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      1 /*
      2  * Multimedia device API
      3  *
      4  * Copyright (C) 2010 Nokia Corporation
      5  *
      6  * Contacts: Laurent Pinchart <laurent.pinchart (at) ideasonboard.com>
      7  *	     Sakari Ailus <sakari.ailus (at) 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 #define MEDIA_LNK_FL_DYNAMIC		(1 << 2)
    110 
    111 struct media_link_desc {
    112 	struct media_pad_desc source;
    113 	struct media_pad_desc sink;
    114 	__u32 flags;
    115 	__u32 reserved[2];
    116 };
    117 
    118 struct 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