disp: msm: dp: populate supported colorspace property for DP

Populate the supported colorspaces property for DP
as part of getting the display modes.

This will expose the supported colorspaces of the sink to
userspace and in-turn the userspace shall pick the colorspace
suitable for the use-case.

Change-Id: I70408c719610bc63f9c06dad8cd50f7fa5d94908
Signed-off-by: Abhinav Kumar <[email protected]>

msm/dp/dp_display.c

@@ -1676,6 +1676,14 @@ end:
 	return 0;
 }
 
+static void dp_display_clear_colorspaces(struct dp_display *dp_display)
+{
+	struct drm_connector *connector;
+
+	connector = dp_display->base_connector;
+	connector->color_enc_fmt = 0;
+}
+
 static int dp_display_pre_disable(struct dp_display *dp_display, void *panel)
 {
 	struct dp_display_private *dp;
@@ -1732,6 +1740,8 @@ static int dp_display_pre_disable(struct dp_display *dp_display, void *panel)
 		}
 	}
 
+	dp_display_clear_colorspaces(dp_display);
+
 clean:
 	if (dp_panel->audio_supported)
 		dp_panel->audio->off(dp_panel->audio);

msm/msm_drv.h

@@ -190,6 +190,7 @@ enum msm_mdp_conn_property {
 	CONNECTOR_PROP_ROI_V1,
 	CONNECTOR_PROP_BL_SCALE,
 	CONNECTOR_PROP_SV_BL_SCALE,
+	CONNECTOR_PROP_SUPPORTED_COLORSPACES,
 
 	/* enum/bitmask properties */
 	CONNECTOR_PROP_TOPOLOGY_NAME,

msm/sde/sde_connector.c

@@ -1480,6 +1480,20 @@ static void sde_connector_update_hdr_props(struct drm_connector *connector)
 			&hdr, sizeof(hdr), CONNECTOR_PROP_EXT_HDR_INFO);
 }
 
+static void sde_connector_update_colorspace(struct drm_connector *connector)
+{
+	int ret;
+
+	ret = msm_property_set_property(
+			sde_connector_get_propinfo(connector),
+			sde_connector_get_property_state(connector->state),
+			CONNECTOR_PROP_SUPPORTED_COLORSPACES,
+				connector->color_enc_fmt);
+
+	if (ret)
+		SDE_ERROR("failed to set colorspace property for connector\n");
+}
+
 static enum drm_connector_status
 sde_connector_detect(struct drm_connector *connector, bool force)
 {
@@ -1919,6 +1933,9 @@ static int sde_connector_get_modes(struct drm_connector *connector)
 	if (c_conn->hdr_capable)
 		sde_connector_update_hdr_props(connector);
 
+	if (c_conn->connector_type == DRM_MODE_CONNECTOR_DisplayPort)
+		sde_connector_update_colorspace(connector);
+
 	return mode_count;
 }
 
@@ -2388,6 +2405,12 @@ static int _sde_connector_install_properties(struct drm_device *dev,
 	c_conn->bl_scale = MAX_BL_SCALE_LEVEL;
 	c_conn->bl_scale_sv = MAX_SV_BL_SCALE_LEVEL;
 
+	if (connector_type == DRM_MODE_CONNECTOR_DisplayPort)
+		msm_property_install_range(&c_conn->property_info,
+			"supported_colorspaces",
+			DRM_MODE_PROP_IMMUTABLE, 0, 0xffff, 0,
+			CONNECTOR_PROP_SUPPORTED_COLORSPACES);
+
 	/* enum/bitmask properties */
 	msm_property_install_enum(&c_conn->property_info, "topology_name",
 			DRM_MODE_PROP_IMMUTABLE, 0, e_topology_name,