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>
diff --git a/include/media/v4l2-device.h b/include/media/v4l2-device.h
index 5d7146d..3d8e96f 100644
--- a/include/media/v4l2-device.h
+++ b/include/media/v4l2-device.h
@@ -44,6 +44,9 @@
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.