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
 60#define MEDIA_ENT_FL_DEFAULT		(1 << 0)
 61
 62struct media_entity_desc {
 63	__u32 id;
 64	char name[32];
 65	__u32 type;
 66	__u32 revision;
 67	__u32 flags;
 68	__u32 group_id;
 69	__u16 pads;
 70	__u16 links;
 71
 72	__u32 reserved[4];
 73
 74	union {
 75		/* Node specifications */
 76		struct {
 77			__u32 major;
 78			__u32 minor;
 79		} v4l;
 80		struct {
 81			__u32 major;
 82			__u32 minor;
 83		} fb;
 84		struct {
 85			__u32 card;
 86			__u32 device;
 87			__u32 subdevice;
 88		} alsa;
 89		int dvb;
 90
 91		/* Sub-device specifications */
 92		/* Nothing needed yet */
 93		__u8 raw[184];
 94	};
 95};
 96
 97#define MEDIA_PAD_FL_SINK		(1 << 0)
 98#define MEDIA_PAD_FL_SOURCE		(1 << 1)
 99
100struct media_pad_desc {
101	__u32 entity;		/* entity ID */
102	__u16 index;		/* pad index */
103	__u32 flags;		/* pad flags */
104	__u32 reserved[2];
105};
106
107#define MEDIA_LNK_FL_ENABLED		(1 << 0)
108#define MEDIA_LNK_FL_IMMUTABLE		(1 << 1)
109#define MEDIA_LNK_FL_DYNAMIC		(1 << 2)
110
111struct media_link_desc {
112	struct media_pad_desc source;
113	struct media_pad_desc sink;
114	__u32 flags;
115	__u32 reserved[2];
116};
117
118struct media_links_enum {
119	__u32 entity;
120	/* Should have enough room for pads elements */
121	struct media_pad_desc __user *pads;
122	/* Should have enough room for links elements */
123	struct media_link_desc __user *links;
124	__u32 reserved[4];
125};
126
127#define MEDIA_IOC_DEVICE_INFO		_IOWR('|', 0x00, struct media_device_info)
128#define MEDIA_IOC_ENUM_ENTITIES		_IOWR('|', 0x01, struct media_entity_desc)
129#define MEDIA_IOC_ENUM_LINKS		_IOWR('|', 0x02, struct media_links_enum)
130#define MEDIA_IOC_SETUP_LINK		_IOWR('|', 0x03, struct media_link_desc)
131
132#endif /* __LINUX_MEDIA_H */