include/linux/media.h

   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
  32 struct 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
  62 struct 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
 100 struct 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
 110 struct media_link_desc {
 111         struct media_pad_desc source;
 112         struct media_pad_desc sink;
 113         __u32 flags;
 114         __u32 reserved[2];
 115 };
 116
 117 struct media_links_enum {
 118         __u32 entity;
 119         /* Should have enough room for pads elements */
 120         struct media_pad_desc __user *pads;
 121         /* Should have enough room for links elements */
 122         struct media_link_desc __user *links;
 123         __u32 reserved[4];
 124 };
 125
 126 #define MEDIA_IOC_DEVICE_INFO           _IOWR('M', 1, struct media_device_info)
 127 #define MEDIA_IOC_ENUM_ENTITIES         _IOWR('M', 2, struct media_entity_desc)
 128 #define MEDIA_IOC_ENUM_LINKS            _IOWR('M', 3, struct media_links_enum)
 129 #define MEDIA_IOC_SETUP_LINK            _IOWR('M', 4, struct media_link_desc)
 130
 131 #endif /* __LINUX_MEDIA_H */