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| author | Hans Verkuil <hverkuil@xs4all.nl> | 2009-03-08 17:02:10 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-03-30 12:43:20 -0300 |
| commit | 98ec633972a70cf71d71bc8762804f0af4792d08 (patch) | |
| tree | 8f924a6d5804b56a24a58a1e60ea69d53996ece7 /include/media | |
| parent | 005759613b95264fba9138010f112bc138c857c2 (diff) | |
| download | linux-3.10-98ec633972a70cf71d71bc8762804f0af4792d08.tar.gz linux-3.10-98ec633972a70cf71d71bc8762804f0af4792d08.tar.bz2 linux-3.10-98ec633972a70cf71d71bc8762804f0af4792d08.zip | |
V4L/DVB (11021): v4l2-device: add a notify callback.
Add a notify callback to v4l2_device to let sub-devices notify their
parent of special events.
Signed-off-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-device.h | 3 | ||||
| -rw-r--r-- | include/media/v4l2-subdev.h | 5 |
2 files changed, 8 insertions, 0 deletions
diff --git a/include/media/v4l2-device.h b/include/media/v4l2-device.h index 5d7146dc291..3d8e96f6ceb 100644 --- a/include/media/v4l2-device.h +++ b/include/media/v4l2-device.h @@ -44,6 +44,9 @@ struct v4l2_device { spinlock_t lock; /* unique device name, by default the driver name + bus ID */ char name[V4L2_DEVICE_NAME_SIZE]; + /* notify callback called by some sub-devices. */ + void (*notify)(struct v4l2_subdev *sd, + unsigned int notification, void *arg); }; /* Initialize v4l2_dev and make dev->driver_data point to v4l2_dev. diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h index 05b69652e6c..1b97a2c33a7 100644 --- a/include/media/v4l2-subdev.h +++ b/include/media/v4l2-subdev.h @@ -191,4 +191,9 @@ static inline void v4l2_subdev_init(struct v4l2_subdev *sd, (!(sd) ? -ENODEV : (((sd) && (sd)->ops->o && (sd)->ops->o->f) ? \ (sd)->ops->o->f((sd) , ##args) : -ENOIOCTLCMD)) +/* Send a notification to v4l2_device. */ +#define v4l2_subdev_notify(sd, notification, arg) \ + ((!(sd) || !(sd)->v4l2_dev || !(sd)->v4l2_dev->notify) ? -ENODEV : \ + (sd)->v4l2_dev->notify((sd), (notification), (arg))) + #endif |