root/include/uapi/linux/media.h

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 /*
   3  * Multimedia device API
   4  *
   5  * Copyright (C) 2010 Nokia Corporation
   6  *
   7  * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
   8  *           Sakari Ailus <sakari.ailus@iki.fi>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  */
  19 
  20 #ifndef __LINUX_MEDIA_H
  21 #define __LINUX_MEDIA_H
  22 
  23 #ifndef __KERNEL__
  24 #include <stdint.h>
  25 #endif
  26 #include <linux/ioctl.h>
  27 #include <linux/types.h>
  28 
  29 struct media_device_info {
  30         char driver[16];
  31         char model[32];
  32         char serial[40];
  33         char bus_info[32];
  34         __u32 media_version;
  35         __u32 hw_revision;
  36         __u32 driver_version;
  37         __u32 reserved[31];
  38 };
  39 
  40 /*
  41  * Base number ranges for entity functions
  42  *
  43  * NOTE: Userspace should not rely on these ranges to identify a group
  44  * of function types, as newer functions can be added with any name within
  45  * the full u32 range.
  46  *
  47  * Some older functions use the MEDIA_ENT_F_OLD_*_BASE range. Do not
  48  * change this, this is for backwards compatibility. When adding new
  49  * functions always use MEDIA_ENT_F_BASE.
  50  */
  51 #define MEDIA_ENT_F_BASE                        0x00000000
  52 #define MEDIA_ENT_F_OLD_BASE                    0x00010000
  53 #define MEDIA_ENT_F_OLD_SUBDEV_BASE             0x00020000
  54 
  55 /*
  56  * Initial value to be used when a new entity is created
  57  * Drivers should change it to something useful.
  58  */
  59 #define MEDIA_ENT_F_UNKNOWN                     MEDIA_ENT_F_BASE
  60 
  61 /*
  62  * Subdevs are initialized with MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN in order
  63  * to preserve backward compatibility. Drivers must change to the proper
  64  * subdev type before registering the entity.
  65  */
  66 #define MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN         MEDIA_ENT_F_OLD_SUBDEV_BASE
  67 
  68 /*
  69  * DVB entity functions
  70  */
  71 #define MEDIA_ENT_F_DTV_DEMOD                   (MEDIA_ENT_F_BASE + 0x00001)
  72 #define MEDIA_ENT_F_TS_DEMUX                    (MEDIA_ENT_F_BASE + 0x00002)
  73 #define MEDIA_ENT_F_DTV_CA                      (MEDIA_ENT_F_BASE + 0x00003)
  74 #define MEDIA_ENT_F_DTV_NET_DECAP               (MEDIA_ENT_F_BASE + 0x00004)
  75 
  76 /*
  77  * I/O entity functions
  78  */
  79 #define MEDIA_ENT_F_IO_V4L                      (MEDIA_ENT_F_OLD_BASE + 1)
  80 #define MEDIA_ENT_F_IO_DTV                      (MEDIA_ENT_F_BASE + 0x01001)
  81 #define MEDIA_ENT_F_IO_VBI                      (MEDIA_ENT_F_BASE + 0x01002)
  82 #define MEDIA_ENT_F_IO_SWRADIO                  (MEDIA_ENT_F_BASE + 0x01003)
  83 
  84 /*
  85  * Sensor functions
  86  */
  87 #define MEDIA_ENT_F_CAM_SENSOR                  (MEDIA_ENT_F_OLD_SUBDEV_BASE + 1)
  88 #define MEDIA_ENT_F_FLASH                       (MEDIA_ENT_F_OLD_SUBDEV_BASE + 2)
  89 #define MEDIA_ENT_F_LENS                        (MEDIA_ENT_F_OLD_SUBDEV_BASE + 3)
  90 
  91 /*
  92  * Digital TV, analog TV, radio and/or software defined radio tuner functions.
  93  *
  94  * It is a responsibility of the master/bridge drivers to add connectors
  95  * and links for MEDIA_ENT_F_TUNER. Please notice that some old tuners
  96  * may require the usage of separate I2C chips to decode analog TV signals,
  97  * when the master/bridge chipset doesn't have its own TV standard decoder.
  98  * On such cases, the IF-PLL staging is mapped via one or two entities:
  99  * MEDIA_ENT_F_IF_VID_DECODER and/or MEDIA_ENT_F_IF_AUD_DECODER.
 100  */
 101 #define MEDIA_ENT_F_TUNER                       (MEDIA_ENT_F_OLD_SUBDEV_BASE + 5)
 102 
 103 /*
 104  * Analog TV IF-PLL decoder functions
 105  *
 106  * It is a responsibility of the master/bridge drivers to create links
 107  * for MEDIA_ENT_F_IF_VID_DECODER and MEDIA_ENT_F_IF_AUD_DECODER.
 108  */
 109 #define MEDIA_ENT_F_IF_VID_DECODER              (MEDIA_ENT_F_BASE + 0x02001)
 110 #define MEDIA_ENT_F_IF_AUD_DECODER              (MEDIA_ENT_F_BASE + 0x02002)
 111 
 112 /*
 113  * Audio entity functions
 114  */
 115 #define MEDIA_ENT_F_AUDIO_CAPTURE               (MEDIA_ENT_F_BASE + 0x03001)
 116 #define MEDIA_ENT_F_AUDIO_PLAYBACK              (MEDIA_ENT_F_BASE + 0x03002)
 117 #define MEDIA_ENT_F_AUDIO_MIXER                 (MEDIA_ENT_F_BASE + 0x03003)
 118 
 119 /*
 120  * Processing entity functions
 121  */
 122 #define MEDIA_ENT_F_PROC_VIDEO_COMPOSER         (MEDIA_ENT_F_BASE + 0x4001)
 123 #define MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER  (MEDIA_ENT_F_BASE + 0x4002)
 124 #define MEDIA_ENT_F_PROC_VIDEO_PIXEL_ENC_CONV   (MEDIA_ENT_F_BASE + 0x4003)
 125 #define MEDIA_ENT_F_PROC_VIDEO_LUT              (MEDIA_ENT_F_BASE + 0x4004)
 126 #define MEDIA_ENT_F_PROC_VIDEO_SCALER           (MEDIA_ENT_F_BASE + 0x4005)
 127 #define MEDIA_ENT_F_PROC_VIDEO_STATISTICS       (MEDIA_ENT_F_BASE + 0x4006)
 128 #define MEDIA_ENT_F_PROC_VIDEO_ENCODER          (MEDIA_ENT_F_BASE + 0x4007)
 129 #define MEDIA_ENT_F_PROC_VIDEO_DECODER          (MEDIA_ENT_F_BASE + 0x4008)
 130 
 131 /*
 132  * Switch and bridge entity functions
 133  */
 134 #define MEDIA_ENT_F_VID_MUX                     (MEDIA_ENT_F_BASE + 0x5001)
 135 #define MEDIA_ENT_F_VID_IF_BRIDGE               (MEDIA_ENT_F_BASE + 0x5002)
 136 
 137 /*
 138  * Video decoder/encoder functions
 139  */
 140 #define MEDIA_ENT_F_ATV_DECODER                 (MEDIA_ENT_F_OLD_SUBDEV_BASE + 4)
 141 #define MEDIA_ENT_F_DV_DECODER                  (MEDIA_ENT_F_BASE + 0x6001)
 142 #define MEDIA_ENT_F_DV_ENCODER                  (MEDIA_ENT_F_BASE + 0x6002)
 143 
 144 /* Entity flags */
 145 #define MEDIA_ENT_FL_DEFAULT                    (1 << 0)
 146 #define MEDIA_ENT_FL_CONNECTOR                  (1 << 1)
 147 
 148 /* OR with the entity id value to find the next entity */
 149 #define MEDIA_ENT_ID_FLAG_NEXT                  (1U << 31)
 150 
 151 struct media_entity_desc {
 152         __u32 id;
 153         char name[32];
 154         __u32 type;
 155         __u32 revision;
 156         __u32 flags;
 157         __u32 group_id;
 158         __u16 pads;
 159         __u16 links;
 160 
 161         __u32 reserved[4];
 162 
 163         union {
 164                 /* Node specifications */
 165                 struct {
 166                         __u32 major;
 167                         __u32 minor;
 168                 } dev;
 169 
 170 #if !defined(__KERNEL__)
 171                 /*
 172                  * TODO: this shouldn't have been added without
 173                  * actual drivers that use this. When the first real driver
 174                  * appears that sets this information, special attention
 175                  * should be given whether this information is 1) enough, and
 176                  * 2) can deal with udev rules that rename devices. The struct
 177                  * dev would not be sufficient for this since that does not
 178                  * contain the subdevice information. In addition, struct dev
 179                  * can only refer to a single device, and not to multiple (e.g.
 180                  * pcm and mixer devices).
 181                  */
 182                 struct {
 183                         __u32 card;
 184                         __u32 device;
 185                         __u32 subdevice;
 186                 } alsa;
 187 
 188                 /*
 189                  * DEPRECATED: previous node specifications. Kept just to
 190                  * avoid breaking compilation. Use media_entity_desc.dev
 191                  * instead.
 192                  */
 193                 struct {
 194                         __u32 major;
 195                         __u32 minor;
 196                 } v4l;
 197                 struct {
 198                         __u32 major;
 199                         __u32 minor;
 200                 } fb;
 201                 int dvb;
 202 #endif
 203 
 204                 /* Sub-device specifications */
 205                 /* Nothing needed yet */
 206                 __u8 raw[184];
 207         };
 208 };
 209 
 210 #define MEDIA_PAD_FL_SINK                       (1 << 0)
 211 #define MEDIA_PAD_FL_SOURCE                     (1 << 1)
 212 #define MEDIA_PAD_FL_MUST_CONNECT               (1 << 2)
 213 
 214 struct media_pad_desc {
 215         __u32 entity;           /* entity ID */
 216         __u16 index;            /* pad index */
 217         __u32 flags;            /* pad flags */
 218         __u32 reserved[2];
 219 };
 220 
 221 #define MEDIA_LNK_FL_ENABLED                    (1 << 0)
 222 #define MEDIA_LNK_FL_IMMUTABLE                  (1 << 1)
 223 #define MEDIA_LNK_FL_DYNAMIC                    (1 << 2)
 224 
 225 #define MEDIA_LNK_FL_LINK_TYPE                  (0xf << 28)
 226 #  define MEDIA_LNK_FL_DATA_LINK                (0 << 28)
 227 #  define MEDIA_LNK_FL_INTERFACE_LINK           (1 << 28)
 228 
 229 struct media_link_desc {
 230         struct media_pad_desc source;
 231         struct media_pad_desc sink;
 232         __u32 flags;
 233         __u32 reserved[2];
 234 };
 235 
 236 struct media_links_enum {
 237         __u32 entity;
 238         /* Should have enough room for pads elements */
 239         struct media_pad_desc __user *pads;
 240         /* Should have enough room for links elements */
 241         struct media_link_desc __user *links;
 242         __u32 reserved[4];
 243 };
 244 
 245 /* Interface type ranges */
 246 
 247 #define MEDIA_INTF_T_DVB_BASE                   0x00000100
 248 #define MEDIA_INTF_T_V4L_BASE                   0x00000200
 249 
 250 /* Interface types */
 251 
 252 #define MEDIA_INTF_T_DVB_FE                     (MEDIA_INTF_T_DVB_BASE)
 253 #define MEDIA_INTF_T_DVB_DEMUX                  (MEDIA_INTF_T_DVB_BASE + 1)
 254 #define MEDIA_INTF_T_DVB_DVR                    (MEDIA_INTF_T_DVB_BASE + 2)
 255 #define MEDIA_INTF_T_DVB_CA                     (MEDIA_INTF_T_DVB_BASE + 3)
 256 #define MEDIA_INTF_T_DVB_NET                    (MEDIA_INTF_T_DVB_BASE + 4)
 257 
 258 #define MEDIA_INTF_T_V4L_VIDEO                  (MEDIA_INTF_T_V4L_BASE)
 259 #define MEDIA_INTF_T_V4L_VBI                    (MEDIA_INTF_T_V4L_BASE + 1)
 260 #define MEDIA_INTF_T_V4L_RADIO                  (MEDIA_INTF_T_V4L_BASE + 2)
 261 #define MEDIA_INTF_T_V4L_SUBDEV                 (MEDIA_INTF_T_V4L_BASE + 3)
 262 #define MEDIA_INTF_T_V4L_SWRADIO                (MEDIA_INTF_T_V4L_BASE + 4)
 263 #define MEDIA_INTF_T_V4L_TOUCH                  (MEDIA_INTF_T_V4L_BASE + 5)
 264 
 265 #define MEDIA_INTF_T_ALSA_BASE                  0x00000300
 266 #define MEDIA_INTF_T_ALSA_PCM_CAPTURE           (MEDIA_INTF_T_ALSA_BASE)
 267 #define MEDIA_INTF_T_ALSA_PCM_PLAYBACK          (MEDIA_INTF_T_ALSA_BASE + 1)
 268 #define MEDIA_INTF_T_ALSA_CONTROL               (MEDIA_INTF_T_ALSA_BASE + 2)
 269 
 270 #if defined(__KERNEL__)
 271 
 272 /*
 273  * Connector functions
 274  *
 275  * For now these should not be used in userspace, as some definitions may
 276  * change.
 277  *
 278  * It is the responsibility of the entity drivers to add connectors and links.
 279  */
 280 #define MEDIA_ENT_F_CONN_RF                     (MEDIA_ENT_F_BASE + 0x30001)
 281 #define MEDIA_ENT_F_CONN_SVIDEO                 (MEDIA_ENT_F_BASE + 0x30002)
 282 #define MEDIA_ENT_F_CONN_COMPOSITE              (MEDIA_ENT_F_BASE + 0x30003)
 283 
 284 #endif
 285 
 286 /*
 287  * MC next gen API definitions
 288  */
 289 
 290 /*
 291  * Appeared in 4.19.0.
 292  *
 293  * The media_version argument comes from the media_version field in
 294  * struct media_device_info.
 295  */
 296 #define MEDIA_V2_ENTITY_HAS_FLAGS(media_version) \
 297         ((media_version) >= ((4 << 16) | (19 << 8) | 0))
 298 
 299 struct media_v2_entity {
 300         __u32 id;
 301         char name[64];
 302         __u32 function;         /* Main function of the entity */
 303         __u32 flags;
 304         __u32 reserved[5];
 305 } __attribute__ ((packed));
 306 
 307 /* Should match the specific fields at media_intf_devnode */
 308 struct media_v2_intf_devnode {
 309         __u32 major;
 310         __u32 minor;
 311 } __attribute__ ((packed));
 312 
 313 struct media_v2_interface {
 314         __u32 id;
 315         __u32 intf_type;
 316         __u32 flags;
 317         __u32 reserved[9];
 318 
 319         union {
 320                 struct media_v2_intf_devnode devnode;
 321                 __u32 raw[16];
 322         };
 323 } __attribute__ ((packed));
 324 
 325 /*
 326  * Appeared in 4.19.0.
 327  *
 328  * The media_version argument comes from the media_version field in
 329  * struct media_device_info.
 330  */
 331 #define MEDIA_V2_PAD_HAS_INDEX(media_version) \
 332         ((media_version) >= ((4 << 16) | (19 << 8) | 0))
 333 
 334 struct media_v2_pad {
 335         __u32 id;
 336         __u32 entity_id;
 337         __u32 flags;
 338         __u32 index;
 339         __u32 reserved[4];
 340 } __attribute__ ((packed));
 341 
 342 struct media_v2_link {
 343         __u32 id;
 344         __u32 source_id;
 345         __u32 sink_id;
 346         __u32 flags;
 347         __u32 reserved[6];
 348 } __attribute__ ((packed));
 349 
 350 struct media_v2_topology {
 351         __u64 topology_version;
 352 
 353         __u32 num_entities;
 354         __u32 reserved1;
 355         __u64 ptr_entities;
 356 
 357         __u32 num_interfaces;
 358         __u32 reserved2;
 359         __u64 ptr_interfaces;
 360 
 361         __u32 num_pads;
 362         __u32 reserved3;
 363         __u64 ptr_pads;
 364 
 365         __u32 num_links;
 366         __u32 reserved4;
 367         __u64 ptr_links;
 368 } __attribute__ ((packed));
 369 
 370 /* ioctls */
 371 
 372 #define MEDIA_IOC_DEVICE_INFO   _IOWR('|', 0x00, struct media_device_info)
 373 #define MEDIA_IOC_ENUM_ENTITIES _IOWR('|', 0x01, struct media_entity_desc)
 374 #define MEDIA_IOC_ENUM_LINKS    _IOWR('|', 0x02, struct media_links_enum)
 375 #define MEDIA_IOC_SETUP_LINK    _IOWR('|', 0x03, struct media_link_desc)
 376 #define MEDIA_IOC_G_TOPOLOGY    _IOWR('|', 0x04, struct media_v2_topology)
 377 #define MEDIA_IOC_REQUEST_ALLOC _IOR ('|', 0x05, int)
 378 
 379 /*
 380  * These ioctls are called on the request file descriptor as returned
 381  * by MEDIA_IOC_REQUEST_ALLOC.
 382  */
 383 #define MEDIA_REQUEST_IOC_QUEUE         _IO('|',  0x80)
 384 #define MEDIA_REQUEST_IOC_REINIT        _IO('|',  0x81)
 385 
 386 #ifndef __KERNEL__
 387 
 388 /*
 389  * Legacy symbols used to avoid userspace compilation breakages.
 390  * Do not use any of this in new applications!
 391  *
 392  * Those symbols map the entity function into types and should be
 393  * used only on legacy programs for legacy hardware. Don't rely
 394  * on those for MEDIA_IOC_G_TOPOLOGY.
 395  */
 396 #define MEDIA_ENT_TYPE_SHIFT                    16
 397 #define MEDIA_ENT_TYPE_MASK                     0x00ff0000
 398 #define MEDIA_ENT_SUBTYPE_MASK                  0x0000ffff
 399 
 400 #define MEDIA_ENT_T_DEVNODE_UNKNOWN             (MEDIA_ENT_F_OLD_BASE | \
 401                                                  MEDIA_ENT_SUBTYPE_MASK)
 402 
 403 #define MEDIA_ENT_T_DEVNODE                     MEDIA_ENT_F_OLD_BASE
 404 #define MEDIA_ENT_T_DEVNODE_V4L                 MEDIA_ENT_F_IO_V4L
 405 #define MEDIA_ENT_T_DEVNODE_FB                  (MEDIA_ENT_F_OLD_BASE + 2)
 406 #define MEDIA_ENT_T_DEVNODE_ALSA                (MEDIA_ENT_F_OLD_BASE + 3)
 407 #define MEDIA_ENT_T_DEVNODE_DVB                 (MEDIA_ENT_F_OLD_BASE + 4)
 408 
 409 #define MEDIA_ENT_T_UNKNOWN                     MEDIA_ENT_F_UNKNOWN
 410 #define MEDIA_ENT_T_V4L2_VIDEO                  MEDIA_ENT_F_IO_V4L
 411 #define MEDIA_ENT_T_V4L2_SUBDEV                 MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN
 412 #define MEDIA_ENT_T_V4L2_SUBDEV_SENSOR          MEDIA_ENT_F_CAM_SENSOR
 413 #define MEDIA_ENT_T_V4L2_SUBDEV_FLASH           MEDIA_ENT_F_FLASH
 414 #define MEDIA_ENT_T_V4L2_SUBDEV_LENS            MEDIA_ENT_F_LENS
 415 #define MEDIA_ENT_T_V4L2_SUBDEV_DECODER         MEDIA_ENT_F_ATV_DECODER
 416 #define MEDIA_ENT_T_V4L2_SUBDEV_TUNER           MEDIA_ENT_F_TUNER
 417 
 418 #define MEDIA_ENT_F_DTV_DECODER                 MEDIA_ENT_F_DV_DECODER
 419 
 420 /*
 421  * There is still no full ALSA support in the media controller. These
 422  * defines should not have been added and we leave them here only
 423  * in case some application tries to use these defines.
 424  *
 425  * The ALSA defines that are in use have been moved into __KERNEL__
 426  * scope. As support gets added to these interface types, they should
 427  * be moved into __KERNEL__ scope with the code that uses them.
 428  */
 429 #define MEDIA_INTF_T_ALSA_COMPRESS             (MEDIA_INTF_T_ALSA_BASE + 3)
 430 #define MEDIA_INTF_T_ALSA_RAWMIDI              (MEDIA_INTF_T_ALSA_BASE + 4)
 431 #define MEDIA_INTF_T_ALSA_HWDEP                (MEDIA_INTF_T_ALSA_BASE + 5)
 432 #define MEDIA_INTF_T_ALSA_SEQUENCER            (MEDIA_INTF_T_ALSA_BASE + 6)
 433 #define MEDIA_INTF_T_ALSA_TIMER                (MEDIA_INTF_T_ALSA_BASE + 7)
 434 
 435 /* Obsolete symbol for media_version, no longer used in the kernel */
 436 #define MEDIA_API_VERSION                       ((0 << 16) | (1 << 8) | 0)
 437 
 438 #endif
 439 
 440 #endif /* __LINUX_MEDIA_H */