static int csi_get_upstream_endpoint(struct csi_priv *priv,
struct v4l2_fwnode_endpoint *ep)
{
- struct device_node *endpoint, *port;
+ struct fwnode_handle *endpoint;
struct v4l2_subdev *sd;
struct media_pad *pad;
if (!pad)
return -ENODEV;
- sd = media_entity_to_v4l2_subdev(pad->entity);
+ endpoint = imx_media_get_pad_fwnode(pad);
+ if (IS_ERR(endpoint))
+ return PTR_ERR(endpoint);
- /*
- * NOTE: this assumes an OF-graph port id is the same as a
- * media pad index.
- */
- port = of_graph_get_port_by_id(sd->dev->of_node, pad->index);
- if (!port)
- return -ENODEV;
-
- endpoint = of_get_next_child(port, NULL);
- of_node_put(port);
- if (!endpoint)
- return -ENODEV;
+ v4l2_fwnode_endpoint_parse(endpoint, ep);
- v4l2_fwnode_endpoint_parse(of_fwnode_handle(endpoint), ep);
- of_node_put(endpoint);
+ fwnode_handle_put(endpoint);
return 0;
}
EXPORT_SYMBOL_GPL(imx_media_pipeline_video_device);
/*
+ * Find a fwnode endpoint that maps to the given subdevice's pad.
+ * If there are multiple endpoints that map to the pad, only the
+ * first endpoint encountered is returned.
+ *
+ * On success the refcount of the returned fwnode endpoint is
+ * incremented.
+ */
+struct fwnode_handle *imx_media_get_pad_fwnode(struct media_pad *pad)
+{
+ struct fwnode_handle *endpoint;
+ struct v4l2_subdev *sd;
+
+ if (!is_media_entity_v4l2_subdev(pad->entity))
+ return ERR_PTR(-ENODEV);
+
+ sd = media_entity_to_v4l2_subdev(pad->entity);
+
+ fwnode_graph_for_each_endpoint(dev_fwnode(sd->dev), endpoint) {
+ int pad_idx = media_entity_get_fwnode_pad(&sd->entity,
+ endpoint,
+ pad->flags);
+ if (pad_idx < 0)
+ continue;
+
+ if (pad_idx == pad->index)
+ return endpoint;
+ }
+
+ return ERR_PTR(-ENODEV);
+}
+EXPORT_SYMBOL_GPL(imx_media_get_pad_fwnode);
+
+/*
* Turn current pipeline streaming on/off starting from entity.
*/
int imx_media_pipeline_set_stream(struct imx_media_dev *imxmd,
struct video_device *
imx_media_pipeline_video_device(struct media_entity *start_entity,
enum v4l2_buf_type buftype, bool upstream);
+struct fwnode_handle *imx_media_get_pad_fwnode(struct media_pad *pad);
struct imx_media_dma_buf {
void *virt;