Root/
1 | /* |
2 | * Media device |
3 | * |
4 | * Copyright (C) 2010 Nokia Corporation |
5 | * |
6 | * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com> |
7 | * Sakari Ailus <sakari.ailus@iki.fi> |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify |
10 | * it under the terms of the GNU General Public License version 2 as |
11 | * published by the Free Software Foundation. |
12 | * |
13 | * This program is distributed in the hope that it will be useful, |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
16 | * GNU General Public License for more details. |
17 | * |
18 | * You should have received a copy of the GNU General Public License |
19 | * along with this program; if not, write to the Free Software |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
21 | */ |
22 | |
23 | #ifndef _MEDIA_DEVICE_H |
24 | #define _MEDIA_DEVICE_H |
25 | |
26 | #include <linux/device.h> |
27 | #include <linux/list.h> |
28 | #include <linux/mutex.h> |
29 | #include <linux/spinlock.h> |
30 | |
31 | #include <media/media-devnode.h> |
32 | #include <media/media-entity.h> |
33 | |
34 | /** |
35 | * struct media_device - Media device |
36 | * @dev: Parent device |
37 | * @devnode: Media device node |
38 | * @model: Device model name |
39 | * @serial: Device serial number (optional) |
40 | * @bus_info: Unique and stable device location identifier |
41 | * @hw_revision: Hardware device revision |
42 | * @driver_version: Device driver version |
43 | * @entity_id: ID of the next entity to be registered |
44 | * @entities: List of registered entities |
45 | * @lock: Entities list lock |
46 | * @graph_mutex: Entities graph operation lock |
47 | * |
48 | * This structure represents an abstract high-level media device. It allows easy |
49 | * access to entities and provides basic media device-level support. The |
50 | * structure can be allocated directly or embedded in a larger structure. |
51 | * |
52 | * The parent @dev is a physical device. It must be set before registering the |
53 | * media device. |
54 | * |
55 | * @model is a descriptive model name exported through sysfs. It doesn't have to |
56 | * be unique. |
57 | */ |
58 | struct media_device { |
59 | /* dev->driver_data points to this struct. */ |
60 | struct device *dev; |
61 | struct media_devnode devnode; |
62 | |
63 | char model[32]; |
64 | char serial[40]; |
65 | char bus_info[32]; |
66 | u32 hw_revision; |
67 | u32 driver_version; |
68 | |
69 | u32 entity_id; |
70 | struct list_head entities; |
71 | |
72 | /* Protects the entities list */ |
73 | spinlock_t lock; |
74 | /* Serializes graph operations. */ |
75 | struct mutex graph_mutex; |
76 | |
77 | int (*link_notify)(struct media_pad *source, |
78 | struct media_pad *sink, u32 flags); |
79 | }; |
80 | |
81 | /* media_devnode to media_device */ |
82 | #define to_media_device(node) container_of(node, struct media_device, devnode) |
83 | |
84 | int __must_check media_device_register(struct media_device *mdev); |
85 | void media_device_unregister(struct media_device *mdev); |
86 | |
87 | int __must_check media_device_register_entity(struct media_device *mdev, |
88 | struct media_entity *entity); |
89 | void media_device_unregister_entity(struct media_entity *entity); |
90 | |
91 | /* Iterate over all entities. */ |
92 | #define media_device_for_each_entity(entity, mdev) \ |
93 | list_for_each_entry(entity, &(mdev)->entities, list) |
94 | |
95 | #endif |
96 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9