Adding upstream version 4.19.249.upstream/4.19.249

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

1 files changed, 894 insertions, 0 deletions

diff --git a/drivers/gpu/drm/sti/sti_tvout.c b/drivers/gpu/drm/sti/sti_tvout.c
new file mode 100644
index 000000000..ea4a3b87f
--- /dev/null
+++ b/drivers/gpu/drm/sti/sti_tvout.c
@@ -0,0 +1,894 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) STMicroelectronics SA 2014
+ * Authors: Benjamin Gaignard <benjamin.gaignard@st.com>
+ *          Vincent Abriou <vincent.abriou@st.com>
+ *          for STMicroelectronics.
+ */
+
+#include <linux/clk.h>
+#include <linux/component.h>
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/reset.h>
+#include <linux/seq_file.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc_helper.h>
+
+#include "sti_crtc.h"
+#include "sti_drv.h"
+#include "sti_vtg.h"
+
+/* glue registers */
+#define TVO_CSC_MAIN_M0                  0x000
+#define TVO_CSC_MAIN_M1                  0x004
+#define TVO_CSC_MAIN_M2                  0x008
+#define TVO_CSC_MAIN_M3                  0x00c
+#define TVO_CSC_MAIN_M4                  0x010
+#define TVO_CSC_MAIN_M5                  0x014
+#define TVO_CSC_MAIN_M6                  0x018
+#define TVO_CSC_MAIN_M7                  0x01c
+#define TVO_MAIN_IN_VID_FORMAT           0x030
+#define TVO_CSC_AUX_M0                   0x100
+#define TVO_CSC_AUX_M1                   0x104
+#define TVO_CSC_AUX_M2                   0x108
+#define TVO_CSC_AUX_M3                   0x10c
+#define TVO_CSC_AUX_M4                   0x110
+#define TVO_CSC_AUX_M5                   0x114
+#define TVO_CSC_AUX_M6                   0x118
+#define TVO_CSC_AUX_M7                   0x11c
+#define TVO_AUX_IN_VID_FORMAT            0x130
+#define TVO_VIP_HDF                      0x400
+#define TVO_HD_SYNC_SEL                  0x418
+#define TVO_HD_DAC_CFG_OFF               0x420
+#define TVO_VIP_HDMI                     0x500
+#define TVO_HDMI_FORCE_COLOR_0           0x504
+#define TVO_HDMI_FORCE_COLOR_1           0x508
+#define TVO_HDMI_CLIP_VALUE_B_CB         0x50c
+#define TVO_HDMI_CLIP_VALUE_Y_G          0x510
+#define TVO_HDMI_CLIP_VALUE_R_CR         0x514
+#define TVO_HDMI_SYNC_SEL                0x518
+#define TVO_HDMI_DFV_OBS                 0x540
+#define TVO_VIP_DVO                      0x600
+#define TVO_DVO_SYNC_SEL                 0x618
+#define TVO_DVO_CONFIG                   0x620
+
+#define TVO_IN_FMT_SIGNED                BIT(0)
+#define TVO_SYNC_EXT                     BIT(4)
+
+#define TVO_VIP_REORDER_R_SHIFT          24
+#define TVO_VIP_REORDER_G_SHIFT          20
+#define TVO_VIP_REORDER_B_SHIFT          16
+#define TVO_VIP_REORDER_MASK             0x3
+#define TVO_VIP_REORDER_Y_G_SEL          0
+#define TVO_VIP_REORDER_CB_B_SEL         1
+#define TVO_VIP_REORDER_CR_R_SEL         2
+
+#define TVO_VIP_CLIP_SHIFT               8
+#define TVO_VIP_CLIP_MASK                0x7
+#define TVO_VIP_CLIP_DISABLED            0
+#define TVO_VIP_CLIP_EAV_SAV             1
+#define TVO_VIP_CLIP_LIMITED_RANGE_RGB_Y 2
+#define TVO_VIP_CLIP_LIMITED_RANGE_CB_CR 3
+#define TVO_VIP_CLIP_PROG_RANGE          4
+
+#define TVO_VIP_RND_SHIFT                4
+#define TVO_VIP_RND_MASK                 0x3
+#define TVO_VIP_RND_8BIT_ROUNDED         0
+#define TVO_VIP_RND_10BIT_ROUNDED        1
+#define TVO_VIP_RND_12BIT_ROUNDED        2
+
+#define TVO_VIP_SEL_INPUT_MASK           0xf
+#define TVO_VIP_SEL_INPUT_MAIN           0x0
+#define TVO_VIP_SEL_INPUT_AUX            0x8
+#define TVO_VIP_SEL_INPUT_FORCE_COLOR    0xf
+#define TVO_VIP_SEL_INPUT_BYPASS_MASK    0x1
+#define TVO_VIP_SEL_INPUT_BYPASSED       1
+
+#define TVO_SYNC_MAIN_VTG_SET_REF        0x00
+#define TVO_SYNC_AUX_VTG_SET_REF         0x10
+
+#define TVO_SYNC_HD_DCS_SHIFT            8
+
+#define TVO_SYNC_DVO_PAD_HSYNC_SHIFT     8
+#define TVO_SYNC_DVO_PAD_VSYNC_SHIFT     16
+
+#define ENCODER_CRTC_MASK                (BIT(0) | BIT(1))
+
+#define TVO_MIN_HD_HEIGHT                720
+
+/* enum listing the supported output data format */
+enum sti_tvout_video_out_type {
+	STI_TVOUT_VIDEO_OUT_RGB,
+	STI_TVOUT_VIDEO_OUT_YUV,
+};
+
+struct sti_tvout {
+	struct device *dev;
+	struct drm_device *drm_dev;
+	void __iomem *regs;
+	struct reset_control *reset;
+	struct drm_encoder *hdmi;
+	struct drm_encoder *hda;
+	struct drm_encoder *dvo;
+	bool debugfs_registered;
+};
+
+struct sti_tvout_encoder {
+	struct drm_encoder encoder;
+	struct sti_tvout *tvout;
+};
+
+#define to_sti_tvout_encoder(x) \
+	container_of(x, struct sti_tvout_encoder, encoder)
+
+#define to_sti_tvout(x) to_sti_tvout_encoder(x)->tvout
+
+/* preformatter conversion matrix */
+static const u32 rgb_to_ycbcr_601[8] = {
+	0xF927082E, 0x04C9FEAB, 0x01D30964, 0xFA95FD3D,
+	0x0000082E, 0x00002000, 0x00002000, 0x00000000
+};
+
+/* 709 RGB to YCbCr */
+static const u32 rgb_to_ycbcr_709[8] = {
+	0xF891082F, 0x0367FF40, 0x01280B71, 0xF9B1FE20,
+	0x0000082F, 0x00002000, 0x00002000, 0x00000000
+};
+
+static u32 tvout_read(struct sti_tvout *tvout, int offset)
+{
+	return readl(tvout->regs + offset);
+}
+
+static void tvout_write(struct sti_tvout *tvout, u32 val, int offset)
+{
+	writel(val, tvout->regs + offset);
+}
+
+/**
+ * Set the clipping mode of a VIP
+ *
+ * @tvout: tvout structure
+ * @reg: register to set
+ * @cr_r:
+ * @y_g:
+ * @cb_b:
+ */
+static void tvout_vip_set_color_order(struct sti_tvout *tvout, int reg,
+				      u32 cr_r, u32 y_g, u32 cb_b)
+{
+	u32 val = tvout_read(tvout, reg);
+
+	val &= ~(TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_R_SHIFT);
+	val &= ~(TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_G_SHIFT);
+	val &= ~(TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_B_SHIFT);
+	val |= cr_r << TVO_VIP_REORDER_R_SHIFT;
+	val |= y_g << TVO_VIP_REORDER_G_SHIFT;
+	val |= cb_b << TVO_VIP_REORDER_B_SHIFT;
+
+	tvout_write(tvout, val, reg);
+}
+
+/**
+ * Set the clipping mode of a VIP
+ *
+ * @tvout: tvout structure
+ * @reg: register to set
+ * @range: clipping range
+ */
+static void tvout_vip_set_clip_mode(struct sti_tvout *tvout, int reg, u32 range)
+{
+	u32 val = tvout_read(tvout, reg);
+
+	val &= ~(TVO_VIP_CLIP_MASK << TVO_VIP_CLIP_SHIFT);
+	val |= range << TVO_VIP_CLIP_SHIFT;
+	tvout_write(tvout, val, reg);
+}
+
+/**
+ * Set the rounded value of a VIP
+ *
+ * @tvout: tvout structure
+ * @reg: register to set
+ * @rnd: rounded val per component
+ */
+static void tvout_vip_set_rnd(struct sti_tvout *tvout, int reg, u32 rnd)
+{
+	u32 val = tvout_read(tvout, reg);
+
+	val &= ~(TVO_VIP_RND_MASK << TVO_VIP_RND_SHIFT);
+	val |= rnd << TVO_VIP_RND_SHIFT;
+	tvout_write(tvout, val, reg);
+}
+
+/**
+ * Select the VIP input
+ *
+ * @tvout: tvout structure
+ * @reg: register to set
+ * @main_path: main or auxiliary path
+ * @sel_input: selected_input (main/aux + conv)
+ */
+static void tvout_vip_set_sel_input(struct sti_tvout *tvout,
+				    int reg,
+				    bool main_path,
+				    enum sti_tvout_video_out_type video_out)
+{
+	u32 sel_input;
+	u32 val = tvout_read(tvout, reg);
+
+	if (main_path)
+		sel_input = TVO_VIP_SEL_INPUT_MAIN;
+	else
+		sel_input = TVO_VIP_SEL_INPUT_AUX;
+
+	switch (video_out) {
+	case STI_TVOUT_VIDEO_OUT_RGB:
+		sel_input |= TVO_VIP_SEL_INPUT_BYPASSED;
+		break;
+	case STI_TVOUT_VIDEO_OUT_YUV:
+		sel_input &= ~TVO_VIP_SEL_INPUT_BYPASSED;
+		break;
+	}
+
+	/* on stih407 chip the sel_input bypass mode logic is inverted */
+	sel_input = sel_input ^ TVO_VIP_SEL_INPUT_BYPASS_MASK;
+
+	val &= ~TVO_VIP_SEL_INPUT_MASK;
+	val |= sel_input;
+	tvout_write(tvout, val, reg);
+}
+
+/**
+ * Select the input video signed or unsigned
+ *
+ * @tvout: tvout structure
+ * @reg: register to set
+ * @in_vid_signed: used video input format
+ */
+static void tvout_vip_set_in_vid_fmt(struct sti_tvout *tvout,
+		int reg, u32 in_vid_fmt)
+{
+	u32 val = tvout_read(tvout, reg);
+
+	val &= ~TVO_IN_FMT_SIGNED;
+	val |= in_vid_fmt;
+	tvout_write(tvout, val, reg);
+}
+
+/**
+ * Set preformatter matrix
+ *
+ * @tvout: tvout structure
+ * @mode: display mode structure
+ */
+static void tvout_preformatter_set_matrix(struct sti_tvout *tvout,
+					  struct drm_display_mode *mode)
+{
+	unsigned int i;
+	const u32 *pf_matrix;
+
+	if (mode->vdisplay >= TVO_MIN_HD_HEIGHT)
+		pf_matrix = rgb_to_ycbcr_709;
+	else
+		pf_matrix = rgb_to_ycbcr_601;
+
+	for (i = 0; i < 8; i++) {
+		tvout_write(tvout, *(pf_matrix + i),
+			    TVO_CSC_MAIN_M0 + (i * 4));
+		tvout_write(tvout, *(pf_matrix + i),
+			    TVO_CSC_AUX_M0 + (i * 4));
+	}
+}
+
+/**
+ * Start VIP block for DVO output
+ *
+ * @tvout: pointer on tvout structure
+ * @main_path: true if main path has to be used in the vip configuration
+ *	  else aux path is used.
+ */
+static void tvout_dvo_start(struct sti_tvout *tvout, bool main_path)
+{
+	u32 tvo_in_vid_format;
+	int val, tmp;
+
+	dev_dbg(tvout->dev, "%s\n", __func__);
+
+	if (main_path) {
+		DRM_DEBUG_DRIVER("main vip for DVO\n");
+		/* Select the input sync for dvo */
+		tmp = TVO_SYNC_MAIN_VTG_SET_REF | VTG_SYNC_ID_DVO;
+		val  = tmp << TVO_SYNC_DVO_PAD_VSYNC_SHIFT;
+		val |= tmp << TVO_SYNC_DVO_PAD_HSYNC_SHIFT;
+		val |= tmp;
+		tvout_write(tvout, val, TVO_DVO_SYNC_SEL);
+		tvo_in_vid_format = TVO_MAIN_IN_VID_FORMAT;
+	} else {
+		DRM_DEBUG_DRIVER("aux vip for DVO\n");
+		/* Select the input sync for dvo */
+		tmp = TVO_SYNC_AUX_VTG_SET_REF | VTG_SYNC_ID_DVO;
+		val  = tmp << TVO_SYNC_DVO_PAD_VSYNC_SHIFT;
+		val |= tmp << TVO_SYNC_DVO_PAD_HSYNC_SHIFT;
+		val |= tmp;
+		tvout_write(tvout, val, TVO_DVO_SYNC_SEL);
+		tvo_in_vid_format = TVO_AUX_IN_VID_FORMAT;
+	}
+
+	/* Set color channel order */
+	tvout_vip_set_color_order(tvout, TVO_VIP_DVO,
+				  TVO_VIP_REORDER_CR_R_SEL,
+				  TVO_VIP_REORDER_Y_G_SEL,
+				  TVO_VIP_REORDER_CB_B_SEL);
+
+	/* Set clipping mode */
+	tvout_vip_set_clip_mode(tvout, TVO_VIP_DVO, TVO_VIP_CLIP_DISABLED);
+
+	/* Set round mode (rounded to 8-bit per component) */
+	tvout_vip_set_rnd(tvout, TVO_VIP_DVO, TVO_VIP_RND_8BIT_ROUNDED);
+
+	/* Set input video format */
+	tvout_vip_set_in_vid_fmt(tvout, tvo_in_vid_format, TVO_IN_FMT_SIGNED);
+
+	/* Input selection */
+	tvout_vip_set_sel_input(tvout, TVO_VIP_DVO, main_path,
+				STI_TVOUT_VIDEO_OUT_RGB);
+}
+
+/**
+ * Start VIP block for HDMI output
+ *
+ * @tvout: pointer on tvout structure
+ * @main_path: true if main path has to be used in the vip configuration
+ *	  else aux path is used.
+ */
+static void tvout_hdmi_start(struct sti_tvout *tvout, bool main_path)
+{
+	u32 tvo_in_vid_format;
+
+	dev_dbg(tvout->dev, "%s\n", __func__);
+
+	if (main_path) {
+		DRM_DEBUG_DRIVER("main vip for hdmi\n");
+		/* select the input sync for hdmi */
+		tvout_write(tvout,
+			    TVO_SYNC_MAIN_VTG_SET_REF | VTG_SYNC_ID_HDMI,
+			    TVO_HDMI_SYNC_SEL);
+		tvo_in_vid_format = TVO_MAIN_IN_VID_FORMAT;
+	} else {
+		DRM_DEBUG_DRIVER("aux vip for hdmi\n");
+		/* select the input sync for hdmi */
+		tvout_write(tvout,
+			    TVO_SYNC_AUX_VTG_SET_REF | VTG_SYNC_ID_HDMI,
+			    TVO_HDMI_SYNC_SEL);
+		tvo_in_vid_format = TVO_AUX_IN_VID_FORMAT;
+	}
+
+	/* set color channel order */
+	tvout_vip_set_color_order(tvout, TVO_VIP_HDMI,
+				  TVO_VIP_REORDER_CR_R_SEL,
+				  TVO_VIP_REORDER_Y_G_SEL,
+				  TVO_VIP_REORDER_CB_B_SEL);
+
+	/* set clipping mode */
+	tvout_vip_set_clip_mode(tvout, TVO_VIP_HDMI, TVO_VIP_CLIP_DISABLED);
+
+	/* set round mode (rounded to 8-bit per component) */
+	tvout_vip_set_rnd(tvout, TVO_VIP_HDMI, TVO_VIP_RND_8BIT_ROUNDED);
+
+	/* set input video format */
+	tvout_vip_set_in_vid_fmt(tvout, tvo_in_vid_format, TVO_IN_FMT_SIGNED);
+
+	/* input selection */
+	tvout_vip_set_sel_input(tvout, TVO_VIP_HDMI, main_path,
+				STI_TVOUT_VIDEO_OUT_RGB);
+}
+
+/**
+ * Start HDF VIP and HD DAC
+ *
+ * @tvout: pointer on tvout structure
+ * @main_path: true if main path has to be used in the vip configuration
+ *	  else aux path is used.
+ */
+static void tvout_hda_start(struct sti_tvout *tvout, bool main_path)
+{
+	u32 tvo_in_vid_format;
+	int val;
+
+	dev_dbg(tvout->dev, "%s\n", __func__);
+
+	if (main_path) {
+		DRM_DEBUG_DRIVER("main vip for HDF\n");
+		/* Select the input sync for HD analog and HD DCS */
+		val  = TVO_SYNC_MAIN_VTG_SET_REF | VTG_SYNC_ID_HDDCS;
+		val  = val << TVO_SYNC_HD_DCS_SHIFT;
+		val |= TVO_SYNC_MAIN_VTG_SET_REF | VTG_SYNC_ID_HDF;
+		tvout_write(tvout, val, TVO_HD_SYNC_SEL);
+		tvo_in_vid_format = TVO_MAIN_IN_VID_FORMAT;
+	} else {
+		DRM_DEBUG_DRIVER("aux vip for HDF\n");
+		/* Select the input sync for HD analog and HD DCS */
+		val  = TVO_SYNC_AUX_VTG_SET_REF | VTG_SYNC_ID_HDDCS;
+		val  = val << TVO_SYNC_HD_DCS_SHIFT;
+		val |= TVO_SYNC_AUX_VTG_SET_REF | VTG_SYNC_ID_HDF;
+		tvout_write(tvout, val, TVO_HD_SYNC_SEL);
+		tvo_in_vid_format = TVO_AUX_IN_VID_FORMAT;
+	}
+
+	/* set color channel order */
+	tvout_vip_set_color_order(tvout, TVO_VIP_HDF,
+				  TVO_VIP_REORDER_CR_R_SEL,
+				  TVO_VIP_REORDER_Y_G_SEL,
+				  TVO_VIP_REORDER_CB_B_SEL);
+
+	/* set clipping mode */
+	tvout_vip_set_clip_mode(tvout, TVO_VIP_HDF, TVO_VIP_CLIP_DISABLED);
+
+	/* set round mode (rounded to 10-bit per component) */
+	tvout_vip_set_rnd(tvout, TVO_VIP_HDF, TVO_VIP_RND_10BIT_ROUNDED);
+
+	/* Set input video format */
+	tvout_vip_set_in_vid_fmt(tvout, tvo_in_vid_format, TVO_IN_FMT_SIGNED);
+
+	/* Input selection */
+	tvout_vip_set_sel_input(tvout, TVO_VIP_HDF, main_path,
+				STI_TVOUT_VIDEO_OUT_YUV);
+
+	/* power up HD DAC */
+	tvout_write(tvout, 0, TVO_HD_DAC_CFG_OFF);
+}
+
+#define DBGFS_DUMP(reg) seq_printf(s, "\n  %-25s 0x%08X", #reg, \
+				   readl(tvout->regs + reg))
+
+static void tvout_dbg_vip(struct seq_file *s, int val)
+{
+	int r, g, b, tmp, mask;
+	char *const reorder[] = {"Y_G", "Cb_B", "Cr_R"};
+	char *const clipping[] = {"No", "EAV/SAV", "Limited range RGB/Y",
+				  "Limited range Cb/Cr", "decided by register"};
+	char *const round[] = {"8-bit", "10-bit", "12-bit"};
+	char *const input_sel[] = {"Main (color matrix enabled)",
+				   "Main (color matrix by-passed)",
+				   "", "", "", "", "", "",
+				   "Aux (color matrix enabled)",
+				   "Aux (color matrix by-passed)",
+				   "", "", "", "", "", "Force value"};
+
+	seq_putc(s, '\t');
+	mask = TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_R_SHIFT;
+	r = (val & mask) >> TVO_VIP_REORDER_R_SHIFT;
+	mask = TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_G_SHIFT;
+	g = (val & mask) >> TVO_VIP_REORDER_G_SHIFT;
+	mask = TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_B_SHIFT;
+	b = (val & mask) >> TVO_VIP_REORDER_B_SHIFT;
+	seq_printf(s, "%-24s %s->%s %s->%s %s->%s\n", "Reorder:",
+		   reorder[r], reorder[TVO_VIP_REORDER_CR_R_SEL],
+		   reorder[g], reorder[TVO_VIP_REORDER_Y_G_SEL],
+		   reorder[b], reorder[TVO_VIP_REORDER_CB_B_SEL]);
+	seq_puts(s, "\t\t\t\t\t");
+	mask = TVO_VIP_CLIP_MASK << TVO_VIP_CLIP_SHIFT;
+	tmp = (val & mask) >> TVO_VIP_CLIP_SHIFT;
+	seq_printf(s, "%-24s %s\n", "Clipping:", clipping[tmp]);
+	seq_puts(s, "\t\t\t\t\t");
+	mask = TVO_VIP_RND_MASK << TVO_VIP_RND_SHIFT;
+	tmp = (val & mask) >> TVO_VIP_RND_SHIFT;
+	seq_printf(s, "%-24s input data rounded to %s per component\n",
+		   "Round:", round[tmp]);
+	seq_puts(s, "\t\t\t\t\t");
+	tmp = (val & TVO_VIP_SEL_INPUT_MASK);
+	seq_printf(s, "%-24s %s", "Input selection:", input_sel[tmp]);
+}
+
+static void tvout_dbg_hd_dac_cfg(struct seq_file *s, int val)
+{
+	seq_printf(s, "\t%-24s %s", "HD DAC:",
+		   val & 1 ? "disabled" : "enabled");
+}
+
+static int tvout_dbg_show(struct seq_file *s, void *data)
+{
+	struct drm_info_node *node = s->private;
+	struct sti_tvout *tvout = (struct sti_tvout *)node->info_ent->data;
+	struct drm_crtc *crtc;
+
+	seq_printf(s, "TVOUT: (vaddr = 0x%p)", tvout->regs);
+
+	seq_puts(s, "\n\n  HDMI encoder: ");
+	crtc = tvout->hdmi->crtc;
+	if (crtc) {
+		seq_printf(s, "connected to %s path",
+			   sti_crtc_is_main(crtc) ? "main" : "aux");
+		DBGFS_DUMP(TVO_HDMI_SYNC_SEL);
+		DBGFS_DUMP(TVO_VIP_HDMI);
+		tvout_dbg_vip(s, readl(tvout->regs + TVO_VIP_HDMI));
+	} else {
+		seq_puts(s, "disabled");
+	}
+
+	seq_puts(s, "\n\n  DVO encoder: ");
+	crtc = tvout->dvo->crtc;
+	if (crtc) {
+		seq_printf(s, "connected to %s path",
+			   sti_crtc_is_main(crtc) ? "main" : "aux");
+		DBGFS_DUMP(TVO_DVO_SYNC_SEL);
+		DBGFS_DUMP(TVO_DVO_CONFIG);
+		DBGFS_DUMP(TVO_VIP_DVO);
+		tvout_dbg_vip(s, readl(tvout->regs + TVO_VIP_DVO));
+	} else {
+		seq_puts(s, "disabled");
+	}
+
+	seq_puts(s, "\n\n  HDA encoder: ");
+	crtc = tvout->hda->crtc;
+	if (crtc) {
+		seq_printf(s, "connected to %s path",
+			   sti_crtc_is_main(crtc) ? "main" : "aux");
+		DBGFS_DUMP(TVO_HD_SYNC_SEL);
+		DBGFS_DUMP(TVO_HD_DAC_CFG_OFF);
+		tvout_dbg_hd_dac_cfg(s,
+				     readl(tvout->regs + TVO_HD_DAC_CFG_OFF));
+		DBGFS_DUMP(TVO_VIP_HDF);
+		tvout_dbg_vip(s, readl(tvout->regs + TVO_VIP_HDF));
+	} else {
+		seq_puts(s, "disabled");
+	}
+
+	seq_puts(s, "\n\n  main path configuration");
+	DBGFS_DUMP(TVO_CSC_MAIN_M0);
+	DBGFS_DUMP(TVO_CSC_MAIN_M1);
+	DBGFS_DUMP(TVO_CSC_MAIN_M2);
+	DBGFS_DUMP(TVO_CSC_MAIN_M3);
+	DBGFS_DUMP(TVO_CSC_MAIN_M4);
+	DBGFS_DUMP(TVO_CSC_MAIN_M5);
+	DBGFS_DUMP(TVO_CSC_MAIN_M6);
+	DBGFS_DUMP(TVO_CSC_MAIN_M7);
+	DBGFS_DUMP(TVO_MAIN_IN_VID_FORMAT);
+
+	seq_puts(s, "\n\n  auxiliary path configuration");
+	DBGFS_DUMP(TVO_CSC_AUX_M0);
+	DBGFS_DUMP(TVO_CSC_AUX_M2);
+	DBGFS_DUMP(TVO_CSC_AUX_M3);
+	DBGFS_DUMP(TVO_CSC_AUX_M4);
+	DBGFS_DUMP(TVO_CSC_AUX_M5);
+	DBGFS_DUMP(TVO_CSC_AUX_M6);
+	DBGFS_DUMP(TVO_CSC_AUX_M7);
+	DBGFS_DUMP(TVO_AUX_IN_VID_FORMAT);
+	seq_putc(s, '\n');
+	return 0;
+}
+
+static struct drm_info_list tvout_debugfs_files[] = {
+	{ "tvout", tvout_dbg_show, 0, NULL },
+};
+
+static int tvout_debugfs_init(struct sti_tvout *tvout, struct drm_minor *minor)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(tvout_debugfs_files); i++)
+		tvout_debugfs_files[i].data = tvout;
+
+	return drm_debugfs_create_files(tvout_debugfs_files,
+					ARRAY_SIZE(tvout_debugfs_files),
+					minor->debugfs_root, minor);
+}
+
+static void sti_tvout_encoder_dpms(struct drm_encoder *encoder, int mode)
+{
+}
+
+static void sti_tvout_encoder_mode_set(struct drm_encoder *encoder,
+				       struct drm_display_mode *mode,
+				       struct drm_display_mode *adjusted_mode)
+{
+}
+
+static void sti_tvout_encoder_destroy(struct drm_encoder *encoder)
+{
+	struct sti_tvout_encoder *sti_encoder = to_sti_tvout_encoder(encoder);
+
+	drm_encoder_cleanup(encoder);
+	kfree(sti_encoder);
+}
+
+static int sti_tvout_late_register(struct drm_encoder *encoder)
+{
+	struct sti_tvout *tvout = to_sti_tvout(encoder);
+	int ret;
+
+	if (tvout->debugfs_registered)
+		return 0;
+
+	ret = tvout_debugfs_init(tvout, encoder->dev->primary);
+	if (ret)
+		return ret;
+
+	tvout->debugfs_registered = true;
+	return 0;
+}
+
+static void sti_tvout_early_unregister(struct drm_encoder *encoder)
+{
+	struct sti_tvout *tvout = to_sti_tvout(encoder);
+
+	if (!tvout->debugfs_registered)
+		return;
+
+	tvout->debugfs_registered = false;
+}
+
+static const struct drm_encoder_funcs sti_tvout_encoder_funcs = {
+	.destroy = sti_tvout_encoder_destroy,
+	.late_register = sti_tvout_late_register,
+	.early_unregister = sti_tvout_early_unregister,
+};
+
+static void sti_dvo_encoder_enable(struct drm_encoder *encoder)
+{
+	struct sti_tvout *tvout = to_sti_tvout(encoder);
+
+	tvout_preformatter_set_matrix(tvout, &encoder->crtc->mode);
+
+	tvout_dvo_start(tvout, sti_crtc_is_main(encoder->crtc));
+}
+
+static void sti_dvo_encoder_disable(struct drm_encoder *encoder)
+{
+	struct sti_tvout *tvout = to_sti_tvout(encoder);
+
+	/* Reset VIP register */
+	tvout_write(tvout, 0x0, TVO_VIP_DVO);
+}
+
+static const struct drm_encoder_helper_funcs sti_dvo_encoder_helper_funcs = {
+	.dpms = sti_tvout_encoder_dpms,
+	.mode_set = sti_tvout_encoder_mode_set,
+	.enable = sti_dvo_encoder_enable,
+	.disable = sti_dvo_encoder_disable,
+};
+
+static struct drm_encoder *
+sti_tvout_create_dvo_encoder(struct drm_device *dev,
+			     struct sti_tvout *tvout)
+{
+	struct sti_tvout_encoder *encoder;
+	struct drm_encoder *drm_encoder;
+
+	encoder = devm_kzalloc(tvout->dev, sizeof(*encoder), GFP_KERNEL);
+	if (!encoder)
+		return NULL;
+
+	encoder->tvout = tvout;
+
+	drm_encoder = (struct drm_encoder *)encoder;
+
+	drm_encoder->possible_crtcs = ENCODER_CRTC_MASK;
+	drm_encoder->possible_clones = 1 << 0;
+
+	drm_encoder_init(dev, drm_encoder,
+			 &sti_tvout_encoder_funcs, DRM_MODE_ENCODER_LVDS,
+			 NULL);
+
+	drm_encoder_helper_add(drm_encoder, &sti_dvo_encoder_helper_funcs);
+
+	return drm_encoder;
+}
+
+static void sti_hda_encoder_enable(struct drm_encoder *encoder)
+{
+	struct sti_tvout *tvout = to_sti_tvout(encoder);
+
+	tvout_preformatter_set_matrix(tvout, &encoder->crtc->mode);
+
+	tvout_hda_start(tvout, sti_crtc_is_main(encoder->crtc));
+}
+
+static void sti_hda_encoder_disable(struct drm_encoder *encoder)
+{
+	struct sti_tvout *tvout = to_sti_tvout(encoder);
+
+	/* reset VIP register */
+	tvout_write(tvout, 0x0, TVO_VIP_HDF);
+
+	/* power down HD DAC */
+	tvout_write(tvout, 1, TVO_HD_DAC_CFG_OFF);
+}
+
+static const struct drm_encoder_helper_funcs sti_hda_encoder_helper_funcs = {
+	.dpms = sti_tvout_encoder_dpms,
+	.mode_set = sti_tvout_encoder_mode_set,
+	.commit = sti_hda_encoder_enable,
+	.disable = sti_hda_encoder_disable,
+};
+
+static struct drm_encoder *sti_tvout_create_hda_encoder(struct drm_device *dev,
+		struct sti_tvout *tvout)
+{
+	struct sti_tvout_encoder *encoder;
+	struct drm_encoder *drm_encoder;
+
+	encoder = devm_kzalloc(tvout->dev, sizeof(*encoder), GFP_KERNEL);
+	if (!encoder)
+		return NULL;
+
+	encoder->tvout = tvout;
+
+	drm_encoder = (struct drm_encoder *) encoder;
+
+	drm_encoder->possible_crtcs = ENCODER_CRTC_MASK;
+	drm_encoder->possible_clones = 1 << 0;
+
+	drm_encoder_init(dev, drm_encoder,
+			&sti_tvout_encoder_funcs, DRM_MODE_ENCODER_DAC, NULL);
+
+	drm_encoder_helper_add(drm_encoder, &sti_hda_encoder_helper_funcs);
+
+	return drm_encoder;
+}
+
+static void sti_hdmi_encoder_enable(struct drm_encoder *encoder)
+{
+	struct sti_tvout *tvout = to_sti_tvout(encoder);
+
+	tvout_preformatter_set_matrix(tvout, &encoder->crtc->mode);
+
+	tvout_hdmi_start(tvout, sti_crtc_is_main(encoder->crtc));
+}
+
+static void sti_hdmi_encoder_disable(struct drm_encoder *encoder)
+{
+	struct sti_tvout *tvout = to_sti_tvout(encoder);
+
+	/* reset VIP register */
+	tvout_write(tvout, 0x0, TVO_VIP_HDMI);
+}
+
+static const struct drm_encoder_helper_funcs sti_hdmi_encoder_helper_funcs = {
+	.dpms = sti_tvout_encoder_dpms,
+	.mode_set = sti_tvout_encoder_mode_set,
+	.commit = sti_hdmi_encoder_enable,
+	.disable = sti_hdmi_encoder_disable,
+};
+
+static struct drm_encoder *sti_tvout_create_hdmi_encoder(struct drm_device *dev,
+		struct sti_tvout *tvout)
+{
+	struct sti_tvout_encoder *encoder;
+	struct drm_encoder *drm_encoder;
+
+	encoder = devm_kzalloc(tvout->dev, sizeof(*encoder), GFP_KERNEL);
+	if (!encoder)
+		return NULL;
+
+	encoder->tvout = tvout;
+
+	drm_encoder = (struct drm_encoder *) encoder;
+
+	drm_encoder->possible_crtcs = ENCODER_CRTC_MASK;
+	drm_encoder->possible_clones = 1 << 1;
+
+	drm_encoder_init(dev, drm_encoder,
+			&sti_tvout_encoder_funcs, DRM_MODE_ENCODER_TMDS, NULL);
+
+	drm_encoder_helper_add(drm_encoder, &sti_hdmi_encoder_helper_funcs);
+
+	return drm_encoder;
+}
+
+static void sti_tvout_create_encoders(struct drm_device *dev,
+		struct sti_tvout *tvout)
+{
+	tvout->hdmi = sti_tvout_create_hdmi_encoder(dev, tvout);
+	tvout->hda = sti_tvout_create_hda_encoder(dev, tvout);
+	tvout->dvo = sti_tvout_create_dvo_encoder(dev, tvout);
+}
+
+static void sti_tvout_destroy_encoders(struct sti_tvout *tvout)
+{
+	if (tvout->hdmi)
+		drm_encoder_cleanup(tvout->hdmi);
+	tvout->hdmi = NULL;
+
+	if (tvout->hda)
+		drm_encoder_cleanup(tvout->hda);
+	tvout->hda = NULL;
+
+	if (tvout->dvo)
+		drm_encoder_cleanup(tvout->dvo);
+	tvout->dvo = NULL;
+}
+
+static int sti_tvout_bind(struct device *dev, struct device *master, void *data)
+{
+	struct sti_tvout *tvout = dev_get_drvdata(dev);
+	struct drm_device *drm_dev = data;
+
+	tvout->drm_dev = drm_dev;
+
+	sti_tvout_create_encoders(drm_dev, tvout);
+
+	return 0;
+}
+
+static void sti_tvout_unbind(struct device *dev, struct device *master,
+	void *data)
+{
+	struct sti_tvout *tvout = dev_get_drvdata(dev);
+
+	sti_tvout_destroy_encoders(tvout);
+}
+
+static const struct component_ops sti_tvout_ops = {
+	.bind	= sti_tvout_bind,
+	.unbind	= sti_tvout_unbind,
+};
+
+static int sti_tvout_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct device_node *node = dev->of_node;
+	struct sti_tvout *tvout;
+	struct resource *res;
+
+	DRM_INFO("%s\n", __func__);
+
+	if (!node)
+		return -ENODEV;
+
+	tvout = devm_kzalloc(dev, sizeof(*tvout), GFP_KERNEL);
+	if (!tvout)
+		return -ENOMEM;
+
+	tvout->dev = dev;
+
+	/* get memory resources */
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tvout-reg");
+	if (!res) {
+		DRM_ERROR("Invalid glue resource\n");
+		return -ENOMEM;
+	}
+	tvout->regs = devm_ioremap_nocache(dev, res->start, resource_size(res));
+	if (!tvout->regs)
+		return -ENOMEM;
+
+	/* get reset resources */
+	tvout->reset = devm_reset_control_get(dev, "tvout");
+	/* take tvout out of reset */
+	if (!IS_ERR(tvout->reset))
+		reset_control_deassert(tvout->reset);
+
+	platform_set_drvdata(pdev, tvout);
+
+	return component_add(dev, &sti_tvout_ops);
+}
+
+static int sti_tvout_remove(struct platform_device *pdev)
+{
+	component_del(&pdev->dev, &sti_tvout_ops);
+	return 0;
+}
+
+static const struct of_device_id tvout_of_match[] = {
+	{ .compatible = "st,stih407-tvout", },
+	{ /* end node */ }
+};
+MODULE_DEVICE_TABLE(of, tvout_of_match);
+
+struct platform_driver sti_tvout_driver = {
+	.driver = {
+		.name = "sti-tvout",
+		.owner = THIS_MODULE,
+		.of_match_table = tvout_of_match,
+	},
+	.probe = sti_tvout_probe,
+	.remove = sti_tvout_remove,
+};
+
+MODULE_AUTHOR("Benjamin Gaignard <benjamin.gaignard@st.com>");
+MODULE_DESCRIPTION("STMicroelectronics SoC DRM driver");
+MODULE_LICENSE("GPL");