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 */ 441