[Intel-gfx] [PATCH v2 1/2] drm: Create new structure for HDMI info

[Shashank Sharma]

This patch creates a new structure drm_hdmi_info (inspired from
drm_display_info). Driver will parse HDMI sink's advance capabilities
from HF-VSDB and populate this structure. This structure will be kept
and used as a sub-class within drm_display_info.

We are adding parsing of HF-VSDB In the next patch.

Cc: Thierry Reding <treding at nvidia.com>
Cc: Daniel Vetter <daniel.vetter at intel.com>
Cc: Jose Abreu <joabreu at synopsys.com>
Suggested-by: Thierry Reding <thierry.reding at gmail.com>
Signed-off-by: Shashank Sharma <shashank.sharma at intel.com>
---
 drivers/gpu/drm/drm_edid.c  |  6 ++--
 include/drm/drm_connector.h | 79 ++++++++++++++++++++++++++++++++++++++++++---
 2 files changed, 77 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 67d6a73..b552197 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -3782,21 +3782,21 @@ static void drm_parse_hdmi_deep_color_info(struct drm_connector *connector,
 
 	if (hdmi[6] & DRM_EDID_HDMI_DC_30) {
 		dc_bpc = 10;
-		info->edid_hdmi_dc_modes |= DRM_EDID_HDMI_DC_30;
+		info->hdmi_info.edid_hdmi_dc_modes |= DRM_EDID_HDMI_DC_30;
 		DRM_DEBUG("%s: HDMI sink does deep color 30.\n",
 			  connector->name);
 	}
 
 	if (hdmi[6] & DRM_EDID_HDMI_DC_36) {
 		dc_bpc = 12;
-		info->edid_hdmi_dc_modes |= DRM_EDID_HDMI_DC_36;
+		info->hdmi_info.edid_hdmi_dc_modes |= DRM_EDID_HDMI_DC_36;
 		DRM_DEBUG("%s: HDMI sink does deep color 36.\n",
 			  connector->name);
 	}
 
 	if (hdmi[6] & DRM_EDID_HDMI_DC_48) {
 		dc_bpc = 16;
-		info->edid_hdmi_dc_modes |= DRM_EDID_HDMI_DC_48;
+		info->hdmi_info.edid_hdmi_dc_modes |= DRM_EDID_HDMI_DC_48;
 		DRM_DEBUG("%s: HDMI sink does deep color 48.\n",
 			  connector->name);
 	}
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index 6e352a0..fba2b88 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -90,6 +90,76 @@ enum subpixel_order {
 };
 
 /**
+ * struct drm_hdmi_info - runtime data specific to a connected hdmi sink
+ *
+ * Describes a given hdmi display (e.g. CRT or flat panel) and its capabilities.
+ * Mostly refects the advanced features added in HDMI 2.0 specs and the deep
+ * color support. This is a sub-segment of struct drm_display_info and should be
+ * used within.
+ *
+ * For sinks which provide an EDID this can be filled out by calling
+ * drm_add_edid_modes().
+ */
+
+struct drm_hdmi_info {
+
+	/**
+	 * @edid_hdmi_dc_modes: Mask of supported hdmi deep color modes. Even
+	 * more stuff redundant with @bus_formats.
+	 */
+	u8 edid_hdmi_dc_modes;
+
+	/**
+	 * @edid_yuv420_dc_modes: bpc for deep color yuv420 encoding.
+	 * various sinks can support 10/12/16 bit per channel deep
+	 * color encoding. edid_yuv420_dc_modes = 0 means sink doesn't
+	 * support deep color yuv420 encoding.
+	 */
+	u8 edid_yuv420_dc_modes;
+
+
+#define DRM_HFVSDB_SCDC_SUPPORT	(1<<7)
+#define DRM_HFVSDB_SCDC_RR_CAP		(1<<6)
+#define DRM_HFVSDB_SCRAMBLING		(1<<3)
+#define DRM_HFVSDB_INDEPENDENT_VIEW	(1<<2)
+#define DRM_HFVSDB_DUAL_VIEW		(1<<1)
+#define DRM_HFVSDB_3D_OSD		(1<<0)
+
+	/**
+	 * @scdc_supported: Sink supports SCDC functionality.
+	 */
+	bool scdc_supported;
+
+	/**
+	 * @scdc_rr_cap: Sink has SCDC read request capability.
+	 */
+	bool scdc_rr_cap;
+
+	/**
+	 * @scrambling: Sync supports scrambling for <=340 Mcsc TMDS
+	 * char rates. Above 340 Mcsc rates, scrambling is always reqd.
+	 */
+	bool scrambling;
+
+	/**
+	 * @independent_view_3d: Sink supports 3d independent view signaling
+	 * in HF-VSIF.
+	 */
+	bool independent_view_3d;
+
+	/**
+	 * @dual_view_3d: Sink supports 3d dual view signaling in HF-VSIF.
+	 */
+	bool dual_view_3d;
+
+	/**
+	 * @osd_disparity_3d: Sink supports 3d osd disparity indication
+	 * in HF-VSIF.
+	 */
+	bool osd_disparity_3d;
+};
+
+/**
  * struct drm_display_info - runtime data about the connected sink
  *
  * Describes a given display (e.g. CRT or flat panel) and its limitations. For
@@ -179,15 +249,14 @@ struct drm_display_info {
 	bool dvi_dual;
 
 	/**
-	 * @edid_hdmi_dc_modes: Mask of supported hdmi deep color modes. Even
-	 * more stuff redundant with @bus_formats.
+	 * @cea_rev: CEA revision of the HDMI sink.
 	 */
-	u8 edid_hdmi_dc_modes;
+	u8 cea_rev;
 
 	/**
-	 * @cea_rev: CEA revision of the HDMI sink.
+	 * @ drm_hdmi_info: Capabilities of connected HDMI display
 	 */
-	u8 cea_rev;
+	struct drm_hdmi_info hdmi_info;
 };
 
 int drm_display_info_set_bus_formats(struct drm_display_info *info,
-- 
1.9.1