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Diffstat (limited to 'include/linux/media.h')
| -rw-r--r-- | include/linux/media.h | 406 |
1 files changed, 406 insertions, 0 deletions
diff --git a/include/linux/media.h b/include/linux/media.h new file mode 100644 index 00000000..c7566461 --- /dev/null +++ b/include/linux/media.h @@ -0,0 +1,406 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +/* + * 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. + */ + +#ifndef __LINUX_MEDIA_H +#define __LINUX_MEDIA_H + +#include <stdint.h> +#include <linux/ioctl.h> +#include <linux/types.h> + +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]; +}; + +/* + * Base number ranges for entity functions + * + * NOTE: Userspace should not rely on these ranges to identify a group + * of function types, as newer functions can be added with any name within + * the full u32 range. + * + * Some older functions use the MEDIA_ENT_F_OLD_*_BASE range. Do not + * change this, this is for backwards compatibility. When adding new + * functions always use MEDIA_ENT_F_BASE. + */ +#define MEDIA_ENT_F_BASE 0x00000000 +#define MEDIA_ENT_F_OLD_BASE 0x00010000 +#define MEDIA_ENT_F_OLD_SUBDEV_BASE 0x00020000 + +/* + * Initial value to be used when a new entity is created + * Drivers should change it to something useful. + */ +#define MEDIA_ENT_F_UNKNOWN MEDIA_ENT_F_BASE + +/* + * Subdevs are initialized with MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN in order + * to preserve backward compatibility. Drivers must change to the proper + * subdev type before registering the entity. + */ +#define MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN MEDIA_ENT_F_OLD_SUBDEV_BASE + +/* + * DVB entity functions + */ +#define MEDIA_ENT_F_DTV_DEMOD (MEDIA_ENT_F_BASE + 0x00001) +#define MEDIA_ENT_F_TS_DEMUX (MEDIA_ENT_F_BASE + 0x00002) +#define MEDIA_ENT_F_DTV_CA (MEDIA_ENT_F_BASE + 0x00003) +#define MEDIA_ENT_F_DTV_NET_DECAP (MEDIA_ENT_F_BASE + 0x00004) + +/* + * I/O entity functions + */ +#define MEDIA_ENT_F_IO_V4L (MEDIA_ENT_F_OLD_BASE + 1) +#define MEDIA_ENT_F_IO_DTV (MEDIA_ENT_F_BASE + 0x01001) +#define MEDIA_ENT_F_IO_VBI (MEDIA_ENT_F_BASE + 0x01002) +#define MEDIA_ENT_F_IO_SWRADIO (MEDIA_ENT_F_BASE + 0x01003) + +/* + * Sensor functions + */ +#define MEDIA_ENT_F_CAM_SENSOR (MEDIA_ENT_F_OLD_SUBDEV_BASE + 1) +#define MEDIA_ENT_F_FLASH (MEDIA_ENT_F_OLD_SUBDEV_BASE + 2) +#define MEDIA_ENT_F_LENS (MEDIA_ENT_F_OLD_SUBDEV_BASE + 3) + +/* + * Digital TV, analog TV, radio and/or software defined radio tuner functions. + * + * It is a responsibility of the master/bridge drivers to add connectors + * and links for MEDIA_ENT_F_TUNER. Please notice that some old tuners + * may require the usage of separate I2C chips to decode analog TV signals, + * when the master/bridge chipset doesn't have its own TV standard decoder. + * On such cases, the IF-PLL staging is mapped via one or two entities: + * MEDIA_ENT_F_IF_VID_DECODER and/or MEDIA_ENT_F_IF_AUD_DECODER. + */ +#define MEDIA_ENT_F_TUNER (MEDIA_ENT_F_OLD_SUBDEV_BASE + 5) + +/* + * Analog TV IF-PLL decoder functions + * + * It is a responsibility of the master/bridge drivers to create links + * for MEDIA_ENT_F_IF_VID_DECODER and MEDIA_ENT_F_IF_AUD_DECODER. + */ +#define MEDIA_ENT_F_IF_VID_DECODER (MEDIA_ENT_F_BASE + 0x02001) +#define MEDIA_ENT_F_IF_AUD_DECODER (MEDIA_ENT_F_BASE + 0x02002) + +/* + * Audio entity functions + */ +#define MEDIA_ENT_F_AUDIO_CAPTURE (MEDIA_ENT_F_BASE + 0x03001) +#define MEDIA_ENT_F_AUDIO_PLAYBACK (MEDIA_ENT_F_BASE + 0x03002) +#define MEDIA_ENT_F_AUDIO_MIXER (MEDIA_ENT_F_BASE + 0x03003) + +/* + * Processing entity functions + */ +#define MEDIA_ENT_F_PROC_VIDEO_COMPOSER (MEDIA_ENT_F_BASE + 0x4001) +#define MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER (MEDIA_ENT_F_BASE + 0x4002) +#define MEDIA_ENT_F_PROC_VIDEO_PIXEL_ENC_CONV (MEDIA_ENT_F_BASE + 0x4003) +#define MEDIA_ENT_F_PROC_VIDEO_LUT (MEDIA_ENT_F_BASE + 0x4004) +#define MEDIA_ENT_F_PROC_VIDEO_SCALER (MEDIA_ENT_F_BASE + 0x4005) +#define MEDIA_ENT_F_PROC_VIDEO_STATISTICS (MEDIA_ENT_F_BASE + 0x4006) +#define MEDIA_ENT_F_PROC_VIDEO_ENCODER (MEDIA_ENT_F_BASE + 0x4007) +#define MEDIA_ENT_F_PROC_VIDEO_DECODER (MEDIA_ENT_F_BASE + 0x4008) + +/* + * Switch and bridge entity functions + */ +#define MEDIA_ENT_F_VID_MUX (MEDIA_ENT_F_BASE + 0x5001) +#define MEDIA_ENT_F_VID_IF_BRIDGE (MEDIA_ENT_F_BASE + 0x5002) + +/* + * Video decoder/encoder functions + */ +#define MEDIA_ENT_F_ATV_DECODER (MEDIA_ENT_F_OLD_SUBDEV_BASE + 4) +#define MEDIA_ENT_F_DV_DECODER (MEDIA_ENT_F_BASE + 0x6001) +#define MEDIA_ENT_F_DV_ENCODER (MEDIA_ENT_F_BASE + 0x6002) + +/* Entity flags */ +#define MEDIA_ENT_FL_DEFAULT (1 << 0) +#define MEDIA_ENT_FL_CONNECTOR (1 << 1) + +/* OR with the entity id value to find the next entity */ +#define MEDIA_ENT_ID_FLAG_NEXT (1 << 31) + +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; + + /* + * 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). + */ + struct { + __u32 card; + __u32 device; + __u32 subdevice; + } alsa; + + /* + * DEPRECATED: previous node specifications. Kept just to + * avoid breaking compilation. Use media_entity_desc.dev + * instead. + */ + struct { + __u32 major; + __u32 minor; + } v4l; + struct { + __u32 major; + __u32 minor; + } fb; + 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) + +#define MEDIA_LNK_FL_LINK_TYPE (0xf << 28) +# define MEDIA_LNK_FL_DATA_LINK (0 << 28) +# define MEDIA_LNK_FL_INTERFACE_LINK (1 << 28) + +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 *pads; + /* Should have enough room for links elements */ + struct media_link_desc *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) +#define MEDIA_INTF_T_V4L_TOUCH (MEDIA_INTF_T_V4L_BASE + 5) + + +/* + * MC next gen API definitions + */ + +/* + * Appeared in 4.19.0. + * + * The media_version argument comes from the media_version field in + * struct media_device_info. + */ +#define MEDIA_V2_ENTITY_HAS_FLAGS(media_version) \ + ((media_version) >= ((4 << 16) | (19 << 8) | 0)) + +struct media_v2_entity { + __u32 id; + char name[64]; + __u32 function; /* Main function of the entity */ + __u32 flags; + __u32 reserved[5]; +} __attribute__ ((packed)); + +/* Should match the specific fields at media_intf_devnode */ +struct media_v2_intf_devnode { + __u32 major; + __u32 minor; +} __attribute__ ((packed)); + +struct media_v2_interface { + __u32 id; + __u32 intf_type; + __u32 flags; + __u32 reserved[9]; + + union { + struct media_v2_intf_devnode devnode; + __u32 raw[16]; + }; +} __attribute__ ((packed)); + +/* + * Appeared in 4.19.0. + * + * The media_version argument comes from the media_version field in + * struct media_device_info. + */ +#define MEDIA_V2_PAD_HAS_INDEX(media_version) \ + ((media_version) >= ((4 << 16) | (19 << 8) | 0)) + +struct media_v2_pad { + __u32 id; + __u32 entity_id; + __u32 flags; + __u32 index; + __u32 reserved[4]; +} __attribute__ ((packed)); + +struct media_v2_link { + __u32 id; + __u32 source_id; + __u32 sink_id; + __u32 flags; + __u32 reserved[6]; +} __attribute__ ((packed)); + +struct media_v2_topology { + __u64 topology_version; + + __u32 num_entities; + __u32 reserved1; + __u64 ptr_entities; + + __u32 num_interfaces; + __u32 reserved2; + __u64 ptr_interfaces; + + __u32 num_pads; + __u32 reserved3; + __u64 ptr_pads; + + __u32 num_links; + __u32 reserved4; + __u64 ptr_links; +} __attribute__ ((packed)); + +/* ioctls */ + +#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) +#define MEDIA_IOC_G_TOPOLOGY _IOWR('|', 0x04, struct media_v2_topology) + + +/* + * Legacy symbols used to avoid userspace compilation breakages. + * Do not use any of this in new applications! + * + * Those symbols map the entity function into types and should be + * used only on legacy programs for legacy hardware. Don't rely + * on those for MEDIA_IOC_G_TOPOLOGY. + */ +#define MEDIA_ENT_TYPE_SHIFT 16 +#define MEDIA_ENT_TYPE_MASK 0x00ff0000 +#define MEDIA_ENT_SUBTYPE_MASK 0x0000ffff + +#define MEDIA_ENT_T_DEVNODE_UNKNOWN (MEDIA_ENT_F_OLD_BASE | \ + MEDIA_ENT_SUBTYPE_MASK) + +#define MEDIA_ENT_T_DEVNODE MEDIA_ENT_F_OLD_BASE +#define MEDIA_ENT_T_DEVNODE_V4L MEDIA_ENT_F_IO_V4L +#define MEDIA_ENT_T_DEVNODE_FB (MEDIA_ENT_F_OLD_BASE + 2) +#define MEDIA_ENT_T_DEVNODE_ALSA (MEDIA_ENT_F_OLD_BASE + 3) +#define MEDIA_ENT_T_DEVNODE_DVB (MEDIA_ENT_F_OLD_BASE + 4) + +#define MEDIA_ENT_T_UNKNOWN MEDIA_ENT_F_UNKNOWN +#define MEDIA_ENT_T_V4L2_VIDEO MEDIA_ENT_F_IO_V4L +#define MEDIA_ENT_T_V4L2_SUBDEV MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN +#define MEDIA_ENT_T_V4L2_SUBDEV_SENSOR MEDIA_ENT_F_CAM_SENSOR +#define MEDIA_ENT_T_V4L2_SUBDEV_FLASH MEDIA_ENT_F_FLASH +#define MEDIA_ENT_T_V4L2_SUBDEV_LENS MEDIA_ENT_F_LENS +#define MEDIA_ENT_T_V4L2_SUBDEV_DECODER MEDIA_ENT_F_ATV_DECODER +#define MEDIA_ENT_T_V4L2_SUBDEV_TUNER MEDIA_ENT_F_TUNER + +#define MEDIA_ENT_F_DTV_DECODER MEDIA_ENT_F_DV_DECODER + +/* + * There is still no ALSA support in the media controller. These + * defines should not have been added and we leave them here only + * in case some application tries to use these defines. + */ +#define MEDIA_INTF_T_ALSA_BASE 0x00000300 +#define MEDIA_INTF_T_ALSA_PCM_CAPTURE (MEDIA_INTF_T_ALSA_BASE) +#define MEDIA_INTF_T_ALSA_PCM_PLAYBACK (MEDIA_INTF_T_ALSA_BASE + 1) +#define MEDIA_INTF_T_ALSA_CONTROL (MEDIA_INTF_T_ALSA_BASE + 2) +#define MEDIA_INTF_T_ALSA_COMPRESS (MEDIA_INTF_T_ALSA_BASE + 3) +#define MEDIA_INTF_T_ALSA_RAWMIDI (MEDIA_INTF_T_ALSA_BASE + 4) +#define MEDIA_INTF_T_ALSA_HWDEP (MEDIA_INTF_T_ALSA_BASE + 5) +#define MEDIA_INTF_T_ALSA_SEQUENCER (MEDIA_INTF_T_ALSA_BASE + 6) +#define MEDIA_INTF_T_ALSA_TIMER (MEDIA_INTF_T_ALSA_BASE + 7) + +/* Obsolete symbol for media_version, no longer used in the kernel */ +#define MEDIA_API_VERSION ((0 << 16) | (1 << 8) | 0) + + +#endif /* __LINUX_MEDIA_H */ |