drm/tilcdc: Use devm_drm_of_get_bridge() helper

Replace drm_of_find_panel_or_bridge() with the newer
devm_drm_of_get_bridge() helper which simplifies the code by:
- Automatically handling both panel and bridge cases internally
- Managing the panel-to-bridge conversion when needed
- Using devres for resource management, eliminating manual cleanup

This removes the need for explicit panel-to-bridge conversion via
devm_drm_panel_bridge_add_typed() and the associated error handling path.

Signed-off-by: Kory Maincent (TI.com) <kory.maincent@bootlin.com>
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Link: https://patch.msgid.link/20260123-feature_tilcdc-v5-20-5a44d2aa3f6f@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>

diff --git a/drivers/gpu/drm/tilcdc/tilcdc_encoder.c b/drivers/gpu/drm/tilcdc/tilcdc_encoder.c
index a34a10337f6a867cc68e5cdbcda424da8224e680..546fe7e6ee815bddd5673abcd0eca0b206ec3a0a 100644 (file)
--- a/drivers/gpu/drm/tilcdc/tilcdc_encoder.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_encoder.c
@@ -55,15 +55,12 @@ int tilcdc_encoder_create(struct drm_device *ddev)
        struct tilcdc_drm_private *priv = ddev_to_tilcdc_priv(ddev);
        struct tilcdc_encoder *encoder;
        struct drm_bridge *bridge;
-       struct drm_panel *panel;
-       int ret;
 
-       ret = drm_of_find_panel_or_bridge(ddev->dev->of_node, 0, 0,
-                                         &panel, &bridge);
-       if (ret == -ENODEV)
+       bridge = devm_drm_of_get_bridge(ddev->dev, ddev->dev->of_node, 0, 0);
+       if (PTR_ERR(bridge) == -ENODEV)
                return 0;
-       else if (ret)
-               return ret;
+       else if (IS_ERR(bridge))
+               return PTR_ERR(bridge);
 
        encoder = drmm_simple_encoder_alloc(ddev, struct tilcdc_encoder,
                                            base, DRM_MODE_ENCODER_NONE);
@@ -73,12 +70,5 @@ int tilcdc_encoder_create(struct drm_device *ddev)
        }
        priv->encoder = encoder;
 
-       if (panel) {
-               bridge = devm_drm_panel_bridge_add_typed(ddev->dev, panel,
-                                                        DRM_MODE_CONNECTOR_DPI);
-               if (IS_ERR(bridge))
-                       return PTR_ERR(bridge);
-       }
-
        return tilcdc_attach_bridge(ddev, bridge);
 }