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[media] v4l: Make v4l2_subdev inherit from media_entity

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V4L2 subdevices are media entities. As such they need to inherit from
(include) the media_entity structure.

When registering/unregistering the subdevice, 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>
This commit is contained in:
Laurent Pinchart
2009-12-09 08:40:08 -03:00
committed by Mauro Carvalho Chehab
parent 2c0ab67be1
commit 61f5db549d
4 changed files with 87 additions and 6 deletions
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6
include/media/v4l2-subdev.h
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@@ -21,6 +21,7 @@
#ifndef _V4L2_SUBDEV_H
#define _V4L2_SUBDEV_H
#include <media/media-entity.h>
#include <media/v4l2-common.h>
#include <media/v4l2-dev.h>
#include <media/v4l2-mediabus.h>
@@ -450,6 +451,9 @@ struct v4l2_subdev_internal_ops {
stand-alone or embedded in a larger struct.
*/
struct v4l2_subdev {
#if defined(CONFIG_MEDIA_CONTROLLER)
struct media_entity entity;
#endif
struct list_head list;
struct module *owner;
u32 flags;
@@ -472,6 +476,8 @@ struct v4l2_subdev {
unsigned int nevents;
};
#define media_entity_to_v4l2_subdev(ent) \
container_of(ent, struct v4l2_subdev, entity)
#define vdev_to_v4l2_subdev(vdev) \
container_of(vdev, struct v4l2_subdev, devnode)