Implement a notifier bound op to register media links from the remote
sub-device's source pads to all of the video-mux sink pads.
Signed-off-by: Steve Longerbeam <slongerbeam@xxxxxxxxx>
---
drivers/media/platform/video-mux.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/drivers/media/platform/video-mux.c b/drivers/media/platform/video-mux.c
index ca1cef783646..de5b0698fc1d 100644
--- a/drivers/media/platform/video-mux.c
+++ b/drivers/media/platform/video-mux.c
@@ -36,6 +36,12 @@ static const struct v4l2_mbus_framefmt video_mux_format_mbus_default = {
.field = V4L2_FIELD_NONE,
};
+static inline struct video_mux *
+notifier_to_video_mux(struct v4l2_async_notifier *n)
+{
+ return container_of(n, struct video_mux, notifier);
+}
+
static inline struct video_mux *v4l2_subdev_to_video_mux(struct v4l2_subdev *sd)
{
return container_of(sd, struct video_mux, subdev);
@@ -343,6 +349,22 @@ static int video_mux_parse_endpoint(struct device *dev,
return fwnode_device_is_available(asd->match.fwnode) ? 0 : -ENOTCONN;
}
+static int video_mux_notify_bound(struct v4l2_async_notifier *notifier,
+ struct v4l2_subdev *sd,
+ struct v4l2_async_subdev *asd)
+{
+ struct video_mux *vmux = notifier_to_video_mux(notifier);
+
+ return media_create_fwnode_links(&vmux->subdev.entity,
+ dev_fwnode(vmux->subdev.dev),
+ &sd->entity,
+ dev_fwnode(sd->dev), 0);
+}
+
+static const struct v4l2_async_notifier_operations video_mux_notify_ops = {
+ .bound = video_mux_notify_bound,
+};
+
static int video_mux_async_register(struct video_mux *vmux,
unsigned int num_input_pads)
{
@@ -357,6 +379,8 @@ static int video_mux_async_register(struct video_mux *vmux,
v4l2_async_notifier_init(&vmux->notifier);
+ vmux->notifier.ops = &video_mux_notify_ops;
+
ret = v4l2_async_register_fwnode_subdev(
&vmux->subdev, &vmux->notifier,
sizeof(struct v4l2_async_subdev),
--
2.17.1
