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| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2009-12-09 12:40:10 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-03-22 08:53:19 +0100 |
| commit | 2c0ab67be1b4197a4effac89bb0604832e38be8d (patch) | |
| tree | 033b1d2c6ae25e05f1f46f3c2e7bdb504c359ad3 /include/media | |
| parent | [media] v4l: Add a media_device pointer to the v4l2_device structure (diff) | |
| download | linux-2c0ab67be1b4197a4effac89bb0604832e38be8d.tar.xz linux-2c0ab67be1b4197a4effac89bb0604832e38be8d.zip | |
[media] v4l: Make video_device inherit from media_entity
V4L2 devices are media entities. As such they need to inherit from
(include) the media_entity structure.
When registering/unregistering the device, the media entity is
automatically registered/unregistered. The entity is acquired on device
open and released on device close.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Acked-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'include/media')
| -rw-r--r-- | include/media/v4l2-dev.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/media/v4l2-dev.h b/include/media/v4l2-dev.h index 4fe6831b1851..51b2c515f687 100644 --- a/include/media/v4l2-dev.h +++ b/include/media/v4l2-dev.h @@ -16,6 +16,8 @@ #include <linux/mutex.h> #include <linux/videodev2.h> +#include <media/media-entity.h> + #define VIDEO_MAJOR 81 #define VFL_TYPE_GRABBER 0 @@ -55,6 +57,9 @@ struct v4l2_file_operations { struct video_device { +#if defined(CONFIG_MEDIA_CONTROLLER) + struct media_entity entity; +#endif /* device ops */ const struct v4l2_file_operations *fops; @@ -100,6 +105,8 @@ struct video_device struct mutex *lock; }; +#define media_entity_to_video_device(entity) \ + container_of(entity, struct video_device, entity) /* dev to video-device */ #define to_video_device(cd) container_of(cd, struct video_device, dev) |