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[media] v4l2-fh: implement v4l2_priority support 

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2010-12-29 13:36:50 -03:00 committed by Mauro Carvalho Chehab
parent 0f62fd6a2f
commit fc5602be7c
2 changed files with 5 additions and 0 deletions
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4
drivers/media/video/v4l2-fh.c
View File

@ -33,6 +33,8 @@ int v4l2_fh_init(struct v4l2_fh *fh, struct video_device *vdev)
fh->vdev = vdev;
INIT_LIST_HEAD(&fh->list);
set_bit(V4L2_FL_USES_V4L2_FH, &fh->vdev->flags);
fh->prio = V4L2_PRIORITY_UNSET;
BUG_ON(vdev->prio == NULL);
/*
* fh->events only needs to be initialized if the driver
@ -51,6 +53,7 @@ void v4l2_fh_add(struct v4l2_fh *fh)
{
unsigned long flags;
v4l2_prio_open(fh->vdev->prio, &fh->prio);
spin_lock_irqsave(&fh->vdev->fh_lock, flags);
list_add(&fh->list, &fh->vdev->fh_list);
spin_unlock_irqrestore(&fh->vdev->fh_lock, flags);
@ -64,6 +67,7 @@ void v4l2_fh_del(struct v4l2_fh *fh)
spin_lock_irqsave(&fh->vdev->fh_lock, flags);
list_del_init(&fh->list);
spin_unlock_irqrestore(&fh->vdev->fh_lock, flags);
v4l2_prio_close(fh->vdev->prio, fh->prio);
}
EXPORT_SYMBOL_GPL(v4l2_fh_del);

1
include/media/v4l2-fh.h
View File

@ -35,6 +35,7 @@ struct v4l2_fh {
struct list_head list;
struct video_device *vdev;
struct v4l2_events *events; /* events, pending and subscribed */
enum v4l2_priority prio;
};
/*