mirror of
https://github.com/drasko/open-ameba.git
synced 2024-11-24 15:04:18 +00:00
106 lines
3.1 KiB
C
106 lines
3.1 KiB
C
|
/*
|
||
|
|
* Media device
|
||
|
|
*
|
||
|
|
* Copyright (C) 2010 Nokia Corporation
|
||
|
|
*
|
||
|
|
* Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
|
||
|
|
* Sakari Ailus <sakari.ailus@iki.fi>
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License version 2 as
|
||
|
|
* published by the Free Software Foundation.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this program; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _MEDIA_DEVICE_H
|
||
|
|
#define _MEDIA_DEVICE_H
|
||
|
|
|
||
|
|
#if 0
|
||
|
|
#include <linux/list.h>
|
||
|
|
#include <linux/mutex.h>
|
||
|
|
#include <linux/spinlock.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#include "v4l2-osdep.h"
|
||
|
|
#include "media-devnode.h"
|
||
|
|
#include "media-entity.h"
|
||
|
|
|
||
|
|
|
||
|
|
//struct device;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct media_device - Media device
|
||
|
|
* @dev: Parent device
|
||
|
|
* @devnode: Media device node
|
||
|
|
* @model: Device model name
|
||
|
|
* @serial: Device serial number (optional)
|
||
|
|
* @bus_info: Unique and stable device location identifier
|
||
|
|
* @hw_revision: Hardware device revision
|
||
|
|
* @driver_version: Device driver version
|
||
|
|
* @entity_id: ID of the next entity to be registered
|
||
|
|
* @entities: List of registered entities
|
||
|
|
* @lock: Entities list lock
|
||
|
|
* @graph_mutex: Entities graph operation lock
|
||
|
|
* @link_notify: Link state change notification callback
|
||
|
|
*
|
||
|
|
* This structure represents an abstract high-level media device. It allows easy
|
||
|
|
* access to entities and provides basic media device-level support. The
|
||
|
|
* structure can be allocated directly or embedded in a larger structure.
|
||
|
|
*
|
||
|
|
* The parent @dev is a physical device. It must be set before registering the
|
||
|
|
* media device.
|
||
|
|
*
|
||
|
|
* @model is a descriptive model name exported through sysfs. It doesn't have to
|
||
|
|
* be unique.
|
||
|
|
*/
|
||
|
|
struct media_device {
|
||
|
|
/* dev->driver_data points to this struct. */
|
||
|
|
//struct device *dev;
|
||
|
|
struct media_devnode devnode;
|
||
|
|
|
||
|
|
char model[32];
|
||
|
|
char serial[40];
|
||
|
|
char bus_info[32];
|
||
|
|
u32 hw_revision;
|
||
|
|
u32 driver_version;
|
||
|
|
|
||
|
|
u32 entity_id;
|
||
|
|
struct list_head entities;
|
||
|
|
|
||
|
|
/* Protects the entities list */
|
||
|
|
spinlock_t lock;
|
||
|
|
/* Serializes graph operations. */
|
||
|
|
//struct mutex graph_mutex;
|
||
|
|
_Mutex graph_mutex;
|
||
|
|
|
||
|
|
int (*link_notify)(struct media_link *link, u32 flags, unsigned int notification);
|
||
|
|
};
|
||
|
|
|
||
|
|
/* Supported link_notify @notification values. */
|
||
|
|
#define MEDIA_DEV_NOTIFY_PRE_LINK_CH 0
|
||
|
|
#define MEDIA_DEV_NOTIFY_POST_LINK_CH 1
|
||
|
|
|
||
|
|
/* media_devnode to media_device */
|
||
|
|
#define to_media_device(node) container_of(node, struct media_device, devnode)
|
||
|
|
|
||
|
|
int media_device_register(struct media_device *mdev);
|
||
|
|
void media_device_unregister(struct media_device *mdev);
|
||
|
|
|
||
|
|
int media_device_register_entity(struct media_device *mdev,
|
||
|
|
struct media_entity *entity);
|
||
|
|
void media_device_unregister_entity(struct media_entity *entity);
|
||
|
|
|
||
|
|
/* Iterate over all entities. */
|
||
|
|
#define media_device_for_each_entity(entity, mdev, type) \
|
||
|
|
list_for_each_entry(entity, &(mdev)->entities, list, type)
|
||
|
|
|
||
|
|
#endif
|