drm: parse color format support for digital displays
EDID 1.4 digital displays report the color spaces they support in the
features block. Add support for grabbing this data and stuffing it into
the display_info struct for driver use.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h
index 9b9bf94..eacb415 100644
--- a/include/drm/drm_edid.h
+++ b/include/drm/drm_edid.h
@@ -175,7 +175,15 @@
#define DRM_EDID_FEATURE_DEFAULT_GTF (1 << 0)
#define DRM_EDID_FEATURE_PREFERRED_TIMING (1 << 1)
#define DRM_EDID_FEATURE_STANDARD_COLOR (1 << 2)
+/* If analog */
#define DRM_EDID_FEATURE_DISPLAY_TYPE (3 << 3) /* 00=mono, 01=rgb, 10=non-rgb, 11=unknown */
+/* If digital */
+#define DRM_EDID_FEATURE_COLOR_MASK (3 << 3)
+#define DRM_EDID_FEATURE_RGB (0 << 3)
+#define DRM_EDID_FEATURE_RGB_YCRCB444 (1 << 3)
+#define DRM_EDID_FEATURE_RGB_YCRCB422 (2 << 3)
+#define DRM_EDID_FEATURE_RGB_YCRCB (3 << 3) /* both 4:4:4 and 4:2:2 */
+
#define DRM_EDID_FEATURE_PM_ACTIVE_OFF (1 << 5)
#define DRM_EDID_FEATURE_PM_SUSPEND (1 << 6)
#define DRM_EDID_FEATURE_PM_STANDBY (1 << 7)