[PATCH v6.1 2/4] drm: bridge: dw-hdmi: Switch to V4L bus format and encodings

[Neil Armstrong <narmstrong@baylibre.com>]

Switch code to use the newly introduced V4L bus formats IDs instead of custom
defines. Also use the V4L encoding defines.

Some display pipelines can only provide non-RBG input pixels to the HDMI TX
Controller, this patch takes the pixel format from the plat_data if provided.

Reviewed-by: Jose Abreu <joabreu@synopsys.com>
Reviewed-by: Archit Taneja <architt@codeaurora.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
---
 drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 326 +++++++++++++++++++++---------
 include/drm/bridge/dw_hdmi.h              |  63 ++++++
 2 files changed, 294 insertions(+), 95 deletions(-)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index ff1fae3..16d5fff3 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -30,18 +30,15 @@
 #include <drm/drm_encoder_slave.h>
 #include <drm/bridge/dw_hdmi.h>
 
+#include <uapi/linux/media-bus-format.h>
+#include <uapi/linux/videodev2.h>
+
 #include "dw-hdmi.h"
 #include "dw-hdmi-audio.h"
 
 #define DDC_SEGMENT_ADDR	0x30
 #define HDMI_EDID_LEN		512
 
-#define RGB			0
-#define YCBCR444		1
-#define YCBCR422_16BITS		2
-#define YCBCR422_8BITS		3
-#define XVYCC444		4
-
 enum hdmi_datamap {
 	RGB444_8B = 0x01,
 	RGB444_10B = 0x03,
@@ -95,10 +92,10 @@ struct hdmi_vmode {
 };
 
 struct hdmi_data_info {
-	unsigned int enc_in_format;
-	unsigned int enc_out_format;
-	unsigned int enc_color_depth;
-	unsigned int colorimetry;
+	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;
@@ -567,6 +564,92 @@ void dw_hdmi_audio_disable(struct dw_hdmi *hdmi)
 }
 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
@@ -579,37 +662,49 @@ static void hdmi_video_sample(struct dw_hdmi *hdmi)
 	int color_format = 0;
 	u8 val;
 
-	if (hdmi->hdmi_data.enc_in_format == RGB) {
-		if (hdmi->hdmi_data.enc_color_depth == 8)
-			color_format = 0x01;
-		else if (hdmi->hdmi_data.enc_color_depth == 10)
-			color_format = 0x03;
-		else if (hdmi->hdmi_data.enc_color_depth == 12)
-			color_format = 0x05;
-		else if (hdmi->hdmi_data.enc_color_depth == 16)
-			color_format = 0x07;
-		else
-			return;
-	} else if (hdmi->hdmi_data.enc_in_format == YCBCR444) {
-		if (hdmi->hdmi_data.enc_color_depth == 8)
-			color_format = 0x09;
-		else if (hdmi->hdmi_data.enc_color_depth == 10)
-			color_format = 0x0B;
-		else if (hdmi->hdmi_data.enc_color_depth == 12)
-			color_format = 0x0D;
-		else if (hdmi->hdmi_data.enc_color_depth == 16)
-			color_format = 0x0F;
-		else
-			return;
-	} else if (hdmi->hdmi_data.enc_in_format == YCBCR422_8BITS) {
-		if (hdmi->hdmi_data.enc_color_depth == 8)
-			color_format = 0x16;
-		else if (hdmi->hdmi_data.enc_color_depth == 10)
-			color_format = 0x14;
-		else if (hdmi->hdmi_data.enc_color_depth == 12)
-			color_format = 0x12;
-		else
-			return;
+	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 |
@@ -632,26 +727,30 @@ static void hdmi_video_sample(struct dw_hdmi *hdmi)
 
 static int is_color_space_conversion(struct dw_hdmi *hdmi)
 {
-	return hdmi->hdmi_data.enc_in_format != hdmi->hdmi_data.enc_out_format;
+	return hdmi->hdmi_data.enc_in_bus_format != hdmi->hdmi_data.enc_out_bus_format;
 }
 
 static int is_color_space_decimation(struct dw_hdmi *hdmi)
 {
-	if (hdmi->hdmi_data.enc_out_format != YCBCR422_8BITS)
+	if (!hdmi_bus_fmt_is_yuv422(hdmi->hdmi_data.enc_out_bus_format))
 		return 0;
-	if (hdmi->hdmi_data.enc_in_format == RGB ||
-	    hdmi->hdmi_data.enc_in_format == YCBCR444)
+
+	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->hdmi_data.enc_in_format != YCBCR422_8BITS)
+	if (!hdmi_bus_fmt_is_yuv422(hdmi->hdmi_data.enc_in_bus_format))
 		return 0;
-	if (hdmi->hdmi_data.enc_out_format == RGB ||
-	    hdmi->hdmi_data.enc_out_format == YCBCR444)
+
+	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;
 }
 
@@ -662,15 +761,16 @@ static void dw_hdmi_update_csc_coeffs(struct dw_hdmi *hdmi)
 	u32 csc_scale = 1;
 
 	if (is_color_space_conversion(hdmi)) {
-		if (hdmi->hdmi_data.enc_out_format == RGB) {
-			if (hdmi->hdmi_data.colorimetry ==
-					HDMI_COLORIMETRY_ITU_601)
+		if (hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_out_bus_format)) {
+			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 (hdmi->hdmi_data.enc_in_format == RGB) {
-			if (hdmi->hdmi_data.colorimetry ==
-					HDMI_COLORIMETRY_ITU_601)
+		} else if (hdmi_bus_fmt_is_rgb(
+					hdmi->hdmi_data.enc_in_bus_format)) {
+			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;
@@ -708,16 +808,23 @@ static void hdmi_video_csc(struct dw_hdmi *hdmi)
 	else if (is_color_space_decimation(hdmi))
 		decimation = HDMI_CSC_CFG_DECMODE_CHROMA_INT_FORMULA3;
 
-	if (hdmi->hdmi_data.enc_color_depth == 8)
+	switch (hdmi_bus_fmt_color_depth(hdmi->hdmi_data.enc_out_bus_format)) {
+	case 8:
 		color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_24BPP;
-	else if (hdmi->hdmi_data.enc_color_depth == 10)
+		break;
+	case 10:
 		color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_30BPP;
-	else if (hdmi->hdmi_data.enc_color_depth == 12)
+		break;
+	case 12:
 		color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_36BPP;
-	else if (hdmi->hdmi_data.enc_color_depth == 16)
+		break;
+	case 16:
 		color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_48BPP;
-	else
+		break;
+
+	default:
 		return;
+	}
 
 	/* Configure the CSC registers */
 	hdmi_writeb(hdmi, interpolation | decimation, HDMI_CSC_CFG);
@@ -740,32 +847,43 @@ static void hdmi_video_packetize(struct dw_hdmi *hdmi)
 	struct hdmi_data_info *hdmi_data = &hdmi->hdmi_data;
 	u8 val, vp_conf;
 
-	if (hdmi_data->enc_out_format == RGB ||
-	    hdmi_data->enc_out_format == YCBCR444) {
-		if (!hdmi_data->enc_color_depth) {
-			output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS;
-		} else if (hdmi_data->enc_color_depth == 8) {
+	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)) {
+		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;
-		} else if (hdmi_data->enc_color_depth == 10) {
+			break;
+		case 10:
 			color_depth = 5;
-		} else if (hdmi_data->enc_color_depth == 12) {
+			break;
+		case 12:
 			color_depth = 6;
-		} else if (hdmi_data->enc_color_depth == 16) {
+			break;
+		case 16:
 			color_depth = 7;
-		} else {
-			return;
+			break;
+		default:
+			output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS;
 		}
-	} else if (hdmi_data->enc_out_format == YCBCR422_8BITS) {
-		if (!hdmi_data->enc_color_depth ||
-		    hdmi_data->enc_color_depth == 8)
+	} 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;
-		else if (hdmi_data->enc_color_depth == 10)
+			break;
+		case 10:
 			remap_size = HDMI_VP_REMAP_YCC422_20bit;
-		else if (hdmi_data->enc_color_depth == 12)
+			break;
+		case 12:
 			remap_size = HDMI_VP_REMAP_YCC422_24bit;
-		else
+			break;
+
+		default:
 			return;
+		}
 		output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_YCC422;
 	} else {
 		return;
@@ -1148,28 +1266,35 @@ static void hdmi_config_AVI(struct dw_hdmi *hdmi, struct drm_display_mode *mode)
 	/* Initialise info frame from DRM mode */
 	drm_hdmi_avi_infoframe_from_display_mode(&frame, mode);
 
-	if (hdmi->hdmi_data.enc_out_format == YCBCR444)
+	if (hdmi_bus_fmt_is_yuv444(hdmi->hdmi_data.enc_out_bus_format))
 		frame.colorspace = HDMI_COLORSPACE_YUV444;
-	else if (hdmi->hdmi_data.enc_out_format == YCBCR422_8BITS)
+	else if (hdmi_bus_fmt_is_yuv422(hdmi->hdmi_data.enc_out_bus_format))
 		frame.colorspace = HDMI_COLORSPACE_YUV422;
 	else
 		frame.colorspace = HDMI_COLORSPACE_RGB;
 
 	/* Set up colorimetry */
-	if (hdmi->hdmi_data.enc_out_format == XVYCC444) {
-		frame.colorimetry = HDMI_COLORIMETRY_EXTENDED;
-		if (hdmi->hdmi_data.colorimetry == HDMI_COLORIMETRY_ITU_601)
-			frame.extended_colorimetry =
+	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;
-		else /*hdmi->hdmi_data.colorimetry == HDMI_COLORIMETRY_ITU_709*/
-			frame.extended_colorimetry =
+	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;
-	} else if (hdmi->hdmi_data.enc_out_format != RGB) {
-		frame.colorimetry = hdmi->hdmi_data.colorimetry;
-		frame.extended_colorimetry = HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
-	} else { /* Carries no data */
-		frame.colorimetry = HDMI_COLORIMETRY_NONE;
-		frame.extended_colorimetry = HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
+		break;
+	default: /* Carries no data */
+		frame.colorimetry = HDMI_COLORIMETRY_ITU_601;
+		frame.extended_colorimetry =
+				HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
+		break;
 	}
 
 	frame.scan_mode = HDMI_SCAN_MODE_NONE;
@@ -1498,19 +1623,30 @@ static int dw_hdmi_setup(struct dw_hdmi *hdmi, struct drm_display_mode *mode)
 	    (hdmi->vic == 21) || (hdmi->vic == 22) ||
 	    (hdmi->vic == 2) || (hdmi->vic == 3) ||
 	    (hdmi->vic == 17) || (hdmi->vic == 18))
-		hdmi->hdmi_data.colorimetry = HDMI_COLORIMETRY_ITU_601;
+		hdmi->hdmi_data.enc_out_encoding = V4L2_YCBCR_ENC_601;
 	else
-		hdmi->hdmi_data.colorimetry = HDMI_COLORIMETRY_ITU_709;
+		hdmi->hdmi_data.enc_out_encoding = V4L2_YCBCR_ENC_709;
 
 	hdmi->hdmi_data.video_mode.mpixelrepetitionoutput = 0;
 	hdmi->hdmi_data.video_mode.mpixelrepetitioninput = 0;
 
-	/* TODO: Get input format from IPU (via FB driver interface) */
-	hdmi->hdmi_data.enc_in_format = RGB;
+	/* TOFIX: Get input format from plat data or fallback to RGB888 */
+	if (hdmi->plat_data->input_bus_format >= 0)
+		hdmi->hdmi_data.enc_in_bus_format =
+			hdmi->plat_data->input_bus_format;
+	else
+		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 >= 0)
+		hdmi->hdmi_data.enc_in_encoding =
+			hdmi->plat_data->input_bus_encoding;
+	else
+		hdmi->hdmi_data.enc_in_encoding = V4L2_YCBCR_ENC_DEFAULT;
 
-	hdmi->hdmi_data.enc_out_format = RGB;
+	/* TOFIX: Default to RGB888 output format */
+	hdmi->hdmi_data.enc_out_bus_format = MEDIA_BUS_FMT_RGB888_1X24;
 
-	hdmi->hdmi_data.enc_color_depth = 8;
 	hdmi->hdmi_data.pix_repet_factor = 0;
 	hdmi->hdmi_data.hdcp_enable = 0;
 	hdmi->hdmi_data.video_mode.mdataenablepolarity = true;
diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h
index bcceee8..5d6b92c 100644
--- a/include/drm/bridge/dw_hdmi.h
+++ b/include/drm/bridge/dw_hdmi.h
@@ -14,6 +14,67 @@
 
 struct dw_hdmi;
 
+/**
+ * DOC: Supported input formats and encodings
+ *
+ * Depending on the Hardware configuration of the Controller IP, it supports
+ * a subset of the following input formats and encodings on its internal
+ * 48bit bus.
+ *
+ * +----------------------+----------------------------------+------------------------------+
+ * + Format Name          + Format Code                      + Encodings                    +
+ * +----------------------+----------------------------------+------------------------------+
+ * + RGB 4:4:4 8bit       + ``MEDIA_BUS_FMT_RGB888_1X24``    + ``V4L2_YCBCR_ENC_DEFAULT``   +
+ * +----------------------+----------------------------------+------------------------------+
+ * + RGB 4:4:4 10bits     + ``MEDIA_BUS_FMT_RGB101010_1X30`` + ``V4L2_YCBCR_ENC_DEFAULT``   +
+ * +----------------------+----------------------------------+------------------------------+
+ * + RGB 4:4:4 12bits     + ``MEDIA_BUS_FMT_RGB121212_1X36`` + ``V4L2_YCBCR_ENC_DEFAULT``   +
+ * +----------------------+----------------------------------+------------------------------+
+ * + RGB 4:4:4 16bits     + ``MEDIA_BUS_FMT_RGB161616_1X48`` + ``V4L2_YCBCR_ENC_DEFAULT``   +
+ * +----------------------+----------------------------------+------------------------------+
+ * + YCbCr 4:4:4 8bit     + ``MEDIA_BUS_FMT_YUV8_1X24``      + ``V4L2_YCBCR_ENC_601``       +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_709``    +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_XV601``  +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_XV709``  +
+ * +----------------------+----------------------------------+------------------------------+
+ * + YCbCr 4:4:4 10bits   + ``MEDIA_BUS_FMT_YUV10_1X30``     + ``V4L2_YCBCR_ENC_601``       +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_709``    +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_XV601``  +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_XV709``  +
+ * +----------------------+----------------------------------+------------------------------+
+ * + YCbCr 4:4:4 12bits   + ``MEDIA_BUS_FMT_YUV12_1X36``     + ``V4L2_YCBCR_ENC_601``       +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_709``    +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_XV601``  +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_XV709``  +
+ * +----------------------+----------------------------------+------------------------------+
+ * + YCbCr 4:4:4 16bits   + ``MEDIA_BUS_FMT_YUV16_1X48``     + ``V4L2_YCBCR_ENC_601``       +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_709``    +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_XV601``  +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_XV709``  +
+ * +----------------------+----------------------------------+------------------------------+
+ * + YCbCr 4:2:2 8bit     + ``MEDIA_BUS_FMT_UYVY8_1X16``     + ``V4L2_YCBCR_ENC_601``       +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_709``    +
+ * +----------------------+----------------------------------+------------------------------+
+ * + YCbCr 4:2:2 10bits   + ``MEDIA_BUS_FMT_UYVY10_1X20``    + ``V4L2_YCBCR_ENC_601``       +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_709``    +
+ * +----------------------+----------------------------------+------------------------------+
+ * + YCbCr 4:2:2 12bits   + ``MEDIA_BUS_FMT_UYVY12_1X24``    + ``V4L2_YCBCR_ENC_601``       +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_709``    +
+ * +----------------------+----------------------------------+------------------------------+
+ * + YCbCr 4:2:0 8bit     + ``MEDIA_BUS_FMT_UYYVYY8_0_5X24`` + ``V4L2_YCBCR_ENC_601``       +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_709``    +
+ * +----------------------+----------------------------------+------------------------------+
+ * + YCbCr 4:2:0 10bits   + ``MEDIA_BUS_FMT_UYYVYY10_0_5X30``+ ``V4L2_YCBCR_ENC_601``       +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_709``    +
+ * +----------------------+----------------------------------+------------------------------+
+ * + YCbCr 4:2:0 12bits   + ``MEDIA_BUS_FMT_UYYVYY12_0_5X36``+ ``V4L2_YCBCR_ENC_601``       +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_709``    +
+ * +----------------------+----------------------------------+------------------------------+
+ * + YCbCr 4:2:0 16bits   + ``MEDIA_BUS_FMT_UYYVYY16_0_5X48``+ ``V4L2_YCBCR_ENC_601``       +
+ * +                      +                                  + or ``V4L2_YCBCR_ENC_709``    +
+ * +----------------------+----------------------------------+------------------------------+
+ */
+
 enum {
 	DW_HDMI_RES_8,
 	DW_HDMI_RES_10,
@@ -62,6 +123,8 @@ struct dw_hdmi_plat_data {
 	struct regmap *regm;
 	enum drm_mode_status (*mode_valid)(struct drm_connector *connector,
 					   struct drm_display_mode *mode);
+	unsigned long input_bus_format;
+	unsigned long input_bus_encoding;
 
 	/* Vendor PHY support */
 	const struct dw_hdmi_phy_ops *phy_ops;
-- 
1.9.1