1 /* 2 * Advanced Linux Sound Architecture - ALSA - Driver 3 * Copyright (c) 1994-2003 by Jaroslav Kysela <perex (at) perex.cz>, 4 * Abramo Bagnara <abramo (at) alsa-project.org> 5 * 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20 * 21 */ 22 23 #ifndef __SOUND_ASOUND_H 24 #define __SOUND_ASOUND_H 25 26 #include <linux/types.h> 27 28 29 /* 30 * protocol version 31 */ 32 33 #define SNDRV_PROTOCOL_VERSION(major, minor, subminor) (((major)<<16)|((minor)<<8)|(subminor)) 34 #define SNDRV_PROTOCOL_MAJOR(version) (((version)>>16)&0xffff) 35 #define SNDRV_PROTOCOL_MINOR(version) (((version)>>8)&0xff) 36 #define SNDRV_PROTOCOL_MICRO(version) ((version)&0xff) 37 #define SNDRV_PROTOCOL_INCOMPATIBLE(kversion, uversion) \ 38 (SNDRV_PROTOCOL_MAJOR(kversion) != SNDRV_PROTOCOL_MAJOR(uversion) || \ 39 (SNDRV_PROTOCOL_MAJOR(kversion) == SNDRV_PROTOCOL_MAJOR(uversion) && \ 40 SNDRV_PROTOCOL_MINOR(kversion) != SNDRV_PROTOCOL_MINOR(uversion))) 41 42 /**************************************************************************** 43 * * 44 * Digital audio interface * 45 * * 46 ****************************************************************************/ 47 48 struct snd_aes_iec958 { 49 unsigned char status[24]; /* AES/IEC958 channel status bits */ 50 unsigned char subcode[147]; /* AES/IEC958 subcode bits */ 51 unsigned char pad; /* nothing */ 52 unsigned char dig_subframe[4]; /* AES/IEC958 subframe bits */ 53 }; 54 55 /**************************************************************************** 56 * * 57 * Section for driver hardware dependent interface - /dev/snd/hw? * 58 * * 59 ****************************************************************************/ 60 61 #define SNDRV_HWDEP_VERSION SNDRV_PROTOCOL_VERSION(1, 0, 1) 62 63 enum { 64 SNDRV_HWDEP_IFACE_OPL2 = 0, 65 SNDRV_HWDEP_IFACE_OPL3, 66 SNDRV_HWDEP_IFACE_OPL4, 67 SNDRV_HWDEP_IFACE_SB16CSP, /* Creative Signal Processor */ 68 SNDRV_HWDEP_IFACE_EMU10K1, /* FX8010 processor in EMU10K1 chip */ 69 SNDRV_HWDEP_IFACE_YSS225, /* Yamaha FX processor */ 70 SNDRV_HWDEP_IFACE_ICS2115, /* Wavetable synth */ 71 SNDRV_HWDEP_IFACE_SSCAPE, /* Ensoniq SoundScape ISA card (MC68EC000) */ 72 SNDRV_HWDEP_IFACE_VX, /* Digigram VX cards */ 73 SNDRV_HWDEP_IFACE_MIXART, /* Digigram miXart cards */ 74 SNDRV_HWDEP_IFACE_USX2Y, /* Tascam US122, US224 & US428 usb */ 75 SNDRV_HWDEP_IFACE_EMUX_WAVETABLE, /* EmuX wavetable */ 76 SNDRV_HWDEP_IFACE_BLUETOOTH, /* Bluetooth audio */ 77 SNDRV_HWDEP_IFACE_USX2Y_PCM, /* Tascam US122, US224 & US428 rawusb pcm */ 78 SNDRV_HWDEP_IFACE_PCXHR, /* Digigram PCXHR */ 79 SNDRV_HWDEP_IFACE_SB_RC, /* SB Extigy/Audigy2NX remote control */ 80 SNDRV_HWDEP_IFACE_HDA, /* HD-audio */ 81 SNDRV_HWDEP_IFACE_USB_STREAM, /* direct access to usb stream */ 82 83 /* Don't forget to change the following: */ 84 SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_USB_STREAM 85 }; 86 87 struct snd_hwdep_info { 88 unsigned int device; /* WR: device number */ 89 int card; /* R: card number */ 90 unsigned char id[64]; /* ID (user selectable) */ 91 unsigned char name[80]; /* hwdep name */ 92 int iface; /* hwdep interface */ 93 unsigned char reserved[64]; /* reserved for future */ 94 }; 95 96 /* generic DSP loader */ 97 struct snd_hwdep_dsp_status { 98 unsigned int version; /* R: driver-specific version */ 99 unsigned char id[32]; /* R: driver-specific ID string */ 100 unsigned int num_dsps; /* R: number of DSP images to transfer */ 101 unsigned int dsp_loaded; /* R: bit flags indicating the loaded DSPs */ 102 unsigned int chip_ready; /* R: 1 = initialization finished */ 103 unsigned char reserved[16]; /* reserved for future use */ 104 }; 105 106 struct snd_hwdep_dsp_image { 107 unsigned int index; /* W: DSP index */ 108 unsigned char name[64]; /* W: ID (e.g. file name) */ 109 unsigned char *image; /* W: binary image */ 110 size_t length; /* W: size of image in bytes */ 111 unsigned long driver_data; /* W: driver-specific data */ 112 }; 113 114 #define SNDRV_HWDEP_IOCTL_PVERSION _IOR ('H', 0x00, int) 115 #define SNDRV_HWDEP_IOCTL_INFO _IOR ('H', 0x01, struct snd_hwdep_info) 116 #define SNDRV_HWDEP_IOCTL_DSP_STATUS _IOR('H', 0x02, struct snd_hwdep_dsp_status) 117 #define SNDRV_HWDEP_IOCTL_DSP_LOAD _IOW('H', 0x03, struct snd_hwdep_dsp_image) 118 119 /***************************************************************************** 120 * * 121 * Digital Audio (PCM) interface - /dev/snd/pcm?? * 122 * * 123 *****************************************************************************/ 124 125 #define SNDRV_PCM_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 10) 126 127 typedef unsigned long snd_pcm_uframes_t; 128 typedef signed long snd_pcm_sframes_t; 129 130 enum { 131 SNDRV_PCM_CLASS_GENERIC = 0, /* standard mono or stereo device */ 132 SNDRV_PCM_CLASS_MULTI, /* multichannel device */ 133 SNDRV_PCM_CLASS_MODEM, /* software modem class */ 134 SNDRV_PCM_CLASS_DIGITIZER, /* digitizer class */ 135 /* Don't forget to change the following: */ 136 SNDRV_PCM_CLASS_LAST = SNDRV_PCM_CLASS_DIGITIZER, 137 }; 138 139 enum { 140 SNDRV_PCM_SUBCLASS_GENERIC_MIX = 0, /* mono or stereo subdevices are mixed together */ 141 SNDRV_PCM_SUBCLASS_MULTI_MIX, /* multichannel subdevices are mixed together */ 142 /* Don't forget to change the following: */ 143 SNDRV_PCM_SUBCLASS_LAST = SNDRV_PCM_SUBCLASS_MULTI_MIX, 144 }; 145 146 enum { 147 SNDRV_PCM_STREAM_PLAYBACK = 0, 148 SNDRV_PCM_STREAM_CAPTURE, 149 SNDRV_PCM_STREAM_LAST = SNDRV_PCM_STREAM_CAPTURE, 150 }; 151 152 typedef int __bitwise snd_pcm_access_t; 153 #define SNDRV_PCM_ACCESS_MMAP_INTERLEAVED ((snd_pcm_access_t) 0) /* interleaved mmap */ 154 #define SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED ((snd_pcm_access_t) 1) /* noninterleaved mmap */ 155 #define SNDRV_PCM_ACCESS_MMAP_COMPLEX ((snd_pcm_access_t) 2) /* complex mmap */ 156 #define SNDRV_PCM_ACCESS_RW_INTERLEAVED ((snd_pcm_access_t) 3) /* readi/writei */ 157 #define SNDRV_PCM_ACCESS_RW_NONINTERLEAVED ((snd_pcm_access_t) 4) /* readn/writen */ 158 #define SNDRV_PCM_ACCESS_LAST SNDRV_PCM_ACCESS_RW_NONINTERLEAVED 159 160 typedef int __bitwise snd_pcm_format_t; 161 #define SNDRV_PCM_FORMAT_S8 ((snd_pcm_format_t) 0) 162 #define SNDRV_PCM_FORMAT_U8 ((snd_pcm_format_t) 1) 163 #define SNDRV_PCM_FORMAT_S16_LE ((snd_pcm_format_t) 2) 164 #define SNDRV_PCM_FORMAT_S16_BE ((snd_pcm_format_t) 3) 165 #define SNDRV_PCM_FORMAT_U16_LE ((snd_pcm_format_t) 4) 166 #define SNDRV_PCM_FORMAT_U16_BE ((snd_pcm_format_t) 5) 167 #define SNDRV_PCM_FORMAT_S24_LE ((snd_pcm_format_t) 6) /* low three bytes */ 168 #define SNDRV_PCM_FORMAT_S24_BE ((snd_pcm_format_t) 7) /* low three bytes */ 169 #define SNDRV_PCM_FORMAT_U24_LE ((snd_pcm_format_t) 8) /* low three bytes */ 170 #define SNDRV_PCM_FORMAT_U24_BE ((snd_pcm_format_t) 9) /* low three bytes */ 171 #define SNDRV_PCM_FORMAT_S32_LE ((snd_pcm_format_t) 10) 172 #define SNDRV_PCM_FORMAT_S32_BE ((snd_pcm_format_t) 11) 173 #define SNDRV_PCM_FORMAT_U32_LE ((snd_pcm_format_t) 12) 174 #define SNDRV_PCM_FORMAT_U32_BE ((snd_pcm_format_t) 13) 175 #define SNDRV_PCM_FORMAT_FLOAT_LE ((snd_pcm_format_t) 14) /* 4-byte float, IEEE-754 32-bit, range -1.0 to 1.0 */ 176 #define SNDRV_PCM_FORMAT_FLOAT_BE ((snd_pcm_format_t) 15) /* 4-byte float, IEEE-754 32-bit, range -1.0 to 1.0 */ 177 #define SNDRV_PCM_FORMAT_FLOAT64_LE ((snd_pcm_format_t) 16) /* 8-byte float, IEEE-754 64-bit, range -1.0 to 1.0 */ 178 #define SNDRV_PCM_FORMAT_FLOAT64_BE ((snd_pcm_format_t) 17) /* 8-byte float, IEEE-754 64-bit, range -1.0 to 1.0 */ 179 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE ((snd_pcm_format_t) 18) /* IEC-958 subframe, Little Endian */ 180 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE ((snd_pcm_format_t) 19) /* IEC-958 subframe, Big Endian */ 181 #define SNDRV_PCM_FORMAT_MU_LAW ((snd_pcm_format_t) 20) 182 #define SNDRV_PCM_FORMAT_A_LAW ((snd_pcm_format_t) 21) 183 #define SNDRV_PCM_FORMAT_IMA_ADPCM ((snd_pcm_format_t) 22) 184 #define SNDRV_PCM_FORMAT_MPEG ((snd_pcm_format_t) 23) 185 #define SNDRV_PCM_FORMAT_GSM ((snd_pcm_format_t) 24) 186 #define SNDRV_PCM_FORMAT_SPECIAL ((snd_pcm_format_t) 31) 187 #define SNDRV_PCM_FORMAT_S24_3LE ((snd_pcm_format_t) 32) /* in three bytes */ 188 #define SNDRV_PCM_FORMAT_S24_3BE ((snd_pcm_format_t) 33) /* in three bytes */ 189 #define SNDRV_PCM_FORMAT_U24_3LE ((snd_pcm_format_t) 34) /* in three bytes */ 190 #define SNDRV_PCM_FORMAT_U24_3BE ((snd_pcm_format_t) 35) /* in three bytes */ 191 #define SNDRV_PCM_FORMAT_S20_3LE ((snd_pcm_format_t) 36) /* in three bytes */ 192 #define SNDRV_PCM_FORMAT_S20_3BE ((snd_pcm_format_t) 37) /* in three bytes */ 193 #define SNDRV_PCM_FORMAT_U20_3LE ((snd_pcm_format_t) 38) /* in three bytes */ 194 #define SNDRV_PCM_FORMAT_U20_3BE ((snd_pcm_format_t) 39) /* in three bytes */ 195 #define SNDRV_PCM_FORMAT_S18_3LE ((snd_pcm_format_t) 40) /* in three bytes */ 196 #define SNDRV_PCM_FORMAT_S18_3BE ((snd_pcm_format_t) 41) /* in three bytes */ 197 #define SNDRV_PCM_FORMAT_U18_3LE ((snd_pcm_format_t) 42) /* in three bytes */ 198 #define SNDRV_PCM_FORMAT_U18_3BE ((snd_pcm_format_t) 43) /* in three bytes */ 199 #define SNDRV_PCM_FORMAT_LAST SNDRV_PCM_FORMAT_U18_3BE 200 201 #ifdef SNDRV_LITTLE_ENDIAN 202 #define SNDRV_PCM_FORMAT_S16 SNDRV_PCM_FORMAT_S16_LE 203 #define SNDRV_PCM_FORMAT_U16 SNDRV_PCM_FORMAT_U16_LE 204 #define SNDRV_PCM_FORMAT_S24 SNDRV_PCM_FORMAT_S24_LE 205 #define SNDRV_PCM_FORMAT_U24 SNDRV_PCM_FORMAT_U24_LE 206 #define SNDRV_PCM_FORMAT_S32 SNDRV_PCM_FORMAT_S32_LE 207 #define SNDRV_PCM_FORMAT_U32 SNDRV_PCM_FORMAT_U32_LE 208 #define SNDRV_PCM_FORMAT_FLOAT SNDRV_PCM_FORMAT_FLOAT_LE 209 #define SNDRV_PCM_FORMAT_FLOAT64 SNDRV_PCM_FORMAT_FLOAT64_LE 210 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE 211 #endif 212 #ifdef SNDRV_BIG_ENDIAN 213 #define SNDRV_PCM_FORMAT_S16 SNDRV_PCM_FORMAT_S16_BE 214 #define SNDRV_PCM_FORMAT_U16 SNDRV_PCM_FORMAT_U16_BE 215 #define SNDRV_PCM_FORMAT_S24 SNDRV_PCM_FORMAT_S24_BE 216 #define SNDRV_PCM_FORMAT_U24 SNDRV_PCM_FORMAT_U24_BE 217 #define SNDRV_PCM_FORMAT_S32 SNDRV_PCM_FORMAT_S32_BE 218 #define SNDRV_PCM_FORMAT_U32 SNDRV_PCM_FORMAT_U32_BE 219 #define SNDRV_PCM_FORMAT_FLOAT SNDRV_PCM_FORMAT_FLOAT_BE 220 #define SNDRV_PCM_FORMAT_FLOAT64 SNDRV_PCM_FORMAT_FLOAT64_BE 221 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE 222 #endif 223 224 typedef int __bitwise snd_pcm_subformat_t; 225 #define SNDRV_PCM_SUBFORMAT_STD ((snd_pcm_subformat_t) 0) 226 #define SNDRV_PCM_SUBFORMAT_LAST SNDRV_PCM_SUBFORMAT_STD 227 228 #define SNDRV_PCM_INFO_MMAP 0x00000001 /* hardware supports mmap */ 229 #define SNDRV_PCM_INFO_MMAP_VALID 0x00000002 /* period data are valid during transfer */ 230 #define SNDRV_PCM_INFO_DOUBLE 0x00000004 /* Double buffering needed for PCM start/stop */ 231 #define SNDRV_PCM_INFO_BATCH 0x00000010 /* double buffering */ 232 #define SNDRV_PCM_INFO_INTERLEAVED 0x00000100 /* channels are interleaved */ 233 #define SNDRV_PCM_INFO_NONINTERLEAVED 0x00000200 /* channels are not interleaved */ 234 #define SNDRV_PCM_INFO_COMPLEX 0x00000400 /* complex frame organization (mmap only) */ 235 #define SNDRV_PCM_INFO_BLOCK_TRANSFER 0x00010000 /* hardware transfer block of samples */ 236 #define SNDRV_PCM_INFO_OVERRANGE 0x00020000 /* hardware supports ADC (capture) overrange detection */ 237 #define SNDRV_PCM_INFO_RESUME 0x00040000 /* hardware supports stream resume after suspend */ 238 #define SNDRV_PCM_INFO_PAUSE 0x00080000 /* pause ioctl is supported */ 239 #define SNDRV_PCM_INFO_HALF_DUPLEX 0x00100000 /* only half duplex */ 240 #define SNDRV_PCM_INFO_JOINT_DUPLEX 0x00200000 /* playback and capture stream are somewhat correlated */ 241 #define SNDRV_PCM_INFO_SYNC_START 0x00400000 /* pcm support some kind of sync go */ 242 #define SNDRV_PCM_INFO_FIFO_IN_FRAMES 0x80000000 /* internal kernel flag - FIFO size is in frames */ 243 244 typedef int __bitwise snd_pcm_state_t; 245 #define SNDRV_PCM_STATE_OPEN ((snd_pcm_state_t) 0) /* stream is open */ 246 #define SNDRV_PCM_STATE_SETUP ((snd_pcm_state_t) 1) /* stream has a setup */ 247 #define SNDRV_PCM_STATE_PREPARED ((snd_pcm_state_t) 2) /* stream is ready to start */ 248 #define SNDRV_PCM_STATE_RUNNING ((snd_pcm_state_t) 3) /* stream is running */ 249 #define SNDRV_PCM_STATE_XRUN ((snd_pcm_state_t) 4) /* stream reached an xrun */ 250 #define SNDRV_PCM_STATE_DRAINING ((snd_pcm_state_t) 5) /* stream is draining */ 251 #define SNDRV_PCM_STATE_PAUSED ((snd_pcm_state_t) 6) /* stream is paused */ 252 #define SNDRV_PCM_STATE_SUSPENDED ((snd_pcm_state_t) 7) /* hardware is suspended */ 253 #define SNDRV_PCM_STATE_DISCONNECTED ((snd_pcm_state_t) 8) /* hardware is disconnected */ 254 #define SNDRV_PCM_STATE_LAST SNDRV_PCM_STATE_DISCONNECTED 255 256 enum { 257 SNDRV_PCM_MMAP_OFFSET_DATA = 0x00000000, 258 SNDRV_PCM_MMAP_OFFSET_STATUS = 0x80000000, 259 SNDRV_PCM_MMAP_OFFSET_CONTROL = 0x81000000, 260 }; 261 262 union snd_pcm_sync_id { 263 unsigned char id[16]; 264 unsigned short id16[8]; 265 unsigned int id32[4]; 266 }; 267 268 struct snd_pcm_info { 269 unsigned int device; /* RO/WR (control): device number */ 270 unsigned int subdevice; /* RO/WR (control): subdevice number */ 271 int stream; /* RO/WR (control): stream direction */ 272 int card; /* R: card number */ 273 unsigned char id[64]; /* ID (user selectable) */ 274 unsigned char name[80]; /* name of this device */ 275 unsigned char subname[32]; /* subdevice name */ 276 int dev_class; /* SNDRV_PCM_CLASS_* */ 277 int dev_subclass; /* SNDRV_PCM_SUBCLASS_* */ 278 unsigned int subdevices_count; 279 unsigned int subdevices_avail; 280 union snd_pcm_sync_id sync; /* hardware synchronization ID */ 281 unsigned char reserved[64]; /* reserved for future... */ 282 }; 283 284 typedef int snd_pcm_hw_param_t; 285 #define SNDRV_PCM_HW_PARAM_ACCESS 0 /* Access type */ 286 #define SNDRV_PCM_HW_PARAM_FORMAT 1 /* Format */ 287 #define SNDRV_PCM_HW_PARAM_SUBFORMAT 2 /* Subformat */ 288 #define SNDRV_PCM_HW_PARAM_FIRST_MASK SNDRV_PCM_HW_PARAM_ACCESS 289 #define SNDRV_PCM_HW_PARAM_LAST_MASK SNDRV_PCM_HW_PARAM_SUBFORMAT 290 291 #define SNDRV_PCM_HW_PARAM_SAMPLE_BITS 8 /* Bits per sample */ 292 #define SNDRV_PCM_HW_PARAM_FRAME_BITS 9 /* Bits per frame */ 293 #define SNDRV_PCM_HW_PARAM_CHANNELS 10 /* Channels */ 294 #define SNDRV_PCM_HW_PARAM_RATE 11 /* Approx rate */ 295 #define SNDRV_PCM_HW_PARAM_PERIOD_TIME 12 /* Approx distance between 296 * interrupts in us 297 */ 298 #define SNDRV_PCM_HW_PARAM_PERIOD_SIZE 13 /* Approx frames between 299 * interrupts 300 */ 301 #define SNDRV_PCM_HW_PARAM_PERIOD_BYTES 14 /* Approx bytes between 302 * interrupts 303 */ 304 #define SNDRV_PCM_HW_PARAM_PERIODS 15 /* Approx interrupts per 305 * buffer 306 */ 307 #define SNDRV_PCM_HW_PARAM_BUFFER_TIME 16 /* Approx duration of buffer 308 * in us 309 */ 310 #define SNDRV_PCM_HW_PARAM_BUFFER_SIZE 17 /* Size of buffer in frames */ 311 #define SNDRV_PCM_HW_PARAM_BUFFER_BYTES 18 /* Size of buffer in bytes */ 312 #define SNDRV_PCM_HW_PARAM_TICK_TIME 19 /* Approx tick duration in us */ 313 #define SNDRV_PCM_HW_PARAM_FIRST_INTERVAL SNDRV_PCM_HW_PARAM_SAMPLE_BITS 314 #define SNDRV_PCM_HW_PARAM_LAST_INTERVAL SNDRV_PCM_HW_PARAM_TICK_TIME 315 316 #define SNDRV_PCM_HW_PARAMS_NORESAMPLE (1<<0) /* avoid rate resampling */ 317 318 struct snd_interval { 319 unsigned int min, max; 320 unsigned int openmin:1, 321 openmax:1, 322 integer:1, 323 empty:1; 324 }; 325 326 #define SNDRV_MASK_MAX 256 327 328 struct snd_mask { 329 __u32 bits[(SNDRV_MASK_MAX+31)/32]; 330 }; 331 332 struct snd_pcm_hw_params { 333 unsigned int flags; 334 struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK - 335 SNDRV_PCM_HW_PARAM_FIRST_MASK + 1]; 336 struct snd_mask mres[5]; /* reserved masks */ 337 struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL - 338 SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1]; 339 struct snd_interval ires[9]; /* reserved intervals */ 340 unsigned int rmask; /* W: requested masks */ 341 unsigned int cmask; /* R: changed masks */ 342 unsigned int info; /* R: Info flags for returned setup */ 343 unsigned int msbits; /* R: used most significant bits */ 344 unsigned int rate_num; /* R: rate numerator */ 345 unsigned int rate_den; /* R: rate denominator */ 346 snd_pcm_uframes_t fifo_size; /* R: chip FIFO size in frames */ 347 unsigned char reserved[64]; /* reserved for future */ 348 }; 349 350 enum { 351 SNDRV_PCM_TSTAMP_NONE = 0, 352 SNDRV_PCM_TSTAMP_ENABLE, 353 SNDRV_PCM_TSTAMP_LAST = SNDRV_PCM_TSTAMP_ENABLE, 354 }; 355 356 struct snd_pcm_sw_params { 357 int tstamp_mode; /* timestamp mode */ 358 unsigned int period_step; 359 unsigned int sleep_min; /* min ticks to sleep */ 360 snd_pcm_uframes_t avail_min; /* min avail frames for wakeup */ 361 snd_pcm_uframes_t xfer_align; /* obsolete: xfer size need to be a multiple */ 362 snd_pcm_uframes_t start_threshold; /* min hw_avail frames for automatic start */ 363 snd_pcm_uframes_t stop_threshold; /* min avail frames for automatic stop */ 364 snd_pcm_uframes_t silence_threshold; /* min distance from noise for silence filling */ 365 snd_pcm_uframes_t silence_size; /* silence block size */ 366 snd_pcm_uframes_t boundary; /* pointers wrap point */ 367 unsigned char reserved[64]; /* reserved for future */ 368 }; 369 370 struct snd_pcm_channel_info { 371 unsigned int channel; 372 __kernel_off_t offset; /* mmap offset */ 373 unsigned int first; /* offset to first sample in bits */ 374 unsigned int step; /* samples distance in bits */ 375 }; 376 377 struct snd_pcm_status { 378 snd_pcm_state_t state; /* stream state */ 379 struct timespec trigger_tstamp; /* time when stream was started/stopped/paused */ 380 struct timespec tstamp; /* reference timestamp */ 381 snd_pcm_uframes_t appl_ptr; /* appl ptr */ 382 snd_pcm_uframes_t hw_ptr; /* hw ptr */ 383 snd_pcm_sframes_t delay; /* current delay in frames */ 384 snd_pcm_uframes_t avail; /* number of frames available */ 385 snd_pcm_uframes_t avail_max; /* max frames available on hw since last status */ 386 snd_pcm_uframes_t overrange; /* count of ADC (capture) overrange detections from last status */ 387 snd_pcm_state_t suspended_state; /* suspended stream state */ 388 unsigned char reserved[60]; /* must be filled with zero */ 389 }; 390 391 struct snd_pcm_mmap_status { 392 snd_pcm_state_t state; /* RO: state - SNDRV_PCM_STATE_XXXX */ 393 int pad1; /* Needed for 64 bit alignment */ 394 snd_pcm_uframes_t hw_ptr; /* RO: hw ptr (0...boundary-1) */ 395 struct timespec tstamp; /* Timestamp */ 396 snd_pcm_state_t suspended_state; /* RO: suspended stream state */ 397 }; 398 399 struct snd_pcm_mmap_control { 400 snd_pcm_uframes_t appl_ptr; /* RW: appl ptr (0...boundary-1) */ 401 snd_pcm_uframes_t avail_min; /* RW: min available frames for wakeup */ 402 }; 403 404 #define SNDRV_PCM_SYNC_PTR_HWSYNC (1<<0) /* execute hwsync */ 405 #define SNDRV_PCM_SYNC_PTR_APPL (1<<1) /* get appl_ptr from driver (r/w op) */ 406 #define SNDRV_PCM_SYNC_PTR_AVAIL_MIN (1<<2) /* get avail_min from driver */ 407 408 struct snd_pcm_sync_ptr { 409 unsigned int flags; 410 union { 411 struct snd_pcm_mmap_status status; 412 unsigned char reserved[64]; 413 } s; 414 union { 415 struct snd_pcm_mmap_control control; 416 unsigned char reserved[64]; 417 } c; 418 }; 419 420 struct snd_xferi { 421 snd_pcm_sframes_t result; 422 void *buf; 423 snd_pcm_uframes_t frames; 424 }; 425 426 struct snd_xfern { 427 snd_pcm_sframes_t result; 428 void * *bufs; 429 snd_pcm_uframes_t frames; 430 }; 431 432 enum { 433 SNDRV_PCM_TSTAMP_TYPE_GETTIMEOFDAY = 0, /* gettimeofday equivalent */ 434 SNDRV_PCM_TSTAMP_TYPE_MONOTONIC, /* posix_clock_monotonic equivalent */ 435 SNDRV_PCM_TSTAMP_TYPE_LAST = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC, 436 }; 437 438 #define SNDRV_PCM_IOCTL_PVERSION _IOR('A', 0x00, int) 439 #define SNDRV_PCM_IOCTL_INFO _IOR('A', 0x01, struct snd_pcm_info) 440 #define SNDRV_PCM_IOCTL_TSTAMP _IOW('A', 0x02, int) 441 #define SNDRV_PCM_IOCTL_TTSTAMP _IOW('A', 0x03, int) 442 #define SNDRV_PCM_IOCTL_HW_REFINE _IOWR('A', 0x10, struct snd_pcm_hw_params) 443 #define SNDRV_PCM_IOCTL_HW_PARAMS _IOWR('A', 0x11, struct snd_pcm_hw_params) 444 #define SNDRV_PCM_IOCTL_HW_FREE _IO('A', 0x12) 445 #define SNDRV_PCM_IOCTL_SW_PARAMS _IOWR('A', 0x13, struct snd_pcm_sw_params) 446 #define SNDRV_PCM_IOCTL_STATUS _IOR('A', 0x20, struct snd_pcm_status) 447 #define SNDRV_PCM_IOCTL_DELAY _IOR('A', 0x21, snd_pcm_sframes_t) 448 #define SNDRV_PCM_IOCTL_HWSYNC _IO('A', 0x22) 449 #define SNDRV_PCM_IOCTL_SYNC_PTR _IOWR('A', 0x23, struct snd_pcm_sync_ptr) 450 #define SNDRV_PCM_IOCTL_CHANNEL_INFO _IOR('A', 0x32, struct snd_pcm_channel_info) 451 #define SNDRV_PCM_IOCTL_PREPARE _IO('A', 0x40) 452 #define SNDRV_PCM_IOCTL_RESET _IO('A', 0x41) 453 #define SNDRV_PCM_IOCTL_START _IO('A', 0x42) 454 #define SNDRV_PCM_IOCTL_DROP _IO('A', 0x43) 455 #define SNDRV_PCM_IOCTL_DRAIN _IO('A', 0x44) 456 #define SNDRV_PCM_IOCTL_PAUSE _IOW('A', 0x45, int) 457 #define SNDRV_PCM_IOCTL_REWIND _IOW('A', 0x46, snd_pcm_uframes_t) 458 #define SNDRV_PCM_IOCTL_RESUME _IO('A', 0x47) 459 #define SNDRV_PCM_IOCTL_XRUN _IO('A', 0x48) 460 #define SNDRV_PCM_IOCTL_FORWARD _IOW('A', 0x49, snd_pcm_uframes_t) 461 #define SNDRV_PCM_IOCTL_WRITEI_FRAMES _IOW('A', 0x50, struct snd_xferi) 462 #define SNDRV_PCM_IOCTL_READI_FRAMES _IOR('A', 0x51, struct snd_xferi) 463 #define SNDRV_PCM_IOCTL_WRITEN_FRAMES _IOW('A', 0x52, struct snd_xfern) 464 #define SNDRV_PCM_IOCTL_READN_FRAMES _IOR('A', 0x53, struct snd_xfern) 465 #define SNDRV_PCM_IOCTL_LINK _IOW('A', 0x60, int) 466 #define SNDRV_PCM_IOCTL_UNLINK _IO('A', 0x61) 467 468 /***************************************************************************** 469 * * 470 * MIDI v1.0 interface * 471 * * 472 *****************************************************************************/ 473 474 /* 475 * Raw MIDI section - /dev/snd/midi?? 476 */ 477 478 #define SNDRV_RAWMIDI_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 0) 479 480 enum { 481 SNDRV_RAWMIDI_STREAM_OUTPUT = 0, 482 SNDRV_RAWMIDI_STREAM_INPUT, 483 SNDRV_RAWMIDI_STREAM_LAST = SNDRV_RAWMIDI_STREAM_INPUT, 484 }; 485 486 #define SNDRV_RAWMIDI_INFO_OUTPUT 0x00000001 487 #define SNDRV_RAWMIDI_INFO_INPUT 0x00000002 488 #define SNDRV_RAWMIDI_INFO_DUPLEX 0x00000004 489 490 struct snd_rawmidi_info { 491 unsigned int device; /* RO/WR (control): device number */ 492 unsigned int subdevice; /* RO/WR (control): subdevice number */ 493 int stream; /* WR: stream */ 494 int card; /* R: card number */ 495 unsigned int flags; /* SNDRV_RAWMIDI_INFO_XXXX */ 496 unsigned char id[64]; /* ID (user selectable) */ 497 unsigned char name[80]; /* name of device */ 498 unsigned char subname[32]; /* name of active or selected subdevice */ 499 unsigned int subdevices_count; 500 unsigned int subdevices_avail; 501 unsigned char reserved[64]; /* reserved for future use */ 502 }; 503 504 struct snd_rawmidi_params { 505 int stream; 506 size_t buffer_size; /* queue size in bytes */ 507 size_t avail_min; /* minimum avail bytes for wakeup */ 508 unsigned int no_active_sensing: 1; /* do not send active sensing byte in close() */ 509 unsigned char reserved[16]; /* reserved for future use */ 510 }; 511 512 struct snd_rawmidi_status { 513 int stream; 514 struct timespec tstamp; /* Timestamp */ 515 size_t avail; /* available bytes */ 516 size_t xruns; /* count of overruns since last status (in bytes) */ 517 unsigned char reserved[16]; /* reserved for future use */ 518 }; 519 520 #define SNDRV_RAWMIDI_IOCTL_PVERSION _IOR('W', 0x00, int) 521 #define SNDRV_RAWMIDI_IOCTL_INFO _IOR('W', 0x01, struct snd_rawmidi_info) 522 #define SNDRV_RAWMIDI_IOCTL_PARAMS _IOWR('W', 0x10, struct snd_rawmidi_params) 523 #define SNDRV_RAWMIDI_IOCTL_STATUS _IOWR('W', 0x20, struct snd_rawmidi_status) 524 #define SNDRV_RAWMIDI_IOCTL_DROP _IOW('W', 0x30, int) 525 #define SNDRV_RAWMIDI_IOCTL_DRAIN _IOW('W', 0x31, int) 526 527 /* 528 * Timer section - /dev/snd/timer 529 */ 530 531 #define SNDRV_TIMER_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 5) 532 533 enum { 534 SNDRV_TIMER_CLASS_NONE = -1, 535 SNDRV_TIMER_CLASS_SLAVE = 0, 536 SNDRV_TIMER_CLASS_GLOBAL, 537 SNDRV_TIMER_CLASS_CARD, 538 SNDRV_TIMER_CLASS_PCM, 539 SNDRV_TIMER_CLASS_LAST = SNDRV_TIMER_CLASS_PCM, 540 }; 541 542 /* slave timer classes */ 543 enum { 544 SNDRV_TIMER_SCLASS_NONE = 0, 545 SNDRV_TIMER_SCLASS_APPLICATION, 546 SNDRV_TIMER_SCLASS_SEQUENCER, /* alias */ 547 SNDRV_TIMER_SCLASS_OSS_SEQUENCER, /* alias */ 548 SNDRV_TIMER_SCLASS_LAST = SNDRV_TIMER_SCLASS_OSS_SEQUENCER, 549 }; 550 551 /* global timers (device member) */ 552 #define SNDRV_TIMER_GLOBAL_SYSTEM 0 553 #define SNDRV_TIMER_GLOBAL_RTC 1 554 #define SNDRV_TIMER_GLOBAL_HPET 2 555 #define SNDRV_TIMER_GLOBAL_HRTIMER 3 556 557 /* info flags */ 558 #define SNDRV_TIMER_FLG_SLAVE (1<<0) /* cannot be controlled */ 559 560 struct snd_timer_id { 561 int dev_class; 562 int dev_sclass; 563 int card; 564 int device; 565 int subdevice; 566 }; 567 568 struct snd_timer_ginfo { 569 struct snd_timer_id tid; /* requested timer ID */ 570 unsigned int flags; /* timer flags - SNDRV_TIMER_FLG_* */ 571 int card; /* card number */ 572 unsigned char id[64]; /* timer identification */ 573 unsigned char name[80]; /* timer name */ 574 unsigned long reserved0; /* reserved for future use */ 575 unsigned long resolution; /* average period resolution in ns */ 576 unsigned long resolution_min; /* minimal period resolution in ns */ 577 unsigned long resolution_max; /* maximal period resolution in ns */ 578 unsigned int clients; /* active timer clients */ 579 unsigned char reserved[32]; 580 }; 581 582 struct snd_timer_gparams { 583 struct snd_timer_id tid; /* requested timer ID */ 584 unsigned long period_num; /* requested precise period duration (in seconds) - numerator */ 585 unsigned long period_den; /* requested precise period duration (in seconds) - denominator */ 586 unsigned char reserved[32]; 587 }; 588 589 struct snd_timer_gstatus { 590 struct snd_timer_id tid; /* requested timer ID */ 591 unsigned long resolution; /* current period resolution in ns */ 592 unsigned long resolution_num; /* precise current period resolution (in seconds) - numerator */ 593 unsigned long resolution_den; /* precise current period resolution (in seconds) - denominator */ 594 unsigned char reserved[32]; 595 }; 596 597 struct snd_timer_select { 598 struct snd_timer_id id; /* bind to timer ID */ 599 unsigned char reserved[32]; /* reserved */ 600 }; 601 602 struct snd_timer_info { 603 unsigned int flags; /* timer flags - SNDRV_TIMER_FLG_* */ 604 int card; /* card number */ 605 unsigned char id[64]; /* timer identificator */ 606 unsigned char name[80]; /* timer name */ 607 unsigned long reserved0; /* reserved for future use */ 608 unsigned long resolution; /* average period resolution in ns */ 609 unsigned char reserved[64]; /* reserved */ 610 }; 611 612 #define SNDRV_TIMER_PSFLG_AUTO (1<<0) /* auto start, otherwise one-shot */ 613 #define SNDRV_TIMER_PSFLG_EXCLUSIVE (1<<1) /* exclusive use, precise start/stop/pause/continue */ 614 #define SNDRV_TIMER_PSFLG_EARLY_EVENT (1<<2) /* write early event to the poll queue */ 615 616 struct snd_timer_params { 617 unsigned int flags; /* flags - SNDRV_MIXER_PSFLG_* */ 618 unsigned int ticks; /* requested resolution in ticks */ 619 unsigned int queue_size; /* total size of queue (32-1024) */ 620 unsigned int reserved0; /* reserved, was: failure locations */ 621 unsigned int filter; /* event filter (bitmask of SNDRV_TIMER_EVENT_*) */ 622 unsigned char reserved[60]; /* reserved */ 623 }; 624 625 struct snd_timer_status { 626 struct timespec tstamp; /* Timestamp - last update */ 627 unsigned int resolution; /* current period resolution in ns */ 628 unsigned int lost; /* counter of master tick lost */ 629 unsigned int overrun; /* count of read queue overruns */ 630 unsigned int queue; /* used queue size */ 631 unsigned char reserved[64]; /* reserved */ 632 }; 633 634 #define SNDRV_TIMER_IOCTL_PVERSION _IOR('T', 0x00, int) 635 #define SNDRV_TIMER_IOCTL_NEXT_DEVICE _IOWR('T', 0x01, struct snd_timer_id) 636 #define SNDRV_TIMER_IOCTL_TREAD _IOW('T', 0x02, int) 637 #define SNDRV_TIMER_IOCTL_GINFO _IOWR('T', 0x03, struct snd_timer_ginfo) 638 #define SNDRV_TIMER_IOCTL_GPARAMS _IOW('T', 0x04, struct snd_timer_gparams) 639 #define SNDRV_TIMER_IOCTL_GSTATUS _IOWR('T', 0x05, struct snd_timer_gstatus) 640 #define SNDRV_TIMER_IOCTL_SELECT _IOW('T', 0x10, struct snd_timer_select) 641 #define SNDRV_TIMER_IOCTL_INFO _IOR('T', 0x11, struct snd_timer_info) 642 #define SNDRV_TIMER_IOCTL_PARAMS _IOW('T', 0x12, struct snd_timer_params) 643 #define SNDRV_TIMER_IOCTL_STATUS _IOR('T', 0x14, struct snd_timer_status) 644 /* The following four ioctls are changed since 1.0.9 due to confliction */ 645 #define SNDRV_TIMER_IOCTL_START _IO('T', 0xa0) 646 #define SNDRV_TIMER_IOCTL_STOP _IO('T', 0xa1) 647 #define SNDRV_TIMER_IOCTL_CONTINUE _IO('T', 0xa2) 648 #define SNDRV_TIMER_IOCTL_PAUSE _IO('T', 0xa3) 649 650 struct snd_timer_read { 651 unsigned int resolution; 652 unsigned int ticks; 653 }; 654 655 enum { 656 SNDRV_TIMER_EVENT_RESOLUTION = 0, /* val = resolution in ns */ 657 SNDRV_TIMER_EVENT_TICK, /* val = ticks */ 658 SNDRV_TIMER_EVENT_START, /* val = resolution in ns */ 659 SNDRV_TIMER_EVENT_STOP, /* val = 0 */ 660 SNDRV_TIMER_EVENT_CONTINUE, /* val = resolution in ns */ 661 SNDRV_TIMER_EVENT_PAUSE, /* val = 0 */ 662 SNDRV_TIMER_EVENT_EARLY, /* val = 0, early event */ 663 SNDRV_TIMER_EVENT_SUSPEND, /* val = 0 */ 664 SNDRV_TIMER_EVENT_RESUME, /* val = resolution in ns */ 665 /* master timer events for slave timer instances */ 666 SNDRV_TIMER_EVENT_MSTART = SNDRV_TIMER_EVENT_START + 10, 667 SNDRV_TIMER_EVENT_MSTOP = SNDRV_TIMER_EVENT_STOP + 10, 668 SNDRV_TIMER_EVENT_MCONTINUE = SNDRV_TIMER_EVENT_CONTINUE + 10, 669 SNDRV_TIMER_EVENT_MPAUSE = SNDRV_TIMER_EVENT_PAUSE + 10, 670 SNDRV_TIMER_EVENT_MSUSPEND = SNDRV_TIMER_EVENT_SUSPEND + 10, 671 SNDRV_TIMER_EVENT_MRESUME = SNDRV_TIMER_EVENT_RESUME + 10, 672 }; 673 674 struct snd_timer_tread { 675 int event; 676 struct timespec tstamp; 677 unsigned int val; 678 }; 679 680 /**************************************************************************** 681 * * 682 * Section for driver control interface - /dev/snd/control? * 683 * * 684 ****************************************************************************/ 685 686 #define SNDRV_CTL_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 6) 687 688 struct snd_ctl_card_info { 689 int card; /* card number */ 690 int pad; /* reserved for future (was type) */ 691 unsigned char id[16]; /* ID of card (user selectable) */ 692 unsigned char driver[16]; /* Driver name */ 693 unsigned char name[32]; /* Short name of soundcard */ 694 unsigned char longname[80]; /* name + info text about soundcard */ 695 unsigned char reserved_[16]; /* reserved for future (was ID of mixer) */ 696 unsigned char mixername[80]; /* visual mixer identification */ 697 unsigned char components[128]; /* card components / fine identification, delimited with one space (AC97 etc..) */ 698 }; 699 700 typedef int __bitwise snd_ctl_elem_type_t; 701 #define SNDRV_CTL_ELEM_TYPE_NONE ((snd_ctl_elem_type_t) 0) /* invalid */ 702 #define SNDRV_CTL_ELEM_TYPE_BOOLEAN ((snd_ctl_elem_type_t) 1) /* boolean type */ 703 #define SNDRV_CTL_ELEM_TYPE_INTEGER ((snd_ctl_elem_type_t) 2) /* integer type */ 704 #define SNDRV_CTL_ELEM_TYPE_ENUMERATED ((snd_ctl_elem_type_t) 3) /* enumerated type */ 705 #define SNDRV_CTL_ELEM_TYPE_BYTES ((snd_ctl_elem_type_t) 4) /* byte array */ 706 #define SNDRV_CTL_ELEM_TYPE_IEC958 ((snd_ctl_elem_type_t) 5) /* IEC958 (S/PDIF) setup */ 707 #define SNDRV_CTL_ELEM_TYPE_INTEGER64 ((snd_ctl_elem_type_t) 6) /* 64-bit integer type */ 708 #define SNDRV_CTL_ELEM_TYPE_LAST SNDRV_CTL_ELEM_TYPE_INTEGER64 709 710 typedef int __bitwise snd_ctl_elem_iface_t; 711 #define SNDRV_CTL_ELEM_IFACE_CARD ((snd_ctl_elem_iface_t) 0) /* global control */ 712 #define SNDRV_CTL_ELEM_IFACE_HWDEP ((snd_ctl_elem_iface_t) 1) /* hardware dependent device */ 713 #define SNDRV_CTL_ELEM_IFACE_MIXER ((snd_ctl_elem_iface_t) 2) /* virtual mixer device */ 714 #define SNDRV_CTL_ELEM_IFACE_PCM ((snd_ctl_elem_iface_t) 3) /* PCM device */ 715 #define SNDRV_CTL_ELEM_IFACE_RAWMIDI ((snd_ctl_elem_iface_t) 4) /* RawMidi device */ 716 #define SNDRV_CTL_ELEM_IFACE_TIMER ((snd_ctl_elem_iface_t) 5) /* timer device */ 717 #define SNDRV_CTL_ELEM_IFACE_SEQUENCER ((snd_ctl_elem_iface_t) 6) /* sequencer client */ 718 #define SNDRV_CTL_ELEM_IFACE_LAST SNDRV_CTL_ELEM_IFACE_SEQUENCER 719 720 #define SNDRV_CTL_ELEM_ACCESS_READ (1<<0) 721 #define SNDRV_CTL_ELEM_ACCESS_WRITE (1<<1) 722 #define SNDRV_CTL_ELEM_ACCESS_READWRITE (SNDRV_CTL_ELEM_ACCESS_READ|SNDRV_CTL_ELEM_ACCESS_WRITE) 723 #define SNDRV_CTL_ELEM_ACCESS_VOLATILE (1<<2) /* control value may be changed without a notification */ 724 #define SNDRV_CTL_ELEM_ACCESS_TIMESTAMP (1<<3) /* when was control changed */ 725 #define SNDRV_CTL_ELEM_ACCESS_TLV_READ (1<<4) /* TLV read is possible */ 726 #define SNDRV_CTL_ELEM_ACCESS_TLV_WRITE (1<<5) /* TLV write is possible */ 727 #define SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE (SNDRV_CTL_ELEM_ACCESS_TLV_READ|SNDRV_CTL_ELEM_ACCESS_TLV_WRITE) 728 #define SNDRV_CTL_ELEM_ACCESS_TLV_COMMAND (1<<6) /* TLV command is possible */ 729 #define SNDRV_CTL_ELEM_ACCESS_INACTIVE (1<<8) /* control does actually nothing, but may be updated */ 730 #define SNDRV_CTL_ELEM_ACCESS_LOCK (1<<9) /* write lock */ 731 #define SNDRV_CTL_ELEM_ACCESS_OWNER (1<<10) /* write lock owner */ 732 #define SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK (1<<28) /* kernel use a TLV callback */ 733 #define SNDRV_CTL_ELEM_ACCESS_USER (1<<29) /* user space element */ 734 /* bits 30 and 31 are obsoleted (for indirect access) */ 735 736 /* for further details see the ACPI and PCI power management specification */ 737 #define SNDRV_CTL_POWER_D0 0x0000 /* full On */ 738 #define SNDRV_CTL_POWER_D1 0x0100 /* partial On */ 739 #define SNDRV_CTL_POWER_D2 0x0200 /* partial On */ 740 #define SNDRV_CTL_POWER_D3 0x0300 /* Off */ 741 #define SNDRV_CTL_POWER_D3hot (SNDRV_CTL_POWER_D3|0x0000) /* Off, with power */ 742 #define SNDRV_CTL_POWER_D3cold (SNDRV_CTL_POWER_D3|0x0001) /* Off, without power */ 743 744 struct snd_ctl_elem_id { 745 unsigned int numid; /* numeric identifier, zero = invalid */ 746 snd_ctl_elem_iface_t iface; /* interface identifier */ 747 unsigned int device; /* device/client number */ 748 unsigned int subdevice; /* subdevice (substream) number */ 749 unsigned char name[44]; /* ASCII name of item */ 750 unsigned int index; /* index of item */ 751 }; 752 753 struct snd_ctl_elem_list { 754 unsigned int offset; /* W: first element ID to get */ 755 unsigned int space; /* W: count of element IDs to get */ 756 unsigned int used; /* R: count of element IDs set */ 757 unsigned int count; /* R: count of all elements */ 758 struct snd_ctl_elem_id *pids; /* R: IDs */ 759 unsigned char reserved[50]; 760 }; 761 762 struct snd_ctl_elem_info { 763 struct snd_ctl_elem_id id; /* W: element ID */ 764 snd_ctl_elem_type_t type; /* R: value type - SNDRV_CTL_ELEM_TYPE_* */ 765 unsigned int access; /* R: value access (bitmask) - SNDRV_CTL_ELEM_ACCESS_* */ 766 unsigned int count; /* count of values */ 767 __kernel_pid_t owner; /* owner's PID of this control */ 768 union { 769 struct { 770 long min; /* R: minimum value */ 771 long max; /* R: maximum value */ 772 long step; /* R: step (0 variable) */ 773 } integer; 774 struct { 775 long long min; /* R: minimum value */ 776 long long max; /* R: maximum value */ 777 long long step; /* R: step (0 variable) */ 778 } integer64; 779 struct { 780 unsigned int items; /* R: number of items */ 781 unsigned int item; /* W: item number */ 782 char name[64]; /* R: value name */ 783 } enumerated; 784 unsigned char reserved[128]; 785 } value; 786 union { 787 unsigned short d[4]; /* dimensions */ 788 unsigned short *d_ptr; /* indirect - obsoleted */ 789 } dimen; 790 unsigned char reserved[64-4*sizeof(unsigned short)]; 791 }; 792 793 struct snd_ctl_elem_value { 794 struct snd_ctl_elem_id id; /* W: element ID */ 795 unsigned int indirect: 1; /* W: indirect access - obsoleted */ 796 union { 797 union { 798 long value[128]; 799 long *value_ptr; /* obsoleted */ 800 } integer; 801 union { 802 long long value[64]; 803 long long *value_ptr; /* obsoleted */ 804 } integer64; 805 union { 806 unsigned int item[128]; 807 unsigned int *item_ptr; /* obsoleted */ 808 } enumerated; 809 union { 810 unsigned char data[512]; 811 unsigned char *data_ptr; /* obsoleted */ 812 } bytes; 813 struct snd_aes_iec958 iec958; 814 } value; /* RO */ 815 struct timespec tstamp; 816 unsigned char reserved[128-sizeof(struct timespec)]; 817 }; 818 819 struct snd_ctl_tlv { 820 unsigned int numid; /* control element numeric identification */ 821 unsigned int length; /* in bytes aligned to 4 */ 822 unsigned int tlv[0]; /* first TLV */ 823 }; 824 825 #define SNDRV_CTL_IOCTL_PVERSION _IOR('U', 0x00, int) 826 #define SNDRV_CTL_IOCTL_CARD_INFO _IOR('U', 0x01, struct snd_ctl_card_info) 827 #define SNDRV_CTL_IOCTL_ELEM_LIST _IOWR('U', 0x10, struct snd_ctl_elem_list) 828 #define SNDRV_CTL_IOCTL_ELEM_INFO _IOWR('U', 0x11, struct snd_ctl_elem_info) 829 #define SNDRV_CTL_IOCTL_ELEM_READ _IOWR('U', 0x12, struct snd_ctl_elem_value) 830 #define SNDRV_CTL_IOCTL_ELEM_WRITE _IOWR('U', 0x13, struct snd_ctl_elem_value) 831 #define SNDRV_CTL_IOCTL_ELEM_LOCK _IOW('U', 0x14, struct snd_ctl_elem_id) 832 #define SNDRV_CTL_IOCTL_ELEM_UNLOCK _IOW('U', 0x15, struct snd_ctl_elem_id) 833 #define SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS _IOWR('U', 0x16, int) 834 #define SNDRV_CTL_IOCTL_ELEM_ADD _IOWR('U', 0x17, struct snd_ctl_elem_info) 835 #define SNDRV_CTL_IOCTL_ELEM_REPLACE _IOWR('U', 0x18, struct snd_ctl_elem_info) 836 #define SNDRV_CTL_IOCTL_ELEM_REMOVE _IOWR('U', 0x19, struct snd_ctl_elem_id) 837 #define SNDRV_CTL_IOCTL_TLV_READ _IOWR('U', 0x1a, struct snd_ctl_tlv) 838 #define SNDRV_CTL_IOCTL_TLV_WRITE _IOWR('U', 0x1b, struct snd_ctl_tlv) 839 #define SNDRV_CTL_IOCTL_TLV_COMMAND _IOWR('U', 0x1c, struct snd_ctl_tlv) 840 #define SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE _IOWR('U', 0x20, int) 841 #define SNDRV_CTL_IOCTL_HWDEP_INFO _IOR('U', 0x21, struct snd_hwdep_info) 842 #define SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE _IOR('U', 0x30, int) 843 #define SNDRV_CTL_IOCTL_PCM_INFO _IOWR('U', 0x31, struct snd_pcm_info) 844 #define SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE _IOW('U', 0x32, int) 845 #define SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE _IOWR('U', 0x40, int) 846 #define SNDRV_CTL_IOCTL_RAWMIDI_INFO _IOWR('U', 0x41, struct snd_rawmidi_info) 847 #define SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE _IOW('U', 0x42, int) 848 #define SNDRV_CTL_IOCTL_POWER _IOWR('U', 0xd0, int) 849 #define SNDRV_CTL_IOCTL_POWER_STATE _IOR('U', 0xd1, int) 850 851 /* 852 * Read interface. 853 */ 854 855 enum sndrv_ctl_event_type { 856 SNDRV_CTL_EVENT_ELEM = 0, 857 SNDRV_CTL_EVENT_LAST = SNDRV_CTL_EVENT_ELEM, 858 }; 859 860 #define SNDRV_CTL_EVENT_MASK_VALUE (1<<0) /* element value was changed */ 861 #define SNDRV_CTL_EVENT_MASK_INFO (1<<1) /* element info was changed */ 862 #define SNDRV_CTL_EVENT_MASK_ADD (1<<2) /* element was added */ 863 #define SNDRV_CTL_EVENT_MASK_TLV (1<<3) /* element TLV tree was changed */ 864 #define SNDRV_CTL_EVENT_MASK_REMOVE (~0U) /* element was removed */ 865 866 struct snd_ctl_event { 867 int type; /* event type - SNDRV_CTL_EVENT_* */ 868 union { 869 struct { 870 unsigned int mask; 871 struct snd_ctl_elem_id id; 872 } elem; 873 unsigned char data8[60]; 874 } data; 875 }; 876 877 /* 878 * Control names 879 */ 880 881 #define SNDRV_CTL_NAME_NONE "" 882 #define SNDRV_CTL_NAME_PLAYBACK "Playback " 883 #define SNDRV_CTL_NAME_CAPTURE "Capture " 884 885 #define SNDRV_CTL_NAME_IEC958_NONE "" 886 #define SNDRV_CTL_NAME_IEC958_SWITCH "Switch" 887 #define SNDRV_CTL_NAME_IEC958_VOLUME "Volume" 888 #define SNDRV_CTL_NAME_IEC958_DEFAULT "Default" 889 #define SNDRV_CTL_NAME_IEC958_MASK "Mask" 890 #define SNDRV_CTL_NAME_IEC958_CON_MASK "Con Mask" 891 #define SNDRV_CTL_NAME_IEC958_PRO_MASK "Pro Mask" 892 #define SNDRV_CTL_NAME_IEC958_PCM_STREAM "PCM Stream" 893 #define SNDRV_CTL_NAME_IEC958(expl,direction,what) "IEC958 " expl SNDRV_CTL_NAME_##direction SNDRV_CTL_NAME_IEC958_##what 894 895 #endif /* __SOUND_ASOUND_H */ 896
