drm/edid: Fix serdes black screen issue

Force to get serdes edid to fix black screen issue due to don`t use DDC Test-done: Android boot and backlight/motor tested with panel EF1E-A1 Tracked-On: OAM-115780 Signed-off-by: Jia, Lin A <[email protected]>
projectceladon · Mar 6, 2024 · 38e39b9 · 38e39b9
1 parent 32511af
commit 38e39b9
Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
@@ -2550,8 +2550,12 @@ struct edid *drm_get_edid(struct drm_connector *connector,
 	if (connector->force == DRM_FORCE_OFF)
 		return NULL;
 
-	if (connector->force == DRM_FORCE_UNSPECIFIED && !drm_probe_ddc(adapter))
-		return NULL;
+	if (connector->force == DRM_FORCE_UNSPECIFIED && !drm_probe_ddc(adapter)) {
+		if ((connector->status == connector_status_connected) &&
+			 (strcmp(connector->name, "DP-3") != 0)) {
+			return NULL;
+		}
+	}
 
 	edid = _drm_do_get_edid(connector, drm_do_probe_ddc_edid, adapter, NULL);
 	drm_connector_update_edid_property(connector, edid);