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media: video-mux: Create media links in bound notifier
Implement a notifier bound op to register media links from the remote sub-device's source pad(s) to the video-mux sink pad(s). Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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1 changed files with 22 additions and 0 deletions
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@ -17,6 +17,7 @@
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#include <media/v4l2-async.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-fwnode.h>
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#include <media/v4l2-mc.h>
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#include <media/v4l2-subdev.h>
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struct video_mux {
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@ -36,6 +37,12 @@ static const struct v4l2_mbus_framefmt video_mux_format_mbus_default = {
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.field = V4L2_FIELD_NONE,
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};
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static inline struct video_mux *
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notifier_to_video_mux(struct v4l2_async_notifier *n)
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{
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return container_of(n, struct video_mux, notifier);
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}
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static inline struct video_mux *v4l2_subdev_to_video_mux(struct v4l2_subdev *sd)
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{
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return container_of(sd, struct video_mux, subdev);
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@ -332,6 +339,19 @@ static const struct v4l2_subdev_ops video_mux_subdev_ops = {
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.video = &video_mux_subdev_video_ops,
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};
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static int video_mux_notify_bound(struct v4l2_async_notifier *notifier,
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struct v4l2_subdev *sd,
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struct v4l2_async_subdev *asd)
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{
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struct video_mux *vmux = notifier_to_video_mux(notifier);
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return v4l2_create_fwnode_links(sd, &vmux->subdev);
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}
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static const struct v4l2_async_notifier_operations video_mux_notify_ops = {
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.bound = video_mux_notify_bound,
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};
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static int video_mux_async_register(struct video_mux *vmux,
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unsigned int num_input_pads)
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{
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@ -369,6 +389,8 @@ static int video_mux_async_register(struct video_mux *vmux,
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}
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}
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vmux->notifier.ops = &video_mux_notify_ops;
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ret = v4l2_async_subdev_notifier_register(&vmux->subdev,
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&vmux->notifier);
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if (ret)
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