1 /* 2 * Advanced Linux Sound Architecture - ALSA - Driver 3 * Copyright (c) 1994-2003 by Jaroslav Kysela <perex@perex.cz>, 4 * Abramo Bagnara <abramo@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 #ifdef __KERNEL__ 29 #include <linux/ioctl.h> 30 #include <linux/time.h> 31 #include <asm/byteorder.h> 32 33 #ifdef __LITTLE_ENDIAN 34 #define SNDRV_LITTLE_ENDIAN 35 #else 36 #ifdef __BIG_ENDIAN 37 #define SNDRV_BIG_ENDIAN 38 #else 39 #error "Unsupported endian..." 40 #endif 41 #endif 42 43 #endif /* __KERNEL__ **/ 44 45 /* 46 * protocol version 47 */ 48 49 #define SNDRV_PROTOCOL_VERSION(major, minor, subminor) (((major)<<16)|((minor)<<8)|(subminor)) 50 #define SNDRV_PROTOCOL_MAJOR(version) (((version)>>16)&0xffff) 51 #define SNDRV_PROTOCOL_MINOR(version) (((version)>>8)&0xff) 52 #define SNDRV_PROTOCOL_MICRO(version) ((version)&0xff) 53 #define SNDRV_PROTOCOL_INCOMPATIBLE(kversion, uversion) \ 54 (SNDRV_PROTOCOL_MAJOR(kversion) != SNDRV_PROTOCOL_MAJOR(uversion) || \ 55 (SNDRV_PROTOCOL_MAJOR(kversion) == SNDRV_PROTOCOL_MAJOR(uversion) && \ 56 SNDRV_PROTOCOL_MINOR(kversion) != SNDRV_PROTOCOL_MINOR(uversion))) 57 58 /**************************************************************************** 59 * * 60 * Digital audio interface * 61 * * 62 ****************************************************************************/ 63 64 struct snd_aes_iec958 { 65 unsigned char status[24]; /* AES/IEC958 channel status bits */ 66 unsigned char subcode[147]; /* AES/IEC958 subcode bits */ 67 unsigned char pad; /* nothing */ 68 unsigned char dig_subframe[4]; /* AES/IEC958 subframe bits */ 69 }; 70 71 /**************************************************************************** 72 * * 73 * CEA-861 Audio InfoFrame. Used in HDMI and DisplayPort * 74 * * 75 ****************************************************************************/ 76 77 struct snd_cea_861_aud_if { 78 unsigned char db1_ct_cc; /* coding type and channel count */ 79 unsigned char db2_sf_ss; /* sample frequency and size */ 80 unsigned char db3; /* not used, all zeros */ 81 unsigned char db4_ca; /* channel allocation code */ 82 unsigned char db5_dminh_lsv; /* downmix inhibit & level-shit values */ 83 }; 84 85 /**************************************************************************** 86 * * 87 * Section for driver hardware dependent interface - /dev/snd/hw? * 88 * * 89 ****************************************************************************/ 90 91 #define SNDRV_HWDEP_VERSION SNDRV_PROTOCOL_VERSION(1, 0, 1) 92 93 enum { 94 SNDRV_HWDEP_IFACE_OPL2 = 0, 95 SNDRV_HWDEP_IFACE_OPL3, 96 SNDRV_HWDEP_IFACE_OPL4, 97 SNDRV_HWDEP_IFACE_SB16CSP, /* Creative Signal Processor */ 98 SNDRV_HWDEP_IFACE_EMU10K1, /* FX8010 processor in EMU10K1 chip */ 99 SNDRV_HWDEP_IFACE_YSS225, /* Yamaha FX processor */ 100 SNDRV_HWDEP_IFACE_ICS2115, /* Wavetable synth */ 101 SNDRV_HWDEP_IFACE_SSCAPE, /* Ensoniq SoundScape ISA card (MC68EC000) */ 102 SNDRV_HWDEP_IFACE_VX, /* Digigram VX cards */ 103 SNDRV_HWDEP_IFACE_MIXART, /* Digigram miXart cards */ 104 SNDRV_HWDEP_IFACE_USX2Y, /* Tascam US122, US224 & US428 usb */ 105 SNDRV_HWDEP_IFACE_EMUX_WAVETABLE, /* EmuX wavetable */ 106 SNDRV_HWDEP_IFACE_BLUETOOTH, /* Bluetooth audio */ 107 SNDRV_HWDEP_IFACE_USX2Y_PCM, /* Tascam US122, US224 & US428 rawusb pcm */ 108 SNDRV_HWDEP_IFACE_PCXHR, /* Digigram PCXHR */ 109 SNDRV_HWDEP_IFACE_SB_RC, /* SB Extigy/Audigy2NX remote control */ 110 SNDRV_HWDEP_IFACE_HDA, /* HD-audio */ 111 SNDRV_HWDEP_IFACE_USB_STREAM, /* direct access to usb stream */ 112 113 /* Don't forget to change the following: */ 114 SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_USB_STREAM 115 }; 116 117 struct snd_hwdep_info { 118 unsigned int device; /* WR: device number */ 119 int card; /* R: card number */ 120 unsigned char id[64]; /* ID (user selectable) */ 121 unsigned char name[80]; /* hwdep name */ 122 int iface; /* hwdep interface */ 123 unsigned char reserved[64]; /* reserved for future */ 124 }; 125 126 /* generic DSP loader */ 127 struct snd_hwdep_dsp_status { 128 unsigned int version; /* R: driver-specific version */ 129 unsigned char id[32]; /* R: driver-specific ID string */ 130 unsigned int num_dsps; /* R: number of DSP images to transfer */ 131 unsigned int dsp_loaded; /* R: bit flags indicating the loaded DSPs */ 132 unsigned int chip_ready; /* R: 1 = initialization finished */ 133 unsigned char reserved[16]; /* reserved for future use */ 134 }; 135 136 struct snd_hwdep_dsp_image { 137 unsigned int index; /* W: DSP index */ 138 unsigned char name[64]; /* W: ID (e.g. file name) */ 139 unsigned char __user *image; /* W: binary image */ 140 size_t length; /* W: size of image in bytes */ 141 unsigned long driver_data; /* W: driver-specific data */ 142 }; 143 144 #define SNDRV_HWDEP_IOCTL_PVERSION _IOR ('H', 0x00, int) 145 #define SNDRV_HWDEP_IOCTL_INFO _IOR ('H', 0x01, struct snd_hwdep_info) 146 #define SNDRV_HWDEP_IOCTL_DSP_STATUS _IOR('H', 0x02, struct snd_hwdep_dsp_status) 147 #define SNDRV_HWDEP_IOCTL_DSP_LOAD _IOW('H', 0x03, struct snd_hwdep_dsp_image) 148 149 /***************************************************************************** 150 * * 151 * Digital Audio (PCM) interface - /dev/snd/pcm?? * 152 * * 153 *****************************************************************************/ 154 155 #define SNDRV_PCM_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 10) 156 157 typedef unsigned long snd_pcm_uframes_t; 158 typedef signed long snd_pcm_sframes_t; 159 160 enum { 161 SNDRV_PCM_CLASS_GENERIC = 0, /* standard mono or stereo device */ 162 SNDRV_PCM_CLASS_MULTI, /* multichannel device */ 163 SNDRV_PCM_CLASS_MODEM, /* software modem class */ 164 SNDRV_PCM_CLASS_DIGITIZER, /* digitizer class */ 165 /* Don't forget to change the following: */ 166 SNDRV_PCM_CLASS_LAST = SNDRV_PCM_CLASS_DIGITIZER, 167 }; 168 169 enum { 170 SNDRV_PCM_SUBCLASS_GENERIC_MIX = 0, /* mono or stereo subdevices are mixed together */ 171 SNDRV_PCM_SUBCLASS_MULTI_MIX, /* multichannel subdevices are mixed together */ 172 /* Don't forget to change the following: */ 173 SNDRV_PCM_SUBCLASS_LAST = SNDRV_PCM_SUBCLASS_MULTI_MIX, 174 }; 175 176 enum { 177 SNDRV_PCM_STREAM_PLAYBACK = 0, 178 SNDRV_PCM_STREAM_CAPTURE, 179 SNDRV_PCM_STREAM_LAST = SNDRV_PCM_STREAM_CAPTURE, 180 }; 181 182 typedef int __bitwise snd_pcm_access_t; 183 #define SNDRV_PCM_ACCESS_MMAP_INTERLEAVED ((__force snd_pcm_access_t) 0) /* interleaved mmap */ 184 #define SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED ((__force snd_pcm_access_t) 1) /* noninterleaved mmap */ 185 #define SNDRV_PCM_ACCESS_MMAP_COMPLEX ((__force snd_pcm_access_t) 2) /* complex mmap */ 186 #define SNDRV_PCM_ACCESS_RW_INTERLEAVED ((__force snd_pcm_access_t) 3) /* readi/writei */ 187 #define SNDRV_PCM_ACCESS_RW_NONINTERLEAVED ((__force snd_pcm_access_t) 4) /* readn/writen */ 188 #define SNDRV_PCM_ACCESS_LAST SNDRV_PCM_ACCESS_RW_NONINTERLEAVED 189 190 typedef int __bitwise snd_pcm_format_t; 191 #define SNDRV_PCM_FORMAT_S8 ((__force snd_pcm_format_t) 0) 192 #define SNDRV_PCM_FORMAT_U8 ((__force snd_pcm_format_t) 1) 193 #define SNDRV_PCM_FORMAT_S16_LE ((__force snd_pcm_format_t) 2) 194 #define SNDRV_PCM_FORMAT_S16_BE ((__force snd_pcm_format_t) 3) 195 #define SNDRV_PCM_FORMAT_U16_LE ((__force snd_pcm_format_t) 4) 196 #define SNDRV_PCM_FORMAT_U16_BE ((__force snd_pcm_format_t) 5) 197 #define SNDRV_PCM_FORMAT_S24_LE ((__force snd_pcm_format_t) 6) /* low three bytes */ 198 #define SNDRV_PCM_FORMAT_S24_BE ((__force snd_pcm_format_t) 7) /* low three bytes */ 199 #define SNDRV_PCM_FORMAT_U24_LE ((__force snd_pcm_format_t) 8) /* low three bytes */ 200 #define SNDRV_PCM_FORMAT_U24_BE ((__force snd_pcm_format_t) 9) /* low three bytes */ 201 #define SNDRV_PCM_FORMAT_S32_LE ((__force snd_pcm_format_t) 10) 202 #define SNDRV_PCM_FORMAT_S32_BE ((__force snd_pcm_format_t) 11) 203 #define SNDRV_PCM_FORMAT_U32_LE ((__force snd_pcm_format_t) 12) 204 #define SNDRV_PCM_FORMAT_U32_BE ((__force snd_pcm_format_t) 13) 205 #define SNDRV_PCM_FORMAT_FLOAT_LE ((__force snd_pcm_format_t) 14) /* 4-byte float, IEEE-754 32-bit, range -1.0 to 1.0 */ 206 #define SNDRV_PCM_FORMAT_FLOAT_BE ((__force snd_pcm_format_t) 15) /* 4-byte float, IEEE-754 32-bit, range -1.0 to 1.0 */ 207 #define SNDRV_PCM_FORMAT_FLOAT64_LE ((__force snd_pcm_format_t) 16) /* 8-byte float, IEEE-754 64-bit, range -1.0 to 1.0 */ 208 #define SNDRV_PCM_FORMAT_FLOAT64_BE ((__force snd_pcm_format_t) 17) /* 8-byte float, IEEE-754 64-bit, range -1.0 to 1.0 */ 209 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE ((__force snd_pcm_format_t) 18) /* IEC-958 subframe, Little Endian */ 210 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE ((__force snd_pcm_format_t) 19) /* IEC-958 subframe, Big Endian */ 211 #define SNDRV_PCM_FORMAT_MU_LAW ((__force snd_pcm_format_t) 20) 212 #define SNDRV_PCM_FORMAT_A_LAW ((__force snd_pcm_format_t) 21) 213 #define SNDRV_PCM_FORMAT_IMA_ADPCM ((__force snd_pcm_format_t) 22) 214 #define SNDRV_PCM_FORMAT_MPEG ((__force snd_pcm_format_t) 23) 215 #define SNDRV_PCM_FORMAT_GSM ((__force snd_pcm_format_t) 24) 216 #define SNDRV_PCM_FORMAT_SPECIAL ((__force snd_pcm_format_t) 31) 217 #define SNDRV_PCM_FORMAT_S24_3LE ((__force snd_pcm_format_t) 32) /* in three bytes */ 218 #define SNDRV_PCM_FORMAT_S24_3BE ((__force snd_pcm_format_t) 33) /* in three bytes */ 219 #define SNDRV_PCM_FORMAT_U24_3LE ((__force snd_pcm_format_t) 34) /* in three bytes */ 220 #define SNDRV_PCM_FORMAT_U24_3BE ((__force snd_pcm_format_t) 35) /* in three bytes */ 221 #define SNDRV_PCM_FORMAT_S20_3LE ((__force snd_pcm_format_t) 36) /* in three bytes */ 222 #define SNDRV_PCM_FORMAT_S20_3BE ((__force snd_pcm_format_t) 37) /* in three bytes */ 223 #define SNDRV_PCM_FORMAT_U20_3LE ((__force snd_pcm_format_t) 38) /* in three bytes */ 224 #define SNDRV_PCM_FORMAT_U20_3BE ((__force snd_pcm_format_t) 39) /* in three bytes */ 225 #define SNDRV_PCM_FORMAT_S18_3LE ((__force snd_pcm_format_t) 40) /* in three bytes */ 226 #define SNDRV_PCM_FORMAT_S18_3BE ((__force snd_pcm_format_t) 41) /* in three bytes */ 227 #define SNDRV_PCM_FORMAT_U18_3LE ((__force snd_pcm_format_t) 42) /* in three bytes */ 228 #define SNDRV_PCM_FORMAT_U18_3BE ((__force snd_pcm_format_t) 43) /* in three bytes */ 229 #define SNDRV_PCM_FORMAT_G723_24 ((__force snd_pcm_format_t) 44) /* 8 samples in 3 bytes */ 230 #define SNDRV_PCM_FORMAT_G723_24_1B ((__force snd_pcm_format_t) 45) /* 1 sample in 1 byte */ 231 #define SNDRV_PCM_FORMAT_G723_40 ((__force snd_pcm_format_t) 46) /* 8 Samples in 5 bytes */ 232 #define SNDRV_PCM_FORMAT_G723_40_1B ((__force snd_pcm_format_t) 47) /* 1 sample in 1 byte */ 233 #define SNDRV_PCM_FORMAT_LAST SNDRV_PCM_FORMAT_G723_40_1B 234 235 #ifdef SNDRV_LITTLE_ENDIAN 236 #define SNDRV_PCM_FORMAT_S16 SNDRV_PCM_FORMAT_S16_LE 237 #define SNDRV_PCM_FORMAT_U16 SNDRV_PCM_FORMAT_U16_LE 238 #define SNDRV_PCM_FORMAT_S24 SNDRV_PCM_FORMAT_S24_LE 239 #define SNDRV_PCM_FORMAT_U24 SNDRV_PCM_FORMAT_U24_LE 240 #define SNDRV_PCM_FORMAT_S32 SNDRV_PCM_FORMAT_S32_LE 241 #define SNDRV_PCM_FORMAT_U32 SNDRV_PCM_FORMAT_U32_LE 242 #define SNDRV_PCM_FORMAT_FLOAT SNDRV_PCM_FORMAT_FLOAT_LE 243 #define SNDRV_PCM_FORMAT_FLOAT64 SNDRV_PCM_FORMAT_FLOAT64_LE 244 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE 245 #endif 246 #ifdef SNDRV_BIG_ENDIAN 247 #define SNDRV_PCM_FORMAT_S16 SNDRV_PCM_FORMAT_S16_BE 248 #define SNDRV_PCM_FORMAT_U16 SNDRV_PCM_FORMAT_U16_BE 249 #define SNDRV_PCM_FORMAT_S24 SNDRV_PCM_FORMAT_S24_BE 250 #define SNDRV_PCM_FORMAT_U24 SNDRV_PCM_FORMAT_U24_BE 251 #define SNDRV_PCM_FORMAT_S32 SNDRV_PCM_FORMAT_S32_BE 252 #define SNDRV_PCM_FORMAT_U32 SNDRV_PCM_FORMAT_U32_BE 253 #define SNDRV_PCM_FORMAT_FLOAT SNDRV_PCM_FORMAT_FLOAT_BE 254 #define SNDRV_PCM_FORMAT_FLOAT64 SNDRV_PCM_FORMAT_FLOAT64_BE 255 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE 256 #endif 257 258 typedef int __bitwise snd_pcm_subformat_t; 259 #define SNDRV_PCM_SUBFORMAT_STD ((__force snd_pcm_subformat_t) 0) 260 #define SNDRV_PCM_SUBFORMAT_LAST SNDRV_PCM_SUBFORMAT_STD 261 262 #define SNDRV_PCM_INFO_MMAP 0x00000001 /* hardware supports mmap */ 263 #define SNDRV_PCM_INFO_MMAP_VALID 0x00000002 /* period data are valid during transfer */ 264 #define SNDRV_PCM_INFO_DOUBLE 0x00000004 /* Double buffering needed for PCM start/stop */ 265 #define SNDRV_PCM_INFO_BATCH 0x00000010 /* double buffering */ 266 #define SNDRV_PCM_INFO_INTERLEAVED 0x00000100 /* channels are interleaved */ 267 #define SNDRV_PCM_INFO_NONINTERLEAVED 0x00000200 /* channels are not interleaved */ 268 #define SNDRV_PCM_INFO_COMPLEX 0x00000400 /* complex frame organization (mmap only) */ 269 #define SNDRV_PCM_INFO_BLOCK_TRANSFER 0x00010000 /* hardware transfer block of samples */ 270 #define SNDRV_PCM_INFO_OVERRANGE 0x00020000 /* hardware supports ADC (capture) overrange detection */ 271 #define SNDRV_PCM_INFO_RESUME 0x00040000 /* hardware supports stream resume after suspend */ 272 #define SNDRV_PCM_INFO_PAUSE 0x00080000 /* pause ioctl is supported */ 273 #define SNDRV_PCM_INFO_HALF_DUPLEX 0x00100000 /* only half duplex */ 274 #define SNDRV_PCM_INFO_JOINT_DUPLEX 0x00200000 /* playback and capture stream are somewhat correlated */ 275 #define SNDRV_PCM_INFO_SYNC_START 0x00400000 /* pcm support some kind of sync go */ 276 #define SNDRV_PCM_INFO_NO_PERIOD_WAKEUP 0x00800000 /* period wakeup can be disabled */ 277 #define SNDRV_PCM_INFO_FIFO_IN_FRAMES 0x80000000 /* internal kernel flag - FIFO size is in frames */ 278 279 typedef int __bitwise snd_pcm_state_t; 280 #define SNDRV_PCM_STATE_OPEN ((__force snd_pcm_state_t) 0) /* stream is open */ 281 #define SNDRV_PCM_STATE_SETUP ((__force snd_pcm_state_t) 1) /* stream has a setup */ 282 #define SNDRV_PCM_STATE_PREPARED ((__force snd_pcm_state_t) 2) /* stream is ready to start */ 283 #define SNDRV_PCM_STATE_RUNNING ((__force snd_pcm_state_t) 3) /* stream is running */ 284 #define SNDRV_PCM_STATE_XRUN ((__force snd_pcm_state_t) 4) /* stream reached an xrun */ 285 #define SNDRV_PCM_STATE_DRAINING ((__force snd_pcm_state_t) 5) /* stream is draining */ 286 #define SNDRV_PCM_STATE_PAUSED ((__force snd_pcm_state_t) 6) /* stream is paused */ 287 #define SNDRV_PCM_STATE_SUSPENDED ((__force snd_pcm_state_t) 7) /* hardware is suspended */ 288 #define SNDRV_PCM_STATE_DISCONNECTED ((__force snd_pcm_state_t) 8) /* hardware is disconnected */ 289 #define SNDRV_PCM_STATE_LAST SNDRV_PCM_STATE_DISCONNECTED 290 291 enum { 292 SNDRV_PCM_MMAP_OFFSET_DATA = 0x00000000, 293 SNDRV_PCM_MMAP_OFFSET_STATUS = 0x80000000, 294 SNDRV_PCM_MMAP_OFFSET_CONTROL = 0x81000000, 295 }; 296 297 union snd_pcm_sync_id { 298 unsigned char id[16]; 299 unsigned short id16[8]; 300 unsigned int id32[4]; 301 }; 302 303 struct snd_pcm_info { 304 unsigned int device; /* RO/WR (control): device number */ 305 unsigned int subdevice; /* RO/WR (control): subdevice number */ 306 int stream; /* RO/WR (control): stream direction */ 307 int card; /* R: card number */ 308 unsigned char id[64]; /* ID (user selectable) */ 309 unsigned char name[80]; /* name of this device */ 310 unsigned char subname[32]; /* subdevice name */ 311 int dev_class; /* SNDRV_PCM_CLASS_* */ 312 int dev_subclass; /* SNDRV_PCM_SUBCLASS_* */ 313 unsigned int subdevices_count; 314 unsigned int subdevices_avail; 315 union snd_pcm_sync_id sync; /* hardware synchronization ID */ 316 unsigned char reserved[64]; /* reserved for future... */ 317 }; 318 319 typedef int snd_pcm_hw_param_t; 320 #define SNDRV_PCM_HW_PARAM_ACCESS 0 /* Access type */ 321 #define SNDRV_PCM_HW_PARAM_FORMAT 1 /* Format */ 322 #define SNDRV_PCM_HW_PARAM_SUBFORMAT 2 /* Subformat */ 323 #define SNDRV_PCM_HW_PARAM_FIRST_MASK SNDRV_PCM_HW_PARAM_ACCESS 324 #define SNDRV_PCM_HW_PARAM_LAST_MASK SNDRV_PCM_HW_PARAM_SUBFORMAT 325 326 #define SNDRV_PCM_HW_PARAM_SAMPLE_BITS 8 /* Bits per sample */ 327 #define SNDRV_PCM_HW_PARAM_FRAME_BITS 9 /* Bits per frame */ 328 #define SNDRV_PCM_HW_PARAM_CHANNELS 10 /* Channels */ 329 #define SNDRV_PCM_HW_PARAM_RATE 11 /* Approx rate */ 330 #define SNDRV_PCM_HW_PARAM_PERIOD_TIME 12 /* Approx distance between 331 * interrupts in us 332 */ 333 #define SNDRV_PCM_HW_PARAM_PERIOD_SIZE 13 /* Approx frames between 334 * interrupts 335 */ 336 #define SNDRV_PCM_HW_PARAM_PERIOD_BYTES 14 /* Approx bytes between 337 * interrupts 338 */ 339 #define SNDRV_PCM_HW_PARAM_PERIODS 15 /* Approx interrupts per 340 * buffer 341 */ 342 #define SNDRV_PCM_HW_PARAM_BUFFER_TIME 16 /* Approx duration of buffer 343 * in us 344 */ 345 #define SNDRV_PCM_HW_PARAM_BUFFER_SIZE 17 /* Size of buffer in frames */ 346 #define SNDRV_PCM_HW_PARAM_BUFFER_BYTES 18 /* Size of buffer in bytes */ 347 #define SNDRV_PCM_HW_PARAM_TICK_TIME 19 /* Approx tick duration in us */ 348 #define SNDRV_PCM_HW_PARAM_FIRST_INTERVAL SNDRV_PCM_HW_PARAM_SAMPLE_BITS 349 #define SNDRV_PCM_HW_PARAM_LAST_INTERVAL SNDRV_PCM_HW_PARAM_TICK_TIME 350 351 #define SNDRV_PCM_HW_PARAMS_NORESAMPLE (1<<0) /* avoid rate resampling */ 352 #define SNDRV_PCM_HW_PARAMS_EXPORT_BUFFER (1<<1) /* export buffer */ 353 #define SNDRV_PCM_HW_PARAMS_NO_PERIOD_WAKEUP (1<<2) /* disable period wakeups */ 354 355 struct snd_interval { 356 unsigned int min, max; 357 unsigned int openmin:1, 358 openmax:1, 359 integer:1, 360 empty:1; 361 }; 362 363 #define SNDRV_MASK_MAX 256 364 365 struct snd_mask { 366 __u32 bits[(SNDRV_MASK_MAX+31)/32]; 367 }; 368 369 struct snd_pcm_hw_params { 370 unsigned int flags; 371 struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK - 372 SNDRV_PCM_HW_PARAM_FIRST_MASK + 1]; 373 struct snd_mask mres[5]; /* reserved masks */ 374 struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL - 375 SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1]; 376 struct snd_interval ires[9]; /* reserved intervals */ 377 unsigned int rmask; /* W: requested masks */ 378 unsigned int cmask; /* R: changed masks */ 379 unsigned int info; /* R: Info flags for returned setup */ 380 unsigned int msbits; /* R: used most significant bits */ 381 unsigned int rate_num; /* R: rate numerator */ 382 unsigned int rate_den; /* R: rate denominator */ 383 snd_pcm_uframes_t fifo_size; /* R: chip FIFO size in frames */ 384 unsigned char reserved[64]; /* reserved for future */ 385 }; 386 387 enum { 388 SNDRV_PCM_TSTAMP_NONE = 0, 389 SNDRV_PCM_TSTAMP_ENABLE, 390 SNDRV_PCM_TSTAMP_LAST = SNDRV_PCM_TSTAMP_ENABLE, 391 }; 392 393 struct snd_pcm_sw_params { 394 int tstamp_mode; /* timestamp mode */ 395 unsigned int period_step; 396 unsigned int sleep_min; /* min ticks to sleep */ 397 snd_pcm_uframes_t avail_min; /* min avail frames for wakeup */ 398 snd_pcm_uframes_t xfer_align; /* obsolete: xfer size need to be a multiple */ 399 snd_pcm_uframes_t start_threshold; /* min hw_avail frames for automatic start */ 400 snd_pcm_uframes_t stop_threshold; /* min avail frames for automatic stop */ 401 snd_pcm_uframes_t silence_threshold; /* min distance from noise for silence filling */ 402 snd_pcm_uframes_t silence_size; /* silence block size */ 403 snd_pcm_uframes_t boundary; /* pointers wrap point */ 404 unsigned char reserved[64]; /* reserved for future */ 405 }; 406 407 struct snd_pcm_channel_info { 408 unsigned int channel; 409 __kernel_off_t offset; /* mmap offset */ 410 unsigned int first; /* offset to first sample in bits */ 411 unsigned int step; /* samples distance in bits */ 412 }; 413 414 struct snd_pcm_status { 415 snd_pcm_state_t state; /* stream state */ 416 struct timespec trigger_tstamp; /* time when stream was started/stopped/paused */ 417 struct timespec tstamp; /* reference timestamp */ 418 snd_pcm_uframes_t appl_ptr; /* appl ptr */ 419 snd_pcm_uframes_t hw_ptr; /* hw ptr */ 420 snd_pcm_sframes_t delay; /* current delay in frames */ 421 snd_pcm_uframes_t avail; /* number of frames available */ 422 snd_pcm_uframes_t avail_max; /* max frames available on hw since last status */ 423 snd_pcm_uframes_t overrange; /* count of ADC (capture) overrange detections from last status */ 424 snd_pcm_state_t suspended_state; /* suspended stream state */ 425 unsigned char reserved[60]; /* must be filled with zero */ 426 }; 427 428 struct snd_pcm_mmap_status { 429 snd_pcm_state_t state; /* RO: state - SNDRV_PCM_STATE_XXXX */ 430 int pad1; /* Needed for 64 bit alignment */ 431 snd_pcm_uframes_t hw_ptr; /* RO: hw ptr (0...boundary-1) */ 432 struct timespec tstamp; /* Timestamp */ 433 snd_pcm_state_t suspended_state; /* RO: suspended stream state */ 434 }; 435 436 struct snd_pcm_mmap_control { 437 snd_pcm_uframes_t appl_ptr; /* RW: appl ptr (0...boundary-1) */ 438 snd_pcm_uframes_t avail_min; /* RW: min available frames for wakeup */ 439 }; 440 441 #define SNDRV_PCM_SYNC_PTR_HWSYNC (1<<0) /* execute hwsync */ 442 #define SNDRV_PCM_SYNC_PTR_APPL (1<<1) /* get appl_ptr from driver (r/w op) */ 443 #define SNDRV_PCM_SYNC_PTR_AVAIL_MIN (1<<2) /* get avail_min from driver */ 444 445 struct snd_pcm_sync_ptr { 446 unsigned int flags; 447 union { 448 struct snd_pcm_mmap_status status; 449 unsigned char reserved[64]; 450 } s; 451 union { 452 struct snd_pcm_mmap_control control; 453 unsigned char reserved[64]; 454 } c; 455 }; 456 457 struct snd_xferi { 458 snd_pcm_sframes_t result; 459 void __user *buf; 460 snd_pcm_uframes_t frames; 461 }; 462 463 struct snd_xfern { 464 snd_pcm_sframes_t result; 465 void __user * __user *bufs; 466 snd_pcm_uframes_t frames; 467 }; 468 469 enum { 470 SNDRV_PCM_TSTAMP_TYPE_GETTIMEOFDAY = 0, /* gettimeofday equivalent */ 471 SNDRV_PCM_TSTAMP_TYPE_MONOTONIC, /* posix_clock_monotonic equivalent */ 472 SNDRV_PCM_TSTAMP_TYPE_LAST = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC, 473 }; 474 475 #define SNDRV_PCM_IOCTL_PVERSION _IOR('A', 0x00, int) 476 #define SNDRV_PCM_IOCTL_INFO _IOR('A', 0x01, struct snd_pcm_info) 477 #define SNDRV_PCM_IOCTL_TSTAMP _IOW('A', 0x02, int) 478 #define SNDRV_PCM_IOCTL_TTSTAMP _IOW('A', 0x03, int) 479 #define SNDRV_PCM_IOCTL_HW_REFINE _IOWR('A', 0x10, struct snd_pcm_hw_params) 480 #define SNDRV_PCM_IOCTL_HW_PARAMS _IOWR('A', 0x11, struct snd_pcm_hw_params) 481 #define SNDRV_PCM_IOCTL_HW_FREE _IO('A', 0x12) 482 #define SNDRV_PCM_IOCTL_SW_PARAMS _IOWR('A', 0x13, struct snd_pcm_sw_params) 483 #define SNDRV_PCM_IOCTL_STATUS _IOR('A', 0x20, struct snd_pcm_status) 484 #define SNDRV_PCM_IOCTL_DELAY _IOR('A', 0x21, snd_pcm_sframes_t) 485 #define SNDRV_PCM_IOCTL_HWSYNC _IO('A', 0x22) 486 #define SNDRV_PCM_IOCTL_SYNC_PTR _IOWR('A', 0x23, struct snd_pcm_sync_ptr) 487 #define SNDRV_PCM_IOCTL_CHANNEL_INFO _IOR('A', 0x32, struct snd_pcm_channel_info) 488 #define SNDRV_PCM_IOCTL_PREPARE _IO('A', 0x40) 489 #define SNDRV_PCM_IOCTL_RESET _IO('A', 0x41) 490 #define SNDRV_PCM_IOCTL_START _IO('A', 0x42) 491 #define SNDRV_PCM_IOCTL_DROP _IO('A', 0x43) 492 #define SNDRV_PCM_IOCTL_DRAIN _IO('A', 0x44) 493 #define SNDRV_PCM_IOCTL_PAUSE _IOW('A', 0x45, int) 494 #define SNDRV_PCM_IOCTL_REWIND _IOW('A', 0x46, snd_pcm_uframes_t) 495 #define SNDRV_PCM_IOCTL_RESUME _IO('A', 0x47) 496 #define SNDRV_PCM_IOCTL_XRUN _IO('A', 0x48) 497 #define SNDRV_PCM_IOCTL_FORWARD _IOW('A', 0x49, snd_pcm_uframes_t) 498 #define SNDRV_PCM_IOCTL_WRITEI_FRAMES _IOW('A', 0x50, struct snd_xferi) 499 #define SNDRV_PCM_IOCTL_READI_FRAMES _IOR('A', 0x51, struct snd_xferi) 500 #define SNDRV_PCM_IOCTL_WRITEN_FRAMES _IOW('A', 0x52, struct snd_xfern) 501 #define SNDRV_PCM_IOCTL_READN_FRAMES _IOR('A', 0x53, struct snd_xfern) 502 #define SNDRV_PCM_IOCTL_LINK _IOW('A', 0x60, int) 503 #define SNDRV_PCM_IOCTL_UNLINK _IO('A', 0x61) 504 505 /***************************************************************************** 506 * * 507 * MIDI v1.0 interface * 508 * * 509 *****************************************************************************/ 510 511 /* 512 * Raw MIDI section - /dev/snd/midi?? 513 */ 514 515 #define SNDRV_RAWMIDI_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 0) 516 517 enum { 518 SNDRV_RAWMIDI_STREAM_OUTPUT = 0, 519 SNDRV_RAWMIDI_STREAM_INPUT, 520 SNDRV_RAWMIDI_STREAM_LAST = SNDRV_RAWMIDI_STREAM_INPUT, 521 }; 522 523 #define SNDRV_RAWMIDI_INFO_OUTPUT 0x00000001 524 #define SNDRV_RAWMIDI_INFO_INPUT 0x00000002 525 #define SNDRV_RAWMIDI_INFO_DUPLEX 0x00000004 526 527 struct snd_rawmidi_info { 528 unsigned int device; /* RO/WR (control): device number */ 529 unsigned int subdevice; /* RO/WR (control): subdevice number */ 530 int stream; /* WR: stream */ 531 int card; /* R: card number */ 532 unsigned int flags; /* SNDRV_RAWMIDI_INFO_XXXX */ 533 unsigned char id[64]; /* ID (user selectable) */ 534 unsigned char name[80]; /* name of device */ 535 unsigned char subname[32]; /* name of active or selected subdevice */ 536 unsigned int subdevices_count; 537 unsigned int subdevices_avail; 538 unsigned char reserved[64]; /* reserved for future use */ 539 }; 540 541 struct snd_rawmidi_params { 542 int stream; 543 size_t buffer_size; /* queue size in bytes */ 544 size_t avail_min; /* minimum avail bytes for wakeup */ 545 unsigned int no_active_sensing: 1; /* do not send active sensing byte in close() */ 546 unsigned char reserved[16]; /* reserved for future use */ 547 }; 548 549 struct snd_rawmidi_status { 550 int stream; 551 struct timespec tstamp; /* Timestamp */ 552 size_t avail; /* available bytes */ 553 size_t xruns; /* count of overruns since last status (in bytes) */ 554 unsigned char reserved[16]; /* reserved for future use */ 555 }; 556 557 #define SNDRV_RAWMIDI_IOCTL_PVERSION _IOR('W', 0x00, int) 558 #define SNDRV_RAWMIDI_IOCTL_INFO _IOR('W', 0x01, struct snd_rawmidi_info) 559 #define SNDRV_RAWMIDI_IOCTL_PARAMS _IOWR('W', 0x10, struct snd_rawmidi_params) 560 #define SNDRV_RAWMIDI_IOCTL_STATUS _IOWR('W', 0x20, struct snd_rawmidi_status) 561 #define SNDRV_RAWMIDI_IOCTL_DROP _IOW('W', 0x30, int) 562 #define SNDRV_RAWMIDI_IOCTL_DRAIN _IOW('W', 0x31, int) 563 564 /* 565 * Timer section - /dev/snd/timer 566 */ 567 568 #define SNDRV_TIMER_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 6) 569 570 enum { 571 SNDRV_TIMER_CLASS_NONE = -1, 572 SNDRV_TIMER_CLASS_SLAVE = 0, 573 SNDRV_TIMER_CLASS_GLOBAL, 574 SNDRV_TIMER_CLASS_CARD, 575 SNDRV_TIMER_CLASS_PCM, 576 SNDRV_TIMER_CLASS_LAST = SNDRV_TIMER_CLASS_PCM, 577 }; 578 579 /* slave timer classes */ 580 enum { 581 SNDRV_TIMER_SCLASS_NONE = 0, 582 SNDRV_TIMER_SCLASS_APPLICATION, 583 SNDRV_TIMER_SCLASS_SEQUENCER, /* alias */ 584 SNDRV_TIMER_SCLASS_OSS_SEQUENCER, /* alias */ 585 SNDRV_TIMER_SCLASS_LAST = SNDRV_TIMER_SCLASS_OSS_SEQUENCER, 586 }; 587 588 /* global timers (device member) */ 589 #define SNDRV_TIMER_GLOBAL_SYSTEM 0 590 #define SNDRV_TIMER_GLOBAL_RTC 1 591 #define SNDRV_TIMER_GLOBAL_HPET 2 592 #define SNDRV_TIMER_GLOBAL_HRTIMER 3 593 594 /* info flags */ 595 #define SNDRV_TIMER_FLG_SLAVE (1<<0) /* cannot be controlled */ 596 597 struct snd_timer_id { 598 int dev_class; 599 int dev_sclass; 600 int card; 601 int device; 602 int subdevice; 603 }; 604 605 struct snd_timer_ginfo { 606 struct snd_timer_id tid; /* requested timer ID */ 607 unsigned int flags; /* timer flags - SNDRV_TIMER_FLG_* */ 608 int card; /* card number */ 609 unsigned char id[64]; /* timer identification */ 610 unsigned char name[80]; /* timer name */ 611 unsigned long reserved0; /* reserved for future use */ 612 unsigned long resolution; /* average period resolution in ns */ 613 unsigned long resolution_min; /* minimal period resolution in ns */ 614 unsigned long resolution_max; /* maximal period resolution in ns */ 615 unsigned int clients; /* active timer clients */ 616 unsigned char reserved[32]; 617 }; 618 619 struct snd_timer_gparams { 620 struct snd_timer_id tid; /* requested timer ID */ 621 unsigned long period_num; /* requested precise period duration (in seconds) - numerator */ 622 unsigned long period_den; /* requested precise period duration (in seconds) - denominator */ 623 unsigned char reserved[32]; 624 }; 625 626 struct snd_timer_gstatus { 627 struct snd_timer_id tid; /* requested timer ID */ 628 unsigned long resolution; /* current period resolution in ns */ 629 unsigned long resolution_num; /* precise current period resolution (in seconds) - numerator */ 630 unsigned long resolution_den; /* precise current period resolution (in seconds) - denominator */ 631 unsigned char reserved[32]; 632 }; 633 634 struct snd_timer_select { 635 struct snd_timer_id id; /* bind to timer ID */ 636 unsigned char reserved[32]; /* reserved */ 637 }; 638 639 struct snd_timer_info { 640 unsigned int flags; /* timer flags - SNDRV_TIMER_FLG_* */ 641 int card; /* card number */ 642 unsigned char id[64]; /* timer identificator */ 643 unsigned char name[80]; /* timer name */ 644 unsigned long reserved0; /* reserved for future use */ 645 unsigned long resolution; /* average period resolution in ns */ 646 unsigned char reserved[64]; /* reserved */ 647 }; 648 649 #define SNDRV_TIMER_PSFLG_AUTO (1<<0) /* auto start, otherwise one-shot */ 650 #define SNDRV_TIMER_PSFLG_EXCLUSIVE (1<<1) /* exclusive use, precise start/stop/pause/continue */ 651 #define SNDRV_TIMER_PSFLG_EARLY_EVENT (1<<2) /* write early event to the poll queue */ 652 653 struct snd_timer_params { 654 unsigned int flags; /* flags - SNDRV_MIXER_PSFLG_* */ 655 unsigned int ticks; /* requested resolution in ticks */ 656 unsigned int queue_size; /* total size of queue (32-1024) */ 657 unsigned int reserved0; /* reserved, was: failure locations */ 658 unsigned int filter; /* event filter (bitmask of SNDRV_TIMER_EVENT_*) */ 659 unsigned char reserved[60]; /* reserved */ 660 }; 661 662 struct snd_timer_status { 663 struct timespec tstamp; /* Timestamp - last update */ 664 unsigned int resolution; /* current period resolution in ns */ 665 unsigned int lost; /* counter of master tick lost */ 666 unsigned int overrun; /* count of read queue overruns */ 667 unsigned int queue; /* used queue size */ 668 unsigned char reserved[64]; /* reserved */ 669 }; 670 671 #define SNDRV_TIMER_IOCTL_PVERSION _IOR('T', 0x00, int) 672 #define SNDRV_TIMER_IOCTL_NEXT_DEVICE _IOWR('T', 0x01, struct snd_timer_id) 673 #define SNDRV_TIMER_IOCTL_TREAD _IOW('T', 0x02, int) 674 #define SNDRV_TIMER_IOCTL_GINFO _IOWR('T', 0x03, struct snd_timer_ginfo) 675 #define SNDRV_TIMER_IOCTL_GPARAMS _IOW('T', 0x04, struct snd_timer_gparams) 676 #define SNDRV_TIMER_IOCTL_GSTATUS _IOWR('T', 0x05, struct snd_timer_gstatus) 677 #define SNDRV_TIMER_IOCTL_SELECT _IOW('T', 0x10, struct snd_timer_select) 678 #define SNDRV_TIMER_IOCTL_INFO _IOR('T', 0x11, struct snd_timer_info) 679 #define SNDRV_TIMER_IOCTL_PARAMS _IOW('T', 0x12, struct snd_timer_params) 680 #define SNDRV_TIMER_IOCTL_STATUS _IOR('T', 0x14, struct snd_timer_status) 681 /* The following four ioctls are changed since 1.0.9 due to confliction */ 682 #define SNDRV_TIMER_IOCTL_START _IO('T', 0xa0) 683 #define SNDRV_TIMER_IOCTL_STOP _IO('T', 0xa1) 684 #define SNDRV_TIMER_IOCTL_CONTINUE _IO('T', 0xa2) 685 #define SNDRV_TIMER_IOCTL_PAUSE _IO('T', 0xa3) 686 687 struct snd_timer_read { 688 unsigned int resolution; 689 unsigned int ticks; 690 }; 691 692 enum { 693 SNDRV_TIMER_EVENT_RESOLUTION = 0, /* val = resolution in ns */ 694 SNDRV_TIMER_EVENT_TICK, /* val = ticks */ 695 SNDRV_TIMER_EVENT_START, /* val = resolution in ns */ 696 SNDRV_TIMER_EVENT_STOP, /* val = 0 */ 697 SNDRV_TIMER_EVENT_CONTINUE, /* val = resolution in ns */ 698 SNDRV_TIMER_EVENT_PAUSE, /* val = 0 */ 699 SNDRV_TIMER_EVENT_EARLY, /* val = 0, early event */ 700 SNDRV_TIMER_EVENT_SUSPEND, /* val = 0 */ 701 SNDRV_TIMER_EVENT_RESUME, /* val = resolution in ns */ 702 /* master timer events for slave timer instances */ 703 SNDRV_TIMER_EVENT_MSTART = SNDRV_TIMER_EVENT_START + 10, 704 SNDRV_TIMER_EVENT_MSTOP = SNDRV_TIMER_EVENT_STOP + 10, 705 SNDRV_TIMER_EVENT_MCONTINUE = SNDRV_TIMER_EVENT_CONTINUE + 10, 706 SNDRV_TIMER_EVENT_MPAUSE = SNDRV_TIMER_EVENT_PAUSE + 10, 707 SNDRV_TIMER_EVENT_MSUSPEND = SNDRV_TIMER_EVENT_SUSPEND + 10, 708 SNDRV_TIMER_EVENT_MRESUME = SNDRV_TIMER_EVENT_RESUME + 10, 709 }; 710 711 struct snd_timer_tread { 712 int event; 713 struct timespec tstamp; 714 unsigned int val; 715 }; 716 717 /**************************************************************************** 718 * * 719 * Section for driver control interface - /dev/snd/control? * 720 * * 721 ****************************************************************************/ 722 723 #define SNDRV_CTL_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 7) 724 725 struct snd_ctl_card_info { 726 int card; /* card number */ 727 int pad; /* reserved for future (was type) */ 728 unsigned char id[16]; /* ID of card (user selectable) */ 729 unsigned char driver[16]; /* Driver name */ 730 unsigned char name[32]; /* Short name of soundcard */ 731 unsigned char longname[80]; /* name + info text about soundcard */ 732 unsigned char reserved_[16]; /* reserved for future (was ID of mixer) */ 733 unsigned char mixername[80]; /* visual mixer identification */ 734 unsigned char components[128]; /* card components / fine identification, delimited with one space (AC97 etc..) */ 735 }; 736 737 typedef int __bitwise snd_ctl_elem_type_t; 738 #define SNDRV_CTL_ELEM_TYPE_NONE ((__force snd_ctl_elem_type_t) 0) /* invalid */ 739 #define SNDRV_CTL_ELEM_TYPE_BOOLEAN ((__force snd_ctl_elem_type_t) 1) /* boolean type */ 740 #define SNDRV_CTL_ELEM_TYPE_INTEGER ((__force snd_ctl_elem_type_t) 2) /* integer type */ 741 #define SNDRV_CTL_ELEM_TYPE_ENUMERATED ((__force snd_ctl_elem_type_t) 3) /* enumerated type */ 742 #define SNDRV_CTL_ELEM_TYPE_BYTES ((__force snd_ctl_elem_type_t) 4) /* byte array */ 743 #define SNDRV_CTL_ELEM_TYPE_IEC958 ((__force snd_ctl_elem_type_t) 5) /* IEC958 (S/PDIF) setup */ 744 #define SNDRV_CTL_ELEM_TYPE_INTEGER64 ((__force snd_ctl_elem_type_t) 6) /* 64-bit integer type */ 745 #define SNDRV_CTL_ELEM_TYPE_LAST SNDRV_CTL_ELEM_TYPE_INTEGER64 746 747 typedef int __bitwise snd_ctl_elem_iface_t; 748 #define SNDRV_CTL_ELEM_IFACE_CARD ((__force snd_ctl_elem_iface_t) 0) /* global control */ 749 #define SNDRV_CTL_ELEM_IFACE_HWDEP ((__force snd_ctl_elem_iface_t) 1) /* hardware dependent device */ 750 #define SNDRV_CTL_ELEM_IFACE_MIXER ((__force snd_ctl_elem_iface_t) 2) /* virtual mixer device */ 751 #define SNDRV_CTL_ELEM_IFACE_PCM ((__force snd_ctl_elem_iface_t) 3) /* PCM device */ 752 #define SNDRV_CTL_ELEM_IFACE_RAWMIDI ((__force snd_ctl_elem_iface_t) 4) /* RawMidi device */ 753 #define SNDRV_CTL_ELEM_IFACE_TIMER ((__force snd_ctl_elem_iface_t) 5) /* timer device */ 754 #define SNDRV_CTL_ELEM_IFACE_SEQUENCER ((__force snd_ctl_elem_iface_t) 6) /* sequencer client */ 755 #define SNDRV_CTL_ELEM_IFACE_LAST SNDRV_CTL_ELEM_IFACE_SEQUENCER 756 757 #define SNDRV_CTL_ELEM_ACCESS_READ (1<<0) 758 #define SNDRV_CTL_ELEM_ACCESS_WRITE (1<<1) 759 #define SNDRV_CTL_ELEM_ACCESS_READWRITE (SNDRV_CTL_ELEM_ACCESS_READ|SNDRV_CTL_ELEM_ACCESS_WRITE) 760 #define SNDRV_CTL_ELEM_ACCESS_VOLATILE (1<<2) /* control value may be changed without a notification */ 761 #define SNDRV_CTL_ELEM_ACCESS_TIMESTAMP (1<<3) /* when was control changed */ 762 #define SNDRV_CTL_ELEM_ACCESS_TLV_READ (1<<4) /* TLV read is possible */ 763 #define SNDRV_CTL_ELEM_ACCESS_TLV_WRITE (1<<5) /* TLV write is possible */ 764 #define SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE (SNDRV_CTL_ELEM_ACCESS_TLV_READ|SNDRV_CTL_ELEM_ACCESS_TLV_WRITE) 765 #define SNDRV_CTL_ELEM_ACCESS_TLV_COMMAND (1<<6) /* TLV command is possible */ 766 #define SNDRV_CTL_ELEM_ACCESS_INACTIVE (1<<8) /* control does actually nothing, but may be updated */ 767 #define SNDRV_CTL_ELEM_ACCESS_LOCK (1<<9) /* write lock */ 768 #define SNDRV_CTL_ELEM_ACCESS_OWNER (1<<10) /* write lock owner */ 769 #define SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK (1<<28) /* kernel use a TLV callback */ 770 #define SNDRV_CTL_ELEM_ACCESS_USER (1<<29) /* user space element */ 771 /* bits 30 and 31 are obsoleted (for indirect access) */ 772 773 /* for further details see the ACPI and PCI power management specification */ 774 #define SNDRV_CTL_POWER_D0 0x0000 /* full On */ 775 #define SNDRV_CTL_POWER_D1 0x0100 /* partial On */ 776 #define SNDRV_CTL_POWER_D2 0x0200 /* partial On */ 777 #define SNDRV_CTL_POWER_D3 0x0300 /* Off */ 778 #define SNDRV_CTL_POWER_D3hot (SNDRV_CTL_POWER_D3|0x0000) /* Off, with power */ 779 #define SNDRV_CTL_POWER_D3cold (SNDRV_CTL_POWER_D3|0x0001) /* Off, without power */ 780 781 struct snd_ctl_elem_id { 782 unsigned int numid; /* numeric identifier, zero = invalid */ 783 snd_ctl_elem_iface_t iface; /* interface identifier */ 784 unsigned int device; /* device/client number */ 785 unsigned int subdevice; /* subdevice (substream) number */ 786 unsigned char name[44]; /* ASCII name of item */ 787 unsigned int index; /* index of item */ 788 }; 789 790 struct snd_ctl_elem_list { 791 unsigned int offset; /* W: first element ID to get */ 792 unsigned int space; /* W: count of element IDs to get */ 793 unsigned int used; /* R: count of element IDs set */ 794 unsigned int count; /* R: count of all elements */ 795 struct snd_ctl_elem_id __user *pids; /* R: IDs */ 796 unsigned char reserved[50]; 797 }; 798 799 struct snd_ctl_elem_info { 800 struct snd_ctl_elem_id id; /* W: element ID */ 801 snd_ctl_elem_type_t type; /* R: value type - SNDRV_CTL_ELEM_TYPE_* */ 802 unsigned int access; /* R: value access (bitmask) - SNDRV_CTL_ELEM_ACCESS_* */ 803 unsigned int count; /* count of values */ 804 __kernel_pid_t owner; /* owner's PID of this control */ 805 union { 806 struct { 807 long min; /* R: minimum value */ 808 long max; /* R: maximum value */ 809 long step; /* R: step (0 variable) */ 810 } integer; 811 struct { 812 long long min; /* R: minimum value */ 813 long long max; /* R: maximum value */ 814 long long step; /* R: step (0 variable) */ 815 } integer64; 816 struct { 817 unsigned int items; /* R: number of items */ 818 unsigned int item; /* W: item number */ 819 char name[64]; /* R: value name */ 820 __u64 names_ptr; /* W: names list (ELEM_ADD only) */ 821 unsigned int names_length; 822 } enumerated; 823 unsigned char reserved[128]; 824 } value; 825 union { 826 unsigned short d[4]; /* dimensions */ 827 unsigned short *d_ptr; /* indirect - obsoleted */ 828 } dimen; 829 unsigned char reserved[64-4*sizeof(unsigned short)]; 830 }; 831 832 struct snd_ctl_elem_value { 833 struct snd_ctl_elem_id id; /* W: element ID */ 834 unsigned int indirect: 1; /* W: indirect access - obsoleted */ 835 union { 836 union { 837 long value[128]; 838 long *value_ptr; /* obsoleted */ 839 } integer; 840 union { 841 long long value[64]; 842 long long *value_ptr; /* obsoleted */ 843 } integer64; 844 union { 845 unsigned int item[128]; 846 unsigned int *item_ptr; /* obsoleted */ 847 } enumerated; 848 union { 849 unsigned char data[512]; 850 unsigned char *data_ptr; /* obsoleted */ 851 } bytes; 852 struct snd_aes_iec958 iec958; 853 } value; /* RO */ 854 struct timespec tstamp; 855 unsigned char reserved[128-sizeof(struct timespec)]; 856 }; 857 858 struct snd_ctl_tlv { 859 unsigned int numid; /* control element numeric identification */ 860 unsigned int length; /* in bytes aligned to 4 */ 861 unsigned int tlv[0]; /* first TLV */ 862 }; 863 864 #define SNDRV_CTL_IOCTL_PVERSION _IOR('U', 0x00, int) 865 #define SNDRV_CTL_IOCTL_CARD_INFO _IOR('U', 0x01, struct snd_ctl_card_info) 866 #define SNDRV_CTL_IOCTL_ELEM_LIST _IOWR('U', 0x10, struct snd_ctl_elem_list) 867 #define SNDRV_CTL_IOCTL_ELEM_INFO _IOWR('U', 0x11, struct snd_ctl_elem_info) 868 #define SNDRV_CTL_IOCTL_ELEM_READ _IOWR('U', 0x12, struct snd_ctl_elem_value) 869 #define SNDRV_CTL_IOCTL_ELEM_WRITE _IOWR('U', 0x13, struct snd_ctl_elem_value) 870 #define SNDRV_CTL_IOCTL_ELEM_LOCK _IOW('U', 0x14, struct snd_ctl_elem_id) 871 #define SNDRV_CTL_IOCTL_ELEM_UNLOCK _IOW('U', 0x15, struct snd_ctl_elem_id) 872 #define SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS _IOWR('U', 0x16, int) 873 #define SNDRV_CTL_IOCTL_ELEM_ADD _IOWR('U', 0x17, struct snd_ctl_elem_info) 874 #define SNDRV_CTL_IOCTL_ELEM_REPLACE _IOWR('U', 0x18, struct snd_ctl_elem_info) 875 #define SNDRV_CTL_IOCTL_ELEM_REMOVE _IOWR('U', 0x19, struct snd_ctl_elem_id) 876 #define SNDRV_CTL_IOCTL_TLV_READ _IOWR('U', 0x1a, struct snd_ctl_tlv) 877 #define SNDRV_CTL_IOCTL_TLV_WRITE _IOWR('U', 0x1b, struct snd_ctl_tlv) 878 #define SNDRV_CTL_IOCTL_TLV_COMMAND _IOWR('U', 0x1c, struct snd_ctl_tlv) 879 #define SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE _IOWR('U', 0x20, int) 880 #define SNDRV_CTL_IOCTL_HWDEP_INFO _IOR('U', 0x21, struct snd_hwdep_info) 881 #define SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE _IOR('U', 0x30, int) 882 #define SNDRV_CTL_IOCTL_PCM_INFO _IOWR('U', 0x31, struct snd_pcm_info) 883 #define SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE _IOW('U', 0x32, int) 884 #define SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE _IOWR('U', 0x40, int) 885 #define SNDRV_CTL_IOCTL_RAWMIDI_INFO _IOWR('U', 0x41, struct snd_rawmidi_info) 886 #define SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE _IOW('U', 0x42, int) 887 #define SNDRV_CTL_IOCTL_POWER _IOWR('U', 0xd0, int) 888 #define SNDRV_CTL_IOCTL_POWER_STATE _IOR('U', 0xd1, int) 889 890 /* 891 * Read interface. 892 */ 893 894 enum sndrv_ctl_event_type { 895 SNDRV_CTL_EVENT_ELEM = 0, 896 SNDRV_CTL_EVENT_LAST = SNDRV_CTL_EVENT_ELEM, 897 }; 898 899 #define SNDRV_CTL_EVENT_MASK_VALUE (1<<0) /* element value was changed */ 900 #define SNDRV_CTL_EVENT_MASK_INFO (1<<1) /* element info was changed */ 901 #define SNDRV_CTL_EVENT_MASK_ADD (1<<2) /* element was added */ 902 #define SNDRV_CTL_EVENT_MASK_TLV (1<<3) /* element TLV tree was changed */ 903 #define SNDRV_CTL_EVENT_MASK_REMOVE (~0U) /* element was removed */ 904 905 struct snd_ctl_event { 906 int type; /* event type - SNDRV_CTL_EVENT_* */ 907 union { 908 struct { 909 unsigned int mask; 910 struct snd_ctl_elem_id id; 911 } elem; 912 unsigned char data8[60]; 913 } data; 914 }; 915 916 /* 917 * Control names 918 */ 919 920 #define SNDRV_CTL_NAME_NONE "" 921 #define SNDRV_CTL_NAME_PLAYBACK "Playback " 922 #define SNDRV_CTL_NAME_CAPTURE "Capture " 923 924 #define SNDRV_CTL_NAME_IEC958_NONE "" 925 #define SNDRV_CTL_NAME_IEC958_SWITCH "Switch" 926 #define SNDRV_CTL_NAME_IEC958_VOLUME "Volume" 927 #define SNDRV_CTL_NAME_IEC958_DEFAULT "Default" 928 #define SNDRV_CTL_NAME_IEC958_MASK "Mask" 929 #define SNDRV_CTL_NAME_IEC958_CON_MASK "Con Mask" 930 #define SNDRV_CTL_NAME_IEC958_PRO_MASK "Pro Mask" 931 #define SNDRV_CTL_NAME_IEC958_PCM_STREAM "PCM Stream" 932 #define SNDRV_CTL_NAME_IEC958(expl,direction,what) "IEC958 " expl SNDRV_CTL_NAME_##direction SNDRV_CTL_NAME_IEC958_##what 933 934 #endif /* __SOUND_ASOUND_H */ 935