/*
   * Multimedia device API
   *
   * Copyright (C) 2010 Nokia Corporation
   *
   * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
   *	     Sakari Ailus <sakari.ailus@iki.fi>
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   */
  
  #ifndef __LINUX_MEDIA_H
  #define __LINUX_MEDIA_H
  
  #include <linux/ioctl.h>
  #include <linux/types.h>
  #include <linux/version.h>
  
  #define MEDIA_API_VERSION	KERNEL_VERSION(0, 1, 0)
  
  struct media_device_info {
  	char driver[16];
  	char model[32];
  	char serial[40];
  	char bus_info[32];
  	__u32 media_version;
  	__u32 hw_revision;
  	__u32 driver_version;
  	__u32 reserved[31];
  };
  
  #define MEDIA_ENT_ID_FLAG_NEXT		(1 << 31)
  
  #define MEDIA_ENT_TYPE_SHIFT		16
  #define MEDIA_ENT_TYPE_MASK		0x00ff0000
  #define MEDIA_ENT_SUBTYPE_MASK		0x0000ffff
  
  #define MEDIA_ENT_T_DEVNODE		(1 << MEDIA_ENT_TYPE_SHIFT)
  #define MEDIA_ENT_T_DEVNODE_V4L		(MEDIA_ENT_T_DEVNODE + 1)
  #define MEDIA_ENT_T_DEVNODE_FB		(MEDIA_ENT_T_DEVNODE + 2)
  #define MEDIA_ENT_T_DEVNODE_ALSA	(MEDIA_ENT_T_DEVNODE + 3)
  #define MEDIA_ENT_T_DEVNODE_DVB		(MEDIA_ENT_T_DEVNODE + 4)
  
  #define MEDIA_ENT_T_V4L2_SUBDEV		(2 << MEDIA_ENT_TYPE_SHIFT)
  #define MEDIA_ENT_T_V4L2_SUBDEV_SENSOR	(MEDIA_ENT_T_V4L2_SUBDEV + 1)
  #define MEDIA_ENT_T_V4L2_SUBDEV_FLASH	(MEDIA_ENT_T_V4L2_SUBDEV + 2)
  #define MEDIA_ENT_T_V4L2_SUBDEV_LENS	(MEDIA_ENT_T_V4L2_SUBDEV + 3)
  /* A converter of analogue video to its digital representation. */
  #define MEDIA_ENT_T_V4L2_SUBDEV_DECODER	(MEDIA_ENT_T_V4L2_SUBDEV + 4)
  
  #define MEDIA_ENT_FL_DEFAULT		(1 << 0)
  
  struct media_entity_desc {
  	__u32 id;
  	char name[32];
  	__u32 type;
  	__u32 revision;
  	__u32 flags;
  	__u32 group_id;
  	__u16 pads;
  	__u16 links;
  
  	__u32 reserved[4];
  
  	union {
  		/* Node specifications */
  		struct {
  			__u32 major;
  			__u32 minor;
  		} v4l;
  		struct {
  			__u32 major;
  			__u32 minor;
  		} fb;
  		struct {
  			__u32 card;
  			__u32 device;
  			__u32 subdevice;
  		} alsa;
  		int dvb;
  
  		/* Sub-device specifications */
  		/* Nothing needed yet */
  		__u8 raw[184];
  	};
  };
  
  #define MEDIA_PAD_FL_SINK		(1 << 0)
  #define MEDIA_PAD_FL_SOURCE		(1 << 1)
  #define MEDIA_PAD_FL_MUST_CONNECT	(1 << 2)
  
  struct media_pad_desc {
  	__u32 entity;		/* entity ID */
  	__u16 index;		/* pad index */
  	__u32 flags;		/* pad flags */
  	__u32 reserved[2];
  };
  
  #define MEDIA_LNK_FL_ENABLED		(1 << 0)
  #define MEDIA_LNK_FL_IMMUTABLE		(1 << 1)
  #define MEDIA_LNK_FL_DYNAMIC		(1 << 2)
  
  struct media_link_desc {
  	struct media_pad_desc source;
  	struct media_pad_desc sink;
  	__u32 flags;
  	__u32 reserved[2];
  };
  
  struct media_links_enum {
  	__u32 entity;
  	/* Should have enough room for pads elements */
  	struct media_pad_desc __user *pads;
  	/* Should have enough room for links elements */
  	struct media_link_desc __user *links;
  	__u32 reserved[4];
  };
  
  #define MEDIA_IOC_DEVICE_INFO		_IOWR('|', 0x00, struct media_device_info)
  #define MEDIA_IOC_ENUM_ENTITIES		_IOWR('|', 0x01, struct media_entity_desc)
  #define MEDIA_IOC_ENUM_LINKS		_IOWR('|', 0x02, struct media_links_enum)
  #define MEDIA_IOC_SETUP_LINK		_IOWR('|', 0x03, struct media_link_desc)
  
  #endif /* __LINUX_MEDIA_H */