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/*
* 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)
/* Used values for media_entity_desc::type */
/*
* Initial value to be used when a new entity is created
* Drivers should change it to something useful
*/
#define MEDIA_ENT_T_UNKNOWN 0x00000000
/*
* Base numbers for entity types
*
* Please notice that the huge gap of 16 bits for each base is overkill!
* 8 bits is more than enough to avoid starving entity types for each
* subsystem.
*
* However, It is kept this way just to avoid binary breakages with the
* namespace provided on legacy versions of this header.
*/
#define MEDIA_ENT_T_DVB_BASE 0x00000000
#define MEDIA_ENT_T_V4L2_BASE 0x00010000
#define MEDIA_ENT_T_V4L2_SUBDEV_BASE 0x00020000
/*
* V4L2 entities - Those are used for DMA (mmap/DMABUF) and
* read()/write() data I/O associated with the V4L2 devnodes.
*/
#define MEDIA_ENT_T_V4L2_VIDEO (MEDIA_ENT_T_V4L2_BASE + 1)
/*
* Please notice that numbers between MEDIA_ENT_T_V4L2_BASE + 2 and
* MEDIA_ENT_T_V4L2_BASE + 4 can't be used, as those values used
* to be declared for FB, ALSA and DVB entities.
* As those values were never actually used in practice, we're just
* adding them as backward compatibility macros and keeping the
* numberspace clean here. This way, we avoid breaking compilation,
* in the case of having some userspace application using the old
* symbols.
*/
#define MEDIA_ENT_T_V4L2_VBI (MEDIA_ENT_T_V4L2_BASE + 5)
#define MEDIA_ENT_T_V4L2_SWRADIO (MEDIA_ENT_T_V4L2_BASE + 6)
/* V4L2 Sub-device entities */
/*
* Subdevs are initialized with MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN,
* in order to preserve backward compatibility.
* Drivers should change to the proper subdev type before
* registering the entity.
*/
#define MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN MEDIA_ENT_T_V4L2_SUBDEV_BASE
#define MEDIA_ENT_T_V4L2_SUBDEV_SENSOR (MEDIA_ENT_T_V4L2_SUBDEV_BASE + 1)
#define MEDIA_ENT_T_V4L2_SUBDEV_FLASH (MEDIA_ENT_T_V4L2_SUBDEV_BASE + 2)
#define MEDIA_ENT_T_V4L2_SUBDEV_LENS (MEDIA_ENT_T_V4L2_SUBDEV_BASE + 3)
/* A converter of analogue video to its digital representation. */
#define MEDIA_ENT_T_V4L2_SUBDEV_DECODER (MEDIA_ENT_T_V4L2_SUBDEV_BASE + 4)
/* Tuner entity is actually both V4L2 and DVB subdev */
#define MEDIA_ENT_T_V4L2_SUBDEV_TUNER (MEDIA_ENT_T_V4L2_SUBDEV_BASE + 5)
/* DVB entities */
#define MEDIA_ENT_T_DVB_DEMOD (MEDIA_ENT_T_DVB_BASE + 1)
#define MEDIA_ENT_T_DVB_DEMUX (MEDIA_ENT_T_DVB_BASE + 2)
#define MEDIA_ENT_T_DVB_TSOUT (MEDIA_ENT_T_DVB_BASE + 3)
#define MEDIA_ENT_T_DVB_CA (MEDIA_ENT_T_DVB_BASE + 4)
#define MEDIA_ENT_T_DVB_NET_DECAP (MEDIA_ENT_T_DVB_BASE + 5)
/* Legacy symbols used to avoid userspace compilation breakages */
#define MEDIA_ENT_TYPE_SHIFT 16
#define MEDIA_ENT_TYPE_MASK 0x00ff0000
#define MEDIA_ENT_SUBTYPE_MASK 0x0000ffff
#define MEDIA_ENT_T_DEVNODE MEDIA_ENT_T_V4L2_BASE
#define MEDIA_ENT_T_V4L2_SUBDEV MEDIA_ENT_T_V4L2_SUBDEV_BASE
#define MEDIA_ENT_T_DEVNODE_V4L MEDIA_ENT_T_V4L2_VIDEO
#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)
/* Entity types */
#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;
} dev;
#if 1
/*
* TODO: this shouldn't have been added without
* actual drivers that use this. When the first real driver
* appears that sets this information, special attention
* should be given whether this information is 1) enough, and
* 2) can deal with udev rules that rename devices. The struct
* dev would not be sufficient for this since that does not
* contain the subdevice information. In addition, struct dev
* can only refer to a single device, and not to multiple (e.g.
* pcm and mixer devices).
*
* So for now mark this as a to do.
*/
struct {
__u32 card;
__u32 device;
__u32 subdevice;
} alsa;
#endif
#if 1
/*
* DEPRECATED: previous node specifications. Kept just to
* avoid breaking compilation, but media_entity_desc.dev
* should be used instead. In particular, alsa and dvb
* fields below are wrong: for all devnodes, there should
* be just major/minor inside the struct, as this is enough
* to represent any devnode, no matter what type.
*/
struct {
__u32 major;
__u32 minor;
} v4l;
struct {
__u32 major;
__u32 minor;
} fb;
int dvb;
#endif
/* 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];
};
/* Interface type ranges */
#define MEDIA_INTF_T_DVB_BASE 0x00000100
#define MEDIA_INTF_T_V4L_BASE 0x00000200
/* Interface types */
#define MEDIA_INTF_T_DVB_FE (MEDIA_INTF_T_DVB_BASE)
#define MEDIA_INTF_T_DVB_DEMUX (MEDIA_INTF_T_DVB_BASE + 1)
#define MEDIA_INTF_T_DVB_DVR (MEDIA_INTF_T_DVB_BASE + 2)
#define MEDIA_INTF_T_DVB_CA (MEDIA_INTF_T_DVB_BASE + 3)
#define MEDIA_INTF_T_DVB_NET (MEDIA_INTF_T_DVB_BASE + 4)
#define MEDIA_INTF_T_V4L_VIDEO (MEDIA_INTF_T_V4L_BASE)
#define MEDIA_INTF_T_V4L_VBI (MEDIA_INTF_T_V4L_BASE + 1)
#define MEDIA_INTF_T_V4L_RADIO (MEDIA_INTF_T_V4L_BASE + 2)
#define MEDIA_INTF_T_V4L_SUBDEV (MEDIA_INTF_T_V4L_BASE + 3)
#define MEDIA_INTF_T_V4L_SWRADIO (MEDIA_INTF_T_V4L_BASE + 4)
/* TBD: declare the structs needed for the new G_TOPOLOGY ioctl */
#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 */
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