[media] v4l2: add v4l2_prio_state to v4l2_device and video_device
Integrate the v4l2_prio_state into the core, ready for use.
One struct v4l2_prio_state is added to v4l2_device and a pointer
to a prio state is added to video_device.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/v4l2-dev.c b/drivers/media/video/v4l2-dev.c
index 65d546f..6b1ef85d 100644
--- a/drivers/media/video/v4l2-dev.c
+++ b/drivers/media/video/v4l2-dev.c
@@ -573,6 +573,12 @@
vdev->parent = vdev->v4l2_dev->dev;
if (vdev->ctrl_handler == NULL)
vdev->ctrl_handler = vdev->v4l2_dev->ctrl_handler;
+ /* If the prio state pointer is NULL, and if the driver doesn't
+ handle priorities itself, then use the v4l2_device prio
+ state. */
+ if (vdev->prio == NULL && vdev->ioctl_ops &&
+ vdev->ioctl_ops->vidioc_s_priority == NULL)
+ vdev->prio = &vdev->v4l2_dev->prio;
}
/* Part 2: find a free minor, device node number and device index. */
diff --git a/drivers/media/video/v4l2-device.c b/drivers/media/video/v4l2-device.c
index a1afda3..fd7a445 100644
--- a/drivers/media/video/v4l2-device.c
+++ b/drivers/media/video/v4l2-device.c
@@ -36,6 +36,7 @@
INIT_LIST_HEAD(&v4l2_dev->subdevs);
spin_lock_init(&v4l2_dev->lock);
mutex_init(&v4l2_dev->ioctl_lock);
+ v4l2_prio_init(&v4l2_dev->prio);
v4l2_dev->dev = dev;
if (dev == NULL) {
/* If dev == NULL, then name must be filled in by the caller */