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be0270ec89
There are a few discussions left with regards to this ioctl: 1) the name of the new structs will contain _v2_ on it? 2) what's the best alternative to avoid compat32 issues? Due to that, let's postpone the addition of this new ioctl to the next Kernel version, to give people more time to discuss it. Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
368 lines
10 KiB
C
368 lines
10 KiB
C
/*
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* Multimedia device API
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*
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* Copyright (C) 2010 Nokia Corporation
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*
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* Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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* Sakari Ailus <sakari.ailus@iki.fi>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef __LINUX_MEDIA_H
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#define __LINUX_MEDIA_H
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#ifndef __KERNEL__
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#include <stdint.h>
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#endif
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#include <linux/ioctl.h>
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#include <linux/types.h>
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#include <linux/version.h>
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#define MEDIA_API_VERSION KERNEL_VERSION(0, 1, 0)
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struct media_device_info {
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char driver[16];
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char model[32];
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char serial[40];
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char bus_info[32];
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__u32 media_version;
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__u32 hw_revision;
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__u32 driver_version;
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__u32 reserved[31];
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};
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#define MEDIA_ENT_ID_FLAG_NEXT (1 << 31)
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/*
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* Initial value to be used when a new entity is created
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* Drivers should change it to something useful
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*/
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#define MEDIA_ENT_F_UNKNOWN 0x00000000
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/*
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* Base number ranges for entity functions
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*
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* NOTE: those ranges and entity function number are phased just to
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* make it easier to maintain this file. Userspace should not rely on
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* the ranges to identify a group of function types, as newer
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* functions can be added with any name within the full u32 range.
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*/
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#define MEDIA_ENT_F_BASE 0x00000000
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#define MEDIA_ENT_F_OLD_BASE 0x00010000
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#define MEDIA_ENT_F_OLD_SUBDEV_BASE 0x00020000
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/*
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* DVB entities
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*/
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#define MEDIA_ENT_F_DTV_DEMOD (MEDIA_ENT_F_BASE + 1)
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#define MEDIA_ENT_F_TS_DEMUX (MEDIA_ENT_F_BASE + 2)
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#define MEDIA_ENT_F_DTV_CA (MEDIA_ENT_F_BASE + 3)
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#define MEDIA_ENT_F_DTV_NET_DECAP (MEDIA_ENT_F_BASE + 4)
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/*
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* Connectors
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*/
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/* It is a responsibility of the entity drivers to add connectors and links */
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#define MEDIA_ENT_F_CONN_RF (MEDIA_ENT_F_BASE + 21)
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#define MEDIA_ENT_F_CONN_SVIDEO (MEDIA_ENT_F_BASE + 22)
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#define MEDIA_ENT_F_CONN_COMPOSITE (MEDIA_ENT_F_BASE + 23)
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/* For internal test signal generators and other debug connectors */
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#define MEDIA_ENT_F_CONN_TEST (MEDIA_ENT_F_BASE + 24)
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/*
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* I/O entities
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*/
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#define MEDIA_ENT_F_IO_DTV (MEDIA_ENT_F_BASE + 31)
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#define MEDIA_ENT_F_IO_VBI (MEDIA_ENT_F_BASE + 32)
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#define MEDIA_ENT_F_IO_SWRADIO (MEDIA_ENT_F_BASE + 33)
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/*
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* Don't touch on those. The ranges MEDIA_ENT_F_OLD_BASE and
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* MEDIA_ENT_F_OLD_SUBDEV_BASE are kept to keep backward compatibility
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* with the legacy v1 API.The number range is out of range by purpose:
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* several previously reserved numbers got excluded from this range.
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*
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* Subdevs are initialized with MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN,
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* in order to preserve backward compatibility.
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* Drivers must change to the proper subdev type before
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* registering the entity.
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*/
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#define MEDIA_ENT_F_IO_V4L (MEDIA_ENT_F_OLD_BASE + 1)
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#define MEDIA_ENT_F_CAM_SENSOR (MEDIA_ENT_F_OLD_SUBDEV_BASE + 1)
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#define MEDIA_ENT_F_FLASH (MEDIA_ENT_F_OLD_SUBDEV_BASE + 2)
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#define MEDIA_ENT_F_LENS (MEDIA_ENT_F_OLD_SUBDEV_BASE + 3)
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#define MEDIA_ENT_F_ATV_DECODER (MEDIA_ENT_F_OLD_SUBDEV_BASE + 4)
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/*
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* It is a responsibility of the entity drivers to add connectors and links
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* for the tuner entities.
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*/
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#define MEDIA_ENT_F_TUNER (MEDIA_ENT_F_OLD_SUBDEV_BASE + 5)
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#define MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN MEDIA_ENT_F_OLD_SUBDEV_BASE
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#ifndef __KERNEL__
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/*
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* Legacy symbols used to avoid userspace compilation breakages
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*
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* Those symbols map the entity function into types and should be
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* used only on legacy programs for legacy hardware. Don't rely
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* on those for MEDIA_IOC_G_TOPOLOGY.
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*/
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#define MEDIA_ENT_TYPE_SHIFT 16
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#define MEDIA_ENT_TYPE_MASK 0x00ff0000
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#define MEDIA_ENT_SUBTYPE_MASK 0x0000ffff
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#define MEDIA_ENT_T_DEVNODE MEDIA_ENT_F_OLD_BASE
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#define MEDIA_ENT_T_DEVNODE_V4L MEDIA_ENT_F_IO_V4L
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#define MEDIA_ENT_T_DEVNODE_FB (MEDIA_ENT_T_DEVNODE + 2)
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#define MEDIA_ENT_T_DEVNODE_ALSA (MEDIA_ENT_T_DEVNODE + 3)
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#define MEDIA_ENT_T_DEVNODE_DVB (MEDIA_ENT_T_DEVNODE + 4)
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#define MEDIA_ENT_T_UNKNOWN MEDIA_ENT_F_UNKNOWN
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#define MEDIA_ENT_T_V4L2_VIDEO MEDIA_ENT_F_IO_V4L
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#define MEDIA_ENT_T_V4L2_SUBDEV MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN
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#define MEDIA_ENT_T_V4L2_SUBDEV_SENSOR MEDIA_ENT_F_CAM_SENSOR
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#define MEDIA_ENT_T_V4L2_SUBDEV_FLASH MEDIA_ENT_F_FLASH
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#define MEDIA_ENT_T_V4L2_SUBDEV_LENS MEDIA_ENT_F_LENS
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#define MEDIA_ENT_T_V4L2_SUBDEV_DECODER MEDIA_ENT_F_ATV_DECODER
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#define MEDIA_ENT_T_V4L2_SUBDEV_TUNER MEDIA_ENT_F_TUNER
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#endif
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/* Entity flags */
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#define MEDIA_ENT_FL_DEFAULT (1 << 0)
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#define MEDIA_ENT_FL_CONNECTOR (1 << 1)
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struct media_entity_desc {
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__u32 id;
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char name[32];
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__u32 type;
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__u32 revision;
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__u32 flags;
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__u32 group_id;
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__u16 pads;
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__u16 links;
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__u32 reserved[4];
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union {
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/* Node specifications */
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struct {
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__u32 major;
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__u32 minor;
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} dev;
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#if 1
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/*
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* TODO: this shouldn't have been added without
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* actual drivers that use this. When the first real driver
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* appears that sets this information, special attention
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* should be given whether this information is 1) enough, and
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* 2) can deal with udev rules that rename devices. The struct
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* dev would not be sufficient for this since that does not
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* contain the subdevice information. In addition, struct dev
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* can only refer to a single device, and not to multiple (e.g.
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* pcm and mixer devices).
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*
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* So for now mark this as a to do.
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*/
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struct {
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__u32 card;
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__u32 device;
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__u32 subdevice;
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} alsa;
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#endif
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#if 1
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/*
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* DEPRECATED: previous node specifications. Kept just to
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* avoid breaking compilation, but media_entity_desc.dev
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* should be used instead. In particular, alsa and dvb
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* fields below are wrong: for all devnodes, there should
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* be just major/minor inside the struct, as this is enough
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* to represent any devnode, no matter what type.
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*/
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struct {
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__u32 major;
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__u32 minor;
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} v4l;
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struct {
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__u32 major;
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__u32 minor;
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} fb;
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int dvb;
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#endif
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/* Sub-device specifications */
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/* Nothing needed yet */
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__u8 raw[184];
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};
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};
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#define MEDIA_PAD_FL_SINK (1 << 0)
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#define MEDIA_PAD_FL_SOURCE (1 << 1)
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#define MEDIA_PAD_FL_MUST_CONNECT (1 << 2)
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struct media_pad_desc {
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__u32 entity; /* entity ID */
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__u16 index; /* pad index */
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__u32 flags; /* pad flags */
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__u32 reserved[2];
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};
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#define MEDIA_LNK_FL_ENABLED (1 << 0)
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#define MEDIA_LNK_FL_IMMUTABLE (1 << 1)
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#define MEDIA_LNK_FL_DYNAMIC (1 << 2)
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#define MEDIA_LNK_FL_LINK_TYPE (0xf << 28)
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# define MEDIA_LNK_FL_DATA_LINK (0 << 28)
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# define MEDIA_LNK_FL_INTERFACE_LINK (1 << 28)
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struct media_link_desc {
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struct media_pad_desc source;
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struct media_pad_desc sink;
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__u32 flags;
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__u32 reserved[2];
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};
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struct media_links_enum {
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__u32 entity;
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/* Should have enough room for pads elements */
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struct media_pad_desc __user *pads;
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/* Should have enough room for links elements */
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struct media_link_desc __user *links;
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__u32 reserved[4];
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};
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/* Interface type ranges */
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#define MEDIA_INTF_T_DVB_BASE 0x00000100
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#define MEDIA_INTF_T_V4L_BASE 0x00000200
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/* Interface types */
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#define MEDIA_INTF_T_DVB_FE (MEDIA_INTF_T_DVB_BASE)
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#define MEDIA_INTF_T_DVB_DEMUX (MEDIA_INTF_T_DVB_BASE + 1)
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#define MEDIA_INTF_T_DVB_DVR (MEDIA_INTF_T_DVB_BASE + 2)
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#define MEDIA_INTF_T_DVB_CA (MEDIA_INTF_T_DVB_BASE + 3)
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#define MEDIA_INTF_T_DVB_NET (MEDIA_INTF_T_DVB_BASE + 4)
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#define MEDIA_INTF_T_V4L_VIDEO (MEDIA_INTF_T_V4L_BASE)
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#define MEDIA_INTF_T_V4L_VBI (MEDIA_INTF_T_V4L_BASE + 1)
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#define MEDIA_INTF_T_V4L_RADIO (MEDIA_INTF_T_V4L_BASE + 2)
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#define MEDIA_INTF_T_V4L_SUBDEV (MEDIA_INTF_T_V4L_BASE + 3)
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#define MEDIA_INTF_T_V4L_SWRADIO (MEDIA_INTF_T_V4L_BASE + 4)
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/*
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* MC next gen API definitions
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*
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* NOTE: The declarations below are close to the MC RFC for the Media
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* Controller, the next generation. Yet, there are a few adjustments
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* to do, as we want to be able to have a functional API before
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* the MC properties change. Those will be properly marked below.
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* Please also notice that I removed "num_pads", "num_links",
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* from the proposal, as a proper userspace application will likely
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* use lists for pads/links, just as we intend to do in Kernelspace.
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* The API definition should be freed from fields that are bound to
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* some specific data structure.
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*
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* FIXME: Currently, I opted to name the new types as "media_v2", as this
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* won't cause any conflict with the Kernelspace namespace, nor with
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* the previous kAPI media_*_desc namespace. This can be changed
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* later, before the adding this API upstream.
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*/
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#if 0 /* Let's postpone it to Kernel 4.6 */
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struct media_v2_entity {
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__u32 id;
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char name[64]; /* FIXME: move to a property? (RFC says so) */
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__u32 function; /* Main function of the entity */
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__u16 reserved[12];
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};
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/* Should match the specific fields at media_intf_devnode */
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struct media_v2_intf_devnode {
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__u32 major;
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__u32 minor;
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};
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struct media_v2_interface {
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__u32 id;
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__u32 intf_type;
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__u32 flags;
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__u32 reserved[9];
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union {
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struct media_v2_intf_devnode devnode;
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__u32 raw[16];
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};
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};
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struct media_v2_pad {
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__u32 id;
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__u32 entity_id;
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__u32 flags;
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__u16 reserved[9];
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};
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struct media_v2_link {
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__u32 id;
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__u32 source_id;
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__u32 sink_id;
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__u32 flags;
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__u32 reserved[5];
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};
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struct media_v2_topology {
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__u64 topology_version;
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__u32 num_entities;
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__u32 reserved1;
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__u64 ptr_entities;
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__u32 num_interfaces;
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__u32 reserved2;
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__u64 ptr_interfaces;
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__u32 num_pads;
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__u32 reserved3;
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__u64 ptr_pads;
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__u32 num_links;
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__u32 reserved4;
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__u64 ptr_links;
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};
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static inline void __user *media_get_uptr(__u64 arg)
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{
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return (void __user *)(uintptr_t)arg;
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}
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#endif
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/* ioctls */
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#define MEDIA_IOC_DEVICE_INFO _IOWR('|', 0x00, struct media_device_info)
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#define MEDIA_IOC_ENUM_ENTITIES _IOWR('|', 0x01, struct media_entity_desc)
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#define MEDIA_IOC_ENUM_LINKS _IOWR('|', 0x02, struct media_links_enum)
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#define MEDIA_IOC_SETUP_LINK _IOWR('|', 0x03, struct media_link_desc)
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#if 0 /* Let's postpone it to Kernel 4.6 */
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#define MEDIA_IOC_G_TOPOLOGY _IOWR('|', 0x04, struct media_v2_topology)
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#endif
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#endif /* __LINUX_MEDIA_H */
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