+
+static void
+intel_dp_aux_hdr_set_backlight(const struct drm_connector_state *conn_state, u32 level)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct intel_panel *panel = &connector->panel;
+
+	if (panel->backlight.edp.intel.sdr_uses_aux) {
+		intel_dp_aux_hdr_set_aux_backlight(conn_state, level);
+	} else {
+		const u32 pwm_level = intel_backlight_level_to_pwm(connector, level);
+
+		intel_backlight_set_pwm_level(conn_state, pwm_level);
+	}
+}
+
+static void
+intel_dp_aux_hdr_enable_backlight(const struct intel_crtc_state *crtc_state,
+				  const struct drm_connector_state *conn_state, u32 level)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct intel_panel *panel = &connector->panel;
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(connector->encoder);
+	int ret;
+	u8 old_ctrl, ctrl;
+
+	intel_dp_wait_source_oui(intel_dp);
+
+	ret = drm_dp_dpcd_readb(&intel_dp->aux, INTEL_EDP_HDR_GETSET_CTRL_PARAMS, &old_ctrl);
+	if (ret != 1) {
+		drm_err(&i915->drm, "Failed to read current backlight control mode: %d\n", ret);
+		return;
+	}
+
+	ctrl = old_ctrl;
+	if (panel->backlight.edp.intel.sdr_uses_aux) {
+		ctrl |= INTEL_EDP_HDR_TCON_BRIGHTNESS_AUX_ENABLE;
+		intel_dp_aux_hdr_set_aux_backlight(conn_state, level);
+	} else {
+		u32 pwm_level = intel_backlight_level_to_pwm(connector, level);
+
+		panel->backlight.pwm_funcs->enable(crtc_state, conn_state, pwm_level);
+
+		ctrl &= ~INTEL_EDP_HDR_TCON_BRIGHTNESS_AUX_ENABLE;
+	}
+
+	if (ctrl != old_ctrl)
+		if (drm_dp_dpcd_writeb(&intel_dp->aux, INTEL_EDP_HDR_GETSET_CTRL_PARAMS, ctrl) != 1)
+			drm_err(&i915->drm, "Failed to configure DPCD brightness controls\n");
+}
+
+static void
+intel_dp_aux_hdr_disable_backlight(const struct drm_connector_state *conn_state, u32 level)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct intel_panel *panel = &connector->panel;
+
+	/* Nothing to do for AUX based backlight controls */
+	if (panel->backlight.edp.intel.sdr_uses_aux)
+		return;
+
+	/* Note we want the actual pwm_level to be 0, regardless of pwm_min */
+	panel->backlight.pwm_funcs->disable(conn_state, intel_backlight_invert_pwm_level(connector, 0));
+}
+
+static int
+intel_dp_aux_hdr_setup_backlight(struct intel_connector *connector, enum pipe pipe)
+{
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+	struct intel_panel *panel = &connector->panel;
+	struct drm_luminance_range_info *luminance_range =
+		&connector->base.display_info.luminance_range;
+	int ret;
+
+	if (panel->backlight.edp.intel.sdr_uses_aux) {
+		drm_dbg_kms(&i915->drm, "SDR backlight is controlled through DPCD\n");
+	} else {
+		drm_dbg_kms(&i915->drm, "SDR backlight is controlled through PWM\n");
+
+		ret = panel->backlight.pwm_funcs->setup(connector, pipe);
+		if (ret < 0) {
+			drm_err(&i915->drm,
+				"Failed to setup SDR backlight controls through PWM: %d\n", ret);
+			return ret;
+		}
+	}
+
+	if (luminance_range->max_luminance) {
+		panel->backlight.max = luminance_range->max_luminance;
+		panel->backlight.min = luminance_range->min_luminance;
+	} else {
+		panel->backlight.max = 512;
+		panel->backlight.min = 0;
+	}
+
+	drm_dbg_kms(&i915->drm, "Using backlight range %d..%d\n", panel->backlight.min,
+		    panel->backlight.max);
+
+	panel->backlight.level = intel_dp_aux_hdr_get_backlight(connector, pipe);
+	panel->backlight.enabled = panel->backlight.level != 0;
+
+	return 0;
+}
+
+/* VESA backlight callbacks */
+static u32 intel_dp_aux_vesa_get_backlight(struct intel_connector *connector, enum pipe unused)
+{
+	return connector->panel.backlight.level;
+}
+
+static void
+intel_dp_aux_vesa_set_backlight(const struct drm_connector_state *conn_state, u32 level)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct intel_panel *panel = &connector->panel;
+	struct intel_dp *intel_dp = enc_to_intel_dp(connector->encoder);
+
+	if (!panel->backlight.edp.vesa.info.aux_set) {
+		const u32 pwm_level = intel_backlight_level_to_pwm(connector, level);
+
+		intel_backlight_set_pwm_level(conn_state, pwm_level);
+	}
+
+	drm_edp_backlight_set_level(&intel_dp->aux, &panel->backlight.edp.vesa.info, level);
+}
+
+static void
+intel_dp_aux_vesa_enable_backlight(const struct intel_crtc_state *crtc_state,
+				   const struct drm_connector_state *conn_state, u32 level)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct intel_panel *panel = &connector->panel;
+	struct intel_dp *intel_dp = enc_to_intel_dp(connector->encoder);
+
+	if (!panel->backlight.edp.vesa.info.aux_enable) {
+		u32 pwm_level;
+
+		if (!panel->backlight.edp.vesa.info.aux_set)
+			pwm_level = intel_backlight_level_to_pwm(connector, level);
+		else
+			pwm_level = intel_backlight_invert_pwm_level(connector,
+								     panel->backlight.pwm_level_max);
+
+		panel->backlight.pwm_funcs->enable(crtc_state, conn_state, pwm_level);
+	}
+
+	drm_edp_backlight_enable(&intel_dp->aux, &panel->backlight.edp.vesa.info, level);
+}
+
+static void intel_dp_aux_vesa_disable_backlight(const struct drm_connector_state *old_conn_state,
+						u32 level)
+{
+	struct intel_connector *connector = to_intel_connector(old_conn_state->connector);
+	struct intel_panel *panel = &connector->panel;
+	struct intel_dp *intel_dp = enc_to_intel_dp(connector->encoder);
+
+	drm_edp_backlight_disable(&intel_dp->aux, &panel->backlight.edp.vesa.info);
+
+	if (!panel->backlight.edp.vesa.info.aux_enable)
+		panel->backlight.pwm_funcs->disable(old_conn_state,
+						    intel_backlight_invert_pwm_level(connector, 0));
+}
+
+static int intel_dp_aux_vesa_setup_backlight(struct intel_connector *connector, enum pipe pipe)
+{
+	struct intel_dp *intel_dp = intel_attached_dp(connector);
+	struct intel_panel *panel = &connector->panel;
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	u16 current_level;
+	u8 current_mode;
+	int ret;
+
+	ret = drm_edp_backlight_init(&intel_dp->aux, &panel->backlight.edp.vesa.info,
+				     panel->vbt.backlight.pwm_freq_hz, intel_dp->edp_dpcd,
+				     &current_level, &current_mode);
+	if (ret < 0)
+		return ret;
+
+	if (!panel->backlight.edp.vesa.info.aux_set || !panel->backlight.edp.vesa.info.aux_enable) {
+		ret = panel->backlight.pwm_funcs->setup(connector, pipe);
+		if (ret < 0) {
+			drm_err(&i915->drm,
+				"Failed to setup PWM backlight controls for eDP backlight: %d\n",
+				ret);
+			return ret;
+		}
+	}
+
+	if (panel->backlight.edp.vesa.info.aux_set) {
+		panel->backlight.max = panel->backlight.edp.vesa.info.max;
+		panel->backlight.min = 0;
+		if (current_mode == DP_EDP_BACKLIGHT_CONTROL_MODE_DPCD) {
+			panel->backlight.level = current_level;
+			panel->backlight.enabled = panel->backlight.level != 0;
+		} else {
+			panel->backlight.level = panel->backlight.max;
+			panel->backlight.enabled = false;
+		}
+	} else {
+		panel->backlight.max = panel->backlight.pwm_level_max;
+		panel->backlight.min = panel->backlight.pwm_level_min;
+		if (current_mode == DP_EDP_BACKLIGHT_CONTROL_MODE_PWM) {
+			panel->backlight.level = panel->backlight.pwm_funcs->get(connector, pipe);
+			panel->backlight.enabled = panel->backlight.pwm_enabled;
+		} else {
+			panel->backlight.level = panel->backlight.max;
+			panel->backlight.enabled = false;
+		}
+	}
+
+	return 0;
+}
+
+static bool
+intel_dp_aux_supports_vesa_backlight(struct intel_connector *connector)
+{
+	struct intel_dp *intel_dp = intel_attached_dp(connector);
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+
+	if (drm_edp_backlight_supported(intel_dp->edp_dpcd)) {
+		drm_dbg_kms(&i915->drm, "AUX Backlight Control Supported!\n");
+		return true;
+	}
+	return false;
+}
+
+static const struct intel_panel_bl_funcs intel_dp_hdr_bl_funcs = {
+	.setup = intel_dp_aux_hdr_setup_backlight,
+	.enable = intel_dp_aux_hdr_enable_backlight,
+	.disable = intel_dp_aux_hdr_disable_backlight,
+	.set = intel_dp_aux_hdr_set_backlight,
+	.get = intel_dp_aux_hdr_get_backlight,
+};
+
+static const struct intel_panel_bl_funcs intel_dp_vesa_bl_funcs = {
+	.setup = intel_dp_aux_vesa_setup_backlight,
+	.enable = intel_dp_aux_vesa_enable_backlight,
+	.disable = intel_dp_aux_vesa_disable_backlight,
+	.set = intel_dp_aux_vesa_set_backlight,
+	.get = intel_dp_aux_vesa_get_backlight,
+};
+
+int intel_dp_aux_init_backlight_funcs(struct intel_connector *connector)
+{
+	struct drm_device *dev = connector->base.dev;
+	struct intel_panel *panel = &connector->panel;
+	struct intel_dp *intel_dp = enc_to_intel_dp(connector->encoder);
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	bool try_intel_interface = false, try_vesa_interface = false;
+
+	/* Check the VBT and user's module parameters to figure out which
+	 * interfaces to probe
+	 */
+	switch (i915->params.enable_dpcd_backlight) {
+	case INTEL_DP_AUX_BACKLIGHT_OFF:
+		return -ENODEV;
+	case INTEL_DP_AUX_BACKLIGHT_AUTO:
+		switch (panel->vbt.backlight.type) {
+		case INTEL_BACKLIGHT_VESA_EDP_AUX_INTERFACE:
+			try_vesa_interface = true;
+			break;
+		case INTEL_BACKLIGHT_DISPLAY_DDI:
+			try_intel_interface = true;
+			break;
+		default:
+			return -ENODEV;
+		}
+		break;
+	case INTEL_DP_AUX_BACKLIGHT_ON:
+		if (panel->vbt.backlight.type != INTEL_BACKLIGHT_VESA_EDP_AUX_INTERFACE)
+			try_intel_interface = true;
+
+		try_vesa_interface = true;
+		break;
+	case INTEL_DP_AUX_BACKLIGHT_FORCE_VESA:
+		try_vesa_interface = true;
+		break;
+	case INTEL_DP_AUX_BACKLIGHT_FORCE_INTEL:
+		try_intel_interface = true;
+		break;
+	}
+
+	/*
+	 * Since Intel has their own backlight control interface, the majority of machines out there
+	 * using DPCD backlight controls with Intel GPUs will be using this interface as opposed to
+	 * the VESA interface. However, other GPUs (such as Nvidia's) will always use the VESA
+	 * interface. This means that there's quite a number of panels out there that will advertise
+	 * support for both interfaces, primarily systems with Intel/Nvidia hybrid GPU setups.
+	 *
+	 * There's a catch to this though: on many panels that advertise support for both
+	 * interfaces, the VESA backlight interface will stop working once we've programmed the
+	 * panel with Intel's OUI - which is also required for us to be able to detect Intel's
+	 * backlight interface at all. This means that the only sensible way for us to detect both
+	 * interfaces is to probe for Intel's first, and VESA's second.
+	 */
+	if (try_intel_interface && intel_dp_aux_supports_hdr_backlight(connector)) {
+		drm_dbg_kms(dev, "Using Intel proprietary eDP backlight controls\n");
+		panel->backlight.funcs = &intel_dp_hdr_bl_funcs;
+		return 0;
+	}
+
+	if (try_vesa_interface && intel_dp_aux_supports_vesa_backlight(connector)) {
+		drm_dbg_kms(dev, "Using VESA eDP backlight controls\n");
+		panel->backlight.funcs = &intel_dp_vesa_bl_funcs;
+		return 0;
+	}
+
+	return -ENODEV;
+}
diff --git a/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.h b/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.h
new file mode 100644
index 000000000..ed60c2858
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_DP_AUX_BACKLIGHT_H__
+#define __INTEL_DP_AUX_BACKLIGHT_H__
+
+struct intel_connector;
+
+int intel_dp_aux_init_backlight_funcs(struct intel_connector *intel_connector);
+
+#endif /* __INTEL_DP_AUX_BACKLIGHT_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_dp_hdcp.c b/drivers/gpu/drm/i915/display/intel_dp_hdcp.c
new file mode 100644
index 000000000..88689124c
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dp_hdcp.c
@@ -0,0 +1,823 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright (C) 2020 Google, Inc.
+ *
+ * Authors:
+ * Sean Paul <seanpaul@chromium.org>
+ */
+
+#include <drm/display/drm_dp_helper.h>
+#include <drm/display/drm_dp_mst_helper.h>
+#include <drm/display/drm_hdcp_helper.h>
+#include <drm/drm_print.h>
+
+#include "intel_ddi.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_dp.h"
+#include "intel_dp_hdcp.h"
+#include "intel_hdcp.h"
+#include "intel_hdcp_regs.h"
+
+static unsigned int transcoder_to_stream_enc_status(enum transcoder cpu_transcoder)
+{
+	u32 stream_enc_mask;
+
+	switch (cpu_transcoder) {
+	case TRANSCODER_A:
+		stream_enc_mask = HDCP_STATUS_STREAM_A_ENC;
+		break;
+	case TRANSCODER_B:
+		stream_enc_mask = HDCP_STATUS_STREAM_B_ENC;
+		break;
+	case TRANSCODER_C:
+		stream_enc_mask = HDCP_STATUS_STREAM_C_ENC;
+		break;
+	case TRANSCODER_D:
+		stream_enc_mask = HDCP_STATUS_STREAM_D_ENC;
+		break;
+	default:
+		stream_enc_mask = 0;
+	}
+
+	return stream_enc_mask;
+}
+
+static void intel_dp_hdcp_wait_for_cp_irq(struct intel_hdcp *hdcp, int timeout)
+{
+	long ret;
+
+#define C (hdcp->cp_irq_count_cached != atomic_read(&hdcp->cp_irq_count))
+	ret = wait_event_interruptible_timeout(hdcp->cp_irq_queue, C,
+					       msecs_to_jiffies(timeout));
+
+	if (!ret)
+		DRM_DEBUG_KMS("Timedout at waiting for CP_IRQ\n");
+}
+
+static
+int intel_dp_hdcp_write_an_aksv(struct intel_digital_port *dig_port,
+				u8 *an)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	u8 aksv[DRM_HDCP_KSV_LEN] = {};
+	ssize_t dpcd_ret;
+
+	/* Output An first, that's easy */
+	dpcd_ret = drm_dp_dpcd_write(&dig_port->dp.aux, DP_AUX_HDCP_AN,
+				     an, DRM_HDCP_AN_LEN);
+	if (dpcd_ret != DRM_HDCP_AN_LEN) {
+		drm_dbg_kms(&i915->drm,
+			    "Failed to write An over DP/AUX (%zd)\n",
+			    dpcd_ret);
+		return dpcd_ret >= 0 ? -EIO : dpcd_ret;
+	}
+
+	/*
+	 * Since Aksv is Oh-So-Secret, we can't access it in software. So we
+	 * send an empty buffer of the correct length through the DP helpers. On
+	 * the other side, in the transfer hook, we'll generate a flag based on
+	 * the destination address which will tickle the hardware to output the
+	 * Aksv on our behalf after the header is sent.
+	 */
+	dpcd_ret = drm_dp_dpcd_write(&dig_port->dp.aux, DP_AUX_HDCP_AKSV,
+				     aksv, DRM_HDCP_KSV_LEN);
+	if (dpcd_ret != DRM_HDCP_KSV_LEN) {
+		drm_dbg_kms(&i915->drm,
+			    "Failed to write Aksv over DP/AUX (%zd)\n",
+			    dpcd_ret);
+		return dpcd_ret >= 0 ? -EIO : dpcd_ret;
+	}
+	return 0;
+}
+
+static int intel_dp_hdcp_read_bksv(struct intel_digital_port *dig_port,
+				   u8 *bksv)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	ssize_t ret;
+
+	ret = drm_dp_dpcd_read(&dig_port->dp.aux, DP_AUX_HDCP_BKSV, bksv,
+			       DRM_HDCP_KSV_LEN);
+	if (ret != DRM_HDCP_KSV_LEN) {
+		drm_dbg_kms(&i915->drm,
+			    "Read Bksv from DP/AUX failed (%zd)\n", ret);
+		return ret >= 0 ? -EIO : ret;
+	}
+	return 0;
+}
+
+static int intel_dp_hdcp_read_bstatus(struct intel_digital_port *dig_port,
+				      u8 *bstatus)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	ssize_t ret;
+
+	/*
+	 * For some reason the HDMI and DP HDCP specs call this register
+	 * definition by different names. In the HDMI spec, it's called BSTATUS,
+	 * but in DP it's called BINFO.
+	 */
+	ret = drm_dp_dpcd_read(&dig_port->dp.aux, DP_AUX_HDCP_BINFO,
+			       bstatus, DRM_HDCP_BSTATUS_LEN);
+	if (ret != DRM_HDCP_BSTATUS_LEN) {
+		drm_dbg_kms(&i915->drm,
+			    "Read bstatus from DP/AUX failed (%zd)\n", ret);
+		return ret >= 0 ? -EIO : ret;
+	}
+	return 0;
+}
+
+static
+int intel_dp_hdcp_read_bcaps(struct intel_digital_port *dig_port,
+			     u8 *bcaps)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	ssize_t ret;
+
+	ret = drm_dp_dpcd_read(&dig_port->dp.aux, DP_AUX_HDCP_BCAPS,
+			       bcaps, 1);
+	if (ret != 1) {
+		drm_dbg_kms(&i915->drm,
+			    "Read bcaps from DP/AUX failed (%zd)\n", ret);
+		return ret >= 0 ? -EIO : ret;
+	}
+
+	return 0;
+}
+
+static
+int intel_dp_hdcp_repeater_present(struct intel_digital_port *dig_port,
+				   bool *repeater_present)
+{
+	ssize_t ret;
+	u8 bcaps;
+
+	ret = intel_dp_hdcp_read_bcaps(dig_port, &bcaps);
+	if (ret)
+		return ret;
+
+	*repeater_present = bcaps & DP_BCAPS_REPEATER_PRESENT;
+	return 0;
+}
+
+static
+int intel_dp_hdcp_read_ri_prime(struct intel_digital_port *dig_port,
+				u8 *ri_prime)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	ssize_t ret;
+
+	ret = drm_dp_dpcd_read(&dig_port->dp.aux, DP_AUX_HDCP_RI_PRIME,
+			       ri_prime, DRM_HDCP_RI_LEN);
+	if (ret != DRM_HDCP_RI_LEN) {
+		drm_dbg_kms(&i915->drm, "Read Ri' from DP/AUX failed (%zd)\n",
+			    ret);
+		return ret >= 0 ? -EIO : ret;
+	}
+	return 0;
+}
+
+static
+int intel_dp_hdcp_read_ksv_ready(struct intel_digital_port *dig_port,
+				 bool *ksv_ready)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	ssize_t ret;
+	u8 bstatus;
+
+	ret = drm_dp_dpcd_read(&dig_port->dp.aux, DP_AUX_HDCP_BSTATUS,
+			       &bstatus, 1);
+	if (ret != 1) {
+		drm_dbg_kms(&i915->drm,
+			    "Read bstatus from DP/AUX failed (%zd)\n", ret);
+		return ret >= 0 ? -EIO : ret;
+	}
+	*ksv_ready = bstatus & DP_BSTATUS_READY;
+	return 0;
+}
+
+static
+int intel_dp_hdcp_read_ksv_fifo(struct intel_digital_port *dig_port,
+				int num_downstream, u8 *ksv_fifo)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	ssize_t ret;
+	int i;
+
+	/* KSV list is read via 15 byte window (3 entries @ 5 bytes each) */
+	for (i = 0; i < num_downstream; i += 3) {
+		size_t len = min(num_downstream - i, 3) * DRM_HDCP_KSV_LEN;
+		ret = drm_dp_dpcd_read(&dig_port->dp.aux,
+				       DP_AUX_HDCP_KSV_FIFO,
+				       ksv_fifo + i * DRM_HDCP_KSV_LEN,
+				       len);
+		if (ret != len) {
+			drm_dbg_kms(&i915->drm,
+				    "Read ksv[%d] from DP/AUX failed (%zd)\n",
+				    i, ret);
+			return ret >= 0 ? -EIO : ret;
+		}
+	}
+	return 0;
+}
+
+static
+int intel_dp_hdcp_read_v_prime_part(struct intel_digital_port *dig_port,
+				    int i, u32 *part)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	ssize_t ret;
+
+	if (i >= DRM_HDCP_V_PRIME_NUM_PARTS)
+		return -EINVAL;
+
+	ret = drm_dp_dpcd_read(&dig_port->dp.aux,
+			       DP_AUX_HDCP_V_PRIME(i), part,
+			       DRM_HDCP_V_PRIME_PART_LEN);
+	if (ret != DRM_HDCP_V_PRIME_PART_LEN) {
+		drm_dbg_kms(&i915->drm,
+			    "Read v'[%d] from DP/AUX failed (%zd)\n", i, ret);
+		return ret >= 0 ? -EIO : ret;
+	}
+	return 0;
+}
+
+static
+int intel_dp_hdcp_toggle_signalling(struct intel_digital_port *dig_port,
+				    enum transcoder cpu_transcoder,
+				    bool enable)
+{
+	/* Not used for single stream DisplayPort setups */
+	return 0;
+}
+
+static
+bool intel_dp_hdcp_check_link(struct intel_digital_port *dig_port,
+			      struct intel_connector *connector)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	ssize_t ret;
+	u8 bstatus;
+
+	ret = drm_dp_dpcd_read(&dig_port->dp.aux, DP_AUX_HDCP_BSTATUS,
+			       &bstatus, 1);
+	if (ret != 1) {
+		drm_dbg_kms(&i915->drm,
+			    "Read bstatus from DP/AUX failed (%zd)\n", ret);
+		return false;
+	}
+
+	return !(bstatus & (DP_BSTATUS_LINK_FAILURE | DP_BSTATUS_REAUTH_REQ));
+}
+
+static
+int intel_dp_hdcp_capable(struct intel_digital_port *dig_port,
+			  bool *hdcp_capable)
+{
+	ssize_t ret;
+	u8 bcaps;
+
+	ret = intel_dp_hdcp_read_bcaps(dig_port, &bcaps);
+	if (ret)
+		return ret;
+
+	*hdcp_capable = bcaps & DP_BCAPS_HDCP_CAPABLE;
+	return 0;
+}
+
+struct hdcp2_dp_errata_stream_type {
+	u8	msg_id;
+	u8	stream_type;
+} __packed;
+
+struct hdcp2_dp_msg_data {
+	u8 msg_id;
+	u32 offset;
+	bool msg_detectable;
+	u32 timeout;
+	u32 timeout2; /* Added for non_paired situation */
+	/* Timeout to read entire msg */
+	u32 msg_read_timeout;
+};
+
+static const struct hdcp2_dp_msg_data hdcp2_dp_msg_data[] = {
+	{ HDCP_2_2_AKE_INIT, DP_HDCP_2_2_AKE_INIT_OFFSET, false, 0, 0, 0},
+	{ HDCP_2_2_AKE_SEND_CERT, DP_HDCP_2_2_AKE_SEND_CERT_OFFSET,
+	  false, HDCP_2_2_CERT_TIMEOUT_MS, 0, HDCP_2_2_DP_CERT_READ_TIMEOUT_MS},
+	{ HDCP_2_2_AKE_NO_STORED_KM, DP_HDCP_2_2_AKE_NO_STORED_KM_OFFSET,
+	  false, 0, 0, 0 },
+	{ HDCP_2_2_AKE_STORED_KM, DP_HDCP_2_2_AKE_STORED_KM_OFFSET,
+	  false, 0, 0, 0 },
+	{ HDCP_2_2_AKE_SEND_HPRIME, DP_HDCP_2_2_AKE_SEND_HPRIME_OFFSET,
+	  true, HDCP_2_2_HPRIME_PAIRED_TIMEOUT_MS,
+	  HDCP_2_2_HPRIME_NO_PAIRED_TIMEOUT_MS, HDCP_2_2_DP_HPRIME_READ_TIMEOUT_MS},
+	{ HDCP_2_2_AKE_SEND_PAIRING_INFO,
+	  DP_HDCP_2_2_AKE_SEND_PAIRING_INFO_OFFSET, true,
+	  HDCP_2_2_PAIRING_TIMEOUT_MS, 0, HDCP_2_2_DP_PAIRING_READ_TIMEOUT_MS },
+	{ HDCP_2_2_LC_INIT, DP_HDCP_2_2_LC_INIT_OFFSET, false, 0, 0, 0 },
+	{ HDCP_2_2_LC_SEND_LPRIME, DP_HDCP_2_2_LC_SEND_LPRIME_OFFSET,
+	  false, HDCP_2_2_DP_LPRIME_TIMEOUT_MS, 0, 0 },
+	{ HDCP_2_2_SKE_SEND_EKS, DP_HDCP_2_2_SKE_SEND_EKS_OFFSET, false,
+	  0, 0, 0 },
+	{ HDCP_2_2_REP_SEND_RECVID_LIST,
+	  DP_HDCP_2_2_REP_SEND_RECVID_LIST_OFFSET, true,
+	  HDCP_2_2_RECVID_LIST_TIMEOUT_MS, 0, 0 },
+	{ HDCP_2_2_REP_SEND_ACK, DP_HDCP_2_2_REP_SEND_ACK_OFFSET, false,
+	  0, 0, 0 },
+	{ HDCP_2_2_REP_STREAM_MANAGE,
+	  DP_HDCP_2_2_REP_STREAM_MANAGE_OFFSET, false,
+	  0, 0, 0},
+	{ HDCP_2_2_REP_STREAM_READY, DP_HDCP_2_2_REP_STREAM_READY_OFFSET,
+	  false, HDCP_2_2_STREAM_READY_TIMEOUT_MS, 0, 0 },
+/* local define to shovel this through the write_2_2 interface */
+#define HDCP_2_2_ERRATA_DP_STREAM_TYPE	50
+	{ HDCP_2_2_ERRATA_DP_STREAM_TYPE,
+	  DP_HDCP_2_2_REG_STREAM_TYPE_OFFSET, false,
+	  0, 0 },
+};
+
+static int
+intel_dp_hdcp2_read_rx_status(struct intel_digital_port *dig_port,
+			      u8 *rx_status)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	ssize_t ret;
+
+	ret = drm_dp_dpcd_read(&dig_port->dp.aux,
+			       DP_HDCP_2_2_REG_RXSTATUS_OFFSET, rx_status,
+			       HDCP_2_2_DP_RXSTATUS_LEN);
+	if (ret != HDCP_2_2_DP_RXSTATUS_LEN) {
+		drm_dbg_kms(&i915->drm,
+			    "Read bstatus from DP/AUX failed (%zd)\n", ret);
+		return ret >= 0 ? -EIO : ret;
+	}
+
+	return 0;
+}
+
+static
+int hdcp2_detect_msg_availability(struct intel_digital_port *dig_port,
+				  u8 msg_id, bool *msg_ready)
+{
+	u8 rx_status;
+	int ret;
+
+	*msg_ready = false;
+	ret = intel_dp_hdcp2_read_rx_status(dig_port, &rx_status);
+	if (ret < 0)
+		return ret;
+
+	switch (msg_id) {
+	case HDCP_2_2_AKE_SEND_HPRIME:
+		if (HDCP_2_2_DP_RXSTATUS_H_PRIME(rx_status))
+			*msg_ready = true;
+		break;
+	case HDCP_2_2_AKE_SEND_PAIRING_INFO:
+		if (HDCP_2_2_DP_RXSTATUS_PAIRING(rx_status))
+			*msg_ready = true;
+		break;
+	case HDCP_2_2_REP_SEND_RECVID_LIST:
+		if (HDCP_2_2_DP_RXSTATUS_READY(rx_status))
+			*msg_ready = true;
+		break;
+	default:
+		DRM_ERROR("Unidentified msg_id: %d\n", msg_id);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static ssize_t
+intel_dp_hdcp2_wait_for_msg(struct intel_digital_port *dig_port,
+			    const struct hdcp2_dp_msg_data *hdcp2_msg_data)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	struct intel_dp *dp = &dig_port->dp;
+	struct intel_hdcp *hdcp = &dp->attached_connector->hdcp;
+	u8 msg_id = hdcp2_msg_data->msg_id;
+	int ret, timeout;
+	bool msg_ready = false;
+
+	if (msg_id == HDCP_2_2_AKE_SEND_HPRIME && !hdcp->is_paired)
+		timeout = hdcp2_msg_data->timeout2;
+	else
+		timeout = hdcp2_msg_data->timeout;
+
+	/*
+	 * There is no way to detect the CERT, LPRIME and STREAM_READY
+	 * availability. So Wait for timeout and read the msg.
+	 */
+	if (!hdcp2_msg_data->msg_detectable) {
+		mdelay(timeout);
+		ret = 0;
+	} else {
+		/*
+		 * As we want to check the msg availability at timeout, Ignoring
+		 * the timeout at wait for CP_IRQ.
+		 */
+		intel_dp_hdcp_wait_for_cp_irq(hdcp, timeout);
+		ret = hdcp2_detect_msg_availability(dig_port,
+						    msg_id, &msg_ready);
+		if (!msg_ready)
+			ret = -ETIMEDOUT;
+	}
+
+	if (ret)
+		drm_dbg_kms(&i915->drm,
+			    "msg_id %d, ret %d, timeout(mSec): %d\n",
+			    hdcp2_msg_data->msg_id, ret, timeout);
+
+	return ret;
+}
+
+static const struct hdcp2_dp_msg_data *get_hdcp2_dp_msg_data(u8 msg_id)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(hdcp2_dp_msg_data); i++)
+		if (hdcp2_dp_msg_data[i].msg_id == msg_id)
+			return &hdcp2_dp_msg_data[i];
+
+	return NULL;
+}
+
+static
+int intel_dp_hdcp2_write_msg(struct intel_digital_port *dig_port,
+			     void *buf, size_t size)
+{
+	unsigned int offset;
+	u8 *byte = buf;
+	ssize_t ret, bytes_to_write, len;
+	const struct hdcp2_dp_msg_data *hdcp2_msg_data;
+
+	hdcp2_msg_data = get_hdcp2_dp_msg_data(*byte);
+	if (!hdcp2_msg_data)
+		return -EINVAL;
+
+	offset = hdcp2_msg_data->offset;
+
+	/* No msg_id in DP HDCP2.2 msgs */
+	bytes_to_write = size - 1;
+	byte++;
+
+	while (bytes_to_write) {
+		len = bytes_to_write > DP_AUX_MAX_PAYLOAD_BYTES ?
+				DP_AUX_MAX_PAYLOAD_BYTES : bytes_to_write;
+
+		ret = drm_dp_dpcd_write(&dig_port->dp.aux,
+					offset, (void *)byte, len);
+		if (ret < 0)
+			return ret;
+
+		bytes_to_write -= ret;
+		byte += ret;
+		offset += ret;
+	}
+
+	return size;
+}
+
+static
+ssize_t get_receiver_id_list_rx_info(struct intel_digital_port *dig_port, u32 *dev_cnt, u8 *byte)
+{
+	ssize_t ret;
+	u8 *rx_info = byte;
+
+	ret = drm_dp_dpcd_read(&dig_port->dp.aux,
+			       DP_HDCP_2_2_REG_RXINFO_OFFSET,
+			       (void *)rx_info, HDCP_2_2_RXINFO_LEN);
+	if (ret != HDCP_2_2_RXINFO_LEN)
+		return ret >= 0 ? -EIO : ret;
+
+	*dev_cnt = (HDCP_2_2_DEV_COUNT_HI(rx_info[0]) << 4 |
+		   HDCP_2_2_DEV_COUNT_LO(rx_info[1]));
+
+	if (*dev_cnt > HDCP_2_2_MAX_DEVICE_COUNT)
+		*dev_cnt = HDCP_2_2_MAX_DEVICE_COUNT;
+
+	return ret;
+}
+
+static
+int intel_dp_hdcp2_read_msg(struct intel_digital_port *dig_port,
+			    u8 msg_id, void *buf, size_t size)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	struct intel_dp *dp = &dig_port->dp;
+	struct intel_hdcp *hdcp = &dp->attached_connector->hdcp;
+	unsigned int offset;
+	u8 *byte = buf;
+	ssize_t ret, bytes_to_recv, len;
+	const struct hdcp2_dp_msg_data *hdcp2_msg_data;
+	ktime_t msg_end = ktime_set(0, 0);
+	bool msg_expired;
+	u32 dev_cnt;
+
+	hdcp2_msg_data = get_hdcp2_dp_msg_data(msg_id);
+	if (!hdcp2_msg_data)
+		return -EINVAL;
+	offset = hdcp2_msg_data->offset;
+
+	ret = intel_dp_hdcp2_wait_for_msg(dig_port, hdcp2_msg_data);
+	if (ret < 0)
+		return ret;
+
+	hdcp->cp_irq_count_cached = atomic_read(&hdcp->cp_irq_count);
+
+	/* DP adaptation msgs has no msg_id */
+	byte++;
+
+	if (msg_id == HDCP_2_2_REP_SEND_RECVID_LIST) {
+		ret = get_receiver_id_list_rx_info(dig_port, &dev_cnt, byte);
+		if (ret < 0)
+			return ret;
+
+		byte += ret;
+		size = sizeof(struct hdcp2_rep_send_receiverid_list) -
+		HDCP_2_2_RXINFO_LEN - HDCP_2_2_RECEIVER_IDS_MAX_LEN +
+		(dev_cnt * HDCP_2_2_RECEIVER_ID_LEN);
+		offset += HDCP_2_2_RXINFO_LEN;
+	}
+
+	bytes_to_recv = size - 1;
+
+	while (bytes_to_recv) {
+		len = bytes_to_recv > DP_AUX_MAX_PAYLOAD_BYTES ?
+		      DP_AUX_MAX_PAYLOAD_BYTES : bytes_to_recv;
+
+		/* Entire msg read timeout since initiate of msg read */
+		if (bytes_to_recv == size - 1 && hdcp2_msg_data->msg_read_timeout > 0)
+			msg_end = ktime_add_ms(ktime_get_raw(),
+					       hdcp2_msg_data->msg_read_timeout);
+
+		ret = drm_dp_dpcd_read(&dig_port->dp.aux, offset,
+				       (void *)byte, len);
+		if (ret < 0) {
+			drm_dbg_kms(&i915->drm, "msg_id %d, ret %zd\n",
+				    msg_id, ret);
+			return ret;
+		}
+
+		bytes_to_recv -= ret;
+		byte += ret;
+		offset += ret;
+	}
+
+	if (hdcp2_msg_data->msg_read_timeout > 0) {
+		msg_expired = ktime_after(ktime_get_raw(), msg_end);
+		if (msg_expired) {
+			drm_dbg_kms(&i915->drm, "msg_id %d, entire msg read timeout(mSec): %d\n",
+				    msg_id, hdcp2_msg_data->msg_read_timeout);
+			return -ETIMEDOUT;
+		}
+	}
+
+	byte = buf;
+	*byte = msg_id;
+
+	return size;
+}
+
+static
+int intel_dp_hdcp2_config_stream_type(struct intel_digital_port *dig_port,
+				      bool is_repeater, u8 content_type)
+{
+	int ret;
+	struct hdcp2_dp_errata_stream_type stream_type_msg;
+
+	if (is_repeater)
+		return 0;
+
+	/*
+	 * Errata for DP: As Stream type is used for encryption, Receiver
+	 * should be communicated with stream type for the decryption of the
+	 * content.
+	 * Repeater will be communicated with stream type as a part of it's
+	 * auth later in time.
+	 */
+	stream_type_msg.msg_id = HDCP_2_2_ERRATA_DP_STREAM_TYPE;
+	stream_type_msg.stream_type = content_type;
+
+	ret =  intel_dp_hdcp2_write_msg(dig_port, &stream_type_msg,
+					sizeof(stream_type_msg));
+
+	return ret < 0 ? ret : 0;
+
+}
+
+static
+int intel_dp_hdcp2_check_link(struct intel_digital_port *dig_port,
+			      struct intel_connector *connector)
+{
+	u8 rx_status;
+	int ret;
+
+	ret = intel_dp_hdcp2_read_rx_status(dig_port, &rx_status);
+	if (ret)
+		return ret;
+
+	if (HDCP_2_2_DP_RXSTATUS_REAUTH_REQ(rx_status))
+		ret = HDCP_REAUTH_REQUEST;
+	else if (HDCP_2_2_DP_RXSTATUS_LINK_FAILED(rx_status))
+		ret = HDCP_LINK_INTEGRITY_FAILURE;
+	else if (HDCP_2_2_DP_RXSTATUS_READY(rx_status))
+		ret = HDCP_TOPOLOGY_CHANGE;
+
+	return ret;
+}
+
+static
+int intel_dp_hdcp2_capable(struct intel_digital_port *dig_port,
+			   bool *capable)
+{
+	u8 rx_caps[3];
+	int ret;
+
+	*capable = false;
+	ret = drm_dp_dpcd_read(&dig_port->dp.aux,
+			       DP_HDCP_2_2_REG_RX_CAPS_OFFSET,
+			       rx_caps, HDCP_2_2_RXCAPS_LEN);
+	if (ret != HDCP_2_2_RXCAPS_LEN)
+		return ret >= 0 ? -EIO : ret;
+
+	if (rx_caps[0] == HDCP_2_2_RX_CAPS_VERSION_VAL &&
+	    HDCP_2_2_DP_HDCP_CAPABLE(rx_caps[2]))
+		*capable = true;
+
+	return 0;
+}
+
+static const struct intel_hdcp_shim intel_dp_hdcp_shim = {
+	.write_an_aksv = intel_dp_hdcp_write_an_aksv,
+	.read_bksv = intel_dp_hdcp_read_bksv,
+	.read_bstatus = intel_dp_hdcp_read_bstatus,
+	.repeater_present = intel_dp_hdcp_repeater_present,
+	.read_ri_prime = intel_dp_hdcp_read_ri_prime,
+	.read_ksv_ready = intel_dp_hdcp_read_ksv_ready,
+	.read_ksv_fifo = intel_dp_hdcp_read_ksv_fifo,
+	.read_v_prime_part = intel_dp_hdcp_read_v_prime_part,
+	.toggle_signalling = intel_dp_hdcp_toggle_signalling,
+	.check_link = intel_dp_hdcp_check_link,
+	.hdcp_capable = intel_dp_hdcp_capable,
+	.write_2_2_msg = intel_dp_hdcp2_write_msg,
+	.read_2_2_msg = intel_dp_hdcp2_read_msg,
+	.config_stream_type = intel_dp_hdcp2_config_stream_type,
+	.check_2_2_link = intel_dp_hdcp2_check_link,
+	.hdcp_2_2_capable = intel_dp_hdcp2_capable,
+	.protocol = HDCP_PROTOCOL_DP,
+};
+
+static int
+intel_dp_mst_toggle_hdcp_stream_select(struct intel_connector *connector,
+				       bool enable)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+	struct intel_hdcp *hdcp = &connector->hdcp;
+	int ret;
+
+	ret = intel_ddi_toggle_hdcp_bits(&dig_port->base,
+					 hdcp->stream_transcoder, enable,
+					 TRANS_DDI_HDCP_SELECT);
+	if (ret)
+		drm_err(&i915->drm, "%s HDCP stream select failed (%d)\n",
+			enable ? "Enable" : "Disable", ret);
+	return ret;
+}
+
+static int
+intel_dp_mst_hdcp_stream_encryption(struct intel_connector *connector,
+				    bool enable)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+	struct intel_hdcp *hdcp = &connector->hdcp;
+	enum port port = dig_port->base.port;
+	enum transcoder cpu_transcoder = hdcp->stream_transcoder;
+	u32 stream_enc_status;
+	int ret;
+
+	ret = intel_dp_mst_toggle_hdcp_stream_select(connector, enable);
+	if (ret)
+		return ret;
+
+	stream_enc_status =  transcoder_to_stream_enc_status(cpu_transcoder);
+	if (!stream_enc_status)
+		return -EINVAL;
+
+	/* Wait for encryption confirmation */
+	if (intel_de_wait_for_register(i915,
+				       HDCP_STATUS(i915, cpu_transcoder, port),
+				       stream_enc_status,
+				       enable ? stream_enc_status : 0,
+				       HDCP_ENCRYPT_STATUS_CHANGE_TIMEOUT_MS)) {
+		drm_err(&i915->drm, "Timed out waiting for transcoder: %s stream encryption %s\n",
+			transcoder_name(cpu_transcoder), enable ? "enabled" : "disabled");
+		return -ETIMEDOUT;
+	}
+
+	return 0;
+}
+
+static int
+intel_dp_mst_hdcp2_stream_encryption(struct intel_connector *connector,
+				     bool enable)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+	struct hdcp_port_data *data = &dig_port->hdcp_port_data;
+	struct intel_hdcp *hdcp = &connector->hdcp;
+	enum transcoder cpu_transcoder = hdcp->stream_transcoder;
+	enum pipe pipe = (enum pipe)cpu_transcoder;
+	enum port port = dig_port->base.port;
+	int ret;
+
+	drm_WARN_ON(&i915->drm, enable &&
+		    !!(intel_de_read(i915, HDCP2_AUTH_STREAM(i915, cpu_transcoder, port))
+		    & AUTH_STREAM_TYPE) != data->streams[0].stream_type);
+
+	ret = intel_dp_mst_toggle_hdcp_stream_select(connector, enable);
+	if (ret)
+		return ret;
+
+	/* Wait for encryption confirmation */
+	if (intel_de_wait_for_register(i915,
+				       HDCP2_STREAM_STATUS(i915, cpu_transcoder, pipe),
+				       STREAM_ENCRYPTION_STATUS,
+				       enable ? STREAM_ENCRYPTION_STATUS : 0,
+				       HDCP_ENCRYPT_STATUS_CHANGE_TIMEOUT_MS)) {
+		drm_err(&i915->drm, "Timed out waiting for transcoder: %s stream encryption %s\n",
+			transcoder_name(cpu_transcoder), enable ? "enabled" : "disabled");
+		return -ETIMEDOUT;
+	}
+
+	return 0;
+}
+
+static
+int intel_dp_mst_hdcp2_check_link(struct intel_digital_port *dig_port,
+				  struct intel_connector *connector)
+{
+	struct intel_hdcp *hdcp = &connector->hdcp;
+	int ret;
+
+	/*
+	 * We do need to do the Link Check only for the connector involved with
+	 * HDCP port authentication and encryption.
+	 * We can re-use the hdcp->is_repeater flag to know that the connector
+	 * involved with HDCP port authentication and encryption.
+	 */
+	if (hdcp->is_repeater) {
+		ret = intel_dp_hdcp2_check_link(dig_port, connector);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static const struct intel_hdcp_shim intel_dp_mst_hdcp_shim = {
+	.write_an_aksv = intel_dp_hdcp_write_an_aksv,
+	.read_bksv = intel_dp_hdcp_read_bksv,
+	.read_bstatus = intel_dp_hdcp_read_bstatus,
+	.repeater_present = intel_dp_hdcp_repeater_present,
+	.read_ri_prime = intel_dp_hdcp_read_ri_prime,
+	.read_ksv_ready = intel_dp_hdcp_read_ksv_ready,
+	.read_ksv_fifo = intel_dp_hdcp_read_ksv_fifo,
+	.read_v_prime_part = intel_dp_hdcp_read_v_prime_part,
+	.toggle_signalling = intel_dp_hdcp_toggle_signalling,
+	.stream_encryption = intel_dp_mst_hdcp_stream_encryption,
+	.check_link = intel_dp_hdcp_check_link,
+	.hdcp_capable = intel_dp_hdcp_capable,
+	.write_2_2_msg = intel_dp_hdcp2_write_msg,
+	.read_2_2_msg = intel_dp_hdcp2_read_msg,
+	.config_stream_type = intel_dp_hdcp2_config_stream_type,
+	.stream_2_2_encryption = intel_dp_mst_hdcp2_stream_encryption,
+	.check_2_2_link = intel_dp_mst_hdcp2_check_link,
+	.hdcp_2_2_capable = intel_dp_hdcp2_capable,
+	.protocol = HDCP_PROTOCOL_DP,
+};
+
+int intel_dp_hdcp_init(struct intel_digital_port *dig_port,
+		       struct intel_connector *intel_connector)
+{
+	struct drm_device *dev = intel_connector->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_encoder *intel_encoder = &dig_port->base;
+	enum port port = intel_encoder->port;
+	struct intel_dp *intel_dp = &dig_port->dp;
+
+	if (!is_hdcp_supported(dev_priv, port))
+		return 0;
+
+	if (intel_connector->mst_port)
+		return intel_hdcp_init(intel_connector, dig_port,
+				       &intel_dp_mst_hdcp_shim);
+	else if (!intel_dp_is_edp(intel_dp))
+		return intel_hdcp_init(intel_connector, dig_port,
+				       &intel_dp_hdcp_shim);
+
+	return 0;
+}
diff --git a/drivers/gpu/drm/i915/display/intel_dp_hdcp.h b/drivers/gpu/drm/i915/display/intel_dp_hdcp.h
new file mode 100644
index 000000000..eff5ec5c5
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dp_hdcp.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#ifndef __INTEL_DP_HDCP___
+#define __INTEL_DP_HDCP___
+
+struct intel_connector;
+struct intel_digital_port;
+
+int intel_dp_hdcp_init(struct intel_digital_port *dig_port,
+		       struct intel_connector *intel_connector);
+
+#endif /* __INTEL_DP_HDCP___ */
diff --git a/drivers/gpu/drm/i915/display/intel_dp_link_training.c b/drivers/gpu/drm/i915/display/intel_dp_link_training.c
new file mode 100644
index 000000000..3d3efcf02
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dp_link_training.c
@@ -0,0 +1,1456 @@
+/*
+ * Copyright © 2008-2015 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "i915_drv.h"
+#include "intel_display_types.h"
+#include "intel_dp.h"
+#include "intel_dp_link_training.h"
+
+static void intel_dp_reset_lttpr_common_caps(struct intel_dp *intel_dp)
+{
+	memset(intel_dp->lttpr_common_caps, 0, sizeof(intel_dp->lttpr_common_caps));
+}
+
+static void intel_dp_reset_lttpr_count(struct intel_dp *intel_dp)
+{
+	intel_dp->lttpr_common_caps[DP_PHY_REPEATER_CNT -
+				    DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV] = 0;
+}
+
+static u8 *intel_dp_lttpr_phy_caps(struct intel_dp *intel_dp,
+				   enum drm_dp_phy dp_phy)
+{
+	return intel_dp->lttpr_phy_caps[dp_phy - DP_PHY_LTTPR1];
+}
+
+static void intel_dp_read_lttpr_phy_caps(struct intel_dp *intel_dp,
+					 const u8 dpcd[DP_RECEIVER_CAP_SIZE],
+					 enum drm_dp_phy dp_phy)
+{
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+	u8 *phy_caps = intel_dp_lttpr_phy_caps(intel_dp, dp_phy);
+
+	if (drm_dp_read_lttpr_phy_caps(&intel_dp->aux, dpcd, dp_phy, phy_caps) < 0) {
+		drm_dbg_kms(&dp_to_i915(intel_dp)->drm,
+			    "[ENCODER:%d:%s][%s] failed to read the PHY caps\n",
+			    encoder->base.base.id, encoder->base.name,
+			    drm_dp_phy_name(dp_phy));
+		return;
+	}
+
+	drm_dbg_kms(&dp_to_i915(intel_dp)->drm,
+		    "[ENCODER:%d:%s][%s] PHY capabilities: %*ph\n",
+		    encoder->base.base.id, encoder->base.name,
+		    drm_dp_phy_name(dp_phy),
+		    (int)sizeof(intel_dp->lttpr_phy_caps[0]),
+		    phy_caps);
+}
+
+static bool intel_dp_read_lttpr_common_caps(struct intel_dp *intel_dp,
+					    const u8 dpcd[DP_RECEIVER_CAP_SIZE])
+{
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+	int ret;
+
+	ret = drm_dp_read_lttpr_common_caps(&intel_dp->aux, dpcd,
+					    intel_dp->lttpr_common_caps);
+	if (ret < 0)
+		goto reset_caps;
+
+	drm_dbg_kms(&dp_to_i915(intel_dp)->drm,
+		    "[ENCODER:%d:%s] LTTPR common capabilities: %*ph\n",
+		    encoder->base.base.id, encoder->base.name,
+		    (int)sizeof(intel_dp->lttpr_common_caps),
+		    intel_dp->lttpr_common_caps);
+
+	/* The minimum value of LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV is 1.4 */
+	if (intel_dp->lttpr_common_caps[0] < 0x14)
+		goto reset_caps;
+
+	return true;
+
+reset_caps:
+	intel_dp_reset_lttpr_common_caps(intel_dp);
+	return false;
+}
+
+static bool
+intel_dp_set_lttpr_transparent_mode(struct intel_dp *intel_dp, bool enable)
+{
+	u8 val = enable ? DP_PHY_REPEATER_MODE_TRANSPARENT :
+			  DP_PHY_REPEATER_MODE_NON_TRANSPARENT;
+
+	return drm_dp_dpcd_write(&intel_dp->aux, DP_PHY_REPEATER_MODE, &val, 1) == 1;
+}
+
+static int intel_dp_init_lttpr(struct intel_dp *intel_dp, const u8 dpcd[DP_RECEIVER_CAP_SIZE])
+{
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	int lttpr_count;
+	int i;
+
+	if (!intel_dp_read_lttpr_common_caps(intel_dp, dpcd))
+		return 0;
+
+	lttpr_count = drm_dp_lttpr_count(intel_dp->lttpr_common_caps);
+	/*
+	 * Prevent setting LTTPR transparent mode explicitly if no LTTPRs are
+	 * detected as this breaks link training at least on the Dell WD19TB
+	 * dock.
+	 */
+	if (lttpr_count == 0)
+		return 0;
+
+	/*
+	 * See DP Standard v2.0 3.6.6.1. about the explicit disabling of
+	 * non-transparent mode and the disable->enable non-transparent mode
+	 * sequence.
+	 */
+	intel_dp_set_lttpr_transparent_mode(intel_dp, true);
+
+	/*
+	 * In case of unsupported number of LTTPRs or failing to switch to
+	 * non-transparent mode fall-back to transparent link training mode,
+	 * still taking into account any LTTPR common lane- rate/count limits.
+	 */
+	if (lttpr_count < 0)
+		return 0;
+
+	if (!intel_dp_set_lttpr_transparent_mode(intel_dp, false)) {
+		drm_dbg_kms(&i915->drm,
+			    "[ENCODER:%d:%s] Switching to LTTPR non-transparent LT mode failed, fall-back to transparent mode\n",
+			    encoder->base.base.id, encoder->base.name);
+
+		intel_dp_set_lttpr_transparent_mode(intel_dp, true);
+		intel_dp_reset_lttpr_count(intel_dp);
+
+		return 0;
+	}
+
+	for (i = 0; i < lttpr_count; i++)
+		intel_dp_read_lttpr_phy_caps(intel_dp, dpcd, DP_PHY_LTTPR(i));
+
+	return lttpr_count;
+}
+
+/**
+ * intel_dp_init_lttpr_and_dprx_caps - detect LTTPR and DPRX caps, init the LTTPR link training mode
+ * @intel_dp: Intel DP struct
+ *
+ * Read the LTTPR common and DPRX capabilities and switch to non-transparent
+ * link training mode if any is detected and read the PHY capabilities for all
+ * detected LTTPRs. In case of an LTTPR detection error or if the number of
+ * LTTPRs is more than is supported (8), fall back to the no-LTTPR,
+ * transparent mode link training mode.
+ *
+ * Returns:
+ *   >0  if LTTPRs were detected and the non-transparent LT mode was set. The
+ *       DPRX capabilities are read out.
+ *    0  if no LTTPRs or more than 8 LTTPRs were detected or in case of a
+ *       detection failure and the transparent LT mode was set. The DPRX
+ *       capabilities are read out.
+ *   <0  Reading out the DPRX capabilities failed.
+ */
+int intel_dp_init_lttpr_and_dprx_caps(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	int lttpr_count = 0;
+
+	/*
+	 * Detecting LTTPRs must be avoided on platforms with an AUX timeout
+	 * period < 3.2ms. (see DP Standard v2.0, 2.11.2, 3.6.6.1).
+	 */
+	if (!intel_dp_is_edp(intel_dp) &&
+	    (DISPLAY_VER(i915) >= 10 && !IS_GEMINILAKE(i915))) {
+		u8 dpcd[DP_RECEIVER_CAP_SIZE];
+
+		if (drm_dp_dpcd_probe(&intel_dp->aux, DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV))
+			return -EIO;
+
+		if (drm_dp_read_dpcd_caps(&intel_dp->aux, dpcd))
+			return -EIO;
+
+		lttpr_count = intel_dp_init_lttpr(intel_dp, dpcd);
+	}
+
+	/*
+	 * The DPTX shall read the DPRX caps after LTTPR detection, so re-read
+	 * it here.
+	 */
+	if (drm_dp_read_dpcd_caps(&intel_dp->aux, intel_dp->dpcd)) {
+		intel_dp_reset_lttpr_common_caps(intel_dp);
+		return -EIO;
+	}
+
+	return lttpr_count;
+}
+
+static u8 dp_voltage_max(u8 preemph)
+{
+	switch (preemph & DP_TRAIN_PRE_EMPHASIS_MASK) {
+	case DP_TRAIN_PRE_EMPH_LEVEL_0:
+		return DP_TRAIN_VOLTAGE_SWING_LEVEL_3;
+	case DP_TRAIN_PRE_EMPH_LEVEL_1:
+		return DP_TRAIN_VOLTAGE_SWING_LEVEL_2;
+	case DP_TRAIN_PRE_EMPH_LEVEL_2:
+		return DP_TRAIN_VOLTAGE_SWING_LEVEL_1;
+	case DP_TRAIN_PRE_EMPH_LEVEL_3:
+	default:
+		return DP_TRAIN_VOLTAGE_SWING_LEVEL_0;
+	}
+}
+
+static u8 intel_dp_lttpr_voltage_max(struct intel_dp *intel_dp,
+				     enum drm_dp_phy dp_phy)
+{
+	const u8 *phy_caps = intel_dp_lttpr_phy_caps(intel_dp, dp_phy);
+
+	if (drm_dp_lttpr_voltage_swing_level_3_supported(phy_caps))
+		return DP_TRAIN_VOLTAGE_SWING_LEVEL_3;
+	else
+		return DP_TRAIN_VOLTAGE_SWING_LEVEL_2;
+}
+
+static u8 intel_dp_lttpr_preemph_max(struct intel_dp *intel_dp,
+				     enum drm_dp_phy dp_phy)
+{
+	const u8 *phy_caps = intel_dp_lttpr_phy_caps(intel_dp, dp_phy);
+
+	if (drm_dp_lttpr_pre_emphasis_level_3_supported(phy_caps))
+		return DP_TRAIN_PRE_EMPH_LEVEL_3;
+	else
+		return DP_TRAIN_PRE_EMPH_LEVEL_2;
+}
+
+static bool
+intel_dp_phy_is_downstream_of_source(struct intel_dp *intel_dp,
+				     enum drm_dp_phy dp_phy)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	int lttpr_count = drm_dp_lttpr_count(intel_dp->lttpr_common_caps);
+
+	drm_WARN_ON_ONCE(&i915->drm, lttpr_count <= 0 && dp_phy != DP_PHY_DPRX);
+
+	return lttpr_count <= 0 || dp_phy == DP_PHY_LTTPR(lttpr_count - 1);
+}
+
+static u8 intel_dp_phy_voltage_max(struct intel_dp *intel_dp,
+				   const struct intel_crtc_state *crtc_state,
+				   enum drm_dp_phy dp_phy)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	u8 voltage_max;
+
+	/*
+	 * Get voltage_max from the DPTX_PHY (source or LTTPR) upstream from
+	 * the DPRX_PHY we train.
+	 */
+	if (intel_dp_phy_is_downstream_of_source(intel_dp, dp_phy))
+		voltage_max = intel_dp->voltage_max(intel_dp, crtc_state);
+	else
+		voltage_max = intel_dp_lttpr_voltage_max(intel_dp, dp_phy + 1);
+
+	drm_WARN_ON_ONCE(&i915->drm,
+			 voltage_max != DP_TRAIN_VOLTAGE_SWING_LEVEL_2 &&
+			 voltage_max != DP_TRAIN_VOLTAGE_SWING_LEVEL_3);
+
+	return voltage_max;
+}
+
+static u8 intel_dp_phy_preemph_max(struct intel_dp *intel_dp,
+				   enum drm_dp_phy dp_phy)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	u8 preemph_max;
+
+	/*
+	 * Get preemph_max from the DPTX_PHY (source or LTTPR) upstream from
+	 * the DPRX_PHY we train.
+	 */
+	if (intel_dp_phy_is_downstream_of_source(intel_dp, dp_phy))
+		preemph_max = intel_dp->preemph_max(intel_dp);
+	else
+		preemph_max = intel_dp_lttpr_preemph_max(intel_dp, dp_phy + 1);
+
+	drm_WARN_ON_ONCE(&i915->drm,
+			 preemph_max != DP_TRAIN_PRE_EMPH_LEVEL_2 &&
+			 preemph_max != DP_TRAIN_PRE_EMPH_LEVEL_3);
+
+	return preemph_max;
+}
+
+static bool has_per_lane_signal_levels(struct intel_dp *intel_dp,
+				       enum drm_dp_phy dp_phy)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+
+	return !intel_dp_phy_is_downstream_of_source(intel_dp, dp_phy) ||
+		DISPLAY_VER(i915) >= 11;
+}
+
+/* 128b/132b */
+static u8 intel_dp_get_lane_adjust_tx_ffe_preset(struct intel_dp *intel_dp,
+						 const struct intel_crtc_state *crtc_state,
+						 enum drm_dp_phy dp_phy,
+						 const u8 link_status[DP_LINK_STATUS_SIZE],
+						 int lane)
+{
+	u8 tx_ffe = 0;
+
+	if (has_per_lane_signal_levels(intel_dp, dp_phy)) {
+		lane = min(lane, crtc_state->lane_count - 1);
+		tx_ffe = drm_dp_get_adjust_tx_ffe_preset(link_status, lane);
+	} else {
+		for (lane = 0; lane < crtc_state->lane_count; lane++)
+			tx_ffe = max(tx_ffe, drm_dp_get_adjust_tx_ffe_preset(link_status, lane));
+	}
+
+	return tx_ffe;
+}
+
+/* 8b/10b */
+static u8 intel_dp_get_lane_adjust_vswing_preemph(struct intel_dp *intel_dp,
+						  const struct intel_crtc_state *crtc_state,
+						  enum drm_dp_phy dp_phy,
+						  const u8 link_status[DP_LINK_STATUS_SIZE],
+						  int lane)
+{
+	u8 v = 0;
+	u8 p = 0;
+	u8 voltage_max;
+	u8 preemph_max;
+
+	if (has_per_lane_signal_levels(intel_dp, dp_phy)) {
+		lane = min(lane, crtc_state->lane_count - 1);
+
+		v = drm_dp_get_adjust_request_voltage(link_status, lane);
+		p = drm_dp_get_adjust_request_pre_emphasis(link_status, lane);
+	} else {
+		for (lane = 0; lane < crtc_state->lane_count; lane++) {
+			v = max(v, drm_dp_get_adjust_request_voltage(link_status, lane));
+			p = max(p, drm_dp_get_adjust_request_pre_emphasis(link_status, lane));
+		}
+	}
+
+	preemph_max = intel_dp_phy_preemph_max(intel_dp, dp_phy);
+	if (p >= preemph_max)
+		p = preemph_max | DP_TRAIN_MAX_PRE_EMPHASIS_REACHED;
+
+	v = min(v, dp_voltage_max(p));
+
+	voltage_max = intel_dp_phy_voltage_max(intel_dp, crtc_state, dp_phy);
+	if (v >= voltage_max)
+		v = voltage_max | DP_TRAIN_MAX_SWING_REACHED;
+
+	return v | p;
+}
+
+static u8 intel_dp_get_lane_adjust_train(struct intel_dp *intel_dp,
+					 const struct intel_crtc_state *crtc_state,
+					 enum drm_dp_phy dp_phy,
+					 const u8 link_status[DP_LINK_STATUS_SIZE],
+					 int lane)
+{
+	if (intel_dp_is_uhbr(crtc_state))
+		return intel_dp_get_lane_adjust_tx_ffe_preset(intel_dp, crtc_state,
+							      dp_phy, link_status, lane);
+	else
+		return intel_dp_get_lane_adjust_vswing_preemph(intel_dp, crtc_state,
+							       dp_phy, link_status, lane);
+}
+
+#define TRAIN_REQ_FMT "%d/%d/%d/%d"
+#define _TRAIN_REQ_VSWING_ARGS(link_status, lane) \
+	(drm_dp_get_adjust_request_voltage((link_status), (lane)) >> DP_TRAIN_VOLTAGE_SWING_SHIFT)
+#define TRAIN_REQ_VSWING_ARGS(link_status) \
+	_TRAIN_REQ_VSWING_ARGS(link_status, 0), \
+	_TRAIN_REQ_VSWING_ARGS(link_status, 1), \
+	_TRAIN_REQ_VSWING_ARGS(link_status, 2), \
+	_TRAIN_REQ_VSWING_ARGS(link_status, 3)
+#define _TRAIN_REQ_PREEMPH_ARGS(link_status, lane) \
+	(drm_dp_get_adjust_request_pre_emphasis((link_status), (lane)) >> DP_TRAIN_PRE_EMPHASIS_SHIFT)
+#define TRAIN_REQ_PREEMPH_ARGS(link_status) \
+	_TRAIN_REQ_PREEMPH_ARGS(link_status, 0), \
+	_TRAIN_REQ_PREEMPH_ARGS(link_status, 1), \
+	_TRAIN_REQ_PREEMPH_ARGS(link_status, 2), \
+	_TRAIN_REQ_PREEMPH_ARGS(link_status, 3)
+#define _TRAIN_REQ_TX_FFE_ARGS(link_status, lane) \
+	drm_dp_get_adjust_tx_ffe_preset((link_status), (lane))
+#define TRAIN_REQ_TX_FFE_ARGS(link_status) \
+	_TRAIN_REQ_TX_FFE_ARGS(link_status, 0), \
+	_TRAIN_REQ_TX_FFE_ARGS(link_status, 1), \
+	_TRAIN_REQ_TX_FFE_ARGS(link_status, 2), \
+	_TRAIN_REQ_TX_FFE_ARGS(link_status, 3)
+
+void
+intel_dp_get_adjust_train(struct intel_dp *intel_dp,
+			  const struct intel_crtc_state *crtc_state,
+			  enum drm_dp_phy dp_phy,
+			  const u8 link_status[DP_LINK_STATUS_SIZE])
+{
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	int lane;
+
+	if (intel_dp_is_uhbr(crtc_state)) {
+		drm_dbg_kms(&i915->drm, "[ENCODER:%d:%s][%s] 128b/132b, lanes: %d, "
+			    "TX FFE request: " TRAIN_REQ_FMT "\n",
+			    encoder->base.base.id, encoder->base.name,
+			    drm_dp_phy_name(dp_phy),
+			    crtc_state->lane_count,
+			    TRAIN_REQ_TX_FFE_ARGS(link_status));
+	} else {
+		drm_dbg_kms(&i915->drm, "[ENCODER:%d:%s][%s] 8b/10b, lanes: %d, "
+			    "vswing request: " TRAIN_REQ_FMT ", "
+			    "pre-emphasis request: " TRAIN_REQ_FMT "\n",
+			    encoder->base.base.id, encoder->base.name,
+			    drm_dp_phy_name(dp_phy),
+			    crtc_state->lane_count,
+			    TRAIN_REQ_VSWING_ARGS(link_status),
+			    TRAIN_REQ_PREEMPH_ARGS(link_status));
+	}
+
+	for (lane = 0; lane < 4; lane++)
+		intel_dp->train_set[lane] =
+			intel_dp_get_lane_adjust_train(intel_dp, crtc_state,
+						       dp_phy, link_status, lane);
+}
+
+static int intel_dp_training_pattern_set_reg(struct intel_dp *intel_dp,
+					     enum drm_dp_phy dp_phy)
+{
+	return dp_phy == DP_PHY_DPRX ?
+		DP_TRAINING_PATTERN_SET :
+		DP_TRAINING_PATTERN_SET_PHY_REPEATER(dp_phy);
+}
+
+static bool
+intel_dp_set_link_train(struct intel_dp *intel_dp,
+			const struct intel_crtc_state *crtc_state,
+			enum drm_dp_phy dp_phy,
+			u8 dp_train_pat)
+{
+	int reg = intel_dp_training_pattern_set_reg(intel_dp, dp_phy);
+	u8 buf[sizeof(intel_dp->train_set) + 1];
+	int len;
+
+	intel_dp_program_link_training_pattern(intel_dp, crtc_state,
+					       dp_phy, dp_train_pat);
+
+	buf[0] = dp_train_pat;
+	/* DP_TRAINING_LANEx_SET follow DP_TRAINING_PATTERN_SET */
+	memcpy(buf + 1, intel_dp->train_set, crtc_state->lane_count);
+	len = crtc_state->lane_count + 1;
+
+	return drm_dp_dpcd_write(&intel_dp->aux, reg, buf, len) == len;
+}
+
+static char dp_training_pattern_name(u8 train_pat)
+{
+	switch (train_pat) {
+	case DP_TRAINING_PATTERN_1:
+	case DP_TRAINING_PATTERN_2:
+	case DP_TRAINING_PATTERN_3:
+		return '0' + train_pat;
+	case DP_TRAINING_PATTERN_4:
+		return '4';
+	default:
+		MISSING_CASE(train_pat);
+		return '?';
+	}
+}
+
+void
+intel_dp_program_link_training_pattern(struct intel_dp *intel_dp,
+				       const struct intel_crtc_state *crtc_state,
+				       enum drm_dp_phy dp_phy,
+				       u8 dp_train_pat)
+{
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	u8 train_pat = intel_dp_training_pattern_symbol(dp_train_pat);
+
+	if (train_pat != DP_TRAINING_PATTERN_DISABLE)
+		drm_dbg_kms(&i915->drm,
+			    "[ENCODER:%d:%s][%s] Using DP training pattern TPS%c\n",
+			    encoder->base.base.id, encoder->base.name,
+			    drm_dp_phy_name(dp_phy),
+			    dp_training_pattern_name(train_pat));
+
+	intel_dp->set_link_train(intel_dp, crtc_state, dp_train_pat);
+}
+
+#define TRAIN_SET_FMT "%d%s/%d%s/%d%s/%d%s"
+#define _TRAIN_SET_VSWING_ARGS(train_set) \
+	((train_set) & DP_TRAIN_VOLTAGE_SWING_MASK) >> DP_TRAIN_VOLTAGE_SWING_SHIFT, \
+	(train_set) & DP_TRAIN_MAX_SWING_REACHED ? "(max)" : ""
+#define TRAIN_SET_VSWING_ARGS(train_set) \
+	_TRAIN_SET_VSWING_ARGS((train_set)[0]), \
+	_TRAIN_SET_VSWING_ARGS((train_set)[1]), \
+	_TRAIN_SET_VSWING_ARGS((train_set)[2]), \
+	_TRAIN_SET_VSWING_ARGS((train_set)[3])
+#define _TRAIN_SET_PREEMPH_ARGS(train_set) \
+	((train_set) & DP_TRAIN_PRE_EMPHASIS_MASK) >> DP_TRAIN_PRE_EMPHASIS_SHIFT, \
+	(train_set) & DP_TRAIN_MAX_PRE_EMPHASIS_REACHED ? "(max)" : ""
+#define TRAIN_SET_PREEMPH_ARGS(train_set) \
+	_TRAIN_SET_PREEMPH_ARGS((train_set)[0]), \
+	_TRAIN_SET_PREEMPH_ARGS((train_set)[1]), \
+	_TRAIN_SET_PREEMPH_ARGS((train_set)[2]), \
+	_TRAIN_SET_PREEMPH_ARGS((train_set)[3])
+#define _TRAIN_SET_TX_FFE_ARGS(train_set) \
+	((train_set) & DP_TX_FFE_PRESET_VALUE_MASK), ""
+#define TRAIN_SET_TX_FFE_ARGS(train_set) \
+	_TRAIN_SET_TX_FFE_ARGS((train_set)[0]), \
+	_TRAIN_SET_TX_FFE_ARGS((train_set)[1]), \
+	_TRAIN_SET_TX_FFE_ARGS((train_set)[2]), \
+	_TRAIN_SET_TX_FFE_ARGS((train_set)[3])
+
+void intel_dp_set_signal_levels(struct intel_dp *intel_dp,
+				const struct intel_crtc_state *crtc_state,
+				enum drm_dp_phy dp_phy)
+{
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+
+	if (intel_dp_is_uhbr(crtc_state)) {
+		drm_dbg_kms(&i915->drm, "[ENCODER:%d:%s][%s] 128b/132b, lanes: %d, "
+			    "TX FFE presets: " TRAIN_SET_FMT "\n",
+			    encoder->base.base.id, encoder->base.name,
+			    drm_dp_phy_name(dp_phy),
+			    crtc_state->lane_count,
+			    TRAIN_SET_TX_FFE_ARGS(intel_dp->train_set));
+	} else {
+		drm_dbg_kms(&i915->drm, "[ENCODER:%d:%s][%s] 8b/10b, lanes: %d, "
+			    "vswing levels: " TRAIN_SET_FMT ", "
+			    "pre-emphasis levels: " TRAIN_SET_FMT "\n",
+			    encoder->base.base.id, encoder->base.name,
+			    drm_dp_phy_name(dp_phy),
+			    crtc_state->lane_count,
+			    TRAIN_SET_VSWING_ARGS(intel_dp->train_set),
+			    TRAIN_SET_PREEMPH_ARGS(intel_dp->train_set));
+	}
+
+	if (intel_dp_phy_is_downstream_of_source(intel_dp, dp_phy))
+		encoder->set_signal_levels(encoder, crtc_state);
+}
+
+static bool
+intel_dp_reset_link_train(struct intel_dp *intel_dp,
+			  const struct intel_crtc_state *crtc_state,
+			  enum drm_dp_phy dp_phy,
+			  u8 dp_train_pat)
+{
+	memset(intel_dp->train_set, 0, sizeof(intel_dp->train_set));
+	intel_dp_set_signal_levels(intel_dp, crtc_state, dp_phy);
+	return intel_dp_set_link_train(intel_dp, crtc_state, dp_phy, dp_train_pat);
+}
+
+static bool
+intel_dp_update_link_train(struct intel_dp *intel_dp,
+			   const struct intel_crtc_state *crtc_state,
+			   enum drm_dp_phy dp_phy)
+{
+	int reg = dp_phy == DP_PHY_DPRX ?
+			    DP_TRAINING_LANE0_SET :
+			    DP_TRAINING_LANE0_SET_PHY_REPEATER(dp_phy);
+	int ret;
+
+	intel_dp_set_signal_levels(intel_dp, crtc_state, dp_phy);
+
+	ret = drm_dp_dpcd_write(&intel_dp->aux, reg,
+				intel_dp->train_set, crtc_state->lane_count);
+
+	return ret == crtc_state->lane_count;
+}
+
+/* 128b/132b */
+static bool intel_dp_lane_max_tx_ffe_reached(u8 train_set_lane)
+{
+	return (train_set_lane & DP_TX_FFE_PRESET_VALUE_MASK) ==
+		DP_TX_FFE_PRESET_VALUE_MASK;
+}
+
+/*
+ * 8b/10b
+ *
+ * FIXME: The DP spec is very confusing here, also the Link CTS spec seems to
+ * have self contradicting tests around this area.
+ *
+ * In lieu of better ideas let's just stop when we've reached the max supported
+ * vswing with its max pre-emphasis, which is either 2+1 or 3+0 depending on
+ * whether vswing level 3 is supported or not.
+ */
+static bool intel_dp_lane_max_vswing_reached(u8 train_set_lane)
+{
+	u8 v = (train_set_lane & DP_TRAIN_VOLTAGE_SWING_MASK) >>
+		DP_TRAIN_VOLTAGE_SWING_SHIFT;
+	u8 p = (train_set_lane & DP_TRAIN_PRE_EMPHASIS_MASK) >>
+		DP_TRAIN_PRE_EMPHASIS_SHIFT;
+
+	if ((train_set_lane & DP_TRAIN_MAX_SWING_REACHED) == 0)
+		return false;
+
+	if (v + p != 3)
+		return false;
+
+	return true;
+}
+
+static bool intel_dp_link_max_vswing_reached(struct intel_dp *intel_dp,
+					     const struct intel_crtc_state *crtc_state)
+{
+	int lane;
+
+	for (lane = 0; lane < crtc_state->lane_count; lane++) {
+		u8 train_set_lane = intel_dp->train_set[lane];
+
+		if (intel_dp_is_uhbr(crtc_state)) {
+			if (!intel_dp_lane_max_tx_ffe_reached(train_set_lane))
+				return false;
+		} else {
+			if (!intel_dp_lane_max_vswing_reached(train_set_lane))
+				return false;
+		}
+	}
+
+	return true;
+}
+
+/*
+ * Prepare link training by configuring the link parameters. On DDI platforms
+ * also enable the port here.
+ */
+static bool
+intel_dp_prepare_link_train(struct intel_dp *intel_dp,
+			    const struct intel_crtc_state *crtc_state)
+{
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	u8 link_config[2];
+	u8 link_bw, rate_select;
+
+	if (intel_dp->prepare_link_retrain)
+		intel_dp->prepare_link_retrain(intel_dp, crtc_state);
+
+	intel_dp_compute_rate(intel_dp, crtc_state->port_clock,
+			      &link_bw, &rate_select);
+
+	/*
+	 * WaEdpLinkRateDataReload
+	 *
+	 * Parade PS8461E MUX (used on varius TGL+ laptops) needs
+	 * to snoop the link rates reported by the sink when we
+	 * use LINK_RATE_SET in order to operate in jitter cleaning
+	 * mode (as opposed to redriver mode). Unfortunately it
+	 * loses track of the snooped link rates when powered down,
+	 * so we need to make it re-snoop often. Without this high
+	 * link rates are not stable.
+	 */
+	if (!link_bw) {
+		struct intel_connector *connector = intel_dp->attached_connector;
+		__le16 sink_rates[DP_MAX_SUPPORTED_RATES];
+
+		drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s] Reloading eDP link rates\n",
+			    connector->base.base.id, connector->base.name);
+
+		drm_dp_dpcd_read(&intel_dp->aux, DP_SUPPORTED_LINK_RATES,
+				 sink_rates, sizeof(sink_rates));
+	}
+
+	if (link_bw)
+		drm_dbg_kms(&i915->drm,
+			    "[ENCODER:%d:%s] Using LINK_BW_SET value %02x\n",
+			    encoder->base.base.id, encoder->base.name, link_bw);
+	else
+		drm_dbg_kms(&i915->drm,
+			    "[ENCODER:%d:%s] Using LINK_RATE_SET value %02x\n",
+			    encoder->base.base.id, encoder->base.name, rate_select);
+
+	/* Write the link configuration data */
+	link_config[0] = link_bw;
+	link_config[1] = crtc_state->lane_count;
+	if (drm_dp_enhanced_frame_cap(intel_dp->dpcd))
+		link_config[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN;
+	drm_dp_dpcd_write(&intel_dp->aux, DP_LINK_BW_SET, link_config, 2);
+
+	/* eDP 1.4 rate select method. */
+	if (!link_bw)
+		drm_dp_dpcd_write(&intel_dp->aux, DP_LINK_RATE_SET,
+				  &rate_select, 1);
+
+	link_config[0] = crtc_state->vrr.enable ? DP_MSA_TIMING_PAR_IGNORE_EN : 0;
+	link_config[1] = intel_dp_is_uhbr(crtc_state) ?
+		DP_SET_ANSI_128B132B : DP_SET_ANSI_8B10B;
+	drm_dp_dpcd_write(&intel_dp->aux, DP_DOWNSPREAD_CTRL, link_config, 2);
+
+	return true;
+}
+
+static bool intel_dp_adjust_request_changed(const struct intel_crtc_state *crtc_state,
+					    const u8 old_link_status[DP_LINK_STATUS_SIZE],
+					    const u8 new_link_status[DP_LINK_STATUS_SIZE])
+{
+	int lane;
+
+	for (lane = 0; lane < crtc_state->lane_count; lane++) {
+		u8 old, new;
+
+		if (intel_dp_is_uhbr(crtc_state)) {
+			old = drm_dp_get_adjust_tx_ffe_preset(old_link_status, lane);
+			new = drm_dp_get_adjust_tx_ffe_preset(new_link_status, lane);
+		} else {
+			old = drm_dp_get_adjust_request_voltage(old_link_status, lane) |
+				drm_dp_get_adjust_request_pre_emphasis(old_link_status, lane);
+			new = drm_dp_get_adjust_request_voltage(new_link_status, lane) |
+				drm_dp_get_adjust_request_pre_emphasis(new_link_status, lane);
+		}
+
+		if (old != new)
+			return true;
+	}
+
+	return false;
+}
+
+void
+intel_dp_dump_link_status(struct intel_dp *intel_dp, enum drm_dp_phy dp_phy,
+			  const u8 link_status[DP_LINK_STATUS_SIZE])
+{
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+
+	drm_dbg_kms(&i915->drm,
+		    "[ENCODER:%d:%s][%s] ln0_1:0x%x ln2_3:0x%x align:0x%x sink:0x%x adj_req0_1:0x%x adj_req2_3:0x%x\n",
+		    encoder->base.base.id, encoder->base.name,
+		    drm_dp_phy_name(dp_phy),
+		    link_status[0], link_status[1], link_status[2],
+		    link_status[3], link_status[4], link_status[5]);
+}
+
+/*
+ * Perform the link training clock recovery phase on the given DP PHY using
+ * training pattern 1.
+ */
+static bool
+intel_dp_link_training_clock_recovery(struct intel_dp *intel_dp,
+				      const struct intel_crtc_state *crtc_state,
+				      enum drm_dp_phy dp_phy)
+{
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	u8 old_link_status[DP_LINK_STATUS_SIZE] = {};
+	int voltage_tries, cr_tries, max_cr_tries;
+	u8 link_status[DP_LINK_STATUS_SIZE];
+	bool max_vswing_reached = false;
+	int delay_us;
+
+	delay_us = drm_dp_read_clock_recovery_delay(&intel_dp->aux,
+						    intel_dp->dpcd, dp_phy,
+						    intel_dp_is_uhbr(crtc_state));
+
+	/* clock recovery */
+	if (!intel_dp_reset_link_train(intel_dp, crtc_state, dp_phy,
+				       DP_TRAINING_PATTERN_1 |
+				       DP_LINK_SCRAMBLING_DISABLE)) {
+		drm_err(&i915->drm, "[ENCODER:%d:%s][%s] Failed to enable link training\n",
+			encoder->base.base.id, encoder->base.name,
+			drm_dp_phy_name(dp_phy));
+		return false;
+	}
+
+	/*
+	 * The DP 1.4 spec defines the max clock recovery retries value
+	 * as 10 but for pre-DP 1.4 devices we set a very tolerant
+	 * retry limit of 80 (4 voltage levels x 4 preemphasis levels x
+	 * x 5 identical voltage retries). Since the previous specs didn't
+	 * define a limit and created the possibility of an infinite loop
+	 * we want to prevent any sync from triggering that corner case.
+	 */
+	if (intel_dp->dpcd[DP_DPCD_REV] >= DP_DPCD_REV_14)
+		max_cr_tries = 10;
+	else
+		max_cr_tries = 80;
+
+	voltage_tries = 1;
+	for (cr_tries = 0; cr_tries < max_cr_tries; ++cr_tries) {
+		usleep_range(delay_us, 2 * delay_us);
+
+		if (drm_dp_dpcd_read_phy_link_status(&intel_dp->aux, dp_phy,
+						     link_status) < 0) {
+			drm_err(&i915->drm, "[ENCODER:%d:%s][%s] Failed to get link status\n",
+				encoder->base.base.id, encoder->base.name,
+				drm_dp_phy_name(dp_phy));
+			return false;
+		}
+
+		if (drm_dp_clock_recovery_ok(link_status, crtc_state->lane_count)) {
+			drm_dbg_kms(&i915->drm,
+				    "[ENCODER:%d:%s][%s] Clock recovery OK\n",
+				    encoder->base.base.id, encoder->base.name,
+				    drm_dp_phy_name(dp_phy));
+			return true;
+		}
+
+		if (voltage_tries == 5) {
+			intel_dp_dump_link_status(intel_dp, dp_phy, link_status);
+			drm_dbg_kms(&i915->drm,
+				    "[ENCODER:%d:%s][%s] Same voltage tried 5 times\n",
+				    encoder->base.base.id, encoder->base.name,
+				    drm_dp_phy_name(dp_phy));
+			return false;
+		}
+
+		if (max_vswing_reached) {
+			intel_dp_dump_link_status(intel_dp, dp_phy, link_status);
+			drm_dbg_kms(&i915->drm,
+				    "[ENCODER:%d:%s][%s] Max Voltage Swing reached\n",
+				    encoder->base.base.id, encoder->base.name,
+				    drm_dp_phy_name(dp_phy));
+			return false;
+		}
+
+		/* Update training set as requested by target */
+		intel_dp_get_adjust_train(intel_dp, crtc_state, dp_phy,
+					  link_status);
+		if (!intel_dp_update_link_train(intel_dp, crtc_state, dp_phy)) {
+			drm_err(&i915->drm,
+				"[ENCODER:%d:%s][%s] Failed to update link training\n",
+				encoder->base.base.id, encoder->base.name,
+				drm_dp_phy_name(dp_phy));
+			return false;
+		}
+
+		if (!intel_dp_adjust_request_changed(crtc_state, old_link_status, link_status))
+			++voltage_tries;
+		else
+			voltage_tries = 1;
+
+		memcpy(old_link_status, link_status, sizeof(link_status));
+
+		if (intel_dp_link_max_vswing_reached(intel_dp, crtc_state))
+			max_vswing_reached = true;
+	}
+
+	intel_dp_dump_link_status(intel_dp, dp_phy, link_status);
+	drm_err(&i915->drm,
+		"[ENCODER:%d:%s][%s] Failed clock recovery %d times, giving up!\n",
+		encoder->base.base.id, encoder->base.name,
+		drm_dp_phy_name(dp_phy), max_cr_tries);
+
+	return false;
+}
+
+/*
+ * Pick Training Pattern Sequence (TPS) for channel equalization. 128b/132b TPS2
+ * for UHBR+, TPS4 for HBR3 or for 1.4 devices that support it, TPS3 for HBR2 or
+ * 1.2 devices that support it, TPS2 otherwise.
+ */
+static u32 intel_dp_training_pattern(struct intel_dp *intel_dp,
+				     const struct intel_crtc_state *crtc_state,
+				     enum drm_dp_phy dp_phy)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	bool source_tps3, sink_tps3, source_tps4, sink_tps4;
+
+	/* UHBR+ use separate 128b/132b TPS2 */
+	if (intel_dp_is_uhbr(crtc_state))
+		return DP_TRAINING_PATTERN_2;
+
+	/*
+	 * TPS4 support is mandatory for all downstream devices that
+	 * support HBR3. There are no known eDP panels that support
+	 * TPS4 as of Feb 2018 as per VESA eDP_v1.4b_E1 specification.
+	 * LTTPRs must support TPS4.
+	 */
+	source_tps4 = intel_dp_source_supports_tps4(i915);
+	sink_tps4 = dp_phy != DP_PHY_DPRX ||
+		    drm_dp_tps4_supported(intel_dp->dpcd);
+	if (source_tps4 && sink_tps4) {
+		return DP_TRAINING_PATTERN_4;
+	} else if (crtc_state->port_clock == 810000) {
+		if (!source_tps4)
+			drm_dbg_kms(&i915->drm,
+				    "8.1 Gbps link rate without source TPS4 support\n");
+		if (!sink_tps4)
+			drm_dbg_kms(&i915->drm,
+				    "8.1 Gbps link rate without sink TPS4 support\n");
+	}
+
+	/*
+	 * TPS3 support is mandatory for downstream devices that
+	 * support HBR2. However, not all sinks follow the spec.
+	 */
+	source_tps3 = intel_dp_source_supports_tps3(i915);
+	sink_tps3 = dp_phy != DP_PHY_DPRX ||
+		    drm_dp_tps3_supported(intel_dp->dpcd);
+	if (source_tps3 && sink_tps3) {
+		return  DP_TRAINING_PATTERN_3;
+	} else if (crtc_state->port_clock >= 540000) {
+		if (!source_tps3)
+			drm_dbg_kms(&i915->drm,
+				    ">=5.4/6.48 Gbps link rate without source TPS3 support\n");
+		if (!sink_tps3)
+			drm_dbg_kms(&i915->drm,
+				    ">=5.4/6.48 Gbps link rate without sink TPS3 support\n");
+	}
+
+	return DP_TRAINING_PATTERN_2;
+}
+
+/*
+ * Perform the link training channel equalization phase on the given DP PHY
+ * using one of training pattern 2, 3 or 4 depending on the source and
+ * sink capabilities.
+ */
+static bool
+intel_dp_link_training_channel_equalization(struct intel_dp *intel_dp,
+					    const struct intel_crtc_state *crtc_state,
+					    enum drm_dp_phy dp_phy)
+{
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	int tries;
+	u32 training_pattern;
+	u8 link_status[DP_LINK_STATUS_SIZE];
+	bool channel_eq = false;
+	int delay_us;
+
+	delay_us = drm_dp_read_channel_eq_delay(&intel_dp->aux,
+						intel_dp->dpcd, dp_phy,
+						intel_dp_is_uhbr(crtc_state));
+
+	training_pattern = intel_dp_training_pattern(intel_dp, crtc_state, dp_phy);
+	/* Scrambling is disabled for TPS2/3 and enabled for TPS4 */
+	if (training_pattern != DP_TRAINING_PATTERN_4)
+		training_pattern |= DP_LINK_SCRAMBLING_DISABLE;
+
+	/* channel equalization */
+	if (!intel_dp_set_link_train(intel_dp, crtc_state, dp_phy,
+				     training_pattern)) {
+		drm_err(&i915->drm,
+			"[ENCODER:%d:%s][%s] Failed to start channel equalization\n",
+			encoder->base.base.id, encoder->base.name,
+			drm_dp_phy_name(dp_phy));
+		return false;
+	}
+
+	for (tries = 0; tries < 5; tries++) {
+		usleep_range(delay_us, 2 * delay_us);
+
+		if (drm_dp_dpcd_read_phy_link_status(&intel_dp->aux, dp_phy,
+						     link_status) < 0) {
+			drm_err(&i915->drm,
+				"[ENCODER:%d:%s][%s] Failed to get link status\n",
+				encoder->base.base.id, encoder->base.name,
+				drm_dp_phy_name(dp_phy));
+			break;
+		}
+
+		/* Make sure clock is still ok */
+		if (!drm_dp_clock_recovery_ok(link_status,
+					      crtc_state->lane_count)) {
+			intel_dp_dump_link_status(intel_dp, dp_phy, link_status);
+			drm_dbg_kms(&i915->drm,
+				    "[ENCODER:%d:%s][%s] Clock recovery check failed, cannot "
+				    "continue channel equalization\n",
+				    encoder->base.base.id, encoder->base.name,
+				    drm_dp_phy_name(dp_phy));
+			break;
+		}
+
+		if (drm_dp_channel_eq_ok(link_status,
+					 crtc_state->lane_count)) {
+			channel_eq = true;
+			drm_dbg_kms(&i915->drm,
+				    "[ENCODER:%d:%s][%s] Channel EQ done. DP Training successful\n",
+				    encoder->base.base.id, encoder->base.name,
+				    drm_dp_phy_name(dp_phy));
+			break;
+		}
+
+		/* Update training set as requested by target */
+		intel_dp_get_adjust_train(intel_dp, crtc_state, dp_phy,
+					  link_status);
+		if (!intel_dp_update_link_train(intel_dp, crtc_state, dp_phy)) {
+			drm_err(&i915->drm,
+				"[ENCODER:%d:%s][%s] Failed to update link training\n",
+				encoder->base.base.id, encoder->base.name,
+				drm_dp_phy_name(dp_phy));
+			break;
+		}
+	}
+
+	/* Try 5 times, else fail and try at lower BW */
+	if (tries == 5) {
+		intel_dp_dump_link_status(intel_dp, dp_phy, link_status);
+		drm_dbg_kms(&i915->drm,
+			    "[ENCODER:%d:%s][%s] Channel equalization failed 5 times\n",
+			    encoder->base.base.id, encoder->base.name,
+			    drm_dp_phy_name(dp_phy));
+	}
+
+	return channel_eq;
+}
+
+static bool intel_dp_disable_dpcd_training_pattern(struct intel_dp *intel_dp,
+						   enum drm_dp_phy dp_phy)
+{
+	int reg = intel_dp_training_pattern_set_reg(intel_dp, dp_phy);
+	u8 val = DP_TRAINING_PATTERN_DISABLE;
+
+	return drm_dp_dpcd_write(&intel_dp->aux, reg, &val, 1) == 1;
+}
+
+static int
+intel_dp_128b132b_intra_hop(struct intel_dp *intel_dp,
+			    const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	u8 sink_status;
+	int ret;
+
+	ret = drm_dp_dpcd_readb(&intel_dp->aux, DP_SINK_STATUS, &sink_status);
+	if (ret != 1) {
+		drm_dbg_kms(&i915->drm, "Failed to read sink status\n");
+		return ret < 0 ? ret : -EIO;
+	}
+
+	return sink_status & DP_INTRA_HOP_AUX_REPLY_INDICATION ? 1 : 0;
+}
+
+/**
+ * intel_dp_stop_link_train - stop link training
+ * @intel_dp: DP struct
+ * @crtc_state: state for CRTC attached to the encoder
+ *
+ * Stop the link training of the @intel_dp port, disabling the training
+ * pattern in the sink's DPCD, and disabling the test pattern symbol
+ * generation on the port.
+ *
+ * What symbols are output on the port after this point is
+ * platform specific: On DDI/VLV/CHV platforms it will be the idle pattern
+ * with the pipe being disabled, on older platforms it's HW specific if/how an
+ * idle pattern is generated, as the pipe is already enabled here for those.
+ *
+ * This function must be called after intel_dp_start_link_train().
+ */
+void intel_dp_stop_link_train(struct intel_dp *intel_dp,
+			      const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+
+	intel_dp->link_trained = true;
+
+	intel_dp_disable_dpcd_training_pattern(intel_dp, DP_PHY_DPRX);
+	intel_dp_program_link_training_pattern(intel_dp, crtc_state, DP_PHY_DPRX,
+					       DP_TRAINING_PATTERN_DISABLE);
+
+	if (intel_dp_is_uhbr(crtc_state) &&
+	    wait_for(intel_dp_128b132b_intra_hop(intel_dp, crtc_state) == 0, 500)) {
+		drm_dbg_kms(&i915->drm,
+			    "[ENCODER:%d:%s] 128b/132b intra-hop not clearing\n",
+			    encoder->base.base.id, encoder->base.name);
+	}
+}
+
+static bool
+intel_dp_link_train_phy(struct intel_dp *intel_dp,
+			const struct intel_crtc_state *crtc_state,
+			enum drm_dp_phy dp_phy)
+{
+	struct intel_connector *connector = intel_dp->attached_connector;
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+	bool ret = false;
+
+	if (!intel_dp_link_training_clock_recovery(intel_dp, crtc_state, dp_phy))
+		goto out;
+
+	if (!intel_dp_link_training_channel_equalization(intel_dp, crtc_state, dp_phy))
+		goto out;
+
+	ret = true;
+
+out:
+	drm_dbg_kms(&dp_to_i915(intel_dp)->drm,
+		    "[CONNECTOR:%d:%s][ENCODER:%d:%s][%s] Link Training %s at link rate = %d, lane count = %d\n",
+		    connector->base.base.id, connector->base.name,
+		    encoder->base.base.id, encoder->base.name,
+		    drm_dp_phy_name(dp_phy),
+		    ret ? "passed" : "failed",
+		    crtc_state->port_clock, crtc_state->lane_count);
+
+	return ret;
+}
+
+static void intel_dp_schedule_fallback_link_training(struct intel_dp *intel_dp,
+						     const struct intel_crtc_state *crtc_state)
+{
+	struct intel_connector *intel_connector = intel_dp->attached_connector;
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+
+	if (intel_dp->hobl_active) {
+		drm_dbg_kms(&dp_to_i915(intel_dp)->drm,
+			    "[ENCODER:%d:%s] Link Training failed with HOBL active, "
+			    "not enabling it from now on",
+			    encoder->base.base.id, encoder->base.name);
+		intel_dp->hobl_failed = true;
+	} else if (intel_dp_get_link_train_fallback_values(intel_dp,
+							   crtc_state->port_clock,
+							   crtc_state->lane_count)) {
+		return;
+	}
+
+	/* Schedule a Hotplug Uevent to userspace to start modeset */
+	schedule_work(&intel_connector->modeset_retry_work);
+}
+
+/* Perform the link training on all LTTPRs and the DPRX on a link. */
+static bool
+intel_dp_link_train_all_phys(struct intel_dp *intel_dp,
+			     const struct intel_crtc_state *crtc_state,
+			     int lttpr_count)
+{
+	bool ret = true;
+	int i;
+
+	for (i = lttpr_count - 1; i >= 0; i--) {
+		enum drm_dp_phy dp_phy = DP_PHY_LTTPR(i);
+
+		ret = intel_dp_link_train_phy(intel_dp, crtc_state, dp_phy);
+		intel_dp_disable_dpcd_training_pattern(intel_dp, dp_phy);
+
+		if (!ret)
+			break;
+	}
+
+	if (ret)
+		ret = intel_dp_link_train_phy(intel_dp, crtc_state, DP_PHY_DPRX);
+
+	if (intel_dp->set_idle_link_train)
+		intel_dp->set_idle_link_train(intel_dp, crtc_state);
+
+	return ret;
+}
+
+/*
+ * 128b/132b DP LANEx_EQ_DONE Sequence (DP 2.0 E11 3.5.2.16.1)
+ */
+static bool
+intel_dp_128b132b_lane_eq(struct intel_dp *intel_dp,
+			  const struct intel_crtc_state *crtc_state)
+{
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	u8 link_status[DP_LINK_STATUS_SIZE];
+	int delay_us;
+	int try, max_tries = 20;
+	unsigned long deadline;
+	bool timeout = false;
+
+	/*
+	 * Reset signal levels. Start transmitting 128b/132b TPS1.
+	 *
+	 * Put DPRX and LTTPRs (if any) into intra-hop AUX mode by writing TPS1
+	 * in DP_TRAINING_PATTERN_SET.
+	 */
+	if (!intel_dp_reset_link_train(intel_dp, crtc_state, DP_PHY_DPRX,
+				       DP_TRAINING_PATTERN_1)) {
+		drm_err(&i915->drm,
+			"[ENCODER:%d:%s] Failed to start 128b/132b TPS1\n",
+			encoder->base.base.id, encoder->base.name);
+		return false;
+	}
+
+	delay_us = drm_dp_128b132b_read_aux_rd_interval(&intel_dp->aux);
+
+	/* Read the initial TX FFE settings. */
+	if (drm_dp_dpcd_read_link_status(&intel_dp->aux, link_status) < 0) {
+		drm_err(&i915->drm,
+			"[ENCODER:%d:%s] Failed to read TX FFE presets\n",
+			encoder->base.base.id, encoder->base.name);
+		return false;
+	}
+
+	/* Update signal levels and training set as requested. */
+	intel_dp_get_adjust_train(intel_dp, crtc_state, DP_PHY_DPRX, link_status);
+	if (!intel_dp_update_link_train(intel_dp, crtc_state, DP_PHY_DPRX)) {
+		drm_err(&i915->drm,
+			"[ENCODER:%d:%s] Failed to set initial TX FFE settings\n",
+			encoder->base.base.id, encoder->base.name);
+		return false;
+	}
+
+	/* Start transmitting 128b/132b TPS2. */
+	if (!intel_dp_set_link_train(intel_dp, crtc_state, DP_PHY_DPRX,
+				     DP_TRAINING_PATTERN_2)) {
+		drm_err(&i915->drm,
+			"[ENCODER:%d:%s] Failed to start 128b/132b TPS2\n",
+			encoder->base.base.id, encoder->base.name);
+		return false;
+	}
+
+	/* Time budget for the LANEx_EQ_DONE Sequence */
+	deadline = jiffies + msecs_to_jiffies_timeout(400);
+
+	for (try = 0; try < max_tries; try++) {
+		usleep_range(delay_us, 2 * delay_us);
+
+		/*
+		 * The delay may get updated. The transmitter shall read the
+		 * delay before link status during link training.
+		 */
+		delay_us = drm_dp_128b132b_read_aux_rd_interval(&intel_dp->aux);
+
+		if (drm_dp_dpcd_read_link_status(&intel_dp->aux, link_status) < 0) {
+			drm_err(&i915->drm,
+				"[ENCODER:%d:%s] Failed to read link status\n",
+				encoder->base.base.id, encoder->base.name);
+			return false;
+		}
+
+		if (drm_dp_128b132b_link_training_failed(link_status)) {
+			intel_dp_dump_link_status(intel_dp, DP_PHY_DPRX, link_status);
+			drm_err(&i915->drm,
+				"[ENCODER:%d:%s] Downstream link training failure\n",
+				encoder->base.base.id, encoder->base.name);
+			return false;
+		}
+
+		if (drm_dp_128b132b_lane_channel_eq_done(link_status, crtc_state->lane_count)) {
+			drm_dbg_kms(&i915->drm,
+				    "[ENCODER:%d:%s] Lane channel eq done\n",
+				    encoder->base.base.id, encoder->base.name);
+			break;
+		}
+
+		if (timeout) {
+			intel_dp_dump_link_status(intel_dp, DP_PHY_DPRX, link_status);
+			drm_err(&i915->drm,
+				"[ENCODER:%d:%s] Lane channel eq timeout\n",
+				encoder->base.base.id, encoder->base.name);
+			return false;
+		}
+
+		if (time_after(jiffies, deadline))
+			timeout = true; /* try one last time after deadline */
+
+		/* Update signal levels and training set as requested. */
+		intel_dp_get_adjust_train(intel_dp, crtc_state, DP_PHY_DPRX, link_status);
+		if (!intel_dp_update_link_train(intel_dp, crtc_state, DP_PHY_DPRX)) {
+			drm_err(&i915->drm,
+				"[ENCODER:%d:%s] Failed to update TX FFE settings\n",
+				encoder->base.base.id, encoder->base.name);
+			return false;
+		}
+	}
+
+	if (try == max_tries) {
+		intel_dp_dump_link_status(intel_dp, DP_PHY_DPRX, link_status);
+		drm_err(&i915->drm,
+			"[ENCODER:%d:%s] Max loop count reached\n",
+			encoder->base.base.id, encoder->base.name);
+		return false;
+	}
+
+	for (;;) {
+		if (time_after(jiffies, deadline))
+			timeout = true; /* try one last time after deadline */
+
+		if (drm_dp_dpcd_read_link_status(&intel_dp->aux, link_status) < 0) {
+			drm_err(&i915->drm,
+				"[ENCODER:%d:%s] Failed to read link status\n",
+				encoder->base.base.id, encoder->base.name);
+			return false;
+		}
+
+		if (drm_dp_128b132b_link_training_failed(link_status)) {
+			intel_dp_dump_link_status(intel_dp, DP_PHY_DPRX, link_status);
+			drm_err(&i915->drm,
+				"[ENCODER:%d:%s] Downstream link training failure\n",
+				encoder->base.base.id, encoder->base.name);
+			return false;
+		}
+
+		if (drm_dp_128b132b_eq_interlane_align_done(link_status)) {
+			drm_dbg_kms(&i915->drm,
+				    "[ENCODER:%d:%s] Interlane align done\n",
+				    encoder->base.base.id, encoder->base.name);
+			break;
+		}
+
+		if (timeout) {
+			intel_dp_dump_link_status(intel_dp, DP_PHY_DPRX, link_status);
+			drm_err(&i915->drm,
+				"[ENCODER:%d:%s] Interlane align timeout\n",
+				encoder->base.base.id, encoder->base.name);
+			return false;
+		}
+
+		usleep_range(2000, 3000);
+	}
+
+	return true;
+}
+
+/*
+ * 128b/132b DP LANEx_CDS_DONE Sequence (DP 2.0 E11 3.5.2.16.2)
+ */
+static bool
+intel_dp_128b132b_lane_cds(struct intel_dp *intel_dp,
+			   const struct intel_crtc_state *crtc_state,
+			   int lttpr_count)
+{
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	u8 link_status[DP_LINK_STATUS_SIZE];
+	unsigned long deadline;
+
+	if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TRAINING_PATTERN_SET,
+			       DP_TRAINING_PATTERN_2_CDS) != 1) {
+		drm_err(&i915->drm,
+			"[ENCODER:%d:%s] Failed to start 128b/132b TPS2 CDS\n",
+			encoder->base.base.id, encoder->base.name);
+		return false;
+	}
+
+	/* Time budget for the LANEx_CDS_DONE Sequence */
+	deadline = jiffies + msecs_to_jiffies_timeout((lttpr_count + 1) * 20);
+
+	for (;;) {
+		bool timeout = false;
+
+		if (time_after(jiffies, deadline))
+			timeout = true; /* try one last time after deadline */
+
+		usleep_range(2000, 3000);
+
+		if (drm_dp_dpcd_read_link_status(&intel_dp->aux, link_status) < 0) {
+			drm_err(&i915->drm,
+				"[ENCODER:%d:%s] Failed to read link status\n",
+				encoder->base.base.id, encoder->base.name);
+			return false;
+		}
+
+		if (drm_dp_128b132b_eq_interlane_align_done(link_status) &&
+		    drm_dp_128b132b_cds_interlane_align_done(link_status) &&
+		    drm_dp_128b132b_lane_symbol_locked(link_status, crtc_state->lane_count)) {
+			drm_dbg_kms(&i915->drm,
+				    "[ENCODER:%d:%s] CDS interlane align done\n",
+				    encoder->base.base.id, encoder->base.name);
+			break;
+		}
+
+		if (drm_dp_128b132b_link_training_failed(link_status)) {
+			intel_dp_dump_link_status(intel_dp, DP_PHY_DPRX, link_status);
+			drm_err(&i915->drm,
+				"[ENCODER:%d:%s] Downstream link training failure\n",
+				encoder->base.base.id, encoder->base.name);
+			return false;
+		}
+
+		if (timeout) {
+			intel_dp_dump_link_status(intel_dp, DP_PHY_DPRX, link_status);
+			drm_err(&i915->drm,
+				"[ENCODER:%d:%s] CDS timeout\n",
+				encoder->base.base.id, encoder->base.name);
+			return false;
+		}
+	}
+
+	/* FIXME: Should DP_TRAINING_PATTERN_DISABLE be written first? */
+	if (intel_dp->set_idle_link_train)
+		intel_dp->set_idle_link_train(intel_dp, crtc_state);
+
+	return true;
+}
+
+/*
+ * 128b/132b link training sequence. (DP 2.0 E11 SCR on link training.)
+ */
+static bool
+intel_dp_128b132b_link_train(struct intel_dp *intel_dp,
+			     const struct intel_crtc_state *crtc_state,
+			     int lttpr_count)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	struct intel_connector *connector = intel_dp->attached_connector;
+	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+	bool passed = false;
+
+	if (wait_for(intel_dp_128b132b_intra_hop(intel_dp, crtc_state) == 0, 500)) {
+		drm_err(&i915->drm,
+			"[ENCODER:%d:%s] 128b/132b intra-hop not clear\n",
+			encoder->base.base.id, encoder->base.name);
+		return false;
+	}
+
+	if (intel_dp_128b132b_lane_eq(intel_dp, crtc_state) &&
+	    intel_dp_128b132b_lane_cds(intel_dp, crtc_state, lttpr_count))
+		passed = true;
+
+	drm_dbg_kms(&i915->drm,
+		    "[CONNECTOR:%d:%s][ENCODER:%d:%s] 128b/132b Link Training %s at link rate = %d, lane count = %d\n",
+		    connector->base.base.id, connector->base.name,
+		    encoder->base.base.id, encoder->base.name,
+		    passed ? "passed" : "failed",
+		    crtc_state->port_clock, crtc_state->lane_count);
+
+	return passed;
+}
+
+/**
+ * intel_dp_start_link_train - start link training
+ * @intel_dp: DP struct
+ * @crtc_state: state for CRTC attached to the encoder
+ *
+ * Start the link training of the @intel_dp port, scheduling a fallback
+ * retraining with reduced link rate/lane parameters if the link training
+ * fails.
+ * After calling this function intel_dp_stop_link_train() must be called.
+ */
+void intel_dp_start_link_train(struct intel_dp *intel_dp,
+			       const struct intel_crtc_state *crtc_state)
+{
+	bool passed;
+	/*
+	 * TODO: Reiniting LTTPRs here won't be needed once proper connector
+	 * HW state readout is added.
+	 */
+	int lttpr_count = intel_dp_init_lttpr_and_dprx_caps(intel_dp);
+
+	if (lttpr_count < 0)
+		/* Still continue with enabling the port and link training. */
+		lttpr_count = 0;
+
+	intel_dp_prepare_link_train(intel_dp, crtc_state);
+
+	if (intel_dp_is_uhbr(crtc_state))
+		passed = intel_dp_128b132b_link_train(intel_dp, crtc_state, lttpr_count);
+	else
+		passed = intel_dp_link_train_all_phys(intel_dp, crtc_state, lttpr_count);
+
+	if (!passed)
+		intel_dp_schedule_fallback_link_training(intel_dp, crtc_state);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_dp_link_training.h b/drivers/gpu/drm/i915/display/intel_dp_link_training.h
new file mode 100644
index 000000000..7fa1c0833
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dp_link_training.h
@@ -0,0 +1,42 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_DP_LINK_TRAINING_H__
+#define __INTEL_DP_LINK_TRAINING_H__
+
+#include <drm/display/drm_dp_helper.h>
+
+struct intel_crtc_state;
+struct intel_dp;
+
+int intel_dp_init_lttpr_and_dprx_caps(struct intel_dp *intel_dp);
+
+void intel_dp_get_adjust_train(struct intel_dp *intel_dp,
+			       const struct intel_crtc_state *crtc_state,
+			       enum drm_dp_phy dp_phy,
+			       const u8 link_status[DP_LINK_STATUS_SIZE]);
+void intel_dp_program_link_training_pattern(struct intel_dp *intel_dp,
+					    const struct intel_crtc_state *crtc_state,
+					    enum drm_dp_phy dp_phy,
+					    u8 dp_train_pat);
+void intel_dp_set_signal_levels(struct intel_dp *intel_dp,
+				const struct intel_crtc_state *crtc_state,
+				enum drm_dp_phy dp_phy);
+void intel_dp_start_link_train(struct intel_dp *intel_dp,
+			       const struct intel_crtc_state *crtc_state);
+void intel_dp_stop_link_train(struct intel_dp *intel_dp,
+			      const struct intel_crtc_state *crtc_state);
+
+void
+intel_dp_dump_link_status(struct intel_dp *intel_dp, enum drm_dp_phy dp_phy,
+			  const u8 link_status[DP_LINK_STATUS_SIZE]);
+
+/* Get the TPSx symbol type of the value programmed to DP_TRAINING_PATTERN_SET */
+static inline u8 intel_dp_training_pattern_symbol(u8 pattern)
+{
+	return pattern & ~DP_LINK_SCRAMBLING_DISABLE;
+}
+
+#endif /* __INTEL_DP_LINK_TRAINING_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
new file mode 100644
index 000000000..eec32f682
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -0,0 +1,1076 @@
+/*
+ * Copyright © 2008 Intel Corporation
+ *             2014 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ */
+
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_probe_helper.h>
+
+#include "i915_drv.h"
+#include "intel_atomic.h"
+#include "intel_audio.h"
+#include "intel_connector.h"
+#include "intel_crtc.h"
+#include "intel_ddi.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_dp.h"
+#include "intel_dp_hdcp.h"
+#include "intel_dp_mst.h"
+#include "intel_dpio_phy.h"
+#include "intel_hdcp.h"
+#include "intel_hotplug.h"
+#include "skl_scaler.h"
+
+static int intel_dp_mst_compute_link_config(struct intel_encoder *encoder,
+					    struct intel_crtc_state *crtc_state,
+					    struct drm_connector_state *conn_state,
+					    struct link_config_limits *limits)
+{
+	struct drm_atomic_state *state = crtc_state->uapi.state;
+	struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
+	struct intel_dp *intel_dp = &intel_mst->primary->dp;
+	struct drm_dp_mst_topology_state *mst_state;
+	struct intel_connector *connector =
+		to_intel_connector(conn_state->connector);
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+	const struct drm_display_mode *adjusted_mode =
+		&crtc_state->hw.adjusted_mode;
+	int bpp, slots = -EINVAL;
+
+	mst_state = drm_atomic_get_mst_topology_state(state, &intel_dp->mst_mgr);
+	if (IS_ERR(mst_state))
+		return PTR_ERR(mst_state);
+
+	crtc_state->lane_count = limits->max_lane_count;
+	crtc_state->port_clock = limits->max_rate;
+
+	// TODO: Handle pbn_div changes by adding a new MST helper
+	if (!mst_state->pbn_div) {
+		mst_state->pbn_div = drm_dp_get_vc_payload_bw(&intel_dp->mst_mgr,
+							      limits->max_rate,
+							      limits->max_lane_count);
+	}
+
+	for (bpp = limits->max_bpp; bpp >= limits->min_bpp; bpp -= 2 * 3) {
+		crtc_state->pipe_bpp = bpp;
+
+		crtc_state->pbn = drm_dp_calc_pbn_mode(adjusted_mode->crtc_clock,
+						       crtc_state->pipe_bpp,
+						       false);
+		slots = drm_dp_atomic_find_time_slots(state, &intel_dp->mst_mgr,
+						      connector->port, crtc_state->pbn);
+		if (slots == -EDEADLK)
+			return slots;
+		if (slots >= 0)
+			break;
+	}
+
+	if (slots < 0) {
+		drm_dbg_kms(&i915->drm, "failed finding vcpi slots:%d\n",
+			    slots);
+		return slots;
+	}
+
+	intel_link_compute_m_n(crtc_state->pipe_bpp,
+			       crtc_state->lane_count,
+			       adjusted_mode->crtc_clock,
+			       crtc_state->port_clock,
+			       &crtc_state->dp_m_n,
+			       crtc_state->fec_enable);
+	crtc_state->dp_m_n.tu = slots;
+
+	return 0;
+}
+
+static int intel_dp_mst_update_slots(struct intel_encoder *encoder,
+				     struct intel_crtc_state *crtc_state,
+				     struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
+	struct intel_dp *intel_dp = &intel_mst->primary->dp;
+	struct drm_dp_mst_topology_mgr *mgr = &intel_dp->mst_mgr;
+	struct drm_dp_mst_topology_state *topology_state;
+	u8 link_coding_cap = intel_dp_is_uhbr(crtc_state) ?
+		DP_CAP_ANSI_128B132B : DP_CAP_ANSI_8B10B;
+
+	topology_state = drm_atomic_get_mst_topology_state(conn_state->state, mgr);
+	if (IS_ERR(topology_state)) {
+		drm_dbg_kms(&i915->drm, "slot update failed\n");
+		return PTR_ERR(topology_state);
+	}
+
+	drm_dp_mst_update_slots(topology_state, link_coding_cap);
+
+	return 0;
+}
+
+static int intel_dp_mst_compute_config(struct intel_encoder *encoder,
+				       struct intel_crtc_state *pipe_config,
+				       struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
+	struct intel_dp *intel_dp = &intel_mst->primary->dp;
+	struct intel_connector *connector =
+		to_intel_connector(conn_state->connector);
+	struct intel_digital_connector_state *intel_conn_state =
+		to_intel_digital_connector_state(conn_state);
+	const struct drm_display_mode *adjusted_mode =
+		&pipe_config->hw.adjusted_mode;
+	struct link_config_limits limits;
+	int ret;
+
+	if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)
+		return -EINVAL;
+
+	pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
+	pipe_config->has_pch_encoder = false;
+
+	if (intel_conn_state->force_audio == HDMI_AUDIO_AUTO)
+		pipe_config->has_audio = connector->port->has_audio;
+	else
+		pipe_config->has_audio =
+			intel_conn_state->force_audio == HDMI_AUDIO_ON;
+
+	/*
+	 * for MST we always configure max link bw - the spec doesn't
+	 * seem to suggest we should do otherwise.
+	 */
+	limits.min_rate =
+	limits.max_rate = intel_dp_max_link_rate(intel_dp);
+
+	limits.min_lane_count =
+	limits.max_lane_count = intel_dp_max_lane_count(intel_dp);
+
+	limits.min_bpp = intel_dp_min_bpp(pipe_config->output_format);
+	/*
+	 * FIXME: If all the streams can't fit into the link with
+	 * their current pipe_bpp we should reduce pipe_bpp across
+	 * the board until things start to fit. Until then we
+	 * limit to <= 8bpc since that's what was hardcoded for all
+	 * MST streams previously. This hack should be removed once
+	 * we have the proper retry logic in place.
+	 */
+	limits.max_bpp = min(pipe_config->pipe_bpp, 24);
+
+	intel_dp_adjust_compliance_config(intel_dp, pipe_config, &limits);
+
+	ret = intel_dp_mst_compute_link_config(encoder, pipe_config,
+					       conn_state, &limits);
+	if (ret)
+		return ret;
+
+	ret = intel_dp_mst_update_slots(encoder, pipe_config, conn_state);
+	if (ret)
+		return ret;
+
+	pipe_config->limited_color_range =
+		intel_dp_limited_color_range(pipe_config, conn_state);
+
+	if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
+		pipe_config->lane_lat_optim_mask =
+			bxt_ddi_phy_calc_lane_lat_optim_mask(pipe_config->lane_count);
+
+	intel_ddi_compute_min_voltage_level(dev_priv, pipe_config);
+
+	return 0;
+}
+
+/*
+ * Iterate over all connectors and return a mask of
+ * all CPU transcoders streaming over the same DP link.
+ */
+static unsigned int
+intel_dp_mst_transcoder_mask(struct intel_atomic_state *state,
+			     struct intel_dp *mst_port)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	const struct intel_digital_connector_state *conn_state;
+	struct intel_connector *connector;
+	u8 transcoders = 0;
+	int i;
+
+	if (DISPLAY_VER(dev_priv) < 12)
+		return 0;
+
+	for_each_new_intel_connector_in_state(state, connector, conn_state, i) {
+		const struct intel_crtc_state *crtc_state;
+		struct intel_crtc *crtc;
+
+		if (connector->mst_port != mst_port || !conn_state->base.crtc)
+			continue;
+
+		crtc = to_intel_crtc(conn_state->base.crtc);
+		crtc_state = intel_atomic_get_new_crtc_state(state, crtc);
+
+		if (!crtc_state->hw.active)
+			continue;
+
+		transcoders |= BIT(crtc_state->cpu_transcoder);
+	}
+
+	return transcoders;
+}
+
+static int intel_dp_mst_compute_config_late(struct intel_encoder *encoder,
+					    struct intel_crtc_state *crtc_state,
+					    struct drm_connector_state *conn_state)
+{
+	struct intel_atomic_state *state = to_intel_atomic_state(conn_state->state);
+	struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
+	struct intel_dp *intel_dp = &intel_mst->primary->dp;
+
+	/* lowest numbered transcoder will be designated master */
+	crtc_state->mst_master_transcoder =
+		ffs(intel_dp_mst_transcoder_mask(state, intel_dp)) - 1;
+
+	return 0;
+}
+
+/*
+ * If one of the connectors in a MST stream needs a modeset, mark all CRTCs
+ * that shares the same MST stream as mode changed,
+ * intel_modeset_pipe_config()+intel_crtc_check_fastset() will take care to do
+ * a fastset when possible.
+ */
+static int
+intel_dp_mst_atomic_master_trans_check(struct intel_connector *connector,
+				       struct intel_atomic_state *state)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct drm_connector_list_iter connector_list_iter;
+	struct intel_connector *connector_iter;
+	int ret = 0;
+
+	if (DISPLAY_VER(dev_priv) < 12)
+		return  0;
+
+	if (!intel_connector_needs_modeset(state, &connector->base))
+		return 0;
+
+	drm_connector_list_iter_begin(&dev_priv->drm, &connector_list_iter);
+	for_each_intel_connector_iter(connector_iter, &connector_list_iter) {
+		struct intel_digital_connector_state *conn_iter_state;
+		struct intel_crtc_state *crtc_state;
+		struct intel_crtc *crtc;
+
+		if (connector_iter->mst_port != connector->mst_port ||
+		    connector_iter == connector)
+			continue;
+
+		conn_iter_state = intel_atomic_get_digital_connector_state(state,
+									   connector_iter);
+		if (IS_ERR(conn_iter_state)) {
+			ret = PTR_ERR(conn_iter_state);
+			break;
+		}
+
+		if (!conn_iter_state->base.crtc)
+			continue;
+
+		crtc = to_intel_crtc(conn_iter_state->base.crtc);
+		crtc_state = intel_atomic_get_crtc_state(&state->base, crtc);
+		if (IS_ERR(crtc_state)) {
+			ret = PTR_ERR(crtc_state);
+			break;
+		}
+
+		ret = drm_atomic_add_affected_planes(&state->base, &crtc->base);
+		if (ret)
+			break;
+		crtc_state->uapi.mode_changed = true;
+	}
+	drm_connector_list_iter_end(&connector_list_iter);
+
+	return ret;
+}
+
+static int
+intel_dp_mst_atomic_check(struct drm_connector *connector,
+			  struct drm_atomic_state *_state)
+{
+	struct intel_atomic_state *state = to_intel_atomic_state(_state);
+	struct intel_connector *intel_connector =
+		to_intel_connector(connector);
+	int ret;
+
+	ret = intel_digital_connector_atomic_check(connector, &state->base);
+	if (ret)
+		return ret;
+
+	ret = intel_dp_mst_atomic_master_trans_check(intel_connector, state);
+	if (ret)
+		return ret;
+
+	return drm_dp_atomic_release_time_slots(&state->base,
+						&intel_connector->mst_port->mst_mgr,
+						intel_connector->port);
+}
+
+static void clear_act_sent(struct intel_encoder *encoder,
+			   const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+
+	intel_de_write(i915, dp_tp_status_reg(encoder, crtc_state),
+		       DP_TP_STATUS_ACT_SENT);
+}
+
+static void wait_for_act_sent(struct intel_encoder *encoder,
+			      const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
+	struct intel_dp *intel_dp = &intel_mst->primary->dp;
+
+	if (intel_de_wait_for_set(i915, dp_tp_status_reg(encoder, crtc_state),
+				  DP_TP_STATUS_ACT_SENT, 1))
+		drm_err(&i915->drm, "Timed out waiting for ACT sent\n");
+
+	drm_dp_check_act_status(&intel_dp->mst_mgr);
+}
+
+static void intel_mst_disable_dp(struct intel_atomic_state *state,
+				 struct intel_encoder *encoder,
+				 const struct intel_crtc_state *old_crtc_state,
+				 const struct drm_connector_state *old_conn_state)
+{
+	struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
+	struct intel_digital_port *dig_port = intel_mst->primary;
+	struct intel_dp *intel_dp = &dig_port->dp;
+	struct intel_connector *connector =
+		to_intel_connector(old_conn_state->connector);
+	struct drm_dp_mst_topology_state *old_mst_state =
+		drm_atomic_get_old_mst_topology_state(&state->base, &intel_dp->mst_mgr);
+	struct drm_dp_mst_topology_state *new_mst_state =
+		drm_atomic_get_new_mst_topology_state(&state->base, &intel_dp->mst_mgr);
+	const struct drm_dp_mst_atomic_payload *old_payload =
+		drm_atomic_get_mst_payload_state(old_mst_state, connector->port);
+	struct drm_dp_mst_atomic_payload *new_payload =
+		drm_atomic_get_mst_payload_state(new_mst_state, connector->port);
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+
+	drm_dbg_kms(&i915->drm, "active links %d\n",
+		    intel_dp->active_mst_links);
+
+	intel_hdcp_disable(intel_mst->connector);
+
+	drm_dp_remove_payload(&intel_dp->mst_mgr, new_mst_state,
+			      old_payload, new_payload);
+
+	intel_audio_codec_disable(encoder, old_crtc_state, old_conn_state);
+}
+
+static void intel_mst_post_disable_dp(struct intel_atomic_state *state,
+				      struct intel_encoder *encoder,
+				      const struct intel_crtc_state *old_crtc_state,
+				      const struct drm_connector_state *old_conn_state)
+{
+	struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
+	struct intel_digital_port *dig_port = intel_mst->primary;
+	struct intel_dp *intel_dp = &dig_port->dp;
+	struct intel_connector *connector =
+		to_intel_connector(old_conn_state->connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	bool last_mst_stream;
+
+	intel_dp->active_mst_links--;
+	last_mst_stream = intel_dp->active_mst_links == 0;
+	drm_WARN_ON(&dev_priv->drm,
+		    DISPLAY_VER(dev_priv) >= 12 && last_mst_stream &&
+		    !intel_dp_mst_is_master_trans(old_crtc_state));
+
+	intel_crtc_vblank_off(old_crtc_state);
+
+	intel_disable_transcoder(old_crtc_state);
+
+	clear_act_sent(encoder, old_crtc_state);
+
+	intel_de_rmw(dev_priv, TRANS_DDI_FUNC_CTL(old_crtc_state->cpu_transcoder),
+		     TRANS_DDI_DP_VC_PAYLOAD_ALLOC, 0);
+
+	wait_for_act_sent(encoder, old_crtc_state);
+
+	intel_ddi_disable_transcoder_func(old_crtc_state);
+
+	if (DISPLAY_VER(dev_priv) >= 9)
+		skl_scaler_disable(old_crtc_state);
+	else
+		ilk_pfit_disable(old_crtc_state);
+
+	/*
+	 * Power down mst path before disabling the port, otherwise we end
+	 * up getting interrupts from the sink upon detecting link loss.
+	 */
+	drm_dp_send_power_updown_phy(&intel_dp->mst_mgr, connector->port,
+				     false);
+
+	/*
+	 * BSpec 4287: disable DIP after the transcoder is disabled and before
+	 * the transcoder clock select is set to none.
+	 */
+	if (last_mst_stream)
+		intel_dp_set_infoframes(&dig_port->base, false,
+					old_crtc_state, NULL);
+	/*
+	 * From TGL spec: "If multi-stream slave transcoder: Configure
+	 * Transcoder Clock Select to direct no clock to the transcoder"
+	 *
+	 * From older GENs spec: "Configure Transcoder Clock Select to direct
+	 * no clock to the transcoder"
+	 */
+	if (DISPLAY_VER(dev_priv) < 12 || !last_mst_stream)
+		intel_ddi_disable_pipe_clock(old_crtc_state);
+
+
+	intel_mst->connector = NULL;
+	if (last_mst_stream)
+		dig_port->base.post_disable(state, &dig_port->base,
+						  old_crtc_state, NULL);
+
+	drm_dbg_kms(&dev_priv->drm, "active links %d\n",
+		    intel_dp->active_mst_links);
+}
+
+static void intel_mst_pre_pll_enable_dp(struct intel_atomic_state *state,
+					struct intel_encoder *encoder,
+					const struct intel_crtc_state *pipe_config,
+					const struct drm_connector_state *conn_state)
+{
+	struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
+	struct intel_digital_port *dig_port = intel_mst->primary;
+	struct intel_dp *intel_dp = &dig_port->dp;
+
+	if (intel_dp->active_mst_links == 0)
+		dig_port->base.pre_pll_enable(state, &dig_port->base,
+						    pipe_config, NULL);
+}
+
+static void intel_mst_pre_enable_dp(struct intel_atomic_state *state,
+				    struct intel_encoder *encoder,
+				    const struct intel_crtc_state *pipe_config,
+				    const struct drm_connector_state *conn_state)
+{
+	struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
+	struct intel_digital_port *dig_port = intel_mst->primary;
+	struct intel_dp *intel_dp = &dig_port->dp;
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_connector *connector =
+		to_intel_connector(conn_state->connector);
+	struct drm_dp_mst_topology_state *mst_state =
+		drm_atomic_get_new_mst_topology_state(&state->base, &intel_dp->mst_mgr);
+	int ret;
+	bool first_mst_stream;
+
+	/* MST encoders are bound to a crtc, not to a connector,
+	 * force the mapping here for get_hw_state.
+	 */
+	connector->encoder = encoder;
+	intel_mst->connector = connector;
+	first_mst_stream = intel_dp->active_mst_links == 0;
+	drm_WARN_ON(&dev_priv->drm,
+		    DISPLAY_VER(dev_priv) >= 12 && first_mst_stream &&
+		    !intel_dp_mst_is_master_trans(pipe_config));
+
+	drm_dbg_kms(&dev_priv->drm, "active links %d\n",
+		    intel_dp->active_mst_links);
+
+	if (first_mst_stream)
+		intel_dp_set_power(intel_dp, DP_SET_POWER_D0);
+
+	drm_dp_send_power_updown_phy(&intel_dp->mst_mgr, connector->port, true);
+
+	if (first_mst_stream)
+		dig_port->base.pre_enable(state, &dig_port->base,
+						pipe_config, NULL);
+
+	intel_dp->active_mst_links++;
+
+	ret = drm_dp_add_payload_part1(&intel_dp->mst_mgr, mst_state,
+				       drm_atomic_get_mst_payload_state(mst_state, connector->port));
+	if (ret < 0)
+		drm_err(&dev_priv->drm, "Failed to create MST payload for %s: %d\n",
+			connector->base.name, ret);
+
+	/*
+	 * Before Gen 12 this is not done as part of
+	 * dig_port->base.pre_enable() and should be done here. For
+	 * Gen 12+ the step in which this should be done is different for the
+	 * first MST stream, so it's done on the DDI for the first stream and
+	 * here for the following ones.
+	 */
+	if (DISPLAY_VER(dev_priv) < 12 || !first_mst_stream)
+		intel_ddi_enable_pipe_clock(encoder, pipe_config);
+
+	intel_ddi_set_dp_msa(pipe_config, conn_state);
+}
+
+static void intel_mst_enable_dp(struct intel_atomic_state *state,
+				struct intel_encoder *encoder,
+				const struct intel_crtc_state *pipe_config,
+				const struct drm_connector_state *conn_state)
+{
+	struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
+	struct intel_digital_port *dig_port = intel_mst->primary;
+	struct intel_dp *intel_dp = &dig_port->dp;
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct drm_dp_mst_topology_state *mst_state =
+		drm_atomic_get_new_mst_topology_state(&state->base, &intel_dp->mst_mgr);
+	enum transcoder trans = pipe_config->cpu_transcoder;
+
+	drm_WARN_ON(&dev_priv->drm, pipe_config->has_pch_encoder);
+
+	clear_act_sent(encoder, pipe_config);
+
+	if (intel_dp_is_uhbr(pipe_config)) {
+		const struct drm_display_mode *adjusted_mode =
+			&pipe_config->hw.adjusted_mode;
+		u64 crtc_clock_hz = KHz(adjusted_mode->crtc_clock);
+
+		intel_de_write(dev_priv, TRANS_DP2_VFREQHIGH(pipe_config->cpu_transcoder),
+			       TRANS_DP2_VFREQ_PIXEL_CLOCK(crtc_clock_hz >> 24));
+		intel_de_write(dev_priv, TRANS_DP2_VFREQLOW(pipe_config->cpu_transcoder),
+			       TRANS_DP2_VFREQ_PIXEL_CLOCK(crtc_clock_hz & 0xffffff));
+	}
+
+	intel_ddi_enable_transcoder_func(encoder, pipe_config);
+
+	intel_de_rmw(dev_priv, TRANS_DDI_FUNC_CTL(trans), 0,
+		     TRANS_DDI_DP_VC_PAYLOAD_ALLOC);
+
+	drm_dbg_kms(&dev_priv->drm, "active links %d\n",
+		    intel_dp->active_mst_links);
+
+	wait_for_act_sent(encoder, pipe_config);
+
+	drm_dp_add_payload_part2(&intel_dp->mst_mgr, &state->base,
+				 drm_atomic_get_mst_payload_state(mst_state, connector->port));
+
+	if (DISPLAY_VER(dev_priv) >= 14 && pipe_config->fec_enable)
+		intel_de_rmw(dev_priv, MTL_CHICKEN_TRANS(trans), 0,
+			     FECSTALL_DIS_DPTSTREAM_DPTTG);
+	else if (DISPLAY_VER(dev_priv) >= 12 && pipe_config->fec_enable)
+		intel_de_rmw(dev_priv, CHICKEN_TRANS(trans), 0,
+			     FECSTALL_DIS_DPTSTREAM_DPTTG);
+
+	intel_enable_transcoder(pipe_config);
+
+	intel_crtc_vblank_on(pipe_config);
+
+	intel_audio_codec_enable(encoder, pipe_config, conn_state);
+
+	/* Enable hdcp if it's desired */
+	if (conn_state->content_protection ==
+	    DRM_MODE_CONTENT_PROTECTION_DESIRED)
+		intel_hdcp_enable(to_intel_connector(conn_state->connector),
+				  pipe_config,
+				  (u8)conn_state->hdcp_content_type);
+}
+
+static bool intel_dp_mst_enc_get_hw_state(struct intel_encoder *encoder,
+				      enum pipe *pipe)
+{
+	struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
+	*pipe = intel_mst->pipe;
+	if (intel_mst->connector)
+		return true;
+	return false;
+}
+
+static void intel_dp_mst_enc_get_config(struct intel_encoder *encoder,
+					struct intel_crtc_state *pipe_config)
+{
+	struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
+	struct intel_digital_port *dig_port = intel_mst->primary;
+
+	dig_port->base.get_config(&dig_port->base, pipe_config);
+}
+
+static bool intel_dp_mst_initial_fastset_check(struct intel_encoder *encoder,
+					       struct intel_crtc_state *crtc_state)
+{
+	struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
+	struct intel_digital_port *dig_port = intel_mst->primary;
+
+	return intel_dp_initial_fastset_check(&dig_port->base, crtc_state);
+}
+
+static int intel_dp_mst_get_ddc_modes(struct drm_connector *connector)
+{
+	struct intel_connector *intel_connector = to_intel_connector(connector);
+	struct intel_dp *intel_dp = intel_connector->mst_port;
+	struct edid *edid;
+	int ret;
+
+	if (drm_connector_is_unregistered(connector))
+		return intel_connector_update_modes(connector, NULL);
+
+	edid = drm_dp_mst_get_edid(connector, &intel_dp->mst_mgr, intel_connector->port);
+	ret = intel_connector_update_modes(connector, edid);
+	kfree(edid);
+
+	return ret;
+}
+
+static int
+intel_dp_mst_connector_late_register(struct drm_connector *connector)
+{
+	struct intel_connector *intel_connector = to_intel_connector(connector);
+	int ret;
+
+	ret = drm_dp_mst_connector_late_register(connector,
+						 intel_connector->port);
+	if (ret < 0)
+		return ret;
+
+	ret = intel_connector_register(connector);
+	if (ret < 0)
+		drm_dp_mst_connector_early_unregister(connector,
+						      intel_connector->port);
+
+	return ret;
+}
+
+static void
+intel_dp_mst_connector_early_unregister(struct drm_connector *connector)
+{
+	struct intel_connector *intel_connector = to_intel_connector(connector);
+
+	intel_connector_unregister(connector);
+	drm_dp_mst_connector_early_unregister(connector,
+					      intel_connector->port);
+}
+
+static const struct drm_connector_funcs intel_dp_mst_connector_funcs = {
+	.fill_modes = drm_helper_probe_single_connector_modes,
+	.atomic_get_property = intel_digital_connector_atomic_get_property,
+	.atomic_set_property = intel_digital_connector_atomic_set_property,
+	.late_register = intel_dp_mst_connector_late_register,
+	.early_unregister = intel_dp_mst_connector_early_unregister,
+	.destroy = intel_connector_destroy,
+	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+	.atomic_duplicate_state = intel_digital_connector_duplicate_state,
+};
+
+static int intel_dp_mst_get_modes(struct drm_connector *connector)
+{
+	return intel_dp_mst_get_ddc_modes(connector);
+}
+
+static int
+intel_dp_mst_mode_valid_ctx(struct drm_connector *connector,
+			    struct drm_display_mode *mode,
+			    struct drm_modeset_acquire_ctx *ctx,
+			    enum drm_mode_status *status)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->dev);
+	struct intel_connector *intel_connector = to_intel_connector(connector);
+	struct intel_dp *intel_dp = intel_connector->mst_port;
+	struct drm_dp_mst_topology_mgr *mgr = &intel_dp->mst_mgr;
+	struct drm_dp_mst_port *port = intel_connector->port;
+	const int min_bpp = 18;
+	int max_dotclk = to_i915(connector->dev)->max_dotclk_freq;
+	int max_rate, mode_rate, max_lanes, max_link_clock;
+	int ret;
+
+	if (drm_connector_is_unregistered(connector)) {
+		*status = MODE_ERROR;
+		return 0;
+	}
+
+	*status = intel_cpu_transcoder_mode_valid(dev_priv, mode);
+	if (*status != MODE_OK)
+		return 0;
+
+	if (mode->flags & DRM_MODE_FLAG_DBLSCAN) {
+		*status = MODE_NO_DBLESCAN;
+		return 0;
+	}
+
+	max_link_clock = intel_dp_max_link_rate(intel_dp);
+	max_lanes = intel_dp_max_lane_count(intel_dp);
+
+	max_rate = intel_dp_max_data_rate(max_link_clock, max_lanes);
+	mode_rate = intel_dp_link_required(mode->clock, min_bpp);
+
+	ret = drm_modeset_lock(&mgr->base.lock, ctx);
+	if (ret)
+		return ret;
+
+	if (mode_rate > max_rate || mode->clock > max_dotclk ||
+	    drm_dp_calc_pbn_mode(mode->clock, min_bpp, false) > port->full_pbn) {
+		*status = MODE_CLOCK_HIGH;
+		return 0;
+	}
+
+	if (mode->clock < 10000) {
+		*status = MODE_CLOCK_LOW;
+		return 0;
+	}
+
+	if (mode->flags & DRM_MODE_FLAG_DBLCLK) {
+		*status = MODE_H_ILLEGAL;
+		return 0;
+	}
+
+	*status = intel_mode_valid_max_plane_size(dev_priv, mode, false);
+	return 0;
+}
+
+static struct drm_encoder *intel_mst_atomic_best_encoder(struct drm_connector *connector,
+							 struct drm_atomic_state *state)
+{
+	struct drm_connector_state *connector_state = drm_atomic_get_new_connector_state(state,
+											 connector);
+	struct intel_connector *intel_connector = to_intel_connector(connector);
+	struct intel_dp *intel_dp = intel_connector->mst_port;
+	struct intel_crtc *crtc = to_intel_crtc(connector_state->crtc);
+
+	return &intel_dp->mst_encoders[crtc->pipe]->base.base;
+}
+
+static int
+intel_dp_mst_detect(struct drm_connector *connector,
+		    struct drm_modeset_acquire_ctx *ctx, bool force)
+{
+	struct drm_i915_private *i915 = to_i915(connector->dev);
+	struct intel_connector *intel_connector = to_intel_connector(connector);
+	struct intel_dp *intel_dp = intel_connector->mst_port;
+
+	if (!INTEL_DISPLAY_ENABLED(i915))
+		return connector_status_disconnected;
+
+	if (drm_connector_is_unregistered(connector))
+		return connector_status_disconnected;
+
+	return drm_dp_mst_detect_port(connector, ctx, &intel_dp->mst_mgr,
+				      intel_connector->port);
+}
+
+static const struct drm_connector_helper_funcs intel_dp_mst_connector_helper_funcs = {
+	.get_modes = intel_dp_mst_get_modes,
+	.mode_valid_ctx = intel_dp_mst_mode_valid_ctx,
+	.atomic_best_encoder = intel_mst_atomic_best_encoder,
+	.atomic_check = intel_dp_mst_atomic_check,
+	.detect_ctx = intel_dp_mst_detect,
+};
+
+static void intel_dp_mst_encoder_destroy(struct drm_encoder *encoder)
+{
+	struct intel_dp_mst_encoder *intel_mst = enc_to_mst(to_intel_encoder(encoder));
+
+	drm_encoder_cleanup(encoder);
+	kfree(intel_mst);
+}
+
+static const struct drm_encoder_funcs intel_dp_mst_enc_funcs = {
+	.destroy = intel_dp_mst_encoder_destroy,
+};
+
+static bool intel_dp_mst_get_hw_state(struct intel_connector *connector)
+{
+	if (intel_attached_encoder(connector) && connector->base.state->crtc) {
+		enum pipe pipe;
+		if (!intel_attached_encoder(connector)->get_hw_state(intel_attached_encoder(connector), &pipe))
+			return false;
+		return true;
+	}
+	return false;
+}
+
+static struct drm_connector *intel_dp_add_mst_connector(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port, const char *pathprop)
+{
+	struct intel_dp *intel_dp = container_of(mgr, struct intel_dp, mst_mgr);
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	struct drm_device *dev = dig_port->base.base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_connector *intel_connector;
+	struct drm_connector *connector;
+	enum pipe pipe;
+	int ret;
+
+	intel_connector = intel_connector_alloc();
+	if (!intel_connector)
+		return NULL;
+
+	intel_connector->get_hw_state = intel_dp_mst_get_hw_state;
+	intel_connector->mst_port = intel_dp;
+	intel_connector->port = port;
+	drm_dp_mst_get_port_malloc(port);
+
+	connector = &intel_connector->base;
+	ret = drm_connector_init(dev, connector, &intel_dp_mst_connector_funcs,
+				 DRM_MODE_CONNECTOR_DisplayPort);
+	if (ret) {
+		drm_dp_mst_put_port_malloc(port);
+		intel_connector_free(intel_connector);
+		return NULL;
+	}
+
+	drm_connector_helper_add(connector, &intel_dp_mst_connector_helper_funcs);
+
+	for_each_pipe(dev_priv, pipe) {
+		struct drm_encoder *enc =
+			&intel_dp->mst_encoders[pipe]->base.base;
+
+		ret = drm_connector_attach_encoder(&intel_connector->base, enc);
+		if (ret)
+			goto err;
+	}
+
+	drm_object_attach_property(&connector->base, dev->mode_config.path_property, 0);
+	drm_object_attach_property(&connector->base, dev->mode_config.tile_property, 0);
+
+	ret = drm_connector_set_path_property(connector, pathprop);
+	if (ret)
+		goto err;
+
+	intel_attach_force_audio_property(connector);
+	intel_attach_broadcast_rgb_property(connector);
+
+	ret = intel_dp_hdcp_init(dig_port, intel_connector);
+	if (ret)
+		drm_dbg_kms(&dev_priv->drm, "[%s:%d] HDCP MST init failed, skipping.\n",
+			    connector->name, connector->base.id);
+	/*
+	 * Reuse the prop from the SST connector because we're
+	 * not allowed to create new props after device registration.
+	 */
+	connector->max_bpc_property =
+		intel_dp->attached_connector->base.max_bpc_property;
+	if (connector->max_bpc_property)
+		drm_connector_attach_max_bpc_property(connector, 6, 12);
+
+	return connector;
+
+err:
+	drm_connector_cleanup(connector);
+	return NULL;
+}
+
+static void
+intel_dp_mst_poll_hpd_irq(struct drm_dp_mst_topology_mgr *mgr)
+{
+	struct intel_dp *intel_dp = container_of(mgr, struct intel_dp, mst_mgr);
+
+	intel_hpd_trigger_irq(dp_to_dig_port(intel_dp));
+}
+
+static const struct drm_dp_mst_topology_cbs mst_cbs = {
+	.add_connector = intel_dp_add_mst_connector,
+	.poll_hpd_irq = intel_dp_mst_poll_hpd_irq,
+};
+
+static struct intel_dp_mst_encoder *
+intel_dp_create_fake_mst_encoder(struct intel_digital_port *dig_port, enum pipe pipe)
+{
+	struct intel_dp_mst_encoder *intel_mst;
+	struct intel_encoder *intel_encoder;
+	struct drm_device *dev = dig_port->base.base.dev;
+
+	intel_mst = kzalloc(sizeof(*intel_mst), GFP_KERNEL);
+
+	if (!intel_mst)
+		return NULL;
+
+	intel_mst->pipe = pipe;
+	intel_encoder = &intel_mst->base;
+	intel_mst->primary = dig_port;
+
+	drm_encoder_init(dev, &intel_encoder->base, &intel_dp_mst_enc_funcs,
+			 DRM_MODE_ENCODER_DPMST, "DP-MST %c", pipe_name(pipe));
+
+	intel_encoder->type = INTEL_OUTPUT_DP_MST;
+	intel_encoder->power_domain = dig_port->base.power_domain;
+	intel_encoder->port = dig_port->base.port;
+	intel_encoder->cloneable = 0;
+	/*
+	 * This is wrong, but broken userspace uses the intersection
+	 * of possible_crtcs of all the encoders of a given connector
+	 * to figure out which crtcs can drive said connector. What
+	 * should be used instead is the union of possible_crtcs.
+	 * To keep such userspace functioning we must misconfigure
+	 * this to make sure the intersection is not empty :(
+	 */
+	intel_encoder->pipe_mask = ~0;
+
+	intel_encoder->compute_config = intel_dp_mst_compute_config;
+	intel_encoder->compute_config_late = intel_dp_mst_compute_config_late;
+	intel_encoder->disable = intel_mst_disable_dp;
+	intel_encoder->post_disable = intel_mst_post_disable_dp;
+	intel_encoder->update_pipe = intel_ddi_update_pipe;
+	intel_encoder->pre_pll_enable = intel_mst_pre_pll_enable_dp;
+	intel_encoder->pre_enable = intel_mst_pre_enable_dp;
+	intel_encoder->enable = intel_mst_enable_dp;
+	intel_encoder->get_hw_state = intel_dp_mst_enc_get_hw_state;
+	intel_encoder->get_config = intel_dp_mst_enc_get_config;
+	intel_encoder->initial_fastset_check = intel_dp_mst_initial_fastset_check;
+
+	return intel_mst;
+
+}
+
+static bool
+intel_dp_create_fake_mst_encoders(struct intel_digital_port *dig_port)
+{
+	struct intel_dp *intel_dp = &dig_port->dp;
+	struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
+	enum pipe pipe;
+
+	for_each_pipe(dev_priv, pipe)
+		intel_dp->mst_encoders[pipe] = intel_dp_create_fake_mst_encoder(dig_port, pipe);
+	return true;
+}
+
+int
+intel_dp_mst_encoder_active_links(struct intel_digital_port *dig_port)
+{
+	return dig_port->dp.active_mst_links;
+}
+
+int
+intel_dp_mst_encoder_init(struct intel_digital_port *dig_port, int conn_base_id)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	struct intel_dp *intel_dp = &dig_port->dp;
+	enum port port = dig_port->base.port;
+	int ret;
+
+	if (!HAS_DP_MST(i915) || intel_dp_is_edp(intel_dp))
+		return 0;
+
+	if (DISPLAY_VER(i915) < 12 && port == PORT_A)
+		return 0;
+
+	if (DISPLAY_VER(i915) < 11 && port == PORT_E)
+		return 0;
+
+	intel_dp->mst_mgr.cbs = &mst_cbs;
+
+	/* create encoders */
+	intel_dp_create_fake_mst_encoders(dig_port);
+	ret = drm_dp_mst_topology_mgr_init(&intel_dp->mst_mgr, &i915->drm,
+					   &intel_dp->aux, 16, 3, conn_base_id);
+	if (ret) {
+		intel_dp->mst_mgr.cbs = NULL;
+		return ret;
+	}
+
+	return 0;
+}
+
+bool intel_dp_mst_source_support(struct intel_dp *intel_dp)
+{
+	return intel_dp->mst_mgr.cbs;
+}
+
+void
+intel_dp_mst_encoder_cleanup(struct intel_digital_port *dig_port)
+{
+	struct intel_dp *intel_dp = &dig_port->dp;
+
+	if (!intel_dp_mst_source_support(intel_dp))
+		return;
+
+	drm_dp_mst_topology_mgr_destroy(&intel_dp->mst_mgr);
+	/* encoders will get killed by normal cleanup */
+
+	intel_dp->mst_mgr.cbs = NULL;
+}
+
+bool intel_dp_mst_is_master_trans(const struct intel_crtc_state *crtc_state)
+{
+	return crtc_state->mst_master_transcoder == crtc_state->cpu_transcoder;
+}
+
+bool intel_dp_mst_is_slave_trans(const struct intel_crtc_state *crtc_state)
+{
+	return crtc_state->mst_master_transcoder != INVALID_TRANSCODER &&
+	       crtc_state->mst_master_transcoder != crtc_state->cpu_transcoder;
+}
+
+/**
+ * intel_dp_mst_add_topology_state_for_connector - add MST topology state for a connector
+ * @state: atomic state
+ * @connector: connector to add the state for
+ * @crtc: the CRTC @connector is attached to
+ *
+ * Add the MST topology state for @connector to @state.
+ *
+ * Returns 0 on success, negative error code on failure.
+ */
+static int
+intel_dp_mst_add_topology_state_for_connector(struct intel_atomic_state *state,
+					      struct intel_connector *connector,
+					      struct intel_crtc *crtc)
+{
+	struct drm_dp_mst_topology_state *mst_state;
+
+	if (!connector->mst_port)
+		return 0;
+
+	mst_state = drm_atomic_get_mst_topology_state(&state->base,
+						      &connector->mst_port->mst_mgr);
+	if (IS_ERR(mst_state))
+		return PTR_ERR(mst_state);
+
+	mst_state->pending_crtc_mask |= drm_crtc_mask(&crtc->base);
+
+	return 0;
+}
+
+/**
+ * intel_dp_mst_add_topology_state_for_crtc - add MST topology state for a CRTC
+ * @state: atomic state
+ * @crtc: CRTC to add the state for
+ *
+ * Add the MST topology state for @crtc to @state.
+ *
+ * Returns 0 on success, negative error code on failure.
+ */
+int intel_dp_mst_add_topology_state_for_crtc(struct intel_atomic_state *state,
+					     struct intel_crtc *crtc)
+{
+	struct drm_connector *_connector;
+	struct drm_connector_state *conn_state;
+	int i;
+
+	for_each_new_connector_in_state(&state->base, _connector, conn_state, i) {
+		struct intel_connector *connector = to_intel_connector(_connector);
+		int ret;
+
+		if (conn_state->crtc != &crtc->base)
+			continue;
+
+		ret = intel_dp_mst_add_topology_state_for_connector(state, connector, crtc);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.h b/drivers/gpu/drm/i915/display/intel_dp_mst.h
new file mode 100644
index 000000000..f1815bb72
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.h
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_DP_MST_H__
+#define __INTEL_DP_MST_H__
+
+#include <linux/types.h>
+
+struct intel_atomic_state;
+struct intel_crtc;
+struct intel_crtc_state;
+struct intel_digital_port;
+struct intel_dp;
+
+int intel_dp_mst_encoder_init(struct intel_digital_port *dig_port, int conn_id);
+void intel_dp_mst_encoder_cleanup(struct intel_digital_port *dig_port);
+int intel_dp_mst_encoder_active_links(struct intel_digital_port *dig_port);
+bool intel_dp_mst_is_master_trans(const struct intel_crtc_state *crtc_state);
+bool intel_dp_mst_is_slave_trans(const struct intel_crtc_state *crtc_state);
+bool intel_dp_mst_source_support(struct intel_dp *intel_dp);
+int intel_dp_mst_add_topology_state_for_crtc(struct intel_atomic_state *state,
+					     struct intel_crtc *crtc);
+
+#endif /* __INTEL_DP_MST_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_dpio_phy.c b/drivers/gpu/drm/i915/display/intel_dpio_phy.c
new file mode 100644
index 000000000..8732b8722
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dpio_phy.c
@@ -0,0 +1,1106 @@
+/*
+ * Copyright © 2014-2016 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include "intel_ddi.h"
+#include "intel_ddi_buf_trans.h"
+#include "intel_de.h"
+#include "intel_display_power_well.h"
+#include "intel_display_types.h"
+#include "intel_dp.h"
+#include "intel_dpio_phy.h"
+#include "vlv_sideband.h"
+
+/**
+ * DOC: DPIO
+ *
+ * VLV, CHV and BXT have slightly peculiar display PHYs for driving DP/HDMI
+ * ports. DPIO is the name given to such a display PHY. These PHYs
+ * don't follow the standard programming model using direct MMIO
+ * registers, and instead their registers must be accessed trough IOSF
+ * sideband. VLV has one such PHY for driving ports B and C, and CHV
+ * adds another PHY for driving port D. Each PHY responds to specific
+ * IOSF-SB port.
+ *
+ * Each display PHY is made up of one or two channels. Each channel
+ * houses a common lane part which contains the PLL and other common
+ * logic. CH0 common lane also contains the IOSF-SB logic for the
+ * Common Register Interface (CRI) ie. the DPIO registers. CRI clock
+ * must be running when any DPIO registers are accessed.
+ *
+ * In addition to having their own registers, the PHYs are also
+ * controlled through some dedicated signals from the display
+ * controller. These include PLL reference clock enable, PLL enable,
+ * and CRI clock selection, for example.
+ *
+ * Eeach channel also has two splines (also called data lanes), and
+ * each spline is made up of one Physical Access Coding Sub-Layer
+ * (PCS) block and two TX lanes. So each channel has two PCS blocks
+ * and four TX lanes. The TX lanes are used as DP lanes or TMDS
+ * data/clock pairs depending on the output type.
+ *
+ * Additionally the PHY also contains an AUX lane with AUX blocks
+ * for each channel. This is used for DP AUX communication, but
+ * this fact isn't really relevant for the driver since AUX is
+ * controlled from the display controller side. No DPIO registers
+ * need to be accessed during AUX communication,
+ *
+ * Generally on VLV/CHV the common lane corresponds to the pipe and
+ * the spline (PCS/TX) corresponds to the port.
+ *
+ * For dual channel PHY (VLV/CHV):
+ *
+ *  pipe A == CMN/PLL/REF CH0
+ *
+ *  pipe B == CMN/PLL/REF CH1
+ *
+ *  port B == PCS/TX CH0
+ *
+ *  port C == PCS/TX CH1
+ *
+ * This is especially important when we cross the streams
+ * ie. drive port B with pipe B, or port C with pipe A.
+ *
+ * For single channel PHY (CHV):
+ *
+ *  pipe C == CMN/PLL/REF CH0
+ *
+ *  port D == PCS/TX CH0
+ *
+ * On BXT the entire PHY channel corresponds to the port. That means
+ * the PLL is also now associated with the port rather than the pipe,
+ * and so the clock needs to be routed to the appropriate transcoder.
+ * Port A PLL is directly connected to transcoder EDP and port B/C
+ * PLLs can be routed to any transcoder A/B/C.
+ *
+ * Note: DDI0 is digital port B, DD1 is digital port C, and DDI2 is
+ * digital port D (CHV) or port A (BXT). ::
+ *
+ *
+ *     Dual channel PHY (VLV/CHV/BXT)
+ *     ---------------------------------
+ *     |      CH0      |      CH1      |
+ *     |  CMN/PLL/REF  |  CMN/PLL/REF  |
+ *     |---------------|---------------| Display PHY
+ *     | PCS01 | PCS23 | PCS01 | PCS23 |
+ *     |-------|-------|-------|-------|
+ *     |TX0|TX1|TX2|TX3|TX0|TX1|TX2|TX3|
+ *     ---------------------------------
+ *     |     DDI0      |     DDI1      | DP/HDMI ports
+ *     ---------------------------------
+ *
+ *     Single channel PHY (CHV/BXT)
+ *     -----------------
+ *     |      CH0      |
+ *     |  CMN/PLL/REF  |
+ *     |---------------| Display PHY
+ *     | PCS01 | PCS23 |
+ *     |-------|-------|
+ *     |TX0|TX1|TX2|TX3|
+ *     -----------------
+ *     |     DDI2      | DP/HDMI port
+ *     -----------------
+ */
+
+/**
+ * struct bxt_ddi_phy_info - Hold info for a broxton DDI phy
+ */
+struct bxt_ddi_phy_info {
+	/**
+	 * @dual_channel: true if this phy has a second channel.
+	 */
+	bool dual_channel;
+
+	/**
+	 * @rcomp_phy: If -1, indicates this phy has its own rcomp resistor.
+	 * Otherwise the GRC value will be copied from the phy indicated by
+	 * this field.
+	 */
+	enum dpio_phy rcomp_phy;
+
+	/**
+	 * @reset_delay: delay in us to wait before setting the common reset
+	 * bit in BXT_PHY_CTL_FAMILY, which effectively enables the phy.
+	 */
+	int reset_delay;
+
+	/**
+	 * @pwron_mask: Mask with the appropriate bit set that would cause the
+	 * punit to power this phy if written to BXT_P_CR_GT_DISP_PWRON.
+	 */
+	u32 pwron_mask;
+
+	/**
+	 * @channel: struct containing per channel information.
+	 */
+	struct {
+		/**
+		 * @channel.port: which port maps to this channel.
+		 */
+		enum port port;
+	} channel[2];
+};
+
+static const struct bxt_ddi_phy_info bxt_ddi_phy_info[] = {
+	[DPIO_PHY0] = {
+		.dual_channel = true,
+		.rcomp_phy = DPIO_PHY1,
+		.pwron_mask = BIT(0),
+
+		.channel = {
+			[DPIO_CH0] = { .port = PORT_B },
+			[DPIO_CH1] = { .port = PORT_C },
+		}
+	},
+	[DPIO_PHY1] = {
+		.dual_channel = false,
+		.rcomp_phy = -1,
+		.pwron_mask = BIT(1),
+
+		.channel = {
+			[DPIO_CH0] = { .port = PORT_A },
+		}
+	},
+};
+
+static const struct bxt_ddi_phy_info glk_ddi_phy_info[] = {
+	[DPIO_PHY0] = {
+		.dual_channel = false,
+		.rcomp_phy = DPIO_PHY1,
+		.pwron_mask = BIT(0),
+		.reset_delay = 20,
+
+		.channel = {
+			[DPIO_CH0] = { .port = PORT_B },
+		}
+	},
+	[DPIO_PHY1] = {
+		.dual_channel = false,
+		.rcomp_phy = -1,
+		.pwron_mask = BIT(3),
+		.reset_delay = 20,
+
+		.channel = {
+			[DPIO_CH0] = { .port = PORT_A },
+		}
+	},
+	[DPIO_PHY2] = {
+		.dual_channel = false,
+		.rcomp_phy = DPIO_PHY1,
+		.pwron_mask = BIT(1),
+		.reset_delay = 20,
+
+		.channel = {
+			[DPIO_CH0] = { .port = PORT_C },
+		}
+	},
+};
+
+static const struct bxt_ddi_phy_info *
+bxt_get_phy_list(struct drm_i915_private *dev_priv, int *count)
+{
+	if (IS_GEMINILAKE(dev_priv)) {
+		*count =  ARRAY_SIZE(glk_ddi_phy_info);
+		return glk_ddi_phy_info;
+	} else {
+		*count =  ARRAY_SIZE(bxt_ddi_phy_info);
+		return bxt_ddi_phy_info;
+	}
+}
+
+static const struct bxt_ddi_phy_info *
+bxt_get_phy_info(struct drm_i915_private *dev_priv, enum dpio_phy phy)
+{
+	int count;
+	const struct bxt_ddi_phy_info *phy_list =
+		bxt_get_phy_list(dev_priv, &count);
+
+	return &phy_list[phy];
+}
+
+void bxt_port_to_phy_channel(struct drm_i915_private *dev_priv, enum port port,
+			     enum dpio_phy *phy, enum dpio_channel *ch)
+{
+	const struct bxt_ddi_phy_info *phy_info, *phys;
+	int i, count;
+
+	phys = bxt_get_phy_list(dev_priv, &count);
+
+	for (i = 0; i < count; i++) {
+		phy_info = &phys[i];
+
+		if (port == phy_info->channel[DPIO_CH0].port) {
+			*phy = i;
+			*ch = DPIO_CH0;
+			return;
+		}
+
+		if (phy_info->dual_channel &&
+		    port == phy_info->channel[DPIO_CH1].port) {
+			*phy = i;
+			*ch = DPIO_CH1;
+			return;
+		}
+	}
+
+	drm_WARN(&dev_priv->drm, 1, "PHY not found for PORT %c",
+		 port_name(port));
+	*phy = DPIO_PHY0;
+	*ch = DPIO_CH0;
+}
+
+void bxt_ddi_phy_set_signal_levels(struct intel_encoder *encoder,
+				   const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	int level = intel_ddi_level(encoder, crtc_state, 0);
+	const struct intel_ddi_buf_trans *trans;
+	enum dpio_channel ch;
+	enum dpio_phy phy;
+	int n_entries;
+	u32 val;
+
+	trans = encoder->get_buf_trans(encoder, crtc_state, &n_entries);
+	if (drm_WARN_ON_ONCE(&dev_priv->drm, !trans))
+		return;
+
+	bxt_port_to_phy_channel(dev_priv, encoder->port, &phy, &ch);
+
+	/*
+	 * While we write to the group register to program all lanes at once we
+	 * can read only lane registers and we pick lanes 0/1 for that.
+	 */
+	val = intel_de_read(dev_priv, BXT_PORT_PCS_DW10_LN01(phy, ch));
+	val &= ~(TX2_SWING_CALC_INIT | TX1_SWING_CALC_INIT);
+	intel_de_write(dev_priv, BXT_PORT_PCS_DW10_GRP(phy, ch), val);
+
+	val = intel_de_read(dev_priv, BXT_PORT_TX_DW2_LN0(phy, ch));
+	val &= ~(MARGIN_000 | UNIQ_TRANS_SCALE);
+	val |= trans->entries[level].bxt.margin << MARGIN_000_SHIFT |
+		trans->entries[level].bxt.scale << UNIQ_TRANS_SCALE_SHIFT;
+	intel_de_write(dev_priv, BXT_PORT_TX_DW2_GRP(phy, ch), val);
+
+	val = intel_de_read(dev_priv, BXT_PORT_TX_DW3_LN0(phy, ch));
+	val &= ~SCALE_DCOMP_METHOD;
+	if (trans->entries[level].bxt.enable)
+		val |= SCALE_DCOMP_METHOD;
+
+	if ((val & UNIQUE_TRANGE_EN_METHOD) && !(val & SCALE_DCOMP_METHOD))
+		drm_err(&dev_priv->drm,
+			"Disabled scaling while ouniqetrangenmethod was set");
+
+	intel_de_write(dev_priv, BXT_PORT_TX_DW3_GRP(phy, ch), val);
+
+	val = intel_de_read(dev_priv, BXT_PORT_TX_DW4_LN0(phy, ch));
+	val &= ~DE_EMPHASIS;
+	val |= trans->entries[level].bxt.deemphasis << DEEMPH_SHIFT;
+	intel_de_write(dev_priv, BXT_PORT_TX_DW4_GRP(phy, ch), val);
+
+	val = intel_de_read(dev_priv, BXT_PORT_PCS_DW10_LN01(phy, ch));
+	val |= TX2_SWING_CALC_INIT | TX1_SWING_CALC_INIT;
+	intel_de_write(dev_priv, BXT_PORT_PCS_DW10_GRP(phy, ch), val);
+}
+
+bool bxt_ddi_phy_is_enabled(struct drm_i915_private *dev_priv,
+			    enum dpio_phy phy)
+{
+	const struct bxt_ddi_phy_info *phy_info;
+
+	phy_info = bxt_get_phy_info(dev_priv, phy);
+
+	if (!(intel_de_read(dev_priv, BXT_P_CR_GT_DISP_PWRON) & phy_info->pwron_mask))
+		return false;
+
+	if ((intel_de_read(dev_priv, BXT_PORT_CL1CM_DW0(phy)) &
+	     (PHY_POWER_GOOD | PHY_RESERVED)) != PHY_POWER_GOOD) {
+		drm_dbg(&dev_priv->drm,
+			"DDI PHY %d powered, but power hasn't settled\n", phy);
+
+		return false;
+	}
+
+	if (!(intel_de_read(dev_priv, BXT_PHY_CTL_FAMILY(phy)) & COMMON_RESET_DIS)) {
+		drm_dbg(&dev_priv->drm,
+			"DDI PHY %d powered, but still in reset\n", phy);
+
+		return false;
+	}
+
+	return true;
+}
+
+static u32 bxt_get_grc(struct drm_i915_private *dev_priv, enum dpio_phy phy)
+{
+	u32 val = intel_de_read(dev_priv, BXT_PORT_REF_DW6(phy));
+
+	return (val & GRC_CODE_MASK) >> GRC_CODE_SHIFT;
+}
+
+static void bxt_phy_wait_grc_done(struct drm_i915_private *dev_priv,
+				  enum dpio_phy phy)
+{
+	if (intel_de_wait_for_set(dev_priv, BXT_PORT_REF_DW3(phy),
+				  GRC_DONE, 10))
+		drm_err(&dev_priv->drm, "timeout waiting for PHY%d GRC\n",
+			phy);
+}
+
+static void _bxt_ddi_phy_init(struct drm_i915_private *dev_priv,
+			      enum dpio_phy phy)
+{
+	const struct bxt_ddi_phy_info *phy_info;
+	u32 val;
+
+	phy_info = bxt_get_phy_info(dev_priv, phy);
+
+	if (bxt_ddi_phy_is_enabled(dev_priv, phy)) {
+		/* Still read out the GRC value for state verification */
+		if (phy_info->rcomp_phy != -1)
+			dev_priv->bxt_phy_grc = bxt_get_grc(dev_priv, phy);
+
+		if (bxt_ddi_phy_verify_state(dev_priv, phy)) {
+			drm_dbg(&dev_priv->drm, "DDI PHY %d already enabled, "
+				"won't reprogram it\n", phy);
+			return;
+		}
+
+		drm_dbg(&dev_priv->drm,
+			"DDI PHY %d enabled with invalid state, "
+			"force reprogramming it\n", phy);
+	}
+
+	val = intel_de_read(dev_priv, BXT_P_CR_GT_DISP_PWRON);
+	val |= phy_info->pwron_mask;
+	intel_de_write(dev_priv, BXT_P_CR_GT_DISP_PWRON, val);
+
+	/*
+	 * The PHY registers start out inaccessible and respond to reads with
+	 * all 1s.  Eventually they become accessible as they power up, then
+	 * the reserved bit will give the default 0.  Poll on the reserved bit
+	 * becoming 0 to find when the PHY is accessible.
+	 * The flag should get set in 100us according to the HW team, but
+	 * use 1ms due to occasional timeouts observed with that.
+	 */
+	if (intel_wait_for_register_fw(&dev_priv->uncore,
+				       BXT_PORT_CL1CM_DW0(phy),
+				       PHY_RESERVED | PHY_POWER_GOOD,
+				       PHY_POWER_GOOD,
+				       1))
+		drm_err(&dev_priv->drm, "timeout during PHY%d power on\n",
+			phy);
+
+	/* Program PLL Rcomp code offset */
+	val = intel_de_read(dev_priv, BXT_PORT_CL1CM_DW9(phy));
+	val &= ~IREF0RC_OFFSET_MASK;
+	val |= 0xE4 << IREF0RC_OFFSET_SHIFT;
+	intel_de_write(dev_priv, BXT_PORT_CL1CM_DW9(phy), val);
+
+	val = intel_de_read(dev_priv, BXT_PORT_CL1CM_DW10(phy));
+	val &= ~IREF1RC_OFFSET_MASK;
+	val |= 0xE4 << IREF1RC_OFFSET_SHIFT;
+	intel_de_write(dev_priv, BXT_PORT_CL1CM_DW10(phy), val);
+
+	/* Program power gating */
+	val = intel_de_read(dev_priv, BXT_PORT_CL1CM_DW28(phy));
+	val |= OCL1_POWER_DOWN_EN | DW28_OLDO_DYN_PWR_DOWN_EN |
+		SUS_CLK_CONFIG;
+	intel_de_write(dev_priv, BXT_PORT_CL1CM_DW28(phy), val);
+
+	if (phy_info->dual_channel) {
+		val = intel_de_read(dev_priv, BXT_PORT_CL2CM_DW6(phy));
+		val |= DW6_OLDO_DYN_PWR_DOWN_EN;
+		intel_de_write(dev_priv, BXT_PORT_CL2CM_DW6(phy), val);
+	}
+
+	if (phy_info->rcomp_phy != -1) {
+		u32 grc_code;
+
+		bxt_phy_wait_grc_done(dev_priv, phy_info->rcomp_phy);
+
+		/*
+		 * PHY0 isn't connected to an RCOMP resistor so copy over
+		 * the corresponding calibrated value from PHY1, and disable
+		 * the automatic calibration on PHY0.
+		 */
+		val = dev_priv->bxt_phy_grc = bxt_get_grc(dev_priv,
+							  phy_info->rcomp_phy);
+		grc_code = val << GRC_CODE_FAST_SHIFT |
+			   val << GRC_CODE_SLOW_SHIFT |
+			   val;
+		intel_de_write(dev_priv, BXT_PORT_REF_DW6(phy), grc_code);
+
+		val = intel_de_read(dev_priv, BXT_PORT_REF_DW8(phy));
+		val |= GRC_DIS | GRC_RDY_OVRD;
+		intel_de_write(dev_priv, BXT_PORT_REF_DW8(phy), val);
+	}
+
+	if (phy_info->reset_delay)
+		udelay(phy_info->reset_delay);
+
+	val = intel_de_read(dev_priv, BXT_PHY_CTL_FAMILY(phy));
+	val |= COMMON_RESET_DIS;
+	intel_de_write(dev_priv, BXT_PHY_CTL_FAMILY(phy), val);
+}
+
+void bxt_ddi_phy_uninit(struct drm_i915_private *dev_priv, enum dpio_phy phy)
+{
+	const struct bxt_ddi_phy_info *phy_info;
+	u32 val;
+
+	phy_info = bxt_get_phy_info(dev_priv, phy);
+
+	val = intel_de_read(dev_priv, BXT_PHY_CTL_FAMILY(phy));
+	val &= ~COMMON_RESET_DIS;
+	intel_de_write(dev_priv, BXT_PHY_CTL_FAMILY(phy), val);
+
+	val = intel_de_read(dev_priv, BXT_P_CR_GT_DISP_PWRON);
+	val &= ~phy_info->pwron_mask;
+	intel_de_write(dev_priv, BXT_P_CR_GT_DISP_PWRON, val);
+}
+
+void bxt_ddi_phy_init(struct drm_i915_private *dev_priv, enum dpio_phy phy)
+{
+	const struct bxt_ddi_phy_info *phy_info =
+		bxt_get_phy_info(dev_priv, phy);
+	enum dpio_phy rcomp_phy = phy_info->rcomp_phy;
+	bool was_enabled;
+
+	lockdep_assert_held(&dev_priv->display.power.domains.lock);
+
+	was_enabled = true;
+	if (rcomp_phy != -1)
+		was_enabled = bxt_ddi_phy_is_enabled(dev_priv, rcomp_phy);
+
+	/*
+	 * We need to copy the GRC calibration value from rcomp_phy,
+	 * so make sure it's powered up.
+	 */
+	if (!was_enabled)
+		_bxt_ddi_phy_init(dev_priv, rcomp_phy);
+
+	_bxt_ddi_phy_init(dev_priv, phy);
+
+	if (!was_enabled)
+		bxt_ddi_phy_uninit(dev_priv, rcomp_phy);
+}
+
+static bool __printf(6, 7)
+__phy_reg_verify_state(struct drm_i915_private *dev_priv, enum dpio_phy phy,
+		       i915_reg_t reg, u32 mask, u32 expected,
+		       const char *reg_fmt, ...)
+{
+	struct va_format vaf;
+	va_list args;
+	u32 val;
+
+	val = intel_de_read(dev_priv, reg);
+	if ((val & mask) == expected)
+		return true;
+
+	va_start(args, reg_fmt);
+	vaf.fmt = reg_fmt;
+	vaf.va = &args;
+
+	drm_dbg(&dev_priv->drm, "DDI PHY %d reg %pV [%08x] state mismatch: "
+			 "current %08x, expected %08x (mask %08x)\n",
+			 phy, &vaf, reg.reg, val, (val & ~mask) | expected,
+			 mask);
+
+	va_end(args);
+
+	return false;
+}
+
+bool bxt_ddi_phy_verify_state(struct drm_i915_private *dev_priv,
+			      enum dpio_phy phy)
+{
+	const struct bxt_ddi_phy_info *phy_info;
+	u32 mask;
+	bool ok;
+
+	phy_info = bxt_get_phy_info(dev_priv, phy);
+
+#define _CHK(reg, mask, exp, fmt, ...)					\
+	__phy_reg_verify_state(dev_priv, phy, reg, mask, exp, fmt,	\
+			       ## __VA_ARGS__)
+
+	if (!bxt_ddi_phy_is_enabled(dev_priv, phy))
+		return false;
+
+	ok = true;
+
+	/* PLL Rcomp code offset */
+	ok &= _CHK(BXT_PORT_CL1CM_DW9(phy),
+		    IREF0RC_OFFSET_MASK, 0xe4 << IREF0RC_OFFSET_SHIFT,
+		    "BXT_PORT_CL1CM_DW9(%d)", phy);
+	ok &= _CHK(BXT_PORT_CL1CM_DW10(phy),
+		    IREF1RC_OFFSET_MASK, 0xe4 << IREF1RC_OFFSET_SHIFT,
+		    "BXT_PORT_CL1CM_DW10(%d)", phy);
+
+	/* Power gating */
+	mask = OCL1_POWER_DOWN_EN | DW28_OLDO_DYN_PWR_DOWN_EN | SUS_CLK_CONFIG;
+	ok &= _CHK(BXT_PORT_CL1CM_DW28(phy), mask, mask,
+		    "BXT_PORT_CL1CM_DW28(%d)", phy);
+
+	if (phy_info->dual_channel)
+		ok &= _CHK(BXT_PORT_CL2CM_DW6(phy),
+			   DW6_OLDO_DYN_PWR_DOWN_EN, DW6_OLDO_DYN_PWR_DOWN_EN,
+			   "BXT_PORT_CL2CM_DW6(%d)", phy);
+
+	if (phy_info->rcomp_phy != -1) {
+		u32 grc_code = dev_priv->bxt_phy_grc;
+
+		grc_code = grc_code << GRC_CODE_FAST_SHIFT |
+			   grc_code << GRC_CODE_SLOW_SHIFT |
+			   grc_code;
+		mask = GRC_CODE_FAST_MASK | GRC_CODE_SLOW_MASK |
+		       GRC_CODE_NOM_MASK;
+		ok &= _CHK(BXT_PORT_REF_DW6(phy), mask, grc_code,
+			   "BXT_PORT_REF_DW6(%d)", phy);
+
+		mask = GRC_DIS | GRC_RDY_OVRD;
+		ok &= _CHK(BXT_PORT_REF_DW8(phy), mask, mask,
+			    "BXT_PORT_REF_DW8(%d)", phy);
+	}
+
+	return ok;
+#undef _CHK
+}
+
+u8
+bxt_ddi_phy_calc_lane_lat_optim_mask(u8 lane_count)
+{
+	switch (lane_count) {
+	case 1:
+		return 0;
+	case 2:
+		return BIT(2) | BIT(0);
+	case 4:
+		return BIT(3) | BIT(2) | BIT(0);
+	default:
+		MISSING_CASE(lane_count);
+
+		return 0;
+	}
+}
+
+void bxt_ddi_phy_set_lane_optim_mask(struct intel_encoder *encoder,
+				     u8 lane_lat_optim_mask)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	enum port port = encoder->port;
+	enum dpio_phy phy;
+	enum dpio_channel ch;
+	int lane;
+
+	bxt_port_to_phy_channel(dev_priv, port, &phy, &ch);
+
+	for (lane = 0; lane < 4; lane++) {
+		u32 val = intel_de_read(dev_priv,
+					BXT_PORT_TX_DW14_LN(phy, ch, lane));
+
+		/*
+		 * Note that on CHV this flag is called UPAR, but has
+		 * the same function.
+		 */
+		val &= ~LATENCY_OPTIM;
+		if (lane_lat_optim_mask & BIT(lane))
+			val |= LATENCY_OPTIM;
+
+		intel_de_write(dev_priv, BXT_PORT_TX_DW14_LN(phy, ch, lane),
+			       val);
+	}
+}
+
+u8
+bxt_ddi_phy_get_lane_lat_optim_mask(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	enum port port = encoder->port;
+	enum dpio_phy phy;
+	enum dpio_channel ch;
+	int lane;
+	u8 mask;
+
+	bxt_port_to_phy_channel(dev_priv, port, &phy, &ch);
+
+	mask = 0;
+	for (lane = 0; lane < 4; lane++) {
+		u32 val = intel_de_read(dev_priv,
+					BXT_PORT_TX_DW14_LN(phy, ch, lane));
+
+		if (val & LATENCY_OPTIM)
+			mask |= BIT(lane);
+	}
+
+	return mask;
+}
+
+void chv_set_phy_signal_level(struct intel_encoder *encoder,
+			      const struct intel_crtc_state *crtc_state,
+			      u32 deemph_reg_value, u32 margin_reg_value,
+			      bool uniq_trans_scale)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	enum dpio_channel ch = vlv_dig_port_to_channel(dig_port);
+	enum pipe pipe = crtc->pipe;
+	u32 val;
+	int i;
+
+	vlv_dpio_get(dev_priv);
+
+	/* Clear calc init */
+	val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch));
+	val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3);
+	val &= ~(DPIO_PCS_TX1DEEMP_MASK | DPIO_PCS_TX2DEEMP_MASK);
+	val |= DPIO_PCS_TX1DEEMP_9P5 | DPIO_PCS_TX2DEEMP_9P5;
+	vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val);
+
+	if (crtc_state->lane_count > 2) {
+		val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch));
+		val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3);
+		val &= ~(DPIO_PCS_TX1DEEMP_MASK | DPIO_PCS_TX2DEEMP_MASK);
+		val |= DPIO_PCS_TX1DEEMP_9P5 | DPIO_PCS_TX2DEEMP_9P5;
+		vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val);
+	}
+
+	val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW9(ch));
+	val &= ~(DPIO_PCS_TX1MARGIN_MASK | DPIO_PCS_TX2MARGIN_MASK);
+	val |= DPIO_PCS_TX1MARGIN_000 | DPIO_PCS_TX2MARGIN_000;
+	vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW9(ch), val);
+
+	if (crtc_state->lane_count > 2) {
+		val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW9(ch));
+		val &= ~(DPIO_PCS_TX1MARGIN_MASK | DPIO_PCS_TX2MARGIN_MASK);
+		val |= DPIO_PCS_TX1MARGIN_000 | DPIO_PCS_TX2MARGIN_000;
+		vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW9(ch), val);
+	}
+
+	/* Program swing deemph */
+	for (i = 0; i < crtc_state->lane_count; i++) {
+		val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW4(ch, i));
+		val &= ~DPIO_SWING_DEEMPH9P5_MASK;
+		val |= deemph_reg_value << DPIO_SWING_DEEMPH9P5_SHIFT;
+		vlv_dpio_write(dev_priv, pipe, CHV_TX_DW4(ch, i), val);
+	}
+
+	/* Program swing margin */
+	for (i = 0; i < crtc_state->lane_count; i++) {
+		val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i));
+
+		val &= ~DPIO_SWING_MARGIN000_MASK;
+		val |= margin_reg_value << DPIO_SWING_MARGIN000_SHIFT;
+
+		/*
+		 * Supposedly this value shouldn't matter when unique transition
+		 * scale is disabled, but in fact it does matter. Let's just
+		 * always program the same value and hope it's OK.
+		 */
+		val &= ~(0xff << DPIO_UNIQ_TRANS_SCALE_SHIFT);
+		val |= 0x9a << DPIO_UNIQ_TRANS_SCALE_SHIFT;
+
+		vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val);
+	}
+
+	/*
+	 * The document said it needs to set bit 27 for ch0 and bit 26
+	 * for ch1. Might be a typo in the doc.
+	 * For now, for this unique transition scale selection, set bit
+	 * 27 for ch0 and ch1.
+	 */
+	for (i = 0; i < crtc_state->lane_count; i++) {
+		val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i));
+		if (uniq_trans_scale)
+			val |= DPIO_TX_UNIQ_TRANS_SCALE_EN;
+		else
+			val &= ~DPIO_TX_UNIQ_TRANS_SCALE_EN;
+		vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val);
+	}
+
+	/* Start swing calculation */
+	val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch));
+	val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3;
+	vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val);
+
+	if (crtc_state->lane_count > 2) {
+		val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch));
+		val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3;
+		vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val);
+	}
+
+	vlv_dpio_put(dev_priv);
+}
+
+void chv_data_lane_soft_reset(struct intel_encoder *encoder,
+			      const struct intel_crtc_state *crtc_state,
+			      bool reset)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	enum dpio_channel ch = vlv_dig_port_to_channel(enc_to_dig_port(encoder));
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	enum pipe pipe = crtc->pipe;
+	u32 val;
+
+	val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch));
+	if (reset)
+		val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET);
+	else
+		val |= DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET;
+	vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val);
+
+	if (crtc_state->lane_count > 2) {
+		val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch));
+		if (reset)
+			val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET);
+		else
+			val |= DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET;
+		vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val);
+	}
+
+	val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch));
+	val |= CHV_PCS_REQ_SOFTRESET_EN;
+	if (reset)
+		val &= ~DPIO_PCS_CLK_SOFT_RESET;
+	else
+		val |= DPIO_PCS_CLK_SOFT_RESET;
+	vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val);
+
+	if (crtc_state->lane_count > 2) {
+		val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch));
+		val |= CHV_PCS_REQ_SOFTRESET_EN;
+		if (reset)
+			val &= ~DPIO_PCS_CLK_SOFT_RESET;
+		else
+			val |= DPIO_PCS_CLK_SOFT_RESET;
+		vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val);
+	}
+}
+
+void chv_phy_pre_pll_enable(struct intel_encoder *encoder,
+			    const struct intel_crtc_state *crtc_state)
+{
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	enum dpio_channel ch = vlv_dig_port_to_channel(dig_port);
+	enum pipe pipe = crtc->pipe;
+	unsigned int lane_mask =
+		intel_dp_unused_lane_mask(crtc_state->lane_count);
+	u32 val;
+
+	/*
+	 * Must trick the second common lane into life.
+	 * Otherwise we can't even access the PLL.
+	 */
+	if (ch == DPIO_CH0 && pipe == PIPE_B)
+		dig_port->release_cl2_override =
+			!chv_phy_powergate_ch(dev_priv, DPIO_PHY0, DPIO_CH1, true);
+
+	chv_phy_powergate_lanes(encoder, true, lane_mask);
+
+	vlv_dpio_get(dev_priv);
+
+	/* Assert data lane reset */
+	chv_data_lane_soft_reset(encoder, crtc_state, true);
+
+	/* program left/right clock distribution */
+	if (pipe != PIPE_B) {
+		val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0);
+		val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK);
+		if (ch == DPIO_CH0)
+			val |= CHV_BUFLEFTENA1_FORCE;
+		if (ch == DPIO_CH1)
+			val |= CHV_BUFRIGHTENA1_FORCE;
+		vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val);
+	} else {
+		val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1);
+		val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK);
+		if (ch == DPIO_CH0)
+			val |= CHV_BUFLEFTENA2_FORCE;
+		if (ch == DPIO_CH1)
+			val |= CHV_BUFRIGHTENA2_FORCE;
+		vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val);
+	}
+
+	/* program clock channel usage */
+	val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(ch));
+	val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE;
+	if (pipe != PIPE_B)
+		val &= ~CHV_PCS_USEDCLKCHANNEL;
+	else
+		val |= CHV_PCS_USEDCLKCHANNEL;
+	vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW8(ch), val);
+
+	if (crtc_state->lane_count > 2) {
+		val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW8(ch));
+		val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE;
+		if (pipe != PIPE_B)
+			val &= ~CHV_PCS_USEDCLKCHANNEL;
+		else
+			val |= CHV_PCS_USEDCLKCHANNEL;
+		vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW8(ch), val);
+	}
+
+	/*
+	 * This a a bit weird since generally CL
+	 * matches the pipe, but here we need to
+	 * pick the CL based on the port.
+	 */
+	val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW19(ch));
+	if (pipe != PIPE_B)
+		val &= ~CHV_CMN_USEDCLKCHANNEL;
+	else
+		val |= CHV_CMN_USEDCLKCHANNEL;
+	vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW19(ch), val);
+
+	vlv_dpio_put(dev_priv);
+}
+
+void chv_phy_pre_encoder_enable(struct intel_encoder *encoder,
+				const struct intel_crtc_state *crtc_state)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	enum dpio_channel ch = vlv_dig_port_to_channel(dig_port);
+	enum pipe pipe = crtc->pipe;
+	int data, i, stagger;
+	u32 val;
+
+	vlv_dpio_get(dev_priv);
+
+	/* allow hardware to manage TX FIFO reset source */
+	val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW11(ch));
+	val &= ~DPIO_LANEDESKEW_STRAP_OVRD;
+	vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW11(ch), val);
+
+	if (crtc_state->lane_count > 2) {
+		val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW11(ch));
+		val &= ~DPIO_LANEDESKEW_STRAP_OVRD;
+		vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW11(ch), val);
+	}
+
+	/* Program Tx lane latency optimal setting*/
+	for (i = 0; i < crtc_state->lane_count; i++) {
+		/* Set the upar bit */
+		if (crtc_state->lane_count == 1)
+			data = 0x0;
+		else
+			data = (i == 1) ? 0x0 : 0x1;
+		vlv_dpio_write(dev_priv, pipe, CHV_TX_DW14(ch, i),
+				data << DPIO_UPAR_SHIFT);
+	}
+
+	/* Data lane stagger programming */
+	if (crtc_state->port_clock > 270000)
+		stagger = 0x18;
+	else if (crtc_state->port_clock > 135000)
+		stagger = 0xd;
+	else if (crtc_state->port_clock > 67500)
+		stagger = 0x7;
+	else if (crtc_state->port_clock > 33750)
+		stagger = 0x4;
+	else
+		stagger = 0x2;
+
+	val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW11(ch));
+	val |= DPIO_TX2_STAGGER_MASK(0x1f);
+	vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW11(ch), val);
+
+	if (crtc_state->lane_count > 2) {
+		val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW11(ch));
+		val |= DPIO_TX2_STAGGER_MASK(0x1f);
+		vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW11(ch), val);
+	}
+
+	vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW12(ch),
+		       DPIO_LANESTAGGER_STRAP(stagger) |
+		       DPIO_LANESTAGGER_STRAP_OVRD |
+		       DPIO_TX1_STAGGER_MASK(0x1f) |
+		       DPIO_TX1_STAGGER_MULT(6) |
+		       DPIO_TX2_STAGGER_MULT(0));
+
+	if (crtc_state->lane_count > 2) {
+		vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW12(ch),
+			       DPIO_LANESTAGGER_STRAP(stagger) |
+			       DPIO_LANESTAGGER_STRAP_OVRD |
+			       DPIO_TX1_STAGGER_MASK(0x1f) |
+			       DPIO_TX1_STAGGER_MULT(7) |
+			       DPIO_TX2_STAGGER_MULT(5));
+	}
+
+	/* Deassert data lane reset */
+	chv_data_lane_soft_reset(encoder, crtc_state, false);
+
+	vlv_dpio_put(dev_priv);
+}
+
+void chv_phy_release_cl2_override(struct intel_encoder *encoder)
+{
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+
+	if (dig_port->release_cl2_override) {
+		chv_phy_powergate_ch(dev_priv, DPIO_PHY0, DPIO_CH1, false);
+		dig_port->release_cl2_override = false;
+	}
+}
+
+void chv_phy_post_pll_disable(struct intel_encoder *encoder,
+			      const struct intel_crtc_state *old_crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	enum pipe pipe = to_intel_crtc(old_crtc_state->uapi.crtc)->pipe;
+	u32 val;
+
+	vlv_dpio_get(dev_priv);
+
+	/* disable left/right clock distribution */
+	if (pipe != PIPE_B) {
+		val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0);
+		val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK);
+		vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val);
+	} else {
+		val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1);
+		val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK);
+		vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val);
+	}
+
+	vlv_dpio_put(dev_priv);
+
+	/*
+	 * Leave the power down bit cleared for at least one
+	 * lane so that chv_powergate_phy_ch() will power
+	 * on something when the channel is otherwise unused.
+	 * When the port is off and the override is removed
+	 * the lanes power down anyway, so otherwise it doesn't
+	 * really matter what the state of power down bits is
+	 * after this.
+	 */
+	chv_phy_powergate_lanes(encoder, false, 0x0);
+}
+
+void vlv_set_phy_signal_level(struct intel_encoder *encoder,
+			      const struct intel_crtc_state *crtc_state,
+			      u32 demph_reg_value, u32 preemph_reg_value,
+			      u32 uniqtranscale_reg_value, u32 tx3_demph)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	enum dpio_channel port = vlv_dig_port_to_channel(dig_port);
+	enum pipe pipe = crtc->pipe;
+
+	vlv_dpio_get(dev_priv);
+
+	vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0x00000000);
+	vlv_dpio_write(dev_priv, pipe, VLV_TX_DW4(port), demph_reg_value);
+	vlv_dpio_write(dev_priv, pipe, VLV_TX_DW2(port),
+			 uniqtranscale_reg_value);
+	vlv_dpio_write(dev_priv, pipe, VLV_TX_DW3(port), 0x0C782040);
+
+	if (tx3_demph)
+		vlv_dpio_write(dev_priv, pipe, VLV_TX3_DW4(port), tx3_demph);
+
+	vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW11(port), 0x00030000);
+	vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW9(port), preemph_reg_value);
+	vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), DPIO_TX_OCALINIT_EN);
+
+	vlv_dpio_put(dev_priv);
+}
+
+void vlv_phy_pre_pll_enable(struct intel_encoder *encoder,
+			    const struct intel_crtc_state *crtc_state)
+{
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	enum dpio_channel port = vlv_dig_port_to_channel(dig_port);
+	enum pipe pipe = crtc->pipe;
+
+	/* Program Tx lane resets to default */
+	vlv_dpio_get(dev_priv);
+
+	vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW0(port),
+			 DPIO_PCS_TX_LANE2_RESET |
+			 DPIO_PCS_TX_LANE1_RESET);
+	vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW1(port),
+			 DPIO_PCS_CLK_CRI_RXEB_EIOS_EN |
+			 DPIO_PCS_CLK_CRI_RXDIGFILTSG_EN |
+			 (1<<DPIO_PCS_CLK_DATAWIDTH_SHIFT) |
+				 DPIO_PCS_CLK_SOFT_RESET);
+
+	/* Fix up inter-pair skew failure */
+	vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW12(port), 0x00750f00);
+	vlv_dpio_write(dev_priv, pipe, VLV_TX_DW11(port), 0x00001500);
+	vlv_dpio_write(dev_priv, pipe, VLV_TX_DW14(port), 0x40400000);
+
+	vlv_dpio_put(dev_priv);
+}
+
+void vlv_phy_pre_encoder_enable(struct intel_encoder *encoder,
+				const struct intel_crtc_state *crtc_state)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	enum dpio_channel port = vlv_dig_port_to_channel(dig_port);
+	enum pipe pipe = crtc->pipe;
+	u32 val;
+
+	vlv_dpio_get(dev_priv);
+
+	/* Enable clock channels for this port */
+	val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(port));
+	val = 0;
+	if (pipe)
+		val |= (1<<21);
+	else
+		val &= ~(1<<21);
+	val |= 0x001000c4;
+	vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW8(port), val);
+
+	/* Program lane clock */
+	vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW14(port), 0x00760018);
+	vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW23(port), 0x00400888);
+
+	vlv_dpio_put(dev_priv);
+}
+
+void vlv_phy_reset_lanes(struct intel_encoder *encoder,
+			 const struct intel_crtc_state *old_crtc_state)
+{
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
+	enum dpio_channel port = vlv_dig_port_to_channel(dig_port);
+	enum pipe pipe = crtc->pipe;
+
+	vlv_dpio_get(dev_priv);
+	vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW0(port), 0x00000000);
+	vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW1(port), 0x00e00060);
+	vlv_dpio_put(dev_priv);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_dpio_phy.h b/drivers/gpu/drm/i915/display/intel_dpio_phy.h
new file mode 100644
index 000000000..9c3d008e8
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dpio_phy.h
@@ -0,0 +1,59 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_DPIO_PHY_H__
+#define __INTEL_DPIO_PHY_H__
+
+#include <linux/types.h>
+
+enum dpio_channel;
+enum dpio_phy;
+enum port;
+struct drm_i915_private;
+struct intel_crtc_state;
+struct intel_encoder;
+
+void bxt_port_to_phy_channel(struct drm_i915_private *dev_priv, enum port port,
+			     enum dpio_phy *phy, enum dpio_channel *ch);
+void bxt_ddi_phy_set_signal_levels(struct intel_encoder *encoder,
+				   const struct intel_crtc_state *crtc_state);
+void bxt_ddi_phy_init(struct drm_i915_private *dev_priv, enum dpio_phy phy);
+void bxt_ddi_phy_uninit(struct drm_i915_private *dev_priv, enum dpio_phy phy);
+bool bxt_ddi_phy_is_enabled(struct drm_i915_private *dev_priv,
+			    enum dpio_phy phy);
+bool bxt_ddi_phy_verify_state(struct drm_i915_private *dev_priv,
+			      enum dpio_phy phy);
+u8 bxt_ddi_phy_calc_lane_lat_optim_mask(u8 lane_count);
+void bxt_ddi_phy_set_lane_optim_mask(struct intel_encoder *encoder,
+				     u8 lane_lat_optim_mask);
+u8 bxt_ddi_phy_get_lane_lat_optim_mask(struct intel_encoder *encoder);
+
+void chv_set_phy_signal_level(struct intel_encoder *encoder,
+			      const struct intel_crtc_state *crtc_state,
+			      u32 deemph_reg_value, u32 margin_reg_value,
+			      bool uniq_trans_scale);
+void chv_data_lane_soft_reset(struct intel_encoder *encoder,
+			      const struct intel_crtc_state *crtc_state,
+			      bool reset);
+void chv_phy_pre_pll_enable(struct intel_encoder *encoder,
+			    const struct intel_crtc_state *crtc_state);
+void chv_phy_pre_encoder_enable(struct intel_encoder *encoder,
+				const struct intel_crtc_state *crtc_state);
+void chv_phy_release_cl2_override(struct intel_encoder *encoder);
+void chv_phy_post_pll_disable(struct intel_encoder *encoder,
+			      const struct intel_crtc_state *old_crtc_state);
+
+void vlv_set_phy_signal_level(struct intel_encoder *encoder,
+			      const struct intel_crtc_state *crtc_state,
+			      u32 demph_reg_value, u32 preemph_reg_value,
+			      u32 uniqtranscale_reg_value, u32 tx3_demph);
+void vlv_phy_pre_pll_enable(struct intel_encoder *encoder,
+			    const struct intel_crtc_state *crtc_state);
+void vlv_phy_pre_encoder_enable(struct intel_encoder *encoder,
+				const struct intel_crtc_state *crtc_state);
+void vlv_phy_reset_lanes(struct intel_encoder *encoder,
+			 const struct intel_crtc_state *old_crtc_state);
+
+#endif /* __INTEL_DPIO_PHY_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_dpll.c b/drivers/gpu/drm/i915/display/intel_dpll.c
new file mode 100644
index 000000000..b15ba78d6
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dpll.c
@@ -0,0 +1,2061 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#include <linux/kernel.h>
+#include <linux/string_helpers.h>
+
+#include "intel_crtc.h"
+#include "intel_de.h"
+#include "intel_display.h"
+#include "intel_display_types.h"
+#include "intel_dpll.h"
+#include "intel_lvds.h"
+#include "intel_panel.h"
+#include "intel_pps.h"
+#include "intel_snps_phy.h"
+#include "vlv_sideband.h"
+
+struct intel_dpll_funcs {
+	int (*crtc_compute_clock)(struct intel_atomic_state *state,
+				  struct intel_crtc *crtc);
+	int (*crtc_get_shared_dpll)(struct intel_atomic_state *state,
+				    struct intel_crtc *crtc);
+};
+
+struct intel_limit {
+	struct {
+		int min, max;
+	} dot, vco, n, m, m1, m2, p, p1;
+
+	struct {
+		int dot_limit;
+		int p2_slow, p2_fast;
+	} p2;
+};
+static const struct intel_limit intel_limits_i8xx_dac = {
+	.dot = { .min = 25000, .max = 350000 },
+	.vco = { .min = 908000, .max = 1512000 },
+	.n = { .min = 2, .max = 16 },
+	.m = { .min = 96, .max = 140 },
+	.m1 = { .min = 18, .max = 26 },
+	.m2 = { .min = 6, .max = 16 },
+	.p = { .min = 4, .max = 128 },
+	.p1 = { .min = 2, .max = 33 },
+	.p2 = { .dot_limit = 165000,
+		.p2_slow = 4, .p2_fast = 2 },
+};
+
+static const struct intel_limit intel_limits_i8xx_dvo = {
+	.dot = { .min = 25000, .max = 350000 },
+	.vco = { .min = 908000, .max = 1512000 },
+	.n = { .min = 2, .max = 16 },
+	.m = { .min = 96, .max = 140 },
+	.m1 = { .min = 18, .max = 26 },
+	.m2 = { .min = 6, .max = 16 },
+	.p = { .min = 4, .max = 128 },
+	.p1 = { .min = 2, .max = 33 },
+	.p2 = { .dot_limit = 165000,
+		.p2_slow = 4, .p2_fast = 4 },
+};
+
+static const struct intel_limit intel_limits_i8xx_lvds = {
+	.dot = { .min = 25000, .max = 350000 },
+	.vco = { .min = 908000, .max = 1512000 },
+	.n = { .min = 2, .max = 16 },
+	.m = { .min = 96, .max = 140 },
+	.m1 = { .min = 18, .max = 26 },
+	.m2 = { .min = 6, .max = 16 },
+	.p = { .min = 4, .max = 128 },
+	.p1 = { .min = 1, .max = 6 },
+	.p2 = { .dot_limit = 165000,
+		.p2_slow = 14, .p2_fast = 7 },
+};
+
+static const struct intel_limit intel_limits_i9xx_sdvo = {
+	.dot = { .min = 20000, .max = 400000 },
+	.vco = { .min = 1400000, .max = 2800000 },
+	.n = { .min = 1, .max = 6 },
+	.m = { .min = 70, .max = 120 },
+	.m1 = { .min = 8, .max = 18 },
+	.m2 = { .min = 3, .max = 7 },
+	.p = { .min = 5, .max = 80 },
+	.p1 = { .min = 1, .max = 8 },
+	.p2 = { .dot_limit = 200000,
+		.p2_slow = 10, .p2_fast = 5 },
+};
+
+static const struct intel_limit intel_limits_i9xx_lvds = {
+	.dot = { .min = 20000, .max = 400000 },
+	.vco = { .min = 1400000, .max = 2800000 },
+	.n = { .min = 1, .max = 6 },
+	.m = { .min = 70, .max = 120 },
+	.m1 = { .min = 8, .max = 18 },
+	.m2 = { .min = 3, .max = 7 },
+	.p = { .min = 7, .max = 98 },
+	.p1 = { .min = 1, .max = 8 },
+	.p2 = { .dot_limit = 112000,
+		.p2_slow = 14, .p2_fast = 7 },
+};
+
+
+static const struct intel_limit intel_limits_g4x_sdvo = {
+	.dot = { .min = 25000, .max = 270000 },
+	.vco = { .min = 1750000, .max = 3500000},
+	.n = { .min = 1, .max = 4 },
+	.m = { .min = 104, .max = 138 },
+	.m1 = { .min = 17, .max = 23 },
+	.m2 = { .min = 5, .max = 11 },
+	.p = { .min = 10, .max = 30 },
+	.p1 = { .min = 1, .max = 3},
+	.p2 = { .dot_limit = 270000,
+		.p2_slow = 10,
+		.p2_fast = 10
+	},
+};
+
+static const struct intel_limit intel_limits_g4x_hdmi = {
+	.dot = { .min = 22000, .max = 400000 },
+	.vco = { .min = 1750000, .max = 3500000},
+	.n = { .min = 1, .max = 4 },
+	.m = { .min = 104, .max = 138 },
+	.m1 = { .min = 16, .max = 23 },
+	.m2 = { .min = 5, .max = 11 },
+	.p = { .min = 5, .max = 80 },
+	.p1 = { .min = 1, .max = 8},
+	.p2 = { .dot_limit = 165000,
+		.p2_slow = 10, .p2_fast = 5 },
+};
+
+static const struct intel_limit intel_limits_g4x_single_channel_lvds = {
+	.dot = { .min = 20000, .max = 115000 },
+	.vco = { .min = 1750000, .max = 3500000 },
+	.n = { .min = 1, .max = 3 },
+	.m = { .min = 104, .max = 138 },
+	.m1 = { .min = 17, .max = 23 },
+	.m2 = { .min = 5, .max = 11 },
+	.p = { .min = 28, .max = 112 },
+	.p1 = { .min = 2, .max = 8 },
+	.p2 = { .dot_limit = 0,
+		.p2_slow = 14, .p2_fast = 14
+	},
+};
+
+static const struct intel_limit intel_limits_g4x_dual_channel_lvds = {
+	.dot = { .min = 80000, .max = 224000 },
+	.vco = { .min = 1750000, .max = 3500000 },
+	.n = { .min = 1, .max = 3 },
+	.m = { .min = 104, .max = 138 },
+	.m1 = { .min = 17, .max = 23 },
+	.m2 = { .min = 5, .max = 11 },
+	.p = { .min = 14, .max = 42 },
+	.p1 = { .min = 2, .max = 6 },
+	.p2 = { .dot_limit = 0,
+		.p2_slow = 7, .p2_fast = 7
+	},
+};
+
+static const struct intel_limit pnv_limits_sdvo = {
+	.dot = { .min = 20000, .max = 400000},
+	.vco = { .min = 1700000, .max = 3500000 },
+	/* Pineview's Ncounter is a ring counter */
+	.n = { .min = 3, .max = 6 },
+	.m = { .min = 2, .max = 256 },
+	/* Pineview only has one combined m divider, which we treat as m2. */
+	.m1 = { .min = 0, .max = 0 },
+	.m2 = { .min = 0, .max = 254 },
+	.p = { .min = 5, .max = 80 },
+	.p1 = { .min = 1, .max = 8 },
+	.p2 = { .dot_limit = 200000,
+		.p2_slow = 10, .p2_fast = 5 },
+};
+
+static const struct intel_limit pnv_limits_lvds = {
+	.dot = { .min = 20000, .max = 400000 },
+	.vco = { .min = 1700000, .max = 3500000 },
+	.n = { .min = 3, .max = 6 },
+	.m = { .min = 2, .max = 256 },
+	.m1 = { .min = 0, .max = 0 },
+	.m2 = { .min = 0, .max = 254 },
+	.p = { .min = 7, .max = 112 },
+	.p1 = { .min = 1, .max = 8 },
+	.p2 = { .dot_limit = 112000,
+		.p2_slow = 14, .p2_fast = 14 },
+};
+
+/* Ironlake / Sandybridge
+ *
+ * We calculate clock using (register_value + 2) for N/M1/M2, so here
+ * the range value for them is (actual_value - 2).
+ */
+static const struct intel_limit ilk_limits_dac = {
+	.dot = { .min = 25000, .max = 350000 },
+	.vco = { .min = 1760000, .max = 3510000 },
+	.n = { .min = 1, .max = 5 },
+	.m = { .min = 79, .max = 127 },
+	.m1 = { .min = 12, .max = 22 },
+	.m2 = { .min = 5, .max = 9 },
+	.p = { .min = 5, .max = 80 },
+	.p1 = { .min = 1, .max = 8 },
+	.p2 = { .dot_limit = 225000,
+		.p2_slow = 10, .p2_fast = 5 },
+};
+
+static const struct intel_limit ilk_limits_single_lvds = {
+	.dot = { .min = 25000, .max = 350000 },
+	.vco = { .min = 1760000, .max = 3510000 },
+	.n = { .min = 1, .max = 3 },
+	.m = { .min = 79, .max = 118 },
+	.m1 = { .min = 12, .max = 22 },
+	.m2 = { .min = 5, .max = 9 },
+	.p = { .min = 28, .max = 112 },
+	.p1 = { .min = 2, .max = 8 },
+	.p2 = { .dot_limit = 225000,
+		.p2_slow = 14, .p2_fast = 14 },
+};
+
+static const struct intel_limit ilk_limits_dual_lvds = {
+	.dot = { .min = 25000, .max = 350000 },
+	.vco = { .min = 1760000, .max = 3510000 },
+	.n = { .min = 1, .max = 3 },
+	.m = { .min = 79, .max = 127 },
+	.m1 = { .min = 12, .max = 22 },
+	.m2 = { .min = 5, .max = 9 },
+	.p = { .min = 14, .max = 56 },
+	.p1 = { .min = 2, .max = 8 },
+	.p2 = { .dot_limit = 225000,
+		.p2_slow = 7, .p2_fast = 7 },
+};
+
+/* LVDS 100mhz refclk limits. */
+static const struct intel_limit ilk_limits_single_lvds_100m = {
+	.dot = { .min = 25000, .max = 350000 },
+	.vco = { .min = 1760000, .max = 3510000 },
+	.n = { .min = 1, .max = 2 },
+	.m = { .min = 79, .max = 126 },
+	.m1 = { .min = 12, .max = 22 },
+	.m2 = { .min = 5, .max = 9 },
+	.p = { .min = 28, .max = 112 },
+	.p1 = { .min = 2, .max = 8 },
+	.p2 = { .dot_limit = 225000,
+		.p2_slow = 14, .p2_fast = 14 },
+};
+
+static const struct intel_limit ilk_limits_dual_lvds_100m = {
+	.dot = { .min = 25000, .max = 350000 },
+	.vco = { .min = 1760000, .max = 3510000 },
+	.n = { .min = 1, .max = 3 },
+	.m = { .min = 79, .max = 126 },
+	.m1 = { .min = 12, .max = 22 },
+	.m2 = { .min = 5, .max = 9 },
+	.p = { .min = 14, .max = 42 },
+	.p1 = { .min = 2, .max = 6 },
+	.p2 = { .dot_limit = 225000,
+		.p2_slow = 7, .p2_fast = 7 },
+};
+
+static const struct intel_limit intel_limits_vlv = {
+	 /*
+	  * These are based on the data rate limits (measured in fast clocks)
+	  * since those are the strictest limits we have. The fast
+	  * clock and actual rate limits are more relaxed, so checking
+	  * them would make no difference.
+	  */
+	.dot = { .min = 25000, .max = 270000 },
+	.vco = { .min = 4000000, .max = 6000000 },
+	.n = { .min = 1, .max = 7 },
+	.m1 = { .min = 2, .max = 3 },
+	.m2 = { .min = 11, .max = 156 },
+	.p1 = { .min = 2, .max = 3 },
+	.p2 = { .p2_slow = 2, .p2_fast = 20 }, /* slow=min, fast=max */
+};
+
+static const struct intel_limit intel_limits_chv = {
+	/*
+	 * These are based on the data rate limits (measured in fast clocks)
+	 * since those are the strictest limits we have.  The fast
+	 * clock and actual rate limits are more relaxed, so checking
+	 * them would make no difference.
+	 */
+	.dot = { .min = 25000, .max = 540000 },
+	.vco = { .min = 4800000, .max = 6480000 },
+	.n = { .min = 1, .max = 1 },
+	.m1 = { .min = 2, .max = 2 },
+	.m2 = { .min = 24 << 22, .max = 175 << 22 },
+	.p1 = { .min = 2, .max = 4 },
+	.p2 = {	.p2_slow = 1, .p2_fast = 14 },
+};
+
+static const struct intel_limit intel_limits_bxt = {
+	.dot = { .min = 25000, .max = 594000 },
+	.vco = { .min = 4800000, .max = 6700000 },
+	.n = { .min = 1, .max = 1 },
+	.m1 = { .min = 2, .max = 2 },
+	/* FIXME: find real m2 limits */
+	.m2 = { .min = 2 << 22, .max = 255 << 22 },
+	.p1 = { .min = 2, .max = 4 },
+	.p2 = { .p2_slow = 1, .p2_fast = 20 },
+};
+
+/*
+ * Platform specific helpers to calculate the port PLL loopback- (clock.m),
+ * and post-divider (clock.p) values, pre- (clock.vco) and post-divided fast
+ * (clock.dot) clock rates. This fast dot clock is fed to the port's IO logic.
+ * The helpers' return value is the rate of the clock that is fed to the
+ * display engine's pipe which can be the above fast dot clock rate or a
+ * divided-down version of it.
+ */
+/* m1 is reserved as 0 in Pineview, n is a ring counter */
+int pnv_calc_dpll_params(int refclk, struct dpll *clock)
+{
+	clock->m = clock->m2 + 2;
+	clock->p = clock->p1 * clock->p2;
+	if (WARN_ON(clock->n == 0 || clock->p == 0))
+		return 0;
+	clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
+	clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
+
+	return clock->dot;
+}
+
+static u32 i9xx_dpll_compute_m(const struct dpll *dpll)
+{
+	return 5 * (dpll->m1 + 2) + (dpll->m2 + 2);
+}
+
+int i9xx_calc_dpll_params(int refclk, struct dpll *clock)
+{
+	clock->m = i9xx_dpll_compute_m(clock);
+	clock->p = clock->p1 * clock->p2;
+	if (WARN_ON(clock->n + 2 == 0 || clock->p == 0))
+		return 0;
+	clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n + 2);
+	clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
+
+	return clock->dot;
+}
+
+int vlv_calc_dpll_params(int refclk, struct dpll *clock)
+{
+	clock->m = clock->m1 * clock->m2;
+	clock->p = clock->p1 * clock->p2 * 5;
+	if (WARN_ON(clock->n == 0 || clock->p == 0))
+		return 0;
+	clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
+	clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
+
+	return clock->dot;
+}
+
+int chv_calc_dpll_params(int refclk, struct dpll *clock)
+{
+	clock->m = clock->m1 * clock->m2;
+	clock->p = clock->p1 * clock->p2 * 5;
+	if (WARN_ON(clock->n == 0 || clock->p == 0))
+		return 0;
+	clock->vco = DIV_ROUND_CLOSEST_ULL(mul_u32_u32(refclk, clock->m),
+					   clock->n << 22);
+	clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
+
+	return clock->dot;
+}
+
+/*
+ * Returns whether the given set of divisors are valid for a given refclk with
+ * the given connectors.
+ */
+static bool intel_pll_is_valid(struct drm_i915_private *dev_priv,
+			       const struct intel_limit *limit,
+			       const struct dpll *clock)
+{
+	if (clock->n < limit->n.min || limit->n.max < clock->n)
+		return false;
+	if (clock->p1 < limit->p1.min || limit->p1.max < clock->p1)
+		return false;
+	if (clock->m2 < limit->m2.min || limit->m2.max < clock->m2)
+		return false;
+	if (clock->m1 < limit->m1.min || limit->m1.max < clock->m1)
+		return false;
+
+	if (!IS_PINEVIEW(dev_priv) && !IS_LP(dev_priv))
+		if (clock->m1 <= clock->m2)
+			return false;
+
+	if (!IS_LP(dev_priv)) {
+		if (clock->p < limit->p.min || limit->p.max < clock->p)
+			return false;
+		if (clock->m < limit->m.min || limit->m.max < clock->m)
+			return false;
+	}
+
+	if (clock->vco < limit->vco.min || limit->vco.max < clock->vco)
+		return false;
+	/* XXX: We may need to be checking "Dot clock" depending on the multiplier,
+	 * connector, etc., rather than just a single range.
+	 */
+	if (clock->dot < limit->dot.min || limit->dot.max < clock->dot)
+		return false;
+
+	return true;
+}
+
+static int
+i9xx_select_p2_div(const struct intel_limit *limit,
+		   const struct intel_crtc_state *crtc_state,
+		   int target)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
+		/*
+		 * For LVDS just rely on its current settings for dual-channel.
+		 * We haven't figured out how to reliably set up different
+		 * single/dual channel state, if we even can.
+		 */
+		if (intel_is_dual_link_lvds(dev_priv))
+			return limit->p2.p2_fast;
+		else
+			return limit->p2.p2_slow;
+	} else {
+		if (target < limit->p2.dot_limit)
+			return limit->p2.p2_slow;
+		else
+			return limit->p2.p2_fast;
+	}
+}
+
+/*
+ * Returns a set of divisors for the desired target clock with the given
+ * refclk, or FALSE.
+ *
+ * Target and reference clocks are specified in kHz.
+ *
+ * If match_clock is provided, then best_clock P divider must match the P
+ * divider from @match_clock used for LVDS downclocking.
+ */
+static bool
+i9xx_find_best_dpll(const struct intel_limit *limit,
+		    struct intel_crtc_state *crtc_state,
+		    int target, int refclk,
+		    const struct dpll *match_clock,
+		    struct dpll *best_clock)
+{
+	struct drm_device *dev = crtc_state->uapi.crtc->dev;
+	struct dpll clock;
+	int err = target;
+
+	memset(best_clock, 0, sizeof(*best_clock));
+
+	clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
+
+	for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
+	     clock.m1++) {
+		for (clock.m2 = limit->m2.min;
+		     clock.m2 <= limit->m2.max; clock.m2++) {
+			if (clock.m2 >= clock.m1)
+				break;
+			for (clock.n = limit->n.min;
+			     clock.n <= limit->n.max; clock.n++) {
+				for (clock.p1 = limit->p1.min;
+					clock.p1 <= limit->p1.max; clock.p1++) {
+					int this_err;
+
+					i9xx_calc_dpll_params(refclk, &clock);
+					if (!intel_pll_is_valid(to_i915(dev),
+								limit,
+								&clock))
+						continue;
+					if (match_clock &&
+					    clock.p != match_clock->p)
+						continue;
+
+					this_err = abs(clock.dot - target);
+					if (this_err < err) {
+						*best_clock = clock;
+						err = this_err;
+					}
+				}
+			}
+		}
+	}
+
+	return (err != target);
+}
+
+/*
+ * Returns a set of divisors for the desired target clock with the given
+ * refclk, or FALSE.
+ *
+ * Target and reference clocks are specified in kHz.
+ *
+ * If match_clock is provided, then best_clock P divider must match the P
+ * divider from @match_clock used for LVDS downclocking.
+ */
+static bool
+pnv_find_best_dpll(const struct intel_limit *limit,
+		   struct intel_crtc_state *crtc_state,
+		   int target, int refclk,
+		   const struct dpll *match_clock,
+		   struct dpll *best_clock)
+{
+	struct drm_device *dev = crtc_state->uapi.crtc->dev;
+	struct dpll clock;
+	int err = target;
+
+	memset(best_clock, 0, sizeof(*best_clock));
+
+	clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
+
+	for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
+	     clock.m1++) {
+		for (clock.m2 = limit->m2.min;
+		     clock.m2 <= limit->m2.max; clock.m2++) {
+			for (clock.n = limit->n.min;
+			     clock.n <= limit->n.max; clock.n++) {
+				for (clock.p1 = limit->p1.min;
+					clock.p1 <= limit->p1.max; clock.p1++) {
+					int this_err;
+
+					pnv_calc_dpll_params(refclk, &clock);
+					if (!intel_pll_is_valid(to_i915(dev),
+								limit,
+								&clock))
+						continue;
+					if (match_clock &&
+					    clock.p != match_clock->p)
+						continue;
+
+					this_err = abs(clock.dot - target);
+					if (this_err < err) {
+						*best_clock = clock;
+						err = this_err;
+					}
+				}
+			}
+		}
+	}
+
+	return (err != target);
+}
+
+/*
+ * Returns a set of divisors for the desired target clock with the given
+ * refclk, or FALSE.
+ *
+ * Target and reference clocks are specified in kHz.
+ *
+ * If match_clock is provided, then best_clock P divider must match the P
+ * divider from @match_clock used for LVDS downclocking.
+ */
+static bool
+g4x_find_best_dpll(const struct intel_limit *limit,
+		   struct intel_crtc_state *crtc_state,
+		   int target, int refclk,
+		   const struct dpll *match_clock,
+		   struct dpll *best_clock)
+{
+	struct drm_device *dev = crtc_state->uapi.crtc->dev;
+	struct dpll clock;
+	int max_n;
+	bool found = false;
+	/* approximately equals target * 0.00585 */
+	int err_most = (target >> 8) + (target >> 9);
+
+	memset(best_clock, 0, sizeof(*best_clock));
+
+	clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
+
+	max_n = limit->n.max;
+	/* based on hardware requirement, prefer smaller n to precision */
+	for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
+		/* based on hardware requirement, prefere larger m1,m2 */
+		for (clock.m1 = limit->m1.max;
+		     clock.m1 >= limit->m1.min; clock.m1--) {
+			for (clock.m2 = limit->m2.max;
+			     clock.m2 >= limit->m2.min; clock.m2--) {
+				for (clock.p1 = limit->p1.max;
+				     clock.p1 >= limit->p1.min; clock.p1--) {
+					int this_err;
+
+					i9xx_calc_dpll_params(refclk, &clock);
+					if (!intel_pll_is_valid(to_i915(dev),
+								limit,
+								&clock))
+						continue;
+
+					this_err = abs(clock.dot - target);
+					if (this_err < err_most) {
+						*best_clock = clock;
+						err_most = this_err;
+						max_n = clock.n;
+						found = true;
+					}
+				}
+			}
+		}
+	}
+	return found;
+}
+
+/*
+ * Check if the calculated PLL configuration is more optimal compared to the
+ * best configuration and error found so far. Return the calculated error.
+ */
+static bool vlv_PLL_is_optimal(struct drm_device *dev, int target_freq,
+			       const struct dpll *calculated_clock,
+			       const struct dpll *best_clock,
+			       unsigned int best_error_ppm,
+			       unsigned int *error_ppm)
+{
+	/*
+	 * For CHV ignore the error and consider only the P value.
+	 * Prefer a bigger P value based on HW requirements.
+	 */
+	if (IS_CHERRYVIEW(to_i915(dev))) {
+		*error_ppm = 0;
+
+		return calculated_clock->p > best_clock->p;
+	}
+
+	if (drm_WARN_ON_ONCE(dev, !target_freq))
+		return false;
+
+	*error_ppm = div_u64(1000000ULL *
+				abs(target_freq - calculated_clock->dot),
+			     target_freq);
+	/*
+	 * Prefer a better P value over a better (smaller) error if the error
+	 * is small. Ensure this preference for future configurations too by
+	 * setting the error to 0.
+	 */
+	if (*error_ppm < 100 && calculated_clock->p > best_clock->p) {
+		*error_ppm = 0;
+
+		return true;
+	}
+
+	return *error_ppm + 10 < best_error_ppm;
+}
+
+/*
+ * Returns a set of divisors for the desired target clock with the given
+ * refclk, or FALSE.
+ */
+static bool
+vlv_find_best_dpll(const struct intel_limit *limit,
+		   struct intel_crtc_state *crtc_state,
+		   int target, int refclk,
+		   const struct dpll *match_clock,
+		   struct dpll *best_clock)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_device *dev = crtc->base.dev;
+	struct dpll clock;
+	unsigned int bestppm = 1000000;
+	/* min update 19.2 MHz */
+	int max_n = min(limit->n.max, refclk / 19200);
+	bool found = false;
+
+	memset(best_clock, 0, sizeof(*best_clock));
+
+	/* based on hardware requirement, prefer smaller n to precision */
+	for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
+		for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
+			for (clock.p2 = limit->p2.p2_fast; clock.p2 >= limit->p2.p2_slow;
+			     clock.p2 -= clock.p2 > 10 ? 2 : 1) {
+				clock.p = clock.p1 * clock.p2 * 5;
+				/* based on hardware requirement, prefer bigger m1,m2 values */
+				for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max; clock.m1++) {
+					unsigned int ppm;
+
+					clock.m2 = DIV_ROUND_CLOSEST(target * clock.p * clock.n,
+								     refclk * clock.m1);
+
+					vlv_calc_dpll_params(refclk, &clock);
+
+					if (!intel_pll_is_valid(to_i915(dev),
+								limit,
+								&clock))
+						continue;
+
+					if (!vlv_PLL_is_optimal(dev, target,
+								&clock,
+								best_clock,
+								bestppm, &ppm))
+						continue;
+
+					*best_clock = clock;
+					bestppm = ppm;
+					found = true;
+				}
+			}
+		}
+	}
+
+	return found;
+}
+
+/*
+ * Returns a set of divisors for the desired target clock with the given
+ * refclk, or FALSE.
+ */
+static bool
+chv_find_best_dpll(const struct intel_limit *limit,
+		   struct intel_crtc_state *crtc_state,
+		   int target, int refclk,
+		   const struct dpll *match_clock,
+		   struct dpll *best_clock)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_device *dev = crtc->base.dev;
+	unsigned int best_error_ppm;
+	struct dpll clock;
+	u64 m2;
+	int found = false;
+
+	memset(best_clock, 0, sizeof(*best_clock));
+	best_error_ppm = 1000000;
+
+	/*
+	 * Based on hardware doc, the n always set to 1, and m1 always
+	 * set to 2.  If requires to support 200Mhz refclk, we need to
+	 * revisit this because n may not 1 anymore.
+	 */
+	clock.n = 1;
+	clock.m1 = 2;
+
+	for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
+		for (clock.p2 = limit->p2.p2_fast;
+				clock.p2 >= limit->p2.p2_slow;
+				clock.p2 -= clock.p2 > 10 ? 2 : 1) {
+			unsigned int error_ppm;
+
+			clock.p = clock.p1 * clock.p2 * 5;
+
+			m2 = DIV_ROUND_CLOSEST_ULL(mul_u32_u32(target, clock.p * clock.n) << 22,
+						   refclk * clock.m1);
+
+			if (m2 > INT_MAX/clock.m1)
+				continue;
+
+			clock.m2 = m2;
+
+			chv_calc_dpll_params(refclk, &clock);
+
+			if (!intel_pll_is_valid(to_i915(dev), limit, &clock))
+				continue;
+
+			if (!vlv_PLL_is_optimal(dev, target, &clock, best_clock,
+						best_error_ppm, &error_ppm))
+				continue;
+
+			*best_clock = clock;
+			best_error_ppm = error_ppm;
+			found = true;
+		}
+	}
+
+	return found;
+}
+
+bool bxt_find_best_dpll(struct intel_crtc_state *crtc_state,
+			struct dpll *best_clock)
+{
+	const struct intel_limit *limit = &intel_limits_bxt;
+	int refclk = 100000;
+
+	return chv_find_best_dpll(limit, crtc_state,
+				  crtc_state->port_clock, refclk,
+				  NULL, best_clock);
+}
+
+u32 i9xx_dpll_compute_fp(const struct dpll *dpll)
+{
+	return dpll->n << 16 | dpll->m1 << 8 | dpll->m2;
+}
+
+static u32 pnv_dpll_compute_fp(const struct dpll *dpll)
+{
+	return (1 << dpll->n) << 16 | dpll->m2;
+}
+
+static void i9xx_update_pll_dividers(struct intel_crtc_state *crtc_state,
+				     const struct dpll *clock,
+				     const struct dpll *reduced_clock)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	u32 fp, fp2;
+
+	if (IS_PINEVIEW(dev_priv)) {
+		fp = pnv_dpll_compute_fp(clock);
+		fp2 = pnv_dpll_compute_fp(reduced_clock);
+	} else {
+		fp = i9xx_dpll_compute_fp(clock);
+		fp2 = i9xx_dpll_compute_fp(reduced_clock);
+	}
+
+	crtc_state->dpll_hw_state.fp0 = fp;
+	crtc_state->dpll_hw_state.fp1 = fp2;
+}
+
+static void i9xx_compute_dpll(struct intel_crtc_state *crtc_state,
+			      const struct dpll *clock,
+			      const struct dpll *reduced_clock)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	u32 dpll;
+
+	i9xx_update_pll_dividers(crtc_state, clock, reduced_clock);
+
+	dpll = DPLL_VGA_MODE_DIS;
+
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS))
+		dpll |= DPLLB_MODE_LVDS;
+	else
+		dpll |= DPLLB_MODE_DAC_SERIAL;
+
+	if (IS_I945G(dev_priv) || IS_I945GM(dev_priv) ||
+	    IS_G33(dev_priv) || IS_PINEVIEW(dev_priv)) {
+		dpll |= (crtc_state->pixel_multiplier - 1)
+			<< SDVO_MULTIPLIER_SHIFT_HIRES;
+	}
+
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_SDVO) ||
+	    intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		dpll |= DPLL_SDVO_HIGH_SPEED;
+
+	if (intel_crtc_has_dp_encoder(crtc_state))
+		dpll |= DPLL_SDVO_HIGH_SPEED;
+
+	/* compute bitmask from p1 value */
+	if (IS_G4X(dev_priv)) {
+		dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
+		dpll |= (1 << (reduced_clock->p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
+	} else if (IS_PINEVIEW(dev_priv)) {
+		dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW;
+		WARN_ON(reduced_clock->p1 != clock->p1);
+	} else {
+		dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
+		WARN_ON(reduced_clock->p1 != clock->p1);
+	}
+
+	switch (clock->p2) {
+	case 5:
+		dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
+		break;
+	case 7:
+		dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
+		break;
+	case 10:
+		dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
+		break;
+	case 14:
+		dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
+		break;
+	}
+	WARN_ON(reduced_clock->p2 != clock->p2);
+
+	if (DISPLAY_VER(dev_priv) >= 4)
+		dpll |= (6 << PLL_LOAD_PULSE_PHASE_SHIFT);
+
+	if (crtc_state->sdvo_tv_clock)
+		dpll |= PLL_REF_INPUT_TVCLKINBC;
+	else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS) &&
+		 intel_panel_use_ssc(dev_priv))
+		dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
+	else
+		dpll |= PLL_REF_INPUT_DREFCLK;
+
+	dpll |= DPLL_VCO_ENABLE;
+	crtc_state->dpll_hw_state.dpll = dpll;
+
+	if (DISPLAY_VER(dev_priv) >= 4) {
+		u32 dpll_md = (crtc_state->pixel_multiplier - 1)
+			<< DPLL_MD_UDI_MULTIPLIER_SHIFT;
+		crtc_state->dpll_hw_state.dpll_md = dpll_md;
+	}
+}
+
+static void i8xx_compute_dpll(struct intel_crtc_state *crtc_state,
+			      const struct dpll *clock,
+			      const struct dpll *reduced_clock)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	u32 dpll;
+
+	i9xx_update_pll_dividers(crtc_state, clock, reduced_clock);
+
+	dpll = DPLL_VGA_MODE_DIS;
+
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
+		dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
+	} else {
+		if (clock->p1 == 2)
+			dpll |= PLL_P1_DIVIDE_BY_TWO;
+		else
+			dpll |= (clock->p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT;
+		if (clock->p2 == 4)
+			dpll |= PLL_P2_DIVIDE_BY_4;
+	}
+	WARN_ON(reduced_clock->p1 != clock->p1);
+	WARN_ON(reduced_clock->p2 != clock->p2);
+
+	/*
+	 * Bspec:
+	 * "[Almador Errata}: For the correct operation of the muxed DVO pins
+	 *  (GDEVSELB/I2Cdata, GIRDBY/I2CClk) and (GFRAMEB/DVI_Data,
+	 *  GTRDYB/DVI_Clk): Bit 31 (DPLL VCO Enable) and Bit 30 (2X Clock
+	 *  Enable) must be set to “1” in both the DPLL A Control Register
+	 *  (06014h-06017h) and DPLL B Control Register (06018h-0601Bh)."
+	 *
+	 * For simplicity We simply keep both bits always enabled in
+	 * both DPLLS. The spec says we should disable the DVO 2X clock
+	 * when not needed, but this seems to work fine in practice.
+	 */
+	if (IS_I830(dev_priv) ||
+	    intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DVO))
+		dpll |= DPLL_DVO_2X_MODE;
+
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS) &&
+	    intel_panel_use_ssc(dev_priv))
+		dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
+	else
+		dpll |= PLL_REF_INPUT_DREFCLK;
+
+	dpll |= DPLL_VCO_ENABLE;
+	crtc_state->dpll_hw_state.dpll = dpll;
+}
+
+static int hsw_crtc_compute_clock(struct intel_atomic_state *state,
+				  struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	struct intel_encoder *encoder =
+		intel_get_crtc_new_encoder(state, crtc_state);
+	int ret;
+
+	if (DISPLAY_VER(dev_priv) < 11 &&
+	    intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI))
+		return 0;
+
+	ret = intel_compute_shared_dplls(state, crtc, encoder);
+	if (ret)
+		return ret;
+
+	/* FIXME this is a mess */
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI))
+		return 0;
+
+	/* CRT dotclock is determined via other means */
+	if (!crtc_state->has_pch_encoder)
+		crtc_state->hw.adjusted_mode.crtc_clock = intel_crtc_dotclock(crtc_state);
+
+	return 0;
+}
+
+static int hsw_crtc_get_shared_dpll(struct intel_atomic_state *state,
+				    struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	struct intel_encoder *encoder =
+		intel_get_crtc_new_encoder(state, crtc_state);
+
+	if (DISPLAY_VER(dev_priv) < 11 &&
+	    intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI))
+		return 0;
+
+	return intel_reserve_shared_dplls(state, crtc, encoder);
+}
+
+static int dg2_crtc_compute_clock(struct intel_atomic_state *state,
+				  struct intel_crtc *crtc)
+{
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	struct intel_encoder *encoder =
+		intel_get_crtc_new_encoder(state, crtc_state);
+	int ret;
+
+	ret = intel_mpllb_calc_state(crtc_state, encoder);
+	if (ret)
+		return ret;
+
+	crtc_state->hw.adjusted_mode.crtc_clock = intel_crtc_dotclock(crtc_state);
+
+	return 0;
+}
+
+static bool ilk_needs_fb_cb_tune(const struct dpll *dpll, int factor)
+{
+	return dpll->m < factor * dpll->n;
+}
+
+static void ilk_update_pll_dividers(struct intel_crtc_state *crtc_state,
+				    const struct dpll *clock,
+				    const struct dpll *reduced_clock)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	u32 fp, fp2;
+	int factor;
+
+	/* Enable autotuning of the PLL clock (if permissible) */
+	factor = 21;
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
+		if ((intel_panel_use_ssc(dev_priv) &&
+		     dev_priv->display.vbt.lvds_ssc_freq == 100000) ||
+		    (HAS_PCH_IBX(dev_priv) &&
+		     intel_is_dual_link_lvds(dev_priv)))
+			factor = 25;
+	} else if (crtc_state->sdvo_tv_clock) {
+		factor = 20;
+	}
+
+	fp = i9xx_dpll_compute_fp(clock);
+	if (ilk_needs_fb_cb_tune(clock, factor))
+		fp |= FP_CB_TUNE;
+
+	fp2 = i9xx_dpll_compute_fp(reduced_clock);
+	if (ilk_needs_fb_cb_tune(reduced_clock, factor))
+		fp2 |= FP_CB_TUNE;
+
+	crtc_state->dpll_hw_state.fp0 = fp;
+	crtc_state->dpll_hw_state.fp1 = fp2;
+}
+
+static void ilk_compute_dpll(struct intel_crtc_state *crtc_state,
+			     const struct dpll *clock,
+			     const struct dpll *reduced_clock)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	u32 dpll;
+
+	ilk_update_pll_dividers(crtc_state, clock, reduced_clock);
+
+	dpll = 0;
+
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS))
+		dpll |= DPLLB_MODE_LVDS;
+	else
+		dpll |= DPLLB_MODE_DAC_SERIAL;
+
+	dpll |= (crtc_state->pixel_multiplier - 1)
+		<< PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
+
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_SDVO) ||
+	    intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		dpll |= DPLL_SDVO_HIGH_SPEED;
+
+	if (intel_crtc_has_dp_encoder(crtc_state))
+		dpll |= DPLL_SDVO_HIGH_SPEED;
+
+	/*
+	 * The high speed IO clock is only really required for
+	 * SDVO/HDMI/DP, but we also enable it for CRT to make it
+	 * possible to share the DPLL between CRT and HDMI. Enabling
+	 * the clock needlessly does no real harm, except use up a
+	 * bit of power potentially.
+	 *
+	 * We'll limit this to IVB with 3 pipes, since it has only two
+	 * DPLLs and so DPLL sharing is the only way to get three pipes
+	 * driving PCH ports at the same time. On SNB we could do this,
+	 * and potentially avoid enabling the second DPLL, but it's not
+	 * clear if it''s a win or loss power wise. No point in doing
+	 * this on ILK at all since it has a fixed DPLL<->pipe mapping.
+	 */
+	if (INTEL_NUM_PIPES(dev_priv) == 3 &&
+	    intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG))
+		dpll |= DPLL_SDVO_HIGH_SPEED;
+
+	/* compute bitmask from p1 value */
+	dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
+	/* also FPA1 */
+	dpll |= (1 << (reduced_clock->p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
+
+	switch (clock->p2) {
+	case 5:
+		dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
+		break;
+	case 7:
+		dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
+		break;
+	case 10:
+		dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
+		break;
+	case 14:
+		dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
+		break;
+	}
+	WARN_ON(reduced_clock->p2 != clock->p2);
+
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS) &&
+	    intel_panel_use_ssc(dev_priv))
+		dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
+	else
+		dpll |= PLL_REF_INPUT_DREFCLK;
+
+	dpll |= DPLL_VCO_ENABLE;
+
+	crtc_state->dpll_hw_state.dpll = dpll;
+}
+
+static int ilk_crtc_compute_clock(struct intel_atomic_state *state,
+				  struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	const struct intel_limit *limit;
+	int refclk = 120000;
+	int ret;
+
+	/* CPU eDP is the only output that doesn't need a PCH PLL of its own. */
+	if (!crtc_state->has_pch_encoder)
+		return 0;
+
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
+		if (intel_panel_use_ssc(dev_priv)) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "using SSC reference clock of %d kHz\n",
+				    dev_priv->display.vbt.lvds_ssc_freq);
+			refclk = dev_priv->display.vbt.lvds_ssc_freq;
+		}
+
+		if (intel_is_dual_link_lvds(dev_priv)) {
+			if (refclk == 100000)
+				limit = &ilk_limits_dual_lvds_100m;
+			else
+				limit = &ilk_limits_dual_lvds;
+		} else {
+			if (refclk == 100000)
+				limit = &ilk_limits_single_lvds_100m;
+			else
+				limit = &ilk_limits_single_lvds;
+		}
+	} else {
+		limit = &ilk_limits_dac;
+	}
+
+	if (!crtc_state->clock_set &&
+	    !g4x_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
+				refclk, NULL, &crtc_state->dpll))
+		return -EINVAL;
+
+	ilk_compute_dpll(crtc_state, &crtc_state->dpll,
+			 &crtc_state->dpll);
+
+	ret = intel_compute_shared_dplls(state, crtc, NULL);
+	if (ret)
+		return ret;
+
+	crtc_state->port_clock = crtc_state->dpll.dot;
+	crtc_state->hw.adjusted_mode.crtc_clock = intel_crtc_dotclock(crtc_state);
+
+	return ret;
+}
+
+static int ilk_crtc_get_shared_dpll(struct intel_atomic_state *state,
+				    struct intel_crtc *crtc)
+{
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+
+	/* CPU eDP is the only output that doesn't need a PCH PLL of its own. */
+	if (!crtc_state->has_pch_encoder)
+		return 0;
+
+	return intel_reserve_shared_dplls(state, crtc, NULL);
+}
+
+void vlv_compute_dpll(struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+
+	crtc_state->dpll_hw_state.dpll = DPLL_INTEGRATED_REF_CLK_VLV |
+		DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
+	if (crtc->pipe != PIPE_A)
+		crtc_state->dpll_hw_state.dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
+
+	/* DPLL not used with DSI, but still need the rest set up */
+	if (!intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI))
+		crtc_state->dpll_hw_state.dpll |= DPLL_VCO_ENABLE |
+			DPLL_EXT_BUFFER_ENABLE_VLV;
+
+	crtc_state->dpll_hw_state.dpll_md =
+		(crtc_state->pixel_multiplier - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
+}
+
+void chv_compute_dpll(struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+
+	crtc_state->dpll_hw_state.dpll = DPLL_SSC_REF_CLK_CHV |
+		DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
+	if (crtc->pipe != PIPE_A)
+		crtc_state->dpll_hw_state.dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
+
+	/* DPLL not used with DSI, but still need the rest set up */
+	if (!intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI))
+		crtc_state->dpll_hw_state.dpll |= DPLL_VCO_ENABLE;
+
+	crtc_state->dpll_hw_state.dpll_md =
+		(crtc_state->pixel_multiplier - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
+}
+
+static int chv_crtc_compute_clock(struct intel_atomic_state *state,
+				  struct intel_crtc *crtc)
+{
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	const struct intel_limit *limit = &intel_limits_chv;
+	int refclk = 100000;
+
+	if (!crtc_state->clock_set &&
+	    !chv_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
+				refclk, NULL, &crtc_state->dpll))
+		return -EINVAL;
+
+	chv_compute_dpll(crtc_state);
+
+	/* FIXME this is a mess */
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI))
+		return 0;
+
+	crtc_state->port_clock = crtc_state->dpll.dot;
+	crtc_state->hw.adjusted_mode.crtc_clock = intel_crtc_dotclock(crtc_state);
+
+	return 0;
+}
+
+static int vlv_crtc_compute_clock(struct intel_atomic_state *state,
+				  struct intel_crtc *crtc)
+{
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	const struct intel_limit *limit = &intel_limits_vlv;
+	int refclk = 100000;
+
+	if (!crtc_state->clock_set &&
+	    !vlv_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
+				refclk, NULL, &crtc_state->dpll)) {
+		return -EINVAL;
+	}
+
+	vlv_compute_dpll(crtc_state);
+
+	/* FIXME this is a mess */
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI))
+		return 0;
+
+	crtc_state->port_clock = crtc_state->dpll.dot;
+	crtc_state->hw.adjusted_mode.crtc_clock = intel_crtc_dotclock(crtc_state);
+
+	return 0;
+}
+
+static int g4x_crtc_compute_clock(struct intel_atomic_state *state,
+				  struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	const struct intel_limit *limit;
+	int refclk = 96000;
+
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
+		if (intel_panel_use_ssc(dev_priv)) {
+			refclk = dev_priv->display.vbt.lvds_ssc_freq;
+			drm_dbg_kms(&dev_priv->drm,
+				    "using SSC reference clock of %d kHz\n",
+				    refclk);
+		}
+
+		if (intel_is_dual_link_lvds(dev_priv))
+			limit = &intel_limits_g4x_dual_channel_lvds;
+		else
+			limit = &intel_limits_g4x_single_channel_lvds;
+	} else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI) ||
+		   intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG)) {
+		limit = &intel_limits_g4x_hdmi;
+	} else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_SDVO)) {
+		limit = &intel_limits_g4x_sdvo;
+	} else {
+		/* The option is for other outputs */
+		limit = &intel_limits_i9xx_sdvo;
+	}
+
+	if (!crtc_state->clock_set &&
+	    !g4x_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
+				refclk, NULL, &crtc_state->dpll))
+		return -EINVAL;
+
+	i9xx_compute_dpll(crtc_state, &crtc_state->dpll,
+			  &crtc_state->dpll);
+
+	crtc_state->port_clock = crtc_state->dpll.dot;
+	/* FIXME this is a mess */
+	if (!intel_crtc_has_type(crtc_state, INTEL_OUTPUT_TVOUT))
+		crtc_state->hw.adjusted_mode.crtc_clock = intel_crtc_dotclock(crtc_state);
+
+	return 0;
+}
+
+static int pnv_crtc_compute_clock(struct intel_atomic_state *state,
+				  struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	const struct intel_limit *limit;
+	int refclk = 96000;
+
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
+		if (intel_panel_use_ssc(dev_priv)) {
+			refclk = dev_priv->display.vbt.lvds_ssc_freq;
+			drm_dbg_kms(&dev_priv->drm,
+				    "using SSC reference clock of %d kHz\n",
+				    refclk);
+		}
+
+		limit = &pnv_limits_lvds;
+	} else {
+		limit = &pnv_limits_sdvo;
+	}
+
+	if (!crtc_state->clock_set &&
+	    !pnv_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
+				refclk, NULL, &crtc_state->dpll))
+		return -EINVAL;
+
+	i9xx_compute_dpll(crtc_state, &crtc_state->dpll,
+			  &crtc_state->dpll);
+
+	crtc_state->port_clock = crtc_state->dpll.dot;
+	crtc_state->hw.adjusted_mode.crtc_clock = intel_crtc_dotclock(crtc_state);
+
+	return 0;
+}
+
+static int i9xx_crtc_compute_clock(struct intel_atomic_state *state,
+				   struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	const struct intel_limit *limit;
+	int refclk = 96000;
+
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
+		if (intel_panel_use_ssc(dev_priv)) {
+			refclk = dev_priv->display.vbt.lvds_ssc_freq;
+			drm_dbg_kms(&dev_priv->drm,
+				    "using SSC reference clock of %d kHz\n",
+				    refclk);
+		}
+
+		limit = &intel_limits_i9xx_lvds;
+	} else {
+		limit = &intel_limits_i9xx_sdvo;
+	}
+
+	if (!crtc_state->clock_set &&
+	    !i9xx_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
+				 refclk, NULL, &crtc_state->dpll))
+		return -EINVAL;
+
+	i9xx_compute_dpll(crtc_state, &crtc_state->dpll,
+			  &crtc_state->dpll);
+
+	crtc_state->port_clock = crtc_state->dpll.dot;
+	/* FIXME this is a mess */
+	if (!intel_crtc_has_type(crtc_state, INTEL_OUTPUT_TVOUT))
+		crtc_state->hw.adjusted_mode.crtc_clock = intel_crtc_dotclock(crtc_state);
+
+	return 0;
+}
+
+static int i8xx_crtc_compute_clock(struct intel_atomic_state *state,
+				   struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	const struct intel_limit *limit;
+	int refclk = 48000;
+
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
+		if (intel_panel_use_ssc(dev_priv)) {
+			refclk = dev_priv->display.vbt.lvds_ssc_freq;
+			drm_dbg_kms(&dev_priv->drm,
+				    "using SSC reference clock of %d kHz\n",
+				    refclk);
+		}
+
+		limit = &intel_limits_i8xx_lvds;
+	} else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DVO)) {
+		limit = &intel_limits_i8xx_dvo;
+	} else {
+		limit = &intel_limits_i8xx_dac;
+	}
+
+	if (!crtc_state->clock_set &&
+	    !i9xx_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
+				 refclk, NULL, &crtc_state->dpll))
+		return -EINVAL;
+
+	i8xx_compute_dpll(crtc_state, &crtc_state->dpll,
+			  &crtc_state->dpll);
+
+	crtc_state->port_clock = crtc_state->dpll.dot;
+	crtc_state->hw.adjusted_mode.crtc_clock = intel_crtc_dotclock(crtc_state);
+
+	return 0;
+}
+
+static const struct intel_dpll_funcs dg2_dpll_funcs = {
+	.crtc_compute_clock = dg2_crtc_compute_clock,
+};
+
+static const struct intel_dpll_funcs hsw_dpll_funcs = {
+	.crtc_compute_clock = hsw_crtc_compute_clock,
+	.crtc_get_shared_dpll = hsw_crtc_get_shared_dpll,
+};
+
+static const struct intel_dpll_funcs ilk_dpll_funcs = {
+	.crtc_compute_clock = ilk_crtc_compute_clock,
+	.crtc_get_shared_dpll = ilk_crtc_get_shared_dpll,
+};
+
+static const struct intel_dpll_funcs chv_dpll_funcs = {
+	.crtc_compute_clock = chv_crtc_compute_clock,
+};
+
+static const struct intel_dpll_funcs vlv_dpll_funcs = {
+	.crtc_compute_clock = vlv_crtc_compute_clock,
+};
+
+static const struct intel_dpll_funcs g4x_dpll_funcs = {
+	.crtc_compute_clock = g4x_crtc_compute_clock,
+};
+
+static const struct intel_dpll_funcs pnv_dpll_funcs = {
+	.crtc_compute_clock = pnv_crtc_compute_clock,
+};
+
+static const struct intel_dpll_funcs i9xx_dpll_funcs = {
+	.crtc_compute_clock = i9xx_crtc_compute_clock,
+};
+
+static const struct intel_dpll_funcs i8xx_dpll_funcs = {
+	.crtc_compute_clock = i8xx_crtc_compute_clock,
+};
+
+int intel_dpll_crtc_compute_clock(struct intel_atomic_state *state,
+				  struct intel_crtc *crtc)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	int ret;
+
+	drm_WARN_ON(&i915->drm, !intel_crtc_needs_modeset(crtc_state));
+
+	memset(&crtc_state->dpll_hw_state, 0,
+	       sizeof(crtc_state->dpll_hw_state));
+
+	if (!crtc_state->hw.enable)
+		return 0;
+
+	ret = i915->display.funcs.dpll->crtc_compute_clock(state, crtc);
+	if (ret) {
+		drm_dbg_kms(&i915->drm, "[CRTC:%d:%s] Couldn't calculate DPLL settings\n",
+			    crtc->base.base.id, crtc->base.name);
+		return ret;
+	}
+
+	return 0;
+}
+
+int intel_dpll_crtc_get_shared_dpll(struct intel_atomic_state *state,
+				    struct intel_crtc *crtc)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	int ret;
+
+	drm_WARN_ON(&i915->drm, !intel_crtc_needs_modeset(crtc_state));
+	drm_WARN_ON(&i915->drm, !crtc_state->hw.enable && crtc_state->shared_dpll);
+
+	if (!crtc_state->hw.enable || crtc_state->shared_dpll)
+		return 0;
+
+	if (!i915->display.funcs.dpll->crtc_get_shared_dpll)
+		return 0;
+
+	ret = i915->display.funcs.dpll->crtc_get_shared_dpll(state, crtc);
+	if (ret) {
+		drm_dbg_kms(&i915->drm, "[CRTC:%d:%s] Couldn't get a shared DPLL\n",
+			    crtc->base.base.id, crtc->base.name);
+		return ret;
+	}
+
+	return 0;
+}
+
+void
+intel_dpll_init_clock_hook(struct drm_i915_private *dev_priv)
+{
+	if (IS_DG2(dev_priv))
+		dev_priv->display.funcs.dpll = &dg2_dpll_funcs;
+	else if (DISPLAY_VER(dev_priv) >= 9 || HAS_DDI(dev_priv))
+		dev_priv->display.funcs.dpll = &hsw_dpll_funcs;
+	else if (HAS_PCH_SPLIT(dev_priv))
+		dev_priv->display.funcs.dpll = &ilk_dpll_funcs;
+	else if (IS_CHERRYVIEW(dev_priv))
+		dev_priv->display.funcs.dpll = &chv_dpll_funcs;
+	else if (IS_VALLEYVIEW(dev_priv))
+		dev_priv->display.funcs.dpll = &vlv_dpll_funcs;
+	else if (IS_G4X(dev_priv))
+		dev_priv->display.funcs.dpll = &g4x_dpll_funcs;
+	else if (IS_PINEVIEW(dev_priv))
+		dev_priv->display.funcs.dpll = &pnv_dpll_funcs;
+	else if (DISPLAY_VER(dev_priv) != 2)
+		dev_priv->display.funcs.dpll = &i9xx_dpll_funcs;
+	else
+		dev_priv->display.funcs.dpll = &i8xx_dpll_funcs;
+}
+
+static bool i9xx_has_pps(struct drm_i915_private *dev_priv)
+{
+	if (IS_I830(dev_priv))
+		return false;
+
+	return IS_PINEVIEW(dev_priv) || IS_MOBILE(dev_priv);
+}
+
+void i9xx_enable_pll(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	u32 dpll = crtc_state->dpll_hw_state.dpll;
+	enum pipe pipe = crtc->pipe;
+	int i;
+
+	assert_transcoder_disabled(dev_priv, crtc_state->cpu_transcoder);
+
+	/* PLL is protected by panel, make sure we can write it */
+	if (i9xx_has_pps(dev_priv))
+		assert_pps_unlocked(dev_priv, pipe);
+
+	intel_de_write(dev_priv, FP0(pipe), crtc_state->dpll_hw_state.fp0);
+	intel_de_write(dev_priv, FP1(pipe), crtc_state->dpll_hw_state.fp1);
+
+	/*
+	 * Apparently we need to have VGA mode enabled prior to changing
+	 * the P1/P2 dividers. Otherwise the DPLL will keep using the old
+	 * dividers, even though the register value does change.
+	 */
+	intel_de_write(dev_priv, DPLL(pipe), dpll & ~DPLL_VGA_MODE_DIS);
+	intel_de_write(dev_priv, DPLL(pipe), dpll);
+
+	/* Wait for the clocks to stabilize. */
+	intel_de_posting_read(dev_priv, DPLL(pipe));
+	udelay(150);
+
+	if (DISPLAY_VER(dev_priv) >= 4) {
+		intel_de_write(dev_priv, DPLL_MD(pipe),
+			       crtc_state->dpll_hw_state.dpll_md);
+	} else {
+		/* The pixel multiplier can only be updated once the
+		 * DPLL is enabled and the clocks are stable.
+		 *
+		 * So write it again.
+		 */
+		intel_de_write(dev_priv, DPLL(pipe), dpll);
+	}
+
+	/* We do this three times for luck */
+	for (i = 0; i < 3; i++) {
+		intel_de_write(dev_priv, DPLL(pipe), dpll);
+		intel_de_posting_read(dev_priv, DPLL(pipe));
+		udelay(150); /* wait for warmup */
+	}
+}
+
+static void vlv_pllb_recal_opamp(struct drm_i915_private *dev_priv,
+				 enum pipe pipe)
+{
+	u32 reg_val;
+
+	/*
+	 * PLLB opamp always calibrates to max value of 0x3f, force enable it
+	 * and set it to a reasonable value instead.
+	 */
+	reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW9(1));
+	reg_val &= 0xffffff00;
+	reg_val |= 0x00000030;
+	vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9(1), reg_val);
+
+	reg_val = vlv_dpio_read(dev_priv, pipe, VLV_REF_DW13);
+	reg_val &= 0x00ffffff;
+	reg_val |= 0x8c000000;
+	vlv_dpio_write(dev_priv, pipe, VLV_REF_DW13, reg_val);
+
+	reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW9(1));
+	reg_val &= 0xffffff00;
+	vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9(1), reg_val);
+
+	reg_val = vlv_dpio_read(dev_priv, pipe, VLV_REF_DW13);
+	reg_val &= 0x00ffffff;
+	reg_val |= 0xb0000000;
+	vlv_dpio_write(dev_priv, pipe, VLV_REF_DW13, reg_val);
+}
+
+static void vlv_prepare_pll(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+	u32 mdiv;
+	u32 bestn, bestm1, bestm2, bestp1, bestp2;
+	u32 coreclk, reg_val;
+
+	vlv_dpio_get(dev_priv);
+
+	bestn = crtc_state->dpll.n;
+	bestm1 = crtc_state->dpll.m1;
+	bestm2 = crtc_state->dpll.m2;
+	bestp1 = crtc_state->dpll.p1;
+	bestp2 = crtc_state->dpll.p2;
+
+	/* See eDP HDMI DPIO driver vbios notes doc */
+
+	/* PLL B needs special handling */
+	if (pipe == PIPE_B)
+		vlv_pllb_recal_opamp(dev_priv, pipe);
+
+	/* Set up Tx target for periodic Rcomp update */
+	vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9_BCAST, 0x0100000f);
+
+	/* Disable target IRef on PLL */
+	reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW8(pipe));
+	reg_val &= 0x00ffffff;
+	vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW8(pipe), reg_val);
+
+	/* Disable fast lock */
+	vlv_dpio_write(dev_priv, pipe, VLV_CMN_DW0, 0x610);
+
+	/* Set idtafcrecal before PLL is enabled */
+	mdiv = ((bestm1 << DPIO_M1DIV_SHIFT) | (bestm2 & DPIO_M2DIV_MASK));
+	mdiv |= ((bestp1 << DPIO_P1_SHIFT) | (bestp2 << DPIO_P2_SHIFT));
+	mdiv |= ((bestn << DPIO_N_SHIFT));
+	mdiv |= (1 << DPIO_K_SHIFT);
+
+	/*
+	 * Post divider depends on pixel clock rate, DAC vs digital (and LVDS,
+	 * but we don't support that).
+	 * Note: don't use the DAC post divider as it seems unstable.
+	 */
+	mdiv |= (DPIO_POST_DIV_HDMIDP << DPIO_POST_DIV_SHIFT);
+	vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW3(pipe), mdiv);
+
+	mdiv |= DPIO_ENABLE_CALIBRATION;
+	vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW3(pipe), mdiv);
+
+	/* Set HBR and RBR LPF coefficients */
+	if (crtc_state->port_clock == 162000 ||
+	    intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG) ||
+	    intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW10(pipe),
+				 0x009f0003);
+	else
+		vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW10(pipe),
+				 0x00d0000f);
+
+	if (intel_crtc_has_dp_encoder(crtc_state)) {
+		/* Use SSC source */
+		if (pipe == PIPE_A)
+			vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
+					 0x0df40000);
+		else
+			vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
+					 0x0df70000);
+	} else { /* HDMI or VGA */
+		/* Use bend source */
+		if (pipe == PIPE_A)
+			vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
+					 0x0df70000);
+		else
+			vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
+					 0x0df40000);
+	}
+
+	coreclk = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW7(pipe));
+	coreclk = (coreclk & 0x0000ff00) | 0x01c00000;
+	if (intel_crtc_has_dp_encoder(crtc_state))
+		coreclk |= 0x01000000;
+	vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW7(pipe), coreclk);
+
+	vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW11(pipe), 0x87871000);
+
+	vlv_dpio_put(dev_priv);
+}
+
+static void _vlv_enable_pll(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+
+	intel_de_write(dev_priv, DPLL(pipe), crtc_state->dpll_hw_state.dpll);
+	intel_de_posting_read(dev_priv, DPLL(pipe));
+	udelay(150);
+
+	if (intel_de_wait_for_set(dev_priv, DPLL(pipe), DPLL_LOCK_VLV, 1))
+		drm_err(&dev_priv->drm, "DPLL %d failed to lock\n", pipe);
+}
+
+void vlv_enable_pll(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+
+	assert_transcoder_disabled(dev_priv, crtc_state->cpu_transcoder);
+
+	/* PLL is protected by panel, make sure we can write it */
+	assert_pps_unlocked(dev_priv, pipe);
+
+	/* Enable Refclk */
+	intel_de_write(dev_priv, DPLL(pipe),
+		       crtc_state->dpll_hw_state.dpll &
+		       ~(DPLL_VCO_ENABLE | DPLL_EXT_BUFFER_ENABLE_VLV));
+
+	if (crtc_state->dpll_hw_state.dpll & DPLL_VCO_ENABLE) {
+		vlv_prepare_pll(crtc_state);
+		_vlv_enable_pll(crtc_state);
+	}
+
+	intel_de_write(dev_priv, DPLL_MD(pipe),
+		       crtc_state->dpll_hw_state.dpll_md);
+	intel_de_posting_read(dev_priv, DPLL_MD(pipe));
+}
+
+static void chv_prepare_pll(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+	enum dpio_channel port = vlv_pipe_to_channel(pipe);
+	u32 loopfilter, tribuf_calcntr;
+	u32 bestn, bestm1, bestm2, bestp1, bestp2, bestm2_frac;
+	u32 dpio_val;
+	int vco;
+
+	bestn = crtc_state->dpll.n;
+	bestm2_frac = crtc_state->dpll.m2 & 0x3fffff;
+	bestm1 = crtc_state->dpll.m1;
+	bestm2 = crtc_state->dpll.m2 >> 22;
+	bestp1 = crtc_state->dpll.p1;
+	bestp2 = crtc_state->dpll.p2;
+	vco = crtc_state->dpll.vco;
+	dpio_val = 0;
+	loopfilter = 0;
+
+	vlv_dpio_get(dev_priv);
+
+	/* p1 and p2 divider */
+	vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW13(port),
+			5 << DPIO_CHV_S1_DIV_SHIFT |
+			bestp1 << DPIO_CHV_P1_DIV_SHIFT |
+			bestp2 << DPIO_CHV_P2_DIV_SHIFT |
+			1 << DPIO_CHV_K_DIV_SHIFT);
+
+	/* Feedback post-divider - m2 */
+	vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW0(port), bestm2);
+
+	/* Feedback refclk divider - n and m1 */
+	vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW1(port),
+			DPIO_CHV_M1_DIV_BY_2 |
+			1 << DPIO_CHV_N_DIV_SHIFT);
+
+	/* M2 fraction division */
+	vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW2(port), bestm2_frac);
+
+	/* M2 fraction division enable */
+	dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW3(port));
+	dpio_val &= ~(DPIO_CHV_FEEDFWD_GAIN_MASK | DPIO_CHV_FRAC_DIV_EN);
+	dpio_val |= (2 << DPIO_CHV_FEEDFWD_GAIN_SHIFT);
+	if (bestm2_frac)
+		dpio_val |= DPIO_CHV_FRAC_DIV_EN;
+	vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW3(port), dpio_val);
+
+	/* Program digital lock detect threshold */
+	dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW9(port));
+	dpio_val &= ~(DPIO_CHV_INT_LOCK_THRESHOLD_MASK |
+					DPIO_CHV_INT_LOCK_THRESHOLD_SEL_COARSE);
+	dpio_val |= (0x5 << DPIO_CHV_INT_LOCK_THRESHOLD_SHIFT);
+	if (!bestm2_frac)
+		dpio_val |= DPIO_CHV_INT_LOCK_THRESHOLD_SEL_COARSE;
+	vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW9(port), dpio_val);
+
+	/* Loop filter */
+	if (vco == 5400000) {
+		loopfilter |= (0x3 << DPIO_CHV_PROP_COEFF_SHIFT);
+		loopfilter |= (0x8 << DPIO_CHV_INT_COEFF_SHIFT);
+		loopfilter |= (0x1 << DPIO_CHV_GAIN_CTRL_SHIFT);
+		tribuf_calcntr = 0x9;
+	} else if (vco <= 6200000) {
+		loopfilter |= (0x5 << DPIO_CHV_PROP_COEFF_SHIFT);
+		loopfilter |= (0xB << DPIO_CHV_INT_COEFF_SHIFT);
+		loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT);
+		tribuf_calcntr = 0x9;
+	} else if (vco <= 6480000) {
+		loopfilter |= (0x4 << DPIO_CHV_PROP_COEFF_SHIFT);
+		loopfilter |= (0x9 << DPIO_CHV_INT_COEFF_SHIFT);
+		loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT);
+		tribuf_calcntr = 0x8;
+	} else {
+		/* Not supported. Apply the same limits as in the max case */
+		loopfilter |= (0x4 << DPIO_CHV_PROP_COEFF_SHIFT);
+		loopfilter |= (0x9 << DPIO_CHV_INT_COEFF_SHIFT);
+		loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT);
+		tribuf_calcntr = 0;
+	}
+	vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW6(port), loopfilter);
+
+	dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW8(port));
+	dpio_val &= ~DPIO_CHV_TDC_TARGET_CNT_MASK;
+	dpio_val |= (tribuf_calcntr << DPIO_CHV_TDC_TARGET_CNT_SHIFT);
+	vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW8(port), dpio_val);
+
+	/* AFC Recal */
+	vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port),
+			vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port)) |
+			DPIO_AFC_RECAL);
+
+	vlv_dpio_put(dev_priv);
+}
+
+static void _chv_enable_pll(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+	enum dpio_channel port = vlv_pipe_to_channel(pipe);
+	u32 tmp;
+
+	vlv_dpio_get(dev_priv);
+
+	/* Enable back the 10bit clock to display controller */
+	tmp = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port));
+	tmp |= DPIO_DCLKP_EN;
+	vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), tmp);
+
+	vlv_dpio_put(dev_priv);
+
+	/*
+	 * Need to wait > 100ns between dclkp clock enable bit and PLL enable.
+	 */
+	udelay(1);
+
+	/* Enable PLL */
+	intel_de_write(dev_priv, DPLL(pipe), crtc_state->dpll_hw_state.dpll);
+
+	/* Check PLL is locked */
+	if (intel_de_wait_for_set(dev_priv, DPLL(pipe), DPLL_LOCK_VLV, 1))
+		drm_err(&dev_priv->drm, "PLL %d failed to lock\n", pipe);
+}
+
+void chv_enable_pll(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+
+	assert_transcoder_disabled(dev_priv, crtc_state->cpu_transcoder);
+
+	/* PLL is protected by panel, make sure we can write it */
+	assert_pps_unlocked(dev_priv, pipe);
+
+	/* Enable Refclk and SSC */
+	intel_de_write(dev_priv, DPLL(pipe),
+		       crtc_state->dpll_hw_state.dpll & ~DPLL_VCO_ENABLE);
+
+	if (crtc_state->dpll_hw_state.dpll & DPLL_VCO_ENABLE) {
+		chv_prepare_pll(crtc_state);
+		_chv_enable_pll(crtc_state);
+	}
+
+	if (pipe != PIPE_A) {
+		/*
+		 * WaPixelRepeatModeFixForC0:chv
+		 *
+		 * DPLLCMD is AWOL. Use chicken bits to propagate
+		 * the value from DPLLBMD to either pipe B or C.
+		 */
+		intel_de_write(dev_priv, CBR4_VLV, CBR_DPLLBMD_PIPE(pipe));
+		intel_de_write(dev_priv, DPLL_MD(PIPE_B),
+			       crtc_state->dpll_hw_state.dpll_md);
+		intel_de_write(dev_priv, CBR4_VLV, 0);
+		dev_priv->chv_dpll_md[pipe] = crtc_state->dpll_hw_state.dpll_md;
+
+		/*
+		 * DPLLB VGA mode also seems to cause problems.
+		 * We should always have it disabled.
+		 */
+		drm_WARN_ON(&dev_priv->drm,
+			    (intel_de_read(dev_priv, DPLL(PIPE_B)) &
+			     DPLL_VGA_MODE_DIS) == 0);
+	} else {
+		intel_de_write(dev_priv, DPLL_MD(pipe),
+			       crtc_state->dpll_hw_state.dpll_md);
+		intel_de_posting_read(dev_priv, DPLL_MD(pipe));
+	}
+}
+
+/**
+ * vlv_force_pll_on - forcibly enable just the PLL
+ * @dev_priv: i915 private structure
+ * @pipe: pipe PLL to enable
+ * @dpll: PLL configuration
+ *
+ * Enable the PLL for @pipe using the supplied @dpll config. To be used
+ * in cases where we need the PLL enabled even when @pipe is not going to
+ * be enabled.
+ */
+int vlv_force_pll_on(struct drm_i915_private *dev_priv, enum pipe pipe,
+		     const struct dpll *dpll)
+{
+	struct intel_crtc *crtc = intel_crtc_for_pipe(dev_priv, pipe);
+	struct intel_crtc_state *crtc_state;
+
+	crtc_state = intel_crtc_state_alloc(crtc);
+	if (!crtc_state)
+		return -ENOMEM;
+
+	crtc_state->cpu_transcoder = (enum transcoder)pipe;
+	crtc_state->pixel_multiplier = 1;
+	crtc_state->dpll = *dpll;
+	crtc_state->output_types = BIT(INTEL_OUTPUT_EDP);
+
+	if (IS_CHERRYVIEW(dev_priv)) {
+		chv_compute_dpll(crtc_state);
+		chv_enable_pll(crtc_state);
+	} else {
+		vlv_compute_dpll(crtc_state);
+		vlv_enable_pll(crtc_state);
+	}
+
+	kfree(crtc_state);
+
+	return 0;
+}
+
+void vlv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
+{
+	u32 val;
+
+	/* Make sure the pipe isn't still relying on us */
+	assert_transcoder_disabled(dev_priv, (enum transcoder)pipe);
+
+	val = DPLL_INTEGRATED_REF_CLK_VLV |
+		DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
+	if (pipe != PIPE_A)
+		val |= DPLL_INTEGRATED_CRI_CLK_VLV;
+
+	intel_de_write(dev_priv, DPLL(pipe), val);
+	intel_de_posting_read(dev_priv, DPLL(pipe));
+}
+
+void chv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
+{
+	enum dpio_channel port = vlv_pipe_to_channel(pipe);
+	u32 val;
+
+	/* Make sure the pipe isn't still relying on us */
+	assert_transcoder_disabled(dev_priv, (enum transcoder)pipe);
+
+	val = DPLL_SSC_REF_CLK_CHV |
+		DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
+	if (pipe != PIPE_A)
+		val |= DPLL_INTEGRATED_CRI_CLK_VLV;
+
+	intel_de_write(dev_priv, DPLL(pipe), val);
+	intel_de_posting_read(dev_priv, DPLL(pipe));
+
+	vlv_dpio_get(dev_priv);
+
+	/* Disable 10bit clock to display controller */
+	val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port));
+	val &= ~DPIO_DCLKP_EN;
+	vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), val);
+
+	vlv_dpio_put(dev_priv);
+}
+
+void i9xx_disable_pll(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+
+	/* Don't disable pipe or pipe PLLs if needed */
+	if (IS_I830(dev_priv))
+		return;
+
+	/* Make sure the pipe isn't still relying on us */
+	assert_transcoder_disabled(dev_priv, crtc_state->cpu_transcoder);
+
+	intel_de_write(dev_priv, DPLL(pipe), DPLL_VGA_MODE_DIS);
+	intel_de_posting_read(dev_priv, DPLL(pipe));
+}
+
+
+/**
+ * vlv_force_pll_off - forcibly disable just the PLL
+ * @dev_priv: i915 private structure
+ * @pipe: pipe PLL to disable
+ *
+ * Disable the PLL for @pipe. To be used in cases where we need
+ * the PLL enabled even when @pipe is not going to be enabled.
+ */
+void vlv_force_pll_off(struct drm_i915_private *dev_priv, enum pipe pipe)
+{
+	if (IS_CHERRYVIEW(dev_priv))
+		chv_disable_pll(dev_priv, pipe);
+	else
+		vlv_disable_pll(dev_priv, pipe);
+}
+
+/* Only for pre-ILK configs */
+static void assert_pll(struct drm_i915_private *dev_priv,
+		       enum pipe pipe, bool state)
+{
+	bool cur_state;
+
+	cur_state = intel_de_read(dev_priv, DPLL(pipe)) & DPLL_VCO_ENABLE;
+	I915_STATE_WARN(cur_state != state,
+			"PLL state assertion failure (expected %s, current %s)\n",
+			str_on_off(state), str_on_off(cur_state));
+}
+
+void assert_pll_enabled(struct drm_i915_private *i915, enum pipe pipe)
+{
+	assert_pll(i915, pipe, true);
+}
+
+void assert_pll_disabled(struct drm_i915_private *i915, enum pipe pipe)
+{
+	assert_pll(i915, pipe, false);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_dpll.h b/drivers/gpu/drm/i915/display/intel_dpll.h
new file mode 100644
index 000000000..bbc30542f
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dpll.h
@@ -0,0 +1,47 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#ifndef _INTEL_DPLL_H_
+#define _INTEL_DPLL_H_
+
+#include <linux/types.h>
+
+struct dpll;
+struct drm_i915_private;
+struct intel_atomic_state;
+struct intel_crtc;
+struct intel_crtc_state;
+enum pipe;
+
+void intel_dpll_init_clock_hook(struct drm_i915_private *dev_priv);
+int intel_dpll_crtc_compute_clock(struct intel_atomic_state *state,
+				  struct intel_crtc *crtc);
+int intel_dpll_crtc_get_shared_dpll(struct intel_atomic_state *state,
+				    struct intel_crtc *crtc);
+int vlv_calc_dpll_params(int refclk, struct dpll *clock);
+int pnv_calc_dpll_params(int refclk, struct dpll *clock);
+int i9xx_calc_dpll_params(int refclk, struct dpll *clock);
+u32 i9xx_dpll_compute_fp(const struct dpll *dpll);
+void vlv_compute_dpll(struct intel_crtc_state *crtc_state);
+void chv_compute_dpll(struct intel_crtc_state *crtc_state);
+
+int vlv_force_pll_on(struct drm_i915_private *dev_priv, enum pipe pipe,
+		     const struct dpll *dpll);
+void vlv_force_pll_off(struct drm_i915_private *dev_priv, enum pipe pipe);
+
+void chv_enable_pll(const struct intel_crtc_state *crtc_state);
+void chv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe);
+void vlv_enable_pll(const struct intel_crtc_state *crtc_state);
+void vlv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe);
+void i9xx_enable_pll(const struct intel_crtc_state *crtc_state);
+void i9xx_disable_pll(const struct intel_crtc_state *crtc_state);
+bool bxt_find_best_dpll(struct intel_crtc_state *crtc_state,
+			struct dpll *best_clock);
+int chv_calc_dpll_params(int refclk, struct dpll *pll_clock);
+
+void assert_pll_enabled(struct drm_i915_private *i915, enum pipe pipe);
+void assert_pll_disabled(struct drm_i915_private *i915, enum pipe pipe);
+
+#endif
diff --git a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
new file mode 100644
index 000000000..64dd603dc
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
@@ -0,0 +1,4564 @@
+/*
+ * Copyright © 2006-2016 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <linux/string_helpers.h>
+
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_dkl_phy.h"
+#include "intel_dpio_phy.h"
+#include "intel_dpll.h"
+#include "intel_dpll_mgr.h"
+#include "intel_pch_refclk.h"
+#include "intel_tc.h"
+#include "intel_tc_phy_regs.h"
+
+/**
+ * DOC: Display PLLs
+ *
+ * Display PLLs used for driving outputs vary by platform. While some have
+ * per-pipe or per-encoder dedicated PLLs, others allow the use of any PLL
+ * from a pool. In the latter scenario, it is possible that multiple pipes
+ * share a PLL if their configurations match.
+ *
+ * This file provides an abstraction over display PLLs. The function
+ * intel_shared_dpll_init() initializes the PLLs for the given platform.  The
+ * users of a PLL are tracked and that tracking is integrated with the atomic
+ * modset interface. During an atomic operation, required PLLs can be reserved
+ * for a given CRTC and encoder configuration by calling
+ * intel_reserve_shared_dplls() and previously reserved PLLs can be released
+ * with intel_release_shared_dplls().
+ * Changes to the users are first staged in the atomic state, and then made
+ * effective by calling intel_shared_dpll_swap_state() during the atomic
+ * commit phase.
+ */
+
+/* platform specific hooks for managing DPLLs */
+struct intel_shared_dpll_funcs {
+	/*
+	 * Hook for enabling the pll, called from intel_enable_shared_dpll() if
+	 * the pll is not already enabled.
+	 */
+	void (*enable)(struct drm_i915_private *i915,
+		       struct intel_shared_dpll *pll);
+
+	/*
+	 * Hook for disabling the pll, called from intel_disable_shared_dpll()
+	 * only when it is safe to disable the pll, i.e., there are no more
+	 * tracked users for it.
+	 */
+	void (*disable)(struct drm_i915_private *i915,
+			struct intel_shared_dpll *pll);
+
+	/*
+	 * Hook for reading the values currently programmed to the DPLL
+	 * registers. This is used for initial hw state readout and state
+	 * verification after a mode set.
+	 */
+	bool (*get_hw_state)(struct drm_i915_private *i915,
+			     struct intel_shared_dpll *pll,
+			     struct intel_dpll_hw_state *hw_state);
+
+	/*
+	 * Hook for calculating the pll's output frequency based on its passed
+	 * in state.
+	 */
+	int (*get_freq)(struct drm_i915_private *i915,
+			const struct intel_shared_dpll *pll,
+			const struct intel_dpll_hw_state *pll_state);
+};
+
+struct intel_dpll_mgr {
+	const struct dpll_info *dpll_info;
+
+	int (*compute_dplls)(struct intel_atomic_state *state,
+			     struct intel_crtc *crtc,
+			     struct intel_encoder *encoder);
+	int (*get_dplls)(struct intel_atomic_state *state,
+			 struct intel_crtc *crtc,
+			 struct intel_encoder *encoder);
+	void (*put_dplls)(struct intel_atomic_state *state,
+			  struct intel_crtc *crtc);
+	void (*update_active_dpll)(struct intel_atomic_state *state,
+				   struct intel_crtc *crtc,
+				   struct intel_encoder *encoder);
+	void (*update_ref_clks)(struct drm_i915_private *i915);
+	void (*dump_hw_state)(struct drm_i915_private *dev_priv,
+			      const struct intel_dpll_hw_state *hw_state);
+};
+
+static void
+intel_atomic_duplicate_dpll_state(struct drm_i915_private *dev_priv,
+				  struct intel_shared_dpll_state *shared_dpll)
+{
+	enum intel_dpll_id i;
+
+	/* Copy shared dpll state */
+	for (i = 0; i < dev_priv->display.dpll.num_shared_dpll; i++) {
+		struct intel_shared_dpll *pll = &dev_priv->display.dpll.shared_dplls[i];
+
+		shared_dpll[i] = pll->state;
+	}
+}
+
+static struct intel_shared_dpll_state *
+intel_atomic_get_shared_dpll_state(struct drm_atomic_state *s)
+{
+	struct intel_atomic_state *state = to_intel_atomic_state(s);
+
+	drm_WARN_ON(s->dev, !drm_modeset_is_locked(&s->dev->mode_config.connection_mutex));
+
+	if (!state->dpll_set) {
+		state->dpll_set = true;
+
+		intel_atomic_duplicate_dpll_state(to_i915(s->dev),
+						  state->shared_dpll);
+	}
+
+	return state->shared_dpll;
+}
+
+/**
+ * intel_get_shared_dpll_by_id - get a DPLL given its id
+ * @dev_priv: i915 device instance
+ * @id: pll id
+ *
+ * Returns:
+ * A pointer to the DPLL with @id
+ */
+struct intel_shared_dpll *
+intel_get_shared_dpll_by_id(struct drm_i915_private *dev_priv,
+			    enum intel_dpll_id id)
+{
+	return &dev_priv->display.dpll.shared_dplls[id];
+}
+
+/**
+ * intel_get_shared_dpll_id - get the id of a DPLL
+ * @dev_priv: i915 device instance
+ * @pll: the DPLL
+ *
+ * Returns:
+ * The id of @pll
+ */
+enum intel_dpll_id
+intel_get_shared_dpll_id(struct drm_i915_private *dev_priv,
+			 struct intel_shared_dpll *pll)
+{
+	long pll_idx = pll - dev_priv->display.dpll.shared_dplls;
+
+	if (drm_WARN_ON(&dev_priv->drm,
+			pll_idx < 0 ||
+			pll_idx >= dev_priv->display.dpll.num_shared_dpll))
+		return -1;
+
+	return pll_idx;
+}
+
+/* For ILK+ */
+void assert_shared_dpll(struct drm_i915_private *dev_priv,
+			struct intel_shared_dpll *pll,
+			bool state)
+{
+	bool cur_state;
+	struct intel_dpll_hw_state hw_state;
+
+	if (drm_WARN(&dev_priv->drm, !pll,
+		     "asserting DPLL %s with no DPLL\n", str_on_off(state)))
+		return;
+
+	cur_state = intel_dpll_get_hw_state(dev_priv, pll, &hw_state);
+	I915_STATE_WARN(cur_state != state,
+	     "%s assertion failure (expected %s, current %s)\n",
+			pll->info->name, str_on_off(state),
+			str_on_off(cur_state));
+}
+
+static enum tc_port icl_pll_id_to_tc_port(enum intel_dpll_id id)
+{
+	return TC_PORT_1 + id - DPLL_ID_ICL_MGPLL1;
+}
+
+enum intel_dpll_id icl_tc_port_to_pll_id(enum tc_port tc_port)
+{
+	return tc_port - TC_PORT_1 + DPLL_ID_ICL_MGPLL1;
+}
+
+static i915_reg_t
+intel_combo_pll_enable_reg(struct drm_i915_private *i915,
+			   struct intel_shared_dpll *pll)
+{
+	if (IS_DG1(i915))
+		return DG1_DPLL_ENABLE(pll->info->id);
+	else if (IS_JSL_EHL(i915) && (pll->info->id == DPLL_ID_EHL_DPLL4))
+		return MG_PLL_ENABLE(0);
+
+	return ICL_DPLL_ENABLE(pll->info->id);
+}
+
+static i915_reg_t
+intel_tc_pll_enable_reg(struct drm_i915_private *i915,
+			struct intel_shared_dpll *pll)
+{
+	const enum intel_dpll_id id = pll->info->id;
+	enum tc_port tc_port = icl_pll_id_to_tc_port(id);
+
+	if (IS_ALDERLAKE_P(i915))
+		return ADLP_PORTTC_PLL_ENABLE(tc_port);
+
+	return MG_PLL_ENABLE(tc_port);
+}
+
+/**
+ * intel_enable_shared_dpll - enable a CRTC's shared DPLL
+ * @crtc_state: CRTC, and its state, which has a shared DPLL
+ *
+ * Enable the shared DPLL used by @crtc.
+ */
+void intel_enable_shared_dpll(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	struct intel_shared_dpll *pll = crtc_state->shared_dpll;
+	unsigned int pipe_mask = BIT(crtc->pipe);
+	unsigned int old_mask;
+
+	if (drm_WARN_ON(&dev_priv->drm, pll == NULL))
+		return;
+
+	mutex_lock(&dev_priv->display.dpll.lock);
+	old_mask = pll->active_mask;
+
+	if (drm_WARN_ON(&dev_priv->drm, !(pll->state.pipe_mask & pipe_mask)) ||
+	    drm_WARN_ON(&dev_priv->drm, pll->active_mask & pipe_mask))
+		goto out;
+
+	pll->active_mask |= pipe_mask;
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "enable %s (active 0x%x, on? %d) for [CRTC:%d:%s]\n",
+		    pll->info->name, pll->active_mask, pll->on,
+		    crtc->base.base.id, crtc->base.name);
+
+	if (old_mask) {
+		drm_WARN_ON(&dev_priv->drm, !pll->on);
+		assert_shared_dpll_enabled(dev_priv, pll);
+		goto out;
+	}
+	drm_WARN_ON(&dev_priv->drm, pll->on);
+
+	drm_dbg_kms(&dev_priv->drm, "enabling %s\n", pll->info->name);
+	pll->info->funcs->enable(dev_priv, pll);
+	pll->on = true;
+
+out:
+	mutex_unlock(&dev_priv->display.dpll.lock);
+}
+
+/**
+ * intel_disable_shared_dpll - disable a CRTC's shared DPLL
+ * @crtc_state: CRTC, and its state, which has a shared DPLL
+ *
+ * Disable the shared DPLL used by @crtc.
+ */
+void intel_disable_shared_dpll(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	struct intel_shared_dpll *pll = crtc_state->shared_dpll;
+	unsigned int pipe_mask = BIT(crtc->pipe);
+
+	/* PCH only available on ILK+ */
+	if (DISPLAY_VER(dev_priv) < 5)
+		return;
+
+	if (pll == NULL)
+		return;
+
+	mutex_lock(&dev_priv->display.dpll.lock);
+	if (drm_WARN(&dev_priv->drm, !(pll->active_mask & pipe_mask),
+		     "%s not used by [CRTC:%d:%s]\n", pll->info->name,
+		     crtc->base.base.id, crtc->base.name))
+		goto out;
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "disable %s (active 0x%x, on? %d) for [CRTC:%d:%s]\n",
+		    pll->info->name, pll->active_mask, pll->on,
+		    crtc->base.base.id, crtc->base.name);
+
+	assert_shared_dpll_enabled(dev_priv, pll);
+	drm_WARN_ON(&dev_priv->drm, !pll->on);
+
+	pll->active_mask &= ~pipe_mask;
+	if (pll->active_mask)
+		goto out;
+
+	drm_dbg_kms(&dev_priv->drm, "disabling %s\n", pll->info->name);
+	pll->info->funcs->disable(dev_priv, pll);
+	pll->on = false;
+
+out:
+	mutex_unlock(&dev_priv->display.dpll.lock);
+}
+
+static struct intel_shared_dpll *
+intel_find_shared_dpll(struct intel_atomic_state *state,
+		       const struct intel_crtc *crtc,
+		       const struct intel_dpll_hw_state *pll_state,
+		       unsigned long dpll_mask)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	struct intel_shared_dpll *pll, *unused_pll = NULL;
+	struct intel_shared_dpll_state *shared_dpll;
+	enum intel_dpll_id i;
+
+	shared_dpll = intel_atomic_get_shared_dpll_state(&state->base);
+
+	drm_WARN_ON(&dev_priv->drm, dpll_mask & ~(BIT(I915_NUM_PLLS) - 1));
+
+	for_each_set_bit(i, &dpll_mask, I915_NUM_PLLS) {
+		pll = &dev_priv->display.dpll.shared_dplls[i];
+
+		/* Only want to check enabled timings first */
+		if (shared_dpll[i].pipe_mask == 0) {
+			if (!unused_pll)
+				unused_pll = pll;
+			continue;
+		}
+
+		if (memcmp(pll_state,
+			   &shared_dpll[i].hw_state,
+			   sizeof(*pll_state)) == 0) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "[CRTC:%d:%s] sharing existing %s (pipe mask 0x%x, active 0x%x)\n",
+				    crtc->base.base.id, crtc->base.name,
+				    pll->info->name,
+				    shared_dpll[i].pipe_mask,
+				    pll->active_mask);
+			return pll;
+		}
+	}
+
+	/* Ok no matching timings, maybe there's a free one? */
+	if (unused_pll) {
+		drm_dbg_kms(&dev_priv->drm, "[CRTC:%d:%s] allocated %s\n",
+			    crtc->base.base.id, crtc->base.name,
+			    unused_pll->info->name);
+		return unused_pll;
+	}
+
+	return NULL;
+}
+
+static void
+intel_reference_shared_dpll(struct intel_atomic_state *state,
+			    const struct intel_crtc *crtc,
+			    const struct intel_shared_dpll *pll,
+			    const struct intel_dpll_hw_state *pll_state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	struct intel_shared_dpll_state *shared_dpll;
+	const enum intel_dpll_id id = pll->info->id;
+
+	shared_dpll = intel_atomic_get_shared_dpll_state(&state->base);
+
+	if (shared_dpll[id].pipe_mask == 0)
+		shared_dpll[id].hw_state = *pll_state;
+
+	drm_dbg(&i915->drm, "using %s for pipe %c\n", pll->info->name,
+		pipe_name(crtc->pipe));
+
+	shared_dpll[id].pipe_mask |= BIT(crtc->pipe);
+}
+
+static void intel_unreference_shared_dpll(struct intel_atomic_state *state,
+					  const struct intel_crtc *crtc,
+					  const struct intel_shared_dpll *pll)
+{
+	struct intel_shared_dpll_state *shared_dpll;
+
+	shared_dpll = intel_atomic_get_shared_dpll_state(&state->base);
+	shared_dpll[pll->info->id].pipe_mask &= ~BIT(crtc->pipe);
+}
+
+static void intel_put_dpll(struct intel_atomic_state *state,
+			   struct intel_crtc *crtc)
+{
+	const struct intel_crtc_state *old_crtc_state =
+		intel_atomic_get_old_crtc_state(state, crtc);
+	struct intel_crtc_state *new_crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+
+	new_crtc_state->shared_dpll = NULL;
+
+	if (!old_crtc_state->shared_dpll)
+		return;
+
+	intel_unreference_shared_dpll(state, crtc, old_crtc_state->shared_dpll);
+}
+
+/**
+ * intel_shared_dpll_swap_state - make atomic DPLL configuration effective
+ * @state: atomic state
+ *
+ * This is the dpll version of drm_atomic_helper_swap_state() since the
+ * helper does not handle driver-specific global state.
+ *
+ * For consistency with atomic helpers this function does a complete swap,
+ * i.e. it also puts the current state into @state, even though there is no
+ * need for that at this moment.
+ */
+void intel_shared_dpll_swap_state(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct intel_shared_dpll_state *shared_dpll = state->shared_dpll;
+	enum intel_dpll_id i;
+
+	if (!state->dpll_set)
+		return;
+
+	for (i = 0; i < dev_priv->display.dpll.num_shared_dpll; i++) {
+		struct intel_shared_dpll *pll =
+			&dev_priv->display.dpll.shared_dplls[i];
+
+		swap(pll->state, shared_dpll[i]);
+	}
+}
+
+static bool ibx_pch_dpll_get_hw_state(struct drm_i915_private *dev_priv,
+				      struct intel_shared_dpll *pll,
+				      struct intel_dpll_hw_state *hw_state)
+{
+	const enum intel_dpll_id id = pll->info->id;
+	intel_wakeref_t wakeref;
+	u32 val;
+
+	wakeref = intel_display_power_get_if_enabled(dev_priv,
+						     POWER_DOMAIN_DISPLAY_CORE);
+	if (!wakeref)
+		return false;
+
+	val = intel_de_read(dev_priv, PCH_DPLL(id));
+	hw_state->dpll = val;
+	hw_state->fp0 = intel_de_read(dev_priv, PCH_FP0(id));
+	hw_state->fp1 = intel_de_read(dev_priv, PCH_FP1(id));
+
+	intel_display_power_put(dev_priv, POWER_DOMAIN_DISPLAY_CORE, wakeref);
+
+	return val & DPLL_VCO_ENABLE;
+}
+
+static void ibx_assert_pch_refclk_enabled(struct drm_i915_private *dev_priv)
+{
+	u32 val;
+	bool enabled;
+
+	I915_STATE_WARN_ON(!(HAS_PCH_IBX(dev_priv) || HAS_PCH_CPT(dev_priv)));
+
+	val = intel_de_read(dev_priv, PCH_DREF_CONTROL);
+	enabled = !!(val & (DREF_SSC_SOURCE_MASK | DREF_NONSPREAD_SOURCE_MASK |
+			    DREF_SUPERSPREAD_SOURCE_MASK));
+	I915_STATE_WARN(!enabled, "PCH refclk assertion failure, should be active but is disabled\n");
+}
+
+static void ibx_pch_dpll_enable(struct drm_i915_private *dev_priv,
+				struct intel_shared_dpll *pll)
+{
+	const enum intel_dpll_id id = pll->info->id;
+
+	/* PCH refclock must be enabled first */
+	ibx_assert_pch_refclk_enabled(dev_priv);
+
+	intel_de_write(dev_priv, PCH_FP0(id), pll->state.hw_state.fp0);
+	intel_de_write(dev_priv, PCH_FP1(id), pll->state.hw_state.fp1);
+
+	intel_de_write(dev_priv, PCH_DPLL(id), pll->state.hw_state.dpll);
+
+	/* Wait for the clocks to stabilize. */
+	intel_de_posting_read(dev_priv, PCH_DPLL(id));
+	udelay(150);
+
+	/* The pixel multiplier can only be updated once the
+	 * DPLL is enabled and the clocks are stable.
+	 *
+	 * So write it again.
+	 */
+	intel_de_write(dev_priv, PCH_DPLL(id), pll->state.hw_state.dpll);
+	intel_de_posting_read(dev_priv, PCH_DPLL(id));
+	udelay(200);
+}
+
+static void ibx_pch_dpll_disable(struct drm_i915_private *dev_priv,
+				 struct intel_shared_dpll *pll)
+{
+	const enum intel_dpll_id id = pll->info->id;
+
+	intel_de_write(dev_priv, PCH_DPLL(id), 0);
+	intel_de_posting_read(dev_priv, PCH_DPLL(id));
+	udelay(200);
+}
+
+static int ibx_compute_dpll(struct intel_atomic_state *state,
+			    struct intel_crtc *crtc,
+			    struct intel_encoder *encoder)
+{
+	return 0;
+}
+
+static int ibx_get_dpll(struct intel_atomic_state *state,
+			struct intel_crtc *crtc,
+			struct intel_encoder *encoder)
+{
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	struct intel_shared_dpll *pll;
+	enum intel_dpll_id i;
+
+	if (HAS_PCH_IBX(dev_priv)) {
+		/* Ironlake PCH has a fixed PLL->PCH pipe mapping. */
+		i = (enum intel_dpll_id) crtc->pipe;
+		pll = &dev_priv->display.dpll.shared_dplls[i];
+
+		drm_dbg_kms(&dev_priv->drm,
+			    "[CRTC:%d:%s] using pre-allocated %s\n",
+			    crtc->base.base.id, crtc->base.name,
+			    pll->info->name);
+	} else {
+		pll = intel_find_shared_dpll(state, crtc,
+					     &crtc_state->dpll_hw_state,
+					     BIT(DPLL_ID_PCH_PLL_B) |
+					     BIT(DPLL_ID_PCH_PLL_A));
+	}
+
+	if (!pll)
+		return -EINVAL;
+
+	/* reference the pll */
+	intel_reference_shared_dpll(state, crtc,
+				    pll, &crtc_state->dpll_hw_state);
+
+	crtc_state->shared_dpll = pll;
+
+	return 0;
+}
+
+static void ibx_dump_hw_state(struct drm_i915_private *dev_priv,
+			      const struct intel_dpll_hw_state *hw_state)
+{
+	drm_dbg_kms(&dev_priv->drm,
+		    "dpll_hw_state: dpll: 0x%x, dpll_md: 0x%x, "
+		    "fp0: 0x%x, fp1: 0x%x\n",
+		    hw_state->dpll,
+		    hw_state->dpll_md,
+		    hw_state->fp0,
+		    hw_state->fp1);
+}
+
+static const struct intel_shared_dpll_funcs ibx_pch_dpll_funcs = {
+	.enable = ibx_pch_dpll_enable,
+	.disable = ibx_pch_dpll_disable,
+	.get_hw_state = ibx_pch_dpll_get_hw_state,
+};
+
+static const struct dpll_info pch_plls[] = {
+	{ "PCH DPLL A", &ibx_pch_dpll_funcs, DPLL_ID_PCH_PLL_A, 0 },
+	{ "PCH DPLL B", &ibx_pch_dpll_funcs, DPLL_ID_PCH_PLL_B, 0 },
+	{ },
+};
+
+static const struct intel_dpll_mgr pch_pll_mgr = {
+	.dpll_info = pch_plls,
+	.compute_dplls = ibx_compute_dpll,
+	.get_dplls = ibx_get_dpll,
+	.put_dplls = intel_put_dpll,
+	.dump_hw_state = ibx_dump_hw_state,
+};
+
+static void hsw_ddi_wrpll_enable(struct drm_i915_private *dev_priv,
+				 struct intel_shared_dpll *pll)
+{
+	const enum intel_dpll_id id = pll->info->id;
+
+	intel_de_write(dev_priv, WRPLL_CTL(id), pll->state.hw_state.wrpll);
+	intel_de_posting_read(dev_priv, WRPLL_CTL(id));
+	udelay(20);
+}
+
+static void hsw_ddi_spll_enable(struct drm_i915_private *dev_priv,
+				struct intel_shared_dpll *pll)
+{
+	intel_de_write(dev_priv, SPLL_CTL, pll->state.hw_state.spll);
+	intel_de_posting_read(dev_priv, SPLL_CTL);
+	udelay(20);
+}
+
+static void hsw_ddi_wrpll_disable(struct drm_i915_private *dev_priv,
+				  struct intel_shared_dpll *pll)
+{
+	const enum intel_dpll_id id = pll->info->id;
+	u32 val;
+
+	val = intel_de_read(dev_priv, WRPLL_CTL(id));
+	intel_de_write(dev_priv, WRPLL_CTL(id), val & ~WRPLL_PLL_ENABLE);
+	intel_de_posting_read(dev_priv, WRPLL_CTL(id));
+
+	/*
+	 * Try to set up the PCH reference clock once all DPLLs
+	 * that depend on it have been shut down.
+	 */
+	if (dev_priv->pch_ssc_use & BIT(id))
+		intel_init_pch_refclk(dev_priv);
+}
+
+static void hsw_ddi_spll_disable(struct drm_i915_private *dev_priv,
+				 struct intel_shared_dpll *pll)
+{
+	enum intel_dpll_id id = pll->info->id;
+	u32 val;
+
+	val = intel_de_read(dev_priv, SPLL_CTL);
+	intel_de_write(dev_priv, SPLL_CTL, val & ~SPLL_PLL_ENABLE);
+	intel_de_posting_read(dev_priv, SPLL_CTL);
+
+	/*
+	 * Try to set up the PCH reference clock once all DPLLs
+	 * that depend on it have been shut down.
+	 */
+	if (dev_priv->pch_ssc_use & BIT(id))
+		intel_init_pch_refclk(dev_priv);
+}
+
+static bool hsw_ddi_wrpll_get_hw_state(struct drm_i915_private *dev_priv,
+				       struct intel_shared_dpll *pll,
+				       struct intel_dpll_hw_state *hw_state)
+{
+	const enum intel_dpll_id id = pll->info->id;
+	intel_wakeref_t wakeref;
+	u32 val;
+
+	wakeref = intel_display_power_get_if_enabled(dev_priv,
+						     POWER_DOMAIN_DISPLAY_CORE);
+	if (!wakeref)
+		return false;
+
+	val = intel_de_read(dev_priv, WRPLL_CTL(id));
+	hw_state->wrpll = val;
+
+	intel_display_power_put(dev_priv, POWER_DOMAIN_DISPLAY_CORE, wakeref);
+
+	return val & WRPLL_PLL_ENABLE;
+}
+
+static bool hsw_ddi_spll_get_hw_state(struct drm_i915_private *dev_priv,
+				      struct intel_shared_dpll *pll,
+				      struct intel_dpll_hw_state *hw_state)
+{
+	intel_wakeref_t wakeref;
+	u32 val;
+
+	wakeref = intel_display_power_get_if_enabled(dev_priv,
+						     POWER_DOMAIN_DISPLAY_CORE);
+	if (!wakeref)
+		return false;
+
+	val = intel_de_read(dev_priv, SPLL_CTL);
+	hw_state->spll = val;
+
+	intel_display_power_put(dev_priv, POWER_DOMAIN_DISPLAY_CORE, wakeref);
+
+	return val & SPLL_PLL_ENABLE;
+}
+
+#define LC_FREQ 2700
+#define LC_FREQ_2K U64_C(LC_FREQ * 2000)
+
+#define P_MIN 2
+#define P_MAX 64
+#define P_INC 2
+
+/* Constraints for PLL good behavior */
+#define REF_MIN 48
+#define REF_MAX 400
+#define VCO_MIN 2400
+#define VCO_MAX 4800
+
+struct hsw_wrpll_rnp {
+	unsigned p, n2, r2;
+};
+
+static unsigned hsw_wrpll_get_budget_for_freq(int clock)
+{
+	unsigned budget;
+
+	switch (clock) {
+	case 25175000:
+	case 25200000:
+	case 27000000:
+	case 27027000:
+	case 37762500:
+	case 37800000:
+	case 40500000:
+	case 40541000:
+	case 54000000:
+	case 54054000:
+	case 59341000:
+	case 59400000:
+	case 72000000:
+	case 74176000:
+	case 74250000:
+	case 81000000:
+	case 81081000:
+	case 89012000:
+	case 89100000:
+	case 108000000:
+	case 108108000:
+	case 111264000:
+	case 111375000:
+	case 148352000:
+	case 148500000:
+	case 162000000:
+	case 162162000:
+	case 222525000:
+	case 222750000:
+	case 296703000:
+	case 297000000:
+		budget = 0;
+		break;
+	case 233500000:
+	case 245250000:
+	case 247750000:
+	case 253250000:
+	case 298000000:
+		budget = 1500;
+		break;
+	case 169128000:
+	case 169500000:
+	case 179500000:
+	case 202000000:
+		budget = 2000;
+		break;
+	case 256250000:
+	case 262500000:
+	case 270000000:
+	case 272500000:
+	case 273750000:
+	case 280750000:
+	case 281250000:
+	case 286000000:
+	case 291750000:
+		budget = 4000;
+		break;
+	case 267250000:
+	case 268500000:
+		budget = 5000;
+		break;
+	default:
+		budget = 1000;
+		break;
+	}
+
+	return budget;
+}
+
+static void hsw_wrpll_update_rnp(u64 freq2k, unsigned int budget,
+				 unsigned int r2, unsigned int n2,
+				 unsigned int p,
+				 struct hsw_wrpll_rnp *best)
+{
+	u64 a, b, c, d, diff, diff_best;
+
+	/* No best (r,n,p) yet */
+	if (best->p == 0) {
+		best->p = p;
+		best->n2 = n2;
+		best->r2 = r2;
+		return;
+	}
+
+	/*
+	 * Output clock is (LC_FREQ_2K / 2000) * N / (P * R), which compares to
+	 * freq2k.
+	 *
+	 * delta = 1e6 *
+	 *	   abs(freq2k - (LC_FREQ_2K * n2/(p * r2))) /
+	 *	   freq2k;
+	 *
+	 * and we would like delta <= budget.
+	 *
+	 * If the discrepancy is above the PPM-based budget, always prefer to
+	 * improve upon the previous solution.  However, if you're within the
+	 * budget, try to maximize Ref * VCO, that is N / (P * R^2).
+	 */
+	a = freq2k * budget * p * r2;
+	b = freq2k * budget * best->p * best->r2;
+	diff = abs_diff(freq2k * p * r2, LC_FREQ_2K * n2);
+	diff_best = abs_diff(freq2k * best->p * best->r2,
+			     LC_FREQ_2K * best->n2);
+	c = 1000000 * diff;
+	d = 1000000 * diff_best;
+
+	if (a < c && b < d) {
+		/* If both are above the budget, pick the closer */
+		if (best->p * best->r2 * diff < p * r2 * diff_best) {
+			best->p = p;
+			best->n2 = n2;
+			best->r2 = r2;
+		}
+	} else if (a >= c && b < d) {
+		/* If A is below the threshold but B is above it?  Update. */
+		best->p = p;
+		best->n2 = n2;
+		best->r2 = r2;
+	} else if (a >= c && b >= d) {
+		/* Both are below the limit, so pick the higher n2/(r2*r2) */
+		if (n2 * best->r2 * best->r2 > best->n2 * r2 * r2) {
+			best->p = p;
+			best->n2 = n2;
+			best->r2 = r2;
+		}
+	}
+	/* Otherwise a < c && b >= d, do nothing */
+}
+
+static void
+hsw_ddi_calculate_wrpll(int clock /* in Hz */,
+			unsigned *r2_out, unsigned *n2_out, unsigned *p_out)
+{
+	u64 freq2k;
+	unsigned p, n2, r2;
+	struct hsw_wrpll_rnp best = {};
+	unsigned budget;
+
+	freq2k = clock / 100;
+
+	budget = hsw_wrpll_get_budget_for_freq(clock);
+
+	/* Special case handling for 540 pixel clock: bypass WR PLL entirely
+	 * and directly pass the LC PLL to it. */
+	if (freq2k == 5400000) {
+		*n2_out = 2;
+		*p_out = 1;
+		*r2_out = 2;
+		return;
+	}
+
+	/*
+	 * Ref = LC_FREQ / R, where Ref is the actual reference input seen by
+	 * the WR PLL.
+	 *
+	 * We want R so that REF_MIN <= Ref <= REF_MAX.
+	 * Injecting R2 = 2 * R gives:
+	 *   REF_MAX * r2 > LC_FREQ * 2 and
+	 *   REF_MIN * r2 < LC_FREQ * 2
+	 *
+	 * Which means the desired boundaries for r2 are:
+	 *  LC_FREQ * 2 / REF_MAX < r2 < LC_FREQ * 2 / REF_MIN
+	 *
+	 */
+	for (r2 = LC_FREQ * 2 / REF_MAX + 1;
+	     r2 <= LC_FREQ * 2 / REF_MIN;
+	     r2++) {
+
+		/*
+		 * VCO = N * Ref, that is: VCO = N * LC_FREQ / R
+		 *
+		 * Once again we want VCO_MIN <= VCO <= VCO_MAX.
+		 * Injecting R2 = 2 * R and N2 = 2 * N, we get:
+		 *   VCO_MAX * r2 > n2 * LC_FREQ and
+		 *   VCO_MIN * r2 < n2 * LC_FREQ)
+		 *
+		 * Which means the desired boundaries for n2 are:
+		 * VCO_MIN * r2 / LC_FREQ < n2 < VCO_MAX * r2 / LC_FREQ
+		 */
+		for (n2 = VCO_MIN * r2 / LC_FREQ + 1;
+		     n2 <= VCO_MAX * r2 / LC_FREQ;
+		     n2++) {
+
+			for (p = P_MIN; p <= P_MAX; p += P_INC)
+				hsw_wrpll_update_rnp(freq2k, budget,
+						     r2, n2, p, &best);
+		}
+	}
+
+	*n2_out = best.n2;
+	*p_out = best.p;
+	*r2_out = best.r2;
+}
+
+static int hsw_ddi_wrpll_get_freq(struct drm_i915_private *dev_priv,
+				  const struct intel_shared_dpll *pll,
+				  const struct intel_dpll_hw_state *pll_state)
+{
+	int refclk;
+	int n, p, r;
+	u32 wrpll = pll_state->wrpll;
+
+	switch (wrpll & WRPLL_REF_MASK) {
+	case WRPLL_REF_SPECIAL_HSW:
+		/* Muxed-SSC for BDW, non-SSC for non-ULT HSW. */
+		if (IS_HASWELL(dev_priv) && !IS_HSW_ULT(dev_priv)) {
+			refclk = dev_priv->display.dpll.ref_clks.nssc;
+			break;
+		}
+		fallthrough;
+	case WRPLL_REF_PCH_SSC:
+		/*
+		 * We could calculate spread here, but our checking
+		 * code only cares about 5% accuracy, and spread is a max of
+		 * 0.5% downspread.
+		 */
+		refclk = dev_priv->display.dpll.ref_clks.ssc;
+		break;
+	case WRPLL_REF_LCPLL:
+		refclk = 2700000;
+		break;
+	default:
+		MISSING_CASE(wrpll);
+		return 0;
+	}
+
+	r = wrpll & WRPLL_DIVIDER_REF_MASK;
+	p = (wrpll & WRPLL_DIVIDER_POST_MASK) >> WRPLL_DIVIDER_POST_SHIFT;
+	n = (wrpll & WRPLL_DIVIDER_FB_MASK) >> WRPLL_DIVIDER_FB_SHIFT;
+
+	/* Convert to KHz, p & r have a fixed point portion */
+	return (refclk * n / 10) / (p * r) * 2;
+}
+
+static int
+hsw_ddi_wrpll_compute_dpll(struct intel_atomic_state *state,
+			   struct intel_crtc *crtc)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	unsigned int p, n2, r2;
+
+	hsw_ddi_calculate_wrpll(crtc_state->port_clock * 1000, &r2, &n2, &p);
+
+	crtc_state->dpll_hw_state.wrpll =
+		WRPLL_PLL_ENABLE | WRPLL_REF_LCPLL |
+		WRPLL_DIVIDER_REFERENCE(r2) | WRPLL_DIVIDER_FEEDBACK(n2) |
+		WRPLL_DIVIDER_POST(p);
+
+	crtc_state->port_clock = hsw_ddi_wrpll_get_freq(i915, NULL,
+							&crtc_state->dpll_hw_state);
+
+	return 0;
+}
+
+static struct intel_shared_dpll *
+hsw_ddi_wrpll_get_dpll(struct intel_atomic_state *state,
+		       struct intel_crtc *crtc)
+{
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+
+	return intel_find_shared_dpll(state, crtc,
+				      &crtc_state->dpll_hw_state,
+				      BIT(DPLL_ID_WRPLL2) |
+				      BIT(DPLL_ID_WRPLL1));
+}
+
+static int
+hsw_ddi_lcpll_compute_dpll(struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+	int clock = crtc_state->port_clock;
+
+	switch (clock / 2) {
+	case 81000:
+	case 135000:
+	case 270000:
+		return 0;
+	default:
+		drm_dbg_kms(&dev_priv->drm, "Invalid clock for DP: %d\n",
+			    clock);
+		return -EINVAL;
+	}
+}
+
+static struct intel_shared_dpll *
+hsw_ddi_lcpll_get_dpll(struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+	struct intel_shared_dpll *pll;
+	enum intel_dpll_id pll_id;
+	int clock = crtc_state->port_clock;
+
+	switch (clock / 2) {
+	case 81000:
+		pll_id = DPLL_ID_LCPLL_810;
+		break;
+	case 135000:
+		pll_id = DPLL_ID_LCPLL_1350;
+		break;
+	case 270000:
+		pll_id = DPLL_ID_LCPLL_2700;
+		break;
+	default:
+		MISSING_CASE(clock / 2);
+		return NULL;
+	}
+
+	pll = intel_get_shared_dpll_by_id(dev_priv, pll_id);
+
+	if (!pll)
+		return NULL;
+
+	return pll;
+}
+
+static int hsw_ddi_lcpll_get_freq(struct drm_i915_private *i915,
+				  const struct intel_shared_dpll *pll,
+				  const struct intel_dpll_hw_state *pll_state)
+{
+	int link_clock = 0;
+
+	switch (pll->info->id) {
+	case DPLL_ID_LCPLL_810:
+		link_clock = 81000;
+		break;
+	case DPLL_ID_LCPLL_1350:
+		link_clock = 135000;
+		break;
+	case DPLL_ID_LCPLL_2700:
+		link_clock = 270000;
+		break;
+	default:
+		drm_WARN(&i915->drm, 1, "bad port clock sel\n");
+		break;
+	}
+
+	return link_clock * 2;
+}
+
+static int
+hsw_ddi_spll_compute_dpll(struct intel_atomic_state *state,
+			  struct intel_crtc *crtc)
+{
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+
+	if (drm_WARN_ON(crtc->base.dev, crtc_state->port_clock / 2 != 135000))
+		return -EINVAL;
+
+	crtc_state->dpll_hw_state.spll =
+		SPLL_PLL_ENABLE | SPLL_FREQ_1350MHz | SPLL_REF_MUXED_SSC;
+
+	return 0;
+}
+
+static struct intel_shared_dpll *
+hsw_ddi_spll_get_dpll(struct intel_atomic_state *state,
+		      struct intel_crtc *crtc)
+{
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+
+	return intel_find_shared_dpll(state, crtc, &crtc_state->dpll_hw_state,
+				      BIT(DPLL_ID_SPLL));
+}
+
+static int hsw_ddi_spll_get_freq(struct drm_i915_private *i915,
+				 const struct intel_shared_dpll *pll,
+				 const struct intel_dpll_hw_state *pll_state)
+{
+	int link_clock = 0;
+
+	switch (pll_state->spll & SPLL_FREQ_MASK) {
+	case SPLL_FREQ_810MHz:
+		link_clock = 81000;
+		break;
+	case SPLL_FREQ_1350MHz:
+		link_clock = 135000;
+		break;
+	case SPLL_FREQ_2700MHz:
+		link_clock = 270000;
+		break;
+	default:
+		drm_WARN(&i915->drm, 1, "bad spll freq\n");
+		break;
+	}
+
+	return link_clock * 2;
+}
+
+static int hsw_compute_dpll(struct intel_atomic_state *state,
+			    struct intel_crtc *crtc,
+			    struct intel_encoder *encoder)
+{
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		return hsw_ddi_wrpll_compute_dpll(state, crtc);
+	else if (intel_crtc_has_dp_encoder(crtc_state))
+		return hsw_ddi_lcpll_compute_dpll(crtc_state);
+	else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG))
+		return hsw_ddi_spll_compute_dpll(state, crtc);
+	else
+		return -EINVAL;
+}
+
+static int hsw_get_dpll(struct intel_atomic_state *state,
+			struct intel_crtc *crtc,
+			struct intel_encoder *encoder)
+{
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	struct intel_shared_dpll *pll = NULL;
+
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		pll = hsw_ddi_wrpll_get_dpll(state, crtc);
+	else if (intel_crtc_has_dp_encoder(crtc_state))
+		pll = hsw_ddi_lcpll_get_dpll(crtc_state);
+	else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG))
+		pll = hsw_ddi_spll_get_dpll(state, crtc);
+
+	if (!pll)
+		return -EINVAL;
+
+	intel_reference_shared_dpll(state, crtc,
+				    pll, &crtc_state->dpll_hw_state);
+
+	crtc_state->shared_dpll = pll;
+
+	return 0;
+}
+
+static void hsw_update_dpll_ref_clks(struct drm_i915_private *i915)
+{
+	i915->display.dpll.ref_clks.ssc = 135000;
+	/* Non-SSC is only used on non-ULT HSW. */
+	if (intel_de_read(i915, FUSE_STRAP3) & HSW_REF_CLK_SELECT)
+		i915->display.dpll.ref_clks.nssc = 24000;
+	else
+		i915->display.dpll.ref_clks.nssc = 135000;
+}
+
+static void hsw_dump_hw_state(struct drm_i915_private *dev_priv,
+			      const struct intel_dpll_hw_state *hw_state)
+{
+	drm_dbg_kms(&dev_priv->drm, "dpll_hw_state: wrpll: 0x%x spll: 0x%x\n",
+		    hw_state->wrpll, hw_state->spll);
+}
+
+static const struct intel_shared_dpll_funcs hsw_ddi_wrpll_funcs = {
+	.enable = hsw_ddi_wrpll_enable,
+	.disable = hsw_ddi_wrpll_disable,
+	.get_hw_state = hsw_ddi_wrpll_get_hw_state,
+	.get_freq = hsw_ddi_wrpll_get_freq,
+};
+
+static const struct intel_shared_dpll_funcs hsw_ddi_spll_funcs = {
+	.enable = hsw_ddi_spll_enable,
+	.disable = hsw_ddi_spll_disable,
+	.get_hw_state = hsw_ddi_spll_get_hw_state,
+	.get_freq = hsw_ddi_spll_get_freq,
+};
+
+static void hsw_ddi_lcpll_enable(struct drm_i915_private *dev_priv,
+				 struct intel_shared_dpll *pll)
+{
+}
+
+static void hsw_ddi_lcpll_disable(struct drm_i915_private *dev_priv,
+				  struct intel_shared_dpll *pll)
+{
+}
+
+static bool hsw_ddi_lcpll_get_hw_state(struct drm_i915_private *dev_priv,
+				       struct intel_shared_dpll *pll,
+				       struct intel_dpll_hw_state *hw_state)
+{
+	return true;
+}
+
+static const struct intel_shared_dpll_funcs hsw_ddi_lcpll_funcs = {
+	.enable = hsw_ddi_lcpll_enable,
+	.disable = hsw_ddi_lcpll_disable,
+	.get_hw_state = hsw_ddi_lcpll_get_hw_state,
+	.get_freq = hsw_ddi_lcpll_get_freq,
+};
+
+static const struct dpll_info hsw_plls[] = {
+	{ "WRPLL 1",    &hsw_ddi_wrpll_funcs, DPLL_ID_WRPLL1,     0 },
+	{ "WRPLL 2",    &hsw_ddi_wrpll_funcs, DPLL_ID_WRPLL2,     0 },
+	{ "SPLL",       &hsw_ddi_spll_funcs,  DPLL_ID_SPLL,       0 },
+	{ "LCPLL 810",  &hsw_ddi_lcpll_funcs, DPLL_ID_LCPLL_810,  INTEL_DPLL_ALWAYS_ON },
+	{ "LCPLL 1350", &hsw_ddi_lcpll_funcs, DPLL_ID_LCPLL_1350, INTEL_DPLL_ALWAYS_ON },
+	{ "LCPLL 2700", &hsw_ddi_lcpll_funcs, DPLL_ID_LCPLL_2700, INTEL_DPLL_ALWAYS_ON },
+	{ },
+};
+
+static const struct intel_dpll_mgr hsw_pll_mgr = {
+	.dpll_info = hsw_plls,
+	.compute_dplls = hsw_compute_dpll,
+	.get_dplls = hsw_get_dpll,
+	.put_dplls = intel_put_dpll,
+	.update_ref_clks = hsw_update_dpll_ref_clks,
+	.dump_hw_state = hsw_dump_hw_state,
+};
+
+struct skl_dpll_regs {
+	i915_reg_t ctl, cfgcr1, cfgcr2;
+};
+
+/* this array is indexed by the *shared* pll id */
+static const struct skl_dpll_regs skl_dpll_regs[4] = {
+	{
+		/* DPLL 0 */
+		.ctl = LCPLL1_CTL,
+		/* DPLL 0 doesn't support HDMI mode */
+	},
+	{
+		/* DPLL 1 */
+		.ctl = LCPLL2_CTL,
+		.cfgcr1 = DPLL_CFGCR1(SKL_DPLL1),
+		.cfgcr2 = DPLL_CFGCR2(SKL_DPLL1),
+	},
+	{
+		/* DPLL 2 */
+		.ctl = WRPLL_CTL(0),
+		.cfgcr1 = DPLL_CFGCR1(SKL_DPLL2),
+		.cfgcr2 = DPLL_CFGCR2(SKL_DPLL2),
+	},
+	{
+		/* DPLL 3 */
+		.ctl = WRPLL_CTL(1),
+		.cfgcr1 = DPLL_CFGCR1(SKL_DPLL3),
+		.cfgcr2 = DPLL_CFGCR2(SKL_DPLL3),
+	},
+};
+
+static void skl_ddi_pll_write_ctrl1(struct drm_i915_private *dev_priv,
+				    struct intel_shared_dpll *pll)
+{
+	const enum intel_dpll_id id = pll->info->id;
+	u32 val;
+
+	val = intel_de_read(dev_priv, DPLL_CTRL1);
+
+	val &= ~(DPLL_CTRL1_HDMI_MODE(id) |
+		 DPLL_CTRL1_SSC(id) |
+		 DPLL_CTRL1_LINK_RATE_MASK(id));
+	val |= pll->state.hw_state.ctrl1 << (id * 6);
+
+	intel_de_write(dev_priv, DPLL_CTRL1, val);
+	intel_de_posting_read(dev_priv, DPLL_CTRL1);
+}
+
+static void skl_ddi_pll_enable(struct drm_i915_private *dev_priv,
+			       struct intel_shared_dpll *pll)
+{
+	const struct skl_dpll_regs *regs = skl_dpll_regs;
+	const enum intel_dpll_id id = pll->info->id;
+
+	skl_ddi_pll_write_ctrl1(dev_priv, pll);
+
+	intel_de_write(dev_priv, regs[id].cfgcr1, pll->state.hw_state.cfgcr1);
+	intel_de_write(dev_priv, regs[id].cfgcr2, pll->state.hw_state.cfgcr2);
+	intel_de_posting_read(dev_priv, regs[id].cfgcr1);
+	intel_de_posting_read(dev_priv, regs[id].cfgcr2);
+
+	/* the enable bit is always bit 31 */
+	intel_de_write(dev_priv, regs[id].ctl,
+		       intel_de_read(dev_priv, regs[id].ctl) | LCPLL_PLL_ENABLE);
+
+	if (intel_de_wait_for_set(dev_priv, DPLL_STATUS, DPLL_LOCK(id), 5))
+		drm_err(&dev_priv->drm, "DPLL %d not locked\n", id);
+}
+
+static void skl_ddi_dpll0_enable(struct drm_i915_private *dev_priv,
+				 struct intel_shared_dpll *pll)
+{
+	skl_ddi_pll_write_ctrl1(dev_priv, pll);
+}
+
+static void skl_ddi_pll_disable(struct drm_i915_private *dev_priv,
+				struct intel_shared_dpll *pll)
+{
+	const struct skl_dpll_regs *regs = skl_dpll_regs;
+	const enum intel_dpll_id id = pll->info->id;
+
+	/* the enable bit is always bit 31 */
+	intel_de_write(dev_priv, regs[id].ctl,
+		       intel_de_read(dev_priv, regs[id].ctl) & ~LCPLL_PLL_ENABLE);
+	intel_de_posting_read(dev_priv, regs[id].ctl);
+}
+
+static void skl_ddi_dpll0_disable(struct drm_i915_private *dev_priv,
+				  struct intel_shared_dpll *pll)
+{
+}
+
+static bool skl_ddi_pll_get_hw_state(struct drm_i915_private *dev_priv,
+				     struct intel_shared_dpll *pll,
+				     struct intel_dpll_hw_state *hw_state)
+{
+	u32 val;
+	const struct skl_dpll_regs *regs = skl_dpll_regs;
+	const enum intel_dpll_id id = pll->info->id;
+	intel_wakeref_t wakeref;
+	bool ret;
+
+	wakeref = intel_display_power_get_if_enabled(dev_priv,
+						     POWER_DOMAIN_DISPLAY_CORE);
+	if (!wakeref)
+		return false;
+
+	ret = false;
+
+	val = intel_de_read(dev_priv, regs[id].ctl);
+	if (!(val & LCPLL_PLL_ENABLE))
+		goto out;
+
+	val = intel_de_read(dev_priv, DPLL_CTRL1);
+	hw_state->ctrl1 = (val >> (id * 6)) & 0x3f;
+
+	/* avoid reading back stale values if HDMI mode is not enabled */
+	if (val & DPLL_CTRL1_HDMI_MODE(id)) {
+		hw_state->cfgcr1 = intel_de_read(dev_priv, regs[id].cfgcr1);
+		hw_state->cfgcr2 = intel_de_read(dev_priv, regs[id].cfgcr2);
+	}
+	ret = true;
+
+out:
+	intel_display_power_put(dev_priv, POWER_DOMAIN_DISPLAY_CORE, wakeref);
+
+	return ret;
+}
+
+static bool skl_ddi_dpll0_get_hw_state(struct drm_i915_private *dev_priv,
+				       struct intel_shared_dpll *pll,
+				       struct intel_dpll_hw_state *hw_state)
+{
+	const struct skl_dpll_regs *regs = skl_dpll_regs;
+	const enum intel_dpll_id id = pll->info->id;
+	intel_wakeref_t wakeref;
+	u32 val;
+	bool ret;
+
+	wakeref = intel_display_power_get_if_enabled(dev_priv,
+						     POWER_DOMAIN_DISPLAY_CORE);
+	if (!wakeref)
+		return false;
+
+	ret = false;
+
+	/* DPLL0 is always enabled since it drives CDCLK */
+	val = intel_de_read(dev_priv, regs[id].ctl);
+	if (drm_WARN_ON(&dev_priv->drm, !(val & LCPLL_PLL_ENABLE)))
+		goto out;
+
+	val = intel_de_read(dev_priv, DPLL_CTRL1);
+	hw_state->ctrl1 = (val >> (id * 6)) & 0x3f;
+
+	ret = true;
+
+out:
+	intel_display_power_put(dev_priv, POWER_DOMAIN_DISPLAY_CORE, wakeref);
+
+	return ret;
+}
+
+struct skl_wrpll_context {
+	u64 min_deviation;		/* current minimal deviation */
+	u64 central_freq;		/* chosen central freq */
+	u64 dco_freq;			/* chosen dco freq */
+	unsigned int p;			/* chosen divider */
+};
+
+/* DCO freq must be within +1%/-6%  of the DCO central freq */
+#define SKL_DCO_MAX_PDEVIATION	100
+#define SKL_DCO_MAX_NDEVIATION	600
+
+static void skl_wrpll_try_divider(struct skl_wrpll_context *ctx,
+				  u64 central_freq,
+				  u64 dco_freq,
+				  unsigned int divider)
+{
+	u64 deviation;
+
+	deviation = div64_u64(10000 * abs_diff(dco_freq, central_freq),
+			      central_freq);
+
+	/* positive deviation */
+	if (dco_freq >= central_freq) {
+		if (deviation < SKL_DCO_MAX_PDEVIATION &&
+		    deviation < ctx->min_deviation) {
+			ctx->min_deviation = deviation;
+			ctx->central_freq = central_freq;
+			ctx->dco_freq = dco_freq;
+			ctx->p = divider;
+		}
+	/* negative deviation */
+	} else if (deviation < SKL_DCO_MAX_NDEVIATION &&
+		   deviation < ctx->min_deviation) {
+		ctx->min_deviation = deviation;
+		ctx->central_freq = central_freq;
+		ctx->dco_freq = dco_freq;
+		ctx->p = divider;
+	}
+}
+
+static void skl_wrpll_get_multipliers(unsigned int p,
+				      unsigned int *p0 /* out */,
+				      unsigned int *p1 /* out */,
+				      unsigned int *p2 /* out */)
+{
+	/* even dividers */
+	if (p % 2 == 0) {
+		unsigned int half = p / 2;
+
+		if (half == 1 || half == 2 || half == 3 || half == 5) {
+			*p0 = 2;
+			*p1 = 1;
+			*p2 = half;
+		} else if (half % 2 == 0) {
+			*p0 = 2;
+			*p1 = half / 2;
+			*p2 = 2;
+		} else if (half % 3 == 0) {
+			*p0 = 3;
+			*p1 = half / 3;
+			*p2 = 2;
+		} else if (half % 7 == 0) {
+			*p0 = 7;
+			*p1 = half / 7;
+			*p2 = 2;
+		}
+	} else if (p == 3 || p == 9) {  /* 3, 5, 7, 9, 15, 21, 35 */
+		*p0 = 3;
+		*p1 = 1;
+		*p2 = p / 3;
+	} else if (p == 5 || p == 7) {
+		*p0 = p;
+		*p1 = 1;
+		*p2 = 1;
+	} else if (p == 15) {
+		*p0 = 3;
+		*p1 = 1;
+		*p2 = 5;
+	} else if (p == 21) {
+		*p0 = 7;
+		*p1 = 1;
+		*p2 = 3;
+	} else if (p == 35) {
+		*p0 = 7;
+		*p1 = 1;
+		*p2 = 5;
+	}
+}
+
+struct skl_wrpll_params {
+	u32 dco_fraction;
+	u32 dco_integer;
+	u32 qdiv_ratio;
+	u32 qdiv_mode;
+	u32 kdiv;
+	u32 pdiv;
+	u32 central_freq;
+};
+
+static void skl_wrpll_params_populate(struct skl_wrpll_params *params,
+				      u64 afe_clock,
+				      int ref_clock,
+				      u64 central_freq,
+				      u32 p0, u32 p1, u32 p2)
+{
+	u64 dco_freq;
+
+	switch (central_freq) {
+	case 9600000000ULL:
+		params->central_freq = 0;
+		break;
+	case 9000000000ULL:
+		params->central_freq = 1;
+		break;
+	case 8400000000ULL:
+		params->central_freq = 3;
+	}
+
+	switch (p0) {
+	case 1:
+		params->pdiv = 0;
+		break;
+	case 2:
+		params->pdiv = 1;
+		break;
+	case 3:
+		params->pdiv = 2;
+		break;
+	case 7:
+		params->pdiv = 4;
+		break;
+	default:
+		WARN(1, "Incorrect PDiv\n");
+	}
+
+	switch (p2) {
+	case 5:
+		params->kdiv = 0;
+		break;
+	case 2:
+		params->kdiv = 1;
+		break;
+	case 3:
+		params->kdiv = 2;
+		break;
+	case 1:
+		params->kdiv = 3;
+		break;
+	default:
+		WARN(1, "Incorrect KDiv\n");
+	}
+
+	params->qdiv_ratio = p1;
+	params->qdiv_mode = (params->qdiv_ratio == 1) ? 0 : 1;
+
+	dco_freq = p0 * p1 * p2 * afe_clock;
+
+	/*
+	 * Intermediate values are in Hz.
+	 * Divide by MHz to match bsepc
+	 */
+	params->dco_integer = div_u64(dco_freq, ref_clock * KHz(1));
+	params->dco_fraction =
+		div_u64((div_u64(dco_freq, ref_clock / KHz(1)) -
+			 params->dco_integer * MHz(1)) * 0x8000, MHz(1));
+}
+
+static int
+skl_ddi_calculate_wrpll(int clock /* in Hz */,
+			int ref_clock,
+			struct skl_wrpll_params *wrpll_params)
+{
+	static const u64 dco_central_freq[3] = { 8400000000ULL,
+						 9000000000ULL,
+						 9600000000ULL };
+	static const u8 even_dividers[] = {  4,  6,  8, 10, 12, 14, 16, 18, 20,
+					    24, 28, 30, 32, 36, 40, 42, 44,
+					    48, 52, 54, 56, 60, 64, 66, 68,
+					    70, 72, 76, 78, 80, 84, 88, 90,
+					    92, 96, 98 };
+	static const u8 odd_dividers[] = { 3, 5, 7, 9, 15, 21, 35 };
+	static const struct {
+		const u8 *list;
+		int n_dividers;
+	} dividers[] = {
+		{ even_dividers, ARRAY_SIZE(even_dividers) },
+		{ odd_dividers, ARRAY_SIZE(odd_dividers) },
+	};
+	struct skl_wrpll_context ctx = {
+		.min_deviation = U64_MAX,
+	};
+	unsigned int dco, d, i;
+	unsigned int p0, p1, p2;
+	u64 afe_clock = clock * 5; /* AFE Clock is 5x Pixel clock */
+
+	for (d = 0; d < ARRAY_SIZE(dividers); d++) {
+		for (dco = 0; dco < ARRAY_SIZE(dco_central_freq); dco++) {
+			for (i = 0; i < dividers[d].n_dividers; i++) {
+				unsigned int p = dividers[d].list[i];
+				u64 dco_freq = p * afe_clock;
+
+				skl_wrpll_try_divider(&ctx,
+						      dco_central_freq[dco],
+						      dco_freq,
+						      p);
+				/*
+				 * Skip the remaining dividers if we're sure to
+				 * have found the definitive divider, we can't
+				 * improve a 0 deviation.
+				 */
+				if (ctx.min_deviation == 0)
+					goto skip_remaining_dividers;
+			}
+		}
+
+skip_remaining_dividers:
+		/*
+		 * If a solution is found with an even divider, prefer
+		 * this one.
+		 */
+		if (d == 0 && ctx.p)
+			break;
+	}
+
+	if (!ctx.p)
+		return -EINVAL;
+
+	/*
+	 * gcc incorrectly analyses that these can be used without being
+	 * initialized. To be fair, it's hard to guess.
+	 */
+	p0 = p1 = p2 = 0;
+	skl_wrpll_get_multipliers(ctx.p, &p0, &p1, &p2);
+	skl_wrpll_params_populate(wrpll_params, afe_clock, ref_clock,
+				  ctx.central_freq, p0, p1, p2);
+
+	return 0;
+}
+
+static int skl_ddi_wrpll_get_freq(struct drm_i915_private *i915,
+				  const struct intel_shared_dpll *pll,
+				  const struct intel_dpll_hw_state *pll_state)
+{
+	int ref_clock = i915->display.dpll.ref_clks.nssc;
+	u32 p0, p1, p2, dco_freq;
+
+	p0 = pll_state->cfgcr2 & DPLL_CFGCR2_PDIV_MASK;
+	p2 = pll_state->cfgcr2 & DPLL_CFGCR2_KDIV_MASK;
+
+	if (pll_state->cfgcr2 &  DPLL_CFGCR2_QDIV_MODE(1))
+		p1 = (pll_state->cfgcr2 & DPLL_CFGCR2_QDIV_RATIO_MASK) >> 8;
+	else
+		p1 = 1;
+
+
+	switch (p0) {
+	case DPLL_CFGCR2_PDIV_1:
+		p0 = 1;
+		break;
+	case DPLL_CFGCR2_PDIV_2:
+		p0 = 2;
+		break;
+	case DPLL_CFGCR2_PDIV_3:
+		p0 = 3;
+		break;
+	case DPLL_CFGCR2_PDIV_7_INVALID:
+		/*
+		 * Incorrect ASUS-Z170M BIOS setting, the HW seems to ignore bit#0,
+		 * handling it the same way as PDIV_7.
+		 */
+		drm_dbg_kms(&i915->drm, "Invalid WRPLL PDIV divider value, fixing it.\n");
+		fallthrough;
+	case DPLL_CFGCR2_PDIV_7:
+		p0 = 7;
+		break;
+	default:
+		MISSING_CASE(p0);
+		return 0;
+	}
+
+	switch (p2) {
+	case DPLL_CFGCR2_KDIV_5:
+		p2 = 5;
+		break;
+	case DPLL_CFGCR2_KDIV_2:
+		p2 = 2;
+		break;
+	case DPLL_CFGCR2_KDIV_3:
+		p2 = 3;
+		break;
+	case DPLL_CFGCR2_KDIV_1:
+		p2 = 1;
+		break;
+	default:
+		MISSING_CASE(p2);
+		return 0;
+	}
+
+	dco_freq = (pll_state->cfgcr1 & DPLL_CFGCR1_DCO_INTEGER_MASK) *
+		   ref_clock;
+
+	dco_freq += ((pll_state->cfgcr1 & DPLL_CFGCR1_DCO_FRACTION_MASK) >> 9) *
+		    ref_clock / 0x8000;
+
+	if (drm_WARN_ON(&i915->drm, p0 == 0 || p1 == 0 || p2 == 0))
+		return 0;
+
+	return dco_freq / (p0 * p1 * p2 * 5);
+}
+
+static int skl_ddi_hdmi_pll_dividers(struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+	struct skl_wrpll_params wrpll_params = {};
+	u32 ctrl1, cfgcr1, cfgcr2;
+	int ret;
+
+	/*
+	 * See comment in intel_dpll_hw_state to understand why we always use 0
+	 * as the DPLL id in this function.
+	 */
+	ctrl1 = DPLL_CTRL1_OVERRIDE(0);
+
+	ctrl1 |= DPLL_CTRL1_HDMI_MODE(0);
+
+	ret = skl_ddi_calculate_wrpll(crtc_state->port_clock * 1000,
+				      i915->display.dpll.ref_clks.nssc, &wrpll_params);
+	if (ret)
+		return ret;
+
+	cfgcr1 = DPLL_CFGCR1_FREQ_ENABLE |
+		DPLL_CFGCR1_DCO_FRACTION(wrpll_params.dco_fraction) |
+		wrpll_params.dco_integer;
+
+	cfgcr2 = DPLL_CFGCR2_QDIV_RATIO(wrpll_params.qdiv_ratio) |
+		DPLL_CFGCR2_QDIV_MODE(wrpll_params.qdiv_mode) |
+		DPLL_CFGCR2_KDIV(wrpll_params.kdiv) |
+		DPLL_CFGCR2_PDIV(wrpll_params.pdiv) |
+		wrpll_params.central_freq;
+
+	crtc_state->dpll_hw_state.ctrl1 = ctrl1;
+	crtc_state->dpll_hw_state.cfgcr1 = cfgcr1;
+	crtc_state->dpll_hw_state.cfgcr2 = cfgcr2;
+
+	crtc_state->port_clock = skl_ddi_wrpll_get_freq(i915, NULL,
+							&crtc_state->dpll_hw_state);
+
+	return 0;
+}
+
+static int
+skl_ddi_dp_set_dpll_hw_state(struct intel_crtc_state *crtc_state)
+{
+	u32 ctrl1;
+
+	/*
+	 * See comment in intel_dpll_hw_state to understand why we always use 0
+	 * as the DPLL id in this function.
+	 */
+	ctrl1 = DPLL_CTRL1_OVERRIDE(0);
+	switch (crtc_state->port_clock / 2) {
+	case 81000:
+		ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_810, 0);
+		break;
+	case 135000:
+		ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1350, 0);
+		break;
+	case 270000:
+		ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_2700, 0);
+		break;
+		/* eDP 1.4 rates */
+	case 162000:
+		ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1620, 0);
+		break;
+	case 108000:
+		ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1080, 0);
+		break;
+	case 216000:
+		ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_2160, 0);
+		break;
+	}
+
+	crtc_state->dpll_hw_state.ctrl1 = ctrl1;
+
+	return 0;
+}
+
+static int skl_ddi_lcpll_get_freq(struct drm_i915_private *i915,
+				  const struct intel_shared_dpll *pll,
+				  const struct intel_dpll_hw_state *pll_state)
+{
+	int link_clock = 0;
+
+	switch ((pll_state->ctrl1 & DPLL_CTRL1_LINK_RATE_MASK(0)) >>
+		DPLL_CTRL1_LINK_RATE_SHIFT(0)) {
+	case DPLL_CTRL1_LINK_RATE_810:
+		link_clock = 81000;
+		break;
+	case DPLL_CTRL1_LINK_RATE_1080:
+		link_clock = 108000;
+		break;
+	case DPLL_CTRL1_LINK_RATE_1350:
+		link_clock = 135000;
+		break;
+	case DPLL_CTRL1_LINK_RATE_1620:
+		link_clock = 162000;
+		break;
+	case DPLL_CTRL1_LINK_RATE_2160:
+		link_clock = 216000;
+		break;
+	case DPLL_CTRL1_LINK_RATE_2700:
+		link_clock = 270000;
+		break;
+	default:
+		drm_WARN(&i915->drm, 1, "Unsupported link rate\n");
+		break;
+	}
+
+	return link_clock * 2;
+}
+
+static int skl_compute_dpll(struct intel_atomic_state *state,
+			    struct intel_crtc *crtc,
+			    struct intel_encoder *encoder)
+{
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		return skl_ddi_hdmi_pll_dividers(crtc_state);
+	else if (intel_crtc_has_dp_encoder(crtc_state))
+		return skl_ddi_dp_set_dpll_hw_state(crtc_state);
+	else
+		return -EINVAL;
+}
+
+static int skl_get_dpll(struct intel_atomic_state *state,
+			struct intel_crtc *crtc,
+			struct intel_encoder *encoder)
+{
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	struct intel_shared_dpll *pll;
+
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP))
+		pll = intel_find_shared_dpll(state, crtc,
+					     &crtc_state->dpll_hw_state,
+					     BIT(DPLL_ID_SKL_DPLL0));
+	else
+		pll = intel_find_shared_dpll(state, crtc,
+					     &crtc_state->dpll_hw_state,
+					     BIT(DPLL_ID_SKL_DPLL3) |
+					     BIT(DPLL_ID_SKL_DPLL2) |
+					     BIT(DPLL_ID_SKL_DPLL1));
+	if (!pll)
+		return -EINVAL;
+
+	intel_reference_shared_dpll(state, crtc,
+				    pll, &crtc_state->dpll_hw_state);
+
+	crtc_state->shared_dpll = pll;
+
+	return 0;
+}
+
+static int skl_ddi_pll_get_freq(struct drm_i915_private *i915,
+				const struct intel_shared_dpll *pll,
+				const struct intel_dpll_hw_state *pll_state)
+{
+	/*
+	 * ctrl1 register is already shifted for each pll, just use 0 to get
+	 * the internal shift for each field
+	 */
+	if (pll_state->ctrl1 & DPLL_CTRL1_HDMI_MODE(0))
+		return skl_ddi_wrpll_get_freq(i915, pll, pll_state);
+	else
+		return skl_ddi_lcpll_get_freq(i915, pll, pll_state);
+}
+
+static void skl_update_dpll_ref_clks(struct drm_i915_private *i915)
+{
+	/* No SSC ref */
+	i915->display.dpll.ref_clks.nssc = i915->display.cdclk.hw.ref;
+}
+
+static void skl_dump_hw_state(struct drm_i915_private *dev_priv,
+			      const struct intel_dpll_hw_state *hw_state)
+{
+	drm_dbg_kms(&dev_priv->drm, "dpll_hw_state: "
+		      "ctrl1: 0x%x, cfgcr1: 0x%x, cfgcr2: 0x%x\n",
+		      hw_state->ctrl1,
+		      hw_state->cfgcr1,
+		      hw_state->cfgcr2);
+}
+
+static const struct intel_shared_dpll_funcs skl_ddi_pll_funcs = {
+	.enable = skl_ddi_pll_enable,
+	.disable = skl_ddi_pll_disable,
+	.get_hw_state = skl_ddi_pll_get_hw_state,
+	.get_freq = skl_ddi_pll_get_freq,
+};
+
+static const struct intel_shared_dpll_funcs skl_ddi_dpll0_funcs = {
+	.enable = skl_ddi_dpll0_enable,
+	.disable = skl_ddi_dpll0_disable,
+	.get_hw_state = skl_ddi_dpll0_get_hw_state,
+	.get_freq = skl_ddi_pll_get_freq,
+};
+
+static const struct dpll_info skl_plls[] = {
+	{ "DPLL 0", &skl_ddi_dpll0_funcs, DPLL_ID_SKL_DPLL0, INTEL_DPLL_ALWAYS_ON },
+	{ "DPLL 1", &skl_ddi_pll_funcs,   DPLL_ID_SKL_DPLL1, 0 },
+	{ "DPLL 2", &skl_ddi_pll_funcs,   DPLL_ID_SKL_DPLL2, 0 },
+	{ "DPLL 3", &skl_ddi_pll_funcs,   DPLL_ID_SKL_DPLL3, 0 },
+	{ },
+};
+
+static const struct intel_dpll_mgr skl_pll_mgr = {
+	.dpll_info = skl_plls,
+	.compute_dplls = skl_compute_dpll,
+	.get_dplls = skl_get_dpll,
+	.put_dplls = intel_put_dpll,
+	.update_ref_clks = skl_update_dpll_ref_clks,
+	.dump_hw_state = skl_dump_hw_state,
+};
+
+static void bxt_ddi_pll_enable(struct drm_i915_private *dev_priv,
+				struct intel_shared_dpll *pll)
+{
+	u32 temp;
+	enum port port = (enum port)pll->info->id; /* 1:1 port->PLL mapping */
+	enum dpio_phy phy;
+	enum dpio_channel ch;
+
+	bxt_port_to_phy_channel(dev_priv, port, &phy, &ch);
+
+	/* Non-SSC reference */
+	temp = intel_de_read(dev_priv, BXT_PORT_PLL_ENABLE(port));
+	temp |= PORT_PLL_REF_SEL;
+	intel_de_write(dev_priv, BXT_PORT_PLL_ENABLE(port), temp);
+
+	if (IS_GEMINILAKE(dev_priv)) {
+		temp = intel_de_read(dev_priv, BXT_PORT_PLL_ENABLE(port));
+		temp |= PORT_PLL_POWER_ENABLE;
+		intel_de_write(dev_priv, BXT_PORT_PLL_ENABLE(port), temp);
+
+		if (wait_for_us((intel_de_read(dev_priv, BXT_PORT_PLL_ENABLE(port)) &
+				 PORT_PLL_POWER_STATE), 200))
+			drm_err(&dev_priv->drm,
+				"Power state not set for PLL:%d\n", port);
+	}
+
+	/* Disable 10 bit clock */
+	temp = intel_de_read(dev_priv, BXT_PORT_PLL_EBB_4(phy, ch));
+	temp &= ~PORT_PLL_10BIT_CLK_ENABLE;
+	intel_de_write(dev_priv, BXT_PORT_PLL_EBB_4(phy, ch), temp);
+
+	/* Write P1 & P2 */
+	temp = intel_de_read(dev_priv, BXT_PORT_PLL_EBB_0(phy, ch));
+	temp &= ~(PORT_PLL_P1_MASK | PORT_PLL_P2_MASK);
+	temp |= pll->state.hw_state.ebb0;
+	intel_de_write(dev_priv, BXT_PORT_PLL_EBB_0(phy, ch), temp);
+
+	/* Write M2 integer */
+	temp = intel_de_read(dev_priv, BXT_PORT_PLL(phy, ch, 0));
+	temp &= ~PORT_PLL_M2_INT_MASK;
+	temp |= pll->state.hw_state.pll0;
+	intel_de_write(dev_priv, BXT_PORT_PLL(phy, ch, 0), temp);
+
+	/* Write N */
+	temp = intel_de_read(dev_priv, BXT_PORT_PLL(phy, ch, 1));
+	temp &= ~PORT_PLL_N_MASK;
+	temp |= pll->state.hw_state.pll1;
+	intel_de_write(dev_priv, BXT_PORT_PLL(phy, ch, 1), temp);
+
+	/* Write M2 fraction */
+	temp = intel_de_read(dev_priv, BXT_PORT_PLL(phy, ch, 2));
+	temp &= ~PORT_PLL_M2_FRAC_MASK;
+	temp |= pll->state.hw_state.pll2;
+	intel_de_write(dev_priv, BXT_PORT_PLL(phy, ch, 2), temp);
+
+	/* Write M2 fraction enable */
+	temp = intel_de_read(dev_priv, BXT_PORT_PLL(phy, ch, 3));
+	temp &= ~PORT_PLL_M2_FRAC_ENABLE;
+	temp |= pll->state.hw_state.pll3;
+	intel_de_write(dev_priv, BXT_PORT_PLL(phy, ch, 3), temp);
+
+	/* Write coeff */
+	temp = intel_de_read(dev_priv, BXT_PORT_PLL(phy, ch, 6));
+	temp &= ~PORT_PLL_PROP_COEFF_MASK;
+	temp &= ~PORT_PLL_INT_COEFF_MASK;
+	temp &= ~PORT_PLL_GAIN_CTL_MASK;
+	temp |= pll->state.hw_state.pll6;
+	intel_de_write(dev_priv, BXT_PORT_PLL(phy, ch, 6), temp);
+
+	/* Write calibration val */
+	temp = intel_de_read(dev_priv, BXT_PORT_PLL(phy, ch, 8));
+	temp &= ~PORT_PLL_TARGET_CNT_MASK;
+	temp |= pll->state.hw_state.pll8;
+	intel_de_write(dev_priv, BXT_PORT_PLL(phy, ch, 8), temp);
+
+	temp = intel_de_read(dev_priv, BXT_PORT_PLL(phy, ch, 9));
+	temp &= ~PORT_PLL_LOCK_THRESHOLD_MASK;
+	temp |= pll->state.hw_state.pll9;
+	intel_de_write(dev_priv, BXT_PORT_PLL(phy, ch, 9), temp);
+
+	temp = intel_de_read(dev_priv, BXT_PORT_PLL(phy, ch, 10));
+	temp &= ~PORT_PLL_DCO_AMP_OVR_EN_H;
+	temp &= ~PORT_PLL_DCO_AMP_MASK;
+	temp |= pll->state.hw_state.pll10;
+	intel_de_write(dev_priv, BXT_PORT_PLL(phy, ch, 10), temp);
+
+	/* Recalibrate with new settings */
+	temp = intel_de_read(dev_priv, BXT_PORT_PLL_EBB_4(phy, ch));
+	temp |= PORT_PLL_RECALIBRATE;
+	intel_de_write(dev_priv, BXT_PORT_PLL_EBB_4(phy, ch), temp);
+	temp &= ~PORT_PLL_10BIT_CLK_ENABLE;
+	temp |= pll->state.hw_state.ebb4;
+	intel_de_write(dev_priv, BXT_PORT_PLL_EBB_4(phy, ch), temp);
+
+	/* Enable PLL */
+	temp = intel_de_read(dev_priv, BXT_PORT_PLL_ENABLE(port));
+	temp |= PORT_PLL_ENABLE;
+	intel_de_write(dev_priv, BXT_PORT_PLL_ENABLE(port), temp);
+	intel_de_posting_read(dev_priv, BXT_PORT_PLL_ENABLE(port));
+
+	if (wait_for_us((intel_de_read(dev_priv, BXT_PORT_PLL_ENABLE(port)) & PORT_PLL_LOCK),
+			200))
+		drm_err(&dev_priv->drm, "PLL %d not locked\n", port);
+
+	if (IS_GEMINILAKE(dev_priv)) {
+		temp = intel_de_read(dev_priv, BXT_PORT_TX_DW5_LN0(phy, ch));
+		temp |= DCC_DELAY_RANGE_2;
+		intel_de_write(dev_priv, BXT_PORT_TX_DW5_GRP(phy, ch), temp);
+	}
+
+	/*
+	 * While we write to the group register to program all lanes at once we
+	 * can read only lane registers and we pick lanes 0/1 for that.
+	 */
+	temp = intel_de_read(dev_priv, BXT_PORT_PCS_DW12_LN01(phy, ch));
+	temp &= ~LANE_STAGGER_MASK;
+	temp &= ~LANESTAGGER_STRAP_OVRD;
+	temp |= pll->state.hw_state.pcsdw12;
+	intel_de_write(dev_priv, BXT_PORT_PCS_DW12_GRP(phy, ch), temp);
+}
+
+static void bxt_ddi_pll_disable(struct drm_i915_private *dev_priv,
+					struct intel_shared_dpll *pll)
+{
+	enum port port = (enum port)pll->info->id; /* 1:1 port->PLL mapping */
+	u32 temp;
+
+	temp = intel_de_read(dev_priv, BXT_PORT_PLL_ENABLE(port));
+	temp &= ~PORT_PLL_ENABLE;
+	intel_de_write(dev_priv, BXT_PORT_PLL_ENABLE(port), temp);
+	intel_de_posting_read(dev_priv, BXT_PORT_PLL_ENABLE(port));
+
+	if (IS_GEMINILAKE(dev_priv)) {
+		temp = intel_de_read(dev_priv, BXT_PORT_PLL_ENABLE(port));
+		temp &= ~PORT_PLL_POWER_ENABLE;
+		intel_de_write(dev_priv, BXT_PORT_PLL_ENABLE(port), temp);
+
+		if (wait_for_us(!(intel_de_read(dev_priv, BXT_PORT_PLL_ENABLE(port)) &
+				  PORT_PLL_POWER_STATE), 200))
+			drm_err(&dev_priv->drm,
+				"Power state not reset for PLL:%d\n", port);
+	}
+}
+
+static bool bxt_ddi_pll_get_hw_state(struct drm_i915_private *dev_priv,
+					struct intel_shared_dpll *pll,
+					struct intel_dpll_hw_state *hw_state)
+{
+	enum port port = (enum port)pll->info->id; /* 1:1 port->PLL mapping */
+	intel_wakeref_t wakeref;
+	enum dpio_phy phy;
+	enum dpio_channel ch;
+	u32 val;
+	bool ret;
+
+	bxt_port_to_phy_channel(dev_priv, port, &phy, &ch);
+
+	wakeref = intel_display_power_get_if_enabled(dev_priv,
+						     POWER_DOMAIN_DISPLAY_CORE);
+	if (!wakeref)
+		return false;
+
+	ret = false;
+
+	val = intel_de_read(dev_priv, BXT_PORT_PLL_ENABLE(port));
+	if (!(val & PORT_PLL_ENABLE))
+		goto out;
+
+	hw_state->ebb0 = intel_de_read(dev_priv, BXT_PORT_PLL_EBB_0(phy, ch));
+	hw_state->ebb0 &= PORT_PLL_P1_MASK | PORT_PLL_P2_MASK;
+
+	hw_state->ebb4 = intel_de_read(dev_priv, BXT_PORT_PLL_EBB_4(phy, ch));
+	hw_state->ebb4 &= PORT_PLL_10BIT_CLK_ENABLE;
+
+	hw_state->pll0 = intel_de_read(dev_priv, BXT_PORT_PLL(phy, ch, 0));
+	hw_state->pll0 &= PORT_PLL_M2_INT_MASK;
+
+	hw_state->pll1 = intel_de_read(dev_priv, BXT_PORT_PLL(phy, ch, 1));
+	hw_state->pll1 &= PORT_PLL_N_MASK;
+
+	hw_state->pll2 = intel_de_read(dev_priv, BXT_PORT_PLL(phy, ch, 2));
+	hw_state->pll2 &= PORT_PLL_M2_FRAC_MASK;
+
+	hw_state->pll3 = intel_de_read(dev_priv, BXT_PORT_PLL(phy, ch, 3));
+	hw_state->pll3 &= PORT_PLL_M2_FRAC_ENABLE;
+
+	hw_state->pll6 = intel_de_read(dev_priv, BXT_PORT_PLL(phy, ch, 6));
+	hw_state->pll6 &= PORT_PLL_PROP_COEFF_MASK |
+			  PORT_PLL_INT_COEFF_MASK |
+			  PORT_PLL_GAIN_CTL_MASK;
+
+	hw_state->pll8 = intel_de_read(dev_priv, BXT_PORT_PLL(phy, ch, 8));
+	hw_state->pll8 &= PORT_PLL_TARGET_CNT_MASK;
+
+	hw_state->pll9 = intel_de_read(dev_priv, BXT_PORT_PLL(phy, ch, 9));
+	hw_state->pll9 &= PORT_PLL_LOCK_THRESHOLD_MASK;
+
+	hw_state->pll10 = intel_de_read(dev_priv, BXT_PORT_PLL(phy, ch, 10));
+	hw_state->pll10 &= PORT_PLL_DCO_AMP_OVR_EN_H |
+			   PORT_PLL_DCO_AMP_MASK;
+
+	/*
+	 * While we write to the group register to program all lanes at once we
+	 * can read only lane registers. We configure all lanes the same way, so
+	 * here just read out lanes 0/1 and output a note if lanes 2/3 differ.
+	 */
+	hw_state->pcsdw12 = intel_de_read(dev_priv,
+					  BXT_PORT_PCS_DW12_LN01(phy, ch));
+	if (intel_de_read(dev_priv, BXT_PORT_PCS_DW12_LN23(phy, ch)) != hw_state->pcsdw12)
+		drm_dbg(&dev_priv->drm,
+			"lane stagger config different for lane 01 (%08x) and 23 (%08x)\n",
+			hw_state->pcsdw12,
+			intel_de_read(dev_priv,
+				      BXT_PORT_PCS_DW12_LN23(phy, ch)));
+	hw_state->pcsdw12 &= LANE_STAGGER_MASK | LANESTAGGER_STRAP_OVRD;
+
+	ret = true;
+
+out:
+	intel_display_power_put(dev_priv, POWER_DOMAIN_DISPLAY_CORE, wakeref);
+
+	return ret;
+}
+
+/* pre-calculated values for DP linkrates */
+static const struct dpll bxt_dp_clk_val[] = {
+	/* m2 is .22 binary fixed point */
+	{ .dot = 162000, .p1 = 4, .p2 = 2, .n = 1, .m1 = 2, .m2 = 0x819999a /* 32.4 */ },
+	{ .dot = 270000, .p1 = 4, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 /* 27.0 */ },
+	{ .dot = 540000, .p1 = 2, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 /* 27.0 */ },
+	{ .dot = 216000, .p1 = 3, .p2 = 2, .n = 1, .m1 = 2, .m2 = 0x819999a /* 32.4 */ },
+	{ .dot = 243000, .p1 = 4, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6133333 /* 24.3 */ },
+	{ .dot = 324000, .p1 = 4, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x819999a /* 32.4 */ },
+	{ .dot = 432000, .p1 = 3, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x819999a /* 32.4 */ },
+};
+
+static int
+bxt_ddi_hdmi_pll_dividers(struct intel_crtc_state *crtc_state,
+			  struct dpll *clk_div)
+{
+	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+
+	/* Calculate HDMI div */
+	/*
+	 * FIXME: tie the following calculation into
+	 * i9xx_crtc_compute_clock
+	 */
+	if (!bxt_find_best_dpll(crtc_state, clk_div))
+		return -EINVAL;
+
+	drm_WARN_ON(&i915->drm, clk_div->m1 != 2);
+
+	return 0;
+}
+
+static void bxt_ddi_dp_pll_dividers(struct intel_crtc_state *crtc_state,
+				    struct dpll *clk_div)
+{
+	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+	int i;
+
+	*clk_div = bxt_dp_clk_val[0];
+	for (i = 0; i < ARRAY_SIZE(bxt_dp_clk_val); ++i) {
+		if (crtc_state->port_clock == bxt_dp_clk_val[i].dot) {
+			*clk_div = bxt_dp_clk_val[i];
+			break;
+		}
+	}
+
+	chv_calc_dpll_params(i915->display.dpll.ref_clks.nssc, clk_div);
+
+	drm_WARN_ON(&i915->drm, clk_div->vco == 0 ||
+		    clk_div->dot != crtc_state->port_clock);
+}
+
+static int bxt_ddi_set_dpll_hw_state(struct intel_crtc_state *crtc_state,
+				     const struct dpll *clk_div)
+{
+	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+	struct intel_dpll_hw_state *dpll_hw_state = &crtc_state->dpll_hw_state;
+	int clock = crtc_state->port_clock;
+	int vco = clk_div->vco;
+	u32 prop_coef, int_coef, gain_ctl, targ_cnt;
+	u32 lanestagger;
+
+	if (vco >= 6200000 && vco <= 6700000) {
+		prop_coef = 4;
+		int_coef = 9;
+		gain_ctl = 3;
+		targ_cnt = 8;
+	} else if ((vco > 5400000 && vco < 6200000) ||
+			(vco >= 4800000 && vco < 5400000)) {
+		prop_coef = 5;
+		int_coef = 11;
+		gain_ctl = 3;
+		targ_cnt = 9;
+	} else if (vco == 5400000) {
+		prop_coef = 3;
+		int_coef = 8;
+		gain_ctl = 1;
+		targ_cnt = 9;
+	} else {
+		drm_err(&i915->drm, "Invalid VCO\n");
+		return -EINVAL;
+	}
+
+	if (clock > 270000)
+		lanestagger = 0x18;
+	else if (clock > 135000)
+		lanestagger = 0x0d;
+	else if (clock > 67000)
+		lanestagger = 0x07;
+	else if (clock > 33000)
+		lanestagger = 0x04;
+	else
+		lanestagger = 0x02;
+
+	dpll_hw_state->ebb0 = PORT_PLL_P1(clk_div->p1) | PORT_PLL_P2(clk_div->p2);
+	dpll_hw_state->pll0 = PORT_PLL_M2_INT(clk_div->m2 >> 22);
+	dpll_hw_state->pll1 = PORT_PLL_N(clk_div->n);
+	dpll_hw_state->pll2 = PORT_PLL_M2_FRAC(clk_div->m2 & 0x3fffff);
+
+	if (clk_div->m2 & 0x3fffff)
+		dpll_hw_state->pll3 = PORT_PLL_M2_FRAC_ENABLE;
+
+	dpll_hw_state->pll6 = PORT_PLL_PROP_COEFF(prop_coef) |
+		PORT_PLL_INT_COEFF(int_coef) |
+		PORT_PLL_GAIN_CTL(gain_ctl);
+
+	dpll_hw_state->pll8 = PORT_PLL_TARGET_CNT(targ_cnt);
+
+	dpll_hw_state->pll9 = PORT_PLL_LOCK_THRESHOLD(5);
+
+	dpll_hw_state->pll10 = PORT_PLL_DCO_AMP(15) |
+		PORT_PLL_DCO_AMP_OVR_EN_H;
+
+	dpll_hw_state->ebb4 = PORT_PLL_10BIT_CLK_ENABLE;
+
+	dpll_hw_state->pcsdw12 = LANESTAGGER_STRAP_OVRD | lanestagger;
+
+	return 0;
+}
+
+static int bxt_ddi_pll_get_freq(struct drm_i915_private *i915,
+				const struct intel_shared_dpll *pll,
+				const struct intel_dpll_hw_state *pll_state)
+{
+	struct dpll clock;
+
+	clock.m1 = 2;
+	clock.m2 = REG_FIELD_GET(PORT_PLL_M2_INT_MASK, pll_state->pll0) << 22;
+	if (pll_state->pll3 & PORT_PLL_M2_FRAC_ENABLE)
+		clock.m2 |= REG_FIELD_GET(PORT_PLL_M2_FRAC_MASK, pll_state->pll2);
+	clock.n = REG_FIELD_GET(PORT_PLL_N_MASK, pll_state->pll1);
+	clock.p1 = REG_FIELD_GET(PORT_PLL_P1_MASK, pll_state->ebb0);
+	clock.p2 = REG_FIELD_GET(PORT_PLL_P2_MASK, pll_state->ebb0);
+
+	return chv_calc_dpll_params(i915->display.dpll.ref_clks.nssc, &clock);
+}
+
+static int
+bxt_ddi_dp_set_dpll_hw_state(struct intel_crtc_state *crtc_state)
+{
+	struct dpll clk_div = {};
+
+	bxt_ddi_dp_pll_dividers(crtc_state, &clk_div);
+
+	return bxt_ddi_set_dpll_hw_state(crtc_state, &clk_div);
+}
+
+static int
+bxt_ddi_hdmi_set_dpll_hw_state(struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+	struct dpll clk_div = {};
+	int ret;
+
+	bxt_ddi_hdmi_pll_dividers(crtc_state, &clk_div);
+
+	ret = bxt_ddi_set_dpll_hw_state(crtc_state, &clk_div);
+	if (ret)
+		return ret;
+
+	crtc_state->port_clock = bxt_ddi_pll_get_freq(i915, NULL,
+						      &crtc_state->dpll_hw_state);
+
+	return 0;
+}
+
+static int bxt_compute_dpll(struct intel_atomic_state *state,
+			    struct intel_crtc *crtc,
+			    struct intel_encoder *encoder)
+{
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		return bxt_ddi_hdmi_set_dpll_hw_state(crtc_state);
+	else if (intel_crtc_has_dp_encoder(crtc_state))
+		return bxt_ddi_dp_set_dpll_hw_state(crtc_state);
+	else
+		return -EINVAL;
+}
+
+static int bxt_get_dpll(struct intel_atomic_state *state,
+			struct intel_crtc *crtc,
+			struct intel_encoder *encoder)
+{
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	struct intel_shared_dpll *pll;
+	enum intel_dpll_id id;
+
+	/* 1:1 mapping between ports and PLLs */
+	id = (enum intel_dpll_id) encoder->port;
+	pll = intel_get_shared_dpll_by_id(dev_priv, id);
+
+	drm_dbg_kms(&dev_priv->drm, "[CRTC:%d:%s] using pre-allocated %s\n",
+		    crtc->base.base.id, crtc->base.name, pll->info->name);
+
+	intel_reference_shared_dpll(state, crtc,
+				    pll, &crtc_state->dpll_hw_state);
+
+	crtc_state->shared_dpll = pll;
+
+	return 0;
+}
+
+static void bxt_update_dpll_ref_clks(struct drm_i915_private *i915)
+{
+	i915->display.dpll.ref_clks.ssc = 100000;
+	i915->display.dpll.ref_clks.nssc = 100000;
+	/* DSI non-SSC ref 19.2MHz */
+}
+
+static void bxt_dump_hw_state(struct drm_i915_private *dev_priv,
+			      const struct intel_dpll_hw_state *hw_state)
+{
+	drm_dbg_kms(&dev_priv->drm, "dpll_hw_state: ebb0: 0x%x, ebb4: 0x%x,"
+		    "pll0: 0x%x, pll1: 0x%x, pll2: 0x%x, pll3: 0x%x, "
+		    "pll6: 0x%x, pll8: 0x%x, pll9: 0x%x, pll10: 0x%x, pcsdw12: 0x%x\n",
+		    hw_state->ebb0,
+		    hw_state->ebb4,
+		    hw_state->pll0,
+		    hw_state->pll1,
+		    hw_state->pll2,
+		    hw_state->pll3,
+		    hw_state->pll6,
+		    hw_state->pll8,
+		    hw_state->pll9,
+		    hw_state->pll10,
+		    hw_state->pcsdw12);
+}
+
+static const struct intel_shared_dpll_funcs bxt_ddi_pll_funcs = {
+	.enable = bxt_ddi_pll_enable,
+	.disable = bxt_ddi_pll_disable,
+	.get_hw_state = bxt_ddi_pll_get_hw_state,
+	.get_freq = bxt_ddi_pll_get_freq,
+};
+
+static const struct dpll_info bxt_plls[] = {
+	{ "PORT PLL A", &bxt_ddi_pll_funcs, DPLL_ID_SKL_DPLL0, 0 },
+	{ "PORT PLL B", &bxt_ddi_pll_funcs, DPLL_ID_SKL_DPLL1, 0 },
+	{ "PORT PLL C", &bxt_ddi_pll_funcs, DPLL_ID_SKL_DPLL2, 0 },
+	{ },
+};
+
+static const struct intel_dpll_mgr bxt_pll_mgr = {
+	.dpll_info = bxt_plls,
+	.compute_dplls = bxt_compute_dpll,
+	.get_dplls = bxt_get_dpll,
+	.put_dplls = intel_put_dpll,
+	.update_ref_clks = bxt_update_dpll_ref_clks,
+	.dump_hw_state = bxt_dump_hw_state,
+};
+
+static void icl_wrpll_get_multipliers(int bestdiv, int *pdiv,
+				      int *qdiv, int *kdiv)
+{
+	/* even dividers */
+	if (bestdiv % 2 == 0) {
+		if (bestdiv == 2) {
+			*pdiv = 2;
+			*qdiv = 1;
+			*kdiv = 1;
+		} else if (bestdiv % 4 == 0) {
+			*pdiv = 2;
+			*qdiv = bestdiv / 4;
+			*kdiv = 2;
+		} else if (bestdiv % 6 == 0) {
+			*pdiv = 3;
+			*qdiv = bestdiv / 6;
+			*kdiv = 2;
+		} else if (bestdiv % 5 == 0) {
+			*pdiv = 5;
+			*qdiv = bestdiv / 10;
+			*kdiv = 2;
+		} else if (bestdiv % 14 == 0) {
+			*pdiv = 7;
+			*qdiv = bestdiv / 14;
+			*kdiv = 2;
+		}
+	} else {
+		if (bestdiv == 3 || bestdiv == 5 || bestdiv == 7) {
+			*pdiv = bestdiv;
+			*qdiv = 1;
+			*kdiv = 1;
+		} else { /* 9, 15, 21 */
+			*pdiv = bestdiv / 3;
+			*qdiv = 1;
+			*kdiv = 3;
+		}
+	}
+}
+
+static void icl_wrpll_params_populate(struct skl_wrpll_params *params,
+				      u32 dco_freq, u32 ref_freq,
+				      int pdiv, int qdiv, int kdiv)
+{
+	u32 dco;
+
+	switch (kdiv) {
+	case 1:
+		params->kdiv = 1;
+		break;
+	case 2:
+		params->kdiv = 2;
+		break;
+	case 3:
+		params->kdiv = 4;
+		break;
+	default:
+		WARN(1, "Incorrect KDiv\n");
+	}
+
+	switch (pdiv) {
+	case 2:
+		params->pdiv = 1;
+		break;
+	case 3:
+		params->pdiv = 2;
+		break;
+	case 5:
+		params->pdiv = 4;
+		break;
+	case 7:
+		params->pdiv = 8;
+		break;
+	default:
+		WARN(1, "Incorrect PDiv\n");
+	}
+
+	WARN_ON(kdiv != 2 && qdiv != 1);
+
+	params->qdiv_ratio = qdiv;
+	params->qdiv_mode = (qdiv == 1) ? 0 : 1;
+
+	dco = div_u64((u64)dco_freq << 15, ref_freq);
+
+	params->dco_integer = dco >> 15;
+	params->dco_fraction = dco & 0x7fff;
+}
+
+/*
+ * Display WA #22010492432: ehl, tgl, adl-s, adl-p
+ * Program half of the nominal DCO divider fraction value.
+ */
+static bool
+ehl_combo_pll_div_frac_wa_needed(struct drm_i915_private *i915)
+{
+	return ((IS_PLATFORM(i915, INTEL_ELKHARTLAKE) &&
+		 IS_JSL_EHL_DISPLAY_STEP(i915, STEP_B0, STEP_FOREVER)) ||
+		 IS_TIGERLAKE(i915) || IS_ALDERLAKE_S(i915) || IS_ALDERLAKE_P(i915)) &&
+		 i915->display.dpll.ref_clks.nssc == 38400;
+}
+
+struct icl_combo_pll_params {
+	int clock;
+	struct skl_wrpll_params wrpll;
+};
+
+/*
+ * These values alrea already adjusted: they're the bits we write to the
+ * registers, not the logical values.
+ */
+static const struct icl_combo_pll_params icl_dp_combo_pll_24MHz_values[] = {
+	{ 540000,
+	  { .dco_integer = 0x151, .dco_fraction = 0x4000,		/* [0]: 5.4 */
+	    .pdiv = 0x2 /* 3 */, .kdiv = 1, .qdiv_mode = 0, .qdiv_ratio = 0, }, },
+	{ 270000,
+	  { .dco_integer = 0x151, .dco_fraction = 0x4000,		/* [1]: 2.7 */
+	    .pdiv = 0x2 /* 3 */, .kdiv = 2, .qdiv_mode = 0, .qdiv_ratio = 0, }, },
+	{ 162000,
+	  { .dco_integer = 0x151, .dco_fraction = 0x4000,		/* [2]: 1.62 */
+	    .pdiv = 0x4 /* 5 */, .kdiv = 2, .qdiv_mode = 0, .qdiv_ratio = 0, }, },
+	{ 324000,
+	  { .dco_integer = 0x151, .dco_fraction = 0x4000,		/* [3]: 3.24 */
+	    .pdiv = 0x4 /* 5 */, .kdiv = 1, .qdiv_mode = 0, .qdiv_ratio = 0, }, },
+	{ 216000,
+	  { .dco_integer = 0x168, .dco_fraction = 0x0000,		/* [4]: 2.16 */
+	    .pdiv = 0x1 /* 2 */, .kdiv = 2, .qdiv_mode = 1, .qdiv_ratio = 2, }, },
+	{ 432000,
+	  { .dco_integer = 0x168, .dco_fraction = 0x0000,		/* [5]: 4.32 */
+	    .pdiv = 0x1 /* 2 */, .kdiv = 2, .qdiv_mode = 0, .qdiv_ratio = 0, }, },
+	{ 648000,
+	  { .dco_integer = 0x195, .dco_fraction = 0x0000,		/* [6]: 6.48 */
+	    .pdiv = 0x2 /* 3 */, .kdiv = 1, .qdiv_mode = 0, .qdiv_ratio = 0, }, },
+	{ 810000,
+	  { .dco_integer = 0x151, .dco_fraction = 0x4000,		/* [7]: 8.1 */
+	    .pdiv = 0x1 /* 2 */, .kdiv = 1, .qdiv_mode = 0, .qdiv_ratio = 0, }, },
+};
+
+
+/* Also used for 38.4 MHz values. */
+static const struct icl_combo_pll_params icl_dp_combo_pll_19_2MHz_values[] = {
+	{ 540000,
+	  { .dco_integer = 0x1A5, .dco_fraction = 0x7000,		/* [0]: 5.4 */
+	    .pdiv = 0x2 /* 3 */, .kdiv = 1, .qdiv_mode = 0, .qdiv_ratio = 0, }, },
+	{ 270000,
+	  { .dco_integer = 0x1A5, .dco_fraction = 0x7000,		/* [1]: 2.7 */
+	    .pdiv = 0x2 /* 3 */, .kdiv = 2, .qdiv_mode = 0, .qdiv_ratio = 0, }, },
+	{ 162000,
+	  { .dco_integer = 0x1A5, .dco_fraction = 0x7000,		/* [2]: 1.62 */
+	    .pdiv = 0x4 /* 5 */, .kdiv = 2, .qdiv_mode = 0, .qdiv_ratio = 0, }, },
+	{ 324000,
+	  { .dco_integer = 0x1A5, .dco_fraction = 0x7000,		/* [3]: 3.24 */
+	    .pdiv = 0x4 /* 5 */, .kdiv = 1, .qdiv_mode = 0, .qdiv_ratio = 0, }, },
+	{ 216000,
+	  { .dco_integer = 0x1C2, .dco_fraction = 0x0000,		/* [4]: 2.16 */
+	    .pdiv = 0x1 /* 2 */, .kdiv = 2, .qdiv_mode = 1, .qdiv_ratio = 2, }, },
+	{ 432000,
+	  { .dco_integer = 0x1C2, .dco_fraction = 0x0000,		/* [5]: 4.32 */
+	    .pdiv = 0x1 /* 2 */, .kdiv = 2, .qdiv_mode = 0, .qdiv_ratio = 0, }, },
+	{ 648000,
+	  { .dco_integer = 0x1FA, .dco_fraction = 0x2000,		/* [6]: 6.48 */
+	    .pdiv = 0x2 /* 3 */, .kdiv = 1, .qdiv_mode = 0, .qdiv_ratio = 0, }, },
+	{ 810000,
+	  { .dco_integer = 0x1A5, .dco_fraction = 0x7000,		/* [7]: 8.1 */
+	    .pdiv = 0x1 /* 2 */, .kdiv = 1, .qdiv_mode = 0, .qdiv_ratio = 0, }, },
+};
+
+static const struct skl_wrpll_params icl_tbt_pll_24MHz_values = {
+	.dco_integer = 0x151, .dco_fraction = 0x4000,
+	.pdiv = 0x4 /* 5 */, .kdiv = 1, .qdiv_mode = 0, .qdiv_ratio = 0,
+};
+
+static const struct skl_wrpll_params icl_tbt_pll_19_2MHz_values = {
+	.dco_integer = 0x1A5, .dco_fraction = 0x7000,
+	.pdiv = 0x4 /* 5 */, .kdiv = 1, .qdiv_mode = 0, .qdiv_ratio = 0,
+};
+
+static const struct skl_wrpll_params tgl_tbt_pll_19_2MHz_values = {
+	.dco_integer = 0x54, .dco_fraction = 0x3000,
+	/* the following params are unused */
+	.pdiv = 0, .kdiv = 0, .qdiv_mode = 0, .qdiv_ratio = 0,
+};
+
+static const struct skl_wrpll_params tgl_tbt_pll_24MHz_values = {
+	.dco_integer = 0x43, .dco_fraction = 0x4000,
+	/* the following params are unused */
+};
+
+static int icl_calc_dp_combo_pll(struct intel_crtc_state *crtc_state,
+				 struct skl_wrpll_params *pll_params)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+	const struct icl_combo_pll_params *params =
+		dev_priv->display.dpll.ref_clks.nssc == 24000 ?
+		icl_dp_combo_pll_24MHz_values :
+		icl_dp_combo_pll_19_2MHz_values;
+	int clock = crtc_state->port_clock;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(icl_dp_combo_pll_24MHz_values); i++) {
+		if (clock == params[i].clock) {
+			*pll_params = params[i].wrpll;
+			return 0;
+		}
+	}
+
+	MISSING_CASE(clock);
+	return -EINVAL;
+}
+
+static int icl_calc_tbt_pll(struct intel_crtc_state *crtc_state,
+			    struct skl_wrpll_params *pll_params)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+
+	if (DISPLAY_VER(dev_priv) >= 12) {
+		switch (dev_priv->display.dpll.ref_clks.nssc) {
+		default:
+			MISSING_CASE(dev_priv->display.dpll.ref_clks.nssc);
+			fallthrough;
+		case 19200:
+		case 38400:
+			*pll_params = tgl_tbt_pll_19_2MHz_values;
+			break;
+		case 24000:
+			*pll_params = tgl_tbt_pll_24MHz_values;
+			break;
+		}
+	} else {
+		switch (dev_priv->display.dpll.ref_clks.nssc) {
+		default:
+			MISSING_CASE(dev_priv->display.dpll.ref_clks.nssc);
+			fallthrough;
+		case 19200:
+		case 38400:
+			*pll_params = icl_tbt_pll_19_2MHz_values;
+			break;
+		case 24000:
+			*pll_params = icl_tbt_pll_24MHz_values;
+			break;
+		}
+	}
+
+	return 0;
+}
+
+static int icl_ddi_tbt_pll_get_freq(struct drm_i915_private *i915,
+				    const struct intel_shared_dpll *pll,
+				    const struct intel_dpll_hw_state *pll_state)
+{
+	/*
+	 * The PLL outputs multiple frequencies at the same time, selection is
+	 * made at DDI clock mux level.
+	 */
+	drm_WARN_ON(&i915->drm, 1);
+
+	return 0;
+}
+
+static int icl_wrpll_ref_clock(struct drm_i915_private *i915)
+{
+	int ref_clock = i915->display.dpll.ref_clks.nssc;
+
+	/*
+	 * For ICL+, the spec states: if reference frequency is 38.4,
+	 * use 19.2 because the DPLL automatically divides that by 2.
+	 */
+	if (ref_clock == 38400)
+		ref_clock = 19200;
+
+	return ref_clock;
+}
+
+static int
+icl_calc_wrpll(struct intel_crtc_state *crtc_state,
+	       struct skl_wrpll_params *wrpll_params)
+{
+	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+	int ref_clock = icl_wrpll_ref_clock(i915);
+	u32 afe_clock = crtc_state->port_clock * 5;
+	u32 dco_min = 7998000;
+	u32 dco_max = 10000000;
+	u32 dco_mid = (dco_min + dco_max) / 2;
+	static const int dividers[] = {  2,  4,  6,  8, 10, 12,  14,  16,
+					 18, 20, 24, 28, 30, 32,  36,  40,
+					 42, 44, 48, 50, 52, 54,  56,  60,
+					 64, 66, 68, 70, 72, 76,  78,  80,
+					 84, 88, 90, 92, 96, 98, 100, 102,
+					  3,  5,  7,  9, 15, 21 };
+	u32 dco, best_dco = 0, dco_centrality = 0;
+	u32 best_dco_centrality = U32_MAX; /* Spec meaning of 999999 MHz */
+	int d, best_div = 0, pdiv = 0, qdiv = 0, kdiv = 0;
+
+	for (d = 0; d < ARRAY_SIZE(dividers); d++) {
+		dco = afe_clock * dividers[d];
+
+		if (dco <= dco_max && dco >= dco_min) {
+			dco_centrality = abs(dco - dco_mid);
+
+			if (dco_centrality < best_dco_centrality) {
+				best_dco_centrality = dco_centrality;
+				best_div = dividers[d];
+				best_dco = dco;
+			}
+		}
+	}
+
+	if (best_div == 0)
+		return -EINVAL;
+
+	icl_wrpll_get_multipliers(best_div, &pdiv, &qdiv, &kdiv);
+	icl_wrpll_params_populate(wrpll_params, best_dco, ref_clock,
+				  pdiv, qdiv, kdiv);
+
+	return 0;
+}
+
+static int icl_ddi_combo_pll_get_freq(struct drm_i915_private *i915,
+				      const struct intel_shared_dpll *pll,
+				      const struct intel_dpll_hw_state *pll_state)
+{
+	int ref_clock = icl_wrpll_ref_clock(i915);
+	u32 dco_fraction;
+	u32 p0, p1, p2, dco_freq;
+
+	p0 = pll_state->cfgcr1 & DPLL_CFGCR1_PDIV_MASK;
+	p2 = pll_state->cfgcr1 & DPLL_CFGCR1_KDIV_MASK;
+
+	if (pll_state->cfgcr1 & DPLL_CFGCR1_QDIV_MODE(1))
+		p1 = (pll_state->cfgcr1 & DPLL_CFGCR1_QDIV_RATIO_MASK) >>
+			DPLL_CFGCR1_QDIV_RATIO_SHIFT;
+	else
+		p1 = 1;
+
+	switch (p0) {
+	case DPLL_CFGCR1_PDIV_2:
+		p0 = 2;
+		break;
+	case DPLL_CFGCR1_PDIV_3:
+		p0 = 3;
+		break;
+	case DPLL_CFGCR1_PDIV_5:
+		p0 = 5;
+		break;
+	case DPLL_CFGCR1_PDIV_7:
+		p0 = 7;
+		break;
+	}
+
+	switch (p2) {
+	case DPLL_CFGCR1_KDIV_1:
+		p2 = 1;
+		break;
+	case DPLL_CFGCR1_KDIV_2:
+		p2 = 2;
+		break;
+	case DPLL_CFGCR1_KDIV_3:
+		p2 = 3;
+		break;
+	}
+
+	dco_freq = (pll_state->cfgcr0 & DPLL_CFGCR0_DCO_INTEGER_MASK) *
+		   ref_clock;
+
+	dco_fraction = (pll_state->cfgcr0 & DPLL_CFGCR0_DCO_FRACTION_MASK) >>
+		       DPLL_CFGCR0_DCO_FRACTION_SHIFT;
+
+	if (ehl_combo_pll_div_frac_wa_needed(i915))
+		dco_fraction *= 2;
+
+	dco_freq += (dco_fraction * ref_clock) / 0x8000;
+
+	if (drm_WARN_ON(&i915->drm, p0 == 0 || p1 == 0 || p2 == 0))
+		return 0;
+
+	return dco_freq / (p0 * p1 * p2 * 5);
+}
+
+static void icl_calc_dpll_state(struct drm_i915_private *i915,
+				const struct skl_wrpll_params *pll_params,
+				struct intel_dpll_hw_state *pll_state)
+{
+	u32 dco_fraction = pll_params->dco_fraction;
+
+	if (ehl_combo_pll_div_frac_wa_needed(i915))
+		dco_fraction = DIV_ROUND_CLOSEST(dco_fraction, 2);
+
+	pll_state->cfgcr0 = DPLL_CFGCR0_DCO_FRACTION(dco_fraction) |
+			    pll_params->dco_integer;
+
+	pll_state->cfgcr1 = DPLL_CFGCR1_QDIV_RATIO(pll_params->qdiv_ratio) |
+			    DPLL_CFGCR1_QDIV_MODE(pll_params->qdiv_mode) |
+			    DPLL_CFGCR1_KDIV(pll_params->kdiv) |
+			    DPLL_CFGCR1_PDIV(pll_params->pdiv);
+
+	if (DISPLAY_VER(i915) >= 12)
+		pll_state->cfgcr1 |= TGL_DPLL_CFGCR1_CFSELOVRD_NORMAL_XTAL;
+	else
+		pll_state->cfgcr1 |= DPLL_CFGCR1_CENTRAL_FREQ_8400;
+
+	if (i915->display.vbt.override_afc_startup)
+		pll_state->div0 = TGL_DPLL0_DIV0_AFC_STARTUP(i915->display.vbt.override_afc_startup_val);
+}
+
+static int icl_mg_pll_find_divisors(int clock_khz, bool is_dp, bool use_ssc,
+				    u32 *target_dco_khz,
+				    struct intel_dpll_hw_state *state,
+				    bool is_dkl)
+{
+	static const u8 div1_vals[] = { 7, 5, 3, 2 };
+	u32 dco_min_freq, dco_max_freq;
+	unsigned int i;
+	int div2;
+
+	dco_min_freq = is_dp ? 8100000 : use_ssc ? 8000000 : 7992000;
+	dco_max_freq = is_dp ? 8100000 : 10000000;
+
+	for (i = 0; i < ARRAY_SIZE(div1_vals); i++) {
+		int div1 = div1_vals[i];
+
+		for (div2 = 10; div2 > 0; div2--) {
+			int dco = div1 * div2 * clock_khz * 5;
+			int a_divratio, tlinedrv, inputsel;
+			u32 hsdiv;
+
+			if (dco < dco_min_freq || dco > dco_max_freq)
+				continue;
+
+			if (div2 >= 2) {
+				/*
+				 * Note: a_divratio not matching TGL BSpec
+				 * algorithm but matching hardcoded values and
+				 * working on HW for DP alt-mode at least
+				 */
+				a_divratio = is_dp ? 10 : 5;
+				tlinedrv = is_dkl ? 1 : 2;
+			} else {
+				a_divratio = 5;
+				tlinedrv = 0;
+			}
+			inputsel = is_dp ? 0 : 1;
+
+			switch (div1) {
+			default:
+				MISSING_CASE(div1);
+				fallthrough;
+			case 2:
+				hsdiv = MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_2;
+				break;
+			case 3:
+				hsdiv = MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_3;
+				break;
+			case 5:
+				hsdiv = MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_5;
+				break;
+			case 7:
+				hsdiv = MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_7;
+				break;
+			}
+
+			*target_dco_khz = dco;
+
+			state->mg_refclkin_ctl = MG_REFCLKIN_CTL_OD_2_MUX(1);
+
+			state->mg_clktop2_coreclkctl1 =
+				MG_CLKTOP2_CORECLKCTL1_A_DIVRATIO(a_divratio);
+
+			state->mg_clktop2_hsclkctl =
+				MG_CLKTOP2_HSCLKCTL_TLINEDRV_CLKSEL(tlinedrv) |
+				MG_CLKTOP2_HSCLKCTL_CORE_INPUTSEL(inputsel) |
+				hsdiv |
+				MG_CLKTOP2_HSCLKCTL_DSDIV_RATIO(div2);
+
+			return 0;
+		}
+	}
+
+	return -EINVAL;
+}
+
+/*
+ * The specification for this function uses real numbers, so the math had to be
+ * adapted to integer-only calculation, that's why it looks so different.
+ */
+static int icl_calc_mg_pll_state(struct intel_crtc_state *crtc_state,
+				 struct intel_dpll_hw_state *pll_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+	int refclk_khz = dev_priv->display.dpll.ref_clks.nssc;
+	int clock = crtc_state->port_clock;
+	u32 dco_khz, m1div, m2div_int, m2div_rem, m2div_frac;
+	u32 iref_ndiv, iref_trim, iref_pulse_w;
+	u32 prop_coeff, int_coeff;
+	u32 tdc_targetcnt, feedfwgain;
+	u64 ssc_stepsize, ssc_steplen, ssc_steplog;
+	u64 tmp;
+	bool use_ssc = false;
+	bool is_dp = !intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI);
+	bool is_dkl = DISPLAY_VER(dev_priv) >= 12;
+	int ret;
+
+	ret = icl_mg_pll_find_divisors(clock, is_dp, use_ssc, &dco_khz,
+				       pll_state, is_dkl);
+	if (ret)
+		return ret;
+
+	m1div = 2;
+	m2div_int = dco_khz / (refclk_khz * m1div);
+	if (m2div_int > 255) {
+		if (!is_dkl) {
+			m1div = 4;
+			m2div_int = dco_khz / (refclk_khz * m1div);
+		}
+
+		if (m2div_int > 255)
+			return -EINVAL;
+	}
+	m2div_rem = dco_khz % (refclk_khz * m1div);
+
+	tmp = (u64)m2div_rem * (1 << 22);
+	do_div(tmp, refclk_khz * m1div);
+	m2div_frac = tmp;
+
+	switch (refclk_khz) {
+	case 19200:
+		iref_ndiv = 1;
+		iref_trim = 28;
+		iref_pulse_w = 1;
+		break;
+	case 24000:
+		iref_ndiv = 1;
+		iref_trim = 25;
+		iref_pulse_w = 2;
+		break;
+	case 38400:
+		iref_ndiv = 2;
+		iref_trim = 28;
+		iref_pulse_w = 1;
+		break;
+	default:
+		MISSING_CASE(refclk_khz);
+		return -EINVAL;
+	}
+
+	/*
+	 * tdc_res = 0.000003
+	 * tdc_targetcnt = int(2 / (tdc_res * 8 * 50 * 1.1) / refclk_mhz + 0.5)
+	 *
+	 * The multiplication by 1000 is due to refclk MHz to KHz conversion. It
+	 * was supposed to be a division, but we rearranged the operations of
+	 * the formula to avoid early divisions so we don't multiply the
+	 * rounding errors.
+	 *
+	 * 0.000003 * 8 * 50 * 1.1 = 0.00132, also known as 132 / 100000, which
+	 * we also rearrange to work with integers.
+	 *
+	 * The 0.5 transformed to 5 results in a multiplication by 10 and the
+	 * last division by 10.
+	 */
+	tdc_targetcnt = (2 * 1000 * 100000 * 10 / (132 * refclk_khz) + 5) / 10;
+
+	/*
+	 * Here we divide dco_khz by 10 in order to allow the dividend to fit in
+	 * 32 bits. That's not a problem since we round the division down
+	 * anyway.
+	 */
+	feedfwgain = (use_ssc || m2div_rem > 0) ?
+		m1div * 1000000 * 100 / (dco_khz * 3 / 10) : 0;
+
+	if (dco_khz >= 9000000) {
+		prop_coeff = 5;
+		int_coeff = 10;
+	} else {
+		prop_coeff = 4;
+		int_coeff = 8;
+	}
+
+	if (use_ssc) {
+		tmp = mul_u32_u32(dco_khz, 47 * 32);
+		do_div(tmp, refclk_khz * m1div * 10000);
+		ssc_stepsize = tmp;
+
+		tmp = mul_u32_u32(dco_khz, 1000);
+		ssc_steplen = DIV_ROUND_UP_ULL(tmp, 32 * 2 * 32);
+	} else {
+		ssc_stepsize = 0;
+		ssc_steplen = 0;
+	}
+	ssc_steplog = 4;
+
+	/* write pll_state calculations */
+	if (is_dkl) {
+		pll_state->mg_pll_div0 = DKL_PLL_DIV0_INTEG_COEFF(int_coeff) |
+					 DKL_PLL_DIV0_PROP_COEFF(prop_coeff) |
+					 DKL_PLL_DIV0_FBPREDIV(m1div) |
+					 DKL_PLL_DIV0_FBDIV_INT(m2div_int);
+		if (dev_priv->display.vbt.override_afc_startup) {
+			u8 val = dev_priv->display.vbt.override_afc_startup_val;
+
+			pll_state->mg_pll_div0 |= DKL_PLL_DIV0_AFC_STARTUP(val);
+		}
+
+		pll_state->mg_pll_div1 = DKL_PLL_DIV1_IREF_TRIM(iref_trim) |
+					 DKL_PLL_DIV1_TDC_TARGET_CNT(tdc_targetcnt);
+
+		pll_state->mg_pll_ssc = DKL_PLL_SSC_IREF_NDIV_RATIO(iref_ndiv) |
+					DKL_PLL_SSC_STEP_LEN(ssc_steplen) |
+					DKL_PLL_SSC_STEP_NUM(ssc_steplog) |
+					(use_ssc ? DKL_PLL_SSC_EN : 0);
+
+		pll_state->mg_pll_bias = (m2div_frac ? DKL_PLL_BIAS_FRAC_EN_H : 0) |
+					  DKL_PLL_BIAS_FBDIV_FRAC(m2div_frac);
+
+		pll_state->mg_pll_tdc_coldst_bias =
+				DKL_PLL_TDC_SSC_STEP_SIZE(ssc_stepsize) |
+				DKL_PLL_TDC_FEED_FWD_GAIN(feedfwgain);
+
+	} else {
+		pll_state->mg_pll_div0 =
+			(m2div_rem > 0 ? MG_PLL_DIV0_FRACNEN_H : 0) |
+			MG_PLL_DIV0_FBDIV_FRAC(m2div_frac) |
+			MG_PLL_DIV0_FBDIV_INT(m2div_int);
+
+		pll_state->mg_pll_div1 =
+			MG_PLL_DIV1_IREF_NDIVRATIO(iref_ndiv) |
+			MG_PLL_DIV1_DITHER_DIV_2 |
+			MG_PLL_DIV1_NDIVRATIO(1) |
+			MG_PLL_DIV1_FBPREDIV(m1div);
+
+		pll_state->mg_pll_lf =
+			MG_PLL_LF_TDCTARGETCNT(tdc_targetcnt) |
+			MG_PLL_LF_AFCCNTSEL_512 |
+			MG_PLL_LF_GAINCTRL(1) |
+			MG_PLL_LF_INT_COEFF(int_coeff) |
+			MG_PLL_LF_PROP_COEFF(prop_coeff);
+
+		pll_state->mg_pll_frac_lock =
+			MG_PLL_FRAC_LOCK_TRUELOCK_CRIT_32 |
+			MG_PLL_FRAC_LOCK_EARLYLOCK_CRIT_32 |
+			MG_PLL_FRAC_LOCK_LOCKTHRESH(10) |
+			MG_PLL_FRAC_LOCK_DCODITHEREN |
+			MG_PLL_FRAC_LOCK_FEEDFWRDGAIN(feedfwgain);
+		if (use_ssc || m2div_rem > 0)
+			pll_state->mg_pll_frac_lock |=
+				MG_PLL_FRAC_LOCK_FEEDFWRDCAL_EN;
+
+		pll_state->mg_pll_ssc =
+			(use_ssc ? MG_PLL_SSC_EN : 0) |
+			MG_PLL_SSC_TYPE(2) |
+			MG_PLL_SSC_STEPLENGTH(ssc_steplen) |
+			MG_PLL_SSC_STEPNUM(ssc_steplog) |
+			MG_PLL_SSC_FLLEN |
+			MG_PLL_SSC_STEPSIZE(ssc_stepsize);
+
+		pll_state->mg_pll_tdc_coldst_bias =
+			MG_PLL_TDC_COLDST_COLDSTART |
+			MG_PLL_TDC_COLDST_IREFINT_EN |
+			MG_PLL_TDC_COLDST_REFBIAS_START_PULSE_W(iref_pulse_w) |
+			MG_PLL_TDC_TDCOVCCORR_EN |
+			MG_PLL_TDC_TDCSEL(3);
+
+		pll_state->mg_pll_bias =
+			MG_PLL_BIAS_BIAS_GB_SEL(3) |
+			MG_PLL_BIAS_INIT_DCOAMP(0x3F) |
+			MG_PLL_BIAS_BIAS_BONUS(10) |
+			MG_PLL_BIAS_BIASCAL_EN |
+			MG_PLL_BIAS_CTRIM(12) |
+			MG_PLL_BIAS_VREF_RDAC(4) |
+			MG_PLL_BIAS_IREFTRIM(iref_trim);
+
+		if (refclk_khz == 38400) {
+			pll_state->mg_pll_tdc_coldst_bias_mask =
+				MG_PLL_TDC_COLDST_COLDSTART;
+			pll_state->mg_pll_bias_mask = 0;
+		} else {
+			pll_state->mg_pll_tdc_coldst_bias_mask = -1U;
+			pll_state->mg_pll_bias_mask = -1U;
+		}
+
+		pll_state->mg_pll_tdc_coldst_bias &=
+			pll_state->mg_pll_tdc_coldst_bias_mask;
+		pll_state->mg_pll_bias &= pll_state->mg_pll_bias_mask;
+	}
+
+	return 0;
+}
+
+static int icl_ddi_mg_pll_get_freq(struct drm_i915_private *dev_priv,
+				   const struct intel_shared_dpll *pll,
+				   const struct intel_dpll_hw_state *pll_state)
+{
+	u32 m1, m2_int, m2_frac, div1, div2, ref_clock;
+	u64 tmp;
+
+	ref_clock = dev_priv->display.dpll.ref_clks.nssc;
+
+	if (DISPLAY_VER(dev_priv) >= 12) {
+		m1 = pll_state->mg_pll_div0 & DKL_PLL_DIV0_FBPREDIV_MASK;
+		m1 = m1 >> DKL_PLL_DIV0_FBPREDIV_SHIFT;
+		m2_int = pll_state->mg_pll_div0 & DKL_PLL_DIV0_FBDIV_INT_MASK;
+
+		if (pll_state->mg_pll_bias & DKL_PLL_BIAS_FRAC_EN_H) {
+			m2_frac = pll_state->mg_pll_bias &
+				  DKL_PLL_BIAS_FBDIV_FRAC_MASK;
+			m2_frac = m2_frac >> DKL_PLL_BIAS_FBDIV_SHIFT;
+		} else {
+			m2_frac = 0;
+		}
+	} else {
+		m1 = pll_state->mg_pll_div1 & MG_PLL_DIV1_FBPREDIV_MASK;
+		m2_int = pll_state->mg_pll_div0 & MG_PLL_DIV0_FBDIV_INT_MASK;
+
+		if (pll_state->mg_pll_div0 & MG_PLL_DIV0_FRACNEN_H) {
+			m2_frac = pll_state->mg_pll_div0 &
+				  MG_PLL_DIV0_FBDIV_FRAC_MASK;
+			m2_frac = m2_frac >> MG_PLL_DIV0_FBDIV_FRAC_SHIFT;
+		} else {
+			m2_frac = 0;
+		}
+	}
+
+	switch (pll_state->mg_clktop2_hsclkctl &
+		MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_MASK) {
+	case MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_2:
+		div1 = 2;
+		break;
+	case MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_3:
+		div1 = 3;
+		break;
+	case MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_5:
+		div1 = 5;
+		break;
+	case MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_7:
+		div1 = 7;
+		break;
+	default:
+		MISSING_CASE(pll_state->mg_clktop2_hsclkctl);
+		return 0;
+	}
+
+	div2 = (pll_state->mg_clktop2_hsclkctl &
+		MG_CLKTOP2_HSCLKCTL_DSDIV_RATIO_MASK) >>
+		MG_CLKTOP2_HSCLKCTL_DSDIV_RATIO_SHIFT;
+
+	/* div2 value of 0 is same as 1 means no div */
+	if (div2 == 0)
+		div2 = 1;
+
+	/*
+	 * Adjust the original formula to delay the division by 2^22 in order to
+	 * minimize possible rounding errors.
+	 */
+	tmp = (u64)m1 * m2_int * ref_clock +
+	      (((u64)m1 * m2_frac * ref_clock) >> 22);
+	tmp = div_u64(tmp, 5 * div1 * div2);
+
+	return tmp;
+}
+
+/**
+ * icl_set_active_port_dpll - select the active port DPLL for a given CRTC
+ * @crtc_state: state for the CRTC to select the DPLL for
+ * @port_dpll_id: the active @port_dpll_id to select
+ *
+ * Select the given @port_dpll_id instance from the DPLLs reserved for the
+ * CRTC.
+ */
+void icl_set_active_port_dpll(struct intel_crtc_state *crtc_state,
+			      enum icl_port_dpll_id port_dpll_id)
+{
+	struct icl_port_dpll *port_dpll =
+		&crtc_state->icl_port_dplls[port_dpll_id];
+
+	crtc_state->shared_dpll = port_dpll->pll;
+	crtc_state->dpll_hw_state = port_dpll->hw_state;
+}
+
+static void icl_update_active_dpll(struct intel_atomic_state *state,
+				   struct intel_crtc *crtc,
+				   struct intel_encoder *encoder)
+{
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	struct intel_digital_port *primary_port;
+	enum icl_port_dpll_id port_dpll_id = ICL_PORT_DPLL_DEFAULT;
+
+	primary_port = encoder->type == INTEL_OUTPUT_DP_MST ?
+		enc_to_mst(encoder)->primary :
+		enc_to_dig_port(encoder);
+
+	if (primary_port &&
+	    (intel_tc_port_in_dp_alt_mode(primary_port) ||
+	     intel_tc_port_in_legacy_mode(primary_port)))
+		port_dpll_id = ICL_PORT_DPLL_MG_PHY;
+
+	icl_set_active_port_dpll(crtc_state, port_dpll_id);
+}
+
+static u32 intel_get_hti_plls(struct drm_i915_private *i915)
+{
+	if (!(i915->hti_state & HDPORT_ENABLED))
+		return 0;
+
+	return REG_FIELD_GET(HDPORT_DPLL_USED_MASK, i915->hti_state);
+}
+
+static int icl_compute_combo_phy_dpll(struct intel_atomic_state *state,
+				      struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	struct icl_port_dpll *port_dpll =
+		&crtc_state->icl_port_dplls[ICL_PORT_DPLL_DEFAULT];
+	struct skl_wrpll_params pll_params = {};
+	int ret;
+
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI) ||
+	    intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI))
+		ret = icl_calc_wrpll(crtc_state, &pll_params);
+	else
+		ret = icl_calc_dp_combo_pll(crtc_state, &pll_params);
+
+	if (ret)
+		return ret;
+
+	icl_calc_dpll_state(dev_priv, &pll_params, &port_dpll->hw_state);
+
+	/* this is mainly for the fastset check */
+	icl_set_active_port_dpll(crtc_state, ICL_PORT_DPLL_DEFAULT);
+
+	crtc_state->port_clock = icl_ddi_combo_pll_get_freq(dev_priv, NULL,
+							    &port_dpll->hw_state);
+
+	return 0;
+}
+
+static int icl_get_combo_phy_dpll(struct intel_atomic_state *state,
+				  struct intel_crtc *crtc,
+				  struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	struct icl_port_dpll *port_dpll =
+		&crtc_state->icl_port_dplls[ICL_PORT_DPLL_DEFAULT];
+	enum port port = encoder->port;
+	unsigned long dpll_mask;
+
+	if (IS_ALDERLAKE_S(dev_priv)) {
+		dpll_mask =
+			BIT(DPLL_ID_DG1_DPLL3) |
+			BIT(DPLL_ID_DG1_DPLL2) |
+			BIT(DPLL_ID_ICL_DPLL1) |
+			BIT(DPLL_ID_ICL_DPLL0);
+	} else if (IS_DG1(dev_priv)) {
+		if (port == PORT_D || port == PORT_E) {
+			dpll_mask =
+				BIT(DPLL_ID_DG1_DPLL2) |
+				BIT(DPLL_ID_DG1_DPLL3);
+		} else {
+			dpll_mask =
+				BIT(DPLL_ID_DG1_DPLL0) |
+				BIT(DPLL_ID_DG1_DPLL1);
+		}
+	} else if (IS_ROCKETLAKE(dev_priv)) {
+		dpll_mask =
+			BIT(DPLL_ID_EHL_DPLL4) |
+			BIT(DPLL_ID_ICL_DPLL1) |
+			BIT(DPLL_ID_ICL_DPLL0);
+	} else if (IS_JSL_EHL(dev_priv) && port != PORT_A) {
+		dpll_mask =
+			BIT(DPLL_ID_EHL_DPLL4) |
+			BIT(DPLL_ID_ICL_DPLL1) |
+			BIT(DPLL_ID_ICL_DPLL0);
+	} else {
+		dpll_mask = BIT(DPLL_ID_ICL_DPLL1) | BIT(DPLL_ID_ICL_DPLL0);
+	}
+
+	/* Eliminate DPLLs from consideration if reserved by HTI */
+	dpll_mask &= ~intel_get_hti_plls(dev_priv);
+
+	port_dpll->pll = intel_find_shared_dpll(state, crtc,
+						&port_dpll->hw_state,
+						dpll_mask);
+	if (!port_dpll->pll)
+		return -EINVAL;
+
+	intel_reference_shared_dpll(state, crtc,
+				    port_dpll->pll, &port_dpll->hw_state);
+
+	icl_update_active_dpll(state, crtc, encoder);
+
+	return 0;
+}
+
+static int icl_compute_tc_phy_dplls(struct intel_atomic_state *state,
+				    struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	struct icl_port_dpll *port_dpll =
+		&crtc_state->icl_port_dplls[ICL_PORT_DPLL_DEFAULT];
+	struct skl_wrpll_params pll_params = {};
+	int ret;
+
+	port_dpll = &crtc_state->icl_port_dplls[ICL_PORT_DPLL_DEFAULT];
+	ret = icl_calc_tbt_pll(crtc_state, &pll_params);
+	if (ret)
+		return ret;
+
+	icl_calc_dpll_state(dev_priv, &pll_params, &port_dpll->hw_state);
+
+	port_dpll = &crtc_state->icl_port_dplls[ICL_PORT_DPLL_MG_PHY];
+	ret = icl_calc_mg_pll_state(crtc_state, &port_dpll->hw_state);
+	if (ret)
+		return ret;
+
+	/* this is mainly for the fastset check */
+	icl_set_active_port_dpll(crtc_state, ICL_PORT_DPLL_MG_PHY);
+
+	crtc_state->port_clock = icl_ddi_mg_pll_get_freq(dev_priv, NULL,
+							 &port_dpll->hw_state);
+
+	return 0;
+}
+
+static int icl_get_tc_phy_dplls(struct intel_atomic_state *state,
+				struct intel_crtc *crtc,
+				struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	struct icl_port_dpll *port_dpll =
+		&crtc_state->icl_port_dplls[ICL_PORT_DPLL_DEFAULT];
+	enum intel_dpll_id dpll_id;
+	int ret;
+
+	port_dpll = &crtc_state->icl_port_dplls[ICL_PORT_DPLL_DEFAULT];
+	port_dpll->pll = intel_find_shared_dpll(state, crtc,
+						&port_dpll->hw_state,
+						BIT(DPLL_ID_ICL_TBTPLL));
+	if (!port_dpll->pll)
+		return -EINVAL;
+	intel_reference_shared_dpll(state, crtc,
+				    port_dpll->pll, &port_dpll->hw_state);
+
+
+	port_dpll = &crtc_state->icl_port_dplls[ICL_PORT_DPLL_MG_PHY];
+	dpll_id = icl_tc_port_to_pll_id(intel_port_to_tc(dev_priv,
+							 encoder->port));
+	port_dpll->pll = intel_find_shared_dpll(state, crtc,
+						&port_dpll->hw_state,
+						BIT(dpll_id));
+	if (!port_dpll->pll) {
+		ret = -EINVAL;
+		goto err_unreference_tbt_pll;
+	}
+	intel_reference_shared_dpll(state, crtc,
+				    port_dpll->pll, &port_dpll->hw_state);
+
+	icl_update_active_dpll(state, crtc, encoder);
+
+	return 0;
+
+err_unreference_tbt_pll:
+	port_dpll = &crtc_state->icl_port_dplls[ICL_PORT_DPLL_DEFAULT];
+	intel_unreference_shared_dpll(state, crtc, port_dpll->pll);
+
+	return ret;
+}
+
+static int icl_compute_dplls(struct intel_atomic_state *state,
+			     struct intel_crtc *crtc,
+			     struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	enum phy phy = intel_port_to_phy(dev_priv, encoder->port);
+
+	if (intel_phy_is_combo(dev_priv, phy))
+		return icl_compute_combo_phy_dpll(state, crtc);
+	else if (intel_phy_is_tc(dev_priv, phy))
+		return icl_compute_tc_phy_dplls(state, crtc);
+
+	MISSING_CASE(phy);
+
+	return 0;
+}
+
+static int icl_get_dplls(struct intel_atomic_state *state,
+			 struct intel_crtc *crtc,
+			 struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	enum phy phy = intel_port_to_phy(dev_priv, encoder->port);
+
+	if (intel_phy_is_combo(dev_priv, phy))
+		return icl_get_combo_phy_dpll(state, crtc, encoder);
+	else if (intel_phy_is_tc(dev_priv, phy))
+		return icl_get_tc_phy_dplls(state, crtc, encoder);
+
+	MISSING_CASE(phy);
+
+	return -EINVAL;
+}
+
+static void icl_put_dplls(struct intel_atomic_state *state,
+			  struct intel_crtc *crtc)
+{
+	const struct intel_crtc_state *old_crtc_state =
+		intel_atomic_get_old_crtc_state(state, crtc);
+	struct intel_crtc_state *new_crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	enum icl_port_dpll_id id;
+
+	new_crtc_state->shared_dpll = NULL;
+
+	for (id = ICL_PORT_DPLL_DEFAULT; id < ICL_PORT_DPLL_COUNT; id++) {
+		const struct icl_port_dpll *old_port_dpll =
+			&old_crtc_state->icl_port_dplls[id];
+		struct icl_port_dpll *new_port_dpll =
+			&new_crtc_state->icl_port_dplls[id];
+
+		new_port_dpll->pll = NULL;
+
+		if (!old_port_dpll->pll)
+			continue;
+
+		intel_unreference_shared_dpll(state, crtc, old_port_dpll->pll);
+	}
+}
+
+static bool mg_pll_get_hw_state(struct drm_i915_private *dev_priv,
+				struct intel_shared_dpll *pll,
+				struct intel_dpll_hw_state *hw_state)
+{
+	const enum intel_dpll_id id = pll->info->id;
+	enum tc_port tc_port = icl_pll_id_to_tc_port(id);
+	intel_wakeref_t wakeref;
+	bool ret = false;
+	u32 val;
+
+	i915_reg_t enable_reg = intel_tc_pll_enable_reg(dev_priv, pll);
+
+	wakeref = intel_display_power_get_if_enabled(dev_priv,
+						     POWER_DOMAIN_DISPLAY_CORE);
+	if (!wakeref)
+		return false;
+
+	val = intel_de_read(dev_priv, enable_reg);
+	if (!(val & PLL_ENABLE))
+		goto out;
+
+	hw_state->mg_refclkin_ctl = intel_de_read(dev_priv,
+						  MG_REFCLKIN_CTL(tc_port));
+	hw_state->mg_refclkin_ctl &= MG_REFCLKIN_CTL_OD_2_MUX_MASK;
+
+	hw_state->mg_clktop2_coreclkctl1 =
+		intel_de_read(dev_priv, MG_CLKTOP2_CORECLKCTL1(tc_port));
+	hw_state->mg_clktop2_coreclkctl1 &=
+		MG_CLKTOP2_CORECLKCTL1_A_DIVRATIO_MASK;
+
+	hw_state->mg_clktop2_hsclkctl =
+		intel_de_read(dev_priv, MG_CLKTOP2_HSCLKCTL(tc_port));
+	hw_state->mg_clktop2_hsclkctl &=
+		MG_CLKTOP2_HSCLKCTL_TLINEDRV_CLKSEL_MASK |
+		MG_CLKTOP2_HSCLKCTL_CORE_INPUTSEL_MASK |
+		MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_MASK |
+		MG_CLKTOP2_HSCLKCTL_DSDIV_RATIO_MASK;
+
+	hw_state->mg_pll_div0 = intel_de_read(dev_priv, MG_PLL_DIV0(tc_port));
+	hw_state->mg_pll_div1 = intel_de_read(dev_priv, MG_PLL_DIV1(tc_port));
+	hw_state->mg_pll_lf = intel_de_read(dev_priv, MG_PLL_LF(tc_port));
+	hw_state->mg_pll_frac_lock = intel_de_read(dev_priv,
+						   MG_PLL_FRAC_LOCK(tc_port));
+	hw_state->mg_pll_ssc = intel_de_read(dev_priv, MG_PLL_SSC(tc_port));
+
+	hw_state->mg_pll_bias = intel_de_read(dev_priv, MG_PLL_BIAS(tc_port));
+	hw_state->mg_pll_tdc_coldst_bias =
+		intel_de_read(dev_priv, MG_PLL_TDC_COLDST_BIAS(tc_port));
+
+	if (dev_priv->display.dpll.ref_clks.nssc == 38400) {
+		hw_state->mg_pll_tdc_coldst_bias_mask = MG_PLL_TDC_COLDST_COLDSTART;
+		hw_state->mg_pll_bias_mask = 0;
+	} else {
+		hw_state->mg_pll_tdc_coldst_bias_mask = -1U;
+		hw_state->mg_pll_bias_mask = -1U;
+	}
+
+	hw_state->mg_pll_tdc_coldst_bias &= hw_state->mg_pll_tdc_coldst_bias_mask;
+	hw_state->mg_pll_bias &= hw_state->mg_pll_bias_mask;
+
+	ret = true;
+out:
+	intel_display_power_put(dev_priv, POWER_DOMAIN_DISPLAY_CORE, wakeref);
+	return ret;
+}
+
+static bool dkl_pll_get_hw_state(struct drm_i915_private *dev_priv,
+				 struct intel_shared_dpll *pll,
+				 struct intel_dpll_hw_state *hw_state)
+{
+	const enum intel_dpll_id id = pll->info->id;
+	enum tc_port tc_port = icl_pll_id_to_tc_port(id);
+	intel_wakeref_t wakeref;
+	bool ret = false;
+	u32 val;
+
+	wakeref = intel_display_power_get_if_enabled(dev_priv,
+						     POWER_DOMAIN_DISPLAY_CORE);
+	if (!wakeref)
+		return false;
+
+	val = intel_de_read(dev_priv, intel_tc_pll_enable_reg(dev_priv, pll));
+	if (!(val & PLL_ENABLE))
+		goto out;
+
+	/*
+	 * All registers read here have the same HIP_INDEX_REG even though
+	 * they are on different building blocks
+	 */
+	hw_state->mg_refclkin_ctl = intel_dkl_phy_read(dev_priv,
+						       DKL_REFCLKIN_CTL(tc_port), 2);
+	hw_state->mg_refclkin_ctl &= MG_REFCLKIN_CTL_OD_2_MUX_MASK;
+
+	hw_state->mg_clktop2_hsclkctl =
+		intel_dkl_phy_read(dev_priv, DKL_CLKTOP2_HSCLKCTL(tc_port), 2);
+	hw_state->mg_clktop2_hsclkctl &=
+		MG_CLKTOP2_HSCLKCTL_TLINEDRV_CLKSEL_MASK |
+		MG_CLKTOP2_HSCLKCTL_CORE_INPUTSEL_MASK |
+		MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_MASK |
+		MG_CLKTOP2_HSCLKCTL_DSDIV_RATIO_MASK;
+
+	hw_state->mg_clktop2_coreclkctl1 =
+		intel_dkl_phy_read(dev_priv, DKL_CLKTOP2_CORECLKCTL1(tc_port), 2);
+	hw_state->mg_clktop2_coreclkctl1 &=
+		MG_CLKTOP2_CORECLKCTL1_A_DIVRATIO_MASK;
+
+	hw_state->mg_pll_div0 = intel_dkl_phy_read(dev_priv, DKL_PLL_DIV0(tc_port), 2);
+	val = DKL_PLL_DIV0_MASK;
+	if (dev_priv->display.vbt.override_afc_startup)
+		val |= DKL_PLL_DIV0_AFC_STARTUP_MASK;
+	hw_state->mg_pll_div0 &= val;
+
+	hw_state->mg_pll_div1 = intel_dkl_phy_read(dev_priv, DKL_PLL_DIV1(tc_port), 2);
+	hw_state->mg_pll_div1 &= (DKL_PLL_DIV1_IREF_TRIM_MASK |
+				  DKL_PLL_DIV1_TDC_TARGET_CNT_MASK);
+
+	hw_state->mg_pll_ssc = intel_dkl_phy_read(dev_priv, DKL_PLL_SSC(tc_port), 2);
+	hw_state->mg_pll_ssc &= (DKL_PLL_SSC_IREF_NDIV_RATIO_MASK |
+				 DKL_PLL_SSC_STEP_LEN_MASK |
+				 DKL_PLL_SSC_STEP_NUM_MASK |
+				 DKL_PLL_SSC_EN);
+
+	hw_state->mg_pll_bias = intel_dkl_phy_read(dev_priv, DKL_PLL_BIAS(tc_port), 2);
+	hw_state->mg_pll_bias &= (DKL_PLL_BIAS_FRAC_EN_H |
+				  DKL_PLL_BIAS_FBDIV_FRAC_MASK);
+
+	hw_state->mg_pll_tdc_coldst_bias =
+		intel_dkl_phy_read(dev_priv, DKL_PLL_TDC_COLDST_BIAS(tc_port), 2);
+	hw_state->mg_pll_tdc_coldst_bias &= (DKL_PLL_TDC_SSC_STEP_SIZE_MASK |
+					     DKL_PLL_TDC_FEED_FWD_GAIN_MASK);
+
+	ret = true;
+out:
+	intel_display_power_put(dev_priv, POWER_DOMAIN_DISPLAY_CORE, wakeref);
+	return ret;
+}
+
+static bool icl_pll_get_hw_state(struct drm_i915_private *dev_priv,
+				 struct intel_shared_dpll *pll,
+				 struct intel_dpll_hw_state *hw_state,
+				 i915_reg_t enable_reg)
+{
+	const enum intel_dpll_id id = pll->info->id;
+	intel_wakeref_t wakeref;
+	bool ret = false;
+	u32 val;
+
+	wakeref = intel_display_power_get_if_enabled(dev_priv,
+						     POWER_DOMAIN_DISPLAY_CORE);
+	if (!wakeref)
+		return false;
+
+	val = intel_de_read(dev_priv, enable_reg);
+	if (!(val & PLL_ENABLE))
+		goto out;
+
+	if (IS_ALDERLAKE_S(dev_priv)) {
+		hw_state->cfgcr0 = intel_de_read(dev_priv, ADLS_DPLL_CFGCR0(id));
+		hw_state->cfgcr1 = intel_de_read(dev_priv, ADLS_DPLL_CFGCR1(id));
+	} else if (IS_DG1(dev_priv)) {
+		hw_state->cfgcr0 = intel_de_read(dev_priv, DG1_DPLL_CFGCR0(id));
+		hw_state->cfgcr1 = intel_de_read(dev_priv, DG1_DPLL_CFGCR1(id));
+	} else if (IS_ROCKETLAKE(dev_priv)) {
+		hw_state->cfgcr0 = intel_de_read(dev_priv,
+						 RKL_DPLL_CFGCR0(id));
+		hw_state->cfgcr1 = intel_de_read(dev_priv,
+						 RKL_DPLL_CFGCR1(id));
+	} else if (DISPLAY_VER(dev_priv) >= 12) {
+		hw_state->cfgcr0 = intel_de_read(dev_priv,
+						 TGL_DPLL_CFGCR0(id));
+		hw_state->cfgcr1 = intel_de_read(dev_priv,
+						 TGL_DPLL_CFGCR1(id));
+		if (dev_priv->display.vbt.override_afc_startup) {
+			hw_state->div0 = intel_de_read(dev_priv, TGL_DPLL0_DIV0(id));
+			hw_state->div0 &= TGL_DPLL0_DIV0_AFC_STARTUP_MASK;
+		}
+	} else {
+		if (IS_JSL_EHL(dev_priv) && id == DPLL_ID_EHL_DPLL4) {
+			hw_state->cfgcr0 = intel_de_read(dev_priv,
+							 ICL_DPLL_CFGCR0(4));
+			hw_state->cfgcr1 = intel_de_read(dev_priv,
+							 ICL_DPLL_CFGCR1(4));
+		} else {
+			hw_state->cfgcr0 = intel_de_read(dev_priv,
+							 ICL_DPLL_CFGCR0(id));
+			hw_state->cfgcr1 = intel_de_read(dev_priv,
+							 ICL_DPLL_CFGCR1(id));
+		}
+	}
+
+	ret = true;
+out:
+	intel_display_power_put(dev_priv, POWER_DOMAIN_DISPLAY_CORE, wakeref);
+	return ret;
+}
+
+static bool combo_pll_get_hw_state(struct drm_i915_private *dev_priv,
+				   struct intel_shared_dpll *pll,
+				   struct intel_dpll_hw_state *hw_state)
+{
+	i915_reg_t enable_reg = intel_combo_pll_enable_reg(dev_priv, pll);
+
+	return icl_pll_get_hw_state(dev_priv, pll, hw_state, enable_reg);
+}
+
+static bool tbt_pll_get_hw_state(struct drm_i915_private *dev_priv,
+				 struct intel_shared_dpll *pll,
+				 struct intel_dpll_hw_state *hw_state)
+{
+	return icl_pll_get_hw_state(dev_priv, pll, hw_state, TBT_PLL_ENABLE);
+}
+
+static void icl_dpll_write(struct drm_i915_private *dev_priv,
+			   struct intel_shared_dpll *pll)
+{
+	struct intel_dpll_hw_state *hw_state = &pll->state.hw_state;
+	const enum intel_dpll_id id = pll->info->id;
+	i915_reg_t cfgcr0_reg, cfgcr1_reg, div0_reg = INVALID_MMIO_REG;
+
+	if (IS_ALDERLAKE_S(dev_priv)) {
+		cfgcr0_reg = ADLS_DPLL_CFGCR0(id);
+		cfgcr1_reg = ADLS_DPLL_CFGCR1(id);
+	} else if (IS_DG1(dev_priv)) {
+		cfgcr0_reg = DG1_DPLL_CFGCR0(id);
+		cfgcr1_reg = DG1_DPLL_CFGCR1(id);
+	} else if (IS_ROCKETLAKE(dev_priv)) {
+		cfgcr0_reg = RKL_DPLL_CFGCR0(id);
+		cfgcr1_reg = RKL_DPLL_CFGCR1(id);
+	} else if (DISPLAY_VER(dev_priv) >= 12) {
+		cfgcr0_reg = TGL_DPLL_CFGCR0(id);
+		cfgcr1_reg = TGL_DPLL_CFGCR1(id);
+		div0_reg = TGL_DPLL0_DIV0(id);
+	} else {
+		if (IS_JSL_EHL(dev_priv) && id == DPLL_ID_EHL_DPLL4) {
+			cfgcr0_reg = ICL_DPLL_CFGCR0(4);
+			cfgcr1_reg = ICL_DPLL_CFGCR1(4);
+		} else {
+			cfgcr0_reg = ICL_DPLL_CFGCR0(id);
+			cfgcr1_reg = ICL_DPLL_CFGCR1(id);
+		}
+	}
+
+	intel_de_write(dev_priv, cfgcr0_reg, hw_state->cfgcr0);
+	intel_de_write(dev_priv, cfgcr1_reg, hw_state->cfgcr1);
+	drm_WARN_ON_ONCE(&dev_priv->drm, dev_priv->display.vbt.override_afc_startup &&
+			 !i915_mmio_reg_valid(div0_reg));
+	if (dev_priv->display.vbt.override_afc_startup &&
+	    i915_mmio_reg_valid(div0_reg))
+		intel_de_rmw(dev_priv, div0_reg, TGL_DPLL0_DIV0_AFC_STARTUP_MASK,
+			     hw_state->div0);
+	intel_de_posting_read(dev_priv, cfgcr1_reg);
+}
+
+static void icl_mg_pll_write(struct drm_i915_private *dev_priv,
+			     struct intel_shared_dpll *pll)
+{
+	struct intel_dpll_hw_state *hw_state = &pll->state.hw_state;
+	enum tc_port tc_port = icl_pll_id_to_tc_port(pll->info->id);
+	u32 val;
+
+	/*
+	 * Some of the following registers have reserved fields, so program
+	 * these with RMW based on a mask. The mask can be fixed or generated
+	 * during the calc/readout phase if the mask depends on some other HW
+	 * state like refclk, see icl_calc_mg_pll_state().
+	 */
+	val = intel_de_read(dev_priv, MG_REFCLKIN_CTL(tc_port));
+	val &= ~MG_REFCLKIN_CTL_OD_2_MUX_MASK;
+	val |= hw_state->mg_refclkin_ctl;
+	intel_de_write(dev_priv, MG_REFCLKIN_CTL(tc_port), val);
+
+	val = intel_de_read(dev_priv, MG_CLKTOP2_CORECLKCTL1(tc_port));
+	val &= ~MG_CLKTOP2_CORECLKCTL1_A_DIVRATIO_MASK;
+	val |= hw_state->mg_clktop2_coreclkctl1;
+	intel_de_write(dev_priv, MG_CLKTOP2_CORECLKCTL1(tc_port), val);
+
+	val = intel_de_read(dev_priv, MG_CLKTOP2_HSCLKCTL(tc_port));
+	val &= ~(MG_CLKTOP2_HSCLKCTL_TLINEDRV_CLKSEL_MASK |
+		 MG_CLKTOP2_HSCLKCTL_CORE_INPUTSEL_MASK |
+		 MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_MASK |
+		 MG_CLKTOP2_HSCLKCTL_DSDIV_RATIO_MASK);
+	val |= hw_state->mg_clktop2_hsclkctl;
+	intel_de_write(dev_priv, MG_CLKTOP2_HSCLKCTL(tc_port), val);
+
+	intel_de_write(dev_priv, MG_PLL_DIV0(tc_port), hw_state->mg_pll_div0);
+	intel_de_write(dev_priv, MG_PLL_DIV1(tc_port), hw_state->mg_pll_div1);
+	intel_de_write(dev_priv, MG_PLL_LF(tc_port), hw_state->mg_pll_lf);
+	intel_de_write(dev_priv, MG_PLL_FRAC_LOCK(tc_port),
+		       hw_state->mg_pll_frac_lock);
+	intel_de_write(dev_priv, MG_PLL_SSC(tc_port), hw_state->mg_pll_ssc);
+
+	val = intel_de_read(dev_priv, MG_PLL_BIAS(tc_port));
+	val &= ~hw_state->mg_pll_bias_mask;
+	val |= hw_state->mg_pll_bias;
+	intel_de_write(dev_priv, MG_PLL_BIAS(tc_port), val);
+
+	val = intel_de_read(dev_priv, MG_PLL_TDC_COLDST_BIAS(tc_port));
+	val &= ~hw_state->mg_pll_tdc_coldst_bias_mask;
+	val |= hw_state->mg_pll_tdc_coldst_bias;
+	intel_de_write(dev_priv, MG_PLL_TDC_COLDST_BIAS(tc_port), val);
+
+	intel_de_posting_read(dev_priv, MG_PLL_TDC_COLDST_BIAS(tc_port));
+}
+
+static void dkl_pll_write(struct drm_i915_private *dev_priv,
+			  struct intel_shared_dpll *pll)
+{
+	struct intel_dpll_hw_state *hw_state = &pll->state.hw_state;
+	enum tc_port tc_port = icl_pll_id_to_tc_port(pll->info->id);
+	u32 val;
+
+	/*
+	 * All registers programmed here have the same HIP_INDEX_REG even
+	 * though on different building block
+	 */
+	/* All the registers are RMW */
+	val = intel_dkl_phy_read(dev_priv, DKL_REFCLKIN_CTL(tc_port), 2);
+	val &= ~MG_REFCLKIN_CTL_OD_2_MUX_MASK;
+	val |= hw_state->mg_refclkin_ctl;
+	intel_dkl_phy_write(dev_priv, DKL_REFCLKIN_CTL(tc_port), 2, val);
+
+	val = intel_dkl_phy_read(dev_priv, DKL_CLKTOP2_CORECLKCTL1(tc_port), 2);
+	val &= ~MG_CLKTOP2_CORECLKCTL1_A_DIVRATIO_MASK;
+	val |= hw_state->mg_clktop2_coreclkctl1;
+	intel_dkl_phy_write(dev_priv, DKL_CLKTOP2_CORECLKCTL1(tc_port), 2, val);
+
+	val = intel_dkl_phy_read(dev_priv, DKL_CLKTOP2_HSCLKCTL(tc_port), 2);
+	val &= ~(MG_CLKTOP2_HSCLKCTL_TLINEDRV_CLKSEL_MASK |
+		 MG_CLKTOP2_HSCLKCTL_CORE_INPUTSEL_MASK |
+		 MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_MASK |
+		 MG_CLKTOP2_HSCLKCTL_DSDIV_RATIO_MASK);
+	val |= hw_state->mg_clktop2_hsclkctl;
+	intel_dkl_phy_write(dev_priv, DKL_CLKTOP2_HSCLKCTL(tc_port), 2, val);
+
+	val = DKL_PLL_DIV0_MASK;
+	if (dev_priv->display.vbt.override_afc_startup)
+		val |= DKL_PLL_DIV0_AFC_STARTUP_MASK;
+	intel_dkl_phy_rmw(dev_priv, DKL_PLL_DIV0(tc_port), 2, val,
+			  hw_state->mg_pll_div0);
+
+	val = intel_dkl_phy_read(dev_priv, DKL_PLL_DIV1(tc_port), 2);
+	val &= ~(DKL_PLL_DIV1_IREF_TRIM_MASK |
+		 DKL_PLL_DIV1_TDC_TARGET_CNT_MASK);
+	val |= hw_state->mg_pll_div1;
+	intel_dkl_phy_write(dev_priv, DKL_PLL_DIV1(tc_port), 2, val);
+
+	val = intel_dkl_phy_read(dev_priv, DKL_PLL_SSC(tc_port), 2);
+	val &= ~(DKL_PLL_SSC_IREF_NDIV_RATIO_MASK |
+		 DKL_PLL_SSC_STEP_LEN_MASK |
+		 DKL_PLL_SSC_STEP_NUM_MASK |
+		 DKL_PLL_SSC_EN);
+	val |= hw_state->mg_pll_ssc;
+	intel_dkl_phy_write(dev_priv, DKL_PLL_SSC(tc_port), 2, val);
+
+	val = intel_dkl_phy_read(dev_priv, DKL_PLL_BIAS(tc_port), 2);
+	val &= ~(DKL_PLL_BIAS_FRAC_EN_H |
+		 DKL_PLL_BIAS_FBDIV_FRAC_MASK);
+	val |= hw_state->mg_pll_bias;
+	intel_dkl_phy_write(dev_priv, DKL_PLL_BIAS(tc_port), 2, val);
+
+	val = intel_dkl_phy_read(dev_priv, DKL_PLL_TDC_COLDST_BIAS(tc_port), 2);
+	val &= ~(DKL_PLL_TDC_SSC_STEP_SIZE_MASK |
+		 DKL_PLL_TDC_FEED_FWD_GAIN_MASK);
+	val |= hw_state->mg_pll_tdc_coldst_bias;
+	intel_dkl_phy_write(dev_priv, DKL_PLL_TDC_COLDST_BIAS(tc_port), 2, val);
+
+	intel_dkl_phy_posting_read(dev_priv, DKL_PLL_TDC_COLDST_BIAS(tc_port), 2);
+}
+
+static void icl_pll_power_enable(struct drm_i915_private *dev_priv,
+				 struct intel_shared_dpll *pll,
+				 i915_reg_t enable_reg)
+{
+	u32 val;
+
+	val = intel_de_read(dev_priv, enable_reg);
+	val |= PLL_POWER_ENABLE;
+	intel_de_write(dev_priv, enable_reg, val);
+
+	/*
+	 * The spec says we need to "wait" but it also says it should be
+	 * immediate.
+	 */
+	if (intel_de_wait_for_set(dev_priv, enable_reg, PLL_POWER_STATE, 1))
+		drm_err(&dev_priv->drm, "PLL %d Power not enabled\n",
+			pll->info->id);
+}
+
+static void icl_pll_enable(struct drm_i915_private *dev_priv,
+			   struct intel_shared_dpll *pll,
+			   i915_reg_t enable_reg)
+{
+	u32 val;
+
+	val = intel_de_read(dev_priv, enable_reg);
+	val |= PLL_ENABLE;
+	intel_de_write(dev_priv, enable_reg, val);
+
+	/* Timeout is actually 600us. */
+	if (intel_de_wait_for_set(dev_priv, enable_reg, PLL_LOCK, 1))
+		drm_err(&dev_priv->drm, "PLL %d not locked\n", pll->info->id);
+}
+
+static void adlp_cmtg_clock_gating_wa(struct drm_i915_private *i915, struct intel_shared_dpll *pll)
+{
+	u32 val;
+
+	if (!IS_ADLP_DISPLAY_STEP(i915, STEP_A0, STEP_B0) ||
+	    pll->info->id != DPLL_ID_ICL_DPLL0)
+		return;
+	/*
+	 * Wa_16011069516:adl-p[a0]
+	 *
+	 * All CMTG regs are unreliable until CMTG clock gating is disabled,
+	 * so we can only assume the default TRANS_CMTG_CHICKEN reg value and
+	 * sanity check this assumption with a double read, which presumably
+	 * returns the correct value even with clock gating on.
+	 *
+	 * Instead of the usual place for workarounds we apply this one here,
+	 * since TRANS_CMTG_CHICKEN is only accessible while DPLL0 is enabled.
+	 */
+	val = intel_de_read(i915, TRANS_CMTG_CHICKEN);
+	val = intel_de_read(i915, TRANS_CMTG_CHICKEN);
+	intel_de_write(i915, TRANS_CMTG_CHICKEN, DISABLE_DPT_CLK_GATING);
+	if (drm_WARN_ON(&i915->drm, val & ~DISABLE_DPT_CLK_GATING))
+		drm_dbg_kms(&i915->drm, "Unexpected flags in TRANS_CMTG_CHICKEN: %08x\n", val);
+}
+
+static void combo_pll_enable(struct drm_i915_private *dev_priv,
+			     struct intel_shared_dpll *pll)
+{
+	i915_reg_t enable_reg = intel_combo_pll_enable_reg(dev_priv, pll);
+
+	if (IS_JSL_EHL(dev_priv) &&
+	    pll->info->id == DPLL_ID_EHL_DPLL4) {
+
+		/*
+		 * We need to disable DC states when this DPLL is enabled.
+		 * This can be done by taking a reference on DPLL4 power
+		 * domain.
+		 */
+		pll->wakeref = intel_display_power_get(dev_priv,
+						       POWER_DOMAIN_DC_OFF);
+	}
+
+	icl_pll_power_enable(dev_priv, pll, enable_reg);
+
+	icl_dpll_write(dev_priv, pll);
+
+	/*
+	 * DVFS pre sequence would be here, but in our driver the cdclk code
+	 * paths should already be setting the appropriate voltage, hence we do
+	 * nothing here.
+	 */
+
+	icl_pll_enable(dev_priv, pll, enable_reg);
+
+	adlp_cmtg_clock_gating_wa(dev_priv, pll);
+
+	/* DVFS post sequence would be here. See the comment above. */
+}
+
+static void tbt_pll_enable(struct drm_i915_private *dev_priv,
+			   struct intel_shared_dpll *pll)
+{
+	icl_pll_power_enable(dev_priv, pll, TBT_PLL_ENABLE);
+
+	icl_dpll_write(dev_priv, pll);
+
+	/*
+	 * DVFS pre sequence would be here, but in our driver the cdclk code
+	 * paths should already be setting the appropriate voltage, hence we do
+	 * nothing here.
+	 */
+
+	icl_pll_enable(dev_priv, pll, TBT_PLL_ENABLE);
+
+	/* DVFS post sequence would be here. See the comment above. */
+}
+
+static void mg_pll_enable(struct drm_i915_private *dev_priv,
+			  struct intel_shared_dpll *pll)
+{
+	i915_reg_t enable_reg = intel_tc_pll_enable_reg(dev_priv, pll);
+
+	icl_pll_power_enable(dev_priv, pll, enable_reg);
+
+	if (DISPLAY_VER(dev_priv) >= 12)
+		dkl_pll_write(dev_priv, pll);
+	else
+		icl_mg_pll_write(dev_priv, pll);
+
+	/*
+	 * DVFS pre sequence would be here, but in our driver the cdclk code
+	 * paths should already be setting the appropriate voltage, hence we do
+	 * nothing here.
+	 */
+
+	icl_pll_enable(dev_priv, pll, enable_reg);
+
+	/* DVFS post sequence would be here. See the comment above. */
+}
+
+static void icl_pll_disable(struct drm_i915_private *dev_priv,
+			    struct intel_shared_dpll *pll,
+			    i915_reg_t enable_reg)
+{
+	u32 val;
+
+	/* The first steps are done by intel_ddi_post_disable(). */
+
+	/*
+	 * DVFS pre sequence would be here, but in our driver the cdclk code
+	 * paths should already be setting the appropriate voltage, hence we do
+	 * nothing here.
+	 */
+
+	val = intel_de_read(dev_priv, enable_reg);
+	val &= ~PLL_ENABLE;
+	intel_de_write(dev_priv, enable_reg, val);
+
+	/* Timeout is actually 1us. */
+	if (intel_de_wait_for_clear(dev_priv, enable_reg, PLL_LOCK, 1))
+		drm_err(&dev_priv->drm, "PLL %d locked\n", pll->info->id);
+
+	/* DVFS post sequence would be here. See the comment above. */
+
+	val = intel_de_read(dev_priv, enable_reg);
+	val &= ~PLL_POWER_ENABLE;
+	intel_de_write(dev_priv, enable_reg, val);
+
+	/*
+	 * The spec says we need to "wait" but it also says it should be
+	 * immediate.
+	 */
+	if (intel_de_wait_for_clear(dev_priv, enable_reg, PLL_POWER_STATE, 1))
+		drm_err(&dev_priv->drm, "PLL %d Power not disabled\n",
+			pll->info->id);
+}
+
+static void combo_pll_disable(struct drm_i915_private *dev_priv,
+			      struct intel_shared_dpll *pll)
+{
+	i915_reg_t enable_reg = intel_combo_pll_enable_reg(dev_priv, pll);
+
+	icl_pll_disable(dev_priv, pll, enable_reg);
+
+	if (IS_JSL_EHL(dev_priv) &&
+	    pll->info->id == DPLL_ID_EHL_DPLL4)
+		intel_display_power_put(dev_priv, POWER_DOMAIN_DC_OFF,
+					pll->wakeref);
+}
+
+static void tbt_pll_disable(struct drm_i915_private *dev_priv,
+			    struct intel_shared_dpll *pll)
+{
+	icl_pll_disable(dev_priv, pll, TBT_PLL_ENABLE);
+}
+
+static void mg_pll_disable(struct drm_i915_private *dev_priv,
+			   struct intel_shared_dpll *pll)
+{
+	i915_reg_t enable_reg = intel_tc_pll_enable_reg(dev_priv, pll);
+
+	icl_pll_disable(dev_priv, pll, enable_reg);
+}
+
+static void icl_update_dpll_ref_clks(struct drm_i915_private *i915)
+{
+	/* No SSC ref */
+	i915->display.dpll.ref_clks.nssc = i915->display.cdclk.hw.ref;
+}
+
+static void icl_dump_hw_state(struct drm_i915_private *dev_priv,
+			      const struct intel_dpll_hw_state *hw_state)
+{
+	drm_dbg_kms(&dev_priv->drm,
+		    "dpll_hw_state: cfgcr0: 0x%x, cfgcr1: 0x%x, div0: 0x%x, "
+		    "mg_refclkin_ctl: 0x%x, hg_clktop2_coreclkctl1: 0x%x, "
+		    "mg_clktop2_hsclkctl: 0x%x, mg_pll_div0: 0x%x, "
+		    "mg_pll_div2: 0x%x, mg_pll_lf: 0x%x, "
+		    "mg_pll_frac_lock: 0x%x, mg_pll_ssc: 0x%x, "
+		    "mg_pll_bias: 0x%x, mg_pll_tdc_coldst_bias: 0x%x\n",
+		    hw_state->cfgcr0, hw_state->cfgcr1,
+		    hw_state->div0,
+		    hw_state->mg_refclkin_ctl,
+		    hw_state->mg_clktop2_coreclkctl1,
+		    hw_state->mg_clktop2_hsclkctl,
+		    hw_state->mg_pll_div0,
+		    hw_state->mg_pll_div1,
+		    hw_state->mg_pll_lf,
+		    hw_state->mg_pll_frac_lock,
+		    hw_state->mg_pll_ssc,
+		    hw_state->mg_pll_bias,
+		    hw_state->mg_pll_tdc_coldst_bias);
+}
+
+static const struct intel_shared_dpll_funcs combo_pll_funcs = {
+	.enable = combo_pll_enable,
+	.disable = combo_pll_disable,
+	.get_hw_state = combo_pll_get_hw_state,
+	.get_freq = icl_ddi_combo_pll_get_freq,
+};
+
+static const struct intel_shared_dpll_funcs tbt_pll_funcs = {
+	.enable = tbt_pll_enable,
+	.disable = tbt_pll_disable,
+	.get_hw_state = tbt_pll_get_hw_state,
+	.get_freq = icl_ddi_tbt_pll_get_freq,
+};
+
+static const struct intel_shared_dpll_funcs mg_pll_funcs = {
+	.enable = mg_pll_enable,
+	.disable = mg_pll_disable,
+	.get_hw_state = mg_pll_get_hw_state,
+	.get_freq = icl_ddi_mg_pll_get_freq,
+};
+
+static const struct dpll_info icl_plls[] = {
+	{ "DPLL 0",   &combo_pll_funcs, DPLL_ID_ICL_DPLL0,  0 },
+	{ "DPLL 1",   &combo_pll_funcs, DPLL_ID_ICL_DPLL1,  0 },
+	{ "TBT PLL",  &tbt_pll_funcs, DPLL_ID_ICL_TBTPLL, 0 },
+	{ "MG PLL 1", &mg_pll_funcs, DPLL_ID_ICL_MGPLL1, 0 },
+	{ "MG PLL 2", &mg_pll_funcs, DPLL_ID_ICL_MGPLL2, 0 },
+	{ "MG PLL 3", &mg_pll_funcs, DPLL_ID_ICL_MGPLL3, 0 },
+	{ "MG PLL 4", &mg_pll_funcs, DPLL_ID_ICL_MGPLL4, 0 },
+	{ },
+};
+
+static const struct intel_dpll_mgr icl_pll_mgr = {
+	.dpll_info = icl_plls,
+	.compute_dplls = icl_compute_dplls,
+	.get_dplls = icl_get_dplls,
+	.put_dplls = icl_put_dplls,
+	.update_active_dpll = icl_update_active_dpll,
+	.update_ref_clks = icl_update_dpll_ref_clks,
+	.dump_hw_state = icl_dump_hw_state,
+};
+
+static const struct dpll_info ehl_plls[] = {
+	{ "DPLL 0", &combo_pll_funcs, DPLL_ID_ICL_DPLL0, 0 },
+	{ "DPLL 1", &combo_pll_funcs, DPLL_ID_ICL_DPLL1, 0 },
+	{ "DPLL 4", &combo_pll_funcs, DPLL_ID_EHL_DPLL4, 0 },
+	{ },
+};
+
+static const struct intel_dpll_mgr ehl_pll_mgr = {
+	.dpll_info = ehl_plls,
+	.compute_dplls = icl_compute_dplls,
+	.get_dplls = icl_get_dplls,
+	.put_dplls = icl_put_dplls,
+	.update_ref_clks = icl_update_dpll_ref_clks,
+	.dump_hw_state = icl_dump_hw_state,
+};
+
+static const struct intel_shared_dpll_funcs dkl_pll_funcs = {
+	.enable = mg_pll_enable,
+	.disable = mg_pll_disable,
+	.get_hw_state = dkl_pll_get_hw_state,
+	.get_freq = icl_ddi_mg_pll_get_freq,
+};
+
+static const struct dpll_info tgl_plls[] = {
+	{ "DPLL 0", &combo_pll_funcs, DPLL_ID_ICL_DPLL0,  0 },
+	{ "DPLL 1", &combo_pll_funcs, DPLL_ID_ICL_DPLL1,  0 },
+	{ "TBT PLL",  &tbt_pll_funcs, DPLL_ID_ICL_TBTPLL, 0 },
+	{ "TC PLL 1", &dkl_pll_funcs, DPLL_ID_ICL_MGPLL1, 0 },
+	{ "TC PLL 2", &dkl_pll_funcs, DPLL_ID_ICL_MGPLL2, 0 },
+	{ "TC PLL 3", &dkl_pll_funcs, DPLL_ID_ICL_MGPLL3, 0 },
+	{ "TC PLL 4", &dkl_pll_funcs, DPLL_ID_ICL_MGPLL4, 0 },
+	{ "TC PLL 5", &dkl_pll_funcs, DPLL_ID_TGL_MGPLL5, 0 },
+	{ "TC PLL 6", &dkl_pll_funcs, DPLL_ID_TGL_MGPLL6, 0 },
+	{ },
+};
+
+static const struct intel_dpll_mgr tgl_pll_mgr = {
+	.dpll_info = tgl_plls,
+	.compute_dplls = icl_compute_dplls,
+	.get_dplls = icl_get_dplls,
+	.put_dplls = icl_put_dplls,
+	.update_active_dpll = icl_update_active_dpll,
+	.update_ref_clks = icl_update_dpll_ref_clks,
+	.dump_hw_state = icl_dump_hw_state,
+};
+
+static const struct dpll_info rkl_plls[] = {
+	{ "DPLL 0", &combo_pll_funcs, DPLL_ID_ICL_DPLL0, 0 },
+	{ "DPLL 1", &combo_pll_funcs, DPLL_ID_ICL_DPLL1, 0 },
+	{ "DPLL 4", &combo_pll_funcs, DPLL_ID_EHL_DPLL4, 0 },
+	{ },
+};
+
+static const struct intel_dpll_mgr rkl_pll_mgr = {
+	.dpll_info = rkl_plls,
+	.compute_dplls = icl_compute_dplls,
+	.get_dplls = icl_get_dplls,
+	.put_dplls = icl_put_dplls,
+	.update_ref_clks = icl_update_dpll_ref_clks,
+	.dump_hw_state = icl_dump_hw_state,
+};
+
+static const struct dpll_info dg1_plls[] = {
+	{ "DPLL 0", &combo_pll_funcs, DPLL_ID_DG1_DPLL0, 0 },
+	{ "DPLL 1", &combo_pll_funcs, DPLL_ID_DG1_DPLL1, 0 },
+	{ "DPLL 2", &combo_pll_funcs, DPLL_ID_DG1_DPLL2, 0 },
+	{ "DPLL 3", &combo_pll_funcs, DPLL_ID_DG1_DPLL3, 0 },
+	{ },
+};
+
+static const struct intel_dpll_mgr dg1_pll_mgr = {
+	.dpll_info = dg1_plls,
+	.compute_dplls = icl_compute_dplls,
+	.get_dplls = icl_get_dplls,
+	.put_dplls = icl_put_dplls,
+	.update_ref_clks = icl_update_dpll_ref_clks,
+	.dump_hw_state = icl_dump_hw_state,
+};
+
+static const struct dpll_info adls_plls[] = {
+	{ "DPLL 0", &combo_pll_funcs, DPLL_ID_ICL_DPLL0, 0 },
+	{ "DPLL 1", &combo_pll_funcs, DPLL_ID_ICL_DPLL1, 0 },
+	{ "DPLL 2", &combo_pll_funcs, DPLL_ID_DG1_DPLL2, 0 },
+	{ "DPLL 3", &combo_pll_funcs, DPLL_ID_DG1_DPLL3, 0 },
+	{ },
+};
+
+static const struct intel_dpll_mgr adls_pll_mgr = {
+	.dpll_info = adls_plls,
+	.compute_dplls = icl_compute_dplls,
+	.get_dplls = icl_get_dplls,
+	.put_dplls = icl_put_dplls,
+	.update_ref_clks = icl_update_dpll_ref_clks,
+	.dump_hw_state = icl_dump_hw_state,
+};
+
+static const struct dpll_info adlp_plls[] = {
+	{ "DPLL 0", &combo_pll_funcs, DPLL_ID_ICL_DPLL0,  0 },
+	{ "DPLL 1", &combo_pll_funcs, DPLL_ID_ICL_DPLL1,  0 },
+	{ "TBT PLL",  &tbt_pll_funcs, DPLL_ID_ICL_TBTPLL, 0 },
+	{ "TC PLL 1", &dkl_pll_funcs, DPLL_ID_ICL_MGPLL1, 0 },
+	{ "TC PLL 2", &dkl_pll_funcs, DPLL_ID_ICL_MGPLL2, 0 },
+	{ "TC PLL 3", &dkl_pll_funcs, DPLL_ID_ICL_MGPLL3, 0 },
+	{ "TC PLL 4", &dkl_pll_funcs, DPLL_ID_ICL_MGPLL4, 0 },
+	{ },
+};
+
+static const struct intel_dpll_mgr adlp_pll_mgr = {
+	.dpll_info = adlp_plls,
+	.compute_dplls = icl_compute_dplls,
+	.get_dplls = icl_get_dplls,
+	.put_dplls = icl_put_dplls,
+	.update_active_dpll = icl_update_active_dpll,
+	.update_ref_clks = icl_update_dpll_ref_clks,
+	.dump_hw_state = icl_dump_hw_state,
+};
+
+/**
+ * intel_shared_dpll_init - Initialize shared DPLLs
+ * @dev_priv: i915 device
+ *
+ * Initialize shared DPLLs for @dev_priv.
+ */
+void intel_shared_dpll_init(struct drm_i915_private *dev_priv)
+{
+	const struct intel_dpll_mgr *dpll_mgr = NULL;
+	const struct dpll_info *dpll_info;
+	int i;
+
+	if (IS_DG2(dev_priv))
+		/* No shared DPLLs on DG2; port PLLs are part of the PHY */
+		dpll_mgr = NULL;
+	else if (IS_ALDERLAKE_P(dev_priv))
+		dpll_mgr = &adlp_pll_mgr;
+	else if (IS_ALDERLAKE_S(dev_priv))
+		dpll_mgr = &adls_pll_mgr;
+	else if (IS_DG1(dev_priv))
+		dpll_mgr = &dg1_pll_mgr;
+	else if (IS_ROCKETLAKE(dev_priv))
+		dpll_mgr = &rkl_pll_mgr;
+	else if (DISPLAY_VER(dev_priv) >= 12)
+		dpll_mgr = &tgl_pll_mgr;
+	else if (IS_JSL_EHL(dev_priv))
+		dpll_mgr = &ehl_pll_mgr;
+	else if (DISPLAY_VER(dev_priv) >= 11)
+		dpll_mgr = &icl_pll_mgr;
+	else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
+		dpll_mgr = &bxt_pll_mgr;
+	else if (DISPLAY_VER(dev_priv) == 9)
+		dpll_mgr = &skl_pll_mgr;
+	else if (HAS_DDI(dev_priv))
+		dpll_mgr = &hsw_pll_mgr;
+	else if (HAS_PCH_IBX(dev_priv) || HAS_PCH_CPT(dev_priv))
+		dpll_mgr = &pch_pll_mgr;
+
+	if (!dpll_mgr) {
+		dev_priv->display.dpll.num_shared_dpll = 0;
+		return;
+	}
+
+	dpll_info = dpll_mgr->dpll_info;
+
+	for (i = 0; dpll_info[i].name; i++) {
+		if (drm_WARN_ON(&dev_priv->drm,
+				i >= ARRAY_SIZE(dev_priv->display.dpll.shared_dplls)))
+			break;
+
+		drm_WARN_ON(&dev_priv->drm, i != dpll_info[i].id);
+		dev_priv->display.dpll.shared_dplls[i].info = &dpll_info[i];
+	}
+
+	dev_priv->display.dpll.mgr = dpll_mgr;
+	dev_priv->display.dpll.num_shared_dpll = i;
+	mutex_init(&dev_priv->display.dpll.lock);
+}
+
+/**
+ * intel_compute_shared_dplls - compute DPLL state CRTC and encoder combination
+ * @state: atomic state
+ * @crtc: CRTC to compute DPLLs for
+ * @encoder: encoder
+ *
+ * This function computes the DPLL state for the given CRTC and encoder.
+ *
+ * The new configuration in the atomic commit @state is made effective by
+ * calling intel_shared_dpll_swap_state().
+ *
+ * Returns:
+ * 0 on success, negative error code on falure.
+ */
+int intel_compute_shared_dplls(struct intel_atomic_state *state,
+			       struct intel_crtc *crtc,
+			       struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	const struct intel_dpll_mgr *dpll_mgr = dev_priv->display.dpll.mgr;
+
+	if (drm_WARN_ON(&dev_priv->drm, !dpll_mgr))
+		return -EINVAL;
+
+	return dpll_mgr->compute_dplls(state, crtc, encoder);
+}
+
+/**
+ * intel_reserve_shared_dplls - reserve DPLLs for CRTC and encoder combination
+ * @state: atomic state
+ * @crtc: CRTC to reserve DPLLs for
+ * @encoder: encoder
+ *
+ * This function reserves all required DPLLs for the given CRTC and encoder
+ * combination in the current atomic commit @state and the new @crtc atomic
+ * state.
+ *
+ * The new configuration in the atomic commit @state is made effective by
+ * calling intel_shared_dpll_swap_state().
+ *
+ * The reserved DPLLs should be released by calling
+ * intel_release_shared_dplls().
+ *
+ * Returns:
+ * 0 if all required DPLLs were successfully reserved,
+ * negative error code otherwise.
+ */
+int intel_reserve_shared_dplls(struct intel_atomic_state *state,
+			       struct intel_crtc *crtc,
+			       struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	const struct intel_dpll_mgr *dpll_mgr = dev_priv->display.dpll.mgr;
+
+	if (drm_WARN_ON(&dev_priv->drm, !dpll_mgr))
+		return -EINVAL;
+
+	return dpll_mgr->get_dplls(state, crtc, encoder);
+}
+
+/**
+ * intel_release_shared_dplls - end use of DPLLs by CRTC in atomic state
+ * @state: atomic state
+ * @crtc: crtc from which the DPLLs are to be released
+ *
+ * This function releases all DPLLs reserved by intel_reserve_shared_dplls()
+ * from the current atomic commit @state and the old @crtc atomic state.
+ *
+ * The new configuration in the atomic commit @state is made effective by
+ * calling intel_shared_dpll_swap_state().
+ */
+void intel_release_shared_dplls(struct intel_atomic_state *state,
+				struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	const struct intel_dpll_mgr *dpll_mgr = dev_priv->display.dpll.mgr;
+
+	/*
+	 * FIXME: this function is called for every platform having a
+	 * compute_clock hook, even though the platform doesn't yet support
+	 * the shared DPLL framework and intel_reserve_shared_dplls() is not
+	 * called on those.
+	 */
+	if (!dpll_mgr)
+		return;
+
+	dpll_mgr->put_dplls(state, crtc);
+}
+
+/**
+ * intel_update_active_dpll - update the active DPLL for a CRTC/encoder
+ * @state: atomic state
+ * @crtc: the CRTC for which to update the active DPLL
+ * @encoder: encoder determining the type of port DPLL
+ *
+ * Update the active DPLL for the given @crtc/@encoder in @crtc's atomic state,
+ * from the port DPLLs reserved previously by intel_reserve_shared_dplls(). The
+ * DPLL selected will be based on the current mode of the encoder's port.
+ */
+void intel_update_active_dpll(struct intel_atomic_state *state,
+			      struct intel_crtc *crtc,
+			      struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	const struct intel_dpll_mgr *dpll_mgr = dev_priv->display.dpll.mgr;
+
+	if (drm_WARN_ON(&dev_priv->drm, !dpll_mgr))
+		return;
+
+	dpll_mgr->update_active_dpll(state, crtc, encoder);
+}
+
+/**
+ * intel_dpll_get_freq - calculate the DPLL's output frequency
+ * @i915: i915 device
+ * @pll: DPLL for which to calculate the output frequency
+ * @pll_state: DPLL state from which to calculate the output frequency
+ *
+ * Return the output frequency corresponding to @pll's passed in @pll_state.
+ */
+int intel_dpll_get_freq(struct drm_i915_private *i915,
+			const struct intel_shared_dpll *pll,
+			const struct intel_dpll_hw_state *pll_state)
+{
+	if (drm_WARN_ON(&i915->drm, !pll->info->funcs->get_freq))
+		return 0;
+
+	return pll->info->funcs->get_freq(i915, pll, pll_state);
+}
+
+/**
+ * intel_dpll_get_hw_state - readout the DPLL's hardware state
+ * @i915: i915 device
+ * @pll: DPLL for which to calculate the output frequency
+ * @hw_state: DPLL's hardware state
+ *
+ * Read out @pll's hardware state into @hw_state.
+ */
+bool intel_dpll_get_hw_state(struct drm_i915_private *i915,
+			     struct intel_shared_dpll *pll,
+			     struct intel_dpll_hw_state *hw_state)
+{
+	return pll->info->funcs->get_hw_state(i915, pll, hw_state);
+}
+
+static void readout_dpll_hw_state(struct drm_i915_private *i915,
+				  struct intel_shared_dpll *pll)
+{
+	struct intel_crtc *crtc;
+
+	pll->on = intel_dpll_get_hw_state(i915, pll, &pll->state.hw_state);
+
+	if (IS_JSL_EHL(i915) && pll->on &&
+	    pll->info->id == DPLL_ID_EHL_DPLL4) {
+		pll->wakeref = intel_display_power_get(i915,
+						       POWER_DOMAIN_DC_OFF);
+	}
+
+	pll->state.pipe_mask = 0;
+	for_each_intel_crtc(&i915->drm, crtc) {
+		struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+
+		if (crtc_state->hw.active && crtc_state->shared_dpll == pll)
+			pll->state.pipe_mask |= BIT(crtc->pipe);
+	}
+	pll->active_mask = pll->state.pipe_mask;
+
+	drm_dbg_kms(&i915->drm,
+		    "%s hw state readout: pipe_mask 0x%x, on %i\n",
+		    pll->info->name, pll->state.pipe_mask, pll->on);
+}
+
+void intel_dpll_update_ref_clks(struct drm_i915_private *i915)
+{
+	if (i915->display.dpll.mgr && i915->display.dpll.mgr->update_ref_clks)
+		i915->display.dpll.mgr->update_ref_clks(i915);
+}
+
+void intel_dpll_readout_hw_state(struct drm_i915_private *i915)
+{
+	int i;
+
+	for (i = 0; i < i915->display.dpll.num_shared_dpll; i++)
+		readout_dpll_hw_state(i915, &i915->display.dpll.shared_dplls[i]);
+}
+
+static void sanitize_dpll_state(struct drm_i915_private *i915,
+				struct intel_shared_dpll *pll)
+{
+	if (!pll->on)
+		return;
+
+	adlp_cmtg_clock_gating_wa(i915, pll);
+
+	if (pll->active_mask)
+		return;
+
+	drm_dbg_kms(&i915->drm,
+		    "%s enabled but not in use, disabling\n",
+		    pll->info->name);
+
+	pll->info->funcs->disable(i915, pll);
+	pll->on = false;
+}
+
+void intel_dpll_sanitize_state(struct drm_i915_private *i915)
+{
+	int i;
+
+	for (i = 0; i < i915->display.dpll.num_shared_dpll; i++)
+		sanitize_dpll_state(i915, &i915->display.dpll.shared_dplls[i]);
+}
+
+/**
+ * intel_dpll_dump_hw_state - write hw_state to dmesg
+ * @dev_priv: i915 drm device
+ * @hw_state: hw state to be written to the log
+ *
+ * Write the relevant values in @hw_state to dmesg using drm_dbg_kms.
+ */
+void intel_dpll_dump_hw_state(struct drm_i915_private *dev_priv,
+			      const struct intel_dpll_hw_state *hw_state)
+{
+	if (dev_priv->display.dpll.mgr) {
+		dev_priv->display.dpll.mgr->dump_hw_state(dev_priv, hw_state);
+	} else {
+		/* fallback for platforms that don't use the shared dpll
+		 * infrastructure
+		 */
+		drm_dbg_kms(&dev_priv->drm,
+			    "dpll_hw_state: dpll: 0x%x, dpll_md: 0x%x, "
+			    "fp0: 0x%x, fp1: 0x%x\n",
+			    hw_state->dpll,
+			    hw_state->dpll_md,
+			    hw_state->fp0,
+			    hw_state->fp1);
+	}
+}
+
+static void
+verify_single_dpll_state(struct drm_i915_private *dev_priv,
+			 struct intel_shared_dpll *pll,
+			 struct intel_crtc *crtc,
+			 struct intel_crtc_state *new_crtc_state)
+{
+	struct intel_dpll_hw_state dpll_hw_state;
+	u8 pipe_mask;
+	bool active;
+
+	memset(&dpll_hw_state, 0, sizeof(dpll_hw_state));
+
+	drm_dbg_kms(&dev_priv->drm, "%s\n", pll->info->name);
+
+	active = intel_dpll_get_hw_state(dev_priv, pll, &dpll_hw_state);
+
+	if (!(pll->info->flags & INTEL_DPLL_ALWAYS_ON)) {
+		I915_STATE_WARN(!pll->on && pll->active_mask,
+				"pll in active use but not on in sw tracking\n");
+		I915_STATE_WARN(pll->on && !pll->active_mask,
+				"pll is on but not used by any active pipe\n");
+		I915_STATE_WARN(pll->on != active,
+				"pll on state mismatch (expected %i, found %i)\n",
+				pll->on, active);
+	}
+
+	if (!crtc) {
+		I915_STATE_WARN(pll->active_mask & ~pll->state.pipe_mask,
+				"more active pll users than references: 0x%x vs 0x%x\n",
+				pll->active_mask, pll->state.pipe_mask);
+
+		return;
+	}
+
+	pipe_mask = BIT(crtc->pipe);
+
+	if (new_crtc_state->hw.active)
+		I915_STATE_WARN(!(pll->active_mask & pipe_mask),
+				"pll active mismatch (expected pipe %c in active mask 0x%x)\n",
+				pipe_name(crtc->pipe), pll->active_mask);
+	else
+		I915_STATE_WARN(pll->active_mask & pipe_mask,
+				"pll active mismatch (didn't expect pipe %c in active mask 0x%x)\n",
+				pipe_name(crtc->pipe), pll->active_mask);
+
+	I915_STATE_WARN(!(pll->state.pipe_mask & pipe_mask),
+			"pll enabled crtcs mismatch (expected 0x%x in 0x%x)\n",
+			pipe_mask, pll->state.pipe_mask);
+
+	I915_STATE_WARN(pll->on && memcmp(&pll->state.hw_state,
+					  &dpll_hw_state,
+					  sizeof(dpll_hw_state)),
+			"pll hw state mismatch\n");
+}
+
+void intel_shared_dpll_state_verify(struct intel_crtc *crtc,
+				    struct intel_crtc_state *old_crtc_state,
+				    struct intel_crtc_state *new_crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+
+	if (new_crtc_state->shared_dpll)
+		verify_single_dpll_state(dev_priv, new_crtc_state->shared_dpll,
+					 crtc, new_crtc_state);
+
+	if (old_crtc_state->shared_dpll &&
+	    old_crtc_state->shared_dpll != new_crtc_state->shared_dpll) {
+		u8 pipe_mask = BIT(crtc->pipe);
+		struct intel_shared_dpll *pll = old_crtc_state->shared_dpll;
+
+		I915_STATE_WARN(pll->active_mask & pipe_mask,
+				"pll active mismatch (didn't expect pipe %c in active mask (0x%x))\n",
+				pipe_name(crtc->pipe), pll->active_mask);
+		I915_STATE_WARN(pll->state.pipe_mask & pipe_mask,
+				"pll enabled crtcs mismatch (found %x in enabled mask (0x%x))\n",
+				pipe_name(crtc->pipe), pll->state.pipe_mask);
+	}
+}
+
+void intel_shared_dpll_verify_disabled(struct drm_i915_private *i915)
+{
+	int i;
+
+	for (i = 0; i < i915->display.dpll.num_shared_dpll; i++)
+		verify_single_dpll_state(i915, &i915->display.dpll.shared_dplls[i],
+					 NULL, NULL);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_dpll_mgr.h b/drivers/gpu/drm/i915/display/intel_dpll_mgr.h
new file mode 100644
index 000000000..3247dc300
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dpll_mgr.h
@@ -0,0 +1,376 @@
+/*
+ * Copyright © 2012-2016 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ */
+
+#ifndef _INTEL_DPLL_MGR_H_
+#define _INTEL_DPLL_MGR_H_
+
+#include <linux/types.h>
+
+#include "intel_wakeref.h"
+
+/*FIXME: Move this to a more appropriate place. */
+#define abs_diff(a, b) ({			\
+	typeof(a) __a = (a);			\
+	typeof(b) __b = (b);			\
+	(void) (&__a == &__b);			\
+	__a > __b ? (__a - __b) : (__b - __a); })
+
+enum tc_port;
+struct drm_i915_private;
+struct intel_atomic_state;
+struct intel_crtc;
+struct intel_crtc_state;
+struct intel_encoder;
+struct intel_shared_dpll;
+struct intel_shared_dpll_funcs;
+
+/**
+ * enum intel_dpll_id - possible DPLL ids
+ *
+ * Enumeration of possible IDs for a DPLL. Real shared dpll ids must be >= 0.
+ */
+enum intel_dpll_id {
+	/**
+	 * @DPLL_ID_PRIVATE: non-shared dpll in use
+	 */
+	DPLL_ID_PRIVATE = -1,
+
+	/**
+	 * @DPLL_ID_PCH_PLL_A: DPLL A in ILK, SNB and IVB
+	 */
+	DPLL_ID_PCH_PLL_A = 0,
+	/**
+	 * @DPLL_ID_PCH_PLL_B: DPLL B in ILK, SNB and IVB
+	 */
+	DPLL_ID_PCH_PLL_B = 1,
+
+
+	/**
+	 * @DPLL_ID_WRPLL1: HSW and BDW WRPLL1
+	 */
+	DPLL_ID_WRPLL1 = 0,
+	/**
+	 * @DPLL_ID_WRPLL2: HSW and BDW WRPLL2
+	 */
+	DPLL_ID_WRPLL2 = 1,
+	/**
+	 * @DPLL_ID_SPLL: HSW and BDW SPLL
+	 */
+	DPLL_ID_SPLL = 2,
+	/**
+	 * @DPLL_ID_LCPLL_810: HSW and BDW 0.81 GHz LCPLL
+	 */
+	DPLL_ID_LCPLL_810 = 3,
+	/**
+	 * @DPLL_ID_LCPLL_1350: HSW and BDW 1.35 GHz LCPLL
+	 */
+	DPLL_ID_LCPLL_1350 = 4,
+	/**
+	 * @DPLL_ID_LCPLL_2700: HSW and BDW 2.7 GHz LCPLL
+	 */
+	DPLL_ID_LCPLL_2700 = 5,
+
+
+	/**
+	 * @DPLL_ID_SKL_DPLL0: SKL and later DPLL0
+	 */
+	DPLL_ID_SKL_DPLL0 = 0,
+	/**
+	 * @DPLL_ID_SKL_DPLL1: SKL and later DPLL1
+	 */
+	DPLL_ID_SKL_DPLL1 = 1,
+	/**
+	 * @DPLL_ID_SKL_DPLL2: SKL and later DPLL2
+	 */
+	DPLL_ID_SKL_DPLL2 = 2,
+	/**
+	 * @DPLL_ID_SKL_DPLL3: SKL and later DPLL3
+	 */
+	DPLL_ID_SKL_DPLL3 = 3,
+
+
+	/**
+	 * @DPLL_ID_ICL_DPLL0: ICL/TGL combo PHY DPLL0
+	 */
+	DPLL_ID_ICL_DPLL0 = 0,
+	/**
+	 * @DPLL_ID_ICL_DPLL1: ICL/TGL combo PHY DPLL1
+	 */
+	DPLL_ID_ICL_DPLL1 = 1,
+	/**
+	 * @DPLL_ID_EHL_DPLL4: EHL combo PHY DPLL4
+	 */
+	DPLL_ID_EHL_DPLL4 = 2,
+	/**
+	 * @DPLL_ID_ICL_TBTPLL: ICL/TGL TBT PLL
+	 */
+	DPLL_ID_ICL_TBTPLL = 2,
+	/**
+	 * @DPLL_ID_ICL_MGPLL1: ICL MG PLL 1 port 1 (C),
+	 *                      TGL TC PLL 1 port 1 (TC1)
+	 */
+	DPLL_ID_ICL_MGPLL1 = 3,
+	/**
+	 * @DPLL_ID_ICL_MGPLL2: ICL MG PLL 1 port 2 (D)
+	 *                      TGL TC PLL 1 port 2 (TC2)
+	 */
+	DPLL_ID_ICL_MGPLL2 = 4,
+	/**
+	 * @DPLL_ID_ICL_MGPLL3: ICL MG PLL 1 port 3 (E)
+	 *                      TGL TC PLL 1 port 3 (TC3)
+	 */
+	DPLL_ID_ICL_MGPLL3 = 5,
+	/**
+	 * @DPLL_ID_ICL_MGPLL4: ICL MG PLL 1 port 4 (F)
+	 *                      TGL TC PLL 1 port 4 (TC4)
+	 */
+	DPLL_ID_ICL_MGPLL4 = 6,
+	/**
+	 * @DPLL_ID_TGL_MGPLL5: TGL TC PLL port 5 (TC5)
+	 */
+	DPLL_ID_TGL_MGPLL5 = 7,
+	/**
+	 * @DPLL_ID_TGL_MGPLL6: TGL TC PLL port 6 (TC6)
+	 */
+	DPLL_ID_TGL_MGPLL6 = 8,
+
+	/**
+	 * @DPLL_ID_DG1_DPLL0: DG1 combo PHY DPLL0
+	 */
+	DPLL_ID_DG1_DPLL0 = 0,
+	/**
+	 * @DPLL_ID_DG1_DPLL1: DG1 combo PHY DPLL1
+	 */
+	DPLL_ID_DG1_DPLL1 = 1,
+	/**
+	 * @DPLL_ID_DG1_DPLL2: DG1 combo PHY DPLL2
+	 */
+	DPLL_ID_DG1_DPLL2 = 2,
+	/**
+	 * @DPLL_ID_DG1_DPLL3: DG1 combo PHY DPLL3
+	 */
+	DPLL_ID_DG1_DPLL3 = 3,
+};
+
+#define I915_NUM_PLLS 9
+
+enum icl_port_dpll_id {
+	ICL_PORT_DPLL_DEFAULT,
+	ICL_PORT_DPLL_MG_PHY,
+
+	ICL_PORT_DPLL_COUNT,
+};
+
+struct intel_dpll_hw_state {
+	/* i9xx, pch plls */
+	u32 dpll;
+	u32 dpll_md;
+	u32 fp0;
+	u32 fp1;
+
+	/* hsw, bdw */
+	u32 wrpll;
+	u32 spll;
+
+	/* skl */
+	/*
+	 * DPLL_CTRL1 has 6 bits for each each this DPLL. We store those in
+	 * lower part of ctrl1 and they get shifted into position when writing
+	 * the register.  This allows us to easily compare the state to share
+	 * the DPLL.
+	 */
+	u32 ctrl1;
+	/* HDMI only, 0 when used for DP */
+	u32 cfgcr1, cfgcr2;
+
+	/* icl */
+	u32 cfgcr0;
+
+	/* tgl */
+	u32 div0;
+
+	/* bxt */
+	u32 ebb0, ebb4, pll0, pll1, pll2, pll3, pll6, pll8, pll9, pll10, pcsdw12;
+
+	/*
+	 * ICL uses the following, already defined:
+	 * u32 cfgcr0, cfgcr1;
+	 */
+	u32 mg_refclkin_ctl;
+	u32 mg_clktop2_coreclkctl1;
+	u32 mg_clktop2_hsclkctl;
+	u32 mg_pll_div0;
+	u32 mg_pll_div1;
+	u32 mg_pll_lf;
+	u32 mg_pll_frac_lock;
+	u32 mg_pll_ssc;
+	u32 mg_pll_bias;
+	u32 mg_pll_tdc_coldst_bias;
+	u32 mg_pll_bias_mask;
+	u32 mg_pll_tdc_coldst_bias_mask;
+};
+
+/**
+ * struct intel_shared_dpll_state - hold the DPLL atomic state
+ *
+ * This structure holds an atomic state for the DPLL, that can represent
+ * either its current state (in struct &intel_shared_dpll) or a desired
+ * future state which would be applied by an atomic mode set (stored in
+ * a struct &intel_atomic_state).
+ *
+ * See also intel_reserve_shared_dplls() and intel_release_shared_dplls().
+ */
+struct intel_shared_dpll_state {
+	/**
+	 * @pipe_mask: mask of pipes using this DPLL, active or not
+	 */
+	u8 pipe_mask;
+
+	/**
+	 * @hw_state: hardware configuration for the DPLL stored in
+	 * struct &intel_dpll_hw_state.
+	 */
+	struct intel_dpll_hw_state hw_state;
+};
+
+/**
+ * struct dpll_info - display PLL platform specific info
+ */
+struct dpll_info {
+	/**
+	 * @name: DPLL name; used for logging
+	 */
+	const char *name;
+
+	/**
+	 * @funcs: platform specific hooks
+	 */
+	const struct intel_shared_dpll_funcs *funcs;
+
+	/**
+	 * @id: unique indentifier for this DPLL; should match the index in the
+	 * dev_priv->shared_dplls array
+	 */
+	enum intel_dpll_id id;
+
+#define INTEL_DPLL_ALWAYS_ON	(1 << 0)
+	/**
+	 * @flags:
+	 *
+	 * INTEL_DPLL_ALWAYS_ON
+	 *     Inform the state checker that the DPLL is kept enabled even if
+	 *     not in use by any CRTC.
+	 */
+	u32 flags;
+};
+
+/**
+ * struct intel_shared_dpll - display PLL with tracked state and users
+ */
+struct intel_shared_dpll {
+	/**
+	 * @state:
+	 *
+	 * Store the state for the pll, including its hw state
+	 * and CRTCs using it.
+	 */
+	struct intel_shared_dpll_state state;
+
+	/**
+	 * @active_mask: mask of active pipes (i.e. DPMS on) using this DPLL
+	 */
+	u8 active_mask;
+
+	/**
+	 * @on: is the PLL actually active? Disabled during modeset
+	 */
+	bool on;
+
+	/**
+	 * @info: platform specific info
+	 */
+	const struct dpll_info *info;
+
+	/**
+	 * @wakeref: In some platforms a device-level runtime pm reference may
+	 * need to be grabbed to disable DC states while this DPLL is enabled
+	 */
+	intel_wakeref_t wakeref;
+};
+
+#define SKL_DPLL0 0
+#define SKL_DPLL1 1
+#define SKL_DPLL2 2
+#define SKL_DPLL3 3
+
+/* shared dpll functions */
+struct intel_shared_dpll *
+intel_get_shared_dpll_by_id(struct drm_i915_private *dev_priv,
+			    enum intel_dpll_id id);
+enum intel_dpll_id
+intel_get_shared_dpll_id(struct drm_i915_private *dev_priv,
+			 struct intel_shared_dpll *pll);
+void assert_shared_dpll(struct drm_i915_private *dev_priv,
+			struct intel_shared_dpll *pll,
+			bool state);
+#define assert_shared_dpll_enabled(d, p) assert_shared_dpll(d, p, true)
+#define assert_shared_dpll_disabled(d, p) assert_shared_dpll(d, p, false)
+int intel_compute_shared_dplls(struct intel_atomic_state *state,
+			       struct intel_crtc *crtc,
+			       struct intel_encoder *encoder);
+int intel_reserve_shared_dplls(struct intel_atomic_state *state,
+			       struct intel_crtc *crtc,
+			       struct intel_encoder *encoder);
+void intel_release_shared_dplls(struct intel_atomic_state *state,
+				struct intel_crtc *crtc);
+void icl_set_active_port_dpll(struct intel_crtc_state *crtc_state,
+			      enum icl_port_dpll_id port_dpll_id);
+void intel_update_active_dpll(struct intel_atomic_state *state,
+			      struct intel_crtc *crtc,
+			      struct intel_encoder *encoder);
+int intel_dpll_get_freq(struct drm_i915_private *i915,
+			const struct intel_shared_dpll *pll,
+			const struct intel_dpll_hw_state *pll_state);
+bool intel_dpll_get_hw_state(struct drm_i915_private *i915,
+			     struct intel_shared_dpll *pll,
+			     struct intel_dpll_hw_state *hw_state);
+void intel_enable_shared_dpll(const struct intel_crtc_state *crtc_state);
+void intel_disable_shared_dpll(const struct intel_crtc_state *crtc_state);
+void intel_shared_dpll_swap_state(struct intel_atomic_state *state);
+void intel_shared_dpll_init(struct drm_i915_private *dev_priv);
+void intel_dpll_update_ref_clks(struct drm_i915_private *dev_priv);
+void intel_dpll_readout_hw_state(struct drm_i915_private *dev_priv);
+void intel_dpll_sanitize_state(struct drm_i915_private *dev_priv);
+
+void intel_dpll_dump_hw_state(struct drm_i915_private *dev_priv,
+			      const struct intel_dpll_hw_state *hw_state);
+enum intel_dpll_id icl_tc_port_to_pll_id(enum tc_port tc_port);
+bool intel_dpll_is_combophy(enum intel_dpll_id id);
+
+void intel_shared_dpll_state_verify(struct intel_crtc *crtc,
+				    struct intel_crtc_state *old_crtc_state,
+				    struct intel_crtc_state *new_crtc_state);
+void intel_shared_dpll_verify_disabled(struct drm_i915_private *i915);
+
+#endif /* _INTEL_DPLL_MGR_H_ */
diff --git a/drivers/gpu/drm/i915/display/intel_dpt.c b/drivers/gpu/drm/i915/display/intel_dpt.c
new file mode 100644
index 000000000..ea8a08b9c
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dpt.c
@@ -0,0 +1,316 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#include "gem/i915_gem_domain.h"
+#include "gem/i915_gem_internal.h"
+#include "gt/gen8_ppgtt.h"
+
+#include "i915_drv.h"
+#include "intel_display_types.h"
+#include "intel_dpt.h"
+#include "intel_fb.h"
+
+struct i915_dpt {
+	struct i915_address_space vm;
+
+	struct drm_i915_gem_object *obj;
+	struct i915_vma *vma;
+	void __iomem *iomem;
+};
+
+#define i915_is_dpt(vm) ((vm)->is_dpt)
+
+static inline struct i915_dpt *
+i915_vm_to_dpt(struct i915_address_space *vm)
+{
+	BUILD_BUG_ON(offsetof(struct i915_dpt, vm));
+	GEM_BUG_ON(!i915_is_dpt(vm));
+	return container_of(vm, struct i915_dpt, vm);
+}
+
+#define dpt_total_entries(dpt) ((dpt)->vm.total >> PAGE_SHIFT)
+
+static void gen8_set_pte(void __iomem *addr, gen8_pte_t pte)
+{
+	writeq(pte, addr);
+}
+
+static void dpt_insert_page(struct i915_address_space *vm,
+			    dma_addr_t addr,
+			    u64 offset,
+			    enum i915_cache_level level,
+			    u32 flags)
+{
+	struct i915_dpt *dpt = i915_vm_to_dpt(vm);
+	gen8_pte_t __iomem *base = dpt->iomem;
+
+	gen8_set_pte(base + offset / I915_GTT_PAGE_SIZE,
+		     vm->pte_encode(addr, level, flags));
+}
+
+static void dpt_insert_entries(struct i915_address_space *vm,
+			       struct i915_vma_resource *vma_res,
+			       enum i915_cache_level level,
+			       u32 flags)
+{
+	struct i915_dpt *dpt = i915_vm_to_dpt(vm);
+	gen8_pte_t __iomem *base = dpt->iomem;
+	const gen8_pte_t pte_encode = vm->pte_encode(0, level, flags);
+	struct sgt_iter sgt_iter;
+	dma_addr_t addr;
+	int i;
+
+	/*
+	 * Note that we ignore PTE_READ_ONLY here. The caller must be careful
+	 * not to allow the user to override access to a read only page.
+	 */
+
+	i = vma_res->start / I915_GTT_PAGE_SIZE;
+	for_each_sgt_daddr(addr, sgt_iter, vma_res->bi.pages)
+		gen8_set_pte(&base[i++], pte_encode | addr);
+}
+
+static void dpt_clear_range(struct i915_address_space *vm,
+			    u64 start, u64 length)
+{
+}
+
+static void dpt_bind_vma(struct i915_address_space *vm,
+			 struct i915_vm_pt_stash *stash,
+			 struct i915_vma_resource *vma_res,
+			 enum i915_cache_level cache_level,
+			 u32 flags)
+{
+	u32 pte_flags;
+
+	if (vma_res->bound_flags)
+		return;
+
+	/* Applicable to VLV (gen8+ do not support RO in the GGTT) */
+	pte_flags = 0;
+	if (vm->has_read_only && vma_res->bi.readonly)
+		pte_flags |= PTE_READ_ONLY;
+	if (vma_res->bi.lmem)
+		pte_flags |= PTE_LM;
+
+	vm->insert_entries(vm, vma_res, cache_level, pte_flags);
+
+	vma_res->page_sizes_gtt = I915_GTT_PAGE_SIZE;
+
+	/*
+	 * Without aliasing PPGTT there's no difference between
+	 * GLOBAL/LOCAL_BIND, it's all the same ptes. Hence unconditionally
+	 * upgrade to both bound if we bind either to avoid double-binding.
+	 */
+	vma_res->bound_flags = I915_VMA_GLOBAL_BIND | I915_VMA_LOCAL_BIND;
+}
+
+static void dpt_unbind_vma(struct i915_address_space *vm,
+			   struct i915_vma_resource *vma_res)
+{
+	vm->clear_range(vm, vma_res->start, vma_res->vma_size);
+}
+
+static void dpt_cleanup(struct i915_address_space *vm)
+{
+	struct i915_dpt *dpt = i915_vm_to_dpt(vm);
+
+	i915_gem_object_put(dpt->obj);
+}
+
+struct i915_vma *intel_dpt_pin(struct i915_address_space *vm)
+{
+	struct drm_i915_private *i915 = vm->i915;
+	struct i915_dpt *dpt = i915_vm_to_dpt(vm);
+	intel_wakeref_t wakeref;
+	struct i915_vma *vma;
+	void __iomem *iomem;
+	struct i915_gem_ww_ctx ww;
+	u64 pin_flags = 0;
+	int err;
+
+	if (i915_gem_object_is_stolen(dpt->obj))
+		pin_flags |= PIN_MAPPABLE;
+
+	wakeref = intel_runtime_pm_get(&i915->runtime_pm);
+	atomic_inc(&i915->gpu_error.pending_fb_pin);
+
+	for_i915_gem_ww(&ww, err, true) {
+		err = i915_gem_object_lock(dpt->obj, &ww);
+		if (err)
+			continue;
+
+		vma = i915_gem_object_ggtt_pin_ww(dpt->obj, &ww, NULL, 0, 4096,
+						  pin_flags);
+		if (IS_ERR(vma)) {
+			err = PTR_ERR(vma);
+			continue;
+		}
+
+		iomem = i915_vma_pin_iomap(vma);
+		i915_vma_unpin(vma);
+
+		if (IS_ERR(iomem)) {
+			err = PTR_ERR(iomem);
+			continue;
+		}
+
+		dpt->vma = vma;
+		dpt->iomem = iomem;
+
+		i915_vma_get(vma);
+	}
+
+	dpt->obj->mm.dirty = true;
+
+	atomic_dec(&i915->gpu_error.pending_fb_pin);
+	intel_runtime_pm_put(&i915->runtime_pm, wakeref);
+
+	return err ? ERR_PTR(err) : vma;
+}
+
+void intel_dpt_unpin(struct i915_address_space *vm)
+{
+	struct i915_dpt *dpt = i915_vm_to_dpt(vm);
+
+	i915_vma_unpin_iomap(dpt->vma);
+	i915_vma_put(dpt->vma);
+}
+
+/**
+ * intel_dpt_resume - restore the memory mapping for all DPT FBs during system resume
+ * @i915: device instance
+ *
+ * Restore the memory mapping during system resume for all framebuffers which
+ * are mapped to HW via a GGTT->DPT page table. The content of these page
+ * tables are not stored in the hibernation image during S4 and S3RST->S4
+ * transitions, so here we reprogram the PTE entries in those tables.
+ *
+ * This function must be called after the mappings in GGTT have been restored calling
+ * i915_ggtt_resume().
+ */
+void intel_dpt_resume(struct drm_i915_private *i915)
+{
+	struct drm_framebuffer *drm_fb;
+
+	if (!HAS_DISPLAY(i915))
+		return;
+
+	mutex_lock(&i915->drm.mode_config.fb_lock);
+	drm_for_each_fb(drm_fb, &i915->drm) {
+		struct intel_framebuffer *fb = to_intel_framebuffer(drm_fb);
+
+		if (fb->dpt_vm)
+			i915_ggtt_resume_vm(fb->dpt_vm);
+	}
+	mutex_unlock(&i915->drm.mode_config.fb_lock);
+}
+
+/**
+ * intel_dpt_suspend - suspend the memory mapping for all DPT FBs during system suspend
+ * @i915: device instance
+ *
+ * Suspend the memory mapping during system suspend for all framebuffers which
+ * are mapped to HW via a GGTT->DPT page table.
+ *
+ * This function must be called before the mappings in GGTT are suspended calling
+ * i915_ggtt_suspend().
+ */
+void intel_dpt_suspend(struct drm_i915_private *i915)
+{
+	struct drm_framebuffer *drm_fb;
+
+	if (!HAS_DISPLAY(i915))
+		return;
+
+	mutex_lock(&i915->drm.mode_config.fb_lock);
+
+	drm_for_each_fb(drm_fb, &i915->drm) {
+		struct intel_framebuffer *fb = to_intel_framebuffer(drm_fb);
+
+		if (fb->dpt_vm)
+			i915_ggtt_suspend_vm(fb->dpt_vm);
+	}
+
+	mutex_unlock(&i915->drm.mode_config.fb_lock);
+}
+
+struct i915_address_space *
+intel_dpt_create(struct intel_framebuffer *fb)
+{
+	struct drm_gem_object *obj = &intel_fb_obj(&fb->base)->base;
+	struct drm_i915_private *i915 = to_i915(obj->dev);
+	struct drm_i915_gem_object *dpt_obj;
+	struct i915_address_space *vm;
+	struct i915_dpt *dpt;
+	size_t size;
+	int ret;
+
+	if (intel_fb_needs_pot_stride_remap(fb))
+		size = intel_remapped_info_size(&fb->remapped_view.gtt.remapped);
+	else
+		size = DIV_ROUND_UP_ULL(obj->size, I915_GTT_PAGE_SIZE);
+
+	size = round_up(size * sizeof(gen8_pte_t), I915_GTT_PAGE_SIZE);
+
+	dpt_obj = i915_gem_object_create_lmem(i915, size, I915_BO_ALLOC_CONTIGUOUS);
+	if (IS_ERR(dpt_obj) && i915_ggtt_has_aperture(to_gt(i915)->ggtt))
+		dpt_obj = i915_gem_object_create_stolen(i915, size);
+	if (IS_ERR(dpt_obj) && !HAS_LMEM(i915)) {
+		drm_dbg_kms(&i915->drm, "Allocating dpt from smem\n");
+		dpt_obj = i915_gem_object_create_shmem(i915, size);
+	}
+	if (IS_ERR(dpt_obj))
+		return ERR_CAST(dpt_obj);
+
+	ret = i915_gem_object_lock_interruptible(dpt_obj, NULL);
+	if (!ret) {
+		ret = i915_gem_object_set_cache_level(dpt_obj, I915_CACHE_NONE);
+		i915_gem_object_unlock(dpt_obj);
+	}
+	if (ret) {
+		i915_gem_object_put(dpt_obj);
+		return ERR_PTR(ret);
+	}
+
+	dpt = kzalloc(sizeof(*dpt), GFP_KERNEL);
+	if (!dpt) {
+		i915_gem_object_put(dpt_obj);
+		return ERR_PTR(-ENOMEM);
+	}
+
+	vm = &dpt->vm;
+
+	vm->gt = to_gt(i915);
+	vm->i915 = i915;
+	vm->dma = i915->drm.dev;
+	vm->total = (size / sizeof(gen8_pte_t)) * I915_GTT_PAGE_SIZE;
+	vm->is_dpt = true;
+
+	i915_address_space_init(vm, VM_CLASS_DPT);
+
+	vm->insert_page = dpt_insert_page;
+	vm->clear_range = dpt_clear_range;
+	vm->insert_entries = dpt_insert_entries;
+	vm->cleanup = dpt_cleanup;
+
+	vm->vma_ops.bind_vma    = dpt_bind_vma;
+	vm->vma_ops.unbind_vma  = dpt_unbind_vma;
+
+	vm->pte_encode = gen8_ggtt_pte_encode;
+
+	dpt->obj = dpt_obj;
+	dpt->obj->is_dpt = true;
+
+	return &dpt->vm;
+}
+
+void intel_dpt_destroy(struct i915_address_space *vm)
+{
+	struct i915_dpt *dpt = i915_vm_to_dpt(vm);
+
+	dpt->obj->is_dpt = false;
+	i915_vm_put(&dpt->vm);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_dpt.h b/drivers/gpu/drm/i915/display/intel_dpt.h
new file mode 100644
index 000000000..e18a9f767
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dpt.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#ifndef __INTEL_DPT_H__
+#define __INTEL_DPT_H__
+
+struct drm_i915_private;
+
+struct i915_address_space;
+struct i915_vma;
+struct intel_framebuffer;
+
+void intel_dpt_destroy(struct i915_address_space *vm);
+struct i915_vma *intel_dpt_pin(struct i915_address_space *vm);
+void intel_dpt_unpin(struct i915_address_space *vm);
+void intel_dpt_suspend(struct drm_i915_private *i915);
+void intel_dpt_resume(struct drm_i915_private *i915);
+struct i915_address_space *
+intel_dpt_create(struct intel_framebuffer *fb);
+
+#endif /* __INTEL_DPT_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_drrs.c b/drivers/gpu/drm/i915/display/intel_drrs.c
new file mode 100644
index 000000000..7da4a9cbe
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_drrs.c
@@ -0,0 +1,299 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#include "i915_drv.h"
+#include "intel_atomic.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_drrs.h"
+#include "intel_panel.h"
+
+/**
+ * DOC: Display Refresh Rate Switching (DRRS)
+ *
+ * Display Refresh Rate Switching (DRRS) is a power conservation feature
+ * which enables swtching between low and high refresh rates,
+ * dynamically, based on the usage scenario. This feature is applicable
+ * for internal panels.
+ *
+ * Indication that the panel supports DRRS is given by the panel EDID, which
+ * would list multiple refresh rates for one resolution.
+ *
+ * DRRS is of 2 types - static and seamless.
+ * Static DRRS involves changing refresh rate (RR) by doing a full modeset
+ * (may appear as a blink on screen) and is used in dock-undock scenario.
+ * Seamless DRRS involves changing RR without any visual effect to the user
+ * and can be used during normal system usage. This is done by programming
+ * certain registers.
+ *
+ * Support for static/seamless DRRS may be indicated in the VBT based on
+ * inputs from the panel spec.
+ *
+ * DRRS saves power by switching to low RR based on usage scenarios.
+ *
+ * The implementation is based on frontbuffer tracking implementation.  When
+ * there is a disturbance on the screen triggered by user activity or a periodic
+ * system activity, DRRS is disabled (RR is changed to high RR).  When there is
+ * no movement on screen, after a timeout of 1 second, a switch to low RR is
+ * made.
+ *
+ * For integration with frontbuffer tracking code, intel_drrs_invalidate()
+ * and intel_drrs_flush() are called.
+ *
+ * DRRS can be further extended to support other internal panels and also
+ * the scenario of video playback wherein RR is set based on the rate
+ * requested by userspace.
+ */
+
+const char *intel_drrs_type_str(enum drrs_type drrs_type)
+{
+	static const char * const str[] = {
+		[DRRS_TYPE_NONE] = "none",
+		[DRRS_TYPE_STATIC] = "static",
+		[DRRS_TYPE_SEAMLESS] = "seamless",
+	};
+
+	if (drrs_type >= ARRAY_SIZE(str))
+		return "<invalid>";
+
+	return str[drrs_type];
+}
+
+static void
+intel_drrs_set_refresh_rate_pipeconf(struct intel_crtc *crtc,
+				     enum drrs_refresh_rate refresh_rate)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum transcoder cpu_transcoder = crtc->drrs.cpu_transcoder;
+	u32 val, bit;
+
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
+		bit = PIPECONF_REFRESH_RATE_ALT_VLV;
+	else
+		bit = PIPECONF_REFRESH_RATE_ALT_ILK;
+
+	val = intel_de_read(dev_priv, PIPECONF(cpu_transcoder));
+
+	if (refresh_rate == DRRS_REFRESH_RATE_LOW)
+		val |= bit;
+	else
+		val &= ~bit;
+
+	intel_de_write(dev_priv, PIPECONF(cpu_transcoder), val);
+}
+
+static void
+intel_drrs_set_refresh_rate_m_n(struct intel_crtc *crtc,
+				enum drrs_refresh_rate refresh_rate)
+{
+	intel_cpu_transcoder_set_m1_n1(crtc, crtc->drrs.cpu_transcoder,
+				       refresh_rate == DRRS_REFRESH_RATE_LOW ?
+				       &crtc->drrs.m2_n2 : &crtc->drrs.m_n);
+}
+
+bool intel_drrs_is_active(struct intel_crtc *crtc)
+{
+	return crtc->drrs.cpu_transcoder != INVALID_TRANSCODER;
+}
+
+static void intel_drrs_set_state(struct intel_crtc *crtc,
+				 enum drrs_refresh_rate refresh_rate)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+
+	if (refresh_rate == crtc->drrs.refresh_rate)
+		return;
+
+	if (intel_cpu_transcoder_has_m2_n2(dev_priv, crtc->drrs.cpu_transcoder))
+		intel_drrs_set_refresh_rate_pipeconf(crtc, refresh_rate);
+	else
+		intel_drrs_set_refresh_rate_m_n(crtc, refresh_rate);
+
+	crtc->drrs.refresh_rate = refresh_rate;
+}
+
+static void intel_drrs_schedule_work(struct intel_crtc *crtc)
+{
+	mod_delayed_work(system_wq, &crtc->drrs.work, msecs_to_jiffies(1000));
+}
+
+static unsigned int intel_drrs_frontbuffer_bits(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	unsigned int frontbuffer_bits;
+
+	frontbuffer_bits = INTEL_FRONTBUFFER_ALL_MASK(crtc->pipe);
+
+	for_each_intel_crtc_in_pipe_mask(&i915->drm, crtc,
+					 crtc_state->bigjoiner_pipes)
+		frontbuffer_bits |= INTEL_FRONTBUFFER_ALL_MASK(crtc->pipe);
+
+	return frontbuffer_bits;
+}
+
+/**
+ * intel_drrs_activate - activate DRRS
+ * @crtc_state: the crtc state
+ *
+ * Activates DRRS on the crtc.
+ */
+void intel_drrs_activate(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+
+	if (!crtc_state->has_drrs)
+		return;
+
+	if (!crtc_state->hw.active)
+		return;
+
+	if (intel_crtc_is_bigjoiner_slave(crtc_state))
+		return;
+
+	mutex_lock(&crtc->drrs.mutex);
+
+	crtc->drrs.cpu_transcoder = crtc_state->cpu_transcoder;
+	crtc->drrs.m_n = crtc_state->dp_m_n;
+	crtc->drrs.m2_n2 = crtc_state->dp_m2_n2;
+	crtc->drrs.frontbuffer_bits = intel_drrs_frontbuffer_bits(crtc_state);
+	crtc->drrs.busy_frontbuffer_bits = 0;
+
+	intel_drrs_schedule_work(crtc);
+
+	mutex_unlock(&crtc->drrs.mutex);
+}
+
+/**
+ * intel_drrs_deactivate - deactivate DRRS
+ * @old_crtc_state: the old crtc state
+ *
+ * Deactivates DRRS on the crtc.
+ */
+void intel_drrs_deactivate(const struct intel_crtc_state *old_crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
+
+	if (!old_crtc_state->has_drrs)
+		return;
+
+	if (!old_crtc_state->hw.active)
+		return;
+
+	if (intel_crtc_is_bigjoiner_slave(old_crtc_state))
+		return;
+
+	mutex_lock(&crtc->drrs.mutex);
+
+	if (intel_drrs_is_active(crtc))
+		intel_drrs_set_state(crtc, DRRS_REFRESH_RATE_HIGH);
+
+	crtc->drrs.cpu_transcoder = INVALID_TRANSCODER;
+	crtc->drrs.frontbuffer_bits = 0;
+	crtc->drrs.busy_frontbuffer_bits = 0;
+
+	mutex_unlock(&crtc->drrs.mutex);
+
+	cancel_delayed_work_sync(&crtc->drrs.work);
+}
+
+static void intel_drrs_downclock_work(struct work_struct *work)
+{
+	struct intel_crtc *crtc = container_of(work, typeof(*crtc), drrs.work.work);
+
+	mutex_lock(&crtc->drrs.mutex);
+
+	if (intel_drrs_is_active(crtc) && !crtc->drrs.busy_frontbuffer_bits)
+		intel_drrs_set_state(crtc, DRRS_REFRESH_RATE_LOW);
+
+	mutex_unlock(&crtc->drrs.mutex);
+}
+
+static void intel_drrs_frontbuffer_update(struct drm_i915_private *dev_priv,
+					  unsigned int all_frontbuffer_bits,
+					  bool invalidate)
+{
+	struct intel_crtc *crtc;
+
+	for_each_intel_crtc(&dev_priv->drm, crtc) {
+		unsigned int frontbuffer_bits;
+
+		mutex_lock(&crtc->drrs.mutex);
+
+		frontbuffer_bits = all_frontbuffer_bits & crtc->drrs.frontbuffer_bits;
+		if (!frontbuffer_bits) {
+			mutex_unlock(&crtc->drrs.mutex);
+			continue;
+		}
+
+		if (invalidate)
+			crtc->drrs.busy_frontbuffer_bits |= frontbuffer_bits;
+		else
+			crtc->drrs.busy_frontbuffer_bits &= ~frontbuffer_bits;
+
+		/* flush/invalidate means busy screen hence upclock */
+		intel_drrs_set_state(crtc, DRRS_REFRESH_RATE_HIGH);
+
+		/*
+		 * flush also means no more activity hence schedule downclock, if all
+		 * other fbs are quiescent too
+		 */
+		if (!crtc->drrs.busy_frontbuffer_bits)
+			intel_drrs_schedule_work(crtc);
+		else
+			cancel_delayed_work(&crtc->drrs.work);
+
+		mutex_unlock(&crtc->drrs.mutex);
+	}
+}
+
+/**
+ * intel_drrs_invalidate - Disable Idleness DRRS
+ * @dev_priv: i915 device
+ * @frontbuffer_bits: frontbuffer plane tracking bits
+ *
+ * This function gets called everytime rendering on the given planes start.
+ * Hence DRRS needs to be Upclocked, i.e. (LOW_RR -> HIGH_RR).
+ *
+ * Dirty frontbuffers relevant to DRRS are tracked in busy_frontbuffer_bits.
+ */
+void intel_drrs_invalidate(struct drm_i915_private *dev_priv,
+			   unsigned int frontbuffer_bits)
+{
+	intel_drrs_frontbuffer_update(dev_priv, frontbuffer_bits, true);
+}
+
+/**
+ * intel_drrs_flush - Restart Idleness DRRS
+ * @dev_priv: i915 device
+ * @frontbuffer_bits: frontbuffer plane tracking bits
+ *
+ * This function gets called every time rendering on the given planes has
+ * completed or flip on a crtc is completed. So DRRS should be upclocked
+ * (LOW_RR -> HIGH_RR). And also Idleness detection should be started again,
+ * if no other planes are dirty.
+ *
+ * Dirty frontbuffers relevant to DRRS are tracked in busy_frontbuffer_bits.
+ */
+void intel_drrs_flush(struct drm_i915_private *dev_priv,
+		      unsigned int frontbuffer_bits)
+{
+	intel_drrs_frontbuffer_update(dev_priv, frontbuffer_bits, false);
+}
+
+/**
+ * intel_crtc_drrs_init - Init DRRS for CRTC
+ * @crtc: crtc
+ *
+ * This function is called only once at driver load to initialize basic
+ * DRRS stuff.
+ *
+ */
+void intel_crtc_drrs_init(struct intel_crtc *crtc)
+{
+	INIT_DELAYED_WORK(&crtc->drrs.work, intel_drrs_downclock_work);
+	mutex_init(&crtc->drrs.mutex);
+	crtc->drrs.cpu_transcoder = INVALID_TRANSCODER;
+}
diff --git a/drivers/gpu/drm/i915/display/intel_drrs.h b/drivers/gpu/drm/i915/display/intel_drrs.h
new file mode 100644
index 000000000..3ad1be1ad
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_drrs.h
@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#ifndef __INTEL_DRRS_H__
+#define __INTEL_DRRS_H__
+
+#include <linux/types.h>
+
+enum drrs_type;
+struct drm_i915_private;
+struct intel_atomic_state;
+struct intel_crtc;
+struct intel_crtc_state;
+struct intel_connector;
+
+const char *intel_drrs_type_str(enum drrs_type drrs_type);
+bool intel_drrs_is_active(struct intel_crtc *crtc);
+void intel_drrs_activate(const struct intel_crtc_state *crtc_state);
+void intel_drrs_deactivate(const struct intel_crtc_state *crtc_state);
+void intel_drrs_invalidate(struct drm_i915_private *dev_priv,
+			   unsigned int frontbuffer_bits);
+void intel_drrs_flush(struct drm_i915_private *dev_priv,
+		      unsigned int frontbuffer_bits);
+void intel_crtc_drrs_init(struct intel_crtc *crtc);
+
+#endif /* __INTEL_DRRS_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_dsb.c b/drivers/gpu/drm/i915/display/intel_dsb.c
new file mode 100644
index 000000000..fc9c3e41c
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dsb.c
@@ -0,0 +1,363 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2019 Intel Corporation
+ *
+ */
+
+#include "gem/i915_gem_internal.h"
+
+#include "i915_drv.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_dsb.h"
+
+struct i915_vma;
+
+enum dsb_id {
+	INVALID_DSB = -1,
+	DSB1,
+	DSB2,
+	DSB3,
+	MAX_DSB_PER_PIPE
+};
+
+struct intel_dsb {
+	enum dsb_id id;
+	u32 *cmd_buf;
+	struct i915_vma *vma;
+
+	/*
+	 * free_pos will point the first free entry position
+	 * and help in calculating tail of command buffer.
+	 */
+	int free_pos;
+
+	/*
+	 * ins_start_offset will help to store start address of the dsb
+	 * instuction and help in identifying the batch of auto-increment
+	 * register.
+	 */
+	u32 ins_start_offset;
+};
+
+#define DSB_BUF_SIZE    (2 * PAGE_SIZE)
+
+/**
+ * DOC: DSB
+ *
+ * A DSB (Display State Buffer) is a queue of MMIO instructions in the memory
+ * which can be offloaded to DSB HW in Display Controller. DSB HW is a DMA
+ * engine that can be programmed to download the DSB from memory.
+ * It allows driver to batch submit display HW programming. This helps to
+ * reduce loading time and CPU activity, thereby making the context switch
+ * faster. DSB Support added from Gen12 Intel graphics based platform.
+ *
+ * DSB's can access only the pipe, plane, and transcoder Data Island Packet
+ * registers.
+ *
+ * DSB HW can support only register writes (both indexed and direct MMIO
+ * writes). There are no registers reads possible with DSB HW engine.
+ */
+
+/* DSB opcodes. */
+#define DSB_OPCODE_SHIFT		24
+#define DSB_OPCODE_MMIO_WRITE		0x1
+#define DSB_OPCODE_INDEXED_WRITE	0x9
+#define DSB_BYTE_EN			0xF
+#define DSB_BYTE_EN_SHIFT		20
+#define DSB_REG_VALUE_MASK		0xfffff
+
+static bool is_dsb_busy(struct drm_i915_private *i915, enum pipe pipe,
+			enum dsb_id id)
+{
+	return DSB_STATUS & intel_de_read(i915, DSB_CTRL(pipe, id));
+}
+
+static bool intel_dsb_enable_engine(struct drm_i915_private *i915,
+				    enum pipe pipe, enum dsb_id id)
+{
+	u32 dsb_ctrl;
+
+	dsb_ctrl = intel_de_read(i915, DSB_CTRL(pipe, id));
+	if (DSB_STATUS & dsb_ctrl) {
+		drm_dbg_kms(&i915->drm, "DSB engine is busy.\n");
+		return false;
+	}
+
+	dsb_ctrl |= DSB_ENABLE;
+	intel_de_write(i915, DSB_CTRL(pipe, id), dsb_ctrl);
+
+	intel_de_posting_read(i915, DSB_CTRL(pipe, id));
+	return true;
+}
+
+static bool intel_dsb_disable_engine(struct drm_i915_private *i915,
+				     enum pipe pipe, enum dsb_id id)
+{
+	u32 dsb_ctrl;
+
+	dsb_ctrl = intel_de_read(i915, DSB_CTRL(pipe, id));
+	if (DSB_STATUS & dsb_ctrl) {
+		drm_dbg_kms(&i915->drm, "DSB engine is busy.\n");
+		return false;
+	}
+
+	dsb_ctrl &= ~DSB_ENABLE;
+	intel_de_write(i915, DSB_CTRL(pipe, id), dsb_ctrl);
+
+	intel_de_posting_read(i915, DSB_CTRL(pipe, id));
+	return true;
+}
+
+/**
+ * intel_dsb_indexed_reg_write() -Write to the DSB context for auto
+ * increment register.
+ * @crtc_state: intel_crtc_state structure
+ * @reg: register address.
+ * @val: value.
+ *
+ * This function is used for writing register-value pair in command
+ * buffer of DSB for auto-increment register. During command buffer overflow,
+ * a warning is thrown and rest all erroneous condition register programming
+ * is done through mmio write.
+ */
+
+void intel_dsb_indexed_reg_write(const struct intel_crtc_state *crtc_state,
+				 i915_reg_t reg, u32 val)
+{
+	struct intel_dsb *dsb = crtc_state->dsb;
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	u32 *buf;
+	u32 reg_val;
+
+	if (!dsb) {
+		intel_de_write_fw(dev_priv, reg, val);
+		return;
+	}
+	buf = dsb->cmd_buf;
+	if (drm_WARN_ON(&dev_priv->drm, dsb->free_pos >= DSB_BUF_SIZE)) {
+		drm_dbg_kms(&dev_priv->drm, "DSB buffer overflow\n");
+		return;
+	}
+
+	/*
+	 * For example the buffer will look like below for 3 dwords for auto
+	 * increment register:
+	 * +--------------------------------------------------------+
+	 * | size = 3 | offset &| value1 | value2 | value3 | zero   |
+	 * |          | opcode  |        |        |        |        |
+	 * +--------------------------------------------------------+
+	 * +          +         +        +        +        +        +
+	 * 0          4         8        12       16       20       24
+	 * Byte
+	 *
+	 * As every instruction is 8 byte aligned the index of dsb instruction
+	 * will start always from even number while dealing with u32 array. If
+	 * we are writing odd no of dwords, Zeros will be added in the end for
+	 * padding.
+	 */
+	reg_val = buf[dsb->ins_start_offset + 1] & DSB_REG_VALUE_MASK;
+	if (reg_val != i915_mmio_reg_offset(reg)) {
+		/* Every instruction should be 8 byte aligned. */
+		dsb->free_pos = ALIGN(dsb->free_pos, 2);
+
+		dsb->ins_start_offset = dsb->free_pos;
+
+		/* Update the size. */
+		buf[dsb->free_pos++] = 1;
+
+		/* Update the opcode and reg. */
+		buf[dsb->free_pos++] = (DSB_OPCODE_INDEXED_WRITE  <<
+					DSB_OPCODE_SHIFT) |
+					i915_mmio_reg_offset(reg);
+
+		/* Update the value. */
+		buf[dsb->free_pos++] = val;
+	} else {
+		/* Update the new value. */
+		buf[dsb->free_pos++] = val;
+
+		/* Update the size. */
+		buf[dsb->ins_start_offset]++;
+	}
+
+	/* if number of data words is odd, then the last dword should be 0.*/
+	if (dsb->free_pos & 0x1)
+		buf[dsb->free_pos] = 0;
+}
+
+/**
+ * intel_dsb_reg_write() -Write to the DSB context for normal
+ * register.
+ * @crtc_state: intel_crtc_state structure
+ * @reg: register address.
+ * @val: value.
+ *
+ * This function is used for writing register-value pair in command
+ * buffer of DSB. During command buffer overflow, a warning  is thrown
+ * and rest all erroneous condition register programming is done
+ * through mmio write.
+ */
+void intel_dsb_reg_write(const struct intel_crtc_state *crtc_state,
+			 i915_reg_t reg, u32 val)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	struct intel_dsb *dsb;
+	u32 *buf;
+
+	dsb = crtc_state->dsb;
+	if (!dsb) {
+		intel_de_write_fw(dev_priv, reg, val);
+		return;
+	}
+
+	buf = dsb->cmd_buf;
+	if (drm_WARN_ON(&dev_priv->drm, dsb->free_pos >= DSB_BUF_SIZE)) {
+		drm_dbg_kms(&dev_priv->drm, "DSB buffer overflow\n");
+		return;
+	}
+
+	dsb->ins_start_offset = dsb->free_pos;
+	buf[dsb->free_pos++] = val;
+	buf[dsb->free_pos++] = (DSB_OPCODE_MMIO_WRITE  << DSB_OPCODE_SHIFT) |
+			       (DSB_BYTE_EN << DSB_BYTE_EN_SHIFT) |
+			       i915_mmio_reg_offset(reg);
+}
+
+/**
+ * intel_dsb_commit() - Trigger workload execution of DSB.
+ * @crtc_state: intel_crtc_state structure
+ *
+ * This function is used to do actual write to hardware using DSB.
+ * On errors, fall back to MMIO. Also this function help to reset the context.
+ */
+void intel_dsb_commit(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_dsb *dsb = crtc_state->dsb;
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	enum pipe pipe = crtc->pipe;
+	u32 tail;
+
+	if (!(dsb && dsb->free_pos))
+		return;
+
+	if (!intel_dsb_enable_engine(dev_priv, pipe, dsb->id))
+		goto reset;
+
+	if (is_dsb_busy(dev_priv, pipe, dsb->id)) {
+		drm_err(&dev_priv->drm,
+			"HEAD_PTR write failed - dsb engine is busy.\n");
+		goto reset;
+	}
+	intel_de_write(dev_priv, DSB_HEAD(pipe, dsb->id),
+		       i915_ggtt_offset(dsb->vma));
+
+	tail = ALIGN(dsb->free_pos * 4, CACHELINE_BYTES);
+	if (tail > dsb->free_pos * 4)
+		memset(&dsb->cmd_buf[dsb->free_pos], 0,
+		       (tail - dsb->free_pos * 4));
+
+	if (is_dsb_busy(dev_priv, pipe, dsb->id)) {
+		drm_err(&dev_priv->drm,
+			"TAIL_PTR write failed - dsb engine is busy.\n");
+		goto reset;
+	}
+	drm_dbg_kms(&dev_priv->drm,
+		    "DSB execution started - head 0x%x, tail 0x%x\n",
+		    i915_ggtt_offset(dsb->vma), tail);
+	intel_de_write(dev_priv, DSB_TAIL(pipe, dsb->id),
+		       i915_ggtt_offset(dsb->vma) + tail);
+	if (wait_for(!is_dsb_busy(dev_priv, pipe, dsb->id), 1)) {
+		drm_err(&dev_priv->drm,
+			"Timed out waiting for DSB workload completion.\n");
+		goto reset;
+	}
+
+reset:
+	dsb->free_pos = 0;
+	dsb->ins_start_offset = 0;
+	intel_dsb_disable_engine(dev_priv, pipe, dsb->id);
+}
+
+/**
+ * intel_dsb_prepare() - Allocate, pin and map the DSB command buffer.
+ * @crtc_state: intel_crtc_state structure to prepare associated dsb instance.
+ *
+ * This function prepare the command buffer which is used to store dsb
+ * instructions with data.
+ */
+void intel_dsb_prepare(struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	struct intel_dsb *dsb;
+	struct drm_i915_gem_object *obj;
+	struct i915_vma *vma;
+	u32 *buf;
+	intel_wakeref_t wakeref;
+
+	if (!HAS_DSB(i915))
+		return;
+
+	dsb = kmalloc(sizeof(*dsb), GFP_KERNEL);
+	if (!dsb) {
+		drm_err(&i915->drm, "DSB object creation failed\n");
+		return;
+	}
+
+	wakeref = intel_runtime_pm_get(&i915->runtime_pm);
+
+	obj = i915_gem_object_create_internal(i915, DSB_BUF_SIZE);
+	if (IS_ERR(obj)) {
+		kfree(dsb);
+		goto out;
+	}
+
+	vma = i915_gem_object_ggtt_pin(obj, NULL, 0, 0, 0);
+	if (IS_ERR(vma)) {
+		i915_gem_object_put(obj);
+		kfree(dsb);
+		goto out;
+	}
+
+	buf = i915_gem_object_pin_map_unlocked(vma->obj, I915_MAP_WC);
+	if (IS_ERR(buf)) {
+		i915_vma_unpin_and_release(&vma, I915_VMA_RELEASE_MAP);
+		kfree(dsb);
+		goto out;
+	}
+
+	dsb->id = DSB1;
+	dsb->vma = vma;
+	dsb->cmd_buf = buf;
+	dsb->free_pos = 0;
+	dsb->ins_start_offset = 0;
+	crtc_state->dsb = dsb;
+out:
+	if (!crtc_state->dsb)
+		drm_info(&i915->drm,
+			 "DSB queue setup failed, will fallback to MMIO for display HW programming\n");
+
+	intel_runtime_pm_put(&i915->runtime_pm, wakeref);
+}
+
+/**
+ * intel_dsb_cleanup() - To cleanup DSB context.
+ * @crtc_state: intel_crtc_state structure to cleanup associated dsb instance.
+ *
+ * This function cleanup the DSB context by unpinning and releasing
+ * the VMA object associated with it.
+ */
+void intel_dsb_cleanup(struct intel_crtc_state *crtc_state)
+{
+	if (!crtc_state->dsb)
+		return;
+
+	i915_vma_unpin_and_release(&crtc_state->dsb->vma, I915_VMA_RELEASE_MAP);
+	kfree(crtc_state->dsb);
+	crtc_state->dsb = NULL;
+}
diff --git a/drivers/gpu/drm/i915/display/intel_dsb.h b/drivers/gpu/drm/i915/display/intel_dsb.h
new file mode 100644
index 000000000..74dd2b334
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dsb.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef _INTEL_DSB_H
+#define _INTEL_DSB_H
+
+#include <linux/types.h>
+
+#include "i915_reg_defs.h"
+
+struct intel_crtc_state;
+
+void intel_dsb_prepare(struct intel_crtc_state *crtc_state);
+void intel_dsb_cleanup(struct intel_crtc_state *crtc_state);
+void intel_dsb_reg_write(const struct intel_crtc_state *crtc_state,
+			 i915_reg_t reg, u32 val);
+void intel_dsb_indexed_reg_write(const struct intel_crtc_state *crtc_state,
+				 i915_reg_t reg, u32 val);
+void intel_dsb_commit(const struct intel_crtc_state *crtc_state);
+
+#endif
diff --git a/drivers/gpu/drm/i915/display/intel_dsi.c b/drivers/gpu/drm/i915/display/intel_dsi.c
new file mode 100644
index 000000000..5efdd471a
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dsi.c
@@ -0,0 +1,114 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2018 Intel Corporation
+ */
+
+#include <drm/drm_mipi_dsi.h>
+
+#include "i915_drv.h"
+#include "intel_dsi.h"
+#include "intel_panel.h"
+
+int intel_dsi_bitrate(const struct intel_dsi *intel_dsi)
+{
+	int bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
+
+	if (WARN_ON(bpp < 0))
+		bpp = 16;
+
+	return intel_dsi->pclk * bpp / intel_dsi->lane_count;
+}
+
+int intel_dsi_tlpx_ns(const struct intel_dsi *intel_dsi)
+{
+	switch (intel_dsi->escape_clk_div) {
+	default:
+	case 0:
+		return 50;
+	case 1:
+		return 100;
+	case 2:
+		return 200;
+	}
+}
+
+int intel_dsi_get_modes(struct drm_connector *connector)
+{
+	return intel_panel_get_modes(to_intel_connector(connector));
+}
+
+enum drm_mode_status intel_dsi_mode_valid(struct drm_connector *connector,
+					  struct drm_display_mode *mode)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->dev);
+	struct intel_connector *intel_connector = to_intel_connector(connector);
+	const struct drm_display_mode *fixed_mode =
+		intel_panel_fixed_mode(intel_connector, mode);
+	int max_dotclk = to_i915(connector->dev)->max_dotclk_freq;
+	enum drm_mode_status status;
+
+	drm_dbg_kms(&dev_priv->drm, "\n");
+
+	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
+		return MODE_NO_DBLESCAN;
+
+	status = intel_panel_mode_valid(intel_connector, mode);
+	if (status != MODE_OK)
+		return status;
+
+	if (fixed_mode->clock > max_dotclk)
+		return MODE_CLOCK_HIGH;
+
+	return intel_mode_valid_max_plane_size(dev_priv, mode, false);
+}
+
+struct intel_dsi_host *intel_dsi_host_init(struct intel_dsi *intel_dsi,
+					   const struct mipi_dsi_host_ops *funcs,
+					   enum port port)
+{
+	struct intel_dsi_host *host;
+	struct mipi_dsi_device *device;
+
+	host = kzalloc(sizeof(*host), GFP_KERNEL);
+	if (!host)
+		return NULL;
+
+	host->base.ops = funcs;
+	host->intel_dsi = intel_dsi;
+	host->port = port;
+
+	/*
+	 * We should call mipi_dsi_host_register(&host->base) here, but we don't
+	 * have a host->dev, and we don't have OF stuff either. So just use the
+	 * dsi framework as a library and hope for the best. Create the dsi
+	 * devices by ourselves here too. Need to be careful though, because we
+	 * don't initialize any of the driver model devices here.
+	 */
+	device = kzalloc(sizeof(*device), GFP_KERNEL);
+	if (!device) {
+		kfree(host);
+		return NULL;
+	}
+
+	device->host = &host->base;
+	host->device = device;
+
+	return host;
+}
+
+enum drm_panel_orientation
+intel_dsi_get_panel_orientation(struct intel_connector *connector)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	enum drm_panel_orientation orientation;
+
+	orientation = connector->panel.vbt.dsi.orientation;
+	if (orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
+		return orientation;
+
+	orientation = dev_priv->display.vbt.orientation;
+	if (orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
+		return orientation;
+
+	return DRM_MODE_PANEL_ORIENTATION_NORMAL;
+}
diff --git a/drivers/gpu/drm/i915/display/intel_dsi.h b/drivers/gpu/drm/i915/display/intel_dsi.h
new file mode 100644
index 000000000..ce80bd8be
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dsi.h
@@ -0,0 +1,177 @@
+/*
+ * Copyright © 2013 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef _INTEL_DSI_H
+#define _INTEL_DSI_H
+
+#include <drm/drm_crtc.h>
+#include <drm/drm_mipi_dsi.h>
+
+#include "intel_display_types.h"
+
+#define INTEL_DSI_VIDEO_MODE	0
+#define INTEL_DSI_COMMAND_MODE	1
+
+/* Dual Link support */
+#define DSI_DUAL_LINK_NONE		0
+#define DSI_DUAL_LINK_FRONT_BACK	1
+#define DSI_DUAL_LINK_PIXEL_ALT		2
+
+struct intel_dsi_host;
+
+struct intel_dsi {
+	struct intel_encoder base;
+
+	struct intel_dsi_host *dsi_hosts[I915_MAX_PORTS];
+	intel_wakeref_t io_wakeref[I915_MAX_PORTS];
+
+	/* GPIO Desc for panel and backlight control */
+	struct gpio_desc *gpio_panel;
+	struct gpio_desc *gpio_backlight;
+
+	struct intel_connector *attached_connector;
+
+	/* bit mask of ports (vlv dsi) or phys (icl dsi) being driven */
+	union {
+		u16 ports;	/* VLV DSI */
+		u16 phys;	/* ICL DSI */
+	};
+
+	/* if true, use HS mode, otherwise LP */
+	bool hs;
+
+	/* virtual channel */
+	int channel;
+
+	/* Video mode or command mode */
+	u16 operation_mode;
+
+	/* number of DSI lanes */
+	unsigned int lane_count;
+
+	/* i2c bus associated with the slave device */
+	int i2c_bus_num;
+
+	/*
+	 * video mode pixel format
+	 *
+	 * XXX: consolidate on .format in struct mipi_dsi_device.
+	 */
+	enum mipi_dsi_pixel_format pixel_format;
+
+	/* NON_BURST_SYNC_PULSE, NON_BURST_SYNC_EVENTS, or BURST_MODE */
+	int video_mode;
+
+	/* eot for MIPI_EOT_DISABLE register */
+	u8 eotp_pkt;
+	u8 clock_stop;
+
+	u8 escape_clk_div;
+	u8 dual_link;
+
+	/* RGB or BGR */
+	bool bgr_enabled;
+
+	u8 pixel_overlap;
+	u32 port_bits;
+	u32 bw_timer;
+	u32 dphy_reg;
+
+	/* data lanes dphy timing */
+	u32 dphy_data_lane_reg;
+	u32 video_frmt_cfg_bits;
+	u16 lp_byte_clk;
+
+	/* timeouts in byte clocks */
+	u16 hs_tx_timeout;
+	u16 lp_rx_timeout;
+	u16 turn_arnd_val;
+	u16 rst_timer_val;
+	u16 hs_to_lp_count;
+	u16 clk_lp_to_hs_count;
+	u16 clk_hs_to_lp_count;
+
+	u16 init_count;
+	u32 pclk;
+	u16 burst_mode_ratio;
+
+	/* all delays in ms */
+	u16 backlight_off_delay;
+	u16 backlight_on_delay;
+	u16 panel_on_delay;
+	u16 panel_off_delay;
+	u16 panel_pwr_cycle_delay;
+	ktime_t panel_power_off_time;
+};
+
+struct intel_dsi_host {
+	struct mipi_dsi_host base;
+	struct intel_dsi *intel_dsi;
+	enum port port;
+
+	/* our little hack */
+	struct mipi_dsi_device *device;
+};
+
+static inline struct intel_dsi_host *to_intel_dsi_host(struct mipi_dsi_host *h)
+{
+	return container_of(h, struct intel_dsi_host, base);
+}
+
+#define for_each_dsi_port(__port, __ports_mask) \
+	for_each_port_masked(__port, __ports_mask)
+#define for_each_dsi_phy(__phy, __phys_mask) \
+	for_each_phy_masked(__phy, __phys_mask)
+
+static inline struct intel_dsi *enc_to_intel_dsi(struct intel_encoder *encoder)
+{
+	return container_of(&encoder->base, struct intel_dsi, base.base);
+}
+
+static inline bool is_vid_mode(struct intel_dsi *intel_dsi)
+{
+	return intel_dsi->operation_mode == INTEL_DSI_VIDEO_MODE;
+}
+
+static inline bool is_cmd_mode(struct intel_dsi *intel_dsi)
+{
+	return intel_dsi->operation_mode == INTEL_DSI_COMMAND_MODE;
+}
+
+static inline u16 intel_dsi_encoder_ports(struct intel_encoder *encoder)
+{
+	return enc_to_intel_dsi(encoder)->ports;
+}
+
+int intel_dsi_bitrate(const struct intel_dsi *intel_dsi);
+int intel_dsi_tlpx_ns(const struct intel_dsi *intel_dsi);
+enum drm_panel_orientation
+intel_dsi_get_panel_orientation(struct intel_connector *connector);
+int intel_dsi_get_modes(struct drm_connector *connector);
+enum drm_mode_status intel_dsi_mode_valid(struct drm_connector *connector,
+					  struct drm_display_mode *mode);
+struct intel_dsi_host *intel_dsi_host_init(struct intel_dsi *intel_dsi,
+					   const struct mipi_dsi_host_ops *funcs,
+					   enum port port);
+
+#endif /* _INTEL_DSI_H */
diff --git a/drivers/gpu/drm/i915/display/intel_dsi_dcs_backlight.c b/drivers/gpu/drm/i915/display/intel_dsi_dcs_backlight.c
new file mode 100644
index 000000000..20e466d84
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dsi_dcs_backlight.c
@@ -0,0 +1,200 @@
+/*
+ * Copyright © 2016 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Author: Deepak M <m.deepak at intel.com>
+ */
+
+#include <drm/drm_mipi_dsi.h>
+#include <video/mipi_display.h>
+
+#include "i915_drv.h"
+#include "intel_display_types.h"
+#include "intel_dsi.h"
+#include "intel_dsi_dcs_backlight.h"
+
+#define CONTROL_DISPLAY_BCTRL		(1 << 5)
+#define CONTROL_DISPLAY_DD		(1 << 3)
+#define CONTROL_DISPLAY_BL		(1 << 2)
+
+#define POWER_SAVE_OFF			(0 << 0)
+#define POWER_SAVE_LOW			(1 << 0)
+#define POWER_SAVE_MEDIUM		(2 << 0)
+#define POWER_SAVE_HIGH			(3 << 0)
+#define POWER_SAVE_OUTDOOR_MODE		(4 << 0)
+
+#define PANEL_PWM_MAX_VALUE		0xFF
+
+static u32 dcs_get_backlight(struct intel_connector *connector, enum pipe unused)
+{
+	struct intel_encoder *encoder = intel_attached_encoder(connector);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	struct intel_panel *panel = &connector->panel;
+	struct mipi_dsi_device *dsi_device;
+	u8 data[2] = {};
+	enum port port;
+	size_t len = panel->backlight.max > U8_MAX ? 2 : 1;
+
+	for_each_dsi_port(port, panel->vbt.dsi.bl_ports) {
+		dsi_device = intel_dsi->dsi_hosts[port]->device;
+		mipi_dsi_dcs_read(dsi_device, MIPI_DCS_GET_DISPLAY_BRIGHTNESS,
+				  &data, len);
+		break;
+	}
+
+	return (data[1] << 8) | data[0];
+}
+
+static void dcs_set_backlight(const struct drm_connector_state *conn_state, u32 level)
+{
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(to_intel_encoder(conn_state->best_encoder));
+	struct intel_panel *panel = &to_intel_connector(conn_state->connector)->panel;
+	struct mipi_dsi_device *dsi_device;
+	u8 data[2] = {};
+	enum port port;
+	size_t len = panel->backlight.max > U8_MAX ? 2 : 1;
+	unsigned long mode_flags;
+
+	if (len == 1) {
+		data[0] = level;
+	} else {
+		data[0] = level >> 8;
+		data[1] = level;
+	}
+
+	for_each_dsi_port(port, panel->vbt.dsi.bl_ports) {
+		dsi_device = intel_dsi->dsi_hosts[port]->device;
+		mode_flags = dsi_device->mode_flags;
+		dsi_device->mode_flags &= ~MIPI_DSI_MODE_LPM;
+		mipi_dsi_dcs_write(dsi_device, MIPI_DCS_SET_DISPLAY_BRIGHTNESS,
+				   &data, len);
+		dsi_device->mode_flags = mode_flags;
+	}
+}
+
+static void dcs_disable_backlight(const struct drm_connector_state *conn_state, u32 level)
+{
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(to_intel_encoder(conn_state->best_encoder));
+	struct intel_panel *panel = &to_intel_connector(conn_state->connector)->panel;
+	struct mipi_dsi_device *dsi_device;
+	enum port port;
+
+	dcs_set_backlight(conn_state, 0);
+
+	for_each_dsi_port(port, panel->vbt.dsi.cabc_ports) {
+		u8 cabc = POWER_SAVE_OFF;
+
+		dsi_device = intel_dsi->dsi_hosts[port]->device;
+		mipi_dsi_dcs_write(dsi_device, MIPI_DCS_WRITE_POWER_SAVE,
+				   &cabc, sizeof(cabc));
+	}
+
+	for_each_dsi_port(port, panel->vbt.dsi.bl_ports) {
+		u8 ctrl = 0;
+
+		dsi_device = intel_dsi->dsi_hosts[port]->device;
+
+		mipi_dsi_dcs_read(dsi_device, MIPI_DCS_GET_CONTROL_DISPLAY,
+				  &ctrl, sizeof(ctrl));
+
+		ctrl &= ~CONTROL_DISPLAY_BL;
+		ctrl &= ~CONTROL_DISPLAY_DD;
+		ctrl &= ~CONTROL_DISPLAY_BCTRL;
+
+		mipi_dsi_dcs_write(dsi_device, MIPI_DCS_WRITE_CONTROL_DISPLAY,
+				   &ctrl, sizeof(ctrl));
+	}
+}
+
+static void dcs_enable_backlight(const struct intel_crtc_state *crtc_state,
+				 const struct drm_connector_state *conn_state, u32 level)
+{
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(to_intel_encoder(conn_state->best_encoder));
+	struct intel_panel *panel = &to_intel_connector(conn_state->connector)->panel;
+	struct mipi_dsi_device *dsi_device;
+	enum port port;
+
+	for_each_dsi_port(port, panel->vbt.dsi.bl_ports) {
+		u8 ctrl = 0;
+
+		dsi_device = intel_dsi->dsi_hosts[port]->device;
+
+		mipi_dsi_dcs_read(dsi_device, MIPI_DCS_GET_CONTROL_DISPLAY,
+				  &ctrl, sizeof(ctrl));
+
+		ctrl |= CONTROL_DISPLAY_BL;
+		ctrl |= CONTROL_DISPLAY_DD;
+		ctrl |= CONTROL_DISPLAY_BCTRL;
+
+		mipi_dsi_dcs_write(dsi_device, MIPI_DCS_WRITE_CONTROL_DISPLAY,
+				   &ctrl, sizeof(ctrl));
+	}
+
+	for_each_dsi_port(port, panel->vbt.dsi.cabc_ports) {
+		u8 cabc = POWER_SAVE_MEDIUM;
+
+		dsi_device = intel_dsi->dsi_hosts[port]->device;
+		mipi_dsi_dcs_write(dsi_device, MIPI_DCS_WRITE_POWER_SAVE,
+				   &cabc, sizeof(cabc));
+	}
+
+	dcs_set_backlight(conn_state, level);
+}
+
+static int dcs_setup_backlight(struct intel_connector *connector,
+			       enum pipe unused)
+{
+	struct intel_panel *panel = &connector->panel;
+
+	if (panel->vbt.backlight.brightness_precision_bits > 8)
+		panel->backlight.max = (1 << panel->vbt.backlight.brightness_precision_bits) - 1;
+	else
+		panel->backlight.max = PANEL_PWM_MAX_VALUE;
+
+	panel->backlight.level = panel->backlight.max;
+
+	return 0;
+}
+
+static const struct intel_panel_bl_funcs dcs_bl_funcs = {
+	.setup = dcs_setup_backlight,
+	.enable = dcs_enable_backlight,
+	.disable = dcs_disable_backlight,
+	.set = dcs_set_backlight,
+	.get = dcs_get_backlight,
+};
+
+int intel_dsi_dcs_init_backlight_funcs(struct intel_connector *intel_connector)
+{
+	struct drm_device *dev = intel_connector->base.dev;
+	struct intel_encoder *encoder = intel_attached_encoder(intel_connector);
+	struct intel_panel *panel = &intel_connector->panel;
+
+	if (panel->vbt.backlight.type != INTEL_BACKLIGHT_DSI_DCS)
+		return -ENODEV;
+
+	if (drm_WARN_ON(dev, encoder->type != INTEL_OUTPUT_DSI))
+		return -EINVAL;
+
+	panel->backlight.funcs = &dcs_bl_funcs;
+
+	return 0;
+}
diff --git a/drivers/gpu/drm/i915/display/intel_dsi_dcs_backlight.h b/drivers/gpu/drm/i915/display/intel_dsi_dcs_backlight.h
new file mode 100644
index 000000000..eb0194784
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dsi_dcs_backlight.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_DSI_DCS_BACKLIGHT_H__
+#define __INTEL_DSI_DCS_BACKLIGHT_H__
+
+struct intel_connector;
+
+int intel_dsi_dcs_init_backlight_funcs(struct intel_connector *intel_connector);
+
+#endif /* __INTEL_DSI_DCS_BACKLIGHT_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_dsi_vbt.c b/drivers/gpu/drm/i915/display/intel_dsi_vbt.c
new file mode 100644
index 000000000..f102c13cb
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dsi_vbt.c
@@ -0,0 +1,1037 @@
+/*
+ * Copyright © 2014 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Author: Shobhit Kumar <shobhit.kumar@intel.com>
+ *
+ */
+
+#include <linux/gpio/consumer.h>
+#include <linux/gpio/machine.h>
+#include <linux/mfd/intel_soc_pmic.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/pinctrl/machine.h>
+#include <linux/slab.h>
+#include <linux/string_helpers.h>
+
+#include <asm/unaligned.h>
+
+#include <drm/drm_crtc.h>
+#include <drm/drm_edid.h>
+
+#include <video/mipi_display.h>
+
+#include "i915_drv.h"
+#include "i915_reg.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_dsi.h"
+#include "intel_dsi_vbt.h"
+#include "intel_gmbus_regs.h"
+#include "vlv_dsi.h"
+#include "vlv_dsi_regs.h"
+#include "vlv_sideband.h"
+
+#define MIPI_TRANSFER_MODE_SHIFT	0
+#define MIPI_VIRTUAL_CHANNEL_SHIFT	1
+#define MIPI_PORT_SHIFT			3
+
+/* base offsets for gpio pads */
+#define VLV_GPIO_NC_0_HV_DDI0_HPD	0x4130
+#define VLV_GPIO_NC_1_HV_DDI0_DDC_SDA	0x4120
+#define VLV_GPIO_NC_2_HV_DDI0_DDC_SCL	0x4110
+#define VLV_GPIO_NC_3_PANEL0_VDDEN	0x4140
+#define VLV_GPIO_NC_4_PANEL0_BKLTEN	0x4150
+#define VLV_GPIO_NC_5_PANEL0_BKLTCTL	0x4160
+#define VLV_GPIO_NC_6_HV_DDI1_HPD	0x4180
+#define VLV_GPIO_NC_7_HV_DDI1_DDC_SDA	0x4190
+#define VLV_GPIO_NC_8_HV_DDI1_DDC_SCL	0x4170
+#define VLV_GPIO_NC_9_PANEL1_VDDEN	0x4100
+#define VLV_GPIO_NC_10_PANEL1_BKLTEN	0x40E0
+#define VLV_GPIO_NC_11_PANEL1_BKLTCTL	0x40F0
+
+#define VLV_GPIO_PCONF0(base_offset)	(base_offset)
+#define VLV_GPIO_PAD_VAL(base_offset)	((base_offset) + 8)
+
+struct gpio_map {
+	u16 base_offset;
+	bool init;
+};
+
+static struct gpio_map vlv_gpio_table[] = {
+	{ VLV_GPIO_NC_0_HV_DDI0_HPD },
+	{ VLV_GPIO_NC_1_HV_DDI0_DDC_SDA },
+	{ VLV_GPIO_NC_2_HV_DDI0_DDC_SCL },
+	{ VLV_GPIO_NC_3_PANEL0_VDDEN },
+	{ VLV_GPIO_NC_4_PANEL0_BKLTEN },
+	{ VLV_GPIO_NC_5_PANEL0_BKLTCTL },
+	{ VLV_GPIO_NC_6_HV_DDI1_HPD },
+	{ VLV_GPIO_NC_7_HV_DDI1_DDC_SDA },
+	{ VLV_GPIO_NC_8_HV_DDI1_DDC_SCL },
+	{ VLV_GPIO_NC_9_PANEL1_VDDEN },
+	{ VLV_GPIO_NC_10_PANEL1_BKLTEN },
+	{ VLV_GPIO_NC_11_PANEL1_BKLTCTL },
+};
+
+struct i2c_adapter_lookup {
+	u16 slave_addr;
+	struct intel_dsi *intel_dsi;
+	acpi_handle dev_handle;
+};
+
+#define CHV_GPIO_IDX_START_N		0
+#define CHV_GPIO_IDX_START_E		73
+#define CHV_GPIO_IDX_START_SW		100
+#define CHV_GPIO_IDX_START_SE		198
+
+#define CHV_VBT_MAX_PINS_PER_FMLY	15
+
+#define CHV_GPIO_PAD_CFG0(f, i)		(0x4400 + (f) * 0x400 + (i) * 8)
+#define  CHV_GPIO_GPIOEN		(1 << 15)
+#define  CHV_GPIO_GPIOCFG_GPIO		(0 << 8)
+#define  CHV_GPIO_GPIOCFG_GPO		(1 << 8)
+#define  CHV_GPIO_GPIOCFG_GPI		(2 << 8)
+#define  CHV_GPIO_GPIOCFG_HIZ		(3 << 8)
+#define  CHV_GPIO_GPIOTXSTATE(state)	((!!(state)) << 1)
+
+#define CHV_GPIO_PAD_CFG1(f, i)		(0x4400 + (f) * 0x400 + (i) * 8 + 4)
+#define  CHV_GPIO_CFGLOCK		(1 << 31)
+
+/* ICL DSI Display GPIO Pins */
+#define  ICL_GPIO_DDSP_HPD_A		0
+#define  ICL_GPIO_L_VDDEN_1		1
+#define  ICL_GPIO_L_BKLTEN_1		2
+#define  ICL_GPIO_DDPA_CTRLCLK_1	3
+#define  ICL_GPIO_DDPA_CTRLDATA_1	4
+#define  ICL_GPIO_DDSP_HPD_B		5
+#define  ICL_GPIO_L_VDDEN_2		6
+#define  ICL_GPIO_L_BKLTEN_2		7
+#define  ICL_GPIO_DDPA_CTRLCLK_2	8
+#define  ICL_GPIO_DDPA_CTRLDATA_2	9
+
+static enum port intel_dsi_seq_port_to_port(struct intel_dsi *intel_dsi,
+					    u8 seq_port)
+{
+	/*
+	 * If single link DSI is being used on any port, the VBT sequence block
+	 * send packet apparently always has 0 for the port. Just use the port
+	 * we have configured, and ignore the sequence block port.
+	 */
+	if (hweight8(intel_dsi->ports) == 1)
+		return ffs(intel_dsi->ports) - 1;
+
+	if (seq_port) {
+		if (intel_dsi->ports & BIT(PORT_B))
+			return PORT_B;
+		else if (intel_dsi->ports & BIT(PORT_C))
+			return PORT_C;
+	}
+
+	return PORT_A;
+}
+
+static const u8 *mipi_exec_send_packet(struct intel_dsi *intel_dsi,
+				       const u8 *data)
+{
+	struct drm_i915_private *dev_priv = to_i915(intel_dsi->base.base.dev);
+	struct mipi_dsi_device *dsi_device;
+	u8 type, flags, seq_port;
+	u16 len;
+	enum port port;
+
+	drm_dbg_kms(&dev_priv->drm, "\n");
+
+	flags = *data++;
+	type = *data++;
+
+	len = *((u16 *) data);
+	data += 2;
+
+	seq_port = (flags >> MIPI_PORT_SHIFT) & 3;
+
+	port = intel_dsi_seq_port_to_port(intel_dsi, seq_port);
+
+	if (drm_WARN_ON(&dev_priv->drm, !intel_dsi->dsi_hosts[port]))
+		goto out;
+
+	dsi_device = intel_dsi->dsi_hosts[port]->device;
+	if (!dsi_device) {
+		drm_dbg_kms(&dev_priv->drm, "no dsi device for port %c\n",
+			    port_name(port));
+		goto out;
+	}
+
+	if ((flags >> MIPI_TRANSFER_MODE_SHIFT) & 1)
+		dsi_device->mode_flags &= ~MIPI_DSI_MODE_LPM;
+	else
+		dsi_device->mode_flags |= MIPI_DSI_MODE_LPM;
+
+	dsi_device->channel = (flags >> MIPI_VIRTUAL_CHANNEL_SHIFT) & 3;
+
+	switch (type) {
+	case MIPI_DSI_GENERIC_SHORT_WRITE_0_PARAM:
+		mipi_dsi_generic_write(dsi_device, NULL, 0);
+		break;
+	case MIPI_DSI_GENERIC_SHORT_WRITE_1_PARAM:
+		mipi_dsi_generic_write(dsi_device, data, 1);
+		break;
+	case MIPI_DSI_GENERIC_SHORT_WRITE_2_PARAM:
+		mipi_dsi_generic_write(dsi_device, data, 2);
+		break;
+	case MIPI_DSI_GENERIC_READ_REQUEST_0_PARAM:
+	case MIPI_DSI_GENERIC_READ_REQUEST_1_PARAM:
+	case MIPI_DSI_GENERIC_READ_REQUEST_2_PARAM:
+		drm_dbg(&dev_priv->drm,
+			"Generic Read not yet implemented or used\n");
+		break;
+	case MIPI_DSI_GENERIC_LONG_WRITE:
+		mipi_dsi_generic_write(dsi_device, data, len);
+		break;
+	case MIPI_DSI_DCS_SHORT_WRITE:
+		mipi_dsi_dcs_write_buffer(dsi_device, data, 1);
+		break;
+	case MIPI_DSI_DCS_SHORT_WRITE_PARAM:
+		mipi_dsi_dcs_write_buffer(dsi_device, data, 2);
+		break;
+	case MIPI_DSI_DCS_READ:
+		drm_dbg(&dev_priv->drm,
+			"DCS Read not yet implemented or used\n");
+		break;
+	case MIPI_DSI_DCS_LONG_WRITE:
+		mipi_dsi_dcs_write_buffer(dsi_device, data, len);
+		break;
+	}
+
+	if (DISPLAY_VER(dev_priv) < 11)
+		vlv_dsi_wait_for_fifo_empty(intel_dsi, port);
+
+out:
+	data += len;
+
+	return data;
+}
+
+static const u8 *mipi_exec_delay(struct intel_dsi *intel_dsi, const u8 *data)
+{
+	struct drm_i915_private *i915 = to_i915(intel_dsi->base.base.dev);
+	u32 delay = *((const u32 *) data);
+
+	drm_dbg_kms(&i915->drm, "\n");
+
+	usleep_range(delay, delay + 10);
+	data += 4;
+
+	return data;
+}
+
+static void vlv_exec_gpio(struct intel_connector *connector,
+			  u8 gpio_source, u8 gpio_index, bool value)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct gpio_map *map;
+	u16 pconf0, padval;
+	u32 tmp;
+	u8 port;
+
+	if (gpio_index >= ARRAY_SIZE(vlv_gpio_table)) {
+		drm_dbg_kms(&dev_priv->drm, "unknown gpio index %u\n",
+			    gpio_index);
+		return;
+	}
+
+	map = &vlv_gpio_table[gpio_index];
+
+	if (connector->panel.vbt.dsi.seq_version >= 3) {
+		/* XXX: this assumes vlv_gpio_table only has NC GPIOs. */
+		port = IOSF_PORT_GPIO_NC;
+	} else {
+		if (gpio_source == 0) {
+			port = IOSF_PORT_GPIO_NC;
+		} else if (gpio_source == 1) {
+			drm_dbg_kms(&dev_priv->drm, "SC gpio not supported\n");
+			return;
+		} else {
+			drm_dbg_kms(&dev_priv->drm,
+				    "unknown gpio source %u\n", gpio_source);
+			return;
+		}
+	}
+
+	pconf0 = VLV_GPIO_PCONF0(map->base_offset);
+	padval = VLV_GPIO_PAD_VAL(map->base_offset);
+
+	vlv_iosf_sb_get(dev_priv, BIT(VLV_IOSF_SB_GPIO));
+	if (!map->init) {
+		/* FIXME: remove constant below */
+		vlv_iosf_sb_write(dev_priv, port, pconf0, 0x2000CC00);
+		map->init = true;
+	}
+
+	tmp = 0x4 | value;
+	vlv_iosf_sb_write(dev_priv, port, padval, tmp);
+	vlv_iosf_sb_put(dev_priv, BIT(VLV_IOSF_SB_GPIO));
+}
+
+static void chv_exec_gpio(struct intel_connector *connector,
+			  u8 gpio_source, u8 gpio_index, bool value)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	u16 cfg0, cfg1;
+	u16 family_num;
+	u8 port;
+
+	if (connector->panel.vbt.dsi.seq_version >= 3) {
+		if (gpio_index >= CHV_GPIO_IDX_START_SE) {
+			/* XXX: it's unclear whether 255->57 is part of SE. */
+			gpio_index -= CHV_GPIO_IDX_START_SE;
+			port = CHV_IOSF_PORT_GPIO_SE;
+		} else if (gpio_index >= CHV_GPIO_IDX_START_SW) {
+			gpio_index -= CHV_GPIO_IDX_START_SW;
+			port = CHV_IOSF_PORT_GPIO_SW;
+		} else if (gpio_index >= CHV_GPIO_IDX_START_E) {
+			gpio_index -= CHV_GPIO_IDX_START_E;
+			port = CHV_IOSF_PORT_GPIO_E;
+		} else {
+			port = CHV_IOSF_PORT_GPIO_N;
+		}
+	} else {
+		/* XXX: The spec is unclear about CHV GPIO on seq v2 */
+		if (gpio_source != 0) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "unknown gpio source %u\n", gpio_source);
+			return;
+		}
+
+		if (gpio_index >= CHV_GPIO_IDX_START_E) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "invalid gpio index %u for GPIO N\n",
+				    gpio_index);
+			return;
+		}
+
+		port = CHV_IOSF_PORT_GPIO_N;
+	}
+
+	family_num = gpio_index / CHV_VBT_MAX_PINS_PER_FMLY;
+	gpio_index = gpio_index % CHV_VBT_MAX_PINS_PER_FMLY;
+
+	cfg0 = CHV_GPIO_PAD_CFG0(family_num, gpio_index);
+	cfg1 = CHV_GPIO_PAD_CFG1(family_num, gpio_index);
+
+	vlv_iosf_sb_get(dev_priv, BIT(VLV_IOSF_SB_GPIO));
+	vlv_iosf_sb_write(dev_priv, port, cfg1, 0);
+	vlv_iosf_sb_write(dev_priv, port, cfg0,
+			  CHV_GPIO_GPIOEN | CHV_GPIO_GPIOCFG_GPO |
+			  CHV_GPIO_GPIOTXSTATE(value));
+	vlv_iosf_sb_put(dev_priv, BIT(VLV_IOSF_SB_GPIO));
+}
+
+static void bxt_exec_gpio(struct intel_connector *connector,
+			  u8 gpio_source, u8 gpio_index, bool value)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	/* XXX: this table is a quick ugly hack. */
+	static struct gpio_desc *bxt_gpio_table[U8_MAX + 1];
+	struct gpio_desc *gpio_desc = bxt_gpio_table[gpio_index];
+
+	if (!gpio_desc) {
+		gpio_desc = devm_gpiod_get_index(dev_priv->drm.dev,
+						 NULL, gpio_index,
+						 value ? GPIOD_OUT_LOW :
+						 GPIOD_OUT_HIGH);
+
+		if (IS_ERR_OR_NULL(gpio_desc)) {
+			drm_err(&dev_priv->drm,
+				"GPIO index %u request failed (%ld)\n",
+				gpio_index, PTR_ERR(gpio_desc));
+			return;
+		}
+
+		bxt_gpio_table[gpio_index] = gpio_desc;
+	}
+
+	gpiod_set_value(gpio_desc, value);
+}
+
+static void icl_exec_gpio(struct intel_connector *connector,
+			  u8 gpio_source, u8 gpio_index, bool value)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+
+	drm_dbg_kms(&dev_priv->drm, "Skipping ICL GPIO element execution\n");
+}
+
+enum {
+	MIPI_RESET_1 = 0,
+	MIPI_AVDD_EN_1,
+	MIPI_BKLT_EN_1,
+	MIPI_AVEE_EN_1,
+	MIPI_VIO_EN_1,
+	MIPI_RESET_2,
+	MIPI_AVDD_EN_2,
+	MIPI_BKLT_EN_2,
+	MIPI_AVEE_EN_2,
+	MIPI_VIO_EN_2,
+};
+
+static void icl_native_gpio_set_value(struct drm_i915_private *dev_priv,
+				      int gpio, bool value)
+{
+	int index;
+
+	if (drm_WARN_ON(&dev_priv->drm, DISPLAY_VER(dev_priv) == 11 && gpio >= MIPI_RESET_2))
+		return;
+
+	switch (gpio) {
+	case MIPI_RESET_1:
+	case MIPI_RESET_2:
+		index = gpio == MIPI_RESET_1 ? HPD_PORT_A : HPD_PORT_B;
+
+		/*
+		 * Disable HPD to set the pin to output, and set output
+		 * value. The HPD pin should not be enabled for DSI anyway,
+		 * assuming the board design and VBT are sane, and the pin isn't
+		 * used by a non-DSI encoder.
+		 *
+		 * The locking protects against concurrent SHOTPLUG_CTL_DDI
+		 * modifications in irq setup and handling.
+		 */
+		spin_lock_irq(&dev_priv->irq_lock);
+		intel_de_rmw(dev_priv, SHOTPLUG_CTL_DDI,
+			     SHOTPLUG_CTL_DDI_HPD_ENABLE(index) |
+			     SHOTPLUG_CTL_DDI_HPD_OUTPUT_DATA(index),
+			     value ? SHOTPLUG_CTL_DDI_HPD_OUTPUT_DATA(index) : 0);
+		spin_unlock_irq(&dev_priv->irq_lock);
+		break;
+	case MIPI_AVDD_EN_1:
+	case MIPI_AVDD_EN_2:
+		index = gpio == MIPI_AVDD_EN_1 ? 0 : 1;
+
+		intel_de_rmw(dev_priv, PP_CONTROL(index), PANEL_POWER_ON,
+			     value ? PANEL_POWER_ON : 0);
+		break;
+	case MIPI_BKLT_EN_1:
+	case MIPI_BKLT_EN_2:
+		index = gpio == MIPI_BKLT_EN_1 ? 0 : 1;
+
+		intel_de_rmw(dev_priv, PP_CONTROL(index), EDP_BLC_ENABLE,
+			     value ? EDP_BLC_ENABLE : 0);
+		break;
+	case MIPI_AVEE_EN_1:
+	case MIPI_AVEE_EN_2:
+		index = gpio == MIPI_AVEE_EN_1 ? 1 : 2;
+
+		intel_de_rmw(dev_priv, GPIO(dev_priv, index),
+			     GPIO_CLOCK_VAL_OUT,
+			     GPIO_CLOCK_DIR_MASK | GPIO_CLOCK_DIR_OUT |
+			     GPIO_CLOCK_VAL_MASK | (value ? GPIO_CLOCK_VAL_OUT : 0));
+		break;
+	case MIPI_VIO_EN_1:
+	case MIPI_VIO_EN_2:
+		index = gpio == MIPI_VIO_EN_1 ? 1 : 2;
+
+		intel_de_rmw(dev_priv, GPIO(dev_priv, index),
+			     GPIO_DATA_VAL_OUT,
+			     GPIO_DATA_DIR_MASK | GPIO_DATA_DIR_OUT |
+			     GPIO_DATA_VAL_MASK | (value ? GPIO_DATA_VAL_OUT : 0));
+		break;
+	default:
+		MISSING_CASE(gpio);
+	}
+}
+
+static const u8 *mipi_exec_gpio(struct intel_dsi *intel_dsi, const u8 *data)
+{
+	struct drm_device *dev = intel_dsi->base.base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_connector *connector = intel_dsi->attached_connector;
+	u8 gpio_source, gpio_index = 0, gpio_number;
+	bool value;
+	bool native = DISPLAY_VER(dev_priv) >= 11;
+
+	if (connector->panel.vbt.dsi.seq_version >= 3)
+		gpio_index = *data++;
+
+	gpio_number = *data++;
+
+	/* gpio source in sequence v2 only */
+	if (connector->panel.vbt.dsi.seq_version == 2)
+		gpio_source = (*data >> 1) & 3;
+	else
+		gpio_source = 0;
+
+	if (connector->panel.vbt.dsi.seq_version >= 4 && *data & BIT(1))
+		native = false;
+
+	/* pull up/down */
+	value = *data++ & 1;
+
+	drm_dbg_kms(&dev_priv->drm, "GPIO index %u, number %u, source %u, native %s, set to %s\n",
+		    gpio_index, gpio_number, gpio_source, str_yes_no(native), str_on_off(value));
+
+	if (native)
+		icl_native_gpio_set_value(dev_priv, gpio_number, value);
+	else if (DISPLAY_VER(dev_priv) >= 11)
+		icl_exec_gpio(connector, gpio_source, gpio_index, value);
+	else if (IS_VALLEYVIEW(dev_priv))
+		vlv_exec_gpio(connector, gpio_source, gpio_number, value);
+	else if (IS_CHERRYVIEW(dev_priv))
+		chv_exec_gpio(connector, gpio_source, gpio_number, value);
+	else
+		bxt_exec_gpio(connector, gpio_source, gpio_index, value);
+
+	return data;
+}
+
+#ifdef CONFIG_ACPI
+static int i2c_adapter_lookup(struct acpi_resource *ares, void *data)
+{
+	struct i2c_adapter_lookup *lookup = data;
+	struct intel_dsi *intel_dsi = lookup->intel_dsi;
+	struct acpi_resource_i2c_serialbus *sb;
+	struct i2c_adapter *adapter;
+	acpi_handle adapter_handle;
+	acpi_status status;
+
+	if (!i2c_acpi_get_i2c_resource(ares, &sb))
+		return 1;
+
+	if (lookup->slave_addr != sb->slave_address)
+		return 1;
+
+	status = acpi_get_handle(lookup->dev_handle,
+				 sb->resource_source.string_ptr,
+				 &adapter_handle);
+	if (ACPI_FAILURE(status))
+		return 1;
+
+	adapter = i2c_acpi_find_adapter_by_handle(adapter_handle);
+	if (adapter)
+		intel_dsi->i2c_bus_num = adapter->nr;
+
+	return 1;
+}
+
+static void i2c_acpi_find_adapter(struct intel_dsi *intel_dsi,
+				  const u16 slave_addr)
+{
+	struct drm_device *drm_dev = intel_dsi->base.base.dev;
+	struct acpi_device *adev = ACPI_COMPANION(drm_dev->dev);
+	struct i2c_adapter_lookup lookup = {
+		.slave_addr = slave_addr,
+		.intel_dsi = intel_dsi,
+		.dev_handle = acpi_device_handle(adev),
+	};
+	LIST_HEAD(resource_list);
+
+	acpi_dev_get_resources(adev, &resource_list, i2c_adapter_lookup, &lookup);
+	acpi_dev_free_resource_list(&resource_list);
+}
+#else
+static inline void i2c_acpi_find_adapter(struct intel_dsi *intel_dsi,
+					 const u16 slave_addr)
+{
+}
+#endif
+
+static const u8 *mipi_exec_i2c(struct intel_dsi *intel_dsi, const u8 *data)
+{
+	struct drm_i915_private *i915 = to_i915(intel_dsi->base.base.dev);
+	struct i2c_adapter *adapter;
+	struct i2c_msg msg;
+	int ret;
+	u8 vbt_i2c_bus_num = *(data + 2);
+	u16 slave_addr = *(u16 *)(data + 3);
+	u8 reg_offset = *(data + 5);
+	u8 payload_size = *(data + 6);
+	u8 *payload_data;
+
+	if (intel_dsi->i2c_bus_num < 0) {
+		intel_dsi->i2c_bus_num = vbt_i2c_bus_num;
+		i2c_acpi_find_adapter(intel_dsi, slave_addr);
+	}
+
+	adapter = i2c_get_adapter(intel_dsi->i2c_bus_num);
+	if (!adapter) {
+		drm_err(&i915->drm, "Cannot find a valid i2c bus for xfer\n");
+		goto err_bus;
+	}
+
+	payload_data = kzalloc(payload_size + 1, GFP_KERNEL);
+	if (!payload_data)
+		goto err_alloc;
+
+	payload_data[0] = reg_offset;
+	memcpy(&payload_data[1], (data + 7), payload_size);
+
+	msg.addr = slave_addr;
+	msg.flags = 0;
+	msg.len = payload_size + 1;
+	msg.buf = payload_data;
+
+	ret = i2c_transfer(adapter, &msg, 1);
+	if (ret < 0)
+		drm_err(&i915->drm,
+			"Failed to xfer payload of size (%u) to reg (%u)\n",
+			payload_size, reg_offset);
+
+	kfree(payload_data);
+err_alloc:
+	i2c_put_adapter(adapter);
+err_bus:
+	return data + payload_size + 7;
+}
+
+static const u8 *mipi_exec_spi(struct intel_dsi *intel_dsi, const u8 *data)
+{
+	struct drm_i915_private *i915 = to_i915(intel_dsi->base.base.dev);
+
+	drm_dbg_kms(&i915->drm, "Skipping SPI element execution\n");
+
+	return data + *(data + 5) + 6;
+}
+
+static const u8 *mipi_exec_pmic(struct intel_dsi *intel_dsi, const u8 *data)
+{
+	struct drm_i915_private *i915 = to_i915(intel_dsi->base.base.dev);
+#ifdef CONFIG_PMIC_OPREGION
+	u32 value, mask, reg_address;
+	u16 i2c_address;
+	int ret;
+
+	/* byte 0 aka PMIC Flag is reserved */
+	i2c_address	= get_unaligned_le16(data + 1);
+	reg_address	= get_unaligned_le32(data + 3);
+	value		= get_unaligned_le32(data + 7);
+	mask		= get_unaligned_le32(data + 11);
+
+	ret = intel_soc_pmic_exec_mipi_pmic_seq_element(i2c_address,
+							reg_address,
+							value, mask);
+	if (ret)
+		drm_err(&i915->drm, "%s failed, error: %d\n", __func__, ret);
+#else
+	drm_err(&i915->drm,
+		"Your hardware requires CONFIG_PMIC_OPREGION and it is not set\n");
+#endif
+
+	return data + 15;
+}
+
+typedef const u8 * (*fn_mipi_elem_exec)(struct intel_dsi *intel_dsi,
+					const u8 *data);
+static const fn_mipi_elem_exec exec_elem[] = {
+	[MIPI_SEQ_ELEM_SEND_PKT] = mipi_exec_send_packet,
+	[MIPI_SEQ_ELEM_DELAY] = mipi_exec_delay,
+	[MIPI_SEQ_ELEM_GPIO] = mipi_exec_gpio,
+	[MIPI_SEQ_ELEM_I2C] = mipi_exec_i2c,
+	[MIPI_SEQ_ELEM_SPI] = mipi_exec_spi,
+	[MIPI_SEQ_ELEM_PMIC] = mipi_exec_pmic,
+};
+
+/*
+ * MIPI Sequence from VBT #53 parsing logic
+ * We have already separated each seqence during bios parsing
+ * Following is generic execution function for any sequence
+ */
+
+static const char * const seq_name[] = {
+	[MIPI_SEQ_DEASSERT_RESET] = "MIPI_SEQ_DEASSERT_RESET",
+	[MIPI_SEQ_INIT_OTP] = "MIPI_SEQ_INIT_OTP",
+	[MIPI_SEQ_DISPLAY_ON] = "MIPI_SEQ_DISPLAY_ON",
+	[MIPI_SEQ_DISPLAY_OFF]  = "MIPI_SEQ_DISPLAY_OFF",
+	[MIPI_SEQ_ASSERT_RESET] = "MIPI_SEQ_ASSERT_RESET",
+	[MIPI_SEQ_BACKLIGHT_ON] = "MIPI_SEQ_BACKLIGHT_ON",
+	[MIPI_SEQ_BACKLIGHT_OFF] = "MIPI_SEQ_BACKLIGHT_OFF",
+	[MIPI_SEQ_TEAR_ON] = "MIPI_SEQ_TEAR_ON",
+	[MIPI_SEQ_TEAR_OFF] = "MIPI_SEQ_TEAR_OFF",
+	[MIPI_SEQ_POWER_ON] = "MIPI_SEQ_POWER_ON",
+	[MIPI_SEQ_POWER_OFF] = "MIPI_SEQ_POWER_OFF",
+};
+
+static const char *sequence_name(enum mipi_seq seq_id)
+{
+	if (seq_id < ARRAY_SIZE(seq_name) && seq_name[seq_id])
+		return seq_name[seq_id];
+	else
+		return "(unknown)";
+}
+
+static void intel_dsi_vbt_exec(struct intel_dsi *intel_dsi,
+			       enum mipi_seq seq_id)
+{
+	struct drm_i915_private *dev_priv = to_i915(intel_dsi->base.base.dev);
+	struct intel_connector *connector = intel_dsi->attached_connector;
+	const u8 *data;
+	fn_mipi_elem_exec mipi_elem_exec;
+
+	if (drm_WARN_ON(&dev_priv->drm,
+			seq_id >= ARRAY_SIZE(connector->panel.vbt.dsi.sequence)))
+		return;
+
+	data = connector->panel.vbt.dsi.sequence[seq_id];
+	if (!data)
+		return;
+
+	drm_WARN_ON(&dev_priv->drm, *data != seq_id);
+
+	drm_dbg_kms(&dev_priv->drm, "Starting MIPI sequence %d - %s\n",
+		    seq_id, sequence_name(seq_id));
+
+	/* Skip Sequence Byte. */
+	data++;
+
+	/* Skip Size of Sequence. */
+	if (connector->panel.vbt.dsi.seq_version >= 3)
+		data += 4;
+
+	while (1) {
+		u8 operation_byte = *data++;
+		u8 operation_size = 0;
+
+		if (operation_byte == MIPI_SEQ_ELEM_END)
+			break;
+
+		if (operation_byte < ARRAY_SIZE(exec_elem))
+			mipi_elem_exec = exec_elem[operation_byte];
+		else
+			mipi_elem_exec = NULL;
+
+		/* Size of Operation. */
+		if (connector->panel.vbt.dsi.seq_version >= 3)
+			operation_size = *data++;
+
+		if (mipi_elem_exec) {
+			const u8 *next = data + operation_size;
+
+			data = mipi_elem_exec(intel_dsi, data);
+
+			/* Consistency check if we have size. */
+			if (operation_size && data != next) {
+				drm_err(&dev_priv->drm,
+					"Inconsistent operation size\n");
+				return;
+			}
+		} else if (operation_size) {
+			/* We have size, skip. */
+			drm_dbg_kms(&dev_priv->drm,
+				    "Unsupported MIPI operation byte %u\n",
+				    operation_byte);
+			data += operation_size;
+		} else {
+			/* No size, can't skip without parsing. */
+			drm_err(&dev_priv->drm,
+				"Unsupported MIPI operation byte %u\n",
+				operation_byte);
+			return;
+		}
+	}
+}
+
+void intel_dsi_vbt_exec_sequence(struct intel_dsi *intel_dsi,
+				 enum mipi_seq seq_id)
+{
+	if (seq_id == MIPI_SEQ_POWER_ON && intel_dsi->gpio_panel)
+		gpiod_set_value_cansleep(intel_dsi->gpio_panel, 1);
+	if (seq_id == MIPI_SEQ_BACKLIGHT_ON && intel_dsi->gpio_backlight)
+		gpiod_set_value_cansleep(intel_dsi->gpio_backlight, 1);
+
+	intel_dsi_vbt_exec(intel_dsi, seq_id);
+
+	if (seq_id == MIPI_SEQ_POWER_OFF && intel_dsi->gpio_panel)
+		gpiod_set_value_cansleep(intel_dsi->gpio_panel, 0);
+	if (seq_id == MIPI_SEQ_BACKLIGHT_OFF && intel_dsi->gpio_backlight)
+		gpiod_set_value_cansleep(intel_dsi->gpio_backlight, 0);
+}
+
+void intel_dsi_log_params(struct intel_dsi *intel_dsi)
+{
+	struct drm_i915_private *i915 = to_i915(intel_dsi->base.base.dev);
+
+	drm_dbg_kms(&i915->drm, "Pclk %d\n", intel_dsi->pclk);
+	drm_dbg_kms(&i915->drm, "Pixel overlap %d\n",
+		    intel_dsi->pixel_overlap);
+	drm_dbg_kms(&i915->drm, "Lane count %d\n", intel_dsi->lane_count);
+	drm_dbg_kms(&i915->drm, "DPHY param reg 0x%x\n", intel_dsi->dphy_reg);
+	drm_dbg_kms(&i915->drm, "Video mode format %s\n",
+		    intel_dsi->video_mode == NON_BURST_SYNC_PULSE ?
+		    "non-burst with sync pulse" :
+		    intel_dsi->video_mode == NON_BURST_SYNC_EVENTS ?
+		    "non-burst with sync events" :
+		    intel_dsi->video_mode == BURST_MODE ?
+		    "burst" : "<unknown>");
+	drm_dbg_kms(&i915->drm, "Burst mode ratio %d\n",
+		    intel_dsi->burst_mode_ratio);
+	drm_dbg_kms(&i915->drm, "Reset timer %d\n", intel_dsi->rst_timer_val);
+	drm_dbg_kms(&i915->drm, "Eot %s\n",
+		    str_enabled_disabled(intel_dsi->eotp_pkt));
+	drm_dbg_kms(&i915->drm, "Clockstop %s\n",
+		    str_enabled_disabled(!intel_dsi->clock_stop));
+	drm_dbg_kms(&i915->drm, "Mode %s\n",
+		    intel_dsi->operation_mode ? "command" : "video");
+	if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK)
+		drm_dbg_kms(&i915->drm,
+			    "Dual link: DSI_DUAL_LINK_FRONT_BACK\n");
+	else if (intel_dsi->dual_link == DSI_DUAL_LINK_PIXEL_ALT)
+		drm_dbg_kms(&i915->drm,
+			    "Dual link: DSI_DUAL_LINK_PIXEL_ALT\n");
+	else
+		drm_dbg_kms(&i915->drm, "Dual link: NONE\n");
+	drm_dbg_kms(&i915->drm, "Pixel Format %d\n", intel_dsi->pixel_format);
+	drm_dbg_kms(&i915->drm, "TLPX %d\n", intel_dsi->escape_clk_div);
+	drm_dbg_kms(&i915->drm, "LP RX Timeout 0x%x\n",
+		    intel_dsi->lp_rx_timeout);
+	drm_dbg_kms(&i915->drm, "Turnaround Timeout 0x%x\n",
+		    intel_dsi->turn_arnd_val);
+	drm_dbg_kms(&i915->drm, "Init Count 0x%x\n", intel_dsi->init_count);
+	drm_dbg_kms(&i915->drm, "HS to LP Count 0x%x\n",
+		    intel_dsi->hs_to_lp_count);
+	drm_dbg_kms(&i915->drm, "LP Byte Clock %d\n", intel_dsi->lp_byte_clk);
+	drm_dbg_kms(&i915->drm, "DBI BW Timer 0x%x\n", intel_dsi->bw_timer);
+	drm_dbg_kms(&i915->drm, "LP to HS Clock Count 0x%x\n",
+		    intel_dsi->clk_lp_to_hs_count);
+	drm_dbg_kms(&i915->drm, "HS to LP Clock Count 0x%x\n",
+		    intel_dsi->clk_hs_to_lp_count);
+	drm_dbg_kms(&i915->drm, "BTA %s\n",
+		    str_enabled_disabled(!(intel_dsi->video_frmt_cfg_bits & DISABLE_VIDEO_BTA)));
+}
+
+bool intel_dsi_vbt_init(struct intel_dsi *intel_dsi, u16 panel_id)
+{
+	struct drm_device *dev = intel_dsi->base.base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_connector *connector = intel_dsi->attached_connector;
+	struct mipi_config *mipi_config = connector->panel.vbt.dsi.config;
+	struct mipi_pps_data *pps = connector->panel.vbt.dsi.pps;
+	struct drm_display_mode *mode = connector->panel.vbt.lfp_lvds_vbt_mode;
+	u16 burst_mode_ratio;
+	enum port port;
+
+	drm_dbg_kms(&dev_priv->drm, "\n");
+
+	intel_dsi->eotp_pkt = mipi_config->eot_pkt_disabled ? 0 : 1;
+	intel_dsi->clock_stop = mipi_config->enable_clk_stop ? 1 : 0;
+	intel_dsi->lane_count = mipi_config->lane_cnt + 1;
+	intel_dsi->pixel_format =
+			pixel_format_from_register_bits(
+				mipi_config->videomode_color_format << 7);
+
+	intel_dsi->dual_link = mipi_config->dual_link;
+	intel_dsi->pixel_overlap = mipi_config->pixel_overlap;
+	intel_dsi->operation_mode = mipi_config->is_cmd_mode;
+	intel_dsi->video_mode = mipi_config->video_transfer_mode;
+	intel_dsi->escape_clk_div = mipi_config->byte_clk_sel;
+	intel_dsi->lp_rx_timeout = mipi_config->lp_rx_timeout;
+	intel_dsi->hs_tx_timeout = mipi_config->hs_tx_timeout;
+	intel_dsi->turn_arnd_val = mipi_config->turn_around_timeout;
+	intel_dsi->rst_timer_val = mipi_config->device_reset_timer;
+	intel_dsi->init_count = mipi_config->master_init_timer;
+	intel_dsi->bw_timer = mipi_config->dbi_bw_timer;
+	intel_dsi->video_frmt_cfg_bits =
+		mipi_config->bta_enabled ? DISABLE_VIDEO_BTA : 0;
+	intel_dsi->bgr_enabled = mipi_config->rgb_flip;
+
+	/* Starting point, adjusted depending on dual link and burst mode */
+	intel_dsi->pclk = mode->clock;
+
+	/* In dual link mode each port needs half of pixel clock */
+	if (intel_dsi->dual_link) {
+		intel_dsi->pclk /= 2;
+
+		/* we can enable pixel_overlap if needed by panel. In this
+		 * case we need to increase the pixelclock for extra pixels
+		 */
+		if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK) {
+			intel_dsi->pclk += DIV_ROUND_UP(mode->vtotal * intel_dsi->pixel_overlap * 60, 1000);
+		}
+	}
+
+	/* Burst Mode Ratio
+	 * Target ddr frequency from VBT / non burst ddr freq
+	 * multiply by 100 to preserve remainder
+	 */
+	if (intel_dsi->video_mode == BURST_MODE) {
+		if (mipi_config->target_burst_mode_freq) {
+			u32 bitrate = intel_dsi_bitrate(intel_dsi);
+
+			/*
+			 * Sometimes the VBT contains a slightly lower clock,
+			 * then the bitrate we have calculated, in this case
+			 * just replace it with the calculated bitrate.
+			 */
+			if (mipi_config->target_burst_mode_freq < bitrate &&
+			    intel_fuzzy_clock_check(
+					mipi_config->target_burst_mode_freq,
+					bitrate))
+				mipi_config->target_burst_mode_freq = bitrate;
+
+			if (mipi_config->target_burst_mode_freq < bitrate) {
+				drm_err(&dev_priv->drm,
+					"Burst mode freq is less than computed\n");
+				return false;
+			}
+
+			burst_mode_ratio = DIV_ROUND_UP(
+				mipi_config->target_burst_mode_freq * 100,
+				bitrate);
+
+			intel_dsi->pclk = DIV_ROUND_UP(intel_dsi->pclk * burst_mode_ratio, 100);
+		} else {
+			drm_err(&dev_priv->drm,
+				"Burst mode target is not set\n");
+			return false;
+		}
+	} else
+		burst_mode_ratio = 100;
+
+	intel_dsi->burst_mode_ratio = burst_mode_ratio;
+
+	/* delays in VBT are in unit of 100us, so need to convert
+	 * here in ms
+	 * Delay (100us) * 100 /1000 = Delay / 10 (ms) */
+	intel_dsi->backlight_off_delay = pps->bl_disable_delay / 10;
+	intel_dsi->backlight_on_delay = pps->bl_enable_delay / 10;
+	intel_dsi->panel_on_delay = pps->panel_on_delay / 10;
+	intel_dsi->panel_off_delay = pps->panel_off_delay / 10;
+	intel_dsi->panel_pwr_cycle_delay = pps->panel_power_cycle_delay / 10;
+
+	intel_dsi->i2c_bus_num = -1;
+
+	/* a regular driver would get the device in probe */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		mipi_dsi_attach(intel_dsi->dsi_hosts[port]->device);
+	}
+
+	return true;
+}
+
+/*
+ * On some BYT/CHT devs some sequences are incomplete and we need to manually
+ * control some GPIOs. We need to add a GPIO lookup table before we get these.
+ * If the GOP did not initialize the panel (HDMI inserted) we may need to also
+ * change the pinmux for the SoC's PWM0 pin from GPIO to PWM.
+ */
+static struct gpiod_lookup_table pmic_panel_gpio_table = {
+	/* Intel GFX is consumer */
+	.dev_id = "0000:00:02.0",
+	.table = {
+		/* Panel EN/DISABLE */
+		GPIO_LOOKUP("gpio_crystalcove", 94, "panel", GPIO_ACTIVE_HIGH),
+		{ }
+	},
+};
+
+static struct gpiod_lookup_table soc_panel_gpio_table = {
+	.dev_id = "0000:00:02.0",
+	.table = {
+		GPIO_LOOKUP("INT33FC:01", 10, "backlight", GPIO_ACTIVE_HIGH),
+		GPIO_LOOKUP("INT33FC:01", 11, "panel", GPIO_ACTIVE_HIGH),
+		{ }
+	},
+};
+
+static const struct pinctrl_map soc_pwm_pinctrl_map[] = {
+	PIN_MAP_MUX_GROUP("0000:00:02.0", "soc_pwm0", "INT33FC:00",
+			  "pwm0_grp", "pwm"),
+};
+
+void intel_dsi_vbt_gpio_init(struct intel_dsi *intel_dsi, bool panel_is_on)
+{
+	struct drm_device *dev = intel_dsi->base.base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_connector *connector = intel_dsi->attached_connector;
+	struct mipi_config *mipi_config = connector->panel.vbt.dsi.config;
+	enum gpiod_flags flags = panel_is_on ? GPIOD_OUT_HIGH : GPIOD_OUT_LOW;
+	bool want_backlight_gpio = false;
+	bool want_panel_gpio = false;
+	struct pinctrl *pinctrl;
+	int ret;
+
+	if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
+	    mipi_config->pwm_blc == PPS_BLC_PMIC) {
+		gpiod_add_lookup_table(&pmic_panel_gpio_table);
+		want_panel_gpio = true;
+	}
+
+	if (IS_VALLEYVIEW(dev_priv) && mipi_config->pwm_blc == PPS_BLC_SOC) {
+		gpiod_add_lookup_table(&soc_panel_gpio_table);
+		want_panel_gpio = true;
+		want_backlight_gpio = true;
+
+		/* Ensure PWM0 pin is muxed as PWM instead of GPIO */
+		ret = pinctrl_register_mappings(soc_pwm_pinctrl_map,
+					     ARRAY_SIZE(soc_pwm_pinctrl_map));
+		if (ret)
+			drm_err(&dev_priv->drm,
+				"Failed to register pwm0 pinmux mapping\n");
+
+		pinctrl = devm_pinctrl_get_select(dev->dev, "soc_pwm0");
+		if (IS_ERR(pinctrl))
+			drm_err(&dev_priv->drm,
+				"Failed to set pinmux to PWM\n");
+	}
+
+	if (want_panel_gpio) {
+		intel_dsi->gpio_panel = gpiod_get(dev->dev, "panel", flags);
+		if (IS_ERR(intel_dsi->gpio_panel)) {
+			drm_err(&dev_priv->drm,
+				"Failed to own gpio for panel control\n");
+			intel_dsi->gpio_panel = NULL;
+		}
+	}
+
+	if (want_backlight_gpio) {
+		intel_dsi->gpio_backlight =
+			gpiod_get(dev->dev, "backlight", flags);
+		if (IS_ERR(intel_dsi->gpio_backlight)) {
+			drm_err(&dev_priv->drm,
+				"Failed to own gpio for backlight control\n");
+			intel_dsi->gpio_backlight = NULL;
+		}
+	}
+}
+
+void intel_dsi_vbt_gpio_cleanup(struct intel_dsi *intel_dsi)
+{
+	struct drm_device *dev = intel_dsi->base.base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_connector *connector = intel_dsi->attached_connector;
+	struct mipi_config *mipi_config = connector->panel.vbt.dsi.config;
+
+	if (intel_dsi->gpio_panel) {
+		gpiod_put(intel_dsi->gpio_panel);
+		intel_dsi->gpio_panel = NULL;
+	}
+
+	if (intel_dsi->gpio_backlight) {
+		gpiod_put(intel_dsi->gpio_backlight);
+		intel_dsi->gpio_backlight = NULL;
+	}
+
+	if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
+	    mipi_config->pwm_blc == PPS_BLC_PMIC)
+		gpiod_remove_lookup_table(&pmic_panel_gpio_table);
+
+	if (IS_VALLEYVIEW(dev_priv) && mipi_config->pwm_blc == PPS_BLC_SOC) {
+		pinctrl_unregister_mappings(soc_pwm_pinctrl_map);
+		gpiod_remove_lookup_table(&soc_panel_gpio_table);
+	}
+}
diff --git a/drivers/gpu/drm/i915/display/intel_dsi_vbt.h b/drivers/gpu/drm/i915/display/intel_dsi_vbt.h
new file mode 100644
index 000000000..468d873fa
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dsi_vbt.h
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#ifndef __INTEL_DSI_VBT_H__
+#define __INTEL_DSI_VBT_H__
+
+#include <linux/types.h>
+
+enum mipi_seq;
+struct intel_dsi;
+
+bool intel_dsi_vbt_init(struct intel_dsi *intel_dsi, u16 panel_id);
+void intel_dsi_vbt_gpio_init(struct intel_dsi *intel_dsi, bool panel_is_on);
+void intel_dsi_vbt_gpio_cleanup(struct intel_dsi *intel_dsi);
+void intel_dsi_vbt_exec_sequence(struct intel_dsi *intel_dsi,
+				 enum mipi_seq seq_id);
+void intel_dsi_log_params(struct intel_dsi *intel_dsi);
+
+#endif /* __INTEL_DSI_VBT_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_dvo.c b/drivers/gpu/drm/i915/display/intel_dvo.c
new file mode 100644
index 000000000..511c58907
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dvo.c
@@ -0,0 +1,550 @@
+/*
+ * Copyright 2006 Dave Airlie <airlied@linux.ie>
+ * Copyright © 2006-2007 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *	Eric Anholt <eric@anholt.net>
+ */
+
+#include <linux/i2c.h>
+#include <linux/slab.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc.h>
+
+#include "i915_drv.h"
+#include "intel_connector.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_dvo.h"
+#include "intel_dvo_dev.h"
+#include "intel_gmbus.h"
+#include "intel_panel.h"
+
+#define INTEL_DVO_CHIP_NONE	0
+#define INTEL_DVO_CHIP_LVDS	1
+#define INTEL_DVO_CHIP_TMDS	2
+#define INTEL_DVO_CHIP_TVOUT	4
+#define INTEL_DVO_CHIP_LVDS_NO_FIXED	5
+
+#define SIL164_ADDR	0x38
+#define CH7xxx_ADDR	0x76
+#define TFP410_ADDR	0x38
+#define NS2501_ADDR     0x38
+
+static const struct intel_dvo_device intel_dvo_devices[] = {
+	{
+		.type = INTEL_DVO_CHIP_TMDS,
+		.name = "sil164",
+		.dvo_reg = DVOC,
+		.dvo_srcdim_reg = DVOC_SRCDIM,
+		.slave_addr = SIL164_ADDR,
+		.dev_ops = &sil164_ops,
+	},
+	{
+		.type = INTEL_DVO_CHIP_TMDS,
+		.name = "ch7xxx",
+		.dvo_reg = DVOC,
+		.dvo_srcdim_reg = DVOC_SRCDIM,
+		.slave_addr = CH7xxx_ADDR,
+		.dev_ops = &ch7xxx_ops,
+	},
+	{
+		.type = INTEL_DVO_CHIP_TMDS,
+		.name = "ch7xxx",
+		.dvo_reg = DVOC,
+		.dvo_srcdim_reg = DVOC_SRCDIM,
+		.slave_addr = 0x75, /* For some ch7010 */
+		.dev_ops = &ch7xxx_ops,
+	},
+	{
+		.type = INTEL_DVO_CHIP_LVDS,
+		.name = "ivch",
+		.dvo_reg = DVOA,
+		.dvo_srcdim_reg = DVOA_SRCDIM,
+		.slave_addr = 0x02, /* Might also be 0x44, 0x84, 0xc4 */
+		.dev_ops = &ivch_ops,
+	},
+	{
+		.type = INTEL_DVO_CHIP_TMDS,
+		.name = "tfp410",
+		.dvo_reg = DVOC,
+		.dvo_srcdim_reg = DVOC_SRCDIM,
+		.slave_addr = TFP410_ADDR,
+		.dev_ops = &tfp410_ops,
+	},
+	{
+		.type = INTEL_DVO_CHIP_LVDS,
+		.name = "ch7017",
+		.dvo_reg = DVOC,
+		.dvo_srcdim_reg = DVOC_SRCDIM,
+		.slave_addr = 0x75,
+		.gpio = GMBUS_PIN_DPB,
+		.dev_ops = &ch7017_ops,
+	},
+	{
+		.type = INTEL_DVO_CHIP_LVDS_NO_FIXED,
+		.name = "ns2501",
+		.dvo_reg = DVOB,
+		.dvo_srcdim_reg = DVOB_SRCDIM,
+		.slave_addr = NS2501_ADDR,
+		.dev_ops = &ns2501_ops,
+	},
+};
+
+struct intel_dvo {
+	struct intel_encoder base;
+
+	struct intel_dvo_device dev;
+
+	struct intel_connector *attached_connector;
+
+	bool panel_wants_dither;
+};
+
+static struct intel_dvo *enc_to_dvo(struct intel_encoder *encoder)
+{
+	return container_of(encoder, struct intel_dvo, base);
+}
+
+static struct intel_dvo *intel_attached_dvo(struct intel_connector *connector)
+{
+	return enc_to_dvo(intel_attached_encoder(connector));
+}
+
+static bool intel_dvo_connector_get_hw_state(struct intel_connector *connector)
+{
+	struct drm_device *dev = connector->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_dvo *intel_dvo = intel_attached_dvo(connector);
+	u32 tmp;
+
+	tmp = intel_de_read(dev_priv, intel_dvo->dev.dvo_reg);
+
+	if (!(tmp & DVO_ENABLE))
+		return false;
+
+	return intel_dvo->dev.dev_ops->get_hw_state(&intel_dvo->dev);
+}
+
+static bool intel_dvo_get_hw_state(struct intel_encoder *encoder,
+				   enum pipe *pipe)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dvo *intel_dvo = enc_to_dvo(encoder);
+	u32 tmp;
+
+	tmp = intel_de_read(dev_priv, intel_dvo->dev.dvo_reg);
+
+	*pipe = (tmp & DVO_PIPE_SEL_MASK) >> DVO_PIPE_SEL_SHIFT;
+
+	return tmp & DVO_ENABLE;
+}
+
+static void intel_dvo_get_config(struct intel_encoder *encoder,
+				 struct intel_crtc_state *pipe_config)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dvo *intel_dvo = enc_to_dvo(encoder);
+	u32 tmp, flags = 0;
+
+	pipe_config->output_types |= BIT(INTEL_OUTPUT_DVO);
+
+	tmp = intel_de_read(dev_priv, intel_dvo->dev.dvo_reg);
+	if (tmp & DVO_HSYNC_ACTIVE_HIGH)
+		flags |= DRM_MODE_FLAG_PHSYNC;
+	else
+		flags |= DRM_MODE_FLAG_NHSYNC;
+	if (tmp & DVO_VSYNC_ACTIVE_HIGH)
+		flags |= DRM_MODE_FLAG_PVSYNC;
+	else
+		flags |= DRM_MODE_FLAG_NVSYNC;
+
+	pipe_config->hw.adjusted_mode.flags |= flags;
+
+	pipe_config->hw.adjusted_mode.crtc_clock = pipe_config->port_clock;
+}
+
+static void intel_disable_dvo(struct intel_atomic_state *state,
+			      struct intel_encoder *encoder,
+			      const struct intel_crtc_state *old_crtc_state,
+			      const struct drm_connector_state *old_conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dvo *intel_dvo = enc_to_dvo(encoder);
+	i915_reg_t dvo_reg = intel_dvo->dev.dvo_reg;
+	u32 temp = intel_de_read(dev_priv, dvo_reg);
+
+	intel_dvo->dev.dev_ops->dpms(&intel_dvo->dev, false);
+	intel_de_write(dev_priv, dvo_reg, temp & ~DVO_ENABLE);
+	intel_de_read(dev_priv, dvo_reg);
+}
+
+static void intel_enable_dvo(struct intel_atomic_state *state,
+			     struct intel_encoder *encoder,
+			     const struct intel_crtc_state *pipe_config,
+			     const struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dvo *intel_dvo = enc_to_dvo(encoder);
+	i915_reg_t dvo_reg = intel_dvo->dev.dvo_reg;
+	u32 temp = intel_de_read(dev_priv, dvo_reg);
+
+	intel_dvo->dev.dev_ops->mode_set(&intel_dvo->dev,
+					 &pipe_config->hw.mode,
+					 &pipe_config->hw.adjusted_mode);
+
+	intel_de_write(dev_priv, dvo_reg, temp | DVO_ENABLE);
+	intel_de_read(dev_priv, dvo_reg);
+
+	intel_dvo->dev.dev_ops->dpms(&intel_dvo->dev, true);
+}
+
+static enum drm_mode_status
+intel_dvo_mode_valid(struct drm_connector *connector,
+		     struct drm_display_mode *mode)
+{
+	struct intel_connector *intel_connector = to_intel_connector(connector);
+	struct intel_dvo *intel_dvo = intel_attached_dvo(intel_connector);
+	struct drm_i915_private *i915 = to_i915(intel_connector->base.dev);
+	const struct drm_display_mode *fixed_mode =
+		intel_panel_fixed_mode(intel_connector, mode);
+	int max_dotclk = to_i915(connector->dev)->max_dotclk_freq;
+	int target_clock = mode->clock;
+	enum drm_mode_status status;
+
+	status = intel_cpu_transcoder_mode_valid(i915, mode);
+	if (status != MODE_OK)
+		return status;
+
+	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
+		return MODE_NO_DBLESCAN;
+
+	/* XXX: Validate clock range */
+
+	if (fixed_mode) {
+		enum drm_mode_status status;
+
+		status = intel_panel_mode_valid(intel_connector, mode);
+		if (status != MODE_OK)
+			return status;
+
+		target_clock = fixed_mode->clock;
+	}
+
+	if (target_clock > max_dotclk)
+		return MODE_CLOCK_HIGH;
+
+	return intel_dvo->dev.dev_ops->mode_valid(&intel_dvo->dev, mode);
+}
+
+static int intel_dvo_compute_config(struct intel_encoder *encoder,
+				    struct intel_crtc_state *pipe_config,
+				    struct drm_connector_state *conn_state)
+{
+	struct intel_dvo *intel_dvo = enc_to_dvo(encoder);
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct drm_display_mode *adjusted_mode = &pipe_config->hw.adjusted_mode;
+	const struct drm_display_mode *fixed_mode =
+		intel_panel_fixed_mode(intel_dvo->attached_connector, adjusted_mode);
+
+	/*
+	 * If we have timings from the BIOS for the panel, put them in
+	 * to the adjusted mode.  The CRTC will be set up for this mode,
+	 * with the panel scaling set up to source from the H/VDisplay
+	 * of the original mode.
+	 */
+	if (fixed_mode) {
+		int ret;
+
+		ret = intel_panel_compute_config(connector, adjusted_mode);
+		if (ret)
+			return ret;
+	}
+
+	if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)
+		return -EINVAL;
+
+	pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
+
+	return 0;
+}
+
+static void intel_dvo_pre_enable(struct intel_atomic_state *state,
+				 struct intel_encoder *encoder,
+				 const struct intel_crtc_state *pipe_config,
+				 const struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+	const struct drm_display_mode *adjusted_mode = &pipe_config->hw.adjusted_mode;
+	struct intel_dvo *intel_dvo = enc_to_dvo(encoder);
+	enum pipe pipe = crtc->pipe;
+	u32 dvo_val;
+	i915_reg_t dvo_reg = intel_dvo->dev.dvo_reg;
+	i915_reg_t dvo_srcdim_reg = intel_dvo->dev.dvo_srcdim_reg;
+
+	/* Save the data order, since I don't know what it should be set to. */
+	dvo_val = intel_de_read(dev_priv, dvo_reg) &
+		  (DVO_PRESERVE_MASK | DVO_DATA_ORDER_GBRG);
+	dvo_val |= DVO_DATA_ORDER_FP | DVO_BORDER_ENABLE |
+		   DVO_BLANK_ACTIVE_HIGH;
+
+	dvo_val |= DVO_PIPE_SEL(pipe);
+	dvo_val |= DVO_PIPE_STALL;
+	if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
+		dvo_val |= DVO_HSYNC_ACTIVE_HIGH;
+	if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
+		dvo_val |= DVO_VSYNC_ACTIVE_HIGH;
+
+	intel_de_write(dev_priv, dvo_srcdim_reg,
+		       (adjusted_mode->crtc_hdisplay << DVO_SRCDIM_HORIZONTAL_SHIFT) | (adjusted_mode->crtc_vdisplay << DVO_SRCDIM_VERTICAL_SHIFT));
+	intel_de_write(dev_priv, dvo_reg, dvo_val);
+}
+
+static enum drm_connector_status
+intel_dvo_detect(struct drm_connector *connector, bool force)
+{
+	struct drm_i915_private *i915 = to_i915(connector->dev);
+	struct intel_dvo *intel_dvo = intel_attached_dvo(to_intel_connector(connector));
+
+	DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
+		      connector->base.id, connector->name);
+
+	if (!INTEL_DISPLAY_ENABLED(i915))
+		return connector_status_disconnected;
+
+	return intel_dvo->dev.dev_ops->detect(&intel_dvo->dev);
+}
+
+static int intel_dvo_get_modes(struct drm_connector *connector)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->dev);
+	int num_modes;
+
+	/*
+	 * We should probably have an i2c driver get_modes function for those
+	 * devices which will have a fixed set of modes determined by the chip
+	 * (TV-out, for example), but for now with just TMDS and LVDS,
+	 * that's not the case.
+	 */
+	num_modes = intel_ddc_get_modes(connector,
+					intel_gmbus_get_adapter(dev_priv, GMBUS_PIN_DPC));
+	if (num_modes)
+		return num_modes;
+
+	return intel_panel_get_modes(to_intel_connector(connector));
+}
+
+static const struct drm_connector_funcs intel_dvo_connector_funcs = {
+	.detect = intel_dvo_detect,
+	.late_register = intel_connector_register,
+	.early_unregister = intel_connector_unregister,
+	.destroy = intel_connector_destroy,
+	.fill_modes = drm_helper_probe_single_connector_modes,
+	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+};
+
+static const struct drm_connector_helper_funcs intel_dvo_connector_helper_funcs = {
+	.mode_valid = intel_dvo_mode_valid,
+	.get_modes = intel_dvo_get_modes,
+};
+
+static void intel_dvo_enc_destroy(struct drm_encoder *encoder)
+{
+	struct intel_dvo *intel_dvo = enc_to_dvo(to_intel_encoder(encoder));
+
+	if (intel_dvo->dev.dev_ops->destroy)
+		intel_dvo->dev.dev_ops->destroy(&intel_dvo->dev);
+
+	intel_encoder_destroy(encoder);
+}
+
+static const struct drm_encoder_funcs intel_dvo_enc_funcs = {
+	.destroy = intel_dvo_enc_destroy,
+};
+
+static enum port intel_dvo_port(i915_reg_t dvo_reg)
+{
+	if (i915_mmio_reg_equal(dvo_reg, DVOA))
+		return PORT_A;
+	else if (i915_mmio_reg_equal(dvo_reg, DVOB))
+		return PORT_B;
+	else
+		return PORT_C;
+}
+
+void intel_dvo_init(struct drm_i915_private *dev_priv)
+{
+	struct intel_encoder *intel_encoder;
+	struct intel_dvo *intel_dvo;
+	struct intel_connector *intel_connector;
+	int i;
+	int encoder_type = DRM_MODE_ENCODER_NONE;
+
+	intel_dvo = kzalloc(sizeof(*intel_dvo), GFP_KERNEL);
+	if (!intel_dvo)
+		return;
+
+	intel_connector = intel_connector_alloc();
+	if (!intel_connector) {
+		kfree(intel_dvo);
+		return;
+	}
+
+	intel_dvo->attached_connector = intel_connector;
+
+	intel_encoder = &intel_dvo->base;
+
+	intel_encoder->disable = intel_disable_dvo;
+	intel_encoder->enable = intel_enable_dvo;
+	intel_encoder->get_hw_state = intel_dvo_get_hw_state;
+	intel_encoder->get_config = intel_dvo_get_config;
+	intel_encoder->compute_config = intel_dvo_compute_config;
+	intel_encoder->pre_enable = intel_dvo_pre_enable;
+	intel_connector->get_hw_state = intel_dvo_connector_get_hw_state;
+
+	/* Now, try to find a controller */
+	for (i = 0; i < ARRAY_SIZE(intel_dvo_devices); i++) {
+		struct drm_connector *connector = &intel_connector->base;
+		const struct intel_dvo_device *dvo = &intel_dvo_devices[i];
+		struct i2c_adapter *i2c;
+		int gpio;
+		bool dvoinit;
+		enum pipe pipe;
+		u32 dpll[I915_MAX_PIPES];
+		enum port port;
+
+		/*
+		 * Allow the I2C driver info to specify the GPIO to be used in
+		 * special cases, but otherwise default to what's defined
+		 * in the spec.
+		 */
+		if (intel_gmbus_is_valid_pin(dev_priv, dvo->gpio))
+			gpio = dvo->gpio;
+		else if (dvo->type == INTEL_DVO_CHIP_LVDS)
+			gpio = GMBUS_PIN_SSC;
+		else
+			gpio = GMBUS_PIN_DPB;
+
+		/*
+		 * Set up the I2C bus necessary for the chip we're probing.
+		 * It appears that everything is on GPIOE except for panels
+		 * on i830 laptops, which are on GPIOB (DVOA).
+		 */
+		i2c = intel_gmbus_get_adapter(dev_priv, gpio);
+
+		intel_dvo->dev = *dvo;
+
+		/*
+		 * GMBUS NAK handling seems to be unstable, hence let the
+		 * transmitter detection run in bit banging mode for now.
+		 */
+		intel_gmbus_force_bit(i2c, true);
+
+		/*
+		 * ns2501 requires the DVO 2x clock before it will
+		 * respond to i2c accesses, so make sure we have
+		 * have the clock enabled before we attempt to
+		 * initialize the device.
+		 */
+		for_each_pipe(dev_priv, pipe) {
+			dpll[pipe] = intel_de_read(dev_priv, DPLL(pipe));
+			intel_de_write(dev_priv, DPLL(pipe),
+				       dpll[pipe] | DPLL_DVO_2X_MODE);
+		}
+
+		dvoinit = dvo->dev_ops->init(&intel_dvo->dev, i2c);
+
+		/* restore the DVO 2x clock state to original */
+		for_each_pipe(dev_priv, pipe) {
+			intel_de_write(dev_priv, DPLL(pipe), dpll[pipe]);
+		}
+
+		intel_gmbus_force_bit(i2c, false);
+
+		if (!dvoinit)
+			continue;
+
+		port = intel_dvo_port(dvo->dvo_reg);
+		drm_encoder_init(&dev_priv->drm, &intel_encoder->base,
+				 &intel_dvo_enc_funcs, encoder_type,
+				 "DVO %c", port_name(port));
+
+		intel_encoder->type = INTEL_OUTPUT_DVO;
+		intel_encoder->power_domain = POWER_DOMAIN_PORT_OTHER;
+		intel_encoder->port = port;
+		intel_encoder->pipe_mask = ~0;
+
+		if (dvo->type != INTEL_DVO_CHIP_LVDS)
+			intel_encoder->cloneable = (1 << INTEL_OUTPUT_ANALOG) |
+				(1 << INTEL_OUTPUT_DVO);
+
+		switch (dvo->type) {
+		case INTEL_DVO_CHIP_TMDS:
+			intel_connector->polled = DRM_CONNECTOR_POLL_CONNECT |
+				DRM_CONNECTOR_POLL_DISCONNECT;
+			drm_connector_init(&dev_priv->drm, connector,
+					   &intel_dvo_connector_funcs,
+					   DRM_MODE_CONNECTOR_DVII);
+			encoder_type = DRM_MODE_ENCODER_TMDS;
+			break;
+		case INTEL_DVO_CHIP_LVDS_NO_FIXED:
+		case INTEL_DVO_CHIP_LVDS:
+			drm_connector_init(&dev_priv->drm, connector,
+					   &intel_dvo_connector_funcs,
+					   DRM_MODE_CONNECTOR_LVDS);
+			encoder_type = DRM_MODE_ENCODER_LVDS;
+			break;
+		}
+
+		drm_connector_helper_add(connector,
+					 &intel_dvo_connector_helper_funcs);
+		connector->display_info.subpixel_order = SubPixelHorizontalRGB;
+		connector->interlace_allowed = false;
+		connector->doublescan_allowed = false;
+
+		intel_connector_attach_encoder(intel_connector, intel_encoder);
+		if (dvo->type == INTEL_DVO_CHIP_LVDS) {
+			/*
+			 * For our LVDS chipsets, we should hopefully be able
+			 * to dig the fixed panel mode out of the BIOS data.
+			 * However, it's in a different format from the BIOS
+			 * data on chipsets with integrated LVDS (stored in AIM
+			 * headers, likely), so for now, just get the current
+			 * mode being output through DVO.
+			 */
+			intel_panel_add_encoder_fixed_mode(intel_connector,
+							   intel_encoder);
+
+			intel_panel_init(intel_connector);
+
+			intel_dvo->panel_wants_dither = true;
+		}
+
+		return;
+	}
+
+	kfree(intel_dvo);
+	kfree(intel_connector);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_dvo.h b/drivers/gpu/drm/i915/display/intel_dvo.h
new file mode 100644
index 000000000..3ed0fdf8e
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dvo.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_DVO_H__
+#define __INTEL_DVO_H__
+
+struct drm_i915_private;
+
+void intel_dvo_init(struct drm_i915_private *dev_priv);
+
+#endif /* __INTEL_DVO_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_dvo_dev.h b/drivers/gpu/drm/i915/display/intel_dvo_dev.h
new file mode 100644
index 000000000..50205f064
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_dvo_dev.h
@@ -0,0 +1,140 @@
+/*
+ * Copyright © 2006 Eric Anholt
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  The copyright holders make no representations
+ * about the suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#ifndef __INTEL_DVO_DEV_H__
+#define __INTEL_DVO_DEV_H__
+
+#include <linux/i2c.h>
+
+#include <drm/drm_crtc.h>
+
+#include "i915_reg_defs.h"
+
+struct intel_dvo_device {
+	const char *name;
+	int type;
+	/* DVOA/B/C output register */
+	i915_reg_t dvo_reg;
+	i915_reg_t dvo_srcdim_reg;
+	/* GPIO register used for i2c bus to control this device */
+	u32 gpio;
+	int slave_addr;
+
+	const struct intel_dvo_dev_ops *dev_ops;
+	void *dev_priv;
+	struct i2c_adapter *i2c_bus;
+};
+
+struct intel_dvo_dev_ops {
+	/*
+	 * Initialize the device at startup time.
+	 * Returns NULL if the device does not exist.
+	 */
+	bool (*init)(struct intel_dvo_device *dvo,
+		     struct i2c_adapter *i2cbus);
+
+	/*
+	 * Called to allow the output a chance to create properties after the
+	 * RandR objects have been created.
+	 */
+	void (*create_resources)(struct intel_dvo_device *dvo);
+
+	/*
+	 * Turn on/off output.
+	 *
+	 * Because none of our dvo drivers support an intermediate power levels,
+	 * we don't expose this in the interfac.
+	 */
+	void (*dpms)(struct intel_dvo_device *dvo, bool enable);
+
+	/*
+	 * Callback for testing a video mode for a given output.
+	 *
+	 * This function should only check for cases where a mode can't
+	 * be supported on the output specifically, and not represent
+	 * generic CRTC limitations.
+	 *
+	 * \return MODE_OK if the mode is valid, or another MODE_* otherwise.
+	 */
+	enum drm_mode_status (*mode_valid)(struct intel_dvo_device *dvo,
+					   struct drm_display_mode *mode);
+
+	/*
+	 * Callback for preparing mode changes on an output
+	 */
+	void (*prepare)(struct intel_dvo_device *dvo);
+
+	/*
+	 * Callback for committing mode changes on an output
+	 */
+	void (*commit)(struct intel_dvo_device *dvo);
+
+	/*
+	 * Callback for setting up a video mode after fixups have been made.
+	 *
+	 * This is only called while the output is disabled.  The dpms callback
+	 * must be all that's necessary for the output, to turn the output on
+	 * after this function is called.
+	 */
+	void (*mode_set)(struct intel_dvo_device *dvo,
+			 const struct drm_display_mode *mode,
+			 const struct drm_display_mode *adjusted_mode);
+
+	/*
+	 * Probe for a connected output, and return detect_status.
+	 */
+	enum drm_connector_status (*detect)(struct intel_dvo_device *dvo);
+
+	/*
+	 * Probe the current hw status, returning true if the connected output
+	 * is active.
+	 */
+	bool (*get_hw_state)(struct intel_dvo_device *dev);
+
+	/**
+	 * Query the device for the modes it provides.
+	 *
+	 * This function may also update MonInfo, mm_width, and mm_height.
+	 *
+	 * \return singly-linked list of modes or NULL if no modes found.
+	 */
+	struct drm_display_mode *(*get_modes)(struct intel_dvo_device *dvo);
+
+	/**
+	 * Clean up driver-specific bits of the output
+	 */
+	void (*destroy) (struct intel_dvo_device *dvo);
+
+	/**
+	 * Debugging hook to dump device registers to log file
+	 */
+	void (*dump_regs)(struct intel_dvo_device *dvo);
+};
+
+extern const struct intel_dvo_dev_ops sil164_ops;
+extern const struct intel_dvo_dev_ops ch7xxx_ops;
+extern const struct intel_dvo_dev_ops ivch_ops;
+extern const struct intel_dvo_dev_ops tfp410_ops;
+extern const struct intel_dvo_dev_ops ch7017_ops;
+extern const struct intel_dvo_dev_ops ns2501_ops;
+
+#endif /* __INTEL_DVO_DEV_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_fb.c b/drivers/gpu/drm/i915/display/intel_fb.c
new file mode 100644
index 000000000..c69a63879
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_fb.c
@@ -0,0 +1,2081 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#include <drm/drm_blend.h>
+#include <drm/drm_framebuffer.h>
+#include <drm/drm_modeset_helper.h>
+
+#include "i915_drv.h"
+#include "intel_display.h"
+#include "intel_display_types.h"
+#include "intel_dpt.h"
+#include "intel_fb.h"
+
+#define check_array_bounds(i915, a, i) drm_WARN_ON(&(i915)->drm, (i) >= ARRAY_SIZE(a))
+
+/*
+ * From the Sky Lake PRM:
+ * "The Color Control Surface (CCS) contains the compression status of
+ *  the cache-line pairs. The compression state of the cache-line pair
+ *  is specified by 2 bits in the CCS. Each CCS cache-line represents
+ *  an area on the main surface of 16 x16 sets of 128 byte Y-tiled
+ *  cache-line-pairs. CCS is always Y tiled."
+ *
+ * Since cache line pairs refers to horizontally adjacent cache lines,
+ * each cache line in the CCS corresponds to an area of 32x16 cache
+ * lines on the main surface. Since each pixel is 4 bytes, this gives
+ * us a ratio of one byte in the CCS for each 8x16 pixels in the
+ * main surface.
+ */
+static const struct drm_format_info skl_ccs_formats[] = {
+	{ .format = DRM_FORMAT_XRGB8888, .depth = 24, .num_planes = 2,
+	  .cpp = { 4, 1, }, .hsub = 8, .vsub = 16, },
+	{ .format = DRM_FORMAT_XBGR8888, .depth = 24, .num_planes = 2,
+	  .cpp = { 4, 1, }, .hsub = 8, .vsub = 16, },
+	{ .format = DRM_FORMAT_ARGB8888, .depth = 32, .num_planes = 2,
+	  .cpp = { 4, 1, }, .hsub = 8, .vsub = 16, .has_alpha = true, },
+	{ .format = DRM_FORMAT_ABGR8888, .depth = 32, .num_planes = 2,
+	  .cpp = { 4, 1, }, .hsub = 8, .vsub = 16, .has_alpha = true, },
+};
+
+/*
+ * Gen-12 compression uses 4 bits of CCS data for each cache line pair in the
+ * main surface. And each 64B CCS cache line represents an area of 4x1 Y-tiles
+ * in the main surface. With 4 byte pixels and each Y-tile having dimensions of
+ * 32x32 pixels, the ratio turns out to 1B in the CCS for every 2x32 pixels in
+ * the main surface.
+ */
+static const struct drm_format_info gen12_ccs_formats[] = {
+	{ .format = DRM_FORMAT_XRGB8888, .depth = 24, .num_planes = 2,
+	  .char_per_block = { 4, 1 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
+	  .hsub = 1, .vsub = 1, },
+	{ .format = DRM_FORMAT_XBGR8888, .depth = 24, .num_planes = 2,
+	  .char_per_block = { 4, 1 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
+	  .hsub = 1, .vsub = 1, },
+	{ .format = DRM_FORMAT_ARGB8888, .depth = 32, .num_planes = 2,
+	  .char_per_block = { 4, 1 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
+	  .hsub = 1, .vsub = 1, .has_alpha = true },
+	{ .format = DRM_FORMAT_ABGR8888, .depth = 32, .num_planes = 2,
+	  .char_per_block = { 4, 1 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
+	  .hsub = 1, .vsub = 1, .has_alpha = true },
+	{ .format = DRM_FORMAT_YUYV, .num_planes = 2,
+	  .char_per_block = { 2, 1 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
+	  .hsub = 2, .vsub = 1, .is_yuv = true },
+	{ .format = DRM_FORMAT_YVYU, .num_planes = 2,
+	  .char_per_block = { 2, 1 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
+	  .hsub = 2, .vsub = 1, .is_yuv = true },
+	{ .format = DRM_FORMAT_UYVY, .num_planes = 2,
+	  .char_per_block = { 2, 1 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
+	  .hsub = 2, .vsub = 1, .is_yuv = true },
+	{ .format = DRM_FORMAT_VYUY, .num_planes = 2,
+	  .char_per_block = { 2, 1 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
+	  .hsub = 2, .vsub = 1, .is_yuv = true },
+	{ .format = DRM_FORMAT_XYUV8888, .num_planes = 2,
+	  .char_per_block = { 4, 1 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
+	  .hsub = 1, .vsub = 1, .is_yuv = true },
+	{ .format = DRM_FORMAT_NV12, .num_planes = 4,
+	  .char_per_block = { 1, 2, 1, 1 }, .block_w = { 1, 1, 4, 4 }, .block_h = { 1, 1, 1, 1 },
+	  .hsub = 2, .vsub = 2, .is_yuv = true },
+	{ .format = DRM_FORMAT_P010, .num_planes = 4,
+	  .char_per_block = { 2, 4, 1, 1 }, .block_w = { 1, 1, 2, 2 }, .block_h = { 1, 1, 1, 1 },
+	  .hsub = 2, .vsub = 2, .is_yuv = true },
+	{ .format = DRM_FORMAT_P012, .num_planes = 4,
+	  .char_per_block = { 2, 4, 1, 1 }, .block_w = { 1, 1, 2, 2 }, .block_h = { 1, 1, 1, 1 },
+	  .hsub = 2, .vsub = 2, .is_yuv = true },
+	{ .format = DRM_FORMAT_P016, .num_planes = 4,
+	  .char_per_block = { 2, 4, 1, 1 }, .block_w = { 1, 1, 2, 2 }, .block_h = { 1, 1, 1, 1 },
+	  .hsub = 2, .vsub = 2, .is_yuv = true },
+};
+
+/*
+ * Same as gen12_ccs_formats[] above, but with additional surface used
+ * to pass Clear Color information in plane 2 with 64 bits of data.
+ */
+static const struct drm_format_info gen12_ccs_cc_formats[] = {
+	{ .format = DRM_FORMAT_XRGB8888, .depth = 24, .num_planes = 3,
+	  .char_per_block = { 4, 1, 0 }, .block_w = { 1, 2, 2 }, .block_h = { 1, 1, 1 },
+	  .hsub = 1, .vsub = 1, },
+	{ .format = DRM_FORMAT_XBGR8888, .depth = 24, .num_planes = 3,
+	  .char_per_block = { 4, 1, 0 }, .block_w = { 1, 2, 2 }, .block_h = { 1, 1, 1 },
+	  .hsub = 1, .vsub = 1, },
+	{ .format = DRM_FORMAT_ARGB8888, .depth = 32, .num_planes = 3,
+	  .char_per_block = { 4, 1, 0 }, .block_w = { 1, 2, 2 }, .block_h = { 1, 1, 1 },
+	  .hsub = 1, .vsub = 1, .has_alpha = true },
+	{ .format = DRM_FORMAT_ABGR8888, .depth = 32, .num_planes = 3,
+	  .char_per_block = { 4, 1, 0 }, .block_w = { 1, 2, 2 }, .block_h = { 1, 1, 1 },
+	  .hsub = 1, .vsub = 1, .has_alpha = true },
+};
+
+static const struct drm_format_info gen12_flat_ccs_cc_formats[] = {
+	{ .format = DRM_FORMAT_XRGB8888, .depth = 24, .num_planes = 2,
+	  .char_per_block = { 4, 0 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
+	  .hsub = 1, .vsub = 1, },
+	{ .format = DRM_FORMAT_XBGR8888, .depth = 24, .num_planes = 2,
+	  .char_per_block = { 4, 0 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
+	  .hsub = 1, .vsub = 1, },
+	{ .format = DRM_FORMAT_ARGB8888, .depth = 32, .num_planes = 2,
+	  .char_per_block = { 4, 0 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
+	  .hsub = 1, .vsub = 1, .has_alpha = true },
+	{ .format = DRM_FORMAT_ABGR8888, .depth = 32, .num_planes = 2,
+	  .char_per_block = { 4, 0 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
+	  .hsub = 1, .vsub = 1, .has_alpha = true },
+};
+
+struct intel_modifier_desc {
+	u64 modifier;
+	struct {
+		u8 from;
+		u8 until;
+	} display_ver;
+#define DISPLAY_VER_ALL		{ 0, -1 }
+
+	const struct drm_format_info *formats;
+	int format_count;
+#define FORMAT_OVERRIDE(format_list) \
+	.formats = format_list, \
+	.format_count = ARRAY_SIZE(format_list)
+
+	u8 plane_caps;
+
+	struct {
+		u8 cc_planes:3;
+		u8 packed_aux_planes:4;
+		u8 planar_aux_planes:4;
+	} ccs;
+};
+
+#define INTEL_PLANE_CAP_CCS_MASK	(INTEL_PLANE_CAP_CCS_RC | \
+					 INTEL_PLANE_CAP_CCS_RC_CC | \
+					 INTEL_PLANE_CAP_CCS_MC)
+#define INTEL_PLANE_CAP_TILING_MASK	(INTEL_PLANE_CAP_TILING_X | \
+					 INTEL_PLANE_CAP_TILING_Y | \
+					 INTEL_PLANE_CAP_TILING_Yf | \
+					 INTEL_PLANE_CAP_TILING_4)
+#define INTEL_PLANE_CAP_TILING_NONE	0
+
+static const struct intel_modifier_desc intel_modifiers[] = {
+	{
+		.modifier = I915_FORMAT_MOD_4_TILED_DG2_MC_CCS,
+		.display_ver = { 13, 13 },
+		.plane_caps = INTEL_PLANE_CAP_TILING_4 | INTEL_PLANE_CAP_CCS_MC,
+	}, {
+		.modifier = I915_FORMAT_MOD_4_TILED_DG2_RC_CCS_CC,
+		.display_ver = { 13, 13 },
+		.plane_caps = INTEL_PLANE_CAP_TILING_4 | INTEL_PLANE_CAP_CCS_RC_CC,
+
+		.ccs.cc_planes = BIT(1),
+
+		FORMAT_OVERRIDE(gen12_flat_ccs_cc_formats),
+	}, {
+		.modifier = I915_FORMAT_MOD_4_TILED_DG2_RC_CCS,
+		.display_ver = { 13, 13 },
+		.plane_caps = INTEL_PLANE_CAP_TILING_4 | INTEL_PLANE_CAP_CCS_RC,
+	}, {
+		.modifier = I915_FORMAT_MOD_4_TILED,
+		.display_ver = { 13, 13 },
+		.plane_caps = INTEL_PLANE_CAP_TILING_4,
+	}, {
+		.modifier = I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS,
+		.display_ver = { 12, 13 },
+		.plane_caps = INTEL_PLANE_CAP_TILING_Y | INTEL_PLANE_CAP_CCS_MC,
+
+		.ccs.packed_aux_planes = BIT(1),
+		.ccs.planar_aux_planes = BIT(2) | BIT(3),
+
+		FORMAT_OVERRIDE(gen12_ccs_formats),
+	}, {
+		.modifier = I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS,
+		.display_ver = { 12, 13 },
+		.plane_caps = INTEL_PLANE_CAP_TILING_Y | INTEL_PLANE_CAP_CCS_RC,
+
+		.ccs.packed_aux_planes = BIT(1),
+
+		FORMAT_OVERRIDE(gen12_ccs_formats),
+	}, {
+		.modifier = I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC,
+		.display_ver = { 12, 13 },
+		.plane_caps = INTEL_PLANE_CAP_TILING_Y | INTEL_PLANE_CAP_CCS_RC_CC,
+
+		.ccs.cc_planes = BIT(2),
+		.ccs.packed_aux_planes = BIT(1),
+
+		FORMAT_OVERRIDE(gen12_ccs_cc_formats),
+	}, {
+		.modifier = I915_FORMAT_MOD_Yf_TILED_CCS,
+		.display_ver = { 9, 11 },
+		.plane_caps = INTEL_PLANE_CAP_TILING_Yf | INTEL_PLANE_CAP_CCS_RC,
+
+		.ccs.packed_aux_planes = BIT(1),
+
+		FORMAT_OVERRIDE(skl_ccs_formats),
+	}, {
+		.modifier = I915_FORMAT_MOD_Y_TILED_CCS,
+		.display_ver = { 9, 11 },
+		.plane_caps = INTEL_PLANE_CAP_TILING_Y | INTEL_PLANE_CAP_CCS_RC,
+
+		.ccs.packed_aux_planes = BIT(1),
+
+		FORMAT_OVERRIDE(skl_ccs_formats),
+	}, {
+		.modifier = I915_FORMAT_MOD_Yf_TILED,
+		.display_ver = { 9, 11 },
+		.plane_caps = INTEL_PLANE_CAP_TILING_Yf,
+	}, {
+		.modifier = I915_FORMAT_MOD_Y_TILED,
+		.display_ver = { 9, 13 },
+		.plane_caps = INTEL_PLANE_CAP_TILING_Y,
+	}, {
+		.modifier = I915_FORMAT_MOD_X_TILED,
+		.display_ver = DISPLAY_VER_ALL,
+		.plane_caps = INTEL_PLANE_CAP_TILING_X,
+	}, {
+		.modifier = DRM_FORMAT_MOD_LINEAR,
+		.display_ver = DISPLAY_VER_ALL,
+	},
+};
+
+static const struct intel_modifier_desc *lookup_modifier_or_null(u64 modifier)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(intel_modifiers); i++)
+		if (intel_modifiers[i].modifier == modifier)
+			return &intel_modifiers[i];
+
+	return NULL;
+}
+
+static const struct intel_modifier_desc *lookup_modifier(u64 modifier)
+{
+	const struct intel_modifier_desc *md = lookup_modifier_or_null(modifier);
+
+	if (WARN_ON(!md))
+		return &intel_modifiers[0];
+
+	return md;
+}
+
+static const struct drm_format_info *
+lookup_format_info(const struct drm_format_info formats[],
+		   int num_formats, u32 format)
+{
+	int i;
+
+	for (i = 0; i < num_formats; i++) {
+		if (formats[i].format == format)
+			return &formats[i];
+	}
+
+	return NULL;
+}
+
+/**
+ * intel_fb_get_format_info: Get a modifier specific format information
+ * @cmd: FB add command structure
+ *
+ * Returns:
+ * Returns the format information for @cmd->pixel_format specific to @cmd->modifier[0],
+ * or %NULL if the modifier doesn't override the format.
+ */
+const struct drm_format_info *
+intel_fb_get_format_info(const struct drm_mode_fb_cmd2 *cmd)
+{
+	const struct intel_modifier_desc *md = lookup_modifier_or_null(cmd->modifier[0]);
+
+	if (!md || !md->formats)
+		return NULL;
+
+	return lookup_format_info(md->formats, md->format_count, cmd->pixel_format);
+}
+
+static bool plane_caps_contain_any(u8 caps, u8 mask)
+{
+	return caps & mask;
+}
+
+static bool plane_caps_contain_all(u8 caps, u8 mask)
+{
+	return (caps & mask) == mask;
+}
+
+/**
+ * intel_fb_is_ccs_modifier: Check if a modifier is a CCS modifier type
+ * @modifier: Modifier to check
+ *
+ * Returns:
+ * Returns %true if @modifier is a render, render with color clear or
+ * media compression modifier.
+ */
+bool intel_fb_is_ccs_modifier(u64 modifier)
+{
+	return plane_caps_contain_any(lookup_modifier(modifier)->plane_caps,
+				      INTEL_PLANE_CAP_CCS_MASK);
+}
+
+/**
+ * intel_fb_is_rc_ccs_cc_modifier: Check if a modifier is an RC CCS CC modifier type
+ * @modifier: Modifier to check
+ *
+ * Returns:
+ * Returns %true if @modifier is a render with color clear modifier.
+ */
+bool intel_fb_is_rc_ccs_cc_modifier(u64 modifier)
+{
+	return plane_caps_contain_any(lookup_modifier(modifier)->plane_caps,
+				      INTEL_PLANE_CAP_CCS_RC_CC);
+}
+
+/**
+ * intel_fb_is_mc_ccs_modifier: Check if a modifier is an MC CCS modifier type
+ * @modifier: Modifier to check
+ *
+ * Returns:
+ * Returns %true if @modifier is a media compression modifier.
+ */
+bool intel_fb_is_mc_ccs_modifier(u64 modifier)
+{
+	return plane_caps_contain_any(lookup_modifier(modifier)->plane_caps,
+				      INTEL_PLANE_CAP_CCS_MC);
+}
+
+static bool check_modifier_display_ver_range(const struct intel_modifier_desc *md,
+					     u8 display_ver_from, u8 display_ver_until)
+{
+	return md->display_ver.from <= display_ver_until &&
+		display_ver_from <= md->display_ver.until;
+}
+
+static bool plane_has_modifier(struct drm_i915_private *i915,
+			       u8 plane_caps,
+			       const struct intel_modifier_desc *md)
+{
+	if (!IS_DISPLAY_VER(i915, md->display_ver.from, md->display_ver.until))
+		return false;
+
+	if (!plane_caps_contain_all(plane_caps, md->plane_caps))
+		return false;
+
+	return true;
+}
+
+/**
+ * intel_fb_plane_get_modifiers: Get the modifiers for the given platform and plane capabilities
+ * @i915: i915 device instance
+ * @plane_caps: capabilities for the plane the modifiers are queried for
+ *
+ * Returns:
+ * Returns the list of modifiers allowed by the @i915 platform and @plane_caps.
+ * The caller must free the returned buffer.
+ */
+u64 *intel_fb_plane_get_modifiers(struct drm_i915_private *i915,
+				  u8 plane_caps)
+{
+	u64 *list, *p;
+	int count = 1;		/* +1 for invalid modifier terminator */
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(intel_modifiers); i++) {
+		if (plane_has_modifier(i915, plane_caps, &intel_modifiers[i]))
+			count++;
+	}
+
+	list = kmalloc_array(count, sizeof(*list), GFP_KERNEL);
+	if (drm_WARN_ON(&i915->drm, !list))
+		return NULL;
+
+	p = list;
+	for (i = 0; i < ARRAY_SIZE(intel_modifiers); i++) {
+		if (plane_has_modifier(i915, plane_caps, &intel_modifiers[i]))
+			*p++ = intel_modifiers[i].modifier;
+	}
+	*p++ = DRM_FORMAT_MOD_INVALID;
+
+	return list;
+}
+
+/**
+ * intel_fb_plane_supports_modifier: Determine if a modifier is supported by the given plane
+ * @plane: Plane to check the modifier support for
+ * @modifier: The modifier to check the support for
+ *
+ * Returns:
+ * %true if the @modifier is supported on @plane.
+ */
+bool intel_fb_plane_supports_modifier(struct intel_plane *plane, u64 modifier)
+{
+	int i;
+
+	for (i = 0; i < plane->base.modifier_count; i++)
+		if (plane->base.modifiers[i] == modifier)
+			return true;
+
+	return false;
+}
+
+static bool format_is_yuv_semiplanar(const struct intel_modifier_desc *md,
+				     const struct drm_format_info *info)
+{
+	if (!info->is_yuv)
+		return false;
+
+	if (hweight8(md->ccs.planar_aux_planes) == 2)
+		return info->num_planes == 4;
+	else
+		return info->num_planes == 2;
+}
+
+/**
+ * intel_format_info_is_yuv_semiplanar: Check if the given format is YUV semiplanar
+ * @info: format to check
+ * @modifier: modifier used with the format
+ *
+ * Returns:
+ * %true if @info / @modifier is YUV semiplanar.
+ */
+bool intel_format_info_is_yuv_semiplanar(const struct drm_format_info *info,
+					 u64 modifier)
+{
+	return format_is_yuv_semiplanar(lookup_modifier(modifier), info);
+}
+
+static u8 ccs_aux_plane_mask(const struct intel_modifier_desc *md,
+			     const struct drm_format_info *format)
+{
+	if (format_is_yuv_semiplanar(md, format))
+		return md->ccs.planar_aux_planes;
+	else
+		return md->ccs.packed_aux_planes;
+}
+
+/**
+ * intel_fb_is_ccs_aux_plane: Check if a framebuffer color plane is a CCS AUX plane
+ * @fb: Framebuffer
+ * @color_plane: color plane index to check
+ *
+ * Returns:
+ * Returns %true if @fb's color plane at index @color_plane is a CCS AUX plane.
+ */
+bool intel_fb_is_ccs_aux_plane(const struct drm_framebuffer *fb, int color_plane)
+{
+	const struct intel_modifier_desc *md = lookup_modifier(fb->modifier);
+
+	return ccs_aux_plane_mask(md, fb->format) & BIT(color_plane);
+}
+
+/**
+ * intel_fb_is_gen12_ccs_aux_plane: Check if a framebuffer color plane is a GEN12 CCS AUX plane
+ * @fb: Framebuffer
+ * @color_plane: color plane index to check
+ *
+ * Returns:
+ * Returns %true if @fb's color plane at index @color_plane is a GEN12 CCS AUX plane.
+ */
+static bool intel_fb_is_gen12_ccs_aux_plane(const struct drm_framebuffer *fb, int color_plane)
+{
+	const struct intel_modifier_desc *md = lookup_modifier(fb->modifier);
+
+	return check_modifier_display_ver_range(md, 12, 13) &&
+	       ccs_aux_plane_mask(md, fb->format) & BIT(color_plane);
+}
+
+/**
+ * intel_fb_rc_ccs_cc_plane: Get the CCS CC color plane index for a framebuffer
+ * @fb: Framebuffer
+ *
+ * Returns:
+ * Returns the index of the color clear plane for @fb, or -1 if @fb is not a
+ * framebuffer using a render compression/color clear modifier.
+ */
+int intel_fb_rc_ccs_cc_plane(const struct drm_framebuffer *fb)
+{
+	const struct intel_modifier_desc *md = lookup_modifier(fb->modifier);
+
+	if (!md->ccs.cc_planes)
+		return -1;
+
+	drm_WARN_ON_ONCE(fb->dev, hweight8(md->ccs.cc_planes) > 1);
+
+	return ilog2((int)md->ccs.cc_planes);
+}
+
+static bool is_gen12_ccs_cc_plane(const struct drm_framebuffer *fb, int color_plane)
+{
+	return intel_fb_rc_ccs_cc_plane(fb) == color_plane;
+}
+
+static bool is_semiplanar_uv_plane(const struct drm_framebuffer *fb, int color_plane)
+{
+	return intel_format_info_is_yuv_semiplanar(fb->format, fb->modifier) &&
+		color_plane == 1;
+}
+
+bool is_surface_linear(const struct drm_framebuffer *fb, int color_plane)
+{
+	return fb->modifier == DRM_FORMAT_MOD_LINEAR ||
+	       intel_fb_is_gen12_ccs_aux_plane(fb, color_plane) ||
+	       is_gen12_ccs_cc_plane(fb, color_plane);
+}
+
+int main_to_ccs_plane(const struct drm_framebuffer *fb, int main_plane)
+{
+	drm_WARN_ON(fb->dev, !intel_fb_is_ccs_modifier(fb->modifier) ||
+		    (main_plane && main_plane >= fb->format->num_planes / 2));
+
+	return fb->format->num_planes / 2 + main_plane;
+}
+
+int skl_ccs_to_main_plane(const struct drm_framebuffer *fb, int ccs_plane)
+{
+	drm_WARN_ON(fb->dev, !intel_fb_is_ccs_modifier(fb->modifier) ||
+		    ccs_plane < fb->format->num_planes / 2);
+
+	if (is_gen12_ccs_cc_plane(fb, ccs_plane))
+		return 0;
+
+	return ccs_plane - fb->format->num_planes / 2;
+}
+
+static unsigned int gen12_ccs_aux_stride(struct intel_framebuffer *fb, int ccs_plane)
+{
+	int main_plane = skl_ccs_to_main_plane(&fb->base, ccs_plane);
+	unsigned int main_stride = fb->base.pitches[main_plane];
+	unsigned int main_tile_width = intel_tile_width_bytes(&fb->base, main_plane);
+
+	return DIV_ROUND_UP(main_stride, 4 * main_tile_width) * 64;
+}
+
+int skl_main_to_aux_plane(const struct drm_framebuffer *fb, int main_plane)
+{
+	const struct intel_modifier_desc *md = lookup_modifier(fb->modifier);
+	struct drm_i915_private *i915 = to_i915(fb->dev);
+
+	if (md->ccs.packed_aux_planes | md->ccs.planar_aux_planes)
+		return main_to_ccs_plane(fb, main_plane);
+	else if (DISPLAY_VER(i915) < 11 &&
+		 format_is_yuv_semiplanar(md, fb->format))
+		return 1;
+	else
+		return 0;
+}
+
+unsigned int intel_tile_size(const struct drm_i915_private *i915)
+{
+	return DISPLAY_VER(i915) == 2 ? 2048 : 4096;
+}
+
+unsigned int
+intel_tile_width_bytes(const struct drm_framebuffer *fb, int color_plane)
+{
+	struct drm_i915_private *dev_priv = to_i915(fb->dev);
+	unsigned int cpp = fb->format->cpp[color_plane];
+
+	switch (fb->modifier) {
+	case DRM_FORMAT_MOD_LINEAR:
+		return intel_tile_size(dev_priv);
+	case I915_FORMAT_MOD_X_TILED:
+		if (DISPLAY_VER(dev_priv) == 2)
+			return 128;
+		else
+			return 512;
+	case I915_FORMAT_MOD_4_TILED_DG2_RC_CCS:
+	case I915_FORMAT_MOD_4_TILED_DG2_RC_CCS_CC:
+	case I915_FORMAT_MOD_4_TILED_DG2_MC_CCS:
+	case I915_FORMAT_MOD_4_TILED:
+		/*
+		 * Each 4K tile consists of 64B(8*8) subtiles, with
+		 * same shape as Y Tile(i.e 4*16B OWords)
+		 */
+		return 128;
+	case I915_FORMAT_MOD_Y_TILED_CCS:
+		if (intel_fb_is_ccs_aux_plane(fb, color_plane))
+			return 128;
+		fallthrough;
+	case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS:
+	case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC:
+	case I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS:
+		if (intel_fb_is_ccs_aux_plane(fb, color_plane) ||
+		    is_gen12_ccs_cc_plane(fb, color_plane))
+			return 64;
+		fallthrough;
+	case I915_FORMAT_MOD_Y_TILED:
+		if (DISPLAY_VER(dev_priv) == 2 || HAS_128_BYTE_Y_TILING(dev_priv))
+			return 128;
+		else
+			return 512;
+	case I915_FORMAT_MOD_Yf_TILED_CCS:
+		if (intel_fb_is_ccs_aux_plane(fb, color_plane))
+			return 128;
+		fallthrough;
+	case I915_FORMAT_MOD_Yf_TILED:
+		switch (cpp) {
+		case 1:
+			return 64;
+		case 2:
+		case 4:
+			return 128;
+		case 8:
+		case 16:
+			return 256;
+		default:
+			MISSING_CASE(cpp);
+			return cpp;
+		}
+		break;
+	default:
+		MISSING_CASE(fb->modifier);
+		return cpp;
+	}
+}
+
+unsigned int intel_tile_height(const struct drm_framebuffer *fb, int color_plane)
+{
+	return intel_tile_size(to_i915(fb->dev)) /
+		intel_tile_width_bytes(fb, color_plane);
+}
+
+/*
+ * Return the tile dimensions in pixel units, based on the (2 or 4 kbyte) GTT
+ * page tile size.
+ */
+static void intel_tile_dims(const struct drm_framebuffer *fb, int color_plane,
+			    unsigned int *tile_width,
+			    unsigned int *tile_height)
+{
+	unsigned int tile_width_bytes = intel_tile_width_bytes(fb, color_plane);
+	unsigned int cpp = fb->format->cpp[color_plane];
+
+	*tile_width = tile_width_bytes / cpp;
+	*tile_height = intel_tile_height(fb, color_plane);
+}
+
+/*
+ * Return the tile dimensions in pixel units, based on the tile block size.
+ * The block covers the full GTT page sized tile on all tiled surfaces and
+ * it's a 64 byte portion of the tile on TGL+ CCS surfaces.
+ */
+static void intel_tile_block_dims(const struct drm_framebuffer *fb, int color_plane,
+				  unsigned int *tile_width,
+				  unsigned int *tile_height)
+{
+	intel_tile_dims(fb, color_plane, tile_width, tile_height);
+
+	if (intel_fb_is_gen12_ccs_aux_plane(fb, color_plane))
+		*tile_height = 1;
+}
+
+unsigned int intel_tile_row_size(const struct drm_framebuffer *fb, int color_plane)
+{
+	unsigned int tile_width, tile_height;
+
+	intel_tile_dims(fb, color_plane, &tile_width, &tile_height);
+
+	return fb->pitches[color_plane] * tile_height;
+}
+
+unsigned int
+intel_fb_align_height(const struct drm_framebuffer *fb,
+		      int color_plane, unsigned int height)
+{
+	unsigned int tile_height = intel_tile_height(fb, color_plane);
+
+	return ALIGN(height, tile_height);
+}
+
+static unsigned int intel_fb_modifier_to_tiling(u64 fb_modifier)
+{
+	u8 tiling_caps = lookup_modifier(fb_modifier)->plane_caps &
+			 INTEL_PLANE_CAP_TILING_MASK;
+
+	switch (tiling_caps) {
+	case INTEL_PLANE_CAP_TILING_Y:
+		return I915_TILING_Y;
+	case INTEL_PLANE_CAP_TILING_X:
+		return I915_TILING_X;
+	case INTEL_PLANE_CAP_TILING_4:
+	case INTEL_PLANE_CAP_TILING_Yf:
+	case INTEL_PLANE_CAP_TILING_NONE:
+		return I915_TILING_NONE;
+	default:
+		MISSING_CASE(tiling_caps);
+		return I915_TILING_NONE;
+	}
+}
+
+static bool intel_modifier_uses_dpt(struct drm_i915_private *i915, u64 modifier)
+{
+	return DISPLAY_VER(i915) >= 13 && modifier != DRM_FORMAT_MOD_LINEAR;
+}
+
+bool intel_fb_uses_dpt(const struct drm_framebuffer *fb)
+{
+	return fb && intel_modifier_uses_dpt(to_i915(fb->dev), fb->modifier);
+}
+
+unsigned int intel_cursor_alignment(const struct drm_i915_private *i915)
+{
+	if (IS_I830(i915))
+		return 16 * 1024;
+	else if (IS_I85X(i915))
+		return 256;
+	else if (IS_I845G(i915) || IS_I865G(i915))
+		return 32;
+	else
+		return 4 * 1024;
+}
+
+static unsigned int intel_linear_alignment(const struct drm_i915_private *dev_priv)
+{
+	if (DISPLAY_VER(dev_priv) >= 9)
+		return 256 * 1024;
+	else if (IS_I965G(dev_priv) || IS_I965GM(dev_priv) ||
+		 IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
+		return 128 * 1024;
+	else if (DISPLAY_VER(dev_priv) >= 4)
+		return 4 * 1024;
+	else
+		return 0;
+}
+
+unsigned int intel_surf_alignment(const struct drm_framebuffer *fb,
+				  int color_plane)
+{
+	struct drm_i915_private *dev_priv = to_i915(fb->dev);
+
+	if (intel_fb_uses_dpt(fb))
+		return 512 * 4096;
+
+	/* AUX_DIST needs only 4K alignment */
+	if (intel_fb_is_ccs_aux_plane(fb, color_plane))
+		return 4096;
+
+	if (is_semiplanar_uv_plane(fb, color_plane)) {
+		/*
+		 * TODO: cross-check wrt. the bspec stride in bytes * 64 bytes
+		 * alignment for linear UV planes on all platforms.
+		 */
+		if (DISPLAY_VER(dev_priv) >= 12) {
+			if (fb->modifier == DRM_FORMAT_MOD_LINEAR)
+				return intel_linear_alignment(dev_priv);
+
+			return intel_tile_row_size(fb, color_plane);
+		}
+
+		return 4096;
+	}
+
+	drm_WARN_ON(&dev_priv->drm, color_plane != 0);
+
+	switch (fb->modifier) {
+	case DRM_FORMAT_MOD_LINEAR:
+		return intel_linear_alignment(dev_priv);
+	case I915_FORMAT_MOD_X_TILED:
+		if (HAS_ASYNC_FLIPS(dev_priv))
+			return 256 * 1024;
+		return 0;
+	case I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS:
+	case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS:
+	case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC:
+		return 16 * 1024;
+	case I915_FORMAT_MOD_Y_TILED_CCS:
+	case I915_FORMAT_MOD_Yf_TILED_CCS:
+	case I915_FORMAT_MOD_Y_TILED:
+	case I915_FORMAT_MOD_4_TILED:
+	case I915_FORMAT_MOD_Yf_TILED:
+		return 1 * 1024 * 1024;
+	case I915_FORMAT_MOD_4_TILED_DG2_RC_CCS:
+	case I915_FORMAT_MOD_4_TILED_DG2_RC_CCS_CC:
+	case I915_FORMAT_MOD_4_TILED_DG2_MC_CCS:
+		return 16 * 1024;
+	default:
+		MISSING_CASE(fb->modifier);
+		return 0;
+	}
+}
+
+void intel_fb_plane_get_subsampling(int *hsub, int *vsub,
+				    const struct drm_framebuffer *fb,
+				    int color_plane)
+{
+	int main_plane;
+
+	if (color_plane == 0) {
+		*hsub = 1;
+		*vsub = 1;
+
+		return;
+	}
+
+	/*
+	 * TODO: Deduct the subsampling from the char block for all CCS
+	 * formats and planes.
+	 */
+	if (!intel_fb_is_gen12_ccs_aux_plane(fb, color_plane)) {
+		*hsub = fb->format->hsub;
+		*vsub = fb->format->vsub;
+
+		return;
+	}
+
+	main_plane = skl_ccs_to_main_plane(fb, color_plane);
+	*hsub = drm_format_info_block_width(fb->format, color_plane) /
+		drm_format_info_block_width(fb->format, main_plane);
+
+	/*
+	 * The min stride check in the core framebuffer_check() function
+	 * assumes that format->hsub applies to every plane except for the
+	 * first plane. That's incorrect for the CCS AUX plane of the first
+	 * plane, but for the above check to pass we must define the block
+	 * width with that subsampling applied to it. Adjust the width here
+	 * accordingly, so we can calculate the actual subsampling factor.
+	 */
+	if (main_plane == 0)
+		*hsub *= fb->format->hsub;
+
+	*vsub = 32;
+}
+
+static void intel_fb_plane_dims(const struct intel_framebuffer *fb, int color_plane, int *w, int *h)
+{
+	int main_plane = intel_fb_is_ccs_aux_plane(&fb->base, color_plane) ?
+			 skl_ccs_to_main_plane(&fb->base, color_plane) : 0;
+	unsigned int main_width = fb->base.width;
+	unsigned int main_height = fb->base.height;
+	int main_hsub, main_vsub;
+	int hsub, vsub;
+
+	intel_fb_plane_get_subsampling(&main_hsub, &main_vsub, &fb->base, main_plane);
+	intel_fb_plane_get_subsampling(&hsub, &vsub, &fb->base, color_plane);
+
+	*w = DIV_ROUND_UP(main_width, main_hsub * hsub);
+	*h = DIV_ROUND_UP(main_height, main_vsub * vsub);
+}
+
+static u32 intel_adjust_tile_offset(int *x, int *y,
+				    unsigned int tile_width,
+				    unsigned int tile_height,
+				    unsigned int tile_size,
+				    unsigned int pitch_tiles,
+				    u32 old_offset,
+				    u32 new_offset)
+{
+	unsigned int pitch_pixels = pitch_tiles * tile_width;
+	unsigned int tiles;
+
+	WARN_ON(old_offset & (tile_size - 1));
+	WARN_ON(new_offset & (tile_size - 1));
+	WARN_ON(new_offset > old_offset);
+
+	tiles = (old_offset - new_offset) / tile_size;
+
+	*y += tiles / pitch_tiles * tile_height;
+	*x += tiles % pitch_tiles * tile_width;
+
+	/* minimize x in case it got needlessly big */
+	*y += *x / pitch_pixels * tile_height;
+	*x %= pitch_pixels;
+
+	return new_offset;
+}
+
+static u32 intel_adjust_linear_offset(int *x, int *y,
+				      unsigned int cpp,
+				      unsigned int pitch,
+				      u32 old_offset,
+				      u32 new_offset)
+{
+	old_offset += *y * pitch + *x * cpp;
+
+	*y = (old_offset - new_offset) / pitch;
+	*x = ((old_offset - new_offset) - *y * pitch) / cpp;
+
+	return new_offset;
+}
+
+static u32 intel_adjust_aligned_offset(int *x, int *y,
+				       const struct drm_framebuffer *fb,
+				       int color_plane,
+				       unsigned int rotation,
+				       unsigned int pitch,
+				       u32 old_offset, u32 new_offset)
+{
+	struct drm_i915_private *i915 = to_i915(fb->dev);
+	unsigned int cpp = fb->format->cpp[color_plane];
+
+	drm_WARN_ON(&i915->drm, new_offset > old_offset);
+
+	if (!is_surface_linear(fb, color_plane)) {
+		unsigned int tile_size, tile_width, tile_height;
+		unsigned int pitch_tiles;
+
+		tile_size = intel_tile_size(i915);
+		intel_tile_dims(fb, color_plane, &tile_width, &tile_height);
+
+		if (drm_rotation_90_or_270(rotation)) {
+			pitch_tiles = pitch / tile_height;
+			swap(tile_width, tile_height);
+		} else {
+			pitch_tiles = pitch / (tile_width * cpp);
+		}
+
+		intel_adjust_tile_offset(x, y, tile_width, tile_height,
+					 tile_size, pitch_tiles,
+					 old_offset, new_offset);
+	} else {
+		intel_adjust_linear_offset(x, y, cpp, pitch,
+					   old_offset, new_offset);
+	}
+
+	return new_offset;
+}
+
+/*
+ * Adjust the tile offset by moving the difference into
+ * the x/y offsets.
+ */
+u32 intel_plane_adjust_aligned_offset(int *x, int *y,
+				      const struct intel_plane_state *state,
+				      int color_plane,
+				      u32 old_offset, u32 new_offset)
+{
+	return intel_adjust_aligned_offset(x, y, state->hw.fb, color_plane,
+					   state->hw.rotation,
+					   state->view.color_plane[color_plane].mapping_stride,
+					   old_offset, new_offset);
+}
+
+/*
+ * Computes the aligned offset to the base tile and adjusts
+ * x, y. bytes per pixel is assumed to be a power-of-two.
+ *
+ * In the 90/270 rotated case, x and y are assumed
+ * to be already rotated to match the rotated GTT view, and
+ * pitch is the tile_height aligned framebuffer height.
+ *
+ * This function is used when computing the derived information
+ * under intel_framebuffer, so using any of that information
+ * here is not allowed. Anything under drm_framebuffer can be
+ * used. This is why the user has to pass in the pitch since it
+ * is specified in the rotated orientation.
+ */
+static u32 intel_compute_aligned_offset(struct drm_i915_private *i915,
+					int *x, int *y,
+					const struct drm_framebuffer *fb,
+					int color_plane,
+					unsigned int pitch,
+					unsigned int rotation,
+					u32 alignment)
+{
+	unsigned int cpp = fb->format->cpp[color_plane];
+	u32 offset, offset_aligned;
+
+	if (!is_surface_linear(fb, color_plane)) {
+		unsigned int tile_size, tile_width, tile_height;
+		unsigned int tile_rows, tiles, pitch_tiles;
+
+		tile_size = intel_tile_size(i915);
+		intel_tile_dims(fb, color_plane, &tile_width, &tile_height);
+
+		if (drm_rotation_90_or_270(rotation)) {
+			pitch_tiles = pitch / tile_height;
+			swap(tile_width, tile_height);
+		} else {
+			pitch_tiles = pitch / (tile_width * cpp);
+		}
+
+		tile_rows = *y / tile_height;
+		*y %= tile_height;
+
+		tiles = *x / tile_width;
+		*x %= tile_width;
+
+		offset = (tile_rows * pitch_tiles + tiles) * tile_size;
+
+		offset_aligned = offset;
+		if (alignment)
+			offset_aligned = rounddown(offset_aligned, alignment);
+
+		intel_adjust_tile_offset(x, y, tile_width, tile_height,
+					 tile_size, pitch_tiles,
+					 offset, offset_aligned);
+	} else {
+		offset = *y * pitch + *x * cpp;
+		offset_aligned = offset;
+		if (alignment) {
+			offset_aligned = rounddown(offset_aligned, alignment);
+			*y = (offset % alignment) / pitch;
+			*x = ((offset % alignment) - *y * pitch) / cpp;
+		} else {
+			*y = *x = 0;
+		}
+	}
+
+	return offset_aligned;
+}
+
+u32 intel_plane_compute_aligned_offset(int *x, int *y,
+				       const struct intel_plane_state *state,
+				       int color_plane)
+{
+	struct intel_plane *intel_plane = to_intel_plane(state->uapi.plane);
+	struct drm_i915_private *i915 = to_i915(intel_plane->base.dev);
+	const struct drm_framebuffer *fb = state->hw.fb;
+	unsigned int rotation = state->hw.rotation;
+	int pitch = state->view.color_plane[color_plane].mapping_stride;
+	u32 alignment;
+
+	if (intel_plane->id == PLANE_CURSOR)
+		alignment = intel_cursor_alignment(i915);
+	else
+		alignment = intel_surf_alignment(fb, color_plane);
+
+	return intel_compute_aligned_offset(i915, x, y, fb, color_plane,
+					    pitch, rotation, alignment);
+}
+
+/* Convert the fb->offset[] into x/y offsets */
+static int intel_fb_offset_to_xy(int *x, int *y,
+				 const struct drm_framebuffer *fb,
+				 int color_plane)
+{
+	struct drm_i915_private *i915 = to_i915(fb->dev);
+	unsigned int height;
+	u32 alignment;
+
+	if (DISPLAY_VER(i915) >= 12 &&
+	    !intel_fb_needs_pot_stride_remap(to_intel_framebuffer(fb)) &&
+	    is_semiplanar_uv_plane(fb, color_plane))
+		alignment = intel_tile_row_size(fb, color_plane);
+	else if (fb->modifier != DRM_FORMAT_MOD_LINEAR)
+		alignment = intel_tile_size(i915);
+	else
+		alignment = 0;
+
+	if (alignment != 0 && fb->offsets[color_plane] % alignment) {
+		drm_dbg_kms(&i915->drm,
+			    "Misaligned offset 0x%08x for color plane %d\n",
+			    fb->offsets[color_plane], color_plane);
+		return -EINVAL;
+	}
+
+	height = drm_framebuffer_plane_height(fb->height, fb, color_plane);
+	height = ALIGN(height, intel_tile_height(fb, color_plane));
+
+	/* Catch potential overflows early */
+	if (add_overflows_t(u32, mul_u32_u32(height, fb->pitches[color_plane]),
+			    fb->offsets[color_plane])) {
+		drm_dbg_kms(&i915->drm,
+			    "Bad offset 0x%08x or pitch %d for color plane %d\n",
+			    fb->offsets[color_plane], fb->pitches[color_plane],
+			    color_plane);
+		return -ERANGE;
+	}
+
+	*x = 0;
+	*y = 0;
+
+	intel_adjust_aligned_offset(x, y,
+				    fb, color_plane, DRM_MODE_ROTATE_0,
+				    fb->pitches[color_plane],
+				    fb->offsets[color_plane], 0);
+
+	return 0;
+}
+
+static int intel_fb_check_ccs_xy(const struct drm_framebuffer *fb, int ccs_plane, int x, int y)
+{
+	struct drm_i915_private *i915 = to_i915(fb->dev);
+	const struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
+	int main_plane;
+	int hsub, vsub;
+	int tile_width, tile_height;
+	int ccs_x, ccs_y;
+	int main_x, main_y;
+
+	if (!intel_fb_is_ccs_aux_plane(fb, ccs_plane))
+		return 0;
+
+	/*
+	 * While all the tile dimensions are based on a 2k or 4k GTT page size
+	 * here the main and CCS coordinates must match only within a (64 byte
+	 * on TGL+) block inside the tile.
+	 */
+	intel_tile_block_dims(fb, ccs_plane, &tile_width, &tile_height);
+	intel_fb_plane_get_subsampling(&hsub, &vsub, fb, ccs_plane);
+
+	tile_width *= hsub;
+	tile_height *= vsub;
+
+	ccs_x = (x * hsub) % tile_width;
+	ccs_y = (y * vsub) % tile_height;
+
+	main_plane = skl_ccs_to_main_plane(fb, ccs_plane);
+	main_x = intel_fb->normal_view.color_plane[main_plane].x % tile_width;
+	main_y = intel_fb->normal_view.color_plane[main_plane].y % tile_height;
+
+	/*
+	 * CCS doesn't have its own x/y offset register, so the intra CCS tile
+	 * x/y offsets must match between CCS and the main surface.
+	 */
+	if (main_x != ccs_x || main_y != ccs_y) {
+		drm_dbg_kms(&i915->drm,
+			      "Bad CCS x/y (main %d,%d ccs %d,%d) full (main %d,%d ccs %d,%d)\n",
+			      main_x, main_y,
+			      ccs_x, ccs_y,
+			      intel_fb->normal_view.color_plane[main_plane].x,
+			      intel_fb->normal_view.color_plane[main_plane].y,
+			      x, y);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static bool intel_plane_can_remap(const struct intel_plane_state *plane_state)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	struct drm_i915_private *i915 = to_i915(plane->base.dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	int i;
+
+	/* We don't want to deal with remapping with cursors */
+	if (plane->id == PLANE_CURSOR)
+		return false;
+
+	/*
+	 * The display engine limits already match/exceed the
+	 * render engine limits, so not much point in remapping.
+	 * Would also need to deal with the fence POT alignment
+	 * and gen2 2KiB GTT tile size.
+	 */
+	if (DISPLAY_VER(i915) < 4)
+		return false;
+
+	/*
+	 * The new CCS hash mode isn't compatible with remapping as
+	 * the virtual address of the pages affects the compressed data.
+	 */
+	if (intel_fb_is_ccs_modifier(fb->modifier))
+		return false;
+
+	/* Linear needs a page aligned stride for remapping */
+	if (fb->modifier == DRM_FORMAT_MOD_LINEAR) {
+		unsigned int alignment = intel_tile_size(i915) - 1;
+
+		for (i = 0; i < fb->format->num_planes; i++) {
+			if (fb->pitches[i] & alignment)
+				return false;
+		}
+	}
+
+	return true;
+}
+
+bool intel_fb_needs_pot_stride_remap(const struct intel_framebuffer *fb)
+{
+	struct drm_i915_private *i915 = to_i915(fb->base.dev);
+
+	return (IS_ALDERLAKE_P(i915) || DISPLAY_VER(i915) >= 14) &&
+		intel_fb_uses_dpt(&fb->base);
+}
+
+static int intel_fb_pitch(const struct intel_framebuffer *fb, int color_plane, unsigned int rotation)
+{
+	if (drm_rotation_90_or_270(rotation))
+		return fb->rotated_view.color_plane[color_plane].mapping_stride;
+	else if (intel_fb_needs_pot_stride_remap(fb))
+		return fb->remapped_view.color_plane[color_plane].mapping_stride;
+	else
+		return fb->normal_view.color_plane[color_plane].mapping_stride;
+}
+
+static bool intel_plane_needs_remap(const struct intel_plane_state *plane_state)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	const struct intel_framebuffer *fb = to_intel_framebuffer(plane_state->hw.fb);
+	unsigned int rotation = plane_state->hw.rotation;
+	u32 stride, max_stride;
+
+	/*
+	 * No remapping for invisible planes since we don't have
+	 * an actual source viewport to remap.
+	 */
+	if (!plane_state->uapi.visible)
+		return false;
+
+	if (!intel_plane_can_remap(plane_state))
+		return false;
+
+	/*
+	 * FIXME: aux plane limits on gen9+ are
+	 * unclear in Bspec, for now no checking.
+	 */
+	stride = intel_fb_pitch(fb, 0, rotation);
+	max_stride = plane->max_stride(plane, fb->base.format->format,
+				       fb->base.modifier, rotation);
+
+	return stride > max_stride;
+}
+
+static int convert_plane_offset_to_xy(const struct intel_framebuffer *fb, int color_plane,
+				      int plane_width, int *x, int *y)
+{
+	struct drm_i915_gem_object *obj = intel_fb_obj(&fb->base);
+	int ret;
+
+	ret = intel_fb_offset_to_xy(x, y, &fb->base, color_plane);
+	if (ret) {
+		drm_dbg_kms(fb->base.dev,
+			    "bad fb plane %d offset: 0x%x\n",
+			    color_plane, fb->base.offsets[color_plane]);
+		return ret;
+	}
+
+	ret = intel_fb_check_ccs_xy(&fb->base, color_plane, *x, *y);
+	if (ret)
+		return ret;
+
+	/*
+	 * The fence (if used) is aligned to the start of the object
+	 * so having the framebuffer wrap around across the edge of the
+	 * fenced region doesn't really work. We have no API to configure
+	 * the fence start offset within the object (nor could we probably
+	 * on gen2/3). So it's just easier if we just require that the
+	 * fb layout agrees with the fence layout. We already check that the
+	 * fb stride matches the fence stride elsewhere.
+	 */
+	if (color_plane == 0 && i915_gem_object_is_tiled(obj) &&
+	    (*x + plane_width) * fb->base.format->cpp[color_plane] > fb->base.pitches[color_plane]) {
+		drm_dbg_kms(fb->base.dev,
+			    "bad fb plane %d offset: 0x%x\n",
+			    color_plane, fb->base.offsets[color_plane]);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static u32 calc_plane_aligned_offset(const struct intel_framebuffer *fb, int color_plane, int *x, int *y)
+{
+	struct drm_i915_private *i915 = to_i915(fb->base.dev);
+	unsigned int tile_size = intel_tile_size(i915);
+	u32 offset;
+
+	offset = intel_compute_aligned_offset(i915, x, y, &fb->base, color_plane,
+					      fb->base.pitches[color_plane],
+					      DRM_MODE_ROTATE_0,
+					      tile_size);
+
+	return offset / tile_size;
+}
+
+struct fb_plane_view_dims {
+	unsigned int width, height;
+	unsigned int tile_width, tile_height;
+};
+
+static void init_plane_view_dims(const struct intel_framebuffer *fb, int color_plane,
+				 unsigned int width, unsigned int height,
+				 struct fb_plane_view_dims *dims)
+{
+	dims->width = width;
+	dims->height = height;
+
+	intel_tile_dims(&fb->base, color_plane, &dims->tile_width, &dims->tile_height);
+}
+
+static unsigned int
+plane_view_src_stride_tiles(const struct intel_framebuffer *fb, int color_plane,
+			    const struct fb_plane_view_dims *dims)
+{
+	return DIV_ROUND_UP(fb->base.pitches[color_plane],
+			    dims->tile_width * fb->base.format->cpp[color_plane]);
+}
+
+static unsigned int
+plane_view_dst_stride_tiles(const struct intel_framebuffer *fb, int color_plane,
+			    unsigned int pitch_tiles)
+{
+	if (intel_fb_needs_pot_stride_remap(fb)) {
+		/*
+		 * ADL_P, the only platform needing a POT stride has a minimum
+		 * of 8 main surface tiles.
+		 */
+		return roundup_pow_of_two(max(pitch_tiles, 8u));
+	} else {
+		return pitch_tiles;
+	}
+}
+
+static unsigned int
+plane_view_scanout_stride(const struct intel_framebuffer *fb, int color_plane,
+			  unsigned int tile_width,
+			  unsigned int src_stride_tiles, unsigned int dst_stride_tiles)
+{
+	struct drm_i915_private *i915 = to_i915(fb->base.dev);
+	unsigned int stride_tiles;
+
+	if ((IS_ALDERLAKE_P(i915) || DISPLAY_VER(i915) >= 14) &&
+	    src_stride_tiles < dst_stride_tiles)
+		stride_tiles = src_stride_tiles;
+	else
+		stride_tiles = dst_stride_tiles;
+
+	return stride_tiles * tile_width * fb->base.format->cpp[color_plane];
+}
+
+static unsigned int
+plane_view_width_tiles(const struct intel_framebuffer *fb, int color_plane,
+		       const struct fb_plane_view_dims *dims,
+		       int x)
+{
+	return DIV_ROUND_UP(x + dims->width, dims->tile_width);
+}
+
+static unsigned int
+plane_view_height_tiles(const struct intel_framebuffer *fb, int color_plane,
+			const struct fb_plane_view_dims *dims,
+			int y)
+{
+	return DIV_ROUND_UP(y + dims->height, dims->tile_height);
+}
+
+static unsigned int
+plane_view_linear_tiles(const struct intel_framebuffer *fb, int color_plane,
+			const struct fb_plane_view_dims *dims,
+			int x, int y)
+{
+	struct drm_i915_private *i915 = to_i915(fb->base.dev);
+	unsigned int size;
+
+	size = (y + dims->height) * fb->base.pitches[color_plane] +
+		x * fb->base.format->cpp[color_plane];
+
+	return DIV_ROUND_UP(size, intel_tile_size(i915));
+}
+
+#define assign_chk_ovf(i915, var, val) ({ \
+	drm_WARN_ON(&(i915)->drm, overflows_type(val, var)); \
+	(var) = (val); \
+})
+
+#define assign_bfld_chk_ovf(i915, var, val) ({ \
+	(var) = (val); \
+	drm_WARN_ON(&(i915)->drm, (var) != (val)); \
+	(var); \
+})
+
+static u32 calc_plane_remap_info(const struct intel_framebuffer *fb, int color_plane,
+				 const struct fb_plane_view_dims *dims,
+				 u32 obj_offset, u32 gtt_offset, int x, int y,
+				 struct intel_fb_view *view)
+{
+	struct drm_i915_private *i915 = to_i915(fb->base.dev);
+	struct intel_remapped_plane_info *remap_info = &view->gtt.remapped.plane[color_plane];
+	struct i915_color_plane_view *color_plane_info = &view->color_plane[color_plane];
+	unsigned int tile_width = dims->tile_width;
+	unsigned int tile_height = dims->tile_height;
+	unsigned int tile_size = intel_tile_size(i915);
+	struct drm_rect r;
+	u32 size = 0;
+
+	assign_bfld_chk_ovf(i915, remap_info->offset, obj_offset);
+
+	if (intel_fb_is_gen12_ccs_aux_plane(&fb->base, color_plane)) {
+		remap_info->linear = 1;
+
+		assign_chk_ovf(i915, remap_info->size,
+			       plane_view_linear_tiles(fb, color_plane, dims, x, y));
+	} else {
+		remap_info->linear = 0;
+
+		assign_chk_ovf(i915, remap_info->src_stride,
+			       plane_view_src_stride_tiles(fb, color_plane, dims));
+		assign_chk_ovf(i915, remap_info->width,
+			       plane_view_width_tiles(fb, color_plane, dims, x));
+		assign_chk_ovf(i915, remap_info->height,
+			       plane_view_height_tiles(fb, color_plane, dims, y));
+	}
+
+	if (view->gtt.type == I915_GTT_VIEW_ROTATED) {
+		drm_WARN_ON(&i915->drm, remap_info->linear);
+		check_array_bounds(i915, view->gtt.rotated.plane, color_plane);
+
+		assign_chk_ovf(i915, remap_info->dst_stride,
+			       plane_view_dst_stride_tiles(fb, color_plane, remap_info->height));
+
+		/* rotate the x/y offsets to match the GTT view */
+		drm_rect_init(&r, x, y, dims->width, dims->height);
+		drm_rect_rotate(&r,
+				remap_info->width * tile_width,
+				remap_info->height * tile_height,
+				DRM_MODE_ROTATE_270);
+
+		color_plane_info->x = r.x1;
+		color_plane_info->y = r.y1;
+
+		color_plane_info->mapping_stride = remap_info->dst_stride * tile_height;
+		color_plane_info->scanout_stride = color_plane_info->mapping_stride;
+
+		size += remap_info->dst_stride * remap_info->width;
+
+		/* rotate the tile dimensions to match the GTT view */
+		swap(tile_width, tile_height);
+	} else {
+		drm_WARN_ON(&i915->drm, view->gtt.type != I915_GTT_VIEW_REMAPPED);
+
+		check_array_bounds(i915, view->gtt.remapped.plane, color_plane);
+
+		if (view->gtt.remapped.plane_alignment) {
+			unsigned int aligned_offset = ALIGN(gtt_offset,
+							    view->gtt.remapped.plane_alignment);
+
+			size += aligned_offset - gtt_offset;
+			gtt_offset = aligned_offset;
+		}
+
+		color_plane_info->x = x;
+		color_plane_info->y = y;
+
+		if (remap_info->linear) {
+			color_plane_info->mapping_stride = fb->base.pitches[color_plane];
+			color_plane_info->scanout_stride = color_plane_info->mapping_stride;
+
+			size += remap_info->size;
+		} else {
+			unsigned int dst_stride;
+
+			/*
+			 * The hardware automagically calculates the CCS AUX surface
+			 * stride from the main surface stride so can't really remap a
+			 * smaller subset (unless we'd remap in whole AUX page units).
+			 */
+			if (intel_fb_needs_pot_stride_remap(fb) &&
+			    intel_fb_is_ccs_modifier(fb->base.modifier))
+				dst_stride = remap_info->src_stride;
+			else
+				dst_stride = remap_info->width;
+
+			dst_stride = plane_view_dst_stride_tiles(fb, color_plane, dst_stride);
+
+			assign_chk_ovf(i915, remap_info->dst_stride, dst_stride);
+			color_plane_info->mapping_stride = dst_stride *
+							   tile_width *
+							   fb->base.format->cpp[color_plane];
+			color_plane_info->scanout_stride =
+				plane_view_scanout_stride(fb, color_plane, tile_width,
+							  remap_info->src_stride,
+							  dst_stride);
+
+			size += dst_stride * remap_info->height;
+		}
+	}
+
+	/*
+	 * We only keep the x/y offsets, so push all of the gtt offset into
+	 * the x/y offsets.  x,y will hold the first pixel of the framebuffer
+	 * plane from the start of the remapped/rotated gtt mapping.
+	 */
+	if (remap_info->linear)
+		intel_adjust_linear_offset(&color_plane_info->x, &color_plane_info->y,
+					   fb->base.format->cpp[color_plane],
+					   color_plane_info->mapping_stride,
+					   gtt_offset * tile_size, 0);
+	else
+		intel_adjust_tile_offset(&color_plane_info->x, &color_plane_info->y,
+					 tile_width, tile_height,
+					 tile_size, remap_info->dst_stride,
+					 gtt_offset * tile_size, 0);
+
+	return size;
+}
+
+#undef assign_chk_ovf
+
+/* Return number of tiles @color_plane needs. */
+static unsigned int
+calc_plane_normal_size(const struct intel_framebuffer *fb, int color_plane,
+		       const struct fb_plane_view_dims *dims,
+		       int x, int y)
+{
+	unsigned int tiles;
+
+	if (is_surface_linear(&fb->base, color_plane)) {
+		tiles = plane_view_linear_tiles(fb, color_plane, dims, x, y);
+	} else {
+		tiles = plane_view_src_stride_tiles(fb, color_plane, dims) *
+			plane_view_height_tiles(fb, color_plane, dims, y);
+		/*
+		 * If the plane isn't horizontally tile aligned,
+		 * we need one more tile.
+		 */
+		if (x != 0)
+			tiles++;
+	}
+
+	return tiles;
+}
+
+static void intel_fb_view_init(struct drm_i915_private *i915, struct intel_fb_view *view,
+			       enum i915_gtt_view_type view_type)
+{
+	memset(view, 0, sizeof(*view));
+	view->gtt.type = view_type;
+
+	if (view_type == I915_GTT_VIEW_REMAPPED &&
+	    (IS_ALDERLAKE_P(i915) || DISPLAY_VER(i915) >= 14))
+		view->gtt.remapped.plane_alignment = SZ_2M / PAGE_SIZE;
+}
+
+bool intel_fb_supports_90_270_rotation(const struct intel_framebuffer *fb)
+{
+	if (DISPLAY_VER(to_i915(fb->base.dev)) >= 13)
+		return false;
+
+	return fb->base.modifier == I915_FORMAT_MOD_Y_TILED ||
+	       fb->base.modifier == I915_FORMAT_MOD_Yf_TILED;
+}
+
+int intel_fill_fb_info(struct drm_i915_private *i915, struct intel_framebuffer *fb)
+{
+	struct drm_i915_gem_object *obj = intel_fb_obj(&fb->base);
+	u32 gtt_offset_rotated = 0;
+	u32 gtt_offset_remapped = 0;
+	unsigned int max_size = 0;
+	int i, num_planes = fb->base.format->num_planes;
+	unsigned int tile_size = intel_tile_size(i915);
+
+	intel_fb_view_init(i915, &fb->normal_view, I915_GTT_VIEW_NORMAL);
+
+	drm_WARN_ON(&i915->drm,
+		    intel_fb_supports_90_270_rotation(fb) &&
+		    intel_fb_needs_pot_stride_remap(fb));
+
+	if (intel_fb_supports_90_270_rotation(fb))
+		intel_fb_view_init(i915, &fb->rotated_view, I915_GTT_VIEW_ROTATED);
+	if (intel_fb_needs_pot_stride_remap(fb))
+		intel_fb_view_init(i915, &fb->remapped_view, I915_GTT_VIEW_REMAPPED);
+
+	for (i = 0; i < num_planes; i++) {
+		struct fb_plane_view_dims view_dims;
+		unsigned int width, height;
+		unsigned int cpp, size;
+		u32 offset;
+		int x, y;
+		int ret;
+
+		/*
+		 * Plane 2 of Render Compression with Clear Color fb modifier
+		 * is consumed by the driver and not passed to DE. Skip the
+		 * arithmetic related to alignment and offset calculation.
+		 */
+		if (is_gen12_ccs_cc_plane(&fb->base, i)) {
+			if (IS_ALIGNED(fb->base.offsets[i], PAGE_SIZE))
+				continue;
+			else
+				return -EINVAL;
+		}
+
+		cpp = fb->base.format->cpp[i];
+		intel_fb_plane_dims(fb, i, &width, &height);
+
+		ret = convert_plane_offset_to_xy(fb, i, width, &x, &y);
+		if (ret)
+			return ret;
+
+		init_plane_view_dims(fb, i, width, height, &view_dims);
+
+		/*
+		 * First pixel of the framebuffer from
+		 * the start of the normal gtt mapping.
+		 */
+		fb->normal_view.color_plane[i].x = x;
+		fb->normal_view.color_plane[i].y = y;
+		fb->normal_view.color_plane[i].mapping_stride = fb->base.pitches[i];
+		fb->normal_view.color_plane[i].scanout_stride =
+			fb->normal_view.color_plane[i].mapping_stride;
+
+		offset = calc_plane_aligned_offset(fb, i, &x, &y);
+
+		if (intel_fb_supports_90_270_rotation(fb))
+			gtt_offset_rotated += calc_plane_remap_info(fb, i, &view_dims,
+								    offset, gtt_offset_rotated, x, y,
+								    &fb->rotated_view);
+
+		if (intel_fb_needs_pot_stride_remap(fb))
+			gtt_offset_remapped += calc_plane_remap_info(fb, i, &view_dims,
+								     offset, gtt_offset_remapped, x, y,
+								     &fb->remapped_view);
+
+		size = calc_plane_normal_size(fb, i, &view_dims, x, y);
+		/* how many tiles in total needed in the bo */
+		max_size = max(max_size, offset + size);
+	}
+
+	if (mul_u32_u32(max_size, tile_size) > obj->base.size) {
+		drm_dbg_kms(&i915->drm,
+			    "fb too big for bo (need %llu bytes, have %zu bytes)\n",
+			    mul_u32_u32(max_size, tile_size), obj->base.size);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static void intel_plane_remap_gtt(struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *i915 =
+		to_i915(plane_state->uapi.plane->dev);
+	struct drm_framebuffer *fb = plane_state->hw.fb;
+	struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
+	unsigned int rotation = plane_state->hw.rotation;
+	int i, num_planes = fb->format->num_planes;
+	unsigned int src_x, src_y;
+	unsigned int src_w, src_h;
+	u32 gtt_offset = 0;
+
+	intel_fb_view_init(i915, &plane_state->view,
+			   drm_rotation_90_or_270(rotation) ? I915_GTT_VIEW_ROTATED :
+							      I915_GTT_VIEW_REMAPPED);
+
+	src_x = plane_state->uapi.src.x1 >> 16;
+	src_y = plane_state->uapi.src.y1 >> 16;
+	src_w = drm_rect_width(&plane_state->uapi.src) >> 16;
+	src_h = drm_rect_height(&plane_state->uapi.src) >> 16;
+
+	drm_WARN_ON(&i915->drm, intel_fb_is_ccs_modifier(fb->modifier));
+
+	/* Make src coordinates relative to the viewport */
+	drm_rect_translate(&plane_state->uapi.src,
+			   -(src_x << 16), -(src_y << 16));
+
+	/* Rotate src coordinates to match rotated GTT view */
+	if (drm_rotation_90_or_270(rotation))
+		drm_rect_rotate(&plane_state->uapi.src,
+				src_w << 16, src_h << 16,
+				DRM_MODE_ROTATE_270);
+
+	for (i = 0; i < num_planes; i++) {
+		unsigned int hsub = i ? fb->format->hsub : 1;
+		unsigned int vsub = i ? fb->format->vsub : 1;
+		struct fb_plane_view_dims view_dims;
+		unsigned int width, height;
+		unsigned int x, y;
+		u32 offset;
+
+		x = src_x / hsub;
+		y = src_y / vsub;
+		width = src_w / hsub;
+		height = src_h / vsub;
+
+		init_plane_view_dims(intel_fb, i, width, height, &view_dims);
+
+		/*
+		 * First pixel of the src viewport from the
+		 * start of the normal gtt mapping.
+		 */
+		x += intel_fb->normal_view.color_plane[i].x;
+		y += intel_fb->normal_view.color_plane[i].y;
+
+		offset = calc_plane_aligned_offset(intel_fb, i, &x, &y);
+
+		gtt_offset += calc_plane_remap_info(intel_fb, i, &view_dims,
+						    offset, gtt_offset, x, y,
+						    &plane_state->view);
+	}
+}
+
+void intel_fb_fill_view(const struct intel_framebuffer *fb, unsigned int rotation,
+			struct intel_fb_view *view)
+{
+	if (drm_rotation_90_or_270(rotation))
+		*view = fb->rotated_view;
+	else if (intel_fb_needs_pot_stride_remap(fb))
+		*view = fb->remapped_view;
+	else
+		*view = fb->normal_view;
+}
+
+static
+u32 intel_fb_max_stride(struct drm_i915_private *dev_priv,
+			u32 pixel_format, u64 modifier)
+{
+	/*
+	 * Arbitrary limit for gen4+ chosen to match the
+	 * render engine max stride.
+	 *
+	 * The new CCS hash mode makes remapping impossible
+	 */
+	if (DISPLAY_VER(dev_priv) < 4 || intel_fb_is_ccs_modifier(modifier) ||
+	    intel_modifier_uses_dpt(dev_priv, modifier))
+		return intel_plane_fb_max_stride(dev_priv, pixel_format, modifier);
+	else if (DISPLAY_VER(dev_priv) >= 7)
+		return 256 * 1024;
+	else
+		return 128 * 1024;
+}
+
+static u32
+intel_fb_stride_alignment(const struct drm_framebuffer *fb, int color_plane)
+{
+	struct drm_i915_private *dev_priv = to_i915(fb->dev);
+	u32 tile_width;
+
+	if (is_surface_linear(fb, color_plane)) {
+		u32 max_stride = intel_plane_fb_max_stride(dev_priv,
+							   fb->format->format,
+							   fb->modifier);
+
+		/*
+		 * To make remapping with linear generally feasible
+		 * we need the stride to be page aligned.
+		 */
+		if (fb->pitches[color_plane] > max_stride &&
+		    !intel_fb_is_ccs_modifier(fb->modifier))
+			return intel_tile_size(dev_priv);
+		else
+			return 64;
+	}
+
+	tile_width = intel_tile_width_bytes(fb, color_plane);
+	if (intel_fb_is_ccs_modifier(fb->modifier)) {
+		/*
+		 * On TGL the surface stride must be 4 tile aligned, mapped by
+		 * one 64 byte cacheline on the CCS AUX surface.
+		 */
+		if (DISPLAY_VER(dev_priv) >= 12)
+			tile_width *= 4;
+		/*
+		 * Display WA #0531: skl,bxt,kbl,glk
+		 *
+		 * Render decompression and plane width > 3840
+		 * combined with horizontal panning requires the
+		 * plane stride to be a multiple of 4. We'll just
+		 * require the entire fb to accommodate that to avoid
+		 * potential runtime errors at plane configuration time.
+		 */
+		else if ((DISPLAY_VER(dev_priv) == 9 || IS_GEMINILAKE(dev_priv)) &&
+			 color_plane == 0 && fb->width > 3840)
+			tile_width *= 4;
+	}
+	return tile_width;
+}
+
+static int intel_plane_check_stride(const struct intel_plane_state *plane_state)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	unsigned int rotation = plane_state->hw.rotation;
+	u32 stride, max_stride;
+
+	/*
+	 * We ignore stride for all invisible planes that
+	 * can be remapped. Otherwise we could end up
+	 * with a false positive when the remapping didn't
+	 * kick in due the plane being invisible.
+	 */
+	if (intel_plane_can_remap(plane_state) &&
+	    !plane_state->uapi.visible)
+		return 0;
+
+	/* FIXME other color planes? */
+	stride = plane_state->view.color_plane[0].mapping_stride;
+	max_stride = plane->max_stride(plane, fb->format->format,
+				       fb->modifier, rotation);
+
+	if (stride > max_stride) {
+		DRM_DEBUG_KMS("[FB:%d] stride (%d) exceeds [PLANE:%d:%s] max stride (%d)\n",
+			      fb->base.id, stride,
+			      plane->base.base.id, plane->base.name, max_stride);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+int intel_plane_compute_gtt(struct intel_plane_state *plane_state)
+{
+	const struct intel_framebuffer *fb =
+		to_intel_framebuffer(plane_state->hw.fb);
+	unsigned int rotation = plane_state->hw.rotation;
+
+	if (!fb)
+		return 0;
+
+	if (intel_plane_needs_remap(plane_state)) {
+		intel_plane_remap_gtt(plane_state);
+
+		/*
+		 * Sometimes even remapping can't overcome
+		 * the stride limitations :( Can happen with
+		 * big plane sizes and suitably misaligned
+		 * offsets.
+		 */
+		return intel_plane_check_stride(plane_state);
+	}
+
+	intel_fb_fill_view(fb, rotation, &plane_state->view);
+
+	/* Rotate src coordinates to match rotated GTT view */
+	if (drm_rotation_90_or_270(rotation))
+		drm_rect_rotate(&plane_state->uapi.src,
+				fb->base.width << 16, fb->base.height << 16,
+				DRM_MODE_ROTATE_270);
+
+	return intel_plane_check_stride(plane_state);
+}
+
+static void intel_user_framebuffer_destroy(struct drm_framebuffer *fb)
+{
+	struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
+
+	drm_framebuffer_cleanup(fb);
+
+	if (intel_fb_uses_dpt(fb))
+		intel_dpt_destroy(intel_fb->dpt_vm);
+
+	intel_frontbuffer_put(intel_fb->frontbuffer);
+
+	kfree(intel_fb);
+}
+
+static int intel_user_framebuffer_create_handle(struct drm_framebuffer *fb,
+						struct drm_file *file,
+						unsigned int *handle)
+{
+	struct drm_i915_gem_object *obj = intel_fb_obj(fb);
+	struct drm_i915_private *i915 = to_i915(obj->base.dev);
+
+	if (i915_gem_object_is_userptr(obj)) {
+		drm_dbg(&i915->drm,
+			"attempting to use a userptr for a framebuffer, denied\n");
+		return -EINVAL;
+	}
+
+	return drm_gem_handle_create(file, &obj->base, handle);
+}
+
+static int intel_user_framebuffer_dirty(struct drm_framebuffer *fb,
+					struct drm_file *file,
+					unsigned int flags, unsigned int color,
+					struct drm_clip_rect *clips,
+					unsigned int num_clips)
+{
+	struct drm_i915_gem_object *obj = intel_fb_obj(fb);
+
+	i915_gem_object_flush_if_display(obj);
+	intel_frontbuffer_flush(to_intel_frontbuffer(fb), ORIGIN_DIRTYFB);
+
+	return 0;
+}
+
+static const struct drm_framebuffer_funcs intel_fb_funcs = {
+	.destroy = intel_user_framebuffer_destroy,
+	.create_handle = intel_user_framebuffer_create_handle,
+	.dirty = intel_user_framebuffer_dirty,
+};
+
+int intel_framebuffer_init(struct intel_framebuffer *intel_fb,
+			   struct drm_i915_gem_object *obj,
+			   struct drm_mode_fb_cmd2 *mode_cmd)
+{
+	struct drm_i915_private *dev_priv = to_i915(obj->base.dev);
+	struct drm_framebuffer *fb = &intel_fb->base;
+	u32 max_stride;
+	unsigned int tiling, stride;
+	int ret = -EINVAL;
+	int i;
+
+	intel_fb->frontbuffer = intel_frontbuffer_get(obj);
+	if (!intel_fb->frontbuffer)
+		return -ENOMEM;
+
+	i915_gem_object_lock(obj, NULL);
+	tiling = i915_gem_object_get_tiling(obj);
+	stride = i915_gem_object_get_stride(obj);
+	i915_gem_object_unlock(obj);
+
+	if (mode_cmd->flags & DRM_MODE_FB_MODIFIERS) {
+		/*
+		 * If there's a fence, enforce that
+		 * the fb modifier and tiling mode match.
+		 */
+		if (tiling != I915_TILING_NONE &&
+		    tiling != intel_fb_modifier_to_tiling(mode_cmd->modifier[0])) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "tiling_mode doesn't match fb modifier\n");
+			goto err;
+		}
+	} else {
+		if (tiling == I915_TILING_X) {
+			mode_cmd->modifier[0] = I915_FORMAT_MOD_X_TILED;
+		} else if (tiling == I915_TILING_Y) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "No Y tiling for legacy addfb\n");
+			goto err;
+		}
+	}
+
+	if (!drm_any_plane_has_format(&dev_priv->drm,
+				      mode_cmd->pixel_format,
+				      mode_cmd->modifier[0])) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "unsupported pixel format %p4cc / modifier 0x%llx\n",
+			    &mode_cmd->pixel_format, mode_cmd->modifier[0]);
+		goto err;
+	}
+
+	/*
+	 * gen2/3 display engine uses the fence if present,
+	 * so the tiling mode must match the fb modifier exactly.
+	 */
+	if (DISPLAY_VER(dev_priv) < 4 &&
+	    tiling != intel_fb_modifier_to_tiling(mode_cmd->modifier[0])) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "tiling_mode must match fb modifier exactly on gen2/3\n");
+		goto err;
+	}
+
+	max_stride = intel_fb_max_stride(dev_priv, mode_cmd->pixel_format,
+					 mode_cmd->modifier[0]);
+	if (mode_cmd->pitches[0] > max_stride) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "%s pitch (%u) must be at most %d\n",
+			    mode_cmd->modifier[0] != DRM_FORMAT_MOD_LINEAR ?
+			    "tiled" : "linear",
+			    mode_cmd->pitches[0], max_stride);
+		goto err;
+	}
+
+	/*
+	 * If there's a fence, enforce that
+	 * the fb pitch and fence stride match.
+	 */
+	if (tiling != I915_TILING_NONE && mode_cmd->pitches[0] != stride) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "pitch (%d) must match tiling stride (%d)\n",
+			    mode_cmd->pitches[0], stride);
+		goto err;
+	}
+
+	/* FIXME need to adjust LINOFF/TILEOFF accordingly. */
+	if (mode_cmd->offsets[0] != 0) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "plane 0 offset (0x%08x) must be 0\n",
+			    mode_cmd->offsets[0]);
+		goto err;
+	}
+
+	drm_helper_mode_fill_fb_struct(&dev_priv->drm, fb, mode_cmd);
+
+	for (i = 0; i < fb->format->num_planes; i++) {
+		u32 stride_alignment;
+
+		if (mode_cmd->handles[i] != mode_cmd->handles[0]) {
+			drm_dbg_kms(&dev_priv->drm, "bad plane %d handle\n",
+				    i);
+			goto err;
+		}
+
+		stride_alignment = intel_fb_stride_alignment(fb, i);
+		if (fb->pitches[i] & (stride_alignment - 1)) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "plane %d pitch (%d) must be at least %u byte aligned\n",
+				    i, fb->pitches[i], stride_alignment);
+			goto err;
+		}
+
+		if (intel_fb_is_gen12_ccs_aux_plane(fb, i)) {
+			int ccs_aux_stride = gen12_ccs_aux_stride(intel_fb, i);
+
+			if (fb->pitches[i] != ccs_aux_stride) {
+				drm_dbg_kms(&dev_priv->drm,
+					    "ccs aux plane %d pitch (%d) must be %d\n",
+					    i,
+					    fb->pitches[i], ccs_aux_stride);
+				goto err;
+			}
+		}
+
+		fb->obj[i] = &obj->base;
+	}
+
+	ret = intel_fill_fb_info(dev_priv, intel_fb);
+	if (ret)
+		goto err;
+
+	if (intel_fb_uses_dpt(fb)) {
+		struct i915_address_space *vm;
+
+		vm = intel_dpt_create(intel_fb);
+		if (IS_ERR(vm)) {
+			ret = PTR_ERR(vm);
+			goto err;
+		}
+
+		intel_fb->dpt_vm = vm;
+	}
+
+	ret = drm_framebuffer_init(&dev_priv->drm, fb, &intel_fb_funcs);
+	if (ret) {
+		drm_err(&dev_priv->drm, "framebuffer init failed %d\n", ret);
+		goto err;
+	}
+
+	return 0;
+
+err:
+	intel_frontbuffer_put(intel_fb->frontbuffer);
+	return ret;
+}
+
+struct drm_framebuffer *
+intel_user_framebuffer_create(struct drm_device *dev,
+			      struct drm_file *filp,
+			      const struct drm_mode_fb_cmd2 *user_mode_cmd)
+{
+	struct drm_framebuffer *fb;
+	struct drm_i915_gem_object *obj;
+	struct drm_mode_fb_cmd2 mode_cmd = *user_mode_cmd;
+	struct drm_i915_private *i915;
+
+	obj = i915_gem_object_lookup(filp, mode_cmd.handles[0]);
+	if (!obj)
+		return ERR_PTR(-ENOENT);
+
+	/* object is backed with LMEM for discrete */
+	i915 = to_i915(obj->base.dev);
+	if (HAS_LMEM(i915) && !i915_gem_object_can_migrate(obj, INTEL_REGION_LMEM_0)) {
+		/* object is "remote", not in local memory */
+		i915_gem_object_put(obj);
+		return ERR_PTR(-EREMOTE);
+	}
+
+	fb = intel_framebuffer_create(obj, &mode_cmd);
+	i915_gem_object_put(obj);
+
+	return fb;
+}
+
+struct drm_framebuffer *
+intel_framebuffer_create(struct drm_i915_gem_object *obj,
+			 struct drm_mode_fb_cmd2 *mode_cmd)
+{
+	struct intel_framebuffer *intel_fb;
+	int ret;
+
+	intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
+	if (!intel_fb)
+		return ERR_PTR(-ENOMEM);
+
+	ret = intel_framebuffer_init(intel_fb, obj, mode_cmd);
+	if (ret)
+		goto err;
+
+	return &intel_fb->base;
+
+err:
+	kfree(intel_fb);
+	return ERR_PTR(ret);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_fb.h b/drivers/gpu/drm/i915/display/intel_fb.h
new file mode 100644
index 000000000..12386f13a
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_fb.h
@@ -0,0 +1,96 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2020-2021 Intel Corporation
+ */
+
+#ifndef __INTEL_FB_H__
+#define __INTEL_FB_H__
+
+#include <linux/bits.h>
+#include <linux/types.h>
+
+struct drm_device;
+struct drm_file;
+struct drm_framebuffer;
+struct drm_i915_gem_object;
+struct drm_i915_private;
+struct drm_mode_fb_cmd2;
+struct intel_fb_view;
+struct intel_framebuffer;
+struct intel_plane;
+struct intel_plane_state;
+
+#define INTEL_PLANE_CAP_NONE		0
+#define INTEL_PLANE_CAP_CCS_RC		BIT(0)
+#define INTEL_PLANE_CAP_CCS_RC_CC	BIT(1)
+#define INTEL_PLANE_CAP_CCS_MC		BIT(2)
+#define INTEL_PLANE_CAP_TILING_X	BIT(3)
+#define INTEL_PLANE_CAP_TILING_Y	BIT(4)
+#define INTEL_PLANE_CAP_TILING_Yf	BIT(5)
+#define INTEL_PLANE_CAP_TILING_4	BIT(6)
+
+bool intel_fb_is_ccs_modifier(u64 modifier);
+bool intel_fb_is_rc_ccs_cc_modifier(u64 modifier);
+bool intel_fb_is_mc_ccs_modifier(u64 modifier);
+
+bool intel_fb_is_ccs_aux_plane(const struct drm_framebuffer *fb, int color_plane);
+int intel_fb_rc_ccs_cc_plane(const struct drm_framebuffer *fb);
+
+u64 *intel_fb_plane_get_modifiers(struct drm_i915_private *i915,
+				  u8 plane_caps);
+bool intel_fb_plane_supports_modifier(struct intel_plane *plane, u64 modifier);
+
+const struct drm_format_info *
+intel_fb_get_format_info(const struct drm_mode_fb_cmd2 *cmd);
+
+bool
+intel_format_info_is_yuv_semiplanar(const struct drm_format_info *info,
+				    u64 modifier);
+
+bool is_surface_linear(const struct drm_framebuffer *fb, int color_plane);
+
+int main_to_ccs_plane(const struct drm_framebuffer *fb, int main_plane);
+int skl_ccs_to_main_plane(const struct drm_framebuffer *fb, int ccs_plane);
+int skl_main_to_aux_plane(const struct drm_framebuffer *fb, int main_plane);
+
+unsigned int intel_tile_size(const struct drm_i915_private *i915);
+unsigned int intel_tile_width_bytes(const struct drm_framebuffer *fb, int color_plane);
+unsigned int intel_tile_height(const struct drm_framebuffer *fb, int color_plane);
+unsigned int intel_tile_row_size(const struct drm_framebuffer *fb, int color_plane);
+unsigned int intel_fb_align_height(const struct drm_framebuffer *fb,
+				   int color_plane, unsigned int height);
+unsigned int intel_cursor_alignment(const struct drm_i915_private *i915);
+unsigned int intel_surf_alignment(const struct drm_framebuffer *fb,
+				  int color_plane);
+
+void intel_fb_plane_get_subsampling(int *hsub, int *vsub,
+				    const struct drm_framebuffer *fb,
+				    int color_plane);
+
+u32 intel_plane_adjust_aligned_offset(int *x, int *y,
+				      const struct intel_plane_state *state,
+				      int color_plane,
+				      u32 old_offset, u32 new_offset);
+u32 intel_plane_compute_aligned_offset(int *x, int *y,
+				       const struct intel_plane_state *state,
+				       int color_plane);
+
+bool intel_fb_needs_pot_stride_remap(const struct intel_framebuffer *fb);
+bool intel_fb_supports_90_270_rotation(const struct intel_framebuffer *fb);
+
+int intel_fill_fb_info(struct drm_i915_private *i915, struct intel_framebuffer *fb);
+void intel_fb_fill_view(const struct intel_framebuffer *fb, unsigned int rotation,
+			struct intel_fb_view *view);
+int intel_plane_compute_gtt(struct intel_plane_state *plane_state);
+
+int intel_framebuffer_init(struct intel_framebuffer *ifb,
+			   struct drm_i915_gem_object *obj,
+			   struct drm_mode_fb_cmd2 *mode_cmd);
+struct drm_framebuffer *
+intel_user_framebuffer_create(struct drm_device *dev,
+			      struct drm_file *filp,
+			      const struct drm_mode_fb_cmd2 *user_mode_cmd);
+
+bool intel_fb_uses_dpt(const struct drm_framebuffer *fb);
+
+#endif /* __INTEL_FB_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_fb_pin.c b/drivers/gpu/drm/i915/display/intel_fb_pin.c
new file mode 100644
index 000000000..1dddd6abd
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_fb_pin.c
@@ -0,0 +1,303 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+/**
+ * DOC: display pinning helpers
+ */
+
+#include "gem/i915_gem_domain.h"
+#include "gem/i915_gem_object.h"
+
+#include "i915_drv.h"
+#include "intel_display_types.h"
+#include "intel_dpt.h"
+#include "intel_fb.h"
+#include "intel_fb_pin.h"
+
+static struct i915_vma *
+intel_pin_fb_obj_dpt(struct drm_framebuffer *fb,
+		     const struct i915_gtt_view *view,
+		     bool uses_fence,
+		     unsigned long *out_flags,
+		     struct i915_address_space *vm)
+{
+	struct drm_device *dev = fb->dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct drm_i915_gem_object *obj = intel_fb_obj(fb);
+	struct i915_gem_ww_ctx ww;
+	struct i915_vma *vma;
+	u32 alignment;
+	int ret;
+
+	/*
+	 * We are not syncing against the binding (and potential migrations)
+	 * below, so this vm must never be async.
+	 */
+	GEM_WARN_ON(vm->bind_async_flags);
+
+	if (WARN_ON(!i915_gem_object_is_framebuffer(obj)))
+		return ERR_PTR(-EINVAL);
+
+	alignment = 4096 * 512;
+
+	atomic_inc(&dev_priv->gpu_error.pending_fb_pin);
+
+	for_i915_gem_ww(&ww, ret, true) {
+		ret = i915_gem_object_lock(obj, &ww);
+		if (ret)
+			continue;
+
+		if (HAS_LMEM(dev_priv)) {
+			unsigned int flags = obj->flags;
+
+			/*
+			 * For this type of buffer we need to able to read from the CPU
+			 * the clear color value found in the buffer, hence we need to
+			 * ensure it is always in the mappable part of lmem, if this is
+			 * a small-bar device.
+			 */
+			if (intel_fb_rc_ccs_cc_plane(fb) >= 0)
+				flags &= ~I915_BO_ALLOC_GPU_ONLY;
+			ret = __i915_gem_object_migrate(obj, &ww, INTEL_REGION_LMEM_0,
+							flags);
+			if (ret)
+				continue;
+		}
+
+		ret = i915_gem_object_set_cache_level(obj, I915_CACHE_NONE);
+		if (ret)
+			continue;
+
+		vma = i915_vma_instance(obj, vm, view);
+		if (IS_ERR(vma)) {
+			ret = PTR_ERR(vma);
+			continue;
+		}
+
+		if (i915_vma_misplaced(vma, 0, alignment, 0)) {
+			ret = i915_vma_unbind(vma);
+			if (ret)
+				continue;
+		}
+
+		ret = i915_vma_pin_ww(vma, &ww, 0, alignment, PIN_GLOBAL);
+		if (ret)
+			continue;
+	}
+	if (ret) {
+		vma = ERR_PTR(ret);
+		goto err;
+	}
+
+	vma->display_alignment = max_t(u64, vma->display_alignment, alignment);
+
+	i915_gem_object_flush_if_display(obj);
+
+	i915_vma_get(vma);
+err:
+	atomic_dec(&dev_priv->gpu_error.pending_fb_pin);
+
+	return vma;
+}
+
+struct i915_vma *
+intel_pin_and_fence_fb_obj(struct drm_framebuffer *fb,
+			   bool phys_cursor,
+			   const struct i915_gtt_view *view,
+			   bool uses_fence,
+			   unsigned long *out_flags)
+{
+	struct drm_device *dev = fb->dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct drm_i915_gem_object *obj = intel_fb_obj(fb);
+	intel_wakeref_t wakeref;
+	struct i915_gem_ww_ctx ww;
+	struct i915_vma *vma;
+	unsigned int pinctl;
+	u32 alignment;
+	int ret;
+
+	if (drm_WARN_ON(dev, !i915_gem_object_is_framebuffer(obj)))
+		return ERR_PTR(-EINVAL);
+
+	if (phys_cursor)
+		alignment = intel_cursor_alignment(dev_priv);
+	else
+		alignment = intel_surf_alignment(fb, 0);
+	if (drm_WARN_ON(dev, alignment && !is_power_of_2(alignment)))
+		return ERR_PTR(-EINVAL);
+
+	/* Note that the w/a also requires 64 PTE of padding following the
+	 * bo. We currently fill all unused PTE with the shadow page and so
+	 * we should always have valid PTE following the scanout preventing
+	 * the VT-d warning.
+	 */
+	if (intel_scanout_needs_vtd_wa(dev_priv) && alignment < 256 * 1024)
+		alignment = 256 * 1024;
+
+	/*
+	 * Global gtt pte registers are special registers which actually forward
+	 * writes to a chunk of system memory. Which means that there is no risk
+	 * that the register values disappear as soon as we call
+	 * intel_runtime_pm_put(), so it is correct to wrap only the
+	 * pin/unpin/fence and not more.
+	 */
+	wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
+
+	atomic_inc(&dev_priv->gpu_error.pending_fb_pin);
+
+	/*
+	 * Valleyview is definitely limited to scanning out the first
+	 * 512MiB. Lets presume this behaviour was inherited from the
+	 * g4x display engine and that all earlier gen are similarly
+	 * limited. Testing suggests that it is a little more
+	 * complicated than this. For example, Cherryview appears quite
+	 * happy to scanout from anywhere within its global aperture.
+	 */
+	pinctl = 0;
+	if (HAS_GMCH(dev_priv))
+		pinctl |= PIN_MAPPABLE;
+
+	i915_gem_ww_ctx_init(&ww, true);
+retry:
+	ret = i915_gem_object_lock(obj, &ww);
+	if (!ret && phys_cursor)
+		ret = i915_gem_object_attach_phys(obj, alignment);
+	else if (!ret && HAS_LMEM(dev_priv))
+		ret = i915_gem_object_migrate(obj, &ww, INTEL_REGION_LMEM_0);
+	/* TODO: Do we need to sync when migration becomes async? */
+	if (!ret)
+		ret = i915_gem_object_pin_pages(obj);
+	if (ret)
+		goto err;
+
+	vma = i915_gem_object_pin_to_display_plane(obj, &ww, alignment,
+						   view, pinctl);
+	if (IS_ERR(vma)) {
+		ret = PTR_ERR(vma);
+		goto err_unpin;
+	}
+
+	if (uses_fence && i915_vma_is_map_and_fenceable(vma)) {
+		/*
+		 * Install a fence for tiled scan-out. Pre-i965 always needs a
+		 * fence, whereas 965+ only requires a fence if using
+		 * framebuffer compression.  For simplicity, we always, when
+		 * possible, install a fence as the cost is not that onerous.
+		 *
+		 * If we fail to fence the tiled scanout, then either the
+		 * modeset will reject the change (which is highly unlikely as
+		 * the affected systems, all but one, do not have unmappable
+		 * space) or we will not be able to enable full powersaving
+		 * techniques (also likely not to apply due to various limits
+		 * FBC and the like impose on the size of the buffer, which
+		 * presumably we violated anyway with this unmappable buffer).
+		 * Anyway, it is presumably better to stumble onwards with
+		 * something and try to run the system in a "less than optimal"
+		 * mode that matches the user configuration.
+		 */
+		ret = i915_vma_pin_fence(vma);
+		if (ret != 0 && DISPLAY_VER(dev_priv) < 4) {
+			i915_vma_unpin(vma);
+			goto err_unpin;
+		}
+		ret = 0;
+
+		if (vma->fence)
+			*out_flags |= PLANE_HAS_FENCE;
+	}
+
+	i915_vma_get(vma);
+
+err_unpin:
+	i915_gem_object_unpin_pages(obj);
+err:
+	if (ret == -EDEADLK) {
+		ret = i915_gem_ww_ctx_backoff(&ww);
+		if (!ret)
+			goto retry;
+	}
+	i915_gem_ww_ctx_fini(&ww);
+	if (ret)
+		vma = ERR_PTR(ret);
+
+	atomic_dec(&dev_priv->gpu_error.pending_fb_pin);
+	intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
+	return vma;
+}
+
+void intel_unpin_fb_vma(struct i915_vma *vma, unsigned long flags)
+{
+	if (flags & PLANE_HAS_FENCE)
+		i915_vma_unpin_fence(vma);
+	i915_vma_unpin(vma);
+	i915_vma_put(vma);
+}
+
+int intel_plane_pin_fb(struct intel_plane_state *plane_state)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	struct drm_framebuffer *fb = plane_state->hw.fb;
+	struct i915_vma *vma;
+	bool phys_cursor =
+		plane->id == PLANE_CURSOR &&
+		INTEL_INFO(dev_priv)->display.cursor_needs_physical;
+
+	if (!intel_fb_uses_dpt(fb)) {
+		vma = intel_pin_and_fence_fb_obj(fb, phys_cursor,
+						 &plane_state->view.gtt,
+						 intel_plane_uses_fence(plane_state),
+						 &plane_state->flags);
+		if (IS_ERR(vma))
+			return PTR_ERR(vma);
+
+		plane_state->ggtt_vma = vma;
+	} else {
+		struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
+
+		vma = intel_dpt_pin(intel_fb->dpt_vm);
+		if (IS_ERR(vma))
+			return PTR_ERR(vma);
+
+		plane_state->ggtt_vma = vma;
+
+		vma = intel_pin_fb_obj_dpt(fb, &plane_state->view.gtt, false,
+					   &plane_state->flags, intel_fb->dpt_vm);
+		if (IS_ERR(vma)) {
+			intel_dpt_unpin(intel_fb->dpt_vm);
+			plane_state->ggtt_vma = NULL;
+			return PTR_ERR(vma);
+		}
+
+		plane_state->dpt_vma = vma;
+
+		WARN_ON(plane_state->ggtt_vma == plane_state->dpt_vma);
+	}
+
+	return 0;
+}
+
+void intel_plane_unpin_fb(struct intel_plane_state *old_plane_state)
+{
+	struct drm_framebuffer *fb = old_plane_state->hw.fb;
+	struct i915_vma *vma;
+
+	if (!intel_fb_uses_dpt(fb)) {
+		vma = fetch_and_zero(&old_plane_state->ggtt_vma);
+		if (vma)
+			intel_unpin_fb_vma(vma, old_plane_state->flags);
+	} else {
+		struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
+
+		vma = fetch_and_zero(&old_plane_state->dpt_vma);
+		if (vma)
+			intel_unpin_fb_vma(vma, old_plane_state->flags);
+
+		vma = fetch_and_zero(&old_plane_state->ggtt_vma);
+		if (vma)
+			intel_dpt_unpin(intel_fb->dpt_vm);
+	}
+}
diff --git a/drivers/gpu/drm/i915/display/intel_fb_pin.h b/drivers/gpu/drm/i915/display/intel_fb_pin.h
new file mode 100644
index 000000000..de0efaa25
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_fb_pin.h
@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#ifndef __INTEL_FB_PIN_H__
+#define __INTEL_FB_PIN_H__
+
+#include <linux/types.h>
+
+struct drm_framebuffer;
+struct i915_vma;
+struct intel_plane_state;
+struct i915_gtt_view;
+
+struct i915_vma *
+intel_pin_and_fence_fb_obj(struct drm_framebuffer *fb,
+			   bool phys_cursor,
+			   const struct i915_gtt_view *view,
+			   bool uses_fence,
+			   unsigned long *out_flags);
+
+void intel_unpin_fb_vma(struct i915_vma *vma, unsigned long flags);
+
+int intel_plane_pin_fb(struct intel_plane_state *plane_state);
+void intel_plane_unpin_fb(struct intel_plane_state *old_plane_state);
+
+#endif
diff --git a/drivers/gpu/drm/i915/display/intel_fbc.c b/drivers/gpu/drm/i915/display/intel_fbc.c
new file mode 100644
index 000000000..f38175304
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_fbc.c
@@ -0,0 +1,1846 @@
+/*
+ * Copyright © 2014 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * DOC: Frame Buffer Compression (FBC)
+ *
+ * FBC tries to save memory bandwidth (and so power consumption) by
+ * compressing the amount of memory used by the display. It is total
+ * transparent to user space and completely handled in the kernel.
+ *
+ * The benefits of FBC are mostly visible with solid backgrounds and
+ * variation-less patterns. It comes from keeping the memory footprint small
+ * and having fewer memory pages opened and accessed for refreshing the display.
+ *
+ * i915 is responsible to reserve stolen memory for FBC and configure its
+ * offset on proper registers. The hardware takes care of all
+ * compress/decompress. However there are many known cases where we have to
+ * forcibly disable it to allow proper screen updates.
+ */
+
+#include <linux/string_helpers.h>
+
+#include <drm/drm_blend.h>
+#include <drm/drm_fourcc.h>
+
+#include "i915_drv.h"
+#include "i915_utils.h"
+#include "i915_vgpu.h"
+#include "intel_cdclk.h"
+#include "intel_de.h"
+#include "intel_display_trace.h"
+#include "intel_display_types.h"
+#include "intel_fbc.h"
+#include "intel_frontbuffer.h"
+
+#define for_each_fbc_id(__dev_priv, __fbc_id) \
+	for ((__fbc_id) = INTEL_FBC_A; (__fbc_id) < I915_MAX_FBCS; (__fbc_id)++) \
+		for_each_if(RUNTIME_INFO(__dev_priv)->fbc_mask & BIT(__fbc_id))
+
+#define for_each_intel_fbc(__dev_priv, __fbc, __fbc_id) \
+	for_each_fbc_id((__dev_priv), (__fbc_id)) \
+		for_each_if((__fbc) = (__dev_priv)->display.fbc[(__fbc_id)])
+
+struct intel_fbc_funcs {
+	void (*activate)(struct intel_fbc *fbc);
+	void (*deactivate)(struct intel_fbc *fbc);
+	bool (*is_active)(struct intel_fbc *fbc);
+	bool (*is_compressing)(struct intel_fbc *fbc);
+	void (*nuke)(struct intel_fbc *fbc);
+	void (*program_cfb)(struct intel_fbc *fbc);
+	void (*set_false_color)(struct intel_fbc *fbc, bool enable);
+};
+
+struct intel_fbc_state {
+	struct intel_plane *plane;
+	unsigned int cfb_stride;
+	unsigned int cfb_size;
+	unsigned int fence_y_offset;
+	u16 override_cfb_stride;
+	u16 interval;
+	s8 fence_id;
+};
+
+struct intel_fbc {
+	struct drm_i915_private *i915;
+	const struct intel_fbc_funcs *funcs;
+
+	/*
+	 * This is always the inner lock when overlapping with
+	 * struct_mutex and it's the outer lock when overlapping
+	 * with stolen_lock.
+	 */
+	struct mutex lock;
+	unsigned int busy_bits;
+
+	struct drm_mm_node compressed_fb;
+	struct drm_mm_node compressed_llb;
+
+	enum intel_fbc_id id;
+
+	u8 limit;
+
+	bool false_color;
+
+	bool active;
+	bool activated;
+	bool flip_pending;
+
+	bool underrun_detected;
+	struct work_struct underrun_work;
+
+	/*
+	 * This structure contains everything that's relevant to program the
+	 * hardware registers. When we want to figure out if we need to disable
+	 * and re-enable FBC for a new configuration we just check if there's
+	 * something different in the struct. The genx_fbc_activate functions
+	 * are supposed to read from it in order to program the registers.
+	 */
+	struct intel_fbc_state state;
+	const char *no_fbc_reason;
+};
+
+/* plane stride in pixels */
+static unsigned int intel_fbc_plane_stride(const struct intel_plane_state *plane_state)
+{
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	unsigned int stride;
+
+	stride = plane_state->view.color_plane[0].mapping_stride;
+	if (!drm_rotation_90_or_270(plane_state->hw.rotation))
+		stride /= fb->format->cpp[0];
+
+	return stride;
+}
+
+/* plane stride based cfb stride in bytes, assuming 1:1 compression limit */
+static unsigned int _intel_fbc_cfb_stride(const struct intel_plane_state *plane_state)
+{
+	unsigned int cpp = 4; /* FBC always 4 bytes per pixel */
+
+	return intel_fbc_plane_stride(plane_state) * cpp;
+}
+
+/* minimum acceptable cfb stride in bytes, assuming 1:1 compression limit */
+static unsigned int skl_fbc_min_cfb_stride(const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *i915 = to_i915(plane_state->uapi.plane->dev);
+	unsigned int limit = 4; /* 1:4 compression limit is the worst case */
+	unsigned int cpp = 4; /* FBC always 4 bytes per pixel */
+	unsigned int width = drm_rect_width(&plane_state->uapi.src) >> 16;
+	unsigned int height = 4; /* FBC segment is 4 lines */
+	unsigned int stride;
+
+	/* minimum segment stride we can use */
+	stride = width * cpp * height / limit;
+
+	/*
+	 * Wa_16011863758: icl+
+	 * Avoid some hardware segment address miscalculation.
+	 */
+	if (DISPLAY_VER(i915) >= 11)
+		stride += 64;
+
+	/*
+	 * At least some of the platforms require each 4 line segment to
+	 * be 512 byte aligned. Just do it always for simplicity.
+	 */
+	stride = ALIGN(stride, 512);
+
+	/* convert back to single line equivalent with 1:1 compression limit */
+	return stride * limit / height;
+}
+
+/* properly aligned cfb stride in bytes, assuming 1:1 compression limit */
+static unsigned int intel_fbc_cfb_stride(const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *i915 = to_i915(plane_state->uapi.plane->dev);
+	unsigned int stride = _intel_fbc_cfb_stride(plane_state);
+
+	/*
+	 * At least some of the platforms require each 4 line segment to
+	 * be 512 byte aligned. Aligning each line to 512 bytes guarantees
+	 * that regardless of the compression limit we choose later.
+	 */
+	if (DISPLAY_VER(i915) >= 9)
+		return max(ALIGN(stride, 512), skl_fbc_min_cfb_stride(plane_state));
+	else
+		return stride;
+}
+
+static unsigned int intel_fbc_cfb_size(const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *i915 = to_i915(plane_state->uapi.plane->dev);
+	int lines = drm_rect_height(&plane_state->uapi.src) >> 16;
+
+	if (DISPLAY_VER(i915) == 7)
+		lines = min(lines, 2048);
+	else if (DISPLAY_VER(i915) >= 8)
+		lines = min(lines, 2560);
+
+	return lines * intel_fbc_cfb_stride(plane_state);
+}
+
+static u16 intel_fbc_override_cfb_stride(const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *i915 = to_i915(plane_state->uapi.plane->dev);
+	unsigned int stride_aligned = intel_fbc_cfb_stride(plane_state);
+	unsigned int stride = _intel_fbc_cfb_stride(plane_state);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+
+	/*
+	 * Override stride in 64 byte units per 4 line segment.
+	 *
+	 * Gen9 hw miscalculates cfb stride for linear as
+	 * PLANE_STRIDE*512 instead of PLANE_STRIDE*64, so
+	 * we always need to use the override there.
+	 */
+	if (stride != stride_aligned ||
+	    (DISPLAY_VER(i915) == 9 && fb->modifier == DRM_FORMAT_MOD_LINEAR))
+		return stride_aligned * 4 / 64;
+
+	return 0;
+}
+
+static u32 i8xx_fbc_ctl(struct intel_fbc *fbc)
+{
+	const struct intel_fbc_state *fbc_state = &fbc->state;
+	struct drm_i915_private *i915 = fbc->i915;
+	unsigned int cfb_stride;
+	u32 fbc_ctl;
+
+	cfb_stride = fbc_state->cfb_stride / fbc->limit;
+
+	/* FBC_CTL wants 32B or 64B units */
+	if (DISPLAY_VER(i915) == 2)
+		cfb_stride = (cfb_stride / 32) - 1;
+	else
+		cfb_stride = (cfb_stride / 64) - 1;
+
+	fbc_ctl = FBC_CTL_PERIODIC |
+		FBC_CTL_INTERVAL(fbc_state->interval) |
+		FBC_CTL_STRIDE(cfb_stride);
+
+	if (IS_I945GM(i915))
+		fbc_ctl |= FBC_CTL_C3_IDLE; /* 945 needs special SR handling */
+
+	if (fbc_state->fence_id >= 0)
+		fbc_ctl |= FBC_CTL_FENCENO(fbc_state->fence_id);
+
+	return fbc_ctl;
+}
+
+static u32 i965_fbc_ctl2(struct intel_fbc *fbc)
+{
+	const struct intel_fbc_state *fbc_state = &fbc->state;
+	u32 fbc_ctl2;
+
+	fbc_ctl2 = FBC_CTL_FENCE_DBL | FBC_CTL_IDLE_IMM |
+		FBC_CTL_PLANE(fbc_state->plane->i9xx_plane);
+
+	if (fbc_state->fence_id >= 0)
+		fbc_ctl2 |= FBC_CTL_CPU_FENCE_EN;
+
+	return fbc_ctl2;
+}
+
+static void i8xx_fbc_deactivate(struct intel_fbc *fbc)
+{
+	struct drm_i915_private *i915 = fbc->i915;
+	u32 fbc_ctl;
+
+	/* Disable compression */
+	fbc_ctl = intel_de_read(i915, FBC_CONTROL);
+	if ((fbc_ctl & FBC_CTL_EN) == 0)
+		return;
+
+	fbc_ctl &= ~FBC_CTL_EN;
+	intel_de_write(i915, FBC_CONTROL, fbc_ctl);
+
+	/* Wait for compressing bit to clear */
+	if (intel_de_wait_for_clear(i915, FBC_STATUS,
+				    FBC_STAT_COMPRESSING, 10)) {
+		drm_dbg_kms(&i915->drm, "FBC idle timed out\n");
+		return;
+	}
+}
+
+static void i8xx_fbc_activate(struct intel_fbc *fbc)
+{
+	const struct intel_fbc_state *fbc_state = &fbc->state;
+	struct drm_i915_private *i915 = fbc->i915;
+	int i;
+
+	/* Clear old tags */
+	for (i = 0; i < (FBC_LL_SIZE / 32) + 1; i++)
+		intel_de_write(i915, FBC_TAG(i), 0);
+
+	if (DISPLAY_VER(i915) == 4) {
+		intel_de_write(i915, FBC_CONTROL2,
+			       i965_fbc_ctl2(fbc));
+		intel_de_write(i915, FBC_FENCE_OFF,
+			       fbc_state->fence_y_offset);
+	}
+
+	intel_de_write(i915, FBC_CONTROL,
+		       FBC_CTL_EN | i8xx_fbc_ctl(fbc));
+}
+
+static bool i8xx_fbc_is_active(struct intel_fbc *fbc)
+{
+	return intel_de_read(fbc->i915, FBC_CONTROL) & FBC_CTL_EN;
+}
+
+static bool i8xx_fbc_is_compressing(struct intel_fbc *fbc)
+{
+	return intel_de_read(fbc->i915, FBC_STATUS) &
+		(FBC_STAT_COMPRESSING | FBC_STAT_COMPRESSED);
+}
+
+static void i8xx_fbc_nuke(struct intel_fbc *fbc)
+{
+	struct intel_fbc_state *fbc_state = &fbc->state;
+	enum i9xx_plane_id i9xx_plane = fbc_state->plane->i9xx_plane;
+	struct drm_i915_private *dev_priv = fbc->i915;
+
+	spin_lock_irq(&dev_priv->uncore.lock);
+	intel_de_write_fw(dev_priv, DSPADDR(i9xx_plane),
+			  intel_de_read_fw(dev_priv, DSPADDR(i9xx_plane)));
+	spin_unlock_irq(&dev_priv->uncore.lock);
+}
+
+static void i8xx_fbc_program_cfb(struct intel_fbc *fbc)
+{
+	struct drm_i915_private *i915 = fbc->i915;
+
+	GEM_BUG_ON(range_overflows_end_t(u64, i915->dsm.start,
+					 fbc->compressed_fb.start, U32_MAX));
+	GEM_BUG_ON(range_overflows_end_t(u64, i915->dsm.start,
+					 fbc->compressed_llb.start, U32_MAX));
+
+	intel_de_write(i915, FBC_CFB_BASE,
+		       i915->dsm.start + fbc->compressed_fb.start);
+	intel_de_write(i915, FBC_LL_BASE,
+		       i915->dsm.start + fbc->compressed_llb.start);
+}
+
+static const struct intel_fbc_funcs i8xx_fbc_funcs = {
+	.activate = i8xx_fbc_activate,
+	.deactivate = i8xx_fbc_deactivate,
+	.is_active = i8xx_fbc_is_active,
+	.is_compressing = i8xx_fbc_is_compressing,
+	.nuke = i8xx_fbc_nuke,
+	.program_cfb = i8xx_fbc_program_cfb,
+};
+
+static void i965_fbc_nuke(struct intel_fbc *fbc)
+{
+	struct intel_fbc_state *fbc_state = &fbc->state;
+	enum i9xx_plane_id i9xx_plane = fbc_state->plane->i9xx_plane;
+	struct drm_i915_private *dev_priv = fbc->i915;
+
+	spin_lock_irq(&dev_priv->uncore.lock);
+	intel_de_write_fw(dev_priv, DSPSURF(i9xx_plane),
+			  intel_de_read_fw(dev_priv, DSPSURF(i9xx_plane)));
+	spin_unlock_irq(&dev_priv->uncore.lock);
+}
+
+static const struct intel_fbc_funcs i965_fbc_funcs = {
+	.activate = i8xx_fbc_activate,
+	.deactivate = i8xx_fbc_deactivate,
+	.is_active = i8xx_fbc_is_active,
+	.is_compressing = i8xx_fbc_is_compressing,
+	.nuke = i965_fbc_nuke,
+	.program_cfb = i8xx_fbc_program_cfb,
+};
+
+static u32 g4x_dpfc_ctl_limit(struct intel_fbc *fbc)
+{
+	switch (fbc->limit) {
+	default:
+		MISSING_CASE(fbc->limit);
+		fallthrough;
+	case 1:
+		return DPFC_CTL_LIMIT_1X;
+	case 2:
+		return DPFC_CTL_LIMIT_2X;
+	case 4:
+		return DPFC_CTL_LIMIT_4X;
+	}
+}
+
+static u32 g4x_dpfc_ctl(struct intel_fbc *fbc)
+{
+	const struct intel_fbc_state *fbc_state = &fbc->state;
+	struct drm_i915_private *i915 = fbc->i915;
+	u32 dpfc_ctl;
+
+	dpfc_ctl = g4x_dpfc_ctl_limit(fbc) |
+		DPFC_CTL_PLANE_G4X(fbc_state->plane->i9xx_plane);
+
+	if (IS_G4X(i915))
+		dpfc_ctl |= DPFC_CTL_SR_EN;
+
+	if (fbc_state->fence_id >= 0) {
+		dpfc_ctl |= DPFC_CTL_FENCE_EN_G4X;
+
+		if (DISPLAY_VER(i915) < 6)
+			dpfc_ctl |= DPFC_CTL_FENCENO(fbc_state->fence_id);
+	}
+
+	return dpfc_ctl;
+}
+
+static void g4x_fbc_activate(struct intel_fbc *fbc)
+{
+	const struct intel_fbc_state *fbc_state = &fbc->state;
+	struct drm_i915_private *i915 = fbc->i915;
+
+	intel_de_write(i915, DPFC_FENCE_YOFF,
+		       fbc_state->fence_y_offset);
+
+	intel_de_write(i915, DPFC_CONTROL,
+		       DPFC_CTL_EN | g4x_dpfc_ctl(fbc));
+}
+
+static void g4x_fbc_deactivate(struct intel_fbc *fbc)
+{
+	struct drm_i915_private *i915 = fbc->i915;
+	u32 dpfc_ctl;
+
+	/* Disable compression */
+	dpfc_ctl = intel_de_read(i915, DPFC_CONTROL);
+	if (dpfc_ctl & DPFC_CTL_EN) {
+		dpfc_ctl &= ~DPFC_CTL_EN;
+		intel_de_write(i915, DPFC_CONTROL, dpfc_ctl);
+	}
+}
+
+static bool g4x_fbc_is_active(struct intel_fbc *fbc)
+{
+	return intel_de_read(fbc->i915, DPFC_CONTROL) & DPFC_CTL_EN;
+}
+
+static bool g4x_fbc_is_compressing(struct intel_fbc *fbc)
+{
+	return intel_de_read(fbc->i915, DPFC_STATUS) & DPFC_COMP_SEG_MASK;
+}
+
+static void g4x_fbc_program_cfb(struct intel_fbc *fbc)
+{
+	struct drm_i915_private *i915 = fbc->i915;
+
+	intel_de_write(i915, DPFC_CB_BASE, fbc->compressed_fb.start);
+}
+
+static const struct intel_fbc_funcs g4x_fbc_funcs = {
+	.activate = g4x_fbc_activate,
+	.deactivate = g4x_fbc_deactivate,
+	.is_active = g4x_fbc_is_active,
+	.is_compressing = g4x_fbc_is_compressing,
+	.nuke = i965_fbc_nuke,
+	.program_cfb = g4x_fbc_program_cfb,
+};
+
+static void ilk_fbc_activate(struct intel_fbc *fbc)
+{
+	struct intel_fbc_state *fbc_state = &fbc->state;
+	struct drm_i915_private *i915 = fbc->i915;
+
+	intel_de_write(i915, ILK_DPFC_FENCE_YOFF(fbc->id),
+		       fbc_state->fence_y_offset);
+
+	intel_de_write(i915, ILK_DPFC_CONTROL(fbc->id),
+		       DPFC_CTL_EN | g4x_dpfc_ctl(fbc));
+}
+
+static void ilk_fbc_deactivate(struct intel_fbc *fbc)
+{
+	struct drm_i915_private *i915 = fbc->i915;
+	u32 dpfc_ctl;
+
+	/* Disable compression */
+	dpfc_ctl = intel_de_read(i915, ILK_DPFC_CONTROL(fbc->id));
+	if (dpfc_ctl & DPFC_CTL_EN) {
+		dpfc_ctl &= ~DPFC_CTL_EN;
+		intel_de_write(i915, ILK_DPFC_CONTROL(fbc->id), dpfc_ctl);
+	}
+}
+
+static bool ilk_fbc_is_active(struct intel_fbc *fbc)
+{
+	return intel_de_read(fbc->i915, ILK_DPFC_CONTROL(fbc->id)) & DPFC_CTL_EN;
+}
+
+static bool ilk_fbc_is_compressing(struct intel_fbc *fbc)
+{
+	return intel_de_read(fbc->i915, ILK_DPFC_STATUS(fbc->id)) & DPFC_COMP_SEG_MASK;
+}
+
+static void ilk_fbc_program_cfb(struct intel_fbc *fbc)
+{
+	struct drm_i915_private *i915 = fbc->i915;
+
+	intel_de_write(i915, ILK_DPFC_CB_BASE(fbc->id), fbc->compressed_fb.start);
+}
+
+static const struct intel_fbc_funcs ilk_fbc_funcs = {
+	.activate = ilk_fbc_activate,
+	.deactivate = ilk_fbc_deactivate,
+	.is_active = ilk_fbc_is_active,
+	.is_compressing = ilk_fbc_is_compressing,
+	.nuke = i965_fbc_nuke,
+	.program_cfb = ilk_fbc_program_cfb,
+};
+
+static void snb_fbc_program_fence(struct intel_fbc *fbc)
+{
+	const struct intel_fbc_state *fbc_state = &fbc->state;
+	struct drm_i915_private *i915 = fbc->i915;
+	u32 ctl = 0;
+
+	if (fbc_state->fence_id >= 0)
+		ctl = SNB_DPFC_FENCE_EN | SNB_DPFC_FENCENO(fbc_state->fence_id);
+
+	intel_de_write(i915, SNB_DPFC_CTL_SA, ctl);
+	intel_de_write(i915, SNB_DPFC_CPU_FENCE_OFFSET, fbc_state->fence_y_offset);
+}
+
+static void snb_fbc_activate(struct intel_fbc *fbc)
+{
+	snb_fbc_program_fence(fbc);
+
+	ilk_fbc_activate(fbc);
+}
+
+static void snb_fbc_nuke(struct intel_fbc *fbc)
+{
+	struct drm_i915_private *i915 = fbc->i915;
+
+	intel_de_write(i915, MSG_FBC_REND_STATE(fbc->id), FBC_REND_NUKE);
+	intel_de_posting_read(i915, MSG_FBC_REND_STATE(fbc->id));
+}
+
+static const struct intel_fbc_funcs snb_fbc_funcs = {
+	.activate = snb_fbc_activate,
+	.deactivate = ilk_fbc_deactivate,
+	.is_active = ilk_fbc_is_active,
+	.is_compressing = ilk_fbc_is_compressing,
+	.nuke = snb_fbc_nuke,
+	.program_cfb = ilk_fbc_program_cfb,
+};
+
+static void glk_fbc_program_cfb_stride(struct intel_fbc *fbc)
+{
+	const struct intel_fbc_state *fbc_state = &fbc->state;
+	struct drm_i915_private *i915 = fbc->i915;
+	u32 val = 0;
+
+	if (fbc_state->override_cfb_stride)
+		val |= FBC_STRIDE_OVERRIDE |
+			FBC_STRIDE(fbc_state->override_cfb_stride / fbc->limit);
+
+	intel_de_write(i915, GLK_FBC_STRIDE(fbc->id), val);
+}
+
+static void skl_fbc_program_cfb_stride(struct intel_fbc *fbc)
+{
+	const struct intel_fbc_state *fbc_state = &fbc->state;
+	struct drm_i915_private *i915 = fbc->i915;
+	u32 val = 0;
+
+	/* Display WA #0529: skl, kbl, bxt. */
+	if (fbc_state->override_cfb_stride)
+		val |= CHICKEN_FBC_STRIDE_OVERRIDE |
+			CHICKEN_FBC_STRIDE(fbc_state->override_cfb_stride / fbc->limit);
+
+	intel_de_rmw(i915, CHICKEN_MISC_4,
+		     CHICKEN_FBC_STRIDE_OVERRIDE |
+		     CHICKEN_FBC_STRIDE_MASK, val);
+}
+
+static u32 ivb_dpfc_ctl(struct intel_fbc *fbc)
+{
+	const struct intel_fbc_state *fbc_state = &fbc->state;
+	struct drm_i915_private *i915 = fbc->i915;
+	u32 dpfc_ctl;
+
+	dpfc_ctl = g4x_dpfc_ctl_limit(fbc);
+
+	if (IS_IVYBRIDGE(i915))
+		dpfc_ctl |= DPFC_CTL_PLANE_IVB(fbc_state->plane->i9xx_plane);
+
+	if (fbc_state->fence_id >= 0)
+		dpfc_ctl |= DPFC_CTL_FENCE_EN_IVB;
+
+	if (fbc->false_color)
+		dpfc_ctl |= DPFC_CTL_FALSE_COLOR;
+
+	return dpfc_ctl;
+}
+
+static void ivb_fbc_activate(struct intel_fbc *fbc)
+{
+	struct drm_i915_private *i915 = fbc->i915;
+
+	if (DISPLAY_VER(i915) >= 10)
+		glk_fbc_program_cfb_stride(fbc);
+	else if (DISPLAY_VER(i915) == 9)
+		skl_fbc_program_cfb_stride(fbc);
+
+	if (to_gt(i915)->ggtt->num_fences)
+		snb_fbc_program_fence(fbc);
+
+	intel_de_write(i915, ILK_DPFC_CONTROL(fbc->id),
+		       DPFC_CTL_EN | ivb_dpfc_ctl(fbc));
+}
+
+static bool ivb_fbc_is_compressing(struct intel_fbc *fbc)
+{
+	return intel_de_read(fbc->i915, ILK_DPFC_STATUS2(fbc->id)) & DPFC_COMP_SEG_MASK_IVB;
+}
+
+static void ivb_fbc_set_false_color(struct intel_fbc *fbc,
+				    bool enable)
+{
+	intel_de_rmw(fbc->i915, ILK_DPFC_CONTROL(fbc->id),
+		     DPFC_CTL_FALSE_COLOR, enable ? DPFC_CTL_FALSE_COLOR : 0);
+}
+
+static const struct intel_fbc_funcs ivb_fbc_funcs = {
+	.activate = ivb_fbc_activate,
+	.deactivate = ilk_fbc_deactivate,
+	.is_active = ilk_fbc_is_active,
+	.is_compressing = ivb_fbc_is_compressing,
+	.nuke = snb_fbc_nuke,
+	.program_cfb = ilk_fbc_program_cfb,
+	.set_false_color = ivb_fbc_set_false_color,
+};
+
+static bool intel_fbc_hw_is_active(struct intel_fbc *fbc)
+{
+	return fbc->funcs->is_active(fbc);
+}
+
+static void intel_fbc_hw_activate(struct intel_fbc *fbc)
+{
+	trace_intel_fbc_activate(fbc->state.plane);
+
+	fbc->active = true;
+	fbc->activated = true;
+
+	fbc->funcs->activate(fbc);
+}
+
+static void intel_fbc_hw_deactivate(struct intel_fbc *fbc)
+{
+	trace_intel_fbc_deactivate(fbc->state.plane);
+
+	fbc->active = false;
+
+	fbc->funcs->deactivate(fbc);
+}
+
+static bool intel_fbc_is_compressing(struct intel_fbc *fbc)
+{
+	return fbc->funcs->is_compressing(fbc);
+}
+
+static void intel_fbc_nuke(struct intel_fbc *fbc)
+{
+	struct drm_i915_private *i915 = fbc->i915;
+
+	drm_WARN_ON(&i915->drm, fbc->flip_pending);
+
+	trace_intel_fbc_nuke(fbc->state.plane);
+
+	fbc->funcs->nuke(fbc);
+}
+
+static void intel_fbc_activate(struct intel_fbc *fbc)
+{
+	intel_fbc_hw_activate(fbc);
+	intel_fbc_nuke(fbc);
+
+	fbc->no_fbc_reason = NULL;
+}
+
+static void intel_fbc_deactivate(struct intel_fbc *fbc, const char *reason)
+{
+	struct drm_i915_private *i915 = fbc->i915;
+
+	drm_WARN_ON(&i915->drm, !mutex_is_locked(&fbc->lock));
+
+	if (fbc->active)
+		intel_fbc_hw_deactivate(fbc);
+
+	fbc->no_fbc_reason = reason;
+}
+
+static u64 intel_fbc_cfb_base_max(struct drm_i915_private *i915)
+{
+	if (DISPLAY_VER(i915) >= 5 || IS_G4X(i915))
+		return BIT_ULL(28);
+	else
+		return BIT_ULL(32);
+}
+
+static u64 intel_fbc_stolen_end(struct drm_i915_private *i915)
+{
+	u64 end;
+
+	/* The FBC hardware for BDW/SKL doesn't have access to the stolen
+	 * reserved range size, so it always assumes the maximum (8mb) is used.
+	 * If we enable FBC using a CFB on that memory range we'll get FIFO
+	 * underruns, even if that range is not reserved by the BIOS. */
+	if (IS_BROADWELL(i915) ||
+	    (DISPLAY_VER(i915) == 9 && !IS_BROXTON(i915)))
+		end = resource_size(&i915->dsm) - 8 * 1024 * 1024;
+	else
+		end = U64_MAX;
+
+	return min(end, intel_fbc_cfb_base_max(i915));
+}
+
+static int intel_fbc_min_limit(const struct intel_plane_state *plane_state)
+{
+	return plane_state->hw.fb->format->cpp[0] == 2 ? 2 : 1;
+}
+
+static int intel_fbc_max_limit(struct drm_i915_private *i915)
+{
+	/* WaFbcOnly1to1Ratio:ctg */
+	if (IS_G4X(i915))
+		return 1;
+
+	/*
+	 * FBC2 can only do 1:1, 1:2, 1:4, we limit
+	 * FBC1 to the same out of convenience.
+	 */
+	return 4;
+}
+
+static int find_compression_limit(struct intel_fbc *fbc,
+				  unsigned int size, int min_limit)
+{
+	struct drm_i915_private *i915 = fbc->i915;
+	u64 end = intel_fbc_stolen_end(i915);
+	int ret, limit = min_limit;
+
+	size /= limit;
+
+	/* Try to over-allocate to reduce reallocations and fragmentation. */
+	ret = i915_gem_stolen_insert_node_in_range(i915, &fbc->compressed_fb,
+						   size <<= 1, 4096, 0, end);
+	if (ret == 0)
+		return limit;
+
+	for (; limit <= intel_fbc_max_limit(i915); limit <<= 1) {
+		ret = i915_gem_stolen_insert_node_in_range(i915, &fbc->compressed_fb,
+							   size >>= 1, 4096, 0, end);
+		if (ret == 0)
+			return limit;
+	}
+
+	return 0;
+}
+
+static int intel_fbc_alloc_cfb(struct intel_fbc *fbc,
+			       unsigned int size, int min_limit)
+{
+	struct drm_i915_private *i915 = fbc->i915;
+	int ret;
+
+	drm_WARN_ON(&i915->drm,
+		    drm_mm_node_allocated(&fbc->compressed_fb));
+	drm_WARN_ON(&i915->drm,
+		    drm_mm_node_allocated(&fbc->compressed_llb));
+
+	if (DISPLAY_VER(i915) < 5 && !IS_G4X(i915)) {
+		ret = i915_gem_stolen_insert_node(i915, &fbc->compressed_llb,
+						  4096, 4096);
+		if (ret)
+			goto err;
+	}
+
+	ret = find_compression_limit(fbc, size, min_limit);
+	if (!ret)
+		goto err_llb;
+	else if (ret > min_limit)
+		drm_info_once(&i915->drm,
+			      "Reducing the compressed framebuffer size. This may lead to less power savings than a non-reduced-size. Try to increase stolen memory size if available in BIOS.\n");
+
+	fbc->limit = ret;
+
+	drm_dbg_kms(&i915->drm,
+		    "reserved %llu bytes of contiguous stolen space for FBC, limit: %d\n",
+		    fbc->compressed_fb.size, fbc->limit);
+
+	return 0;
+
+err_llb:
+	if (drm_mm_node_allocated(&fbc->compressed_llb))
+		i915_gem_stolen_remove_node(i915, &fbc->compressed_llb);
+err:
+	if (drm_mm_initialized(&i915->mm.stolen))
+		drm_info_once(&i915->drm, "not enough stolen space for compressed buffer (need %d more bytes), disabling. Hint: you may be able to increase stolen memory size in the BIOS to avoid this.\n", size);
+	return -ENOSPC;
+}
+
+static void intel_fbc_program_cfb(struct intel_fbc *fbc)
+{
+	fbc->funcs->program_cfb(fbc);
+}
+
+static void intel_fbc_program_workarounds(struct intel_fbc *fbc)
+{
+	/* Wa_22014263786:icl,jsl,tgl,dg1,rkl,adls,adlp */
+	if (DISPLAY_VER(fbc->i915) >= 11 && !IS_DG2(fbc->i915))
+		intel_de_rmw(fbc->i915, ILK_DPFC_CHICKEN(fbc->id), 0,
+			     DPFC_CHICKEN_FORCE_SLB_INVALIDATION);
+}
+
+static void __intel_fbc_cleanup_cfb(struct intel_fbc *fbc)
+{
+	struct drm_i915_private *i915 = fbc->i915;
+
+	if (WARN_ON(intel_fbc_hw_is_active(fbc)))
+		return;
+
+	if (drm_mm_node_allocated(&fbc->compressed_llb))
+		i915_gem_stolen_remove_node(i915, &fbc->compressed_llb);
+	if (drm_mm_node_allocated(&fbc->compressed_fb))
+		i915_gem_stolen_remove_node(i915, &fbc->compressed_fb);
+}
+
+void intel_fbc_cleanup(struct drm_i915_private *i915)
+{
+	struct intel_fbc *fbc;
+	enum intel_fbc_id fbc_id;
+
+	for_each_intel_fbc(i915, fbc, fbc_id) {
+		mutex_lock(&fbc->lock);
+		__intel_fbc_cleanup_cfb(fbc);
+		mutex_unlock(&fbc->lock);
+
+		kfree(fbc);
+	}
+}
+
+static bool stride_is_valid(const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *i915 = to_i915(plane_state->uapi.plane->dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	unsigned int stride = intel_fbc_plane_stride(plane_state) *
+		fb->format->cpp[0];
+
+	/* This should have been caught earlier. */
+	if (drm_WARN_ON_ONCE(&i915->drm, (stride & (64 - 1)) != 0))
+		return false;
+
+	/* Below are the additional FBC restrictions. */
+	if (stride < 512)
+		return false;
+
+	if (DISPLAY_VER(i915) == 2 || DISPLAY_VER(i915) == 3)
+		return stride == 4096 || stride == 8192;
+
+	if (DISPLAY_VER(i915) == 4 && !IS_G4X(i915) && stride < 2048)
+		return false;
+
+	/* Display WA #1105: skl,bxt,kbl,cfl,glk */
+	if ((DISPLAY_VER(i915) == 9 || IS_GEMINILAKE(i915)) &&
+	    fb->modifier == DRM_FORMAT_MOD_LINEAR && stride & 511)
+		return false;
+
+	if (stride > 16384)
+		return false;
+
+	return true;
+}
+
+static bool pixel_format_is_valid(const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *i915 = to_i915(plane_state->uapi.plane->dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+
+	switch (fb->format->format) {
+	case DRM_FORMAT_XRGB8888:
+	case DRM_FORMAT_XBGR8888:
+		return true;
+	case DRM_FORMAT_XRGB1555:
+	case DRM_FORMAT_RGB565:
+		/* 16bpp not supported on gen2 */
+		if (DISPLAY_VER(i915) == 2)
+			return false;
+		/* WaFbcOnly1to1Ratio:ctg */
+		if (IS_G4X(i915))
+			return false;
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool rotation_is_valid(const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *i915 = to_i915(plane_state->uapi.plane->dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	unsigned int rotation = plane_state->hw.rotation;
+
+	if (DISPLAY_VER(i915) >= 9 && fb->format->format == DRM_FORMAT_RGB565 &&
+	    drm_rotation_90_or_270(rotation))
+		return false;
+	else if (DISPLAY_VER(i915) <= 4 && !IS_G4X(i915) &&
+		 rotation != DRM_MODE_ROTATE_0)
+		return false;
+
+	return true;
+}
+
+/*
+ * For some reason, the hardware tracking starts looking at whatever we
+ * programmed as the display plane base address register. It does not look at
+ * the X and Y offset registers. That's why we include the src x/y offsets
+ * instead of just looking at the plane size.
+ */
+static bool intel_fbc_hw_tracking_covers_screen(const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *i915 = to_i915(plane_state->uapi.plane->dev);
+	unsigned int effective_w, effective_h, max_w, max_h;
+
+	if (DISPLAY_VER(i915) >= 10) {
+		max_w = 5120;
+		max_h = 4096;
+	} else if (DISPLAY_VER(i915) >= 8 || IS_HASWELL(i915)) {
+		max_w = 4096;
+		max_h = 4096;
+	} else if (IS_G4X(i915) || DISPLAY_VER(i915) >= 5) {
+		max_w = 4096;
+		max_h = 2048;
+	} else {
+		max_w = 2048;
+		max_h = 1536;
+	}
+
+	effective_w = plane_state->view.color_plane[0].x +
+		(drm_rect_width(&plane_state->uapi.src) >> 16);
+	effective_h = plane_state->view.color_plane[0].y +
+		(drm_rect_height(&plane_state->uapi.src) >> 16);
+
+	return effective_w <= max_w && effective_h <= max_h;
+}
+
+static bool tiling_is_valid(const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *i915 = to_i915(plane_state->uapi.plane->dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+
+	switch (fb->modifier) {
+	case DRM_FORMAT_MOD_LINEAR:
+	case I915_FORMAT_MOD_Y_TILED:
+	case I915_FORMAT_MOD_Yf_TILED:
+		return DISPLAY_VER(i915) >= 9;
+	case I915_FORMAT_MOD_4_TILED:
+	case I915_FORMAT_MOD_X_TILED:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static void intel_fbc_update_state(struct intel_atomic_state *state,
+				   struct intel_crtc *crtc,
+				   struct intel_plane *plane)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	const struct intel_plane_state *plane_state =
+		intel_atomic_get_new_plane_state(state, plane);
+	struct intel_fbc *fbc = plane->fbc;
+	struct intel_fbc_state *fbc_state = &fbc->state;
+
+	WARN_ON(plane_state->no_fbc_reason);
+	WARN_ON(fbc_state->plane && fbc_state->plane != plane);
+
+	fbc_state->plane = plane;
+
+	/* FBC1 compression interval: arbitrary choice of 1 second */
+	fbc_state->interval = drm_mode_vrefresh(&crtc_state->hw.adjusted_mode);
+
+	fbc_state->fence_y_offset = intel_plane_fence_y_offset(plane_state);
+
+	drm_WARN_ON(&i915->drm, plane_state->flags & PLANE_HAS_FENCE &&
+		    !plane_state->ggtt_vma->fence);
+
+	if (plane_state->flags & PLANE_HAS_FENCE &&
+	    plane_state->ggtt_vma->fence)
+		fbc_state->fence_id = plane_state->ggtt_vma->fence->id;
+	else
+		fbc_state->fence_id = -1;
+
+	fbc_state->cfb_stride = intel_fbc_cfb_stride(plane_state);
+	fbc_state->cfb_size = intel_fbc_cfb_size(plane_state);
+	fbc_state->override_cfb_stride = intel_fbc_override_cfb_stride(plane_state);
+}
+
+static bool intel_fbc_is_fence_ok(const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *i915 = to_i915(plane_state->uapi.plane->dev);
+
+	/* The use of a CPU fence is one of two ways to detect writes by the
+	 * CPU to the scanout and trigger updates to the FBC.
+	 *
+	 * The other method is by software tracking (see
+	 * intel_fbc_invalidate/flush()), it will manually notify FBC and nuke
+	 * the current compressed buffer and recompress it.
+	 *
+	 * Note that is possible for a tiled surface to be unmappable (and
+	 * so have no fence associated with it) due to aperture constraints
+	 * at the time of pinning.
+	 *
+	 * FIXME with 90/270 degree rotation we should use the fence on
+	 * the normal GTT view (the rotated view doesn't even have a
+	 * fence). Would need changes to the FBC fence Y offset as well.
+	 * For now this will effectively disable FBC with 90/270 degree
+	 * rotation.
+	 */
+	return DISPLAY_VER(i915) >= 9 ||
+		(plane_state->flags & PLANE_HAS_FENCE &&
+		 plane_state->ggtt_vma->fence);
+}
+
+static bool intel_fbc_is_cfb_ok(const struct intel_plane_state *plane_state)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	struct intel_fbc *fbc = plane->fbc;
+
+	return intel_fbc_min_limit(plane_state) <= fbc->limit &&
+		intel_fbc_cfb_size(plane_state) <= fbc->compressed_fb.size * fbc->limit;
+}
+
+static bool intel_fbc_is_ok(const struct intel_plane_state *plane_state)
+{
+	return !plane_state->no_fbc_reason &&
+		intel_fbc_is_fence_ok(plane_state) &&
+		intel_fbc_is_cfb_ok(plane_state);
+}
+
+static int intel_fbc_check_plane(struct intel_atomic_state *state,
+				 struct intel_plane *plane)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	struct intel_plane_state *plane_state =
+		intel_atomic_get_new_plane_state(state, plane);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	struct intel_crtc *crtc = to_intel_crtc(plane_state->hw.crtc);
+	const struct intel_crtc_state *crtc_state;
+	struct intel_fbc *fbc = plane->fbc;
+
+	if (!fbc)
+		return 0;
+
+	if (intel_vgpu_active(i915)) {
+		plane_state->no_fbc_reason = "VGPU active";
+		return 0;
+	}
+
+	if (!i915->params.enable_fbc) {
+		plane_state->no_fbc_reason = "disabled per module param or by default";
+		return 0;
+	}
+
+	if (!plane_state->uapi.visible) {
+		plane_state->no_fbc_reason = "plane not visible";
+		return 0;
+	}
+
+	crtc_state = intel_atomic_get_new_crtc_state(state, crtc);
+
+	if (crtc_state->hw.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE) {
+		plane_state->no_fbc_reason = "interlaced mode not supported";
+		return 0;
+	}
+
+	if (crtc_state->double_wide) {
+		plane_state->no_fbc_reason = "double wide pipe not supported";
+		return 0;
+	}
+
+	/*
+	 * Display 12+ is not supporting FBC with PSR2.
+	 * Recommendation is to keep this combination disabled
+	 * Bspec: 50422 HSD: 14010260002
+	 */
+	if (DISPLAY_VER(i915) >= 12 && crtc_state->has_psr2) {
+		plane_state->no_fbc_reason = "PSR2 enabled";
+		return 0;
+	}
+
+	/* Wa_14016291713 */
+	if (IS_DISPLAY_VER(i915, 12, 13) && crtc_state->has_psr) {
+		plane_state->no_fbc_reason = "PSR1 enabled (Wa_14016291713)";
+		return 0;
+	}
+
+	if (!pixel_format_is_valid(plane_state)) {
+		plane_state->no_fbc_reason = "pixel format not supported";
+		return 0;
+	}
+
+	if (!tiling_is_valid(plane_state)) {
+		plane_state->no_fbc_reason = "tiling not supported";
+		return 0;
+	}
+
+	if (!rotation_is_valid(plane_state)) {
+		plane_state->no_fbc_reason = "rotation not supported";
+		return 0;
+	}
+
+	if (!stride_is_valid(plane_state)) {
+		plane_state->no_fbc_reason = "stride not supported";
+		return 0;
+	}
+
+	if (plane_state->hw.pixel_blend_mode != DRM_MODE_BLEND_PIXEL_NONE &&
+	    fb->format->has_alpha) {
+		plane_state->no_fbc_reason = "per-pixel alpha not supported";
+		return 0;
+	}
+
+	if (!intel_fbc_hw_tracking_covers_screen(plane_state)) {
+		plane_state->no_fbc_reason = "plane size too big";
+		return 0;
+	}
+
+	/*
+	 * Work around a problem on GEN9+ HW, where enabling FBC on a plane
+	 * having a Y offset that isn't divisible by 4 causes FIFO underrun
+	 * and screen flicker.
+	 */
+	if (DISPLAY_VER(i915) >= 9 &&
+	    plane_state->view.color_plane[0].y & 3) {
+		plane_state->no_fbc_reason = "plane start Y offset misaligned";
+		return 0;
+	}
+
+	/* Wa_22010751166: icl, ehl, tgl, dg1, rkl */
+	if (DISPLAY_VER(i915) >= 11 &&
+	    (plane_state->view.color_plane[0].y +
+	     (drm_rect_height(&plane_state->uapi.src) >> 16)) & 3) {
+		plane_state->no_fbc_reason = "plane end Y offset misaligned";
+		return 0;
+	}
+
+	/* WaFbcExceedCdClockThreshold:hsw,bdw */
+	if (IS_HASWELL(i915) || IS_BROADWELL(i915)) {
+		const struct intel_cdclk_state *cdclk_state;
+
+		cdclk_state = intel_atomic_get_cdclk_state(state);
+		if (IS_ERR(cdclk_state))
+			return PTR_ERR(cdclk_state);
+
+		if (crtc_state->pixel_rate >= cdclk_state->logical.cdclk * 95 / 100) {
+			plane_state->no_fbc_reason = "pixel rate too high";
+			return 0;
+		}
+	}
+
+	plane_state->no_fbc_reason = NULL;
+
+	return 0;
+}
+
+
+static bool intel_fbc_can_flip_nuke(struct intel_atomic_state *state,
+				    struct intel_crtc *crtc,
+				    struct intel_plane *plane)
+{
+	const struct intel_crtc_state *new_crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	const struct intel_plane_state *old_plane_state =
+		intel_atomic_get_old_plane_state(state, plane);
+	const struct intel_plane_state *new_plane_state =
+		intel_atomic_get_new_plane_state(state, plane);
+	const struct drm_framebuffer *old_fb = old_plane_state->hw.fb;
+	const struct drm_framebuffer *new_fb = new_plane_state->hw.fb;
+
+	if (drm_atomic_crtc_needs_modeset(&new_crtc_state->uapi))
+		return false;
+
+	if (!intel_fbc_is_ok(old_plane_state) ||
+	    !intel_fbc_is_ok(new_plane_state))
+		return false;
+
+	if (old_fb->format->format != new_fb->format->format)
+		return false;
+
+	if (old_fb->modifier != new_fb->modifier)
+		return false;
+
+	if (intel_fbc_plane_stride(old_plane_state) !=
+	    intel_fbc_plane_stride(new_plane_state))
+		return false;
+
+	if (intel_fbc_cfb_stride(old_plane_state) !=
+	    intel_fbc_cfb_stride(new_plane_state))
+		return false;
+
+	if (intel_fbc_cfb_size(old_plane_state) !=
+	    intel_fbc_cfb_size(new_plane_state))
+		return false;
+
+	if (intel_fbc_override_cfb_stride(old_plane_state) !=
+	    intel_fbc_override_cfb_stride(new_plane_state))
+		return false;
+
+	return true;
+}
+
+static bool __intel_fbc_pre_update(struct intel_atomic_state *state,
+				   struct intel_crtc *crtc,
+				   struct intel_plane *plane)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	struct intel_fbc *fbc = plane->fbc;
+	bool need_vblank_wait = false;
+
+	fbc->flip_pending = true;
+
+	if (intel_fbc_can_flip_nuke(state, crtc, plane))
+		return need_vblank_wait;
+
+	intel_fbc_deactivate(fbc, "update pending");
+
+	/*
+	 * Display WA #1198: glk+
+	 * Need an extra vblank wait between FBC disable and most plane
+	 * updates. Bspec says this is only needed for plane disable, but
+	 * that is not true. Touching most plane registers will cause the
+	 * corruption to appear. Also SKL/derivatives do not seem to be
+	 * affected.
+	 *
+	 * TODO: could optimize this a bit by sampling the frame
+	 * counter when we disable FBC (if it was already done earlier)
+	 * and skipping the extra vblank wait before the plane update
+	 * if at least one frame has already passed.
+	 */
+	if (fbc->activated && DISPLAY_VER(i915) >= 10)
+		need_vblank_wait = true;
+	fbc->activated = false;
+
+	return need_vblank_wait;
+}
+
+bool intel_fbc_pre_update(struct intel_atomic_state *state,
+			  struct intel_crtc *crtc)
+{
+	const struct intel_plane_state *plane_state;
+	bool need_vblank_wait = false;
+	struct intel_plane *plane;
+	int i;
+
+	for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
+		struct intel_fbc *fbc = plane->fbc;
+
+		if (!fbc || plane->pipe != crtc->pipe)
+			continue;
+
+		mutex_lock(&fbc->lock);
+
+		if (fbc->state.plane == plane)
+			need_vblank_wait |= __intel_fbc_pre_update(state, crtc, plane);
+
+		mutex_unlock(&fbc->lock);
+	}
+
+	return need_vblank_wait;
+}
+
+static void __intel_fbc_disable(struct intel_fbc *fbc)
+{
+	struct drm_i915_private *i915 = fbc->i915;
+	struct intel_plane *plane = fbc->state.plane;
+
+	drm_WARN_ON(&i915->drm, !mutex_is_locked(&fbc->lock));
+	drm_WARN_ON(&i915->drm, fbc->active);
+
+	drm_dbg_kms(&i915->drm, "Disabling FBC on [PLANE:%d:%s]\n",
+		    plane->base.base.id, plane->base.name);
+
+	__intel_fbc_cleanup_cfb(fbc);
+
+	fbc->state.plane = NULL;
+	fbc->flip_pending = false;
+	fbc->busy_bits = 0;
+}
+
+static void __intel_fbc_post_update(struct intel_fbc *fbc)
+{
+	struct drm_i915_private *i915 = fbc->i915;
+
+	drm_WARN_ON(&i915->drm, !mutex_is_locked(&fbc->lock));
+
+	if (!fbc->busy_bits)
+		intel_fbc_activate(fbc);
+	else
+		intel_fbc_deactivate(fbc, "frontbuffer write");
+}
+
+void intel_fbc_post_update(struct intel_atomic_state *state,
+			   struct intel_crtc *crtc)
+{
+	const struct intel_plane_state *plane_state;
+	struct intel_plane *plane;
+	int i;
+
+	for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
+		struct intel_fbc *fbc = plane->fbc;
+
+		if (!fbc || plane->pipe != crtc->pipe)
+			continue;
+
+		mutex_lock(&fbc->lock);
+
+		if (fbc->state.plane == plane) {
+			fbc->flip_pending = false;
+			__intel_fbc_post_update(fbc);
+		}
+
+		mutex_unlock(&fbc->lock);
+	}
+}
+
+static unsigned int intel_fbc_get_frontbuffer_bit(struct intel_fbc *fbc)
+{
+	if (fbc->state.plane)
+		return fbc->state.plane->frontbuffer_bit;
+	else
+		return 0;
+}
+
+static void __intel_fbc_invalidate(struct intel_fbc *fbc,
+				   unsigned int frontbuffer_bits,
+				   enum fb_op_origin origin)
+{
+	if (origin == ORIGIN_FLIP || origin == ORIGIN_CURSOR_UPDATE)
+		return;
+
+	mutex_lock(&fbc->lock);
+
+	frontbuffer_bits &= intel_fbc_get_frontbuffer_bit(fbc);
+	if (!frontbuffer_bits)
+		goto out;
+
+	fbc->busy_bits |= frontbuffer_bits;
+	intel_fbc_deactivate(fbc, "frontbuffer write");
+
+out:
+	mutex_unlock(&fbc->lock);
+}
+
+void intel_fbc_invalidate(struct drm_i915_private *i915,
+			  unsigned int frontbuffer_bits,
+			  enum fb_op_origin origin)
+{
+	struct intel_fbc *fbc;
+	enum intel_fbc_id fbc_id;
+
+	for_each_intel_fbc(i915, fbc, fbc_id)
+		__intel_fbc_invalidate(fbc, frontbuffer_bits, origin);
+
+}
+
+static void __intel_fbc_flush(struct intel_fbc *fbc,
+			      unsigned int frontbuffer_bits,
+			      enum fb_op_origin origin)
+{
+	mutex_lock(&fbc->lock);
+
+	frontbuffer_bits &= intel_fbc_get_frontbuffer_bit(fbc);
+	if (!frontbuffer_bits)
+		goto out;
+
+	fbc->busy_bits &= ~frontbuffer_bits;
+
+	if (origin == ORIGIN_FLIP || origin == ORIGIN_CURSOR_UPDATE)
+		goto out;
+
+	if (fbc->busy_bits || fbc->flip_pending)
+		goto out;
+
+	if (fbc->active)
+		intel_fbc_nuke(fbc);
+	else
+		intel_fbc_activate(fbc);
+
+out:
+	mutex_unlock(&fbc->lock);
+}
+
+void intel_fbc_flush(struct drm_i915_private *i915,
+		     unsigned int frontbuffer_bits,
+		     enum fb_op_origin origin)
+{
+	struct intel_fbc *fbc;
+	enum intel_fbc_id fbc_id;
+
+	for_each_intel_fbc(i915, fbc, fbc_id)
+		__intel_fbc_flush(fbc, frontbuffer_bits, origin);
+}
+
+int intel_fbc_atomic_check(struct intel_atomic_state *state)
+{
+	struct intel_plane_state *plane_state;
+	struct intel_plane *plane;
+	int i;
+
+	for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
+		int ret;
+
+		ret = intel_fbc_check_plane(state, plane);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static void __intel_fbc_enable(struct intel_atomic_state *state,
+			       struct intel_crtc *crtc,
+			       struct intel_plane *plane)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_plane_state *plane_state =
+		intel_atomic_get_new_plane_state(state, plane);
+	struct intel_fbc *fbc = plane->fbc;
+
+	if (fbc->state.plane) {
+		if (fbc->state.plane != plane)
+			return;
+
+		if (intel_fbc_is_ok(plane_state)) {
+			intel_fbc_update_state(state, crtc, plane);
+			return;
+		}
+
+		__intel_fbc_disable(fbc);
+	}
+
+	drm_WARN_ON(&i915->drm, fbc->active);
+
+	fbc->no_fbc_reason = plane_state->no_fbc_reason;
+	if (fbc->no_fbc_reason)
+		return;
+
+	if (!intel_fbc_is_fence_ok(plane_state)) {
+		fbc->no_fbc_reason = "framebuffer not fenced";
+		return;
+	}
+
+	if (fbc->underrun_detected) {
+		fbc->no_fbc_reason = "FIFO underrun";
+		return;
+	}
+
+	if (intel_fbc_alloc_cfb(fbc, intel_fbc_cfb_size(plane_state),
+				intel_fbc_min_limit(plane_state))) {
+		fbc->no_fbc_reason = "not enough stolen memory";
+		return;
+	}
+
+	drm_dbg_kms(&i915->drm, "Enabling FBC on [PLANE:%d:%s]\n",
+		    plane->base.base.id, plane->base.name);
+	fbc->no_fbc_reason = "FBC enabled but not active yet\n";
+
+	intel_fbc_update_state(state, crtc, plane);
+
+	intel_fbc_program_workarounds(fbc);
+	intel_fbc_program_cfb(fbc);
+}
+
+/**
+ * intel_fbc_disable - disable FBC if it's associated with crtc
+ * @crtc: the CRTC
+ *
+ * This function disables FBC if it's associated with the provided CRTC.
+ */
+void intel_fbc_disable(struct intel_crtc *crtc)
+{
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	struct intel_plane *plane;
+
+	for_each_intel_plane(&i915->drm, plane) {
+		struct intel_fbc *fbc = plane->fbc;
+
+		if (!fbc || plane->pipe != crtc->pipe)
+			continue;
+
+		mutex_lock(&fbc->lock);
+		if (fbc->state.plane == plane)
+			__intel_fbc_disable(fbc);
+		mutex_unlock(&fbc->lock);
+	}
+}
+
+void intel_fbc_update(struct intel_atomic_state *state,
+		      struct intel_crtc *crtc)
+{
+	const struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	const struct intel_plane_state *plane_state;
+	struct intel_plane *plane;
+	int i;
+
+	for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
+		struct intel_fbc *fbc = plane->fbc;
+
+		if (!fbc || plane->pipe != crtc->pipe)
+			continue;
+
+		mutex_lock(&fbc->lock);
+
+		if (crtc_state->update_pipe && plane_state->no_fbc_reason) {
+			if (fbc->state.plane == plane)
+				__intel_fbc_disable(fbc);
+		} else {
+			__intel_fbc_enable(state, crtc, plane);
+		}
+
+		mutex_unlock(&fbc->lock);
+	}
+}
+
+static void intel_fbc_underrun_work_fn(struct work_struct *work)
+{
+	struct intel_fbc *fbc = container_of(work, typeof(*fbc), underrun_work);
+	struct drm_i915_private *i915 = fbc->i915;
+
+	mutex_lock(&fbc->lock);
+
+	/* Maybe we were scheduled twice. */
+	if (fbc->underrun_detected || !fbc->state.plane)
+		goto out;
+
+	drm_dbg_kms(&i915->drm, "Disabling FBC due to FIFO underrun.\n");
+	fbc->underrun_detected = true;
+
+	intel_fbc_deactivate(fbc, "FIFO underrun");
+	if (!fbc->flip_pending)
+		intel_crtc_wait_for_next_vblank(intel_crtc_for_pipe(i915, fbc->state.plane->pipe));
+	__intel_fbc_disable(fbc);
+out:
+	mutex_unlock(&fbc->lock);
+}
+
+static void __intel_fbc_reset_underrun(struct intel_fbc *fbc)
+{
+	struct drm_i915_private *i915 = fbc->i915;
+
+	cancel_work_sync(&fbc->underrun_work);
+
+	mutex_lock(&fbc->lock);
+
+	if (fbc->underrun_detected) {
+		drm_dbg_kms(&i915->drm,
+			    "Re-allowing FBC after fifo underrun\n");
+		fbc->no_fbc_reason = "FIFO underrun cleared";
+	}
+
+	fbc->underrun_detected = false;
+	mutex_unlock(&fbc->lock);
+}
+
+/*
+ * intel_fbc_reset_underrun - reset FBC fifo underrun status.
+ * @i915: the i915 device
+ *
+ * See intel_fbc_handle_fifo_underrun_irq(). For automated testing we
+ * want to re-enable FBC after an underrun to increase test coverage.
+ */
+void intel_fbc_reset_underrun(struct drm_i915_private *i915)
+{
+	struct intel_fbc *fbc;
+	enum intel_fbc_id fbc_id;
+
+	for_each_intel_fbc(i915, fbc, fbc_id)
+		__intel_fbc_reset_underrun(fbc);
+}
+
+static void __intel_fbc_handle_fifo_underrun_irq(struct intel_fbc *fbc)
+{
+	/*
+	 * There's no guarantee that underrun_detected won't be set to true
+	 * right after this check and before the work is scheduled, but that's
+	 * not a problem since we'll check it again under the work function
+	 * while FBC is locked. This check here is just to prevent us from
+	 * unnecessarily scheduling the work, and it relies on the fact that we
+	 * never switch underrun_detect back to false after it's true.
+	 */
+	if (READ_ONCE(fbc->underrun_detected))
+		return;
+
+	schedule_work(&fbc->underrun_work);
+}
+
+/**
+ * intel_fbc_handle_fifo_underrun_irq - disable FBC when we get a FIFO underrun
+ * @i915: i915 device
+ *
+ * Without FBC, most underruns are harmless and don't really cause too many
+ * problems, except for an annoying message on dmesg. With FBC, underruns can
+ * become black screens or even worse, especially when paired with bad
+ * watermarks. So in order for us to be on the safe side, completely disable FBC
+ * in case we ever detect a FIFO underrun on any pipe. An underrun on any pipe
+ * already suggests that watermarks may be bad, so try to be as safe as
+ * possible.
+ *
+ * This function is called from the IRQ handler.
+ */
+void intel_fbc_handle_fifo_underrun_irq(struct drm_i915_private *i915)
+{
+	struct intel_fbc *fbc;
+	enum intel_fbc_id fbc_id;
+
+	for_each_intel_fbc(i915, fbc, fbc_id)
+		__intel_fbc_handle_fifo_underrun_irq(fbc);
+}
+
+/*
+ * The DDX driver changes its behavior depending on the value it reads from
+ * i915.enable_fbc, so sanitize it by translating the default value into either
+ * 0 or 1 in order to allow it to know what's going on.
+ *
+ * Notice that this is done at driver initialization and we still allow user
+ * space to change the value during runtime without sanitizing it again. IGT
+ * relies on being able to change i915.enable_fbc at runtime.
+ */
+static int intel_sanitize_fbc_option(struct drm_i915_private *i915)
+{
+	if (i915->params.enable_fbc >= 0)
+		return !!i915->params.enable_fbc;
+
+	if (!HAS_FBC(i915))
+		return 0;
+
+	if (IS_BROADWELL(i915) || DISPLAY_VER(i915) >= 9)
+		return 1;
+
+	return 0;
+}
+
+static bool need_fbc_vtd_wa(struct drm_i915_private *i915)
+{
+	/* WaFbcTurnOffFbcWhenHyperVisorIsUsed:skl,bxt */
+	if (i915_vtd_active(i915) &&
+	    (IS_SKYLAKE(i915) || IS_BROXTON(i915))) {
+		drm_info(&i915->drm,
+			 "Disabling framebuffer compression (FBC) to prevent screen flicker with VT-d enabled\n");
+		return true;
+	}
+
+	return false;
+}
+
+void intel_fbc_add_plane(struct intel_fbc *fbc, struct intel_plane *plane)
+{
+	plane->fbc = fbc;
+}
+
+static struct intel_fbc *intel_fbc_create(struct drm_i915_private *i915,
+					  enum intel_fbc_id fbc_id)
+{
+	struct intel_fbc *fbc;
+
+	fbc = kzalloc(sizeof(*fbc), GFP_KERNEL);
+	if (!fbc)
+		return NULL;
+
+	fbc->id = fbc_id;
+	fbc->i915 = i915;
+	INIT_WORK(&fbc->underrun_work, intel_fbc_underrun_work_fn);
+	mutex_init(&fbc->lock);
+
+	if (DISPLAY_VER(i915) >= 7)
+		fbc->funcs = &ivb_fbc_funcs;
+	else if (DISPLAY_VER(i915) == 6)
+		fbc->funcs = &snb_fbc_funcs;
+	else if (DISPLAY_VER(i915) == 5)
+		fbc->funcs = &ilk_fbc_funcs;
+	else if (IS_G4X(i915))
+		fbc->funcs = &g4x_fbc_funcs;
+	else if (DISPLAY_VER(i915) == 4)
+		fbc->funcs = &i965_fbc_funcs;
+	else
+		fbc->funcs = &i8xx_fbc_funcs;
+
+	return fbc;
+}
+
+/**
+ * intel_fbc_init - Initialize FBC
+ * @i915: the i915 device
+ *
+ * This function might be called during PM init process.
+ */
+void intel_fbc_init(struct drm_i915_private *i915)
+{
+	enum intel_fbc_id fbc_id;
+
+	if (!drm_mm_initialized(&i915->mm.stolen))
+		RUNTIME_INFO(i915)->fbc_mask = 0;
+
+	if (need_fbc_vtd_wa(i915))
+		RUNTIME_INFO(i915)->fbc_mask = 0;
+
+	i915->params.enable_fbc = intel_sanitize_fbc_option(i915);
+	drm_dbg_kms(&i915->drm, "Sanitized enable_fbc value: %d\n",
+		    i915->params.enable_fbc);
+
+	for_each_fbc_id(i915, fbc_id)
+		i915->display.fbc[fbc_id] = intel_fbc_create(i915, fbc_id);
+}
+
+/**
+ * intel_fbc_sanitize - Sanitize FBC
+ * @i915: the i915 device
+ *
+ * Make sure FBC is initially disabled since we have no
+ * idea eg. into which parts of stolen it might be scribbling
+ * into.
+ */
+void intel_fbc_sanitize(struct drm_i915_private *i915)
+{
+	struct intel_fbc *fbc;
+	enum intel_fbc_id fbc_id;
+
+	for_each_intel_fbc(i915, fbc, fbc_id) {
+		if (intel_fbc_hw_is_active(fbc))
+			intel_fbc_hw_deactivate(fbc);
+	}
+}
+
+static int intel_fbc_debugfs_status_show(struct seq_file *m, void *unused)
+{
+	struct intel_fbc *fbc = m->private;
+	struct drm_i915_private *i915 = fbc->i915;
+	struct intel_plane *plane;
+	intel_wakeref_t wakeref;
+
+	drm_modeset_lock_all(&i915->drm);
+
+	wakeref = intel_runtime_pm_get(&i915->runtime_pm);
+	mutex_lock(&fbc->lock);
+
+	if (fbc->active) {
+		seq_puts(m, "FBC enabled\n");
+		seq_printf(m, "Compressing: %s\n",
+			   str_yes_no(intel_fbc_is_compressing(fbc)));
+	} else {
+		seq_printf(m, "FBC disabled: %s\n", fbc->no_fbc_reason);
+	}
+
+	for_each_intel_plane(&i915->drm, plane) {
+		const struct intel_plane_state *plane_state =
+			to_intel_plane_state(plane->base.state);
+
+		if (plane->fbc != fbc)
+			continue;
+
+		seq_printf(m, "%c [PLANE:%d:%s]: %s\n",
+			   fbc->state.plane == plane ? '*' : ' ',
+			   plane->base.base.id, plane->base.name,
+			   plane_state->no_fbc_reason ?: "FBC possible");
+	}
+
+	mutex_unlock(&fbc->lock);
+	intel_runtime_pm_put(&i915->runtime_pm, wakeref);
+
+	drm_modeset_unlock_all(&i915->drm);
+
+	return 0;
+}
+
+DEFINE_SHOW_ATTRIBUTE(intel_fbc_debugfs_status);
+
+static int intel_fbc_debugfs_false_color_get(void *data, u64 *val)
+{
+	struct intel_fbc *fbc = data;
+
+	*val = fbc->false_color;
+
+	return 0;
+}
+
+static int intel_fbc_debugfs_false_color_set(void *data, u64 val)
+{
+	struct intel_fbc *fbc = data;
+
+	mutex_lock(&fbc->lock);
+
+	fbc->false_color = val;
+
+	if (fbc->active)
+		fbc->funcs->set_false_color(fbc, fbc->false_color);
+
+	mutex_unlock(&fbc->lock);
+
+	return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(intel_fbc_debugfs_false_color_fops,
+			intel_fbc_debugfs_false_color_get,
+			intel_fbc_debugfs_false_color_set,
+			"%llu\n");
+
+static void intel_fbc_debugfs_add(struct intel_fbc *fbc,
+				  struct dentry *parent)
+{
+	debugfs_create_file("i915_fbc_status", 0444, parent,
+			    fbc, &intel_fbc_debugfs_status_fops);
+
+	if (fbc->funcs->set_false_color)
+		debugfs_create_file("i915_fbc_false_color", 0644, parent,
+				    fbc, &intel_fbc_debugfs_false_color_fops);
+}
+
+void intel_fbc_crtc_debugfs_add(struct intel_crtc *crtc)
+{
+	struct intel_plane *plane = to_intel_plane(crtc->base.primary);
+
+	if (plane->fbc)
+		intel_fbc_debugfs_add(plane->fbc, crtc->base.debugfs_entry);
+}
+
+/* FIXME: remove this once igt is on board with per-crtc stuff */
+void intel_fbc_debugfs_register(struct drm_i915_private *i915)
+{
+	struct drm_minor *minor = i915->drm.primary;
+	struct intel_fbc *fbc;
+
+	fbc = i915->display.fbc[INTEL_FBC_A];
+	if (fbc)
+		intel_fbc_debugfs_add(fbc, minor->debugfs_root);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_fbc.h b/drivers/gpu/drm/i915/display/intel_fbc.h
new file mode 100644
index 000000000..4adb98afe
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_fbc.h
@@ -0,0 +1,49 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_FBC_H__
+#define __INTEL_FBC_H__
+
+#include <linux/types.h>
+
+enum fb_op_origin;
+struct drm_i915_private;
+struct intel_atomic_state;
+struct intel_crtc;
+struct intel_crtc_state;
+struct intel_fbc;
+struct intel_plane;
+struct intel_plane_state;
+
+enum intel_fbc_id {
+	INTEL_FBC_A,
+	INTEL_FBC_B,
+
+	I915_MAX_FBCS,
+};
+
+int intel_fbc_atomic_check(struct intel_atomic_state *state);
+bool intel_fbc_pre_update(struct intel_atomic_state *state,
+			  struct intel_crtc *crtc);
+void intel_fbc_post_update(struct intel_atomic_state *state,
+			   struct intel_crtc *crtc);
+void intel_fbc_init(struct drm_i915_private *dev_priv);
+void intel_fbc_cleanup(struct drm_i915_private *dev_priv);
+void intel_fbc_sanitize(struct drm_i915_private *dev_priv);
+void intel_fbc_update(struct intel_atomic_state *state,
+		      struct intel_crtc *crtc);
+void intel_fbc_disable(struct intel_crtc *crtc);
+void intel_fbc_invalidate(struct drm_i915_private *dev_priv,
+			  unsigned int frontbuffer_bits,
+			  enum fb_op_origin origin);
+void intel_fbc_flush(struct drm_i915_private *dev_priv,
+		     unsigned int frontbuffer_bits, enum fb_op_origin origin);
+void intel_fbc_add_plane(struct intel_fbc *fbc, struct intel_plane *plane);
+void intel_fbc_handle_fifo_underrun_irq(struct drm_i915_private *i915);
+void intel_fbc_reset_underrun(struct drm_i915_private *i915);
+void intel_fbc_crtc_debugfs_add(struct intel_crtc *crtc);
+void intel_fbc_debugfs_register(struct drm_i915_private *i915);
+
+#endif /* __INTEL_FBC_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.c b/drivers/gpu/drm/i915/display/intel_fbdev.c
new file mode 100644
index 000000000..968915000
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_fbdev.c
@@ -0,0 +1,733 @@
+/*
+ * Copyright © 2007 David Airlie
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *     David Airlie
+ */
+
+#include <linux/async.h>
+#include <linux/console.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/sysrq.h>
+#include <linux/tty.h>
+#include <linux/vga_switcheroo.h>
+
+#include <drm/drm_crtc.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_fourcc.h>
+
+#include "gem/i915_gem_lmem.h"
+
+#include "i915_drv.h"
+#include "intel_display_types.h"
+#include "intel_fb.h"
+#include "intel_fb_pin.h"
+#include "intel_fbdev.h"
+#include "intel_frontbuffer.h"
+
+struct intel_fbdev {
+	struct drm_fb_helper helper;
+	struct intel_framebuffer *fb;
+	struct i915_vma *vma;
+	unsigned long vma_flags;
+	async_cookie_t cookie;
+	int preferred_bpp;
+
+	/* Whether or not fbdev hpd processing is temporarily suspended */
+	bool hpd_suspended: 1;
+	/* Set when a hotplug was received while HPD processing was suspended */
+	bool hpd_waiting: 1;
+
+	/* Protects hpd_suspended */
+	struct mutex hpd_lock;
+};
+
+static struct intel_frontbuffer *to_frontbuffer(struct intel_fbdev *ifbdev)
+{
+	return ifbdev->fb->frontbuffer;
+}
+
+static void intel_fbdev_invalidate(struct intel_fbdev *ifbdev)
+{
+	intel_frontbuffer_invalidate(to_frontbuffer(ifbdev), ORIGIN_CPU);
+}
+
+static int intel_fbdev_set_par(struct fb_info *info)
+{
+	struct drm_fb_helper *fb_helper = info->par;
+	struct intel_fbdev *ifbdev =
+		container_of(fb_helper, struct intel_fbdev, helper);
+	int ret;
+
+	ret = drm_fb_helper_set_par(info);
+	if (ret == 0)
+		intel_fbdev_invalidate(ifbdev);
+
+	return ret;
+}
+
+static int intel_fbdev_blank(int blank, struct fb_info *info)
+{
+	struct drm_fb_helper *fb_helper = info->par;
+	struct intel_fbdev *ifbdev =
+		container_of(fb_helper, struct intel_fbdev, helper);
+	int ret;
+
+	ret = drm_fb_helper_blank(blank, info);
+	if (ret == 0)
+		intel_fbdev_invalidate(ifbdev);
+
+	return ret;
+}
+
+static int intel_fbdev_pan_display(struct fb_var_screeninfo *var,
+				   struct fb_info *info)
+{
+	struct drm_fb_helper *fb_helper = info->par;
+	struct intel_fbdev *ifbdev =
+		container_of(fb_helper, struct intel_fbdev, helper);
+	int ret;
+
+	ret = drm_fb_helper_pan_display(var, info);
+	if (ret == 0)
+		intel_fbdev_invalidate(ifbdev);
+
+	return ret;
+}
+
+static const struct fb_ops intelfb_ops = {
+	.owner = THIS_MODULE,
+	DRM_FB_HELPER_DEFAULT_OPS,
+	.fb_set_par = intel_fbdev_set_par,
+	.fb_fillrect = drm_fb_helper_cfb_fillrect,
+	.fb_copyarea = drm_fb_helper_cfb_copyarea,
+	.fb_imageblit = drm_fb_helper_cfb_imageblit,
+	.fb_pan_display = intel_fbdev_pan_display,
+	.fb_blank = intel_fbdev_blank,
+};
+
+static int intelfb_alloc(struct drm_fb_helper *helper,
+			 struct drm_fb_helper_surface_size *sizes)
+{
+	struct intel_fbdev *ifbdev =
+		container_of(helper, struct intel_fbdev, helper);
+	struct drm_framebuffer *fb;
+	struct drm_device *dev = helper->dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct drm_mode_fb_cmd2 mode_cmd = {};
+	struct drm_i915_gem_object *obj;
+	int size;
+
+	/* we don't do packed 24bpp */
+	if (sizes->surface_bpp == 24)
+		sizes->surface_bpp = 32;
+
+	mode_cmd.width = sizes->surface_width;
+	mode_cmd.height = sizes->surface_height;
+
+	mode_cmd.pitches[0] = ALIGN(mode_cmd.width *
+				    DIV_ROUND_UP(sizes->surface_bpp, 8), 64);
+	mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
+							  sizes->surface_depth);
+
+	size = mode_cmd.pitches[0] * mode_cmd.height;
+	size = PAGE_ALIGN(size);
+
+	obj = ERR_PTR(-ENODEV);
+	if (HAS_LMEM(dev_priv)) {
+		obj = i915_gem_object_create_lmem(dev_priv, size,
+						  I915_BO_ALLOC_CONTIGUOUS);
+	} else {
+		/*
+		 * If the FB is too big, just don't use it since fbdev is not very
+		 * important and we should probably use that space with FBC or other
+		 * features.
+		 */
+		if (size * 2 < dev_priv->stolen_usable_size)
+			obj = i915_gem_object_create_stolen(dev_priv, size);
+		if (IS_ERR(obj))
+			obj = i915_gem_object_create_shmem(dev_priv, size);
+	}
+
+	if (IS_ERR(obj)) {
+		drm_err(&dev_priv->drm, "failed to allocate framebuffer (%pe)\n", obj);
+		return PTR_ERR(obj);
+	}
+
+	fb = intel_framebuffer_create(obj, &mode_cmd);
+	i915_gem_object_put(obj);
+	if (IS_ERR(fb))
+		return PTR_ERR(fb);
+
+	ifbdev->fb = to_intel_framebuffer(fb);
+	return 0;
+}
+
+static int intelfb_create(struct drm_fb_helper *helper,
+			  struct drm_fb_helper_surface_size *sizes)
+{
+	struct intel_fbdev *ifbdev =
+		container_of(helper, struct intel_fbdev, helper);
+	struct intel_framebuffer *intel_fb = ifbdev->fb;
+	struct drm_device *dev = helper->dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
+	struct i915_ggtt *ggtt = to_gt(dev_priv)->ggtt;
+	const struct i915_gtt_view view = {
+		.type = I915_GTT_VIEW_NORMAL,
+	};
+	intel_wakeref_t wakeref;
+	struct fb_info *info;
+	struct i915_vma *vma;
+	unsigned long flags = 0;
+	bool prealloc = false;
+	void __iomem *vaddr;
+	struct drm_i915_gem_object *obj;
+	struct i915_gem_ww_ctx ww;
+	int ret;
+
+	mutex_lock(&ifbdev->hpd_lock);
+	ret = ifbdev->hpd_suspended ? -EAGAIN : 0;
+	mutex_unlock(&ifbdev->hpd_lock);
+	if (ret)
+		return ret;
+
+	if (intel_fb &&
+	    (sizes->fb_width > intel_fb->base.width ||
+	     sizes->fb_height > intel_fb->base.height)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "BIOS fb too small (%dx%d), we require (%dx%d),"
+			    " releasing it\n",
+			    intel_fb->base.width, intel_fb->base.height,
+			    sizes->fb_width, sizes->fb_height);
+		drm_framebuffer_put(&intel_fb->base);
+		intel_fb = ifbdev->fb = NULL;
+	}
+	if (!intel_fb || drm_WARN_ON(dev, !intel_fb_obj(&intel_fb->base))) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "no BIOS fb, allocating a new one\n");
+		ret = intelfb_alloc(helper, sizes);
+		if (ret)
+			return ret;
+		intel_fb = ifbdev->fb;
+	} else {
+		drm_dbg_kms(&dev_priv->drm, "re-using BIOS fb\n");
+		prealloc = true;
+		sizes->fb_width = intel_fb->base.width;
+		sizes->fb_height = intel_fb->base.height;
+	}
+
+	wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
+
+	/* Pin the GGTT vma for our access via info->screen_base.
+	 * This also validates that any existing fb inherited from the
+	 * BIOS is suitable for own access.
+	 */
+	vma = intel_pin_and_fence_fb_obj(&ifbdev->fb->base, false,
+					 &view, false, &flags);
+	if (IS_ERR(vma)) {
+		ret = PTR_ERR(vma);
+		goto out_unlock;
+	}
+
+	info = drm_fb_helper_alloc_fbi(helper);
+	if (IS_ERR(info)) {
+		drm_err(&dev_priv->drm, "Failed to allocate fb_info (%pe)\n", info);
+		ret = PTR_ERR(info);
+		goto out_unpin;
+	}
+
+	ifbdev->helper.fb = &ifbdev->fb->base;
+
+	info->fbops = &intelfb_ops;
+
+	/* setup aperture base/size for vesafb takeover */
+	obj = intel_fb_obj(&intel_fb->base);
+	if (i915_gem_object_is_lmem(obj)) {
+		struct intel_memory_region *mem = obj->mm.region;
+
+		info->apertures->ranges[0].base = mem->io_start;
+		info->apertures->ranges[0].size = mem->io_size;
+
+		/* Use fbdev's framebuffer from lmem for discrete */
+		info->fix.smem_start =
+			(unsigned long)(mem->io_start +
+					i915_gem_object_get_dma_address(obj, 0));
+		info->fix.smem_len = obj->base.size;
+	} else {
+		info->apertures->ranges[0].base = ggtt->gmadr.start;
+		info->apertures->ranges[0].size = ggtt->mappable_end;
+
+		/* Our framebuffer is the entirety of fbdev's system memory */
+		info->fix.smem_start =
+			(unsigned long)(ggtt->gmadr.start + vma->node.start);
+		info->fix.smem_len = vma->size;
+	}
+
+	for_i915_gem_ww(&ww, ret, false) {
+		ret = i915_gem_object_lock(vma->obj, &ww);
+
+		if (ret)
+			continue;
+
+		vaddr = i915_vma_pin_iomap(vma);
+		if (IS_ERR(vaddr)) {
+			drm_err(&dev_priv->drm,
+				"Failed to remap framebuffer into virtual memory (%pe)\n", vaddr);
+			ret = PTR_ERR(vaddr);
+			continue;
+		}
+	}
+
+	if (ret)
+		goto out_unpin;
+
+	info->screen_base = vaddr;
+	info->screen_size = vma->size;
+
+	drm_fb_helper_fill_info(info, &ifbdev->helper, sizes);
+
+	/* If the object is shmemfs backed, it will have given us zeroed pages.
+	 * If the object is stolen however, it will be full of whatever
+	 * garbage was left in there.
+	 */
+	if (!i915_gem_object_is_shmem(vma->obj) && !prealloc)
+		memset_io(info->screen_base, 0, info->screen_size);
+
+	/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
+
+	drm_dbg_kms(&dev_priv->drm, "allocated %dx%d fb: 0x%08x\n",
+		    ifbdev->fb->base.width, ifbdev->fb->base.height,
+		    i915_ggtt_offset(vma));
+	ifbdev->vma = vma;
+	ifbdev->vma_flags = flags;
+
+	intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
+	vga_switcheroo_client_fb_set(pdev, info);
+	return 0;
+
+out_unpin:
+	intel_unpin_fb_vma(vma, flags);
+out_unlock:
+	intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
+	return ret;
+}
+
+static const struct drm_fb_helper_funcs intel_fb_helper_funcs = {
+	.fb_probe = intelfb_create,
+};
+
+static void intel_fbdev_destroy(struct intel_fbdev *ifbdev)
+{
+	/* We rely on the object-free to release the VMA pinning for
+	 * the info->screen_base mmaping. Leaking the VMA is simpler than
+	 * trying to rectify all the possible error paths leading here.
+	 */
+
+	drm_fb_helper_fini(&ifbdev->helper);
+
+	if (ifbdev->vma)
+		intel_unpin_fb_vma(ifbdev->vma, ifbdev->vma_flags);
+
+	if (ifbdev->fb)
+		drm_framebuffer_remove(&ifbdev->fb->base);
+
+	kfree(ifbdev);
+}
+
+/*
+ * Build an intel_fbdev struct using a BIOS allocated framebuffer, if possible.
+ * The core display code will have read out the current plane configuration,
+ * so we use that to figure out if there's an object for us to use as the
+ * fb, and if so, we re-use it for the fbdev configuration.
+ *
+ * Note we only support a single fb shared across pipes for boot (mostly for
+ * fbcon), so we just find the biggest and use that.
+ */
+static bool intel_fbdev_init_bios(struct drm_device *dev,
+				  struct intel_fbdev *ifbdev)
+{
+	struct drm_i915_private *i915 = to_i915(dev);
+	struct intel_framebuffer *fb = NULL;
+	struct intel_crtc *crtc;
+	unsigned int max_size = 0;
+
+	/* Find the largest fb */
+	for_each_intel_crtc(dev, crtc) {
+		struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+		struct intel_plane *plane =
+			to_intel_plane(crtc->base.primary);
+		struct intel_plane_state *plane_state =
+			to_intel_plane_state(plane->base.state);
+		struct drm_i915_gem_object *obj =
+			intel_fb_obj(plane_state->uapi.fb);
+
+		if (!crtc_state->uapi.active) {
+			drm_dbg_kms(&i915->drm,
+				    "[CRTC:%d:%s] not active, skipping\n",
+				    crtc->base.base.id, crtc->base.name);
+			continue;
+		}
+
+		if (!obj) {
+			drm_dbg_kms(&i915->drm,
+				    "[PLANE:%d:%s] no fb, skipping\n",
+				    plane->base.base.id, plane->base.name);
+			continue;
+		}
+
+		if (obj->base.size > max_size) {
+			drm_dbg_kms(&i915->drm,
+				    "found possible fb from [PLANE:%d:%s]\n",
+				    plane->base.base.id, plane->base.name);
+			fb = to_intel_framebuffer(plane_state->uapi.fb);
+			max_size = obj->base.size;
+		}
+	}
+
+	if (!fb) {
+		drm_dbg_kms(&i915->drm,
+			    "no active fbs found, not using BIOS config\n");
+		goto out;
+	}
+
+	/* Now make sure all the pipes will fit into it */
+	for_each_intel_crtc(dev, crtc) {
+		struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+		struct intel_plane *plane =
+			to_intel_plane(crtc->base.primary);
+		unsigned int cur_size;
+
+		if (!crtc_state->uapi.active) {
+			drm_dbg_kms(&i915->drm,
+				    "[CRTC:%d:%s] not active, skipping\n",
+				    crtc->base.base.id, crtc->base.name);
+			continue;
+		}
+
+		drm_dbg_kms(&i915->drm, "checking [PLANE:%d:%s] for BIOS fb\n",
+			    plane->base.base.id, plane->base.name);
+
+		/*
+		 * See if the plane fb we found above will fit on this
+		 * pipe.  Note we need to use the selected fb's pitch and bpp
+		 * rather than the current pipe's, since they differ.
+		 */
+		cur_size = crtc_state->uapi.adjusted_mode.crtc_hdisplay;
+		cur_size = cur_size * fb->base.format->cpp[0];
+		if (fb->base.pitches[0] < cur_size) {
+			drm_dbg_kms(&i915->drm,
+				    "fb not wide enough for [PLANE:%d:%s] (%d vs %d)\n",
+				    plane->base.base.id, plane->base.name,
+				    cur_size, fb->base.pitches[0]);
+			fb = NULL;
+			break;
+		}
+
+		cur_size = crtc_state->uapi.adjusted_mode.crtc_vdisplay;
+		cur_size = intel_fb_align_height(&fb->base, 0, cur_size);
+		cur_size *= fb->base.pitches[0];
+		drm_dbg_kms(&i915->drm,
+			    "[CRTC:%d:%s] area: %dx%d, bpp: %d, size: %d\n",
+			    crtc->base.base.id, crtc->base.name,
+			    crtc_state->uapi.adjusted_mode.crtc_hdisplay,
+			    crtc_state->uapi.adjusted_mode.crtc_vdisplay,
+			    fb->base.format->cpp[0] * 8,
+			    cur_size);
+
+		if (cur_size > max_size) {
+			drm_dbg_kms(&i915->drm,
+				    "fb not big enough for [PLANE:%d:%s] (%d vs %d)\n",
+				    plane->base.base.id, plane->base.name,
+				    cur_size, max_size);
+			fb = NULL;
+			break;
+		}
+
+		drm_dbg_kms(&i915->drm,
+			    "fb big enough [PLANE:%d:%s] (%d >= %d)\n",
+			    plane->base.base.id, plane->base.name,
+			    max_size, cur_size);
+	}
+
+	if (!fb) {
+		drm_dbg_kms(&i915->drm,
+			    "BIOS fb not suitable for all pipes, not using\n");
+		goto out;
+	}
+
+	ifbdev->preferred_bpp = fb->base.format->cpp[0] * 8;
+	ifbdev->fb = fb;
+
+	drm_framebuffer_get(&ifbdev->fb->base);
+
+	/* Final pass to check if any active pipes don't have fbs */
+	for_each_intel_crtc(dev, crtc) {
+		struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+		struct intel_plane *plane =
+			to_intel_plane(crtc->base.primary);
+		struct intel_plane_state *plane_state =
+			to_intel_plane_state(plane->base.state);
+
+		if (!crtc_state->uapi.active)
+			continue;
+
+		drm_WARN(dev, !plane_state->uapi.fb,
+			 "re-used BIOS config but lost an fb on [PLANE:%d:%s]\n",
+			 plane->base.base.id, plane->base.name);
+	}
+
+
+	drm_dbg_kms(&i915->drm, "using BIOS fb for initial console\n");
+	return true;
+
+out:
+
+	return false;
+}
+
+static void intel_fbdev_suspend_worker(struct work_struct *work)
+{
+	intel_fbdev_set_suspend(&container_of(work,
+					      struct drm_i915_private,
+					      display.fbdev.suspend_work)->drm,
+				FBINFO_STATE_RUNNING,
+				true);
+}
+
+int intel_fbdev_init(struct drm_device *dev)
+{
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_fbdev *ifbdev;
+	int ret;
+
+	if (drm_WARN_ON(dev, !HAS_DISPLAY(dev_priv)))
+		return -ENODEV;
+
+	ifbdev = kzalloc(sizeof(struct intel_fbdev), GFP_KERNEL);
+	if (ifbdev == NULL)
+		return -ENOMEM;
+
+	mutex_init(&ifbdev->hpd_lock);
+	drm_fb_helper_prepare(dev, &ifbdev->helper, &intel_fb_helper_funcs);
+
+	if (!intel_fbdev_init_bios(dev, ifbdev))
+		ifbdev->preferred_bpp = 32;
+
+	ret = drm_fb_helper_init(dev, &ifbdev->helper);
+	if (ret) {
+		kfree(ifbdev);
+		return ret;
+	}
+
+	dev_priv->display.fbdev.fbdev = ifbdev;
+	INIT_WORK(&dev_priv->display.fbdev.suspend_work, intel_fbdev_suspend_worker);
+
+	return 0;
+}
+
+static void intel_fbdev_initial_config(void *data, async_cookie_t cookie)
+{
+	struct intel_fbdev *ifbdev = data;
+
+	/* Due to peculiar init order wrt to hpd handling this is separate. */
+	if (drm_fb_helper_initial_config(&ifbdev->helper,
+					 ifbdev->preferred_bpp))
+		intel_fbdev_unregister(to_i915(ifbdev->helper.dev));
+}
+
+void intel_fbdev_initial_config_async(struct drm_device *dev)
+{
+	struct intel_fbdev *ifbdev = to_i915(dev)->display.fbdev.fbdev;
+
+	if (!ifbdev)
+		return;
+
+	ifbdev->cookie = async_schedule(intel_fbdev_initial_config, ifbdev);
+}
+
+static void intel_fbdev_sync(struct intel_fbdev *ifbdev)
+{
+	if (!ifbdev->cookie)
+		return;
+
+	/* Only serialises with all preceding async calls, hence +1 */
+	async_synchronize_cookie(ifbdev->cookie + 1);
+	ifbdev->cookie = 0;
+}
+
+void intel_fbdev_unregister(struct drm_i915_private *dev_priv)
+{
+	struct intel_fbdev *ifbdev = dev_priv->display.fbdev.fbdev;
+
+	if (!ifbdev)
+		return;
+
+	intel_fbdev_set_suspend(&dev_priv->drm, FBINFO_STATE_SUSPENDED, true);
+
+	if (!current_is_async())
+		intel_fbdev_sync(ifbdev);
+
+	drm_fb_helper_unregister_fbi(&ifbdev->helper);
+}
+
+void intel_fbdev_fini(struct drm_i915_private *dev_priv)
+{
+	struct intel_fbdev *ifbdev = fetch_and_zero(&dev_priv->display.fbdev.fbdev);
+
+	if (!ifbdev)
+		return;
+
+	intel_fbdev_destroy(ifbdev);
+}
+
+/* Suspends/resumes fbdev processing of incoming HPD events. When resuming HPD
+ * processing, fbdev will perform a full connector reprobe if a hotplug event
+ * was received while HPD was suspended.
+ */
+static void intel_fbdev_hpd_set_suspend(struct drm_i915_private *i915, int state)
+{
+	struct intel_fbdev *ifbdev = i915->display.fbdev.fbdev;
+	bool send_hpd = false;
+
+	mutex_lock(&ifbdev->hpd_lock);
+	ifbdev->hpd_suspended = state == FBINFO_STATE_SUSPENDED;
+	send_hpd = !ifbdev->hpd_suspended && ifbdev->hpd_waiting;
+	ifbdev->hpd_waiting = false;
+	mutex_unlock(&ifbdev->hpd_lock);
+
+	if (send_hpd) {
+		drm_dbg_kms(&i915->drm, "Handling delayed fbcon HPD event\n");
+		drm_fb_helper_hotplug_event(&ifbdev->helper);
+	}
+}
+
+void intel_fbdev_set_suspend(struct drm_device *dev, int state, bool synchronous)
+{
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_fbdev *ifbdev = dev_priv->display.fbdev.fbdev;
+	struct fb_info *info;
+
+	if (!ifbdev)
+		return;
+
+	if (drm_WARN_ON(&dev_priv->drm, !HAS_DISPLAY(dev_priv)))
+		return;
+
+	if (!ifbdev->vma)
+		goto set_suspend;
+
+	info = ifbdev->helper.fbdev;
+
+	if (synchronous) {
+		/* Flush any pending work to turn the console on, and then
+		 * wait to turn it off. It must be synchronous as we are
+		 * about to suspend or unload the driver.
+		 *
+		 * Note that from within the work-handler, we cannot flush
+		 * ourselves, so only flush outstanding work upon suspend!
+		 */
+		if (state != FBINFO_STATE_RUNNING)
+			flush_work(&dev_priv->display.fbdev.suspend_work);
+
+		console_lock();
+	} else {
+		/*
+		 * The console lock can be pretty contented on resume due
+		 * to all the printk activity.  Try to keep it out of the hot
+		 * path of resume if possible.
+		 */
+		drm_WARN_ON(dev, state != FBINFO_STATE_RUNNING);
+		if (!console_trylock()) {
+			/* Don't block our own workqueue as this can
+			 * be run in parallel with other i915.ko tasks.
+			 */
+			schedule_work(&dev_priv->display.fbdev.suspend_work);
+			return;
+		}
+	}
+
+	/* On resume from hibernation: If the object is shmemfs backed, it has
+	 * been restored from swap. If the object is stolen however, it will be
+	 * full of whatever garbage was left in there.
+	 */
+	if (state == FBINFO_STATE_RUNNING &&
+	    !i915_gem_object_is_shmem(intel_fb_obj(&ifbdev->fb->base)))
+		memset_io(info->screen_base, 0, info->screen_size);
+
+	drm_fb_helper_set_suspend(&ifbdev->helper, state);
+	console_unlock();
+
+set_suspend:
+	intel_fbdev_hpd_set_suspend(dev_priv, state);
+}
+
+void intel_fbdev_output_poll_changed(struct drm_device *dev)
+{
+	struct intel_fbdev *ifbdev = to_i915(dev)->display.fbdev.fbdev;
+	bool send_hpd;
+
+	if (!ifbdev)
+		return;
+
+	intel_fbdev_sync(ifbdev);
+
+	mutex_lock(&ifbdev->hpd_lock);
+	send_hpd = !ifbdev->hpd_suspended;
+	ifbdev->hpd_waiting = true;
+	mutex_unlock(&ifbdev->hpd_lock);
+
+	if (send_hpd && (ifbdev->vma || ifbdev->helper.deferred_setup))
+		drm_fb_helper_hotplug_event(&ifbdev->helper);
+}
+
+void intel_fbdev_restore_mode(struct drm_device *dev)
+{
+	struct intel_fbdev *ifbdev = to_i915(dev)->display.fbdev.fbdev;
+
+	if (!ifbdev)
+		return;
+
+	intel_fbdev_sync(ifbdev);
+	if (!ifbdev->vma)
+		return;
+
+	if (drm_fb_helper_restore_fbdev_mode_unlocked(&ifbdev->helper) == 0)
+		intel_fbdev_invalidate(ifbdev);
+}
+
+struct intel_framebuffer *intel_fbdev_framebuffer(struct intel_fbdev *fbdev)
+{
+	if (!fbdev || !fbdev->helper.fb)
+		return NULL;
+
+	return to_intel_framebuffer(fbdev->helper.fb);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.h b/drivers/gpu/drm/i915/display/intel_fbdev.h
new file mode 100644
index 000000000..0e95e9472
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_fbdev.h
@@ -0,0 +1,60 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_FBDEV_H__
+#define __INTEL_FBDEV_H__
+
+#include <linux/types.h>
+
+struct drm_device;
+struct drm_i915_private;
+struct intel_fbdev;
+struct intel_framebuffer;
+
+#ifdef CONFIG_DRM_FBDEV_EMULATION
+int intel_fbdev_init(struct drm_device *dev);
+void intel_fbdev_initial_config_async(struct drm_device *dev);
+void intel_fbdev_unregister(struct drm_i915_private *dev_priv);
+void intel_fbdev_fini(struct drm_i915_private *dev_priv);
+void intel_fbdev_set_suspend(struct drm_device *dev, int state, bool synchronous);
+void intel_fbdev_output_poll_changed(struct drm_device *dev);
+void intel_fbdev_restore_mode(struct drm_device *dev);
+struct intel_framebuffer *intel_fbdev_framebuffer(struct intel_fbdev *fbdev);
+#else
+static inline int intel_fbdev_init(struct drm_device *dev)
+{
+	return 0;
+}
+
+static inline void intel_fbdev_initial_config_async(struct drm_device *dev)
+{
+}
+
+static inline void intel_fbdev_unregister(struct drm_i915_private *dev_priv)
+{
+}
+
+static inline void intel_fbdev_fini(struct drm_i915_private *dev_priv)
+{
+}
+
+static inline void intel_fbdev_set_suspend(struct drm_device *dev, int state, bool synchronous)
+{
+}
+
+static inline void intel_fbdev_output_poll_changed(struct drm_device *dev)
+{
+}
+
+static inline void intel_fbdev_restore_mode(struct drm_device *dev)
+{
+}
+static inline struct intel_framebuffer *intel_fbdev_framebuffer(struct intel_fbdev *fbdev)
+{
+	return NULL;
+}
+#endif
+
+#endif /* __INTEL_FBDEV_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_fdi.c b/drivers/gpu/drm/i915/display/intel_fdi.c
new file mode 100644
index 000000000..7f47e5c85
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_fdi.c
@@ -0,0 +1,1076 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#include <linux/string_helpers.h>
+
+#include "intel_atomic.h"
+#include "intel_crtc.h"
+#include "intel_ddi.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_fdi.h"
+
+struct intel_fdi_funcs {
+	void (*fdi_link_train)(struct intel_crtc *crtc,
+			       const struct intel_crtc_state *crtc_state);
+};
+
+static void assert_fdi_tx(struct drm_i915_private *dev_priv,
+			  enum pipe pipe, bool state)
+{
+	bool cur_state;
+
+	if (HAS_DDI(dev_priv)) {
+		/*
+		 * DDI does not have a specific FDI_TX register.
+		 *
+		 * FDI is never fed from EDP transcoder
+		 * so pipe->transcoder cast is fine here.
+		 */
+		enum transcoder cpu_transcoder = (enum transcoder)pipe;
+		cur_state = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(cpu_transcoder)) & TRANS_DDI_FUNC_ENABLE;
+	} else {
+		cur_state = intel_de_read(dev_priv, FDI_TX_CTL(pipe)) & FDI_TX_ENABLE;
+	}
+	I915_STATE_WARN(cur_state != state,
+			"FDI TX state assertion failure (expected %s, current %s)\n",
+			str_on_off(state), str_on_off(cur_state));
+}
+
+void assert_fdi_tx_enabled(struct drm_i915_private *i915, enum pipe pipe)
+{
+	assert_fdi_tx(i915, pipe, true);
+}
+
+void assert_fdi_tx_disabled(struct drm_i915_private *i915, enum pipe pipe)
+{
+	assert_fdi_tx(i915, pipe, false);
+}
+
+static void assert_fdi_rx(struct drm_i915_private *dev_priv,
+			  enum pipe pipe, bool state)
+{
+	bool cur_state;
+
+	cur_state = intel_de_read(dev_priv, FDI_RX_CTL(pipe)) & FDI_RX_ENABLE;
+	I915_STATE_WARN(cur_state != state,
+			"FDI RX state assertion failure (expected %s, current %s)\n",
+			str_on_off(state), str_on_off(cur_state));
+}
+
+void assert_fdi_rx_enabled(struct drm_i915_private *i915, enum pipe pipe)
+{
+	assert_fdi_rx(i915, pipe, true);
+}
+
+void assert_fdi_rx_disabled(struct drm_i915_private *i915, enum pipe pipe)
+{
+	assert_fdi_rx(i915, pipe, false);
+}
+
+void assert_fdi_tx_pll_enabled(struct drm_i915_private *i915,
+			       enum pipe pipe)
+{
+	bool cur_state;
+
+	/* ILK FDI PLL is always enabled */
+	if (IS_IRONLAKE(i915))
+		return;
+
+	/* On Haswell, DDI ports are responsible for the FDI PLL setup */
+	if (HAS_DDI(i915))
+		return;
+
+	cur_state = intel_de_read(i915, FDI_TX_CTL(pipe)) & FDI_TX_PLL_ENABLE;
+	I915_STATE_WARN(!cur_state, "FDI TX PLL assertion failure, should be active but is disabled\n");
+}
+
+static void assert_fdi_rx_pll(struct drm_i915_private *i915,
+			      enum pipe pipe, bool state)
+{
+	bool cur_state;
+
+	cur_state = intel_de_read(i915, FDI_RX_CTL(pipe)) & FDI_RX_PLL_ENABLE;
+	I915_STATE_WARN(cur_state != state,
+			"FDI RX PLL assertion failure (expected %s, current %s)\n",
+			str_on_off(state), str_on_off(cur_state));
+}
+
+void assert_fdi_rx_pll_enabled(struct drm_i915_private *i915, enum pipe pipe)
+{
+	assert_fdi_rx_pll(i915, pipe, true);
+}
+
+void assert_fdi_rx_pll_disabled(struct drm_i915_private *i915, enum pipe pipe)
+{
+	assert_fdi_rx_pll(i915, pipe, false);
+}
+
+void intel_fdi_link_train(struct intel_crtc *crtc,
+			  const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+
+	dev_priv->display.funcs.fdi->fdi_link_train(crtc, crtc_state);
+}
+
+/* units of 100MHz */
+static int pipe_required_fdi_lanes(struct intel_crtc_state *crtc_state)
+{
+	if (crtc_state->hw.enable && crtc_state->has_pch_encoder)
+		return crtc_state->fdi_lanes;
+
+	return 0;
+}
+
+static int ilk_check_fdi_lanes(struct drm_device *dev, enum pipe pipe,
+			       struct intel_crtc_state *pipe_config)
+{
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct drm_atomic_state *state = pipe_config->uapi.state;
+	struct intel_crtc *other_crtc;
+	struct intel_crtc_state *other_crtc_state;
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "checking fdi config on pipe %c, lanes %i\n",
+		    pipe_name(pipe), pipe_config->fdi_lanes);
+	if (pipe_config->fdi_lanes > 4) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "invalid fdi lane config on pipe %c: %i lanes\n",
+			    pipe_name(pipe), pipe_config->fdi_lanes);
+		return -EINVAL;
+	}
+
+	if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
+		if (pipe_config->fdi_lanes > 2) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "only 2 lanes on haswell, required: %i lanes\n",
+				    pipe_config->fdi_lanes);
+			return -EINVAL;
+		} else {
+			return 0;
+		}
+	}
+
+	if (INTEL_NUM_PIPES(dev_priv) == 2)
+		return 0;
+
+	/* Ivybridge 3 pipe is really complicated */
+	switch (pipe) {
+	case PIPE_A:
+		return 0;
+	case PIPE_B:
+		if (pipe_config->fdi_lanes <= 2)
+			return 0;
+
+		other_crtc = intel_crtc_for_pipe(dev_priv, PIPE_C);
+		other_crtc_state =
+			intel_atomic_get_crtc_state(state, other_crtc);
+		if (IS_ERR(other_crtc_state))
+			return PTR_ERR(other_crtc_state);
+
+		if (pipe_required_fdi_lanes(other_crtc_state) > 0) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "invalid shared fdi lane config on pipe %c: %i lanes\n",
+				    pipe_name(pipe), pipe_config->fdi_lanes);
+			return -EINVAL;
+		}
+		return 0;
+	case PIPE_C:
+		if (pipe_config->fdi_lanes > 2) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "only 2 lanes on pipe %c: required %i lanes\n",
+				    pipe_name(pipe), pipe_config->fdi_lanes);
+			return -EINVAL;
+		}
+
+		other_crtc = intel_crtc_for_pipe(dev_priv, PIPE_B);
+		other_crtc_state =
+			intel_atomic_get_crtc_state(state, other_crtc);
+		if (IS_ERR(other_crtc_state))
+			return PTR_ERR(other_crtc_state);
+
+		if (pipe_required_fdi_lanes(other_crtc_state) > 2) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "fdi link B uses too many lanes to enable link C\n");
+			return -EINVAL;
+		}
+		return 0;
+	default:
+		MISSING_CASE(pipe);
+		return 0;
+	}
+}
+
+void intel_fdi_pll_freq_update(struct drm_i915_private *i915)
+{
+	if (IS_IRONLAKE(i915)) {
+		u32 fdi_pll_clk =
+			intel_de_read(i915, FDI_PLL_BIOS_0) & FDI_PLL_FB_CLOCK_MASK;
+
+		i915->display.fdi.pll_freq = (fdi_pll_clk + 2) * 10000;
+	} else if (IS_SANDYBRIDGE(i915) || IS_IVYBRIDGE(i915)) {
+		i915->display.fdi.pll_freq = 270000;
+	} else {
+		return;
+	}
+
+	drm_dbg(&i915->drm, "FDI PLL freq=%d\n", i915->display.fdi.pll_freq);
+}
+
+int intel_fdi_link_freq(struct drm_i915_private *i915,
+			const struct intel_crtc_state *pipe_config)
+{
+	if (HAS_DDI(i915))
+		return pipe_config->port_clock; /* SPLL */
+	else
+		return i915->display.fdi.pll_freq;
+}
+
+int ilk_fdi_compute_config(struct intel_crtc *crtc,
+			   struct intel_crtc_state *pipe_config)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *i915 = to_i915(dev);
+	const struct drm_display_mode *adjusted_mode = &pipe_config->hw.adjusted_mode;
+	int lane, link_bw, fdi_dotclock, ret;
+	bool needs_recompute = false;
+
+retry:
+	/* FDI is a binary signal running at ~2.7GHz, encoding
+	 * each output octet as 10 bits. The actual frequency
+	 * is stored as a divider into a 100MHz clock, and the
+	 * mode pixel clock is stored in units of 1KHz.
+	 * Hence the bw of each lane in terms of the mode signal
+	 * is:
+	 */
+	link_bw = intel_fdi_link_freq(i915, pipe_config);
+
+	fdi_dotclock = adjusted_mode->crtc_clock;
+
+	lane = ilk_get_lanes_required(fdi_dotclock, link_bw,
+				      pipe_config->pipe_bpp);
+
+	pipe_config->fdi_lanes = lane;
+
+	intel_link_compute_m_n(pipe_config->pipe_bpp, lane, fdi_dotclock,
+			       link_bw, &pipe_config->fdi_m_n, false);
+
+	ret = ilk_check_fdi_lanes(dev, crtc->pipe, pipe_config);
+	if (ret == -EDEADLK)
+		return ret;
+
+	if (ret == -EINVAL && pipe_config->pipe_bpp > 6*3) {
+		pipe_config->pipe_bpp -= 2*3;
+		drm_dbg_kms(&i915->drm,
+			    "fdi link bw constraint, reducing pipe bpp to %i\n",
+			    pipe_config->pipe_bpp);
+		needs_recompute = true;
+		pipe_config->bw_constrained = true;
+
+		goto retry;
+	}
+
+	if (needs_recompute)
+		return -EAGAIN;
+
+	return ret;
+}
+
+static void cpt_set_fdi_bc_bifurcation(struct drm_i915_private *dev_priv, bool enable)
+{
+	u32 temp;
+
+	temp = intel_de_read(dev_priv, SOUTH_CHICKEN1);
+	if (!!(temp & FDI_BC_BIFURCATION_SELECT) == enable)
+		return;
+
+	drm_WARN_ON(&dev_priv->drm,
+		    intel_de_read(dev_priv, FDI_RX_CTL(PIPE_B)) &
+		    FDI_RX_ENABLE);
+	drm_WARN_ON(&dev_priv->drm,
+		    intel_de_read(dev_priv, FDI_RX_CTL(PIPE_C)) &
+		    FDI_RX_ENABLE);
+
+	temp &= ~FDI_BC_BIFURCATION_SELECT;
+	if (enable)
+		temp |= FDI_BC_BIFURCATION_SELECT;
+
+	drm_dbg_kms(&dev_priv->drm, "%sabling fdi C rx\n",
+		    enable ? "en" : "dis");
+	intel_de_write(dev_priv, SOUTH_CHICKEN1, temp);
+	intel_de_posting_read(dev_priv, SOUTH_CHICKEN1);
+}
+
+static void ivb_update_fdi_bc_bifurcation(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+
+	switch (crtc->pipe) {
+	case PIPE_A:
+		break;
+	case PIPE_B:
+		if (crtc_state->fdi_lanes > 2)
+			cpt_set_fdi_bc_bifurcation(dev_priv, false);
+		else
+			cpt_set_fdi_bc_bifurcation(dev_priv, true);
+
+		break;
+	case PIPE_C:
+		cpt_set_fdi_bc_bifurcation(dev_priv, true);
+
+		break;
+	default:
+		MISSING_CASE(crtc->pipe);
+	}
+}
+
+void intel_fdi_normal_train(struct intel_crtc *crtc)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	enum pipe pipe = crtc->pipe;
+	i915_reg_t reg;
+	u32 temp;
+
+	/* enable normal train */
+	reg = FDI_TX_CTL(pipe);
+	temp = intel_de_read(dev_priv, reg);
+	if (IS_IVYBRIDGE(dev_priv)) {
+		temp &= ~FDI_LINK_TRAIN_NONE_IVB;
+		temp |= FDI_LINK_TRAIN_NONE_IVB | FDI_TX_ENHANCE_FRAME_ENABLE;
+	} else {
+		temp &= ~FDI_LINK_TRAIN_NONE;
+		temp |= FDI_LINK_TRAIN_NONE | FDI_TX_ENHANCE_FRAME_ENABLE;
+	}
+	intel_de_write(dev_priv, reg, temp);
+
+	reg = FDI_RX_CTL(pipe);
+	temp = intel_de_read(dev_priv, reg);
+	if (HAS_PCH_CPT(dev_priv)) {
+		temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
+		temp |= FDI_LINK_TRAIN_NORMAL_CPT;
+	} else {
+		temp &= ~FDI_LINK_TRAIN_NONE;
+		temp |= FDI_LINK_TRAIN_NONE;
+	}
+	intel_de_write(dev_priv, reg, temp | FDI_RX_ENHANCE_FRAME_ENABLE);
+
+	/* wait one idle pattern time */
+	intel_de_posting_read(dev_priv, reg);
+	udelay(1000);
+
+	/* IVB wants error correction enabled */
+	if (IS_IVYBRIDGE(dev_priv))
+		intel_de_write(dev_priv, reg,
+			       intel_de_read(dev_priv, reg) | FDI_FS_ERRC_ENABLE | FDI_FE_ERRC_ENABLE);
+}
+
+/* The FDI link training functions for ILK/Ibexpeak. */
+static void ilk_fdi_link_train(struct intel_crtc *crtc,
+			       const struct intel_crtc_state *crtc_state)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	enum pipe pipe = crtc->pipe;
+	i915_reg_t reg;
+	u32 temp, tries;
+
+	/*
+	 * Write the TU size bits before fdi link training, so that error
+	 * detection works.
+	 */
+	intel_de_write(dev_priv, FDI_RX_TUSIZE1(pipe),
+		       intel_de_read(dev_priv, PIPE_DATA_M1(pipe)) & TU_SIZE_MASK);
+
+	/* FDI needs bits from pipe first */
+	assert_transcoder_enabled(dev_priv, crtc_state->cpu_transcoder);
+
+	/* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
+	   for train result */
+	reg = FDI_RX_IMR(pipe);
+	temp = intel_de_read(dev_priv, reg);
+	temp &= ~FDI_RX_SYMBOL_LOCK;
+	temp &= ~FDI_RX_BIT_LOCK;
+	intel_de_write(dev_priv, reg, temp);
+	intel_de_read(dev_priv, reg);
+	udelay(150);
+
+	/* enable CPU FDI TX and PCH FDI RX */
+	reg = FDI_TX_CTL(pipe);
+	temp = intel_de_read(dev_priv, reg);
+	temp &= ~FDI_DP_PORT_WIDTH_MASK;
+	temp |= FDI_DP_PORT_WIDTH(crtc_state->fdi_lanes);
+	temp &= ~FDI_LINK_TRAIN_NONE;
+	temp |= FDI_LINK_TRAIN_PATTERN_1;
+	intel_de_write(dev_priv, reg, temp | FDI_TX_ENABLE);
+
+	reg = FDI_RX_CTL(pipe);
+	temp = intel_de_read(dev_priv, reg);
+	temp &= ~FDI_LINK_TRAIN_NONE;
+	temp |= FDI_LINK_TRAIN_PATTERN_1;
+	intel_de_write(dev_priv, reg, temp | FDI_RX_ENABLE);
+
+	intel_de_posting_read(dev_priv, reg);
+	udelay(150);
+
+	/* Ironlake workaround, enable clock pointer after FDI enable*/
+	intel_de_write(dev_priv, FDI_RX_CHICKEN(pipe),
+		       FDI_RX_PHASE_SYNC_POINTER_OVR);
+	intel_de_write(dev_priv, FDI_RX_CHICKEN(pipe),
+		       FDI_RX_PHASE_SYNC_POINTER_OVR | FDI_RX_PHASE_SYNC_POINTER_EN);
+
+	reg = FDI_RX_IIR(pipe);
+	for (tries = 0; tries < 5; tries++) {
+		temp = intel_de_read(dev_priv, reg);
+		drm_dbg_kms(&dev_priv->drm, "FDI_RX_IIR 0x%x\n", temp);
+
+		if ((temp & FDI_RX_BIT_LOCK)) {
+			drm_dbg_kms(&dev_priv->drm, "FDI train 1 done.\n");
+			intel_de_write(dev_priv, reg, temp | FDI_RX_BIT_LOCK);
+			break;
+		}
+	}
+	if (tries == 5)
+		drm_err(&dev_priv->drm, "FDI train 1 fail!\n");
+
+	/* Train 2 */
+	reg = FDI_TX_CTL(pipe);
+	temp = intel_de_read(dev_priv, reg);
+	temp &= ~FDI_LINK_TRAIN_NONE;
+	temp |= FDI_LINK_TRAIN_PATTERN_2;
+	intel_de_write(dev_priv, reg, temp);
+
+	reg = FDI_RX_CTL(pipe);
+	temp = intel_de_read(dev_priv, reg);
+	temp &= ~FDI_LINK_TRAIN_NONE;
+	temp |= FDI_LINK_TRAIN_PATTERN_2;
+	intel_de_write(dev_priv, reg, temp);
+
+	intel_de_posting_read(dev_priv, reg);
+	udelay(150);
+
+	reg = FDI_RX_IIR(pipe);
+	for (tries = 0; tries < 5; tries++) {
+		temp = intel_de_read(dev_priv, reg);
+		drm_dbg_kms(&dev_priv->drm, "FDI_RX_IIR 0x%x\n", temp);
+
+		if (temp & FDI_RX_SYMBOL_LOCK) {
+			intel_de_write(dev_priv, reg,
+				       temp | FDI_RX_SYMBOL_LOCK);
+			drm_dbg_kms(&dev_priv->drm, "FDI train 2 done.\n");
+			break;
+		}
+	}
+	if (tries == 5)
+		drm_err(&dev_priv->drm, "FDI train 2 fail!\n");
+
+	drm_dbg_kms(&dev_priv->drm, "FDI train done\n");
+
+}
+
+static const int snb_b_fdi_train_param[] = {
+	FDI_LINK_TRAIN_400MV_0DB_SNB_B,
+	FDI_LINK_TRAIN_400MV_6DB_SNB_B,
+	FDI_LINK_TRAIN_600MV_3_5DB_SNB_B,
+	FDI_LINK_TRAIN_800MV_0DB_SNB_B,
+};
+
+/* The FDI link training functions for SNB/Cougarpoint. */
+static void gen6_fdi_link_train(struct intel_crtc *crtc,
+				const struct intel_crtc_state *crtc_state)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	enum pipe pipe = crtc->pipe;
+	i915_reg_t reg;
+	u32 temp, i, retry;
+
+	/*
+	 * Write the TU size bits before fdi link training, so that error
+	 * detection works.
+	 */
+	intel_de_write(dev_priv, FDI_RX_TUSIZE1(pipe),
+		       intel_de_read(dev_priv, PIPE_DATA_M1(pipe)) & TU_SIZE_MASK);
+
+	/* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
+	   for train result */
+	reg = FDI_RX_IMR(pipe);
+	temp = intel_de_read(dev_priv, reg);
+	temp &= ~FDI_RX_SYMBOL_LOCK;
+	temp &= ~FDI_RX_BIT_LOCK;
+	intel_de_write(dev_priv, reg, temp);
+
+	intel_de_posting_read(dev_priv, reg);
+	udelay(150);
+
+	/* enable CPU FDI TX and PCH FDI RX */
+	reg = FDI_TX_CTL(pipe);
+	temp = intel_de_read(dev_priv, reg);
+	temp &= ~FDI_DP_PORT_WIDTH_MASK;
+	temp |= FDI_DP_PORT_WIDTH(crtc_state->fdi_lanes);
+	temp &= ~FDI_LINK_TRAIN_NONE;
+	temp |= FDI_LINK_TRAIN_PATTERN_1;
+	temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
+	/* SNB-B */
+	temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
+	intel_de_write(dev_priv, reg, temp | FDI_TX_ENABLE);
+
+	intel_de_write(dev_priv, FDI_RX_MISC(pipe),
+		       FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90);
+
+	reg = FDI_RX_CTL(pipe);
+	temp = intel_de_read(dev_priv, reg);
+	if (HAS_PCH_CPT(dev_priv)) {
+		temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
+		temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
+	} else {
+		temp &= ~FDI_LINK_TRAIN_NONE;
+		temp |= FDI_LINK_TRAIN_PATTERN_1;
+	}
+	intel_de_write(dev_priv, reg, temp | FDI_RX_ENABLE);
+
+	intel_de_posting_read(dev_priv, reg);
+	udelay(150);
+
+	for (i = 0; i < 4; i++) {
+		reg = FDI_TX_CTL(pipe);
+		temp = intel_de_read(dev_priv, reg);
+		temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
+		temp |= snb_b_fdi_train_param[i];
+		intel_de_write(dev_priv, reg, temp);
+
+		intel_de_posting_read(dev_priv, reg);
+		udelay(500);
+
+		for (retry = 0; retry < 5; retry++) {
+			reg = FDI_RX_IIR(pipe);
+			temp = intel_de_read(dev_priv, reg);
+			drm_dbg_kms(&dev_priv->drm, "FDI_RX_IIR 0x%x\n", temp);
+			if (temp & FDI_RX_BIT_LOCK) {
+				intel_de_write(dev_priv, reg,
+					       temp | FDI_RX_BIT_LOCK);
+				drm_dbg_kms(&dev_priv->drm,
+					    "FDI train 1 done.\n");
+				break;
+			}
+			udelay(50);
+		}
+		if (retry < 5)
+			break;
+	}
+	if (i == 4)
+		drm_err(&dev_priv->drm, "FDI train 1 fail!\n");
+
+	/* Train 2 */
+	reg = FDI_TX_CTL(pipe);
+	temp = intel_de_read(dev_priv, reg);
+	temp &= ~FDI_LINK_TRAIN_NONE;
+	temp |= FDI_LINK_TRAIN_PATTERN_2;
+	if (IS_SANDYBRIDGE(dev_priv)) {
+		temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
+		/* SNB-B */
+		temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
+	}
+	intel_de_write(dev_priv, reg, temp);
+
+	reg = FDI_RX_CTL(pipe);
+	temp = intel_de_read(dev_priv, reg);
+	if (HAS_PCH_CPT(dev_priv)) {
+		temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
+		temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
+	} else {
+		temp &= ~FDI_LINK_TRAIN_NONE;
+		temp |= FDI_LINK_TRAIN_PATTERN_2;
+	}
+	intel_de_write(dev_priv, reg, temp);
+
+	intel_de_posting_read(dev_priv, reg);
+	udelay(150);
+
+	for (i = 0; i < 4; i++) {
+		reg = FDI_TX_CTL(pipe);
+		temp = intel_de_read(dev_priv, reg);
+		temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
+		temp |= snb_b_fdi_train_param[i];
+		intel_de_write(dev_priv, reg, temp);
+
+		intel_de_posting_read(dev_priv, reg);
+		udelay(500);
+
+		for (retry = 0; retry < 5; retry++) {
+			reg = FDI_RX_IIR(pipe);
+			temp = intel_de_read(dev_priv, reg);
+			drm_dbg_kms(&dev_priv->drm, "FDI_RX_IIR 0x%x\n", temp);
+			if (temp & FDI_RX_SYMBOL_LOCK) {
+				intel_de_write(dev_priv, reg,
+					       temp | FDI_RX_SYMBOL_LOCK);
+				drm_dbg_kms(&dev_priv->drm,
+					    "FDI train 2 done.\n");
+				break;
+			}
+			udelay(50);
+		}
+		if (retry < 5)
+			break;
+	}
+	if (i == 4)
+		drm_err(&dev_priv->drm, "FDI train 2 fail!\n");
+
+	drm_dbg_kms(&dev_priv->drm, "FDI train done.\n");
+}
+
+/* Manual link training for Ivy Bridge A0 parts */
+static void ivb_manual_fdi_link_train(struct intel_crtc *crtc,
+				      const struct intel_crtc_state *crtc_state)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	enum pipe pipe = crtc->pipe;
+	i915_reg_t reg;
+	u32 temp, i, j;
+
+	ivb_update_fdi_bc_bifurcation(crtc_state);
+
+	/*
+	 * Write the TU size bits before fdi link training, so that error
+	 * detection works.
+	 */
+	intel_de_write(dev_priv, FDI_RX_TUSIZE1(pipe),
+		       intel_de_read(dev_priv, PIPE_DATA_M1(pipe)) & TU_SIZE_MASK);
+
+	/* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
+	   for train result */
+	reg = FDI_RX_IMR(pipe);
+	temp = intel_de_read(dev_priv, reg);
+	temp &= ~FDI_RX_SYMBOL_LOCK;
+	temp &= ~FDI_RX_BIT_LOCK;
+	intel_de_write(dev_priv, reg, temp);
+
+	intel_de_posting_read(dev_priv, reg);
+	udelay(150);
+
+	drm_dbg_kms(&dev_priv->drm, "FDI_RX_IIR before link train 0x%x\n",
+		    intel_de_read(dev_priv, FDI_RX_IIR(pipe)));
+
+	/* Try each vswing and preemphasis setting twice before moving on */
+	for (j = 0; j < ARRAY_SIZE(snb_b_fdi_train_param) * 2; j++) {
+		/* disable first in case we need to retry */
+		reg = FDI_TX_CTL(pipe);
+		temp = intel_de_read(dev_priv, reg);
+		temp &= ~(FDI_LINK_TRAIN_AUTO | FDI_LINK_TRAIN_NONE_IVB);
+		temp &= ~FDI_TX_ENABLE;
+		intel_de_write(dev_priv, reg, temp);
+
+		reg = FDI_RX_CTL(pipe);
+		temp = intel_de_read(dev_priv, reg);
+		temp &= ~FDI_LINK_TRAIN_AUTO;
+		temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
+		temp &= ~FDI_RX_ENABLE;
+		intel_de_write(dev_priv, reg, temp);
+
+		/* enable CPU FDI TX and PCH FDI RX */
+		reg = FDI_TX_CTL(pipe);
+		temp = intel_de_read(dev_priv, reg);
+		temp &= ~FDI_DP_PORT_WIDTH_MASK;
+		temp |= FDI_DP_PORT_WIDTH(crtc_state->fdi_lanes);
+		temp |= FDI_LINK_TRAIN_PATTERN_1_IVB;
+		temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
+		temp |= snb_b_fdi_train_param[j/2];
+		temp |= FDI_COMPOSITE_SYNC;
+		intel_de_write(dev_priv, reg, temp | FDI_TX_ENABLE);
+
+		intel_de_write(dev_priv, FDI_RX_MISC(pipe),
+			       FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90);
+
+		reg = FDI_RX_CTL(pipe);
+		temp = intel_de_read(dev_priv, reg);
+		temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
+		temp |= FDI_COMPOSITE_SYNC;
+		intel_de_write(dev_priv, reg, temp | FDI_RX_ENABLE);
+
+		intel_de_posting_read(dev_priv, reg);
+		udelay(1); /* should be 0.5us */
+
+		for (i = 0; i < 4; i++) {
+			reg = FDI_RX_IIR(pipe);
+			temp = intel_de_read(dev_priv, reg);
+			drm_dbg_kms(&dev_priv->drm, "FDI_RX_IIR 0x%x\n", temp);
+
+			if (temp & FDI_RX_BIT_LOCK ||
+			    (intel_de_read(dev_priv, reg) & FDI_RX_BIT_LOCK)) {
+				intel_de_write(dev_priv, reg,
+					       temp | FDI_RX_BIT_LOCK);
+				drm_dbg_kms(&dev_priv->drm,
+					    "FDI train 1 done, level %i.\n",
+					    i);
+				break;
+			}
+			udelay(1); /* should be 0.5us */
+		}
+		if (i == 4) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "FDI train 1 fail on vswing %d\n", j / 2);
+			continue;
+		}
+
+		/* Train 2 */
+		reg = FDI_TX_CTL(pipe);
+		temp = intel_de_read(dev_priv, reg);
+		temp &= ~FDI_LINK_TRAIN_NONE_IVB;
+		temp |= FDI_LINK_TRAIN_PATTERN_2_IVB;
+		intel_de_write(dev_priv, reg, temp);
+
+		reg = FDI_RX_CTL(pipe);
+		temp = intel_de_read(dev_priv, reg);
+		temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
+		temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
+		intel_de_write(dev_priv, reg, temp);
+
+		intel_de_posting_read(dev_priv, reg);
+		udelay(2); /* should be 1.5us */
+
+		for (i = 0; i < 4; i++) {
+			reg = FDI_RX_IIR(pipe);
+			temp = intel_de_read(dev_priv, reg);
+			drm_dbg_kms(&dev_priv->drm, "FDI_RX_IIR 0x%x\n", temp);
+
+			if (temp & FDI_RX_SYMBOL_LOCK ||
+			    (intel_de_read(dev_priv, reg) & FDI_RX_SYMBOL_LOCK)) {
+				intel_de_write(dev_priv, reg,
+					       temp | FDI_RX_SYMBOL_LOCK);
+				drm_dbg_kms(&dev_priv->drm,
+					    "FDI train 2 done, level %i.\n",
+					    i);
+				goto train_done;
+			}
+			udelay(2); /* should be 1.5us */
+		}
+		if (i == 4)
+			drm_dbg_kms(&dev_priv->drm,
+				    "FDI train 2 fail on vswing %d\n", j / 2);
+	}
+
+train_done:
+	drm_dbg_kms(&dev_priv->drm, "FDI train done.\n");
+}
+
+/* Starting with Haswell, different DDI ports can work in FDI mode for
+ * connection to the PCH-located connectors. For this, it is necessary to train
+ * both the DDI port and PCH receiver for the desired DDI buffer settings.
+ *
+ * The recommended port to work in FDI mode is DDI E, which we use here. Also,
+ * please note that when FDI mode is active on DDI E, it shares 2 lines with
+ * DDI A (which is used for eDP)
+ */
+void hsw_fdi_link_train(struct intel_encoder *encoder,
+			const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	u32 temp, i, rx_ctl_val;
+	int n_entries;
+
+	encoder->get_buf_trans(encoder, crtc_state, &n_entries);
+
+	hsw_prepare_dp_ddi_buffers(encoder, crtc_state);
+
+	/* Set the FDI_RX_MISC pwrdn lanes and the 2 workarounds listed at the
+	 * mode set "sequence for CRT port" document:
+	 * - TP1 to TP2 time with the default value
+	 * - FDI delay to 90h
+	 *
+	 * WaFDIAutoLinkSetTimingOverrride:hsw
+	 */
+	intel_de_write(dev_priv, FDI_RX_MISC(PIPE_A),
+		       FDI_RX_PWRDN_LANE1_VAL(2) | FDI_RX_PWRDN_LANE0_VAL(2) | FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90);
+
+	/* Enable the PCH Receiver FDI PLL */
+	rx_ctl_val = dev_priv->display.fdi.rx_config | FDI_RX_ENHANCE_FRAME_ENABLE |
+		     FDI_RX_PLL_ENABLE |
+		     FDI_DP_PORT_WIDTH(crtc_state->fdi_lanes);
+	intel_de_write(dev_priv, FDI_RX_CTL(PIPE_A), rx_ctl_val);
+	intel_de_posting_read(dev_priv, FDI_RX_CTL(PIPE_A));
+	udelay(220);
+
+	/* Switch from Rawclk to PCDclk */
+	rx_ctl_val |= FDI_PCDCLK;
+	intel_de_write(dev_priv, FDI_RX_CTL(PIPE_A), rx_ctl_val);
+
+	/* Configure Port Clock Select */
+	drm_WARN_ON(&dev_priv->drm, crtc_state->shared_dpll->info->id != DPLL_ID_SPLL);
+	intel_ddi_enable_clock(encoder, crtc_state);
+
+	/* Start the training iterating through available voltages and emphasis,
+	 * testing each value twice. */
+	for (i = 0; i < n_entries * 2; i++) {
+		/* Configure DP_TP_CTL with auto-training */
+		intel_de_write(dev_priv, DP_TP_CTL(PORT_E),
+			       DP_TP_CTL_FDI_AUTOTRAIN |
+			       DP_TP_CTL_ENHANCED_FRAME_ENABLE |
+			       DP_TP_CTL_LINK_TRAIN_PAT1 |
+			       DP_TP_CTL_ENABLE);
+
+		/* Configure and enable DDI_BUF_CTL for DDI E with next voltage.
+		 * DDI E does not support port reversal, the functionality is
+		 * achieved on the PCH side in FDI_RX_CTL, so no need to set the
+		 * port reversal bit */
+		intel_de_write(dev_priv, DDI_BUF_CTL(PORT_E),
+			       DDI_BUF_CTL_ENABLE | ((crtc_state->fdi_lanes - 1) << 1) | DDI_BUF_TRANS_SELECT(i / 2));
+		intel_de_posting_read(dev_priv, DDI_BUF_CTL(PORT_E));
+
+		udelay(600);
+
+		/* Program PCH FDI Receiver TU */
+		intel_de_write(dev_priv, FDI_RX_TUSIZE1(PIPE_A), TU_SIZE(64));
+
+		/* Enable PCH FDI Receiver with auto-training */
+		rx_ctl_val |= FDI_RX_ENABLE | FDI_LINK_TRAIN_AUTO;
+		intel_de_write(dev_priv, FDI_RX_CTL(PIPE_A), rx_ctl_val);
+		intel_de_posting_read(dev_priv, FDI_RX_CTL(PIPE_A));
+
+		/* Wait for FDI receiver lane calibration */
+		udelay(30);
+
+		/* Unset FDI_RX_MISC pwrdn lanes */
+		temp = intel_de_read(dev_priv, FDI_RX_MISC(PIPE_A));
+		temp &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK);
+		intel_de_write(dev_priv, FDI_RX_MISC(PIPE_A), temp);
+		intel_de_posting_read(dev_priv, FDI_RX_MISC(PIPE_A));
+
+		/* Wait for FDI auto training time */
+		udelay(5);
+
+		temp = intel_de_read(dev_priv, DP_TP_STATUS(PORT_E));
+		if (temp & DP_TP_STATUS_AUTOTRAIN_DONE) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "FDI link training done on step %d\n", i);
+			break;
+		}
+
+		/*
+		 * Leave things enabled even if we failed to train FDI.
+		 * Results in less fireworks from the state checker.
+		 */
+		if (i == n_entries * 2 - 1) {
+			drm_err(&dev_priv->drm, "FDI link training failed!\n");
+			break;
+		}
+
+		rx_ctl_val &= ~FDI_RX_ENABLE;
+		intel_de_write(dev_priv, FDI_RX_CTL(PIPE_A), rx_ctl_val);
+		intel_de_posting_read(dev_priv, FDI_RX_CTL(PIPE_A));
+
+		temp = intel_de_read(dev_priv, DDI_BUF_CTL(PORT_E));
+		temp &= ~DDI_BUF_CTL_ENABLE;
+		intel_de_write(dev_priv, DDI_BUF_CTL(PORT_E), temp);
+		intel_de_posting_read(dev_priv, DDI_BUF_CTL(PORT_E));
+
+		/* Disable DP_TP_CTL and FDI_RX_CTL and retry */
+		temp = intel_de_read(dev_priv, DP_TP_CTL(PORT_E));
+		temp &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK);
+		temp |= DP_TP_CTL_LINK_TRAIN_PAT1;
+		intel_de_write(dev_priv, DP_TP_CTL(PORT_E), temp);
+		intel_de_posting_read(dev_priv, DP_TP_CTL(PORT_E));
+
+		intel_wait_ddi_buf_idle(dev_priv, PORT_E);
+
+		/* Reset FDI_RX_MISC pwrdn lanes */
+		temp = intel_de_read(dev_priv, FDI_RX_MISC(PIPE_A));
+		temp &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK);
+		temp |= FDI_RX_PWRDN_LANE1_VAL(2) | FDI_RX_PWRDN_LANE0_VAL(2);
+		intel_de_write(dev_priv, FDI_RX_MISC(PIPE_A), temp);
+		intel_de_posting_read(dev_priv, FDI_RX_MISC(PIPE_A));
+	}
+
+	/* Enable normal pixel sending for FDI */
+	intel_de_write(dev_priv, DP_TP_CTL(PORT_E),
+		       DP_TP_CTL_FDI_AUTOTRAIN |
+		       DP_TP_CTL_LINK_TRAIN_NORMAL |
+		       DP_TP_CTL_ENHANCED_FRAME_ENABLE |
+		       DP_TP_CTL_ENABLE);
+}
+
+void hsw_fdi_disable(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	u32 val;
+
+	/*
+	 * Bspec lists this as both step 13 (before DDI_BUF_CTL disable)
+	 * and step 18 (after clearing PORT_CLK_SEL). Based on a BUN,
+	 * step 13 is the correct place for it. Step 18 is where it was
+	 * originally before the BUN.
+	 */
+	val = intel_de_read(dev_priv, FDI_RX_CTL(PIPE_A));
+	val &= ~FDI_RX_ENABLE;
+	intel_de_write(dev_priv, FDI_RX_CTL(PIPE_A), val);
+
+	val = intel_de_read(dev_priv, DDI_BUF_CTL(PORT_E));
+	val &= ~DDI_BUF_CTL_ENABLE;
+	intel_de_write(dev_priv, DDI_BUF_CTL(PORT_E), val);
+
+	intel_wait_ddi_buf_idle(dev_priv, PORT_E);
+
+	intel_ddi_disable_clock(encoder);
+
+	val = intel_de_read(dev_priv, FDI_RX_MISC(PIPE_A));
+	val &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK);
+	val |= FDI_RX_PWRDN_LANE1_VAL(2) | FDI_RX_PWRDN_LANE0_VAL(2);
+	intel_de_write(dev_priv, FDI_RX_MISC(PIPE_A), val);
+
+	val = intel_de_read(dev_priv, FDI_RX_CTL(PIPE_A));
+	val &= ~FDI_PCDCLK;
+	intel_de_write(dev_priv, FDI_RX_CTL(PIPE_A), val);
+
+	val = intel_de_read(dev_priv, FDI_RX_CTL(PIPE_A));
+	val &= ~FDI_RX_PLL_ENABLE;
+	intel_de_write(dev_priv, FDI_RX_CTL(PIPE_A), val);
+}
+
+void ilk_fdi_pll_enable(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+	i915_reg_t reg;
+	u32 temp;
+
+	/* enable PCH FDI RX PLL, wait warmup plus DMI latency */
+	reg = FDI_RX_CTL(pipe);
+	temp = intel_de_read(dev_priv, reg);
+	temp &= ~(FDI_DP_PORT_WIDTH_MASK | (0x7 << 16));
+	temp |= FDI_DP_PORT_WIDTH(crtc_state->fdi_lanes);
+	temp |= (intel_de_read(dev_priv, PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
+	intel_de_write(dev_priv, reg, temp | FDI_RX_PLL_ENABLE);
+
+	intel_de_posting_read(dev_priv, reg);
+	udelay(200);
+
+	/* Switch from Rawclk to PCDclk */
+	temp = intel_de_read(dev_priv, reg);
+	intel_de_write(dev_priv, reg, temp | FDI_PCDCLK);
+
+	intel_de_posting_read(dev_priv, reg);
+	udelay(200);
+
+	/* Enable CPU FDI TX PLL, always on for Ironlake */
+	reg = FDI_TX_CTL(pipe);
+	temp = intel_de_read(dev_priv, reg);
+	if ((temp & FDI_TX_PLL_ENABLE) == 0) {
+		intel_de_write(dev_priv, reg, temp | FDI_TX_PLL_ENABLE);
+
+		intel_de_posting_read(dev_priv, reg);
+		udelay(100);
+	}
+}
+
+void ilk_fdi_pll_disable(struct intel_crtc *crtc)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	enum pipe pipe = crtc->pipe;
+	i915_reg_t reg;
+	u32 temp;
+
+	/* Switch from PCDclk to Rawclk */
+	reg = FDI_RX_CTL(pipe);
+	temp = intel_de_read(dev_priv, reg);
+	intel_de_write(dev_priv, reg, temp & ~FDI_PCDCLK);
+
+	/* Disable CPU FDI TX PLL */
+	reg = FDI_TX_CTL(pipe);
+	temp = intel_de_read(dev_priv, reg);
+	intel_de_write(dev_priv, reg, temp & ~FDI_TX_PLL_ENABLE);
+
+	intel_de_posting_read(dev_priv, reg);
+	udelay(100);
+
+	reg = FDI_RX_CTL(pipe);
+	temp = intel_de_read(dev_priv, reg);
+	intel_de_write(dev_priv, reg, temp & ~FDI_RX_PLL_ENABLE);
+
+	/* Wait for the clocks to turn off. */
+	intel_de_posting_read(dev_priv, reg);
+	udelay(100);
+}
+
+void ilk_fdi_disable(struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+	i915_reg_t reg;
+	u32 temp;
+
+	/* disable CPU FDI tx and PCH FDI rx */
+	reg = FDI_TX_CTL(pipe);
+	temp = intel_de_read(dev_priv, reg);
+	intel_de_write(dev_priv, reg, temp & ~FDI_TX_ENABLE);
+	intel_de_posting_read(dev_priv, reg);
+
+	reg = FDI_RX_CTL(pipe);
+	temp = intel_de_read(dev_priv, reg);
+	temp &= ~(0x7 << 16);
+	temp |= (intel_de_read(dev_priv, PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
+	intel_de_write(dev_priv, reg, temp & ~FDI_RX_ENABLE);
+
+	intel_de_posting_read(dev_priv, reg);
+	udelay(100);
+
+	/* Ironlake workaround, disable clock pointer after downing FDI */
+	if (HAS_PCH_IBX(dev_priv))
+		intel_de_write(dev_priv, FDI_RX_CHICKEN(pipe),
+			       FDI_RX_PHASE_SYNC_POINTER_OVR);
+
+	/* still set train pattern 1 */
+	reg = FDI_TX_CTL(pipe);
+	temp = intel_de_read(dev_priv, reg);
+	temp &= ~FDI_LINK_TRAIN_NONE;
+	temp |= FDI_LINK_TRAIN_PATTERN_1;
+	intel_de_write(dev_priv, reg, temp);
+
+	reg = FDI_RX_CTL(pipe);
+	temp = intel_de_read(dev_priv, reg);
+	if (HAS_PCH_CPT(dev_priv)) {
+		temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
+		temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
+	} else {
+		temp &= ~FDI_LINK_TRAIN_NONE;
+		temp |= FDI_LINK_TRAIN_PATTERN_1;
+	}
+	/* BPC in FDI rx is consistent with that in PIPECONF */
+	temp &= ~(0x07 << 16);
+	temp |= (intel_de_read(dev_priv, PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
+	intel_de_write(dev_priv, reg, temp);
+
+	intel_de_posting_read(dev_priv, reg);
+	udelay(100);
+}
+
+static const struct intel_fdi_funcs ilk_funcs = {
+	.fdi_link_train = ilk_fdi_link_train,
+};
+
+static const struct intel_fdi_funcs gen6_funcs = {
+	.fdi_link_train = gen6_fdi_link_train,
+};
+
+static const struct intel_fdi_funcs ivb_funcs = {
+	.fdi_link_train = ivb_manual_fdi_link_train,
+};
+
+void
+intel_fdi_init_hook(struct drm_i915_private *dev_priv)
+{
+	if (IS_IRONLAKE(dev_priv)) {
+		dev_priv->display.funcs.fdi = &ilk_funcs;
+	} else if (IS_SANDYBRIDGE(dev_priv)) {
+		dev_priv->display.funcs.fdi = &gen6_funcs;
+	} else if (IS_IVYBRIDGE(dev_priv)) {
+		/* FIXME: detect B0+ stepping and use auto training */
+		dev_priv->display.funcs.fdi = &ivb_funcs;
+	}
+}
diff --git a/drivers/gpu/drm/i915/display/intel_fdi.h b/drivers/gpu/drm/i915/display/intel_fdi.h
new file mode 100644
index 000000000..1cdb86172
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_fdi.h
@@ -0,0 +1,40 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#ifndef _INTEL_FDI_H_
+#define _INTEL_FDI_H_
+
+enum pipe;
+struct drm_i915_private;
+struct intel_crtc;
+struct intel_crtc_state;
+struct intel_encoder;
+
+int intel_fdi_link_freq(struct drm_i915_private *i915,
+			const struct intel_crtc_state *pipe_config);
+int ilk_fdi_compute_config(struct intel_crtc *intel_crtc,
+			   struct intel_crtc_state *pipe_config);
+void intel_fdi_normal_train(struct intel_crtc *crtc);
+void ilk_fdi_disable(struct intel_crtc *crtc);
+void ilk_fdi_pll_disable(struct intel_crtc *intel_crtc);
+void ilk_fdi_pll_enable(const struct intel_crtc_state *crtc_state);
+void intel_fdi_init_hook(struct drm_i915_private *dev_priv);
+void hsw_fdi_link_train(struct intel_encoder *encoder,
+			const struct intel_crtc_state *crtc_state);
+void hsw_fdi_disable(struct intel_encoder *encoder);
+void intel_fdi_pll_freq_update(struct drm_i915_private *i915);
+
+void intel_fdi_link_train(struct intel_crtc *crtc,
+			  const struct intel_crtc_state *crtc_state);
+
+void assert_fdi_tx_enabled(struct drm_i915_private *i915, enum pipe pipe);
+void assert_fdi_tx_disabled(struct drm_i915_private *i915, enum pipe pipe);
+void assert_fdi_rx_enabled(struct drm_i915_private *i915, enum pipe pipe);
+void assert_fdi_rx_disabled(struct drm_i915_private *i915, enum pipe pipe);
+void assert_fdi_tx_pll_enabled(struct drm_i915_private *i915, enum pipe pipe);
+void assert_fdi_rx_pll_enabled(struct drm_i915_private *i915, enum pipe pipe);
+void assert_fdi_rx_pll_disabled(struct drm_i915_private *i915, enum pipe pipe);
+
+#endif
diff --git a/drivers/gpu/drm/i915/display/intel_fifo_underrun.c b/drivers/gpu/drm/i915/display/intel_fifo_underrun.c
new file mode 100644
index 000000000..d636d21fa
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_fifo_underrun.c
@@ -0,0 +1,511 @@
+/*
+ * Copyright © 2014 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Daniel Vetter <daniel.vetter@ffwll.ch>
+ *
+ */
+
+#include "i915_drv.h"
+#include "intel_de.h"
+#include "intel_display_trace.h"
+#include "intel_display_types.h"
+#include "intel_fbc.h"
+#include "intel_fifo_underrun.h"
+
+/**
+ * DOC: fifo underrun handling
+ *
+ * The i915 driver checks for display fifo underruns using the interrupt signals
+ * provided by the hardware. This is enabled by default and fairly useful to
+ * debug display issues, especially watermark settings.
+ *
+ * If an underrun is detected this is logged into dmesg. To avoid flooding logs
+ * and occupying the cpu underrun interrupts are disabled after the first
+ * occurrence until the next modeset on a given pipe.
+ *
+ * Note that underrun detection on gmch platforms is a bit more ugly since there
+ * is no interrupt (despite that the signalling bit is in the PIPESTAT pipe
+ * interrupt register). Also on some other platforms underrun interrupts are
+ * shared, which means that if we detect an underrun we need to disable underrun
+ * reporting on all pipes.
+ *
+ * The code also supports underrun detection on the PCH transcoder.
+ */
+
+static bool ivb_can_enable_err_int(struct drm_device *dev)
+{
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_crtc *crtc;
+	enum pipe pipe;
+
+	lockdep_assert_held(&dev_priv->irq_lock);
+
+	for_each_pipe(dev_priv, pipe) {
+		crtc = intel_crtc_for_pipe(dev_priv, pipe);
+
+		if (crtc->cpu_fifo_underrun_disabled)
+			return false;
+	}
+
+	return true;
+}
+
+static bool cpt_can_enable_serr_int(struct drm_device *dev)
+{
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	enum pipe pipe;
+	struct intel_crtc *crtc;
+
+	lockdep_assert_held(&dev_priv->irq_lock);
+
+	for_each_pipe(dev_priv, pipe) {
+		crtc = intel_crtc_for_pipe(dev_priv, pipe);
+
+		if (crtc->pch_fifo_underrun_disabled)
+			return false;
+	}
+
+	return true;
+}
+
+static void i9xx_check_fifo_underruns(struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	i915_reg_t reg = PIPESTAT(crtc->pipe);
+	u32 enable_mask;
+
+	lockdep_assert_held(&dev_priv->irq_lock);
+
+	if ((intel_de_read(dev_priv, reg) & PIPE_FIFO_UNDERRUN_STATUS) == 0)
+		return;
+
+	enable_mask = i915_pipestat_enable_mask(dev_priv, crtc->pipe);
+	intel_de_write(dev_priv, reg, enable_mask | PIPE_FIFO_UNDERRUN_STATUS);
+	intel_de_posting_read(dev_priv, reg);
+
+	trace_intel_cpu_fifo_underrun(dev_priv, crtc->pipe);
+	drm_err(&dev_priv->drm, "pipe %c underrun\n", pipe_name(crtc->pipe));
+}
+
+static void i9xx_set_fifo_underrun_reporting(struct drm_device *dev,
+					     enum pipe pipe,
+					     bool enable, bool old)
+{
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	i915_reg_t reg = PIPESTAT(pipe);
+
+	lockdep_assert_held(&dev_priv->irq_lock);
+
+	if (enable) {
+		u32 enable_mask = i915_pipestat_enable_mask(dev_priv, pipe);
+
+		intel_de_write(dev_priv, reg,
+			       enable_mask | PIPE_FIFO_UNDERRUN_STATUS);
+		intel_de_posting_read(dev_priv, reg);
+	} else {
+		if (old && intel_de_read(dev_priv, reg) & PIPE_FIFO_UNDERRUN_STATUS)
+			drm_err(&dev_priv->drm, "pipe %c underrun\n",
+				pipe_name(pipe));
+	}
+}
+
+static void ilk_set_fifo_underrun_reporting(struct drm_device *dev,
+					    enum pipe pipe, bool enable)
+{
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	u32 bit = (pipe == PIPE_A) ?
+		DE_PIPEA_FIFO_UNDERRUN : DE_PIPEB_FIFO_UNDERRUN;
+
+	if (enable)
+		ilk_enable_display_irq(dev_priv, bit);
+	else
+		ilk_disable_display_irq(dev_priv, bit);
+}
+
+static void ivb_check_fifo_underruns(struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+	u32 err_int = intel_de_read(dev_priv, GEN7_ERR_INT);
+
+	lockdep_assert_held(&dev_priv->irq_lock);
+
+	if ((err_int & ERR_INT_FIFO_UNDERRUN(pipe)) == 0)
+		return;
+
+	intel_de_write(dev_priv, GEN7_ERR_INT, ERR_INT_FIFO_UNDERRUN(pipe));
+	intel_de_posting_read(dev_priv, GEN7_ERR_INT);
+
+	trace_intel_cpu_fifo_underrun(dev_priv, pipe);
+	drm_err(&dev_priv->drm, "fifo underrun on pipe %c\n", pipe_name(pipe));
+}
+
+static void ivb_set_fifo_underrun_reporting(struct drm_device *dev,
+					    enum pipe pipe, bool enable,
+					    bool old)
+{
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	if (enable) {
+		intel_de_write(dev_priv, GEN7_ERR_INT,
+			       ERR_INT_FIFO_UNDERRUN(pipe));
+
+		if (!ivb_can_enable_err_int(dev))
+			return;
+
+		ilk_enable_display_irq(dev_priv, DE_ERR_INT_IVB);
+	} else {
+		ilk_disable_display_irq(dev_priv, DE_ERR_INT_IVB);
+
+		if (old &&
+		    intel_de_read(dev_priv, GEN7_ERR_INT) & ERR_INT_FIFO_UNDERRUN(pipe)) {
+			drm_err(&dev_priv->drm,
+				"uncleared fifo underrun on pipe %c\n",
+				pipe_name(pipe));
+		}
+	}
+}
+
+static u32
+icl_pipe_status_underrun_mask(struct drm_i915_private *dev_priv)
+{
+	u32 mask = PIPE_STATUS_UNDERRUN;
+
+	if (DISPLAY_VER(dev_priv) >= 13)
+		mask |= PIPE_STATUS_SOFT_UNDERRUN_XELPD |
+			PIPE_STATUS_HARD_UNDERRUN_XELPD |
+			PIPE_STATUS_PORT_UNDERRUN_XELPD;
+
+	return mask;
+}
+
+static void bdw_set_fifo_underrun_reporting(struct drm_device *dev,
+					    enum pipe pipe, bool enable)
+{
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	u32 mask = gen8_de_pipe_underrun_mask(dev_priv);
+
+	if (enable) {
+		if (DISPLAY_VER(dev_priv) >= 11)
+			intel_de_write(dev_priv, ICL_PIPESTATUS(pipe),
+				       icl_pipe_status_underrun_mask(dev_priv));
+
+		bdw_enable_pipe_irq(dev_priv, pipe, mask);
+	} else {
+		bdw_disable_pipe_irq(dev_priv, pipe, mask);
+	}
+}
+
+static void ibx_set_fifo_underrun_reporting(struct drm_device *dev,
+					    enum pipe pch_transcoder,
+					    bool enable)
+{
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	u32 bit = (pch_transcoder == PIPE_A) ?
+		SDE_TRANSA_FIFO_UNDER : SDE_TRANSB_FIFO_UNDER;
+
+	if (enable)
+		ibx_enable_display_interrupt(dev_priv, bit);
+	else
+		ibx_disable_display_interrupt(dev_priv, bit);
+}
+
+static void cpt_check_pch_fifo_underruns(struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pch_transcoder = crtc->pipe;
+	u32 serr_int = intel_de_read(dev_priv, SERR_INT);
+
+	lockdep_assert_held(&dev_priv->irq_lock);
+
+	if ((serr_int & SERR_INT_TRANS_FIFO_UNDERRUN(pch_transcoder)) == 0)
+		return;
+
+	intel_de_write(dev_priv, SERR_INT,
+		       SERR_INT_TRANS_FIFO_UNDERRUN(pch_transcoder));
+	intel_de_posting_read(dev_priv, SERR_INT);
+
+	trace_intel_pch_fifo_underrun(dev_priv, pch_transcoder);
+	drm_err(&dev_priv->drm, "pch fifo underrun on pch transcoder %c\n",
+		pipe_name(pch_transcoder));
+}
+
+static void cpt_set_fifo_underrun_reporting(struct drm_device *dev,
+					    enum pipe pch_transcoder,
+					    bool enable, bool old)
+{
+	struct drm_i915_private *dev_priv = to_i915(dev);
+
+	if (enable) {
+		intel_de_write(dev_priv, SERR_INT,
+			       SERR_INT_TRANS_FIFO_UNDERRUN(pch_transcoder));
+
+		if (!cpt_can_enable_serr_int(dev))
+			return;
+
+		ibx_enable_display_interrupt(dev_priv, SDE_ERROR_CPT);
+	} else {
+		ibx_disable_display_interrupt(dev_priv, SDE_ERROR_CPT);
+
+		if (old && intel_de_read(dev_priv, SERR_INT) &
+		    SERR_INT_TRANS_FIFO_UNDERRUN(pch_transcoder)) {
+			drm_err(&dev_priv->drm,
+				"uncleared pch fifo underrun on pch transcoder %c\n",
+				pipe_name(pch_transcoder));
+		}
+	}
+}
+
+static bool __intel_set_cpu_fifo_underrun_reporting(struct drm_device *dev,
+						    enum pipe pipe, bool enable)
+{
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_crtc *crtc = intel_crtc_for_pipe(dev_priv, pipe);
+	bool old;
+
+	lockdep_assert_held(&dev_priv->irq_lock);
+
+	old = !crtc->cpu_fifo_underrun_disabled;
+	crtc->cpu_fifo_underrun_disabled = !enable;
+
+	if (HAS_GMCH(dev_priv))
+		i9xx_set_fifo_underrun_reporting(dev, pipe, enable, old);
+	else if (IS_IRONLAKE(dev_priv) || IS_SANDYBRIDGE(dev_priv))
+		ilk_set_fifo_underrun_reporting(dev, pipe, enable);
+	else if (DISPLAY_VER(dev_priv) == 7)
+		ivb_set_fifo_underrun_reporting(dev, pipe, enable, old);
+	else if (DISPLAY_VER(dev_priv) >= 8)
+		bdw_set_fifo_underrun_reporting(dev, pipe, enable);
+
+	return old;
+}
+
+/**
+ * intel_set_cpu_fifo_underrun_reporting - set cpu fifo underrrun reporting state
+ * @dev_priv: i915 device instance
+ * @pipe: (CPU) pipe to set state for
+ * @enable: whether underruns should be reported or not
+ *
+ * This function sets the fifo underrun state for @pipe. It is used in the
+ * modeset code to avoid false positives since on many platforms underruns are
+ * expected when disabling or enabling the pipe.
+ *
+ * Notice that on some platforms disabling underrun reports for one pipe
+ * disables for all due to shared interrupts. Actual reporting is still per-pipe
+ * though.
+ *
+ * Returns the previous state of underrun reporting.
+ */
+bool intel_set_cpu_fifo_underrun_reporting(struct drm_i915_private *dev_priv,
+					   enum pipe pipe, bool enable)
+{
+	unsigned long flags;
+	bool ret;
+
+	spin_lock_irqsave(&dev_priv->irq_lock, flags);
+	ret = __intel_set_cpu_fifo_underrun_reporting(&dev_priv->drm, pipe,
+						      enable);
+	spin_unlock_irqrestore(&dev_priv->irq_lock, flags);
+
+	return ret;
+}
+
+/**
+ * intel_set_pch_fifo_underrun_reporting - set PCH fifo underrun reporting state
+ * @dev_priv: i915 device instance
+ * @pch_transcoder: the PCH transcoder (same as pipe on IVB and older)
+ * @enable: whether underruns should be reported or not
+ *
+ * This function makes us disable or enable PCH fifo underruns for a specific
+ * PCH transcoder. Notice that on some PCHs (e.g. CPT/PPT), disabling FIFO
+ * underrun reporting for one transcoder may also disable all the other PCH
+ * error interruts for the other transcoders, due to the fact that there's just
+ * one interrupt mask/enable bit for all the transcoders.
+ *
+ * Returns the previous state of underrun reporting.
+ */
+bool intel_set_pch_fifo_underrun_reporting(struct drm_i915_private *dev_priv,
+					   enum pipe pch_transcoder,
+					   bool enable)
+{
+	struct intel_crtc *crtc =
+		intel_crtc_for_pipe(dev_priv, pch_transcoder);
+	unsigned long flags;
+	bool old;
+
+	/*
+	 * NOTE: Pre-LPT has a fixed cpu pipe -> pch transcoder mapping, but LPT
+	 * has only one pch transcoder A that all pipes can use. To avoid racy
+	 * pch transcoder -> pipe lookups from interrupt code simply store the
+	 * underrun statistics in crtc A. Since we never expose this anywhere
+	 * nor use it outside of the fifo underrun code here using the "wrong"
+	 * crtc on LPT won't cause issues.
+	 */
+
+	spin_lock_irqsave(&dev_priv->irq_lock, flags);
+
+	old = !crtc->pch_fifo_underrun_disabled;
+	crtc->pch_fifo_underrun_disabled = !enable;
+
+	if (HAS_PCH_IBX(dev_priv))
+		ibx_set_fifo_underrun_reporting(&dev_priv->drm,
+						pch_transcoder,
+						enable);
+	else
+		cpt_set_fifo_underrun_reporting(&dev_priv->drm,
+						pch_transcoder,
+						enable, old);
+
+	spin_unlock_irqrestore(&dev_priv->irq_lock, flags);
+	return old;
+}
+
+/**
+ * intel_cpu_fifo_underrun_irq_handler - handle CPU fifo underrun interrupt
+ * @dev_priv: i915 device instance
+ * @pipe: (CPU) pipe to set state for
+ *
+ * This handles a CPU fifo underrun interrupt, generating an underrun warning
+ * into dmesg if underrun reporting is enabled and then disables the underrun
+ * interrupt to avoid an irq storm.
+ */
+void intel_cpu_fifo_underrun_irq_handler(struct drm_i915_private *dev_priv,
+					 enum pipe pipe)
+{
+	struct intel_crtc *crtc = intel_crtc_for_pipe(dev_priv, pipe);
+	u32 underruns = 0;
+
+	/* We may be called too early in init, thanks BIOS! */
+	if (crtc == NULL)
+		return;
+
+	/* GMCH can't disable fifo underruns, filter them. */
+	if (HAS_GMCH(dev_priv) &&
+	    crtc->cpu_fifo_underrun_disabled)
+		return;
+
+	/*
+	 * Starting with display version 11, the PIPE_STAT register records
+	 * whether an underrun has happened, and on XELPD+, it will also record
+	 * whether the underrun was soft/hard and whether it was triggered by
+	 * the downstream port logic.  We should clear these bits (which use
+	 * write-1-to-clear logic) too.
+	 *
+	 * Note that although the IIR gives us the same underrun and soft/hard
+	 * information, PIPE_STAT is the only place we can find out whether
+	 * the underrun was caused by the downstream port.
+	 */
+	if (DISPLAY_VER(dev_priv) >= 11) {
+		underruns = intel_de_read(dev_priv, ICL_PIPESTATUS(pipe)) &
+			icl_pipe_status_underrun_mask(dev_priv);
+		intel_de_write(dev_priv, ICL_PIPESTATUS(pipe), underruns);
+	}
+
+	if (intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false)) {
+		trace_intel_cpu_fifo_underrun(dev_priv, pipe);
+
+		if (DISPLAY_VER(dev_priv) >= 11)
+			drm_err(&dev_priv->drm, "CPU pipe %c FIFO underrun: %s%s%s%s\n",
+				pipe_name(pipe),
+				underruns & PIPE_STATUS_SOFT_UNDERRUN_XELPD ? "soft," : "",
+				underruns & PIPE_STATUS_HARD_UNDERRUN_XELPD ? "hard," : "",
+				underruns & PIPE_STATUS_PORT_UNDERRUN_XELPD ? "port," : "",
+				underruns & PIPE_STATUS_UNDERRUN ? "transcoder," : "");
+		else
+			drm_err(&dev_priv->drm, "CPU pipe %c FIFO underrun\n", pipe_name(pipe));
+	}
+
+	intel_fbc_handle_fifo_underrun_irq(dev_priv);
+}
+
+/**
+ * intel_pch_fifo_underrun_irq_handler - handle PCH fifo underrun interrupt
+ * @dev_priv: i915 device instance
+ * @pch_transcoder: the PCH transcoder (same as pipe on IVB and older)
+ *
+ * This handles a PCH fifo underrun interrupt, generating an underrun warning
+ * into dmesg if underrun reporting is enabled and then disables the underrun
+ * interrupt to avoid an irq storm.
+ */
+void intel_pch_fifo_underrun_irq_handler(struct drm_i915_private *dev_priv,
+					 enum pipe pch_transcoder)
+{
+	if (intel_set_pch_fifo_underrun_reporting(dev_priv, pch_transcoder,
+						  false)) {
+		trace_intel_pch_fifo_underrun(dev_priv, pch_transcoder);
+		drm_err(&dev_priv->drm, "PCH transcoder %c FIFO underrun\n",
+			pipe_name(pch_transcoder));
+	}
+}
+
+/**
+ * intel_check_cpu_fifo_underruns - check for CPU fifo underruns immediately
+ * @dev_priv: i915 device instance
+ *
+ * Check for CPU fifo underruns immediately. Useful on IVB/HSW where the shared
+ * error interrupt may have been disabled, and so CPU fifo underruns won't
+ * necessarily raise an interrupt, and on GMCH platforms where underruns never
+ * raise an interrupt.
+ */
+void intel_check_cpu_fifo_underruns(struct drm_i915_private *dev_priv)
+{
+	struct intel_crtc *crtc;
+
+	spin_lock_irq(&dev_priv->irq_lock);
+
+	for_each_intel_crtc(&dev_priv->drm, crtc) {
+		if (crtc->cpu_fifo_underrun_disabled)
+			continue;
+
+		if (HAS_GMCH(dev_priv))
+			i9xx_check_fifo_underruns(crtc);
+		else if (DISPLAY_VER(dev_priv) == 7)
+			ivb_check_fifo_underruns(crtc);
+	}
+
+	spin_unlock_irq(&dev_priv->irq_lock);
+}
+
+/**
+ * intel_check_pch_fifo_underruns - check for PCH fifo underruns immediately
+ * @dev_priv: i915 device instance
+ *
+ * Check for PCH fifo underruns immediately. Useful on CPT/PPT where the shared
+ * error interrupt may have been disabled, and so PCH fifo underruns won't
+ * necessarily raise an interrupt.
+ */
+void intel_check_pch_fifo_underruns(struct drm_i915_private *dev_priv)
+{
+	struct intel_crtc *crtc;
+
+	spin_lock_irq(&dev_priv->irq_lock);
+
+	for_each_intel_crtc(&dev_priv->drm, crtc) {
+		if (crtc->pch_fifo_underrun_disabled)
+			continue;
+
+		if (HAS_PCH_CPT(dev_priv))
+			cpt_check_pch_fifo_underruns(crtc);
+	}
+
+	spin_unlock_irq(&dev_priv->irq_lock);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_fifo_underrun.h b/drivers/gpu/drm/i915/display/intel_fifo_underrun.h
new file mode 100644
index 000000000..e04f22ac1
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_fifo_underrun.h
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_FIFO_UNDERRUN_H__
+#define __INTEL_FIFO_UNDERRUN_H__
+
+#include <linux/types.h>
+
+#include "intel_display.h"
+
+struct drm_i915_private;
+
+bool intel_set_cpu_fifo_underrun_reporting(struct drm_i915_private *dev_priv,
+					   enum pipe pipe, bool enable);
+bool intel_set_pch_fifo_underrun_reporting(struct drm_i915_private *dev_priv,
+					   enum pipe pch_transcoder,
+					   bool enable);
+void intel_cpu_fifo_underrun_irq_handler(struct drm_i915_private *dev_priv,
+					 enum pipe pipe);
+void intel_pch_fifo_underrun_irq_handler(struct drm_i915_private *dev_priv,
+					 enum pipe pch_transcoder);
+void intel_check_cpu_fifo_underruns(struct drm_i915_private *dev_priv);
+void intel_check_pch_fifo_underruns(struct drm_i915_private *dev_priv);
+
+#endif /* __INTEL_FIFO_UNDERRUN_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_frontbuffer.c b/drivers/gpu/drm/i915/display/intel_frontbuffer.c
new file mode 100644
index 000000000..d80e3e8a9
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_frontbuffer.c
@@ -0,0 +1,328 @@
+/*
+ * Copyright © 2014 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *	Daniel Vetter <daniel.vetter@ffwll.ch>
+ */
+
+/**
+ * DOC: frontbuffer tracking
+ *
+ * Many features require us to track changes to the currently active
+ * frontbuffer, especially rendering targeted at the frontbuffer.
+ *
+ * To be able to do so we track frontbuffers using a bitmask for all possible
+ * frontbuffer slots through intel_frontbuffer_track(). The functions in this
+ * file are then called when the contents of the frontbuffer are invalidated,
+ * when frontbuffer rendering has stopped again to flush out all the changes
+ * and when the frontbuffer is exchanged with a flip. Subsystems interested in
+ * frontbuffer changes (e.g. PSR, FBC, DRRS) should directly put their callbacks
+ * into the relevant places and filter for the frontbuffer slots that they are
+ * interested int.
+ *
+ * On a high level there are two types of powersaving features. The first one
+ * work like a special cache (FBC and PSR) and are interested when they should
+ * stop caching and when to restart caching. This is done by placing callbacks
+ * into the invalidate and the flush functions: At invalidate the caching must
+ * be stopped and at flush time it can be restarted. And maybe they need to know
+ * when the frontbuffer changes (e.g. when the hw doesn't initiate an invalidate
+ * and flush on its own) which can be achieved with placing callbacks into the
+ * flip functions.
+ *
+ * The other type of display power saving feature only cares about busyness
+ * (e.g. DRRS). In that case all three (invalidate, flush and flip) indicate
+ * busyness. There is no direct way to detect idleness. Instead an idle timer
+ * work delayed work should be started from the flush and flip functions and
+ * cancelled as soon as busyness is detected.
+ */
+
+#include "i915_drv.h"
+#include "intel_display_trace.h"
+#include "intel_display_types.h"
+#include "intel_dp.h"
+#include "intel_drrs.h"
+#include "intel_fbc.h"
+#include "intel_frontbuffer.h"
+#include "intel_psr.h"
+
+/**
+ * frontbuffer_flush - flush frontbuffer
+ * @i915: i915 device
+ * @frontbuffer_bits: frontbuffer plane tracking bits
+ * @origin: which operation caused the flush
+ *
+ * This function gets called every time rendering on the given planes has
+ * completed and frontbuffer caching can be started again. Flushes will get
+ * delayed if they're blocked by some outstanding asynchronous rendering.
+ *
+ * Can be called without any locks held.
+ */
+static void frontbuffer_flush(struct drm_i915_private *i915,
+			      unsigned int frontbuffer_bits,
+			      enum fb_op_origin origin)
+{
+	/* Delay flushing when rings are still busy.*/
+	spin_lock(&i915->display.fb_tracking.lock);
+	frontbuffer_bits &= ~i915->display.fb_tracking.busy_bits;
+	spin_unlock(&i915->display.fb_tracking.lock);
+
+	if (!frontbuffer_bits)
+		return;
+
+	trace_intel_frontbuffer_flush(frontbuffer_bits, origin);
+
+	might_sleep();
+	intel_drrs_flush(i915, frontbuffer_bits);
+	intel_psr_flush(i915, frontbuffer_bits, origin);
+	intel_fbc_flush(i915, frontbuffer_bits, origin);
+}
+
+/**
+ * intel_frontbuffer_flip_prepare - prepare asynchronous frontbuffer flip
+ * @i915: i915 device
+ * @frontbuffer_bits: frontbuffer plane tracking bits
+ *
+ * This function gets called after scheduling a flip on @obj. The actual
+ * frontbuffer flushing will be delayed until completion is signalled with
+ * intel_frontbuffer_flip_complete. If an invalidate happens in between this
+ * flush will be cancelled.
+ *
+ * Can be called without any locks held.
+ */
+void intel_frontbuffer_flip_prepare(struct drm_i915_private *i915,
+				    unsigned frontbuffer_bits)
+{
+	spin_lock(&i915->display.fb_tracking.lock);
+	i915->display.fb_tracking.flip_bits |= frontbuffer_bits;
+	/* Remove stale busy bits due to the old buffer. */
+	i915->display.fb_tracking.busy_bits &= ~frontbuffer_bits;
+	spin_unlock(&i915->display.fb_tracking.lock);
+}
+
+/**
+ * intel_frontbuffer_flip_complete - complete asynchronous frontbuffer flip
+ * @i915: i915 device
+ * @frontbuffer_bits: frontbuffer plane tracking bits
+ *
+ * This function gets called after the flip has been latched and will complete
+ * on the next vblank. It will execute the flush if it hasn't been cancelled yet.
+ *
+ * Can be called without any locks held.
+ */
+void intel_frontbuffer_flip_complete(struct drm_i915_private *i915,
+				     unsigned frontbuffer_bits)
+{
+	spin_lock(&i915->display.fb_tracking.lock);
+	/* Mask any cancelled flips. */
+	frontbuffer_bits &= i915->display.fb_tracking.flip_bits;
+	i915->display.fb_tracking.flip_bits &= ~frontbuffer_bits;
+	spin_unlock(&i915->display.fb_tracking.lock);
+
+	if (frontbuffer_bits)
+		frontbuffer_flush(i915, frontbuffer_bits, ORIGIN_FLIP);
+}
+
+/**
+ * intel_frontbuffer_flip - synchronous frontbuffer flip
+ * @i915: i915 device
+ * @frontbuffer_bits: frontbuffer plane tracking bits
+ *
+ * This function gets called after scheduling a flip on @obj. This is for
+ * synchronous plane updates which will happen on the next vblank and which will
+ * not get delayed by pending gpu rendering.
+ *
+ * Can be called without any locks held.
+ */
+void intel_frontbuffer_flip(struct drm_i915_private *i915,
+			    unsigned frontbuffer_bits)
+{
+	spin_lock(&i915->display.fb_tracking.lock);
+	/* Remove stale busy bits due to the old buffer. */
+	i915->display.fb_tracking.busy_bits &= ~frontbuffer_bits;
+	spin_unlock(&i915->display.fb_tracking.lock);
+
+	frontbuffer_flush(i915, frontbuffer_bits, ORIGIN_FLIP);
+}
+
+void __intel_fb_invalidate(struct intel_frontbuffer *front,
+			   enum fb_op_origin origin,
+			   unsigned int frontbuffer_bits)
+{
+	struct drm_i915_private *i915 = to_i915(front->obj->base.dev);
+
+	if (origin == ORIGIN_CS) {
+		spin_lock(&i915->display.fb_tracking.lock);
+		i915->display.fb_tracking.busy_bits |= frontbuffer_bits;
+		i915->display.fb_tracking.flip_bits &= ~frontbuffer_bits;
+		spin_unlock(&i915->display.fb_tracking.lock);
+	}
+
+	trace_intel_frontbuffer_invalidate(frontbuffer_bits, origin);
+
+	might_sleep();
+	intel_psr_invalidate(i915, frontbuffer_bits, origin);
+	intel_drrs_invalidate(i915, frontbuffer_bits);
+	intel_fbc_invalidate(i915, frontbuffer_bits, origin);
+}
+
+void __intel_fb_flush(struct intel_frontbuffer *front,
+		      enum fb_op_origin origin,
+		      unsigned int frontbuffer_bits)
+{
+	struct drm_i915_private *i915 = to_i915(front->obj->base.dev);
+
+	if (origin == ORIGIN_CS) {
+		spin_lock(&i915->display.fb_tracking.lock);
+		/* Filter out new bits since rendering started. */
+		frontbuffer_bits &= i915->display.fb_tracking.busy_bits;
+		i915->display.fb_tracking.busy_bits &= ~frontbuffer_bits;
+		spin_unlock(&i915->display.fb_tracking.lock);
+	}
+
+	if (frontbuffer_bits)
+		frontbuffer_flush(i915, frontbuffer_bits, origin);
+}
+
+static int frontbuffer_active(struct i915_active *ref)
+{
+	struct intel_frontbuffer *front =
+		container_of(ref, typeof(*front), write);
+
+	kref_get(&front->ref);
+	return 0;
+}
+
+static void frontbuffer_retire(struct i915_active *ref)
+{
+	struct intel_frontbuffer *front =
+		container_of(ref, typeof(*front), write);
+
+	intel_frontbuffer_flush(front, ORIGIN_CS);
+	intel_frontbuffer_put(front);
+}
+
+static void frontbuffer_release(struct kref *ref)
+	__releases(&to_i915(front->obj->base.dev)->display.fb_tracking.lock)
+{
+	struct intel_frontbuffer *front =
+		container_of(ref, typeof(*front), ref);
+	struct drm_i915_gem_object *obj = front->obj;
+	struct i915_vma *vma;
+
+	drm_WARN_ON(obj->base.dev, atomic_read(&front->bits));
+
+	spin_lock(&obj->vma.lock);
+	for_each_ggtt_vma(vma, obj) {
+		i915_vma_clear_scanout(vma);
+		vma->display_alignment = I915_GTT_MIN_ALIGNMENT;
+	}
+	spin_unlock(&obj->vma.lock);
+
+	RCU_INIT_POINTER(obj->frontbuffer, NULL);
+	spin_unlock(&to_i915(obj->base.dev)->display.fb_tracking.lock);
+
+	i915_active_fini(&front->write);
+
+	i915_gem_object_put(obj);
+	kfree_rcu(front, rcu);
+}
+
+struct intel_frontbuffer *
+intel_frontbuffer_get(struct drm_i915_gem_object *obj)
+{
+	struct drm_i915_private *i915 = to_i915(obj->base.dev);
+	struct intel_frontbuffer *front;
+
+	front = __intel_frontbuffer_get(obj);
+	if (front)
+		return front;
+
+	front = kmalloc(sizeof(*front), GFP_KERNEL);
+	if (!front)
+		return NULL;
+
+	front->obj = obj;
+	kref_init(&front->ref);
+	atomic_set(&front->bits, 0);
+	i915_active_init(&front->write,
+			 frontbuffer_active,
+			 frontbuffer_retire,
+			 I915_ACTIVE_RETIRE_SLEEPS);
+
+	spin_lock(&i915->display.fb_tracking.lock);
+	if (rcu_access_pointer(obj->frontbuffer)) {
+		kfree(front);
+		front = rcu_dereference_protected(obj->frontbuffer, true);
+		kref_get(&front->ref);
+	} else {
+		i915_gem_object_get(obj);
+		rcu_assign_pointer(obj->frontbuffer, front);
+	}
+	spin_unlock(&i915->display.fb_tracking.lock);
+
+	return front;
+}
+
+void intel_frontbuffer_put(struct intel_frontbuffer *front)
+{
+	kref_put_lock(&front->ref,
+		      frontbuffer_release,
+		      &to_i915(front->obj->base.dev)->display.fb_tracking.lock);
+}
+
+/**
+ * intel_frontbuffer_track - update frontbuffer tracking
+ * @old: current buffer for the frontbuffer slots
+ * @new: new buffer for the frontbuffer slots
+ * @frontbuffer_bits: bitmask of frontbuffer slots
+ *
+ * This updates the frontbuffer tracking bits @frontbuffer_bits by clearing them
+ * from @old and setting them in @new. Both @old and @new can be NULL.
+ */
+void intel_frontbuffer_track(struct intel_frontbuffer *old,
+			     struct intel_frontbuffer *new,
+			     unsigned int frontbuffer_bits)
+{
+	/*
+	 * Control of individual bits within the mask are guarded by
+	 * the owning plane->mutex, i.e. we can never see concurrent
+	 * manipulation of individual bits. But since the bitfield as a whole
+	 * is updated using RMW, we need to use atomics in order to update
+	 * the bits.
+	 */
+	BUILD_BUG_ON(INTEL_FRONTBUFFER_BITS_PER_PIPE * I915_MAX_PIPES >
+		     BITS_PER_TYPE(atomic_t));
+	BUILD_BUG_ON(INTEL_FRONTBUFFER_BITS_PER_PIPE * I915_MAX_PIPES > 32);
+	BUILD_BUG_ON(I915_MAX_PLANES > INTEL_FRONTBUFFER_BITS_PER_PIPE);
+
+	if (old) {
+		drm_WARN_ON(old->obj->base.dev,
+			    !(atomic_read(&old->bits) & frontbuffer_bits));
+		atomic_andnot(frontbuffer_bits, &old->bits);
+	}
+
+	if (new) {
+		drm_WARN_ON(new->obj->base.dev,
+			    atomic_read(&new->bits) & frontbuffer_bits);
+		atomic_or(frontbuffer_bits, &new->bits);
+	}
+}
diff --git a/drivers/gpu/drm/i915/display/intel_frontbuffer.h b/drivers/gpu/drm/i915/display/intel_frontbuffer.h
new file mode 100644
index 000000000..3c474ed93
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_frontbuffer.h
@@ -0,0 +1,170 @@
+/*
+ * Copyright (c) 2014-2016 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#ifndef __INTEL_FRONTBUFFER_H__
+#define __INTEL_FRONTBUFFER_H__
+
+#include <linux/atomic.h>
+#include <linux/bits.h>
+#include <linux/kref.h>
+
+#include "gem/i915_gem_object_types.h"
+#include "i915_active_types.h"
+
+struct drm_i915_private;
+
+enum fb_op_origin {
+	ORIGIN_CPU = 0,
+	ORIGIN_CS,
+	ORIGIN_FLIP,
+	ORIGIN_DIRTYFB,
+	ORIGIN_CURSOR_UPDATE,
+};
+
+struct intel_frontbuffer {
+	struct kref ref;
+	atomic_t bits;
+	struct i915_active write;
+	struct drm_i915_gem_object *obj;
+	struct rcu_head rcu;
+};
+
+/*
+ * Frontbuffer tracking bits. Set in obj->frontbuffer_bits while a gem bo is
+ * considered to be the frontbuffer for the given plane interface-wise. This
+ * doesn't mean that the hw necessarily already scans it out, but that any
+ * rendering (by the cpu or gpu) will land in the frontbuffer eventually.
+ *
+ * We have one bit per pipe and per scanout plane type.
+ */
+#define INTEL_FRONTBUFFER_BITS_PER_PIPE 8
+#define INTEL_FRONTBUFFER(pipe, plane_id) \
+	BIT((plane_id) + INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe));
+#define INTEL_FRONTBUFFER_OVERLAY(pipe) \
+	BIT(INTEL_FRONTBUFFER_BITS_PER_PIPE - 1 + INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))
+#define INTEL_FRONTBUFFER_ALL_MASK(pipe) \
+	GENMASK(INTEL_FRONTBUFFER_BITS_PER_PIPE * ((pipe) + 1) - 1,	\
+		INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))
+
+void intel_frontbuffer_flip_prepare(struct drm_i915_private *i915,
+				    unsigned frontbuffer_bits);
+void intel_frontbuffer_flip_complete(struct drm_i915_private *i915,
+				     unsigned frontbuffer_bits);
+void intel_frontbuffer_flip(struct drm_i915_private *i915,
+			    unsigned frontbuffer_bits);
+
+void intel_frontbuffer_put(struct intel_frontbuffer *front);
+
+static inline struct intel_frontbuffer *
+__intel_frontbuffer_get(const struct drm_i915_gem_object *obj)
+{
+	struct intel_frontbuffer *front;
+
+	if (likely(!rcu_access_pointer(obj->frontbuffer)))
+		return NULL;
+
+	rcu_read_lock();
+	do {
+		front = rcu_dereference(obj->frontbuffer);
+		if (!front)
+			break;
+
+		if (unlikely(!kref_get_unless_zero(&front->ref)))
+			continue;
+
+		if (likely(front == rcu_access_pointer(obj->frontbuffer)))
+			break;
+
+		intel_frontbuffer_put(front);
+	} while (1);
+	rcu_read_unlock();
+
+	return front;
+}
+
+struct intel_frontbuffer *
+intel_frontbuffer_get(struct drm_i915_gem_object *obj);
+
+void __intel_fb_invalidate(struct intel_frontbuffer *front,
+			   enum fb_op_origin origin,
+			   unsigned int frontbuffer_bits);
+
+/**
+ * intel_frontbuffer_invalidate - invalidate frontbuffer object
+ * @front: GEM object to invalidate
+ * @origin: which operation caused the invalidation
+ *
+ * This function gets called every time rendering on the given object starts and
+ * frontbuffer caching (fbc, low refresh rate for DRRS, panel self refresh) must
+ * be invalidated. For ORIGIN_CS any subsequent invalidation will be delayed
+ * until the rendering completes or a flip on this frontbuffer plane is
+ * scheduled.
+ */
+static inline bool intel_frontbuffer_invalidate(struct intel_frontbuffer *front,
+						enum fb_op_origin origin)
+{
+	unsigned int frontbuffer_bits;
+
+	if (!front)
+		return false;
+
+	frontbuffer_bits = atomic_read(&front->bits);
+	if (!frontbuffer_bits)
+		return false;
+
+	__intel_fb_invalidate(front, origin, frontbuffer_bits);
+	return true;
+}
+
+void __intel_fb_flush(struct intel_frontbuffer *front,
+		      enum fb_op_origin origin,
+		      unsigned int frontbuffer_bits);
+
+/**
+ * intel_frontbuffer_flush - flush frontbuffer object
+ * @front: GEM object to flush
+ * @origin: which operation caused the flush
+ *
+ * This function gets called every time rendering on the given object has
+ * completed and frontbuffer caching can be started again.
+ */
+static inline void intel_frontbuffer_flush(struct intel_frontbuffer *front,
+					   enum fb_op_origin origin)
+{
+	unsigned int frontbuffer_bits;
+
+	if (!front)
+		return;
+
+	frontbuffer_bits = atomic_read(&front->bits);
+	if (!frontbuffer_bits)
+		return;
+
+	__intel_fb_flush(front, origin, frontbuffer_bits);
+}
+
+void intel_frontbuffer_track(struct intel_frontbuffer *old,
+			     struct intel_frontbuffer *new,
+			     unsigned int frontbuffer_bits);
+
+#endif /* __INTEL_FRONTBUFFER_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_global_state.c b/drivers/gpu/drm/i915/display/intel_global_state.c
new file mode 100644
index 000000000..7a19215ad
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_global_state.c
@@ -0,0 +1,257 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#include <linux/string.h>
+
+#include "i915_drv.h"
+#include "intel_atomic.h"
+#include "intel_display_types.h"
+#include "intel_global_state.h"
+
+static void __intel_atomic_global_state_free(struct kref *kref)
+{
+	struct intel_global_state *obj_state =
+		container_of(kref, struct intel_global_state, ref);
+	struct intel_global_obj *obj = obj_state->obj;
+
+	obj->funcs->atomic_destroy_state(obj, obj_state);
+}
+
+static void intel_atomic_global_state_put(struct intel_global_state *obj_state)
+{
+	kref_put(&obj_state->ref, __intel_atomic_global_state_free);
+}
+
+static struct intel_global_state *
+intel_atomic_global_state_get(struct intel_global_state *obj_state)
+{
+	kref_get(&obj_state->ref);
+
+	return obj_state;
+}
+
+void intel_atomic_global_obj_init(struct drm_i915_private *dev_priv,
+				  struct intel_global_obj *obj,
+				  struct intel_global_state *state,
+				  const struct intel_global_state_funcs *funcs)
+{
+	memset(obj, 0, sizeof(*obj));
+
+	state->obj = obj;
+
+	kref_init(&state->ref);
+
+	obj->state = state;
+	obj->funcs = funcs;
+	list_add_tail(&obj->head, &dev_priv->global_obj_list);
+}
+
+void intel_atomic_global_obj_cleanup(struct drm_i915_private *dev_priv)
+{
+	struct intel_global_obj *obj, *next;
+
+	list_for_each_entry_safe(obj, next, &dev_priv->global_obj_list, head) {
+		list_del(&obj->head);
+
+		drm_WARN_ON(&dev_priv->drm, kref_read(&obj->state->ref) != 1);
+		intel_atomic_global_state_put(obj->state);
+	}
+}
+
+static void assert_global_state_write_locked(struct drm_i915_private *dev_priv)
+{
+	struct intel_crtc *crtc;
+
+	for_each_intel_crtc(&dev_priv->drm, crtc)
+		drm_modeset_lock_assert_held(&crtc->base.mutex);
+}
+
+static bool modeset_lock_is_held(struct drm_modeset_acquire_ctx *ctx,
+				 struct drm_modeset_lock *lock)
+{
+	struct drm_modeset_lock *l;
+
+	list_for_each_entry(l, &ctx->locked, head) {
+		if (lock == l)
+			return true;
+	}
+
+	return false;
+}
+
+static void assert_global_state_read_locked(struct intel_atomic_state *state)
+{
+	struct drm_modeset_acquire_ctx *ctx = state->base.acquire_ctx;
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct intel_crtc *crtc;
+
+	for_each_intel_crtc(&dev_priv->drm, crtc) {
+		if (modeset_lock_is_held(ctx, &crtc->base.mutex))
+			return;
+	}
+
+	drm_WARN(&dev_priv->drm, 1, "Global state not read locked\n");
+}
+
+struct intel_global_state *
+intel_atomic_get_global_obj_state(struct intel_atomic_state *state,
+				  struct intel_global_obj *obj)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	int index, num_objs, i;
+	size_t size;
+	struct __intel_global_objs_state *arr;
+	struct intel_global_state *obj_state;
+
+	for (i = 0; i < state->num_global_objs; i++)
+		if (obj == state->global_objs[i].ptr)
+			return state->global_objs[i].state;
+
+	assert_global_state_read_locked(state);
+
+	num_objs = state->num_global_objs + 1;
+	size = sizeof(*state->global_objs) * num_objs;
+	arr = krealloc(state->global_objs, size, GFP_KERNEL);
+	if (!arr)
+		return ERR_PTR(-ENOMEM);
+
+	state->global_objs = arr;
+	index = state->num_global_objs;
+	memset(&state->global_objs[index], 0, sizeof(*state->global_objs));
+
+	obj_state = obj->funcs->atomic_duplicate_state(obj);
+	if (!obj_state)
+		return ERR_PTR(-ENOMEM);
+
+	obj_state->obj = obj;
+	obj_state->changed = false;
+
+	kref_init(&obj_state->ref);
+
+	state->global_objs[index].state = obj_state;
+	state->global_objs[index].old_state =
+		intel_atomic_global_state_get(obj->state);
+	state->global_objs[index].new_state = obj_state;
+	state->global_objs[index].ptr = obj;
+	obj_state->state = state;
+
+	state->num_global_objs = num_objs;
+
+	drm_dbg_atomic(&i915->drm, "Added new global object %p state %p to %p\n",
+		       obj, obj_state, state);
+
+	return obj_state;
+}
+
+struct intel_global_state *
+intel_atomic_get_old_global_obj_state(struct intel_atomic_state *state,
+				      struct intel_global_obj *obj)
+{
+	int i;
+
+	for (i = 0; i < state->num_global_objs; i++)
+		if (obj == state->global_objs[i].ptr)
+			return state->global_objs[i].old_state;
+
+	return NULL;
+}
+
+struct intel_global_state *
+intel_atomic_get_new_global_obj_state(struct intel_atomic_state *state,
+				      struct intel_global_obj *obj)
+{
+	int i;
+
+	for (i = 0; i < state->num_global_objs; i++)
+		if (obj == state->global_objs[i].ptr)
+			return state->global_objs[i].new_state;
+
+	return NULL;
+}
+
+void intel_atomic_swap_global_state(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct intel_global_state *old_obj_state, *new_obj_state;
+	struct intel_global_obj *obj;
+	int i;
+
+	for_each_oldnew_global_obj_in_state(state, obj, old_obj_state,
+					    new_obj_state, i) {
+		drm_WARN_ON(&dev_priv->drm, obj->state != old_obj_state);
+
+		/*
+		 * If the new state wasn't modified (and properly
+		 * locked for write access) we throw it away.
+		 */
+		if (!new_obj_state->changed)
+			continue;
+
+		assert_global_state_write_locked(dev_priv);
+
+		old_obj_state->state = state;
+		new_obj_state->state = NULL;
+
+		state->global_objs[i].state = old_obj_state;
+
+		intel_atomic_global_state_put(obj->state);
+		obj->state = intel_atomic_global_state_get(new_obj_state);
+	}
+}
+
+void intel_atomic_clear_global_state(struct intel_atomic_state *state)
+{
+	int i;
+
+	for (i = 0; i < state->num_global_objs; i++) {
+		intel_atomic_global_state_put(state->global_objs[i].old_state);
+		intel_atomic_global_state_put(state->global_objs[i].new_state);
+
+		state->global_objs[i].ptr = NULL;
+		state->global_objs[i].state = NULL;
+		state->global_objs[i].old_state = NULL;
+		state->global_objs[i].new_state = NULL;
+	}
+	state->num_global_objs = 0;
+}
+
+int intel_atomic_lock_global_state(struct intel_global_state *obj_state)
+{
+	struct intel_atomic_state *state = obj_state->state;
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct intel_crtc *crtc;
+
+	for_each_intel_crtc(&dev_priv->drm, crtc) {
+		int ret;
+
+		ret = drm_modeset_lock(&crtc->base.mutex,
+				       state->base.acquire_ctx);
+		if (ret)
+			return ret;
+	}
+
+	obj_state->changed = true;
+
+	return 0;
+}
+
+int intel_atomic_serialize_global_state(struct intel_global_state *obj_state)
+{
+	struct intel_atomic_state *state = obj_state->state;
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct intel_crtc *crtc;
+
+	for_each_intel_crtc(&dev_priv->drm, crtc) {
+		struct intel_crtc_state *crtc_state;
+
+		crtc_state = intel_atomic_get_crtc_state(&state->base, crtc);
+		if (IS_ERR(crtc_state))
+			return PTR_ERR(crtc_state);
+	}
+
+	obj_state->changed = true;
+
+	return 0;
+}
diff --git a/drivers/gpu/drm/i915/display/intel_global_state.h b/drivers/gpu/drm/i915/display/intel_global_state.h
new file mode 100644
index 000000000..1f16fa307
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_global_state.h
@@ -0,0 +1,90 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#ifndef __INTEL_GLOBAL_STATE_H__
+#define __INTEL_GLOBAL_STATE_H__
+
+#include <linux/kref.h>
+#include <linux/list.h>
+
+struct drm_i915_private;
+struct intel_atomic_state;
+struct intel_global_obj;
+struct intel_global_state;
+
+struct intel_global_state_funcs {
+	struct intel_global_state *(*atomic_duplicate_state)(struct intel_global_obj *obj);
+	void (*atomic_destroy_state)(struct intel_global_obj *obj,
+				     struct intel_global_state *state);
+};
+
+struct intel_global_obj {
+	struct list_head head;
+	struct intel_global_state *state;
+	const struct intel_global_state_funcs *funcs;
+};
+
+#define intel_for_each_global_obj(obj, dev_priv) \
+	list_for_each_entry(obj, &(dev_priv)->global_obj_list, head)
+
+#define for_each_new_global_obj_in_state(__state, obj, new_obj_state, __i) \
+	for ((__i) = 0; \
+	     (__i) < (__state)->num_global_objs && \
+		     ((obj) = (__state)->global_objs[__i].ptr, \
+		      (new_obj_state) = (__state)->global_objs[__i].new_state, 1); \
+	     (__i)++) \
+		for_each_if(obj)
+
+#define for_each_old_global_obj_in_state(__state, obj, new_obj_state, __i) \
+	for ((__i) = 0; \
+	     (__i) < (__state)->num_global_objs && \
+		     ((obj) = (__state)->global_objs[__i].ptr, \
+		      (new_obj_state) = (__state)->global_objs[__i].old_state, 1); \
+	     (__i)++) \
+		for_each_if(obj)
+
+#define for_each_oldnew_global_obj_in_state(__state, obj, old_obj_state, new_obj_state, __i) \
+	for ((__i) = 0; \
+	     (__i) < (__state)->num_global_objs && \
+		     ((obj) = (__state)->global_objs[__i].ptr, \
+		      (old_obj_state) = (__state)->global_objs[__i].old_state, \
+		      (new_obj_state) = (__state)->global_objs[__i].new_state, 1); \
+	     (__i)++) \
+		for_each_if(obj)
+
+struct intel_global_state {
+	struct intel_global_obj *obj;
+	struct intel_atomic_state *state;
+	struct kref ref;
+	bool changed;
+};
+
+struct __intel_global_objs_state {
+	struct intel_global_obj *ptr;
+	struct intel_global_state *state, *old_state, *new_state;
+};
+
+void intel_atomic_global_obj_init(struct drm_i915_private *dev_priv,
+				  struct intel_global_obj *obj,
+				  struct intel_global_state *state,
+				  const struct intel_global_state_funcs *funcs);
+void intel_atomic_global_obj_cleanup(struct drm_i915_private *dev_priv);
+
+struct intel_global_state *
+intel_atomic_get_global_obj_state(struct intel_atomic_state *state,
+				  struct intel_global_obj *obj);
+struct intel_global_state *
+intel_atomic_get_old_global_obj_state(struct intel_atomic_state *state,
+				      struct intel_global_obj *obj);
+struct intel_global_state *
+intel_atomic_get_new_global_obj_state(struct intel_atomic_state *state,
+				      struct intel_global_obj *obj);
+
+void intel_atomic_swap_global_state(struct intel_atomic_state *state);
+void intel_atomic_clear_global_state(struct intel_atomic_state *state);
+int intel_atomic_lock_global_state(struct intel_global_state *obj_state);
+int intel_atomic_serialize_global_state(struct intel_global_state *obj_state);
+
+#endif
diff --git a/drivers/gpu/drm/i915/display/intel_gmbus.c b/drivers/gpu/drm/i915/display/intel_gmbus.c
new file mode 100644
index 000000000..74443f57f
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_gmbus.c
@@ -0,0 +1,1003 @@
+/*
+ * Copyright (c) 2006 Dave Airlie <airlied@linux.ie>
+ * Copyright © 2006-2008,2010 Intel Corporation
+ *   Jesse Barnes <jesse.barnes@intel.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *	Eric Anholt <eric@anholt.net>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include <linux/export.h>
+#include <linux/i2c-algo-bit.h>
+#include <linux/i2c.h>
+
+#include <drm/display/drm_hdcp_helper.h>
+
+#include "i915_drv.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_gmbus.h"
+#include "intel_gmbus_regs.h"
+
+struct intel_gmbus {
+	struct i2c_adapter adapter;
+#define GMBUS_FORCE_BIT_RETRY (1U << 31)
+	u32 force_bit;
+	u32 reg0;
+	i915_reg_t gpio_reg;
+	struct i2c_algo_bit_data bit_algo;
+	struct drm_i915_private *i915;
+};
+
+struct gmbus_pin {
+	const char *name;
+	enum i915_gpio gpio;
+};
+
+/* Map gmbus pin pairs to names and registers. */
+static const struct gmbus_pin gmbus_pins[] = {
+	[GMBUS_PIN_SSC] = { "ssc", GPIOB },
+	[GMBUS_PIN_VGADDC] = { "vga", GPIOA },
+	[GMBUS_PIN_PANEL] = { "panel", GPIOC },
+	[GMBUS_PIN_DPC] = { "dpc", GPIOD },
+	[GMBUS_PIN_DPB] = { "dpb", GPIOE },
+	[GMBUS_PIN_DPD] = { "dpd", GPIOF },
+};
+
+static const struct gmbus_pin gmbus_pins_bdw[] = {
+	[GMBUS_PIN_VGADDC] = { "vga", GPIOA },
+	[GMBUS_PIN_DPC] = { "dpc", GPIOD },
+	[GMBUS_PIN_DPB] = { "dpb", GPIOE },
+	[GMBUS_PIN_DPD] = { "dpd", GPIOF },
+};
+
+static const struct gmbus_pin gmbus_pins_skl[] = {
+	[GMBUS_PIN_DPC] = { "dpc", GPIOD },
+	[GMBUS_PIN_DPB] = { "dpb", GPIOE },
+	[GMBUS_PIN_DPD] = { "dpd", GPIOF },
+};
+
+static const struct gmbus_pin gmbus_pins_bxt[] = {
+	[GMBUS_PIN_1_BXT] = { "dpb", GPIOB },
+	[GMBUS_PIN_2_BXT] = { "dpc", GPIOC },
+	[GMBUS_PIN_3_BXT] = { "misc", GPIOD },
+};
+
+static const struct gmbus_pin gmbus_pins_cnp[] = {
+	[GMBUS_PIN_1_BXT] = { "dpb", GPIOB },
+	[GMBUS_PIN_2_BXT] = { "dpc", GPIOC },
+	[GMBUS_PIN_3_BXT] = { "misc", GPIOD },
+	[GMBUS_PIN_4_CNP] = { "dpd", GPIOE },
+};
+
+static const struct gmbus_pin gmbus_pins_icp[] = {
+	[GMBUS_PIN_1_BXT] = { "dpa", GPIOB },
+	[GMBUS_PIN_2_BXT] = { "dpb", GPIOC },
+	[GMBUS_PIN_3_BXT] = { "dpc", GPIOD },
+	[GMBUS_PIN_9_TC1_ICP] = { "tc1", GPIOJ },
+	[GMBUS_PIN_10_TC2_ICP] = { "tc2", GPIOK },
+	[GMBUS_PIN_11_TC3_ICP] = { "tc3", GPIOL },
+	[GMBUS_PIN_12_TC4_ICP] = { "tc4", GPIOM },
+	[GMBUS_PIN_13_TC5_TGP] = { "tc5", GPION },
+	[GMBUS_PIN_14_TC6_TGP] = { "tc6", GPIOO },
+};
+
+static const struct gmbus_pin gmbus_pins_dg1[] = {
+	[GMBUS_PIN_1_BXT] = { "dpa", GPIOB },
+	[GMBUS_PIN_2_BXT] = { "dpb", GPIOC },
+	[GMBUS_PIN_3_BXT] = { "dpc", GPIOD },
+	[GMBUS_PIN_4_CNP] = { "dpd", GPIOE },
+};
+
+static const struct gmbus_pin gmbus_pins_dg2[] = {
+	[GMBUS_PIN_1_BXT] = { "dpa", GPIOB },
+	[GMBUS_PIN_2_BXT] = { "dpb", GPIOC },
+	[GMBUS_PIN_3_BXT] = { "dpc", GPIOD },
+	[GMBUS_PIN_4_CNP] = { "dpd", GPIOE },
+	[GMBUS_PIN_9_TC1_ICP] = { "tc1", GPIOJ },
+};
+
+static const struct gmbus_pin gmbus_pins_mtp[] = {
+	[GMBUS_PIN_1_BXT] = { "dpa", GPIOB },
+	[GMBUS_PIN_2_BXT] = { "dpb", GPIOC },
+	[GMBUS_PIN_3_BXT] = { "dpc", GPIOD },
+	[GMBUS_PIN_4_CNP] = { "dpd", GPIOE },
+	[GMBUS_PIN_5_MTP] = { "dpe", GPIOF },
+	[GMBUS_PIN_9_TC1_ICP] = { "tc1", GPIOJ },
+	[GMBUS_PIN_10_TC2_ICP] = { "tc2", GPIOK },
+	[GMBUS_PIN_11_TC3_ICP] = { "tc3", GPIOL },
+	[GMBUS_PIN_12_TC4_ICP] = { "tc4", GPIOM },
+};
+
+static const struct gmbus_pin *get_gmbus_pin(struct drm_i915_private *i915,
+					     unsigned int pin)
+{
+	const struct gmbus_pin *pins;
+	size_t size;
+
+	if (INTEL_PCH_TYPE(i915) >= PCH_DG2) {
+		pins = gmbus_pins_dg2;
+		size = ARRAY_SIZE(gmbus_pins_dg2);
+	} else if (INTEL_PCH_TYPE(i915) >= PCH_DG1) {
+		pins = gmbus_pins_dg1;
+		size = ARRAY_SIZE(gmbus_pins_dg1);
+	} else if (INTEL_PCH_TYPE(i915) >= PCH_MTP) {
+		pins = gmbus_pins_mtp;
+		size = ARRAY_SIZE(gmbus_pins_mtp);
+	} else if (INTEL_PCH_TYPE(i915) >= PCH_ICP) {
+		pins = gmbus_pins_icp;
+		size = ARRAY_SIZE(gmbus_pins_icp);
+	} else if (HAS_PCH_CNP(i915)) {
+		pins = gmbus_pins_cnp;
+		size = ARRAY_SIZE(gmbus_pins_cnp);
+	} else if (IS_GEMINILAKE(i915) || IS_BROXTON(i915)) {
+		pins = gmbus_pins_bxt;
+		size = ARRAY_SIZE(gmbus_pins_bxt);
+	} else if (DISPLAY_VER(i915) == 9) {
+		pins = gmbus_pins_skl;
+		size = ARRAY_SIZE(gmbus_pins_skl);
+	} else if (IS_BROADWELL(i915)) {
+		pins = gmbus_pins_bdw;
+		size = ARRAY_SIZE(gmbus_pins_bdw);
+	} else {
+		pins = gmbus_pins;
+		size = ARRAY_SIZE(gmbus_pins);
+	}
+
+	if (pin >= size || !pins[pin].name)
+		return NULL;
+
+	return &pins[pin];
+}
+
+bool intel_gmbus_is_valid_pin(struct drm_i915_private *i915, unsigned int pin)
+{
+	return get_gmbus_pin(i915, pin);
+}
+
+/* Intel GPIO access functions */
+
+#define I2C_RISEFALL_TIME 10
+
+static inline struct intel_gmbus *
+to_intel_gmbus(struct i2c_adapter *i2c)
+{
+	return container_of(i2c, struct intel_gmbus, adapter);
+}
+
+void
+intel_gmbus_reset(struct drm_i915_private *i915)
+{
+	intel_de_write(i915, GMBUS0(i915), 0);
+	intel_de_write(i915, GMBUS4(i915), 0);
+}
+
+static void pnv_gmbus_clock_gating(struct drm_i915_private *i915,
+				   bool enable)
+{
+	u32 val;
+
+	/* When using bit bashing for I2C, this bit needs to be set to 1 */
+	val = intel_de_read(i915, DSPCLK_GATE_D(i915));
+	if (!enable)
+		val |= PNV_GMBUSUNIT_CLOCK_GATE_DISABLE;
+	else
+		val &= ~PNV_GMBUSUNIT_CLOCK_GATE_DISABLE;
+	intel_de_write(i915, DSPCLK_GATE_D(i915), val);
+}
+
+static void pch_gmbus_clock_gating(struct drm_i915_private *i915,
+				   bool enable)
+{
+	u32 val;
+
+	val = intel_de_read(i915, SOUTH_DSPCLK_GATE_D);
+	if (!enable)
+		val |= PCH_GMBUSUNIT_CLOCK_GATE_DISABLE;
+	else
+		val &= ~PCH_GMBUSUNIT_CLOCK_GATE_DISABLE;
+	intel_de_write(i915, SOUTH_DSPCLK_GATE_D, val);
+}
+
+static void bxt_gmbus_clock_gating(struct drm_i915_private *i915,
+				   bool enable)
+{
+	u32 val;
+
+	val = intel_de_read(i915, GEN9_CLKGATE_DIS_4);
+	if (!enable)
+		val |= BXT_GMBUS_GATING_DIS;
+	else
+		val &= ~BXT_GMBUS_GATING_DIS;
+	intel_de_write(i915, GEN9_CLKGATE_DIS_4, val);
+}
+
+static u32 get_reserved(struct intel_gmbus *bus)
+{
+	struct drm_i915_private *i915 = bus->i915;
+	struct intel_uncore *uncore = &i915->uncore;
+	u32 reserved = 0;
+
+	/* On most chips, these bits must be preserved in software. */
+	if (!IS_I830(i915) && !IS_I845G(i915))
+		reserved = intel_uncore_read_notrace(uncore, bus->gpio_reg) &
+			   (GPIO_DATA_PULLUP_DISABLE |
+			    GPIO_CLOCK_PULLUP_DISABLE);
+
+	return reserved;
+}
+
+static int get_clock(void *data)
+{
+	struct intel_gmbus *bus = data;
+	struct intel_uncore *uncore = &bus->i915->uncore;
+	u32 reserved = get_reserved(bus);
+
+	intel_uncore_write_notrace(uncore,
+				   bus->gpio_reg,
+				   reserved | GPIO_CLOCK_DIR_MASK);
+	intel_uncore_write_notrace(uncore, bus->gpio_reg, reserved);
+
+	return (intel_uncore_read_notrace(uncore, bus->gpio_reg) &
+		GPIO_CLOCK_VAL_IN) != 0;
+}
+
+static int get_data(void *data)
+{
+	struct intel_gmbus *bus = data;
+	struct intel_uncore *uncore = &bus->i915->uncore;
+	u32 reserved = get_reserved(bus);
+
+	intel_uncore_write_notrace(uncore,
+				   bus->gpio_reg,
+				   reserved | GPIO_DATA_DIR_MASK);
+	intel_uncore_write_notrace(uncore, bus->gpio_reg, reserved);
+
+	return (intel_uncore_read_notrace(uncore, bus->gpio_reg) &
+		GPIO_DATA_VAL_IN) != 0;
+}
+
+static void set_clock(void *data, int state_high)
+{
+	struct intel_gmbus *bus = data;
+	struct intel_uncore *uncore = &bus->i915->uncore;
+	u32 reserved = get_reserved(bus);
+	u32 clock_bits;
+
+	if (state_high)
+		clock_bits = GPIO_CLOCK_DIR_IN | GPIO_CLOCK_DIR_MASK;
+	else
+		clock_bits = GPIO_CLOCK_DIR_OUT | GPIO_CLOCK_DIR_MASK |
+			     GPIO_CLOCK_VAL_MASK;
+
+	intel_uncore_write_notrace(uncore,
+				   bus->gpio_reg,
+				   reserved | clock_bits);
+	intel_uncore_posting_read(uncore, bus->gpio_reg);
+}
+
+static void set_data(void *data, int state_high)
+{
+	struct intel_gmbus *bus = data;
+	struct intel_uncore *uncore = &bus->i915->uncore;
+	u32 reserved = get_reserved(bus);
+	u32 data_bits;
+
+	if (state_high)
+		data_bits = GPIO_DATA_DIR_IN | GPIO_DATA_DIR_MASK;
+	else
+		data_bits = GPIO_DATA_DIR_OUT | GPIO_DATA_DIR_MASK |
+			GPIO_DATA_VAL_MASK;
+
+	intel_uncore_write_notrace(uncore, bus->gpio_reg, reserved | data_bits);
+	intel_uncore_posting_read(uncore, bus->gpio_reg);
+}
+
+static int
+intel_gpio_pre_xfer(struct i2c_adapter *adapter)
+{
+	struct intel_gmbus *bus = to_intel_gmbus(adapter);
+	struct drm_i915_private *i915 = bus->i915;
+
+	intel_gmbus_reset(i915);
+
+	if (IS_PINEVIEW(i915))
+		pnv_gmbus_clock_gating(i915, false);
+
+	set_data(bus, 1);
+	set_clock(bus, 1);
+	udelay(I2C_RISEFALL_TIME);
+	return 0;
+}
+
+static void
+intel_gpio_post_xfer(struct i2c_adapter *adapter)
+{
+	struct intel_gmbus *bus = to_intel_gmbus(adapter);
+	struct drm_i915_private *i915 = bus->i915;
+
+	set_data(bus, 1);
+	set_clock(bus, 1);
+
+	if (IS_PINEVIEW(i915))
+		pnv_gmbus_clock_gating(i915, true);
+}
+
+static void
+intel_gpio_setup(struct intel_gmbus *bus, i915_reg_t gpio_reg)
+{
+	struct i2c_algo_bit_data *algo;
+
+	algo = &bus->bit_algo;
+
+	bus->gpio_reg = gpio_reg;
+	bus->adapter.algo_data = algo;
+	algo->setsda = set_data;
+	algo->setscl = set_clock;
+	algo->getsda = get_data;
+	algo->getscl = get_clock;
+	algo->pre_xfer = intel_gpio_pre_xfer;
+	algo->post_xfer = intel_gpio_post_xfer;
+	algo->udelay = I2C_RISEFALL_TIME;
+	algo->timeout = usecs_to_jiffies(2200);
+	algo->data = bus;
+}
+
+static bool has_gmbus_irq(struct drm_i915_private *i915)
+{
+	/*
+	 * encoder->shutdown() may want to use GMBUS
+	 * after irqs have already been disabled.
+	 */
+	return HAS_GMBUS_IRQ(i915) && intel_irqs_enabled(i915);
+}
+
+static int gmbus_wait(struct drm_i915_private *i915, u32 status, u32 irq_en)
+{
+	DEFINE_WAIT(wait);
+	u32 gmbus2;
+	int ret;
+
+	/* Important: The hw handles only the first bit, so set only one! Since
+	 * we also need to check for NAKs besides the hw ready/idle signal, we
+	 * need to wake up periodically and check that ourselves.
+	 */
+	if (!has_gmbus_irq(i915))
+		irq_en = 0;
+
+	add_wait_queue(&i915->display.gmbus.wait_queue, &wait);
+	intel_de_write_fw(i915, GMBUS4(i915), irq_en);
+
+	status |= GMBUS_SATOER;
+	ret = wait_for_us((gmbus2 = intel_de_read_fw(i915, GMBUS2(i915))) & status,
+			  2);
+	if (ret)
+		ret = wait_for((gmbus2 = intel_de_read_fw(i915, GMBUS2(i915))) & status,
+			       50);
+
+	intel_de_write_fw(i915, GMBUS4(i915), 0);
+	remove_wait_queue(&i915->display.gmbus.wait_queue, &wait);
+
+	if (gmbus2 & GMBUS_SATOER)
+		return -ENXIO;
+
+	return ret;
+}
+
+static int
+gmbus_wait_idle(struct drm_i915_private *i915)
+{
+	DEFINE_WAIT(wait);
+	u32 irq_enable;
+	int ret;
+
+	/* Important: The hw handles only the first bit, so set only one! */
+	irq_enable = 0;
+	if (has_gmbus_irq(i915))
+		irq_enable = GMBUS_IDLE_EN;
+
+	add_wait_queue(&i915->display.gmbus.wait_queue, &wait);
+	intel_de_write_fw(i915, GMBUS4(i915), irq_enable);
+
+	ret = intel_wait_for_register_fw(&i915->uncore,
+					 GMBUS2(i915), GMBUS_ACTIVE, 0,
+					 10);
+
+	intel_de_write_fw(i915, GMBUS4(i915), 0);
+	remove_wait_queue(&i915->display.gmbus.wait_queue, &wait);
+
+	return ret;
+}
+
+static unsigned int gmbus_max_xfer_size(struct drm_i915_private *i915)
+{
+	return DISPLAY_VER(i915) >= 9 ? GEN9_GMBUS_BYTE_COUNT_MAX :
+	       GMBUS_BYTE_COUNT_MAX;
+}
+
+static int
+gmbus_xfer_read_chunk(struct drm_i915_private *i915,
+		      unsigned short addr, u8 *buf, unsigned int len,
+		      u32 gmbus0_reg, u32 gmbus1_index)
+{
+	unsigned int size = len;
+	bool burst_read = len > gmbus_max_xfer_size(i915);
+	bool extra_byte_added = false;
+
+	if (burst_read) {
+		/*
+		 * As per HW Spec, for 512Bytes need to read extra Byte and
+		 * Ignore the extra byte read.
+		 */
+		if (len == 512) {
+			extra_byte_added = true;
+			len++;
+		}
+		size = len % 256 + 256;
+		intel_de_write_fw(i915, GMBUS0(i915),
+				  gmbus0_reg | GMBUS_BYTE_CNT_OVERRIDE);
+	}
+
+	intel_de_write_fw(i915, GMBUS1(i915),
+			  gmbus1_index | GMBUS_CYCLE_WAIT | (size << GMBUS_BYTE_COUNT_SHIFT) | (addr << GMBUS_SLAVE_ADDR_SHIFT) | GMBUS_SLAVE_READ | GMBUS_SW_RDY);
+	while (len) {
+		int ret;
+		u32 val, loop = 0;
+
+		ret = gmbus_wait(i915, GMBUS_HW_RDY, GMBUS_HW_RDY_EN);
+		if (ret)
+			return ret;
+
+		val = intel_de_read_fw(i915, GMBUS3(i915));
+		do {
+			if (extra_byte_added && len == 1)
+				break;
+
+			*buf++ = val & 0xff;
+			val >>= 8;
+		} while (--len && ++loop < 4);
+
+		if (burst_read && len == size - 4)
+			/* Reset the override bit */
+			intel_de_write_fw(i915, GMBUS0(i915), gmbus0_reg);
+	}
+
+	return 0;
+}
+
+/*
+ * HW spec says that 512Bytes in Burst read need special treatment.
+ * But it doesn't talk about other multiple of 256Bytes. And couldn't locate
+ * an I2C slave, which supports such a lengthy burst read too for experiments.
+ *
+ * So until things get clarified on HW support, to avoid the burst read length
+ * in fold of 256Bytes except 512, max burst read length is fixed at 767Bytes.
+ */
+#define INTEL_GMBUS_BURST_READ_MAX_LEN		767U
+
+static int
+gmbus_xfer_read(struct drm_i915_private *i915, struct i2c_msg *msg,
+		u32 gmbus0_reg, u32 gmbus1_index)
+{
+	u8 *buf = msg->buf;
+	unsigned int rx_size = msg->len;
+	unsigned int len;
+	int ret;
+
+	do {
+		if (HAS_GMBUS_BURST_READ(i915))
+			len = min(rx_size, INTEL_GMBUS_BURST_READ_MAX_LEN);
+		else
+			len = min(rx_size, gmbus_max_xfer_size(i915));
+
+		ret = gmbus_xfer_read_chunk(i915, msg->addr, buf, len,
+					    gmbus0_reg, gmbus1_index);
+		if (ret)
+			return ret;
+
+		rx_size -= len;
+		buf += len;
+	} while (rx_size != 0);
+
+	return 0;
+}
+
+static int
+gmbus_xfer_write_chunk(struct drm_i915_private *i915,
+		       unsigned short addr, u8 *buf, unsigned int len,
+		       u32 gmbus1_index)
+{
+	unsigned int chunk_size = len;
+	u32 val, loop;
+
+	val = loop = 0;
+	while (len && loop < 4) {
+		val |= *buf++ << (8 * loop++);
+		len -= 1;
+	}
+
+	intel_de_write_fw(i915, GMBUS3(i915), val);
+	intel_de_write_fw(i915, GMBUS1(i915),
+			  gmbus1_index | GMBUS_CYCLE_WAIT | (chunk_size << GMBUS_BYTE_COUNT_SHIFT) | (addr << GMBUS_SLAVE_ADDR_SHIFT) | GMBUS_SLAVE_WRITE | GMBUS_SW_RDY);
+	while (len) {
+		int ret;
+
+		val = loop = 0;
+		do {
+			val |= *buf++ << (8 * loop);
+		} while (--len && ++loop < 4);
+
+		intel_de_write_fw(i915, GMBUS3(i915), val);
+
+		ret = gmbus_wait(i915, GMBUS_HW_RDY, GMBUS_HW_RDY_EN);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int
+gmbus_xfer_write(struct drm_i915_private *i915, struct i2c_msg *msg,
+		 u32 gmbus1_index)
+{
+	u8 *buf = msg->buf;
+	unsigned int tx_size = msg->len;
+	unsigned int len;
+	int ret;
+
+	do {
+		len = min(tx_size, gmbus_max_xfer_size(i915));
+
+		ret = gmbus_xfer_write_chunk(i915, msg->addr, buf, len,
+					     gmbus1_index);
+		if (ret)
+			return ret;
+
+		buf += len;
+		tx_size -= len;
+	} while (tx_size != 0);
+
+	return 0;
+}
+
+/*
+ * The gmbus controller can combine a 1 or 2 byte write with another read/write
+ * that immediately follows it by using an "INDEX" cycle.
+ */
+static bool
+gmbus_is_index_xfer(struct i2c_msg *msgs, int i, int num)
+{
+	return (i + 1 < num &&
+		msgs[i].addr == msgs[i + 1].addr &&
+		!(msgs[i].flags & I2C_M_RD) &&
+		(msgs[i].len == 1 || msgs[i].len == 2) &&
+		msgs[i + 1].len > 0);
+}
+
+static int
+gmbus_index_xfer(struct drm_i915_private *i915, struct i2c_msg *msgs,
+		 u32 gmbus0_reg)
+{
+	u32 gmbus1_index = 0;
+	u32 gmbus5 = 0;
+	int ret;
+
+	if (msgs[0].len == 2)
+		gmbus5 = GMBUS_2BYTE_INDEX_EN |
+			 msgs[0].buf[1] | (msgs[0].buf[0] << 8);
+	if (msgs[0].len == 1)
+		gmbus1_index = GMBUS_CYCLE_INDEX |
+			       (msgs[0].buf[0] << GMBUS_SLAVE_INDEX_SHIFT);
+
+	/* GMBUS5 holds 16-bit index */
+	if (gmbus5)
+		intel_de_write_fw(i915, GMBUS5(i915), gmbus5);
+
+	if (msgs[1].flags & I2C_M_RD)
+		ret = gmbus_xfer_read(i915, &msgs[1], gmbus0_reg,
+				      gmbus1_index);
+	else
+		ret = gmbus_xfer_write(i915, &msgs[1], gmbus1_index);
+
+	/* Clear GMBUS5 after each index transfer */
+	if (gmbus5)
+		intel_de_write_fw(i915, GMBUS5(i915), 0);
+
+	return ret;
+}
+
+static int
+do_gmbus_xfer(struct i2c_adapter *adapter, struct i2c_msg *msgs, int num,
+	      u32 gmbus0_source)
+{
+	struct intel_gmbus *bus = to_intel_gmbus(adapter);
+	struct drm_i915_private *i915 = bus->i915;
+	int i = 0, inc, try = 0;
+	int ret = 0;
+
+	/* Display WA #0868: skl,bxt,kbl,cfl,glk */
+	if (IS_GEMINILAKE(i915) || IS_BROXTON(i915))
+		bxt_gmbus_clock_gating(i915, false);
+	else if (HAS_PCH_SPT(i915) || HAS_PCH_CNP(i915))
+		pch_gmbus_clock_gating(i915, false);
+
+retry:
+	intel_de_write_fw(i915, GMBUS0(i915), gmbus0_source | bus->reg0);
+
+	for (; i < num; i += inc) {
+		inc = 1;
+		if (gmbus_is_index_xfer(msgs, i, num)) {
+			ret = gmbus_index_xfer(i915, &msgs[i],
+					       gmbus0_source | bus->reg0);
+			inc = 2; /* an index transmission is two msgs */
+		} else if (msgs[i].flags & I2C_M_RD) {
+			ret = gmbus_xfer_read(i915, &msgs[i],
+					      gmbus0_source | bus->reg0, 0);
+		} else {
+			ret = gmbus_xfer_write(i915, &msgs[i], 0);
+		}
+
+		if (!ret)
+			ret = gmbus_wait(i915,
+					 GMBUS_HW_WAIT_PHASE, GMBUS_HW_WAIT_EN);
+		if (ret == -ETIMEDOUT)
+			goto timeout;
+		else if (ret)
+			goto clear_err;
+	}
+
+	/* Generate a STOP condition on the bus. Note that gmbus can't generata
+	 * a STOP on the very first cycle. To simplify the code we
+	 * unconditionally generate the STOP condition with an additional gmbus
+	 * cycle. */
+	intel_de_write_fw(i915, GMBUS1(i915), GMBUS_CYCLE_STOP | GMBUS_SW_RDY);
+
+	/* Mark the GMBUS interface as disabled after waiting for idle.
+	 * We will re-enable it at the start of the next xfer,
+	 * till then let it sleep.
+	 */
+	if (gmbus_wait_idle(i915)) {
+		drm_dbg_kms(&i915->drm,
+			    "GMBUS [%s] timed out waiting for idle\n",
+			    adapter->name);
+		ret = -ETIMEDOUT;
+	}
+	intel_de_write_fw(i915, GMBUS0(i915), 0);
+	ret = ret ?: i;
+	goto out;
+
+clear_err:
+	/*
+	 * Wait for bus to IDLE before clearing NAK.
+	 * If we clear the NAK while bus is still active, then it will stay
+	 * active and the next transaction may fail.
+	 *
+	 * If no ACK is received during the address phase of a transaction, the
+	 * adapter must report -ENXIO. It is not clear what to return if no ACK
+	 * is received at other times. But we have to be careful to not return
+	 * spurious -ENXIO because that will prevent i2c and drm edid functions
+	 * from retrying. So return -ENXIO only when gmbus properly quiescents -
+	 * timing out seems to happen when there _is_ a ddc chip present, but
+	 * it's slow responding and only answers on the 2nd retry.
+	 */
+	ret = -ENXIO;
+	if (gmbus_wait_idle(i915)) {
+		drm_dbg_kms(&i915->drm,
+			    "GMBUS [%s] timed out after NAK\n",
+			    adapter->name);
+		ret = -ETIMEDOUT;
+	}
+
+	/* Toggle the Software Clear Interrupt bit. This has the effect
+	 * of resetting the GMBUS controller and so clearing the
+	 * BUS_ERROR raised by the slave's NAK.
+	 */
+	intel_de_write_fw(i915, GMBUS1(i915), GMBUS_SW_CLR_INT);
+	intel_de_write_fw(i915, GMBUS1(i915), 0);
+	intel_de_write_fw(i915, GMBUS0(i915), 0);
+
+	drm_dbg_kms(&i915->drm, "GMBUS [%s] NAK for addr: %04x %c(%d)\n",
+		    adapter->name, msgs[i].addr,
+		    (msgs[i].flags & I2C_M_RD) ? 'r' : 'w', msgs[i].len);
+
+	/*
+	 * Passive adapters sometimes NAK the first probe. Retry the first
+	 * message once on -ENXIO for GMBUS transfers; the bit banging algorithm
+	 * has retries internally. See also the retry loop in
+	 * drm_do_probe_ddc_edid, which bails out on the first -ENXIO.
+	 */
+	if (ret == -ENXIO && i == 0 && try++ == 0) {
+		drm_dbg_kms(&i915->drm,
+			    "GMBUS [%s] NAK on first message, retry\n",
+			    adapter->name);
+		goto retry;
+	}
+
+	goto out;
+
+timeout:
+	drm_dbg_kms(&i915->drm,
+		    "GMBUS [%s] timed out, falling back to bit banging on pin %d\n",
+		    bus->adapter.name, bus->reg0 & 0xff);
+	intel_de_write_fw(i915, GMBUS0(i915), 0);
+
+	/*
+	 * Hardware may not support GMBUS over these pins? Try GPIO bitbanging
+	 * instead. Use EAGAIN to have i2c core retry.
+	 */
+	ret = -EAGAIN;
+
+out:
+	/* Display WA #0868: skl,bxt,kbl,cfl,glk */
+	if (IS_GEMINILAKE(i915) || IS_BROXTON(i915))
+		bxt_gmbus_clock_gating(i915, true);
+	else if (HAS_PCH_SPT(i915) || HAS_PCH_CNP(i915))
+		pch_gmbus_clock_gating(i915, true);
+
+	return ret;
+}
+
+static int
+gmbus_xfer(struct i2c_adapter *adapter, struct i2c_msg *msgs, int num)
+{
+	struct intel_gmbus *bus = to_intel_gmbus(adapter);
+	struct drm_i915_private *i915 = bus->i915;
+	intel_wakeref_t wakeref;
+	int ret;
+
+	wakeref = intel_display_power_get(i915, POWER_DOMAIN_GMBUS);
+
+	if (bus->force_bit) {
+		ret = i2c_bit_algo.master_xfer(adapter, msgs, num);
+		if (ret < 0)
+			bus->force_bit &= ~GMBUS_FORCE_BIT_RETRY;
+	} else {
+		ret = do_gmbus_xfer(adapter, msgs, num, 0);
+		if (ret == -EAGAIN)
+			bus->force_bit |= GMBUS_FORCE_BIT_RETRY;
+	}
+
+	intel_display_power_put(i915, POWER_DOMAIN_GMBUS, wakeref);
+
+	return ret;
+}
+
+int intel_gmbus_output_aksv(struct i2c_adapter *adapter)
+{
+	struct intel_gmbus *bus = to_intel_gmbus(adapter);
+	struct drm_i915_private *i915 = bus->i915;
+	u8 cmd = DRM_HDCP_DDC_AKSV;
+	u8 buf[DRM_HDCP_KSV_LEN] = { 0 };
+	struct i2c_msg msgs[] = {
+		{
+			.addr = DRM_HDCP_DDC_ADDR,
+			.flags = 0,
+			.len = sizeof(cmd),
+			.buf = &cmd,
+		},
+		{
+			.addr = DRM_HDCP_DDC_ADDR,
+			.flags = 0,
+			.len = sizeof(buf),
+			.buf = buf,
+		}
+	};
+	intel_wakeref_t wakeref;
+	int ret;
+
+	wakeref = intel_display_power_get(i915, POWER_DOMAIN_GMBUS);
+	mutex_lock(&i915->display.gmbus.mutex);
+
+	/*
+	 * In order to output Aksv to the receiver, use an indexed write to
+	 * pass the i2c command, and tell GMBUS to use the HW-provided value
+	 * instead of sourcing GMBUS3 for the data.
+	 */
+	ret = do_gmbus_xfer(adapter, msgs, ARRAY_SIZE(msgs), GMBUS_AKSV_SELECT);
+
+	mutex_unlock(&i915->display.gmbus.mutex);
+	intel_display_power_put(i915, POWER_DOMAIN_GMBUS, wakeref);
+
+	return ret;
+}
+
+static u32 gmbus_func(struct i2c_adapter *adapter)
+{
+	return i2c_bit_algo.functionality(adapter) &
+		(I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL |
+		/* I2C_FUNC_10BIT_ADDR | */
+		I2C_FUNC_SMBUS_READ_BLOCK_DATA |
+		I2C_FUNC_SMBUS_BLOCK_PROC_CALL);
+}
+
+static const struct i2c_algorithm gmbus_algorithm = {
+	.master_xfer	= gmbus_xfer,
+	.functionality	= gmbus_func
+};
+
+static void gmbus_lock_bus(struct i2c_adapter *adapter,
+			   unsigned int flags)
+{
+	struct intel_gmbus *bus = to_intel_gmbus(adapter);
+	struct drm_i915_private *i915 = bus->i915;
+
+	mutex_lock(&i915->display.gmbus.mutex);
+}
+
+static int gmbus_trylock_bus(struct i2c_adapter *adapter,
+			     unsigned int flags)
+{
+	struct intel_gmbus *bus = to_intel_gmbus(adapter);
+	struct drm_i915_private *i915 = bus->i915;
+
+	return mutex_trylock(&i915->display.gmbus.mutex);
+}
+
+static void gmbus_unlock_bus(struct i2c_adapter *adapter,
+			     unsigned int flags)
+{
+	struct intel_gmbus *bus = to_intel_gmbus(adapter);
+	struct drm_i915_private *i915 = bus->i915;
+
+	mutex_unlock(&i915->display.gmbus.mutex);
+}
+
+static const struct i2c_lock_operations gmbus_lock_ops = {
+	.lock_bus =    gmbus_lock_bus,
+	.trylock_bus = gmbus_trylock_bus,
+	.unlock_bus =  gmbus_unlock_bus,
+};
+
+/**
+ * intel_gmbus_setup - instantiate all Intel i2c GMBuses
+ * @i915: i915 device private
+ */
+int intel_gmbus_setup(struct drm_i915_private *i915)
+{
+	struct pci_dev *pdev = to_pci_dev(i915->drm.dev);
+	unsigned int pin;
+	int ret;
+
+	if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915))
+		i915->display.gmbus.mmio_base = VLV_DISPLAY_BASE;
+	else if (!HAS_GMCH(i915))
+		/*
+		 * Broxton uses the same PCH offsets for South Display Engine,
+		 * even though it doesn't have a PCH.
+		 */
+		i915->display.gmbus.mmio_base = PCH_DISPLAY_BASE;
+
+	mutex_init(&i915->display.gmbus.mutex);
+	init_waitqueue_head(&i915->display.gmbus.wait_queue);
+
+	for (pin = 0; pin < ARRAY_SIZE(i915->display.gmbus.bus); pin++) {
+		const struct gmbus_pin *gmbus_pin;
+		struct intel_gmbus *bus;
+
+		gmbus_pin = get_gmbus_pin(i915, pin);
+		if (!gmbus_pin)
+			continue;
+
+		bus = kzalloc(sizeof(*bus), GFP_KERNEL);
+		if (!bus) {
+			ret = -ENOMEM;
+			goto err;
+		}
+
+		bus->adapter.owner = THIS_MODULE;
+		bus->adapter.class = I2C_CLASS_DDC;
+		snprintf(bus->adapter.name,
+			 sizeof(bus->adapter.name),
+			 "i915 gmbus %s", gmbus_pin->name);
+
+		bus->adapter.dev.parent = &pdev->dev;
+		bus->i915 = i915;
+
+		bus->adapter.algo = &gmbus_algorithm;
+		bus->adapter.lock_ops = &gmbus_lock_ops;
+
+		/*
+		 * We wish to retry with bit banging
+		 * after a timed out GMBUS attempt.
+		 */
+		bus->adapter.retries = 1;
+
+		/* By default use a conservative clock rate */
+		bus->reg0 = pin | GMBUS_RATE_100KHZ;
+
+		/* gmbus seems to be broken on i830 */
+		if (IS_I830(i915))
+			bus->force_bit = 1;
+
+		intel_gpio_setup(bus, GPIO(i915, gmbus_pin->gpio));
+
+		ret = i2c_add_adapter(&bus->adapter);
+		if (ret) {
+			kfree(bus);
+			goto err;
+		}
+
+		i915->display.gmbus.bus[pin] = bus;
+	}
+
+	intel_gmbus_reset(i915);
+
+	return 0;
+
+err:
+	intel_gmbus_teardown(i915);
+
+	return ret;
+}
+
+struct i2c_adapter *intel_gmbus_get_adapter(struct drm_i915_private *i915,
+					    unsigned int pin)
+{
+	if (drm_WARN_ON(&i915->drm, pin >= ARRAY_SIZE(i915->display.gmbus.bus) ||
+			!i915->display.gmbus.bus[pin]))
+		return NULL;
+
+	return &i915->display.gmbus.bus[pin]->adapter;
+}
+
+void intel_gmbus_force_bit(struct i2c_adapter *adapter, bool force_bit)
+{
+	struct intel_gmbus *bus = to_intel_gmbus(adapter);
+	struct drm_i915_private *i915 = bus->i915;
+
+	mutex_lock(&i915->display.gmbus.mutex);
+
+	bus->force_bit += force_bit ? 1 : -1;
+	drm_dbg_kms(&i915->drm,
+		    "%sabling bit-banging on %s. force bit now %d\n",
+		    force_bit ? "en" : "dis", adapter->name,
+		    bus->force_bit);
+
+	mutex_unlock(&i915->display.gmbus.mutex);
+}
+
+bool intel_gmbus_is_forced_bit(struct i2c_adapter *adapter)
+{
+	struct intel_gmbus *bus = to_intel_gmbus(adapter);
+
+	return bus->force_bit;
+}
+
+void intel_gmbus_teardown(struct drm_i915_private *i915)
+{
+	unsigned int pin;
+
+	for (pin = 0; pin < ARRAY_SIZE(i915->display.gmbus.bus); pin++) {
+		struct intel_gmbus *bus;
+
+		bus = i915->display.gmbus.bus[pin];
+		if (!bus)
+			continue;
+
+		i2c_del_adapter(&bus->adapter);
+
+		kfree(bus);
+		i915->display.gmbus.bus[pin] = NULL;
+	}
+}
diff --git a/drivers/gpu/drm/i915/display/intel_gmbus.h b/drivers/gpu/drm/i915/display/intel_gmbus.h
new file mode 100644
index 000000000..20f704bd4
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_gmbus.h
@@ -0,0 +1,49 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_GMBUS_H__
+#define __INTEL_GMBUS_H__
+
+#include <linux/types.h>
+
+struct drm_i915_private;
+struct i2c_adapter;
+
+#define GMBUS_PIN_DISABLED	0
+#define GMBUS_PIN_SSC		1
+#define GMBUS_PIN_VGADDC	2
+#define GMBUS_PIN_PANEL		3
+#define GMBUS_PIN_DPD_CHV	3 /* HDMID_CHV */
+#define GMBUS_PIN_DPC		4 /* HDMIC */
+#define GMBUS_PIN_DPB		5 /* SDVO, HDMIB */
+#define GMBUS_PIN_DPD		6 /* HDMID */
+#define GMBUS_PIN_RESERVED	7 /* 7 reserved */
+#define GMBUS_PIN_1_BXT		1 /* BXT+ (atom) and CNP+ (big core) */
+#define GMBUS_PIN_2_BXT		2
+#define GMBUS_PIN_3_BXT		3
+#define GMBUS_PIN_4_CNP		4
+#define GMBUS_PIN_5_MTP		5
+#define GMBUS_PIN_9_TC1_ICP	9
+#define GMBUS_PIN_10_TC2_ICP	10
+#define GMBUS_PIN_11_TC3_ICP	11
+#define GMBUS_PIN_12_TC4_ICP	12
+#define GMBUS_PIN_13_TC5_TGP	13
+#define GMBUS_PIN_14_TC6_TGP	14
+
+#define GMBUS_NUM_PINS	15 /* including 0 */
+
+int intel_gmbus_setup(struct drm_i915_private *dev_priv);
+void intel_gmbus_teardown(struct drm_i915_private *dev_priv);
+bool intel_gmbus_is_valid_pin(struct drm_i915_private *dev_priv,
+			      unsigned int pin);
+int intel_gmbus_output_aksv(struct i2c_adapter *adapter);
+
+struct i2c_adapter *
+intel_gmbus_get_adapter(struct drm_i915_private *dev_priv, unsigned int pin);
+void intel_gmbus_force_bit(struct i2c_adapter *adapter, bool force_bit);
+bool intel_gmbus_is_forced_bit(struct i2c_adapter *adapter);
+void intel_gmbus_reset(struct drm_i915_private *dev_priv);
+
+#endif /* __INTEL_GMBUS_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_gmbus_regs.h b/drivers/gpu/drm/i915/display/intel_gmbus_regs.h
new file mode 100644
index 000000000..53aacbda9
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_gmbus_regs.h
@@ -0,0 +1,81 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#ifndef __INTEL_GMBUS_REGS_H__
+#define __INTEL_GMBUS_REGS_H__
+
+#include "i915_reg_defs.h"
+
+#define GMBUS_MMIO_BASE(__i915) ((__i915)->display.gmbus.mmio_base)
+
+#define GPIO(__i915, gpio)	_MMIO(GMBUS_MMIO_BASE(__i915) + 0x5010 + 4 * (gpio))
+#define   GPIO_CLOCK_DIR_MASK		(1 << 0)
+#define   GPIO_CLOCK_DIR_IN		(0 << 1)
+#define   GPIO_CLOCK_DIR_OUT		(1 << 1)
+#define   GPIO_CLOCK_VAL_MASK		(1 << 2)
+#define   GPIO_CLOCK_VAL_OUT		(1 << 3)
+#define   GPIO_CLOCK_VAL_IN		(1 << 4)
+#define   GPIO_CLOCK_PULLUP_DISABLE	(1 << 5)
+#define   GPIO_DATA_DIR_MASK		(1 << 8)
+#define   GPIO_DATA_DIR_IN		(0 << 9)
+#define   GPIO_DATA_DIR_OUT		(1 << 9)
+#define   GPIO_DATA_VAL_MASK		(1 << 10)
+#define   GPIO_DATA_VAL_OUT		(1 << 11)
+#define   GPIO_DATA_VAL_IN		(1 << 12)
+#define   GPIO_DATA_PULLUP_DISABLE	(1 << 13)
+
+/* clock/port select */
+#define GMBUS0(__i915)		_MMIO(GMBUS_MMIO_BASE(__i915) + 0x5100)
+#define   GMBUS_AKSV_SELECT		(1 << 11)
+#define   GMBUS_RATE_100KHZ		(0 << 8)
+#define   GMBUS_RATE_50KHZ		(1 << 8)
+#define   GMBUS_RATE_400KHZ		(2 << 8) /* reserved on Pineview */
+#define   GMBUS_RATE_1MHZ		(3 << 8) /* reserved on Pineview */
+#define   GMBUS_HOLD_EXT		(1 << 7) /* 300ns hold time, rsvd on Pineview */
+#define   GMBUS_BYTE_CNT_OVERRIDE	(1 << 6)
+
+/* command/status */
+#define GMBUS1(__i915)		_MMIO(GMBUS_MMIO_BASE(__i915) + 0x5104)
+#define   GMBUS_SW_CLR_INT		(1 << 31)
+#define   GMBUS_SW_RDY			(1 << 30)
+#define   GMBUS_ENT			(1 << 29) /* enable timeout */
+#define   GMBUS_CYCLE_NONE		(0 << 25)
+#define   GMBUS_CYCLE_WAIT		(1 << 25)
+#define   GMBUS_CYCLE_INDEX		(2 << 25)
+#define   GMBUS_CYCLE_STOP		(4 << 25)
+#define   GMBUS_BYTE_COUNT_SHIFT	16
+#define   GMBUS_BYTE_COUNT_MAX		256U
+#define   GEN9_GMBUS_BYTE_COUNT_MAX	511U
+#define   GMBUS_SLAVE_INDEX_SHIFT	8
+#define   GMBUS_SLAVE_ADDR_SHIFT	1
+#define   GMBUS_SLAVE_READ		(1 << 0)
+#define   GMBUS_SLAVE_WRITE		(0 << 0)
+
+/* status */
+#define GMBUS2(__i915)		_MMIO(GMBUS_MMIO_BASE(__i915) + 0x5108)
+#define   GMBUS_INUSE			(1 << 15)
+#define   GMBUS_HW_WAIT_PHASE		(1 << 14)
+#define   GMBUS_STALL_TIMEOUT		(1 << 13)
+#define   GMBUS_INT			(1 << 12)
+#define   GMBUS_HW_RDY			(1 << 11)
+#define   GMBUS_SATOER			(1 << 10)
+#define   GMBUS_ACTIVE			(1 << 9)
+
+/* data buffer bytes 3-0 */
+#define GMBUS3(__i915)		_MMIO(GMBUS_MMIO_BASE(__i915) + 0x510c)
+
+/* interrupt mask (Pineview+) */
+#define GMBUS4(__i915)		_MMIO(GMBUS_MMIO_BASE(__i915) + 0x5110)
+#define   GMBUS_SLAVE_TIMEOUT_EN	(1 << 4)
+#define   GMBUS_NAK_EN			(1 << 3)
+#define   GMBUS_IDLE_EN			(1 << 2)
+#define   GMBUS_HW_WAIT_EN		(1 << 1)
+#define   GMBUS_HW_RDY_EN		(1 << 0)
+
+/* byte index */
+#define GMBUS5(__i915)		_MMIO(GMBUS_MMIO_BASE(__i915) + 0x5120)
+#define   GMBUS_2BYTE_INDEX_EN		(1 << 31)
+
+#endif /* __INTEL_GMBUS_REGS_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c
new file mode 100644
index 000000000..6406fd487
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
@@ -0,0 +1,2586 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright (C) 2017 Google, Inc.
+ * Copyright _ 2017-2019, Intel Corporation.
+ *
+ * Authors:
+ * Sean Paul <seanpaul@chromium.org>
+ * Ramalingam C <ramalingam.c@intel.com>
+ */
+
+#include <linux/component.h>
+#include <linux/i2c.h>
+#include <linux/random.h>
+
+#include <drm/display/drm_hdcp_helper.h>
+#include <drm/i915_component.h>
+
+#include "i915_drv.h"
+#include "i915_reg.h"
+#include "intel_connector.h"
+#include "intel_de.h"
+#include "intel_display_power.h"
+#include "intel_display_power_well.h"
+#include "intel_display_types.h"
+#include "intel_hdcp.h"
+#include "intel_hdcp_regs.h"
+#include "intel_pcode.h"
+
+#define KEY_LOAD_TRIES	5
+#define HDCP2_LC_RETRY_CNT			3
+
+static int intel_conn_to_vcpi(struct intel_connector *connector)
+{
+	struct drm_dp_mst_topology_mgr *mgr;
+	struct drm_dp_mst_atomic_payload *payload;
+	struct drm_dp_mst_topology_state *mst_state;
+	int vcpi = 0;
+
+	/* For HDMI this is forced to be 0x0. For DP SST also this is 0x0. */
+	if (!connector->port)
+		return 0;
+	mgr = connector->port->mgr;
+
+	drm_modeset_lock(&mgr->base.lock, NULL);
+	mst_state = to_drm_dp_mst_topology_state(mgr->base.state);
+	payload = drm_atomic_get_mst_payload_state(mst_state, connector->port);
+	if (drm_WARN_ON(mgr->dev, !payload))
+		goto out;
+
+	vcpi = payload->vcpi;
+	if (drm_WARN_ON(mgr->dev, vcpi < 0)) {
+		vcpi = 0;
+		goto out;
+	}
+out:
+	drm_modeset_unlock(&mgr->base.lock);
+	return vcpi;
+}
+
+/*
+ * intel_hdcp_required_content_stream selects the most highest common possible HDCP
+ * content_type for all streams in DP MST topology because security f/w doesn't
+ * have any provision to mark content_type for each stream separately, it marks
+ * all available streams with the content_type proivided at the time of port
+ * authentication. This may prohibit the userspace to use type1 content on
+ * HDCP 2.2 capable sink because of other sink are not capable of HDCP 2.2 in
+ * DP MST topology. Though it is not compulsory, security fw should change its
+ * policy to mark different content_types for different streams.
+ */
+static int
+intel_hdcp_required_content_stream(struct intel_digital_port *dig_port)
+{
+	struct drm_connector_list_iter conn_iter;
+	struct intel_digital_port *conn_dig_port;
+	struct intel_connector *connector;
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	struct hdcp_port_data *data = &dig_port->hdcp_port_data;
+	bool enforce_type0 = false;
+	int k;
+
+	data->k = 0;
+
+	if (dig_port->hdcp_auth_status)
+		return 0;
+
+	drm_connector_list_iter_begin(&i915->drm, &conn_iter);
+	for_each_intel_connector_iter(connector, &conn_iter) {
+		if (connector->base.status == connector_status_disconnected)
+			continue;
+
+		if (!intel_encoder_is_mst(intel_attached_encoder(connector)))
+			continue;
+
+		conn_dig_port = intel_attached_dig_port(connector);
+		if (conn_dig_port != dig_port)
+			continue;
+
+		if (!enforce_type0 && !dig_port->hdcp_mst_type1_capable)
+			enforce_type0 = true;
+
+		data->streams[data->k].stream_id = intel_conn_to_vcpi(connector);
+		data->k++;
+
+		/* if there is only one active stream */
+		if (dig_port->dp.active_mst_links <= 1)
+			break;
+	}
+	drm_connector_list_iter_end(&conn_iter);
+
+	if (drm_WARN_ON(&i915->drm, data->k > INTEL_NUM_PIPES(i915) || data->k == 0))
+		return -EINVAL;
+
+	/*
+	 * Apply common protection level across all streams in DP MST Topology.
+	 * Use highest supported content type for all streams in DP MST Topology.
+	 */
+	for (k = 0; k < data->k; k++)
+		data->streams[k].stream_type =
+			enforce_type0 ? DRM_MODE_HDCP_CONTENT_TYPE0 : DRM_MODE_HDCP_CONTENT_TYPE1;
+
+	return 0;
+}
+
+static int intel_hdcp_prepare_streams(struct intel_connector *connector)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct hdcp_port_data *data = &dig_port->hdcp_port_data;
+	struct intel_hdcp *hdcp = &connector->hdcp;
+	int ret;
+
+	if (!intel_encoder_is_mst(intel_attached_encoder(connector))) {
+		data->k = 1;
+		data->streams[0].stream_type = hdcp->content_type;
+	} else {
+		ret = intel_hdcp_required_content_stream(dig_port);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static
+bool intel_hdcp_is_ksv_valid(u8 *ksv)
+{
+	int i, ones = 0;
+	/* KSV has 20 1's and 20 0's */
+	for (i = 0; i < DRM_HDCP_KSV_LEN; i++)
+		ones += hweight8(ksv[i]);
+	if (ones != 20)
+		return false;
+
+	return true;
+}
+
+static
+int intel_hdcp_read_valid_bksv(struct intel_digital_port *dig_port,
+			       const struct intel_hdcp_shim *shim, u8 *bksv)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	int ret, i, tries = 2;
+
+	/* HDCP spec states that we must retry the bksv if it is invalid */
+	for (i = 0; i < tries; i++) {
+		ret = shim->read_bksv(dig_port, bksv);
+		if (ret)
+			return ret;
+		if (intel_hdcp_is_ksv_valid(bksv))
+			break;
+	}
+	if (i == tries) {
+		drm_dbg_kms(&i915->drm, "Bksv is invalid\n");
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+/* Is HDCP1.4 capable on Platform and Sink */
+bool intel_hdcp_capable(struct intel_connector *connector)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	const struct intel_hdcp_shim *shim = connector->hdcp.shim;
+	bool capable = false;
+	u8 bksv[5];
+
+	if (!shim)
+		return capable;
+
+	if (shim->hdcp_capable) {
+		shim->hdcp_capable(dig_port, &capable);
+	} else {
+		if (!intel_hdcp_read_valid_bksv(dig_port, shim, bksv))
+			capable = true;
+	}
+
+	return capable;
+}
+
+/* Is HDCP2.2 capable on Platform and Sink */
+bool intel_hdcp2_capable(struct intel_connector *connector)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_hdcp *hdcp = &connector->hdcp;
+	bool capable = false;
+
+	/* I915 support for HDCP2.2 */
+	if (!hdcp->hdcp2_supported)
+		return false;
+
+	/* MEI interface is solid */
+	mutex_lock(&dev_priv->display.hdcp.comp_mutex);
+	if (!dev_priv->display.hdcp.comp_added ||  !dev_priv->display.hdcp.master) {
+		mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
+		return false;
+	}
+	mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
+
+	/* Sink's capability for HDCP2.2 */
+	hdcp->shim->hdcp_2_2_capable(dig_port, &capable);
+
+	return capable;
+}
+
+static bool intel_hdcp_in_use(struct drm_i915_private *dev_priv,
+			      enum transcoder cpu_transcoder, enum port port)
+{
+	return intel_de_read(dev_priv,
+	                     HDCP_STATUS(dev_priv, cpu_transcoder, port)) &
+	       HDCP_STATUS_ENC;
+}
+
+static bool intel_hdcp2_in_use(struct drm_i915_private *dev_priv,
+			       enum transcoder cpu_transcoder, enum port port)
+{
+	return intel_de_read(dev_priv,
+	                     HDCP2_STATUS(dev_priv, cpu_transcoder, port)) &
+	       LINK_ENCRYPTION_STATUS;
+}
+
+static int intel_hdcp_poll_ksv_fifo(struct intel_digital_port *dig_port,
+				    const struct intel_hdcp_shim *shim)
+{
+	int ret, read_ret;
+	bool ksv_ready;
+
+	/* Poll for ksv list ready (spec says max time allowed is 5s) */
+	ret = __wait_for(read_ret = shim->read_ksv_ready(dig_port,
+							 &ksv_ready),
+			 read_ret || ksv_ready, 5 * 1000 * 1000, 1000,
+			 100 * 1000);
+	if (ret)
+		return ret;
+	if (read_ret)
+		return read_ret;
+	if (!ksv_ready)
+		return -ETIMEDOUT;
+
+	return 0;
+}
+
+static bool hdcp_key_loadable(struct drm_i915_private *dev_priv)
+{
+	enum i915_power_well_id id;
+	intel_wakeref_t wakeref;
+	bool enabled = false;
+
+	/*
+	 * On HSW and BDW, Display HW loads the Key as soon as Display resumes.
+	 * On all BXT+, SW can load the keys only when the PW#1 is turned on.
+	 */
+	if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
+		id = HSW_DISP_PW_GLOBAL;
+	else
+		id = SKL_DISP_PW_1;
+
+	/* PG1 (power well #1) needs to be enabled */
+	with_intel_runtime_pm(&dev_priv->runtime_pm, wakeref)
+		enabled = intel_display_power_well_is_enabled(dev_priv, id);
+
+	/*
+	 * Another req for hdcp key loadability is enabled state of pll for
+	 * cdclk. Without active crtc we wont land here. So we are assuming that
+	 * cdclk is already on.
+	 */
+
+	return enabled;
+}
+
+static void intel_hdcp_clear_keys(struct drm_i915_private *dev_priv)
+{
+	intel_de_write(dev_priv, HDCP_KEY_CONF, HDCP_CLEAR_KEYS_TRIGGER);
+	intel_de_write(dev_priv, HDCP_KEY_STATUS,
+		       HDCP_KEY_LOAD_DONE | HDCP_KEY_LOAD_STATUS | HDCP_FUSE_IN_PROGRESS | HDCP_FUSE_ERROR | HDCP_FUSE_DONE);
+}
+
+static int intel_hdcp_load_keys(struct drm_i915_private *dev_priv)
+{
+	int ret;
+	u32 val;
+
+	val = intel_de_read(dev_priv, HDCP_KEY_STATUS);
+	if ((val & HDCP_KEY_LOAD_DONE) && (val & HDCP_KEY_LOAD_STATUS))
+		return 0;
+
+	/*
+	 * On HSW and BDW HW loads the HDCP1.4 Key when Display comes
+	 * out of reset. So if Key is not already loaded, its an error state.
+	 */
+	if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
+		if (!(intel_de_read(dev_priv, HDCP_KEY_STATUS) & HDCP_KEY_LOAD_DONE))
+			return -ENXIO;
+
+	/*
+	 * Initiate loading the HDCP key from fuses.
+	 *
+	 * BXT+ platforms, HDCP key needs to be loaded by SW. Only display
+	 * version 9 platforms (minus BXT) differ in the key load trigger
+	 * process from other platforms. These platforms use the GT Driver
+	 * Mailbox interface.
+	 */
+	if (DISPLAY_VER(dev_priv) == 9 && !IS_BROXTON(dev_priv)) {
+		ret = snb_pcode_write(&dev_priv->uncore, SKL_PCODE_LOAD_HDCP_KEYS, 1);
+		if (ret) {
+			drm_err(&dev_priv->drm,
+				"Failed to initiate HDCP key load (%d)\n",
+				ret);
+			return ret;
+		}
+	} else {
+		intel_de_write(dev_priv, HDCP_KEY_CONF, HDCP_KEY_LOAD_TRIGGER);
+	}
+
+	/* Wait for the keys to load (500us) */
+	ret = __intel_wait_for_register(&dev_priv->uncore, HDCP_KEY_STATUS,
+					HDCP_KEY_LOAD_DONE, HDCP_KEY_LOAD_DONE,
+					10, 1, &val);
+	if (ret)
+		return ret;
+	else if (!(val & HDCP_KEY_LOAD_STATUS))
+		return -ENXIO;
+
+	/* Send Aksv over to PCH display for use in authentication */
+	intel_de_write(dev_priv, HDCP_KEY_CONF, HDCP_AKSV_SEND_TRIGGER);
+
+	return 0;
+}
+
+/* Returns updated SHA-1 index */
+static int intel_write_sha_text(struct drm_i915_private *dev_priv, u32 sha_text)
+{
+	intel_de_write(dev_priv, HDCP_SHA_TEXT, sha_text);
+	if (intel_de_wait_for_set(dev_priv, HDCP_REP_CTL, HDCP_SHA1_READY, 1)) {
+		drm_err(&dev_priv->drm, "Timed out waiting for SHA1 ready\n");
+		return -ETIMEDOUT;
+	}
+	return 0;
+}
+
+static
+u32 intel_hdcp_get_repeater_ctl(struct drm_i915_private *dev_priv,
+				enum transcoder cpu_transcoder, enum port port)
+{
+	if (DISPLAY_VER(dev_priv) >= 12) {
+		switch (cpu_transcoder) {
+		case TRANSCODER_A:
+			return HDCP_TRANSA_REP_PRESENT |
+			       HDCP_TRANSA_SHA1_M0;
+		case TRANSCODER_B:
+			return HDCP_TRANSB_REP_PRESENT |
+			       HDCP_TRANSB_SHA1_M0;
+		case TRANSCODER_C:
+			return HDCP_TRANSC_REP_PRESENT |
+			       HDCP_TRANSC_SHA1_M0;
+		case TRANSCODER_D:
+			return HDCP_TRANSD_REP_PRESENT |
+			       HDCP_TRANSD_SHA1_M0;
+		default:
+			drm_err(&dev_priv->drm, "Unknown transcoder %d\n",
+				cpu_transcoder);
+			return -EINVAL;
+		}
+	}
+
+	switch (port) {
+	case PORT_A:
+		return HDCP_DDIA_REP_PRESENT | HDCP_DDIA_SHA1_M0;
+	case PORT_B:
+		return HDCP_DDIB_REP_PRESENT | HDCP_DDIB_SHA1_M0;
+	case PORT_C:
+		return HDCP_DDIC_REP_PRESENT | HDCP_DDIC_SHA1_M0;
+	case PORT_D:
+		return HDCP_DDID_REP_PRESENT | HDCP_DDID_SHA1_M0;
+	case PORT_E:
+		return HDCP_DDIE_REP_PRESENT | HDCP_DDIE_SHA1_M0;
+	default:
+		drm_err(&dev_priv->drm, "Unknown port %d\n", port);
+		return -EINVAL;
+	}
+}
+
+static
+int intel_hdcp_validate_v_prime(struct intel_connector *connector,
+				const struct intel_hdcp_shim *shim,
+				u8 *ksv_fifo, u8 num_downstream, u8 *bstatus)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	enum transcoder cpu_transcoder = connector->hdcp.cpu_transcoder;
+	enum port port = dig_port->base.port;
+	u32 vprime, sha_text, sha_leftovers, rep_ctl;
+	int ret, i, j, sha_idx;
+
+	/* Process V' values from the receiver */
+	for (i = 0; i < DRM_HDCP_V_PRIME_NUM_PARTS; i++) {
+		ret = shim->read_v_prime_part(dig_port, i, &vprime);
+		if (ret)
+			return ret;
+		intel_de_write(dev_priv, HDCP_SHA_V_PRIME(i), vprime);
+	}
+
+	/*
+	 * We need to write the concatenation of all device KSVs, BINFO (DP) ||
+	 * BSTATUS (HDMI), and M0 (which is added via HDCP_REP_CTL). This byte
+	 * stream is written via the HDCP_SHA_TEXT register in 32-bit
+	 * increments. Every 64 bytes, we need to write HDCP_REP_CTL again. This
+	 * index will keep track of our progress through the 64 bytes as well as
+	 * helping us work the 40-bit KSVs through our 32-bit register.
+	 *
+	 * NOTE: data passed via HDCP_SHA_TEXT should be big-endian
+	 */
+	sha_idx = 0;
+	sha_text = 0;
+	sha_leftovers = 0;
+	rep_ctl = intel_hdcp_get_repeater_ctl(dev_priv, cpu_transcoder, port);
+	intel_de_write(dev_priv, HDCP_REP_CTL, rep_ctl | HDCP_SHA1_TEXT_32);
+	for (i = 0; i < num_downstream; i++) {
+		unsigned int sha_empty;
+		u8 *ksv = &ksv_fifo[i * DRM_HDCP_KSV_LEN];
+
+		/* Fill up the empty slots in sha_text and write it out */
+		sha_empty = sizeof(sha_text) - sha_leftovers;
+		for (j = 0; j < sha_empty; j++) {
+			u8 off = ((sizeof(sha_text) - j - 1 - sha_leftovers) * 8);
+			sha_text |= ksv[j] << off;
+		}
+
+		ret = intel_write_sha_text(dev_priv, sha_text);
+		if (ret < 0)
+			return ret;
+
+		/* Programming guide writes this every 64 bytes */
+		sha_idx += sizeof(sha_text);
+		if (!(sha_idx % 64))
+			intel_de_write(dev_priv, HDCP_REP_CTL,
+				       rep_ctl | HDCP_SHA1_TEXT_32);
+
+		/* Store the leftover bytes from the ksv in sha_text */
+		sha_leftovers = DRM_HDCP_KSV_LEN - sha_empty;
+		sha_text = 0;
+		for (j = 0; j < sha_leftovers; j++)
+			sha_text |= ksv[sha_empty + j] <<
+					((sizeof(sha_text) - j - 1) * 8);
+
+		/*
+		 * If we still have room in sha_text for more data, continue.
+		 * Otherwise, write it out immediately.
+		 */
+		if (sizeof(sha_text) > sha_leftovers)
+			continue;
+
+		ret = intel_write_sha_text(dev_priv, sha_text);
+		if (ret < 0)
+			return ret;
+		sha_leftovers = 0;
+		sha_text = 0;
+		sha_idx += sizeof(sha_text);
+	}
+
+	/*
+	 * We need to write BINFO/BSTATUS, and M0 now. Depending on how many
+	 * bytes are leftover from the last ksv, we might be able to fit them
+	 * all in sha_text (first 2 cases), or we might need to split them up
+	 * into 2 writes (last 2 cases).
+	 */
+	if (sha_leftovers == 0) {
+		/* Write 16 bits of text, 16 bits of M0 */
+		intel_de_write(dev_priv, HDCP_REP_CTL,
+			       rep_ctl | HDCP_SHA1_TEXT_16);
+		ret = intel_write_sha_text(dev_priv,
+					   bstatus[0] << 8 | bstatus[1]);
+		if (ret < 0)
+			return ret;
+		sha_idx += sizeof(sha_text);
+
+		/* Write 32 bits of M0 */
+		intel_de_write(dev_priv, HDCP_REP_CTL,
+			       rep_ctl | HDCP_SHA1_TEXT_0);
+		ret = intel_write_sha_text(dev_priv, 0);
+		if (ret < 0)
+			return ret;
+		sha_idx += sizeof(sha_text);
+
+		/* Write 16 bits of M0 */
+		intel_de_write(dev_priv, HDCP_REP_CTL,
+			       rep_ctl | HDCP_SHA1_TEXT_16);
+		ret = intel_write_sha_text(dev_priv, 0);
+		if (ret < 0)
+			return ret;
+		sha_idx += sizeof(sha_text);
+
+	} else if (sha_leftovers == 1) {
+		/* Write 24 bits of text, 8 bits of M0 */
+		intel_de_write(dev_priv, HDCP_REP_CTL,
+			       rep_ctl | HDCP_SHA1_TEXT_24);
+		sha_text |= bstatus[0] << 16 | bstatus[1] << 8;
+		/* Only 24-bits of data, must be in the LSB */
+		sha_text = (sha_text & 0xffffff00) >> 8;
+		ret = intel_write_sha_text(dev_priv, sha_text);
+		if (ret < 0)
+			return ret;
+		sha_idx += sizeof(sha_text);
+
+		/* Write 32 bits of M0 */
+		intel_de_write(dev_priv, HDCP_REP_CTL,
+			       rep_ctl | HDCP_SHA1_TEXT_0);
+		ret = intel_write_sha_text(dev_priv, 0);
+		if (ret < 0)
+			return ret;
+		sha_idx += sizeof(sha_text);
+
+		/* Write 24 bits of M0 */
+		intel_de_write(dev_priv, HDCP_REP_CTL,
+			       rep_ctl | HDCP_SHA1_TEXT_8);
+		ret = intel_write_sha_text(dev_priv, 0);
+		if (ret < 0)
+			return ret;
+		sha_idx += sizeof(sha_text);
+
+	} else if (sha_leftovers == 2) {
+		/* Write 32 bits of text */
+		intel_de_write(dev_priv, HDCP_REP_CTL,
+			       rep_ctl | HDCP_SHA1_TEXT_32);
+		sha_text |= bstatus[0] << 8 | bstatus[1];
+		ret = intel_write_sha_text(dev_priv, sha_text);
+		if (ret < 0)
+			return ret;
+		sha_idx += sizeof(sha_text);
+
+		/* Write 64 bits of M0 */
+		intel_de_write(dev_priv, HDCP_REP_CTL,
+			       rep_ctl | HDCP_SHA1_TEXT_0);
+		for (i = 0; i < 2; i++) {
+			ret = intel_write_sha_text(dev_priv, 0);
+			if (ret < 0)
+				return ret;
+			sha_idx += sizeof(sha_text);
+		}
+
+		/*
+		 * Terminate the SHA-1 stream by hand. For the other leftover
+		 * cases this is appended by the hardware.
+		 */
+		intel_de_write(dev_priv, HDCP_REP_CTL,
+			       rep_ctl | HDCP_SHA1_TEXT_32);
+		sha_text = DRM_HDCP_SHA1_TERMINATOR << 24;
+		ret = intel_write_sha_text(dev_priv, sha_text);
+		if (ret < 0)
+			return ret;
+		sha_idx += sizeof(sha_text);
+	} else if (sha_leftovers == 3) {
+		/* Write 32 bits of text (filled from LSB) */
+		intel_de_write(dev_priv, HDCP_REP_CTL,
+			       rep_ctl | HDCP_SHA1_TEXT_32);
+		sha_text |= bstatus[0];
+		ret = intel_write_sha_text(dev_priv, sha_text);
+		if (ret < 0)
+			return ret;
+		sha_idx += sizeof(sha_text);
+
+		/* Write 8 bits of text (filled from LSB), 24 bits of M0 */
+		intel_de_write(dev_priv, HDCP_REP_CTL,
+			       rep_ctl | HDCP_SHA1_TEXT_8);
+		ret = intel_write_sha_text(dev_priv, bstatus[1]);
+		if (ret < 0)
+			return ret;
+		sha_idx += sizeof(sha_text);
+
+		/* Write 32 bits of M0 */
+		intel_de_write(dev_priv, HDCP_REP_CTL,
+			       rep_ctl | HDCP_SHA1_TEXT_0);
+		ret = intel_write_sha_text(dev_priv, 0);
+		if (ret < 0)
+			return ret;
+		sha_idx += sizeof(sha_text);
+
+		/* Write 8 bits of M0 */
+		intel_de_write(dev_priv, HDCP_REP_CTL,
+			       rep_ctl | HDCP_SHA1_TEXT_24);
+		ret = intel_write_sha_text(dev_priv, 0);
+		if (ret < 0)
+			return ret;
+		sha_idx += sizeof(sha_text);
+	} else {
+		drm_dbg_kms(&dev_priv->drm, "Invalid number of leftovers %d\n",
+			    sha_leftovers);
+		return -EINVAL;
+	}
+
+	intel_de_write(dev_priv, HDCP_REP_CTL, rep_ctl | HDCP_SHA1_TEXT_32);
+	/* Fill up to 64-4 bytes with zeros (leave the last write for length) */
+	while ((sha_idx % 64) < (64 - sizeof(sha_text))) {
+		ret = intel_write_sha_text(dev_priv, 0);
+		if (ret < 0)
+			return ret;
+		sha_idx += sizeof(sha_text);
+	}
+
+	/*
+	 * Last write gets the length of the concatenation in bits. That is:
+	 *  - 5 bytes per device
+	 *  - 10 bytes for BINFO/BSTATUS(2), M0(8)
+	 */
+	sha_text = (num_downstream * 5 + 10) * 8;
+	ret = intel_write_sha_text(dev_priv, sha_text);
+	if (ret < 0)
+		return ret;
+
+	/* Tell the HW we're done with the hash and wait for it to ACK */
+	intel_de_write(dev_priv, HDCP_REP_CTL,
+		       rep_ctl | HDCP_SHA1_COMPLETE_HASH);
+	if (intel_de_wait_for_set(dev_priv, HDCP_REP_CTL,
+				  HDCP_SHA1_COMPLETE, 1)) {
+		drm_err(&dev_priv->drm, "Timed out waiting for SHA1 complete\n");
+		return -ETIMEDOUT;
+	}
+	if (!(intel_de_read(dev_priv, HDCP_REP_CTL) & HDCP_SHA1_V_MATCH)) {
+		drm_dbg_kms(&dev_priv->drm, "SHA-1 mismatch, HDCP failed\n");
+		return -ENXIO;
+	}
+
+	return 0;
+}
+
+/* Implements Part 2 of the HDCP authorization procedure */
+static
+int intel_hdcp_auth_downstream(struct intel_connector *connector)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	const struct intel_hdcp_shim *shim = connector->hdcp.shim;
+	u8 bstatus[2], num_downstream, *ksv_fifo;
+	int ret, i, tries = 3;
+
+	ret = intel_hdcp_poll_ksv_fifo(dig_port, shim);
+	if (ret) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "KSV list failed to become ready (%d)\n", ret);
+		return ret;
+	}
+
+	ret = shim->read_bstatus(dig_port, bstatus);
+	if (ret)
+		return ret;
+
+	if (DRM_HDCP_MAX_DEVICE_EXCEEDED(bstatus[0]) ||
+	    DRM_HDCP_MAX_CASCADE_EXCEEDED(bstatus[1])) {
+		drm_dbg_kms(&dev_priv->drm, "Max Topology Limit Exceeded\n");
+		return -EPERM;
+	}
+
+	/*
+	 * When repeater reports 0 device count, HDCP1.4 spec allows disabling
+	 * the HDCP encryption. That implies that repeater can't have its own
+	 * display. As there is no consumption of encrypted content in the
+	 * repeater with 0 downstream devices, we are failing the
+	 * authentication.
+	 */
+	num_downstream = DRM_HDCP_NUM_DOWNSTREAM(bstatus[0]);
+	if (num_downstream == 0) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Repeater with zero downstream devices\n");
+		return -EINVAL;
+	}
+
+	ksv_fifo = kcalloc(DRM_HDCP_KSV_LEN, num_downstream, GFP_KERNEL);
+	if (!ksv_fifo) {
+		drm_dbg_kms(&dev_priv->drm, "Out of mem: ksv_fifo\n");
+		return -ENOMEM;
+	}
+
+	ret = shim->read_ksv_fifo(dig_port, num_downstream, ksv_fifo);
+	if (ret)
+		goto err;
+
+	if (drm_hdcp_check_ksvs_revoked(&dev_priv->drm, ksv_fifo,
+					num_downstream) > 0) {
+		drm_err(&dev_priv->drm, "Revoked Ksv(s) in ksv_fifo\n");
+		ret = -EPERM;
+		goto err;
+	}
+
+	/*
+	 * When V prime mismatches, DP Spec mandates re-read of
+	 * V prime atleast twice.
+	 */
+	for (i = 0; i < tries; i++) {
+		ret = intel_hdcp_validate_v_prime(connector, shim,
+						  ksv_fifo, num_downstream,
+						  bstatus);
+		if (!ret)
+			break;
+	}
+
+	if (i == tries) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "V Prime validation failed.(%d)\n", ret);
+		goto err;
+	}
+
+	drm_dbg_kms(&dev_priv->drm, "HDCP is enabled (%d downstream devices)\n",
+		    num_downstream);
+	ret = 0;
+err:
+	kfree(ksv_fifo);
+	return ret;
+}
+
+/* Implements Part 1 of the HDCP authorization procedure */
+static int intel_hdcp_auth(struct intel_connector *connector)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_hdcp *hdcp = &connector->hdcp;
+	const struct intel_hdcp_shim *shim = hdcp->shim;
+	enum transcoder cpu_transcoder = connector->hdcp.cpu_transcoder;
+	enum port port = dig_port->base.port;
+	unsigned long r0_prime_gen_start;
+	int ret, i, tries = 2;
+	union {
+		u32 reg[2];
+		u8 shim[DRM_HDCP_AN_LEN];
+	} an;
+	union {
+		u32 reg[2];
+		u8 shim[DRM_HDCP_KSV_LEN];
+	} bksv;
+	union {
+		u32 reg;
+		u8 shim[DRM_HDCP_RI_LEN];
+	} ri;
+	bool repeater_present, hdcp_capable;
+
+	/*
+	 * Detects whether the display is HDCP capable. Although we check for
+	 * valid Bksv below, the HDCP over DP spec requires that we check
+	 * whether the display supports HDCP before we write An. For HDMI
+	 * displays, this is not necessary.
+	 */
+	if (shim->hdcp_capable) {
+		ret = shim->hdcp_capable(dig_port, &hdcp_capable);
+		if (ret)
+			return ret;
+		if (!hdcp_capable) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "Panel is not HDCP capable\n");
+			return -EINVAL;
+		}
+	}
+
+	/* Initialize An with 2 random values and acquire it */
+	for (i = 0; i < 2; i++)
+		intel_de_write(dev_priv,
+			       HDCP_ANINIT(dev_priv, cpu_transcoder, port),
+			       get_random_u32());
+	intel_de_write(dev_priv, HDCP_CONF(dev_priv, cpu_transcoder, port),
+		       HDCP_CONF_CAPTURE_AN);
+
+	/* Wait for An to be acquired */
+	if (intel_de_wait_for_set(dev_priv,
+				  HDCP_STATUS(dev_priv, cpu_transcoder, port),
+				  HDCP_STATUS_AN_READY, 1)) {
+		drm_err(&dev_priv->drm, "Timed out waiting for An\n");
+		return -ETIMEDOUT;
+	}
+
+	an.reg[0] = intel_de_read(dev_priv,
+				  HDCP_ANLO(dev_priv, cpu_transcoder, port));
+	an.reg[1] = intel_de_read(dev_priv,
+				  HDCP_ANHI(dev_priv, cpu_transcoder, port));
+	ret = shim->write_an_aksv(dig_port, an.shim);
+	if (ret)
+		return ret;
+
+	r0_prime_gen_start = jiffies;
+
+	memset(&bksv, 0, sizeof(bksv));
+
+	ret = intel_hdcp_read_valid_bksv(dig_port, shim, bksv.shim);
+	if (ret < 0)
+		return ret;
+
+	if (drm_hdcp_check_ksvs_revoked(&dev_priv->drm, bksv.shim, 1) > 0) {
+		drm_err(&dev_priv->drm, "BKSV is revoked\n");
+		return -EPERM;
+	}
+
+	intel_de_write(dev_priv, HDCP_BKSVLO(dev_priv, cpu_transcoder, port),
+		       bksv.reg[0]);
+	intel_de_write(dev_priv, HDCP_BKSVHI(dev_priv, cpu_transcoder, port),
+		       bksv.reg[1]);
+
+	ret = shim->repeater_present(dig_port, &repeater_present);
+	if (ret)
+		return ret;
+	if (repeater_present)
+		intel_de_write(dev_priv, HDCP_REP_CTL,
+			       intel_hdcp_get_repeater_ctl(dev_priv, cpu_transcoder, port));
+
+	ret = shim->toggle_signalling(dig_port, cpu_transcoder, true);
+	if (ret)
+		return ret;
+
+	intel_de_write(dev_priv, HDCP_CONF(dev_priv, cpu_transcoder, port),
+		       HDCP_CONF_AUTH_AND_ENC);
+
+	/* Wait for R0 ready */
+	if (wait_for(intel_de_read(dev_priv, HDCP_STATUS(dev_priv, cpu_transcoder, port)) &
+		     (HDCP_STATUS_R0_READY | HDCP_STATUS_ENC), 1)) {
+		drm_err(&dev_priv->drm, "Timed out waiting for R0 ready\n");
+		return -ETIMEDOUT;
+	}
+
+	/*
+	 * Wait for R0' to become available. The spec says 100ms from Aksv, but
+	 * some monitors can take longer than this. We'll set the timeout at
+	 * 300ms just to be sure.
+	 *
+	 * On DP, there's an R0_READY bit available but no such bit
+	 * exists on HDMI. Since the upper-bound is the same, we'll just do
+	 * the stupid thing instead of polling on one and not the other.
+	 */
+	wait_remaining_ms_from_jiffies(r0_prime_gen_start, 300);
+
+	tries = 3;
+
+	/*
+	 * DP HDCP Spec mandates the two more reattempt to read R0, incase
+	 * of R0 mismatch.
+	 */
+	for (i = 0; i < tries; i++) {
+		ri.reg = 0;
+		ret = shim->read_ri_prime(dig_port, ri.shim);
+		if (ret)
+			return ret;
+		intel_de_write(dev_priv,
+			       HDCP_RPRIME(dev_priv, cpu_transcoder, port),
+			       ri.reg);
+
+		/* Wait for Ri prime match */
+		if (!wait_for(intel_de_read(dev_priv, HDCP_STATUS(dev_priv, cpu_transcoder, port)) &
+			      (HDCP_STATUS_RI_MATCH | HDCP_STATUS_ENC), 1))
+			break;
+	}
+
+	if (i == tries) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Timed out waiting for Ri prime match (%x)\n",
+			    intel_de_read(dev_priv, HDCP_STATUS(dev_priv,
+					  cpu_transcoder, port)));
+		return -ETIMEDOUT;
+	}
+
+	/* Wait for encryption confirmation */
+	if (intel_de_wait_for_set(dev_priv,
+				  HDCP_STATUS(dev_priv, cpu_transcoder, port),
+				  HDCP_STATUS_ENC,
+				  HDCP_ENCRYPT_STATUS_CHANGE_TIMEOUT_MS)) {
+		drm_err(&dev_priv->drm, "Timed out waiting for encryption\n");
+		return -ETIMEDOUT;
+	}
+
+	/* DP MST Auth Part 1 Step 2.a and Step 2.b */
+	if (shim->stream_encryption) {
+		ret = shim->stream_encryption(connector, true);
+		if (ret) {
+			drm_err(&dev_priv->drm, "[%s:%d] Failed to enable HDCP 1.4 stream enc\n",
+				connector->base.name, connector->base.base.id);
+			return ret;
+		}
+		drm_dbg_kms(&dev_priv->drm, "HDCP 1.4 transcoder: %s stream encrypted\n",
+			    transcoder_name(hdcp->stream_transcoder));
+	}
+
+	if (repeater_present)
+		return intel_hdcp_auth_downstream(connector);
+
+	drm_dbg_kms(&dev_priv->drm, "HDCP is enabled (no repeater present)\n");
+	return 0;
+}
+
+static int _intel_hdcp_disable(struct intel_connector *connector)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_hdcp *hdcp = &connector->hdcp;
+	enum port port = dig_port->base.port;
+	enum transcoder cpu_transcoder = hdcp->cpu_transcoder;
+	u32 repeater_ctl;
+	int ret;
+
+	drm_dbg_kms(&dev_priv->drm, "[%s:%d] HDCP is being disabled...\n",
+		    connector->base.name, connector->base.base.id);
+
+	if (hdcp->shim->stream_encryption) {
+		ret = hdcp->shim->stream_encryption(connector, false);
+		if (ret) {
+			drm_err(&dev_priv->drm, "[%s:%d] Failed to disable HDCP 1.4 stream enc\n",
+				connector->base.name, connector->base.base.id);
+			return ret;
+		}
+		drm_dbg_kms(&dev_priv->drm, "HDCP 1.4 transcoder: %s stream encryption disabled\n",
+			    transcoder_name(hdcp->stream_transcoder));
+		/*
+		 * If there are other connectors on this port using HDCP,
+		 * don't disable it until it disabled HDCP encryption for
+		 * all connectors in MST topology.
+		 */
+		if (dig_port->num_hdcp_streams > 0)
+			return 0;
+	}
+
+	hdcp->hdcp_encrypted = false;
+	intel_de_write(dev_priv, HDCP_CONF(dev_priv, cpu_transcoder, port), 0);
+	if (intel_de_wait_for_clear(dev_priv,
+				    HDCP_STATUS(dev_priv, cpu_transcoder, port),
+				    ~0, HDCP_ENCRYPT_STATUS_CHANGE_TIMEOUT_MS)) {
+		drm_err(&dev_priv->drm,
+			"Failed to disable HDCP, timeout clearing status\n");
+		return -ETIMEDOUT;
+	}
+
+	repeater_ctl = intel_hdcp_get_repeater_ctl(dev_priv, cpu_transcoder,
+						   port);
+	intel_de_write(dev_priv, HDCP_REP_CTL,
+		       intel_de_read(dev_priv, HDCP_REP_CTL) & ~repeater_ctl);
+
+	ret = hdcp->shim->toggle_signalling(dig_port, cpu_transcoder, false);
+	if (ret) {
+		drm_err(&dev_priv->drm, "Failed to disable HDCP signalling\n");
+		return ret;
+	}
+
+	drm_dbg_kms(&dev_priv->drm, "HDCP is disabled\n");
+	return 0;
+}
+
+static int _intel_hdcp_enable(struct intel_connector *connector)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_hdcp *hdcp = &connector->hdcp;
+	int i, ret, tries = 3;
+
+	drm_dbg_kms(&dev_priv->drm, "[%s:%d] HDCP is being enabled...\n",
+		    connector->base.name, connector->base.base.id);
+
+	if (!hdcp_key_loadable(dev_priv)) {
+		drm_err(&dev_priv->drm, "HDCP key Load is not possible\n");
+		return -ENXIO;
+	}
+
+	for (i = 0; i < KEY_LOAD_TRIES; i++) {
+		ret = intel_hdcp_load_keys(dev_priv);
+		if (!ret)
+			break;
+		intel_hdcp_clear_keys(dev_priv);
+	}
+	if (ret) {
+		drm_err(&dev_priv->drm, "Could not load HDCP keys, (%d)\n",
+			ret);
+		return ret;
+	}
+
+	/* Incase of authentication failures, HDCP spec expects reauth. */
+	for (i = 0; i < tries; i++) {
+		ret = intel_hdcp_auth(connector);
+		if (!ret) {
+			hdcp->hdcp_encrypted = true;
+			return 0;
+		}
+
+		drm_dbg_kms(&dev_priv->drm, "HDCP Auth failure (%d)\n", ret);
+
+		/* Ensuring HDCP encryption and signalling are stopped. */
+		_intel_hdcp_disable(connector);
+	}
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "HDCP authentication failed (%d tries/%d)\n", tries, ret);
+	return ret;
+}
+
+static struct intel_connector *intel_hdcp_to_connector(struct intel_hdcp *hdcp)
+{
+	return container_of(hdcp, struct intel_connector, hdcp);
+}
+
+static void intel_hdcp_update_value(struct intel_connector *connector,
+				    u64 value, bool update_property)
+{
+	struct drm_device *dev = connector->base.dev;
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct intel_hdcp *hdcp = &connector->hdcp;
+
+	drm_WARN_ON(connector->base.dev, !mutex_is_locked(&hdcp->mutex));
+
+	if (hdcp->value == value)
+		return;
+
+	drm_WARN_ON(dev, !mutex_is_locked(&dig_port->hdcp_mutex));
+
+	if (hdcp->value == DRM_MODE_CONTENT_PROTECTION_ENABLED) {
+		if (!drm_WARN_ON(dev, dig_port->num_hdcp_streams == 0))
+			dig_port->num_hdcp_streams--;
+	} else if (value == DRM_MODE_CONTENT_PROTECTION_ENABLED) {
+		dig_port->num_hdcp_streams++;
+	}
+
+	hdcp->value = value;
+	if (update_property) {
+		drm_connector_get(&connector->base);
+		schedule_work(&hdcp->prop_work);
+	}
+}
+
+/* Implements Part 3 of the HDCP authorization procedure */
+static int intel_hdcp_check_link(struct intel_connector *connector)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_hdcp *hdcp = &connector->hdcp;
+	enum port port = dig_port->base.port;
+	enum transcoder cpu_transcoder;
+	int ret = 0;
+
+	mutex_lock(&hdcp->mutex);
+	mutex_lock(&dig_port->hdcp_mutex);
+
+	cpu_transcoder = hdcp->cpu_transcoder;
+
+	/* Check_link valid only when HDCP1.4 is enabled */
+	if (hdcp->value != DRM_MODE_CONTENT_PROTECTION_ENABLED ||
+	    !hdcp->hdcp_encrypted) {
+		ret = -EINVAL;
+		goto out;
+	}
+
+	if (drm_WARN_ON(&dev_priv->drm,
+			!intel_hdcp_in_use(dev_priv, cpu_transcoder, port))) {
+		drm_err(&dev_priv->drm,
+			"%s:%d HDCP link stopped encryption,%x\n",
+			connector->base.name, connector->base.base.id,
+			intel_de_read(dev_priv, HDCP_STATUS(dev_priv, cpu_transcoder, port)));
+		ret = -ENXIO;
+		intel_hdcp_update_value(connector,
+					DRM_MODE_CONTENT_PROTECTION_DESIRED,
+					true);
+		goto out;
+	}
+
+	if (hdcp->shim->check_link(dig_port, connector)) {
+		if (hdcp->value != DRM_MODE_CONTENT_PROTECTION_UNDESIRED) {
+			intel_hdcp_update_value(connector,
+				DRM_MODE_CONTENT_PROTECTION_ENABLED, true);
+		}
+		goto out;
+	}
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "[%s:%d] HDCP link failed, retrying authentication\n",
+		    connector->base.name, connector->base.base.id);
+
+	ret = _intel_hdcp_disable(connector);
+	if (ret) {
+		drm_err(&dev_priv->drm, "Failed to disable hdcp (%d)\n", ret);
+		intel_hdcp_update_value(connector,
+					DRM_MODE_CONTENT_PROTECTION_DESIRED,
+					true);
+		goto out;
+	}
+
+	ret = _intel_hdcp_enable(connector);
+	if (ret) {
+		drm_err(&dev_priv->drm, "Failed to enable hdcp (%d)\n", ret);
+		intel_hdcp_update_value(connector,
+					DRM_MODE_CONTENT_PROTECTION_DESIRED,
+					true);
+		goto out;
+	}
+
+out:
+	mutex_unlock(&dig_port->hdcp_mutex);
+	mutex_unlock(&hdcp->mutex);
+	return ret;
+}
+
+static void intel_hdcp_prop_work(struct work_struct *work)
+{
+	struct intel_hdcp *hdcp = container_of(work, struct intel_hdcp,
+					       prop_work);
+	struct intel_connector *connector = intel_hdcp_to_connector(hdcp);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+
+	drm_modeset_lock(&dev_priv->drm.mode_config.connection_mutex, NULL);
+	mutex_lock(&hdcp->mutex);
+
+	/*
+	 * This worker is only used to flip between ENABLED/DESIRED. Either of
+	 * those to UNDESIRED is handled by core. If value == UNDESIRED,
+	 * we're running just after hdcp has been disabled, so just exit
+	 */
+	if (hdcp->value != DRM_MODE_CONTENT_PROTECTION_UNDESIRED)
+		drm_hdcp_update_content_protection(&connector->base,
+						   hdcp->value);
+
+	mutex_unlock(&hdcp->mutex);
+	drm_modeset_unlock(&dev_priv->drm.mode_config.connection_mutex);
+
+	drm_connector_put(&connector->base);
+}
+
+bool is_hdcp_supported(struct drm_i915_private *dev_priv, enum port port)
+{
+	return RUNTIME_INFO(dev_priv)->has_hdcp &&
+		(DISPLAY_VER(dev_priv) >= 12 || port < PORT_E);
+}
+
+static int
+hdcp2_prepare_ake_init(struct intel_connector *connector,
+		       struct hdcp2_ake_init *ake_data)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct hdcp_port_data *data = &dig_port->hdcp_port_data;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct i915_hdcp_comp_master *comp;
+	int ret;
+
+	mutex_lock(&dev_priv->display.hdcp.comp_mutex);
+	comp = dev_priv->display.hdcp.master;
+
+	if (!comp || !comp->ops) {
+		mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
+		return -EINVAL;
+	}
+
+	ret = comp->ops->initiate_hdcp2_session(comp->mei_dev, data, ake_data);
+	if (ret)
+		drm_dbg_kms(&dev_priv->drm, "Prepare_ake_init failed. %d\n",
+			    ret);
+	mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
+
+	return ret;
+}
+
+static int
+hdcp2_verify_rx_cert_prepare_km(struct intel_connector *connector,
+				struct hdcp2_ake_send_cert *rx_cert,
+				bool *paired,
+				struct hdcp2_ake_no_stored_km *ek_pub_km,
+				size_t *msg_sz)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct hdcp_port_data *data = &dig_port->hdcp_port_data;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct i915_hdcp_comp_master *comp;
+	int ret;
+
+	mutex_lock(&dev_priv->display.hdcp.comp_mutex);
+	comp = dev_priv->display.hdcp.master;
+
+	if (!comp || !comp->ops) {
+		mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
+		return -EINVAL;
+	}
+
+	ret = comp->ops->verify_receiver_cert_prepare_km(comp->mei_dev, data,
+							 rx_cert, paired,
+							 ek_pub_km, msg_sz);
+	if (ret < 0)
+		drm_dbg_kms(&dev_priv->drm, "Verify rx_cert failed. %d\n",
+			    ret);
+	mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
+
+	return ret;
+}
+
+static int hdcp2_verify_hprime(struct intel_connector *connector,
+			       struct hdcp2_ake_send_hprime *rx_hprime)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct hdcp_port_data *data = &dig_port->hdcp_port_data;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct i915_hdcp_comp_master *comp;
+	int ret;
+
+	mutex_lock(&dev_priv->display.hdcp.comp_mutex);
+	comp = dev_priv->display.hdcp.master;
+
+	if (!comp || !comp->ops) {
+		mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
+		return -EINVAL;
+	}
+
+	ret = comp->ops->verify_hprime(comp->mei_dev, data, rx_hprime);
+	if (ret < 0)
+		drm_dbg_kms(&dev_priv->drm, "Verify hprime failed. %d\n", ret);
+	mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
+
+	return ret;
+}
+
+static int
+hdcp2_store_pairing_info(struct intel_connector *connector,
+			 struct hdcp2_ake_send_pairing_info *pairing_info)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct hdcp_port_data *data = &dig_port->hdcp_port_data;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct i915_hdcp_comp_master *comp;
+	int ret;
+
+	mutex_lock(&dev_priv->display.hdcp.comp_mutex);
+	comp = dev_priv->display.hdcp.master;
+
+	if (!comp || !comp->ops) {
+		mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
+		return -EINVAL;
+	}
+
+	ret = comp->ops->store_pairing_info(comp->mei_dev, data, pairing_info);
+	if (ret < 0)
+		drm_dbg_kms(&dev_priv->drm, "Store pairing info failed. %d\n",
+			    ret);
+	mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
+
+	return ret;
+}
+
+static int
+hdcp2_prepare_lc_init(struct intel_connector *connector,
+		      struct hdcp2_lc_init *lc_init)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct hdcp_port_data *data = &dig_port->hdcp_port_data;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct i915_hdcp_comp_master *comp;
+	int ret;
+
+	mutex_lock(&dev_priv->display.hdcp.comp_mutex);
+	comp = dev_priv->display.hdcp.master;
+
+	if (!comp || !comp->ops) {
+		mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
+		return -EINVAL;
+	}
+
+	ret = comp->ops->initiate_locality_check(comp->mei_dev, data, lc_init);
+	if (ret < 0)
+		drm_dbg_kms(&dev_priv->drm, "Prepare lc_init failed. %d\n",
+			    ret);
+	mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
+
+	return ret;
+}
+
+static int
+hdcp2_verify_lprime(struct intel_connector *connector,
+		    struct hdcp2_lc_send_lprime *rx_lprime)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct hdcp_port_data *data = &dig_port->hdcp_port_data;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct i915_hdcp_comp_master *comp;
+	int ret;
+
+	mutex_lock(&dev_priv->display.hdcp.comp_mutex);
+	comp = dev_priv->display.hdcp.master;
+
+	if (!comp || !comp->ops) {
+		mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
+		return -EINVAL;
+	}
+
+	ret = comp->ops->verify_lprime(comp->mei_dev, data, rx_lprime);
+	if (ret < 0)
+		drm_dbg_kms(&dev_priv->drm, "Verify L_Prime failed. %d\n",
+			    ret);
+	mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
+
+	return ret;
+}
+
+static int hdcp2_prepare_skey(struct intel_connector *connector,
+			      struct hdcp2_ske_send_eks *ske_data)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct hdcp_port_data *data = &dig_port->hdcp_port_data;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct i915_hdcp_comp_master *comp;
+	int ret;
+
+	mutex_lock(&dev_priv->display.hdcp.comp_mutex);
+	comp = dev_priv->display.hdcp.master;
+
+	if (!comp || !comp->ops) {
+		mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
+		return -EINVAL;
+	}
+
+	ret = comp->ops->get_session_key(comp->mei_dev, data, ske_data);
+	if (ret < 0)
+		drm_dbg_kms(&dev_priv->drm, "Get session key failed. %d\n",
+			    ret);
+	mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
+
+	return ret;
+}
+
+static int
+hdcp2_verify_rep_topology_prepare_ack(struct intel_connector *connector,
+				      struct hdcp2_rep_send_receiverid_list
+								*rep_topology,
+				      struct hdcp2_rep_send_ack *rep_send_ack)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct hdcp_port_data *data = &dig_port->hdcp_port_data;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct i915_hdcp_comp_master *comp;
+	int ret;
+
+	mutex_lock(&dev_priv->display.hdcp.comp_mutex);
+	comp = dev_priv->display.hdcp.master;
+
+	if (!comp || !comp->ops) {
+		mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
+		return -EINVAL;
+	}
+
+	ret = comp->ops->repeater_check_flow_prepare_ack(comp->mei_dev, data,
+							 rep_topology,
+							 rep_send_ack);
+	if (ret < 0)
+		drm_dbg_kms(&dev_priv->drm,
+			    "Verify rep topology failed. %d\n", ret);
+	mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
+
+	return ret;
+}
+
+static int
+hdcp2_verify_mprime(struct intel_connector *connector,
+		    struct hdcp2_rep_stream_ready *stream_ready)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct hdcp_port_data *data = &dig_port->hdcp_port_data;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct i915_hdcp_comp_master *comp;
+	int ret;
+
+	mutex_lock(&dev_priv->display.hdcp.comp_mutex);
+	comp = dev_priv->display.hdcp.master;
+
+	if (!comp || !comp->ops) {
+		mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
+		return -EINVAL;
+	}
+
+	ret = comp->ops->verify_mprime(comp->mei_dev, data, stream_ready);
+	if (ret < 0)
+		drm_dbg_kms(&dev_priv->drm, "Verify mprime failed. %d\n", ret);
+	mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
+
+	return ret;
+}
+
+static int hdcp2_authenticate_port(struct intel_connector *connector)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct hdcp_port_data *data = &dig_port->hdcp_port_data;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct i915_hdcp_comp_master *comp;
+	int ret;
+
+	mutex_lock(&dev_priv->display.hdcp.comp_mutex);
+	comp = dev_priv->display.hdcp.master;
+
+	if (!comp || !comp->ops) {
+		mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
+		return -EINVAL;
+	}
+
+	ret = comp->ops->enable_hdcp_authentication(comp->mei_dev, data);
+	if (ret < 0)
+		drm_dbg_kms(&dev_priv->drm, "Enable hdcp auth failed. %d\n",
+			    ret);
+	mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
+
+	return ret;
+}
+
+static int hdcp2_close_mei_session(struct intel_connector *connector)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct i915_hdcp_comp_master *comp;
+	int ret;
+
+	mutex_lock(&dev_priv->display.hdcp.comp_mutex);
+	comp = dev_priv->display.hdcp.master;
+
+	if (!comp || !comp->ops) {
+		mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
+		return -EINVAL;
+	}
+
+	ret = comp->ops->close_hdcp_session(comp->mei_dev,
+					     &dig_port->hdcp_port_data);
+	mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
+
+	return ret;
+}
+
+static int hdcp2_deauthenticate_port(struct intel_connector *connector)
+{
+	return hdcp2_close_mei_session(connector);
+}
+
+/* Authentication flow starts from here */
+static int hdcp2_authentication_key_exchange(struct intel_connector *connector)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_hdcp *hdcp = &connector->hdcp;
+	union {
+		struct hdcp2_ake_init ake_init;
+		struct hdcp2_ake_send_cert send_cert;
+		struct hdcp2_ake_no_stored_km no_stored_km;
+		struct hdcp2_ake_send_hprime send_hprime;
+		struct hdcp2_ake_send_pairing_info pairing_info;
+	} msgs;
+	const struct intel_hdcp_shim *shim = hdcp->shim;
+	size_t size;
+	int ret;
+
+	/* Init for seq_num */
+	hdcp->seq_num_v = 0;
+	hdcp->seq_num_m = 0;
+
+	ret = hdcp2_prepare_ake_init(connector, &msgs.ake_init);
+	if (ret < 0)
+		return ret;
+
+	ret = shim->write_2_2_msg(dig_port, &msgs.ake_init,
+				  sizeof(msgs.ake_init));
+	if (ret < 0)
+		return ret;
+
+	ret = shim->read_2_2_msg(dig_port, HDCP_2_2_AKE_SEND_CERT,
+				 &msgs.send_cert, sizeof(msgs.send_cert));
+	if (ret < 0)
+		return ret;
+
+	if (msgs.send_cert.rx_caps[0] != HDCP_2_2_RX_CAPS_VERSION_VAL) {
+		drm_dbg_kms(&dev_priv->drm, "cert.rx_caps dont claim HDCP2.2\n");
+		return -EINVAL;
+	}
+
+	hdcp->is_repeater = HDCP_2_2_RX_REPEATER(msgs.send_cert.rx_caps[2]);
+
+	if (drm_hdcp_check_ksvs_revoked(&dev_priv->drm,
+					msgs.send_cert.cert_rx.receiver_id,
+					1) > 0) {
+		drm_err(&dev_priv->drm, "Receiver ID is revoked\n");
+		return -EPERM;
+	}
+
+	/*
+	 * Here msgs.no_stored_km will hold msgs corresponding to the km
+	 * stored also.
+	 */
+	ret = hdcp2_verify_rx_cert_prepare_km(connector, &msgs.send_cert,
+					      &hdcp->is_paired,
+					      &msgs.no_stored_km, &size);
+	if (ret < 0)
+		return ret;
+
+	ret = shim->write_2_2_msg(dig_port, &msgs.no_stored_km, size);
+	if (ret < 0)
+		return ret;
+
+	ret = shim->read_2_2_msg(dig_port, HDCP_2_2_AKE_SEND_HPRIME,
+				 &msgs.send_hprime, sizeof(msgs.send_hprime));
+	if (ret < 0)
+		return ret;
+
+	ret = hdcp2_verify_hprime(connector, &msgs.send_hprime);
+	if (ret < 0)
+		return ret;
+
+	if (!hdcp->is_paired) {
+		/* Pairing is required */
+		ret = shim->read_2_2_msg(dig_port,
+					 HDCP_2_2_AKE_SEND_PAIRING_INFO,
+					 &msgs.pairing_info,
+					 sizeof(msgs.pairing_info));
+		if (ret < 0)
+			return ret;
+
+		ret = hdcp2_store_pairing_info(connector, &msgs.pairing_info);
+		if (ret < 0)
+			return ret;
+		hdcp->is_paired = true;
+	}
+
+	return 0;
+}
+
+static int hdcp2_locality_check(struct intel_connector *connector)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct intel_hdcp *hdcp = &connector->hdcp;
+	union {
+		struct hdcp2_lc_init lc_init;
+		struct hdcp2_lc_send_lprime send_lprime;
+	} msgs;
+	const struct intel_hdcp_shim *shim = hdcp->shim;
+	int tries = HDCP2_LC_RETRY_CNT, ret, i;
+
+	for (i = 0; i < tries; i++) {
+		ret = hdcp2_prepare_lc_init(connector, &msgs.lc_init);
+		if (ret < 0)
+			continue;
+
+		ret = shim->write_2_2_msg(dig_port, &msgs.lc_init,
+				      sizeof(msgs.lc_init));
+		if (ret < 0)
+			continue;
+
+		ret = shim->read_2_2_msg(dig_port,
+					 HDCP_2_2_LC_SEND_LPRIME,
+					 &msgs.send_lprime,
+					 sizeof(msgs.send_lprime));
+		if (ret < 0)
+			continue;
+
+		ret = hdcp2_verify_lprime(connector, &msgs.send_lprime);
+		if (!ret)
+			break;
+	}
+
+	return ret;
+}
+
+static int hdcp2_session_key_exchange(struct intel_connector *connector)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct intel_hdcp *hdcp = &connector->hdcp;
+	struct hdcp2_ske_send_eks send_eks;
+	int ret;
+
+	ret = hdcp2_prepare_skey(connector, &send_eks);
+	if (ret < 0)
+		return ret;
+
+	ret = hdcp->shim->write_2_2_msg(dig_port, &send_eks,
+					sizeof(send_eks));
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static
+int _hdcp2_propagate_stream_management_info(struct intel_connector *connector)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct hdcp_port_data *data = &dig_port->hdcp_port_data;
+	struct intel_hdcp *hdcp = &connector->hdcp;
+	union {
+		struct hdcp2_rep_stream_manage stream_manage;
+		struct hdcp2_rep_stream_ready stream_ready;
+	} msgs;
+	const struct intel_hdcp_shim *shim = hdcp->shim;
+	int ret, streams_size_delta, i;
+
+	if (connector->hdcp.seq_num_m > HDCP_2_2_SEQ_NUM_MAX)
+		return -ERANGE;
+
+	/* Prepare RepeaterAuth_Stream_Manage msg */
+	msgs.stream_manage.msg_id = HDCP_2_2_REP_STREAM_MANAGE;
+	drm_hdcp_cpu_to_be24(msgs.stream_manage.seq_num_m, hdcp->seq_num_m);
+
+	msgs.stream_manage.k = cpu_to_be16(data->k);
+
+	for (i = 0; i < data->k; i++) {
+		msgs.stream_manage.streams[i].stream_id = data->streams[i].stream_id;
+		msgs.stream_manage.streams[i].stream_type = data->streams[i].stream_type;
+	}
+
+	streams_size_delta = (HDCP_2_2_MAX_CONTENT_STREAMS_CNT - data->k) *
+				sizeof(struct hdcp2_streamid_type);
+	/* Send it to Repeater */
+	ret = shim->write_2_2_msg(dig_port, &msgs.stream_manage,
+				  sizeof(msgs.stream_manage) - streams_size_delta);
+	if (ret < 0)
+		goto out;
+
+	ret = shim->read_2_2_msg(dig_port, HDCP_2_2_REP_STREAM_READY,
+				 &msgs.stream_ready, sizeof(msgs.stream_ready));
+	if (ret < 0)
+		goto out;
+
+	data->seq_num_m = hdcp->seq_num_m;
+
+	ret = hdcp2_verify_mprime(connector, &msgs.stream_ready);
+
+out:
+	hdcp->seq_num_m++;
+
+	return ret;
+}
+
+static
+int hdcp2_authenticate_repeater_topology(struct intel_connector *connector)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_hdcp *hdcp = &connector->hdcp;
+	union {
+		struct hdcp2_rep_send_receiverid_list recvid_list;
+		struct hdcp2_rep_send_ack rep_ack;
+	} msgs;
+	const struct intel_hdcp_shim *shim = hdcp->shim;
+	u32 seq_num_v, device_cnt;
+	u8 *rx_info;
+	int ret;
+
+	ret = shim->read_2_2_msg(dig_port, HDCP_2_2_REP_SEND_RECVID_LIST,
+				 &msgs.recvid_list, sizeof(msgs.recvid_list));
+	if (ret < 0)
+		return ret;
+
+	rx_info = msgs.recvid_list.rx_info;
+
+	if (HDCP_2_2_MAX_CASCADE_EXCEEDED(rx_info[1]) ||
+	    HDCP_2_2_MAX_DEVS_EXCEEDED(rx_info[1])) {
+		drm_dbg_kms(&dev_priv->drm, "Topology Max Size Exceeded\n");
+		return -EINVAL;
+	}
+
+	/*
+	 * MST topology is not Type 1 capable if it contains a downstream
+	 * device that is only HDCP 1.x or Legacy HDCP 2.0/2.1 compliant.
+	 */
+	dig_port->hdcp_mst_type1_capable =
+		!HDCP_2_2_HDCP1_DEVICE_CONNECTED(rx_info[1]) &&
+		!HDCP_2_2_HDCP_2_0_REP_CONNECTED(rx_info[1]);
+
+	/* Converting and Storing the seq_num_v to local variable as DWORD */
+	seq_num_v =
+		drm_hdcp_be24_to_cpu((const u8 *)msgs.recvid_list.seq_num_v);
+
+	if (!hdcp->hdcp2_encrypted && seq_num_v) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Non zero Seq_num_v at first RecvId_List msg\n");
+		return -EINVAL;
+	}
+
+	if (seq_num_v < hdcp->seq_num_v) {
+		/* Roll over of the seq_num_v from repeater. Reauthenticate. */
+		drm_dbg_kms(&dev_priv->drm, "Seq_num_v roll over.\n");
+		return -EINVAL;
+	}
+
+	device_cnt = (HDCP_2_2_DEV_COUNT_HI(rx_info[0]) << 4 |
+		      HDCP_2_2_DEV_COUNT_LO(rx_info[1]));
+	if (drm_hdcp_check_ksvs_revoked(&dev_priv->drm,
+					msgs.recvid_list.receiver_ids,
+					device_cnt) > 0) {
+		drm_err(&dev_priv->drm, "Revoked receiver ID(s) is in list\n");
+		return -EPERM;
+	}
+
+	ret = hdcp2_verify_rep_topology_prepare_ack(connector,
+						    &msgs.recvid_list,
+						    &msgs.rep_ack);
+	if (ret < 0)
+		return ret;
+
+	hdcp->seq_num_v = seq_num_v;
+	ret = shim->write_2_2_msg(dig_port, &msgs.rep_ack,
+				  sizeof(msgs.rep_ack));
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int hdcp2_authenticate_sink(struct intel_connector *connector)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+	struct intel_hdcp *hdcp = &connector->hdcp;
+	const struct intel_hdcp_shim *shim = hdcp->shim;
+	int ret;
+
+	ret = hdcp2_authentication_key_exchange(connector);
+	if (ret < 0) {
+		drm_dbg_kms(&i915->drm, "AKE Failed. Err : %d\n", ret);
+		return ret;
+	}
+
+	ret = hdcp2_locality_check(connector);
+	if (ret < 0) {
+		drm_dbg_kms(&i915->drm,
+			    "Locality Check failed. Err : %d\n", ret);
+		return ret;
+	}
+
+	ret = hdcp2_session_key_exchange(connector);
+	if (ret < 0) {
+		drm_dbg_kms(&i915->drm, "SKE Failed. Err : %d\n", ret);
+		return ret;
+	}
+
+	if (shim->config_stream_type) {
+		ret = shim->config_stream_type(dig_port,
+					       hdcp->is_repeater,
+					       hdcp->content_type);
+		if (ret < 0)
+			return ret;
+	}
+
+	if (hdcp->is_repeater) {
+		ret = hdcp2_authenticate_repeater_topology(connector);
+		if (ret < 0) {
+			drm_dbg_kms(&i915->drm,
+				    "Repeater Auth Failed. Err: %d\n", ret);
+			return ret;
+		}
+	}
+
+	return ret;
+}
+
+static int hdcp2_enable_stream_encryption(struct intel_connector *connector)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct hdcp_port_data *data = &dig_port->hdcp_port_data;
+	struct intel_hdcp *hdcp = &connector->hdcp;
+	enum transcoder cpu_transcoder = hdcp->cpu_transcoder;
+	enum port port = dig_port->base.port;
+	int ret = 0;
+
+	if (!(intel_de_read(dev_priv, HDCP2_STATUS(dev_priv, cpu_transcoder, port)) &
+			    LINK_ENCRYPTION_STATUS)) {
+		drm_err(&dev_priv->drm, "[%s:%d] HDCP 2.2 Link is not encrypted\n",
+			connector->base.name, connector->base.base.id);
+		ret = -EPERM;
+		goto link_recover;
+	}
+
+	if (hdcp->shim->stream_2_2_encryption) {
+		ret = hdcp->shim->stream_2_2_encryption(connector, true);
+		if (ret) {
+			drm_err(&dev_priv->drm, "[%s:%d] Failed to enable HDCP 2.2 stream enc\n",
+				connector->base.name, connector->base.base.id);
+			return ret;
+		}
+		drm_dbg_kms(&dev_priv->drm, "HDCP 2.2 transcoder: %s stream encrypted\n",
+			    transcoder_name(hdcp->stream_transcoder));
+	}
+
+	return 0;
+
+link_recover:
+	if (hdcp2_deauthenticate_port(connector) < 0)
+		drm_dbg_kms(&dev_priv->drm, "Port deauth failed.\n");
+
+	dig_port->hdcp_auth_status = false;
+	data->k = 0;
+
+	return ret;
+}
+
+static int hdcp2_enable_encryption(struct intel_connector *connector)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_hdcp *hdcp = &connector->hdcp;
+	enum port port = dig_port->base.port;
+	enum transcoder cpu_transcoder = hdcp->cpu_transcoder;
+	int ret;
+
+	drm_WARN_ON(&dev_priv->drm,
+		    intel_de_read(dev_priv, HDCP2_STATUS(dev_priv, cpu_transcoder, port)) &
+		    LINK_ENCRYPTION_STATUS);
+	if (hdcp->shim->toggle_signalling) {
+		ret = hdcp->shim->toggle_signalling(dig_port, cpu_transcoder,
+						    true);
+		if (ret) {
+			drm_err(&dev_priv->drm,
+				"Failed to enable HDCP signalling. %d\n",
+				ret);
+			return ret;
+		}
+	}
+
+	if (intel_de_read(dev_priv, HDCP2_STATUS(dev_priv, cpu_transcoder, port)) &
+	    LINK_AUTH_STATUS) {
+		/* Link is Authenticated. Now set for Encryption */
+		intel_de_write(dev_priv,
+			       HDCP2_CTL(dev_priv, cpu_transcoder, port),
+			       intel_de_read(dev_priv, HDCP2_CTL(dev_priv, cpu_transcoder, port)) | CTL_LINK_ENCRYPTION_REQ);
+	}
+
+	ret = intel_de_wait_for_set(dev_priv,
+				    HDCP2_STATUS(dev_priv, cpu_transcoder,
+						 port),
+				    LINK_ENCRYPTION_STATUS,
+				    HDCP_ENCRYPT_STATUS_CHANGE_TIMEOUT_MS);
+	dig_port->hdcp_auth_status = true;
+
+	return ret;
+}
+
+static int hdcp2_disable_encryption(struct intel_connector *connector)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_hdcp *hdcp = &connector->hdcp;
+	enum port port = dig_port->base.port;
+	enum transcoder cpu_transcoder = hdcp->cpu_transcoder;
+	int ret;
+
+	drm_WARN_ON(&dev_priv->drm, !(intel_de_read(dev_priv, HDCP2_STATUS(dev_priv, cpu_transcoder, port)) &
+				      LINK_ENCRYPTION_STATUS));
+
+	intel_de_write(dev_priv, HDCP2_CTL(dev_priv, cpu_transcoder, port),
+		       intel_de_read(dev_priv, HDCP2_CTL(dev_priv, cpu_transcoder, port)) & ~CTL_LINK_ENCRYPTION_REQ);
+
+	ret = intel_de_wait_for_clear(dev_priv,
+				      HDCP2_STATUS(dev_priv, cpu_transcoder,
+						   port),
+				      LINK_ENCRYPTION_STATUS,
+				      HDCP_ENCRYPT_STATUS_CHANGE_TIMEOUT_MS);
+	if (ret == -ETIMEDOUT)
+		drm_dbg_kms(&dev_priv->drm, "Disable Encryption Timedout");
+
+	if (hdcp->shim->toggle_signalling) {
+		ret = hdcp->shim->toggle_signalling(dig_port, cpu_transcoder,
+						    false);
+		if (ret) {
+			drm_err(&dev_priv->drm,
+				"Failed to disable HDCP signalling. %d\n",
+				ret);
+			return ret;
+		}
+	}
+
+	return ret;
+}
+
+static int
+hdcp2_propagate_stream_management_info(struct intel_connector *connector)
+{
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+	int i, tries = 3, ret;
+
+	if (!connector->hdcp.is_repeater)
+		return 0;
+
+	for (i = 0; i < tries; i++) {
+		ret = _hdcp2_propagate_stream_management_info(connector);
+		if (!ret)
+			break;
+
+		/* Lets restart the auth incase of seq_num_m roll over */
+		if (connector->hdcp.seq_num_m > HDCP_2_2_SEQ_NUM_MAX) {
+			drm_dbg_kms(&i915->drm,
+				    "seq_num_m roll over.(%d)\n", ret);
+			break;
+		}
+
+		drm_dbg_kms(&i915->drm,
+			    "HDCP2 stream management %d of %d Failed.(%d)\n",
+			    i + 1, tries, ret);
+	}
+
+	return ret;
+}
+
+static int hdcp2_authenticate_and_encrypt(struct intel_connector *connector)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+	int ret = 0, i, tries = 3;
+
+	for (i = 0; i < tries && !dig_port->hdcp_auth_status; i++) {
+		ret = hdcp2_authenticate_sink(connector);
+		if (!ret) {
+			ret = intel_hdcp_prepare_streams(connector);
+			if (ret) {
+				drm_dbg_kms(&i915->drm,
+					    "Prepare streams failed.(%d)\n",
+					    ret);
+				break;
+			}
+
+			ret = hdcp2_propagate_stream_management_info(connector);
+			if (ret) {
+				drm_dbg_kms(&i915->drm,
+					    "Stream management failed.(%d)\n",
+					    ret);
+				break;
+			}
+
+			ret = hdcp2_authenticate_port(connector);
+			if (!ret)
+				break;
+			drm_dbg_kms(&i915->drm, "HDCP2 port auth failed.(%d)\n",
+				    ret);
+		}
+
+		/* Clearing the mei hdcp session */
+		drm_dbg_kms(&i915->drm, "HDCP2.2 Auth %d of %d Failed.(%d)\n",
+			    i + 1, tries, ret);
+		if (hdcp2_deauthenticate_port(connector) < 0)
+			drm_dbg_kms(&i915->drm, "Port deauth failed.\n");
+	}
+
+	if (!ret && !dig_port->hdcp_auth_status) {
+		/*
+		 * Ensuring the required 200mSec min time interval between
+		 * Session Key Exchange and encryption.
+		 */
+		msleep(HDCP_2_2_DELAY_BEFORE_ENCRYPTION_EN);
+		ret = hdcp2_enable_encryption(connector);
+		if (ret < 0) {
+			drm_dbg_kms(&i915->drm,
+				    "Encryption Enable Failed.(%d)\n", ret);
+			if (hdcp2_deauthenticate_port(connector) < 0)
+				drm_dbg_kms(&i915->drm, "Port deauth failed.\n");
+		}
+	}
+
+	if (!ret)
+		ret = hdcp2_enable_stream_encryption(connector);
+
+	return ret;
+}
+
+static int _intel_hdcp2_enable(struct intel_connector *connector)
+{
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+	struct intel_hdcp *hdcp = &connector->hdcp;
+	int ret;
+
+	drm_dbg_kms(&i915->drm, "[%s:%d] HDCP2.2 is being enabled. Type: %d\n",
+		    connector->base.name, connector->base.base.id,
+		    hdcp->content_type);
+
+	ret = hdcp2_authenticate_and_encrypt(connector);
+	if (ret) {
+		drm_dbg_kms(&i915->drm, "HDCP2 Type%d  Enabling Failed. (%d)\n",
+			    hdcp->content_type, ret);
+		return ret;
+	}
+
+	drm_dbg_kms(&i915->drm, "[%s:%d] HDCP2.2 is enabled. Type %d\n",
+		    connector->base.name, connector->base.base.id,
+		    hdcp->content_type);
+
+	hdcp->hdcp2_encrypted = true;
+	return 0;
+}
+
+static int
+_intel_hdcp2_disable(struct intel_connector *connector, bool hdcp2_link_recovery)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+	struct hdcp_port_data *data = &dig_port->hdcp_port_data;
+	struct intel_hdcp *hdcp = &connector->hdcp;
+	int ret;
+
+	drm_dbg_kms(&i915->drm, "[%s:%d] HDCP2.2 is being Disabled\n",
+		    connector->base.name, connector->base.base.id);
+
+	if (hdcp->shim->stream_2_2_encryption) {
+		ret = hdcp->shim->stream_2_2_encryption(connector, false);
+		if (ret) {
+			drm_err(&i915->drm, "[%s:%d] Failed to disable HDCP 2.2 stream enc\n",
+				connector->base.name, connector->base.base.id);
+			return ret;
+		}
+		drm_dbg_kms(&i915->drm, "HDCP 2.2 transcoder: %s stream encryption disabled\n",
+			    transcoder_name(hdcp->stream_transcoder));
+
+		if (dig_port->num_hdcp_streams > 0 && !hdcp2_link_recovery)
+			return 0;
+	}
+
+	ret = hdcp2_disable_encryption(connector);
+
+	if (hdcp2_deauthenticate_port(connector) < 0)
+		drm_dbg_kms(&i915->drm, "Port deauth failed.\n");
+
+	connector->hdcp.hdcp2_encrypted = false;
+	dig_port->hdcp_auth_status = false;
+	data->k = 0;
+
+	return ret;
+}
+
+/* Implements the Link Integrity Check for HDCP2.2 */
+static int intel_hdcp2_check_link(struct intel_connector *connector)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_hdcp *hdcp = &connector->hdcp;
+	enum port port = dig_port->base.port;
+	enum transcoder cpu_transcoder;
+	int ret = 0;
+
+	mutex_lock(&hdcp->mutex);
+	mutex_lock(&dig_port->hdcp_mutex);
+	cpu_transcoder = hdcp->cpu_transcoder;
+
+	/* hdcp2_check_link is expected only when HDCP2.2 is Enabled */
+	if (hdcp->value != DRM_MODE_CONTENT_PROTECTION_ENABLED ||
+	    !hdcp->hdcp2_encrypted) {
+		ret = -EINVAL;
+		goto out;
+	}
+
+	if (drm_WARN_ON(&dev_priv->drm,
+			!intel_hdcp2_in_use(dev_priv, cpu_transcoder, port))) {
+		drm_err(&dev_priv->drm,
+			"HDCP2.2 link stopped the encryption, %x\n",
+			intel_de_read(dev_priv, HDCP2_STATUS(dev_priv, cpu_transcoder, port)));
+		ret = -ENXIO;
+		_intel_hdcp2_disable(connector, true);
+		intel_hdcp_update_value(connector,
+					DRM_MODE_CONTENT_PROTECTION_DESIRED,
+					true);
+		goto out;
+	}
+
+	ret = hdcp->shim->check_2_2_link(dig_port, connector);
+	if (ret == HDCP_LINK_PROTECTED) {
+		if (hdcp->value != DRM_MODE_CONTENT_PROTECTION_UNDESIRED) {
+			intel_hdcp_update_value(connector,
+					DRM_MODE_CONTENT_PROTECTION_ENABLED,
+					true);
+		}
+		goto out;
+	}
+
+	if (ret == HDCP_TOPOLOGY_CHANGE) {
+		if (hdcp->value == DRM_MODE_CONTENT_PROTECTION_UNDESIRED)
+			goto out;
+
+		drm_dbg_kms(&dev_priv->drm,
+			    "HDCP2.2 Downstream topology change\n");
+		ret = hdcp2_authenticate_repeater_topology(connector);
+		if (!ret) {
+			intel_hdcp_update_value(connector,
+					DRM_MODE_CONTENT_PROTECTION_ENABLED,
+					true);
+			goto out;
+		}
+		drm_dbg_kms(&dev_priv->drm,
+			    "[%s:%d] Repeater topology auth failed.(%d)\n",
+			    connector->base.name, connector->base.base.id,
+			    ret);
+	} else {
+		drm_dbg_kms(&dev_priv->drm,
+			    "[%s:%d] HDCP2.2 link failed, retrying auth\n",
+			    connector->base.name, connector->base.base.id);
+	}
+
+	ret = _intel_hdcp2_disable(connector, true);
+	if (ret) {
+		drm_err(&dev_priv->drm,
+			"[%s:%d] Failed to disable hdcp2.2 (%d)\n",
+			connector->base.name, connector->base.base.id, ret);
+		intel_hdcp_update_value(connector,
+				DRM_MODE_CONTENT_PROTECTION_DESIRED, true);
+		goto out;
+	}
+
+	ret = _intel_hdcp2_enable(connector);
+	if (ret) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "[%s:%d] Failed to enable hdcp2.2 (%d)\n",
+			    connector->base.name, connector->base.base.id,
+			    ret);
+		intel_hdcp_update_value(connector,
+					DRM_MODE_CONTENT_PROTECTION_DESIRED,
+					true);
+		goto out;
+	}
+
+out:
+	mutex_unlock(&dig_port->hdcp_mutex);
+	mutex_unlock(&hdcp->mutex);
+	return ret;
+}
+
+static void intel_hdcp_check_work(struct work_struct *work)
+{
+	struct intel_hdcp *hdcp = container_of(to_delayed_work(work),
+					       struct intel_hdcp,
+					       check_work);
+	struct intel_connector *connector = intel_hdcp_to_connector(hdcp);
+
+	if (drm_connector_is_unregistered(&connector->base))
+		return;
+
+	if (!intel_hdcp2_check_link(connector))
+		schedule_delayed_work(&hdcp->check_work,
+				      DRM_HDCP2_CHECK_PERIOD_MS);
+	else if (!intel_hdcp_check_link(connector))
+		schedule_delayed_work(&hdcp->check_work,
+				      DRM_HDCP_CHECK_PERIOD_MS);
+}
+
+static int i915_hdcp_component_bind(struct device *i915_kdev,
+				    struct device *mei_kdev, void *data)
+{
+	struct drm_i915_private *dev_priv = kdev_to_i915(i915_kdev);
+
+	drm_dbg(&dev_priv->drm, "I915 HDCP comp bind\n");
+	mutex_lock(&dev_priv->display.hdcp.comp_mutex);
+	dev_priv->display.hdcp.master = (struct i915_hdcp_comp_master *)data;
+	dev_priv->display.hdcp.master->mei_dev = mei_kdev;
+	mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
+
+	return 0;
+}
+
+static void i915_hdcp_component_unbind(struct device *i915_kdev,
+				       struct device *mei_kdev, void *data)
+{
+	struct drm_i915_private *dev_priv = kdev_to_i915(i915_kdev);
+
+	drm_dbg(&dev_priv->drm, "I915 HDCP comp unbind\n");
+	mutex_lock(&dev_priv->display.hdcp.comp_mutex);
+	dev_priv->display.hdcp.master = NULL;
+	mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
+}
+
+static const struct component_ops i915_hdcp_component_ops = {
+	.bind   = i915_hdcp_component_bind,
+	.unbind = i915_hdcp_component_unbind,
+};
+
+static enum mei_fw_ddi intel_get_mei_fw_ddi_index(enum port port)
+{
+	switch (port) {
+	case PORT_A:
+		return MEI_DDI_A;
+	case PORT_B ... PORT_F:
+		return (enum mei_fw_ddi)port;
+	default:
+		return MEI_DDI_INVALID_PORT;
+	}
+}
+
+static enum mei_fw_tc intel_get_mei_fw_tc(enum transcoder cpu_transcoder)
+{
+	switch (cpu_transcoder) {
+	case TRANSCODER_A ... TRANSCODER_D:
+		return (enum mei_fw_tc)(cpu_transcoder | 0x10);
+	default: /* eDP, DSI TRANSCODERS are non HDCP capable */
+		return MEI_INVALID_TRANSCODER;
+	}
+}
+
+static int initialize_hdcp_port_data(struct intel_connector *connector,
+				     struct intel_digital_port *dig_port,
+				     const struct intel_hdcp_shim *shim)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct hdcp_port_data *data = &dig_port->hdcp_port_data;
+	struct intel_hdcp *hdcp = &connector->hdcp;
+	enum port port = dig_port->base.port;
+
+	if (DISPLAY_VER(dev_priv) < 12)
+		data->fw_ddi = intel_get_mei_fw_ddi_index(port);
+	else
+		/*
+		 * As per ME FW API expectation, for GEN 12+, fw_ddi is filled
+		 * with zero(INVALID PORT index).
+		 */
+		data->fw_ddi = MEI_DDI_INVALID_PORT;
+
+	/*
+	 * As associated transcoder is set and modified at modeset, here fw_tc
+	 * is initialized to zero (invalid transcoder index). This will be
+	 * retained for <Gen12 forever.
+	 */
+	data->fw_tc = MEI_INVALID_TRANSCODER;
+
+	data->port_type = (u8)HDCP_PORT_TYPE_INTEGRATED;
+	data->protocol = (u8)shim->protocol;
+
+	if (!data->streams)
+		data->streams = kcalloc(INTEL_NUM_PIPES(dev_priv),
+					sizeof(struct hdcp2_streamid_type),
+					GFP_KERNEL);
+	if (!data->streams) {
+		drm_err(&dev_priv->drm, "Out of Memory\n");
+		return -ENOMEM;
+	}
+	/* For SST */
+	data->streams[0].stream_id = 0;
+	data->streams[0].stream_type = hdcp->content_type;
+
+	return 0;
+}
+
+static bool is_hdcp2_supported(struct drm_i915_private *dev_priv)
+{
+	if (!IS_ENABLED(CONFIG_INTEL_MEI_HDCP))
+		return false;
+
+	return (DISPLAY_VER(dev_priv) >= 10 ||
+		IS_KABYLAKE(dev_priv) ||
+		IS_COFFEELAKE(dev_priv) ||
+		IS_COMETLAKE(dev_priv));
+}
+
+void intel_hdcp_component_init(struct drm_i915_private *dev_priv)
+{
+	int ret;
+
+	if (!is_hdcp2_supported(dev_priv))
+		return;
+
+	mutex_lock(&dev_priv->display.hdcp.comp_mutex);
+	drm_WARN_ON(&dev_priv->drm, dev_priv->display.hdcp.comp_added);
+
+	dev_priv->display.hdcp.comp_added = true;
+	mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
+	ret = component_add_typed(dev_priv->drm.dev, &i915_hdcp_component_ops,
+				  I915_COMPONENT_HDCP);
+	if (ret < 0) {
+		drm_dbg_kms(&dev_priv->drm, "Failed at component add(%d)\n",
+			    ret);
+		mutex_lock(&dev_priv->display.hdcp.comp_mutex);
+		dev_priv->display.hdcp.comp_added = false;
+		mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
+		return;
+	}
+}
+
+static void intel_hdcp2_init(struct intel_connector *connector,
+			     struct intel_digital_port *dig_port,
+			     const struct intel_hdcp_shim *shim)
+{
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+	struct intel_hdcp *hdcp = &connector->hdcp;
+	int ret;
+
+	ret = initialize_hdcp_port_data(connector, dig_port, shim);
+	if (ret) {
+		drm_dbg_kms(&i915->drm, "Mei hdcp data init failed\n");
+		return;
+	}
+
+	hdcp->hdcp2_supported = true;
+}
+
+int intel_hdcp_init(struct intel_connector *connector,
+		    struct intel_digital_port *dig_port,
+		    const struct intel_hdcp_shim *shim)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_hdcp *hdcp = &connector->hdcp;
+	int ret;
+
+	if (!shim)
+		return -EINVAL;
+
+	if (is_hdcp2_supported(dev_priv))
+		intel_hdcp2_init(connector, dig_port, shim);
+
+	ret =
+	drm_connector_attach_content_protection_property(&connector->base,
+							 hdcp->hdcp2_supported);
+	if (ret) {
+		hdcp->hdcp2_supported = false;
+		kfree(dig_port->hdcp_port_data.streams);
+		return ret;
+	}
+
+	hdcp->shim = shim;
+	mutex_init(&hdcp->mutex);
+	INIT_DELAYED_WORK(&hdcp->check_work, intel_hdcp_check_work);
+	INIT_WORK(&hdcp->prop_work, intel_hdcp_prop_work);
+	init_waitqueue_head(&hdcp->cp_irq_queue);
+
+	return 0;
+}
+
+int intel_hdcp_enable(struct intel_connector *connector,
+		      const struct intel_crtc_state *pipe_config, u8 content_type)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct intel_hdcp *hdcp = &connector->hdcp;
+	unsigned long check_link_interval = DRM_HDCP_CHECK_PERIOD_MS;
+	int ret = -EINVAL;
+
+	if (!hdcp->shim)
+		return -ENOENT;
+
+	if (!connector->encoder) {
+		drm_err(&dev_priv->drm, "[%s:%d] encoder is not initialized\n",
+			connector->base.name, connector->base.base.id);
+		return -ENODEV;
+	}
+
+	mutex_lock(&hdcp->mutex);
+	mutex_lock(&dig_port->hdcp_mutex);
+	drm_WARN_ON(&dev_priv->drm,
+		    hdcp->value == DRM_MODE_CONTENT_PROTECTION_ENABLED);
+	hdcp->content_type = content_type;
+
+	if (intel_crtc_has_type(pipe_config, INTEL_OUTPUT_DP_MST)) {
+		hdcp->cpu_transcoder = pipe_config->mst_master_transcoder;
+		hdcp->stream_transcoder = pipe_config->cpu_transcoder;
+	} else {
+		hdcp->cpu_transcoder = pipe_config->cpu_transcoder;
+		hdcp->stream_transcoder = INVALID_TRANSCODER;
+	}
+
+	if (DISPLAY_VER(dev_priv) >= 12)
+		dig_port->hdcp_port_data.fw_tc = intel_get_mei_fw_tc(hdcp->cpu_transcoder);
+
+	/*
+	 * Considering that HDCP2.2 is more secure than HDCP1.4, If the setup
+	 * is capable of HDCP2.2, it is preferred to use HDCP2.2.
+	 */
+	if (intel_hdcp2_capable(connector)) {
+		ret = _intel_hdcp2_enable(connector);
+		if (!ret)
+			check_link_interval = DRM_HDCP2_CHECK_PERIOD_MS;
+	}
+
+	/*
+	 * When HDCP2.2 fails and Content Type is not Type1, HDCP1.4 will
+	 * be attempted.
+	 */
+	if (ret && intel_hdcp_capable(connector) &&
+	    hdcp->content_type != DRM_MODE_HDCP_CONTENT_TYPE1) {
+		ret = _intel_hdcp_enable(connector);
+	}
+
+	if (!ret) {
+		schedule_delayed_work(&hdcp->check_work, check_link_interval);
+		intel_hdcp_update_value(connector,
+					DRM_MODE_CONTENT_PROTECTION_ENABLED,
+					true);
+	}
+
+	mutex_unlock(&dig_port->hdcp_mutex);
+	mutex_unlock(&hdcp->mutex);
+	return ret;
+}
+
+int intel_hdcp_disable(struct intel_connector *connector)
+{
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct intel_hdcp *hdcp = &connector->hdcp;
+	int ret = 0;
+
+	if (!hdcp->shim)
+		return -ENOENT;
+
+	mutex_lock(&hdcp->mutex);
+	mutex_lock(&dig_port->hdcp_mutex);
+
+	if (hdcp->value == DRM_MODE_CONTENT_PROTECTION_UNDESIRED)
+		goto out;
+
+	intel_hdcp_update_value(connector,
+				DRM_MODE_CONTENT_PROTECTION_UNDESIRED, false);
+	if (hdcp->hdcp2_encrypted)
+		ret = _intel_hdcp2_disable(connector, false);
+	else if (hdcp->hdcp_encrypted)
+		ret = _intel_hdcp_disable(connector);
+
+out:
+	mutex_unlock(&dig_port->hdcp_mutex);
+	mutex_unlock(&hdcp->mutex);
+	cancel_delayed_work_sync(&hdcp->check_work);
+	return ret;
+}
+
+void intel_hdcp_update_pipe(struct intel_atomic_state *state,
+			    struct intel_encoder *encoder,
+			    const struct intel_crtc_state *crtc_state,
+			    const struct drm_connector_state *conn_state)
+{
+	struct intel_connector *connector =
+				to_intel_connector(conn_state->connector);
+	struct intel_hdcp *hdcp = &connector->hdcp;
+	bool content_protection_type_changed, desired_and_not_enabled = false;
+
+	if (!connector->hdcp.shim)
+		return;
+
+	content_protection_type_changed =
+		(conn_state->hdcp_content_type != hdcp->content_type &&
+		 conn_state->content_protection !=
+		 DRM_MODE_CONTENT_PROTECTION_UNDESIRED);
+
+	/*
+	 * During the HDCP encryption session if Type change is requested,
+	 * disable the HDCP and reenable it with new TYPE value.
+	 */
+	if (conn_state->content_protection ==
+	    DRM_MODE_CONTENT_PROTECTION_UNDESIRED ||
+	    content_protection_type_changed)
+		intel_hdcp_disable(connector);
+
+	/*
+	 * Mark the hdcp state as DESIRED after the hdcp disable of type
+	 * change procedure.
+	 */
+	if (content_protection_type_changed) {
+		mutex_lock(&hdcp->mutex);
+		hdcp->value = DRM_MODE_CONTENT_PROTECTION_DESIRED;
+		drm_connector_get(&connector->base);
+		schedule_work(&hdcp->prop_work);
+		mutex_unlock(&hdcp->mutex);
+	}
+
+	if (conn_state->content_protection ==
+	    DRM_MODE_CONTENT_PROTECTION_DESIRED) {
+		mutex_lock(&hdcp->mutex);
+		/* Avoid enabling hdcp, if it already ENABLED */
+		desired_and_not_enabled =
+			hdcp->value != DRM_MODE_CONTENT_PROTECTION_ENABLED;
+		mutex_unlock(&hdcp->mutex);
+		/*
+		 * If HDCP already ENABLED and CP property is DESIRED, schedule
+		 * prop_work to update correct CP property to user space.
+		 */
+		if (!desired_and_not_enabled && !content_protection_type_changed) {
+			drm_connector_get(&connector->base);
+			schedule_work(&hdcp->prop_work);
+		}
+	}
+
+	if (desired_and_not_enabled || content_protection_type_changed)
+		intel_hdcp_enable(connector,
+				  crtc_state,
+				  (u8)conn_state->hdcp_content_type);
+}
+
+void intel_hdcp_component_fini(struct drm_i915_private *dev_priv)
+{
+	mutex_lock(&dev_priv->display.hdcp.comp_mutex);
+	if (!dev_priv->display.hdcp.comp_added) {
+		mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
+		return;
+	}
+
+	dev_priv->display.hdcp.comp_added = false;
+	mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
+
+	component_del(dev_priv->drm.dev, &i915_hdcp_component_ops);
+}
+
+void intel_hdcp_cleanup(struct intel_connector *connector)
+{
+	struct intel_hdcp *hdcp = &connector->hdcp;
+
+	if (!hdcp->shim)
+		return;
+
+	/*
+	 * If the connector is registered, it's possible userspace could kick
+	 * off another HDCP enable, which would re-spawn the workers.
+	 */
+	drm_WARN_ON(connector->base.dev,
+		connector->base.registration_state == DRM_CONNECTOR_REGISTERED);
+
+	/*
+	 * Now that the connector is not registered, check_work won't be run,
+	 * but cancel any outstanding instances of it
+	 */
+	cancel_delayed_work_sync(&hdcp->check_work);
+
+	/*
+	 * We don't cancel prop_work in the same way as check_work since it
+	 * requires connection_mutex which could be held while calling this
+	 * function. Instead, we rely on the connector references grabbed before
+	 * scheduling prop_work to ensure the connector is alive when prop_work
+	 * is run. So if we're in the destroy path (which is where this
+	 * function should be called), we're "guaranteed" that prop_work is not
+	 * active (tl;dr This Should Never Happen).
+	 */
+	drm_WARN_ON(connector->base.dev, work_pending(&hdcp->prop_work));
+
+	mutex_lock(&hdcp->mutex);
+	hdcp->shim = NULL;
+	mutex_unlock(&hdcp->mutex);
+}
+
+void intel_hdcp_atomic_check(struct drm_connector *connector,
+			     struct drm_connector_state *old_state,
+			     struct drm_connector_state *new_state)
+{
+	u64 old_cp = old_state->content_protection;
+	u64 new_cp = new_state->content_protection;
+	struct drm_crtc_state *crtc_state;
+
+	if (!new_state->crtc) {
+		/*
+		 * If the connector is being disabled with CP enabled, mark it
+		 * desired so it's re-enabled when the connector is brought back
+		 */
+		if (old_cp == DRM_MODE_CONTENT_PROTECTION_ENABLED)
+			new_state->content_protection =
+				DRM_MODE_CONTENT_PROTECTION_DESIRED;
+		return;
+	}
+
+	crtc_state = drm_atomic_get_new_crtc_state(new_state->state,
+						   new_state->crtc);
+	/*
+	 * Fix the HDCP uapi content protection state in case of modeset.
+	 * FIXME: As per HDCP content protection property uapi doc, an uevent()
+	 * need to be sent if there is transition from ENABLED->DESIRED.
+	 */
+	if (drm_atomic_crtc_needs_modeset(crtc_state) &&
+	    (old_cp == DRM_MODE_CONTENT_PROTECTION_ENABLED &&
+	    new_cp != DRM_MODE_CONTENT_PROTECTION_UNDESIRED))
+		new_state->content_protection =
+			DRM_MODE_CONTENT_PROTECTION_DESIRED;
+
+	/*
+	 * Nothing to do if the state didn't change, or HDCP was activated since
+	 * the last commit. And also no change in hdcp content type.
+	 */
+	if (old_cp == new_cp ||
+	    (old_cp == DRM_MODE_CONTENT_PROTECTION_DESIRED &&
+	     new_cp == DRM_MODE_CONTENT_PROTECTION_ENABLED)) {
+		if (old_state->hdcp_content_type ==
+				new_state->hdcp_content_type)
+			return;
+	}
+
+	crtc_state->mode_changed = true;
+}
+
+/* Handles the CP_IRQ raised from the DP HDCP sink */
+void intel_hdcp_handle_cp_irq(struct intel_connector *connector)
+{
+	struct intel_hdcp *hdcp = &connector->hdcp;
+
+	if (!hdcp->shim)
+		return;
+
+	atomic_inc(&connector->hdcp.cp_irq_count);
+	wake_up_all(&connector->hdcp.cp_irq_queue);
+
+	schedule_delayed_work(&hdcp->check_work, 0);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.h b/drivers/gpu/drm/i915/display/intel_hdcp.h
new file mode 100644
index 000000000..8f53b0c7f
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.h
@@ -0,0 +1,46 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_HDCP_H__
+#define __INTEL_HDCP_H__
+
+#include <linux/types.h>
+
+#define HDCP_ENCRYPT_STATUS_CHANGE_TIMEOUT_MS	50
+
+struct drm_connector;
+struct drm_connector_state;
+struct drm_i915_private;
+struct intel_atomic_state;
+struct intel_connector;
+struct intel_crtc_state;
+struct intel_encoder;
+struct intel_hdcp_shim;
+struct intel_digital_port;
+enum port;
+enum transcoder;
+
+void intel_hdcp_atomic_check(struct drm_connector *connector,
+			     struct drm_connector_state *old_state,
+			     struct drm_connector_state *new_state);
+int intel_hdcp_init(struct intel_connector *connector,
+		    struct intel_digital_port *dig_port,
+		    const struct intel_hdcp_shim *hdcp_shim);
+int intel_hdcp_enable(struct intel_connector *connector,
+		      const struct intel_crtc_state *pipe_config, u8 content_type);
+int intel_hdcp_disable(struct intel_connector *connector);
+void intel_hdcp_update_pipe(struct intel_atomic_state *state,
+			    struct intel_encoder *encoder,
+			    const struct intel_crtc_state *crtc_state,
+			    const struct drm_connector_state *conn_state);
+bool is_hdcp_supported(struct drm_i915_private *dev_priv, enum port port);
+bool intel_hdcp_capable(struct intel_connector *connector);
+bool intel_hdcp2_capable(struct intel_connector *connector);
+void intel_hdcp_component_init(struct drm_i915_private *dev_priv);
+void intel_hdcp_component_fini(struct drm_i915_private *dev_priv);
+void intel_hdcp_cleanup(struct intel_connector *connector);
+void intel_hdcp_handle_cp_irq(struct intel_connector *connector);
+
+#endif /* __INTEL_HDCP_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_hdcp_regs.h b/drivers/gpu/drm/i915/display/intel_hdcp_regs.h
new file mode 100644
index 000000000..2a3733e89
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_hdcp_regs.h
@@ -0,0 +1,270 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#ifndef __INTEL_HDCP_REGS_H__
+#define __INTEL_HDCP_REGS_H__
+
+#include "i915_reg_defs.h"
+
+/* HDCP Key Registers */
+#define HDCP_KEY_CONF			_MMIO(0x66c00)
+#define  HDCP_AKSV_SEND_TRIGGER		REG_BIT(31)
+#define  HDCP_CLEAR_KEYS_TRIGGER	REG_BIT(30)
+#define  HDCP_KEY_LOAD_TRIGGER		REG_BIT(8)
+#define HDCP_KEY_STATUS			_MMIO(0x66c04)
+#define  HDCP_FUSE_IN_PROGRESS		REG_BIT(7)
+#define  HDCP_FUSE_ERROR		REG_BIT(6)
+#define  HDCP_FUSE_DONE			REG_BIT(5)
+#define  HDCP_KEY_LOAD_STATUS		REG_BIT(1)
+#define  HDCP_KEY_LOAD_DONE		REG_BIT(0)
+#define HDCP_AKSV_LO			_MMIO(0x66c10)
+#define HDCP_AKSV_HI			_MMIO(0x66c14)
+
+/* HDCP Repeater Registers */
+#define HDCP_REP_CTL			_MMIO(0x66d00)
+#define  HDCP_TRANSA_REP_PRESENT	REG_BIT(31)
+#define  HDCP_TRANSB_REP_PRESENT	REG_BIT(30)
+#define  HDCP_TRANSC_REP_PRESENT	REG_BIT(29)
+#define  HDCP_TRANSD_REP_PRESENT	REG_BIT(28)
+#define  HDCP_DDIB_REP_PRESENT		REG_BIT(30)
+#define  HDCP_DDIA_REP_PRESENT		REG_BIT(29)
+#define  HDCP_DDIC_REP_PRESENT		REG_BIT(28)
+#define  HDCP_DDID_REP_PRESENT		REG_BIT(27)
+#define  HDCP_DDIF_REP_PRESENT		REG_BIT(26)
+#define  HDCP_DDIE_REP_PRESENT		REG_BIT(25)
+#define  HDCP_TRANSA_SHA1_M0		(1 << 20)
+#define  HDCP_TRANSB_SHA1_M0		(2 << 20)
+#define  HDCP_TRANSC_SHA1_M0		(3 << 20)
+#define  HDCP_TRANSD_SHA1_M0		(4 << 20)
+#define  HDCP_DDIB_SHA1_M0		(1 << 20)
+#define  HDCP_DDIA_SHA1_M0		(2 << 20)
+#define  HDCP_DDIC_SHA1_M0		(3 << 20)
+#define  HDCP_DDID_SHA1_M0		(4 << 20)
+#define  HDCP_DDIF_SHA1_M0		(5 << 20)
+#define  HDCP_DDIE_SHA1_M0		(6 << 20) /* Bspec says 5? */
+#define  HDCP_SHA1_BUSY			REG_BIT(16)
+#define  HDCP_SHA1_READY		REG_BIT(17)
+#define  HDCP_SHA1_COMPLETE		REG_BIT(18)
+#define  HDCP_SHA1_V_MATCH		REG_BIT(19)
+#define  HDCP_SHA1_TEXT_32		(1 << 1)
+#define  HDCP_SHA1_COMPLETE_HASH	(2 << 1)
+#define  HDCP_SHA1_TEXT_24		(4 << 1)
+#define  HDCP_SHA1_TEXT_16		(5 << 1)
+#define  HDCP_SHA1_TEXT_8		(6 << 1)
+#define  HDCP_SHA1_TEXT_0		(7 << 1)
+#define HDCP_SHA_V_PRIME_H0		_MMIO(0x66d04)
+#define HDCP_SHA_V_PRIME_H1		_MMIO(0x66d08)
+#define HDCP_SHA_V_PRIME_H2		_MMIO(0x66d0C)
+#define HDCP_SHA_V_PRIME_H3		_MMIO(0x66d10)
+#define HDCP_SHA_V_PRIME_H4		_MMIO(0x66d14)
+#define HDCP_SHA_V_PRIME(h)		_MMIO((0x66d04 + (h) * 4))
+#define HDCP_SHA_TEXT			_MMIO(0x66d18)
+
+/* HDCP Auth Registers */
+#define _PORTA_HDCP_AUTHENC		0x66800
+#define _PORTB_HDCP_AUTHENC		0x66500
+#define _PORTC_HDCP_AUTHENC		0x66600
+#define _PORTD_HDCP_AUTHENC		0x66700
+#define _PORTE_HDCP_AUTHENC		0x66A00
+#define _PORTF_HDCP_AUTHENC		0x66900
+#define _PORT_HDCP_AUTHENC(port, x)	_MMIO(_PICK(port, \
+					  _PORTA_HDCP_AUTHENC, \
+					  _PORTB_HDCP_AUTHENC, \
+					  _PORTC_HDCP_AUTHENC, \
+					  _PORTD_HDCP_AUTHENC, \
+					  _PORTE_HDCP_AUTHENC, \
+					  _PORTF_HDCP_AUTHENC) + (x))
+#define PORT_HDCP_CONF(port)		_PORT_HDCP_AUTHENC(port, 0x0)
+#define _TRANSA_HDCP_CONF		0x66400
+#define _TRANSB_HDCP_CONF		0x66500
+#define TRANS_HDCP_CONF(trans)		_MMIO_TRANS(trans, _TRANSA_HDCP_CONF, \
+						    _TRANSB_HDCP_CONF)
+#define HDCP_CONF(dev_priv, trans, port) \
+					(GRAPHICS_VER(dev_priv) >= 12 ? \
+					 TRANS_HDCP_CONF(trans) : \
+					 PORT_HDCP_CONF(port))
+
+#define  HDCP_CONF_CAPTURE_AN		REG_BIT(0)
+#define  HDCP_CONF_AUTH_AND_ENC		(REG_BIT(1) | REG_BIT(0))
+#define PORT_HDCP_ANINIT(port)		_PORT_HDCP_AUTHENC(port, 0x4)
+#define _TRANSA_HDCP_ANINIT		0x66404
+#define _TRANSB_HDCP_ANINIT		0x66504
+#define TRANS_HDCP_ANINIT(trans)	_MMIO_TRANS(trans, \
+						    _TRANSA_HDCP_ANINIT, \
+						    _TRANSB_HDCP_ANINIT)
+#define HDCP_ANINIT(dev_priv, trans, port) \
+					(GRAPHICS_VER(dev_priv) >= 12 ? \
+					 TRANS_HDCP_ANINIT(trans) : \
+					 PORT_HDCP_ANINIT(port))
+
+#define PORT_HDCP_ANLO(port)		_PORT_HDCP_AUTHENC(port, 0x8)
+#define _TRANSA_HDCP_ANLO		0x66408
+#define _TRANSB_HDCP_ANLO		0x66508
+#define TRANS_HDCP_ANLO(trans)		_MMIO_TRANS(trans, _TRANSA_HDCP_ANLO, \
+						    _TRANSB_HDCP_ANLO)
+#define HDCP_ANLO(dev_priv, trans, port) \
+					(GRAPHICS_VER(dev_priv) >= 12 ? \
+					 TRANS_HDCP_ANLO(trans) : \
+					 PORT_HDCP_ANLO(port))
+
+#define PORT_HDCP_ANHI(port)		_PORT_HDCP_AUTHENC(port, 0xC)
+#define _TRANSA_HDCP_ANHI		0x6640C
+#define _TRANSB_HDCP_ANHI		0x6650C
+#define TRANS_HDCP_ANHI(trans)		_MMIO_TRANS(trans, _TRANSA_HDCP_ANHI, \
+						    _TRANSB_HDCP_ANHI)
+#define HDCP_ANHI(dev_priv, trans, port) \
+					(GRAPHICS_VER(dev_priv) >= 12 ? \
+					 TRANS_HDCP_ANHI(trans) : \
+					 PORT_HDCP_ANHI(port))
+
+#define PORT_HDCP_BKSVLO(port)		_PORT_HDCP_AUTHENC(port, 0x10)
+#define _TRANSA_HDCP_BKSVLO		0x66410
+#define _TRANSB_HDCP_BKSVLO		0x66510
+#define TRANS_HDCP_BKSVLO(trans)	_MMIO_TRANS(trans, \
+						    _TRANSA_HDCP_BKSVLO, \
+						    _TRANSB_HDCP_BKSVLO)
+#define HDCP_BKSVLO(dev_priv, trans, port) \
+					(GRAPHICS_VER(dev_priv) >= 12 ? \
+					 TRANS_HDCP_BKSVLO(trans) : \
+					 PORT_HDCP_BKSVLO(port))
+
+#define PORT_HDCP_BKSVHI(port)		_PORT_HDCP_AUTHENC(port, 0x14)
+#define _TRANSA_HDCP_BKSVHI		0x66414
+#define _TRANSB_HDCP_BKSVHI		0x66514
+#define TRANS_HDCP_BKSVHI(trans)	_MMIO_TRANS(trans, \
+						    _TRANSA_HDCP_BKSVHI, \
+						    _TRANSB_HDCP_BKSVHI)
+#define HDCP_BKSVHI(dev_priv, trans, port) \
+					(GRAPHICS_VER(dev_priv) >= 12 ? \
+					 TRANS_HDCP_BKSVHI(trans) : \
+					 PORT_HDCP_BKSVHI(port))
+
+#define PORT_HDCP_RPRIME(port)		_PORT_HDCP_AUTHENC(port, 0x18)
+#define _TRANSA_HDCP_RPRIME		0x66418
+#define _TRANSB_HDCP_RPRIME		0x66518
+#define TRANS_HDCP_RPRIME(trans)	_MMIO_TRANS(trans, \
+						    _TRANSA_HDCP_RPRIME, \
+						    _TRANSB_HDCP_RPRIME)
+#define HDCP_RPRIME(dev_priv, trans, port) \
+					(GRAPHICS_VER(dev_priv) >= 12 ? \
+					 TRANS_HDCP_RPRIME(trans) : \
+					 PORT_HDCP_RPRIME(port))
+
+#define PORT_HDCP_STATUS(port)		_PORT_HDCP_AUTHENC(port, 0x1C)
+#define _TRANSA_HDCP_STATUS		0x6641C
+#define _TRANSB_HDCP_STATUS		0x6651C
+#define TRANS_HDCP_STATUS(trans)	_MMIO_TRANS(trans, \
+						    _TRANSA_HDCP_STATUS, \
+						    _TRANSB_HDCP_STATUS)
+#define HDCP_STATUS(dev_priv, trans, port) \
+					(GRAPHICS_VER(dev_priv) >= 12 ? \
+					 TRANS_HDCP_STATUS(trans) : \
+					 PORT_HDCP_STATUS(port))
+
+#define  HDCP_STATUS_STREAM_A_ENC	REG_BIT(31)
+#define  HDCP_STATUS_STREAM_B_ENC	REG_BIT(30)
+#define  HDCP_STATUS_STREAM_C_ENC	REG_BIT(29)
+#define  HDCP_STATUS_STREAM_D_ENC	REG_BIT(28)
+#define  HDCP_STATUS_AUTH		REG_BIT(21)
+#define  HDCP_STATUS_ENC		REG_BIT(20)
+#define  HDCP_STATUS_RI_MATCH		REG_BIT(19)
+#define  HDCP_STATUS_R0_READY		REG_BIT(18)
+#define  HDCP_STATUS_AN_READY		REG_BIT(17)
+#define  HDCP_STATUS_CIPHER		REG_BIT(16)
+#define  HDCP_STATUS_FRAME_CNT(x)	(((x) >> 8) & 0xff)
+
+/* HDCP2.2 Registers */
+#define _PORTA_HDCP2_BASE		0x66800
+#define _PORTB_HDCP2_BASE		0x66500
+#define _PORTC_HDCP2_BASE		0x66600
+#define _PORTD_HDCP2_BASE		0x66700
+#define _PORTE_HDCP2_BASE		0x66A00
+#define _PORTF_HDCP2_BASE		0x66900
+#define _PORT_HDCP2_BASE(port, x)	_MMIO(_PICK((port), \
+					  _PORTA_HDCP2_BASE, \
+					  _PORTB_HDCP2_BASE, \
+					  _PORTC_HDCP2_BASE, \
+					  _PORTD_HDCP2_BASE, \
+					  _PORTE_HDCP2_BASE, \
+					  _PORTF_HDCP2_BASE) + (x))
+
+#define PORT_HDCP2_AUTH(port)		_PORT_HDCP2_BASE(port, 0x98)
+#define _TRANSA_HDCP2_AUTH		0x66498
+#define _TRANSB_HDCP2_AUTH		0x66598
+#define TRANS_HDCP2_AUTH(trans)		_MMIO_TRANS(trans, _TRANSA_HDCP2_AUTH, \
+						    _TRANSB_HDCP2_AUTH)
+#define   AUTH_LINK_AUTHENTICATED	REG_BIT(31)
+#define   AUTH_LINK_TYPE		REG_BIT(30)
+#define   AUTH_FORCE_CLR_INPUTCTR	REG_BIT(19)
+#define   AUTH_CLR_KEYS			REG_BIT(18)
+#define HDCP2_AUTH(dev_priv, trans, port) \
+					(GRAPHICS_VER(dev_priv) >= 12 ? \
+					 TRANS_HDCP2_AUTH(trans) : \
+					 PORT_HDCP2_AUTH(port))
+
+#define PORT_HDCP2_CTL(port)		_PORT_HDCP2_BASE(port, 0xB0)
+#define _TRANSA_HDCP2_CTL		0x664B0
+#define _TRANSB_HDCP2_CTL		0x665B0
+#define TRANS_HDCP2_CTL(trans)		_MMIO_TRANS(trans, _TRANSA_HDCP2_CTL, \
+						    _TRANSB_HDCP2_CTL)
+#define   CTL_LINK_ENCRYPTION_REQ	REG_BIT(31)
+#define HDCP2_CTL(dev_priv, trans, port) \
+					(GRAPHICS_VER(dev_priv) >= 12 ? \
+					 TRANS_HDCP2_CTL(trans) : \
+					 PORT_HDCP2_CTL(port))
+
+#define PORT_HDCP2_STATUS(port)		_PORT_HDCP2_BASE(port, 0xB4)
+#define _TRANSA_HDCP2_STATUS		0x664B4
+#define _TRANSB_HDCP2_STATUS		0x665B4
+#define TRANS_HDCP2_STATUS(trans)	_MMIO_TRANS(trans, \
+						    _TRANSA_HDCP2_STATUS, \
+						    _TRANSB_HDCP2_STATUS)
+#define   LINK_TYPE_STATUS		REG_BIT(22)
+#define   LINK_AUTH_STATUS		REG_BIT(21)
+#define   LINK_ENCRYPTION_STATUS	REG_BIT(20)
+#define HDCP2_STATUS(dev_priv, trans, port) \
+					(GRAPHICS_VER(dev_priv) >= 12 ? \
+					 TRANS_HDCP2_STATUS(trans) : \
+					 PORT_HDCP2_STATUS(port))
+
+#define _PIPEA_HDCP2_STREAM_STATUS	0x668C0
+#define _PIPEB_HDCP2_STREAM_STATUS	0x665C0
+#define _PIPEC_HDCP2_STREAM_STATUS	0x666C0
+#define _PIPED_HDCP2_STREAM_STATUS	0x667C0
+#define PIPE_HDCP2_STREAM_STATUS(pipe)		_MMIO(_PICK((pipe), \
+						      _PIPEA_HDCP2_STREAM_STATUS, \
+						      _PIPEB_HDCP2_STREAM_STATUS, \
+						      _PIPEC_HDCP2_STREAM_STATUS, \
+						      _PIPED_HDCP2_STREAM_STATUS))
+
+#define _TRANSA_HDCP2_STREAM_STATUS		0x664C0
+#define _TRANSB_HDCP2_STREAM_STATUS		0x665C0
+#define TRANS_HDCP2_STREAM_STATUS(trans)	_MMIO_TRANS(trans, \
+						    _TRANSA_HDCP2_STREAM_STATUS, \
+						    _TRANSB_HDCP2_STREAM_STATUS)
+#define   STREAM_ENCRYPTION_STATUS	REG_BIT(31)
+#define   STREAM_TYPE_STATUS		REG_BIT(30)
+#define HDCP2_STREAM_STATUS(dev_priv, trans, port) \
+					(GRAPHICS_VER(dev_priv) >= 12 ? \
+					 TRANS_HDCP2_STREAM_STATUS(trans) : \
+					 PIPE_HDCP2_STREAM_STATUS(pipe))
+
+#define _PORTA_HDCP2_AUTH_STREAM		0x66F00
+#define _PORTB_HDCP2_AUTH_STREAM		0x66F04
+#define PORT_HDCP2_AUTH_STREAM(port)	_MMIO_PORT(port, \
+						   _PORTA_HDCP2_AUTH_STREAM, \
+						   _PORTB_HDCP2_AUTH_STREAM)
+#define _TRANSA_HDCP2_AUTH_STREAM		0x66F00
+#define _TRANSB_HDCP2_AUTH_STREAM		0x66F04
+#define TRANS_HDCP2_AUTH_STREAM(trans)	_MMIO_TRANS(trans, \
+						    _TRANSA_HDCP2_AUTH_STREAM, \
+						    _TRANSB_HDCP2_AUTH_STREAM)
+#define   AUTH_STREAM_TYPE		REG_BIT(31)
+#define HDCP2_AUTH_STREAM(dev_priv, trans, port) \
+					(GRAPHICS_VER(dev_priv) >= 12 ? \
+					 TRANS_HDCP2_AUTH_STREAM(trans) : \
+					 PORT_HDCP2_AUTH_STREAM(port))
+
+#endif /* __INTEL_HDCP_REGS_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
new file mode 100644
index 000000000..2600019fc
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -0,0 +1,3237 @@
+/*
+ * Copyright 2006 Dave Airlie <airlied@linux.ie>
+ * Copyright © 2006-2009 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *	Eric Anholt <eric@anholt.net>
+ *	Jesse Barnes <jesse.barnes@intel.com>
+ */
+
+#include <linux/delay.h>
+#include <linux/hdmi.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#include <linux/string_helpers.h>
+
+#include <drm/display/drm_hdcp_helper.h>
+#include <drm/display/drm_hdmi_helper.h>
+#include <drm/display/drm_scdc_helper.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_edid.h>
+#include <drm/intel_lpe_audio.h>
+
+#include "i915_debugfs.h"
+#include "i915_drv.h"
+#include "intel_atomic.h"
+#include "intel_connector.h"
+#include "intel_ddi.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_dp.h"
+#include "intel_gmbus.h"
+#include "intel_hdcp.h"
+#include "intel_hdcp_regs.h"
+#include "intel_hdmi.h"
+#include "intel_lspcon.h"
+#include "intel_panel.h"
+#include "intel_snps_phy.h"
+
+static struct drm_i915_private *intel_hdmi_to_i915(struct intel_hdmi *intel_hdmi)
+{
+	return to_i915(hdmi_to_dig_port(intel_hdmi)->base.base.dev);
+}
+
+static void
+assert_hdmi_port_disabled(struct intel_hdmi *intel_hdmi)
+{
+	struct drm_i915_private *dev_priv = intel_hdmi_to_i915(intel_hdmi);
+	u32 enabled_bits;
+
+	enabled_bits = HAS_DDI(dev_priv) ? DDI_BUF_CTL_ENABLE : SDVO_ENABLE;
+
+	drm_WARN(&dev_priv->drm,
+		 intel_de_read(dev_priv, intel_hdmi->hdmi_reg) & enabled_bits,
+		 "HDMI port enabled, expecting disabled\n");
+}
+
+static void
+assert_hdmi_transcoder_func_disabled(struct drm_i915_private *dev_priv,
+				     enum transcoder cpu_transcoder)
+{
+	drm_WARN(&dev_priv->drm,
+		 intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(cpu_transcoder)) &
+		 TRANS_DDI_FUNC_ENABLE,
+		 "HDMI transcoder function enabled, expecting disabled\n");
+}
+
+static u32 g4x_infoframe_index(unsigned int type)
+{
+	switch (type) {
+	case HDMI_PACKET_TYPE_GAMUT_METADATA:
+		return VIDEO_DIP_SELECT_GAMUT;
+	case HDMI_INFOFRAME_TYPE_AVI:
+		return VIDEO_DIP_SELECT_AVI;
+	case HDMI_INFOFRAME_TYPE_SPD:
+		return VIDEO_DIP_SELECT_SPD;
+	case HDMI_INFOFRAME_TYPE_VENDOR:
+		return VIDEO_DIP_SELECT_VENDOR;
+	default:
+		MISSING_CASE(type);
+		return 0;
+	}
+}
+
+static u32 g4x_infoframe_enable(unsigned int type)
+{
+	switch (type) {
+	case HDMI_PACKET_TYPE_GENERAL_CONTROL:
+		return VIDEO_DIP_ENABLE_GCP;
+	case HDMI_PACKET_TYPE_GAMUT_METADATA:
+		return VIDEO_DIP_ENABLE_GAMUT;
+	case DP_SDP_VSC:
+		return 0;
+	case HDMI_INFOFRAME_TYPE_AVI:
+		return VIDEO_DIP_ENABLE_AVI;
+	case HDMI_INFOFRAME_TYPE_SPD:
+		return VIDEO_DIP_ENABLE_SPD;
+	case HDMI_INFOFRAME_TYPE_VENDOR:
+		return VIDEO_DIP_ENABLE_VENDOR;
+	case HDMI_INFOFRAME_TYPE_DRM:
+		return 0;
+	default:
+		MISSING_CASE(type);
+		return 0;
+	}
+}
+
+static u32 hsw_infoframe_enable(unsigned int type)
+{
+	switch (type) {
+	case HDMI_PACKET_TYPE_GENERAL_CONTROL:
+		return VIDEO_DIP_ENABLE_GCP_HSW;
+	case HDMI_PACKET_TYPE_GAMUT_METADATA:
+		return VIDEO_DIP_ENABLE_GMP_HSW;
+	case DP_SDP_VSC:
+		return VIDEO_DIP_ENABLE_VSC_HSW;
+	case DP_SDP_PPS:
+		return VDIP_ENABLE_PPS;
+	case HDMI_INFOFRAME_TYPE_AVI:
+		return VIDEO_DIP_ENABLE_AVI_HSW;
+	case HDMI_INFOFRAME_TYPE_SPD:
+		return VIDEO_DIP_ENABLE_SPD_HSW;
+	case HDMI_INFOFRAME_TYPE_VENDOR:
+		return VIDEO_DIP_ENABLE_VS_HSW;
+	case HDMI_INFOFRAME_TYPE_DRM:
+		return VIDEO_DIP_ENABLE_DRM_GLK;
+	default:
+		MISSING_CASE(type);
+		return 0;
+	}
+}
+
+static i915_reg_t
+hsw_dip_data_reg(struct drm_i915_private *dev_priv,
+		 enum transcoder cpu_transcoder,
+		 unsigned int type,
+		 int i)
+{
+	switch (type) {
+	case HDMI_PACKET_TYPE_GAMUT_METADATA:
+		return HSW_TVIDEO_DIP_GMP_DATA(cpu_transcoder, i);
+	case DP_SDP_VSC:
+		return HSW_TVIDEO_DIP_VSC_DATA(cpu_transcoder, i);
+	case DP_SDP_PPS:
+		return ICL_VIDEO_DIP_PPS_DATA(cpu_transcoder, i);
+	case HDMI_INFOFRAME_TYPE_AVI:
+		return HSW_TVIDEO_DIP_AVI_DATA(cpu_transcoder, i);
+	case HDMI_INFOFRAME_TYPE_SPD:
+		return HSW_TVIDEO_DIP_SPD_DATA(cpu_transcoder, i);
+	case HDMI_INFOFRAME_TYPE_VENDOR:
+		return HSW_TVIDEO_DIP_VS_DATA(cpu_transcoder, i);
+	case HDMI_INFOFRAME_TYPE_DRM:
+		return GLK_TVIDEO_DIP_DRM_DATA(cpu_transcoder, i);
+	default:
+		MISSING_CASE(type);
+		return INVALID_MMIO_REG;
+	}
+}
+
+static int hsw_dip_data_size(struct drm_i915_private *dev_priv,
+			     unsigned int type)
+{
+	switch (type) {
+	case DP_SDP_VSC:
+		return VIDEO_DIP_VSC_DATA_SIZE;
+	case DP_SDP_PPS:
+		return VIDEO_DIP_PPS_DATA_SIZE;
+	case HDMI_PACKET_TYPE_GAMUT_METADATA:
+		if (DISPLAY_VER(dev_priv) >= 11)
+			return VIDEO_DIP_GMP_DATA_SIZE;
+		else
+			return VIDEO_DIP_DATA_SIZE;
+	default:
+		return VIDEO_DIP_DATA_SIZE;
+	}
+}
+
+static void g4x_write_infoframe(struct intel_encoder *encoder,
+				const struct intel_crtc_state *crtc_state,
+				unsigned int type,
+				const void *frame, ssize_t len)
+{
+	const u32 *data = frame;
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	u32 val = intel_de_read(dev_priv, VIDEO_DIP_CTL);
+	int i;
+
+	drm_WARN(&dev_priv->drm, !(val & VIDEO_DIP_ENABLE),
+		 "Writing DIP with CTL reg disabled\n");
+
+	val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
+	val |= g4x_infoframe_index(type);
+
+	val &= ~g4x_infoframe_enable(type);
+
+	intel_de_write(dev_priv, VIDEO_DIP_CTL, val);
+
+	for (i = 0; i < len; i += 4) {
+		intel_de_write(dev_priv, VIDEO_DIP_DATA, *data);
+		data++;
+	}
+	/* Write every possible data byte to force correct ECC calculation. */
+	for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
+		intel_de_write(dev_priv, VIDEO_DIP_DATA, 0);
+
+	val |= g4x_infoframe_enable(type);
+	val &= ~VIDEO_DIP_FREQ_MASK;
+	val |= VIDEO_DIP_FREQ_VSYNC;
+
+	intel_de_write(dev_priv, VIDEO_DIP_CTL, val);
+	intel_de_posting_read(dev_priv, VIDEO_DIP_CTL);
+}
+
+static void g4x_read_infoframe(struct intel_encoder *encoder,
+			       const struct intel_crtc_state *crtc_state,
+			       unsigned int type,
+			       void *frame, ssize_t len)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	u32 val, *data = frame;
+	int i;
+
+	val = intel_de_read(dev_priv, VIDEO_DIP_CTL);
+
+	val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
+	val |= g4x_infoframe_index(type);
+
+	intel_de_write(dev_priv, VIDEO_DIP_CTL, val);
+
+	for (i = 0; i < len; i += 4)
+		*data++ = intel_de_read(dev_priv, VIDEO_DIP_DATA);
+}
+
+static u32 g4x_infoframes_enabled(struct intel_encoder *encoder,
+				  const struct intel_crtc_state *pipe_config)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	u32 val = intel_de_read(dev_priv, VIDEO_DIP_CTL);
+
+	if ((val & VIDEO_DIP_ENABLE) == 0)
+		return 0;
+
+	if ((val & VIDEO_DIP_PORT_MASK) != VIDEO_DIP_PORT(encoder->port))
+		return 0;
+
+	return val & (VIDEO_DIP_ENABLE_AVI |
+		      VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_SPD);
+}
+
+static void ibx_write_infoframe(struct intel_encoder *encoder,
+				const struct intel_crtc_state *crtc_state,
+				unsigned int type,
+				const void *frame, ssize_t len)
+{
+	const u32 *data = frame;
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	i915_reg_t reg = TVIDEO_DIP_CTL(crtc->pipe);
+	u32 val = intel_de_read(dev_priv, reg);
+	int i;
+
+	drm_WARN(&dev_priv->drm, !(val & VIDEO_DIP_ENABLE),
+		 "Writing DIP with CTL reg disabled\n");
+
+	val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
+	val |= g4x_infoframe_index(type);
+
+	val &= ~g4x_infoframe_enable(type);
+
+	intel_de_write(dev_priv, reg, val);
+
+	for (i = 0; i < len; i += 4) {
+		intel_de_write(dev_priv, TVIDEO_DIP_DATA(crtc->pipe),
+			       *data);
+		data++;
+	}
+	/* Write every possible data byte to force correct ECC calculation. */
+	for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
+		intel_de_write(dev_priv, TVIDEO_DIP_DATA(crtc->pipe), 0);
+
+	val |= g4x_infoframe_enable(type);
+	val &= ~VIDEO_DIP_FREQ_MASK;
+	val |= VIDEO_DIP_FREQ_VSYNC;
+
+	intel_de_write(dev_priv, reg, val);
+	intel_de_posting_read(dev_priv, reg);
+}
+
+static void ibx_read_infoframe(struct intel_encoder *encoder,
+			       const struct intel_crtc_state *crtc_state,
+			       unsigned int type,
+			       void *frame, ssize_t len)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	u32 val, *data = frame;
+	int i;
+
+	val = intel_de_read(dev_priv, TVIDEO_DIP_CTL(crtc->pipe));
+
+	val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
+	val |= g4x_infoframe_index(type);
+
+	intel_de_write(dev_priv, TVIDEO_DIP_CTL(crtc->pipe), val);
+
+	for (i = 0; i < len; i += 4)
+		*data++ = intel_de_read(dev_priv, TVIDEO_DIP_DATA(crtc->pipe));
+}
+
+static u32 ibx_infoframes_enabled(struct intel_encoder *encoder,
+				  const struct intel_crtc_state *pipe_config)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	enum pipe pipe = to_intel_crtc(pipe_config->uapi.crtc)->pipe;
+	i915_reg_t reg = TVIDEO_DIP_CTL(pipe);
+	u32 val = intel_de_read(dev_priv, reg);
+
+	if ((val & VIDEO_DIP_ENABLE) == 0)
+		return 0;
+
+	if ((val & VIDEO_DIP_PORT_MASK) != VIDEO_DIP_PORT(encoder->port))
+		return 0;
+
+	return val & (VIDEO_DIP_ENABLE_AVI |
+		      VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
+		      VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
+}
+
+static void cpt_write_infoframe(struct intel_encoder *encoder,
+				const struct intel_crtc_state *crtc_state,
+				unsigned int type,
+				const void *frame, ssize_t len)
+{
+	const u32 *data = frame;
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	i915_reg_t reg = TVIDEO_DIP_CTL(crtc->pipe);
+	u32 val = intel_de_read(dev_priv, reg);
+	int i;
+
+	drm_WARN(&dev_priv->drm, !(val & VIDEO_DIP_ENABLE),
+		 "Writing DIP with CTL reg disabled\n");
+
+	val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
+	val |= g4x_infoframe_index(type);
+
+	/* The DIP control register spec says that we need to update the AVI
+	 * infoframe without clearing its enable bit */
+	if (type != HDMI_INFOFRAME_TYPE_AVI)
+		val &= ~g4x_infoframe_enable(type);
+
+	intel_de_write(dev_priv, reg, val);
+
+	for (i = 0; i < len; i += 4) {
+		intel_de_write(dev_priv, TVIDEO_DIP_DATA(crtc->pipe),
+			       *data);
+		data++;
+	}
+	/* Write every possible data byte to force correct ECC calculation. */
+	for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
+		intel_de_write(dev_priv, TVIDEO_DIP_DATA(crtc->pipe), 0);
+
+	val |= g4x_infoframe_enable(type);
+	val &= ~VIDEO_DIP_FREQ_MASK;
+	val |= VIDEO_DIP_FREQ_VSYNC;
+
+	intel_de_write(dev_priv, reg, val);
+	intel_de_posting_read(dev_priv, reg);
+}
+
+static void cpt_read_infoframe(struct intel_encoder *encoder,
+			       const struct intel_crtc_state *crtc_state,
+			       unsigned int type,
+			       void *frame, ssize_t len)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	u32 val, *data = frame;
+	int i;
+
+	val = intel_de_read(dev_priv, TVIDEO_DIP_CTL(crtc->pipe));
+
+	val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
+	val |= g4x_infoframe_index(type);
+
+	intel_de_write(dev_priv, TVIDEO_DIP_CTL(crtc->pipe), val);
+
+	for (i = 0; i < len; i += 4)
+		*data++ = intel_de_read(dev_priv, TVIDEO_DIP_DATA(crtc->pipe));
+}
+
+static u32 cpt_infoframes_enabled(struct intel_encoder *encoder,
+				  const struct intel_crtc_state *pipe_config)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	enum pipe pipe = to_intel_crtc(pipe_config->uapi.crtc)->pipe;
+	u32 val = intel_de_read(dev_priv, TVIDEO_DIP_CTL(pipe));
+
+	if ((val & VIDEO_DIP_ENABLE) == 0)
+		return 0;
+
+	return val & (VIDEO_DIP_ENABLE_AVI |
+		      VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
+		      VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
+}
+
+static void vlv_write_infoframe(struct intel_encoder *encoder,
+				const struct intel_crtc_state *crtc_state,
+				unsigned int type,
+				const void *frame, ssize_t len)
+{
+	const u32 *data = frame;
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	i915_reg_t reg = VLV_TVIDEO_DIP_CTL(crtc->pipe);
+	u32 val = intel_de_read(dev_priv, reg);
+	int i;
+
+	drm_WARN(&dev_priv->drm, !(val & VIDEO_DIP_ENABLE),
+		 "Writing DIP with CTL reg disabled\n");
+
+	val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
+	val |= g4x_infoframe_index(type);
+
+	val &= ~g4x_infoframe_enable(type);
+
+	intel_de_write(dev_priv, reg, val);
+
+	for (i = 0; i < len; i += 4) {
+		intel_de_write(dev_priv,
+			       VLV_TVIDEO_DIP_DATA(crtc->pipe), *data);
+		data++;
+	}
+	/* Write every possible data byte to force correct ECC calculation. */
+	for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
+		intel_de_write(dev_priv,
+			       VLV_TVIDEO_DIP_DATA(crtc->pipe), 0);
+
+	val |= g4x_infoframe_enable(type);
+	val &= ~VIDEO_DIP_FREQ_MASK;
+	val |= VIDEO_DIP_FREQ_VSYNC;
+
+	intel_de_write(dev_priv, reg, val);
+	intel_de_posting_read(dev_priv, reg);
+}
+
+static void vlv_read_infoframe(struct intel_encoder *encoder,
+			       const struct intel_crtc_state *crtc_state,
+			       unsigned int type,
+			       void *frame, ssize_t len)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	u32 val, *data = frame;
+	int i;
+
+	val = intel_de_read(dev_priv, VLV_TVIDEO_DIP_CTL(crtc->pipe));
+
+	val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
+	val |= g4x_infoframe_index(type);
+
+	intel_de_write(dev_priv, VLV_TVIDEO_DIP_CTL(crtc->pipe), val);
+
+	for (i = 0; i < len; i += 4)
+		*data++ = intel_de_read(dev_priv,
+				        VLV_TVIDEO_DIP_DATA(crtc->pipe));
+}
+
+static u32 vlv_infoframes_enabled(struct intel_encoder *encoder,
+				  const struct intel_crtc_state *pipe_config)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	enum pipe pipe = to_intel_crtc(pipe_config->uapi.crtc)->pipe;
+	u32 val = intel_de_read(dev_priv, VLV_TVIDEO_DIP_CTL(pipe));
+
+	if ((val & VIDEO_DIP_ENABLE) == 0)
+		return 0;
+
+	if ((val & VIDEO_DIP_PORT_MASK) != VIDEO_DIP_PORT(encoder->port))
+		return 0;
+
+	return val & (VIDEO_DIP_ENABLE_AVI |
+		      VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
+		      VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
+}
+
+void hsw_write_infoframe(struct intel_encoder *encoder,
+			 const struct intel_crtc_state *crtc_state,
+			 unsigned int type,
+			 const void *frame, ssize_t len)
+{
+	const u32 *data = frame;
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+	i915_reg_t ctl_reg = HSW_TVIDEO_DIP_CTL(cpu_transcoder);
+	int data_size;
+	int i;
+	u32 val = intel_de_read(dev_priv, ctl_reg);
+
+	data_size = hsw_dip_data_size(dev_priv, type);
+
+	drm_WARN_ON(&dev_priv->drm, len > data_size);
+
+	val &= ~hsw_infoframe_enable(type);
+	intel_de_write(dev_priv, ctl_reg, val);
+
+	for (i = 0; i < len; i += 4) {
+		intel_de_write(dev_priv,
+			       hsw_dip_data_reg(dev_priv, cpu_transcoder, type, i >> 2),
+			       *data);
+		data++;
+	}
+	/* Write every possible data byte to force correct ECC calculation. */
+	for (; i < data_size; i += 4)
+		intel_de_write(dev_priv,
+			       hsw_dip_data_reg(dev_priv, cpu_transcoder, type, i >> 2),
+			       0);
+
+	/* Wa_14013475917 */
+	if (DISPLAY_VER(dev_priv) == 13 && crtc_state->has_psr &&
+	    type == DP_SDP_VSC)
+		return;
+
+	val |= hsw_infoframe_enable(type);
+	intel_de_write(dev_priv, ctl_reg, val);
+	intel_de_posting_read(dev_priv, ctl_reg);
+}
+
+void hsw_read_infoframe(struct intel_encoder *encoder,
+			const struct intel_crtc_state *crtc_state,
+			unsigned int type, void *frame, ssize_t len)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+	u32 *data = frame;
+	int i;
+
+	for (i = 0; i < len; i += 4)
+		*data++ = intel_de_read(dev_priv,
+				        hsw_dip_data_reg(dev_priv, cpu_transcoder, type, i >> 2));
+}
+
+static u32 hsw_infoframes_enabled(struct intel_encoder *encoder,
+				  const struct intel_crtc_state *pipe_config)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	u32 val = intel_de_read(dev_priv,
+				HSW_TVIDEO_DIP_CTL(pipe_config->cpu_transcoder));
+	u32 mask;
+
+	mask = (VIDEO_DIP_ENABLE_VSC_HSW | VIDEO_DIP_ENABLE_AVI_HSW |
+		VIDEO_DIP_ENABLE_GCP_HSW | VIDEO_DIP_ENABLE_VS_HSW |
+		VIDEO_DIP_ENABLE_GMP_HSW | VIDEO_DIP_ENABLE_SPD_HSW);
+
+	if (DISPLAY_VER(dev_priv) >= 10)
+		mask |= VIDEO_DIP_ENABLE_DRM_GLK;
+
+	return val & mask;
+}
+
+static const u8 infoframe_type_to_idx[] = {
+	HDMI_PACKET_TYPE_GENERAL_CONTROL,
+	HDMI_PACKET_TYPE_GAMUT_METADATA,
+	DP_SDP_VSC,
+	HDMI_INFOFRAME_TYPE_AVI,
+	HDMI_INFOFRAME_TYPE_SPD,
+	HDMI_INFOFRAME_TYPE_VENDOR,
+	HDMI_INFOFRAME_TYPE_DRM,
+};
+
+u32 intel_hdmi_infoframe_enable(unsigned int type)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(infoframe_type_to_idx); i++) {
+		if (infoframe_type_to_idx[i] == type)
+			return BIT(i);
+	}
+
+	return 0;
+}
+
+u32 intel_hdmi_infoframes_enabled(struct intel_encoder *encoder,
+				  const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	u32 val, ret = 0;
+	int i;
+
+	val = dig_port->infoframes_enabled(encoder, crtc_state);
+
+	/* map from hardware bits to dip idx */
+	for (i = 0; i < ARRAY_SIZE(infoframe_type_to_idx); i++) {
+		unsigned int type = infoframe_type_to_idx[i];
+
+		if (HAS_DDI(dev_priv)) {
+			if (val & hsw_infoframe_enable(type))
+				ret |= BIT(i);
+		} else {
+			if (val & g4x_infoframe_enable(type))
+				ret |= BIT(i);
+		}
+	}
+
+	return ret;
+}
+
+/*
+ * The data we write to the DIP data buffer registers is 1 byte bigger than the
+ * HDMI infoframe size because of an ECC/reserved byte at position 3 (starting
+ * at 0). It's also a byte used by DisplayPort so the same DIP registers can be
+ * used for both technologies.
+ *
+ * DW0: Reserved/ECC/DP | HB2 | HB1 | HB0
+ * DW1:       DB3       | DB2 | DB1 | DB0
+ * DW2:       DB7       | DB6 | DB5 | DB4
+ * DW3: ...
+ *
+ * (HB is Header Byte, DB is Data Byte)
+ *
+ * The hdmi pack() functions don't know about that hardware specific hole so we
+ * trick them by giving an offset into the buffer and moving back the header
+ * bytes by one.
+ */
+static void intel_write_infoframe(struct intel_encoder *encoder,
+				  const struct intel_crtc_state *crtc_state,
+				  enum hdmi_infoframe_type type,
+				  const union hdmi_infoframe *frame)
+{
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	u8 buffer[VIDEO_DIP_DATA_SIZE];
+	ssize_t len;
+
+	if ((crtc_state->infoframes.enable &
+	     intel_hdmi_infoframe_enable(type)) == 0)
+		return;
+
+	if (drm_WARN_ON(encoder->base.dev, frame->any.type != type))
+		return;
+
+	/* see comment above for the reason for this offset */
+	len = hdmi_infoframe_pack_only(frame, buffer + 1, sizeof(buffer) - 1);
+	if (drm_WARN_ON(encoder->base.dev, len < 0))
+		return;
+
+	/* Insert the 'hole' (see big comment above) at position 3 */
+	memmove(&buffer[0], &buffer[1], 3);
+	buffer[3] = 0;
+	len++;
+
+	dig_port->write_infoframe(encoder, crtc_state, type, buffer, len);
+}
+
+void intel_read_infoframe(struct intel_encoder *encoder,
+			  const struct intel_crtc_state *crtc_state,
+			  enum hdmi_infoframe_type type,
+			  union hdmi_infoframe *frame)
+{
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	u8 buffer[VIDEO_DIP_DATA_SIZE];
+	int ret;
+
+	if ((crtc_state->infoframes.enable &
+	     intel_hdmi_infoframe_enable(type)) == 0)
+		return;
+
+	dig_port->read_infoframe(encoder, crtc_state,
+				       type, buffer, sizeof(buffer));
+
+	/* Fill the 'hole' (see big comment above) at position 3 */
+	memmove(&buffer[1], &buffer[0], 3);
+
+	/* see comment above for the reason for this offset */
+	ret = hdmi_infoframe_unpack(frame, buffer + 1, sizeof(buffer) - 1);
+	if (ret) {
+		drm_dbg_kms(encoder->base.dev,
+			    "Failed to unpack infoframe type 0x%02x\n", type);
+		return;
+	}
+
+	if (frame->any.type != type)
+		drm_dbg_kms(encoder->base.dev,
+			    "Found the wrong infoframe type 0x%x (expected 0x%02x)\n",
+			    frame->any.type, type);
+}
+
+static bool
+intel_hdmi_compute_avi_infoframe(struct intel_encoder *encoder,
+				 struct intel_crtc_state *crtc_state,
+				 struct drm_connector_state *conn_state)
+{
+	struct hdmi_avi_infoframe *frame = &crtc_state->infoframes.avi.avi;
+	const struct drm_display_mode *adjusted_mode =
+		&crtc_state->hw.adjusted_mode;
+	struct drm_connector *connector = conn_state->connector;
+	int ret;
+
+	if (!crtc_state->has_infoframe)
+		return true;
+
+	crtc_state->infoframes.enable |=
+		intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_AVI);
+
+	ret = drm_hdmi_avi_infoframe_from_display_mode(frame, connector,
+						       adjusted_mode);
+	if (ret)
+		return false;
+
+	if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420)
+		frame->colorspace = HDMI_COLORSPACE_YUV420;
+	else if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR444)
+		frame->colorspace = HDMI_COLORSPACE_YUV444;
+	else
+		frame->colorspace = HDMI_COLORSPACE_RGB;
+
+	drm_hdmi_avi_infoframe_colorimetry(frame, conn_state);
+
+	/* nonsense combination */
+	drm_WARN_ON(encoder->base.dev, crtc_state->limited_color_range &&
+		    crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB);
+
+	if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_RGB) {
+		drm_hdmi_avi_infoframe_quant_range(frame, connector,
+						   adjusted_mode,
+						   crtc_state->limited_color_range ?
+						   HDMI_QUANTIZATION_RANGE_LIMITED :
+						   HDMI_QUANTIZATION_RANGE_FULL);
+	} else {
+		frame->quantization_range = HDMI_QUANTIZATION_RANGE_DEFAULT;
+		frame->ycc_quantization_range = HDMI_YCC_QUANTIZATION_RANGE_LIMITED;
+	}
+
+	drm_hdmi_avi_infoframe_content_type(frame, conn_state);
+
+	/* TODO: handle pixel repetition for YCBCR420 outputs */
+
+	ret = hdmi_avi_infoframe_check(frame);
+	if (drm_WARN_ON(encoder->base.dev, ret))
+		return false;
+
+	return true;
+}
+
+static bool
+intel_hdmi_compute_spd_infoframe(struct intel_encoder *encoder,
+				 struct intel_crtc_state *crtc_state,
+				 struct drm_connector_state *conn_state)
+{
+	struct hdmi_spd_infoframe *frame = &crtc_state->infoframes.spd.spd;
+	int ret;
+
+	if (!crtc_state->has_infoframe)
+		return true;
+
+	crtc_state->infoframes.enable |=
+		intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_SPD);
+
+	ret = hdmi_spd_infoframe_init(frame, "Intel", "Integrated gfx");
+	if (drm_WARN_ON(encoder->base.dev, ret))
+		return false;
+
+	frame->sdi = HDMI_SPD_SDI_PC;
+
+	ret = hdmi_spd_infoframe_check(frame);
+	if (drm_WARN_ON(encoder->base.dev, ret))
+		return false;
+
+	return true;
+}
+
+static bool
+intel_hdmi_compute_hdmi_infoframe(struct intel_encoder *encoder,
+				  struct intel_crtc_state *crtc_state,
+				  struct drm_connector_state *conn_state)
+{
+	struct hdmi_vendor_infoframe *frame =
+		&crtc_state->infoframes.hdmi.vendor.hdmi;
+	const struct drm_display_info *info =
+		&conn_state->connector->display_info;
+	int ret;
+
+	if (!crtc_state->has_infoframe || !info->has_hdmi_infoframe)
+		return true;
+
+	crtc_state->infoframes.enable |=
+		intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_VENDOR);
+
+	ret = drm_hdmi_vendor_infoframe_from_display_mode(frame,
+							  conn_state->connector,
+							  &crtc_state->hw.adjusted_mode);
+	if (drm_WARN_ON(encoder->base.dev, ret))
+		return false;
+
+	ret = hdmi_vendor_infoframe_check(frame);
+	if (drm_WARN_ON(encoder->base.dev, ret))
+		return false;
+
+	return true;
+}
+
+static bool
+intel_hdmi_compute_drm_infoframe(struct intel_encoder *encoder,
+				 struct intel_crtc_state *crtc_state,
+				 struct drm_connector_state *conn_state)
+{
+	struct hdmi_drm_infoframe *frame = &crtc_state->infoframes.drm.drm;
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	int ret;
+
+	if (DISPLAY_VER(dev_priv) < 10)
+		return true;
+
+	if (!crtc_state->has_infoframe)
+		return true;
+
+	if (!conn_state->hdr_output_metadata)
+		return true;
+
+	crtc_state->infoframes.enable |=
+		intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_DRM);
+
+	ret = drm_hdmi_infoframe_set_hdr_metadata(frame, conn_state);
+	if (ret < 0) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "couldn't set HDR metadata in infoframe\n");
+		return false;
+	}
+
+	ret = hdmi_drm_infoframe_check(frame);
+	if (drm_WARN_ON(&dev_priv->drm, ret))
+		return false;
+
+	return true;
+}
+
+static void g4x_set_infoframes(struct intel_encoder *encoder,
+			       bool enable,
+			       const struct intel_crtc_state *crtc_state,
+			       const struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	struct intel_hdmi *intel_hdmi = &dig_port->hdmi;
+	i915_reg_t reg = VIDEO_DIP_CTL;
+	u32 val = intel_de_read(dev_priv, reg);
+	u32 port = VIDEO_DIP_PORT(encoder->port);
+
+	assert_hdmi_port_disabled(intel_hdmi);
+
+	/* If the registers were not initialized yet, they might be zeroes,
+	 * which means we're selecting the AVI DIP and we're setting its
+	 * frequency to once. This seems to really confuse the HW and make
+	 * things stop working (the register spec says the AVI always needs to
+	 * be sent every VSync). So here we avoid writing to the register more
+	 * than we need and also explicitly select the AVI DIP and explicitly
+	 * set its frequency to every VSync. Avoiding to write it twice seems to
+	 * be enough to solve the problem, but being defensive shouldn't hurt us
+	 * either. */
+	val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
+
+	if (!enable) {
+		if (!(val & VIDEO_DIP_ENABLE))
+			return;
+		if (port != (val & VIDEO_DIP_PORT_MASK)) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "video DIP still enabled on port %c\n",
+				    (val & VIDEO_DIP_PORT_MASK) >> 29);
+			return;
+		}
+		val &= ~(VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI |
+			 VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_SPD);
+		intel_de_write(dev_priv, reg, val);
+		intel_de_posting_read(dev_priv, reg);
+		return;
+	}
+
+	if (port != (val & VIDEO_DIP_PORT_MASK)) {
+		if (val & VIDEO_DIP_ENABLE) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "video DIP already enabled on port %c\n",
+				    (val & VIDEO_DIP_PORT_MASK) >> 29);
+			return;
+		}
+		val &= ~VIDEO_DIP_PORT_MASK;
+		val |= port;
+	}
+
+	val |= VIDEO_DIP_ENABLE;
+	val &= ~(VIDEO_DIP_ENABLE_AVI |
+		 VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_SPD);
+
+	intel_de_write(dev_priv, reg, val);
+	intel_de_posting_read(dev_priv, reg);
+
+	intel_write_infoframe(encoder, crtc_state,
+			      HDMI_INFOFRAME_TYPE_AVI,
+			      &crtc_state->infoframes.avi);
+	intel_write_infoframe(encoder, crtc_state,
+			      HDMI_INFOFRAME_TYPE_SPD,
+			      &crtc_state->infoframes.spd);
+	intel_write_infoframe(encoder, crtc_state,
+			      HDMI_INFOFRAME_TYPE_VENDOR,
+			      &crtc_state->infoframes.hdmi);
+}
+
+/*
+ * Determine if default_phase=1 can be indicated in the GCP infoframe.
+ *
+ * From HDMI specification 1.4a:
+ * - The first pixel of each Video Data Period shall always have a pixel packing phase of 0
+ * - The first pixel following each Video Data Period shall have a pixel packing phase of 0
+ * - The PP bits shall be constant for all GCPs and will be equal to the last packing phase
+ * - The first pixel following every transition of HSYNC or VSYNC shall have a pixel packing
+ *   phase of 0
+ */
+static bool gcp_default_phase_possible(int pipe_bpp,
+				       const struct drm_display_mode *mode)
+{
+	unsigned int pixels_per_group;
+
+	switch (pipe_bpp) {
+	case 30:
+		/* 4 pixels in 5 clocks */
+		pixels_per_group = 4;
+		break;
+	case 36:
+		/* 2 pixels in 3 clocks */
+		pixels_per_group = 2;
+		break;
+	case 48:
+		/* 1 pixel in 2 clocks */
+		pixels_per_group = 1;
+		break;
+	default:
+		/* phase information not relevant for 8bpc */
+		return false;
+	}
+
+	return mode->crtc_hdisplay % pixels_per_group == 0 &&
+		mode->crtc_htotal % pixels_per_group == 0 &&
+		mode->crtc_hblank_start % pixels_per_group == 0 &&
+		mode->crtc_hblank_end % pixels_per_group == 0 &&
+		mode->crtc_hsync_start % pixels_per_group == 0 &&
+		mode->crtc_hsync_end % pixels_per_group == 0 &&
+		((mode->flags & DRM_MODE_FLAG_INTERLACE) == 0 ||
+		 mode->crtc_htotal/2 % pixels_per_group == 0);
+}
+
+static bool intel_hdmi_set_gcp_infoframe(struct intel_encoder *encoder,
+					 const struct intel_crtc_state *crtc_state,
+					 const struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	i915_reg_t reg;
+
+	if ((crtc_state->infoframes.enable &
+	     intel_hdmi_infoframe_enable(HDMI_PACKET_TYPE_GENERAL_CONTROL)) == 0)
+		return false;
+
+	if (HAS_DDI(dev_priv))
+		reg = HSW_TVIDEO_DIP_GCP(crtc_state->cpu_transcoder);
+	else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
+		reg = VLV_TVIDEO_DIP_GCP(crtc->pipe);
+	else if (HAS_PCH_SPLIT(dev_priv))
+		reg = TVIDEO_DIP_GCP(crtc->pipe);
+	else
+		return false;
+
+	intel_de_write(dev_priv, reg, crtc_state->infoframes.gcp);
+
+	return true;
+}
+
+void intel_hdmi_read_gcp_infoframe(struct intel_encoder *encoder,
+				   struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	i915_reg_t reg;
+
+	if ((crtc_state->infoframes.enable &
+	     intel_hdmi_infoframe_enable(HDMI_PACKET_TYPE_GENERAL_CONTROL)) == 0)
+		return;
+
+	if (HAS_DDI(dev_priv))
+		reg = HSW_TVIDEO_DIP_GCP(crtc_state->cpu_transcoder);
+	else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
+		reg = VLV_TVIDEO_DIP_GCP(crtc->pipe);
+	else if (HAS_PCH_SPLIT(dev_priv))
+		reg = TVIDEO_DIP_GCP(crtc->pipe);
+	else
+		return;
+
+	crtc_state->infoframes.gcp = intel_de_read(dev_priv, reg);
+}
+
+static void intel_hdmi_compute_gcp_infoframe(struct intel_encoder *encoder,
+					     struct intel_crtc_state *crtc_state,
+					     struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+
+	if (IS_G4X(dev_priv) || !crtc_state->has_infoframe)
+		return;
+
+	crtc_state->infoframes.enable |=
+		intel_hdmi_infoframe_enable(HDMI_PACKET_TYPE_GENERAL_CONTROL);
+
+	/* Indicate color indication for deep color mode */
+	if (crtc_state->pipe_bpp > 24)
+		crtc_state->infoframes.gcp |= GCP_COLOR_INDICATION;
+
+	/* Enable default_phase whenever the display mode is suitably aligned */
+	if (gcp_default_phase_possible(crtc_state->pipe_bpp,
+				       &crtc_state->hw.adjusted_mode))
+		crtc_state->infoframes.gcp |= GCP_DEFAULT_PHASE_ENABLE;
+}
+
+static void ibx_set_infoframes(struct intel_encoder *encoder,
+			       bool enable,
+			       const struct intel_crtc_state *crtc_state,
+			       const struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	struct intel_hdmi *intel_hdmi = &dig_port->hdmi;
+	i915_reg_t reg = TVIDEO_DIP_CTL(crtc->pipe);
+	u32 val = intel_de_read(dev_priv, reg);
+	u32 port = VIDEO_DIP_PORT(encoder->port);
+
+	assert_hdmi_port_disabled(intel_hdmi);
+
+	/* See the big comment in g4x_set_infoframes() */
+	val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
+
+	if (!enable) {
+		if (!(val & VIDEO_DIP_ENABLE))
+			return;
+		val &= ~(VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI |
+			 VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
+			 VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
+		intel_de_write(dev_priv, reg, val);
+		intel_de_posting_read(dev_priv, reg);
+		return;
+	}
+
+	if (port != (val & VIDEO_DIP_PORT_MASK)) {
+		drm_WARN(&dev_priv->drm, val & VIDEO_DIP_ENABLE,
+			 "DIP already enabled on port %c\n",
+			 (val & VIDEO_DIP_PORT_MASK) >> 29);
+		val &= ~VIDEO_DIP_PORT_MASK;
+		val |= port;
+	}
+
+	val |= VIDEO_DIP_ENABLE;
+	val &= ~(VIDEO_DIP_ENABLE_AVI |
+		 VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
+		 VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
+
+	if (intel_hdmi_set_gcp_infoframe(encoder, crtc_state, conn_state))
+		val |= VIDEO_DIP_ENABLE_GCP;
+
+	intel_de_write(dev_priv, reg, val);
+	intel_de_posting_read(dev_priv, reg);
+
+	intel_write_infoframe(encoder, crtc_state,
+			      HDMI_INFOFRAME_TYPE_AVI,
+			      &crtc_state->infoframes.avi);
+	intel_write_infoframe(encoder, crtc_state,
+			      HDMI_INFOFRAME_TYPE_SPD,
+			      &crtc_state->infoframes.spd);
+	intel_write_infoframe(encoder, crtc_state,
+			      HDMI_INFOFRAME_TYPE_VENDOR,
+			      &crtc_state->infoframes.hdmi);
+}
+
+static void cpt_set_infoframes(struct intel_encoder *encoder,
+			       bool enable,
+			       const struct intel_crtc_state *crtc_state,
+			       const struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
+	i915_reg_t reg = TVIDEO_DIP_CTL(crtc->pipe);
+	u32 val = intel_de_read(dev_priv, reg);
+
+	assert_hdmi_port_disabled(intel_hdmi);
+
+	/* See the big comment in g4x_set_infoframes() */
+	val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
+
+	if (!enable) {
+		if (!(val & VIDEO_DIP_ENABLE))
+			return;
+		val &= ~(VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI |
+			 VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
+			 VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
+		intel_de_write(dev_priv, reg, val);
+		intel_de_posting_read(dev_priv, reg);
+		return;
+	}
+
+	/* Set both together, unset both together: see the spec. */
+	val |= VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI;
+	val &= ~(VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
+		 VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
+
+	if (intel_hdmi_set_gcp_infoframe(encoder, crtc_state, conn_state))
+		val |= VIDEO_DIP_ENABLE_GCP;
+
+	intel_de_write(dev_priv, reg, val);
+	intel_de_posting_read(dev_priv, reg);
+
+	intel_write_infoframe(encoder, crtc_state,
+			      HDMI_INFOFRAME_TYPE_AVI,
+			      &crtc_state->infoframes.avi);
+	intel_write_infoframe(encoder, crtc_state,
+			      HDMI_INFOFRAME_TYPE_SPD,
+			      &crtc_state->infoframes.spd);
+	intel_write_infoframe(encoder, crtc_state,
+			      HDMI_INFOFRAME_TYPE_VENDOR,
+			      &crtc_state->infoframes.hdmi);
+}
+
+static void vlv_set_infoframes(struct intel_encoder *encoder,
+			       bool enable,
+			       const struct intel_crtc_state *crtc_state,
+			       const struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
+	i915_reg_t reg = VLV_TVIDEO_DIP_CTL(crtc->pipe);
+	u32 val = intel_de_read(dev_priv, reg);
+	u32 port = VIDEO_DIP_PORT(encoder->port);
+
+	assert_hdmi_port_disabled(intel_hdmi);
+
+	/* See the big comment in g4x_set_infoframes() */
+	val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
+
+	if (!enable) {
+		if (!(val & VIDEO_DIP_ENABLE))
+			return;
+		val &= ~(VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI |
+			 VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
+			 VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
+		intel_de_write(dev_priv, reg, val);
+		intel_de_posting_read(dev_priv, reg);
+		return;
+	}
+
+	if (port != (val & VIDEO_DIP_PORT_MASK)) {
+		drm_WARN(&dev_priv->drm, val & VIDEO_DIP_ENABLE,
+			 "DIP already enabled on port %c\n",
+			 (val & VIDEO_DIP_PORT_MASK) >> 29);
+		val &= ~VIDEO_DIP_PORT_MASK;
+		val |= port;
+	}
+
+	val |= VIDEO_DIP_ENABLE;
+	val &= ~(VIDEO_DIP_ENABLE_AVI |
+		 VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
+		 VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_ENABLE_GCP);
+
+	if (intel_hdmi_set_gcp_infoframe(encoder, crtc_state, conn_state))
+		val |= VIDEO_DIP_ENABLE_GCP;
+
+	intel_de_write(dev_priv, reg, val);
+	intel_de_posting_read(dev_priv, reg);
+
+	intel_write_infoframe(encoder, crtc_state,
+			      HDMI_INFOFRAME_TYPE_AVI,
+			      &crtc_state->infoframes.avi);
+	intel_write_infoframe(encoder, crtc_state,
+			      HDMI_INFOFRAME_TYPE_SPD,
+			      &crtc_state->infoframes.spd);
+	intel_write_infoframe(encoder, crtc_state,
+			      HDMI_INFOFRAME_TYPE_VENDOR,
+			      &crtc_state->infoframes.hdmi);
+}
+
+static void hsw_set_infoframes(struct intel_encoder *encoder,
+			       bool enable,
+			       const struct intel_crtc_state *crtc_state,
+			       const struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	i915_reg_t reg = HSW_TVIDEO_DIP_CTL(crtc_state->cpu_transcoder);
+	u32 val = intel_de_read(dev_priv, reg);
+
+	assert_hdmi_transcoder_func_disabled(dev_priv,
+					     crtc_state->cpu_transcoder);
+
+	val &= ~(VIDEO_DIP_ENABLE_VSC_HSW | VIDEO_DIP_ENABLE_AVI_HSW |
+		 VIDEO_DIP_ENABLE_GCP_HSW | VIDEO_DIP_ENABLE_VS_HSW |
+		 VIDEO_DIP_ENABLE_GMP_HSW | VIDEO_DIP_ENABLE_SPD_HSW |
+		 VIDEO_DIP_ENABLE_DRM_GLK);
+
+	if (!enable) {
+		intel_de_write(dev_priv, reg, val);
+		intel_de_posting_read(dev_priv, reg);
+		return;
+	}
+
+	if (intel_hdmi_set_gcp_infoframe(encoder, crtc_state, conn_state))
+		val |= VIDEO_DIP_ENABLE_GCP_HSW;
+
+	intel_de_write(dev_priv, reg, val);
+	intel_de_posting_read(dev_priv, reg);
+
+	intel_write_infoframe(encoder, crtc_state,
+			      HDMI_INFOFRAME_TYPE_AVI,
+			      &crtc_state->infoframes.avi);
+	intel_write_infoframe(encoder, crtc_state,
+			      HDMI_INFOFRAME_TYPE_SPD,
+			      &crtc_state->infoframes.spd);
+	intel_write_infoframe(encoder, crtc_state,
+			      HDMI_INFOFRAME_TYPE_VENDOR,
+			      &crtc_state->infoframes.hdmi);
+	intel_write_infoframe(encoder, crtc_state,
+			      HDMI_INFOFRAME_TYPE_DRM,
+			      &crtc_state->infoframes.drm);
+}
+
+void intel_dp_dual_mode_set_tmds_output(struct intel_hdmi *hdmi, bool enable)
+{
+	struct drm_i915_private *dev_priv = intel_hdmi_to_i915(hdmi);
+	struct i2c_adapter *adapter;
+
+	if (hdmi->dp_dual_mode.type < DRM_DP_DUAL_MODE_TYPE2_DVI)
+		return;
+
+	adapter = intel_gmbus_get_adapter(dev_priv, hdmi->ddc_bus);
+
+	drm_dbg_kms(&dev_priv->drm, "%s DP dual mode adaptor TMDS output\n",
+		    enable ? "Enabling" : "Disabling");
+
+	drm_dp_dual_mode_set_tmds_output(&dev_priv->drm, hdmi->dp_dual_mode.type, adapter, enable);
+}
+
+static int intel_hdmi_hdcp_read(struct intel_digital_port *dig_port,
+				unsigned int offset, void *buffer, size_t size)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	struct intel_hdmi *hdmi = &dig_port->hdmi;
+	struct i2c_adapter *adapter = intel_gmbus_get_adapter(i915,
+							      hdmi->ddc_bus);
+	int ret;
+	u8 start = offset & 0xff;
+	struct i2c_msg msgs[] = {
+		{
+			.addr = DRM_HDCP_DDC_ADDR,
+			.flags = 0,
+			.len = 1,
+			.buf = &start,
+		},
+		{
+			.addr = DRM_HDCP_DDC_ADDR,
+			.flags = I2C_M_RD,
+			.len = size,
+			.buf = buffer
+		}
+	};
+	ret = i2c_transfer(adapter, msgs, ARRAY_SIZE(msgs));
+	if (ret == ARRAY_SIZE(msgs))
+		return 0;
+	return ret >= 0 ? -EIO : ret;
+}
+
+static int intel_hdmi_hdcp_write(struct intel_digital_port *dig_port,
+				 unsigned int offset, void *buffer, size_t size)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	struct intel_hdmi *hdmi = &dig_port->hdmi;
+	struct i2c_adapter *adapter = intel_gmbus_get_adapter(i915,
+							      hdmi->ddc_bus);
+	int ret;
+	u8 *write_buf;
+	struct i2c_msg msg;
+
+	write_buf = kzalloc(size + 1, GFP_KERNEL);
+	if (!write_buf)
+		return -ENOMEM;
+
+	write_buf[0] = offset & 0xff;
+	memcpy(&write_buf[1], buffer, size);
+
+	msg.addr = DRM_HDCP_DDC_ADDR;
+	msg.flags = 0,
+	msg.len = size + 1,
+	msg.buf = write_buf;
+
+	ret = i2c_transfer(adapter, &msg, 1);
+	if (ret == 1)
+		ret = 0;
+	else if (ret >= 0)
+		ret = -EIO;
+
+	kfree(write_buf);
+	return ret;
+}
+
+static
+int intel_hdmi_hdcp_write_an_aksv(struct intel_digital_port *dig_port,
+				  u8 *an)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	struct intel_hdmi *hdmi = &dig_port->hdmi;
+	struct i2c_adapter *adapter = intel_gmbus_get_adapter(i915,
+							      hdmi->ddc_bus);
+	int ret;
+
+	ret = intel_hdmi_hdcp_write(dig_port, DRM_HDCP_DDC_AN, an,
+				    DRM_HDCP_AN_LEN);
+	if (ret) {
+		drm_dbg_kms(&i915->drm, "Write An over DDC failed (%d)\n",
+			    ret);
+		return ret;
+	}
+
+	ret = intel_gmbus_output_aksv(adapter);
+	if (ret < 0) {
+		drm_dbg_kms(&i915->drm, "Failed to output aksv (%d)\n", ret);
+		return ret;
+	}
+	return 0;
+}
+
+static int intel_hdmi_hdcp_read_bksv(struct intel_digital_port *dig_port,
+				     u8 *bksv)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+
+	int ret;
+	ret = intel_hdmi_hdcp_read(dig_port, DRM_HDCP_DDC_BKSV, bksv,
+				   DRM_HDCP_KSV_LEN);
+	if (ret)
+		drm_dbg_kms(&i915->drm, "Read Bksv over DDC failed (%d)\n",
+			    ret);
+	return ret;
+}
+
+static
+int intel_hdmi_hdcp_read_bstatus(struct intel_digital_port *dig_port,
+				 u8 *bstatus)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+
+	int ret;
+	ret = intel_hdmi_hdcp_read(dig_port, DRM_HDCP_DDC_BSTATUS,
+				   bstatus, DRM_HDCP_BSTATUS_LEN);
+	if (ret)
+		drm_dbg_kms(&i915->drm, "Read bstatus over DDC failed (%d)\n",
+			    ret);
+	return ret;
+}
+
+static
+int intel_hdmi_hdcp_repeater_present(struct intel_digital_port *dig_port,
+				     bool *repeater_present)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	int ret;
+	u8 val;
+
+	ret = intel_hdmi_hdcp_read(dig_port, DRM_HDCP_DDC_BCAPS, &val, 1);
+	if (ret) {
+		drm_dbg_kms(&i915->drm, "Read bcaps over DDC failed (%d)\n",
+			    ret);
+		return ret;
+	}
+	*repeater_present = val & DRM_HDCP_DDC_BCAPS_REPEATER_PRESENT;
+	return 0;
+}
+
+static
+int intel_hdmi_hdcp_read_ri_prime(struct intel_digital_port *dig_port,
+				  u8 *ri_prime)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+
+	int ret;
+	ret = intel_hdmi_hdcp_read(dig_port, DRM_HDCP_DDC_RI_PRIME,
+				   ri_prime, DRM_HDCP_RI_LEN);
+	if (ret)
+		drm_dbg_kms(&i915->drm, "Read Ri' over DDC failed (%d)\n",
+			    ret);
+	return ret;
+}
+
+static
+int intel_hdmi_hdcp_read_ksv_ready(struct intel_digital_port *dig_port,
+				   bool *ksv_ready)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	int ret;
+	u8 val;
+
+	ret = intel_hdmi_hdcp_read(dig_port, DRM_HDCP_DDC_BCAPS, &val, 1);
+	if (ret) {
+		drm_dbg_kms(&i915->drm, "Read bcaps over DDC failed (%d)\n",
+			    ret);
+		return ret;
+	}
+	*ksv_ready = val & DRM_HDCP_DDC_BCAPS_KSV_FIFO_READY;
+	return 0;
+}
+
+static
+int intel_hdmi_hdcp_read_ksv_fifo(struct intel_digital_port *dig_port,
+				  int num_downstream, u8 *ksv_fifo)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	int ret;
+	ret = intel_hdmi_hdcp_read(dig_port, DRM_HDCP_DDC_KSV_FIFO,
+				   ksv_fifo, num_downstream * DRM_HDCP_KSV_LEN);
+	if (ret) {
+		drm_dbg_kms(&i915->drm,
+			    "Read ksv fifo over DDC failed (%d)\n", ret);
+		return ret;
+	}
+	return 0;
+}
+
+static
+int intel_hdmi_hdcp_read_v_prime_part(struct intel_digital_port *dig_port,
+				      int i, u32 *part)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	int ret;
+
+	if (i >= DRM_HDCP_V_PRIME_NUM_PARTS)
+		return -EINVAL;
+
+	ret = intel_hdmi_hdcp_read(dig_port, DRM_HDCP_DDC_V_PRIME(i),
+				   part, DRM_HDCP_V_PRIME_PART_LEN);
+	if (ret)
+		drm_dbg_kms(&i915->drm, "Read V'[%d] over DDC failed (%d)\n",
+			    i, ret);
+	return ret;
+}
+
+static int kbl_repositioning_enc_en_signal(struct intel_connector *connector,
+					   enum transcoder cpu_transcoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
+	struct intel_crtc *crtc = to_intel_crtc(connector->base.state->crtc);
+	u32 scanline;
+	int ret;
+
+	for (;;) {
+		scanline = intel_de_read(dev_priv, PIPEDSL(crtc->pipe));
+		if (scanline > 100 && scanline < 200)
+			break;
+		usleep_range(25, 50);
+	}
+
+	ret = intel_ddi_toggle_hdcp_bits(&dig_port->base, cpu_transcoder,
+					 false, TRANS_DDI_HDCP_SIGNALLING);
+	if (ret) {
+		drm_err(&dev_priv->drm,
+			"Disable HDCP signalling failed (%d)\n", ret);
+		return ret;
+	}
+
+	ret = intel_ddi_toggle_hdcp_bits(&dig_port->base, cpu_transcoder,
+					 true, TRANS_DDI_HDCP_SIGNALLING);
+	if (ret) {
+		drm_err(&dev_priv->drm,
+			"Enable HDCP signalling failed (%d)\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static
+int intel_hdmi_hdcp_toggle_signalling(struct intel_digital_port *dig_port,
+				      enum transcoder cpu_transcoder,
+				      bool enable)
+{
+	struct intel_hdmi *hdmi = &dig_port->hdmi;
+	struct intel_connector *connector = hdmi->attached_connector;
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	int ret;
+
+	if (!enable)
+		usleep_range(6, 60); /* Bspec says >= 6us */
+
+	ret = intel_ddi_toggle_hdcp_bits(&dig_port->base,
+					 cpu_transcoder, enable,
+					 TRANS_DDI_HDCP_SIGNALLING);
+	if (ret) {
+		drm_err(&dev_priv->drm, "%s HDCP signalling failed (%d)\n",
+			enable ? "Enable" : "Disable", ret);
+		return ret;
+	}
+
+	/*
+	 * WA: To fix incorrect positioning of the window of
+	 * opportunity and enc_en signalling in KABYLAKE.
+	 */
+	if (IS_KABYLAKE(dev_priv) && enable)
+		return kbl_repositioning_enc_en_signal(connector,
+						       cpu_transcoder);
+
+	return 0;
+}
+
+static
+bool intel_hdmi_hdcp_check_link_once(struct intel_digital_port *dig_port,
+				     struct intel_connector *connector)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	enum port port = dig_port->base.port;
+	enum transcoder cpu_transcoder = connector->hdcp.cpu_transcoder;
+	int ret;
+	union {
+		u32 reg;
+		u8 shim[DRM_HDCP_RI_LEN];
+	} ri;
+
+	ret = intel_hdmi_hdcp_read_ri_prime(dig_port, ri.shim);
+	if (ret)
+		return false;
+
+	intel_de_write(i915, HDCP_RPRIME(i915, cpu_transcoder, port), ri.reg);
+
+	/* Wait for Ri prime match */
+	if (wait_for((intel_de_read(i915, HDCP_STATUS(i915, cpu_transcoder, port)) &
+		      (HDCP_STATUS_RI_MATCH | HDCP_STATUS_ENC)) ==
+		     (HDCP_STATUS_RI_MATCH | HDCP_STATUS_ENC), 1)) {
+		drm_dbg_kms(&i915->drm, "Ri' mismatch detected (%x)\n",
+			intel_de_read(i915, HDCP_STATUS(i915, cpu_transcoder,
+							port)));
+		return false;
+	}
+	return true;
+}
+
+static
+bool intel_hdmi_hdcp_check_link(struct intel_digital_port *dig_port,
+				struct intel_connector *connector)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	int retry;
+
+	for (retry = 0; retry < 3; retry++)
+		if (intel_hdmi_hdcp_check_link_once(dig_port, connector))
+			return true;
+
+	drm_err(&i915->drm, "Link check failed\n");
+	return false;
+}
+
+struct hdcp2_hdmi_msg_timeout {
+	u8 msg_id;
+	u16 timeout;
+};
+
+static const struct hdcp2_hdmi_msg_timeout hdcp2_msg_timeout[] = {
+	{ HDCP_2_2_AKE_SEND_CERT, HDCP_2_2_CERT_TIMEOUT_MS, },
+	{ HDCP_2_2_AKE_SEND_PAIRING_INFO, HDCP_2_2_PAIRING_TIMEOUT_MS, },
+	{ HDCP_2_2_LC_SEND_LPRIME, HDCP_2_2_HDMI_LPRIME_TIMEOUT_MS, },
+	{ HDCP_2_2_REP_SEND_RECVID_LIST, HDCP_2_2_RECVID_LIST_TIMEOUT_MS, },
+	{ HDCP_2_2_REP_STREAM_READY, HDCP_2_2_STREAM_READY_TIMEOUT_MS, },
+};
+
+static
+int intel_hdmi_hdcp2_read_rx_status(struct intel_digital_port *dig_port,
+				    u8 *rx_status)
+{
+	return intel_hdmi_hdcp_read(dig_port,
+				    HDCP_2_2_HDMI_REG_RXSTATUS_OFFSET,
+				    rx_status,
+				    HDCP_2_2_HDMI_RXSTATUS_LEN);
+}
+
+static int get_hdcp2_msg_timeout(u8 msg_id, bool is_paired)
+{
+	int i;
+
+	if (msg_id == HDCP_2_2_AKE_SEND_HPRIME) {
+		if (is_paired)
+			return HDCP_2_2_HPRIME_PAIRED_TIMEOUT_MS;
+		else
+			return HDCP_2_2_HPRIME_NO_PAIRED_TIMEOUT_MS;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(hdcp2_msg_timeout); i++) {
+		if (hdcp2_msg_timeout[i].msg_id == msg_id)
+			return hdcp2_msg_timeout[i].timeout;
+	}
+
+	return -EINVAL;
+}
+
+static int
+hdcp2_detect_msg_availability(struct intel_digital_port *dig_port,
+			      u8 msg_id, bool *msg_ready,
+			      ssize_t *msg_sz)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	u8 rx_status[HDCP_2_2_HDMI_RXSTATUS_LEN];
+	int ret;
+
+	ret = intel_hdmi_hdcp2_read_rx_status(dig_port, rx_status);
+	if (ret < 0) {
+		drm_dbg_kms(&i915->drm, "rx_status read failed. Err %d\n",
+			    ret);
+		return ret;
+	}
+
+	*msg_sz = ((HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(rx_status[1]) << 8) |
+		  rx_status[0]);
+
+	if (msg_id == HDCP_2_2_REP_SEND_RECVID_LIST)
+		*msg_ready = (HDCP_2_2_HDMI_RXSTATUS_READY(rx_status[1]) &&
+			     *msg_sz);
+	else
+		*msg_ready = *msg_sz;
+
+	return 0;
+}
+
+static ssize_t
+intel_hdmi_hdcp2_wait_for_msg(struct intel_digital_port *dig_port,
+			      u8 msg_id, bool paired)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	bool msg_ready = false;
+	int timeout, ret;
+	ssize_t msg_sz = 0;
+
+	timeout = get_hdcp2_msg_timeout(msg_id, paired);
+	if (timeout < 0)
+		return timeout;
+
+	ret = __wait_for(ret = hdcp2_detect_msg_availability(dig_port,
+							     msg_id, &msg_ready,
+							     &msg_sz),
+			 !ret && msg_ready && msg_sz, timeout * 1000,
+			 1000, 5 * 1000);
+	if (ret)
+		drm_dbg_kms(&i915->drm, "msg_id: %d, ret: %d, timeout: %d\n",
+			    msg_id, ret, timeout);
+
+	return ret ? ret : msg_sz;
+}
+
+static
+int intel_hdmi_hdcp2_write_msg(struct intel_digital_port *dig_port,
+			       void *buf, size_t size)
+{
+	unsigned int offset;
+
+	offset = HDCP_2_2_HDMI_REG_WR_MSG_OFFSET;
+	return intel_hdmi_hdcp_write(dig_port, offset, buf, size);
+}
+
+static
+int intel_hdmi_hdcp2_read_msg(struct intel_digital_port *dig_port,
+			      u8 msg_id, void *buf, size_t size)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	struct intel_hdmi *hdmi = &dig_port->hdmi;
+	struct intel_hdcp *hdcp = &hdmi->attached_connector->hdcp;
+	unsigned int offset;
+	ssize_t ret;
+
+	ret = intel_hdmi_hdcp2_wait_for_msg(dig_port, msg_id,
+					    hdcp->is_paired);
+	if (ret < 0)
+		return ret;
+
+	/*
+	 * Available msg size should be equal to or lesser than the
+	 * available buffer.
+	 */
+	if (ret > size) {
+		drm_dbg_kms(&i915->drm,
+			    "msg_sz(%zd) is more than exp size(%zu)\n",
+			    ret, size);
+		return -EINVAL;
+	}
+
+	offset = HDCP_2_2_HDMI_REG_RD_MSG_OFFSET;
+	ret = intel_hdmi_hdcp_read(dig_port, offset, buf, ret);
+	if (ret)
+		drm_dbg_kms(&i915->drm, "Failed to read msg_id: %d(%zd)\n",
+			    msg_id, ret);
+
+	return ret;
+}
+
+static
+int intel_hdmi_hdcp2_check_link(struct intel_digital_port *dig_port,
+				struct intel_connector *connector)
+{
+	u8 rx_status[HDCP_2_2_HDMI_RXSTATUS_LEN];
+	int ret;
+
+	ret = intel_hdmi_hdcp2_read_rx_status(dig_port, rx_status);
+	if (ret)
+		return ret;
+
+	/*
+	 * Re-auth request and Link Integrity Failures are represented by
+	 * same bit. i.e reauth_req.
+	 */
+	if (HDCP_2_2_HDMI_RXSTATUS_REAUTH_REQ(rx_status[1]))
+		ret = HDCP_REAUTH_REQUEST;
+	else if (HDCP_2_2_HDMI_RXSTATUS_READY(rx_status[1]))
+		ret = HDCP_TOPOLOGY_CHANGE;
+
+	return ret;
+}
+
+static
+int intel_hdmi_hdcp2_capable(struct intel_digital_port *dig_port,
+			     bool *capable)
+{
+	u8 hdcp2_version;
+	int ret;
+
+	*capable = false;
+	ret = intel_hdmi_hdcp_read(dig_port, HDCP_2_2_HDMI_REG_VER_OFFSET,
+				   &hdcp2_version, sizeof(hdcp2_version));
+	if (!ret && hdcp2_version & HDCP_2_2_HDMI_SUPPORT_MASK)
+		*capable = true;
+
+	return ret;
+}
+
+static const struct intel_hdcp_shim intel_hdmi_hdcp_shim = {
+	.write_an_aksv = intel_hdmi_hdcp_write_an_aksv,
+	.read_bksv = intel_hdmi_hdcp_read_bksv,
+	.read_bstatus = intel_hdmi_hdcp_read_bstatus,
+	.repeater_present = intel_hdmi_hdcp_repeater_present,
+	.read_ri_prime = intel_hdmi_hdcp_read_ri_prime,
+	.read_ksv_ready = intel_hdmi_hdcp_read_ksv_ready,
+	.read_ksv_fifo = intel_hdmi_hdcp_read_ksv_fifo,
+	.read_v_prime_part = intel_hdmi_hdcp_read_v_prime_part,
+	.toggle_signalling = intel_hdmi_hdcp_toggle_signalling,
+	.check_link = intel_hdmi_hdcp_check_link,
+	.write_2_2_msg = intel_hdmi_hdcp2_write_msg,
+	.read_2_2_msg = intel_hdmi_hdcp2_read_msg,
+	.check_2_2_link	= intel_hdmi_hdcp2_check_link,
+	.hdcp_2_2_capable = intel_hdmi_hdcp2_capable,
+	.protocol = HDCP_PROTOCOL_HDMI,
+};
+
+static int intel_hdmi_source_max_tmds_clock(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	int max_tmds_clock, vbt_max_tmds_clock;
+
+	if (DISPLAY_VER(dev_priv) >= 10)
+		max_tmds_clock = 594000;
+	else if (DISPLAY_VER(dev_priv) >= 8 || IS_HASWELL(dev_priv))
+		max_tmds_clock = 300000;
+	else if (DISPLAY_VER(dev_priv) >= 5)
+		max_tmds_clock = 225000;
+	else
+		max_tmds_clock = 165000;
+
+	vbt_max_tmds_clock = intel_bios_max_tmds_clock(encoder);
+	if (vbt_max_tmds_clock)
+		max_tmds_clock = min(max_tmds_clock, vbt_max_tmds_clock);
+
+	return max_tmds_clock;
+}
+
+static bool intel_has_hdmi_sink(struct intel_hdmi *hdmi,
+				const struct drm_connector_state *conn_state)
+{
+	return hdmi->has_hdmi_sink &&
+		READ_ONCE(to_intel_digital_connector_state(conn_state)->force_audio) != HDMI_AUDIO_OFF_DVI;
+}
+
+static bool intel_hdmi_is_ycbcr420(const struct intel_crtc_state *crtc_state)
+{
+	return crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420;
+}
+
+static int hdmi_port_clock_limit(struct intel_hdmi *hdmi,
+				 bool respect_downstream_limits,
+				 bool has_hdmi_sink)
+{
+	struct intel_encoder *encoder = &hdmi_to_dig_port(hdmi)->base;
+	int max_tmds_clock = intel_hdmi_source_max_tmds_clock(encoder);
+
+	if (respect_downstream_limits) {
+		struct intel_connector *connector = hdmi->attached_connector;
+		const struct drm_display_info *info = &connector->base.display_info;
+
+		if (hdmi->dp_dual_mode.max_tmds_clock)
+			max_tmds_clock = min(max_tmds_clock,
+					     hdmi->dp_dual_mode.max_tmds_clock);
+
+		if (info->max_tmds_clock)
+			max_tmds_clock = min(max_tmds_clock,
+					     info->max_tmds_clock);
+		else if (!has_hdmi_sink)
+			max_tmds_clock = min(max_tmds_clock, 165000);
+	}
+
+	return max_tmds_clock;
+}
+
+static enum drm_mode_status
+hdmi_port_clock_valid(struct intel_hdmi *hdmi,
+		      int clock, bool respect_downstream_limits,
+		      bool has_hdmi_sink)
+{
+	struct drm_i915_private *dev_priv = intel_hdmi_to_i915(hdmi);
+	enum phy phy = intel_port_to_phy(dev_priv, hdmi_to_dig_port(hdmi)->base.port);
+
+	if (clock < 25000)
+		return MODE_CLOCK_LOW;
+	if (clock > hdmi_port_clock_limit(hdmi, respect_downstream_limits,
+					  has_hdmi_sink))
+		return MODE_CLOCK_HIGH;
+
+	/* GLK DPLL can't generate 446-480 MHz */
+	if (IS_GEMINILAKE(dev_priv) && clock > 446666 && clock < 480000)
+		return MODE_CLOCK_RANGE;
+
+	/* BXT/GLK DPLL can't generate 223-240 MHz */
+	if ((IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) &&
+	    clock > 223333 && clock < 240000)
+		return MODE_CLOCK_RANGE;
+
+	/* CHV DPLL can't generate 216-240 MHz */
+	if (IS_CHERRYVIEW(dev_priv) && clock > 216000 && clock < 240000)
+		return MODE_CLOCK_RANGE;
+
+	/* ICL+ combo PHY PLL can't generate 500-533.2 MHz */
+	if (intel_phy_is_combo(dev_priv, phy) && clock > 500000 && clock < 533200)
+		return MODE_CLOCK_RANGE;
+
+	/* ICL+ TC PHY PLL can't generate 500-532.8 MHz */
+	if (intel_phy_is_tc(dev_priv, phy) && clock > 500000 && clock < 532800)
+		return MODE_CLOCK_RANGE;
+
+	/*
+	 * SNPS PHYs' MPLLB table-based programming can only handle a fixed
+	 * set of link rates.
+	 *
+	 * FIXME: We will hopefully get an algorithmic way of programming
+	 * the MPLLB for HDMI in the future.
+	 */
+	if (IS_DG2(dev_priv))
+		return intel_snps_phy_check_hdmi_link_rate(clock);
+
+	return MODE_OK;
+}
+
+int intel_hdmi_tmds_clock(int clock, int bpc, bool ycbcr420_output)
+{
+	/* YCBCR420 TMDS rate requirement is half the pixel clock */
+	if (ycbcr420_output)
+		clock /= 2;
+
+	/*
+	 * Need to adjust the port link by:
+	 *  1.5x for 12bpc
+	 *  1.25x for 10bpc
+	 */
+	return DIV_ROUND_CLOSEST(clock * bpc, 8);
+}
+
+static bool intel_hdmi_source_bpc_possible(struct drm_i915_private *i915, int bpc)
+{
+	switch (bpc) {
+	case 12:
+		return !HAS_GMCH(i915);
+	case 10:
+		return DISPLAY_VER(i915) >= 11;
+	case 8:
+		return true;
+	default:
+		MISSING_CASE(bpc);
+		return false;
+	}
+}
+
+static bool intel_hdmi_sink_bpc_possible(struct drm_connector *connector,
+					 int bpc, bool has_hdmi_sink, bool ycbcr420_output)
+{
+	const struct drm_display_info *info = &connector->display_info;
+	const struct drm_hdmi_info *hdmi = &info->hdmi;
+
+	switch (bpc) {
+	case 12:
+		if (!has_hdmi_sink)
+			return false;
+
+		if (ycbcr420_output)
+			return hdmi->y420_dc_modes & DRM_EDID_YCBCR420_DC_36;
+		else
+			return info->edid_hdmi_rgb444_dc_modes & DRM_EDID_HDMI_DC_36;
+	case 10:
+		if (!has_hdmi_sink)
+			return false;
+
+		if (ycbcr420_output)
+			return hdmi->y420_dc_modes & DRM_EDID_YCBCR420_DC_30;
+		else
+			return info->edid_hdmi_rgb444_dc_modes & DRM_EDID_HDMI_DC_30;
+	case 8:
+		return true;
+	default:
+		MISSING_CASE(bpc);
+		return false;
+	}
+}
+
+static enum drm_mode_status
+intel_hdmi_mode_clock_valid(struct drm_connector *connector, int clock,
+			    bool has_hdmi_sink, bool ycbcr420_output)
+{
+	struct drm_i915_private *i915 = to_i915(connector->dev);
+	struct intel_hdmi *hdmi = intel_attached_hdmi(to_intel_connector(connector));
+	enum drm_mode_status status = MODE_OK;
+	int bpc;
+
+	/*
+	 * Try all color depths since valid port clock range
+	 * can have holes. Any mode that can be used with at
+	 * least one color depth is accepted.
+	 */
+	for (bpc = 12; bpc >= 8; bpc -= 2) {
+		int tmds_clock = intel_hdmi_tmds_clock(clock, bpc, ycbcr420_output);
+
+		if (!intel_hdmi_source_bpc_possible(i915, bpc))
+			continue;
+
+		if (!intel_hdmi_sink_bpc_possible(connector, bpc, has_hdmi_sink, ycbcr420_output))
+			continue;
+
+		status = hdmi_port_clock_valid(hdmi, tmds_clock, true, has_hdmi_sink);
+		if (status == MODE_OK)
+			return MODE_OK;
+	}
+
+	/* can never happen */
+	drm_WARN_ON(&i915->drm, status == MODE_OK);
+
+	return status;
+}
+
+static enum drm_mode_status
+intel_hdmi_mode_valid(struct drm_connector *connector,
+		      struct drm_display_mode *mode)
+{
+	struct intel_hdmi *hdmi = intel_attached_hdmi(to_intel_connector(connector));
+	struct drm_i915_private *dev_priv = intel_hdmi_to_i915(hdmi);
+	enum drm_mode_status status;
+	int clock = mode->clock;
+	int max_dotclk = to_i915(connector->dev)->max_dotclk_freq;
+	bool has_hdmi_sink = intel_has_hdmi_sink(hdmi, connector->state);
+	bool ycbcr_420_only;
+
+	status = intel_cpu_transcoder_mode_valid(dev_priv, mode);
+	if (status != MODE_OK)
+		return status;
+
+	if ((mode->flags & DRM_MODE_FLAG_3D_MASK) == DRM_MODE_FLAG_3D_FRAME_PACKING)
+		clock *= 2;
+
+	if (clock > max_dotclk)
+		return MODE_CLOCK_HIGH;
+
+	if (mode->flags & DRM_MODE_FLAG_DBLCLK) {
+		if (!has_hdmi_sink)
+			return MODE_CLOCK_LOW;
+		clock *= 2;
+	}
+
+	/*
+	 * HDMI2.1 requires higher resolution modes like 8k60, 4K120 to be
+	 * enumerated only if FRL is supported. Current platforms do not support
+	 * FRL so prune the higher resolution modes that require doctclock more
+	 * than 600MHz.
+	 */
+	if (clock > 600000)
+		return MODE_CLOCK_HIGH;
+
+	ycbcr_420_only = drm_mode_is_420_only(&connector->display_info, mode);
+
+	status = intel_hdmi_mode_clock_valid(connector, clock, has_hdmi_sink, ycbcr_420_only);
+	if (status != MODE_OK) {
+		if (ycbcr_420_only ||
+		    !connector->ycbcr_420_allowed ||
+		    !drm_mode_is_420_also(&connector->display_info, mode))
+			return status;
+
+		status = intel_hdmi_mode_clock_valid(connector, clock, has_hdmi_sink, true);
+		if (status != MODE_OK)
+			return status;
+	}
+
+	return intel_mode_valid_max_plane_size(dev_priv, mode, false);
+}
+
+bool intel_hdmi_bpc_possible(const struct intel_crtc_state *crtc_state,
+			     int bpc, bool has_hdmi_sink, bool ycbcr420_output)
+{
+	struct drm_atomic_state *state = crtc_state->uapi.state;
+	struct drm_connector_state *connector_state;
+	struct drm_connector *connector;
+	int i;
+
+	for_each_new_connector_in_state(state, connector, connector_state, i) {
+		if (connector_state->crtc != crtc_state->uapi.crtc)
+			continue;
+
+		if (!intel_hdmi_sink_bpc_possible(connector, bpc, has_hdmi_sink, ycbcr420_output))
+			return false;
+	}
+
+	return true;
+}
+
+static bool hdmi_bpc_possible(const struct intel_crtc_state *crtc_state, int bpc)
+{
+	struct drm_i915_private *dev_priv =
+		to_i915(crtc_state->uapi.crtc->dev);
+	const struct drm_display_mode *adjusted_mode =
+		&crtc_state->hw.adjusted_mode;
+
+	if (!intel_hdmi_source_bpc_possible(dev_priv, bpc))
+		return false;
+
+	/*
+	 * HDMI deep color affects the clocks, so it's only possible
+	 * when not cloning with other encoder types.
+	 */
+	if (bpc > 8 && crtc_state->output_types != BIT(INTEL_OUTPUT_HDMI))
+		return false;
+
+	/* Display Wa_1405510057:icl,ehl */
+	if (intel_hdmi_is_ycbcr420(crtc_state) &&
+	    bpc == 10 && DISPLAY_VER(dev_priv) == 11 &&
+	    (adjusted_mode->crtc_hblank_end -
+	     adjusted_mode->crtc_hblank_start) % 8 == 2)
+		return false;
+
+	return intel_hdmi_bpc_possible(crtc_state, bpc, crtc_state->has_hdmi_sink,
+				       intel_hdmi_is_ycbcr420(crtc_state));
+}
+
+static int intel_hdmi_compute_bpc(struct intel_encoder *encoder,
+				  struct intel_crtc_state *crtc_state,
+				  int clock, bool respect_downstream_limits)
+{
+	struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
+	bool ycbcr420_output = intel_hdmi_is_ycbcr420(crtc_state);
+	int bpc;
+
+	/*
+	 * pipe_bpp could already be below 8bpc due to FDI
+	 * bandwidth constraints. HDMI minimum is 8bpc however.
+	 */
+	bpc = max(crtc_state->pipe_bpp / 3, 8);
+
+	/*
+	 * We will never exceed downstream TMDS clock limits while
+	 * attempting deep color. If the user insists on forcing an
+	 * out of spec mode they will have to be satisfied with 8bpc.
+	 */
+	if (!respect_downstream_limits)
+		bpc = 8;
+
+	for (; bpc >= 8; bpc -= 2) {
+		int tmds_clock = intel_hdmi_tmds_clock(clock, bpc, ycbcr420_output);
+
+		if (hdmi_bpc_possible(crtc_state, bpc) &&
+		    hdmi_port_clock_valid(intel_hdmi, tmds_clock,
+					  respect_downstream_limits,
+					  crtc_state->has_hdmi_sink) == MODE_OK)
+			return bpc;
+	}
+
+	return -EINVAL;
+}
+
+static int intel_hdmi_compute_clock(struct intel_encoder *encoder,
+				    struct intel_crtc_state *crtc_state,
+				    bool respect_downstream_limits)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	const struct drm_display_mode *adjusted_mode =
+		&crtc_state->hw.adjusted_mode;
+	int bpc, clock = adjusted_mode->crtc_clock;
+
+	if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK)
+		clock *= 2;
+
+	bpc = intel_hdmi_compute_bpc(encoder, crtc_state, clock,
+				     respect_downstream_limits);
+	if (bpc < 0)
+		return bpc;
+
+	crtc_state->port_clock =
+		intel_hdmi_tmds_clock(clock, bpc, intel_hdmi_is_ycbcr420(crtc_state));
+
+	/*
+	 * pipe_bpp could already be below 8bpc due to
+	 * FDI bandwidth constraints. We shouldn't bump it
+	 * back up to the HDMI minimum 8bpc in that case.
+	 */
+	crtc_state->pipe_bpp = min(crtc_state->pipe_bpp, bpc * 3);
+
+	drm_dbg_kms(&i915->drm,
+		    "picking %d bpc for HDMI output (pipe bpp: %d)\n",
+		    bpc, crtc_state->pipe_bpp);
+
+	return 0;
+}
+
+bool intel_hdmi_limited_color_range(const struct intel_crtc_state *crtc_state,
+				    const struct drm_connector_state *conn_state)
+{
+	const struct intel_digital_connector_state *intel_conn_state =
+		to_intel_digital_connector_state(conn_state);
+	const struct drm_display_mode *adjusted_mode =
+		&crtc_state->hw.adjusted_mode;
+
+	/*
+	 * Our YCbCr output is always limited range.
+	 * crtc_state->limited_color_range only applies to RGB,
+	 * and it must never be set for YCbCr or we risk setting
+	 * some conflicting bits in PIPECONF which will mess up
+	 * the colors on the monitor.
+	 */
+	if (crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB)
+		return false;
+
+	if (intel_conn_state->broadcast_rgb == INTEL_BROADCAST_RGB_AUTO) {
+		/* See CEA-861-E - 5.1 Default Encoding Parameters */
+		return crtc_state->has_hdmi_sink &&
+			drm_default_rgb_quant_range(adjusted_mode) ==
+			HDMI_QUANTIZATION_RANGE_LIMITED;
+	} else {
+		return intel_conn_state->broadcast_rgb == INTEL_BROADCAST_RGB_LIMITED;
+	}
+}
+
+static bool intel_hdmi_has_audio(struct intel_encoder *encoder,
+				 const struct intel_crtc_state *crtc_state,
+				 const struct drm_connector_state *conn_state)
+{
+	struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
+	const struct intel_digital_connector_state *intel_conn_state =
+		to_intel_digital_connector_state(conn_state);
+
+	if (!crtc_state->has_hdmi_sink)
+		return false;
+
+	if (intel_conn_state->force_audio == HDMI_AUDIO_AUTO)
+		return intel_hdmi->has_audio;
+	else
+		return intel_conn_state->force_audio == HDMI_AUDIO_ON;
+}
+
+static enum intel_output_format
+intel_hdmi_output_format(struct intel_connector *connector,
+			 bool ycbcr_420_output)
+{
+	if (connector->base.ycbcr_420_allowed && ycbcr_420_output)
+		return INTEL_OUTPUT_FORMAT_YCBCR420;
+	else
+		return INTEL_OUTPUT_FORMAT_RGB;
+}
+
+static int intel_hdmi_compute_output_format(struct intel_encoder *encoder,
+					    struct intel_crtc_state *crtc_state,
+					    const struct drm_connector_state *conn_state,
+					    bool respect_downstream_limits)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	const struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode;
+	const struct drm_display_info *info = &connector->base.display_info;
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+	bool ycbcr_420_only = drm_mode_is_420_only(info, adjusted_mode);
+	int ret;
+
+	crtc_state->output_format = intel_hdmi_output_format(connector, ycbcr_420_only);
+
+	if (ycbcr_420_only && !intel_hdmi_is_ycbcr420(crtc_state)) {
+		drm_dbg_kms(&i915->drm,
+			    "YCbCr 4:2:0 mode but YCbCr 4:2:0 output not possible. Falling back to RGB.\n");
+		crtc_state->output_format = INTEL_OUTPUT_FORMAT_RGB;
+	}
+
+	ret = intel_hdmi_compute_clock(encoder, crtc_state, respect_downstream_limits);
+	if (ret) {
+		if (intel_hdmi_is_ycbcr420(crtc_state) ||
+		    !connector->base.ycbcr_420_allowed ||
+		    !drm_mode_is_420_also(info, adjusted_mode))
+			return ret;
+
+		crtc_state->output_format = intel_hdmi_output_format(connector, true);
+		ret = intel_hdmi_compute_clock(encoder, crtc_state, respect_downstream_limits);
+	}
+
+	return ret;
+}
+
+int intel_hdmi_compute_config(struct intel_encoder *encoder,
+			      struct intel_crtc_state *pipe_config,
+			      struct drm_connector_state *conn_state)
+{
+	struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct drm_display_mode *adjusted_mode = &pipe_config->hw.adjusted_mode;
+	struct drm_connector *connector = conn_state->connector;
+	struct drm_scdc *scdc = &connector->display_info.hdmi.scdc;
+	int ret;
+
+	if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)
+		return -EINVAL;
+
+	pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
+	pipe_config->has_hdmi_sink = intel_has_hdmi_sink(intel_hdmi,
+							 conn_state);
+
+	if (pipe_config->has_hdmi_sink)
+		pipe_config->has_infoframe = true;
+
+	if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK)
+		pipe_config->pixel_multiplier = 2;
+
+	if (HAS_PCH_SPLIT(dev_priv) && !HAS_DDI(dev_priv))
+		pipe_config->has_pch_encoder = true;
+
+	pipe_config->has_audio =
+		intel_hdmi_has_audio(encoder, pipe_config, conn_state);
+
+	/*
+	 * Try to respect downstream TMDS clock limits first, if
+	 * that fails assume the user might know something we don't.
+	 */
+	ret = intel_hdmi_compute_output_format(encoder, pipe_config, conn_state, true);
+	if (ret)
+		ret = intel_hdmi_compute_output_format(encoder, pipe_config, conn_state, false);
+	if (ret) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "unsupported HDMI clock (%d kHz), rejecting mode\n",
+			    pipe_config->hw.adjusted_mode.crtc_clock);
+		return ret;
+	}
+
+	if (intel_hdmi_is_ycbcr420(pipe_config)) {
+		ret = intel_panel_fitting(pipe_config, conn_state);
+		if (ret)
+			return ret;
+	}
+
+	pipe_config->limited_color_range =
+		intel_hdmi_limited_color_range(pipe_config, conn_state);
+
+	if (conn_state->picture_aspect_ratio)
+		adjusted_mode->picture_aspect_ratio =
+			conn_state->picture_aspect_ratio;
+
+	pipe_config->lane_count = 4;
+
+	if (scdc->scrambling.supported && DISPLAY_VER(dev_priv) >= 10) {
+		if (scdc->scrambling.low_rates)
+			pipe_config->hdmi_scrambling = true;
+
+		if (pipe_config->port_clock > 340000) {
+			pipe_config->hdmi_scrambling = true;
+			pipe_config->hdmi_high_tmds_clock_ratio = true;
+		}
+	}
+
+	intel_hdmi_compute_gcp_infoframe(encoder, pipe_config,
+					 conn_state);
+
+	if (!intel_hdmi_compute_avi_infoframe(encoder, pipe_config, conn_state)) {
+		drm_dbg_kms(&dev_priv->drm, "bad AVI infoframe\n");
+		return -EINVAL;
+	}
+
+	if (!intel_hdmi_compute_spd_infoframe(encoder, pipe_config, conn_state)) {
+		drm_dbg_kms(&dev_priv->drm, "bad SPD infoframe\n");
+		return -EINVAL;
+	}
+
+	if (!intel_hdmi_compute_hdmi_infoframe(encoder, pipe_config, conn_state)) {
+		drm_dbg_kms(&dev_priv->drm, "bad HDMI infoframe\n");
+		return -EINVAL;
+	}
+
+	if (!intel_hdmi_compute_drm_infoframe(encoder, pipe_config, conn_state)) {
+		drm_dbg_kms(&dev_priv->drm, "bad DRM infoframe\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+void intel_hdmi_encoder_shutdown(struct intel_encoder *encoder)
+{
+	struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
+
+	/*
+	 * Give a hand to buggy BIOSen which forget to turn
+	 * the TMDS output buffers back on after a reboot.
+	 */
+	intel_dp_dual_mode_set_tmds_output(intel_hdmi, true);
+}
+
+static void
+intel_hdmi_unset_edid(struct drm_connector *connector)
+{
+	struct intel_hdmi *intel_hdmi = intel_attached_hdmi(to_intel_connector(connector));
+
+	intel_hdmi->has_hdmi_sink = false;
+	intel_hdmi->has_audio = false;
+
+	intel_hdmi->dp_dual_mode.type = DRM_DP_DUAL_MODE_NONE;
+	intel_hdmi->dp_dual_mode.max_tmds_clock = 0;
+
+	kfree(to_intel_connector(connector)->detect_edid);
+	to_intel_connector(connector)->detect_edid = NULL;
+}
+
+static void
+intel_hdmi_dp_dual_mode_detect(struct drm_connector *connector, bool has_edid)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->dev);
+	struct intel_hdmi *hdmi = intel_attached_hdmi(to_intel_connector(connector));
+	enum port port = hdmi_to_dig_port(hdmi)->base.port;
+	struct i2c_adapter *adapter =
+		intel_gmbus_get_adapter(dev_priv, hdmi->ddc_bus);
+	enum drm_dp_dual_mode_type type = drm_dp_dual_mode_detect(&dev_priv->drm, adapter);
+
+	/*
+	 * Type 1 DVI adaptors are not required to implement any
+	 * registers, so we can't always detect their presence.
+	 * Ideally we should be able to check the state of the
+	 * CONFIG1 pin, but no such luck on our hardware.
+	 *
+	 * The only method left to us is to check the VBT to see
+	 * if the port is a dual mode capable DP port. But let's
+	 * only do that when we sucesfully read the EDID, to avoid
+	 * confusing log messages about DP dual mode adaptors when
+	 * there's nothing connected to the port.
+	 */
+	if (type == DRM_DP_DUAL_MODE_UNKNOWN) {
+		/* An overridden EDID imply that we want this port for testing.
+		 * Make sure not to set limits for that port.
+		 */
+		if (has_edid && !connector->override_edid &&
+		    intel_bios_is_port_dp_dual_mode(dev_priv, port)) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "Assuming DP dual mode adaptor presence based on VBT\n");
+			type = DRM_DP_DUAL_MODE_TYPE1_DVI;
+		} else {
+			type = DRM_DP_DUAL_MODE_NONE;
+		}
+	}
+
+	if (type == DRM_DP_DUAL_MODE_NONE)
+		return;
+
+	hdmi->dp_dual_mode.type = type;
+	hdmi->dp_dual_mode.max_tmds_clock =
+		drm_dp_dual_mode_max_tmds_clock(&dev_priv->drm, type, adapter);
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "DP dual mode adaptor (%s) detected (max TMDS clock: %d kHz)\n",
+		    drm_dp_get_dual_mode_type_name(type),
+		    hdmi->dp_dual_mode.max_tmds_clock);
+
+	/* Older VBTs are often buggy and can't be trusted :( Play it safe. */
+	if ((DISPLAY_VER(dev_priv) >= 8 || IS_HASWELL(dev_priv)) &&
+	    !intel_bios_is_port_dp_dual_mode(dev_priv, port)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Ignoring DP dual mode adaptor max TMDS clock for native HDMI port\n");
+		hdmi->dp_dual_mode.max_tmds_clock = 0;
+	}
+}
+
+static bool
+intel_hdmi_set_edid(struct drm_connector *connector)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->dev);
+	struct intel_hdmi *intel_hdmi = intel_attached_hdmi(to_intel_connector(connector));
+	intel_wakeref_t wakeref;
+	struct edid *edid;
+	bool connected = false;
+	struct i2c_adapter *i2c;
+
+	wakeref = intel_display_power_get(dev_priv, POWER_DOMAIN_GMBUS);
+
+	i2c = intel_gmbus_get_adapter(dev_priv, intel_hdmi->ddc_bus);
+
+	edid = drm_get_edid(connector, i2c);
+
+	if (!edid && !intel_gmbus_is_forced_bit(i2c)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "HDMI GMBUS EDID read failed, retry using GPIO bit-banging\n");
+		intel_gmbus_force_bit(i2c, true);
+		edid = drm_get_edid(connector, i2c);
+		intel_gmbus_force_bit(i2c, false);
+	}
+
+	intel_hdmi_dp_dual_mode_detect(connector, edid != NULL);
+
+	intel_display_power_put(dev_priv, POWER_DOMAIN_GMBUS, wakeref);
+
+	to_intel_connector(connector)->detect_edid = edid;
+	if (edid && edid->input & DRM_EDID_INPUT_DIGITAL) {
+		intel_hdmi->has_audio = drm_detect_monitor_audio(edid);
+		intel_hdmi->has_hdmi_sink = drm_detect_hdmi_monitor(edid);
+
+		connected = true;
+	}
+
+	cec_notifier_set_phys_addr_from_edid(intel_hdmi->cec_notifier, edid);
+
+	return connected;
+}
+
+static enum drm_connector_status
+intel_hdmi_detect(struct drm_connector *connector, bool force)
+{
+	enum drm_connector_status status = connector_status_disconnected;
+	struct drm_i915_private *dev_priv = to_i915(connector->dev);
+	struct intel_hdmi *intel_hdmi = intel_attached_hdmi(to_intel_connector(connector));
+	struct intel_encoder *encoder = &hdmi_to_dig_port(intel_hdmi)->base;
+	intel_wakeref_t wakeref;
+
+	drm_dbg_kms(&dev_priv->drm, "[CONNECTOR:%d:%s]\n",
+		    connector->base.id, connector->name);
+
+	if (!INTEL_DISPLAY_ENABLED(dev_priv))
+		return connector_status_disconnected;
+
+	wakeref = intel_display_power_get(dev_priv, POWER_DOMAIN_GMBUS);
+
+	if (DISPLAY_VER(dev_priv) >= 11 &&
+	    !intel_digital_port_connected(encoder))
+		goto out;
+
+	intel_hdmi_unset_edid(connector);
+
+	if (intel_hdmi_set_edid(connector))
+		status = connector_status_connected;
+
+out:
+	intel_display_power_put(dev_priv, POWER_DOMAIN_GMBUS, wakeref);
+
+	if (status != connector_status_connected)
+		cec_notifier_phys_addr_invalidate(intel_hdmi->cec_notifier);
+
+	/*
+	 * Make sure the refs for power wells enabled during detect are
+	 * dropped to avoid a new detect cycle triggered by HPD polling.
+	 */
+	intel_display_power_flush_work(dev_priv);
+
+	return status;
+}
+
+static void
+intel_hdmi_force(struct drm_connector *connector)
+{
+	struct drm_i915_private *i915 = to_i915(connector->dev);
+
+	drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s]\n",
+		    connector->base.id, connector->name);
+
+	intel_hdmi_unset_edid(connector);
+
+	if (connector->status != connector_status_connected)
+		return;
+
+	intel_hdmi_set_edid(connector);
+}
+
+static int intel_hdmi_get_modes(struct drm_connector *connector)
+{
+	struct edid *edid;
+
+	edid = to_intel_connector(connector)->detect_edid;
+	if (edid == NULL)
+		return 0;
+
+	return intel_connector_update_modes(connector, edid);
+}
+
+static struct i2c_adapter *
+intel_hdmi_get_i2c_adapter(struct drm_connector *connector)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->dev);
+	struct intel_hdmi *intel_hdmi = intel_attached_hdmi(to_intel_connector(connector));
+
+	return intel_gmbus_get_adapter(dev_priv, intel_hdmi->ddc_bus);
+}
+
+static void intel_hdmi_create_i2c_symlink(struct drm_connector *connector)
+{
+	struct drm_i915_private *i915 = to_i915(connector->dev);
+	struct i2c_adapter *adapter = intel_hdmi_get_i2c_adapter(connector);
+	struct kobject *i2c_kobj = &adapter->dev.kobj;
+	struct kobject *connector_kobj = &connector->kdev->kobj;
+	int ret;
+
+	ret = sysfs_create_link(connector_kobj, i2c_kobj, i2c_kobj->name);
+	if (ret)
+		drm_err(&i915->drm, "Failed to create i2c symlink (%d)\n", ret);
+}
+
+static void intel_hdmi_remove_i2c_symlink(struct drm_connector *connector)
+{
+	struct i2c_adapter *adapter = intel_hdmi_get_i2c_adapter(connector);
+	struct kobject *i2c_kobj = &adapter->dev.kobj;
+	struct kobject *connector_kobj = &connector->kdev->kobj;
+
+	sysfs_remove_link(connector_kobj, i2c_kobj->name);
+}
+
+static int
+intel_hdmi_connector_register(struct drm_connector *connector)
+{
+	int ret;
+
+	ret = intel_connector_register(connector);
+	if (ret)
+		return ret;
+
+	intel_hdmi_create_i2c_symlink(connector);
+
+	return ret;
+}
+
+static void intel_hdmi_connector_unregister(struct drm_connector *connector)
+{
+	struct cec_notifier *n = intel_attached_hdmi(to_intel_connector(connector))->cec_notifier;
+
+	cec_notifier_conn_unregister(n);
+
+	intel_hdmi_remove_i2c_symlink(connector);
+	intel_connector_unregister(connector);
+}
+
+static const struct drm_connector_funcs intel_hdmi_connector_funcs = {
+	.detect = intel_hdmi_detect,
+	.force = intel_hdmi_force,
+	.fill_modes = drm_helper_probe_single_connector_modes,
+	.atomic_get_property = intel_digital_connector_atomic_get_property,
+	.atomic_set_property = intel_digital_connector_atomic_set_property,
+	.late_register = intel_hdmi_connector_register,
+	.early_unregister = intel_hdmi_connector_unregister,
+	.destroy = intel_connector_destroy,
+	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+	.atomic_duplicate_state = intel_digital_connector_duplicate_state,
+};
+
+static const struct drm_connector_helper_funcs intel_hdmi_connector_helper_funcs = {
+	.get_modes = intel_hdmi_get_modes,
+	.mode_valid = intel_hdmi_mode_valid,
+	.atomic_check = intel_digital_connector_atomic_check,
+};
+
+static void
+intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct drm_connector *connector)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->dev);
+
+	intel_attach_force_audio_property(connector);
+	intel_attach_broadcast_rgb_property(connector);
+	intel_attach_aspect_ratio_property(connector);
+
+	intel_attach_hdmi_colorspace_property(connector);
+	drm_connector_attach_content_type_property(connector);
+
+	if (DISPLAY_VER(dev_priv) >= 10)
+		drm_connector_attach_hdr_output_metadata_property(connector);
+
+	if (!HAS_GMCH(dev_priv))
+		drm_connector_attach_max_bpc_property(connector, 8, 12);
+}
+
+/*
+ * intel_hdmi_handle_sink_scrambling: handle sink scrambling/clock ratio setup
+ * @encoder: intel_encoder
+ * @connector: drm_connector
+ * @high_tmds_clock_ratio = bool to indicate if the function needs to set
+ *  or reset the high tmds clock ratio for scrambling
+ * @scrambling: bool to Indicate if the function needs to set or reset
+ *  sink scrambling
+ *
+ * This function handles scrambling on HDMI 2.0 capable sinks.
+ * If required clock rate is > 340 Mhz && scrambling is supported by sink
+ * it enables scrambling. This should be called before enabling the HDMI
+ * 2.0 port, as the sink can choose to disable the scrambling if it doesn't
+ * detect a scrambled clock within 100 ms.
+ *
+ * Returns:
+ * True on success, false on failure.
+ */
+bool intel_hdmi_handle_sink_scrambling(struct intel_encoder *encoder,
+				       struct drm_connector *connector,
+				       bool high_tmds_clock_ratio,
+				       bool scrambling)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
+	struct drm_scrambling *sink_scrambling =
+		&connector->display_info.hdmi.scdc.scrambling;
+	struct i2c_adapter *adapter =
+		intel_gmbus_get_adapter(dev_priv, intel_hdmi->ddc_bus);
+
+	if (!sink_scrambling->supported)
+		return true;
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "[CONNECTOR:%d:%s] scrambling=%s, TMDS bit clock ratio=1/%d\n",
+		    connector->base.id, connector->name,
+		    str_yes_no(scrambling), high_tmds_clock_ratio ? 40 : 10);
+
+	/* Set TMDS bit clock ratio to 1/40 or 1/10, and enable/disable scrambling */
+	return drm_scdc_set_high_tmds_clock_ratio(adapter,
+						  high_tmds_clock_ratio) &&
+		drm_scdc_set_scrambling(adapter, scrambling);
+}
+
+static u8 chv_port_to_ddc_pin(struct drm_i915_private *dev_priv, enum port port)
+{
+	u8 ddc_pin;
+
+	switch (port) {
+	case PORT_B:
+		ddc_pin = GMBUS_PIN_DPB;
+		break;
+	case PORT_C:
+		ddc_pin = GMBUS_PIN_DPC;
+		break;
+	case PORT_D:
+		ddc_pin = GMBUS_PIN_DPD_CHV;
+		break;
+	default:
+		MISSING_CASE(port);
+		ddc_pin = GMBUS_PIN_DPB;
+		break;
+	}
+	return ddc_pin;
+}
+
+static u8 bxt_port_to_ddc_pin(struct drm_i915_private *dev_priv, enum port port)
+{
+	u8 ddc_pin;
+
+	switch (port) {
+	case PORT_B:
+		ddc_pin = GMBUS_PIN_1_BXT;
+		break;
+	case PORT_C:
+		ddc_pin = GMBUS_PIN_2_BXT;
+		break;
+	default:
+		MISSING_CASE(port);
+		ddc_pin = GMBUS_PIN_1_BXT;
+		break;
+	}
+	return ddc_pin;
+}
+
+static u8 cnp_port_to_ddc_pin(struct drm_i915_private *dev_priv,
+			      enum port port)
+{
+	u8 ddc_pin;
+
+	switch (port) {
+	case PORT_B:
+		ddc_pin = GMBUS_PIN_1_BXT;
+		break;
+	case PORT_C:
+		ddc_pin = GMBUS_PIN_2_BXT;
+		break;
+	case PORT_D:
+		ddc_pin = GMBUS_PIN_4_CNP;
+		break;
+	case PORT_F:
+		ddc_pin = GMBUS_PIN_3_BXT;
+		break;
+	default:
+		MISSING_CASE(port);
+		ddc_pin = GMBUS_PIN_1_BXT;
+		break;
+	}
+	return ddc_pin;
+}
+
+static u8 icl_port_to_ddc_pin(struct drm_i915_private *dev_priv, enum port port)
+{
+	enum phy phy = intel_port_to_phy(dev_priv, port);
+
+	if (intel_phy_is_combo(dev_priv, phy))
+		return GMBUS_PIN_1_BXT + port;
+	else if (intel_phy_is_tc(dev_priv, phy))
+		return GMBUS_PIN_9_TC1_ICP + intel_port_to_tc(dev_priv, port);
+
+	drm_WARN(&dev_priv->drm, 1, "Unknown port:%c\n", port_name(port));
+	return GMBUS_PIN_2_BXT;
+}
+
+static u8 mcc_port_to_ddc_pin(struct drm_i915_private *dev_priv, enum port port)
+{
+	enum phy phy = intel_port_to_phy(dev_priv, port);
+	u8 ddc_pin;
+
+	switch (phy) {
+	case PHY_A:
+		ddc_pin = GMBUS_PIN_1_BXT;
+		break;
+	case PHY_B:
+		ddc_pin = GMBUS_PIN_2_BXT;
+		break;
+	case PHY_C:
+		ddc_pin = GMBUS_PIN_9_TC1_ICP;
+		break;
+	default:
+		MISSING_CASE(phy);
+		ddc_pin = GMBUS_PIN_1_BXT;
+		break;
+	}
+	return ddc_pin;
+}
+
+static u8 rkl_port_to_ddc_pin(struct drm_i915_private *dev_priv, enum port port)
+{
+	enum phy phy = intel_port_to_phy(dev_priv, port);
+
+	WARN_ON(port == PORT_C);
+
+	/*
+	 * Pin mapping for RKL depends on which PCH is present.  With TGP, the
+	 * final two outputs use type-c pins, even though they're actually
+	 * combo outputs.  With CMP, the traditional DDI A-D pins are used for
+	 * all outputs.
+	 */
+	if (INTEL_PCH_TYPE(dev_priv) >= PCH_TGP && phy >= PHY_C)
+		return GMBUS_PIN_9_TC1_ICP + phy - PHY_C;
+
+	return GMBUS_PIN_1_BXT + phy;
+}
+
+static u8 gen9bc_tgp_port_to_ddc_pin(struct drm_i915_private *i915, enum port port)
+{
+	enum phy phy = intel_port_to_phy(i915, port);
+
+	drm_WARN_ON(&i915->drm, port == PORT_A);
+
+	/*
+	 * Pin mapping for GEN9 BC depends on which PCH is present.  With TGP,
+	 * final two outputs use type-c pins, even though they're actually
+	 * combo outputs.  With CMP, the traditional DDI A-D pins are used for
+	 * all outputs.
+	 */
+	if (INTEL_PCH_TYPE(i915) >= PCH_TGP && phy >= PHY_C)
+		return GMBUS_PIN_9_TC1_ICP + phy - PHY_C;
+
+	return GMBUS_PIN_1_BXT + phy;
+}
+
+static u8 dg1_port_to_ddc_pin(struct drm_i915_private *dev_priv, enum port port)
+{
+	return intel_port_to_phy(dev_priv, port) + 1;
+}
+
+static u8 adls_port_to_ddc_pin(struct drm_i915_private *dev_priv, enum port port)
+{
+	enum phy phy = intel_port_to_phy(dev_priv, port);
+
+	WARN_ON(port == PORT_B || port == PORT_C);
+
+	/*
+	 * Pin mapping for ADL-S requires TC pins for all combo phy outputs
+	 * except first combo output.
+	 */
+	if (phy == PHY_A)
+		return GMBUS_PIN_1_BXT;
+
+	return GMBUS_PIN_9_TC1_ICP + phy - PHY_B;
+}
+
+static u8 g4x_port_to_ddc_pin(struct drm_i915_private *dev_priv,
+			      enum port port)
+{
+	u8 ddc_pin;
+
+	switch (port) {
+	case PORT_B:
+		ddc_pin = GMBUS_PIN_DPB;
+		break;
+	case PORT_C:
+		ddc_pin = GMBUS_PIN_DPC;
+		break;
+	case PORT_D:
+		ddc_pin = GMBUS_PIN_DPD;
+		break;
+	default:
+		MISSING_CASE(port);
+		ddc_pin = GMBUS_PIN_DPB;
+		break;
+	}
+	return ddc_pin;
+}
+
+static u8 intel_hdmi_ddc_pin(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	enum port port = encoder->port;
+	u8 ddc_pin;
+
+	ddc_pin = intel_bios_alternate_ddc_pin(encoder);
+	if (ddc_pin) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Using DDC pin 0x%x for port %c (VBT)\n",
+			    ddc_pin, port_name(port));
+		return ddc_pin;
+	}
+
+	if (IS_ALDERLAKE_S(dev_priv))
+		ddc_pin = adls_port_to_ddc_pin(dev_priv, port);
+	else if (INTEL_PCH_TYPE(dev_priv) >= PCH_DG1)
+		ddc_pin = dg1_port_to_ddc_pin(dev_priv, port);
+	else if (IS_ROCKETLAKE(dev_priv))
+		ddc_pin = rkl_port_to_ddc_pin(dev_priv, port);
+	else if (DISPLAY_VER(dev_priv) == 9 && HAS_PCH_TGP(dev_priv))
+		ddc_pin = gen9bc_tgp_port_to_ddc_pin(dev_priv, port);
+	else if (IS_JSL_EHL(dev_priv) && HAS_PCH_TGP(dev_priv))
+		ddc_pin = mcc_port_to_ddc_pin(dev_priv, port);
+	else if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP)
+		ddc_pin = icl_port_to_ddc_pin(dev_priv, port);
+	else if (HAS_PCH_CNP(dev_priv))
+		ddc_pin = cnp_port_to_ddc_pin(dev_priv, port);
+	else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
+		ddc_pin = bxt_port_to_ddc_pin(dev_priv, port);
+	else if (IS_CHERRYVIEW(dev_priv))
+		ddc_pin = chv_port_to_ddc_pin(dev_priv, port);
+	else
+		ddc_pin = g4x_port_to_ddc_pin(dev_priv, port);
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "Using DDC pin 0x%x for port %c (platform default)\n",
+		    ddc_pin, port_name(port));
+
+	return ddc_pin;
+}
+
+void intel_infoframe_init(struct intel_digital_port *dig_port)
+{
+	struct drm_i915_private *dev_priv =
+		to_i915(dig_port->base.base.dev);
+
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+		dig_port->write_infoframe = vlv_write_infoframe;
+		dig_port->read_infoframe = vlv_read_infoframe;
+		dig_port->set_infoframes = vlv_set_infoframes;
+		dig_port->infoframes_enabled = vlv_infoframes_enabled;
+	} else if (IS_G4X(dev_priv)) {
+		dig_port->write_infoframe = g4x_write_infoframe;
+		dig_port->read_infoframe = g4x_read_infoframe;
+		dig_port->set_infoframes = g4x_set_infoframes;
+		dig_port->infoframes_enabled = g4x_infoframes_enabled;
+	} else if (HAS_DDI(dev_priv)) {
+		if (intel_bios_is_lspcon_present(dev_priv, dig_port->base.port)) {
+			dig_port->write_infoframe = lspcon_write_infoframe;
+			dig_port->read_infoframe = lspcon_read_infoframe;
+			dig_port->set_infoframes = lspcon_set_infoframes;
+			dig_port->infoframes_enabled = lspcon_infoframes_enabled;
+		} else {
+			dig_port->write_infoframe = hsw_write_infoframe;
+			dig_port->read_infoframe = hsw_read_infoframe;
+			dig_port->set_infoframes = hsw_set_infoframes;
+			dig_port->infoframes_enabled = hsw_infoframes_enabled;
+		}
+	} else if (HAS_PCH_IBX(dev_priv)) {
+		dig_port->write_infoframe = ibx_write_infoframe;
+		dig_port->read_infoframe = ibx_read_infoframe;
+		dig_port->set_infoframes = ibx_set_infoframes;
+		dig_port->infoframes_enabled = ibx_infoframes_enabled;
+	} else {
+		dig_port->write_infoframe = cpt_write_infoframe;
+		dig_port->read_infoframe = cpt_read_infoframe;
+		dig_port->set_infoframes = cpt_set_infoframes;
+		dig_port->infoframes_enabled = cpt_infoframes_enabled;
+	}
+}
+
+void intel_hdmi_init_connector(struct intel_digital_port *dig_port,
+			       struct intel_connector *intel_connector)
+{
+	struct drm_connector *connector = &intel_connector->base;
+	struct intel_hdmi *intel_hdmi = &dig_port->hdmi;
+	struct intel_encoder *intel_encoder = &dig_port->base;
+	struct drm_device *dev = intel_encoder->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct i2c_adapter *ddc;
+	enum port port = intel_encoder->port;
+	struct cec_connector_info conn_info;
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "Adding HDMI connector on [ENCODER:%d:%s]\n",
+		    intel_encoder->base.base.id, intel_encoder->base.name);
+
+	if (DISPLAY_VER(dev_priv) < 12 && drm_WARN_ON(dev, port == PORT_A))
+		return;
+
+	if (drm_WARN(dev, dig_port->max_lanes < 4,
+		     "Not enough lanes (%d) for HDMI on [ENCODER:%d:%s]\n",
+		     dig_port->max_lanes, intel_encoder->base.base.id,
+		     intel_encoder->base.name))
+		return;
+
+	intel_hdmi->ddc_bus = intel_hdmi_ddc_pin(intel_encoder);
+	ddc = intel_gmbus_get_adapter(dev_priv, intel_hdmi->ddc_bus);
+
+	drm_connector_init_with_ddc(dev, connector,
+				    &intel_hdmi_connector_funcs,
+				    DRM_MODE_CONNECTOR_HDMIA,
+				    ddc);
+	drm_connector_helper_add(connector, &intel_hdmi_connector_helper_funcs);
+
+	connector->interlace_allowed = 1;
+	connector->doublescan_allowed = 0;
+	connector->stereo_allowed = 1;
+
+	if (DISPLAY_VER(dev_priv) >= 10)
+		connector->ycbcr_420_allowed = true;
+
+	intel_connector->polled = DRM_CONNECTOR_POLL_HPD;
+
+	if (HAS_DDI(dev_priv))
+		intel_connector->get_hw_state = intel_ddi_connector_get_hw_state;
+	else
+		intel_connector->get_hw_state = intel_connector_get_hw_state;
+
+	intel_hdmi_add_properties(intel_hdmi, connector);
+
+	intel_connector_attach_encoder(intel_connector, intel_encoder);
+	intel_hdmi->attached_connector = intel_connector;
+
+	if (is_hdcp_supported(dev_priv, port)) {
+		int ret = intel_hdcp_init(intel_connector, dig_port,
+					  &intel_hdmi_hdcp_shim);
+		if (ret)
+			drm_dbg_kms(&dev_priv->drm,
+				    "HDCP init failed, skipping.\n");
+	}
+
+	/* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written
+	 * 0xd.  Failure to do so will result in spurious interrupts being
+	 * generated on the port when a cable is not attached.
+	 */
+	if (IS_G45(dev_priv)) {
+		u32 temp = intel_de_read(dev_priv, PEG_BAND_GAP_DATA);
+		intel_de_write(dev_priv, PEG_BAND_GAP_DATA,
+		               (temp & ~0xf) | 0xd);
+	}
+
+	cec_fill_conn_info_from_drm(&conn_info, connector);
+
+	intel_hdmi->cec_notifier =
+		cec_notifier_conn_register(dev->dev, port_identifier(port),
+					   &conn_info);
+	if (!intel_hdmi->cec_notifier)
+		drm_dbg_kms(&dev_priv->drm, "CEC notifier get failed\n");
+}
+
+/*
+ * intel_hdmi_dsc_get_slice_height - get the dsc slice_height
+ * @vactive: Vactive of a display mode
+ *
+ * @return: appropriate dsc slice height for a given mode.
+ */
+int intel_hdmi_dsc_get_slice_height(int vactive)
+{
+	int slice_height;
+
+	/*
+	 * Slice Height determination : HDMI2.1 Section 7.7.5.2
+	 * Select smallest slice height >=96, that results in a valid PPS and
+	 * requires minimum padding lines required for final slice.
+	 *
+	 * Assumption : Vactive is even.
+	 */
+	for (slice_height = 96; slice_height <= vactive; slice_height += 2)
+		if (vactive % slice_height == 0)
+			return slice_height;
+
+	return 0;
+}
+
+/*
+ * intel_hdmi_dsc_get_num_slices - get no. of dsc slices based on dsc encoder
+ * and dsc decoder capabilities
+ *
+ * @crtc_state: intel crtc_state
+ * @src_max_slices: maximum slices supported by the DSC encoder
+ * @src_max_slice_width: maximum slice width supported by DSC encoder
+ * @hdmi_max_slices: maximum slices supported by sink DSC decoder
+ * @hdmi_throughput: maximum clock per slice (MHz) supported by HDMI sink
+ *
+ * @return: num of dsc slices that can be supported by the dsc encoder
+ * and decoder.
+ */
+int
+intel_hdmi_dsc_get_num_slices(const struct intel_crtc_state *crtc_state,
+			      int src_max_slices, int src_max_slice_width,
+			      int hdmi_max_slices, int hdmi_throughput)
+{
+/* Pixel rates in KPixels/sec */
+#define HDMI_DSC_PEAK_PIXEL_RATE		2720000
+/*
+ * Rates at which the source and sink are required to process pixels in each
+ * slice, can be two levels: either atleast 340000KHz or atleast 40000KHz.
+ */
+#define HDMI_DSC_MAX_ENC_THROUGHPUT_0		340000
+#define HDMI_DSC_MAX_ENC_THROUGHPUT_1		400000
+
+/* Spec limits the slice width to 2720 pixels */
+#define MAX_HDMI_SLICE_WIDTH			2720
+	int kslice_adjust;
+	int adjusted_clk_khz;
+	int min_slices;
+	int target_slices;
+	int max_throughput; /* max clock freq. in khz per slice */
+	int max_slice_width;
+	int slice_width;
+	int pixel_clock = crtc_state->hw.adjusted_mode.crtc_clock;
+
+	if (!hdmi_throughput)
+		return 0;
+
+	/*
+	 * Slice Width determination : HDMI2.1 Section 7.7.5.1
+	 * kslice_adjust factor for 4:2:0, and 4:2:2 formats is 0.5, where as
+	 * for 4:4:4 is 1.0. Multiplying these factors by 10 and later
+	 * dividing adjusted clock value by 10.
+	 */
+	if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR444 ||
+	    crtc_state->output_format == INTEL_OUTPUT_FORMAT_RGB)
+		kslice_adjust = 10;
+	else
+		kslice_adjust = 5;
+
+	/*
+	 * As per spec, the rate at which the source and the sink process
+	 * the pixels per slice are at two levels: atleast 340Mhz or 400Mhz.
+	 * This depends upon the pixel clock rate and output formats
+	 * (kslice adjust).
+	 * If pixel clock * kslice adjust >= 2720MHz slices can be processed
+	 * at max 340MHz, otherwise they can be processed at max 400MHz.
+	 */
+
+	adjusted_clk_khz = DIV_ROUND_UP(kslice_adjust * pixel_clock, 10);
+
+	if (adjusted_clk_khz <= HDMI_DSC_PEAK_PIXEL_RATE)
+		max_throughput = HDMI_DSC_MAX_ENC_THROUGHPUT_0;
+	else
+		max_throughput = HDMI_DSC_MAX_ENC_THROUGHPUT_1;
+
+	/*
+	 * Taking into account the sink's capability for maximum
+	 * clock per slice (in MHz) as read from HF-VSDB.
+	 */
+	max_throughput = min(max_throughput, hdmi_throughput * 1000);
+
+	min_slices = DIV_ROUND_UP(adjusted_clk_khz, max_throughput);
+	max_slice_width = min(MAX_HDMI_SLICE_WIDTH, src_max_slice_width);
+
+	/*
+	 * Keep on increasing the num of slices/line, starting from min_slices
+	 * per line till we get such a number, for which the slice_width is
+	 * just less than max_slice_width. The slices/line selected should be
+	 * less than or equal to the max horizontal slices that the combination
+	 * of PCON encoder and HDMI decoder can support.
+	 */
+	slice_width = max_slice_width;
+
+	do {
+		if (min_slices <= 1 && src_max_slices >= 1 && hdmi_max_slices >= 1)
+			target_slices = 1;
+		else if (min_slices <= 2 && src_max_slices >= 2 && hdmi_max_slices >= 2)
+			target_slices = 2;
+		else if (min_slices <= 4 && src_max_slices >= 4 && hdmi_max_slices >= 4)
+			target_slices = 4;
+		else if (min_slices <= 8 && src_max_slices >= 8 && hdmi_max_slices >= 8)
+			target_slices = 8;
+		else if (min_slices <= 12 && src_max_slices >= 12 && hdmi_max_slices >= 12)
+			target_slices = 12;
+		else if (min_slices <= 16 && src_max_slices >= 16 && hdmi_max_slices >= 16)
+			target_slices = 16;
+		else
+			return 0;
+
+		slice_width = DIV_ROUND_UP(crtc_state->hw.adjusted_mode.hdisplay, target_slices);
+		if (slice_width >= max_slice_width)
+			min_slices = target_slices + 1;
+	} while (slice_width >= max_slice_width);
+
+	return target_slices;
+}
+
+/*
+ * intel_hdmi_dsc_get_bpp - get the appropriate compressed bits_per_pixel based on
+ * source and sink capabilities.
+ *
+ * @src_fraction_bpp: fractional bpp supported by the source
+ * @slice_width: dsc slice width supported by the source and sink
+ * @num_slices: num of slices supported by the source and sink
+ * @output_format: video output format
+ * @hdmi_all_bpp: sink supports decoding of 1/16th bpp setting
+ * @hdmi_max_chunk_bytes: max bytes in a line of chunks supported by sink
+ *
+ * @return: compressed bits_per_pixel in step of 1/16 of bits_per_pixel
+ */
+int
+intel_hdmi_dsc_get_bpp(int src_fractional_bpp, int slice_width, int num_slices,
+		       int output_format, bool hdmi_all_bpp,
+		       int hdmi_max_chunk_bytes)
+{
+	int max_dsc_bpp, min_dsc_bpp;
+	int target_bytes;
+	bool bpp_found = false;
+	int bpp_decrement_x16;
+	int bpp_target;
+	int bpp_target_x16;
+
+	/*
+	 * Get min bpp and max bpp as per Table 7.23, in HDMI2.1 spec
+	 * Start with the max bpp and keep on decrementing with
+	 * fractional bpp, if supported by PCON DSC encoder
+	 *
+	 * for each bpp we check if no of bytes can be supported by HDMI sink
+	 */
+
+	/* Assuming: bpc as 8*/
+	if (output_format == INTEL_OUTPUT_FORMAT_YCBCR420) {
+		min_dsc_bpp = 6;
+		max_dsc_bpp = 3 * 4; /* 3*bpc/2 */
+	} else if (output_format == INTEL_OUTPUT_FORMAT_YCBCR444 ||
+		   output_format == INTEL_OUTPUT_FORMAT_RGB) {
+		min_dsc_bpp = 8;
+		max_dsc_bpp = 3 * 8; /* 3*bpc */
+	} else {
+		/* Assuming 4:2:2 encoding */
+		min_dsc_bpp = 7;
+		max_dsc_bpp = 2 * 8; /* 2*bpc */
+	}
+
+	/*
+	 * Taking into account if all dsc_all_bpp supported by HDMI2.1 sink
+	 * Section 7.7.34 : Source shall not enable compressed Video
+	 * Transport with bpp_target settings above 12 bpp unless
+	 * DSC_all_bpp is set to 1.
+	 */
+	if (!hdmi_all_bpp)
+		max_dsc_bpp = min(max_dsc_bpp, 12);
+
+	/*
+	 * The Sink has a limit of compressed data in bytes for a scanline,
+	 * as described in max_chunk_bytes field in HFVSDB block of edid.
+	 * The no. of bytes depend on the target bits per pixel that the
+	 * source configures. So we start with the max_bpp and calculate
+	 * the target_chunk_bytes. We keep on decrementing the target_bpp,
+	 * till we get the target_chunk_bytes just less than what the sink's
+	 * max_chunk_bytes, or else till we reach the min_dsc_bpp.
+	 *
+	 * The decrement is according to the fractional support from PCON DSC
+	 * encoder. For fractional BPP we use bpp_target as a multiple of 16.
+	 *
+	 * bpp_target_x16 = bpp_target * 16
+	 * So we need to decrement by {1, 2, 4, 8, 16} for fractional bpps
+	 * {1/16, 1/8, 1/4, 1/2, 1} respectively.
+	 */
+
+	bpp_target = max_dsc_bpp;
+
+	/* src does not support fractional bpp implies decrement by 16 for bppx16 */
+	if (!src_fractional_bpp)
+		src_fractional_bpp = 1;
+	bpp_decrement_x16 = DIV_ROUND_UP(16, src_fractional_bpp);
+	bpp_target_x16 = (bpp_target * 16) - bpp_decrement_x16;
+
+	while (bpp_target_x16 > (min_dsc_bpp * 16)) {
+		int bpp;
+
+		bpp = DIV_ROUND_UP(bpp_target_x16, 16);
+		target_bytes = DIV_ROUND_UP((num_slices * slice_width * bpp), 8);
+		if (target_bytes <= hdmi_max_chunk_bytes) {
+			bpp_found = true;
+			break;
+		}
+		bpp_target_x16 -= bpp_decrement_x16;
+	}
+	if (bpp_found)
+		return bpp_target_x16;
+
+	return 0;
+}
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.h b/drivers/gpu/drm/i915/display/intel_hdmi.h
new file mode 100644
index 000000000..93f65a917
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.h
@@ -0,0 +1,58 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_HDMI_H__
+#define __INTEL_HDMI_H__
+
+#include <linux/hdmi.h>
+#include <linux/types.h>
+
+struct drm_connector;
+struct drm_encoder;
+struct drm_i915_private;
+struct intel_connector;
+struct intel_digital_port;
+struct intel_encoder;
+struct intel_crtc_state;
+struct intel_hdmi;
+struct drm_connector_state;
+union hdmi_infoframe;
+enum port;
+
+void intel_hdmi_init_connector(struct intel_digital_port *dig_port,
+			       struct intel_connector *intel_connector);
+int intel_hdmi_compute_config(struct intel_encoder *encoder,
+			      struct intel_crtc_state *pipe_config,
+			      struct drm_connector_state *conn_state);
+void intel_hdmi_encoder_shutdown(struct intel_encoder *encoder);
+bool intel_hdmi_handle_sink_scrambling(struct intel_encoder *encoder,
+				       struct drm_connector *connector,
+				       bool high_tmds_clock_ratio,
+				       bool scrambling);
+void intel_dp_dual_mode_set_tmds_output(struct intel_hdmi *hdmi, bool enable);
+void intel_infoframe_init(struct intel_digital_port *dig_port);
+u32 intel_hdmi_infoframes_enabled(struct intel_encoder *encoder,
+				  const struct intel_crtc_state *crtc_state);
+u32 intel_hdmi_infoframe_enable(unsigned int type);
+void intel_hdmi_read_gcp_infoframe(struct intel_encoder *encoder,
+				   struct intel_crtc_state *crtc_state);
+void intel_read_infoframe(struct intel_encoder *encoder,
+			  const struct intel_crtc_state *crtc_state,
+			  enum hdmi_infoframe_type type,
+			  union hdmi_infoframe *frame);
+bool intel_hdmi_limited_color_range(const struct intel_crtc_state *crtc_state,
+				    const struct drm_connector_state *conn_state);
+bool intel_hdmi_bpc_possible(const struct intel_crtc_state *crtc_state,
+			     int bpc, bool has_hdmi_sink, bool ycbcr420_output);
+int intel_hdmi_tmds_clock(int clock, int bpc, bool ycbcr420_output);
+int intel_hdmi_dsc_get_bpp(int src_fractional_bpp, int slice_width,
+			   int num_slices, int output_format, bool hdmi_all_bpp,
+			   int hdmi_max_chunk_bytes);
+int intel_hdmi_dsc_get_num_slices(const struct intel_crtc_state *crtc_state,
+				  int src_max_slices, int src_max_slice_width,
+				  int hdmi_max_slices, int hdmi_throughput);
+int intel_hdmi_dsc_get_slice_height(int vactive);
+
+#endif /* __INTEL_HDMI_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_hotplug.c b/drivers/gpu/drm/i915/display/intel_hotplug.c
new file mode 100644
index 000000000..f7a2f485b
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_hotplug.c
@@ -0,0 +1,769 @@
+/*
+ * Copyright © 2015 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include <linux/kernel.h>
+
+#include "i915_drv.h"
+#include "i915_irq.h"
+#include "intel_display_types.h"
+#include "intel_hotplug.h"
+
+/**
+ * DOC: Hotplug
+ *
+ * Simply put, hotplug occurs when a display is connected to or disconnected
+ * from the system. However, there may be adapters and docking stations and
+ * Display Port short pulses and MST devices involved, complicating matters.
+ *
+ * Hotplug in i915 is handled in many different levels of abstraction.
+ *
+ * The platform dependent interrupt handling code in i915_irq.c enables,
+ * disables, and does preliminary handling of the interrupts. The interrupt
+ * handlers gather the hotplug detect (HPD) information from relevant registers
+ * into a platform independent mask of hotplug pins that have fired.
+ *
+ * The platform independent interrupt handler intel_hpd_irq_handler() in
+ * intel_hotplug.c does hotplug irq storm detection and mitigation, and passes
+ * further processing to appropriate bottom halves (Display Port specific and
+ * regular hotplug).
+ *
+ * The Display Port work function i915_digport_work_func() calls into
+ * intel_dp_hpd_pulse() via hooks, which handles DP short pulses and DP MST long
+ * pulses, with failures and non-MST long pulses triggering regular hotplug
+ * processing on the connector.
+ *
+ * The regular hotplug work function i915_hotplug_work_func() calls connector
+ * detect hooks, and, if connector status changes, triggers sending of hotplug
+ * uevent to userspace via drm_kms_helper_hotplug_event().
+ *
+ * Finally, the userspace is responsible for triggering a modeset upon receiving
+ * the hotplug uevent, disabling or enabling the crtc as needed.
+ *
+ * The hotplug interrupt storm detection and mitigation code keeps track of the
+ * number of interrupts per hotplug pin per a period of time, and if the number
+ * of interrupts exceeds a certain threshold, the interrupt is disabled for a
+ * while before being re-enabled. The intention is to mitigate issues raising
+ * from broken hardware triggering massive amounts of interrupts and grinding
+ * the system to a halt.
+ *
+ * Current implementation expects that hotplug interrupt storm will not be
+ * seen when display port sink is connected, hence on platforms whose DP
+ * callback is handled by i915_digport_work_func reenabling of hpd is not
+ * performed (it was never expected to be disabled in the first place ;) )
+ * this is specific to DP sinks handled by this routine and any other display
+ * such as HDMI or DVI enabled on the same port will have proper logic since
+ * it will use i915_hotplug_work_func where this logic is handled.
+ */
+
+/**
+ * intel_hpd_pin_default - return default pin associated with certain port.
+ * @dev_priv: private driver data pointer
+ * @port: the hpd port to get associated pin
+ *
+ * It is only valid and used by digital port encoder.
+ *
+ * Return pin that is associatade with @port.
+ */
+enum hpd_pin intel_hpd_pin_default(struct drm_i915_private *dev_priv,
+				   enum port port)
+{
+	return HPD_PORT_A + port - PORT_A;
+}
+
+#define HPD_STORM_DETECT_PERIOD		1000
+#define HPD_STORM_REENABLE_DELAY	(2 * 60 * 1000)
+#define HPD_RETRY_DELAY			1000
+
+static enum hpd_pin
+intel_connector_hpd_pin(struct intel_connector *connector)
+{
+	struct intel_encoder *encoder = intel_attached_encoder(connector);
+
+	/*
+	 * MST connectors get their encoder attached dynamically
+	 * so need to make sure we have an encoder here. But since
+	 * MST encoders have their hpd_pin set to HPD_NONE we don't
+	 * have to special case them beyond that.
+	 */
+	return encoder ? encoder->hpd_pin : HPD_NONE;
+}
+
+/**
+ * intel_hpd_irq_storm_detect - gather stats and detect HPD IRQ storm on a pin
+ * @dev_priv: private driver data pointer
+ * @pin: the pin to gather stats on
+ * @long_hpd: whether the HPD IRQ was long or short
+ *
+ * Gather stats about HPD IRQs from the specified @pin, and detect IRQ
+ * storms. Only the pin specific stats and state are changed, the caller is
+ * responsible for further action.
+ *
+ * The number of IRQs that are allowed within @HPD_STORM_DETECT_PERIOD is
+ * stored in @dev_priv->display.hotplug.hpd_storm_threshold which defaults to
+ * @HPD_STORM_DEFAULT_THRESHOLD. Long IRQs count as +10 to this threshold, and
+ * short IRQs count as +1. If this threshold is exceeded, it's considered an
+ * IRQ storm and the IRQ state is set to @HPD_MARK_DISABLED.
+ *
+ * By default, most systems will only count long IRQs towards
+ * &dev_priv->display.hotplug.hpd_storm_threshold. However, some older systems also
+ * suffer from short IRQ storms and must also track these. Because short IRQ
+ * storms are naturally caused by sideband interactions with DP MST devices,
+ * short IRQ detection is only enabled for systems without DP MST support.
+ * Systems which are new enough to support DP MST are far less likely to
+ * suffer from IRQ storms at all, so this is fine.
+ *
+ * The HPD threshold can be controlled through i915_hpd_storm_ctl in debugfs,
+ * and should only be adjusted for automated hotplug testing.
+ *
+ * Return true if an IRQ storm was detected on @pin.
+ */
+static bool intel_hpd_irq_storm_detect(struct drm_i915_private *dev_priv,
+				       enum hpd_pin pin, bool long_hpd)
+{
+	struct intel_hotplug *hpd = &dev_priv->display.hotplug;
+	unsigned long start = hpd->stats[pin].last_jiffies;
+	unsigned long end = start + msecs_to_jiffies(HPD_STORM_DETECT_PERIOD);
+	const int increment = long_hpd ? 10 : 1;
+	const int threshold = hpd->hpd_storm_threshold;
+	bool storm = false;
+
+	if (!threshold ||
+	    (!long_hpd && !dev_priv->display.hotplug.hpd_short_storm_enabled))
+		return false;
+
+	if (!time_in_range(jiffies, start, end)) {
+		hpd->stats[pin].last_jiffies = jiffies;
+		hpd->stats[pin].count = 0;
+	}
+
+	hpd->stats[pin].count += increment;
+	if (hpd->stats[pin].count > threshold) {
+		hpd->stats[pin].state = HPD_MARK_DISABLED;
+		drm_dbg_kms(&dev_priv->drm,
+			    "HPD interrupt storm detected on PIN %d\n", pin);
+		storm = true;
+	} else {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Received HPD interrupt on PIN %d - cnt: %d\n",
+			      pin,
+			      hpd->stats[pin].count);
+	}
+
+	return storm;
+}
+
+static void
+intel_hpd_irq_storm_switch_to_polling(struct drm_i915_private *dev_priv)
+{
+	struct drm_device *dev = &dev_priv->drm;
+	struct drm_connector_list_iter conn_iter;
+	struct intel_connector *connector;
+	bool hpd_disabled = false;
+
+	lockdep_assert_held(&dev_priv->irq_lock);
+
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	for_each_intel_connector_iter(connector, &conn_iter) {
+		enum hpd_pin pin;
+
+		if (connector->base.polled != DRM_CONNECTOR_POLL_HPD)
+			continue;
+
+		pin = intel_connector_hpd_pin(connector);
+		if (pin == HPD_NONE ||
+		    dev_priv->display.hotplug.stats[pin].state != HPD_MARK_DISABLED)
+			continue;
+
+		drm_info(&dev_priv->drm,
+			 "HPD interrupt storm detected on connector %s: "
+			 "switching from hotplug detection to polling\n",
+			 connector->base.name);
+
+		dev_priv->display.hotplug.stats[pin].state = HPD_DISABLED;
+		connector->base.polled = DRM_CONNECTOR_POLL_CONNECT |
+			DRM_CONNECTOR_POLL_DISCONNECT;
+		hpd_disabled = true;
+	}
+	drm_connector_list_iter_end(&conn_iter);
+
+	/* Enable polling and queue hotplug re-enabling. */
+	if (hpd_disabled) {
+		drm_kms_helper_poll_enable(dev);
+		mod_delayed_work(system_wq, &dev_priv->display.hotplug.reenable_work,
+				 msecs_to_jiffies(HPD_STORM_REENABLE_DELAY));
+	}
+}
+
+static void intel_hpd_irq_storm_reenable_work(struct work_struct *work)
+{
+	struct drm_i915_private *dev_priv =
+		container_of(work, typeof(*dev_priv),
+			     display.hotplug.reenable_work.work);
+	struct drm_device *dev = &dev_priv->drm;
+	struct drm_connector_list_iter conn_iter;
+	struct intel_connector *connector;
+	intel_wakeref_t wakeref;
+	enum hpd_pin pin;
+
+	wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
+
+	spin_lock_irq(&dev_priv->irq_lock);
+
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	for_each_intel_connector_iter(connector, &conn_iter) {
+		pin = intel_connector_hpd_pin(connector);
+		if (pin == HPD_NONE ||
+		    dev_priv->display.hotplug.stats[pin].state != HPD_DISABLED)
+			continue;
+
+		if (connector->base.polled != connector->polled)
+			drm_dbg(&dev_priv->drm,
+				"Reenabling HPD on connector %s\n",
+				connector->base.name);
+		connector->base.polled = connector->polled;
+	}
+	drm_connector_list_iter_end(&conn_iter);
+
+	for_each_hpd_pin(pin) {
+		if (dev_priv->display.hotplug.stats[pin].state == HPD_DISABLED)
+			dev_priv->display.hotplug.stats[pin].state = HPD_ENABLED;
+	}
+
+	intel_hpd_irq_setup(dev_priv);
+
+	spin_unlock_irq(&dev_priv->irq_lock);
+
+	intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
+}
+
+enum intel_hotplug_state
+intel_encoder_hotplug(struct intel_encoder *encoder,
+		      struct intel_connector *connector)
+{
+	struct drm_device *dev = connector->base.dev;
+	enum drm_connector_status old_status;
+	u64 old_epoch_counter;
+	bool ret = false;
+
+	drm_WARN_ON(dev, !mutex_is_locked(&dev->mode_config.mutex));
+	old_status = connector->base.status;
+	old_epoch_counter = connector->base.epoch_counter;
+
+	connector->base.status =
+		drm_helper_probe_detect(&connector->base, NULL, false);
+
+	if (old_epoch_counter != connector->base.epoch_counter)
+		ret = true;
+
+	if (ret) {
+		drm_dbg_kms(dev, "[CONNECTOR:%d:%s] status updated from %s to %s (epoch counter %llu->%llu)\n",
+			    connector->base.base.id,
+			    connector->base.name,
+			    drm_get_connector_status_name(old_status),
+			    drm_get_connector_status_name(connector->base.status),
+			    old_epoch_counter,
+			    connector->base.epoch_counter);
+		return INTEL_HOTPLUG_CHANGED;
+	}
+	return INTEL_HOTPLUG_UNCHANGED;
+}
+
+static bool intel_encoder_has_hpd_pulse(struct intel_encoder *encoder)
+{
+	return intel_encoder_is_dig_port(encoder) &&
+		enc_to_dig_port(encoder)->hpd_pulse != NULL;
+}
+
+static void i915_digport_work_func(struct work_struct *work)
+{
+	struct drm_i915_private *dev_priv =
+		container_of(work, struct drm_i915_private, display.hotplug.dig_port_work);
+	u32 long_port_mask, short_port_mask;
+	struct intel_encoder *encoder;
+	u32 old_bits = 0;
+
+	spin_lock_irq(&dev_priv->irq_lock);
+	long_port_mask = dev_priv->display.hotplug.long_port_mask;
+	dev_priv->display.hotplug.long_port_mask = 0;
+	short_port_mask = dev_priv->display.hotplug.short_port_mask;
+	dev_priv->display.hotplug.short_port_mask = 0;
+	spin_unlock_irq(&dev_priv->irq_lock);
+
+	for_each_intel_encoder(&dev_priv->drm, encoder) {
+		struct intel_digital_port *dig_port;
+		enum port port = encoder->port;
+		bool long_hpd, short_hpd;
+		enum irqreturn ret;
+
+		if (!intel_encoder_has_hpd_pulse(encoder))
+			continue;
+
+		long_hpd = long_port_mask & BIT(port);
+		short_hpd = short_port_mask & BIT(port);
+
+		if (!long_hpd && !short_hpd)
+			continue;
+
+		dig_port = enc_to_dig_port(encoder);
+
+		ret = dig_port->hpd_pulse(dig_port, long_hpd);
+		if (ret == IRQ_NONE) {
+			/* fall back to old school hpd */
+			old_bits |= BIT(encoder->hpd_pin);
+		}
+	}
+
+	if (old_bits) {
+		spin_lock_irq(&dev_priv->irq_lock);
+		dev_priv->display.hotplug.event_bits |= old_bits;
+		spin_unlock_irq(&dev_priv->irq_lock);
+		queue_delayed_work(system_wq, &dev_priv->display.hotplug.hotplug_work, 0);
+	}
+}
+
+/**
+ * intel_hpd_trigger_irq - trigger an hpd irq event for a port
+ * @dig_port: digital port
+ *
+ * Trigger an HPD interrupt event for the given port, emulating a short pulse
+ * generated by the sink, and schedule the dig port work to handle it.
+ */
+void intel_hpd_trigger_irq(struct intel_digital_port *dig_port)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+
+	spin_lock_irq(&i915->irq_lock);
+	i915->display.hotplug.short_port_mask |= BIT(dig_port->base.port);
+	spin_unlock_irq(&i915->irq_lock);
+
+	queue_work(i915->display.hotplug.dp_wq, &i915->display.hotplug.dig_port_work);
+}
+
+/*
+ * Handle hotplug events outside the interrupt handler proper.
+ */
+static void i915_hotplug_work_func(struct work_struct *work)
+{
+	struct drm_i915_private *dev_priv =
+		container_of(work, struct drm_i915_private,
+			     display.hotplug.hotplug_work.work);
+	struct drm_device *dev = &dev_priv->drm;
+	struct drm_connector_list_iter conn_iter;
+	struct intel_connector *connector;
+	u32 changed = 0, retry = 0;
+	u32 hpd_event_bits;
+	u32 hpd_retry_bits;
+
+	mutex_lock(&dev->mode_config.mutex);
+	drm_dbg_kms(&dev_priv->drm, "running encoder hotplug functions\n");
+
+	spin_lock_irq(&dev_priv->irq_lock);
+
+	hpd_event_bits = dev_priv->display.hotplug.event_bits;
+	dev_priv->display.hotplug.event_bits = 0;
+	hpd_retry_bits = dev_priv->display.hotplug.retry_bits;
+	dev_priv->display.hotplug.retry_bits = 0;
+
+	/* Enable polling for connectors which had HPD IRQ storms */
+	intel_hpd_irq_storm_switch_to_polling(dev_priv);
+
+	spin_unlock_irq(&dev_priv->irq_lock);
+
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	for_each_intel_connector_iter(connector, &conn_iter) {
+		enum hpd_pin pin;
+		u32 hpd_bit;
+
+		pin = intel_connector_hpd_pin(connector);
+		if (pin == HPD_NONE)
+			continue;
+
+		hpd_bit = BIT(pin);
+		if ((hpd_event_bits | hpd_retry_bits) & hpd_bit) {
+			struct intel_encoder *encoder =
+				intel_attached_encoder(connector);
+
+			if (hpd_event_bits & hpd_bit)
+				connector->hotplug_retries = 0;
+			else
+				connector->hotplug_retries++;
+
+			drm_dbg_kms(&dev_priv->drm,
+				    "Connector %s (pin %i) received hotplug event. (retry %d)\n",
+				    connector->base.name, pin,
+				    connector->hotplug_retries);
+
+			switch (encoder->hotplug(encoder, connector)) {
+			case INTEL_HOTPLUG_UNCHANGED:
+				break;
+			case INTEL_HOTPLUG_CHANGED:
+				changed |= hpd_bit;
+				break;
+			case INTEL_HOTPLUG_RETRY:
+				retry |= hpd_bit;
+				break;
+			}
+		}
+	}
+	drm_connector_list_iter_end(&conn_iter);
+	mutex_unlock(&dev->mode_config.mutex);
+
+	if (changed)
+		drm_kms_helper_hotplug_event(dev);
+
+	/* Remove shared HPD pins that have changed */
+	retry &= ~changed;
+	if (retry) {
+		spin_lock_irq(&dev_priv->irq_lock);
+		dev_priv->display.hotplug.retry_bits |= retry;
+		spin_unlock_irq(&dev_priv->irq_lock);
+
+		mod_delayed_work(system_wq, &dev_priv->display.hotplug.hotplug_work,
+				 msecs_to_jiffies(HPD_RETRY_DELAY));
+	}
+}
+
+
+/**
+ * intel_hpd_irq_handler - main hotplug irq handler
+ * @dev_priv: drm_i915_private
+ * @pin_mask: a mask of hpd pins that have triggered the irq
+ * @long_mask: a mask of hpd pins that may be long hpd pulses
+ *
+ * This is the main hotplug irq handler for all platforms. The platform specific
+ * irq handlers call the platform specific hotplug irq handlers, which read and
+ * decode the appropriate registers into bitmasks about hpd pins that have
+ * triggered (@pin_mask), and which of those pins may be long pulses
+ * (@long_mask). The @long_mask is ignored if the port corresponding to the pin
+ * is not a digital port.
+ *
+ * Here, we do hotplug irq storm detection and mitigation, and pass further
+ * processing to appropriate bottom halves.
+ */
+void intel_hpd_irq_handler(struct drm_i915_private *dev_priv,
+			   u32 pin_mask, u32 long_mask)
+{
+	struct intel_encoder *encoder;
+	bool storm_detected = false;
+	bool queue_dig = false, queue_hp = false;
+	u32 long_hpd_pulse_mask = 0;
+	u32 short_hpd_pulse_mask = 0;
+	enum hpd_pin pin;
+
+	if (!pin_mask)
+		return;
+
+	spin_lock(&dev_priv->irq_lock);
+
+	/*
+	 * Determine whether ->hpd_pulse() exists for each pin, and
+	 * whether we have a short or a long pulse. This is needed
+	 * as each pin may have up to two encoders (HDMI and DP) and
+	 * only the one of them (DP) will have ->hpd_pulse().
+	 */
+	for_each_intel_encoder(&dev_priv->drm, encoder) {
+		enum port port = encoder->port;
+		bool long_hpd;
+
+		pin = encoder->hpd_pin;
+		if (!(BIT(pin) & pin_mask))
+			continue;
+
+		if (!intel_encoder_has_hpd_pulse(encoder))
+			continue;
+
+		long_hpd = long_mask & BIT(pin);
+
+		drm_dbg(&dev_priv->drm,
+			"digital hpd on [ENCODER:%d:%s] - %s\n",
+			encoder->base.base.id, encoder->base.name,
+			long_hpd ? "long" : "short");
+		queue_dig = true;
+
+		if (long_hpd) {
+			long_hpd_pulse_mask |= BIT(pin);
+			dev_priv->display.hotplug.long_port_mask |= BIT(port);
+		} else {
+			short_hpd_pulse_mask |= BIT(pin);
+			dev_priv->display.hotplug.short_port_mask |= BIT(port);
+		}
+	}
+
+	/* Now process each pin just once */
+	for_each_hpd_pin(pin) {
+		bool long_hpd;
+
+		if (!(BIT(pin) & pin_mask))
+			continue;
+
+		if (dev_priv->display.hotplug.stats[pin].state == HPD_DISABLED) {
+			/*
+			 * On GMCH platforms the interrupt mask bits only
+			 * prevent irq generation, not the setting of the
+			 * hotplug bits itself. So only WARN about unexpected
+			 * interrupts on saner platforms.
+			 */
+			drm_WARN_ONCE(&dev_priv->drm, !HAS_GMCH(dev_priv),
+				      "Received HPD interrupt on pin %d although disabled\n",
+				      pin);
+			continue;
+		}
+
+		if (dev_priv->display.hotplug.stats[pin].state != HPD_ENABLED)
+			continue;
+
+		/*
+		 * Delegate to ->hpd_pulse() if one of the encoders for this
+		 * pin has it, otherwise let the hotplug_work deal with this
+		 * pin directly.
+		 */
+		if (((short_hpd_pulse_mask | long_hpd_pulse_mask) & BIT(pin))) {
+			long_hpd = long_hpd_pulse_mask & BIT(pin);
+		} else {
+			dev_priv->display.hotplug.event_bits |= BIT(pin);
+			long_hpd = true;
+			queue_hp = true;
+		}
+
+		if (intel_hpd_irq_storm_detect(dev_priv, pin, long_hpd)) {
+			dev_priv->display.hotplug.event_bits &= ~BIT(pin);
+			storm_detected = true;
+			queue_hp = true;
+		}
+	}
+
+	/*
+	 * Disable any IRQs that storms were detected on. Polling enablement
+	 * happens later in our hotplug work.
+	 */
+	if (storm_detected)
+		intel_hpd_irq_setup(dev_priv);
+	spin_unlock(&dev_priv->irq_lock);
+
+	/*
+	 * Our hotplug handler can grab modeset locks (by calling down into the
+	 * fb helpers). Hence it must not be run on our own dev-priv->wq work
+	 * queue for otherwise the flush_work in the pageflip code will
+	 * deadlock.
+	 */
+	if (queue_dig)
+		queue_work(dev_priv->display.hotplug.dp_wq, &dev_priv->display.hotplug.dig_port_work);
+	if (queue_hp)
+		queue_delayed_work(system_wq, &dev_priv->display.hotplug.hotplug_work, 0);
+}
+
+/**
+ * intel_hpd_init - initializes and enables hpd support
+ * @dev_priv: i915 device instance
+ *
+ * This function enables the hotplug support. It requires that interrupts have
+ * already been enabled with intel_irq_init_hw(). From this point on hotplug and
+ * poll request can run concurrently to other code, so locking rules must be
+ * obeyed.
+ *
+ * This is a separate step from interrupt enabling to simplify the locking rules
+ * in the driver load and resume code.
+ *
+ * Also see: intel_hpd_poll_enable() and intel_hpd_poll_disable().
+ */
+void intel_hpd_init(struct drm_i915_private *dev_priv)
+{
+	int i;
+
+	if (!HAS_DISPLAY(dev_priv))
+		return;
+
+	for_each_hpd_pin(i) {
+		dev_priv->display.hotplug.stats[i].count = 0;
+		dev_priv->display.hotplug.stats[i].state = HPD_ENABLED;
+	}
+
+	/*
+	 * Interrupt setup is already guaranteed to be single-threaded, this is
+	 * just to make the assert_spin_locked checks happy.
+	 */
+	spin_lock_irq(&dev_priv->irq_lock);
+	intel_hpd_irq_setup(dev_priv);
+	spin_unlock_irq(&dev_priv->irq_lock);
+}
+
+static void i915_hpd_poll_init_work(struct work_struct *work)
+{
+	struct drm_i915_private *dev_priv =
+		container_of(work, struct drm_i915_private,
+			     display.hotplug.poll_init_work);
+	struct drm_device *dev = &dev_priv->drm;
+	struct drm_connector_list_iter conn_iter;
+	struct intel_connector *connector;
+	bool enabled;
+
+	mutex_lock(&dev->mode_config.mutex);
+
+	enabled = READ_ONCE(dev_priv->display.hotplug.poll_enabled);
+
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	for_each_intel_connector_iter(connector, &conn_iter) {
+		enum hpd_pin pin;
+
+		pin = intel_connector_hpd_pin(connector);
+		if (pin == HPD_NONE)
+			continue;
+
+		connector->base.polled = connector->polled;
+
+		if (enabled && connector->base.polled == DRM_CONNECTOR_POLL_HPD)
+			connector->base.polled = DRM_CONNECTOR_POLL_CONNECT |
+				DRM_CONNECTOR_POLL_DISCONNECT;
+	}
+	drm_connector_list_iter_end(&conn_iter);
+
+	if (enabled)
+		drm_kms_helper_poll_enable(dev);
+
+	mutex_unlock(&dev->mode_config.mutex);
+
+	/*
+	 * We might have missed any hotplugs that happened while we were
+	 * in the middle of disabling polling
+	 */
+	if (!enabled)
+		drm_helper_hpd_irq_event(dev);
+}
+
+/**
+ * intel_hpd_poll_enable - enable polling for connectors with hpd
+ * @dev_priv: i915 device instance
+ *
+ * This function enables polling for all connectors which support HPD.
+ * Under certain conditions HPD may not be functional. On most Intel GPUs,
+ * this happens when we enter runtime suspend.
+ * On Valleyview and Cherryview systems, this also happens when we shut off all
+ * of the powerwells.
+ *
+ * Since this function can get called in contexts where we're already holding
+ * dev->mode_config.mutex, we do the actual hotplug enabling in a seperate
+ * worker.
+ *
+ * Also see: intel_hpd_init() and intel_hpd_poll_disable().
+ */
+void intel_hpd_poll_enable(struct drm_i915_private *dev_priv)
+{
+	if (!HAS_DISPLAY(dev_priv) ||
+	    !INTEL_DISPLAY_ENABLED(dev_priv))
+		return;
+
+	WRITE_ONCE(dev_priv->display.hotplug.poll_enabled, true);
+
+	/*
+	 * We might already be holding dev->mode_config.mutex, so do this in a
+	 * seperate worker
+	 * As well, there's no issue if we race here since we always reschedule
+	 * this worker anyway
+	 */
+	schedule_work(&dev_priv->display.hotplug.poll_init_work);
+}
+
+/**
+ * intel_hpd_poll_disable - disable polling for connectors with hpd
+ * @dev_priv: i915 device instance
+ *
+ * This function disables polling for all connectors which support HPD.
+ * Under certain conditions HPD may not be functional. On most Intel GPUs,
+ * this happens when we enter runtime suspend.
+ * On Valleyview and Cherryview systems, this also happens when we shut off all
+ * of the powerwells.
+ *
+ * Since this function can get called in contexts where we're already holding
+ * dev->mode_config.mutex, we do the actual hotplug enabling in a seperate
+ * worker.
+ *
+ * Also used during driver init to initialize connector->polled
+ * appropriately for all connectors.
+ *
+ * Also see: intel_hpd_init() and intel_hpd_poll_enable().
+ */
+void intel_hpd_poll_disable(struct drm_i915_private *dev_priv)
+{
+	if (!HAS_DISPLAY(dev_priv))
+		return;
+
+	WRITE_ONCE(dev_priv->display.hotplug.poll_enabled, false);
+	schedule_work(&dev_priv->display.hotplug.poll_init_work);
+}
+
+void intel_hpd_init_work(struct drm_i915_private *dev_priv)
+{
+	INIT_DELAYED_WORK(&dev_priv->display.hotplug.hotplug_work,
+			  i915_hotplug_work_func);
+	INIT_WORK(&dev_priv->display.hotplug.dig_port_work, i915_digport_work_func);
+	INIT_WORK(&dev_priv->display.hotplug.poll_init_work, i915_hpd_poll_init_work);
+	INIT_DELAYED_WORK(&dev_priv->display.hotplug.reenable_work,
+			  intel_hpd_irq_storm_reenable_work);
+}
+
+void intel_hpd_cancel_work(struct drm_i915_private *dev_priv)
+{
+	if (!HAS_DISPLAY(dev_priv))
+		return;
+
+	spin_lock_irq(&dev_priv->irq_lock);
+
+	dev_priv->display.hotplug.long_port_mask = 0;
+	dev_priv->display.hotplug.short_port_mask = 0;
+	dev_priv->display.hotplug.event_bits = 0;
+	dev_priv->display.hotplug.retry_bits = 0;
+
+	spin_unlock_irq(&dev_priv->irq_lock);
+
+	cancel_work_sync(&dev_priv->display.hotplug.dig_port_work);
+	cancel_delayed_work_sync(&dev_priv->display.hotplug.hotplug_work);
+	cancel_work_sync(&dev_priv->display.hotplug.poll_init_work);
+	cancel_delayed_work_sync(&dev_priv->display.hotplug.reenable_work);
+}
+
+bool intel_hpd_disable(struct drm_i915_private *dev_priv, enum hpd_pin pin)
+{
+	bool ret = false;
+
+	if (pin == HPD_NONE)
+		return false;
+
+	spin_lock_irq(&dev_priv->irq_lock);
+	if (dev_priv->display.hotplug.stats[pin].state == HPD_ENABLED) {
+		dev_priv->display.hotplug.stats[pin].state = HPD_DISABLED;
+		ret = true;
+	}
+	spin_unlock_irq(&dev_priv->irq_lock);
+
+	return ret;
+}
+
+void intel_hpd_enable(struct drm_i915_private *dev_priv, enum hpd_pin pin)
+{
+	if (pin == HPD_NONE)
+		return;
+
+	spin_lock_irq(&dev_priv->irq_lock);
+	dev_priv->display.hotplug.stats[pin].state = HPD_ENABLED;
+	spin_unlock_irq(&dev_priv->irq_lock);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_hotplug.h b/drivers/gpu/drm/i915/display/intel_hotplug.h
new file mode 100644
index 000000000..b87e95d60
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_hotplug.h
@@ -0,0 +1,32 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_HOTPLUG_H__
+#define __INTEL_HOTPLUG_H__
+
+#include <linux/types.h>
+
+struct drm_i915_private;
+struct intel_connector;
+struct intel_digital_port;
+struct intel_encoder;
+enum port;
+
+void intel_hpd_poll_enable(struct drm_i915_private *dev_priv);
+void intel_hpd_poll_disable(struct drm_i915_private *dev_priv);
+enum intel_hotplug_state intel_encoder_hotplug(struct intel_encoder *encoder,
+					       struct intel_connector *connector);
+void intel_hpd_irq_handler(struct drm_i915_private *dev_priv,
+			   u32 pin_mask, u32 long_mask);
+void intel_hpd_trigger_irq(struct intel_digital_port *dig_port);
+void intel_hpd_init(struct drm_i915_private *dev_priv);
+void intel_hpd_init_work(struct drm_i915_private *dev_priv);
+void intel_hpd_cancel_work(struct drm_i915_private *dev_priv);
+enum hpd_pin intel_hpd_pin_default(struct drm_i915_private *dev_priv,
+				   enum port port);
+bool intel_hpd_disable(struct drm_i915_private *dev_priv, enum hpd_pin pin);
+void intel_hpd_enable(struct drm_i915_private *dev_priv, enum hpd_pin pin);
+
+#endif /* __INTEL_HOTPLUG_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_lpe_audio.c b/drivers/gpu/drm/i915/display/intel_lpe_audio.c
new file mode 100644
index 000000000..dca6003cc
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_lpe_audio.c
@@ -0,0 +1,368 @@
+/*
+ * Copyright © 2016 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
+ *    Jerome Anand <jerome.anand@intel.com>
+ *    based on VED patches
+ *
+ */
+
+/**
+ * DOC: LPE Audio integration for HDMI or DP playback
+ *
+ * Motivation:
+ * Atom platforms (e.g. valleyview and cherryTrail) integrates a DMA-based
+ * interface as an alternative to the traditional HDaudio path. While this
+ * mode is unrelated to the LPE aka SST audio engine, the documentation refers
+ * to this mode as LPE so we keep this notation for the sake of consistency.
+ *
+ * The interface is handled by a separate standalone driver maintained in the
+ * ALSA subsystem for simplicity. To minimize the interaction between the two
+ * subsystems, a bridge is setup between the hdmi-lpe-audio and i915:
+ * 1. Create a platform device to share MMIO/IRQ resources
+ * 2. Make the platform device child of i915 device for runtime PM.
+ * 3. Create IRQ chip to forward the LPE audio irqs.
+ * the hdmi-lpe-audio driver probes the lpe audio device and creates a new
+ * sound card
+ *
+ * Threats:
+ * Due to the restriction in Linux platform device model, user need manually
+ * uninstall the hdmi-lpe-audio driver before uninstalling i915 module,
+ * otherwise we might run into use-after-free issues after i915 removes the
+ * platform device: even though hdmi-lpe-audio driver is released, the modules
+ * is still in "installed" status.
+ *
+ * Implementation:
+ * The MMIO/REG platform resources are created according to the registers
+ * specification.
+ * When forwarding LPE audio irqs, the flow control handler selection depends
+ * on the platform, for example on valleyview handle_simple_irq is enough.
+ *
+ */
+
+#include <linux/acpi.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/irq.h>
+#include <linux/pci.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+
+#include <drm/intel_lpe_audio.h>
+
+#include "i915_drv.h"
+#include "intel_de.h"
+#include "intel_lpe_audio.h"
+#include "intel_pci_config.h"
+
+#define HAS_LPE_AUDIO(dev_priv) ((dev_priv)->display.audio.lpe.platdev != NULL)
+
+static struct platform_device *
+lpe_audio_platdev_create(struct drm_i915_private *dev_priv)
+{
+	struct drm_device *dev = &dev_priv->drm;
+	struct pci_dev *pdev = to_pci_dev(dev->dev);
+	struct platform_device_info pinfo = {};
+	struct resource *rsc;
+	struct platform_device *platdev;
+	struct intel_hdmi_lpe_audio_pdata *pdata;
+
+	pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
+	if (!pdata)
+		return ERR_PTR(-ENOMEM);
+
+	rsc = kcalloc(2, sizeof(*rsc), GFP_KERNEL);
+	if (!rsc) {
+		kfree(pdata);
+		return ERR_PTR(-ENOMEM);
+	}
+
+	rsc[0].start    = rsc[0].end = dev_priv->display.audio.lpe.irq;
+	rsc[0].flags    = IORESOURCE_IRQ;
+	rsc[0].name     = "hdmi-lpe-audio-irq";
+
+	rsc[1].start    = pci_resource_start(pdev, GTTMMADR_BAR) +
+		I915_HDMI_LPE_AUDIO_BASE;
+	rsc[1].end      = pci_resource_start(pdev, GTTMMADR_BAR) +
+		I915_HDMI_LPE_AUDIO_BASE + I915_HDMI_LPE_AUDIO_SIZE - 1;
+	rsc[1].flags    = IORESOURCE_MEM;
+	rsc[1].name     = "hdmi-lpe-audio-mmio";
+
+	pinfo.parent = dev->dev;
+	pinfo.name = "hdmi-lpe-audio";
+	pinfo.id = -1;
+	pinfo.res = rsc;
+	pinfo.num_res = 2;
+	pinfo.data = pdata;
+	pinfo.size_data = sizeof(*pdata);
+	pinfo.dma_mask = DMA_BIT_MASK(32);
+
+	pdata->num_pipes = INTEL_NUM_PIPES(dev_priv);
+	pdata->num_ports = IS_CHERRYVIEW(dev_priv) ? 3 : 2; /* B,C,D or B,C */
+	pdata->port[0].pipe = -1;
+	pdata->port[1].pipe = -1;
+	pdata->port[2].pipe = -1;
+	spin_lock_init(&pdata->lpe_audio_slock);
+
+	platdev = platform_device_register_full(&pinfo);
+	kfree(rsc);
+	kfree(pdata);
+
+	if (IS_ERR(platdev)) {
+		drm_err(&dev_priv->drm,
+			"Failed to allocate LPE audio platform device\n");
+		return platdev;
+	}
+
+	pm_runtime_no_callbacks(&platdev->dev);
+
+	return platdev;
+}
+
+static void lpe_audio_platdev_destroy(struct drm_i915_private *dev_priv)
+{
+	/* XXX Note that platform_device_register_full() allocates a dma_mask
+	 * and never frees it. We can't free it here as we cannot guarantee
+	 * this is the last reference (i.e. that the dma_mask will not be
+	 * used after our unregister). So ee choose to leak the sizeof(u64)
+	 * allocation here - it should be fixed in the platform_device rather
+	 * than us fiddle with its internals.
+	 */
+
+	platform_device_unregister(dev_priv->display.audio.lpe.platdev);
+}
+
+static void lpe_audio_irq_unmask(struct irq_data *d)
+{
+}
+
+static void lpe_audio_irq_mask(struct irq_data *d)
+{
+}
+
+static struct irq_chip lpe_audio_irqchip = {
+	.name = "hdmi_lpe_audio_irqchip",
+	.irq_mask = lpe_audio_irq_mask,
+	.irq_unmask = lpe_audio_irq_unmask,
+};
+
+static int lpe_audio_irq_init(struct drm_i915_private *dev_priv)
+{
+	int irq = dev_priv->display.audio.lpe.irq;
+
+	drm_WARN_ON(&dev_priv->drm, !intel_irqs_enabled(dev_priv));
+	irq_set_chip_and_handler_name(irq,
+				&lpe_audio_irqchip,
+				handle_simple_irq,
+				"hdmi_lpe_audio_irq_handler");
+
+	return irq_set_chip_data(irq, dev_priv);
+}
+
+static bool lpe_audio_detect(struct drm_i915_private *dev_priv)
+{
+	int lpe_present = false;
+
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+		static const struct pci_device_id atom_hdaudio_ids[] = {
+			/* Baytrail */
+			{PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0f04)},
+			/* Braswell */
+			{PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2284)},
+			{}
+		};
+
+		if (!pci_dev_present(atom_hdaudio_ids)) {
+			drm_info(&dev_priv->drm,
+				 "HDaudio controller not detected, using LPE audio instead\n");
+			lpe_present = true;
+		}
+	}
+	return lpe_present;
+}
+
+static int lpe_audio_setup(struct drm_i915_private *dev_priv)
+{
+	int ret;
+
+	dev_priv->display.audio.lpe.irq = irq_alloc_desc(0);
+	if (dev_priv->display.audio.lpe.irq < 0) {
+		drm_err(&dev_priv->drm, "Failed to allocate IRQ desc: %d\n",
+			dev_priv->display.audio.lpe.irq);
+		ret = dev_priv->display.audio.lpe.irq;
+		goto err;
+	}
+
+	drm_dbg(&dev_priv->drm, "irq = %d\n", dev_priv->display.audio.lpe.irq);
+
+	ret = lpe_audio_irq_init(dev_priv);
+
+	if (ret) {
+		drm_err(&dev_priv->drm,
+			"Failed to initialize irqchip for lpe audio: %d\n",
+			ret);
+		goto err_free_irq;
+	}
+
+	dev_priv->display.audio.lpe.platdev = lpe_audio_platdev_create(dev_priv);
+
+	if (IS_ERR(dev_priv->display.audio.lpe.platdev)) {
+		ret = PTR_ERR(dev_priv->display.audio.lpe.platdev);
+		drm_err(&dev_priv->drm,
+			"Failed to create lpe audio platform device: %d\n",
+			ret);
+		goto err_free_irq;
+	}
+
+	/* enable chicken bit; at least this is required for Dell Wyse 3040
+	 * with DP outputs (but only sometimes by some reason!)
+	 */
+	intel_de_write(dev_priv, VLV_AUD_CHICKEN_BIT_REG,
+		       VLV_CHICKEN_BIT_DBG_ENABLE);
+
+	return 0;
+err_free_irq:
+	irq_free_desc(dev_priv->display.audio.lpe.irq);
+err:
+	dev_priv->display.audio.lpe.irq = -1;
+	dev_priv->display.audio.lpe.platdev = NULL;
+	return ret;
+}
+
+/**
+ * intel_lpe_audio_irq_handler() - forwards the LPE audio irq
+ * @dev_priv: the i915 drm device private data
+ *
+ * the LPE Audio irq is forwarded to the irq handler registered by LPE audio
+ * driver.
+ */
+void intel_lpe_audio_irq_handler(struct drm_i915_private *dev_priv)
+{
+	int ret;
+
+	if (!HAS_LPE_AUDIO(dev_priv))
+		return;
+
+	ret = generic_handle_irq(dev_priv->display.audio.lpe.irq);
+	if (ret)
+		drm_err_ratelimited(&dev_priv->drm,
+				    "error handling LPE audio irq: %d\n", ret);
+}
+
+/**
+ * intel_lpe_audio_init() - detect and setup the bridge between HDMI LPE Audio
+ * driver and i915
+ * @dev_priv: the i915 drm device private data
+ *
+ * Return: 0 if successful. non-zero if detection or
+ * llocation/initialization fails
+ */
+int intel_lpe_audio_init(struct drm_i915_private *dev_priv)
+{
+	int ret = -ENODEV;
+
+	if (lpe_audio_detect(dev_priv)) {
+		ret = lpe_audio_setup(dev_priv);
+		if (ret < 0)
+			drm_err(&dev_priv->drm,
+				"failed to setup LPE Audio bridge\n");
+	}
+	return ret;
+}
+
+/**
+ * intel_lpe_audio_teardown() - destroy the bridge between HDMI LPE
+ * audio driver and i915
+ * @dev_priv: the i915 drm device private data
+ *
+ * release all the resources for LPE audio <-> i915 bridge.
+ */
+void intel_lpe_audio_teardown(struct drm_i915_private *dev_priv)
+{
+	if (!HAS_LPE_AUDIO(dev_priv))
+		return;
+
+	lpe_audio_platdev_destroy(dev_priv);
+
+	irq_free_desc(dev_priv->display.audio.lpe.irq);
+
+	dev_priv->display.audio.lpe.irq = -1;
+	dev_priv->display.audio.lpe.platdev = NULL;
+}
+
+/**
+ * intel_lpe_audio_notify() - notify lpe audio event
+ * audio driver and i915
+ * @dev_priv: the i915 drm device private data
+ * @pipe: pipe
+ * @port: port
+ * @eld : ELD data
+ * @ls_clock: Link symbol clock in kHz
+ * @dp_output: Driving a DP output?
+ *
+ * Notify lpe audio driver of eld change.
+ */
+void intel_lpe_audio_notify(struct drm_i915_private *dev_priv,
+			    enum pipe pipe, enum port port,
+			    const void *eld, int ls_clock, bool dp_output)
+{
+	unsigned long irqflags;
+	struct intel_hdmi_lpe_audio_pdata *pdata;
+	struct intel_hdmi_lpe_audio_port_pdata *ppdata;
+	u32 audio_enable;
+
+	if (!HAS_LPE_AUDIO(dev_priv))
+		return;
+
+	pdata = dev_get_platdata(&dev_priv->display.audio.lpe.platdev->dev);
+	ppdata = &pdata->port[port - PORT_B];
+
+	spin_lock_irqsave(&pdata->lpe_audio_slock, irqflags);
+
+	audio_enable = intel_de_read(dev_priv, VLV_AUD_PORT_EN_DBG(port));
+
+	if (eld != NULL) {
+		memcpy(ppdata->eld, eld, HDMI_MAX_ELD_BYTES);
+		ppdata->pipe = pipe;
+		ppdata->ls_clock = ls_clock;
+		ppdata->dp_output = dp_output;
+
+		/* Unmute the amp for both DP and HDMI */
+		intel_de_write(dev_priv, VLV_AUD_PORT_EN_DBG(port),
+			       audio_enable & ~VLV_AMP_MUTE);
+	} else {
+		memset(ppdata->eld, 0, HDMI_MAX_ELD_BYTES);
+		ppdata->pipe = -1;
+		ppdata->ls_clock = 0;
+		ppdata->dp_output = false;
+
+		/* Mute the amp for both DP and HDMI */
+		intel_de_write(dev_priv, VLV_AUD_PORT_EN_DBG(port),
+			       audio_enable | VLV_AMP_MUTE);
+	}
+
+	if (pdata->notify_audio_lpe)
+		pdata->notify_audio_lpe(dev_priv->display.audio.lpe.platdev, port - PORT_B);
+
+	spin_unlock_irqrestore(&pdata->lpe_audio_slock, irqflags);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_lpe_audio.h b/drivers/gpu/drm/i915/display/intel_lpe_audio.h
new file mode 100644
index 000000000..f848c5038
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_lpe_audio.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_LPE_AUDIO_H__
+#define __INTEL_LPE_AUDIO_H__
+
+#include <linux/types.h>
+
+enum pipe;
+enum port;
+struct drm_i915_private;
+
+int  intel_lpe_audio_init(struct drm_i915_private *dev_priv);
+void intel_lpe_audio_teardown(struct drm_i915_private *dev_priv);
+void intel_lpe_audio_irq_handler(struct drm_i915_private *dev_priv);
+void intel_lpe_audio_notify(struct drm_i915_private *dev_priv,
+			    enum pipe pipe, enum port port,
+			    const void *eld, int ls_clock, bool dp_output);
+
+#endif /* __INTEL_LPE_AUDIO_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.c b/drivers/gpu/drm/i915/display/intel_lspcon.c
new file mode 100644
index 000000000..15d59de88
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_lspcon.c
@@ -0,0 +1,716 @@
+/*
+ * Copyright © 2016 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ *
+ */
+
+#include <drm/display/drm_dp_dual_mode_helper.h>
+#include <drm/display/drm_hdmi_helper.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_edid.h>
+
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_dp.h"
+#include "intel_lspcon.h"
+#include "intel_hdmi.h"
+
+/* LSPCON OUI Vendor ID(signatures) */
+#define LSPCON_VENDOR_PARADE_OUI 0x001CF8
+#define LSPCON_VENDOR_MCA_OUI 0x0060AD
+
+#define DPCD_MCA_LSPCON_HDR_STATUS	0x70003
+#define DPCD_PARADE_LSPCON_HDR_STATUS	0x00511
+
+/* AUX addresses to write MCA AVI IF */
+#define LSPCON_MCA_AVI_IF_WRITE_OFFSET 0x5C0
+#define LSPCON_MCA_AVI_IF_CTRL 0x5DF
+#define  LSPCON_MCA_AVI_IF_KICKOFF (1 << 0)
+#define  LSPCON_MCA_AVI_IF_HANDLED (1 << 1)
+
+/* AUX addresses to write Parade AVI IF */
+#define LSPCON_PARADE_AVI_IF_WRITE_OFFSET 0x516
+#define LSPCON_PARADE_AVI_IF_CTRL 0x51E
+#define  LSPCON_PARADE_AVI_IF_KICKOFF (1 << 7)
+#define LSPCON_PARADE_AVI_IF_DATA_SIZE 32
+
+static struct intel_dp *lspcon_to_intel_dp(struct intel_lspcon *lspcon)
+{
+	struct intel_digital_port *dig_port =
+		container_of(lspcon, struct intel_digital_port, lspcon);
+
+	return &dig_port->dp;
+}
+
+static const char *lspcon_mode_name(enum drm_lspcon_mode mode)
+{
+	switch (mode) {
+	case DRM_LSPCON_MODE_PCON:
+		return "PCON";
+	case DRM_LSPCON_MODE_LS:
+		return "LS";
+	case DRM_LSPCON_MODE_INVALID:
+		return "INVALID";
+	default:
+		MISSING_CASE(mode);
+		return "INVALID";
+	}
+}
+
+static bool lspcon_detect_vendor(struct intel_lspcon *lspcon)
+{
+	struct intel_dp *dp = lspcon_to_intel_dp(lspcon);
+	struct drm_i915_private *i915 = dp_to_i915(dp);
+	struct drm_dp_dpcd_ident *ident;
+	u32 vendor_oui;
+
+	if (drm_dp_read_desc(&dp->aux, &dp->desc, drm_dp_is_branch(dp->dpcd))) {
+		drm_err(&i915->drm, "Can't read description\n");
+		return false;
+	}
+
+	ident = &dp->desc.ident;
+	vendor_oui = (ident->oui[0] << 16) | (ident->oui[1] << 8) |
+		      ident->oui[2];
+
+	switch (vendor_oui) {
+	case LSPCON_VENDOR_MCA_OUI:
+		lspcon->vendor = LSPCON_VENDOR_MCA;
+		drm_dbg_kms(&i915->drm, "Vendor: Mega Chips\n");
+		break;
+
+	case LSPCON_VENDOR_PARADE_OUI:
+		lspcon->vendor = LSPCON_VENDOR_PARADE;
+		drm_dbg_kms(&i915->drm, "Vendor: Parade Tech\n");
+		break;
+
+	default:
+		drm_err(&i915->drm, "Invalid/Unknown vendor OUI\n");
+		return false;
+	}
+
+	return true;
+}
+
+static u32 get_hdr_status_reg(struct intel_lspcon *lspcon)
+{
+	if (lspcon->vendor == LSPCON_VENDOR_MCA)
+		return DPCD_MCA_LSPCON_HDR_STATUS;
+	else
+		return DPCD_PARADE_LSPCON_HDR_STATUS;
+}
+
+void lspcon_detect_hdr_capability(struct intel_lspcon *lspcon)
+{
+	struct intel_dp *intel_dp = lspcon_to_intel_dp(lspcon);
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	u8 hdr_caps;
+	int ret;
+
+	ret = drm_dp_dpcd_read(&intel_dp->aux, get_hdr_status_reg(lspcon),
+			       &hdr_caps, 1);
+
+	if (ret < 0) {
+		drm_dbg_kms(&i915->drm, "HDR capability detection failed\n");
+		lspcon->hdr_supported = false;
+	} else if (hdr_caps & 0x1) {
+		drm_dbg_kms(&i915->drm, "LSPCON capable of HDR\n");
+		lspcon->hdr_supported = true;
+	}
+}
+
+static enum drm_lspcon_mode lspcon_get_current_mode(struct intel_lspcon *lspcon)
+{
+	struct intel_dp *intel_dp = lspcon_to_intel_dp(lspcon);
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	enum drm_lspcon_mode current_mode;
+	struct i2c_adapter *adapter = &intel_dp->aux.ddc;
+
+	if (drm_lspcon_get_mode(intel_dp->aux.drm_dev, adapter, &current_mode)) {
+		drm_dbg_kms(&i915->drm, "Error reading LSPCON mode\n");
+		return DRM_LSPCON_MODE_INVALID;
+	}
+	return current_mode;
+}
+
+static enum drm_lspcon_mode lspcon_wait_mode(struct intel_lspcon *lspcon,
+					     enum drm_lspcon_mode mode)
+{
+	struct intel_dp *intel_dp = lspcon_to_intel_dp(lspcon);
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	enum drm_lspcon_mode current_mode;
+
+	current_mode = lspcon_get_current_mode(lspcon);
+	if (current_mode == mode)
+		goto out;
+
+	drm_dbg_kms(&i915->drm, "Waiting for LSPCON mode %s to settle\n",
+		    lspcon_mode_name(mode));
+
+	wait_for((current_mode = lspcon_get_current_mode(lspcon)) == mode, 400);
+	if (current_mode != mode)
+		drm_err(&i915->drm, "LSPCON mode hasn't settled\n");
+
+out:
+	drm_dbg_kms(&i915->drm, "Current LSPCON mode %s\n",
+		    lspcon_mode_name(current_mode));
+
+	return current_mode;
+}
+
+static int lspcon_change_mode(struct intel_lspcon *lspcon,
+			      enum drm_lspcon_mode mode)
+{
+	struct intel_dp *intel_dp = lspcon_to_intel_dp(lspcon);
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	int err;
+	enum drm_lspcon_mode current_mode;
+	struct i2c_adapter *adapter = &intel_dp->aux.ddc;
+
+	err = drm_lspcon_get_mode(intel_dp->aux.drm_dev, adapter, &current_mode);
+	if (err) {
+		drm_err(&i915->drm, "Error reading LSPCON mode\n");
+		return err;
+	}
+
+	if (current_mode == mode) {
+		drm_dbg_kms(&i915->drm, "Current mode = desired LSPCON mode\n");
+		return 0;
+	}
+
+	err = drm_lspcon_set_mode(intel_dp->aux.drm_dev, adapter, mode);
+	if (err < 0) {
+		drm_err(&i915->drm, "LSPCON mode change failed\n");
+		return err;
+	}
+
+	lspcon->mode = mode;
+	drm_dbg_kms(&i915->drm, "LSPCON mode changed done\n");
+	return 0;
+}
+
+static bool lspcon_wake_native_aux_ch(struct intel_lspcon *lspcon)
+{
+	struct intel_dp *intel_dp = lspcon_to_intel_dp(lspcon);
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	u8 rev;
+
+	if (drm_dp_dpcd_readb(&lspcon_to_intel_dp(lspcon)->aux, DP_DPCD_REV,
+			      &rev) != 1) {
+		drm_dbg_kms(&i915->drm, "Native AUX CH down\n");
+		return false;
+	}
+
+	drm_dbg_kms(&i915->drm, "Native AUX CH up, DPCD version: %d.%d\n",
+		    rev >> 4, rev & 0xf);
+
+	return true;
+}
+
+static bool lspcon_probe(struct intel_lspcon *lspcon)
+{
+	int retry;
+	enum drm_dp_dual_mode_type adaptor_type;
+	struct intel_dp *intel_dp = lspcon_to_intel_dp(lspcon);
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	struct i2c_adapter *adapter = &intel_dp->aux.ddc;
+	enum drm_lspcon_mode expected_mode;
+
+	expected_mode = lspcon_wake_native_aux_ch(lspcon) ?
+			DRM_LSPCON_MODE_PCON : DRM_LSPCON_MODE_LS;
+
+	/* Lets probe the adaptor and check its type */
+	for (retry = 0; retry < 6; retry++) {
+		if (retry)
+			usleep_range(500, 1000);
+
+		adaptor_type = drm_dp_dual_mode_detect(intel_dp->aux.drm_dev, adapter);
+		if (adaptor_type == DRM_DP_DUAL_MODE_LSPCON)
+			break;
+	}
+
+	if (adaptor_type != DRM_DP_DUAL_MODE_LSPCON) {
+		drm_dbg_kms(&i915->drm, "No LSPCON detected, found %s\n",
+			    drm_dp_get_dual_mode_type_name(adaptor_type));
+		return false;
+	}
+
+	/* Yay ... got a LSPCON device */
+	drm_dbg_kms(&i915->drm, "LSPCON detected\n");
+	lspcon->mode = lspcon_wait_mode(lspcon, expected_mode);
+
+	/*
+	 * In the SW state machine, lets Put LSPCON in PCON mode only.
+	 * In this way, it will work with both HDMI 1.4 sinks as well as HDMI
+	 * 2.0 sinks.
+	 */
+	if (lspcon->mode != DRM_LSPCON_MODE_PCON) {
+		if (lspcon_change_mode(lspcon, DRM_LSPCON_MODE_PCON) < 0) {
+			drm_err(&i915->drm, "LSPCON mode change to PCON failed\n");
+			return false;
+		}
+	}
+	return true;
+}
+
+static void lspcon_resume_in_pcon_wa(struct intel_lspcon *lspcon)
+{
+	struct intel_dp *intel_dp = lspcon_to_intel_dp(lspcon);
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	unsigned long start = jiffies;
+
+	while (1) {
+		if (intel_digital_port_connected(&dig_port->base)) {
+			drm_dbg_kms(&i915->drm, "LSPCON recovering in PCON mode after %u ms\n",
+				    jiffies_to_msecs(jiffies - start));
+			return;
+		}
+
+		if (time_after(jiffies, start + msecs_to_jiffies(1000)))
+			break;
+
+		usleep_range(10000, 15000);
+	}
+
+	drm_dbg_kms(&i915->drm, "LSPCON DP descriptor mismatch after resume\n");
+}
+
+static bool lspcon_parade_fw_ready(struct drm_dp_aux *aux)
+{
+	u8 avi_if_ctrl;
+	u8 retry;
+	ssize_t ret;
+
+	/* Check if LSPCON FW is ready for data */
+	for (retry = 0; retry < 5; retry++) {
+		if (retry)
+			usleep_range(200, 300);
+
+		ret = drm_dp_dpcd_read(aux, LSPCON_PARADE_AVI_IF_CTRL,
+				       &avi_if_ctrl, 1);
+		if (ret < 0) {
+			drm_err(aux->drm_dev, "Failed to read AVI IF control\n");
+			return false;
+		}
+
+		if ((avi_if_ctrl & LSPCON_PARADE_AVI_IF_KICKOFF) == 0)
+			return true;
+	}
+
+	drm_err(aux->drm_dev, "Parade FW not ready to accept AVI IF\n");
+	return false;
+}
+
+static bool _lspcon_parade_write_infoframe_blocks(struct drm_dp_aux *aux,
+						  u8 *avi_buf)
+{
+	u8 avi_if_ctrl;
+	u8 block_count = 0;
+	u8 *data;
+	u16 reg;
+	ssize_t ret;
+
+	while (block_count < 4) {
+		if (!lspcon_parade_fw_ready(aux)) {
+			drm_dbg_kms(aux->drm_dev, "LSPCON FW not ready, block %d\n",
+				    block_count);
+			return false;
+		}
+
+		reg = LSPCON_PARADE_AVI_IF_WRITE_OFFSET;
+		data = avi_buf + block_count * 8;
+		ret = drm_dp_dpcd_write(aux, reg, data, 8);
+		if (ret < 0) {
+			drm_err(aux->drm_dev, "Failed to write AVI IF block %d\n",
+				block_count);
+			return false;
+		}
+
+		/*
+		 * Once a block of data is written, we have to inform the FW
+		 * about this by writing into avi infoframe control register:
+		 * - set the kickoff bit[7] to 1
+		 * - write the block no. to bits[1:0]
+		 */
+		reg = LSPCON_PARADE_AVI_IF_CTRL;
+		avi_if_ctrl = LSPCON_PARADE_AVI_IF_KICKOFF | block_count;
+		ret = drm_dp_dpcd_write(aux, reg, &avi_if_ctrl, 1);
+		if (ret < 0) {
+			drm_err(aux->drm_dev, "Failed to update (0x%x), block %d\n",
+				reg, block_count);
+			return false;
+		}
+
+		block_count++;
+	}
+
+	drm_dbg_kms(aux->drm_dev, "Wrote AVI IF blocks successfully\n");
+	return true;
+}
+
+static bool _lspcon_write_avi_infoframe_parade(struct drm_dp_aux *aux,
+					       const u8 *frame,
+					       ssize_t len)
+{
+	u8 avi_if[LSPCON_PARADE_AVI_IF_DATA_SIZE] = {1, };
+
+	/*
+	 * Parade's frames contains 32 bytes of data, divided
+	 * into 4 frames:
+	 *	Token byte (first byte of first frame, must be non-zero)
+	 *	HB0 to HB2	 from AVI IF (3 bytes header)
+	 *	PB0 to PB27 from AVI IF (28 bytes data)
+	 * So it should look like this
+	 *	first block: | <token> <HB0-HB2> <DB0-DB3> |
+	 *	next 3 blocks: |<DB4-DB11>|<DB12-DB19>|<DB20-DB28>|
+	 */
+
+	if (len > LSPCON_PARADE_AVI_IF_DATA_SIZE - 1) {
+		drm_err(aux->drm_dev, "Invalid length of infoframes\n");
+		return false;
+	}
+
+	memcpy(&avi_if[1], frame, len);
+
+	if (!_lspcon_parade_write_infoframe_blocks(aux, avi_if)) {
+		drm_dbg_kms(aux->drm_dev, "Failed to write infoframe blocks\n");
+		return false;
+	}
+
+	return true;
+}
+
+static bool _lspcon_write_avi_infoframe_mca(struct drm_dp_aux *aux,
+					    const u8 *buffer, ssize_t len)
+{
+	int ret;
+	u32 val = 0;
+	u32 retry;
+	u16 reg;
+	const u8 *data = buffer;
+
+	reg = LSPCON_MCA_AVI_IF_WRITE_OFFSET;
+	while (val < len) {
+		/* DPCD write for AVI IF can fail on a slow FW day, so retry */
+		for (retry = 0; retry < 5; retry++) {
+			ret = drm_dp_dpcd_write(aux, reg, (void *)data, 1);
+			if (ret == 1) {
+				break;
+			} else if (retry < 4) {
+				mdelay(50);
+				continue;
+			} else {
+				drm_err(aux->drm_dev, "DPCD write failed at:0x%x\n", reg);
+				return false;
+			}
+		}
+		val++; reg++; data++;
+	}
+
+	val = 0;
+	reg = LSPCON_MCA_AVI_IF_CTRL;
+	ret = drm_dp_dpcd_read(aux, reg, &val, 1);
+	if (ret < 0) {
+		drm_err(aux->drm_dev, "DPCD read failed, address 0x%x\n", reg);
+		return false;
+	}
+
+	/* Indicate LSPCON chip about infoframe, clear bit 1 and set bit 0 */
+	val &= ~LSPCON_MCA_AVI_IF_HANDLED;
+	val |= LSPCON_MCA_AVI_IF_KICKOFF;
+
+	ret = drm_dp_dpcd_write(aux, reg, &val, 1);
+	if (ret < 0) {
+		drm_err(aux->drm_dev, "DPCD read failed, address 0x%x\n", reg);
+		return false;
+	}
+
+	val = 0;
+	ret = drm_dp_dpcd_read(aux, reg, &val, 1);
+	if (ret < 0) {
+		drm_err(aux->drm_dev, "DPCD read failed, address 0x%x\n", reg);
+		return false;
+	}
+
+	if (val == LSPCON_MCA_AVI_IF_HANDLED)
+		drm_dbg_kms(aux->drm_dev, "AVI IF handled by FW\n");
+
+	return true;
+}
+
+void lspcon_write_infoframe(struct intel_encoder *encoder,
+			    const struct intel_crtc_state *crtc_state,
+			    unsigned int type,
+			    const void *frame, ssize_t len)
+{
+	bool ret = true;
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	struct intel_lspcon *lspcon = enc_to_intel_lspcon(encoder);
+
+	switch (type) {
+	case HDMI_INFOFRAME_TYPE_AVI:
+		if (lspcon->vendor == LSPCON_VENDOR_MCA)
+			ret = _lspcon_write_avi_infoframe_mca(&intel_dp->aux,
+							      frame, len);
+		else
+			ret = _lspcon_write_avi_infoframe_parade(&intel_dp->aux,
+								 frame, len);
+		break;
+	case HDMI_PACKET_TYPE_GAMUT_METADATA:
+		drm_dbg_kms(&i915->drm, "Update HDR metadata for lspcon\n");
+		/* It uses the legacy hsw implementation for the same */
+		hsw_write_infoframe(encoder, crtc_state, type, frame, len);
+		break;
+	default:
+		return;
+	}
+
+	if (!ret) {
+		drm_err(&i915->drm, "Failed to write infoframes\n");
+		return;
+	}
+}
+
+void lspcon_read_infoframe(struct intel_encoder *encoder,
+			   const struct intel_crtc_state *crtc_state,
+			   unsigned int type,
+			   void *frame, ssize_t len)
+{
+	/* FIXME implement for AVI Infoframe as well */
+	if (type == HDMI_PACKET_TYPE_GAMUT_METADATA)
+		hsw_read_infoframe(encoder, crtc_state, type,
+				   frame, len);
+}
+
+void lspcon_set_infoframes(struct intel_encoder *encoder,
+			   bool enable,
+			   const struct intel_crtc_state *crtc_state,
+			   const struct drm_connector_state *conn_state)
+{
+	ssize_t ret;
+	union hdmi_infoframe frame;
+	u8 buf[VIDEO_DIP_DATA_SIZE];
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	struct intel_lspcon *lspcon = &dig_port->lspcon;
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	const struct drm_display_mode *adjusted_mode =
+		&crtc_state->hw.adjusted_mode;
+
+	if (!lspcon->active) {
+		drm_err(&i915->drm, "Writing infoframes while LSPCON disabled ?\n");
+		return;
+	}
+
+	/* FIXME precompute infoframes */
+
+	ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi,
+						       conn_state->connector,
+						       adjusted_mode);
+	if (ret < 0) {
+		drm_err(&i915->drm, "couldn't fill AVI infoframe\n");
+		return;
+	}
+
+	/*
+	 * Currently there is no interface defined to
+	 * check user preference between RGB/YCBCR444
+	 * or YCBCR420. So the only possible case for
+	 * YCBCR444 usage is driving YCBCR420 output
+	 * with LSPCON, when pipe is configured for
+	 * YCBCR444 output and LSPCON takes care of
+	 * downsampling it.
+	 */
+	if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR444)
+		frame.avi.colorspace = HDMI_COLORSPACE_YUV420;
+	else
+		frame.avi.colorspace = HDMI_COLORSPACE_RGB;
+
+	/* Set the Colorspace as per the HDMI spec */
+	drm_hdmi_avi_infoframe_colorimetry(&frame.avi, conn_state);
+
+	/* nonsense combination */
+	drm_WARN_ON(encoder->base.dev, crtc_state->limited_color_range &&
+		    crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB);
+
+	if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_RGB) {
+		drm_hdmi_avi_infoframe_quant_range(&frame.avi,
+						   conn_state->connector,
+						   adjusted_mode,
+						   crtc_state->limited_color_range ?
+						   HDMI_QUANTIZATION_RANGE_LIMITED :
+						   HDMI_QUANTIZATION_RANGE_FULL);
+	} else {
+		frame.avi.quantization_range = HDMI_QUANTIZATION_RANGE_DEFAULT;
+		frame.avi.ycc_quantization_range = HDMI_YCC_QUANTIZATION_RANGE_LIMITED;
+	}
+
+	drm_hdmi_avi_infoframe_content_type(&frame.avi, conn_state);
+
+	ret = hdmi_infoframe_pack(&frame, buf, sizeof(buf));
+	if (ret < 0) {
+		drm_err(&i915->drm, "Failed to pack AVI IF\n");
+		return;
+	}
+
+	dig_port->write_infoframe(encoder, crtc_state, HDMI_INFOFRAME_TYPE_AVI,
+				  buf, ret);
+}
+
+static bool _lspcon_read_avi_infoframe_enabled_mca(struct drm_dp_aux *aux)
+{
+	int ret;
+	u32 val = 0;
+	u16 reg = LSPCON_MCA_AVI_IF_CTRL;
+
+	ret = drm_dp_dpcd_read(aux, reg, &val, 1);
+	if (ret < 0) {
+		drm_err(aux->drm_dev, "DPCD read failed, address 0x%x\n", reg);
+		return false;
+	}
+
+	return val & LSPCON_MCA_AVI_IF_KICKOFF;
+}
+
+static bool _lspcon_read_avi_infoframe_enabled_parade(struct drm_dp_aux *aux)
+{
+	int ret;
+	u32 val = 0;
+	u16 reg = LSPCON_PARADE_AVI_IF_CTRL;
+
+	ret = drm_dp_dpcd_read(aux, reg, &val, 1);
+	if (ret < 0) {
+		drm_err(aux->drm_dev, "DPCD read failed, address 0x%x\n", reg);
+		return false;
+	}
+
+	return val & LSPCON_PARADE_AVI_IF_KICKOFF;
+}
+
+u32 lspcon_infoframes_enabled(struct intel_encoder *encoder,
+			      const struct intel_crtc_state *pipe_config)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	struct intel_lspcon *lspcon = enc_to_intel_lspcon(encoder);
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	bool infoframes_enabled;
+	u32 val = 0;
+	u32 mask, tmp;
+
+	if (lspcon->vendor == LSPCON_VENDOR_MCA)
+		infoframes_enabled = _lspcon_read_avi_infoframe_enabled_mca(&intel_dp->aux);
+	else
+		infoframes_enabled = _lspcon_read_avi_infoframe_enabled_parade(&intel_dp->aux);
+
+	if (infoframes_enabled)
+		val |= intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_AVI);
+
+	if (lspcon->hdr_supported) {
+		tmp = intel_de_read(dev_priv,
+				    HSW_TVIDEO_DIP_CTL(pipe_config->cpu_transcoder));
+		mask = VIDEO_DIP_ENABLE_GMP_HSW;
+
+		if (tmp & mask)
+			val |= intel_hdmi_infoframe_enable(HDMI_PACKET_TYPE_GAMUT_METADATA);
+	}
+
+	return val;
+}
+
+void lspcon_wait_pcon_mode(struct intel_lspcon *lspcon)
+{
+	lspcon_wait_mode(lspcon, DRM_LSPCON_MODE_PCON);
+}
+
+bool lspcon_init(struct intel_digital_port *dig_port)
+{
+	struct intel_dp *intel_dp = &dig_port->dp;
+	struct intel_lspcon *lspcon = &dig_port->lspcon;
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	struct drm_connector *connector = &intel_dp->attached_connector->base;
+
+	lspcon->active = false;
+	lspcon->mode = DRM_LSPCON_MODE_INVALID;
+
+	if (!lspcon_probe(lspcon)) {
+		drm_err(&i915->drm, "Failed to probe lspcon\n");
+		return false;
+	}
+
+	if (drm_dp_read_dpcd_caps(&intel_dp->aux, intel_dp->dpcd) != 0) {
+		drm_err(&i915->drm, "LSPCON DPCD read failed\n");
+		return false;
+	}
+
+	if (!lspcon_detect_vendor(lspcon)) {
+		drm_err(&i915->drm, "LSPCON vendor detection failed\n");
+		return false;
+	}
+
+	connector->ycbcr_420_allowed = true;
+	lspcon->active = true;
+	drm_dbg_kms(&i915->drm, "Success: LSPCON init\n");
+	return true;
+}
+
+u32 intel_lspcon_infoframes_enabled(struct intel_encoder *encoder,
+				    const struct intel_crtc_state *pipe_config)
+{
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+
+	return dig_port->infoframes_enabled(encoder, pipe_config);
+}
+
+void lspcon_resume(struct intel_digital_port *dig_port)
+{
+	struct intel_lspcon *lspcon = &dig_port->lspcon;
+	struct drm_device *dev = dig_port->base.base.dev;
+	struct drm_i915_private *i915 = to_i915(dev);
+	enum drm_lspcon_mode expected_mode;
+
+	if (!intel_bios_is_lspcon_present(i915, dig_port->base.port))
+		return;
+
+	if (!lspcon->active) {
+		if (!lspcon_init(dig_port)) {
+			drm_err(&i915->drm, "LSPCON init failed on port %c\n",
+				port_name(dig_port->base.port));
+			return;
+		}
+	}
+
+	if (lspcon_wake_native_aux_ch(lspcon)) {
+		expected_mode = DRM_LSPCON_MODE_PCON;
+		lspcon_resume_in_pcon_wa(lspcon);
+	} else {
+		expected_mode = DRM_LSPCON_MODE_LS;
+	}
+
+	if (lspcon_wait_mode(lspcon, expected_mode) == DRM_LSPCON_MODE_PCON)
+		return;
+
+	if (lspcon_change_mode(lspcon, DRM_LSPCON_MODE_PCON))
+		drm_err(&i915->drm, "LSPCON resume failed\n");
+	else
+		drm_dbg_kms(&i915->drm, "LSPCON resume success\n");
+}
diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.h b/drivers/gpu/drm/i915/display/intel_lspcon.h
new file mode 100644
index 000000000..e19e10492
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_lspcon.h
@@ -0,0 +1,47 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_LSPCON_H__
+#define __INTEL_LSPCON_H__
+
+#include <linux/types.h>
+
+struct drm_connector;
+struct drm_connector_state;
+struct intel_crtc_state;
+struct intel_digital_port;
+struct intel_encoder;
+struct intel_lspcon;
+
+bool lspcon_init(struct intel_digital_port *dig_port);
+void lspcon_detect_hdr_capability(struct intel_lspcon *lspcon);
+void lspcon_resume(struct intel_digital_port *dig_port);
+void lspcon_wait_pcon_mode(struct intel_lspcon *lspcon);
+void lspcon_write_infoframe(struct intel_encoder *encoder,
+			    const struct intel_crtc_state *crtc_state,
+			    unsigned int type,
+			    const void *buf, ssize_t len);
+void lspcon_read_infoframe(struct intel_encoder *encoder,
+			   const struct intel_crtc_state *crtc_state,
+			   unsigned int type,
+			   void *frame, ssize_t len);
+void lspcon_set_infoframes(struct intel_encoder *encoder,
+			   bool enable,
+			   const struct intel_crtc_state *crtc_state,
+			   const struct drm_connector_state *conn_state);
+u32 lspcon_infoframes_enabled(struct intel_encoder *encoder,
+			      const struct intel_crtc_state *pipe_config);
+u32 intel_lspcon_infoframes_enabled(struct intel_encoder *encoder,
+				    const struct intel_crtc_state *pipe_config);
+void hsw_write_infoframe(struct intel_encoder *encoder,
+			 const struct intel_crtc_state *crtc_state,
+			 unsigned int type,
+			 const void *frame, ssize_t len);
+void hsw_read_infoframe(struct intel_encoder *encoder,
+			const struct intel_crtc_state *crtc_state,
+			unsigned int type,
+			void *frame, ssize_t len);
+
+#endif /* __INTEL_LSPCON_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_lvds.c b/drivers/gpu/drm/i915/display/intel_lvds.c
new file mode 100644
index 000000000..40b5d3d3c
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_lvds.c
@@ -0,0 +1,1019 @@
+/*
+ * Copyright © 2006-2007 Intel Corporation
+ * Copyright (c) 2006 Dave Airlie <airlied@linux.ie>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *	Eric Anholt <eric@anholt.net>
+ *      Dave Airlie <airlied@linux.ie>
+ *      Jesse Barnes <jesse.barnes@intel.com>
+ */
+
+#include <acpi/button.h>
+#include <linux/acpi.h>
+#include <linux/dmi.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#include <linux/vga_switcheroo.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_edid.h>
+
+#include "i915_drv.h"
+#include "intel_atomic.h"
+#include "intel_backlight.h"
+#include "intel_connector.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_dpll.h"
+#include "intel_fdi.h"
+#include "intel_gmbus.h"
+#include "intel_lvds.h"
+#include "intel_panel.h"
+
+/* Private structure for the integrated LVDS support */
+struct intel_lvds_pps {
+	/* 100us units */
+	int t1_t2;
+	int t3;
+	int t4;
+	int t5;
+	int tx;
+
+	int divider;
+
+	int port;
+	bool powerdown_on_reset;
+};
+
+struct intel_lvds_encoder {
+	struct intel_encoder base;
+
+	bool is_dual_link;
+	i915_reg_t reg;
+	u32 a3_power;
+
+	struct intel_lvds_pps init_pps;
+	u32 init_lvds_val;
+
+	struct intel_connector *attached_connector;
+};
+
+static struct intel_lvds_encoder *to_lvds_encoder(struct drm_encoder *encoder)
+{
+	return container_of(encoder, struct intel_lvds_encoder, base.base);
+}
+
+bool intel_lvds_port_enabled(struct drm_i915_private *dev_priv,
+			     i915_reg_t lvds_reg, enum pipe *pipe)
+{
+	u32 val;
+
+	val = intel_de_read(dev_priv, lvds_reg);
+
+	/* asserts want to know the pipe even if the port is disabled */
+	if (HAS_PCH_CPT(dev_priv))
+		*pipe = REG_FIELD_GET(LVDS_PIPE_SEL_MASK_CPT, val);
+	else
+		*pipe = REG_FIELD_GET(LVDS_PIPE_SEL_MASK, val);
+
+	return val & LVDS_PORT_EN;
+}
+
+static bool intel_lvds_get_hw_state(struct intel_encoder *encoder,
+				    enum pipe *pipe)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(&encoder->base);
+	intel_wakeref_t wakeref;
+	bool ret;
+
+	wakeref = intel_display_power_get_if_enabled(dev_priv,
+						     encoder->power_domain);
+	if (!wakeref)
+		return false;
+
+	ret = intel_lvds_port_enabled(dev_priv, lvds_encoder->reg, pipe);
+
+	intel_display_power_put(dev_priv, encoder->power_domain, wakeref);
+
+	return ret;
+}
+
+static void intel_lvds_get_config(struct intel_encoder *encoder,
+				  struct intel_crtc_state *pipe_config)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(&encoder->base);
+	u32 tmp, flags = 0;
+
+	pipe_config->output_types |= BIT(INTEL_OUTPUT_LVDS);
+
+	tmp = intel_de_read(dev_priv, lvds_encoder->reg);
+	if (tmp & LVDS_HSYNC_POLARITY)
+		flags |= DRM_MODE_FLAG_NHSYNC;
+	else
+		flags |= DRM_MODE_FLAG_PHSYNC;
+	if (tmp & LVDS_VSYNC_POLARITY)
+		flags |= DRM_MODE_FLAG_NVSYNC;
+	else
+		flags |= DRM_MODE_FLAG_PVSYNC;
+
+	pipe_config->hw.adjusted_mode.flags |= flags;
+
+	if (DISPLAY_VER(dev_priv) < 5)
+		pipe_config->gmch_pfit.lvds_border_bits =
+			tmp & LVDS_BORDER_ENABLE;
+
+	/* gen2/3 store dither state in pfit control, needs to match */
+	if (DISPLAY_VER(dev_priv) < 4) {
+		tmp = intel_de_read(dev_priv, PFIT_CONTROL);
+
+		pipe_config->gmch_pfit.control |= tmp & PANEL_8TO6_DITHER_ENABLE;
+	}
+
+	pipe_config->hw.adjusted_mode.crtc_clock = pipe_config->port_clock;
+}
+
+static void intel_lvds_pps_get_hw_state(struct drm_i915_private *dev_priv,
+					struct intel_lvds_pps *pps)
+{
+	u32 val;
+
+	pps->powerdown_on_reset = intel_de_read(dev_priv, PP_CONTROL(0)) & PANEL_POWER_RESET;
+
+	val = intel_de_read(dev_priv, PP_ON_DELAYS(0));
+	pps->port = REG_FIELD_GET(PANEL_PORT_SELECT_MASK, val);
+	pps->t1_t2 = REG_FIELD_GET(PANEL_POWER_UP_DELAY_MASK, val);
+	pps->t5 = REG_FIELD_GET(PANEL_LIGHT_ON_DELAY_MASK, val);
+
+	val = intel_de_read(dev_priv, PP_OFF_DELAYS(0));
+	pps->t3 = REG_FIELD_GET(PANEL_POWER_DOWN_DELAY_MASK, val);
+	pps->tx = REG_FIELD_GET(PANEL_LIGHT_OFF_DELAY_MASK, val);
+
+	val = intel_de_read(dev_priv, PP_DIVISOR(0));
+	pps->divider = REG_FIELD_GET(PP_REFERENCE_DIVIDER_MASK, val);
+	val = REG_FIELD_GET(PANEL_POWER_CYCLE_DELAY_MASK, val);
+	/*
+	 * Remove the BSpec specified +1 (100ms) offset that accounts for a
+	 * too short power-cycle delay due to the asynchronous programming of
+	 * the register.
+	 */
+	if (val)
+		val--;
+	/* Convert from 100ms to 100us units */
+	pps->t4 = val * 1000;
+
+	if (DISPLAY_VER(dev_priv) <= 4 &&
+	    pps->t1_t2 == 0 && pps->t5 == 0 && pps->t3 == 0 && pps->tx == 0) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Panel power timings uninitialized, "
+			    "setting defaults\n");
+		/* Set T2 to 40ms and T5 to 200ms in 100 usec units */
+		pps->t1_t2 = 40 * 10;
+		pps->t5 = 200 * 10;
+		/* Set T3 to 35ms and Tx to 200ms in 100 usec units */
+		pps->t3 = 35 * 10;
+		pps->tx = 200 * 10;
+	}
+
+	drm_dbg(&dev_priv->drm, "LVDS PPS:t1+t2 %d t3 %d t4 %d t5 %d tx %d "
+		"divider %d port %d powerdown_on_reset %d\n",
+		pps->t1_t2, pps->t3, pps->t4, pps->t5, pps->tx,
+		pps->divider, pps->port, pps->powerdown_on_reset);
+}
+
+static void intel_lvds_pps_init_hw(struct drm_i915_private *dev_priv,
+				   struct intel_lvds_pps *pps)
+{
+	u32 val;
+
+	val = intel_de_read(dev_priv, PP_CONTROL(0));
+	drm_WARN_ON(&dev_priv->drm,
+		    (val & PANEL_UNLOCK_MASK) != PANEL_UNLOCK_REGS);
+	if (pps->powerdown_on_reset)
+		val |= PANEL_POWER_RESET;
+	intel_de_write(dev_priv, PP_CONTROL(0), val);
+
+	intel_de_write(dev_priv, PP_ON_DELAYS(0),
+		       REG_FIELD_PREP(PANEL_PORT_SELECT_MASK, pps->port) | REG_FIELD_PREP(PANEL_POWER_UP_DELAY_MASK, pps->t1_t2) | REG_FIELD_PREP(PANEL_LIGHT_ON_DELAY_MASK, pps->t5));
+
+	intel_de_write(dev_priv, PP_OFF_DELAYS(0),
+		       REG_FIELD_PREP(PANEL_POWER_DOWN_DELAY_MASK, pps->t3) | REG_FIELD_PREP(PANEL_LIGHT_OFF_DELAY_MASK, pps->tx));
+
+	intel_de_write(dev_priv, PP_DIVISOR(0),
+		       REG_FIELD_PREP(PP_REFERENCE_DIVIDER_MASK, pps->divider) | REG_FIELD_PREP(PANEL_POWER_CYCLE_DELAY_MASK, DIV_ROUND_UP(pps->t4, 1000) + 1));
+}
+
+static void intel_pre_enable_lvds(struct intel_atomic_state *state,
+				  struct intel_encoder *encoder,
+				  const struct intel_crtc_state *pipe_config,
+				  const struct drm_connector_state *conn_state)
+{
+	struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(&encoder->base);
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+	const struct drm_display_mode *adjusted_mode = &pipe_config->hw.adjusted_mode;
+	enum pipe pipe = crtc->pipe;
+	u32 temp;
+
+	if (HAS_PCH_SPLIT(dev_priv)) {
+		assert_fdi_rx_pll_disabled(dev_priv, pipe);
+		assert_shared_dpll_disabled(dev_priv,
+					    pipe_config->shared_dpll);
+	} else {
+		assert_pll_disabled(dev_priv, pipe);
+	}
+
+	intel_lvds_pps_init_hw(dev_priv, &lvds_encoder->init_pps);
+
+	temp = lvds_encoder->init_lvds_val;
+	temp |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP;
+
+	if (HAS_PCH_CPT(dev_priv)) {
+		temp &= ~LVDS_PIPE_SEL_MASK_CPT;
+		temp |= LVDS_PIPE_SEL_CPT(pipe);
+	} else {
+		temp &= ~LVDS_PIPE_SEL_MASK;
+		temp |= LVDS_PIPE_SEL(pipe);
+	}
+
+	/* set the corresponsding LVDS_BORDER bit */
+	temp &= ~LVDS_BORDER_ENABLE;
+	temp |= pipe_config->gmch_pfit.lvds_border_bits;
+
+	/*
+	 * Set the B0-B3 data pairs corresponding to whether we're going to
+	 * set the DPLLs for dual-channel mode or not.
+	 */
+	if (lvds_encoder->is_dual_link)
+		temp |= LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP;
+	else
+		temp &= ~(LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP);
+
+	/*
+	 * It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
+	 * appropriately here, but we need to look more thoroughly into how
+	 * panels behave in the two modes. For now, let's just maintain the
+	 * value we got from the BIOS.
+	 */
+	temp &= ~LVDS_A3_POWER_MASK;
+	temp |= lvds_encoder->a3_power;
+
+	/*
+	 * Set the dithering flag on LVDS as needed, note that there is no
+	 * special lvds dither control bit on pch-split platforms, dithering is
+	 * only controlled through the PIPECONF reg.
+	 */
+	if (DISPLAY_VER(dev_priv) == 4) {
+		/*
+		 * Bspec wording suggests that LVDS port dithering only exists
+		 * for 18bpp panels.
+		 */
+		if (pipe_config->dither && pipe_config->pipe_bpp == 18)
+			temp |= LVDS_ENABLE_DITHER;
+		else
+			temp &= ~LVDS_ENABLE_DITHER;
+	}
+	temp &= ~(LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY);
+	if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
+		temp |= LVDS_HSYNC_POLARITY;
+	if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
+		temp |= LVDS_VSYNC_POLARITY;
+
+	intel_de_write(dev_priv, lvds_encoder->reg, temp);
+}
+
+/*
+ * Sets the power state for the panel.
+ */
+static void intel_enable_lvds(struct intel_atomic_state *state,
+			      struct intel_encoder *encoder,
+			      const struct intel_crtc_state *pipe_config,
+			      const struct drm_connector_state *conn_state)
+{
+	struct drm_device *dev = encoder->base.dev;
+	struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(&encoder->base);
+	struct drm_i915_private *dev_priv = to_i915(dev);
+
+	intel_de_write(dev_priv, lvds_encoder->reg,
+		       intel_de_read(dev_priv, lvds_encoder->reg) | LVDS_PORT_EN);
+
+	intel_de_write(dev_priv, PP_CONTROL(0),
+		       intel_de_read(dev_priv, PP_CONTROL(0)) | PANEL_POWER_ON);
+	intel_de_posting_read(dev_priv, lvds_encoder->reg);
+
+	if (intel_de_wait_for_set(dev_priv, PP_STATUS(0), PP_ON, 5000))
+		drm_err(&dev_priv->drm,
+			"timed out waiting for panel to power on\n");
+
+	intel_backlight_enable(pipe_config, conn_state);
+}
+
+static void intel_disable_lvds(struct intel_atomic_state *state,
+			       struct intel_encoder *encoder,
+			       const struct intel_crtc_state *old_crtc_state,
+			       const struct drm_connector_state *old_conn_state)
+{
+	struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(&encoder->base);
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+
+	intel_de_write(dev_priv, PP_CONTROL(0),
+		       intel_de_read(dev_priv, PP_CONTROL(0)) & ~PANEL_POWER_ON);
+	if (intel_de_wait_for_clear(dev_priv, PP_STATUS(0), PP_ON, 1000))
+		drm_err(&dev_priv->drm,
+			"timed out waiting for panel to power off\n");
+
+	intel_de_write(dev_priv, lvds_encoder->reg,
+		       intel_de_read(dev_priv, lvds_encoder->reg) & ~LVDS_PORT_EN);
+	intel_de_posting_read(dev_priv, lvds_encoder->reg);
+}
+
+static void gmch_disable_lvds(struct intel_atomic_state *state,
+			      struct intel_encoder *encoder,
+			      const struct intel_crtc_state *old_crtc_state,
+			      const struct drm_connector_state *old_conn_state)
+
+{
+	intel_backlight_disable(old_conn_state);
+
+	intel_disable_lvds(state, encoder, old_crtc_state, old_conn_state);
+}
+
+static void pch_disable_lvds(struct intel_atomic_state *state,
+			     struct intel_encoder *encoder,
+			     const struct intel_crtc_state *old_crtc_state,
+			     const struct drm_connector_state *old_conn_state)
+{
+	intel_backlight_disable(old_conn_state);
+}
+
+static void pch_post_disable_lvds(struct intel_atomic_state *state,
+				  struct intel_encoder *encoder,
+				  const struct intel_crtc_state *old_crtc_state,
+				  const struct drm_connector_state *old_conn_state)
+{
+	intel_disable_lvds(state, encoder, old_crtc_state, old_conn_state);
+}
+
+static void intel_lvds_shutdown(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+
+	if (intel_de_wait_for_clear(dev_priv, PP_STATUS(0), PP_CYCLE_DELAY_ACTIVE, 5000))
+		drm_err(&dev_priv->drm,
+			"timed out waiting for panel power cycle delay\n");
+}
+
+static enum drm_mode_status
+intel_lvds_mode_valid(struct drm_connector *connector,
+		      struct drm_display_mode *mode)
+{
+	struct intel_connector *intel_connector = to_intel_connector(connector);
+	struct drm_i915_private *i915 = to_i915(intel_connector->base.dev);
+	const struct drm_display_mode *fixed_mode =
+		intel_panel_fixed_mode(intel_connector, mode);
+	int max_pixclk = to_i915(connector->dev)->max_dotclk_freq;
+	enum drm_mode_status status;
+
+	status = intel_cpu_transcoder_mode_valid(i915, mode);
+	if (status != MODE_OK)
+		return status;
+
+	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
+		return MODE_NO_DBLESCAN;
+
+	status = intel_panel_mode_valid(intel_connector, mode);
+	if (status != MODE_OK)
+		return status;
+
+	if (fixed_mode->clock > max_pixclk)
+		return MODE_CLOCK_HIGH;
+
+	return MODE_OK;
+}
+
+static int intel_lvds_compute_config(struct intel_encoder *intel_encoder,
+				     struct intel_crtc_state *pipe_config,
+				     struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(intel_encoder->base.dev);
+	struct intel_lvds_encoder *lvds_encoder =
+		to_lvds_encoder(&intel_encoder->base);
+	struct intel_connector *intel_connector =
+		lvds_encoder->attached_connector;
+	struct drm_display_mode *adjusted_mode = &pipe_config->hw.adjusted_mode;
+	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+	unsigned int lvds_bpp;
+	int ret;
+
+	/* Should never happen!! */
+	if (DISPLAY_VER(dev_priv) < 4 && crtc->pipe == 0) {
+		drm_err(&dev_priv->drm, "Can't support LVDS on pipe A\n");
+		return -EINVAL;
+	}
+
+	if (lvds_encoder->a3_power == LVDS_A3_POWER_UP)
+		lvds_bpp = 8*3;
+	else
+		lvds_bpp = 6*3;
+
+	if (lvds_bpp != pipe_config->pipe_bpp && !pipe_config->bw_constrained) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "forcing display bpp (was %d) to LVDS (%d)\n",
+			    pipe_config->pipe_bpp, lvds_bpp);
+		pipe_config->pipe_bpp = lvds_bpp;
+	}
+
+	pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
+
+	/*
+	 * We have timings from the BIOS for the panel, put them in
+	 * to the adjusted mode.  The CRTC will be set up for this mode,
+	 * with the panel scaling set up to source from the H/VDisplay
+	 * of the original mode.
+	 */
+	ret = intel_panel_compute_config(intel_connector, adjusted_mode);
+	if (ret)
+		return ret;
+
+	if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)
+		return -EINVAL;
+
+	if (HAS_PCH_SPLIT(dev_priv))
+		pipe_config->has_pch_encoder = true;
+
+	ret = intel_panel_fitting(pipe_config, conn_state);
+	if (ret)
+		return ret;
+
+	/*
+	 * XXX: It would be nice to support lower refresh rates on the
+	 * panels to reduce power consumption, and perhaps match the
+	 * user's requested refresh rate.
+	 */
+
+	return 0;
+}
+
+/*
+ * Return the list of DDC modes if available, or the BIOS fixed mode otherwise.
+ */
+static int intel_lvds_get_modes(struct drm_connector *connector)
+{
+	struct intel_connector *intel_connector = to_intel_connector(connector);
+
+	/* use cached edid if we have one */
+	if (!IS_ERR_OR_NULL(intel_connector->edid))
+		return drm_add_edid_modes(connector, intel_connector->edid);
+
+	return intel_panel_get_modes(intel_connector);
+}
+
+static const struct drm_connector_helper_funcs intel_lvds_connector_helper_funcs = {
+	.get_modes = intel_lvds_get_modes,
+	.mode_valid = intel_lvds_mode_valid,
+	.atomic_check = intel_digital_connector_atomic_check,
+};
+
+static const struct drm_connector_funcs intel_lvds_connector_funcs = {
+	.detect = intel_panel_detect,
+	.fill_modes = drm_helper_probe_single_connector_modes,
+	.atomic_get_property = intel_digital_connector_atomic_get_property,
+	.atomic_set_property = intel_digital_connector_atomic_set_property,
+	.late_register = intel_connector_register,
+	.early_unregister = intel_connector_unregister,
+	.destroy = intel_connector_destroy,
+	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+	.atomic_duplicate_state = intel_digital_connector_duplicate_state,
+};
+
+static const struct drm_encoder_funcs intel_lvds_enc_funcs = {
+	.destroy = intel_encoder_destroy,
+};
+
+static int intel_no_lvds_dmi_callback(const struct dmi_system_id *id)
+{
+	DRM_INFO("Skipping LVDS initialization for %s\n", id->ident);
+	return 1;
+}
+
+/* These systems claim to have LVDS, but really don't */
+static const struct dmi_system_id intel_no_lvds[] = {
+	{
+		.callback = intel_no_lvds_dmi_callback,
+		.ident = "Apple Mac Mini (Core series)",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Apple"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Macmini1,1"),
+		},
+	},
+	{
+		.callback = intel_no_lvds_dmi_callback,
+		.ident = "Apple Mac Mini (Core 2 series)",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Apple"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Macmini2,1"),
+		},
+	},
+	{
+		.callback = intel_no_lvds_dmi_callback,
+		.ident = "MSI IM-945GSE-A",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "MSI"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "A9830IMS"),
+		},
+	},
+	{
+		.callback = intel_no_lvds_dmi_callback,
+		.ident = "Dell Studio Hybrid",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Studio Hybrid 140g"),
+		},
+	},
+	{
+		.callback = intel_no_lvds_dmi_callback,
+		.ident = "Dell OptiPlex FX170",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex FX170"),
+		},
+	},
+	{
+		.callback = intel_no_lvds_dmi_callback,
+		.ident = "AOpen Mini PC",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "AOpen"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "i965GMx-IF"),
+		},
+	},
+	{
+		.callback = intel_no_lvds_dmi_callback,
+		.ident = "AOpen Mini PC MP915",
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"),
+			DMI_MATCH(DMI_BOARD_NAME, "i915GMx-F"),
+		},
+	},
+	{
+		.callback = intel_no_lvds_dmi_callback,
+		.ident = "AOpen i915GMm-HFS",
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"),
+			DMI_MATCH(DMI_BOARD_NAME, "i915GMm-HFS"),
+		},
+	},
+	{
+		.callback = intel_no_lvds_dmi_callback,
+                .ident = "AOpen i45GMx-I",
+                .matches = {
+                        DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"),
+                        DMI_MATCH(DMI_BOARD_NAME, "i45GMx-I"),
+                },
+        },
+	{
+		.callback = intel_no_lvds_dmi_callback,
+		.ident = "Aopen i945GTt-VFA",
+		.matches = {
+			DMI_MATCH(DMI_PRODUCT_VERSION, "AO00001JW"),
+		},
+	},
+	{
+		.callback = intel_no_lvds_dmi_callback,
+		.ident = "Clientron U800",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Clientron"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "U800"),
+		},
+	},
+	{
+                .callback = intel_no_lvds_dmi_callback,
+                .ident = "Clientron E830",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "Clientron"),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "E830"),
+                },
+        },
+        {
+		.callback = intel_no_lvds_dmi_callback,
+		.ident = "Asus EeeBox PC EB1007",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer INC."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "EB1007"),
+		},
+	},
+	{
+		.callback = intel_no_lvds_dmi_callback,
+		.ident = "Asus AT5NM10T-I",
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
+			DMI_MATCH(DMI_BOARD_NAME, "AT5NM10T-I"),
+		},
+	},
+	{
+		.callback = intel_no_lvds_dmi_callback,
+		.ident = "Hewlett-Packard HP t5740",
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
+			DMI_MATCH(DMI_PRODUCT_NAME, " t5740"),
+		},
+	},
+	{
+		.callback = intel_no_lvds_dmi_callback,
+		.ident = "Hewlett-Packard t5745",
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "hp t5745"),
+		},
+	},
+	{
+		.callback = intel_no_lvds_dmi_callback,
+		.ident = "Hewlett-Packard st5747",
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "hp st5747"),
+		},
+	},
+	{
+		.callback = intel_no_lvds_dmi_callback,
+		.ident = "MSI Wind Box DC500",
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "MICRO-STAR INTERNATIONAL CO., LTD"),
+			DMI_MATCH(DMI_BOARD_NAME, "MS-7469"),
+		},
+	},
+	{
+		.callback = intel_no_lvds_dmi_callback,
+		.ident = "Gigabyte GA-D525TUD",
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "Gigabyte Technology Co., Ltd."),
+			DMI_MATCH(DMI_BOARD_NAME, "D525TUD"),
+		},
+	},
+	{
+		.callback = intel_no_lvds_dmi_callback,
+		.ident = "Supermicro X7SPA-H",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Supermicro"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "X7SPA-H"),
+		},
+	},
+	{
+		.callback = intel_no_lvds_dmi_callback,
+		.ident = "Fujitsu Esprimo Q900",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Q900"),
+		},
+	},
+	{
+		.callback = intel_no_lvds_dmi_callback,
+		.ident = "Intel D410PT",
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "Intel"),
+			DMI_MATCH(DMI_BOARD_NAME, "D410PT"),
+		},
+	},
+	{
+		.callback = intel_no_lvds_dmi_callback,
+		.ident = "Intel D425KT",
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "Intel"),
+			DMI_EXACT_MATCH(DMI_BOARD_NAME, "D425KT"),
+		},
+	},
+	{
+		.callback = intel_no_lvds_dmi_callback,
+		.ident = "Intel D510MO",
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "Intel"),
+			DMI_EXACT_MATCH(DMI_BOARD_NAME, "D510MO"),
+		},
+	},
+	{
+		.callback = intel_no_lvds_dmi_callback,
+		.ident = "Intel D525MW",
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "Intel"),
+			DMI_EXACT_MATCH(DMI_BOARD_NAME, "D525MW"),
+		},
+	},
+	{
+		.callback = intel_no_lvds_dmi_callback,
+		.ident = "Radiant P845",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Radiant Systems Inc"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "P845"),
+		},
+	},
+
+	{ }	/* terminating entry */
+};
+
+static int intel_dual_link_lvds_callback(const struct dmi_system_id *id)
+{
+	DRM_INFO("Forcing lvds to dual link mode on %s\n", id->ident);
+	return 1;
+}
+
+static const struct dmi_system_id intel_dual_link_lvds[] = {
+	{
+		.callback = intel_dual_link_lvds_callback,
+		.ident = "Apple MacBook Pro 15\" (2010)",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro6,2"),
+		},
+	},
+	{
+		.callback = intel_dual_link_lvds_callback,
+		.ident = "Apple MacBook Pro 15\" (2011)",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro8,2"),
+		},
+	},
+	{
+		.callback = intel_dual_link_lvds_callback,
+		.ident = "Apple MacBook Pro 15\" (2012)",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro9,1"),
+		},
+	},
+	{ }	/* terminating entry */
+};
+
+struct intel_encoder *intel_get_lvds_encoder(struct drm_i915_private *dev_priv)
+{
+	struct intel_encoder *encoder;
+
+	for_each_intel_encoder(&dev_priv->drm, encoder) {
+		if (encoder->type == INTEL_OUTPUT_LVDS)
+			return encoder;
+	}
+
+	return NULL;
+}
+
+bool intel_is_dual_link_lvds(struct drm_i915_private *dev_priv)
+{
+	struct intel_encoder *encoder = intel_get_lvds_encoder(dev_priv);
+
+	return encoder && to_lvds_encoder(&encoder->base)->is_dual_link;
+}
+
+static bool compute_is_dual_link_lvds(struct intel_lvds_encoder *lvds_encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(lvds_encoder->base.base.dev);
+	struct intel_connector *connector = lvds_encoder->attached_connector;
+	const struct drm_display_mode *fixed_mode =
+		intel_panel_preferred_fixed_mode(connector);
+	unsigned int val;
+
+	/* use the module option value if specified */
+	if (dev_priv->params.lvds_channel_mode > 0)
+		return dev_priv->params.lvds_channel_mode == 2;
+
+	/* single channel LVDS is limited to 112 MHz */
+	if (fixed_mode->clock > 112999)
+		return true;
+
+	if (dmi_check_system(intel_dual_link_lvds))
+		return true;
+
+	/*
+	 * BIOS should set the proper LVDS register value at boot, but
+	 * in reality, it doesn't set the value when the lid is closed;
+	 * we need to check "the value to be set" in VBT when LVDS
+	 * register is uninitialized.
+	 */
+	val = intel_de_read(dev_priv, lvds_encoder->reg);
+	if (HAS_PCH_CPT(dev_priv))
+		val &= ~(LVDS_DETECTED | LVDS_PIPE_SEL_MASK_CPT);
+	else
+		val &= ~(LVDS_DETECTED | LVDS_PIPE_SEL_MASK);
+	if (val == 0)
+		val = connector->panel.vbt.bios_lvds_val;
+
+	return (val & LVDS_CLKB_POWER_MASK) == LVDS_CLKB_POWER_UP;
+}
+
+/**
+ * intel_lvds_init - setup LVDS connectors on this device
+ * @dev_priv: i915 device
+ *
+ * Create the connector, register the LVDS DDC bus, and try to figure out what
+ * modes we can display on the LVDS panel (if present).
+ */
+void intel_lvds_init(struct drm_i915_private *dev_priv)
+{
+	struct drm_device *dev = &dev_priv->drm;
+	struct intel_lvds_encoder *lvds_encoder;
+	struct intel_encoder *intel_encoder;
+	struct intel_connector *intel_connector;
+	struct drm_connector *connector;
+	struct drm_encoder *encoder;
+	struct edid *edid;
+	i915_reg_t lvds_reg;
+	u32 lvds;
+	u8 pin;
+	u32 allowed_scalers;
+
+	/* Skip init on machines we know falsely report LVDS */
+	if (dmi_check_system(intel_no_lvds)) {
+		drm_WARN(dev, !dev_priv->display.vbt.int_lvds_support,
+			 "Useless DMI match. Internal LVDS support disabled by VBT\n");
+		return;
+	}
+
+	if (!dev_priv->display.vbt.int_lvds_support) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Internal LVDS support disabled by VBT\n");
+		return;
+	}
+
+	if (HAS_PCH_SPLIT(dev_priv))
+		lvds_reg = PCH_LVDS;
+	else
+		lvds_reg = LVDS;
+
+	lvds = intel_de_read(dev_priv, lvds_reg);
+
+	if (HAS_PCH_SPLIT(dev_priv)) {
+		if ((lvds & LVDS_DETECTED) == 0)
+			return;
+	}
+
+	pin = GMBUS_PIN_PANEL;
+	if (!intel_bios_is_lvds_present(dev_priv, &pin)) {
+		if ((lvds & LVDS_PORT_EN) == 0) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "LVDS is not present in VBT\n");
+			return;
+		}
+		drm_dbg_kms(&dev_priv->drm,
+			    "LVDS is not present in VBT, but enabled anyway\n");
+	}
+
+	lvds_encoder = kzalloc(sizeof(*lvds_encoder), GFP_KERNEL);
+	if (!lvds_encoder)
+		return;
+
+	intel_connector = intel_connector_alloc();
+	if (!intel_connector) {
+		kfree(lvds_encoder);
+		return;
+	}
+
+	lvds_encoder->attached_connector = intel_connector;
+
+	intel_encoder = &lvds_encoder->base;
+	encoder = &intel_encoder->base;
+	connector = &intel_connector->base;
+	drm_connector_init(dev, &intel_connector->base, &intel_lvds_connector_funcs,
+			   DRM_MODE_CONNECTOR_LVDS);
+
+	drm_encoder_init(dev, &intel_encoder->base, &intel_lvds_enc_funcs,
+			 DRM_MODE_ENCODER_LVDS, "LVDS");
+
+	intel_encoder->enable = intel_enable_lvds;
+	intel_encoder->pre_enable = intel_pre_enable_lvds;
+	intel_encoder->compute_config = intel_lvds_compute_config;
+	if (HAS_PCH_SPLIT(dev_priv)) {
+		intel_encoder->disable = pch_disable_lvds;
+		intel_encoder->post_disable = pch_post_disable_lvds;
+	} else {
+		intel_encoder->disable = gmch_disable_lvds;
+	}
+	intel_encoder->get_hw_state = intel_lvds_get_hw_state;
+	intel_encoder->get_config = intel_lvds_get_config;
+	intel_encoder->update_pipe = intel_backlight_update;
+	intel_encoder->shutdown = intel_lvds_shutdown;
+	intel_connector->get_hw_state = intel_connector_get_hw_state;
+
+	intel_connector_attach_encoder(intel_connector, intel_encoder);
+
+	intel_encoder->type = INTEL_OUTPUT_LVDS;
+	intel_encoder->power_domain = POWER_DOMAIN_PORT_OTHER;
+	intel_encoder->port = PORT_NONE;
+	intel_encoder->cloneable = 0;
+	if (DISPLAY_VER(dev_priv) < 4)
+		intel_encoder->pipe_mask = BIT(PIPE_B);
+	else
+		intel_encoder->pipe_mask = ~0;
+
+	drm_connector_helper_add(connector, &intel_lvds_connector_helper_funcs);
+	connector->display_info.subpixel_order = SubPixelHorizontalRGB;
+	connector->interlace_allowed = false;
+	connector->doublescan_allowed = false;
+
+	lvds_encoder->reg = lvds_reg;
+
+	/* create the scaling mode property */
+	allowed_scalers = BIT(DRM_MODE_SCALE_ASPECT);
+	allowed_scalers |= BIT(DRM_MODE_SCALE_FULLSCREEN);
+	allowed_scalers |= BIT(DRM_MODE_SCALE_CENTER);
+	drm_connector_attach_scaling_mode_property(connector, allowed_scalers);
+	connector->state->scaling_mode = DRM_MODE_SCALE_ASPECT;
+
+	intel_lvds_pps_get_hw_state(dev_priv, &lvds_encoder->init_pps);
+	lvds_encoder->init_lvds_val = lvds;
+
+	/*
+	 * LVDS discovery:
+	 * 1) check for EDID on DDC
+	 * 2) check for VBT data
+	 * 3) check to see if LVDS is already on
+	 *    if none of the above, no panel
+	 */
+
+	/*
+	 * Attempt to get the fixed panel mode from DDC.  Assume that the
+	 * preferred mode is the right one.
+	 */
+	mutex_lock(&dev->mode_config.mutex);
+	if (vga_switcheroo_handler_flags() & VGA_SWITCHEROO_CAN_SWITCH_DDC)
+		edid = drm_get_edid_switcheroo(connector,
+				    intel_gmbus_get_adapter(dev_priv, pin));
+	else
+		edid = drm_get_edid(connector,
+				    intel_gmbus_get_adapter(dev_priv, pin));
+	if (edid) {
+		if (drm_add_edid_modes(connector, edid)) {
+			drm_connector_update_edid_property(connector,
+								edid);
+		} else {
+			kfree(edid);
+			edid = ERR_PTR(-EINVAL);
+		}
+	} else {
+		edid = ERR_PTR(-ENOENT);
+	}
+	intel_connector->edid = edid;
+
+	intel_bios_init_panel_late(dev_priv, &intel_connector->panel, NULL,
+				   IS_ERR(edid) ? NULL : edid);
+
+	/* Try EDID first */
+	intel_panel_add_edid_fixed_modes(intel_connector,
+					 intel_connector->panel.vbt.drrs_type != DRRS_TYPE_NONE);
+
+	/* Failed to get EDID, what about VBT? */
+	if (!intel_panel_preferred_fixed_mode(intel_connector))
+		intel_panel_add_vbt_lfp_fixed_mode(intel_connector);
+
+	/*
+	 * If we didn't get a fixed mode from EDID or VBT, try checking
+	 * if the panel is already turned on.  If so, assume that
+	 * whatever is currently programmed is the correct mode.
+	 */
+	if (!intel_panel_preferred_fixed_mode(intel_connector))
+		intel_panel_add_encoder_fixed_mode(intel_connector, intel_encoder);
+
+	mutex_unlock(&dev->mode_config.mutex);
+
+	/* If we still don't have a mode after all that, give up. */
+	if (!intel_panel_preferred_fixed_mode(intel_connector))
+		goto failed;
+
+	intel_panel_init(intel_connector);
+
+	intel_backlight_setup(intel_connector, INVALID_PIPE);
+
+	lvds_encoder->is_dual_link = compute_is_dual_link_lvds(lvds_encoder);
+	drm_dbg_kms(&dev_priv->drm, "detected %s-link lvds configuration\n",
+		    lvds_encoder->is_dual_link ? "dual" : "single");
+
+	lvds_encoder->a3_power = lvds & LVDS_A3_POWER_MASK;
+
+	return;
+
+failed:
+	drm_dbg_kms(&dev_priv->drm, "No LVDS modes found, disabling.\n");
+	drm_connector_cleanup(connector);
+	drm_encoder_cleanup(encoder);
+	kfree(lvds_encoder);
+	intel_connector_free(intel_connector);
+	return;
+}
diff --git a/drivers/gpu/drm/i915/display/intel_lvds.h b/drivers/gpu/drm/i915/display/intel_lvds.h
new file mode 100644
index 000000000..9d3372dc5
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_lvds.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_LVDS_H__
+#define __INTEL_LVDS_H__
+
+#include <linux/types.h>
+
+#include "i915_reg_defs.h"
+
+enum pipe;
+struct drm_i915_private;
+
+bool intel_lvds_port_enabled(struct drm_i915_private *dev_priv,
+			     i915_reg_t lvds_reg, enum pipe *pipe);
+void intel_lvds_init(struct drm_i915_private *dev_priv);
+struct intel_encoder *intel_get_lvds_encoder(struct drm_i915_private *dev_priv);
+bool intel_is_dual_link_lvds(struct drm_i915_private *dev_priv);
+
+#endif /* __INTEL_LVDS_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_modeset_setup.c b/drivers/gpu/drm/i915/display/intel_modeset_setup.c
new file mode 100644
index 000000000..cbfabd58b
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_modeset_setup.c
@@ -0,0 +1,735 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2022 Intel Corporation
+ *
+ * Read out the current hardware modeset state, and sanitize it to the current
+ * state.
+ */
+
+#include <drm/drm_atomic_uapi.h>
+#include <drm/drm_atomic_state_helper.h>
+
+#include "i915_drv.h"
+#include "intel_atomic.h"
+#include "intel_bw.h"
+#include "intel_color.h"
+#include "intel_crtc.h"
+#include "intel_crtc_state_dump.h"
+#include "intel_ddi.h"
+#include "intel_de.h"
+#include "intel_display.h"
+#include "intel_display_power.h"
+#include "intel_display_types.h"
+#include "intel_modeset_setup.h"
+#include "intel_pch_display.h"
+#include "intel_pm.h"
+#include "skl_watermark.h"
+
+static void intel_crtc_disable_noatomic(struct intel_crtc *crtc,
+					struct drm_modeset_acquire_ctx *ctx)
+{
+	struct intel_encoder *encoder;
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	struct intel_bw_state *bw_state =
+		to_intel_bw_state(i915->display.bw.obj.state);
+	struct intel_cdclk_state *cdclk_state =
+		to_intel_cdclk_state(i915->display.cdclk.obj.state);
+	struct intel_dbuf_state *dbuf_state =
+		to_intel_dbuf_state(i915->display.dbuf.obj.state);
+	struct intel_crtc_state *crtc_state =
+		to_intel_crtc_state(crtc->base.state);
+	struct intel_plane *plane;
+	struct drm_atomic_state *state;
+	struct intel_crtc_state *temp_crtc_state;
+	enum pipe pipe = crtc->pipe;
+	int ret;
+
+	if (!crtc_state->hw.active)
+		return;
+
+	for_each_intel_plane_on_crtc(&i915->drm, crtc, plane) {
+		const struct intel_plane_state *plane_state =
+			to_intel_plane_state(plane->base.state);
+
+		if (plane_state->uapi.visible)
+			intel_plane_disable_noatomic(crtc, plane);
+	}
+
+	state = drm_atomic_state_alloc(&i915->drm);
+	if (!state) {
+		drm_dbg_kms(&i915->drm,
+			    "failed to disable [CRTC:%d:%s], out of memory",
+			    crtc->base.base.id, crtc->base.name);
+		return;
+	}
+
+	state->acquire_ctx = ctx;
+
+	/* Everything's already locked, -EDEADLK can't happen. */
+	temp_crtc_state = intel_atomic_get_crtc_state(state, crtc);
+	ret = drm_atomic_add_affected_connectors(state, &crtc->base);
+
+	drm_WARN_ON(&i915->drm, IS_ERR(temp_crtc_state) || ret);
+
+	i915->display.funcs.display->crtc_disable(to_intel_atomic_state(state), crtc);
+
+	drm_atomic_state_put(state);
+
+	drm_dbg_kms(&i915->drm,
+		    "[CRTC:%d:%s] hw state adjusted, was enabled, now disabled\n",
+		    crtc->base.base.id, crtc->base.name);
+
+	crtc->active = false;
+	crtc->base.enabled = false;
+
+	drm_WARN_ON(&i915->drm,
+		    drm_atomic_set_mode_for_crtc(&crtc_state->uapi, NULL) < 0);
+	crtc_state->uapi.active = false;
+	crtc_state->uapi.connector_mask = 0;
+	crtc_state->uapi.encoder_mask = 0;
+	intel_crtc_free_hw_state(crtc_state);
+	memset(&crtc_state->hw, 0, sizeof(crtc_state->hw));
+
+	for_each_encoder_on_crtc(&i915->drm, &crtc->base, encoder)
+		encoder->base.crtc = NULL;
+
+	intel_fbc_disable(crtc);
+	intel_update_watermarks(i915);
+	intel_disable_shared_dpll(crtc_state);
+
+	intel_display_power_put_all_in_set(i915, &crtc->enabled_power_domains);
+
+	cdclk_state->min_cdclk[pipe] = 0;
+	cdclk_state->min_voltage_level[pipe] = 0;
+	cdclk_state->active_pipes &= ~BIT(pipe);
+
+	dbuf_state->active_pipes &= ~BIT(pipe);
+
+	bw_state->data_rate[pipe] = 0;
+	bw_state->num_active_planes[pipe] = 0;
+}
+
+static void intel_modeset_update_connector_atomic_state(struct drm_i915_private *i915)
+{
+	struct intel_connector *connector;
+	struct drm_connector_list_iter conn_iter;
+
+	drm_connector_list_iter_begin(&i915->drm, &conn_iter);
+	for_each_intel_connector_iter(connector, &conn_iter) {
+		struct drm_connector_state *conn_state = connector->base.state;
+		struct intel_encoder *encoder =
+			to_intel_encoder(connector->base.encoder);
+
+		if (conn_state->crtc)
+			drm_connector_put(&connector->base);
+
+		if (encoder) {
+			struct intel_crtc *crtc =
+				to_intel_crtc(encoder->base.crtc);
+			const struct intel_crtc_state *crtc_state =
+				to_intel_crtc_state(crtc->base.state);
+
+			conn_state->best_encoder = &encoder->base;
+			conn_state->crtc = &crtc->base;
+			conn_state->max_bpc = (crtc_state->pipe_bpp ?: 24) / 3;
+
+			drm_connector_get(&connector->base);
+		} else {
+			conn_state->best_encoder = NULL;
+			conn_state->crtc = NULL;
+		}
+	}
+	drm_connector_list_iter_end(&conn_iter);
+}
+
+static void intel_crtc_copy_hw_to_uapi_state(struct intel_crtc_state *crtc_state)
+{
+	if (intel_crtc_is_bigjoiner_slave(crtc_state))
+		return;
+
+	crtc_state->uapi.enable = crtc_state->hw.enable;
+	crtc_state->uapi.active = crtc_state->hw.active;
+	drm_WARN_ON(crtc_state->uapi.crtc->dev,
+		    drm_atomic_set_mode_for_crtc(&crtc_state->uapi, &crtc_state->hw.mode) < 0);
+
+	crtc_state->uapi.adjusted_mode = crtc_state->hw.adjusted_mode;
+	crtc_state->uapi.scaling_filter = crtc_state->hw.scaling_filter;
+
+	drm_property_replace_blob(&crtc_state->uapi.degamma_lut,
+				  crtc_state->hw.degamma_lut);
+	drm_property_replace_blob(&crtc_state->uapi.gamma_lut,
+				  crtc_state->hw.gamma_lut);
+	drm_property_replace_blob(&crtc_state->uapi.ctm,
+				  crtc_state->hw.ctm);
+}
+
+static void
+intel_sanitize_plane_mapping(struct drm_i915_private *i915)
+{
+	struct intel_crtc *crtc;
+
+	if (DISPLAY_VER(i915) >= 4)
+		return;
+
+	for_each_intel_crtc(&i915->drm, crtc) {
+		struct intel_plane *plane =
+			to_intel_plane(crtc->base.primary);
+		struct intel_crtc *plane_crtc;
+		enum pipe pipe;
+
+		if (!plane->get_hw_state(plane, &pipe))
+			continue;
+
+		if (pipe == crtc->pipe)
+			continue;
+
+		drm_dbg_kms(&i915->drm,
+			    "[PLANE:%d:%s] attached to the wrong pipe, disabling plane\n",
+			    plane->base.base.id, plane->base.name);
+
+		plane_crtc = intel_crtc_for_pipe(i915, pipe);
+		intel_plane_disable_noatomic(plane_crtc, plane);
+	}
+}
+
+static bool intel_crtc_has_encoders(struct intel_crtc *crtc)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct intel_encoder *encoder;
+
+	for_each_encoder_on_crtc(dev, &crtc->base, encoder)
+		return true;
+
+	return false;
+}
+
+static struct intel_connector *intel_encoder_find_connector(struct intel_encoder *encoder)
+{
+	struct drm_device *dev = encoder->base.dev;
+	struct intel_connector *connector;
+
+	for_each_connector_on_encoder(dev, &encoder->base, connector)
+		return connector;
+
+	return NULL;
+}
+
+static void intel_sanitize_fifo_underrun_reporting(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+
+	if (!crtc_state->hw.active && !HAS_GMCH(i915))
+		return;
+
+	/*
+	 * We start out with underrun reporting disabled to avoid races.
+	 * For correct bookkeeping mark this on active crtcs.
+	 *
+	 * Also on gmch platforms we dont have any hardware bits to
+	 * disable the underrun reporting. Which means we need to start
+	 * out with underrun reporting disabled also on inactive pipes,
+	 * since otherwise we'll complain about the garbage we read when
+	 * e.g. coming up after runtime pm.
+	 *
+	 * No protection against concurrent access is required - at
+	 * worst a fifo underrun happens which also sets this to false.
+	 */
+	crtc->cpu_fifo_underrun_disabled = true;
+
+	/*
+	 * We track the PCH trancoder underrun reporting state
+	 * within the crtc. With crtc for pipe A housing the underrun
+	 * reporting state for PCH transcoder A, crtc for pipe B housing
+	 * it for PCH transcoder B, etc. LPT-H has only PCH transcoder A,
+	 * and marking underrun reporting as disabled for the non-existing
+	 * PCH transcoders B and C would prevent enabling the south
+	 * error interrupt (see cpt_can_enable_serr_int()).
+	 */
+	if (intel_has_pch_trancoder(i915, crtc->pipe))
+		crtc->pch_fifo_underrun_disabled = true;
+}
+
+static void intel_sanitize_crtc(struct intel_crtc *crtc,
+				struct drm_modeset_acquire_ctx *ctx)
+{
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	struct intel_crtc_state *crtc_state = to_intel_crtc_state(crtc->base.state);
+
+	if (crtc_state->hw.active) {
+		struct intel_plane *plane;
+
+		/* Disable everything but the primary plane */
+		for_each_intel_plane_on_crtc(&i915->drm, crtc, plane) {
+			const struct intel_plane_state *plane_state =
+				to_intel_plane_state(plane->base.state);
+
+			if (plane_state->uapi.visible &&
+			    plane->base.type != DRM_PLANE_TYPE_PRIMARY)
+				intel_plane_disable_noatomic(crtc, plane);
+		}
+
+		/* Disable any background color/etc. set by the BIOS */
+		intel_color_commit_noarm(crtc_state);
+		intel_color_commit_arm(crtc_state);
+	}
+
+	/*
+	 * Adjust the state of the output pipe according to whether we have
+	 * active connectors/encoders.
+	 */
+	if (crtc_state->hw.active && !intel_crtc_has_encoders(crtc) &&
+	    !intel_crtc_is_bigjoiner_slave(crtc_state))
+		intel_crtc_disable_noatomic(crtc, ctx);
+}
+
+static bool has_bogus_dpll_config(const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+
+	/*
+	 * Some SNB BIOSen (eg. ASUS K53SV) are known to misprogram
+	 * the hardware when a high res displays plugged in. DPLL P
+	 * divider is zero, and the pipe timings are bonkers. We'll
+	 * try to disable everything in that case.
+	 *
+	 * FIXME would be nice to be able to sanitize this state
+	 * without several WARNs, but for now let's take the easy
+	 * road.
+	 */
+	return IS_SANDYBRIDGE(i915) &&
+		crtc_state->hw.active &&
+		crtc_state->shared_dpll &&
+		crtc_state->port_clock == 0;
+}
+
+static void intel_sanitize_encoder(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	struct intel_connector *connector;
+	struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
+	struct intel_crtc_state *crtc_state = crtc ?
+		to_intel_crtc_state(crtc->base.state) : NULL;
+
+	/*
+	 * We need to check both for a crtc link (meaning that the encoder is
+	 * active and trying to read from a pipe) and the pipe itself being
+	 * active.
+	 */
+	bool has_active_crtc = crtc_state &&
+		crtc_state->hw.active;
+
+	if (crtc_state && has_bogus_dpll_config(crtc_state)) {
+		drm_dbg_kms(&i915->drm,
+			    "BIOS has misprogrammed the hardware. Disabling pipe %c\n",
+			    pipe_name(crtc->pipe));
+		has_active_crtc = false;
+	}
+
+	connector = intel_encoder_find_connector(encoder);
+	if (connector && !has_active_crtc) {
+		drm_dbg_kms(&i915->drm,
+			    "[ENCODER:%d:%s] has active connectors but no active pipe!\n",
+			    encoder->base.base.id,
+			    encoder->base.name);
+
+		/*
+		 * Connector is active, but has no active pipe. This is fallout
+		 * from our resume register restoring. Disable the encoder
+		 * manually again.
+		 */
+		if (crtc_state) {
+			struct drm_encoder *best_encoder;
+
+			drm_dbg_kms(&i915->drm,
+				    "[ENCODER:%d:%s] manually disabled\n",
+				    encoder->base.base.id,
+				    encoder->base.name);
+
+			/* avoid oopsing in case the hooks consult best_encoder */
+			best_encoder = connector->base.state->best_encoder;
+			connector->base.state->best_encoder = &encoder->base;
+
+			/* FIXME NULL atomic state passed! */
+			if (encoder->disable)
+				encoder->disable(NULL, encoder, crtc_state,
+						 connector->base.state);
+			if (encoder->post_disable)
+				encoder->post_disable(NULL, encoder, crtc_state,
+						      connector->base.state);
+
+			connector->base.state->best_encoder = best_encoder;
+		}
+		encoder->base.crtc = NULL;
+
+		/*
+		 * Inconsistent output/port/pipe state happens presumably due to
+		 * a bug in one of the get_hw_state functions. Or someplace else
+		 * in our code, like the register restore mess on resume. Clamp
+		 * things to off as a safer default.
+		 */
+		connector->base.dpms = DRM_MODE_DPMS_OFF;
+		connector->base.encoder = NULL;
+	}
+
+	/* notify opregion of the sanitized encoder state */
+	intel_opregion_notify_encoder(encoder, connector && has_active_crtc);
+
+	if (HAS_DDI(i915))
+		intel_ddi_sanitize_encoder_pll_mapping(encoder);
+}
+
+/* FIXME read out full plane state for all planes */
+static void readout_plane_state(struct drm_i915_private *i915)
+{
+	struct intel_plane *plane;
+	struct intel_crtc *crtc;
+
+	for_each_intel_plane(&i915->drm, plane) {
+		struct intel_plane_state *plane_state =
+			to_intel_plane_state(plane->base.state);
+		struct intel_crtc_state *crtc_state;
+		enum pipe pipe = PIPE_A;
+		bool visible;
+
+		visible = plane->get_hw_state(plane, &pipe);
+
+		crtc = intel_crtc_for_pipe(i915, pipe);
+		crtc_state = to_intel_crtc_state(crtc->base.state);
+
+		intel_set_plane_visible(crtc_state, plane_state, visible);
+
+		drm_dbg_kms(&i915->drm,
+			    "[PLANE:%d:%s] hw state readout: %s, pipe %c\n",
+			    plane->base.base.id, plane->base.name,
+			    str_enabled_disabled(visible), pipe_name(pipe));
+	}
+
+	for_each_intel_crtc(&i915->drm, crtc) {
+		struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+
+		intel_plane_fixup_bitmasks(crtc_state);
+	}
+}
+
+static void intel_modeset_readout_hw_state(struct drm_i915_private *i915)
+{
+	struct intel_cdclk_state *cdclk_state =
+		to_intel_cdclk_state(i915->display.cdclk.obj.state);
+	struct intel_dbuf_state *dbuf_state =
+		to_intel_dbuf_state(i915->display.dbuf.obj.state);
+	enum pipe pipe;
+	struct intel_crtc *crtc;
+	struct intel_encoder *encoder;
+	struct intel_connector *connector;
+	struct drm_connector_list_iter conn_iter;
+	u8 active_pipes = 0;
+
+	for_each_intel_crtc(&i915->drm, crtc) {
+		struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+
+		__drm_atomic_helper_crtc_destroy_state(&crtc_state->uapi);
+		intel_crtc_free_hw_state(crtc_state);
+		intel_crtc_state_reset(crtc_state, crtc);
+
+		intel_crtc_get_pipe_config(crtc_state);
+
+		crtc_state->hw.enable = crtc_state->hw.active;
+
+		crtc->base.enabled = crtc_state->hw.enable;
+		crtc->active = crtc_state->hw.active;
+
+		if (crtc_state->hw.active)
+			active_pipes |= BIT(crtc->pipe);
+
+		drm_dbg_kms(&i915->drm,
+			    "[CRTC:%d:%s] hw state readout: %s\n",
+			    crtc->base.base.id, crtc->base.name,
+			    str_enabled_disabled(crtc_state->hw.active));
+	}
+
+	cdclk_state->active_pipes = active_pipes;
+	dbuf_state->active_pipes = active_pipes;
+
+	readout_plane_state(i915);
+
+	for_each_intel_encoder(&i915->drm, encoder) {
+		struct intel_crtc_state *crtc_state = NULL;
+
+		pipe = 0;
+
+		if (encoder->get_hw_state(encoder, &pipe)) {
+			crtc = intel_crtc_for_pipe(i915, pipe);
+			crtc_state = to_intel_crtc_state(crtc->base.state);
+
+			encoder->base.crtc = &crtc->base;
+			intel_encoder_get_config(encoder, crtc_state);
+
+			/* read out to slave crtc as well for bigjoiner */
+			if (crtc_state->bigjoiner_pipes) {
+				struct intel_crtc *slave_crtc;
+
+				/* encoder should read be linked to bigjoiner master */
+				WARN_ON(intel_crtc_is_bigjoiner_slave(crtc_state));
+
+				for_each_intel_crtc_in_pipe_mask(&i915->drm, slave_crtc,
+								 intel_crtc_bigjoiner_slave_pipes(crtc_state)) {
+					struct intel_crtc_state *slave_crtc_state;
+
+					slave_crtc_state = to_intel_crtc_state(slave_crtc->base.state);
+					intel_encoder_get_config(encoder, slave_crtc_state);
+				}
+			}
+		} else {
+			encoder->base.crtc = NULL;
+		}
+
+		if (encoder->sync_state)
+			encoder->sync_state(encoder, crtc_state);
+
+		drm_dbg_kms(&i915->drm,
+			    "[ENCODER:%d:%s] hw state readout: %s, pipe %c\n",
+			    encoder->base.base.id, encoder->base.name,
+			    str_enabled_disabled(encoder->base.crtc),
+			    pipe_name(pipe));
+	}
+
+	intel_dpll_readout_hw_state(i915);
+
+	drm_connector_list_iter_begin(&i915->drm, &conn_iter);
+	for_each_intel_connector_iter(connector, &conn_iter) {
+		if (connector->get_hw_state(connector)) {
+			struct intel_crtc_state *crtc_state;
+			struct intel_crtc *crtc;
+
+			connector->base.dpms = DRM_MODE_DPMS_ON;
+
+			encoder = intel_attached_encoder(connector);
+			connector->base.encoder = &encoder->base;
+
+			crtc = to_intel_crtc(encoder->base.crtc);
+			crtc_state = crtc ? to_intel_crtc_state(crtc->base.state) : NULL;
+
+			if (crtc_state && crtc_state->hw.active) {
+				/*
+				 * This has to be done during hardware readout
+				 * because anything calling .crtc_disable may
+				 * rely on the connector_mask being accurate.
+				 */
+				crtc_state->uapi.connector_mask |=
+					drm_connector_mask(&connector->base);
+				crtc_state->uapi.encoder_mask |=
+					drm_encoder_mask(&encoder->base);
+			}
+		} else {
+			connector->base.dpms = DRM_MODE_DPMS_OFF;
+			connector->base.encoder = NULL;
+		}
+		drm_dbg_kms(&i915->drm,
+			    "[CONNECTOR:%d:%s] hw state readout: %s\n",
+			    connector->base.base.id, connector->base.name,
+			    str_enabled_disabled(connector->base.encoder));
+	}
+	drm_connector_list_iter_end(&conn_iter);
+
+	for_each_intel_crtc(&i915->drm, crtc) {
+		struct intel_bw_state *bw_state =
+			to_intel_bw_state(i915->display.bw.obj.state);
+		struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+		struct intel_plane *plane;
+		int min_cdclk = 0;
+
+		if (crtc_state->hw.active) {
+			/*
+			 * The initial mode needs to be set in order to keep
+			 * the atomic core happy. It wants a valid mode if the
+			 * crtc's enabled, so we do the above call.
+			 *
+			 * But we don't set all the derived state fully, hence
+			 * set a flag to indicate that a full recalculation is
+			 * needed on the next commit.
+			 */
+			crtc_state->inherited = true;
+
+			intel_crtc_update_active_timings(crtc_state);
+
+			intel_crtc_copy_hw_to_uapi_state(crtc_state);
+		}
+
+		for_each_intel_plane_on_crtc(&i915->drm, crtc, plane) {
+			const struct intel_plane_state *plane_state =
+				to_intel_plane_state(plane->base.state);
+
+			/*
+			 * FIXME don't have the fb yet, so can't
+			 * use intel_plane_data_rate() :(
+			 */
+			if (plane_state->uapi.visible)
+				crtc_state->data_rate[plane->id] =
+					4 * crtc_state->pixel_rate;
+			/*
+			 * FIXME don't have the fb yet, so can't
+			 * use plane->min_cdclk() :(
+			 */
+			if (plane_state->uapi.visible && plane->min_cdclk) {
+				if (crtc_state->double_wide || DISPLAY_VER(i915) >= 10)
+					crtc_state->min_cdclk[plane->id] =
+						DIV_ROUND_UP(crtc_state->pixel_rate, 2);
+				else
+					crtc_state->min_cdclk[plane->id] =
+						crtc_state->pixel_rate;
+			}
+			drm_dbg_kms(&i915->drm,
+				    "[PLANE:%d:%s] min_cdclk %d kHz\n",
+				    plane->base.base.id, plane->base.name,
+				    crtc_state->min_cdclk[plane->id]);
+		}
+
+		if (crtc_state->hw.active) {
+			min_cdclk = intel_crtc_compute_min_cdclk(crtc_state);
+			if (drm_WARN_ON(&i915->drm, min_cdclk < 0))
+				min_cdclk = 0;
+		}
+
+		cdclk_state->min_cdclk[crtc->pipe] = min_cdclk;
+		cdclk_state->min_voltage_level[crtc->pipe] =
+			crtc_state->min_voltage_level;
+
+		intel_bw_crtc_update(bw_state, crtc_state);
+	}
+}
+
+static void
+get_encoder_power_domains(struct drm_i915_private *i915)
+{
+	struct intel_encoder *encoder;
+
+	for_each_intel_encoder(&i915->drm, encoder) {
+		struct intel_crtc_state *crtc_state;
+
+		if (!encoder->get_power_domains)
+			continue;
+
+		/*
+		 * MST-primary and inactive encoders don't have a crtc state
+		 * and neither of these require any power domain references.
+		 */
+		if (!encoder->base.crtc)
+			continue;
+
+		crtc_state = to_intel_crtc_state(encoder->base.crtc->state);
+		encoder->get_power_domains(encoder, crtc_state);
+	}
+}
+
+static void intel_early_display_was(struct drm_i915_private *i915)
+{
+	/*
+	 * Display WA #1185 WaDisableDARBFClkGating:glk,icl,ehl,tgl
+	 * Also known as Wa_14010480278.
+	 */
+	if (IS_DISPLAY_VER(i915, 10, 12))
+		intel_de_write(i915, GEN9_CLKGATE_DIS_0,
+			       intel_de_read(i915, GEN9_CLKGATE_DIS_0) | DARBF_GATING_DIS);
+
+	if (IS_HASWELL(i915)) {
+		/*
+		 * WaRsPkgCStateDisplayPMReq:hsw
+		 * System hang if this isn't done before disabling all planes!
+		 */
+		intel_de_write(i915, CHICKEN_PAR1_1,
+			       intel_de_read(i915, CHICKEN_PAR1_1) | FORCE_ARB_IDLE_PLANES);
+	}
+
+	if (IS_KABYLAKE(i915) || IS_COFFEELAKE(i915) || IS_COMETLAKE(i915)) {
+		/* Display WA #1142:kbl,cfl,cml */
+		intel_de_rmw(i915, CHICKEN_PAR1_1,
+			     KBL_ARB_FILL_SPARE_22, KBL_ARB_FILL_SPARE_22);
+		intel_de_rmw(i915, CHICKEN_MISC_2,
+			     KBL_ARB_FILL_SPARE_13 | KBL_ARB_FILL_SPARE_14,
+			     KBL_ARB_FILL_SPARE_14);
+	}
+}
+
+void intel_modeset_setup_hw_state(struct drm_i915_private *i915,
+				  struct drm_modeset_acquire_ctx *ctx)
+{
+	struct intel_encoder *encoder;
+	struct intel_crtc *crtc;
+	intel_wakeref_t wakeref;
+
+	wakeref = intel_display_power_get(i915, POWER_DOMAIN_INIT);
+
+	intel_early_display_was(i915);
+	intel_modeset_readout_hw_state(i915);
+
+	/* HW state is read out, now we need to sanitize this mess. */
+	get_encoder_power_domains(i915);
+
+	intel_pch_sanitize(i915);
+
+	/*
+	 * intel_sanitize_plane_mapping() may need to do vblank
+	 * waits, so we need vblank interrupts restored beforehand.
+	 */
+	for_each_intel_crtc(&i915->drm, crtc) {
+		struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+
+		intel_sanitize_fifo_underrun_reporting(crtc_state);
+
+		drm_crtc_vblank_reset(&crtc->base);
+
+		if (crtc_state->hw.active)
+			intel_crtc_vblank_on(crtc_state);
+	}
+
+	intel_fbc_sanitize(i915);
+
+	intel_sanitize_plane_mapping(i915);
+
+	for_each_intel_encoder(&i915->drm, encoder)
+		intel_sanitize_encoder(encoder);
+
+	for_each_intel_crtc(&i915->drm, crtc) {
+		struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+
+		intel_sanitize_crtc(crtc, ctx);
+		intel_crtc_state_dump(crtc_state, NULL, "setup_hw_state");
+	}
+
+	intel_modeset_update_connector_atomic_state(i915);
+
+	intel_dpll_sanitize_state(i915);
+
+	if (IS_G4X(i915)) {
+		g4x_wm_get_hw_state(i915);
+		g4x_wm_sanitize(i915);
+	} else if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915)) {
+		vlv_wm_get_hw_state(i915);
+		vlv_wm_sanitize(i915);
+	} else if (DISPLAY_VER(i915) >= 9) {
+		skl_wm_get_hw_state(i915);
+		skl_wm_sanitize(i915);
+	} else if (HAS_PCH_SPLIT(i915)) {
+		ilk_wm_get_hw_state(i915);
+	}
+
+	for_each_intel_crtc(&i915->drm, crtc) {
+		struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+		struct intel_power_domain_mask put_domains;
+
+		intel_modeset_get_crtc_power_domains(crtc_state, &put_domains);
+		if (drm_WARN_ON(&i915->drm, !bitmap_empty(put_domains.bits, POWER_DOMAIN_NUM)))
+			intel_modeset_put_crtc_power_domains(crtc, &put_domains);
+	}
+
+	intel_display_power_put(i915, POWER_DOMAIN_INIT, wakeref);
+
+	intel_power_domains_sanitize_state(i915);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_modeset_setup.h b/drivers/gpu/drm/i915/display/intel_modeset_setup.h
new file mode 100644
index 000000000..3beff67b3
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_modeset_setup.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#ifndef __INTEL_MODESET_SETUP_H__
+#define __INTEL_MODESET_SETUP_H__
+
+struct drm_i915_private;
+struct drm_modeset_acquire_ctx;
+
+void intel_modeset_setup_hw_state(struct drm_i915_private *i915,
+				  struct drm_modeset_acquire_ctx *ctx);
+
+#endif /* __INTEL_MODESET_SETUP_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_modeset_verify.c b/drivers/gpu/drm/i915/display/intel_modeset_verify.c
new file mode 100644
index 000000000..0fdcf2e6d
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_modeset_verify.c
@@ -0,0 +1,246 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2022 Intel Corporation
+ *
+ * High level crtc/connector/encoder modeset state verification.
+ */
+
+#include <drm/drm_atomic_state_helper.h>
+
+#include "i915_drv.h"
+#include "intel_atomic.h"
+#include "intel_crtc.h"
+#include "intel_crtc_state_dump.h"
+#include "intel_display.h"
+#include "intel_display_types.h"
+#include "intel_fdi.h"
+#include "intel_modeset_verify.h"
+#include "intel_snps_phy.h"
+#include "skl_watermark.h"
+
+/*
+ * Cross check the actual hw state with our own modeset state tracking (and its
+ * internal consistency).
+ */
+static void intel_connector_verify_state(struct intel_crtc_state *crtc_state,
+					 struct drm_connector_state *conn_state)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+
+	drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s]\n",
+		    connector->base.base.id, connector->base.name);
+
+	if (connector->get_hw_state(connector)) {
+		struct intel_encoder *encoder = intel_attached_encoder(connector);
+
+		I915_STATE_WARN(!crtc_state,
+				"connector enabled without attached crtc\n");
+
+		if (!crtc_state)
+			return;
+
+		I915_STATE_WARN(!crtc_state->hw.active,
+				"connector is active, but attached crtc isn't\n");
+
+		if (!encoder || encoder->type == INTEL_OUTPUT_DP_MST)
+			return;
+
+		I915_STATE_WARN(conn_state->best_encoder != &encoder->base,
+				"atomic encoder doesn't match attached encoder\n");
+
+		I915_STATE_WARN(conn_state->crtc != encoder->base.crtc,
+				"attached encoder crtc differs from connector crtc\n");
+	} else {
+		I915_STATE_WARN(crtc_state && crtc_state->hw.active,
+				"attached crtc is active, but connector isn't\n");
+		I915_STATE_WARN(!crtc_state && conn_state->best_encoder,
+				"best encoder set without crtc!\n");
+	}
+}
+
+static void
+verify_connector_state(struct intel_atomic_state *state,
+		       struct intel_crtc *crtc)
+{
+	struct drm_connector *connector;
+	struct drm_connector_state *new_conn_state;
+	int i;
+
+	for_each_new_connector_in_state(&state->base, connector, new_conn_state, i) {
+		struct drm_encoder *encoder = connector->encoder;
+		struct intel_crtc_state *crtc_state = NULL;
+
+		if (new_conn_state->crtc != &crtc->base)
+			continue;
+
+		if (crtc)
+			crtc_state = intel_atomic_get_new_crtc_state(state, crtc);
+
+		intel_connector_verify_state(crtc_state, new_conn_state);
+
+		I915_STATE_WARN(new_conn_state->best_encoder != encoder,
+				"connector's atomic encoder doesn't match legacy encoder\n");
+	}
+}
+
+static void intel_pipe_config_sanity_check(struct drm_i915_private *dev_priv,
+					   const struct intel_crtc_state *pipe_config)
+{
+	if (pipe_config->has_pch_encoder) {
+		int fdi_dotclock = intel_dotclock_calculate(intel_fdi_link_freq(dev_priv, pipe_config),
+							    &pipe_config->fdi_m_n);
+		int dotclock = pipe_config->hw.adjusted_mode.crtc_clock;
+
+		/*
+		 * FDI already provided one idea for the dotclock.
+		 * Yell if the encoder disagrees. Allow for slight
+		 * rounding differences.
+		 */
+		drm_WARN(&dev_priv->drm, abs(fdi_dotclock - dotclock) > 1,
+			 "FDI dotclock and encoder dotclock mismatch, fdi: %i, encoder: %i\n",
+			 fdi_dotclock, dotclock);
+	}
+}
+
+static void
+verify_encoder_state(struct drm_i915_private *dev_priv, struct intel_atomic_state *state)
+{
+	struct intel_encoder *encoder;
+	struct drm_connector *connector;
+	struct drm_connector_state *old_conn_state, *new_conn_state;
+	int i;
+
+	for_each_intel_encoder(&dev_priv->drm, encoder) {
+		bool enabled = false, found = false;
+		enum pipe pipe;
+
+		drm_dbg_kms(&dev_priv->drm, "[ENCODER:%d:%s]\n",
+			    encoder->base.base.id,
+			    encoder->base.name);
+
+		for_each_oldnew_connector_in_state(&state->base, connector, old_conn_state,
+						   new_conn_state, i) {
+			if (old_conn_state->best_encoder == &encoder->base)
+				found = true;
+
+			if (new_conn_state->best_encoder != &encoder->base)
+				continue;
+
+			found = true;
+			enabled = true;
+
+			I915_STATE_WARN(new_conn_state->crtc !=
+					encoder->base.crtc,
+					"connector's crtc doesn't match encoder crtc\n");
+		}
+
+		if (!found)
+			continue;
+
+		I915_STATE_WARN(!!encoder->base.crtc != enabled,
+				"encoder's enabled state mismatch (expected %i, found %i)\n",
+				!!encoder->base.crtc, enabled);
+
+		if (!encoder->base.crtc) {
+			bool active;
+
+			active = encoder->get_hw_state(encoder, &pipe);
+			I915_STATE_WARN(active,
+					"encoder detached but still enabled on pipe %c.\n",
+					pipe_name(pipe));
+		}
+	}
+}
+
+static void
+verify_crtc_state(struct intel_crtc *crtc,
+		  struct intel_crtc_state *old_crtc_state,
+		  struct intel_crtc_state *new_crtc_state)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_encoder *encoder;
+	struct intel_crtc_state *pipe_config = old_crtc_state;
+	struct drm_atomic_state *state = old_crtc_state->uapi.state;
+	struct intel_crtc *master_crtc;
+
+	__drm_atomic_helper_crtc_destroy_state(&old_crtc_state->uapi);
+	intel_crtc_free_hw_state(old_crtc_state);
+	intel_crtc_state_reset(old_crtc_state, crtc);
+	old_crtc_state->uapi.state = state;
+
+	drm_dbg_kms(&dev_priv->drm, "[CRTC:%d:%s]\n", crtc->base.base.id,
+		    crtc->base.name);
+
+	pipe_config->hw.enable = new_crtc_state->hw.enable;
+
+	intel_crtc_get_pipe_config(pipe_config);
+
+	/* we keep both pipes enabled on 830 */
+	if (IS_I830(dev_priv) && pipe_config->hw.active)
+		pipe_config->hw.active = new_crtc_state->hw.active;
+
+	I915_STATE_WARN(new_crtc_state->hw.active != pipe_config->hw.active,
+			"crtc active state doesn't match with hw state (expected %i, found %i)\n",
+			new_crtc_state->hw.active, pipe_config->hw.active);
+
+	I915_STATE_WARN(crtc->active != new_crtc_state->hw.active,
+			"transitional active state does not match atomic hw state (expected %i, found %i)\n",
+			new_crtc_state->hw.active, crtc->active);
+
+	master_crtc = intel_master_crtc(new_crtc_state);
+
+	for_each_encoder_on_crtc(dev, &master_crtc->base, encoder) {
+		enum pipe pipe;
+		bool active;
+
+		active = encoder->get_hw_state(encoder, &pipe);
+		I915_STATE_WARN(active != new_crtc_state->hw.active,
+				"[ENCODER:%i] active %i with crtc active %i\n",
+				encoder->base.base.id, active,
+				new_crtc_state->hw.active);
+
+		I915_STATE_WARN(active && master_crtc->pipe != pipe,
+				"Encoder connected to wrong pipe %c\n",
+				pipe_name(pipe));
+
+		if (active)
+			intel_encoder_get_config(encoder, pipe_config);
+	}
+
+	if (!new_crtc_state->hw.active)
+		return;
+
+	intel_pipe_config_sanity_check(dev_priv, pipe_config);
+
+	if (!intel_pipe_config_compare(new_crtc_state,
+				       pipe_config, false)) {
+		I915_STATE_WARN(1, "pipe state doesn't match!\n");
+		intel_crtc_state_dump(pipe_config, NULL, "hw state");
+		intel_crtc_state_dump(new_crtc_state, NULL, "sw state");
+	}
+}
+
+void intel_modeset_verify_crtc(struct intel_crtc *crtc,
+			       struct intel_atomic_state *state,
+			       struct intel_crtc_state *old_crtc_state,
+			       struct intel_crtc_state *new_crtc_state)
+{
+	if (!intel_crtc_needs_modeset(new_crtc_state) && !new_crtc_state->update_pipe)
+		return;
+
+	intel_wm_state_verify(crtc, new_crtc_state);
+	verify_connector_state(state, crtc);
+	verify_crtc_state(crtc, old_crtc_state, new_crtc_state);
+	intel_shared_dpll_state_verify(crtc, old_crtc_state, new_crtc_state);
+	intel_mpllb_state_verify(state, new_crtc_state);
+}
+
+void intel_modeset_verify_disabled(struct drm_i915_private *dev_priv,
+				   struct intel_atomic_state *state)
+{
+	verify_encoder_state(dev_priv, state);
+	verify_connector_state(state, NULL);
+	intel_shared_dpll_verify_disabled(dev_priv);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_modeset_verify.h b/drivers/gpu/drm/i915/display/intel_modeset_verify.h
new file mode 100644
index 000000000..2d6fbe4f7
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_modeset_verify.h
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#ifndef __INTEL_MODESET_VERIFY_H__
+#define __INTEL_MODESET_VERIFY_H__
+
+struct drm_i915_private;
+struct intel_atomic_state;
+struct intel_crtc;
+struct intel_crtc_state;
+
+void intel_modeset_verify_crtc(struct intel_crtc *crtc,
+			       struct intel_atomic_state *state,
+			       struct intel_crtc_state *old_crtc_state,
+			       struct intel_crtc_state *new_crtc_state);
+void intel_modeset_verify_disabled(struct drm_i915_private *dev_priv,
+				   struct intel_atomic_state *state);
+
+#endif /* __INTEL_MODESET_VERIFY_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_opregion.c b/drivers/gpu/drm/i915/display/intel_opregion.c
new file mode 100644
index 000000000..caa07ef34
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_opregion.c
@@ -0,0 +1,1250 @@
+/*
+ * Copyright 2008 Intel Corporation <hong.liu@intel.com>
+ * Copyright 2008 Red Hat <mjg@redhat.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial
+ * portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NON-INFRINGEMENT.  IN NO EVENT SHALL INTEL AND/OR ITS SUPPLIERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#include <linux/acpi.h>
+#include <linux/dmi.h>
+#include <linux/firmware.h>
+#include <acpi/video.h>
+
+#include <drm/drm_edid.h>
+
+#include "i915_drv.h"
+#include "intel_acpi.h"
+#include "intel_backlight.h"
+#include "intel_display_types.h"
+#include "intel_opregion.h"
+#include "intel_pci_config.h"
+
+#define OPREGION_HEADER_OFFSET 0
+#define OPREGION_ACPI_OFFSET   0x100
+#define   ACPI_CLID 0x01ac /* current lid state indicator */
+#define   ACPI_CDCK 0x01b0 /* current docking state indicator */
+#define OPREGION_SWSCI_OFFSET  0x200
+#define OPREGION_ASLE_OFFSET   0x300
+#define OPREGION_VBT_OFFSET    0x400
+#define OPREGION_ASLE_EXT_OFFSET	0x1C00
+
+#define OPREGION_SIGNATURE "IntelGraphicsMem"
+#define MBOX_ACPI		BIT(0)	/* Mailbox #1 */
+#define MBOX_SWSCI		BIT(1)	/* Mailbox #2 (obsolete from v2.x) */
+#define MBOX_ASLE		BIT(2)	/* Mailbox #3 */
+#define MBOX_ASLE_EXT		BIT(4)	/* Mailbox #5 */
+#define MBOX_BACKLIGHT		BIT(5)	/* Mailbox #2 (valid from v3.x) */
+
+#define PCON_HEADLESS_SKU	BIT(13)
+
+struct opregion_header {
+	u8 signature[16];
+	u32 size;
+	struct {
+		u8 rsvd;
+		u8 revision;
+		u8 minor;
+		u8 major;
+	}  __packed over;
+	u8 bios_ver[32];
+	u8 vbios_ver[16];
+	u8 driver_ver[16];
+	u32 mboxes;
+	u32 driver_model;
+	u32 pcon;
+	u8 dver[32];
+	u8 rsvd[124];
+} __packed;
+
+/* OpRegion mailbox #1: public ACPI methods */
+struct opregion_acpi {
+	u32 drdy;       /* driver readiness */
+	u32 csts;       /* notification status */
+	u32 cevt;       /* current event */
+	u8 rsvd1[20];
+	u32 didl[8];    /* supported display devices ID list */
+	u32 cpdl[8];    /* currently presented display list */
+	u32 cadl[8];    /* currently active display list */
+	u32 nadl[8];    /* next active devices list */
+	u32 aslp;       /* ASL sleep time-out */
+	u32 tidx;       /* toggle table index */
+	u32 chpd;       /* current hotplug enable indicator */
+	u32 clid;       /* current lid state*/
+	u32 cdck;       /* current docking state */
+	u32 sxsw;       /* Sx state resume */
+	u32 evts;       /* ASL supported events */
+	u32 cnot;       /* current OS notification */
+	u32 nrdy;       /* driver status */
+	u32 did2[7];	/* extended supported display devices ID list */
+	u32 cpd2[7];	/* extended attached display devices list */
+	u8 rsvd2[4];
+} __packed;
+
+/* OpRegion mailbox #2: SWSCI */
+struct opregion_swsci {
+	u32 scic;       /* SWSCI command|status|data */
+	u32 parm;       /* command parameters */
+	u32 dslp;       /* driver sleep time-out */
+	u8 rsvd[244];
+} __packed;
+
+/* OpRegion mailbox #3: ASLE */
+struct opregion_asle {
+	u32 ardy;       /* driver readiness */
+	u32 aslc;       /* ASLE interrupt command */
+	u32 tche;       /* technology enabled indicator */
+	u32 alsi;       /* current ALS illuminance reading */
+	u32 bclp;       /* backlight brightness to set */
+	u32 pfit;       /* panel fitting state */
+	u32 cblv;       /* current brightness level */
+	u16 bclm[20];   /* backlight level duty cycle mapping table */
+	u32 cpfm;       /* current panel fitting mode */
+	u32 epfm;       /* enabled panel fitting modes */
+	u8 plut[74];    /* panel LUT and identifier */
+	u32 pfmb;       /* PWM freq and min brightness */
+	u32 cddv;       /* color correction default values */
+	u32 pcft;       /* power conservation features */
+	u32 srot;       /* supported rotation angles */
+	u32 iuer;       /* IUER events */
+	u64 fdss;
+	u32 fdsp;
+	u32 stat;
+	u64 rvda;	/* Physical (2.0) or relative from opregion (2.1+)
+			 * address of raw VBT data. */
+	u32 rvds;	/* Size of raw vbt data */
+	u8 rsvd[58];
+} __packed;
+
+/* OpRegion mailbox #5: ASLE ext */
+struct opregion_asle_ext {
+	u32 phed;	/* Panel Header */
+	u8 bddc[256];	/* Panel EDID */
+	u8 rsvd[764];
+} __packed;
+
+/* Driver readiness indicator */
+#define ASLE_ARDY_READY		(1 << 0)
+#define ASLE_ARDY_NOT_READY	(0 << 0)
+
+/* ASLE Interrupt Command (ASLC) bits */
+#define ASLC_SET_ALS_ILLUM		(1 << 0)
+#define ASLC_SET_BACKLIGHT		(1 << 1)
+#define ASLC_SET_PFIT			(1 << 2)
+#define ASLC_SET_PWM_FREQ		(1 << 3)
+#define ASLC_SUPPORTED_ROTATION_ANGLES	(1 << 4)
+#define ASLC_BUTTON_ARRAY		(1 << 5)
+#define ASLC_CONVERTIBLE_INDICATOR	(1 << 6)
+#define ASLC_DOCKING_INDICATOR		(1 << 7)
+#define ASLC_ISCT_STATE_CHANGE		(1 << 8)
+#define ASLC_REQ_MSK			0x1ff
+/* response bits */
+#define ASLC_ALS_ILLUM_FAILED		(1 << 10)
+#define ASLC_BACKLIGHT_FAILED		(1 << 12)
+#define ASLC_PFIT_FAILED		(1 << 14)
+#define ASLC_PWM_FREQ_FAILED		(1 << 16)
+#define ASLC_ROTATION_ANGLES_FAILED	(1 << 18)
+#define ASLC_BUTTON_ARRAY_FAILED	(1 << 20)
+#define ASLC_CONVERTIBLE_FAILED		(1 << 22)
+#define ASLC_DOCKING_FAILED		(1 << 24)
+#define ASLC_ISCT_STATE_FAILED		(1 << 26)
+
+/* Technology enabled indicator */
+#define ASLE_TCHE_ALS_EN	(1 << 0)
+#define ASLE_TCHE_BLC_EN	(1 << 1)
+#define ASLE_TCHE_PFIT_EN	(1 << 2)
+#define ASLE_TCHE_PFMB_EN	(1 << 3)
+
+/* ASLE backlight brightness to set */
+#define ASLE_BCLP_VALID                (1<<31)
+#define ASLE_BCLP_MSK          (~(1<<31))
+
+/* ASLE panel fitting request */
+#define ASLE_PFIT_VALID         (1<<31)
+#define ASLE_PFIT_CENTER (1<<0)
+#define ASLE_PFIT_STRETCH_TEXT (1<<1)
+#define ASLE_PFIT_STRETCH_GFX (1<<2)
+
+/* PWM frequency and minimum brightness */
+#define ASLE_PFMB_BRIGHTNESS_MASK (0xff)
+#define ASLE_PFMB_BRIGHTNESS_VALID (1<<8)
+#define ASLE_PFMB_PWM_MASK (0x7ffffe00)
+#define ASLE_PFMB_PWM_VALID (1<<31)
+
+#define ASLE_CBLV_VALID         (1<<31)
+
+/* IUER */
+#define ASLE_IUER_DOCKING		(1 << 7)
+#define ASLE_IUER_CONVERTIBLE		(1 << 6)
+#define ASLE_IUER_ROTATION_LOCK_BTN	(1 << 4)
+#define ASLE_IUER_VOLUME_DOWN_BTN	(1 << 3)
+#define ASLE_IUER_VOLUME_UP_BTN		(1 << 2)
+#define ASLE_IUER_WINDOWS_BTN		(1 << 1)
+#define ASLE_IUER_POWER_BTN		(1 << 0)
+
+#define ASLE_PHED_EDID_VALID_MASK	0x3
+
+/* Software System Control Interrupt (SWSCI) */
+#define SWSCI_SCIC_INDICATOR		(1 << 0)
+#define SWSCI_SCIC_MAIN_FUNCTION_SHIFT	1
+#define SWSCI_SCIC_MAIN_FUNCTION_MASK	(0xf << 1)
+#define SWSCI_SCIC_SUB_FUNCTION_SHIFT	8
+#define SWSCI_SCIC_SUB_FUNCTION_MASK	(0xff << 8)
+#define SWSCI_SCIC_EXIT_PARAMETER_SHIFT	8
+#define SWSCI_SCIC_EXIT_PARAMETER_MASK	(0xff << 8)
+#define SWSCI_SCIC_EXIT_STATUS_SHIFT	5
+#define SWSCI_SCIC_EXIT_STATUS_MASK	(7 << 5)
+#define SWSCI_SCIC_EXIT_STATUS_SUCCESS	1
+
+#define SWSCI_FUNCTION_CODE(main, sub) \
+	((main) << SWSCI_SCIC_MAIN_FUNCTION_SHIFT | \
+	 (sub) << SWSCI_SCIC_SUB_FUNCTION_SHIFT)
+
+/* SWSCI: Get BIOS Data (GBDA) */
+#define SWSCI_GBDA			4
+#define SWSCI_GBDA_SUPPORTED_CALLS	SWSCI_FUNCTION_CODE(SWSCI_GBDA, 0)
+#define SWSCI_GBDA_REQUESTED_CALLBACKS	SWSCI_FUNCTION_CODE(SWSCI_GBDA, 1)
+#define SWSCI_GBDA_BOOT_DISPLAY_PREF	SWSCI_FUNCTION_CODE(SWSCI_GBDA, 4)
+#define SWSCI_GBDA_PANEL_DETAILS	SWSCI_FUNCTION_CODE(SWSCI_GBDA, 5)
+#define SWSCI_GBDA_TV_STANDARD		SWSCI_FUNCTION_CODE(SWSCI_GBDA, 6)
+#define SWSCI_GBDA_INTERNAL_GRAPHICS	SWSCI_FUNCTION_CODE(SWSCI_GBDA, 7)
+#define SWSCI_GBDA_SPREAD_SPECTRUM	SWSCI_FUNCTION_CODE(SWSCI_GBDA, 10)
+
+/* SWSCI: System BIOS Callbacks (SBCB) */
+#define SWSCI_SBCB			6
+#define SWSCI_SBCB_SUPPORTED_CALLBACKS	SWSCI_FUNCTION_CODE(SWSCI_SBCB, 0)
+#define SWSCI_SBCB_INIT_COMPLETION	SWSCI_FUNCTION_CODE(SWSCI_SBCB, 1)
+#define SWSCI_SBCB_PRE_HIRES_SET_MODE	SWSCI_FUNCTION_CODE(SWSCI_SBCB, 3)
+#define SWSCI_SBCB_POST_HIRES_SET_MODE	SWSCI_FUNCTION_CODE(SWSCI_SBCB, 4)
+#define SWSCI_SBCB_DISPLAY_SWITCH	SWSCI_FUNCTION_CODE(SWSCI_SBCB, 5)
+#define SWSCI_SBCB_SET_TV_FORMAT	SWSCI_FUNCTION_CODE(SWSCI_SBCB, 6)
+#define SWSCI_SBCB_ADAPTER_POWER_STATE	SWSCI_FUNCTION_CODE(SWSCI_SBCB, 7)
+#define SWSCI_SBCB_DISPLAY_POWER_STATE	SWSCI_FUNCTION_CODE(SWSCI_SBCB, 8)
+#define SWSCI_SBCB_SET_BOOT_DISPLAY	SWSCI_FUNCTION_CODE(SWSCI_SBCB, 9)
+#define SWSCI_SBCB_SET_PANEL_DETAILS	SWSCI_FUNCTION_CODE(SWSCI_SBCB, 10)
+#define SWSCI_SBCB_SET_INTERNAL_GFX	SWSCI_FUNCTION_CODE(SWSCI_SBCB, 11)
+#define SWSCI_SBCB_POST_HIRES_TO_DOS_FS	SWSCI_FUNCTION_CODE(SWSCI_SBCB, 16)
+#define SWSCI_SBCB_SUSPEND_RESUME	SWSCI_FUNCTION_CODE(SWSCI_SBCB, 17)
+#define SWSCI_SBCB_SET_SPREAD_SPECTRUM	SWSCI_FUNCTION_CODE(SWSCI_SBCB, 18)
+#define SWSCI_SBCB_POST_VBE_PM		SWSCI_FUNCTION_CODE(SWSCI_SBCB, 19)
+#define SWSCI_SBCB_ENABLE_DISABLE_AUDIO	SWSCI_FUNCTION_CODE(SWSCI_SBCB, 21)
+
+#define MAX_DSLP	1500
+
+static int check_swsci_function(struct drm_i915_private *i915, u32 function)
+{
+	struct opregion_swsci *swsci = i915->display.opregion.swsci;
+	u32 main_function, sub_function;
+
+	if (!swsci)
+		return -ENODEV;
+
+	main_function = (function & SWSCI_SCIC_MAIN_FUNCTION_MASK) >>
+		SWSCI_SCIC_MAIN_FUNCTION_SHIFT;
+	sub_function = (function & SWSCI_SCIC_SUB_FUNCTION_MASK) >>
+		SWSCI_SCIC_SUB_FUNCTION_SHIFT;
+
+	/* Check if we can call the function. See swsci_setup for details. */
+	if (main_function == SWSCI_SBCB) {
+		if ((i915->display.opregion.swsci_sbcb_sub_functions &
+		     (1 << sub_function)) == 0)
+			return -EINVAL;
+	} else if (main_function == SWSCI_GBDA) {
+		if ((i915->display.opregion.swsci_gbda_sub_functions &
+		     (1 << sub_function)) == 0)
+			return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int swsci(struct drm_i915_private *dev_priv,
+		 u32 function, u32 parm, u32 *parm_out)
+{
+	struct opregion_swsci *swsci = dev_priv->display.opregion.swsci;
+	struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
+	u32 scic, dslp;
+	u16 swsci_val;
+	int ret;
+
+	ret = check_swsci_function(dev_priv, function);
+	if (ret)
+		return ret;
+
+	/* Driver sleep timeout in ms. */
+	dslp = swsci->dslp;
+	if (!dslp) {
+		/* The spec says 2ms should be the default, but it's too small
+		 * for some machines. */
+		dslp = 50;
+	} else if (dslp > MAX_DSLP) {
+		/* Hey bios, trust must be earned. */
+		DRM_INFO_ONCE("ACPI BIOS requests an excessive sleep of %u ms, "
+			      "using %u ms instead\n", dslp, MAX_DSLP);
+		dslp = MAX_DSLP;
+	}
+
+	/* The spec tells us to do this, but we are the only user... */
+	scic = swsci->scic;
+	if (scic & SWSCI_SCIC_INDICATOR) {
+		drm_dbg(&dev_priv->drm, "SWSCI request already in progress\n");
+		return -EBUSY;
+	}
+
+	scic = function | SWSCI_SCIC_INDICATOR;
+
+	swsci->parm = parm;
+	swsci->scic = scic;
+
+	/* Ensure SCI event is selected and event trigger is cleared. */
+	pci_read_config_word(pdev, SWSCI, &swsci_val);
+	if (!(swsci_val & SWSCI_SCISEL) || (swsci_val & SWSCI_GSSCIE)) {
+		swsci_val |= SWSCI_SCISEL;
+		swsci_val &= ~SWSCI_GSSCIE;
+		pci_write_config_word(pdev, SWSCI, swsci_val);
+	}
+
+	/* Use event trigger to tell bios to check the mail. */
+	swsci_val |= SWSCI_GSSCIE;
+	pci_write_config_word(pdev, SWSCI, swsci_val);
+
+	/* Poll for the result. */
+#define C (((scic = swsci->scic) & SWSCI_SCIC_INDICATOR) == 0)
+	if (wait_for(C, dslp)) {
+		drm_dbg(&dev_priv->drm, "SWSCI request timed out\n");
+		return -ETIMEDOUT;
+	}
+
+	scic = (scic & SWSCI_SCIC_EXIT_STATUS_MASK) >>
+		SWSCI_SCIC_EXIT_STATUS_SHIFT;
+
+	/* Note: scic == 0 is an error! */
+	if (scic != SWSCI_SCIC_EXIT_STATUS_SUCCESS) {
+		drm_dbg(&dev_priv->drm, "SWSCI request error %u\n", scic);
+		return -EIO;
+	}
+
+	if (parm_out)
+		*parm_out = swsci->parm;
+
+	return 0;
+
+#undef C
+}
+
+#define DISPLAY_TYPE_CRT			0
+#define DISPLAY_TYPE_TV				1
+#define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL	2
+#define DISPLAY_TYPE_INTERNAL_FLAT_PANEL	3
+
+int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
+				  bool enable)
+{
+	struct drm_i915_private *dev_priv = to_i915(intel_encoder->base.dev);
+	u32 parm = 0;
+	u32 type = 0;
+	u32 port;
+	int ret;
+
+	/* don't care about old stuff for now */
+	if (!HAS_DDI(dev_priv))
+		return 0;
+
+	/* Avoid port out of bounds checks if SWSCI isn't there. */
+	ret = check_swsci_function(dev_priv, SWSCI_SBCB_DISPLAY_POWER_STATE);
+	if (ret)
+		return ret;
+
+	if (intel_encoder->type == INTEL_OUTPUT_DSI)
+		port = 0;
+	else
+		port = intel_encoder->port;
+
+	if (port == PORT_E)  {
+		port = 0;
+	} else {
+		parm |= 1 << port;
+		port++;
+	}
+
+	/*
+	 * The port numbering and mapping here is bizarre. The now-obsolete
+	 * swsci spec supports ports numbered [0..4]. Port E is handled as a
+	 * special case, but port F and beyond are not. The functionality is
+	 * supposed to be obsolete for new platforms. Just bail out if the port
+	 * number is out of bounds after mapping.
+	 */
+	if (port > 4) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "[ENCODER:%d:%s] port %c (index %u) out of bounds for display power state notification\n",
+			    intel_encoder->base.base.id, intel_encoder->base.name,
+			    port_name(intel_encoder->port), port);
+		return -EINVAL;
+	}
+
+	if (!enable)
+		parm |= 4 << 8;
+
+	switch (intel_encoder->type) {
+	case INTEL_OUTPUT_ANALOG:
+		type = DISPLAY_TYPE_CRT;
+		break;
+	case INTEL_OUTPUT_DDI:
+	case INTEL_OUTPUT_DP:
+	case INTEL_OUTPUT_HDMI:
+	case INTEL_OUTPUT_DP_MST:
+		type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL;
+		break;
+	case INTEL_OUTPUT_EDP:
+	case INTEL_OUTPUT_DSI:
+		type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL;
+		break;
+	default:
+		drm_WARN_ONCE(&dev_priv->drm, 1,
+			      "unsupported intel_encoder type %d\n",
+			      intel_encoder->type);
+		return -EINVAL;
+	}
+
+	parm |= type << (16 + port * 3);
+
+	return swsci(dev_priv, SWSCI_SBCB_DISPLAY_POWER_STATE, parm, NULL);
+}
+
+static const struct {
+	pci_power_t pci_power_state;
+	u32 parm;
+} power_state_map[] = {
+	{ PCI_D0,	0x00 },
+	{ PCI_D1,	0x01 },
+	{ PCI_D2,	0x02 },
+	{ PCI_D3hot,	0x04 },
+	{ PCI_D3cold,	0x04 },
+};
+
+int intel_opregion_notify_adapter(struct drm_i915_private *dev_priv,
+				  pci_power_t state)
+{
+	int i;
+
+	if (!HAS_DDI(dev_priv))
+		return 0;
+
+	for (i = 0; i < ARRAY_SIZE(power_state_map); i++) {
+		if (state == power_state_map[i].pci_power_state)
+			return swsci(dev_priv, SWSCI_SBCB_ADAPTER_POWER_STATE,
+				     power_state_map[i].parm, NULL);
+	}
+
+	return -EINVAL;
+}
+
+static u32 asle_set_backlight(struct drm_i915_private *dev_priv, u32 bclp)
+{
+	struct intel_connector *connector;
+	struct drm_connector_list_iter conn_iter;
+	struct opregion_asle *asle = dev_priv->display.opregion.asle;
+	struct drm_device *dev = &dev_priv->drm;
+
+	drm_dbg(&dev_priv->drm, "bclp = 0x%08x\n", bclp);
+
+	if (acpi_video_get_backlight_type() == acpi_backlight_native) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "opregion backlight request ignored\n");
+		return 0;
+	}
+
+	if (!(bclp & ASLE_BCLP_VALID))
+		return ASLC_BACKLIGHT_FAILED;
+
+	bclp &= ASLE_BCLP_MSK;
+	if (bclp > 255)
+		return ASLC_BACKLIGHT_FAILED;
+
+	drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
+
+	/*
+	 * Update backlight on all connectors that support backlight (usually
+	 * only one).
+	 */
+	drm_dbg_kms(&dev_priv->drm, "updating opregion backlight %d/255\n",
+		    bclp);
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	for_each_intel_connector_iter(connector, &conn_iter)
+		intel_backlight_set_acpi(connector->base.state, bclp, 255);
+	drm_connector_list_iter_end(&conn_iter);
+	asle->cblv = DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID;
+
+	drm_modeset_unlock(&dev->mode_config.connection_mutex);
+
+
+	return 0;
+}
+
+static u32 asle_set_als_illum(struct drm_i915_private *dev_priv, u32 alsi)
+{
+	/* alsi is the current ALS reading in lux. 0 indicates below sensor
+	   range, 0xffff indicates above sensor range. 1-0xfffe are valid */
+	drm_dbg(&dev_priv->drm, "Illum is not supported\n");
+	return ASLC_ALS_ILLUM_FAILED;
+}
+
+static u32 asle_set_pwm_freq(struct drm_i915_private *dev_priv, u32 pfmb)
+{
+	drm_dbg(&dev_priv->drm, "PWM freq is not supported\n");
+	return ASLC_PWM_FREQ_FAILED;
+}
+
+static u32 asle_set_pfit(struct drm_i915_private *dev_priv, u32 pfit)
+{
+	/* Panel fitting is currently controlled by the X code, so this is a
+	   noop until modesetting support works fully */
+	drm_dbg(&dev_priv->drm, "Pfit is not supported\n");
+	return ASLC_PFIT_FAILED;
+}
+
+static u32 asle_set_supported_rotation_angles(struct drm_i915_private *dev_priv, u32 srot)
+{
+	drm_dbg(&dev_priv->drm, "SROT is not supported\n");
+	return ASLC_ROTATION_ANGLES_FAILED;
+}
+
+static u32 asle_set_button_array(struct drm_i915_private *dev_priv, u32 iuer)
+{
+	if (!iuer)
+		drm_dbg(&dev_priv->drm,
+			"Button array event is not supported (nothing)\n");
+	if (iuer & ASLE_IUER_ROTATION_LOCK_BTN)
+		drm_dbg(&dev_priv->drm,
+			"Button array event is not supported (rotation lock)\n");
+	if (iuer & ASLE_IUER_VOLUME_DOWN_BTN)
+		drm_dbg(&dev_priv->drm,
+			"Button array event is not supported (volume down)\n");
+	if (iuer & ASLE_IUER_VOLUME_UP_BTN)
+		drm_dbg(&dev_priv->drm,
+			"Button array event is not supported (volume up)\n");
+	if (iuer & ASLE_IUER_WINDOWS_BTN)
+		drm_dbg(&dev_priv->drm,
+			"Button array event is not supported (windows)\n");
+	if (iuer & ASLE_IUER_POWER_BTN)
+		drm_dbg(&dev_priv->drm,
+			"Button array event is not supported (power)\n");
+
+	return ASLC_BUTTON_ARRAY_FAILED;
+}
+
+static u32 asle_set_convertible(struct drm_i915_private *dev_priv, u32 iuer)
+{
+	if (iuer & ASLE_IUER_CONVERTIBLE)
+		drm_dbg(&dev_priv->drm,
+			"Convertible is not supported (clamshell)\n");
+	else
+		drm_dbg(&dev_priv->drm,
+			"Convertible is not supported (slate)\n");
+
+	return ASLC_CONVERTIBLE_FAILED;
+}
+
+static u32 asle_set_docking(struct drm_i915_private *dev_priv, u32 iuer)
+{
+	if (iuer & ASLE_IUER_DOCKING)
+		drm_dbg(&dev_priv->drm, "Docking is not supported (docked)\n");
+	else
+		drm_dbg(&dev_priv->drm,
+			"Docking is not supported (undocked)\n");
+
+	return ASLC_DOCKING_FAILED;
+}
+
+static u32 asle_isct_state(struct drm_i915_private *dev_priv)
+{
+	drm_dbg(&dev_priv->drm, "ISCT is not supported\n");
+	return ASLC_ISCT_STATE_FAILED;
+}
+
+static void asle_work(struct work_struct *work)
+{
+	struct intel_opregion *opregion =
+		container_of(work, struct intel_opregion, asle_work);
+	struct drm_i915_private *dev_priv =
+		container_of(opregion, struct drm_i915_private, display.opregion);
+	struct opregion_asle *asle = dev_priv->display.opregion.asle;
+	u32 aslc_stat = 0;
+	u32 aslc_req;
+
+	if (!asle)
+		return;
+
+	aslc_req = asle->aslc;
+
+	if (!(aslc_req & ASLC_REQ_MSK)) {
+		drm_dbg(&dev_priv->drm,
+			"No request on ASLC interrupt 0x%08x\n", aslc_req);
+		return;
+	}
+
+	if (aslc_req & ASLC_SET_ALS_ILLUM)
+		aslc_stat |= asle_set_als_illum(dev_priv, asle->alsi);
+
+	if (aslc_req & ASLC_SET_BACKLIGHT)
+		aslc_stat |= asle_set_backlight(dev_priv, asle->bclp);
+
+	if (aslc_req & ASLC_SET_PFIT)
+		aslc_stat |= asle_set_pfit(dev_priv, asle->pfit);
+
+	if (aslc_req & ASLC_SET_PWM_FREQ)
+		aslc_stat |= asle_set_pwm_freq(dev_priv, asle->pfmb);
+
+	if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES)
+		aslc_stat |= asle_set_supported_rotation_angles(dev_priv,
+							asle->srot);
+
+	if (aslc_req & ASLC_BUTTON_ARRAY)
+		aslc_stat |= asle_set_button_array(dev_priv, asle->iuer);
+
+	if (aslc_req & ASLC_CONVERTIBLE_INDICATOR)
+		aslc_stat |= asle_set_convertible(dev_priv, asle->iuer);
+
+	if (aslc_req & ASLC_DOCKING_INDICATOR)
+		aslc_stat |= asle_set_docking(dev_priv, asle->iuer);
+
+	if (aslc_req & ASLC_ISCT_STATE_CHANGE)
+		aslc_stat |= asle_isct_state(dev_priv);
+
+	asle->aslc = aslc_stat;
+}
+
+void intel_opregion_asle_intr(struct drm_i915_private *dev_priv)
+{
+	if (dev_priv->display.opregion.asle)
+		schedule_work(&dev_priv->display.opregion.asle_work);
+}
+
+#define ACPI_EV_DISPLAY_SWITCH (1<<0)
+#define ACPI_EV_LID            (1<<1)
+#define ACPI_EV_DOCK           (1<<2)
+
+/*
+ * The only video events relevant to opregion are 0x80. These indicate either a
+ * docking event, lid switch or display switch request. In Linux, these are
+ * handled by the dock, button and video drivers.
+ */
+static int intel_opregion_video_event(struct notifier_block *nb,
+				      unsigned long val, void *data)
+{
+	struct intel_opregion *opregion = container_of(nb, struct intel_opregion,
+						       acpi_notifier);
+	struct acpi_bus_event *event = data;
+	struct opregion_acpi *acpi;
+	int ret = NOTIFY_OK;
+
+	if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0)
+		return NOTIFY_DONE;
+
+	acpi = opregion->acpi;
+
+	if (event->type == 0x80 && ((acpi->cevt & 1) == 0))
+		ret = NOTIFY_BAD;
+
+	acpi->csts = 0;
+
+	return ret;
+}
+
+/*
+ * Initialise the DIDL field in opregion. This passes a list of devices to
+ * the firmware. Values are defined by section B.4.2 of the ACPI specification
+ * (version 3)
+ */
+
+static void set_did(struct intel_opregion *opregion, int i, u32 val)
+{
+	if (i < ARRAY_SIZE(opregion->acpi->didl)) {
+		opregion->acpi->didl[i] = val;
+	} else {
+		i -= ARRAY_SIZE(opregion->acpi->didl);
+
+		if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2)))
+			return;
+
+		opregion->acpi->did2[i] = val;
+	}
+}
+
+static void intel_didl_outputs(struct drm_i915_private *dev_priv)
+{
+	struct intel_opregion *opregion = &dev_priv->display.opregion;
+	struct intel_connector *connector;
+	struct drm_connector_list_iter conn_iter;
+	int i = 0, max_outputs;
+
+	/*
+	 * In theory, did2, the extended didl, gets added at opregion version
+	 * 3.0. In practice, however, we're supposed to set it for earlier
+	 * versions as well, since a BIOS that doesn't understand did2 should
+	 * not look at it anyway. Use a variable so we can tweak this if a need
+	 * arises later.
+	 */
+	max_outputs = ARRAY_SIZE(opregion->acpi->didl) +
+		ARRAY_SIZE(opregion->acpi->did2);
+
+	intel_acpi_device_id_update(dev_priv);
+
+	drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);
+	for_each_intel_connector_iter(connector, &conn_iter) {
+		if (i < max_outputs)
+			set_did(opregion, i, connector->acpi_device_id);
+		i++;
+	}
+	drm_connector_list_iter_end(&conn_iter);
+
+	drm_dbg_kms(&dev_priv->drm, "%d outputs detected\n", i);
+
+	if (i > max_outputs)
+		drm_err(&dev_priv->drm,
+			"More than %d outputs in connector list\n",
+			max_outputs);
+
+	/* If fewer than max outputs, the list must be null terminated */
+	if (i < max_outputs)
+		set_did(opregion, i, 0);
+}
+
+static void intel_setup_cadls(struct drm_i915_private *dev_priv)
+{
+	struct intel_opregion *opregion = &dev_priv->display.opregion;
+	struct intel_connector *connector;
+	struct drm_connector_list_iter conn_iter;
+	int i = 0;
+
+	/*
+	 * Initialize the CADL field from the connector device ids. This is
+	 * essentially the same as copying from the DIDL. Technically, this is
+	 * not always correct as display outputs may exist, but not active. This
+	 * initialization is necessary for some Clevo laptops that check this
+	 * field before processing the brightness and display switching hotkeys.
+	 *
+	 * Note that internal panels should be at the front of the connector
+	 * list already, ensuring they're not left out.
+	 */
+	drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);
+	for_each_intel_connector_iter(connector, &conn_iter) {
+		if (i >= ARRAY_SIZE(opregion->acpi->cadl))
+			break;
+		opregion->acpi->cadl[i++] = connector->acpi_device_id;
+	}
+	drm_connector_list_iter_end(&conn_iter);
+
+	/* If fewer than 8 active devices, the list must be null terminated */
+	if (i < ARRAY_SIZE(opregion->acpi->cadl))
+		opregion->acpi->cadl[i] = 0;
+}
+
+static void swsci_setup(struct drm_i915_private *dev_priv)
+{
+	struct intel_opregion *opregion = &dev_priv->display.opregion;
+	bool requested_callbacks = false;
+	u32 tmp;
+
+	/* Sub-function code 0 is okay, let's allow them. */
+	opregion->swsci_gbda_sub_functions = 1;
+	opregion->swsci_sbcb_sub_functions = 1;
+
+	/* We use GBDA to ask for supported GBDA calls. */
+	if (swsci(dev_priv, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) {
+		/* make the bits match the sub-function codes */
+		tmp <<= 1;
+		opregion->swsci_gbda_sub_functions |= tmp;
+	}
+
+	/*
+	 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver
+	 * must not call interfaces that are not specifically requested by the
+	 * bios.
+	 */
+	if (swsci(dev_priv, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) {
+		/* here, the bits already match sub-function codes */
+		opregion->swsci_sbcb_sub_functions |= tmp;
+		requested_callbacks = true;
+	}
+
+	/*
+	 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean
+	 * the callback is _requested_. But we still can't call interfaces that
+	 * are not requested.
+	 */
+	if (swsci(dev_priv, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) {
+		/* make the bits match the sub-function codes */
+		u32 low = tmp & 0x7ff;
+		u32 high = tmp & ~0xfff; /* bit 11 is reserved */
+		tmp = (high << 4) | (low << 1) | 1;
+
+		/* best guess what to do with supported wrt requested */
+		if (requested_callbacks) {
+			u32 req = opregion->swsci_sbcb_sub_functions;
+			if ((req & tmp) != req)
+				drm_dbg(&dev_priv->drm,
+					"SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n",
+					req, tmp);
+			/* XXX: for now, trust the requested callbacks */
+			/* opregion->swsci_sbcb_sub_functions &= tmp; */
+		} else {
+			opregion->swsci_sbcb_sub_functions |= tmp;
+		}
+	}
+
+	drm_dbg(&dev_priv->drm,
+		"SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n",
+		opregion->swsci_gbda_sub_functions,
+		opregion->swsci_sbcb_sub_functions);
+}
+
+static int intel_no_opregion_vbt_callback(const struct dmi_system_id *id)
+{
+	DRM_DEBUG_KMS("Falling back to manually reading VBT from "
+		      "VBIOS ROM for %s\n", id->ident);
+	return 1;
+}
+
+static const struct dmi_system_id intel_no_opregion_vbt[] = {
+	{
+		.callback = intel_no_opregion_vbt_callback,
+		.ident = "ThinkCentre A57",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "97027RG"),
+		},
+	},
+	{ }
+};
+
+static int intel_load_vbt_firmware(struct drm_i915_private *dev_priv)
+{
+	struct intel_opregion *opregion = &dev_priv->display.opregion;
+	const struct firmware *fw = NULL;
+	const char *name = dev_priv->params.vbt_firmware;
+	int ret;
+
+	if (!name || !*name)
+		return -ENOENT;
+
+	ret = request_firmware(&fw, name, dev_priv->drm.dev);
+	if (ret) {
+		drm_err(&dev_priv->drm,
+			"Requesting VBT firmware \"%s\" failed (%d)\n",
+			name, ret);
+		return ret;
+	}
+
+	if (intel_bios_is_valid_vbt(fw->data, fw->size)) {
+		opregion->vbt_firmware = kmemdup(fw->data, fw->size, GFP_KERNEL);
+		if (opregion->vbt_firmware) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "Found valid VBT firmware \"%s\"\n", name);
+			opregion->vbt = opregion->vbt_firmware;
+			opregion->vbt_size = fw->size;
+			ret = 0;
+		} else {
+			ret = -ENOMEM;
+		}
+	} else {
+		drm_dbg_kms(&dev_priv->drm, "Invalid VBT firmware \"%s\"\n",
+			    name);
+		ret = -EINVAL;
+	}
+
+	release_firmware(fw);
+
+	return ret;
+}
+
+int intel_opregion_setup(struct drm_i915_private *dev_priv)
+{
+	struct intel_opregion *opregion = &dev_priv->display.opregion;
+	struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
+	u32 asls, mboxes;
+	char buf[sizeof(OPREGION_SIGNATURE)];
+	int err = 0;
+	void *base;
+	const void *vbt;
+	u32 vbt_size;
+
+	BUILD_BUG_ON(sizeof(struct opregion_header) != 0x100);
+	BUILD_BUG_ON(sizeof(struct opregion_acpi) != 0x100);
+	BUILD_BUG_ON(sizeof(struct opregion_swsci) != 0x100);
+	BUILD_BUG_ON(sizeof(struct opregion_asle) != 0x100);
+	BUILD_BUG_ON(sizeof(struct opregion_asle_ext) != 0x400);
+
+	pci_read_config_dword(pdev, ASLS, &asls);
+	drm_dbg(&dev_priv->drm, "graphic opregion physical addr: 0x%x\n",
+		asls);
+	if (asls == 0) {
+		drm_dbg(&dev_priv->drm, "ACPI OpRegion not supported!\n");
+		return -ENOTSUPP;
+	}
+
+	INIT_WORK(&opregion->asle_work, asle_work);
+
+	base = memremap(asls, OPREGION_SIZE, MEMREMAP_WB);
+	if (!base)
+		return -ENOMEM;
+
+	memcpy(buf, base, sizeof(buf));
+
+	if (memcmp(buf, OPREGION_SIGNATURE, 16)) {
+		drm_dbg(&dev_priv->drm, "opregion signature mismatch\n");
+		err = -EINVAL;
+		goto err_out;
+	}
+	opregion->header = base;
+	opregion->lid_state = base + ACPI_CLID;
+
+	drm_dbg(&dev_priv->drm, "ACPI OpRegion version %u.%u.%u\n",
+		opregion->header->over.major,
+		opregion->header->over.minor,
+		opregion->header->over.revision);
+
+	mboxes = opregion->header->mboxes;
+	if (mboxes & MBOX_ACPI) {
+		drm_dbg(&dev_priv->drm, "Public ACPI methods supported\n");
+		opregion->acpi = base + OPREGION_ACPI_OFFSET;
+		/*
+		 * Indicate we handle monitor hotplug events ourselves so we do
+		 * not need ACPI notifications for them. Disabling these avoids
+		 * triggering the AML code doing the notifation, which may be
+		 * broken as Windows also seems to disable these.
+		 */
+		opregion->acpi->chpd = 1;
+	}
+
+	if (mboxes & MBOX_SWSCI) {
+		u8 major = opregion->header->over.major;
+
+		if (major >= 3) {
+			drm_err(&dev_priv->drm, "SWSCI Mailbox #2 present for opregion v3.x, ignoring\n");
+		} else {
+			if (major >= 2)
+				drm_dbg(&dev_priv->drm, "SWSCI Mailbox #2 present for opregion v2.x\n");
+			drm_dbg(&dev_priv->drm, "SWSCI supported\n");
+			opregion->swsci = base + OPREGION_SWSCI_OFFSET;
+			swsci_setup(dev_priv);
+		}
+	}
+
+	if (mboxes & MBOX_ASLE) {
+		drm_dbg(&dev_priv->drm, "ASLE supported\n");
+		opregion->asle = base + OPREGION_ASLE_OFFSET;
+
+		opregion->asle->ardy = ASLE_ARDY_NOT_READY;
+	}
+
+	if (mboxes & MBOX_ASLE_EXT) {
+		drm_dbg(&dev_priv->drm, "ASLE extension supported\n");
+		opregion->asle_ext = base + OPREGION_ASLE_EXT_OFFSET;
+	}
+
+	if (mboxes & MBOX_BACKLIGHT) {
+		drm_dbg(&dev_priv->drm, "Mailbox #2 for backlight present\n");
+	}
+
+	if (intel_load_vbt_firmware(dev_priv) == 0)
+		goto out;
+
+	if (dmi_check_system(intel_no_opregion_vbt))
+		goto out;
+
+	if (opregion->header->over.major >= 2 && opregion->asle &&
+	    opregion->asle->rvda && opregion->asle->rvds) {
+		resource_size_t rvda = opregion->asle->rvda;
+
+		/*
+		 * opregion 2.0: rvda is the physical VBT address.
+		 *
+		 * opregion 2.1+: rvda is unsigned, relative offset from
+		 * opregion base, and should never point within opregion.
+		 */
+		if (opregion->header->over.major > 2 ||
+		    opregion->header->over.minor >= 1) {
+			drm_WARN_ON(&dev_priv->drm, rvda < OPREGION_SIZE);
+
+			rvda += asls;
+		}
+
+		opregion->rvda = memremap(rvda, opregion->asle->rvds,
+					  MEMREMAP_WB);
+
+		vbt = opregion->rvda;
+		vbt_size = opregion->asle->rvds;
+		if (intel_bios_is_valid_vbt(vbt, vbt_size)) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "Found valid VBT in ACPI OpRegion (RVDA)\n");
+			opregion->vbt = vbt;
+			opregion->vbt_size = vbt_size;
+			goto out;
+		} else {
+			drm_dbg_kms(&dev_priv->drm,
+				    "Invalid VBT in ACPI OpRegion (RVDA)\n");
+			memunmap(opregion->rvda);
+			opregion->rvda = NULL;
+		}
+	}
+
+	vbt = base + OPREGION_VBT_OFFSET;
+	/*
+	 * The VBT specification says that if the ASLE ext mailbox is not used
+	 * its area is reserved, but on some CHT boards the VBT extends into the
+	 * ASLE ext area. Allow this even though it is against the spec, so we
+	 * do not end up rejecting the VBT on those boards (and end up not
+	 * finding the LCD panel because of this).
+	 */
+	vbt_size = (mboxes & MBOX_ASLE_EXT) ?
+		OPREGION_ASLE_EXT_OFFSET : OPREGION_SIZE;
+	vbt_size -= OPREGION_VBT_OFFSET;
+	if (intel_bios_is_valid_vbt(vbt, vbt_size)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Found valid VBT in ACPI OpRegion (Mailbox #4)\n");
+		opregion->vbt = vbt;
+		opregion->vbt_size = vbt_size;
+	} else {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Invalid VBT in ACPI OpRegion (Mailbox #4)\n");
+	}
+
+out:
+	return 0;
+
+err_out:
+	memunmap(base);
+	return err;
+}
+
+static int intel_use_opregion_panel_type_callback(const struct dmi_system_id *id)
+{
+	DRM_INFO("Using panel type from OpRegion on %s\n", id->ident);
+	return 1;
+}
+
+static const struct dmi_system_id intel_use_opregion_panel_type[] = {
+	{
+		.callback = intel_use_opregion_panel_type_callback,
+		.ident = "Conrac GmbH IX45GM2",
+		.matches = {DMI_MATCH(DMI_SYS_VENDOR, "Conrac GmbH"),
+			    DMI_MATCH(DMI_PRODUCT_NAME, "IX45GM2"),
+		},
+	},
+	{ }
+};
+
+int
+intel_opregion_get_panel_type(struct drm_i915_private *dev_priv)
+{
+	u32 panel_details;
+	int ret;
+
+	ret = swsci(dev_priv, SWSCI_GBDA_PANEL_DETAILS, 0x0, &panel_details);
+	if (ret)
+		return ret;
+
+	ret = (panel_details >> 8) & 0xff;
+	if (ret > 0x10) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Invalid OpRegion panel type 0x%x\n", ret);
+		return -EINVAL;
+	}
+
+	/* fall back to VBT panel type? */
+	if (ret == 0x0) {
+		drm_dbg_kms(&dev_priv->drm, "No panel type in OpRegion\n");
+		return -ENODEV;
+	}
+
+	/*
+	 * So far we know that some machined must use it, others must not use it.
+	 * There doesn't seem to be any way to determine which way to go, except
+	 * via a quirk list :(
+	 */
+	if (!dmi_check_system(intel_use_opregion_panel_type)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Ignoring OpRegion panel type (%d)\n", ret - 1);
+		return -ENODEV;
+	}
+
+	return ret - 1;
+}
+
+/**
+ * intel_opregion_get_edid - Fetch EDID from ACPI OpRegion mailbox #5
+ * @intel_connector: eDP connector
+ *
+ * This reads the ACPI Opregion mailbox #5 to extract the EDID that is passed
+ * to it.
+ *
+ * Returns:
+ * The EDID in the OpRegion, or NULL if there is none or it's invalid.
+ *
+ */
+struct edid *intel_opregion_get_edid(struct intel_connector *intel_connector)
+{
+	struct drm_connector *connector = &intel_connector->base;
+	struct drm_i915_private *i915 = to_i915(connector->dev);
+	struct intel_opregion *opregion = &i915->display.opregion;
+	const void *in_edid;
+	const struct edid *edid;
+	struct edid *new_edid;
+	int len;
+
+	if (!opregion->asle_ext)
+		return NULL;
+
+	in_edid = opregion->asle_ext->bddc;
+
+	/* Validity corresponds to number of 128-byte blocks */
+	len = (opregion->asle_ext->phed & ASLE_PHED_EDID_VALID_MASK) * 128;
+	if (!len || !memchr_inv(in_edid, 0, len))
+		return NULL;
+
+	edid = in_edid;
+
+	if (len < EDID_LENGTH * (1 + edid->extensions)) {
+		drm_dbg_kms(&i915->drm, "Invalid EDID in ACPI OpRegion (Mailbox #5): too short\n");
+		return NULL;
+	}
+	new_edid = drm_edid_duplicate(edid);
+	if (!new_edid)
+		return NULL;
+	if (!drm_edid_is_valid(new_edid)) {
+		kfree(new_edid);
+		drm_dbg_kms(&i915->drm, "Invalid EDID in ACPI OpRegion (Mailbox #5)\n");
+		return NULL;
+	}
+	return new_edid;
+}
+
+bool intel_opregion_headless_sku(struct drm_i915_private *i915)
+{
+	struct intel_opregion *opregion = &i915->display.opregion;
+	struct opregion_header *header = opregion->header;
+
+	if (!header || header->over.major < 2 ||
+	    (header->over.major == 2 && header->over.minor < 3))
+		return false;
+
+	return opregion->header->pcon & PCON_HEADLESS_SKU;
+}
+
+void intel_opregion_register(struct drm_i915_private *i915)
+{
+	struct intel_opregion *opregion = &i915->display.opregion;
+
+	if (!opregion->header)
+		return;
+
+	if (opregion->acpi) {
+		opregion->acpi_notifier.notifier_call =
+			intel_opregion_video_event;
+		register_acpi_notifier(&opregion->acpi_notifier);
+	}
+
+	intel_opregion_resume(i915);
+}
+
+void intel_opregion_resume(struct drm_i915_private *i915)
+{
+	struct intel_opregion *opregion = &i915->display.opregion;
+
+	if (!opregion->header)
+		return;
+
+	if (opregion->acpi) {
+		intel_didl_outputs(i915);
+		intel_setup_cadls(i915);
+
+		/*
+		 * Notify BIOS we are ready to handle ACPI video ext notifs.
+		 * Right now, all the events are handled by the ACPI video
+		 * module. We don't actually need to do anything with them.
+		 */
+		opregion->acpi->csts = 0;
+		opregion->acpi->drdy = 1;
+	}
+
+	if (opregion->asle) {
+		opregion->asle->tche = ASLE_TCHE_BLC_EN;
+		opregion->asle->ardy = ASLE_ARDY_READY;
+	}
+
+	/* Some platforms abuse the _DSM to enable MUX */
+	intel_dsm_get_bios_data_funcs_supported(i915);
+
+	intel_opregion_notify_adapter(i915, PCI_D0);
+}
+
+void intel_opregion_suspend(struct drm_i915_private *i915, pci_power_t state)
+{
+	struct intel_opregion *opregion = &i915->display.opregion;
+
+	if (!opregion->header)
+		return;
+
+	intel_opregion_notify_adapter(i915, state);
+
+	if (opregion->asle)
+		opregion->asle->ardy = ASLE_ARDY_NOT_READY;
+
+	cancel_work_sync(&i915->display.opregion.asle_work);
+
+	if (opregion->acpi)
+		opregion->acpi->drdy = 0;
+}
+
+void intel_opregion_unregister(struct drm_i915_private *i915)
+{
+	struct intel_opregion *opregion = &i915->display.opregion;
+
+	intel_opregion_suspend(i915, PCI_D1);
+
+	if (!opregion->header)
+		return;
+
+	if (opregion->acpi_notifier.notifier_call) {
+		unregister_acpi_notifier(&opregion->acpi_notifier);
+		opregion->acpi_notifier.notifier_call = NULL;
+	}
+
+	/* just clear all opregion memory pointers now */
+	memunmap(opregion->header);
+	if (opregion->rvda) {
+		memunmap(opregion->rvda);
+		opregion->rvda = NULL;
+	}
+	if (opregion->vbt_firmware) {
+		kfree(opregion->vbt_firmware);
+		opregion->vbt_firmware = NULL;
+	}
+	opregion->header = NULL;
+	opregion->acpi = NULL;
+	opregion->swsci = NULL;
+	opregion->asle = NULL;
+	opregion->asle_ext = NULL;
+	opregion->vbt = NULL;
+	opregion->lid_state = NULL;
+}
diff --git a/drivers/gpu/drm/i915/display/intel_opregion.h b/drivers/gpu/drm/i915/display/intel_opregion.h
new file mode 100644
index 000000000..2f261f985
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_opregion.h
@@ -0,0 +1,139 @@
+/*
+ * Copyright © 2008-2017 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ */
+
+#ifndef _INTEL_OPREGION_H_
+#define _INTEL_OPREGION_H_
+
+#include <linux/workqueue.h>
+#include <linux/pci.h>
+
+struct drm_i915_private;
+struct intel_connector;
+struct intel_encoder;
+
+struct opregion_header;
+struct opregion_acpi;
+struct opregion_swsci;
+struct opregion_asle;
+struct opregion_asle_ext;
+
+struct intel_opregion {
+	struct opregion_header *header;
+	struct opregion_acpi *acpi;
+	struct opregion_swsci *swsci;
+	u32 swsci_gbda_sub_functions;
+	u32 swsci_sbcb_sub_functions;
+	struct opregion_asle *asle;
+	struct opregion_asle_ext *asle_ext;
+	void *rvda;
+	void *vbt_firmware;
+	const void *vbt;
+	u32 vbt_size;
+	u32 *lid_state;
+	struct work_struct asle_work;
+	struct notifier_block acpi_notifier;
+};
+
+#define OPREGION_SIZE            (8 * 1024)
+
+#ifdef CONFIG_ACPI
+
+int intel_opregion_setup(struct drm_i915_private *dev_priv);
+
+void intel_opregion_register(struct drm_i915_private *dev_priv);
+void intel_opregion_unregister(struct drm_i915_private *dev_priv);
+
+void intel_opregion_resume(struct drm_i915_private *dev_priv);
+void intel_opregion_suspend(struct drm_i915_private *dev_priv,
+			    pci_power_t state);
+
+void intel_opregion_asle_intr(struct drm_i915_private *dev_priv);
+int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
+				  bool enable);
+int intel_opregion_notify_adapter(struct drm_i915_private *dev_priv,
+				  pci_power_t state);
+int intel_opregion_get_panel_type(struct drm_i915_private *dev_priv);
+struct edid *intel_opregion_get_edid(struct intel_connector *connector);
+
+bool intel_opregion_headless_sku(struct drm_i915_private *i915);
+
+#else /* CONFIG_ACPI*/
+
+static inline int intel_opregion_setup(struct drm_i915_private *dev_priv)
+{
+	return 0;
+}
+
+static inline void intel_opregion_register(struct drm_i915_private *dev_priv)
+{
+}
+
+static inline void intel_opregion_unregister(struct drm_i915_private *dev_priv)
+{
+}
+
+static inline void intel_opregion_resume(struct drm_i915_private *dev_priv)
+{
+}
+
+static inline void intel_opregion_suspend(struct drm_i915_private *dev_priv,
+					  pci_power_t state)
+{
+}
+
+static inline void intel_opregion_asle_intr(struct drm_i915_private *dev_priv)
+{
+}
+
+static inline int
+intel_opregion_notify_encoder(struct intel_encoder *intel_encoder, bool enable)
+{
+	return 0;
+}
+
+static inline int
+intel_opregion_notify_adapter(struct drm_i915_private *dev, pci_power_t state)
+{
+	return 0;
+}
+
+static inline int intel_opregion_get_panel_type(struct drm_i915_private *dev)
+{
+	return -ENODEV;
+}
+
+static inline struct edid *
+intel_opregion_get_edid(struct intel_connector *connector)
+{
+	return NULL;
+}
+
+static inline bool intel_opregion_headless_sku(struct drm_i915_private *i915)
+{
+	return false;
+}
+
+#endif /* CONFIG_ACPI */
+
+#endif
diff --git a/drivers/gpu/drm/i915/display/intel_overlay.c b/drivers/gpu/drm/i915/display/intel_overlay.c
new file mode 100644
index 000000000..c12bdca8d
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_overlay.c
@@ -0,0 +1,1533 @@
+/*
+ * Copyright © 2009
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Authors:
+ *    Daniel Vetter <daniel@ffwll.ch>
+ *
+ * Derived from Xorg ddx, xf86-video-intel, src/i830_video.c
+ */
+
+#include <drm/drm_fourcc.h>
+
+#include "gem/i915_gem_internal.h"
+#include "gem/i915_gem_pm.h"
+#include "gt/intel_gpu_commands.h"
+#include "gt/intel_ring.h"
+
+#include "i915_drv.h"
+#include "i915_reg.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_frontbuffer.h"
+#include "intel_overlay.h"
+#include "intel_pci_config.h"
+
+/* Limits for overlay size. According to intel doc, the real limits are:
+ * Y width: 4095, UV width (planar): 2047, Y height: 2047,
+ * UV width (planar): * 1023. But the xorg thinks 2048 for height and width. Use
+ * the mininum of both.  */
+#define IMAGE_MAX_WIDTH		2048
+#define IMAGE_MAX_HEIGHT	2046 /* 2 * 1023 */
+/* on 830 and 845 these large limits result in the card hanging */
+#define IMAGE_MAX_WIDTH_LEGACY	1024
+#define IMAGE_MAX_HEIGHT_LEGACY	1088
+
+/* overlay register definitions */
+/* OCMD register */
+#define OCMD_TILED_SURFACE	(0x1<<19)
+#define OCMD_MIRROR_MASK	(0x3<<17)
+#define OCMD_MIRROR_MODE	(0x3<<17)
+#define OCMD_MIRROR_HORIZONTAL	(0x1<<17)
+#define OCMD_MIRROR_VERTICAL	(0x2<<17)
+#define OCMD_MIRROR_BOTH	(0x3<<17)
+#define OCMD_BYTEORDER_MASK	(0x3<<14) /* zero for YUYV or FOURCC YUY2 */
+#define OCMD_UV_SWAP		(0x1<<14) /* YVYU */
+#define OCMD_Y_SWAP		(0x2<<14) /* UYVY or FOURCC UYVY */
+#define OCMD_Y_AND_UV_SWAP	(0x3<<14) /* VYUY */
+#define OCMD_SOURCE_FORMAT_MASK (0xf<<10)
+#define OCMD_RGB_888		(0x1<<10) /* not in i965 Intel docs */
+#define OCMD_RGB_555		(0x2<<10) /* not in i965 Intel docs */
+#define OCMD_RGB_565		(0x3<<10) /* not in i965 Intel docs */
+#define OCMD_YUV_422_PACKED	(0x8<<10)
+#define OCMD_YUV_411_PACKED	(0x9<<10) /* not in i965 Intel docs */
+#define OCMD_YUV_420_PLANAR	(0xc<<10)
+#define OCMD_YUV_422_PLANAR	(0xd<<10)
+#define OCMD_YUV_410_PLANAR	(0xe<<10) /* also 411 */
+#define OCMD_TVSYNCFLIP_PARITY	(0x1<<9)
+#define OCMD_TVSYNCFLIP_ENABLE	(0x1<<7)
+#define OCMD_BUF_TYPE_MASK	(0x1<<5)
+#define OCMD_BUF_TYPE_FRAME	(0x0<<5)
+#define OCMD_BUF_TYPE_FIELD	(0x1<<5)
+#define OCMD_TEST_MODE		(0x1<<4)
+#define OCMD_BUFFER_SELECT	(0x3<<2)
+#define OCMD_BUFFER0		(0x0<<2)
+#define OCMD_BUFFER1		(0x1<<2)
+#define OCMD_FIELD_SELECT	(0x1<<2)
+#define OCMD_FIELD0		(0x0<<1)
+#define OCMD_FIELD1		(0x1<<1)
+#define OCMD_ENABLE		(0x1<<0)
+
+/* OCONFIG register */
+#define OCONF_PIPE_MASK		(0x1<<18)
+#define OCONF_PIPE_A		(0x0<<18)
+#define OCONF_PIPE_B		(0x1<<18)
+#define OCONF_GAMMA2_ENABLE	(0x1<<16)
+#define OCONF_CSC_MODE_BT601	(0x0<<5)
+#define OCONF_CSC_MODE_BT709	(0x1<<5)
+#define OCONF_CSC_BYPASS	(0x1<<4)
+#define OCONF_CC_OUT_8BIT	(0x1<<3)
+#define OCONF_TEST_MODE		(0x1<<2)
+#define OCONF_THREE_LINE_BUFFER	(0x1<<0)
+#define OCONF_TWO_LINE_BUFFER	(0x0<<0)
+
+/* DCLRKM (dst-key) register */
+#define DST_KEY_ENABLE		(0x1<<31)
+#define CLK_RGB24_MASK		0x0
+#define CLK_RGB16_MASK		0x070307
+#define CLK_RGB15_MASK		0x070707
+
+#define RGB30_TO_COLORKEY(c) \
+	((((c) & 0x3fc00000) >> 6) | (((c) & 0x000ff000) >> 4) | (((c) & 0x000003fc) >> 2))
+#define RGB16_TO_COLORKEY(c) \
+	((((c) & 0xf800) << 8) | (((c) & 0x07e0) << 5) | (((c) & 0x001f) << 3))
+#define RGB15_TO_COLORKEY(c) \
+	((((c) & 0x7c00) << 9) | (((c) & 0x03e0) << 6) | (((c) & 0x001f) << 3))
+#define RGB8I_TO_COLORKEY(c) \
+	((((c) & 0xff) << 16) | (((c) & 0xff) << 8) | (((c) & 0xff) << 0))
+
+/* overlay flip addr flag */
+#define OFC_UPDATE		0x1
+
+/* polyphase filter coefficients */
+#define N_HORIZ_Y_TAPS          5
+#define N_VERT_Y_TAPS           3
+#define N_HORIZ_UV_TAPS         3
+#define N_VERT_UV_TAPS          3
+#define N_PHASES                17
+#define MAX_TAPS                5
+
+/* memory bufferd overlay registers */
+struct overlay_registers {
+	u32 OBUF_0Y;
+	u32 OBUF_1Y;
+	u32 OBUF_0U;
+	u32 OBUF_0V;
+	u32 OBUF_1U;
+	u32 OBUF_1V;
+	u32 OSTRIDE;
+	u32 YRGB_VPH;
+	u32 UV_VPH;
+	u32 HORZ_PH;
+	u32 INIT_PHS;
+	u32 DWINPOS;
+	u32 DWINSZ;
+	u32 SWIDTH;
+	u32 SWIDTHSW;
+	u32 SHEIGHT;
+	u32 YRGBSCALE;
+	u32 UVSCALE;
+	u32 OCLRC0;
+	u32 OCLRC1;
+	u32 DCLRKV;
+	u32 DCLRKM;
+	u32 SCLRKVH;
+	u32 SCLRKVL;
+	u32 SCLRKEN;
+	u32 OCONFIG;
+	u32 OCMD;
+	u32 RESERVED1; /* 0x6C */
+	u32 OSTART_0Y;
+	u32 OSTART_1Y;
+	u32 OSTART_0U;
+	u32 OSTART_0V;
+	u32 OSTART_1U;
+	u32 OSTART_1V;
+	u32 OTILEOFF_0Y;
+	u32 OTILEOFF_1Y;
+	u32 OTILEOFF_0U;
+	u32 OTILEOFF_0V;
+	u32 OTILEOFF_1U;
+	u32 OTILEOFF_1V;
+	u32 FASTHSCALE; /* 0xA0 */
+	u32 UVSCALEV; /* 0xA4 */
+	u32 RESERVEDC[(0x200 - 0xA8) / 4]; /* 0xA8 - 0x1FC */
+	u16 Y_VCOEFS[N_VERT_Y_TAPS * N_PHASES]; /* 0x200 */
+	u16 RESERVEDD[0x100 / 2 - N_VERT_Y_TAPS * N_PHASES];
+	u16 Y_HCOEFS[N_HORIZ_Y_TAPS * N_PHASES]; /* 0x300 */
+	u16 RESERVEDE[0x200 / 2 - N_HORIZ_Y_TAPS * N_PHASES];
+	u16 UV_VCOEFS[N_VERT_UV_TAPS * N_PHASES]; /* 0x500 */
+	u16 RESERVEDF[0x100 / 2 - N_VERT_UV_TAPS * N_PHASES];
+	u16 UV_HCOEFS[N_HORIZ_UV_TAPS * N_PHASES]; /* 0x600 */
+	u16 RESERVEDG[0x100 / 2 - N_HORIZ_UV_TAPS * N_PHASES];
+};
+
+struct intel_overlay {
+	struct drm_i915_private *i915;
+	struct intel_context *context;
+	struct intel_crtc *crtc;
+	struct i915_vma *vma;
+	struct i915_vma *old_vma;
+	struct intel_frontbuffer *frontbuffer;
+	bool active;
+	bool pfit_active;
+	u32 pfit_vscale_ratio; /* shifted-point number, (1<<12) == 1.0 */
+	u32 color_key:24;
+	u32 color_key_enabled:1;
+	u32 brightness, contrast, saturation;
+	u32 old_xscale, old_yscale;
+	/* register access */
+	struct drm_i915_gem_object *reg_bo;
+	struct overlay_registers __iomem *regs;
+	u32 flip_addr;
+	/* flip handling */
+	struct i915_active last_flip;
+	void (*flip_complete)(struct intel_overlay *ovl);
+};
+
+static void i830_overlay_clock_gating(struct drm_i915_private *dev_priv,
+				      bool enable)
+{
+	struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
+	u8 val;
+
+	/* WA_OVERLAY_CLKGATE:alm */
+	if (enable)
+		intel_de_write(dev_priv, DSPCLK_GATE_D(dev_priv), 0);
+	else
+		intel_de_write(dev_priv, DSPCLK_GATE_D(dev_priv),
+			       OVRUNIT_CLOCK_GATE_DISABLE);
+
+	/* WA_DISABLE_L2CACHE_CLOCK_GATING:alm */
+	pci_bus_read_config_byte(pdev->bus,
+				 PCI_DEVFN(0, 0), I830_CLOCK_GATE, &val);
+	if (enable)
+		val &= ~I830_L2_CACHE_CLOCK_GATE_DISABLE;
+	else
+		val |= I830_L2_CACHE_CLOCK_GATE_DISABLE;
+	pci_bus_write_config_byte(pdev->bus,
+				  PCI_DEVFN(0, 0), I830_CLOCK_GATE, val);
+}
+
+static struct i915_request *
+alloc_request(struct intel_overlay *overlay, void (*fn)(struct intel_overlay *))
+{
+	struct i915_request *rq;
+	int err;
+
+	overlay->flip_complete = fn;
+
+	rq = i915_request_create(overlay->context);
+	if (IS_ERR(rq))
+		return rq;
+
+	err = i915_active_add_request(&overlay->last_flip, rq);
+	if (err) {
+		i915_request_add(rq);
+		return ERR_PTR(err);
+	}
+
+	return rq;
+}
+
+/* overlay needs to be disable in OCMD reg */
+static int intel_overlay_on(struct intel_overlay *overlay)
+{
+	struct drm_i915_private *dev_priv = overlay->i915;
+	struct i915_request *rq;
+	u32 *cs;
+
+	drm_WARN_ON(&dev_priv->drm, overlay->active);
+
+	rq = alloc_request(overlay, NULL);
+	if (IS_ERR(rq))
+		return PTR_ERR(rq);
+
+	cs = intel_ring_begin(rq, 4);
+	if (IS_ERR(cs)) {
+		i915_request_add(rq);
+		return PTR_ERR(cs);
+	}
+
+	overlay->active = true;
+
+	if (IS_I830(dev_priv))
+		i830_overlay_clock_gating(dev_priv, false);
+
+	*cs++ = MI_OVERLAY_FLIP | MI_OVERLAY_ON;
+	*cs++ = overlay->flip_addr | OFC_UPDATE;
+	*cs++ = MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP;
+	*cs++ = MI_NOOP;
+	intel_ring_advance(rq, cs);
+
+	i915_request_add(rq);
+
+	return i915_active_wait(&overlay->last_flip);
+}
+
+static void intel_overlay_flip_prepare(struct intel_overlay *overlay,
+				       struct i915_vma *vma)
+{
+	enum pipe pipe = overlay->crtc->pipe;
+	struct intel_frontbuffer *frontbuffer = NULL;
+
+	drm_WARN_ON(&overlay->i915->drm, overlay->old_vma);
+
+	if (vma)
+		frontbuffer = intel_frontbuffer_get(vma->obj);
+
+	intel_frontbuffer_track(overlay->frontbuffer, frontbuffer,
+				INTEL_FRONTBUFFER_OVERLAY(pipe));
+
+	if (overlay->frontbuffer)
+		intel_frontbuffer_put(overlay->frontbuffer);
+	overlay->frontbuffer = frontbuffer;
+
+	intel_frontbuffer_flip_prepare(overlay->i915,
+				       INTEL_FRONTBUFFER_OVERLAY(pipe));
+
+	overlay->old_vma = overlay->vma;
+	if (vma)
+		overlay->vma = i915_vma_get(vma);
+	else
+		overlay->vma = NULL;
+}
+
+/* overlay needs to be enabled in OCMD reg */
+static int intel_overlay_continue(struct intel_overlay *overlay,
+				  struct i915_vma *vma,
+				  bool load_polyphase_filter)
+{
+	struct drm_i915_private *dev_priv = overlay->i915;
+	struct i915_request *rq;
+	u32 flip_addr = overlay->flip_addr;
+	u32 tmp, *cs;
+
+	drm_WARN_ON(&dev_priv->drm, !overlay->active);
+
+	if (load_polyphase_filter)
+		flip_addr |= OFC_UPDATE;
+
+	/* check for underruns */
+	tmp = intel_de_read(dev_priv, DOVSTA);
+	if (tmp & (1 << 17))
+		drm_dbg(&dev_priv->drm, "overlay underrun, DOVSTA: %x\n", tmp);
+
+	rq = alloc_request(overlay, NULL);
+	if (IS_ERR(rq))
+		return PTR_ERR(rq);
+
+	cs = intel_ring_begin(rq, 2);
+	if (IS_ERR(cs)) {
+		i915_request_add(rq);
+		return PTR_ERR(cs);
+	}
+
+	*cs++ = MI_OVERLAY_FLIP | MI_OVERLAY_CONTINUE;
+	*cs++ = flip_addr;
+	intel_ring_advance(rq, cs);
+
+	intel_overlay_flip_prepare(overlay, vma);
+	i915_request_add(rq);
+
+	return 0;
+}
+
+static void intel_overlay_release_old_vma(struct intel_overlay *overlay)
+{
+	struct i915_vma *vma;
+
+	vma = fetch_and_zero(&overlay->old_vma);
+	if (drm_WARN_ON(&overlay->i915->drm, !vma))
+		return;
+
+	intel_frontbuffer_flip_complete(overlay->i915,
+					INTEL_FRONTBUFFER_OVERLAY(overlay->crtc->pipe));
+
+	i915_vma_unpin(vma);
+	i915_vma_put(vma);
+}
+
+static void
+intel_overlay_release_old_vid_tail(struct intel_overlay *overlay)
+{
+	intel_overlay_release_old_vma(overlay);
+}
+
+static void intel_overlay_off_tail(struct intel_overlay *overlay)
+{
+	struct drm_i915_private *dev_priv = overlay->i915;
+
+	intel_overlay_release_old_vma(overlay);
+
+	overlay->crtc->overlay = NULL;
+	overlay->crtc = NULL;
+	overlay->active = false;
+
+	if (IS_I830(dev_priv))
+		i830_overlay_clock_gating(dev_priv, true);
+}
+
+static void intel_overlay_last_flip_retire(struct i915_active *active)
+{
+	struct intel_overlay *overlay =
+		container_of(active, typeof(*overlay), last_flip);
+
+	if (overlay->flip_complete)
+		overlay->flip_complete(overlay);
+}
+
+/* overlay needs to be disabled in OCMD reg */
+static int intel_overlay_off(struct intel_overlay *overlay)
+{
+	struct i915_request *rq;
+	u32 *cs, flip_addr = overlay->flip_addr;
+
+	drm_WARN_ON(&overlay->i915->drm, !overlay->active);
+
+	/* According to intel docs the overlay hw may hang (when switching
+	 * off) without loading the filter coeffs. It is however unclear whether
+	 * this applies to the disabling of the overlay or to the switching off
+	 * of the hw. Do it in both cases */
+	flip_addr |= OFC_UPDATE;
+
+	rq = alloc_request(overlay, intel_overlay_off_tail);
+	if (IS_ERR(rq))
+		return PTR_ERR(rq);
+
+	cs = intel_ring_begin(rq, 6);
+	if (IS_ERR(cs)) {
+		i915_request_add(rq);
+		return PTR_ERR(cs);
+	}
+
+	/* wait for overlay to go idle */
+	*cs++ = MI_OVERLAY_FLIP | MI_OVERLAY_CONTINUE;
+	*cs++ = flip_addr;
+	*cs++ = MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP;
+
+	/* turn overlay off */
+	*cs++ = MI_OVERLAY_FLIP | MI_OVERLAY_OFF;
+	*cs++ = flip_addr;
+	*cs++ = MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP;
+
+	intel_ring_advance(rq, cs);
+
+	intel_overlay_flip_prepare(overlay, NULL);
+	i915_request_add(rq);
+
+	return i915_active_wait(&overlay->last_flip);
+}
+
+/* recover from an interruption due to a signal
+ * We have to be careful not to repeat work forever an make forward progess. */
+static int intel_overlay_recover_from_interrupt(struct intel_overlay *overlay)
+{
+	return i915_active_wait(&overlay->last_flip);
+}
+
+/* Wait for pending overlay flip and release old frame.
+ * Needs to be called before the overlay register are changed
+ * via intel_overlay_(un)map_regs
+ */
+static int intel_overlay_release_old_vid(struct intel_overlay *overlay)
+{
+	struct drm_i915_private *dev_priv = overlay->i915;
+	struct i915_request *rq;
+	u32 *cs;
+
+	/*
+	 * Only wait if there is actually an old frame to release to
+	 * guarantee forward progress.
+	 */
+	if (!overlay->old_vma)
+		return 0;
+
+	if (!(intel_de_read(dev_priv, GEN2_ISR) & I915_OVERLAY_PLANE_FLIP_PENDING_INTERRUPT)) {
+		intel_overlay_release_old_vid_tail(overlay);
+		return 0;
+	}
+
+	rq = alloc_request(overlay, intel_overlay_release_old_vid_tail);
+	if (IS_ERR(rq))
+		return PTR_ERR(rq);
+
+	cs = intel_ring_begin(rq, 2);
+	if (IS_ERR(cs)) {
+		i915_request_add(rq);
+		return PTR_ERR(cs);
+	}
+
+	*cs++ = MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP;
+	*cs++ = MI_NOOP;
+	intel_ring_advance(rq, cs);
+
+	i915_request_add(rq);
+
+	return i915_active_wait(&overlay->last_flip);
+}
+
+void intel_overlay_reset(struct drm_i915_private *dev_priv)
+{
+	struct intel_overlay *overlay = dev_priv->display.overlay;
+
+	if (!overlay)
+		return;
+
+	overlay->old_xscale = 0;
+	overlay->old_yscale = 0;
+	overlay->crtc = NULL;
+	overlay->active = false;
+}
+
+static int packed_depth_bytes(u32 format)
+{
+	switch (format & I915_OVERLAY_DEPTH_MASK) {
+	case I915_OVERLAY_YUV422:
+		return 4;
+	case I915_OVERLAY_YUV411:
+		/* return 6; not implemented */
+	default:
+		return -EINVAL;
+	}
+}
+
+static int packed_width_bytes(u32 format, short width)
+{
+	switch (format & I915_OVERLAY_DEPTH_MASK) {
+	case I915_OVERLAY_YUV422:
+		return width << 1;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int uv_hsubsampling(u32 format)
+{
+	switch (format & I915_OVERLAY_DEPTH_MASK) {
+	case I915_OVERLAY_YUV422:
+	case I915_OVERLAY_YUV420:
+		return 2;
+	case I915_OVERLAY_YUV411:
+	case I915_OVERLAY_YUV410:
+		return 4;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int uv_vsubsampling(u32 format)
+{
+	switch (format & I915_OVERLAY_DEPTH_MASK) {
+	case I915_OVERLAY_YUV420:
+	case I915_OVERLAY_YUV410:
+		return 2;
+	case I915_OVERLAY_YUV422:
+	case I915_OVERLAY_YUV411:
+		return 1;
+	default:
+		return -EINVAL;
+	}
+}
+
+static u32 calc_swidthsw(struct drm_i915_private *dev_priv, u32 offset, u32 width)
+{
+	u32 sw;
+
+	if (DISPLAY_VER(dev_priv) == 2)
+		sw = ALIGN((offset & 31) + width, 32);
+	else
+		sw = ALIGN((offset & 63) + width, 64);
+
+	if (sw == 0)
+		return 0;
+
+	return (sw - 32) >> 3;
+}
+
+static const u16 y_static_hcoeffs[N_PHASES][N_HORIZ_Y_TAPS] = {
+	[ 0] = { 0x3000, 0xb4a0, 0x1930, 0x1920, 0xb4a0, },
+	[ 1] = { 0x3000, 0xb500, 0x19d0, 0x1880, 0xb440, },
+	[ 2] = { 0x3000, 0xb540, 0x1a88, 0x2f80, 0xb3e0, },
+	[ 3] = { 0x3000, 0xb580, 0x1b30, 0x2e20, 0xb380, },
+	[ 4] = { 0x3000, 0xb5c0, 0x1bd8, 0x2cc0, 0xb320, },
+	[ 5] = { 0x3020, 0xb5e0, 0x1c60, 0x2b80, 0xb2c0, },
+	[ 6] = { 0x3020, 0xb5e0, 0x1cf8, 0x2a20, 0xb260, },
+	[ 7] = { 0x3020, 0xb5e0, 0x1d80, 0x28e0, 0xb200, },
+	[ 8] = { 0x3020, 0xb5c0, 0x1e08, 0x3f40, 0xb1c0, },
+	[ 9] = { 0x3020, 0xb580, 0x1e78, 0x3ce0, 0xb160, },
+	[10] = { 0x3040, 0xb520, 0x1ed8, 0x3aa0, 0xb120, },
+	[11] = { 0x3040, 0xb4a0, 0x1f30, 0x3880, 0xb0e0, },
+	[12] = { 0x3040, 0xb400, 0x1f78, 0x3680, 0xb0a0, },
+	[13] = { 0x3020, 0xb340, 0x1fb8, 0x34a0, 0xb060, },
+	[14] = { 0x3020, 0xb240, 0x1fe0, 0x32e0, 0xb040, },
+	[15] = { 0x3020, 0xb140, 0x1ff8, 0x3160, 0xb020, },
+	[16] = { 0xb000, 0x3000, 0x0800, 0x3000, 0xb000, },
+};
+
+static const u16 uv_static_hcoeffs[N_PHASES][N_HORIZ_UV_TAPS] = {
+	[ 0] = { 0x3000, 0x1800, 0x1800, },
+	[ 1] = { 0xb000, 0x18d0, 0x2e60, },
+	[ 2] = { 0xb000, 0x1990, 0x2ce0, },
+	[ 3] = { 0xb020, 0x1a68, 0x2b40, },
+	[ 4] = { 0xb040, 0x1b20, 0x29e0, },
+	[ 5] = { 0xb060, 0x1bd8, 0x2880, },
+	[ 6] = { 0xb080, 0x1c88, 0x3e60, },
+	[ 7] = { 0xb0a0, 0x1d28, 0x3c00, },
+	[ 8] = { 0xb0c0, 0x1db8, 0x39e0, },
+	[ 9] = { 0xb0e0, 0x1e40, 0x37e0, },
+	[10] = { 0xb100, 0x1eb8, 0x3620, },
+	[11] = { 0xb100, 0x1f18, 0x34a0, },
+	[12] = { 0xb100, 0x1f68, 0x3360, },
+	[13] = { 0xb0e0, 0x1fa8, 0x3240, },
+	[14] = { 0xb0c0, 0x1fe0, 0x3140, },
+	[15] = { 0xb060, 0x1ff0, 0x30a0, },
+	[16] = { 0x3000, 0x0800, 0x3000, },
+};
+
+static void update_polyphase_filter(struct overlay_registers __iomem *regs)
+{
+	memcpy_toio(regs->Y_HCOEFS, y_static_hcoeffs, sizeof(y_static_hcoeffs));
+	memcpy_toio(regs->UV_HCOEFS, uv_static_hcoeffs,
+		    sizeof(uv_static_hcoeffs));
+}
+
+static bool update_scaling_factors(struct intel_overlay *overlay,
+				   struct overlay_registers __iomem *regs,
+				   struct drm_intel_overlay_put_image *params)
+{
+	/* fixed point with a 12 bit shift */
+	u32 xscale, yscale, xscale_UV, yscale_UV;
+#define FP_SHIFT 12
+#define FRACT_MASK 0xfff
+	bool scale_changed = false;
+	int uv_hscale = uv_hsubsampling(params->flags);
+	int uv_vscale = uv_vsubsampling(params->flags);
+
+	if (params->dst_width > 1)
+		xscale = ((params->src_scan_width - 1) << FP_SHIFT) /
+			params->dst_width;
+	else
+		xscale = 1 << FP_SHIFT;
+
+	if (params->dst_height > 1)
+		yscale = ((params->src_scan_height - 1) << FP_SHIFT) /
+			params->dst_height;
+	else
+		yscale = 1 << FP_SHIFT;
+
+	/*if (params->format & I915_OVERLAY_YUV_PLANAR) {*/
+	xscale_UV = xscale/uv_hscale;
+	yscale_UV = yscale/uv_vscale;
+	/* make the Y scale to UV scale ratio an exact multiply */
+	xscale = xscale_UV * uv_hscale;
+	yscale = yscale_UV * uv_vscale;
+	/*} else {
+	  xscale_UV = 0;
+	  yscale_UV = 0;
+	  }*/
+
+	if (xscale != overlay->old_xscale || yscale != overlay->old_yscale)
+		scale_changed = true;
+	overlay->old_xscale = xscale;
+	overlay->old_yscale = yscale;
+
+	iowrite32(((yscale & FRACT_MASK) << 20) |
+		  ((xscale >> FP_SHIFT)  << 16) |
+		  ((xscale & FRACT_MASK) << 3),
+		 &regs->YRGBSCALE);
+
+	iowrite32(((yscale_UV & FRACT_MASK) << 20) |
+		  ((xscale_UV >> FP_SHIFT)  << 16) |
+		  ((xscale_UV & FRACT_MASK) << 3),
+		 &regs->UVSCALE);
+
+	iowrite32((((yscale    >> FP_SHIFT) << 16) |
+		   ((yscale_UV >> FP_SHIFT) << 0)),
+		 &regs->UVSCALEV);
+
+	if (scale_changed)
+		update_polyphase_filter(regs);
+
+	return scale_changed;
+}
+
+static void update_colorkey(struct intel_overlay *overlay,
+			    struct overlay_registers __iomem *regs)
+{
+	const struct intel_plane_state *state =
+		to_intel_plane_state(overlay->crtc->base.primary->state);
+	u32 key = overlay->color_key;
+	u32 format = 0;
+	u32 flags = 0;
+
+	if (overlay->color_key_enabled)
+		flags |= DST_KEY_ENABLE;
+
+	if (state->uapi.visible)
+		format = state->hw.fb->format->format;
+
+	switch (format) {
+	case DRM_FORMAT_C8:
+		key = RGB8I_TO_COLORKEY(key);
+		flags |= CLK_RGB24_MASK;
+		break;
+	case DRM_FORMAT_XRGB1555:
+		key = RGB15_TO_COLORKEY(key);
+		flags |= CLK_RGB15_MASK;
+		break;
+	case DRM_FORMAT_RGB565:
+		key = RGB16_TO_COLORKEY(key);
+		flags |= CLK_RGB16_MASK;
+		break;
+	case DRM_FORMAT_XRGB2101010:
+	case DRM_FORMAT_XBGR2101010:
+		key = RGB30_TO_COLORKEY(key);
+		flags |= CLK_RGB24_MASK;
+		break;
+	default:
+		flags |= CLK_RGB24_MASK;
+		break;
+	}
+
+	iowrite32(key, &regs->DCLRKV);
+	iowrite32(flags, &regs->DCLRKM);
+}
+
+static u32 overlay_cmd_reg(struct drm_intel_overlay_put_image *params)
+{
+	u32 cmd = OCMD_ENABLE | OCMD_BUF_TYPE_FRAME | OCMD_BUFFER0;
+
+	if (params->flags & I915_OVERLAY_YUV_PLANAR) {
+		switch (params->flags & I915_OVERLAY_DEPTH_MASK) {
+		case I915_OVERLAY_YUV422:
+			cmd |= OCMD_YUV_422_PLANAR;
+			break;
+		case I915_OVERLAY_YUV420:
+			cmd |= OCMD_YUV_420_PLANAR;
+			break;
+		case I915_OVERLAY_YUV411:
+		case I915_OVERLAY_YUV410:
+			cmd |= OCMD_YUV_410_PLANAR;
+			break;
+		}
+	} else { /* YUV packed */
+		switch (params->flags & I915_OVERLAY_DEPTH_MASK) {
+		case I915_OVERLAY_YUV422:
+			cmd |= OCMD_YUV_422_PACKED;
+			break;
+		case I915_OVERLAY_YUV411:
+			cmd |= OCMD_YUV_411_PACKED;
+			break;
+		}
+
+		switch (params->flags & I915_OVERLAY_SWAP_MASK) {
+		case I915_OVERLAY_NO_SWAP:
+			break;
+		case I915_OVERLAY_UV_SWAP:
+			cmd |= OCMD_UV_SWAP;
+			break;
+		case I915_OVERLAY_Y_SWAP:
+			cmd |= OCMD_Y_SWAP;
+			break;
+		case I915_OVERLAY_Y_AND_UV_SWAP:
+			cmd |= OCMD_Y_AND_UV_SWAP;
+			break;
+		}
+	}
+
+	return cmd;
+}
+
+static struct i915_vma *intel_overlay_pin_fb(struct drm_i915_gem_object *new_bo)
+{
+	struct i915_gem_ww_ctx ww;
+	struct i915_vma *vma;
+	int ret;
+
+	i915_gem_ww_ctx_init(&ww, true);
+retry:
+	ret = i915_gem_object_lock(new_bo, &ww);
+	if (!ret) {
+		vma = i915_gem_object_pin_to_display_plane(new_bo, &ww, 0,
+							   NULL, PIN_MAPPABLE);
+		ret = PTR_ERR_OR_ZERO(vma);
+	}
+	if (ret == -EDEADLK) {
+		ret = i915_gem_ww_ctx_backoff(&ww);
+		if (!ret)
+			goto retry;
+	}
+	i915_gem_ww_ctx_fini(&ww);
+	if (ret)
+		return ERR_PTR(ret);
+
+	return vma;
+}
+
+static int intel_overlay_do_put_image(struct intel_overlay *overlay,
+				      struct drm_i915_gem_object *new_bo,
+				      struct drm_intel_overlay_put_image *params)
+{
+	struct overlay_registers __iomem *regs = overlay->regs;
+	struct drm_i915_private *dev_priv = overlay->i915;
+	u32 swidth, swidthsw, sheight, ostride;
+	enum pipe pipe = overlay->crtc->pipe;
+	bool scale_changed = false;
+	struct i915_vma *vma;
+	int ret, tmp_width;
+
+	drm_WARN_ON(&dev_priv->drm,
+		    !drm_modeset_is_locked(&dev_priv->drm.mode_config.connection_mutex));
+
+	ret = intel_overlay_release_old_vid(overlay);
+	if (ret != 0)
+		return ret;
+
+	atomic_inc(&dev_priv->gpu_error.pending_fb_pin);
+
+	vma = intel_overlay_pin_fb(new_bo);
+	if (IS_ERR(vma)) {
+		ret = PTR_ERR(vma);
+		goto out_pin_section;
+	}
+
+	i915_gem_object_flush_frontbuffer(new_bo, ORIGIN_DIRTYFB);
+
+	if (!overlay->active) {
+		const struct intel_crtc_state *crtc_state =
+			overlay->crtc->config;
+		u32 oconfig = 0;
+
+		if (crtc_state->gamma_enable &&
+		    crtc_state->gamma_mode == GAMMA_MODE_MODE_8BIT)
+			oconfig |= OCONF_CC_OUT_8BIT;
+		if (crtc_state->gamma_enable)
+			oconfig |= OCONF_GAMMA2_ENABLE;
+		if (DISPLAY_VER(dev_priv) == 4)
+			oconfig |= OCONF_CSC_MODE_BT709;
+		oconfig |= pipe == 0 ?
+			OCONF_PIPE_A : OCONF_PIPE_B;
+		iowrite32(oconfig, &regs->OCONFIG);
+
+		ret = intel_overlay_on(overlay);
+		if (ret != 0)
+			goto out_unpin;
+	}
+
+	iowrite32(params->dst_y << 16 | params->dst_x, &regs->DWINPOS);
+	iowrite32(params->dst_height << 16 | params->dst_width, &regs->DWINSZ);
+
+	if (params->flags & I915_OVERLAY_YUV_PACKED)
+		tmp_width = packed_width_bytes(params->flags,
+					       params->src_width);
+	else
+		tmp_width = params->src_width;
+
+	swidth = params->src_width;
+	swidthsw = calc_swidthsw(dev_priv, params->offset_Y, tmp_width);
+	sheight = params->src_height;
+	iowrite32(i915_ggtt_offset(vma) + params->offset_Y, &regs->OBUF_0Y);
+	ostride = params->stride_Y;
+
+	if (params->flags & I915_OVERLAY_YUV_PLANAR) {
+		int uv_hscale = uv_hsubsampling(params->flags);
+		int uv_vscale = uv_vsubsampling(params->flags);
+		u32 tmp_U, tmp_V;
+
+		swidth |= (params->src_width / uv_hscale) << 16;
+		sheight |= (params->src_height / uv_vscale) << 16;
+
+		tmp_U = calc_swidthsw(dev_priv, params->offset_U,
+				      params->src_width / uv_hscale);
+		tmp_V = calc_swidthsw(dev_priv, params->offset_V,
+				      params->src_width / uv_hscale);
+		swidthsw |= max(tmp_U, tmp_V) << 16;
+
+		iowrite32(i915_ggtt_offset(vma) + params->offset_U,
+			  &regs->OBUF_0U);
+		iowrite32(i915_ggtt_offset(vma) + params->offset_V,
+			  &regs->OBUF_0V);
+
+		ostride |= params->stride_UV << 16;
+	}
+
+	iowrite32(swidth, &regs->SWIDTH);
+	iowrite32(swidthsw, &regs->SWIDTHSW);
+	iowrite32(sheight, &regs->SHEIGHT);
+	iowrite32(ostride, &regs->OSTRIDE);
+
+	scale_changed = update_scaling_factors(overlay, regs, params);
+
+	update_colorkey(overlay, regs);
+
+	iowrite32(overlay_cmd_reg(params), &regs->OCMD);
+
+	ret = intel_overlay_continue(overlay, vma, scale_changed);
+	if (ret)
+		goto out_unpin;
+
+	return 0;
+
+out_unpin:
+	i915_vma_unpin(vma);
+out_pin_section:
+	atomic_dec(&dev_priv->gpu_error.pending_fb_pin);
+
+	return ret;
+}
+
+int intel_overlay_switch_off(struct intel_overlay *overlay)
+{
+	struct drm_i915_private *dev_priv = overlay->i915;
+	int ret;
+
+	drm_WARN_ON(&dev_priv->drm,
+		    !drm_modeset_is_locked(&dev_priv->drm.mode_config.connection_mutex));
+
+	ret = intel_overlay_recover_from_interrupt(overlay);
+	if (ret != 0)
+		return ret;
+
+	if (!overlay->active)
+		return 0;
+
+	ret = intel_overlay_release_old_vid(overlay);
+	if (ret != 0)
+		return ret;
+
+	iowrite32(0, &overlay->regs->OCMD);
+
+	return intel_overlay_off(overlay);
+}
+
+static int check_overlay_possible_on_crtc(struct intel_overlay *overlay,
+					  struct intel_crtc *crtc)
+{
+	if (!crtc->active)
+		return -EINVAL;
+
+	/* can't use the overlay with double wide pipe */
+	if (crtc->config->double_wide)
+		return -EINVAL;
+
+	return 0;
+}
+
+static void update_pfit_vscale_ratio(struct intel_overlay *overlay)
+{
+	struct drm_i915_private *dev_priv = overlay->i915;
+	u32 pfit_control = intel_de_read(dev_priv, PFIT_CONTROL);
+	u32 ratio;
+
+	/* XXX: This is not the same logic as in the xorg driver, but more in
+	 * line with the intel documentation for the i965
+	 */
+	if (DISPLAY_VER(dev_priv) >= 4) {
+		/* on i965 use the PGM reg to read out the autoscaler values */
+		ratio = intel_de_read(dev_priv, PFIT_PGM_RATIOS) >> PFIT_VERT_SCALE_SHIFT_965;
+	} else {
+		if (pfit_control & VERT_AUTO_SCALE)
+			ratio = intel_de_read(dev_priv, PFIT_AUTO_RATIOS);
+		else
+			ratio = intel_de_read(dev_priv, PFIT_PGM_RATIOS);
+		ratio >>= PFIT_VERT_SCALE_SHIFT;
+	}
+
+	overlay->pfit_vscale_ratio = ratio;
+}
+
+static int check_overlay_dst(struct intel_overlay *overlay,
+			     struct drm_intel_overlay_put_image *rec)
+{
+	const struct intel_crtc_state *crtc_state =
+		overlay->crtc->config;
+	struct drm_rect req, clipped;
+
+	drm_rect_init(&req, rec->dst_x, rec->dst_y,
+		      rec->dst_width, rec->dst_height);
+
+	clipped = req;
+	drm_rect_intersect(&clipped, &crtc_state->pipe_src);
+
+	if (!drm_rect_visible(&clipped) ||
+	    !drm_rect_equals(&clipped, &req))
+		return -EINVAL;
+
+	return 0;
+}
+
+static int check_overlay_scaling(struct drm_intel_overlay_put_image *rec)
+{
+	u32 tmp;
+
+	/* downscaling limit is 8.0 */
+	tmp = ((rec->src_scan_height << 16) / rec->dst_height) >> 16;
+	if (tmp > 7)
+		return -EINVAL;
+
+	tmp = ((rec->src_scan_width << 16) / rec->dst_width) >> 16;
+	if (tmp > 7)
+		return -EINVAL;
+
+	return 0;
+}
+
+static int check_overlay_src(struct drm_i915_private *dev_priv,
+			     struct drm_intel_overlay_put_image *rec,
+			     struct drm_i915_gem_object *new_bo)
+{
+	int uv_hscale = uv_hsubsampling(rec->flags);
+	int uv_vscale = uv_vsubsampling(rec->flags);
+	u32 stride_mask;
+	int depth;
+	u32 tmp;
+
+	/* check src dimensions */
+	if (IS_I845G(dev_priv) || IS_I830(dev_priv)) {
+		if (rec->src_height > IMAGE_MAX_HEIGHT_LEGACY ||
+		    rec->src_width  > IMAGE_MAX_WIDTH_LEGACY)
+			return -EINVAL;
+	} else {
+		if (rec->src_height > IMAGE_MAX_HEIGHT ||
+		    rec->src_width  > IMAGE_MAX_WIDTH)
+			return -EINVAL;
+	}
+
+	/* better safe than sorry, use 4 as the maximal subsampling ratio */
+	if (rec->src_height < N_VERT_Y_TAPS*4 ||
+	    rec->src_width  < N_HORIZ_Y_TAPS*4)
+		return -EINVAL;
+
+	/* check alignment constraints */
+	switch (rec->flags & I915_OVERLAY_TYPE_MASK) {
+	case I915_OVERLAY_RGB:
+		/* not implemented */
+		return -EINVAL;
+
+	case I915_OVERLAY_YUV_PACKED:
+		if (uv_vscale != 1)
+			return -EINVAL;
+
+		depth = packed_depth_bytes(rec->flags);
+		if (depth < 0)
+			return depth;
+
+		/* ignore UV planes */
+		rec->stride_UV = 0;
+		rec->offset_U = 0;
+		rec->offset_V = 0;
+		/* check pixel alignment */
+		if (rec->offset_Y % depth)
+			return -EINVAL;
+		break;
+
+	case I915_OVERLAY_YUV_PLANAR:
+		if (uv_vscale < 0 || uv_hscale < 0)
+			return -EINVAL;
+		/* no offset restrictions for planar formats */
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	if (rec->src_width % uv_hscale)
+		return -EINVAL;
+
+	/* stride checking */
+	if (IS_I830(dev_priv) || IS_I845G(dev_priv))
+		stride_mask = 255;
+	else
+		stride_mask = 63;
+
+	if (rec->stride_Y & stride_mask || rec->stride_UV & stride_mask)
+		return -EINVAL;
+	if (DISPLAY_VER(dev_priv) == 4 && rec->stride_Y < 512)
+		return -EINVAL;
+
+	tmp = (rec->flags & I915_OVERLAY_TYPE_MASK) == I915_OVERLAY_YUV_PLANAR ?
+		4096 : 8192;
+	if (rec->stride_Y > tmp || rec->stride_UV > 2*1024)
+		return -EINVAL;
+
+	/* check buffer dimensions */
+	switch (rec->flags & I915_OVERLAY_TYPE_MASK) {
+	case I915_OVERLAY_RGB:
+	case I915_OVERLAY_YUV_PACKED:
+		/* always 4 Y values per depth pixels */
+		if (packed_width_bytes(rec->flags, rec->src_width) > rec->stride_Y)
+			return -EINVAL;
+
+		tmp = rec->stride_Y*rec->src_height;
+		if (rec->offset_Y + tmp > new_bo->base.size)
+			return -EINVAL;
+		break;
+
+	case I915_OVERLAY_YUV_PLANAR:
+		if (rec->src_width > rec->stride_Y)
+			return -EINVAL;
+		if (rec->src_width/uv_hscale > rec->stride_UV)
+			return -EINVAL;
+
+		tmp = rec->stride_Y * rec->src_height;
+		if (rec->offset_Y + tmp > new_bo->base.size)
+			return -EINVAL;
+
+		tmp = rec->stride_UV * (rec->src_height / uv_vscale);
+		if (rec->offset_U + tmp > new_bo->base.size ||
+		    rec->offset_V + tmp > new_bo->base.size)
+			return -EINVAL;
+		break;
+	}
+
+	return 0;
+}
+
+int intel_overlay_put_image_ioctl(struct drm_device *dev, void *data,
+				  struct drm_file *file_priv)
+{
+	struct drm_intel_overlay_put_image *params = data;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_overlay *overlay;
+	struct drm_crtc *drmmode_crtc;
+	struct intel_crtc *crtc;
+	struct drm_i915_gem_object *new_bo;
+	int ret;
+
+	overlay = dev_priv->display.overlay;
+	if (!overlay) {
+		drm_dbg(&dev_priv->drm, "userspace bug: no overlay\n");
+		return -ENODEV;
+	}
+
+	if (!(params->flags & I915_OVERLAY_ENABLE)) {
+		drm_modeset_lock_all(dev);
+		ret = intel_overlay_switch_off(overlay);
+		drm_modeset_unlock_all(dev);
+
+		return ret;
+	}
+
+	drmmode_crtc = drm_crtc_find(dev, file_priv, params->crtc_id);
+	if (!drmmode_crtc)
+		return -ENOENT;
+	crtc = to_intel_crtc(drmmode_crtc);
+
+	new_bo = i915_gem_object_lookup(file_priv, params->bo_handle);
+	if (!new_bo)
+		return -ENOENT;
+
+	drm_modeset_lock_all(dev);
+
+	if (i915_gem_object_is_tiled(new_bo)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "buffer used for overlay image can not be tiled\n");
+		ret = -EINVAL;
+		goto out_unlock;
+	}
+
+	ret = intel_overlay_recover_from_interrupt(overlay);
+	if (ret != 0)
+		goto out_unlock;
+
+	if (overlay->crtc != crtc) {
+		ret = intel_overlay_switch_off(overlay);
+		if (ret != 0)
+			goto out_unlock;
+
+		ret = check_overlay_possible_on_crtc(overlay, crtc);
+		if (ret != 0)
+			goto out_unlock;
+
+		overlay->crtc = crtc;
+		crtc->overlay = overlay;
+
+		/* line too wide, i.e. one-line-mode */
+		if (drm_rect_width(&crtc->config->pipe_src) > 1024 &&
+		    crtc->config->gmch_pfit.control & PFIT_ENABLE) {
+			overlay->pfit_active = true;
+			update_pfit_vscale_ratio(overlay);
+		} else
+			overlay->pfit_active = false;
+	}
+
+	ret = check_overlay_dst(overlay, params);
+	if (ret != 0)
+		goto out_unlock;
+
+	if (overlay->pfit_active) {
+		params->dst_y = (((u32)params->dst_y << 12) /
+				 overlay->pfit_vscale_ratio);
+		/* shifting right rounds downwards, so add 1 */
+		params->dst_height = (((u32)params->dst_height << 12) /
+				 overlay->pfit_vscale_ratio) + 1;
+	}
+
+	if (params->src_scan_height > params->src_height ||
+	    params->src_scan_width > params->src_width) {
+		ret = -EINVAL;
+		goto out_unlock;
+	}
+
+	ret = check_overlay_src(dev_priv, params, new_bo);
+	if (ret != 0)
+		goto out_unlock;
+
+	/* Check scaling after src size to prevent a divide-by-zero. */
+	ret = check_overlay_scaling(params);
+	if (ret != 0)
+		goto out_unlock;
+
+	ret = intel_overlay_do_put_image(overlay, new_bo, params);
+	if (ret != 0)
+		goto out_unlock;
+
+	drm_modeset_unlock_all(dev);
+	i915_gem_object_put(new_bo);
+
+	return 0;
+
+out_unlock:
+	drm_modeset_unlock_all(dev);
+	i915_gem_object_put(new_bo);
+
+	return ret;
+}
+
+static void update_reg_attrs(struct intel_overlay *overlay,
+			     struct overlay_registers __iomem *regs)
+{
+	iowrite32((overlay->contrast << 18) | (overlay->brightness & 0xff),
+		  &regs->OCLRC0);
+	iowrite32(overlay->saturation, &regs->OCLRC1);
+}
+
+static bool check_gamma_bounds(u32 gamma1, u32 gamma2)
+{
+	int i;
+
+	if (gamma1 & 0xff000000 || gamma2 & 0xff000000)
+		return false;
+
+	for (i = 0; i < 3; i++) {
+		if (((gamma1 >> i*8) & 0xff) >= ((gamma2 >> i*8) & 0xff))
+			return false;
+	}
+
+	return true;
+}
+
+static bool check_gamma5_errata(u32 gamma5)
+{
+	int i;
+
+	for (i = 0; i < 3; i++) {
+		if (((gamma5 >> i*8) & 0xff) == 0x80)
+			return false;
+	}
+
+	return true;
+}
+
+static int check_gamma(struct drm_intel_overlay_attrs *attrs)
+{
+	if (!check_gamma_bounds(0, attrs->gamma0) ||
+	    !check_gamma_bounds(attrs->gamma0, attrs->gamma1) ||
+	    !check_gamma_bounds(attrs->gamma1, attrs->gamma2) ||
+	    !check_gamma_bounds(attrs->gamma2, attrs->gamma3) ||
+	    !check_gamma_bounds(attrs->gamma3, attrs->gamma4) ||
+	    !check_gamma_bounds(attrs->gamma4, attrs->gamma5) ||
+	    !check_gamma_bounds(attrs->gamma5, 0x00ffffff))
+		return -EINVAL;
+
+	if (!check_gamma5_errata(attrs->gamma5))
+		return -EINVAL;
+
+	return 0;
+}
+
+int intel_overlay_attrs_ioctl(struct drm_device *dev, void *data,
+			      struct drm_file *file_priv)
+{
+	struct drm_intel_overlay_attrs *attrs = data;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_overlay *overlay;
+	int ret;
+
+	overlay = dev_priv->display.overlay;
+	if (!overlay) {
+		drm_dbg(&dev_priv->drm, "userspace bug: no overlay\n");
+		return -ENODEV;
+	}
+
+	drm_modeset_lock_all(dev);
+
+	ret = -EINVAL;
+	if (!(attrs->flags & I915_OVERLAY_UPDATE_ATTRS)) {
+		attrs->color_key  = overlay->color_key;
+		attrs->brightness = overlay->brightness;
+		attrs->contrast   = overlay->contrast;
+		attrs->saturation = overlay->saturation;
+
+		if (DISPLAY_VER(dev_priv) != 2) {
+			attrs->gamma0 = intel_de_read(dev_priv, OGAMC0);
+			attrs->gamma1 = intel_de_read(dev_priv, OGAMC1);
+			attrs->gamma2 = intel_de_read(dev_priv, OGAMC2);
+			attrs->gamma3 = intel_de_read(dev_priv, OGAMC3);
+			attrs->gamma4 = intel_de_read(dev_priv, OGAMC4);
+			attrs->gamma5 = intel_de_read(dev_priv, OGAMC5);
+		}
+	} else {
+		if (attrs->brightness < -128 || attrs->brightness > 127)
+			goto out_unlock;
+		if (attrs->contrast > 255)
+			goto out_unlock;
+		if (attrs->saturation > 1023)
+			goto out_unlock;
+
+		overlay->color_key  = attrs->color_key;
+		overlay->brightness = attrs->brightness;
+		overlay->contrast   = attrs->contrast;
+		overlay->saturation = attrs->saturation;
+
+		update_reg_attrs(overlay, overlay->regs);
+
+		if (attrs->flags & I915_OVERLAY_UPDATE_GAMMA) {
+			if (DISPLAY_VER(dev_priv) == 2)
+				goto out_unlock;
+
+			if (overlay->active) {
+				ret = -EBUSY;
+				goto out_unlock;
+			}
+
+			ret = check_gamma(attrs);
+			if (ret)
+				goto out_unlock;
+
+			intel_de_write(dev_priv, OGAMC0, attrs->gamma0);
+			intel_de_write(dev_priv, OGAMC1, attrs->gamma1);
+			intel_de_write(dev_priv, OGAMC2, attrs->gamma2);
+			intel_de_write(dev_priv, OGAMC3, attrs->gamma3);
+			intel_de_write(dev_priv, OGAMC4, attrs->gamma4);
+			intel_de_write(dev_priv, OGAMC5, attrs->gamma5);
+		}
+	}
+	overlay->color_key_enabled = (attrs->flags & I915_OVERLAY_DISABLE_DEST_COLORKEY) == 0;
+
+	ret = 0;
+out_unlock:
+	drm_modeset_unlock_all(dev);
+
+	return ret;
+}
+
+static int get_registers(struct intel_overlay *overlay, bool use_phys)
+{
+	struct drm_i915_private *i915 = overlay->i915;
+	struct drm_i915_gem_object *obj;
+	struct i915_vma *vma;
+	int err;
+
+	obj = i915_gem_object_create_stolen(i915, PAGE_SIZE);
+	if (IS_ERR(obj))
+		obj = i915_gem_object_create_internal(i915, PAGE_SIZE);
+	if (IS_ERR(obj))
+		return PTR_ERR(obj);
+
+	vma = i915_gem_object_ggtt_pin(obj, NULL, 0, 0, PIN_MAPPABLE);
+	if (IS_ERR(vma)) {
+		err = PTR_ERR(vma);
+		goto err_put_bo;
+	}
+
+	if (use_phys)
+		overlay->flip_addr = sg_dma_address(obj->mm.pages->sgl);
+	else
+		overlay->flip_addr = i915_ggtt_offset(vma);
+	overlay->regs = i915_vma_pin_iomap(vma);
+	i915_vma_unpin(vma);
+
+	if (IS_ERR(overlay->regs)) {
+		err = PTR_ERR(overlay->regs);
+		goto err_put_bo;
+	}
+
+	overlay->reg_bo = obj;
+	return 0;
+
+err_put_bo:
+	i915_gem_object_put(obj);
+	return err;
+}
+
+void intel_overlay_setup(struct drm_i915_private *dev_priv)
+{
+	struct intel_overlay *overlay;
+	struct intel_engine_cs *engine;
+	int ret;
+
+	if (!HAS_OVERLAY(dev_priv))
+		return;
+
+	engine = to_gt(dev_priv)->engine[RCS0];
+	if (!engine || !engine->kernel_context)
+		return;
+
+	overlay = kzalloc(sizeof(*overlay), GFP_KERNEL);
+	if (!overlay)
+		return;
+
+	overlay->i915 = dev_priv;
+	overlay->context = engine->kernel_context;
+	overlay->color_key = 0x0101fe;
+	overlay->color_key_enabled = true;
+	overlay->brightness = -19;
+	overlay->contrast = 75;
+	overlay->saturation = 146;
+
+	i915_active_init(&overlay->last_flip,
+			 NULL, intel_overlay_last_flip_retire, 0);
+
+	ret = get_registers(overlay, OVERLAY_NEEDS_PHYSICAL(dev_priv));
+	if (ret)
+		goto out_free;
+
+	memset_io(overlay->regs, 0, sizeof(struct overlay_registers));
+	update_polyphase_filter(overlay->regs);
+	update_reg_attrs(overlay, overlay->regs);
+
+	dev_priv->display.overlay = overlay;
+	drm_info(&dev_priv->drm, "Initialized overlay support.\n");
+	return;
+
+out_free:
+	kfree(overlay);
+}
+
+void intel_overlay_cleanup(struct drm_i915_private *dev_priv)
+{
+	struct intel_overlay *overlay;
+
+	overlay = fetch_and_zero(&dev_priv->display.overlay);
+	if (!overlay)
+		return;
+
+	/*
+	 * The bo's should be free'd by the generic code already.
+	 * Furthermore modesetting teardown happens beforehand so the
+	 * hardware should be off already.
+	 */
+	drm_WARN_ON(&dev_priv->drm, overlay->active);
+
+	i915_gem_object_put(overlay->reg_bo);
+	i915_active_fini(&overlay->last_flip);
+
+	kfree(overlay);
+}
+
+#if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR)
+
+struct intel_overlay_error_state {
+	struct overlay_registers regs;
+	unsigned long base;
+	u32 dovsta;
+	u32 isr;
+};
+
+struct intel_overlay_error_state *
+intel_overlay_capture_error_state(struct drm_i915_private *dev_priv)
+{
+	struct intel_overlay *overlay = dev_priv->display.overlay;
+	struct intel_overlay_error_state *error;
+
+	if (!overlay || !overlay->active)
+		return NULL;
+
+	error = kmalloc(sizeof(*error), GFP_ATOMIC);
+	if (error == NULL)
+		return NULL;
+
+	error->dovsta = intel_de_read(dev_priv, DOVSTA);
+	error->isr = intel_de_read(dev_priv, GEN2_ISR);
+	error->base = overlay->flip_addr;
+
+	memcpy_fromio(&error->regs, overlay->regs, sizeof(error->regs));
+
+	return error;
+}
+
+void
+intel_overlay_print_error_state(struct drm_i915_error_state_buf *m,
+				struct intel_overlay_error_state *error)
+{
+	i915_error_printf(m, "Overlay, status: 0x%08x, interrupt: 0x%08x\n",
+			  error->dovsta, error->isr);
+	i915_error_printf(m, "  Register file at 0x%08lx:\n",
+			  error->base);
+
+#define P(x) i915_error_printf(m, "    " #x ":	0x%08x\n", error->regs.x)
+	P(OBUF_0Y);
+	P(OBUF_1Y);
+	P(OBUF_0U);
+	P(OBUF_0V);
+	P(OBUF_1U);
+	P(OBUF_1V);
+	P(OSTRIDE);
+	P(YRGB_VPH);
+	P(UV_VPH);
+	P(HORZ_PH);
+	P(INIT_PHS);
+	P(DWINPOS);
+	P(DWINSZ);
+	P(SWIDTH);
+	P(SWIDTHSW);
+	P(SHEIGHT);
+	P(YRGBSCALE);
+	P(UVSCALE);
+	P(OCLRC0);
+	P(OCLRC1);
+	P(DCLRKV);
+	P(DCLRKM);
+	P(SCLRKVH);
+	P(SCLRKVL);
+	P(SCLRKEN);
+	P(OCONFIG);
+	P(OCMD);
+	P(OSTART_0Y);
+	P(OSTART_1Y);
+	P(OSTART_0U);
+	P(OSTART_0V);
+	P(OSTART_1U);
+	P(OSTART_1V);
+	P(OTILEOFF_0Y);
+	P(OTILEOFF_1Y);
+	P(OTILEOFF_0U);
+	P(OTILEOFF_0V);
+	P(OTILEOFF_1U);
+	P(OTILEOFF_1V);
+	P(FASTHSCALE);
+	P(UVSCALEV);
+#undef P
+}
+
+#endif
diff --git a/drivers/gpu/drm/i915/display/intel_overlay.h b/drivers/gpu/drm/i915/display/intel_overlay.h
new file mode 100644
index 000000000..a167c28ac
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_overlay.h
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_OVERLAY_H__
+#define __INTEL_OVERLAY_H__
+
+struct drm_device;
+struct drm_file;
+struct drm_i915_error_state_buf;
+struct drm_i915_private;
+struct intel_overlay;
+struct intel_overlay_error_state;
+
+void intel_overlay_setup(struct drm_i915_private *dev_priv);
+void intel_overlay_cleanup(struct drm_i915_private *dev_priv);
+int intel_overlay_switch_off(struct intel_overlay *overlay);
+int intel_overlay_put_image_ioctl(struct drm_device *dev, void *data,
+				  struct drm_file *file_priv);
+int intel_overlay_attrs_ioctl(struct drm_device *dev, void *data,
+			      struct drm_file *file_priv);
+void intel_overlay_reset(struct drm_i915_private *dev_priv);
+struct intel_overlay_error_state *
+intel_overlay_capture_error_state(struct drm_i915_private *dev_priv);
+void intel_overlay_print_error_state(struct drm_i915_error_state_buf *e,
+				     struct intel_overlay_error_state *error);
+
+#endif /* __INTEL_OVERLAY_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_panel.c b/drivers/gpu/drm/i915/display/intel_panel.c
new file mode 100644
index 000000000..b50db0dd2
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_panel.c
@@ -0,0 +1,686 @@
+/*
+ * Copyright © 2006-2010 Intel Corporation
+ * Copyright (c) 2006 Dave Airlie <airlied@linux.ie>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *	Eric Anholt <eric@anholt.net>
+ *      Dave Airlie <airlied@linux.ie>
+ *      Jesse Barnes <jesse.barnes@intel.com>
+ *      Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include <linux/kernel.h>
+#include <linux/pwm.h>
+
+#include "intel_backlight.h"
+#include "intel_connector.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_drrs.h"
+#include "intel_panel.h"
+#include "intel_quirks.h"
+
+bool intel_panel_use_ssc(struct drm_i915_private *i915)
+{
+	if (i915->params.panel_use_ssc >= 0)
+		return i915->params.panel_use_ssc != 0;
+	return i915->display.vbt.lvds_use_ssc &&
+		!intel_has_quirk(i915, QUIRK_LVDS_SSC_DISABLE);
+}
+
+const struct drm_display_mode *
+intel_panel_preferred_fixed_mode(struct intel_connector *connector)
+{
+	return list_first_entry_or_null(&connector->panel.fixed_modes,
+					struct drm_display_mode, head);
+}
+
+const struct drm_display_mode *
+intel_panel_fixed_mode(struct intel_connector *connector,
+		       const struct drm_display_mode *mode)
+{
+	const struct drm_display_mode *fixed_mode, *best_mode = NULL;
+	int vrefresh = drm_mode_vrefresh(mode);
+
+	/* pick the fixed_mode that is closest in terms of vrefresh */
+	list_for_each_entry(fixed_mode, &connector->panel.fixed_modes, head) {
+		if (!best_mode ||
+		    abs(drm_mode_vrefresh(fixed_mode) - vrefresh) <
+		    abs(drm_mode_vrefresh(best_mode) - vrefresh))
+			best_mode = fixed_mode;
+	}
+
+	return best_mode;
+}
+
+static bool is_alt_drrs_mode(const struct drm_display_mode *mode,
+			     const struct drm_display_mode *preferred_mode)
+{
+	return drm_mode_match(mode, preferred_mode,
+			      DRM_MODE_MATCH_TIMINGS |
+			      DRM_MODE_MATCH_FLAGS |
+			      DRM_MODE_MATCH_3D_FLAGS) &&
+		mode->clock != preferred_mode->clock;
+}
+
+static bool is_alt_fixed_mode(const struct drm_display_mode *mode,
+			      const struct drm_display_mode *preferred_mode)
+{
+	u32 sync_flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NHSYNC |
+		DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_NVSYNC;
+
+	return (mode->flags & ~sync_flags) == (preferred_mode->flags & ~sync_flags) &&
+		mode->hdisplay == preferred_mode->hdisplay &&
+		mode->vdisplay == preferred_mode->vdisplay;
+}
+
+const struct drm_display_mode *
+intel_panel_downclock_mode(struct intel_connector *connector,
+			   const struct drm_display_mode *adjusted_mode)
+{
+	const struct drm_display_mode *fixed_mode, *best_mode = NULL;
+	int min_vrefresh = connector->panel.vbt.seamless_drrs_min_refresh_rate;
+	int max_vrefresh = drm_mode_vrefresh(adjusted_mode);
+
+	/* pick the fixed_mode with the lowest refresh rate */
+	list_for_each_entry(fixed_mode, &connector->panel.fixed_modes, head) {
+		int vrefresh = drm_mode_vrefresh(fixed_mode);
+
+		if (is_alt_drrs_mode(fixed_mode, adjusted_mode) &&
+		    vrefresh >= min_vrefresh && vrefresh < max_vrefresh) {
+			max_vrefresh = vrefresh;
+			best_mode = fixed_mode;
+		}
+	}
+
+	return best_mode;
+}
+
+const struct drm_display_mode *
+intel_panel_highest_mode(struct intel_connector *connector,
+			 const struct drm_display_mode *adjusted_mode)
+{
+	const struct drm_display_mode *fixed_mode, *best_mode = adjusted_mode;
+
+	/* pick the fixed_mode that has the highest clock */
+	list_for_each_entry(fixed_mode, &connector->panel.fixed_modes, head) {
+		if (fixed_mode->clock > best_mode->clock)
+			best_mode = fixed_mode;
+	}
+
+	return best_mode;
+}
+
+int intel_panel_get_modes(struct intel_connector *connector)
+{
+	const struct drm_display_mode *fixed_mode;
+	int num_modes = 0;
+
+	list_for_each_entry(fixed_mode, &connector->panel.fixed_modes, head) {
+		struct drm_display_mode *mode;
+
+		mode = drm_mode_duplicate(connector->base.dev, fixed_mode);
+		if (mode) {
+			drm_mode_probed_add(&connector->base, mode);
+			num_modes++;
+		}
+	}
+
+	return num_modes;
+}
+
+enum drrs_type intel_panel_drrs_type(struct intel_connector *connector)
+{
+	if (list_empty(&connector->panel.fixed_modes) ||
+	    list_is_singular(&connector->panel.fixed_modes))
+		return DRRS_TYPE_NONE;
+
+	return connector->panel.vbt.drrs_type;
+}
+
+int intel_panel_compute_config(struct intel_connector *connector,
+			       struct drm_display_mode *adjusted_mode)
+{
+	const struct drm_display_mode *fixed_mode =
+		intel_panel_fixed_mode(connector, adjusted_mode);
+
+	if (!fixed_mode)
+		return 0;
+
+	/*
+	 * We don't want to lie too much to the user about the refresh
+	 * rate they're going to get. But we have to allow a bit of latitude
+	 * for Xorg since it likes to automagically cook up modes with slightly
+	 * off refresh rates.
+	 */
+	if (abs(drm_mode_vrefresh(adjusted_mode) - drm_mode_vrefresh(fixed_mode)) > 1) {
+		drm_dbg_kms(connector->base.dev,
+			    "[CONNECTOR:%d:%s] Requested mode vrefresh (%d Hz) does not match fixed mode vrefresh (%d Hz)\n",
+			    connector->base.base.id, connector->base.name,
+			    drm_mode_vrefresh(adjusted_mode), drm_mode_vrefresh(fixed_mode));
+
+		return -EINVAL;
+	}
+
+	drm_mode_copy(adjusted_mode, fixed_mode);
+
+	drm_mode_set_crtcinfo(adjusted_mode, 0);
+
+	return 0;
+}
+
+static void intel_panel_add_edid_alt_fixed_modes(struct intel_connector *connector)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	const struct drm_display_mode *preferred_mode =
+		intel_panel_preferred_fixed_mode(connector);
+	struct drm_display_mode *mode, *next;
+
+	list_for_each_entry_safe(mode, next, &connector->base.probed_modes, head) {
+		if (!is_alt_fixed_mode(mode, preferred_mode))
+			continue;
+
+		drm_dbg_kms(&dev_priv->drm,
+			    "[CONNECTOR:%d:%s] using alternate EDID fixed mode: " DRM_MODE_FMT "\n",
+			    connector->base.base.id, connector->base.name,
+			    DRM_MODE_ARG(mode));
+
+		list_move_tail(&mode->head, &connector->panel.fixed_modes);
+	}
+}
+
+static void intel_panel_add_edid_preferred_mode(struct intel_connector *connector)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct drm_display_mode *scan, *fixed_mode = NULL;
+
+	if (list_empty(&connector->base.probed_modes))
+		return;
+
+	/* make sure the preferred mode is first */
+	list_for_each_entry(scan, &connector->base.probed_modes, head) {
+		if (scan->type & DRM_MODE_TYPE_PREFERRED) {
+			fixed_mode = scan;
+			break;
+		}
+	}
+
+	if (!fixed_mode)
+		fixed_mode = list_first_entry(&connector->base.probed_modes,
+					      typeof(*fixed_mode), head);
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "[CONNECTOR:%d:%s] using %s EDID fixed mode: " DRM_MODE_FMT "\n",
+		    connector->base.base.id, connector->base.name,
+		    fixed_mode->type & DRM_MODE_TYPE_PREFERRED ? "preferred" : "first",
+		    DRM_MODE_ARG(fixed_mode));
+
+	fixed_mode->type |= DRM_MODE_TYPE_PREFERRED;
+
+	list_move_tail(&fixed_mode->head, &connector->panel.fixed_modes);
+}
+
+static void intel_panel_destroy_probed_modes(struct intel_connector *connector)
+{
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+	struct drm_display_mode *mode, *next;
+
+	list_for_each_entry_safe(mode, next, &connector->base.probed_modes, head) {
+		drm_dbg_kms(&i915->drm,
+			    "[CONNECTOR:%d:%s] not using EDID mode: " DRM_MODE_FMT "\n",
+			    connector->base.base.id, connector->base.name,
+			    DRM_MODE_ARG(mode));
+		list_del(&mode->head);
+		drm_mode_destroy(&i915->drm, mode);
+	}
+}
+
+void intel_panel_add_edid_fixed_modes(struct intel_connector *connector,
+				      bool use_alt_fixed_modes)
+{
+	intel_panel_add_edid_preferred_mode(connector);
+	if (intel_panel_preferred_fixed_mode(connector) && use_alt_fixed_modes)
+		intel_panel_add_edid_alt_fixed_modes(connector);
+	intel_panel_destroy_probed_modes(connector);
+}
+
+static void intel_panel_add_fixed_mode(struct intel_connector *connector,
+				       struct drm_display_mode *fixed_mode,
+				       const char *type)
+{
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+	struct drm_display_info *info = &connector->base.display_info;
+
+	if (!fixed_mode)
+		return;
+
+	fixed_mode->type |= DRM_MODE_TYPE_PREFERRED | DRM_MODE_TYPE_DRIVER;
+
+	info->width_mm = fixed_mode->width_mm;
+	info->height_mm = fixed_mode->height_mm;
+
+	drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s] using %s fixed mode: " DRM_MODE_FMT "\n",
+		    connector->base.base.id, connector->base.name, type,
+		    DRM_MODE_ARG(fixed_mode));
+
+	list_add_tail(&fixed_mode->head, &connector->panel.fixed_modes);
+}
+
+void intel_panel_add_vbt_lfp_fixed_mode(struct intel_connector *connector)
+{
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+	const struct drm_display_mode *mode;
+
+	mode = connector->panel.vbt.lfp_lvds_vbt_mode;
+	if (!mode)
+		return;
+
+	intel_panel_add_fixed_mode(connector,
+				   drm_mode_duplicate(&i915->drm, mode),
+				   "VBT LFP");
+}
+
+void intel_panel_add_vbt_sdvo_fixed_mode(struct intel_connector *connector)
+{
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+	const struct drm_display_mode *mode;
+
+	mode = connector->panel.vbt.sdvo_lvds_vbt_mode;
+	if (!mode)
+		return;
+
+	intel_panel_add_fixed_mode(connector,
+				   drm_mode_duplicate(&i915->drm, mode),
+				   "VBT SDVO");
+}
+
+void intel_panel_add_encoder_fixed_mode(struct intel_connector *connector,
+					struct intel_encoder *encoder)
+{
+	intel_panel_add_fixed_mode(connector,
+				   intel_encoder_current_mode(encoder),
+				   "current (BIOS)");
+}
+
+/* adjusted_mode has been preset to be the panel's fixed mode */
+static int pch_panel_fitting(struct intel_crtc_state *crtc_state,
+			     const struct drm_connector_state *conn_state)
+{
+	const struct drm_display_mode *adjusted_mode =
+		&crtc_state->hw.adjusted_mode;
+	int pipe_src_w = drm_rect_width(&crtc_state->pipe_src);
+	int pipe_src_h = drm_rect_height(&crtc_state->pipe_src);
+	int x, y, width, height;
+
+	/* Native modes don't need fitting */
+	if (adjusted_mode->crtc_hdisplay == pipe_src_w &&
+	    adjusted_mode->crtc_vdisplay == pipe_src_h &&
+	    crtc_state->output_format != INTEL_OUTPUT_FORMAT_YCBCR420)
+		return 0;
+
+	switch (conn_state->scaling_mode) {
+	case DRM_MODE_SCALE_CENTER:
+		width = pipe_src_w;
+		height = pipe_src_h;
+		x = (adjusted_mode->crtc_hdisplay - width + 1)/2;
+		y = (adjusted_mode->crtc_vdisplay - height + 1)/2;
+		break;
+
+	case DRM_MODE_SCALE_ASPECT:
+		/* Scale but preserve the aspect ratio */
+		{
+			u32 scaled_width = adjusted_mode->crtc_hdisplay * pipe_src_h;
+			u32 scaled_height = pipe_src_w * adjusted_mode->crtc_vdisplay;
+			if (scaled_width > scaled_height) { /* pillar */
+				width = scaled_height / pipe_src_h;
+				if (width & 1)
+					width++;
+				x = (adjusted_mode->crtc_hdisplay - width + 1) / 2;
+				y = 0;
+				height = adjusted_mode->crtc_vdisplay;
+			} else if (scaled_width < scaled_height) { /* letter */
+				height = scaled_width / pipe_src_w;
+				if (height & 1)
+				    height++;
+				y = (adjusted_mode->crtc_vdisplay - height + 1) / 2;
+				x = 0;
+				width = adjusted_mode->crtc_hdisplay;
+			} else {
+				x = y = 0;
+				width = adjusted_mode->crtc_hdisplay;
+				height = adjusted_mode->crtc_vdisplay;
+			}
+		}
+		break;
+
+	case DRM_MODE_SCALE_NONE:
+		WARN_ON(adjusted_mode->crtc_hdisplay != pipe_src_w);
+		WARN_ON(adjusted_mode->crtc_vdisplay != pipe_src_h);
+		fallthrough;
+	case DRM_MODE_SCALE_FULLSCREEN:
+		x = y = 0;
+		width = adjusted_mode->crtc_hdisplay;
+		height = adjusted_mode->crtc_vdisplay;
+		break;
+
+	default:
+		MISSING_CASE(conn_state->scaling_mode);
+		return -EINVAL;
+	}
+
+	drm_rect_init(&crtc_state->pch_pfit.dst,
+		      x, y, width, height);
+	crtc_state->pch_pfit.enabled = true;
+
+	return 0;
+}
+
+static void
+centre_horizontally(struct drm_display_mode *adjusted_mode,
+		    int width)
+{
+	u32 border, sync_pos, blank_width, sync_width;
+
+	/* keep the hsync and hblank widths constant */
+	sync_width = adjusted_mode->crtc_hsync_end - adjusted_mode->crtc_hsync_start;
+	blank_width = adjusted_mode->crtc_hblank_end - adjusted_mode->crtc_hblank_start;
+	sync_pos = (blank_width - sync_width + 1) / 2;
+
+	border = (adjusted_mode->crtc_hdisplay - width + 1) / 2;
+	border += border & 1; /* make the border even */
+
+	adjusted_mode->crtc_hdisplay = width;
+	adjusted_mode->crtc_hblank_start = width + border;
+	adjusted_mode->crtc_hblank_end = adjusted_mode->crtc_hblank_start + blank_width;
+
+	adjusted_mode->crtc_hsync_start = adjusted_mode->crtc_hblank_start + sync_pos;
+	adjusted_mode->crtc_hsync_end = adjusted_mode->crtc_hsync_start + sync_width;
+}
+
+static void
+centre_vertically(struct drm_display_mode *adjusted_mode,
+		  int height)
+{
+	u32 border, sync_pos, blank_width, sync_width;
+
+	/* keep the vsync and vblank widths constant */
+	sync_width = adjusted_mode->crtc_vsync_end - adjusted_mode->crtc_vsync_start;
+	blank_width = adjusted_mode->crtc_vblank_end - adjusted_mode->crtc_vblank_start;
+	sync_pos = (blank_width - sync_width + 1) / 2;
+
+	border = (adjusted_mode->crtc_vdisplay - height + 1) / 2;
+
+	adjusted_mode->crtc_vdisplay = height;
+	adjusted_mode->crtc_vblank_start = height + border;
+	adjusted_mode->crtc_vblank_end = adjusted_mode->crtc_vblank_start + blank_width;
+
+	adjusted_mode->crtc_vsync_start = adjusted_mode->crtc_vblank_start + sync_pos;
+	adjusted_mode->crtc_vsync_end = adjusted_mode->crtc_vsync_start + sync_width;
+}
+
+static u32 panel_fitter_scaling(u32 source, u32 target)
+{
+	/*
+	 * Floating point operation is not supported. So the FACTOR
+	 * is defined, which can avoid the floating point computation
+	 * when calculating the panel ratio.
+	 */
+#define ACCURACY 12
+#define FACTOR (1 << ACCURACY)
+	u32 ratio = source * FACTOR / target;
+	return (FACTOR * ratio + FACTOR/2) / FACTOR;
+}
+
+static void i965_scale_aspect(struct intel_crtc_state *crtc_state,
+			      u32 *pfit_control)
+{
+	const struct drm_display_mode *adjusted_mode =
+		&crtc_state->hw.adjusted_mode;
+	int pipe_src_w = drm_rect_width(&crtc_state->pipe_src);
+	int pipe_src_h = drm_rect_height(&crtc_state->pipe_src);
+	u32 scaled_width = adjusted_mode->crtc_hdisplay * pipe_src_h;
+	u32 scaled_height = pipe_src_w * adjusted_mode->crtc_vdisplay;
+
+	/* 965+ is easy, it does everything in hw */
+	if (scaled_width > scaled_height)
+		*pfit_control |= PFIT_ENABLE |
+			PFIT_SCALING_PILLAR;
+	else if (scaled_width < scaled_height)
+		*pfit_control |= PFIT_ENABLE |
+			PFIT_SCALING_LETTER;
+	else if (adjusted_mode->crtc_hdisplay != pipe_src_w)
+		*pfit_control |= PFIT_ENABLE | PFIT_SCALING_AUTO;
+}
+
+static void i9xx_scale_aspect(struct intel_crtc_state *crtc_state,
+			      u32 *pfit_control, u32 *pfit_pgm_ratios,
+			      u32 *border)
+{
+	struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode;
+	int pipe_src_w = drm_rect_width(&crtc_state->pipe_src);
+	int pipe_src_h = drm_rect_height(&crtc_state->pipe_src);
+	u32 scaled_width = adjusted_mode->crtc_hdisplay * pipe_src_h;
+	u32 scaled_height = pipe_src_w * adjusted_mode->crtc_vdisplay;
+	u32 bits;
+
+	/*
+	 * For earlier chips we have to calculate the scaling
+	 * ratio by hand and program it into the
+	 * PFIT_PGM_RATIO register
+	 */
+	if (scaled_width > scaled_height) { /* pillar */
+		centre_horizontally(adjusted_mode,
+				    scaled_height / pipe_src_h);
+
+		*border = LVDS_BORDER_ENABLE;
+		if (pipe_src_h != adjusted_mode->crtc_vdisplay) {
+			bits = panel_fitter_scaling(pipe_src_h,
+						    adjusted_mode->crtc_vdisplay);
+
+			*pfit_pgm_ratios |= (bits << PFIT_HORIZ_SCALE_SHIFT |
+					     bits << PFIT_VERT_SCALE_SHIFT);
+			*pfit_control |= (PFIT_ENABLE |
+					  VERT_INTERP_BILINEAR |
+					  HORIZ_INTERP_BILINEAR);
+		}
+	} else if (scaled_width < scaled_height) { /* letter */
+		centre_vertically(adjusted_mode,
+				  scaled_width / pipe_src_w);
+
+		*border = LVDS_BORDER_ENABLE;
+		if (pipe_src_w != adjusted_mode->crtc_hdisplay) {
+			bits = panel_fitter_scaling(pipe_src_w,
+						    adjusted_mode->crtc_hdisplay);
+
+			*pfit_pgm_ratios |= (bits << PFIT_HORIZ_SCALE_SHIFT |
+					     bits << PFIT_VERT_SCALE_SHIFT);
+			*pfit_control |= (PFIT_ENABLE |
+					  VERT_INTERP_BILINEAR |
+					  HORIZ_INTERP_BILINEAR);
+		}
+	} else {
+		/* Aspects match, Let hw scale both directions */
+		*pfit_control |= (PFIT_ENABLE |
+				  VERT_AUTO_SCALE | HORIZ_AUTO_SCALE |
+				  VERT_INTERP_BILINEAR |
+				  HORIZ_INTERP_BILINEAR);
+	}
+}
+
+static int gmch_panel_fitting(struct intel_crtc_state *crtc_state,
+			      const struct drm_connector_state *conn_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	u32 pfit_control = 0, pfit_pgm_ratios = 0, border = 0;
+	struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode;
+	int pipe_src_w = drm_rect_width(&crtc_state->pipe_src);
+	int pipe_src_h = drm_rect_height(&crtc_state->pipe_src);
+
+	/* Native modes don't need fitting */
+	if (adjusted_mode->crtc_hdisplay == pipe_src_w &&
+	    adjusted_mode->crtc_vdisplay == pipe_src_h)
+		goto out;
+
+	switch (conn_state->scaling_mode) {
+	case DRM_MODE_SCALE_CENTER:
+		/*
+		 * For centered modes, we have to calculate border widths &
+		 * heights and modify the values programmed into the CRTC.
+		 */
+		centre_horizontally(adjusted_mode, pipe_src_w);
+		centre_vertically(adjusted_mode, pipe_src_h);
+		border = LVDS_BORDER_ENABLE;
+		break;
+	case DRM_MODE_SCALE_ASPECT:
+		/* Scale but preserve the aspect ratio */
+		if (DISPLAY_VER(dev_priv) >= 4)
+			i965_scale_aspect(crtc_state, &pfit_control);
+		else
+			i9xx_scale_aspect(crtc_state, &pfit_control,
+					  &pfit_pgm_ratios, &border);
+		break;
+	case DRM_MODE_SCALE_FULLSCREEN:
+		/*
+		 * Full scaling, even if it changes the aspect ratio.
+		 * Fortunately this is all done for us in hw.
+		 */
+		if (pipe_src_h != adjusted_mode->crtc_vdisplay ||
+		    pipe_src_w != adjusted_mode->crtc_hdisplay) {
+			pfit_control |= PFIT_ENABLE;
+			if (DISPLAY_VER(dev_priv) >= 4)
+				pfit_control |= PFIT_SCALING_AUTO;
+			else
+				pfit_control |= (VERT_AUTO_SCALE |
+						 VERT_INTERP_BILINEAR |
+						 HORIZ_AUTO_SCALE |
+						 HORIZ_INTERP_BILINEAR);
+		}
+		break;
+	default:
+		MISSING_CASE(conn_state->scaling_mode);
+		return -EINVAL;
+	}
+
+	/* 965+ wants fuzzy fitting */
+	/* FIXME: handle multiple panels by failing gracefully */
+	if (DISPLAY_VER(dev_priv) >= 4)
+		pfit_control |= PFIT_PIPE(crtc->pipe) | PFIT_FILTER_FUZZY;
+
+out:
+	if ((pfit_control & PFIT_ENABLE) == 0) {
+		pfit_control = 0;
+		pfit_pgm_ratios = 0;
+	}
+
+	/* Make sure pre-965 set dither correctly for 18bpp panels. */
+	if (DISPLAY_VER(dev_priv) < 4 && crtc_state->pipe_bpp == 18)
+		pfit_control |= PANEL_8TO6_DITHER_ENABLE;
+
+	crtc_state->gmch_pfit.control = pfit_control;
+	crtc_state->gmch_pfit.pgm_ratios = pfit_pgm_ratios;
+	crtc_state->gmch_pfit.lvds_border_bits = border;
+
+	return 0;
+}
+
+int intel_panel_fitting(struct intel_crtc_state *crtc_state,
+			const struct drm_connector_state *conn_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+
+	if (HAS_GMCH(i915))
+		return gmch_panel_fitting(crtc_state, conn_state);
+	else
+		return pch_panel_fitting(crtc_state, conn_state);
+}
+
+enum drm_connector_status
+intel_panel_detect(struct drm_connector *connector, bool force)
+{
+	struct drm_i915_private *i915 = to_i915(connector->dev);
+
+	if (!INTEL_DISPLAY_ENABLED(i915))
+		return connector_status_disconnected;
+
+	return connector_status_connected;
+}
+
+enum drm_mode_status
+intel_panel_mode_valid(struct intel_connector *connector,
+		       const struct drm_display_mode *mode)
+{
+	const struct drm_display_mode *fixed_mode =
+		intel_panel_fixed_mode(connector, mode);
+
+	if (!fixed_mode)
+		return MODE_OK;
+
+	if (mode->hdisplay != fixed_mode->hdisplay)
+		return MODE_PANEL;
+
+	if (mode->vdisplay != fixed_mode->vdisplay)
+		return MODE_PANEL;
+
+	if (drm_mode_vrefresh(mode) != drm_mode_vrefresh(fixed_mode))
+		return MODE_PANEL;
+
+	return MODE_OK;
+}
+
+void intel_panel_init_alloc(struct intel_connector *connector)
+{
+	struct intel_panel *panel = &connector->panel;
+
+	connector->panel.vbt.panel_type = -1;
+	INIT_LIST_HEAD(&panel->fixed_modes);
+}
+
+int intel_panel_init(struct intel_connector *connector)
+{
+	struct intel_panel *panel = &connector->panel;
+
+	intel_backlight_init_funcs(panel);
+
+	drm_dbg_kms(connector->base.dev,
+		    "[CONNECTOR:%d:%s] DRRS type: %s\n",
+		    connector->base.base.id, connector->base.name,
+		    intel_drrs_type_str(intel_panel_drrs_type(connector)));
+
+	return 0;
+}
+
+void intel_panel_fini(struct intel_connector *connector)
+{
+	struct intel_panel *panel = &connector->panel;
+	struct drm_display_mode *fixed_mode, *next;
+
+	intel_backlight_destroy(panel);
+
+	intel_bios_fini_panel(panel);
+
+	list_for_each_entry_safe(fixed_mode, next, &panel->fixed_modes, head) {
+		list_del(&fixed_mode->head);
+		drm_mode_destroy(connector->base.dev, fixed_mode);
+	}
+}
diff --git a/drivers/gpu/drm/i915/display/intel_panel.h b/drivers/gpu/drm/i915/display/intel_panel.h
new file mode 100644
index 000000000..4b51e1c51
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_panel.h
@@ -0,0 +1,54 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_PANEL_H__
+#define __INTEL_PANEL_H__
+
+#include <linux/types.h>
+
+enum drm_connector_status;
+enum drrs_type;
+struct drm_connector;
+struct drm_connector_state;
+struct drm_display_mode;
+struct drm_i915_private;
+struct intel_connector;
+struct intel_crtc_state;
+struct intel_encoder;
+
+void intel_panel_init_alloc(struct intel_connector *connector);
+int intel_panel_init(struct intel_connector *connector);
+void intel_panel_fini(struct intel_connector *connector);
+enum drm_connector_status
+intel_panel_detect(struct drm_connector *connector, bool force);
+bool intel_panel_use_ssc(struct drm_i915_private *i915);
+const struct drm_display_mode *
+intel_panel_preferred_fixed_mode(struct intel_connector *connector);
+const struct drm_display_mode *
+intel_panel_fixed_mode(struct intel_connector *connector,
+		       const struct drm_display_mode *mode);
+const struct drm_display_mode *
+intel_panel_downclock_mode(struct intel_connector *connector,
+			   const struct drm_display_mode *adjusted_mode);
+const struct drm_display_mode *
+intel_panel_highest_mode(struct intel_connector *connector,
+			 const struct drm_display_mode *adjusted_mode);
+int intel_panel_get_modes(struct intel_connector *connector);
+enum drrs_type intel_panel_drrs_type(struct intel_connector *connector);
+enum drm_mode_status
+intel_panel_mode_valid(struct intel_connector *connector,
+		       const struct drm_display_mode *mode);
+int intel_panel_fitting(struct intel_crtc_state *crtc_state,
+			const struct drm_connector_state *conn_state);
+int intel_panel_compute_config(struct intel_connector *connector,
+			       struct drm_display_mode *adjusted_mode);
+void intel_panel_add_edid_fixed_modes(struct intel_connector *connector,
+				      bool use_alt_fixed_modes);
+void intel_panel_add_vbt_lfp_fixed_mode(struct intel_connector *connector);
+void intel_panel_add_vbt_sdvo_fixed_mode(struct intel_connector *connector);
+void intel_panel_add_encoder_fixed_mode(struct intel_connector *connector,
+					struct intel_encoder *encoder);
+
+#endif /* __INTEL_PANEL_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_pch_display.c b/drivers/gpu/drm/i915/display/intel_pch_display.c
new file mode 100644
index 000000000..837152dca
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_pch_display.c
@@ -0,0 +1,650 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#include "g4x_dp.h"
+#include "intel_crt.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_fdi.h"
+#include "intel_lvds.h"
+#include "intel_pch_display.h"
+#include "intel_pch_refclk.h"
+#include "intel_pps.h"
+#include "intel_sdvo.h"
+
+bool intel_has_pch_trancoder(struct drm_i915_private *i915,
+			     enum pipe pch_transcoder)
+{
+	return HAS_PCH_IBX(i915) || HAS_PCH_CPT(i915) ||
+		(HAS_PCH_LPT_H(i915) && pch_transcoder == PIPE_A);
+}
+
+enum pipe intel_crtc_pch_transcoder(struct intel_crtc *crtc)
+{
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+
+	if (HAS_PCH_LPT(i915))
+		return PIPE_A;
+	else
+		return crtc->pipe;
+}
+
+static void assert_pch_dp_disabled(struct drm_i915_private *dev_priv,
+				   enum pipe pipe, enum port port,
+				   i915_reg_t dp_reg)
+{
+	enum pipe port_pipe;
+	bool state;
+
+	state = g4x_dp_port_enabled(dev_priv, dp_reg, port, &port_pipe);
+
+	I915_STATE_WARN(state && port_pipe == pipe,
+			"PCH DP %c enabled on transcoder %c, should be disabled\n",
+			port_name(port), pipe_name(pipe));
+
+	I915_STATE_WARN(HAS_PCH_IBX(dev_priv) && !state && port_pipe == PIPE_B,
+			"IBX PCH DP %c still using transcoder B\n",
+			port_name(port));
+}
+
+static void assert_pch_hdmi_disabled(struct drm_i915_private *dev_priv,
+				     enum pipe pipe, enum port port,
+				     i915_reg_t hdmi_reg)
+{
+	enum pipe port_pipe;
+	bool state;
+
+	state = intel_sdvo_port_enabled(dev_priv, hdmi_reg, &port_pipe);
+
+	I915_STATE_WARN(state && port_pipe == pipe,
+			"PCH HDMI %c enabled on transcoder %c, should be disabled\n",
+			port_name(port), pipe_name(pipe));
+
+	I915_STATE_WARN(HAS_PCH_IBX(dev_priv) && !state && port_pipe == PIPE_B,
+			"IBX PCH HDMI %c still using transcoder B\n",
+			port_name(port));
+}
+
+static void assert_pch_ports_disabled(struct drm_i915_private *dev_priv,
+				      enum pipe pipe)
+{
+	enum pipe port_pipe;
+
+	assert_pch_dp_disabled(dev_priv, pipe, PORT_B, PCH_DP_B);
+	assert_pch_dp_disabled(dev_priv, pipe, PORT_C, PCH_DP_C);
+	assert_pch_dp_disabled(dev_priv, pipe, PORT_D, PCH_DP_D);
+
+	I915_STATE_WARN(intel_crt_port_enabled(dev_priv, PCH_ADPA, &port_pipe) &&
+			port_pipe == pipe,
+			"PCH VGA enabled on transcoder %c, should be disabled\n",
+			pipe_name(pipe));
+
+	I915_STATE_WARN(intel_lvds_port_enabled(dev_priv, PCH_LVDS, &port_pipe) &&
+			port_pipe == pipe,
+			"PCH LVDS enabled on transcoder %c, should be disabled\n",
+			pipe_name(pipe));
+
+	/* PCH SDVOB multiplex with HDMIB */
+	assert_pch_hdmi_disabled(dev_priv, pipe, PORT_B, PCH_HDMIB);
+	assert_pch_hdmi_disabled(dev_priv, pipe, PORT_C, PCH_HDMIC);
+	assert_pch_hdmi_disabled(dev_priv, pipe, PORT_D, PCH_HDMID);
+}
+
+static void assert_pch_transcoder_disabled(struct drm_i915_private *dev_priv,
+					   enum pipe pipe)
+{
+	u32 val;
+	bool enabled;
+
+	val = intel_de_read(dev_priv, PCH_TRANSCONF(pipe));
+	enabled = !!(val & TRANS_ENABLE);
+	I915_STATE_WARN(enabled,
+			"transcoder assertion failed, should be off on pipe %c but is still active\n",
+			pipe_name(pipe));
+}
+
+static void ibx_sanitize_pch_hdmi_port(struct drm_i915_private *dev_priv,
+				       enum port port, i915_reg_t hdmi_reg)
+{
+	u32 val = intel_de_read(dev_priv, hdmi_reg);
+
+	if (val & SDVO_ENABLE ||
+	    (val & SDVO_PIPE_SEL_MASK) == SDVO_PIPE_SEL(PIPE_A))
+		return;
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "Sanitizing transcoder select for HDMI %c\n",
+		    port_name(port));
+
+	val &= ~SDVO_PIPE_SEL_MASK;
+	val |= SDVO_PIPE_SEL(PIPE_A);
+
+	intel_de_write(dev_priv, hdmi_reg, val);
+}
+
+static void ibx_sanitize_pch_dp_port(struct drm_i915_private *dev_priv,
+				     enum port port, i915_reg_t dp_reg)
+{
+	u32 val = intel_de_read(dev_priv, dp_reg);
+
+	if (val & DP_PORT_EN ||
+	    (val & DP_PIPE_SEL_MASK) == DP_PIPE_SEL(PIPE_A))
+		return;
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "Sanitizing transcoder select for DP %c\n",
+		    port_name(port));
+
+	val &= ~DP_PIPE_SEL_MASK;
+	val |= DP_PIPE_SEL(PIPE_A);
+
+	intel_de_write(dev_priv, dp_reg, val);
+}
+
+static void ibx_sanitize_pch_ports(struct drm_i915_private *dev_priv)
+{
+	/*
+	 * The BIOS may select transcoder B on some of the PCH
+	 * ports even it doesn't enable the port. This would trip
+	 * assert_pch_dp_disabled() and assert_pch_hdmi_disabled().
+	 * Sanitize the transcoder select bits to prevent that. We
+	 * assume that the BIOS never actually enabled the port,
+	 * because if it did we'd actually have to toggle the port
+	 * on and back off to make the transcoder A select stick
+	 * (see. intel_dp_link_down(), intel_disable_hdmi(),
+	 * intel_disable_sdvo()).
+	 */
+	ibx_sanitize_pch_dp_port(dev_priv, PORT_B, PCH_DP_B);
+	ibx_sanitize_pch_dp_port(dev_priv, PORT_C, PCH_DP_C);
+	ibx_sanitize_pch_dp_port(dev_priv, PORT_D, PCH_DP_D);
+
+	/* PCH SDVOB multiplex with HDMIB */
+	ibx_sanitize_pch_hdmi_port(dev_priv, PORT_B, PCH_HDMIB);
+	ibx_sanitize_pch_hdmi_port(dev_priv, PORT_C, PCH_HDMIC);
+	ibx_sanitize_pch_hdmi_port(dev_priv, PORT_D, PCH_HDMID);
+}
+
+static void intel_pch_transcoder_set_m1_n1(struct intel_crtc *crtc,
+					   const struct intel_link_m_n *m_n)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+
+	intel_set_m_n(dev_priv, m_n,
+		      PCH_TRANS_DATA_M1(pipe), PCH_TRANS_DATA_N1(pipe),
+		      PCH_TRANS_LINK_M1(pipe), PCH_TRANS_LINK_N1(pipe));
+}
+
+static void intel_pch_transcoder_set_m2_n2(struct intel_crtc *crtc,
+					   const struct intel_link_m_n *m_n)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+
+	intel_set_m_n(dev_priv, m_n,
+		      PCH_TRANS_DATA_M2(pipe), PCH_TRANS_DATA_N2(pipe),
+		      PCH_TRANS_LINK_M2(pipe), PCH_TRANS_LINK_N2(pipe));
+}
+
+void intel_pch_transcoder_get_m1_n1(struct intel_crtc *crtc,
+				    struct intel_link_m_n *m_n)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+
+	intel_get_m_n(dev_priv, m_n,
+		      PCH_TRANS_DATA_M1(pipe), PCH_TRANS_DATA_N1(pipe),
+		      PCH_TRANS_LINK_M1(pipe), PCH_TRANS_LINK_N1(pipe));
+}
+
+void intel_pch_transcoder_get_m2_n2(struct intel_crtc *crtc,
+				    struct intel_link_m_n *m_n)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+
+	intel_get_m_n(dev_priv, m_n,
+		      PCH_TRANS_DATA_M2(pipe), PCH_TRANS_DATA_N2(pipe),
+		      PCH_TRANS_LINK_M2(pipe), PCH_TRANS_LINK_N2(pipe));
+}
+
+static void ilk_pch_transcoder_set_timings(const struct intel_crtc_state *crtc_state,
+					   enum pipe pch_transcoder)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+
+	intel_de_write(dev_priv, PCH_TRANS_HTOTAL(pch_transcoder),
+		       intel_de_read(dev_priv, HTOTAL(cpu_transcoder)));
+	intel_de_write(dev_priv, PCH_TRANS_HBLANK(pch_transcoder),
+		       intel_de_read(dev_priv, HBLANK(cpu_transcoder)));
+	intel_de_write(dev_priv, PCH_TRANS_HSYNC(pch_transcoder),
+		       intel_de_read(dev_priv, HSYNC(cpu_transcoder)));
+
+	intel_de_write(dev_priv, PCH_TRANS_VTOTAL(pch_transcoder),
+		       intel_de_read(dev_priv, VTOTAL(cpu_transcoder)));
+	intel_de_write(dev_priv, PCH_TRANS_VBLANK(pch_transcoder),
+		       intel_de_read(dev_priv, VBLANK(cpu_transcoder)));
+	intel_de_write(dev_priv, PCH_TRANS_VSYNC(pch_transcoder),
+		       intel_de_read(dev_priv, VSYNC(cpu_transcoder)));
+	intel_de_write(dev_priv, PCH_TRANS_VSYNCSHIFT(pch_transcoder),
+		       intel_de_read(dev_priv, VSYNCSHIFT(cpu_transcoder)));
+}
+
+static void ilk_enable_pch_transcoder(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+	i915_reg_t reg;
+	u32 val, pipeconf_val;
+
+	/* Make sure PCH DPLL is enabled */
+	assert_shared_dpll_enabled(dev_priv, crtc_state->shared_dpll);
+
+	/* FDI must be feeding us bits for PCH ports */
+	assert_fdi_tx_enabled(dev_priv, pipe);
+	assert_fdi_rx_enabled(dev_priv, pipe);
+
+	if (HAS_PCH_CPT(dev_priv)) {
+		reg = TRANS_CHICKEN2(pipe);
+		val = intel_de_read(dev_priv, reg);
+		/*
+		 * Workaround: Set the timing override bit
+		 * before enabling the pch transcoder.
+		 */
+		val |= TRANS_CHICKEN2_TIMING_OVERRIDE;
+		/* Configure frame start delay to match the CPU */
+		val &= ~TRANS_CHICKEN2_FRAME_START_DELAY_MASK;
+		val |= TRANS_CHICKEN2_FRAME_START_DELAY(crtc_state->framestart_delay - 1);
+		intel_de_write(dev_priv, reg, val);
+	}
+
+	reg = PCH_TRANSCONF(pipe);
+	val = intel_de_read(dev_priv, reg);
+	pipeconf_val = intel_de_read(dev_priv, PIPECONF(pipe));
+
+	if (HAS_PCH_IBX(dev_priv)) {
+		/* Configure frame start delay to match the CPU */
+		val &= ~TRANS_FRAME_START_DELAY_MASK;
+		val |= TRANS_FRAME_START_DELAY(crtc_state->framestart_delay - 1);
+
+		/*
+		 * Make the BPC in transcoder be consistent with
+		 * that in pipeconf reg. For HDMI we must use 8bpc
+		 * here for both 8bpc and 12bpc.
+		 */
+		val &= ~PIPECONF_BPC_MASK;
+		if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+			val |= PIPECONF_BPC_8;
+		else
+			val |= pipeconf_val & PIPECONF_BPC_MASK;
+	}
+
+	val &= ~TRANS_INTERLACE_MASK;
+	if ((pipeconf_val & PIPECONF_INTERLACE_MASK_ILK) == PIPECONF_INTERLACE_IF_ID_ILK) {
+		if (HAS_PCH_IBX(dev_priv) &&
+		    intel_crtc_has_type(crtc_state, INTEL_OUTPUT_SDVO))
+			val |= TRANS_INTERLACE_LEGACY_VSYNC_IBX;
+		else
+			val |= TRANS_INTERLACE_INTERLACED;
+	} else {
+		val |= TRANS_INTERLACE_PROGRESSIVE;
+	}
+
+	intel_de_write(dev_priv, reg, val | TRANS_ENABLE);
+	if (intel_de_wait_for_set(dev_priv, reg, TRANS_STATE_ENABLE, 100))
+		drm_err(&dev_priv->drm, "failed to enable transcoder %c\n",
+			pipe_name(pipe));
+}
+
+static void ilk_disable_pch_transcoder(struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+	i915_reg_t reg;
+	u32 val;
+
+	/* FDI relies on the transcoder */
+	assert_fdi_tx_disabled(dev_priv, pipe);
+	assert_fdi_rx_disabled(dev_priv, pipe);
+
+	/* Ports must be off as well */
+	assert_pch_ports_disabled(dev_priv, pipe);
+
+	reg = PCH_TRANSCONF(pipe);
+	val = intel_de_read(dev_priv, reg);
+	val &= ~TRANS_ENABLE;
+	intel_de_write(dev_priv, reg, val);
+	/* wait for PCH transcoder off, transcoder state */
+	if (intel_de_wait_for_clear(dev_priv, reg, TRANS_STATE_ENABLE, 50))
+		drm_err(&dev_priv->drm, "failed to disable transcoder %c\n",
+			pipe_name(pipe));
+
+	if (HAS_PCH_CPT(dev_priv)) {
+		/* Workaround: Clear the timing override chicken bit again. */
+		reg = TRANS_CHICKEN2(pipe);
+		val = intel_de_read(dev_priv, reg);
+		val &= ~TRANS_CHICKEN2_TIMING_OVERRIDE;
+		intel_de_write(dev_priv, reg, val);
+	}
+}
+
+void ilk_pch_pre_enable(struct intel_atomic_state *state,
+			struct intel_crtc *crtc)
+{
+	const struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+
+	/*
+	 * Note: FDI PLL enabling _must_ be done before we enable the
+	 * cpu pipes, hence this is separate from all the other fdi/pch
+	 * enabling.
+	 */
+	ilk_fdi_pll_enable(crtc_state);
+}
+
+/*
+ * Enable PCH resources required for PCH ports:
+ *   - PCH PLLs
+ *   - FDI training & RX/TX
+ *   - update transcoder timings
+ *   - DP transcoding bits
+ *   - transcoder
+ */
+void ilk_pch_enable(struct intel_atomic_state *state,
+		    struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	const struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	enum pipe pipe = crtc->pipe;
+	u32 temp;
+
+	assert_pch_transcoder_disabled(dev_priv, pipe);
+
+	/* For PCH output, training FDI link */
+	intel_fdi_link_train(crtc, crtc_state);
+
+	/*
+	 * We need to program the right clock selection
+	 * before writing the pixel multiplier into the DPLL.
+	 */
+	if (HAS_PCH_CPT(dev_priv)) {
+		u32 sel;
+
+		temp = intel_de_read(dev_priv, PCH_DPLL_SEL);
+		temp |= TRANS_DPLL_ENABLE(pipe);
+		sel = TRANS_DPLLB_SEL(pipe);
+		if (crtc_state->shared_dpll ==
+		    intel_get_shared_dpll_by_id(dev_priv, DPLL_ID_PCH_PLL_B))
+			temp |= sel;
+		else
+			temp &= ~sel;
+		intel_de_write(dev_priv, PCH_DPLL_SEL, temp);
+	}
+
+	/*
+	 * XXX: pch pll's can be enabled any time before we enable the PCH
+	 * transcoder, and we actually should do this to not upset any PCH
+	 * transcoder that already use the clock when we share it.
+	 *
+	 * Note that enable_shared_dpll tries to do the right thing, but
+	 * get_shared_dpll unconditionally resets the pll - we need that
+	 * to have the right LVDS enable sequence.
+	 */
+	intel_enable_shared_dpll(crtc_state);
+
+	/* set transcoder timing, panel must allow it */
+	assert_pps_unlocked(dev_priv, pipe);
+	if (intel_crtc_has_dp_encoder(crtc_state)) {
+		intel_pch_transcoder_set_m1_n1(crtc, &crtc_state->dp_m_n);
+		intel_pch_transcoder_set_m2_n2(crtc, &crtc_state->dp_m2_n2);
+	}
+	ilk_pch_transcoder_set_timings(crtc_state, pipe);
+
+	intel_fdi_normal_train(crtc);
+
+	/* For PCH DP, enable TRANS_DP_CTL */
+	if (HAS_PCH_CPT(dev_priv) &&
+	    intel_crtc_has_dp_encoder(crtc_state)) {
+		const struct drm_display_mode *adjusted_mode =
+			&crtc_state->hw.adjusted_mode;
+		u32 bpc = (intel_de_read(dev_priv, PIPECONF(pipe)) & PIPECONF_BPC_MASK) >> 5;
+		i915_reg_t reg = TRANS_DP_CTL(pipe);
+		enum port port;
+
+		temp = intel_de_read(dev_priv, reg);
+		temp &= ~(TRANS_DP_PORT_SEL_MASK |
+			  TRANS_DP_VSYNC_ACTIVE_HIGH |
+			  TRANS_DP_HSYNC_ACTIVE_HIGH |
+			  TRANS_DP_BPC_MASK);
+		temp |= TRANS_DP_OUTPUT_ENABLE;
+		temp |= bpc << 9; /* same format but at 11:9 */
+
+		if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
+			temp |= TRANS_DP_HSYNC_ACTIVE_HIGH;
+		if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
+			temp |= TRANS_DP_VSYNC_ACTIVE_HIGH;
+
+		port = intel_get_crtc_new_encoder(state, crtc_state)->port;
+		drm_WARN_ON(&dev_priv->drm, port < PORT_B || port > PORT_D);
+		temp |= TRANS_DP_PORT_SEL(port);
+
+		intel_de_write(dev_priv, reg, temp);
+	}
+
+	ilk_enable_pch_transcoder(crtc_state);
+}
+
+void ilk_pch_disable(struct intel_atomic_state *state,
+		     struct intel_crtc *crtc)
+{
+	ilk_fdi_disable(crtc);
+}
+
+void ilk_pch_post_disable(struct intel_atomic_state *state,
+			  struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+
+	ilk_disable_pch_transcoder(crtc);
+
+	if (HAS_PCH_CPT(dev_priv)) {
+		i915_reg_t reg;
+		u32 temp;
+
+		/* disable TRANS_DP_CTL */
+		reg = TRANS_DP_CTL(pipe);
+		temp = intel_de_read(dev_priv, reg);
+		temp &= ~(TRANS_DP_OUTPUT_ENABLE |
+			  TRANS_DP_PORT_SEL_MASK);
+		temp |= TRANS_DP_PORT_SEL_NONE;
+		intel_de_write(dev_priv, reg, temp);
+
+		/* disable DPLL_SEL */
+		temp = intel_de_read(dev_priv, PCH_DPLL_SEL);
+		temp &= ~(TRANS_DPLL_ENABLE(pipe) | TRANS_DPLLB_SEL(pipe));
+		intel_de_write(dev_priv, PCH_DPLL_SEL, temp);
+	}
+
+	ilk_fdi_pll_disable(crtc);
+}
+
+static void ilk_pch_clock_get(struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+
+	/* read out port_clock from the DPLL */
+	i9xx_crtc_clock_get(crtc, crtc_state);
+
+	/*
+	 * In case there is an active pipe without active ports,
+	 * we may need some idea for the dotclock anyway.
+	 * Calculate one based on the FDI configuration.
+	 */
+	crtc_state->hw.adjusted_mode.crtc_clock =
+		intel_dotclock_calculate(intel_fdi_link_freq(dev_priv, crtc_state),
+					 &crtc_state->fdi_m_n);
+}
+
+void ilk_pch_get_config(struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	struct intel_shared_dpll *pll;
+	enum pipe pipe = crtc->pipe;
+	enum intel_dpll_id pll_id;
+	bool pll_active;
+	u32 tmp;
+
+	if ((intel_de_read(dev_priv, PCH_TRANSCONF(pipe)) & TRANS_ENABLE) == 0)
+		return;
+
+	crtc_state->has_pch_encoder = true;
+
+	tmp = intel_de_read(dev_priv, FDI_RX_CTL(pipe));
+	crtc_state->fdi_lanes = ((FDI_DP_PORT_WIDTH_MASK & tmp) >>
+				 FDI_DP_PORT_WIDTH_SHIFT) + 1;
+
+	intel_cpu_transcoder_get_m1_n1(crtc, crtc_state->cpu_transcoder,
+				       &crtc_state->fdi_m_n);
+
+	if (HAS_PCH_IBX(dev_priv)) {
+		/*
+		 * The pipe->pch transcoder and pch transcoder->pll
+		 * mapping is fixed.
+		 */
+		pll_id = (enum intel_dpll_id) pipe;
+	} else {
+		tmp = intel_de_read(dev_priv, PCH_DPLL_SEL);
+		if (tmp & TRANS_DPLLB_SEL(pipe))
+			pll_id = DPLL_ID_PCH_PLL_B;
+		else
+			pll_id = DPLL_ID_PCH_PLL_A;
+	}
+
+	crtc_state->shared_dpll = intel_get_shared_dpll_by_id(dev_priv, pll_id);
+	pll = crtc_state->shared_dpll;
+
+	pll_active = intel_dpll_get_hw_state(dev_priv, pll,
+					     &crtc_state->dpll_hw_state);
+	drm_WARN_ON(&dev_priv->drm, !pll_active);
+
+	tmp = crtc_state->dpll_hw_state.dpll;
+	crtc_state->pixel_multiplier =
+		((tmp & PLL_REF_SDVO_HDMI_MULTIPLIER_MASK)
+		 >> PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT) + 1;
+
+	ilk_pch_clock_get(crtc_state);
+}
+
+static void lpt_enable_pch_transcoder(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+	u32 val, pipeconf_val;
+
+	/* FDI must be feeding us bits for PCH ports */
+	assert_fdi_tx_enabled(dev_priv, (enum pipe) cpu_transcoder);
+	assert_fdi_rx_enabled(dev_priv, PIPE_A);
+
+	val = intel_de_read(dev_priv, TRANS_CHICKEN2(PIPE_A));
+	/* Workaround: set timing override bit. */
+	val |= TRANS_CHICKEN2_TIMING_OVERRIDE;
+	/* Configure frame start delay to match the CPU */
+	val &= ~TRANS_CHICKEN2_FRAME_START_DELAY_MASK;
+	val |= TRANS_CHICKEN2_FRAME_START_DELAY(crtc_state->framestart_delay - 1);
+	intel_de_write(dev_priv, TRANS_CHICKEN2(PIPE_A), val);
+
+	val = TRANS_ENABLE;
+	pipeconf_val = intel_de_read(dev_priv, PIPECONF(cpu_transcoder));
+
+	if ((pipeconf_val & PIPECONF_INTERLACE_MASK_HSW) == PIPECONF_INTERLACE_IF_ID_ILK)
+		val |= TRANS_INTERLACE_INTERLACED;
+	else
+		val |= TRANS_INTERLACE_PROGRESSIVE;
+
+	intel_de_write(dev_priv, LPT_TRANSCONF, val);
+	if (intel_de_wait_for_set(dev_priv, LPT_TRANSCONF,
+				  TRANS_STATE_ENABLE, 100))
+		drm_err(&dev_priv->drm, "Failed to enable PCH transcoder\n");
+}
+
+static void lpt_disable_pch_transcoder(struct drm_i915_private *dev_priv)
+{
+	u32 val;
+
+	val = intel_de_read(dev_priv, LPT_TRANSCONF);
+	val &= ~TRANS_ENABLE;
+	intel_de_write(dev_priv, LPT_TRANSCONF, val);
+	/* wait for PCH transcoder off, transcoder state */
+	if (intel_de_wait_for_clear(dev_priv, LPT_TRANSCONF,
+				    TRANS_STATE_ENABLE, 50))
+		drm_err(&dev_priv->drm, "Failed to disable PCH transcoder\n");
+
+	/* Workaround: clear timing override bit. */
+	val = intel_de_read(dev_priv, TRANS_CHICKEN2(PIPE_A));
+	val &= ~TRANS_CHICKEN2_TIMING_OVERRIDE;
+	intel_de_write(dev_priv, TRANS_CHICKEN2(PIPE_A), val);
+}
+
+void lpt_pch_enable(struct intel_atomic_state *state,
+		    struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	const struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+
+	assert_pch_transcoder_disabled(dev_priv, PIPE_A);
+
+	lpt_program_iclkip(crtc_state);
+
+	/* Set transcoder timing. */
+	ilk_pch_transcoder_set_timings(crtc_state, PIPE_A);
+
+	lpt_enable_pch_transcoder(crtc_state);
+}
+
+void lpt_pch_disable(struct intel_atomic_state *state,
+		     struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+
+	lpt_disable_pch_transcoder(dev_priv);
+
+	lpt_disable_iclkip(dev_priv);
+}
+
+void lpt_pch_get_config(struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	u32 tmp;
+
+	if ((intel_de_read(dev_priv, LPT_TRANSCONF) & TRANS_ENABLE) == 0)
+		return;
+
+	crtc_state->has_pch_encoder = true;
+
+	tmp = intel_de_read(dev_priv, FDI_RX_CTL(PIPE_A));
+	crtc_state->fdi_lanes = ((FDI_DP_PORT_WIDTH_MASK & tmp) >>
+				 FDI_DP_PORT_WIDTH_SHIFT) + 1;
+
+	intel_cpu_transcoder_get_m1_n1(crtc, crtc_state->cpu_transcoder,
+				       &crtc_state->fdi_m_n);
+
+	crtc_state->hw.adjusted_mode.crtc_clock = lpt_get_iclkip(dev_priv);
+}
+
+void intel_pch_sanitize(struct drm_i915_private *i915)
+{
+	if (HAS_PCH_IBX(i915))
+		ibx_sanitize_pch_ports(i915);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_pch_display.h b/drivers/gpu/drm/i915/display/intel_pch_display.h
new file mode 100644
index 000000000..41a63413c
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_pch_display.h
@@ -0,0 +1,45 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#ifndef _INTEL_PCH_DISPLAY_H_
+#define _INTEL_PCH_DISPLAY_H_
+
+#include <linux/types.h>
+
+enum pipe;
+struct drm_i915_private;
+struct intel_atomic_state;
+struct intel_crtc;
+struct intel_crtc_state;
+struct intel_link_m_n;
+
+bool intel_has_pch_trancoder(struct drm_i915_private *i915,
+			     enum pipe pch_transcoder);
+enum pipe intel_crtc_pch_transcoder(struct intel_crtc *crtc);
+
+void ilk_pch_pre_enable(struct intel_atomic_state *state,
+			struct intel_crtc *crtc);
+void ilk_pch_enable(struct intel_atomic_state *state,
+		    struct intel_crtc *crtc);
+void ilk_pch_disable(struct intel_atomic_state *state,
+		     struct intel_crtc *crtc);
+void ilk_pch_post_disable(struct intel_atomic_state *state,
+			  struct intel_crtc *crtc);
+void ilk_pch_get_config(struct intel_crtc_state *crtc_state);
+
+void lpt_pch_enable(struct intel_atomic_state *state,
+		    struct intel_crtc *crtc);
+void lpt_pch_disable(struct intel_atomic_state *state,
+		     struct intel_crtc *crtc);
+void lpt_pch_get_config(struct intel_crtc_state *crtc_state);
+
+void intel_pch_transcoder_get_m1_n1(struct intel_crtc *crtc,
+				    struct intel_link_m_n *m_n);
+void intel_pch_transcoder_get_m2_n2(struct intel_crtc *crtc,
+				    struct intel_link_m_n *m_n);
+
+void intel_pch_sanitize(struct drm_i915_private *i915);
+
+#endif
diff --git a/drivers/gpu/drm/i915/display/intel_pch_refclk.c b/drivers/gpu/drm/i915/display/intel_pch_refclk.c
new file mode 100644
index 000000000..a66097cdc
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_pch_refclk.c
@@ -0,0 +1,679 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_panel.h"
+#include "intel_pch_refclk.h"
+#include "intel_sbi.h"
+
+static void lpt_fdi_reset_mphy(struct drm_i915_private *dev_priv)
+{
+	u32 tmp;
+
+	tmp = intel_de_read(dev_priv, SOUTH_CHICKEN2);
+	tmp |= FDI_MPHY_IOSFSB_RESET_CTL;
+	intel_de_write(dev_priv, SOUTH_CHICKEN2, tmp);
+
+	if (wait_for_us(intel_de_read(dev_priv, SOUTH_CHICKEN2) &
+			FDI_MPHY_IOSFSB_RESET_STATUS, 100))
+		drm_err(&dev_priv->drm, "FDI mPHY reset assert timeout\n");
+
+	tmp = intel_de_read(dev_priv, SOUTH_CHICKEN2);
+	tmp &= ~FDI_MPHY_IOSFSB_RESET_CTL;
+	intel_de_write(dev_priv, SOUTH_CHICKEN2, tmp);
+
+	if (wait_for_us((intel_de_read(dev_priv, SOUTH_CHICKEN2) &
+			 FDI_MPHY_IOSFSB_RESET_STATUS) == 0, 100))
+		drm_err(&dev_priv->drm, "FDI mPHY reset de-assert timeout\n");
+}
+
+/* WaMPhyProgramming:hsw */
+static void lpt_fdi_program_mphy(struct drm_i915_private *dev_priv)
+{
+	u32 tmp;
+
+	lpt_fdi_reset_mphy(dev_priv);
+
+	tmp = intel_sbi_read(dev_priv, 0x8008, SBI_MPHY);
+	tmp &= ~(0xFF << 24);
+	tmp |= (0x12 << 24);
+	intel_sbi_write(dev_priv, 0x8008, tmp, SBI_MPHY);
+
+	tmp = intel_sbi_read(dev_priv, 0x2008, SBI_MPHY);
+	tmp |= (1 << 11);
+	intel_sbi_write(dev_priv, 0x2008, tmp, SBI_MPHY);
+
+	tmp = intel_sbi_read(dev_priv, 0x2108, SBI_MPHY);
+	tmp |= (1 << 11);
+	intel_sbi_write(dev_priv, 0x2108, tmp, SBI_MPHY);
+
+	tmp = intel_sbi_read(dev_priv, 0x206C, SBI_MPHY);
+	tmp |= (1 << 24) | (1 << 21) | (1 << 18);
+	intel_sbi_write(dev_priv, 0x206C, tmp, SBI_MPHY);
+
+	tmp = intel_sbi_read(dev_priv, 0x216C, SBI_MPHY);
+	tmp |= (1 << 24) | (1 << 21) | (1 << 18);
+	intel_sbi_write(dev_priv, 0x216C, tmp, SBI_MPHY);
+
+	tmp = intel_sbi_read(dev_priv, 0x2080, SBI_MPHY);
+	tmp &= ~(7 << 13);
+	tmp |= (5 << 13);
+	intel_sbi_write(dev_priv, 0x2080, tmp, SBI_MPHY);
+
+	tmp = intel_sbi_read(dev_priv, 0x2180, SBI_MPHY);
+	tmp &= ~(7 << 13);
+	tmp |= (5 << 13);
+	intel_sbi_write(dev_priv, 0x2180, tmp, SBI_MPHY);
+
+	tmp = intel_sbi_read(dev_priv, 0x208C, SBI_MPHY);
+	tmp &= ~0xFF;
+	tmp |= 0x1C;
+	intel_sbi_write(dev_priv, 0x208C, tmp, SBI_MPHY);
+
+	tmp = intel_sbi_read(dev_priv, 0x218C, SBI_MPHY);
+	tmp &= ~0xFF;
+	tmp |= 0x1C;
+	intel_sbi_write(dev_priv, 0x218C, tmp, SBI_MPHY);
+
+	tmp = intel_sbi_read(dev_priv, 0x2098, SBI_MPHY);
+	tmp &= ~(0xFF << 16);
+	tmp |= (0x1C << 16);
+	intel_sbi_write(dev_priv, 0x2098, tmp, SBI_MPHY);
+
+	tmp = intel_sbi_read(dev_priv, 0x2198, SBI_MPHY);
+	tmp &= ~(0xFF << 16);
+	tmp |= (0x1C << 16);
+	intel_sbi_write(dev_priv, 0x2198, tmp, SBI_MPHY);
+
+	tmp = intel_sbi_read(dev_priv, 0x20C4, SBI_MPHY);
+	tmp |= (1 << 27);
+	intel_sbi_write(dev_priv, 0x20C4, tmp, SBI_MPHY);
+
+	tmp = intel_sbi_read(dev_priv, 0x21C4, SBI_MPHY);
+	tmp |= (1 << 27);
+	intel_sbi_write(dev_priv, 0x21C4, tmp, SBI_MPHY);
+
+	tmp = intel_sbi_read(dev_priv, 0x20EC, SBI_MPHY);
+	tmp &= ~(0xF << 28);
+	tmp |= (4 << 28);
+	intel_sbi_write(dev_priv, 0x20EC, tmp, SBI_MPHY);
+
+	tmp = intel_sbi_read(dev_priv, 0x21EC, SBI_MPHY);
+	tmp &= ~(0xF << 28);
+	tmp |= (4 << 28);
+	intel_sbi_write(dev_priv, 0x21EC, tmp, SBI_MPHY);
+}
+
+void lpt_disable_iclkip(struct drm_i915_private *dev_priv)
+{
+	u32 temp;
+
+	intel_de_write(dev_priv, PIXCLK_GATE, PIXCLK_GATE_GATE);
+
+	mutex_lock(&dev_priv->sb_lock);
+
+	temp = intel_sbi_read(dev_priv, SBI_SSCCTL6, SBI_ICLK);
+	temp |= SBI_SSCCTL_DISABLE;
+	intel_sbi_write(dev_priv, SBI_SSCCTL6, temp, SBI_ICLK);
+
+	mutex_unlock(&dev_priv->sb_lock);
+}
+
+struct iclkip_params {
+	u32 iclk_virtual_root_freq;
+	u32 iclk_pi_range;
+	u32 divsel, phaseinc, auxdiv, phasedir, desired_divisor;
+};
+
+static void iclkip_params_init(struct iclkip_params *p)
+{
+	memset(p, 0, sizeof(*p));
+
+	p->iclk_virtual_root_freq = 172800 * 1000;
+	p->iclk_pi_range = 64;
+}
+
+static int lpt_iclkip_freq(struct iclkip_params *p)
+{
+	return DIV_ROUND_CLOSEST(p->iclk_virtual_root_freq,
+				 p->desired_divisor << p->auxdiv);
+}
+
+static void lpt_compute_iclkip(struct iclkip_params *p, int clock)
+{
+	iclkip_params_init(p);
+
+	/* The iCLK virtual clock root frequency is in MHz,
+	 * but the adjusted_mode->crtc_clock in KHz. To get the
+	 * divisors, it is necessary to divide one by another, so we
+	 * convert the virtual clock precision to KHz here for higher
+	 * precision.
+	 */
+	for (p->auxdiv = 0; p->auxdiv < 2; p->auxdiv++) {
+		p->desired_divisor = DIV_ROUND_CLOSEST(p->iclk_virtual_root_freq,
+						       clock << p->auxdiv);
+		p->divsel = (p->desired_divisor / p->iclk_pi_range) - 2;
+		p->phaseinc = p->desired_divisor % p->iclk_pi_range;
+
+		/*
+		 * Near 20MHz is a corner case which is
+		 * out of range for the 7-bit divisor
+		 */
+		if (p->divsel <= 0x7f)
+			break;
+	}
+}
+
+int lpt_iclkip(const struct intel_crtc_state *crtc_state)
+{
+	struct iclkip_params p;
+
+	lpt_compute_iclkip(&p, crtc_state->hw.adjusted_mode.crtc_clock);
+
+	return lpt_iclkip_freq(&p);
+}
+
+/* Program iCLKIP clock to the desired frequency */
+void lpt_program_iclkip(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	int clock = crtc_state->hw.adjusted_mode.crtc_clock;
+	struct iclkip_params p;
+	u32 temp;
+
+	lpt_disable_iclkip(dev_priv);
+
+	lpt_compute_iclkip(&p, clock);
+	drm_WARN_ON(&dev_priv->drm, lpt_iclkip_freq(&p) != clock);
+
+	/* This should not happen with any sane values */
+	drm_WARN_ON(&dev_priv->drm, SBI_SSCDIVINTPHASE_DIVSEL(p.divsel) &
+		    ~SBI_SSCDIVINTPHASE_DIVSEL_MASK);
+	drm_WARN_ON(&dev_priv->drm, SBI_SSCDIVINTPHASE_DIR(p.phasedir) &
+		    ~SBI_SSCDIVINTPHASE_INCVAL_MASK);
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "iCLKIP clock: found settings for %dKHz refresh rate: auxdiv=%x, divsel=%x, phasedir=%x, phaseinc=%x\n",
+		    clock, p.auxdiv, p.divsel, p.phasedir, p.phaseinc);
+
+	mutex_lock(&dev_priv->sb_lock);
+
+	/* Program SSCDIVINTPHASE6 */
+	temp = intel_sbi_read(dev_priv, SBI_SSCDIVINTPHASE6, SBI_ICLK);
+	temp &= ~SBI_SSCDIVINTPHASE_DIVSEL_MASK;
+	temp |= SBI_SSCDIVINTPHASE_DIVSEL(p.divsel);
+	temp &= ~SBI_SSCDIVINTPHASE_INCVAL_MASK;
+	temp |= SBI_SSCDIVINTPHASE_INCVAL(p.phaseinc);
+	temp |= SBI_SSCDIVINTPHASE_DIR(p.phasedir);
+	temp |= SBI_SSCDIVINTPHASE_PROPAGATE;
+	intel_sbi_write(dev_priv, SBI_SSCDIVINTPHASE6, temp, SBI_ICLK);
+
+	/* Program SSCAUXDIV */
+	temp = intel_sbi_read(dev_priv, SBI_SSCAUXDIV6, SBI_ICLK);
+	temp &= ~SBI_SSCAUXDIV_FINALDIV2SEL(1);
+	temp |= SBI_SSCAUXDIV_FINALDIV2SEL(p.auxdiv);
+	intel_sbi_write(dev_priv, SBI_SSCAUXDIV6, temp, SBI_ICLK);
+
+	/* Enable modulator and associated divider */
+	temp = intel_sbi_read(dev_priv, SBI_SSCCTL6, SBI_ICLK);
+	temp &= ~SBI_SSCCTL_DISABLE;
+	intel_sbi_write(dev_priv, SBI_SSCCTL6, temp, SBI_ICLK);
+
+	mutex_unlock(&dev_priv->sb_lock);
+
+	/* Wait for initialization time */
+	udelay(24);
+
+	intel_de_write(dev_priv, PIXCLK_GATE, PIXCLK_GATE_UNGATE);
+}
+
+int lpt_get_iclkip(struct drm_i915_private *dev_priv)
+{
+	struct iclkip_params p;
+	u32 temp;
+
+	if ((intel_de_read(dev_priv, PIXCLK_GATE) & PIXCLK_GATE_UNGATE) == 0)
+		return 0;
+
+	iclkip_params_init(&p);
+
+	mutex_lock(&dev_priv->sb_lock);
+
+	temp = intel_sbi_read(dev_priv, SBI_SSCCTL6, SBI_ICLK);
+	if (temp & SBI_SSCCTL_DISABLE) {
+		mutex_unlock(&dev_priv->sb_lock);
+		return 0;
+	}
+
+	temp = intel_sbi_read(dev_priv, SBI_SSCDIVINTPHASE6, SBI_ICLK);
+	p.divsel = (temp & SBI_SSCDIVINTPHASE_DIVSEL_MASK) >>
+		SBI_SSCDIVINTPHASE_DIVSEL_SHIFT;
+	p.phaseinc = (temp & SBI_SSCDIVINTPHASE_INCVAL_MASK) >>
+		SBI_SSCDIVINTPHASE_INCVAL_SHIFT;
+
+	temp = intel_sbi_read(dev_priv, SBI_SSCAUXDIV6, SBI_ICLK);
+	p.auxdiv = (temp & SBI_SSCAUXDIV_FINALDIV2SEL_MASK) >>
+		SBI_SSCAUXDIV_FINALDIV2SEL_SHIFT;
+
+	mutex_unlock(&dev_priv->sb_lock);
+
+	p.desired_divisor = (p.divsel + 2) * p.iclk_pi_range + p.phaseinc;
+
+	return lpt_iclkip_freq(&p);
+}
+
+/* Implements 3 different sequences from BSpec chapter "Display iCLK
+ * Programming" based on the parameters passed:
+ * - Sequence to enable CLKOUT_DP
+ * - Sequence to enable CLKOUT_DP without spread
+ * - Sequence to enable CLKOUT_DP for FDI usage and configure PCH FDI I/O
+ */
+static void lpt_enable_clkout_dp(struct drm_i915_private *dev_priv,
+				 bool with_spread, bool with_fdi)
+{
+	u32 reg, tmp;
+
+	if (drm_WARN(&dev_priv->drm, with_fdi && !with_spread,
+		     "FDI requires downspread\n"))
+		with_spread = true;
+	if (drm_WARN(&dev_priv->drm, HAS_PCH_LPT_LP(dev_priv) &&
+		     with_fdi, "LP PCH doesn't have FDI\n"))
+		with_fdi = false;
+
+	mutex_lock(&dev_priv->sb_lock);
+
+	tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
+	tmp &= ~SBI_SSCCTL_DISABLE;
+	tmp |= SBI_SSCCTL_PATHALT;
+	intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
+
+	udelay(24);
+
+	if (with_spread) {
+		tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
+		tmp &= ~SBI_SSCCTL_PATHALT;
+		intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
+
+		if (with_fdi)
+			lpt_fdi_program_mphy(dev_priv);
+	}
+
+	reg = HAS_PCH_LPT_LP(dev_priv) ? SBI_GEN0 : SBI_DBUFF0;
+	tmp = intel_sbi_read(dev_priv, reg, SBI_ICLK);
+	tmp |= SBI_GEN0_CFG_BUFFENABLE_DISABLE;
+	intel_sbi_write(dev_priv, reg, tmp, SBI_ICLK);
+
+	mutex_unlock(&dev_priv->sb_lock);
+}
+
+/* Sequence to disable CLKOUT_DP */
+void lpt_disable_clkout_dp(struct drm_i915_private *dev_priv)
+{
+	u32 reg, tmp;
+
+	mutex_lock(&dev_priv->sb_lock);
+
+	reg = HAS_PCH_LPT_LP(dev_priv) ? SBI_GEN0 : SBI_DBUFF0;
+	tmp = intel_sbi_read(dev_priv, reg, SBI_ICLK);
+	tmp &= ~SBI_GEN0_CFG_BUFFENABLE_DISABLE;
+	intel_sbi_write(dev_priv, reg, tmp, SBI_ICLK);
+
+	tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
+	if (!(tmp & SBI_SSCCTL_DISABLE)) {
+		if (!(tmp & SBI_SSCCTL_PATHALT)) {
+			tmp |= SBI_SSCCTL_PATHALT;
+			intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
+			udelay(32);
+		}
+		tmp |= SBI_SSCCTL_DISABLE;
+		intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
+	}
+
+	mutex_unlock(&dev_priv->sb_lock);
+}
+
+#define BEND_IDX(steps) ((50 + (steps)) / 5)
+
+static const u16 sscdivintphase[] = {
+	[BEND_IDX( 50)] = 0x3B23,
+	[BEND_IDX( 45)] = 0x3B23,
+	[BEND_IDX( 40)] = 0x3C23,
+	[BEND_IDX( 35)] = 0x3C23,
+	[BEND_IDX( 30)] = 0x3D23,
+	[BEND_IDX( 25)] = 0x3D23,
+	[BEND_IDX( 20)] = 0x3E23,
+	[BEND_IDX( 15)] = 0x3E23,
+	[BEND_IDX( 10)] = 0x3F23,
+	[BEND_IDX(  5)] = 0x3F23,
+	[BEND_IDX(  0)] = 0x0025,
+	[BEND_IDX( -5)] = 0x0025,
+	[BEND_IDX(-10)] = 0x0125,
+	[BEND_IDX(-15)] = 0x0125,
+	[BEND_IDX(-20)] = 0x0225,
+	[BEND_IDX(-25)] = 0x0225,
+	[BEND_IDX(-30)] = 0x0325,
+	[BEND_IDX(-35)] = 0x0325,
+	[BEND_IDX(-40)] = 0x0425,
+	[BEND_IDX(-45)] = 0x0425,
+	[BEND_IDX(-50)] = 0x0525,
+};
+
+/*
+ * Bend CLKOUT_DP
+ * steps -50 to 50 inclusive, in steps of 5
+ * < 0 slow down the clock, > 0 speed up the clock, 0 == no bend (135MHz)
+ * change in clock period = -(steps / 10) * 5.787 ps
+ */
+static void lpt_bend_clkout_dp(struct drm_i915_private *dev_priv, int steps)
+{
+	u32 tmp;
+	int idx = BEND_IDX(steps);
+
+	if (drm_WARN_ON(&dev_priv->drm, steps % 5 != 0))
+		return;
+
+	if (drm_WARN_ON(&dev_priv->drm, idx >= ARRAY_SIZE(sscdivintphase)))
+		return;
+
+	mutex_lock(&dev_priv->sb_lock);
+
+	if (steps % 10 != 0)
+		tmp = 0xAAAAAAAB;
+	else
+		tmp = 0x00000000;
+	intel_sbi_write(dev_priv, SBI_SSCDITHPHASE, tmp, SBI_ICLK);
+
+	tmp = intel_sbi_read(dev_priv, SBI_SSCDIVINTPHASE, SBI_ICLK);
+	tmp &= 0xffff0000;
+	tmp |= sscdivintphase[idx];
+	intel_sbi_write(dev_priv, SBI_SSCDIVINTPHASE, tmp, SBI_ICLK);
+
+	mutex_unlock(&dev_priv->sb_lock);
+}
+
+#undef BEND_IDX
+
+static bool spll_uses_pch_ssc(struct drm_i915_private *dev_priv)
+{
+	u32 fuse_strap = intel_de_read(dev_priv, FUSE_STRAP);
+	u32 ctl = intel_de_read(dev_priv, SPLL_CTL);
+
+	if ((ctl & SPLL_PLL_ENABLE) == 0)
+		return false;
+
+	if ((ctl & SPLL_REF_MASK) == SPLL_REF_MUXED_SSC &&
+	    (fuse_strap & HSW_CPU_SSC_ENABLE) == 0)
+		return true;
+
+	if (IS_BROADWELL(dev_priv) &&
+	    (ctl & SPLL_REF_MASK) == SPLL_REF_PCH_SSC_BDW)
+		return true;
+
+	return false;
+}
+
+static bool wrpll_uses_pch_ssc(struct drm_i915_private *dev_priv,
+			       enum intel_dpll_id id)
+{
+	u32 fuse_strap = intel_de_read(dev_priv, FUSE_STRAP);
+	u32 ctl = intel_de_read(dev_priv, WRPLL_CTL(id));
+
+	if ((ctl & WRPLL_PLL_ENABLE) == 0)
+		return false;
+
+	if ((ctl & WRPLL_REF_MASK) == WRPLL_REF_PCH_SSC)
+		return true;
+
+	if ((IS_BROADWELL(dev_priv) || IS_HSW_ULT(dev_priv)) &&
+	    (ctl & WRPLL_REF_MASK) == WRPLL_REF_MUXED_SSC_BDW &&
+	    (fuse_strap & HSW_CPU_SSC_ENABLE) == 0)
+		return true;
+
+	return false;
+}
+
+static void lpt_init_pch_refclk(struct drm_i915_private *dev_priv)
+{
+	struct intel_encoder *encoder;
+	bool has_fdi = false;
+
+	for_each_intel_encoder(&dev_priv->drm, encoder) {
+		switch (encoder->type) {
+		case INTEL_OUTPUT_ANALOG:
+			has_fdi = true;
+			break;
+		default:
+			break;
+		}
+	}
+
+	/*
+	 * The BIOS may have decided to use the PCH SSC
+	 * reference so we must not disable it until the
+	 * relevant PLLs have stopped relying on it. We'll
+	 * just leave the PCH SSC reference enabled in case
+	 * any active PLL is using it. It will get disabled
+	 * after runtime suspend if we don't have FDI.
+	 *
+	 * TODO: Move the whole reference clock handling
+	 * to the modeset sequence proper so that we can
+	 * actually enable/disable/reconfigure these things
+	 * safely. To do that we need to introduce a real
+	 * clock hierarchy. That would also allow us to do
+	 * clock bending finally.
+	 */
+	dev_priv->pch_ssc_use = 0;
+
+	if (spll_uses_pch_ssc(dev_priv)) {
+		drm_dbg_kms(&dev_priv->drm, "SPLL using PCH SSC\n");
+		dev_priv->pch_ssc_use |= BIT(DPLL_ID_SPLL);
+	}
+
+	if (wrpll_uses_pch_ssc(dev_priv, DPLL_ID_WRPLL1)) {
+		drm_dbg_kms(&dev_priv->drm, "WRPLL1 using PCH SSC\n");
+		dev_priv->pch_ssc_use |= BIT(DPLL_ID_WRPLL1);
+	}
+
+	if (wrpll_uses_pch_ssc(dev_priv, DPLL_ID_WRPLL2)) {
+		drm_dbg_kms(&dev_priv->drm, "WRPLL2 using PCH SSC\n");
+		dev_priv->pch_ssc_use |= BIT(DPLL_ID_WRPLL2);
+	}
+
+	if (dev_priv->pch_ssc_use)
+		return;
+
+	if (has_fdi) {
+		lpt_bend_clkout_dp(dev_priv, 0);
+		lpt_enable_clkout_dp(dev_priv, true, true);
+	} else {
+		lpt_disable_clkout_dp(dev_priv);
+	}
+}
+
+static void ilk_init_pch_refclk(struct drm_i915_private *dev_priv)
+{
+	struct intel_encoder *encoder;
+	int i;
+	u32 val, final;
+	bool has_lvds = false;
+	bool has_cpu_edp = false;
+	bool has_panel = false;
+	bool has_ck505 = false;
+	bool can_ssc = false;
+	bool using_ssc_source = false;
+
+	/* We need to take the global config into account */
+	for_each_intel_encoder(&dev_priv->drm, encoder) {
+		switch (encoder->type) {
+		case INTEL_OUTPUT_LVDS:
+			has_panel = true;
+			has_lvds = true;
+			break;
+		case INTEL_OUTPUT_EDP:
+			has_panel = true;
+			if (encoder->port == PORT_A)
+				has_cpu_edp = true;
+			break;
+		default:
+			break;
+		}
+	}
+
+	if (HAS_PCH_IBX(dev_priv)) {
+		has_ck505 = dev_priv->display.vbt.display_clock_mode;
+		can_ssc = has_ck505;
+	} else {
+		has_ck505 = false;
+		can_ssc = true;
+	}
+
+	/* Check if any DPLLs are using the SSC source */
+	for (i = 0; i < dev_priv->display.dpll.num_shared_dpll; i++) {
+		u32 temp = intel_de_read(dev_priv, PCH_DPLL(i));
+
+		if (!(temp & DPLL_VCO_ENABLE))
+			continue;
+
+		if ((temp & PLL_REF_INPUT_MASK) ==
+		    PLLB_REF_INPUT_SPREADSPECTRUMIN) {
+			using_ssc_source = true;
+			break;
+		}
+	}
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "has_panel %d has_lvds %d has_ck505 %d using_ssc_source %d\n",
+		    has_panel, has_lvds, has_ck505, using_ssc_source);
+
+	/* Ironlake: try to setup display ref clock before DPLL
+	 * enabling. This is only under driver's control after
+	 * PCH B stepping, previous chipset stepping should be
+	 * ignoring this setting.
+	 */
+	val = intel_de_read(dev_priv, PCH_DREF_CONTROL);
+
+	/* As we must carefully and slowly disable/enable each source in turn,
+	 * compute the final state we want first and check if we need to
+	 * make any changes at all.
+	 */
+	final = val;
+	final &= ~DREF_NONSPREAD_SOURCE_MASK;
+	if (has_ck505)
+		final |= DREF_NONSPREAD_CK505_ENABLE;
+	else
+		final |= DREF_NONSPREAD_SOURCE_ENABLE;
+
+	final &= ~DREF_SSC_SOURCE_MASK;
+	final &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
+	final &= ~DREF_SSC1_ENABLE;
+
+	if (has_panel) {
+		final |= DREF_SSC_SOURCE_ENABLE;
+
+		if (intel_panel_use_ssc(dev_priv) && can_ssc)
+			final |= DREF_SSC1_ENABLE;
+
+		if (has_cpu_edp) {
+			if (intel_panel_use_ssc(dev_priv) && can_ssc)
+				final |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
+			else
+				final |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
+		} else {
+			final |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
+		}
+	} else if (using_ssc_source) {
+		final |= DREF_SSC_SOURCE_ENABLE;
+		final |= DREF_SSC1_ENABLE;
+	}
+
+	if (final == val)
+		return;
+
+	/* Always enable nonspread source */
+	val &= ~DREF_NONSPREAD_SOURCE_MASK;
+
+	if (has_ck505)
+		val |= DREF_NONSPREAD_CK505_ENABLE;
+	else
+		val |= DREF_NONSPREAD_SOURCE_ENABLE;
+
+	if (has_panel) {
+		val &= ~DREF_SSC_SOURCE_MASK;
+		val |= DREF_SSC_SOURCE_ENABLE;
+
+		/* SSC must be turned on before enabling the CPU output  */
+		if (intel_panel_use_ssc(dev_priv) && can_ssc) {
+			drm_dbg_kms(&dev_priv->drm, "Using SSC on panel\n");
+			val |= DREF_SSC1_ENABLE;
+		} else {
+			val &= ~DREF_SSC1_ENABLE;
+		}
+
+		/* Get SSC going before enabling the outputs */
+		intel_de_write(dev_priv, PCH_DREF_CONTROL, val);
+		intel_de_posting_read(dev_priv, PCH_DREF_CONTROL);
+		udelay(200);
+
+		val &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
+
+		/* Enable CPU source on CPU attached eDP */
+		if (has_cpu_edp) {
+			if (intel_panel_use_ssc(dev_priv) && can_ssc) {
+				drm_dbg_kms(&dev_priv->drm,
+					    "Using SSC on eDP\n");
+				val |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
+			} else {
+				val |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
+			}
+		} else {
+			val |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
+		}
+
+		intel_de_write(dev_priv, PCH_DREF_CONTROL, val);
+		intel_de_posting_read(dev_priv, PCH_DREF_CONTROL);
+		udelay(200);
+	} else {
+		drm_dbg_kms(&dev_priv->drm, "Disabling CPU source output\n");
+
+		val &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
+
+		/* Turn off CPU output */
+		val |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
+
+		intel_de_write(dev_priv, PCH_DREF_CONTROL, val);
+		intel_de_posting_read(dev_priv, PCH_DREF_CONTROL);
+		udelay(200);
+
+		if (!using_ssc_source) {
+			drm_dbg_kms(&dev_priv->drm, "Disabling SSC source\n");
+
+			/* Turn off the SSC source */
+			val &= ~DREF_SSC_SOURCE_MASK;
+			val |= DREF_SSC_SOURCE_DISABLE;
+
+			/* Turn off SSC1 */
+			val &= ~DREF_SSC1_ENABLE;
+
+			intel_de_write(dev_priv, PCH_DREF_CONTROL, val);
+			intel_de_posting_read(dev_priv, PCH_DREF_CONTROL);
+			udelay(200);
+		}
+	}
+
+	drm_WARN_ON(&dev_priv->drm, val != final);
+}
+
+/*
+ * Initialize reference clocks when the driver loads
+ */
+void intel_init_pch_refclk(struct drm_i915_private *dev_priv)
+{
+	if (HAS_PCH_IBX(dev_priv) || HAS_PCH_CPT(dev_priv))
+		ilk_init_pch_refclk(dev_priv);
+	else if (HAS_PCH_LPT(dev_priv))
+		lpt_init_pch_refclk(dev_priv);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_pch_refclk.h b/drivers/gpu/drm/i915/display/intel_pch_refclk.h
new file mode 100644
index 000000000..9bcf56629
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_pch_refclk.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#ifndef _INTEL_PCH_REFCLK_H_
+#define _INTEL_PCH_REFCLK_H_
+
+#include <linux/types.h>
+
+struct drm_i915_private;
+struct intel_crtc_state;
+
+void lpt_program_iclkip(const struct intel_crtc_state *crtc_state);
+void lpt_disable_iclkip(struct drm_i915_private *dev_priv);
+int lpt_get_iclkip(struct drm_i915_private *dev_priv);
+int lpt_iclkip(const struct intel_crtc_state *crtc_state);
+
+void intel_init_pch_refclk(struct drm_i915_private *dev_priv);
+void lpt_disable_clkout_dp(struct drm_i915_private *dev_priv);
+
+#endif
diff --git a/drivers/gpu/drm/i915/display/intel_pipe_crc.c b/drivers/gpu/drm/i915/display/intel_pipe_crc.c
new file mode 100644
index 000000000..8ac263f47
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_pipe_crc.c
@@ -0,0 +1,672 @@
+/*
+ * Copyright © 2013 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Author: Damien Lespiau <damien.lespiau@intel.com>
+ *
+ */
+
+#include <linux/circ_buf.h>
+#include <linux/ctype.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+
+#include "intel_atomic.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_pipe_crc.h"
+
+static const char * const pipe_crc_sources[] = {
+	[INTEL_PIPE_CRC_SOURCE_NONE] = "none",
+	[INTEL_PIPE_CRC_SOURCE_PLANE1] = "plane1",
+	[INTEL_PIPE_CRC_SOURCE_PLANE2] = "plane2",
+	[INTEL_PIPE_CRC_SOURCE_PLANE3] = "plane3",
+	[INTEL_PIPE_CRC_SOURCE_PLANE4] = "plane4",
+	[INTEL_PIPE_CRC_SOURCE_PLANE5] = "plane5",
+	[INTEL_PIPE_CRC_SOURCE_PLANE6] = "plane6",
+	[INTEL_PIPE_CRC_SOURCE_PLANE7] = "plane7",
+	[INTEL_PIPE_CRC_SOURCE_PIPE] = "pipe",
+	[INTEL_PIPE_CRC_SOURCE_TV] = "TV",
+	[INTEL_PIPE_CRC_SOURCE_DP_B] = "DP-B",
+	[INTEL_PIPE_CRC_SOURCE_DP_C] = "DP-C",
+	[INTEL_PIPE_CRC_SOURCE_DP_D] = "DP-D",
+	[INTEL_PIPE_CRC_SOURCE_AUTO] = "auto",
+};
+
+static int i8xx_pipe_crc_ctl_reg(enum intel_pipe_crc_source *source,
+				 u32 *val)
+{
+	if (*source == INTEL_PIPE_CRC_SOURCE_AUTO)
+		*source = INTEL_PIPE_CRC_SOURCE_PIPE;
+
+	switch (*source) {
+	case INTEL_PIPE_CRC_SOURCE_PIPE:
+		*val = PIPE_CRC_ENABLE | PIPE_CRC_INCLUDE_BORDER_I8XX;
+		break;
+	case INTEL_PIPE_CRC_SOURCE_NONE:
+		*val = 0;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int i9xx_pipe_crc_auto_source(struct drm_i915_private *dev_priv,
+				     enum pipe pipe,
+				     enum intel_pipe_crc_source *source)
+{
+	struct drm_device *dev = &dev_priv->drm;
+	struct intel_encoder *encoder;
+	struct intel_crtc *crtc;
+	struct intel_digital_port *dig_port;
+	int ret = 0;
+
+	*source = INTEL_PIPE_CRC_SOURCE_PIPE;
+
+	drm_modeset_lock_all(dev);
+	for_each_intel_encoder(dev, encoder) {
+		if (!encoder->base.crtc)
+			continue;
+
+		crtc = to_intel_crtc(encoder->base.crtc);
+
+		if (crtc->pipe != pipe)
+			continue;
+
+		switch (encoder->type) {
+		case INTEL_OUTPUT_TVOUT:
+			*source = INTEL_PIPE_CRC_SOURCE_TV;
+			break;
+		case INTEL_OUTPUT_DP:
+		case INTEL_OUTPUT_EDP:
+			dig_port = enc_to_dig_port(encoder);
+			switch (dig_port->base.port) {
+			case PORT_B:
+				*source = INTEL_PIPE_CRC_SOURCE_DP_B;
+				break;
+			case PORT_C:
+				*source = INTEL_PIPE_CRC_SOURCE_DP_C;
+				break;
+			case PORT_D:
+				*source = INTEL_PIPE_CRC_SOURCE_DP_D;
+				break;
+			default:
+				drm_WARN(dev, 1, "nonexisting DP port %c\n",
+					 port_name(dig_port->base.port));
+				break;
+			}
+			break;
+		default:
+			break;
+		}
+	}
+	drm_modeset_unlock_all(dev);
+
+	return ret;
+}
+
+static int vlv_pipe_crc_ctl_reg(struct drm_i915_private *dev_priv,
+				enum pipe pipe,
+				enum intel_pipe_crc_source *source,
+				u32 *val)
+{
+	bool need_stable_symbols = false;
+
+	if (*source == INTEL_PIPE_CRC_SOURCE_AUTO) {
+		int ret = i9xx_pipe_crc_auto_source(dev_priv, pipe, source);
+		if (ret)
+			return ret;
+	}
+
+	switch (*source) {
+	case INTEL_PIPE_CRC_SOURCE_PIPE:
+		*val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_PIPE_VLV;
+		break;
+	case INTEL_PIPE_CRC_SOURCE_DP_B:
+		*val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_DP_B_VLV;
+		need_stable_symbols = true;
+		break;
+	case INTEL_PIPE_CRC_SOURCE_DP_C:
+		*val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_DP_C_VLV;
+		need_stable_symbols = true;
+		break;
+	case INTEL_PIPE_CRC_SOURCE_DP_D:
+		if (!IS_CHERRYVIEW(dev_priv))
+			return -EINVAL;
+		*val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_DP_D_VLV;
+		need_stable_symbols = true;
+		break;
+	case INTEL_PIPE_CRC_SOURCE_NONE:
+		*val = 0;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	/*
+	 * When the pipe CRC tap point is after the transcoders we need
+	 * to tweak symbol-level features to produce a deterministic series of
+	 * symbols for a given frame. We need to reset those features only once
+	 * a frame (instead of every nth symbol):
+	 *   - DC-balance: used to ensure a better clock recovery from the data
+	 *     link (SDVO)
+	 *   - DisplayPort scrambling: used for EMI reduction
+	 */
+	if (need_stable_symbols) {
+		u32 tmp = intel_de_read(dev_priv, PORT_DFT2_G4X);
+
+		tmp |= DC_BALANCE_RESET_VLV;
+		switch (pipe) {
+		case PIPE_A:
+			tmp |= PIPE_A_SCRAMBLE_RESET;
+			break;
+		case PIPE_B:
+			tmp |= PIPE_B_SCRAMBLE_RESET;
+			break;
+		case PIPE_C:
+			tmp |= PIPE_C_SCRAMBLE_RESET;
+			break;
+		default:
+			return -EINVAL;
+		}
+		intel_de_write(dev_priv, PORT_DFT2_G4X, tmp);
+	}
+
+	return 0;
+}
+
+static int i9xx_pipe_crc_ctl_reg(struct drm_i915_private *dev_priv,
+				 enum pipe pipe,
+				 enum intel_pipe_crc_source *source,
+				 u32 *val)
+{
+	if (*source == INTEL_PIPE_CRC_SOURCE_AUTO) {
+		int ret = i9xx_pipe_crc_auto_source(dev_priv, pipe, source);
+		if (ret)
+			return ret;
+	}
+
+	switch (*source) {
+	case INTEL_PIPE_CRC_SOURCE_PIPE:
+		*val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_PIPE_I9XX;
+		break;
+	case INTEL_PIPE_CRC_SOURCE_TV:
+		if (!SUPPORTS_TV(dev_priv))
+			return -EINVAL;
+		*val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_TV_PRE;
+		break;
+	case INTEL_PIPE_CRC_SOURCE_NONE:
+		*val = 0;
+		break;
+	default:
+		/*
+		 * The DP CRC source doesn't work on g4x.
+		 * It can be made to work to some degree by selecting
+		 * the correct CRC source before the port is enabled,
+		 * and not touching the CRC source bits again until
+		 * the port is disabled. But even then the bits
+		 * eventually get stuck and a reboot is needed to get
+		 * working CRCs on the pipe again. Let's simply
+		 * refuse to use DP CRCs on g4x.
+		 */
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static void vlv_undo_pipe_scramble_reset(struct drm_i915_private *dev_priv,
+					 enum pipe pipe)
+{
+	u32 tmp = intel_de_read(dev_priv, PORT_DFT2_G4X);
+
+	switch (pipe) {
+	case PIPE_A:
+		tmp &= ~PIPE_A_SCRAMBLE_RESET;
+		break;
+	case PIPE_B:
+		tmp &= ~PIPE_B_SCRAMBLE_RESET;
+		break;
+	case PIPE_C:
+		tmp &= ~PIPE_C_SCRAMBLE_RESET;
+		break;
+	default:
+		return;
+	}
+	if (!(tmp & PIPE_SCRAMBLE_RESET_MASK))
+		tmp &= ~DC_BALANCE_RESET_VLV;
+	intel_de_write(dev_priv, PORT_DFT2_G4X, tmp);
+}
+
+static int ilk_pipe_crc_ctl_reg(enum intel_pipe_crc_source *source,
+				u32 *val)
+{
+	if (*source == INTEL_PIPE_CRC_SOURCE_AUTO)
+		*source = INTEL_PIPE_CRC_SOURCE_PIPE;
+
+	switch (*source) {
+	case INTEL_PIPE_CRC_SOURCE_PLANE1:
+		*val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_PRIMARY_ILK;
+		break;
+	case INTEL_PIPE_CRC_SOURCE_PLANE2:
+		*val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_SPRITE_ILK;
+		break;
+	case INTEL_PIPE_CRC_SOURCE_PIPE:
+		*val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_PIPE_ILK;
+		break;
+	case INTEL_PIPE_CRC_SOURCE_NONE:
+		*val = 0;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static void
+intel_crtc_crc_setup_workarounds(struct intel_crtc *crtc, bool enable)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	struct intel_crtc_state *pipe_config;
+	struct drm_atomic_state *state;
+	struct drm_modeset_acquire_ctx ctx;
+	int ret;
+
+	drm_modeset_acquire_init(&ctx, 0);
+
+	state = drm_atomic_state_alloc(&dev_priv->drm);
+	if (!state) {
+		ret = -ENOMEM;
+		goto unlock;
+	}
+
+	state->acquire_ctx = &ctx;
+
+retry:
+	pipe_config = intel_atomic_get_crtc_state(state, crtc);
+	if (IS_ERR(pipe_config)) {
+		ret = PTR_ERR(pipe_config);
+		goto put_state;
+	}
+
+	pipe_config->uapi.mode_changed = pipe_config->has_psr;
+	pipe_config->crc_enabled = enable;
+
+	if (IS_HASWELL(dev_priv) &&
+	    pipe_config->hw.active && crtc->pipe == PIPE_A &&
+	    pipe_config->cpu_transcoder == TRANSCODER_EDP)
+		pipe_config->uapi.mode_changed = true;
+
+	ret = drm_atomic_commit(state);
+
+put_state:
+	if (ret == -EDEADLK) {
+		drm_atomic_state_clear(state);
+		drm_modeset_backoff(&ctx);
+		goto retry;
+	}
+
+	drm_atomic_state_put(state);
+unlock:
+	drm_WARN(&dev_priv->drm, ret,
+		 "Toggling workaround to %i returns %i\n", enable, ret);
+	drm_modeset_drop_locks(&ctx);
+	drm_modeset_acquire_fini(&ctx);
+}
+
+static int ivb_pipe_crc_ctl_reg(struct drm_i915_private *dev_priv,
+				enum pipe pipe,
+				enum intel_pipe_crc_source *source,
+				u32 *val)
+{
+	if (*source == INTEL_PIPE_CRC_SOURCE_AUTO)
+		*source = INTEL_PIPE_CRC_SOURCE_PIPE;
+
+	switch (*source) {
+	case INTEL_PIPE_CRC_SOURCE_PLANE1:
+		*val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_PRIMARY_IVB;
+		break;
+	case INTEL_PIPE_CRC_SOURCE_PLANE2:
+		*val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_SPRITE_IVB;
+		break;
+	case INTEL_PIPE_CRC_SOURCE_PIPE:
+		*val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_PF_IVB;
+		break;
+	case INTEL_PIPE_CRC_SOURCE_NONE:
+		*val = 0;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int skl_pipe_crc_ctl_reg(struct drm_i915_private *dev_priv,
+				enum pipe pipe,
+				enum intel_pipe_crc_source *source,
+				u32 *val)
+{
+	if (*source == INTEL_PIPE_CRC_SOURCE_AUTO)
+		*source = INTEL_PIPE_CRC_SOURCE_PIPE;
+
+	switch (*source) {
+	case INTEL_PIPE_CRC_SOURCE_PLANE1:
+		*val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_PLANE_1_SKL;
+		break;
+	case INTEL_PIPE_CRC_SOURCE_PLANE2:
+		*val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_PLANE_2_SKL;
+		break;
+	case INTEL_PIPE_CRC_SOURCE_PLANE3:
+		*val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_PLANE_3_SKL;
+		break;
+	case INTEL_PIPE_CRC_SOURCE_PLANE4:
+		*val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_PLANE_4_SKL;
+		break;
+	case INTEL_PIPE_CRC_SOURCE_PLANE5:
+		*val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_PLANE_5_SKL;
+		break;
+	case INTEL_PIPE_CRC_SOURCE_PLANE6:
+		*val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_PLANE_6_SKL;
+		break;
+	case INTEL_PIPE_CRC_SOURCE_PLANE7:
+		*val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_PLANE_7_SKL;
+		break;
+	case INTEL_PIPE_CRC_SOURCE_PIPE:
+		*val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_DMUX_SKL;
+		break;
+	case INTEL_PIPE_CRC_SOURCE_NONE:
+		*val = 0;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int get_new_crc_ctl_reg(struct drm_i915_private *dev_priv,
+			       enum pipe pipe,
+			       enum intel_pipe_crc_source *source, u32 *val)
+{
+	if (DISPLAY_VER(dev_priv) == 2)
+		return i8xx_pipe_crc_ctl_reg(source, val);
+	else if (DISPLAY_VER(dev_priv) < 5)
+		return i9xx_pipe_crc_ctl_reg(dev_priv, pipe, source, val);
+	else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
+		return vlv_pipe_crc_ctl_reg(dev_priv, pipe, source, val);
+	else if (IS_IRONLAKE(dev_priv) || IS_SANDYBRIDGE(dev_priv))
+		return ilk_pipe_crc_ctl_reg(source, val);
+	else if (DISPLAY_VER(dev_priv) < 9)
+		return ivb_pipe_crc_ctl_reg(dev_priv, pipe, source, val);
+	else
+		return skl_pipe_crc_ctl_reg(dev_priv, pipe, source, val);
+}
+
+static int
+display_crc_ctl_parse_source(const char *buf, enum intel_pipe_crc_source *s)
+{
+	int i;
+
+	if (!buf) {
+		*s = INTEL_PIPE_CRC_SOURCE_NONE;
+		return 0;
+	}
+
+	i = match_string(pipe_crc_sources, ARRAY_SIZE(pipe_crc_sources), buf);
+	if (i < 0)
+		return i;
+
+	*s = i;
+	return 0;
+}
+
+void intel_crtc_crc_init(struct intel_crtc *crtc)
+{
+	struct intel_pipe_crc *pipe_crc = &crtc->pipe_crc;
+
+	spin_lock_init(&pipe_crc->lock);
+}
+
+static int i8xx_crc_source_valid(struct drm_i915_private *dev_priv,
+				 const enum intel_pipe_crc_source source)
+{
+	switch (source) {
+	case INTEL_PIPE_CRC_SOURCE_PIPE:
+	case INTEL_PIPE_CRC_SOURCE_NONE:
+		return 0;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int i9xx_crc_source_valid(struct drm_i915_private *dev_priv,
+				 const enum intel_pipe_crc_source source)
+{
+	switch (source) {
+	case INTEL_PIPE_CRC_SOURCE_PIPE:
+	case INTEL_PIPE_CRC_SOURCE_TV:
+	case INTEL_PIPE_CRC_SOURCE_NONE:
+		return 0;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int vlv_crc_source_valid(struct drm_i915_private *dev_priv,
+				const enum intel_pipe_crc_source source)
+{
+	switch (source) {
+	case INTEL_PIPE_CRC_SOURCE_PIPE:
+	case INTEL_PIPE_CRC_SOURCE_DP_B:
+	case INTEL_PIPE_CRC_SOURCE_DP_C:
+	case INTEL_PIPE_CRC_SOURCE_DP_D:
+	case INTEL_PIPE_CRC_SOURCE_NONE:
+		return 0;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ilk_crc_source_valid(struct drm_i915_private *dev_priv,
+				const enum intel_pipe_crc_source source)
+{
+	switch (source) {
+	case INTEL_PIPE_CRC_SOURCE_PIPE:
+	case INTEL_PIPE_CRC_SOURCE_PLANE1:
+	case INTEL_PIPE_CRC_SOURCE_PLANE2:
+	case INTEL_PIPE_CRC_SOURCE_NONE:
+		return 0;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ivb_crc_source_valid(struct drm_i915_private *dev_priv,
+				const enum intel_pipe_crc_source source)
+{
+	switch (source) {
+	case INTEL_PIPE_CRC_SOURCE_PIPE:
+	case INTEL_PIPE_CRC_SOURCE_PLANE1:
+	case INTEL_PIPE_CRC_SOURCE_PLANE2:
+	case INTEL_PIPE_CRC_SOURCE_NONE:
+		return 0;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int skl_crc_source_valid(struct drm_i915_private *dev_priv,
+				const enum intel_pipe_crc_source source)
+{
+	switch (source) {
+	case INTEL_PIPE_CRC_SOURCE_PIPE:
+	case INTEL_PIPE_CRC_SOURCE_PLANE1:
+	case INTEL_PIPE_CRC_SOURCE_PLANE2:
+	case INTEL_PIPE_CRC_SOURCE_PLANE3:
+	case INTEL_PIPE_CRC_SOURCE_PLANE4:
+	case INTEL_PIPE_CRC_SOURCE_PLANE5:
+	case INTEL_PIPE_CRC_SOURCE_PLANE6:
+	case INTEL_PIPE_CRC_SOURCE_PLANE7:
+	case INTEL_PIPE_CRC_SOURCE_NONE:
+		return 0;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int
+intel_is_valid_crc_source(struct drm_i915_private *dev_priv,
+			  const enum intel_pipe_crc_source source)
+{
+	if (DISPLAY_VER(dev_priv) == 2)
+		return i8xx_crc_source_valid(dev_priv, source);
+	else if (DISPLAY_VER(dev_priv) < 5)
+		return i9xx_crc_source_valid(dev_priv, source);
+	else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
+		return vlv_crc_source_valid(dev_priv, source);
+	else if (IS_IRONLAKE(dev_priv) || IS_SANDYBRIDGE(dev_priv))
+		return ilk_crc_source_valid(dev_priv, source);
+	else if (DISPLAY_VER(dev_priv) < 9)
+		return ivb_crc_source_valid(dev_priv, source);
+	else
+		return skl_crc_source_valid(dev_priv, source);
+}
+
+const char *const *intel_crtc_get_crc_sources(struct drm_crtc *crtc,
+					      size_t *count)
+{
+	*count = ARRAY_SIZE(pipe_crc_sources);
+	return pipe_crc_sources;
+}
+
+int intel_crtc_verify_crc_source(struct drm_crtc *crtc, const char *source_name,
+				 size_t *values_cnt)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->dev);
+	enum intel_pipe_crc_source source;
+
+	if (display_crc_ctl_parse_source(source_name, &source) < 0) {
+		drm_dbg(&dev_priv->drm, "unknown source %s\n", source_name);
+		return -EINVAL;
+	}
+
+	if (source == INTEL_PIPE_CRC_SOURCE_AUTO ||
+	    intel_is_valid_crc_source(dev_priv, source) == 0) {
+		*values_cnt = 5;
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
+int intel_crtc_set_crc_source(struct drm_crtc *_crtc, const char *source_name)
+{
+	struct intel_crtc *crtc = to_intel_crtc(_crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	struct intel_pipe_crc *pipe_crc = &crtc->pipe_crc;
+	enum intel_display_power_domain power_domain;
+	enum intel_pipe_crc_source source;
+	enum pipe pipe = crtc->pipe;
+	intel_wakeref_t wakeref;
+	u32 val = 0; /* shut up gcc */
+	int ret = 0;
+	bool enable;
+
+	if (display_crc_ctl_parse_source(source_name, &source) < 0) {
+		drm_dbg(&dev_priv->drm, "unknown source %s\n", source_name);
+		return -EINVAL;
+	}
+
+	power_domain = POWER_DOMAIN_PIPE(pipe);
+	wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
+	if (!wakeref) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Trying to capture CRC while pipe is off\n");
+		return -EIO;
+	}
+
+	enable = source != INTEL_PIPE_CRC_SOURCE_NONE;
+	if (enable)
+		intel_crtc_crc_setup_workarounds(crtc, true);
+
+	ret = get_new_crc_ctl_reg(dev_priv, pipe, &source, &val);
+	if (ret != 0)
+		goto out;
+
+	pipe_crc->source = source;
+	intel_de_write(dev_priv, PIPE_CRC_CTL(pipe), val);
+	intel_de_posting_read(dev_priv, PIPE_CRC_CTL(pipe));
+
+	if (!source) {
+		if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
+			vlv_undo_pipe_scramble_reset(dev_priv, pipe);
+	}
+
+	pipe_crc->skipped = 0;
+
+out:
+	if (!enable)
+		intel_crtc_crc_setup_workarounds(crtc, false);
+
+	intel_display_power_put(dev_priv, power_domain, wakeref);
+
+	return ret;
+}
+
+void intel_crtc_enable_pipe_crc(struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	struct intel_pipe_crc *pipe_crc = &crtc->pipe_crc;
+	enum pipe pipe = crtc->pipe;
+	u32 val = 0;
+
+	if (!crtc->base.crc.opened)
+		return;
+
+	if (get_new_crc_ctl_reg(dev_priv, pipe, &pipe_crc->source, &val) < 0)
+		return;
+
+	/* Don't need pipe_crc->lock here, IRQs are not generated. */
+	pipe_crc->skipped = 0;
+
+	intel_de_write(dev_priv, PIPE_CRC_CTL(pipe), val);
+	intel_de_posting_read(dev_priv, PIPE_CRC_CTL(pipe));
+}
+
+void intel_crtc_disable_pipe_crc(struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	struct intel_pipe_crc *pipe_crc = &crtc->pipe_crc;
+	enum pipe pipe = crtc->pipe;
+
+	/* Swallow crc's until we stop generating them. */
+	spin_lock_irq(&pipe_crc->lock);
+	pipe_crc->skipped = INT_MIN;
+	spin_unlock_irq(&pipe_crc->lock);
+
+	intel_de_write(dev_priv, PIPE_CRC_CTL(pipe), 0);
+	intel_de_posting_read(dev_priv, PIPE_CRC_CTL(pipe));
+	intel_synchronize_irq(dev_priv);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_pipe_crc.h b/drivers/gpu/drm/i915/display/intel_pipe_crc.h
new file mode 100644
index 000000000..43012b189
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_pipe_crc.h
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_PIPE_CRC_H__
+#define __INTEL_PIPE_CRC_H__
+
+#include <linux/types.h>
+
+struct drm_crtc;
+struct drm_i915_private;
+struct intel_crtc;
+
+#ifdef CONFIG_DEBUG_FS
+void intel_crtc_crc_init(struct intel_crtc *crtc);
+int intel_crtc_set_crc_source(struct drm_crtc *crtc, const char *source_name);
+int intel_crtc_verify_crc_source(struct drm_crtc *crtc,
+				 const char *source_name, size_t *values_cnt);
+const char *const *intel_crtc_get_crc_sources(struct drm_crtc *crtc,
+					      size_t *count);
+void intel_crtc_disable_pipe_crc(struct intel_crtc *crtc);
+void intel_crtc_enable_pipe_crc(struct intel_crtc *crtc);
+#else
+static inline void intel_crtc_crc_init(struct intel_crtc *crtc) {}
+#define intel_crtc_set_crc_source NULL
+#define intel_crtc_verify_crc_source NULL
+#define intel_crtc_get_crc_sources NULL
+static inline void intel_crtc_disable_pipe_crc(struct intel_crtc *crtc)
+{
+}
+
+static inline void intel_crtc_enable_pipe_crc(struct intel_crtc *crtc)
+{
+}
+#endif
+
+#endif /* __INTEL_PIPE_CRC_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_plane_initial.c b/drivers/gpu/drm/i915/display/intel_plane_initial.c
new file mode 100644
index 000000000..76be796df
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_plane_initial.c
@@ -0,0 +1,323 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#include "gem/i915_gem_region.h"
+#include "i915_drv.h"
+#include "intel_atomic_plane.h"
+#include "intel_display.h"
+#include "intel_display_types.h"
+#include "intel_fb.h"
+#include "intel_plane_initial.h"
+
+static bool
+intel_reuse_initial_plane_obj(struct drm_i915_private *i915,
+			      const struct intel_initial_plane_config *plane_config,
+			      struct drm_framebuffer **fb,
+			      struct i915_vma **vma)
+{
+	struct intel_crtc *crtc;
+
+	for_each_intel_crtc(&i915->drm, crtc) {
+		struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+		struct intel_plane *plane =
+			to_intel_plane(crtc->base.primary);
+		struct intel_plane_state *plane_state =
+			to_intel_plane_state(plane->base.state);
+
+		if (!crtc_state->uapi.active)
+			continue;
+
+		if (!plane_state->ggtt_vma)
+			continue;
+
+		if (intel_plane_ggtt_offset(plane_state) == plane_config->base) {
+			*fb = plane_state->hw.fb;
+			*vma = plane_state->ggtt_vma;
+			return true;
+		}
+	}
+
+	return false;
+}
+
+static struct i915_vma *
+initial_plane_vma(struct drm_i915_private *i915,
+		  struct intel_initial_plane_config *plane_config)
+{
+	struct intel_memory_region *mem;
+	struct drm_i915_gem_object *obj;
+	struct i915_vma *vma;
+	resource_size_t phys_base;
+	u32 base, size;
+	u64 pinctl;
+
+	if (plane_config->size == 0)
+		return NULL;
+
+	base = round_down(plane_config->base, I915_GTT_MIN_ALIGNMENT);
+	if (IS_DGFX(i915)) {
+		gen8_pte_t __iomem *gte = to_gt(i915)->ggtt->gsm;
+		gen8_pte_t pte;
+
+		gte += base / I915_GTT_PAGE_SIZE;
+
+		pte = ioread64(gte);
+		if (!(pte & GEN12_GGTT_PTE_LM)) {
+			drm_err(&i915->drm,
+				"Initial plane programming missing PTE_LM bit\n");
+			return NULL;
+		}
+
+		phys_base = pte & I915_GTT_PAGE_MASK;
+		mem = i915->mm.regions[INTEL_REGION_LMEM_0];
+
+		/*
+		 * We don't currently expect this to ever be placed in the
+		 * stolen portion.
+		 */
+		if (phys_base >= resource_size(&mem->region)) {
+			drm_err(&i915->drm,
+				"Initial plane programming using invalid range, phys_base=%pa\n",
+				&phys_base);
+			return NULL;
+		}
+
+		drm_dbg(&i915->drm,
+			"Using phys_base=%pa, based on initial plane programming\n",
+			&phys_base);
+	} else {
+		phys_base = base;
+		mem = i915->mm.stolen_region;
+	}
+
+	if (!mem)
+		return NULL;
+
+	size = round_up(plane_config->base + plane_config->size,
+			mem->min_page_size);
+	size -= base;
+
+	/*
+	 * If the FB is too big, just don't use it since fbdev is not very
+	 * important and we should probably use that space with FBC or other
+	 * features.
+	 */
+	if (IS_ENABLED(CONFIG_FRAMEBUFFER_CONSOLE) &&
+	    mem == i915->mm.stolen_region &&
+	    size * 2 > i915->stolen_usable_size)
+		return NULL;
+
+	obj = i915_gem_object_create_region_at(mem, phys_base, size, 0);
+	if (IS_ERR(obj))
+		return NULL;
+
+	/*
+	 * Mark it WT ahead of time to avoid changing the
+	 * cache_level during fbdev initialization. The
+	 * unbind there would get stuck waiting for rcu.
+	 */
+	i915_gem_object_set_cache_coherency(obj, HAS_WT(i915) ?
+					    I915_CACHE_WT : I915_CACHE_NONE);
+
+	switch (plane_config->tiling) {
+	case I915_TILING_NONE:
+		break;
+	case I915_TILING_X:
+	case I915_TILING_Y:
+		obj->tiling_and_stride =
+			plane_config->fb->base.pitches[0] |
+			plane_config->tiling;
+		break;
+	default:
+		MISSING_CASE(plane_config->tiling);
+		goto err_obj;
+	}
+
+	vma = i915_vma_instance(obj, &to_gt(i915)->ggtt->vm, NULL);
+	if (IS_ERR(vma))
+		goto err_obj;
+
+	pinctl = PIN_GLOBAL | PIN_OFFSET_FIXED | base;
+	if (HAS_GMCH(i915))
+		pinctl |= PIN_MAPPABLE;
+	if (i915_vma_pin(vma, 0, 0, pinctl))
+		goto err_obj;
+
+	if (i915_gem_object_is_tiled(obj) &&
+	    !i915_vma_is_map_and_fenceable(vma))
+		goto err_obj;
+
+	return vma;
+
+err_obj:
+	i915_gem_object_put(obj);
+	return NULL;
+}
+
+static bool
+intel_alloc_initial_plane_obj(struct intel_crtc *crtc,
+			      struct intel_initial_plane_config *plane_config)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct drm_mode_fb_cmd2 mode_cmd = { 0 };
+	struct drm_framebuffer *fb = &plane_config->fb->base;
+	struct i915_vma *vma;
+
+	switch (fb->modifier) {
+	case DRM_FORMAT_MOD_LINEAR:
+	case I915_FORMAT_MOD_X_TILED:
+	case I915_FORMAT_MOD_Y_TILED:
+	case I915_FORMAT_MOD_4_TILED:
+		break;
+	default:
+		drm_dbg(&dev_priv->drm,
+			"Unsupported modifier for initial FB: 0x%llx\n",
+			fb->modifier);
+		return false;
+	}
+
+	vma = initial_plane_vma(dev_priv, plane_config);
+	if (!vma)
+		return false;
+
+	mode_cmd.pixel_format = fb->format->format;
+	mode_cmd.width = fb->width;
+	mode_cmd.height = fb->height;
+	mode_cmd.pitches[0] = fb->pitches[0];
+	mode_cmd.modifier[0] = fb->modifier;
+	mode_cmd.flags = DRM_MODE_FB_MODIFIERS;
+
+	if (intel_framebuffer_init(to_intel_framebuffer(fb),
+				   vma->obj, &mode_cmd)) {
+		drm_dbg_kms(&dev_priv->drm, "intel fb init failed\n");
+		goto err_vma;
+	}
+
+	plane_config->vma = vma;
+	return true;
+
+err_vma:
+	i915_vma_put(vma);
+	return false;
+}
+
+static void
+intel_find_initial_plane_obj(struct intel_crtc *crtc,
+			     struct intel_initial_plane_config *plane_config)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_plane *plane =
+		to_intel_plane(crtc->base.primary);
+	struct intel_plane_state *plane_state =
+		to_intel_plane_state(plane->base.state);
+	struct drm_framebuffer *fb;
+	struct i915_vma *vma;
+
+	/*
+	 * TODO:
+	 *   Disable planes if get_initial_plane_config() failed.
+	 *   Make sure things work if the surface base is not page aligned.
+	 */
+	if (!plane_config->fb)
+		return;
+
+	if (intel_alloc_initial_plane_obj(crtc, plane_config)) {
+		fb = &plane_config->fb->base;
+		vma = plane_config->vma;
+		goto valid_fb;
+	}
+
+	/*
+	 * Failed to alloc the obj, check to see if we should share
+	 * an fb with another CRTC instead
+	 */
+	if (intel_reuse_initial_plane_obj(dev_priv, plane_config, &fb, &vma))
+		goto valid_fb;
+
+	/*
+	 * We've failed to reconstruct the BIOS FB.  Current display state
+	 * indicates that the primary plane is visible, but has a NULL FB,
+	 * which will lead to problems later if we don't fix it up.  The
+	 * simplest solution is to just disable the primary plane now and
+	 * pretend the BIOS never had it enabled.
+	 */
+	intel_plane_disable_noatomic(crtc, plane);
+
+	return;
+
+valid_fb:
+	plane_state->uapi.rotation = plane_config->rotation;
+	intel_fb_fill_view(to_intel_framebuffer(fb),
+			   plane_state->uapi.rotation, &plane_state->view);
+
+	__i915_vma_pin(vma);
+	plane_state->ggtt_vma = i915_vma_get(vma);
+	if (intel_plane_uses_fence(plane_state) &&
+	    i915_vma_pin_fence(vma) == 0 && vma->fence)
+		plane_state->flags |= PLANE_HAS_FENCE;
+
+	plane_state->uapi.src_x = 0;
+	plane_state->uapi.src_y = 0;
+	plane_state->uapi.src_w = fb->width << 16;
+	plane_state->uapi.src_h = fb->height << 16;
+
+	plane_state->uapi.crtc_x = 0;
+	plane_state->uapi.crtc_y = 0;
+	plane_state->uapi.crtc_w = fb->width;
+	plane_state->uapi.crtc_h = fb->height;
+
+	if (plane_config->tiling)
+		dev_priv->preserve_bios_swizzle = true;
+
+	plane_state->uapi.fb = fb;
+	drm_framebuffer_get(fb);
+
+	plane_state->uapi.crtc = &crtc->base;
+	intel_plane_copy_uapi_to_hw_state(plane_state, plane_state, crtc);
+
+	atomic_or(plane->frontbuffer_bit, &to_intel_frontbuffer(fb)->bits);
+}
+
+static void plane_config_fini(struct intel_initial_plane_config *plane_config)
+{
+	if (plane_config->fb) {
+		struct drm_framebuffer *fb = &plane_config->fb->base;
+
+		/* We may only have the stub and not a full framebuffer */
+		if (drm_framebuffer_read_refcount(fb))
+			drm_framebuffer_put(fb);
+		else
+			kfree(fb);
+	}
+
+	if (plane_config->vma)
+		i915_vma_put(plane_config->vma);
+}
+
+void intel_crtc_initial_plane_config(struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	struct intel_initial_plane_config plane_config = {};
+
+	/*
+	 * Note that reserving the BIOS fb up front prevents us
+	 * from stuffing other stolen allocations like the ring
+	 * on top.  This prevents some ugliness at boot time, and
+	 * can even allow for smooth boot transitions if the BIOS
+	 * fb is large enough for the active pipe configuration.
+	 */
+	dev_priv->display.funcs.display->get_initial_plane_config(crtc, &plane_config);
+
+	/*
+	 * If the fb is shared between multiple heads, we'll
+	 * just get the first one.
+	 */
+	intel_find_initial_plane_obj(crtc, &plane_config);
+
+	plane_config_fini(&plane_config);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_plane_initial.h b/drivers/gpu/drm/i915/display/intel_plane_initial.h
new file mode 100644
index 000000000..c7e35ab31
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_plane_initial.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#ifndef __INTEL_PLANE_INITIAL_H__
+#define __INTEL_PLANE_INITIAL_H__
+
+struct intel_crtc;
+
+void intel_crtc_initial_plane_config(struct intel_crtc *crtc);
+
+#endif
diff --git a/drivers/gpu/drm/i915/display/intel_pps.c b/drivers/gpu/drm/i915/display/intel_pps.c
new file mode 100644
index 000000000..21944f5bf
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_pps.c
@@ -0,0 +1,1554 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#include "g4x_dp.h"
+#include "i915_drv.h"
+#include "intel_de.h"
+#include "intel_display_power_well.h"
+#include "intel_display_types.h"
+#include "intel_dp.h"
+#include "intel_dpll.h"
+#include "intel_lvds.h"
+#include "intel_pps.h"
+#include "intel_quirks.h"
+
+static void vlv_steal_power_sequencer(struct drm_i915_private *dev_priv,
+				      enum pipe pipe);
+
+static void pps_init_delays(struct intel_dp *intel_dp);
+static void pps_init_registers(struct intel_dp *intel_dp, bool force_disable_vdd);
+
+intel_wakeref_t intel_pps_lock(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	intel_wakeref_t wakeref;
+
+	/*
+	 * See intel_pps_reset_all() why we need a power domain reference here.
+	 */
+	wakeref = intel_display_power_get(dev_priv, POWER_DOMAIN_DISPLAY_CORE);
+	mutex_lock(&dev_priv->display.pps.mutex);
+
+	return wakeref;
+}
+
+intel_wakeref_t intel_pps_unlock(struct intel_dp *intel_dp,
+				 intel_wakeref_t wakeref)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+	mutex_unlock(&dev_priv->display.pps.mutex);
+	intel_display_power_put(dev_priv, POWER_DOMAIN_DISPLAY_CORE, wakeref);
+
+	return 0;
+}
+
+static void
+vlv_power_sequencer_kick(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	enum pipe pipe = intel_dp->pps.pps_pipe;
+	bool pll_enabled, release_cl_override = false;
+	enum dpio_phy phy = DPIO_PHY(pipe);
+	enum dpio_channel ch = vlv_pipe_to_channel(pipe);
+	u32 DP;
+
+	if (drm_WARN(&dev_priv->drm,
+		     intel_de_read(dev_priv, intel_dp->output_reg) & DP_PORT_EN,
+		     "skipping pipe %c power sequencer kick due to [ENCODER:%d:%s] being active\n",
+		     pipe_name(pipe), dig_port->base.base.base.id,
+		     dig_port->base.base.name))
+		return;
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "kicking pipe %c power sequencer for [ENCODER:%d:%s]\n",
+		    pipe_name(pipe), dig_port->base.base.base.id,
+		    dig_port->base.base.name);
+
+	/* Preserve the BIOS-computed detected bit. This is
+	 * supposed to be read-only.
+	 */
+	DP = intel_de_read(dev_priv, intel_dp->output_reg) & DP_DETECTED;
+	DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0;
+	DP |= DP_PORT_WIDTH(1);
+	DP |= DP_LINK_TRAIN_PAT_1;
+
+	if (IS_CHERRYVIEW(dev_priv))
+		DP |= DP_PIPE_SEL_CHV(pipe);
+	else
+		DP |= DP_PIPE_SEL(pipe);
+
+	pll_enabled = intel_de_read(dev_priv, DPLL(pipe)) & DPLL_VCO_ENABLE;
+
+	/*
+	 * The DPLL for the pipe must be enabled for this to work.
+	 * So enable temporarily it if it's not already enabled.
+	 */
+	if (!pll_enabled) {
+		release_cl_override = IS_CHERRYVIEW(dev_priv) &&
+			!chv_phy_powergate_ch(dev_priv, phy, ch, true);
+
+		if (vlv_force_pll_on(dev_priv, pipe, vlv_get_dpll(dev_priv))) {
+			drm_err(&dev_priv->drm,
+				"Failed to force on pll for pipe %c!\n",
+				pipe_name(pipe));
+			return;
+		}
+	}
+
+	/*
+	 * Similar magic as in intel_dp_enable_port().
+	 * We _must_ do this port enable + disable trick
+	 * to make this power sequencer lock onto the port.
+	 * Otherwise even VDD force bit won't work.
+	 */
+	intel_de_write(dev_priv, intel_dp->output_reg, DP);
+	intel_de_posting_read(dev_priv, intel_dp->output_reg);
+
+	intel_de_write(dev_priv, intel_dp->output_reg, DP | DP_PORT_EN);
+	intel_de_posting_read(dev_priv, intel_dp->output_reg);
+
+	intel_de_write(dev_priv, intel_dp->output_reg, DP & ~DP_PORT_EN);
+	intel_de_posting_read(dev_priv, intel_dp->output_reg);
+
+	if (!pll_enabled) {
+		vlv_force_pll_off(dev_priv, pipe);
+
+		if (release_cl_override)
+			chv_phy_powergate_ch(dev_priv, phy, ch, false);
+	}
+}
+
+static enum pipe vlv_find_free_pps(struct drm_i915_private *dev_priv)
+{
+	struct intel_encoder *encoder;
+	unsigned int pipes = (1 << PIPE_A) | (1 << PIPE_B);
+
+	/*
+	 * We don't have power sequencer currently.
+	 * Pick one that's not used by other ports.
+	 */
+	for_each_intel_dp(&dev_priv->drm, encoder) {
+		struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+
+		if (encoder->type == INTEL_OUTPUT_EDP) {
+			drm_WARN_ON(&dev_priv->drm,
+				    intel_dp->pps.active_pipe != INVALID_PIPE &&
+				    intel_dp->pps.active_pipe !=
+				    intel_dp->pps.pps_pipe);
+
+			if (intel_dp->pps.pps_pipe != INVALID_PIPE)
+				pipes &= ~(1 << intel_dp->pps.pps_pipe);
+		} else {
+			drm_WARN_ON(&dev_priv->drm,
+				    intel_dp->pps.pps_pipe != INVALID_PIPE);
+
+			if (intel_dp->pps.active_pipe != INVALID_PIPE)
+				pipes &= ~(1 << intel_dp->pps.active_pipe);
+		}
+	}
+
+	if (pipes == 0)
+		return INVALID_PIPE;
+
+	return ffs(pipes) - 1;
+}
+
+static enum pipe
+vlv_power_sequencer_pipe(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	enum pipe pipe;
+
+	lockdep_assert_held(&dev_priv->display.pps.mutex);
+
+	/* We should never land here with regular DP ports */
+	drm_WARN_ON(&dev_priv->drm, !intel_dp_is_edp(intel_dp));
+
+	drm_WARN_ON(&dev_priv->drm, intel_dp->pps.active_pipe != INVALID_PIPE &&
+		    intel_dp->pps.active_pipe != intel_dp->pps.pps_pipe);
+
+	if (intel_dp->pps.pps_pipe != INVALID_PIPE)
+		return intel_dp->pps.pps_pipe;
+
+	pipe = vlv_find_free_pps(dev_priv);
+
+	/*
+	 * Didn't find one. This should not happen since there
+	 * are two power sequencers and up to two eDP ports.
+	 */
+	if (drm_WARN_ON(&dev_priv->drm, pipe == INVALID_PIPE))
+		pipe = PIPE_A;
+
+	vlv_steal_power_sequencer(dev_priv, pipe);
+	intel_dp->pps.pps_pipe = pipe;
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "picked pipe %c power sequencer for [ENCODER:%d:%s]\n",
+		    pipe_name(intel_dp->pps.pps_pipe),
+		    dig_port->base.base.base.id,
+		    dig_port->base.base.name);
+
+	/* init power sequencer on this pipe and port */
+	pps_init_delays(intel_dp);
+	pps_init_registers(intel_dp, true);
+
+	/*
+	 * Even vdd force doesn't work until we've made
+	 * the power sequencer lock in on the port.
+	 */
+	vlv_power_sequencer_kick(intel_dp);
+
+	return intel_dp->pps.pps_pipe;
+}
+
+static int
+bxt_power_sequencer_idx(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_connector *connector = intel_dp->attached_connector;
+	int backlight_controller = connector->panel.vbt.backlight.controller;
+
+	lockdep_assert_held(&dev_priv->display.pps.mutex);
+
+	/* We should never land here with regular DP ports */
+	drm_WARN_ON(&dev_priv->drm, !intel_dp_is_edp(intel_dp));
+
+	if (!intel_dp->pps.pps_reset)
+		return backlight_controller;
+
+	intel_dp->pps.pps_reset = false;
+
+	/*
+	 * Only the HW needs to be reprogrammed, the SW state is fixed and
+	 * has been setup during connector init.
+	 */
+	pps_init_registers(intel_dp, false);
+
+	return backlight_controller;
+}
+
+typedef bool (*vlv_pipe_check)(struct drm_i915_private *dev_priv,
+			       enum pipe pipe);
+
+static bool vlv_pipe_has_pp_on(struct drm_i915_private *dev_priv,
+			       enum pipe pipe)
+{
+	return intel_de_read(dev_priv, PP_STATUS(pipe)) & PP_ON;
+}
+
+static bool vlv_pipe_has_vdd_on(struct drm_i915_private *dev_priv,
+				enum pipe pipe)
+{
+	return intel_de_read(dev_priv, PP_CONTROL(pipe)) & EDP_FORCE_VDD;
+}
+
+static bool vlv_pipe_any(struct drm_i915_private *dev_priv,
+			 enum pipe pipe)
+{
+	return true;
+}
+
+static enum pipe
+vlv_initial_pps_pipe(struct drm_i915_private *dev_priv,
+		     enum port port,
+		     vlv_pipe_check pipe_check)
+{
+	enum pipe pipe;
+
+	for (pipe = PIPE_A; pipe <= PIPE_B; pipe++) {
+		u32 port_sel = intel_de_read(dev_priv, PP_ON_DELAYS(pipe)) &
+			PANEL_PORT_SELECT_MASK;
+
+		if (port_sel != PANEL_PORT_SELECT_VLV(port))
+			continue;
+
+		if (!pipe_check(dev_priv, pipe))
+			continue;
+
+		return pipe;
+	}
+
+	return INVALID_PIPE;
+}
+
+static void
+vlv_initial_power_sequencer_setup(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	enum port port = dig_port->base.port;
+
+	lockdep_assert_held(&dev_priv->display.pps.mutex);
+
+	/* try to find a pipe with this port selected */
+	/* first pick one where the panel is on */
+	intel_dp->pps.pps_pipe = vlv_initial_pps_pipe(dev_priv, port,
+						      vlv_pipe_has_pp_on);
+	/* didn't find one? pick one where vdd is on */
+	if (intel_dp->pps.pps_pipe == INVALID_PIPE)
+		intel_dp->pps.pps_pipe = vlv_initial_pps_pipe(dev_priv, port,
+							      vlv_pipe_has_vdd_on);
+	/* didn't find one? pick one with just the correct port */
+	if (intel_dp->pps.pps_pipe == INVALID_PIPE)
+		intel_dp->pps.pps_pipe = vlv_initial_pps_pipe(dev_priv, port,
+							      vlv_pipe_any);
+
+	/* didn't find one? just let vlv_power_sequencer_pipe() pick one when needed */
+	if (intel_dp->pps.pps_pipe == INVALID_PIPE) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "no initial power sequencer for [ENCODER:%d:%s]\n",
+			    dig_port->base.base.base.id,
+			    dig_port->base.base.name);
+		return;
+	}
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "initial power sequencer for [ENCODER:%d:%s]: pipe %c\n",
+		    dig_port->base.base.base.id,
+		    dig_port->base.base.name,
+		    pipe_name(intel_dp->pps.pps_pipe));
+}
+
+void intel_pps_reset_all(struct drm_i915_private *dev_priv)
+{
+	struct intel_encoder *encoder;
+
+	if (drm_WARN_ON(&dev_priv->drm, !IS_LP(dev_priv)))
+		return;
+
+	if (!HAS_DISPLAY(dev_priv))
+		return;
+
+	/*
+	 * We can't grab pps_mutex here due to deadlock with power_domain
+	 * mutex when power_domain functions are called while holding pps_mutex.
+	 * That also means that in order to use pps_pipe the code needs to
+	 * hold both a power domain reference and pps_mutex, and the power domain
+	 * reference get/put must be done while _not_ holding pps_mutex.
+	 * pps_{lock,unlock}() do these steps in the correct order, so one
+	 * should use them always.
+	 */
+
+	for_each_intel_dp(&dev_priv->drm, encoder) {
+		struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+
+		drm_WARN_ON(&dev_priv->drm,
+			    intel_dp->pps.active_pipe != INVALID_PIPE);
+
+		if (encoder->type != INTEL_OUTPUT_EDP)
+			continue;
+
+		if (DISPLAY_VER(dev_priv) >= 9)
+			intel_dp->pps.pps_reset = true;
+		else
+			intel_dp->pps.pps_pipe = INVALID_PIPE;
+	}
+}
+
+struct pps_registers {
+	i915_reg_t pp_ctrl;
+	i915_reg_t pp_stat;
+	i915_reg_t pp_on;
+	i915_reg_t pp_off;
+	i915_reg_t pp_div;
+};
+
+static void intel_pps_get_registers(struct intel_dp *intel_dp,
+				    struct pps_registers *regs)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	int pps_idx = 0;
+
+	memset(regs, 0, sizeof(*regs));
+
+	if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
+		pps_idx = bxt_power_sequencer_idx(intel_dp);
+	else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
+		pps_idx = vlv_power_sequencer_pipe(intel_dp);
+
+	regs->pp_ctrl = PP_CONTROL(pps_idx);
+	regs->pp_stat = PP_STATUS(pps_idx);
+	regs->pp_on = PP_ON_DELAYS(pps_idx);
+	regs->pp_off = PP_OFF_DELAYS(pps_idx);
+
+	/* Cycle delay moved from PP_DIVISOR to PP_CONTROL */
+	if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv) ||
+	    INTEL_PCH_TYPE(dev_priv) >= PCH_CNP)
+		regs->pp_div = INVALID_MMIO_REG;
+	else
+		regs->pp_div = PP_DIVISOR(pps_idx);
+}
+
+static i915_reg_t
+_pp_ctrl_reg(struct intel_dp *intel_dp)
+{
+	struct pps_registers regs;
+
+	intel_pps_get_registers(intel_dp, &regs);
+
+	return regs.pp_ctrl;
+}
+
+static i915_reg_t
+_pp_stat_reg(struct intel_dp *intel_dp)
+{
+	struct pps_registers regs;
+
+	intel_pps_get_registers(intel_dp, &regs);
+
+	return regs.pp_stat;
+}
+
+static bool edp_have_panel_power(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+	lockdep_assert_held(&dev_priv->display.pps.mutex);
+
+	if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
+	    intel_dp->pps.pps_pipe == INVALID_PIPE)
+		return false;
+
+	return (intel_de_read(dev_priv, _pp_stat_reg(intel_dp)) & PP_ON) != 0;
+}
+
+static bool edp_have_panel_vdd(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+	lockdep_assert_held(&dev_priv->display.pps.mutex);
+
+	if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
+	    intel_dp->pps.pps_pipe == INVALID_PIPE)
+		return false;
+
+	return intel_de_read(dev_priv, _pp_ctrl_reg(intel_dp)) & EDP_FORCE_VDD;
+}
+
+void intel_pps_check_power_unlocked(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+	if (!intel_dp_is_edp(intel_dp))
+		return;
+
+	if (!edp_have_panel_power(intel_dp) && !edp_have_panel_vdd(intel_dp)) {
+		drm_WARN(&dev_priv->drm, 1,
+			 "eDP powered off while attempting aux channel communication.\n");
+		drm_dbg_kms(&dev_priv->drm, "Status 0x%08x Control 0x%08x\n",
+			    intel_de_read(dev_priv, _pp_stat_reg(intel_dp)),
+			    intel_de_read(dev_priv, _pp_ctrl_reg(intel_dp)));
+	}
+}
+
+#define IDLE_ON_MASK		(PP_ON | PP_SEQUENCE_MASK | 0                     | PP_SEQUENCE_STATE_MASK)
+#define IDLE_ON_VALUE   	(PP_ON | PP_SEQUENCE_NONE | 0                     | PP_SEQUENCE_STATE_ON_IDLE)
+
+#define IDLE_OFF_MASK		(PP_ON | PP_SEQUENCE_MASK | 0                     | 0)
+#define IDLE_OFF_VALUE		(0     | PP_SEQUENCE_NONE | 0                     | 0)
+
+#define IDLE_CYCLE_MASK		(PP_ON | PP_SEQUENCE_MASK | PP_CYCLE_DELAY_ACTIVE | PP_SEQUENCE_STATE_MASK)
+#define IDLE_CYCLE_VALUE	(0     | PP_SEQUENCE_NONE | 0                     | PP_SEQUENCE_STATE_OFF_IDLE)
+
+static void intel_pps_verify_state(struct intel_dp *intel_dp);
+
+static void wait_panel_status(struct intel_dp *intel_dp,
+				       u32 mask,
+				       u32 value)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	i915_reg_t pp_stat_reg, pp_ctrl_reg;
+
+	lockdep_assert_held(&dev_priv->display.pps.mutex);
+
+	intel_pps_verify_state(intel_dp);
+
+	pp_stat_reg = _pp_stat_reg(intel_dp);
+	pp_ctrl_reg = _pp_ctrl_reg(intel_dp);
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "mask %08x value %08x status %08x control %08x\n",
+		    mask, value,
+		    intel_de_read(dev_priv, pp_stat_reg),
+		    intel_de_read(dev_priv, pp_ctrl_reg));
+
+	if (intel_de_wait_for_register(dev_priv, pp_stat_reg,
+				       mask, value, 5000))
+		drm_err(&dev_priv->drm,
+			"Panel status timeout: status %08x control %08x\n",
+			intel_de_read(dev_priv, pp_stat_reg),
+			intel_de_read(dev_priv, pp_ctrl_reg));
+
+	drm_dbg_kms(&dev_priv->drm, "Wait complete\n");
+}
+
+static void wait_panel_on(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+
+	drm_dbg_kms(&i915->drm, "Wait for panel power on\n");
+	wait_panel_status(intel_dp, IDLE_ON_MASK, IDLE_ON_VALUE);
+}
+
+static void wait_panel_off(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+
+	drm_dbg_kms(&i915->drm, "Wait for panel power off time\n");
+	wait_panel_status(intel_dp, IDLE_OFF_MASK, IDLE_OFF_VALUE);
+}
+
+static void wait_panel_power_cycle(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	ktime_t panel_power_on_time;
+	s64 panel_power_off_duration;
+
+	drm_dbg_kms(&i915->drm, "Wait for panel power cycle\n");
+
+	/* take the difference of current time and panel power off time
+	 * and then make panel wait for t11_t12 if needed. */
+	panel_power_on_time = ktime_get_boottime();
+	panel_power_off_duration = ktime_ms_delta(panel_power_on_time, intel_dp->pps.panel_power_off_time);
+
+	/* When we disable the VDD override bit last we have to do the manual
+	 * wait. */
+	if (panel_power_off_duration < (s64)intel_dp->pps.panel_power_cycle_delay)
+		wait_remaining_ms_from_jiffies(jiffies,
+				       intel_dp->pps.panel_power_cycle_delay - panel_power_off_duration);
+
+	wait_panel_status(intel_dp, IDLE_CYCLE_MASK, IDLE_CYCLE_VALUE);
+}
+
+void intel_pps_wait_power_cycle(struct intel_dp *intel_dp)
+{
+	intel_wakeref_t wakeref;
+
+	if (!intel_dp_is_edp(intel_dp))
+		return;
+
+	with_intel_pps_lock(intel_dp, wakeref)
+		wait_panel_power_cycle(intel_dp);
+}
+
+static void wait_backlight_on(struct intel_dp *intel_dp)
+{
+	wait_remaining_ms_from_jiffies(intel_dp->pps.last_power_on,
+				       intel_dp->pps.backlight_on_delay);
+}
+
+static void edp_wait_backlight_off(struct intel_dp *intel_dp)
+{
+	wait_remaining_ms_from_jiffies(intel_dp->pps.last_backlight_off,
+				       intel_dp->pps.backlight_off_delay);
+}
+
+/* Read the current pp_control value, unlocking the register if it
+ * is locked
+ */
+
+static  u32 ilk_get_pp_control(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	u32 control;
+
+	lockdep_assert_held(&dev_priv->display.pps.mutex);
+
+	control = intel_de_read(dev_priv, _pp_ctrl_reg(intel_dp));
+	if (drm_WARN_ON(&dev_priv->drm, !HAS_DDI(dev_priv) &&
+			(control & PANEL_UNLOCK_MASK) != PANEL_UNLOCK_REGS)) {
+		control &= ~PANEL_UNLOCK_MASK;
+		control |= PANEL_UNLOCK_REGS;
+	}
+	return control;
+}
+
+/*
+ * Must be paired with intel_pps_vdd_off_unlocked().
+ * Must hold pps_mutex around the whole on/off sequence.
+ * Can be nested with intel_pps_vdd_{on,off}() calls.
+ */
+bool intel_pps_vdd_on_unlocked(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	u32 pp;
+	i915_reg_t pp_stat_reg, pp_ctrl_reg;
+	bool need_to_disable = !intel_dp->pps.want_panel_vdd;
+
+	lockdep_assert_held(&dev_priv->display.pps.mutex);
+
+	if (!intel_dp_is_edp(intel_dp))
+		return false;
+
+	cancel_delayed_work(&intel_dp->pps.panel_vdd_work);
+	intel_dp->pps.want_panel_vdd = true;
+
+	if (edp_have_panel_vdd(intel_dp))
+		return need_to_disable;
+
+	drm_WARN_ON(&dev_priv->drm, intel_dp->pps.vdd_wakeref);
+	intel_dp->pps.vdd_wakeref = intel_display_power_get(dev_priv,
+							    intel_aux_power_domain(dig_port));
+
+	drm_dbg_kms(&dev_priv->drm, "Turning [ENCODER:%d:%s] VDD on\n",
+		    dig_port->base.base.base.id,
+		    dig_port->base.base.name);
+
+	if (!edp_have_panel_power(intel_dp))
+		wait_panel_power_cycle(intel_dp);
+
+	pp = ilk_get_pp_control(intel_dp);
+	pp |= EDP_FORCE_VDD;
+
+	pp_stat_reg = _pp_stat_reg(intel_dp);
+	pp_ctrl_reg = _pp_ctrl_reg(intel_dp);
+
+	intel_de_write(dev_priv, pp_ctrl_reg, pp);
+	intel_de_posting_read(dev_priv, pp_ctrl_reg);
+	drm_dbg_kms(&dev_priv->drm, "PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n",
+		    intel_de_read(dev_priv, pp_stat_reg),
+		    intel_de_read(dev_priv, pp_ctrl_reg));
+	/*
+	 * If the panel wasn't on, delay before accessing aux channel
+	 */
+	if (!edp_have_panel_power(intel_dp)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "[ENCODER:%d:%s] panel power wasn't enabled\n",
+			    dig_port->base.base.base.id,
+			    dig_port->base.base.name);
+		msleep(intel_dp->pps.panel_power_up_delay);
+	}
+
+	return need_to_disable;
+}
+
+/*
+ * Must be paired with intel_pps_off().
+ * Nested calls to these functions are not allowed since
+ * we drop the lock. Caller must use some higher level
+ * locking to prevent nested calls from other threads.
+ */
+void intel_pps_vdd_on(struct intel_dp *intel_dp)
+{
+	intel_wakeref_t wakeref;
+	bool vdd;
+
+	if (!intel_dp_is_edp(intel_dp))
+		return;
+
+	vdd = false;
+	with_intel_pps_lock(intel_dp, wakeref)
+		vdd = intel_pps_vdd_on_unlocked(intel_dp);
+	I915_STATE_WARN(!vdd, "[ENCODER:%d:%s] VDD already requested on\n",
+			dp_to_dig_port(intel_dp)->base.base.base.id,
+			dp_to_dig_port(intel_dp)->base.base.name);
+}
+
+static void intel_pps_vdd_off_sync_unlocked(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_digital_port *dig_port =
+		dp_to_dig_port(intel_dp);
+	u32 pp;
+	i915_reg_t pp_stat_reg, pp_ctrl_reg;
+
+	lockdep_assert_held(&dev_priv->display.pps.mutex);
+
+	drm_WARN_ON(&dev_priv->drm, intel_dp->pps.want_panel_vdd);
+
+	if (!edp_have_panel_vdd(intel_dp))
+		return;
+
+	drm_dbg_kms(&dev_priv->drm, "Turning [ENCODER:%d:%s] VDD off\n",
+		    dig_port->base.base.base.id,
+		    dig_port->base.base.name);
+
+	pp = ilk_get_pp_control(intel_dp);
+	pp &= ~EDP_FORCE_VDD;
+
+	pp_ctrl_reg = _pp_ctrl_reg(intel_dp);
+	pp_stat_reg = _pp_stat_reg(intel_dp);
+
+	intel_de_write(dev_priv, pp_ctrl_reg, pp);
+	intel_de_posting_read(dev_priv, pp_ctrl_reg);
+
+	/* Make sure sequencer is idle before allowing subsequent activity */
+	drm_dbg_kms(&dev_priv->drm, "PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n",
+		    intel_de_read(dev_priv, pp_stat_reg),
+		    intel_de_read(dev_priv, pp_ctrl_reg));
+
+	if ((pp & PANEL_POWER_ON) == 0)
+		intel_dp->pps.panel_power_off_time = ktime_get_boottime();
+
+	intel_display_power_put(dev_priv,
+				intel_aux_power_domain(dig_port),
+				fetch_and_zero(&intel_dp->pps.vdd_wakeref));
+}
+
+void intel_pps_vdd_off_sync(struct intel_dp *intel_dp)
+{
+	intel_wakeref_t wakeref;
+
+	if (!intel_dp_is_edp(intel_dp))
+		return;
+
+	cancel_delayed_work_sync(&intel_dp->pps.panel_vdd_work);
+	/*
+	 * vdd might still be enabled due to the delayed vdd off.
+	 * Make sure vdd is actually turned off here.
+	 */
+	with_intel_pps_lock(intel_dp, wakeref)
+		intel_pps_vdd_off_sync_unlocked(intel_dp);
+}
+
+static void edp_panel_vdd_work(struct work_struct *__work)
+{
+	struct intel_pps *pps = container_of(to_delayed_work(__work),
+					     struct intel_pps, panel_vdd_work);
+	struct intel_dp *intel_dp = container_of(pps, struct intel_dp, pps);
+	intel_wakeref_t wakeref;
+
+	with_intel_pps_lock(intel_dp, wakeref) {
+		if (!intel_dp->pps.want_panel_vdd)
+			intel_pps_vdd_off_sync_unlocked(intel_dp);
+	}
+}
+
+static void edp_panel_vdd_schedule_off(struct intel_dp *intel_dp)
+{
+	unsigned long delay;
+
+	/*
+	 * We may not yet know the real power sequencing delays,
+	 * so keep VDD enabled until we're done with init.
+	 */
+	if (intel_dp->pps.initializing)
+		return;
+
+	/*
+	 * Queue the timer to fire a long time from now (relative to the power
+	 * down delay) to keep the panel power up across a sequence of
+	 * operations.
+	 */
+	delay = msecs_to_jiffies(intel_dp->pps.panel_power_cycle_delay * 5);
+	schedule_delayed_work(&intel_dp->pps.panel_vdd_work, delay);
+}
+
+/*
+ * Must be paired with edp_panel_vdd_on().
+ * Must hold pps_mutex around the whole on/off sequence.
+ * Can be nested with intel_pps_vdd_{on,off}() calls.
+ */
+void intel_pps_vdd_off_unlocked(struct intel_dp *intel_dp, bool sync)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+	lockdep_assert_held(&dev_priv->display.pps.mutex);
+
+	if (!intel_dp_is_edp(intel_dp))
+		return;
+
+	I915_STATE_WARN(!intel_dp->pps.want_panel_vdd, "[ENCODER:%d:%s] VDD not forced on",
+			dp_to_dig_port(intel_dp)->base.base.base.id,
+			dp_to_dig_port(intel_dp)->base.base.name);
+
+	intel_dp->pps.want_panel_vdd = false;
+
+	if (sync)
+		intel_pps_vdd_off_sync_unlocked(intel_dp);
+	else
+		edp_panel_vdd_schedule_off(intel_dp);
+}
+
+void intel_pps_on_unlocked(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	u32 pp;
+	i915_reg_t pp_ctrl_reg;
+
+	lockdep_assert_held(&dev_priv->display.pps.mutex);
+
+	if (!intel_dp_is_edp(intel_dp))
+		return;
+
+	drm_dbg_kms(&dev_priv->drm, "Turn [ENCODER:%d:%s] panel power on\n",
+		    dp_to_dig_port(intel_dp)->base.base.base.id,
+		    dp_to_dig_port(intel_dp)->base.base.name);
+
+	if (drm_WARN(&dev_priv->drm, edp_have_panel_power(intel_dp),
+		     "[ENCODER:%d:%s] panel power already on\n",
+		     dp_to_dig_port(intel_dp)->base.base.base.id,
+		     dp_to_dig_port(intel_dp)->base.base.name))
+		return;
+
+	wait_panel_power_cycle(intel_dp);
+
+	pp_ctrl_reg = _pp_ctrl_reg(intel_dp);
+	pp = ilk_get_pp_control(intel_dp);
+	if (IS_IRONLAKE(dev_priv)) {
+		/* ILK workaround: disable reset around power sequence */
+		pp &= ~PANEL_POWER_RESET;
+		intel_de_write(dev_priv, pp_ctrl_reg, pp);
+		intel_de_posting_read(dev_priv, pp_ctrl_reg);
+	}
+
+	pp |= PANEL_POWER_ON;
+	if (!IS_IRONLAKE(dev_priv))
+		pp |= PANEL_POWER_RESET;
+
+	intel_de_write(dev_priv, pp_ctrl_reg, pp);
+	intel_de_posting_read(dev_priv, pp_ctrl_reg);
+
+	wait_panel_on(intel_dp);
+	intel_dp->pps.last_power_on = jiffies;
+
+	if (IS_IRONLAKE(dev_priv)) {
+		pp |= PANEL_POWER_RESET; /* restore panel reset bit */
+		intel_de_write(dev_priv, pp_ctrl_reg, pp);
+		intel_de_posting_read(dev_priv, pp_ctrl_reg);
+	}
+}
+
+void intel_pps_on(struct intel_dp *intel_dp)
+{
+	intel_wakeref_t wakeref;
+
+	if (!intel_dp_is_edp(intel_dp))
+		return;
+
+	with_intel_pps_lock(intel_dp, wakeref)
+		intel_pps_on_unlocked(intel_dp);
+}
+
+void intel_pps_off_unlocked(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	u32 pp;
+	i915_reg_t pp_ctrl_reg;
+
+	lockdep_assert_held(&dev_priv->display.pps.mutex);
+
+	if (!intel_dp_is_edp(intel_dp))
+		return;
+
+	drm_dbg_kms(&dev_priv->drm, "Turn [ENCODER:%d:%s] panel power off\n",
+		    dig_port->base.base.base.id, dig_port->base.base.name);
+
+	drm_WARN(&dev_priv->drm, !intel_dp->pps.want_panel_vdd,
+		 "Need [ENCODER:%d:%s] VDD to turn off panel\n",
+		 dig_port->base.base.base.id, dig_port->base.base.name);
+
+	pp = ilk_get_pp_control(intel_dp);
+	/* We need to switch off panel power _and_ force vdd, for otherwise some
+	 * panels get very unhappy and cease to work. */
+	pp &= ~(PANEL_POWER_ON | PANEL_POWER_RESET | EDP_FORCE_VDD |
+		EDP_BLC_ENABLE);
+
+	pp_ctrl_reg = _pp_ctrl_reg(intel_dp);
+
+	intel_dp->pps.want_panel_vdd = false;
+
+	intel_de_write(dev_priv, pp_ctrl_reg, pp);
+	intel_de_posting_read(dev_priv, pp_ctrl_reg);
+
+	wait_panel_off(intel_dp);
+	intel_dp->pps.panel_power_off_time = ktime_get_boottime();
+
+	/* We got a reference when we enabled the VDD. */
+	intel_display_power_put(dev_priv,
+				intel_aux_power_domain(dig_port),
+				fetch_and_zero(&intel_dp->pps.vdd_wakeref));
+}
+
+void intel_pps_off(struct intel_dp *intel_dp)
+{
+	intel_wakeref_t wakeref;
+
+	if (!intel_dp_is_edp(intel_dp))
+		return;
+
+	with_intel_pps_lock(intel_dp, wakeref)
+		intel_pps_off_unlocked(intel_dp);
+}
+
+/* Enable backlight in the panel power control. */
+void intel_pps_backlight_on(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	intel_wakeref_t wakeref;
+
+	/*
+	 * If we enable the backlight right away following a panel power
+	 * on, we may see slight flicker as the panel syncs with the eDP
+	 * link.  So delay a bit to make sure the image is solid before
+	 * allowing it to appear.
+	 */
+	wait_backlight_on(intel_dp);
+
+	with_intel_pps_lock(intel_dp, wakeref) {
+		i915_reg_t pp_ctrl_reg = _pp_ctrl_reg(intel_dp);
+		u32 pp;
+
+		pp = ilk_get_pp_control(intel_dp);
+		pp |= EDP_BLC_ENABLE;
+
+		intel_de_write(dev_priv, pp_ctrl_reg, pp);
+		intel_de_posting_read(dev_priv, pp_ctrl_reg);
+	}
+}
+
+/* Disable backlight in the panel power control. */
+void intel_pps_backlight_off(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	intel_wakeref_t wakeref;
+
+	if (!intel_dp_is_edp(intel_dp))
+		return;
+
+	with_intel_pps_lock(intel_dp, wakeref) {
+		i915_reg_t pp_ctrl_reg = _pp_ctrl_reg(intel_dp);
+		u32 pp;
+
+		pp = ilk_get_pp_control(intel_dp);
+		pp &= ~EDP_BLC_ENABLE;
+
+		intel_de_write(dev_priv, pp_ctrl_reg, pp);
+		intel_de_posting_read(dev_priv, pp_ctrl_reg);
+	}
+
+	intel_dp->pps.last_backlight_off = jiffies;
+	edp_wait_backlight_off(intel_dp);
+}
+
+/*
+ * Hook for controlling the panel power control backlight through the bl_power
+ * sysfs attribute. Take care to handle multiple calls.
+ */
+void intel_pps_backlight_power(struct intel_connector *connector, bool enable)
+{
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+	struct intel_dp *intel_dp = intel_attached_dp(connector);
+	intel_wakeref_t wakeref;
+	bool is_enabled;
+
+	is_enabled = false;
+	with_intel_pps_lock(intel_dp, wakeref)
+		is_enabled = ilk_get_pp_control(intel_dp) & EDP_BLC_ENABLE;
+	if (is_enabled == enable)
+		return;
+
+	drm_dbg_kms(&i915->drm, "panel power control backlight %s\n",
+		    enable ? "enable" : "disable");
+
+	if (enable)
+		intel_pps_backlight_on(intel_dp);
+	else
+		intel_pps_backlight_off(intel_dp);
+}
+
+static void vlv_detach_power_sequencer(struct intel_dp *intel_dp)
+{
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
+	enum pipe pipe = intel_dp->pps.pps_pipe;
+	i915_reg_t pp_on_reg = PP_ON_DELAYS(pipe);
+
+	drm_WARN_ON(&dev_priv->drm, intel_dp->pps.active_pipe != INVALID_PIPE);
+
+	if (drm_WARN_ON(&dev_priv->drm, pipe != PIPE_A && pipe != PIPE_B))
+		return;
+
+	intel_pps_vdd_off_sync_unlocked(intel_dp);
+
+	/*
+	 * VLV seems to get confused when multiple power sequencers
+	 * have the same port selected (even if only one has power/vdd
+	 * enabled). The failure manifests as vlv_wait_port_ready() failing
+	 * CHV on the other hand doesn't seem to mind having the same port
+	 * selected in multiple power sequencers, but let's clear the
+	 * port select always when logically disconnecting a power sequencer
+	 * from a port.
+	 */
+	drm_dbg_kms(&dev_priv->drm,
+		    "detaching pipe %c power sequencer from [ENCODER:%d:%s]\n",
+		    pipe_name(pipe), dig_port->base.base.base.id,
+		    dig_port->base.base.name);
+	intel_de_write(dev_priv, pp_on_reg, 0);
+	intel_de_posting_read(dev_priv, pp_on_reg);
+
+	intel_dp->pps.pps_pipe = INVALID_PIPE;
+}
+
+static void vlv_steal_power_sequencer(struct drm_i915_private *dev_priv,
+				      enum pipe pipe)
+{
+	struct intel_encoder *encoder;
+
+	lockdep_assert_held(&dev_priv->display.pps.mutex);
+
+	for_each_intel_dp(&dev_priv->drm, encoder) {
+		struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+
+		drm_WARN(&dev_priv->drm, intel_dp->pps.active_pipe == pipe,
+			 "stealing pipe %c power sequencer from active [ENCODER:%d:%s]\n",
+			 pipe_name(pipe), encoder->base.base.id,
+			 encoder->base.name);
+
+		if (intel_dp->pps.pps_pipe != pipe)
+			continue;
+
+		drm_dbg_kms(&dev_priv->drm,
+			    "stealing pipe %c power sequencer from [ENCODER:%d:%s]\n",
+			    pipe_name(pipe), encoder->base.base.id,
+			    encoder->base.name);
+
+		/* make sure vdd is off before we steal it */
+		vlv_detach_power_sequencer(intel_dp);
+	}
+}
+
+void vlv_pps_init(struct intel_encoder *encoder,
+		  const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+
+	lockdep_assert_held(&dev_priv->display.pps.mutex);
+
+	drm_WARN_ON(&dev_priv->drm, intel_dp->pps.active_pipe != INVALID_PIPE);
+
+	if (intel_dp->pps.pps_pipe != INVALID_PIPE &&
+	    intel_dp->pps.pps_pipe != crtc->pipe) {
+		/*
+		 * If another power sequencer was being used on this
+		 * port previously make sure to turn off vdd there while
+		 * we still have control of it.
+		 */
+		vlv_detach_power_sequencer(intel_dp);
+	}
+
+	/*
+	 * We may be stealing the power
+	 * sequencer from another port.
+	 */
+	vlv_steal_power_sequencer(dev_priv, crtc->pipe);
+
+	intel_dp->pps.active_pipe = crtc->pipe;
+
+	if (!intel_dp_is_edp(intel_dp))
+		return;
+
+	/* now it's all ours */
+	intel_dp->pps.pps_pipe = crtc->pipe;
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "initializing pipe %c power sequencer for [ENCODER:%d:%s]\n",
+		    pipe_name(intel_dp->pps.pps_pipe), encoder->base.base.id,
+		    encoder->base.name);
+
+	/* init power sequencer on this pipe and port */
+	pps_init_delays(intel_dp);
+	pps_init_registers(intel_dp, true);
+}
+
+static void pps_vdd_init(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+
+	lockdep_assert_held(&dev_priv->display.pps.mutex);
+
+	if (!edp_have_panel_vdd(intel_dp))
+		return;
+
+	/*
+	 * The VDD bit needs a power domain reference, so if the bit is
+	 * already enabled when we boot or resume, grab this reference and
+	 * schedule a vdd off, so we don't hold on to the reference
+	 * indefinitely.
+	 */
+	drm_dbg_kms(&dev_priv->drm,
+		    "VDD left on by BIOS, adjusting state tracking\n");
+	drm_WARN_ON(&dev_priv->drm, intel_dp->pps.vdd_wakeref);
+	intel_dp->pps.vdd_wakeref = intel_display_power_get(dev_priv,
+							    intel_aux_power_domain(dig_port));
+}
+
+bool intel_pps_have_panel_power_or_vdd(struct intel_dp *intel_dp)
+{
+	intel_wakeref_t wakeref;
+	bool have_power = false;
+
+	with_intel_pps_lock(intel_dp, wakeref) {
+		have_power = edp_have_panel_power(intel_dp) ||
+			     edp_have_panel_vdd(intel_dp);
+	}
+
+	return have_power;
+}
+
+static void pps_init_timestamps(struct intel_dp *intel_dp)
+{
+	intel_dp->pps.panel_power_off_time = ktime_get_boottime();
+	intel_dp->pps.last_power_on = jiffies;
+	intel_dp->pps.last_backlight_off = jiffies;
+}
+
+static void
+intel_pps_readout_hw_state(struct intel_dp *intel_dp, struct edp_power_seq *seq)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	u32 pp_on, pp_off, pp_ctl;
+	struct pps_registers regs;
+
+	intel_pps_get_registers(intel_dp, &regs);
+
+	pp_ctl = ilk_get_pp_control(intel_dp);
+
+	/* Ensure PPS is unlocked */
+	if (!HAS_DDI(dev_priv))
+		intel_de_write(dev_priv, regs.pp_ctrl, pp_ctl);
+
+	pp_on = intel_de_read(dev_priv, regs.pp_on);
+	pp_off = intel_de_read(dev_priv, regs.pp_off);
+
+	/* Pull timing values out of registers */
+	seq->t1_t3 = REG_FIELD_GET(PANEL_POWER_UP_DELAY_MASK, pp_on);
+	seq->t8 = REG_FIELD_GET(PANEL_LIGHT_ON_DELAY_MASK, pp_on);
+	seq->t9 = REG_FIELD_GET(PANEL_LIGHT_OFF_DELAY_MASK, pp_off);
+	seq->t10 = REG_FIELD_GET(PANEL_POWER_DOWN_DELAY_MASK, pp_off);
+
+	if (i915_mmio_reg_valid(regs.pp_div)) {
+		u32 pp_div;
+
+		pp_div = intel_de_read(dev_priv, regs.pp_div);
+
+		seq->t11_t12 = REG_FIELD_GET(PANEL_POWER_CYCLE_DELAY_MASK, pp_div) * 1000;
+	} else {
+		seq->t11_t12 = REG_FIELD_GET(BXT_POWER_CYCLE_DELAY_MASK, pp_ctl) * 1000;
+	}
+}
+
+static void
+intel_pps_dump_state(struct intel_dp *intel_dp, const char *state_name,
+		     const struct edp_power_seq *seq)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+
+	drm_dbg_kms(&i915->drm, "%s t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n",
+		    state_name,
+		    seq->t1_t3, seq->t8, seq->t9, seq->t10, seq->t11_t12);
+}
+
+static void
+intel_pps_verify_state(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	struct edp_power_seq hw;
+	struct edp_power_seq *sw = &intel_dp->pps.pps_delays;
+
+	intel_pps_readout_hw_state(intel_dp, &hw);
+
+	if (hw.t1_t3 != sw->t1_t3 || hw.t8 != sw->t8 || hw.t9 != sw->t9 ||
+	    hw.t10 != sw->t10 || hw.t11_t12 != sw->t11_t12) {
+		drm_err(&i915->drm, "PPS state mismatch\n");
+		intel_pps_dump_state(intel_dp, "sw", sw);
+		intel_pps_dump_state(intel_dp, "hw", &hw);
+	}
+}
+
+static bool pps_delays_valid(struct edp_power_seq *delays)
+{
+	return delays->t1_t3 || delays->t8 || delays->t9 ||
+		delays->t10 || delays->t11_t12;
+}
+
+static void pps_init_delays_bios(struct intel_dp *intel_dp,
+				 struct edp_power_seq *bios)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+	lockdep_assert_held(&dev_priv->display.pps.mutex);
+
+	if (!pps_delays_valid(&intel_dp->pps.bios_pps_delays))
+		intel_pps_readout_hw_state(intel_dp, &intel_dp->pps.bios_pps_delays);
+
+	*bios = intel_dp->pps.bios_pps_delays;
+
+	intel_pps_dump_state(intel_dp, "bios", bios);
+}
+
+static void pps_init_delays_vbt(struct intel_dp *intel_dp,
+				struct edp_power_seq *vbt)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_connector *connector = intel_dp->attached_connector;
+
+	*vbt = connector->panel.vbt.edp.pps;
+
+	if (!pps_delays_valid(vbt))
+		return;
+
+	/* On Toshiba Satellite P50-C-18C system the VBT T12 delay
+	 * of 500ms appears to be too short. Ocassionally the panel
+	 * just fails to power back on. Increasing the delay to 800ms
+	 * seems sufficient to avoid this problem.
+	 */
+	if (intel_has_quirk(dev_priv, QUIRK_INCREASE_T12_DELAY)) {
+		vbt->t11_t12 = max_t(u16, vbt->t11_t12, 1300 * 10);
+		drm_dbg_kms(&dev_priv->drm,
+			    "Increasing T12 panel delay as per the quirk to %d\n",
+			    vbt->t11_t12);
+	}
+
+	/* T11_T12 delay is special and actually in units of 100ms, but zero
+	 * based in the hw (so we need to add 100 ms). But the sw vbt
+	 * table multiplies it with 1000 to make it in units of 100usec,
+	 * too. */
+	vbt->t11_t12 += 100 * 10;
+
+	intel_pps_dump_state(intel_dp, "vbt", vbt);
+}
+
+static void pps_init_delays_spec(struct intel_dp *intel_dp,
+				 struct edp_power_seq *spec)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+	lockdep_assert_held(&dev_priv->display.pps.mutex);
+
+	/* Upper limits from eDP 1.3 spec. Note that we use the clunky units of
+	 * our hw here, which are all in 100usec. */
+	spec->t1_t3 = 210 * 10;
+	spec->t8 = 50 * 10; /* no limit for t8, use t7 instead */
+	spec->t9 = 50 * 10; /* no limit for t9, make it symmetric with t8 */
+	spec->t10 = 500 * 10;
+	/* This one is special and actually in units of 100ms, but zero
+	 * based in the hw (so we need to add 100 ms). But the sw vbt
+	 * table multiplies it with 1000 to make it in units of 100usec,
+	 * too. */
+	spec->t11_t12 = (510 + 100) * 10;
+
+	intel_pps_dump_state(intel_dp, "spec", spec);
+}
+
+static void pps_init_delays(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct edp_power_seq cur, vbt, spec,
+		*final = &intel_dp->pps.pps_delays;
+
+	lockdep_assert_held(&dev_priv->display.pps.mutex);
+
+	/* already initialized? */
+	if (pps_delays_valid(final))
+		return;
+
+	pps_init_delays_bios(intel_dp, &cur);
+	pps_init_delays_vbt(intel_dp, &vbt);
+	pps_init_delays_spec(intel_dp, &spec);
+
+	/* Use the max of the register settings and vbt. If both are
+	 * unset, fall back to the spec limits. */
+#define assign_final(field)	final->field = (max(cur.field, vbt.field) == 0 ? \
+				       spec.field : \
+				       max(cur.field, vbt.field))
+	assign_final(t1_t3);
+	assign_final(t8);
+	assign_final(t9);
+	assign_final(t10);
+	assign_final(t11_t12);
+#undef assign_final
+
+#define get_delay(field)	(DIV_ROUND_UP(final->field, 10))
+	intel_dp->pps.panel_power_up_delay = get_delay(t1_t3);
+	intel_dp->pps.backlight_on_delay = get_delay(t8);
+	intel_dp->pps.backlight_off_delay = get_delay(t9);
+	intel_dp->pps.panel_power_down_delay = get_delay(t10);
+	intel_dp->pps.panel_power_cycle_delay = get_delay(t11_t12);
+#undef get_delay
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "panel power up delay %d, power down delay %d, power cycle delay %d\n",
+		    intel_dp->pps.panel_power_up_delay,
+		    intel_dp->pps.panel_power_down_delay,
+		    intel_dp->pps.panel_power_cycle_delay);
+
+	drm_dbg_kms(&dev_priv->drm, "backlight on delay %d, off delay %d\n",
+		    intel_dp->pps.backlight_on_delay,
+		    intel_dp->pps.backlight_off_delay);
+
+	/*
+	 * We override the HW backlight delays to 1 because we do manual waits
+	 * on them. For T8, even BSpec recommends doing it. For T9, if we
+	 * don't do this, we'll end up waiting for the backlight off delay
+	 * twice: once when we do the manual sleep, and once when we disable
+	 * the panel and wait for the PP_STATUS bit to become zero.
+	 */
+	final->t8 = 1;
+	final->t9 = 1;
+
+	/*
+	 * HW has only a 100msec granularity for t11_t12 so round it up
+	 * accordingly.
+	 */
+	final->t11_t12 = roundup(final->t11_t12, 100 * 10);
+}
+
+static void pps_init_registers(struct intel_dp *intel_dp, bool force_disable_vdd)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	u32 pp_on, pp_off, port_sel = 0;
+	int div = RUNTIME_INFO(dev_priv)->rawclk_freq / 1000;
+	struct pps_registers regs;
+	enum port port = dp_to_dig_port(intel_dp)->base.port;
+	const struct edp_power_seq *seq = &intel_dp->pps.pps_delays;
+
+	lockdep_assert_held(&dev_priv->display.pps.mutex);
+
+	intel_pps_get_registers(intel_dp, &regs);
+
+	/*
+	 * On some VLV machines the BIOS can leave the VDD
+	 * enabled even on power sequencers which aren't
+	 * hooked up to any port. This would mess up the
+	 * power domain tracking the first time we pick
+	 * one of these power sequencers for use since
+	 * intel_pps_vdd_on_unlocked() would notice that the VDD was
+	 * already on and therefore wouldn't grab the power
+	 * domain reference. Disable VDD first to avoid this.
+	 * This also avoids spuriously turning the VDD on as
+	 * soon as the new power sequencer gets initialized.
+	 */
+	if (force_disable_vdd) {
+		u32 pp = ilk_get_pp_control(intel_dp);
+
+		drm_WARN(&dev_priv->drm, pp & PANEL_POWER_ON,
+			 "Panel power already on\n");
+
+		if (pp & EDP_FORCE_VDD)
+			drm_dbg_kms(&dev_priv->drm,
+				    "VDD already on, disabling first\n");
+
+		pp &= ~EDP_FORCE_VDD;
+
+		intel_de_write(dev_priv, regs.pp_ctrl, pp);
+	}
+
+	pp_on = REG_FIELD_PREP(PANEL_POWER_UP_DELAY_MASK, seq->t1_t3) |
+		REG_FIELD_PREP(PANEL_LIGHT_ON_DELAY_MASK, seq->t8);
+	pp_off = REG_FIELD_PREP(PANEL_LIGHT_OFF_DELAY_MASK, seq->t9) |
+		REG_FIELD_PREP(PANEL_POWER_DOWN_DELAY_MASK, seq->t10);
+
+	/* Haswell doesn't have any port selection bits for the panel
+	 * power sequencer any more. */
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+		port_sel = PANEL_PORT_SELECT_VLV(port);
+	} else if (HAS_PCH_IBX(dev_priv) || HAS_PCH_CPT(dev_priv)) {
+		switch (port) {
+		case PORT_A:
+			port_sel = PANEL_PORT_SELECT_DPA;
+			break;
+		case PORT_C:
+			port_sel = PANEL_PORT_SELECT_DPC;
+			break;
+		case PORT_D:
+			port_sel = PANEL_PORT_SELECT_DPD;
+			break;
+		default:
+			MISSING_CASE(port);
+			break;
+		}
+	}
+
+	pp_on |= port_sel;
+
+	intel_de_write(dev_priv, regs.pp_on, pp_on);
+	intel_de_write(dev_priv, regs.pp_off, pp_off);
+
+	/*
+	 * Compute the divisor for the pp clock, simply match the Bspec formula.
+	 */
+	if (i915_mmio_reg_valid(regs.pp_div)) {
+		intel_de_write(dev_priv, regs.pp_div,
+			       REG_FIELD_PREP(PP_REFERENCE_DIVIDER_MASK, (100 * div) / 2 - 1) | REG_FIELD_PREP(PANEL_POWER_CYCLE_DELAY_MASK, DIV_ROUND_UP(seq->t11_t12, 1000)));
+	} else {
+		u32 pp_ctl;
+
+		pp_ctl = intel_de_read(dev_priv, regs.pp_ctrl);
+		pp_ctl &= ~BXT_POWER_CYCLE_DELAY_MASK;
+		pp_ctl |= REG_FIELD_PREP(BXT_POWER_CYCLE_DELAY_MASK, DIV_ROUND_UP(seq->t11_t12, 1000));
+		intel_de_write(dev_priv, regs.pp_ctrl, pp_ctl);
+	}
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "panel power sequencer register settings: PP_ON %#x, PP_OFF %#x, PP_DIV %#x\n",
+		    intel_de_read(dev_priv, regs.pp_on),
+		    intel_de_read(dev_priv, regs.pp_off),
+		    i915_mmio_reg_valid(regs.pp_div) ?
+		    intel_de_read(dev_priv, regs.pp_div) :
+		    (intel_de_read(dev_priv, regs.pp_ctrl) & BXT_POWER_CYCLE_DELAY_MASK));
+}
+
+void intel_pps_encoder_reset(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	intel_wakeref_t wakeref;
+
+	if (!intel_dp_is_edp(intel_dp))
+		return;
+
+	with_intel_pps_lock(intel_dp, wakeref) {
+		/*
+		 * Reinit the power sequencer also on the resume path, in case
+		 * BIOS did something nasty with it.
+		 */
+		if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915))
+			vlv_initial_power_sequencer_setup(intel_dp);
+
+		pps_init_delays(intel_dp);
+		pps_init_registers(intel_dp, false);
+		pps_vdd_init(intel_dp);
+
+		if (edp_have_panel_vdd(intel_dp))
+			edp_panel_vdd_schedule_off(intel_dp);
+	}
+}
+
+void intel_pps_init(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	intel_wakeref_t wakeref;
+
+	intel_dp->pps.initializing = true;
+	INIT_DELAYED_WORK(&intel_dp->pps.panel_vdd_work, edp_panel_vdd_work);
+
+	pps_init_timestamps(intel_dp);
+
+	with_intel_pps_lock(intel_dp, wakeref) {
+		if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915))
+			vlv_initial_power_sequencer_setup(intel_dp);
+
+		pps_init_delays(intel_dp);
+		pps_init_registers(intel_dp, false);
+		pps_vdd_init(intel_dp);
+	}
+}
+
+void intel_pps_init_late(struct intel_dp *intel_dp)
+{
+	intel_wakeref_t wakeref;
+
+	with_intel_pps_lock(intel_dp, wakeref) {
+		/* Reinit delays after per-panel info has been parsed from VBT */
+		memset(&intel_dp->pps.pps_delays, 0, sizeof(intel_dp->pps.pps_delays));
+		pps_init_delays(intel_dp);
+		pps_init_registers(intel_dp, false);
+
+		intel_dp->pps.initializing = false;
+
+		if (edp_have_panel_vdd(intel_dp))
+			edp_panel_vdd_schedule_off(intel_dp);
+	}
+}
+
+void intel_pps_unlock_regs_wa(struct drm_i915_private *dev_priv)
+{
+	int pps_num;
+	int pps_idx;
+
+	if (!HAS_DISPLAY(dev_priv) || HAS_DDI(dev_priv))
+		return;
+	/*
+	 * This w/a is needed at least on CPT/PPT, but to be sure apply it
+	 * everywhere where registers can be write protected.
+	 */
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
+		pps_num = 2;
+	else
+		pps_num = 1;
+
+	for (pps_idx = 0; pps_idx < pps_num; pps_idx++) {
+		u32 val = intel_de_read(dev_priv, PP_CONTROL(pps_idx));
+
+		val = (val & ~PANEL_UNLOCK_MASK) | PANEL_UNLOCK_REGS;
+		intel_de_write(dev_priv, PP_CONTROL(pps_idx), val);
+	}
+}
+
+void intel_pps_setup(struct drm_i915_private *i915)
+{
+	if (HAS_PCH_SPLIT(i915) || IS_GEMINILAKE(i915) || IS_BROXTON(i915))
+		i915->display.pps.mmio_base = PCH_PPS_BASE;
+	else if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915))
+		i915->display.pps.mmio_base = VLV_PPS_BASE;
+	else
+		i915->display.pps.mmio_base = PPS_BASE;
+}
+
+void assert_pps_unlocked(struct drm_i915_private *dev_priv, enum pipe pipe)
+{
+	i915_reg_t pp_reg;
+	u32 val;
+	enum pipe panel_pipe = INVALID_PIPE;
+	bool locked = true;
+
+	if (drm_WARN_ON(&dev_priv->drm, HAS_DDI(dev_priv)))
+		return;
+
+	if (HAS_PCH_SPLIT(dev_priv)) {
+		u32 port_sel;
+
+		pp_reg = PP_CONTROL(0);
+		port_sel = intel_de_read(dev_priv, PP_ON_DELAYS(0)) & PANEL_PORT_SELECT_MASK;
+
+		switch (port_sel) {
+		case PANEL_PORT_SELECT_LVDS:
+			intel_lvds_port_enabled(dev_priv, PCH_LVDS, &panel_pipe);
+			break;
+		case PANEL_PORT_SELECT_DPA:
+			g4x_dp_port_enabled(dev_priv, DP_A, PORT_A, &panel_pipe);
+			break;
+		case PANEL_PORT_SELECT_DPC:
+			g4x_dp_port_enabled(dev_priv, PCH_DP_C, PORT_C, &panel_pipe);
+			break;
+		case PANEL_PORT_SELECT_DPD:
+			g4x_dp_port_enabled(dev_priv, PCH_DP_D, PORT_D, &panel_pipe);
+			break;
+		default:
+			MISSING_CASE(port_sel);
+			break;
+		}
+	} else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+		/* presumably write lock depends on pipe, not port select */
+		pp_reg = PP_CONTROL(pipe);
+		panel_pipe = pipe;
+	} else {
+		u32 port_sel;
+
+		pp_reg = PP_CONTROL(0);
+		port_sel = intel_de_read(dev_priv, PP_ON_DELAYS(0)) & PANEL_PORT_SELECT_MASK;
+
+		drm_WARN_ON(&dev_priv->drm,
+			    port_sel != PANEL_PORT_SELECT_LVDS);
+		intel_lvds_port_enabled(dev_priv, LVDS, &panel_pipe);
+	}
+
+	val = intel_de_read(dev_priv, pp_reg);
+	if (!(val & PANEL_POWER_ON) ||
+	    ((val & PANEL_UNLOCK_MASK) == PANEL_UNLOCK_REGS))
+		locked = false;
+
+	I915_STATE_WARN(panel_pipe == pipe && locked,
+			"panel assertion failure, pipe %c regs locked\n",
+			pipe_name(pipe));
+}
diff --git a/drivers/gpu/drm/i915/display/intel_pps.h b/drivers/gpu/drm/i915/display/intel_pps.h
new file mode 100644
index 000000000..a3a56f903
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_pps.h
@@ -0,0 +1,56 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#ifndef __INTEL_PPS_H__
+#define __INTEL_PPS_H__
+
+#include <linux/types.h>
+
+#include "intel_wakeref.h"
+
+enum pipe;
+struct drm_i915_private;
+struct intel_connector;
+struct intel_crtc_state;
+struct intel_dp;
+struct intel_encoder;
+
+intel_wakeref_t intel_pps_lock(struct intel_dp *intel_dp);
+intel_wakeref_t intel_pps_unlock(struct intel_dp *intel_dp, intel_wakeref_t wakeref);
+
+#define with_intel_pps_lock(dp, wf)						\
+	for ((wf) = intel_pps_lock(dp); (wf); (wf) = intel_pps_unlock((dp), (wf)))
+
+void intel_pps_backlight_on(struct intel_dp *intel_dp);
+void intel_pps_backlight_off(struct intel_dp *intel_dp);
+void intel_pps_backlight_power(struct intel_connector *connector, bool enable);
+
+bool intel_pps_vdd_on_unlocked(struct intel_dp *intel_dp);
+void intel_pps_vdd_off_unlocked(struct intel_dp *intel_dp, bool sync);
+void intel_pps_on_unlocked(struct intel_dp *intel_dp);
+void intel_pps_off_unlocked(struct intel_dp *intel_dp);
+void intel_pps_check_power_unlocked(struct intel_dp *intel_dp);
+
+void intel_pps_vdd_on(struct intel_dp *intel_dp);
+void intel_pps_on(struct intel_dp *intel_dp);
+void intel_pps_off(struct intel_dp *intel_dp);
+void intel_pps_vdd_off_sync(struct intel_dp *intel_dp);
+bool intel_pps_have_panel_power_or_vdd(struct intel_dp *intel_dp);
+void intel_pps_wait_power_cycle(struct intel_dp *intel_dp);
+
+void intel_pps_init(struct intel_dp *intel_dp);
+void intel_pps_init_late(struct intel_dp *intel_dp);
+void intel_pps_encoder_reset(struct intel_dp *intel_dp);
+void intel_pps_reset_all(struct drm_i915_private *i915);
+
+void vlv_pps_init(struct intel_encoder *encoder,
+		  const struct intel_crtc_state *crtc_state);
+
+void intel_pps_unlock_regs_wa(struct drm_i915_private *i915);
+void intel_pps_setup(struct drm_i915_private *i915);
+
+void assert_pps_unlocked(struct drm_i915_private *i915, enum pipe pipe);
+
+#endif /* __INTEL_PPS_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
new file mode 100644
index 000000000..e2d7c0a68
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -0,0 +1,2656 @@
+/*
+ * Copyright © 2014 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_damage_helper.h>
+
+#include "display/intel_dp.h"
+
+#include "i915_drv.h"
+#include "intel_atomic.h"
+#include "intel_crtc.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_dp_aux.h"
+#include "intel_hdmi.h"
+#include "intel_psr.h"
+#include "intel_snps_phy.h"
+#include "skl_universal_plane.h"
+
+/**
+ * DOC: Panel Self Refresh (PSR/SRD)
+ *
+ * Since Haswell Display controller supports Panel Self-Refresh on display
+ * panels witch have a remote frame buffer (RFB) implemented according to PSR
+ * spec in eDP1.3. PSR feature allows the display to go to lower standby states
+ * when system is idle but display is on as it eliminates display refresh
+ * request to DDR memory completely as long as the frame buffer for that
+ * display is unchanged.
+ *
+ * Panel Self Refresh must be supported by both Hardware (source) and
+ * Panel (sink).
+ *
+ * PSR saves power by caching the framebuffer in the panel RFB, which allows us
+ * to power down the link and memory controller. For DSI panels the same idea
+ * is called "manual mode".
+ *
+ * The implementation uses the hardware-based PSR support which automatically
+ * enters/exits self-refresh mode. The hardware takes care of sending the
+ * required DP aux message and could even retrain the link (that part isn't
+ * enabled yet though). The hardware also keeps track of any frontbuffer
+ * changes to know when to exit self-refresh mode again. Unfortunately that
+ * part doesn't work too well, hence why the i915 PSR support uses the
+ * software frontbuffer tracking to make sure it doesn't miss a screen
+ * update. For this integration intel_psr_invalidate() and intel_psr_flush()
+ * get called by the frontbuffer tracking code. Note that because of locking
+ * issues the self-refresh re-enable code is done from a work queue, which
+ * must be correctly synchronized/cancelled when shutting down the pipe."
+ *
+ * DC3CO (DC3 clock off)
+ *
+ * On top of PSR2, GEN12 adds a intermediate power savings state that turns
+ * clock off automatically during PSR2 idle state.
+ * The smaller overhead of DC3co entry/exit vs. the overhead of PSR2 deep sleep
+ * entry/exit allows the HW to enter a low-power state even when page flipping
+ * periodically (for instance a 30fps video playback scenario).
+ *
+ * Every time a flips occurs PSR2 will get out of deep sleep state(if it was),
+ * so DC3CO is enabled and tgl_dc3co_disable_work is schedule to run after 6
+ * frames, if no other flip occurs and the function above is executed, DC3CO is
+ * disabled and PSR2 is configured to enter deep sleep, resetting again in case
+ * of another flip.
+ * Front buffer modifications do not trigger DC3CO activation on purpose as it
+ * would bring a lot of complexity and most of the moderns systems will only
+ * use page flips.
+ */
+
+static bool psr_global_enabled(struct intel_dp *intel_dp)
+{
+	struct intel_connector *connector = intel_dp->attached_connector;
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+
+	switch (intel_dp->psr.debug & I915_PSR_DEBUG_MODE_MASK) {
+	case I915_PSR_DEBUG_DEFAULT:
+		if (i915->params.enable_psr == -1)
+			return connector->panel.vbt.psr.enable;
+		return i915->params.enable_psr;
+	case I915_PSR_DEBUG_DISABLE:
+		return false;
+	default:
+		return true;
+	}
+}
+
+static bool psr2_global_enabled(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+
+	switch (intel_dp->psr.debug & I915_PSR_DEBUG_MODE_MASK) {
+	case I915_PSR_DEBUG_DISABLE:
+	case I915_PSR_DEBUG_FORCE_PSR1:
+		return false;
+	default:
+		if (i915->params.enable_psr == 1)
+			return false;
+		return true;
+	}
+}
+
+static u32 psr_irq_psr_error_bit_get(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+	return DISPLAY_VER(dev_priv) >= 12 ? TGL_PSR_ERROR :
+		EDP_PSR_ERROR(intel_dp->psr.transcoder);
+}
+
+static u32 psr_irq_post_exit_bit_get(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+	return DISPLAY_VER(dev_priv) >= 12 ? TGL_PSR_POST_EXIT :
+		EDP_PSR_POST_EXIT(intel_dp->psr.transcoder);
+}
+
+static u32 psr_irq_pre_entry_bit_get(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+	return DISPLAY_VER(dev_priv) >= 12 ? TGL_PSR_PRE_ENTRY :
+		EDP_PSR_PRE_ENTRY(intel_dp->psr.transcoder);
+}
+
+static u32 psr_irq_mask_get(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+	return DISPLAY_VER(dev_priv) >= 12 ? TGL_PSR_MASK :
+		EDP_PSR_MASK(intel_dp->psr.transcoder);
+}
+
+static void psr_irq_control(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	i915_reg_t imr_reg;
+	u32 mask, val;
+
+	if (DISPLAY_VER(dev_priv) >= 12)
+		imr_reg = TRANS_PSR_IMR(intel_dp->psr.transcoder);
+	else
+		imr_reg = EDP_PSR_IMR;
+
+	mask = psr_irq_psr_error_bit_get(intel_dp);
+	if (intel_dp->psr.debug & I915_PSR_DEBUG_IRQ)
+		mask |= psr_irq_post_exit_bit_get(intel_dp) |
+			psr_irq_pre_entry_bit_get(intel_dp);
+
+	val = intel_de_read(dev_priv, imr_reg);
+	val &= ~psr_irq_mask_get(intel_dp);
+	val |= ~mask;
+	intel_de_write(dev_priv, imr_reg, val);
+}
+
+static void psr_event_print(struct drm_i915_private *i915,
+			    u32 val, bool psr2_enabled)
+{
+	drm_dbg_kms(&i915->drm, "PSR exit events: 0x%x\n", val);
+	if (val & PSR_EVENT_PSR2_WD_TIMER_EXPIRE)
+		drm_dbg_kms(&i915->drm, "\tPSR2 watchdog timer expired\n");
+	if ((val & PSR_EVENT_PSR2_DISABLED) && psr2_enabled)
+		drm_dbg_kms(&i915->drm, "\tPSR2 disabled\n");
+	if (val & PSR_EVENT_SU_DIRTY_FIFO_UNDERRUN)
+		drm_dbg_kms(&i915->drm, "\tSU dirty FIFO underrun\n");
+	if (val & PSR_EVENT_SU_CRC_FIFO_UNDERRUN)
+		drm_dbg_kms(&i915->drm, "\tSU CRC FIFO underrun\n");
+	if (val & PSR_EVENT_GRAPHICS_RESET)
+		drm_dbg_kms(&i915->drm, "\tGraphics reset\n");
+	if (val & PSR_EVENT_PCH_INTERRUPT)
+		drm_dbg_kms(&i915->drm, "\tPCH interrupt\n");
+	if (val & PSR_EVENT_MEMORY_UP)
+		drm_dbg_kms(&i915->drm, "\tMemory up\n");
+	if (val & PSR_EVENT_FRONT_BUFFER_MODIFY)
+		drm_dbg_kms(&i915->drm, "\tFront buffer modification\n");
+	if (val & PSR_EVENT_WD_TIMER_EXPIRE)
+		drm_dbg_kms(&i915->drm, "\tPSR watchdog timer expired\n");
+	if (val & PSR_EVENT_PIPE_REGISTERS_UPDATE)
+		drm_dbg_kms(&i915->drm, "\tPIPE registers updated\n");
+	if (val & PSR_EVENT_REGISTER_UPDATE)
+		drm_dbg_kms(&i915->drm, "\tRegister updated\n");
+	if (val & PSR_EVENT_HDCP_ENABLE)
+		drm_dbg_kms(&i915->drm, "\tHDCP enabled\n");
+	if (val & PSR_EVENT_KVMR_SESSION_ENABLE)
+		drm_dbg_kms(&i915->drm, "\tKVMR session enabled\n");
+	if (val & PSR_EVENT_VBI_ENABLE)
+		drm_dbg_kms(&i915->drm, "\tVBI enabled\n");
+	if (val & PSR_EVENT_LPSP_MODE_EXIT)
+		drm_dbg_kms(&i915->drm, "\tLPSP mode exited\n");
+	if ((val & PSR_EVENT_PSR_DISABLE) && !psr2_enabled)
+		drm_dbg_kms(&i915->drm, "\tPSR disabled\n");
+}
+
+void intel_psr_irq_handler(struct intel_dp *intel_dp, u32 psr_iir)
+{
+	enum transcoder cpu_transcoder = intel_dp->psr.transcoder;
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	ktime_t time_ns =  ktime_get();
+	i915_reg_t imr_reg;
+
+	if (DISPLAY_VER(dev_priv) >= 12)
+		imr_reg = TRANS_PSR_IMR(intel_dp->psr.transcoder);
+	else
+		imr_reg = EDP_PSR_IMR;
+
+	if (psr_iir & psr_irq_pre_entry_bit_get(intel_dp)) {
+		intel_dp->psr.last_entry_attempt = time_ns;
+		drm_dbg_kms(&dev_priv->drm,
+			    "[transcoder %s] PSR entry attempt in 2 vblanks\n",
+			    transcoder_name(cpu_transcoder));
+	}
+
+	if (psr_iir & psr_irq_post_exit_bit_get(intel_dp)) {
+		intel_dp->psr.last_exit = time_ns;
+		drm_dbg_kms(&dev_priv->drm,
+			    "[transcoder %s] PSR exit completed\n",
+			    transcoder_name(cpu_transcoder));
+
+		if (DISPLAY_VER(dev_priv) >= 9) {
+			u32 val = intel_de_read(dev_priv,
+						PSR_EVENT(cpu_transcoder));
+			bool psr2_enabled = intel_dp->psr.psr2_enabled;
+
+			intel_de_write(dev_priv, PSR_EVENT(cpu_transcoder),
+				       val);
+			psr_event_print(dev_priv, val, psr2_enabled);
+		}
+	}
+
+	if (psr_iir & psr_irq_psr_error_bit_get(intel_dp)) {
+		u32 val;
+
+		drm_warn(&dev_priv->drm, "[transcoder %s] PSR aux error\n",
+			 transcoder_name(cpu_transcoder));
+
+		intel_dp->psr.irq_aux_error = true;
+
+		/*
+		 * If this interruption is not masked it will keep
+		 * interrupting so fast that it prevents the scheduled
+		 * work to run.
+		 * Also after a PSR error, we don't want to arm PSR
+		 * again so we don't care about unmask the interruption
+		 * or unset irq_aux_error.
+		 */
+		val = intel_de_read(dev_priv, imr_reg);
+		val |= psr_irq_psr_error_bit_get(intel_dp);
+		intel_de_write(dev_priv, imr_reg, val);
+
+		schedule_work(&intel_dp->psr.work);
+	}
+}
+
+static bool intel_dp_get_alpm_status(struct intel_dp *intel_dp)
+{
+	u8 alpm_caps = 0;
+
+	if (drm_dp_dpcd_readb(&intel_dp->aux, DP_RECEIVER_ALPM_CAP,
+			      &alpm_caps) != 1)
+		return false;
+	return alpm_caps & DP_ALPM_CAP;
+}
+
+static u8 intel_dp_get_sink_sync_latency(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	u8 val = 8; /* assume the worst if we can't read the value */
+
+	if (drm_dp_dpcd_readb(&intel_dp->aux,
+			      DP_SYNCHRONIZATION_LATENCY_IN_SINK, &val) == 1)
+		val &= DP_MAX_RESYNC_FRAME_COUNT_MASK;
+	else
+		drm_dbg_kms(&i915->drm,
+			    "Unable to get sink synchronization latency, assuming 8 frames\n");
+	return val;
+}
+
+static void intel_dp_get_su_granularity(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	ssize_t r;
+	u16 w;
+	u8 y;
+
+	/* If sink don't have specific granularity requirements set legacy ones */
+	if (!(intel_dp->psr_dpcd[1] & DP_PSR2_SU_GRANULARITY_REQUIRED)) {
+		/* As PSR2 HW sends full lines, we do not care about x granularity */
+		w = 4;
+		y = 4;
+		goto exit;
+	}
+
+	r = drm_dp_dpcd_read(&intel_dp->aux, DP_PSR2_SU_X_GRANULARITY, &w, 2);
+	if (r != 2)
+		drm_dbg_kms(&i915->drm,
+			    "Unable to read DP_PSR2_SU_X_GRANULARITY\n");
+	/*
+	 * Spec says that if the value read is 0 the default granularity should
+	 * be used instead.
+	 */
+	if (r != 2 || w == 0)
+		w = 4;
+
+	r = drm_dp_dpcd_read(&intel_dp->aux, DP_PSR2_SU_Y_GRANULARITY, &y, 1);
+	if (r != 1) {
+		drm_dbg_kms(&i915->drm,
+			    "Unable to read DP_PSR2_SU_Y_GRANULARITY\n");
+		y = 4;
+	}
+	if (y == 0)
+		y = 1;
+
+exit:
+	intel_dp->psr.su_w_granularity = w;
+	intel_dp->psr.su_y_granularity = y;
+}
+
+void intel_psr_init_dpcd(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv =
+		to_i915(dp_to_dig_port(intel_dp)->base.base.dev);
+
+	drm_dp_dpcd_read(&intel_dp->aux, DP_PSR_SUPPORT, intel_dp->psr_dpcd,
+			 sizeof(intel_dp->psr_dpcd));
+
+	if (!intel_dp->psr_dpcd[0])
+		return;
+	drm_dbg_kms(&dev_priv->drm, "eDP panel supports PSR version %x\n",
+		    intel_dp->psr_dpcd[0]);
+
+	if (drm_dp_has_quirk(&intel_dp->desc, DP_DPCD_QUIRK_NO_PSR)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "PSR support not currently available for this panel\n");
+		return;
+	}
+
+	if (!(intel_dp->edp_dpcd[1] & DP_EDP_SET_POWER_CAP)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Panel lacks power state control, PSR cannot be enabled\n");
+		return;
+	}
+
+	intel_dp->psr.sink_support = true;
+	intel_dp->psr.sink_sync_latency =
+		intel_dp_get_sink_sync_latency(intel_dp);
+
+	if (DISPLAY_VER(dev_priv) >= 9 &&
+	    (intel_dp->psr_dpcd[0] == DP_PSR2_WITH_Y_COORD_IS_SUPPORTED)) {
+		bool y_req = intel_dp->psr_dpcd[1] &
+			     DP_PSR2_SU_Y_COORDINATE_REQUIRED;
+		bool alpm = intel_dp_get_alpm_status(intel_dp);
+
+		/*
+		 * All panels that supports PSR version 03h (PSR2 +
+		 * Y-coordinate) can handle Y-coordinates in VSC but we are
+		 * only sure that it is going to be used when required by the
+		 * panel. This way panel is capable to do selective update
+		 * without a aux frame sync.
+		 *
+		 * To support PSR version 02h and PSR version 03h without
+		 * Y-coordinate requirement panels we would need to enable
+		 * GTC first.
+		 */
+		intel_dp->psr.sink_psr2_support = y_req && alpm;
+		drm_dbg_kms(&dev_priv->drm, "PSR2 %ssupported\n",
+			    intel_dp->psr.sink_psr2_support ? "" : "not ");
+
+		if (intel_dp->psr.sink_psr2_support) {
+			intel_dp->psr.colorimetry_support =
+				intel_dp_get_colorimetry_status(intel_dp);
+			intel_dp_get_su_granularity(intel_dp);
+		}
+	}
+}
+
+static void intel_psr_enable_sink(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	u8 dpcd_val = DP_PSR_ENABLE;
+
+	/* Enable ALPM at sink for psr2 */
+	if (intel_dp->psr.psr2_enabled) {
+		drm_dp_dpcd_writeb(&intel_dp->aux, DP_RECEIVER_ALPM_CONFIG,
+				   DP_ALPM_ENABLE |
+				   DP_ALPM_LOCK_ERROR_IRQ_HPD_ENABLE);
+
+		dpcd_val |= DP_PSR_ENABLE_PSR2 | DP_PSR_IRQ_HPD_WITH_CRC_ERRORS;
+	} else {
+		if (intel_dp->psr.link_standby)
+			dpcd_val |= DP_PSR_MAIN_LINK_ACTIVE;
+
+		if (DISPLAY_VER(dev_priv) >= 8)
+			dpcd_val |= DP_PSR_CRC_VERIFICATION;
+	}
+
+	if (intel_dp->psr.req_psr2_sdp_prior_scanline)
+		dpcd_val |= DP_PSR_SU_REGION_SCANLINE_CAPTURE;
+
+	drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG, dpcd_val);
+
+	drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, DP_SET_POWER_D0);
+}
+
+static u32 intel_psr1_get_tp_time(struct intel_dp *intel_dp)
+{
+	struct intel_connector *connector = intel_dp->attached_connector;
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	u32 val = 0;
+
+	if (DISPLAY_VER(dev_priv) >= 11)
+		val |= EDP_PSR_TP4_TIME_0US;
+
+	if (dev_priv->params.psr_safest_params) {
+		val |= EDP_PSR_TP1_TIME_2500us;
+		val |= EDP_PSR_TP2_TP3_TIME_2500us;
+		goto check_tp3_sel;
+	}
+
+	if (connector->panel.vbt.psr.tp1_wakeup_time_us == 0)
+		val |= EDP_PSR_TP1_TIME_0us;
+	else if (connector->panel.vbt.psr.tp1_wakeup_time_us <= 100)
+		val |= EDP_PSR_TP1_TIME_100us;
+	else if (connector->panel.vbt.psr.tp1_wakeup_time_us <= 500)
+		val |= EDP_PSR_TP1_TIME_500us;
+	else
+		val |= EDP_PSR_TP1_TIME_2500us;
+
+	if (connector->panel.vbt.psr.tp2_tp3_wakeup_time_us == 0)
+		val |= EDP_PSR_TP2_TP3_TIME_0us;
+	else if (connector->panel.vbt.psr.tp2_tp3_wakeup_time_us <= 100)
+		val |= EDP_PSR_TP2_TP3_TIME_100us;
+	else if (connector->panel.vbt.psr.tp2_tp3_wakeup_time_us <= 500)
+		val |= EDP_PSR_TP2_TP3_TIME_500us;
+	else
+		val |= EDP_PSR_TP2_TP3_TIME_2500us;
+
+check_tp3_sel:
+	if (intel_dp_source_supports_tps3(dev_priv) &&
+	    drm_dp_tps3_supported(intel_dp->dpcd))
+		val |= EDP_PSR_TP1_TP3_SEL;
+	else
+		val |= EDP_PSR_TP1_TP2_SEL;
+
+	return val;
+}
+
+static u8 psr_compute_idle_frames(struct intel_dp *intel_dp)
+{
+	struct intel_connector *connector = intel_dp->attached_connector;
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	int idle_frames;
+
+	/* Let's use 6 as the minimum to cover all known cases including the
+	 * off-by-one issue that HW has in some cases.
+	 */
+	idle_frames = max(6, connector->panel.vbt.psr.idle_frames);
+	idle_frames = max(idle_frames, intel_dp->psr.sink_sync_latency + 1);
+
+	if (drm_WARN_ON(&dev_priv->drm, idle_frames > 0xf))
+		idle_frames = 0xf;
+
+	return idle_frames;
+}
+
+static void hsw_activate_psr1(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	u32 max_sleep_time = 0x1f;
+	u32 val = EDP_PSR_ENABLE;
+
+	val |= psr_compute_idle_frames(intel_dp) << EDP_PSR_IDLE_FRAME_SHIFT;
+
+	val |= max_sleep_time << EDP_PSR_MAX_SLEEP_TIME_SHIFT;
+	if (IS_HASWELL(dev_priv))
+		val |= EDP_PSR_MIN_LINK_ENTRY_TIME_8_LINES;
+
+	if (intel_dp->psr.link_standby)
+		val |= EDP_PSR_LINK_STANDBY;
+
+	val |= intel_psr1_get_tp_time(intel_dp);
+
+	if (DISPLAY_VER(dev_priv) >= 8)
+		val |= EDP_PSR_CRC_ENABLE;
+
+	val |= (intel_de_read(dev_priv, EDP_PSR_CTL(intel_dp->psr.transcoder)) &
+		EDP_PSR_RESTORE_PSR_ACTIVE_CTX_MASK);
+	intel_de_write(dev_priv, EDP_PSR_CTL(intel_dp->psr.transcoder), val);
+}
+
+static u32 intel_psr2_get_tp_time(struct intel_dp *intel_dp)
+{
+	struct intel_connector *connector = intel_dp->attached_connector;
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	u32 val = 0;
+
+	if (dev_priv->params.psr_safest_params)
+		return EDP_PSR2_TP2_TIME_2500us;
+
+	if (connector->panel.vbt.psr.psr2_tp2_tp3_wakeup_time_us >= 0 &&
+	    connector->panel.vbt.psr.psr2_tp2_tp3_wakeup_time_us <= 50)
+		val |= EDP_PSR2_TP2_TIME_50us;
+	else if (connector->panel.vbt.psr.psr2_tp2_tp3_wakeup_time_us <= 100)
+		val |= EDP_PSR2_TP2_TIME_100us;
+	else if (connector->panel.vbt.psr.psr2_tp2_tp3_wakeup_time_us <= 500)
+		val |= EDP_PSR2_TP2_TIME_500us;
+	else
+		val |= EDP_PSR2_TP2_TIME_2500us;
+
+	return val;
+}
+
+static void hsw_activate_psr2(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	u32 val = EDP_PSR2_ENABLE;
+
+	val |= psr_compute_idle_frames(intel_dp) << EDP_PSR2_IDLE_FRAME_SHIFT;
+
+	if (!IS_ALDERLAKE_P(dev_priv))
+		val |= EDP_SU_TRACK_ENABLE;
+
+	if (DISPLAY_VER(dev_priv) >= 10 && DISPLAY_VER(dev_priv) <= 12)
+		val |= EDP_Y_COORDINATE_ENABLE;
+
+	val |= EDP_PSR2_FRAME_BEFORE_SU(max_t(u8, intel_dp->psr.sink_sync_latency + 1, 2));
+	val |= intel_psr2_get_tp_time(intel_dp);
+
+	if (DISPLAY_VER(dev_priv) >= 12) {
+		if (intel_dp->psr.io_wake_lines < 9 &&
+		    intel_dp->psr.fast_wake_lines < 9)
+			val |= TGL_EDP_PSR2_BLOCK_COUNT_NUM_2;
+		else
+			val |= TGL_EDP_PSR2_BLOCK_COUNT_NUM_3;
+	}
+
+	/* Wa_22012278275:adl-p */
+	if (IS_ADLP_DISPLAY_STEP(dev_priv, STEP_A0, STEP_E0)) {
+		static const u8 map[] = {
+			2, /* 5 lines */
+			1, /* 6 lines */
+			0, /* 7 lines */
+			3, /* 8 lines */
+			6, /* 9 lines */
+			5, /* 10 lines */
+			4, /* 11 lines */
+			7, /* 12 lines */
+		};
+		/*
+		 * Still using the default IO_BUFFER_WAKE and FAST_WAKE, see
+		 * comments bellow for more information
+		 */
+		u32 tmp;
+
+		tmp = map[intel_dp->psr.io_wake_lines - TGL_EDP_PSR2_IO_BUFFER_WAKE_MIN_LINES];
+		tmp = tmp << TGL_EDP_PSR2_IO_BUFFER_WAKE_SHIFT;
+		val |= tmp;
+
+		tmp = map[intel_dp->psr.fast_wake_lines - TGL_EDP_PSR2_FAST_WAKE_MIN_LINES];
+		tmp = tmp << TGL_EDP_PSR2_FAST_WAKE_MIN_SHIFT;
+		val |= tmp;
+	} else if (DISPLAY_VER(dev_priv) >= 12) {
+		val |= TGL_EDP_PSR2_IO_BUFFER_WAKE(intel_dp->psr.io_wake_lines);
+		val |= TGL_EDP_PSR2_FAST_WAKE(intel_dp->psr.fast_wake_lines);
+	} else if (DISPLAY_VER(dev_priv) >= 9) {
+		val |= EDP_PSR2_IO_BUFFER_WAKE(intel_dp->psr.io_wake_lines);
+		val |= EDP_PSR2_FAST_WAKE(intel_dp->psr.fast_wake_lines);
+	}
+
+	if (intel_dp->psr.req_psr2_sdp_prior_scanline)
+		val |= EDP_PSR2_SU_SDP_SCANLINE;
+
+	if (intel_dp->psr.psr2_sel_fetch_enabled) {
+		u32 tmp;
+
+		/* Wa_1408330847 */
+		if (IS_TGL_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0))
+			intel_de_rmw(dev_priv, CHICKEN_PAR1_1,
+				     DIS_RAM_BYPASS_PSR2_MAN_TRACK,
+				     DIS_RAM_BYPASS_PSR2_MAN_TRACK);
+
+		tmp = intel_de_read(dev_priv, PSR2_MAN_TRK_CTL(intel_dp->psr.transcoder));
+		drm_WARN_ON(&dev_priv->drm, !(tmp & PSR2_MAN_TRK_CTL_ENABLE));
+	} else if (HAS_PSR2_SEL_FETCH(dev_priv)) {
+		intel_de_write(dev_priv,
+			       PSR2_MAN_TRK_CTL(intel_dp->psr.transcoder), 0);
+	}
+
+	/*
+	 * PSR2 HW is incorrectly using EDP_PSR_TP1_TP3_SEL and BSpec is
+	 * recommending keep this bit unset while PSR2 is enabled.
+	 */
+	intel_de_write(dev_priv, EDP_PSR_CTL(intel_dp->psr.transcoder), 0);
+
+	intel_de_write(dev_priv, EDP_PSR2_CTL(intel_dp->psr.transcoder), val);
+}
+
+static bool
+transcoder_has_psr2(struct drm_i915_private *dev_priv, enum transcoder trans)
+{
+	if (IS_ALDERLAKE_P(dev_priv))
+		return trans == TRANSCODER_A || trans == TRANSCODER_B;
+	else if (DISPLAY_VER(dev_priv) >= 12)
+		return trans == TRANSCODER_A;
+	else
+		return trans == TRANSCODER_EDP;
+}
+
+static u32 intel_get_frame_time_us(const struct intel_crtc_state *cstate)
+{
+	if (!cstate || !cstate->hw.active)
+		return 0;
+
+	return DIV_ROUND_UP(1000 * 1000,
+			    drm_mode_vrefresh(&cstate->hw.adjusted_mode));
+}
+
+static void psr2_program_idle_frames(struct intel_dp *intel_dp,
+				     u32 idle_frames)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	u32 val;
+
+	idle_frames <<=  EDP_PSR2_IDLE_FRAME_SHIFT;
+	val = intel_de_read(dev_priv, EDP_PSR2_CTL(intel_dp->psr.transcoder));
+	val &= ~EDP_PSR2_IDLE_FRAME_MASK;
+	val |= idle_frames;
+	intel_de_write(dev_priv, EDP_PSR2_CTL(intel_dp->psr.transcoder), val);
+}
+
+static void tgl_psr2_enable_dc3co(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+	psr2_program_idle_frames(intel_dp, 0);
+	intel_display_power_set_target_dc_state(dev_priv, DC_STATE_EN_DC3CO);
+}
+
+static void tgl_psr2_disable_dc3co(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+	intel_display_power_set_target_dc_state(dev_priv, DC_STATE_EN_UPTO_DC6);
+	psr2_program_idle_frames(intel_dp, psr_compute_idle_frames(intel_dp));
+}
+
+static void tgl_dc3co_disable_work(struct work_struct *work)
+{
+	struct intel_dp *intel_dp =
+		container_of(work, typeof(*intel_dp), psr.dc3co_work.work);
+
+	mutex_lock(&intel_dp->psr.lock);
+	/* If delayed work is pending, it is not idle */
+	if (delayed_work_pending(&intel_dp->psr.dc3co_work))
+		goto unlock;
+
+	tgl_psr2_disable_dc3co(intel_dp);
+unlock:
+	mutex_unlock(&intel_dp->psr.lock);
+}
+
+static void tgl_disallow_dc3co_on_psr2_exit(struct intel_dp *intel_dp)
+{
+	if (!intel_dp->psr.dc3co_exitline)
+		return;
+
+	cancel_delayed_work(&intel_dp->psr.dc3co_work);
+	/* Before PSR2 exit disallow dc3co*/
+	tgl_psr2_disable_dc3co(intel_dp);
+}
+
+static bool
+dc3co_is_pipe_port_compatible(struct intel_dp *intel_dp,
+			      struct intel_crtc_state *crtc_state)
+{
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	enum pipe pipe = to_intel_crtc(crtc_state->uapi.crtc)->pipe;
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	enum port port = dig_port->base.port;
+
+	if (IS_ALDERLAKE_P(dev_priv))
+		return pipe <= PIPE_B && port <= PORT_B;
+	else
+		return pipe == PIPE_A && port == PORT_A;
+}
+
+static void
+tgl_dc3co_exitline_compute_config(struct intel_dp *intel_dp,
+				  struct intel_crtc_state *crtc_state)
+{
+	const u32 crtc_vdisplay = crtc_state->uapi.adjusted_mode.crtc_vdisplay;
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	u32 exit_scanlines;
+
+	/*
+	 * FIXME: Due to the changed sequence of activating/deactivating DC3CO,
+	 * disable DC3CO until the changed dc3co activating/deactivating sequence
+	 * is applied. B.Specs:49196
+	 */
+	return;
+
+	/*
+	 * DMC's DC3CO exit mechanism has an issue with Selective Fecth
+	 * TODO: when the issue is addressed, this restriction should be removed.
+	 */
+	if (crtc_state->enable_psr2_sel_fetch)
+		return;
+
+	if (!(dev_priv->display.dmc.allowed_dc_mask & DC_STATE_EN_DC3CO))
+		return;
+
+	if (!dc3co_is_pipe_port_compatible(intel_dp, crtc_state))
+		return;
+
+	/* Wa_16011303918:adl-p */
+	if (IS_ADLP_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0))
+		return;
+
+	/*
+	 * DC3CO Exit time 200us B.Spec 49196
+	 * PSR2 transcoder Early Exit scanlines = ROUNDUP(200 / line time) + 1
+	 */
+	exit_scanlines =
+		intel_usecs_to_scanlines(&crtc_state->uapi.adjusted_mode, 200) + 1;
+
+	if (drm_WARN_ON(&dev_priv->drm, exit_scanlines > crtc_vdisplay))
+		return;
+
+	crtc_state->dc3co_exitline = crtc_vdisplay - exit_scanlines;
+}
+
+static bool intel_psr2_sel_fetch_config_valid(struct intel_dp *intel_dp,
+					      struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+	if (!dev_priv->params.enable_psr2_sel_fetch &&
+	    intel_dp->psr.debug != I915_PSR_DEBUG_ENABLE_SEL_FETCH) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "PSR2 sel fetch not enabled, disabled by parameter\n");
+		return false;
+	}
+
+	if (crtc_state->uapi.async_flip) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "PSR2 sel fetch not enabled, async flip enabled\n");
+		return false;
+	}
+
+	/* Wa_14010254185 Wa_14010103792 */
+	if (IS_TGL_DISPLAY_STEP(dev_priv, STEP_A0, STEP_C0)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "PSR2 sel fetch not enabled, missing the implementation of WAs\n");
+		return false;
+	}
+
+	return crtc_state->enable_psr2_sel_fetch = true;
+}
+
+static bool psr2_granularity_check(struct intel_dp *intel_dp,
+				   struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	const int crtc_hdisplay = crtc_state->hw.adjusted_mode.crtc_hdisplay;
+	const int crtc_vdisplay = crtc_state->hw.adjusted_mode.crtc_vdisplay;
+	u16 y_granularity = 0;
+
+	/* PSR2 HW only send full lines so we only need to validate the width */
+	if (crtc_hdisplay % intel_dp->psr.su_w_granularity)
+		return false;
+
+	if (crtc_vdisplay % intel_dp->psr.su_y_granularity)
+		return false;
+
+	/* HW tracking is only aligned to 4 lines */
+	if (!crtc_state->enable_psr2_sel_fetch)
+		return intel_dp->psr.su_y_granularity == 4;
+
+	/*
+	 * adl_p has 1 line granularity. For other platforms with SW tracking we
+	 * can adjust the y coordinates to match sink requirement if multiple of
+	 * 4.
+	 */
+	if (IS_ALDERLAKE_P(dev_priv))
+		y_granularity = intel_dp->psr.su_y_granularity;
+	else if (intel_dp->psr.su_y_granularity <= 2)
+		y_granularity = 4;
+	else if ((intel_dp->psr.su_y_granularity % 4) == 0)
+		y_granularity = intel_dp->psr.su_y_granularity;
+
+	if (y_granularity == 0 || crtc_vdisplay % y_granularity)
+		return false;
+
+	crtc_state->su_y_granularity = y_granularity;
+	return true;
+}
+
+static bool _compute_psr2_sdp_prior_scanline_indication(struct intel_dp *intel_dp,
+							struct intel_crtc_state *crtc_state)
+{
+	const struct drm_display_mode *adjusted_mode = &crtc_state->uapi.adjusted_mode;
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	u32 hblank_total, hblank_ns, req_ns;
+
+	hblank_total = adjusted_mode->crtc_hblank_end - adjusted_mode->crtc_hblank_start;
+	hblank_ns = div_u64(1000000ULL * hblank_total, adjusted_mode->crtc_clock);
+
+	/* From spec: ((60 / number of lanes) + 11) * 1000 / symbol clock frequency MHz */
+	req_ns = ((60 / crtc_state->lane_count) + 11) * 1000 / (crtc_state->port_clock / 1000);
+
+	if ((hblank_ns - req_ns) > 100)
+		return true;
+
+	/* Not supported <13 / Wa_22012279113:adl-p */
+	if (DISPLAY_VER(dev_priv) <= 13 || intel_dp->edp_dpcd[0] < DP_EDP_14b)
+		return false;
+
+	crtc_state->req_psr2_sdp_prior_scanline = true;
+	return true;
+}
+
+static bool _compute_psr2_wake_times(struct intel_dp *intel_dp,
+				     struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	int io_wake_lines, io_wake_time, fast_wake_lines, fast_wake_time;
+	u8 max_wake_lines;
+
+	if (DISPLAY_VER(i915) >= 12) {
+		io_wake_time = 42;
+		/*
+		 * According to Bspec it's 42us, but based on testing
+		 * it is not enough -> use 45 us.
+		 */
+		fast_wake_time = 45;
+		max_wake_lines = 12;
+	} else {
+		io_wake_time = 50;
+		fast_wake_time = 32;
+		max_wake_lines = 8;
+	}
+
+	io_wake_lines = intel_usecs_to_scanlines(
+		&crtc_state->hw.adjusted_mode, io_wake_time);
+	fast_wake_lines = intel_usecs_to_scanlines(
+		&crtc_state->hw.adjusted_mode, fast_wake_time);
+
+	if (io_wake_lines > max_wake_lines ||
+	    fast_wake_lines > max_wake_lines)
+		return false;
+
+	if (i915->params.psr_safest_params)
+		io_wake_lines = fast_wake_lines = max_wake_lines;
+
+	/* According to Bspec lower limit should be set as 7 lines. */
+	intel_dp->psr.io_wake_lines = max(io_wake_lines, 7);
+	intel_dp->psr.fast_wake_lines = max(fast_wake_lines, 7);
+
+	return true;
+}
+
+static bool intel_psr2_config_valid(struct intel_dp *intel_dp,
+				    struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	int crtc_hdisplay = crtc_state->hw.adjusted_mode.crtc_hdisplay;
+	int crtc_vdisplay = crtc_state->hw.adjusted_mode.crtc_vdisplay;
+	int psr_max_h = 0, psr_max_v = 0, max_bpp = 0;
+
+	if (!intel_dp->psr.sink_psr2_support)
+		return false;
+
+	/* JSL and EHL only supports eDP 1.3 */
+	if (IS_JSL_EHL(dev_priv)) {
+		drm_dbg_kms(&dev_priv->drm, "PSR2 not supported by phy\n");
+		return false;
+	}
+
+	/* Wa_16011181250 */
+	if (IS_ROCKETLAKE(dev_priv) || IS_ALDERLAKE_S(dev_priv) ||
+	    IS_DG2(dev_priv)) {
+		drm_dbg_kms(&dev_priv->drm, "PSR2 is defeatured for this platform\n");
+		return false;
+	}
+
+	if (IS_ADLP_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0)) {
+		drm_dbg_kms(&dev_priv->drm, "PSR2 not completely functional in this stepping\n");
+		return false;
+	}
+
+	if (!transcoder_has_psr2(dev_priv, crtc_state->cpu_transcoder)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "PSR2 not supported in transcoder %s\n",
+			    transcoder_name(crtc_state->cpu_transcoder));
+		return false;
+	}
+
+	if (!psr2_global_enabled(intel_dp)) {
+		drm_dbg_kms(&dev_priv->drm, "PSR2 disabled by flag\n");
+		return false;
+	}
+
+	/*
+	 * DSC and PSR2 cannot be enabled simultaneously. If a requested
+	 * resolution requires DSC to be enabled, priority is given to DSC
+	 * over PSR2.
+	 */
+	if (crtc_state->dsc.compression_enable) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "PSR2 cannot be enabled since DSC is enabled\n");
+		return false;
+	}
+
+	if (crtc_state->crc_enabled) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "PSR2 not enabled because it would inhibit pipe CRC calculation\n");
+		return false;
+	}
+
+	if (DISPLAY_VER(dev_priv) >= 12) {
+		psr_max_h = 5120;
+		psr_max_v = 3200;
+		max_bpp = 30;
+	} else if (DISPLAY_VER(dev_priv) >= 10) {
+		psr_max_h = 4096;
+		psr_max_v = 2304;
+		max_bpp = 24;
+	} else if (DISPLAY_VER(dev_priv) == 9) {
+		psr_max_h = 3640;
+		psr_max_v = 2304;
+		max_bpp = 24;
+	}
+
+	if (crtc_state->pipe_bpp > max_bpp) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "PSR2 not enabled, pipe bpp %d > max supported %d\n",
+			    crtc_state->pipe_bpp, max_bpp);
+		return false;
+	}
+
+	/* Wa_16011303918:adl-p */
+	if (crtc_state->vrr.enable &&
+	    IS_ADLP_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "PSR2 not enabled, not compatible with HW stepping + VRR\n");
+		return false;
+	}
+
+	if (!_compute_psr2_sdp_prior_scanline_indication(intel_dp, crtc_state)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "PSR2 not enabled, PSR2 SDP indication do not fit in hblank\n");
+		return false;
+	}
+
+	if (!_compute_psr2_wake_times(intel_dp, crtc_state)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "PSR2 not enabled, Unable to use long enough wake times\n");
+		return false;
+	}
+
+	if (HAS_PSR2_SEL_FETCH(dev_priv)) {
+		if (!intel_psr2_sel_fetch_config_valid(intel_dp, crtc_state) &&
+		    !HAS_PSR_HW_TRACKING(dev_priv)) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "PSR2 not enabled, selective fetch not valid and no HW tracking available\n");
+			return false;
+		}
+	}
+
+	/* Wa_2209313811 */
+	if (!crtc_state->enable_psr2_sel_fetch &&
+	    IS_TGL_DISPLAY_STEP(dev_priv, STEP_A0, STEP_C0)) {
+		drm_dbg_kms(&dev_priv->drm, "PSR2 HW tracking is not supported this Display stepping\n");
+		goto unsupported;
+	}
+
+	if (!psr2_granularity_check(intel_dp, crtc_state)) {
+		drm_dbg_kms(&dev_priv->drm, "PSR2 not enabled, SU granularity not compatible\n");
+		goto unsupported;
+	}
+
+	if (!crtc_state->enable_psr2_sel_fetch &&
+	    (crtc_hdisplay > psr_max_h || crtc_vdisplay > psr_max_v)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "PSR2 not enabled, resolution %dx%d > max supported %dx%d\n",
+			    crtc_hdisplay, crtc_vdisplay,
+			    psr_max_h, psr_max_v);
+		goto unsupported;
+	}
+
+	tgl_dc3co_exitline_compute_config(intel_dp, crtc_state);
+	return true;
+
+unsupported:
+	crtc_state->enable_psr2_sel_fetch = false;
+	return false;
+}
+
+void intel_psr_compute_config(struct intel_dp *intel_dp,
+			      struct intel_crtc_state *crtc_state,
+			      struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	const struct drm_display_mode *adjusted_mode =
+		&crtc_state->hw.adjusted_mode;
+	int psr_setup_time;
+
+	/*
+	 * Current PSR panels don't work reliably with VRR enabled
+	 * So if VRR is enabled, do not enable PSR.
+	 */
+	if (crtc_state->vrr.enable)
+		return;
+
+	if (!CAN_PSR(intel_dp))
+		return;
+
+	if (!psr_global_enabled(intel_dp)) {
+		drm_dbg_kms(&dev_priv->drm, "PSR disabled by flag\n");
+		return;
+	}
+
+	if (intel_dp->psr.sink_not_reliable) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "PSR sink implementation is not reliable\n");
+		return;
+	}
+
+	if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "PSR condition failed: Interlaced mode enabled\n");
+		return;
+	}
+
+	psr_setup_time = drm_dp_psr_setup_time(intel_dp->psr_dpcd);
+	if (psr_setup_time < 0) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "PSR condition failed: Invalid PSR setup time (0x%02x)\n",
+			    intel_dp->psr_dpcd[1]);
+		return;
+	}
+
+	if (intel_usecs_to_scanlines(adjusted_mode, psr_setup_time) >
+	    adjusted_mode->crtc_vtotal - adjusted_mode->crtc_vdisplay - 1) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "PSR condition failed: PSR setup time (%d us) too long\n",
+			    psr_setup_time);
+		return;
+	}
+
+	crtc_state->has_psr = true;
+	crtc_state->has_psr2 = intel_psr2_config_valid(intel_dp, crtc_state);
+
+	crtc_state->infoframes.enable |= intel_hdmi_infoframe_enable(DP_SDP_VSC);
+	intel_dp_compute_psr_vsc_sdp(intel_dp, crtc_state, conn_state,
+				     &crtc_state->psr_vsc);
+}
+
+void intel_psr_get_config(struct intel_encoder *encoder,
+			  struct intel_crtc_state *pipe_config)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	struct intel_dp *intel_dp;
+	u32 val;
+
+	if (!dig_port)
+		return;
+
+	intel_dp = &dig_port->dp;
+	if (!CAN_PSR(intel_dp))
+		return;
+
+	mutex_lock(&intel_dp->psr.lock);
+	if (!intel_dp->psr.enabled)
+		goto unlock;
+
+	/*
+	 * Not possible to read EDP_PSR/PSR2_CTL registers as it is
+	 * enabled/disabled because of frontbuffer tracking and others.
+	 */
+	pipe_config->has_psr = true;
+	pipe_config->has_psr2 = intel_dp->psr.psr2_enabled;
+	pipe_config->infoframes.enable |= intel_hdmi_infoframe_enable(DP_SDP_VSC);
+
+	if (!intel_dp->psr.psr2_enabled)
+		goto unlock;
+
+	if (HAS_PSR2_SEL_FETCH(dev_priv)) {
+		val = intel_de_read(dev_priv, PSR2_MAN_TRK_CTL(intel_dp->psr.transcoder));
+		if (val & PSR2_MAN_TRK_CTL_ENABLE)
+			pipe_config->enable_psr2_sel_fetch = true;
+	}
+
+	if (DISPLAY_VER(dev_priv) >= 12) {
+		val = intel_de_read(dev_priv, EXITLINE(intel_dp->psr.transcoder));
+		val &= EXITLINE_MASK;
+		pipe_config->dc3co_exitline = val;
+	}
+unlock:
+	mutex_unlock(&intel_dp->psr.lock);
+}
+
+static void intel_psr_activate(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	enum transcoder transcoder = intel_dp->psr.transcoder;
+
+	if (transcoder_has_psr2(dev_priv, transcoder))
+		drm_WARN_ON(&dev_priv->drm,
+			    intel_de_read(dev_priv, EDP_PSR2_CTL(transcoder)) & EDP_PSR2_ENABLE);
+
+	drm_WARN_ON(&dev_priv->drm,
+		    intel_de_read(dev_priv, EDP_PSR_CTL(transcoder)) & EDP_PSR_ENABLE);
+	drm_WARN_ON(&dev_priv->drm, intel_dp->psr.active);
+	lockdep_assert_held(&intel_dp->psr.lock);
+
+	/* psr1 and psr2 are mutually exclusive.*/
+	if (intel_dp->psr.psr2_enabled)
+		hsw_activate_psr2(intel_dp);
+	else
+		hsw_activate_psr1(intel_dp);
+
+	intel_dp->psr.active = true;
+}
+
+static u32 wa_16013835468_bit_get(struct intel_dp *intel_dp)
+{
+	switch (intel_dp->psr.pipe) {
+	case PIPE_A:
+		return LATENCY_REPORTING_REMOVED_PIPE_A;
+	case PIPE_B:
+		return LATENCY_REPORTING_REMOVED_PIPE_B;
+	case PIPE_C:
+		return LATENCY_REPORTING_REMOVED_PIPE_C;
+	default:
+		MISSING_CASE(intel_dp->psr.pipe);
+		return 0;
+	}
+}
+
+static void intel_psr_enable_source(struct intel_dp *intel_dp,
+				    const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	enum transcoder cpu_transcoder = intel_dp->psr.transcoder;
+	u32 mask;
+
+	/*
+	 * Per Spec: Avoid continuous PSR exit by masking MEMUP and HPD also
+	 * mask LPSP to avoid dependency on other drivers that might block
+	 * runtime_pm besides preventing  other hw tracking issues now we
+	 * can rely on frontbuffer tracking.
+	 */
+	mask = EDP_PSR_DEBUG_MASK_MEMUP |
+	       EDP_PSR_DEBUG_MASK_HPD |
+	       EDP_PSR_DEBUG_MASK_LPSP |
+	       EDP_PSR_DEBUG_MASK_MAX_SLEEP;
+
+	if (DISPLAY_VER(dev_priv) < 11)
+		mask |= EDP_PSR_DEBUG_MASK_DISP_REG_WRITE;
+
+	intel_de_write(dev_priv, EDP_PSR_DEBUG(intel_dp->psr.transcoder),
+		       mask);
+
+	psr_irq_control(intel_dp);
+
+	if (intel_dp->psr.dc3co_exitline) {
+		u32 val;
+
+		/*
+		 * TODO: if future platforms supports DC3CO in more than one
+		 * transcoder, EXITLINE will need to be unset when disabling PSR
+		 */
+		val = intel_de_read(dev_priv, EXITLINE(cpu_transcoder));
+		val &= ~EXITLINE_MASK;
+		val |= intel_dp->psr.dc3co_exitline << EXITLINE_SHIFT;
+		val |= EXITLINE_ENABLE;
+		intel_de_write(dev_priv, EXITLINE(cpu_transcoder), val);
+	}
+
+	if (HAS_PSR_HW_TRACKING(dev_priv) && HAS_PSR2_SEL_FETCH(dev_priv))
+		intel_de_rmw(dev_priv, CHICKEN_PAR1_1, IGNORE_PSR2_HW_TRACKING,
+			     intel_dp->psr.psr2_sel_fetch_enabled ?
+			     IGNORE_PSR2_HW_TRACKING : 0);
+
+	if (intel_dp->psr.psr2_enabled) {
+		if (DISPLAY_VER(dev_priv) == 9)
+			intel_de_rmw(dev_priv, CHICKEN_TRANS(cpu_transcoder), 0,
+				     PSR2_VSC_ENABLE_PROG_HEADER |
+				     PSR2_ADD_VERTICAL_LINE_COUNT);
+
+		/*
+		 * Wa_16014451276:adlp
+		 * All supported adlp panels have 1-based X granularity, this may
+		 * cause issues if non-supported panels are used.
+		 */
+		if (IS_ALDERLAKE_P(dev_priv))
+			intel_de_rmw(dev_priv, CHICKEN_TRANS(cpu_transcoder), 0,
+				     ADLP_1_BASED_X_GRANULARITY);
+
+		/* Wa_16011168373:adl-p */
+		if (IS_ADLP_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0))
+			intel_de_rmw(dev_priv,
+				     TRANS_SET_CONTEXT_LATENCY(intel_dp->psr.transcoder),
+				     TRANS_SET_CONTEXT_LATENCY_MASK,
+				     TRANS_SET_CONTEXT_LATENCY_VALUE(1));
+
+		/* Wa_16012604467:adlp */
+		if (IS_ALDERLAKE_P(dev_priv))
+			intel_de_rmw(dev_priv, CLKGATE_DIS_MISC, 0,
+				     CLKGATE_DIS_MISC_DMASC_GATING_DIS);
+
+		/* Wa_16013835468:tgl[b0+], dg1 */
+		if (IS_TGL_DISPLAY_STEP(dev_priv, STEP_B0, STEP_FOREVER) ||
+		    IS_DG1(dev_priv)) {
+			u16 vtotal, vblank;
+
+			vtotal = crtc_state->uapi.adjusted_mode.crtc_vtotal -
+				 crtc_state->uapi.adjusted_mode.crtc_vdisplay;
+			vblank = crtc_state->uapi.adjusted_mode.crtc_vblank_end -
+				 crtc_state->uapi.adjusted_mode.crtc_vblank_start;
+			if (vblank > vtotal)
+				intel_de_rmw(dev_priv, GEN8_CHICKEN_DCPR_1, 0,
+					     wa_16013835468_bit_get(intel_dp));
+		}
+	}
+}
+
+static bool psr_interrupt_error_check(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	u32 val;
+
+	/*
+	 * If a PSR error happened and the driver is reloaded, the EDP_PSR_IIR
+	 * will still keep the error set even after the reset done in the
+	 * irq_preinstall and irq_uninstall hooks.
+	 * And enabling in this situation cause the screen to freeze in the
+	 * first time that PSR HW tries to activate so lets keep PSR disabled
+	 * to avoid any rendering problems.
+	 */
+	if (DISPLAY_VER(dev_priv) >= 12)
+		val = intel_de_read(dev_priv,
+				    TRANS_PSR_IIR(intel_dp->psr.transcoder));
+	else
+		val = intel_de_read(dev_priv, EDP_PSR_IIR);
+	val &= psr_irq_psr_error_bit_get(intel_dp);
+	if (val) {
+		intel_dp->psr.sink_not_reliable = true;
+		drm_dbg_kms(&dev_priv->drm,
+			    "PSR interruption error set, not enabling PSR\n");
+		return false;
+	}
+
+	return true;
+}
+
+static void intel_psr_enable_locked(struct intel_dp *intel_dp,
+				    const struct intel_crtc_state *crtc_state)
+{
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	enum phy phy = intel_port_to_phy(dev_priv, dig_port->base.port);
+	struct intel_encoder *encoder = &dig_port->base;
+	u32 val;
+
+	drm_WARN_ON(&dev_priv->drm, intel_dp->psr.enabled);
+
+	intel_dp->psr.psr2_enabled = crtc_state->has_psr2;
+	intel_dp->psr.busy_frontbuffer_bits = 0;
+	intel_dp->psr.pipe = to_intel_crtc(crtc_state->uapi.crtc)->pipe;
+	intel_dp->psr.transcoder = crtc_state->cpu_transcoder;
+	/* DC5/DC6 requires at least 6 idle frames */
+	val = usecs_to_jiffies(intel_get_frame_time_us(crtc_state) * 6);
+	intel_dp->psr.dc3co_exit_delay = val;
+	intel_dp->psr.dc3co_exitline = crtc_state->dc3co_exitline;
+	intel_dp->psr.psr2_sel_fetch_enabled = crtc_state->enable_psr2_sel_fetch;
+	intel_dp->psr.psr2_sel_fetch_cff_enabled = false;
+	intel_dp->psr.req_psr2_sdp_prior_scanline =
+		crtc_state->req_psr2_sdp_prior_scanline;
+
+	if (!psr_interrupt_error_check(intel_dp))
+		return;
+
+	drm_dbg_kms(&dev_priv->drm, "Enabling PSR%s\n",
+		    intel_dp->psr.psr2_enabled ? "2" : "1");
+	intel_write_dp_vsc_sdp(encoder, crtc_state, &crtc_state->psr_vsc);
+	intel_snps_phy_update_psr_power_state(dev_priv, phy, true);
+	intel_psr_enable_sink(intel_dp);
+	intel_psr_enable_source(intel_dp, crtc_state);
+	intel_dp->psr.enabled = true;
+	intel_dp->psr.paused = false;
+
+	intel_psr_activate(intel_dp);
+}
+
+static void intel_psr_exit(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	u32 val;
+
+	if (!intel_dp->psr.active) {
+		if (transcoder_has_psr2(dev_priv, intel_dp->psr.transcoder)) {
+			val = intel_de_read(dev_priv,
+					    EDP_PSR2_CTL(intel_dp->psr.transcoder));
+			drm_WARN_ON(&dev_priv->drm, val & EDP_PSR2_ENABLE);
+		}
+
+		val = intel_de_read(dev_priv,
+				    EDP_PSR_CTL(intel_dp->psr.transcoder));
+		drm_WARN_ON(&dev_priv->drm, val & EDP_PSR_ENABLE);
+
+		return;
+	}
+
+	if (intel_dp->psr.psr2_enabled) {
+		tgl_disallow_dc3co_on_psr2_exit(intel_dp);
+		val = intel_de_read(dev_priv,
+				    EDP_PSR2_CTL(intel_dp->psr.transcoder));
+		drm_WARN_ON(&dev_priv->drm, !(val & EDP_PSR2_ENABLE));
+		val &= ~EDP_PSR2_ENABLE;
+		intel_de_write(dev_priv,
+			       EDP_PSR2_CTL(intel_dp->psr.transcoder), val);
+	} else {
+		val = intel_de_read(dev_priv,
+				    EDP_PSR_CTL(intel_dp->psr.transcoder));
+		drm_WARN_ON(&dev_priv->drm, !(val & EDP_PSR_ENABLE));
+		val &= ~EDP_PSR_ENABLE;
+		intel_de_write(dev_priv,
+			       EDP_PSR_CTL(intel_dp->psr.transcoder), val);
+	}
+	intel_dp->psr.active = false;
+}
+
+static void intel_psr_wait_exit_locked(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	i915_reg_t psr_status;
+	u32 psr_status_mask;
+
+	if (intel_dp->psr.psr2_enabled) {
+		psr_status = EDP_PSR2_STATUS(intel_dp->psr.transcoder);
+		psr_status_mask = EDP_PSR2_STATUS_STATE_MASK;
+	} else {
+		psr_status = EDP_PSR_STATUS(intel_dp->psr.transcoder);
+		psr_status_mask = EDP_PSR_STATUS_STATE_MASK;
+	}
+
+	/* Wait till PSR is idle */
+	if (intel_de_wait_for_clear(dev_priv, psr_status,
+				    psr_status_mask, 2000))
+		drm_err(&dev_priv->drm, "Timed out waiting PSR idle state\n");
+}
+
+static void intel_psr_disable_locked(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	enum phy phy = intel_port_to_phy(dev_priv,
+					 dp_to_dig_port(intel_dp)->base.port);
+
+	lockdep_assert_held(&intel_dp->psr.lock);
+
+	if (!intel_dp->psr.enabled)
+		return;
+
+	drm_dbg_kms(&dev_priv->drm, "Disabling PSR%s\n",
+		    intel_dp->psr.psr2_enabled ? "2" : "1");
+
+	intel_psr_exit(intel_dp);
+	intel_psr_wait_exit_locked(intel_dp);
+
+	/* Wa_1408330847 */
+	if (intel_dp->psr.psr2_sel_fetch_enabled &&
+	    IS_TGL_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0))
+		intel_de_rmw(dev_priv, CHICKEN_PAR1_1,
+			     DIS_RAM_BYPASS_PSR2_MAN_TRACK, 0);
+
+	if (intel_dp->psr.psr2_enabled) {
+		/* Wa_16011168373:adl-p */
+		if (IS_ADLP_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0))
+			intel_de_rmw(dev_priv,
+				     TRANS_SET_CONTEXT_LATENCY(intel_dp->psr.transcoder),
+				     TRANS_SET_CONTEXT_LATENCY_MASK, 0);
+
+		/* Wa_16012604467:adlp */
+		if (IS_ALDERLAKE_P(dev_priv))
+			intel_de_rmw(dev_priv, CLKGATE_DIS_MISC,
+				     CLKGATE_DIS_MISC_DMASC_GATING_DIS, 0);
+
+		/* Wa_16013835468:tgl[b0+], dg1 */
+		if (IS_TGL_DISPLAY_STEP(dev_priv, STEP_B0, STEP_FOREVER) ||
+		    IS_DG1(dev_priv))
+			intel_de_rmw(dev_priv, GEN8_CHICKEN_DCPR_1,
+				     wa_16013835468_bit_get(intel_dp), 0);
+	}
+
+	intel_snps_phy_update_psr_power_state(dev_priv, phy, false);
+
+	/* Disable PSR on Sink */
+	drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG, 0);
+
+	if (intel_dp->psr.psr2_enabled)
+		drm_dp_dpcd_writeb(&intel_dp->aux, DP_RECEIVER_ALPM_CONFIG, 0);
+
+	intel_dp->psr.enabled = false;
+	intel_dp->psr.psr2_enabled = false;
+	intel_dp->psr.psr2_sel_fetch_enabled = false;
+	intel_dp->psr.psr2_sel_fetch_cff_enabled = false;
+}
+
+/**
+ * intel_psr_disable - Disable PSR
+ * @intel_dp: Intel DP
+ * @old_crtc_state: old CRTC state
+ *
+ * This function needs to be called before disabling pipe.
+ */
+void intel_psr_disable(struct intel_dp *intel_dp,
+		       const struct intel_crtc_state *old_crtc_state)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+	if (!old_crtc_state->has_psr)
+		return;
+
+	if (drm_WARN_ON(&dev_priv->drm, !CAN_PSR(intel_dp)))
+		return;
+
+	mutex_lock(&intel_dp->psr.lock);
+
+	intel_psr_disable_locked(intel_dp);
+
+	mutex_unlock(&intel_dp->psr.lock);
+	cancel_work_sync(&intel_dp->psr.work);
+	cancel_delayed_work_sync(&intel_dp->psr.dc3co_work);
+}
+
+/**
+ * intel_psr_pause - Pause PSR
+ * @intel_dp: Intel DP
+ *
+ * This function need to be called after enabling psr.
+ */
+void intel_psr_pause(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_psr *psr = &intel_dp->psr;
+
+	if (!CAN_PSR(intel_dp))
+		return;
+
+	mutex_lock(&psr->lock);
+
+	if (!psr->enabled) {
+		mutex_unlock(&psr->lock);
+		return;
+	}
+
+	/* If we ever hit this, we will need to add refcount to pause/resume */
+	drm_WARN_ON(&dev_priv->drm, psr->paused);
+
+	intel_psr_exit(intel_dp);
+	intel_psr_wait_exit_locked(intel_dp);
+	psr->paused = true;
+
+	mutex_unlock(&psr->lock);
+
+	cancel_work_sync(&psr->work);
+	cancel_delayed_work_sync(&psr->dc3co_work);
+}
+
+/**
+ * intel_psr_resume - Resume PSR
+ * @intel_dp: Intel DP
+ *
+ * This function need to be called after pausing psr.
+ */
+void intel_psr_resume(struct intel_dp *intel_dp)
+{
+	struct intel_psr *psr = &intel_dp->psr;
+
+	if (!CAN_PSR(intel_dp))
+		return;
+
+	mutex_lock(&psr->lock);
+
+	if (!psr->paused)
+		goto unlock;
+
+	psr->paused = false;
+	intel_psr_activate(intel_dp);
+
+unlock:
+	mutex_unlock(&psr->lock);
+}
+
+static u32 man_trk_ctl_enable_bit_get(struct drm_i915_private *dev_priv)
+{
+	return IS_ALDERLAKE_P(dev_priv) ? 0 : PSR2_MAN_TRK_CTL_ENABLE;
+}
+
+static u32 man_trk_ctl_single_full_frame_bit_get(struct drm_i915_private *dev_priv)
+{
+	return IS_ALDERLAKE_P(dev_priv) ?
+	       ADLP_PSR2_MAN_TRK_CTL_SF_SINGLE_FULL_FRAME :
+	       PSR2_MAN_TRK_CTL_SF_SINGLE_FULL_FRAME;
+}
+
+static u32 man_trk_ctl_partial_frame_bit_get(struct drm_i915_private *dev_priv)
+{
+	return IS_ALDERLAKE_P(dev_priv) ?
+	       ADLP_PSR2_MAN_TRK_CTL_SF_PARTIAL_FRAME_UPDATE :
+	       PSR2_MAN_TRK_CTL_SF_PARTIAL_FRAME_UPDATE;
+}
+
+static u32 man_trk_ctl_continuos_full_frame(struct drm_i915_private *dev_priv)
+{
+	return IS_ALDERLAKE_P(dev_priv) ?
+	       ADLP_PSR2_MAN_TRK_CTL_SF_CONTINUOS_FULL_FRAME :
+	       PSR2_MAN_TRK_CTL_SF_CONTINUOS_FULL_FRAME;
+}
+
+static void psr_force_hw_tracking_exit(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+	if (intel_dp->psr.psr2_sel_fetch_enabled)
+		intel_de_write(dev_priv,
+			       PSR2_MAN_TRK_CTL(intel_dp->psr.transcoder),
+			       man_trk_ctl_enable_bit_get(dev_priv) |
+			       man_trk_ctl_partial_frame_bit_get(dev_priv) |
+			       man_trk_ctl_single_full_frame_bit_get(dev_priv));
+
+	/*
+	 * Display WA #0884: skl+
+	 * This documented WA for bxt can be safely applied
+	 * broadly so we can force HW tracking to exit PSR
+	 * instead of disabling and re-enabling.
+	 * Workaround tells us to write 0 to CUR_SURFLIVE_A,
+	 * but it makes more sense write to the current active
+	 * pipe.
+	 *
+	 * This workaround do not exist for platforms with display 10 or newer
+	 * but testing proved that it works for up display 13, for newer
+	 * than that testing will be needed.
+	 */
+	intel_de_write(dev_priv, CURSURFLIVE(intel_dp->psr.pipe), 0);
+}
+
+void intel_psr2_disable_plane_sel_fetch(struct intel_plane *plane,
+					const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum pipe pipe = plane->pipe;
+
+	if (!crtc_state->enable_psr2_sel_fetch)
+		return;
+
+	intel_de_write_fw(dev_priv, PLANE_SEL_FETCH_CTL(pipe, plane->id), 0);
+}
+
+void intel_psr2_program_plane_sel_fetch(struct intel_plane *plane,
+					const struct intel_crtc_state *crtc_state,
+					const struct intel_plane_state *plane_state,
+					int color_plane)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum pipe pipe = plane->pipe;
+	const struct drm_rect *clip;
+	u32 val;
+	int x, y;
+
+	if (!crtc_state->enable_psr2_sel_fetch)
+		return;
+
+	if (plane->id == PLANE_CURSOR) {
+		intel_de_write_fw(dev_priv, PLANE_SEL_FETCH_CTL(pipe, plane->id),
+				  plane_state->ctl);
+		return;
+	}
+
+	clip = &plane_state->psr2_sel_fetch_area;
+
+	val = (clip->y1 + plane_state->uapi.dst.y1) << 16;
+	val |= plane_state->uapi.dst.x1;
+	intel_de_write_fw(dev_priv, PLANE_SEL_FETCH_POS(pipe, plane->id), val);
+
+	x = plane_state->view.color_plane[color_plane].x;
+
+	/*
+	 * From Bspec: UV surface Start Y Position = half of Y plane Y
+	 * start position.
+	 */
+	if (!color_plane)
+		y = plane_state->view.color_plane[color_plane].y + clip->y1;
+	else
+		y = plane_state->view.color_plane[color_plane].y + clip->y1 / 2;
+
+	val = y << 16 | x;
+
+	intel_de_write_fw(dev_priv, PLANE_SEL_FETCH_OFFSET(pipe, plane->id),
+			  val);
+
+	/* Sizes are 0 based */
+	val = (drm_rect_height(clip) - 1) << 16;
+	val |= (drm_rect_width(&plane_state->uapi.src) >> 16) - 1;
+	intel_de_write_fw(dev_priv, PLANE_SEL_FETCH_SIZE(pipe, plane->id), val);
+
+	intel_de_write_fw(dev_priv, PLANE_SEL_FETCH_CTL(pipe, plane->id),
+			  PLANE_SEL_FETCH_CTL_ENABLE);
+}
+
+void intel_psr2_program_trans_man_trk_ctl(const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+	struct intel_encoder *encoder;
+
+	if (!crtc_state->enable_psr2_sel_fetch)
+		return;
+
+	for_each_intel_encoder_mask_with_psr(&dev_priv->drm, encoder,
+					     crtc_state->uapi.encoder_mask) {
+		struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+
+		lockdep_assert_held(&intel_dp->psr.lock);
+		if (intel_dp->psr.psr2_sel_fetch_cff_enabled)
+			return;
+		break;
+	}
+
+	intel_de_write(dev_priv, PSR2_MAN_TRK_CTL(crtc_state->cpu_transcoder),
+		       crtc_state->psr2_man_track_ctl);
+}
+
+static void psr2_man_trk_ctl_calc(struct intel_crtc_state *crtc_state,
+				  struct drm_rect *clip, bool full_update)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	u32 val = man_trk_ctl_enable_bit_get(dev_priv);
+
+	/* SF partial frame enable has to be set even on full update */
+	val |= man_trk_ctl_partial_frame_bit_get(dev_priv);
+
+	if (full_update) {
+		/*
+		 * Not applying Wa_14014971508:adlp as we do not support the
+		 * feature that requires this workaround.
+		 */
+		val |= man_trk_ctl_single_full_frame_bit_get(dev_priv);
+		goto exit;
+	}
+
+	if (clip->y1 == -1)
+		goto exit;
+
+	if (IS_ALDERLAKE_P(dev_priv)) {
+		val |= ADLP_PSR2_MAN_TRK_CTL_SU_REGION_START_ADDR(clip->y1);
+		val |= ADLP_PSR2_MAN_TRK_CTL_SU_REGION_END_ADDR(clip->y2 - 1);
+	} else {
+		drm_WARN_ON(crtc_state->uapi.crtc->dev, clip->y1 % 4 || clip->y2 % 4);
+
+		val |= PSR2_MAN_TRK_CTL_SU_REGION_START_ADDR(clip->y1 / 4 + 1);
+		val |= PSR2_MAN_TRK_CTL_SU_REGION_END_ADDR(clip->y2 / 4 + 1);
+	}
+exit:
+	crtc_state->psr2_man_track_ctl = val;
+}
+
+static void clip_area_update(struct drm_rect *overlap_damage_area,
+			     struct drm_rect *damage_area,
+			     struct drm_rect *pipe_src)
+{
+	if (!drm_rect_intersect(damage_area, pipe_src))
+		return;
+
+	if (overlap_damage_area->y1 == -1) {
+		overlap_damage_area->y1 = damage_area->y1;
+		overlap_damage_area->y2 = damage_area->y2;
+		return;
+	}
+
+	if (damage_area->y1 < overlap_damage_area->y1)
+		overlap_damage_area->y1 = damage_area->y1;
+
+	if (damage_area->y2 > overlap_damage_area->y2)
+		overlap_damage_area->y2 = damage_area->y2;
+}
+
+static void intel_psr2_sel_fetch_pipe_alignment(const struct intel_crtc_state *crtc_state,
+						struct drm_rect *pipe_clip)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+	const u16 y_alignment = crtc_state->su_y_granularity;
+
+	pipe_clip->y1 -= pipe_clip->y1 % y_alignment;
+	if (pipe_clip->y2 % y_alignment)
+		pipe_clip->y2 = ((pipe_clip->y2 / y_alignment) + 1) * y_alignment;
+
+	if (IS_ALDERLAKE_P(dev_priv) && crtc_state->dsc.compression_enable)
+		drm_warn(&dev_priv->drm, "Missing PSR2 sel fetch alignment with DSC\n");
+}
+
+/*
+ * TODO: Not clear how to handle planes with negative position,
+ * also planes are not updated if they have a negative X
+ * position so for now doing a full update in this cases
+ *
+ * Plane scaling and rotation is not supported by selective fetch and both
+ * properties can change without a modeset, so need to be check at every
+ * atomic commit.
+ */
+static bool psr2_sel_fetch_plane_state_supported(const struct intel_plane_state *plane_state)
+{
+	if (plane_state->uapi.dst.y1 < 0 ||
+	    plane_state->uapi.dst.x1 < 0 ||
+	    plane_state->scaler_id >= 0 ||
+	    plane_state->uapi.rotation != DRM_MODE_ROTATE_0)
+		return false;
+
+	return true;
+}
+
+/*
+ * Check for pipe properties that is not supported by selective fetch.
+ *
+ * TODO: pipe scaling causes a modeset but skl_update_scaler_crtc() is executed
+ * after intel_psr_compute_config(), so for now keeping PSR2 selective fetch
+ * enabled and going to the full update path.
+ */
+static bool psr2_sel_fetch_pipe_state_supported(const struct intel_crtc_state *crtc_state)
+{
+	if (crtc_state->scaler_state.scaler_id >= 0)
+		return false;
+
+	return true;
+}
+
+int intel_psr2_sel_fetch_update(struct intel_atomic_state *state,
+				struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct intel_crtc_state *crtc_state = intel_atomic_get_new_crtc_state(state, crtc);
+	struct drm_rect pipe_clip = { .x1 = 0, .y1 = -1, .x2 = INT_MAX, .y2 = -1 };
+	struct intel_plane_state *new_plane_state, *old_plane_state;
+	struct intel_plane *plane;
+	bool full_update = false;
+	int i, ret;
+
+	if (!crtc_state->enable_psr2_sel_fetch)
+		return 0;
+
+	if (!psr2_sel_fetch_pipe_state_supported(crtc_state)) {
+		full_update = true;
+		goto skip_sel_fetch_set_loop;
+	}
+
+	/*
+	 * Calculate minimal selective fetch area of each plane and calculate
+	 * the pipe damaged area.
+	 * In the next loop the plane selective fetch area will actually be set
+	 * using whole pipe damaged area.
+	 */
+	for_each_oldnew_intel_plane_in_state(state, plane, old_plane_state,
+					     new_plane_state, i) {
+		struct drm_rect src, damaged_area = { .x1 = 0, .y1 = -1,
+						      .x2 = INT_MAX };
+
+		if (new_plane_state->uapi.crtc != crtc_state->uapi.crtc)
+			continue;
+
+		if (!new_plane_state->uapi.visible &&
+		    !old_plane_state->uapi.visible)
+			continue;
+
+		if (!psr2_sel_fetch_plane_state_supported(new_plane_state)) {
+			full_update = true;
+			break;
+		}
+
+		/*
+		 * If visibility or plane moved, mark the whole plane area as
+		 * damaged as it needs to be complete redraw in the new and old
+		 * position.
+		 */
+		if (new_plane_state->uapi.visible != old_plane_state->uapi.visible ||
+		    !drm_rect_equals(&new_plane_state->uapi.dst,
+				     &old_plane_state->uapi.dst)) {
+			if (old_plane_state->uapi.visible) {
+				damaged_area.y1 = old_plane_state->uapi.dst.y1;
+				damaged_area.y2 = old_plane_state->uapi.dst.y2;
+				clip_area_update(&pipe_clip, &damaged_area,
+						 &crtc_state->pipe_src);
+			}
+
+			if (new_plane_state->uapi.visible) {
+				damaged_area.y1 = new_plane_state->uapi.dst.y1;
+				damaged_area.y2 = new_plane_state->uapi.dst.y2;
+				clip_area_update(&pipe_clip, &damaged_area,
+						 &crtc_state->pipe_src);
+			}
+			continue;
+		} else if (new_plane_state->uapi.alpha != old_plane_state->uapi.alpha) {
+			/* If alpha changed mark the whole plane area as damaged */
+			damaged_area.y1 = new_plane_state->uapi.dst.y1;
+			damaged_area.y2 = new_plane_state->uapi.dst.y2;
+			clip_area_update(&pipe_clip, &damaged_area,
+					 &crtc_state->pipe_src);
+			continue;
+		}
+
+		src = drm_plane_state_src(&new_plane_state->uapi);
+		drm_rect_fp_to_int(&src, &src);
+
+		if (!drm_atomic_helper_damage_merged(&old_plane_state->uapi,
+						     &new_plane_state->uapi, &damaged_area))
+			continue;
+
+		damaged_area.y1 += new_plane_state->uapi.dst.y1 - src.y1;
+		damaged_area.y2 += new_plane_state->uapi.dst.y1 - src.y1;
+		damaged_area.x1 += new_plane_state->uapi.dst.x1 - src.x1;
+		damaged_area.x2 += new_plane_state->uapi.dst.x1 - src.x1;
+
+		clip_area_update(&pipe_clip, &damaged_area, &crtc_state->pipe_src);
+	}
+
+	/*
+	 * TODO: For now we are just using full update in case
+	 * selective fetch area calculation fails. To optimize this we
+	 * should identify cases where this happens and fix the area
+	 * calculation for those.
+	 */
+	if (pipe_clip.y1 == -1) {
+		drm_info_once(&dev_priv->drm,
+			      "Selective fetch area calculation failed in pipe %c\n",
+			      pipe_name(crtc->pipe));
+		full_update = true;
+	}
+
+	if (full_update)
+		goto skip_sel_fetch_set_loop;
+
+	ret = drm_atomic_add_affected_planes(&state->base, &crtc->base);
+	if (ret)
+		return ret;
+
+	intel_psr2_sel_fetch_pipe_alignment(crtc_state, &pipe_clip);
+
+	/*
+	 * Now that we have the pipe damaged area check if it intersect with
+	 * every plane, if it does set the plane selective fetch area.
+	 */
+	for_each_oldnew_intel_plane_in_state(state, plane, old_plane_state,
+					     new_plane_state, i) {
+		struct drm_rect *sel_fetch_area, inter;
+		struct intel_plane *linked = new_plane_state->planar_linked_plane;
+
+		if (new_plane_state->uapi.crtc != crtc_state->uapi.crtc ||
+		    !new_plane_state->uapi.visible)
+			continue;
+
+		inter = pipe_clip;
+		if (!drm_rect_intersect(&inter, &new_plane_state->uapi.dst))
+			continue;
+
+		if (!psr2_sel_fetch_plane_state_supported(new_plane_state)) {
+			full_update = true;
+			break;
+		}
+
+		sel_fetch_area = &new_plane_state->psr2_sel_fetch_area;
+		sel_fetch_area->y1 = inter.y1 - new_plane_state->uapi.dst.y1;
+		sel_fetch_area->y2 = inter.y2 - new_plane_state->uapi.dst.y1;
+		crtc_state->update_planes |= BIT(plane->id);
+
+		/*
+		 * Sel_fetch_area is calculated for UV plane. Use
+		 * same area for Y plane as well.
+		 */
+		if (linked) {
+			struct intel_plane_state *linked_new_plane_state;
+			struct drm_rect *linked_sel_fetch_area;
+
+			linked_new_plane_state = intel_atomic_get_plane_state(state, linked);
+			if (IS_ERR(linked_new_plane_state))
+				return PTR_ERR(linked_new_plane_state);
+
+			linked_sel_fetch_area = &linked_new_plane_state->psr2_sel_fetch_area;
+			linked_sel_fetch_area->y1 = sel_fetch_area->y1;
+			linked_sel_fetch_area->y2 = sel_fetch_area->y2;
+			crtc_state->update_planes |= BIT(linked->id);
+		}
+	}
+
+skip_sel_fetch_set_loop:
+	psr2_man_trk_ctl_calc(crtc_state, &pipe_clip, full_update);
+	return 0;
+}
+
+void intel_psr_pre_plane_update(struct intel_atomic_state *state,
+				struct intel_crtc *crtc)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_crtc_state *old_crtc_state =
+		intel_atomic_get_old_crtc_state(state, crtc);
+	const struct intel_crtc_state *new_crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	struct intel_encoder *encoder;
+
+	if (!HAS_PSR(i915))
+		return;
+
+	for_each_intel_encoder_mask_with_psr(state->base.dev, encoder,
+					     old_crtc_state->uapi.encoder_mask) {
+		struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+		struct intel_psr *psr = &intel_dp->psr;
+		bool needs_to_disable = false;
+
+		mutex_lock(&psr->lock);
+
+		/*
+		 * Reasons to disable:
+		 * - PSR disabled in new state
+		 * - All planes will go inactive
+		 * - Changing between PSR versions
+		 */
+		needs_to_disable |= intel_crtc_needs_modeset(new_crtc_state);
+		needs_to_disable |= !new_crtc_state->has_psr;
+		needs_to_disable |= !new_crtc_state->active_planes;
+		needs_to_disable |= new_crtc_state->has_psr2 != psr->psr2_enabled;
+
+		if (psr->enabled && needs_to_disable)
+			intel_psr_disable_locked(intel_dp);
+
+		mutex_unlock(&psr->lock);
+	}
+}
+
+static void _intel_psr_post_plane_update(const struct intel_atomic_state *state,
+					 const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct intel_encoder *encoder;
+
+	if (!crtc_state->has_psr)
+		return;
+
+	for_each_intel_encoder_mask_with_psr(state->base.dev, encoder,
+					     crtc_state->uapi.encoder_mask) {
+		struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+		struct intel_psr *psr = &intel_dp->psr;
+
+		mutex_lock(&psr->lock);
+
+		if (psr->sink_not_reliable)
+			goto exit;
+
+		drm_WARN_ON(&dev_priv->drm, psr->enabled && !crtc_state->active_planes);
+
+		/* Only enable if there is active planes */
+		if (!psr->enabled && crtc_state->active_planes)
+			intel_psr_enable_locked(intel_dp, crtc_state);
+
+		/* Force a PSR exit when enabling CRC to avoid CRC timeouts */
+		if (crtc_state->crc_enabled && psr->enabled)
+			psr_force_hw_tracking_exit(intel_dp);
+
+exit:
+		mutex_unlock(&psr->lock);
+	}
+}
+
+void intel_psr_post_plane_update(const struct intel_atomic_state *state)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct intel_crtc_state *crtc_state;
+	struct intel_crtc *crtc;
+	int i;
+
+	if (!HAS_PSR(dev_priv))
+		return;
+
+	for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i)
+		_intel_psr_post_plane_update(state, crtc_state);
+}
+
+static int _psr2_ready_for_pipe_update_locked(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+	/*
+	 * Any state lower than EDP_PSR2_STATUS_STATE_DEEP_SLEEP is enough.
+	 * As all higher states has bit 4 of PSR2 state set we can just wait for
+	 * EDP_PSR2_STATUS_STATE_DEEP_SLEEP to be cleared.
+	 */
+	return intel_de_wait_for_clear(dev_priv,
+				       EDP_PSR2_STATUS(intel_dp->psr.transcoder),
+				       EDP_PSR2_STATUS_STATE_DEEP_SLEEP, 50);
+}
+
+static int _psr1_ready_for_pipe_update_locked(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+	/*
+	 * From bspec: Panel Self Refresh (BDW+)
+	 * Max. time for PSR to idle = Inverse of the refresh rate + 6 ms of
+	 * exit training time + 1.5 ms of aux channel handshake. 50 ms is
+	 * defensive enough to cover everything.
+	 */
+	return intel_de_wait_for_clear(dev_priv,
+				       EDP_PSR_STATUS(intel_dp->psr.transcoder),
+				       EDP_PSR_STATUS_STATE_MASK, 50);
+}
+
+/**
+ * intel_psr_wait_for_idle_locked - wait for PSR be ready for a pipe update
+ * @new_crtc_state: new CRTC state
+ *
+ * This function is expected to be called from pipe_update_start() where it is
+ * not expected to race with PSR enable or disable.
+ */
+void intel_psr_wait_for_idle_locked(const struct intel_crtc_state *new_crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(new_crtc_state->uapi.crtc->dev);
+	struct intel_encoder *encoder;
+
+	if (!new_crtc_state->has_psr)
+		return;
+
+	for_each_intel_encoder_mask_with_psr(&dev_priv->drm, encoder,
+					     new_crtc_state->uapi.encoder_mask) {
+		struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+		int ret;
+
+		lockdep_assert_held(&intel_dp->psr.lock);
+
+		if (!intel_dp->psr.enabled)
+			continue;
+
+		if (intel_dp->psr.psr2_enabled)
+			ret = _psr2_ready_for_pipe_update_locked(intel_dp);
+		else
+			ret = _psr1_ready_for_pipe_update_locked(intel_dp);
+
+		if (ret)
+			drm_err(&dev_priv->drm, "PSR wait timed out, atomic update may fail\n");
+	}
+}
+
+static bool __psr_wait_for_idle_locked(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	i915_reg_t reg;
+	u32 mask;
+	int err;
+
+	if (!intel_dp->psr.enabled)
+		return false;
+
+	if (intel_dp->psr.psr2_enabled) {
+		reg = EDP_PSR2_STATUS(intel_dp->psr.transcoder);
+		mask = EDP_PSR2_STATUS_STATE_MASK;
+	} else {
+		reg = EDP_PSR_STATUS(intel_dp->psr.transcoder);
+		mask = EDP_PSR_STATUS_STATE_MASK;
+	}
+
+	mutex_unlock(&intel_dp->psr.lock);
+
+	err = intel_de_wait_for_clear(dev_priv, reg, mask, 50);
+	if (err)
+		drm_err(&dev_priv->drm,
+			"Timed out waiting for PSR Idle for re-enable\n");
+
+	/* After the unlocked wait, verify that PSR is still wanted! */
+	mutex_lock(&intel_dp->psr.lock);
+	return err == 0 && intel_dp->psr.enabled;
+}
+
+static int intel_psr_fastset_force(struct drm_i915_private *dev_priv)
+{
+	struct drm_connector_list_iter conn_iter;
+	struct drm_device *dev = &dev_priv->drm;
+	struct drm_modeset_acquire_ctx ctx;
+	struct drm_atomic_state *state;
+	struct drm_connector *conn;
+	int err = 0;
+
+	state = drm_atomic_state_alloc(dev);
+	if (!state)
+		return -ENOMEM;
+
+	drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
+	state->acquire_ctx = &ctx;
+
+retry:
+
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	drm_for_each_connector_iter(conn, &conn_iter) {
+		struct drm_connector_state *conn_state;
+		struct drm_crtc_state *crtc_state;
+
+		if (conn->connector_type != DRM_MODE_CONNECTOR_eDP)
+			continue;
+
+		conn_state = drm_atomic_get_connector_state(state, conn);
+		if (IS_ERR(conn_state)) {
+			err = PTR_ERR(conn_state);
+			break;
+		}
+
+		if (!conn_state->crtc)
+			continue;
+
+		crtc_state = drm_atomic_get_crtc_state(state, conn_state->crtc);
+		if (IS_ERR(crtc_state)) {
+			err = PTR_ERR(crtc_state);
+			break;
+		}
+
+		/* Mark mode as changed to trigger a pipe->update() */
+		crtc_state->mode_changed = true;
+	}
+	drm_connector_list_iter_end(&conn_iter);
+
+	if (err == 0)
+		err = drm_atomic_commit(state);
+
+	if (err == -EDEADLK) {
+		drm_atomic_state_clear(state);
+		err = drm_modeset_backoff(&ctx);
+		if (!err)
+			goto retry;
+	}
+
+	drm_modeset_drop_locks(&ctx);
+	drm_modeset_acquire_fini(&ctx);
+	drm_atomic_state_put(state);
+
+	return err;
+}
+
+int intel_psr_debug_set(struct intel_dp *intel_dp, u64 val)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	const u32 mode = val & I915_PSR_DEBUG_MODE_MASK;
+	u32 old_mode;
+	int ret;
+
+	if (val & ~(I915_PSR_DEBUG_IRQ | I915_PSR_DEBUG_MODE_MASK) ||
+	    mode > I915_PSR_DEBUG_ENABLE_SEL_FETCH) {
+		drm_dbg_kms(&dev_priv->drm, "Invalid debug mask %llx\n", val);
+		return -EINVAL;
+	}
+
+	ret = mutex_lock_interruptible(&intel_dp->psr.lock);
+	if (ret)
+		return ret;
+
+	old_mode = intel_dp->psr.debug & I915_PSR_DEBUG_MODE_MASK;
+	intel_dp->psr.debug = val;
+
+	/*
+	 * Do it right away if it's already enabled, otherwise it will be done
+	 * when enabling the source.
+	 */
+	if (intel_dp->psr.enabled)
+		psr_irq_control(intel_dp);
+
+	mutex_unlock(&intel_dp->psr.lock);
+
+	if (old_mode != mode)
+		ret = intel_psr_fastset_force(dev_priv);
+
+	return ret;
+}
+
+static void intel_psr_handle_irq(struct intel_dp *intel_dp)
+{
+	struct intel_psr *psr = &intel_dp->psr;
+
+	intel_psr_disable_locked(intel_dp);
+	psr->sink_not_reliable = true;
+	/* let's make sure that sink is awaken */
+	drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, DP_SET_POWER_D0);
+}
+
+static void intel_psr_work(struct work_struct *work)
+{
+	struct intel_dp *intel_dp =
+		container_of(work, typeof(*intel_dp), psr.work);
+
+	mutex_lock(&intel_dp->psr.lock);
+
+	if (!intel_dp->psr.enabled)
+		goto unlock;
+
+	if (READ_ONCE(intel_dp->psr.irq_aux_error))
+		intel_psr_handle_irq(intel_dp);
+
+	/*
+	 * We have to make sure PSR is ready for re-enable
+	 * otherwise it keeps disabled until next full enable/disable cycle.
+	 * PSR might take some time to get fully disabled
+	 * and be ready for re-enable.
+	 */
+	if (!__psr_wait_for_idle_locked(intel_dp))
+		goto unlock;
+
+	/*
+	 * The delayed work can race with an invalidate hence we need to
+	 * recheck. Since psr_flush first clears this and then reschedules we
+	 * won't ever miss a flush when bailing out here.
+	 */
+	if (intel_dp->psr.busy_frontbuffer_bits || intel_dp->psr.active)
+		goto unlock;
+
+	intel_psr_activate(intel_dp);
+unlock:
+	mutex_unlock(&intel_dp->psr.lock);
+}
+
+static void _psr_invalidate_handle(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+	if (intel_dp->psr.psr2_sel_fetch_enabled) {
+		u32 val;
+
+		if (intel_dp->psr.psr2_sel_fetch_cff_enabled) {
+			/* Send one update otherwise lag is observed in screen */
+			intel_de_write(dev_priv, CURSURFLIVE(intel_dp->psr.pipe), 0);
+			return;
+		}
+
+		val = man_trk_ctl_enable_bit_get(dev_priv) |
+		      man_trk_ctl_partial_frame_bit_get(dev_priv) |
+		      man_trk_ctl_continuos_full_frame(dev_priv);
+		intel_de_write(dev_priv, PSR2_MAN_TRK_CTL(intel_dp->psr.transcoder), val);
+		intel_de_write(dev_priv, CURSURFLIVE(intel_dp->psr.pipe), 0);
+		intel_dp->psr.psr2_sel_fetch_cff_enabled = true;
+	} else {
+		intel_psr_exit(intel_dp);
+	}
+}
+
+/**
+ * intel_psr_invalidate - Invalidate PSR
+ * @dev_priv: i915 device
+ * @frontbuffer_bits: frontbuffer plane tracking bits
+ * @origin: which operation caused the invalidate
+ *
+ * Since the hardware frontbuffer tracking has gaps we need to integrate
+ * with the software frontbuffer tracking. This function gets called every
+ * time frontbuffer rendering starts and a buffer gets dirtied. PSR must be
+ * disabled if the frontbuffer mask contains a buffer relevant to PSR.
+ *
+ * Dirty frontbuffers relevant to PSR are tracked in busy_frontbuffer_bits."
+ */
+void intel_psr_invalidate(struct drm_i915_private *dev_priv,
+			  unsigned frontbuffer_bits, enum fb_op_origin origin)
+{
+	struct intel_encoder *encoder;
+
+	if (origin == ORIGIN_FLIP)
+		return;
+
+	for_each_intel_encoder_with_psr(&dev_priv->drm, encoder) {
+		unsigned int pipe_frontbuffer_bits = frontbuffer_bits;
+		struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+
+		mutex_lock(&intel_dp->psr.lock);
+		if (!intel_dp->psr.enabled) {
+			mutex_unlock(&intel_dp->psr.lock);
+			continue;
+		}
+
+		pipe_frontbuffer_bits &=
+			INTEL_FRONTBUFFER_ALL_MASK(intel_dp->psr.pipe);
+		intel_dp->psr.busy_frontbuffer_bits |= pipe_frontbuffer_bits;
+
+		if (pipe_frontbuffer_bits)
+			_psr_invalidate_handle(intel_dp);
+
+		mutex_unlock(&intel_dp->psr.lock);
+	}
+}
+/*
+ * When we will be completely rely on PSR2 S/W tracking in future,
+ * intel_psr_flush() will invalidate and flush the PSR for ORIGIN_FLIP
+ * event also therefore tgl_dc3co_flush_locked() require to be changed
+ * accordingly in future.
+ */
+static void
+tgl_dc3co_flush_locked(struct intel_dp *intel_dp, unsigned int frontbuffer_bits,
+		       enum fb_op_origin origin)
+{
+	if (!intel_dp->psr.dc3co_exitline || !intel_dp->psr.psr2_enabled ||
+	    !intel_dp->psr.active)
+		return;
+
+	/*
+	 * At every frontbuffer flush flip event modified delay of delayed work,
+	 * when delayed work schedules that means display has been idle.
+	 */
+	if (!(frontbuffer_bits &
+	    INTEL_FRONTBUFFER_ALL_MASK(intel_dp->psr.pipe)))
+		return;
+
+	tgl_psr2_enable_dc3co(intel_dp);
+	mod_delayed_work(system_wq, &intel_dp->psr.dc3co_work,
+			 intel_dp->psr.dc3co_exit_delay);
+}
+
+static void _psr_flush_handle(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+	if (intel_dp->psr.psr2_sel_fetch_enabled) {
+		if (intel_dp->psr.psr2_sel_fetch_cff_enabled) {
+			/* can we turn CFF off? */
+			if (intel_dp->psr.busy_frontbuffer_bits == 0) {
+				u32 val = man_trk_ctl_enable_bit_get(dev_priv) |
+					  man_trk_ctl_partial_frame_bit_get(dev_priv) |
+					  man_trk_ctl_single_full_frame_bit_get(dev_priv);
+
+				/*
+				 * turn continuous full frame off and do a single
+				 * full frame
+				 */
+				intel_de_write(dev_priv, PSR2_MAN_TRK_CTL(intel_dp->psr.transcoder),
+					       val);
+				intel_de_write(dev_priv, CURSURFLIVE(intel_dp->psr.pipe), 0);
+				intel_dp->psr.psr2_sel_fetch_cff_enabled = false;
+			}
+		} else {
+			/*
+			 * continuous full frame is disabled, only a single full
+			 * frame is required
+			 */
+			psr_force_hw_tracking_exit(intel_dp);
+		}
+	} else {
+		psr_force_hw_tracking_exit(intel_dp);
+
+		if (!intel_dp->psr.active && !intel_dp->psr.busy_frontbuffer_bits)
+			schedule_work(&intel_dp->psr.work);
+	}
+}
+
+/**
+ * intel_psr_flush - Flush PSR
+ * @dev_priv: i915 device
+ * @frontbuffer_bits: frontbuffer plane tracking bits
+ * @origin: which operation caused the flush
+ *
+ * Since the hardware frontbuffer tracking has gaps we need to integrate
+ * with the software frontbuffer tracking. This function gets called every
+ * time frontbuffer rendering has completed and flushed out to memory. PSR
+ * can be enabled again if no other frontbuffer relevant to PSR is dirty.
+ *
+ * Dirty frontbuffers relevant to PSR are tracked in busy_frontbuffer_bits.
+ */
+void intel_psr_flush(struct drm_i915_private *dev_priv,
+		     unsigned frontbuffer_bits, enum fb_op_origin origin)
+{
+	struct intel_encoder *encoder;
+
+	for_each_intel_encoder_with_psr(&dev_priv->drm, encoder) {
+		unsigned int pipe_frontbuffer_bits = frontbuffer_bits;
+		struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+
+		mutex_lock(&intel_dp->psr.lock);
+		if (!intel_dp->psr.enabled) {
+			mutex_unlock(&intel_dp->psr.lock);
+			continue;
+		}
+
+		pipe_frontbuffer_bits &=
+			INTEL_FRONTBUFFER_ALL_MASK(intel_dp->psr.pipe);
+		intel_dp->psr.busy_frontbuffer_bits &= ~pipe_frontbuffer_bits;
+
+		/*
+		 * If the PSR is paused by an explicit intel_psr_paused() call,
+		 * we have to ensure that the PSR is not activated until
+		 * intel_psr_resume() is called.
+		 */
+		if (intel_dp->psr.paused)
+			goto unlock;
+
+		if (origin == ORIGIN_FLIP ||
+		    (origin == ORIGIN_CURSOR_UPDATE &&
+		     !intel_dp->psr.psr2_sel_fetch_enabled)) {
+			tgl_dc3co_flush_locked(intel_dp, frontbuffer_bits, origin);
+			goto unlock;
+		}
+
+		if (pipe_frontbuffer_bits == 0)
+			goto unlock;
+
+		/* By definition flush = invalidate + flush */
+		_psr_flush_handle(intel_dp);
+unlock:
+		mutex_unlock(&intel_dp->psr.lock);
+	}
+}
+
+/**
+ * intel_psr_init - Init basic PSR work and mutex.
+ * @intel_dp: Intel DP
+ *
+ * This function is called after the initializing connector.
+ * (the initializing of connector treats the handling of connector capabilities)
+ * And it initializes basic PSR stuff for each DP Encoder.
+ */
+void intel_psr_init(struct intel_dp *intel_dp)
+{
+	struct intel_connector *connector = intel_dp->attached_connector;
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+	if (!HAS_PSR(dev_priv))
+		return;
+
+	/*
+	 * HSW spec explicitly says PSR is tied to port A.
+	 * BDW+ platforms have a instance of PSR registers per transcoder but
+	 * BDW, GEN9 and GEN11 are not validated by HW team in other transcoder
+	 * than eDP one.
+	 * For now it only supports one instance of PSR for BDW, GEN9 and GEN11.
+	 * So lets keep it hardcoded to PORT_A for BDW, GEN9 and GEN11.
+	 * But GEN12 supports a instance of PSR registers per transcoder.
+	 */
+	if (DISPLAY_VER(dev_priv) < 12 && dig_port->base.port != PORT_A) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "PSR condition failed: Port not supported\n");
+		return;
+	}
+
+	intel_dp->psr.source_support = true;
+
+	/* Set link_standby x link_off defaults */
+	if (DISPLAY_VER(dev_priv) < 12)
+		/* For new platforms up to TGL let's respect VBT back again */
+		intel_dp->psr.link_standby = connector->panel.vbt.psr.full_link;
+
+	INIT_WORK(&intel_dp->psr.work, intel_psr_work);
+	INIT_DELAYED_WORK(&intel_dp->psr.dc3co_work, tgl_dc3co_disable_work);
+	mutex_init(&intel_dp->psr.lock);
+}
+
+static int psr_get_status_and_error_status(struct intel_dp *intel_dp,
+					   u8 *status, u8 *error_status)
+{
+	struct drm_dp_aux *aux = &intel_dp->aux;
+	int ret;
+
+	ret = drm_dp_dpcd_readb(aux, DP_PSR_STATUS, status);
+	if (ret != 1)
+		return ret;
+
+	ret = drm_dp_dpcd_readb(aux, DP_PSR_ERROR_STATUS, error_status);
+	if (ret != 1)
+		return ret;
+
+	*status = *status & DP_PSR_SINK_STATE_MASK;
+
+	return 0;
+}
+
+static void psr_alpm_check(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct drm_dp_aux *aux = &intel_dp->aux;
+	struct intel_psr *psr = &intel_dp->psr;
+	u8 val;
+	int r;
+
+	if (!psr->psr2_enabled)
+		return;
+
+	r = drm_dp_dpcd_readb(aux, DP_RECEIVER_ALPM_STATUS, &val);
+	if (r != 1) {
+		drm_err(&dev_priv->drm, "Error reading ALPM status\n");
+		return;
+	}
+
+	if (val & DP_ALPM_LOCK_TIMEOUT_ERROR) {
+		intel_psr_disable_locked(intel_dp);
+		psr->sink_not_reliable = true;
+		drm_dbg_kms(&dev_priv->drm,
+			    "ALPM lock timeout error, disabling PSR\n");
+
+		/* Clearing error */
+		drm_dp_dpcd_writeb(aux, DP_RECEIVER_ALPM_STATUS, val);
+	}
+}
+
+static void psr_capability_changed_check(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_psr *psr = &intel_dp->psr;
+	u8 val;
+	int r;
+
+	r = drm_dp_dpcd_readb(&intel_dp->aux, DP_PSR_ESI, &val);
+	if (r != 1) {
+		drm_err(&dev_priv->drm, "Error reading DP_PSR_ESI\n");
+		return;
+	}
+
+	if (val & DP_PSR_CAPS_CHANGE) {
+		intel_psr_disable_locked(intel_dp);
+		psr->sink_not_reliable = true;
+		drm_dbg_kms(&dev_priv->drm,
+			    "Sink PSR capability changed, disabling PSR\n");
+
+		/* Clearing it */
+		drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_ESI, val);
+	}
+}
+
+void intel_psr_short_pulse(struct intel_dp *intel_dp)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_psr *psr = &intel_dp->psr;
+	u8 status, error_status;
+	const u8 errors = DP_PSR_RFB_STORAGE_ERROR |
+			  DP_PSR_VSC_SDP_UNCORRECTABLE_ERROR |
+			  DP_PSR_LINK_CRC_ERROR;
+
+	if (!CAN_PSR(intel_dp))
+		return;
+
+	mutex_lock(&psr->lock);
+
+	if (!psr->enabled)
+		goto exit;
+
+	if (psr_get_status_and_error_status(intel_dp, &status, &error_status)) {
+		drm_err(&dev_priv->drm,
+			"Error reading PSR status or error status\n");
+		goto exit;
+	}
+
+	if (status == DP_PSR_SINK_INTERNAL_ERROR || (error_status & errors)) {
+		intel_psr_disable_locked(intel_dp);
+		psr->sink_not_reliable = true;
+	}
+
+	if (status == DP_PSR_SINK_INTERNAL_ERROR && !error_status)
+		drm_dbg_kms(&dev_priv->drm,
+			    "PSR sink internal error, disabling PSR\n");
+	if (error_status & DP_PSR_RFB_STORAGE_ERROR)
+		drm_dbg_kms(&dev_priv->drm,
+			    "PSR RFB storage error, disabling PSR\n");
+	if (error_status & DP_PSR_VSC_SDP_UNCORRECTABLE_ERROR)
+		drm_dbg_kms(&dev_priv->drm,
+			    "PSR VSC SDP uncorrectable error, disabling PSR\n");
+	if (error_status & DP_PSR_LINK_CRC_ERROR)
+		drm_dbg_kms(&dev_priv->drm,
+			    "PSR Link CRC error, disabling PSR\n");
+
+	if (error_status & ~errors)
+		drm_err(&dev_priv->drm,
+			"PSR_ERROR_STATUS unhandled errors %x\n",
+			error_status & ~errors);
+	/* clear status register */
+	drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_ERROR_STATUS, error_status);
+
+	psr_alpm_check(intel_dp);
+	psr_capability_changed_check(intel_dp);
+
+exit:
+	mutex_unlock(&psr->lock);
+}
+
+bool intel_psr_enabled(struct intel_dp *intel_dp)
+{
+	bool ret;
+
+	if (!CAN_PSR(intel_dp))
+		return false;
+
+	mutex_lock(&intel_dp->psr.lock);
+	ret = intel_dp->psr.enabled;
+	mutex_unlock(&intel_dp->psr.lock);
+
+	return ret;
+}
+
+/**
+ * intel_psr_lock - grab PSR lock
+ * @crtc_state: the crtc state
+ *
+ * This is initially meant to be used by around CRTC update, when
+ * vblank sensitive registers are updated and we need grab the lock
+ * before it to avoid vblank evasion.
+ */
+void intel_psr_lock(const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+	struct intel_encoder *encoder;
+
+	if (!crtc_state->has_psr)
+		return;
+
+	for_each_intel_encoder_mask_with_psr(&i915->drm, encoder,
+					     crtc_state->uapi.encoder_mask) {
+		struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+
+		mutex_lock(&intel_dp->psr.lock);
+		break;
+	}
+}
+
+/**
+ * intel_psr_unlock - release PSR lock
+ * @crtc_state: the crtc state
+ *
+ * Release the PSR lock that was held during pipe update.
+ */
+void intel_psr_unlock(const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+	struct intel_encoder *encoder;
+
+	if (!crtc_state->has_psr)
+		return;
+
+	for_each_intel_encoder_mask_with_psr(&i915->drm, encoder,
+					     crtc_state->uapi.encoder_mask) {
+		struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+
+		mutex_unlock(&intel_dp->psr.lock);
+		break;
+	}
+}
diff --git a/drivers/gpu/drm/i915/display/intel_psr.h b/drivers/gpu/drm/i915/display/intel_psr.h
new file mode 100644
index 000000000..2ac3a46cc
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_psr.h
@@ -0,0 +1,61 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_PSR_H__
+#define __INTEL_PSR_H__
+
+#include <linux/types.h>
+
+enum fb_op_origin;
+struct drm_connector;
+struct drm_connector_state;
+struct drm_i915_private;
+struct intel_atomic_state;
+struct intel_crtc;
+struct intel_crtc_state;
+struct intel_dp;
+struct intel_encoder;
+struct intel_plane;
+struct intel_plane_state;
+
+void intel_psr_init_dpcd(struct intel_dp *intel_dp);
+void intel_psr_pre_plane_update(struct intel_atomic_state *state,
+				struct intel_crtc *crtc);
+void intel_psr_post_plane_update(const struct intel_atomic_state *state);
+void intel_psr_disable(struct intel_dp *intel_dp,
+		       const struct intel_crtc_state *old_crtc_state);
+int intel_psr_debug_set(struct intel_dp *intel_dp, u64 value);
+void intel_psr_invalidate(struct drm_i915_private *dev_priv,
+			  unsigned frontbuffer_bits,
+			  enum fb_op_origin origin);
+void intel_psr_flush(struct drm_i915_private *dev_priv,
+		     unsigned frontbuffer_bits,
+		     enum fb_op_origin origin);
+void intel_psr_init(struct intel_dp *intel_dp);
+void intel_psr_compute_config(struct intel_dp *intel_dp,
+			      struct intel_crtc_state *crtc_state,
+			      struct drm_connector_state *conn_state);
+void intel_psr_get_config(struct intel_encoder *encoder,
+			  struct intel_crtc_state *pipe_config);
+void intel_psr_irq_handler(struct intel_dp *intel_dp, u32 psr_iir);
+void intel_psr_short_pulse(struct intel_dp *intel_dp);
+void intel_psr_wait_for_idle_locked(const struct intel_crtc_state *new_crtc_state);
+bool intel_psr_enabled(struct intel_dp *intel_dp);
+int intel_psr2_sel_fetch_update(struct intel_atomic_state *state,
+				struct intel_crtc *crtc);
+void intel_psr2_program_trans_man_trk_ctl(const struct intel_crtc_state *crtc_state);
+void intel_psr2_program_plane_sel_fetch(struct intel_plane *plane,
+					const struct intel_crtc_state *crtc_state,
+					const struct intel_plane_state *plane_state,
+					int color_plane);
+void intel_psr2_disable_plane_sel_fetch(struct intel_plane *plane,
+					const struct intel_crtc_state *crtc_state);
+void intel_psr_pause(struct intel_dp *intel_dp);
+void intel_psr_resume(struct intel_dp *intel_dp);
+
+void intel_psr_lock(const struct intel_crtc_state *crtc_state);
+void intel_psr_unlock(const struct intel_crtc_state *crtc_state);
+
+#endif /* __INTEL_PSR_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_qp_tables.c b/drivers/gpu/drm/i915/display/intel_qp_tables.c
new file mode 100644
index 000000000..6f8e4ec5c
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_qp_tables.c
@@ -0,0 +1,309 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#include <drm/display/drm_dsc.h>
+
+#include "i915_utils.h"
+#include "intel_qp_tables.h"
+
+/* from BPP 6 to 24 in steps of 0.5 */
+#define RC_RANGE_QP444_8BPC_MAX_NUM_BPP		37
+
+/* from BPP 6 to 30 in steps of 0.5 */
+#define RC_RANGE_QP444_10BPC_MAX_NUM_BPP	49
+
+/* from BPP 6 to 36 in steps of 0.5 */
+#define RC_RANGE_QP444_12BPC_MAX_NUM_BPP	61
+
+/*
+ * These qp tables are as per the C model
+ * and it has the rows pointing to bpps which increment
+ * in steps of 0.5
+ * We do not support fractional bpps as of today,
+ * hence we would skip the fractional bpps during
+ * our references for qp calclulations.
+ */
+static const u8 rc_range_minqp444_8bpc[DSC_NUM_BUF_RANGES][RC_RANGE_QP444_8BPC_MAX_NUM_BPP] = {
+	{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+	{ 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+	{ 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
+	  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+	{ 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0,
+	  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+	{ 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1,
+	  1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+	{ 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1,
+	  1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0 },
+	{ 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1,
+	  1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0 },
+	{ 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2,
+	  2, 2, 2, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 },
+	{ 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2,
+	  2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 0, 0, 0 },
+	{ 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+	  3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 0, 0, 0 },
+	{ 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3,
+	  3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 0 },
+	{ 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4,
+	  4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 0 },
+	{ 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4,
+	  4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 0 },
+	{ 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5,
+	  5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1 },
+	{ 14, 14, 13, 13, 12, 12, 12, 12, 11, 11, 10, 10, 10, 10, 9, 9, 9, 8, 8,
+	  8, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3 }
+};
+
+static const u8 rc_range_maxqp444_8bpc[DSC_NUM_BUF_RANGES][RC_RANGE_QP444_8BPC_MAX_NUM_BPP] = {
+	{ 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 0, 0, 0, 0, 0, 0,
+	  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+	{ 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1,
+	  1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 },
+	{ 8, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1,
+	  1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 },
+	{ 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2,
+	  2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0 },
+	{ 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 4, 4, 3, 2, 2, 2, 2, 2,
+	  2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 0 },
+	{ 9, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3,
+	  3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1 },
+	{ 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3,
+	  3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1 },
+	{ 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 5, 5, 4, 4, 4, 4, 3,
+	  3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1 },
+	{ 11, 11, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 5,
+	  4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1 },
+	{ 12, 11, 11, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 6, 6, 5, 5, 5,
+	  5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1 },
+	{ 12, 12, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 8, 7, 7, 6, 6, 6,
+	  5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1 },
+	{ 12, 12, 12, 11, 11, 11, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 7, 7, 7,
+	  6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1 },
+	{ 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 9, 8, 8, 8, 7, 7, 7,
+	  6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1 },
+	{ 13, 13, 13, 13, 12, 12, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 8, 8, 8,
+	  8, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2 },
+	{ 15, 15, 14, 14, 13, 13, 13, 13, 12, 12, 11, 11, 11, 11, 10, 10, 10, 9,
+	  9, 9, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4 }
+};
+
+static const u8 rc_range_minqp444_10bpc[DSC_NUM_BUF_RANGES][RC_RANGE_QP444_10BPC_MAX_NUM_BPP] = {
+	{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	  0, 0, 0 },
+	{ 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1,
+	  1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	  0, 0, 0 },
+	{ 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2,
+	  2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	  0, 0, 0 },
+	{ 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3,
+	  3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
+	  0, 0, 0 },
+	{ 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3,
+	  3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
+	  0, 0, 0 },
+	{ 9, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4,
+	  4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 0, 0, 0,
+	  0, 0, 0 },
+	{ 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5,
+	  4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 0, 0,
+	  0, 0, 0 },
+	{ 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5,
+	  5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 0,
+	  0, 0, 0 },
+	{ 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5,
+	  5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1,
+	  1, 0, 0 },
+	{ 10, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6,
+	  6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1,
+	  1, 1, 0 },
+	{ 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6,
+	  6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1,
+	  1, 1, 1 },
+	{ 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8,
+	  7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2,
+	  2, 1, 1, 1 },
+	{ 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8,
+	  8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2,
+	  2, 2, 2, 1 },
+	{ 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11,
+	  11, 11, 11, 10, 10, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 4,
+	  4, 3, 3, 3, 3, 2, 2, 2, 2, 1 },
+	{ 18, 18, 17, 17, 16, 16, 16, 16, 15, 15, 14, 14, 14, 14, 13, 13, 13,
+	  12, 12, 12, 11, 11, 11, 11, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7,
+	  7, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3 }
+};
+
+static const u8 rc_range_maxqp444_10bpc[DSC_NUM_BUF_RANGES][RC_RANGE_QP444_10BPC_MAX_NUM_BPP] = {
+	{ 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2,
+	  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	  0, 0, 0 },
+	{ 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3,
+	  3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0,
+	  0, 0, 0 },
+	{ 12, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 6, 6, 5, 5, 5, 4,
+	  4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0,
+	  0, 0, 0, 0 },
+	{ 12, 12, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 7, 7, 6,
+	  6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1,
+	  1, 0, 0, 0, 0, 0, 0 },
+	{ 13, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 9, 8, 8, 7,
+	  6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1,
+	  1, 1, 1, 0, 0, 0, 0, 0 },
+	{ 13, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 9, 8, 8,
+	  7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2,
+	  2, 2, 1, 1, 1, 1, 0, 0 },
+	{ 13, 13, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 9, 8, 8,
+	  7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2,
+	  2, 2, 2, 1, 1, 1, 1, 1 },
+	{ 14, 14, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 10, 9, 9,
+	  8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3,
+	  3, 2, 2, 2, 1, 1, 1, 1 },
+	{ 15, 15, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 12, 11, 11, 10, 10, 9,
+	  9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3,
+	  3, 3, 2, 2, 2, 2, 1, 1 },
+	{ 16, 15, 15, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 11, 10,
+	  10, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4,
+	  4, 3, 3, 3, 2, 2, 2, 2, 1 },
+	{ 16, 16, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 13, 12, 12, 11, 11,
+	  10, 10, 10, 9, 9, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5,
+	  4, 4, 4, 3, 3, 3, 2, 2, 2, 2 },
+	{ 16, 16, 16, 15, 15, 15, 14, 14, 14, 14, 13, 13, 13, 13, 12, 12, 12,
+	  11, 11, 11, 10, 10, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5,
+	  5, 4, 4, 4, 4, 3, 3, 2, 2, 2 },
+	{ 16, 16, 16, 16, 15, 15, 15, 15, 15, 14, 14, 13, 13, 13, 12, 12, 12,
+	  11, 11, 11, 10, 10, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5,
+	  5, 4, 4, 4, 4, 3, 3, 3, 3, 2 },
+	{ 17, 17, 17, 17, 16, 16, 15, 15, 15, 15, 14, 14, 14, 14, 13, 13, 12,
+	  12, 12, 12, 11, 11, 10, 10, 10, 10, 9, 9, 8, 8, 8, 8, 7, 7, 6, 6, 6,
+	  6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2 },
+	{ 19, 19, 18, 18, 17, 17, 17, 17, 16, 16, 15, 15, 15, 15, 14, 14, 14,
+	  13, 13, 13, 12, 12, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 8,
+	  8, 8, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4 }
+};
+
+static const u8 rc_range_minqp444_12bpc[DSC_NUM_BUF_RANGES][RC_RANGE_QP444_12BPC_MAX_NUM_BPP] = {
+	{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	  0, 0, 0, 0, 0, 0, 0, 0, 0 },
+	{ 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+	  1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	  0, 0, 0, 0, 0, 0, 0, 0, 0 },
+	{ 11, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3,
+	  3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0,
+	  0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+	{ 11, 11, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 6, 6, 6, 6, 6, 5, 5, 5,
+	  5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 0,
+	  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+	{ 13, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 9, 8, 7, 7, 7,
+	  7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1,
+	  1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+	{ 13, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 8, 8,
+	  8, 8, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2,
+	  2, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0 },
+	{ 13, 13, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9,
+	  9, 9, 9, 8, 8, 8, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3,
+	  3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 },
+	{ 13, 13, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10,
+	  10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4,
+	  4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 0, 0, 0, 0 },
+	{ 13, 13, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
+	  11, 11, 11, 10, 10, 10, 10, 9, 9, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5,
+	  5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 0, 0 },
+	{ 14, 13, 13, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
+	  11, 11, 11, 10, 10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5,
+	  5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 0 },
+	{ 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12,
+	  12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 7,
+	  6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1 },
+	{ 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
+	  13, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8,
+	  7, 7, 7, 7, 6, 6, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1 },
+	{ 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
+	  13, 12, 12, 12, 12, 12, 12, 11, 11, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8,
+	  7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1 },
+	{ 17, 17, 17, 17, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
+	  15, 14, 14, 13, 13, 13, 13, 12, 12, 11, 11, 11, 11, 10, 10, 9, 9, 9, 9, 8, 8,
+	  7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 1 },
+	{ 22, 22, 21, 21, 20, 20, 20, 20, 19, 19, 18, 18, 18, 18, 17, 17, 17, 16, 16,
+	  16, 15, 15, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 11, 11, 11,
+	  10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 3 }
+};
+
+static const u8 rc_range_maxqp444_12bpc[DSC_NUM_BUF_RANGES][RC_RANGE_QP444_12BPC_MAX_NUM_BPP] = {
+	{ 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 9, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4,
+	  4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0,
+	  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+	{ 14, 14, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 9, 9, 9, 8, 8, 7, 7, 7, 7, 5,
+	  5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+	  1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+	{ 16, 15, 15, 14, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 11, 10, 10, 9, 9,
+	  9, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1,
+	  1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+	{ 16, 16, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 12, 11, 11, 10,
+	  10, 10, 8, 8, 8, 8, 8, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2,
+	  2, 2, 2, 2, 2, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+	{ 17, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 13, 12, 12, 11, 10,
+	  10, 10, 10, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3,
+	  2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0 },
+	{ 17, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 13, 12, 12, 11,
+	  11, 11, 11, 9, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 3,
+	  3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 0 },
+	{ 17, 17, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 13, 12, 12, 11,
+	  11, 11, 11, 11, 10, 10, 10, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5,
+	  5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 0 },
+	{ 18, 18, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 14, 13, 13, 12,
+	  12, 12, 12, 11, 11, 11, 11, 10, 10, 10, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6,
+	  6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1 },
+	{ 19, 19, 18, 18, 17, 17, 17, 17, 17, 17, 16, 16, 16, 15, 15, 14, 14, 13, 13,
+	  13, 13, 13, 12, 12, 12, 12, 11, 11, 10, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6,
+	  6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1 },
+	{ 20, 19, 19, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 16, 16, 15, 14, 14, 13,
+	  13, 13, 13, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7,
+	  6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1 },
+	{ 20, 20, 19, 19, 18, 18, 18, 18, 18, 18, 17, 17, 17, 16, 16, 15, 15, 14, 14,
+	  14, 13, 13, 12, 12, 12, 12, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9,
+	  8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2 },
+	{ 20, 20, 20, 19, 19, 19, 18, 18, 18, 18, 17, 17, 17, 17, 16, 16, 16, 15, 15,
+	  15, 14, 14, 13, 13, 13, 13, 12, 12, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 9,
+	  9, 8, 8, 8, 8, 7, 7, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2 },
+	{ 20, 20, 20, 20, 19, 19, 19, 19, 19, 18, 18, 17, 17, 17, 16, 16, 16, 15, 15,
+	  15, 14, 14, 13, 13, 13, 13, 12, 12, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 9,
+	  9, 8, 8, 8, 8, 7, 7, 7, 7, 6, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2 },
+	{ 21, 21, 21, 21, 20, 20, 19, 19, 19, 19, 18, 18, 18, 18, 17, 17, 16, 16, 16,
+	  16, 15, 15, 14, 14, 14, 14, 13, 13, 12, 12, 12, 12, 11, 11, 10, 10, 10, 10,
+	  9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 2 },
+	{ 23, 23, 22, 22, 21, 21, 21, 21, 20, 20, 19, 19, 19, 19, 18, 18, 18, 17, 17,
+	  17, 16, 16, 16, 16, 15, 15, 14, 14, 14, 14, 14, 13, 13, 12, 12, 12, 12, 12,
+	  11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 5, 5, 4 }
+};
+
+#define PARAM_TABLE(_minmax, _bpc, _row, _col)  do { \
+	if (bpc == (_bpc)) \
+		return rc_range_##_minmax##qp444_##_bpc##bpc[_row][_col]; \
+} while (0)
+
+u8 intel_lookup_range_min_qp(int bpc, int buf_i, int bpp_i)
+{
+	PARAM_TABLE(min, 8, buf_i, bpp_i);
+	PARAM_TABLE(min, 10, buf_i, bpp_i);
+	PARAM_TABLE(min, 12, buf_i, bpp_i);
+
+	MISSING_CASE(bpc);
+	return 0;
+}
+
+u8 intel_lookup_range_max_qp(int bpc, int buf_i, int bpp_i)
+{
+	PARAM_TABLE(max, 8, buf_i, bpp_i);
+	PARAM_TABLE(max, 10, buf_i, bpp_i);
+	PARAM_TABLE(max, 12, buf_i, bpp_i);
+
+	MISSING_CASE(bpc);
+	return 0;
+}
diff --git a/drivers/gpu/drm/i915/display/intel_qp_tables.h b/drivers/gpu/drm/i915/display/intel_qp_tables.h
new file mode 100644
index 000000000..9fb3c36bd
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_qp_tables.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#ifndef _INTEL_QP_TABLES_H_
+#define _INTEL_QP_TABLES_H_
+
+#include <linux/types.h>
+
+u8 intel_lookup_range_min_qp(int bpc, int buf_i, int bpp_i);
+u8 intel_lookup_range_max_qp(int bpc, int buf_i, int bpp_i);
+
+#endif
diff --git a/drivers/gpu/drm/i915/display/intel_quirks.c b/drivers/gpu/drm/i915/display/intel_quirks.c
new file mode 100644
index 000000000..a280448df
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_quirks.c
@@ -0,0 +1,230 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2018 Intel Corporation
+ */
+
+#include <linux/dmi.h>
+
+#include "i915_drv.h"
+#include "intel_display_types.h"
+#include "intel_quirks.h"
+
+static void intel_set_quirk(struct drm_i915_private *i915, enum intel_quirk_id quirk)
+{
+	i915->display.quirks.mask |= BIT(quirk);
+}
+
+/*
+ * Some machines (Lenovo U160) do not work with SSC on LVDS for some reason
+ */
+static void quirk_ssc_force_disable(struct drm_i915_private *i915)
+{
+	intel_set_quirk(i915, QUIRK_LVDS_SSC_DISABLE);
+	drm_info(&i915->drm, "applying lvds SSC disable quirk\n");
+}
+
+/*
+ * A machine (e.g. Acer Aspire 5734Z) may need to invert the panel backlight
+ * brightness value
+ */
+static void quirk_invert_brightness(struct drm_i915_private *i915)
+{
+	intel_set_quirk(i915, QUIRK_INVERT_BRIGHTNESS);
+	drm_info(&i915->drm, "applying inverted panel brightness quirk\n");
+}
+
+/* Some VBT's incorrectly indicate no backlight is present */
+static void quirk_backlight_present(struct drm_i915_private *i915)
+{
+	intel_set_quirk(i915, QUIRK_BACKLIGHT_PRESENT);
+	drm_info(&i915->drm, "applying backlight present quirk\n");
+}
+
+/* Toshiba Satellite P50-C-18C requires T12 delay to be min 800ms
+ * which is 300 ms greater than eDP spec T12 min.
+ */
+static void quirk_increase_t12_delay(struct drm_i915_private *i915)
+{
+	intel_set_quirk(i915, QUIRK_INCREASE_T12_DELAY);
+	drm_info(&i915->drm, "Applying T12 delay quirk\n");
+}
+
+/*
+ * GeminiLake NUC HDMI outputs require additional off time
+ * this allows the onboard retimer to correctly sync to signal
+ */
+static void quirk_increase_ddi_disabled_time(struct drm_i915_private *i915)
+{
+	intel_set_quirk(i915, QUIRK_INCREASE_DDI_DISABLED_TIME);
+	drm_info(&i915->drm, "Applying Increase DDI Disabled quirk\n");
+}
+
+static void quirk_no_pps_backlight_power_hook(struct drm_i915_private *i915)
+{
+	intel_set_quirk(i915, QUIRK_NO_PPS_BACKLIGHT_POWER_HOOK);
+	drm_info(&i915->drm, "Applying no pps backlight power quirk\n");
+}
+
+struct intel_quirk {
+	int device;
+	int subsystem_vendor;
+	int subsystem_device;
+	void (*hook)(struct drm_i915_private *i915);
+};
+
+/* For systems that don't have a meaningful PCI subdevice/subvendor ID */
+struct intel_dmi_quirk {
+	void (*hook)(struct drm_i915_private *i915);
+	const struct dmi_system_id (*dmi_id_list)[];
+};
+
+static int intel_dmi_reverse_brightness(const struct dmi_system_id *id)
+{
+	DRM_INFO("Backlight polarity reversed on %s\n", id->ident);
+	return 1;
+}
+
+static int intel_dmi_no_pps_backlight(const struct dmi_system_id *id)
+{
+	DRM_INFO("No pps backlight support on %s\n", id->ident);
+	return 1;
+}
+
+static const struct intel_dmi_quirk intel_dmi_quirks[] = {
+	{
+		.dmi_id_list = &(const struct dmi_system_id[]) {
+			{
+				.callback = intel_dmi_reverse_brightness,
+				.ident = "NCR Corporation",
+				.matches = {DMI_MATCH(DMI_SYS_VENDOR, "NCR Corporation"),
+					    DMI_MATCH(DMI_PRODUCT_NAME, ""),
+				},
+			},
+			{
+				.callback = intel_dmi_reverse_brightness,
+				.ident = "Thundersoft TST178 tablet",
+				/* DMI strings are too generic, also match on BIOS date */
+				.matches = {DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
+					    DMI_EXACT_MATCH(DMI_BOARD_NAME, "Aptio CRB"),
+					    DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "To be filled by O.E.M."),
+					    DMI_EXACT_MATCH(DMI_BIOS_DATE, "04/15/2014"),
+				},
+			},
+			{ }  /* terminating entry */
+		},
+		.hook = quirk_invert_brightness,
+	},
+	{
+		.dmi_id_list = &(const struct dmi_system_id[]) {
+			{
+				.callback = intel_dmi_no_pps_backlight,
+				.ident = "Google Lillipup sku524294",
+				.matches = {DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Google"),
+					    DMI_EXACT_MATCH(DMI_BOARD_NAME, "Lindar"),
+					    DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "sku524294"),
+				},
+			},
+			{
+				.callback = intel_dmi_no_pps_backlight,
+				.ident = "Google Lillipup sku524295",
+				.matches = {DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Google"),
+					    DMI_EXACT_MATCH(DMI_BOARD_NAME, "Lindar"),
+					    DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "sku524295"),
+				},
+			},
+			{ }
+		},
+		.hook = quirk_no_pps_backlight_power_hook,
+	},
+};
+
+static struct intel_quirk intel_quirks[] = {
+	/* Lenovo U160 cannot use SSC on LVDS */
+	{ 0x0046, 0x17aa, 0x3920, quirk_ssc_force_disable },
+
+	/* Sony Vaio Y cannot use SSC on LVDS */
+	{ 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable },
+
+	/* Acer Aspire 5734Z must invert backlight brightness */
+	{ 0x2a42, 0x1025, 0x0459, quirk_invert_brightness },
+
+	/* Acer/eMachines G725 */
+	{ 0x2a42, 0x1025, 0x0210, quirk_invert_brightness },
+
+	/* Acer/eMachines e725 */
+	{ 0x2a42, 0x1025, 0x0212, quirk_invert_brightness },
+
+	/* Acer/Packard Bell NCL20 */
+	{ 0x2a42, 0x1025, 0x034b, quirk_invert_brightness },
+
+	/* Acer Aspire 4736Z */
+	{ 0x2a42, 0x1025, 0x0260, quirk_invert_brightness },
+
+	/* Acer Aspire 5336 */
+	{ 0x2a42, 0x1025, 0x048a, quirk_invert_brightness },
+
+	/* Acer C720 and C720P Chromebooks (Celeron 2955U) have backlights */
+	{ 0x0a06, 0x1025, 0x0a11, quirk_backlight_present },
+
+	/* Acer C720 Chromebook (Core i3 4005U) */
+	{ 0x0a16, 0x1025, 0x0a11, quirk_backlight_present },
+
+	/* Apple Macbook 2,1 (Core 2 T7400) */
+	{ 0x27a2, 0x8086, 0x7270, quirk_backlight_present },
+
+	/* Apple Macbook 4,1 */
+	{ 0x2a02, 0x106b, 0x00a1, quirk_backlight_present },
+
+	/* Toshiba CB35 Chromebook (Celeron 2955U) */
+	{ 0x0a06, 0x1179, 0x0a88, quirk_backlight_present },
+
+	/* HP Chromebook 14 (Celeron 2955U) */
+	{ 0x0a06, 0x103c, 0x21ed, quirk_backlight_present },
+
+	/* Dell Chromebook 11 */
+	{ 0x0a06, 0x1028, 0x0a35, quirk_backlight_present },
+
+	/* Dell Chromebook 11 (2015 version) */
+	{ 0x0a16, 0x1028, 0x0a35, quirk_backlight_present },
+
+	/* Toshiba Satellite P50-C-18C */
+	{ 0x191B, 0x1179, 0xF840, quirk_increase_t12_delay },
+
+	/* GeminiLake NUC */
+	{ 0x3185, 0x8086, 0x2072, quirk_increase_ddi_disabled_time },
+	{ 0x3184, 0x8086, 0x2072, quirk_increase_ddi_disabled_time },
+	/* ASRock ITX*/
+	{ 0x3185, 0x1849, 0x2212, quirk_increase_ddi_disabled_time },
+	{ 0x3184, 0x1849, 0x2212, quirk_increase_ddi_disabled_time },
+	/* ECS Liva Q2 */
+	{ 0x3185, 0x1019, 0xa94d, quirk_increase_ddi_disabled_time },
+	{ 0x3184, 0x1019, 0xa94d, quirk_increase_ddi_disabled_time },
+	/* HP Notebook - 14-r206nv */
+	{ 0x0f31, 0x103c, 0x220f, quirk_invert_brightness },
+};
+
+void intel_init_quirks(struct drm_i915_private *i915)
+{
+	struct pci_dev *d = to_pci_dev(i915->drm.dev);
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) {
+		struct intel_quirk *q = &intel_quirks[i];
+
+		if (d->device == q->device &&
+		    (d->subsystem_vendor == q->subsystem_vendor ||
+		     q->subsystem_vendor == PCI_ANY_ID) &&
+		    (d->subsystem_device == q->subsystem_device ||
+		     q->subsystem_device == PCI_ANY_ID))
+			q->hook(i915);
+	}
+	for (i = 0; i < ARRAY_SIZE(intel_dmi_quirks); i++) {
+		if (dmi_check_system(*intel_dmi_quirks[i].dmi_id_list) != 0)
+			intel_dmi_quirks[i].hook(i915);
+	}
+}
+
+bool intel_has_quirk(struct drm_i915_private *i915, enum intel_quirk_id quirk)
+{
+	return i915->display.quirks.mask & BIT(quirk);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_quirks.h b/drivers/gpu/drm/i915/display/intel_quirks.h
new file mode 100644
index 000000000..10a4d1631
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_quirks.h
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_QUIRKS_H__
+#define __INTEL_QUIRKS_H__
+
+#include <linux/types.h>
+
+struct drm_i915_private;
+
+enum intel_quirk_id {
+	QUIRK_BACKLIGHT_PRESENT,
+	QUIRK_INCREASE_DDI_DISABLED_TIME,
+	QUIRK_INCREASE_T12_DELAY,
+	QUIRK_INVERT_BRIGHTNESS,
+	QUIRK_LVDS_SSC_DISABLE,
+	QUIRK_NO_PPS_BACKLIGHT_POWER_HOOK,
+};
+
+void intel_init_quirks(struct drm_i915_private *i915);
+bool intel_has_quirk(struct drm_i915_private *i915, enum intel_quirk_id quirk);
+
+#endif /* __INTEL_QUIRKS_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_sdvo.c b/drivers/gpu/drm/i915/display/intel_sdvo.c
new file mode 100644
index 000000000..8294dddfd
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_sdvo.c
@@ -0,0 +1,3446 @@
+/*
+ * Copyright 2006 Dave Airlie <airlied@linux.ie>
+ * Copyright © 2006-2007 Intel Corporation
+ *   Jesse Barnes <jesse.barnes@intel.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *	Eric Anholt <eric@anholt.net>
+ */
+
+#include <linux/delay.h>
+#include <linux/export.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+
+#include <drm/display/drm_hdmi_helper.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_edid.h>
+
+#include "i915_drv.h"
+#include "intel_atomic.h"
+#include "intel_connector.h"
+#include "intel_crtc.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_fifo_underrun.h"
+#include "intel_gmbus.h"
+#include "intel_hdmi.h"
+#include "intel_hotplug.h"
+#include "intel_panel.h"
+#include "intel_sdvo.h"
+#include "intel_sdvo_regs.h"
+
+#define SDVO_TMDS_MASK (SDVO_OUTPUT_TMDS0 | SDVO_OUTPUT_TMDS1)
+#define SDVO_RGB_MASK  (SDVO_OUTPUT_RGB0 | SDVO_OUTPUT_RGB1)
+#define SDVO_LVDS_MASK (SDVO_OUTPUT_LVDS0 | SDVO_OUTPUT_LVDS1)
+#define SDVO_TV_MASK   (SDVO_OUTPUT_CVBS0 | SDVO_OUTPUT_SVID0 | SDVO_OUTPUT_YPRPB0)
+
+#define SDVO_OUTPUT_MASK (SDVO_TMDS_MASK | SDVO_RGB_MASK | SDVO_LVDS_MASK |\
+			SDVO_TV_MASK)
+
+#define IS_TV(c)	(c->output_flag & SDVO_TV_MASK)
+#define IS_TMDS(c)	(c->output_flag & SDVO_TMDS_MASK)
+#define IS_LVDS(c)	(c->output_flag & SDVO_LVDS_MASK)
+#define IS_TV_OR_LVDS(c) (c->output_flag & (SDVO_TV_MASK | SDVO_LVDS_MASK))
+#define IS_DIGITAL(c) (c->output_flag & (SDVO_TMDS_MASK | SDVO_LVDS_MASK))
+
+
+static const char * const tv_format_names[] = {
+	"NTSC_M"   , "NTSC_J"  , "NTSC_443",
+	"PAL_B"    , "PAL_D"   , "PAL_G"   ,
+	"PAL_H"    , "PAL_I"   , "PAL_M"   ,
+	"PAL_N"    , "PAL_NC"  , "PAL_60"  ,
+	"SECAM_B"  , "SECAM_D" , "SECAM_G" ,
+	"SECAM_K"  , "SECAM_K1", "SECAM_L" ,
+	"SECAM_60"
+};
+
+#define TV_FORMAT_NUM  ARRAY_SIZE(tv_format_names)
+
+struct intel_sdvo {
+	struct intel_encoder base;
+
+	struct i2c_adapter *i2c;
+	u8 slave_addr;
+
+	struct i2c_adapter ddc;
+
+	/* Register for the SDVO device: SDVOB or SDVOC */
+	i915_reg_t sdvo_reg;
+
+	/* Active outputs controlled by this SDVO output */
+	u16 controlled_output;
+
+	/*
+	 * Capabilities of the SDVO device returned by
+	 * intel_sdvo_get_capabilities()
+	 */
+	struct intel_sdvo_caps caps;
+
+	u8 colorimetry_cap;
+
+	/* Pixel clock limitations reported by the SDVO device, in kHz */
+	int pixel_clock_min, pixel_clock_max;
+
+	/*
+	* For multiple function SDVO device,
+	* this is for current attached outputs.
+	*/
+	u16 attached_output;
+
+	/*
+	 * Hotplug activation bits for this device
+	 */
+	u16 hotplug_active;
+
+	enum port port;
+
+	bool has_hdmi_audio;
+
+	/* DDC bus used by this SDVO encoder */
+	u8 ddc_bus;
+
+	/*
+	 * the sdvo flag gets lost in round trip: dtd->adjusted_mode->dtd
+	 */
+	u8 dtd_sdvo_flags;
+};
+
+struct intel_sdvo_connector {
+	struct intel_connector base;
+
+	/* Mark the type of connector */
+	u16 output_flag;
+
+	/* This contains all current supported TV format */
+	u8 tv_format_supported[TV_FORMAT_NUM];
+	int   format_supported_num;
+	struct drm_property *tv_format;
+
+	/* add the property for the SDVO-TV */
+	struct drm_property *left;
+	struct drm_property *right;
+	struct drm_property *top;
+	struct drm_property *bottom;
+	struct drm_property *hpos;
+	struct drm_property *vpos;
+	struct drm_property *contrast;
+	struct drm_property *saturation;
+	struct drm_property *hue;
+	struct drm_property *sharpness;
+	struct drm_property *flicker_filter;
+	struct drm_property *flicker_filter_adaptive;
+	struct drm_property *flicker_filter_2d;
+	struct drm_property *tv_chroma_filter;
+	struct drm_property *tv_luma_filter;
+	struct drm_property *dot_crawl;
+
+	/* add the property for the SDVO-TV/LVDS */
+	struct drm_property *brightness;
+
+	/* this is to get the range of margin.*/
+	u32 max_hscan, max_vscan;
+
+	/**
+	 * This is set if we treat the device as HDMI, instead of DVI.
+	 */
+	bool is_hdmi;
+};
+
+struct intel_sdvo_connector_state {
+	/* base.base: tv.saturation/contrast/hue/brightness */
+	struct intel_digital_connector_state base;
+
+	struct {
+		unsigned overscan_h, overscan_v, hpos, vpos, sharpness;
+		unsigned flicker_filter, flicker_filter_2d, flicker_filter_adaptive;
+		unsigned chroma_filter, luma_filter, dot_crawl;
+	} tv;
+};
+
+static struct intel_sdvo *to_sdvo(struct intel_encoder *encoder)
+{
+	return container_of(encoder, struct intel_sdvo, base);
+}
+
+static struct intel_sdvo *intel_attached_sdvo(struct intel_connector *connector)
+{
+	return to_sdvo(intel_attached_encoder(connector));
+}
+
+static struct intel_sdvo_connector *
+to_intel_sdvo_connector(struct drm_connector *connector)
+{
+	return container_of(connector, struct intel_sdvo_connector, base.base);
+}
+
+#define to_intel_sdvo_connector_state(conn_state) \
+	container_of((conn_state), struct intel_sdvo_connector_state, base.base)
+
+static bool
+intel_sdvo_output_setup(struct intel_sdvo *intel_sdvo, u16 flags);
+static bool
+intel_sdvo_tv_create_property(struct intel_sdvo *intel_sdvo,
+			      struct intel_sdvo_connector *intel_sdvo_connector,
+			      int type);
+static bool
+intel_sdvo_create_enhance_property(struct intel_sdvo *intel_sdvo,
+				   struct intel_sdvo_connector *intel_sdvo_connector);
+
+/*
+ * Writes the SDVOB or SDVOC with the given value, but always writes both
+ * SDVOB and SDVOC to work around apparent hardware issues (according to
+ * comments in the BIOS).
+ */
+static void intel_sdvo_write_sdvox(struct intel_sdvo *intel_sdvo, u32 val)
+{
+	struct drm_device *dev = intel_sdvo->base.base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	u32 bval = val, cval = val;
+	int i;
+
+	if (HAS_PCH_SPLIT(dev_priv)) {
+		intel_de_write(dev_priv, intel_sdvo->sdvo_reg, val);
+		intel_de_posting_read(dev_priv, intel_sdvo->sdvo_reg);
+		/*
+		 * HW workaround, need to write this twice for issue
+		 * that may result in first write getting masked.
+		 */
+		if (HAS_PCH_IBX(dev_priv)) {
+			intel_de_write(dev_priv, intel_sdvo->sdvo_reg, val);
+			intel_de_posting_read(dev_priv, intel_sdvo->sdvo_reg);
+		}
+		return;
+	}
+
+	if (intel_sdvo->port == PORT_B)
+		cval = intel_de_read(dev_priv, GEN3_SDVOC);
+	else
+		bval = intel_de_read(dev_priv, GEN3_SDVOB);
+
+	/*
+	 * Write the registers twice for luck. Sometimes,
+	 * writing them only once doesn't appear to 'stick'.
+	 * The BIOS does this too. Yay, magic
+	 */
+	for (i = 0; i < 2; i++) {
+		intel_de_write(dev_priv, GEN3_SDVOB, bval);
+		intel_de_posting_read(dev_priv, GEN3_SDVOB);
+
+		intel_de_write(dev_priv, GEN3_SDVOC, cval);
+		intel_de_posting_read(dev_priv, GEN3_SDVOC);
+	}
+}
+
+static bool intel_sdvo_read_byte(struct intel_sdvo *intel_sdvo, u8 addr, u8 *ch)
+{
+	struct i2c_msg msgs[] = {
+		{
+			.addr = intel_sdvo->slave_addr,
+			.flags = 0,
+			.len = 1,
+			.buf = &addr,
+		},
+		{
+			.addr = intel_sdvo->slave_addr,
+			.flags = I2C_M_RD,
+			.len = 1,
+			.buf = ch,
+		}
+	};
+	int ret;
+
+	if ((ret = i2c_transfer(intel_sdvo->i2c, msgs, 2)) == 2)
+		return true;
+
+	DRM_DEBUG_KMS("i2c transfer returned %d\n", ret);
+	return false;
+}
+
+#define SDVO_CMD_NAME_ENTRY(cmd_) { .cmd = SDVO_CMD_ ## cmd_, .name = #cmd_ }
+
+/** Mapping of command numbers to names, for debug output */
+static const struct {
+	u8 cmd;
+	const char *name;
+} __packed sdvo_cmd_names[] = {
+	SDVO_CMD_NAME_ENTRY(RESET),
+	SDVO_CMD_NAME_ENTRY(GET_DEVICE_CAPS),
+	SDVO_CMD_NAME_ENTRY(GET_FIRMWARE_REV),
+	SDVO_CMD_NAME_ENTRY(GET_TRAINED_INPUTS),
+	SDVO_CMD_NAME_ENTRY(GET_ACTIVE_OUTPUTS),
+	SDVO_CMD_NAME_ENTRY(SET_ACTIVE_OUTPUTS),
+	SDVO_CMD_NAME_ENTRY(GET_IN_OUT_MAP),
+	SDVO_CMD_NAME_ENTRY(SET_IN_OUT_MAP),
+	SDVO_CMD_NAME_ENTRY(GET_ATTACHED_DISPLAYS),
+	SDVO_CMD_NAME_ENTRY(GET_HOT_PLUG_SUPPORT),
+	SDVO_CMD_NAME_ENTRY(SET_ACTIVE_HOT_PLUG),
+	SDVO_CMD_NAME_ENTRY(GET_ACTIVE_HOT_PLUG),
+	SDVO_CMD_NAME_ENTRY(GET_INTERRUPT_EVENT_SOURCE),
+	SDVO_CMD_NAME_ENTRY(SET_TARGET_INPUT),
+	SDVO_CMD_NAME_ENTRY(SET_TARGET_OUTPUT),
+	SDVO_CMD_NAME_ENTRY(GET_INPUT_TIMINGS_PART1),
+	SDVO_CMD_NAME_ENTRY(GET_INPUT_TIMINGS_PART2),
+	SDVO_CMD_NAME_ENTRY(SET_INPUT_TIMINGS_PART1),
+	SDVO_CMD_NAME_ENTRY(SET_INPUT_TIMINGS_PART2),
+	SDVO_CMD_NAME_ENTRY(SET_OUTPUT_TIMINGS_PART1),
+	SDVO_CMD_NAME_ENTRY(SET_OUTPUT_TIMINGS_PART2),
+	SDVO_CMD_NAME_ENTRY(GET_OUTPUT_TIMINGS_PART1),
+	SDVO_CMD_NAME_ENTRY(GET_OUTPUT_TIMINGS_PART2),
+	SDVO_CMD_NAME_ENTRY(CREATE_PREFERRED_INPUT_TIMING),
+	SDVO_CMD_NAME_ENTRY(GET_PREFERRED_INPUT_TIMING_PART1),
+	SDVO_CMD_NAME_ENTRY(GET_PREFERRED_INPUT_TIMING_PART2),
+	SDVO_CMD_NAME_ENTRY(GET_INPUT_PIXEL_CLOCK_RANGE),
+	SDVO_CMD_NAME_ENTRY(GET_OUTPUT_PIXEL_CLOCK_RANGE),
+	SDVO_CMD_NAME_ENTRY(GET_SUPPORTED_CLOCK_RATE_MULTS),
+	SDVO_CMD_NAME_ENTRY(GET_CLOCK_RATE_MULT),
+	SDVO_CMD_NAME_ENTRY(SET_CLOCK_RATE_MULT),
+	SDVO_CMD_NAME_ENTRY(GET_SUPPORTED_TV_FORMATS),
+	SDVO_CMD_NAME_ENTRY(GET_TV_FORMAT),
+	SDVO_CMD_NAME_ENTRY(SET_TV_FORMAT),
+	SDVO_CMD_NAME_ENTRY(GET_SUPPORTED_POWER_STATES),
+	SDVO_CMD_NAME_ENTRY(GET_POWER_STATE),
+	SDVO_CMD_NAME_ENTRY(SET_ENCODER_POWER_STATE),
+	SDVO_CMD_NAME_ENTRY(SET_DISPLAY_POWER_STATE),
+	SDVO_CMD_NAME_ENTRY(SET_CONTROL_BUS_SWITCH),
+	SDVO_CMD_NAME_ENTRY(GET_SDTV_RESOLUTION_SUPPORT),
+	SDVO_CMD_NAME_ENTRY(GET_SCALED_HDTV_RESOLUTION_SUPPORT),
+	SDVO_CMD_NAME_ENTRY(GET_SUPPORTED_ENHANCEMENTS),
+
+	/* Add the op code for SDVO enhancements */
+	SDVO_CMD_NAME_ENTRY(GET_MAX_HPOS),
+	SDVO_CMD_NAME_ENTRY(GET_HPOS),
+	SDVO_CMD_NAME_ENTRY(SET_HPOS),
+	SDVO_CMD_NAME_ENTRY(GET_MAX_VPOS),
+	SDVO_CMD_NAME_ENTRY(GET_VPOS),
+	SDVO_CMD_NAME_ENTRY(SET_VPOS),
+	SDVO_CMD_NAME_ENTRY(GET_MAX_SATURATION),
+	SDVO_CMD_NAME_ENTRY(GET_SATURATION),
+	SDVO_CMD_NAME_ENTRY(SET_SATURATION),
+	SDVO_CMD_NAME_ENTRY(GET_MAX_HUE),
+	SDVO_CMD_NAME_ENTRY(GET_HUE),
+	SDVO_CMD_NAME_ENTRY(SET_HUE),
+	SDVO_CMD_NAME_ENTRY(GET_MAX_CONTRAST),
+	SDVO_CMD_NAME_ENTRY(GET_CONTRAST),
+	SDVO_CMD_NAME_ENTRY(SET_CONTRAST),
+	SDVO_CMD_NAME_ENTRY(GET_MAX_BRIGHTNESS),
+	SDVO_CMD_NAME_ENTRY(GET_BRIGHTNESS),
+	SDVO_CMD_NAME_ENTRY(SET_BRIGHTNESS),
+	SDVO_CMD_NAME_ENTRY(GET_MAX_OVERSCAN_H),
+	SDVO_CMD_NAME_ENTRY(GET_OVERSCAN_H),
+	SDVO_CMD_NAME_ENTRY(SET_OVERSCAN_H),
+	SDVO_CMD_NAME_ENTRY(GET_MAX_OVERSCAN_V),
+	SDVO_CMD_NAME_ENTRY(GET_OVERSCAN_V),
+	SDVO_CMD_NAME_ENTRY(SET_OVERSCAN_V),
+	SDVO_CMD_NAME_ENTRY(GET_MAX_FLICKER_FILTER),
+	SDVO_CMD_NAME_ENTRY(GET_FLICKER_FILTER),
+	SDVO_CMD_NAME_ENTRY(SET_FLICKER_FILTER),
+	SDVO_CMD_NAME_ENTRY(GET_MAX_FLICKER_FILTER_ADAPTIVE),
+	SDVO_CMD_NAME_ENTRY(GET_FLICKER_FILTER_ADAPTIVE),
+	SDVO_CMD_NAME_ENTRY(SET_FLICKER_FILTER_ADAPTIVE),
+	SDVO_CMD_NAME_ENTRY(GET_MAX_FLICKER_FILTER_2D),
+	SDVO_CMD_NAME_ENTRY(GET_FLICKER_FILTER_2D),
+	SDVO_CMD_NAME_ENTRY(SET_FLICKER_FILTER_2D),
+	SDVO_CMD_NAME_ENTRY(GET_MAX_SHARPNESS),
+	SDVO_CMD_NAME_ENTRY(GET_SHARPNESS),
+	SDVO_CMD_NAME_ENTRY(SET_SHARPNESS),
+	SDVO_CMD_NAME_ENTRY(GET_DOT_CRAWL),
+	SDVO_CMD_NAME_ENTRY(SET_DOT_CRAWL),
+	SDVO_CMD_NAME_ENTRY(GET_MAX_TV_CHROMA_FILTER),
+	SDVO_CMD_NAME_ENTRY(GET_TV_CHROMA_FILTER),
+	SDVO_CMD_NAME_ENTRY(SET_TV_CHROMA_FILTER),
+	SDVO_CMD_NAME_ENTRY(GET_MAX_TV_LUMA_FILTER),
+	SDVO_CMD_NAME_ENTRY(GET_TV_LUMA_FILTER),
+	SDVO_CMD_NAME_ENTRY(SET_TV_LUMA_FILTER),
+
+	/* HDMI op code */
+	SDVO_CMD_NAME_ENTRY(GET_SUPP_ENCODE),
+	SDVO_CMD_NAME_ENTRY(GET_ENCODE),
+	SDVO_CMD_NAME_ENTRY(SET_ENCODE),
+	SDVO_CMD_NAME_ENTRY(SET_PIXEL_REPLI),
+	SDVO_CMD_NAME_ENTRY(GET_PIXEL_REPLI),
+	SDVO_CMD_NAME_ENTRY(GET_COLORIMETRY_CAP),
+	SDVO_CMD_NAME_ENTRY(SET_COLORIMETRY),
+	SDVO_CMD_NAME_ENTRY(GET_COLORIMETRY),
+	SDVO_CMD_NAME_ENTRY(GET_AUDIO_ENCRYPT_PREFER),
+	SDVO_CMD_NAME_ENTRY(SET_AUDIO_STAT),
+	SDVO_CMD_NAME_ENTRY(GET_AUDIO_STAT),
+	SDVO_CMD_NAME_ENTRY(GET_HBUF_INDEX),
+	SDVO_CMD_NAME_ENTRY(SET_HBUF_INDEX),
+	SDVO_CMD_NAME_ENTRY(GET_HBUF_INFO),
+	SDVO_CMD_NAME_ENTRY(GET_HBUF_AV_SPLIT),
+	SDVO_CMD_NAME_ENTRY(SET_HBUF_AV_SPLIT),
+	SDVO_CMD_NAME_ENTRY(GET_HBUF_TXRATE),
+	SDVO_CMD_NAME_ENTRY(SET_HBUF_TXRATE),
+	SDVO_CMD_NAME_ENTRY(SET_HBUF_DATA),
+	SDVO_CMD_NAME_ENTRY(GET_HBUF_DATA),
+};
+
+#undef SDVO_CMD_NAME_ENTRY
+
+static const char *sdvo_cmd_name(u8 cmd)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(sdvo_cmd_names); i++) {
+		if (cmd == sdvo_cmd_names[i].cmd)
+			return sdvo_cmd_names[i].name;
+	}
+
+	return NULL;
+}
+
+#define SDVO_NAME(svdo) ((svdo)->port == PORT_B ? "SDVOB" : "SDVOC")
+
+static void intel_sdvo_debug_write(struct intel_sdvo *intel_sdvo, u8 cmd,
+				   const void *args, int args_len)
+{
+	struct drm_i915_private *dev_priv = to_i915(intel_sdvo->base.base.dev);
+	const char *cmd_name;
+	int i, pos = 0;
+	char buffer[64];
+
+#define BUF_PRINT(args...) \
+	pos += snprintf(buffer + pos, max_t(int, sizeof(buffer) - pos, 0), args)
+
+	for (i = 0; i < args_len; i++) {
+		BUF_PRINT("%02X ", ((u8 *)args)[i]);
+	}
+	for (; i < 8; i++) {
+		BUF_PRINT("   ");
+	}
+
+	cmd_name = sdvo_cmd_name(cmd);
+	if (cmd_name)
+		BUF_PRINT("(%s)", cmd_name);
+	else
+		BUF_PRINT("(%02X)", cmd);
+
+	drm_WARN_ON(&dev_priv->drm, pos >= sizeof(buffer) - 1);
+#undef BUF_PRINT
+
+	DRM_DEBUG_KMS("%s: W: %02X %s\n", SDVO_NAME(intel_sdvo), cmd, buffer);
+}
+
+static const char * const cmd_status_names[] = {
+	[SDVO_CMD_STATUS_POWER_ON] = "Power on",
+	[SDVO_CMD_STATUS_SUCCESS] = "Success",
+	[SDVO_CMD_STATUS_NOTSUPP] = "Not supported",
+	[SDVO_CMD_STATUS_INVALID_ARG] = "Invalid arg",
+	[SDVO_CMD_STATUS_PENDING] = "Pending",
+	[SDVO_CMD_STATUS_TARGET_NOT_SPECIFIED] = "Target not specified",
+	[SDVO_CMD_STATUS_SCALING_NOT_SUPP] = "Scaling not supported",
+};
+
+static const char *sdvo_cmd_status(u8 status)
+{
+	if (status < ARRAY_SIZE(cmd_status_names))
+		return cmd_status_names[status];
+	else
+		return NULL;
+}
+
+static bool __intel_sdvo_write_cmd(struct intel_sdvo *intel_sdvo, u8 cmd,
+				   const void *args, int args_len,
+				   bool unlocked)
+{
+	u8 *buf, status;
+	struct i2c_msg *msgs;
+	int i, ret = true;
+
+	/* Would be simpler to allocate both in one go ? */
+	buf = kzalloc(args_len * 2 + 2, GFP_KERNEL);
+	if (!buf)
+		return false;
+
+	msgs = kcalloc(args_len + 3, sizeof(*msgs), GFP_KERNEL);
+	if (!msgs) {
+		kfree(buf);
+		return false;
+	}
+
+	intel_sdvo_debug_write(intel_sdvo, cmd, args, args_len);
+
+	for (i = 0; i < args_len; i++) {
+		msgs[i].addr = intel_sdvo->slave_addr;
+		msgs[i].flags = 0;
+		msgs[i].len = 2;
+		msgs[i].buf = buf + 2 *i;
+		buf[2*i + 0] = SDVO_I2C_ARG_0 - i;
+		buf[2*i + 1] = ((u8*)args)[i];
+	}
+	msgs[i].addr = intel_sdvo->slave_addr;
+	msgs[i].flags = 0;
+	msgs[i].len = 2;
+	msgs[i].buf = buf + 2*i;
+	buf[2*i + 0] = SDVO_I2C_OPCODE;
+	buf[2*i + 1] = cmd;
+
+	/* the following two are to read the response */
+	status = SDVO_I2C_CMD_STATUS;
+	msgs[i+1].addr = intel_sdvo->slave_addr;
+	msgs[i+1].flags = 0;
+	msgs[i+1].len = 1;
+	msgs[i+1].buf = &status;
+
+	msgs[i+2].addr = intel_sdvo->slave_addr;
+	msgs[i+2].flags = I2C_M_RD;
+	msgs[i+2].len = 1;
+	msgs[i+2].buf = &status;
+
+	if (unlocked)
+		ret = i2c_transfer(intel_sdvo->i2c, msgs, i+3);
+	else
+		ret = __i2c_transfer(intel_sdvo->i2c, msgs, i+3);
+	if (ret < 0) {
+		DRM_DEBUG_KMS("I2c transfer returned %d\n", ret);
+		ret = false;
+		goto out;
+	}
+	if (ret != i+3) {
+		/* failure in I2C transfer */
+		DRM_DEBUG_KMS("I2c transfer returned %d/%d\n", ret, i+3);
+		ret = false;
+	}
+
+out:
+	kfree(msgs);
+	kfree(buf);
+	return ret;
+}
+
+static bool intel_sdvo_write_cmd(struct intel_sdvo *intel_sdvo, u8 cmd,
+				 const void *args, int args_len)
+{
+	return __intel_sdvo_write_cmd(intel_sdvo, cmd, args, args_len, true);
+}
+
+static bool intel_sdvo_read_response(struct intel_sdvo *intel_sdvo,
+				     void *response, int response_len)
+{
+	struct drm_i915_private *dev_priv = to_i915(intel_sdvo->base.base.dev);
+	const char *cmd_status;
+	u8 retry = 15; /* 5 quick checks, followed by 10 long checks */
+	u8 status;
+	int i, pos = 0;
+	char buffer[64];
+
+	buffer[0] = '\0';
+
+	/*
+	 * The documentation states that all commands will be
+	 * processed within 15µs, and that we need only poll
+	 * the status byte a maximum of 3 times in order for the
+	 * command to be complete.
+	 *
+	 * Check 5 times in case the hardware failed to read the docs.
+	 *
+	 * Also beware that the first response by many devices is to
+	 * reply PENDING and stall for time. TVs are notorious for
+	 * requiring longer than specified to complete their replies.
+	 * Originally (in the DDX long ago), the delay was only ever 15ms
+	 * with an additional delay of 30ms applied for TVs added later after
+	 * many experiments. To accommodate both sets of delays, we do a
+	 * sequence of slow checks if the device is falling behind and fails
+	 * to reply within 5*15µs.
+	 */
+	if (!intel_sdvo_read_byte(intel_sdvo,
+				  SDVO_I2C_CMD_STATUS,
+				  &status))
+		goto log_fail;
+
+	while ((status == SDVO_CMD_STATUS_PENDING ||
+		status == SDVO_CMD_STATUS_TARGET_NOT_SPECIFIED) && --retry) {
+		if (retry < 10)
+			msleep(15);
+		else
+			udelay(15);
+
+		if (!intel_sdvo_read_byte(intel_sdvo,
+					  SDVO_I2C_CMD_STATUS,
+					  &status))
+			goto log_fail;
+	}
+
+#define BUF_PRINT(args...) \
+	pos += snprintf(buffer + pos, max_t(int, sizeof(buffer) - pos, 0), args)
+
+	cmd_status = sdvo_cmd_status(status);
+	if (cmd_status)
+		BUF_PRINT("(%s)", cmd_status);
+	else
+		BUF_PRINT("(??? %d)", status);
+
+	if (status != SDVO_CMD_STATUS_SUCCESS)
+		goto log_fail;
+
+	/* Read the command response */
+	for (i = 0; i < response_len; i++) {
+		if (!intel_sdvo_read_byte(intel_sdvo,
+					  SDVO_I2C_RETURN_0 + i,
+					  &((u8 *)response)[i]))
+			goto log_fail;
+		BUF_PRINT(" %02X", ((u8 *)response)[i]);
+	}
+
+	drm_WARN_ON(&dev_priv->drm, pos >= sizeof(buffer) - 1);
+#undef BUF_PRINT
+
+	DRM_DEBUG_KMS("%s: R: %s\n", SDVO_NAME(intel_sdvo), buffer);
+	return true;
+
+log_fail:
+	DRM_DEBUG_KMS("%s: R: ... failed %s\n",
+		      SDVO_NAME(intel_sdvo), buffer);
+	return false;
+}
+
+static int intel_sdvo_get_pixel_multiplier(const struct drm_display_mode *adjusted_mode)
+{
+	if (adjusted_mode->crtc_clock >= 100000)
+		return 1;
+	else if (adjusted_mode->crtc_clock >= 50000)
+		return 2;
+	else
+		return 4;
+}
+
+static bool __intel_sdvo_set_control_bus_switch(struct intel_sdvo *intel_sdvo,
+						u8 ddc_bus)
+{
+	/* This must be the immediately preceding write before the i2c xfer */
+	return __intel_sdvo_write_cmd(intel_sdvo,
+				      SDVO_CMD_SET_CONTROL_BUS_SWITCH,
+				      &ddc_bus, 1, false);
+}
+
+static bool intel_sdvo_set_value(struct intel_sdvo *intel_sdvo, u8 cmd, const void *data, int len)
+{
+	if (!intel_sdvo_write_cmd(intel_sdvo, cmd, data, len))
+		return false;
+
+	return intel_sdvo_read_response(intel_sdvo, NULL, 0);
+}
+
+static bool
+intel_sdvo_get_value(struct intel_sdvo *intel_sdvo, u8 cmd, void *value, int len)
+{
+	if (!intel_sdvo_write_cmd(intel_sdvo, cmd, NULL, 0))
+		return false;
+
+	return intel_sdvo_read_response(intel_sdvo, value, len);
+}
+
+static bool intel_sdvo_set_target_input(struct intel_sdvo *intel_sdvo)
+{
+	struct intel_sdvo_set_target_input_args targets = {0};
+	return intel_sdvo_set_value(intel_sdvo,
+				    SDVO_CMD_SET_TARGET_INPUT,
+				    &targets, sizeof(targets));
+}
+
+/*
+ * Return whether each input is trained.
+ *
+ * This function is making an assumption about the layout of the response,
+ * which should be checked against the docs.
+ */
+static bool intel_sdvo_get_trained_inputs(struct intel_sdvo *intel_sdvo, bool *input_1, bool *input_2)
+{
+	struct intel_sdvo_get_trained_inputs_response response;
+
+	BUILD_BUG_ON(sizeof(response) != 1);
+	if (!intel_sdvo_get_value(intel_sdvo, SDVO_CMD_GET_TRAINED_INPUTS,
+				  &response, sizeof(response)))
+		return false;
+
+	*input_1 = response.input0_trained;
+	*input_2 = response.input1_trained;
+	return true;
+}
+
+static bool intel_sdvo_set_active_outputs(struct intel_sdvo *intel_sdvo,
+					  u16 outputs)
+{
+	return intel_sdvo_set_value(intel_sdvo,
+				    SDVO_CMD_SET_ACTIVE_OUTPUTS,
+				    &outputs, sizeof(outputs));
+}
+
+static bool intel_sdvo_get_active_outputs(struct intel_sdvo *intel_sdvo,
+					  u16 *outputs)
+{
+	return intel_sdvo_get_value(intel_sdvo,
+				    SDVO_CMD_GET_ACTIVE_OUTPUTS,
+				    outputs, sizeof(*outputs));
+}
+
+static bool intel_sdvo_set_encoder_power_state(struct intel_sdvo *intel_sdvo,
+					       int mode)
+{
+	u8 state = SDVO_ENCODER_STATE_ON;
+
+	switch (mode) {
+	case DRM_MODE_DPMS_ON:
+		state = SDVO_ENCODER_STATE_ON;
+		break;
+	case DRM_MODE_DPMS_STANDBY:
+		state = SDVO_ENCODER_STATE_STANDBY;
+		break;
+	case DRM_MODE_DPMS_SUSPEND:
+		state = SDVO_ENCODER_STATE_SUSPEND;
+		break;
+	case DRM_MODE_DPMS_OFF:
+		state = SDVO_ENCODER_STATE_OFF;
+		break;
+	}
+
+	return intel_sdvo_set_value(intel_sdvo,
+				    SDVO_CMD_SET_ENCODER_POWER_STATE, &state, sizeof(state));
+}
+
+static bool intel_sdvo_get_input_pixel_clock_range(struct intel_sdvo *intel_sdvo,
+						   int *clock_min,
+						   int *clock_max)
+{
+	struct intel_sdvo_pixel_clock_range clocks;
+
+	BUILD_BUG_ON(sizeof(clocks) != 4);
+	if (!intel_sdvo_get_value(intel_sdvo,
+				  SDVO_CMD_GET_INPUT_PIXEL_CLOCK_RANGE,
+				  &clocks, sizeof(clocks)))
+		return false;
+
+	/* Convert the values from units of 10 kHz to kHz. */
+	*clock_min = clocks.min * 10;
+	*clock_max = clocks.max * 10;
+	return true;
+}
+
+static bool intel_sdvo_set_target_output(struct intel_sdvo *intel_sdvo,
+					 u16 outputs)
+{
+	return intel_sdvo_set_value(intel_sdvo,
+				    SDVO_CMD_SET_TARGET_OUTPUT,
+				    &outputs, sizeof(outputs));
+}
+
+static bool intel_sdvo_set_timing(struct intel_sdvo *intel_sdvo, u8 cmd,
+				  struct intel_sdvo_dtd *dtd)
+{
+	return intel_sdvo_set_value(intel_sdvo, cmd, &dtd->part1, sizeof(dtd->part1)) &&
+		intel_sdvo_set_value(intel_sdvo, cmd + 1, &dtd->part2, sizeof(dtd->part2));
+}
+
+static bool intel_sdvo_get_timing(struct intel_sdvo *intel_sdvo, u8 cmd,
+				  struct intel_sdvo_dtd *dtd)
+{
+	return intel_sdvo_get_value(intel_sdvo, cmd, &dtd->part1, sizeof(dtd->part1)) &&
+		intel_sdvo_get_value(intel_sdvo, cmd + 1, &dtd->part2, sizeof(dtd->part2));
+}
+
+static bool intel_sdvo_set_input_timing(struct intel_sdvo *intel_sdvo,
+					 struct intel_sdvo_dtd *dtd)
+{
+	return intel_sdvo_set_timing(intel_sdvo,
+				     SDVO_CMD_SET_INPUT_TIMINGS_PART1, dtd);
+}
+
+static bool intel_sdvo_set_output_timing(struct intel_sdvo *intel_sdvo,
+					 struct intel_sdvo_dtd *dtd)
+{
+	return intel_sdvo_set_timing(intel_sdvo,
+				     SDVO_CMD_SET_OUTPUT_TIMINGS_PART1, dtd);
+}
+
+static bool intel_sdvo_get_input_timing(struct intel_sdvo *intel_sdvo,
+					struct intel_sdvo_dtd *dtd)
+{
+	return intel_sdvo_get_timing(intel_sdvo,
+				     SDVO_CMD_GET_INPUT_TIMINGS_PART1, dtd);
+}
+
+static bool
+intel_sdvo_create_preferred_input_timing(struct intel_sdvo *intel_sdvo,
+					 struct intel_sdvo_connector *intel_sdvo_connector,
+					 const struct drm_display_mode *mode)
+{
+	struct intel_sdvo_preferred_input_timing_args args;
+
+	memset(&args, 0, sizeof(args));
+	args.clock = mode->clock / 10;
+	args.width = mode->hdisplay;
+	args.height = mode->vdisplay;
+	args.interlace = 0;
+
+	if (IS_LVDS(intel_sdvo_connector)) {
+		const struct drm_display_mode *fixed_mode =
+			intel_panel_fixed_mode(&intel_sdvo_connector->base, mode);
+
+		if (fixed_mode->hdisplay != args.width ||
+		    fixed_mode->vdisplay != args.height)
+			args.scaled = 1;
+	}
+
+	return intel_sdvo_set_value(intel_sdvo,
+				    SDVO_CMD_CREATE_PREFERRED_INPUT_TIMING,
+				    &args, sizeof(args));
+}
+
+static bool intel_sdvo_get_preferred_input_timing(struct intel_sdvo *intel_sdvo,
+						  struct intel_sdvo_dtd *dtd)
+{
+	BUILD_BUG_ON(sizeof(dtd->part1) != 8);
+	BUILD_BUG_ON(sizeof(dtd->part2) != 8);
+	return intel_sdvo_get_value(intel_sdvo, SDVO_CMD_GET_PREFERRED_INPUT_TIMING_PART1,
+				    &dtd->part1, sizeof(dtd->part1)) &&
+		intel_sdvo_get_value(intel_sdvo, SDVO_CMD_GET_PREFERRED_INPUT_TIMING_PART2,
+				     &dtd->part2, sizeof(dtd->part2));
+}
+
+static bool intel_sdvo_set_clock_rate_mult(struct intel_sdvo *intel_sdvo, u8 val)
+{
+	return intel_sdvo_set_value(intel_sdvo, SDVO_CMD_SET_CLOCK_RATE_MULT, &val, 1);
+}
+
+static void intel_sdvo_get_dtd_from_mode(struct intel_sdvo_dtd *dtd,
+					 const struct drm_display_mode *mode)
+{
+	u16 width, height;
+	u16 h_blank_len, h_sync_len, v_blank_len, v_sync_len;
+	u16 h_sync_offset, v_sync_offset;
+	int mode_clock;
+
+	memset(dtd, 0, sizeof(*dtd));
+
+	width = mode->hdisplay;
+	height = mode->vdisplay;
+
+	/* do some mode translations */
+	h_blank_len = mode->htotal - mode->hdisplay;
+	h_sync_len = mode->hsync_end - mode->hsync_start;
+
+	v_blank_len = mode->vtotal - mode->vdisplay;
+	v_sync_len = mode->vsync_end - mode->vsync_start;
+
+	h_sync_offset = mode->hsync_start - mode->hdisplay;
+	v_sync_offset = mode->vsync_start - mode->vdisplay;
+
+	mode_clock = mode->clock;
+	mode_clock /= 10;
+	dtd->part1.clock = mode_clock;
+
+	dtd->part1.h_active = width & 0xff;
+	dtd->part1.h_blank = h_blank_len & 0xff;
+	dtd->part1.h_high = (((width >> 8) & 0xf) << 4) |
+		((h_blank_len >> 8) & 0xf);
+	dtd->part1.v_active = height & 0xff;
+	dtd->part1.v_blank = v_blank_len & 0xff;
+	dtd->part1.v_high = (((height >> 8) & 0xf) << 4) |
+		((v_blank_len >> 8) & 0xf);
+
+	dtd->part2.h_sync_off = h_sync_offset & 0xff;
+	dtd->part2.h_sync_width = h_sync_len & 0xff;
+	dtd->part2.v_sync_off_width = (v_sync_offset & 0xf) << 4 |
+		(v_sync_len & 0xf);
+	dtd->part2.sync_off_width_high = ((h_sync_offset & 0x300) >> 2) |
+		((h_sync_len & 0x300) >> 4) | ((v_sync_offset & 0x30) >> 2) |
+		((v_sync_len & 0x30) >> 4);
+
+	dtd->part2.dtd_flags = 0x18;
+	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
+		dtd->part2.dtd_flags |= DTD_FLAG_INTERLACE;
+	if (mode->flags & DRM_MODE_FLAG_PHSYNC)
+		dtd->part2.dtd_flags |= DTD_FLAG_HSYNC_POSITIVE;
+	if (mode->flags & DRM_MODE_FLAG_PVSYNC)
+		dtd->part2.dtd_flags |= DTD_FLAG_VSYNC_POSITIVE;
+
+	dtd->part2.v_sync_off_high = v_sync_offset & 0xc0;
+}
+
+static void intel_sdvo_get_mode_from_dtd(struct drm_display_mode *pmode,
+					 const struct intel_sdvo_dtd *dtd)
+{
+	struct drm_display_mode mode = {};
+
+	mode.hdisplay = dtd->part1.h_active;
+	mode.hdisplay += ((dtd->part1.h_high >> 4) & 0x0f) << 8;
+	mode.hsync_start = mode.hdisplay + dtd->part2.h_sync_off;
+	mode.hsync_start += (dtd->part2.sync_off_width_high & 0xc0) << 2;
+	mode.hsync_end = mode.hsync_start + dtd->part2.h_sync_width;
+	mode.hsync_end += (dtd->part2.sync_off_width_high & 0x30) << 4;
+	mode.htotal = mode.hdisplay + dtd->part1.h_blank;
+	mode.htotal += (dtd->part1.h_high & 0xf) << 8;
+
+	mode.vdisplay = dtd->part1.v_active;
+	mode.vdisplay += ((dtd->part1.v_high >> 4) & 0x0f) << 8;
+	mode.vsync_start = mode.vdisplay;
+	mode.vsync_start += (dtd->part2.v_sync_off_width >> 4) & 0xf;
+	mode.vsync_start += (dtd->part2.sync_off_width_high & 0x0c) << 2;
+	mode.vsync_start += dtd->part2.v_sync_off_high & 0xc0;
+	mode.vsync_end = mode.vsync_start +
+		(dtd->part2.v_sync_off_width & 0xf);
+	mode.vsync_end += (dtd->part2.sync_off_width_high & 0x3) << 4;
+	mode.vtotal = mode.vdisplay + dtd->part1.v_blank;
+	mode.vtotal += (dtd->part1.v_high & 0xf) << 8;
+
+	mode.clock = dtd->part1.clock * 10;
+
+	if (dtd->part2.dtd_flags & DTD_FLAG_INTERLACE)
+		mode.flags |= DRM_MODE_FLAG_INTERLACE;
+	if (dtd->part2.dtd_flags & DTD_FLAG_HSYNC_POSITIVE)
+		mode.flags |= DRM_MODE_FLAG_PHSYNC;
+	else
+		mode.flags |= DRM_MODE_FLAG_NHSYNC;
+	if (dtd->part2.dtd_flags & DTD_FLAG_VSYNC_POSITIVE)
+		mode.flags |= DRM_MODE_FLAG_PVSYNC;
+	else
+		mode.flags |= DRM_MODE_FLAG_NVSYNC;
+
+	drm_mode_set_crtcinfo(&mode, 0);
+
+	drm_mode_copy(pmode, &mode);
+}
+
+static bool intel_sdvo_check_supp_encode(struct intel_sdvo *intel_sdvo)
+{
+	struct intel_sdvo_encode encode;
+
+	BUILD_BUG_ON(sizeof(encode) != 2);
+	return intel_sdvo_get_value(intel_sdvo,
+				  SDVO_CMD_GET_SUPP_ENCODE,
+				  &encode, sizeof(encode));
+}
+
+static bool intel_sdvo_set_encode(struct intel_sdvo *intel_sdvo,
+				  u8 mode)
+{
+	return intel_sdvo_set_value(intel_sdvo, SDVO_CMD_SET_ENCODE, &mode, 1);
+}
+
+static bool intel_sdvo_set_colorimetry(struct intel_sdvo *intel_sdvo,
+				       u8 mode)
+{
+	return intel_sdvo_set_value(intel_sdvo, SDVO_CMD_SET_COLORIMETRY, &mode, 1);
+}
+
+static bool intel_sdvo_set_pixel_replication(struct intel_sdvo *intel_sdvo,
+					     u8 pixel_repeat)
+{
+	return intel_sdvo_set_value(intel_sdvo, SDVO_CMD_SET_PIXEL_REPLI,
+				    &pixel_repeat, 1);
+}
+
+static bool intel_sdvo_set_audio_state(struct intel_sdvo *intel_sdvo,
+				       u8 audio_state)
+{
+	return intel_sdvo_set_value(intel_sdvo, SDVO_CMD_SET_AUDIO_STAT,
+				    &audio_state, 1);
+}
+
+static bool intel_sdvo_get_hbuf_size(struct intel_sdvo *intel_sdvo,
+				     u8 *hbuf_size)
+{
+	if (!intel_sdvo_get_value(intel_sdvo, SDVO_CMD_GET_HBUF_INFO,
+				  hbuf_size, 1))
+		return false;
+
+	/* Buffer size is 0 based, hooray! However zero means zero. */
+	if (*hbuf_size)
+		(*hbuf_size)++;
+
+	return true;
+}
+
+#if 0
+static void intel_sdvo_dump_hdmi_buf(struct intel_sdvo *intel_sdvo)
+{
+	int i, j;
+	u8 set_buf_index[2];
+	u8 av_split;
+	u8 buf_size;
+	u8 buf[48];
+	u8 *pos;
+
+	intel_sdvo_get_value(encoder, SDVO_CMD_GET_HBUF_AV_SPLIT, &av_split, 1);
+
+	for (i = 0; i <= av_split; i++) {
+		set_buf_index[0] = i; set_buf_index[1] = 0;
+		intel_sdvo_write_cmd(encoder, SDVO_CMD_SET_HBUF_INDEX,
+				     set_buf_index, 2);
+		intel_sdvo_write_cmd(encoder, SDVO_CMD_GET_HBUF_INFO, NULL, 0);
+		intel_sdvo_read_response(encoder, &buf_size, 1);
+
+		pos = buf;
+		for (j = 0; j <= buf_size; j += 8) {
+			intel_sdvo_write_cmd(encoder, SDVO_CMD_GET_HBUF_DATA,
+					     NULL, 0);
+			intel_sdvo_read_response(encoder, pos, 8);
+			pos += 8;
+		}
+	}
+}
+#endif
+
+static bool intel_sdvo_write_infoframe(struct intel_sdvo *intel_sdvo,
+				       unsigned int if_index, u8 tx_rate,
+				       const u8 *data, unsigned int length)
+{
+	u8 set_buf_index[2] = { if_index, 0 };
+	u8 hbuf_size, tmp[8];
+	int i;
+
+	if (!intel_sdvo_set_value(intel_sdvo,
+				  SDVO_CMD_SET_HBUF_INDEX,
+				  set_buf_index, 2))
+		return false;
+
+	if (!intel_sdvo_get_hbuf_size(intel_sdvo, &hbuf_size))
+		return false;
+
+	DRM_DEBUG_KMS("writing sdvo hbuf: %i, length %u, hbuf_size: %i\n",
+		      if_index, length, hbuf_size);
+
+	if (hbuf_size < length)
+		return false;
+
+	for (i = 0; i < hbuf_size; i += 8) {
+		memset(tmp, 0, 8);
+		if (i < length)
+			memcpy(tmp, data + i, min_t(unsigned, 8, length - i));
+
+		if (!intel_sdvo_set_value(intel_sdvo,
+					  SDVO_CMD_SET_HBUF_DATA,
+					  tmp, 8))
+			return false;
+	}
+
+	return intel_sdvo_set_value(intel_sdvo,
+				    SDVO_CMD_SET_HBUF_TXRATE,
+				    &tx_rate, 1);
+}
+
+static ssize_t intel_sdvo_read_infoframe(struct intel_sdvo *intel_sdvo,
+					 unsigned int if_index,
+					 u8 *data, unsigned int length)
+{
+	u8 set_buf_index[2] = { if_index, 0 };
+	u8 hbuf_size, tx_rate, av_split;
+	int i;
+
+	if (!intel_sdvo_get_value(intel_sdvo,
+				  SDVO_CMD_GET_HBUF_AV_SPLIT,
+				  &av_split, 1))
+		return -ENXIO;
+
+	if (av_split < if_index)
+		return 0;
+
+	if (!intel_sdvo_set_value(intel_sdvo,
+				  SDVO_CMD_SET_HBUF_INDEX,
+				  set_buf_index, 2))
+		return -ENXIO;
+
+	if (!intel_sdvo_get_value(intel_sdvo,
+				  SDVO_CMD_GET_HBUF_TXRATE,
+				  &tx_rate, 1))
+		return -ENXIO;
+
+	if (tx_rate == SDVO_HBUF_TX_DISABLED)
+		return 0;
+
+	if (!intel_sdvo_get_hbuf_size(intel_sdvo, &hbuf_size))
+		return false;
+
+	DRM_DEBUG_KMS("reading sdvo hbuf: %i, length %u, hbuf_size: %i\n",
+		      if_index, length, hbuf_size);
+
+	hbuf_size = min_t(unsigned int, length, hbuf_size);
+
+	for (i = 0; i < hbuf_size; i += 8) {
+		if (!intel_sdvo_write_cmd(intel_sdvo, SDVO_CMD_GET_HBUF_DATA, NULL, 0))
+			return -ENXIO;
+		if (!intel_sdvo_read_response(intel_sdvo, &data[i],
+					      min_t(unsigned int, 8, hbuf_size - i)))
+			return -ENXIO;
+	}
+
+	return hbuf_size;
+}
+
+static bool intel_sdvo_compute_avi_infoframe(struct intel_sdvo *intel_sdvo,
+					     struct intel_crtc_state *crtc_state,
+					     struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(intel_sdvo->base.base.dev);
+	struct hdmi_avi_infoframe *frame = &crtc_state->infoframes.avi.avi;
+	const struct drm_display_mode *adjusted_mode =
+		&crtc_state->hw.adjusted_mode;
+	int ret;
+
+	if (!crtc_state->has_hdmi_sink)
+		return true;
+
+	crtc_state->infoframes.enable |=
+		intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_AVI);
+
+	ret = drm_hdmi_avi_infoframe_from_display_mode(frame,
+						       conn_state->connector,
+						       adjusted_mode);
+	if (ret)
+		return false;
+
+	drm_hdmi_avi_infoframe_quant_range(frame,
+					   conn_state->connector,
+					   adjusted_mode,
+					   crtc_state->limited_color_range ?
+					   HDMI_QUANTIZATION_RANGE_LIMITED :
+					   HDMI_QUANTIZATION_RANGE_FULL);
+
+	ret = hdmi_avi_infoframe_check(frame);
+	if (drm_WARN_ON(&dev_priv->drm, ret))
+		return false;
+
+	return true;
+}
+
+static bool intel_sdvo_set_avi_infoframe(struct intel_sdvo *intel_sdvo,
+					 const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(intel_sdvo->base.base.dev);
+	u8 sdvo_data[HDMI_INFOFRAME_SIZE(AVI)];
+	const union hdmi_infoframe *frame = &crtc_state->infoframes.avi;
+	ssize_t len;
+
+	if ((crtc_state->infoframes.enable &
+	     intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_AVI)) == 0)
+		return true;
+
+	if (drm_WARN_ON(&dev_priv->drm,
+			frame->any.type != HDMI_INFOFRAME_TYPE_AVI))
+		return false;
+
+	len = hdmi_infoframe_pack_only(frame, sdvo_data, sizeof(sdvo_data));
+	if (drm_WARN_ON(&dev_priv->drm, len < 0))
+		return false;
+
+	return intel_sdvo_write_infoframe(intel_sdvo, SDVO_HBUF_INDEX_AVI_IF,
+					  SDVO_HBUF_TX_VSYNC,
+					  sdvo_data, len);
+}
+
+static void intel_sdvo_get_avi_infoframe(struct intel_sdvo *intel_sdvo,
+					 struct intel_crtc_state *crtc_state)
+{
+	u8 sdvo_data[HDMI_INFOFRAME_SIZE(AVI)];
+	union hdmi_infoframe *frame = &crtc_state->infoframes.avi;
+	ssize_t len;
+	int ret;
+
+	if (!crtc_state->has_hdmi_sink)
+		return;
+
+	len = intel_sdvo_read_infoframe(intel_sdvo, SDVO_HBUF_INDEX_AVI_IF,
+					sdvo_data, sizeof(sdvo_data));
+	if (len < 0) {
+		DRM_DEBUG_KMS("failed to read AVI infoframe\n");
+		return;
+	} else if (len == 0) {
+		return;
+	}
+
+	crtc_state->infoframes.enable |=
+		intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_AVI);
+
+	ret = hdmi_infoframe_unpack(frame, sdvo_data, len);
+	if (ret) {
+		DRM_DEBUG_KMS("Failed to unpack AVI infoframe\n");
+		return;
+	}
+
+	if (frame->any.type != HDMI_INFOFRAME_TYPE_AVI)
+		DRM_DEBUG_KMS("Found the wrong infoframe type 0x%x (expected 0x%02x)\n",
+			      frame->any.type, HDMI_INFOFRAME_TYPE_AVI);
+}
+
+static bool intel_sdvo_set_tv_format(struct intel_sdvo *intel_sdvo,
+				     const struct drm_connector_state *conn_state)
+{
+	struct intel_sdvo_tv_format format;
+	u32 format_map;
+
+	format_map = 1 << conn_state->tv.mode;
+	memset(&format, 0, sizeof(format));
+	memcpy(&format, &format_map, min(sizeof(format), sizeof(format_map)));
+
+	BUILD_BUG_ON(sizeof(format) != 6);
+	return intel_sdvo_set_value(intel_sdvo,
+				    SDVO_CMD_SET_TV_FORMAT,
+				    &format, sizeof(format));
+}
+
+static bool
+intel_sdvo_set_output_timings_from_mode(struct intel_sdvo *intel_sdvo,
+					const struct drm_display_mode *mode)
+{
+	struct intel_sdvo_dtd output_dtd;
+
+	if (!intel_sdvo_set_target_output(intel_sdvo,
+					  intel_sdvo->attached_output))
+		return false;
+
+	intel_sdvo_get_dtd_from_mode(&output_dtd, mode);
+	if (!intel_sdvo_set_output_timing(intel_sdvo, &output_dtd))
+		return false;
+
+	return true;
+}
+
+/*
+ * Asks the sdvo controller for the preferred input mode given the output mode.
+ * Unfortunately we have to set up the full output mode to do that.
+ */
+static bool
+intel_sdvo_get_preferred_input_mode(struct intel_sdvo *intel_sdvo,
+				    struct intel_sdvo_connector *intel_sdvo_connector,
+				    const struct drm_display_mode *mode,
+				    struct drm_display_mode *adjusted_mode)
+{
+	struct intel_sdvo_dtd input_dtd;
+
+	/* Reset the input timing to the screen. Assume always input 0. */
+	if (!intel_sdvo_set_target_input(intel_sdvo))
+		return false;
+
+	if (!intel_sdvo_create_preferred_input_timing(intel_sdvo,
+						      intel_sdvo_connector,
+						      mode))
+		return false;
+
+	if (!intel_sdvo_get_preferred_input_timing(intel_sdvo,
+						   &input_dtd))
+		return false;
+
+	intel_sdvo_get_mode_from_dtd(adjusted_mode, &input_dtd);
+	intel_sdvo->dtd_sdvo_flags = input_dtd.part2.sdvo_flags;
+
+	return true;
+}
+
+static void i9xx_adjust_sdvo_tv_clock(struct intel_crtc_state *pipe_config)
+{
+	struct drm_i915_private *dev_priv = to_i915(pipe_config->uapi.crtc->dev);
+	unsigned dotclock = pipe_config->port_clock;
+	struct dpll *clock = &pipe_config->dpll;
+
+	/*
+	 * SDVO TV has fixed PLL values depend on its clock range,
+	 * this mirrors vbios setting.
+	 */
+	if (dotclock >= 100000 && dotclock < 140500) {
+		clock->p1 = 2;
+		clock->p2 = 10;
+		clock->n = 3;
+		clock->m1 = 16;
+		clock->m2 = 8;
+	} else if (dotclock >= 140500 && dotclock <= 200000) {
+		clock->p1 = 1;
+		clock->p2 = 10;
+		clock->n = 6;
+		clock->m1 = 12;
+		clock->m2 = 8;
+	} else {
+		drm_WARN(&dev_priv->drm, 1,
+			 "SDVO TV clock out of range: %i\n", dotclock);
+	}
+
+	pipe_config->clock_set = true;
+}
+
+static bool intel_has_hdmi_sink(struct intel_sdvo_connector *intel_sdvo_connector,
+				const struct drm_connector_state *conn_state)
+{
+	struct drm_connector *connector = conn_state->connector;
+
+	return intel_sdvo_connector->is_hdmi &&
+		connector->display_info.is_hdmi &&
+		READ_ONCE(to_intel_digital_connector_state(conn_state)->force_audio) != HDMI_AUDIO_OFF_DVI;
+}
+
+static bool intel_sdvo_limited_color_range(struct intel_encoder *encoder,
+					   const struct intel_crtc_state *crtc_state,
+					   const struct drm_connector_state *conn_state)
+{
+	struct intel_sdvo *intel_sdvo = to_sdvo(encoder);
+
+	if ((intel_sdvo->colorimetry_cap & SDVO_COLORIMETRY_RGB220) == 0)
+		return false;
+
+	return intel_hdmi_limited_color_range(crtc_state, conn_state);
+}
+
+static int intel_sdvo_compute_config(struct intel_encoder *encoder,
+				     struct intel_crtc_state *pipe_config,
+				     struct drm_connector_state *conn_state)
+{
+	struct intel_sdvo *intel_sdvo = to_sdvo(encoder);
+	struct intel_sdvo_connector_state *intel_sdvo_state =
+		to_intel_sdvo_connector_state(conn_state);
+	struct intel_sdvo_connector *intel_sdvo_connector =
+		to_intel_sdvo_connector(conn_state->connector);
+	struct drm_display_mode *adjusted_mode = &pipe_config->hw.adjusted_mode;
+	struct drm_display_mode *mode = &pipe_config->hw.mode;
+
+	DRM_DEBUG_KMS("forcing bpc to 8 for SDVO\n");
+	pipe_config->pipe_bpp = 8*3;
+	pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
+
+	if (HAS_PCH_SPLIT(to_i915(encoder->base.dev)))
+		pipe_config->has_pch_encoder = true;
+
+	/*
+	 * We need to construct preferred input timings based on our
+	 * output timings.  To do that, we have to set the output
+	 * timings, even though this isn't really the right place in
+	 * the sequence to do it. Oh well.
+	 */
+	if (IS_TV(intel_sdvo_connector)) {
+		if (!intel_sdvo_set_output_timings_from_mode(intel_sdvo, mode))
+			return -EINVAL;
+
+		(void) intel_sdvo_get_preferred_input_mode(intel_sdvo,
+							   intel_sdvo_connector,
+							   mode,
+							   adjusted_mode);
+		pipe_config->sdvo_tv_clock = true;
+	} else if (IS_LVDS(intel_sdvo_connector)) {
+		const struct drm_display_mode *fixed_mode =
+			intel_panel_fixed_mode(&intel_sdvo_connector->base, mode);
+		int ret;
+
+		ret = intel_panel_compute_config(&intel_sdvo_connector->base,
+						 adjusted_mode);
+		if (ret)
+			return ret;
+
+		if (!intel_sdvo_set_output_timings_from_mode(intel_sdvo, fixed_mode))
+			return -EINVAL;
+
+		(void) intel_sdvo_get_preferred_input_mode(intel_sdvo,
+							   intel_sdvo_connector,
+							   mode,
+							   adjusted_mode);
+	}
+
+	if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)
+		return -EINVAL;
+
+	/*
+	 * Make the CRTC code factor in the SDVO pixel multiplier.  The
+	 * SDVO device will factor out the multiplier during mode_set.
+	 */
+	pipe_config->pixel_multiplier =
+		intel_sdvo_get_pixel_multiplier(adjusted_mode);
+
+	pipe_config->has_hdmi_sink = intel_has_hdmi_sink(intel_sdvo_connector, conn_state);
+
+	if (pipe_config->has_hdmi_sink) {
+		if (intel_sdvo_state->base.force_audio == HDMI_AUDIO_AUTO)
+			pipe_config->has_audio = intel_sdvo->has_hdmi_audio;
+		else
+			pipe_config->has_audio =
+				intel_sdvo_state->base.force_audio == HDMI_AUDIO_ON;
+	}
+
+	pipe_config->limited_color_range =
+		intel_sdvo_limited_color_range(encoder, pipe_config,
+					       conn_state);
+
+	/* Clock computation needs to happen after pixel multiplier. */
+	if (IS_TV(intel_sdvo_connector))
+		i9xx_adjust_sdvo_tv_clock(pipe_config);
+
+	if (conn_state->picture_aspect_ratio)
+		adjusted_mode->picture_aspect_ratio =
+			conn_state->picture_aspect_ratio;
+
+	if (!intel_sdvo_compute_avi_infoframe(intel_sdvo,
+					      pipe_config, conn_state)) {
+		DRM_DEBUG_KMS("bad AVI infoframe\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+#define UPDATE_PROPERTY(input, NAME) \
+	do { \
+		val = input; \
+		intel_sdvo_set_value(intel_sdvo, SDVO_CMD_SET_##NAME, &val, sizeof(val)); \
+	} while (0)
+
+static void intel_sdvo_update_props(struct intel_sdvo *intel_sdvo,
+				    const struct intel_sdvo_connector_state *sdvo_state)
+{
+	const struct drm_connector_state *conn_state = &sdvo_state->base.base;
+	struct intel_sdvo_connector *intel_sdvo_conn =
+		to_intel_sdvo_connector(conn_state->connector);
+	u16 val;
+
+	if (intel_sdvo_conn->left)
+		UPDATE_PROPERTY(sdvo_state->tv.overscan_h, OVERSCAN_H);
+
+	if (intel_sdvo_conn->top)
+		UPDATE_PROPERTY(sdvo_state->tv.overscan_v, OVERSCAN_V);
+
+	if (intel_sdvo_conn->hpos)
+		UPDATE_PROPERTY(sdvo_state->tv.hpos, HPOS);
+
+	if (intel_sdvo_conn->vpos)
+		UPDATE_PROPERTY(sdvo_state->tv.vpos, VPOS);
+
+	if (intel_sdvo_conn->saturation)
+		UPDATE_PROPERTY(conn_state->tv.saturation, SATURATION);
+
+	if (intel_sdvo_conn->contrast)
+		UPDATE_PROPERTY(conn_state->tv.contrast, CONTRAST);
+
+	if (intel_sdvo_conn->hue)
+		UPDATE_PROPERTY(conn_state->tv.hue, HUE);
+
+	if (intel_sdvo_conn->brightness)
+		UPDATE_PROPERTY(conn_state->tv.brightness, BRIGHTNESS);
+
+	if (intel_sdvo_conn->sharpness)
+		UPDATE_PROPERTY(sdvo_state->tv.sharpness, SHARPNESS);
+
+	if (intel_sdvo_conn->flicker_filter)
+		UPDATE_PROPERTY(sdvo_state->tv.flicker_filter, FLICKER_FILTER);
+
+	if (intel_sdvo_conn->flicker_filter_2d)
+		UPDATE_PROPERTY(sdvo_state->tv.flicker_filter_2d, FLICKER_FILTER_2D);
+
+	if (intel_sdvo_conn->flicker_filter_adaptive)
+		UPDATE_PROPERTY(sdvo_state->tv.flicker_filter_adaptive, FLICKER_FILTER_ADAPTIVE);
+
+	if (intel_sdvo_conn->tv_chroma_filter)
+		UPDATE_PROPERTY(sdvo_state->tv.chroma_filter, TV_CHROMA_FILTER);
+
+	if (intel_sdvo_conn->tv_luma_filter)
+		UPDATE_PROPERTY(sdvo_state->tv.luma_filter, TV_LUMA_FILTER);
+
+	if (intel_sdvo_conn->dot_crawl)
+		UPDATE_PROPERTY(sdvo_state->tv.dot_crawl, DOT_CRAWL);
+
+#undef UPDATE_PROPERTY
+}
+
+static void intel_sdvo_pre_enable(struct intel_atomic_state *state,
+				  struct intel_encoder *intel_encoder,
+				  const struct intel_crtc_state *crtc_state,
+				  const struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(intel_encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	const struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode;
+	const struct intel_sdvo_connector_state *sdvo_state =
+		to_intel_sdvo_connector_state(conn_state);
+	struct intel_sdvo_connector *intel_sdvo_connector =
+		to_intel_sdvo_connector(conn_state->connector);
+	const struct drm_display_mode *mode = &crtc_state->hw.mode;
+	struct intel_sdvo *intel_sdvo = to_sdvo(intel_encoder);
+	u32 sdvox;
+	struct intel_sdvo_in_out_map in_out;
+	struct intel_sdvo_dtd input_dtd, output_dtd;
+	int rate;
+
+	intel_sdvo_update_props(intel_sdvo, sdvo_state);
+
+	/*
+	 * First, set the input mapping for the first input to our controlled
+	 * output. This is only correct if we're a single-input device, in
+	 * which case the first input is the output from the appropriate SDVO
+	 * channel on the motherboard.  In a two-input device, the first input
+	 * will be SDVOB and the second SDVOC.
+	 */
+	in_out.in0 = intel_sdvo->attached_output;
+	in_out.in1 = 0;
+
+	intel_sdvo_set_value(intel_sdvo,
+			     SDVO_CMD_SET_IN_OUT_MAP,
+			     &in_out, sizeof(in_out));
+
+	/* Set the output timings to the screen */
+	if (!intel_sdvo_set_target_output(intel_sdvo,
+					  intel_sdvo->attached_output))
+		return;
+
+	/* lvds has a special fixed output timing. */
+	if (IS_LVDS(intel_sdvo_connector)) {
+		const struct drm_display_mode *fixed_mode =
+			intel_panel_fixed_mode(&intel_sdvo_connector->base, mode);
+
+		intel_sdvo_get_dtd_from_mode(&output_dtd, fixed_mode);
+	} else {
+		intel_sdvo_get_dtd_from_mode(&output_dtd, mode);
+	}
+	if (!intel_sdvo_set_output_timing(intel_sdvo, &output_dtd))
+		drm_info(&dev_priv->drm,
+			 "Setting output timings on %s failed\n",
+			 SDVO_NAME(intel_sdvo));
+
+	/* Set the input timing to the screen. Assume always input 0. */
+	if (!intel_sdvo_set_target_input(intel_sdvo))
+		return;
+
+	if (crtc_state->has_hdmi_sink) {
+		intel_sdvo_set_encode(intel_sdvo, SDVO_ENCODE_HDMI);
+		intel_sdvo_set_colorimetry(intel_sdvo,
+					   crtc_state->limited_color_range ?
+					   SDVO_COLORIMETRY_RGB220 :
+					   SDVO_COLORIMETRY_RGB256);
+		intel_sdvo_set_avi_infoframe(intel_sdvo, crtc_state);
+		intel_sdvo_set_pixel_replication(intel_sdvo,
+						 !!(adjusted_mode->flags &
+						    DRM_MODE_FLAG_DBLCLK));
+	} else
+		intel_sdvo_set_encode(intel_sdvo, SDVO_ENCODE_DVI);
+
+	if (IS_TV(intel_sdvo_connector) &&
+	    !intel_sdvo_set_tv_format(intel_sdvo, conn_state))
+		return;
+
+	intel_sdvo_get_dtd_from_mode(&input_dtd, adjusted_mode);
+
+	if (IS_TV(intel_sdvo_connector) || IS_LVDS(intel_sdvo_connector))
+		input_dtd.part2.sdvo_flags = intel_sdvo->dtd_sdvo_flags;
+	if (!intel_sdvo_set_input_timing(intel_sdvo, &input_dtd))
+		drm_info(&dev_priv->drm,
+			 "Setting input timings on %s failed\n",
+			 SDVO_NAME(intel_sdvo));
+
+	switch (crtc_state->pixel_multiplier) {
+	default:
+		drm_WARN(&dev_priv->drm, 1,
+			 "unknown pixel multiplier specified\n");
+		fallthrough;
+	case 1: rate = SDVO_CLOCK_RATE_MULT_1X; break;
+	case 2: rate = SDVO_CLOCK_RATE_MULT_2X; break;
+	case 4: rate = SDVO_CLOCK_RATE_MULT_4X; break;
+	}
+	if (!intel_sdvo_set_clock_rate_mult(intel_sdvo, rate))
+		return;
+
+	/* Set the SDVO control regs. */
+	if (DISPLAY_VER(dev_priv) >= 4) {
+		/* The real mode polarity is set by the SDVO commands, using
+		 * struct intel_sdvo_dtd. */
+		sdvox = SDVO_VSYNC_ACTIVE_HIGH | SDVO_HSYNC_ACTIVE_HIGH;
+		if (DISPLAY_VER(dev_priv) < 5)
+			sdvox |= SDVO_BORDER_ENABLE;
+	} else {
+		sdvox = intel_de_read(dev_priv, intel_sdvo->sdvo_reg);
+		if (intel_sdvo->port == PORT_B)
+			sdvox &= SDVOB_PRESERVE_MASK;
+		else
+			sdvox &= SDVOC_PRESERVE_MASK;
+		sdvox |= (9 << 19) | SDVO_BORDER_ENABLE;
+	}
+
+	if (HAS_PCH_CPT(dev_priv))
+		sdvox |= SDVO_PIPE_SEL_CPT(crtc->pipe);
+	else
+		sdvox |= SDVO_PIPE_SEL(crtc->pipe);
+
+	if (DISPLAY_VER(dev_priv) >= 4) {
+		/* done in crtc_mode_set as the dpll_md reg must be written early */
+	} else if (IS_I945G(dev_priv) || IS_I945GM(dev_priv) ||
+		   IS_G33(dev_priv) || IS_PINEVIEW(dev_priv)) {
+		/* done in crtc_mode_set as it lives inside the dpll register */
+	} else {
+		sdvox |= (crtc_state->pixel_multiplier - 1)
+			<< SDVO_PORT_MULTIPLY_SHIFT;
+	}
+
+	if (input_dtd.part2.sdvo_flags & SDVO_NEED_TO_STALL &&
+	    DISPLAY_VER(dev_priv) < 5)
+		sdvox |= SDVO_STALL_SELECT;
+	intel_sdvo_write_sdvox(intel_sdvo, sdvox);
+}
+
+static bool intel_sdvo_connector_get_hw_state(struct intel_connector *connector)
+{
+	struct intel_sdvo_connector *intel_sdvo_connector =
+		to_intel_sdvo_connector(&connector->base);
+	struct intel_sdvo *intel_sdvo = intel_attached_sdvo(connector);
+	u16 active_outputs = 0;
+
+	intel_sdvo_get_active_outputs(intel_sdvo, &active_outputs);
+
+	return active_outputs & intel_sdvo_connector->output_flag;
+}
+
+bool intel_sdvo_port_enabled(struct drm_i915_private *dev_priv,
+			     i915_reg_t sdvo_reg, enum pipe *pipe)
+{
+	u32 val;
+
+	val = intel_de_read(dev_priv, sdvo_reg);
+
+	/* asserts want to know the pipe even if the port is disabled */
+	if (HAS_PCH_CPT(dev_priv))
+		*pipe = (val & SDVO_PIPE_SEL_MASK_CPT) >> SDVO_PIPE_SEL_SHIFT_CPT;
+	else if (IS_CHERRYVIEW(dev_priv))
+		*pipe = (val & SDVO_PIPE_SEL_MASK_CHV) >> SDVO_PIPE_SEL_SHIFT_CHV;
+	else
+		*pipe = (val & SDVO_PIPE_SEL_MASK) >> SDVO_PIPE_SEL_SHIFT;
+
+	return val & SDVO_ENABLE;
+}
+
+static bool intel_sdvo_get_hw_state(struct intel_encoder *encoder,
+				    enum pipe *pipe)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_sdvo *intel_sdvo = to_sdvo(encoder);
+	u16 active_outputs = 0;
+	bool ret;
+
+	intel_sdvo_get_active_outputs(intel_sdvo, &active_outputs);
+
+	ret = intel_sdvo_port_enabled(dev_priv, intel_sdvo->sdvo_reg, pipe);
+
+	return ret || active_outputs;
+}
+
+static void intel_sdvo_get_config(struct intel_encoder *encoder,
+				  struct intel_crtc_state *pipe_config)
+{
+	struct drm_device *dev = encoder->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_sdvo *intel_sdvo = to_sdvo(encoder);
+	struct intel_sdvo_dtd dtd;
+	int encoder_pixel_multiplier = 0;
+	int dotclock;
+	u32 flags = 0, sdvox;
+	u8 val;
+	bool ret;
+
+	pipe_config->output_types |= BIT(INTEL_OUTPUT_SDVO);
+
+	sdvox = intel_de_read(dev_priv, intel_sdvo->sdvo_reg);
+
+	ret = intel_sdvo_get_input_timing(intel_sdvo, &dtd);
+	if (!ret) {
+		/*
+		 * Some sdvo encoders are not spec compliant and don't
+		 * implement the mandatory get_timings function.
+		 */
+		drm_dbg(&dev_priv->drm, "failed to retrieve SDVO DTD\n");
+		pipe_config->quirks |= PIPE_CONFIG_QUIRK_MODE_SYNC_FLAGS;
+	} else {
+		if (dtd.part2.dtd_flags & DTD_FLAG_HSYNC_POSITIVE)
+			flags |= DRM_MODE_FLAG_PHSYNC;
+		else
+			flags |= DRM_MODE_FLAG_NHSYNC;
+
+		if (dtd.part2.dtd_flags & DTD_FLAG_VSYNC_POSITIVE)
+			flags |= DRM_MODE_FLAG_PVSYNC;
+		else
+			flags |= DRM_MODE_FLAG_NVSYNC;
+	}
+
+	pipe_config->hw.adjusted_mode.flags |= flags;
+
+	/*
+	 * pixel multiplier readout is tricky: Only on i915g/gm it is stored in
+	 * the sdvo port register, on all other platforms it is part of the dpll
+	 * state. Since the general pipe state readout happens before the
+	 * encoder->get_config we so already have a valid pixel multplier on all
+	 * other platfroms.
+	 */
+	if (IS_I915G(dev_priv) || IS_I915GM(dev_priv)) {
+		pipe_config->pixel_multiplier =
+			((sdvox & SDVO_PORT_MULTIPLY_MASK)
+			 >> SDVO_PORT_MULTIPLY_SHIFT) + 1;
+	}
+
+	dotclock = pipe_config->port_clock;
+
+	if (pipe_config->pixel_multiplier)
+		dotclock /= pipe_config->pixel_multiplier;
+
+	pipe_config->hw.adjusted_mode.crtc_clock = dotclock;
+
+	/* Cross check the port pixel multiplier with the sdvo encoder state. */
+	if (intel_sdvo_get_value(intel_sdvo, SDVO_CMD_GET_CLOCK_RATE_MULT,
+				 &val, 1)) {
+		switch (val) {
+		case SDVO_CLOCK_RATE_MULT_1X:
+			encoder_pixel_multiplier = 1;
+			break;
+		case SDVO_CLOCK_RATE_MULT_2X:
+			encoder_pixel_multiplier = 2;
+			break;
+		case SDVO_CLOCK_RATE_MULT_4X:
+			encoder_pixel_multiplier = 4;
+			break;
+		}
+	}
+
+	drm_WARN(dev,
+		 encoder_pixel_multiplier != pipe_config->pixel_multiplier,
+		 "SDVO pixel multiplier mismatch, port: %i, encoder: %i\n",
+		 pipe_config->pixel_multiplier, encoder_pixel_multiplier);
+
+	if (intel_sdvo_get_value(intel_sdvo, SDVO_CMD_GET_COLORIMETRY,
+				 &val, 1)) {
+		if (val == SDVO_COLORIMETRY_RGB220)
+			pipe_config->limited_color_range = true;
+	}
+
+	if (intel_sdvo_get_value(intel_sdvo, SDVO_CMD_GET_AUDIO_STAT,
+				 &val, 1)) {
+		u8 mask = SDVO_AUDIO_ELD_VALID | SDVO_AUDIO_PRESENCE_DETECT;
+
+		if ((val & mask) == mask)
+			pipe_config->has_audio = true;
+	}
+
+	if (intel_sdvo_get_value(intel_sdvo, SDVO_CMD_GET_ENCODE,
+				 &val, 1)) {
+		if (val == SDVO_ENCODE_HDMI)
+			pipe_config->has_hdmi_sink = true;
+	}
+
+	intel_sdvo_get_avi_infoframe(intel_sdvo, pipe_config);
+}
+
+static void intel_sdvo_disable_audio(struct intel_sdvo *intel_sdvo)
+{
+	intel_sdvo_set_audio_state(intel_sdvo, 0);
+}
+
+static void intel_sdvo_enable_audio(struct intel_sdvo *intel_sdvo,
+				    const struct intel_crtc_state *crtc_state,
+				    const struct drm_connector_state *conn_state)
+{
+	const struct drm_display_mode *adjusted_mode =
+		&crtc_state->hw.adjusted_mode;
+	struct drm_connector *connector = conn_state->connector;
+	u8 *eld = connector->eld;
+
+	eld[6] = drm_av_sync_delay(connector, adjusted_mode) / 2;
+
+	intel_sdvo_set_audio_state(intel_sdvo, 0);
+
+	intel_sdvo_write_infoframe(intel_sdvo, SDVO_HBUF_INDEX_ELD,
+				   SDVO_HBUF_TX_DISABLED,
+				   eld, drm_eld_size(eld));
+
+	intel_sdvo_set_audio_state(intel_sdvo, SDVO_AUDIO_ELD_VALID |
+				   SDVO_AUDIO_PRESENCE_DETECT);
+}
+
+static void intel_disable_sdvo(struct intel_atomic_state *state,
+			       struct intel_encoder *encoder,
+			       const struct intel_crtc_state *old_crtc_state,
+			       const struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_sdvo *intel_sdvo = to_sdvo(encoder);
+	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
+	u32 temp;
+
+	if (old_crtc_state->has_audio)
+		intel_sdvo_disable_audio(intel_sdvo);
+
+	intel_sdvo_set_active_outputs(intel_sdvo, 0);
+	if (0)
+		intel_sdvo_set_encoder_power_state(intel_sdvo,
+						   DRM_MODE_DPMS_OFF);
+
+	temp = intel_de_read(dev_priv, intel_sdvo->sdvo_reg);
+
+	temp &= ~SDVO_ENABLE;
+	intel_sdvo_write_sdvox(intel_sdvo, temp);
+
+	/*
+	 * HW workaround for IBX, we need to move the port
+	 * to transcoder A after disabling it to allow the
+	 * matching DP port to be enabled on transcoder A.
+	 */
+	if (HAS_PCH_IBX(dev_priv) && crtc->pipe == PIPE_B) {
+		/*
+		 * We get CPU/PCH FIFO underruns on the other pipe when
+		 * doing the workaround. Sweep them under the rug.
+		 */
+		intel_set_cpu_fifo_underrun_reporting(dev_priv, PIPE_A, false);
+		intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, false);
+
+		temp &= ~SDVO_PIPE_SEL_MASK;
+		temp |= SDVO_ENABLE | SDVO_PIPE_SEL(PIPE_A);
+		intel_sdvo_write_sdvox(intel_sdvo, temp);
+
+		temp &= ~SDVO_ENABLE;
+		intel_sdvo_write_sdvox(intel_sdvo, temp);
+
+		intel_wait_for_vblank_if_active(dev_priv, PIPE_A);
+		intel_set_cpu_fifo_underrun_reporting(dev_priv, PIPE_A, true);
+		intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, true);
+	}
+}
+
+static void pch_disable_sdvo(struct intel_atomic_state *state,
+			     struct intel_encoder *encoder,
+			     const struct intel_crtc_state *old_crtc_state,
+			     const struct drm_connector_state *old_conn_state)
+{
+}
+
+static void pch_post_disable_sdvo(struct intel_atomic_state *state,
+				  struct intel_encoder *encoder,
+				  const struct intel_crtc_state *old_crtc_state,
+				  const struct drm_connector_state *old_conn_state)
+{
+	intel_disable_sdvo(state, encoder, old_crtc_state, old_conn_state);
+}
+
+static void intel_enable_sdvo(struct intel_atomic_state *state,
+			      struct intel_encoder *encoder,
+			      const struct intel_crtc_state *pipe_config,
+			      const struct drm_connector_state *conn_state)
+{
+	struct drm_device *dev = encoder->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_sdvo *intel_sdvo = to_sdvo(encoder);
+	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+	u32 temp;
+	bool input1, input2;
+	int i;
+	bool success;
+
+	temp = intel_de_read(dev_priv, intel_sdvo->sdvo_reg);
+	temp |= SDVO_ENABLE;
+	intel_sdvo_write_sdvox(intel_sdvo, temp);
+
+	for (i = 0; i < 2; i++)
+		intel_crtc_wait_for_next_vblank(crtc);
+
+	success = intel_sdvo_get_trained_inputs(intel_sdvo, &input1, &input2);
+	/*
+	 * Warn if the device reported failure to sync.
+	 *
+	 * A lot of SDVO devices fail to notify of sync, but it's
+	 * a given it the status is a success, we succeeded.
+	 */
+	if (success && !input1) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "First %s output reported failure to "
+			    "sync\n", SDVO_NAME(intel_sdvo));
+	}
+
+	if (0)
+		intel_sdvo_set_encoder_power_state(intel_sdvo,
+						   DRM_MODE_DPMS_ON);
+	intel_sdvo_set_active_outputs(intel_sdvo, intel_sdvo->attached_output);
+
+	if (pipe_config->has_audio)
+		intel_sdvo_enable_audio(intel_sdvo, pipe_config, conn_state);
+}
+
+static enum drm_mode_status
+intel_sdvo_mode_valid(struct drm_connector *connector,
+		      struct drm_display_mode *mode)
+{
+	struct drm_i915_private *i915 = to_i915(connector->dev);
+	struct intel_sdvo *intel_sdvo = intel_attached_sdvo(to_intel_connector(connector));
+	struct intel_sdvo_connector *intel_sdvo_connector =
+		to_intel_sdvo_connector(connector);
+	bool has_hdmi_sink = intel_has_hdmi_sink(intel_sdvo_connector, connector->state);
+	int max_dotclk = i915->max_dotclk_freq;
+	enum drm_mode_status status;
+	int clock = mode->clock;
+
+	status = intel_cpu_transcoder_mode_valid(i915, mode);
+	if (status != MODE_OK)
+		return status;
+
+	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
+		return MODE_NO_DBLESCAN;
+
+	if (clock > max_dotclk)
+		return MODE_CLOCK_HIGH;
+
+	if (mode->flags & DRM_MODE_FLAG_DBLCLK) {
+		if (!has_hdmi_sink)
+			return MODE_CLOCK_LOW;
+		clock *= 2;
+	}
+
+	if (intel_sdvo->pixel_clock_min > clock)
+		return MODE_CLOCK_LOW;
+
+	if (intel_sdvo->pixel_clock_max < clock)
+		return MODE_CLOCK_HIGH;
+
+	if (IS_LVDS(intel_sdvo_connector)) {
+		enum drm_mode_status status;
+
+		status = intel_panel_mode_valid(&intel_sdvo_connector->base, mode);
+		if (status != MODE_OK)
+			return status;
+	}
+
+	return MODE_OK;
+}
+
+static bool intel_sdvo_get_capabilities(struct intel_sdvo *intel_sdvo, struct intel_sdvo_caps *caps)
+{
+	BUILD_BUG_ON(sizeof(*caps) != 8);
+	if (!intel_sdvo_get_value(intel_sdvo,
+				  SDVO_CMD_GET_DEVICE_CAPS,
+				  caps, sizeof(*caps)))
+		return false;
+
+	DRM_DEBUG_KMS("SDVO capabilities:\n"
+		      "  vendor_id: %d\n"
+		      "  device_id: %d\n"
+		      "  device_rev_id: %d\n"
+		      "  sdvo_version_major: %d\n"
+		      "  sdvo_version_minor: %d\n"
+		      "  sdvo_inputs_mask: %d\n"
+		      "  smooth_scaling: %d\n"
+		      "  sharp_scaling: %d\n"
+		      "  up_scaling: %d\n"
+		      "  down_scaling: %d\n"
+		      "  stall_support: %d\n"
+		      "  output_flags: %d\n",
+		      caps->vendor_id,
+		      caps->device_id,
+		      caps->device_rev_id,
+		      caps->sdvo_version_major,
+		      caps->sdvo_version_minor,
+		      caps->sdvo_inputs_mask,
+		      caps->smooth_scaling,
+		      caps->sharp_scaling,
+		      caps->up_scaling,
+		      caps->down_scaling,
+		      caps->stall_support,
+		      caps->output_flags);
+
+	return true;
+}
+
+static u8 intel_sdvo_get_colorimetry_cap(struct intel_sdvo *intel_sdvo)
+{
+	u8 cap;
+
+	if (!intel_sdvo_get_value(intel_sdvo, SDVO_CMD_GET_COLORIMETRY_CAP,
+				  &cap, sizeof(cap)))
+		return SDVO_COLORIMETRY_RGB256;
+
+	return cap;
+}
+
+static u16 intel_sdvo_get_hotplug_support(struct intel_sdvo *intel_sdvo)
+{
+	struct drm_i915_private *dev_priv = to_i915(intel_sdvo->base.base.dev);
+	u16 hotplug;
+
+	if (!I915_HAS_HOTPLUG(dev_priv))
+		return 0;
+
+	/*
+	 * HW Erratum: SDVO Hotplug is broken on all i945G chips, there's noise
+	 * on the line.
+	 */
+	if (IS_I945G(dev_priv) || IS_I945GM(dev_priv))
+		return 0;
+
+	if (!intel_sdvo_get_value(intel_sdvo, SDVO_CMD_GET_HOT_PLUG_SUPPORT,
+					&hotplug, sizeof(hotplug)))
+		return 0;
+
+	return hotplug;
+}
+
+static void intel_sdvo_enable_hotplug(struct intel_encoder *encoder)
+{
+	struct intel_sdvo *intel_sdvo = to_sdvo(encoder);
+
+	intel_sdvo_write_cmd(intel_sdvo, SDVO_CMD_SET_ACTIVE_HOT_PLUG,
+			     &intel_sdvo->hotplug_active, 2);
+}
+
+static enum intel_hotplug_state
+intel_sdvo_hotplug(struct intel_encoder *encoder,
+		   struct intel_connector *connector)
+{
+	intel_sdvo_enable_hotplug(encoder);
+
+	return intel_encoder_hotplug(encoder, connector);
+}
+
+static bool
+intel_sdvo_multifunc_encoder(struct intel_sdvo *intel_sdvo)
+{
+	/* Is there more than one type of output? */
+	return hweight16(intel_sdvo->caps.output_flags) > 1;
+}
+
+static struct edid *
+intel_sdvo_get_edid(struct drm_connector *connector)
+{
+	struct intel_sdvo *sdvo = intel_attached_sdvo(to_intel_connector(connector));
+	return drm_get_edid(connector, &sdvo->ddc);
+}
+
+/* Mac mini hack -- use the same DDC as the analog connector */
+static struct edid *
+intel_sdvo_get_analog_edid(struct drm_connector *connector)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->dev);
+
+	return drm_get_edid(connector,
+			    intel_gmbus_get_adapter(dev_priv,
+						    dev_priv->display.vbt.crt_ddc_pin));
+}
+
+static enum drm_connector_status
+intel_sdvo_tmds_sink_detect(struct drm_connector *connector)
+{
+	struct intel_sdvo *intel_sdvo = intel_attached_sdvo(to_intel_connector(connector));
+	struct intel_sdvo_connector *intel_sdvo_connector =
+		to_intel_sdvo_connector(connector);
+	enum drm_connector_status status;
+	struct edid *edid;
+
+	edid = intel_sdvo_get_edid(connector);
+
+	if (edid == NULL && intel_sdvo_multifunc_encoder(intel_sdvo)) {
+		u8 ddc, saved_ddc = intel_sdvo->ddc_bus;
+
+		/*
+		 * Don't use the 1 as the argument of DDC bus switch to get
+		 * the EDID. It is used for SDVO SPD ROM.
+		 */
+		for (ddc = intel_sdvo->ddc_bus >> 1; ddc > 1; ddc >>= 1) {
+			intel_sdvo->ddc_bus = ddc;
+			edid = intel_sdvo_get_edid(connector);
+			if (edid)
+				break;
+		}
+		/*
+		 * If we found the EDID on the other bus,
+		 * assume that is the correct DDC bus.
+		 */
+		if (edid == NULL)
+			intel_sdvo->ddc_bus = saved_ddc;
+	}
+
+	/*
+	 * When there is no edid and no monitor is connected with VGA
+	 * port, try to use the CRT ddc to read the EDID for DVI-connector.
+	 */
+	if (edid == NULL)
+		edid = intel_sdvo_get_analog_edid(connector);
+
+	status = connector_status_unknown;
+	if (edid != NULL) {
+		/* DDC bus is shared, match EDID to connector type */
+		if (edid->input & DRM_EDID_INPUT_DIGITAL) {
+			status = connector_status_connected;
+			if (intel_sdvo_connector->is_hdmi) {
+				intel_sdvo->has_hdmi_audio = drm_detect_monitor_audio(edid);
+			}
+		} else
+			status = connector_status_disconnected;
+		kfree(edid);
+	}
+
+	return status;
+}
+
+static bool
+intel_sdvo_connector_matches_edid(struct intel_sdvo_connector *sdvo,
+				  struct edid *edid)
+{
+	bool monitor_is_digital = !!(edid->input & DRM_EDID_INPUT_DIGITAL);
+	bool connector_is_digital = !!IS_DIGITAL(sdvo);
+
+	DRM_DEBUG_KMS("connector_is_digital? %d, monitor_is_digital? %d\n",
+		      connector_is_digital, monitor_is_digital);
+	return connector_is_digital == monitor_is_digital;
+}
+
+static enum drm_connector_status
+intel_sdvo_detect(struct drm_connector *connector, bool force)
+{
+	struct drm_i915_private *i915 = to_i915(connector->dev);
+	struct intel_sdvo *intel_sdvo = intel_attached_sdvo(to_intel_connector(connector));
+	struct intel_sdvo_connector *intel_sdvo_connector = to_intel_sdvo_connector(connector);
+	enum drm_connector_status ret;
+	u16 response;
+
+	DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
+		      connector->base.id, connector->name);
+
+	if (!INTEL_DISPLAY_ENABLED(i915))
+		return connector_status_disconnected;
+
+	if (!intel_sdvo_get_value(intel_sdvo,
+				  SDVO_CMD_GET_ATTACHED_DISPLAYS,
+				  &response, 2))
+		return connector_status_unknown;
+
+	DRM_DEBUG_KMS("SDVO response %d %d [%x]\n",
+		      response & 0xff, response >> 8,
+		      intel_sdvo_connector->output_flag);
+
+	if (response == 0)
+		return connector_status_disconnected;
+
+	intel_sdvo->attached_output = response;
+
+	intel_sdvo->has_hdmi_audio = false;
+
+	if ((intel_sdvo_connector->output_flag & response) == 0)
+		ret = connector_status_disconnected;
+	else if (IS_TMDS(intel_sdvo_connector))
+		ret = intel_sdvo_tmds_sink_detect(connector);
+	else {
+		struct edid *edid;
+
+		/* if we have an edid check it matches the connection */
+		edid = intel_sdvo_get_edid(connector);
+		if (edid == NULL)
+			edid = intel_sdvo_get_analog_edid(connector);
+		if (edid != NULL) {
+			if (intel_sdvo_connector_matches_edid(intel_sdvo_connector,
+							      edid))
+				ret = connector_status_connected;
+			else
+				ret = connector_status_disconnected;
+
+			kfree(edid);
+		} else
+			ret = connector_status_connected;
+	}
+
+	return ret;
+}
+
+static int intel_sdvo_get_ddc_modes(struct drm_connector *connector)
+{
+	int num_modes = 0;
+	struct edid *edid;
+
+	DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
+		      connector->base.id, connector->name);
+
+	/* set the bus switch and get the modes */
+	edid = intel_sdvo_get_edid(connector);
+
+	/*
+	 * Mac mini hack.  On this device, the DVI-I connector shares one DDC
+	 * link between analog and digital outputs. So, if the regular SDVO
+	 * DDC fails, check to see if the analog output is disconnected, in
+	 * which case we'll look there for the digital DDC data.
+	 */
+	if (!edid)
+		edid = intel_sdvo_get_analog_edid(connector);
+
+	if (!edid)
+		return 0;
+
+	if (intel_sdvo_connector_matches_edid(to_intel_sdvo_connector(connector),
+					      edid))
+		num_modes += intel_connector_update_modes(connector, edid);
+
+	kfree(edid);
+
+	return num_modes;
+}
+
+/*
+ * Set of SDVO TV modes.
+ * Note!  This is in reply order (see loop in get_tv_modes).
+ * XXX: all 60Hz refresh?
+ */
+static const struct drm_display_mode sdvo_tv_modes[] = {
+	{ DRM_MODE("320x200", DRM_MODE_TYPE_DRIVER, 5815, 320, 321, 384,
+		   416, 0, 200, 201, 232, 233, 0,
+		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
+	{ DRM_MODE("320x240", DRM_MODE_TYPE_DRIVER, 6814, 320, 321, 384,
+		   416, 0, 240, 241, 272, 273, 0,
+		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
+	{ DRM_MODE("400x300", DRM_MODE_TYPE_DRIVER, 9910, 400, 401, 464,
+		   496, 0, 300, 301, 332, 333, 0,
+		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
+	{ DRM_MODE("640x350", DRM_MODE_TYPE_DRIVER, 16913, 640, 641, 704,
+		   736, 0, 350, 351, 382, 383, 0,
+		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
+	{ DRM_MODE("640x400", DRM_MODE_TYPE_DRIVER, 19121, 640, 641, 704,
+		   736, 0, 400, 401, 432, 433, 0,
+		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
+	{ DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 22654, 640, 641, 704,
+		   736, 0, 480, 481, 512, 513, 0,
+		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
+	{ DRM_MODE("704x480", DRM_MODE_TYPE_DRIVER, 24624, 704, 705, 768,
+		   800, 0, 480, 481, 512, 513, 0,
+		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
+	{ DRM_MODE("704x576", DRM_MODE_TYPE_DRIVER, 29232, 704, 705, 768,
+		   800, 0, 576, 577, 608, 609, 0,
+		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
+	{ DRM_MODE("720x350", DRM_MODE_TYPE_DRIVER, 18751, 720, 721, 784,
+		   816, 0, 350, 351, 382, 383, 0,
+		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
+	{ DRM_MODE("720x400", DRM_MODE_TYPE_DRIVER, 21199, 720, 721, 784,
+		   816, 0, 400, 401, 432, 433, 0,
+		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
+	{ DRM_MODE("720x480", DRM_MODE_TYPE_DRIVER, 25116, 720, 721, 784,
+		   816, 0, 480, 481, 512, 513, 0,
+		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
+	{ DRM_MODE("720x540", DRM_MODE_TYPE_DRIVER, 28054, 720, 721, 784,
+		   816, 0, 540, 541, 572, 573, 0,
+		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
+	{ DRM_MODE("720x576", DRM_MODE_TYPE_DRIVER, 29816, 720, 721, 784,
+		   816, 0, 576, 577, 608, 609, 0,
+		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
+	{ DRM_MODE("768x576", DRM_MODE_TYPE_DRIVER, 31570, 768, 769, 832,
+		   864, 0, 576, 577, 608, 609, 0,
+		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
+	{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 34030, 800, 801, 864,
+		   896, 0, 600, 601, 632, 633, 0,
+		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
+	{ DRM_MODE("832x624", DRM_MODE_TYPE_DRIVER, 36581, 832, 833, 896,
+		   928, 0, 624, 625, 656, 657, 0,
+		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
+	{ DRM_MODE("920x766", DRM_MODE_TYPE_DRIVER, 48707, 920, 921, 984,
+		   1016, 0, 766, 767, 798, 799, 0,
+		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
+	{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 53827, 1024, 1025, 1088,
+		   1120, 0, 768, 769, 800, 801, 0,
+		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
+	{ DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 87265, 1280, 1281, 1344,
+		   1376, 0, 1024, 1025, 1056, 1057, 0,
+		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
+};
+
+static int intel_sdvo_get_tv_modes(struct drm_connector *connector)
+{
+	struct intel_sdvo *intel_sdvo = intel_attached_sdvo(to_intel_connector(connector));
+	const struct drm_connector_state *conn_state = connector->state;
+	struct intel_sdvo_sdtv_resolution_request tv_res;
+	u32 reply = 0, format_map = 0;
+	int num_modes = 0;
+	int i;
+
+	DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
+		      connector->base.id, connector->name);
+
+	/*
+	 * Read the list of supported input resolutions for the selected TV
+	 * format.
+	 */
+	format_map = 1 << conn_state->tv.mode;
+	memcpy(&tv_res, &format_map,
+	       min(sizeof(format_map), sizeof(struct intel_sdvo_sdtv_resolution_request)));
+
+	if (!intel_sdvo_set_target_output(intel_sdvo, intel_sdvo->attached_output))
+		return 0;
+
+	BUILD_BUG_ON(sizeof(tv_res) != 3);
+	if (!intel_sdvo_write_cmd(intel_sdvo,
+				  SDVO_CMD_GET_SDTV_RESOLUTION_SUPPORT,
+				  &tv_res, sizeof(tv_res)))
+		return 0;
+	if (!intel_sdvo_read_response(intel_sdvo, &reply, 3))
+		return 0;
+
+	for (i = 0; i < ARRAY_SIZE(sdvo_tv_modes); i++) {
+		if (reply & (1 << i)) {
+			struct drm_display_mode *nmode;
+			nmode = drm_mode_duplicate(connector->dev,
+						   &sdvo_tv_modes[i]);
+			if (nmode) {
+				drm_mode_probed_add(connector, nmode);
+				num_modes++;
+			}
+		}
+	}
+
+	return num_modes;
+}
+
+static int intel_sdvo_get_lvds_modes(struct drm_connector *connector)
+{
+	struct intel_sdvo *intel_sdvo = intel_attached_sdvo(to_intel_connector(connector));
+	struct drm_i915_private *dev_priv = to_i915(connector->dev);
+	int num_modes = 0;
+
+	drm_dbg_kms(&dev_priv->drm, "[CONNECTOR:%d:%s]\n",
+		    connector->base.id, connector->name);
+
+	num_modes += intel_panel_get_modes(to_intel_connector(connector));
+	num_modes += intel_ddc_get_modes(connector, &intel_sdvo->ddc);
+
+	return num_modes;
+}
+
+static int intel_sdvo_get_modes(struct drm_connector *connector)
+{
+	struct intel_sdvo_connector *intel_sdvo_connector = to_intel_sdvo_connector(connector);
+
+	if (IS_TV(intel_sdvo_connector))
+		return intel_sdvo_get_tv_modes(connector);
+	else if (IS_LVDS(intel_sdvo_connector))
+		return intel_sdvo_get_lvds_modes(connector);
+	else
+		return intel_sdvo_get_ddc_modes(connector);
+}
+
+static int
+intel_sdvo_connector_atomic_get_property(struct drm_connector *connector,
+					 const struct drm_connector_state *state,
+					 struct drm_property *property,
+					 u64 *val)
+{
+	struct intel_sdvo_connector *intel_sdvo_connector = to_intel_sdvo_connector(connector);
+	const struct intel_sdvo_connector_state *sdvo_state = to_intel_sdvo_connector_state((void *)state);
+
+	if (property == intel_sdvo_connector->tv_format) {
+		int i;
+
+		for (i = 0; i < intel_sdvo_connector->format_supported_num; i++)
+			if (state->tv.mode == intel_sdvo_connector->tv_format_supported[i]) {
+				*val = i;
+
+				return 0;
+			}
+
+		drm_WARN_ON(connector->dev, 1);
+		*val = 0;
+	} else if (property == intel_sdvo_connector->top ||
+		   property == intel_sdvo_connector->bottom)
+		*val = intel_sdvo_connector->max_vscan - sdvo_state->tv.overscan_v;
+	else if (property == intel_sdvo_connector->left ||
+		 property == intel_sdvo_connector->right)
+		*val = intel_sdvo_connector->max_hscan - sdvo_state->tv.overscan_h;
+	else if (property == intel_sdvo_connector->hpos)
+		*val = sdvo_state->tv.hpos;
+	else if (property == intel_sdvo_connector->vpos)
+		*val = sdvo_state->tv.vpos;
+	else if (property == intel_sdvo_connector->saturation)
+		*val = state->tv.saturation;
+	else if (property == intel_sdvo_connector->contrast)
+		*val = state->tv.contrast;
+	else if (property == intel_sdvo_connector->hue)
+		*val = state->tv.hue;
+	else if (property == intel_sdvo_connector->brightness)
+		*val = state->tv.brightness;
+	else if (property == intel_sdvo_connector->sharpness)
+		*val = sdvo_state->tv.sharpness;
+	else if (property == intel_sdvo_connector->flicker_filter)
+		*val = sdvo_state->tv.flicker_filter;
+	else if (property == intel_sdvo_connector->flicker_filter_2d)
+		*val = sdvo_state->tv.flicker_filter_2d;
+	else if (property == intel_sdvo_connector->flicker_filter_adaptive)
+		*val = sdvo_state->tv.flicker_filter_adaptive;
+	else if (property == intel_sdvo_connector->tv_chroma_filter)
+		*val = sdvo_state->tv.chroma_filter;
+	else if (property == intel_sdvo_connector->tv_luma_filter)
+		*val = sdvo_state->tv.luma_filter;
+	else if (property == intel_sdvo_connector->dot_crawl)
+		*val = sdvo_state->tv.dot_crawl;
+	else
+		return intel_digital_connector_atomic_get_property(connector, state, property, val);
+
+	return 0;
+}
+
+static int
+intel_sdvo_connector_atomic_set_property(struct drm_connector *connector,
+					 struct drm_connector_state *state,
+					 struct drm_property *property,
+					 u64 val)
+{
+	struct intel_sdvo_connector *intel_sdvo_connector = to_intel_sdvo_connector(connector);
+	struct intel_sdvo_connector_state *sdvo_state = to_intel_sdvo_connector_state(state);
+
+	if (property == intel_sdvo_connector->tv_format) {
+		state->tv.mode = intel_sdvo_connector->tv_format_supported[val];
+
+		if (state->crtc) {
+			struct drm_crtc_state *crtc_state =
+				drm_atomic_get_new_crtc_state(state->state, state->crtc);
+
+			crtc_state->connectors_changed = true;
+		}
+	} else if (property == intel_sdvo_connector->top ||
+		   property == intel_sdvo_connector->bottom)
+		/* Cannot set these independent from each other */
+		sdvo_state->tv.overscan_v = intel_sdvo_connector->max_vscan - val;
+	else if (property == intel_sdvo_connector->left ||
+		 property == intel_sdvo_connector->right)
+		/* Cannot set these independent from each other */
+		sdvo_state->tv.overscan_h = intel_sdvo_connector->max_hscan - val;
+	else if (property == intel_sdvo_connector->hpos)
+		sdvo_state->tv.hpos = val;
+	else if (property == intel_sdvo_connector->vpos)
+		sdvo_state->tv.vpos = val;
+	else if (property == intel_sdvo_connector->saturation)
+		state->tv.saturation = val;
+	else if (property == intel_sdvo_connector->contrast)
+		state->tv.contrast = val;
+	else if (property == intel_sdvo_connector->hue)
+		state->tv.hue = val;
+	else if (property == intel_sdvo_connector->brightness)
+		state->tv.brightness = val;
+	else if (property == intel_sdvo_connector->sharpness)
+		sdvo_state->tv.sharpness = val;
+	else if (property == intel_sdvo_connector->flicker_filter)
+		sdvo_state->tv.flicker_filter = val;
+	else if (property == intel_sdvo_connector->flicker_filter_2d)
+		sdvo_state->tv.flicker_filter_2d = val;
+	else if (property == intel_sdvo_connector->flicker_filter_adaptive)
+		sdvo_state->tv.flicker_filter_adaptive = val;
+	else if (property == intel_sdvo_connector->tv_chroma_filter)
+		sdvo_state->tv.chroma_filter = val;
+	else if (property == intel_sdvo_connector->tv_luma_filter)
+		sdvo_state->tv.luma_filter = val;
+	else if (property == intel_sdvo_connector->dot_crawl)
+		sdvo_state->tv.dot_crawl = val;
+	else
+		return intel_digital_connector_atomic_set_property(connector, state, property, val);
+
+	return 0;
+}
+
+static int
+intel_sdvo_connector_register(struct drm_connector *connector)
+{
+	struct intel_sdvo *sdvo = intel_attached_sdvo(to_intel_connector(connector));
+	int ret;
+
+	ret = intel_connector_register(connector);
+	if (ret)
+		return ret;
+
+	return sysfs_create_link(&connector->kdev->kobj,
+				 &sdvo->ddc.dev.kobj,
+				 sdvo->ddc.dev.kobj.name);
+}
+
+static void
+intel_sdvo_connector_unregister(struct drm_connector *connector)
+{
+	struct intel_sdvo *sdvo = intel_attached_sdvo(to_intel_connector(connector));
+
+	sysfs_remove_link(&connector->kdev->kobj,
+			  sdvo->ddc.dev.kobj.name);
+	intel_connector_unregister(connector);
+}
+
+static struct drm_connector_state *
+intel_sdvo_connector_duplicate_state(struct drm_connector *connector)
+{
+	struct intel_sdvo_connector_state *state;
+
+	state = kmemdup(connector->state, sizeof(*state), GFP_KERNEL);
+	if (!state)
+		return NULL;
+
+	__drm_atomic_helper_connector_duplicate_state(connector, &state->base.base);
+	return &state->base.base;
+}
+
+static const struct drm_connector_funcs intel_sdvo_connector_funcs = {
+	.detect = intel_sdvo_detect,
+	.fill_modes = drm_helper_probe_single_connector_modes,
+	.atomic_get_property = intel_sdvo_connector_atomic_get_property,
+	.atomic_set_property = intel_sdvo_connector_atomic_set_property,
+	.late_register = intel_sdvo_connector_register,
+	.early_unregister = intel_sdvo_connector_unregister,
+	.destroy = intel_connector_destroy,
+	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+	.atomic_duplicate_state = intel_sdvo_connector_duplicate_state,
+};
+
+static int intel_sdvo_atomic_check(struct drm_connector *conn,
+				   struct drm_atomic_state *state)
+{
+	struct drm_connector_state *new_conn_state =
+		drm_atomic_get_new_connector_state(state, conn);
+	struct drm_connector_state *old_conn_state =
+		drm_atomic_get_old_connector_state(state, conn);
+	struct intel_sdvo_connector_state *old_state =
+		to_intel_sdvo_connector_state(old_conn_state);
+	struct intel_sdvo_connector_state *new_state =
+		to_intel_sdvo_connector_state(new_conn_state);
+
+	if (new_conn_state->crtc &&
+	    (memcmp(&old_state->tv, &new_state->tv, sizeof(old_state->tv)) ||
+	     memcmp(&old_conn_state->tv, &new_conn_state->tv, sizeof(old_conn_state->tv)))) {
+		struct drm_crtc_state *crtc_state =
+			drm_atomic_get_new_crtc_state(state,
+						      new_conn_state->crtc);
+
+		crtc_state->connectors_changed = true;
+	}
+
+	return intel_digital_connector_atomic_check(conn, state);
+}
+
+static const struct drm_connector_helper_funcs intel_sdvo_connector_helper_funcs = {
+	.get_modes = intel_sdvo_get_modes,
+	.mode_valid = intel_sdvo_mode_valid,
+	.atomic_check = intel_sdvo_atomic_check,
+};
+
+static void intel_sdvo_enc_destroy(struct drm_encoder *encoder)
+{
+	struct intel_sdvo *intel_sdvo = to_sdvo(to_intel_encoder(encoder));
+
+	i2c_del_adapter(&intel_sdvo->ddc);
+	intel_encoder_destroy(encoder);
+}
+
+static const struct drm_encoder_funcs intel_sdvo_enc_funcs = {
+	.destroy = intel_sdvo_enc_destroy,
+};
+
+static void
+intel_sdvo_guess_ddc_bus(struct intel_sdvo *sdvo)
+{
+	u16 mask = 0;
+	unsigned int num_bits;
+
+	/*
+	 * Make a mask of outputs less than or equal to our own priority in the
+	 * list.
+	 */
+	switch (sdvo->controlled_output) {
+	case SDVO_OUTPUT_LVDS1:
+		mask |= SDVO_OUTPUT_LVDS1;
+		fallthrough;
+	case SDVO_OUTPUT_LVDS0:
+		mask |= SDVO_OUTPUT_LVDS0;
+		fallthrough;
+	case SDVO_OUTPUT_TMDS1:
+		mask |= SDVO_OUTPUT_TMDS1;
+		fallthrough;
+	case SDVO_OUTPUT_TMDS0:
+		mask |= SDVO_OUTPUT_TMDS0;
+		fallthrough;
+	case SDVO_OUTPUT_RGB1:
+		mask |= SDVO_OUTPUT_RGB1;
+		fallthrough;
+	case SDVO_OUTPUT_RGB0:
+		mask |= SDVO_OUTPUT_RGB0;
+		break;
+	}
+
+	/* Count bits to find what number we are in the priority list. */
+	mask &= sdvo->caps.output_flags;
+	num_bits = hweight16(mask);
+	/* If more than 3 outputs, default to DDC bus 3 for now. */
+	if (num_bits > 3)
+		num_bits = 3;
+
+	/* Corresponds to SDVO_CONTROL_BUS_DDCx */
+	sdvo->ddc_bus = 1 << num_bits;
+}
+
+/*
+ * Choose the appropriate DDC bus for control bus switch command for this
+ * SDVO output based on the controlled output.
+ *
+ * DDC bus number assignment is in a priority order of RGB outputs, then TMDS
+ * outputs, then LVDS outputs.
+ */
+static void
+intel_sdvo_select_ddc_bus(struct drm_i915_private *dev_priv,
+			  struct intel_sdvo *sdvo)
+{
+	struct sdvo_device_mapping *mapping;
+
+	if (sdvo->port == PORT_B)
+		mapping = &dev_priv->display.vbt.sdvo_mappings[0];
+	else
+		mapping = &dev_priv->display.vbt.sdvo_mappings[1];
+
+	if (mapping->initialized)
+		sdvo->ddc_bus = 1 << ((mapping->ddc_pin & 0xf0) >> 4);
+	else
+		intel_sdvo_guess_ddc_bus(sdvo);
+}
+
+static void
+intel_sdvo_select_i2c_bus(struct drm_i915_private *dev_priv,
+			  struct intel_sdvo *sdvo)
+{
+	struct sdvo_device_mapping *mapping;
+	u8 pin;
+
+	if (sdvo->port == PORT_B)
+		mapping = &dev_priv->display.vbt.sdvo_mappings[0];
+	else
+		mapping = &dev_priv->display.vbt.sdvo_mappings[1];
+
+	if (mapping->initialized &&
+	    intel_gmbus_is_valid_pin(dev_priv, mapping->i2c_pin))
+		pin = mapping->i2c_pin;
+	else
+		pin = GMBUS_PIN_DPB;
+
+	sdvo->i2c = intel_gmbus_get_adapter(dev_priv, pin);
+
+	/*
+	 * With gmbus we should be able to drive sdvo i2c at 2MHz, but somehow
+	 * our code totally fails once we start using gmbus. Hence fall back to
+	 * bit banging for now.
+	 */
+	intel_gmbus_force_bit(sdvo->i2c, true);
+}
+
+/* undo any changes intel_sdvo_select_i2c_bus() did to sdvo->i2c */
+static void
+intel_sdvo_unselect_i2c_bus(struct intel_sdvo *sdvo)
+{
+	intel_gmbus_force_bit(sdvo->i2c, false);
+}
+
+static bool
+intel_sdvo_is_hdmi_connector(struct intel_sdvo *intel_sdvo, int device)
+{
+	return intel_sdvo_check_supp_encode(intel_sdvo);
+}
+
+static u8
+intel_sdvo_get_slave_addr(struct drm_i915_private *dev_priv,
+			  struct intel_sdvo *sdvo)
+{
+	struct sdvo_device_mapping *my_mapping, *other_mapping;
+
+	if (sdvo->port == PORT_B) {
+		my_mapping = &dev_priv->display.vbt.sdvo_mappings[0];
+		other_mapping = &dev_priv->display.vbt.sdvo_mappings[1];
+	} else {
+		my_mapping = &dev_priv->display.vbt.sdvo_mappings[1];
+		other_mapping = &dev_priv->display.vbt.sdvo_mappings[0];
+	}
+
+	/* If the BIOS described our SDVO device, take advantage of it. */
+	if (my_mapping->slave_addr)
+		return my_mapping->slave_addr;
+
+	/*
+	 * If the BIOS only described a different SDVO device, use the
+	 * address that it isn't using.
+	 */
+	if (other_mapping->slave_addr) {
+		if (other_mapping->slave_addr == 0x70)
+			return 0x72;
+		else
+			return 0x70;
+	}
+
+	/*
+	 * No SDVO device info is found for another DVO port,
+	 * so use mapping assumption we had before BIOS parsing.
+	 */
+	if (sdvo->port == PORT_B)
+		return 0x70;
+	else
+		return 0x72;
+}
+
+static int
+intel_sdvo_connector_init(struct intel_sdvo_connector *connector,
+			  struct intel_sdvo *encoder)
+{
+	struct drm_connector *drm_connector;
+	int ret;
+
+	drm_connector = &connector->base.base;
+	ret = drm_connector_init(encoder->base.base.dev,
+			   drm_connector,
+			   &intel_sdvo_connector_funcs,
+			   connector->base.base.connector_type);
+	if (ret < 0)
+		return ret;
+
+	drm_connector_helper_add(drm_connector,
+				 &intel_sdvo_connector_helper_funcs);
+
+	connector->base.base.interlace_allowed = 1;
+	connector->base.base.doublescan_allowed = 0;
+	connector->base.base.display_info.subpixel_order = SubPixelHorizontalRGB;
+	connector->base.get_hw_state = intel_sdvo_connector_get_hw_state;
+
+	intel_connector_attach_encoder(&connector->base, &encoder->base);
+
+	return 0;
+}
+
+static void
+intel_sdvo_add_hdmi_properties(struct intel_sdvo *intel_sdvo,
+			       struct intel_sdvo_connector *connector)
+{
+	intel_attach_force_audio_property(&connector->base.base);
+	if (intel_sdvo->colorimetry_cap & SDVO_COLORIMETRY_RGB220)
+		intel_attach_broadcast_rgb_property(&connector->base.base);
+	intel_attach_aspect_ratio_property(&connector->base.base);
+}
+
+static struct intel_sdvo_connector *intel_sdvo_connector_alloc(void)
+{
+	struct intel_sdvo_connector *sdvo_connector;
+	struct intel_sdvo_connector_state *conn_state;
+
+	sdvo_connector = kzalloc(sizeof(*sdvo_connector), GFP_KERNEL);
+	if (!sdvo_connector)
+		return NULL;
+
+	conn_state = kzalloc(sizeof(*conn_state), GFP_KERNEL);
+	if (!conn_state) {
+		kfree(sdvo_connector);
+		return NULL;
+	}
+
+	__drm_atomic_helper_connector_reset(&sdvo_connector->base.base,
+					    &conn_state->base.base);
+
+	intel_panel_init_alloc(&sdvo_connector->base);
+
+	return sdvo_connector;
+}
+
+static bool
+intel_sdvo_dvi_init(struct intel_sdvo *intel_sdvo, int device)
+{
+	struct drm_encoder *encoder = &intel_sdvo->base.base;
+	struct drm_connector *connector;
+	struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
+	struct intel_connector *intel_connector;
+	struct intel_sdvo_connector *intel_sdvo_connector;
+
+	DRM_DEBUG_KMS("initialising DVI device %d\n", device);
+
+	intel_sdvo_connector = intel_sdvo_connector_alloc();
+	if (!intel_sdvo_connector)
+		return false;
+
+	if (device == 0)
+		intel_sdvo_connector->output_flag = SDVO_OUTPUT_TMDS0;
+	else if (device == 1)
+		intel_sdvo_connector->output_flag = SDVO_OUTPUT_TMDS1;
+
+	intel_connector = &intel_sdvo_connector->base;
+	connector = &intel_connector->base;
+	if (intel_sdvo_get_hotplug_support(intel_sdvo) &
+		intel_sdvo_connector->output_flag) {
+		intel_sdvo->hotplug_active |= intel_sdvo_connector->output_flag;
+		/*
+		 * Some SDVO devices have one-shot hotplug interrupts.
+		 * Ensure that they get re-enabled when an interrupt happens.
+		 */
+		intel_connector->polled = DRM_CONNECTOR_POLL_HPD;
+		intel_encoder->hotplug = intel_sdvo_hotplug;
+		intel_sdvo_enable_hotplug(intel_encoder);
+	} else {
+		intel_connector->polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT;
+	}
+	encoder->encoder_type = DRM_MODE_ENCODER_TMDS;
+	connector->connector_type = DRM_MODE_CONNECTOR_DVID;
+
+	if (intel_sdvo_is_hdmi_connector(intel_sdvo, device)) {
+		connector->connector_type = DRM_MODE_CONNECTOR_HDMIA;
+		intel_sdvo_connector->is_hdmi = true;
+	}
+
+	if (intel_sdvo_connector_init(intel_sdvo_connector, intel_sdvo) < 0) {
+		kfree(intel_sdvo_connector);
+		return false;
+	}
+
+	if (intel_sdvo_connector->is_hdmi)
+		intel_sdvo_add_hdmi_properties(intel_sdvo, intel_sdvo_connector);
+
+	return true;
+}
+
+static bool
+intel_sdvo_tv_init(struct intel_sdvo *intel_sdvo, int type)
+{
+	struct drm_encoder *encoder = &intel_sdvo->base.base;
+	struct drm_connector *connector;
+	struct intel_connector *intel_connector;
+	struct intel_sdvo_connector *intel_sdvo_connector;
+
+	DRM_DEBUG_KMS("initialising TV type %d\n", type);
+
+	intel_sdvo_connector = intel_sdvo_connector_alloc();
+	if (!intel_sdvo_connector)
+		return false;
+
+	intel_connector = &intel_sdvo_connector->base;
+	connector = &intel_connector->base;
+	encoder->encoder_type = DRM_MODE_ENCODER_TVDAC;
+	connector->connector_type = DRM_MODE_CONNECTOR_SVIDEO;
+
+	intel_sdvo_connector->output_flag = type;
+
+	if (intel_sdvo_connector_init(intel_sdvo_connector, intel_sdvo) < 0) {
+		kfree(intel_sdvo_connector);
+		return false;
+	}
+
+	if (!intel_sdvo_tv_create_property(intel_sdvo, intel_sdvo_connector, type))
+		goto err;
+
+	if (!intel_sdvo_create_enhance_property(intel_sdvo, intel_sdvo_connector))
+		goto err;
+
+	return true;
+
+err:
+	intel_connector_destroy(connector);
+	return false;
+}
+
+static bool
+intel_sdvo_analog_init(struct intel_sdvo *intel_sdvo, int device)
+{
+	struct drm_encoder *encoder = &intel_sdvo->base.base;
+	struct drm_connector *connector;
+	struct intel_connector *intel_connector;
+	struct intel_sdvo_connector *intel_sdvo_connector;
+
+	DRM_DEBUG_KMS("initialising analog device %d\n", device);
+
+	intel_sdvo_connector = intel_sdvo_connector_alloc();
+	if (!intel_sdvo_connector)
+		return false;
+
+	intel_connector = &intel_sdvo_connector->base;
+	connector = &intel_connector->base;
+	intel_connector->polled = DRM_CONNECTOR_POLL_CONNECT;
+	encoder->encoder_type = DRM_MODE_ENCODER_DAC;
+	connector->connector_type = DRM_MODE_CONNECTOR_VGA;
+
+	if (device == 0)
+		intel_sdvo_connector->output_flag = SDVO_OUTPUT_RGB0;
+	else if (device == 1)
+		intel_sdvo_connector->output_flag = SDVO_OUTPUT_RGB1;
+
+	if (intel_sdvo_connector_init(intel_sdvo_connector, intel_sdvo) < 0) {
+		kfree(intel_sdvo_connector);
+		return false;
+	}
+
+	return true;
+}
+
+static bool
+intel_sdvo_lvds_init(struct intel_sdvo *intel_sdvo, int device)
+{
+	struct drm_encoder *encoder = &intel_sdvo->base.base;
+	struct drm_i915_private *i915 = to_i915(encoder->dev);
+	struct drm_connector *connector;
+	struct intel_connector *intel_connector;
+	struct intel_sdvo_connector *intel_sdvo_connector;
+
+	DRM_DEBUG_KMS("initialising LVDS device %d\n", device);
+
+	intel_sdvo_connector = intel_sdvo_connector_alloc();
+	if (!intel_sdvo_connector)
+		return false;
+
+	intel_connector = &intel_sdvo_connector->base;
+	connector = &intel_connector->base;
+	encoder->encoder_type = DRM_MODE_ENCODER_LVDS;
+	connector->connector_type = DRM_MODE_CONNECTOR_LVDS;
+
+	if (device == 0)
+		intel_sdvo_connector->output_flag = SDVO_OUTPUT_LVDS0;
+	else if (device == 1)
+		intel_sdvo_connector->output_flag = SDVO_OUTPUT_LVDS1;
+
+	if (intel_sdvo_connector_init(intel_sdvo_connector, intel_sdvo) < 0) {
+		kfree(intel_sdvo_connector);
+		return false;
+	}
+
+	if (!intel_sdvo_create_enhance_property(intel_sdvo, intel_sdvo_connector))
+		goto err;
+
+	intel_bios_init_panel_late(i915, &intel_connector->panel, NULL, NULL);
+
+	/*
+	 * Fetch modes from VBT. For SDVO prefer the VBT mode since some
+	 * SDVO->LVDS transcoders can't cope with the EDID mode.
+	 */
+	intel_panel_add_vbt_sdvo_fixed_mode(intel_connector);
+
+	if (!intel_panel_preferred_fixed_mode(intel_connector)) {
+		mutex_lock(&i915->drm.mode_config.mutex);
+
+		intel_ddc_get_modes(connector, &intel_sdvo->ddc);
+		intel_panel_add_edid_fixed_modes(intel_connector, false);
+
+		mutex_unlock(&i915->drm.mode_config.mutex);
+	}
+
+	intel_panel_init(intel_connector);
+
+	if (!intel_panel_preferred_fixed_mode(intel_connector))
+		goto err;
+
+	return true;
+
+err:
+	intel_connector_destroy(connector);
+	return false;
+}
+
+static u16 intel_sdvo_filter_output_flags(u16 flags)
+{
+	flags &= SDVO_OUTPUT_MASK;
+
+	/* SDVO requires XXX1 function may not exist unless it has XXX0 function.*/
+	if (!(flags & SDVO_OUTPUT_TMDS0))
+		flags &= ~SDVO_OUTPUT_TMDS1;
+
+	if (!(flags & SDVO_OUTPUT_RGB0))
+		flags &= ~SDVO_OUTPUT_RGB1;
+
+	if (!(flags & SDVO_OUTPUT_LVDS0))
+		flags &= ~SDVO_OUTPUT_LVDS1;
+
+	return flags;
+}
+
+static bool
+intel_sdvo_output_setup(struct intel_sdvo *intel_sdvo, u16 flags)
+{
+	struct drm_i915_private *i915 = to_i915(intel_sdvo->base.base.dev);
+
+	flags = intel_sdvo_filter_output_flags(flags);
+
+	intel_sdvo->controlled_output = flags;
+
+	intel_sdvo_select_ddc_bus(i915, intel_sdvo);
+
+	if (flags & SDVO_OUTPUT_TMDS0)
+		if (!intel_sdvo_dvi_init(intel_sdvo, 0))
+			return false;
+
+	if (flags & SDVO_OUTPUT_TMDS1)
+		if (!intel_sdvo_dvi_init(intel_sdvo, 1))
+			return false;
+
+	/* TV has no XXX1 function block */
+	if (flags & SDVO_OUTPUT_SVID0)
+		if (!intel_sdvo_tv_init(intel_sdvo, SDVO_OUTPUT_SVID0))
+			return false;
+
+	if (flags & SDVO_OUTPUT_CVBS0)
+		if (!intel_sdvo_tv_init(intel_sdvo, SDVO_OUTPUT_CVBS0))
+			return false;
+
+	if (flags & SDVO_OUTPUT_YPRPB0)
+		if (!intel_sdvo_tv_init(intel_sdvo, SDVO_OUTPUT_YPRPB0))
+			return false;
+
+	if (flags & SDVO_OUTPUT_RGB0)
+		if (!intel_sdvo_analog_init(intel_sdvo, 0))
+			return false;
+
+	if (flags & SDVO_OUTPUT_RGB1)
+		if (!intel_sdvo_analog_init(intel_sdvo, 1))
+			return false;
+
+	if (flags & SDVO_OUTPUT_LVDS0)
+		if (!intel_sdvo_lvds_init(intel_sdvo, 0))
+			return false;
+
+	if (flags & SDVO_OUTPUT_LVDS1)
+		if (!intel_sdvo_lvds_init(intel_sdvo, 1))
+			return false;
+
+	if (flags == 0) {
+		unsigned char bytes[2];
+
+		memcpy(bytes, &intel_sdvo->caps.output_flags, 2);
+		DRM_DEBUG_KMS("%s: Unknown SDVO output type (0x%02x%02x)\n",
+			      SDVO_NAME(intel_sdvo),
+			      bytes[0], bytes[1]);
+		return false;
+	}
+	intel_sdvo->base.pipe_mask = ~0;
+
+	return true;
+}
+
+static void intel_sdvo_output_cleanup(struct intel_sdvo *intel_sdvo)
+{
+	struct drm_device *dev = intel_sdvo->base.base.dev;
+	struct drm_connector *connector, *tmp;
+
+	list_for_each_entry_safe(connector, tmp,
+				 &dev->mode_config.connector_list, head) {
+		if (intel_attached_encoder(to_intel_connector(connector)) == &intel_sdvo->base) {
+			drm_connector_unregister(connector);
+			intel_connector_destroy(connector);
+		}
+	}
+}
+
+static bool intel_sdvo_tv_create_property(struct intel_sdvo *intel_sdvo,
+					  struct intel_sdvo_connector *intel_sdvo_connector,
+					  int type)
+{
+	struct drm_device *dev = intel_sdvo->base.base.dev;
+	struct intel_sdvo_tv_format format;
+	u32 format_map, i;
+
+	if (!intel_sdvo_set_target_output(intel_sdvo, type))
+		return false;
+
+	BUILD_BUG_ON(sizeof(format) != 6);
+	if (!intel_sdvo_get_value(intel_sdvo,
+				  SDVO_CMD_GET_SUPPORTED_TV_FORMATS,
+				  &format, sizeof(format)))
+		return false;
+
+	memcpy(&format_map, &format, min(sizeof(format_map), sizeof(format)));
+
+	if (format_map == 0)
+		return false;
+
+	intel_sdvo_connector->format_supported_num = 0;
+	for (i = 0 ; i < TV_FORMAT_NUM; i++)
+		if (format_map & (1 << i))
+			intel_sdvo_connector->tv_format_supported[intel_sdvo_connector->format_supported_num++] = i;
+
+
+	intel_sdvo_connector->tv_format =
+			drm_property_create(dev, DRM_MODE_PROP_ENUM,
+					    "mode", intel_sdvo_connector->format_supported_num);
+	if (!intel_sdvo_connector->tv_format)
+		return false;
+
+	for (i = 0; i < intel_sdvo_connector->format_supported_num; i++)
+		drm_property_add_enum(intel_sdvo_connector->tv_format, i,
+				      tv_format_names[intel_sdvo_connector->tv_format_supported[i]]);
+
+	intel_sdvo_connector->base.base.state->tv.mode = intel_sdvo_connector->tv_format_supported[0];
+	drm_object_attach_property(&intel_sdvo_connector->base.base.base,
+				   intel_sdvo_connector->tv_format, 0);
+	return true;
+
+}
+
+#define _ENHANCEMENT(state_assignment, name, NAME) do { \
+	if (enhancements.name) { \
+		if (!intel_sdvo_get_value(intel_sdvo, SDVO_CMD_GET_MAX_##NAME, &data_value, 4) || \
+		    !intel_sdvo_get_value(intel_sdvo, SDVO_CMD_GET_##NAME, &response, 2)) \
+			return false; \
+		intel_sdvo_connector->name = \
+			drm_property_create_range(dev, 0, #name, 0, data_value[0]); \
+		if (!intel_sdvo_connector->name) return false; \
+		state_assignment = response; \
+		drm_object_attach_property(&connector->base, \
+					   intel_sdvo_connector->name, 0); \
+		DRM_DEBUG_KMS(#name ": max %d, default %d, current %d\n", \
+			      data_value[0], data_value[1], response); \
+	} \
+} while (0)
+
+#define ENHANCEMENT(state, name, NAME) _ENHANCEMENT((state)->name, name, NAME)
+
+static bool
+intel_sdvo_create_enhance_property_tv(struct intel_sdvo *intel_sdvo,
+				      struct intel_sdvo_connector *intel_sdvo_connector,
+				      struct intel_sdvo_enhancements_reply enhancements)
+{
+	struct drm_device *dev = intel_sdvo->base.base.dev;
+	struct drm_connector *connector = &intel_sdvo_connector->base.base;
+	struct drm_connector_state *conn_state = connector->state;
+	struct intel_sdvo_connector_state *sdvo_state =
+		to_intel_sdvo_connector_state(conn_state);
+	u16 response, data_value[2];
+
+	/* when horizontal overscan is supported, Add the left/right property */
+	if (enhancements.overscan_h) {
+		if (!intel_sdvo_get_value(intel_sdvo,
+					  SDVO_CMD_GET_MAX_OVERSCAN_H,
+					  &data_value, 4))
+			return false;
+
+		if (!intel_sdvo_get_value(intel_sdvo,
+					  SDVO_CMD_GET_OVERSCAN_H,
+					  &response, 2))
+			return false;
+
+		sdvo_state->tv.overscan_h = response;
+
+		intel_sdvo_connector->max_hscan = data_value[0];
+		intel_sdvo_connector->left =
+			drm_property_create_range(dev, 0, "left_margin", 0, data_value[0]);
+		if (!intel_sdvo_connector->left)
+			return false;
+
+		drm_object_attach_property(&connector->base,
+					   intel_sdvo_connector->left, 0);
+
+		intel_sdvo_connector->right =
+			drm_property_create_range(dev, 0, "right_margin", 0, data_value[0]);
+		if (!intel_sdvo_connector->right)
+			return false;
+
+		drm_object_attach_property(&connector->base,
+					      intel_sdvo_connector->right, 0);
+		DRM_DEBUG_KMS("h_overscan: max %d, "
+			      "default %d, current %d\n",
+			      data_value[0], data_value[1], response);
+	}
+
+	if (enhancements.overscan_v) {
+		if (!intel_sdvo_get_value(intel_sdvo,
+					  SDVO_CMD_GET_MAX_OVERSCAN_V,
+					  &data_value, 4))
+			return false;
+
+		if (!intel_sdvo_get_value(intel_sdvo,
+					  SDVO_CMD_GET_OVERSCAN_V,
+					  &response, 2))
+			return false;
+
+		sdvo_state->tv.overscan_v = response;
+
+		intel_sdvo_connector->max_vscan = data_value[0];
+		intel_sdvo_connector->top =
+			drm_property_create_range(dev, 0,
+					    "top_margin", 0, data_value[0]);
+		if (!intel_sdvo_connector->top)
+			return false;
+
+		drm_object_attach_property(&connector->base,
+					   intel_sdvo_connector->top, 0);
+
+		intel_sdvo_connector->bottom =
+			drm_property_create_range(dev, 0,
+					    "bottom_margin", 0, data_value[0]);
+		if (!intel_sdvo_connector->bottom)
+			return false;
+
+		drm_object_attach_property(&connector->base,
+					      intel_sdvo_connector->bottom, 0);
+		DRM_DEBUG_KMS("v_overscan: max %d, "
+			      "default %d, current %d\n",
+			      data_value[0], data_value[1], response);
+	}
+
+	ENHANCEMENT(&sdvo_state->tv, hpos, HPOS);
+	ENHANCEMENT(&sdvo_state->tv, vpos, VPOS);
+	ENHANCEMENT(&conn_state->tv, saturation, SATURATION);
+	ENHANCEMENT(&conn_state->tv, contrast, CONTRAST);
+	ENHANCEMENT(&conn_state->tv, hue, HUE);
+	ENHANCEMENT(&conn_state->tv, brightness, BRIGHTNESS);
+	ENHANCEMENT(&sdvo_state->tv, sharpness, SHARPNESS);
+	ENHANCEMENT(&sdvo_state->tv, flicker_filter, FLICKER_FILTER);
+	ENHANCEMENT(&sdvo_state->tv, flicker_filter_adaptive, FLICKER_FILTER_ADAPTIVE);
+	ENHANCEMENT(&sdvo_state->tv, flicker_filter_2d, FLICKER_FILTER_2D);
+	_ENHANCEMENT(sdvo_state->tv.chroma_filter, tv_chroma_filter, TV_CHROMA_FILTER);
+	_ENHANCEMENT(sdvo_state->tv.luma_filter, tv_luma_filter, TV_LUMA_FILTER);
+
+	if (enhancements.dot_crawl) {
+		if (!intel_sdvo_get_value(intel_sdvo, SDVO_CMD_GET_DOT_CRAWL, &response, 2))
+			return false;
+
+		sdvo_state->tv.dot_crawl = response & 0x1;
+		intel_sdvo_connector->dot_crawl =
+			drm_property_create_range(dev, 0, "dot_crawl", 0, 1);
+		if (!intel_sdvo_connector->dot_crawl)
+			return false;
+
+		drm_object_attach_property(&connector->base,
+					   intel_sdvo_connector->dot_crawl, 0);
+		DRM_DEBUG_KMS("dot crawl: current %d\n", response);
+	}
+
+	return true;
+}
+
+static bool
+intel_sdvo_create_enhance_property_lvds(struct intel_sdvo *intel_sdvo,
+					struct intel_sdvo_connector *intel_sdvo_connector,
+					struct intel_sdvo_enhancements_reply enhancements)
+{
+	struct drm_device *dev = intel_sdvo->base.base.dev;
+	struct drm_connector *connector = &intel_sdvo_connector->base.base;
+	u16 response, data_value[2];
+
+	ENHANCEMENT(&connector->state->tv, brightness, BRIGHTNESS);
+
+	return true;
+}
+#undef ENHANCEMENT
+#undef _ENHANCEMENT
+
+static bool intel_sdvo_create_enhance_property(struct intel_sdvo *intel_sdvo,
+					       struct intel_sdvo_connector *intel_sdvo_connector)
+{
+	union {
+		struct intel_sdvo_enhancements_reply reply;
+		u16 response;
+	} enhancements;
+
+	BUILD_BUG_ON(sizeof(enhancements) != 2);
+
+	if (!intel_sdvo_get_value(intel_sdvo,
+				  SDVO_CMD_GET_SUPPORTED_ENHANCEMENTS,
+				  &enhancements, sizeof(enhancements)) ||
+	    enhancements.response == 0) {
+		DRM_DEBUG_KMS("No enhancement is supported\n");
+		return true;
+	}
+
+	if (IS_TV(intel_sdvo_connector))
+		return intel_sdvo_create_enhance_property_tv(intel_sdvo, intel_sdvo_connector, enhancements.reply);
+	else if (IS_LVDS(intel_sdvo_connector))
+		return intel_sdvo_create_enhance_property_lvds(intel_sdvo, intel_sdvo_connector, enhancements.reply);
+	else
+		return true;
+}
+
+static int intel_sdvo_ddc_proxy_xfer(struct i2c_adapter *adapter,
+				     struct i2c_msg *msgs,
+				     int num)
+{
+	struct intel_sdvo *sdvo = adapter->algo_data;
+
+	if (!__intel_sdvo_set_control_bus_switch(sdvo, sdvo->ddc_bus))
+		return -EIO;
+
+	return sdvo->i2c->algo->master_xfer(sdvo->i2c, msgs, num);
+}
+
+static u32 intel_sdvo_ddc_proxy_func(struct i2c_adapter *adapter)
+{
+	struct intel_sdvo *sdvo = adapter->algo_data;
+	return sdvo->i2c->algo->functionality(sdvo->i2c);
+}
+
+static const struct i2c_algorithm intel_sdvo_ddc_proxy = {
+	.master_xfer	= intel_sdvo_ddc_proxy_xfer,
+	.functionality	= intel_sdvo_ddc_proxy_func
+};
+
+static void proxy_lock_bus(struct i2c_adapter *adapter,
+			   unsigned int flags)
+{
+	struct intel_sdvo *sdvo = adapter->algo_data;
+	sdvo->i2c->lock_ops->lock_bus(sdvo->i2c, flags);
+}
+
+static int proxy_trylock_bus(struct i2c_adapter *adapter,
+			     unsigned int flags)
+{
+	struct intel_sdvo *sdvo = adapter->algo_data;
+	return sdvo->i2c->lock_ops->trylock_bus(sdvo->i2c, flags);
+}
+
+static void proxy_unlock_bus(struct i2c_adapter *adapter,
+			     unsigned int flags)
+{
+	struct intel_sdvo *sdvo = adapter->algo_data;
+	sdvo->i2c->lock_ops->unlock_bus(sdvo->i2c, flags);
+}
+
+static const struct i2c_lock_operations proxy_lock_ops = {
+	.lock_bus =    proxy_lock_bus,
+	.trylock_bus = proxy_trylock_bus,
+	.unlock_bus =  proxy_unlock_bus,
+};
+
+static bool
+intel_sdvo_init_ddc_proxy(struct intel_sdvo *sdvo,
+			  struct drm_i915_private *dev_priv)
+{
+	struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
+
+	sdvo->ddc.owner = THIS_MODULE;
+	sdvo->ddc.class = I2C_CLASS_DDC;
+	snprintf(sdvo->ddc.name, I2C_NAME_SIZE, "SDVO DDC proxy");
+	sdvo->ddc.dev.parent = &pdev->dev;
+	sdvo->ddc.algo_data = sdvo;
+	sdvo->ddc.algo = &intel_sdvo_ddc_proxy;
+	sdvo->ddc.lock_ops = &proxy_lock_ops;
+
+	return i2c_add_adapter(&sdvo->ddc) == 0;
+}
+
+static void assert_sdvo_port_valid(const struct drm_i915_private *dev_priv,
+				   enum port port)
+{
+	if (HAS_PCH_SPLIT(dev_priv))
+		drm_WARN_ON(&dev_priv->drm, port != PORT_B);
+	else
+		drm_WARN_ON(&dev_priv->drm, port != PORT_B && port != PORT_C);
+}
+
+bool intel_sdvo_init(struct drm_i915_private *dev_priv,
+		     i915_reg_t sdvo_reg, enum port port)
+{
+	struct intel_encoder *intel_encoder;
+	struct intel_sdvo *intel_sdvo;
+	int i;
+
+	assert_sdvo_port_valid(dev_priv, port);
+
+	intel_sdvo = kzalloc(sizeof(*intel_sdvo), GFP_KERNEL);
+	if (!intel_sdvo)
+		return false;
+
+	intel_sdvo->sdvo_reg = sdvo_reg;
+	intel_sdvo->port = port;
+	intel_sdvo->slave_addr =
+		intel_sdvo_get_slave_addr(dev_priv, intel_sdvo) >> 1;
+	intel_sdvo_select_i2c_bus(dev_priv, intel_sdvo);
+	if (!intel_sdvo_init_ddc_proxy(intel_sdvo, dev_priv))
+		goto err_i2c_bus;
+
+	/* encoder type will be decided later */
+	intel_encoder = &intel_sdvo->base;
+	intel_encoder->type = INTEL_OUTPUT_SDVO;
+	intel_encoder->power_domain = POWER_DOMAIN_PORT_OTHER;
+	intel_encoder->port = port;
+	drm_encoder_init(&dev_priv->drm, &intel_encoder->base,
+			 &intel_sdvo_enc_funcs, 0,
+			 "SDVO %c", port_name(port));
+
+	/* Read the regs to test if we can talk to the device */
+	for (i = 0; i < 0x40; i++) {
+		u8 byte;
+
+		if (!intel_sdvo_read_byte(intel_sdvo, i, &byte)) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "No SDVO device found on %s\n",
+				    SDVO_NAME(intel_sdvo));
+			goto err;
+		}
+	}
+
+	intel_encoder->compute_config = intel_sdvo_compute_config;
+	if (HAS_PCH_SPLIT(dev_priv)) {
+		intel_encoder->disable = pch_disable_sdvo;
+		intel_encoder->post_disable = pch_post_disable_sdvo;
+	} else {
+		intel_encoder->disable = intel_disable_sdvo;
+	}
+	intel_encoder->pre_enable = intel_sdvo_pre_enable;
+	intel_encoder->enable = intel_enable_sdvo;
+	intel_encoder->get_hw_state = intel_sdvo_get_hw_state;
+	intel_encoder->get_config = intel_sdvo_get_config;
+
+	/* In default case sdvo lvds is false */
+	if (!intel_sdvo_get_capabilities(intel_sdvo, &intel_sdvo->caps))
+		goto err;
+
+	intel_sdvo->colorimetry_cap =
+		intel_sdvo_get_colorimetry_cap(intel_sdvo);
+
+	if (intel_sdvo_output_setup(intel_sdvo,
+				    intel_sdvo->caps.output_flags) != true) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "SDVO output failed to setup on %s\n",
+			    SDVO_NAME(intel_sdvo));
+		/* Output_setup can leave behind connectors! */
+		goto err_output;
+	}
+
+	/*
+	 * Only enable the hotplug irq if we need it, to work around noisy
+	 * hotplug lines.
+	 */
+	if (intel_sdvo->hotplug_active) {
+		if (intel_sdvo->port == PORT_B)
+			intel_encoder->hpd_pin = HPD_SDVO_B;
+		else
+			intel_encoder->hpd_pin = HPD_SDVO_C;
+	}
+
+	/*
+	 * Cloning SDVO with anything is often impossible, since the SDVO
+	 * encoder can request a special input timing mode. And even if that's
+	 * not the case we have evidence that cloning a plain unscaled mode with
+	 * VGA doesn't really work. Furthermore the cloning flags are way too
+	 * simplistic anyway to express such constraints, so just give up on
+	 * cloning for SDVO encoders.
+	 */
+	intel_sdvo->base.cloneable = 0;
+
+	/* Set the input timing to the screen. Assume always input 0. */
+	if (!intel_sdvo_set_target_input(intel_sdvo))
+		goto err_output;
+
+	if (!intel_sdvo_get_input_pixel_clock_range(intel_sdvo,
+						    &intel_sdvo->pixel_clock_min,
+						    &intel_sdvo->pixel_clock_max))
+		goto err_output;
+
+	drm_dbg_kms(&dev_priv->drm, "%s device VID/DID: %02X:%02X.%02X, "
+			"clock range %dMHz - %dMHz, "
+			"input 1: %c, input 2: %c, "
+			"output 1: %c, output 2: %c\n",
+			SDVO_NAME(intel_sdvo),
+			intel_sdvo->caps.vendor_id, intel_sdvo->caps.device_id,
+			intel_sdvo->caps.device_rev_id,
+			intel_sdvo->pixel_clock_min / 1000,
+			intel_sdvo->pixel_clock_max / 1000,
+			(intel_sdvo->caps.sdvo_inputs_mask & 0x1) ? 'Y' : 'N',
+			(intel_sdvo->caps.sdvo_inputs_mask & 0x2) ? 'Y' : 'N',
+			/* check currently supported outputs */
+			intel_sdvo->caps.output_flags &
+			(SDVO_OUTPUT_TMDS0 | SDVO_OUTPUT_RGB0) ? 'Y' : 'N',
+			intel_sdvo->caps.output_flags &
+			(SDVO_OUTPUT_TMDS1 | SDVO_OUTPUT_RGB1) ? 'Y' : 'N');
+	return true;
+
+err_output:
+	intel_sdvo_output_cleanup(intel_sdvo);
+
+err:
+	drm_encoder_cleanup(&intel_encoder->base);
+	i2c_del_adapter(&intel_sdvo->ddc);
+err_i2c_bus:
+	intel_sdvo_unselect_i2c_bus(intel_sdvo);
+	kfree(intel_sdvo);
+
+	return false;
+}
diff --git a/drivers/gpu/drm/i915/display/intel_sdvo.h b/drivers/gpu/drm/i915/display/intel_sdvo.h
new file mode 100644
index 000000000..2868852c8
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_sdvo.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_SDVO_H__
+#define __INTEL_SDVO_H__
+
+#include <linux/types.h>
+
+#include "i915_reg_defs.h"
+
+struct drm_i915_private;
+enum pipe;
+enum port;
+
+bool intel_sdvo_port_enabled(struct drm_i915_private *dev_priv,
+			     i915_reg_t sdvo_reg, enum pipe *pipe);
+bool intel_sdvo_init(struct drm_i915_private *dev_priv,
+		     i915_reg_t reg, enum port port);
+
+#endif /* __INTEL_SDVO_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_sdvo_regs.h b/drivers/gpu/drm/i915/display/intel_sdvo_regs.h
new file mode 100644
index 000000000..74dc6c042
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_sdvo_regs.h
@@ -0,0 +1,741 @@
+/*
+ * Copyright © 2006-2007 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *	Eric Anholt <eric@anholt.net>
+ */
+
+#ifndef __INTEL_SDVO_REGS_H__
+#define __INTEL_SDVO_REGS_H__
+
+#include <linux/compiler.h>
+#include <linux/types.h>
+
+/*
+ * SDVO command definitions and structures.
+ */
+
+#define SDVO_OUTPUT_FIRST   (0)
+#define SDVO_OUTPUT_TMDS0   (1 << 0)
+#define SDVO_OUTPUT_RGB0    (1 << 1)
+#define SDVO_OUTPUT_CVBS0   (1 << 2)
+#define SDVO_OUTPUT_SVID0   (1 << 3)
+#define SDVO_OUTPUT_YPRPB0  (1 << 4)
+#define SDVO_OUTPUT_SCART0  (1 << 5)
+#define SDVO_OUTPUT_LVDS0   (1 << 6)
+#define SDVO_OUTPUT_TMDS1   (1 << 8)
+#define SDVO_OUTPUT_RGB1    (1 << 9)
+#define SDVO_OUTPUT_CVBS1   (1 << 10)
+#define SDVO_OUTPUT_SVID1   (1 << 11)
+#define SDVO_OUTPUT_YPRPB1  (1 << 12)
+#define SDVO_OUTPUT_SCART1  (1 << 13)
+#define SDVO_OUTPUT_LVDS1   (1 << 14)
+#define SDVO_OUTPUT_LAST    (14)
+
+struct intel_sdvo_caps {
+	u8 vendor_id;
+	u8 device_id;
+	u8 device_rev_id;
+	u8 sdvo_version_major;
+	u8 sdvo_version_minor;
+	unsigned int sdvo_inputs_mask:2;
+	unsigned int smooth_scaling:1;
+	unsigned int sharp_scaling:1;
+	unsigned int up_scaling:1;
+	unsigned int down_scaling:1;
+	unsigned int stall_support:1;
+	unsigned int pad:1;
+	u16 output_flags;
+} __packed;
+
+/* Note: SDVO detailed timing flags match EDID misc flags. */
+#define DTD_FLAG_HSYNC_POSITIVE (1 << 1)
+#define DTD_FLAG_VSYNC_POSITIVE (1 << 2)
+#define DTD_FLAG_INTERLACE	(1 << 7)
+
+/* This matches the EDID DTD structure, more or less */
+struct intel_sdvo_dtd {
+	struct {
+		u16 clock;	/* pixel clock, in 10kHz units */
+		u8 h_active;	/* lower 8 bits (pixels) */
+		u8 h_blank;	/* lower 8 bits (pixels) */
+		u8 h_high;	/* upper 4 bits each h_active, h_blank */
+		u8 v_active;	/* lower 8 bits (lines) */
+		u8 v_blank;	/* lower 8 bits (lines) */
+		u8 v_high;	/* upper 4 bits each v_active, v_blank */
+	} part1;
+
+	struct {
+		u8 h_sync_off;	/* lower 8 bits, from hblank start */
+		u8 h_sync_width;	/* lower 8 bits (pixels) */
+		/* lower 4 bits each vsync offset, vsync width */
+		u8 v_sync_off_width;
+		/*
+		* 2 high bits of hsync offset, 2 high bits of hsync width,
+		* bits 4-5 of vsync offset, and 2 high bits of vsync width.
+		*/
+		u8 sync_off_width_high;
+		u8 dtd_flags;
+		u8 sdvo_flags;
+		/* bits 6-7 of vsync offset at bits 6-7 */
+		u8 v_sync_off_high;
+		u8 reserved;
+	} part2;
+} __packed;
+
+struct intel_sdvo_pixel_clock_range {
+	u16 min;	/* pixel clock, in 10kHz units */
+	u16 max;	/* pixel clock, in 10kHz units */
+} __packed;
+
+struct intel_sdvo_preferred_input_timing_args {
+	u16 clock;
+	u16 width;
+	u16 height;
+	u8	interlace:1;
+	u8	scaled:1;
+	u8	pad:6;
+} __packed;
+
+/* I2C registers for SDVO */
+#define SDVO_I2C_ARG_0				0x07
+#define SDVO_I2C_ARG_1				0x06
+#define SDVO_I2C_ARG_2				0x05
+#define SDVO_I2C_ARG_3				0x04
+#define SDVO_I2C_ARG_4				0x03
+#define SDVO_I2C_ARG_5				0x02
+#define SDVO_I2C_ARG_6				0x01
+#define SDVO_I2C_ARG_7				0x00
+#define SDVO_I2C_OPCODE				0x08
+#define SDVO_I2C_CMD_STATUS			0x09
+#define SDVO_I2C_RETURN_0			0x0a
+#define SDVO_I2C_RETURN_1			0x0b
+#define SDVO_I2C_RETURN_2			0x0c
+#define SDVO_I2C_RETURN_3			0x0d
+#define SDVO_I2C_RETURN_4			0x0e
+#define SDVO_I2C_RETURN_5			0x0f
+#define SDVO_I2C_RETURN_6			0x10
+#define SDVO_I2C_RETURN_7			0x11
+#define SDVO_I2C_VENDOR_BEGIN			0x20
+
+/* Status results */
+#define SDVO_CMD_STATUS_POWER_ON		0x0
+#define SDVO_CMD_STATUS_SUCCESS			0x1
+#define SDVO_CMD_STATUS_NOTSUPP			0x2
+#define SDVO_CMD_STATUS_INVALID_ARG		0x3
+#define SDVO_CMD_STATUS_PENDING			0x4
+#define SDVO_CMD_STATUS_TARGET_NOT_SPECIFIED	0x5
+#define SDVO_CMD_STATUS_SCALING_NOT_SUPP	0x6
+
+/* SDVO commands, argument/result registers */
+
+#define SDVO_CMD_RESET					0x01
+
+/* Returns a struct intel_sdvo_caps */
+#define SDVO_CMD_GET_DEVICE_CAPS			0x02
+
+#define SDVO_CMD_GET_FIRMWARE_REV			0x86
+# define SDVO_DEVICE_FIRMWARE_MINOR			SDVO_I2C_RETURN_0
+# define SDVO_DEVICE_FIRMWARE_MAJOR			SDVO_I2C_RETURN_1
+# define SDVO_DEVICE_FIRMWARE_PATCH			SDVO_I2C_RETURN_2
+
+/*
+ * Reports which inputs are trained (managed to sync).
+ *
+ * Devices must have trained within 2 vsyncs of a mode change.
+ */
+#define SDVO_CMD_GET_TRAINED_INPUTS			0x03
+struct intel_sdvo_get_trained_inputs_response {
+	unsigned int input0_trained:1;
+	unsigned int input1_trained:1;
+	unsigned int pad:6;
+} __packed;
+
+/* Returns a struct intel_sdvo_output_flags of active outputs. */
+#define SDVO_CMD_GET_ACTIVE_OUTPUTS			0x04
+
+/*
+ * Sets the current set of active outputs.
+ *
+ * Takes a struct intel_sdvo_output_flags.  Must be preceded by a SET_IN_OUT_MAP
+ * on multi-output devices.
+ */
+#define SDVO_CMD_SET_ACTIVE_OUTPUTS			0x05
+
+/*
+ * Returns the current mapping of SDVO inputs to outputs on the device.
+ *
+ * Returns two struct intel_sdvo_output_flags structures.
+ */
+#define SDVO_CMD_GET_IN_OUT_MAP				0x06
+struct intel_sdvo_in_out_map {
+	u16 in0, in1;
+};
+
+/*
+ * Sets the current mapping of SDVO inputs to outputs on the device.
+ *
+ * Takes two struct i380_sdvo_output_flags structures.
+ */
+#define SDVO_CMD_SET_IN_OUT_MAP				0x07
+
+/*
+ * Returns a struct intel_sdvo_output_flags of attached displays.
+ */
+#define SDVO_CMD_GET_ATTACHED_DISPLAYS			0x0b
+
+/*
+ * Returns a struct intel_sdvo_ouptut_flags of displays supporting hot plugging.
+ */
+#define SDVO_CMD_GET_HOT_PLUG_SUPPORT			0x0c
+
+/*
+ * Takes a struct intel_sdvo_output_flags.
+ */
+#define SDVO_CMD_SET_ACTIVE_HOT_PLUG			0x0d
+
+/*
+ * Returns a struct intel_sdvo_output_flags of displays with hot plug
+ * interrupts enabled.
+ */
+#define SDVO_CMD_GET_ACTIVE_HOT_PLUG			0x0e
+
+#define SDVO_CMD_GET_INTERRUPT_EVENT_SOURCE		0x0f
+struct intel_sdvo_get_interrupt_event_source_response {
+	u16 interrupt_status;
+	unsigned int ambient_light_interrupt:1;
+	unsigned int hdmi_audio_encrypt_change:1;
+	unsigned int pad:6;
+} __packed;
+
+/*
+ * Selects which input is affected by future input commands.
+ *
+ * Commands affected include SET_INPUT_TIMINGS_PART[12],
+ * GET_INPUT_TIMINGS_PART[12], GET_PREFERRED_INPUT_TIMINGS_PART[12],
+ * GET_INPUT_PIXEL_CLOCK_RANGE, and CREATE_PREFERRED_INPUT_TIMINGS.
+ */
+#define SDVO_CMD_SET_TARGET_INPUT			0x10
+struct intel_sdvo_set_target_input_args {
+	unsigned int target_1:1;
+	unsigned int pad:7;
+} __packed;
+
+/*
+ * Takes a struct intel_sdvo_output_flags of which outputs are targeted by
+ * future output commands.
+ *
+ * Affected commands inclue SET_OUTPUT_TIMINGS_PART[12],
+ * GET_OUTPUT_TIMINGS_PART[12], and GET_OUTPUT_PIXEL_CLOCK_RANGE.
+ */
+#define SDVO_CMD_SET_TARGET_OUTPUT			0x11
+
+#define SDVO_CMD_GET_INPUT_TIMINGS_PART1		0x12
+#define SDVO_CMD_GET_INPUT_TIMINGS_PART2		0x13
+#define SDVO_CMD_SET_INPUT_TIMINGS_PART1		0x14
+#define SDVO_CMD_SET_INPUT_TIMINGS_PART2		0x15
+#define SDVO_CMD_SET_OUTPUT_TIMINGS_PART1		0x16
+#define SDVO_CMD_SET_OUTPUT_TIMINGS_PART2		0x17
+#define SDVO_CMD_GET_OUTPUT_TIMINGS_PART1		0x18
+#define SDVO_CMD_GET_OUTPUT_TIMINGS_PART2		0x19
+/* Part 1 */
+# define SDVO_DTD_CLOCK_LOW				SDVO_I2C_ARG_0
+# define SDVO_DTD_CLOCK_HIGH				SDVO_I2C_ARG_1
+# define SDVO_DTD_H_ACTIVE				SDVO_I2C_ARG_2
+# define SDVO_DTD_H_BLANK				SDVO_I2C_ARG_3
+# define SDVO_DTD_H_HIGH				SDVO_I2C_ARG_4
+# define SDVO_DTD_V_ACTIVE				SDVO_I2C_ARG_5
+# define SDVO_DTD_V_BLANK				SDVO_I2C_ARG_6
+# define SDVO_DTD_V_HIGH				SDVO_I2C_ARG_7
+/* Part 2 */
+# define SDVO_DTD_HSYNC_OFF				SDVO_I2C_ARG_0
+# define SDVO_DTD_HSYNC_WIDTH				SDVO_I2C_ARG_1
+# define SDVO_DTD_VSYNC_OFF_WIDTH			SDVO_I2C_ARG_2
+# define SDVO_DTD_SYNC_OFF_WIDTH_HIGH			SDVO_I2C_ARG_3
+# define SDVO_DTD_DTD_FLAGS				SDVO_I2C_ARG_4
+# define SDVO_DTD_DTD_FLAG_INTERLACED				(1 << 7)
+# define SDVO_DTD_DTD_FLAG_STEREO_MASK				(3 << 5)
+# define SDVO_DTD_DTD_FLAG_INPUT_MASK				(3 << 3)
+# define SDVO_DTD_DTD_FLAG_SYNC_MASK				(3 << 1)
+# define SDVO_DTD_SDVO_FLAS				SDVO_I2C_ARG_5
+# define SDVO_DTD_SDVO_FLAG_STALL				(1 << 7)
+# define SDVO_DTD_SDVO_FLAG_CENTERED				(0 << 6)
+# define SDVO_DTD_SDVO_FLAG_UPPER_LEFT				(1 << 6)
+# define SDVO_DTD_SDVO_FLAG_SCALING_MASK			(3 << 4)
+# define SDVO_DTD_SDVO_FLAG_SCALING_NONE			(0 << 4)
+# define SDVO_DTD_SDVO_FLAG_SCALING_SHARP			(1 << 4)
+# define SDVO_DTD_SDVO_FLAG_SCALING_SMOOTH			(2 << 4)
+# define SDVO_DTD_VSYNC_OFF_HIGH			SDVO_I2C_ARG_6
+
+/*
+ * Generates a DTD based on the given width, height, and flags.
+ *
+ * This will be supported by any device supporting scaling or interlaced
+ * modes.
+ */
+#define SDVO_CMD_CREATE_PREFERRED_INPUT_TIMING		0x1a
+# define SDVO_PREFERRED_INPUT_TIMING_CLOCK_LOW		SDVO_I2C_ARG_0
+# define SDVO_PREFERRED_INPUT_TIMING_CLOCK_HIGH		SDVO_I2C_ARG_1
+# define SDVO_PREFERRED_INPUT_TIMING_WIDTH_LOW		SDVO_I2C_ARG_2
+# define SDVO_PREFERRED_INPUT_TIMING_WIDTH_HIGH		SDVO_I2C_ARG_3
+# define SDVO_PREFERRED_INPUT_TIMING_HEIGHT_LOW		SDVO_I2C_ARG_4
+# define SDVO_PREFERRED_INPUT_TIMING_HEIGHT_HIGH	SDVO_I2C_ARG_5
+# define SDVO_PREFERRED_INPUT_TIMING_FLAGS		SDVO_I2C_ARG_6
+# define SDVO_PREFERRED_INPUT_TIMING_FLAGS_INTERLACED		(1 << 0)
+# define SDVO_PREFERRED_INPUT_TIMING_FLAGS_SCALED		(1 << 1)
+
+#define SDVO_CMD_GET_PREFERRED_INPUT_TIMING_PART1	0x1b
+#define SDVO_CMD_GET_PREFERRED_INPUT_TIMING_PART2	0x1c
+
+/* Returns a struct intel_sdvo_pixel_clock_range */
+#define SDVO_CMD_GET_INPUT_PIXEL_CLOCK_RANGE		0x1d
+/* Returns a struct intel_sdvo_pixel_clock_range */
+#define SDVO_CMD_GET_OUTPUT_PIXEL_CLOCK_RANGE		0x1e
+
+/* Returns a byte bitfield containing SDVO_CLOCK_RATE_MULT_* flags */
+#define SDVO_CMD_GET_SUPPORTED_CLOCK_RATE_MULTS		0x1f
+
+/* Returns a byte containing a SDVO_CLOCK_RATE_MULT_* flag */
+#define SDVO_CMD_GET_CLOCK_RATE_MULT			0x20
+/* Takes a byte containing a SDVO_CLOCK_RATE_MULT_* flag */
+#define SDVO_CMD_SET_CLOCK_RATE_MULT			0x21
+# define SDVO_CLOCK_RATE_MULT_1X				(1 << 0)
+# define SDVO_CLOCK_RATE_MULT_2X				(1 << 1)
+# define SDVO_CLOCK_RATE_MULT_4X				(1 << 3)
+
+#define SDVO_CMD_GET_SUPPORTED_TV_FORMATS		0x27
+/* 6 bytes of bit flags for TV formats shared by all TV format functions */
+struct intel_sdvo_tv_format {
+	unsigned int ntsc_m:1;
+	unsigned int ntsc_j:1;
+	unsigned int ntsc_443:1;
+	unsigned int pal_b:1;
+	unsigned int pal_d:1;
+	unsigned int pal_g:1;
+	unsigned int pal_h:1;
+	unsigned int pal_i:1;
+
+	unsigned int pal_m:1;
+	unsigned int pal_n:1;
+	unsigned int pal_nc:1;
+	unsigned int pal_60:1;
+	unsigned int secam_b:1;
+	unsigned int secam_d:1;
+	unsigned int secam_g:1;
+	unsigned int secam_k:1;
+
+	unsigned int secam_k1:1;
+	unsigned int secam_l:1;
+	unsigned int secam_60:1;
+	unsigned int hdtv_std_smpte_240m_1080i_59:1;
+	unsigned int hdtv_std_smpte_240m_1080i_60:1;
+	unsigned int hdtv_std_smpte_260m_1080i_59:1;
+	unsigned int hdtv_std_smpte_260m_1080i_60:1;
+	unsigned int hdtv_std_smpte_274m_1080i_50:1;
+
+	unsigned int hdtv_std_smpte_274m_1080i_59:1;
+	unsigned int hdtv_std_smpte_274m_1080i_60:1;
+	unsigned int hdtv_std_smpte_274m_1080p_23:1;
+	unsigned int hdtv_std_smpte_274m_1080p_24:1;
+	unsigned int hdtv_std_smpte_274m_1080p_25:1;
+	unsigned int hdtv_std_smpte_274m_1080p_29:1;
+	unsigned int hdtv_std_smpte_274m_1080p_30:1;
+	unsigned int hdtv_std_smpte_274m_1080p_50:1;
+
+	unsigned int hdtv_std_smpte_274m_1080p_59:1;
+	unsigned int hdtv_std_smpte_274m_1080p_60:1;
+	unsigned int hdtv_std_smpte_295m_1080i_50:1;
+	unsigned int hdtv_std_smpte_295m_1080p_50:1;
+	unsigned int hdtv_std_smpte_296m_720p_59:1;
+	unsigned int hdtv_std_smpte_296m_720p_60:1;
+	unsigned int hdtv_std_smpte_296m_720p_50:1;
+	unsigned int hdtv_std_smpte_293m_480p_59:1;
+
+	unsigned int hdtv_std_smpte_170m_480i_59:1;
+	unsigned int hdtv_std_iturbt601_576i_50:1;
+	unsigned int hdtv_std_iturbt601_576p_50:1;
+	unsigned int hdtv_std_eia_7702a_480i_60:1;
+	unsigned int hdtv_std_eia_7702a_480p_60:1;
+	unsigned int pad:3;
+} __packed;
+
+#define SDVO_CMD_GET_TV_FORMAT				0x28
+
+#define SDVO_CMD_SET_TV_FORMAT				0x29
+
+/* Returns the resolutiosn that can be used with the given TV format */
+#define SDVO_CMD_GET_SDTV_RESOLUTION_SUPPORT		0x83
+struct intel_sdvo_sdtv_resolution_request {
+	unsigned int ntsc_m:1;
+	unsigned int ntsc_j:1;
+	unsigned int ntsc_443:1;
+	unsigned int pal_b:1;
+	unsigned int pal_d:1;
+	unsigned int pal_g:1;
+	unsigned int pal_h:1;
+	unsigned int pal_i:1;
+
+	unsigned int pal_m:1;
+	unsigned int pal_n:1;
+	unsigned int pal_nc:1;
+	unsigned int pal_60:1;
+	unsigned int secam_b:1;
+	unsigned int secam_d:1;
+	unsigned int secam_g:1;
+	unsigned int secam_k:1;
+
+	unsigned int secam_k1:1;
+	unsigned int secam_l:1;
+	unsigned int secam_60:1;
+	unsigned int pad:5;
+} __packed;
+
+struct intel_sdvo_sdtv_resolution_reply {
+	unsigned int res_320x200:1;
+	unsigned int res_320x240:1;
+	unsigned int res_400x300:1;
+	unsigned int res_640x350:1;
+	unsigned int res_640x400:1;
+	unsigned int res_640x480:1;
+	unsigned int res_704x480:1;
+	unsigned int res_704x576:1;
+
+	unsigned int res_720x350:1;
+	unsigned int res_720x400:1;
+	unsigned int res_720x480:1;
+	unsigned int res_720x540:1;
+	unsigned int res_720x576:1;
+	unsigned int res_768x576:1;
+	unsigned int res_800x600:1;
+	unsigned int res_832x624:1;
+
+	unsigned int res_920x766:1;
+	unsigned int res_1024x768:1;
+	unsigned int res_1280x1024:1;
+	unsigned int pad:5;
+} __packed;
+
+/* Get supported resolution with squire pixel aspect ratio that can be
+   scaled for the requested HDTV format */
+#define SDVO_CMD_GET_SCALED_HDTV_RESOLUTION_SUPPORT		0x85
+
+struct intel_sdvo_hdtv_resolution_request {
+	unsigned int hdtv_std_smpte_240m_1080i_59:1;
+	unsigned int hdtv_std_smpte_240m_1080i_60:1;
+	unsigned int hdtv_std_smpte_260m_1080i_59:1;
+	unsigned int hdtv_std_smpte_260m_1080i_60:1;
+	unsigned int hdtv_std_smpte_274m_1080i_50:1;
+	unsigned int hdtv_std_smpte_274m_1080i_59:1;
+	unsigned int hdtv_std_smpte_274m_1080i_60:1;
+	unsigned int hdtv_std_smpte_274m_1080p_23:1;
+
+	unsigned int hdtv_std_smpte_274m_1080p_24:1;
+	unsigned int hdtv_std_smpte_274m_1080p_25:1;
+	unsigned int hdtv_std_smpte_274m_1080p_29:1;
+	unsigned int hdtv_std_smpte_274m_1080p_30:1;
+	unsigned int hdtv_std_smpte_274m_1080p_50:1;
+	unsigned int hdtv_std_smpte_274m_1080p_59:1;
+	unsigned int hdtv_std_smpte_274m_1080p_60:1;
+	unsigned int hdtv_std_smpte_295m_1080i_50:1;
+
+	unsigned int hdtv_std_smpte_295m_1080p_50:1;
+	unsigned int hdtv_std_smpte_296m_720p_59:1;
+	unsigned int hdtv_std_smpte_296m_720p_60:1;
+	unsigned int hdtv_std_smpte_296m_720p_50:1;
+	unsigned int hdtv_std_smpte_293m_480p_59:1;
+	unsigned int hdtv_std_smpte_170m_480i_59:1;
+	unsigned int hdtv_std_iturbt601_576i_50:1;
+	unsigned int hdtv_std_iturbt601_576p_50:1;
+
+	unsigned int hdtv_std_eia_7702a_480i_60:1;
+	unsigned int hdtv_std_eia_7702a_480p_60:1;
+	unsigned int pad:6;
+} __packed;
+
+struct intel_sdvo_hdtv_resolution_reply {
+	unsigned int res_640x480:1;
+	unsigned int res_800x600:1;
+	unsigned int res_1024x768:1;
+	unsigned int res_1280x960:1;
+	unsigned int res_1400x1050:1;
+	unsigned int res_1600x1200:1;
+	unsigned int res_1920x1440:1;
+	unsigned int res_2048x1536:1;
+
+	unsigned int res_2560x1920:1;
+	unsigned int res_3200x2400:1;
+	unsigned int res_3840x2880:1;
+	unsigned int pad1:5;
+
+	unsigned int res_848x480:1;
+	unsigned int res_1064x600:1;
+	unsigned int res_1280x720:1;
+	unsigned int res_1360x768:1;
+	unsigned int res_1704x960:1;
+	unsigned int res_1864x1050:1;
+	unsigned int res_1920x1080:1;
+	unsigned int res_2128x1200:1;
+
+	unsigned int res_2560x1400:1;
+	unsigned int res_2728x1536:1;
+	unsigned int res_3408x1920:1;
+	unsigned int res_4264x2400:1;
+	unsigned int res_5120x2880:1;
+	unsigned int pad2:3;
+
+	unsigned int res_768x480:1;
+	unsigned int res_960x600:1;
+	unsigned int res_1152x720:1;
+	unsigned int res_1124x768:1;
+	unsigned int res_1536x960:1;
+	unsigned int res_1680x1050:1;
+	unsigned int res_1728x1080:1;
+	unsigned int res_1920x1200:1;
+
+	unsigned int res_2304x1440:1;
+	unsigned int res_2456x1536:1;
+	unsigned int res_3072x1920:1;
+	unsigned int res_3840x2400:1;
+	unsigned int res_4608x2880:1;
+	unsigned int pad3:3;
+
+	unsigned int res_1280x1024:1;
+	unsigned int pad4:7;
+
+	unsigned int res_1280x768:1;
+	unsigned int pad5:7;
+} __packed;
+
+/* Get supported power state returns info for encoder and monitor, rely on
+   last SetTargetInput and SetTargetOutput calls */
+#define SDVO_CMD_GET_SUPPORTED_POWER_STATES		0x2a
+/* Get power state returns info for encoder and monitor, rely on last
+   SetTargetInput and SetTargetOutput calls */
+#define SDVO_CMD_GET_POWER_STATE			0x2b
+#define SDVO_CMD_GET_ENCODER_POWER_STATE		0x2b
+#define SDVO_CMD_SET_ENCODER_POWER_STATE		0x2c
+# define SDVO_ENCODER_STATE_ON					(1 << 0)
+# define SDVO_ENCODER_STATE_STANDBY				(1 << 1)
+# define SDVO_ENCODER_STATE_SUSPEND				(1 << 2)
+# define SDVO_ENCODER_STATE_OFF					(1 << 3)
+# define SDVO_MONITOR_STATE_ON					(1 << 4)
+# define SDVO_MONITOR_STATE_STANDBY				(1 << 5)
+# define SDVO_MONITOR_STATE_SUSPEND				(1 << 6)
+# define SDVO_MONITOR_STATE_OFF					(1 << 7)
+
+#define SDVO_CMD_GET_MAX_PANEL_POWER_SEQUENCING		0x2d
+#define SDVO_CMD_GET_PANEL_POWER_SEQUENCING		0x2e
+#define SDVO_CMD_SET_PANEL_POWER_SEQUENCING		0x2f
+/*
+ * The panel power sequencing parameters are in units of milliseconds.
+ * The high fields are bits 8:9 of the 10-bit values.
+ */
+struct sdvo_panel_power_sequencing {
+	u8 t0;
+	u8 t1;
+	u8 t2;
+	u8 t3;
+	u8 t4;
+
+	unsigned int t0_high:2;
+	unsigned int t1_high:2;
+	unsigned int t2_high:2;
+	unsigned int t3_high:2;
+
+	unsigned int t4_high:2;
+	unsigned int pad:6;
+} __packed;
+
+#define SDVO_CMD_GET_MAX_BACKLIGHT_LEVEL		0x30
+struct sdvo_max_backlight_reply {
+	u8 max_value;
+	u8 default_value;
+} __packed;
+
+#define SDVO_CMD_GET_BACKLIGHT_LEVEL			0x31
+#define SDVO_CMD_SET_BACKLIGHT_LEVEL			0x32
+
+#define SDVO_CMD_GET_AMBIENT_LIGHT			0x33
+struct sdvo_get_ambient_light_reply {
+	u16 trip_low;
+	u16 trip_high;
+	u16 value;
+} __packed;
+#define SDVO_CMD_SET_AMBIENT_LIGHT			0x34
+struct sdvo_set_ambient_light_reply {
+	u16 trip_low;
+	u16 trip_high;
+	unsigned int enable:1;
+	unsigned int pad:7;
+} __packed;
+
+/* Set display power state */
+#define SDVO_CMD_SET_DISPLAY_POWER_STATE		0x7d
+# define SDVO_DISPLAY_STATE_ON				(1 << 0)
+# define SDVO_DISPLAY_STATE_STANDBY			(1 << 1)
+# define SDVO_DISPLAY_STATE_SUSPEND			(1 << 2)
+# define SDVO_DISPLAY_STATE_OFF				(1 << 3)
+
+#define SDVO_CMD_GET_SUPPORTED_ENHANCEMENTS		0x84
+struct intel_sdvo_enhancements_reply {
+	unsigned int flicker_filter:1;
+	unsigned int flicker_filter_adaptive:1;
+	unsigned int flicker_filter_2d:1;
+	unsigned int saturation:1;
+	unsigned int hue:1;
+	unsigned int brightness:1;
+	unsigned int contrast:1;
+	unsigned int overscan_h:1;
+
+	unsigned int overscan_v:1;
+	unsigned int hpos:1;
+	unsigned int vpos:1;
+	unsigned int sharpness:1;
+	unsigned int dot_crawl:1;
+	unsigned int dither:1;
+	unsigned int tv_chroma_filter:1;
+	unsigned int tv_luma_filter:1;
+} __packed;
+
+/* Picture enhancement limits below are dependent on the current TV format,
+ * and thus need to be queried and set after it.
+ */
+#define SDVO_CMD_GET_MAX_FLICKER_FILTER			0x4d
+#define SDVO_CMD_GET_MAX_FLICKER_FILTER_ADAPTIVE	0x7b
+#define SDVO_CMD_GET_MAX_FLICKER_FILTER_2D		0x52
+#define SDVO_CMD_GET_MAX_SATURATION			0x55
+#define SDVO_CMD_GET_MAX_HUE				0x58
+#define SDVO_CMD_GET_MAX_BRIGHTNESS			0x5b
+#define SDVO_CMD_GET_MAX_CONTRAST			0x5e
+#define SDVO_CMD_GET_MAX_OVERSCAN_H			0x61
+#define SDVO_CMD_GET_MAX_OVERSCAN_V			0x64
+#define SDVO_CMD_GET_MAX_HPOS				0x67
+#define SDVO_CMD_GET_MAX_VPOS				0x6a
+#define SDVO_CMD_GET_MAX_SHARPNESS			0x6d
+#define SDVO_CMD_GET_MAX_TV_CHROMA_FILTER		0x74
+#define SDVO_CMD_GET_MAX_TV_LUMA_FILTER			0x77
+struct intel_sdvo_enhancement_limits_reply {
+	u16 max_value;
+	u16 default_value;
+} __packed;
+
+#define SDVO_CMD_GET_LVDS_PANEL_INFORMATION		0x7f
+#define SDVO_CMD_SET_LVDS_PANEL_INFORMATION		0x80
+# define SDVO_LVDS_COLOR_DEPTH_18			(0 << 0)
+# define SDVO_LVDS_COLOR_DEPTH_24			(1 << 0)
+# define SDVO_LVDS_CONNECTOR_SPWG			(0 << 2)
+# define SDVO_LVDS_CONNECTOR_OPENLDI			(1 << 2)
+# define SDVO_LVDS_SINGLE_CHANNEL			(0 << 4)
+# define SDVO_LVDS_DUAL_CHANNEL				(1 << 4)
+
+#define SDVO_CMD_GET_FLICKER_FILTER			0x4e
+#define SDVO_CMD_SET_FLICKER_FILTER			0x4f
+#define SDVO_CMD_GET_FLICKER_FILTER_ADAPTIVE		0x50
+#define SDVO_CMD_SET_FLICKER_FILTER_ADAPTIVE		0x51
+#define SDVO_CMD_GET_FLICKER_FILTER_2D			0x53
+#define SDVO_CMD_SET_FLICKER_FILTER_2D			0x54
+#define SDVO_CMD_GET_SATURATION				0x56
+#define SDVO_CMD_SET_SATURATION				0x57
+#define SDVO_CMD_GET_HUE				0x59
+#define SDVO_CMD_SET_HUE				0x5a
+#define SDVO_CMD_GET_BRIGHTNESS				0x5c
+#define SDVO_CMD_SET_BRIGHTNESS				0x5d
+#define SDVO_CMD_GET_CONTRAST				0x5f
+#define SDVO_CMD_SET_CONTRAST				0x60
+#define SDVO_CMD_GET_OVERSCAN_H				0x62
+#define SDVO_CMD_SET_OVERSCAN_H				0x63
+#define SDVO_CMD_GET_OVERSCAN_V				0x65
+#define SDVO_CMD_SET_OVERSCAN_V				0x66
+#define SDVO_CMD_GET_HPOS				0x68
+#define SDVO_CMD_SET_HPOS				0x69
+#define SDVO_CMD_GET_VPOS				0x6b
+#define SDVO_CMD_SET_VPOS				0x6c
+#define SDVO_CMD_GET_SHARPNESS				0x6e
+#define SDVO_CMD_SET_SHARPNESS				0x6f
+#define SDVO_CMD_GET_TV_CHROMA_FILTER			0x75
+#define SDVO_CMD_SET_TV_CHROMA_FILTER			0x76
+#define SDVO_CMD_GET_TV_LUMA_FILTER			0x78
+#define SDVO_CMD_SET_TV_LUMA_FILTER			0x79
+struct intel_sdvo_enhancements_arg {
+	u16 value;
+} __packed;
+
+#define SDVO_CMD_GET_DOT_CRAWL				0x70
+#define SDVO_CMD_SET_DOT_CRAWL				0x71
+# define SDVO_DOT_CRAWL_ON					(1 << 0)
+# define SDVO_DOT_CRAWL_DEFAULT_ON				(1 << 1)
+
+#define SDVO_CMD_GET_DITHER				0x72
+#define SDVO_CMD_SET_DITHER				0x73
+# define SDVO_DITHER_ON						(1 << 0)
+# define SDVO_DITHER_DEFAULT_ON					(1 << 1)
+
+#define SDVO_CMD_SET_CONTROL_BUS_SWITCH			0x7a
+# define SDVO_CONTROL_BUS_PROM				(1 << 0)
+# define SDVO_CONTROL_BUS_DDC1				(1 << 1)
+# define SDVO_CONTROL_BUS_DDC2				(1 << 2)
+# define SDVO_CONTROL_BUS_DDC3				(1 << 3)
+
+/* HDMI op codes */
+#define SDVO_CMD_GET_SUPP_ENCODE	0x9d
+#define SDVO_CMD_GET_ENCODE		0x9e
+#define SDVO_CMD_SET_ENCODE		0x9f
+  #define SDVO_ENCODE_DVI	0x0
+  #define SDVO_ENCODE_HDMI	0x1
+#define SDVO_CMD_SET_PIXEL_REPLI	0x8b
+#define SDVO_CMD_GET_PIXEL_REPLI	0x8c
+#define SDVO_CMD_GET_COLORIMETRY_CAP	0x8d
+#define SDVO_CMD_SET_COLORIMETRY	0x8e
+  #define SDVO_COLORIMETRY_RGB256	(1 << 0)
+  #define SDVO_COLORIMETRY_RGB220	(1 << 1)
+  #define SDVO_COLORIMETRY_YCrCb422	(1 << 2)
+  #define SDVO_COLORIMETRY_YCrCb444	(1 << 3)
+#define SDVO_CMD_GET_COLORIMETRY	0x8f
+#define SDVO_CMD_GET_AUDIO_ENCRYPT_PREFER 0x90
+#define SDVO_CMD_SET_AUDIO_STAT		0x91
+#define SDVO_CMD_GET_AUDIO_STAT		0x92
+  #define SDVO_AUDIO_ELD_VALID		(1 << 0)
+  #define SDVO_AUDIO_PRESENCE_DETECT	(1 << 1)
+  #define SDVO_AUDIO_CP_READY		(1 << 2)
+#define SDVO_CMD_SET_HBUF_INDEX		0x93
+  #define SDVO_HBUF_INDEX_ELD		0
+  #define SDVO_HBUF_INDEX_AVI_IF	1
+#define SDVO_CMD_GET_HBUF_INDEX		0x94
+#define SDVO_CMD_GET_HBUF_INFO		0x95
+#define SDVO_CMD_SET_HBUF_AV_SPLIT	0x96
+#define SDVO_CMD_GET_HBUF_AV_SPLIT	0x97
+#define SDVO_CMD_SET_HBUF_DATA		0x98
+#define SDVO_CMD_GET_HBUF_DATA		0x99
+#define SDVO_CMD_SET_HBUF_TXRATE	0x9a
+#define SDVO_CMD_GET_HBUF_TXRATE	0x9b
+  #define SDVO_HBUF_TX_DISABLED	(0 << 6)
+  #define SDVO_HBUF_TX_ONCE	(2 << 6)
+  #define SDVO_HBUF_TX_VSYNC	(3 << 6)
+#define SDVO_CMD_GET_AUDIO_TX_INFO	0x9c
+#define SDVO_NEED_TO_STALL  (1 << 7)
+
+struct intel_sdvo_encode {
+	u8 dvi_rev;
+	u8 hdmi_rev;
+} __packed;
+
+#endif /* __INTEL_SDVO_REGS_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_snps_phy.c b/drivers/gpu/drm/i915/display/intel_snps_phy.c
new file mode 100644
index 000000000..3326c79c7
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_snps_phy.c
@@ -0,0 +1,2036 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#include <linux/util_macros.h>
+
+#include "intel_ddi.h"
+#include "intel_ddi_buf_trans.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_snps_phy.h"
+#include "intel_snps_phy_regs.h"
+
+/**
+ * DOC: Synopsis PHY support
+ *
+ * Synopsis PHYs are primarily programmed by looking up magic register values
+ * in tables rather than calculating the necessary values at runtime.
+ *
+ * Of special note is that the SNPS PHYs include a dedicated port PLL, known as
+ * an "MPLLB."  The MPLLB replaces the shared DPLL functionality used on other
+ * platforms and must be programming directly during the modeset sequence
+ * since it is not handled by the shared DPLL framework as on other platforms.
+ */
+
+void intel_snps_phy_wait_for_calibration(struct drm_i915_private *i915)
+{
+	enum phy phy;
+
+	for_each_phy_masked(phy, ~0) {
+		if (!intel_phy_is_snps(i915, phy))
+			continue;
+
+		/*
+		 * If calibration does not complete successfully, we'll remember
+		 * which phy was affected and skip setup of the corresponding
+		 * output later.
+		 */
+		if (intel_de_wait_for_clear(i915, DG2_PHY_MISC(phy),
+					    DG2_PHY_DP_TX_ACK_MASK, 25))
+			i915->snps_phy_failed_calibration |= BIT(phy);
+	}
+}
+
+void intel_snps_phy_update_psr_power_state(struct drm_i915_private *dev_priv,
+					   enum phy phy, bool enable)
+{
+	u32 val;
+
+	if (!intel_phy_is_snps(dev_priv, phy))
+		return;
+
+	val = REG_FIELD_PREP(SNPS_PHY_TX_REQ_LN_DIS_PWR_STATE_PSR,
+			     enable ? 2 : 3);
+	intel_uncore_rmw(&dev_priv->uncore, SNPS_PHY_TX_REQ(phy),
+			 SNPS_PHY_TX_REQ_LN_DIS_PWR_STATE_PSR, val);
+}
+
+void intel_snps_phy_set_signal_levels(struct intel_encoder *encoder,
+				      const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	const struct intel_ddi_buf_trans *trans;
+	enum phy phy = intel_port_to_phy(dev_priv, encoder->port);
+	int n_entries, ln;
+
+	trans = encoder->get_buf_trans(encoder, crtc_state, &n_entries);
+	if (drm_WARN_ON_ONCE(&dev_priv->drm, !trans))
+		return;
+
+	for (ln = 0; ln < 4; ln++) {
+		int level = intel_ddi_level(encoder, crtc_state, ln);
+		u32 val = 0;
+
+		val |= REG_FIELD_PREP(SNPS_PHY_TX_EQ_MAIN, trans->entries[level].snps.vswing);
+		val |= REG_FIELD_PREP(SNPS_PHY_TX_EQ_PRE, trans->entries[level].snps.pre_cursor);
+		val |= REG_FIELD_PREP(SNPS_PHY_TX_EQ_POST, trans->entries[level].snps.post_cursor);
+
+		intel_de_write(dev_priv, SNPS_PHY_TX_EQ(ln, phy), val);
+	}
+}
+
+/*
+ * Basic DP link rates with 100 MHz reference clock.
+ */
+
+static const struct intel_mpllb_state dg2_dp_rbr_100 = {
+	.clock = 162000,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 4) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 20) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 65) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 127),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 2),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 226),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 5),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 39321) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 3),
+};
+
+static const struct intel_mpllb_state dg2_dp_hbr1_100 = {
+	.clock = 270000,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 4) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 20) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 65) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 127),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 3),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 184),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 1),
+};
+
+static const struct intel_mpllb_state dg2_dp_hbr2_100 = {
+	.clock = 540000,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 4) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 20) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 65) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 127),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 3),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 184),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 1),
+};
+
+static const struct intel_mpllb_state dg2_dp_hbr3_100 = {
+	.clock = 810000,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 4) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 19) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 65) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 127),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 292),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 1),
+};
+
+static const struct intel_mpllb_state dg2_dp_uhbr10_100 = {
+	.clock = 1000000,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 4) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 21) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 65) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 127),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV_MULTIPLIER, 8) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_WORD_DIV2_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DP2_MODE, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SHIM_DIV32_CLK_SEL, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 368),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 1),
+
+	/*
+	 * SSC will be enabled, DP UHBR has a minimum SSC requirement.
+	 */
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_PEAK, 58982),
+	.mpllb_sscstep =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_STEPSIZE, 76101),
+};
+
+static const struct intel_mpllb_state dg2_dp_uhbr13_100 = {
+	.clock = 1350000,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 5) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 45) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 65) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 127),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV_MULTIPLIER, 8) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_WORD_DIV2_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DP2_MODE, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 3),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 508),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 1),
+
+	/*
+	 * SSC will be enabled, DP UHBR has a minimum SSC requirement.
+	 */
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_PEAK, 79626),
+	.mpllb_sscstep =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_STEPSIZE, 102737),
+};
+
+static const struct intel_mpllb_state * const dg2_dp_100_tables[] = {
+	&dg2_dp_rbr_100,
+	&dg2_dp_hbr1_100,
+	&dg2_dp_hbr2_100,
+	&dg2_dp_hbr3_100,
+	&dg2_dp_uhbr10_100,
+	&dg2_dp_uhbr13_100,
+	NULL,
+};
+
+/*
+ * eDP link rates with 100 MHz reference clock.
+ */
+
+static const struct intel_mpllb_state dg2_edp_r216 = {
+	.clock = 216000,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 4) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 19) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 65) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 127),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 312),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 5),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 52428) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 4),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_PEAK, 50961),
+	.mpllb_sscstep =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_STEPSIZE, 65752),
+};
+
+static const struct intel_mpllb_state dg2_edp_r243 = {
+	.clock = 243000,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 4) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 20) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 65) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 127),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 356),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 5),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 26214) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 2),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_PEAK, 57331),
+	.mpllb_sscstep =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_STEPSIZE, 73971),
+};
+
+static const struct intel_mpllb_state dg2_edp_r324 = {
+	.clock = 324000,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 4) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 20) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 65) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 127),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 2),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 226),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 5),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 39321) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 3),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_PEAK, 38221),
+	.mpllb_sscstep =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_STEPSIZE, 49314),
+};
+
+static const struct intel_mpllb_state dg2_edp_r432 = {
+	.clock = 432000,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 4) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 19) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 65) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 127),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 312),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 5),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 52428) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 4),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_PEAK, 50961),
+	.mpllb_sscstep =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_STEPSIZE, 65752),
+};
+
+static const struct intel_mpllb_state * const dg2_edp_tables[] = {
+	&dg2_dp_rbr_100,
+	&dg2_edp_r216,
+	&dg2_edp_r243,
+	&dg2_dp_hbr1_100,
+	&dg2_edp_r324,
+	&dg2_edp_r432,
+	&dg2_dp_hbr2_100,
+	&dg2_dp_hbr3_100,
+	NULL,
+};
+
+/*
+ * HDMI link rates with 100 MHz reference clock.
+ */
+
+static const struct intel_mpllb_state dg2_hdmi_25_175 = {
+	.clock = 25175,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 5) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 15) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 5) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 128) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 143),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 36663) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 71),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_27_0 = {
+	.clock = 27000,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 5) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 15) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 5) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 140) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 5),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 26214) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 2),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_74_25 = {
+	.clock = 74250,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 4) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 15) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 3) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 3),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 86) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 5),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 26214) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 2),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_148_5 = {
+	.clock = 148500,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 4) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 15) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 3),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 86) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 5),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 26214) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 2),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+/* values in the below table are calculted using the algo */
+static const struct intel_mpllb_state dg2_hdmi_25200 = {
+	.clock = 25200,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 7) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 5) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 0),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 128) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 41943) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 2621),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_27027 = {
+	.clock = 27027,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 5) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 0),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 140) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 31876) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 46555),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_28320 = {
+	.clock = 28320,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 5) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 0),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 148) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 40894) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 30408),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_30240 = {
+	.clock = 30240,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 5) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 0),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 160) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 50331) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 42466),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_31500 = {
+	.clock = 31500,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 7) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 4) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 3),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 68) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 26214) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 26214),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_36000 = {
+	.clock = 36000,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 4) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 3),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 82) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 39321) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 39320),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_40000 = {
+	.clock = 40000,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 4) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 0) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 2),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 96) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 0) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 0) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 0),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_49500 = {
+	.clock = 49500,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 4) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 1),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 126) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 13107) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 13107),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_50000 = {
+	.clock = 50000,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 4) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 0) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 1),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 128) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 0) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 0) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 0),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_57284 = {
+	.clock = 57284,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 4) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 0),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 150) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 42886) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 49701),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_58000 = {
+	.clock = 58000,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 4) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 0),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 152) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 52428) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 52427),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_65000 = {
+	.clock = 65000,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 7) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 3) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 0) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 3),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 72) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 0) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 0) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 0),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_71000 = {
+	.clock = 71000,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 3) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 3),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 80) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 52428) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 52427),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_74176 = {
+	.clock = 74176,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 3) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 3),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 86) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 22334) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 43829),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_75000 = {
+	.clock = 75000,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 3) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 0) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 3),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 88) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 0) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 0) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 0),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_78750 = {
+	.clock = 78750,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 3) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 0) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 2),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 94) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 0) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 0) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 0),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_85500 = {
+	.clock = 85500,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 3) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 2),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 104) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 26214) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 26214),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_88750 = {
+	.clock = 88750,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 7) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 15) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 3) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 0) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 1),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 110) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 0) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 0) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 0),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_106500 = {
+	.clock = 106500,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 3) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 0),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 138) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 13107) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 13107),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_108000 = {
+	.clock = 108000,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 3) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 0),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 140) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 26214) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 26214),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_115500 = {
+	.clock = 115500,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 3) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 0),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 152) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 26214) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 26214),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_119000 = {
+	.clock = 119000,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 3) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 0),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 158) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 13107) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 13107),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_135000 = {
+	.clock = 135000,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 7) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 15) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 0) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 3),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 76) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 0) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 0) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 0),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_138500 = {
+	.clock = 138500,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 3),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 78) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 26214) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 26214),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_147160 = {
+	.clock = 147160,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 3),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 84) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 56623) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 6815),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_148352 = {
+	.clock = 148352,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 3),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 86) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 22334) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 43829),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_154000 = {
+	.clock = 154000,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 13) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 2),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 90) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 39321) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 39320),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_162000 = {
+	.clock = 162000,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 2),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 96) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 52428) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 52427),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_209800 = {
+	.clock = 209800,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 7) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 0),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 134) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 60293) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 7864),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_262750 = {
+	.clock = 262750,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 7) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 3),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 72) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 36044) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 52427),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_267300 = {
+	.clock = 267300,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 7) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 3),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 74) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 30146) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 36699),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_268500 = {
+	.clock = 268500,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 7) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 3),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 74) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 45875) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 13107),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_296703 = {
+	.clock = 296703,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 3),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 86) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 22321) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 36804),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_241500 = {
+	.clock = 241500,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 0),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 160) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 39321) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 39320),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_319890 = {
+	.clock = 319890,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 2),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 94) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 64094) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 13631),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_497750 = {
+	.clock = 497750,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 15) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 0),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 166) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 36044) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 52427),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_592000 = {
+	.clock = 592000,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 0) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 3),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 86) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 13107) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 13107),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_593407 = {
+	.clock = 593407,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 0) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 3),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 86) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 22328) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 7549),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_297 = {
+	.clock = 297000,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 3),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 86) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 26214) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 26214),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state dg2_hdmi_594 = {
+	.clock = 594000,
+	.ref_control =
+		REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+	.mpllb_cp =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 4) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 15) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124),
+	.mpllb_div =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 3),
+	.mpllb_div2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 86) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1),
+	.mpllb_fracn1 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 5),
+	.mpllb_fracn2 =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 26214) |
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 2),
+	.mpllb_sscen =
+		REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1),
+};
+
+static const struct intel_mpllb_state * const dg2_hdmi_tables[] = {
+	&dg2_hdmi_25_175,
+	&dg2_hdmi_27_0,
+	&dg2_hdmi_74_25,
+	&dg2_hdmi_148_5,
+	&dg2_hdmi_297,
+	&dg2_hdmi_594,
+	&dg2_hdmi_25200,
+	&dg2_hdmi_27027,
+	&dg2_hdmi_28320,
+	&dg2_hdmi_30240,
+	&dg2_hdmi_31500,
+	&dg2_hdmi_36000,
+	&dg2_hdmi_40000,
+	&dg2_hdmi_49500,
+	&dg2_hdmi_50000,
+	&dg2_hdmi_57284,
+	&dg2_hdmi_58000,
+	&dg2_hdmi_65000,
+	&dg2_hdmi_71000,
+	&dg2_hdmi_74176,
+	&dg2_hdmi_75000,
+	&dg2_hdmi_78750,
+	&dg2_hdmi_85500,
+	&dg2_hdmi_88750,
+	&dg2_hdmi_106500,
+	&dg2_hdmi_108000,
+	&dg2_hdmi_115500,
+	&dg2_hdmi_119000,
+	&dg2_hdmi_135000,
+	&dg2_hdmi_138500,
+	&dg2_hdmi_147160,
+	&dg2_hdmi_148352,
+	&dg2_hdmi_154000,
+	&dg2_hdmi_162000,
+	&dg2_hdmi_209800,
+	&dg2_hdmi_241500,
+	&dg2_hdmi_262750,
+	&dg2_hdmi_267300,
+	&dg2_hdmi_268500,
+	&dg2_hdmi_296703,
+	&dg2_hdmi_319890,
+	&dg2_hdmi_497750,
+	&dg2_hdmi_592000,
+	&dg2_hdmi_593407,
+	NULL,
+};
+
+static const struct intel_mpllb_state * const *
+intel_mpllb_tables_get(struct intel_crtc_state *crtc_state,
+		       struct intel_encoder *encoder)
+{
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP)) {
+		return dg2_edp_tables;
+	} else if (intel_crtc_has_dp_encoder(crtc_state)) {
+		return dg2_dp_100_tables;
+	} else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) {
+		return dg2_hdmi_tables;
+	}
+
+	MISSING_CASE(encoder->type);
+	return NULL;
+}
+
+int intel_mpllb_calc_state(struct intel_crtc_state *crtc_state,
+			   struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	const struct intel_mpllb_state * const *tables;
+	int i;
+
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) {
+		if (intel_snps_phy_check_hdmi_link_rate(crtc_state->port_clock)
+		    != MODE_OK) {
+			/*
+			 * FIXME: Can only support fixed HDMI frequencies
+			 * until we have a proper algorithm under a valid
+			 * license.
+			 */
+			drm_dbg_kms(&i915->drm, "Can't support HDMI link rate %d\n",
+				    crtc_state->port_clock);
+			return -EINVAL;
+		}
+	}
+
+	tables = intel_mpllb_tables_get(crtc_state, encoder);
+	if (!tables)
+		return -EINVAL;
+
+	for (i = 0; tables[i]; i++) {
+		if (crtc_state->port_clock == tables[i]->clock) {
+			crtc_state->mpllb_state = *tables[i];
+			return 0;
+		}
+	}
+
+	return -EINVAL;
+}
+
+void intel_mpllb_enable(struct intel_encoder *encoder,
+			const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	const struct intel_mpllb_state *pll_state = &crtc_state->mpllb_state;
+	enum phy phy = intel_port_to_phy(dev_priv, encoder->port);
+	i915_reg_t enable_reg = (phy <= PHY_D ?
+				 DG2_PLL_ENABLE(phy) : MG_PLL_ENABLE(0));
+
+	/*
+	 * 3. Software programs the following PLL registers for the desired
+	 * frequency.
+	 */
+	intel_de_write(dev_priv, SNPS_PHY_MPLLB_CP(phy), pll_state->mpllb_cp);
+	intel_de_write(dev_priv, SNPS_PHY_MPLLB_DIV(phy), pll_state->mpllb_div);
+	intel_de_write(dev_priv, SNPS_PHY_MPLLB_DIV2(phy), pll_state->mpllb_div2);
+	intel_de_write(dev_priv, SNPS_PHY_MPLLB_SSCEN(phy), pll_state->mpllb_sscen);
+	intel_de_write(dev_priv, SNPS_PHY_MPLLB_SSCSTEP(phy), pll_state->mpllb_sscstep);
+	intel_de_write(dev_priv, SNPS_PHY_MPLLB_FRACN1(phy), pll_state->mpllb_fracn1);
+	intel_de_write(dev_priv, SNPS_PHY_MPLLB_FRACN2(phy), pll_state->mpllb_fracn2);
+
+	/*
+	 * 4. If the frequency will result in a change to the voltage
+	 * requirement, follow the Display Voltage Frequency Switching -
+	 * Sequence Before Frequency Change.
+	 *
+	 * We handle this step in bxt_set_cdclk().
+	 */
+
+	/* 5. Software sets DPLL_ENABLE [PLL Enable] to "1". */
+	intel_uncore_rmw(&dev_priv->uncore, enable_reg, 0, PLL_ENABLE);
+
+	/*
+	 * 9. Software sets SNPS_PHY_MPLLB_DIV dp_mpllb_force_en to "1". This
+	 * will keep the PLL running during the DDI lane programming and any
+	 * typeC DP cable disconnect. Do not set the force before enabling the
+	 * PLL because that will start the PLL before it has sampled the
+	 * divider values.
+	 */
+	intel_de_write(dev_priv, SNPS_PHY_MPLLB_DIV(phy),
+		       pll_state->mpllb_div | SNPS_PHY_MPLLB_FORCE_EN);
+
+	/*
+	 * 10. Software polls on register DPLL_ENABLE [PLL Lock] to confirm PLL
+	 * is locked at new settings. This register bit is sampling PHY
+	 * dp_mpllb_state interface signal.
+	 */
+	if (intel_de_wait_for_set(dev_priv, enable_reg, PLL_LOCK, 5))
+		drm_dbg_kms(&dev_priv->drm, "Port %c PLL not locked\n", phy_name(phy));
+
+	/*
+	 * 11. If the frequency will result in a change to the voltage
+	 * requirement, follow the Display Voltage Frequency Switching -
+	 * Sequence After Frequency Change.
+	 *
+	 * We handle this step in bxt_set_cdclk().
+	 */
+}
+
+void intel_mpllb_disable(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum phy phy = intel_port_to_phy(i915, encoder->port);
+	i915_reg_t enable_reg = (phy <= PHY_D ?
+				 DG2_PLL_ENABLE(phy) : MG_PLL_ENABLE(0));
+
+	/*
+	 * 1. If the frequency will result in a change to the voltage
+	 * requirement, follow the Display Voltage Frequency Switching -
+	 * Sequence Before Frequency Change.
+	 *
+	 * We handle this step in bxt_set_cdclk().
+	 */
+
+	/* 2. Software programs DPLL_ENABLE [PLL Enable] to "0" */
+	intel_uncore_rmw(&i915->uncore, enable_reg, PLL_ENABLE, 0);
+
+	/*
+	 * 4. Software programs SNPS_PHY_MPLLB_DIV dp_mpllb_force_en to "0".
+	 * This will allow the PLL to stop running.
+	 */
+	intel_uncore_rmw(&i915->uncore, SNPS_PHY_MPLLB_DIV(phy),
+			 SNPS_PHY_MPLLB_FORCE_EN, 0);
+
+	/*
+	 * 5. Software polls DPLL_ENABLE [PLL Lock] for PHY acknowledgment
+	 * (dp_txX_ack) that the new transmitter setting request is completed.
+	 */
+	if (intel_de_wait_for_clear(i915, enable_reg, PLL_LOCK, 5))
+		drm_err(&i915->drm, "Port %c PLL not locked\n", phy_name(phy));
+
+	/*
+	 * 6. If the frequency will result in a change to the voltage
+	 * requirement, follow the Display Voltage Frequency Switching -
+	 * Sequence After Frequency Change.
+	 *
+	 * We handle this step in bxt_set_cdclk().
+	 */
+}
+
+int intel_mpllb_calc_port_clock(struct intel_encoder *encoder,
+				const struct intel_mpllb_state *pll_state)
+{
+	unsigned int frac_quot = 0, frac_rem = 0, frac_den = 1;
+	unsigned int multiplier, tx_clk_div, refclk;
+	bool frac_en;
+
+	if (0)
+		refclk = 38400;
+	else
+		refclk = 100000;
+
+	refclk >>= REG_FIELD_GET(SNPS_PHY_MPLLB_REF_CLK_DIV, pll_state->mpllb_div2) - 1;
+
+	frac_en = REG_FIELD_GET(SNPS_PHY_MPLLB_FRACN_EN, pll_state->mpllb_fracn1);
+
+	if (frac_en) {
+		frac_quot = REG_FIELD_GET(SNPS_PHY_MPLLB_FRACN_QUOT, pll_state->mpllb_fracn2);
+		frac_rem = REG_FIELD_GET(SNPS_PHY_MPLLB_FRACN_REM, pll_state->mpllb_fracn2);
+		frac_den = REG_FIELD_GET(SNPS_PHY_MPLLB_FRACN_DEN, pll_state->mpllb_fracn1);
+	}
+
+	multiplier = REG_FIELD_GET(SNPS_PHY_MPLLB_MULTIPLIER, pll_state->mpllb_div2) / 2 + 16;
+
+	tx_clk_div = REG_FIELD_GET(SNPS_PHY_MPLLB_TX_CLK_DIV, pll_state->mpllb_div);
+
+	return DIV_ROUND_CLOSEST_ULL(mul_u32_u32(refclk, (multiplier << 16) + frac_quot) +
+				     DIV_ROUND_CLOSEST(refclk * frac_rem, frac_den),
+				     10 << (tx_clk_div + 16));
+}
+
+void intel_mpllb_readout_hw_state(struct intel_encoder *encoder,
+				  struct intel_mpllb_state *pll_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	enum phy phy = intel_port_to_phy(dev_priv, encoder->port);
+
+	pll_state->mpllb_cp = intel_de_read(dev_priv, SNPS_PHY_MPLLB_CP(phy));
+	pll_state->mpllb_div = intel_de_read(dev_priv, SNPS_PHY_MPLLB_DIV(phy));
+	pll_state->mpllb_div2 = intel_de_read(dev_priv, SNPS_PHY_MPLLB_DIV2(phy));
+	pll_state->mpllb_sscen = intel_de_read(dev_priv, SNPS_PHY_MPLLB_SSCEN(phy));
+	pll_state->mpllb_sscstep = intel_de_read(dev_priv, SNPS_PHY_MPLLB_SSCSTEP(phy));
+	pll_state->mpllb_fracn1 = intel_de_read(dev_priv, SNPS_PHY_MPLLB_FRACN1(phy));
+	pll_state->mpllb_fracn2 = intel_de_read(dev_priv, SNPS_PHY_MPLLB_FRACN2(phy));
+
+	/*
+	 * REF_CONTROL is under firmware control and never programmed by the
+	 * driver; we read it only for sanity checking purposes.  The bspec
+	 * only tells us the expected value for one field in this register,
+	 * so we'll only read out those specific bits here.
+	 */
+	pll_state->ref_control = intel_de_read(dev_priv, SNPS_PHY_REF_CONTROL(phy)) &
+		SNPS_PHY_REF_CONTROL_REF_RANGE;
+
+	/*
+	 * MPLLB_DIV is programmed twice, once with the software-computed
+	 * state, then again with the MPLLB_FORCE_EN bit added.  Drop that
+	 * extra bit during readout so that we return the actual expected
+	 * software state.
+	 */
+	pll_state->mpllb_div &= ~SNPS_PHY_MPLLB_FORCE_EN;
+}
+
+int intel_snps_phy_check_hdmi_link_rate(int clock)
+{
+	const struct intel_mpllb_state * const *tables = dg2_hdmi_tables;
+	int i;
+
+	for (i = 0; tables[i]; i++) {
+		if (clock == tables[i]->clock)
+			return MODE_OK;
+	}
+
+	return MODE_CLOCK_RANGE;
+}
+
+void intel_mpllb_state_verify(struct intel_atomic_state *state,
+			      struct intel_crtc_state *new_crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	struct intel_mpllb_state mpllb_hw_state = { 0 };
+	struct intel_mpllb_state *mpllb_sw_state = &new_crtc_state->mpllb_state;
+	struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->uapi.crtc);
+	struct intel_encoder *encoder;
+
+	if (!IS_DG2(i915))
+		return;
+
+	if (!new_crtc_state->hw.active)
+		return;
+
+	encoder = intel_get_crtc_new_encoder(state, new_crtc_state);
+	intel_mpllb_readout_hw_state(encoder, &mpllb_hw_state);
+
+#define MPLLB_CHECK(__name)						\
+	I915_STATE_WARN(mpllb_sw_state->__name != mpllb_hw_state.__name,	\
+			"[CRTC:%d:%s] mismatch in MPLLB: %s (expected 0x%08x, found 0x%08x)", \
+			crtc->base.base.id, crtc->base.name,		\
+			__stringify(__name),				\
+			mpllb_sw_state->__name, mpllb_hw_state.__name)
+
+	MPLLB_CHECK(mpllb_cp);
+	MPLLB_CHECK(mpllb_div);
+	MPLLB_CHECK(mpllb_div2);
+	MPLLB_CHECK(mpllb_fracn1);
+	MPLLB_CHECK(mpllb_fracn2);
+	MPLLB_CHECK(mpllb_sscen);
+	MPLLB_CHECK(mpllb_sscstep);
+
+	/*
+	 * ref_control is handled by the hardware/firemware and never
+	 * programmed by the software, but the proper values are supplied
+	 * in the bspec for verification purposes.
+	 */
+	MPLLB_CHECK(ref_control);
+
+#undef MPLLB_CHECK
+}
diff --git a/drivers/gpu/drm/i915/display/intel_snps_phy.h b/drivers/gpu/drm/i915/display/intel_snps_phy.h
new file mode 100644
index 000000000..557ef820b
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_snps_phy.h
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_SNPS_PHY_H__
+#define __INTEL_SNPS_PHY_H__
+
+#include <linux/types.h>
+
+struct drm_i915_private;
+struct intel_atomic_state;
+struct intel_crtc_state;
+struct intel_encoder;
+struct intel_mpllb_state;
+enum phy;
+
+void intel_snps_phy_wait_for_calibration(struct drm_i915_private *dev_priv);
+void intel_snps_phy_update_psr_power_state(struct drm_i915_private *dev_priv,
+					   enum phy phy, bool enable);
+
+int intel_mpllb_calc_state(struct intel_crtc_state *crtc_state,
+			   struct intel_encoder *encoder);
+void intel_mpllb_enable(struct intel_encoder *encoder,
+			const struct intel_crtc_state *crtc_state);
+void intel_mpllb_disable(struct intel_encoder *encoder);
+void intel_mpllb_readout_hw_state(struct intel_encoder *encoder,
+				  struct intel_mpllb_state *pll_state);
+int intel_mpllb_calc_port_clock(struct intel_encoder *encoder,
+				const struct intel_mpllb_state *pll_state);
+
+int intel_snps_phy_check_hdmi_link_rate(int clock);
+void intel_snps_phy_set_signal_levels(struct intel_encoder *encoder,
+				      const struct intel_crtc_state *crtc_state);
+void intel_mpllb_state_verify(struct intel_atomic_state *state,
+			      struct intel_crtc_state *new_crtc_state);
+
+#endif /* __INTEL_SNPS_PHY_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_snps_phy_regs.h b/drivers/gpu/drm/i915/display/intel_snps_phy_regs.h
new file mode 100644
index 000000000..0543465aa
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_snps_phy_regs.h
@@ -0,0 +1,75 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#ifndef __INTEL_SNPS_PHY_REGS__
+#define __INTEL_SNPS_PHY_REGS__
+
+#include "i915_reg_defs.h"
+
+#define _SNPS_PHY_A_BASE			0x168000
+#define _SNPS_PHY_B_BASE			0x169000
+#define _SNPS_PHY(phy)				_PHY(phy, \
+						     _SNPS_PHY_A_BASE, \
+						     _SNPS_PHY_B_BASE)
+#define _SNPS2(phy, reg)			(_SNPS_PHY(phy) - \
+						 _SNPS_PHY_A_BASE + (reg))
+#define _MMIO_SNPS(phy, reg)			_MMIO(_SNPS2(phy, reg))
+#define _MMIO_SNPS_LN(ln, phy, reg)		_MMIO(_SNPS2(phy, \
+							     (reg) + (ln) * 0x10))
+
+#define SNPS_PHY_MPLLB_CP(phy)			_MMIO_SNPS(phy, 0x168000)
+#define   SNPS_PHY_MPLLB_CP_INT			REG_GENMASK(31, 25)
+#define   SNPS_PHY_MPLLB_CP_INT_GS		REG_GENMASK(23, 17)
+#define   SNPS_PHY_MPLLB_CP_PROP		REG_GENMASK(15, 9)
+#define   SNPS_PHY_MPLLB_CP_PROP_GS		REG_GENMASK(7, 1)
+
+#define SNPS_PHY_MPLLB_DIV(phy)			_MMIO_SNPS(phy, 0x168004)
+#define   SNPS_PHY_MPLLB_FORCE_EN		REG_BIT(31)
+#define   SNPS_PHY_MPLLB_DIV_CLK_EN		REG_BIT(30)
+#define   SNPS_PHY_MPLLB_DIV5_CLK_EN		REG_BIT(29)
+#define   SNPS_PHY_MPLLB_V2I			REG_GENMASK(27, 26)
+#define   SNPS_PHY_MPLLB_FREQ_VCO		REG_GENMASK(25, 24)
+#define   SNPS_PHY_MPLLB_DIV_MULTIPLIER		REG_GENMASK(23, 16)
+#define   SNPS_PHY_MPLLB_PMIX_EN		REG_BIT(10)
+#define   SNPS_PHY_MPLLB_DP2_MODE		REG_BIT(9)
+#define   SNPS_PHY_MPLLB_WORD_DIV2_EN		REG_BIT(8)
+#define   SNPS_PHY_MPLLB_TX_CLK_DIV		REG_GENMASK(7, 5)
+#define   SNPS_PHY_MPLLB_SHIM_DIV32_CLK_SEL	REG_BIT(0)
+
+#define SNPS_PHY_MPLLB_FRACN1(phy)		_MMIO_SNPS(phy, 0x168008)
+#define   SNPS_PHY_MPLLB_FRACN_EN		REG_BIT(31)
+#define   SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN	REG_BIT(30)
+#define   SNPS_PHY_MPLLB_FRACN_DEN		REG_GENMASK(15, 0)
+
+#define SNPS_PHY_MPLLB_FRACN2(phy)		_MMIO_SNPS(phy, 0x16800C)
+#define   SNPS_PHY_MPLLB_FRACN_REM		REG_GENMASK(31, 16)
+#define   SNPS_PHY_MPLLB_FRACN_QUOT		REG_GENMASK(15, 0)
+
+#define SNPS_PHY_MPLLB_SSCEN(phy)		_MMIO_SNPS(phy, 0x168014)
+#define   SNPS_PHY_MPLLB_SSC_EN			REG_BIT(31)
+#define   SNPS_PHY_MPLLB_SSC_UP_SPREAD		REG_BIT(30)
+#define   SNPS_PHY_MPLLB_SSC_PEAK		REG_GENMASK(29, 10)
+
+#define SNPS_PHY_MPLLB_SSCSTEP(phy)		_MMIO_SNPS(phy, 0x168018)
+#define   SNPS_PHY_MPLLB_SSC_STEPSIZE		REG_GENMASK(31, 11)
+
+#define SNPS_PHY_MPLLB_DIV2(phy)		_MMIO_SNPS(phy, 0x16801C)
+#define   SNPS_PHY_MPLLB_HDMI_PIXEL_CLK_DIV	REG_GENMASK(19, 18)
+#define   SNPS_PHY_MPLLB_HDMI_DIV		REG_GENMASK(17, 15)
+#define   SNPS_PHY_MPLLB_REF_CLK_DIV		REG_GENMASK(14, 12)
+#define   SNPS_PHY_MPLLB_MULTIPLIER		REG_GENMASK(11, 0)
+
+#define SNPS_PHY_REF_CONTROL(phy)		_MMIO_SNPS(phy, 0x168188)
+#define   SNPS_PHY_REF_CONTROL_REF_RANGE	REG_GENMASK(31, 27)
+
+#define SNPS_PHY_TX_REQ(phy)			_MMIO_SNPS(phy, 0x168200)
+#define   SNPS_PHY_TX_REQ_LN_DIS_PWR_STATE_PSR	REG_GENMASK(31, 30)
+
+#define SNPS_PHY_TX_EQ(ln, phy)			_MMIO_SNPS_LN(ln, phy, 0x168300)
+#define   SNPS_PHY_TX_EQ_MAIN			REG_GENMASK(23, 18)
+#define   SNPS_PHY_TX_EQ_POST			REG_GENMASK(15, 10)
+#define   SNPS_PHY_TX_EQ_PRE			REG_GENMASK(7, 2)
+
+#endif /* __INTEL_SNPS_PHY_REGS__ */
diff --git a/drivers/gpu/drm/i915/display/intel_sprite.c b/drivers/gpu/drm/i915/display/intel_sprite.c
new file mode 100644
index 000000000..7649c50b5
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_sprite.c
@@ -0,0 +1,1848 @@
+/*
+ * Copyright © 2011 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Authors:
+ *   Jesse Barnes <jbarnes@virtuousgeek.org>
+ *
+ * New plane/sprite handling.
+ *
+ * The older chips had a separate interface for programming plane related
+ * registers; newer ones are much simpler and we can use the new DRM plane
+ * support.
+ */
+
+#include <linux/string_helpers.h>
+
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_blend.h>
+#include <drm/drm_color_mgmt.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_damage_helper.h>
+#include <drm/drm_fourcc.h>
+#include <drm/drm_rect.h>
+
+#include "i915_drv.h"
+#include "i915_vgpu.h"
+#include "i9xx_plane.h"
+#include "intel_atomic_plane.h"
+#include "intel_crtc.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_fb.h"
+#include "intel_frontbuffer.h"
+#include "intel_sprite.h"
+#include "intel_vrr.h"
+
+int intel_plane_check_src_coordinates(struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *i915 = to_i915(plane_state->uapi.plane->dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	struct drm_rect *src = &plane_state->uapi.src;
+	u32 src_x, src_y, src_w, src_h, hsub, vsub;
+	bool rotated = drm_rotation_90_or_270(plane_state->hw.rotation);
+
+	/*
+	 * FIXME hsub/vsub vs. block size is a mess. Pre-tgl CCS
+	 * abuses hsub/vsub so we can't use them here. But as they
+	 * are limited to 32bpp RGB formats we don't actually need
+	 * to check anything.
+	 */
+	if (fb->modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
+	    fb->modifier == I915_FORMAT_MOD_Yf_TILED_CCS)
+		return 0;
+
+	/*
+	 * Hardware doesn't handle subpixel coordinates.
+	 * Adjust to (macro)pixel boundary, but be careful not to
+	 * increase the source viewport size, because that could
+	 * push the downscaling factor out of bounds.
+	 */
+	src_x = src->x1 >> 16;
+	src_w = drm_rect_width(src) >> 16;
+	src_y = src->y1 >> 16;
+	src_h = drm_rect_height(src) >> 16;
+
+	drm_rect_init(src, src_x << 16, src_y << 16,
+		      src_w << 16, src_h << 16);
+
+	if (fb->format->format == DRM_FORMAT_RGB565 && rotated) {
+		hsub = 2;
+		vsub = 2;
+	} else {
+		hsub = fb->format->hsub;
+		vsub = fb->format->vsub;
+	}
+
+	if (rotated)
+		hsub = vsub = max(hsub, vsub);
+
+	if (src_x % hsub || src_w % hsub) {
+		drm_dbg_kms(&i915->drm, "src x/w (%u, %u) must be a multiple of %u (rotated: %s)\n",
+			    src_x, src_w, hsub, str_yes_no(rotated));
+		return -EINVAL;
+	}
+
+	if (src_y % vsub || src_h % vsub) {
+		drm_dbg_kms(&i915->drm, "src y/h (%u, %u) must be a multiple of %u (rotated: %s)\n",
+			    src_y, src_h, vsub, str_yes_no(rotated));
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static void i9xx_plane_linear_gamma(u16 gamma[8])
+{
+	/* The points are not evenly spaced. */
+	static const u8 in[8] = { 0, 1, 2, 4, 8, 16, 24, 32 };
+	int i;
+
+	for (i = 0; i < 8; i++)
+		gamma[i] = (in[i] << 8) / 32;
+}
+
+static void
+chv_sprite_update_csc(const struct intel_plane_state *plane_state)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	enum plane_id plane_id = plane->id;
+	/*
+	 * |r|   | c0 c1 c2 |   |cr|
+	 * |g| = | c3 c4 c5 | x |y |
+	 * |b|   | c6 c7 c8 |   |cb|
+	 *
+	 * Coefficients are s3.12.
+	 *
+	 * Cb and Cr apparently come in as signed already, and
+	 * we always get full range data in on account of CLRC0/1.
+	 */
+	static const s16 csc_matrix[][9] = {
+		/* BT.601 full range YCbCr -> full range RGB */
+		[DRM_COLOR_YCBCR_BT601] = {
+			 5743, 4096,     0,
+			-2925, 4096, -1410,
+			    0, 4096,  7258,
+		},
+		/* BT.709 full range YCbCr -> full range RGB */
+		[DRM_COLOR_YCBCR_BT709] = {
+			 6450, 4096,     0,
+			-1917, 4096,  -767,
+			    0, 4096,  7601,
+		},
+	};
+	const s16 *csc = csc_matrix[plane_state->hw.color_encoding];
+
+	/* Seems RGB data bypasses the CSC always */
+	if (!fb->format->is_yuv)
+		return;
+
+	intel_de_write_fw(dev_priv, SPCSCYGOFF(plane_id),
+			  SPCSC_OOFF(0) | SPCSC_IOFF(0));
+	intel_de_write_fw(dev_priv, SPCSCCBOFF(plane_id),
+			  SPCSC_OOFF(0) | SPCSC_IOFF(0));
+	intel_de_write_fw(dev_priv, SPCSCCROFF(plane_id),
+			  SPCSC_OOFF(0) | SPCSC_IOFF(0));
+
+	intel_de_write_fw(dev_priv, SPCSCC01(plane_id),
+			  SPCSC_C1(csc[1]) | SPCSC_C0(csc[0]));
+	intel_de_write_fw(dev_priv, SPCSCC23(plane_id),
+			  SPCSC_C1(csc[3]) | SPCSC_C0(csc[2]));
+	intel_de_write_fw(dev_priv, SPCSCC45(plane_id),
+			  SPCSC_C1(csc[5]) | SPCSC_C0(csc[4]));
+	intel_de_write_fw(dev_priv, SPCSCC67(plane_id),
+			  SPCSC_C1(csc[7]) | SPCSC_C0(csc[6]));
+	intel_de_write_fw(dev_priv, SPCSCC8(plane_id), SPCSC_C0(csc[8]));
+
+	intel_de_write_fw(dev_priv, SPCSCYGICLAMP(plane_id),
+			  SPCSC_IMAX(1023) | SPCSC_IMIN(0));
+	intel_de_write_fw(dev_priv, SPCSCCBICLAMP(plane_id),
+			  SPCSC_IMAX(512) | SPCSC_IMIN(-512));
+	intel_de_write_fw(dev_priv, SPCSCCRICLAMP(plane_id),
+			  SPCSC_IMAX(512) | SPCSC_IMIN(-512));
+
+	intel_de_write_fw(dev_priv, SPCSCYGOCLAMP(plane_id),
+			  SPCSC_OMAX(1023) | SPCSC_OMIN(0));
+	intel_de_write_fw(dev_priv, SPCSCCBOCLAMP(plane_id),
+			  SPCSC_OMAX(1023) | SPCSC_OMIN(0));
+	intel_de_write_fw(dev_priv, SPCSCCROCLAMP(plane_id),
+			  SPCSC_OMAX(1023) | SPCSC_OMIN(0));
+}
+
+#define SIN_0 0
+#define COS_0 1
+
+static void
+vlv_sprite_update_clrc(const struct intel_plane_state *plane_state)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	enum pipe pipe = plane->pipe;
+	enum plane_id plane_id = plane->id;
+	int contrast, brightness, sh_scale, sh_sin, sh_cos;
+
+	if (fb->format->is_yuv &&
+	    plane_state->hw.color_range == DRM_COLOR_YCBCR_LIMITED_RANGE) {
+		/*
+		 * Expand limited range to full range:
+		 * Contrast is applied first and is used to expand Y range.
+		 * Brightness is applied second and is used to remove the
+		 * offset from Y. Saturation/hue is used to expand CbCr range.
+		 */
+		contrast = DIV_ROUND_CLOSEST(255 << 6, 235 - 16);
+		brightness = -DIV_ROUND_CLOSEST(16 * 255, 235 - 16);
+		sh_scale = DIV_ROUND_CLOSEST(128 << 7, 240 - 128);
+		sh_sin = SIN_0 * sh_scale;
+		sh_cos = COS_0 * sh_scale;
+	} else {
+		/* Pass-through everything. */
+		contrast = 1 << 6;
+		brightness = 0;
+		sh_scale = 1 << 7;
+		sh_sin = SIN_0 * sh_scale;
+		sh_cos = COS_0 * sh_scale;
+	}
+
+	/* FIXME these register are single buffered :( */
+	intel_de_write_fw(dev_priv, SPCLRC0(pipe, plane_id),
+			  SP_CONTRAST(contrast) | SP_BRIGHTNESS(brightness));
+	intel_de_write_fw(dev_priv, SPCLRC1(pipe, plane_id),
+			  SP_SH_SIN(sh_sin) | SP_SH_COS(sh_cos));
+}
+
+static void
+vlv_plane_ratio(const struct intel_crtc_state *crtc_state,
+		const struct intel_plane_state *plane_state,
+		unsigned int *num, unsigned int *den)
+{
+	u8 active_planes = crtc_state->active_planes & ~BIT(PLANE_CURSOR);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	unsigned int cpp = fb->format->cpp[0];
+
+	/*
+	 * VLV bspec only considers cases where all three planes are
+	 * enabled, and cases where the primary and one sprite is enabled.
+	 * Let's assume the case with just two sprites enabled also
+	 * maps to the latter case.
+	 */
+	if (hweight8(active_planes) == 3) {
+		switch (cpp) {
+		case 8:
+			*num = 11;
+			*den = 8;
+			break;
+		case 4:
+			*num = 18;
+			*den = 16;
+			break;
+		default:
+			*num = 1;
+			*den = 1;
+			break;
+		}
+	} else if (hweight8(active_planes) == 2) {
+		switch (cpp) {
+		case 8:
+			*num = 10;
+			*den = 8;
+			break;
+		case 4:
+			*num = 17;
+			*den = 16;
+			break;
+		default:
+			*num = 1;
+			*den = 1;
+			break;
+		}
+	} else {
+		switch (cpp) {
+		case 8:
+			*num = 10;
+			*den = 8;
+			break;
+		default:
+			*num = 1;
+			*den = 1;
+			break;
+		}
+	}
+}
+
+int vlv_plane_min_cdclk(const struct intel_crtc_state *crtc_state,
+			const struct intel_plane_state *plane_state)
+{
+	unsigned int pixel_rate;
+	unsigned int num, den;
+
+	/*
+	 * Note that crtc_state->pixel_rate accounts for both
+	 * horizontal and vertical panel fitter downscaling factors.
+	 * Pre-HSW bspec tells us to only consider the horizontal
+	 * downscaling factor here. We ignore that and just consider
+	 * both for simplicity.
+	 */
+	pixel_rate = crtc_state->pixel_rate;
+
+	vlv_plane_ratio(crtc_state, plane_state, &num, &den);
+
+	return DIV_ROUND_UP(pixel_rate * num, den);
+}
+
+static u32 vlv_sprite_ctl_crtc(const struct intel_crtc_state *crtc_state)
+{
+	u32 sprctl = 0;
+
+	if (crtc_state->gamma_enable)
+		sprctl |= SP_PIPE_GAMMA_ENABLE;
+
+	return sprctl;
+}
+
+static u32 vlv_sprite_ctl(const struct intel_crtc_state *crtc_state,
+			  const struct intel_plane_state *plane_state)
+{
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	unsigned int rotation = plane_state->hw.rotation;
+	const struct drm_intel_sprite_colorkey *key = &plane_state->ckey;
+	u32 sprctl;
+
+	sprctl = SP_ENABLE;
+
+	switch (fb->format->format) {
+	case DRM_FORMAT_YUYV:
+		sprctl |= SP_FORMAT_YUV422 | SP_YUV_ORDER_YUYV;
+		break;
+	case DRM_FORMAT_YVYU:
+		sprctl |= SP_FORMAT_YUV422 | SP_YUV_ORDER_YVYU;
+		break;
+	case DRM_FORMAT_UYVY:
+		sprctl |= SP_FORMAT_YUV422 | SP_YUV_ORDER_UYVY;
+		break;
+	case DRM_FORMAT_VYUY:
+		sprctl |= SP_FORMAT_YUV422 | SP_YUV_ORDER_VYUY;
+		break;
+	case DRM_FORMAT_C8:
+		sprctl |= SP_FORMAT_8BPP;
+		break;
+	case DRM_FORMAT_RGB565:
+		sprctl |= SP_FORMAT_BGR565;
+		break;
+	case DRM_FORMAT_XRGB8888:
+		sprctl |= SP_FORMAT_BGRX8888;
+		break;
+	case DRM_FORMAT_ARGB8888:
+		sprctl |= SP_FORMAT_BGRA8888;
+		break;
+	case DRM_FORMAT_XBGR2101010:
+		sprctl |= SP_FORMAT_RGBX1010102;
+		break;
+	case DRM_FORMAT_ABGR2101010:
+		sprctl |= SP_FORMAT_RGBA1010102;
+		break;
+	case DRM_FORMAT_XRGB2101010:
+		sprctl |= SP_FORMAT_BGRX1010102;
+		break;
+	case DRM_FORMAT_ARGB2101010:
+		sprctl |= SP_FORMAT_BGRA1010102;
+		break;
+	case DRM_FORMAT_XBGR8888:
+		sprctl |= SP_FORMAT_RGBX8888;
+		break;
+	case DRM_FORMAT_ABGR8888:
+		sprctl |= SP_FORMAT_RGBA8888;
+		break;
+	default:
+		MISSING_CASE(fb->format->format);
+		return 0;
+	}
+
+	if (plane_state->hw.color_encoding == DRM_COLOR_YCBCR_BT709)
+		sprctl |= SP_YUV_FORMAT_BT709;
+
+	if (fb->modifier == I915_FORMAT_MOD_X_TILED)
+		sprctl |= SP_TILED;
+
+	if (rotation & DRM_MODE_ROTATE_180)
+		sprctl |= SP_ROTATE_180;
+
+	if (rotation & DRM_MODE_REFLECT_X)
+		sprctl |= SP_MIRROR;
+
+	if (key->flags & I915_SET_COLORKEY_SOURCE)
+		sprctl |= SP_SOURCE_KEY;
+
+	return sprctl;
+}
+
+static void vlv_sprite_update_gamma(const struct intel_plane_state *plane_state)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	enum pipe pipe = plane->pipe;
+	enum plane_id plane_id = plane->id;
+	u16 gamma[8];
+	int i;
+
+	/* Seems RGB data bypasses the gamma always */
+	if (!fb->format->is_yuv)
+		return;
+
+	i9xx_plane_linear_gamma(gamma);
+
+	/* FIXME these register are single buffered :( */
+	/* The two end points are implicit (0.0 and 1.0) */
+	for (i = 1; i < 8 - 1; i++)
+		intel_de_write_fw(dev_priv, SPGAMC(pipe, plane_id, i - 1),
+				  gamma[i] << 16 | gamma[i] << 8 | gamma[i]);
+}
+
+static void
+vlv_sprite_update_noarm(struct intel_plane *plane,
+			const struct intel_crtc_state *crtc_state,
+			const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum pipe pipe = plane->pipe;
+	enum plane_id plane_id = plane->id;
+	int crtc_x = plane_state->uapi.dst.x1;
+	int crtc_y = plane_state->uapi.dst.y1;
+	u32 crtc_w = drm_rect_width(&plane_state->uapi.dst);
+	u32 crtc_h = drm_rect_height(&plane_state->uapi.dst);
+
+	intel_de_write_fw(dev_priv, SPSTRIDE(pipe, plane_id),
+			  plane_state->view.color_plane[0].mapping_stride);
+	intel_de_write_fw(dev_priv, SPPOS(pipe, plane_id),
+			  SP_POS_Y(crtc_y) | SP_POS_X(crtc_x));
+	intel_de_write_fw(dev_priv, SPSIZE(pipe, plane_id),
+			  SP_HEIGHT(crtc_h - 1) | SP_WIDTH(crtc_w - 1));
+}
+
+static void
+vlv_sprite_update_arm(struct intel_plane *plane,
+		      const struct intel_crtc_state *crtc_state,
+		      const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum pipe pipe = plane->pipe;
+	enum plane_id plane_id = plane->id;
+	const struct drm_intel_sprite_colorkey *key = &plane_state->ckey;
+	u32 sprsurf_offset = plane_state->view.color_plane[0].offset;
+	u32 x = plane_state->view.color_plane[0].x;
+	u32 y = plane_state->view.color_plane[0].y;
+	u32 sprctl, linear_offset;
+
+	sprctl = plane_state->ctl | vlv_sprite_ctl_crtc(crtc_state);
+
+	linear_offset = intel_fb_xy_to_linear(x, y, plane_state, 0);
+
+	if (IS_CHERRYVIEW(dev_priv) && pipe == PIPE_B)
+		chv_sprite_update_csc(plane_state);
+
+	if (key->flags) {
+		intel_de_write_fw(dev_priv, SPKEYMINVAL(pipe, plane_id),
+				  key->min_value);
+		intel_de_write_fw(dev_priv, SPKEYMSK(pipe, plane_id),
+				  key->channel_mask);
+		intel_de_write_fw(dev_priv, SPKEYMAXVAL(pipe, plane_id),
+				  key->max_value);
+	}
+
+	intel_de_write_fw(dev_priv, SPCONSTALPHA(pipe, plane_id), 0);
+
+	intel_de_write_fw(dev_priv, SPLINOFF(pipe, plane_id), linear_offset);
+	intel_de_write_fw(dev_priv, SPTILEOFF(pipe, plane_id),
+			  SP_OFFSET_Y(y) | SP_OFFSET_X(x));
+
+	/*
+	 * The control register self-arms if the plane was previously
+	 * disabled. Try to make the plane enable atomic by writing
+	 * the control register just before the surface register.
+	 */
+	intel_de_write_fw(dev_priv, SPCNTR(pipe, plane_id), sprctl);
+	intel_de_write_fw(dev_priv, SPSURF(pipe, plane_id),
+			  intel_plane_ggtt_offset(plane_state) + sprsurf_offset);
+
+	vlv_sprite_update_clrc(plane_state);
+	vlv_sprite_update_gamma(plane_state);
+}
+
+static void
+vlv_sprite_disable_arm(struct intel_plane *plane,
+		       const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum pipe pipe = plane->pipe;
+	enum plane_id plane_id = plane->id;
+
+	intel_de_write_fw(dev_priv, SPCNTR(pipe, plane_id), 0);
+	intel_de_write_fw(dev_priv, SPSURF(pipe, plane_id), 0);
+}
+
+static bool
+vlv_sprite_get_hw_state(struct intel_plane *plane,
+			enum pipe *pipe)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum intel_display_power_domain power_domain;
+	enum plane_id plane_id = plane->id;
+	intel_wakeref_t wakeref;
+	bool ret;
+
+	power_domain = POWER_DOMAIN_PIPE(plane->pipe);
+	wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
+	if (!wakeref)
+		return false;
+
+	ret = intel_de_read(dev_priv, SPCNTR(plane->pipe, plane_id)) & SP_ENABLE;
+
+	*pipe = plane->pipe;
+
+	intel_display_power_put(dev_priv, power_domain, wakeref);
+
+	return ret;
+}
+
+static void ivb_plane_ratio(const struct intel_crtc_state *crtc_state,
+			    const struct intel_plane_state *plane_state,
+			    unsigned int *num, unsigned int *den)
+{
+	u8 active_planes = crtc_state->active_planes & ~BIT(PLANE_CURSOR);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	unsigned int cpp = fb->format->cpp[0];
+
+	if (hweight8(active_planes) == 2) {
+		switch (cpp) {
+		case 8:
+			*num = 10;
+			*den = 8;
+			break;
+		case 4:
+			*num = 17;
+			*den = 16;
+			break;
+		default:
+			*num = 1;
+			*den = 1;
+			break;
+		}
+	} else {
+		switch (cpp) {
+		case 8:
+			*num = 9;
+			*den = 8;
+			break;
+		default:
+			*num = 1;
+			*den = 1;
+			break;
+		}
+	}
+}
+
+static void ivb_plane_ratio_scaling(const struct intel_crtc_state *crtc_state,
+				    const struct intel_plane_state *plane_state,
+				    unsigned int *num, unsigned int *den)
+{
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	unsigned int cpp = fb->format->cpp[0];
+
+	switch (cpp) {
+	case 8:
+		*num = 12;
+		*den = 8;
+		break;
+	case 4:
+		*num = 19;
+		*den = 16;
+		break;
+	case 2:
+		*num = 33;
+		*den = 32;
+		break;
+	default:
+		*num = 1;
+		*den = 1;
+		break;
+	}
+}
+
+int ivb_plane_min_cdclk(const struct intel_crtc_state *crtc_state,
+			const struct intel_plane_state *plane_state)
+{
+	unsigned int pixel_rate;
+	unsigned int num, den;
+
+	/*
+	 * Note that crtc_state->pixel_rate accounts for both
+	 * horizontal and vertical panel fitter downscaling factors.
+	 * Pre-HSW bspec tells us to only consider the horizontal
+	 * downscaling factor here. We ignore that and just consider
+	 * both for simplicity.
+	 */
+	pixel_rate = crtc_state->pixel_rate;
+
+	ivb_plane_ratio(crtc_state, plane_state, &num, &den);
+
+	return DIV_ROUND_UP(pixel_rate * num, den);
+}
+
+static int ivb_sprite_min_cdclk(const struct intel_crtc_state *crtc_state,
+				const struct intel_plane_state *plane_state)
+{
+	unsigned int src_w, dst_w, pixel_rate;
+	unsigned int num, den;
+
+	/*
+	 * Note that crtc_state->pixel_rate accounts for both
+	 * horizontal and vertical panel fitter downscaling factors.
+	 * Pre-HSW bspec tells us to only consider the horizontal
+	 * downscaling factor here. We ignore that and just consider
+	 * both for simplicity.
+	 */
+	pixel_rate = crtc_state->pixel_rate;
+
+	src_w = drm_rect_width(&plane_state->uapi.src) >> 16;
+	dst_w = drm_rect_width(&plane_state->uapi.dst);
+
+	if (src_w != dst_w)
+		ivb_plane_ratio_scaling(crtc_state, plane_state, &num, &den);
+	else
+		ivb_plane_ratio(crtc_state, plane_state, &num, &den);
+
+	/* Horizontal downscaling limits the maximum pixel rate */
+	dst_w = min(src_w, dst_w);
+
+	return DIV_ROUND_UP_ULL(mul_u32_u32(pixel_rate, num * src_w),
+				den * dst_w);
+}
+
+static void hsw_plane_ratio(const struct intel_crtc_state *crtc_state,
+			    const struct intel_plane_state *plane_state,
+			    unsigned int *num, unsigned int *den)
+{
+	u8 active_planes = crtc_state->active_planes & ~BIT(PLANE_CURSOR);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	unsigned int cpp = fb->format->cpp[0];
+
+	if (hweight8(active_planes) == 2) {
+		switch (cpp) {
+		case 8:
+			*num = 10;
+			*den = 8;
+			break;
+		default:
+			*num = 1;
+			*den = 1;
+			break;
+		}
+	} else {
+		switch (cpp) {
+		case 8:
+			*num = 9;
+			*den = 8;
+			break;
+		default:
+			*num = 1;
+			*den = 1;
+			break;
+		}
+	}
+}
+
+int hsw_plane_min_cdclk(const struct intel_crtc_state *crtc_state,
+			const struct intel_plane_state *plane_state)
+{
+	unsigned int pixel_rate = crtc_state->pixel_rate;
+	unsigned int num, den;
+
+	hsw_plane_ratio(crtc_state, plane_state, &num, &den);
+
+	return DIV_ROUND_UP(pixel_rate * num, den);
+}
+
+static u32 ivb_sprite_ctl_crtc(const struct intel_crtc_state *crtc_state)
+{
+	u32 sprctl = 0;
+
+	if (crtc_state->gamma_enable)
+		sprctl |= SPRITE_PIPE_GAMMA_ENABLE;
+
+	if (crtc_state->csc_enable)
+		sprctl |= SPRITE_PIPE_CSC_ENABLE;
+
+	return sprctl;
+}
+
+static bool ivb_need_sprite_gamma(const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv =
+		to_i915(plane_state->uapi.plane->dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+
+	return fb->format->cpp[0] == 8 &&
+		(IS_IVYBRIDGE(dev_priv) || IS_HASWELL(dev_priv));
+}
+
+static u32 ivb_sprite_ctl(const struct intel_crtc_state *crtc_state,
+			  const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv =
+		to_i915(plane_state->uapi.plane->dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	unsigned int rotation = plane_state->hw.rotation;
+	const struct drm_intel_sprite_colorkey *key = &plane_state->ckey;
+	u32 sprctl;
+
+	sprctl = SPRITE_ENABLE;
+
+	if (IS_IVYBRIDGE(dev_priv))
+		sprctl |= SPRITE_TRICKLE_FEED_DISABLE;
+
+	switch (fb->format->format) {
+	case DRM_FORMAT_XBGR8888:
+		sprctl |= SPRITE_FORMAT_RGBX888 | SPRITE_RGB_ORDER_RGBX;
+		break;
+	case DRM_FORMAT_XRGB8888:
+		sprctl |= SPRITE_FORMAT_RGBX888;
+		break;
+	case DRM_FORMAT_XBGR2101010:
+		sprctl |= SPRITE_FORMAT_RGBX101010 | SPRITE_RGB_ORDER_RGBX;
+		break;
+	case DRM_FORMAT_XRGB2101010:
+		sprctl |= SPRITE_FORMAT_RGBX101010;
+		break;
+	case DRM_FORMAT_XBGR16161616F:
+		sprctl |= SPRITE_FORMAT_RGBX161616 | SPRITE_RGB_ORDER_RGBX;
+		break;
+	case DRM_FORMAT_XRGB16161616F:
+		sprctl |= SPRITE_FORMAT_RGBX161616;
+		break;
+	case DRM_FORMAT_YUYV:
+		sprctl |= SPRITE_FORMAT_YUV422 | SPRITE_YUV_ORDER_YUYV;
+		break;
+	case DRM_FORMAT_YVYU:
+		sprctl |= SPRITE_FORMAT_YUV422 | SPRITE_YUV_ORDER_YVYU;
+		break;
+	case DRM_FORMAT_UYVY:
+		sprctl |= SPRITE_FORMAT_YUV422 | SPRITE_YUV_ORDER_UYVY;
+		break;
+	case DRM_FORMAT_VYUY:
+		sprctl |= SPRITE_FORMAT_YUV422 | SPRITE_YUV_ORDER_VYUY;
+		break;
+	default:
+		MISSING_CASE(fb->format->format);
+		return 0;
+	}
+
+	if (!ivb_need_sprite_gamma(plane_state))
+		sprctl |= SPRITE_PLANE_GAMMA_DISABLE;
+
+	if (plane_state->hw.color_encoding == DRM_COLOR_YCBCR_BT709)
+		sprctl |= SPRITE_YUV_TO_RGB_CSC_FORMAT_BT709;
+
+	if (plane_state->hw.color_range == DRM_COLOR_YCBCR_FULL_RANGE)
+		sprctl |= SPRITE_YUV_RANGE_CORRECTION_DISABLE;
+
+	if (fb->modifier == I915_FORMAT_MOD_X_TILED)
+		sprctl |= SPRITE_TILED;
+
+	if (rotation & DRM_MODE_ROTATE_180)
+		sprctl |= SPRITE_ROTATE_180;
+
+	if (key->flags & I915_SET_COLORKEY_DESTINATION)
+		sprctl |= SPRITE_DEST_KEY;
+	else if (key->flags & I915_SET_COLORKEY_SOURCE)
+		sprctl |= SPRITE_SOURCE_KEY;
+
+	return sprctl;
+}
+
+static void ivb_sprite_linear_gamma(const struct intel_plane_state *plane_state,
+				    u16 gamma[18])
+{
+	int scale, i;
+
+	/*
+	 * WaFP16GammaEnabling:ivb,hsw
+	 * "Workaround : When using the 64-bit format, the sprite output
+	 *  on each color channel has one quarter amplitude. It can be
+	 *  brought up to full amplitude by using sprite internal gamma
+	 *  correction, pipe gamma correction, or pipe color space
+	 *  conversion to multiply the sprite output by four."
+	 */
+	scale = 4;
+
+	for (i = 0; i < 16; i++)
+		gamma[i] = min((scale * i << 10) / 16, (1 << 10) - 1);
+
+	gamma[i] = min((scale * i << 10) / 16, 1 << 10);
+	i++;
+
+	gamma[i] = 3 << 10;
+	i++;
+}
+
+static void ivb_sprite_update_gamma(const struct intel_plane_state *plane_state)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum pipe pipe = plane->pipe;
+	u16 gamma[18];
+	int i;
+
+	if (!ivb_need_sprite_gamma(plane_state))
+		return;
+
+	ivb_sprite_linear_gamma(plane_state, gamma);
+
+	/* FIXME these register are single buffered :( */
+	for (i = 0; i < 16; i++)
+		intel_de_write_fw(dev_priv, SPRGAMC(pipe, i),
+				  gamma[i] << 20 | gamma[i] << 10 | gamma[i]);
+
+	intel_de_write_fw(dev_priv, SPRGAMC16(pipe, 0), gamma[i]);
+	intel_de_write_fw(dev_priv, SPRGAMC16(pipe, 1), gamma[i]);
+	intel_de_write_fw(dev_priv, SPRGAMC16(pipe, 2), gamma[i]);
+	i++;
+
+	intel_de_write_fw(dev_priv, SPRGAMC17(pipe, 0), gamma[i]);
+	intel_de_write_fw(dev_priv, SPRGAMC17(pipe, 1), gamma[i]);
+	intel_de_write_fw(dev_priv, SPRGAMC17(pipe, 2), gamma[i]);
+	i++;
+}
+
+static void
+ivb_sprite_update_noarm(struct intel_plane *plane,
+			const struct intel_crtc_state *crtc_state,
+			const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum pipe pipe = plane->pipe;
+	int crtc_x = plane_state->uapi.dst.x1;
+	int crtc_y = plane_state->uapi.dst.y1;
+	u32 crtc_w = drm_rect_width(&plane_state->uapi.dst);
+	u32 crtc_h = drm_rect_height(&plane_state->uapi.dst);
+	u32 src_w = drm_rect_width(&plane_state->uapi.src) >> 16;
+	u32 src_h = drm_rect_height(&plane_state->uapi.src) >> 16;
+	u32 sprscale = 0;
+
+	if (crtc_w != src_w || crtc_h != src_h)
+		sprscale = SPRITE_SCALE_ENABLE |
+			SPRITE_SRC_WIDTH(src_w - 1) |
+			SPRITE_SRC_HEIGHT(src_h - 1);
+
+	intel_de_write_fw(dev_priv, SPRSTRIDE(pipe),
+			  plane_state->view.color_plane[0].mapping_stride);
+	intel_de_write_fw(dev_priv, SPRPOS(pipe),
+			  SPRITE_POS_Y(crtc_y) | SPRITE_POS_X(crtc_x));
+	intel_de_write_fw(dev_priv, SPRSIZE(pipe),
+			  SPRITE_HEIGHT(crtc_h - 1) | SPRITE_WIDTH(crtc_w - 1));
+	if (IS_IVYBRIDGE(dev_priv))
+		intel_de_write_fw(dev_priv, SPRSCALE(pipe), sprscale);
+}
+
+static void
+ivb_sprite_update_arm(struct intel_plane *plane,
+		      const struct intel_crtc_state *crtc_state,
+		      const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum pipe pipe = plane->pipe;
+	const struct drm_intel_sprite_colorkey *key = &plane_state->ckey;
+	u32 sprsurf_offset = plane_state->view.color_plane[0].offset;
+	u32 x = plane_state->view.color_plane[0].x;
+	u32 y = plane_state->view.color_plane[0].y;
+	u32 sprctl, linear_offset;
+
+	sprctl = plane_state->ctl | ivb_sprite_ctl_crtc(crtc_state);
+
+	linear_offset = intel_fb_xy_to_linear(x, y, plane_state, 0);
+
+	if (key->flags) {
+		intel_de_write_fw(dev_priv, SPRKEYVAL(pipe), key->min_value);
+		intel_de_write_fw(dev_priv, SPRKEYMSK(pipe),
+				  key->channel_mask);
+		intel_de_write_fw(dev_priv, SPRKEYMAX(pipe), key->max_value);
+	}
+
+	/* HSW consolidates SPRTILEOFF and SPRLINOFF into a single SPROFFSET
+	 * register */
+	if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
+		intel_de_write_fw(dev_priv, SPROFFSET(pipe),
+				  SPRITE_OFFSET_Y(y) | SPRITE_OFFSET_X(x));
+	} else {
+		intel_de_write_fw(dev_priv, SPRLINOFF(pipe), linear_offset);
+		intel_de_write_fw(dev_priv, SPRTILEOFF(pipe),
+				  SPRITE_OFFSET_Y(y) | SPRITE_OFFSET_X(x));
+	}
+
+	/*
+	 * The control register self-arms if the plane was previously
+	 * disabled. Try to make the plane enable atomic by writing
+	 * the control register just before the surface register.
+	 */
+	intel_de_write_fw(dev_priv, SPRCTL(pipe), sprctl);
+	intel_de_write_fw(dev_priv, SPRSURF(pipe),
+			  intel_plane_ggtt_offset(plane_state) + sprsurf_offset);
+
+	ivb_sprite_update_gamma(plane_state);
+}
+
+static void
+ivb_sprite_disable_arm(struct intel_plane *plane,
+		       const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum pipe pipe = plane->pipe;
+
+	intel_de_write_fw(dev_priv, SPRCTL(pipe), 0);
+	/* Disable the scaler */
+	if (IS_IVYBRIDGE(dev_priv))
+		intel_de_write_fw(dev_priv, SPRSCALE(pipe), 0);
+	intel_de_write_fw(dev_priv, SPRSURF(pipe), 0);
+}
+
+static bool
+ivb_sprite_get_hw_state(struct intel_plane *plane,
+			enum pipe *pipe)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum intel_display_power_domain power_domain;
+	intel_wakeref_t wakeref;
+	bool ret;
+
+	power_domain = POWER_DOMAIN_PIPE(plane->pipe);
+	wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
+	if (!wakeref)
+		return false;
+
+	ret =  intel_de_read(dev_priv, SPRCTL(plane->pipe)) & SPRITE_ENABLE;
+
+	*pipe = plane->pipe;
+
+	intel_display_power_put(dev_priv, power_domain, wakeref);
+
+	return ret;
+}
+
+static int g4x_sprite_min_cdclk(const struct intel_crtc_state *crtc_state,
+				const struct intel_plane_state *plane_state)
+{
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	unsigned int hscale, pixel_rate;
+	unsigned int limit, decimate;
+
+	/*
+	 * Note that crtc_state->pixel_rate accounts for both
+	 * horizontal and vertical panel fitter downscaling factors.
+	 * Pre-HSW bspec tells us to only consider the horizontal
+	 * downscaling factor here. We ignore that and just consider
+	 * both for simplicity.
+	 */
+	pixel_rate = crtc_state->pixel_rate;
+
+	/* Horizontal downscaling limits the maximum pixel rate */
+	hscale = drm_rect_calc_hscale(&plane_state->uapi.src,
+				      &plane_state->uapi.dst,
+				      0, INT_MAX);
+	hscale = max(hscale, 0x10000u);
+
+	/* Decimation steps at 2x,4x,8x,16x */
+	decimate = ilog2(hscale >> 16);
+	hscale >>= decimate;
+
+	/* Starting limit is 90% of cdclk */
+	limit = 9;
+
+	/* -10% per decimation step */
+	limit -= decimate;
+
+	/* -10% for RGB */
+	if (!fb->format->is_yuv)
+		limit--;
+
+	/*
+	 * We should also do -10% if sprite scaling is enabled
+	 * on the other pipe, but we can't really check for that,
+	 * so we ignore it.
+	 */
+
+	return DIV_ROUND_UP_ULL(mul_u32_u32(pixel_rate, 10 * hscale),
+				limit << 16);
+}
+
+static unsigned int
+g4x_sprite_max_stride(struct intel_plane *plane,
+		      u32 pixel_format, u64 modifier,
+		      unsigned int rotation)
+{
+	const struct drm_format_info *info = drm_format_info(pixel_format);
+	int cpp = info->cpp[0];
+
+	/* Limit to 4k pixels to guarantee TILEOFF.x doesn't get too big. */
+	if (modifier == I915_FORMAT_MOD_X_TILED)
+		return min(4096 * cpp, 16 * 1024);
+	else
+		return 16 * 1024;
+}
+
+static unsigned int
+hsw_sprite_max_stride(struct intel_plane *plane,
+		      u32 pixel_format, u64 modifier,
+		      unsigned int rotation)
+{
+	const struct drm_format_info *info = drm_format_info(pixel_format);
+	int cpp = info->cpp[0];
+
+	/* Limit to 8k pixels to guarantee OFFSET.x doesn't get too big. */
+	return min(8192 * cpp, 16 * 1024);
+}
+
+static u32 g4x_sprite_ctl_crtc(const struct intel_crtc_state *crtc_state)
+{
+	u32 dvscntr = 0;
+
+	if (crtc_state->gamma_enable)
+		dvscntr |= DVS_PIPE_GAMMA_ENABLE;
+
+	if (crtc_state->csc_enable)
+		dvscntr |= DVS_PIPE_CSC_ENABLE;
+
+	return dvscntr;
+}
+
+static u32 g4x_sprite_ctl(const struct intel_crtc_state *crtc_state,
+			  const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv =
+		to_i915(plane_state->uapi.plane->dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	unsigned int rotation = plane_state->hw.rotation;
+	const struct drm_intel_sprite_colorkey *key = &plane_state->ckey;
+	u32 dvscntr;
+
+	dvscntr = DVS_ENABLE;
+
+	if (IS_SANDYBRIDGE(dev_priv))
+		dvscntr |= DVS_TRICKLE_FEED_DISABLE;
+
+	switch (fb->format->format) {
+	case DRM_FORMAT_XBGR8888:
+		dvscntr |= DVS_FORMAT_RGBX888 | DVS_RGB_ORDER_XBGR;
+		break;
+	case DRM_FORMAT_XRGB8888:
+		dvscntr |= DVS_FORMAT_RGBX888;
+		break;
+	case DRM_FORMAT_XBGR2101010:
+		dvscntr |= DVS_FORMAT_RGBX101010 | DVS_RGB_ORDER_XBGR;
+		break;
+	case DRM_FORMAT_XRGB2101010:
+		dvscntr |= DVS_FORMAT_RGBX101010;
+		break;
+	case DRM_FORMAT_XBGR16161616F:
+		dvscntr |= DVS_FORMAT_RGBX161616 | DVS_RGB_ORDER_XBGR;
+		break;
+	case DRM_FORMAT_XRGB16161616F:
+		dvscntr |= DVS_FORMAT_RGBX161616;
+		break;
+	case DRM_FORMAT_YUYV:
+		dvscntr |= DVS_FORMAT_YUV422 | DVS_YUV_ORDER_YUYV;
+		break;
+	case DRM_FORMAT_YVYU:
+		dvscntr |= DVS_FORMAT_YUV422 | DVS_YUV_ORDER_YVYU;
+		break;
+	case DRM_FORMAT_UYVY:
+		dvscntr |= DVS_FORMAT_YUV422 | DVS_YUV_ORDER_UYVY;
+		break;
+	case DRM_FORMAT_VYUY:
+		dvscntr |= DVS_FORMAT_YUV422 | DVS_YUV_ORDER_VYUY;
+		break;
+	default:
+		MISSING_CASE(fb->format->format);
+		return 0;
+	}
+
+	if (plane_state->hw.color_encoding == DRM_COLOR_YCBCR_BT709)
+		dvscntr |= DVS_YUV_FORMAT_BT709;
+
+	if (plane_state->hw.color_range == DRM_COLOR_YCBCR_FULL_RANGE)
+		dvscntr |= DVS_YUV_RANGE_CORRECTION_DISABLE;
+
+	if (fb->modifier == I915_FORMAT_MOD_X_TILED)
+		dvscntr |= DVS_TILED;
+
+	if (rotation & DRM_MODE_ROTATE_180)
+		dvscntr |= DVS_ROTATE_180;
+
+	if (key->flags & I915_SET_COLORKEY_DESTINATION)
+		dvscntr |= DVS_DEST_KEY;
+	else if (key->flags & I915_SET_COLORKEY_SOURCE)
+		dvscntr |= DVS_SOURCE_KEY;
+
+	return dvscntr;
+}
+
+static void g4x_sprite_update_gamma(const struct intel_plane_state *plane_state)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	enum pipe pipe = plane->pipe;
+	u16 gamma[8];
+	int i;
+
+	/* Seems RGB data bypasses the gamma always */
+	if (!fb->format->is_yuv)
+		return;
+
+	i9xx_plane_linear_gamma(gamma);
+
+	/* FIXME these register are single buffered :( */
+	/* The two end points are implicit (0.0 and 1.0) */
+	for (i = 1; i < 8 - 1; i++)
+		intel_de_write_fw(dev_priv, DVSGAMC_G4X(pipe, i - 1),
+				  gamma[i] << 16 | gamma[i] << 8 | gamma[i]);
+}
+
+static void ilk_sprite_linear_gamma(u16 gamma[17])
+{
+	int i;
+
+	for (i = 0; i < 17; i++)
+		gamma[i] = (i << 10) / 16;
+}
+
+static void ilk_sprite_update_gamma(const struct intel_plane_state *plane_state)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	enum pipe pipe = plane->pipe;
+	u16 gamma[17];
+	int i;
+
+	/* Seems RGB data bypasses the gamma always */
+	if (!fb->format->is_yuv)
+		return;
+
+	ilk_sprite_linear_gamma(gamma);
+
+	/* FIXME these register are single buffered :( */
+	for (i = 0; i < 16; i++)
+		intel_de_write_fw(dev_priv, DVSGAMC_ILK(pipe, i),
+				  gamma[i] << 20 | gamma[i] << 10 | gamma[i]);
+
+	intel_de_write_fw(dev_priv, DVSGAMCMAX_ILK(pipe, 0), gamma[i]);
+	intel_de_write_fw(dev_priv, DVSGAMCMAX_ILK(pipe, 1), gamma[i]);
+	intel_de_write_fw(dev_priv, DVSGAMCMAX_ILK(pipe, 2), gamma[i]);
+	i++;
+}
+
+static void
+g4x_sprite_update_noarm(struct intel_plane *plane,
+			const struct intel_crtc_state *crtc_state,
+			const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum pipe pipe = plane->pipe;
+	int crtc_x = plane_state->uapi.dst.x1;
+	int crtc_y = plane_state->uapi.dst.y1;
+	u32 crtc_w = drm_rect_width(&plane_state->uapi.dst);
+	u32 crtc_h = drm_rect_height(&plane_state->uapi.dst);
+	u32 src_w = drm_rect_width(&plane_state->uapi.src) >> 16;
+	u32 src_h = drm_rect_height(&plane_state->uapi.src) >> 16;
+	u32 dvsscale = 0;
+
+	if (crtc_w != src_w || crtc_h != src_h)
+		dvsscale = DVS_SCALE_ENABLE |
+			DVS_SRC_WIDTH(src_w - 1) |
+			DVS_SRC_HEIGHT(src_h - 1);
+
+	intel_de_write_fw(dev_priv, DVSSTRIDE(pipe),
+			  plane_state->view.color_plane[0].mapping_stride);
+	intel_de_write_fw(dev_priv, DVSPOS(pipe),
+			  DVS_POS_Y(crtc_y) | DVS_POS_X(crtc_x));
+	intel_de_write_fw(dev_priv, DVSSIZE(pipe),
+			  DVS_HEIGHT(crtc_h - 1) | DVS_WIDTH(crtc_w - 1));
+	intel_de_write_fw(dev_priv, DVSSCALE(pipe), dvsscale);
+}
+
+static void
+g4x_sprite_update_arm(struct intel_plane *plane,
+		      const struct intel_crtc_state *crtc_state,
+		      const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum pipe pipe = plane->pipe;
+	const struct drm_intel_sprite_colorkey *key = &plane_state->ckey;
+	u32 dvssurf_offset = plane_state->view.color_plane[0].offset;
+	u32 x = plane_state->view.color_plane[0].x;
+	u32 y = plane_state->view.color_plane[0].y;
+	u32 dvscntr, linear_offset;
+
+	dvscntr = plane_state->ctl | g4x_sprite_ctl_crtc(crtc_state);
+
+	linear_offset = intel_fb_xy_to_linear(x, y, plane_state, 0);
+
+	if (key->flags) {
+		intel_de_write_fw(dev_priv, DVSKEYVAL(pipe), key->min_value);
+		intel_de_write_fw(dev_priv, DVSKEYMSK(pipe),
+				  key->channel_mask);
+		intel_de_write_fw(dev_priv, DVSKEYMAX(pipe), key->max_value);
+	}
+
+	intel_de_write_fw(dev_priv, DVSLINOFF(pipe), linear_offset);
+	intel_de_write_fw(dev_priv, DVSTILEOFF(pipe), (y << 16) | x);
+
+	/*
+	 * The control register self-arms if the plane was previously
+	 * disabled. Try to make the plane enable atomic by writing
+	 * the control register just before the surface register.
+	 */
+	intel_de_write_fw(dev_priv, DVSCNTR(pipe), dvscntr);
+	intel_de_write_fw(dev_priv, DVSSURF(pipe),
+			  intel_plane_ggtt_offset(plane_state) + dvssurf_offset);
+
+	if (IS_G4X(dev_priv))
+		g4x_sprite_update_gamma(plane_state);
+	else
+		ilk_sprite_update_gamma(plane_state);
+}
+
+static void
+g4x_sprite_disable_arm(struct intel_plane *plane,
+		       const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum pipe pipe = plane->pipe;
+
+	intel_de_write_fw(dev_priv, DVSCNTR(pipe), 0);
+	/* Disable the scaler */
+	intel_de_write_fw(dev_priv, DVSSCALE(pipe), 0);
+	intel_de_write_fw(dev_priv, DVSSURF(pipe), 0);
+}
+
+static bool
+g4x_sprite_get_hw_state(struct intel_plane *plane,
+			enum pipe *pipe)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum intel_display_power_domain power_domain;
+	intel_wakeref_t wakeref;
+	bool ret;
+
+	power_domain = POWER_DOMAIN_PIPE(plane->pipe);
+	wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
+	if (!wakeref)
+		return false;
+
+	ret = intel_de_read(dev_priv, DVSCNTR(plane->pipe)) & DVS_ENABLE;
+
+	*pipe = plane->pipe;
+
+	intel_display_power_put(dev_priv, power_domain, wakeref);
+
+	return ret;
+}
+
+static bool g4x_fb_scalable(const struct drm_framebuffer *fb)
+{
+	if (!fb)
+		return false;
+
+	switch (fb->format->format) {
+	case DRM_FORMAT_C8:
+	case DRM_FORMAT_XRGB16161616F:
+	case DRM_FORMAT_ARGB16161616F:
+	case DRM_FORMAT_XBGR16161616F:
+	case DRM_FORMAT_ABGR16161616F:
+		return false;
+	default:
+		return true;
+	}
+}
+
+static int
+g4x_sprite_check_scaling(struct intel_crtc_state *crtc_state,
+			 struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *i915 = to_i915(plane_state->uapi.plane->dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	const struct drm_rect *src = &plane_state->uapi.src;
+	const struct drm_rect *dst = &plane_state->uapi.dst;
+	int src_x, src_w, src_h, crtc_w, crtc_h;
+	const struct drm_display_mode *adjusted_mode =
+		&crtc_state->hw.adjusted_mode;
+	unsigned int stride = plane_state->view.color_plane[0].mapping_stride;
+	unsigned int cpp = fb->format->cpp[0];
+	unsigned int width_bytes;
+	int min_width, min_height;
+
+	crtc_w = drm_rect_width(dst);
+	crtc_h = drm_rect_height(dst);
+
+	src_x = src->x1 >> 16;
+	src_w = drm_rect_width(src) >> 16;
+	src_h = drm_rect_height(src) >> 16;
+
+	if (src_w == crtc_w && src_h == crtc_h)
+		return 0;
+
+	min_width = 3;
+
+	if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
+		if (src_h & 1) {
+			drm_dbg_kms(&i915->drm, "Source height must be even with interlaced modes\n");
+			return -EINVAL;
+		}
+		min_height = 6;
+	} else {
+		min_height = 3;
+	}
+
+	width_bytes = ((src_x * cpp) & 63) + src_w * cpp;
+
+	if (src_w < min_width || src_h < min_height ||
+	    src_w > 2048 || src_h > 2048) {
+		drm_dbg_kms(&i915->drm, "Source dimensions (%dx%d) exceed hardware limits (%dx%d - %dx%d)\n",
+			    src_w, src_h, min_width, min_height, 2048, 2048);
+		return -EINVAL;
+	}
+
+	if (width_bytes > 4096) {
+		drm_dbg_kms(&i915->drm, "Fetch width (%d) exceeds hardware max with scaling (%u)\n",
+			    width_bytes, 4096);
+		return -EINVAL;
+	}
+
+	if (stride > 4096) {
+		drm_dbg_kms(&i915->drm, "Stride (%u) exceeds hardware max with scaling (%u)\n",
+			    stride, 4096);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int
+g4x_sprite_check(struct intel_crtc_state *crtc_state,
+		 struct intel_plane_state *plane_state)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	int min_scale = DRM_PLANE_NO_SCALING;
+	int max_scale = DRM_PLANE_NO_SCALING;
+	int ret;
+
+	if (g4x_fb_scalable(plane_state->hw.fb)) {
+		if (DISPLAY_VER(dev_priv) < 7) {
+			min_scale = 1;
+			max_scale = 16 << 16;
+		} else if (IS_IVYBRIDGE(dev_priv)) {
+			min_scale = 1;
+			max_scale = 2 << 16;
+		}
+	}
+
+	ret = intel_atomic_plane_check_clipping(plane_state, crtc_state,
+						min_scale, max_scale, true);
+	if (ret)
+		return ret;
+
+	ret = i9xx_check_plane_surface(plane_state);
+	if (ret)
+		return ret;
+
+	if (!plane_state->uapi.visible)
+		return 0;
+
+	ret = intel_plane_check_src_coordinates(plane_state);
+	if (ret)
+		return ret;
+
+	ret = g4x_sprite_check_scaling(crtc_state, plane_state);
+	if (ret)
+		return ret;
+
+	if (DISPLAY_VER(dev_priv) >= 7)
+		plane_state->ctl = ivb_sprite_ctl(crtc_state, plane_state);
+	else
+		plane_state->ctl = g4x_sprite_ctl(crtc_state, plane_state);
+
+	return 0;
+}
+
+int chv_plane_check_rotation(const struct intel_plane_state *plane_state)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	unsigned int rotation = plane_state->hw.rotation;
+
+	/* CHV ignores the mirror bit when the rotate bit is set :( */
+	if (IS_CHERRYVIEW(dev_priv) &&
+	    rotation & DRM_MODE_ROTATE_180 &&
+	    rotation & DRM_MODE_REFLECT_X) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Cannot rotate and reflect at the same time\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int
+vlv_sprite_check(struct intel_crtc_state *crtc_state,
+		 struct intel_plane_state *plane_state)
+{
+	int ret;
+
+	ret = chv_plane_check_rotation(plane_state);
+	if (ret)
+		return ret;
+
+	ret = intel_atomic_plane_check_clipping(plane_state, crtc_state,
+						DRM_PLANE_NO_SCALING,
+						DRM_PLANE_NO_SCALING,
+						true);
+	if (ret)
+		return ret;
+
+	ret = i9xx_check_plane_surface(plane_state);
+	if (ret)
+		return ret;
+
+	if (!plane_state->uapi.visible)
+		return 0;
+
+	ret = intel_plane_check_src_coordinates(plane_state);
+	if (ret)
+		return ret;
+
+	plane_state->ctl = vlv_sprite_ctl(crtc_state, plane_state);
+
+	return 0;
+}
+
+static bool has_dst_key_in_primary_plane(struct drm_i915_private *dev_priv)
+{
+	return DISPLAY_VER(dev_priv) >= 9;
+}
+
+static void intel_plane_set_ckey(struct intel_plane_state *plane_state,
+				 const struct drm_intel_sprite_colorkey *set)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	struct drm_intel_sprite_colorkey *key = &plane_state->ckey;
+
+	*key = *set;
+
+	/*
+	 * We want src key enabled on the
+	 * sprite and not on the primary.
+	 */
+	if (plane->id == PLANE_PRIMARY &&
+	    set->flags & I915_SET_COLORKEY_SOURCE)
+		key->flags = 0;
+
+	/*
+	 * On SKL+ we want dst key enabled on
+	 * the primary and not on the sprite.
+	 */
+	if (DISPLAY_VER(dev_priv) >= 9 && plane->id != PLANE_PRIMARY &&
+	    set->flags & I915_SET_COLORKEY_DESTINATION)
+		key->flags = 0;
+}
+
+int intel_sprite_set_colorkey_ioctl(struct drm_device *dev, void *data,
+				    struct drm_file *file_priv)
+{
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct drm_intel_sprite_colorkey *set = data;
+	struct drm_plane *plane;
+	struct drm_plane_state *plane_state;
+	struct drm_atomic_state *state;
+	struct drm_modeset_acquire_ctx ctx;
+	int ret = 0;
+
+	/* ignore the pointless "none" flag */
+	set->flags &= ~I915_SET_COLORKEY_NONE;
+
+	if (set->flags & ~(I915_SET_COLORKEY_DESTINATION | I915_SET_COLORKEY_SOURCE))
+		return -EINVAL;
+
+	/* Make sure we don't try to enable both src & dest simultaneously */
+	if ((set->flags & (I915_SET_COLORKEY_DESTINATION | I915_SET_COLORKEY_SOURCE)) == (I915_SET_COLORKEY_DESTINATION | I915_SET_COLORKEY_SOURCE))
+		return -EINVAL;
+
+	if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
+	    set->flags & I915_SET_COLORKEY_DESTINATION)
+		return -EINVAL;
+
+	plane = drm_plane_find(dev, file_priv, set->plane_id);
+	if (!plane || plane->type != DRM_PLANE_TYPE_OVERLAY)
+		return -ENOENT;
+
+	/*
+	 * SKL+ only plane 2 can do destination keying against plane 1.
+	 * Also multiple planes can't do destination keying on the same
+	 * pipe simultaneously.
+	 */
+	if (DISPLAY_VER(dev_priv) >= 9 &&
+	    to_intel_plane(plane)->id >= PLANE_SPRITE1 &&
+	    set->flags & I915_SET_COLORKEY_DESTINATION)
+		return -EINVAL;
+
+	drm_modeset_acquire_init(&ctx, 0);
+
+	state = drm_atomic_state_alloc(plane->dev);
+	if (!state) {
+		ret = -ENOMEM;
+		goto out;
+	}
+	state->acquire_ctx = &ctx;
+
+	while (1) {
+		plane_state = drm_atomic_get_plane_state(state, plane);
+		ret = PTR_ERR_OR_ZERO(plane_state);
+		if (!ret)
+			intel_plane_set_ckey(to_intel_plane_state(plane_state), set);
+
+		/*
+		 * On some platforms we have to configure
+		 * the dst colorkey on the primary plane.
+		 */
+		if (!ret && has_dst_key_in_primary_plane(dev_priv)) {
+			struct intel_crtc *crtc =
+				intel_crtc_for_pipe(dev_priv,
+						    to_intel_plane(plane)->pipe);
+
+			plane_state = drm_atomic_get_plane_state(state,
+								 crtc->base.primary);
+			ret = PTR_ERR_OR_ZERO(plane_state);
+			if (!ret)
+				intel_plane_set_ckey(to_intel_plane_state(plane_state), set);
+		}
+
+		if (!ret)
+			ret = drm_atomic_commit(state);
+
+		if (ret != -EDEADLK)
+			break;
+
+		drm_atomic_state_clear(state);
+		drm_modeset_backoff(&ctx);
+	}
+
+	drm_atomic_state_put(state);
+out:
+	drm_modeset_drop_locks(&ctx);
+	drm_modeset_acquire_fini(&ctx);
+	return ret;
+}
+
+static const u32 g4x_sprite_formats[] = {
+	DRM_FORMAT_XRGB8888,
+	DRM_FORMAT_YUYV,
+	DRM_FORMAT_YVYU,
+	DRM_FORMAT_UYVY,
+	DRM_FORMAT_VYUY,
+};
+
+static const u32 snb_sprite_formats[] = {
+	DRM_FORMAT_XRGB8888,
+	DRM_FORMAT_XBGR8888,
+	DRM_FORMAT_XRGB2101010,
+	DRM_FORMAT_XBGR2101010,
+	DRM_FORMAT_XRGB16161616F,
+	DRM_FORMAT_XBGR16161616F,
+	DRM_FORMAT_YUYV,
+	DRM_FORMAT_YVYU,
+	DRM_FORMAT_UYVY,
+	DRM_FORMAT_VYUY,
+};
+
+static const u32 vlv_sprite_formats[] = {
+	DRM_FORMAT_C8,
+	DRM_FORMAT_RGB565,
+	DRM_FORMAT_XRGB8888,
+	DRM_FORMAT_XBGR8888,
+	DRM_FORMAT_ARGB8888,
+	DRM_FORMAT_ABGR8888,
+	DRM_FORMAT_XBGR2101010,
+	DRM_FORMAT_ABGR2101010,
+	DRM_FORMAT_YUYV,
+	DRM_FORMAT_YVYU,
+	DRM_FORMAT_UYVY,
+	DRM_FORMAT_VYUY,
+};
+
+static const u32 chv_pipe_b_sprite_formats[] = {
+	DRM_FORMAT_C8,
+	DRM_FORMAT_RGB565,
+	DRM_FORMAT_XRGB8888,
+	DRM_FORMAT_XBGR8888,
+	DRM_FORMAT_ARGB8888,
+	DRM_FORMAT_ABGR8888,
+	DRM_FORMAT_XRGB2101010,
+	DRM_FORMAT_XBGR2101010,
+	DRM_FORMAT_ARGB2101010,
+	DRM_FORMAT_ABGR2101010,
+	DRM_FORMAT_YUYV,
+	DRM_FORMAT_YVYU,
+	DRM_FORMAT_UYVY,
+	DRM_FORMAT_VYUY,
+};
+
+static bool g4x_sprite_format_mod_supported(struct drm_plane *_plane,
+					    u32 format, u64 modifier)
+{
+	if (!intel_fb_plane_supports_modifier(to_intel_plane(_plane), modifier))
+		return false;
+
+	switch (format) {
+	case DRM_FORMAT_XRGB8888:
+	case DRM_FORMAT_YUYV:
+	case DRM_FORMAT_YVYU:
+	case DRM_FORMAT_UYVY:
+	case DRM_FORMAT_VYUY:
+		if (modifier == DRM_FORMAT_MOD_LINEAR ||
+		    modifier == I915_FORMAT_MOD_X_TILED)
+			return true;
+		fallthrough;
+	default:
+		return false;
+	}
+}
+
+static bool snb_sprite_format_mod_supported(struct drm_plane *_plane,
+					    u32 format, u64 modifier)
+{
+	if (!intel_fb_plane_supports_modifier(to_intel_plane(_plane), modifier))
+		return false;
+
+	switch (format) {
+	case DRM_FORMAT_XRGB8888:
+	case DRM_FORMAT_XBGR8888:
+	case DRM_FORMAT_XRGB2101010:
+	case DRM_FORMAT_XBGR2101010:
+	case DRM_FORMAT_XRGB16161616F:
+	case DRM_FORMAT_XBGR16161616F:
+	case DRM_FORMAT_YUYV:
+	case DRM_FORMAT_YVYU:
+	case DRM_FORMAT_UYVY:
+	case DRM_FORMAT_VYUY:
+		if (modifier == DRM_FORMAT_MOD_LINEAR ||
+		    modifier == I915_FORMAT_MOD_X_TILED)
+			return true;
+		fallthrough;
+	default:
+		return false;
+	}
+}
+
+static bool vlv_sprite_format_mod_supported(struct drm_plane *_plane,
+					    u32 format, u64 modifier)
+{
+	if (!intel_fb_plane_supports_modifier(to_intel_plane(_plane), modifier))
+		return false;
+
+	switch (format) {
+	case DRM_FORMAT_C8:
+	case DRM_FORMAT_RGB565:
+	case DRM_FORMAT_ABGR8888:
+	case DRM_FORMAT_ARGB8888:
+	case DRM_FORMAT_XBGR8888:
+	case DRM_FORMAT_XRGB8888:
+	case DRM_FORMAT_XBGR2101010:
+	case DRM_FORMAT_ABGR2101010:
+	case DRM_FORMAT_XRGB2101010:
+	case DRM_FORMAT_ARGB2101010:
+	case DRM_FORMAT_YUYV:
+	case DRM_FORMAT_YVYU:
+	case DRM_FORMAT_UYVY:
+	case DRM_FORMAT_VYUY:
+		if (modifier == DRM_FORMAT_MOD_LINEAR ||
+		    modifier == I915_FORMAT_MOD_X_TILED)
+			return true;
+		fallthrough;
+	default:
+		return false;
+	}
+}
+
+static const struct drm_plane_funcs g4x_sprite_funcs = {
+	.update_plane = drm_atomic_helper_update_plane,
+	.disable_plane = drm_atomic_helper_disable_plane,
+	.destroy = intel_plane_destroy,
+	.atomic_duplicate_state = intel_plane_duplicate_state,
+	.atomic_destroy_state = intel_plane_destroy_state,
+	.format_mod_supported = g4x_sprite_format_mod_supported,
+};
+
+static const struct drm_plane_funcs snb_sprite_funcs = {
+	.update_plane = drm_atomic_helper_update_plane,
+	.disable_plane = drm_atomic_helper_disable_plane,
+	.destroy = intel_plane_destroy,
+	.atomic_duplicate_state = intel_plane_duplicate_state,
+	.atomic_destroy_state = intel_plane_destroy_state,
+	.format_mod_supported = snb_sprite_format_mod_supported,
+};
+
+static const struct drm_plane_funcs vlv_sprite_funcs = {
+	.update_plane = drm_atomic_helper_update_plane,
+	.disable_plane = drm_atomic_helper_disable_plane,
+	.destroy = intel_plane_destroy,
+	.atomic_duplicate_state = intel_plane_duplicate_state,
+	.atomic_destroy_state = intel_plane_destroy_state,
+	.format_mod_supported = vlv_sprite_format_mod_supported,
+};
+
+struct intel_plane *
+intel_sprite_plane_create(struct drm_i915_private *dev_priv,
+			  enum pipe pipe, int sprite)
+{
+	struct intel_plane *plane;
+	const struct drm_plane_funcs *plane_funcs;
+	unsigned int supported_rotations;
+	const u64 *modifiers;
+	const u32 *formats;
+	int num_formats;
+	int ret, zpos;
+
+	plane = intel_plane_alloc();
+	if (IS_ERR(plane))
+		return plane;
+
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+		plane->update_noarm = vlv_sprite_update_noarm;
+		plane->update_arm = vlv_sprite_update_arm;
+		plane->disable_arm = vlv_sprite_disable_arm;
+		plane->get_hw_state = vlv_sprite_get_hw_state;
+		plane->check_plane = vlv_sprite_check;
+		plane->max_stride = i965_plane_max_stride;
+		plane->min_cdclk = vlv_plane_min_cdclk;
+
+		if (IS_CHERRYVIEW(dev_priv) && pipe == PIPE_B) {
+			formats = chv_pipe_b_sprite_formats;
+			num_formats = ARRAY_SIZE(chv_pipe_b_sprite_formats);
+		} else {
+			formats = vlv_sprite_formats;
+			num_formats = ARRAY_SIZE(vlv_sprite_formats);
+		}
+
+		plane_funcs = &vlv_sprite_funcs;
+	} else if (DISPLAY_VER(dev_priv) >= 7) {
+		plane->update_noarm = ivb_sprite_update_noarm;
+		plane->update_arm = ivb_sprite_update_arm;
+		plane->disable_arm = ivb_sprite_disable_arm;
+		plane->get_hw_state = ivb_sprite_get_hw_state;
+		plane->check_plane = g4x_sprite_check;
+
+		if (IS_BROADWELL(dev_priv) || IS_HASWELL(dev_priv)) {
+			plane->max_stride = hsw_sprite_max_stride;
+			plane->min_cdclk = hsw_plane_min_cdclk;
+		} else {
+			plane->max_stride = g4x_sprite_max_stride;
+			plane->min_cdclk = ivb_sprite_min_cdclk;
+		}
+
+		formats = snb_sprite_formats;
+		num_formats = ARRAY_SIZE(snb_sprite_formats);
+
+		plane_funcs = &snb_sprite_funcs;
+	} else {
+		plane->update_noarm = g4x_sprite_update_noarm;
+		plane->update_arm = g4x_sprite_update_arm;
+		plane->disable_arm = g4x_sprite_disable_arm;
+		plane->get_hw_state = g4x_sprite_get_hw_state;
+		plane->check_plane = g4x_sprite_check;
+		plane->max_stride = g4x_sprite_max_stride;
+		plane->min_cdclk = g4x_sprite_min_cdclk;
+
+		if (IS_SANDYBRIDGE(dev_priv)) {
+			formats = snb_sprite_formats;
+			num_formats = ARRAY_SIZE(snb_sprite_formats);
+
+			plane_funcs = &snb_sprite_funcs;
+		} else {
+			formats = g4x_sprite_formats;
+			num_formats = ARRAY_SIZE(g4x_sprite_formats);
+
+			plane_funcs = &g4x_sprite_funcs;
+		}
+	}
+
+	if (IS_CHERRYVIEW(dev_priv) && pipe == PIPE_B) {
+		supported_rotations =
+			DRM_MODE_ROTATE_0 | DRM_MODE_ROTATE_180 |
+			DRM_MODE_REFLECT_X;
+	} else {
+		supported_rotations =
+			DRM_MODE_ROTATE_0 | DRM_MODE_ROTATE_180;
+	}
+
+	plane->pipe = pipe;
+	plane->id = PLANE_SPRITE0 + sprite;
+	plane->frontbuffer_bit = INTEL_FRONTBUFFER(pipe, plane->id);
+
+	modifiers = intel_fb_plane_get_modifiers(dev_priv, INTEL_PLANE_CAP_TILING_X);
+
+	ret = drm_universal_plane_init(&dev_priv->drm, &plane->base,
+				       0, plane_funcs,
+				       formats, num_formats, modifiers,
+				       DRM_PLANE_TYPE_OVERLAY,
+				       "sprite %c", sprite_name(pipe, sprite));
+	kfree(modifiers);
+
+	if (ret)
+		goto fail;
+
+	drm_plane_create_rotation_property(&plane->base,
+					   DRM_MODE_ROTATE_0,
+					   supported_rotations);
+
+	drm_plane_create_color_properties(&plane->base,
+					  BIT(DRM_COLOR_YCBCR_BT601) |
+					  BIT(DRM_COLOR_YCBCR_BT709),
+					  BIT(DRM_COLOR_YCBCR_LIMITED_RANGE) |
+					  BIT(DRM_COLOR_YCBCR_FULL_RANGE),
+					  DRM_COLOR_YCBCR_BT709,
+					  DRM_COLOR_YCBCR_LIMITED_RANGE);
+
+	zpos = sprite + 1;
+	drm_plane_create_zpos_immutable_property(&plane->base, zpos);
+
+	intel_plane_helper_add(plane);
+
+	return plane;
+
+fail:
+	intel_plane_free(plane);
+
+	return ERR_PTR(ret);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_sprite.h b/drivers/gpu/drm/i915/display/intel_sprite.h
new file mode 100644
index 000000000..4f63e4967
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_sprite.h
@@ -0,0 +1,50 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_SPRITE_H__
+#define __INTEL_SPRITE_H__
+
+#include <linux/types.h>
+
+#include "intel_display.h"
+
+struct drm_device;
+struct drm_display_mode;
+struct drm_file;
+struct drm_i915_private;
+struct intel_crtc_state;
+struct intel_plane_state;
+
+/*
+ * FIXME: We should instead only take spinlocks once for the entire update
+ * instead of once per mmio.
+ */
+#if IS_ENABLED(CONFIG_PROVE_LOCKING)
+#define VBLANK_EVASION_TIME_US 250
+#else
+#define VBLANK_EVASION_TIME_US 100
+#endif
+
+struct intel_plane *intel_sprite_plane_create(struct drm_i915_private *dev_priv,
+					      enum pipe pipe, int plane);
+int intel_sprite_set_colorkey_ioctl(struct drm_device *dev, void *data,
+				    struct drm_file *file_priv);
+int intel_plane_check_src_coordinates(struct intel_plane_state *plane_state);
+int chv_plane_check_rotation(const struct intel_plane_state *plane_state);
+
+static inline u8 icl_hdr_plane_mask(void)
+{
+	return BIT(PLANE_PRIMARY) |
+		BIT(PLANE_SPRITE0) | BIT(PLANE_SPRITE1);
+}
+
+int ivb_plane_min_cdclk(const struct intel_crtc_state *crtc_state,
+			const struct intel_plane_state *plane_state);
+int hsw_plane_min_cdclk(const struct intel_crtc_state *crtc_state,
+			const struct intel_plane_state *plane_state);
+int vlv_plane_min_cdclk(const struct intel_crtc_state *crtc_state,
+			const struct intel_plane_state *plane_state);
+
+#endif /* __INTEL_SPRITE_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_tc.c b/drivers/gpu/drm/i915/display/intel_tc.c
new file mode 100644
index 000000000..bda77828d
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_tc.c
@@ -0,0 +1,1007 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#include "i915_drv.h"
+#include "i915_reg.h"
+#include "intel_de.h"
+#include "intel_display.h"
+#include "intel_display_power_map.h"
+#include "intel_display_types.h"
+#include "intel_dp_mst.h"
+#include "intel_tc.h"
+#include "intel_tc_phy_regs.h"
+
+static const char *tc_port_mode_name(enum tc_port_mode mode)
+{
+	static const char * const names[] = {
+		[TC_PORT_DISCONNECTED] = "disconnected",
+		[TC_PORT_TBT_ALT] = "tbt-alt",
+		[TC_PORT_DP_ALT] = "dp-alt",
+		[TC_PORT_LEGACY] = "legacy",
+	};
+
+	if (WARN_ON(mode >= ARRAY_SIZE(names)))
+		mode = TC_PORT_DISCONNECTED;
+
+	return names[mode];
+}
+
+static bool intel_tc_port_in_mode(struct intel_digital_port *dig_port,
+				  enum tc_port_mode mode)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	enum phy phy = intel_port_to_phy(i915, dig_port->base.port);
+
+	return intel_phy_is_tc(i915, phy) && dig_port->tc_mode == mode;
+}
+
+bool intel_tc_port_in_tbt_alt_mode(struct intel_digital_port *dig_port)
+{
+	return intel_tc_port_in_mode(dig_port, TC_PORT_TBT_ALT);
+}
+
+bool intel_tc_port_in_dp_alt_mode(struct intel_digital_port *dig_port)
+{
+	return intel_tc_port_in_mode(dig_port, TC_PORT_DP_ALT);
+}
+
+bool intel_tc_port_in_legacy_mode(struct intel_digital_port *dig_port)
+{
+	return intel_tc_port_in_mode(dig_port, TC_PORT_LEGACY);
+}
+
+bool intel_tc_cold_requires_aux_pw(struct intel_digital_port *dig_port)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+
+	return (DISPLAY_VER(i915) == 11 && dig_port->tc_legacy_port) ||
+		IS_ALDERLAKE_P(i915);
+}
+
+static enum intel_display_power_domain
+tc_cold_get_power_domain(struct intel_digital_port *dig_port, enum tc_port_mode mode)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+
+	if (mode == TC_PORT_TBT_ALT || !intel_tc_cold_requires_aux_pw(dig_port))
+		return POWER_DOMAIN_TC_COLD_OFF;
+
+	return intel_display_power_legacy_aux_domain(i915, dig_port->aux_ch);
+}
+
+static intel_wakeref_t
+tc_cold_block_in_mode(struct intel_digital_port *dig_port, enum tc_port_mode mode,
+		      enum intel_display_power_domain *domain)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+
+	*domain = tc_cold_get_power_domain(dig_port, mode);
+
+	return intel_display_power_get(i915, *domain);
+}
+
+static intel_wakeref_t
+tc_cold_block(struct intel_digital_port *dig_port, enum intel_display_power_domain *domain)
+{
+	return tc_cold_block_in_mode(dig_port, dig_port->tc_mode, domain);
+}
+
+static void
+tc_cold_unblock(struct intel_digital_port *dig_port, enum intel_display_power_domain domain,
+		intel_wakeref_t wakeref)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+
+	/*
+	 * wakeref == -1, means some error happened saving save_depot_stack but
+	 * power should still be put down and 0 is a invalid save_depot_stack
+	 * id so can be used to skip it for non TC legacy ports.
+	 */
+	if (wakeref == 0)
+		return;
+
+	intel_display_power_put(i915, domain, wakeref);
+}
+
+static void
+assert_tc_cold_blocked(struct intel_digital_port *dig_port)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	bool enabled;
+
+	enabled = intel_display_power_is_enabled(i915,
+						 tc_cold_get_power_domain(dig_port,
+									  dig_port->tc_mode));
+	drm_WARN_ON(&i915->drm, !enabled);
+}
+
+static enum intel_display_power_domain
+tc_port_power_domain(struct intel_digital_port *dig_port)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	enum tc_port tc_port = intel_port_to_tc(i915, dig_port->base.port);
+
+	return POWER_DOMAIN_PORT_DDI_LANES_TC1 + tc_port - TC_PORT_1;
+}
+
+static void
+assert_tc_port_power_enabled(struct intel_digital_port *dig_port)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+
+	drm_WARN_ON(&i915->drm,
+		    !intel_display_power_is_enabled(i915, tc_port_power_domain(dig_port)));
+}
+
+u32 intel_tc_port_get_lane_mask(struct intel_digital_port *dig_port)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	struct intel_uncore *uncore = &i915->uncore;
+	u32 lane_mask;
+
+	lane_mask = intel_uncore_read(uncore,
+				      PORT_TX_DFLEXDPSP(dig_port->tc_phy_fia));
+
+	drm_WARN_ON(&i915->drm, lane_mask == 0xffffffff);
+	assert_tc_cold_blocked(dig_port);
+
+	lane_mask &= DP_LANE_ASSIGNMENT_MASK(dig_port->tc_phy_fia_idx);
+	return lane_mask >> DP_LANE_ASSIGNMENT_SHIFT(dig_port->tc_phy_fia_idx);
+}
+
+u32 intel_tc_port_get_pin_assignment_mask(struct intel_digital_port *dig_port)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	struct intel_uncore *uncore = &i915->uncore;
+	u32 pin_mask;
+
+	pin_mask = intel_uncore_read(uncore,
+				     PORT_TX_DFLEXPA1(dig_port->tc_phy_fia));
+
+	drm_WARN_ON(&i915->drm, pin_mask == 0xffffffff);
+	assert_tc_cold_blocked(dig_port);
+
+	return (pin_mask & DP_PIN_ASSIGNMENT_MASK(dig_port->tc_phy_fia_idx)) >>
+	       DP_PIN_ASSIGNMENT_SHIFT(dig_port->tc_phy_fia_idx);
+}
+
+int intel_tc_port_fia_max_lane_count(struct intel_digital_port *dig_port)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	intel_wakeref_t wakeref;
+	u32 lane_mask;
+
+	if (dig_port->tc_mode != TC_PORT_DP_ALT)
+		return 4;
+
+	assert_tc_cold_blocked(dig_port);
+
+	lane_mask = 0;
+	with_intel_display_power(i915, POWER_DOMAIN_DISPLAY_CORE, wakeref)
+		lane_mask = intel_tc_port_get_lane_mask(dig_port);
+
+	switch (lane_mask) {
+	default:
+		MISSING_CASE(lane_mask);
+		fallthrough;
+	case 0x1:
+	case 0x2:
+	case 0x4:
+	case 0x8:
+		return 1;
+	case 0x3:
+	case 0xc:
+		return 2;
+	case 0xf:
+		return 4;
+	}
+}
+
+void intel_tc_port_set_fia_lane_count(struct intel_digital_port *dig_port,
+				      int required_lanes)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	bool lane_reversal = dig_port->saved_port_bits & DDI_BUF_PORT_REVERSAL;
+	struct intel_uncore *uncore = &i915->uncore;
+	u32 val;
+
+	drm_WARN_ON(&i915->drm,
+		    lane_reversal && dig_port->tc_mode != TC_PORT_LEGACY);
+
+	assert_tc_cold_blocked(dig_port);
+
+	val = intel_uncore_read(uncore,
+				PORT_TX_DFLEXDPMLE1(dig_port->tc_phy_fia));
+	val &= ~DFLEXDPMLE1_DPMLETC_MASK(dig_port->tc_phy_fia_idx);
+
+	switch (required_lanes) {
+	case 1:
+		val |= lane_reversal ?
+			DFLEXDPMLE1_DPMLETC_ML3(dig_port->tc_phy_fia_idx) :
+			DFLEXDPMLE1_DPMLETC_ML0(dig_port->tc_phy_fia_idx);
+		break;
+	case 2:
+		val |= lane_reversal ?
+			DFLEXDPMLE1_DPMLETC_ML3_2(dig_port->tc_phy_fia_idx) :
+			DFLEXDPMLE1_DPMLETC_ML1_0(dig_port->tc_phy_fia_idx);
+		break;
+	case 4:
+		val |= DFLEXDPMLE1_DPMLETC_ML3_0(dig_port->tc_phy_fia_idx);
+		break;
+	default:
+		MISSING_CASE(required_lanes);
+	}
+
+	intel_uncore_write(uncore,
+			   PORT_TX_DFLEXDPMLE1(dig_port->tc_phy_fia), val);
+}
+
+static void tc_port_fixup_legacy_flag(struct intel_digital_port *dig_port,
+				      u32 live_status_mask)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	u32 valid_hpd_mask;
+
+	if (dig_port->tc_legacy_port)
+		valid_hpd_mask = BIT(TC_PORT_LEGACY);
+	else
+		valid_hpd_mask = BIT(TC_PORT_DP_ALT) |
+				 BIT(TC_PORT_TBT_ALT);
+
+	if (!(live_status_mask & ~valid_hpd_mask))
+		return;
+
+	/* If live status mismatches the VBT flag, trust the live status. */
+	drm_dbg_kms(&i915->drm,
+		    "Port %s: live status %08x mismatches the legacy port flag %08x, fixing flag\n",
+		    dig_port->tc_port_name, live_status_mask, valid_hpd_mask);
+
+	dig_port->tc_legacy_port = !dig_port->tc_legacy_port;
+}
+
+static u32 icl_tc_port_live_status_mask(struct intel_digital_port *dig_port)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	struct intel_uncore *uncore = &i915->uncore;
+	u32 isr_bit = i915->display.hotplug.pch_hpd[dig_port->base.hpd_pin];
+	u32 mask = 0;
+	u32 val;
+
+	val = intel_uncore_read(uncore,
+				PORT_TX_DFLEXDPSP(dig_port->tc_phy_fia));
+
+	if (val == 0xffffffff) {
+		drm_dbg_kms(&i915->drm,
+			    "Port %s: PHY in TCCOLD, nothing connected\n",
+			    dig_port->tc_port_name);
+		return mask;
+	}
+
+	if (val & TC_LIVE_STATE_TBT(dig_port->tc_phy_fia_idx))
+		mask |= BIT(TC_PORT_TBT_ALT);
+	if (val & TC_LIVE_STATE_TC(dig_port->tc_phy_fia_idx))
+		mask |= BIT(TC_PORT_DP_ALT);
+
+	if (intel_uncore_read(uncore, SDEISR) & isr_bit)
+		mask |= BIT(TC_PORT_LEGACY);
+
+	/* The sink can be connected only in a single mode. */
+	if (!drm_WARN_ON_ONCE(&i915->drm, hweight32(mask) > 1))
+		tc_port_fixup_legacy_flag(dig_port, mask);
+
+	return mask;
+}
+
+static u32 adl_tc_port_live_status_mask(struct intel_digital_port *dig_port)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	enum tc_port tc_port = intel_port_to_tc(i915, dig_port->base.port);
+	u32 isr_bit = i915->display.hotplug.pch_hpd[dig_port->base.hpd_pin];
+	struct intel_uncore *uncore = &i915->uncore;
+	u32 val, mask = 0;
+
+	/*
+	 * On ADL-P HW/FW will wake from TCCOLD to complete the read access of
+	 * registers in IOM. Note that this doesn't apply to PHY and FIA
+	 * registers.
+	 */
+	val = intel_uncore_read(uncore, TCSS_DDI_STATUS(tc_port));
+	if (val & TCSS_DDI_STATUS_HPD_LIVE_STATUS_ALT)
+		mask |= BIT(TC_PORT_DP_ALT);
+	if (val & TCSS_DDI_STATUS_HPD_LIVE_STATUS_TBT)
+		mask |= BIT(TC_PORT_TBT_ALT);
+
+	if (intel_uncore_read(uncore, SDEISR) & isr_bit)
+		mask |= BIT(TC_PORT_LEGACY);
+
+	/* The sink can be connected only in a single mode. */
+	if (!drm_WARN_ON(&i915->drm, hweight32(mask) > 1))
+		tc_port_fixup_legacy_flag(dig_port, mask);
+
+	return mask;
+}
+
+static u32 tc_port_live_status_mask(struct intel_digital_port *dig_port)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+
+	if (IS_ALDERLAKE_P(i915))
+		return adl_tc_port_live_status_mask(dig_port);
+
+	return icl_tc_port_live_status_mask(dig_port);
+}
+
+/*
+ * Return the PHY status complete flag indicating that display can acquire the
+ * PHY ownership. The IOM firmware sets this flag when a DP-alt or legacy sink
+ * is connected and it's ready to switch the ownership to display. The flag
+ * will be left cleared when a TBT-alt sink is connected, where the PHY is
+ * owned by the TBT subsystem and so switching the ownership to display is not
+ * required.
+ */
+static bool icl_tc_phy_status_complete(struct intel_digital_port *dig_port)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	struct intel_uncore *uncore = &i915->uncore;
+	u32 val;
+
+	val = intel_uncore_read(uncore,
+				PORT_TX_DFLEXDPPMS(dig_port->tc_phy_fia));
+	if (val == 0xffffffff) {
+		drm_dbg_kms(&i915->drm,
+			    "Port %s: PHY in TCCOLD, assuming not complete\n",
+			    dig_port->tc_port_name);
+		return false;
+	}
+
+	return val & DP_PHY_MODE_STATUS_COMPLETED(dig_port->tc_phy_fia_idx);
+}
+
+/*
+ * Return the PHY status complete flag indicating that display can acquire the
+ * PHY ownership. The IOM firmware sets this flag when it's ready to switch
+ * the ownership to display, regardless of what sink is connected (TBT-alt,
+ * DP-alt, legacy or nothing). For TBT-alt sinks the PHY is owned by the TBT
+ * subsystem and so switching the ownership to display is not required.
+ */
+static bool adl_tc_phy_status_complete(struct intel_digital_port *dig_port)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	enum tc_port tc_port = intel_port_to_tc(i915, dig_port->base.port);
+	struct intel_uncore *uncore = &i915->uncore;
+	u32 val;
+
+	val = intel_uncore_read(uncore, TCSS_DDI_STATUS(tc_port));
+	if (val == 0xffffffff) {
+		drm_dbg_kms(&i915->drm,
+			    "Port %s: PHY in TCCOLD, assuming not complete\n",
+			    dig_port->tc_port_name);
+		return false;
+	}
+
+	return val & TCSS_DDI_STATUS_READY;
+}
+
+static bool tc_phy_status_complete(struct intel_digital_port *dig_port)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+
+	if (IS_ALDERLAKE_P(i915))
+		return adl_tc_phy_status_complete(dig_port);
+
+	return icl_tc_phy_status_complete(dig_port);
+}
+
+static bool icl_tc_phy_take_ownership(struct intel_digital_port *dig_port,
+				      bool take)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	struct intel_uncore *uncore = &i915->uncore;
+	u32 val;
+
+	val = intel_uncore_read(uncore,
+				PORT_TX_DFLEXDPCSSS(dig_port->tc_phy_fia));
+	if (val == 0xffffffff) {
+		drm_dbg_kms(&i915->drm,
+			    "Port %s: PHY in TCCOLD, can't %s ownership\n",
+			    dig_port->tc_port_name, take ? "take" : "release");
+
+		return false;
+	}
+
+	val &= ~DP_PHY_MODE_STATUS_NOT_SAFE(dig_port->tc_phy_fia_idx);
+	if (take)
+		val |= DP_PHY_MODE_STATUS_NOT_SAFE(dig_port->tc_phy_fia_idx);
+
+	intel_uncore_write(uncore,
+			   PORT_TX_DFLEXDPCSSS(dig_port->tc_phy_fia), val);
+
+	return true;
+}
+
+static bool adl_tc_phy_take_ownership(struct intel_digital_port *dig_port,
+				      bool take)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	struct intel_uncore *uncore = &i915->uncore;
+	enum port port = dig_port->base.port;
+	u32 val;
+
+	val = intel_uncore_read(uncore, DDI_BUF_CTL(port));
+	if (take)
+		val |= DDI_BUF_CTL_TC_PHY_OWNERSHIP;
+	else
+		val &= ~DDI_BUF_CTL_TC_PHY_OWNERSHIP;
+	intel_uncore_write(uncore, DDI_BUF_CTL(port), val);
+
+	return true;
+}
+
+static bool tc_phy_take_ownership(struct intel_digital_port *dig_port, bool take)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+
+	if (IS_ALDERLAKE_P(i915))
+		return adl_tc_phy_take_ownership(dig_port, take);
+
+	return icl_tc_phy_take_ownership(dig_port, take);
+}
+
+static bool icl_tc_phy_is_owned(struct intel_digital_port *dig_port)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	struct intel_uncore *uncore = &i915->uncore;
+	u32 val;
+
+	val = intel_uncore_read(uncore,
+				PORT_TX_DFLEXDPCSSS(dig_port->tc_phy_fia));
+	if (val == 0xffffffff) {
+		drm_dbg_kms(&i915->drm,
+			    "Port %s: PHY in TCCOLD, assume not owned\n",
+			    dig_port->tc_port_name);
+		return false;
+	}
+
+	return val & DP_PHY_MODE_STATUS_NOT_SAFE(dig_port->tc_phy_fia_idx);
+}
+
+static bool adl_tc_phy_is_owned(struct intel_digital_port *dig_port)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	struct intel_uncore *uncore = &i915->uncore;
+	enum port port = dig_port->base.port;
+	u32 val;
+
+	val = intel_uncore_read(uncore, DDI_BUF_CTL(port));
+	return val & DDI_BUF_CTL_TC_PHY_OWNERSHIP;
+}
+
+static bool tc_phy_is_owned(struct intel_digital_port *dig_port)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+
+	if (IS_ALDERLAKE_P(i915))
+		return adl_tc_phy_is_owned(dig_port);
+
+	return icl_tc_phy_is_owned(dig_port);
+}
+
+/*
+ * This function implements the first part of the Connect Flow described by our
+ * specification, Gen11 TypeC Programming chapter. The rest of the flow (reading
+ * lanes, EDID, etc) is done as needed in the typical places.
+ *
+ * Unlike the other ports, type-C ports are not available to use as soon as we
+ * get a hotplug. The type-C PHYs can be shared between multiple controllers:
+ * display, USB, etc. As a result, handshaking through FIA is required around
+ * connect and disconnect to cleanly transfer ownership with the controller and
+ * set the type-C power state.
+ */
+static void icl_tc_phy_connect(struct intel_digital_port *dig_port,
+			       int required_lanes)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	u32 live_status_mask;
+	int max_lanes;
+
+	if (!tc_phy_status_complete(dig_port)) {
+		drm_dbg_kms(&i915->drm, "Port %s: PHY not ready\n",
+			    dig_port->tc_port_name);
+		goto out_set_tbt_alt_mode;
+	}
+
+	live_status_mask = tc_port_live_status_mask(dig_port);
+	if (!(live_status_mask & (BIT(TC_PORT_DP_ALT) | BIT(TC_PORT_LEGACY))) &&
+	    !dig_port->tc_legacy_port) {
+		drm_dbg_kms(&i915->drm, "Port %s: PHY ownership not required (live status %02x)\n",
+			    dig_port->tc_port_name, live_status_mask);
+		goto out_set_tbt_alt_mode;
+	}
+
+	if (!tc_phy_take_ownership(dig_port, true) &&
+	    !drm_WARN_ON(&i915->drm, dig_port->tc_legacy_port))
+		goto out_set_tbt_alt_mode;
+
+	max_lanes = intel_tc_port_fia_max_lane_count(dig_port);
+	if (dig_port->tc_legacy_port) {
+		drm_WARN_ON(&i915->drm, max_lanes != 4);
+		dig_port->tc_mode = TC_PORT_LEGACY;
+
+		return;
+	}
+
+	/*
+	 * Now we have to re-check the live state, in case the port recently
+	 * became disconnected. Not necessary for legacy mode.
+	 */
+	if (!(tc_port_live_status_mask(dig_port) & BIT(TC_PORT_DP_ALT))) {
+		drm_dbg_kms(&i915->drm, "Port %s: PHY sudden disconnect\n",
+			    dig_port->tc_port_name);
+		goto out_release_phy;
+	}
+
+	if (max_lanes < required_lanes) {
+		drm_dbg_kms(&i915->drm,
+			    "Port %s: PHY max lanes %d < required lanes %d\n",
+			    dig_port->tc_port_name,
+			    max_lanes, required_lanes);
+		goto out_release_phy;
+	}
+
+	dig_port->tc_mode = TC_PORT_DP_ALT;
+
+	return;
+
+out_release_phy:
+	tc_phy_take_ownership(dig_port, false);
+out_set_tbt_alt_mode:
+	dig_port->tc_mode = TC_PORT_TBT_ALT;
+}
+
+/*
+ * See the comment at the connect function. This implements the Disconnect
+ * Flow.
+ */
+static void icl_tc_phy_disconnect(struct intel_digital_port *dig_port)
+{
+	switch (dig_port->tc_mode) {
+	case TC_PORT_LEGACY:
+	case TC_PORT_DP_ALT:
+		tc_phy_take_ownership(dig_port, false);
+		fallthrough;
+	case TC_PORT_TBT_ALT:
+		dig_port->tc_mode = TC_PORT_DISCONNECTED;
+		fallthrough;
+	case TC_PORT_DISCONNECTED:
+		break;
+	default:
+		MISSING_CASE(dig_port->tc_mode);
+	}
+}
+
+static bool icl_tc_phy_is_connected(struct intel_digital_port *dig_port)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+
+	if (!tc_phy_status_complete(dig_port)) {
+		drm_dbg_kms(&i915->drm, "Port %s: PHY status not complete\n",
+			    dig_port->tc_port_name);
+		return dig_port->tc_mode == TC_PORT_TBT_ALT;
+	}
+
+	/* On ADL-P the PHY complete flag is set in TBT mode as well. */
+	if (IS_ALDERLAKE_P(i915) && dig_port->tc_mode == TC_PORT_TBT_ALT)
+		return true;
+
+	if (!tc_phy_is_owned(dig_port)) {
+		drm_dbg_kms(&i915->drm, "Port %s: PHY not owned\n",
+			    dig_port->tc_port_name);
+
+		return false;
+	}
+
+	return dig_port->tc_mode == TC_PORT_DP_ALT ||
+	       dig_port->tc_mode == TC_PORT_LEGACY;
+}
+
+static enum tc_port_mode
+intel_tc_port_get_current_mode(struct intel_digital_port *dig_port)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	u32 live_status_mask = tc_port_live_status_mask(dig_port);
+	enum tc_port_mode mode;
+
+	if (!tc_phy_is_owned(dig_port) ||
+	    drm_WARN_ON(&i915->drm, !tc_phy_status_complete(dig_port)))
+		return TC_PORT_TBT_ALT;
+
+	mode = dig_port->tc_legacy_port ? TC_PORT_LEGACY : TC_PORT_DP_ALT;
+	if (live_status_mask) {
+		enum tc_port_mode live_mode = fls(live_status_mask) - 1;
+
+		if (!drm_WARN_ON(&i915->drm, live_mode == TC_PORT_TBT_ALT))
+			mode = live_mode;
+	}
+
+	return mode;
+}
+
+static enum tc_port_mode
+intel_tc_port_get_target_mode(struct intel_digital_port *dig_port)
+{
+	u32 live_status_mask = tc_port_live_status_mask(dig_port);
+
+	if (live_status_mask)
+		return fls(live_status_mask) - 1;
+
+	return TC_PORT_TBT_ALT;
+}
+
+static void intel_tc_port_reset_mode(struct intel_digital_port *dig_port,
+				     int required_lanes, bool force_disconnect)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	enum tc_port_mode old_tc_mode = dig_port->tc_mode;
+
+	intel_display_power_flush_work(i915);
+	if (!intel_tc_cold_requires_aux_pw(dig_port)) {
+		enum intel_display_power_domain aux_domain;
+		bool aux_powered;
+
+		aux_domain = intel_aux_power_domain(dig_port);
+		aux_powered = intel_display_power_is_enabled(i915, aux_domain);
+		drm_WARN_ON(&i915->drm, aux_powered);
+	}
+
+	icl_tc_phy_disconnect(dig_port);
+	if (!force_disconnect)
+		icl_tc_phy_connect(dig_port, required_lanes);
+
+	drm_dbg_kms(&i915->drm, "Port %s: TC port mode reset (%s -> %s)\n",
+		    dig_port->tc_port_name,
+		    tc_port_mode_name(old_tc_mode),
+		    tc_port_mode_name(dig_port->tc_mode));
+}
+
+static bool intel_tc_port_needs_reset(struct intel_digital_port *dig_port)
+{
+	return intel_tc_port_get_target_mode(dig_port) != dig_port->tc_mode;
+}
+
+static void intel_tc_port_update_mode(struct intel_digital_port *dig_port,
+				      int required_lanes, bool force_disconnect)
+{
+	enum intel_display_power_domain domain;
+	intel_wakeref_t wref;
+	bool needs_reset = force_disconnect;
+
+	if (!needs_reset) {
+		/* Get power domain required to check the hotplug live status. */
+		wref = tc_cold_block(dig_port, &domain);
+		needs_reset = intel_tc_port_needs_reset(dig_port);
+		tc_cold_unblock(dig_port, domain, wref);
+	}
+
+	if (!needs_reset)
+		return;
+
+	/* Get power domain required for resetting the mode. */
+	wref = tc_cold_block_in_mode(dig_port, TC_PORT_DISCONNECTED, &domain);
+
+	intel_tc_port_reset_mode(dig_port, required_lanes, force_disconnect);
+
+	/* Get power domain matching the new mode after reset. */
+	tc_cold_unblock(dig_port, dig_port->tc_lock_power_domain,
+			fetch_and_zero(&dig_port->tc_lock_wakeref));
+	if (dig_port->tc_mode != TC_PORT_DISCONNECTED)
+		dig_port->tc_lock_wakeref = tc_cold_block(dig_port,
+							  &dig_port->tc_lock_power_domain);
+
+	tc_cold_unblock(dig_port, domain, wref);
+}
+
+static void __intel_tc_port_get_link(struct intel_digital_port *dig_port)
+{
+	dig_port->tc_link_refcount++;
+}
+
+static void __intel_tc_port_put_link(struct intel_digital_port *dig_port)
+{
+	dig_port->tc_link_refcount--;
+}
+
+static bool tc_port_is_enabled(struct intel_digital_port *dig_port)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+
+	assert_tc_port_power_enabled(dig_port);
+
+	return intel_de_read(i915, DDI_BUF_CTL(dig_port->base.port)) &
+	       DDI_BUF_CTL_ENABLE;
+}
+
+/**
+ * intel_tc_port_init_mode: Read out HW state and init the given port's TypeC mode
+ * @dig_port: digital port
+ *
+ * Read out the HW state and initialize the TypeC mode of @dig_port. The mode
+ * will be locked until intel_tc_port_sanitize_mode() is called.
+ */
+void intel_tc_port_init_mode(struct intel_digital_port *dig_port)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	intel_wakeref_t tc_cold_wref;
+	enum intel_display_power_domain domain;
+
+	mutex_lock(&dig_port->tc_lock);
+
+	drm_WARN_ON(&i915->drm, dig_port->tc_mode != TC_PORT_DISCONNECTED);
+	drm_WARN_ON(&i915->drm, dig_port->tc_lock_wakeref);
+	drm_WARN_ON(&i915->drm, dig_port->tc_link_refcount);
+
+	tc_cold_wref = tc_cold_block(dig_port, &domain);
+
+	dig_port->tc_mode = intel_tc_port_get_current_mode(dig_port);
+	/*
+	 * Save the initial mode for the state check in
+	 * intel_tc_port_sanitize_mode().
+	 */
+	dig_port->tc_init_mode = dig_port->tc_mode;
+	dig_port->tc_lock_wakeref = tc_cold_block(dig_port, &dig_port->tc_lock_power_domain);
+
+	/*
+	 * The PHY needs to be connected for AUX to work during HW readout and
+	 * MST topology resume, but the PHY mode can only be changed if the
+	 * port is disabled.
+	 */
+	if (!tc_port_is_enabled(dig_port))
+		intel_tc_port_update_mode(dig_port, 1, false);
+
+	/* Prevent changing dig_port->tc_mode until intel_tc_port_sanitize_mode() is called. */
+	__intel_tc_port_get_link(dig_port);
+
+	tc_cold_unblock(dig_port, domain, tc_cold_wref);
+
+	drm_dbg_kms(&i915->drm, "Port %s: init mode (%s)\n",
+		    dig_port->tc_port_name,
+		    tc_port_mode_name(dig_port->tc_mode));
+
+	mutex_unlock(&dig_port->tc_lock);
+}
+
+/**
+ * intel_tc_port_sanitize_mode: Sanitize the given port's TypeC mode
+ * @dig_port: digital port
+ *
+ * Sanitize @dig_port's TypeC mode wrt. the encoder's state right after driver
+ * loading and system resume:
+ * If the encoder is enabled keep the TypeC mode/PHY connected state locked until
+ * the encoder is disabled.
+ * If the encoder is disabled make sure the PHY is disconnected.
+ */
+void intel_tc_port_sanitize_mode(struct intel_digital_port *dig_port)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	struct intel_encoder *encoder = &dig_port->base;
+	int active_links = 0;
+
+	mutex_lock(&dig_port->tc_lock);
+
+	if (dig_port->dp.is_mst)
+		active_links = intel_dp_mst_encoder_active_links(dig_port);
+	else if (encoder->base.crtc)
+		active_links = to_intel_crtc(encoder->base.crtc)->active;
+
+	drm_WARN_ON(&i915->drm, dig_port->tc_link_refcount != 1);
+	if (active_links) {
+		if (!icl_tc_phy_is_connected(dig_port))
+			drm_dbg_kms(&i915->drm,
+				    "Port %s: PHY disconnected with %d active link(s)\n",
+				    dig_port->tc_port_name, active_links);
+	} else {
+		/*
+		 * TBT-alt is the default mode in any case the PHY ownership is not
+		 * held (regardless of the sink's connected live state), so
+		 * we'll just switch to disconnected mode from it here without
+		 * a note.
+		 */
+		if (dig_port->tc_init_mode != TC_PORT_TBT_ALT)
+			drm_dbg_kms(&i915->drm,
+				    "Port %s: PHY left in %s mode on disabled port, disconnecting it\n",
+				    dig_port->tc_port_name,
+				    tc_port_mode_name(dig_port->tc_init_mode));
+		icl_tc_phy_disconnect(dig_port);
+		__intel_tc_port_put_link(dig_port);
+
+		tc_cold_unblock(dig_port, dig_port->tc_lock_power_domain,
+				fetch_and_zero(&dig_port->tc_lock_wakeref));
+	}
+
+	drm_dbg_kms(&i915->drm, "Port %s: sanitize mode (%s)\n",
+		    dig_port->tc_port_name,
+		    tc_port_mode_name(dig_port->tc_mode));
+
+	mutex_unlock(&dig_port->tc_lock);
+}
+
+/*
+ * The type-C ports are different because even when they are connected, they may
+ * not be available/usable by the graphics driver: see the comment on
+ * icl_tc_phy_connect(). So in our driver instead of adding the additional
+ * concept of "usable" and make everything check for "connected and usable" we
+ * define a port as "connected" when it is not only connected, but also when it
+ * is usable by the rest of the driver. That maintains the old assumption that
+ * connected ports are usable, and avoids exposing to the users objects they
+ * can't really use.
+ */
+bool intel_tc_port_connected(struct intel_encoder *encoder)
+{
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	bool is_connected;
+
+	intel_tc_port_lock(dig_port);
+
+	is_connected = tc_port_live_status_mask(dig_port) &
+		       BIT(dig_port->tc_mode);
+
+	intel_tc_port_unlock(dig_port);
+
+	return is_connected;
+}
+
+static void __intel_tc_port_lock(struct intel_digital_port *dig_port,
+				 int required_lanes)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+
+	mutex_lock(&dig_port->tc_lock);
+
+	cancel_delayed_work(&dig_port->tc_disconnect_phy_work);
+
+	if (!dig_port->tc_link_refcount)
+		intel_tc_port_update_mode(dig_port, required_lanes,
+					  false);
+
+	drm_WARN_ON(&i915->drm, dig_port->tc_mode == TC_PORT_DISCONNECTED);
+	drm_WARN_ON(&i915->drm, dig_port->tc_mode != TC_PORT_TBT_ALT &&
+				!tc_phy_is_owned(dig_port));
+}
+
+void intel_tc_port_lock(struct intel_digital_port *dig_port)
+{
+	__intel_tc_port_lock(dig_port, 1);
+}
+
+/**
+ * intel_tc_port_disconnect_phy_work: disconnect TypeC PHY from display port
+ * @dig_port: digital port
+ *
+ * Disconnect the given digital port from its TypeC PHY (handing back the
+ * control of the PHY to the TypeC subsystem). This will happen in a delayed
+ * manner after each aux transactions and modeset disables.
+ */
+static void intel_tc_port_disconnect_phy_work(struct work_struct *work)
+{
+	struct intel_digital_port *dig_port =
+		container_of(work, struct intel_digital_port, tc_disconnect_phy_work.work);
+
+	mutex_lock(&dig_port->tc_lock);
+
+	if (!dig_port->tc_link_refcount)
+		intel_tc_port_update_mode(dig_port, 1, true);
+
+	mutex_unlock(&dig_port->tc_lock);
+}
+
+/**
+ * intel_tc_port_flush_work: flush the work disconnecting the PHY
+ * @dig_port: digital port
+ *
+ * Flush the delayed work disconnecting an idle PHY.
+ */
+void intel_tc_port_flush_work(struct intel_digital_port *dig_port)
+{
+	flush_delayed_work(&dig_port->tc_disconnect_phy_work);
+}
+
+void intel_tc_port_unlock(struct intel_digital_port *dig_port)
+{
+	if (!dig_port->tc_link_refcount && dig_port->tc_mode != TC_PORT_DISCONNECTED)
+		queue_delayed_work(system_unbound_wq, &dig_port->tc_disconnect_phy_work,
+				   msecs_to_jiffies(1000));
+
+	mutex_unlock(&dig_port->tc_lock);
+}
+
+bool intel_tc_port_ref_held(struct intel_digital_port *dig_port)
+{
+	return mutex_is_locked(&dig_port->tc_lock) ||
+	       dig_port->tc_link_refcount;
+}
+
+void intel_tc_port_get_link(struct intel_digital_port *dig_port,
+			    int required_lanes)
+{
+	__intel_tc_port_lock(dig_port, required_lanes);
+	__intel_tc_port_get_link(dig_port);
+	intel_tc_port_unlock(dig_port);
+}
+
+void intel_tc_port_put_link(struct intel_digital_port *dig_port)
+{
+	intel_tc_port_lock(dig_port);
+	__intel_tc_port_put_link(dig_port);
+	intel_tc_port_unlock(dig_port);
+
+	/*
+	 * Disconnecting the PHY after the PHY's PLL gets disabled may
+	 * hang the system on ADL-P, so disconnect the PHY here synchronously.
+	 * TODO: remove this once the root cause of the ordering requirement
+	 * is found/fixed.
+	 */
+	intel_tc_port_flush_work(dig_port);
+}
+
+static bool
+tc_has_modular_fia(struct drm_i915_private *i915, struct intel_digital_port *dig_port)
+{
+	enum intel_display_power_domain domain;
+	intel_wakeref_t wakeref;
+	u32 val;
+
+	if (!INTEL_INFO(i915)->display.has_modular_fia)
+		return false;
+
+	mutex_lock(&dig_port->tc_lock);
+	wakeref = tc_cold_block(dig_port, &domain);
+	val = intel_uncore_read(&i915->uncore, PORT_TX_DFLEXDPSP(FIA1));
+	tc_cold_unblock(dig_port, domain, wakeref);
+	mutex_unlock(&dig_port->tc_lock);
+
+	drm_WARN_ON(&i915->drm, val == 0xffffffff);
+
+	return val & MODULAR_FIA_MASK;
+}
+
+static void
+tc_port_load_fia_params(struct drm_i915_private *i915, struct intel_digital_port *dig_port)
+{
+	enum port port = dig_port->base.port;
+	enum tc_port tc_port = intel_port_to_tc(i915, port);
+
+	/*
+	 * Each Modular FIA instance houses 2 TC ports. In SOC that has more
+	 * than two TC ports, there are multiple instances of Modular FIA.
+	 */
+	if (tc_has_modular_fia(i915, dig_port)) {
+		dig_port->tc_phy_fia = tc_port / 2;
+		dig_port->tc_phy_fia_idx = tc_port % 2;
+	} else {
+		dig_port->tc_phy_fia = FIA1;
+		dig_port->tc_phy_fia_idx = tc_port;
+	}
+}
+
+void intel_tc_port_init(struct intel_digital_port *dig_port, bool is_legacy)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	enum port port = dig_port->base.port;
+	enum tc_port tc_port = intel_port_to_tc(i915, port);
+
+	if (drm_WARN_ON(&i915->drm, tc_port == TC_PORT_NONE))
+		return;
+
+	snprintf(dig_port->tc_port_name, sizeof(dig_port->tc_port_name),
+		 "%c/TC#%d", port_name(port), tc_port + 1);
+
+	mutex_init(&dig_port->tc_lock);
+	INIT_DELAYED_WORK(&dig_port->tc_disconnect_phy_work, intel_tc_port_disconnect_phy_work);
+	dig_port->tc_legacy_port = is_legacy;
+	dig_port->tc_mode = TC_PORT_DISCONNECTED;
+	dig_port->tc_link_refcount = 0;
+	tc_port_load_fia_params(i915, dig_port);
+
+	intel_tc_port_init_mode(dig_port);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_tc.h b/drivers/gpu/drm/i915/display/intel_tc.h
new file mode 100644
index 000000000..d54082e2d
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_tc.h
@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_TC_H__
+#define __INTEL_TC_H__
+
+#include <linux/mutex.h>
+#include <linux/types.h>
+
+struct intel_digital_port;
+struct intel_encoder;
+
+bool intel_tc_port_in_tbt_alt_mode(struct intel_digital_port *dig_port);
+bool intel_tc_port_in_dp_alt_mode(struct intel_digital_port *dig_port);
+bool intel_tc_port_in_legacy_mode(struct intel_digital_port *dig_port);
+
+bool intel_tc_port_connected(struct intel_encoder *encoder);
+
+u32 intel_tc_port_get_lane_mask(struct intel_digital_port *dig_port);
+u32 intel_tc_port_get_pin_assignment_mask(struct intel_digital_port *dig_port);
+int intel_tc_port_fia_max_lane_count(struct intel_digital_port *dig_port);
+void intel_tc_port_set_fia_lane_count(struct intel_digital_port *dig_port,
+				      int required_lanes);
+
+void intel_tc_port_init_mode(struct intel_digital_port *dig_port);
+void intel_tc_port_sanitize_mode(struct intel_digital_port *dig_port);
+void intel_tc_port_lock(struct intel_digital_port *dig_port);
+void intel_tc_port_unlock(struct intel_digital_port *dig_port);
+void intel_tc_port_flush_work(struct intel_digital_port *dig_port);
+void intel_tc_port_get_link(struct intel_digital_port *dig_port,
+			    int required_lanes);
+void intel_tc_port_put_link(struct intel_digital_port *dig_port);
+bool intel_tc_port_ref_held(struct intel_digital_port *dig_port);
+
+void intel_tc_port_init(struct intel_digital_port *dig_port, bool is_legacy);
+
+bool intel_tc_cold_requires_aux_pw(struct intel_digital_port *dig_port);
+
+#endif /* __INTEL_TC_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_tc_phy_regs.h b/drivers/gpu/drm/i915/display/intel_tc_phy_regs.h
new file mode 100644
index 000000000..5a545086f
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_tc_phy_regs.h
@@ -0,0 +1,280 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#ifndef __INTEL_TC_PHY_REGS__
+#define __INTEL_TC_PHY_REGS__
+
+#include "i915_reg_defs.h"
+
+#define MG_PHY_PORT_LN(ln, tc_port, ln0p1, ln0p2, ln1p1) \
+	_MMIO(_PORT(tc_port, ln0p1, ln0p2) + (ln) * ((ln1p1) - (ln0p1)))
+
+#define MG_TX_LINK_PARAMS_TX1LN0_PORT1		0x16812C
+#define MG_TX_LINK_PARAMS_TX1LN1_PORT1		0x16852C
+#define MG_TX_LINK_PARAMS_TX1LN0_PORT2		0x16912C
+#define MG_TX_LINK_PARAMS_TX1LN1_PORT2		0x16952C
+#define MG_TX1_LINK_PARAMS(ln, tc_port) \
+	MG_PHY_PORT_LN(ln, tc_port, MG_TX_LINK_PARAMS_TX1LN0_PORT1, \
+		       MG_TX_LINK_PARAMS_TX1LN0_PORT2, \
+		       MG_TX_LINK_PARAMS_TX1LN1_PORT1)
+
+#define MG_TX_LINK_PARAMS_TX2LN0_PORT1		0x1680AC
+#define MG_TX_LINK_PARAMS_TX2LN1_PORT1		0x1684AC
+#define MG_TX_LINK_PARAMS_TX2LN0_PORT2		0x1690AC
+#define MG_TX_LINK_PARAMS_TX2LN1_PORT2		0x1694AC
+#define MG_TX2_LINK_PARAMS(ln, tc_port) \
+	MG_PHY_PORT_LN(ln, tc_port, MG_TX_LINK_PARAMS_TX2LN0_PORT1, \
+		       MG_TX_LINK_PARAMS_TX2LN0_PORT2, \
+		       MG_TX_LINK_PARAMS_TX2LN1_PORT1)
+#define   CRI_USE_FS32			(1 << 5)
+
+#define MG_TX_PISO_READLOAD_TX1LN0_PORT1		0x16814C
+#define MG_TX_PISO_READLOAD_TX1LN1_PORT1		0x16854C
+#define MG_TX_PISO_READLOAD_TX1LN0_PORT2		0x16914C
+#define MG_TX_PISO_READLOAD_TX1LN1_PORT2		0x16954C
+#define MG_TX1_PISO_READLOAD(ln, tc_port) \
+	MG_PHY_PORT_LN(ln, tc_port, MG_TX_PISO_READLOAD_TX1LN0_PORT1, \
+		       MG_TX_PISO_READLOAD_TX1LN0_PORT2, \
+		       MG_TX_PISO_READLOAD_TX1LN1_PORT1)
+
+#define MG_TX_PISO_READLOAD_TX2LN0_PORT1		0x1680CC
+#define MG_TX_PISO_READLOAD_TX2LN1_PORT1		0x1684CC
+#define MG_TX_PISO_READLOAD_TX2LN0_PORT2		0x1690CC
+#define MG_TX_PISO_READLOAD_TX2LN1_PORT2		0x1694CC
+#define MG_TX2_PISO_READLOAD(ln, tc_port) \
+	MG_PHY_PORT_LN(ln, tc_port, MG_TX_PISO_READLOAD_TX2LN0_PORT1, \
+		       MG_TX_PISO_READLOAD_TX2LN0_PORT2, \
+		       MG_TX_PISO_READLOAD_TX2LN1_PORT1)
+#define   CRI_CALCINIT					(1 << 1)
+
+#define MG_TX_SWINGCTRL_TX1LN0_PORT1		0x168148
+#define MG_TX_SWINGCTRL_TX1LN1_PORT1		0x168548
+#define MG_TX_SWINGCTRL_TX1LN0_PORT2		0x169148
+#define MG_TX_SWINGCTRL_TX1LN1_PORT2		0x169548
+#define MG_TX1_SWINGCTRL(ln, tc_port) \
+	MG_PHY_PORT_LN(ln, tc_port, MG_TX_SWINGCTRL_TX1LN0_PORT1, \
+		       MG_TX_SWINGCTRL_TX1LN0_PORT2, \
+		       MG_TX_SWINGCTRL_TX1LN1_PORT1)
+
+#define MG_TX_SWINGCTRL_TX2LN0_PORT1		0x1680C8
+#define MG_TX_SWINGCTRL_TX2LN1_PORT1		0x1684C8
+#define MG_TX_SWINGCTRL_TX2LN0_PORT2		0x1690C8
+#define MG_TX_SWINGCTRL_TX2LN1_PORT2		0x1694C8
+#define MG_TX2_SWINGCTRL(ln, tc_port) \
+	MG_PHY_PORT_LN(ln, tc_port, MG_TX_SWINGCTRL_TX2LN0_PORT1, \
+		       MG_TX_SWINGCTRL_TX2LN0_PORT2, \
+		       MG_TX_SWINGCTRL_TX2LN1_PORT1)
+#define   CRI_TXDEEMPH_OVERRIDE_17_12(x)		((x) << 0)
+#define   CRI_TXDEEMPH_OVERRIDE_17_12_MASK		(0x3F << 0)
+
+#define MG_TX_DRVCTRL_TX1LN0_TXPORT1			0x168144
+#define MG_TX_DRVCTRL_TX1LN1_TXPORT1			0x168544
+#define MG_TX_DRVCTRL_TX1LN0_TXPORT2			0x169144
+#define MG_TX_DRVCTRL_TX1LN1_TXPORT2			0x169544
+#define MG_TX_DRVCTRL_TX1LN0_TXPORT3			0x16A144
+#define MG_TX_DRVCTRL_TX1LN1_TXPORT3			0x16A544
+#define MG_TX_DRVCTRL_TX1LN0_TXPORT4			0x16B144
+#define MG_TX_DRVCTRL_TX1LN1_TXPORT4			0x16B544
+#define MG_TX1_DRVCTRL(ln, tc_port) \
+	MG_PHY_PORT_LN(ln, tc_port, MG_TX_DRVCTRL_TX1LN0_TXPORT1, \
+		       MG_TX_DRVCTRL_TX1LN0_TXPORT2, \
+		       MG_TX_DRVCTRL_TX1LN1_TXPORT1)
+
+#define MG_TX_DRVCTRL_TX2LN0_PORT1			0x1680C4
+#define MG_TX_DRVCTRL_TX2LN1_PORT1			0x1684C4
+#define MG_TX_DRVCTRL_TX2LN0_PORT2			0x1690C4
+#define MG_TX_DRVCTRL_TX2LN1_PORT2			0x1694C4
+#define MG_TX2_DRVCTRL(ln, tc_port) \
+	MG_PHY_PORT_LN(ln, tc_port, MG_TX_DRVCTRL_TX2LN0_PORT1, \
+		       MG_TX_DRVCTRL_TX2LN0_PORT2, \
+		       MG_TX_DRVCTRL_TX2LN1_PORT1)
+#define   CRI_TXDEEMPH_OVERRIDE_11_6(x)			((x) << 24)
+#define   CRI_TXDEEMPH_OVERRIDE_11_6_MASK		(0x3F << 24)
+#define   CRI_TXDEEMPH_OVERRIDE_EN			(1 << 22)
+#define   CRI_TXDEEMPH_OVERRIDE_5_0(x)			((x) << 16)
+#define   CRI_TXDEEMPH_OVERRIDE_5_0_MASK		(0x3F << 16)
+#define   CRI_LOADGEN_SEL(x)				((x) << 12)
+#define   CRI_LOADGEN_SEL_MASK				(0x3 << 12)
+
+#define MG_CLKHUB_LN0_PORT1			0x16839C
+#define MG_CLKHUB_LN1_PORT1			0x16879C
+#define MG_CLKHUB_LN0_PORT2			0x16939C
+#define MG_CLKHUB_LN1_PORT2			0x16979C
+#define MG_CLKHUB(ln, tc_port) \
+	MG_PHY_PORT_LN(ln, tc_port, MG_CLKHUB_LN0_PORT1, \
+		       MG_CLKHUB_LN0_PORT2, \
+		       MG_CLKHUB_LN1_PORT1)
+#define   CFG_LOW_RATE_LKREN_EN				(1 << 11)
+
+#define MG_TX_DCC_TX1LN0_PORT1			0x168110
+#define MG_TX_DCC_TX1LN1_PORT1			0x168510
+#define MG_TX_DCC_TX1LN0_PORT2			0x169110
+#define MG_TX_DCC_TX1LN1_PORT2			0x169510
+#define MG_TX1_DCC(ln, tc_port) \
+	MG_PHY_PORT_LN(ln, tc_port, MG_TX_DCC_TX1LN0_PORT1, \
+		       MG_TX_DCC_TX1LN0_PORT2, \
+		       MG_TX_DCC_TX1LN1_PORT1)
+#define MG_TX_DCC_TX2LN0_PORT1			0x168090
+#define MG_TX_DCC_TX2LN1_PORT1			0x168490
+#define MG_TX_DCC_TX2LN0_PORT2			0x169090
+#define MG_TX_DCC_TX2LN1_PORT2			0x169490
+#define MG_TX2_DCC(ln, tc_port) \
+	MG_PHY_PORT_LN(ln, tc_port, MG_TX_DCC_TX2LN0_PORT1, \
+		       MG_TX_DCC_TX2LN0_PORT2, \
+		       MG_TX_DCC_TX2LN1_PORT1)
+#define   CFG_AMI_CK_DIV_OVERRIDE_VAL(x)	((x) << 25)
+#define   CFG_AMI_CK_DIV_OVERRIDE_VAL_MASK	(0x3 << 25)
+#define   CFG_AMI_CK_DIV_OVERRIDE_EN		(1 << 24)
+
+#define MG_DP_MODE_LN0_ACU_PORT1			0x1683A0
+#define MG_DP_MODE_LN1_ACU_PORT1			0x1687A0
+#define MG_DP_MODE_LN0_ACU_PORT2			0x1693A0
+#define MG_DP_MODE_LN1_ACU_PORT2			0x1697A0
+#define MG_DP_MODE(ln, tc_port)	\
+	MG_PHY_PORT_LN(ln, tc_port, MG_DP_MODE_LN0_ACU_PORT1, \
+		       MG_DP_MODE_LN0_ACU_PORT2, \
+		       MG_DP_MODE_LN1_ACU_PORT1)
+#define   MG_DP_MODE_CFG_DP_X2_MODE			(1 << 7)
+#define   MG_DP_MODE_CFG_DP_X1_MODE			(1 << 6)
+
+#define FIA1_BASE			0x163000
+#define FIA2_BASE			0x16E000
+#define FIA3_BASE			0x16F000
+#define _FIA(fia)			_PICK((fia), FIA1_BASE, FIA2_BASE, FIA3_BASE)
+#define _MMIO_FIA(fia, off)		_MMIO(_FIA(fia) + (off))
+
+/* ICL PHY DFLEX registers */
+#define PORT_TX_DFLEXDPMLE1(fia)		_MMIO_FIA((fia),  0x008C0)
+#define   DFLEXDPMLE1_DPMLETC_MASK(idx)		(0xf << (4 * (idx)))
+#define   DFLEXDPMLE1_DPMLETC_ML0(idx)		(1 << (4 * (idx)))
+#define   DFLEXDPMLE1_DPMLETC_ML1_0(idx)	(3 << (4 * (idx)))
+#define   DFLEXDPMLE1_DPMLETC_ML3(idx)		(8 << (4 * (idx)))
+#define   DFLEXDPMLE1_DPMLETC_ML3_2(idx)	(12 << (4 * (idx)))
+#define   DFLEXDPMLE1_DPMLETC_ML3_0(idx)	(15 << (4 * (idx)))
+
+#define _MG_REFCLKIN_CTL_PORT1				0x16892C
+#define _MG_REFCLKIN_CTL_PORT2				0x16992C
+#define   MG_REFCLKIN_CTL_OD_2_MUX(x)			((x) << 8)
+#define   MG_REFCLKIN_CTL_OD_2_MUX_MASK			(0x7 << 8)
+#define MG_REFCLKIN_CTL(tc_port) _MMIO_PORT((tc_port), \
+					    _MG_REFCLKIN_CTL_PORT1, \
+					    _MG_REFCLKIN_CTL_PORT2)
+
+#define _MG_CLKTOP2_CORECLKCTL1_PORT1			0x1688D8
+#define _MG_CLKTOP2_CORECLKCTL1_PORT2			0x1698D8
+#define   MG_CLKTOP2_CORECLKCTL1_B_DIVRATIO(x)		((x) << 16)
+#define   MG_CLKTOP2_CORECLKCTL1_B_DIVRATIO_MASK	(0xff << 16)
+#define   MG_CLKTOP2_CORECLKCTL1_A_DIVRATIO(x)		((x) << 8)
+#define   MG_CLKTOP2_CORECLKCTL1_A_DIVRATIO_MASK	(0xff << 8)
+#define MG_CLKTOP2_CORECLKCTL1(tc_port) _MMIO_PORT((tc_port), \
+						   _MG_CLKTOP2_CORECLKCTL1_PORT1, \
+						   _MG_CLKTOP2_CORECLKCTL1_PORT2)
+
+#define _MG_CLKTOP2_HSCLKCTL_PORT1			0x1688D4
+#define _MG_CLKTOP2_HSCLKCTL_PORT2			0x1698D4
+#define   MG_CLKTOP2_HSCLKCTL_CORE_INPUTSEL(x)		((x) << 16)
+#define   MG_CLKTOP2_HSCLKCTL_CORE_INPUTSEL_MASK	(0x1 << 16)
+#define   MG_CLKTOP2_HSCLKCTL_TLINEDRV_CLKSEL(x)	((x) << 14)
+#define   MG_CLKTOP2_HSCLKCTL_TLINEDRV_CLKSEL_MASK	(0x3 << 14)
+#define   MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_MASK		(0x3 << 12)
+#define   MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_2		(0 << 12)
+#define   MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_3		(1 << 12)
+#define   MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_5		(2 << 12)
+#define   MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_7		(3 << 12)
+#define   MG_CLKTOP2_HSCLKCTL_DSDIV_RATIO(x)		((x) << 8)
+#define   MG_CLKTOP2_HSCLKCTL_DSDIV_RATIO_SHIFT		8
+#define   MG_CLKTOP2_HSCLKCTL_DSDIV_RATIO_MASK		(0xf << 8)
+#define MG_CLKTOP2_HSCLKCTL(tc_port) _MMIO_PORT((tc_port), \
+						_MG_CLKTOP2_HSCLKCTL_PORT1, \
+						_MG_CLKTOP2_HSCLKCTL_PORT2)
+
+#define _MG_PLL_DIV0_PORT1				0x168A00
+#define _MG_PLL_DIV0_PORT2				0x169A00
+#define   MG_PLL_DIV0_FRACNEN_H				(1 << 30)
+#define   MG_PLL_DIV0_FBDIV_FRAC_MASK			(0x3fffff << 8)
+#define   MG_PLL_DIV0_FBDIV_FRAC_SHIFT			8
+#define   MG_PLL_DIV0_FBDIV_FRAC(x)			((x) << 8)
+#define   MG_PLL_DIV0_FBDIV_INT_MASK			(0xff << 0)
+#define   MG_PLL_DIV0_FBDIV_INT(x)			((x) << 0)
+#define MG_PLL_DIV0(tc_port) _MMIO_PORT((tc_port), _MG_PLL_DIV0_PORT1, \
+					_MG_PLL_DIV0_PORT2)
+
+#define _MG_PLL_DIV1_PORT1				0x168A04
+#define _MG_PLL_DIV1_PORT2				0x169A04
+#define   MG_PLL_DIV1_IREF_NDIVRATIO(x)			((x) << 16)
+#define   MG_PLL_DIV1_DITHER_DIV_1			(0 << 12)
+#define   MG_PLL_DIV1_DITHER_DIV_2			(1 << 12)
+#define   MG_PLL_DIV1_DITHER_DIV_4			(2 << 12)
+#define   MG_PLL_DIV1_DITHER_DIV_8			(3 << 12)
+#define   MG_PLL_DIV1_NDIVRATIO(x)			((x) << 4)
+#define   MG_PLL_DIV1_FBPREDIV_MASK			(0xf << 0)
+#define   MG_PLL_DIV1_FBPREDIV(x)			((x) << 0)
+#define MG_PLL_DIV1(tc_port) _MMIO_PORT((tc_port), _MG_PLL_DIV1_PORT1, \
+					_MG_PLL_DIV1_PORT2)
+
+#define _MG_PLL_LF_PORT1				0x168A08
+#define _MG_PLL_LF_PORT2				0x169A08
+#define   MG_PLL_LF_TDCTARGETCNT(x)			((x) << 24)
+#define   MG_PLL_LF_AFCCNTSEL_256			(0 << 20)
+#define   MG_PLL_LF_AFCCNTSEL_512			(1 << 20)
+#define   MG_PLL_LF_GAINCTRL(x)				((x) << 16)
+#define   MG_PLL_LF_INT_COEFF(x)			((x) << 8)
+#define   MG_PLL_LF_PROP_COEFF(x)			((x) << 0)
+#define MG_PLL_LF(tc_port) _MMIO_PORT((tc_port), _MG_PLL_LF_PORT1, \
+				      _MG_PLL_LF_PORT2)
+
+#define _MG_PLL_FRAC_LOCK_PORT1				0x168A0C
+#define _MG_PLL_FRAC_LOCK_PORT2				0x169A0C
+#define   MG_PLL_FRAC_LOCK_TRUELOCK_CRIT_32		(1 << 18)
+#define   MG_PLL_FRAC_LOCK_EARLYLOCK_CRIT_32		(1 << 16)
+#define   MG_PLL_FRAC_LOCK_LOCKTHRESH(x)		((x) << 11)
+#define   MG_PLL_FRAC_LOCK_DCODITHEREN			(1 << 10)
+#define   MG_PLL_FRAC_LOCK_FEEDFWRDCAL_EN		(1 << 8)
+#define   MG_PLL_FRAC_LOCK_FEEDFWRDGAIN(x)		((x) << 0)
+#define MG_PLL_FRAC_LOCK(tc_port) _MMIO_PORT((tc_port), \
+					     _MG_PLL_FRAC_LOCK_PORT1, \
+					     _MG_PLL_FRAC_LOCK_PORT2)
+
+#define _MG_PLL_SSC_PORT1				0x168A10
+#define _MG_PLL_SSC_PORT2				0x169A10
+#define   MG_PLL_SSC_EN					(1 << 28)
+#define   MG_PLL_SSC_TYPE(x)				((x) << 26)
+#define   MG_PLL_SSC_STEPLENGTH(x)			((x) << 16)
+#define   MG_PLL_SSC_STEPNUM(x)				((x) << 10)
+#define   MG_PLL_SSC_FLLEN				(1 << 9)
+#define   MG_PLL_SSC_STEPSIZE(x)			((x) << 0)
+#define MG_PLL_SSC(tc_port) _MMIO_PORT((tc_port), _MG_PLL_SSC_PORT1, \
+				       _MG_PLL_SSC_PORT2)
+
+#define _MG_PLL_BIAS_PORT1				0x168A14
+#define _MG_PLL_BIAS_PORT2				0x169A14
+#define   MG_PLL_BIAS_BIAS_GB_SEL(x)			((x) << 30)
+#define   MG_PLL_BIAS_BIAS_GB_SEL_MASK			(0x3 << 30)
+#define   MG_PLL_BIAS_INIT_DCOAMP(x)			((x) << 24)
+#define   MG_PLL_BIAS_INIT_DCOAMP_MASK			(0x3f << 24)
+#define   MG_PLL_BIAS_BIAS_BONUS(x)			((x) << 16)
+#define   MG_PLL_BIAS_BIAS_BONUS_MASK			(0xff << 16)
+#define   MG_PLL_BIAS_BIASCAL_EN			(1 << 15)
+#define   MG_PLL_BIAS_CTRIM(x)				((x) << 8)
+#define   MG_PLL_BIAS_CTRIM_MASK			(0x1f << 8)
+#define   MG_PLL_BIAS_VREF_RDAC(x)			((x) << 5)
+#define   MG_PLL_BIAS_VREF_RDAC_MASK			(0x7 << 5)
+#define   MG_PLL_BIAS_IREFTRIM(x)			((x) << 0)
+#define   MG_PLL_BIAS_IREFTRIM_MASK			(0x1f << 0)
+#define MG_PLL_BIAS(tc_port) _MMIO_PORT((tc_port), _MG_PLL_BIAS_PORT1, \
+					_MG_PLL_BIAS_PORT2)
+
+#define _MG_PLL_TDC_COLDST_BIAS_PORT1			0x168A18
+#define _MG_PLL_TDC_COLDST_BIAS_PORT2			0x169A18
+#define   MG_PLL_TDC_COLDST_IREFINT_EN			(1 << 27)
+#define   MG_PLL_TDC_COLDST_REFBIAS_START_PULSE_W(x)	((x) << 17)
+#define   MG_PLL_TDC_COLDST_COLDSTART			(1 << 16)
+#define   MG_PLL_TDC_TDCOVCCORR_EN			(1 << 2)
+#define   MG_PLL_TDC_TDCSEL(x)				((x) << 0)
+#define MG_PLL_TDC_COLDST_BIAS(tc_port) _MMIO_PORT((tc_port), \
+						   _MG_PLL_TDC_COLDST_BIAS_PORT1, \
+						   _MG_PLL_TDC_COLDST_BIAS_PORT2)
+
+#endif /* __INTEL_TC_PHY_REGS__ */
diff --git a/drivers/gpu/drm/i915/display/intel_tv.c b/drivers/gpu/drm/i915/display/intel_tv.c
new file mode 100644
index 000000000..fb25be800
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_tv.c
@@ -0,0 +1,2020 @@
+/*
+ * Copyright © 2006-2008 Intel Corporation
+ *   Jesse Barnes <jesse.barnes@intel.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Eric Anholt <eric@anholt.net>
+ *
+ */
+
+/** @file
+ * Integrated TV-out support for the 915GM and 945GM.
+ */
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_edid.h>
+
+#include "i915_drv.h"
+#include "intel_connector.h"
+#include "intel_crtc.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_dpll.h"
+#include "intel_hotplug.h"
+#include "intel_tv.h"
+
+enum tv_margin {
+	TV_MARGIN_LEFT, TV_MARGIN_TOP,
+	TV_MARGIN_RIGHT, TV_MARGIN_BOTTOM
+};
+
+struct intel_tv {
+	struct intel_encoder base;
+
+	int type;
+};
+
+struct video_levels {
+	u16 blank, black;
+	u8 burst;
+};
+
+struct color_conversion {
+	u16 ry, gy, by, ay;
+	u16 ru, gu, bu, au;
+	u16 rv, gv, bv, av;
+};
+
+static const u32 filter_table[] = {
+	0xB1403000, 0x2E203500, 0x35002E20, 0x3000B140,
+	0x35A0B160, 0x2DC02E80, 0xB1403480, 0xB1603000,
+	0x2EA03640, 0x34002D80, 0x3000B120, 0x36E0B160,
+	0x2D202EF0, 0xB1203380, 0xB1603000, 0x2F303780,
+	0x33002CC0, 0x3000B100, 0x3820B160, 0x2C802F50,
+	0xB10032A0, 0xB1603000, 0x2F9038C0, 0x32202C20,
+	0x3000B0E0, 0x3980B160, 0x2BC02FC0, 0xB0E031C0,
+	0xB1603000, 0x2FF03A20, 0x31602B60, 0xB020B0C0,
+	0x3AE0B160, 0x2B001810, 0xB0C03120, 0xB140B020,
+	0x18283BA0, 0x30C02A80, 0xB020B0A0, 0x3C60B140,
+	0x2A201838, 0xB0A03080, 0xB120B020, 0x18383D20,
+	0x304029C0, 0xB040B080, 0x3DE0B100, 0x29601848,
+	0xB0803000, 0xB100B040, 0x18483EC0, 0xB0402900,
+	0xB040B060, 0x3F80B0C0, 0x28801858, 0xB060B080,
+	0xB0A0B060, 0x18602820, 0xB0A02820, 0x0000B060,
+	0xB1403000, 0x2E203500, 0x35002E20, 0x3000B140,
+	0x35A0B160, 0x2DC02E80, 0xB1403480, 0xB1603000,
+	0x2EA03640, 0x34002D80, 0x3000B120, 0x36E0B160,
+	0x2D202EF0, 0xB1203380, 0xB1603000, 0x2F303780,
+	0x33002CC0, 0x3000B100, 0x3820B160, 0x2C802F50,
+	0xB10032A0, 0xB1603000, 0x2F9038C0, 0x32202C20,
+	0x3000B0E0, 0x3980B160, 0x2BC02FC0, 0xB0E031C0,
+	0xB1603000, 0x2FF03A20, 0x31602B60, 0xB020B0C0,
+	0x3AE0B160, 0x2B001810, 0xB0C03120, 0xB140B020,
+	0x18283BA0, 0x30C02A80, 0xB020B0A0, 0x3C60B140,
+	0x2A201838, 0xB0A03080, 0xB120B020, 0x18383D20,
+	0x304029C0, 0xB040B080, 0x3DE0B100, 0x29601848,
+	0xB0803000, 0xB100B040, 0x18483EC0, 0xB0402900,
+	0xB040B060, 0x3F80B0C0, 0x28801858, 0xB060B080,
+	0xB0A0B060, 0x18602820, 0xB0A02820, 0x0000B060,
+	0x36403000, 0x2D002CC0, 0x30003640, 0x2D0036C0,
+	0x35C02CC0, 0x37403000, 0x2C802D40, 0x30003540,
+	0x2D8037C0, 0x34C02C40, 0x38403000, 0x2BC02E00,
+	0x30003440, 0x2E2038C0, 0x34002B80, 0x39803000,
+	0x2B402E40, 0x30003380, 0x2E603A00, 0x33402B00,
+	0x3A803040, 0x2A802EA0, 0x30403300, 0x2EC03B40,
+	0x32802A40, 0x3C003040, 0x2A002EC0, 0x30803240,
+	0x2EC03C80, 0x320029C0, 0x3D403080, 0x29402F00,
+	0x308031C0, 0x2F203DC0, 0x31802900, 0x3E8030C0,
+	0x28802F40, 0x30C03140, 0x2F203F40, 0x31402840,
+	0x28003100, 0x28002F00, 0x00003100, 0x36403000,
+	0x2D002CC0, 0x30003640, 0x2D0036C0,
+	0x35C02CC0, 0x37403000, 0x2C802D40, 0x30003540,
+	0x2D8037C0, 0x34C02C40, 0x38403000, 0x2BC02E00,
+	0x30003440, 0x2E2038C0, 0x34002B80, 0x39803000,
+	0x2B402E40, 0x30003380, 0x2E603A00, 0x33402B00,
+	0x3A803040, 0x2A802EA0, 0x30403300, 0x2EC03B40,
+	0x32802A40, 0x3C003040, 0x2A002EC0, 0x30803240,
+	0x2EC03C80, 0x320029C0, 0x3D403080, 0x29402F00,
+	0x308031C0, 0x2F203DC0, 0x31802900, 0x3E8030C0,
+	0x28802F40, 0x30C03140, 0x2F203F40, 0x31402840,
+	0x28003100, 0x28002F00, 0x00003100,
+};
+
+/*
+ * Color conversion values have 3 separate fixed point formats:
+ *
+ * 10 bit fields (ay, au)
+ *   1.9 fixed point (b.bbbbbbbbb)
+ * 11 bit fields (ry, by, ru, gu, gv)
+ *   exp.mantissa (ee.mmmmmmmmm)
+ *   ee = 00 = 10^-1 (0.mmmmmmmmm)
+ *   ee = 01 = 10^-2 (0.0mmmmmmmmm)
+ *   ee = 10 = 10^-3 (0.00mmmmmmmmm)
+ *   ee = 11 = 10^-4 (0.000mmmmmmmmm)
+ * 12 bit fields (gy, rv, bu)
+ *   exp.mantissa (eee.mmmmmmmmm)
+ *   eee = 000 = 10^-1 (0.mmmmmmmmm)
+ *   eee = 001 = 10^-2 (0.0mmmmmmmmm)
+ *   eee = 010 = 10^-3 (0.00mmmmmmmmm)
+ *   eee = 011 = 10^-4 (0.000mmmmmmmmm)
+ *   eee = 100 = reserved
+ *   eee = 101 = reserved
+ *   eee = 110 = reserved
+ *   eee = 111 = 10^0 (m.mmmmmmmm) (only usable for 1.0 representation)
+ *
+ * Saturation and contrast are 8 bits, with their own representation:
+ * 8 bit field (saturation, contrast)
+ *   exp.mantissa (ee.mmmmmm)
+ *   ee = 00 = 10^-1 (0.mmmmmm)
+ *   ee = 01 = 10^0 (m.mmmmm)
+ *   ee = 10 = 10^1 (mm.mmmm)
+ *   ee = 11 = 10^2 (mmm.mmm)
+ *
+ * Simple conversion function:
+ *
+ * static u32
+ * float_to_csc_11(float f)
+ * {
+ *     u32 exp;
+ *     u32 mant;
+ *     u32 ret;
+ *
+ *     if (f < 0)
+ *         f = -f;
+ *
+ *     if (f >= 1) {
+ *         exp = 0x7;
+ *	   mant = 1 << 8;
+ *     } else {
+ *         for (exp = 0; exp < 3 && f < 0.5; exp++)
+ *	   f *= 2.0;
+ *         mant = (f * (1 << 9) + 0.5);
+ *         if (mant >= (1 << 9))
+ *             mant = (1 << 9) - 1;
+ *     }
+ *     ret = (exp << 9) | mant;
+ *     return ret;
+ * }
+ */
+
+/*
+ * Behold, magic numbers!  If we plant them they might grow a big
+ * s-video cable to the sky... or something.
+ *
+ * Pre-converted to appropriate hex value.
+ */
+
+/*
+ * PAL & NTSC values for composite & s-video connections
+ */
+static const struct color_conversion ntsc_m_csc_composite = {
+	.ry = 0x0332, .gy = 0x012d, .by = 0x07d3, .ay = 0x0104,
+	.ru = 0x0733, .gu = 0x052d, .bu = 0x05c7, .au = 0x0200,
+	.rv = 0x0340, .gv = 0x030c, .bv = 0x06d0, .av = 0x0200,
+};
+
+static const struct video_levels ntsc_m_levels_composite = {
+	.blank = 225, .black = 267, .burst = 113,
+};
+
+static const struct color_conversion ntsc_m_csc_svideo = {
+	.ry = 0x0332, .gy = 0x012d, .by = 0x07d3, .ay = 0x0133,
+	.ru = 0x076a, .gu = 0x0564, .bu = 0x030d, .au = 0x0200,
+	.rv = 0x037a, .gv = 0x033d, .bv = 0x06f6, .av = 0x0200,
+};
+
+static const struct video_levels ntsc_m_levels_svideo = {
+	.blank = 266, .black = 316, .burst = 133,
+};
+
+static const struct color_conversion ntsc_j_csc_composite = {
+	.ry = 0x0332, .gy = 0x012d, .by = 0x07d3, .ay = 0x0119,
+	.ru = 0x074c, .gu = 0x0546, .bu = 0x05ec, .au = 0x0200,
+	.rv = 0x035a, .gv = 0x0322, .bv = 0x06e1, .av = 0x0200,
+};
+
+static const struct video_levels ntsc_j_levels_composite = {
+	.blank = 225, .black = 225, .burst = 113,
+};
+
+static const struct color_conversion ntsc_j_csc_svideo = {
+	.ry = 0x0332, .gy = 0x012d, .by = 0x07d3, .ay = 0x014c,
+	.ru = 0x0788, .gu = 0x0581, .bu = 0x0322, .au = 0x0200,
+	.rv = 0x0399, .gv = 0x0356, .bv = 0x070a, .av = 0x0200,
+};
+
+static const struct video_levels ntsc_j_levels_svideo = {
+	.blank = 266, .black = 266, .burst = 133,
+};
+
+static const struct color_conversion pal_csc_composite = {
+	.ry = 0x0332, .gy = 0x012d, .by = 0x07d3, .ay = 0x0113,
+	.ru = 0x0745, .gu = 0x053f, .bu = 0x05e1, .au = 0x0200,
+	.rv = 0x0353, .gv = 0x031c, .bv = 0x06dc, .av = 0x0200,
+};
+
+static const struct video_levels pal_levels_composite = {
+	.blank = 237, .black = 237, .burst = 118,
+};
+
+static const struct color_conversion pal_csc_svideo = {
+	.ry = 0x0332, .gy = 0x012d, .by = 0x07d3, .ay = 0x0145,
+	.ru = 0x0780, .gu = 0x0579, .bu = 0x031c, .au = 0x0200,
+	.rv = 0x0390, .gv = 0x034f, .bv = 0x0705, .av = 0x0200,
+};
+
+static const struct video_levels pal_levels_svideo = {
+	.blank = 280, .black = 280, .burst = 139,
+};
+
+static const struct color_conversion pal_m_csc_composite = {
+	.ry = 0x0332, .gy = 0x012d, .by = 0x07d3, .ay = 0x0104,
+	.ru = 0x0733, .gu = 0x052d, .bu = 0x05c7, .au = 0x0200,
+	.rv = 0x0340, .gv = 0x030c, .bv = 0x06d0, .av = 0x0200,
+};
+
+static const struct video_levels pal_m_levels_composite = {
+	.blank = 225, .black = 267, .burst = 113,
+};
+
+static const struct color_conversion pal_m_csc_svideo = {
+	.ry = 0x0332, .gy = 0x012d, .by = 0x07d3, .ay = 0x0133,
+	.ru = 0x076a, .gu = 0x0564, .bu = 0x030d, .au = 0x0200,
+	.rv = 0x037a, .gv = 0x033d, .bv = 0x06f6, .av = 0x0200,
+};
+
+static const struct video_levels pal_m_levels_svideo = {
+	.blank = 266, .black = 316, .burst = 133,
+};
+
+static const struct color_conversion pal_n_csc_composite = {
+	.ry = 0x0332, .gy = 0x012d, .by = 0x07d3, .ay = 0x0104,
+	.ru = 0x0733, .gu = 0x052d, .bu = 0x05c7, .au = 0x0200,
+	.rv = 0x0340, .gv = 0x030c, .bv = 0x06d0, .av = 0x0200,
+};
+
+static const struct video_levels pal_n_levels_composite = {
+	.blank = 225, .black = 267, .burst = 118,
+};
+
+static const struct color_conversion pal_n_csc_svideo = {
+	.ry = 0x0332, .gy = 0x012d, .by = 0x07d3, .ay = 0x0133,
+	.ru = 0x076a, .gu = 0x0564, .bu = 0x030d, .au = 0x0200,
+	.rv = 0x037a, .gv = 0x033d, .bv = 0x06f6, .av = 0x0200,
+};
+
+static const struct video_levels pal_n_levels_svideo = {
+	.blank = 266, .black = 316, .burst = 139,
+};
+
+/*
+ * Component connections
+ */
+static const struct color_conversion sdtv_csc_yprpb = {
+	.ry = 0x0332, .gy = 0x012d, .by = 0x07d3, .ay = 0x0145,
+	.ru = 0x0559, .gu = 0x0353, .bu = 0x0100, .au = 0x0200,
+	.rv = 0x0100, .gv = 0x03ad, .bv = 0x074d, .av = 0x0200,
+};
+
+static const struct color_conversion hdtv_csc_yprpb = {
+	.ry = 0x05b3, .gy = 0x016e, .by = 0x0728, .ay = 0x0145,
+	.ru = 0x07d5, .gu = 0x038b, .bu = 0x0100, .au = 0x0200,
+	.rv = 0x0100, .gv = 0x03d1, .bv = 0x06bc, .av = 0x0200,
+};
+
+static const struct video_levels component_levels = {
+	.blank = 279, .black = 279, .burst = 0,
+};
+
+
+struct tv_mode {
+	const char *name;
+
+	u32 clock;
+	u16 refresh; /* in millihertz (for precision) */
+	u8 oversample;
+	u8 hsync_end;
+	u16 hblank_start, hblank_end, htotal;
+	bool progressive : 1, trilevel_sync : 1, component_only : 1;
+	u8 vsync_start_f1, vsync_start_f2, vsync_len;
+	bool veq_ena : 1;
+	u8 veq_start_f1, veq_start_f2, veq_len;
+	u8 vi_end_f1, vi_end_f2;
+	u16 nbr_end;
+	bool burst_ena : 1;
+	u8 hburst_start, hburst_len;
+	u8 vburst_start_f1;
+	u16 vburst_end_f1;
+	u8 vburst_start_f2;
+	u16 vburst_end_f2;
+	u8 vburst_start_f3;
+	u16 vburst_end_f3;
+	u8 vburst_start_f4;
+	u16 vburst_end_f4;
+	/*
+	 * subcarrier programming
+	 */
+	u16 dda2_size, dda3_size;
+	u8 dda1_inc;
+	u16 dda2_inc, dda3_inc;
+	u32 sc_reset;
+	bool pal_burst : 1;
+	/*
+	 * blank/black levels
+	 */
+	const struct video_levels *composite_levels, *svideo_levels;
+	const struct color_conversion *composite_color, *svideo_color;
+	const u32 *filter_table;
+};
+
+
+/*
+ * Sub carrier DDA
+ *
+ *  I think this works as follows:
+ *
+ *  subcarrier freq = pixel_clock * (dda1_inc + dda2_inc / dda2_size) / 4096
+ *
+ * Presumably, when dda3 is added in, it gets to adjust the dda2_inc value
+ *
+ * So,
+ *  dda1_ideal = subcarrier/pixel * 4096
+ *  dda1_inc = floor (dda1_ideal)
+ *  dda2 = dda1_ideal - dda1_inc
+ *
+ *  then pick a ratio for dda2 that gives the closest approximation. If
+ *  you can't get close enough, you can play with dda3 as well. This
+ *  seems likely to happen when dda2 is small as the jumps would be larger
+ *
+ * To invert this,
+ *
+ *  pixel_clock = subcarrier * 4096 / (dda1_inc + dda2_inc / dda2_size)
+ *
+ * The constants below were all computed using a 107.520MHz clock
+ */
+
+/*
+ * Register programming values for TV modes.
+ *
+ * These values account for -1s required.
+ */
+static const struct tv_mode tv_modes[] = {
+	{
+		.name		= "NTSC-M",
+		.clock		= 108000,
+		.refresh	= 59940,
+		.oversample	= 8,
+		.component_only = false,
+		/* 525 Lines, 60 Fields, 15.734KHz line, Sub-Carrier 3.580MHz */
+
+		.hsync_end	= 64,		    .hblank_end		= 124,
+		.hblank_start	= 836,		    .htotal		= 857,
+
+		.progressive	= false,	    .trilevel_sync = false,
+
+		.vsync_start_f1	= 6,		    .vsync_start_f2	= 7,
+		.vsync_len	= 6,
+
+		.veq_ena	= true,		    .veq_start_f1	= 0,
+		.veq_start_f2	= 1,		    .veq_len		= 18,
+
+		.vi_end_f1	= 20,		    .vi_end_f2		= 21,
+		.nbr_end	= 240,
+
+		.burst_ena	= true,
+		.hburst_start	= 72,		    .hburst_len		= 34,
+		.vburst_start_f1 = 9,		    .vburst_end_f1	= 240,
+		.vburst_start_f2 = 10,		    .vburst_end_f2	= 240,
+		.vburst_start_f3 = 9,		    .vburst_end_f3	= 240,
+		.vburst_start_f4 = 10,		    .vburst_end_f4	= 240,
+
+		/* desired 3.5800000 actual 3.5800000 clock 107.52 */
+		.dda1_inc	=    135,
+		.dda2_inc	=  20800,	    .dda2_size		=  27456,
+		.dda3_inc	=      0,	    .dda3_size		=      0,
+		.sc_reset	= TV_SC_RESET_EVERY_4,
+		.pal_burst	= false,
+
+		.composite_levels = &ntsc_m_levels_composite,
+		.composite_color = &ntsc_m_csc_composite,
+		.svideo_levels  = &ntsc_m_levels_svideo,
+		.svideo_color = &ntsc_m_csc_svideo,
+
+		.filter_table = filter_table,
+	},
+	{
+		.name		= "NTSC-443",
+		.clock		= 108000,
+		.refresh	= 59940,
+		.oversample	= 8,
+		.component_only = false,
+		/* 525 Lines, 60 Fields, 15.734KHz line, Sub-Carrier 4.43MHz */
+		.hsync_end	= 64,		    .hblank_end		= 124,
+		.hblank_start	= 836,		    .htotal		= 857,
+
+		.progressive	= false,	    .trilevel_sync = false,
+
+		.vsync_start_f1 = 6,		    .vsync_start_f2	= 7,
+		.vsync_len	= 6,
+
+		.veq_ena	= true,		    .veq_start_f1	= 0,
+		.veq_start_f2	= 1,		    .veq_len		= 18,
+
+		.vi_end_f1	= 20,		    .vi_end_f2		= 21,
+		.nbr_end	= 240,
+
+		.burst_ena	= true,
+		.hburst_start	= 72,		    .hburst_len		= 34,
+		.vburst_start_f1 = 9,		    .vburst_end_f1	= 240,
+		.vburst_start_f2 = 10,		    .vburst_end_f2	= 240,
+		.vburst_start_f3 = 9,		    .vburst_end_f3	= 240,
+		.vburst_start_f4 = 10,		    .vburst_end_f4	= 240,
+
+		/* desired 4.4336180 actual 4.4336180 clock 107.52 */
+		.dda1_inc       =    168,
+		.dda2_inc       =   4093,       .dda2_size      =  27456,
+		.dda3_inc       =    310,       .dda3_size      =    525,
+		.sc_reset   = TV_SC_RESET_NEVER,
+		.pal_burst  = false,
+
+		.composite_levels = &ntsc_m_levels_composite,
+		.composite_color = &ntsc_m_csc_composite,
+		.svideo_levels  = &ntsc_m_levels_svideo,
+		.svideo_color = &ntsc_m_csc_svideo,
+
+		.filter_table = filter_table,
+	},
+	{
+		.name		= "NTSC-J",
+		.clock		= 108000,
+		.refresh	= 59940,
+		.oversample	= 8,
+		.component_only = false,
+
+		/* 525 Lines, 60 Fields, 15.734KHz line, Sub-Carrier 3.580MHz */
+		.hsync_end	= 64,		    .hblank_end		= 124,
+		.hblank_start = 836,	    .htotal		= 857,
+
+		.progressive	= false,    .trilevel_sync = false,
+
+		.vsync_start_f1	= 6,	    .vsync_start_f2	= 7,
+		.vsync_len	= 6,
+
+		.veq_ena      = true,	    .veq_start_f1	= 0,
+		.veq_start_f2 = 1,	    .veq_len		= 18,
+
+		.vi_end_f1	= 20,		    .vi_end_f2		= 21,
+		.nbr_end	= 240,
+
+		.burst_ena	= true,
+		.hburst_start	= 72,		    .hburst_len		= 34,
+		.vburst_start_f1 = 9,		    .vburst_end_f1	= 240,
+		.vburst_start_f2 = 10,		    .vburst_end_f2	= 240,
+		.vburst_start_f3 = 9,		    .vburst_end_f3	= 240,
+		.vburst_start_f4 = 10,		    .vburst_end_f4	= 240,
+
+		/* desired 3.5800000 actual 3.5800000 clock 107.52 */
+		.dda1_inc	=    135,
+		.dda2_inc	=  20800,	    .dda2_size		=  27456,
+		.dda3_inc	=      0,	    .dda3_size		=      0,
+		.sc_reset	= TV_SC_RESET_EVERY_4,
+		.pal_burst	= false,
+
+		.composite_levels = &ntsc_j_levels_composite,
+		.composite_color = &ntsc_j_csc_composite,
+		.svideo_levels  = &ntsc_j_levels_svideo,
+		.svideo_color = &ntsc_j_csc_svideo,
+
+		.filter_table = filter_table,
+	},
+	{
+		.name		= "PAL-M",
+		.clock		= 108000,
+		.refresh	= 59940,
+		.oversample	= 8,
+		.component_only = false,
+
+		/* 525 Lines, 60 Fields, 15.734KHz line, Sub-Carrier 3.580MHz */
+		.hsync_end	= 64,		  .hblank_end		= 124,
+		.hblank_start = 836,	  .htotal		= 857,
+
+		.progressive	= false,	    .trilevel_sync = false,
+
+		.vsync_start_f1	= 6,		    .vsync_start_f2	= 7,
+		.vsync_len	= 6,
+
+		.veq_ena	= true,		    .veq_start_f1	= 0,
+		.veq_start_f2	= 1,		    .veq_len		= 18,
+
+		.vi_end_f1	= 20,		    .vi_end_f2		= 21,
+		.nbr_end	= 240,
+
+		.burst_ena	= true,
+		.hburst_start	= 72,		    .hburst_len		= 34,
+		.vburst_start_f1 = 9,		    .vburst_end_f1	= 240,
+		.vburst_start_f2 = 10,		    .vburst_end_f2	= 240,
+		.vburst_start_f3 = 9,		    .vburst_end_f3	= 240,
+		.vburst_start_f4 = 10,		    .vburst_end_f4	= 240,
+
+		/* desired 3.5800000 actual 3.5800000 clock 107.52 */
+		.dda1_inc	=    135,
+		.dda2_inc	=  16704,	    .dda2_size		=  27456,
+		.dda3_inc	=      0,	    .dda3_size		=      0,
+		.sc_reset	= TV_SC_RESET_EVERY_8,
+		.pal_burst  = true,
+
+		.composite_levels = &pal_m_levels_composite,
+		.composite_color = &pal_m_csc_composite,
+		.svideo_levels  = &pal_m_levels_svideo,
+		.svideo_color = &pal_m_csc_svideo,
+
+		.filter_table = filter_table,
+	},
+	{
+		/* 625 Lines, 50 Fields, 15.625KHz line, Sub-Carrier 4.434MHz */
+		.name	    = "PAL-N",
+		.clock		= 108000,
+		.refresh	= 50000,
+		.oversample	= 8,
+		.component_only = false,
+
+		.hsync_end	= 64,		    .hblank_end		= 128,
+		.hblank_start = 844,	    .htotal		= 863,
+
+		.progressive  = false,    .trilevel_sync = false,
+
+
+		.vsync_start_f1	= 6,	   .vsync_start_f2	= 7,
+		.vsync_len	= 6,
+
+		.veq_ena	= true,		    .veq_start_f1	= 0,
+		.veq_start_f2	= 1,		    .veq_len		= 18,
+
+		.vi_end_f1	= 24,		    .vi_end_f2		= 25,
+		.nbr_end	= 286,
+
+		.burst_ena	= true,
+		.hburst_start = 73,	    .hburst_len		= 34,
+		.vburst_start_f1 = 8,	    .vburst_end_f1	= 285,
+		.vburst_start_f2 = 8,	    .vburst_end_f2	= 286,
+		.vburst_start_f3 = 9,	    .vburst_end_f3	= 286,
+		.vburst_start_f4 = 9,	    .vburst_end_f4	= 285,
+
+
+		/* desired 4.4336180 actual 4.4336180 clock 107.52 */
+		.dda1_inc       =    135,
+		.dda2_inc       =  23578,       .dda2_size      =  27648,
+		.dda3_inc       =    134,       .dda3_size      =    625,
+		.sc_reset   = TV_SC_RESET_EVERY_8,
+		.pal_burst  = true,
+
+		.composite_levels = &pal_n_levels_composite,
+		.composite_color = &pal_n_csc_composite,
+		.svideo_levels  = &pal_n_levels_svideo,
+		.svideo_color = &pal_n_csc_svideo,
+
+		.filter_table = filter_table,
+	},
+	{
+		/* 625 Lines, 50 Fields, 15.625KHz line, Sub-Carrier 4.434MHz */
+		.name	    = "PAL",
+		.clock		= 108000,
+		.refresh	= 50000,
+		.oversample	= 8,
+		.component_only = false,
+
+		.hsync_end	= 64,		    .hblank_end		= 142,
+		.hblank_start	= 844,	    .htotal		= 863,
+
+		.progressive	= false,    .trilevel_sync = false,
+
+		.vsync_start_f1	= 5,	    .vsync_start_f2	= 6,
+		.vsync_len	= 5,
+
+		.veq_ena	= true,	    .veq_start_f1	= 0,
+		.veq_start_f2	= 1,	    .veq_len		= 15,
+
+		.vi_end_f1	= 24,		    .vi_end_f2		= 25,
+		.nbr_end	= 286,
+
+		.burst_ena	= true,
+		.hburst_start	= 73,		    .hburst_len		= 32,
+		.vburst_start_f1 = 8,		    .vburst_end_f1	= 285,
+		.vburst_start_f2 = 8,		    .vburst_end_f2	= 286,
+		.vburst_start_f3 = 9,		    .vburst_end_f3	= 286,
+		.vburst_start_f4 = 9,		    .vburst_end_f4	= 285,
+
+		/* desired 4.4336180 actual 4.4336180 clock 107.52 */
+		.dda1_inc       =    168,
+		.dda2_inc       =   4122,       .dda2_size      =  27648,
+		.dda3_inc       =     67,       .dda3_size      =    625,
+		.sc_reset   = TV_SC_RESET_EVERY_8,
+		.pal_burst  = true,
+
+		.composite_levels = &pal_levels_composite,
+		.composite_color = &pal_csc_composite,
+		.svideo_levels  = &pal_levels_svideo,
+		.svideo_color = &pal_csc_svideo,
+
+		.filter_table = filter_table,
+	},
+	{
+		.name       = "480p",
+		.clock		= 108000,
+		.refresh	= 59940,
+		.oversample     = 4,
+		.component_only = true,
+
+		.hsync_end      = 64,               .hblank_end         = 122,
+		.hblank_start   = 842,              .htotal             = 857,
+
+		.progressive    = true,		    .trilevel_sync = false,
+
+		.vsync_start_f1 = 12,               .vsync_start_f2     = 12,
+		.vsync_len      = 12,
+
+		.veq_ena        = false,
+
+		.vi_end_f1      = 44,               .vi_end_f2          = 44,
+		.nbr_end        = 479,
+
+		.burst_ena      = false,
+
+		.filter_table = filter_table,
+	},
+	{
+		.name       = "576p",
+		.clock		= 108000,
+		.refresh	= 50000,
+		.oversample     = 4,
+		.component_only = true,
+
+		.hsync_end      = 64,               .hblank_end         = 139,
+		.hblank_start   = 859,              .htotal             = 863,
+
+		.progressive    = true,		    .trilevel_sync = false,
+
+		.vsync_start_f1 = 10,               .vsync_start_f2     = 10,
+		.vsync_len      = 10,
+
+		.veq_ena        = false,
+
+		.vi_end_f1      = 48,               .vi_end_f2          = 48,
+		.nbr_end        = 575,
+
+		.burst_ena      = false,
+
+		.filter_table = filter_table,
+	},
+	{
+		.name       = "720p@60Hz",
+		.clock		= 148500,
+		.refresh	= 60000,
+		.oversample     = 2,
+		.component_only = true,
+
+		.hsync_end      = 80,               .hblank_end         = 300,
+		.hblank_start   = 1580,             .htotal             = 1649,
+
+		.progressive	= true,		    .trilevel_sync = true,
+
+		.vsync_start_f1 = 10,               .vsync_start_f2     = 10,
+		.vsync_len      = 10,
+
+		.veq_ena        = false,
+
+		.vi_end_f1      = 29,               .vi_end_f2          = 29,
+		.nbr_end        = 719,
+
+		.burst_ena      = false,
+
+		.filter_table = filter_table,
+	},
+	{
+		.name       = "720p@50Hz",
+		.clock		= 148500,
+		.refresh	= 50000,
+		.oversample     = 2,
+		.component_only = true,
+
+		.hsync_end      = 80,               .hblank_end         = 300,
+		.hblank_start   = 1580,             .htotal             = 1979,
+
+		.progressive	= true,		    .trilevel_sync = true,
+
+		.vsync_start_f1 = 10,               .vsync_start_f2     = 10,
+		.vsync_len      = 10,
+
+		.veq_ena        = false,
+
+		.vi_end_f1      = 29,               .vi_end_f2          = 29,
+		.nbr_end        = 719,
+
+		.burst_ena      = false,
+
+		.filter_table = filter_table,
+	},
+	{
+		.name       = "1080i@50Hz",
+		.clock		= 148500,
+		.refresh	= 50000,
+		.oversample     = 2,
+		.component_only = true,
+
+		.hsync_end      = 88,               .hblank_end         = 235,
+		.hblank_start   = 2155,             .htotal             = 2639,
+
+		.progressive	= false,	  .trilevel_sync = true,
+
+		.vsync_start_f1 = 4,              .vsync_start_f2     = 5,
+		.vsync_len      = 10,
+
+		.veq_ena	= true,	    .veq_start_f1	= 4,
+		.veq_start_f2   = 4,	    .veq_len		= 10,
+
+
+		.vi_end_f1      = 21,           .vi_end_f2          = 22,
+		.nbr_end        = 539,
+
+		.burst_ena      = false,
+
+		.filter_table = filter_table,
+	},
+	{
+		.name       = "1080i@60Hz",
+		.clock		= 148500,
+		.refresh	= 60000,
+		.oversample     = 2,
+		.component_only = true,
+
+		.hsync_end      = 88,               .hblank_end         = 235,
+		.hblank_start   = 2155,             .htotal             = 2199,
+
+		.progressive	= false,	    .trilevel_sync = true,
+
+		.vsync_start_f1 = 4,               .vsync_start_f2     = 5,
+		.vsync_len      = 10,
+
+		.veq_ena	= true,		    .veq_start_f1	= 4,
+		.veq_start_f2	= 4,		    .veq_len		= 10,
+
+
+		.vi_end_f1      = 21,               .vi_end_f2          = 22,
+		.nbr_end        = 539,
+
+		.burst_ena      = false,
+
+		.filter_table = filter_table,
+	},
+
+	{
+		.name       = "1080p@30Hz",
+		.clock		= 148500,
+		.refresh	= 30000,
+		.oversample     = 2,
+		.component_only = true,
+
+		.hsync_end      = 88,               .hblank_end         = 235,
+		.hblank_start   = 2155,             .htotal             = 2199,
+
+		.progressive	= true,		    .trilevel_sync = true,
+
+		.vsync_start_f1 = 8,               .vsync_start_f2     = 8,
+		.vsync_len      = 10,
+
+		.veq_ena	= false,	.veq_start_f1	= 0,
+		.veq_start_f2	= 0,		    .veq_len		= 0,
+
+		.vi_end_f1      = 44,               .vi_end_f2          = 44,
+		.nbr_end        = 1079,
+
+		.burst_ena      = false,
+
+		.filter_table = filter_table,
+	},
+
+	{
+		.name       = "1080p@50Hz",
+		.clock		= 148500,
+		.refresh	= 50000,
+		.oversample     = 1,
+		.component_only = true,
+
+		.hsync_end      = 88,               .hblank_end         = 235,
+		.hblank_start   = 2155,             .htotal             = 2639,
+
+		.progressive	= true,		    .trilevel_sync = true,
+
+		.vsync_start_f1 = 8,               .vsync_start_f2     = 8,
+		.vsync_len      = 10,
+
+		.veq_ena	= false,	.veq_start_f1	= 0,
+		.veq_start_f2	= 0,		    .veq_len		= 0,
+
+		.vi_end_f1      = 44,               .vi_end_f2          = 44,
+		.nbr_end        = 1079,
+
+		.burst_ena      = false,
+
+		.filter_table = filter_table,
+	},
+
+	{
+		.name       = "1080p@60Hz",
+		.clock		= 148500,
+		.refresh	= 60000,
+		.oversample     = 1,
+		.component_only = true,
+
+		.hsync_end      = 88,               .hblank_end         = 235,
+		.hblank_start   = 2155,             .htotal             = 2199,
+
+		.progressive	= true,		    .trilevel_sync = true,
+
+		.vsync_start_f1 = 8,               .vsync_start_f2     = 8,
+		.vsync_len      = 10,
+
+		.veq_ena	= false,		    .veq_start_f1	= 0,
+		.veq_start_f2	= 0,		    .veq_len		= 0,
+
+		.vi_end_f1      = 44,               .vi_end_f2          = 44,
+		.nbr_end        = 1079,
+
+		.burst_ena      = false,
+
+		.filter_table = filter_table,
+	},
+};
+
+struct intel_tv_connector_state {
+	struct drm_connector_state base;
+
+	/*
+	 * May need to override the user margins for
+	 * gen3 >1024 wide source vertical centering.
+	 */
+	struct {
+		u16 top, bottom;
+	} margins;
+
+	bool bypass_vfilter;
+};
+
+#define to_intel_tv_connector_state(x) container_of(x, struct intel_tv_connector_state, base)
+
+static struct drm_connector_state *
+intel_tv_connector_duplicate_state(struct drm_connector *connector)
+{
+	struct intel_tv_connector_state *state;
+
+	state = kmemdup(connector->state, sizeof(*state), GFP_KERNEL);
+	if (!state)
+		return NULL;
+
+	__drm_atomic_helper_connector_duplicate_state(connector, &state->base);
+	return &state->base;
+}
+
+static struct intel_tv *enc_to_tv(struct intel_encoder *encoder)
+{
+	return container_of(encoder, struct intel_tv, base);
+}
+
+static struct intel_tv *intel_attached_tv(struct intel_connector *connector)
+{
+	return enc_to_tv(intel_attached_encoder(connector));
+}
+
+static bool
+intel_tv_get_hw_state(struct intel_encoder *encoder, enum pipe *pipe)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	u32 tmp = intel_de_read(dev_priv, TV_CTL);
+
+	*pipe = (tmp & TV_ENC_PIPE_SEL_MASK) >> TV_ENC_PIPE_SEL_SHIFT;
+
+	return tmp & TV_ENC_ENABLE;
+}
+
+static void
+intel_enable_tv(struct intel_atomic_state *state,
+		struct intel_encoder *encoder,
+		const struct intel_crtc_state *pipe_config,
+		const struct drm_connector_state *conn_state)
+{
+	struct drm_device *dev = encoder->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+
+	/* Prevents vblank waits from timing out in intel_tv_detect_type() */
+	intel_crtc_wait_for_next_vblank(to_intel_crtc(pipe_config->uapi.crtc));
+
+	intel_de_write(dev_priv, TV_CTL,
+		       intel_de_read(dev_priv, TV_CTL) | TV_ENC_ENABLE);
+}
+
+static void
+intel_disable_tv(struct intel_atomic_state *state,
+		 struct intel_encoder *encoder,
+		 const struct intel_crtc_state *old_crtc_state,
+		 const struct drm_connector_state *old_conn_state)
+{
+	struct drm_device *dev = encoder->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+
+	intel_de_write(dev_priv, TV_CTL,
+		       intel_de_read(dev_priv, TV_CTL) & ~TV_ENC_ENABLE);
+}
+
+static const struct tv_mode *intel_tv_mode_find(const struct drm_connector_state *conn_state)
+{
+	int format = conn_state->tv.mode;
+
+	return &tv_modes[format];
+}
+
+static enum drm_mode_status
+intel_tv_mode_valid(struct drm_connector *connector,
+		    struct drm_display_mode *mode)
+{
+	struct drm_i915_private *i915 = to_i915(connector->dev);
+	const struct tv_mode *tv_mode = intel_tv_mode_find(connector->state);
+	int max_dotclk = i915->max_dotclk_freq;
+	enum drm_mode_status status;
+
+	status = intel_cpu_transcoder_mode_valid(i915, mode);
+	if (status != MODE_OK)
+		return status;
+
+	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
+		return MODE_NO_DBLESCAN;
+
+	if (mode->clock > max_dotclk)
+		return MODE_CLOCK_HIGH;
+
+	/* Ensure TV refresh is close to desired refresh */
+	if (abs(tv_mode->refresh - drm_mode_vrefresh(mode) * 1000) >= 1000)
+		return MODE_CLOCK_RANGE;
+
+	return MODE_OK;
+}
+
+static int
+intel_tv_mode_vdisplay(const struct tv_mode *tv_mode)
+{
+	if (tv_mode->progressive)
+		return tv_mode->nbr_end + 1;
+	else
+		return 2 * (tv_mode->nbr_end + 1);
+}
+
+static void
+intel_tv_mode_to_mode(struct drm_display_mode *mode,
+		      const struct tv_mode *tv_mode,
+		      int clock)
+{
+	mode->clock = clock / (tv_mode->oversample >> !tv_mode->progressive);
+
+	/*
+	 * tv_mode horizontal timings:
+	 *
+	 * hsync_end
+	 *    | hblank_end
+	 *    |    | hblank_start
+	 *    |    |       | htotal
+	 *    |     _______    |
+	 *     ____/       \___
+	 * \__/                \
+	 */
+	mode->hdisplay =
+		tv_mode->hblank_start - tv_mode->hblank_end;
+	mode->hsync_start = mode->hdisplay +
+		tv_mode->htotal - tv_mode->hblank_start;
+	mode->hsync_end = mode->hsync_start +
+		tv_mode->hsync_end;
+	mode->htotal = tv_mode->htotal + 1;
+
+	/*
+	 * tv_mode vertical timings:
+	 *
+	 * vsync_start
+	 *    | vsync_end
+	 *    |  | vi_end nbr_end
+	 *    |  |    |       |
+	 *    |  |     _______
+	 * \__    ____/       \
+	 *    \__/
+	 */
+	mode->vdisplay = intel_tv_mode_vdisplay(tv_mode);
+	if (tv_mode->progressive) {
+		mode->vsync_start = mode->vdisplay +
+			tv_mode->vsync_start_f1 + 1;
+		mode->vsync_end = mode->vsync_start +
+			tv_mode->vsync_len;
+		mode->vtotal = mode->vdisplay +
+			tv_mode->vi_end_f1 + 1;
+	} else {
+		mode->vsync_start = mode->vdisplay +
+			tv_mode->vsync_start_f1 + 1 +
+			tv_mode->vsync_start_f2 + 1;
+		mode->vsync_end = mode->vsync_start +
+			2 * tv_mode->vsync_len;
+		mode->vtotal = mode->vdisplay +
+			tv_mode->vi_end_f1 + 1 +
+			tv_mode->vi_end_f2 + 1;
+	}
+
+	/* TV has it's own notion of sync and other mode flags, so clear them. */
+	mode->flags = 0;
+
+	snprintf(mode->name, sizeof(mode->name),
+		 "%dx%d%c (%s)",
+		 mode->hdisplay, mode->vdisplay,
+		 tv_mode->progressive ? 'p' : 'i',
+		 tv_mode->name);
+}
+
+static void intel_tv_scale_mode_horiz(struct drm_display_mode *mode,
+				      int hdisplay, int left_margin,
+				      int right_margin)
+{
+	int hsync_start = mode->hsync_start - mode->hdisplay + right_margin;
+	int hsync_end = mode->hsync_end - mode->hdisplay + right_margin;
+	int new_htotal = mode->htotal * hdisplay /
+		(mode->hdisplay - left_margin - right_margin);
+
+	mode->clock = mode->clock * new_htotal / mode->htotal;
+
+	mode->hdisplay = hdisplay;
+	mode->hsync_start = hdisplay + hsync_start * new_htotal / mode->htotal;
+	mode->hsync_end = hdisplay + hsync_end * new_htotal / mode->htotal;
+	mode->htotal = new_htotal;
+}
+
+static void intel_tv_scale_mode_vert(struct drm_display_mode *mode,
+				     int vdisplay, int top_margin,
+				     int bottom_margin)
+{
+	int vsync_start = mode->vsync_start - mode->vdisplay + bottom_margin;
+	int vsync_end = mode->vsync_end - mode->vdisplay + bottom_margin;
+	int new_vtotal = mode->vtotal * vdisplay /
+		(mode->vdisplay - top_margin - bottom_margin);
+
+	mode->clock = mode->clock * new_vtotal / mode->vtotal;
+
+	mode->vdisplay = vdisplay;
+	mode->vsync_start = vdisplay + vsync_start * new_vtotal / mode->vtotal;
+	mode->vsync_end = vdisplay + vsync_end * new_vtotal / mode->vtotal;
+	mode->vtotal = new_vtotal;
+}
+
+static void
+intel_tv_get_config(struct intel_encoder *encoder,
+		    struct intel_crtc_state *pipe_config)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct drm_display_mode *adjusted_mode =
+		&pipe_config->hw.adjusted_mode;
+	struct drm_display_mode mode = {};
+	u32 tv_ctl, hctl1, hctl3, vctl1, vctl2, tmp;
+	struct tv_mode tv_mode = {};
+	int hdisplay = adjusted_mode->crtc_hdisplay;
+	int vdisplay = adjusted_mode->crtc_vdisplay;
+	int xsize, ysize, xpos, ypos;
+
+	pipe_config->output_types |= BIT(INTEL_OUTPUT_TVOUT);
+
+	tv_ctl = intel_de_read(dev_priv, TV_CTL);
+	hctl1 = intel_de_read(dev_priv, TV_H_CTL_1);
+	hctl3 = intel_de_read(dev_priv, TV_H_CTL_3);
+	vctl1 = intel_de_read(dev_priv, TV_V_CTL_1);
+	vctl2 = intel_de_read(dev_priv, TV_V_CTL_2);
+
+	tv_mode.htotal = (hctl1 & TV_HTOTAL_MASK) >> TV_HTOTAL_SHIFT;
+	tv_mode.hsync_end = (hctl1 & TV_HSYNC_END_MASK) >> TV_HSYNC_END_SHIFT;
+
+	tv_mode.hblank_start = (hctl3 & TV_HBLANK_START_MASK) >> TV_HBLANK_START_SHIFT;
+	tv_mode.hblank_end = (hctl3 & TV_HSYNC_END_MASK) >> TV_HBLANK_END_SHIFT;
+
+	tv_mode.nbr_end = (vctl1 & TV_NBR_END_MASK) >> TV_NBR_END_SHIFT;
+	tv_mode.vi_end_f1 = (vctl1 & TV_VI_END_F1_MASK) >> TV_VI_END_F1_SHIFT;
+	tv_mode.vi_end_f2 = (vctl1 & TV_VI_END_F2_MASK) >> TV_VI_END_F2_SHIFT;
+
+	tv_mode.vsync_len = (vctl2 & TV_VSYNC_LEN_MASK) >> TV_VSYNC_LEN_SHIFT;
+	tv_mode.vsync_start_f1 = (vctl2 & TV_VSYNC_START_F1_MASK) >> TV_VSYNC_START_F1_SHIFT;
+	tv_mode.vsync_start_f2 = (vctl2 & TV_VSYNC_START_F2_MASK) >> TV_VSYNC_START_F2_SHIFT;
+
+	tv_mode.clock = pipe_config->port_clock;
+
+	tv_mode.progressive = tv_ctl & TV_PROGRESSIVE;
+
+	switch (tv_ctl & TV_OVERSAMPLE_MASK) {
+	case TV_OVERSAMPLE_8X:
+		tv_mode.oversample = 8;
+		break;
+	case TV_OVERSAMPLE_4X:
+		tv_mode.oversample = 4;
+		break;
+	case TV_OVERSAMPLE_2X:
+		tv_mode.oversample = 2;
+		break;
+	default:
+		tv_mode.oversample = 1;
+		break;
+	}
+
+	tmp = intel_de_read(dev_priv, TV_WIN_POS);
+	xpos = tmp >> 16;
+	ypos = tmp & 0xffff;
+
+	tmp = intel_de_read(dev_priv, TV_WIN_SIZE);
+	xsize = tmp >> 16;
+	ysize = tmp & 0xffff;
+
+	intel_tv_mode_to_mode(&mode, &tv_mode, pipe_config->port_clock);
+
+	drm_dbg_kms(&dev_priv->drm, "TV mode: " DRM_MODE_FMT "\n",
+		    DRM_MODE_ARG(&mode));
+
+	intel_tv_scale_mode_horiz(&mode, hdisplay,
+				  xpos, mode.hdisplay - xsize - xpos);
+	intel_tv_scale_mode_vert(&mode, vdisplay,
+				 ypos, mode.vdisplay - ysize - ypos);
+
+	adjusted_mode->crtc_clock = mode.clock;
+	if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE)
+		adjusted_mode->crtc_clock /= 2;
+
+	/* pixel counter doesn't work on i965gm TV output */
+	if (IS_I965GM(dev_priv))
+		pipe_config->mode_flags |=
+			I915_MODE_FLAG_USE_SCANLINE_COUNTER;
+}
+
+static bool intel_tv_source_too_wide(struct drm_i915_private *dev_priv,
+				     int hdisplay)
+{
+	return DISPLAY_VER(dev_priv) == 3 && hdisplay > 1024;
+}
+
+static bool intel_tv_vert_scaling(const struct drm_display_mode *tv_mode,
+				  const struct drm_connector_state *conn_state,
+				  int vdisplay)
+{
+	return tv_mode->crtc_vdisplay -
+		conn_state->tv.margins.top -
+		conn_state->tv.margins.bottom !=
+		vdisplay;
+}
+
+static int
+intel_tv_compute_config(struct intel_encoder *encoder,
+			struct intel_crtc_state *pipe_config,
+			struct drm_connector_state *conn_state)
+{
+	struct intel_atomic_state *state =
+		to_intel_atomic_state(pipe_config->uapi.state);
+	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_tv_connector_state *tv_conn_state =
+		to_intel_tv_connector_state(conn_state);
+	const struct tv_mode *tv_mode = intel_tv_mode_find(conn_state);
+	struct drm_display_mode *adjusted_mode =
+		&pipe_config->hw.adjusted_mode;
+	int hdisplay = adjusted_mode->crtc_hdisplay;
+	int vdisplay = adjusted_mode->crtc_vdisplay;
+	int ret;
+
+	if (!tv_mode)
+		return -EINVAL;
+
+	if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)
+		return -EINVAL;
+
+	pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
+
+	drm_dbg_kms(&dev_priv->drm, "forcing bpc to 8 for TV\n");
+	pipe_config->pipe_bpp = 8*3;
+
+	pipe_config->port_clock = tv_mode->clock;
+
+	ret = intel_dpll_crtc_compute_clock(state, crtc);
+	if (ret)
+		return ret;
+
+	pipe_config->clock_set = true;
+
+	intel_tv_mode_to_mode(adjusted_mode, tv_mode, pipe_config->port_clock);
+	drm_mode_set_crtcinfo(adjusted_mode, 0);
+
+	if (intel_tv_source_too_wide(dev_priv, hdisplay) ||
+	    !intel_tv_vert_scaling(adjusted_mode, conn_state, vdisplay)) {
+		int extra, top, bottom;
+
+		extra = adjusted_mode->crtc_vdisplay - vdisplay;
+
+		if (extra < 0) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "No vertical scaling for >1024 pixel wide modes\n");
+			return -EINVAL;
+		}
+
+		/* Need to turn off the vertical filter and center the image */
+
+		/* Attempt to maintain the relative sizes of the margins */
+		top = conn_state->tv.margins.top;
+		bottom = conn_state->tv.margins.bottom;
+
+		if (top + bottom)
+			top = extra * top / (top + bottom);
+		else
+			top = extra / 2;
+		bottom = extra - top;
+
+		tv_conn_state->margins.top = top;
+		tv_conn_state->margins.bottom = bottom;
+
+		tv_conn_state->bypass_vfilter = true;
+
+		if (!tv_mode->progressive) {
+			adjusted_mode->clock /= 2;
+			adjusted_mode->crtc_clock /= 2;
+			adjusted_mode->flags |= DRM_MODE_FLAG_INTERLACE;
+		}
+	} else {
+		tv_conn_state->margins.top = conn_state->tv.margins.top;
+		tv_conn_state->margins.bottom = conn_state->tv.margins.bottom;
+
+		tv_conn_state->bypass_vfilter = false;
+	}
+
+	drm_dbg_kms(&dev_priv->drm, "TV mode: " DRM_MODE_FMT "\n",
+		    DRM_MODE_ARG(adjusted_mode));
+
+	/*
+	 * The pipe scanline counter behaviour looks as follows when
+	 * using the TV encoder:
+	 *
+	 * time ->
+	 *
+	 * dsl=vtotal-1       |             |
+	 *                   ||            ||
+	 *               ___| |        ___| |
+	 *              /     |       /     |
+	 *             /      |      /      |
+	 * dsl=0   ___/       |_____/       |
+	 *        | | |  |  | |
+	 *         ^ ^ ^   ^ ^
+	 *         | | |   | pipe vblank/first part of tv vblank
+	 *         | | |   bottom margin
+	 *         | | active
+	 *         | top margin
+	 *         remainder of tv vblank
+	 *
+	 * When the TV encoder is used the pipe wants to run faster
+	 * than expected rate. During the active portion the TV
+	 * encoder stalls the pipe every few lines to keep it in
+	 * check. When the TV encoder reaches the bottom margin the
+	 * pipe simply stops. Once we reach the TV vblank the pipe is
+	 * no longer stalled and it runs at the max rate (apparently
+	 * oversample clock on gen3, cdclk on gen4). Once the pipe
+	 * reaches the pipe vtotal the pipe stops for the remainder
+	 * of the TV vblank/top margin. The pipe starts up again when
+	 * the TV encoder exits the top margin.
+	 *
+	 * To avoid huge hassles for vblank timestamping we scale
+	 * the pipe timings as if the pipe always runs at the average
+	 * rate it maintains during the active period. This also
+	 * gives us a reasonable guesstimate as to the pixel rate.
+	 * Due to the variation in the actual pipe speed the scanline
+	 * counter will give us slightly erroneous results during the
+	 * TV vblank/margins. But since vtotal was selected such that
+	 * it matches the average rate of the pipe during the active
+	 * portion the error shouldn't cause any serious grief to
+	 * vblank timestamps.
+	 *
+	 * For posterity here is the empirically derived formula
+	 * that gives us the maximum length of the pipe vblank
+	 * we can use without causing display corruption. Following
+	 * this would allow us to have a ticking scanline counter
+	 * everywhere except during the bottom margin (there the
+	 * pipe always stops). Ie. this would eliminate the second
+	 * flat portion of the above graph. However this would also
+	 * complicate vblank timestamping as the pipe vtotal would
+	 * no longer match the average rate the pipe runs at during
+	 * the active portion. Hence following this formula seems
+	 * more trouble that it's worth.
+	 *
+	 * if (GRAPHICS_VER(dev_priv) == 4) {
+	 *	num = cdclk * (tv_mode->oversample >> !tv_mode->progressive);
+	 *	den = tv_mode->clock;
+	 * } else {
+	 *	num = tv_mode->oversample >> !tv_mode->progressive;
+	 *	den = 1;
+	 * }
+	 * max_pipe_vblank_len ~=
+	 *	(num * tv_htotal * (tv_vblank_len + top_margin)) /
+	 *	(den * pipe_htotal);
+	 */
+	intel_tv_scale_mode_horiz(adjusted_mode, hdisplay,
+				  conn_state->tv.margins.left,
+				  conn_state->tv.margins.right);
+	intel_tv_scale_mode_vert(adjusted_mode, vdisplay,
+				 tv_conn_state->margins.top,
+				 tv_conn_state->margins.bottom);
+	drm_mode_set_crtcinfo(adjusted_mode, 0);
+	adjusted_mode->name[0] = '\0';
+
+	/* pixel counter doesn't work on i965gm TV output */
+	if (IS_I965GM(dev_priv))
+		pipe_config->mode_flags |=
+			I915_MODE_FLAG_USE_SCANLINE_COUNTER;
+
+	return 0;
+}
+
+static void
+set_tv_mode_timings(struct drm_i915_private *dev_priv,
+		    const struct tv_mode *tv_mode,
+		    bool burst_ena)
+{
+	u32 hctl1, hctl2, hctl3;
+	u32 vctl1, vctl2, vctl3, vctl4, vctl5, vctl6, vctl7;
+
+	hctl1 = (tv_mode->hsync_end << TV_HSYNC_END_SHIFT) |
+		(tv_mode->htotal << TV_HTOTAL_SHIFT);
+
+	hctl2 = (tv_mode->hburst_start << 16) |
+		(tv_mode->hburst_len << TV_HBURST_LEN_SHIFT);
+
+	if (burst_ena)
+		hctl2 |= TV_BURST_ENA;
+
+	hctl3 = (tv_mode->hblank_start << TV_HBLANK_START_SHIFT) |
+		(tv_mode->hblank_end << TV_HBLANK_END_SHIFT);
+
+	vctl1 = (tv_mode->nbr_end << TV_NBR_END_SHIFT) |
+		(tv_mode->vi_end_f1 << TV_VI_END_F1_SHIFT) |
+		(tv_mode->vi_end_f2 << TV_VI_END_F2_SHIFT);
+
+	vctl2 = (tv_mode->vsync_len << TV_VSYNC_LEN_SHIFT) |
+		(tv_mode->vsync_start_f1 << TV_VSYNC_START_F1_SHIFT) |
+		(tv_mode->vsync_start_f2 << TV_VSYNC_START_F2_SHIFT);
+
+	vctl3 = (tv_mode->veq_len << TV_VEQ_LEN_SHIFT) |
+		(tv_mode->veq_start_f1 << TV_VEQ_START_F1_SHIFT) |
+		(tv_mode->veq_start_f2 << TV_VEQ_START_F2_SHIFT);
+
+	if (tv_mode->veq_ena)
+		vctl3 |= TV_EQUAL_ENA;
+
+	vctl4 = (tv_mode->vburst_start_f1 << TV_VBURST_START_F1_SHIFT) |
+		(tv_mode->vburst_end_f1 << TV_VBURST_END_F1_SHIFT);
+
+	vctl5 = (tv_mode->vburst_start_f2 << TV_VBURST_START_F2_SHIFT) |
+		(tv_mode->vburst_end_f2 << TV_VBURST_END_F2_SHIFT);
+
+	vctl6 = (tv_mode->vburst_start_f3 << TV_VBURST_START_F3_SHIFT) |
+		(tv_mode->vburst_end_f3 << TV_VBURST_END_F3_SHIFT);
+
+	vctl7 = (tv_mode->vburst_start_f4 << TV_VBURST_START_F4_SHIFT) |
+		(tv_mode->vburst_end_f4 << TV_VBURST_END_F4_SHIFT);
+
+	intel_de_write(dev_priv, TV_H_CTL_1, hctl1);
+	intel_de_write(dev_priv, TV_H_CTL_2, hctl2);
+	intel_de_write(dev_priv, TV_H_CTL_3, hctl3);
+	intel_de_write(dev_priv, TV_V_CTL_1, vctl1);
+	intel_de_write(dev_priv, TV_V_CTL_2, vctl2);
+	intel_de_write(dev_priv, TV_V_CTL_3, vctl3);
+	intel_de_write(dev_priv, TV_V_CTL_4, vctl4);
+	intel_de_write(dev_priv, TV_V_CTL_5, vctl5);
+	intel_de_write(dev_priv, TV_V_CTL_6, vctl6);
+	intel_de_write(dev_priv, TV_V_CTL_7, vctl7);
+}
+
+static void set_color_conversion(struct drm_i915_private *dev_priv,
+				 const struct color_conversion *color_conversion)
+{
+	if (!color_conversion)
+		return;
+
+	intel_de_write(dev_priv, TV_CSC_Y,
+		       (color_conversion->ry << 16) | color_conversion->gy);
+	intel_de_write(dev_priv, TV_CSC_Y2,
+		       (color_conversion->by << 16) | color_conversion->ay);
+	intel_de_write(dev_priv, TV_CSC_U,
+		       (color_conversion->ru << 16) | color_conversion->gu);
+	intel_de_write(dev_priv, TV_CSC_U2,
+		       (color_conversion->bu << 16) | color_conversion->au);
+	intel_de_write(dev_priv, TV_CSC_V,
+		       (color_conversion->rv << 16) | color_conversion->gv);
+	intel_de_write(dev_priv, TV_CSC_V2,
+		       (color_conversion->bv << 16) | color_conversion->av);
+}
+
+static void intel_tv_pre_enable(struct intel_atomic_state *state,
+				struct intel_encoder *encoder,
+				const struct intel_crtc_state *pipe_config,
+				const struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+	struct intel_tv *intel_tv = enc_to_tv(encoder);
+	const struct intel_tv_connector_state *tv_conn_state =
+		to_intel_tv_connector_state(conn_state);
+	const struct tv_mode *tv_mode = intel_tv_mode_find(conn_state);
+	u32 tv_ctl, tv_filter_ctl;
+	u32 scctl1, scctl2, scctl3;
+	int i, j;
+	const struct video_levels *video_levels;
+	const struct color_conversion *color_conversion;
+	bool burst_ena;
+	int xpos, ypos;
+	unsigned int xsize, ysize;
+
+	if (!tv_mode)
+		return;	/* can't happen (mode_prepare prevents this) */
+
+	tv_ctl = intel_de_read(dev_priv, TV_CTL);
+	tv_ctl &= TV_CTL_SAVE;
+
+	switch (intel_tv->type) {
+	default:
+	case DRM_MODE_CONNECTOR_Unknown:
+	case DRM_MODE_CONNECTOR_Composite:
+		tv_ctl |= TV_ENC_OUTPUT_COMPOSITE;
+		video_levels = tv_mode->composite_levels;
+		color_conversion = tv_mode->composite_color;
+		burst_ena = tv_mode->burst_ena;
+		break;
+	case DRM_MODE_CONNECTOR_Component:
+		tv_ctl |= TV_ENC_OUTPUT_COMPONENT;
+		video_levels = &component_levels;
+		if (tv_mode->burst_ena)
+			color_conversion = &sdtv_csc_yprpb;
+		else
+			color_conversion = &hdtv_csc_yprpb;
+		burst_ena = false;
+		break;
+	case DRM_MODE_CONNECTOR_SVIDEO:
+		tv_ctl |= TV_ENC_OUTPUT_SVIDEO;
+		video_levels = tv_mode->svideo_levels;
+		color_conversion = tv_mode->svideo_color;
+		burst_ena = tv_mode->burst_ena;
+		break;
+	}
+
+	tv_ctl |= TV_ENC_PIPE_SEL(crtc->pipe);
+
+	switch (tv_mode->oversample) {
+	case 8:
+		tv_ctl |= TV_OVERSAMPLE_8X;
+		break;
+	case 4:
+		tv_ctl |= TV_OVERSAMPLE_4X;
+		break;
+	case 2:
+		tv_ctl |= TV_OVERSAMPLE_2X;
+		break;
+	default:
+		tv_ctl |= TV_OVERSAMPLE_NONE;
+		break;
+	}
+
+	if (tv_mode->progressive)
+		tv_ctl |= TV_PROGRESSIVE;
+	if (tv_mode->trilevel_sync)
+		tv_ctl |= TV_TRILEVEL_SYNC;
+	if (tv_mode->pal_burst)
+		tv_ctl |= TV_PAL_BURST;
+
+	scctl1 = 0;
+	if (tv_mode->dda1_inc)
+		scctl1 |= TV_SC_DDA1_EN;
+	if (tv_mode->dda2_inc)
+		scctl1 |= TV_SC_DDA2_EN;
+	if (tv_mode->dda3_inc)
+		scctl1 |= TV_SC_DDA3_EN;
+	scctl1 |= tv_mode->sc_reset;
+	if (video_levels)
+		scctl1 |= video_levels->burst << TV_BURST_LEVEL_SHIFT;
+	scctl1 |= tv_mode->dda1_inc << TV_SCDDA1_INC_SHIFT;
+
+	scctl2 = tv_mode->dda2_size << TV_SCDDA2_SIZE_SHIFT |
+		tv_mode->dda2_inc << TV_SCDDA2_INC_SHIFT;
+
+	scctl3 = tv_mode->dda3_size << TV_SCDDA3_SIZE_SHIFT |
+		tv_mode->dda3_inc << TV_SCDDA3_INC_SHIFT;
+
+	/* Enable two fixes for the chips that need them. */
+	if (IS_I915GM(dev_priv))
+		tv_ctl |= TV_ENC_C0_FIX | TV_ENC_SDP_FIX;
+
+	set_tv_mode_timings(dev_priv, tv_mode, burst_ena);
+
+	intel_de_write(dev_priv, TV_SC_CTL_1, scctl1);
+	intel_de_write(dev_priv, TV_SC_CTL_2, scctl2);
+	intel_de_write(dev_priv, TV_SC_CTL_3, scctl3);
+
+	set_color_conversion(dev_priv, color_conversion);
+
+	if (DISPLAY_VER(dev_priv) >= 4)
+		intel_de_write(dev_priv, TV_CLR_KNOBS, 0x00404000);
+	else
+		intel_de_write(dev_priv, TV_CLR_KNOBS, 0x00606000);
+
+	if (video_levels)
+		intel_de_write(dev_priv, TV_CLR_LEVEL,
+			       ((video_levels->black << TV_BLACK_LEVEL_SHIFT) | (video_levels->blank << TV_BLANK_LEVEL_SHIFT)));
+
+	assert_transcoder_disabled(dev_priv, pipe_config->cpu_transcoder);
+
+	/* Filter ctl must be set before TV_WIN_SIZE */
+	tv_filter_ctl = TV_AUTO_SCALE;
+	if (tv_conn_state->bypass_vfilter)
+		tv_filter_ctl |= TV_V_FILTER_BYPASS;
+	intel_de_write(dev_priv, TV_FILTER_CTL_1, tv_filter_ctl);
+
+	xsize = tv_mode->hblank_start - tv_mode->hblank_end;
+	ysize = intel_tv_mode_vdisplay(tv_mode);
+
+	xpos = conn_state->tv.margins.left;
+	ypos = tv_conn_state->margins.top;
+	xsize -= (conn_state->tv.margins.left +
+		  conn_state->tv.margins.right);
+	ysize -= (tv_conn_state->margins.top +
+		  tv_conn_state->margins.bottom);
+	intel_de_write(dev_priv, TV_WIN_POS, (xpos << 16) | ypos);
+	intel_de_write(dev_priv, TV_WIN_SIZE, (xsize << 16) | ysize);
+
+	j = 0;
+	for (i = 0; i < 60; i++)
+		intel_de_write(dev_priv, TV_H_LUMA(i),
+			       tv_mode->filter_table[j++]);
+	for (i = 0; i < 60; i++)
+		intel_de_write(dev_priv, TV_H_CHROMA(i),
+			       tv_mode->filter_table[j++]);
+	for (i = 0; i < 43; i++)
+		intel_de_write(dev_priv, TV_V_LUMA(i),
+			       tv_mode->filter_table[j++]);
+	for (i = 0; i < 43; i++)
+		intel_de_write(dev_priv, TV_V_CHROMA(i),
+			       tv_mode->filter_table[j++]);
+	intel_de_write(dev_priv, TV_DAC,
+		       intel_de_read(dev_priv, TV_DAC) & TV_DAC_SAVE);
+	intel_de_write(dev_priv, TV_CTL, tv_ctl);
+}
+
+static int
+intel_tv_detect_type(struct intel_tv *intel_tv,
+		      struct drm_connector *connector)
+{
+	struct intel_crtc *crtc = to_intel_crtc(connector->state->crtc);
+	struct drm_device *dev = connector->dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	u32 tv_ctl, save_tv_ctl;
+	u32 tv_dac, save_tv_dac;
+	int type;
+
+	/* Disable TV interrupts around load detect or we'll recurse */
+	if (connector->polled & DRM_CONNECTOR_POLL_HPD) {
+		spin_lock_irq(&dev_priv->irq_lock);
+		i915_disable_pipestat(dev_priv, 0,
+				      PIPE_HOTPLUG_INTERRUPT_STATUS |
+				      PIPE_HOTPLUG_TV_INTERRUPT_STATUS);
+		spin_unlock_irq(&dev_priv->irq_lock);
+	}
+
+	save_tv_dac = tv_dac = intel_de_read(dev_priv, TV_DAC);
+	save_tv_ctl = tv_ctl = intel_de_read(dev_priv, TV_CTL);
+
+	/* Poll for TV detection */
+	tv_ctl &= ~(TV_ENC_ENABLE | TV_ENC_PIPE_SEL_MASK | TV_TEST_MODE_MASK);
+	tv_ctl |= TV_TEST_MODE_MONITOR_DETECT;
+	tv_ctl |= TV_ENC_PIPE_SEL(crtc->pipe);
+
+	tv_dac &= ~(TVDAC_SENSE_MASK | DAC_A_MASK | DAC_B_MASK | DAC_C_MASK);
+	tv_dac |= (TVDAC_STATE_CHG_EN |
+		   TVDAC_A_SENSE_CTL |
+		   TVDAC_B_SENSE_CTL |
+		   TVDAC_C_SENSE_CTL |
+		   DAC_CTL_OVERRIDE |
+		   DAC_A_0_7_V |
+		   DAC_B_0_7_V |
+		   DAC_C_0_7_V);
+
+
+	/*
+	 * The TV sense state should be cleared to zero on cantiga platform. Otherwise
+	 * the TV is misdetected. This is hardware requirement.
+	 */
+	if (IS_GM45(dev_priv))
+		tv_dac &= ~(TVDAC_STATE_CHG_EN | TVDAC_A_SENSE_CTL |
+			    TVDAC_B_SENSE_CTL | TVDAC_C_SENSE_CTL);
+
+	intel_de_write(dev_priv, TV_CTL, tv_ctl);
+	intel_de_write(dev_priv, TV_DAC, tv_dac);
+	intel_de_posting_read(dev_priv, TV_DAC);
+
+	intel_crtc_wait_for_next_vblank(crtc);
+
+	type = -1;
+	tv_dac = intel_de_read(dev_priv, TV_DAC);
+	drm_dbg_kms(&dev_priv->drm, "TV detected: %x, %x\n", tv_ctl, tv_dac);
+	/*
+	 *  A B C
+	 *  0 1 1 Composite
+	 *  1 0 X svideo
+	 *  0 0 0 Component
+	 */
+	if ((tv_dac & TVDAC_SENSE_MASK) == (TVDAC_B_SENSE | TVDAC_C_SENSE)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Detected Composite TV connection\n");
+		type = DRM_MODE_CONNECTOR_Composite;
+	} else if ((tv_dac & (TVDAC_A_SENSE|TVDAC_B_SENSE)) == TVDAC_A_SENSE) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Detected S-Video TV connection\n");
+		type = DRM_MODE_CONNECTOR_SVIDEO;
+	} else if ((tv_dac & TVDAC_SENSE_MASK) == 0) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Detected Component TV connection\n");
+		type = DRM_MODE_CONNECTOR_Component;
+	} else {
+		drm_dbg_kms(&dev_priv->drm, "Unrecognised TV connection\n");
+		type = -1;
+	}
+
+	intel_de_write(dev_priv, TV_DAC, save_tv_dac & ~TVDAC_STATE_CHG_EN);
+	intel_de_write(dev_priv, TV_CTL, save_tv_ctl);
+	intel_de_posting_read(dev_priv, TV_CTL);
+
+	/* For unknown reasons the hw barfs if we don't do this vblank wait. */
+	intel_crtc_wait_for_next_vblank(crtc);
+
+	/* Restore interrupt config */
+	if (connector->polled & DRM_CONNECTOR_POLL_HPD) {
+		spin_lock_irq(&dev_priv->irq_lock);
+		i915_enable_pipestat(dev_priv, 0,
+				     PIPE_HOTPLUG_INTERRUPT_STATUS |
+				     PIPE_HOTPLUG_TV_INTERRUPT_STATUS);
+		spin_unlock_irq(&dev_priv->irq_lock);
+	}
+
+	return type;
+}
+
+/*
+ * Here we set accurate tv format according to connector type
+ * i.e Component TV should not be assigned by NTSC or PAL
+ */
+static void intel_tv_find_better_format(struct drm_connector *connector)
+{
+	struct intel_tv *intel_tv = intel_attached_tv(to_intel_connector(connector));
+	const struct tv_mode *tv_mode = intel_tv_mode_find(connector->state);
+	int i;
+
+	/* Component supports everything so we can keep the current mode */
+	if (intel_tv->type == DRM_MODE_CONNECTOR_Component)
+		return;
+
+	/* If the current mode is fine don't change it */
+	if (!tv_mode->component_only)
+		return;
+
+	for (i = 0; i < ARRAY_SIZE(tv_modes); i++) {
+		tv_mode = &tv_modes[i];
+
+		if (!tv_mode->component_only)
+			break;
+	}
+
+	connector->state->tv.mode = i;
+}
+
+static int
+intel_tv_detect(struct drm_connector *connector,
+		struct drm_modeset_acquire_ctx *ctx,
+		bool force)
+{
+	struct drm_i915_private *i915 = to_i915(connector->dev);
+	struct intel_tv *intel_tv = intel_attached_tv(to_intel_connector(connector));
+	enum drm_connector_status status;
+	int type;
+
+	drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s] force=%d\n",
+		    connector->base.id, connector->name, force);
+
+	if (!INTEL_DISPLAY_ENABLED(i915))
+		return connector_status_disconnected;
+
+	if (force) {
+		struct intel_load_detect_pipe tmp;
+		int ret;
+
+		ret = intel_get_load_detect_pipe(connector, &tmp, ctx);
+		if (ret < 0)
+			return ret;
+
+		if (ret > 0) {
+			type = intel_tv_detect_type(intel_tv, connector);
+			intel_release_load_detect_pipe(connector, &tmp, ctx);
+			status = type < 0 ?
+				connector_status_disconnected :
+				connector_status_connected;
+		} else
+			status = connector_status_unknown;
+
+		if (status == connector_status_connected) {
+			intel_tv->type = type;
+			intel_tv_find_better_format(connector);
+		}
+
+		return status;
+	} else
+		return connector->status;
+}
+
+static const struct input_res {
+	u16 w, h;
+} input_res_table[] = {
+	{ 640, 480 },
+	{ 800, 600 },
+	{ 1024, 768 },
+	{ 1280, 1024 },
+	{ 848, 480 },
+	{ 1280, 720 },
+	{ 1920, 1080 },
+};
+
+/* Choose preferred mode according to line number of TV format */
+static bool
+intel_tv_is_preferred_mode(const struct drm_display_mode *mode,
+			   const struct tv_mode *tv_mode)
+{
+	int vdisplay = intel_tv_mode_vdisplay(tv_mode);
+
+	/* prefer 480 line modes for all SD TV modes */
+	if (vdisplay <= 576)
+		vdisplay = 480;
+
+	return vdisplay == mode->vdisplay;
+}
+
+static void
+intel_tv_set_mode_type(struct drm_display_mode *mode,
+		       const struct tv_mode *tv_mode)
+{
+	mode->type = DRM_MODE_TYPE_DRIVER;
+
+	if (intel_tv_is_preferred_mode(mode, tv_mode))
+		mode->type |= DRM_MODE_TYPE_PREFERRED;
+}
+
+static int
+intel_tv_get_modes(struct drm_connector *connector)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->dev);
+	const struct tv_mode *tv_mode = intel_tv_mode_find(connector->state);
+	int i, count = 0;
+
+	for (i = 0; i < ARRAY_SIZE(input_res_table); i++) {
+		const struct input_res *input = &input_res_table[i];
+		struct drm_display_mode *mode;
+
+		if (input->w > 1024 &&
+		    !tv_mode->progressive &&
+		    !tv_mode->component_only)
+			continue;
+
+		/* no vertical scaling with wide sources on gen3 */
+		if (DISPLAY_VER(dev_priv) == 3 && input->w > 1024 &&
+		    input->h > intel_tv_mode_vdisplay(tv_mode))
+			continue;
+
+		mode = drm_mode_create(connector->dev);
+		if (!mode)
+			continue;
+
+		/*
+		 * We take the TV mode and scale it to look
+		 * like it had the expected h/vdisplay. This
+		 * provides the most information to userspace
+		 * about the actual timings of the mode. We
+		 * do ignore the margins though.
+		 */
+		intel_tv_mode_to_mode(mode, tv_mode, tv_mode->clock);
+		if (count == 0) {
+			drm_dbg_kms(&dev_priv->drm, "TV mode: " DRM_MODE_FMT "\n",
+				    DRM_MODE_ARG(mode));
+		}
+		intel_tv_scale_mode_horiz(mode, input->w, 0, 0);
+		intel_tv_scale_mode_vert(mode, input->h, 0, 0);
+		intel_tv_set_mode_type(mode, tv_mode);
+
+		drm_mode_set_name(mode);
+
+		drm_mode_probed_add(connector, mode);
+		count++;
+	}
+
+	return count;
+}
+
+static const struct drm_connector_funcs intel_tv_connector_funcs = {
+	.late_register = intel_connector_register,
+	.early_unregister = intel_connector_unregister,
+	.destroy = intel_connector_destroy,
+	.fill_modes = drm_helper_probe_single_connector_modes,
+	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+	.atomic_duplicate_state = intel_tv_connector_duplicate_state,
+};
+
+static int intel_tv_atomic_check(struct drm_connector *connector,
+				 struct drm_atomic_state *state)
+{
+	struct drm_connector_state *new_state;
+	struct drm_crtc_state *new_crtc_state;
+	struct drm_connector_state *old_state;
+
+	new_state = drm_atomic_get_new_connector_state(state, connector);
+	if (!new_state->crtc)
+		return 0;
+
+	old_state = drm_atomic_get_old_connector_state(state, connector);
+	new_crtc_state = drm_atomic_get_new_crtc_state(state, new_state->crtc);
+
+	if (old_state->tv.mode != new_state->tv.mode ||
+	    old_state->tv.margins.left != new_state->tv.margins.left ||
+	    old_state->tv.margins.right != new_state->tv.margins.right ||
+	    old_state->tv.margins.top != new_state->tv.margins.top ||
+	    old_state->tv.margins.bottom != new_state->tv.margins.bottom) {
+		/* Force a modeset. */
+
+		new_crtc_state->connectors_changed = true;
+	}
+
+	return 0;
+}
+
+static const struct drm_connector_helper_funcs intel_tv_connector_helper_funcs = {
+	.detect_ctx = intel_tv_detect,
+	.mode_valid = intel_tv_mode_valid,
+	.get_modes = intel_tv_get_modes,
+	.atomic_check = intel_tv_atomic_check,
+};
+
+static const struct drm_encoder_funcs intel_tv_enc_funcs = {
+	.destroy = intel_encoder_destroy,
+};
+
+void
+intel_tv_init(struct drm_i915_private *dev_priv)
+{
+	struct drm_device *dev = &dev_priv->drm;
+	struct drm_connector *connector;
+	struct intel_tv *intel_tv;
+	struct intel_encoder *intel_encoder;
+	struct intel_connector *intel_connector;
+	u32 tv_dac_on, tv_dac_off, save_tv_dac;
+	const char *tv_format_names[ARRAY_SIZE(tv_modes)];
+	int i, initial_mode = 0;
+	struct drm_connector_state *state;
+
+	if ((intel_de_read(dev_priv, TV_CTL) & TV_FUSE_STATE_MASK) == TV_FUSE_STATE_DISABLED)
+		return;
+
+	if (!intel_bios_is_tv_present(dev_priv)) {
+		drm_dbg_kms(&dev_priv->drm, "Integrated TV is not present.\n");
+		return;
+	}
+
+	/*
+	 * Sanity check the TV output by checking to see if the
+	 * DAC register holds a value
+	 */
+	save_tv_dac = intel_de_read(dev_priv, TV_DAC);
+
+	intel_de_write(dev_priv, TV_DAC, save_tv_dac | TVDAC_STATE_CHG_EN);
+	tv_dac_on = intel_de_read(dev_priv, TV_DAC);
+
+	intel_de_write(dev_priv, TV_DAC, save_tv_dac & ~TVDAC_STATE_CHG_EN);
+	tv_dac_off = intel_de_read(dev_priv, TV_DAC);
+
+	intel_de_write(dev_priv, TV_DAC, save_tv_dac);
+
+	/*
+	 * If the register does not hold the state change enable
+	 * bit, (either as a 0 or a 1), assume it doesn't really
+	 * exist
+	 */
+	if ((tv_dac_on & TVDAC_STATE_CHG_EN) == 0 ||
+	    (tv_dac_off & TVDAC_STATE_CHG_EN) != 0)
+		return;
+
+	intel_tv = kzalloc(sizeof(*intel_tv), GFP_KERNEL);
+	if (!intel_tv) {
+		return;
+	}
+
+	intel_connector = intel_connector_alloc();
+	if (!intel_connector) {
+		kfree(intel_tv);
+		return;
+	}
+
+	intel_encoder = &intel_tv->base;
+	connector = &intel_connector->base;
+	state = connector->state;
+
+	/*
+	 * The documentation, for the older chipsets at least, recommend
+	 * using a polling method rather than hotplug detection for TVs.
+	 * This is because in order to perform the hotplug detection, the PLLs
+	 * for the TV must be kept alive increasing power drain and starving
+	 * bandwidth from other encoders. Notably for instance, it causes
+	 * pipe underruns on Crestline when this encoder is supposedly idle.
+	 *
+	 * More recent chipsets favour HDMI rather than integrated S-Video.
+	 */
+	intel_connector->polled = DRM_CONNECTOR_POLL_CONNECT;
+
+	drm_connector_init(dev, connector, &intel_tv_connector_funcs,
+			   DRM_MODE_CONNECTOR_SVIDEO);
+
+	drm_encoder_init(dev, &intel_encoder->base, &intel_tv_enc_funcs,
+			 DRM_MODE_ENCODER_TVDAC, "TV");
+
+	intel_encoder->compute_config = intel_tv_compute_config;
+	intel_encoder->get_config = intel_tv_get_config;
+	intel_encoder->pre_enable = intel_tv_pre_enable;
+	intel_encoder->enable = intel_enable_tv;
+	intel_encoder->disable = intel_disable_tv;
+	intel_encoder->get_hw_state = intel_tv_get_hw_state;
+	intel_connector->get_hw_state = intel_connector_get_hw_state;
+
+	intel_connector_attach_encoder(intel_connector, intel_encoder);
+
+	intel_encoder->type = INTEL_OUTPUT_TVOUT;
+	intel_encoder->power_domain = POWER_DOMAIN_PORT_OTHER;
+	intel_encoder->port = PORT_NONE;
+	intel_encoder->pipe_mask = ~0;
+	intel_encoder->cloneable = 0;
+	intel_tv->type = DRM_MODE_CONNECTOR_Unknown;
+
+	/* BIOS margin values */
+	state->tv.margins.left = 54;
+	state->tv.margins.top = 36;
+	state->tv.margins.right = 46;
+	state->tv.margins.bottom = 37;
+
+	state->tv.mode = initial_mode;
+
+	drm_connector_helper_add(connector, &intel_tv_connector_helper_funcs);
+	connector->interlace_allowed = false;
+	connector->doublescan_allowed = false;
+
+	/* Create TV properties then attach current values */
+	for (i = 0; i < ARRAY_SIZE(tv_modes); i++) {
+		/* 1080p50/1080p60 not supported on gen3 */
+		if (DISPLAY_VER(dev_priv) == 3 &&
+		    tv_modes[i].oversample == 1)
+			break;
+
+		tv_format_names[i] = tv_modes[i].name;
+	}
+	drm_mode_create_tv_properties(dev, i, tv_format_names);
+
+	drm_object_attach_property(&connector->base, dev->mode_config.tv_mode_property,
+				   state->tv.mode);
+	drm_object_attach_property(&connector->base,
+				   dev->mode_config.tv_left_margin_property,
+				   state->tv.margins.left);
+	drm_object_attach_property(&connector->base,
+				   dev->mode_config.tv_top_margin_property,
+				   state->tv.margins.top);
+	drm_object_attach_property(&connector->base,
+				   dev->mode_config.tv_right_margin_property,
+				   state->tv.margins.right);
+	drm_object_attach_property(&connector->base,
+				   dev->mode_config.tv_bottom_margin_property,
+				   state->tv.margins.bottom);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_tv.h b/drivers/gpu/drm/i915/display/intel_tv.h
new file mode 100644
index 000000000..44518575e
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_tv.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_TV_H__
+#define __INTEL_TV_H__
+
+struct drm_i915_private;
+
+void intel_tv_init(struct drm_i915_private *dev_priv);
+
+#endif /* __INTEL_TV_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_vbt_defs.h b/drivers/gpu/drm/i915/display/intel_vbt_defs.h
new file mode 100644
index 000000000..a9f44abfc
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_vbt_defs.h
@@ -0,0 +1,1067 @@
+/*
+ * Copyright © 2006-2016 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Authors:
+ *    Eric Anholt <eric@anholt.net>
+ *
+ */
+
+/*
+ * This information is private to VBT parsing in intel_bios.c.
+ *
+ * Please do NOT include anywhere else.
+ */
+#ifndef _INTEL_BIOS_PRIVATE
+#error "intel_vbt_defs.h is private to intel_bios.c"
+#endif
+
+#ifndef _INTEL_VBT_DEFS_H_
+#define _INTEL_VBT_DEFS_H_
+
+#include "intel_bios.h"
+
+/**
+ * struct vbt_header - VBT Header structure
+ * @signature:		VBT signature, always starts with "$VBT"
+ * @version:		Version of this structure
+ * @header_size:	Size of this structure
+ * @vbt_size:		Size of VBT (VBT Header, BDB Header and data blocks)
+ * @vbt_checksum:	Checksum
+ * @reserved0:		Reserved
+ * @bdb_offset:		Offset of &struct bdb_header from beginning of VBT
+ * @aim_offset:		Offsets of add-in data blocks from beginning of VBT
+ */
+struct vbt_header {
+	u8 signature[20];
+	u16 version;
+	u16 header_size;
+	u16 vbt_size;
+	u8 vbt_checksum;
+	u8 reserved0;
+	u32 bdb_offset;
+	u32 aim_offset[4];
+} __packed;
+
+/**
+ * struct bdb_header - BDB Header structure
+ * @signature:		BDB signature "BIOS_DATA_BLOCK"
+ * @version:		Version of the data block definitions
+ * @header_size:	Size of this structure
+ * @bdb_size:		Size of BDB (BDB Header and data blocks)
+ */
+struct bdb_header {
+	u8 signature[16];
+	u16 version;
+	u16 header_size;
+	u16 bdb_size;
+} __packed;
+
+/*
+ * BDB version number dependencies are documented as:
+ *
+ * <start>+
+ *    indicates the field was introduced in version <start>
+ *    and is still valid
+ *
+ * <start>-<end>
+ *    indicates the field was introduced in version <start>
+ *    and obsoleted in version <end>+1.
+ *
+ * ??? indicates the specific version number is unknown
+ */
+
+/*
+ * There are several types of BIOS data blocks (BDBs), each block has
+ * an ID and size in the first 3 bytes (ID in first, size in next 2).
+ * Known types are listed below.
+ */
+enum bdb_block_id {
+	BDB_GENERAL_FEATURES		= 1,
+	BDB_GENERAL_DEFINITIONS		= 2,
+	BDB_OLD_TOGGLE_LIST		= 3,
+	BDB_MODE_SUPPORT_LIST		= 4,
+	BDB_GENERIC_MODE_TABLE		= 5,
+	BDB_EXT_MMIO_REGS		= 6,
+	BDB_SWF_IO			= 7,
+	BDB_SWF_MMIO			= 8,
+	BDB_PSR				= 9,
+	BDB_MODE_REMOVAL_TABLE		= 10,
+	BDB_CHILD_DEVICE_TABLE		= 11,
+	BDB_DRIVER_FEATURES		= 12,
+	BDB_DRIVER_PERSISTENCE		= 13,
+	BDB_EXT_TABLE_PTRS		= 14,
+	BDB_DOT_CLOCK_OVERRIDE		= 15,
+	BDB_DISPLAY_SELECT		= 16,
+	BDB_DRIVER_ROTATION		= 18,
+	BDB_DISPLAY_REMOVE		= 19,
+	BDB_OEM_CUSTOM			= 20,
+	BDB_EFP_LIST			= 21, /* workarounds for VGA hsync/vsync */
+	BDB_SDVO_LVDS_OPTIONS		= 22,
+	BDB_SDVO_PANEL_DTDS		= 23,
+	BDB_SDVO_LVDS_PNP_IDS		= 24,
+	BDB_SDVO_LVDS_POWER_SEQ		= 25,
+	BDB_TV_OPTIONS			= 26,
+	BDB_EDP				= 27,
+	BDB_LVDS_OPTIONS		= 40,
+	BDB_LVDS_LFP_DATA_PTRS		= 41,
+	BDB_LVDS_LFP_DATA		= 42,
+	BDB_LVDS_BACKLIGHT		= 43,
+	BDB_LFP_POWER			= 44,
+	BDB_MIPI_CONFIG			= 52,
+	BDB_MIPI_SEQUENCE		= 53,
+	BDB_COMPRESSION_PARAMETERS	= 56,
+	BDB_GENERIC_DTD			= 58,
+	BDB_SKIP			= 254, /* VBIOS private block, ignore */
+};
+
+/*
+ * Block 1 - General Bit Definitions
+ */
+
+struct bdb_general_features {
+        /* bits 1 */
+	u8 panel_fitting:2;
+	u8 flexaim:1;
+	u8 msg_enable:1;
+	u8 clear_screen:3;
+	u8 color_flip:1;
+
+        /* bits 2 */
+	u8 download_ext_vbt:1;
+	u8 enable_ssc:1;
+	u8 ssc_freq:1;
+	u8 enable_lfp_on_override:1;
+	u8 disable_ssc_ddt:1;
+	u8 underscan_vga_timings:1;
+	u8 display_clock_mode:1;
+	u8 vbios_hotplug_support:1;
+
+        /* bits 3 */
+	u8 disable_smooth_vision:1;
+	u8 single_dvi:1;
+	u8 rotate_180:1;					/* 181+ */
+	u8 fdi_rx_polarity_inverted:1;
+	u8 vbios_extended_mode:1;				/* 160+ */
+	u8 copy_ilfp_dtd_to_sdvo_lvds_dtd:1;			/* 160+ */
+	u8 panel_best_fit_timing:1;				/* 160+ */
+	u8 ignore_strap_state:1;				/* 160+ */
+
+        /* bits 4 */
+	u8 legacy_monitor_detect;
+
+        /* bits 5 */
+	u8 int_crt_support:1;
+	u8 int_tv_support:1;
+	u8 int_efp_support:1;
+	u8 dp_ssc_enable:1;	/* PCH attached eDP supports SSC */
+	u8 dp_ssc_freq:1;	/* SSC freq for PCH attached eDP */
+	u8 dp_ssc_dongle_supported:1;
+	u8 rsvd11:2; /* finish byte */
+
+	/* bits 6 */
+	u8 tc_hpd_retry_timeout:7;				/* 242+ */
+	u8 rsvd12:1;
+
+	/* bits 7 */
+	u8 afc_startup_config:2;				/* 249+ */
+	u8 rsvd13:6;
+} __packed;
+
+/*
+ * Block 2 - General Bytes Definition
+ */
+
+/* pre-915 */
+#define GPIO_PIN_DVI_LVDS	0x03 /* "DVI/LVDS DDC GPIO pins" */
+#define GPIO_PIN_ADD_I2C	0x05 /* "ADDCARD I2C GPIO pins" */
+#define GPIO_PIN_ADD_DDC	0x04 /* "ADDCARD DDC GPIO pins" */
+#define GPIO_PIN_ADD_DDC_I2C	0x06 /* "ADDCARD DDC/I2C GPIO pins" */
+
+/* Device handle */
+#define DEVICE_HANDLE_CRT	0x0001
+#define DEVICE_HANDLE_EFP1	0x0004
+#define DEVICE_HANDLE_EFP2	0x0040
+#define DEVICE_HANDLE_EFP3	0x0020
+#define DEVICE_HANDLE_EFP4	0x0010 /* 194+ */
+#define DEVICE_HANDLE_EFP5	0x0002 /* 215+ */
+#define DEVICE_HANDLE_EFP6	0x0001 /* 217+ */
+#define DEVICE_HANDLE_EFP7	0x0100 /* 217+ */
+#define DEVICE_HANDLE_EFP8	0x0200 /* 217+ */
+#define DEVICE_HANDLE_LFP1	0x0008
+#define DEVICE_HANDLE_LFP2	0x0080
+
+/* Pre 915 */
+#define DEVICE_TYPE_NONE	0x00
+#define DEVICE_TYPE_CRT		0x01
+#define DEVICE_TYPE_TV		0x09
+#define DEVICE_TYPE_EFP		0x12
+#define DEVICE_TYPE_LFP		0x22
+/* On 915+ */
+#define DEVICE_TYPE_CRT_DPMS		0x6001
+#define DEVICE_TYPE_CRT_DPMS_HOTPLUG	0x4001
+#define DEVICE_TYPE_TV_COMPOSITE	0x0209
+#define DEVICE_TYPE_TV_MACROVISION	0x0289
+#define DEVICE_TYPE_TV_RF_COMPOSITE	0x020c
+#define DEVICE_TYPE_TV_SVIDEO_COMPOSITE	0x0609
+#define DEVICE_TYPE_TV_SCART		0x0209
+#define DEVICE_TYPE_TV_CODEC_HOTPLUG_PWR 0x6009
+#define DEVICE_TYPE_EFP_HOTPLUG_PWR	0x6012
+#define DEVICE_TYPE_EFP_DVI_HOTPLUG_PWR	0x6052
+#define DEVICE_TYPE_EFP_DVI_I		0x6053
+#define DEVICE_TYPE_EFP_DVI_D_DUAL	0x6152
+#define DEVICE_TYPE_EFP_DVI_D_HDCP	0x60d2
+#define DEVICE_TYPE_OPENLDI_HOTPLUG_PWR	0x6062
+#define DEVICE_TYPE_OPENLDI_DUALPIX	0x6162
+#define DEVICE_TYPE_LFP_PANELLINK	0x5012
+#define DEVICE_TYPE_LFP_CMOS_PWR	0x5042
+#define DEVICE_TYPE_LFP_LVDS_PWR	0x5062
+#define DEVICE_TYPE_LFP_LVDS_DUAL	0x5162
+#define DEVICE_TYPE_LFP_LVDS_DUAL_HDCP	0x51e2
+
+/* Add the device class for LFP, TV, HDMI */
+#define DEVICE_TYPE_INT_LFP		0x1022
+#define DEVICE_TYPE_INT_TV		0x1009
+#define DEVICE_TYPE_HDMI		0x60D2
+#define DEVICE_TYPE_DP			0x68C6
+#define DEVICE_TYPE_DP_DUAL_MODE	0x60D6
+#define DEVICE_TYPE_eDP			0x78C6
+
+#define DEVICE_TYPE_CLASS_EXTENSION	(1 << 15)
+#define DEVICE_TYPE_POWER_MANAGEMENT	(1 << 14)
+#define DEVICE_TYPE_HOTPLUG_SIGNALING	(1 << 13)
+#define DEVICE_TYPE_INTERNAL_CONNECTOR	(1 << 12)
+#define DEVICE_TYPE_NOT_HDMI_OUTPUT	(1 << 11)
+#define DEVICE_TYPE_MIPI_OUTPUT		(1 << 10)
+#define DEVICE_TYPE_COMPOSITE_OUTPUT	(1 << 9)
+#define DEVICE_TYPE_DUAL_CHANNEL	(1 << 8)
+#define DEVICE_TYPE_HIGH_SPEED_LINK	(1 << 6)
+#define DEVICE_TYPE_LVDS_SIGNALING	(1 << 5)
+#define DEVICE_TYPE_TMDS_DVI_SIGNALING	(1 << 4)
+#define DEVICE_TYPE_VIDEO_SIGNALING	(1 << 3)
+#define DEVICE_TYPE_DISPLAYPORT_OUTPUT	(1 << 2)
+#define DEVICE_TYPE_DIGITAL_OUTPUT	(1 << 1)
+#define DEVICE_TYPE_ANALOG_OUTPUT	(1 << 0)
+
+#define DEVICE_CFG_NONE		0x00
+#define DEVICE_CFG_12BIT_DVOB	0x01
+#define DEVICE_CFG_12BIT_DVOC	0x02
+#define DEVICE_CFG_24BIT_DVOBC	0x09
+#define DEVICE_CFG_24BIT_DVOCB	0x0a
+#define DEVICE_CFG_DUAL_DVOB	0x11
+#define DEVICE_CFG_DUAL_DVOC	0x12
+#define DEVICE_CFG_DUAL_DVOBC	0x13
+#define DEVICE_CFG_DUAL_LINK_DVOBC	0x19
+#define DEVICE_CFG_DUAL_LINK_DVOCB	0x1a
+
+#define DEVICE_WIRE_NONE	0x00
+#define DEVICE_WIRE_DVOB	0x01
+#define DEVICE_WIRE_DVOC	0x02
+#define DEVICE_WIRE_DVOBC	0x03
+#define DEVICE_WIRE_DVOBB	0x05
+#define DEVICE_WIRE_DVOCC	0x06
+#define DEVICE_WIRE_DVOB_MASTER 0x0d
+#define DEVICE_WIRE_DVOC_MASTER 0x0e
+
+/* dvo_port pre BDB 155 */
+#define DEVICE_PORT_DVOA	0x00 /* none on 845+ */
+#define DEVICE_PORT_DVOB	0x01
+#define DEVICE_PORT_DVOC	0x02
+
+/* dvo_port BDB 155+ */
+#define DVO_PORT_HDMIA		0
+#define DVO_PORT_HDMIB		1
+#define DVO_PORT_HDMIC		2
+#define DVO_PORT_HDMID		3
+#define DVO_PORT_LVDS		4
+#define DVO_PORT_TV		5
+#define DVO_PORT_CRT		6
+#define DVO_PORT_DPB		7
+#define DVO_PORT_DPC		8
+#define DVO_PORT_DPD		9
+#define DVO_PORT_DPA		10
+#define DVO_PORT_DPE		11				/* 193+ */
+#define DVO_PORT_HDMIE		12				/* 193+ */
+#define DVO_PORT_DPF		13				/* N/A */
+#define DVO_PORT_HDMIF		14				/* N/A */
+#define DVO_PORT_DPG		15				/* 217+ */
+#define DVO_PORT_HDMIG		16				/* 217+ */
+#define DVO_PORT_DPH		17				/* 217+ */
+#define DVO_PORT_HDMIH		18				/* 217+ */
+#define DVO_PORT_DPI		19				/* 217+ */
+#define DVO_PORT_HDMII		20				/* 217+ */
+#define DVO_PORT_MIPIA		21				/* 171+ */
+#define DVO_PORT_MIPIB		22				/* 171+ */
+#define DVO_PORT_MIPIC		23				/* 171+ */
+#define DVO_PORT_MIPID		24				/* 171+ */
+
+#define HDMI_MAX_DATA_RATE_PLATFORM	0			/* 204+ */
+#define HDMI_MAX_DATA_RATE_297		1			/* 204+ */
+#define HDMI_MAX_DATA_RATE_165		2			/* 204+ */
+#define HDMI_MAX_DATA_RATE_594		3			/* 249+ */
+#define HDMI_MAX_DATA_RATE_340		4			/* 249+ */
+#define HDMI_MAX_DATA_RATE_300		5			/* 249+ */
+
+#define LEGACY_CHILD_DEVICE_CONFIG_SIZE		33
+
+/* DDC Bus DDI Type 155+ */
+enum vbt_gmbus_ddi {
+	DDC_BUS_DDI_B = 0x1,
+	DDC_BUS_DDI_C,
+	DDC_BUS_DDI_D,
+	DDC_BUS_DDI_F,
+	ICL_DDC_BUS_DDI_A = 0x1,
+	ICL_DDC_BUS_DDI_B,
+	TGL_DDC_BUS_DDI_C,
+	RKL_DDC_BUS_DDI_D = 0x3,
+	RKL_DDC_BUS_DDI_E,
+	ICL_DDC_BUS_PORT_1 = 0x4,
+	ICL_DDC_BUS_PORT_2,
+	ICL_DDC_BUS_PORT_3,
+	ICL_DDC_BUS_PORT_4,
+	TGL_DDC_BUS_PORT_5,
+	TGL_DDC_BUS_PORT_6,
+	ADLS_DDC_BUS_PORT_TC1 = 0x2,
+	ADLS_DDC_BUS_PORT_TC2,
+	ADLS_DDC_BUS_PORT_TC3,
+	ADLS_DDC_BUS_PORT_TC4,
+	ADLP_DDC_BUS_PORT_TC1 = 0x3,
+	ADLP_DDC_BUS_PORT_TC2,
+	ADLP_DDC_BUS_PORT_TC3,
+	ADLP_DDC_BUS_PORT_TC4
+
+};
+
+#define DP_AUX_A 0x40
+#define DP_AUX_B 0x10
+#define DP_AUX_C 0x20
+#define DP_AUX_D 0x30
+#define DP_AUX_E 0x50
+#define DP_AUX_F 0x60
+#define DP_AUX_G 0x70
+#define DP_AUX_H 0x80
+#define DP_AUX_I 0x90
+
+/* DP max link rate 216+ */
+#define BDB_216_VBT_DP_MAX_LINK_RATE_HBR3	0
+#define BDB_216_VBT_DP_MAX_LINK_RATE_HBR2	1
+#define BDB_216_VBT_DP_MAX_LINK_RATE_HBR	2
+#define BDB_216_VBT_DP_MAX_LINK_RATE_LBR	3
+
+/* DP max link rate 230+ */
+#define BDB_230_VBT_DP_MAX_LINK_RATE_DEF	0
+#define BDB_230_VBT_DP_MAX_LINK_RATE_LBR	1
+#define BDB_230_VBT_DP_MAX_LINK_RATE_HBR	2
+#define BDB_230_VBT_DP_MAX_LINK_RATE_HBR2	3
+#define BDB_230_VBT_DP_MAX_LINK_RATE_HBR3	4
+#define BDB_230_VBT_DP_MAX_LINK_RATE_UHBR10	5
+#define BDB_230_VBT_DP_MAX_LINK_RATE_UHBR13P5	6
+#define BDB_230_VBT_DP_MAX_LINK_RATE_UHBR20	7
+
+/*
+ * The child device config, aka the display device data structure, provides a
+ * description of a port and its configuration on the platform.
+ *
+ * The child device config size has been increased, and fields have been added
+ * and their meaning has changed over time. Care must be taken when accessing
+ * basically any of the fields to ensure the correct interpretation for the BDB
+ * version in question.
+ *
+ * When we copy the child device configs to dev_priv->display.vbt.child_dev, we
+ * reserve space for the full structure below, and initialize the tail not
+ * actually present in VBT to zeros. Accessing those fields is fine, as long as
+ * the default zero is taken into account, again according to the BDB version.
+ *
+ * BDB versions 155 and below are considered legacy, and version 155 seems to be
+ * a baseline for some of the VBT documentation. When adding new fields, please
+ * include the BDB version when the field was added, if it's above that.
+ */
+struct child_device_config {
+	u16 handle;
+	u16 device_type; /* See DEVICE_TYPE_* above */
+
+	union {
+		u8  device_id[10]; /* ascii string */
+		struct {
+			u8 i2c_speed;
+			u8 dp_onboard_redriver_preemph:3;	/* 158+ */
+			u8 dp_onboard_redriver_vswing:3;	/* 158+ */
+			u8 dp_onboard_redriver_present:1;	/* 158+ */
+			u8 reserved0:1;
+			u8 dp_ondock_redriver_preemph:3;	/* 158+ */
+			u8 dp_ondock_redriver_vswing:3;		/* 158+ */
+			u8 dp_ondock_redriver_present:1;	/* 158+ */
+			u8 reserved1:1;
+			u8 hdmi_level_shifter_value:5;		/* 158+ */
+			u8 hdmi_max_data_rate:3;		/* 204+ */
+			u16 dtd_buf_ptr;			/* 161+ */
+			u8 edidless_efp:1;			/* 161+ */
+			u8 compression_enable:1;		/* 198+ */
+			u8 compression_method_cps:1;		/* 198+ */
+			u8 ganged_edp:1;			/* 202+ */
+			u8 lttpr_non_transparent:1;		/* 235+ */
+			u8 disable_compression_for_ext_disp:1;	/* 251+ */
+			u8 reserved2:2;
+			u8 compression_structure_index:4;	/* 198+ */
+			u8 reserved3:4;
+			u8 hdmi_max_frl_rate:4;			/* 237+ */
+			u8 hdmi_max_frl_rate_valid:1;		/* 237+ */
+			u8 reserved4:3;				/* 237+ */
+			u8 reserved5;
+		} __packed;
+	} __packed;
+
+	u16 addin_offset;
+	u8 dvo_port; /* See DEVICE_PORT_* and DVO_PORT_* above */
+	u8 i2c_pin;
+	u8 slave_addr;
+	u8 ddc_pin;
+	u16 edid_ptr;
+	u8 dvo_cfg; /* See DEVICE_CFG_* above */
+
+	union {
+		struct {
+			u8 dvo2_port;
+			u8 i2c2_pin;
+			u8 slave2_addr;
+			u8 ddc2_pin;
+		} __packed;
+		struct {
+			u8 efp_routed:1;			/* 158+ */
+			u8 lane_reversal:1;			/* 184+ */
+			u8 lspcon:1;				/* 192+ */
+			u8 iboost:1;				/* 196+ */
+			u8 hpd_invert:1;			/* 196+ */
+			u8 use_vbt_vswing:1;			/* 218+ */
+			u8 dp_max_lane_count:2;			/* 244+ */
+			u8 hdmi_support:1;			/* 158+ */
+			u8 dp_support:1;			/* 158+ */
+			u8 tmds_support:1;			/* 158+ */
+			u8 support_reserved:5;
+			u8 aux_channel;
+			u8 dongle_detect;
+		} __packed;
+	} __packed;
+
+	u8 pipe_cap:2;
+	u8 sdvo_stall:1;					/* 158+ */
+	u8 hpd_status:2;
+	u8 integrated_encoder:1;
+	u8 capabilities_reserved:2;
+	u8 dvo_wiring; /* See DEVICE_WIRE_* above */
+
+	union {
+		u8 dvo2_wiring;
+		u8 mipi_bridge_type;				/* 171+ */
+	} __packed;
+
+	u16 extended_type;
+	u8 dvo_function;
+	u8 dp_usb_type_c:1;					/* 195+ */
+	u8 tbt:1;						/* 209+ */
+	u8 flags2_reserved:2;					/* 195+ */
+	u8 dp_port_trace_length:4;				/* 209+ */
+	u8 dp_gpio_index;					/* 195+ */
+	u16 dp_gpio_pin_num;					/* 195+ */
+	u8 dp_iboost_level:4;					/* 196+ */
+	u8 hdmi_iboost_level:4;					/* 196+ */
+	u8 dp_max_link_rate:3;					/* 216+ */
+	u8 dp_max_link_rate_reserved:5;				/* 216+ */
+} __packed;
+
+struct bdb_general_definitions {
+	/* DDC GPIO */
+	u8 crt_ddc_gmbus_pin;
+
+	/* DPMS bits */
+	u8 dpms_non_acpi:1;
+	u8 skip_boot_crt_detect:1;
+	u8 dpms_aim:1;
+	u8 rsvd1:5; /* finish byte */
+
+	/* boot device bits */
+	u8 boot_display[2];
+	u8 child_dev_size;
+
+	/*
+	 * Device info:
+	 * If TV is present, it'll be at devices[0].
+	 * LVDS will be next, either devices[0] or [1], if present.
+	 * On some platforms the number of device is 6. But could be as few as
+	 * 4 if both TV and LVDS are missing.
+	 * And the device num is related with the size of general definition
+	 * block. It is obtained by using the following formula:
+	 * number = (block_size - sizeof(bdb_general_definitions))/
+	 *	     defs->child_dev_size;
+	 */
+	u8 devices[];
+} __packed;
+
+/*
+ * Block 9 - SRD Feature Block
+ */
+
+struct psr_table {
+	/* Feature bits */
+	u8 full_link:1;						/* 165+ */
+	u8 require_aux_to_wakeup:1;				/* 165+ */
+	u8 feature_bits_rsvd:6;
+
+	/* Wait times */
+	u8 idle_frames:4;					/* 165+ */
+	u8 lines_to_wait:3;					/* 165+ */
+	u8 wait_times_rsvd:1;
+
+	/* TP wake up time in multiple of 100 */
+	u16 tp1_wakeup_time;					/* 165+ */
+	u16 tp2_tp3_wakeup_time;				/* 165+ */
+} __packed;
+
+struct bdb_psr {
+	struct psr_table psr_table[16];
+
+	/* PSR2 TP2/TP3 wakeup time for 16 panels */
+	u32 psr2_tp2_tp3_wakeup_time;				/* 226+ */
+} __packed;
+
+/*
+ * Block 12 - Driver Features Data Block
+ */
+
+#define BDB_DRIVER_FEATURE_NO_LVDS		0
+#define BDB_DRIVER_FEATURE_INT_LVDS		1
+#define BDB_DRIVER_FEATURE_SDVO_LVDS		2
+#define BDB_DRIVER_FEATURE_INT_SDVO_LVDS	3
+
+struct bdb_driver_features {
+	/* Driver bits */
+	u8 boot_dev_algorithm:1;
+	u8 allow_display_switch_dvd:1;
+	u8 allow_display_switch_dos:1;
+	u8 hotplug_dvo:1;
+	u8 dual_view_zoom:1;
+	u8 int15h_hook:1;
+	u8 sprite_in_clone:1;
+	u8 primary_lfp_id:1;
+
+	u16 boot_mode_x;
+	u16 boot_mode_y;
+	u8 boot_mode_bpp;
+	u8 boot_mode_refresh;
+
+	/* Extended Driver Bits 1 */
+	u16 enable_lfp_primary:1;
+	u16 selective_mode_pruning:1;
+	u16 dual_frequency:1;
+	u16 render_clock_freq:1; /* 0: high freq; 1: low freq */
+	u16 nt_clone_support:1;
+	u16 power_scheme_ui:1; /* 0: CUI; 1: 3rd party */
+	u16 sprite_display_assign:1; /* 0: secondary; 1: primary */
+	u16 cui_aspect_scaling:1;
+	u16 preserve_aspect_ratio:1;
+	u16 sdvo_device_power_down:1;
+	u16 crt_hotplug:1;
+	u16 lvds_config:2;
+	u16 tv_hotplug:1;
+	u16 hdmi_config:2;
+
+	/* Driver Flags 1 */
+	u8 static_display:1;					/* 163+ */
+	u8 embedded_platform:1;					/* 163+ */
+	u8 display_subsystem_enable:1;				/* 163+ */
+	u8 reserved0:5;
+
+	u16 legacy_crt_max_x;
+	u16 legacy_crt_max_y;
+	u8 legacy_crt_max_refresh;
+
+	/* Extended Driver Bits 2 */
+	u8 hdmi_termination:1;
+	u8 cea861d_hdmi_support:1;
+	u8 self_refresh_enable:1;
+	u8 reserved1:5;
+
+	u8 custom_vbt_version;					/* 155+ */
+
+	/* Driver Feature Flags */
+	u16 rmpm_enabled:1;					/* 165+ */
+	u16 s2ddt_enabled:1;					/* 165+ */
+	u16 dpst_enabled:1;					/* 165-227 */
+	u16 bltclt_enabled:1;					/* 165+ */
+	u16 adb_enabled:1;					/* 165-227 */
+	u16 drrs_enabled:1;					/* 165-227 */
+	u16 grs_enabled:1;					/* 165+ */
+	u16 gpmt_enabled:1;					/* 165+ */
+	u16 tbt_enabled:1;					/* 165+ */
+	u16 psr_enabled:1;					/* 165-227 */
+	u16 ips_enabled:1;					/* 165+ */
+	u16 dpfs_enabled:1;					/* 165+ */
+	u16 dmrrs_enabled:1;					/* 174-227 */
+	u16 adt_enabled:1;					/* ???-228 */
+	u16 hpd_wake:1;						/* 201-240 */
+	u16 pc_feature_valid:1;
+} __packed;
+
+/*
+ * Block 22 - SDVO LVDS General Options
+ */
+
+struct bdb_sdvo_lvds_options {
+	u8 panel_backlight;
+	u8 h40_set_panel_type;
+	u8 panel_type;
+	u8 ssc_clk_freq;
+	u16 als_low_trip;
+	u16 als_high_trip;
+	u8 sclalarcoeff_tab_row_num;
+	u8 sclalarcoeff_tab_row_size;
+	u8 coefficient[8];
+	u8 panel_misc_bits_1;
+	u8 panel_misc_bits_2;
+	u8 panel_misc_bits_3;
+	u8 panel_misc_bits_4;
+} __packed;
+
+/*
+ * Block 23 - SDVO LVDS Panel DTDs
+ */
+
+struct lvds_dvo_timing {
+	u16 clock;		/**< In 10khz */
+	u8 hactive_lo;
+	u8 hblank_lo;
+	u8 hblank_hi:4;
+	u8 hactive_hi:4;
+	u8 vactive_lo;
+	u8 vblank_lo;
+	u8 vblank_hi:4;
+	u8 vactive_hi:4;
+	u8 hsync_off_lo;
+	u8 hsync_pulse_width_lo;
+	u8 vsync_pulse_width_lo:4;
+	u8 vsync_off_lo:4;
+	u8 vsync_pulse_width_hi:2;
+	u8 vsync_off_hi:2;
+	u8 hsync_pulse_width_hi:2;
+	u8 hsync_off_hi:2;
+	u8 himage_lo;
+	u8 vimage_lo;
+	u8 vimage_hi:4;
+	u8 himage_hi:4;
+	u8 h_border;
+	u8 v_border;
+	u8 rsvd1:3;
+	u8 digital:2;
+	u8 vsync_positive:1;
+	u8 hsync_positive:1;
+	u8 non_interlaced:1;
+} __packed;
+
+struct bdb_sdvo_panel_dtds {
+	struct lvds_dvo_timing dtds[4];
+} __packed;
+
+/*
+ * Block 27 - eDP VBT Block
+ */
+
+#define EDP_18BPP	0
+#define EDP_24BPP	1
+#define EDP_30BPP	2
+#define EDP_RATE_1_62	0
+#define EDP_RATE_2_7	1
+#define EDP_RATE_5_4	2
+#define EDP_LANE_1	0
+#define EDP_LANE_2	1
+#define EDP_LANE_4	3
+#define EDP_PREEMPHASIS_NONE	0
+#define EDP_PREEMPHASIS_3_5dB	1
+#define EDP_PREEMPHASIS_6dB	2
+#define EDP_PREEMPHASIS_9_5dB	3
+#define EDP_VSWING_0_4V		0
+#define EDP_VSWING_0_6V		1
+#define EDP_VSWING_0_8V		2
+#define EDP_VSWING_1_2V		3
+
+
+struct edp_fast_link_params {
+	u8 rate:4;						/* ???-223 */
+	u8 lanes:4;
+	u8 preemphasis:4;
+	u8 vswing:4;
+} __packed;
+
+struct edp_pwm_delays {
+	u16 pwm_on_to_backlight_enable;
+	u16 backlight_disable_to_pwm_off;
+} __packed;
+
+struct edp_full_link_params {
+	u8 preemphasis:4;
+	u8 vswing:4;
+} __packed;
+
+struct edp_apical_params {
+	u32 panel_oui;
+	u32 dpcd_base_address;
+	u32 dpcd_idridix_control_0;
+	u32 dpcd_option_select;
+	u32 dpcd_backlight;
+	u32 ambient_light;
+	u32 backlight_scale;
+} __packed;
+
+struct bdb_edp {
+	struct edp_power_seq power_seqs[16];
+	u32 color_depth;
+	struct edp_fast_link_params fast_link_params[16];
+	u32 sdrrs_msa_timing_delay;
+
+	/* ith bit indicates enabled/disabled for (i+1)th panel */
+	u16 edp_s3d_feature;					/* 162+ */
+	u16 edp_t3_optimization;				/* 165+ */
+	u64 edp_vswing_preemph;					/* 173+ */
+	u16 fast_link_training;					/* 182+ */
+	u16 dpcd_600h_write_required;				/* 185+ */
+	struct edp_pwm_delays pwm_delays[16];			/* 186+ */
+	u16 full_link_params_provided;				/* 199+ */
+	struct edp_full_link_params full_link_params[16];	/* 199+ */
+	u16 apical_enable;					/* 203+ */
+	struct edp_apical_params apical_params[16];		/* 203+ */
+	u16 edp_fast_link_training_rate[16];			/* 224+ */
+	u16 edp_max_port_link_rate[16];				/* 244+ */
+} __packed;
+
+/*
+ * Block 40 - LFP Data Block
+ */
+
+struct bdb_lvds_options {
+	u8 panel_type;
+	u8 panel_type2;						/* 212+ */
+	/* LVDS capabilities, stored in a dword */
+	u8 pfit_mode:2;
+	u8 pfit_text_mode_enhanced:1;
+	u8 pfit_gfx_mode_enhanced:1;
+	u8 pfit_ratio_auto:1;
+	u8 pixel_dither:1;
+	u8 lvds_edid:1;						/* ???-240 */
+	u8 rsvd2:1;
+	u8 rsvd4;
+	/* LVDS Panel channel bits stored here */
+	u32 lvds_panel_channel_bits;
+	/* LVDS SSC (Spread Spectrum Clock) bits stored here. */
+	u16 ssc_bits;
+	u16 ssc_freq;
+	u16 ssc_ddt;
+	/* Panel color depth defined here */
+	u16 panel_color_depth;
+	/* LVDS panel type bits stored here */
+	u32 dps_panel_type_bits;
+	/* LVDS backlight control type bits stored here */
+	u32 blt_control_type_bits;				/* ???-240 */
+
+	u16 lcdvcc_s0_enable;					/* 200+ */
+	u32 rotation;						/* 228+ */
+	u32 position;						/* 240+ */
+} __packed;
+
+/*
+ * Block 41 - LFP Data Table Pointers
+ */
+struct lvds_lfp_data_ptr_table {
+	u16 offset; /* offsets are from start of bdb */
+	u8 table_size;
+} __packed;
+
+/* LFP pointer table contains entries to the struct below */
+struct lvds_lfp_data_ptr {
+	struct lvds_lfp_data_ptr_table fp_timing;
+	struct lvds_lfp_data_ptr_table dvo_timing;
+	struct lvds_lfp_data_ptr_table panel_pnp_id;
+} __packed;
+
+struct bdb_lvds_lfp_data_ptrs {
+	u8 lvds_entries;
+	struct lvds_lfp_data_ptr ptr[16];
+	struct lvds_lfp_data_ptr_table panel_name;		/* (156-163?)+ */
+} __packed;
+
+/*
+ * Block 42 - LFP Data Tables
+ */
+
+/* LFP data has 3 blocks per entry */
+struct lvds_fp_timing {
+	u16 x_res;
+	u16 y_res;
+	u32 lvds_reg;
+	u32 lvds_reg_val;
+	u32 pp_on_reg;
+	u32 pp_on_reg_val;
+	u32 pp_off_reg;
+	u32 pp_off_reg_val;
+	u32 pp_cycle_reg;
+	u32 pp_cycle_reg_val;
+	u32 pfit_reg;
+	u32 pfit_reg_val;
+	u16 terminator;
+} __packed;
+
+struct lvds_pnp_id {
+	u16 mfg_name;
+	u16 product_code;
+	u32 serial;
+	u8 mfg_week;
+	u8 mfg_year;
+} __packed;
+
+/*
+ * For reference only. fp_timing has variable size so
+ * the data must be accessed using the data table pointers.
+ * Do not use this directly!
+ */
+struct lvds_lfp_data_entry {
+	struct lvds_fp_timing fp_timing;
+	struct lvds_dvo_timing dvo_timing;
+	struct lvds_pnp_id pnp_id;
+} __packed;
+
+struct bdb_lvds_lfp_data {
+	struct lvds_lfp_data_entry data[16];
+} __packed;
+
+struct lvds_lfp_panel_name {
+	u8 name[13];
+} __packed;
+
+struct lvds_lfp_black_border {
+	u8 top;		/* 227+ */
+	u8 bottom;	/* 227+ */
+	u8 left;	/* 238+ */
+	u8 right;	/* 238+ */
+} __packed;
+
+struct bdb_lvds_lfp_data_tail {
+	struct lvds_lfp_panel_name panel_name[16];		/* (156-163?)+ */
+	u16 scaling_enable;					/* 187+ */
+	u8 seamless_drrs_min_refresh_rate[16];			/* 188+ */
+	u8 pixel_overlap_count[16];				/* 208+ */
+	struct lvds_lfp_black_border black_border[16];		/* 227+ */
+	u16 dual_lfp_port_sync_enable;				/* 231+ */
+	u16 gpu_dithering_for_banding_artifacts;		/* 245+ */
+} __packed;
+
+/*
+ * Block 43 - LFP Backlight Control Data Block
+ */
+
+#define BDB_BACKLIGHT_TYPE_NONE	0
+#define BDB_BACKLIGHT_TYPE_PWM	2
+
+struct lfp_backlight_data_entry {
+	u8 type:2;
+	u8 active_low_pwm:1;
+	u8 obsolete1:5;
+	u16 pwm_freq_hz;
+	u8 min_brightness;					/* ???-233 */
+	u8 obsolete2;
+	u8 obsolete3;
+} __packed;
+
+struct lfp_backlight_control_method {
+	u8 type:4;
+	u8 controller:4;
+} __packed;
+
+struct lfp_brightness_level {
+	u16 level;
+	u16 reserved;
+} __packed;
+
+#define EXP_BDB_LFP_BL_DATA_SIZE_REV_191 \
+	offsetof(struct bdb_lfp_backlight_data, brightness_level)
+#define EXP_BDB_LFP_BL_DATA_SIZE_REV_234 \
+	offsetof(struct bdb_lfp_backlight_data, brightness_precision_bits)
+
+struct bdb_lfp_backlight_data {
+	u8 entry_size;
+	struct lfp_backlight_data_entry data[16];
+	u8 level[16];							/* ???-233 */
+	struct lfp_backlight_control_method backlight_control[16];
+	struct lfp_brightness_level brightness_level[16];		/* 234+ */
+	struct lfp_brightness_level brightness_min_level[16];		/* 234+ */
+	u8 brightness_precision_bits[16];				/* 236+ */
+	u16 hdr_dpcd_refresh_timeout[16];				/* 239+ */
+} __packed;
+
+/*
+ * Block 44 - LFP Power Conservation Features Block
+ */
+struct lfp_power_features {
+	u8 reserved1:1;
+	u8 power_conservation_pref:3;
+	u8 reserved2:1;
+	u8 lace_enabled_status:1;					/* 210+ */
+	u8 lace_support:1;						/* 210+ */
+	u8 als_enable:1;
+} __packed;
+
+struct als_data_entry {
+	u16 backlight_adjust;
+	u16 lux;
+} __packed;
+
+struct aggressiveness_profile_entry {
+	u8 dpst_aggressiveness : 4;
+	u8 lace_aggressiveness : 4;
+} __packed;
+
+struct aggressiveness_profile2_entry {
+	u8 opst_aggressiveness : 4;
+	u8 elp_aggressiveness : 4;
+} __packed;
+
+struct bdb_lfp_power {
+	struct lfp_power_features features;				/* ???-227 */
+	struct als_data_entry als[5];
+	u8 lace_aggressiveness_profile:3;				/* 210-227 */
+	u8 reserved1:5;
+	u16 dpst;							/* 228+ */
+	u16 psr;							/* 228+ */
+	u16 drrs;							/* 228+ */
+	u16 lace_support;						/* 228+ */
+	u16 adt;							/* 228+ */
+	u16 dmrrs;							/* 228+ */
+	u16 adb;							/* 228+ */
+	u16 lace_enabled_status;					/* 228+ */
+	struct aggressiveness_profile_entry aggressiveness[16];		/* 228+ */
+	u16 hobl;							/* 232+ */
+	u16 vrr_feature_enabled;					/* 233+ */
+	u16 elp;							/* 247+ */
+	u16 opst;							/* 247+ */
+	struct aggressiveness_profile2_entry aggressiveness2[16];	/* 247+ */
+} __packed;
+
+/*
+ * Block 52 - MIPI Configuration Block
+ */
+
+#define MAX_MIPI_CONFIGURATIONS	6
+
+struct bdb_mipi_config {
+	struct mipi_config config[MAX_MIPI_CONFIGURATIONS];		/* 175+ */
+	struct mipi_pps_data pps[MAX_MIPI_CONFIGURATIONS];		/* 177+ */
+	struct edp_pwm_delays pwm_delays[MAX_MIPI_CONFIGURATIONS];	/* 186+ */
+	u8 pmic_i2c_bus_number[MAX_MIPI_CONFIGURATIONS];		/* 190+ */
+} __packed;
+
+/*
+ * Block 53 - MIPI Sequence Block
+ */
+
+struct bdb_mipi_sequence {
+	u8 version;
+	u8 data[]; /* up to 6 variable length blocks */
+} __packed;
+
+/*
+ * Block 56 - Compression Parameters
+ */
+
+#define VBT_RC_BUFFER_BLOCK_SIZE_1KB	0
+#define VBT_RC_BUFFER_BLOCK_SIZE_4KB	1
+#define VBT_RC_BUFFER_BLOCK_SIZE_16KB	2
+#define VBT_RC_BUFFER_BLOCK_SIZE_64KB	3
+
+#define VBT_DSC_LINE_BUFFER_DEPTH(vbt_value)	((vbt_value) + 8) /* bits */
+#define VBT_DSC_MAX_BPP(vbt_value)		(6 + (vbt_value) * 2)
+
+struct dsc_compression_parameters_entry {
+	u8 version_major:4;
+	u8 version_minor:4;
+
+	u8 rc_buffer_block_size:2;
+	u8 reserved1:6;
+
+	/*
+	 * Buffer size in bytes:
+	 *
+	 * 4 ^ rc_buffer_block_size * 1024 * (rc_buffer_size + 1) bytes
+	 */
+	u8 rc_buffer_size;
+	u32 slices_per_line;
+
+	u8 line_buffer_depth:4;
+	u8 reserved2:4;
+
+	/* Flag Bits 1 */
+	u8 block_prediction_enable:1;
+	u8 reserved3:7;
+
+	u8 max_bpp; /* mapping */
+
+	/* Color depth capabilities */
+	u8 reserved4:1;
+	u8 support_8bpc:1;
+	u8 support_10bpc:1;
+	u8 support_12bpc:1;
+	u8 reserved5:4;
+
+	u16 slice_height;
+} __packed;
+
+struct bdb_compression_parameters {
+	u16 entry_size;
+	struct dsc_compression_parameters_entry data[16];
+} __packed;
+
+/*
+ * Block 58 - Generic DTD Block
+ */
+
+struct generic_dtd_entry {
+	u32 pixel_clock;
+	u16 hactive;
+	u16 hblank;
+	u16 hfront_porch;
+	u16 hsync;
+	u16 vactive;
+	u16 vblank;
+	u16 vfront_porch;
+	u16 vsync;
+	u16 width_mm;
+	u16 height_mm;
+
+	/* Flags */
+	u8 rsvd_flags:6;
+	u8 vsync_positive_polarity:1;
+	u8 hsync_positive_polarity:1;
+
+	u8 rsvd[3];
+} __packed;
+
+struct bdb_generic_dtd {
+	u16 gdtd_size;
+	struct generic_dtd_entry dtd[];	/* up to 24 DTD's */
+} __packed;
+
+#endif /* _INTEL_VBT_DEFS_H_ */
diff --git a/drivers/gpu/drm/i915/display/intel_vdsc.c b/drivers/gpu/drm/i915/display/intel_vdsc.c
new file mode 100644
index 000000000..269f97923
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_vdsc.c
@@ -0,0 +1,1218 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2018 Intel Corporation
+ *
+ * Author: Gaurav K Singh <gaurav.k.singh@intel.com>
+ *         Manasi Navare <manasi.d.navare@intel.com>
+ */
+#include <linux/limits.h>
+
+#include <drm/display/drm_dsc_helper.h>
+
+#include "i915_drv.h"
+#include "intel_crtc.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_dsi.h"
+#include "intel_qp_tables.h"
+#include "intel_vdsc.h"
+
+enum ROW_INDEX_BPP {
+	ROW_INDEX_6BPP = 0,
+	ROW_INDEX_8BPP,
+	ROW_INDEX_10BPP,
+	ROW_INDEX_12BPP,
+	ROW_INDEX_15BPP,
+	MAX_ROW_INDEX
+};
+
+enum COLUMN_INDEX_BPC {
+	COLUMN_INDEX_8BPC = 0,
+	COLUMN_INDEX_10BPC,
+	COLUMN_INDEX_12BPC,
+	COLUMN_INDEX_14BPC,
+	COLUMN_INDEX_16BPC,
+	MAX_COLUMN_INDEX
+};
+
+/* From DSC_v1.11 spec, rc_parameter_Set syntax element typically constant */
+static const u16 rc_buf_thresh[] = {
+	896, 1792, 2688, 3584, 4480, 5376, 6272, 6720, 7168, 7616,
+	7744, 7872, 8000, 8064
+};
+
+struct rc_parameters {
+	u16 initial_xmit_delay;
+	u8 first_line_bpg_offset;
+	u16 initial_offset;
+	u8 flatness_min_qp;
+	u8 flatness_max_qp;
+	u8 rc_quant_incr_limit0;
+	u8 rc_quant_incr_limit1;
+	struct drm_dsc_rc_range_parameters rc_range_params[DSC_NUM_BUF_RANGES];
+};
+
+/*
+ * Selected Rate Control Related Parameter Recommended Values
+ * from DSC_v1.11 spec & C Model release: DSC_model_20161212
+ */
+static const struct rc_parameters rc_parameters[][MAX_COLUMN_INDEX] = {
+{
+	/* 6BPP/8BPC */
+	{ 768, 15, 6144, 3, 13, 11, 11, {
+		{ 0, 4, 0 }, { 1, 6, -2 }, { 3, 8, -2 }, { 4, 8, -4 },
+		{ 5, 9, -6 }, { 5, 9, -6 }, { 6, 9, -6 }, { 6, 10, -8 },
+		{ 7, 11, -8 }, { 8, 12, -10 }, { 9, 12, -10 }, { 10, 12, -12 },
+		{ 10, 12, -12 }, { 11, 12, -12 }, { 13, 14, -12 }
+		}
+	},
+	/* 6BPP/10BPC */
+	{ 768, 15, 6144, 7, 17, 15, 15, {
+		{ 0, 8, 0 }, { 3, 10, -2 }, { 7, 12, -2 }, { 8, 12, -4 },
+		{ 9, 13, -6 }, { 9, 13, -6 }, { 10, 13, -6 }, { 10, 14, -8 },
+		{ 11, 15, -8 }, { 12, 16, -10 }, { 13, 16, -10 },
+		{ 14, 16, -12 }, { 14, 16, -12 }, { 15, 16, -12 },
+		{ 17, 18, -12 }
+		}
+	},
+	/* 6BPP/12BPC */
+	{ 768, 15, 6144, 11, 21, 19, 19, {
+		{ 0, 12, 0 }, { 5, 14, -2 }, { 11, 16, -2 }, { 12, 16, -4 },
+		{ 13, 17, -6 }, { 13, 17, -6 }, { 14, 17, -6 }, { 14, 18, -8 },
+		{ 15, 19, -8 }, { 16, 20, -10 }, { 17, 20, -10 },
+		{ 18, 20, -12 }, { 18, 20, -12 }, { 19, 20, -12 },
+		{ 21, 22, -12 }
+		}
+	},
+	/* 6BPP/14BPC */
+	{ 768, 15, 6144, 15, 25, 23, 27, {
+		{ 0, 16, 0 }, { 7, 18, -2 }, { 15, 20, -2 }, { 16, 20, -4 },
+		{ 17, 21, -6 }, { 17, 21, -6 }, { 18, 21, -6 }, { 18, 22, -8 },
+		{ 19, 23, -8 }, { 20, 24, -10 }, { 21, 24, -10 },
+		{ 22, 24, -12 }, { 22, 24, -12 }, { 23, 24, -12 },
+		{ 25, 26, -12 }
+		}
+	},
+	/* 6BPP/16BPC */
+	{ 768, 15, 6144, 19, 29, 27, 27, {
+		{ 0, 20, 0 }, { 9, 22, -2 }, { 19, 24, -2 }, { 20, 24, -4 },
+		{ 21, 25, -6 }, { 21, 25, -6 }, { 22, 25, -6 }, { 22, 26, -8 },
+		{ 23, 27, -8 }, { 24, 28, -10 }, { 25, 28, -10 },
+		{ 26, 28, -12 }, { 26, 28, -12 }, { 27, 28, -12 },
+		{ 29, 30, -12 }
+		}
+	},
+},
+{
+	/* 8BPP/8BPC */
+	{ 512, 12, 6144, 3, 12, 11, 11, {
+		{ 0, 4, 2 }, { 0, 4, 0 }, { 1, 5, 0 }, { 1, 6, -2 },
+		{ 3, 7, -4 }, { 3, 7, -6 }, { 3, 7, -8 }, { 3, 8, -8 },
+		{ 3, 9, -8 }, { 3, 10, -10 }, { 5, 11, -10 }, { 5, 12, -12 },
+		{ 5, 13, -12 }, { 7, 13, -12 }, { 13, 15, -12 }
+		}
+	},
+	/* 8BPP/10BPC */
+	{ 512, 12, 6144, 7, 16, 15, 15, {
+		{ 0, 4, 2 }, { 4, 8, 0 }, { 5, 9, 0 }, { 5, 10, -2 },
+		{ 7, 11, -4 }, { 7, 11, -6 }, { 7, 11, -8 }, { 7, 12, -8 },
+		{ 7, 13, -8 }, { 7, 14, -10 }, { 9, 15, -10 }, { 9, 16, -12 },
+		{ 9, 17, -12 }, { 11, 17, -12 }, { 17, 19, -12 }
+		}
+	},
+	/* 8BPP/12BPC */
+	{ 512, 12, 6144, 11, 20, 19, 19, {
+		{ 0, 12, 2 }, { 4, 12, 0 }, { 9, 13, 0 }, { 9, 14, -2 },
+		{ 11, 15, -4 }, { 11, 15, -6 }, { 11, 15, -8 }, { 11, 16, -8 },
+		{ 11, 17, -8 }, { 11, 18, -10 }, { 13, 19, -10 },
+		{ 13, 20, -12 }, { 13, 21, -12 }, { 15, 21, -12 },
+		{ 21, 23, -12 }
+		}
+	},
+	/* 8BPP/14BPC */
+	{ 512, 12, 6144, 15, 24, 23, 23, {
+		{ 0, 12, 0 }, { 5, 13, 0 }, { 11, 15, 0 }, { 12, 17, -2 },
+		{ 15, 19, -4 }, { 15, 19, -6 }, { 15, 19, -8 }, { 15, 20, -8 },
+		{ 15, 21, -8 }, { 15, 22, -10 }, { 17, 22, -10 },
+		{ 17, 23, -12 }, { 17, 23, -12 }, { 21, 24, -12 },
+		{ 24, 25, -12 }
+		}
+	},
+	/* 8BPP/16BPC */
+	{ 512, 12, 6144, 19, 28, 27, 27, {
+		{ 0, 12, 2 }, { 6, 14, 0 }, { 13, 17, 0 }, { 15, 20, -2 },
+		{ 19, 23, -4 }, { 19, 23, -6 }, { 19, 23, -8 }, { 19, 24, -8 },
+		{ 19, 25, -8 }, { 19, 26, -10 }, { 21, 26, -10 },
+		{ 21, 27, -12 }, { 21, 27, -12 }, { 25, 28, -12 },
+		{ 28, 29, -12 }
+		}
+	},
+},
+{
+	/* 10BPP/8BPC */
+	{ 410, 15, 5632, 3, 12, 11, 11, {
+		{ 0, 3, 2 }, { 0, 4, 0 }, { 1, 5, 0 }, { 2, 6, -2 },
+		{ 3, 7, -4 }, { 3, 7, -6 }, { 3, 7, -8 }, { 3, 8, -8 },
+		{ 3, 9, -8 }, { 3, 9, -10 }, { 5, 10, -10 }, { 5, 10, -10 },
+		{ 5, 11, -12 }, { 7, 11, -12 }, { 11, 12, -12 }
+		}
+	},
+	/* 10BPP/10BPC */
+	{ 410, 15, 5632, 7, 16, 15, 15, {
+		{ 0, 7, 2 }, { 4, 8, 0 }, { 5, 9, 0 }, { 6, 10, -2 },
+		{ 7, 11, -4 }, { 7, 11, -6 }, { 7, 11, -8 }, { 7, 12, -8 },
+		{ 7, 13, -8 }, { 7, 13, -10 }, { 9, 14, -10 }, { 9, 14, -10 },
+		{ 9, 15, -12 }, { 11, 15, -12 }, { 15, 16, -12 }
+		}
+	},
+	/* 10BPP/12BPC */
+	{ 410, 15, 5632, 11, 20, 19, 19, {
+		{ 0, 11, 2 }, { 4, 12, 0 }, { 9, 13, 0 }, { 10, 14, -2 },
+		{ 11, 15, -4 }, { 11, 15, -6 }, { 11, 15, -8 }, { 11, 16, -8 },
+		{ 11, 17, -8 }, { 11, 17, -10 }, { 13, 18, -10 },
+		{ 13, 18, -10 }, { 13, 19, -12 }, { 15, 19, -12 },
+		{ 19, 20, -12 }
+		}
+	},
+	/* 10BPP/14BPC */
+	{ 410, 15, 5632, 15, 24, 23, 23, {
+		{ 0, 11, 2 }, { 5, 13, 0 }, { 11, 15, 0 }, { 13, 18, -2 },
+		{ 15, 19, -4 }, { 15, 19, -6 }, { 15, 19, -8 }, { 15, 20, -8 },
+		{ 15, 21, -8 }, { 15, 21, -10 }, { 17, 22, -10 },
+		{ 17, 22, -10 }, { 17, 23, -12 }, { 19, 23, -12 },
+		{ 23, 24, -12 }
+		}
+	},
+	/* 10BPP/16BPC */
+	{ 410, 15, 5632, 19, 28, 27, 27, {
+		{ 0, 11, 2 }, { 6, 14, 0 }, { 13, 17, 0 }, { 16, 20, -2 },
+		{ 19, 23, -4 }, { 19, 23, -6 }, { 19, 23, -8 }, { 19, 24, -8 },
+		{ 19, 25, -8 }, { 19, 25, -10 }, { 21, 26, -10 },
+		{ 21, 26, -10 }, { 21, 27, -12 }, { 23, 27, -12 },
+		{ 27, 28, -12 }
+		}
+	},
+},
+{
+	/* 12BPP/8BPC */
+	{ 341, 15, 2048, 3, 12, 11, 11, {
+		{ 0, 2, 2 }, { 0, 4, 0 }, { 1, 5, 0 }, { 1, 6, -2 },
+		{ 3, 7, -4 }, { 3, 7, -6 }, { 3, 7, -8 }, { 3, 8, -8 },
+		{ 3, 9, -8 }, { 3, 10, -10 }, { 5, 11, -10 },
+		{ 5, 12, -12 }, { 5, 13, -12 }, { 7, 13, -12 }, { 13, 15, -12 }
+		}
+	},
+	/* 12BPP/10BPC */
+	{ 341, 15, 2048, 7, 16, 15, 15, {
+		{ 0, 2, 2 }, { 2, 5, 0 }, { 3, 7, 0 }, { 4, 8, -2 },
+		{ 6, 9, -4 }, { 7, 10, -6 }, { 7, 11, -8 }, { 7, 12, -8 },
+		{ 7, 13, -8 }, { 7, 14, -10 }, { 9, 15, -10 }, { 9, 16, -12 },
+		{ 9, 17, -12 }, { 11, 17, -12 }, { 17, 19, -12 }
+		}
+	},
+	/* 12BPP/12BPC */
+	{ 341, 15, 2048, 11, 20, 19, 19, {
+		{ 0, 6, 2 }, { 4, 9, 0 }, { 7, 11, 0 }, { 8, 12, -2 },
+		{ 10, 13, -4 }, { 11, 14, -6 }, { 11, 15, -8 }, { 11, 16, -8 },
+		{ 11, 17, -8 }, { 11, 18, -10 }, { 13, 19, -10 },
+		{ 13, 20, -12 }, { 13, 21, -12 }, { 15, 21, -12 },
+		{ 21, 23, -12 }
+		}
+	},
+	/* 12BPP/14BPC */
+	{ 341, 15, 2048, 15, 24, 23, 23, {
+		{ 0, 6, 2 }, { 7, 10, 0 }, { 9, 13, 0 }, { 11, 16, -2 },
+		{ 14, 17, -4 }, { 15, 18, -6 }, { 15, 19, -8 }, { 15, 20, -8 },
+		{ 15, 20, -8 }, { 15, 21, -10 }, { 17, 21, -10 },
+		{ 17, 21, -12 }, { 17, 21, -12 }, { 19, 22, -12 },
+		{ 22, 23, -12 }
+		}
+	},
+	/* 12BPP/16BPC */
+	{ 341, 15, 2048, 19, 28, 27, 27, {
+		{ 0, 6, 2 }, { 6, 11, 0 }, { 11, 15, 0 }, { 14, 18, -2 },
+		{ 18, 21, -4 }, { 19, 22, -6 }, { 19, 23, -8 }, { 19, 24, -8 },
+		{ 19, 24, -8 }, { 19, 25, -10 }, { 21, 25, -10 },
+		{ 21, 25, -12 }, { 21, 25, -12 }, { 23, 26, -12 },
+		{ 26, 27, -12 }
+		}
+	},
+},
+{
+	/* 15BPP/8BPC */
+	{ 273, 15, 2048, 3, 12, 11, 11, {
+		{ 0, 0, 10 }, { 0, 1, 8 }, { 0, 1, 6 }, { 0, 2, 4 },
+		{ 1, 2, 2 }, { 1, 3, 0 }, { 1, 3, -2 }, { 2, 4, -4 },
+		{ 2, 5, -6 }, { 3, 5, -8 }, { 4, 6, -10 }, { 4, 7, -10 },
+		{ 5, 7, -12 }, { 7, 8, -12 }, { 8, 9, -12 }
+		}
+	},
+	/* 15BPP/10BPC */
+	{ 273, 15, 2048, 7, 16, 15, 15, {
+		{ 0, 2, 10 }, { 2, 5, 8 }, { 3, 5, 6 }, { 4, 6, 4 },
+		{ 5, 6, 2 }, { 5, 7, 0 }, { 5, 7, -2 }, { 6, 8, -4 },
+		{ 6, 9, -6 }, { 7, 9, -8 }, { 8, 10, -10 }, { 8, 11, -10 },
+		{ 9, 11, -12 }, { 11, 12, -12 }, { 12, 13, -12 }
+		}
+	},
+	/* 15BPP/12BPC */
+	{ 273, 15, 2048, 11, 20, 19, 19, {
+		{ 0, 4, 10 }, { 2, 7, 8 }, { 4, 9, 6 }, { 6, 11, 4 },
+		{ 9, 11, 2 }, { 9, 11, 0 }, { 9, 12, -2 }, { 10, 12, -4 },
+		{ 11, 13, -6 }, { 11, 13, -8 }, { 12, 14, -10 },
+		{ 13, 15, -10 }, { 13, 15, -12 }, { 15, 16, -12 },
+		{ 16, 17, -12 }
+		}
+	},
+	/* 15BPP/14BPC */
+	{ 273, 15, 2048, 15, 24, 23, 23, {
+		{ 0, 4, 10 }, { 3, 8, 8 }, { 6, 11, 6 }, { 9, 14, 4 },
+		{ 13, 15, 2 }, { 13, 15, 0 }, { 13, 16, -2 }, { 14, 16, -4 },
+		{ 15, 17, -6 }, { 15, 17, -8 }, { 16, 18, -10 },
+		{ 17, 19, -10 }, { 17, 19, -12 }, { 19, 20, -12 },
+		{ 20, 21, -12 }
+		}
+	},
+	/* 15BPP/16BPC */
+	{ 273, 15, 2048, 19, 28, 27, 27, {
+		{ 0, 4, 10 }, { 4, 9, 8 }, { 8, 13, 6 }, { 12, 17, 4 },
+		{ 17, 19, 2 }, { 17, 20, 0 }, { 17, 20, -2 }, { 18, 20, -4 },
+		{ 19, 21, -6 }, { 19, 21, -8 }, { 20, 22, -10 },
+		{ 21, 23, -10 }, { 21, 23, -12 }, { 23, 24, -12 },
+		{ 24, 25, -12 }
+		}
+	}
+}
+
+};
+
+static int get_row_index_for_rc_params(u16 compressed_bpp)
+{
+	switch (compressed_bpp) {
+	case 6:
+		return ROW_INDEX_6BPP;
+	case 8:
+		return ROW_INDEX_8BPP;
+	case 10:
+		return ROW_INDEX_10BPP;
+	case 12:
+		return ROW_INDEX_12BPP;
+	case 15:
+		return ROW_INDEX_15BPP;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int get_column_index_for_rc_params(u8 bits_per_component)
+{
+	switch (bits_per_component) {
+	case 8:
+		return COLUMN_INDEX_8BPC;
+	case 10:
+		return COLUMN_INDEX_10BPC;
+	case 12:
+		return COLUMN_INDEX_12BPC;
+	case 14:
+		return COLUMN_INDEX_14BPC;
+	case 16:
+		return COLUMN_INDEX_16BPC;
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct rc_parameters *get_rc_params(u16 compressed_bpp,
+						 u8 bits_per_component)
+{
+	int row_index, column_index;
+
+	row_index = get_row_index_for_rc_params(compressed_bpp);
+	if (row_index < 0)
+		return NULL;
+
+	column_index = get_column_index_for_rc_params(bits_per_component);
+	if (column_index < 0)
+		return NULL;
+
+	return &rc_parameters[row_index][column_index];
+}
+
+bool intel_dsc_source_support(const struct intel_crtc_state *crtc_state)
+{
+	const struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+
+	if (!RUNTIME_INFO(i915)->has_dsc)
+		return false;
+
+	if (DISPLAY_VER(i915) >= 12)
+		return true;
+
+	if (DISPLAY_VER(i915) >= 11 && cpu_transcoder != TRANSCODER_A)
+		return true;
+
+	return false;
+}
+
+static bool is_pipe_dsc(struct intel_crtc *crtc, enum transcoder cpu_transcoder)
+{
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+
+	if (DISPLAY_VER(i915) >= 12)
+		return true;
+
+	if (cpu_transcoder == TRANSCODER_EDP ||
+	    cpu_transcoder == TRANSCODER_DSI_0 ||
+	    cpu_transcoder == TRANSCODER_DSI_1)
+		return false;
+
+	/* There's no pipe A DSC engine on ICL */
+	drm_WARN_ON(&i915->drm, crtc->pipe == PIPE_A);
+
+	return true;
+}
+
+static void
+calculate_rc_params(struct rc_parameters *rc,
+		    struct drm_dsc_config *vdsc_cfg)
+{
+	int bpc = vdsc_cfg->bits_per_component;
+	int bpp = vdsc_cfg->bits_per_pixel >> 4;
+	static const s8 ofs_und6[] = {
+		0, -2, -2, -4, -6, -6, -8, -8, -8, -10, -10, -12, -12, -12, -12
+	};
+	static const s8 ofs_und8[] = {
+		2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -10, -12, -12, -12
+	};
+	static const s8 ofs_und12[] = {
+		2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -10, -12, -12, -12
+	};
+	static const s8 ofs_und15[] = {
+		10, 8, 6, 4, 2, 0, -2, -4, -6, -8, -10, -10, -12, -12, -12
+	};
+	int qp_bpc_modifier = (bpc - 8) * 2;
+	u32 res, buf_i, bpp_i;
+
+	if (vdsc_cfg->slice_height >= 8)
+		rc->first_line_bpg_offset =
+			12 + DIV_ROUND_UP((9 * min(34, vdsc_cfg->slice_height - 8)), 100);
+	else
+		rc->first_line_bpg_offset = 2 * (vdsc_cfg->slice_height - 1);
+
+	/* Our hw supports only 444 modes as of today */
+	if (bpp >= 12)
+		rc->initial_offset = 2048;
+	else if (bpp >= 10)
+		rc->initial_offset = 5632 - DIV_ROUND_UP(((bpp - 10) * 3584), 2);
+	else if (bpp >= 8)
+		rc->initial_offset = 6144 - DIV_ROUND_UP(((bpp - 8) * 512), 2);
+	else
+		rc->initial_offset = 6144;
+
+	/* initial_xmit_delay = rc_model_size/2/compression_bpp */
+	rc->initial_xmit_delay = DIV_ROUND_UP(DSC_RC_MODEL_SIZE_CONST, 2 * bpp);
+
+	rc->flatness_min_qp = 3 + qp_bpc_modifier;
+	rc->flatness_max_qp = 12 + qp_bpc_modifier;
+
+	rc->rc_quant_incr_limit0 = 11 + qp_bpc_modifier;
+	rc->rc_quant_incr_limit1 = 11 + qp_bpc_modifier;
+
+	bpp_i  = (2 * (bpp - 6));
+	for (buf_i = 0; buf_i < DSC_NUM_BUF_RANGES; buf_i++) {
+		/* Read range_minqp and range_max_qp from qp tables */
+		rc->rc_range_params[buf_i].range_min_qp =
+			intel_lookup_range_min_qp(bpc, buf_i, bpp_i);
+		rc->rc_range_params[buf_i].range_max_qp =
+			intel_lookup_range_max_qp(bpc, buf_i, bpp_i);
+
+		/* Calculate range_bgp_offset */
+		if (bpp <= 6) {
+			rc->rc_range_params[buf_i].range_bpg_offset = ofs_und6[buf_i];
+		} else if (bpp <= 8) {
+			res = DIV_ROUND_UP(((bpp - 6) * (ofs_und8[buf_i] - ofs_und6[buf_i])), 2);
+			rc->rc_range_params[buf_i].range_bpg_offset =
+								ofs_und6[buf_i] + res;
+		} else if (bpp <= 12) {
+			rc->rc_range_params[buf_i].range_bpg_offset =
+								ofs_und8[buf_i];
+		} else if (bpp <= 15) {
+			res = DIV_ROUND_UP(((bpp - 12) * (ofs_und15[buf_i] - ofs_und12[buf_i])), 3);
+			rc->rc_range_params[buf_i].range_bpg_offset =
+								ofs_und12[buf_i] + res;
+		} else {
+			rc->rc_range_params[buf_i].range_bpg_offset =
+								ofs_und15[buf_i];
+		}
+	}
+}
+
+int intel_dsc_compute_params(struct intel_crtc_state *pipe_config)
+{
+	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	struct drm_dsc_config *vdsc_cfg = &pipe_config->dsc.config;
+	u16 compressed_bpp = pipe_config->dsc.compressed_bpp;
+	const struct rc_parameters *rc_params;
+	struct rc_parameters *rc = NULL;
+	u8 i = 0;
+
+	vdsc_cfg->pic_width = pipe_config->hw.adjusted_mode.crtc_hdisplay;
+	vdsc_cfg->slice_width = DIV_ROUND_UP(vdsc_cfg->pic_width,
+					     pipe_config->dsc.slice_count);
+
+	/* Gen 11 does not support YCbCr */
+	vdsc_cfg->simple_422 = false;
+	/* Gen 11 does not support VBR */
+	vdsc_cfg->vbr_enable = false;
+
+	/* Gen 11 only supports integral values of bpp */
+	vdsc_cfg->bits_per_pixel = compressed_bpp << 4;
+	vdsc_cfg->bits_per_component = pipe_config->pipe_bpp / 3;
+
+	for (i = 0; i < DSC_NUM_BUF_RANGES - 1; i++) {
+		/*
+		 * six 0s are appended to the lsb of each threshold value
+		 * internally in h/w.
+		 * Only 8 bits are allowed for programming RcBufThreshold
+		 */
+		vdsc_cfg->rc_buf_thresh[i] = rc_buf_thresh[i] >> 6;
+	}
+
+	/*
+	 * For 6bpp, RC Buffer threshold 12 and 13 need a different value
+	 * as per C Model
+	 */
+	if (compressed_bpp == 6) {
+		vdsc_cfg->rc_buf_thresh[12] = 0x7C;
+		vdsc_cfg->rc_buf_thresh[13] = 0x7D;
+	}
+
+	/*
+	 * From XE_LPD onwards we supports compression bpps in steps of 1
+	 * upto uncompressed bpp-1, hence add calculations for all the rc
+	 * parameters
+	 */
+	if (DISPLAY_VER(dev_priv) >= 13) {
+		rc = kmalloc(sizeof(*rc), GFP_KERNEL);
+		if (!rc)
+			return -ENOMEM;
+
+		calculate_rc_params(rc, vdsc_cfg);
+		rc_params = rc;
+	} else {
+		rc_params = get_rc_params(compressed_bpp,
+					  vdsc_cfg->bits_per_component);
+		if (!rc_params)
+			return -EINVAL;
+	}
+
+	vdsc_cfg->first_line_bpg_offset = rc_params->first_line_bpg_offset;
+	vdsc_cfg->initial_xmit_delay = rc_params->initial_xmit_delay;
+	vdsc_cfg->initial_offset = rc_params->initial_offset;
+	vdsc_cfg->flatness_min_qp = rc_params->flatness_min_qp;
+	vdsc_cfg->flatness_max_qp = rc_params->flatness_max_qp;
+	vdsc_cfg->rc_quant_incr_limit0 = rc_params->rc_quant_incr_limit0;
+	vdsc_cfg->rc_quant_incr_limit1 = rc_params->rc_quant_incr_limit1;
+
+	for (i = 0; i < DSC_NUM_BUF_RANGES; i++) {
+		vdsc_cfg->rc_range_params[i].range_min_qp =
+			rc_params->rc_range_params[i].range_min_qp;
+		vdsc_cfg->rc_range_params[i].range_max_qp =
+			rc_params->rc_range_params[i].range_max_qp;
+		/*
+		 * Range BPG Offset uses 2's complement and is only a 6 bits. So
+		 * mask it to get only 6 bits.
+		 */
+		vdsc_cfg->rc_range_params[i].range_bpg_offset =
+			rc_params->rc_range_params[i].range_bpg_offset &
+			DSC_RANGE_BPG_OFFSET_MASK;
+	}
+
+	/*
+	 * BitsPerComponent value determines mux_word_size:
+	 * When BitsPerComponent is less than or 10bpc, muxWordSize will be equal to
+	 * 48 bits otherwise 64
+	 */
+	if (vdsc_cfg->bits_per_component <= 10)
+		vdsc_cfg->mux_word_size = DSC_MUX_WORD_SIZE_8_10_BPC;
+	else
+		vdsc_cfg->mux_word_size = DSC_MUX_WORD_SIZE_12_BPC;
+
+	/* InitialScaleValue is a 6 bit value with 3 fractional bits (U3.3) */
+	vdsc_cfg->initial_scale_value = (vdsc_cfg->rc_model_size << 3) /
+		(vdsc_cfg->rc_model_size - vdsc_cfg->initial_offset);
+
+	kfree(rc);
+
+	return 0;
+}
+
+enum intel_display_power_domain
+intel_dsc_power_domain(struct intel_crtc *crtc, enum transcoder cpu_transcoder)
+{
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+
+	/*
+	 * VDSC/joining uses a separate power well, PW2, and requires
+	 * POWER_DOMAIN_TRANSCODER_VDSC_PW2 power domain in two cases:
+	 *
+	 *  - ICL eDP/DSI transcoder
+	 *  - Display version 12 (except RKL) pipe A
+	 *
+	 * For any other pipe, VDSC/joining uses the power well associated with
+	 * the pipe in use. Hence another reference on the pipe power domain
+	 * will suffice. (Except no VDSC/joining on ICL pipe A.)
+	 */
+	if (DISPLAY_VER(i915) == 12 && !IS_ROCKETLAKE(i915) && pipe == PIPE_A)
+		return POWER_DOMAIN_TRANSCODER_VDSC_PW2;
+	else if (is_pipe_dsc(crtc, cpu_transcoder))
+		return POWER_DOMAIN_PIPE(pipe);
+	else
+		return POWER_DOMAIN_TRANSCODER_VDSC_PW2;
+}
+
+static void intel_dsc_pps_configure(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	const struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config;
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+	enum pipe pipe = crtc->pipe;
+	u32 pps_val = 0;
+	u32 rc_buf_thresh_dword[4];
+	u32 rc_range_params_dword[8];
+	u8 num_vdsc_instances = (crtc_state->dsc.dsc_split) ? 2 : 1;
+	int i = 0;
+
+	if (crtc_state->bigjoiner_pipes)
+		num_vdsc_instances *= 2;
+
+	/* Populate PICTURE_PARAMETER_SET_0 registers */
+	pps_val = DSC_VER_MAJ | vdsc_cfg->dsc_version_minor <<
+		DSC_VER_MIN_SHIFT |
+		vdsc_cfg->bits_per_component << DSC_BPC_SHIFT |
+		vdsc_cfg->line_buf_depth << DSC_LINE_BUF_DEPTH_SHIFT;
+	if (vdsc_cfg->dsc_version_minor == 2)
+		pps_val |= DSC_ALT_ICH_SEL;
+	if (vdsc_cfg->block_pred_enable)
+		pps_val |= DSC_BLOCK_PREDICTION;
+	if (vdsc_cfg->convert_rgb)
+		pps_val |= DSC_COLOR_SPACE_CONVERSION;
+	if (vdsc_cfg->simple_422)
+		pps_val |= DSC_422_ENABLE;
+	if (vdsc_cfg->vbr_enable)
+		pps_val |= DSC_VBR_ENABLE;
+	drm_dbg_kms(&dev_priv->drm, "PPS0 = 0x%08x\n", pps_val);
+	if (!is_pipe_dsc(crtc, cpu_transcoder)) {
+		intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_0,
+			       pps_val);
+		/*
+		 * If 2 VDSC instances are needed, configure PPS for second
+		 * VDSC
+		 */
+		if (crtc_state->dsc.dsc_split)
+			intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_0,
+				       pps_val);
+	} else {
+		intel_de_write(dev_priv,
+			       ICL_DSC0_PICTURE_PARAMETER_SET_0(pipe),
+			       pps_val);
+		if (crtc_state->dsc.dsc_split)
+			intel_de_write(dev_priv,
+				       ICL_DSC1_PICTURE_PARAMETER_SET_0(pipe),
+				       pps_val);
+	}
+
+	/* Populate PICTURE_PARAMETER_SET_1 registers */
+	pps_val = 0;
+	pps_val |= DSC_BPP(vdsc_cfg->bits_per_pixel);
+	drm_dbg_kms(&dev_priv->drm, "PPS1 = 0x%08x\n", pps_val);
+	if (!is_pipe_dsc(crtc, cpu_transcoder)) {
+		intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_1,
+			       pps_val);
+		/*
+		 * If 2 VDSC instances are needed, configure PPS for second
+		 * VDSC
+		 */
+		if (crtc_state->dsc.dsc_split)
+			intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_1,
+				       pps_val);
+	} else {
+		intel_de_write(dev_priv,
+			       ICL_DSC0_PICTURE_PARAMETER_SET_1(pipe),
+			       pps_val);
+		if (crtc_state->dsc.dsc_split)
+			intel_de_write(dev_priv,
+				       ICL_DSC1_PICTURE_PARAMETER_SET_1(pipe),
+				       pps_val);
+	}
+
+	/* Populate PICTURE_PARAMETER_SET_2 registers */
+	pps_val = 0;
+	pps_val |= DSC_PIC_HEIGHT(vdsc_cfg->pic_height) |
+		DSC_PIC_WIDTH(vdsc_cfg->pic_width / num_vdsc_instances);
+	drm_dbg_kms(&dev_priv->drm, "PPS2 = 0x%08x\n", pps_val);
+	if (!is_pipe_dsc(crtc, cpu_transcoder)) {
+		intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_2,
+			       pps_val);
+		/*
+		 * If 2 VDSC instances are needed, configure PPS for second
+		 * VDSC
+		 */
+		if (crtc_state->dsc.dsc_split)
+			intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_2,
+				       pps_val);
+	} else {
+		intel_de_write(dev_priv,
+			       ICL_DSC0_PICTURE_PARAMETER_SET_2(pipe),
+			       pps_val);
+		if (crtc_state->dsc.dsc_split)
+			intel_de_write(dev_priv,
+				       ICL_DSC1_PICTURE_PARAMETER_SET_2(pipe),
+				       pps_val);
+	}
+
+	/* Populate PICTURE_PARAMETER_SET_3 registers */
+	pps_val = 0;
+	pps_val |= DSC_SLICE_HEIGHT(vdsc_cfg->slice_height) |
+		DSC_SLICE_WIDTH(vdsc_cfg->slice_width);
+	drm_dbg_kms(&dev_priv->drm, "PPS3 = 0x%08x\n", pps_val);
+	if (!is_pipe_dsc(crtc, cpu_transcoder)) {
+		intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_3,
+			       pps_val);
+		/*
+		 * If 2 VDSC instances are needed, configure PPS for second
+		 * VDSC
+		 */
+		if (crtc_state->dsc.dsc_split)
+			intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_3,
+				       pps_val);
+	} else {
+		intel_de_write(dev_priv,
+			       ICL_DSC0_PICTURE_PARAMETER_SET_3(pipe),
+			       pps_val);
+		if (crtc_state->dsc.dsc_split)
+			intel_de_write(dev_priv,
+				       ICL_DSC1_PICTURE_PARAMETER_SET_3(pipe),
+				       pps_val);
+	}
+
+	/* Populate PICTURE_PARAMETER_SET_4 registers */
+	pps_val = 0;
+	pps_val |= DSC_INITIAL_XMIT_DELAY(vdsc_cfg->initial_xmit_delay) |
+		DSC_INITIAL_DEC_DELAY(vdsc_cfg->initial_dec_delay);
+	drm_dbg_kms(&dev_priv->drm, "PPS4 = 0x%08x\n", pps_val);
+	if (!is_pipe_dsc(crtc, cpu_transcoder)) {
+		intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_4,
+			       pps_val);
+		/*
+		 * If 2 VDSC instances are needed, configure PPS for second
+		 * VDSC
+		 */
+		if (crtc_state->dsc.dsc_split)
+			intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_4,
+				       pps_val);
+	} else {
+		intel_de_write(dev_priv,
+			       ICL_DSC0_PICTURE_PARAMETER_SET_4(pipe),
+			       pps_val);
+		if (crtc_state->dsc.dsc_split)
+			intel_de_write(dev_priv,
+				       ICL_DSC1_PICTURE_PARAMETER_SET_4(pipe),
+				       pps_val);
+	}
+
+	/* Populate PICTURE_PARAMETER_SET_5 registers */
+	pps_val = 0;
+	pps_val |= DSC_SCALE_INC_INT(vdsc_cfg->scale_increment_interval) |
+		DSC_SCALE_DEC_INT(vdsc_cfg->scale_decrement_interval);
+	drm_dbg_kms(&dev_priv->drm, "PPS5 = 0x%08x\n", pps_val);
+	if (!is_pipe_dsc(crtc, cpu_transcoder)) {
+		intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_5,
+			       pps_val);
+		/*
+		 * If 2 VDSC instances are needed, configure PPS for second
+		 * VDSC
+		 */
+		if (crtc_state->dsc.dsc_split)
+			intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_5,
+				       pps_val);
+	} else {
+		intel_de_write(dev_priv,
+			       ICL_DSC0_PICTURE_PARAMETER_SET_5(pipe),
+			       pps_val);
+		if (crtc_state->dsc.dsc_split)
+			intel_de_write(dev_priv,
+				       ICL_DSC1_PICTURE_PARAMETER_SET_5(pipe),
+				       pps_val);
+	}
+
+	/* Populate PICTURE_PARAMETER_SET_6 registers */
+	pps_val = 0;
+	pps_val |= DSC_INITIAL_SCALE_VALUE(vdsc_cfg->initial_scale_value) |
+		DSC_FIRST_LINE_BPG_OFFSET(vdsc_cfg->first_line_bpg_offset) |
+		DSC_FLATNESS_MIN_QP(vdsc_cfg->flatness_min_qp) |
+		DSC_FLATNESS_MAX_QP(vdsc_cfg->flatness_max_qp);
+	drm_dbg_kms(&dev_priv->drm, "PPS6 = 0x%08x\n", pps_val);
+	if (!is_pipe_dsc(crtc, cpu_transcoder)) {
+		intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_6,
+			       pps_val);
+		/*
+		 * If 2 VDSC instances are needed, configure PPS for second
+		 * VDSC
+		 */
+		if (crtc_state->dsc.dsc_split)
+			intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_6,
+				       pps_val);
+	} else {
+		intel_de_write(dev_priv,
+			       ICL_DSC0_PICTURE_PARAMETER_SET_6(pipe),
+			       pps_val);
+		if (crtc_state->dsc.dsc_split)
+			intel_de_write(dev_priv,
+				       ICL_DSC1_PICTURE_PARAMETER_SET_6(pipe),
+				       pps_val);
+	}
+
+	/* Populate PICTURE_PARAMETER_SET_7 registers */
+	pps_val = 0;
+	pps_val |= DSC_SLICE_BPG_OFFSET(vdsc_cfg->slice_bpg_offset) |
+		DSC_NFL_BPG_OFFSET(vdsc_cfg->nfl_bpg_offset);
+	drm_dbg_kms(&dev_priv->drm, "PPS7 = 0x%08x\n", pps_val);
+	if (!is_pipe_dsc(crtc, cpu_transcoder)) {
+		intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_7,
+			       pps_val);
+		/*
+		 * If 2 VDSC instances are needed, configure PPS for second
+		 * VDSC
+		 */
+		if (crtc_state->dsc.dsc_split)
+			intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_7,
+				       pps_val);
+	} else {
+		intel_de_write(dev_priv,
+			       ICL_DSC0_PICTURE_PARAMETER_SET_7(pipe),
+			       pps_val);
+		if (crtc_state->dsc.dsc_split)
+			intel_de_write(dev_priv,
+				       ICL_DSC1_PICTURE_PARAMETER_SET_7(pipe),
+				       pps_val);
+	}
+
+	/* Populate PICTURE_PARAMETER_SET_8 registers */
+	pps_val = 0;
+	pps_val |= DSC_FINAL_OFFSET(vdsc_cfg->final_offset) |
+		DSC_INITIAL_OFFSET(vdsc_cfg->initial_offset);
+	drm_dbg_kms(&dev_priv->drm, "PPS8 = 0x%08x\n", pps_val);
+	if (!is_pipe_dsc(crtc, cpu_transcoder)) {
+		intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_8,
+			       pps_val);
+		/*
+		 * If 2 VDSC instances are needed, configure PPS for second
+		 * VDSC
+		 */
+		if (crtc_state->dsc.dsc_split)
+			intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_8,
+				       pps_val);
+	} else {
+		intel_de_write(dev_priv,
+			       ICL_DSC0_PICTURE_PARAMETER_SET_8(pipe),
+			       pps_val);
+		if (crtc_state->dsc.dsc_split)
+			intel_de_write(dev_priv,
+				       ICL_DSC1_PICTURE_PARAMETER_SET_8(pipe),
+				       pps_val);
+	}
+
+	/* Populate PICTURE_PARAMETER_SET_9 registers */
+	pps_val = 0;
+	pps_val |= DSC_RC_MODEL_SIZE(vdsc_cfg->rc_model_size) |
+		DSC_RC_EDGE_FACTOR(DSC_RC_EDGE_FACTOR_CONST);
+	drm_dbg_kms(&dev_priv->drm, "PPS9 = 0x%08x\n", pps_val);
+	if (!is_pipe_dsc(crtc, cpu_transcoder)) {
+		intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_9,
+			       pps_val);
+		/*
+		 * If 2 VDSC instances are needed, configure PPS for second
+		 * VDSC
+		 */
+		if (crtc_state->dsc.dsc_split)
+			intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_9,
+				       pps_val);
+	} else {
+		intel_de_write(dev_priv,
+			       ICL_DSC0_PICTURE_PARAMETER_SET_9(pipe),
+			       pps_val);
+		if (crtc_state->dsc.dsc_split)
+			intel_de_write(dev_priv,
+				       ICL_DSC1_PICTURE_PARAMETER_SET_9(pipe),
+				       pps_val);
+	}
+
+	/* Populate PICTURE_PARAMETER_SET_10 registers */
+	pps_val = 0;
+	pps_val |= DSC_RC_QUANT_INC_LIMIT0(vdsc_cfg->rc_quant_incr_limit0) |
+		DSC_RC_QUANT_INC_LIMIT1(vdsc_cfg->rc_quant_incr_limit1) |
+		DSC_RC_TARGET_OFF_HIGH(DSC_RC_TGT_OFFSET_HI_CONST) |
+		DSC_RC_TARGET_OFF_LOW(DSC_RC_TGT_OFFSET_LO_CONST);
+	drm_dbg_kms(&dev_priv->drm, "PPS10 = 0x%08x\n", pps_val);
+	if (!is_pipe_dsc(crtc, cpu_transcoder)) {
+		intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_10,
+			       pps_val);
+		/*
+		 * If 2 VDSC instances are needed, configure PPS for second
+		 * VDSC
+		 */
+		if (crtc_state->dsc.dsc_split)
+			intel_de_write(dev_priv,
+				       DSCC_PICTURE_PARAMETER_SET_10, pps_val);
+	} else {
+		intel_de_write(dev_priv,
+			       ICL_DSC0_PICTURE_PARAMETER_SET_10(pipe),
+			       pps_val);
+		if (crtc_state->dsc.dsc_split)
+			intel_de_write(dev_priv,
+				       ICL_DSC1_PICTURE_PARAMETER_SET_10(pipe),
+				       pps_val);
+	}
+
+	/* Populate Picture parameter set 16 */
+	pps_val = 0;
+	pps_val |= DSC_SLICE_CHUNK_SIZE(vdsc_cfg->slice_chunk_size) |
+		DSC_SLICE_PER_LINE((vdsc_cfg->pic_width / num_vdsc_instances) /
+				   vdsc_cfg->slice_width) |
+		DSC_SLICE_ROW_PER_FRAME(vdsc_cfg->pic_height /
+					vdsc_cfg->slice_height);
+	drm_dbg_kms(&dev_priv->drm, "PPS16 = 0x%08x\n", pps_val);
+	if (!is_pipe_dsc(crtc, cpu_transcoder)) {
+		intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_16,
+			       pps_val);
+		/*
+		 * If 2 VDSC instances are needed, configure PPS for second
+		 * VDSC
+		 */
+		if (crtc_state->dsc.dsc_split)
+			intel_de_write(dev_priv,
+				       DSCC_PICTURE_PARAMETER_SET_16, pps_val);
+	} else {
+		intel_de_write(dev_priv,
+			       ICL_DSC0_PICTURE_PARAMETER_SET_16(pipe),
+			       pps_val);
+		if (crtc_state->dsc.dsc_split)
+			intel_de_write(dev_priv,
+				       ICL_DSC1_PICTURE_PARAMETER_SET_16(pipe),
+				       pps_val);
+	}
+
+	/* Populate the RC_BUF_THRESH registers */
+	memset(rc_buf_thresh_dword, 0, sizeof(rc_buf_thresh_dword));
+	for (i = 0; i < DSC_NUM_BUF_RANGES - 1; i++) {
+		rc_buf_thresh_dword[i / 4] |=
+			(u32)(vdsc_cfg->rc_buf_thresh[i] <<
+			      BITS_PER_BYTE * (i % 4));
+		drm_dbg_kms(&dev_priv->drm, "RC_BUF_THRESH_%d = 0x%08x\n", i,
+			    rc_buf_thresh_dword[i / 4]);
+	}
+	if (!is_pipe_dsc(crtc, cpu_transcoder)) {
+		intel_de_write(dev_priv, DSCA_RC_BUF_THRESH_0,
+			       rc_buf_thresh_dword[0]);
+		intel_de_write(dev_priv, DSCA_RC_BUF_THRESH_0_UDW,
+			       rc_buf_thresh_dword[1]);
+		intel_de_write(dev_priv, DSCA_RC_BUF_THRESH_1,
+			       rc_buf_thresh_dword[2]);
+		intel_de_write(dev_priv, DSCA_RC_BUF_THRESH_1_UDW,
+			       rc_buf_thresh_dword[3]);
+		if (crtc_state->dsc.dsc_split) {
+			intel_de_write(dev_priv, DSCC_RC_BUF_THRESH_0,
+				       rc_buf_thresh_dword[0]);
+			intel_de_write(dev_priv, DSCC_RC_BUF_THRESH_0_UDW,
+				       rc_buf_thresh_dword[1]);
+			intel_de_write(dev_priv, DSCC_RC_BUF_THRESH_1,
+				       rc_buf_thresh_dword[2]);
+			intel_de_write(dev_priv, DSCC_RC_BUF_THRESH_1_UDW,
+				       rc_buf_thresh_dword[3]);
+		}
+	} else {
+		intel_de_write(dev_priv, ICL_DSC0_RC_BUF_THRESH_0(pipe),
+			       rc_buf_thresh_dword[0]);
+		intel_de_write(dev_priv, ICL_DSC0_RC_BUF_THRESH_0_UDW(pipe),
+			       rc_buf_thresh_dword[1]);
+		intel_de_write(dev_priv, ICL_DSC0_RC_BUF_THRESH_1(pipe),
+			       rc_buf_thresh_dword[2]);
+		intel_de_write(dev_priv, ICL_DSC0_RC_BUF_THRESH_1_UDW(pipe),
+			       rc_buf_thresh_dword[3]);
+		if (crtc_state->dsc.dsc_split) {
+			intel_de_write(dev_priv,
+				       ICL_DSC1_RC_BUF_THRESH_0(pipe),
+				       rc_buf_thresh_dword[0]);
+			intel_de_write(dev_priv,
+				       ICL_DSC1_RC_BUF_THRESH_0_UDW(pipe),
+				       rc_buf_thresh_dword[1]);
+			intel_de_write(dev_priv,
+				       ICL_DSC1_RC_BUF_THRESH_1(pipe),
+				       rc_buf_thresh_dword[2]);
+			intel_de_write(dev_priv,
+				       ICL_DSC1_RC_BUF_THRESH_1_UDW(pipe),
+				       rc_buf_thresh_dword[3]);
+		}
+	}
+
+	/* Populate the RC_RANGE_PARAMETERS registers */
+	memset(rc_range_params_dword, 0, sizeof(rc_range_params_dword));
+	for (i = 0; i < DSC_NUM_BUF_RANGES; i++) {
+		rc_range_params_dword[i / 2] |=
+			(u32)(((vdsc_cfg->rc_range_params[i].range_bpg_offset <<
+				RC_BPG_OFFSET_SHIFT) |
+			       (vdsc_cfg->rc_range_params[i].range_max_qp <<
+				RC_MAX_QP_SHIFT) |
+			       (vdsc_cfg->rc_range_params[i].range_min_qp <<
+				RC_MIN_QP_SHIFT)) << 16 * (i % 2));
+		drm_dbg_kms(&dev_priv->drm, "RC_RANGE_PARAM_%d = 0x%08x\n", i,
+			    rc_range_params_dword[i / 2]);
+	}
+	if (!is_pipe_dsc(crtc, cpu_transcoder)) {
+		intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_0,
+			       rc_range_params_dword[0]);
+		intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_0_UDW,
+			       rc_range_params_dword[1]);
+		intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_1,
+			       rc_range_params_dword[2]);
+		intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_1_UDW,
+			       rc_range_params_dword[3]);
+		intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_2,
+			       rc_range_params_dword[4]);
+		intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_2_UDW,
+			       rc_range_params_dword[5]);
+		intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_3,
+			       rc_range_params_dword[6]);
+		intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_3_UDW,
+			       rc_range_params_dword[7]);
+		if (crtc_state->dsc.dsc_split) {
+			intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_0,
+				       rc_range_params_dword[0]);
+			intel_de_write(dev_priv,
+				       DSCC_RC_RANGE_PARAMETERS_0_UDW,
+				       rc_range_params_dword[1]);
+			intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_1,
+				       rc_range_params_dword[2]);
+			intel_de_write(dev_priv,
+				       DSCC_RC_RANGE_PARAMETERS_1_UDW,
+				       rc_range_params_dword[3]);
+			intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_2,
+				       rc_range_params_dword[4]);
+			intel_de_write(dev_priv,
+				       DSCC_RC_RANGE_PARAMETERS_2_UDW,
+				       rc_range_params_dword[5]);
+			intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_3,
+				       rc_range_params_dword[6]);
+			intel_de_write(dev_priv,
+				       DSCC_RC_RANGE_PARAMETERS_3_UDW,
+				       rc_range_params_dword[7]);
+		}
+	} else {
+		intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_0(pipe),
+			       rc_range_params_dword[0]);
+		intel_de_write(dev_priv,
+			       ICL_DSC0_RC_RANGE_PARAMETERS_0_UDW(pipe),
+			       rc_range_params_dword[1]);
+		intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_1(pipe),
+			       rc_range_params_dword[2]);
+		intel_de_write(dev_priv,
+			       ICL_DSC0_RC_RANGE_PARAMETERS_1_UDW(pipe),
+			       rc_range_params_dword[3]);
+		intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_2(pipe),
+			       rc_range_params_dword[4]);
+		intel_de_write(dev_priv,
+			       ICL_DSC0_RC_RANGE_PARAMETERS_2_UDW(pipe),
+			       rc_range_params_dword[5]);
+		intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_3(pipe),
+			       rc_range_params_dword[6]);
+		intel_de_write(dev_priv,
+			       ICL_DSC0_RC_RANGE_PARAMETERS_3_UDW(pipe),
+			       rc_range_params_dword[7]);
+		if (crtc_state->dsc.dsc_split) {
+			intel_de_write(dev_priv,
+				       ICL_DSC1_RC_RANGE_PARAMETERS_0(pipe),
+				       rc_range_params_dword[0]);
+			intel_de_write(dev_priv,
+				       ICL_DSC1_RC_RANGE_PARAMETERS_0_UDW(pipe),
+				       rc_range_params_dword[1]);
+			intel_de_write(dev_priv,
+				       ICL_DSC1_RC_RANGE_PARAMETERS_1(pipe),
+				       rc_range_params_dword[2]);
+			intel_de_write(dev_priv,
+				       ICL_DSC1_RC_RANGE_PARAMETERS_1_UDW(pipe),
+				       rc_range_params_dword[3]);
+			intel_de_write(dev_priv,
+				       ICL_DSC1_RC_RANGE_PARAMETERS_2(pipe),
+				       rc_range_params_dword[4]);
+			intel_de_write(dev_priv,
+				       ICL_DSC1_RC_RANGE_PARAMETERS_2_UDW(pipe),
+				       rc_range_params_dword[5]);
+			intel_de_write(dev_priv,
+				       ICL_DSC1_RC_RANGE_PARAMETERS_3(pipe),
+				       rc_range_params_dword[6]);
+			intel_de_write(dev_priv,
+				       ICL_DSC1_RC_RANGE_PARAMETERS_3_UDW(pipe),
+				       rc_range_params_dword[7]);
+		}
+	}
+}
+
+void intel_dsc_dsi_pps_write(struct intel_encoder *encoder,
+			     const struct intel_crtc_state *crtc_state)
+{
+	const struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config;
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	struct mipi_dsi_device *dsi;
+	struct drm_dsc_picture_parameter_set pps;
+	enum port port;
+
+	if (!crtc_state->dsc.compression_enable)
+		return;
+
+	drm_dsc_pps_payload_pack(&pps, vdsc_cfg);
+
+	for_each_dsi_port(port, intel_dsi->ports) {
+		dsi = intel_dsi->dsi_hosts[port]->device;
+
+		mipi_dsi_picture_parameter_set(dsi, &pps);
+		mipi_dsi_compression_mode(dsi, true);
+	}
+}
+
+void intel_dsc_dp_pps_write(struct intel_encoder *encoder,
+			    const struct intel_crtc_state *crtc_state)
+{
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	const struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config;
+	struct drm_dsc_pps_infoframe dp_dsc_pps_sdp;
+
+	if (!crtc_state->dsc.compression_enable)
+		return;
+
+	/* Prepare DP SDP PPS header as per DP 1.4 spec, Table 2-123 */
+	drm_dsc_dp_pps_header_init(&dp_dsc_pps_sdp.pps_header);
+
+	/* Fill the PPS payload bytes as per DSC spec 1.2 Table 4-1 */
+	drm_dsc_pps_payload_pack(&dp_dsc_pps_sdp.pps_payload, vdsc_cfg);
+
+	dig_port->write_infoframe(encoder, crtc_state,
+				  DP_SDP_PPS, &dp_dsc_pps_sdp,
+				  sizeof(dp_dsc_pps_sdp));
+}
+
+static i915_reg_t dss_ctl1_reg(struct intel_crtc *crtc, enum transcoder cpu_transcoder)
+{
+	return is_pipe_dsc(crtc, cpu_transcoder) ?
+		ICL_PIPE_DSS_CTL1(crtc->pipe) : DSS_CTL1;
+}
+
+static i915_reg_t dss_ctl2_reg(struct intel_crtc *crtc, enum transcoder cpu_transcoder)
+{
+	return is_pipe_dsc(crtc, cpu_transcoder) ?
+		ICL_PIPE_DSS_CTL2(crtc->pipe) : DSS_CTL2;
+}
+
+void intel_uncompressed_joiner_enable(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	u32 dss_ctl1_val = 0;
+
+	if (crtc_state->bigjoiner_pipes && !crtc_state->dsc.compression_enable) {
+		if (intel_crtc_is_bigjoiner_slave(crtc_state))
+			dss_ctl1_val |= UNCOMPRESSED_JOINER_SLAVE;
+		else
+			dss_ctl1_val |= UNCOMPRESSED_JOINER_MASTER;
+
+		intel_de_write(dev_priv, dss_ctl1_reg(crtc, crtc_state->cpu_transcoder), dss_ctl1_val);
+	}
+}
+
+void intel_dsc_enable(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	u32 dss_ctl1_val = 0;
+	u32 dss_ctl2_val = 0;
+
+	if (!crtc_state->dsc.compression_enable)
+		return;
+
+	intel_dsc_pps_configure(crtc_state);
+
+	dss_ctl2_val |= LEFT_BRANCH_VDSC_ENABLE;
+	if (crtc_state->dsc.dsc_split) {
+		dss_ctl2_val |= RIGHT_BRANCH_VDSC_ENABLE;
+		dss_ctl1_val |= JOINER_ENABLE;
+	}
+	if (crtc_state->bigjoiner_pipes) {
+		dss_ctl1_val |= BIG_JOINER_ENABLE;
+		if (!intel_crtc_is_bigjoiner_slave(crtc_state))
+			dss_ctl1_val |= MASTER_BIG_JOINER_ENABLE;
+	}
+	intel_de_write(dev_priv, dss_ctl1_reg(crtc, crtc_state->cpu_transcoder), dss_ctl1_val);
+	intel_de_write(dev_priv, dss_ctl2_reg(crtc, crtc_state->cpu_transcoder), dss_ctl2_val);
+}
+
+void intel_dsc_disable(const struct intel_crtc_state *old_crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+
+	/* Disable only if either of them is enabled */
+	if (old_crtc_state->dsc.compression_enable ||
+	    old_crtc_state->bigjoiner_pipes) {
+		intel_de_write(dev_priv, dss_ctl1_reg(crtc, old_crtc_state->cpu_transcoder), 0);
+		intel_de_write(dev_priv, dss_ctl2_reg(crtc, old_crtc_state->cpu_transcoder), 0);
+	}
+}
+
+void intel_dsc_get_config(struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config;
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+	enum pipe pipe = crtc->pipe;
+	enum intel_display_power_domain power_domain;
+	intel_wakeref_t wakeref;
+	u32 dss_ctl1, dss_ctl2, val;
+
+	if (!intel_dsc_source_support(crtc_state))
+		return;
+
+	power_domain = intel_dsc_power_domain(crtc, cpu_transcoder);
+
+	wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
+	if (!wakeref)
+		return;
+
+	dss_ctl1 = intel_de_read(dev_priv, dss_ctl1_reg(crtc, cpu_transcoder));
+	dss_ctl2 = intel_de_read(dev_priv, dss_ctl2_reg(crtc, cpu_transcoder));
+
+	crtc_state->dsc.compression_enable = dss_ctl2 & LEFT_BRANCH_VDSC_ENABLE;
+	if (!crtc_state->dsc.compression_enable)
+		goto out;
+
+	crtc_state->dsc.dsc_split = (dss_ctl2 & RIGHT_BRANCH_VDSC_ENABLE) &&
+		(dss_ctl1 & JOINER_ENABLE);
+
+	/* FIXME: add more state readout as needed */
+
+	/* PPS1 */
+	if (!is_pipe_dsc(crtc, cpu_transcoder))
+		val = intel_de_read(dev_priv, DSCA_PICTURE_PARAMETER_SET_1);
+	else
+		val = intel_de_read(dev_priv,
+				    ICL_DSC0_PICTURE_PARAMETER_SET_1(pipe));
+	vdsc_cfg->bits_per_pixel = val;
+	crtc_state->dsc.compressed_bpp = vdsc_cfg->bits_per_pixel >> 4;
+out:
+	intel_display_power_put(dev_priv, power_domain, wakeref);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_vdsc.h b/drivers/gpu/drm/i915/display/intel_vdsc.h
new file mode 100644
index 000000000..8763f00fa
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_vdsc.h
@@ -0,0 +1,30 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_VDSC_H__
+#define __INTEL_VDSC_H__
+
+#include <linux/types.h>
+
+enum transcoder;
+struct intel_crtc;
+struct intel_crtc_state;
+struct intel_encoder;
+
+bool intel_dsc_source_support(const struct intel_crtc_state *crtc_state);
+void intel_uncompressed_joiner_enable(const struct intel_crtc_state *crtc_state);
+void intel_dsc_enable(const struct intel_crtc_state *crtc_state);
+void intel_dsc_disable(const struct intel_crtc_state *crtc_state);
+int intel_dsc_compute_params(struct intel_crtc_state *pipe_config);
+void intel_dsc_get_config(struct intel_crtc_state *crtc_state);
+enum intel_display_power_domain
+intel_dsc_power_domain(struct intel_crtc *crtc, enum transcoder cpu_transcoder);
+struct intel_crtc *intel_dsc_get_bigjoiner_secondary(const struct intel_crtc *primary_crtc);
+void intel_dsc_dsi_pps_write(struct intel_encoder *encoder,
+			     const struct intel_crtc_state *crtc_state);
+void intel_dsc_dp_pps_write(struct intel_encoder *encoder,
+			    const struct intel_crtc_state *crtc_state);
+
+#endif /* __INTEL_VDSC_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_vga.c b/drivers/gpu/drm/i915/display/intel_vga.c
new file mode 100644
index 000000000..b5d058404
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_vga.c
@@ -0,0 +1,167 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#include <linux/pci.h>
+#include <linux/vgaarb.h>
+
+#include <drm/i915_drm.h>
+#include <video/vga.h>
+
+#include "i915_drv.h"
+#include "intel_de.h"
+#include "intel_vga.h"
+
+static i915_reg_t intel_vga_cntrl_reg(struct drm_i915_private *i915)
+{
+	if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915))
+		return VLV_VGACNTRL;
+	else if (DISPLAY_VER(i915) >= 5)
+		return CPU_VGACNTRL;
+	else
+		return VGACNTRL;
+}
+
+/* Disable the VGA plane that we never use */
+void intel_vga_disable(struct drm_i915_private *dev_priv)
+{
+	struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
+	i915_reg_t vga_reg = intel_vga_cntrl_reg(dev_priv);
+	u8 sr1;
+
+	if (intel_de_read(dev_priv, vga_reg) & VGA_DISP_DISABLE)
+		return;
+
+	/* WaEnableVGAAccessThroughIOPort:ctg,elk,ilk,snb,ivb,vlv,hsw */
+	vga_get_uninterruptible(pdev, VGA_RSRC_LEGACY_IO);
+	outb(0x01, VGA_SEQ_I);
+	sr1 = inb(VGA_SEQ_D);
+	outb(sr1 | VGA_SR01_SCREEN_OFF, VGA_SEQ_D);
+	vga_put(pdev, VGA_RSRC_LEGACY_IO);
+	udelay(300);
+
+	intel_de_write(dev_priv, vga_reg, VGA_DISP_DISABLE);
+	intel_de_posting_read(dev_priv, vga_reg);
+}
+
+void intel_vga_redisable_power_on(struct drm_i915_private *dev_priv)
+{
+	i915_reg_t vga_reg = intel_vga_cntrl_reg(dev_priv);
+
+	if (!(intel_de_read(dev_priv, vga_reg) & VGA_DISP_DISABLE)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Something enabled VGA plane, disabling it\n");
+		intel_vga_disable(dev_priv);
+	}
+}
+
+void intel_vga_redisable(struct drm_i915_private *i915)
+{
+	intel_wakeref_t wakeref;
+
+	/*
+	 * This function can be called both from intel_modeset_setup_hw_state or
+	 * at a very early point in our resume sequence, where the power well
+	 * structures are not yet restored. Since this function is at a very
+	 * paranoid "someone might have enabled VGA while we were not looking"
+	 * level, just check if the power well is enabled instead of trying to
+	 * follow the "don't touch the power well if we don't need it" policy
+	 * the rest of the driver uses.
+	 */
+	wakeref = intel_display_power_get_if_enabled(i915, POWER_DOMAIN_VGA);
+	if (!wakeref)
+		return;
+
+	intel_vga_redisable_power_on(i915);
+
+	intel_display_power_put(i915, POWER_DOMAIN_VGA, wakeref);
+}
+
+void intel_vga_reset_io_mem(struct drm_i915_private *i915)
+{
+	struct pci_dev *pdev = to_pci_dev(i915->drm.dev);
+
+	/*
+	 * After we re-enable the power well, if we touch VGA register 0x3d5
+	 * we'll get unclaimed register interrupts. This stops after we write
+	 * anything to the VGA MSR register. The vgacon module uses this
+	 * register all the time, so if we unbind our driver and, as a
+	 * consequence, bind vgacon, we'll get stuck in an infinite loop at
+	 * console_unlock(). So make here we touch the VGA MSR register, making
+	 * sure vgacon can keep working normally without triggering interrupts
+	 * and error messages.
+	 */
+	vga_get_uninterruptible(pdev, VGA_RSRC_LEGACY_IO);
+	outb(inb(VGA_MIS_R), VGA_MIS_W);
+	vga_put(pdev, VGA_RSRC_LEGACY_IO);
+}
+
+static int
+intel_vga_set_state(struct drm_i915_private *i915, bool enable_decode)
+{
+	unsigned int reg = DISPLAY_VER(i915) >= 6 ? SNB_GMCH_CTRL : INTEL_GMCH_CTRL;
+	u16 gmch_ctrl;
+
+	if (pci_read_config_word(i915->bridge_dev, reg, &gmch_ctrl)) {
+		drm_err(&i915->drm, "failed to read control word\n");
+		return -EIO;
+	}
+
+	if (!!(gmch_ctrl & INTEL_GMCH_VGA_DISABLE) == !enable_decode)
+		return 0;
+
+	if (enable_decode)
+		gmch_ctrl &= ~INTEL_GMCH_VGA_DISABLE;
+	else
+		gmch_ctrl |= INTEL_GMCH_VGA_DISABLE;
+
+	if (pci_write_config_word(i915->bridge_dev, reg, gmch_ctrl)) {
+		drm_err(&i915->drm, "failed to write control word\n");
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static unsigned int
+intel_vga_set_decode(struct pci_dev *pdev, bool enable_decode)
+{
+	struct drm_i915_private *i915 = pdev_to_i915(pdev);
+
+	intel_vga_set_state(i915, enable_decode);
+
+	if (enable_decode)
+		return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
+		       VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
+	else
+		return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
+}
+
+int intel_vga_register(struct drm_i915_private *i915)
+{
+
+	struct pci_dev *pdev = to_pci_dev(i915->drm.dev);
+	int ret;
+
+	/*
+	 * If we have > 1 VGA cards, then we need to arbitrate access to the
+	 * common VGA resources.
+	 *
+	 * If we are a secondary display controller (!PCI_DISPLAY_CLASS_VGA),
+	 * then we do not take part in VGA arbitration and the
+	 * vga_client_register() fails with -ENODEV.
+	 */
+	ret = vga_client_register(pdev, intel_vga_set_decode);
+	if (ret && ret != -ENODEV)
+		return ret;
+
+	return 0;
+}
+
+void intel_vga_unregister(struct drm_i915_private *i915)
+{
+	struct pci_dev *pdev = to_pci_dev(i915->drm.dev);
+
+	vga_client_unregister(pdev);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_vga.h b/drivers/gpu/drm/i915/display/intel_vga.h
new file mode 100644
index 000000000..ba5b55b91
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_vga.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_VGA_H__
+#define __INTEL_VGA_H__
+
+struct drm_i915_private;
+
+void intel_vga_reset_io_mem(struct drm_i915_private *i915);
+void intel_vga_disable(struct drm_i915_private *i915);
+void intel_vga_redisable(struct drm_i915_private *i915);
+void intel_vga_redisable_power_on(struct drm_i915_private *i915);
+int intel_vga_register(struct drm_i915_private *i915);
+void intel_vga_unregister(struct drm_i915_private *i915);
+
+#endif /* __INTEL_VGA_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c
new file mode 100644
index 000000000..5eac99021
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_vrr.c
@@ -0,0 +1,262 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2020 Intel Corporation
+ *
+ */
+
+#include "i915_drv.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_vrr.h"
+
+bool intel_vrr_is_capable(struct intel_connector *connector)
+{
+	const struct drm_display_info *info = &connector->base.display_info;
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+	struct intel_dp *intel_dp;
+
+	/*
+	 * DP Sink is capable of VRR video timings if
+	 * Ignore MSA bit is set in DPCD.
+	 * EDID monitor range also should be atleast 10 for reasonable
+	 * Adaptive Sync or Variable Refresh Rate end user experience.
+	 */
+	switch (connector->base.connector_type) {
+	case DRM_MODE_CONNECTOR_eDP:
+		if (!connector->panel.vbt.vrr)
+			return false;
+		fallthrough;
+	case DRM_MODE_CONNECTOR_DisplayPort:
+		intel_dp = intel_attached_dp(connector);
+
+		if (!drm_dp_sink_can_do_video_without_timing_msa(intel_dp->dpcd))
+			return false;
+
+		break;
+	default:
+		return false;
+	}
+
+	return HAS_VRR(i915) &&
+		info->monitor_range.max_vfreq - info->monitor_range.min_vfreq > 10;
+}
+
+void
+intel_vrr_check_modeset(struct intel_atomic_state *state)
+{
+	int i;
+	struct intel_crtc_state *old_crtc_state, *new_crtc_state;
+	struct intel_crtc *crtc;
+
+	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
+					    new_crtc_state, i) {
+		if (new_crtc_state->uapi.vrr_enabled !=
+		    old_crtc_state->uapi.vrr_enabled)
+			new_crtc_state->uapi.mode_changed = true;
+	}
+}
+
+/*
+ * Without VRR registers get latched at:
+ *  vblank_start
+ *
+ * With VRR the earliest registers can get latched is:
+ *  intel_vrr_vmin_vblank_start(), which if we want to maintain
+ *  the correct min vtotal is >=vblank_start+1
+ *
+ * The latest point registers can get latched is the vmax decision boundary:
+ *  intel_vrr_vmax_vblank_start()
+ *
+ * Between those two points the vblank exit starts (and hence registers get
+ * latched) ASAP after a push is sent.
+ *
+ * framestart_delay is programmable 1-4.
+ */
+static int intel_vrr_vblank_exit_length(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+
+	/* The hw imposes the extra scanline before frame start */
+	if (DISPLAY_VER(i915) >= 13)
+		return crtc_state->vrr.guardband + crtc_state->framestart_delay + 1;
+	else
+		return crtc_state->vrr.pipeline_full + crtc_state->framestart_delay + 1;
+}
+
+int intel_vrr_vmin_vblank_start(const struct intel_crtc_state *crtc_state)
+{
+	/* Min vblank actually determined by flipline that is always >=vmin+1 */
+	return crtc_state->vrr.vmin + 1 - intel_vrr_vblank_exit_length(crtc_state);
+}
+
+int intel_vrr_vmax_vblank_start(const struct intel_crtc_state *crtc_state)
+{
+	return crtc_state->vrr.vmax - intel_vrr_vblank_exit_length(crtc_state);
+}
+
+void
+intel_vrr_compute_config(struct intel_crtc_state *crtc_state,
+			 struct drm_connector_state *conn_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	struct intel_connector *connector =
+		to_intel_connector(conn_state->connector);
+	struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode;
+	const struct drm_display_info *info = &connector->base.display_info;
+	int vmin, vmax;
+
+	if (!intel_vrr_is_capable(connector))
+		return;
+
+	if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE)
+		return;
+
+	if (!crtc_state->uapi.vrr_enabled)
+		return;
+
+	vmin = DIV_ROUND_UP(adjusted_mode->crtc_clock * 1000,
+			    adjusted_mode->crtc_htotal * info->monitor_range.max_vfreq);
+	vmax = adjusted_mode->crtc_clock * 1000 /
+		(adjusted_mode->crtc_htotal * info->monitor_range.min_vfreq);
+
+	vmin = max_t(int, vmin, adjusted_mode->crtc_vtotal);
+	vmax = max_t(int, vmax, adjusted_mode->crtc_vtotal);
+
+	if (vmin >= vmax)
+		return;
+
+	/*
+	 * flipline determines the min vblank length the hardware will
+	 * generate, and flipline>=vmin+1, hence we reduce vmin by one
+	 * to make sure we can get the actual min vblank length.
+	 */
+	crtc_state->vrr.vmin = vmin - 1;
+	crtc_state->vrr.vmax = vmax;
+	crtc_state->vrr.enable = true;
+
+	crtc_state->vrr.flipline = crtc_state->vrr.vmin + 1;
+
+	/*
+	 * For XE_LPD+, we use guardband and pipeline override
+	 * is deprecated.
+	 */
+	if (DISPLAY_VER(i915) >= 13) {
+		/*
+		 * FIXME: Subtract Window2 delay from below value.
+		 *
+		 * Window2 specifies time required to program DSB (Window2) in
+		 * number of scan lines. Assuming 0 for no DSB.
+		 */
+		crtc_state->vrr.guardband =
+			crtc_state->vrr.vmin - adjusted_mode->crtc_vdisplay;
+	} else {
+		/*
+		 * FIXME: s/4/framestart_delay/ to get consistent
+		 * earliest/latest points for register latching regardless
+		 * of the framestart_delay used?
+		 *
+		 * FIXME: this really needs the extra scanline to provide consistent
+		 * behaviour for all framestart_delay values. Otherwise with
+		 * framestart_delay==4 we will end up extending the min vblank by
+		 * one extra line.
+		 */
+		crtc_state->vrr.pipeline_full =
+			min(255, crtc_state->vrr.vmin - adjusted_mode->crtc_vdisplay - 4 - 1);
+	}
+
+	crtc_state->mode_flags |= I915_MODE_FLAG_VRR;
+}
+
+void intel_vrr_enable(struct intel_encoder *encoder,
+		      const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+	u32 trans_vrr_ctl;
+
+	if (!crtc_state->vrr.enable)
+		return;
+
+	if (DISPLAY_VER(dev_priv) >= 13)
+		trans_vrr_ctl = VRR_CTL_VRR_ENABLE |
+			VRR_CTL_IGN_MAX_SHIFT | VRR_CTL_FLIP_LINE_EN |
+			XELPD_VRR_CTL_VRR_GUARDBAND(crtc_state->vrr.guardband);
+	else
+		trans_vrr_ctl = VRR_CTL_VRR_ENABLE |
+			VRR_CTL_IGN_MAX_SHIFT | VRR_CTL_FLIP_LINE_EN |
+			VRR_CTL_PIPELINE_FULL(crtc_state->vrr.pipeline_full) |
+			VRR_CTL_PIPELINE_FULL_OVERRIDE;
+
+	intel_de_write(dev_priv, TRANS_VRR_VMIN(cpu_transcoder), crtc_state->vrr.vmin - 1);
+	intel_de_write(dev_priv, TRANS_VRR_VMAX(cpu_transcoder), crtc_state->vrr.vmax - 1);
+	intel_de_write(dev_priv, TRANS_VRR_CTL(cpu_transcoder), trans_vrr_ctl);
+	intel_de_write(dev_priv, TRANS_VRR_FLIPLINE(cpu_transcoder), crtc_state->vrr.flipline - 1);
+	intel_de_write(dev_priv, TRANS_PUSH(cpu_transcoder), TRANS_PUSH_EN);
+}
+
+void intel_vrr_send_push(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+
+	if (!crtc_state->vrr.enable)
+		return;
+
+	intel_de_write(dev_priv, TRANS_PUSH(cpu_transcoder),
+		       TRANS_PUSH_EN | TRANS_PUSH_SEND);
+}
+
+bool intel_vrr_is_push_sent(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+
+	if (!crtc_state->vrr.enable)
+		return false;
+
+	return intel_de_read(dev_priv, TRANS_PUSH(cpu_transcoder)) & TRANS_PUSH_SEND;
+}
+
+void intel_vrr_disable(const struct intel_crtc_state *old_crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum transcoder cpu_transcoder = old_crtc_state->cpu_transcoder;
+
+	if (!old_crtc_state->vrr.enable)
+		return;
+
+	intel_de_write(dev_priv, TRANS_VRR_CTL(cpu_transcoder), 0);
+	intel_de_write(dev_priv, TRANS_PUSH(cpu_transcoder), 0);
+}
+
+void intel_vrr_get_config(struct intel_crtc *crtc,
+			  struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+	u32 trans_vrr_ctl;
+
+	trans_vrr_ctl = intel_de_read(dev_priv, TRANS_VRR_CTL(cpu_transcoder));
+	crtc_state->vrr.enable = trans_vrr_ctl & VRR_CTL_VRR_ENABLE;
+	if (!crtc_state->vrr.enable)
+		return;
+
+	if (DISPLAY_VER(dev_priv) >= 13)
+		crtc_state->vrr.guardband =
+			REG_FIELD_GET(XELPD_VRR_CTL_VRR_GUARDBAND_MASK, trans_vrr_ctl);
+	else
+		if (trans_vrr_ctl & VRR_CTL_PIPELINE_FULL_OVERRIDE)
+			crtc_state->vrr.pipeline_full =
+				REG_FIELD_GET(VRR_CTL_PIPELINE_FULL_MASK, trans_vrr_ctl);
+	if (trans_vrr_ctl & VRR_CTL_FLIP_LINE_EN)
+		crtc_state->vrr.flipline = intel_de_read(dev_priv, TRANS_VRR_FLIPLINE(cpu_transcoder)) + 1;
+	crtc_state->vrr.vmax = intel_de_read(dev_priv, TRANS_VRR_VMAX(cpu_transcoder)) + 1;
+	crtc_state->vrr.vmin = intel_de_read(dev_priv, TRANS_VRR_VMIN(cpu_transcoder)) + 1;
+
+	crtc_state->mode_flags |= I915_MODE_FLAG_VRR;
+}
diff --git a/drivers/gpu/drm/i915/display/intel_vrr.h b/drivers/gpu/drm/i915/display/intel_vrr.h
new file mode 100644
index 000000000..9fda1135b
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_vrr.h
@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_VRR_H__
+#define __INTEL_VRR_H__
+
+#include <linux/types.h>
+
+struct drm_connector_state;
+struct intel_atomic_state;
+struct intel_connector;
+struct intel_crtc;
+struct intel_crtc_state;
+struct intel_dp;
+struct intel_encoder;
+
+bool intel_vrr_is_capable(struct intel_connector *connector);
+void intel_vrr_check_modeset(struct intel_atomic_state *state);
+void intel_vrr_compute_config(struct intel_crtc_state *crtc_state,
+			      struct drm_connector_state *conn_state);
+void intel_vrr_enable(struct intel_encoder *encoder,
+		      const struct intel_crtc_state *crtc_state);
+void intel_vrr_send_push(const struct intel_crtc_state *crtc_state);
+bool intel_vrr_is_push_sent(const struct intel_crtc_state *crtc_state);
+void intel_vrr_disable(const struct intel_crtc_state *old_crtc_state);
+void intel_vrr_get_config(struct intel_crtc *crtc,
+			  struct intel_crtc_state *crtc_state);
+int intel_vrr_vmax_vblank_start(const struct intel_crtc_state *crtc_state);
+int intel_vrr_vmin_vblank_start(const struct intel_crtc_state *crtc_state);
+
+#endif /* __INTEL_VRR_H__ */
diff --git a/drivers/gpu/drm/i915/display/skl_scaler.c b/drivers/gpu/drm/i915/display/skl_scaler.c
new file mode 100644
index 000000000..0b74f91e8
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/skl_scaler.c
@@ -0,0 +1,847 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_fb.h"
+#include "skl_scaler.h"
+#include "skl_universal_plane.h"
+
+/*
+ * The hardware phase 0.0 refers to the center of the pixel.
+ * We want to start from the top/left edge which is phase
+ * -0.5. That matches how the hardware calculates the scaling
+ * factors (from top-left of the first pixel to bottom-right
+ * of the last pixel, as opposed to the pixel centers).
+ *
+ * For 4:2:0 subsampled chroma planes we obviously have to
+ * adjust that so that the chroma sample position lands in
+ * the right spot.
+ *
+ * Note that for packed YCbCr 4:2:2 formats there is no way to
+ * control chroma siting. The hardware simply replicates the
+ * chroma samples for both of the luma samples, and thus we don't
+ * actually get the expected MPEG2 chroma siting convention :(
+ * The same behaviour is observed on pre-SKL platforms as well.
+ *
+ * Theory behind the formula (note that we ignore sub-pixel
+ * source coordinates):
+ * s = source sample position
+ * d = destination sample position
+ *
+ * Downscaling 4:1:
+ * -0.5
+ * | 0.0
+ * | |     1.5 (initial phase)
+ * | |     |
+ * v v     v
+ * | s | s | s | s |
+ * |       d       |
+ *
+ * Upscaling 1:4:
+ * -0.5
+ * | -0.375 (initial phase)
+ * | |     0.0
+ * | |     |
+ * v v     v
+ * |       s       |
+ * | d | d | d | d |
+ */
+static u16 skl_scaler_calc_phase(int sub, int scale, bool chroma_cosited)
+{
+	int phase = -0x8000;
+	u16 trip = 0;
+
+	if (chroma_cosited)
+		phase += (sub - 1) * 0x8000 / sub;
+
+	phase += scale / (2 * sub);
+
+	/*
+	 * Hardware initial phase limited to [-0.5:1.5].
+	 * Since the max hardware scale factor is 3.0, we
+	 * should never actually excdeed 1.0 here.
+	 */
+	WARN_ON(phase < -0x8000 || phase > 0x18000);
+
+	if (phase < 0)
+		phase = 0x10000 + phase;
+	else
+		trip = PS_PHASE_TRIP;
+
+	return ((phase >> 2) & PS_PHASE_MASK) | trip;
+}
+
+#define SKL_MIN_SRC_W 8
+#define SKL_MAX_SRC_W 4096
+#define SKL_MIN_SRC_H 8
+#define SKL_MAX_SRC_H 4096
+#define SKL_MIN_DST_W 8
+#define SKL_MAX_DST_W 4096
+#define SKL_MIN_DST_H 8
+#define SKL_MAX_DST_H 4096
+#define ICL_MAX_SRC_W 5120
+#define ICL_MAX_SRC_H 4096
+#define ICL_MAX_DST_W 5120
+#define ICL_MAX_DST_H 4096
+#define MTL_MAX_SRC_W 4096
+#define MTL_MAX_SRC_H 8192
+#define MTL_MAX_DST_W 8192
+#define MTL_MAX_DST_H 8192
+#define SKL_MIN_YUV_420_SRC_W 16
+#define SKL_MIN_YUV_420_SRC_H 16
+
+static int
+skl_update_scaler(struct intel_crtc_state *crtc_state, bool force_detach,
+		  unsigned int scaler_user, int *scaler_id,
+		  int src_w, int src_h, int dst_w, int dst_h,
+		  const struct drm_format_info *format,
+		  u64 modifier, bool need_scaler)
+{
+	struct intel_crtc_scaler_state *scaler_state =
+		&crtc_state->scaler_state;
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	const struct drm_display_mode *adjusted_mode =
+		&crtc_state->hw.adjusted_mode;
+	int pipe_src_w = drm_rect_width(&crtc_state->pipe_src);
+	int pipe_src_h = drm_rect_height(&crtc_state->pipe_src);
+	int min_src_w, min_src_h, min_dst_w, min_dst_h;
+	int max_src_w, max_src_h, max_dst_w, max_dst_h;
+
+	/*
+	 * Src coordinates are already rotated by 270 degrees for
+	 * the 90/270 degree plane rotation cases (to match the
+	 * GTT mapping), hence no need to account for rotation here.
+	 */
+	if (src_w != dst_w || src_h != dst_h)
+		need_scaler = true;
+
+	/*
+	 * Scaling/fitting not supported in IF-ID mode in GEN9+
+	 * TODO: Interlace fetch mode doesn't support YUV420 planar formats.
+	 * Once NV12 is enabled, handle it here while allocating scaler
+	 * for NV12.
+	 */
+	if (DISPLAY_VER(dev_priv) >= 9 && crtc_state->hw.enable &&
+	    need_scaler && adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Pipe/Plane scaling not supported with IF-ID mode\n");
+		return -EINVAL;
+	}
+
+	/*
+	 * if plane is being disabled or scaler is no more required or force detach
+	 *  - free scaler binded to this plane/crtc
+	 *  - in order to do this, update crtc->scaler_usage
+	 *
+	 * Here scaler state in crtc_state is set free so that
+	 * scaler can be assigned to other user. Actual register
+	 * update to free the scaler is done in plane/panel-fit programming.
+	 * For this purpose crtc/plane_state->scaler_id isn't reset here.
+	 */
+	if (force_detach || !need_scaler) {
+		if (*scaler_id >= 0) {
+			scaler_state->scaler_users &= ~(1 << scaler_user);
+			scaler_state->scalers[*scaler_id].in_use = 0;
+
+			drm_dbg_kms(&dev_priv->drm,
+				    "scaler_user index %u.%u: "
+				    "Staged freeing scaler id %d scaler_users = 0x%x\n",
+				    crtc->pipe, scaler_user, *scaler_id,
+				    scaler_state->scaler_users);
+			*scaler_id = -1;
+		}
+		return 0;
+	}
+
+	if (format && intel_format_info_is_yuv_semiplanar(format, modifier) &&
+	    (src_h < SKL_MIN_YUV_420_SRC_H || src_w < SKL_MIN_YUV_420_SRC_W)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Planar YUV: src dimensions not met\n");
+		return -EINVAL;
+	}
+
+	min_src_w = SKL_MIN_SRC_W;
+	min_src_h = SKL_MIN_SRC_H;
+	min_dst_w = SKL_MIN_DST_W;
+	min_dst_h = SKL_MIN_DST_H;
+
+	if (DISPLAY_VER(dev_priv) < 11) {
+		max_src_w = SKL_MAX_SRC_W;
+		max_src_h = SKL_MAX_SRC_H;
+		max_dst_w = SKL_MAX_DST_W;
+		max_dst_h = SKL_MAX_DST_H;
+	} else if (DISPLAY_VER(dev_priv) < 14) {
+		max_src_w = ICL_MAX_SRC_W;
+		max_src_h = ICL_MAX_SRC_H;
+		max_dst_w = ICL_MAX_DST_W;
+		max_dst_h = ICL_MAX_DST_H;
+	} else {
+		max_src_w = MTL_MAX_SRC_W;
+		max_src_h = MTL_MAX_SRC_H;
+		max_dst_w = MTL_MAX_DST_W;
+		max_dst_h = MTL_MAX_DST_H;
+	}
+
+	/* range checks */
+	if (src_w < min_src_w || src_h < min_src_h ||
+	    dst_w < min_dst_w || dst_h < min_dst_h ||
+	    src_w > max_src_w || src_h > max_src_h ||
+	    dst_w > max_dst_w || dst_h > max_dst_h) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "scaler_user index %u.%u: src %ux%u dst %ux%u "
+			    "size is out of scaler range\n",
+			    crtc->pipe, scaler_user, src_w, src_h,
+			    dst_w, dst_h);
+		return -EINVAL;
+	}
+
+	/*
+	 * The pipe scaler does not use all the bits of PIPESRC, at least
+	 * on the earlier platforms. So even when we're scaling a plane
+	 * the *pipe* source size must not be too large. For simplicity
+	 * we assume the limits match the scaler source size limits. Might
+	 * not be 100% accurate on all platforms, but good enough for now.
+	 */
+	if (pipe_src_w > max_src_w || pipe_src_h > max_src_h) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "scaler_user index %u.%u: pipe src size %ux%u "
+			    "is out of scaler range\n",
+			    crtc->pipe, scaler_user, pipe_src_w, pipe_src_h);
+		return -EINVAL;
+	}
+
+	/* mark this plane as a scaler user in crtc_state */
+	scaler_state->scaler_users |= (1 << scaler_user);
+	drm_dbg_kms(&dev_priv->drm, "scaler_user index %u.%u: "
+		    "staged scaling request for %ux%u->%ux%u scaler_users = 0x%x\n",
+		    crtc->pipe, scaler_user, src_w, src_h, dst_w, dst_h,
+		    scaler_state->scaler_users);
+
+	return 0;
+}
+
+int skl_update_scaler_crtc(struct intel_crtc_state *crtc_state)
+{
+	const struct drm_display_mode *pipe_mode = &crtc_state->hw.pipe_mode;
+	int width, height;
+
+	if (crtc_state->pch_pfit.enabled) {
+		width = drm_rect_width(&crtc_state->pch_pfit.dst);
+		height = drm_rect_height(&crtc_state->pch_pfit.dst);
+	} else {
+		width = pipe_mode->crtc_hdisplay;
+		height = pipe_mode->crtc_vdisplay;
+	}
+	return skl_update_scaler(crtc_state, !crtc_state->hw.active,
+				 SKL_CRTC_INDEX,
+				 &crtc_state->scaler_state.scaler_id,
+				 drm_rect_width(&crtc_state->pipe_src),
+				 drm_rect_height(&crtc_state->pipe_src),
+				 width, height, NULL, 0,
+				 crtc_state->pch_pfit.enabled);
+}
+
+/**
+ * skl_update_scaler_plane - Stages update to scaler state for a given plane.
+ * @crtc_state: crtc's scaler state
+ * @plane_state: atomic plane state to update
+ *
+ * Return
+ *     0 - scaler_usage updated successfully
+ *    error - requested scaling cannot be supported or other error condition
+ */
+int skl_update_scaler_plane(struct intel_crtc_state *crtc_state,
+			    struct intel_plane_state *plane_state)
+{
+	struct intel_plane *intel_plane =
+		to_intel_plane(plane_state->uapi.plane);
+	struct drm_i915_private *dev_priv = to_i915(intel_plane->base.dev);
+	struct drm_framebuffer *fb = plane_state->hw.fb;
+	int ret;
+	bool force_detach = !fb || !plane_state->uapi.visible;
+	bool need_scaler = false;
+
+	/* Pre-gen11 and SDR planes always need a scaler for planar formats. */
+	if (!icl_is_hdr_plane(dev_priv, intel_plane->id) &&
+	    fb && intel_format_info_is_yuv_semiplanar(fb->format, fb->modifier))
+		need_scaler = true;
+
+	ret = skl_update_scaler(crtc_state, force_detach,
+				drm_plane_index(&intel_plane->base),
+				&plane_state->scaler_id,
+				drm_rect_width(&plane_state->uapi.src) >> 16,
+				drm_rect_height(&plane_state->uapi.src) >> 16,
+				drm_rect_width(&plane_state->uapi.dst),
+				drm_rect_height(&plane_state->uapi.dst),
+				fb ? fb->format : NULL,
+				fb ? fb->modifier : 0,
+				need_scaler);
+
+	if (ret || plane_state->scaler_id < 0)
+		return ret;
+
+	/* check colorkey */
+	if (plane_state->ckey.flags) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "[PLANE:%d:%s] scaling with color key not allowed",
+			    intel_plane->base.base.id,
+			    intel_plane->base.name);
+		return -EINVAL;
+	}
+
+	/* Check src format */
+	switch (fb->format->format) {
+	case DRM_FORMAT_RGB565:
+	case DRM_FORMAT_XBGR8888:
+	case DRM_FORMAT_XRGB8888:
+	case DRM_FORMAT_ABGR8888:
+	case DRM_FORMAT_ARGB8888:
+	case DRM_FORMAT_XRGB2101010:
+	case DRM_FORMAT_XBGR2101010:
+	case DRM_FORMAT_ARGB2101010:
+	case DRM_FORMAT_ABGR2101010:
+	case DRM_FORMAT_YUYV:
+	case DRM_FORMAT_YVYU:
+	case DRM_FORMAT_UYVY:
+	case DRM_FORMAT_VYUY:
+	case DRM_FORMAT_NV12:
+	case DRM_FORMAT_XYUV8888:
+	case DRM_FORMAT_P010:
+	case DRM_FORMAT_P012:
+	case DRM_FORMAT_P016:
+	case DRM_FORMAT_Y210:
+	case DRM_FORMAT_Y212:
+	case DRM_FORMAT_Y216:
+	case DRM_FORMAT_XVYU2101010:
+	case DRM_FORMAT_XVYU12_16161616:
+	case DRM_FORMAT_XVYU16161616:
+		break;
+	case DRM_FORMAT_XBGR16161616F:
+	case DRM_FORMAT_ABGR16161616F:
+	case DRM_FORMAT_XRGB16161616F:
+	case DRM_FORMAT_ARGB16161616F:
+		if (DISPLAY_VER(dev_priv) >= 11)
+			break;
+		fallthrough;
+	default:
+		drm_dbg_kms(&dev_priv->drm,
+			    "[PLANE:%d:%s] FB:%d unsupported scaling format 0x%x\n",
+			    intel_plane->base.base.id, intel_plane->base.name,
+			    fb->base.id, fb->format->format);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int intel_atomic_setup_scaler(struct intel_crtc_scaler_state *scaler_state,
+				     int num_scalers_need, struct intel_crtc *intel_crtc,
+				     const char *name, int idx,
+				     struct intel_plane_state *plane_state,
+				     int *scaler_id)
+{
+	struct drm_i915_private *dev_priv = to_i915(intel_crtc->base.dev);
+	int j;
+	u32 mode;
+
+	if (*scaler_id < 0) {
+		/* find a free scaler */
+		for (j = 0; j < intel_crtc->num_scalers; j++) {
+			if (scaler_state->scalers[j].in_use)
+				continue;
+
+			*scaler_id = j;
+			scaler_state->scalers[*scaler_id].in_use = 1;
+			break;
+		}
+	}
+
+	if (drm_WARN(&dev_priv->drm, *scaler_id < 0,
+		     "Cannot find scaler for %s:%d\n", name, idx))
+		return -EINVAL;
+
+	/* set scaler mode */
+	if (plane_state && plane_state->hw.fb &&
+	    plane_state->hw.fb->format->is_yuv &&
+	    plane_state->hw.fb->format->num_planes > 1) {
+		struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+
+		if (DISPLAY_VER(dev_priv) == 9) {
+			mode = SKL_PS_SCALER_MODE_NV12;
+		} else if (icl_is_hdr_plane(dev_priv, plane->id)) {
+			/*
+			 * On gen11+'s HDR planes we only use the scaler for
+			 * scaling. They have a dedicated chroma upsampler, so
+			 * we don't need the scaler to upsample the UV plane.
+			 */
+			mode = PS_SCALER_MODE_NORMAL;
+		} else {
+			struct intel_plane *linked =
+				plane_state->planar_linked_plane;
+
+			mode = PS_SCALER_MODE_PLANAR;
+
+			if (linked)
+				mode |= PS_PLANE_Y_SEL(linked->id);
+		}
+	} else if (DISPLAY_VER(dev_priv) >= 10) {
+		mode = PS_SCALER_MODE_NORMAL;
+	} else if (num_scalers_need == 1 && intel_crtc->num_scalers > 1) {
+		/*
+		 * when only 1 scaler is in use on a pipe with 2 scalers
+		 * scaler 0 operates in high quality (HQ) mode.
+		 * In this case use scaler 0 to take advantage of HQ mode
+		 */
+		scaler_state->scalers[*scaler_id].in_use = 0;
+		*scaler_id = 0;
+		scaler_state->scalers[0].in_use = 1;
+		mode = SKL_PS_SCALER_MODE_HQ;
+	} else {
+		mode = SKL_PS_SCALER_MODE_DYN;
+	}
+
+	/*
+	 * FIXME: we should also check the scaler factors for pfit, so
+	 * this shouldn't be tied directly to planes.
+	 */
+	if (plane_state && plane_state->hw.fb) {
+		const struct drm_framebuffer *fb = plane_state->hw.fb;
+		const struct drm_rect *src = &plane_state->uapi.src;
+		const struct drm_rect *dst = &plane_state->uapi.dst;
+		int hscale, vscale, max_vscale, max_hscale;
+
+		/*
+		 * FIXME: When two scalers are needed, but only one of
+		 * them needs to downscale, we should make sure that
+		 * the one that needs downscaling support is assigned
+		 * as the first scaler, so we don't reject downscaling
+		 * unnecessarily.
+		 */
+
+		if (DISPLAY_VER(dev_priv) >= 14) {
+			/*
+			 * On versions 14 and up, only the first
+			 * scaler supports a vertical scaling factor
+			 * of more than 1.0, while a horizontal
+			 * scaling factor of 3.0 is supported.
+			 */
+			max_hscale = 0x30000 - 1;
+			if (*scaler_id == 0)
+				max_vscale = 0x30000 - 1;
+			else
+				max_vscale = 0x10000;
+
+		} else if (DISPLAY_VER(dev_priv) >= 10 ||
+			   !intel_format_info_is_yuv_semiplanar(fb->format, fb->modifier)) {
+			max_hscale = 0x30000 - 1;
+			max_vscale = 0x30000 - 1;
+		} else {
+			max_hscale = 0x20000 - 1;
+			max_vscale = 0x20000 - 1;
+		}
+
+		/*
+		 * FIXME: We should change the if-else block above to
+		 * support HQ vs dynamic scaler properly.
+		 */
+
+		/* Check if required scaling is within limits */
+		hscale = drm_rect_calc_hscale(src, dst, 1, max_hscale);
+		vscale = drm_rect_calc_vscale(src, dst, 1, max_vscale);
+
+		if (hscale < 0 || vscale < 0) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "Scaler %d doesn't support required plane scaling\n",
+				    *scaler_id);
+			drm_rect_debug_print("src: ", src, true);
+			drm_rect_debug_print("dst: ", dst, false);
+
+			return -EINVAL;
+		}
+	}
+
+	drm_dbg_kms(&dev_priv->drm, "Attached scaler id %u.%u to %s:%d\n",
+		    intel_crtc->pipe, *scaler_id, name, idx);
+	scaler_state->scalers[*scaler_id].mode = mode;
+
+	return 0;
+}
+
+/**
+ * intel_atomic_setup_scalers() - setup scalers for crtc per staged requests
+ * @dev_priv: i915 device
+ * @intel_crtc: intel crtc
+ * @crtc_state: incoming crtc_state to validate and setup scalers
+ *
+ * This function sets up scalers based on staged scaling requests for
+ * a @crtc and its planes. It is called from crtc level check path. If request
+ * is a supportable request, it attaches scalers to requested planes and crtc.
+ *
+ * This function takes into account the current scaler(s) in use by any planes
+ * not being part of this atomic state
+ *
+ *  Returns:
+ *         0 - scalers were setup successfully
+ *         error code - otherwise
+ */
+int intel_atomic_setup_scalers(struct drm_i915_private *dev_priv,
+			       struct intel_crtc *intel_crtc,
+			       struct intel_crtc_state *crtc_state)
+{
+	struct drm_plane *plane = NULL;
+	struct intel_plane *intel_plane;
+	struct intel_crtc_scaler_state *scaler_state =
+		&crtc_state->scaler_state;
+	struct drm_atomic_state *drm_state = crtc_state->uapi.state;
+	struct intel_atomic_state *intel_state = to_intel_atomic_state(drm_state);
+	int num_scalers_need;
+	int i;
+
+	num_scalers_need = hweight32(scaler_state->scaler_users);
+
+	/*
+	 * High level flow:
+	 * - staged scaler requests are already in scaler_state->scaler_users
+	 * - check whether staged scaling requests can be supported
+	 * - add planes using scalers that aren't in current transaction
+	 * - assign scalers to requested users
+	 * - as part of plane commit, scalers will be committed
+	 *   (i.e., either attached or detached) to respective planes in hw
+	 * - as part of crtc_commit, scaler will be either attached or detached
+	 *   to crtc in hw
+	 */
+
+	/* fail if required scalers > available scalers */
+	if (num_scalers_need > intel_crtc->num_scalers) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Too many scaling requests %d > %d\n",
+			    num_scalers_need, intel_crtc->num_scalers);
+		return -EINVAL;
+	}
+
+	/* walkthrough scaler_users bits and start assigning scalers */
+	for (i = 0; i < sizeof(scaler_state->scaler_users) * 8; i++) {
+		struct intel_plane_state *plane_state = NULL;
+		int *scaler_id;
+		const char *name;
+		int idx, ret;
+
+		/* skip if scaler not required */
+		if (!(scaler_state->scaler_users & (1 << i)))
+			continue;
+
+		if (i == SKL_CRTC_INDEX) {
+			name = "CRTC";
+			idx = intel_crtc->base.base.id;
+
+			/* panel fitter case: assign as a crtc scaler */
+			scaler_id = &scaler_state->scaler_id;
+		} else {
+			name = "PLANE";
+
+			/* plane scaler case: assign as a plane scaler */
+			/* find the plane that set the bit as scaler_user */
+			plane = drm_state->planes[i].ptr;
+
+			/*
+			 * to enable/disable hq mode, add planes that are using scaler
+			 * into this transaction
+			 */
+			if (!plane) {
+				struct drm_plane_state *state;
+
+				/*
+				 * GLK+ scalers don't have a HQ mode so it
+				 * isn't necessary to change between HQ and dyn mode
+				 * on those platforms.
+				 */
+				if (DISPLAY_VER(dev_priv) >= 10)
+					continue;
+
+				plane = drm_plane_from_index(&dev_priv->drm, i);
+				state = drm_atomic_get_plane_state(drm_state, plane);
+				if (IS_ERR(state)) {
+					drm_dbg_kms(&dev_priv->drm,
+						    "Failed to add [PLANE:%d] to drm_state\n",
+						    plane->base.id);
+					return PTR_ERR(state);
+				}
+			}
+
+			intel_plane = to_intel_plane(plane);
+			idx = plane->base.id;
+
+			/* plane on different crtc cannot be a scaler user of this crtc */
+			if (drm_WARN_ON(&dev_priv->drm,
+					intel_plane->pipe != intel_crtc->pipe))
+				continue;
+
+			plane_state = intel_atomic_get_new_plane_state(intel_state,
+								       intel_plane);
+			scaler_id = &plane_state->scaler_id;
+		}
+
+		ret = intel_atomic_setup_scaler(scaler_state, num_scalers_need,
+						intel_crtc, name, idx,
+						plane_state, scaler_id);
+		if (ret < 0)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int glk_coef_tap(int i)
+{
+	return i % 7;
+}
+
+static u16 glk_nearest_filter_coef(int t)
+{
+	return t == 3 ? 0x0800 : 0x3000;
+}
+
+/*
+ *  Theory behind setting nearest-neighbor integer scaling:
+ *
+ *  17 phase of 7 taps requires 119 coefficients in 60 dwords per set.
+ *  The letter represents the filter tap (D is the center tap) and the number
+ *  represents the coefficient set for a phase (0-16).
+ *
+ *         +------------+------------------------+------------------------+
+ *         |Index value | Data value coeffient 1 | Data value coeffient 2 |
+ *         +------------+------------------------+------------------------+
+ *         |   00h      |          B0            |          A0            |
+ *         +------------+------------------------+------------------------+
+ *         |   01h      |          D0            |          C0            |
+ *         +------------+------------------------+------------------------+
+ *         |   02h      |          F0            |          E0            |
+ *         +------------+------------------------+------------------------+
+ *         |   03h      |          A1            |          G0            |
+ *         +------------+------------------------+------------------------+
+ *         |   04h      |          C1            |          B1            |
+ *         +------------+------------------------+------------------------+
+ *         |   ...      |          ...           |          ...           |
+ *         +------------+------------------------+------------------------+
+ *         |   38h      |          B16           |          A16           |
+ *         +------------+------------------------+------------------------+
+ *         |   39h      |          D16           |          C16           |
+ *         +------------+------------------------+------------------------+
+ *         |   3Ah      |          F16           |          C16           |
+ *         +------------+------------------------+------------------------+
+ *         |   3Bh      |        Reserved        |          G16           |
+ *         +------------+------------------------+------------------------+
+ *
+ *  To enable nearest-neighbor scaling:  program scaler coefficents with
+ *  the center tap (Dxx) values set to 1 and all other values set to 0 as per
+ *  SCALER_COEFFICIENT_FORMAT
+ *
+ */
+
+static void glk_program_nearest_filter_coefs(struct drm_i915_private *dev_priv,
+					     enum pipe pipe, int id, int set)
+{
+	int i;
+
+	intel_de_write_fw(dev_priv, GLK_PS_COEF_INDEX_SET(pipe, id, set),
+			  PS_COEE_INDEX_AUTO_INC);
+
+	for (i = 0; i < 17 * 7; i += 2) {
+		u32 tmp;
+		int t;
+
+		t = glk_coef_tap(i);
+		tmp = glk_nearest_filter_coef(t);
+
+		t = glk_coef_tap(i + 1);
+		tmp |= glk_nearest_filter_coef(t) << 16;
+
+		intel_de_write_fw(dev_priv, GLK_PS_COEF_DATA_SET(pipe, id, set),
+				  tmp);
+	}
+
+	intel_de_write_fw(dev_priv, GLK_PS_COEF_INDEX_SET(pipe, id, set), 0);
+}
+
+static u32 skl_scaler_get_filter_select(enum drm_scaling_filter filter, int set)
+{
+	if (filter == DRM_SCALING_FILTER_NEAREST_NEIGHBOR) {
+		return (PS_FILTER_PROGRAMMED |
+			PS_Y_VERT_FILTER_SELECT(set) |
+			PS_Y_HORZ_FILTER_SELECT(set) |
+			PS_UV_VERT_FILTER_SELECT(set) |
+			PS_UV_HORZ_FILTER_SELECT(set));
+	}
+
+	return PS_FILTER_MEDIUM;
+}
+
+static void skl_scaler_setup_filter(struct drm_i915_private *dev_priv, enum pipe pipe,
+				    int id, int set, enum drm_scaling_filter filter)
+{
+	switch (filter) {
+	case DRM_SCALING_FILTER_DEFAULT:
+		break;
+	case DRM_SCALING_FILTER_NEAREST_NEIGHBOR:
+		glk_program_nearest_filter_coefs(dev_priv, pipe, id, set);
+		break;
+	default:
+		MISSING_CASE(filter);
+	}
+}
+
+void skl_pfit_enable(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	const struct intel_crtc_scaler_state *scaler_state =
+		&crtc_state->scaler_state;
+	const struct drm_rect *dst = &crtc_state->pch_pfit.dst;
+	u16 uv_rgb_hphase, uv_rgb_vphase;
+	enum pipe pipe = crtc->pipe;
+	int width = drm_rect_width(dst);
+	int height = drm_rect_height(dst);
+	int x = dst->x1;
+	int y = dst->y1;
+	int hscale, vscale;
+	struct drm_rect src;
+	int id;
+	u32 ps_ctrl;
+
+	if (!crtc_state->pch_pfit.enabled)
+		return;
+
+	if (drm_WARN_ON(&dev_priv->drm,
+			crtc_state->scaler_state.scaler_id < 0))
+		return;
+
+	drm_rect_init(&src, 0, 0,
+		      drm_rect_width(&crtc_state->pipe_src) << 16,
+		      drm_rect_height(&crtc_state->pipe_src) << 16);
+
+	hscale = drm_rect_calc_hscale(&src, dst, 0, INT_MAX);
+	vscale = drm_rect_calc_vscale(&src, dst, 0, INT_MAX);
+
+	uv_rgb_hphase = skl_scaler_calc_phase(1, hscale, false);
+	uv_rgb_vphase = skl_scaler_calc_phase(1, vscale, false);
+
+	id = scaler_state->scaler_id;
+
+	ps_ctrl = skl_scaler_get_filter_select(crtc_state->hw.scaling_filter, 0);
+	ps_ctrl |=  PS_SCALER_EN | scaler_state->scalers[id].mode;
+
+	skl_scaler_setup_filter(dev_priv, pipe, id, 0,
+				crtc_state->hw.scaling_filter);
+
+	intel_de_write_fw(dev_priv, SKL_PS_CTRL(pipe, id), ps_ctrl);
+
+	intel_de_write_fw(dev_priv, SKL_PS_VPHASE(pipe, id),
+			  PS_Y_PHASE(0) | PS_UV_RGB_PHASE(uv_rgb_vphase));
+	intel_de_write_fw(dev_priv, SKL_PS_HPHASE(pipe, id),
+			  PS_Y_PHASE(0) | PS_UV_RGB_PHASE(uv_rgb_hphase));
+	intel_de_write_fw(dev_priv, SKL_PS_WIN_POS(pipe, id),
+			  x << 16 | y);
+	intel_de_write_fw(dev_priv, SKL_PS_WIN_SZ(pipe, id),
+			  width << 16 | height);
+}
+
+void
+skl_program_plane_scaler(struct intel_plane *plane,
+			 const struct intel_crtc_state *crtc_state,
+			 const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	enum pipe pipe = plane->pipe;
+	int scaler_id = plane_state->scaler_id;
+	const struct intel_scaler *scaler =
+		&crtc_state->scaler_state.scalers[scaler_id];
+	int crtc_x = plane_state->uapi.dst.x1;
+	int crtc_y = plane_state->uapi.dst.y1;
+	u32 crtc_w = drm_rect_width(&plane_state->uapi.dst);
+	u32 crtc_h = drm_rect_height(&plane_state->uapi.dst);
+	u16 y_hphase, uv_rgb_hphase;
+	u16 y_vphase, uv_rgb_vphase;
+	int hscale, vscale;
+	u32 ps_ctrl;
+
+	hscale = drm_rect_calc_hscale(&plane_state->uapi.src,
+				      &plane_state->uapi.dst,
+				      0, INT_MAX);
+	vscale = drm_rect_calc_vscale(&plane_state->uapi.src,
+				      &plane_state->uapi.dst,
+				      0, INT_MAX);
+
+	/* TODO: handle sub-pixel coordinates */
+	if (intel_format_info_is_yuv_semiplanar(fb->format, fb->modifier) &&
+	    !icl_is_hdr_plane(dev_priv, plane->id)) {
+		y_hphase = skl_scaler_calc_phase(1, hscale, false);
+		y_vphase = skl_scaler_calc_phase(1, vscale, false);
+
+		/* MPEG2 chroma siting convention */
+		uv_rgb_hphase = skl_scaler_calc_phase(2, hscale, true);
+		uv_rgb_vphase = skl_scaler_calc_phase(2, vscale, false);
+	} else {
+		/* not used */
+		y_hphase = 0;
+		y_vphase = 0;
+
+		uv_rgb_hphase = skl_scaler_calc_phase(1, hscale, false);
+		uv_rgb_vphase = skl_scaler_calc_phase(1, vscale, false);
+	}
+
+	ps_ctrl = skl_scaler_get_filter_select(plane_state->hw.scaling_filter, 0);
+	ps_ctrl |= PS_SCALER_EN | PS_PLANE_SEL(plane->id) | scaler->mode;
+
+	skl_scaler_setup_filter(dev_priv, pipe, scaler_id, 0,
+				plane_state->hw.scaling_filter);
+
+	intel_de_write_fw(dev_priv, SKL_PS_CTRL(pipe, scaler_id), ps_ctrl);
+	intel_de_write_fw(dev_priv, SKL_PS_VPHASE(pipe, scaler_id),
+			  PS_Y_PHASE(y_vphase) | PS_UV_RGB_PHASE(uv_rgb_vphase));
+	intel_de_write_fw(dev_priv, SKL_PS_HPHASE(pipe, scaler_id),
+			  PS_Y_PHASE(y_hphase) | PS_UV_RGB_PHASE(uv_rgb_hphase));
+	intel_de_write_fw(dev_priv, SKL_PS_WIN_POS(pipe, scaler_id),
+			  (crtc_x << 16) | crtc_y);
+	intel_de_write_fw(dev_priv, SKL_PS_WIN_SZ(pipe, scaler_id),
+			  (crtc_w << 16) | crtc_h);
+}
+
+static void skl_detach_scaler(struct intel_crtc *crtc, int id)
+{
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+
+	intel_de_write_fw(dev_priv, SKL_PS_CTRL(crtc->pipe, id), 0);
+	intel_de_write_fw(dev_priv, SKL_PS_WIN_POS(crtc->pipe, id), 0);
+	intel_de_write_fw(dev_priv, SKL_PS_WIN_SZ(crtc->pipe, id), 0);
+}
+
+/*
+ * This function detaches (aka. unbinds) unused scalers in hardware
+ */
+void skl_detach_scalers(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	const struct intel_crtc_scaler_state *scaler_state =
+		&crtc_state->scaler_state;
+	int i;
+
+	/* loop through and disable scalers that aren't in use */
+	for (i = 0; i < crtc->num_scalers; i++) {
+		if (!scaler_state->scalers[i].in_use)
+			skl_detach_scaler(crtc, i);
+	}
+}
+
+void skl_scaler_disable(const struct intel_crtc_state *old_crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
+	int i;
+
+	for (i = 0; i < crtc->num_scalers; i++)
+		skl_detach_scaler(crtc, i);
+}
diff --git a/drivers/gpu/drm/i915/display/skl_scaler.h b/drivers/gpu/drm/i915/display/skl_scaler.h
new file mode 100644
index 000000000..f040f6ac0
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/skl_scaler.h
@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+#ifndef INTEL_SCALER_H
+#define INTEL_SCALER_H
+
+#include <linux/types.h>
+
+enum drm_scaling_filter;
+enum pipe;
+struct drm_i915_private;
+struct intel_crtc;
+struct intel_crtc_state;
+struct intel_plane;
+struct intel_plane_state;
+
+int skl_update_scaler_crtc(struct intel_crtc_state *crtc_state);
+
+int skl_update_scaler_plane(struct intel_crtc_state *crtc_state,
+			    struct intel_plane_state *plane_state);
+
+int intel_atomic_setup_scalers(struct drm_i915_private *dev_priv,
+			       struct intel_crtc *intel_crtc,
+			       struct intel_crtc_state *crtc_state);
+
+void skl_pfit_enable(const struct intel_crtc_state *crtc_state);
+
+void skl_program_plane_scaler(struct intel_plane *plane,
+			      const struct intel_crtc_state *crtc_state,
+			      const struct intel_plane_state *plane_state);
+void skl_detach_scalers(const struct intel_crtc_state *crtc_state);
+void skl_scaler_disable(const struct intel_crtc_state *old_crtc_state);
+
+#endif
diff --git a/drivers/gpu/drm/i915/display/skl_universal_plane.c b/drivers/gpu/drm/i915/display/skl_universal_plane.c
new file mode 100644
index 000000000..bc523a3d1
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/skl_universal_plane.c
@@ -0,0 +1,2525 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_blend.h>
+#include <drm/drm_damage_helper.h>
+#include <drm/drm_fourcc.h>
+
+#include "i915_drv.h"
+#include "intel_atomic_plane.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_fb.h"
+#include "intel_fbc.h"
+#include "intel_psr.h"
+#include "intel_sprite.h"
+#include "skl_scaler.h"
+#include "skl_universal_plane.h"
+#include "skl_watermark.h"
+#include "pxp/intel_pxp.h"
+
+static const u32 skl_plane_formats[] = {
+	DRM_FORMAT_C8,
+	DRM_FORMAT_RGB565,
+	DRM_FORMAT_XRGB8888,
+	DRM_FORMAT_XBGR8888,
+	DRM_FORMAT_ARGB8888,
+	DRM_FORMAT_ABGR8888,
+	DRM_FORMAT_XRGB2101010,
+	DRM_FORMAT_XBGR2101010,
+	DRM_FORMAT_XRGB16161616F,
+	DRM_FORMAT_XBGR16161616F,
+	DRM_FORMAT_YUYV,
+	DRM_FORMAT_YVYU,
+	DRM_FORMAT_UYVY,
+	DRM_FORMAT_VYUY,
+	DRM_FORMAT_XYUV8888,
+};
+
+static const u32 skl_planar_formats[] = {
+	DRM_FORMAT_C8,
+	DRM_FORMAT_RGB565,
+	DRM_FORMAT_XRGB8888,
+	DRM_FORMAT_XBGR8888,
+	DRM_FORMAT_ARGB8888,
+	DRM_FORMAT_ABGR8888,
+	DRM_FORMAT_XRGB2101010,
+	DRM_FORMAT_XBGR2101010,
+	DRM_FORMAT_XRGB16161616F,
+	DRM_FORMAT_XBGR16161616F,
+	DRM_FORMAT_YUYV,
+	DRM_FORMAT_YVYU,
+	DRM_FORMAT_UYVY,
+	DRM_FORMAT_VYUY,
+	DRM_FORMAT_NV12,
+	DRM_FORMAT_XYUV8888,
+};
+
+static const u32 glk_planar_formats[] = {
+	DRM_FORMAT_C8,
+	DRM_FORMAT_RGB565,
+	DRM_FORMAT_XRGB8888,
+	DRM_FORMAT_XBGR8888,
+	DRM_FORMAT_ARGB8888,
+	DRM_FORMAT_ABGR8888,
+	DRM_FORMAT_XRGB2101010,
+	DRM_FORMAT_XBGR2101010,
+	DRM_FORMAT_XRGB16161616F,
+	DRM_FORMAT_XBGR16161616F,
+	DRM_FORMAT_YUYV,
+	DRM_FORMAT_YVYU,
+	DRM_FORMAT_UYVY,
+	DRM_FORMAT_VYUY,
+	DRM_FORMAT_NV12,
+	DRM_FORMAT_XYUV8888,
+	DRM_FORMAT_P010,
+	DRM_FORMAT_P012,
+	DRM_FORMAT_P016,
+};
+
+static const u32 icl_sdr_y_plane_formats[] = {
+	DRM_FORMAT_C8,
+	DRM_FORMAT_RGB565,
+	DRM_FORMAT_XRGB8888,
+	DRM_FORMAT_XBGR8888,
+	DRM_FORMAT_ARGB8888,
+	DRM_FORMAT_ABGR8888,
+	DRM_FORMAT_XRGB2101010,
+	DRM_FORMAT_XBGR2101010,
+	DRM_FORMAT_ARGB2101010,
+	DRM_FORMAT_ABGR2101010,
+	DRM_FORMAT_YUYV,
+	DRM_FORMAT_YVYU,
+	DRM_FORMAT_UYVY,
+	DRM_FORMAT_VYUY,
+	DRM_FORMAT_Y210,
+	DRM_FORMAT_Y212,
+	DRM_FORMAT_Y216,
+	DRM_FORMAT_XYUV8888,
+	DRM_FORMAT_XVYU2101010,
+	DRM_FORMAT_XVYU12_16161616,
+	DRM_FORMAT_XVYU16161616,
+};
+
+static const u32 icl_sdr_uv_plane_formats[] = {
+	DRM_FORMAT_C8,
+	DRM_FORMAT_RGB565,
+	DRM_FORMAT_XRGB8888,
+	DRM_FORMAT_XBGR8888,
+	DRM_FORMAT_ARGB8888,
+	DRM_FORMAT_ABGR8888,
+	DRM_FORMAT_XRGB2101010,
+	DRM_FORMAT_XBGR2101010,
+	DRM_FORMAT_ARGB2101010,
+	DRM_FORMAT_ABGR2101010,
+	DRM_FORMAT_YUYV,
+	DRM_FORMAT_YVYU,
+	DRM_FORMAT_UYVY,
+	DRM_FORMAT_VYUY,
+	DRM_FORMAT_NV12,
+	DRM_FORMAT_P010,
+	DRM_FORMAT_P012,
+	DRM_FORMAT_P016,
+	DRM_FORMAT_Y210,
+	DRM_FORMAT_Y212,
+	DRM_FORMAT_Y216,
+	DRM_FORMAT_XYUV8888,
+	DRM_FORMAT_XVYU2101010,
+	DRM_FORMAT_XVYU12_16161616,
+	DRM_FORMAT_XVYU16161616,
+};
+
+static const u32 icl_hdr_plane_formats[] = {
+	DRM_FORMAT_C8,
+	DRM_FORMAT_RGB565,
+	DRM_FORMAT_XRGB8888,
+	DRM_FORMAT_XBGR8888,
+	DRM_FORMAT_ARGB8888,
+	DRM_FORMAT_ABGR8888,
+	DRM_FORMAT_XRGB2101010,
+	DRM_FORMAT_XBGR2101010,
+	DRM_FORMAT_ARGB2101010,
+	DRM_FORMAT_ABGR2101010,
+	DRM_FORMAT_XRGB16161616F,
+	DRM_FORMAT_XBGR16161616F,
+	DRM_FORMAT_ARGB16161616F,
+	DRM_FORMAT_ABGR16161616F,
+	DRM_FORMAT_YUYV,
+	DRM_FORMAT_YVYU,
+	DRM_FORMAT_UYVY,
+	DRM_FORMAT_VYUY,
+	DRM_FORMAT_NV12,
+	DRM_FORMAT_P010,
+	DRM_FORMAT_P012,
+	DRM_FORMAT_P016,
+	DRM_FORMAT_Y210,
+	DRM_FORMAT_Y212,
+	DRM_FORMAT_Y216,
+	DRM_FORMAT_XYUV8888,
+	DRM_FORMAT_XVYU2101010,
+	DRM_FORMAT_XVYU12_16161616,
+	DRM_FORMAT_XVYU16161616,
+};
+
+int skl_format_to_fourcc(int format, bool rgb_order, bool alpha)
+{
+	switch (format) {
+	case PLANE_CTL_FORMAT_RGB_565:
+		return DRM_FORMAT_RGB565;
+	case PLANE_CTL_FORMAT_NV12:
+		return DRM_FORMAT_NV12;
+	case PLANE_CTL_FORMAT_XYUV:
+		return DRM_FORMAT_XYUV8888;
+	case PLANE_CTL_FORMAT_P010:
+		return DRM_FORMAT_P010;
+	case PLANE_CTL_FORMAT_P012:
+		return DRM_FORMAT_P012;
+	case PLANE_CTL_FORMAT_P016:
+		return DRM_FORMAT_P016;
+	case PLANE_CTL_FORMAT_Y210:
+		return DRM_FORMAT_Y210;
+	case PLANE_CTL_FORMAT_Y212:
+		return DRM_FORMAT_Y212;
+	case PLANE_CTL_FORMAT_Y216:
+		return DRM_FORMAT_Y216;
+	case PLANE_CTL_FORMAT_Y410:
+		return DRM_FORMAT_XVYU2101010;
+	case PLANE_CTL_FORMAT_Y412:
+		return DRM_FORMAT_XVYU12_16161616;
+	case PLANE_CTL_FORMAT_Y416:
+		return DRM_FORMAT_XVYU16161616;
+	default:
+	case PLANE_CTL_FORMAT_XRGB_8888:
+		if (rgb_order) {
+			if (alpha)
+				return DRM_FORMAT_ABGR8888;
+			else
+				return DRM_FORMAT_XBGR8888;
+		} else {
+			if (alpha)
+				return DRM_FORMAT_ARGB8888;
+			else
+				return DRM_FORMAT_XRGB8888;
+		}
+	case PLANE_CTL_FORMAT_XRGB_2101010:
+		if (rgb_order) {
+			if (alpha)
+				return DRM_FORMAT_ABGR2101010;
+			else
+				return DRM_FORMAT_XBGR2101010;
+		} else {
+			if (alpha)
+				return DRM_FORMAT_ARGB2101010;
+			else
+				return DRM_FORMAT_XRGB2101010;
+		}
+	case PLANE_CTL_FORMAT_XRGB_16161616F:
+		if (rgb_order) {
+			if (alpha)
+				return DRM_FORMAT_ABGR16161616F;
+			else
+				return DRM_FORMAT_XBGR16161616F;
+		} else {
+			if (alpha)
+				return DRM_FORMAT_ARGB16161616F;
+			else
+				return DRM_FORMAT_XRGB16161616F;
+		}
+	}
+}
+
+static u8 icl_nv12_y_plane_mask(struct drm_i915_private *i915)
+{
+	if (DISPLAY_VER(i915) >= 13 || HAS_D12_PLANE_MINIMIZATION(i915))
+		return BIT(PLANE_SPRITE2) | BIT(PLANE_SPRITE3);
+	else
+		return BIT(PLANE_SPRITE4) | BIT(PLANE_SPRITE5);
+}
+
+bool icl_is_nv12_y_plane(struct drm_i915_private *dev_priv,
+			 enum plane_id plane_id)
+{
+	return DISPLAY_VER(dev_priv) >= 11 &&
+		icl_nv12_y_plane_mask(dev_priv) & BIT(plane_id);
+}
+
+bool icl_is_hdr_plane(struct drm_i915_private *dev_priv, enum plane_id plane_id)
+{
+	return DISPLAY_VER(dev_priv) >= 11 &&
+		icl_hdr_plane_mask() & BIT(plane_id);
+}
+
+static int icl_plane_min_cdclk(const struct intel_crtc_state *crtc_state,
+			       const struct intel_plane_state *plane_state)
+{
+	unsigned int pixel_rate = intel_plane_pixel_rate(crtc_state, plane_state);
+
+	/* two pixels per clock */
+	return DIV_ROUND_UP(pixel_rate, 2);
+}
+
+static void
+glk_plane_ratio(const struct intel_plane_state *plane_state,
+		unsigned int *num, unsigned int *den)
+{
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+
+	if (fb->format->cpp[0] == 8) {
+		*num = 10;
+		*den = 8;
+	} else {
+		*num = 1;
+		*den = 1;
+	}
+}
+
+static int glk_plane_min_cdclk(const struct intel_crtc_state *crtc_state,
+			       const struct intel_plane_state *plane_state)
+{
+	unsigned int pixel_rate = intel_plane_pixel_rate(crtc_state, plane_state);
+	unsigned int num, den;
+
+	glk_plane_ratio(plane_state, &num, &den);
+
+	/* two pixels per clock */
+	return DIV_ROUND_UP(pixel_rate * num, 2 * den);
+}
+
+static void
+skl_plane_ratio(const struct intel_plane_state *plane_state,
+		unsigned int *num, unsigned int *den)
+{
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+
+	if (fb->format->cpp[0] == 8) {
+		*num = 9;
+		*den = 8;
+	} else {
+		*num = 1;
+		*den = 1;
+	}
+}
+
+static int skl_plane_min_cdclk(const struct intel_crtc_state *crtc_state,
+			       const struct intel_plane_state *plane_state)
+{
+	unsigned int pixel_rate = intel_plane_pixel_rate(crtc_state, plane_state);
+	unsigned int num, den;
+
+	skl_plane_ratio(plane_state, &num, &den);
+
+	return DIV_ROUND_UP(pixel_rate * num, den);
+}
+
+static int skl_plane_max_width(const struct drm_framebuffer *fb,
+			       int color_plane,
+			       unsigned int rotation)
+{
+	int cpp = fb->format->cpp[color_plane];
+
+	switch (fb->modifier) {
+	case DRM_FORMAT_MOD_LINEAR:
+	case I915_FORMAT_MOD_X_TILED:
+		/*
+		 * Validated limit is 4k, but has 5k should
+		 * work apart from the following features:
+		 * - Ytile (already limited to 4k)
+		 * - FP16 (already limited to 4k)
+		 * - render compression (already limited to 4k)
+		 * - KVMR sprite and cursor (don't care)
+		 * - horizontal panning (TODO verify this)
+		 * - pipe and plane scaling (TODO verify this)
+		 */
+		if (cpp == 8)
+			return 4096;
+		else
+			return 5120;
+	case I915_FORMAT_MOD_Y_TILED_CCS:
+	case I915_FORMAT_MOD_Yf_TILED_CCS:
+	case I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS:
+		/* FIXME AUX plane? */
+	case I915_FORMAT_MOD_Y_TILED:
+	case I915_FORMAT_MOD_Yf_TILED:
+		if (cpp == 8)
+			return 2048;
+		else
+			return 4096;
+	default:
+		MISSING_CASE(fb->modifier);
+		return 2048;
+	}
+}
+
+static int glk_plane_max_width(const struct drm_framebuffer *fb,
+			       int color_plane,
+			       unsigned int rotation)
+{
+	int cpp = fb->format->cpp[color_plane];
+
+	switch (fb->modifier) {
+	case DRM_FORMAT_MOD_LINEAR:
+	case I915_FORMAT_MOD_X_TILED:
+		if (cpp == 8)
+			return 4096;
+		else
+			return 5120;
+	case I915_FORMAT_MOD_Y_TILED_CCS:
+	case I915_FORMAT_MOD_Yf_TILED_CCS:
+		/* FIXME AUX plane? */
+	case I915_FORMAT_MOD_Y_TILED:
+	case I915_FORMAT_MOD_Yf_TILED:
+		if (cpp == 8)
+			return 2048;
+		else
+			return 5120;
+	default:
+		MISSING_CASE(fb->modifier);
+		return 2048;
+	}
+}
+
+static int icl_plane_min_width(const struct drm_framebuffer *fb,
+			       int color_plane,
+			       unsigned int rotation)
+{
+	/* Wa_14011264657, Wa_14011050563: gen11+ */
+	switch (fb->format->format) {
+	case DRM_FORMAT_C8:
+		return 18;
+	case DRM_FORMAT_RGB565:
+		return 10;
+	case DRM_FORMAT_XRGB8888:
+	case DRM_FORMAT_XBGR8888:
+	case DRM_FORMAT_ARGB8888:
+	case DRM_FORMAT_ABGR8888:
+	case DRM_FORMAT_XRGB2101010:
+	case DRM_FORMAT_XBGR2101010:
+	case DRM_FORMAT_ARGB2101010:
+	case DRM_FORMAT_ABGR2101010:
+	case DRM_FORMAT_XVYU2101010:
+	case DRM_FORMAT_Y212:
+	case DRM_FORMAT_Y216:
+		return 6;
+	case DRM_FORMAT_NV12:
+		return 20;
+	case DRM_FORMAT_P010:
+	case DRM_FORMAT_P012:
+	case DRM_FORMAT_P016:
+		return 12;
+	case DRM_FORMAT_XRGB16161616F:
+	case DRM_FORMAT_XBGR16161616F:
+	case DRM_FORMAT_ARGB16161616F:
+	case DRM_FORMAT_ABGR16161616F:
+	case DRM_FORMAT_XVYU12_16161616:
+	case DRM_FORMAT_XVYU16161616:
+		return 4;
+	default:
+		return 1;
+	}
+}
+
+static int icl_hdr_plane_max_width(const struct drm_framebuffer *fb,
+				   int color_plane,
+				   unsigned int rotation)
+{
+	if (intel_format_info_is_yuv_semiplanar(fb->format, fb->modifier))
+		return 4096;
+	else
+		return 5120;
+}
+
+static int icl_sdr_plane_max_width(const struct drm_framebuffer *fb,
+				   int color_plane,
+				   unsigned int rotation)
+{
+	return 5120;
+}
+
+static int skl_plane_max_height(const struct drm_framebuffer *fb,
+				int color_plane,
+				unsigned int rotation)
+{
+	return 4096;
+}
+
+static int icl_plane_max_height(const struct drm_framebuffer *fb,
+				int color_plane,
+				unsigned int rotation)
+{
+	return 4320;
+}
+
+static unsigned int
+skl_plane_max_stride(struct intel_plane *plane,
+		     u32 pixel_format, u64 modifier,
+		     unsigned int rotation)
+{
+	struct drm_i915_private *i915 = to_i915(plane->base.dev);
+	const struct drm_format_info *info = drm_format_info(pixel_format);
+	int cpp = info->cpp[0];
+	int max_horizontal_pixels = 8192;
+	int max_stride_bytes;
+
+	if (DISPLAY_VER(i915) >= 13) {
+		/*
+		 * The stride in bytes must not exceed of the size
+		 * of 128K bytes. For pixel formats of 64bpp will allow
+		 * for a 16K pixel surface.
+		 */
+		max_stride_bytes = 131072;
+		if (cpp == 8)
+			max_horizontal_pixels = 16384;
+		else
+			max_horizontal_pixels = 65536;
+	} else {
+		/*
+		 * "The stride in bytes must not exceed the
+		 * of the size of 8K pixels and 32K bytes."
+		 */
+		max_stride_bytes = 32768;
+	}
+
+	if (drm_rotation_90_or_270(rotation))
+		return min(max_horizontal_pixels, max_stride_bytes / cpp);
+	else
+		return min(max_horizontal_pixels * cpp, max_stride_bytes);
+}
+
+
+/* Preoffset values for YUV to RGB Conversion */
+#define PREOFF_YUV_TO_RGB_HI		0x1800
+#define PREOFF_YUV_TO_RGB_ME		0x0000
+#define PREOFF_YUV_TO_RGB_LO		0x1800
+
+#define  ROFF(x)          (((x) & 0xffff) << 16)
+#define  GOFF(x)          (((x) & 0xffff) << 0)
+#define  BOFF(x)          (((x) & 0xffff) << 16)
+
+/*
+ * Programs the input color space conversion stage for ICL HDR planes.
+ * Note that it is assumed that this stage always happens after YUV
+ * range correction. Thus, the input to this stage is assumed to be
+ * in full-range YCbCr.
+ */
+static void
+icl_program_input_csc(struct intel_plane *plane,
+		      const struct intel_crtc_state *crtc_state,
+		      const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum pipe pipe = plane->pipe;
+	enum plane_id plane_id = plane->id;
+
+	static const u16 input_csc_matrix[][9] = {
+		/*
+		 * BT.601 full range YCbCr -> full range RGB
+		 * The matrix required is :
+		 * [1.000, 0.000, 1.371,
+		 *  1.000, -0.336, -0.698,
+		 *  1.000, 1.732, 0.0000]
+		 */
+		[DRM_COLOR_YCBCR_BT601] = {
+			0x7AF8, 0x7800, 0x0,
+			0x8B28, 0x7800, 0x9AC0,
+			0x0, 0x7800, 0x7DD8,
+		},
+		/*
+		 * BT.709 full range YCbCr -> full range RGB
+		 * The matrix required is :
+		 * [1.000, 0.000, 1.574,
+		 *  1.000, -0.187, -0.468,
+		 *  1.000, 1.855, 0.0000]
+		 */
+		[DRM_COLOR_YCBCR_BT709] = {
+			0x7C98, 0x7800, 0x0,
+			0x9EF8, 0x7800, 0xAC00,
+			0x0, 0x7800,  0x7ED8,
+		},
+		/*
+		 * BT.2020 full range YCbCr -> full range RGB
+		 * The matrix required is :
+		 * [1.000, 0.000, 1.474,
+		 *  1.000, -0.1645, -0.5713,
+		 *  1.000, 1.8814, 0.0000]
+		 */
+		[DRM_COLOR_YCBCR_BT2020] = {
+			0x7BC8, 0x7800, 0x0,
+			0x8928, 0x7800, 0xAA88,
+			0x0, 0x7800, 0x7F10,
+		},
+	};
+	const u16 *csc = input_csc_matrix[plane_state->hw.color_encoding];
+
+	intel_de_write_fw(dev_priv, PLANE_INPUT_CSC_COEFF(pipe, plane_id, 0),
+			  ROFF(csc[0]) | GOFF(csc[1]));
+	intel_de_write_fw(dev_priv, PLANE_INPUT_CSC_COEFF(pipe, plane_id, 1),
+			  BOFF(csc[2]));
+	intel_de_write_fw(dev_priv, PLANE_INPUT_CSC_COEFF(pipe, plane_id, 2),
+			  ROFF(csc[3]) | GOFF(csc[4]));
+	intel_de_write_fw(dev_priv, PLANE_INPUT_CSC_COEFF(pipe, plane_id, 3),
+			  BOFF(csc[5]));
+	intel_de_write_fw(dev_priv, PLANE_INPUT_CSC_COEFF(pipe, plane_id, 4),
+			  ROFF(csc[6]) | GOFF(csc[7]));
+	intel_de_write_fw(dev_priv, PLANE_INPUT_CSC_COEFF(pipe, plane_id, 5),
+			  BOFF(csc[8]));
+
+	intel_de_write_fw(dev_priv, PLANE_INPUT_CSC_PREOFF(pipe, plane_id, 0),
+			  PREOFF_YUV_TO_RGB_HI);
+	intel_de_write_fw(dev_priv, PLANE_INPUT_CSC_PREOFF(pipe, plane_id, 1),
+			  PREOFF_YUV_TO_RGB_ME);
+	intel_de_write_fw(dev_priv, PLANE_INPUT_CSC_PREOFF(pipe, plane_id, 2),
+			  PREOFF_YUV_TO_RGB_LO);
+	intel_de_write_fw(dev_priv,
+			  PLANE_INPUT_CSC_POSTOFF(pipe, plane_id, 0), 0x0);
+	intel_de_write_fw(dev_priv,
+			  PLANE_INPUT_CSC_POSTOFF(pipe, plane_id, 1), 0x0);
+	intel_de_write_fw(dev_priv,
+			  PLANE_INPUT_CSC_POSTOFF(pipe, plane_id, 2), 0x0);
+}
+
+static unsigned int skl_plane_stride_mult(const struct drm_framebuffer *fb,
+					  int color_plane, unsigned int rotation)
+{
+	/*
+	 * The stride is either expressed as a multiple of 64 bytes chunks for
+	 * linear buffers or in number of tiles for tiled buffers.
+	 */
+	if (is_surface_linear(fb, color_plane))
+		return 64;
+	else if (drm_rotation_90_or_270(rotation))
+		return intel_tile_height(fb, color_plane);
+	else
+		return intel_tile_width_bytes(fb, color_plane);
+}
+
+static u32 skl_plane_stride(const struct intel_plane_state *plane_state,
+			    int color_plane)
+{
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	unsigned int rotation = plane_state->hw.rotation;
+	u32 stride = plane_state->view.color_plane[color_plane].scanout_stride;
+
+	if (color_plane >= fb->format->num_planes)
+		return 0;
+
+	return stride / skl_plane_stride_mult(fb, color_plane, rotation);
+}
+
+static void
+skl_plane_disable_arm(struct intel_plane *plane,
+		      const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum plane_id plane_id = plane->id;
+	enum pipe pipe = plane->pipe;
+
+	skl_write_plane_wm(plane, crtc_state);
+
+	intel_de_write_fw(dev_priv, PLANE_CTL(pipe, plane_id), 0);
+	intel_de_write_fw(dev_priv, PLANE_SURF(pipe, plane_id), 0);
+}
+
+static void
+icl_plane_disable_arm(struct intel_plane *plane,
+		      const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum plane_id plane_id = plane->id;
+	enum pipe pipe = plane->pipe;
+
+	if (icl_is_hdr_plane(dev_priv, plane_id))
+		intel_de_write_fw(dev_priv, PLANE_CUS_CTL(pipe, plane_id), 0);
+
+	skl_write_plane_wm(plane, crtc_state);
+
+	intel_psr2_disable_plane_sel_fetch(plane, crtc_state);
+	intel_de_write_fw(dev_priv, PLANE_CTL(pipe, plane_id), 0);
+	intel_de_write_fw(dev_priv, PLANE_SURF(pipe, plane_id), 0);
+}
+
+static bool
+skl_plane_get_hw_state(struct intel_plane *plane,
+		       enum pipe *pipe)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum intel_display_power_domain power_domain;
+	enum plane_id plane_id = plane->id;
+	intel_wakeref_t wakeref;
+	bool ret;
+
+	power_domain = POWER_DOMAIN_PIPE(plane->pipe);
+	wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
+	if (!wakeref)
+		return false;
+
+	ret = intel_de_read(dev_priv, PLANE_CTL(plane->pipe, plane_id)) & PLANE_CTL_ENABLE;
+
+	*pipe = plane->pipe;
+
+	intel_display_power_put(dev_priv, power_domain, wakeref);
+
+	return ret;
+}
+
+static u32 skl_plane_ctl_format(u32 pixel_format)
+{
+	switch (pixel_format) {
+	case DRM_FORMAT_C8:
+		return PLANE_CTL_FORMAT_INDEXED;
+	case DRM_FORMAT_RGB565:
+		return PLANE_CTL_FORMAT_RGB_565;
+	case DRM_FORMAT_XBGR8888:
+	case DRM_FORMAT_ABGR8888:
+		return PLANE_CTL_FORMAT_XRGB_8888 | PLANE_CTL_ORDER_RGBX;
+	case DRM_FORMAT_XRGB8888:
+	case DRM_FORMAT_ARGB8888:
+		return PLANE_CTL_FORMAT_XRGB_8888;
+	case DRM_FORMAT_XBGR2101010:
+	case DRM_FORMAT_ABGR2101010:
+		return PLANE_CTL_FORMAT_XRGB_2101010 | PLANE_CTL_ORDER_RGBX;
+	case DRM_FORMAT_XRGB2101010:
+	case DRM_FORMAT_ARGB2101010:
+		return PLANE_CTL_FORMAT_XRGB_2101010;
+	case DRM_FORMAT_XBGR16161616F:
+	case DRM_FORMAT_ABGR16161616F:
+		return PLANE_CTL_FORMAT_XRGB_16161616F | PLANE_CTL_ORDER_RGBX;
+	case DRM_FORMAT_XRGB16161616F:
+	case DRM_FORMAT_ARGB16161616F:
+		return PLANE_CTL_FORMAT_XRGB_16161616F;
+	case DRM_FORMAT_XYUV8888:
+		return PLANE_CTL_FORMAT_XYUV;
+	case DRM_FORMAT_YUYV:
+		return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_ORDER_YUYV;
+	case DRM_FORMAT_YVYU:
+		return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_ORDER_YVYU;
+	case DRM_FORMAT_UYVY:
+		return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_ORDER_UYVY;
+	case DRM_FORMAT_VYUY:
+		return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_ORDER_VYUY;
+	case DRM_FORMAT_NV12:
+		return PLANE_CTL_FORMAT_NV12;
+	case DRM_FORMAT_P010:
+		return PLANE_CTL_FORMAT_P010;
+	case DRM_FORMAT_P012:
+		return PLANE_CTL_FORMAT_P012;
+	case DRM_FORMAT_P016:
+		return PLANE_CTL_FORMAT_P016;
+	case DRM_FORMAT_Y210:
+		return PLANE_CTL_FORMAT_Y210;
+	case DRM_FORMAT_Y212:
+		return PLANE_CTL_FORMAT_Y212;
+	case DRM_FORMAT_Y216:
+		return PLANE_CTL_FORMAT_Y216;
+	case DRM_FORMAT_XVYU2101010:
+		return PLANE_CTL_FORMAT_Y410;
+	case DRM_FORMAT_XVYU12_16161616:
+		return PLANE_CTL_FORMAT_Y412;
+	case DRM_FORMAT_XVYU16161616:
+		return PLANE_CTL_FORMAT_Y416;
+	default:
+		MISSING_CASE(pixel_format);
+	}
+
+	return 0;
+}
+
+static u32 skl_plane_ctl_alpha(const struct intel_plane_state *plane_state)
+{
+	if (!plane_state->hw.fb->format->has_alpha)
+		return PLANE_CTL_ALPHA_DISABLE;
+
+	switch (plane_state->hw.pixel_blend_mode) {
+	case DRM_MODE_BLEND_PIXEL_NONE:
+		return PLANE_CTL_ALPHA_DISABLE;
+	case DRM_MODE_BLEND_PREMULTI:
+		return PLANE_CTL_ALPHA_SW_PREMULTIPLY;
+	case DRM_MODE_BLEND_COVERAGE:
+		return PLANE_CTL_ALPHA_HW_PREMULTIPLY;
+	default:
+		MISSING_CASE(plane_state->hw.pixel_blend_mode);
+		return PLANE_CTL_ALPHA_DISABLE;
+	}
+}
+
+static u32 glk_plane_color_ctl_alpha(const struct intel_plane_state *plane_state)
+{
+	if (!plane_state->hw.fb->format->has_alpha)
+		return PLANE_COLOR_ALPHA_DISABLE;
+
+	switch (plane_state->hw.pixel_blend_mode) {
+	case DRM_MODE_BLEND_PIXEL_NONE:
+		return PLANE_COLOR_ALPHA_DISABLE;
+	case DRM_MODE_BLEND_PREMULTI:
+		return PLANE_COLOR_ALPHA_SW_PREMULTIPLY;
+	case DRM_MODE_BLEND_COVERAGE:
+		return PLANE_COLOR_ALPHA_HW_PREMULTIPLY;
+	default:
+		MISSING_CASE(plane_state->hw.pixel_blend_mode);
+		return PLANE_COLOR_ALPHA_DISABLE;
+	}
+}
+
+static u32 skl_plane_ctl_tiling(u64 fb_modifier)
+{
+	switch (fb_modifier) {
+	case DRM_FORMAT_MOD_LINEAR:
+		break;
+	case I915_FORMAT_MOD_X_TILED:
+		return PLANE_CTL_TILED_X;
+	case I915_FORMAT_MOD_Y_TILED:
+		return PLANE_CTL_TILED_Y;
+	case I915_FORMAT_MOD_4_TILED:
+		return PLANE_CTL_TILED_4;
+	case I915_FORMAT_MOD_4_TILED_DG2_RC_CCS:
+		return PLANE_CTL_TILED_4 |
+			PLANE_CTL_RENDER_DECOMPRESSION_ENABLE |
+			PLANE_CTL_CLEAR_COLOR_DISABLE;
+	case I915_FORMAT_MOD_4_TILED_DG2_MC_CCS:
+		return PLANE_CTL_TILED_4 |
+			PLANE_CTL_MEDIA_DECOMPRESSION_ENABLE |
+			PLANE_CTL_CLEAR_COLOR_DISABLE;
+	case I915_FORMAT_MOD_4_TILED_DG2_RC_CCS_CC:
+		return PLANE_CTL_TILED_4 | PLANE_CTL_RENDER_DECOMPRESSION_ENABLE;
+	case I915_FORMAT_MOD_Y_TILED_CCS:
+	case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC:
+		return PLANE_CTL_TILED_Y | PLANE_CTL_RENDER_DECOMPRESSION_ENABLE;
+	case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS:
+		return PLANE_CTL_TILED_Y |
+		       PLANE_CTL_RENDER_DECOMPRESSION_ENABLE |
+		       PLANE_CTL_CLEAR_COLOR_DISABLE;
+	case I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS:
+		return PLANE_CTL_TILED_Y | PLANE_CTL_MEDIA_DECOMPRESSION_ENABLE;
+	case I915_FORMAT_MOD_Yf_TILED:
+		return PLANE_CTL_TILED_YF;
+	case I915_FORMAT_MOD_Yf_TILED_CCS:
+		return PLANE_CTL_TILED_YF | PLANE_CTL_RENDER_DECOMPRESSION_ENABLE;
+	default:
+		MISSING_CASE(fb_modifier);
+	}
+
+	return 0;
+}
+
+static u32 skl_plane_ctl_rotate(unsigned int rotate)
+{
+	switch (rotate) {
+	case DRM_MODE_ROTATE_0:
+		break;
+	/*
+	 * DRM_MODE_ROTATE_ is counter clockwise to stay compatible with Xrandr
+	 * while i915 HW rotation is clockwise, thats why this swapping.
+	 */
+	case DRM_MODE_ROTATE_90:
+		return PLANE_CTL_ROTATE_270;
+	case DRM_MODE_ROTATE_180:
+		return PLANE_CTL_ROTATE_180;
+	case DRM_MODE_ROTATE_270:
+		return PLANE_CTL_ROTATE_90;
+	default:
+		MISSING_CASE(rotate);
+	}
+
+	return 0;
+}
+
+static u32 icl_plane_ctl_flip(unsigned int reflect)
+{
+	switch (reflect) {
+	case 0:
+		break;
+	case DRM_MODE_REFLECT_X:
+		return PLANE_CTL_FLIP_HORIZONTAL;
+	case DRM_MODE_REFLECT_Y:
+	default:
+		MISSING_CASE(reflect);
+	}
+
+	return 0;
+}
+
+static u32 adlp_plane_ctl_arb_slots(const struct intel_plane_state *plane_state)
+{
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+
+	if (intel_format_info_is_yuv_semiplanar(fb->format, fb->modifier)) {
+		switch (fb->format->cpp[0]) {
+		case 2:
+			return PLANE_CTL_ARB_SLOTS(1);
+		default:
+			return PLANE_CTL_ARB_SLOTS(0);
+		}
+	} else {
+		switch (fb->format->cpp[0]) {
+		case 8:
+			return PLANE_CTL_ARB_SLOTS(3);
+		case 4:
+			return PLANE_CTL_ARB_SLOTS(1);
+		default:
+			return PLANE_CTL_ARB_SLOTS(0);
+		}
+	}
+}
+
+static u32 skl_plane_ctl_crtc(const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+	u32 plane_ctl = 0;
+
+	if (DISPLAY_VER(dev_priv) >= 10)
+		return plane_ctl;
+
+	if (crtc_state->gamma_enable)
+		plane_ctl |= PLANE_CTL_PIPE_GAMMA_ENABLE;
+
+	if (crtc_state->csc_enable)
+		plane_ctl |= PLANE_CTL_PIPE_CSC_ENABLE;
+
+	return plane_ctl;
+}
+
+static u32 skl_plane_ctl(const struct intel_crtc_state *crtc_state,
+			 const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv =
+		to_i915(plane_state->uapi.plane->dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	unsigned int rotation = plane_state->hw.rotation;
+	const struct drm_intel_sprite_colorkey *key = &plane_state->ckey;
+	u32 plane_ctl;
+
+	plane_ctl = PLANE_CTL_ENABLE;
+
+	if (DISPLAY_VER(dev_priv) < 10) {
+		plane_ctl |= skl_plane_ctl_alpha(plane_state);
+		plane_ctl |= PLANE_CTL_PLANE_GAMMA_DISABLE;
+
+		if (plane_state->hw.color_encoding == DRM_COLOR_YCBCR_BT709)
+			plane_ctl |= PLANE_CTL_YUV_TO_RGB_CSC_FORMAT_BT709;
+
+		if (plane_state->hw.color_range == DRM_COLOR_YCBCR_FULL_RANGE)
+			plane_ctl |= PLANE_CTL_YUV_RANGE_CORRECTION_DISABLE;
+	}
+
+	plane_ctl |= skl_plane_ctl_format(fb->format->format);
+	plane_ctl |= skl_plane_ctl_tiling(fb->modifier);
+	plane_ctl |= skl_plane_ctl_rotate(rotation & DRM_MODE_ROTATE_MASK);
+
+	if (DISPLAY_VER(dev_priv) >= 11)
+		plane_ctl |= icl_plane_ctl_flip(rotation &
+						DRM_MODE_REFLECT_MASK);
+
+	if (key->flags & I915_SET_COLORKEY_DESTINATION)
+		plane_ctl |= PLANE_CTL_KEY_ENABLE_DESTINATION;
+	else if (key->flags & I915_SET_COLORKEY_SOURCE)
+		plane_ctl |= PLANE_CTL_KEY_ENABLE_SOURCE;
+
+	/* Wa_22012358565:adl-p */
+	if (DISPLAY_VER(dev_priv) == 13)
+		plane_ctl |= adlp_plane_ctl_arb_slots(plane_state);
+
+	return plane_ctl;
+}
+
+static u32 glk_plane_color_ctl_crtc(const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+	u32 plane_color_ctl = 0;
+
+	if (DISPLAY_VER(dev_priv) >= 11)
+		return plane_color_ctl;
+
+	if (crtc_state->gamma_enable)
+		plane_color_ctl |= PLANE_COLOR_PIPE_GAMMA_ENABLE;
+
+	if (crtc_state->csc_enable)
+		plane_color_ctl |= PLANE_COLOR_PIPE_CSC_ENABLE;
+
+	return plane_color_ctl;
+}
+
+static u32 glk_plane_color_ctl(const struct intel_crtc_state *crtc_state,
+			       const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv =
+		to_i915(plane_state->uapi.plane->dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	u32 plane_color_ctl = 0;
+
+	plane_color_ctl |= PLANE_COLOR_PLANE_GAMMA_DISABLE;
+	plane_color_ctl |= glk_plane_color_ctl_alpha(plane_state);
+
+	if (fb->format->is_yuv && !icl_is_hdr_plane(dev_priv, plane->id)) {
+		switch (plane_state->hw.color_encoding) {
+		case DRM_COLOR_YCBCR_BT709:
+			plane_color_ctl |= PLANE_COLOR_CSC_MODE_YUV709_TO_RGB709;
+			break;
+		case DRM_COLOR_YCBCR_BT2020:
+			plane_color_ctl |=
+				PLANE_COLOR_CSC_MODE_YUV2020_TO_RGB2020;
+			break;
+		default:
+			plane_color_ctl |=
+				PLANE_COLOR_CSC_MODE_YUV601_TO_RGB601;
+		}
+		if (plane_state->hw.color_range == DRM_COLOR_YCBCR_FULL_RANGE)
+			plane_color_ctl |= PLANE_COLOR_YUV_RANGE_CORRECTION_DISABLE;
+	} else if (fb->format->is_yuv) {
+		plane_color_ctl |= PLANE_COLOR_INPUT_CSC_ENABLE;
+		if (plane_state->hw.color_range == DRM_COLOR_YCBCR_FULL_RANGE)
+			plane_color_ctl |= PLANE_COLOR_YUV_RANGE_CORRECTION_DISABLE;
+	}
+
+	if (plane_state->force_black)
+		plane_color_ctl |= PLANE_COLOR_PLANE_CSC_ENABLE;
+
+	return plane_color_ctl;
+}
+
+static u32 skl_surf_address(const struct intel_plane_state *plane_state,
+			    int color_plane)
+{
+	struct drm_i915_private *i915 = to_i915(plane_state->uapi.plane->dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	u32 offset = plane_state->view.color_plane[color_plane].offset;
+
+	if (intel_fb_uses_dpt(fb)) {
+		/*
+		 * The DPT object contains only one vma, so the VMA's offset
+		 * within the DPT is always 0.
+		 */
+		drm_WARN_ON(&i915->drm, plane_state->dpt_vma->node.start);
+		drm_WARN_ON(&i915->drm, offset & 0x1fffff);
+		return offset >> 9;
+	} else {
+		drm_WARN_ON(&i915->drm, offset & 0xfff);
+		return offset;
+	}
+}
+
+static u32 skl_plane_surf(const struct intel_plane_state *plane_state,
+			  int color_plane)
+{
+	u32 plane_surf;
+
+	plane_surf = intel_plane_ggtt_offset(plane_state) +
+		skl_surf_address(plane_state, color_plane);
+
+	if (plane_state->decrypt)
+		plane_surf |= PLANE_SURF_DECRYPT;
+
+	return plane_surf;
+}
+
+static u32 skl_plane_aux_dist(const struct intel_plane_state *plane_state,
+			      int color_plane)
+{
+	struct drm_i915_private *i915 = to_i915(plane_state->uapi.plane->dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	int aux_plane = skl_main_to_aux_plane(fb, color_plane);
+	u32 aux_dist;
+
+	if (!aux_plane)
+		return 0;
+
+	aux_dist = skl_surf_address(plane_state, aux_plane) -
+		skl_surf_address(plane_state, color_plane);
+
+	if (DISPLAY_VER(i915) < 12)
+		aux_dist |= PLANE_AUX_STRIDE(skl_plane_stride(plane_state, aux_plane));
+
+	return aux_dist;
+}
+
+static u32 skl_plane_keyval(const struct intel_plane_state *plane_state)
+{
+	const struct drm_intel_sprite_colorkey *key = &plane_state->ckey;
+
+	return key->min_value;
+}
+
+static u32 skl_plane_keymax(const struct intel_plane_state *plane_state)
+{
+	const struct drm_intel_sprite_colorkey *key = &plane_state->ckey;
+	u8 alpha = plane_state->hw.alpha >> 8;
+
+	return (key->max_value & 0xffffff) | PLANE_KEYMAX_ALPHA(alpha);
+}
+
+static u32 skl_plane_keymsk(const struct intel_plane_state *plane_state)
+{
+	const struct drm_intel_sprite_colorkey *key = &plane_state->ckey;
+	u8 alpha = plane_state->hw.alpha >> 8;
+	u32 keymsk;
+
+	keymsk = key->channel_mask & 0x7ffffff;
+	if (alpha < 0xff)
+		keymsk |= PLANE_KEYMSK_ALPHA_ENABLE;
+
+	return keymsk;
+}
+
+static void icl_plane_csc_load_black(struct intel_plane *plane)
+{
+	struct drm_i915_private *i915 = to_i915(plane->base.dev);
+	enum plane_id plane_id = plane->id;
+	enum pipe pipe = plane->pipe;
+
+	intel_de_write_fw(i915, PLANE_CSC_COEFF(pipe, plane_id, 0), 0);
+	intel_de_write_fw(i915, PLANE_CSC_COEFF(pipe, plane_id, 1), 0);
+
+	intel_de_write_fw(i915, PLANE_CSC_COEFF(pipe, plane_id, 2), 0);
+	intel_de_write_fw(i915, PLANE_CSC_COEFF(pipe, plane_id, 3), 0);
+
+	intel_de_write_fw(i915, PLANE_CSC_COEFF(pipe, plane_id, 4), 0);
+	intel_de_write_fw(i915, PLANE_CSC_COEFF(pipe, plane_id, 5), 0);
+
+	intel_de_write_fw(i915, PLANE_CSC_PREOFF(pipe, plane_id, 0), 0);
+	intel_de_write_fw(i915, PLANE_CSC_PREOFF(pipe, plane_id, 1), 0);
+	intel_de_write_fw(i915, PLANE_CSC_PREOFF(pipe, plane_id, 2), 0);
+
+	intel_de_write_fw(i915, PLANE_CSC_POSTOFF(pipe, plane_id, 0), 0);
+	intel_de_write_fw(i915, PLANE_CSC_POSTOFF(pipe, plane_id, 1), 0);
+	intel_de_write_fw(i915, PLANE_CSC_POSTOFF(pipe, plane_id, 2), 0);
+}
+
+static int icl_plane_color_plane(const struct intel_plane_state *plane_state)
+{
+	/* Program the UV plane on planar master */
+	if (plane_state->planar_linked_plane && !plane_state->planar_slave)
+		return 1;
+	else
+		return 0;
+}
+
+static void
+skl_plane_update_noarm(struct intel_plane *plane,
+		       const struct intel_crtc_state *crtc_state,
+		       const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum plane_id plane_id = plane->id;
+	enum pipe pipe = plane->pipe;
+	u32 stride = skl_plane_stride(plane_state, 0);
+	int crtc_x = plane_state->uapi.dst.x1;
+	int crtc_y = plane_state->uapi.dst.y1;
+	u32 src_w = drm_rect_width(&plane_state->uapi.src) >> 16;
+	u32 src_h = drm_rect_height(&plane_state->uapi.src) >> 16;
+
+	/* The scaler will handle the output position */
+	if (plane_state->scaler_id >= 0) {
+		crtc_x = 0;
+		crtc_y = 0;
+	}
+
+	intel_de_write_fw(dev_priv, PLANE_STRIDE(pipe, plane_id),
+			  PLANE_STRIDE_(stride));
+	intel_de_write_fw(dev_priv, PLANE_POS(pipe, plane_id),
+			  PLANE_POS_Y(crtc_y) | PLANE_POS_X(crtc_x));
+	intel_de_write_fw(dev_priv, PLANE_SIZE(pipe, plane_id),
+			  PLANE_HEIGHT(src_h - 1) | PLANE_WIDTH(src_w - 1));
+
+	skl_write_plane_wm(plane, crtc_state);
+}
+
+static void
+skl_plane_update_arm(struct intel_plane *plane,
+		     const struct intel_crtc_state *crtc_state,
+		     const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum plane_id plane_id = plane->id;
+	enum pipe pipe = plane->pipe;
+	u32 x = plane_state->view.color_plane[0].x;
+	u32 y = plane_state->view.color_plane[0].y;
+	u32 plane_ctl, plane_color_ctl = 0;
+
+	plane_ctl = plane_state->ctl |
+		skl_plane_ctl_crtc(crtc_state);
+
+	if (DISPLAY_VER(dev_priv) >= 10)
+		plane_color_ctl = plane_state->color_ctl |
+			glk_plane_color_ctl_crtc(crtc_state);
+
+	intel_de_write_fw(dev_priv, PLANE_KEYVAL(pipe, plane_id), skl_plane_keyval(plane_state));
+	intel_de_write_fw(dev_priv, PLANE_KEYMSK(pipe, plane_id), skl_plane_keymsk(plane_state));
+	intel_de_write_fw(dev_priv, PLANE_KEYMAX(pipe, plane_id), skl_plane_keymax(plane_state));
+
+	intel_de_write_fw(dev_priv, PLANE_OFFSET(pipe, plane_id),
+			  PLANE_OFFSET_Y(y) | PLANE_OFFSET_X(x));
+
+	intel_de_write_fw(dev_priv, PLANE_AUX_DIST(pipe, plane_id),
+			  skl_plane_aux_dist(plane_state, 0));
+
+	intel_de_write_fw(dev_priv, PLANE_AUX_OFFSET(pipe, plane_id),
+			  PLANE_OFFSET_Y(plane_state->view.color_plane[1].y) |
+			  PLANE_OFFSET_X(plane_state->view.color_plane[1].x));
+
+	if (DISPLAY_VER(dev_priv) >= 10)
+		intel_de_write_fw(dev_priv, PLANE_COLOR_CTL(pipe, plane_id), plane_color_ctl);
+
+	/*
+	 * Enable the scaler before the plane so that we don't
+	 * get a catastrophic underrun even if the two operations
+	 * end up happening in two different frames.
+	 *
+	 * TODO: split into noarm+arm pair
+	 */
+	if (plane_state->scaler_id >= 0)
+		skl_program_plane_scaler(plane, crtc_state, plane_state);
+
+	/*
+	 * The control register self-arms if the plane was previously
+	 * disabled. Try to make the plane enable atomic by writing
+	 * the control register just before the surface register.
+	 */
+	intel_de_write_fw(dev_priv, PLANE_CTL(pipe, plane_id), plane_ctl);
+	intel_de_write_fw(dev_priv, PLANE_SURF(pipe, plane_id),
+			  skl_plane_surf(plane_state, 0));
+}
+
+static void
+icl_plane_update_noarm(struct intel_plane *plane,
+		       const struct intel_crtc_state *crtc_state,
+		       const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum plane_id plane_id = plane->id;
+	enum pipe pipe = plane->pipe;
+	int color_plane = icl_plane_color_plane(plane_state);
+	u32 stride = skl_plane_stride(plane_state, color_plane);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	int crtc_x = plane_state->uapi.dst.x1;
+	int crtc_y = plane_state->uapi.dst.y1;
+	int x = plane_state->view.color_plane[color_plane].x;
+	int y = plane_state->view.color_plane[color_plane].y;
+	int src_w = drm_rect_width(&plane_state->uapi.src) >> 16;
+	int src_h = drm_rect_height(&plane_state->uapi.src) >> 16;
+	u32 plane_color_ctl;
+
+	plane_color_ctl = plane_state->color_ctl |
+		glk_plane_color_ctl_crtc(crtc_state);
+
+	/* The scaler will handle the output position */
+	if (plane_state->scaler_id >= 0) {
+		crtc_x = 0;
+		crtc_y = 0;
+	}
+
+	intel_de_write_fw(dev_priv, PLANE_STRIDE(pipe, plane_id),
+			  PLANE_STRIDE_(stride));
+	intel_de_write_fw(dev_priv, PLANE_POS(pipe, plane_id),
+			  PLANE_POS_Y(crtc_y) | PLANE_POS_X(crtc_x));
+	intel_de_write_fw(dev_priv, PLANE_SIZE(pipe, plane_id),
+			  PLANE_HEIGHT(src_h - 1) | PLANE_WIDTH(src_w - 1));
+
+	intel_de_write_fw(dev_priv, PLANE_KEYVAL(pipe, plane_id), skl_plane_keyval(plane_state));
+	intel_de_write_fw(dev_priv, PLANE_KEYMSK(pipe, plane_id), skl_plane_keymsk(plane_state));
+	intel_de_write_fw(dev_priv, PLANE_KEYMAX(pipe, plane_id), skl_plane_keymax(plane_state));
+
+	intel_de_write_fw(dev_priv, PLANE_OFFSET(pipe, plane_id),
+			  PLANE_OFFSET_Y(y) | PLANE_OFFSET_X(x));
+
+	if (intel_fb_is_rc_ccs_cc_modifier(fb->modifier)) {
+		intel_de_write_fw(dev_priv, PLANE_CC_VAL(pipe, plane_id, 0),
+				  lower_32_bits(plane_state->ccval));
+		intel_de_write_fw(dev_priv, PLANE_CC_VAL(pipe, plane_id, 1),
+				  upper_32_bits(plane_state->ccval));
+	}
+
+	/* FLAT CCS doesn't need to program AUX_DIST */
+	if (!HAS_FLAT_CCS(dev_priv))
+		intel_de_write_fw(dev_priv, PLANE_AUX_DIST(pipe, plane_id),
+				  skl_plane_aux_dist(plane_state, color_plane));
+
+	if (icl_is_hdr_plane(dev_priv, plane_id))
+		intel_de_write_fw(dev_priv, PLANE_CUS_CTL(pipe, plane_id),
+				  plane_state->cus_ctl);
+
+	intel_de_write_fw(dev_priv, PLANE_COLOR_CTL(pipe, plane_id), plane_color_ctl);
+
+	if (fb->format->is_yuv && icl_is_hdr_plane(dev_priv, plane_id))
+		icl_program_input_csc(plane, crtc_state, plane_state);
+
+	skl_write_plane_wm(plane, crtc_state);
+
+	/*
+	 * FIXME: pxp session invalidation can hit any time even at time of commit
+	 * or after the commit, display content will be garbage.
+	 */
+	if (plane_state->force_black)
+		icl_plane_csc_load_black(plane);
+
+	intel_psr2_program_plane_sel_fetch(plane, crtc_state, plane_state, color_plane);
+}
+
+static void
+icl_plane_update_arm(struct intel_plane *plane,
+		     const struct intel_crtc_state *crtc_state,
+		     const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum plane_id plane_id = plane->id;
+	enum pipe pipe = plane->pipe;
+	int color_plane = icl_plane_color_plane(plane_state);
+	u32 plane_ctl;
+
+	plane_ctl = plane_state->ctl |
+		skl_plane_ctl_crtc(crtc_state);
+
+	/*
+	 * Enable the scaler before the plane so that we don't
+	 * get a catastrophic underrun even if the two operations
+	 * end up happening in two different frames.
+	 *
+	 * TODO: split into noarm+arm pair
+	 */
+	if (plane_state->scaler_id >= 0)
+		skl_program_plane_scaler(plane, crtc_state, plane_state);
+
+	/*
+	 * The control register self-arms if the plane was previously
+	 * disabled. Try to make the plane enable atomic by writing
+	 * the control register just before the surface register.
+	 */
+	intel_de_write_fw(dev_priv, PLANE_CTL(pipe, plane_id), plane_ctl);
+	intel_de_write_fw(dev_priv, PLANE_SURF(pipe, plane_id),
+			  skl_plane_surf(plane_state, color_plane));
+}
+
+static void
+skl_plane_async_flip(struct intel_plane *plane,
+		     const struct intel_crtc_state *crtc_state,
+		     const struct intel_plane_state *plane_state,
+		     bool async_flip)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	enum plane_id plane_id = plane->id;
+	enum pipe pipe = plane->pipe;
+	u32 plane_ctl = plane_state->ctl;
+
+	plane_ctl |= skl_plane_ctl_crtc(crtc_state);
+
+	if (async_flip)
+		plane_ctl |= PLANE_CTL_ASYNC_FLIP;
+
+	intel_de_write_fw(dev_priv, PLANE_CTL(pipe, plane_id), plane_ctl);
+	intel_de_write_fw(dev_priv, PLANE_SURF(pipe, plane_id),
+			  skl_plane_surf(plane_state, 0));
+}
+
+static bool intel_format_is_p01x(u32 format)
+{
+	switch (format) {
+	case DRM_FORMAT_P010:
+	case DRM_FORMAT_P012:
+	case DRM_FORMAT_P016:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static int skl_plane_check_fb(const struct intel_crtc_state *crtc_state,
+			      const struct intel_plane_state *plane_state)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	unsigned int rotation = plane_state->hw.rotation;
+
+	if (!fb)
+		return 0;
+
+	if (rotation & ~(DRM_MODE_ROTATE_0 | DRM_MODE_ROTATE_180) &&
+	    intel_fb_is_ccs_modifier(fb->modifier)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "RC support only with 0/180 degree rotation (%x)\n",
+			    rotation);
+		return -EINVAL;
+	}
+
+	if (rotation & DRM_MODE_REFLECT_X &&
+	    fb->modifier == DRM_FORMAT_MOD_LINEAR) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "horizontal flip is not supported with linear surface formats\n");
+		return -EINVAL;
+	}
+
+	if (drm_rotation_90_or_270(rotation)) {
+		if (!intel_fb_supports_90_270_rotation(to_intel_framebuffer(fb))) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "Y/Yf tiling required for 90/270!\n");
+			return -EINVAL;
+		}
+
+		/*
+		 * 90/270 is not allowed with RGB64 16:16:16:16 and
+		 * Indexed 8-bit. RGB 16-bit 5:6:5 is allowed gen11 onwards.
+		 */
+		switch (fb->format->format) {
+		case DRM_FORMAT_RGB565:
+			if (DISPLAY_VER(dev_priv) >= 11)
+				break;
+			fallthrough;
+		case DRM_FORMAT_C8:
+		case DRM_FORMAT_XRGB16161616F:
+		case DRM_FORMAT_XBGR16161616F:
+		case DRM_FORMAT_ARGB16161616F:
+		case DRM_FORMAT_ABGR16161616F:
+		case DRM_FORMAT_Y210:
+		case DRM_FORMAT_Y212:
+		case DRM_FORMAT_Y216:
+		case DRM_FORMAT_XVYU12_16161616:
+		case DRM_FORMAT_XVYU16161616:
+			drm_dbg_kms(&dev_priv->drm,
+				    "Unsupported pixel format %p4cc for 90/270!\n",
+				    &fb->format->format);
+			return -EINVAL;
+		default:
+			break;
+		}
+	}
+
+	/* Y-tiling is not supported in IF-ID Interlace mode */
+	if (crtc_state->hw.enable &&
+	    crtc_state->hw.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE &&
+	    fb->modifier != DRM_FORMAT_MOD_LINEAR &&
+	    fb->modifier != I915_FORMAT_MOD_X_TILED) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Y/Yf tiling not supported in IF-ID mode\n");
+		return -EINVAL;
+	}
+
+	/* Wa_1606054188:tgl,adl-s */
+	if ((IS_ALDERLAKE_S(dev_priv) || IS_TIGERLAKE(dev_priv)) &&
+	    plane_state->ckey.flags & I915_SET_COLORKEY_SOURCE &&
+	    intel_format_is_p01x(fb->format->format)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Source color keying not supported with P01x formats\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int skl_plane_check_dst_coordinates(const struct intel_crtc_state *crtc_state,
+					   const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv =
+		to_i915(plane_state->uapi.plane->dev);
+	int crtc_x = plane_state->uapi.dst.x1;
+	int crtc_w = drm_rect_width(&plane_state->uapi.dst);
+	int pipe_src_w = drm_rect_width(&crtc_state->pipe_src);
+
+	/*
+	 * Display WA #1175: glk
+	 * Planes other than the cursor may cause FIFO underflow and display
+	 * corruption if starting less than 4 pixels from the right edge of
+	 * the screen.
+	 * Besides the above WA fix the similar problem, where planes other
+	 * than the cursor ending less than 4 pixels from the left edge of the
+	 * screen may cause FIFO underflow and display corruption.
+	 */
+	if (DISPLAY_VER(dev_priv) == 10 &&
+	    (crtc_x + crtc_w < 4 || crtc_x > pipe_src_w - 4)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "requested plane X %s position %d invalid (valid range %d-%d)\n",
+			    crtc_x + crtc_w < 4 ? "end" : "start",
+			    crtc_x + crtc_w < 4 ? crtc_x + crtc_w : crtc_x,
+			    4, pipe_src_w - 4);
+		return -ERANGE;
+	}
+
+	return 0;
+}
+
+static int skl_plane_check_nv12_rotation(const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *i915 = to_i915(plane_state->uapi.plane->dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	unsigned int rotation = plane_state->hw.rotation;
+	int src_w = drm_rect_width(&plane_state->uapi.src) >> 16;
+
+	/* Display WA #1106 */
+	if (intel_format_info_is_yuv_semiplanar(fb->format, fb->modifier) &&
+	    src_w & 3 &&
+	    (rotation == DRM_MODE_ROTATE_270 ||
+	     rotation == (DRM_MODE_REFLECT_X | DRM_MODE_ROTATE_90))) {
+		drm_dbg_kms(&i915->drm, "src width must be multiple of 4 for rotated planar YUV\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int skl_plane_max_scale(struct drm_i915_private *dev_priv,
+			       const struct drm_framebuffer *fb)
+{
+	/*
+	 * We don't yet know the final source width nor
+	 * whether we can use the HQ scaler mode. Assume
+	 * the best case.
+	 * FIXME need to properly check this later.
+	 */
+	if (DISPLAY_VER(dev_priv) >= 10 ||
+	    !intel_format_info_is_yuv_semiplanar(fb->format, fb->modifier))
+		return 0x30000 - 1;
+	else
+		return 0x20000 - 1;
+}
+
+static int intel_plane_min_width(struct intel_plane *plane,
+				 const struct drm_framebuffer *fb,
+				 int color_plane,
+				 unsigned int rotation)
+{
+	if (plane->min_width)
+		return plane->min_width(fb, color_plane, rotation);
+	else
+		return 1;
+}
+
+static int intel_plane_max_width(struct intel_plane *plane,
+				 const struct drm_framebuffer *fb,
+				 int color_plane,
+				 unsigned int rotation)
+{
+	if (plane->max_width)
+		return plane->max_width(fb, color_plane, rotation);
+	else
+		return INT_MAX;
+}
+
+static int intel_plane_max_height(struct intel_plane *plane,
+				  const struct drm_framebuffer *fb,
+				  int color_plane,
+				  unsigned int rotation)
+{
+	if (plane->max_height)
+		return plane->max_height(fb, color_plane, rotation);
+	else
+		return INT_MAX;
+}
+
+static bool
+skl_check_main_ccs_coordinates(struct intel_plane_state *plane_state,
+			       int main_x, int main_y, u32 main_offset,
+			       int ccs_plane)
+{
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	int aux_x = plane_state->view.color_plane[ccs_plane].x;
+	int aux_y = plane_state->view.color_plane[ccs_plane].y;
+	u32 aux_offset = plane_state->view.color_plane[ccs_plane].offset;
+	u32 alignment = intel_surf_alignment(fb, ccs_plane);
+	int hsub;
+	int vsub;
+
+	intel_fb_plane_get_subsampling(&hsub, &vsub, fb, ccs_plane);
+	while (aux_offset >= main_offset && aux_y <= main_y) {
+		int x, y;
+
+		if (aux_x == main_x && aux_y == main_y)
+			break;
+
+		if (aux_offset == 0)
+			break;
+
+		x = aux_x / hsub;
+		y = aux_y / vsub;
+		aux_offset = intel_plane_adjust_aligned_offset(&x, &y,
+							       plane_state,
+							       ccs_plane,
+							       aux_offset,
+							       aux_offset -
+								alignment);
+		aux_x = x * hsub + aux_x % hsub;
+		aux_y = y * vsub + aux_y % vsub;
+	}
+
+	if (aux_x != main_x || aux_y != main_y)
+		return false;
+
+	plane_state->view.color_plane[ccs_plane].offset = aux_offset;
+	plane_state->view.color_plane[ccs_plane].x = aux_x;
+	plane_state->view.color_plane[ccs_plane].y = aux_y;
+
+	return true;
+}
+
+
+int skl_calc_main_surface_offset(const struct intel_plane_state *plane_state,
+				 int *x, int *y, u32 *offset)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	const int aux_plane = skl_main_to_aux_plane(fb, 0);
+	const u32 aux_offset = plane_state->view.color_plane[aux_plane].offset;
+	const u32 alignment = intel_surf_alignment(fb, 0);
+	const int w = drm_rect_width(&plane_state->uapi.src) >> 16;
+
+	intel_add_fb_offsets(x, y, plane_state, 0);
+	*offset = intel_plane_compute_aligned_offset(x, y, plane_state, 0);
+	if (drm_WARN_ON(&dev_priv->drm, alignment && !is_power_of_2(alignment)))
+		return -EINVAL;
+
+	/*
+	 * AUX surface offset is specified as the distance from the
+	 * main surface offset, and it must be non-negative. Make
+	 * sure that is what we will get.
+	 */
+	if (aux_plane && *offset > aux_offset)
+		*offset = intel_plane_adjust_aligned_offset(x, y, plane_state, 0,
+							    *offset,
+							    aux_offset & ~(alignment - 1));
+
+	/*
+	 * When using an X-tiled surface, the plane blows up
+	 * if the x offset + width exceed the stride.
+	 *
+	 * TODO: linear and Y-tiled seem fine, Yf untested,
+	 */
+	if (fb->modifier == I915_FORMAT_MOD_X_TILED) {
+		int cpp = fb->format->cpp[0];
+
+		while ((*x + w) * cpp > plane_state->view.color_plane[0].mapping_stride) {
+			if (*offset == 0) {
+				drm_dbg_kms(&dev_priv->drm,
+					    "Unable to find suitable display surface offset due to X-tiling\n");
+				return -EINVAL;
+			}
+
+			*offset = intel_plane_adjust_aligned_offset(x, y, plane_state, 0,
+								    *offset,
+								    *offset - alignment);
+		}
+	}
+
+	return 0;
+}
+
+static int skl_check_main_surface(struct intel_plane_state *plane_state)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	const unsigned int rotation = plane_state->hw.rotation;
+	int x = plane_state->uapi.src.x1 >> 16;
+	int y = plane_state->uapi.src.y1 >> 16;
+	const int w = drm_rect_width(&plane_state->uapi.src) >> 16;
+	const int h = drm_rect_height(&plane_state->uapi.src) >> 16;
+	const int min_width = intel_plane_min_width(plane, fb, 0, rotation);
+	const int max_width = intel_plane_max_width(plane, fb, 0, rotation);
+	const int max_height = intel_plane_max_height(plane, fb, 0, rotation);
+	const int aux_plane = skl_main_to_aux_plane(fb, 0);
+	const u32 alignment = intel_surf_alignment(fb, 0);
+	u32 offset;
+	int ret;
+
+	if (w > max_width || w < min_width || h > max_height || h < 1) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "requested Y/RGB source size %dx%d outside limits (min: %dx1 max: %dx%d)\n",
+			    w, h, min_width, max_width, max_height);
+		return -EINVAL;
+	}
+
+	ret = skl_calc_main_surface_offset(plane_state, &x, &y, &offset);
+	if (ret)
+		return ret;
+
+	/*
+	 * CCS AUX surface doesn't have its own x/y offsets, we must make sure
+	 * they match with the main surface x/y offsets. On DG2
+	 * there's no aux plane on fb so skip this checking.
+	 */
+	if (intel_fb_is_ccs_modifier(fb->modifier) && aux_plane) {
+		while (!skl_check_main_ccs_coordinates(plane_state, x, y,
+						       offset, aux_plane)) {
+			if (offset == 0)
+				break;
+
+			offset = intel_plane_adjust_aligned_offset(&x, &y, plane_state, 0,
+								   offset, offset - alignment);
+		}
+
+		if (x != plane_state->view.color_plane[aux_plane].x ||
+		    y != plane_state->view.color_plane[aux_plane].y) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "Unable to find suitable display surface offset due to CCS\n");
+			return -EINVAL;
+		}
+	}
+
+	if (DISPLAY_VER(dev_priv) >= 13)
+		drm_WARN_ON(&dev_priv->drm, x > 65535 || y > 65535);
+	else
+		drm_WARN_ON(&dev_priv->drm, x > 8191 || y > 8191);
+
+	plane_state->view.color_plane[0].offset = offset;
+	plane_state->view.color_plane[0].x = x;
+	plane_state->view.color_plane[0].y = y;
+
+	/*
+	 * Put the final coordinates back so that the src
+	 * coordinate checks will see the right values.
+	 */
+	drm_rect_translate_to(&plane_state->uapi.src,
+			      x << 16, y << 16);
+
+	return 0;
+}
+
+static int skl_check_nv12_aux_surface(struct intel_plane_state *plane_state)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	struct drm_i915_private *i915 = to_i915(plane->base.dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	unsigned int rotation = plane_state->hw.rotation;
+	int uv_plane = 1;
+	int ccs_plane = intel_fb_is_ccs_modifier(fb->modifier) ?
+			skl_main_to_aux_plane(fb, uv_plane) : 0;
+	int max_width = intel_plane_max_width(plane, fb, uv_plane, rotation);
+	int max_height = intel_plane_max_height(plane, fb, uv_plane, rotation);
+	int x = plane_state->uapi.src.x1 >> 17;
+	int y = plane_state->uapi.src.y1 >> 17;
+	int w = drm_rect_width(&plane_state->uapi.src) >> 17;
+	int h = drm_rect_height(&plane_state->uapi.src) >> 17;
+	u32 offset;
+
+	/* FIXME not quite sure how/if these apply to the chroma plane */
+	if (w > max_width || h > max_height) {
+		drm_dbg_kms(&i915->drm,
+			    "CbCr source size %dx%d too big (limit %dx%d)\n",
+			    w, h, max_width, max_height);
+		return -EINVAL;
+	}
+
+	intel_add_fb_offsets(&x, &y, plane_state, uv_plane);
+	offset = intel_plane_compute_aligned_offset(&x, &y,
+						    plane_state, uv_plane);
+
+	if (ccs_plane) {
+		u32 aux_offset = plane_state->view.color_plane[ccs_plane].offset;
+		u32 alignment = intel_surf_alignment(fb, uv_plane);
+
+		if (offset > aux_offset)
+			offset = intel_plane_adjust_aligned_offset(&x, &y,
+								   plane_state,
+								   uv_plane,
+								   offset,
+								   aux_offset & ~(alignment - 1));
+
+		while (!skl_check_main_ccs_coordinates(plane_state, x, y,
+						       offset, ccs_plane)) {
+			if (offset == 0)
+				break;
+
+			offset = intel_plane_adjust_aligned_offset(&x, &y,
+								   plane_state,
+								   uv_plane,
+								   offset, offset - alignment);
+		}
+
+		if (x != plane_state->view.color_plane[ccs_plane].x ||
+		    y != plane_state->view.color_plane[ccs_plane].y) {
+			drm_dbg_kms(&i915->drm,
+				    "Unable to find suitable display surface offset due to CCS\n");
+			return -EINVAL;
+		}
+	}
+
+	if (DISPLAY_VER(i915) >= 13)
+		drm_WARN_ON(&i915->drm, x > 65535 || y > 65535);
+	else
+		drm_WARN_ON(&i915->drm, x > 8191 || y > 8191);
+
+	plane_state->view.color_plane[uv_plane].offset = offset;
+	plane_state->view.color_plane[uv_plane].x = x;
+	plane_state->view.color_plane[uv_plane].y = y;
+
+	return 0;
+}
+
+static int skl_check_ccs_aux_surface(struct intel_plane_state *plane_state)
+{
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	int src_x = plane_state->uapi.src.x1 >> 16;
+	int src_y = plane_state->uapi.src.y1 >> 16;
+	u32 offset;
+	int ccs_plane;
+
+	for (ccs_plane = 0; ccs_plane < fb->format->num_planes; ccs_plane++) {
+		int main_hsub, main_vsub;
+		int hsub, vsub;
+		int x, y;
+
+		if (!intel_fb_is_ccs_aux_plane(fb, ccs_plane))
+			continue;
+
+		intel_fb_plane_get_subsampling(&main_hsub, &main_vsub, fb,
+					       skl_ccs_to_main_plane(fb, ccs_plane));
+		intel_fb_plane_get_subsampling(&hsub, &vsub, fb, ccs_plane);
+
+		hsub *= main_hsub;
+		vsub *= main_vsub;
+		x = src_x / hsub;
+		y = src_y / vsub;
+
+		intel_add_fb_offsets(&x, &y, plane_state, ccs_plane);
+
+		offset = intel_plane_compute_aligned_offset(&x, &y,
+							    plane_state,
+							    ccs_plane);
+
+		plane_state->view.color_plane[ccs_plane].offset = offset;
+		plane_state->view.color_plane[ccs_plane].x = (x * hsub + src_x % hsub) / main_hsub;
+		plane_state->view.color_plane[ccs_plane].y = (y * vsub + src_y % vsub) / main_vsub;
+	}
+
+	return 0;
+}
+
+static int skl_check_plane_surface(struct intel_plane_state *plane_state)
+{
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	int ret;
+
+	ret = intel_plane_compute_gtt(plane_state);
+	if (ret)
+		return ret;
+
+	if (!plane_state->uapi.visible)
+		return 0;
+
+	/*
+	 * Handle the AUX surface first since the main surface setup depends on
+	 * it.
+	 */
+	if (intel_fb_is_ccs_modifier(fb->modifier)) {
+		ret = skl_check_ccs_aux_surface(plane_state);
+		if (ret)
+			return ret;
+	}
+
+	if (intel_format_info_is_yuv_semiplanar(fb->format,
+						fb->modifier)) {
+		ret = skl_check_nv12_aux_surface(plane_state);
+		if (ret)
+			return ret;
+	}
+
+	ret = skl_check_main_surface(plane_state);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static bool skl_fb_scalable(const struct drm_framebuffer *fb)
+{
+	if (!fb)
+		return false;
+
+	switch (fb->format->format) {
+	case DRM_FORMAT_C8:
+		return false;
+	case DRM_FORMAT_XRGB16161616F:
+	case DRM_FORMAT_ARGB16161616F:
+	case DRM_FORMAT_XBGR16161616F:
+	case DRM_FORMAT_ABGR16161616F:
+		return DISPLAY_VER(to_i915(fb->dev)) >= 11;
+	default:
+		return true;
+	}
+}
+
+static bool bo_has_valid_encryption(struct drm_i915_gem_object *obj)
+{
+	struct drm_i915_private *i915 = to_i915(obj->base.dev);
+
+	return intel_pxp_key_check(&to_gt(i915)->pxp, obj, false) == 0;
+}
+
+static bool pxp_is_borked(struct drm_i915_gem_object *obj)
+{
+	return i915_gem_object_is_protected(obj) && !bo_has_valid_encryption(obj);
+}
+
+static int skl_plane_check(struct intel_crtc_state *crtc_state,
+			   struct intel_plane_state *plane_state)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	int min_scale = DRM_PLANE_NO_SCALING;
+	int max_scale = DRM_PLANE_NO_SCALING;
+	int ret;
+
+	ret = skl_plane_check_fb(crtc_state, plane_state);
+	if (ret)
+		return ret;
+
+	/* use scaler when colorkey is not required */
+	if (!plane_state->ckey.flags && skl_fb_scalable(fb)) {
+		min_scale = 1;
+		max_scale = skl_plane_max_scale(dev_priv, fb);
+	}
+
+	ret = intel_atomic_plane_check_clipping(plane_state, crtc_state,
+						min_scale, max_scale, true);
+	if (ret)
+		return ret;
+
+	ret = skl_check_plane_surface(plane_state);
+	if (ret)
+		return ret;
+
+	if (!plane_state->uapi.visible)
+		return 0;
+
+	ret = skl_plane_check_dst_coordinates(crtc_state, plane_state);
+	if (ret)
+		return ret;
+
+	ret = intel_plane_check_src_coordinates(plane_state);
+	if (ret)
+		return ret;
+
+	ret = skl_plane_check_nv12_rotation(plane_state);
+	if (ret)
+		return ret;
+
+	if (DISPLAY_VER(dev_priv) >= 11) {
+		plane_state->decrypt = bo_has_valid_encryption(intel_fb_obj(fb));
+		plane_state->force_black = pxp_is_borked(intel_fb_obj(fb));
+	}
+
+	/* HW only has 8 bits pixel precision, disable plane if invisible */
+	if (!(plane_state->hw.alpha >> 8))
+		plane_state->uapi.visible = false;
+
+	plane_state->ctl = skl_plane_ctl(crtc_state, plane_state);
+
+	if (DISPLAY_VER(dev_priv) >= 10)
+		plane_state->color_ctl = glk_plane_color_ctl(crtc_state,
+							     plane_state);
+
+	if (intel_format_info_is_yuv_semiplanar(fb->format, fb->modifier) &&
+	    icl_is_hdr_plane(dev_priv, plane->id))
+		/* Enable and use MPEG-2 chroma siting */
+		plane_state->cus_ctl = PLANE_CUS_ENABLE |
+			PLANE_CUS_HPHASE_0 |
+			PLANE_CUS_VPHASE_SIGN_NEGATIVE | PLANE_CUS_VPHASE_0_25;
+	else
+		plane_state->cus_ctl = 0;
+
+	return 0;
+}
+
+static enum intel_fbc_id skl_fbc_id_for_pipe(enum pipe pipe)
+{
+	return pipe - PIPE_A + INTEL_FBC_A;
+}
+
+static bool skl_plane_has_fbc(struct drm_i915_private *dev_priv,
+			      enum intel_fbc_id fbc_id, enum plane_id plane_id)
+{
+	if ((RUNTIME_INFO(dev_priv)->fbc_mask & BIT(fbc_id)) == 0)
+		return false;
+
+	return plane_id == PLANE_PRIMARY;
+}
+
+static struct intel_fbc *skl_plane_fbc(struct drm_i915_private *dev_priv,
+				       enum pipe pipe, enum plane_id plane_id)
+{
+	enum intel_fbc_id fbc_id = skl_fbc_id_for_pipe(pipe);
+
+	if (skl_plane_has_fbc(dev_priv, fbc_id, plane_id))
+		return dev_priv->display.fbc[fbc_id];
+	else
+		return NULL;
+}
+
+static bool skl_plane_has_planar(struct drm_i915_private *dev_priv,
+				 enum pipe pipe, enum plane_id plane_id)
+{
+	/* Display WA #0870: skl, bxt */
+	if (IS_SKYLAKE(dev_priv) || IS_BROXTON(dev_priv))
+		return false;
+
+	if (DISPLAY_VER(dev_priv) == 9 && pipe == PIPE_C)
+		return false;
+
+	if (plane_id != PLANE_PRIMARY && plane_id != PLANE_SPRITE0)
+		return false;
+
+	return true;
+}
+
+static const u32 *skl_get_plane_formats(struct drm_i915_private *dev_priv,
+					enum pipe pipe, enum plane_id plane_id,
+					int *num_formats)
+{
+	if (skl_plane_has_planar(dev_priv, pipe, plane_id)) {
+		*num_formats = ARRAY_SIZE(skl_planar_formats);
+		return skl_planar_formats;
+	} else {
+		*num_formats = ARRAY_SIZE(skl_plane_formats);
+		return skl_plane_formats;
+	}
+}
+
+static const u32 *glk_get_plane_formats(struct drm_i915_private *dev_priv,
+					enum pipe pipe, enum plane_id plane_id,
+					int *num_formats)
+{
+	if (skl_plane_has_planar(dev_priv, pipe, plane_id)) {
+		*num_formats = ARRAY_SIZE(glk_planar_formats);
+		return glk_planar_formats;
+	} else {
+		*num_formats = ARRAY_SIZE(skl_plane_formats);
+		return skl_plane_formats;
+	}
+}
+
+static const u32 *icl_get_plane_formats(struct drm_i915_private *dev_priv,
+					enum pipe pipe, enum plane_id plane_id,
+					int *num_formats)
+{
+	if (icl_is_hdr_plane(dev_priv, plane_id)) {
+		*num_formats = ARRAY_SIZE(icl_hdr_plane_formats);
+		return icl_hdr_plane_formats;
+	} else if (icl_is_nv12_y_plane(dev_priv, plane_id)) {
+		*num_formats = ARRAY_SIZE(icl_sdr_y_plane_formats);
+		return icl_sdr_y_plane_formats;
+	} else {
+		*num_formats = ARRAY_SIZE(icl_sdr_uv_plane_formats);
+		return icl_sdr_uv_plane_formats;
+	}
+}
+
+static bool skl_plane_format_mod_supported(struct drm_plane *_plane,
+					   u32 format, u64 modifier)
+{
+	struct intel_plane *plane = to_intel_plane(_plane);
+
+	if (!intel_fb_plane_supports_modifier(plane, modifier))
+		return false;
+
+	switch (format) {
+	case DRM_FORMAT_XRGB8888:
+	case DRM_FORMAT_XBGR8888:
+	case DRM_FORMAT_ARGB8888:
+	case DRM_FORMAT_ABGR8888:
+		if (intel_fb_is_ccs_modifier(modifier))
+			return true;
+		fallthrough;
+	case DRM_FORMAT_RGB565:
+	case DRM_FORMAT_XRGB2101010:
+	case DRM_FORMAT_XBGR2101010:
+	case DRM_FORMAT_ARGB2101010:
+	case DRM_FORMAT_ABGR2101010:
+	case DRM_FORMAT_YUYV:
+	case DRM_FORMAT_YVYU:
+	case DRM_FORMAT_UYVY:
+	case DRM_FORMAT_VYUY:
+	case DRM_FORMAT_NV12:
+	case DRM_FORMAT_XYUV8888:
+	case DRM_FORMAT_P010:
+	case DRM_FORMAT_P012:
+	case DRM_FORMAT_P016:
+	case DRM_FORMAT_XVYU2101010:
+		if (modifier == I915_FORMAT_MOD_Yf_TILED)
+			return true;
+		fallthrough;
+	case DRM_FORMAT_C8:
+	case DRM_FORMAT_XBGR16161616F:
+	case DRM_FORMAT_ABGR16161616F:
+	case DRM_FORMAT_XRGB16161616F:
+	case DRM_FORMAT_ARGB16161616F:
+	case DRM_FORMAT_Y210:
+	case DRM_FORMAT_Y212:
+	case DRM_FORMAT_Y216:
+	case DRM_FORMAT_XVYU12_16161616:
+	case DRM_FORMAT_XVYU16161616:
+		if (modifier == DRM_FORMAT_MOD_LINEAR ||
+		    modifier == I915_FORMAT_MOD_X_TILED ||
+		    modifier == I915_FORMAT_MOD_Y_TILED)
+			return true;
+		fallthrough;
+	default:
+		return false;
+	}
+}
+
+static bool gen12_plane_format_mod_supported(struct drm_plane *_plane,
+					     u32 format, u64 modifier)
+{
+	struct intel_plane *plane = to_intel_plane(_plane);
+
+	if (!intel_fb_plane_supports_modifier(plane, modifier))
+		return false;
+
+	switch (format) {
+	case DRM_FORMAT_XRGB8888:
+	case DRM_FORMAT_XBGR8888:
+	case DRM_FORMAT_ARGB8888:
+	case DRM_FORMAT_ABGR8888:
+		if (intel_fb_is_ccs_modifier(modifier))
+			return true;
+		fallthrough;
+	case DRM_FORMAT_YUYV:
+	case DRM_FORMAT_YVYU:
+	case DRM_FORMAT_UYVY:
+	case DRM_FORMAT_VYUY:
+	case DRM_FORMAT_NV12:
+	case DRM_FORMAT_XYUV8888:
+	case DRM_FORMAT_P010:
+	case DRM_FORMAT_P012:
+	case DRM_FORMAT_P016:
+		if (intel_fb_is_mc_ccs_modifier(modifier))
+			return true;
+		fallthrough;
+	case DRM_FORMAT_RGB565:
+	case DRM_FORMAT_XRGB2101010:
+	case DRM_FORMAT_XBGR2101010:
+	case DRM_FORMAT_ARGB2101010:
+	case DRM_FORMAT_ABGR2101010:
+	case DRM_FORMAT_XVYU2101010:
+	case DRM_FORMAT_C8:
+	case DRM_FORMAT_XBGR16161616F:
+	case DRM_FORMAT_ABGR16161616F:
+	case DRM_FORMAT_XRGB16161616F:
+	case DRM_FORMAT_ARGB16161616F:
+	case DRM_FORMAT_Y210:
+	case DRM_FORMAT_Y212:
+	case DRM_FORMAT_Y216:
+	case DRM_FORMAT_XVYU12_16161616:
+	case DRM_FORMAT_XVYU16161616:
+		if (!intel_fb_is_ccs_modifier(modifier))
+			return true;
+		fallthrough;
+	default:
+		return false;
+	}
+}
+
+static const struct drm_plane_funcs skl_plane_funcs = {
+	.update_plane = drm_atomic_helper_update_plane,
+	.disable_plane = drm_atomic_helper_disable_plane,
+	.destroy = intel_plane_destroy,
+	.atomic_duplicate_state = intel_plane_duplicate_state,
+	.atomic_destroy_state = intel_plane_destroy_state,
+	.format_mod_supported = skl_plane_format_mod_supported,
+};
+
+static const struct drm_plane_funcs gen12_plane_funcs = {
+	.update_plane = drm_atomic_helper_update_plane,
+	.disable_plane = drm_atomic_helper_disable_plane,
+	.destroy = intel_plane_destroy,
+	.atomic_duplicate_state = intel_plane_duplicate_state,
+	.atomic_destroy_state = intel_plane_destroy_state,
+	.format_mod_supported = gen12_plane_format_mod_supported,
+};
+
+static void
+skl_plane_enable_flip_done(struct intel_plane *plane)
+{
+	struct drm_i915_private *i915 = to_i915(plane->base.dev);
+	enum pipe pipe = plane->pipe;
+
+	spin_lock_irq(&i915->irq_lock);
+	bdw_enable_pipe_irq(i915, pipe, GEN9_PIPE_PLANE_FLIP_DONE(plane->id));
+	spin_unlock_irq(&i915->irq_lock);
+}
+
+static void
+skl_plane_disable_flip_done(struct intel_plane *plane)
+{
+	struct drm_i915_private *i915 = to_i915(plane->base.dev);
+	enum pipe pipe = plane->pipe;
+
+	spin_lock_irq(&i915->irq_lock);
+	bdw_disable_pipe_irq(i915, pipe, GEN9_PIPE_PLANE_FLIP_DONE(plane->id));
+	spin_unlock_irq(&i915->irq_lock);
+}
+
+static bool skl_plane_has_rc_ccs(struct drm_i915_private *i915,
+				 enum pipe pipe, enum plane_id plane_id)
+{
+	/* Wa_22011186057 */
+	if (IS_ADLP_DISPLAY_STEP(i915, STEP_A0, STEP_B0))
+		return false;
+
+	if (DISPLAY_VER(i915) >= 11)
+		return true;
+
+	if (IS_GEMINILAKE(i915))
+		return pipe != PIPE_C;
+
+	return pipe != PIPE_C &&
+		(plane_id == PLANE_PRIMARY ||
+		 plane_id == PLANE_SPRITE0);
+}
+
+static bool gen12_plane_has_mc_ccs(struct drm_i915_private *i915,
+				   enum plane_id plane_id)
+{
+	if (DISPLAY_VER(i915) < 12)
+		return false;
+
+	/* Wa_14010477008:tgl[a0..c0],rkl[all],dg1[all] */
+	if (IS_DG1(i915) || IS_ROCKETLAKE(i915) ||
+	    IS_TGL_DISPLAY_STEP(i915, STEP_A0, STEP_D0))
+		return false;
+
+	/* Wa_22011186057 */
+	if (IS_ADLP_DISPLAY_STEP(i915, STEP_A0, STEP_B0))
+		return false;
+
+	/* Wa_14013215631 */
+	if (IS_DG2_DISPLAY_STEP(i915, STEP_A0, STEP_C0))
+		return false;
+
+	return plane_id < PLANE_SPRITE4;
+}
+
+static u8 skl_get_plane_caps(struct drm_i915_private *i915,
+			     enum pipe pipe, enum plane_id plane_id)
+{
+	u8 caps = INTEL_PLANE_CAP_TILING_X;
+
+	if (DISPLAY_VER(i915) < 13 || IS_ALDERLAKE_P(i915))
+		caps |= INTEL_PLANE_CAP_TILING_Y;
+	if (DISPLAY_VER(i915) < 12)
+		caps |= INTEL_PLANE_CAP_TILING_Yf;
+	if (HAS_4TILE(i915))
+		caps |= INTEL_PLANE_CAP_TILING_4;
+
+	if (skl_plane_has_rc_ccs(i915, pipe, plane_id)) {
+		caps |= INTEL_PLANE_CAP_CCS_RC;
+		if (DISPLAY_VER(i915) >= 12)
+			caps |= INTEL_PLANE_CAP_CCS_RC_CC;
+	}
+
+	if (gen12_plane_has_mc_ccs(i915, plane_id))
+		caps |= INTEL_PLANE_CAP_CCS_MC;
+
+	return caps;
+}
+
+struct intel_plane *
+skl_universal_plane_create(struct drm_i915_private *dev_priv,
+			   enum pipe pipe, enum plane_id plane_id)
+{
+	const struct drm_plane_funcs *plane_funcs;
+	struct intel_plane *plane;
+	enum drm_plane_type plane_type;
+	unsigned int supported_rotations;
+	unsigned int supported_csc;
+	const u64 *modifiers;
+	const u32 *formats;
+	int num_formats;
+	int ret;
+
+	plane = intel_plane_alloc();
+	if (IS_ERR(plane))
+		return plane;
+
+	plane->pipe = pipe;
+	plane->id = plane_id;
+	plane->frontbuffer_bit = INTEL_FRONTBUFFER(pipe, plane_id);
+
+	intel_fbc_add_plane(skl_plane_fbc(dev_priv, pipe, plane_id), plane);
+
+	if (DISPLAY_VER(dev_priv) >= 11) {
+		plane->min_width = icl_plane_min_width;
+		if (icl_is_hdr_plane(dev_priv, plane_id))
+			plane->max_width = icl_hdr_plane_max_width;
+		else
+			plane->max_width = icl_sdr_plane_max_width;
+		plane->max_height = icl_plane_max_height;
+		plane->min_cdclk = icl_plane_min_cdclk;
+	} else if (DISPLAY_VER(dev_priv) >= 10) {
+		plane->max_width = glk_plane_max_width;
+		plane->max_height = skl_plane_max_height;
+		plane->min_cdclk = glk_plane_min_cdclk;
+	} else {
+		plane->max_width = skl_plane_max_width;
+		plane->max_height = skl_plane_max_height;
+		plane->min_cdclk = skl_plane_min_cdclk;
+	}
+
+	plane->max_stride = skl_plane_max_stride;
+	if (DISPLAY_VER(dev_priv) >= 11) {
+		plane->update_noarm = icl_plane_update_noarm;
+		plane->update_arm = icl_plane_update_arm;
+		plane->disable_arm = icl_plane_disable_arm;
+	} else {
+		plane->update_noarm = skl_plane_update_noarm;
+		plane->update_arm = skl_plane_update_arm;
+		plane->disable_arm = skl_plane_disable_arm;
+	}
+	plane->get_hw_state = skl_plane_get_hw_state;
+	plane->check_plane = skl_plane_check;
+
+	if (plane_id == PLANE_PRIMARY) {
+		plane->need_async_flip_disable_wa = IS_DISPLAY_VER(dev_priv,
+								   9, 10);
+		plane->async_flip = skl_plane_async_flip;
+		plane->enable_flip_done = skl_plane_enable_flip_done;
+		plane->disable_flip_done = skl_plane_disable_flip_done;
+	}
+
+	if (DISPLAY_VER(dev_priv) >= 11)
+		formats = icl_get_plane_formats(dev_priv, pipe,
+						plane_id, &num_formats);
+	else if (DISPLAY_VER(dev_priv) >= 10)
+		formats = glk_get_plane_formats(dev_priv, pipe,
+						plane_id, &num_formats);
+	else
+		formats = skl_get_plane_formats(dev_priv, pipe,
+						plane_id, &num_formats);
+
+	if (DISPLAY_VER(dev_priv) >= 12)
+		plane_funcs = &gen12_plane_funcs;
+	else
+		plane_funcs = &skl_plane_funcs;
+
+	if (plane_id == PLANE_PRIMARY)
+		plane_type = DRM_PLANE_TYPE_PRIMARY;
+	else
+		plane_type = DRM_PLANE_TYPE_OVERLAY;
+
+	modifiers = intel_fb_plane_get_modifiers(dev_priv,
+						 skl_get_plane_caps(dev_priv, pipe, plane_id));
+
+	ret = drm_universal_plane_init(&dev_priv->drm, &plane->base,
+				       0, plane_funcs,
+				       formats, num_formats, modifiers,
+				       plane_type,
+				       "plane %d%c", plane_id + 1,
+				       pipe_name(pipe));
+
+	kfree(modifiers);
+
+	if (ret)
+		goto fail;
+
+	if (DISPLAY_VER(dev_priv) >= 13)
+		supported_rotations = DRM_MODE_ROTATE_0 | DRM_MODE_ROTATE_180;
+	else
+		supported_rotations =
+			DRM_MODE_ROTATE_0 | DRM_MODE_ROTATE_90 |
+			DRM_MODE_ROTATE_180 | DRM_MODE_ROTATE_270;
+
+	if (DISPLAY_VER(dev_priv) >= 11)
+		supported_rotations |= DRM_MODE_REFLECT_X;
+
+	drm_plane_create_rotation_property(&plane->base,
+					   DRM_MODE_ROTATE_0,
+					   supported_rotations);
+
+	supported_csc = BIT(DRM_COLOR_YCBCR_BT601) | BIT(DRM_COLOR_YCBCR_BT709);
+
+	if (DISPLAY_VER(dev_priv) >= 10)
+		supported_csc |= BIT(DRM_COLOR_YCBCR_BT2020);
+
+	drm_plane_create_color_properties(&plane->base,
+					  supported_csc,
+					  BIT(DRM_COLOR_YCBCR_LIMITED_RANGE) |
+					  BIT(DRM_COLOR_YCBCR_FULL_RANGE),
+					  DRM_COLOR_YCBCR_BT709,
+					  DRM_COLOR_YCBCR_LIMITED_RANGE);
+
+	drm_plane_create_alpha_property(&plane->base);
+	drm_plane_create_blend_mode_property(&plane->base,
+					     BIT(DRM_MODE_BLEND_PIXEL_NONE) |
+					     BIT(DRM_MODE_BLEND_PREMULTI) |
+					     BIT(DRM_MODE_BLEND_COVERAGE));
+
+	drm_plane_create_zpos_immutable_property(&plane->base, plane_id);
+
+	if (DISPLAY_VER(dev_priv) >= 12)
+		drm_plane_enable_fb_damage_clips(&plane->base);
+
+	if (DISPLAY_VER(dev_priv) >= 11)
+		drm_plane_create_scaling_filter_property(&plane->base,
+						BIT(DRM_SCALING_FILTER_DEFAULT) |
+						BIT(DRM_SCALING_FILTER_NEAREST_NEIGHBOR));
+
+	intel_plane_helper_add(plane);
+
+	return plane;
+
+fail:
+	intel_plane_free(plane);
+
+	return ERR_PTR(ret);
+}
+
+void
+skl_get_initial_plane_config(struct intel_crtc *crtc,
+			     struct intel_initial_plane_config *plane_config)
+{
+	struct intel_crtc_state *crtc_state = to_intel_crtc_state(crtc->base.state);
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_plane *plane = to_intel_plane(crtc->base.primary);
+	enum plane_id plane_id = plane->id;
+	enum pipe pipe;
+	u32 val, base, offset, stride_mult, tiling, alpha;
+	int fourcc, pixel_format;
+	unsigned int aligned_height;
+	struct drm_framebuffer *fb;
+	struct intel_framebuffer *intel_fb;
+	static_assert(PLANE_CTL_TILED_YF == PLANE_CTL_TILED_4);
+
+	if (!plane->get_hw_state(plane, &pipe))
+		return;
+
+	drm_WARN_ON(dev, pipe != crtc->pipe);
+
+	if (crtc_state->bigjoiner_pipes) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Unsupported bigjoiner configuration for initial FB\n");
+		return;
+	}
+
+	intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
+	if (!intel_fb) {
+		drm_dbg_kms(&dev_priv->drm, "failed to alloc fb\n");
+		return;
+	}
+
+	fb = &intel_fb->base;
+
+	fb->dev = dev;
+
+	val = intel_de_read(dev_priv, PLANE_CTL(pipe, plane_id));
+
+	if (DISPLAY_VER(dev_priv) >= 11)
+		pixel_format = val & PLANE_CTL_FORMAT_MASK_ICL;
+	else
+		pixel_format = val & PLANE_CTL_FORMAT_MASK_SKL;
+
+	if (DISPLAY_VER(dev_priv) >= 10) {
+		u32 color_ctl;
+
+		color_ctl = intel_de_read(dev_priv, PLANE_COLOR_CTL(pipe, plane_id));
+		alpha = REG_FIELD_GET(PLANE_COLOR_ALPHA_MASK, color_ctl);
+	} else {
+		alpha = REG_FIELD_GET(PLANE_CTL_ALPHA_MASK, val);
+	}
+
+	fourcc = skl_format_to_fourcc(pixel_format,
+				      val & PLANE_CTL_ORDER_RGBX, alpha);
+	fb->format = drm_format_info(fourcc);
+
+	tiling = val & PLANE_CTL_TILED_MASK;
+	switch (tiling) {
+	case PLANE_CTL_TILED_LINEAR:
+		fb->modifier = DRM_FORMAT_MOD_LINEAR;
+		break;
+	case PLANE_CTL_TILED_X:
+		plane_config->tiling = I915_TILING_X;
+		fb->modifier = I915_FORMAT_MOD_X_TILED;
+		break;
+	case PLANE_CTL_TILED_Y:
+		plane_config->tiling = I915_TILING_Y;
+		if (val & PLANE_CTL_RENDER_DECOMPRESSION_ENABLE)
+			if (DISPLAY_VER(dev_priv) >= 12)
+				fb->modifier = I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS;
+			else
+				fb->modifier = I915_FORMAT_MOD_Y_TILED_CCS;
+		else if (val & PLANE_CTL_MEDIA_DECOMPRESSION_ENABLE)
+			fb->modifier = I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS;
+		else
+			fb->modifier = I915_FORMAT_MOD_Y_TILED;
+		break;
+	case PLANE_CTL_TILED_YF: /* aka PLANE_CTL_TILED_4 on XE_LPD+ */
+		if (HAS_4TILE(dev_priv)) {
+			u32 rc_mask = PLANE_CTL_RENDER_DECOMPRESSION_ENABLE |
+				      PLANE_CTL_CLEAR_COLOR_DISABLE;
+
+			if ((val & rc_mask) == rc_mask)
+				fb->modifier = I915_FORMAT_MOD_4_TILED_DG2_RC_CCS;
+			else if (val & PLANE_CTL_MEDIA_DECOMPRESSION_ENABLE)
+				fb->modifier = I915_FORMAT_MOD_4_TILED_DG2_MC_CCS;
+			else if (val & PLANE_CTL_RENDER_DECOMPRESSION_ENABLE)
+				fb->modifier = I915_FORMAT_MOD_4_TILED_DG2_RC_CCS_CC;
+			else
+				fb->modifier = I915_FORMAT_MOD_4_TILED;
+		} else {
+			if (val & PLANE_CTL_RENDER_DECOMPRESSION_ENABLE)
+				fb->modifier = I915_FORMAT_MOD_Yf_TILED_CCS;
+			else
+				fb->modifier = I915_FORMAT_MOD_Yf_TILED;
+		}
+		break;
+	default:
+		MISSING_CASE(tiling);
+		goto error;
+	}
+
+	/*
+	 * DRM_MODE_ROTATE_ is counter clockwise to stay compatible with Xrandr
+	 * while i915 HW rotation is clockwise, thats why this swapping.
+	 */
+	switch (val & PLANE_CTL_ROTATE_MASK) {
+	case PLANE_CTL_ROTATE_0:
+		plane_config->rotation = DRM_MODE_ROTATE_0;
+		break;
+	case PLANE_CTL_ROTATE_90:
+		plane_config->rotation = DRM_MODE_ROTATE_270;
+		break;
+	case PLANE_CTL_ROTATE_180:
+		plane_config->rotation = DRM_MODE_ROTATE_180;
+		break;
+	case PLANE_CTL_ROTATE_270:
+		plane_config->rotation = DRM_MODE_ROTATE_90;
+		break;
+	}
+
+	if (DISPLAY_VER(dev_priv) >= 11 && val & PLANE_CTL_FLIP_HORIZONTAL)
+		plane_config->rotation |= DRM_MODE_REFLECT_X;
+
+	/* 90/270 degree rotation would require extra work */
+	if (drm_rotation_90_or_270(plane_config->rotation))
+		goto error;
+
+	base = intel_de_read(dev_priv, PLANE_SURF(pipe, plane_id)) & PLANE_SURF_ADDR_MASK;
+	plane_config->base = base;
+
+	offset = intel_de_read(dev_priv, PLANE_OFFSET(pipe, plane_id));
+
+	val = intel_de_read(dev_priv, PLANE_SIZE(pipe, plane_id));
+	fb->height = REG_FIELD_GET(PLANE_HEIGHT_MASK, val) + 1;
+	fb->width = REG_FIELD_GET(PLANE_WIDTH_MASK, val) + 1;
+
+	val = intel_de_read(dev_priv, PLANE_STRIDE(pipe, plane_id));
+	stride_mult = skl_plane_stride_mult(fb, 0, DRM_MODE_ROTATE_0);
+
+	fb->pitches[0] = REG_FIELD_GET(PLANE_STRIDE__MASK, val) * stride_mult;
+
+	aligned_height = intel_fb_align_height(fb, 0, fb->height);
+
+	plane_config->size = fb->pitches[0] * aligned_height;
+
+	drm_dbg_kms(&dev_priv->drm,
+		    "%s/%s with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n",
+		    crtc->base.name, plane->base.name, fb->width, fb->height,
+		    fb->format->cpp[0] * 8, base, fb->pitches[0],
+		    plane_config->size);
+
+	plane_config->fb = intel_fb;
+	return;
+
+error:
+	kfree(intel_fb);
+}
diff --git a/drivers/gpu/drm/i915/display/skl_universal_plane.h b/drivers/gpu/drm/i915/display/skl_universal_plane.h
new file mode 100644
index 000000000..351040b64
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/skl_universal_plane.h
@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#ifndef _SKL_UNIVERSAL_PLANE_H_
+#define _SKL_UNIVERSAL_PLANE_H_
+
+#include <linux/types.h>
+
+struct drm_i915_private;
+struct intel_crtc;
+struct intel_initial_plane_config;
+struct intel_plane_state;
+
+enum pipe;
+enum plane_id;
+
+struct intel_plane *
+skl_universal_plane_create(struct drm_i915_private *dev_priv,
+			   enum pipe pipe, enum plane_id plane_id);
+
+void skl_get_initial_plane_config(struct intel_crtc *crtc,
+				  struct intel_initial_plane_config *plane_config);
+
+int skl_format_to_fourcc(int format, bool rgb_order, bool alpha);
+
+int skl_calc_main_surface_offset(const struct intel_plane_state *plane_state,
+				 int *x, int *y, u32 *offset);
+
+bool icl_is_nv12_y_plane(struct drm_i915_private *dev_priv,
+			 enum plane_id plane_id);
+bool icl_is_hdr_plane(struct drm_i915_private *dev_priv, enum plane_id plane_id);
+
+#endif
diff --git a/drivers/gpu/drm/i915/display/skl_watermark.c b/drivers/gpu/drm/i915/display/skl_watermark.c
new file mode 100644
index 000000000..a7adf0247
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/skl_watermark.c
@@ -0,0 +1,3575 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#include <drm/drm_blend.h>
+
+#include "intel_atomic.h"
+#include "intel_atomic_plane.h"
+#include "intel_bw.h"
+#include "intel_de.h"
+#include "intel_display.h"
+#include "intel_display_power.h"
+#include "intel_display_types.h"
+#include "intel_fb.h"
+#include "skl_watermark.h"
+
+#include "i915_drv.h"
+#include "i915_fixed.h"
+#include "i915_reg.h"
+#include "intel_pcode.h"
+#include "intel_pm.h"
+
+static void skl_sagv_disable(struct drm_i915_private *i915);
+
+/* Stores plane specific WM parameters */
+struct skl_wm_params {
+	bool x_tiled, y_tiled;
+	bool rc_surface;
+	bool is_planar;
+	u32 width;
+	u8 cpp;
+	u32 plane_pixel_rate;
+	u32 y_min_scanlines;
+	u32 plane_bytes_per_line;
+	uint_fixed_16_16_t plane_blocks_per_line;
+	uint_fixed_16_16_t y_tile_minimum;
+	u32 linetime_us;
+	u32 dbuf_block_size;
+};
+
+u8 intel_enabled_dbuf_slices_mask(struct drm_i915_private *i915)
+{
+	u8 enabled_slices = 0;
+	enum dbuf_slice slice;
+
+	for_each_dbuf_slice(i915, slice) {
+		if (intel_uncore_read(&i915->uncore,
+				      DBUF_CTL_S(slice)) & DBUF_POWER_STATE)
+			enabled_slices |= BIT(slice);
+	}
+
+	return enabled_slices;
+}
+
+/*
+ * FIXME: We still don't have the proper code detect if we need to apply the WA,
+ * so assume we'll always need it in order to avoid underruns.
+ */
+static bool skl_needs_memory_bw_wa(struct drm_i915_private *i915)
+{
+	return DISPLAY_VER(i915) == 9;
+}
+
+static bool
+intel_has_sagv(struct drm_i915_private *i915)
+{
+	return DISPLAY_VER(i915) >= 9 && !IS_LP(i915) &&
+		i915->display.sagv.status != I915_SAGV_NOT_CONTROLLED;
+}
+
+static u32
+intel_sagv_block_time(struct drm_i915_private *i915)
+{
+	if (DISPLAY_VER(i915) >= 14) {
+		u32 val;
+
+		val = intel_uncore_read(&i915->uncore, MTL_LATENCY_SAGV);
+
+		return REG_FIELD_GET(MTL_LATENCY_QCLK_SAGV, val);
+	} else if (DISPLAY_VER(i915) >= 12) {
+		u32 val = 0;
+		int ret;
+
+		ret = snb_pcode_read(&i915->uncore,
+				     GEN12_PCODE_READ_SAGV_BLOCK_TIME_US,
+				     &val, NULL);
+		if (ret) {
+			drm_dbg_kms(&i915->drm, "Couldn't read SAGV block time!\n");
+			return 0;
+		}
+
+		return val;
+	} else if (DISPLAY_VER(i915) == 11) {
+		return 10;
+	} else if (DISPLAY_VER(i915) == 9 && !IS_LP(i915)) {
+		return 30;
+	} else {
+		return 0;
+	}
+}
+
+static void intel_sagv_init(struct drm_i915_private *i915)
+{
+	if (!intel_has_sagv(i915))
+		i915->display.sagv.status = I915_SAGV_NOT_CONTROLLED;
+
+	/*
+	 * Probe to see if we have working SAGV control.
+	 * For icl+ this was already determined by intel_bw_init_hw().
+	 */
+	if (DISPLAY_VER(i915) < 11)
+		skl_sagv_disable(i915);
+
+	drm_WARN_ON(&i915->drm, i915->display.sagv.status == I915_SAGV_UNKNOWN);
+
+	i915->display.sagv.block_time_us = intel_sagv_block_time(i915);
+
+	drm_dbg_kms(&i915->drm, "SAGV supported: %s, original SAGV block time: %u us\n",
+		    str_yes_no(intel_has_sagv(i915)), i915->display.sagv.block_time_us);
+
+	/* avoid overflow when adding with wm0 latency/etc. */
+	if (drm_WARN(&i915->drm, i915->display.sagv.block_time_us > U16_MAX,
+		     "Excessive SAGV block time %u, ignoring\n",
+		     i915->display.sagv.block_time_us))
+		i915->display.sagv.block_time_us = 0;
+
+	if (!intel_has_sagv(i915))
+		i915->display.sagv.block_time_us = 0;
+}
+
+/*
+ * SAGV dynamically adjusts the system agent voltage and clock frequencies
+ * depending on power and performance requirements. The display engine access
+ * to system memory is blocked during the adjustment time. Because of the
+ * blocking time, having this enabled can cause full system hangs and/or pipe
+ * underruns if we don't meet all of the following requirements:
+ *
+ *  - <= 1 pipe enabled
+ *  - All planes can enable watermarks for latencies >= SAGV engine block time
+ *  - We're not using an interlaced display configuration
+ */
+static void skl_sagv_enable(struct drm_i915_private *i915)
+{
+	int ret;
+
+	if (!intel_has_sagv(i915))
+		return;
+
+	if (i915->display.sagv.status == I915_SAGV_ENABLED)
+		return;
+
+	drm_dbg_kms(&i915->drm, "Enabling SAGV\n");
+	ret = snb_pcode_write(&i915->uncore, GEN9_PCODE_SAGV_CONTROL,
+			      GEN9_SAGV_ENABLE);
+
+	/* We don't need to wait for SAGV when enabling */
+
+	/*
+	 * Some skl systems, pre-release machines in particular,
+	 * don't actually have SAGV.
+	 */
+	if (IS_SKYLAKE(i915) && ret == -ENXIO) {
+		drm_dbg(&i915->drm, "No SAGV found on system, ignoring\n");
+		i915->display.sagv.status = I915_SAGV_NOT_CONTROLLED;
+		return;
+	} else if (ret < 0) {
+		drm_err(&i915->drm, "Failed to enable SAGV\n");
+		return;
+	}
+
+	i915->display.sagv.status = I915_SAGV_ENABLED;
+}
+
+static void skl_sagv_disable(struct drm_i915_private *i915)
+{
+	int ret;
+
+	if (!intel_has_sagv(i915))
+		return;
+
+	if (i915->display.sagv.status == I915_SAGV_DISABLED)
+		return;
+
+	drm_dbg_kms(&i915->drm, "Disabling SAGV\n");
+	/* bspec says to keep retrying for at least 1 ms */
+	ret = skl_pcode_request(&i915->uncore, GEN9_PCODE_SAGV_CONTROL,
+				GEN9_SAGV_DISABLE,
+				GEN9_SAGV_IS_DISABLED, GEN9_SAGV_IS_DISABLED,
+				1);
+	/*
+	 * Some skl systems, pre-release machines in particular,
+	 * don't actually have SAGV.
+	 */
+	if (IS_SKYLAKE(i915) && ret == -ENXIO) {
+		drm_dbg(&i915->drm, "No SAGV found on system, ignoring\n");
+		i915->display.sagv.status = I915_SAGV_NOT_CONTROLLED;
+		return;
+	} else if (ret < 0) {
+		drm_err(&i915->drm, "Failed to disable SAGV (%d)\n", ret);
+		return;
+	}
+
+	i915->display.sagv.status = I915_SAGV_DISABLED;
+}
+
+static void skl_sagv_pre_plane_update(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_bw_state *new_bw_state =
+		intel_atomic_get_new_bw_state(state);
+
+	if (!new_bw_state)
+		return;
+
+	if (!intel_can_enable_sagv(i915, new_bw_state))
+		skl_sagv_disable(i915);
+}
+
+static void skl_sagv_post_plane_update(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_bw_state *new_bw_state =
+		intel_atomic_get_new_bw_state(state);
+
+	if (!new_bw_state)
+		return;
+
+	if (intel_can_enable_sagv(i915, new_bw_state))
+		skl_sagv_enable(i915);
+}
+
+static void icl_sagv_pre_plane_update(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_bw_state *old_bw_state =
+		intel_atomic_get_old_bw_state(state);
+	const struct intel_bw_state *new_bw_state =
+		intel_atomic_get_new_bw_state(state);
+	u16 old_mask, new_mask;
+
+	if (!new_bw_state)
+		return;
+
+	old_mask = old_bw_state->qgv_points_mask;
+	new_mask = old_bw_state->qgv_points_mask | new_bw_state->qgv_points_mask;
+
+	if (old_mask == new_mask)
+		return;
+
+	WARN_ON(!new_bw_state->base.changed);
+
+	drm_dbg_kms(&i915->drm, "Restricting QGV points: 0x%x -> 0x%x\n",
+		    old_mask, new_mask);
+
+	/*
+	 * Restrict required qgv points before updating the configuration.
+	 * According to BSpec we can't mask and unmask qgv points at the same
+	 * time. Also masking should be done before updating the configuration
+	 * and unmasking afterwards.
+	 */
+	icl_pcode_restrict_qgv_points(i915, new_mask);
+}
+
+static void icl_sagv_post_plane_update(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_bw_state *old_bw_state =
+		intel_atomic_get_old_bw_state(state);
+	const struct intel_bw_state *new_bw_state =
+		intel_atomic_get_new_bw_state(state);
+	u16 old_mask, new_mask;
+
+	if (!new_bw_state)
+		return;
+
+	old_mask = old_bw_state->qgv_points_mask | new_bw_state->qgv_points_mask;
+	new_mask = new_bw_state->qgv_points_mask;
+
+	if (old_mask == new_mask)
+		return;
+
+	WARN_ON(!new_bw_state->base.changed);
+
+	drm_dbg_kms(&i915->drm, "Relaxing QGV points: 0x%x -> 0x%x\n",
+		    old_mask, new_mask);
+
+	/*
+	 * Allow required qgv points after updating the configuration.
+	 * According to BSpec we can't mask and unmask qgv points at the same
+	 * time. Also masking should be done before updating the configuration
+	 * and unmasking afterwards.
+	 */
+	icl_pcode_restrict_qgv_points(i915, new_mask);
+}
+
+void intel_sagv_pre_plane_update(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+
+	/*
+	 * Just return if we can't control SAGV or don't have it.
+	 * This is different from situation when we have SAGV but just can't
+	 * afford it due to DBuf limitation - in case if SAGV is completely
+	 * disabled in a BIOS, we are not even allowed to send a PCode request,
+	 * as it will throw an error. So have to check it here.
+	 */
+	if (!intel_has_sagv(i915))
+		return;
+
+	if (DISPLAY_VER(i915) >= 11)
+		icl_sagv_pre_plane_update(state);
+	else
+		skl_sagv_pre_plane_update(state);
+}
+
+void intel_sagv_post_plane_update(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+
+	/*
+	 * Just return if we can't control SAGV or don't have it.
+	 * This is different from situation when we have SAGV but just can't
+	 * afford it due to DBuf limitation - in case if SAGV is completely
+	 * disabled in a BIOS, we are not even allowed to send a PCode request,
+	 * as it will throw an error. So have to check it here.
+	 */
+	if (!intel_has_sagv(i915))
+		return;
+
+	if (DISPLAY_VER(i915) >= 11)
+		icl_sagv_post_plane_update(state);
+	else
+		skl_sagv_post_plane_update(state);
+}
+
+static bool skl_crtc_can_enable_sagv(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	enum plane_id plane_id;
+	int max_level = INT_MAX;
+
+	if (!intel_has_sagv(i915))
+		return false;
+
+	if (!crtc_state->hw.active)
+		return true;
+
+	if (crtc_state->hw.pipe_mode.flags & DRM_MODE_FLAG_INTERLACE)
+		return false;
+
+	for_each_plane_id_on_crtc(crtc, plane_id) {
+		const struct skl_plane_wm *wm =
+			&crtc_state->wm.skl.optimal.planes[plane_id];
+		int level;
+
+		/* Skip this plane if it's not enabled */
+		if (!wm->wm[0].enable)
+			continue;
+
+		/* Find the highest enabled wm level for this plane */
+		for (level = ilk_wm_max_level(i915);
+		     !wm->wm[level].enable; --level)
+		     { }
+
+		/* Highest common enabled wm level for all planes */
+		max_level = min(level, max_level);
+	}
+
+	/* No enabled planes? */
+	if (max_level == INT_MAX)
+		return true;
+
+	for_each_plane_id_on_crtc(crtc, plane_id) {
+		const struct skl_plane_wm *wm =
+			&crtc_state->wm.skl.optimal.planes[plane_id];
+
+		/*
+		 * All enabled planes must have enabled a common wm level that
+		 * can tolerate memory latencies higher than sagv_block_time_us
+		 */
+		if (wm->wm[0].enable && !wm->wm[max_level].can_sagv)
+			return false;
+	}
+
+	return true;
+}
+
+static bool tgl_crtc_can_enable_sagv(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	enum plane_id plane_id;
+
+	if (!crtc_state->hw.active)
+		return true;
+
+	for_each_plane_id_on_crtc(crtc, plane_id) {
+		const struct skl_plane_wm *wm =
+			&crtc_state->wm.skl.optimal.planes[plane_id];
+
+		if (wm->wm[0].enable && !wm->sagv.wm0.enable)
+			return false;
+	}
+
+	return true;
+}
+
+static bool intel_crtc_can_enable_sagv(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+
+	if (DISPLAY_VER(i915) >= 12)
+		return tgl_crtc_can_enable_sagv(crtc_state);
+	else
+		return skl_crtc_can_enable_sagv(crtc_state);
+}
+
+bool intel_can_enable_sagv(struct drm_i915_private *i915,
+			   const struct intel_bw_state *bw_state)
+{
+	if (DISPLAY_VER(i915) < 11 &&
+	    bw_state->active_pipes && !is_power_of_2(bw_state->active_pipes))
+		return false;
+
+	return bw_state->pipe_sagv_reject == 0;
+}
+
+static int intel_compute_sagv_mask(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	int ret;
+	struct intel_crtc *crtc;
+	struct intel_crtc_state *new_crtc_state;
+	struct intel_bw_state *new_bw_state = NULL;
+	const struct intel_bw_state *old_bw_state = NULL;
+	int i;
+
+	for_each_new_intel_crtc_in_state(state, crtc,
+					 new_crtc_state, i) {
+		new_bw_state = intel_atomic_get_bw_state(state);
+		if (IS_ERR(new_bw_state))
+			return PTR_ERR(new_bw_state);
+
+		old_bw_state = intel_atomic_get_old_bw_state(state);
+
+		if (intel_crtc_can_enable_sagv(new_crtc_state))
+			new_bw_state->pipe_sagv_reject &= ~BIT(crtc->pipe);
+		else
+			new_bw_state->pipe_sagv_reject |= BIT(crtc->pipe);
+	}
+
+	if (!new_bw_state)
+		return 0;
+
+	new_bw_state->active_pipes =
+		intel_calc_active_pipes(state, old_bw_state->active_pipes);
+
+	if (new_bw_state->active_pipes != old_bw_state->active_pipes) {
+		ret = intel_atomic_lock_global_state(&new_bw_state->base);
+		if (ret)
+			return ret;
+	}
+
+	if (intel_can_enable_sagv(i915, new_bw_state) !=
+	    intel_can_enable_sagv(i915, old_bw_state)) {
+		ret = intel_atomic_serialize_global_state(&new_bw_state->base);
+		if (ret)
+			return ret;
+	} else if (new_bw_state->pipe_sagv_reject != old_bw_state->pipe_sagv_reject) {
+		ret = intel_atomic_lock_global_state(&new_bw_state->base);
+		if (ret)
+			return ret;
+	}
+
+	for_each_new_intel_crtc_in_state(state, crtc,
+					 new_crtc_state, i) {
+		struct skl_pipe_wm *pipe_wm = &new_crtc_state->wm.skl.optimal;
+
+		/*
+		 * We store use_sagv_wm in the crtc state rather than relying on
+		 * that bw state since we have no convenient way to get at the
+		 * latter from the plane commit hooks (especially in the legacy
+		 * cursor case)
+		 */
+		pipe_wm->use_sagv_wm = !HAS_HW_SAGV_WM(i915) &&
+			DISPLAY_VER(i915) >= 12 &&
+			intel_can_enable_sagv(i915, new_bw_state);
+	}
+
+	return 0;
+}
+
+static u16 skl_ddb_entry_init(struct skl_ddb_entry *entry,
+			      u16 start, u16 end)
+{
+	entry->start = start;
+	entry->end = end;
+
+	return end;
+}
+
+static int intel_dbuf_slice_size(struct drm_i915_private *i915)
+{
+	return INTEL_INFO(i915)->display.dbuf.size /
+		hweight8(INTEL_INFO(i915)->display.dbuf.slice_mask);
+}
+
+static void
+skl_ddb_entry_for_slices(struct drm_i915_private *i915, u8 slice_mask,
+			 struct skl_ddb_entry *ddb)
+{
+	int slice_size = intel_dbuf_slice_size(i915);
+
+	if (!slice_mask) {
+		ddb->start = 0;
+		ddb->end = 0;
+		return;
+	}
+
+	ddb->start = (ffs(slice_mask) - 1) * slice_size;
+	ddb->end = fls(slice_mask) * slice_size;
+
+	WARN_ON(ddb->start >= ddb->end);
+	WARN_ON(ddb->end > INTEL_INFO(i915)->display.dbuf.size);
+}
+
+static unsigned int mbus_ddb_offset(struct drm_i915_private *i915, u8 slice_mask)
+{
+	struct skl_ddb_entry ddb;
+
+	if (slice_mask & (BIT(DBUF_S1) | BIT(DBUF_S2)))
+		slice_mask = BIT(DBUF_S1);
+	else if (slice_mask & (BIT(DBUF_S3) | BIT(DBUF_S4)))
+		slice_mask = BIT(DBUF_S3);
+
+	skl_ddb_entry_for_slices(i915, slice_mask, &ddb);
+
+	return ddb.start;
+}
+
+u32 skl_ddb_dbuf_slice_mask(struct drm_i915_private *i915,
+			    const struct skl_ddb_entry *entry)
+{
+	int slice_size = intel_dbuf_slice_size(i915);
+	enum dbuf_slice start_slice, end_slice;
+	u8 slice_mask = 0;
+
+	if (!skl_ddb_entry_size(entry))
+		return 0;
+
+	start_slice = entry->start / slice_size;
+	end_slice = (entry->end - 1) / slice_size;
+
+	/*
+	 * Per plane DDB entry can in a really worst case be on multiple slices
+	 * but single entry is anyway contigious.
+	 */
+	while (start_slice <= end_slice) {
+		slice_mask |= BIT(start_slice);
+		start_slice++;
+	}
+
+	return slice_mask;
+}
+
+static unsigned int intel_crtc_ddb_weight(const struct intel_crtc_state *crtc_state)
+{
+	const struct drm_display_mode *pipe_mode = &crtc_state->hw.pipe_mode;
+	int hdisplay, vdisplay;
+
+	if (!crtc_state->hw.active)
+		return 0;
+
+	/*
+	 * Watermark/ddb requirement highly depends upon width of the
+	 * framebuffer, So instead of allocating DDB equally among pipes
+	 * distribute DDB based on resolution/width of the display.
+	 */
+	drm_mode_get_hv_timing(pipe_mode, &hdisplay, &vdisplay);
+
+	return hdisplay;
+}
+
+static void intel_crtc_dbuf_weights(const struct intel_dbuf_state *dbuf_state,
+				    enum pipe for_pipe,
+				    unsigned int *weight_start,
+				    unsigned int *weight_end,
+				    unsigned int *weight_total)
+{
+	struct drm_i915_private *i915 =
+		to_i915(dbuf_state->base.state->base.dev);
+	enum pipe pipe;
+
+	*weight_start = 0;
+	*weight_end = 0;
+	*weight_total = 0;
+
+	for_each_pipe(i915, pipe) {
+		int weight = dbuf_state->weight[pipe];
+
+		/*
+		 * Do not account pipes using other slice sets
+		 * luckily as of current BSpec slice sets do not partially
+		 * intersect(pipes share either same one slice or same slice set
+		 * i.e no partial intersection), so it is enough to check for
+		 * equality for now.
+		 */
+		if (dbuf_state->slices[pipe] != dbuf_state->slices[for_pipe])
+			continue;
+
+		*weight_total += weight;
+		if (pipe < for_pipe) {
+			*weight_start += weight;
+			*weight_end += weight;
+		} else if (pipe == for_pipe) {
+			*weight_end += weight;
+		}
+	}
+}
+
+static int
+skl_crtc_allocate_ddb(struct intel_atomic_state *state, struct intel_crtc *crtc)
+{
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	unsigned int weight_total, weight_start, weight_end;
+	const struct intel_dbuf_state *old_dbuf_state =
+		intel_atomic_get_old_dbuf_state(state);
+	struct intel_dbuf_state *new_dbuf_state =
+		intel_atomic_get_new_dbuf_state(state);
+	struct intel_crtc_state *crtc_state;
+	struct skl_ddb_entry ddb_slices;
+	enum pipe pipe = crtc->pipe;
+	unsigned int mbus_offset = 0;
+	u32 ddb_range_size;
+	u32 dbuf_slice_mask;
+	u32 start, end;
+	int ret;
+
+	if (new_dbuf_state->weight[pipe] == 0) {
+		skl_ddb_entry_init(&new_dbuf_state->ddb[pipe], 0, 0);
+		goto out;
+	}
+
+	dbuf_slice_mask = new_dbuf_state->slices[pipe];
+
+	skl_ddb_entry_for_slices(i915, dbuf_slice_mask, &ddb_slices);
+	mbus_offset = mbus_ddb_offset(i915, dbuf_slice_mask);
+	ddb_range_size = skl_ddb_entry_size(&ddb_slices);
+
+	intel_crtc_dbuf_weights(new_dbuf_state, pipe,
+				&weight_start, &weight_end, &weight_total);
+
+	start = ddb_range_size * weight_start / weight_total;
+	end = ddb_range_size * weight_end / weight_total;
+
+	skl_ddb_entry_init(&new_dbuf_state->ddb[pipe],
+			   ddb_slices.start - mbus_offset + start,
+			   ddb_slices.start - mbus_offset + end);
+
+out:
+	if (old_dbuf_state->slices[pipe] == new_dbuf_state->slices[pipe] &&
+	    skl_ddb_entry_equal(&old_dbuf_state->ddb[pipe],
+				&new_dbuf_state->ddb[pipe]))
+		return 0;
+
+	ret = intel_atomic_lock_global_state(&new_dbuf_state->base);
+	if (ret)
+		return ret;
+
+	crtc_state = intel_atomic_get_crtc_state(&state->base, crtc);
+	if (IS_ERR(crtc_state))
+		return PTR_ERR(crtc_state);
+
+	/*
+	 * Used for checking overlaps, so we need absolute
+	 * offsets instead of MBUS relative offsets.
+	 */
+	crtc_state->wm.skl.ddb.start = mbus_offset + new_dbuf_state->ddb[pipe].start;
+	crtc_state->wm.skl.ddb.end = mbus_offset + new_dbuf_state->ddb[pipe].end;
+
+	drm_dbg_kms(&i915->drm,
+		    "[CRTC:%d:%s] dbuf slices 0x%x -> 0x%x, ddb (%d - %d) -> (%d - %d), active pipes 0x%x -> 0x%x\n",
+		    crtc->base.base.id, crtc->base.name,
+		    old_dbuf_state->slices[pipe], new_dbuf_state->slices[pipe],
+		    old_dbuf_state->ddb[pipe].start, old_dbuf_state->ddb[pipe].end,
+		    new_dbuf_state->ddb[pipe].start, new_dbuf_state->ddb[pipe].end,
+		    old_dbuf_state->active_pipes, new_dbuf_state->active_pipes);
+
+	return 0;
+}
+
+static int skl_compute_wm_params(const struct intel_crtc_state *crtc_state,
+				 int width, const struct drm_format_info *format,
+				 u64 modifier, unsigned int rotation,
+				 u32 plane_pixel_rate, struct skl_wm_params *wp,
+				 int color_plane);
+
+static void skl_compute_plane_wm(const struct intel_crtc_state *crtc_state,
+				 struct intel_plane *plane,
+				 int level,
+				 unsigned int latency,
+				 const struct skl_wm_params *wp,
+				 const struct skl_wm_level *result_prev,
+				 struct skl_wm_level *result /* out */);
+
+static unsigned int
+skl_cursor_allocation(const struct intel_crtc_state *crtc_state,
+		      int num_active)
+{
+	struct intel_plane *plane = to_intel_plane(crtc_state->uapi.crtc->cursor);
+	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+	int level, max_level = ilk_wm_max_level(i915);
+	struct skl_wm_level wm = {};
+	int ret, min_ddb_alloc = 0;
+	struct skl_wm_params wp;
+
+	ret = skl_compute_wm_params(crtc_state, 256,
+				    drm_format_info(DRM_FORMAT_ARGB8888),
+				    DRM_FORMAT_MOD_LINEAR,
+				    DRM_MODE_ROTATE_0,
+				    crtc_state->pixel_rate, &wp, 0);
+	drm_WARN_ON(&i915->drm, ret);
+
+	for (level = 0; level <= max_level; level++) {
+		unsigned int latency = i915->display.wm.skl_latency[level];
+
+		skl_compute_plane_wm(crtc_state, plane, level, latency, &wp, &wm, &wm);
+		if (wm.min_ddb_alloc == U16_MAX)
+			break;
+
+		min_ddb_alloc = wm.min_ddb_alloc;
+	}
+
+	return max(num_active == 1 ? 32 : 8, min_ddb_alloc);
+}
+
+static void skl_ddb_entry_init_from_hw(struct skl_ddb_entry *entry, u32 reg)
+{
+	skl_ddb_entry_init(entry,
+			   REG_FIELD_GET(PLANE_BUF_START_MASK, reg),
+			   REG_FIELD_GET(PLANE_BUF_END_MASK, reg));
+	if (entry->end)
+		entry->end++;
+}
+
+static void
+skl_ddb_get_hw_plane_state(struct drm_i915_private *i915,
+			   const enum pipe pipe,
+			   const enum plane_id plane_id,
+			   struct skl_ddb_entry *ddb,
+			   struct skl_ddb_entry *ddb_y)
+{
+	u32 val;
+
+	/* Cursor doesn't support NV12/planar, so no extra calculation needed */
+	if (plane_id == PLANE_CURSOR) {
+		val = intel_uncore_read(&i915->uncore, CUR_BUF_CFG(pipe));
+		skl_ddb_entry_init_from_hw(ddb, val);
+		return;
+	}
+
+	val = intel_uncore_read(&i915->uncore, PLANE_BUF_CFG(pipe, plane_id));
+	skl_ddb_entry_init_from_hw(ddb, val);
+
+	if (DISPLAY_VER(i915) >= 11)
+		return;
+
+	val = intel_uncore_read(&i915->uncore, PLANE_NV12_BUF_CFG(pipe, plane_id));
+	skl_ddb_entry_init_from_hw(ddb_y, val);
+}
+
+static void skl_pipe_ddb_get_hw_state(struct intel_crtc *crtc,
+				      struct skl_ddb_entry *ddb,
+				      struct skl_ddb_entry *ddb_y)
+{
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	enum intel_display_power_domain power_domain;
+	enum pipe pipe = crtc->pipe;
+	intel_wakeref_t wakeref;
+	enum plane_id plane_id;
+
+	power_domain = POWER_DOMAIN_PIPE(pipe);
+	wakeref = intel_display_power_get_if_enabled(i915, power_domain);
+	if (!wakeref)
+		return;
+
+	for_each_plane_id_on_crtc(crtc, plane_id)
+		skl_ddb_get_hw_plane_state(i915, pipe,
+					   plane_id,
+					   &ddb[plane_id],
+					   &ddb_y[plane_id]);
+
+	intel_display_power_put(i915, power_domain, wakeref);
+}
+
+struct dbuf_slice_conf_entry {
+	u8 active_pipes;
+	u8 dbuf_mask[I915_MAX_PIPES];
+	bool join_mbus;
+};
+
+/*
+ * Table taken from Bspec 12716
+ * Pipes do have some preferred DBuf slice affinity,
+ * plus there are some hardcoded requirements on how
+ * those should be distributed for multipipe scenarios.
+ * For more DBuf slices algorithm can get even more messy
+ * and less readable, so decided to use a table almost
+ * as is from BSpec itself - that way it is at least easier
+ * to compare, change and check.
+ */
+static const struct dbuf_slice_conf_entry icl_allowed_dbufs[] =
+/* Autogenerated with igt/tools/intel_dbuf_map tool: */
+{
+	{
+		.active_pipes = BIT(PIPE_A),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_B),
+		.dbuf_mask = {
+			[PIPE_B] = BIT(DBUF_S1),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1),
+			[PIPE_B] = BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_C] = BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1),
+			[PIPE_C] = BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_B) | BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_B] = BIT(DBUF_S1),
+			[PIPE_C] = BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1),
+			[PIPE_B] = BIT(DBUF_S1),
+			[PIPE_C] = BIT(DBUF_S2),
+		},
+	},
+	{}
+};
+
+/*
+ * Table taken from Bspec 49255
+ * Pipes do have some preferred DBuf slice affinity,
+ * plus there are some hardcoded requirements on how
+ * those should be distributed for multipipe scenarios.
+ * For more DBuf slices algorithm can get even more messy
+ * and less readable, so decided to use a table almost
+ * as is from BSpec itself - that way it is at least easier
+ * to compare, change and check.
+ */
+static const struct dbuf_slice_conf_entry tgl_allowed_dbufs[] =
+/* Autogenerated with igt/tools/intel_dbuf_map tool: */
+{
+	{
+		.active_pipes = BIT(PIPE_A),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_B),
+		.dbuf_mask = {
+			[PIPE_B] = BIT(DBUF_S1) | BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S2),
+			[PIPE_B] = BIT(DBUF_S1),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_C] = BIT(DBUF_S2) | BIT(DBUF_S1),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1),
+			[PIPE_C] = BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_B) | BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_B] = BIT(DBUF_S1),
+			[PIPE_C] = BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1),
+			[PIPE_B] = BIT(DBUF_S1),
+			[PIPE_C] = BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_D] = BIT(DBUF_S2) | BIT(DBUF_S1),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1),
+			[PIPE_D] = BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_B) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_B] = BIT(DBUF_S1),
+			[PIPE_D] = BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1),
+			[PIPE_B] = BIT(DBUF_S1),
+			[PIPE_D] = BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_C) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_C] = BIT(DBUF_S1),
+			[PIPE_D] = BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_C) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1),
+			[PIPE_C] = BIT(DBUF_S2),
+			[PIPE_D] = BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_B] = BIT(DBUF_S1),
+			[PIPE_C] = BIT(DBUF_S2),
+			[PIPE_D] = BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1),
+			[PIPE_B] = BIT(DBUF_S1),
+			[PIPE_C] = BIT(DBUF_S2),
+			[PIPE_D] = BIT(DBUF_S2),
+		},
+	},
+	{}
+};
+
+static const struct dbuf_slice_conf_entry dg2_allowed_dbufs[] = {
+	{
+		.active_pipes = BIT(PIPE_A),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_B),
+		.dbuf_mask = {
+			[PIPE_B] = BIT(DBUF_S1) | BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1),
+			[PIPE_B] = BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_B) | BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_B] = BIT(DBUF_S1) | BIT(DBUF_S2),
+			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1),
+			[PIPE_B] = BIT(DBUF_S2),
+			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_D] = BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+			[PIPE_D] = BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_B) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_B] = BIT(DBUF_S1) | BIT(DBUF_S2),
+			[PIPE_D] = BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1),
+			[PIPE_B] = BIT(DBUF_S2),
+			[PIPE_D] = BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_C) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_C] = BIT(DBUF_S3),
+			[PIPE_D] = BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_C) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+			[PIPE_C] = BIT(DBUF_S3),
+			[PIPE_D] = BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_B] = BIT(DBUF_S1) | BIT(DBUF_S2),
+			[PIPE_C] = BIT(DBUF_S3),
+			[PIPE_D] = BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1),
+			[PIPE_B] = BIT(DBUF_S2),
+			[PIPE_C] = BIT(DBUF_S3),
+			[PIPE_D] = BIT(DBUF_S4),
+		},
+	},
+	{}
+};
+
+static const struct dbuf_slice_conf_entry adlp_allowed_dbufs[] = {
+	/*
+	 * Keep the join_mbus cases first so check_mbus_joined()
+	 * will prefer them over the !join_mbus cases.
+	 */
+	{
+		.active_pipes = BIT(PIPE_A),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2) | BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+		.join_mbus = true,
+	},
+	{
+		.active_pipes = BIT(PIPE_B),
+		.dbuf_mask = {
+			[PIPE_B] = BIT(DBUF_S1) | BIT(DBUF_S2) | BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+		.join_mbus = true,
+	},
+	{
+		.active_pipes = BIT(PIPE_A),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+		},
+		.join_mbus = false,
+	},
+	{
+		.active_pipes = BIT(PIPE_B),
+		.dbuf_mask = {
+			[PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+		.join_mbus = false,
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+			[PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_B) | BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
+			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+			[PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
+			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+			[PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_B) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
+			[PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+			[PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
+			[PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_C) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+			[PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_C) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+			[PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
+			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+			[PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+			[PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
+			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+			[PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
+		},
+	},
+	{}
+
+};
+
+static bool check_mbus_joined(u8 active_pipes,
+			      const struct dbuf_slice_conf_entry *dbuf_slices)
+{
+	int i;
+
+	for (i = 0; dbuf_slices[i].active_pipes != 0; i++) {
+		if (dbuf_slices[i].active_pipes == active_pipes)
+			return dbuf_slices[i].join_mbus;
+	}
+	return false;
+}
+
+static bool adlp_check_mbus_joined(u8 active_pipes)
+{
+	return check_mbus_joined(active_pipes, adlp_allowed_dbufs);
+}
+
+static u8 compute_dbuf_slices(enum pipe pipe, u8 active_pipes, bool join_mbus,
+			      const struct dbuf_slice_conf_entry *dbuf_slices)
+{
+	int i;
+
+	for (i = 0; dbuf_slices[i].active_pipes != 0; i++) {
+		if (dbuf_slices[i].active_pipes == active_pipes &&
+		    dbuf_slices[i].join_mbus == join_mbus)
+			return dbuf_slices[i].dbuf_mask[pipe];
+	}
+	return 0;
+}
+
+/*
+ * This function finds an entry with same enabled pipe configuration and
+ * returns correspondent DBuf slice mask as stated in BSpec for particular
+ * platform.
+ */
+static u8 icl_compute_dbuf_slices(enum pipe pipe, u8 active_pipes, bool join_mbus)
+{
+	/*
+	 * FIXME: For ICL this is still a bit unclear as prev BSpec revision
+	 * required calculating "pipe ratio" in order to determine
+	 * if one or two slices can be used for single pipe configurations
+	 * as additional constraint to the existing table.
+	 * However based on recent info, it should be not "pipe ratio"
+	 * but rather ratio between pixel_rate and cdclk with additional
+	 * constants, so for now we are using only table until this is
+	 * clarified. Also this is the reason why crtc_state param is
+	 * still here - we will need it once those additional constraints
+	 * pop up.
+	 */
+	return compute_dbuf_slices(pipe, active_pipes, join_mbus,
+				   icl_allowed_dbufs);
+}
+
+static u8 tgl_compute_dbuf_slices(enum pipe pipe, u8 active_pipes, bool join_mbus)
+{
+	return compute_dbuf_slices(pipe, active_pipes, join_mbus,
+				   tgl_allowed_dbufs);
+}
+
+static u8 adlp_compute_dbuf_slices(enum pipe pipe, u8 active_pipes, bool join_mbus)
+{
+	return compute_dbuf_slices(pipe, active_pipes, join_mbus,
+				   adlp_allowed_dbufs);
+}
+
+static u8 dg2_compute_dbuf_slices(enum pipe pipe, u8 active_pipes, bool join_mbus)
+{
+	return compute_dbuf_slices(pipe, active_pipes, join_mbus,
+				   dg2_allowed_dbufs);
+}
+
+static u8 skl_compute_dbuf_slices(struct intel_crtc *crtc, u8 active_pipes, bool join_mbus)
+{
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+
+	if (IS_DG2(i915))
+		return dg2_compute_dbuf_slices(pipe, active_pipes, join_mbus);
+	else if (DISPLAY_VER(i915) >= 13)
+		return adlp_compute_dbuf_slices(pipe, active_pipes, join_mbus);
+	else if (DISPLAY_VER(i915) == 12)
+		return tgl_compute_dbuf_slices(pipe, active_pipes, join_mbus);
+	else if (DISPLAY_VER(i915) == 11)
+		return icl_compute_dbuf_slices(pipe, active_pipes, join_mbus);
+	/*
+	 * For anything else just return one slice yet.
+	 * Should be extended for other platforms.
+	 */
+	return active_pipes & BIT(pipe) ? BIT(DBUF_S1) : 0;
+}
+
+static bool
+use_minimal_wm0_only(const struct intel_crtc_state *crtc_state,
+		     struct intel_plane *plane)
+{
+	struct drm_i915_private *i915 = to_i915(plane->base.dev);
+
+	return DISPLAY_VER(i915) >= 13 &&
+	       crtc_state->uapi.async_flip &&
+	       plane->async_flip;
+}
+
+static u64
+skl_total_relative_data_rate(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	enum plane_id plane_id;
+	u64 data_rate = 0;
+
+	for_each_plane_id_on_crtc(crtc, plane_id) {
+		if (plane_id == PLANE_CURSOR)
+			continue;
+
+		data_rate += crtc_state->rel_data_rate[plane_id];
+
+		if (DISPLAY_VER(i915) < 11)
+			data_rate += crtc_state->rel_data_rate_y[plane_id];
+	}
+
+	return data_rate;
+}
+
+static const struct skl_wm_level *
+skl_plane_wm_level(const struct skl_pipe_wm *pipe_wm,
+		   enum plane_id plane_id,
+		   int level)
+{
+	const struct skl_plane_wm *wm = &pipe_wm->planes[plane_id];
+
+	if (level == 0 && pipe_wm->use_sagv_wm)
+		return &wm->sagv.wm0;
+
+	return &wm->wm[level];
+}
+
+static const struct skl_wm_level *
+skl_plane_trans_wm(const struct skl_pipe_wm *pipe_wm,
+		   enum plane_id plane_id)
+{
+	const struct skl_plane_wm *wm = &pipe_wm->planes[plane_id];
+
+	if (pipe_wm->use_sagv_wm)
+		return &wm->sagv.trans_wm;
+
+	return &wm->trans_wm;
+}
+
+/*
+ * We only disable the watermarks for each plane if
+ * they exceed the ddb allocation of said plane. This
+ * is done so that we don't end up touching cursor
+ * watermarks needlessly when some other plane reduces
+ * our max possible watermark level.
+ *
+ * Bspec has this to say about the PLANE_WM enable bit:
+ * "All the watermarks at this level for all enabled
+ *  planes must be enabled before the level will be used."
+ * So this is actually safe to do.
+ */
+static void
+skl_check_wm_level(struct skl_wm_level *wm, const struct skl_ddb_entry *ddb)
+{
+	if (wm->min_ddb_alloc > skl_ddb_entry_size(ddb))
+		memset(wm, 0, sizeof(*wm));
+}
+
+static void
+skl_check_nv12_wm_level(struct skl_wm_level *wm, struct skl_wm_level *uv_wm,
+			const struct skl_ddb_entry *ddb_y, const struct skl_ddb_entry *ddb)
+{
+	if (wm->min_ddb_alloc > skl_ddb_entry_size(ddb_y) ||
+	    uv_wm->min_ddb_alloc > skl_ddb_entry_size(ddb)) {
+		memset(wm, 0, sizeof(*wm));
+		memset(uv_wm, 0, sizeof(*uv_wm));
+	}
+}
+
+static bool icl_need_wm1_wa(struct drm_i915_private *i915,
+			    enum plane_id plane_id)
+{
+	/*
+	 * Wa_1408961008:icl, ehl
+	 * Wa_14012656716:tgl, adl
+	 * Underruns with WM1+ disabled
+	 */
+	return DISPLAY_VER(i915) == 11 ||
+	       (IS_DISPLAY_VER(i915, 12, 13) && plane_id == PLANE_CURSOR);
+}
+
+struct skl_plane_ddb_iter {
+	u64 data_rate;
+	u16 start, size;
+};
+
+static void
+skl_allocate_plane_ddb(struct skl_plane_ddb_iter *iter,
+		       struct skl_ddb_entry *ddb,
+		       const struct skl_wm_level *wm,
+		       u64 data_rate)
+{
+	u16 size, extra = 0;
+
+	if (data_rate) {
+		extra = min_t(u16, iter->size,
+			      DIV64_U64_ROUND_UP(iter->size * data_rate,
+						 iter->data_rate));
+		iter->size -= extra;
+		iter->data_rate -= data_rate;
+	}
+
+	/*
+	 * Keep ddb entry of all disabled planes explicitly zeroed
+	 * to avoid skl_ddb_add_affected_planes() adding them to
+	 * the state when other planes change their allocations.
+	 */
+	size = wm->min_ddb_alloc + extra;
+	if (size)
+		iter->start = skl_ddb_entry_init(ddb, iter->start,
+						 iter->start + size);
+}
+
+static int
+skl_crtc_allocate_plane_ddb(struct intel_atomic_state *state,
+			    struct intel_crtc *crtc)
+{
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	const struct intel_dbuf_state *dbuf_state =
+		intel_atomic_get_new_dbuf_state(state);
+	const struct skl_ddb_entry *alloc = &dbuf_state->ddb[crtc->pipe];
+	int num_active = hweight8(dbuf_state->active_pipes);
+	struct skl_plane_ddb_iter iter;
+	enum plane_id plane_id;
+	u16 cursor_size;
+	u32 blocks;
+	int level;
+
+	/* Clear the partitioning for disabled planes. */
+	memset(crtc_state->wm.skl.plane_ddb, 0, sizeof(crtc_state->wm.skl.plane_ddb));
+	memset(crtc_state->wm.skl.plane_ddb_y, 0, sizeof(crtc_state->wm.skl.plane_ddb_y));
+
+	if (!crtc_state->hw.active)
+		return 0;
+
+	iter.start = alloc->start;
+	iter.size = skl_ddb_entry_size(alloc);
+	if (iter.size == 0)
+		return 0;
+
+	/* Allocate fixed number of blocks for cursor. */
+	cursor_size = skl_cursor_allocation(crtc_state, num_active);
+	iter.size -= cursor_size;
+	skl_ddb_entry_init(&crtc_state->wm.skl.plane_ddb[PLANE_CURSOR],
+			   alloc->end - cursor_size, alloc->end);
+
+	iter.data_rate = skl_total_relative_data_rate(crtc_state);
+
+	/*
+	 * Find the highest watermark level for which we can satisfy the block
+	 * requirement of active planes.
+	 */
+	for (level = ilk_wm_max_level(i915); level >= 0; level--) {
+		blocks = 0;
+		for_each_plane_id_on_crtc(crtc, plane_id) {
+			const struct skl_plane_wm *wm =
+				&crtc_state->wm.skl.optimal.planes[plane_id];
+
+			if (plane_id == PLANE_CURSOR) {
+				const struct skl_ddb_entry *ddb =
+					&crtc_state->wm.skl.plane_ddb[plane_id];
+
+				if (wm->wm[level].min_ddb_alloc > skl_ddb_entry_size(ddb)) {
+					drm_WARN_ON(&i915->drm,
+						    wm->wm[level].min_ddb_alloc != U16_MAX);
+					blocks = U32_MAX;
+					break;
+				}
+				continue;
+			}
+
+			blocks += wm->wm[level].min_ddb_alloc;
+			blocks += wm->uv_wm[level].min_ddb_alloc;
+		}
+
+		if (blocks <= iter.size) {
+			iter.size -= blocks;
+			break;
+		}
+	}
+
+	if (level < 0) {
+		drm_dbg_kms(&i915->drm,
+			    "Requested display configuration exceeds system DDB limitations");
+		drm_dbg_kms(&i915->drm, "minimum required %d/%d\n",
+			    blocks, iter.size);
+		return -EINVAL;
+	}
+
+	/* avoid the WARN later when we don't allocate any extra DDB */
+	if (iter.data_rate == 0)
+		iter.size = 0;
+
+	/*
+	 * Grant each plane the blocks it requires at the highest achievable
+	 * watermark level, plus an extra share of the leftover blocks
+	 * proportional to its relative data rate.
+	 */
+	for_each_plane_id_on_crtc(crtc, plane_id) {
+		struct skl_ddb_entry *ddb =
+			&crtc_state->wm.skl.plane_ddb[plane_id];
+		struct skl_ddb_entry *ddb_y =
+			&crtc_state->wm.skl.plane_ddb_y[plane_id];
+		const struct skl_plane_wm *wm =
+			&crtc_state->wm.skl.optimal.planes[plane_id];
+
+		if (plane_id == PLANE_CURSOR)
+			continue;
+
+		if (DISPLAY_VER(i915) < 11 &&
+		    crtc_state->nv12_planes & BIT(plane_id)) {
+			skl_allocate_plane_ddb(&iter, ddb_y, &wm->wm[level],
+					       crtc_state->rel_data_rate_y[plane_id]);
+			skl_allocate_plane_ddb(&iter, ddb, &wm->uv_wm[level],
+					       crtc_state->rel_data_rate[plane_id]);
+		} else {
+			skl_allocate_plane_ddb(&iter, ddb, &wm->wm[level],
+					       crtc_state->rel_data_rate[plane_id]);
+		}
+	}
+	drm_WARN_ON(&i915->drm, iter.size != 0 || iter.data_rate != 0);
+
+	/*
+	 * When we calculated watermark values we didn't know how high
+	 * of a level we'd actually be able to hit, so we just marked
+	 * all levels as "enabled."  Go back now and disable the ones
+	 * that aren't actually possible.
+	 */
+	for (level++; level <= ilk_wm_max_level(i915); level++) {
+		for_each_plane_id_on_crtc(crtc, plane_id) {
+			const struct skl_ddb_entry *ddb =
+				&crtc_state->wm.skl.plane_ddb[plane_id];
+			const struct skl_ddb_entry *ddb_y =
+				&crtc_state->wm.skl.plane_ddb_y[plane_id];
+			struct skl_plane_wm *wm =
+				&crtc_state->wm.skl.optimal.planes[plane_id];
+
+			if (DISPLAY_VER(i915) < 11 &&
+			    crtc_state->nv12_planes & BIT(plane_id))
+				skl_check_nv12_wm_level(&wm->wm[level],
+							&wm->uv_wm[level],
+							ddb_y, ddb);
+			else
+				skl_check_wm_level(&wm->wm[level], ddb);
+
+			if (icl_need_wm1_wa(i915, plane_id) &&
+			    level == 1 && !wm->wm[level].enable &&
+			    wm->wm[0].enable) {
+				wm->wm[level].blocks = wm->wm[0].blocks;
+				wm->wm[level].lines = wm->wm[0].lines;
+				wm->wm[level].ignore_lines = wm->wm[0].ignore_lines;
+			}
+		}
+	}
+
+	/*
+	 * Go back and disable the transition and SAGV watermarks
+	 * if it turns out we don't have enough DDB blocks for them.
+	 */
+	for_each_plane_id_on_crtc(crtc, plane_id) {
+		const struct skl_ddb_entry *ddb =
+			&crtc_state->wm.skl.plane_ddb[plane_id];
+		const struct skl_ddb_entry *ddb_y =
+			&crtc_state->wm.skl.plane_ddb_y[plane_id];
+		struct skl_plane_wm *wm =
+			&crtc_state->wm.skl.optimal.planes[plane_id];
+
+		if (DISPLAY_VER(i915) < 11 &&
+		    crtc_state->nv12_planes & BIT(plane_id)) {
+			skl_check_wm_level(&wm->trans_wm, ddb_y);
+		} else {
+			WARN_ON(skl_ddb_entry_size(ddb_y));
+
+			skl_check_wm_level(&wm->trans_wm, ddb);
+		}
+
+		skl_check_wm_level(&wm->sagv.wm0, ddb);
+		skl_check_wm_level(&wm->sagv.trans_wm, ddb);
+	}
+
+	return 0;
+}
+
+/*
+ * The max latency should be 257 (max the punit can code is 255 and we add 2us
+ * for the read latency) and cpp should always be <= 8, so that
+ * should allow pixel_rate up to ~2 GHz which seems sufficient since max
+ * 2xcdclk is 1350 MHz and the pixel rate should never exceed that.
+ */
+static uint_fixed_16_16_t
+skl_wm_method1(const struct drm_i915_private *i915, u32 pixel_rate,
+	       u8 cpp, u32 latency, u32 dbuf_block_size)
+{
+	u32 wm_intermediate_val;
+	uint_fixed_16_16_t ret;
+
+	if (latency == 0)
+		return FP_16_16_MAX;
+
+	wm_intermediate_val = latency * pixel_rate * cpp;
+	ret = div_fixed16(wm_intermediate_val, 1000 * dbuf_block_size);
+
+	if (DISPLAY_VER(i915) >= 10)
+		ret = add_fixed16_u32(ret, 1);
+
+	return ret;
+}
+
+static uint_fixed_16_16_t
+skl_wm_method2(u32 pixel_rate, u32 pipe_htotal, u32 latency,
+	       uint_fixed_16_16_t plane_blocks_per_line)
+{
+	u32 wm_intermediate_val;
+	uint_fixed_16_16_t ret;
+
+	if (latency == 0)
+		return FP_16_16_MAX;
+
+	wm_intermediate_val = latency * pixel_rate;
+	wm_intermediate_val = DIV_ROUND_UP(wm_intermediate_val,
+					   pipe_htotal * 1000);
+	ret = mul_u32_fixed16(wm_intermediate_val, plane_blocks_per_line);
+	return ret;
+}
+
+static uint_fixed_16_16_t
+intel_get_linetime_us(const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+	u32 pixel_rate;
+	u32 crtc_htotal;
+	uint_fixed_16_16_t linetime_us;
+
+	if (!crtc_state->hw.active)
+		return u32_to_fixed16(0);
+
+	pixel_rate = crtc_state->pixel_rate;
+
+	if (drm_WARN_ON(&i915->drm, pixel_rate == 0))
+		return u32_to_fixed16(0);
+
+	crtc_htotal = crtc_state->hw.pipe_mode.crtc_htotal;
+	linetime_us = div_fixed16(crtc_htotal * 1000, pixel_rate);
+
+	return linetime_us;
+}
+
+static int
+skl_compute_wm_params(const struct intel_crtc_state *crtc_state,
+		      int width, const struct drm_format_info *format,
+		      u64 modifier, unsigned int rotation,
+		      u32 plane_pixel_rate, struct skl_wm_params *wp,
+		      int color_plane)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	u32 interm_pbpl;
+
+	/* only planar format has two planes */
+	if (color_plane == 1 &&
+	    !intel_format_info_is_yuv_semiplanar(format, modifier)) {
+		drm_dbg_kms(&i915->drm,
+			    "Non planar format have single plane\n");
+		return -EINVAL;
+	}
+
+	wp->y_tiled = modifier == I915_FORMAT_MOD_Y_TILED ||
+		      modifier == I915_FORMAT_MOD_4_TILED ||
+		      modifier == I915_FORMAT_MOD_Yf_TILED ||
+		      modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
+		      modifier == I915_FORMAT_MOD_Yf_TILED_CCS ||
+		      modifier == I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS ||
+		      modifier == I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS ||
+		      modifier == I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC ||
+		      modifier == I915_FORMAT_MOD_4_TILED_DG2_RC_CCS ||
+		      modifier == I915_FORMAT_MOD_4_TILED_DG2_MC_CCS ||
+		      modifier == I915_FORMAT_MOD_4_TILED_DG2_RC_CCS_CC;
+	wp->x_tiled = modifier == I915_FORMAT_MOD_X_TILED;
+	wp->rc_surface = modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
+			 modifier == I915_FORMAT_MOD_Yf_TILED_CCS ||
+			 modifier == I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS ||
+			 modifier == I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS ||
+			 modifier == I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC ||
+			 modifier == I915_FORMAT_MOD_4_TILED_DG2_RC_CCS ||
+			 modifier == I915_FORMAT_MOD_4_TILED_DG2_MC_CCS ||
+			 modifier == I915_FORMAT_MOD_4_TILED_DG2_RC_CCS_CC;
+	wp->is_planar = intel_format_info_is_yuv_semiplanar(format, modifier);
+
+	wp->width = width;
+	if (color_plane == 1 && wp->is_planar)
+		wp->width /= 2;
+
+	wp->cpp = format->cpp[color_plane];
+	wp->plane_pixel_rate = plane_pixel_rate;
+
+	if (DISPLAY_VER(i915) >= 11 &&
+	    modifier == I915_FORMAT_MOD_Yf_TILED  && wp->cpp == 1)
+		wp->dbuf_block_size = 256;
+	else
+		wp->dbuf_block_size = 512;
+
+	if (drm_rotation_90_or_270(rotation)) {
+		switch (wp->cpp) {
+		case 1:
+			wp->y_min_scanlines = 16;
+			break;
+		case 2:
+			wp->y_min_scanlines = 8;
+			break;
+		case 4:
+			wp->y_min_scanlines = 4;
+			break;
+		default:
+			MISSING_CASE(wp->cpp);
+			return -EINVAL;
+		}
+	} else {
+		wp->y_min_scanlines = 4;
+	}
+
+	if (skl_needs_memory_bw_wa(i915))
+		wp->y_min_scanlines *= 2;
+
+	wp->plane_bytes_per_line = wp->width * wp->cpp;
+	if (wp->y_tiled) {
+		interm_pbpl = DIV_ROUND_UP(wp->plane_bytes_per_line *
+					   wp->y_min_scanlines,
+					   wp->dbuf_block_size);
+
+		if (DISPLAY_VER(i915) >= 10)
+			interm_pbpl++;
+
+		wp->plane_blocks_per_line = div_fixed16(interm_pbpl,
+							wp->y_min_scanlines);
+	} else {
+		interm_pbpl = DIV_ROUND_UP(wp->plane_bytes_per_line,
+					   wp->dbuf_block_size);
+
+		if (!wp->x_tiled || DISPLAY_VER(i915) >= 10)
+			interm_pbpl++;
+
+		wp->plane_blocks_per_line = u32_to_fixed16(interm_pbpl);
+	}
+
+	wp->y_tile_minimum = mul_u32_fixed16(wp->y_min_scanlines,
+					     wp->plane_blocks_per_line);
+
+	wp->linetime_us = fixed16_to_u32_round_up(intel_get_linetime_us(crtc_state));
+
+	return 0;
+}
+
+static int
+skl_compute_plane_wm_params(const struct intel_crtc_state *crtc_state,
+			    const struct intel_plane_state *plane_state,
+			    struct skl_wm_params *wp, int color_plane)
+{
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	int width;
+
+	/*
+	 * Src coordinates are already rotated by 270 degrees for
+	 * the 90/270 degree plane rotation cases (to match the
+	 * GTT mapping), hence no need to account for rotation here.
+	 */
+	width = drm_rect_width(&plane_state->uapi.src) >> 16;
+
+	return skl_compute_wm_params(crtc_state, width,
+				     fb->format, fb->modifier,
+				     plane_state->hw.rotation,
+				     intel_plane_pixel_rate(crtc_state, plane_state),
+				     wp, color_plane);
+}
+
+static bool skl_wm_has_lines(struct drm_i915_private *i915, int level)
+{
+	if (DISPLAY_VER(i915) >= 10)
+		return true;
+
+	/* The number of lines are ignored for the level 0 watermark. */
+	return level > 0;
+}
+
+static int skl_wm_max_lines(struct drm_i915_private *i915)
+{
+	if (DISPLAY_VER(i915) >= 13)
+		return 255;
+	else
+		return 31;
+}
+
+static void skl_compute_plane_wm(const struct intel_crtc_state *crtc_state,
+				 struct intel_plane *plane,
+				 int level,
+				 unsigned int latency,
+				 const struct skl_wm_params *wp,
+				 const struct skl_wm_level *result_prev,
+				 struct skl_wm_level *result /* out */)
+{
+	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+	uint_fixed_16_16_t method1, method2;
+	uint_fixed_16_16_t selected_result;
+	u32 blocks, lines, min_ddb_alloc = 0;
+
+	if (latency == 0 ||
+	    (use_minimal_wm0_only(crtc_state, plane) && level > 0)) {
+		/* reject it */
+		result->min_ddb_alloc = U16_MAX;
+		return;
+	}
+
+	/*
+	 * WaIncreaseLatencyIPCEnabled: kbl,cfl
+	 * Display WA #1141: kbl,cfl
+	 */
+	if ((IS_KABYLAKE(i915) || IS_COFFEELAKE(i915) || IS_COMETLAKE(i915)) &&
+	    skl_watermark_ipc_enabled(i915))
+		latency += 4;
+
+	if (skl_needs_memory_bw_wa(i915) && wp->x_tiled)
+		latency += 15;
+
+	method1 = skl_wm_method1(i915, wp->plane_pixel_rate,
+				 wp->cpp, latency, wp->dbuf_block_size);
+	method2 = skl_wm_method2(wp->plane_pixel_rate,
+				 crtc_state->hw.pipe_mode.crtc_htotal,
+				 latency,
+				 wp->plane_blocks_per_line);
+
+	if (wp->y_tiled) {
+		selected_result = max_fixed16(method2, wp->y_tile_minimum);
+	} else {
+		if ((wp->cpp * crtc_state->hw.pipe_mode.crtc_htotal /
+		     wp->dbuf_block_size < 1) &&
+		     (wp->plane_bytes_per_line / wp->dbuf_block_size < 1)) {
+			selected_result = method2;
+		} else if (latency >= wp->linetime_us) {
+			if (DISPLAY_VER(i915) == 9)
+				selected_result = min_fixed16(method1, method2);
+			else
+				selected_result = method2;
+		} else {
+			selected_result = method1;
+		}
+	}
+
+	blocks = fixed16_to_u32_round_up(selected_result) + 1;
+	/*
+	 * Lets have blocks at minimum equivalent to plane_blocks_per_line
+	 * as there will be at minimum one line for lines configuration. This
+	 * is a work around for FIFO underruns observed with resolutions like
+	 * 4k 60 Hz in single channel DRAM configurations.
+	 *
+	 * As per the Bspec 49325, if the ddb allocation can hold at least
+	 * one plane_blocks_per_line, we should have selected method2 in
+	 * the above logic. Assuming that modern versions have enough dbuf
+	 * and method2 guarantees blocks equivalent to at least 1 line,
+	 * select the blocks as plane_blocks_per_line.
+	 *
+	 * TODO: Revisit the logic when we have better understanding on DRAM
+	 * channels' impact on the level 0 memory latency and the relevant
+	 * wm calculations.
+	 */
+	if (skl_wm_has_lines(i915, level))
+		blocks = max(blocks,
+			     fixed16_to_u32_round_up(wp->plane_blocks_per_line));
+	lines = div_round_up_fixed16(selected_result,
+				     wp->plane_blocks_per_line);
+
+	if (DISPLAY_VER(i915) == 9) {
+		/* Display WA #1125: skl,bxt,kbl */
+		if (level == 0 && wp->rc_surface)
+			blocks += fixed16_to_u32_round_up(wp->y_tile_minimum);
+
+		/* Display WA #1126: skl,bxt,kbl */
+		if (level >= 1 && level <= 7) {
+			if (wp->y_tiled) {
+				blocks += fixed16_to_u32_round_up(wp->y_tile_minimum);
+				lines += wp->y_min_scanlines;
+			} else {
+				blocks++;
+			}
+
+			/*
+			 * Make sure result blocks for higher latency levels are
+			 * at least as high as level below the current level.
+			 * Assumption in DDB algorithm optimization for special
+			 * cases. Also covers Display WA #1125 for RC.
+			 */
+			if (result_prev->blocks > blocks)
+				blocks = result_prev->blocks;
+		}
+	}
+
+	if (DISPLAY_VER(i915) >= 11) {
+		if (wp->y_tiled) {
+			int extra_lines;
+
+			if (lines % wp->y_min_scanlines == 0)
+				extra_lines = wp->y_min_scanlines;
+			else
+				extra_lines = wp->y_min_scanlines * 2 -
+					lines % wp->y_min_scanlines;
+
+			min_ddb_alloc = mul_round_up_u32_fixed16(lines + extra_lines,
+								 wp->plane_blocks_per_line);
+		} else {
+			min_ddb_alloc = blocks + DIV_ROUND_UP(blocks, 10);
+		}
+	}
+
+	if (!skl_wm_has_lines(i915, level))
+		lines = 0;
+
+	if (lines > skl_wm_max_lines(i915)) {
+		/* reject it */
+		result->min_ddb_alloc = U16_MAX;
+		return;
+	}
+
+	/*
+	 * If lines is valid, assume we can use this watermark level
+	 * for now.  We'll come back and disable it after we calculate the
+	 * DDB allocation if it turns out we don't actually have enough
+	 * blocks to satisfy it.
+	 */
+	result->blocks = blocks;
+	result->lines = lines;
+	/* Bspec says: value >= plane ddb allocation -> invalid, hence the +1 here */
+	result->min_ddb_alloc = max(min_ddb_alloc, blocks) + 1;
+	result->enable = true;
+
+	if (DISPLAY_VER(i915) < 12 && i915->display.sagv.block_time_us)
+		result->can_sagv = latency >= i915->display.sagv.block_time_us;
+}
+
+static void
+skl_compute_wm_levels(const struct intel_crtc_state *crtc_state,
+		      struct intel_plane *plane,
+		      const struct skl_wm_params *wm_params,
+		      struct skl_wm_level *levels)
+{
+	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+	int level, max_level = ilk_wm_max_level(i915);
+	struct skl_wm_level *result_prev = &levels[0];
+
+	for (level = 0; level <= max_level; level++) {
+		struct skl_wm_level *result = &levels[level];
+		unsigned int latency = i915->display.wm.skl_latency[level];
+
+		skl_compute_plane_wm(crtc_state, plane, level, latency,
+				     wm_params, result_prev, result);
+
+		result_prev = result;
+	}
+}
+
+static void tgl_compute_sagv_wm(const struct intel_crtc_state *crtc_state,
+				struct intel_plane *plane,
+				const struct skl_wm_params *wm_params,
+				struct skl_plane_wm *plane_wm)
+{
+	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+	struct skl_wm_level *sagv_wm = &plane_wm->sagv.wm0;
+	struct skl_wm_level *levels = plane_wm->wm;
+	unsigned int latency = 0;
+
+	if (i915->display.sagv.block_time_us)
+		latency = i915->display.sagv.block_time_us + i915->display.wm.skl_latency[0];
+
+	skl_compute_plane_wm(crtc_state, plane, 0, latency,
+			     wm_params, &levels[0],
+			     sagv_wm);
+}
+
+static void skl_compute_transition_wm(struct drm_i915_private *i915,
+				      struct skl_wm_level *trans_wm,
+				      const struct skl_wm_level *wm0,
+				      const struct skl_wm_params *wp)
+{
+	u16 trans_min, trans_amount, trans_y_tile_min;
+	u16 wm0_blocks, trans_offset, blocks;
+
+	/* Transition WM don't make any sense if ipc is disabled */
+	if (!skl_watermark_ipc_enabled(i915))
+		return;
+
+	/*
+	 * WaDisableTWM:skl,kbl,cfl,bxt
+	 * Transition WM are not recommended by HW team for GEN9
+	 */
+	if (DISPLAY_VER(i915) == 9)
+		return;
+
+	if (DISPLAY_VER(i915) >= 11)
+		trans_min = 4;
+	else
+		trans_min = 14;
+
+	/* Display WA #1140: glk,cnl */
+	if (DISPLAY_VER(i915) == 10)
+		trans_amount = 0;
+	else
+		trans_amount = 10; /* This is configurable amount */
+
+	trans_offset = trans_min + trans_amount;
+
+	/*
+	 * The spec asks for Selected Result Blocks for wm0 (the real value),
+	 * not Result Blocks (the integer value). Pay attention to the capital
+	 * letters. The value wm_l0->blocks is actually Result Blocks, but
+	 * since Result Blocks is the ceiling of Selected Result Blocks plus 1,
+	 * and since we later will have to get the ceiling of the sum in the
+	 * transition watermarks calculation, we can just pretend Selected
+	 * Result Blocks is Result Blocks minus 1 and it should work for the
+	 * current platforms.
+	 */
+	wm0_blocks = wm0->blocks - 1;
+
+	if (wp->y_tiled) {
+		trans_y_tile_min =
+			(u16)mul_round_up_u32_fixed16(2, wp->y_tile_minimum);
+		blocks = max(wm0_blocks, trans_y_tile_min) + trans_offset;
+	} else {
+		blocks = wm0_blocks + trans_offset;
+	}
+	blocks++;
+
+	/*
+	 * Just assume we can enable the transition watermark.  After
+	 * computing the DDB we'll come back and disable it if that
+	 * assumption turns out to be false.
+	 */
+	trans_wm->blocks = blocks;
+	trans_wm->min_ddb_alloc = max_t(u16, wm0->min_ddb_alloc, blocks + 1);
+	trans_wm->enable = true;
+}
+
+static int skl_build_plane_wm_single(struct intel_crtc_state *crtc_state,
+				     const struct intel_plane_state *plane_state,
+				     struct intel_plane *plane, int color_plane)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	struct skl_plane_wm *wm = &crtc_state->wm.skl.raw.planes[plane->id];
+	struct skl_wm_params wm_params;
+	int ret;
+
+	ret = skl_compute_plane_wm_params(crtc_state, plane_state,
+					  &wm_params, color_plane);
+	if (ret)
+		return ret;
+
+	skl_compute_wm_levels(crtc_state, plane, &wm_params, wm->wm);
+
+	skl_compute_transition_wm(i915, &wm->trans_wm,
+				  &wm->wm[0], &wm_params);
+
+	if (DISPLAY_VER(i915) >= 12) {
+		tgl_compute_sagv_wm(crtc_state, plane, &wm_params, wm);
+
+		skl_compute_transition_wm(i915, &wm->sagv.trans_wm,
+					  &wm->sagv.wm0, &wm_params);
+	}
+
+	return 0;
+}
+
+static int skl_build_plane_wm_uv(struct intel_crtc_state *crtc_state,
+				 const struct intel_plane_state *plane_state,
+				 struct intel_plane *plane)
+{
+	struct skl_plane_wm *wm = &crtc_state->wm.skl.raw.planes[plane->id];
+	struct skl_wm_params wm_params;
+	int ret;
+
+	wm->is_planar = true;
+
+	/* uv plane watermarks must also be validated for NV12/Planar */
+	ret = skl_compute_plane_wm_params(crtc_state, plane_state,
+					  &wm_params, 1);
+	if (ret)
+		return ret;
+
+	skl_compute_wm_levels(crtc_state, plane, &wm_params, wm->uv_wm);
+
+	return 0;
+}
+
+static int skl_build_plane_wm(struct intel_crtc_state *crtc_state,
+			      const struct intel_plane_state *plane_state)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	enum plane_id plane_id = plane->id;
+	struct skl_plane_wm *wm = &crtc_state->wm.skl.raw.planes[plane_id];
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	int ret;
+
+	memset(wm, 0, sizeof(*wm));
+
+	if (!intel_wm_plane_visible(crtc_state, plane_state))
+		return 0;
+
+	ret = skl_build_plane_wm_single(crtc_state, plane_state,
+					plane, 0);
+	if (ret)
+		return ret;
+
+	if (fb->format->is_yuv && fb->format->num_planes > 1) {
+		ret = skl_build_plane_wm_uv(crtc_state, plane_state,
+					    plane);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int icl_build_plane_wm(struct intel_crtc_state *crtc_state,
+			      const struct intel_plane_state *plane_state)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	struct drm_i915_private *i915 = to_i915(plane->base.dev);
+	enum plane_id plane_id = plane->id;
+	struct skl_plane_wm *wm = &crtc_state->wm.skl.raw.planes[plane_id];
+	int ret;
+
+	/* Watermarks calculated in master */
+	if (plane_state->planar_slave)
+		return 0;
+
+	memset(wm, 0, sizeof(*wm));
+
+	if (plane_state->planar_linked_plane) {
+		const struct drm_framebuffer *fb = plane_state->hw.fb;
+
+		drm_WARN_ON(&i915->drm,
+			    !intel_wm_plane_visible(crtc_state, plane_state));
+		drm_WARN_ON(&i915->drm, !fb->format->is_yuv ||
+			    fb->format->num_planes == 1);
+
+		ret = skl_build_plane_wm_single(crtc_state, plane_state,
+						plane_state->planar_linked_plane, 0);
+		if (ret)
+			return ret;
+
+		ret = skl_build_plane_wm_single(crtc_state, plane_state,
+						plane, 1);
+		if (ret)
+			return ret;
+	} else if (intel_wm_plane_visible(crtc_state, plane_state)) {
+		ret = skl_build_plane_wm_single(crtc_state, plane_state,
+						plane, 0);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int skl_build_pipe_wm(struct intel_atomic_state *state,
+			     struct intel_crtc *crtc)
+{
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	const struct intel_plane_state *plane_state;
+	struct intel_plane *plane;
+	int ret, i;
+
+	for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
+		/*
+		 * FIXME should perhaps check {old,new}_plane_crtc->hw.crtc
+		 * instead but we don't populate that correctly for NV12 Y
+		 * planes so for now hack this.
+		 */
+		if (plane->pipe != crtc->pipe)
+			continue;
+
+		if (DISPLAY_VER(i915) >= 11)
+			ret = icl_build_plane_wm(crtc_state, plane_state);
+		else
+			ret = skl_build_plane_wm(crtc_state, plane_state);
+		if (ret)
+			return ret;
+	}
+
+	crtc_state->wm.skl.optimal = crtc_state->wm.skl.raw;
+
+	return 0;
+}
+
+static void skl_ddb_entry_write(struct drm_i915_private *i915,
+				i915_reg_t reg,
+				const struct skl_ddb_entry *entry)
+{
+	if (entry->end)
+		intel_de_write_fw(i915, reg,
+				  PLANE_BUF_END(entry->end - 1) |
+				  PLANE_BUF_START(entry->start));
+	else
+		intel_de_write_fw(i915, reg, 0);
+}
+
+static void skl_write_wm_level(struct drm_i915_private *i915,
+			       i915_reg_t reg,
+			       const struct skl_wm_level *level)
+{
+	u32 val = 0;
+
+	if (level->enable)
+		val |= PLANE_WM_EN;
+	if (level->ignore_lines)
+		val |= PLANE_WM_IGNORE_LINES;
+	val |= REG_FIELD_PREP(PLANE_WM_BLOCKS_MASK, level->blocks);
+	val |= REG_FIELD_PREP(PLANE_WM_LINES_MASK, level->lines);
+
+	intel_de_write_fw(i915, reg, val);
+}
+
+void skl_write_plane_wm(struct intel_plane *plane,
+			const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(plane->base.dev);
+	int level, max_level = ilk_wm_max_level(i915);
+	enum plane_id plane_id = plane->id;
+	enum pipe pipe = plane->pipe;
+	const struct skl_pipe_wm *pipe_wm = &crtc_state->wm.skl.optimal;
+	const struct skl_ddb_entry *ddb =
+		&crtc_state->wm.skl.plane_ddb[plane_id];
+	const struct skl_ddb_entry *ddb_y =
+		&crtc_state->wm.skl.plane_ddb_y[plane_id];
+
+	for (level = 0; level <= max_level; level++)
+		skl_write_wm_level(i915, PLANE_WM(pipe, plane_id, level),
+				   skl_plane_wm_level(pipe_wm, plane_id, level));
+
+	skl_write_wm_level(i915, PLANE_WM_TRANS(pipe, plane_id),
+			   skl_plane_trans_wm(pipe_wm, plane_id));
+
+	if (HAS_HW_SAGV_WM(i915)) {
+		const struct skl_plane_wm *wm = &pipe_wm->planes[plane_id];
+
+		skl_write_wm_level(i915, PLANE_WM_SAGV(pipe, plane_id),
+				   &wm->sagv.wm0);
+		skl_write_wm_level(i915, PLANE_WM_SAGV_TRANS(pipe, plane_id),
+				   &wm->sagv.trans_wm);
+	}
+
+	skl_ddb_entry_write(i915,
+			    PLANE_BUF_CFG(pipe, plane_id), ddb);
+
+	if (DISPLAY_VER(i915) < 11)
+		skl_ddb_entry_write(i915,
+				    PLANE_NV12_BUF_CFG(pipe, plane_id), ddb_y);
+}
+
+void skl_write_cursor_wm(struct intel_plane *plane,
+			 const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(plane->base.dev);
+	int level, max_level = ilk_wm_max_level(i915);
+	enum plane_id plane_id = plane->id;
+	enum pipe pipe = plane->pipe;
+	const struct skl_pipe_wm *pipe_wm = &crtc_state->wm.skl.optimal;
+	const struct skl_ddb_entry *ddb =
+		&crtc_state->wm.skl.plane_ddb[plane_id];
+
+	for (level = 0; level <= max_level; level++)
+		skl_write_wm_level(i915, CUR_WM(pipe, level),
+				   skl_plane_wm_level(pipe_wm, plane_id, level));
+
+	skl_write_wm_level(i915, CUR_WM_TRANS(pipe),
+			   skl_plane_trans_wm(pipe_wm, plane_id));
+
+	if (HAS_HW_SAGV_WM(i915)) {
+		const struct skl_plane_wm *wm = &pipe_wm->planes[plane_id];
+
+		skl_write_wm_level(i915, CUR_WM_SAGV(pipe),
+				   &wm->sagv.wm0);
+		skl_write_wm_level(i915, CUR_WM_SAGV_TRANS(pipe),
+				   &wm->sagv.trans_wm);
+	}
+
+	skl_ddb_entry_write(i915, CUR_BUF_CFG(pipe), ddb);
+}
+
+static bool skl_wm_level_equals(const struct skl_wm_level *l1,
+				const struct skl_wm_level *l2)
+{
+	return l1->enable == l2->enable &&
+		l1->ignore_lines == l2->ignore_lines &&
+		l1->lines == l2->lines &&
+		l1->blocks == l2->blocks;
+}
+
+static bool skl_plane_wm_equals(struct drm_i915_private *i915,
+				const struct skl_plane_wm *wm1,
+				const struct skl_plane_wm *wm2)
+{
+	int level, max_level = ilk_wm_max_level(i915);
+
+	for (level = 0; level <= max_level; level++) {
+		/*
+		 * We don't check uv_wm as the hardware doesn't actually
+		 * use it. It only gets used for calculating the required
+		 * ddb allocation.
+		 */
+		if (!skl_wm_level_equals(&wm1->wm[level], &wm2->wm[level]))
+			return false;
+	}
+
+	return skl_wm_level_equals(&wm1->trans_wm, &wm2->trans_wm) &&
+		skl_wm_level_equals(&wm1->sagv.wm0, &wm2->sagv.wm0) &&
+		skl_wm_level_equals(&wm1->sagv.trans_wm, &wm2->sagv.trans_wm);
+}
+
+static bool skl_ddb_entries_overlap(const struct skl_ddb_entry *a,
+				    const struct skl_ddb_entry *b)
+{
+	return a->start < b->end && b->start < a->end;
+}
+
+static void skl_ddb_entry_union(struct skl_ddb_entry *a,
+				const struct skl_ddb_entry *b)
+{
+	if (a->end && b->end) {
+		a->start = min(a->start, b->start);
+		a->end = max(a->end, b->end);
+	} else if (b->end) {
+		a->start = b->start;
+		a->end = b->end;
+	}
+}
+
+bool skl_ddb_allocation_overlaps(const struct skl_ddb_entry *ddb,
+				 const struct skl_ddb_entry *entries,
+				 int num_entries, int ignore_idx)
+{
+	int i;
+
+	for (i = 0; i < num_entries; i++) {
+		if (i != ignore_idx &&
+		    skl_ddb_entries_overlap(ddb, &entries[i]))
+			return true;
+	}
+
+	return false;
+}
+
+static int
+skl_ddb_add_affected_planes(const struct intel_crtc_state *old_crtc_state,
+			    struct intel_crtc_state *new_crtc_state)
+{
+	struct intel_atomic_state *state = to_intel_atomic_state(new_crtc_state->uapi.state);
+	struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	struct intel_plane *plane;
+
+	for_each_intel_plane_on_crtc(&i915->drm, crtc, plane) {
+		struct intel_plane_state *plane_state;
+		enum plane_id plane_id = plane->id;
+
+		if (skl_ddb_entry_equal(&old_crtc_state->wm.skl.plane_ddb[plane_id],
+					&new_crtc_state->wm.skl.plane_ddb[plane_id]) &&
+		    skl_ddb_entry_equal(&old_crtc_state->wm.skl.plane_ddb_y[plane_id],
+					&new_crtc_state->wm.skl.plane_ddb_y[plane_id]))
+			continue;
+
+		plane_state = intel_atomic_get_plane_state(state, plane);
+		if (IS_ERR(plane_state))
+			return PTR_ERR(plane_state);
+
+		new_crtc_state->update_planes |= BIT(plane_id);
+	}
+
+	return 0;
+}
+
+static u8 intel_dbuf_enabled_slices(const struct intel_dbuf_state *dbuf_state)
+{
+	struct drm_i915_private *i915 = to_i915(dbuf_state->base.state->base.dev);
+	u8 enabled_slices;
+	enum pipe pipe;
+
+	/*
+	 * FIXME: For now we always enable slice S1 as per
+	 * the Bspec display initialization sequence.
+	 */
+	enabled_slices = BIT(DBUF_S1);
+
+	for_each_pipe(i915, pipe)
+		enabled_slices |= dbuf_state->slices[pipe];
+
+	return enabled_slices;
+}
+
+static int
+skl_compute_ddb(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_dbuf_state *old_dbuf_state;
+	struct intel_dbuf_state *new_dbuf_state = NULL;
+	const struct intel_crtc_state *old_crtc_state;
+	struct intel_crtc_state *new_crtc_state;
+	struct intel_crtc *crtc;
+	int ret, i;
+
+	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
+		new_dbuf_state = intel_atomic_get_dbuf_state(state);
+		if (IS_ERR(new_dbuf_state))
+			return PTR_ERR(new_dbuf_state);
+
+		old_dbuf_state = intel_atomic_get_old_dbuf_state(state);
+		break;
+	}
+
+	if (!new_dbuf_state)
+		return 0;
+
+	new_dbuf_state->active_pipes =
+		intel_calc_active_pipes(state, old_dbuf_state->active_pipes);
+
+	if (old_dbuf_state->active_pipes != new_dbuf_state->active_pipes) {
+		ret = intel_atomic_lock_global_state(&new_dbuf_state->base);
+		if (ret)
+			return ret;
+	}
+
+	if (HAS_MBUS_JOINING(i915))
+		new_dbuf_state->joined_mbus =
+			adlp_check_mbus_joined(new_dbuf_state->active_pipes);
+
+	for_each_intel_crtc(&i915->drm, crtc) {
+		enum pipe pipe = crtc->pipe;
+
+		new_dbuf_state->slices[pipe] =
+			skl_compute_dbuf_slices(crtc, new_dbuf_state->active_pipes,
+						new_dbuf_state->joined_mbus);
+
+		if (old_dbuf_state->slices[pipe] == new_dbuf_state->slices[pipe])
+			continue;
+
+		ret = intel_atomic_lock_global_state(&new_dbuf_state->base);
+		if (ret)
+			return ret;
+	}
+
+	new_dbuf_state->enabled_slices = intel_dbuf_enabled_slices(new_dbuf_state);
+
+	if (old_dbuf_state->enabled_slices != new_dbuf_state->enabled_slices ||
+	    old_dbuf_state->joined_mbus != new_dbuf_state->joined_mbus) {
+		ret = intel_atomic_serialize_global_state(&new_dbuf_state->base);
+		if (ret)
+			return ret;
+
+		if (old_dbuf_state->joined_mbus != new_dbuf_state->joined_mbus) {
+			/* TODO: Implement vblank synchronized MBUS joining changes */
+			ret = intel_modeset_all_pipes(state);
+			if (ret)
+				return ret;
+		}
+
+		drm_dbg_kms(&i915->drm,
+			    "Enabled dbuf slices 0x%x -> 0x%x (total dbuf slices 0x%x), mbus joined? %s->%s\n",
+			    old_dbuf_state->enabled_slices,
+			    new_dbuf_state->enabled_slices,
+			    INTEL_INFO(i915)->display.dbuf.slice_mask,
+			    str_yes_no(old_dbuf_state->joined_mbus),
+			    str_yes_no(new_dbuf_state->joined_mbus));
+	}
+
+	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
+		enum pipe pipe = crtc->pipe;
+
+		new_dbuf_state->weight[pipe] = intel_crtc_ddb_weight(new_crtc_state);
+
+		if (old_dbuf_state->weight[pipe] == new_dbuf_state->weight[pipe])
+			continue;
+
+		ret = intel_atomic_lock_global_state(&new_dbuf_state->base);
+		if (ret)
+			return ret;
+	}
+
+	for_each_intel_crtc(&i915->drm, crtc) {
+		ret = skl_crtc_allocate_ddb(state, crtc);
+		if (ret)
+			return ret;
+	}
+
+	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
+					    new_crtc_state, i) {
+		ret = skl_crtc_allocate_plane_ddb(state, crtc);
+		if (ret)
+			return ret;
+
+		ret = skl_ddb_add_affected_planes(old_crtc_state,
+						  new_crtc_state);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static char enast(bool enable)
+{
+	return enable ? '*' : ' ';
+}
+
+static void
+skl_print_wm_changes(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_crtc_state *old_crtc_state;
+	const struct intel_crtc_state *new_crtc_state;
+	struct intel_plane *plane;
+	struct intel_crtc *crtc;
+	int i;
+
+	if (!drm_debug_enabled(DRM_UT_KMS))
+		return;
+
+	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
+					    new_crtc_state, i) {
+		const struct skl_pipe_wm *old_pipe_wm, *new_pipe_wm;
+
+		old_pipe_wm = &old_crtc_state->wm.skl.optimal;
+		new_pipe_wm = &new_crtc_state->wm.skl.optimal;
+
+		for_each_intel_plane_on_crtc(&i915->drm, crtc, plane) {
+			enum plane_id plane_id = plane->id;
+			const struct skl_ddb_entry *old, *new;
+
+			old = &old_crtc_state->wm.skl.plane_ddb[plane_id];
+			new = &new_crtc_state->wm.skl.plane_ddb[plane_id];
+
+			if (skl_ddb_entry_equal(old, new))
+				continue;
+
+			drm_dbg_kms(&i915->drm,
+				    "[PLANE:%d:%s] ddb (%4d - %4d) -> (%4d - %4d), size %4d -> %4d\n",
+				    plane->base.base.id, plane->base.name,
+				    old->start, old->end, new->start, new->end,
+				    skl_ddb_entry_size(old), skl_ddb_entry_size(new));
+		}
+
+		for_each_intel_plane_on_crtc(&i915->drm, crtc, plane) {
+			enum plane_id plane_id = plane->id;
+			const struct skl_plane_wm *old_wm, *new_wm;
+
+			old_wm = &old_pipe_wm->planes[plane_id];
+			new_wm = &new_pipe_wm->planes[plane_id];
+
+			if (skl_plane_wm_equals(i915, old_wm, new_wm))
+				continue;
+
+			drm_dbg_kms(&i915->drm,
+				    "[PLANE:%d:%s]   level %cwm0,%cwm1,%cwm2,%cwm3,%cwm4,%cwm5,%cwm6,%cwm7,%ctwm,%cswm,%cstwm"
+				    " -> %cwm0,%cwm1,%cwm2,%cwm3,%cwm4,%cwm5,%cwm6,%cwm7,%ctwm,%cswm,%cstwm\n",
+				    plane->base.base.id, plane->base.name,
+				    enast(old_wm->wm[0].enable), enast(old_wm->wm[1].enable),
+				    enast(old_wm->wm[2].enable), enast(old_wm->wm[3].enable),
+				    enast(old_wm->wm[4].enable), enast(old_wm->wm[5].enable),
+				    enast(old_wm->wm[6].enable), enast(old_wm->wm[7].enable),
+				    enast(old_wm->trans_wm.enable),
+				    enast(old_wm->sagv.wm0.enable),
+				    enast(old_wm->sagv.trans_wm.enable),
+				    enast(new_wm->wm[0].enable), enast(new_wm->wm[1].enable),
+				    enast(new_wm->wm[2].enable), enast(new_wm->wm[3].enable),
+				    enast(new_wm->wm[4].enable), enast(new_wm->wm[5].enable),
+				    enast(new_wm->wm[6].enable), enast(new_wm->wm[7].enable),
+				    enast(new_wm->trans_wm.enable),
+				    enast(new_wm->sagv.wm0.enable),
+				    enast(new_wm->sagv.trans_wm.enable));
+
+			drm_dbg_kms(&i915->drm,
+				    "[PLANE:%d:%s]   lines %c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%4d"
+				      " -> %c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%4d\n",
+				    plane->base.base.id, plane->base.name,
+				    enast(old_wm->wm[0].ignore_lines), old_wm->wm[0].lines,
+				    enast(old_wm->wm[1].ignore_lines), old_wm->wm[1].lines,
+				    enast(old_wm->wm[2].ignore_lines), old_wm->wm[2].lines,
+				    enast(old_wm->wm[3].ignore_lines), old_wm->wm[3].lines,
+				    enast(old_wm->wm[4].ignore_lines), old_wm->wm[4].lines,
+				    enast(old_wm->wm[5].ignore_lines), old_wm->wm[5].lines,
+				    enast(old_wm->wm[6].ignore_lines), old_wm->wm[6].lines,
+				    enast(old_wm->wm[7].ignore_lines), old_wm->wm[7].lines,
+				    enast(old_wm->trans_wm.ignore_lines), old_wm->trans_wm.lines,
+				    enast(old_wm->sagv.wm0.ignore_lines), old_wm->sagv.wm0.lines,
+				    enast(old_wm->sagv.trans_wm.ignore_lines), old_wm->sagv.trans_wm.lines,
+				    enast(new_wm->wm[0].ignore_lines), new_wm->wm[0].lines,
+				    enast(new_wm->wm[1].ignore_lines), new_wm->wm[1].lines,
+				    enast(new_wm->wm[2].ignore_lines), new_wm->wm[2].lines,
+				    enast(new_wm->wm[3].ignore_lines), new_wm->wm[3].lines,
+				    enast(new_wm->wm[4].ignore_lines), new_wm->wm[4].lines,
+				    enast(new_wm->wm[5].ignore_lines), new_wm->wm[5].lines,
+				    enast(new_wm->wm[6].ignore_lines), new_wm->wm[6].lines,
+				    enast(new_wm->wm[7].ignore_lines), new_wm->wm[7].lines,
+				    enast(new_wm->trans_wm.ignore_lines), new_wm->trans_wm.lines,
+				    enast(new_wm->sagv.wm0.ignore_lines), new_wm->sagv.wm0.lines,
+				    enast(new_wm->sagv.trans_wm.ignore_lines), new_wm->sagv.trans_wm.lines);
+
+			drm_dbg_kms(&i915->drm,
+				    "[PLANE:%d:%s]  blocks %4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%5d"
+				    " -> %4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%5d\n",
+				    plane->base.base.id, plane->base.name,
+				    old_wm->wm[0].blocks, old_wm->wm[1].blocks,
+				    old_wm->wm[2].blocks, old_wm->wm[3].blocks,
+				    old_wm->wm[4].blocks, old_wm->wm[5].blocks,
+				    old_wm->wm[6].blocks, old_wm->wm[7].blocks,
+				    old_wm->trans_wm.blocks,
+				    old_wm->sagv.wm0.blocks,
+				    old_wm->sagv.trans_wm.blocks,
+				    new_wm->wm[0].blocks, new_wm->wm[1].blocks,
+				    new_wm->wm[2].blocks, new_wm->wm[3].blocks,
+				    new_wm->wm[4].blocks, new_wm->wm[5].blocks,
+				    new_wm->wm[6].blocks, new_wm->wm[7].blocks,
+				    new_wm->trans_wm.blocks,
+				    new_wm->sagv.wm0.blocks,
+				    new_wm->sagv.trans_wm.blocks);
+
+			drm_dbg_kms(&i915->drm,
+				    "[PLANE:%d:%s] min_ddb %4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%5d"
+				    " -> %4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%5d\n",
+				    plane->base.base.id, plane->base.name,
+				    old_wm->wm[0].min_ddb_alloc, old_wm->wm[1].min_ddb_alloc,
+				    old_wm->wm[2].min_ddb_alloc, old_wm->wm[3].min_ddb_alloc,
+				    old_wm->wm[4].min_ddb_alloc, old_wm->wm[5].min_ddb_alloc,
+				    old_wm->wm[6].min_ddb_alloc, old_wm->wm[7].min_ddb_alloc,
+				    old_wm->trans_wm.min_ddb_alloc,
+				    old_wm->sagv.wm0.min_ddb_alloc,
+				    old_wm->sagv.trans_wm.min_ddb_alloc,
+				    new_wm->wm[0].min_ddb_alloc, new_wm->wm[1].min_ddb_alloc,
+				    new_wm->wm[2].min_ddb_alloc, new_wm->wm[3].min_ddb_alloc,
+				    new_wm->wm[4].min_ddb_alloc, new_wm->wm[5].min_ddb_alloc,
+				    new_wm->wm[6].min_ddb_alloc, new_wm->wm[7].min_ddb_alloc,
+				    new_wm->trans_wm.min_ddb_alloc,
+				    new_wm->sagv.wm0.min_ddb_alloc,
+				    new_wm->sagv.trans_wm.min_ddb_alloc);
+		}
+	}
+}
+
+static bool skl_plane_selected_wm_equals(struct intel_plane *plane,
+					 const struct skl_pipe_wm *old_pipe_wm,
+					 const struct skl_pipe_wm *new_pipe_wm)
+{
+	struct drm_i915_private *i915 = to_i915(plane->base.dev);
+	int level, max_level = ilk_wm_max_level(i915);
+
+	for (level = 0; level <= max_level; level++) {
+		/*
+		 * We don't check uv_wm as the hardware doesn't actually
+		 * use it. It only gets used for calculating the required
+		 * ddb allocation.
+		 */
+		if (!skl_wm_level_equals(skl_plane_wm_level(old_pipe_wm, plane->id, level),
+					 skl_plane_wm_level(new_pipe_wm, plane->id, level)))
+			return false;
+	}
+
+	if (HAS_HW_SAGV_WM(i915)) {
+		const struct skl_plane_wm *old_wm = &old_pipe_wm->planes[plane->id];
+		const struct skl_plane_wm *new_wm = &new_pipe_wm->planes[plane->id];
+
+		if (!skl_wm_level_equals(&old_wm->sagv.wm0, &new_wm->sagv.wm0) ||
+		    !skl_wm_level_equals(&old_wm->sagv.trans_wm, &new_wm->sagv.trans_wm))
+			return false;
+	}
+
+	return skl_wm_level_equals(skl_plane_trans_wm(old_pipe_wm, plane->id),
+				   skl_plane_trans_wm(new_pipe_wm, plane->id));
+}
+
+/*
+ * To make sure the cursor watermark registers are always consistent
+ * with our computed state the following scenario needs special
+ * treatment:
+ *
+ * 1. enable cursor
+ * 2. move cursor entirely offscreen
+ * 3. disable cursor
+ *
+ * Step 2. does call .disable_plane() but does not zero the watermarks
+ * (since we consider an offscreen cursor still active for the purposes
+ * of watermarks). Step 3. would not normally call .disable_plane()
+ * because the actual plane visibility isn't changing, and we don't
+ * deallocate the cursor ddb until the pipe gets disabled. So we must
+ * force step 3. to call .disable_plane() to update the watermark
+ * registers properly.
+ *
+ * Other planes do not suffer from this issues as their watermarks are
+ * calculated based on the actual plane visibility. The only time this
+ * can trigger for the other planes is during the initial readout as the
+ * default value of the watermarks registers is not zero.
+ */
+static int skl_wm_add_affected_planes(struct intel_atomic_state *state,
+				      struct intel_crtc *crtc)
+{
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	const struct intel_crtc_state *old_crtc_state =
+		intel_atomic_get_old_crtc_state(state, crtc);
+	struct intel_crtc_state *new_crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	struct intel_plane *plane;
+
+	for_each_intel_plane_on_crtc(&i915->drm, crtc, plane) {
+		struct intel_plane_state *plane_state;
+		enum plane_id plane_id = plane->id;
+
+		/*
+		 * Force a full wm update for every plane on modeset.
+		 * Required because the reset value of the wm registers
+		 * is non-zero, whereas we want all disabled planes to
+		 * have zero watermarks. So if we turn off the relevant
+		 * power well the hardware state will go out of sync
+		 * with the software state.
+		 */
+		if (!drm_atomic_crtc_needs_modeset(&new_crtc_state->uapi) &&
+		    skl_plane_selected_wm_equals(plane,
+						 &old_crtc_state->wm.skl.optimal,
+						 &new_crtc_state->wm.skl.optimal))
+			continue;
+
+		plane_state = intel_atomic_get_plane_state(state, plane);
+		if (IS_ERR(plane_state))
+			return PTR_ERR(plane_state);
+
+		new_crtc_state->update_planes |= BIT(plane_id);
+	}
+
+	return 0;
+}
+
+static int
+skl_compute_wm(struct intel_atomic_state *state)
+{
+	struct intel_crtc *crtc;
+	struct intel_crtc_state *new_crtc_state;
+	int ret, i;
+
+	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
+		ret = skl_build_pipe_wm(state, crtc);
+		if (ret)
+			return ret;
+	}
+
+	ret = skl_compute_ddb(state);
+	if (ret)
+		return ret;
+
+	ret = intel_compute_sagv_mask(state);
+	if (ret)
+		return ret;
+
+	/*
+	 * skl_compute_ddb() will have adjusted the final watermarks
+	 * based on how much ddb is available. Now we can actually
+	 * check if the final watermarks changed.
+	 */
+	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
+		ret = skl_wm_add_affected_planes(state, crtc);
+		if (ret)
+			return ret;
+	}
+
+	skl_print_wm_changes(state);
+
+	return 0;
+}
+
+static void skl_wm_level_from_reg_val(u32 val, struct skl_wm_level *level)
+{
+	level->enable = val & PLANE_WM_EN;
+	level->ignore_lines = val & PLANE_WM_IGNORE_LINES;
+	level->blocks = REG_FIELD_GET(PLANE_WM_BLOCKS_MASK, val);
+	level->lines = REG_FIELD_GET(PLANE_WM_LINES_MASK, val);
+}
+
+static void skl_pipe_wm_get_hw_state(struct intel_crtc *crtc,
+				     struct skl_pipe_wm *out)
+{
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+	int level, max_level;
+	enum plane_id plane_id;
+	u32 val;
+
+	max_level = ilk_wm_max_level(i915);
+
+	for_each_plane_id_on_crtc(crtc, plane_id) {
+		struct skl_plane_wm *wm = &out->planes[plane_id];
+
+		for (level = 0; level <= max_level; level++) {
+			if (plane_id != PLANE_CURSOR)
+				val = intel_uncore_read(&i915->uncore, PLANE_WM(pipe, plane_id, level));
+			else
+				val = intel_uncore_read(&i915->uncore, CUR_WM(pipe, level));
+
+			skl_wm_level_from_reg_val(val, &wm->wm[level]);
+		}
+
+		if (plane_id != PLANE_CURSOR)
+			val = intel_uncore_read(&i915->uncore, PLANE_WM_TRANS(pipe, plane_id));
+		else
+			val = intel_uncore_read(&i915->uncore, CUR_WM_TRANS(pipe));
+
+		skl_wm_level_from_reg_val(val, &wm->trans_wm);
+
+		if (HAS_HW_SAGV_WM(i915)) {
+			if (plane_id != PLANE_CURSOR)
+				val = intel_uncore_read(&i915->uncore,
+							PLANE_WM_SAGV(pipe, plane_id));
+			else
+				val = intel_uncore_read(&i915->uncore,
+							CUR_WM_SAGV(pipe));
+
+			skl_wm_level_from_reg_val(val, &wm->sagv.wm0);
+
+			if (plane_id != PLANE_CURSOR)
+				val = intel_uncore_read(&i915->uncore,
+							PLANE_WM_SAGV_TRANS(pipe, plane_id));
+			else
+				val = intel_uncore_read(&i915->uncore,
+							CUR_WM_SAGV_TRANS(pipe));
+
+			skl_wm_level_from_reg_val(val, &wm->sagv.trans_wm);
+		} else if (DISPLAY_VER(i915) >= 12) {
+			wm->sagv.wm0 = wm->wm[0];
+			wm->sagv.trans_wm = wm->trans_wm;
+		}
+	}
+}
+
+void skl_wm_get_hw_state(struct drm_i915_private *i915)
+{
+	struct intel_dbuf_state *dbuf_state =
+		to_intel_dbuf_state(i915->display.dbuf.obj.state);
+	struct intel_crtc *crtc;
+
+	if (HAS_MBUS_JOINING(i915))
+		dbuf_state->joined_mbus = intel_de_read(i915, MBUS_CTL) & MBUS_JOIN;
+
+	for_each_intel_crtc(&i915->drm, crtc) {
+		struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+		enum pipe pipe = crtc->pipe;
+		unsigned int mbus_offset;
+		enum plane_id plane_id;
+		u8 slices;
+
+		memset(&crtc_state->wm.skl.optimal, 0,
+		       sizeof(crtc_state->wm.skl.optimal));
+		if (crtc_state->hw.active)
+			skl_pipe_wm_get_hw_state(crtc, &crtc_state->wm.skl.optimal);
+		crtc_state->wm.skl.raw = crtc_state->wm.skl.optimal;
+
+		memset(&dbuf_state->ddb[pipe], 0, sizeof(dbuf_state->ddb[pipe]));
+
+		for_each_plane_id_on_crtc(crtc, plane_id) {
+			struct skl_ddb_entry *ddb =
+				&crtc_state->wm.skl.plane_ddb[plane_id];
+			struct skl_ddb_entry *ddb_y =
+				&crtc_state->wm.skl.plane_ddb_y[plane_id];
+
+			if (!crtc_state->hw.active)
+				continue;
+
+			skl_ddb_get_hw_plane_state(i915, crtc->pipe,
+						   plane_id, ddb, ddb_y);
+
+			skl_ddb_entry_union(&dbuf_state->ddb[pipe], ddb);
+			skl_ddb_entry_union(&dbuf_state->ddb[pipe], ddb_y);
+		}
+
+		dbuf_state->weight[pipe] = intel_crtc_ddb_weight(crtc_state);
+
+		/*
+		 * Used for checking overlaps, so we need absolute
+		 * offsets instead of MBUS relative offsets.
+		 */
+		slices = skl_compute_dbuf_slices(crtc, dbuf_state->active_pipes,
+						 dbuf_state->joined_mbus);
+		mbus_offset = mbus_ddb_offset(i915, slices);
+		crtc_state->wm.skl.ddb.start = mbus_offset + dbuf_state->ddb[pipe].start;
+		crtc_state->wm.skl.ddb.end = mbus_offset + dbuf_state->ddb[pipe].end;
+
+		/* The slices actually used by the planes on the pipe */
+		dbuf_state->slices[pipe] =
+			skl_ddb_dbuf_slice_mask(i915, &crtc_state->wm.skl.ddb);
+
+		drm_dbg_kms(&i915->drm,
+			    "[CRTC:%d:%s] dbuf slices 0x%x, ddb (%d - %d), active pipes 0x%x, mbus joined: %s\n",
+			    crtc->base.base.id, crtc->base.name,
+			    dbuf_state->slices[pipe], dbuf_state->ddb[pipe].start,
+			    dbuf_state->ddb[pipe].end, dbuf_state->active_pipes,
+			    str_yes_no(dbuf_state->joined_mbus));
+	}
+
+	dbuf_state->enabled_slices = i915->display.dbuf.enabled_slices;
+}
+
+static bool skl_dbuf_is_misconfigured(struct drm_i915_private *i915)
+{
+	const struct intel_dbuf_state *dbuf_state =
+		to_intel_dbuf_state(i915->display.dbuf.obj.state);
+	struct skl_ddb_entry entries[I915_MAX_PIPES] = {};
+	struct intel_crtc *crtc;
+
+	for_each_intel_crtc(&i915->drm, crtc) {
+		const struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+
+		entries[crtc->pipe] = crtc_state->wm.skl.ddb;
+	}
+
+	for_each_intel_crtc(&i915->drm, crtc) {
+		const struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+		u8 slices;
+
+		slices = skl_compute_dbuf_slices(crtc, dbuf_state->active_pipes,
+						 dbuf_state->joined_mbus);
+		if (dbuf_state->slices[crtc->pipe] & ~slices)
+			return true;
+
+		if (skl_ddb_allocation_overlaps(&crtc_state->wm.skl.ddb, entries,
+						I915_MAX_PIPES, crtc->pipe))
+			return true;
+	}
+
+	return false;
+}
+
+void skl_wm_sanitize(struct drm_i915_private *i915)
+{
+	struct intel_crtc *crtc;
+
+	/*
+	 * On TGL/RKL (at least) the BIOS likes to assign the planes
+	 * to the wrong DBUF slices. This will cause an infinite loop
+	 * in skl_commit_modeset_enables() as it can't find a way to
+	 * transition between the old bogus DBUF layout to the new
+	 * proper DBUF layout without DBUF allocation overlaps between
+	 * the planes (which cannot be allowed or else the hardware
+	 * may hang). If we detect a bogus DBUF layout just turn off
+	 * all the planes so that skl_commit_modeset_enables() can
+	 * simply ignore them.
+	 */
+	if (!skl_dbuf_is_misconfigured(i915))
+		return;
+
+	drm_dbg_kms(&i915->drm, "BIOS has misprogrammed the DBUF, disabling all planes\n");
+
+	for_each_intel_crtc(&i915->drm, crtc) {
+		struct intel_plane *plane = to_intel_plane(crtc->base.primary);
+		const struct intel_plane_state *plane_state =
+			to_intel_plane_state(plane->base.state);
+		struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+
+		if (plane_state->uapi.visible)
+			intel_plane_disable_noatomic(crtc, plane);
+
+		drm_WARN_ON(&i915->drm, crtc_state->active_planes != 0);
+
+		memset(&crtc_state->wm.skl.ddb, 0, sizeof(crtc_state->wm.skl.ddb));
+	}
+}
+
+void intel_wm_state_verify(struct intel_crtc *crtc,
+			   struct intel_crtc_state *new_crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	struct skl_hw_state {
+		struct skl_ddb_entry ddb[I915_MAX_PLANES];
+		struct skl_ddb_entry ddb_y[I915_MAX_PLANES];
+		struct skl_pipe_wm wm;
+	} *hw;
+	const struct skl_pipe_wm *sw_wm = &new_crtc_state->wm.skl.optimal;
+	int level, max_level = ilk_wm_max_level(i915);
+	struct intel_plane *plane;
+	u8 hw_enabled_slices;
+
+	if (DISPLAY_VER(i915) < 9 || !new_crtc_state->hw.active)
+		return;
+
+	hw = kzalloc(sizeof(*hw), GFP_KERNEL);
+	if (!hw)
+		return;
+
+	skl_pipe_wm_get_hw_state(crtc, &hw->wm);
+
+	skl_pipe_ddb_get_hw_state(crtc, hw->ddb, hw->ddb_y);
+
+	hw_enabled_slices = intel_enabled_dbuf_slices_mask(i915);
+
+	if (DISPLAY_VER(i915) >= 11 &&
+	    hw_enabled_slices != i915->display.dbuf.enabled_slices)
+		drm_err(&i915->drm,
+			"mismatch in DBUF Slices (expected 0x%x, got 0x%x)\n",
+			i915->display.dbuf.enabled_slices,
+			hw_enabled_slices);
+
+	for_each_intel_plane_on_crtc(&i915->drm, crtc, plane) {
+		const struct skl_ddb_entry *hw_ddb_entry, *sw_ddb_entry;
+		const struct skl_wm_level *hw_wm_level, *sw_wm_level;
+
+		/* Watermarks */
+		for (level = 0; level <= max_level; level++) {
+			hw_wm_level = &hw->wm.planes[plane->id].wm[level];
+			sw_wm_level = skl_plane_wm_level(sw_wm, plane->id, level);
+
+			if (skl_wm_level_equals(hw_wm_level, sw_wm_level))
+				continue;
+
+			drm_err(&i915->drm,
+				"[PLANE:%d:%s] mismatch in WM%d (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n",
+				plane->base.base.id, plane->base.name, level,
+				sw_wm_level->enable,
+				sw_wm_level->blocks,
+				sw_wm_level->lines,
+				hw_wm_level->enable,
+				hw_wm_level->blocks,
+				hw_wm_level->lines);
+		}
+
+		hw_wm_level = &hw->wm.planes[plane->id].trans_wm;
+		sw_wm_level = skl_plane_trans_wm(sw_wm, plane->id);
+
+		if (!skl_wm_level_equals(hw_wm_level, sw_wm_level)) {
+			drm_err(&i915->drm,
+				"[PLANE:%d:%s] mismatch in trans WM (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n",
+				plane->base.base.id, plane->base.name,
+				sw_wm_level->enable,
+				sw_wm_level->blocks,
+				sw_wm_level->lines,
+				hw_wm_level->enable,
+				hw_wm_level->blocks,
+				hw_wm_level->lines);
+		}
+
+		hw_wm_level = &hw->wm.planes[plane->id].sagv.wm0;
+		sw_wm_level = &sw_wm->planes[plane->id].sagv.wm0;
+
+		if (HAS_HW_SAGV_WM(i915) &&
+		    !skl_wm_level_equals(hw_wm_level, sw_wm_level)) {
+			drm_err(&i915->drm,
+				"[PLANE:%d:%s] mismatch in SAGV WM (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n",
+				plane->base.base.id, plane->base.name,
+				sw_wm_level->enable,
+				sw_wm_level->blocks,
+				sw_wm_level->lines,
+				hw_wm_level->enable,
+				hw_wm_level->blocks,
+				hw_wm_level->lines);
+		}
+
+		hw_wm_level = &hw->wm.planes[plane->id].sagv.trans_wm;
+		sw_wm_level = &sw_wm->planes[plane->id].sagv.trans_wm;
+
+		if (HAS_HW_SAGV_WM(i915) &&
+		    !skl_wm_level_equals(hw_wm_level, sw_wm_level)) {
+			drm_err(&i915->drm,
+				"[PLANE:%d:%s] mismatch in SAGV trans WM (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n",
+				plane->base.base.id, plane->base.name,
+				sw_wm_level->enable,
+				sw_wm_level->blocks,
+				sw_wm_level->lines,
+				hw_wm_level->enable,
+				hw_wm_level->blocks,
+				hw_wm_level->lines);
+		}
+
+		/* DDB */
+		hw_ddb_entry = &hw->ddb[PLANE_CURSOR];
+		sw_ddb_entry = &new_crtc_state->wm.skl.plane_ddb[PLANE_CURSOR];
+
+		if (!skl_ddb_entry_equal(hw_ddb_entry, sw_ddb_entry)) {
+			drm_err(&i915->drm,
+				"[PLANE:%d:%s] mismatch in DDB (expected (%u,%u), found (%u,%u))\n",
+				plane->base.base.id, plane->base.name,
+				sw_ddb_entry->start, sw_ddb_entry->end,
+				hw_ddb_entry->start, hw_ddb_entry->end);
+		}
+	}
+
+	kfree(hw);
+}
+
+bool skl_watermark_ipc_enabled(struct drm_i915_private *i915)
+{
+	return i915->display.wm.ipc_enabled;
+}
+
+void skl_watermark_ipc_update(struct drm_i915_private *i915)
+{
+	if (!HAS_IPC(i915))
+		return;
+
+	intel_uncore_rmw(&i915->uncore, DISP_ARB_CTL2, DISP_IPC_ENABLE,
+			 skl_watermark_ipc_enabled(i915) ? DISP_IPC_ENABLE : 0);
+}
+
+static bool skl_watermark_ipc_can_enable(struct drm_i915_private *i915)
+{
+	/* Display WA #0477 WaDisableIPC: skl */
+	if (IS_SKYLAKE(i915))
+		return false;
+
+	/* Display WA #1141: SKL:all KBL:all CFL */
+	if (IS_KABYLAKE(i915) ||
+	    IS_COFFEELAKE(i915) ||
+	    IS_COMETLAKE(i915))
+		return i915->dram_info.symmetric_memory;
+
+	return true;
+}
+
+void skl_watermark_ipc_init(struct drm_i915_private *i915)
+{
+	if (!HAS_IPC(i915))
+		return;
+
+	i915->display.wm.ipc_enabled = skl_watermark_ipc_can_enable(i915);
+
+	skl_watermark_ipc_update(i915);
+}
+
+static void
+adjust_wm_latency(struct drm_i915_private *i915,
+		  u16 wm[], int max_level, int read_latency)
+{
+	bool wm_lv_0_adjust_needed = i915->dram_info.wm_lv_0_adjust_needed;
+	int i, level;
+
+	/*
+	 * If a level n (n > 1) has a 0us latency, all levels m (m >= n)
+	 * need to be disabled. We make sure to sanitize the values out
+	 * of the punit to satisfy this requirement.
+	 */
+	for (level = 1; level <= max_level; level++) {
+		if (wm[level] == 0) {
+			for (i = level + 1; i <= max_level; i++)
+				wm[i] = 0;
+
+			max_level = level - 1;
+			break;
+		}
+	}
+
+	/*
+	 * WaWmMemoryReadLatency
+	 *
+	 * punit doesn't take into account the read latency so we need
+	 * to add proper adjustement to each valid level we retrieve
+	 * from the punit when level 0 response data is 0us.
+	 */
+	if (wm[0] == 0) {
+		for (level = 0; level <= max_level; level++)
+			wm[level] += read_latency;
+	}
+
+	/*
+	 * WA Level-0 adjustment for 16GB DIMMs: SKL+
+	 * If we could not get dimm info enable this WA to prevent from
+	 * any underrun. If not able to get Dimm info assume 16GB dimm
+	 * to avoid any underrun.
+	 */
+	if (wm_lv_0_adjust_needed)
+		wm[0] += 1;
+}
+
+static void mtl_read_wm_latency(struct drm_i915_private *i915, u16 wm[])
+{
+	struct intel_uncore *uncore = &i915->uncore;
+	int max_level = ilk_wm_max_level(i915);
+	u32 val;
+
+	val = intel_uncore_read(uncore, MTL_LATENCY_LP0_LP1);
+	wm[0] = REG_FIELD_GET(MTL_LATENCY_LEVEL_EVEN_MASK, val);
+	wm[1] = REG_FIELD_GET(MTL_LATENCY_LEVEL_ODD_MASK, val);
+
+	val = intel_uncore_read(uncore, MTL_LATENCY_LP2_LP3);
+	wm[2] = REG_FIELD_GET(MTL_LATENCY_LEVEL_EVEN_MASK, val);
+	wm[3] = REG_FIELD_GET(MTL_LATENCY_LEVEL_ODD_MASK, val);
+
+	val = intel_uncore_read(uncore, MTL_LATENCY_LP4_LP5);
+	wm[4] = REG_FIELD_GET(MTL_LATENCY_LEVEL_EVEN_MASK, val);
+	wm[5] = REG_FIELD_GET(MTL_LATENCY_LEVEL_ODD_MASK, val);
+
+	adjust_wm_latency(i915, wm, max_level, 6);
+}
+
+static void skl_read_wm_latency(struct drm_i915_private *i915, u16 wm[])
+{
+	int max_level = ilk_wm_max_level(i915);
+	int read_latency = DISPLAY_VER(i915) >= 12 ? 3 : 2;
+	int mult = IS_DG2(i915) ? 2 : 1;
+	u32 val;
+	int ret;
+
+	/* read the first set of memory latencies[0:3] */
+	val = 0; /* data0 to be programmed to 0 for first set */
+	ret = snb_pcode_read(&i915->uncore, GEN9_PCODE_READ_MEM_LATENCY, &val, NULL);
+	if (ret) {
+		drm_err(&i915->drm, "SKL Mailbox read error = %d\n", ret);
+		return;
+	}
+
+	wm[0] = REG_FIELD_GET(GEN9_MEM_LATENCY_LEVEL_0_4_MASK, val) * mult;
+	wm[1] = REG_FIELD_GET(GEN9_MEM_LATENCY_LEVEL_1_5_MASK, val) * mult;
+	wm[2] = REG_FIELD_GET(GEN9_MEM_LATENCY_LEVEL_2_6_MASK, val) * mult;
+	wm[3] = REG_FIELD_GET(GEN9_MEM_LATENCY_LEVEL_3_7_MASK, val) * mult;
+
+	/* read the second set of memory latencies[4:7] */
+	val = 1; /* data0 to be programmed to 1 for second set */
+	ret = snb_pcode_read(&i915->uncore, GEN9_PCODE_READ_MEM_LATENCY, &val, NULL);
+	if (ret) {
+		drm_err(&i915->drm, "SKL Mailbox read error = %d\n", ret);
+		return;
+	}
+
+	wm[4] = REG_FIELD_GET(GEN9_MEM_LATENCY_LEVEL_0_4_MASK, val) * mult;
+	wm[5] = REG_FIELD_GET(GEN9_MEM_LATENCY_LEVEL_1_5_MASK, val) * mult;
+	wm[6] = REG_FIELD_GET(GEN9_MEM_LATENCY_LEVEL_2_6_MASK, val) * mult;
+	wm[7] = REG_FIELD_GET(GEN9_MEM_LATENCY_LEVEL_3_7_MASK, val) * mult;
+
+	adjust_wm_latency(i915, wm, max_level, read_latency);
+}
+
+static void skl_setup_wm_latency(struct drm_i915_private *i915)
+{
+	if (DISPLAY_VER(i915) >= 14)
+		mtl_read_wm_latency(i915, i915->display.wm.skl_latency);
+	else
+		skl_read_wm_latency(i915, i915->display.wm.skl_latency);
+
+	intel_print_wm_latency(i915, "Gen9 Plane", i915->display.wm.skl_latency);
+}
+
+static const struct intel_wm_funcs skl_wm_funcs = {
+	.compute_global_watermarks = skl_compute_wm,
+};
+
+void skl_wm_init(struct drm_i915_private *i915)
+{
+	intel_sagv_init(i915);
+
+	skl_setup_wm_latency(i915);
+
+	i915->display.funcs.wm = &skl_wm_funcs;
+}
+
+static struct intel_global_state *intel_dbuf_duplicate_state(struct intel_global_obj *obj)
+{
+	struct intel_dbuf_state *dbuf_state;
+
+	dbuf_state = kmemdup(obj->state, sizeof(*dbuf_state), GFP_KERNEL);
+	if (!dbuf_state)
+		return NULL;
+
+	return &dbuf_state->base;
+}
+
+static void intel_dbuf_destroy_state(struct intel_global_obj *obj,
+				     struct intel_global_state *state)
+{
+	kfree(state);
+}
+
+static const struct intel_global_state_funcs intel_dbuf_funcs = {
+	.atomic_duplicate_state = intel_dbuf_duplicate_state,
+	.atomic_destroy_state = intel_dbuf_destroy_state,
+};
+
+struct intel_dbuf_state *
+intel_atomic_get_dbuf_state(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	struct intel_global_state *dbuf_state;
+
+	dbuf_state = intel_atomic_get_global_obj_state(state, &i915->display.dbuf.obj);
+	if (IS_ERR(dbuf_state))
+		return ERR_CAST(dbuf_state);
+
+	return to_intel_dbuf_state(dbuf_state);
+}
+
+int intel_dbuf_init(struct drm_i915_private *i915)
+{
+	struct intel_dbuf_state *dbuf_state;
+
+	dbuf_state = kzalloc(sizeof(*dbuf_state), GFP_KERNEL);
+	if (!dbuf_state)
+		return -ENOMEM;
+
+	intel_atomic_global_obj_init(i915, &i915->display.dbuf.obj,
+				     &dbuf_state->base, &intel_dbuf_funcs);
+
+	return 0;
+}
+
+/*
+ * Configure MBUS_CTL and all DBUF_CTL_S of each slice to join_mbus state before
+ * update the request state of all DBUS slices.
+ */
+static void update_mbus_pre_enable(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	u32 mbus_ctl, dbuf_min_tracker_val;
+	enum dbuf_slice slice;
+	const struct intel_dbuf_state *dbuf_state =
+		intel_atomic_get_new_dbuf_state(state);
+
+	if (!HAS_MBUS_JOINING(i915))
+		return;
+
+	/*
+	 * TODO: Implement vblank synchronized MBUS joining changes.
+	 * Must be properly coordinated with dbuf reprogramming.
+	 */
+	if (dbuf_state->joined_mbus) {
+		mbus_ctl = MBUS_HASHING_MODE_1x4 | MBUS_JOIN |
+			MBUS_JOIN_PIPE_SELECT_NONE;
+		dbuf_min_tracker_val = DBUF_MIN_TRACKER_STATE_SERVICE(3);
+	} else {
+		mbus_ctl = MBUS_HASHING_MODE_2x2 |
+			MBUS_JOIN_PIPE_SELECT_NONE;
+		dbuf_min_tracker_val = DBUF_MIN_TRACKER_STATE_SERVICE(1);
+	}
+
+	intel_de_rmw(i915, MBUS_CTL,
+		     MBUS_HASHING_MODE_MASK | MBUS_JOIN |
+		     MBUS_JOIN_PIPE_SELECT_MASK, mbus_ctl);
+
+	for_each_dbuf_slice(i915, slice)
+		intel_de_rmw(i915, DBUF_CTL_S(slice),
+			     DBUF_MIN_TRACKER_STATE_SERVICE_MASK,
+			     dbuf_min_tracker_val);
+}
+
+void intel_dbuf_pre_plane_update(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_dbuf_state *new_dbuf_state =
+		intel_atomic_get_new_dbuf_state(state);
+	const struct intel_dbuf_state *old_dbuf_state =
+		intel_atomic_get_old_dbuf_state(state);
+
+	if (!new_dbuf_state ||
+	    (new_dbuf_state->enabled_slices == old_dbuf_state->enabled_slices &&
+	     new_dbuf_state->joined_mbus == old_dbuf_state->joined_mbus))
+		return;
+
+	WARN_ON(!new_dbuf_state->base.changed);
+
+	update_mbus_pre_enable(state);
+	gen9_dbuf_slices_update(i915,
+				old_dbuf_state->enabled_slices |
+				new_dbuf_state->enabled_slices);
+}
+
+void intel_dbuf_post_plane_update(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_dbuf_state *new_dbuf_state =
+		intel_atomic_get_new_dbuf_state(state);
+	const struct intel_dbuf_state *old_dbuf_state =
+		intel_atomic_get_old_dbuf_state(state);
+
+	if (!new_dbuf_state ||
+	    (new_dbuf_state->enabled_slices == old_dbuf_state->enabled_slices &&
+	     new_dbuf_state->joined_mbus == old_dbuf_state->joined_mbus))
+		return;
+
+	WARN_ON(!new_dbuf_state->base.changed);
+
+	gen9_dbuf_slices_update(i915,
+				new_dbuf_state->enabled_slices);
+}
+
+static bool xelpdp_is_only_pipe_per_dbuf_bank(enum pipe pipe, u8 active_pipes)
+{
+	switch (pipe) {
+	case PIPE_A:
+		return !(active_pipes & BIT(PIPE_D));
+	case PIPE_D:
+		return !(active_pipes & BIT(PIPE_A));
+	case PIPE_B:
+		return !(active_pipes & BIT(PIPE_C));
+	case PIPE_C:
+		return !(active_pipes & BIT(PIPE_B));
+	default: /* to suppress compiler warning */
+		MISSING_CASE(pipe);
+		break;
+	}
+
+	return false;
+}
+
+void intel_mbus_dbox_update(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_dbuf_state *new_dbuf_state, *old_dbuf_state;
+	const struct intel_crtc_state *new_crtc_state;
+	const struct intel_crtc *crtc;
+	u32 val = 0;
+	int i;
+
+	if (DISPLAY_VER(i915) < 11)
+		return;
+
+	new_dbuf_state = intel_atomic_get_new_dbuf_state(state);
+	old_dbuf_state = intel_atomic_get_old_dbuf_state(state);
+	if (!new_dbuf_state ||
+	    (new_dbuf_state->joined_mbus == old_dbuf_state->joined_mbus &&
+	     new_dbuf_state->active_pipes == old_dbuf_state->active_pipes))
+		return;
+
+	if (DISPLAY_VER(i915) >= 14)
+		val |= MBUS_DBOX_I_CREDIT(2);
+
+	if (DISPLAY_VER(i915) >= 12) {
+		val |= MBUS_DBOX_B2B_TRANSACTIONS_MAX(16);
+		val |= MBUS_DBOX_B2B_TRANSACTIONS_DELAY(1);
+		val |= MBUS_DBOX_REGULATE_B2B_TRANSACTIONS_EN;
+	}
+
+	if (DISPLAY_VER(i915) >= 14)
+		val |= new_dbuf_state->joined_mbus ? MBUS_DBOX_A_CREDIT(12) :
+						     MBUS_DBOX_A_CREDIT(8);
+	else if (IS_ALDERLAKE_P(i915))
+		/* Wa_22010947358:adl-p */
+		val |= new_dbuf_state->joined_mbus ? MBUS_DBOX_A_CREDIT(6) :
+						     MBUS_DBOX_A_CREDIT(4);
+	else
+		val |= MBUS_DBOX_A_CREDIT(2);
+
+	if (DISPLAY_VER(i915) >= 14) {
+		val |= MBUS_DBOX_B_CREDIT(0xA);
+	} else if (IS_ALDERLAKE_P(i915)) {
+		val |= MBUS_DBOX_BW_CREDIT(2);
+		val |= MBUS_DBOX_B_CREDIT(8);
+	} else if (DISPLAY_VER(i915) >= 12) {
+		val |= MBUS_DBOX_BW_CREDIT(2);
+		val |= MBUS_DBOX_B_CREDIT(12);
+	} else {
+		val |= MBUS_DBOX_BW_CREDIT(1);
+		val |= MBUS_DBOX_B_CREDIT(8);
+	}
+
+	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
+		u32 pipe_val = val;
+
+		if (!new_crtc_state->hw.active)
+			continue;
+
+		if (DISPLAY_VER(i915) >= 14) {
+			if (xelpdp_is_only_pipe_per_dbuf_bank(crtc->pipe,
+							      new_dbuf_state->active_pipes))
+				pipe_val |= MBUS_DBOX_BW_8CREDITS_MTL;
+			else
+				pipe_val |= MBUS_DBOX_BW_4CREDITS_MTL;
+		}
+
+		intel_de_write(i915, PIPE_MBUS_DBOX_CTL(crtc->pipe), pipe_val);
+	}
+}
+
+static int skl_watermark_ipc_status_show(struct seq_file *m, void *data)
+{
+	struct drm_i915_private *i915 = m->private;
+
+	seq_printf(m, "Isochronous Priority Control: %s\n",
+		   str_yes_no(skl_watermark_ipc_enabled(i915)));
+	return 0;
+}
+
+static int skl_watermark_ipc_status_open(struct inode *inode, struct file *file)
+{
+	struct drm_i915_private *i915 = inode->i_private;
+
+	return single_open(file, skl_watermark_ipc_status_show, i915);
+}
+
+static ssize_t skl_watermark_ipc_status_write(struct file *file,
+					      const char __user *ubuf,
+					      size_t len, loff_t *offp)
+{
+	struct seq_file *m = file->private_data;
+	struct drm_i915_private *i915 = m->private;
+	intel_wakeref_t wakeref;
+	bool enable;
+	int ret;
+
+	ret = kstrtobool_from_user(ubuf, len, &enable);
+	if (ret < 0)
+		return ret;
+
+	with_intel_runtime_pm(&i915->runtime_pm, wakeref) {
+		if (!skl_watermark_ipc_enabled(i915) && enable)
+			drm_info(&i915->drm,
+				 "Enabling IPC: WM will be proper only after next commit\n");
+		i915->display.wm.ipc_enabled = enable;
+		skl_watermark_ipc_update(i915);
+	}
+
+	return len;
+}
+
+static const struct file_operations skl_watermark_ipc_status_fops = {
+	.owner = THIS_MODULE,
+	.open = skl_watermark_ipc_status_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+	.write = skl_watermark_ipc_status_write
+};
+
+void skl_watermark_ipc_debugfs_register(struct drm_i915_private *i915)
+{
+	struct drm_minor *minor = i915->drm.primary;
+
+	if (!HAS_IPC(i915))
+		return;
+
+	debugfs_create_file("i915_ipc_status", 0644, minor->debugfs_root, i915,
+			    &skl_watermark_ipc_status_fops);
+}
diff --git a/drivers/gpu/drm/i915/display/skl_watermark.h b/drivers/gpu/drm/i915/display/skl_watermark.h
new file mode 100644
index 000000000..7a5a4e67c
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/skl_watermark.h
@@ -0,0 +1,80 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#ifndef __SKL_WATERMARK_H__
+#define __SKL_WATERMARK_H__
+
+#include <linux/types.h>
+
+#include "intel_display.h"
+#include "intel_global_state.h"
+#include "intel_pm_types.h"
+
+struct drm_i915_private;
+struct intel_atomic_state;
+struct intel_bw_state;
+struct intel_crtc;
+struct intel_crtc_state;
+struct intel_plane;
+
+u8 intel_enabled_dbuf_slices_mask(struct drm_i915_private *i915);
+
+void intel_sagv_pre_plane_update(struct intel_atomic_state *state);
+void intel_sagv_post_plane_update(struct intel_atomic_state *state);
+bool intel_can_enable_sagv(struct drm_i915_private *i915,
+			   const struct intel_bw_state *bw_state);
+
+u32 skl_ddb_dbuf_slice_mask(struct drm_i915_private *i915,
+			    const struct skl_ddb_entry *entry);
+
+void skl_write_plane_wm(struct intel_plane *plane,
+			const struct intel_crtc_state *crtc_state);
+void skl_write_cursor_wm(struct intel_plane *plane,
+			 const struct intel_crtc_state *crtc_state);
+
+bool skl_ddb_allocation_overlaps(const struct skl_ddb_entry *ddb,
+				 const struct skl_ddb_entry *entries,
+				 int num_entries, int ignore_idx);
+
+void skl_wm_get_hw_state(struct drm_i915_private *i915);
+void skl_wm_sanitize(struct drm_i915_private *i915);
+
+void intel_wm_state_verify(struct intel_crtc *crtc,
+			   struct intel_crtc_state *new_crtc_state);
+
+void skl_watermark_ipc_init(struct drm_i915_private *i915);
+void skl_watermark_ipc_update(struct drm_i915_private *i915);
+bool skl_watermark_ipc_enabled(struct drm_i915_private *i915);
+void skl_watermark_ipc_debugfs_register(struct drm_i915_private *i915);
+
+void skl_wm_init(struct drm_i915_private *i915);
+
+struct intel_dbuf_state {
+	struct intel_global_state base;
+
+	struct skl_ddb_entry ddb[I915_MAX_PIPES];
+	unsigned int weight[I915_MAX_PIPES];
+	u8 slices[I915_MAX_PIPES];
+	u8 enabled_slices;
+	u8 active_pipes;
+	bool joined_mbus;
+};
+
+struct intel_dbuf_state *
+intel_atomic_get_dbuf_state(struct intel_atomic_state *state);
+
+#define to_intel_dbuf_state(x) container_of((x), struct intel_dbuf_state, base)
+#define intel_atomic_get_old_dbuf_state(state) \
+	to_intel_dbuf_state(intel_atomic_get_old_global_obj_state(state, &to_i915(state->base.dev)->display.dbuf.obj))
+#define intel_atomic_get_new_dbuf_state(state) \
+	to_intel_dbuf_state(intel_atomic_get_new_global_obj_state(state, &to_i915(state->base.dev)->display.dbuf.obj))
+
+int intel_dbuf_init(struct drm_i915_private *i915);
+void intel_dbuf_pre_plane_update(struct intel_atomic_state *state);
+void intel_dbuf_post_plane_update(struct intel_atomic_state *state);
+void intel_mbus_dbox_update(struct intel_atomic_state *state);
+
+#endif /* __SKL_WATERMARK_H__ */
+
diff --git a/drivers/gpu/drm/i915/display/vlv_dsi.c b/drivers/gpu/drm/i915/display/vlv_dsi.c
new file mode 100644
index 000000000..114088ca5
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/vlv_dsi.c
@@ -0,0 +1,2015 @@
+/*
+ * Copyright © 2013 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Author: Jani Nikula <jani.nikula@intel.com>
+ */
+
+#include <linux/slab.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_mipi_dsi.h>
+
+#include "i915_drv.h"
+#include "intel_atomic.h"
+#include "intel_backlight.h"
+#include "intel_connector.h"
+#include "intel_crtc.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_dsi.h"
+#include "intel_dsi_vbt.h"
+#include "intel_fifo_underrun.h"
+#include "intel_panel.h"
+#include "skl_scaler.h"
+#include "vlv_dsi.h"
+#include "vlv_dsi_pll.h"
+#include "vlv_dsi_regs.h"
+#include "vlv_sideband.h"
+
+/* return pixels in terms of txbyteclkhs */
+static u16 txbyteclkhs(u16 pixels, int bpp, int lane_count,
+		       u16 burst_mode_ratio)
+{
+	return DIV_ROUND_UP(DIV_ROUND_UP(pixels * bpp * burst_mode_ratio,
+					 8 * 100), lane_count);
+}
+
+/* return pixels equvalent to txbyteclkhs */
+static u16 pixels_from_txbyteclkhs(u16 clk_hs, int bpp, int lane_count,
+			u16 burst_mode_ratio)
+{
+	return DIV_ROUND_UP((clk_hs * lane_count * 8 * 100),
+						(bpp * burst_mode_ratio));
+}
+
+enum mipi_dsi_pixel_format pixel_format_from_register_bits(u32 fmt)
+{
+	/* It just so happens the VBT matches register contents. */
+	switch (fmt) {
+	case VID_MODE_FORMAT_RGB888:
+		return MIPI_DSI_FMT_RGB888;
+	case VID_MODE_FORMAT_RGB666:
+		return MIPI_DSI_FMT_RGB666;
+	case VID_MODE_FORMAT_RGB666_PACKED:
+		return MIPI_DSI_FMT_RGB666_PACKED;
+	case VID_MODE_FORMAT_RGB565:
+		return MIPI_DSI_FMT_RGB565;
+	default:
+		MISSING_CASE(fmt);
+		return MIPI_DSI_FMT_RGB666;
+	}
+}
+
+void vlv_dsi_wait_for_fifo_empty(struct intel_dsi *intel_dsi, enum port port)
+{
+	struct drm_encoder *encoder = &intel_dsi->base.base;
+	struct drm_device *dev = encoder->dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	u32 mask;
+
+	mask = LP_CTRL_FIFO_EMPTY | HS_CTRL_FIFO_EMPTY |
+		LP_DATA_FIFO_EMPTY | HS_DATA_FIFO_EMPTY;
+
+	if (intel_de_wait_for_set(dev_priv, MIPI_GEN_FIFO_STAT(port),
+				  mask, 100))
+		drm_err(&dev_priv->drm, "DPI FIFOs are not empty\n");
+}
+
+static void write_data(struct drm_i915_private *dev_priv,
+		       i915_reg_t reg,
+		       const u8 *data, u32 len)
+{
+	u32 i, j;
+
+	for (i = 0; i < len; i += 4) {
+		u32 val = 0;
+
+		for (j = 0; j < min_t(u32, len - i, 4); j++)
+			val |= *data++ << 8 * j;
+
+		intel_de_write(dev_priv, reg, val);
+	}
+}
+
+static void read_data(struct drm_i915_private *dev_priv,
+		      i915_reg_t reg,
+		      u8 *data, u32 len)
+{
+	u32 i, j;
+
+	for (i = 0; i < len; i += 4) {
+		u32 val = intel_de_read(dev_priv, reg);
+
+		for (j = 0; j < min_t(u32, len - i, 4); j++)
+			*data++ = val >> 8 * j;
+	}
+}
+
+static ssize_t intel_dsi_host_transfer(struct mipi_dsi_host *host,
+				       const struct mipi_dsi_msg *msg)
+{
+	struct intel_dsi_host *intel_dsi_host = to_intel_dsi_host(host);
+	struct drm_device *dev = intel_dsi_host->intel_dsi->base.base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	enum port port = intel_dsi_host->port;
+	struct mipi_dsi_packet packet;
+	ssize_t ret;
+	const u8 *header, *data;
+	i915_reg_t data_reg, ctrl_reg;
+	u32 data_mask, ctrl_mask;
+
+	ret = mipi_dsi_create_packet(&packet, msg);
+	if (ret < 0)
+		return ret;
+
+	header = packet.header;
+	data = packet.payload;
+
+	if (msg->flags & MIPI_DSI_MSG_USE_LPM) {
+		data_reg = MIPI_LP_GEN_DATA(port);
+		data_mask = LP_DATA_FIFO_FULL;
+		ctrl_reg = MIPI_LP_GEN_CTRL(port);
+		ctrl_mask = LP_CTRL_FIFO_FULL;
+	} else {
+		data_reg = MIPI_HS_GEN_DATA(port);
+		data_mask = HS_DATA_FIFO_FULL;
+		ctrl_reg = MIPI_HS_GEN_CTRL(port);
+		ctrl_mask = HS_CTRL_FIFO_FULL;
+	}
+
+	/* note: this is never true for reads */
+	if (packet.payload_length) {
+		if (intel_de_wait_for_clear(dev_priv, MIPI_GEN_FIFO_STAT(port),
+					    data_mask, 50))
+			drm_err(&dev_priv->drm,
+				"Timeout waiting for HS/LP DATA FIFO !full\n");
+
+		write_data(dev_priv, data_reg, packet.payload,
+			   packet.payload_length);
+	}
+
+	if (msg->rx_len) {
+		intel_de_write(dev_priv, MIPI_INTR_STAT(port),
+			       GEN_READ_DATA_AVAIL);
+	}
+
+	if (intel_de_wait_for_clear(dev_priv, MIPI_GEN_FIFO_STAT(port),
+				    ctrl_mask, 50)) {
+		drm_err(&dev_priv->drm,
+			"Timeout waiting for HS/LP CTRL FIFO !full\n");
+	}
+
+	intel_de_write(dev_priv, ctrl_reg,
+		       header[2] << 16 | header[1] << 8 | header[0]);
+
+	/* ->rx_len is set only for reads */
+	if (msg->rx_len) {
+		data_mask = GEN_READ_DATA_AVAIL;
+		if (intel_de_wait_for_set(dev_priv, MIPI_INTR_STAT(port),
+					  data_mask, 50))
+			drm_err(&dev_priv->drm,
+				"Timeout waiting for read data.\n");
+
+		read_data(dev_priv, data_reg, msg->rx_buf, msg->rx_len);
+	}
+
+	/* XXX: fix for reads and writes */
+	return 4 + packet.payload_length;
+}
+
+static int intel_dsi_host_attach(struct mipi_dsi_host *host,
+				 struct mipi_dsi_device *dsi)
+{
+	return 0;
+}
+
+static int intel_dsi_host_detach(struct mipi_dsi_host *host,
+				 struct mipi_dsi_device *dsi)
+{
+	return 0;
+}
+
+static const struct mipi_dsi_host_ops intel_dsi_host_ops = {
+	.attach = intel_dsi_host_attach,
+	.detach = intel_dsi_host_detach,
+	.transfer = intel_dsi_host_transfer,
+};
+
+/*
+ * send a video mode command
+ *
+ * XXX: commands with data in MIPI_DPI_DATA?
+ */
+static int dpi_send_cmd(struct intel_dsi *intel_dsi, u32 cmd, bool hs,
+			enum port port)
+{
+	struct drm_encoder *encoder = &intel_dsi->base.base;
+	struct drm_device *dev = encoder->dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	u32 mask;
+
+	/* XXX: pipe, hs */
+	if (hs)
+		cmd &= ~DPI_LP_MODE;
+	else
+		cmd |= DPI_LP_MODE;
+
+	/* clear bit */
+	intel_de_write(dev_priv, MIPI_INTR_STAT(port), SPL_PKT_SENT_INTERRUPT);
+
+	/* XXX: old code skips write if control unchanged */
+	if (cmd == intel_de_read(dev_priv, MIPI_DPI_CONTROL(port)))
+		drm_dbg_kms(&dev_priv->drm,
+			    "Same special packet %02x twice in a row.\n", cmd);
+
+	intel_de_write(dev_priv, MIPI_DPI_CONTROL(port), cmd);
+
+	mask = SPL_PKT_SENT_INTERRUPT;
+	if (intel_de_wait_for_set(dev_priv, MIPI_INTR_STAT(port), mask, 100))
+		drm_err(&dev_priv->drm,
+			"Video mode command 0x%08x send failed.\n", cmd);
+
+	return 0;
+}
+
+static void band_gap_reset(struct drm_i915_private *dev_priv)
+{
+	vlv_flisdsi_get(dev_priv);
+
+	vlv_flisdsi_write(dev_priv, 0x08, 0x0001);
+	vlv_flisdsi_write(dev_priv, 0x0F, 0x0005);
+	vlv_flisdsi_write(dev_priv, 0x0F, 0x0025);
+	udelay(150);
+	vlv_flisdsi_write(dev_priv, 0x0F, 0x0000);
+	vlv_flisdsi_write(dev_priv, 0x08, 0x0000);
+
+	vlv_flisdsi_put(dev_priv);
+}
+
+static int intel_dsi_compute_config(struct intel_encoder *encoder,
+				    struct intel_crtc_state *pipe_config,
+				    struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = container_of(encoder, struct intel_dsi,
+						   base);
+	struct intel_connector *intel_connector = intel_dsi->attached_connector;
+	struct drm_display_mode *adjusted_mode = &pipe_config->hw.adjusted_mode;
+	int ret;
+
+	drm_dbg_kms(&dev_priv->drm, "\n");
+	pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
+
+	ret = intel_panel_compute_config(intel_connector, adjusted_mode);
+	if (ret)
+		return ret;
+
+	ret = intel_panel_fitting(pipe_config, conn_state);
+	if (ret)
+		return ret;
+
+	if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)
+		return -EINVAL;
+
+	/* DSI uses short packets for sync events, so clear mode flags for DSI */
+	adjusted_mode->flags = 0;
+
+	if (intel_dsi->pixel_format == MIPI_DSI_FMT_RGB888)
+		pipe_config->pipe_bpp = 24;
+	else
+		pipe_config->pipe_bpp = 18;
+
+	if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) {
+		/* Enable Frame time stamp based scanline reporting */
+		pipe_config->mode_flags |=
+			I915_MODE_FLAG_GET_SCANLINE_FROM_TIMESTAMP;
+
+		/* Dual link goes to DSI transcoder A. */
+		if (intel_dsi->ports == BIT(PORT_C))
+			pipe_config->cpu_transcoder = TRANSCODER_DSI_C;
+		else
+			pipe_config->cpu_transcoder = TRANSCODER_DSI_A;
+
+		ret = bxt_dsi_pll_compute(encoder, pipe_config);
+		if (ret)
+			return -EINVAL;
+	} else {
+		ret = vlv_dsi_pll_compute(encoder, pipe_config);
+		if (ret)
+			return -EINVAL;
+	}
+
+	pipe_config->clock_set = true;
+
+	return 0;
+}
+
+static bool glk_dsi_enable_io(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	enum port port;
+	u32 tmp;
+	bool cold_boot = false;
+
+	/* Set the MIPI mode
+	 * If MIPI_Mode is off, then writing to LP_Wake bit is not reflecting.
+	 * Power ON MIPI IO first and then write into IO reset and LP wake bits
+	 */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		tmp = intel_de_read(dev_priv, MIPI_CTRL(port));
+		intel_de_write(dev_priv, MIPI_CTRL(port),
+			       tmp | GLK_MIPIIO_ENABLE);
+	}
+
+	/* Put the IO into reset */
+	tmp = intel_de_read(dev_priv, MIPI_CTRL(PORT_A));
+	tmp &= ~GLK_MIPIIO_RESET_RELEASED;
+	intel_de_write(dev_priv, MIPI_CTRL(PORT_A), tmp);
+
+	/* Program LP Wake */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		tmp = intel_de_read(dev_priv, MIPI_CTRL(port));
+		if (!(intel_de_read(dev_priv, MIPI_DEVICE_READY(port)) & DEVICE_READY))
+			tmp &= ~GLK_LP_WAKE;
+		else
+			tmp |= GLK_LP_WAKE;
+		intel_de_write(dev_priv, MIPI_CTRL(port), tmp);
+	}
+
+	/* Wait for Pwr ACK */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		if (intel_de_wait_for_set(dev_priv, MIPI_CTRL(port),
+					  GLK_MIPIIO_PORT_POWERED, 20))
+			drm_err(&dev_priv->drm, "MIPIO port is powergated\n");
+	}
+
+	/* Check for cold boot scenario */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		cold_boot |=
+			!(intel_de_read(dev_priv, MIPI_DEVICE_READY(port)) & DEVICE_READY);
+	}
+
+	return cold_boot;
+}
+
+static void glk_dsi_device_ready(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	enum port port;
+	u32 val;
+
+	/* Wait for MIPI PHY status bit to set */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		if (intel_de_wait_for_set(dev_priv, MIPI_CTRL(port),
+					  GLK_PHY_STATUS_PORT_READY, 20))
+			drm_err(&dev_priv->drm, "PHY is not ON\n");
+	}
+
+	/* Get IO out of reset */
+	val = intel_de_read(dev_priv, MIPI_CTRL(PORT_A));
+	intel_de_write(dev_priv, MIPI_CTRL(PORT_A),
+		       val | GLK_MIPIIO_RESET_RELEASED);
+
+	/* Get IO out of Low power state*/
+	for_each_dsi_port(port, intel_dsi->ports) {
+		if (!(intel_de_read(dev_priv, MIPI_DEVICE_READY(port)) & DEVICE_READY)) {
+			val = intel_de_read(dev_priv, MIPI_DEVICE_READY(port));
+			val &= ~ULPS_STATE_MASK;
+			val |= DEVICE_READY;
+			intel_de_write(dev_priv, MIPI_DEVICE_READY(port), val);
+			usleep_range(10, 15);
+		} else {
+			/* Enter ULPS */
+			val = intel_de_read(dev_priv, MIPI_DEVICE_READY(port));
+			val &= ~ULPS_STATE_MASK;
+			val |= (ULPS_STATE_ENTER | DEVICE_READY);
+			intel_de_write(dev_priv, MIPI_DEVICE_READY(port), val);
+
+			/* Wait for ULPS active */
+			if (intel_de_wait_for_clear(dev_priv, MIPI_CTRL(port),
+						    GLK_ULPS_NOT_ACTIVE, 20))
+				drm_err(&dev_priv->drm, "ULPS not active\n");
+
+			/* Exit ULPS */
+			val = intel_de_read(dev_priv, MIPI_DEVICE_READY(port));
+			val &= ~ULPS_STATE_MASK;
+			val |= (ULPS_STATE_EXIT | DEVICE_READY);
+			intel_de_write(dev_priv, MIPI_DEVICE_READY(port), val);
+
+			/* Enter Normal Mode */
+			val = intel_de_read(dev_priv, MIPI_DEVICE_READY(port));
+			val &= ~ULPS_STATE_MASK;
+			val |= (ULPS_STATE_NORMAL_OPERATION | DEVICE_READY);
+			intel_de_write(dev_priv, MIPI_DEVICE_READY(port), val);
+
+			val = intel_de_read(dev_priv, MIPI_CTRL(port));
+			val &= ~GLK_LP_WAKE;
+			intel_de_write(dev_priv, MIPI_CTRL(port), val);
+		}
+	}
+
+	/* Wait for Stop state */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		if (intel_de_wait_for_set(dev_priv, MIPI_CTRL(port),
+					  GLK_DATA_LANE_STOP_STATE, 20))
+			drm_err(&dev_priv->drm,
+				"Date lane not in STOP state\n");
+	}
+
+	/* Wait for AFE LATCH */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		if (intel_de_wait_for_set(dev_priv, BXT_MIPI_PORT_CTRL(port),
+					  AFE_LATCHOUT, 20))
+			drm_err(&dev_priv->drm,
+				"D-PHY not entering LP-11 state\n");
+	}
+}
+
+static void bxt_dsi_device_ready(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	enum port port;
+	u32 val;
+
+	drm_dbg_kms(&dev_priv->drm, "\n");
+
+	/* Enable MIPI PHY transparent latch */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		val = intel_de_read(dev_priv, BXT_MIPI_PORT_CTRL(port));
+		intel_de_write(dev_priv, BXT_MIPI_PORT_CTRL(port),
+			       val | LP_OUTPUT_HOLD);
+		usleep_range(2000, 2500);
+	}
+
+	/* Clear ULPS and set device ready */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		val = intel_de_read(dev_priv, MIPI_DEVICE_READY(port));
+		val &= ~ULPS_STATE_MASK;
+		intel_de_write(dev_priv, MIPI_DEVICE_READY(port), val);
+		usleep_range(2000, 2500);
+		val |= DEVICE_READY;
+		intel_de_write(dev_priv, MIPI_DEVICE_READY(port), val);
+	}
+}
+
+static void vlv_dsi_device_ready(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	enum port port;
+	u32 val;
+
+	drm_dbg_kms(&dev_priv->drm, "\n");
+
+	vlv_flisdsi_get(dev_priv);
+	/* program rcomp for compliance, reduce from 50 ohms to 45 ohms
+	 * needed everytime after power gate */
+	vlv_flisdsi_write(dev_priv, 0x04, 0x0004);
+	vlv_flisdsi_put(dev_priv);
+
+	/* bandgap reset is needed after everytime we do power gate */
+	band_gap_reset(dev_priv);
+
+	for_each_dsi_port(port, intel_dsi->ports) {
+
+		intel_de_write(dev_priv, MIPI_DEVICE_READY(port),
+			       ULPS_STATE_ENTER);
+		usleep_range(2500, 3000);
+
+		/* Enable MIPI PHY transparent latch
+		 * Common bit for both MIPI Port A & MIPI Port C
+		 * No similar bit in MIPI Port C reg
+		 */
+		val = intel_de_read(dev_priv, MIPI_PORT_CTRL(PORT_A));
+		intel_de_write(dev_priv, MIPI_PORT_CTRL(PORT_A),
+			       val | LP_OUTPUT_HOLD);
+		usleep_range(1000, 1500);
+
+		intel_de_write(dev_priv, MIPI_DEVICE_READY(port),
+			       ULPS_STATE_EXIT);
+		usleep_range(2500, 3000);
+
+		intel_de_write(dev_priv, MIPI_DEVICE_READY(port),
+			       DEVICE_READY);
+		usleep_range(2500, 3000);
+	}
+}
+
+static void intel_dsi_device_ready(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+
+	if (IS_GEMINILAKE(dev_priv))
+		glk_dsi_device_ready(encoder);
+	else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
+		bxt_dsi_device_ready(encoder);
+	else
+		vlv_dsi_device_ready(encoder);
+}
+
+static void glk_dsi_enter_low_power_mode(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	enum port port;
+	u32 val;
+
+	/* Enter ULPS */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		val = intel_de_read(dev_priv, MIPI_DEVICE_READY(port));
+		val &= ~ULPS_STATE_MASK;
+		val |= (ULPS_STATE_ENTER | DEVICE_READY);
+		intel_de_write(dev_priv, MIPI_DEVICE_READY(port), val);
+	}
+
+	/* Wait for MIPI PHY status bit to unset */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		if (intel_de_wait_for_clear(dev_priv, MIPI_CTRL(port),
+					    GLK_PHY_STATUS_PORT_READY, 20))
+			drm_err(&dev_priv->drm, "PHY is not turning OFF\n");
+	}
+
+	/* Wait for Pwr ACK bit to unset */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		if (intel_de_wait_for_clear(dev_priv, MIPI_CTRL(port),
+					    GLK_MIPIIO_PORT_POWERED, 20))
+			drm_err(&dev_priv->drm,
+				"MIPI IO Port is not powergated\n");
+	}
+}
+
+static void glk_dsi_disable_mipi_io(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	enum port port;
+	u32 tmp;
+
+	/* Put the IO into reset */
+	tmp = intel_de_read(dev_priv, MIPI_CTRL(PORT_A));
+	tmp &= ~GLK_MIPIIO_RESET_RELEASED;
+	intel_de_write(dev_priv, MIPI_CTRL(PORT_A), tmp);
+
+	/* Wait for MIPI PHY status bit to unset */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		if (intel_de_wait_for_clear(dev_priv, MIPI_CTRL(port),
+					    GLK_PHY_STATUS_PORT_READY, 20))
+			drm_err(&dev_priv->drm, "PHY is not turning OFF\n");
+	}
+
+	/* Clear MIPI mode */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		tmp = intel_de_read(dev_priv, MIPI_CTRL(port));
+		tmp &= ~GLK_MIPIIO_ENABLE;
+		intel_de_write(dev_priv, MIPI_CTRL(port), tmp);
+	}
+}
+
+static void glk_dsi_clear_device_ready(struct intel_encoder *encoder)
+{
+	glk_dsi_enter_low_power_mode(encoder);
+	glk_dsi_disable_mipi_io(encoder);
+}
+
+static void vlv_dsi_clear_device_ready(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	enum port port;
+
+	drm_dbg_kms(&dev_priv->drm, "\n");
+	for_each_dsi_port(port, intel_dsi->ports) {
+		/* Common bit for both MIPI Port A & MIPI Port C on VLV/CHV */
+		i915_reg_t port_ctrl = IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv) ?
+			BXT_MIPI_PORT_CTRL(port) : MIPI_PORT_CTRL(PORT_A);
+		u32 val;
+
+		intel_de_write(dev_priv, MIPI_DEVICE_READY(port),
+			       DEVICE_READY | ULPS_STATE_ENTER);
+		usleep_range(2000, 2500);
+
+		intel_de_write(dev_priv, MIPI_DEVICE_READY(port),
+			       DEVICE_READY | ULPS_STATE_EXIT);
+		usleep_range(2000, 2500);
+
+		intel_de_write(dev_priv, MIPI_DEVICE_READY(port),
+			       DEVICE_READY | ULPS_STATE_ENTER);
+		usleep_range(2000, 2500);
+
+		/*
+		 * On VLV/CHV, wait till Clock lanes are in LP-00 state for MIPI
+		 * Port A only. MIPI Port C has no similar bit for checking.
+		 */
+		if ((IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv) || port == PORT_A) &&
+		    intel_de_wait_for_clear(dev_priv, port_ctrl,
+					    AFE_LATCHOUT, 30))
+			drm_err(&dev_priv->drm, "DSI LP not going Low\n");
+
+		/* Disable MIPI PHY transparent latch */
+		val = intel_de_read(dev_priv, port_ctrl);
+		intel_de_write(dev_priv, port_ctrl, val & ~LP_OUTPUT_HOLD);
+		usleep_range(1000, 1500);
+
+		intel_de_write(dev_priv, MIPI_DEVICE_READY(port), 0x00);
+		usleep_range(2000, 2500);
+	}
+}
+
+static void intel_dsi_port_enable(struct intel_encoder *encoder,
+				  const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	enum port port;
+
+	if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK) {
+		u32 temp;
+		if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) {
+			for_each_dsi_port(port, intel_dsi->ports) {
+				temp = intel_de_read(dev_priv,
+						     MIPI_CTRL(port));
+				temp &= ~BXT_PIXEL_OVERLAP_CNT_MASK |
+					intel_dsi->pixel_overlap <<
+					BXT_PIXEL_OVERLAP_CNT_SHIFT;
+				intel_de_write(dev_priv, MIPI_CTRL(port),
+					       temp);
+			}
+		} else {
+			temp = intel_de_read(dev_priv, VLV_CHICKEN_3);
+			temp &= ~PIXEL_OVERLAP_CNT_MASK |
+					intel_dsi->pixel_overlap <<
+					PIXEL_OVERLAP_CNT_SHIFT;
+			intel_de_write(dev_priv, VLV_CHICKEN_3, temp);
+		}
+	}
+
+	for_each_dsi_port(port, intel_dsi->ports) {
+		i915_reg_t port_ctrl = IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv) ?
+			BXT_MIPI_PORT_CTRL(port) : MIPI_PORT_CTRL(port);
+		u32 temp;
+
+		temp = intel_de_read(dev_priv, port_ctrl);
+
+		temp &= ~LANE_CONFIGURATION_MASK;
+		temp &= ~DUAL_LINK_MODE_MASK;
+
+		if (intel_dsi->ports == (BIT(PORT_A) | BIT(PORT_C))) {
+			temp |= (intel_dsi->dual_link - 1)
+						<< DUAL_LINK_MODE_SHIFT;
+			if (IS_BROXTON(dev_priv))
+				temp |= LANE_CONFIGURATION_DUAL_LINK_A;
+			else
+				temp |= crtc->pipe ?
+					LANE_CONFIGURATION_DUAL_LINK_B :
+					LANE_CONFIGURATION_DUAL_LINK_A;
+		}
+
+		if (intel_dsi->pixel_format != MIPI_DSI_FMT_RGB888)
+			temp |= DITHERING_ENABLE;
+
+		/* assert ip_tg_enable signal */
+		intel_de_write(dev_priv, port_ctrl, temp | DPI_ENABLE);
+		intel_de_posting_read(dev_priv, port_ctrl);
+	}
+}
+
+static void intel_dsi_port_disable(struct intel_encoder *encoder)
+{
+	struct drm_device *dev = encoder->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	enum port port;
+
+	for_each_dsi_port(port, intel_dsi->ports) {
+		i915_reg_t port_ctrl = IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv) ?
+			BXT_MIPI_PORT_CTRL(port) : MIPI_PORT_CTRL(port);
+		u32 temp;
+
+		/* de-assert ip_tg_enable signal */
+		temp = intel_de_read(dev_priv, port_ctrl);
+		intel_de_write(dev_priv, port_ctrl, temp & ~DPI_ENABLE);
+		intel_de_posting_read(dev_priv, port_ctrl);
+	}
+}
+
+static void intel_dsi_wait_panel_power_cycle(struct intel_dsi *intel_dsi)
+{
+	ktime_t panel_power_on_time;
+	s64 panel_power_off_duration;
+
+	panel_power_on_time = ktime_get_boottime();
+	panel_power_off_duration = ktime_ms_delta(panel_power_on_time,
+						  intel_dsi->panel_power_off_time);
+
+	if (panel_power_off_duration < (s64)intel_dsi->panel_pwr_cycle_delay)
+		msleep(intel_dsi->panel_pwr_cycle_delay - panel_power_off_duration);
+}
+
+static void intel_dsi_prepare(struct intel_encoder *intel_encoder,
+			      const struct intel_crtc_state *pipe_config);
+static void intel_dsi_unprepare(struct intel_encoder *encoder);
+
+/*
+ * Panel enable/disable sequences from the VBT spec.
+ *
+ * Note the spec has AssertReset / DeassertReset swapped from their
+ * usual naming. We use the normal names to avoid confusion (so below
+ * they are swapped compared to the spec).
+ *
+ * Steps starting with MIPI refer to VBT sequences, note that for v2
+ * VBTs several steps which have a VBT in v2 are expected to be handled
+ * directly by the driver, by directly driving gpios for example.
+ *
+ * v2 video mode seq         v3 video mode seq         command mode seq
+ * - power on                - MIPIPanelPowerOn        - power on
+ * - wait t1+t2                                        - wait t1+t2
+ * - MIPIDeassertResetPin    - MIPIDeassertResetPin    - MIPIDeassertResetPin
+ * - io lines to lp-11       - io lines to lp-11       - io lines to lp-11
+ * - MIPISendInitialDcsCmds  - MIPISendInitialDcsCmds  - MIPISendInitialDcsCmds
+ *                                                     - MIPITearOn
+ *                                                     - MIPIDisplayOn
+ * - turn on DPI             - turn on DPI             - set pipe to dsr mode
+ * - MIPIDisplayOn           - MIPIDisplayOn
+ * - wait t5                                           - wait t5
+ * - backlight on            - MIPIBacklightOn         - backlight on
+ * ...                       ...                       ... issue mem cmds ...
+ * - backlight off           - MIPIBacklightOff        - backlight off
+ * - wait t6                                           - wait t6
+ * - MIPIDisplayOff
+ * - turn off DPI            - turn off DPI            - disable pipe dsr mode
+ *                                                     - MIPITearOff
+ *                           - MIPIDisplayOff          - MIPIDisplayOff
+ * - io lines to lp-00       - io lines to lp-00       - io lines to lp-00
+ * - MIPIAssertResetPin      - MIPIAssertResetPin      - MIPIAssertResetPin
+ * - wait t3                                           - wait t3
+ * - power off               - MIPIPanelPowerOff       - power off
+ * - wait t4                                           - wait t4
+ */
+
+/*
+ * DSI port enable has to be done before pipe and plane enable, so we do it in
+ * the pre_enable hook instead of the enable hook.
+ */
+static void intel_dsi_pre_enable(struct intel_atomic_state *state,
+				 struct intel_encoder *encoder,
+				 const struct intel_crtc_state *pipe_config,
+				 const struct drm_connector_state *conn_state)
+{
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+	enum port port;
+	u32 val;
+	bool glk_cold_boot = false;
+
+	drm_dbg_kms(&dev_priv->drm, "\n");
+
+	intel_dsi_wait_panel_power_cycle(intel_dsi);
+
+	intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
+
+	/*
+	 * The BIOS may leave the PLL in a wonky state where it doesn't
+	 * lock. It needs to be fully powered down to fix it.
+	 */
+	if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) {
+		bxt_dsi_pll_disable(encoder);
+		bxt_dsi_pll_enable(encoder, pipe_config);
+	} else {
+		vlv_dsi_pll_disable(encoder);
+		vlv_dsi_pll_enable(encoder, pipe_config);
+	}
+
+	if (IS_BROXTON(dev_priv)) {
+		/* Add MIPI IO reset programming for modeset */
+		val = intel_de_read(dev_priv, BXT_P_CR_GT_DISP_PWRON);
+		intel_de_write(dev_priv, BXT_P_CR_GT_DISP_PWRON,
+			       val | MIPIO_RST_CTRL);
+
+		/* Power up DSI regulator */
+		intel_de_write(dev_priv, BXT_P_DSI_REGULATOR_CFG, STAP_SELECT);
+		intel_de_write(dev_priv, BXT_P_DSI_REGULATOR_TX_CTRL, 0);
+	}
+
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+		u32 val;
+
+		/* Disable DPOunit clock gating, can stall pipe */
+		val = intel_de_read(dev_priv, DSPCLK_GATE_D(dev_priv));
+		val |= DPOUNIT_CLOCK_GATE_DISABLE;
+		intel_de_write(dev_priv, DSPCLK_GATE_D(dev_priv), val);
+	}
+
+	if (!IS_GEMINILAKE(dev_priv))
+		intel_dsi_prepare(encoder, pipe_config);
+
+	/* Give the panel time to power-on and then deassert its reset */
+	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_POWER_ON);
+	msleep(intel_dsi->panel_on_delay);
+	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DEASSERT_RESET);
+
+	if (IS_GEMINILAKE(dev_priv)) {
+		glk_cold_boot = glk_dsi_enable_io(encoder);
+
+		/* Prepare port in cold boot(s3/s4) scenario */
+		if (glk_cold_boot)
+			intel_dsi_prepare(encoder, pipe_config);
+	}
+
+	/* Put device in ready state (LP-11) */
+	intel_dsi_device_ready(encoder);
+
+	/* Prepare port in normal boot scenario */
+	if (IS_GEMINILAKE(dev_priv) && !glk_cold_boot)
+		intel_dsi_prepare(encoder, pipe_config);
+
+	/* Send initialization commands in LP mode */
+	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_INIT_OTP);
+
+	/*
+	 * Enable port in pre-enable phase itself because as per hw team
+	 * recommendation, port should be enabled before plane & pipe
+	 */
+	if (is_cmd_mode(intel_dsi)) {
+		for_each_dsi_port(port, intel_dsi->ports)
+			intel_de_write(dev_priv,
+				       MIPI_MAX_RETURN_PKT_SIZE(port), 8 * 4);
+		intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_TEAR_ON);
+		intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DISPLAY_ON);
+	} else {
+		msleep(20); /* XXX */
+		for_each_dsi_port(port, intel_dsi->ports)
+			dpi_send_cmd(intel_dsi, TURN_ON, false, port);
+		msleep(100);
+
+		intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DISPLAY_ON);
+
+		intel_dsi_port_enable(encoder, pipe_config);
+	}
+
+	intel_backlight_enable(pipe_config, conn_state);
+	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_BACKLIGHT_ON);
+}
+
+static void bxt_dsi_enable(struct intel_atomic_state *state,
+			   struct intel_encoder *encoder,
+			   const struct intel_crtc_state *crtc_state,
+			   const struct drm_connector_state *conn_state)
+{
+	drm_WARN_ON(state->base.dev, crtc_state->has_pch_encoder);
+
+	intel_crtc_vblank_on(crtc_state);
+}
+
+/*
+ * DSI port disable has to be done after pipe and plane disable, so we do it in
+ * the post_disable hook.
+ */
+static void intel_dsi_disable(struct intel_atomic_state *state,
+			      struct intel_encoder *encoder,
+			      const struct intel_crtc_state *old_crtc_state,
+			      const struct drm_connector_state *old_conn_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	enum port port;
+
+	drm_dbg_kms(&i915->drm, "\n");
+
+	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_BACKLIGHT_OFF);
+	intel_backlight_disable(old_conn_state);
+
+	/*
+	 * According to the spec we should send SHUTDOWN before
+	 * MIPI_SEQ_DISPLAY_OFF only for v3+ VBTs, but field testing
+	 * has shown that the v3 sequence works for v2 VBTs too
+	 */
+	if (is_vid_mode(intel_dsi)) {
+		/* Send Shutdown command to the panel in LP mode */
+		for_each_dsi_port(port, intel_dsi->ports)
+			dpi_send_cmd(intel_dsi, SHUTDOWN, false, port);
+		msleep(10);
+	}
+}
+
+static void intel_dsi_clear_device_ready(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+
+	if (IS_GEMINILAKE(dev_priv))
+		glk_dsi_clear_device_ready(encoder);
+	else
+		vlv_dsi_clear_device_ready(encoder);
+}
+
+static void intel_dsi_post_disable(struct intel_atomic_state *state,
+				   struct intel_encoder *encoder,
+				   const struct intel_crtc_state *old_crtc_state,
+				   const struct drm_connector_state *old_conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	enum port port;
+	u32 val;
+
+	drm_dbg_kms(&dev_priv->drm, "\n");
+
+	if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) {
+		intel_crtc_vblank_off(old_crtc_state);
+
+		skl_scaler_disable(old_crtc_state);
+	}
+
+	if (is_vid_mode(intel_dsi)) {
+		for_each_dsi_port(port, intel_dsi->ports)
+			vlv_dsi_wait_for_fifo_empty(intel_dsi, port);
+
+		intel_dsi_port_disable(encoder);
+		usleep_range(2000, 5000);
+	}
+
+	intel_dsi_unprepare(encoder);
+
+	/*
+	 * if disable packets are sent before sending shutdown packet then in
+	 * some next enable sequence send turn on packet error is observed
+	 */
+	if (is_cmd_mode(intel_dsi))
+		intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_TEAR_OFF);
+	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DISPLAY_OFF);
+
+	/* Transition to LP-00 */
+	intel_dsi_clear_device_ready(encoder);
+
+	if (IS_BROXTON(dev_priv)) {
+		/* Power down DSI regulator to save power */
+		intel_de_write(dev_priv, BXT_P_DSI_REGULATOR_CFG, STAP_SELECT);
+		intel_de_write(dev_priv, BXT_P_DSI_REGULATOR_TX_CTRL,
+			       HS_IO_CTRL_SELECT);
+
+		/* Add MIPI IO reset programming for modeset */
+		val = intel_de_read(dev_priv, BXT_P_CR_GT_DISP_PWRON);
+		intel_de_write(dev_priv, BXT_P_CR_GT_DISP_PWRON,
+			       val & ~MIPIO_RST_CTRL);
+	}
+
+	if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) {
+		bxt_dsi_pll_disable(encoder);
+	} else {
+		u32 val;
+
+		vlv_dsi_pll_disable(encoder);
+
+		val = intel_de_read(dev_priv, DSPCLK_GATE_D(dev_priv));
+		val &= ~DPOUNIT_CLOCK_GATE_DISABLE;
+		intel_de_write(dev_priv, DSPCLK_GATE_D(dev_priv), val);
+	}
+
+	/* Assert reset */
+	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_ASSERT_RESET);
+
+	msleep(intel_dsi->panel_off_delay);
+	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_POWER_OFF);
+
+	intel_dsi->panel_power_off_time = ktime_get_boottime();
+}
+
+static void intel_dsi_shutdown(struct intel_encoder *encoder)
+{
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+
+	intel_dsi_wait_panel_power_cycle(intel_dsi);
+}
+
+static bool intel_dsi_get_hw_state(struct intel_encoder *encoder,
+				   enum pipe *pipe)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	intel_wakeref_t wakeref;
+	enum port port;
+	bool active = false;
+
+	drm_dbg_kms(&dev_priv->drm, "\n");
+
+	wakeref = intel_display_power_get_if_enabled(dev_priv,
+						     encoder->power_domain);
+	if (!wakeref)
+		return false;
+
+	/*
+	 * On Broxton the PLL needs to be enabled with a valid divider
+	 * configuration, otherwise accessing DSI registers will hang the
+	 * machine. See BSpec North Display Engine registers/MIPI[BXT].
+	 */
+	if ((IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) &&
+	    !bxt_dsi_pll_is_enabled(dev_priv))
+		goto out_put_power;
+
+	/* XXX: this only works for one DSI output */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		i915_reg_t ctrl_reg = IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv) ?
+			BXT_MIPI_PORT_CTRL(port) : MIPI_PORT_CTRL(port);
+		bool enabled = intel_de_read(dev_priv, ctrl_reg) & DPI_ENABLE;
+
+		/*
+		 * Due to some hardware limitations on VLV/CHV, the DPI enable
+		 * bit in port C control register does not get set. As a
+		 * workaround, check pipe B conf instead.
+		 */
+		if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
+		    port == PORT_C)
+			enabled = intel_de_read(dev_priv, PIPECONF(PIPE_B)) & PIPECONF_ENABLE;
+
+		/* Try command mode if video mode not enabled */
+		if (!enabled) {
+			u32 tmp = intel_de_read(dev_priv,
+						MIPI_DSI_FUNC_PRG(port));
+			enabled = tmp & CMD_MODE_DATA_WIDTH_MASK;
+		}
+
+		if (!enabled)
+			continue;
+
+		if (!(intel_de_read(dev_priv, MIPI_DEVICE_READY(port)) & DEVICE_READY))
+			continue;
+
+		if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) {
+			u32 tmp = intel_de_read(dev_priv, MIPI_CTRL(port));
+			tmp &= BXT_PIPE_SELECT_MASK;
+			tmp >>= BXT_PIPE_SELECT_SHIFT;
+
+			if (drm_WARN_ON(&dev_priv->drm, tmp > PIPE_C))
+				continue;
+
+			*pipe = tmp;
+		} else {
+			*pipe = port == PORT_A ? PIPE_A : PIPE_B;
+		}
+
+		active = true;
+		break;
+	}
+
+out_put_power:
+	intel_display_power_put(dev_priv, encoder->power_domain, wakeref);
+
+	return active;
+}
+
+static void bxt_dsi_get_pipe_config(struct intel_encoder *encoder,
+				    struct intel_crtc_state *pipe_config)
+{
+	struct drm_device *dev = encoder->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct drm_display_mode *adjusted_mode =
+					&pipe_config->hw.adjusted_mode;
+	struct drm_display_mode *adjusted_mode_sw;
+	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	unsigned int lane_count = intel_dsi->lane_count;
+	unsigned int bpp, fmt;
+	enum port port;
+	u16 hactive, hfp, hsync, hbp, vfp, vsync, vbp;
+	u16 hfp_sw, hsync_sw, hbp_sw;
+	u16 crtc_htotal_sw, crtc_hsync_start_sw, crtc_hsync_end_sw,
+				crtc_hblank_start_sw, crtc_hblank_end_sw;
+
+	/* FIXME: hw readout should not depend on SW state */
+	adjusted_mode_sw = &crtc->config->hw.adjusted_mode;
+
+	/*
+	 * Atleast one port is active as encoder->get_config called only if
+	 * encoder->get_hw_state() returns true.
+	 */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		if (intel_de_read(dev_priv, BXT_MIPI_PORT_CTRL(port)) & DPI_ENABLE)
+			break;
+	}
+
+	fmt = intel_de_read(dev_priv, MIPI_DSI_FUNC_PRG(port)) & VID_MODE_FORMAT_MASK;
+	bpp = mipi_dsi_pixel_format_to_bpp(
+			pixel_format_from_register_bits(fmt));
+
+	pipe_config->pipe_bpp = bdw_get_pipemisc_bpp(crtc);
+
+	/* Enable Frame time stamo based scanline reporting */
+	pipe_config->mode_flags |=
+		I915_MODE_FLAG_GET_SCANLINE_FROM_TIMESTAMP;
+
+	/* In terms of pixels */
+	adjusted_mode->crtc_hdisplay =
+				intel_de_read(dev_priv,
+				              BXT_MIPI_TRANS_HACTIVE(port));
+	adjusted_mode->crtc_vdisplay =
+				intel_de_read(dev_priv,
+				              BXT_MIPI_TRANS_VACTIVE(port));
+	adjusted_mode->crtc_vtotal =
+				intel_de_read(dev_priv,
+				              BXT_MIPI_TRANS_VTOTAL(port));
+
+	hactive = adjusted_mode->crtc_hdisplay;
+	hfp = intel_de_read(dev_priv, MIPI_HFP_COUNT(port));
+
+	/*
+	 * Meaningful for video mode non-burst sync pulse mode only,
+	 * can be zero for non-burst sync events and burst modes
+	 */
+	hsync = intel_de_read(dev_priv, MIPI_HSYNC_PADDING_COUNT(port));
+	hbp = intel_de_read(dev_priv, MIPI_HBP_COUNT(port));
+
+	/* harizontal values are in terms of high speed byte clock */
+	hfp = pixels_from_txbyteclkhs(hfp, bpp, lane_count,
+						intel_dsi->burst_mode_ratio);
+	hsync = pixels_from_txbyteclkhs(hsync, bpp, lane_count,
+						intel_dsi->burst_mode_ratio);
+	hbp = pixels_from_txbyteclkhs(hbp, bpp, lane_count,
+						intel_dsi->burst_mode_ratio);
+
+	if (intel_dsi->dual_link) {
+		hfp *= 2;
+		hsync *= 2;
+		hbp *= 2;
+	}
+
+	/* vertical values are in terms of lines */
+	vfp = intel_de_read(dev_priv, MIPI_VFP_COUNT(port));
+	vsync = intel_de_read(dev_priv, MIPI_VSYNC_PADDING_COUNT(port));
+	vbp = intel_de_read(dev_priv, MIPI_VBP_COUNT(port));
+
+	adjusted_mode->crtc_htotal = hactive + hfp + hsync + hbp;
+	adjusted_mode->crtc_hsync_start = hfp + adjusted_mode->crtc_hdisplay;
+	adjusted_mode->crtc_hsync_end = hsync + adjusted_mode->crtc_hsync_start;
+	adjusted_mode->crtc_hblank_start = adjusted_mode->crtc_hdisplay;
+	adjusted_mode->crtc_hblank_end = adjusted_mode->crtc_htotal;
+
+	adjusted_mode->crtc_vsync_start = vfp + adjusted_mode->crtc_vdisplay;
+	adjusted_mode->crtc_vsync_end = vsync + adjusted_mode->crtc_vsync_start;
+	adjusted_mode->crtc_vblank_start = adjusted_mode->crtc_vdisplay;
+	adjusted_mode->crtc_vblank_end = adjusted_mode->crtc_vtotal;
+
+	/*
+	 * In BXT DSI there is no regs programmed with few horizontal timings
+	 * in Pixels but txbyteclkhs.. So retrieval process adds some
+	 * ROUND_UP ERRORS in the process of PIXELS<==>txbyteclkhs.
+	 * Actually here for the given adjusted_mode, we are calculating the
+	 * value programmed to the port and then back to the horizontal timing
+	 * param in pixels. This is the expected value, including roundup errors
+	 * And if that is same as retrieved value from port, then
+	 * (HW state) adjusted_mode's horizontal timings are corrected to
+	 * match with SW state to nullify the errors.
+	 */
+	/* Calculating the value programmed to the Port register */
+	hfp_sw = adjusted_mode_sw->crtc_hsync_start -
+					adjusted_mode_sw->crtc_hdisplay;
+	hsync_sw = adjusted_mode_sw->crtc_hsync_end -
+					adjusted_mode_sw->crtc_hsync_start;
+	hbp_sw = adjusted_mode_sw->crtc_htotal -
+					adjusted_mode_sw->crtc_hsync_end;
+
+	if (intel_dsi->dual_link) {
+		hfp_sw /= 2;
+		hsync_sw /= 2;
+		hbp_sw /= 2;
+	}
+
+	hfp_sw = txbyteclkhs(hfp_sw, bpp, lane_count,
+						intel_dsi->burst_mode_ratio);
+	hsync_sw = txbyteclkhs(hsync_sw, bpp, lane_count,
+			    intel_dsi->burst_mode_ratio);
+	hbp_sw = txbyteclkhs(hbp_sw, bpp, lane_count,
+						intel_dsi->burst_mode_ratio);
+
+	/* Reverse calculating the adjusted mode parameters from port reg vals*/
+	hfp_sw = pixels_from_txbyteclkhs(hfp_sw, bpp, lane_count,
+						intel_dsi->burst_mode_ratio);
+	hsync_sw = pixels_from_txbyteclkhs(hsync_sw, bpp, lane_count,
+						intel_dsi->burst_mode_ratio);
+	hbp_sw = pixels_from_txbyteclkhs(hbp_sw, bpp, lane_count,
+						intel_dsi->burst_mode_ratio);
+
+	if (intel_dsi->dual_link) {
+		hfp_sw *= 2;
+		hsync_sw *= 2;
+		hbp_sw *= 2;
+	}
+
+	crtc_htotal_sw = adjusted_mode_sw->crtc_hdisplay + hfp_sw +
+							hsync_sw + hbp_sw;
+	crtc_hsync_start_sw = hfp_sw + adjusted_mode_sw->crtc_hdisplay;
+	crtc_hsync_end_sw = hsync_sw + crtc_hsync_start_sw;
+	crtc_hblank_start_sw = adjusted_mode_sw->crtc_hdisplay;
+	crtc_hblank_end_sw = crtc_htotal_sw;
+
+	if (adjusted_mode->crtc_htotal == crtc_htotal_sw)
+		adjusted_mode->crtc_htotal = adjusted_mode_sw->crtc_htotal;
+
+	if (adjusted_mode->crtc_hsync_start == crtc_hsync_start_sw)
+		adjusted_mode->crtc_hsync_start =
+					adjusted_mode_sw->crtc_hsync_start;
+
+	if (adjusted_mode->crtc_hsync_end == crtc_hsync_end_sw)
+		adjusted_mode->crtc_hsync_end =
+					adjusted_mode_sw->crtc_hsync_end;
+
+	if (adjusted_mode->crtc_hblank_start == crtc_hblank_start_sw)
+		adjusted_mode->crtc_hblank_start =
+					adjusted_mode_sw->crtc_hblank_start;
+
+	if (adjusted_mode->crtc_hblank_end == crtc_hblank_end_sw)
+		adjusted_mode->crtc_hblank_end =
+					adjusted_mode_sw->crtc_hblank_end;
+}
+
+static void intel_dsi_get_config(struct intel_encoder *encoder,
+				 struct intel_crtc_state *pipe_config)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	u32 pclk;
+
+	drm_dbg_kms(&dev_priv->drm, "\n");
+
+	pipe_config->output_types |= BIT(INTEL_OUTPUT_DSI);
+
+	if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) {
+		bxt_dsi_get_pipe_config(encoder, pipe_config);
+		pclk = bxt_dsi_get_pclk(encoder, pipe_config);
+	} else {
+		pclk = vlv_dsi_get_pclk(encoder, pipe_config);
+	}
+
+	pipe_config->port_clock = pclk;
+
+	/* FIXME definitely not right for burst/cmd mode/pixel overlap */
+	pipe_config->hw.adjusted_mode.crtc_clock = pclk;
+	if (intel_dsi->dual_link)
+		pipe_config->hw.adjusted_mode.crtc_clock *= 2;
+}
+
+/* return txclkesc cycles in terms of divider and duration in us */
+static u16 txclkesc(u32 divider, unsigned int us)
+{
+	switch (divider) {
+	case ESCAPE_CLOCK_DIVIDER_1:
+	default:
+		return 20 * us;
+	case ESCAPE_CLOCK_DIVIDER_2:
+		return 10 * us;
+	case ESCAPE_CLOCK_DIVIDER_4:
+		return 5 * us;
+	}
+}
+
+static void set_dsi_timings(struct drm_encoder *encoder,
+			    const struct drm_display_mode *adjusted_mode)
+{
+	struct drm_device *dev = encoder->dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(to_intel_encoder(encoder));
+	enum port port;
+	unsigned int bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
+	unsigned int lane_count = intel_dsi->lane_count;
+
+	u16 hactive, hfp, hsync, hbp, vfp, vsync, vbp;
+
+	hactive = adjusted_mode->crtc_hdisplay;
+	hfp = adjusted_mode->crtc_hsync_start - adjusted_mode->crtc_hdisplay;
+	hsync = adjusted_mode->crtc_hsync_end - adjusted_mode->crtc_hsync_start;
+	hbp = adjusted_mode->crtc_htotal - adjusted_mode->crtc_hsync_end;
+
+	if (intel_dsi->dual_link) {
+		hactive /= 2;
+		if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK)
+			hactive += intel_dsi->pixel_overlap;
+		hfp /= 2;
+		hsync /= 2;
+		hbp /= 2;
+	}
+
+	vfp = adjusted_mode->crtc_vsync_start - adjusted_mode->crtc_vdisplay;
+	vsync = adjusted_mode->crtc_vsync_end - adjusted_mode->crtc_vsync_start;
+	vbp = adjusted_mode->crtc_vtotal - adjusted_mode->crtc_vsync_end;
+
+	/* horizontal values are in terms of high speed byte clock */
+	hactive = txbyteclkhs(hactive, bpp, lane_count,
+			      intel_dsi->burst_mode_ratio);
+	hfp = txbyteclkhs(hfp, bpp, lane_count, intel_dsi->burst_mode_ratio);
+	hsync = txbyteclkhs(hsync, bpp, lane_count,
+			    intel_dsi->burst_mode_ratio);
+	hbp = txbyteclkhs(hbp, bpp, lane_count, intel_dsi->burst_mode_ratio);
+
+	for_each_dsi_port(port, intel_dsi->ports) {
+		if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) {
+			/*
+			 * Program hdisplay and vdisplay on MIPI transcoder.
+			 * This is different from calculated hactive and
+			 * vactive, as they are calculated per channel basis,
+			 * whereas these values should be based on resolution.
+			 */
+			intel_de_write(dev_priv, BXT_MIPI_TRANS_HACTIVE(port),
+				       adjusted_mode->crtc_hdisplay);
+			intel_de_write(dev_priv, BXT_MIPI_TRANS_VACTIVE(port),
+				       adjusted_mode->crtc_vdisplay);
+			intel_de_write(dev_priv, BXT_MIPI_TRANS_VTOTAL(port),
+				       adjusted_mode->crtc_vtotal);
+		}
+
+		intel_de_write(dev_priv, MIPI_HACTIVE_AREA_COUNT(port),
+			       hactive);
+		intel_de_write(dev_priv, MIPI_HFP_COUNT(port), hfp);
+
+		/* meaningful for video mode non-burst sync pulse mode only,
+		 * can be zero for non-burst sync events and burst modes */
+		intel_de_write(dev_priv, MIPI_HSYNC_PADDING_COUNT(port),
+			       hsync);
+		intel_de_write(dev_priv, MIPI_HBP_COUNT(port), hbp);
+
+		/* vertical values are in terms of lines */
+		intel_de_write(dev_priv, MIPI_VFP_COUNT(port), vfp);
+		intel_de_write(dev_priv, MIPI_VSYNC_PADDING_COUNT(port),
+			       vsync);
+		intel_de_write(dev_priv, MIPI_VBP_COUNT(port), vbp);
+	}
+}
+
+static u32 pixel_format_to_reg(enum mipi_dsi_pixel_format fmt)
+{
+	switch (fmt) {
+	case MIPI_DSI_FMT_RGB888:
+		return VID_MODE_FORMAT_RGB888;
+	case MIPI_DSI_FMT_RGB666:
+		return VID_MODE_FORMAT_RGB666;
+	case MIPI_DSI_FMT_RGB666_PACKED:
+		return VID_MODE_FORMAT_RGB666_PACKED;
+	case MIPI_DSI_FMT_RGB565:
+		return VID_MODE_FORMAT_RGB565;
+	default:
+		MISSING_CASE(fmt);
+		return VID_MODE_FORMAT_RGB666;
+	}
+}
+
+static void intel_dsi_prepare(struct intel_encoder *intel_encoder,
+			      const struct intel_crtc_state *pipe_config)
+{
+	struct drm_encoder *encoder = &intel_encoder->base;
+	struct drm_device *dev = encoder->dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(to_intel_encoder(encoder));
+	const struct drm_display_mode *adjusted_mode = &pipe_config->hw.adjusted_mode;
+	enum port port;
+	unsigned int bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
+	u32 val, tmp;
+	u16 mode_hdisplay;
+
+	drm_dbg_kms(&dev_priv->drm, "pipe %c\n", pipe_name(crtc->pipe));
+
+	mode_hdisplay = adjusted_mode->crtc_hdisplay;
+
+	if (intel_dsi->dual_link) {
+		mode_hdisplay /= 2;
+		if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK)
+			mode_hdisplay += intel_dsi->pixel_overlap;
+	}
+
+	for_each_dsi_port(port, intel_dsi->ports) {
+		if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+			/*
+			 * escape clock divider, 20MHz, shared for A and C.
+			 * device ready must be off when doing this! txclkesc?
+			 */
+			tmp = intel_de_read(dev_priv, MIPI_CTRL(PORT_A));
+			tmp &= ~ESCAPE_CLOCK_DIVIDER_MASK;
+			intel_de_write(dev_priv, MIPI_CTRL(PORT_A),
+				       tmp | ESCAPE_CLOCK_DIVIDER_1);
+
+			/* read request priority is per pipe */
+			tmp = intel_de_read(dev_priv, MIPI_CTRL(port));
+			tmp &= ~READ_REQUEST_PRIORITY_MASK;
+			intel_de_write(dev_priv, MIPI_CTRL(port),
+				       tmp | READ_REQUEST_PRIORITY_HIGH);
+		} else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) {
+			enum pipe pipe = crtc->pipe;
+
+			tmp = intel_de_read(dev_priv, MIPI_CTRL(port));
+			tmp &= ~BXT_PIPE_SELECT_MASK;
+
+			tmp |= BXT_PIPE_SELECT(pipe);
+			intel_de_write(dev_priv, MIPI_CTRL(port), tmp);
+		}
+
+		/* XXX: why here, why like this? handling in irq handler?! */
+		intel_de_write(dev_priv, MIPI_INTR_STAT(port), 0xffffffff);
+		intel_de_write(dev_priv, MIPI_INTR_EN(port), 0xffffffff);
+
+		intel_de_write(dev_priv, MIPI_DPHY_PARAM(port),
+			       intel_dsi->dphy_reg);
+
+		intel_de_write(dev_priv, MIPI_DPI_RESOLUTION(port),
+			       adjusted_mode->crtc_vdisplay << VERTICAL_ADDRESS_SHIFT | mode_hdisplay << HORIZONTAL_ADDRESS_SHIFT);
+	}
+
+	set_dsi_timings(encoder, adjusted_mode);
+
+	val = intel_dsi->lane_count << DATA_LANES_PRG_REG_SHIFT;
+	if (is_cmd_mode(intel_dsi)) {
+		val |= intel_dsi->channel << CMD_MODE_CHANNEL_NUMBER_SHIFT;
+		val |= CMD_MODE_DATA_WIDTH_8_BIT; /* XXX */
+	} else {
+		val |= intel_dsi->channel << VID_MODE_CHANNEL_NUMBER_SHIFT;
+		val |= pixel_format_to_reg(intel_dsi->pixel_format);
+	}
+
+	tmp = 0;
+	if (intel_dsi->eotp_pkt == 0)
+		tmp |= EOT_DISABLE;
+	if (intel_dsi->clock_stop)
+		tmp |= CLOCKSTOP;
+
+	if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) {
+		tmp |= BXT_DPHY_DEFEATURE_EN;
+		if (!is_cmd_mode(intel_dsi))
+			tmp |= BXT_DEFEATURE_DPI_FIFO_CTR;
+	}
+
+	for_each_dsi_port(port, intel_dsi->ports) {
+		intel_de_write(dev_priv, MIPI_DSI_FUNC_PRG(port), val);
+
+		/* timeouts for recovery. one frame IIUC. if counter expires,
+		 * EOT and stop state. */
+
+		/*
+		 * In burst mode, value greater than one DPI line Time in byte
+		 * clock (txbyteclkhs) To timeout this timer 1+ of the above
+		 * said value is recommended.
+		 *
+		 * In non-burst mode, Value greater than one DPI frame time in
+		 * byte clock(txbyteclkhs) To timeout this timer 1+ of the above
+		 * said value is recommended.
+		 *
+		 * In DBI only mode, value greater than one DBI frame time in
+		 * byte clock(txbyteclkhs) To timeout this timer 1+ of the above
+		 * said value is recommended.
+		 */
+
+		if (is_vid_mode(intel_dsi) &&
+			intel_dsi->video_mode == BURST_MODE) {
+			intel_de_write(dev_priv, MIPI_HS_TX_TIMEOUT(port),
+				       txbyteclkhs(adjusted_mode->crtc_htotal, bpp, intel_dsi->lane_count, intel_dsi->burst_mode_ratio) + 1);
+		} else {
+			intel_de_write(dev_priv, MIPI_HS_TX_TIMEOUT(port),
+				       txbyteclkhs(adjusted_mode->crtc_vtotal * adjusted_mode->crtc_htotal, bpp, intel_dsi->lane_count, intel_dsi->burst_mode_ratio) + 1);
+		}
+		intel_de_write(dev_priv, MIPI_LP_RX_TIMEOUT(port),
+			       intel_dsi->lp_rx_timeout);
+		intel_de_write(dev_priv, MIPI_TURN_AROUND_TIMEOUT(port),
+			       intel_dsi->turn_arnd_val);
+		intel_de_write(dev_priv, MIPI_DEVICE_RESET_TIMER(port),
+			       intel_dsi->rst_timer_val);
+
+		/* dphy stuff */
+
+		/* in terms of low power clock */
+		intel_de_write(dev_priv, MIPI_INIT_COUNT(port),
+			       txclkesc(intel_dsi->escape_clk_div, 100));
+
+		if ((IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) &&
+		    !intel_dsi->dual_link) {
+			/*
+			 * BXT spec says write MIPI_INIT_COUNT for
+			 * both the ports, even if only one is
+			 * getting used. So write the other port
+			 * if not in dual link mode.
+			 */
+			intel_de_write(dev_priv,
+				       MIPI_INIT_COUNT(port == PORT_A ? PORT_C : PORT_A),
+				       intel_dsi->init_count);
+		}
+
+		/* recovery disables */
+		intel_de_write(dev_priv, MIPI_EOT_DISABLE(port), tmp);
+
+		/* in terms of low power clock */
+		intel_de_write(dev_priv, MIPI_INIT_COUNT(port),
+			       intel_dsi->init_count);
+
+		/* in terms of txbyteclkhs. actual high to low switch +
+		 * MIPI_STOP_STATE_STALL * MIPI_LP_BYTECLK.
+		 *
+		 * XXX: write MIPI_STOP_STATE_STALL?
+		 */
+		intel_de_write(dev_priv, MIPI_HIGH_LOW_SWITCH_COUNT(port),
+			       intel_dsi->hs_to_lp_count);
+
+		/* XXX: low power clock equivalence in terms of byte clock.
+		 * the number of byte clocks occupied in one low power clock.
+		 * based on txbyteclkhs and txclkesc.
+		 * txclkesc time / txbyteclk time * (105 + MIPI_STOP_STATE_STALL
+		 * ) / 105.???
+		 */
+		intel_de_write(dev_priv, MIPI_LP_BYTECLK(port),
+			       intel_dsi->lp_byte_clk);
+
+		if (IS_GEMINILAKE(dev_priv)) {
+			intel_de_write(dev_priv, MIPI_TLPX_TIME_COUNT(port),
+				       intel_dsi->lp_byte_clk);
+			/* Shadow of DPHY reg */
+			intel_de_write(dev_priv, MIPI_CLK_LANE_TIMING(port),
+				       intel_dsi->dphy_reg);
+		}
+
+		/* the bw essential for transmitting 16 long packets containing
+		 * 252 bytes meant for dcs write memory command is programmed in
+		 * this register in terms of byte clocks. based on dsi transfer
+		 * rate and the number of lanes configured the time taken to
+		 * transmit 16 long packets in a dsi stream varies. */
+		intel_de_write(dev_priv, MIPI_DBI_BW_CTRL(port),
+			       intel_dsi->bw_timer);
+
+		intel_de_write(dev_priv, MIPI_CLK_LANE_SWITCH_TIME_CNT(port),
+			       intel_dsi->clk_lp_to_hs_count << LP_HS_SSW_CNT_SHIFT | intel_dsi->clk_hs_to_lp_count << HS_LP_PWR_SW_CNT_SHIFT);
+
+		if (is_vid_mode(intel_dsi)) {
+			u32 fmt = intel_dsi->video_frmt_cfg_bits | IP_TG_CONFIG;
+
+			/*
+			 * Some panels might have resolution which is not a
+			 * multiple of 64 like 1366 x 768. Enable RANDOM
+			 * resolution support for such panels by default.
+			 */
+			fmt |= RANDOM_DPI_DISPLAY_RESOLUTION;
+
+			switch (intel_dsi->video_mode) {
+			default:
+				MISSING_CASE(intel_dsi->video_mode);
+				fallthrough;
+			case NON_BURST_SYNC_EVENTS:
+				fmt |= VIDEO_MODE_NON_BURST_WITH_SYNC_EVENTS;
+				break;
+			case NON_BURST_SYNC_PULSE:
+				fmt |= VIDEO_MODE_NON_BURST_WITH_SYNC_PULSE;
+				break;
+			case BURST_MODE:
+				fmt |= VIDEO_MODE_BURST;
+				break;
+			}
+
+			intel_de_write(dev_priv, MIPI_VIDEO_MODE_FORMAT(port), fmt);
+		}
+	}
+}
+
+static void intel_dsi_unprepare(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	enum port port;
+	u32 val;
+
+	if (IS_GEMINILAKE(dev_priv))
+		return;
+
+	for_each_dsi_port(port, intel_dsi->ports) {
+		/* Panel commands can be sent when clock is in LP11 */
+		intel_de_write(dev_priv, MIPI_DEVICE_READY(port), 0x0);
+
+		if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
+			bxt_dsi_reset_clocks(encoder, port);
+		else
+			vlv_dsi_reset_clocks(encoder, port);
+		intel_de_write(dev_priv, MIPI_EOT_DISABLE(port), CLOCKSTOP);
+
+		val = intel_de_read(dev_priv, MIPI_DSI_FUNC_PRG(port));
+		val &= ~VID_MODE_FORMAT_MASK;
+		intel_de_write(dev_priv, MIPI_DSI_FUNC_PRG(port), val);
+
+		intel_de_write(dev_priv, MIPI_DEVICE_READY(port), 0x1);
+	}
+}
+
+static void intel_dsi_encoder_destroy(struct drm_encoder *encoder)
+{
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(to_intel_encoder(encoder));
+
+	intel_dsi_vbt_gpio_cleanup(intel_dsi);
+	intel_encoder_destroy(encoder);
+}
+
+static const struct drm_encoder_funcs intel_dsi_funcs = {
+	.destroy = intel_dsi_encoder_destroy,
+};
+
+static enum drm_mode_status vlv_dsi_mode_valid(struct drm_connector *connector,
+					       struct drm_display_mode *mode)
+{
+	struct drm_i915_private *i915 = to_i915(connector->dev);
+
+	if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915)) {
+		enum drm_mode_status status;
+
+		status = intel_cpu_transcoder_mode_valid(i915, mode);
+		if (status != MODE_OK)
+			return status;
+	}
+
+	return intel_dsi_mode_valid(connector, mode);
+}
+
+static const struct drm_connector_helper_funcs intel_dsi_connector_helper_funcs = {
+	.get_modes = intel_dsi_get_modes,
+	.mode_valid = vlv_dsi_mode_valid,
+	.atomic_check = intel_digital_connector_atomic_check,
+};
+
+static const struct drm_connector_funcs intel_dsi_connector_funcs = {
+	.detect = intel_panel_detect,
+	.late_register = intel_connector_register,
+	.early_unregister = intel_connector_unregister,
+	.destroy = intel_connector_destroy,
+	.fill_modes = drm_helper_probe_single_connector_modes,
+	.atomic_get_property = intel_digital_connector_atomic_get_property,
+	.atomic_set_property = intel_digital_connector_atomic_set_property,
+	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+	.atomic_duplicate_state = intel_digital_connector_duplicate_state,
+};
+
+static void vlv_dsi_add_properties(struct intel_connector *connector)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	const struct drm_display_mode *fixed_mode =
+		intel_panel_preferred_fixed_mode(connector);
+	u32 allowed_scalers;
+
+	allowed_scalers = BIT(DRM_MODE_SCALE_ASPECT) | BIT(DRM_MODE_SCALE_FULLSCREEN);
+	if (!HAS_GMCH(dev_priv))
+		allowed_scalers |= BIT(DRM_MODE_SCALE_CENTER);
+
+	drm_connector_attach_scaling_mode_property(&connector->base,
+						   allowed_scalers);
+
+	connector->base.state->scaling_mode = DRM_MODE_SCALE_ASPECT;
+
+	drm_connector_set_panel_orientation_with_quirk(&connector->base,
+						       intel_dsi_get_panel_orientation(connector),
+						       fixed_mode->hdisplay,
+						       fixed_mode->vdisplay);
+}
+
+#define NS_KHZ_RATIO		1000000
+
+#define PREPARE_CNT_MAX		0x3F
+#define EXIT_ZERO_CNT_MAX	0x3F
+#define CLK_ZERO_CNT_MAX	0xFF
+#define TRAIL_CNT_MAX		0x1F
+
+static void vlv_dphy_param_init(struct intel_dsi *intel_dsi)
+{
+	struct drm_device *dev = intel_dsi->base.base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_connector *connector = intel_dsi->attached_connector;
+	struct mipi_config *mipi_config = connector->panel.vbt.dsi.config;
+	u32 tlpx_ns, extra_byte_count, tlpx_ui;
+	u32 ui_num, ui_den;
+	u32 prepare_cnt, exit_zero_cnt, clk_zero_cnt, trail_cnt;
+	u32 ths_prepare_ns, tclk_trail_ns;
+	u32 tclk_prepare_clkzero, ths_prepare_hszero;
+	u32 lp_to_hs_switch, hs_to_lp_switch;
+	u32 mul;
+
+	tlpx_ns = intel_dsi_tlpx_ns(intel_dsi);
+
+	switch (intel_dsi->lane_count) {
+	case 1:
+	case 2:
+		extra_byte_count = 2;
+		break;
+	case 3:
+		extra_byte_count = 4;
+		break;
+	case 4:
+	default:
+		extra_byte_count = 3;
+		break;
+	}
+
+	/* in Kbps */
+	ui_num = NS_KHZ_RATIO;
+	ui_den = intel_dsi_bitrate(intel_dsi);
+
+	tclk_prepare_clkzero = mipi_config->tclk_prepare_clkzero;
+	ths_prepare_hszero = mipi_config->ths_prepare_hszero;
+
+	/*
+	 * B060
+	 * LP byte clock = TLPX/ (8UI)
+	 */
+	intel_dsi->lp_byte_clk = DIV_ROUND_UP(tlpx_ns * ui_den, 8 * ui_num);
+
+	/* DDR clock period = 2 * UI
+	 * UI(sec) = 1/(bitrate * 10^3) (bitrate is in KHZ)
+	 * UI(nsec) = 10^6 / bitrate
+	 * DDR clock period (nsec) = 2 * UI = (2 * 10^6)/ bitrate
+	 * DDR clock count  = ns_value / DDR clock period
+	 *
+	 * For GEMINILAKE dphy_param_reg will be programmed in terms of
+	 * HS byte clock count for other platform in HS ddr clock count
+	 */
+	mul = IS_GEMINILAKE(dev_priv) ? 8 : 2;
+	ths_prepare_ns = max(mipi_config->ths_prepare,
+			     mipi_config->tclk_prepare);
+
+	/* prepare count */
+	prepare_cnt = DIV_ROUND_UP(ths_prepare_ns * ui_den, ui_num * mul);
+
+	if (prepare_cnt > PREPARE_CNT_MAX) {
+		drm_dbg_kms(&dev_priv->drm, "prepare count too high %u\n",
+			    prepare_cnt);
+		prepare_cnt = PREPARE_CNT_MAX;
+	}
+
+	/* exit zero count */
+	exit_zero_cnt = DIV_ROUND_UP(
+				(ths_prepare_hszero - ths_prepare_ns) * ui_den,
+				ui_num * mul
+				);
+
+	/*
+	 * Exit zero is unified val ths_zero and ths_exit
+	 * minimum value for ths_exit = 110ns
+	 * min (exit_zero_cnt * 2) = 110/UI
+	 * exit_zero_cnt = 55/UI
+	 */
+	if (exit_zero_cnt < (55 * ui_den / ui_num) && (55 * ui_den) % ui_num)
+		exit_zero_cnt += 1;
+
+	if (exit_zero_cnt > EXIT_ZERO_CNT_MAX) {
+		drm_dbg_kms(&dev_priv->drm, "exit zero count too high %u\n",
+			    exit_zero_cnt);
+		exit_zero_cnt = EXIT_ZERO_CNT_MAX;
+	}
+
+	/* clk zero count */
+	clk_zero_cnt = DIV_ROUND_UP(
+				(tclk_prepare_clkzero -	ths_prepare_ns)
+				* ui_den, ui_num * mul);
+
+	if (clk_zero_cnt > CLK_ZERO_CNT_MAX) {
+		drm_dbg_kms(&dev_priv->drm, "clock zero count too high %u\n",
+			    clk_zero_cnt);
+		clk_zero_cnt = CLK_ZERO_CNT_MAX;
+	}
+
+	/* trail count */
+	tclk_trail_ns = max(mipi_config->tclk_trail, mipi_config->ths_trail);
+	trail_cnt = DIV_ROUND_UP(tclk_trail_ns * ui_den, ui_num * mul);
+
+	if (trail_cnt > TRAIL_CNT_MAX) {
+		drm_dbg_kms(&dev_priv->drm, "trail count too high %u\n",
+			    trail_cnt);
+		trail_cnt = TRAIL_CNT_MAX;
+	}
+
+	/* B080 */
+	intel_dsi->dphy_reg = exit_zero_cnt << 24 | trail_cnt << 16 |
+						clk_zero_cnt << 8 | prepare_cnt;
+
+	/*
+	 * LP to HS switch count = 4TLPX + PREP_COUNT * mul + EXIT_ZERO_COUNT *
+	 *					mul + 10UI + Extra Byte Count
+	 *
+	 * HS to LP switch count = THS-TRAIL + 2TLPX + Extra Byte Count
+	 * Extra Byte Count is calculated according to number of lanes.
+	 * High Low Switch Count is the Max of LP to HS and
+	 * HS to LP switch count
+	 *
+	 */
+	tlpx_ui = DIV_ROUND_UP(tlpx_ns * ui_den, ui_num);
+
+	/* B044 */
+	/* FIXME:
+	 * The comment above does not match with the code */
+	lp_to_hs_switch = DIV_ROUND_UP(4 * tlpx_ui + prepare_cnt * mul +
+						exit_zero_cnt * mul + 10, 8);
+
+	hs_to_lp_switch = DIV_ROUND_UP(mipi_config->ths_trail + 2 * tlpx_ui, 8);
+
+	intel_dsi->hs_to_lp_count = max(lp_to_hs_switch, hs_to_lp_switch);
+	intel_dsi->hs_to_lp_count += extra_byte_count;
+
+	/* B088 */
+	/* LP -> HS for clock lanes
+	 * LP clk sync + LP11 + LP01 + tclk_prepare + tclk_zero +
+	 *						extra byte count
+	 * 2TPLX + 1TLPX + 1 TPLX(in ns) + prepare_cnt * 2 + clk_zero_cnt *
+	 *					2(in UI) + extra byte count
+	 * In byteclks = (4TLPX + prepare_cnt * 2 + clk_zero_cnt *2 (in UI)) /
+	 *					8 + extra byte count
+	 */
+	intel_dsi->clk_lp_to_hs_count =
+		DIV_ROUND_UP(
+			4 * tlpx_ui + prepare_cnt * 2 +
+			clk_zero_cnt * 2,
+			8);
+
+	intel_dsi->clk_lp_to_hs_count += extra_byte_count;
+
+	/* HS->LP for Clock Lanes
+	 * Low Power clock synchronisations + 1Tx byteclk + tclk_trail +
+	 *						Extra byte count
+	 * 2TLPX + 8UI + (trail_count*2)(in UI) + Extra byte count
+	 * In byteclks = (2*TLpx(in UI) + trail_count*2 +8)(in UI)/8 +
+	 *						Extra byte count
+	 */
+	intel_dsi->clk_hs_to_lp_count =
+		DIV_ROUND_UP(2 * tlpx_ui + trail_cnt * 2 + 8,
+			8);
+	intel_dsi->clk_hs_to_lp_count += extra_byte_count;
+
+	intel_dsi_log_params(intel_dsi);
+}
+
+void vlv_dsi_init(struct drm_i915_private *dev_priv)
+{
+	struct drm_device *dev = &dev_priv->drm;
+	struct intel_dsi *intel_dsi;
+	struct intel_encoder *intel_encoder;
+	struct drm_encoder *encoder;
+	struct intel_connector *intel_connector;
+	struct drm_connector *connector;
+	struct drm_display_mode *current_mode;
+	enum port port;
+	enum pipe pipe;
+
+	drm_dbg_kms(&dev_priv->drm, "\n");
+
+	/* There is no detection method for MIPI so rely on VBT */
+	if (!intel_bios_is_dsi_present(dev_priv, &port))
+		return;
+
+	if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
+		dev_priv->display.dsi.mmio_base = BXT_MIPI_BASE;
+	else
+		dev_priv->display.dsi.mmio_base = VLV_MIPI_BASE;
+
+	intel_dsi = kzalloc(sizeof(*intel_dsi), GFP_KERNEL);
+	if (!intel_dsi)
+		return;
+
+	intel_connector = intel_connector_alloc();
+	if (!intel_connector) {
+		kfree(intel_dsi);
+		return;
+	}
+
+	intel_encoder = &intel_dsi->base;
+	encoder = &intel_encoder->base;
+	intel_dsi->attached_connector = intel_connector;
+
+	connector = &intel_connector->base;
+
+	drm_encoder_init(dev, encoder, &intel_dsi_funcs, DRM_MODE_ENCODER_DSI,
+			 "DSI %c", port_name(port));
+
+	intel_encoder->compute_config = intel_dsi_compute_config;
+	intel_encoder->pre_enable = intel_dsi_pre_enable;
+	if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
+		intel_encoder->enable = bxt_dsi_enable;
+	intel_encoder->disable = intel_dsi_disable;
+	intel_encoder->post_disable = intel_dsi_post_disable;
+	intel_encoder->get_hw_state = intel_dsi_get_hw_state;
+	intel_encoder->get_config = intel_dsi_get_config;
+	intel_encoder->update_pipe = intel_backlight_update;
+	intel_encoder->shutdown = intel_dsi_shutdown;
+
+	intel_connector->get_hw_state = intel_connector_get_hw_state;
+
+	intel_encoder->port = port;
+	intel_encoder->type = INTEL_OUTPUT_DSI;
+	intel_encoder->power_domain = POWER_DOMAIN_PORT_DSI;
+	intel_encoder->cloneable = 0;
+
+	/*
+	 * On BYT/CHV, pipe A maps to MIPI DSI port A, pipe B maps to MIPI DSI
+	 * port C. BXT isn't limited like this.
+	 */
+	if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
+		intel_encoder->pipe_mask = ~0;
+	else if (port == PORT_A)
+		intel_encoder->pipe_mask = BIT(PIPE_A);
+	else
+		intel_encoder->pipe_mask = BIT(PIPE_B);
+
+	intel_dsi->panel_power_off_time = ktime_get_boottime();
+
+	intel_bios_init_panel_late(dev_priv, &intel_connector->panel, NULL, NULL);
+
+	if (intel_connector->panel.vbt.dsi.config->dual_link)
+		intel_dsi->ports = BIT(PORT_A) | BIT(PORT_C);
+	else
+		intel_dsi->ports = BIT(port);
+
+	if (drm_WARN_ON(&dev_priv->drm, intel_connector->panel.vbt.dsi.bl_ports & ~intel_dsi->ports))
+		intel_connector->panel.vbt.dsi.bl_ports &= intel_dsi->ports;
+
+	if (drm_WARN_ON(&dev_priv->drm, intel_connector->panel.vbt.dsi.cabc_ports & ~intel_dsi->ports))
+		intel_connector->panel.vbt.dsi.cabc_ports &= intel_dsi->ports;
+
+	/* Create a DSI host (and a device) for each port. */
+	for_each_dsi_port(port, intel_dsi->ports) {
+		struct intel_dsi_host *host;
+
+		host = intel_dsi_host_init(intel_dsi, &intel_dsi_host_ops,
+					   port);
+		if (!host)
+			goto err;
+
+		intel_dsi->dsi_hosts[port] = host;
+	}
+
+	if (!intel_dsi_vbt_init(intel_dsi, MIPI_DSI_GENERIC_PANEL_ID)) {
+		drm_dbg_kms(&dev_priv->drm, "no device found\n");
+		goto err;
+	}
+
+	/* Use clock read-back from current hw-state for fastboot */
+	current_mode = intel_encoder_current_mode(intel_encoder);
+	if (current_mode) {
+		drm_dbg_kms(&dev_priv->drm, "Calculated pclk %d GOP %d\n",
+			    intel_dsi->pclk, current_mode->clock);
+		if (intel_fuzzy_clock_check(intel_dsi->pclk,
+					    current_mode->clock)) {
+			drm_dbg_kms(&dev_priv->drm, "Using GOP pclk\n");
+			intel_dsi->pclk = current_mode->clock;
+		}
+
+		kfree(current_mode);
+	}
+
+	vlv_dphy_param_init(intel_dsi);
+
+	intel_dsi_vbt_gpio_init(intel_dsi,
+				intel_dsi_get_hw_state(intel_encoder, &pipe));
+
+	drm_connector_init(dev, connector, &intel_dsi_connector_funcs,
+			   DRM_MODE_CONNECTOR_DSI);
+
+	drm_connector_helper_add(connector, &intel_dsi_connector_helper_funcs);
+
+	connector->display_info.subpixel_order = SubPixelHorizontalRGB; /*XXX*/
+	connector->interlace_allowed = false;
+	connector->doublescan_allowed = false;
+
+	intel_connector_attach_encoder(intel_connector, intel_encoder);
+
+	mutex_lock(&dev->mode_config.mutex);
+	intel_panel_add_vbt_lfp_fixed_mode(intel_connector);
+	mutex_unlock(&dev->mode_config.mutex);
+
+	if (!intel_panel_preferred_fixed_mode(intel_connector)) {
+		drm_dbg_kms(&dev_priv->drm, "no fixed mode\n");
+		goto err_cleanup_connector;
+	}
+
+	intel_panel_init(intel_connector);
+
+	intel_backlight_setup(intel_connector, INVALID_PIPE);
+
+	vlv_dsi_add_properties(intel_connector);
+
+	return;
+
+err_cleanup_connector:
+	drm_connector_cleanup(&intel_connector->base);
+err:
+	drm_encoder_cleanup(&intel_encoder->base);
+	kfree(intel_dsi);
+	kfree(intel_connector);
+}
diff --git a/drivers/gpu/drm/i915/display/vlv_dsi.h b/drivers/gpu/drm/i915/display/vlv_dsi.h
new file mode 100644
index 000000000..0c2b279df
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/vlv_dsi.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#ifndef __VLV_DSI_H__
+#define __VLV_DSI_H__
+
+#include <linux/types.h>
+
+enum port;
+struct drm_i915_private;
+struct intel_dsi;
+
+void vlv_dsi_wait_for_fifo_empty(struct intel_dsi *intel_dsi, enum port port);
+enum mipi_dsi_pixel_format pixel_format_from_register_bits(u32 fmt);
+void vlv_dsi_init(struct drm_i915_private *dev_priv);
+
+#endif /* __VLV_DSI_H__ */
diff --git a/drivers/gpu/drm/i915/display/vlv_dsi_pll.c b/drivers/gpu/drm/i915/display/vlv_dsi_pll.c
new file mode 100644
index 000000000..af7402127
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/vlv_dsi_pll.c
@@ -0,0 +1,624 @@
+/*
+ * Copyright © 2013 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *	Shobhit Kumar <shobhit.kumar@intel.com>
+ *	Yogesh Mohan Marimuthu <yogesh.mohan.marimuthu@intel.com>
+ */
+
+#include <linux/kernel.h>
+#include <linux/string_helpers.h>
+
+#include "i915_drv.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_dsi.h"
+#include "vlv_dsi_pll.h"
+#include "vlv_dsi_pll_regs.h"
+#include "vlv_sideband.h"
+
+static const u16 lfsr_converts[] = {
+	426, 469, 234, 373, 442, 221, 110, 311, 411,		/* 62 - 70 */
+	461, 486, 243, 377, 188, 350, 175, 343, 427, 213,	/* 71 - 80 */
+	106, 53, 282, 397, 454, 227, 113, 56, 284, 142,		/* 81 - 90 */
+	71, 35, 273, 136, 324, 418, 465, 488, 500, 506		/* 91 - 100 */
+};
+
+/* Get DSI clock from pixel clock */
+static u32 dsi_clk_from_pclk(u32 pclk, enum mipi_dsi_pixel_format fmt,
+			     int lane_count)
+{
+	u32 dsi_clk_khz;
+	u32 bpp = mipi_dsi_pixel_format_to_bpp(fmt);
+
+	/* DSI data rate = pixel clock * bits per pixel / lane count
+	   pixel clock is converted from KHz to Hz */
+	dsi_clk_khz = DIV_ROUND_CLOSEST(pclk * bpp, lane_count);
+
+	return dsi_clk_khz;
+}
+
+static int dsi_calc_mnp(struct drm_i915_private *dev_priv,
+			struct intel_crtc_state *config,
+			int target_dsi_clk)
+{
+	unsigned int m_min, m_max, p_min = 2, p_max = 6;
+	unsigned int m, n, p;
+	unsigned int calc_m, calc_p;
+	int delta, ref_clk;
+
+	/* target_dsi_clk is expected in kHz */
+	if (target_dsi_clk < 300000 || target_dsi_clk > 1150000) {
+		drm_err(&dev_priv->drm, "DSI CLK Out of Range\n");
+		return -ECHRNG;
+	}
+
+	if (IS_CHERRYVIEW(dev_priv)) {
+		ref_clk = 100000;
+		n = 4;
+		m_min = 70;
+		m_max = 96;
+	} else {
+		ref_clk = 25000;
+		n = 1;
+		m_min = 62;
+		m_max = 92;
+	}
+
+	calc_p = p_min;
+	calc_m = m_min;
+	delta = abs(target_dsi_clk - (m_min * ref_clk) / (p_min * n));
+
+	for (m = m_min; m <= m_max && delta; m++) {
+		for (p = p_min; p <= p_max && delta; p++) {
+			/*
+			 * Find the optimal m and p divisors with minimal delta
+			 * +/- the required clock
+			 */
+			int calc_dsi_clk = (m * ref_clk) / (p * n);
+			int d = abs(target_dsi_clk - calc_dsi_clk);
+			if (d < delta) {
+				delta = d;
+				calc_m = m;
+				calc_p = p;
+			}
+		}
+	}
+
+	/* register has log2(N1), this works fine for powers of two */
+	config->dsi_pll.ctrl = 1 << (DSI_PLL_P1_POST_DIV_SHIFT + calc_p - 2);
+	config->dsi_pll.div =
+		(ffs(n) - 1) << DSI_PLL_N1_DIV_SHIFT |
+		(u32)lfsr_converts[calc_m - 62] << DSI_PLL_M1_DIV_SHIFT;
+
+	return 0;
+}
+
+static int vlv_dsi_pclk(struct intel_encoder *encoder,
+			struct intel_crtc_state *config)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	int bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
+	u32 dsi_clock;
+	u32 pll_ctl, pll_div;
+	u32 m = 0, p = 0, n;
+	int refclk = IS_CHERRYVIEW(dev_priv) ? 100000 : 25000;
+	int i;
+
+	pll_ctl = config->dsi_pll.ctrl;
+	pll_div = config->dsi_pll.div;
+
+	/* mask out other bits and extract the P1 divisor */
+	pll_ctl &= DSI_PLL_P1_POST_DIV_MASK;
+	pll_ctl = pll_ctl >> (DSI_PLL_P1_POST_DIV_SHIFT - 2);
+
+	/* N1 divisor */
+	n = (pll_div & DSI_PLL_N1_DIV_MASK) >> DSI_PLL_N1_DIV_SHIFT;
+	n = 1 << n; /* register has log2(N1) */
+
+	/* mask out the other bits and extract the M1 divisor */
+	pll_div &= DSI_PLL_M1_DIV_MASK;
+	pll_div = pll_div >> DSI_PLL_M1_DIV_SHIFT;
+
+	while (pll_ctl) {
+		pll_ctl = pll_ctl >> 1;
+		p++;
+	}
+	p--;
+
+	if (!p) {
+		drm_err(&dev_priv->drm, "wrong P1 divisor\n");
+		return 0;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(lfsr_converts); i++) {
+		if (lfsr_converts[i] == pll_div)
+			break;
+	}
+
+	if (i == ARRAY_SIZE(lfsr_converts)) {
+		drm_err(&dev_priv->drm, "wrong m_seed programmed\n");
+		return 0;
+	}
+
+	m = i + 62;
+
+	dsi_clock = (m * refclk) / (p * n);
+
+	return DIV_ROUND_CLOSEST(dsi_clock * intel_dsi->lane_count, bpp);
+}
+
+/*
+ * XXX: The muxing and gating is hard coded for now. Need to add support for
+ * sharing PLLs with two DSI outputs.
+ */
+int vlv_dsi_pll_compute(struct intel_encoder *encoder,
+			struct intel_crtc_state *config)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	int pclk, dsi_clk, ret;
+
+	dsi_clk = dsi_clk_from_pclk(intel_dsi->pclk, intel_dsi->pixel_format,
+				    intel_dsi->lane_count);
+
+	ret = dsi_calc_mnp(dev_priv, config, dsi_clk);
+	if (ret) {
+		drm_dbg_kms(&dev_priv->drm, "dsi_calc_mnp failed\n");
+		return ret;
+	}
+
+	if (intel_dsi->ports & (1 << PORT_A))
+		config->dsi_pll.ctrl |= DSI_PLL_CLK_GATE_DSI0_DSIPLL;
+
+	if (intel_dsi->ports & (1 << PORT_C))
+		config->dsi_pll.ctrl |= DSI_PLL_CLK_GATE_DSI1_DSIPLL;
+
+	config->dsi_pll.ctrl |= DSI_PLL_VCO_EN;
+
+	drm_dbg_kms(&dev_priv->drm, "dsi pll div %08x, ctrl %08x\n",
+		    config->dsi_pll.div, config->dsi_pll.ctrl);
+
+	pclk = vlv_dsi_pclk(encoder, config);
+	config->port_clock = pclk;
+
+	/* FIXME definitely not right for burst/cmd mode/pixel overlap */
+	config->hw.adjusted_mode.crtc_clock = pclk;
+	if (intel_dsi->dual_link)
+		config->hw.adjusted_mode.crtc_clock *= 2;
+
+	return 0;
+}
+
+void vlv_dsi_pll_enable(struct intel_encoder *encoder,
+			const struct intel_crtc_state *config)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+
+	drm_dbg_kms(&dev_priv->drm, "\n");
+
+	vlv_cck_get(dev_priv);
+
+	vlv_cck_write(dev_priv, CCK_REG_DSI_PLL_CONTROL, 0);
+	vlv_cck_write(dev_priv, CCK_REG_DSI_PLL_DIVIDER, config->dsi_pll.div);
+	vlv_cck_write(dev_priv, CCK_REG_DSI_PLL_CONTROL,
+		      config->dsi_pll.ctrl & ~DSI_PLL_VCO_EN);
+
+	/* wait at least 0.5 us after ungating before enabling VCO,
+	 * allow hrtimer subsystem optimization by relaxing timing
+	 */
+	usleep_range(10, 50);
+
+	vlv_cck_write(dev_priv, CCK_REG_DSI_PLL_CONTROL, config->dsi_pll.ctrl);
+
+	if (wait_for(vlv_cck_read(dev_priv, CCK_REG_DSI_PLL_CONTROL) &
+						DSI_PLL_LOCK, 20)) {
+
+		vlv_cck_put(dev_priv);
+		drm_err(&dev_priv->drm, "DSI PLL lock failed\n");
+		return;
+	}
+	vlv_cck_put(dev_priv);
+
+	drm_dbg_kms(&dev_priv->drm, "DSI PLL locked\n");
+}
+
+void vlv_dsi_pll_disable(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	u32 tmp;
+
+	drm_dbg_kms(&dev_priv->drm, "\n");
+
+	vlv_cck_get(dev_priv);
+
+	tmp = vlv_cck_read(dev_priv, CCK_REG_DSI_PLL_CONTROL);
+	tmp &= ~DSI_PLL_VCO_EN;
+	tmp |= DSI_PLL_LDO_GATE;
+	vlv_cck_write(dev_priv, CCK_REG_DSI_PLL_CONTROL, tmp);
+
+	vlv_cck_put(dev_priv);
+}
+
+bool bxt_dsi_pll_is_enabled(struct drm_i915_private *dev_priv)
+{
+	bool enabled;
+	u32 val;
+	u32 mask;
+
+	mask = BXT_DSI_PLL_DO_ENABLE | BXT_DSI_PLL_LOCKED;
+	val = intel_de_read(dev_priv, BXT_DSI_PLL_ENABLE);
+	enabled = (val & mask) == mask;
+
+	if (!enabled)
+		return false;
+
+	/*
+	 * Dividers must be programmed with valid values. As per BSEPC, for
+	 * GEMINLAKE only PORT A divider values are checked while for BXT
+	 * both divider values are validated. Check this here for
+	 * paranoia, since BIOS is known to misconfigure PLLs in this way at
+	 * times, and since accessing DSI registers with invalid dividers
+	 * causes a system hang.
+	 */
+	val = intel_de_read(dev_priv, BXT_DSI_PLL_CTL);
+	if (IS_GEMINILAKE(dev_priv)) {
+		if (!(val & BXT_DSIA_16X_MASK)) {
+			drm_dbg(&dev_priv->drm,
+				"Invalid PLL divider (%08x)\n", val);
+			enabled = false;
+		}
+	} else {
+		if (!(val & BXT_DSIA_16X_MASK) || !(val & BXT_DSIC_16X_MASK)) {
+			drm_dbg(&dev_priv->drm,
+				"Invalid PLL divider (%08x)\n", val);
+			enabled = false;
+		}
+	}
+
+	return enabled;
+}
+
+void bxt_dsi_pll_disable(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	u32 val;
+
+	drm_dbg_kms(&dev_priv->drm, "\n");
+
+	val = intel_de_read(dev_priv, BXT_DSI_PLL_ENABLE);
+	val &= ~BXT_DSI_PLL_DO_ENABLE;
+	intel_de_write(dev_priv, BXT_DSI_PLL_ENABLE, val);
+
+	/*
+	 * PLL lock should deassert within 200us.
+	 * Wait up to 1ms before timing out.
+	 */
+	if (intel_de_wait_for_clear(dev_priv, BXT_DSI_PLL_ENABLE,
+				    BXT_DSI_PLL_LOCKED, 1))
+		drm_err(&dev_priv->drm,
+			"Timeout waiting for PLL lock deassertion\n");
+}
+
+u32 vlv_dsi_get_pclk(struct intel_encoder *encoder,
+		     struct intel_crtc_state *config)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	u32 pll_ctl, pll_div;
+
+	drm_dbg_kms(&dev_priv->drm, "\n");
+
+	vlv_cck_get(dev_priv);
+	pll_ctl = vlv_cck_read(dev_priv, CCK_REG_DSI_PLL_CONTROL);
+	pll_div = vlv_cck_read(dev_priv, CCK_REG_DSI_PLL_DIVIDER);
+	vlv_cck_put(dev_priv);
+
+	config->dsi_pll.ctrl = pll_ctl & ~DSI_PLL_LOCK;
+	config->dsi_pll.div = pll_div;
+
+	return vlv_dsi_pclk(encoder, config);
+}
+
+static int bxt_dsi_pclk(struct intel_encoder *encoder,
+			const struct intel_crtc_state *config)
+{
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	int bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
+	u32 dsi_ratio, dsi_clk;
+
+	dsi_ratio = config->dsi_pll.ctrl & BXT_DSI_PLL_RATIO_MASK;
+	dsi_clk = (dsi_ratio * BXT_REF_CLOCK_KHZ) / 2;
+
+	return DIV_ROUND_CLOSEST(dsi_clk * intel_dsi->lane_count, bpp);
+}
+
+u32 bxt_dsi_get_pclk(struct intel_encoder *encoder,
+		     struct intel_crtc_state *config)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	u32 pclk;
+
+	config->dsi_pll.ctrl = intel_de_read(dev_priv, BXT_DSI_PLL_CTL);
+
+	pclk = bxt_dsi_pclk(encoder, config);
+
+	drm_dbg(&dev_priv->drm, "Calculated pclk=%u\n", pclk);
+	return pclk;
+}
+
+void vlv_dsi_reset_clocks(struct intel_encoder *encoder, enum port port)
+{
+	u32 temp;
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+
+	temp = intel_de_read(dev_priv, MIPI_CTRL(port));
+	temp &= ~ESCAPE_CLOCK_DIVIDER_MASK;
+	intel_de_write(dev_priv, MIPI_CTRL(port),
+		       temp | intel_dsi->escape_clk_div << ESCAPE_CLOCK_DIVIDER_SHIFT);
+}
+
+static void glk_dsi_program_esc_clock(struct drm_device *dev,
+				   const struct intel_crtc_state *config)
+{
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	u32 dsi_rate = 0;
+	u32 pll_ratio = 0;
+	u32 ddr_clk = 0;
+	u32 div1_value = 0;
+	u32 div2_value = 0;
+	u32 txesc1_div = 0;
+	u32 txesc2_div = 0;
+
+	pll_ratio = config->dsi_pll.ctrl & BXT_DSI_PLL_RATIO_MASK;
+
+	dsi_rate = (BXT_REF_CLOCK_KHZ * pll_ratio) / 2;
+
+	ddr_clk = dsi_rate / 2;
+
+	/* Variable divider value */
+	div1_value = DIV_ROUND_CLOSEST(ddr_clk, 20000);
+
+	/* Calculate TXESC1 divider */
+	if (div1_value <= 10)
+		txesc1_div = div1_value;
+	else if ((div1_value > 10) && (div1_value <= 20))
+		txesc1_div = DIV_ROUND_UP(div1_value, 2);
+	else if ((div1_value > 20) && (div1_value <= 30))
+		txesc1_div = DIV_ROUND_UP(div1_value, 4);
+	else if ((div1_value > 30) && (div1_value <= 40))
+		txesc1_div = DIV_ROUND_UP(div1_value, 6);
+	else if ((div1_value > 40) && (div1_value <= 50))
+		txesc1_div = DIV_ROUND_UP(div1_value, 8);
+	else
+		txesc1_div = 10;
+
+	/* Calculate TXESC2 divider */
+	div2_value = DIV_ROUND_UP(div1_value, txesc1_div);
+
+	txesc2_div = min_t(u32, div2_value, 10);
+
+	intel_de_write(dev_priv, MIPIO_TXESC_CLK_DIV1,
+		       (1 << (txesc1_div - 1)) & GLK_TX_ESC_CLK_DIV1_MASK);
+	intel_de_write(dev_priv, MIPIO_TXESC_CLK_DIV2,
+		       (1 << (txesc2_div - 1)) & GLK_TX_ESC_CLK_DIV2_MASK);
+}
+
+/* Program BXT Mipi clocks and dividers */
+static void bxt_dsi_program_clocks(struct drm_device *dev, enum port port,
+				   const struct intel_crtc_state *config)
+{
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	u32 tmp;
+	u32 dsi_rate = 0;
+	u32 pll_ratio = 0;
+	u32 rx_div;
+	u32 tx_div;
+	u32 rx_div_upper;
+	u32 rx_div_lower;
+	u32 mipi_8by3_divider;
+
+	/* Clear old configurations */
+	tmp = intel_de_read(dev_priv, BXT_MIPI_CLOCK_CTL);
+	tmp &= ~(BXT_MIPI_TX_ESCLK_FIXDIV_MASK(port));
+	tmp &= ~(BXT_MIPI_RX_ESCLK_UPPER_FIXDIV_MASK(port));
+	tmp &= ~(BXT_MIPI_8X_BY3_DIVIDER_MASK(port));
+	tmp &= ~(BXT_MIPI_RX_ESCLK_LOWER_FIXDIV_MASK(port));
+
+	/* Get the current DSI rate(actual) */
+	pll_ratio = config->dsi_pll.ctrl & BXT_DSI_PLL_RATIO_MASK;
+	dsi_rate = (BXT_REF_CLOCK_KHZ * pll_ratio) / 2;
+
+	/*
+	 * tx clock should be <= 20MHz and the div value must be
+	 * subtracted by 1 as per bspec
+	 */
+	tx_div = DIV_ROUND_UP(dsi_rate, 20000) - 1;
+	/*
+	 * rx clock should be <= 150MHz and the div value must be
+	 * subtracted by 1 as per bspec
+	 */
+	rx_div = DIV_ROUND_UP(dsi_rate, 150000) - 1;
+
+	/*
+	 * rx divider value needs to be updated in the
+	 * two differnt bit fields in the register hence splitting the
+	 * rx divider value accordingly
+	 */
+	rx_div_lower = rx_div & RX_DIVIDER_BIT_1_2;
+	rx_div_upper = (rx_div & RX_DIVIDER_BIT_3_4) >> 2;
+
+	mipi_8by3_divider = 0x2;
+
+	tmp |= BXT_MIPI_8X_BY3_DIVIDER(port, mipi_8by3_divider);
+	tmp |= BXT_MIPI_TX_ESCLK_DIVIDER(port, tx_div);
+	tmp |= BXT_MIPI_RX_ESCLK_LOWER_DIVIDER(port, rx_div_lower);
+	tmp |= BXT_MIPI_RX_ESCLK_UPPER_DIVIDER(port, rx_div_upper);
+
+	intel_de_write(dev_priv, BXT_MIPI_CLOCK_CTL, tmp);
+}
+
+int bxt_dsi_pll_compute(struct intel_encoder *encoder,
+			struct intel_crtc_state *config)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	u8 dsi_ratio, dsi_ratio_min, dsi_ratio_max;
+	u32 dsi_clk;
+	int pclk;
+
+	dsi_clk = dsi_clk_from_pclk(intel_dsi->pclk, intel_dsi->pixel_format,
+				    intel_dsi->lane_count);
+
+	/*
+	 * From clock diagram, to get PLL ratio divider, divide double of DSI
+	 * link rate (i.e., 2*8x=16x frequency value) by ref clock. Make sure to
+	 * round 'up' the result
+	 */
+	dsi_ratio = DIV_ROUND_UP(dsi_clk * 2, BXT_REF_CLOCK_KHZ);
+
+	if (IS_BROXTON(dev_priv)) {
+		dsi_ratio_min = BXT_DSI_PLL_RATIO_MIN;
+		dsi_ratio_max = BXT_DSI_PLL_RATIO_MAX;
+	} else {
+		dsi_ratio_min = GLK_DSI_PLL_RATIO_MIN;
+		dsi_ratio_max = GLK_DSI_PLL_RATIO_MAX;
+	}
+
+	if (dsi_ratio < dsi_ratio_min || dsi_ratio > dsi_ratio_max) {
+		drm_err(&dev_priv->drm,
+			"Can't get a suitable ratio from DSI PLL ratios\n");
+		return -ECHRNG;
+	} else
+		drm_dbg_kms(&dev_priv->drm, "DSI PLL calculation is Done!!\n");
+
+	/*
+	 * Program DSI ratio and Select MIPIC and MIPIA PLL output as 8x
+	 * Spec says both have to be programmed, even if one is not getting
+	 * used. Configure MIPI_CLOCK_CTL dividers in modeset
+	 */
+	config->dsi_pll.ctrl = dsi_ratio | BXT_DSIA_16X_BY2 | BXT_DSIC_16X_BY2;
+
+	/* As per recommendation from hardware team,
+	 * Prog PVD ratio =1 if dsi ratio <= 50
+	 */
+	if (IS_BROXTON(dev_priv) && dsi_ratio <= 50)
+		config->dsi_pll.ctrl |= BXT_DSI_PLL_PVD_RATIO_1;
+
+	pclk = bxt_dsi_pclk(encoder, config);
+	config->port_clock = pclk;
+
+	/* FIXME definitely not right for burst/cmd mode/pixel overlap */
+	config->hw.adjusted_mode.crtc_clock = pclk;
+	if (intel_dsi->dual_link)
+		config->hw.adjusted_mode.crtc_clock *= 2;
+
+	return 0;
+}
+
+void bxt_dsi_pll_enable(struct intel_encoder *encoder,
+			const struct intel_crtc_state *config)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+	enum port port;
+	u32 val;
+
+	drm_dbg_kms(&dev_priv->drm, "\n");
+
+	/* Configure PLL vales */
+	intel_de_write(dev_priv, BXT_DSI_PLL_CTL, config->dsi_pll.ctrl);
+	intel_de_posting_read(dev_priv, BXT_DSI_PLL_CTL);
+
+	/* Program TX, RX, Dphy clocks */
+	if (IS_BROXTON(dev_priv)) {
+		for_each_dsi_port(port, intel_dsi->ports)
+			bxt_dsi_program_clocks(encoder->base.dev, port, config);
+	} else {
+		glk_dsi_program_esc_clock(encoder->base.dev, config);
+	}
+
+	/* Enable DSI PLL */
+	val = intel_de_read(dev_priv, BXT_DSI_PLL_ENABLE);
+	val |= BXT_DSI_PLL_DO_ENABLE;
+	intel_de_write(dev_priv, BXT_DSI_PLL_ENABLE, val);
+
+	/* Timeout and fail if PLL not locked */
+	if (intel_de_wait_for_set(dev_priv, BXT_DSI_PLL_ENABLE,
+				  BXT_DSI_PLL_LOCKED, 1)) {
+		drm_err(&dev_priv->drm,
+			"Timed out waiting for DSI PLL to lock\n");
+		return;
+	}
+
+	drm_dbg_kms(&dev_priv->drm, "DSI PLL locked\n");
+}
+
+void bxt_dsi_reset_clocks(struct intel_encoder *encoder, enum port port)
+{
+	u32 tmp;
+	struct drm_device *dev = encoder->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+
+	/* Clear old configurations */
+	if (IS_BROXTON(dev_priv)) {
+		tmp = intel_de_read(dev_priv, BXT_MIPI_CLOCK_CTL);
+		tmp &= ~(BXT_MIPI_TX_ESCLK_FIXDIV_MASK(port));
+		tmp &= ~(BXT_MIPI_RX_ESCLK_UPPER_FIXDIV_MASK(port));
+		tmp &= ~(BXT_MIPI_8X_BY3_DIVIDER_MASK(port));
+		tmp &= ~(BXT_MIPI_RX_ESCLK_LOWER_FIXDIV_MASK(port));
+		intel_de_write(dev_priv, BXT_MIPI_CLOCK_CTL, tmp);
+	} else {
+		tmp = intel_de_read(dev_priv, MIPIO_TXESC_CLK_DIV1);
+		tmp &= ~GLK_TX_ESC_CLK_DIV1_MASK;
+		intel_de_write(dev_priv, MIPIO_TXESC_CLK_DIV1, tmp);
+
+		tmp = intel_de_read(dev_priv, MIPIO_TXESC_CLK_DIV2);
+		tmp &= ~GLK_TX_ESC_CLK_DIV2_MASK;
+		intel_de_write(dev_priv, MIPIO_TXESC_CLK_DIV2, tmp);
+	}
+	intel_de_write(dev_priv, MIPI_EOT_DISABLE(port), CLOCKSTOP);
+}
+
+static void assert_dsi_pll(struct drm_i915_private *i915, bool state)
+{
+	bool cur_state;
+
+	vlv_cck_get(i915);
+	cur_state = vlv_cck_read(i915, CCK_REG_DSI_PLL_CONTROL) & DSI_PLL_VCO_EN;
+	vlv_cck_put(i915);
+
+	I915_STATE_WARN(cur_state != state,
+			"DSI PLL state assertion failure (expected %s, current %s)\n",
+			str_on_off(state), str_on_off(cur_state));
+}
+
+void assert_dsi_pll_enabled(struct drm_i915_private *i915)
+{
+	assert_dsi_pll(i915, true);
+}
+
+void assert_dsi_pll_disabled(struct drm_i915_private *i915)
+{
+	assert_dsi_pll(i915, false);
+}
diff --git a/drivers/gpu/drm/i915/display/vlv_dsi_pll.h b/drivers/gpu/drm/i915/display/vlv_dsi_pll.h
new file mode 100644
index 000000000..ab9291ad1
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/vlv_dsi_pll.h
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#ifndef __VLV_DSI_PLL_H__
+#define __VLV_DSI_PLL_H__
+
+#include <linux/types.h>
+
+enum port;
+struct drm_i915_private;
+struct intel_crtc_state;
+struct intel_encoder;
+
+int vlv_dsi_pll_compute(struct intel_encoder *encoder,
+			struct intel_crtc_state *config);
+void vlv_dsi_pll_enable(struct intel_encoder *encoder,
+			const struct intel_crtc_state *config);
+void vlv_dsi_pll_disable(struct intel_encoder *encoder);
+u32 vlv_dsi_get_pclk(struct intel_encoder *encoder,
+		     struct intel_crtc_state *config);
+void vlv_dsi_reset_clocks(struct intel_encoder *encoder, enum port port);
+
+bool bxt_dsi_pll_is_enabled(struct drm_i915_private *dev_priv);
+int bxt_dsi_pll_compute(struct intel_encoder *encoder,
+			struct intel_crtc_state *config);
+void bxt_dsi_pll_enable(struct intel_encoder *encoder,
+			const struct intel_crtc_state *config);
+void bxt_dsi_pll_disable(struct intel_encoder *encoder);
+u32 bxt_dsi_get_pclk(struct intel_encoder *encoder,
+		     struct intel_crtc_state *config);
+void bxt_dsi_reset_clocks(struct intel_encoder *encoder, enum port port);
+
+void assert_dsi_pll_enabled(struct drm_i915_private *i915);
+void assert_dsi_pll_disabled(struct drm_i915_private *i915);
+
+#endif /* __VLV_DSI_PLL_H__ */
diff --git a/drivers/gpu/drm/i915/display/vlv_dsi_pll_regs.h b/drivers/gpu/drm/i915/display/vlv_dsi_pll_regs.h
new file mode 100644
index 000000000..45590e14e
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/vlv_dsi_pll_regs.h
@@ -0,0 +1,109 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#ifndef __VLV_DSI_PLL_REGS_H__
+#define __VLV_DSI_PLL_REGS_H__
+
+#include "vlv_dsi_regs.h"
+
+#define MIPIO_TXESC_CLK_DIV1			_MMIO(0x160004)
+#define  GLK_TX_ESC_CLK_DIV1_MASK			0x3FF
+#define MIPIO_TXESC_CLK_DIV2			_MMIO(0x160008)
+#define  GLK_TX_ESC_CLK_DIV2_MASK			0x3FF
+
+#define BXT_MAX_VAR_OUTPUT_KHZ			39500
+
+#define BXT_MIPI_CLOCK_CTL			_MMIO(0x46090)
+#define  BXT_MIPI1_DIV_SHIFT			26
+#define  BXT_MIPI2_DIV_SHIFT			10
+#define  BXT_MIPI_DIV_SHIFT(port)		\
+			_MIPI_PORT(port, BXT_MIPI1_DIV_SHIFT, \
+					BXT_MIPI2_DIV_SHIFT)
+
+/* TX control divider to select actual TX clock output from (8x/var) */
+#define  BXT_MIPI1_TX_ESCLK_SHIFT		26
+#define  BXT_MIPI2_TX_ESCLK_SHIFT		10
+#define  BXT_MIPI_TX_ESCLK_SHIFT(port)		\
+			_MIPI_PORT(port, BXT_MIPI1_TX_ESCLK_SHIFT, \
+					BXT_MIPI2_TX_ESCLK_SHIFT)
+#define  BXT_MIPI1_TX_ESCLK_FIXDIV_MASK		(0x3F << 26)
+#define  BXT_MIPI2_TX_ESCLK_FIXDIV_MASK		(0x3F << 10)
+#define  BXT_MIPI_TX_ESCLK_FIXDIV_MASK(port)	\
+			_MIPI_PORT(port, BXT_MIPI1_TX_ESCLK_FIXDIV_MASK, \
+					BXT_MIPI2_TX_ESCLK_FIXDIV_MASK)
+#define  BXT_MIPI_TX_ESCLK_DIVIDER(port, val)	\
+		(((val) & 0x3F) << BXT_MIPI_TX_ESCLK_SHIFT(port))
+/* RX upper control divider to select actual RX clock output from 8x */
+#define  BXT_MIPI1_RX_ESCLK_UPPER_SHIFT		21
+#define  BXT_MIPI2_RX_ESCLK_UPPER_SHIFT		5
+#define  BXT_MIPI_RX_ESCLK_UPPER_SHIFT(port)		\
+			_MIPI_PORT(port, BXT_MIPI1_RX_ESCLK_UPPER_SHIFT, \
+					BXT_MIPI2_RX_ESCLK_UPPER_SHIFT)
+#define  BXT_MIPI1_RX_ESCLK_UPPER_FIXDIV_MASK		(3 << 21)
+#define  BXT_MIPI2_RX_ESCLK_UPPER_FIXDIV_MASK		(3 << 5)
+#define  BXT_MIPI_RX_ESCLK_UPPER_FIXDIV_MASK(port)	\
+			_MIPI_PORT(port, BXT_MIPI1_RX_ESCLK_UPPER_FIXDIV_MASK, \
+					BXT_MIPI2_RX_ESCLK_UPPER_FIXDIV_MASK)
+#define  BXT_MIPI_RX_ESCLK_UPPER_DIVIDER(port, val)	\
+		(((val) & 3) << BXT_MIPI_RX_ESCLK_UPPER_SHIFT(port))
+/* 8/3X divider to select the actual 8/3X clock output from 8x */
+#define  BXT_MIPI1_8X_BY3_SHIFT                19
+#define  BXT_MIPI2_8X_BY3_SHIFT                3
+#define  BXT_MIPI_8X_BY3_SHIFT(port)          \
+			_MIPI_PORT(port, BXT_MIPI1_8X_BY3_SHIFT, \
+					BXT_MIPI2_8X_BY3_SHIFT)
+#define  BXT_MIPI1_8X_BY3_DIVIDER_MASK         (3 << 19)
+#define  BXT_MIPI2_8X_BY3_DIVIDER_MASK         (3 << 3)
+#define  BXT_MIPI_8X_BY3_DIVIDER_MASK(port)    \
+			_MIPI_PORT(port, BXT_MIPI1_8X_BY3_DIVIDER_MASK, \
+						BXT_MIPI2_8X_BY3_DIVIDER_MASK)
+#define  BXT_MIPI_8X_BY3_DIVIDER(port, val)    \
+			(((val) & 3) << BXT_MIPI_8X_BY3_SHIFT(port))
+/* RX lower control divider to select actual RX clock output from 8x */
+#define  BXT_MIPI1_RX_ESCLK_LOWER_SHIFT		16
+#define  BXT_MIPI2_RX_ESCLK_LOWER_SHIFT		0
+#define  BXT_MIPI_RX_ESCLK_LOWER_SHIFT(port)		\
+			_MIPI_PORT(port, BXT_MIPI1_RX_ESCLK_LOWER_SHIFT, \
+					BXT_MIPI2_RX_ESCLK_LOWER_SHIFT)
+#define  BXT_MIPI1_RX_ESCLK_LOWER_FIXDIV_MASK		(3 << 16)
+#define  BXT_MIPI2_RX_ESCLK_LOWER_FIXDIV_MASK		(3 << 0)
+#define  BXT_MIPI_RX_ESCLK_LOWER_FIXDIV_MASK(port)	\
+			_MIPI_PORT(port, BXT_MIPI1_RX_ESCLK_LOWER_FIXDIV_MASK, \
+					BXT_MIPI2_RX_ESCLK_LOWER_FIXDIV_MASK)
+#define  BXT_MIPI_RX_ESCLK_LOWER_DIVIDER(port, val)	\
+		(((val) & 3) << BXT_MIPI_RX_ESCLK_LOWER_SHIFT(port))
+
+#define RX_DIVIDER_BIT_1_2                     0x3
+#define RX_DIVIDER_BIT_3_4                     0xC
+
+#define BXT_DSI_PLL_CTL			_MMIO(0x161000)
+#define  BXT_DSI_PLL_PVD_RATIO_SHIFT	16
+#define  BXT_DSI_PLL_PVD_RATIO_MASK	(3 << BXT_DSI_PLL_PVD_RATIO_SHIFT)
+#define  BXT_DSI_PLL_PVD_RATIO_1	(1 << BXT_DSI_PLL_PVD_RATIO_SHIFT)
+#define  BXT_DSIC_16X_BY1		(0 << 10)
+#define  BXT_DSIC_16X_BY2		(1 << 10)
+#define  BXT_DSIC_16X_BY3		(2 << 10)
+#define  BXT_DSIC_16X_BY4		(3 << 10)
+#define  BXT_DSIC_16X_MASK		(3 << 10)
+#define  BXT_DSIA_16X_BY1		(0 << 8)
+#define  BXT_DSIA_16X_BY2		(1 << 8)
+#define  BXT_DSIA_16X_BY3		(2 << 8)
+#define  BXT_DSIA_16X_BY4		(3 << 8)
+#define  BXT_DSIA_16X_MASK		(3 << 8)
+#define  BXT_DSI_FREQ_SEL_SHIFT		8
+#define  BXT_DSI_FREQ_SEL_MASK		(0xF << BXT_DSI_FREQ_SEL_SHIFT)
+
+#define BXT_DSI_PLL_RATIO_MAX		0x7D
+#define BXT_DSI_PLL_RATIO_MIN		0x22
+#define GLK_DSI_PLL_RATIO_MAX		0x6F
+#define GLK_DSI_PLL_RATIO_MIN		0x22
+#define BXT_DSI_PLL_RATIO_MASK		0xFF
+#define BXT_REF_CLOCK_KHZ		19200
+
+#define BXT_DSI_PLL_ENABLE		_MMIO(0x46080)
+#define  BXT_DSI_PLL_DO_ENABLE		(1 << 31)
+#define  BXT_DSI_PLL_LOCKED		(1 << 30)
+
+#endif /* __VLV_DSI_PLL_REGS_H__ */
diff --git a/drivers/gpu/drm/i915/display/vlv_dsi_regs.h b/drivers/gpu/drm/i915/display/vlv_dsi_regs.h
new file mode 100644
index 000000000..e065b8f2e
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/vlv_dsi_regs.h
@@ -0,0 +1,482 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#ifndef __VLV_DSI_REGS_H__
+#define __VLV_DSI_REGS_H__
+
+#include "i915_reg_defs.h"
+
+#define VLV_MIPI_BASE			VLV_DISPLAY_BASE
+#define BXT_MIPI_BASE			0x60000
+
+#define _MIPI_MMIO_BASE(__i915) ((__i915)->display.dsi.mmio_base)
+
+#define _MIPI_PORT(port, a, c)	(((port) == PORT_A) ? a : c)	/* ports A and C only */
+#define _MMIO_MIPI(port, a, c)	_MMIO(_MIPI_PORT(port, a, c))
+
+/* BXT MIPI mode configure */
+#define  _BXT_MIPIA_TRANS_HACTIVE			0x6B0F8
+#define  _BXT_MIPIC_TRANS_HACTIVE			0x6B8F8
+#define  BXT_MIPI_TRANS_HACTIVE(tc)	_MMIO_MIPI(tc, \
+		_BXT_MIPIA_TRANS_HACTIVE, _BXT_MIPIC_TRANS_HACTIVE)
+
+#define  _BXT_MIPIA_TRANS_VACTIVE			0x6B0FC
+#define  _BXT_MIPIC_TRANS_VACTIVE			0x6B8FC
+#define  BXT_MIPI_TRANS_VACTIVE(tc)	_MMIO_MIPI(tc, \
+		_BXT_MIPIA_TRANS_VACTIVE, _BXT_MIPIC_TRANS_VACTIVE)
+
+#define  _BXT_MIPIA_TRANS_VTOTAL			0x6B100
+#define  _BXT_MIPIC_TRANS_VTOTAL			0x6B900
+#define  BXT_MIPI_TRANS_VTOTAL(tc)	_MMIO_MIPI(tc, \
+		_BXT_MIPIA_TRANS_VTOTAL, _BXT_MIPIC_TRANS_VTOTAL)
+
+#define BXT_P_DSI_REGULATOR_CFG			_MMIO(0x160020)
+#define  STAP_SELECT					(1 << 0)
+
+#define BXT_P_DSI_REGULATOR_TX_CTRL		_MMIO(0x160054)
+#define  HS_IO_CTRL_SELECT				(1 << 0)
+
+#define _MIPIA_PORT_CTRL			(VLV_DISPLAY_BASE + 0x61190)
+#define _MIPIC_PORT_CTRL			(VLV_DISPLAY_BASE + 0x61700)
+#define MIPI_PORT_CTRL(port)	_MMIO_MIPI(port, _MIPIA_PORT_CTRL, _MIPIC_PORT_CTRL)
+
+ /* BXT port control */
+#define _BXT_MIPIA_PORT_CTRL				0x6B0C0
+#define _BXT_MIPIC_PORT_CTRL				0x6B8C0
+#define BXT_MIPI_PORT_CTRL(tc)	_MMIO_MIPI(tc, _BXT_MIPIA_PORT_CTRL, _BXT_MIPIC_PORT_CTRL)
+
+#define  DPI_ENABLE					(1 << 31) /* A + C */
+#define  MIPIA_MIPI4DPHY_DELAY_COUNT_SHIFT		27
+#define  MIPIA_MIPI4DPHY_DELAY_COUNT_MASK		(0xf << 27)
+#define  DUAL_LINK_MODE_SHIFT				26
+#define  DUAL_LINK_MODE_MASK				(1 << 26)
+#define  DUAL_LINK_MODE_FRONT_BACK			(0 << 26)
+#define  DUAL_LINK_MODE_PIXEL_ALTERNATIVE		(1 << 26)
+#define  DITHERING_ENABLE				(1 << 25) /* A + C */
+#define  FLOPPED_HSTX					(1 << 23)
+#define  DE_INVERT					(1 << 19) /* XXX */
+#define  MIPIA_FLISDSI_DELAY_COUNT_SHIFT		18
+#define  MIPIA_FLISDSI_DELAY_COUNT_MASK			(0xf << 18)
+#define  AFE_LATCHOUT					(1 << 17)
+#define  LP_OUTPUT_HOLD					(1 << 16)
+#define  MIPIC_FLISDSI_DELAY_COUNT_HIGH_SHIFT		15
+#define  MIPIC_FLISDSI_DELAY_COUNT_HIGH_MASK		(1 << 15)
+#define  MIPIC_MIPI4DPHY_DELAY_COUNT_SHIFT		11
+#define  MIPIC_MIPI4DPHY_DELAY_COUNT_MASK		(0xf << 11)
+#define  CSB_SHIFT					9
+#define  CSB_MASK					(3 << 9)
+#define  CSB_20MHZ					(0 << 9)
+#define  CSB_10MHZ					(1 << 9)
+#define  CSB_40MHZ					(2 << 9)
+#define  BANDGAP_MASK					(1 << 8)
+#define  BANDGAP_PNW_CIRCUIT				(0 << 8)
+#define  BANDGAP_LNC_CIRCUIT				(1 << 8)
+#define  MIPIC_FLISDSI_DELAY_COUNT_LOW_SHIFT		5
+#define  MIPIC_FLISDSI_DELAY_COUNT_LOW_MASK		(7 << 5)
+#define  TEARING_EFFECT_DELAY				(1 << 4) /* A + C */
+#define  TEARING_EFFECT_SHIFT				2 /* A + C */
+#define  TEARING_EFFECT_MASK				(3 << 2)
+#define  TEARING_EFFECT_OFF				(0 << 2)
+#define  TEARING_EFFECT_DSI				(1 << 2)
+#define  TEARING_EFFECT_GPIO				(2 << 2)
+#define  LANE_CONFIGURATION_SHIFT			0
+#define  LANE_CONFIGURATION_MASK			(3 << 0)
+#define  LANE_CONFIGURATION_4LANE			(0 << 0)
+#define  LANE_CONFIGURATION_DUAL_LINK_A			(1 << 0)
+#define  LANE_CONFIGURATION_DUAL_LINK_B			(2 << 0)
+
+#define _MIPIA_TEARING_CTRL			(VLV_DISPLAY_BASE + 0x61194)
+#define _MIPIC_TEARING_CTRL			(VLV_DISPLAY_BASE + 0x61704)
+#define MIPI_TEARING_CTRL(port)			_MMIO_MIPI(port, _MIPIA_TEARING_CTRL, _MIPIC_TEARING_CTRL)
+#define  TEARING_EFFECT_DELAY_SHIFT			0
+#define  TEARING_EFFECT_DELAY_MASK			(0xffff << 0)
+
+/* XXX: all bits reserved */
+#define _MIPIA_AUTOPWG			(VLV_DISPLAY_BASE + 0x611a0)
+
+/* MIPI DSI Controller and D-PHY registers */
+
+#define _MIPIA_DEVICE_READY		(_MIPI_MMIO_BASE(dev_priv) + 0xb000)
+#define _MIPIC_DEVICE_READY		(_MIPI_MMIO_BASE(dev_priv) + 0xb800)
+#define MIPI_DEVICE_READY(port)		_MMIO_MIPI(port, _MIPIA_DEVICE_READY, _MIPIC_DEVICE_READY)
+#define  BUS_POSSESSION					(1 << 3) /* set to give bus to receiver */
+#define  ULPS_STATE_MASK				(3 << 1)
+#define  ULPS_STATE_ENTER				(2 << 1)
+#define  ULPS_STATE_EXIT				(1 << 1)
+#define  ULPS_STATE_NORMAL_OPERATION			(0 << 1)
+#define  DEVICE_READY					(1 << 0)
+
+#define _MIPIA_INTR_STAT		(_MIPI_MMIO_BASE(dev_priv) + 0xb004)
+#define _MIPIC_INTR_STAT		(_MIPI_MMIO_BASE(dev_priv) + 0xb804)
+#define MIPI_INTR_STAT(port)		_MMIO_MIPI(port, _MIPIA_INTR_STAT, _MIPIC_INTR_STAT)
+#define _MIPIA_INTR_EN			(_MIPI_MMIO_BASE(dev_priv) + 0xb008)
+#define _MIPIC_INTR_EN			(_MIPI_MMIO_BASE(dev_priv) + 0xb808)
+#define MIPI_INTR_EN(port)		_MMIO_MIPI(port, _MIPIA_INTR_EN, _MIPIC_INTR_EN)
+#define  TEARING_EFFECT					(1 << 31)
+#define  SPL_PKT_SENT_INTERRUPT				(1 << 30)
+#define  GEN_READ_DATA_AVAIL				(1 << 29)
+#define  LP_GENERIC_WR_FIFO_FULL			(1 << 28)
+#define  HS_GENERIC_WR_FIFO_FULL			(1 << 27)
+#define  RX_PROT_VIOLATION				(1 << 26)
+#define  RX_INVALID_TX_LENGTH				(1 << 25)
+#define  ACK_WITH_NO_ERROR				(1 << 24)
+#define  TURN_AROUND_ACK_TIMEOUT			(1 << 23)
+#define  LP_RX_TIMEOUT					(1 << 22)
+#define  HS_TX_TIMEOUT					(1 << 21)
+#define  DPI_FIFO_UNDERRUN				(1 << 20)
+#define  LOW_CONTENTION					(1 << 19)
+#define  HIGH_CONTENTION				(1 << 18)
+#define  TXDSI_VC_ID_INVALID				(1 << 17)
+#define  TXDSI_DATA_TYPE_NOT_RECOGNISED			(1 << 16)
+#define  TXCHECKSUM_ERROR				(1 << 15)
+#define  TXECC_MULTIBIT_ERROR				(1 << 14)
+#define  TXECC_SINGLE_BIT_ERROR				(1 << 13)
+#define  TXFALSE_CONTROL_ERROR				(1 << 12)
+#define  RXDSI_VC_ID_INVALID				(1 << 11)
+#define  RXDSI_DATA_TYPE_NOT_REGOGNISED			(1 << 10)
+#define  RXCHECKSUM_ERROR				(1 << 9)
+#define  RXECC_MULTIBIT_ERROR				(1 << 8)
+#define  RXECC_SINGLE_BIT_ERROR				(1 << 7)
+#define  RXFALSE_CONTROL_ERROR				(1 << 6)
+#define  RXHS_RECEIVE_TIMEOUT_ERROR			(1 << 5)
+#define  RX_LP_TX_SYNC_ERROR				(1 << 4)
+#define  RXEXCAPE_MODE_ENTRY_ERROR			(1 << 3)
+#define  RXEOT_SYNC_ERROR				(1 << 2)
+#define  RXSOT_SYNC_ERROR				(1 << 1)
+#define  RXSOT_ERROR					(1 << 0)
+
+#define _MIPIA_DSI_FUNC_PRG		(_MIPI_MMIO_BASE(dev_priv) + 0xb00c)
+#define _MIPIC_DSI_FUNC_PRG		(_MIPI_MMIO_BASE(dev_priv) + 0xb80c)
+#define MIPI_DSI_FUNC_PRG(port)		_MMIO_MIPI(port, _MIPIA_DSI_FUNC_PRG, _MIPIC_DSI_FUNC_PRG)
+#define  CMD_MODE_DATA_WIDTH_MASK			(7 << 13)
+#define  CMD_MODE_NOT_SUPPORTED				(0 << 13)
+#define  CMD_MODE_DATA_WIDTH_16_BIT			(1 << 13)
+#define  CMD_MODE_DATA_WIDTH_9_BIT			(2 << 13)
+#define  CMD_MODE_DATA_WIDTH_8_BIT			(3 << 13)
+#define  CMD_MODE_DATA_WIDTH_OPTION1			(4 << 13)
+#define  CMD_MODE_DATA_WIDTH_OPTION2			(5 << 13)
+#define  VID_MODE_FORMAT_MASK				(0xf << 7)
+#define  VID_MODE_NOT_SUPPORTED				(0 << 7)
+#define  VID_MODE_FORMAT_RGB565				(1 << 7)
+#define  VID_MODE_FORMAT_RGB666_PACKED			(2 << 7)
+#define  VID_MODE_FORMAT_RGB666				(3 << 7)
+#define  VID_MODE_FORMAT_RGB888				(4 << 7)
+#define  CMD_MODE_CHANNEL_NUMBER_SHIFT			5
+#define  CMD_MODE_CHANNEL_NUMBER_MASK			(3 << 5)
+#define  VID_MODE_CHANNEL_NUMBER_SHIFT			3
+#define  VID_MODE_CHANNEL_NUMBER_MASK			(3 << 3)
+#define  DATA_LANES_PRG_REG_SHIFT			0
+#define  DATA_LANES_PRG_REG_MASK			(7 << 0)
+
+#define _MIPIA_HS_TX_TIMEOUT		(_MIPI_MMIO_BASE(dev_priv) + 0xb010)
+#define _MIPIC_HS_TX_TIMEOUT		(_MIPI_MMIO_BASE(dev_priv) + 0xb810)
+#define MIPI_HS_TX_TIMEOUT(port)	_MMIO_MIPI(port, _MIPIA_HS_TX_TIMEOUT, _MIPIC_HS_TX_TIMEOUT)
+#define  HIGH_SPEED_TX_TIMEOUT_COUNTER_MASK		0xffffff
+
+#define _MIPIA_LP_RX_TIMEOUT		(_MIPI_MMIO_BASE(dev_priv) + 0xb014)
+#define _MIPIC_LP_RX_TIMEOUT		(_MIPI_MMIO_BASE(dev_priv) + 0xb814)
+#define MIPI_LP_RX_TIMEOUT(port)	_MMIO_MIPI(port, _MIPIA_LP_RX_TIMEOUT, _MIPIC_LP_RX_TIMEOUT)
+#define  LOW_POWER_RX_TIMEOUT_COUNTER_MASK		0xffffff
+
+#define _MIPIA_TURN_AROUND_TIMEOUT	(_MIPI_MMIO_BASE(dev_priv) + 0xb018)
+#define _MIPIC_TURN_AROUND_TIMEOUT	(_MIPI_MMIO_BASE(dev_priv) + 0xb818)
+#define MIPI_TURN_AROUND_TIMEOUT(port)	_MMIO_MIPI(port, _MIPIA_TURN_AROUND_TIMEOUT, _MIPIC_TURN_AROUND_TIMEOUT)
+#define  TURN_AROUND_TIMEOUT_MASK			0x3f
+
+#define _MIPIA_DEVICE_RESET_TIMER	(_MIPI_MMIO_BASE(dev_priv) + 0xb01c)
+#define _MIPIC_DEVICE_RESET_TIMER	(_MIPI_MMIO_BASE(dev_priv) + 0xb81c)
+#define MIPI_DEVICE_RESET_TIMER(port)	_MMIO_MIPI(port, _MIPIA_DEVICE_RESET_TIMER, _MIPIC_DEVICE_RESET_TIMER)
+#define  DEVICE_RESET_TIMER_MASK			0xffff
+
+#define _MIPIA_DPI_RESOLUTION		(_MIPI_MMIO_BASE(dev_priv) + 0xb020)
+#define _MIPIC_DPI_RESOLUTION		(_MIPI_MMIO_BASE(dev_priv) + 0xb820)
+#define MIPI_DPI_RESOLUTION(port)	_MMIO_MIPI(port, _MIPIA_DPI_RESOLUTION, _MIPIC_DPI_RESOLUTION)
+#define  VERTICAL_ADDRESS_SHIFT				16
+#define  VERTICAL_ADDRESS_MASK				(0xffff << 16)
+#define  HORIZONTAL_ADDRESS_SHIFT			0
+#define  HORIZONTAL_ADDRESS_MASK			0xffff
+
+#define _MIPIA_DBI_FIFO_THROTTLE	(_MIPI_MMIO_BASE(dev_priv) + 0xb024)
+#define _MIPIC_DBI_FIFO_THROTTLE	(_MIPI_MMIO_BASE(dev_priv) + 0xb824)
+#define MIPI_DBI_FIFO_THROTTLE(port)	_MMIO_MIPI(port, _MIPIA_DBI_FIFO_THROTTLE, _MIPIC_DBI_FIFO_THROTTLE)
+#define  DBI_FIFO_EMPTY_HALF				(0 << 0)
+#define  DBI_FIFO_EMPTY_QUARTER				(1 << 0)
+#define  DBI_FIFO_EMPTY_7_LOCATIONS			(2 << 0)
+
+/* regs below are bits 15:0 */
+#define _MIPIA_HSYNC_PADDING_COUNT	(_MIPI_MMIO_BASE(dev_priv) + 0xb028)
+#define _MIPIC_HSYNC_PADDING_COUNT	(_MIPI_MMIO_BASE(dev_priv) + 0xb828)
+#define MIPI_HSYNC_PADDING_COUNT(port)	_MMIO_MIPI(port, _MIPIA_HSYNC_PADDING_COUNT, _MIPIC_HSYNC_PADDING_COUNT)
+
+#define _MIPIA_HBP_COUNT		(_MIPI_MMIO_BASE(dev_priv) + 0xb02c)
+#define _MIPIC_HBP_COUNT		(_MIPI_MMIO_BASE(dev_priv) + 0xb82c)
+#define MIPI_HBP_COUNT(port)		_MMIO_MIPI(port, _MIPIA_HBP_COUNT, _MIPIC_HBP_COUNT)
+
+#define _MIPIA_HFP_COUNT		(_MIPI_MMIO_BASE(dev_priv) + 0xb030)
+#define _MIPIC_HFP_COUNT		(_MIPI_MMIO_BASE(dev_priv) + 0xb830)
+#define MIPI_HFP_COUNT(port)		_MMIO_MIPI(port, _MIPIA_HFP_COUNT, _MIPIC_HFP_COUNT)
+
+#define _MIPIA_HACTIVE_AREA_COUNT	(_MIPI_MMIO_BASE(dev_priv) + 0xb034)
+#define _MIPIC_HACTIVE_AREA_COUNT	(_MIPI_MMIO_BASE(dev_priv) + 0xb834)
+#define MIPI_HACTIVE_AREA_COUNT(port)	_MMIO_MIPI(port, _MIPIA_HACTIVE_AREA_COUNT, _MIPIC_HACTIVE_AREA_COUNT)
+
+#define _MIPIA_VSYNC_PADDING_COUNT	(_MIPI_MMIO_BASE(dev_priv) + 0xb038)
+#define _MIPIC_VSYNC_PADDING_COUNT	(_MIPI_MMIO_BASE(dev_priv) + 0xb838)
+#define MIPI_VSYNC_PADDING_COUNT(port)	_MMIO_MIPI(port, _MIPIA_VSYNC_PADDING_COUNT, _MIPIC_VSYNC_PADDING_COUNT)
+
+#define _MIPIA_VBP_COUNT		(_MIPI_MMIO_BASE(dev_priv) + 0xb03c)
+#define _MIPIC_VBP_COUNT		(_MIPI_MMIO_BASE(dev_priv) + 0xb83c)
+#define MIPI_VBP_COUNT(port)		_MMIO_MIPI(port, _MIPIA_VBP_COUNT, _MIPIC_VBP_COUNT)
+
+#define _MIPIA_VFP_COUNT		(_MIPI_MMIO_BASE(dev_priv) + 0xb040)
+#define _MIPIC_VFP_COUNT		(_MIPI_MMIO_BASE(dev_priv) + 0xb840)
+#define MIPI_VFP_COUNT(port)		_MMIO_MIPI(port, _MIPIA_VFP_COUNT, _MIPIC_VFP_COUNT)
+
+#define _MIPIA_HIGH_LOW_SWITCH_COUNT	(_MIPI_MMIO_BASE(dev_priv) + 0xb044)
+#define _MIPIC_HIGH_LOW_SWITCH_COUNT	(_MIPI_MMIO_BASE(dev_priv) + 0xb844)
+#define MIPI_HIGH_LOW_SWITCH_COUNT(port)	_MMIO_MIPI(port,	_MIPIA_HIGH_LOW_SWITCH_COUNT, _MIPIC_HIGH_LOW_SWITCH_COUNT)
+
+#define _MIPIA_DPI_CONTROL		(_MIPI_MMIO_BASE(dev_priv) + 0xb048)
+#define _MIPIC_DPI_CONTROL		(_MIPI_MMIO_BASE(dev_priv) + 0xb848)
+#define MIPI_DPI_CONTROL(port)		_MMIO_MIPI(port, _MIPIA_DPI_CONTROL, _MIPIC_DPI_CONTROL)
+#define  DPI_LP_MODE					(1 << 6)
+#define  BACKLIGHT_OFF					(1 << 5)
+#define  BACKLIGHT_ON					(1 << 4)
+#define  COLOR_MODE_OFF					(1 << 3)
+#define  COLOR_MODE_ON					(1 << 2)
+#define  TURN_ON					(1 << 1)
+#define  SHUTDOWN					(1 << 0)
+
+#define _MIPIA_DPI_DATA			(_MIPI_MMIO_BASE(dev_priv) + 0xb04c)
+#define _MIPIC_DPI_DATA			(_MIPI_MMIO_BASE(dev_priv) + 0xb84c)
+#define MIPI_DPI_DATA(port)		_MMIO_MIPI(port, _MIPIA_DPI_DATA, _MIPIC_DPI_DATA)
+#define  COMMAND_BYTE_SHIFT				0
+#define  COMMAND_BYTE_MASK				(0x3f << 0)
+
+#define _MIPIA_INIT_COUNT		(_MIPI_MMIO_BASE(dev_priv) + 0xb050)
+#define _MIPIC_INIT_COUNT		(_MIPI_MMIO_BASE(dev_priv) + 0xb850)
+#define MIPI_INIT_COUNT(port)		_MMIO_MIPI(port, _MIPIA_INIT_COUNT, _MIPIC_INIT_COUNT)
+#define  MASTER_INIT_TIMER_SHIFT			0
+#define  MASTER_INIT_TIMER_MASK				(0xffff << 0)
+
+#define _MIPIA_MAX_RETURN_PKT_SIZE	(_MIPI_MMIO_BASE(dev_priv) + 0xb054)
+#define _MIPIC_MAX_RETURN_PKT_SIZE	(_MIPI_MMIO_BASE(dev_priv) + 0xb854)
+#define MIPI_MAX_RETURN_PKT_SIZE(port)	_MMIO_MIPI(port, \
+			_MIPIA_MAX_RETURN_PKT_SIZE, _MIPIC_MAX_RETURN_PKT_SIZE)
+#define  MAX_RETURN_PKT_SIZE_SHIFT			0
+#define  MAX_RETURN_PKT_SIZE_MASK			(0x3ff << 0)
+
+#define _MIPIA_VIDEO_MODE_FORMAT	(_MIPI_MMIO_BASE(dev_priv) + 0xb058)
+#define _MIPIC_VIDEO_MODE_FORMAT	(_MIPI_MMIO_BASE(dev_priv) + 0xb858)
+#define MIPI_VIDEO_MODE_FORMAT(port)	_MMIO_MIPI(port, _MIPIA_VIDEO_MODE_FORMAT, _MIPIC_VIDEO_MODE_FORMAT)
+#define  RANDOM_DPI_DISPLAY_RESOLUTION			(1 << 4)
+#define  DISABLE_VIDEO_BTA				(1 << 3)
+#define  IP_TG_CONFIG					(1 << 2)
+#define  VIDEO_MODE_NON_BURST_WITH_SYNC_PULSE		(1 << 0)
+#define  VIDEO_MODE_NON_BURST_WITH_SYNC_EVENTS		(2 << 0)
+#define  VIDEO_MODE_BURST				(3 << 0)
+
+#define _MIPIA_EOT_DISABLE		(_MIPI_MMIO_BASE(dev_priv) + 0xb05c)
+#define _MIPIC_EOT_DISABLE		(_MIPI_MMIO_BASE(dev_priv) + 0xb85c)
+#define MIPI_EOT_DISABLE(port)		_MMIO_MIPI(port, _MIPIA_EOT_DISABLE, _MIPIC_EOT_DISABLE)
+#define  BXT_DEFEATURE_DPI_FIFO_CTR			(1 << 9)
+#define  BXT_DPHY_DEFEATURE_EN				(1 << 8)
+#define  LP_RX_TIMEOUT_ERROR_RECOVERY_DISABLE		(1 << 7)
+#define  HS_RX_TIMEOUT_ERROR_RECOVERY_DISABLE		(1 << 6)
+#define  LOW_CONTENTION_RECOVERY_DISABLE		(1 << 5)
+#define  HIGH_CONTENTION_RECOVERY_DISABLE		(1 << 4)
+#define  TXDSI_TYPE_NOT_RECOGNISED_ERROR_RECOVERY_DISABLE (1 << 3)
+#define  TXECC_MULTIBIT_ERROR_RECOVERY_DISABLE		(1 << 2)
+#define  CLOCKSTOP					(1 << 1)
+#define  EOT_DISABLE					(1 << 0)
+
+#define _MIPIA_LP_BYTECLK		(_MIPI_MMIO_BASE(dev_priv) + 0xb060)
+#define _MIPIC_LP_BYTECLK		(_MIPI_MMIO_BASE(dev_priv) + 0xb860)
+#define MIPI_LP_BYTECLK(port)		_MMIO_MIPI(port, _MIPIA_LP_BYTECLK, _MIPIC_LP_BYTECLK)
+#define  LP_BYTECLK_SHIFT				0
+#define  LP_BYTECLK_MASK				(0xffff << 0)
+
+#define _MIPIA_TLPX_TIME_COUNT		(_MIPI_MMIO_BASE(dev_priv) + 0xb0a4)
+#define _MIPIC_TLPX_TIME_COUNT		(_MIPI_MMIO_BASE(dev_priv) + 0xb8a4)
+#define MIPI_TLPX_TIME_COUNT(port)	 _MMIO_MIPI(port, _MIPIA_TLPX_TIME_COUNT, _MIPIC_TLPX_TIME_COUNT)
+
+#define _MIPIA_CLK_LANE_TIMING		(_MIPI_MMIO_BASE(dev_priv) + 0xb098)
+#define _MIPIC_CLK_LANE_TIMING		(_MIPI_MMIO_BASE(dev_priv) + 0xb898)
+#define MIPI_CLK_LANE_TIMING(port)	 _MMIO_MIPI(port, _MIPIA_CLK_LANE_TIMING, _MIPIC_CLK_LANE_TIMING)
+
+/* bits 31:0 */
+#define _MIPIA_LP_GEN_DATA		(_MIPI_MMIO_BASE(dev_priv) + 0xb064)
+#define _MIPIC_LP_GEN_DATA		(_MIPI_MMIO_BASE(dev_priv) + 0xb864)
+#define MIPI_LP_GEN_DATA(port)		_MMIO_MIPI(port, _MIPIA_LP_GEN_DATA, _MIPIC_LP_GEN_DATA)
+
+/* bits 31:0 */
+#define _MIPIA_HS_GEN_DATA		(_MIPI_MMIO_BASE(dev_priv) + 0xb068)
+#define _MIPIC_HS_GEN_DATA		(_MIPI_MMIO_BASE(dev_priv) + 0xb868)
+#define MIPI_HS_GEN_DATA(port)		_MMIO_MIPI(port, _MIPIA_HS_GEN_DATA, _MIPIC_HS_GEN_DATA)
+
+#define _MIPIA_LP_GEN_CTRL		(_MIPI_MMIO_BASE(dev_priv) + 0xb06c)
+#define _MIPIC_LP_GEN_CTRL		(_MIPI_MMIO_BASE(dev_priv) + 0xb86c)
+#define MIPI_LP_GEN_CTRL(port)		_MMIO_MIPI(port, _MIPIA_LP_GEN_CTRL, _MIPIC_LP_GEN_CTRL)
+#define _MIPIA_HS_GEN_CTRL		(_MIPI_MMIO_BASE(dev_priv) + 0xb070)
+#define _MIPIC_HS_GEN_CTRL		(_MIPI_MMIO_BASE(dev_priv) + 0xb870)
+#define MIPI_HS_GEN_CTRL(port)		_MMIO_MIPI(port, _MIPIA_HS_GEN_CTRL, _MIPIC_HS_GEN_CTRL)
+#define  LONG_PACKET_WORD_COUNT_SHIFT			8
+#define  LONG_PACKET_WORD_COUNT_MASK			(0xffff << 8)
+#define  SHORT_PACKET_PARAM_SHIFT			8
+#define  SHORT_PACKET_PARAM_MASK			(0xffff << 8)
+#define  VIRTUAL_CHANNEL_SHIFT				6
+#define  VIRTUAL_CHANNEL_MASK				(3 << 6)
+#define  DATA_TYPE_SHIFT				0
+#define  DATA_TYPE_MASK					(0x3f << 0)
+/* data type values, see include/video/mipi_display.h */
+
+#define _MIPIA_GEN_FIFO_STAT		(_MIPI_MMIO_BASE(dev_priv) + 0xb074)
+#define _MIPIC_GEN_FIFO_STAT		(_MIPI_MMIO_BASE(dev_priv) + 0xb874)
+#define MIPI_GEN_FIFO_STAT(port)	_MMIO_MIPI(port, _MIPIA_GEN_FIFO_STAT, _MIPIC_GEN_FIFO_STAT)
+#define  DPI_FIFO_EMPTY					(1 << 28)
+#define  DBI_FIFO_EMPTY					(1 << 27)
+#define  LP_CTRL_FIFO_EMPTY				(1 << 26)
+#define  LP_CTRL_FIFO_HALF_EMPTY			(1 << 25)
+#define  LP_CTRL_FIFO_FULL				(1 << 24)
+#define  HS_CTRL_FIFO_EMPTY				(1 << 18)
+#define  HS_CTRL_FIFO_HALF_EMPTY			(1 << 17)
+#define  HS_CTRL_FIFO_FULL				(1 << 16)
+#define  LP_DATA_FIFO_EMPTY				(1 << 10)
+#define  LP_DATA_FIFO_HALF_EMPTY			(1 << 9)
+#define  LP_DATA_FIFO_FULL				(1 << 8)
+#define  HS_DATA_FIFO_EMPTY				(1 << 2)
+#define  HS_DATA_FIFO_HALF_EMPTY			(1 << 1)
+#define  HS_DATA_FIFO_FULL				(1 << 0)
+
+#define _MIPIA_HS_LS_DBI_ENABLE		(_MIPI_MMIO_BASE(dev_priv) + 0xb078)
+#define _MIPIC_HS_LS_DBI_ENABLE		(_MIPI_MMIO_BASE(dev_priv) + 0xb878)
+#define MIPI_HS_LP_DBI_ENABLE(port)	_MMIO_MIPI(port, _MIPIA_HS_LS_DBI_ENABLE, _MIPIC_HS_LS_DBI_ENABLE)
+#define  DBI_HS_LP_MODE_MASK				(1 << 0)
+#define  DBI_LP_MODE					(1 << 0)
+#define  DBI_HS_MODE					(0 << 0)
+
+#define _MIPIA_DPHY_PARAM		(_MIPI_MMIO_BASE(dev_priv) + 0xb080)
+#define _MIPIC_DPHY_PARAM		(_MIPI_MMIO_BASE(dev_priv) + 0xb880)
+#define MIPI_DPHY_PARAM(port)		_MMIO_MIPI(port, _MIPIA_DPHY_PARAM, _MIPIC_DPHY_PARAM)
+#define  EXIT_ZERO_COUNT_SHIFT				24
+#define  EXIT_ZERO_COUNT_MASK				(0x3f << 24)
+#define  TRAIL_COUNT_SHIFT				16
+#define  TRAIL_COUNT_MASK				(0x1f << 16)
+#define  CLK_ZERO_COUNT_SHIFT				8
+#define  CLK_ZERO_COUNT_MASK				(0xff << 8)
+#define  PREPARE_COUNT_SHIFT				0
+#define  PREPARE_COUNT_MASK				(0x3f << 0)
+
+#define _MIPIA_DBI_BW_CTRL		(_MIPI_MMIO_BASE(dev_priv) + 0xb084)
+#define _MIPIC_DBI_BW_CTRL		(_MIPI_MMIO_BASE(dev_priv) + 0xb884)
+#define MIPI_DBI_BW_CTRL(port)		_MMIO_MIPI(port, _MIPIA_DBI_BW_CTRL, _MIPIC_DBI_BW_CTRL)
+
+#define _MIPIA_CLK_LANE_SWITCH_TIME_CNT		(_MIPI_MMIO_BASE(dev_priv) + 0xb088)
+#define _MIPIC_CLK_LANE_SWITCH_TIME_CNT		(_MIPI_MMIO_BASE(dev_priv) + 0xb888)
+#define MIPI_CLK_LANE_SWITCH_TIME_CNT(port)	_MMIO_MIPI(port, _MIPIA_CLK_LANE_SWITCH_TIME_CNT, _MIPIC_CLK_LANE_SWITCH_TIME_CNT)
+#define  LP_HS_SSW_CNT_SHIFT				16
+#define  LP_HS_SSW_CNT_MASK				(0xffff << 16)
+#define  HS_LP_PWR_SW_CNT_SHIFT				0
+#define  HS_LP_PWR_SW_CNT_MASK				(0xffff << 0)
+
+#define _MIPIA_STOP_STATE_STALL		(_MIPI_MMIO_BASE(dev_priv) + 0xb08c)
+#define _MIPIC_STOP_STATE_STALL		(_MIPI_MMIO_BASE(dev_priv) + 0xb88c)
+#define MIPI_STOP_STATE_STALL(port)	_MMIO_MIPI(port, _MIPIA_STOP_STATE_STALL, _MIPIC_STOP_STATE_STALL)
+#define  STOP_STATE_STALL_COUNTER_SHIFT			0
+#define  STOP_STATE_STALL_COUNTER_MASK			(0xff << 0)
+
+#define _MIPIA_INTR_STAT_REG_1		(_MIPI_MMIO_BASE(dev_priv) + 0xb090)
+#define _MIPIC_INTR_STAT_REG_1		(_MIPI_MMIO_BASE(dev_priv) + 0xb890)
+#define MIPI_INTR_STAT_REG_1(port)	_MMIO_MIPI(port, _MIPIA_INTR_STAT_REG_1, _MIPIC_INTR_STAT_REG_1)
+#define _MIPIA_INTR_EN_REG_1		(_MIPI_MMIO_BASE(dev_priv) + 0xb094)
+#define _MIPIC_INTR_EN_REG_1		(_MIPI_MMIO_BASE(dev_priv) + 0xb894)
+#define MIPI_INTR_EN_REG_1(port)	_MMIO_MIPI(port, _MIPIA_INTR_EN_REG_1, _MIPIC_INTR_EN_REG_1)
+#define  RX_CONTENTION_DETECTED				(1 << 0)
+
+/* XXX: only pipe A ?!? */
+#define MIPIA_DBI_TYPEC_CTRL		(_MIPI_MMIO_BASE(dev_priv) + 0xb100)
+#define  DBI_TYPEC_ENABLE				(1 << 31)
+#define  DBI_TYPEC_WIP					(1 << 30)
+#define  DBI_TYPEC_OPTION_SHIFT				28
+#define  DBI_TYPEC_OPTION_MASK				(3 << 28)
+#define  DBI_TYPEC_FREQ_SHIFT				24
+#define  DBI_TYPEC_FREQ_MASK				(0xf << 24)
+#define  DBI_TYPEC_OVERRIDE				(1 << 8)
+#define  DBI_TYPEC_OVERRIDE_COUNTER_SHIFT		0
+#define  DBI_TYPEC_OVERRIDE_COUNTER_MASK		(0xff << 0)
+
+/* MIPI adapter registers */
+
+#define _MIPIA_CTRL			(_MIPI_MMIO_BASE(dev_priv) + 0xb104)
+#define _MIPIC_CTRL			(_MIPI_MMIO_BASE(dev_priv) + 0xb904)
+#define MIPI_CTRL(port)			_MMIO_MIPI(port, _MIPIA_CTRL, _MIPIC_CTRL)
+#define  ESCAPE_CLOCK_DIVIDER_SHIFT			5 /* A only */
+#define  ESCAPE_CLOCK_DIVIDER_MASK			(3 << 5)
+#define  ESCAPE_CLOCK_DIVIDER_1				(0 << 5)
+#define  ESCAPE_CLOCK_DIVIDER_2				(1 << 5)
+#define  ESCAPE_CLOCK_DIVIDER_4				(2 << 5)
+#define  READ_REQUEST_PRIORITY_SHIFT			3
+#define  READ_REQUEST_PRIORITY_MASK			(3 << 3)
+#define  READ_REQUEST_PRIORITY_LOW			(0 << 3)
+#define  READ_REQUEST_PRIORITY_HIGH			(3 << 3)
+#define  RGB_FLIP_TO_BGR				(1 << 2)
+
+#define  BXT_PIPE_SELECT_SHIFT				7
+#define  BXT_PIPE_SELECT_MASK				(7 << 7)
+#define  BXT_PIPE_SELECT(pipe)				((pipe) << 7)
+#define  GLK_PHY_STATUS_PORT_READY			(1 << 31) /* RO */
+#define  GLK_ULPS_NOT_ACTIVE				(1 << 30) /* RO */
+#define  GLK_MIPIIO_RESET_RELEASED			(1 << 28)
+#define  GLK_CLOCK_LANE_STOP_STATE			(1 << 27) /* RO */
+#define  GLK_DATA_LANE_STOP_STATE			(1 << 26) /* RO */
+#define  GLK_LP_WAKE					(1 << 22)
+#define  GLK_LP11_LOW_PWR_MODE				(1 << 21)
+#define  GLK_LP00_LOW_PWR_MODE				(1 << 20)
+#define  GLK_FIREWALL_ENABLE				(1 << 16)
+#define  BXT_PIXEL_OVERLAP_CNT_MASK			(0xf << 10)
+#define  BXT_PIXEL_OVERLAP_CNT_SHIFT			10
+#define  BXT_DSC_ENABLE					(1 << 3)
+#define  BXT_RGB_FLIP					(1 << 2)
+#define  GLK_MIPIIO_PORT_POWERED			(1 << 1) /* RO */
+#define  GLK_MIPIIO_ENABLE				(1 << 0)
+
+#define _MIPIA_DATA_ADDRESS		(_MIPI_MMIO_BASE(dev_priv) + 0xb108)
+#define _MIPIC_DATA_ADDRESS		(_MIPI_MMIO_BASE(dev_priv) + 0xb908)
+#define MIPI_DATA_ADDRESS(port)		_MMIO_MIPI(port, _MIPIA_DATA_ADDRESS, _MIPIC_DATA_ADDRESS)
+#define  DATA_MEM_ADDRESS_SHIFT				5
+#define  DATA_MEM_ADDRESS_MASK				(0x7ffffff << 5)
+#define  DATA_VALID					(1 << 0)
+
+#define _MIPIA_DATA_LENGTH		(_MIPI_MMIO_BASE(dev_priv) + 0xb10c)
+#define _MIPIC_DATA_LENGTH		(_MIPI_MMIO_BASE(dev_priv) + 0xb90c)
+#define MIPI_DATA_LENGTH(port)		_MMIO_MIPI(port, _MIPIA_DATA_LENGTH, _MIPIC_DATA_LENGTH)
+#define  DATA_LENGTH_SHIFT				0
+#define  DATA_LENGTH_MASK				(0xfffff << 0)
+
+#define _MIPIA_COMMAND_ADDRESS		(_MIPI_MMIO_BASE(dev_priv) + 0xb110)
+#define _MIPIC_COMMAND_ADDRESS		(_MIPI_MMIO_BASE(dev_priv) + 0xb910)
+#define MIPI_COMMAND_ADDRESS(port)	_MMIO_MIPI(port, _MIPIA_COMMAND_ADDRESS, _MIPIC_COMMAND_ADDRESS)
+#define  COMMAND_MEM_ADDRESS_SHIFT			5
+#define  COMMAND_MEM_ADDRESS_MASK			(0x7ffffff << 5)
+#define  AUTO_PWG_ENABLE				(1 << 2)
+#define  MEMORY_WRITE_DATA_FROM_PIPE_RENDERING		(1 << 1)
+#define  COMMAND_VALID					(1 << 0)
+
+#define _MIPIA_COMMAND_LENGTH		(_MIPI_MMIO_BASE(dev_priv) + 0xb114)
+#define _MIPIC_COMMAND_LENGTH		(_MIPI_MMIO_BASE(dev_priv) + 0xb914)
+#define MIPI_COMMAND_LENGTH(port)	_MMIO_MIPI(port, _MIPIA_COMMAND_LENGTH, _MIPIC_COMMAND_LENGTH)
+#define  COMMAND_LENGTH_SHIFT(n)			(8 * (n)) /* n: 0...3 */
+#define  COMMAND_LENGTH_MASK(n)				(0xff << (8 * (n)))
+
+#define _MIPIA_READ_DATA_RETURN0	(_MIPI_MMIO_BASE(dev_priv) + 0xb118)
+#define _MIPIC_READ_DATA_RETURN0	(_MIPI_MMIO_BASE(dev_priv) + 0xb918)
+#define MIPI_READ_DATA_RETURN(port, n) _MMIO(_MIPI(port, _MIPIA_READ_DATA_RETURN0, _MIPIC_READ_DATA_RETURN0) + 4 * (n)) /* n: 0...7 */
+
+#define _MIPIA_READ_DATA_VALID		(_MIPI_MMIO_BASE(dev_priv) + 0xb138)
+#define _MIPIC_READ_DATA_VALID		(_MIPI_MMIO_BASE(dev_priv) + 0xb938)
+#define MIPI_READ_DATA_VALID(port)	_MMIO_MIPI(port, _MIPIA_READ_DATA_VALID, _MIPIC_READ_DATA_VALID)
+#define  READ_DATA_VALID(n)				(1 << (n))
+
+#endif /* __VLV_DSI_REGS_H__ */