linux/include/linux/media.h
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   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 */
 133
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