1/*
2 * Multimedia device API
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 __LINUX_MEDIA_H
24#define __LINUX_MEDIA_H
25
26#include <linux/ioctl.h>
27#include <linux/types.h>
28#include <linux/version.h>
29
30#define MEDIA_API_VERSION	KERNEL_VERSION(0, 1, 0)
31
32struct media_device_info {
33	char driver[16];
34	char model[32];
35	char serial[40];
36	char bus_info[32];
37	__u32 media_version;
38	__u32 hw_revision;
39	__u32 driver_version;
40	__u32 reserved[31];
41};
42
43#define MEDIA_ENT_ID_FLAG_NEXT		(1 << 31)
44
45#define MEDIA_ENT_TYPE_SHIFT		16
46#define MEDIA_ENT_TYPE_MASK		0x00ff0000
47#define MEDIA_ENT_SUBTYPE_MASK		0x0000ffff
48
49#define MEDIA_ENT_T_DEVNODE		(1 << MEDIA_ENT_TYPE_SHIFT)
50#define MEDIA_ENT_T_DEVNODE_V4L		(MEDIA_ENT_T_DEVNODE + 1)
51#define MEDIA_ENT_T_DEVNODE_FB		(MEDIA_ENT_T_DEVNODE + 2)
52#define MEDIA_ENT_T_DEVNODE_ALSA	(MEDIA_ENT_T_DEVNODE + 3)
53#define MEDIA_ENT_T_DEVNODE_DVB		(MEDIA_ENT_T_DEVNODE + 4)
54
55#define MEDIA_ENT_T_V4L2_SUBDEV		(2 << MEDIA_ENT_TYPE_SHIFT)
56#define MEDIA_ENT_T_V4L2_SUBDEV_SENSOR	(MEDIA_ENT_T_V4L2_SUBDEV + 1)
57#define MEDIA_ENT_T_V4L2_SUBDEV_FLASH	(MEDIA_ENT_T_V4L2_SUBDEV + 2)
58#define MEDIA_ENT_T_V4L2_SUBDEV_LENS	(MEDIA_ENT_T_V4L2_SUBDEV + 3)
59/* A converter of analogue video to its digital representation. */
60#define MEDIA_ENT_T_V4L2_SUBDEV_DECODER	(MEDIA_ENT_T_V4L2_SUBDEV + 4)
61
62#define MEDIA_ENT_FL_DEFAULT		(1 << 0)
63
64struct media_entity_desc {
65	__u32 id;
66	char name[32];
67	__u32 type;
68	__u32 revision;
69	__u32 flags;
70	__u32 group_id;
71	__u16 pads;
72	__u16 links;
73
74	__u32 reserved[4];
75
76	union {
77		/* Node specifications */
78		struct {
79			__u32 major;
80			__u32 minor;
81		} v4l;
82		struct {
83			__u32 major;
84			__u32 minor;
85		} fb;
86		struct {
87			__u32 card;
88			__u32 device;
89			__u32 subdevice;
90		} alsa;
91		int dvb;
92
93		/* Sub-device specifications */
94		/* Nothing needed yet */
95		__u8 raw[184];
96	};
97};
98
99#define MEDIA_PAD_FL_SINK		(1 << 0)
100#define MEDIA_PAD_FL_SOURCE		(1 << 1)
101#define MEDIA_PAD_FL_MUST_CONNECT	(1 << 2)
102
103struct media_pad_desc {
104	__u32 entity;		/* entity ID */
105	__u16 index;		/* pad index */
106	__u32 flags;		/* pad flags */
107	__u32 reserved[2];
108};
109
110#define MEDIA_LNK_FL_ENABLED		(1 << 0)
111#define MEDIA_LNK_FL_IMMUTABLE		(1 << 1)
112#define MEDIA_LNK_FL_DYNAMIC		(1 << 2)
113
114struct media_link_desc {
115	struct media_pad_desc source;
116	struct media_pad_desc sink;
117	__u32 flags;
118	__u32 reserved[2];
119};
120
121struct media_links_enum {
122	__u32 entity;
123	/* Should have enough room for pads elements */
124	struct media_pad_desc __user *pads;
125	/* Should have enough room for links elements */
126	struct media_link_desc __user *links;
127	__u32 reserved[4];
128};
129
130#define MEDIA_IOC_DEVICE_INFO		_IOWR('|', 0x00, struct media_device_info)
131#define MEDIA_IOC_ENUM_ENTITIES		_IOWR('|', 0x01, struct media_entity_desc)
132#define MEDIA_IOC_ENUM_LINKS		_IOWR('|', 0x02, struct media_links_enum)
133#define MEDIA_IOC_SETUP_LINK		_IOWR('|', 0x03, struct media_link_desc)
134
135#endif /* __LINUX_MEDIA_H */
136