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 /* channel positions */ 476 enum { 477 /* this follows the alsa-lib mixer channel value + 1 */ 478 SNDRV_CHMAP_UNKNOWN = 0, 479 SNDRV_CHMAP_FL, /* front left */ 480 SNDRV_CHMAP_FR, /* front right */ 481 SNDRV_CHMAP_RL, /* rear left */ 482 SNDRV_CHMAP_RR, /* rear right */ 483 SNDRV_CHMAP_FC, /* front center */ 484 SNDRV_CHMAP_LFE, /* LFE */ 485 SNDRV_CHMAP_SL, /* side left */ 486 SNDRV_CHMAP_SR, /* side right */ 487 SNDRV_CHMAP_RC, /* rear center */ 488 /* new definitions */ 489 SNDRV_CHMAP_FLC, /* front left center */ 490 SNDRV_CHMAP_FRC, /* front right center */ 491 SNDRV_CHMAP_RLC, /* rear left center */ 492 SNDRV_CHMAP_RRC, /* rear right center */ 493 SNDRV_CHMAP_FLW, /* front left wide */ 494 SNDRV_CHMAP_FRW, /* front right wide */ 495 SNDRV_CHMAP_FLH, /* front left high */ 496 SNDRV_CHMAP_FCH, /* front center high */ 497 SNDRV_CHMAP_FRH, /* front right high */ 498 SNDRV_CHMAP_TC, /* top center */ 499 SNDRV_CHMAP_NA, /* N/A, silent */ 500 SNDRV_CHMAP_LAST = SNDRV_CHMAP_NA, 501 }; 502 503 #define SNDRV_CHMAP_POSITION_MASK 0xffff 504 #define SNDRV_CHMAP_PHASE_INVERSE (0x01 << 16) 505 #define SNDRV_CHMAP_DRIVER_SPEC (0x02 << 16) 506 507 #define SNDRV_PCM_IOCTL_PVERSION _IOR('A', 0x00, int) 508 #define SNDRV_PCM_IOCTL_INFO _IOR('A', 0x01, struct snd_pcm_info) 509 #define SNDRV_PCM_IOCTL_TSTAMP _IOW('A', 0x02, int) 510 #define SNDRV_PCM_IOCTL_TTSTAMP _IOW('A', 0x03, int) 511 #define SNDRV_PCM_IOCTL_HW_REFINE _IOWR('A', 0x10, struct snd_pcm_hw_params) 512 #define SNDRV_PCM_IOCTL_HW_PARAMS _IOWR('A', 0x11, struct snd_pcm_hw_params) 513 #define SNDRV_PCM_IOCTL_HW_FREE _IO('A', 0x12) 514 #define SNDRV_PCM_IOCTL_SW_PARAMS _IOWR('A', 0x13, struct snd_pcm_sw_params) 515 #define SNDRV_PCM_IOCTL_STATUS _IOR('A', 0x20, struct snd_pcm_status) 516 #define SNDRV_PCM_IOCTL_DELAY _IOR('A', 0x21, snd_pcm_sframes_t) 517 #define SNDRV_PCM_IOCTL_HWSYNC _IO('A', 0x22) 518 #define SNDRV_PCM_IOCTL_SYNC_PTR _IOWR('A', 0x23, struct snd_pcm_sync_ptr) 519 #define SNDRV_PCM_IOCTL_CHANNEL_INFO _IOR('A', 0x32, struct snd_pcm_channel_info) 520 #define SNDRV_PCM_IOCTL_PREPARE _IO('A', 0x40) 521 #define SNDRV_PCM_IOCTL_RESET _IO('A', 0x41) 522 #define SNDRV_PCM_IOCTL_START _IO('A', 0x42) 523 #define SNDRV_PCM_IOCTL_DROP _IO('A', 0x43) 524 #define SNDRV_PCM_IOCTL_DRAIN _IO('A', 0x44) 525 #define SNDRV_PCM_IOCTL_PAUSE _IOW('A', 0x45, int) 526 #define SNDRV_PCM_IOCTL_REWIND _IOW('A', 0x46, snd_pcm_uframes_t) 527 #define SNDRV_PCM_IOCTL_RESUME _IO('A', 0x47) 528 #define SNDRV_PCM_IOCTL_XRUN _IO('A', 0x48) 529 #define SNDRV_PCM_IOCTL_FORWARD _IOW('A', 0x49, snd_pcm_uframes_t) 530 #define SNDRV_PCM_IOCTL_WRITEI_FRAMES _IOW('A', 0x50, struct snd_xferi) 531 #define SNDRV_PCM_IOCTL_READI_FRAMES _IOR('A', 0x51, struct snd_xferi) 532 #define SNDRV_PCM_IOCTL_WRITEN_FRAMES _IOW('A', 0x52, struct snd_xfern) 533 #define SNDRV_PCM_IOCTL_READN_FRAMES _IOR('A', 0x53, struct snd_xfern) 534 #define SNDRV_PCM_IOCTL_LINK _IOW('A', 0x60, int) 535 #define SNDRV_PCM_IOCTL_UNLINK _IO('A', 0x61) 536 537 /***************************************************************************** 538 * * 539 * MIDI v1.0 interface * 540 * * 541 *****************************************************************************/ 542 543 /* 544 * Raw MIDI section - /dev/snd/midi?? 545 */ 546 547 #define SNDRV_RAWMIDI_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 0) 548 549 enum { 550 SNDRV_RAWMIDI_STREAM_OUTPUT = 0, 551 SNDRV_RAWMIDI_STREAM_INPUT, 552 SNDRV_RAWMIDI_STREAM_LAST = SNDRV_RAWMIDI_STREAM_INPUT, 553 }; 554 555 #define SNDRV_RAWMIDI_INFO_OUTPUT 0x00000001 556 #define SNDRV_RAWMIDI_INFO_INPUT 0x00000002 557 #define SNDRV_RAWMIDI_INFO_DUPLEX 0x00000004 558 559 struct snd_rawmidi_info { 560 unsigned int device; /* RO/WR (control): device number */ 561 unsigned int subdevice; /* RO/WR (control): subdevice number */ 562 int stream; /* WR: stream */ 563 int card; /* R: card number */ 564 unsigned int flags; /* SNDRV_RAWMIDI_INFO_XXXX */ 565 unsigned char id[64]; /* ID (user selectable) */ 566 unsigned char name[80]; /* name of device */ 567 unsigned char subname[32]; /* name of active or selected subdevice */ 568 unsigned int subdevices_count; 569 unsigned int subdevices_avail; 570 unsigned char reserved[64]; /* reserved for future use */ 571 }; 572 573 struct snd_rawmidi_params { 574 int stream; 575 size_t buffer_size; /* queue size in bytes */ 576 size_t avail_min; /* minimum avail bytes for wakeup */ 577 unsigned int no_active_sensing: 1; /* do not send active sensing byte in close() */ 578 unsigned char reserved[16]; /* reserved for future use */ 579 }; 580 581 struct snd_rawmidi_status { 582 int stream; 583 struct timespec tstamp; /* Timestamp */ 584 size_t avail; /* available bytes */ 585 size_t xruns; /* count of overruns since last status (in bytes) */ 586 unsigned char reserved[16]; /* reserved for future use */ 587 }; 588 589 #define SNDRV_RAWMIDI_IOCTL_PVERSION _IOR('W', 0x00, int) 590 #define SNDRV_RAWMIDI_IOCTL_INFO _IOR('W', 0x01, struct snd_rawmidi_info) 591 #define SNDRV_RAWMIDI_IOCTL_PARAMS _IOWR('W', 0x10, struct snd_rawmidi_params) 592 #define SNDRV_RAWMIDI_IOCTL_STATUS _IOWR('W', 0x20, struct snd_rawmidi_status) 593 #define SNDRV_RAWMIDI_IOCTL_DROP _IOW('W', 0x30, int) 594 #define SNDRV_RAWMIDI_IOCTL_DRAIN _IOW('W', 0x31, int) 595 596 /* 597 * Timer section - /dev/snd/timer 598 */ 599 600 #define SNDRV_TIMER_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 6) 601 602 enum { 603 SNDRV_TIMER_CLASS_NONE = -1, 604 SNDRV_TIMER_CLASS_SLAVE = 0, 605 SNDRV_TIMER_CLASS_GLOBAL, 606 SNDRV_TIMER_CLASS_CARD, 607 SNDRV_TIMER_CLASS_PCM, 608 SNDRV_TIMER_CLASS_LAST = SNDRV_TIMER_CLASS_PCM, 609 }; 610 611 /* slave timer classes */ 612 enum { 613 SNDRV_TIMER_SCLASS_NONE = 0, 614 SNDRV_TIMER_SCLASS_APPLICATION, 615 SNDRV_TIMER_SCLASS_SEQUENCER, /* alias */ 616 SNDRV_TIMER_SCLASS_OSS_SEQUENCER, /* alias */ 617 SNDRV_TIMER_SCLASS_LAST = SNDRV_TIMER_SCLASS_OSS_SEQUENCER, 618 }; 619 620 /* global timers (device member) */ 621 #define SNDRV_TIMER_GLOBAL_SYSTEM 0 622 #define SNDRV_TIMER_GLOBAL_RTC 1 623 #define SNDRV_TIMER_GLOBAL_HPET 2 624 #define SNDRV_TIMER_GLOBAL_HRTIMER 3 625 626 /* info flags */ 627 #define SNDRV_TIMER_FLG_SLAVE (1<<0) /* cannot be controlled */ 628 629 struct snd_timer_id { 630 int dev_class; 631 int dev_sclass; 632 int card; 633 int device; 634 int subdevice; 635 }; 636 637 struct snd_timer_ginfo { 638 struct snd_timer_id tid; /* requested timer ID */ 639 unsigned int flags; /* timer flags - SNDRV_TIMER_FLG_* */ 640 int card; /* card number */ 641 unsigned char id[64]; /* timer identification */ 642 unsigned char name[80]; /* timer name */ 643 unsigned long reserved0; /* reserved for future use */ 644 unsigned long resolution; /* average period resolution in ns */ 645 unsigned long resolution_min; /* minimal period resolution in ns */ 646 unsigned long resolution_max; /* maximal period resolution in ns */ 647 unsigned int clients; /* active timer clients */ 648 unsigned char reserved[32]; 649 }; 650 651 struct snd_timer_gparams { 652 struct snd_timer_id tid; /* requested timer ID */ 653 unsigned long period_num; /* requested precise period duration (in seconds) - numerator */ 654 unsigned long period_den; /* requested precise period duration (in seconds) - denominator */ 655 unsigned char reserved[32]; 656 }; 657 658 struct snd_timer_gstatus { 659 struct snd_timer_id tid; /* requested timer ID */ 660 unsigned long resolution; /* current period resolution in ns */ 661 unsigned long resolution_num; /* precise current period resolution (in seconds) - numerator */ 662 unsigned long resolution_den; /* precise current period resolution (in seconds) - denominator */ 663 unsigned char reserved[32]; 664 }; 665 666 struct snd_timer_select { 667 struct snd_timer_id id; /* bind to timer ID */ 668 unsigned char reserved[32]; /* reserved */ 669 }; 670 671 struct snd_timer_info { 672 unsigned int flags; /* timer flags - SNDRV_TIMER_FLG_* */ 673 int card; /* card number */ 674 unsigned char id[64]; /* timer identificator */ 675 unsigned char name[80]; /* timer name */ 676 unsigned long reserved0; /* reserved for future use */ 677 unsigned long resolution; /* average period resolution in ns */ 678 unsigned char reserved[64]; /* reserved */ 679 }; 680 681 #define SNDRV_TIMER_PSFLG_AUTO (1<<0) /* auto start, otherwise one-shot */ 682 #define SNDRV_TIMER_PSFLG_EXCLUSIVE (1<<1) /* exclusive use, precise start/stop/pause/continue */ 683 #define SNDRV_TIMER_PSFLG_EARLY_EVENT (1<<2) /* write early event to the poll queue */ 684 685 struct snd_timer_params { 686 unsigned int flags; /* flags - SNDRV_MIXER_PSFLG_* */ 687 unsigned int ticks; /* requested resolution in ticks */ 688 unsigned int queue_size; /* total size of queue (32-1024) */ 689 unsigned int reserved0; /* reserved, was: failure locations */ 690 unsigned int filter; /* event filter (bitmask of SNDRV_TIMER_EVENT_*) */ 691 unsigned char reserved[60]; /* reserved */ 692 }; 693 694 struct snd_timer_status { 695 struct timespec tstamp; /* Timestamp - last update */ 696 unsigned int resolution; /* current period resolution in ns */ 697 unsigned int lost; /* counter of master tick lost */ 698 unsigned int overrun; /* count of read queue overruns */ 699 unsigned int queue; /* used queue size */ 700 unsigned char reserved[64]; /* reserved */ 701 }; 702 703 #define SNDRV_TIMER_IOCTL_PVERSION _IOR('T', 0x00, int) 704 #define SNDRV_TIMER_IOCTL_NEXT_DEVICE _IOWR('T', 0x01, struct snd_timer_id) 705 #define SNDRV_TIMER_IOCTL_TREAD _IOW('T', 0x02, int) 706 #define SNDRV_TIMER_IOCTL_GINFO _IOWR('T', 0x03, struct snd_timer_ginfo) 707 #define SNDRV_TIMER_IOCTL_GPARAMS _IOW('T', 0x04, struct snd_timer_gparams) 708 #define SNDRV_TIMER_IOCTL_GSTATUS _IOWR('T', 0x05, struct snd_timer_gstatus) 709 #define SNDRV_TIMER_IOCTL_SELECT _IOW('T', 0x10, struct snd_timer_select) 710 #define SNDRV_TIMER_IOCTL_INFO _IOR('T', 0x11, struct snd_timer_info) 711 #define SNDRV_TIMER_IOCTL_PARAMS _IOW('T', 0x12, struct snd_timer_params) 712 #define SNDRV_TIMER_IOCTL_STATUS _IOR('T', 0x14, struct snd_timer_status) 713 /* The following four ioctls are changed since 1.0.9 due to confliction */ 714 #define SNDRV_TIMER_IOCTL_START _IO('T', 0xa0) 715 #define SNDRV_TIMER_IOCTL_STOP _IO('T', 0xa1) 716 #define SNDRV_TIMER_IOCTL_CONTINUE _IO('T', 0xa2) 717 #define SNDRV_TIMER_IOCTL_PAUSE _IO('T', 0xa3) 718 719 struct snd_timer_read { 720 unsigned int resolution; 721 unsigned int ticks; 722 }; 723 724 enum { 725 SNDRV_TIMER_EVENT_RESOLUTION = 0, /* val = resolution in ns */ 726 SNDRV_TIMER_EVENT_TICK, /* val = ticks */ 727 SNDRV_TIMER_EVENT_START, /* val = resolution in ns */ 728 SNDRV_TIMER_EVENT_STOP, /* val = 0 */ 729 SNDRV_TIMER_EVENT_CONTINUE, /* val = resolution in ns */ 730 SNDRV_TIMER_EVENT_PAUSE, /* val = 0 */ 731 SNDRV_TIMER_EVENT_EARLY, /* val = 0, early event */ 732 SNDRV_TIMER_EVENT_SUSPEND, /* val = 0 */ 733 SNDRV_TIMER_EVENT_RESUME, /* val = resolution in ns */ 734 /* master timer events for slave timer instances */ 735 SNDRV_TIMER_EVENT_MSTART = SNDRV_TIMER_EVENT_START + 10, 736 SNDRV_TIMER_EVENT_MSTOP = SNDRV_TIMER_EVENT_STOP + 10, 737 SNDRV_TIMER_EVENT_MCONTINUE = SNDRV_TIMER_EVENT_CONTINUE + 10, 738 SNDRV_TIMER_EVENT_MPAUSE = SNDRV_TIMER_EVENT_PAUSE + 10, 739 SNDRV_TIMER_EVENT_MSUSPEND = SNDRV_TIMER_EVENT_SUSPEND + 10, 740 SNDRV_TIMER_EVENT_MRESUME = SNDRV_TIMER_EVENT_RESUME + 10, 741 }; 742 743 struct snd_timer_tread { 744 int event; 745 struct timespec tstamp; 746 unsigned int val; 747 }; 748 749 /**************************************************************************** 750 * * 751 * Section for driver control interface - /dev/snd/control? * 752 * * 753 ****************************************************************************/ 754 755 #define SNDRV_CTL_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 7) 756 757 struct snd_ctl_card_info { 758 int card; /* card number */ 759 int pad; /* reserved for future (was type) */ 760 unsigned char id[16]; /* ID of card (user selectable) */ 761 unsigned char driver[16]; /* Driver name */ 762 unsigned char name[32]; /* Short name of soundcard */ 763 unsigned char longname[80]; /* name + info text about soundcard */ 764 unsigned char reserved_[16]; /* reserved for future (was ID of mixer) */ 765 unsigned char mixername[80]; /* visual mixer identification */ 766 unsigned char components[128]; /* card components / fine identification, delimited with one space (AC97 etc..) */ 767 }; 768 769 typedef int __bitwise snd_ctl_elem_type_t; 770 #define SNDRV_CTL_ELEM_TYPE_NONE ((__force snd_ctl_elem_type_t) 0) /* invalid */ 771 #define SNDRV_CTL_ELEM_TYPE_BOOLEAN ((__force snd_ctl_elem_type_t) 1) /* boolean type */ 772 #define SNDRV_CTL_ELEM_TYPE_INTEGER ((__force snd_ctl_elem_type_t) 2) /* integer type */ 773 #define SNDRV_CTL_ELEM_TYPE_ENUMERATED ((__force snd_ctl_elem_type_t) 3) /* enumerated type */ 774 #define SNDRV_CTL_ELEM_TYPE_BYTES ((__force snd_ctl_elem_type_t) 4) /* byte array */ 775 #define SNDRV_CTL_ELEM_TYPE_IEC958 ((__force snd_ctl_elem_type_t) 5) /* IEC958 (S/PDIF) setup */ 776 #define SNDRV_CTL_ELEM_TYPE_INTEGER64 ((__force snd_ctl_elem_type_t) 6) /* 64-bit integer type */ 777 #define SNDRV_CTL_ELEM_TYPE_LAST SNDRV_CTL_ELEM_TYPE_INTEGER64 778 779 typedef int __bitwise snd_ctl_elem_iface_t; 780 #define SNDRV_CTL_ELEM_IFACE_CARD ((__force snd_ctl_elem_iface_t) 0) /* global control */ 781 #define SNDRV_CTL_ELEM_IFACE_HWDEP ((__force snd_ctl_elem_iface_t) 1) /* hardware dependent device */ 782 #define SNDRV_CTL_ELEM_IFACE_MIXER ((__force snd_ctl_elem_iface_t) 2) /* virtual mixer device */ 783 #define SNDRV_CTL_ELEM_IFACE_PCM ((__force snd_ctl_elem_iface_t) 3) /* PCM device */ 784 #define SNDRV_CTL_ELEM_IFACE_RAWMIDI ((__force snd_ctl_elem_iface_t) 4) /* RawMidi device */ 785 #define SNDRV_CTL_ELEM_IFACE_TIMER ((__force snd_ctl_elem_iface_t) 5) /* timer device */ 786 #define SNDRV_CTL_ELEM_IFACE_SEQUENCER ((__force snd_ctl_elem_iface_t) 6) /* sequencer client */ 787 #define SNDRV_CTL_ELEM_IFACE_LAST SNDRV_CTL_ELEM_IFACE_SEQUENCER 788 789 #define SNDRV_CTL_ELEM_ACCESS_READ (1<<0) 790 #define SNDRV_CTL_ELEM_ACCESS_WRITE (1<<1) 791 #define SNDRV_CTL_ELEM_ACCESS_READWRITE (SNDRV_CTL_ELEM_ACCESS_READ|SNDRV_CTL_ELEM_ACCESS_WRITE) 792 #define SNDRV_CTL_ELEM_ACCESS_VOLATILE (1<<2) /* control value may be changed without a notification */ 793 #define SNDRV_CTL_ELEM_ACCESS_TIMESTAMP (1<<3) /* when was control changed */ 794 #define SNDRV_CTL_ELEM_ACCESS_TLV_READ (1<<4) /* TLV read is possible */ 795 #define SNDRV_CTL_ELEM_ACCESS_TLV_WRITE (1<<5) /* TLV write is possible */ 796 #define SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE (SNDRV_CTL_ELEM_ACCESS_TLV_READ|SNDRV_CTL_ELEM_ACCESS_TLV_WRITE) 797 #define SNDRV_CTL_ELEM_ACCESS_TLV_COMMAND (1<<6) /* TLV command is possible */ 798 #define SNDRV_CTL_ELEM_ACCESS_INACTIVE (1<<8) /* control does actually nothing, but may be updated */ 799 #define SNDRV_CTL_ELEM_ACCESS_LOCK (1<<9) /* write lock */ 800 #define SNDRV_CTL_ELEM_ACCESS_OWNER (1<<10) /* write lock owner */ 801 #define SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK (1<<28) /* kernel use a TLV callback */ 802 #define SNDRV_CTL_ELEM_ACCESS_USER (1<<29) /* user space element */ 803 /* bits 30 and 31 are obsoleted (for indirect access) */ 804 805 /* for further details see the ACPI and PCI power management specification */ 806 #define SNDRV_CTL_POWER_D0 0x0000 /* full On */ 807 #define SNDRV_CTL_POWER_D1 0x0100 /* partial On */ 808 #define SNDRV_CTL_POWER_D2 0x0200 /* partial On */ 809 #define SNDRV_CTL_POWER_D3 0x0300 /* Off */ 810 #define SNDRV_CTL_POWER_D3hot (SNDRV_CTL_POWER_D3|0x0000) /* Off, with power */ 811 #define SNDRV_CTL_POWER_D3cold (SNDRV_CTL_POWER_D3|0x0001) /* Off, without power */ 812 813 struct snd_ctl_elem_id { 814 unsigned int numid; /* numeric identifier, zero = invalid */ 815 snd_ctl_elem_iface_t iface; /* interface identifier */ 816 unsigned int device; /* device/client number */ 817 unsigned int subdevice; /* subdevice (substream) number */ 818 unsigned char name[44]; /* ASCII name of item */ 819 unsigned int index; /* index of item */ 820 }; 821 822 struct snd_ctl_elem_list { 823 unsigned int offset; /* W: first element ID to get */ 824 unsigned int space; /* W: count of element IDs to get */ 825 unsigned int used; /* R: count of element IDs set */ 826 unsigned int count; /* R: count of all elements */ 827 struct snd_ctl_elem_id __user *pids; /* R: IDs */ 828 unsigned char reserved[50]; 829 }; 830 831 struct snd_ctl_elem_info { 832 struct snd_ctl_elem_id id; /* W: element ID */ 833 snd_ctl_elem_type_t type; /* R: value type - SNDRV_CTL_ELEM_TYPE_* */ 834 unsigned int access; /* R: value access (bitmask) - SNDRV_CTL_ELEM_ACCESS_* */ 835 unsigned int count; /* count of values */ 836 __kernel_pid_t owner; /* owner's PID of this control */ 837 union { 838 struct { 839 long min; /* R: minimum value */ 840 long max; /* R: maximum value */ 841 long step; /* R: step (0 variable) */ 842 } integer; 843 struct { 844 long long min; /* R: minimum value */ 845 long long max; /* R: maximum value */ 846 long long step; /* R: step (0 variable) */ 847 } integer64; 848 struct { 849 unsigned int items; /* R: number of items */ 850 unsigned int item; /* W: item number */ 851 char name[64]; /* R: value name */ 852 __u64 names_ptr; /* W: names list (ELEM_ADD only) */ 853 unsigned int names_length; 854 } enumerated; 855 unsigned char reserved[128]; 856 } value; 857 union { 858 unsigned short d[4]; /* dimensions */ 859 unsigned short *d_ptr; /* indirect - obsoleted */ 860 } dimen; 861 unsigned char reserved[64-4*sizeof(unsigned short)]; 862 }; 863 864 struct snd_ctl_elem_value { 865 struct snd_ctl_elem_id id; /* W: element ID */ 866 unsigned int indirect: 1; /* W: indirect access - obsoleted */ 867 union { 868 union { 869 long value[128]; 870 long *value_ptr; /* obsoleted */ 871 } integer; 872 union { 873 long long value[64]; 874 long long *value_ptr; /* obsoleted */ 875 } integer64; 876 union { 877 unsigned int item[128]; 878 unsigned int *item_ptr; /* obsoleted */ 879 } enumerated; 880 union { 881 unsigned char data[512]; 882 unsigned char *data_ptr; /* obsoleted */ 883 } bytes; 884 struct snd_aes_iec958 iec958; 885 } value; /* RO */ 886 struct timespec tstamp; 887 unsigned char reserved[128-sizeof(struct timespec)]; 888 }; 889 890 struct snd_ctl_tlv { 891 unsigned int numid; /* control element numeric identification */ 892 unsigned int length; /* in bytes aligned to 4 */ 893 unsigned int tlv[0]; /* first TLV */ 894 }; 895 896 #define SNDRV_CTL_IOCTL_PVERSION _IOR('U', 0x00, int) 897 #define SNDRV_CTL_IOCTL_CARD_INFO _IOR('U', 0x01, struct snd_ctl_card_info) 898 #define SNDRV_CTL_IOCTL_ELEM_LIST _IOWR('U', 0x10, struct snd_ctl_elem_list) 899 #define SNDRV_CTL_IOCTL_ELEM_INFO _IOWR('U', 0x11, struct snd_ctl_elem_info) 900 #define SNDRV_CTL_IOCTL_ELEM_READ _IOWR('U', 0x12, struct snd_ctl_elem_value) 901 #define SNDRV_CTL_IOCTL_ELEM_WRITE _IOWR('U', 0x13, struct snd_ctl_elem_value) 902 #define SNDRV_CTL_IOCTL_ELEM_LOCK _IOW('U', 0x14, struct snd_ctl_elem_id) 903 #define SNDRV_CTL_IOCTL_ELEM_UNLOCK _IOW('U', 0x15, struct snd_ctl_elem_id) 904 #define SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS _IOWR('U', 0x16, int) 905 #define SNDRV_CTL_IOCTL_ELEM_ADD _IOWR('U', 0x17, struct snd_ctl_elem_info) 906 #define SNDRV_CTL_IOCTL_ELEM_REPLACE _IOWR('U', 0x18, struct snd_ctl_elem_info) 907 #define SNDRV_CTL_IOCTL_ELEM_REMOVE _IOWR('U', 0x19, struct snd_ctl_elem_id) 908 #define SNDRV_CTL_IOCTL_TLV_READ _IOWR('U', 0x1a, struct snd_ctl_tlv) 909 #define SNDRV_CTL_IOCTL_TLV_WRITE _IOWR('U', 0x1b, struct snd_ctl_tlv) 910 #define SNDRV_CTL_IOCTL_TLV_COMMAND _IOWR('U', 0x1c, struct snd_ctl_tlv) 911 #define SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE _IOWR('U', 0x20, int) 912 #define SNDRV_CTL_IOCTL_HWDEP_INFO _IOR('U', 0x21, struct snd_hwdep_info) 913 #define SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE _IOR('U', 0x30, int) 914 #define SNDRV_CTL_IOCTL_PCM_INFO _IOWR('U', 0x31, struct snd_pcm_info) 915 #define SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE _IOW('U', 0x32, int) 916 #define SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE _IOWR('U', 0x40, int) 917 #define SNDRV_CTL_IOCTL_RAWMIDI_INFO _IOWR('U', 0x41, struct snd_rawmidi_info) 918 #define SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE _IOW('U', 0x42, int) 919 #define SNDRV_CTL_IOCTL_POWER _IOWR('U', 0xd0, int) 920 #define SNDRV_CTL_IOCTL_POWER_STATE _IOR('U', 0xd1, int) 921 922 /* 923 * Read interface. 924 */ 925 926 enum sndrv_ctl_event_type { 927 SNDRV_CTL_EVENT_ELEM = 0, 928 SNDRV_CTL_EVENT_LAST = SNDRV_CTL_EVENT_ELEM, 929 }; 930 931 #define SNDRV_CTL_EVENT_MASK_VALUE (1<<0) /* element value was changed */ 932 #define SNDRV_CTL_EVENT_MASK_INFO (1<<1) /* element info was changed */ 933 #define SNDRV_CTL_EVENT_MASK_ADD (1<<2) /* element was added */ 934 #define SNDRV_CTL_EVENT_MASK_TLV (1<<3) /* element TLV tree was changed */ 935 #define SNDRV_CTL_EVENT_MASK_REMOVE (~0U) /* element was removed */ 936 937 struct snd_ctl_event { 938 int type; /* event type - SNDRV_CTL_EVENT_* */ 939 union { 940 struct { 941 unsigned int mask; 942 struct snd_ctl_elem_id id; 943 } elem; 944 unsigned char data8[60]; 945 } data; 946 }; 947 948 /* 949 * Control names 950 */ 951 952 #define SNDRV_CTL_NAME_NONE "" 953 #define SNDRV_CTL_NAME_PLAYBACK "Playback " 954 #define SNDRV_CTL_NAME_CAPTURE "Capture " 955 956 #define SNDRV_CTL_NAME_IEC958_NONE "" 957 #define SNDRV_CTL_NAME_IEC958_SWITCH "Switch" 958 #define SNDRV_CTL_NAME_IEC958_VOLUME "Volume" 959 #define SNDRV_CTL_NAME_IEC958_DEFAULT "Default" 960 #define SNDRV_CTL_NAME_IEC958_MASK "Mask" 961 #define SNDRV_CTL_NAME_IEC958_CON_MASK "Con Mask" 962 #define SNDRV_CTL_NAME_IEC958_PRO_MASK "Pro Mask" 963 #define SNDRV_CTL_NAME_IEC958_PCM_STREAM "PCM Stream" 964 #define SNDRV_CTL_NAME_IEC958(expl,direction,what) "IEC958 " expl SNDRV_CTL_NAME_##direction SNDRV_CTL_NAME_IEC958_##what 965 966 #endif /* __SOUND_ASOUND_H */ 967