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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
| commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
| tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | |
| parent | Initial commit. (diff) | |
| download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip | |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/bridge/synopsys/dw-hdmi.c')
| -rw-r--r-- | drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 3712 |
1 files changed, 3712 insertions, 0 deletions
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c new file mode 100644 index 000000000..aa51c61a7 --- /dev/null +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c @@ -0,0 +1,3712 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * DesignWare High-Definition Multimedia Interface (HDMI) driver + * + * Copyright (C) 2013-2015 Mentor Graphics Inc. + * Copyright (C) 2011-2013 Freescale Semiconductor, Inc. + * Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de> + */ +#include <linux/clk.h> +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/hdmi.h> +#include <linux/i2c.h> +#include <linux/irq.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/of_device.h> +#include <linux/pinctrl/consumer.h> +#include <linux/regmap.h> +#include <linux/dma-mapping.h> +#include <linux/spinlock.h> + +#include <media/cec-notifier.h> + +#include <uapi/linux/media-bus-format.h> +#include <uapi/linux/videodev2.h> + +#include <drm/bridge/dw_hdmi.h> +#include <drm/display/drm_hdmi_helper.h> +#include <drm/display/drm_scdc_helper.h> +#include <drm/drm_atomic.h> +#include <drm/drm_atomic_helper.h> +#include <drm/drm_bridge.h> +#include <drm/drm_of.h> +#include <drm/drm_print.h> +#include <drm/drm_probe_helper.h> + +#include "dw-hdmi-audio.h" +#include "dw-hdmi-cec.h" +#include "dw-hdmi.h" + +#define DDC_CI_ADDR 0x37 +#define DDC_SEGMENT_ADDR 0x30 + +#define HDMI_EDID_LEN 512 + +/* DW-HDMI Controller >= 0x200a are at least compliant with SCDC version 1 */ +#define SCDC_MIN_SOURCE_VERSION 0x1 + +#define HDMI14_MAX_TMDSCLK 340000000 + +enum hdmi_datamap { + RGB444_8B = 0x01, + RGB444_10B = 0x03, + RGB444_12B = 0x05, + RGB444_16B = 0x07, + YCbCr444_8B = 0x09, + YCbCr444_10B = 0x0B, + YCbCr444_12B = 0x0D, + YCbCr444_16B = 0x0F, + YCbCr422_8B = 0x16, + YCbCr422_10B = 0x14, + YCbCr422_12B = 0x12, +}; + +static const u16 csc_coeff_default[3][4] = { + { 0x2000, 0x0000, 0x0000, 0x0000 }, + { 0x0000, 0x2000, 0x0000, 0x0000 }, + { 0x0000, 0x0000, 0x2000, 0x0000 } +}; + +static const u16 csc_coeff_rgb_out_eitu601[3][4] = { + { 0x2000, 0x6926, 0x74fd, 0x010e }, + { 0x2000, 0x2cdd, 0x0000, 0x7e9a }, + { 0x2000, 0x0000, 0x38b4, 0x7e3b } +}; + +static const u16 csc_coeff_rgb_out_eitu709[3][4] = { + { 0x2000, 0x7106, 0x7a02, 0x00a7 }, + { 0x2000, 0x3264, 0x0000, 0x7e6d }, + { 0x2000, 0x0000, 0x3b61, 0x7e25 } +}; + +static const u16 csc_coeff_rgb_in_eitu601[3][4] = { + { 0x2591, 0x1322, 0x074b, 0x0000 }, + { 0x6535, 0x2000, 0x7acc, 0x0200 }, + { 0x6acd, 0x7534, 0x2000, 0x0200 } +}; + +static const u16 csc_coeff_rgb_in_eitu709[3][4] = { + { 0x2dc5, 0x0d9b, 0x049e, 0x0000 }, + { 0x62f0, 0x2000, 0x7d11, 0x0200 }, + { 0x6756, 0x78ab, 0x2000, 0x0200 } +}; + +static const u16 csc_coeff_rgb_full_to_rgb_limited[3][4] = { + { 0x1b7c, 0x0000, 0x0000, 0x0020 }, + { 0x0000, 0x1b7c, 0x0000, 0x0020 }, + { 0x0000, 0x0000, 0x1b7c, 0x0020 } +}; + +struct hdmi_vmode { + bool mdataenablepolarity; + + unsigned int mpixelclock; + unsigned int mpixelrepetitioninput; + unsigned int mpixelrepetitionoutput; + unsigned int mtmdsclock; +}; + +struct hdmi_data_info { + unsigned int enc_in_bus_format; + unsigned int enc_out_bus_format; + unsigned int enc_in_encoding; + unsigned int enc_out_encoding; + unsigned int pix_repet_factor; + unsigned int hdcp_enable; + struct hdmi_vmode video_mode; + bool rgb_limited_range; +}; + +struct dw_hdmi_i2c { + struct i2c_adapter adap; + + struct mutex lock; /* used to serialize data transfers */ + struct completion cmp; + u8 stat; + + u8 slave_reg; + bool is_regaddr; + bool is_segment; +}; + +struct dw_hdmi_phy_data { + enum dw_hdmi_phy_type type; + const char *name; + unsigned int gen; + bool has_svsret; + int (*configure)(struct dw_hdmi *hdmi, + const struct dw_hdmi_plat_data *pdata, + unsigned long mpixelclock); +}; + +struct dw_hdmi { + struct drm_connector connector; + struct drm_bridge bridge; + struct drm_bridge *next_bridge; + + unsigned int version; + + struct platform_device *audio; + struct platform_device *cec; + struct device *dev; + struct clk *isfr_clk; + struct clk *iahb_clk; + struct clk *cec_clk; + struct dw_hdmi_i2c *i2c; + + struct hdmi_data_info hdmi_data; + const struct dw_hdmi_plat_data *plat_data; + + int vic; + + u8 edid[HDMI_EDID_LEN]; + + struct { + const struct dw_hdmi_phy_ops *ops; + const char *name; + void *data; + bool enabled; + } phy; + + struct drm_display_mode previous_mode; + + struct i2c_adapter *ddc; + void __iomem *regs; + bool sink_is_hdmi; + bool sink_has_audio; + + struct pinctrl *pinctrl; + struct pinctrl_state *default_state; + struct pinctrl_state *unwedge_state; + + struct mutex mutex; /* for state below and previous_mode */ + enum drm_connector_force force; /* mutex-protected force state */ + struct drm_connector *curr_conn;/* current connector (only valid when !disabled) */ + bool disabled; /* DRM has disabled our bridge */ + bool bridge_is_on; /* indicates the bridge is on */ + bool rxsense; /* rxsense state */ + u8 phy_mask; /* desired phy int mask settings */ + u8 mc_clkdis; /* clock disable register */ + + spinlock_t audio_lock; + struct mutex audio_mutex; + unsigned int sample_non_pcm; + unsigned int sample_width; + unsigned int sample_rate; + unsigned int channels; + unsigned int audio_cts; + unsigned int audio_n; + bool audio_enable; + + unsigned int reg_shift; + struct regmap *regm; + void (*enable_audio)(struct dw_hdmi *hdmi); + void (*disable_audio)(struct dw_hdmi *hdmi); + + struct mutex cec_notifier_mutex; + struct cec_notifier *cec_notifier; + + hdmi_codec_plugged_cb plugged_cb; + struct device *codec_dev; + enum drm_connector_status last_connector_result; +}; + +#define HDMI_IH_PHY_STAT0_RX_SENSE \ + (HDMI_IH_PHY_STAT0_RX_SENSE0 | HDMI_IH_PHY_STAT0_RX_SENSE1 | \ + HDMI_IH_PHY_STAT0_RX_SENSE2 | HDMI_IH_PHY_STAT0_RX_SENSE3) + +#define HDMI_PHY_RX_SENSE \ + (HDMI_PHY_RX_SENSE0 | HDMI_PHY_RX_SENSE1 | \ + HDMI_PHY_RX_SENSE2 | HDMI_PHY_RX_SENSE3) + +static inline void hdmi_writeb(struct dw_hdmi *hdmi, u8 val, int offset) +{ + regmap_write(hdmi->regm, offset << hdmi->reg_shift, val); +} + +static inline u8 hdmi_readb(struct dw_hdmi *hdmi, int offset) +{ + unsigned int val = 0; + + regmap_read(hdmi->regm, offset << hdmi->reg_shift, &val); + + return val; +} + +static void handle_plugged_change(struct dw_hdmi *hdmi, bool plugged) +{ + if (hdmi->plugged_cb && hdmi->codec_dev) + hdmi->plugged_cb(hdmi->codec_dev, plugged); +} + +int dw_hdmi_set_plugged_cb(struct dw_hdmi *hdmi, hdmi_codec_plugged_cb fn, + struct device *codec_dev) +{ + bool plugged; + + mutex_lock(&hdmi->mutex); + hdmi->plugged_cb = fn; + hdmi->codec_dev = codec_dev; + plugged = hdmi->last_connector_result == connector_status_connected; + handle_plugged_change(hdmi, plugged); + mutex_unlock(&hdmi->mutex); + + return 0; +} +EXPORT_SYMBOL_GPL(dw_hdmi_set_plugged_cb); + +static void hdmi_modb(struct dw_hdmi *hdmi, u8 data, u8 mask, unsigned reg) +{ + regmap_update_bits(hdmi->regm, reg << hdmi->reg_shift, mask, data); +} + +static void hdmi_mask_writeb(struct dw_hdmi *hdmi, u8 data, unsigned int reg, + u8 shift, u8 mask) +{ + hdmi_modb(hdmi, data << shift, mask, reg); +} + +static void dw_hdmi_i2c_init(struct dw_hdmi *hdmi) +{ + hdmi_writeb(hdmi, HDMI_PHY_I2CM_INT_ADDR_DONE_POL, + HDMI_PHY_I2CM_INT_ADDR); + + hdmi_writeb(hdmi, HDMI_PHY_I2CM_CTLINT_ADDR_NAC_POL | + HDMI_PHY_I2CM_CTLINT_ADDR_ARBITRATION_POL, + HDMI_PHY_I2CM_CTLINT_ADDR); + + /* Software reset */ + hdmi_writeb(hdmi, 0x00, HDMI_I2CM_SOFTRSTZ); + + /* Set Standard Mode speed (determined to be 100KHz on iMX6) */ + hdmi_writeb(hdmi, 0x00, HDMI_I2CM_DIV); + + /* Set done, not acknowledged and arbitration interrupt polarities */ + hdmi_writeb(hdmi, HDMI_I2CM_INT_DONE_POL, HDMI_I2CM_INT); + hdmi_writeb(hdmi, HDMI_I2CM_CTLINT_NAC_POL | HDMI_I2CM_CTLINT_ARB_POL, + HDMI_I2CM_CTLINT); + + /* Clear DONE and ERROR interrupts */ + hdmi_writeb(hdmi, HDMI_IH_I2CM_STAT0_ERROR | HDMI_IH_I2CM_STAT0_DONE, + HDMI_IH_I2CM_STAT0); + + /* Mute DONE and ERROR interrupts */ + hdmi_writeb(hdmi, HDMI_IH_I2CM_STAT0_ERROR | HDMI_IH_I2CM_STAT0_DONE, + HDMI_IH_MUTE_I2CM_STAT0); +} + +static bool dw_hdmi_i2c_unwedge(struct dw_hdmi *hdmi) +{ + /* If no unwedge state then give up */ + if (!hdmi->unwedge_state) + return false; + + dev_info(hdmi->dev, "Attempting to unwedge stuck i2c bus\n"); + + /* + * This is a huge hack to workaround a problem where the dw_hdmi i2c + * bus could sometimes get wedged. Once wedged there doesn't appear + * to be any way to unwedge it (including the HDMI_I2CM_SOFTRSTZ) + * other than pulsing the SDA line. + * + * We appear to be able to pulse the SDA line (in the eyes of dw_hdmi) + * by: + * 1. Remux the pin as a GPIO output, driven low. + * 2. Wait a little while. 1 ms seems to work, but we'll do 10. + * 3. Immediately jump to remux the pin as dw_hdmi i2c again. + * + * At the moment of remuxing, the line will still be low due to its + * recent stint as an output, but then it will be pulled high by the + * (presumed) external pullup. dw_hdmi seems to see this as a rising + * edge and that seems to get it out of its jam. + * + * This wedging was only ever seen on one TV, and only on one of + * its HDMI ports. It happened when the TV was powered on while the + * device was plugged in. A scope trace shows the TV bringing both SDA + * and SCL low, then bringing them both back up at roughly the same + * time. Presumably this confuses dw_hdmi because it saw activity but + * no real STOP (maybe it thinks there's another master on the bus?). + * Giving it a clean rising edge of SDA while SCL is already high + * presumably makes dw_hdmi see a STOP which seems to bring dw_hdmi out + * of its stupor. + * + * Note that after coming back alive, transfers seem to immediately + * resume, so if we unwedge due to a timeout we should wait a little + * longer for our transfer to finish, since it might have just started + * now. + */ + pinctrl_select_state(hdmi->pinctrl, hdmi->unwedge_state); + msleep(10); + pinctrl_select_state(hdmi->pinctrl, hdmi->default_state); + + return true; +} + +static int dw_hdmi_i2c_wait(struct dw_hdmi *hdmi) +{ + struct dw_hdmi_i2c *i2c = hdmi->i2c; + int stat; + + stat = wait_for_completion_timeout(&i2c->cmp, HZ / 10); + if (!stat) { + /* If we can't unwedge, return timeout */ + if (!dw_hdmi_i2c_unwedge(hdmi)) + return -EAGAIN; + + /* We tried to unwedge; give it another chance */ + stat = wait_for_completion_timeout(&i2c->cmp, HZ / 10); + if (!stat) + return -EAGAIN; + } + + /* Check for error condition on the bus */ + if (i2c->stat & HDMI_IH_I2CM_STAT0_ERROR) + return -EIO; + + return 0; +} + +static int dw_hdmi_i2c_read(struct dw_hdmi *hdmi, + unsigned char *buf, unsigned int length) +{ + struct dw_hdmi_i2c *i2c = hdmi->i2c; + int ret; + + if (!i2c->is_regaddr) { + dev_dbg(hdmi->dev, "set read register address to 0\n"); + i2c->slave_reg = 0x00; + i2c->is_regaddr = true; + } + + while (length--) { + reinit_completion(&i2c->cmp); + + hdmi_writeb(hdmi, i2c->slave_reg++, HDMI_I2CM_ADDRESS); + if (i2c->is_segment) + hdmi_writeb(hdmi, HDMI_I2CM_OPERATION_READ_EXT, + HDMI_I2CM_OPERATION); + else + hdmi_writeb(hdmi, HDMI_I2CM_OPERATION_READ, + HDMI_I2CM_OPERATION); + + ret = dw_hdmi_i2c_wait(hdmi); + if (ret) + return ret; + + *buf++ = hdmi_readb(hdmi, HDMI_I2CM_DATAI); + } + i2c->is_segment = false; + + return 0; +} + +static int dw_hdmi_i2c_write(struct dw_hdmi *hdmi, + unsigned char *buf, unsigned int length) +{ + struct dw_hdmi_i2c *i2c = hdmi->i2c; + int ret; + + if (!i2c->is_regaddr) { + /* Use the first write byte as register address */ + i2c->slave_reg = buf[0]; + length--; + buf++; + i2c->is_regaddr = true; + } + + while (length--) { + reinit_completion(&i2c->cmp); + + hdmi_writeb(hdmi, *buf++, HDMI_I2CM_DATAO); + hdmi_writeb(hdmi, i2c->slave_reg++, HDMI_I2CM_ADDRESS); + hdmi_writeb(hdmi, HDMI_I2CM_OPERATION_WRITE, + HDMI_I2CM_OPERATION); + + ret = dw_hdmi_i2c_wait(hdmi); + if (ret) + return ret; + } + + return 0; +} + +static int dw_hdmi_i2c_xfer(struct i2c_adapter *adap, + struct i2c_msg *msgs, int num) +{ + struct dw_hdmi *hdmi = i2c_get_adapdata(adap); + struct dw_hdmi_i2c *i2c = hdmi->i2c; + u8 addr = msgs[0].addr; + int i, ret = 0; + + if (addr == DDC_CI_ADDR) + /* + * The internal I2C controller does not support the multi-byte + * read and write operations needed for DDC/CI. + * TOFIX: Blacklist the DDC/CI address until we filter out + * unsupported I2C operations. + */ + return -EOPNOTSUPP; + + dev_dbg(hdmi->dev, "xfer: num: %d, addr: %#x\n", num, addr); + + for (i = 0; i < num; i++) { + if (msgs[i].len == 0) { + dev_dbg(hdmi->dev, + "unsupported transfer %d/%d, no data\n", + i + 1, num); + return -EOPNOTSUPP; + } + } + + mutex_lock(&i2c->lock); + + /* Unmute DONE and ERROR interrupts */ + hdmi_writeb(hdmi, 0x00, HDMI_IH_MUTE_I2CM_STAT0); + + /* Set slave device address taken from the first I2C message */ + hdmi_writeb(hdmi, addr, HDMI_I2CM_SLAVE); + + /* Set slave device register address on transfer */ + i2c->is_regaddr = false; + + /* Set segment pointer for I2C extended read mode operation */ + i2c->is_segment = false; + + for (i = 0; i < num; i++) { + dev_dbg(hdmi->dev, "xfer: num: %d/%d, len: %d, flags: %#x\n", + i + 1, num, msgs[i].len, msgs[i].flags); + if (msgs[i].addr == DDC_SEGMENT_ADDR && msgs[i].len == 1) { + i2c->is_segment = true; + hdmi_writeb(hdmi, DDC_SEGMENT_ADDR, HDMI_I2CM_SEGADDR); + hdmi_writeb(hdmi, *msgs[i].buf, HDMI_I2CM_SEGPTR); + } else { + if (msgs[i].flags & I2C_M_RD) + ret = dw_hdmi_i2c_read(hdmi, msgs[i].buf, + msgs[i].len); + else + ret = dw_hdmi_i2c_write(hdmi, msgs[i].buf, + msgs[i].len); + } + if (ret < 0) + break; + } + + if (!ret) + ret = num; + + /* Mute DONE and ERROR interrupts */ + hdmi_writeb(hdmi, HDMI_IH_I2CM_STAT0_ERROR | HDMI_IH_I2CM_STAT0_DONE, + HDMI_IH_MUTE_I2CM_STAT0); + + mutex_unlock(&i2c->lock); + + return ret; +} + +static u32 dw_hdmi_i2c_func(struct i2c_adapter *adapter) +{ + return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; +} + +static const struct i2c_algorithm dw_hdmi_algorithm = { + .master_xfer = dw_hdmi_i2c_xfer, + .functionality = dw_hdmi_i2c_func, +}; + +static struct i2c_adapter *dw_hdmi_i2c_adapter(struct dw_hdmi *hdmi) +{ + struct i2c_adapter *adap; + struct dw_hdmi_i2c *i2c; + int ret; + + i2c = devm_kzalloc(hdmi->dev, sizeof(*i2c), GFP_KERNEL); + if (!i2c) + return ERR_PTR(-ENOMEM); + + mutex_init(&i2c->lock); + init_completion(&i2c->cmp); + + adap = &i2c->adap; + adap->class = I2C_CLASS_DDC; + adap->owner = THIS_MODULE; + adap->dev.parent = hdmi->dev; + adap->algo = &dw_hdmi_algorithm; + strlcpy(adap->name, "DesignWare HDMI", sizeof(adap->name)); + i2c_set_adapdata(adap, hdmi); + + ret = i2c_add_adapter(adap); + if (ret) { + dev_warn(hdmi->dev, "cannot add %s I2C adapter\n", adap->name); + devm_kfree(hdmi->dev, i2c); + return ERR_PTR(ret); + } + + hdmi->i2c = i2c; + + dev_info(hdmi->dev, "registered %s I2C bus driver\n", adap->name); + + return adap; +} + +static void hdmi_set_cts_n(struct dw_hdmi *hdmi, unsigned int cts, + unsigned int n) +{ + /* Must be set/cleared first */ + hdmi_modb(hdmi, 0, HDMI_AUD_CTS3_CTS_MANUAL, HDMI_AUD_CTS3); + + /* nshift factor = 0 */ + hdmi_modb(hdmi, 0, HDMI_AUD_CTS3_N_SHIFT_MASK, HDMI_AUD_CTS3); + + /* Use automatic CTS generation mode when CTS is not set */ + if (cts) + hdmi_writeb(hdmi, ((cts >> 16) & + HDMI_AUD_CTS3_AUDCTS19_16_MASK) | + HDMI_AUD_CTS3_CTS_MANUAL, + HDMI_AUD_CTS3); + else + hdmi_writeb(hdmi, 0, HDMI_AUD_CTS3); + hdmi_writeb(hdmi, (cts >> 8) & 0xff, HDMI_AUD_CTS2); + hdmi_writeb(hdmi, cts & 0xff, HDMI_AUD_CTS1); + + hdmi_writeb(hdmi, (n >> 16) & 0x0f, HDMI_AUD_N3); + hdmi_writeb(hdmi, (n >> 8) & 0xff, HDMI_AUD_N2); + hdmi_writeb(hdmi, n & 0xff, HDMI_AUD_N1); +} + +static unsigned int hdmi_compute_n(unsigned int freq, unsigned long pixel_clk) +{ + unsigned int n = (128 * freq) / 1000; + unsigned int mult = 1; + + while (freq > 48000) { + mult *= 2; + freq /= 2; + } + + switch (freq) { + case 32000: + if (pixel_clk == 25175000) + n = 4576; + else if (pixel_clk == 27027000) + n = 4096; + else if (pixel_clk == 74176000 || pixel_clk == 148352000) + n = 11648; + else if (pixel_clk == 297000000) + n = 3072; + else + n = 4096; + n *= mult; + break; + + case 44100: + if (pixel_clk == 25175000) + n = 7007; + else if (pixel_clk == 74176000) + n = 17836; + else if (pixel_clk == 148352000) + n = 8918; + else if (pixel_clk == 297000000) + n = 4704; + else + n = 6272; + n *= mult; + break; + + case 48000: + if (pixel_clk == 25175000) + n = 6864; + else if (pixel_clk == 27027000) + n = 6144; + else if (pixel_clk == 74176000) + n = 11648; + else if (pixel_clk == 148352000) + n = 5824; + else if (pixel_clk == 297000000) + n = 5120; + else + n = 6144; + n *= mult; + break; + + default: + break; + } + + return n; +} + +/* + * When transmitting IEC60958 linear PCM audio, these registers allow to + * configure the channel status information of all the channel status + * bits in the IEC60958 frame. For the moment this configuration is only + * used when the I2S audio interface, General Purpose Audio (GPA), + * or AHB audio DMA (AHBAUDDMA) interface is active + * (for S/PDIF interface this information comes from the stream). + */ +void dw_hdmi_set_channel_status(struct dw_hdmi *hdmi, + u8 *channel_status) +{ + /* + * Set channel status register for frequency and word length. + * Use default values for other registers. + */ + hdmi_writeb(hdmi, channel_status[3], HDMI_FC_AUDSCHNLS7); + hdmi_writeb(hdmi, channel_status[4], HDMI_FC_AUDSCHNLS8); +} +EXPORT_SYMBOL_GPL(dw_hdmi_set_channel_status); + +static void hdmi_set_clk_regenerator(struct dw_hdmi *hdmi, + unsigned long pixel_clk, unsigned int sample_rate) +{ + unsigned long ftdms = pixel_clk; + unsigned int n, cts; + u8 config3; + u64 tmp; + + n = hdmi_compute_n(sample_rate, pixel_clk); + + config3 = hdmi_readb(hdmi, HDMI_CONFIG3_ID); + + /* Compute CTS when using internal AHB audio or General Parallel audio*/ + if ((config3 & HDMI_CONFIG3_AHBAUDDMA) || (config3 & HDMI_CONFIG3_GPAUD)) { + /* + * Compute the CTS value from the N value. Note that CTS and N + * can be up to 20 bits in total, so we need 64-bit math. Also + * note that our TDMS clock is not fully accurate; it is + * accurate to kHz. This can introduce an unnecessary remainder + * in the calculation below, so we don't try to warn about that. + */ + tmp = (u64)ftdms * n; + do_div(tmp, 128 * sample_rate); + cts = tmp; + + dev_dbg(hdmi->dev, "%s: fs=%uHz ftdms=%lu.%03luMHz N=%d cts=%d\n", + __func__, sample_rate, + ftdms / 1000000, (ftdms / 1000) % 1000, + n, cts); + } else { + cts = 0; + } + + spin_lock_irq(&hdmi->audio_lock); + hdmi->audio_n = n; + hdmi->audio_cts = cts; + hdmi_set_cts_n(hdmi, cts, hdmi->audio_enable ? n : 0); + spin_unlock_irq(&hdmi->audio_lock); +} + +static void hdmi_init_clk_regenerator(struct dw_hdmi *hdmi) +{ + mutex_lock(&hdmi->audio_mutex); + hdmi_set_clk_regenerator(hdmi, 74250000, hdmi->sample_rate); + mutex_unlock(&hdmi->audio_mutex); +} + +static void hdmi_clk_regenerator_update_pixel_clock(struct dw_hdmi *hdmi) +{ + mutex_lock(&hdmi->audio_mutex); + hdmi_set_clk_regenerator(hdmi, hdmi->hdmi_data.video_mode.mtmdsclock, + hdmi->sample_rate); + mutex_unlock(&hdmi->audio_mutex); +} + +void dw_hdmi_set_sample_width(struct dw_hdmi *hdmi, unsigned int width) +{ + mutex_lock(&hdmi->audio_mutex); + hdmi->sample_width = width; + mutex_unlock(&hdmi->audio_mutex); +} +EXPORT_SYMBOL_GPL(dw_hdmi_set_sample_width); + +void dw_hdmi_set_sample_non_pcm(struct dw_hdmi *hdmi, unsigned int non_pcm) +{ + mutex_lock(&hdmi->audio_mutex); + hdmi->sample_non_pcm = non_pcm; + mutex_unlock(&hdmi->audio_mutex); +} +EXPORT_SYMBOL_GPL(dw_hdmi_set_sample_non_pcm); + +void dw_hdmi_set_sample_rate(struct dw_hdmi *hdmi, unsigned int rate) +{ + mutex_lock(&hdmi->audio_mutex); + hdmi->sample_rate = rate; + hdmi_set_clk_regenerator(hdmi, hdmi->hdmi_data.video_mode.mtmdsclock, + hdmi->sample_rate); + mutex_unlock(&hdmi->audio_mutex); +} +EXPORT_SYMBOL_GPL(dw_hdmi_set_sample_rate); + +void dw_hdmi_set_channel_count(struct dw_hdmi *hdmi, unsigned int cnt) +{ + u8 layout; + + mutex_lock(&hdmi->audio_mutex); + hdmi->channels = cnt; + + /* + * For >2 channel PCM audio, we need to select layout 1 + * and set an appropriate channel map. + */ + if (cnt > 2) + layout = HDMI_FC_AUDSCONF_AUD_PACKET_LAYOUT_LAYOUT1; + else + layout = HDMI_FC_AUDSCONF_AUD_PACKET_LAYOUT_LAYOUT0; + + hdmi_modb(hdmi, layout, HDMI_FC_AUDSCONF_AUD_PACKET_LAYOUT_MASK, + HDMI_FC_AUDSCONF); + + /* Set the audio infoframes channel count */ + hdmi_modb(hdmi, (cnt - 1) << HDMI_FC_AUDICONF0_CC_OFFSET, + HDMI_FC_AUDICONF0_CC_MASK, HDMI_FC_AUDICONF0); + + mutex_unlock(&hdmi->audio_mutex); +} +EXPORT_SYMBOL_GPL(dw_hdmi_set_channel_count); + +void dw_hdmi_set_channel_allocation(struct dw_hdmi *hdmi, unsigned int ca) +{ + mutex_lock(&hdmi->audio_mutex); + + hdmi_writeb(hdmi, ca, HDMI_FC_AUDICONF2); + + mutex_unlock(&hdmi->audio_mutex); +} +EXPORT_SYMBOL_GPL(dw_hdmi_set_channel_allocation); + +static void hdmi_enable_audio_clk(struct dw_hdmi *hdmi, bool enable) +{ + if (enable) + hdmi->mc_clkdis &= ~HDMI_MC_CLKDIS_AUDCLK_DISABLE; + else + hdmi->mc_clkdis |= HDMI_MC_CLKDIS_AUDCLK_DISABLE; + hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS); +} + +static u8 *hdmi_audio_get_eld(struct dw_hdmi *hdmi) +{ + if (!hdmi->curr_conn) + return NULL; + + return hdmi->curr_conn->eld; +} + +static void dw_hdmi_gp_audio_enable(struct dw_hdmi *hdmi) +{ + const struct dw_hdmi_plat_data *pdata = hdmi->plat_data; + int sample_freq = 0x2, org_sample_freq = 0xD; + int ch_mask = BIT(hdmi->channels) - 1; + + switch (hdmi->sample_rate) { + case 32000: + sample_freq = 0x03; + org_sample_freq = 0x0C; + break; + case 44100: + sample_freq = 0x00; + org_sample_freq = 0x0F; + break; + case 48000: + sample_freq = 0x02; + org_sample_freq = 0x0D; + break; + case 88200: + sample_freq = 0x08; + org_sample_freq = 0x07; + break; + case 96000: + sample_freq = 0x0A; + org_sample_freq = 0x05; + break; + case 176400: + sample_freq = 0x0C; + org_sample_freq = 0x03; + break; + case 192000: + sample_freq = 0x0E; + org_sample_freq = 0x01; + break; + default: + break; + } + + hdmi_set_cts_n(hdmi, hdmi->audio_cts, hdmi->audio_n); + hdmi_enable_audio_clk(hdmi, true); + + hdmi_writeb(hdmi, 0x1, HDMI_FC_AUDSCHNLS0); + hdmi_writeb(hdmi, hdmi->channels, HDMI_FC_AUDSCHNLS2); + hdmi_writeb(hdmi, 0x22, HDMI_FC_AUDSCHNLS3); + hdmi_writeb(hdmi, 0x22, HDMI_FC_AUDSCHNLS4); + hdmi_writeb(hdmi, 0x11, HDMI_FC_AUDSCHNLS5); + hdmi_writeb(hdmi, 0x11, HDMI_FC_AUDSCHNLS6); + hdmi_writeb(hdmi, (0x3 << 4) | sample_freq, HDMI_FC_AUDSCHNLS7); + hdmi_writeb(hdmi, (org_sample_freq << 4) | 0xb, HDMI_FC_AUDSCHNLS8); + + hdmi_writeb(hdmi, ch_mask, HDMI_GP_CONF1); + hdmi_writeb(hdmi, 0x02, HDMI_GP_CONF2); + hdmi_writeb(hdmi, 0x01, HDMI_GP_CONF0); + + hdmi_modb(hdmi, 0x3, 0x3, HDMI_FC_DATAUTO3); + + /* hbr */ + if (hdmi->sample_rate == 192000 && hdmi->channels == 8 && + hdmi->sample_width == 32 && hdmi->sample_non_pcm) + hdmi_modb(hdmi, 0x01, 0x01, HDMI_GP_CONF2); + + if (pdata->enable_audio) + pdata->enable_audio(hdmi, + hdmi->channels, + hdmi->sample_width, + hdmi->sample_rate, + hdmi->sample_non_pcm); +} + +static void dw_hdmi_gp_audio_disable(struct dw_hdmi *hdmi) +{ + const struct dw_hdmi_plat_data *pdata = hdmi->plat_data; + + hdmi_set_cts_n(hdmi, hdmi->audio_cts, 0); + + hdmi_modb(hdmi, 0, 0x3, HDMI_FC_DATAUTO3); + if (pdata->disable_audio) + pdata->disable_audio(hdmi); + + hdmi_enable_audio_clk(hdmi, false); +} + +static void dw_hdmi_ahb_audio_enable(struct dw_hdmi *hdmi) +{ + hdmi_set_cts_n(hdmi, hdmi->audio_cts, hdmi->audio_n); +} + +static void dw_hdmi_ahb_audio_disable(struct dw_hdmi *hdmi) +{ + hdmi_set_cts_n(hdmi, hdmi->audio_cts, 0); +} + +static void dw_hdmi_i2s_audio_enable(struct dw_hdmi *hdmi) +{ + hdmi_set_cts_n(hdmi, hdmi->audio_cts, hdmi->audio_n); + hdmi_enable_audio_clk(hdmi, true); +} + +static void dw_hdmi_i2s_audio_disable(struct dw_hdmi *hdmi) +{ + hdmi_enable_audio_clk(hdmi, false); +} + +void dw_hdmi_audio_enable(struct dw_hdmi *hdmi) +{ + unsigned long flags; + + spin_lock_irqsave(&hdmi->audio_lock, flags); + hdmi->audio_enable = true; + if (hdmi->enable_audio) + hdmi->enable_audio(hdmi); + spin_unlock_irqrestore(&hdmi->audio_lock, flags); +} +EXPORT_SYMBOL_GPL(dw_hdmi_audio_enable); + +void dw_hdmi_audio_disable(struct dw_hdmi *hdmi) +{ + unsigned long flags; + + spin_lock_irqsave(&hdmi->audio_lock, flags); + hdmi->audio_enable = false; + if (hdmi->disable_audio) + hdmi->disable_audio(hdmi); + spin_unlock_irqrestore(&hdmi->audio_lock, flags); +} +EXPORT_SYMBOL_GPL(dw_hdmi_audio_disable); + +static bool hdmi_bus_fmt_is_rgb(unsigned int bus_format) +{ + switch (bus_format) { + case MEDIA_BUS_FMT_RGB888_1X24: + case MEDIA_BUS_FMT_RGB101010_1X30: + case MEDIA_BUS_FMT_RGB121212_1X36: + case MEDIA_BUS_FMT_RGB161616_1X48: + return true; + + default: + return false; + } +} + +static bool hdmi_bus_fmt_is_yuv444(unsigned int bus_format) +{ + switch (bus_format) { + case MEDIA_BUS_FMT_YUV8_1X24: + case MEDIA_BUS_FMT_YUV10_1X30: + case MEDIA_BUS_FMT_YUV12_1X36: + case MEDIA_BUS_FMT_YUV16_1X48: + return true; + + default: + return false; + } +} + +static bool hdmi_bus_fmt_is_yuv422(unsigned int bus_format) +{ + switch (bus_format) { + case MEDIA_BUS_FMT_UYVY8_1X16: + case MEDIA_BUS_FMT_UYVY10_1X20: + case MEDIA_BUS_FMT_UYVY12_1X24: + return true; + + default: + return false; + } +} + +static bool hdmi_bus_fmt_is_yuv420(unsigned int bus_format) +{ + switch (bus_format) { + case MEDIA_BUS_FMT_UYYVYY8_0_5X24: + case MEDIA_BUS_FMT_UYYVYY10_0_5X30: + case MEDIA_BUS_FMT_UYYVYY12_0_5X36: + case MEDIA_BUS_FMT_UYYVYY16_0_5X48: + return true; + + default: + return false; + } +} + +static int hdmi_bus_fmt_color_depth(unsigned int bus_format) +{ + switch (bus_format) { + case MEDIA_BUS_FMT_RGB888_1X24: + case MEDIA_BUS_FMT_YUV8_1X24: + case MEDIA_BUS_FMT_UYVY8_1X16: + case MEDIA_BUS_FMT_UYYVYY8_0_5X24: + return 8; + + case MEDIA_BUS_FMT_RGB101010_1X30: + case MEDIA_BUS_FMT_YUV10_1X30: + case MEDIA_BUS_FMT_UYVY10_1X20: + case MEDIA_BUS_FMT_UYYVYY10_0_5X30: + return 10; + + case MEDIA_BUS_FMT_RGB121212_1X36: + case MEDIA_BUS_FMT_YUV12_1X36: + case MEDIA_BUS_FMT_UYVY12_1X24: + case MEDIA_BUS_FMT_UYYVYY12_0_5X36: + return 12; + + case MEDIA_BUS_FMT_RGB161616_1X48: + case MEDIA_BUS_FMT_YUV16_1X48: + case MEDIA_BUS_FMT_UYYVYY16_0_5X48: + return 16; + + default: + return 0; + } +} + +/* + * this submodule is responsible for the video data synchronization. + * for example, for RGB 4:4:4 input, the data map is defined as + * pin{47~40} <==> R[7:0] + * pin{31~24} <==> G[7:0] + * pin{15~8} <==> B[7:0] + */ +static void hdmi_video_sample(struct dw_hdmi *hdmi) +{ + int color_format = 0; + u8 val; + + switch (hdmi->hdmi_data.enc_in_bus_format) { + case MEDIA_BUS_FMT_RGB888_1X24: + color_format = 0x01; + break; + case MEDIA_BUS_FMT_RGB101010_1X30: + color_format = 0x03; + break; + case MEDIA_BUS_FMT_RGB121212_1X36: + color_format = 0x05; + break; + case MEDIA_BUS_FMT_RGB161616_1X48: + color_format = 0x07; + break; + + case MEDIA_BUS_FMT_YUV8_1X24: + case MEDIA_BUS_FMT_UYYVYY8_0_5X24: + color_format = 0x09; + break; + case MEDIA_BUS_FMT_YUV10_1X30: + case MEDIA_BUS_FMT_UYYVYY10_0_5X30: + color_format = 0x0B; + break; + case MEDIA_BUS_FMT_YUV12_1X36: + case MEDIA_BUS_FMT_UYYVYY12_0_5X36: + color_format = 0x0D; + break; + case MEDIA_BUS_FMT_YUV16_1X48: + case MEDIA_BUS_FMT_UYYVYY16_0_5X48: + color_format = 0x0F; + break; + + case MEDIA_BUS_FMT_UYVY8_1X16: + color_format = 0x16; + break; + case MEDIA_BUS_FMT_UYVY10_1X20: + color_format = 0x14; + break; + case MEDIA_BUS_FMT_UYVY12_1X24: + color_format = 0x12; + break; + + default: + return; + } + + val = HDMI_TX_INVID0_INTERNAL_DE_GENERATOR_DISABLE | + ((color_format << HDMI_TX_INVID0_VIDEO_MAPPING_OFFSET) & + HDMI_TX_INVID0_VIDEO_MAPPING_MASK); + hdmi_writeb(hdmi, val, HDMI_TX_INVID0); + + /* Enable TX stuffing: When DE is inactive, fix the output data to 0 */ + val = HDMI_TX_INSTUFFING_BDBDATA_STUFFING_ENABLE | + HDMI_TX_INSTUFFING_RCRDATA_STUFFING_ENABLE | + HDMI_TX_INSTUFFING_GYDATA_STUFFING_ENABLE; + hdmi_writeb(hdmi, val, HDMI_TX_INSTUFFING); + hdmi_writeb(hdmi, 0x0, HDMI_TX_GYDATA0); + hdmi_writeb(hdmi, 0x0, HDMI_TX_GYDATA1); + hdmi_writeb(hdmi, 0x0, HDMI_TX_RCRDATA0); + hdmi_writeb(hdmi, 0x0, HDMI_TX_RCRDATA1); + hdmi_writeb(hdmi, 0x0, HDMI_TX_BCBDATA0); + hdmi_writeb(hdmi, 0x0, HDMI_TX_BCBDATA1); +} + +static int is_color_space_conversion(struct dw_hdmi *hdmi) +{ + struct hdmi_data_info *hdmi_data = &hdmi->hdmi_data; + bool is_input_rgb, is_output_rgb; + + is_input_rgb = hdmi_bus_fmt_is_rgb(hdmi_data->enc_in_bus_format); + is_output_rgb = hdmi_bus_fmt_is_rgb(hdmi_data->enc_out_bus_format); + + return (is_input_rgb != is_output_rgb) || + (is_input_rgb && is_output_rgb && hdmi_data->rgb_limited_range); +} + +static int is_color_space_decimation(struct dw_hdmi *hdmi) +{ + if (!hdmi_bus_fmt_is_yuv422(hdmi->hdmi_data.enc_out_bus_format)) + return 0; + + if (hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_in_bus_format) || + hdmi_bus_fmt_is_yuv444(hdmi->hdmi_data.enc_in_bus_format)) + return 1; + + return 0; +} + +static int is_color_space_interpolation(struct dw_hdmi *hdmi) +{ + if (!hdmi_bus_fmt_is_yuv422(hdmi->hdmi_data.enc_in_bus_format)) + return 0; + + if (hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_out_bus_format) || + hdmi_bus_fmt_is_yuv444(hdmi->hdmi_data.enc_out_bus_format)) + return 1; + + return 0; +} + +static bool is_csc_needed(struct dw_hdmi *hdmi) +{ + return is_color_space_conversion(hdmi) || + is_color_space_decimation(hdmi) || + is_color_space_interpolation(hdmi); +} + +static void dw_hdmi_update_csc_coeffs(struct dw_hdmi *hdmi) +{ + const u16 (*csc_coeff)[3][4] = &csc_coeff_default; + bool is_input_rgb, is_output_rgb; + unsigned i; + u32 csc_scale = 1; + + is_input_rgb = hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_in_bus_format); + is_output_rgb = hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_out_bus_format); + + if (!is_input_rgb && is_output_rgb) { + if (hdmi->hdmi_data.enc_out_encoding == V4L2_YCBCR_ENC_601) + csc_coeff = &csc_coeff_rgb_out_eitu601; + else + csc_coeff = &csc_coeff_rgb_out_eitu709; + } else if (is_input_rgb && !is_output_rgb) { + if (hdmi->hdmi_data.enc_out_encoding == V4L2_YCBCR_ENC_601) + csc_coeff = &csc_coeff_rgb_in_eitu601; + else + csc_coeff = &csc_coeff_rgb_in_eitu709; + csc_scale = 0; + } else if (is_input_rgb && is_output_rgb && + hdmi->hdmi_data.rgb_limited_range) { + csc_coeff = &csc_coeff_rgb_full_to_rgb_limited; + } + + /* The CSC registers are sequential, alternating MSB then LSB */ + for (i = 0; i < ARRAY_SIZE(csc_coeff_default[0]); i++) { + u16 coeff_a = (*csc_coeff)[0][i]; + u16 coeff_b = (*csc_coeff)[1][i]; + u16 coeff_c = (*csc_coeff)[2][i]; + + hdmi_writeb(hdmi, coeff_a & 0xff, HDMI_CSC_COEF_A1_LSB + i * 2); + hdmi_writeb(hdmi, coeff_a >> 8, HDMI_CSC_COEF_A1_MSB + i * 2); + hdmi_writeb(hdmi, coeff_b & 0xff, HDMI_CSC_COEF_B1_LSB + i * 2); + hdmi_writeb(hdmi, coeff_b >> 8, HDMI_CSC_COEF_B1_MSB + i * 2); + hdmi_writeb(hdmi, coeff_c & 0xff, HDMI_CSC_COEF_C1_LSB + i * 2); + hdmi_writeb(hdmi, coeff_c >> 8, HDMI_CSC_COEF_C1_MSB + i * 2); + } + + hdmi_modb(hdmi, csc_scale, HDMI_CSC_SCALE_CSCSCALE_MASK, + HDMI_CSC_SCALE); +} + +static void hdmi_video_csc(struct dw_hdmi *hdmi) +{ + int color_depth = 0; + int interpolation = HDMI_CSC_CFG_INTMODE_DISABLE; + int decimation = 0; + + /* YCC422 interpolation to 444 mode */ + if (is_color_space_interpolation(hdmi)) + interpolation = HDMI_CSC_CFG_INTMODE_CHROMA_INT_FORMULA1; + else if (is_color_space_decimation(hdmi)) + decimation = HDMI_CSC_CFG_DECMODE_CHROMA_INT_FORMULA3; + + switch (hdmi_bus_fmt_color_depth(hdmi->hdmi_data.enc_out_bus_format)) { + case 8: + color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_24BPP; + break; + case 10: + color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_30BPP; + break; + case 12: + color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_36BPP; + break; + case 16: + color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_48BPP; + break; + + default: + return; + } + + /* Configure the CSC registers */ + hdmi_writeb(hdmi, interpolation | decimation, HDMI_CSC_CFG); + hdmi_modb(hdmi, color_depth, HDMI_CSC_SCALE_CSC_COLORDE_PTH_MASK, + HDMI_CSC_SCALE); + + dw_hdmi_update_csc_coeffs(hdmi); +} + +/* + * HDMI video packetizer is used to packetize the data. + * for example, if input is YCC422 mode or repeater is used, + * data should be repacked this module can be bypassed. + */ +static void hdmi_video_packetize(struct dw_hdmi *hdmi) +{ + unsigned int color_depth = 0; + unsigned int remap_size = HDMI_VP_REMAP_YCC422_16bit; + unsigned int output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_PP; + struct hdmi_data_info *hdmi_data = &hdmi->hdmi_data; + u8 val, vp_conf; + u8 clear_gcp_auto = 0; + + + if (hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_out_bus_format) || + hdmi_bus_fmt_is_yuv444(hdmi->hdmi_data.enc_out_bus_format) || + hdmi_bus_fmt_is_yuv420(hdmi->hdmi_data.enc_out_bus_format)) { + switch (hdmi_bus_fmt_color_depth( + hdmi->hdmi_data.enc_out_bus_format)) { + case 8: + color_depth = 4; + output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS; + clear_gcp_auto = 1; + break; + case 10: + color_depth = 5; + break; + case 12: + color_depth = 6; + break; + case 16: + color_depth = 7; + break; + default: + output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS; + } + } else if (hdmi_bus_fmt_is_yuv422(hdmi->hdmi_data.enc_out_bus_format)) { + switch (hdmi_bus_fmt_color_depth( + hdmi->hdmi_data.enc_out_bus_format)) { + case 0: + case 8: + remap_size = HDMI_VP_REMAP_YCC422_16bit; + clear_gcp_auto = 1; + break; + case 10: + remap_size = HDMI_VP_REMAP_YCC422_20bit; + break; + case 12: + remap_size = HDMI_VP_REMAP_YCC422_24bit; + break; + + default: + return; + } + output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_YCC422; + } else { + return; + } + + /* set the packetizer registers */ + val = ((color_depth << HDMI_VP_PR_CD_COLOR_DEPTH_OFFSET) & + HDMI_VP_PR_CD_COLOR_DEPTH_MASK) | + ((hdmi_data->pix_repet_factor << + HDMI_VP_PR_CD_DESIRED_PR_FACTOR_OFFSET) & + HDMI_VP_PR_CD_DESIRED_PR_FACTOR_MASK); + hdmi_writeb(hdmi, val, HDMI_VP_PR_CD); + + /* HDMI1.4b specification section 6.5.3: + * Source shall only send GCPs with non-zero CD to sinks + * that indicate support for Deep Color. + * GCP only transmit CD and do not handle AVMUTE, PP norDefault_Phase (yet). + * Disable Auto GCP when 24-bit color for sinks that not support Deep Color. + */ + val = hdmi_readb(hdmi, HDMI_FC_DATAUTO3); + if (clear_gcp_auto == 1) + val &= ~HDMI_FC_DATAUTO3_GCP_AUTO; + else + val |= HDMI_FC_DATAUTO3_GCP_AUTO; + hdmi_writeb(hdmi, val, HDMI_FC_DATAUTO3); + + hdmi_modb(hdmi, HDMI_VP_STUFF_PR_STUFFING_STUFFING_MODE, + HDMI_VP_STUFF_PR_STUFFING_MASK, HDMI_VP_STUFF); + + /* Data from pixel repeater block */ + if (hdmi_data->pix_repet_factor > 1) { + vp_conf = HDMI_VP_CONF_PR_EN_ENABLE | + HDMI_VP_CONF_BYPASS_SELECT_PIX_REPEATER; + } else { /* data from packetizer block */ + vp_conf = HDMI_VP_CONF_PR_EN_DISABLE | + HDMI_VP_CONF_BYPASS_SELECT_VID_PACKETIZER; + } + + hdmi_modb(hdmi, vp_conf, + HDMI_VP_CONF_PR_EN_MASK | + HDMI_VP_CONF_BYPASS_SELECT_MASK, HDMI_VP_CONF); + + hdmi_modb(hdmi, 1 << HDMI_VP_STUFF_IDEFAULT_PHASE_OFFSET, + HDMI_VP_STUFF_IDEFAULT_PHASE_MASK, HDMI_VP_STUFF); + + hdmi_writeb(hdmi, remap_size, HDMI_VP_REMAP); + + if (output_select == HDMI_VP_CONF_OUTPUT_SELECTOR_PP) { + vp_conf = HDMI_VP_CONF_BYPASS_EN_DISABLE | + HDMI_VP_CONF_PP_EN_ENABLE | + HDMI_VP_CONF_YCC422_EN_DISABLE; + } else if (output_select == HDMI_VP_CONF_OUTPUT_SELECTOR_YCC422) { + vp_conf = HDMI_VP_CONF_BYPASS_EN_DISABLE | + HDMI_VP_CONF_PP_EN_DISABLE | + HDMI_VP_CONF_YCC422_EN_ENABLE; + } else if (output_select == HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS) { + vp_conf = HDMI_VP_CONF_BYPASS_EN_ENABLE | + HDMI_VP_CONF_PP_EN_DISABLE | + HDMI_VP_CONF_YCC422_EN_DISABLE; + } else { + return; + } + + hdmi_modb(hdmi, vp_conf, + HDMI_VP_CONF_BYPASS_EN_MASK | HDMI_VP_CONF_PP_EN_ENMASK | + HDMI_VP_CONF_YCC422_EN_MASK, HDMI_VP_CONF); + + hdmi_modb(hdmi, HDMI_VP_STUFF_PP_STUFFING_STUFFING_MODE | + HDMI_VP_STUFF_YCC422_STUFFING_STUFFING_MODE, + HDMI_VP_STUFF_PP_STUFFING_MASK | + HDMI_VP_STUFF_YCC422_STUFFING_MASK, HDMI_VP_STUFF); + + hdmi_modb(hdmi, output_select, HDMI_VP_CONF_OUTPUT_SELECTOR_MASK, + HDMI_VP_CONF); +} + +/* ----------------------------------------------------------------------------- + * Synopsys PHY Handling + */ + +static inline void hdmi_phy_test_clear(struct dw_hdmi *hdmi, + unsigned char bit) +{ + hdmi_modb(hdmi, bit << HDMI_PHY_TST0_TSTCLR_OFFSET, + HDMI_PHY_TST0_TSTCLR_MASK, HDMI_PHY_TST0); +} + +static bool hdmi_phy_wait_i2c_done(struct dw_hdmi *hdmi, int msec) +{ + u32 val; + + while ((val = hdmi_readb(hdmi, HDMI_IH_I2CMPHY_STAT0) & 0x3) == 0) { + if (msec-- == 0) + return false; + udelay(1000); + } + hdmi_writeb(hdmi, val, HDMI_IH_I2CMPHY_STAT0); + + return true; +} + +void dw_hdmi_phy_i2c_write(struct dw_hdmi *hdmi, unsigned short data, + unsigned char addr) +{ + hdmi_writeb(hdmi, 0xFF, HDMI_IH_I2CMPHY_STAT0); + hdmi_writeb(hdmi, addr, HDMI_PHY_I2CM_ADDRESS_ADDR); + hdmi_writeb(hdmi, (unsigned char)(data >> 8), + HDMI_PHY_I2CM_DATAO_1_ADDR); + hdmi_writeb(hdmi, (unsigned char)(data >> 0), + HDMI_PHY_I2CM_DATAO_0_ADDR); + hdmi_writeb(hdmi, HDMI_PHY_I2CM_OPERATION_ADDR_WRITE, + HDMI_PHY_I2CM_OPERATION_ADDR); + hdmi_phy_wait_i2c_done(hdmi, 1000); +} +EXPORT_SYMBOL_GPL(dw_hdmi_phy_i2c_write); + +/* Filter out invalid setups to avoid configuring SCDC and scrambling */ +static bool dw_hdmi_support_scdc(struct dw_hdmi *hdmi, + const struct drm_display_info *display) +{ + /* Completely disable SCDC support for older controllers */ + if (hdmi->version < 0x200a) + return false; + + /* Disable if no DDC bus */ + if (!hdmi->ddc) + return false; + + /* Disable if SCDC is not supported, or if an HF-VSDB block is absent */ + if (!display->hdmi.scdc.supported || + !display->hdmi.scdc.scrambling.supported) + return false; + + /* + * Disable if display only support low TMDS rates and scrambling + * for low rates is not supported either + */ + if (!display->hdmi.scdc.scrambling.low_rates && + display->max_tmds_clock <= 340000) + return false; + + return true; +} + +/* + * HDMI2.0 Specifies the following procedure for High TMDS Bit Rates: + * - The Source shall suspend transmission of the TMDS clock and data + * - The Source shall write to the TMDS_Bit_Clock_Ratio bit to change it + * from a 0 to a 1 or from a 1 to a 0 + * - The Source shall allow a minimum of 1 ms and a maximum of 100 ms from + * the time the TMDS_Bit_Clock_Ratio bit is written until resuming + * transmission of TMDS clock and data + * + * To respect the 100ms maximum delay, the dw_hdmi_set_high_tmds_clock_ratio() + * helper should called right before enabling the TMDS Clock and Data in + * the PHY configuration callback. + */ +void dw_hdmi_set_high_tmds_clock_ratio(struct dw_hdmi *hdmi, + const struct drm_display_info *display) +{ + unsigned long mtmdsclock = hdmi->hdmi_data.video_mode.mtmdsclock; + + /* Control for TMDS Bit Period/TMDS Clock-Period Ratio */ + if (dw_hdmi_support_scdc(hdmi, display)) { + if (mtmdsclock > HDMI14_MAX_TMDSCLK) + drm_scdc_set_high_tmds_clock_ratio(hdmi->ddc, 1); + else + drm_scdc_set_high_tmds_clock_ratio(hdmi->ddc, 0); + } +} +EXPORT_SYMBOL_GPL(dw_hdmi_set_high_tmds_clock_ratio); + +static void dw_hdmi_phy_enable_powerdown(struct dw_hdmi *hdmi, bool enable) +{ + hdmi_mask_writeb(hdmi, !enable, HDMI_PHY_CONF0, + HDMI_PHY_CONF0_PDZ_OFFSET, + HDMI_PHY_CONF0_PDZ_MASK); +} + +static void dw_hdmi_phy_enable_tmds(struct dw_hdmi *hdmi, u8 enable) +{ + hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0, + HDMI_PHY_CONF0_ENTMDS_OFFSET, + HDMI_PHY_CONF0_ENTMDS_MASK); +} + +static void dw_hdmi_phy_enable_svsret(struct dw_hdmi *hdmi, u8 enable) +{ + hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0, + HDMI_PHY_CONF0_SVSRET_OFFSET, + HDMI_PHY_CONF0_SVSRET_MASK); +} + +void dw_hdmi_phy_gen2_pddq(struct dw_hdmi *hdmi, u8 enable) +{ + hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0, + HDMI_PHY_CONF0_GEN2_PDDQ_OFFSET, + HDMI_PHY_CONF0_GEN2_PDDQ_MASK); +} +EXPORT_SYMBOL_GPL(dw_hdmi_phy_gen2_pddq); + +void dw_hdmi_phy_gen2_txpwron(struct dw_hdmi *hdmi, u8 enable) +{ + hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0, + HDMI_PHY_CONF0_GEN2_TXPWRON_OFFSET, + HDMI_PHY_CONF0_GEN2_TXPWRON_MASK); +} +EXPORT_SYMBOL_GPL(dw_hdmi_phy_gen2_txpwron); + +static void dw_hdmi_phy_sel_data_en_pol(struct dw_hdmi *hdmi, u8 enable) +{ + hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0, + HDMI_PHY_CONF0_SELDATAENPOL_OFFSET, + HDMI_PHY_CONF0_SELDATAENPOL_MASK); +} + +static void dw_hdmi_phy_sel_interface_control(struct dw_hdmi *hdmi, u8 enable) +{ + hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0, + HDMI_PHY_CONF0_SELDIPIF_OFFSET, + HDMI_PHY_CONF0_SELDIPIF_MASK); +} + +void dw_hdmi_phy_gen1_reset(struct dw_hdmi *hdmi) +{ + /* PHY reset. The reset signal is active low on Gen1 PHYs. */ + hdmi_writeb(hdmi, 0, HDMI_MC_PHYRSTZ); + hdmi_writeb(hdmi, HDMI_MC_PHYRSTZ_PHYRSTZ, HDMI_MC_PHYRSTZ); +} +EXPORT_SYMBOL_GPL(dw_hdmi_phy_gen1_reset); + +void dw_hdmi_phy_gen2_reset(struct dw_hdmi *hdmi) +{ + /* PHY reset. The reset signal is active high on Gen2 PHYs. */ + hdmi_writeb(hdmi, HDMI_MC_PHYRSTZ_PHYRSTZ, HDMI_MC_PHYRSTZ); + hdmi_writeb(hdmi, 0, HDMI_MC_PHYRSTZ); +} +EXPORT_SYMBOL_GPL(dw_hdmi_phy_gen2_reset); + +void dw_hdmi_phy_i2c_set_addr(struct dw_hdmi *hdmi, u8 address) +{ + hdmi_phy_test_clear(hdmi, 1); + hdmi_writeb(hdmi, address, HDMI_PHY_I2CM_SLAVE_ADDR); + hdmi_phy_test_clear(hdmi, 0); +} +EXPORT_SYMBOL_GPL(dw_hdmi_phy_i2c_set_addr); + +static void dw_hdmi_phy_power_off(struct dw_hdmi *hdmi) +{ + const struct dw_hdmi_phy_data *phy = hdmi->phy.data; + unsigned int i; + u16 val; + + if (phy->gen == 1) { + dw_hdmi_phy_enable_tmds(hdmi, 0); + dw_hdmi_phy_enable_powerdown(hdmi, true); + return; + } + + dw_hdmi_phy_gen2_txpwron(hdmi, 0); + + /* + * Wait for TX_PHY_LOCK to be deasserted to indicate that the PHY went + * to low power mode. + */ + for (i = 0; i < 5; ++i) { + val = hdmi_readb(hdmi, HDMI_PHY_STAT0); + if (!(val & HDMI_PHY_TX_PHY_LOCK)) + break; + + usleep_range(1000, 2000); + } + + if (val & HDMI_PHY_TX_PHY_LOCK) + dev_warn(hdmi->dev, "PHY failed to power down\n"); + else + dev_dbg(hdmi->dev, "PHY powered down in %u iterations\n", i); + + dw_hdmi_phy_gen2_pddq(hdmi, 1); +} + +static int dw_hdmi_phy_power_on(struct dw_hdmi *hdmi) +{ + const struct dw_hdmi_phy_data *phy = hdmi->phy.data; + unsigned int i; + u8 val; + + if (phy->gen == 1) { + dw_hdmi_phy_enable_powerdown(hdmi, false); + + /* Toggle TMDS enable. */ + dw_hdmi_phy_enable_tmds(hdmi, 0); + dw_hdmi_phy_enable_tmds(hdmi, 1); + return 0; + } + + dw_hdmi_phy_gen2_txpwron(hdmi, 1); + dw_hdmi_phy_gen2_pddq(hdmi, 0); + + /* Wait for PHY PLL lock */ + for (i = 0; i < 5; ++i) { + val = hdmi_readb(hdmi, HDMI_PHY_STAT0) & HDMI_PHY_TX_PHY_LOCK; + if (val) + break; + + usleep_range(1000, 2000); + } + + if (!val) { + dev_err(hdmi->dev, "PHY PLL failed to lock\n"); + return -ETIMEDOUT; + } + + dev_dbg(hdmi->dev, "PHY PLL locked %u iterations\n", i); + return 0; +} + +/* + * PHY configuration function for the DWC HDMI 3D TX PHY. Based on the available + * information the DWC MHL PHY has the same register layout and is thus also + * supported by this function. + */ +static int hdmi_phy_configure_dwc_hdmi_3d_tx(struct dw_hdmi *hdmi, + const struct dw_hdmi_plat_data *pdata, + unsigned long mpixelclock) +{ + const struct dw_hdmi_mpll_config *mpll_config = pdata->mpll_cfg; + const struct dw_hdmi_curr_ctrl *curr_ctrl = pdata->cur_ctr; + const struct dw_hdmi_phy_config *phy_config = pdata->phy_config; + + /* TOFIX Will need 420 specific PHY configuration tables */ + + /* PLL/MPLL Cfg - always match on final entry */ + for (; mpll_config->mpixelclock != ~0UL; mpll_config++) + if (mpixelclock <= mpll_config->mpixelclock) + break; + + for (; curr_ctrl->mpixelclock != ~0UL; curr_ctrl++) + if (mpixelclock <= curr_ctrl->mpixelclock) + break; + + for (; phy_config->mpixelclock != ~0UL; phy_config++) + if (mpixelclock <= phy_config->mpixelclock) + break; + + if (mpll_config->mpixelclock == ~0UL || + curr_ctrl->mpixelclock == ~0UL || + phy_config->mpixelclock == ~0UL) + return -EINVAL; + + dw_hdmi_phy_i2c_write(hdmi, mpll_config->res[0].cpce, + HDMI_3D_TX_PHY_CPCE_CTRL); + dw_hdmi_phy_i2c_write(hdmi, mpll_config->res[0].gmp, + HDMI_3D_TX_PHY_GMPCTRL); + dw_hdmi_phy_i2c_write(hdmi, curr_ctrl->curr[0], + HDMI_3D_TX_PHY_CURRCTRL); + + dw_hdmi_phy_i2c_write(hdmi, 0, HDMI_3D_TX_PHY_PLLPHBYCTRL); + dw_hdmi_phy_i2c_write(hdmi, HDMI_3D_TX_PHY_MSM_CTRL_CKO_SEL_FB_CLK, + HDMI_3D_TX_PHY_MSM_CTRL); + + dw_hdmi_phy_i2c_write(hdmi, phy_config->term, HDMI_3D_TX_PHY_TXTERM); + dw_hdmi_phy_i2c_write(hdmi, phy_config->sym_ctr, + HDMI_3D_TX_PHY_CKSYMTXCTRL); + dw_hdmi_phy_i2c_write(hdmi, phy_config->vlev_ctr, + HDMI_3D_TX_PHY_VLEVCTRL); + + /* Override and disable clock termination. */ + dw_hdmi_phy_i2c_write(hdmi, HDMI_3D_TX_PHY_CKCALCTRL_OVERRIDE, + HDMI_3D_TX_PHY_CKCALCTRL); + + return 0; +} + +static int hdmi_phy_configure(struct dw_hdmi *hdmi, + const struct drm_display_info *display) +{ + const struct dw_hdmi_phy_data *phy = hdmi->phy.data; + const struct dw_hdmi_plat_data *pdata = hdmi->plat_data; + unsigned long mpixelclock = hdmi->hdmi_data.video_mode.mpixelclock; + unsigned long mtmdsclock = hdmi->hdmi_data.video_mode.mtmdsclock; + int ret; + + dw_hdmi_phy_power_off(hdmi); + + dw_hdmi_set_high_tmds_clock_ratio(hdmi, display); + + /* Leave low power consumption mode by asserting SVSRET. */ + if (phy->has_svsret) + dw_hdmi_phy_enable_svsret(hdmi, 1); + + dw_hdmi_phy_gen2_reset(hdmi); + + hdmi_writeb(hdmi, HDMI_MC_HEACPHY_RST_ASSERT, HDMI_MC_HEACPHY_RST); + + dw_hdmi_phy_i2c_set_addr(hdmi, HDMI_PHY_I2CM_SLAVE_ADDR_PHY_GEN2); + + /* Write to the PHY as configured by the platform */ + if (pdata->configure_phy) + ret = pdata->configure_phy(hdmi, pdata->priv_data, mpixelclock); + else + ret = phy->configure(hdmi, pdata, mpixelclock); + if (ret) { + dev_err(hdmi->dev, "PHY configuration failed (clock %lu)\n", + mpixelclock); + return ret; + } + + /* Wait for resuming transmission of TMDS clock and data */ + if (mtmdsclock > HDMI14_MAX_TMDSCLK) + msleep(100); + + return dw_hdmi_phy_power_on(hdmi); +} + +static int dw_hdmi_phy_init(struct dw_hdmi *hdmi, void *data, + const struct drm_display_info *display, + const struct drm_display_mode *mode) +{ + int i, ret; + + /* HDMI Phy spec says to do the phy initialization sequence twice */ + for (i = 0; i < 2; i++) { + dw_hdmi_phy_sel_data_en_pol(hdmi, 1); + dw_hdmi_phy_sel_interface_control(hdmi, 0); + + ret = hdmi_phy_configure(hdmi, display); + if (ret) + return ret; + } + + return 0; +} + +static void dw_hdmi_phy_disable(struct dw_hdmi *hdmi, void *data) +{ + dw_hdmi_phy_power_off(hdmi); +} + +enum drm_connector_status dw_hdmi_phy_read_hpd(struct dw_hdmi *hdmi, + void *data) +{ + return hdmi_readb(hdmi, HDMI_PHY_STAT0) & HDMI_PHY_HPD ? + connector_status_connected : connector_status_disconnected; +} +EXPORT_SYMBOL_GPL(dw_hdmi_phy_read_hpd); + +void dw_hdmi_phy_update_hpd(struct dw_hdmi *hdmi, void *data, + bool force, bool disabled, bool rxsense) +{ + u8 old_mask = hdmi->phy_mask; + + if (force || disabled || !rxsense) + hdmi->phy_mask |= HDMI_PHY_RX_SENSE; + else + hdmi->phy_mask &= ~HDMI_PHY_RX_SENSE; + + if (old_mask != hdmi->phy_mask) + hdmi_writeb(hdmi, hdmi->phy_mask, HDMI_PHY_MASK0); +} +EXPORT_SYMBOL_GPL(dw_hdmi_phy_update_hpd); + +void dw_hdmi_phy_setup_hpd(struct dw_hdmi *hdmi, void *data) +{ + /* + * Configure the PHY RX SENSE and HPD interrupts polarities and clear + * any pending interrupt. + */ + hdmi_writeb(hdmi, HDMI_PHY_HPD | HDMI_PHY_RX_SENSE, HDMI_PHY_POL0); + hdmi_writeb(hdmi, HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE, + HDMI_IH_PHY_STAT0); + + /* Enable cable hot plug irq. */ + hdmi_writeb(hdmi, hdmi->phy_mask, HDMI_PHY_MASK0); + + /* Clear and unmute interrupts. */ + hdmi_writeb(hdmi, HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE, + HDMI_IH_PHY_STAT0); + hdmi_writeb(hdmi, ~(HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE), + HDMI_IH_MUTE_PHY_STAT0); +} +EXPORT_SYMBOL_GPL(dw_hdmi_phy_setup_hpd); + +static const struct dw_hdmi_phy_ops dw_hdmi_synopsys_phy_ops = { + .init = dw_hdmi_phy_init, + .disable = dw_hdmi_phy_disable, + .read_hpd = dw_hdmi_phy_read_hpd, + .update_hpd = dw_hdmi_phy_update_hpd, + .setup_hpd = dw_hdmi_phy_setup_hpd, +}; + +/* ----------------------------------------------------------------------------- + * HDMI TX Setup + */ + +static void hdmi_tx_hdcp_config(struct dw_hdmi *hdmi) +{ + u8 de; + + if (hdmi->hdmi_data.video_mode.mdataenablepolarity) + de = HDMI_A_VIDPOLCFG_DATAENPOL_ACTIVE_HIGH; + else + de = HDMI_A_VIDPOLCFG_DATAENPOL_ACTIVE_LOW; + + /* disable rx detect */ + hdmi_modb(hdmi, HDMI_A_HDCPCFG0_RXDETECT_DISABLE, + HDMI_A_HDCPCFG0_RXDETECT_MASK, HDMI_A_HDCPCFG0); + + hdmi_modb(hdmi, de, HDMI_A_VIDPOLCFG_DATAENPOL_MASK, HDMI_A_VIDPOLCFG); + + hdmi_modb(hdmi, HDMI_A_HDCPCFG1_ENCRYPTIONDISABLE_DISABLE, + HDMI_A_HDCPCFG1_ENCRYPTIONDISABLE_MASK, HDMI_A_HDCPCFG1); +} + +static void hdmi_config_AVI(struct dw_hdmi *hdmi, + const struct drm_connector *connector, + const struct drm_display_mode *mode) +{ + struct hdmi_avi_infoframe frame; + u8 val; + + /* Initialise info frame from DRM mode */ + drm_hdmi_avi_infoframe_from_display_mode(&frame, connector, mode); + + if (hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_out_bus_format)) { + drm_hdmi_avi_infoframe_quant_range(&frame, connector, mode, + hdmi->hdmi_data.rgb_limited_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; + } + + if (hdmi_bus_fmt_is_yuv444(hdmi->hdmi_data.enc_out_bus_format)) + frame.colorspace = HDMI_COLORSPACE_YUV444; + else if (hdmi_bus_fmt_is_yuv422(hdmi->hdmi_data.enc_out_bus_format)) + frame.colorspace = HDMI_COLORSPACE_YUV422; + else if (hdmi_bus_fmt_is_yuv420(hdmi->hdmi_data.enc_out_bus_format)) + frame.colorspace = HDMI_COLORSPACE_YUV420; + else + frame.colorspace = HDMI_COLORSPACE_RGB; + + /* Set up colorimetry */ + if (!hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_out_bus_format)) { + switch (hdmi->hdmi_data.enc_out_encoding) { + case V4L2_YCBCR_ENC_601: + if (hdmi->hdmi_data.enc_in_encoding == V4L2_YCBCR_ENC_XV601) + frame.colorimetry = HDMI_COLORIMETRY_EXTENDED; + else + frame.colorimetry = HDMI_COLORIMETRY_ITU_601; + frame.extended_colorimetry = + HDMI_EXTENDED_COLORIMETRY_XV_YCC_601; + break; + case V4L2_YCBCR_ENC_709: + if (hdmi->hdmi_data.enc_in_encoding == V4L2_YCBCR_ENC_XV709) + frame.colorimetry = HDMI_COLORIMETRY_EXTENDED; + else + frame.colorimetry = HDMI_COLORIMETRY_ITU_709; + frame.extended_colorimetry = + HDMI_EXTENDED_COLORIMETRY_XV_YCC_709; + break; + default: /* Carries no data */ + frame.colorimetry = HDMI_COLORIMETRY_ITU_601; + frame.extended_colorimetry = + HDMI_EXTENDED_COLORIMETRY_XV_YCC_601; + break; + } + } else { + frame.colorimetry = HDMI_COLORIMETRY_NONE; + frame.extended_colorimetry = + HDMI_EXTENDED_COLORIMETRY_XV_YCC_601; + } + + /* + * The Designware IP uses a different byte format from standard + * AVI info frames, though generally the bits are in the correct + * bytes. + */ + + /* + * AVI data byte 1 differences: Colorspace in bits 0,1 rather than 5,6, + * scan info in bits 4,5 rather than 0,1 and active aspect present in + * bit 6 rather than 4. + */ + val = (frame.scan_mode & 3) << 4 | (frame.colorspace & 3); + if (frame.active_aspect & 15) + val |= HDMI_FC_AVICONF0_ACTIVE_FMT_INFO_PRESENT; + if (frame.top_bar || frame.bottom_bar) + val |= HDMI_FC_AVICONF0_BAR_DATA_HORIZ_BAR; + if (frame.left_bar || frame.right_bar) + val |= HDMI_FC_AVICONF0_BAR_DATA_VERT_BAR; + hdmi_writeb(hdmi, val, HDMI_FC_AVICONF0); + + /* AVI data byte 2 differences: none */ + val = ((frame.colorimetry & 0x3) << 6) | + ((frame.picture_aspect & 0x3) << 4) | + (frame.active_aspect & 0xf); + hdmi_writeb(hdmi, val, HDMI_FC_AVICONF1); + + /* AVI data byte 3 differences: none */ + val = ((frame.extended_colorimetry & 0x7) << 4) | + ((frame.quantization_range & 0x3) << 2) | + (frame.nups & 0x3); + if (frame.itc) + val |= HDMI_FC_AVICONF2_IT_CONTENT_VALID; + hdmi_writeb(hdmi, val, HDMI_FC_AVICONF2); + + /* AVI data byte 4 differences: none */ + val = frame.video_code & 0x7f; + hdmi_writeb(hdmi, val, HDMI_FC_AVIVID); + + /* AVI Data Byte 5- set up input and output pixel repetition */ + val = (((hdmi->hdmi_data.video_mode.mpixelrepetitioninput + 1) << + HDMI_FC_PRCONF_INCOMING_PR_FACTOR_OFFSET) & + HDMI_FC_PRCONF_INCOMING_PR_FACTOR_MASK) | + ((hdmi->hdmi_data.video_mode.mpixelrepetitionoutput << + HDMI_FC_PRCONF_OUTPUT_PR_FACTOR_OFFSET) & + HDMI_FC_PRCONF_OUTPUT_PR_FACTOR_MASK); + hdmi_writeb(hdmi, val, HDMI_FC_PRCONF); + + /* + * AVI data byte 5 differences: content type in 0,1 rather than 4,5, + * ycc range in bits 2,3 rather than 6,7 + */ + val = ((frame.ycc_quantization_range & 0x3) << 2) | + (frame.content_type & 0x3); + hdmi_writeb(hdmi, val, HDMI_FC_AVICONF3); + + /* AVI Data Bytes 6-13 */ + hdmi_writeb(hdmi, frame.top_bar & 0xff, HDMI_FC_AVIETB0); + hdmi_writeb(hdmi, (frame.top_bar >> 8) & 0xff, HDMI_FC_AVIETB1); + hdmi_writeb(hdmi, frame.bottom_bar & 0xff, HDMI_FC_AVISBB0); + hdmi_writeb(hdmi, (frame.bottom_bar >> 8) & 0xff, HDMI_FC_AVISBB1); + hdmi_writeb(hdmi, frame.left_bar & 0xff, HDMI_FC_AVIELB0); + hdmi_writeb(hdmi, (frame.left_bar >> 8) & 0xff, HDMI_FC_AVIELB1); + hdmi_writeb(hdmi, frame.right_bar & 0xff, HDMI_FC_AVISRB0); + hdmi_writeb(hdmi, (frame.right_bar >> 8) & 0xff, HDMI_FC_AVISRB1); +} + +static void hdmi_config_vendor_specific_infoframe(struct dw_hdmi *hdmi, + const struct drm_connector *connector, + const struct drm_display_mode *mode) +{ + struct hdmi_vendor_infoframe frame; + u8 buffer[10]; + ssize_t err; + + err = drm_hdmi_vendor_infoframe_from_display_mode(&frame, connector, + mode); + if (err < 0) + /* + * Going into that statement does not means vendor infoframe + * fails. It just informed us that vendor infoframe is not + * needed for the selected mode. Only 4k or stereoscopic 3D + * mode requires vendor infoframe. So just simply return. + */ + return; + + err = hdmi_vendor_infoframe_pack(&frame, buffer, sizeof(buffer)); + if (err < 0) { + dev_err(hdmi->dev, "Failed to pack vendor infoframe: %zd\n", + err); + return; + } + hdmi_mask_writeb(hdmi, 0, HDMI_FC_DATAUTO0, HDMI_FC_DATAUTO0_VSD_OFFSET, + HDMI_FC_DATAUTO0_VSD_MASK); + + /* Set the length of HDMI vendor specific InfoFrame payload */ + hdmi_writeb(hdmi, buffer[2], HDMI_FC_VSDSIZE); + + /* Set 24bit IEEE Registration Identifier */ + hdmi_writeb(hdmi, buffer[4], HDMI_FC_VSDIEEEID0); + hdmi_writeb(hdmi, buffer[5], HDMI_FC_VSDIEEEID1); + hdmi_writeb(hdmi, buffer[6], HDMI_FC_VSDIEEEID2); + + /* Set HDMI_Video_Format and HDMI_VIC/3D_Structure */ + hdmi_writeb(hdmi, buffer[7], HDMI_FC_VSDPAYLOAD0); + hdmi_writeb(hdmi, buffer[8], HDMI_FC_VSDPAYLOAD1); + + if (frame.s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF) + hdmi_writeb(hdmi, buffer[9], HDMI_FC_VSDPAYLOAD2); + + /* Packet frame interpolation */ + hdmi_writeb(hdmi, 1, HDMI_FC_DATAUTO1); + + /* Auto packets per frame and line spacing */ + hdmi_writeb(hdmi, 0x11, HDMI_FC_DATAUTO2); + + /* Configures the Frame Composer On RDRB mode */ + hdmi_mask_writeb(hdmi, 1, HDMI_FC_DATAUTO0, HDMI_FC_DATAUTO0_VSD_OFFSET, + HDMI_FC_DATAUTO0_VSD_MASK); +} + +static void hdmi_config_drm_infoframe(struct dw_hdmi *hdmi, + const struct drm_connector *connector) +{ + const struct drm_connector_state *conn_state = connector->state; + struct hdmi_drm_infoframe frame; + u8 buffer[30]; + ssize_t err; + int i; + + if (!hdmi->plat_data->use_drm_infoframe) + return; + + hdmi_modb(hdmi, HDMI_FC_PACKET_TX_EN_DRM_DISABLE, + HDMI_FC_PACKET_TX_EN_DRM_MASK, HDMI_FC_PACKET_TX_EN); + + err = drm_hdmi_infoframe_set_hdr_metadata(&frame, conn_state); + if (err < 0) + return; + + err = hdmi_drm_infoframe_pack(&frame, buffer, sizeof(buffer)); + if (err < 0) { + dev_err(hdmi->dev, "Failed to pack drm infoframe: %zd\n", err); + return; + } + + hdmi_writeb(hdmi, frame.version, HDMI_FC_DRM_HB0); + hdmi_writeb(hdmi, frame.length, HDMI_FC_DRM_HB1); + + for (i = 0; i < frame.length; i++) + hdmi_writeb(hdmi, buffer[4 + i], HDMI_FC_DRM_PB0 + i); + + hdmi_writeb(hdmi, 1, HDMI_FC_DRM_UP); + hdmi_modb(hdmi, HDMI_FC_PACKET_TX_EN_DRM_ENABLE, + HDMI_FC_PACKET_TX_EN_DRM_MASK, HDMI_FC_PACKET_TX_EN); +} + +static void hdmi_av_composer(struct dw_hdmi *hdmi, + const struct drm_display_info *display, + const struct drm_display_mode *mode) +{ + u8 inv_val, bytes; + const struct drm_hdmi_info *hdmi_info = &display->hdmi; + struct hdmi_vmode *vmode = &hdmi->hdmi_data.video_mode; + int hblank, vblank, h_de_hs, v_de_vs, hsync_len, vsync_len; + unsigned int vdisplay, hdisplay; + + vmode->mpixelclock = mode->clock * 1000; + + dev_dbg(hdmi->dev, "final pixclk = %d\n", vmode->mpixelclock); + + vmode->mtmdsclock = vmode->mpixelclock; + + if (!hdmi_bus_fmt_is_yuv422(hdmi->hdmi_data.enc_out_bus_format)) { + switch (hdmi_bus_fmt_color_depth( + hdmi->hdmi_data.enc_out_bus_format)) { + case 16: + vmode->mtmdsclock = vmode->mpixelclock * 2; + break; + case 12: + vmode->mtmdsclock = vmode->mpixelclock * 3 / 2; + break; + case 10: + vmode->mtmdsclock = vmode->mpixelclock * 5 / 4; + break; + } + } + + if (hdmi_bus_fmt_is_yuv420(hdmi->hdmi_data.enc_out_bus_format)) + vmode->mtmdsclock /= 2; + + dev_dbg(hdmi->dev, "final tmdsclock = %d\n", vmode->mtmdsclock); + + /* Set up HDMI_FC_INVIDCONF */ + inv_val = (hdmi->hdmi_data.hdcp_enable || + (dw_hdmi_support_scdc(hdmi, display) && + (vmode->mtmdsclock > HDMI14_MAX_TMDSCLK || + hdmi_info->scdc.scrambling.low_rates)) ? + HDMI_FC_INVIDCONF_HDCP_KEEPOUT_ACTIVE : + HDMI_FC_INVIDCONF_HDCP_KEEPOUT_INACTIVE); + + inv_val |= mode->flags & DRM_MODE_FLAG_PVSYNC ? + HDMI_FC_INVIDCONF_VSYNC_IN_POLARITY_ACTIVE_HIGH : + HDMI_FC_INVIDCONF_VSYNC_IN_POLARITY_ACTIVE_LOW; + + inv_val |= mode->flags & DRM_MODE_FLAG_PHSYNC ? + HDMI_FC_INVIDCONF_HSYNC_IN_POLARITY_ACTIVE_HIGH : + HDMI_FC_INVIDCONF_HSYNC_IN_POLARITY_ACTIVE_LOW; + + inv_val |= (vmode->mdataenablepolarity ? + HDMI_FC_INVIDCONF_DE_IN_POLARITY_ACTIVE_HIGH : + HDMI_FC_INVIDCONF_DE_IN_POLARITY_ACTIVE_LOW); + + if (hdmi->vic == 39) + inv_val |= HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_HIGH; + else + inv_val |= mode->flags & DRM_MODE_FLAG_INTERLACE ? + HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_HIGH : + HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_LOW; + + inv_val |= mode->flags & DRM_MODE_FLAG_INTERLACE ? + HDMI_FC_INVIDCONF_IN_I_P_INTERLACED : + HDMI_FC_INVIDCONF_IN_I_P_PROGRESSIVE; + + inv_val |= hdmi->sink_is_hdmi ? + HDMI_FC_INVIDCONF_DVI_MODEZ_HDMI_MODE : + HDMI_FC_INVIDCONF_DVI_MODEZ_DVI_MODE; + + hdmi_writeb(hdmi, inv_val, HDMI_FC_INVIDCONF); + + hdisplay = mode->hdisplay; + hblank = mode->htotal - mode->hdisplay; + h_de_hs = mode->hsync_start - mode->hdisplay; + hsync_len = mode->hsync_end - mode->hsync_start; + + /* + * When we're setting a YCbCr420 mode, we need + * to adjust the horizontal timing to suit. + */ + if (hdmi_bus_fmt_is_yuv420(hdmi->hdmi_data.enc_out_bus_format)) { + hdisplay /= 2; + hblank /= 2; + h_de_hs /= 2; + hsync_len /= 2; + } + + vdisplay = mode->vdisplay; + vblank = mode->vtotal - mode->vdisplay; + v_de_vs = mode->vsync_start - mode->vdisplay; + vsync_len = mode->vsync_end - mode->vsync_start; + + /* + * When we're setting an interlaced mode, we need + * to adjust the vertical timing to suit. + */ + if (mode->flags & DRM_MODE_FLAG_INTERLACE) { + vdisplay /= 2; + vblank /= 2; + v_de_vs /= 2; + vsync_len /= 2; + } + + /* Scrambling Control */ + if (dw_hdmi_support_scdc(hdmi, display)) { + if (vmode->mtmdsclock > HDMI14_MAX_TMDSCLK || + hdmi_info->scdc.scrambling.low_rates) { + /* + * HDMI2.0 Specifies the following procedure: + * After the Source Device has determined that + * SCDC_Present is set (=1), the Source Device should + * write the accurate Version of the Source Device + * to the Source Version field in the SCDCS. + * Source Devices compliant shall set the + * Source Version = 1. + */ + drm_scdc_readb(hdmi->ddc, SCDC_SINK_VERSION, + &bytes); + drm_scdc_writeb(hdmi->ddc, SCDC_SOURCE_VERSION, + min_t(u8, bytes, SCDC_MIN_SOURCE_VERSION)); + + /* Enabled Scrambling in the Sink */ + drm_scdc_set_scrambling(hdmi->ddc, 1); + + /* + * To activate the scrambler feature, you must ensure + * that the quasi-static configuration bit + * fc_invidconf.HDCP_keepout is set at configuration + * time, before the required mc_swrstzreq.tmdsswrst_req + * reset request is issued. + */ + hdmi_writeb(hdmi, (u8)~HDMI_MC_SWRSTZ_TMDSSWRST_REQ, + HDMI_MC_SWRSTZ); + hdmi_writeb(hdmi, 1, HDMI_FC_SCRAMBLER_CTRL); + } else { + hdmi_writeb(hdmi, 0, HDMI_FC_SCRAMBLER_CTRL); + hdmi_writeb(hdmi, (u8)~HDMI_MC_SWRSTZ_TMDSSWRST_REQ, + HDMI_MC_SWRSTZ); + drm_scdc_set_scrambling(hdmi->ddc, 0); + } + } + + /* Set up horizontal active pixel width */ + hdmi_writeb(hdmi, hdisplay >> 8, HDMI_FC_INHACTV1); + hdmi_writeb(hdmi, hdisplay, HDMI_FC_INHACTV0); + + /* Set up vertical active lines */ + hdmi_writeb(hdmi, vdisplay >> 8, HDMI_FC_INVACTV1); + hdmi_writeb(hdmi, vdisplay, HDMI_FC_INVACTV0); + + /* Set up horizontal blanking pixel region width */ + hdmi_writeb(hdmi, hblank >> 8, HDMI_FC_INHBLANK1); + hdmi_writeb(hdmi, hblank, HDMI_FC_INHBLANK0); + + /* Set up vertical blanking pixel region width */ + hdmi_writeb(hdmi, vblank, HDMI_FC_INVBLANK); + + /* Set up HSYNC active edge delay width (in pixel clks) */ + hdmi_writeb(hdmi, h_de_hs >> 8, HDMI_FC_HSYNCINDELAY1); + hdmi_writeb(hdmi, h_de_hs, HDMI_FC_HSYNCINDELAY0); + + /* Set up VSYNC active edge delay (in lines) */ + hdmi_writeb(hdmi, v_de_vs, HDMI_FC_VSYNCINDELAY); + + /* Set up HSYNC active pulse width (in pixel clks) */ + hdmi_writeb(hdmi, hsync_len >> 8, HDMI_FC_HSYNCINWIDTH1); + hdmi_writeb(hdmi, hsync_len, HDMI_FC_HSYNCINWIDTH0); + + /* Set up VSYNC active edge delay (in lines) */ + hdmi_writeb(hdmi, vsync_len, HDMI_FC_VSYNCINWIDTH); +} + +/* HDMI Initialization Step B.4 */ +static void dw_hdmi_enable_video_path(struct dw_hdmi *hdmi) +{ + /* control period minimum duration */ + hdmi_writeb(hdmi, 12, HDMI_FC_CTRLDUR); + hdmi_writeb(hdmi, 32, HDMI_FC_EXCTRLDUR); + hdmi_writeb(hdmi, 1, HDMI_FC_EXCTRLSPAC); + + /* Set to fill TMDS data channels */ + hdmi_writeb(hdmi, 0x0B, HDMI_FC_CH0PREAM); + hdmi_writeb(hdmi, 0x16, HDMI_FC_CH1PREAM); + hdmi_writeb(hdmi, 0x21, HDMI_FC_CH2PREAM); + + /* Enable pixel clock and tmds data path */ + hdmi->mc_clkdis |= HDMI_MC_CLKDIS_HDCPCLK_DISABLE | + HDMI_MC_CLKDIS_CSCCLK_DISABLE | + HDMI_MC_CLKDIS_AUDCLK_DISABLE | + HDMI_MC_CLKDIS_PREPCLK_DISABLE | + HDMI_MC_CLKDIS_TMDSCLK_DISABLE; + hdmi->mc_clkdis &= ~HDMI_MC_CLKDIS_PIXELCLK_DISABLE; + hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS); + + hdmi->mc_clkdis &= ~HDMI_MC_CLKDIS_TMDSCLK_DISABLE; + hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS); + + /* Enable csc path */ + if (is_csc_needed(hdmi)) { + hdmi->mc_clkdis &= ~HDMI_MC_CLKDIS_CSCCLK_DISABLE; + hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS); + + hdmi_writeb(hdmi, HDMI_MC_FLOWCTRL_FEED_THROUGH_OFF_CSC_IN_PATH, + HDMI_MC_FLOWCTRL); + } else { + hdmi->mc_clkdis |= HDMI_MC_CLKDIS_CSCCLK_DISABLE; + hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS); + + hdmi_writeb(hdmi, HDMI_MC_FLOWCTRL_FEED_THROUGH_OFF_CSC_BYPASS, + HDMI_MC_FLOWCTRL); + } +} + +/* Workaround to clear the overflow condition */ +static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi) +{ + unsigned int count; + unsigned int i; + u8 val; + + /* + * Under some circumstances the Frame Composer arithmetic unit can miss + * an FC register write due to being busy processing the previous one. + * The issue can be worked around by issuing a TMDS software reset and + * then write one of the FC registers several times. + * + * The number of iterations matters and depends on the HDMI TX revision + * (and possibly on the platform). + * 4 iterations for i.MX6Q(v1.30a) and 1 iteration for others. + * i.MX6DL (v1.31a), Allwinner SoCs (v1.32a), Rockchip RK3288 SoC (v2.00a), + * Amlogic Meson GX SoCs (v2.01a), RK3328/RK3399 SoCs (v2.11a) + * and i.MX8MPlus (v2.13a) have been identified as needing the workaround + * with a single iteration. + */ + + switch (hdmi->version) { + case 0x130a: + count = 4; + break; + default: + count = 1; + break; + } + + /* TMDS software reset */ + hdmi_writeb(hdmi, (u8)~HDMI_MC_SWRSTZ_TMDSSWRST_REQ, HDMI_MC_SWRSTZ); + + val = hdmi_readb(hdmi, HDMI_FC_INVIDCONF); + for (i = 0; i < count; i++) + hdmi_writeb(hdmi, val, HDMI_FC_INVIDCONF); +} + +static void hdmi_disable_overflow_interrupts(struct dw_hdmi *hdmi) +{ + hdmi_writeb(hdmi, HDMI_IH_MUTE_FC_STAT2_OVERFLOW_MASK, + HDMI_IH_MUTE_FC_STAT2); +} + +static int dw_hdmi_setup(struct dw_hdmi *hdmi, + const struct drm_connector *connector, + const struct drm_display_mode *mode) +{ + int ret; + + hdmi_disable_overflow_interrupts(hdmi); + + hdmi->vic = drm_match_cea_mode(mode); + + if (!hdmi->vic) { + dev_dbg(hdmi->dev, "Non-CEA mode used in HDMI\n"); + } else { + dev_dbg(hdmi->dev, "CEA mode used vic=%d\n", hdmi->vic); + } + + if ((hdmi->vic == 6) || (hdmi->vic == 7) || + (hdmi->vic == 21) || (hdmi->vic == 22) || + (hdmi->vic == 2) || (hdmi->vic == 3) || + (hdmi->vic == 17) || (hdmi->vic == 18)) + hdmi->hdmi_data.enc_out_encoding = V4L2_YCBCR_ENC_601; + else + hdmi->hdmi_data.enc_out_encoding = V4L2_YCBCR_ENC_709; + + hdmi->hdmi_data.video_mode.mpixelrepetitionoutput = 0; + hdmi->hdmi_data.video_mode.mpixelrepetitioninput = 0; + + if (hdmi->hdmi_data.enc_in_bus_format == MEDIA_BUS_FMT_FIXED) + hdmi->hdmi_data.enc_in_bus_format = MEDIA_BUS_FMT_RGB888_1X24; + + /* TOFIX: Get input encoding from plat data or fallback to none */ + if (hdmi->plat_data->input_bus_encoding) + hdmi->hdmi_data.enc_in_encoding = + hdmi->plat_data->input_bus_encoding; + else + hdmi->hdmi_data.enc_in_encoding = V4L2_YCBCR_ENC_DEFAULT; + + if (hdmi->hdmi_data.enc_out_bus_format == MEDIA_BUS_FMT_FIXED) + hdmi->hdmi_data.enc_out_bus_format = MEDIA_BUS_FMT_RGB888_1X24; + + hdmi->hdmi_data.rgb_limited_range = hdmi->sink_is_hdmi && + drm_default_rgb_quant_range(mode) == + HDMI_QUANTIZATION_RANGE_LIMITED; + + hdmi->hdmi_data.pix_repet_factor = 0; + hdmi->hdmi_data.hdcp_enable = 0; + hdmi->hdmi_data.video_mode.mdataenablepolarity = true; + + /* HDMI Initialization Step B.1 */ + hdmi_av_composer(hdmi, &connector->display_info, mode); + + /* HDMI Initializateion Step B.2 */ + ret = hdmi->phy.ops->init(hdmi, hdmi->phy.data, + &connector->display_info, + &hdmi->previous_mode); + if (ret) + return ret; + hdmi->phy.enabled = true; + + /* HDMI Initialization Step B.3 */ + dw_hdmi_enable_video_path(hdmi); + + if (hdmi->sink_has_audio) { + dev_dbg(hdmi->dev, "sink has audio support\n"); + + /* HDMI Initialization Step E - Configure audio */ + hdmi_clk_regenerator_update_pixel_clock(hdmi); + hdmi_enable_audio_clk(hdmi, hdmi->audio_enable); + } + + /* not for DVI mode */ + if (hdmi->sink_is_hdmi) { + dev_dbg(hdmi->dev, "%s HDMI mode\n", __func__); + + /* HDMI Initialization Step F - Configure AVI InfoFrame */ + hdmi_config_AVI(hdmi, connector, mode); + hdmi_config_vendor_specific_infoframe(hdmi, connector, mode); + hdmi_config_drm_infoframe(hdmi, connector); + } else { + dev_dbg(hdmi->dev, "%s DVI mode\n", __func__); + } + + hdmi_video_packetize(hdmi); + hdmi_video_csc(hdmi); + hdmi_video_sample(hdmi); + hdmi_tx_hdcp_config(hdmi); + + dw_hdmi_clear_overflow(hdmi); + + return 0; +} + +static void initialize_hdmi_ih_mutes(struct dw_hdmi *hdmi) +{ + u8 ih_mute; + + /* + * Boot up defaults are: + * HDMI_IH_MUTE = 0x03 (disabled) + * HDMI_IH_MUTE_* = 0x00 (enabled) + * + * Disable top level interrupt bits in HDMI block + */ + ih_mute = hdmi_readb(hdmi, HDMI_IH_MUTE) | + HDMI_IH_MUTE_MUTE_WAKEUP_INTERRUPT | + HDMI_IH_MUTE_MUTE_ALL_INTERRUPT; + + hdmi_writeb(hdmi, ih_mute, HDMI_IH_MUTE); + + /* by default mask all interrupts */ + hdmi_writeb(hdmi, 0xff, HDMI_VP_MASK); + hdmi_writeb(hdmi, 0xff, HDMI_FC_MASK0); + hdmi_writeb(hdmi, 0xff, HDMI_FC_MASK1); + hdmi_writeb(hdmi, 0xff, HDMI_FC_MASK2); + hdmi_writeb(hdmi, 0xff, HDMI_PHY_MASK0); + hdmi_writeb(hdmi, 0xff, HDMI_PHY_I2CM_INT_ADDR); + hdmi_writeb(hdmi, 0xff, HDMI_PHY_I2CM_CTLINT_ADDR); + hdmi_writeb(hdmi, 0xff, HDMI_AUD_INT); + hdmi_writeb(hdmi, 0xff, HDMI_AUD_SPDIFINT); + hdmi_writeb(hdmi, 0xff, HDMI_AUD_HBR_MASK); + hdmi_writeb(hdmi, 0xff, HDMI_GP_MASK); + hdmi_writeb(hdmi, 0xff, HDMI_A_APIINTMSK); + hdmi_writeb(hdmi, 0xff, HDMI_I2CM_INT); + hdmi_writeb(hdmi, 0xff, HDMI_I2CM_CTLINT); + + /* Disable interrupts in the IH_MUTE_* registers */ + hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_FC_STAT0); + hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_FC_STAT1); + hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_FC_STAT2); + hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_AS_STAT0); + hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_PHY_STAT0); + hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_I2CM_STAT0); + hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_CEC_STAT0); + hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_VP_STAT0); + hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_I2CMPHY_STAT0); + hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_AHBDMAAUD_STAT0); + + /* Enable top level interrupt bits in HDMI block */ + ih_mute &= ~(HDMI_IH_MUTE_MUTE_WAKEUP_INTERRUPT | + HDMI_IH_MUTE_MUTE_ALL_INTERRUPT); + hdmi_writeb(hdmi, ih_mute, HDMI_IH_MUTE); +} + +static void dw_hdmi_poweron(struct dw_hdmi *hdmi) +{ + hdmi->bridge_is_on = true; + + /* + * The curr_conn field is guaranteed to be valid here, as this function + * is only be called when !hdmi->disabled. + */ + dw_hdmi_setup(hdmi, hdmi->curr_conn, &hdmi->previous_mode); +} + +static void dw_hdmi_poweroff(struct dw_hdmi *hdmi) +{ + if (hdmi->phy.enabled) { + hdmi->phy.ops->disable(hdmi, hdmi->phy.data); + hdmi->phy.enabled = false; + } + + hdmi->bridge_is_on = false; +} + +static void dw_hdmi_update_power(struct dw_hdmi *hdmi) +{ + int force = hdmi->force; + + if (hdmi->disabled) { + force = DRM_FORCE_OFF; + } else if (force == DRM_FORCE_UNSPECIFIED) { + if (hdmi->rxsense) + force = DRM_FORCE_ON; + else + force = DRM_FORCE_OFF; + } + + if (force == DRM_FORCE_OFF) { + if (hdmi->bridge_is_on) + dw_hdmi_poweroff(hdmi); + } else { + if (!hdmi->bridge_is_on) + dw_hdmi_poweron(hdmi); + } +} + +/* + * Adjust the detection of RXSENSE according to whether we have a forced + * connection mode enabled, or whether we have been disabled. There is + * no point processing RXSENSE interrupts if we have a forced connection + * state, or DRM has us disabled. + * + * We also disable rxsense interrupts when we think we're disconnected + * to avoid floating TDMS signals giving false rxsense interrupts. + * + * Note: we still need to listen for HPD interrupts even when DRM has us + * disabled so that we can detect a connect event. + */ +static void dw_hdmi_update_phy_mask(struct dw_hdmi *hdmi) +{ + if (hdmi->phy.ops->update_hpd) + hdmi->phy.ops->update_hpd(hdmi, hdmi->phy.data, + hdmi->force, hdmi->disabled, + hdmi->rxsense); +} + +static enum drm_connector_status dw_hdmi_detect(struct dw_hdmi *hdmi) +{ + enum drm_connector_status result; + + result = hdmi->phy.ops->read_hpd(hdmi, hdmi->phy.data); + + mutex_lock(&hdmi->mutex); + if (result != hdmi->last_connector_result) { + dev_dbg(hdmi->dev, "read_hpd result: %d", result); + handle_plugged_change(hdmi, + result == connector_status_connected); + hdmi->last_connector_result = result; + } + mutex_unlock(&hdmi->mutex); + + return result; +} + +static struct edid *dw_hdmi_get_edid(struct dw_hdmi *hdmi, + struct drm_connector *connector) +{ + struct edid *edid; + + if (!hdmi->ddc) + return NULL; + + edid = drm_get_edid(connector, hdmi->ddc); + if (!edid) { + dev_dbg(hdmi->dev, "failed to get edid\n"); + return NULL; + } + + dev_dbg(hdmi->dev, "got edid: width[%d] x height[%d]\n", + edid->width_cm, edid->height_cm); + + hdmi->sink_is_hdmi = drm_detect_hdmi_monitor(edid); + hdmi->sink_has_audio = drm_detect_monitor_audio(edid); + + return edid; +} + +/* ----------------------------------------------------------------------------- + * DRM Connector Operations + */ + +static enum drm_connector_status +dw_hdmi_connector_detect(struct drm_connector *connector, bool force) +{ + struct dw_hdmi *hdmi = container_of(connector, struct dw_hdmi, + connector); + return dw_hdmi_detect(hdmi); +} + +static int dw_hdmi_connector_get_modes(struct drm_connector *connector) +{ + struct dw_hdmi *hdmi = container_of(connector, struct dw_hdmi, + connector); + struct edid *edid; + int ret; + + edid = dw_hdmi_get_edid(hdmi, connector); + if (!edid) + return 0; + + drm_connector_update_edid_property(connector, edid); + cec_notifier_set_phys_addr_from_edid(hdmi->cec_notifier, edid); + ret = drm_add_edid_modes(connector, edid); + kfree(edid); + + return ret; +} + +static int dw_hdmi_connector_atomic_check(struct drm_connector *connector, + struct drm_atomic_state *state) +{ + struct drm_connector_state *old_state = + drm_atomic_get_old_connector_state(state, connector); + struct drm_connector_state *new_state = + drm_atomic_get_new_connector_state(state, connector); + struct drm_crtc *crtc = new_state->crtc; + struct drm_crtc_state *crtc_state; + + if (!crtc) + return 0; + + if (!drm_connector_atomic_hdr_metadata_equal(old_state, new_state)) { + crtc_state = drm_atomic_get_crtc_state(state, crtc); + if (IS_ERR(crtc_state)) + return PTR_ERR(crtc_state); + + crtc_state->mode_changed = true; + } + + return 0; +} + +static void dw_hdmi_connector_force(struct drm_connector *connector) +{ + struct dw_hdmi *hdmi = container_of(connector, struct dw_hdmi, + connector); + + mutex_lock(&hdmi->mutex); + hdmi->force = connector->force; + dw_hdmi_update_power(hdmi); + dw_hdmi_update_phy_mask(hdmi); + mutex_unlock(&hdmi->mutex); +} + +static const struct drm_connector_funcs dw_hdmi_connector_funcs = { + .fill_modes = drm_helper_probe_single_connector_modes, + .detect = dw_hdmi_connector_detect, + .destroy = drm_connector_cleanup, + .force = dw_hdmi_connector_force, + .reset = drm_atomic_helper_connector_reset, + .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, +}; + +static const struct drm_connector_helper_funcs dw_hdmi_connector_helper_funcs = { + .get_modes = dw_hdmi_connector_get_modes, + .atomic_check = dw_hdmi_connector_atomic_check, +}; + +static int dw_hdmi_connector_create(struct dw_hdmi *hdmi) +{ + struct drm_connector *connector = &hdmi->connector; + struct cec_connector_info conn_info; + struct cec_notifier *notifier; + + if (hdmi->version >= 0x200a) + connector->ycbcr_420_allowed = + hdmi->plat_data->ycbcr_420_allowed; + else + connector->ycbcr_420_allowed = false; + + connector->interlace_allowed = 1; + connector->polled = DRM_CONNECTOR_POLL_HPD; + + drm_connector_helper_add(connector, &dw_hdmi_connector_helper_funcs); + + drm_connector_init_with_ddc(hdmi->bridge.dev, connector, + &dw_hdmi_connector_funcs, + DRM_MODE_CONNECTOR_HDMIA, + hdmi->ddc); + + /* + * drm_connector_attach_max_bpc_property() requires the + * connector to have a state. + */ + drm_atomic_helper_connector_reset(connector); + + drm_connector_attach_max_bpc_property(connector, 8, 16); + + if (hdmi->version >= 0x200a && hdmi->plat_data->use_drm_infoframe) + drm_connector_attach_hdr_output_metadata_property(connector); + + drm_connector_attach_encoder(connector, hdmi->bridge.encoder); + + cec_fill_conn_info_from_drm(&conn_info, connector); + + notifier = cec_notifier_conn_register(hdmi->dev, NULL, &conn_info); + if (!notifier) + return -ENOMEM; + + mutex_lock(&hdmi->cec_notifier_mutex); + hdmi->cec_notifier = notifier; + mutex_unlock(&hdmi->cec_notifier_mutex); + + return 0; +} + +/* ----------------------------------------------------------------------------- + * DRM Bridge Operations + */ + +/* + * Possible output formats : + * - MEDIA_BUS_FMT_UYYVYY16_0_5X48, + * - MEDIA_BUS_FMT_UYYVYY12_0_5X36, + * - MEDIA_BUS_FMT_UYYVYY10_0_5X30, + * - MEDIA_BUS_FMT_UYYVYY8_0_5X24, + * - MEDIA_BUS_FMT_YUV16_1X48, + * - MEDIA_BUS_FMT_RGB161616_1X48, + * - MEDIA_BUS_FMT_UYVY12_1X24, + * - MEDIA_BUS_FMT_YUV12_1X36, + * - MEDIA_BUS_FMT_RGB121212_1X36, + * - MEDIA_BUS_FMT_UYVY10_1X20, + * - MEDIA_BUS_FMT_YUV10_1X30, + * - MEDIA_BUS_FMT_RGB101010_1X30, + * - MEDIA_BUS_FMT_UYVY8_1X16, + * - MEDIA_BUS_FMT_YUV8_1X24, + * - MEDIA_BUS_FMT_RGB888_1X24, + */ + +/* Can return a maximum of 11 possible output formats for a mode/connector */ +#define MAX_OUTPUT_SEL_FORMATS 11 + +static u32 *dw_hdmi_bridge_atomic_get_output_bus_fmts(struct drm_bridge *bridge, + struct drm_bridge_state *bridge_state, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state, + unsigned int *num_output_fmts) +{ + struct drm_connector *conn = conn_state->connector; + struct drm_display_info *info = &conn->display_info; + struct drm_display_mode *mode = &crtc_state->mode; + u8 max_bpc = conn_state->max_requested_bpc; + bool is_hdmi2_sink = info->hdmi.scdc.supported || + (info->color_formats & DRM_COLOR_FORMAT_YCBCR420); + u32 *output_fmts; + unsigned int i = 0; + + *num_output_fmts = 0; + + output_fmts = kcalloc(MAX_OUTPUT_SEL_FORMATS, sizeof(*output_fmts), + GFP_KERNEL); + if (!output_fmts) + return NULL; + + /* If dw-hdmi is the first or only bridge, avoid negociating with ourselves */ + if (list_is_singular(&bridge->encoder->bridge_chain) || + list_is_first(&bridge->chain_node, &bridge->encoder->bridge_chain)) { + *num_output_fmts = 1; + output_fmts[0] = MEDIA_BUS_FMT_FIXED; + + return output_fmts; + } + + /* + * If the current mode enforces 4:2:0, force the output but format + * to 4:2:0 and do not add the YUV422/444/RGB formats + */ + if (conn->ycbcr_420_allowed && + (drm_mode_is_420_only(info, mode) || + (is_hdmi2_sink && drm_mode_is_420_also(info, mode)))) { + + /* Order bus formats from 16bit to 8bit if supported */ + if (max_bpc >= 16 && info->bpc == 16 && + (info->hdmi.y420_dc_modes & DRM_EDID_YCBCR420_DC_48)) + output_fmts[i++] = MEDIA_BUS_FMT_UYYVYY16_0_5X48; + + if (max_bpc >= 12 && info->bpc >= 12 && + (info->hdmi.y420_dc_modes & DRM_EDID_YCBCR420_DC_36)) + output_fmts[i++] = MEDIA_BUS_FMT_UYYVYY12_0_5X36; + + if (max_bpc >= 10 && info->bpc >= 10 && + (info->hdmi.y420_dc_modes & DRM_EDID_YCBCR420_DC_30)) + output_fmts[i++] = MEDIA_BUS_FMT_UYYVYY10_0_5X30; + + /* Default 8bit fallback */ + output_fmts[i++] = MEDIA_BUS_FMT_UYYVYY8_0_5X24; + + *num_output_fmts = i; + + return output_fmts; + } + + /* + * Order bus formats from 16bit to 8bit and from YUV422 to RGB + * if supported. In any case the default RGB888 format is added + */ + + /* Default 8bit RGB fallback */ + output_fmts[i++] = MEDIA_BUS_FMT_RGB888_1X24; + + if (max_bpc >= 16 && info->bpc == 16) { + if (info->color_formats & DRM_COLOR_FORMAT_YCBCR444) + output_fmts[i++] = MEDIA_BUS_FMT_YUV16_1X48; + + output_fmts[i++] = MEDIA_BUS_FMT_RGB161616_1X48; + } + + if (max_bpc >= 12 && info->bpc >= 12) { + if (info->color_formats & DRM_COLOR_FORMAT_YCBCR422) + output_fmts[i++] = MEDIA_BUS_FMT_UYVY12_1X24; + + if (info->color_formats & DRM_COLOR_FORMAT_YCBCR444) + output_fmts[i++] = MEDIA_BUS_FMT_YUV12_1X36; + + output_fmts[i++] = MEDIA_BUS_FMT_RGB121212_1X36; + } + + if (max_bpc >= 10 && info->bpc >= 10) { + if (info->color_formats & DRM_COLOR_FORMAT_YCBCR422) + output_fmts[i++] = MEDIA_BUS_FMT_UYVY10_1X20; + + if (info->color_formats & DRM_COLOR_FORMAT_YCBCR444) + output_fmts[i++] = MEDIA_BUS_FMT_YUV10_1X30; + + output_fmts[i++] = MEDIA_BUS_FMT_RGB101010_1X30; + } + + if (info->color_formats & DRM_COLOR_FORMAT_YCBCR422) + output_fmts[i++] = MEDIA_BUS_FMT_UYVY8_1X16; + + if (info->color_formats & DRM_COLOR_FORMAT_YCBCR444) + output_fmts[i++] = MEDIA_BUS_FMT_YUV8_1X24; + + *num_output_fmts = i; + + return output_fmts; +} + +/* + * Possible input formats : + * - MEDIA_BUS_FMT_RGB888_1X24 + * - MEDIA_BUS_FMT_YUV8_1X24 + * - MEDIA_BUS_FMT_UYVY8_1X16 + * - MEDIA_BUS_FMT_UYYVYY8_0_5X24 + * - MEDIA_BUS_FMT_RGB101010_1X30 + * - MEDIA_BUS_FMT_YUV10_1X30 + * - MEDIA_BUS_FMT_UYVY10_1X20 + * - MEDIA_BUS_FMT_UYYVYY10_0_5X30 + * - MEDIA_BUS_FMT_RGB121212_1X36 + * - MEDIA_BUS_FMT_YUV12_1X36 + * - MEDIA_BUS_FMT_UYVY12_1X24 + * - MEDIA_BUS_FMT_UYYVYY12_0_5X36 + * - MEDIA_BUS_FMT_RGB161616_1X48 + * - MEDIA_BUS_FMT_YUV16_1X48 + * - MEDIA_BUS_FMT_UYYVYY16_0_5X48 + */ + +/* Can return a maximum of 3 possible input formats for an output format */ +#define MAX_INPUT_SEL_FORMATS 3 + +static u32 *dw_hdmi_bridge_atomic_get_input_bus_fmts(struct drm_bridge *bridge, + struct drm_bridge_state *bridge_state, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state, + u32 output_fmt, + unsigned int *num_input_fmts) +{ + u32 *input_fmts; + unsigned int i = 0; + + *num_input_fmts = 0; + + input_fmts = kcalloc(MAX_INPUT_SEL_FORMATS, sizeof(*input_fmts), + GFP_KERNEL); + if (!input_fmts) + return NULL; + + switch (output_fmt) { + /* If MEDIA_BUS_FMT_FIXED is tested, return default bus format */ + case MEDIA_BUS_FMT_FIXED: + input_fmts[i++] = MEDIA_BUS_FMT_RGB888_1X24; + break; + /* 8bit */ + case MEDIA_BUS_FMT_RGB888_1X24: + input_fmts[i++] = MEDIA_BUS_FMT_RGB888_1X24; + input_fmts[i++] = MEDIA_BUS_FMT_YUV8_1X24; + input_fmts[i++] = MEDIA_BUS_FMT_UYVY8_1X16; + break; + case MEDIA_BUS_FMT_YUV8_1X24: + input_fmts[i++] = MEDIA_BUS_FMT_YUV8_1X24; + input_fmts[i++] = MEDIA_BUS_FMT_UYVY8_1X16; + input_fmts[i++] = MEDIA_BUS_FMT_RGB888_1X24; + break; + case MEDIA_BUS_FMT_UYVY8_1X16: + input_fmts[i++] = MEDIA_BUS_FMT_UYVY8_1X16; + input_fmts[i++] = MEDIA_BUS_FMT_YUV8_1X24; + input_fmts[i++] = MEDIA_BUS_FMT_RGB888_1X24; + break; + + /* 10bit */ + case MEDIA_BUS_FMT_RGB101010_1X30: + input_fmts[i++] = MEDIA_BUS_FMT_RGB101010_1X30; + input_fmts[i++] = MEDIA_BUS_FMT_YUV10_1X30; + input_fmts[i++] = MEDIA_BUS_FMT_UYVY10_1X20; + break; + case MEDIA_BUS_FMT_YUV10_1X30: + input_fmts[i++] = MEDIA_BUS_FMT_YUV10_1X30; + input_fmts[i++] = MEDIA_BUS_FMT_UYVY10_1X20; + input_fmts[i++] = MEDIA_BUS_FMT_RGB101010_1X30; + break; + case MEDIA_BUS_FMT_UYVY10_1X20: + input_fmts[i++] = MEDIA_BUS_FMT_UYVY10_1X20; + input_fmts[i++] = MEDIA_BUS_FMT_YUV10_1X30; + input_fmts[i++] = MEDIA_BUS_FMT_RGB101010_1X30; + break; + + /* 12bit */ + case MEDIA_BUS_FMT_RGB121212_1X36: + input_fmts[i++] = MEDIA_BUS_FMT_RGB121212_1X36; + input_fmts[i++] = MEDIA_BUS_FMT_YUV12_1X36; + input_fmts[i++] = MEDIA_BUS_FMT_UYVY12_1X24; + break; + case MEDIA_BUS_FMT_YUV12_1X36: + input_fmts[i++] = MEDIA_BUS_FMT_YUV12_1X36; + input_fmts[i++] = MEDIA_BUS_FMT_UYVY12_1X24; + input_fmts[i++] = MEDIA_BUS_FMT_RGB121212_1X36; + break; + case MEDIA_BUS_FMT_UYVY12_1X24: + input_fmts[i++] = MEDIA_BUS_FMT_UYVY12_1X24; + input_fmts[i++] = MEDIA_BUS_FMT_YUV12_1X36; + input_fmts[i++] = MEDIA_BUS_FMT_RGB121212_1X36; + break; + + /* 16bit */ + case MEDIA_BUS_FMT_RGB161616_1X48: + input_fmts[i++] = MEDIA_BUS_FMT_RGB161616_1X48; + input_fmts[i++] = MEDIA_BUS_FMT_YUV16_1X48; + break; + case MEDIA_BUS_FMT_YUV16_1X48: + input_fmts[i++] = MEDIA_BUS_FMT_YUV16_1X48; + input_fmts[i++] = MEDIA_BUS_FMT_RGB161616_1X48; + break; + + /*YUV 4:2:0 */ + case MEDIA_BUS_FMT_UYYVYY8_0_5X24: + case MEDIA_BUS_FMT_UYYVYY10_0_5X30: + case MEDIA_BUS_FMT_UYYVYY12_0_5X36: + case MEDIA_BUS_FMT_UYYVYY16_0_5X48: + input_fmts[i++] = output_fmt; + break; + } + + *num_input_fmts = i; + + if (*num_input_fmts == 0) { + kfree(input_fmts); + input_fmts = NULL; + } + + return input_fmts; +} + +static int dw_hdmi_bridge_atomic_check(struct drm_bridge *bridge, + struct drm_bridge_state *bridge_state, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state) +{ + struct dw_hdmi *hdmi = bridge->driver_private; + + hdmi->hdmi_data.enc_out_bus_format = + bridge_state->output_bus_cfg.format; + + hdmi->hdmi_data.enc_in_bus_format = + bridge_state->input_bus_cfg.format; + + dev_dbg(hdmi->dev, "input format 0x%04x, output format 0x%04x\n", + bridge_state->input_bus_cfg.format, + bridge_state->output_bus_cfg.format); + + return 0; +} + +static int dw_hdmi_bridge_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) +{ + struct dw_hdmi *hdmi = bridge->driver_private; + + if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) + return drm_bridge_attach(bridge->encoder, hdmi->next_bridge, + bridge, flags); + + return dw_hdmi_connector_create(hdmi); +} + +static void dw_hdmi_bridge_detach(struct drm_bridge *bridge) +{ + struct dw_hdmi *hdmi = bridge->driver_private; + + mutex_lock(&hdmi->cec_notifier_mutex); + cec_notifier_conn_unregister(hdmi->cec_notifier); + hdmi->cec_notifier = NULL; + mutex_unlock(&hdmi->cec_notifier_mutex); +} + +static enum drm_mode_status +dw_hdmi_bridge_mode_valid(struct drm_bridge *bridge, + const struct drm_display_info *info, + const struct drm_display_mode *mode) +{ + struct dw_hdmi *hdmi = bridge->driver_private; + const struct dw_hdmi_plat_data *pdata = hdmi->plat_data; + enum drm_mode_status mode_status = MODE_OK; + + /* We don't support double-clocked modes */ + if (mode->flags & DRM_MODE_FLAG_DBLCLK) + return MODE_BAD; + + if (pdata->mode_valid) + mode_status = pdata->mode_valid(hdmi, pdata->priv_data, info, + mode); + + return mode_status; +} + +static void dw_hdmi_bridge_mode_set(struct drm_bridge *bridge, + const struct drm_display_mode *orig_mode, + const struct drm_display_mode *mode) +{ + struct dw_hdmi *hdmi = bridge->driver_private; + + mutex_lock(&hdmi->mutex); + + /* Store the display mode for plugin/DKMS poweron events */ + drm_mode_copy(&hdmi->previous_mode, mode); + + mutex_unlock(&hdmi->mutex); +} + +static void dw_hdmi_bridge_atomic_disable(struct drm_bridge *bridge, + struct drm_bridge_state *old_state) +{ + struct dw_hdmi *hdmi = bridge->driver_private; + + mutex_lock(&hdmi->mutex); + hdmi->disabled = true; + hdmi->curr_conn = NULL; + dw_hdmi_update_power(hdmi); + dw_hdmi_update_phy_mask(hdmi); + mutex_unlock(&hdmi->mutex); +} + +static void dw_hdmi_bridge_atomic_enable(struct drm_bridge *bridge, + struct drm_bridge_state *old_state) +{ + struct dw_hdmi *hdmi = bridge->driver_private; + struct drm_atomic_state *state = old_state->base.state; + struct drm_connector *connector; + + connector = drm_atomic_get_new_connector_for_encoder(state, + bridge->encoder); + + mutex_lock(&hdmi->mutex); + hdmi->disabled = false; + hdmi->curr_conn = connector; + dw_hdmi_update_power(hdmi); + dw_hdmi_update_phy_mask(hdmi); + mutex_unlock(&hdmi->mutex); +} + +static enum drm_connector_status dw_hdmi_bridge_detect(struct drm_bridge *bridge) +{ + struct dw_hdmi *hdmi = bridge->driver_private; + + return dw_hdmi_detect(hdmi); +} + +static struct edid *dw_hdmi_bridge_get_edid(struct drm_bridge *bridge, + struct drm_connector *connector) +{ + struct dw_hdmi *hdmi = bridge->driver_private; + + return dw_hdmi_get_edid(hdmi, connector); +} + +static const struct drm_bridge_funcs dw_hdmi_bridge_funcs = { + .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, + .atomic_reset = drm_atomic_helper_bridge_reset, + .attach = dw_hdmi_bridge_attach, + .detach = dw_hdmi_bridge_detach, + .atomic_check = dw_hdmi_bridge_atomic_check, + .atomic_get_output_bus_fmts = dw_hdmi_bridge_atomic_get_output_bus_fmts, + .atomic_get_input_bus_fmts = dw_hdmi_bridge_atomic_get_input_bus_fmts, + .atomic_enable = dw_hdmi_bridge_atomic_enable, + .atomic_disable = dw_hdmi_bridge_atomic_disable, + .mode_set = dw_hdmi_bridge_mode_set, + .mode_valid = dw_hdmi_bridge_mode_valid, + .detect = dw_hdmi_bridge_detect, + .get_edid = dw_hdmi_bridge_get_edid, +}; + +/* ----------------------------------------------------------------------------- + * IRQ Handling + */ + +static irqreturn_t dw_hdmi_i2c_irq(struct dw_hdmi *hdmi) +{ + struct dw_hdmi_i2c *i2c = hdmi->i2c; + unsigned int stat; + + stat = hdmi_readb(hdmi, HDMI_IH_I2CM_STAT0); + if (!stat) + return IRQ_NONE; + + hdmi_writeb(hdmi, stat, HDMI_IH_I2CM_STAT0); + + i2c->stat = stat; + + complete(&i2c->cmp); + + return IRQ_HANDLED; +} + +static irqreturn_t dw_hdmi_hardirq(int irq, void *dev_id) +{ + struct dw_hdmi *hdmi = dev_id; + u8 intr_stat; + irqreturn_t ret = IRQ_NONE; + + if (hdmi->i2c) + ret = dw_hdmi_i2c_irq(hdmi); + + intr_stat = hdmi_readb(hdmi, HDMI_IH_PHY_STAT0); + if (intr_stat) { + hdmi_writeb(hdmi, ~0, HDMI_IH_MUTE_PHY_STAT0); + return IRQ_WAKE_THREAD; + } + + return ret; +} + +void dw_hdmi_setup_rx_sense(struct dw_hdmi *hdmi, bool hpd, bool rx_sense) +{ + mutex_lock(&hdmi->mutex); + + if (!hdmi->force) { + /* + * If the RX sense status indicates we're disconnected, + * clear the software rxsense status. + */ + if (!rx_sense) + hdmi->rxsense = false; + + /* + * Only set the software rxsense status when both + * rxsense and hpd indicates we're connected. + * This avoids what seems to be bad behaviour in + * at least iMX6S versions of the phy. + */ + if (hpd) + hdmi->rxsense = true; + + dw_hdmi_update_power(hdmi); + dw_hdmi_update_phy_mask(hdmi); + } + mutex_unlock(&hdmi->mutex); +} +EXPORT_SYMBOL_GPL(dw_hdmi_setup_rx_sense); + +static irqreturn_t dw_hdmi_irq(int irq, void *dev_id) +{ + struct dw_hdmi *hdmi = dev_id; + u8 intr_stat, phy_int_pol, phy_pol_mask, phy_stat; + enum drm_connector_status status = connector_status_unknown; + + intr_stat = hdmi_readb(hdmi, HDMI_IH_PHY_STAT0); + phy_int_pol = hdmi_readb(hdmi, HDMI_PHY_POL0); + phy_stat = hdmi_readb(hdmi, HDMI_PHY_STAT0); + + phy_pol_mask = 0; + if (intr_stat & HDMI_IH_PHY_STAT0_HPD) + phy_pol_mask |= HDMI_PHY_HPD; + if (intr_stat & HDMI_IH_PHY_STAT0_RX_SENSE0) + phy_pol_mask |= HDMI_PHY_RX_SENSE0; + if (intr_stat & HDMI_IH_PHY_STAT0_RX_SENSE1) + phy_pol_mask |= HDMI_PHY_RX_SENSE1; + if (intr_stat & HDMI_IH_PHY_STAT0_RX_SENSE2) + phy_pol_mask |= HDMI_PHY_RX_SENSE2; + if (intr_stat & HDMI_IH_PHY_STAT0_RX_SENSE3) + phy_pol_mask |= HDMI_PHY_RX_SENSE3; + + if (phy_pol_mask) + hdmi_modb(hdmi, ~phy_int_pol, phy_pol_mask, HDMI_PHY_POL0); + + /* + * RX sense tells us whether the TDMS transmitters are detecting + * load - in other words, there's something listening on the + * other end of the link. Use this to decide whether we should + * power on the phy as HPD may be toggled by the sink to merely + * ask the source to re-read the EDID. + */ + if (intr_stat & + (HDMI_IH_PHY_STAT0_RX_SENSE | HDMI_IH_PHY_STAT0_HPD)) { + dw_hdmi_setup_rx_sense(hdmi, + phy_stat & HDMI_PHY_HPD, + phy_stat & HDMI_PHY_RX_SENSE); + + if ((phy_stat & (HDMI_PHY_RX_SENSE | HDMI_PHY_HPD)) == 0) { + mutex_lock(&hdmi->cec_notifier_mutex); + cec_notifier_phys_addr_invalidate(hdmi->cec_notifier); + mutex_unlock(&hdmi->cec_notifier_mutex); + } + + if (phy_stat & HDMI_PHY_HPD) + status = connector_status_connected; + + if (!(phy_stat & (HDMI_PHY_HPD | HDMI_PHY_RX_SENSE))) + status = connector_status_disconnected; + } + + if (status != connector_status_unknown) { + dev_dbg(hdmi->dev, "EVENT=%s\n", + status == connector_status_connected ? + "plugin" : "plugout"); + + if (hdmi->bridge.dev) { + drm_helper_hpd_irq_event(hdmi->bridge.dev); + drm_bridge_hpd_notify(&hdmi->bridge, status); + } + } + + hdmi_writeb(hdmi, intr_stat, HDMI_IH_PHY_STAT0); + hdmi_writeb(hdmi, ~(HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE), + HDMI_IH_MUTE_PHY_STAT0); + + return IRQ_HANDLED; +} + +static const struct dw_hdmi_phy_data dw_hdmi_phys[] = { + { + .type = DW_HDMI_PHY_DWC_HDMI_TX_PHY, + .name = "DWC HDMI TX PHY", + .gen = 1, + }, { + .type = DW_HDMI_PHY_DWC_MHL_PHY_HEAC, + .name = "DWC MHL PHY + HEAC PHY", + .gen = 2, + .has_svsret = true, + .configure = hdmi_phy_configure_dwc_hdmi_3d_tx, + }, { + .type = DW_HDMI_PHY_DWC_MHL_PHY, + .name = "DWC MHL PHY", + .gen = 2, + .has_svsret = true, + .configure = hdmi_phy_configure_dwc_hdmi_3d_tx, + }, { + .type = DW_HDMI_PHY_DWC_HDMI_3D_TX_PHY_HEAC, + .name = "DWC HDMI 3D TX PHY + HEAC PHY", + .gen = 2, + .configure = hdmi_phy_configure_dwc_hdmi_3d_tx, + }, { + .type = DW_HDMI_PHY_DWC_HDMI_3D_TX_PHY, + .name = "DWC HDMI 3D TX PHY", + .gen = 2, + .configure = hdmi_phy_configure_dwc_hdmi_3d_tx, + }, { + .type = DW_HDMI_PHY_DWC_HDMI20_TX_PHY, + .name = "DWC HDMI 2.0 TX PHY", + .gen = 2, + .has_svsret = true, + .configure = hdmi_phy_configure_dwc_hdmi_3d_tx, + }, { + .type = DW_HDMI_PHY_VENDOR_PHY, + .name = "Vendor PHY", + } +}; + +static int dw_hdmi_detect_phy(struct dw_hdmi *hdmi) +{ + unsigned int i; + u8 phy_type; + + phy_type = hdmi->plat_data->phy_force_vendor ? + DW_HDMI_PHY_VENDOR_PHY : + hdmi_readb(hdmi, HDMI_CONFIG2_ID); + + if (phy_type == DW_HDMI_PHY_VENDOR_PHY) { + /* Vendor PHYs require support from the glue layer. */ + if (!hdmi->plat_data->phy_ops || !hdmi->plat_data->phy_name) { + dev_err(hdmi->dev, + "Vendor HDMI PHY not supported by glue layer\n"); + return -ENODEV; + } + + hdmi->phy.ops = hdmi->plat_data->phy_ops; + hdmi->phy.data = hdmi->plat_data->phy_data; + hdmi->phy.name = hdmi->plat_data->phy_name; + return 0; + } + + /* Synopsys PHYs are handled internally. */ + for (i = 0; i < ARRAY_SIZE(dw_hdmi_phys); ++i) { + if (dw_hdmi_phys[i].type == phy_type) { + hdmi->phy.ops = &dw_hdmi_synopsys_phy_ops; + hdmi->phy.name = dw_hdmi_phys[i].name; + hdmi->phy.data = (void *)&dw_hdmi_phys[i]; + + if (!dw_hdmi_phys[i].configure && + !hdmi->plat_data->configure_phy) { + dev_err(hdmi->dev, "%s requires platform support\n", + hdmi->phy.name); + return -ENODEV; + } + + return 0; + } + } + + dev_err(hdmi->dev, "Unsupported HDMI PHY type (%02x)\n", phy_type); + return -ENODEV; +} + +static void dw_hdmi_cec_enable(struct dw_hdmi *hdmi) +{ + mutex_lock(&hdmi->mutex); + hdmi->mc_clkdis &= ~HDMI_MC_CLKDIS_CECCLK_DISABLE; + hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS); + mutex_unlock(&hdmi->mutex); +} + +static void dw_hdmi_cec_disable(struct dw_hdmi *hdmi) +{ + mutex_lock(&hdmi->mutex); + hdmi->mc_clkdis |= HDMI_MC_CLKDIS_CECCLK_DISABLE; + hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS); + mutex_unlock(&hdmi->mutex); +} + +static const struct dw_hdmi_cec_ops dw_hdmi_cec_ops = { + .write = hdmi_writeb, + .read = hdmi_readb, + .enable = dw_hdmi_cec_enable, + .disable = dw_hdmi_cec_disable, +}; + +static const struct regmap_config hdmi_regmap_8bit_config = { + .reg_bits = 32, + .val_bits = 8, + .reg_stride = 1, + .max_register = HDMI_I2CM_FS_SCL_LCNT_0_ADDR, +}; + +static const struct regmap_config hdmi_regmap_32bit_config = { + .reg_bits = 32, + .val_bits = 32, + .reg_stride = 4, + .max_register = HDMI_I2CM_FS_SCL_LCNT_0_ADDR << 2, +}; + +static void dw_hdmi_init_hw(struct dw_hdmi *hdmi) +{ + initialize_hdmi_ih_mutes(hdmi); + + /* + * Reset HDMI DDC I2C master controller and mute I2CM interrupts. + * Even if we are using a separate i2c adapter doing this doesn't + * hurt. + */ + dw_hdmi_i2c_init(hdmi); + + if (hdmi->phy.ops->setup_hpd) + hdmi->phy.ops->setup_hpd(hdmi, hdmi->phy.data); +} + +/* ----------------------------------------------------------------------------- + * Probe/remove API, used from platforms based on the DRM bridge API. + */ + +static int dw_hdmi_parse_dt(struct dw_hdmi *hdmi) +{ + struct device_node *endpoint; + struct device_node *remote; + + if (!hdmi->plat_data->output_port) + return 0; + + endpoint = of_graph_get_endpoint_by_regs(hdmi->dev->of_node, + hdmi->plat_data->output_port, + -1); + if (!endpoint) { + /* + * On platforms whose bindings don't make the output port + * mandatory (such as Rockchip) the plat_data->output_port + * field isn't set, so it's safe to make this a fatal error. + */ + dev_err(hdmi->dev, "Missing endpoint in port@%u\n", + hdmi->plat_data->output_port); + return -ENODEV; + } + + remote = of_graph_get_remote_port_parent(endpoint); + of_node_put(endpoint); + if (!remote) { + dev_err(hdmi->dev, "Endpoint in port@%u unconnected\n", + hdmi->plat_data->output_port); + return -ENODEV; + } + + if (!of_device_is_available(remote)) { + dev_err(hdmi->dev, "port@%u remote device is disabled\n", + hdmi->plat_data->output_port); + of_node_put(remote); + return -ENODEV; + } + + hdmi->next_bridge = of_drm_find_bridge(remote); + of_node_put(remote); + if (!hdmi->next_bridge) + return -EPROBE_DEFER; + + return 0; +} + +struct dw_hdmi *dw_hdmi_probe(struct platform_device *pdev, + const struct dw_hdmi_plat_data *plat_data) +{ + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; + struct platform_device_info pdevinfo; + struct device_node *ddc_node; + struct dw_hdmi_cec_data cec; + struct dw_hdmi *hdmi; + struct resource *iores = NULL; + int irq; + int ret; + u32 val = 1; + u8 prod_id0; + u8 prod_id1; + u8 config0; + u8 config3; + + hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL); + if (!hdmi) + return ERR_PTR(-ENOMEM); + + hdmi->plat_data = plat_data; + hdmi->dev = dev; + hdmi->sample_rate = 48000; + hdmi->channels = 2; + hdmi->disabled = true; + hdmi->rxsense = true; + hdmi->phy_mask = (u8)~(HDMI_PHY_HPD | HDMI_PHY_RX_SENSE); + hdmi->mc_clkdis = 0x7f; + hdmi->last_connector_result = connector_status_disconnected; + + mutex_init(&hdmi->mutex); + mutex_init(&hdmi->audio_mutex); + mutex_init(&hdmi->cec_notifier_mutex); + spin_lock_init(&hdmi->audio_lock); + + ret = dw_hdmi_parse_dt(hdmi); + if (ret < 0) + return ERR_PTR(ret); + + ddc_node = of_parse_phandle(np, "ddc-i2c-bus", 0); + if (ddc_node) { + hdmi->ddc = of_get_i2c_adapter_by_node(ddc_node); + of_node_put(ddc_node); + if (!hdmi->ddc) { + dev_dbg(hdmi->dev, "failed to read ddc node\n"); + return ERR_PTR(-EPROBE_DEFER); + } + + } else { + dev_dbg(hdmi->dev, "no ddc property found\n"); + } + + if (!plat_data->regm) { + const struct regmap_config *reg_config; + + of_property_read_u32(np, "reg-io-width", &val); + switch (val) { + case 4: + reg_config = &hdmi_regmap_32bit_config; + hdmi->reg_shift = 2; + break; + case 1: + reg_config = &hdmi_regmap_8bit_config; + break; + default: + dev_err(dev, "reg-io-width must be 1 or 4\n"); + return ERR_PTR(-EINVAL); + } + + iores = platform_get_resource(pdev, IORESOURCE_MEM, 0); + hdmi->regs = devm_ioremap_resource(dev, iores); + if (IS_ERR(hdmi->regs)) { + ret = PTR_ERR(hdmi->regs); + goto err_res; + } + + hdmi->regm = devm_regmap_init_mmio(dev, hdmi->regs, reg_config); + if (IS_ERR(hdmi->regm)) { + dev_err(dev, "Failed to configure regmap\n"); + ret = PTR_ERR(hdmi->regm); + goto err_res; + } + } else { + hdmi->regm = plat_data->regm; + } + + hdmi->isfr_clk = devm_clk_get(hdmi->dev, "isfr"); + if (IS_ERR(hdmi->isfr_clk)) { + ret = PTR_ERR(hdmi->isfr_clk); + dev_err(hdmi->dev, "Unable to get HDMI isfr clk: %d\n", ret); + goto err_res; + } + + ret = clk_prepare_enable(hdmi->isfr_clk); + if (ret) { + dev_err(hdmi->dev, "Cannot enable HDMI isfr clock: %d\n", ret); + goto err_res; + } + + hdmi->iahb_clk = devm_clk_get(hdmi->dev, "iahb"); + if (IS_ERR(hdmi->iahb_clk)) { + ret = PTR_ERR(hdmi->iahb_clk); + dev_err(hdmi->dev, "Unable to get HDMI iahb clk: %d\n", ret); + goto err_isfr; + } + + ret = clk_prepare_enable(hdmi->iahb_clk); + if (ret) { + dev_err(hdmi->dev, "Cannot enable HDMI iahb clock: %d\n", ret); + goto err_isfr; + } + + hdmi->cec_clk = devm_clk_get(hdmi->dev, "cec"); + if (PTR_ERR(hdmi->cec_clk) == -ENOENT) { + hdmi->cec_clk = NULL; + } else if (IS_ERR(hdmi->cec_clk)) { + ret = PTR_ERR(hdmi->cec_clk); + if (ret != -EPROBE_DEFER) + dev_err(hdmi->dev, "Cannot get HDMI cec clock: %d\n", + ret); + + hdmi->cec_clk = NULL; + goto err_iahb; + } else { + ret = clk_prepare_enable(hdmi->cec_clk); + if (ret) { + dev_err(hdmi->dev, "Cannot enable HDMI cec clock: %d\n", + ret); + goto err_iahb; + } + } + + /* Product and revision IDs */ + hdmi->version = (hdmi_readb(hdmi, HDMI_DESIGN_ID) << 8) + | (hdmi_readb(hdmi, HDMI_REVISION_ID) << 0); + prod_id0 = hdmi_readb(hdmi, HDMI_PRODUCT_ID0); + prod_id1 = hdmi_readb(hdmi, HDMI_PRODUCT_ID1); + + if (prod_id0 != HDMI_PRODUCT_ID0_HDMI_TX || + (prod_id1 & ~HDMI_PRODUCT_ID1_HDCP) != HDMI_PRODUCT_ID1_HDMI_TX) { + dev_err(dev, "Unsupported HDMI controller (%04x:%02x:%02x)\n", + hdmi->version, prod_id0, prod_id1); + ret = -ENODEV; + goto err_iahb; + } + + ret = dw_hdmi_detect_phy(hdmi); + if (ret < 0) + goto err_iahb; + + dev_info(dev, "Detected HDMI TX controller v%x.%03x %s HDCP (%s)\n", + hdmi->version >> 12, hdmi->version & 0xfff, + prod_id1 & HDMI_PRODUCT_ID1_HDCP ? "with" : "without", + hdmi->phy.name); + + dw_hdmi_init_hw(hdmi); + + irq = platform_get_irq(pdev, 0); + if (irq < 0) { + ret = irq; + goto err_iahb; + } + + ret = devm_request_threaded_irq(dev, irq, dw_hdmi_hardirq, + dw_hdmi_irq, IRQF_SHARED, + dev_name(dev), hdmi); + if (ret) + goto err_iahb; + + /* + * To prevent overflows in HDMI_IH_FC_STAT2, set the clk regenerator + * N and cts values before enabling phy + */ + hdmi_init_clk_regenerator(hdmi); + + /* If DDC bus is not specified, try to register HDMI I2C bus */ + if (!hdmi->ddc) { + /* Look for (optional) stuff related to unwedging */ + hdmi->pinctrl = devm_pinctrl_get(dev); + if (!IS_ERR(hdmi->pinctrl)) { + hdmi->unwedge_state = + pinctrl_lookup_state(hdmi->pinctrl, "unwedge"); + hdmi->default_state = + pinctrl_lookup_state(hdmi->pinctrl, "default"); + + if (IS_ERR(hdmi->default_state) || + IS_ERR(hdmi->unwedge_state)) { + if (!IS_ERR(hdmi->unwedge_state)) + dev_warn(dev, + "Unwedge requires default pinctrl\n"); + hdmi->default_state = NULL; + hdmi->unwedge_state = NULL; + } + } + + hdmi->ddc = dw_hdmi_i2c_adapter(hdmi); + if (IS_ERR(hdmi->ddc)) + hdmi->ddc = NULL; + } + + hdmi->bridge.driver_private = hdmi; + hdmi->bridge.funcs = &dw_hdmi_bridge_funcs; + hdmi->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID + | DRM_BRIDGE_OP_HPD; + hdmi->bridge.interlace_allowed = true; +#ifdef CONFIG_OF + hdmi->bridge.of_node = pdev->dev.of_node; +#endif + + memset(&pdevinfo, 0, sizeof(pdevinfo)); + pdevinfo.parent = dev; + pdevinfo.id = PLATFORM_DEVID_AUTO; + + config0 = hdmi_readb(hdmi, HDMI_CONFIG0_ID); + config3 = hdmi_readb(hdmi, HDMI_CONFIG3_ID); + + if (iores && config3 & HDMI_CONFIG3_AHBAUDDMA) { + struct dw_hdmi_audio_data audio; + + audio.phys = iores->start; + audio.base = hdmi->regs; + audio.irq = irq; + audio.hdmi = hdmi; + audio.get_eld = hdmi_audio_get_eld; + hdmi->enable_audio = dw_hdmi_ahb_audio_enable; + hdmi->disable_audio = dw_hdmi_ahb_audio_disable; + + pdevinfo.name = "dw-hdmi-ahb-audio"; + pdevinfo.data = &audio; + pdevinfo.size_data = sizeof(audio); + pdevinfo.dma_mask = DMA_BIT_MASK(32); + hdmi->audio = platform_device_register_full(&pdevinfo); + } else if (config0 & HDMI_CONFIG0_I2S) { + struct dw_hdmi_i2s_audio_data audio; + + audio.hdmi = hdmi; + audio.get_eld = hdmi_audio_get_eld; + audio.write = hdmi_writeb; + audio.read = hdmi_readb; + hdmi->enable_audio = dw_hdmi_i2s_audio_enable; + hdmi->disable_audio = dw_hdmi_i2s_audio_disable; + + pdevinfo.name = "dw-hdmi-i2s-audio"; + pdevinfo.data = &audio; + pdevinfo.size_data = sizeof(audio); + pdevinfo.dma_mask = DMA_BIT_MASK(32); + hdmi->audio = platform_device_register_full(&pdevinfo); + } else if (iores && config3 & HDMI_CONFIG3_GPAUD) { + struct dw_hdmi_audio_data audio; + + audio.phys = iores->start; + audio.base = hdmi->regs; + audio.irq = irq; + audio.hdmi = hdmi; + audio.get_eld = hdmi_audio_get_eld; + + hdmi->enable_audio = dw_hdmi_gp_audio_enable; + hdmi->disable_audio = dw_hdmi_gp_audio_disable; + + pdevinfo.name = "dw-hdmi-gp-audio"; + pdevinfo.id = PLATFORM_DEVID_NONE; + pdevinfo.data = &audio; + pdevinfo.size_data = sizeof(audio); + pdevinfo.dma_mask = DMA_BIT_MASK(32); + hdmi->audio = platform_device_register_full(&pdevinfo); + } + + if (!plat_data->disable_cec && (config0 & HDMI_CONFIG0_CEC)) { + cec.hdmi = hdmi; + cec.ops = &dw_hdmi_cec_ops; + cec.irq = irq; + + pdevinfo.name = "dw-hdmi-cec"; + pdevinfo.data = &cec; + pdevinfo.size_data = sizeof(cec); + pdevinfo.dma_mask = 0; + + hdmi->cec = platform_device_register_full(&pdevinfo); + } + + drm_bridge_add(&hdmi->bridge); + + return hdmi; + +err_iahb: + clk_disable_unprepare(hdmi->iahb_clk); + clk_disable_unprepare(hdmi->cec_clk); +err_isfr: + clk_disable_unprepare(hdmi->isfr_clk); +err_res: + i2c_put_adapter(hdmi->ddc); + + return ERR_PTR(ret); +} +EXPORT_SYMBOL_GPL(dw_hdmi_probe); + +void dw_hdmi_remove(struct dw_hdmi *hdmi) +{ + drm_bridge_remove(&hdmi->bridge); + + if (hdmi->audio && !IS_ERR(hdmi->audio)) + platform_device_unregister(hdmi->audio); + if (!IS_ERR(hdmi->cec)) + platform_device_unregister(hdmi->cec); + + /* Disable all interrupts */ + hdmi_writeb(hdmi, ~0, HDMI_IH_MUTE_PHY_STAT0); + + clk_disable_unprepare(hdmi->iahb_clk); + clk_disable_unprepare(hdmi->isfr_clk); + clk_disable_unprepare(hdmi->cec_clk); + + if (hdmi->i2c) + i2c_del_adapter(&hdmi->i2c->adap); + else + i2c_put_adapter(hdmi->ddc); +} +EXPORT_SYMBOL_GPL(dw_hdmi_remove); + +/* ----------------------------------------------------------------------------- + * Bind/unbind API, used from platforms based on the component framework. + */ +struct dw_hdmi *dw_hdmi_bind(struct platform_device *pdev, + struct drm_encoder *encoder, + const struct dw_hdmi_plat_data *plat_data) +{ + struct dw_hdmi *hdmi; + int ret; + + hdmi = dw_hdmi_probe(pdev, plat_data); + if (IS_ERR(hdmi)) + return hdmi; + + ret = drm_bridge_attach(encoder, &hdmi->bridge, NULL, 0); + if (ret) { + dw_hdmi_remove(hdmi); + return ERR_PTR(ret); + } + + return hdmi; +} +EXPORT_SYMBOL_GPL(dw_hdmi_bind); + +void dw_hdmi_unbind(struct dw_hdmi *hdmi) +{ + dw_hdmi_remove(hdmi); +} +EXPORT_SYMBOL_GPL(dw_hdmi_unbind); + +void dw_hdmi_resume(struct dw_hdmi *hdmi) +{ + dw_hdmi_init_hw(hdmi); +} +EXPORT_SYMBOL_GPL(dw_hdmi_resume); + +MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>"); +MODULE_AUTHOR("Andy Yan <andy.yan@rock-chips.com>"); +MODULE_AUTHOR("Yakir Yang <ykk@rock-chips.com>"); +MODULE_AUTHOR("Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>"); +MODULE_DESCRIPTION("DW HDMI transmitter driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:dw-hdmi"); |