drm: rcar-du: Use drm_bridge_connector_init() helper

Use the drm_bridge_connector_init() helper to create a drm_connector for each output, instead of relying on the bridge drivers doing so. Attach the bridges with the DRM_BRIDGE_ATTACH_NO_CONNECTOR flag to instruct them not to create a connector. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Jacopo Mondi <[email protected]> Tested-by: Kieran Bingham <[email protected]> # On V3U Reviewed-by: Kieran Bingham <[email protected]>
zandrey · Jul 28, 2021 · c24110a · c24110a
1 parent d0f44e0
commit c24110a
Showing 1 changed file with 21 additions and 5 deletions.
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_encoder.c b/drivers/gpu/drm/rcar-du/rcar_du_encoder.c
@@ -11,6 +11,7 @@
 #include <linux/slab.h>
 
 #include <drm/drm_bridge.h>
+#include <drm/drm_bridge_connector.h>
 #include <drm/drm_crtc.h>
 #include <drm/drm_managed.h>
 #include <drm/drm_modeset_helper_vtables.h>
@@ -53,7 +54,9 @@ int rcar_du_encoder_init(struct rcar_du_device *rcdu,
 			 struct device_node *enc_node)
 {
 	struct rcar_du_encoder *renc;
+	struct drm_connector *connector;
 	struct drm_bridge *bridge;
+	int ret;
 
 	/*
 	 * Locate the DRM bridge from the DT node. For the DPAD outputs, if the
@@ -103,9 +106,22 @@ int rcar_du_encoder_init(struct rcar_du_device *rcdu,
 
 	renc->output = output;
 
-	/*
-	 * Attach the bridge to the encoder. The bridge will create the
-	 * connector.
-	 */
-	return drm_bridge_attach(&renc->base, bridge, NULL, 0);
+	/* Attach the bridge to the encoder. */
+	ret = drm_bridge_attach(&renc->base, bridge, NULL,
+				DRM_BRIDGE_ATTACH_NO_CONNECTOR);
+	if (ret) {
+		dev_err(rcdu->dev, "failed to attach bridge for output %u\n",
+			output);
+		return ret;
+	}
+
+	/* Create the connector for the chain of bridges. */
+	connector = drm_bridge_connector_init(&rcdu->ddev, &renc->base);
+	if (IS_ERR(connector)) {
+		dev_err(rcdu->dev,
+			"failed to created connector for output %u\n", output);
+		return PTR_ERR(connector);
+	}
+
+	return drm_connector_attach_encoder(connector, &renc->base);
 }