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/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index fe0d3dc..0a9357c 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -1429,6 +1429,7 @@
/* driver figures it out in this case */
info->bpc = 0;
+ info->color_formats = 0;
/* Only defined for 1.4 with digital displays */
if (edid->revision < 4)
@@ -1461,6 +1462,12 @@
info->bpc = 0;
break;
}
+
+ info->color_formats = DRM_COLOR_FORMAT_RGB444;
+ if (info->color_formats & DRM_EDID_FEATURE_RGB_YCRCB444)
+ info->color_formats = DRM_COLOR_FORMAT_YCRCB444;
+ if (info->color_formats & DRM_EDID_FEATURE_RGB_YCRCB422)
+ info->color_formats = DRM_COLOR_FORMAT_YCRCB422;
}
/**