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>
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.
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.
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
23 #ifndef __SOUND_ASOUND_H
24 #define __SOUND_ASOUND_H
26 #if defined(LINUX) || defined(__LINUX__) || defined(__linux__)
28 #include <linux/ioctl.h>
29 #include <linux/types.h>
33 #include <linux/time.h>
34 #include <asm/byteorder.h>
36 #if __LITTLE_ENDIAN == 1234
37 #define SNDRV_LITTLE_ENDIAN
38 #elif __BIG_ENDIAN == 4321
39 #define SNDRV_BIG_ENDIAN
41 #error "Unsupported endian..."
44 #else /* !__KERNEL__ */
47 #if __BYTE_ORDER == __LITTLE_ENDIAN
48 #define SNDRV_LITTLE_ENDIAN
49 #elif __BYTE_ORDER == __BIG_ENDIAN
50 #define SNDRV_BIG_ENDIAN
52 #error "Unsupported endian..."
55 #endif /* __KERNEL **/
61 #include <sys/types.h>
62 #include <sys/ioctl.h>
69 #define SNDRV_PROTOCOL_VERSION(major, minor, subminor) (((major)<<16)|((minor)<<8)|(subminor))
70 #define SNDRV_PROTOCOL_MAJOR(version) (((version)>>16)&0xffff)
71 #define SNDRV_PROTOCOL_MINOR(version) (((version)>>8)&0xff)
72 #define SNDRV_PROTOCOL_MICRO(version) ((version)&0xff)
73 #define SNDRV_PROTOCOL_INCOMPATIBLE(kversion, uversion) \
74 (SNDRV_PROTOCOL_MAJOR(kversion) != SNDRV_PROTOCOL_MAJOR(uversion) || \
75 (SNDRV_PROTOCOL_MAJOR(kversion) == SNDRV_PROTOCOL_MAJOR(uversion) && \
76 SNDRV_PROTOCOL_MINOR(kversion) != SNDRV_PROTOCOL_MINOR(uversion)))
78 /****************************************************************************
80 * Digital audio interface *
82 ****************************************************************************/
84 struct sndrv_aes_iec958 {
85 unsigned char status[24]; /* AES/IEC958 channel status bits */
86 unsigned char subcode[147]; /* AES/IEC958 subcode bits */
87 unsigned char pad; /* nothing */
88 unsigned char dig_subframe[4]; /* AES/IEC958 subframe bits */
91 /****************************************************************************
93 * Section for driver hardware dependent interface - /dev/snd/hw? *
95 ****************************************************************************/
97 #define SNDRV_HWDEP_VERSION SNDRV_PROTOCOL_VERSION(1, 0, 1)
99 enum sndrv_hwdep_iface {
100 SNDRV_HWDEP_IFACE_OPL2 = 0,
101 SNDRV_HWDEP_IFACE_OPL3,
102 SNDRV_HWDEP_IFACE_OPL4,
103 SNDRV_HWDEP_IFACE_SB16CSP, /* Creative Signal Processor */
104 SNDRV_HWDEP_IFACE_EMU10K1, /* FX8010 processor in EMU10K1 chip */
105 SNDRV_HWDEP_IFACE_YSS225, /* Yamaha FX processor */
106 SNDRV_HWDEP_IFACE_ICS2115, /* Wavetable synth */
107 SNDRV_HWDEP_IFACE_SSCAPE, /* Ensoniq SoundScape ISA card (MC68EC000) */
108 SNDRV_HWDEP_IFACE_VX, /* Digigram VX cards */
109 SNDRV_HWDEP_IFACE_MIXART, /* Digigram miXart cards */
110 SNDRV_HWDEP_IFACE_USX2Y, /* Tascam US122, US224 & US428 usb */
111 SNDRV_HWDEP_IFACE_EMUX_WAVETABLE, /* EmuX wavetable */
112 SNDRV_HWDEP_IFACE_BLUETOOTH, /* Bluetooth audio */
113 SNDRV_HWDEP_IFACE_USX2Y_PCM, /* Tascam US122, US224 & US428 rawusb pcm */
114 SNDRV_HWDEP_IFACE_PCXHR, /* Digigram PCXHR */
115 SNDRV_HWDEP_IFACE_SB_RC, /* SB Extigy/Audigy2NX remote control */
116 SNDRV_HWDEP_IFACE_HDA, /* HD-audio */
117 SNDRV_HWDEP_IFACE_USB_STREAM, /* direct access to usb stream */
119 /* Don't forget to change the following: */
120 SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_USB_STREAM
123 struct sndrv_hwdep_info {
124 unsigned int device; /* WR: device number */
125 int card; /* R: card number */
126 unsigned char id[64]; /* ID (user selectable) */
127 unsigned char name[80]; /* hwdep name */
128 int iface; /* hwdep interface */
129 unsigned char reserved[64]; /* reserved for future */
132 /* generic DSP loader */
133 struct sndrv_hwdep_dsp_status {
134 unsigned int version; /* R: driver-specific version */
135 unsigned char id[32]; /* R: driver-specific ID string */
136 unsigned int num_dsps; /* R: number of DSP images to transfer */
137 unsigned int dsp_loaded; /* R: bit flags indicating the loaded DSPs */
138 unsigned int chip_ready; /* R: 1 = initialization finished */
139 unsigned char reserved[16]; /* reserved for future use */
142 struct sndrv_hwdep_dsp_image {
143 unsigned int index; /* W: DSP index */
144 unsigned char name[64]; /* W: ID (e.g. file name) */
145 unsigned char *image; /* W: binary image */
146 size_t length; /* W: size of image in bytes */
147 unsigned long driver_data; /* W: driver-specific data */
151 SNDRV_HWDEP_IOCTL_PVERSION = _IOR ('H', 0x00, int),
152 SNDRV_HWDEP_IOCTL_INFO = _IOR ('H', 0x01, struct sndrv_hwdep_info),
153 SNDRV_HWDEP_IOCTL_DSP_STATUS = _IOR('H', 0x02, struct sndrv_hwdep_dsp_status),
154 SNDRV_HWDEP_IOCTL_DSP_LOAD = _IOW('H', 0x03, struct sndrv_hwdep_dsp_image)
157 /*****************************************************************************
159 * Digital Audio (PCM) interface - /dev/snd/pcm?? *
161 *****************************************************************************/
163 #define SNDRV_PCM_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 10)
165 typedef unsigned long sndrv_pcm_uframes_t;
166 typedef long sndrv_pcm_sframes_t;
168 enum sndrv_pcm_class {
169 SNDRV_PCM_CLASS_GENERIC = 0, /* standard mono or stereo device */
170 SNDRV_PCM_CLASS_MULTI, /* multichannel device */
171 SNDRV_PCM_CLASS_MODEM, /* software modem class */
172 SNDRV_PCM_CLASS_DIGITIZER, /* digitizer class */
173 /* Don't forget to change the following: */
174 SNDRV_PCM_CLASS_LAST = SNDRV_PCM_CLASS_DIGITIZER,
177 enum sndrv_pcm_subclass {
178 SNDRV_PCM_SUBCLASS_GENERIC_MIX = 0, /* mono or stereo subdevices are mixed together */
179 SNDRV_PCM_SUBCLASS_MULTI_MIX, /* multichannel subdevices are mixed together */
180 /* Don't forget to change the following: */
181 SNDRV_PCM_SUBCLASS_LAST = SNDRV_PCM_SUBCLASS_MULTI_MIX,
184 enum sndrv_pcm_stream {
185 SNDRV_PCM_STREAM_PLAYBACK = 0,
186 SNDRV_PCM_STREAM_CAPTURE,
187 SNDRV_PCM_STREAM_LAST = SNDRV_PCM_STREAM_CAPTURE,
190 enum sndrv_pcm_access {
191 SNDRV_PCM_ACCESS_MMAP_INTERLEAVED = 0, /* interleaved mmap */
192 SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED, /* noninterleaved mmap */
193 SNDRV_PCM_ACCESS_MMAP_COMPLEX, /* complex mmap */
194 SNDRV_PCM_ACCESS_RW_INTERLEAVED, /* readi/writei */
195 SNDRV_PCM_ACCESS_RW_NONINTERLEAVED, /* readn/writen */
196 SNDRV_PCM_ACCESS_LAST = SNDRV_PCM_ACCESS_RW_NONINTERLEAVED,
199 enum sndrv_pcm_format {
200 SNDRV_PCM_FORMAT_S8 = 0,
202 SNDRV_PCM_FORMAT_S16_LE,
203 SNDRV_PCM_FORMAT_S16_BE,
204 SNDRV_PCM_FORMAT_U16_LE,
205 SNDRV_PCM_FORMAT_U16_BE,
206 SNDRV_PCM_FORMAT_S24_LE, /* low three bytes */
207 SNDRV_PCM_FORMAT_S24_BE, /* low three bytes */
208 SNDRV_PCM_FORMAT_U24_LE, /* low three bytes */
209 SNDRV_PCM_FORMAT_U24_BE, /* low three bytes */
210 SNDRV_PCM_FORMAT_S32_LE,
211 SNDRV_PCM_FORMAT_S32_BE,
212 SNDRV_PCM_FORMAT_U32_LE,
213 SNDRV_PCM_FORMAT_U32_BE,
214 SNDRV_PCM_FORMAT_FLOAT_LE, /* 4-byte float, IEEE-754 32-bit, range -1.0 to 1.0 */
215 SNDRV_PCM_FORMAT_FLOAT_BE, /* 4-byte float, IEEE-754 32-bit, range -1.0 to 1.0 */
216 SNDRV_PCM_FORMAT_FLOAT64_LE, /* 8-byte float, IEEE-754 64-bit, range -1.0 to 1.0 */
217 SNDRV_PCM_FORMAT_FLOAT64_BE, /* 8-byte float, IEEE-754 64-bit, range -1.0 to 1.0 */
218 SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE, /* IEC-958 subframe, Little Endian */
219 SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE, /* IEC-958 subframe, Big Endian */
220 SNDRV_PCM_FORMAT_MU_LAW,
221 SNDRV_PCM_FORMAT_A_LAW,
222 SNDRV_PCM_FORMAT_IMA_ADPCM,
223 SNDRV_PCM_FORMAT_MPEG,
224 SNDRV_PCM_FORMAT_GSM,
225 SNDRV_PCM_FORMAT_SPECIAL = 31,
226 SNDRV_PCM_FORMAT_S24_3LE = 32, /* in three bytes */
227 SNDRV_PCM_FORMAT_S24_3BE, /* in three bytes */
228 SNDRV_PCM_FORMAT_U24_3LE, /* in three bytes */
229 SNDRV_PCM_FORMAT_U24_3BE, /* in three bytes */
230 SNDRV_PCM_FORMAT_S20_3LE, /* in three bytes */
231 SNDRV_PCM_FORMAT_S20_3BE, /* in three bytes */
232 SNDRV_PCM_FORMAT_U20_3LE, /* in three bytes */
233 SNDRV_PCM_FORMAT_U20_3BE, /* in three bytes */
234 SNDRV_PCM_FORMAT_S18_3LE, /* in three bytes */
235 SNDRV_PCM_FORMAT_S18_3BE, /* in three bytes */
236 SNDRV_PCM_FORMAT_U18_3LE, /* in three bytes */
237 SNDRV_PCM_FORMAT_U18_3BE, /* in three bytes */
238 SNDRV_PCM_FORMAT_G723_24, /* 8 samples in 3 bytes */
239 SNDRV_PCM_FORMAT_G723_24_1B, /* 1 sample in 1 byte */
240 SNDRV_PCM_FORMAT_G723_40, /* 8 Samples in 5 bytes */
241 SNDRV_PCM_FORMAT_G723_40_1B, /* 1 sample in 1 byte */
242 SNDRV_PCM_FORMAT_LAST = SNDRV_PCM_FORMAT_G723_40_1B,
244 #ifdef SNDRV_LITTLE_ENDIAN
245 SNDRV_PCM_FORMAT_S16 = SNDRV_PCM_FORMAT_S16_LE,
246 SNDRV_PCM_FORMAT_U16 = SNDRV_PCM_FORMAT_U16_LE,
247 SNDRV_PCM_FORMAT_S24 = SNDRV_PCM_FORMAT_S24_LE,
248 SNDRV_PCM_FORMAT_U24 = SNDRV_PCM_FORMAT_U24_LE,
249 SNDRV_PCM_FORMAT_S32 = SNDRV_PCM_FORMAT_S32_LE,
250 SNDRV_PCM_FORMAT_U32 = SNDRV_PCM_FORMAT_U32_LE,
251 SNDRV_PCM_FORMAT_FLOAT = SNDRV_PCM_FORMAT_FLOAT_LE,
252 SNDRV_PCM_FORMAT_FLOAT64 = SNDRV_PCM_FORMAT_FLOAT64_LE,
253 SNDRV_PCM_FORMAT_IEC958_SUBFRAME = SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE,
255 #ifdef SNDRV_BIG_ENDIAN
256 SNDRV_PCM_FORMAT_S16 = SNDRV_PCM_FORMAT_S16_BE,
257 SNDRV_PCM_FORMAT_U16 = SNDRV_PCM_FORMAT_U16_BE,
258 SNDRV_PCM_FORMAT_S24 = SNDRV_PCM_FORMAT_S24_BE,
259 SNDRV_PCM_FORMAT_U24 = SNDRV_PCM_FORMAT_U24_BE,
260 SNDRV_PCM_FORMAT_S32 = SNDRV_PCM_FORMAT_S32_BE,
261 SNDRV_PCM_FORMAT_U32 = SNDRV_PCM_FORMAT_U32_BE,
262 SNDRV_PCM_FORMAT_FLOAT = SNDRV_PCM_FORMAT_FLOAT_BE,
263 SNDRV_PCM_FORMAT_FLOAT64 = SNDRV_PCM_FORMAT_FLOAT64_BE,
264 SNDRV_PCM_FORMAT_IEC958_SUBFRAME = SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE,
268 enum sndrv_pcm_subformat {
269 SNDRV_PCM_SUBFORMAT_STD = 0,
270 SNDRV_PCM_SUBFORMAT_LAST = SNDRV_PCM_SUBFORMAT_STD,
273 #define SNDRV_PCM_INFO_MMAP 0x00000001 /* hardware supports mmap */
274 #define SNDRV_PCM_INFO_MMAP_VALID 0x00000002 /* period data are valid during transfer */
275 #define SNDRV_PCM_INFO_DOUBLE 0x00000004 /* Double buffering needed for PCM start/stop */
276 #define SNDRV_PCM_INFO_BATCH 0x00000010 /* double buffering */
277 #define SNDRV_PCM_INFO_INTERLEAVED 0x00000100 /* channels are interleaved */
278 #define SNDRV_PCM_INFO_NONINTERLEAVED 0x00000200 /* channels are not interleaved */
279 #define SNDRV_PCM_INFO_COMPLEX 0x00000400 /* complex frame organization (mmap only) */
280 #define SNDRV_PCM_INFO_BLOCK_TRANSFER 0x00010000 /* hardware transfer block of samples */
281 #define SNDRV_PCM_INFO_OVERRANGE 0x00020000 /* hardware supports ADC (capture) overrange detection */
282 #define SNDRV_PCM_INFO_RESUME 0x00040000 /* hardware supports stream resume after suspend */
283 #define SNDRV_PCM_INFO_PAUSE 0x00080000 /* pause ioctl is supported */
284 #define SNDRV_PCM_INFO_HALF_DUPLEX 0x00100000 /* only half duplex */
285 #define SNDRV_PCM_INFO_JOINT_DUPLEX 0x00200000 /* playback and capture stream are somewhat correlated */
286 #define SNDRV_PCM_INFO_SYNC_START 0x00400000 /* pcm support some kind of sync go */
287 #define SNDRV_PCM_INFO_NO_PERIOD_WAKEUP 0x00800000 /* period wakeup can be disabled */
289 enum sndrv_pcm_state {
290 SNDRV_PCM_STATE_OPEN = 0, /* stream is open */
291 SNDRV_PCM_STATE_SETUP, /* stream has a setup */
292 SNDRV_PCM_STATE_PREPARED, /* stream is ready to start */
293 SNDRV_PCM_STATE_RUNNING, /* stream is running */
294 SNDRV_PCM_STATE_XRUN, /* stream reached an xrun */
295 SNDRV_PCM_STATE_DRAINING, /* stream is draining */
296 SNDRV_PCM_STATE_PAUSED, /* stream is paused */
297 SNDRV_PCM_STATE_SUSPENDED, /* hardware is suspended */
298 SNDRV_PCM_STATE_DISCONNECTED, /* hardware is disconnected */
299 SNDRV_PCM_STATE_LAST = SNDRV_PCM_STATE_DISCONNECTED,
303 SNDRV_PCM_MMAP_OFFSET_DATA = 0x00000000,
304 SNDRV_PCM_MMAP_OFFSET_STATUS = 0x80000000,
305 SNDRV_PCM_MMAP_OFFSET_CONTROL = 0x81000000,
308 union sndrv_pcm_sync_id {
309 unsigned char id[16];
310 unsigned short id16[8];
311 unsigned int id32[4];
314 struct sndrv_pcm_info {
315 unsigned int device; /* RO/WR (control): device number */
316 unsigned int subdevice; /* RO/WR (control): subdevice number */
317 int stream; /* RO/WR (control): stream direction */
318 int card; /* R: card number */
319 unsigned char id[64]; /* ID (user selectable) */
320 unsigned char name[80]; /* name of this device */
321 unsigned char subname[32]; /* subdevice name */
322 int dev_class; /* SNDRV_PCM_CLASS_* */
323 int dev_subclass; /* SNDRV_PCM_SUBCLASS_* */
324 unsigned int subdevices_count;
325 unsigned int subdevices_avail;
326 union sndrv_pcm_sync_id sync; /* hardware synchronization ID */
327 unsigned char reserved[64]; /* reserved for future... */
330 enum sndrv_pcm_hw_param {
331 SNDRV_PCM_HW_PARAM_ACCESS = 0, /* Access type */
332 SNDRV_PCM_HW_PARAM_FIRST_MASK = SNDRV_PCM_HW_PARAM_ACCESS,
333 SNDRV_PCM_HW_PARAM_FORMAT, /* Format */
334 SNDRV_PCM_HW_PARAM_SUBFORMAT, /* Subformat */
335 SNDRV_PCM_HW_PARAM_LAST_MASK = SNDRV_PCM_HW_PARAM_SUBFORMAT,
337 SNDRV_PCM_HW_PARAM_SAMPLE_BITS = 8, /* Bits per sample */
338 SNDRV_PCM_HW_PARAM_FIRST_INTERVAL = SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
339 SNDRV_PCM_HW_PARAM_FRAME_BITS, /* Bits per frame */
340 SNDRV_PCM_HW_PARAM_CHANNELS, /* Channels */
341 SNDRV_PCM_HW_PARAM_RATE, /* Approx rate */
342 SNDRV_PCM_HW_PARAM_PERIOD_TIME, /* Approx distance between interrupts
344 SNDRV_PCM_HW_PARAM_PERIOD_SIZE, /* Approx frames between interrupts */
345 SNDRV_PCM_HW_PARAM_PERIOD_BYTES, /* Approx bytes between interrupts */
346 SNDRV_PCM_HW_PARAM_PERIODS, /* Approx interrupts per buffer */
347 SNDRV_PCM_HW_PARAM_BUFFER_TIME, /* Approx duration of buffer in us */
348 SNDRV_PCM_HW_PARAM_BUFFER_SIZE, /* Size of buffer in frames */
349 SNDRV_PCM_HW_PARAM_BUFFER_BYTES, /* Size of buffer in bytes */
350 SNDRV_PCM_HW_PARAM_TICK_TIME, /* Approx tick duration in us */
351 SNDRV_PCM_HW_PARAM_LAST_INTERVAL = SNDRV_PCM_HW_PARAM_TICK_TIME
354 #define SNDRV_PCM_HW_PARAMS_NORESAMPLE (1<<0) /* avoid rate resampling */
355 #define SNDRV_PCM_HW_PARAMS_EXPORT_BUFFER (1<<1) /* export buffer */
356 #define SNDRV_PCM_HW_PARAMS_NO_PERIOD_WAKEUP (1<<2) /* disable period wakeups */
358 struct sndrv_interval {
359 unsigned int min, max;
360 unsigned int openmin:1,
366 #define SNDRV_MASK_MAX 256
369 u_int32_t bits[(SNDRV_MASK_MAX+31)/32];
372 struct sndrv_pcm_hw_params {
374 struct sndrv_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK -
375 SNDRV_PCM_HW_PARAM_FIRST_MASK + 1];
376 struct sndrv_mask mres[5]; /* reserved masks */
377 struct sndrv_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL -
378 SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];
379 struct sndrv_interval ires[9]; /* reserved intervals */
380 unsigned int rmask; /* W: requested masks */
381 unsigned int cmask; /* R: changed masks */
382 unsigned int info; /* R: Info flags for returned setup */
383 unsigned int msbits; /* R: used most significant bits */
384 unsigned int rate_num; /* R: rate numerator */
385 unsigned int rate_den; /* R: rate denominator */
386 sndrv_pcm_uframes_t fifo_size; /* R: chip FIFO size in frames */
387 unsigned char reserved[64]; /* reserved for future */
390 enum sndrv_pcm_tstamp {
391 SNDRV_PCM_TSTAMP_NONE = 0,
392 SNDRV_PCM_TSTAMP_ENABLE,
393 SNDRV_PCM_TSTAMP_LAST = SNDRV_PCM_TSTAMP_ENABLE,
396 struct sndrv_pcm_sw_params {
397 int tstamp_mode; /* timestamp mode */
398 unsigned int period_step;
399 unsigned int sleep_min; /* min ticks to sleep */
400 sndrv_pcm_uframes_t avail_min; /* min avail frames for wakeup */
401 sndrv_pcm_uframes_t xfer_align; /* xfer size need to be a multiple */
402 sndrv_pcm_uframes_t start_threshold; /* min hw_avail frames for automatic start */
403 sndrv_pcm_uframes_t stop_threshold; /* min avail frames for automatic stop */
404 sndrv_pcm_uframes_t silence_threshold; /* min distance from noise for silence filling */
405 sndrv_pcm_uframes_t silence_size; /* silence block size */
406 sndrv_pcm_uframes_t boundary; /* pointers wrap point */
407 unsigned char reserved[60]; /* reserved for future */
408 unsigned int period_event; /* for alsa-lib implementation */
411 struct sndrv_pcm_channel_info {
412 unsigned int channel;
413 long offset; /* mmap offset */
414 unsigned int first; /* offset to first sample in bits */
415 unsigned int step; /* samples distance in bits */
418 struct sndrv_pcm_status {
419 int state; /* stream state */
420 struct timespec trigger_tstamp; /* time when stream was started/stopped/paused */
421 struct timespec tstamp; /* reference timestamp */
422 sndrv_pcm_uframes_t appl_ptr; /* appl ptr */
423 sndrv_pcm_uframes_t hw_ptr; /* hw ptr */
424 sndrv_pcm_sframes_t delay; /* current delay in frames */
425 sndrv_pcm_uframes_t avail; /* number of frames available */
426 sndrv_pcm_uframes_t avail_max; /* max frames available on hw since last status */
427 sndrv_pcm_uframes_t overrange; /* count of ADC (capture) overrange detections from last status */
428 int suspended_state; /* suspended stream state */
429 unsigned char reserved[60]; /* must be filled with zero */
432 struct sndrv_pcm_mmap_status {
433 int state; /* RO: state - SNDRV_PCM_STATE_XXXX */
434 int pad1; /* Needed for 64 bit alignment */
435 sndrv_pcm_uframes_t hw_ptr; /* RO: hw ptr (0...boundary-1) */
436 struct timespec tstamp; /* Timestamp */
437 int suspended_state; /* RO: suspended stream state */
440 struct sndrv_pcm_mmap_control {
441 sndrv_pcm_uframes_t appl_ptr; /* RW: appl ptr (0...boundary-1) */
442 sndrv_pcm_uframes_t avail_min; /* RW: min available frames for wakeup */
445 #define SNDRV_PCM_SYNC_PTR_HWSYNC (1<<0) /* execute hwsync */
446 #define SNDRV_PCM_SYNC_PTR_APPL (1<<1) /* get appl_ptr from driver (r/w op) */
447 #define SNDRV_PCM_SYNC_PTR_AVAIL_MIN (1<<2) /* get avail_min from driver */
449 struct sndrv_pcm_sync_ptr {
452 struct sndrv_pcm_mmap_status status;
453 unsigned char reserved[64];
456 struct sndrv_pcm_mmap_control control;
457 unsigned char reserved[64];
462 sndrv_pcm_sframes_t result;
464 sndrv_pcm_uframes_t frames;
468 sndrv_pcm_sframes_t result;
470 sndrv_pcm_uframes_t frames;
475 SNDRV_PCM_TSTAMP_TYPE_GETTIMEOFDAY = 0, /* gettimeofday equivalent */
476 SNDRV_PCM_TSTAMP_TYPE_MONOTONIC, /* posix_clock_monotonic equivalent */
477 SNDRV_PCM_TSTAMP_TYPE_LAST = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC,
480 /* channel positions */
482 SNDRV_CHMAP_UNKNOWN = 0,
483 SNDRV_CHMAP_FL, /* front left */
484 SNDRV_CHMAP_FC, /* front center */
485 SNDRV_CHMAP_FR, /* front right */
486 SNDRV_CHMAP_FLC, /* front left center */
487 SNDRV_CHMAP_FRC, /* front right center */
488 SNDRV_CHMAP_RL, /* rear left */
489 SNDRV_CHMAP_RC, /* rear center */
490 SNDRV_CHMAP_RR, /* rear right */
491 SNDRV_CHMAP_RLC, /* rear left center */
492 SNDRV_CHMAP_RRC, /* rear right center */
493 SNDRV_CHMAP_SL, /* side left */
494 SNDRV_CHMAP_SR, /* side right */
495 SNDRV_CHMAP_LFE, /* LFE */
496 SNDRV_CHMAP_FLW, /* front left wide */
497 SNDRV_CHMAP_FRW, /* front right wide */
498 SNDRV_CHMAP_FLH, /* front left high */
499 SNDRV_CHMAP_FCH, /* front center high */
500 SNDRV_CHMAP_FRH, /* front right high */
501 SNDRV_CHMAP_TC, /* top center */
502 SNDRV_CHMAP_LAST = SNDRV_CHMAP_TC,
506 SNDRV_PCM_IOCTL_PVERSION = _IOR('A', 0x00, int),
507 SNDRV_PCM_IOCTL_INFO = _IOR('A', 0x01, struct sndrv_pcm_info),
508 SNDRV_PCM_IOCTL_TSTAMP = _IOW('A', 0x02, int),
509 SNDRV_PCM_IOCTL_TTSTAMP = _IOW('A', 0x03, int),
510 SNDRV_PCM_IOCTL_HW_REFINE = _IOWR('A', 0x10, struct sndrv_pcm_hw_params),
511 SNDRV_PCM_IOCTL_HW_PARAMS = _IOWR('A', 0x11, struct sndrv_pcm_hw_params),
512 SNDRV_PCM_IOCTL_HW_FREE = _IO('A', 0x12),
513 SNDRV_PCM_IOCTL_SW_PARAMS = _IOWR('A', 0x13, struct sndrv_pcm_sw_params),
514 SNDRV_PCM_IOCTL_STATUS = _IOR('A', 0x20, struct sndrv_pcm_status),
515 SNDRV_PCM_IOCTL_DELAY = _IOR('A', 0x21, sndrv_pcm_sframes_t),
516 SNDRV_PCM_IOCTL_HWSYNC = _IO('A', 0x22),
517 SNDRV_PCM_IOCTL_SYNC_PTR = _IOWR('A', 0x23, struct sndrv_pcm_sync_ptr),
518 SNDRV_PCM_IOCTL_CHANNEL_INFO = _IOR('A', 0x32, struct sndrv_pcm_channel_info),
519 SNDRV_PCM_IOCTL_PREPARE = _IO('A', 0x40),
520 SNDRV_PCM_IOCTL_RESET = _IO('A', 0x41),
521 SNDRV_PCM_IOCTL_START = _IO('A', 0x42),
522 SNDRV_PCM_IOCTL_DROP = _IO('A', 0x43),
523 SNDRV_PCM_IOCTL_DRAIN = _IO('A', 0x44),
524 SNDRV_PCM_IOCTL_PAUSE = _IOW('A', 0x45, int),
525 SNDRV_PCM_IOCTL_REWIND = _IOW('A', 0x46, sndrv_pcm_uframes_t),
526 SNDRV_PCM_IOCTL_RESUME = _IO('A', 0x47),
527 SNDRV_PCM_IOCTL_XRUN = _IO('A', 0x48),
528 SNDRV_PCM_IOCTL_FORWARD = _IOW('A', 0x49, sndrv_pcm_uframes_t),
529 SNDRV_PCM_IOCTL_WRITEI_FRAMES = _IOW('A', 0x50, struct sndrv_xferi),
530 SNDRV_PCM_IOCTL_READI_FRAMES = _IOR('A', 0x51, struct sndrv_xferi),
531 SNDRV_PCM_IOCTL_WRITEN_FRAMES = _IOW('A', 0x52, struct sndrv_xfern),
532 SNDRV_PCM_IOCTL_READN_FRAMES = _IOR('A', 0x53, struct sndrv_xfern),
533 SNDRV_PCM_IOCTL_LINK = _IOW('A', 0x60, int),
534 SNDRV_PCM_IOCTL_UNLINK = _IO('A', 0x61),
537 /* Trick to make alsa-lib/acinclude.m4 happy */
538 #define SNDRV_PCM_IOCTL_REWIND SNDRV_PCM_IOCTL_REWIND
540 /*****************************************************************************
542 * MIDI v1.0 interface *
544 *****************************************************************************/
547 * Raw MIDI section - /dev/snd/midi??
550 #define SNDRV_RAWMIDI_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 0)
552 enum sndrv_rawmidi_stream {
553 SNDRV_RAWMIDI_STREAM_OUTPUT = 0,
554 SNDRV_RAWMIDI_STREAM_INPUT,
555 SNDRV_RAWMIDI_STREAM_LAST = SNDRV_RAWMIDI_STREAM_INPUT,
558 #define SNDRV_RAWMIDI_INFO_OUTPUT 0x00000001
559 #define SNDRV_RAWMIDI_INFO_INPUT 0x00000002
560 #define SNDRV_RAWMIDI_INFO_DUPLEX 0x00000004
562 struct sndrv_rawmidi_info {
563 unsigned int device; /* RO/WR (control): device number */
564 unsigned int subdevice; /* RO/WR (control): subdevice number */
565 int stream; /* WR: stream */
566 int card; /* R: card number */
567 unsigned int flags; /* SNDRV_RAWMIDI_INFO_XXXX */
568 unsigned char id[64]; /* ID (user selectable) */
569 unsigned char name[80]; /* name of device */
570 unsigned char subname[32]; /* name of active or selected subdevice */
571 unsigned int subdevices_count;
572 unsigned int subdevices_avail;
573 unsigned char reserved[64]; /* reserved for future use */
576 struct sndrv_rawmidi_params {
578 size_t buffer_size; /* queue size in bytes */
579 size_t avail_min; /* minimum avail bytes for wakeup */
580 unsigned int no_active_sensing: 1; /* do not send active sensing byte in close() */
581 unsigned char reserved[16]; /* reserved for future use */
584 struct sndrv_rawmidi_status {
586 struct timespec tstamp; /* Timestamp */
587 size_t avail; /* available bytes */
588 size_t xruns; /* count of overruns since last status (in bytes) */
589 unsigned char reserved[16]; /* reserved for future use */
593 SNDRV_RAWMIDI_IOCTL_PVERSION = _IOR('W', 0x00, int),
594 SNDRV_RAWMIDI_IOCTL_INFO = _IOR('W', 0x01, struct sndrv_rawmidi_info),
595 SNDRV_RAWMIDI_IOCTL_PARAMS = _IOWR('W', 0x10, struct sndrv_rawmidi_params),
596 SNDRV_RAWMIDI_IOCTL_STATUS = _IOWR('W', 0x20, struct sndrv_rawmidi_status),
597 SNDRV_RAWMIDI_IOCTL_DROP = _IOW('W', 0x30, int),
598 SNDRV_RAWMIDI_IOCTL_DRAIN = _IOW('W', 0x31, int),
602 * Timer section - /dev/snd/timer
605 #define SNDRV_TIMER_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 6)
607 enum sndrv_timer_class {
608 SNDRV_TIMER_CLASS_NONE = -1,
609 SNDRV_TIMER_CLASS_SLAVE = 0,
610 SNDRV_TIMER_CLASS_GLOBAL,
611 SNDRV_TIMER_CLASS_CARD,
612 SNDRV_TIMER_CLASS_PCM,
613 SNDRV_TIMER_CLASS_LAST = SNDRV_TIMER_CLASS_PCM,
616 /* slave timer classes */
617 enum sndrv_timer_slave_class {
618 SNDRV_TIMER_SCLASS_NONE = 0,
619 SNDRV_TIMER_SCLASS_APPLICATION,
620 SNDRV_TIMER_SCLASS_SEQUENCER, /* alias */
621 SNDRV_TIMER_SCLASS_OSS_SEQUENCER, /* alias */
622 SNDRV_TIMER_SCLASS_LAST = SNDRV_TIMER_SCLASS_OSS_SEQUENCER,
625 /* global timers (device member) */
626 #define SNDRV_TIMER_GLOBAL_SYSTEM 0
627 #define SNDRV_TIMER_GLOBAL_RTC 1
628 #define SNDRV_TIMER_GLOBAL_HPET 2
629 #define SNDRV_TIMER_GLOBAL_HRTIMER 3
632 #define SNDRV_TIMER_FLG_SLAVE (1<<0) /* cannot be controlled */
634 struct sndrv_timer_id {
642 struct sndrv_timer_ginfo {
643 struct sndrv_timer_id tid; /* requested timer ID */
644 unsigned int flags; /* timer flags - SNDRV_TIMER_FLG_* */
645 int card; /* card number */
646 unsigned char id[64]; /* timer identification */
647 unsigned char name[80]; /* timer name */
648 unsigned long reserved0; /* reserved for future use */
649 unsigned long resolution; /* average period resolution in ns */
650 unsigned long resolution_min; /* minimal period resolution in ns */
651 unsigned long resolution_max; /* maximal period resolution in ns */
652 unsigned int clients; /* active timer clients */
653 unsigned char reserved[32];
656 struct sndrv_timer_gparams {
657 struct sndrv_timer_id tid; /* requested timer ID */
658 unsigned long period_num; /* requested precise period duration (in seconds) - numerator */
659 unsigned long period_den; /* requested precise period duration (in seconds) - denominator */
660 unsigned char reserved[32];
663 struct sndrv_timer_gstatus {
664 struct sndrv_timer_id tid; /* requested timer ID */
665 unsigned long resolution; /* current period resolution in ns */
666 unsigned long resolution_num; /* precise current period resolution (in seconds) - numerator */
667 unsigned long resolution_den; /* precise current period resolution (in seconds) - denominator */
668 unsigned char reserved[32];
671 struct sndrv_timer_select {
672 struct sndrv_timer_id id; /* bind to timer ID */
673 unsigned char reserved[32]; /* reserved */
676 struct sndrv_timer_info {
677 unsigned int flags; /* timer flags - SNDRV_TIMER_FLG_* */
678 int card; /* card number */
679 unsigned char id[64]; /* timer identificator */
680 unsigned char name[80]; /* timer name */
681 unsigned long reserved0; /* reserved for future use */
682 unsigned long resolution; /* average period resolution in ns */
683 unsigned char reserved[64]; /* reserved */
686 #define SNDRV_TIMER_PSFLG_AUTO (1<<0) /* auto start, otherwise one-shot */
687 #define SNDRV_TIMER_PSFLG_EXCLUSIVE (1<<1) /* exclusive use, precise start/stop/pause/continue */
688 #define SNDRV_TIMER_PSFLG_EARLY_EVENT (1<<2) /* write early event to the poll queue */
690 struct sndrv_timer_params {
691 unsigned int flags; /* flags - SNDRV_MIXER_PSFLG_* */
692 unsigned int ticks; /* requested resolution in ticks */
693 unsigned int queue_size; /* total size of queue (32-1024) */
694 unsigned int reserved0; /* reserved, was: failure locations */
695 unsigned int filter; /* event filter (bitmask of SNDRV_TIMER_EVENT_*) */
696 unsigned char reserved[60]; /* reserved */
699 struct sndrv_timer_status {
700 struct timespec tstamp; /* Timestamp - last update */
701 unsigned int resolution; /* current period resolution in ns */
702 unsigned int lost; /* counter of master tick lost */
703 unsigned int overrun; /* count of read queue overruns */
704 unsigned int queue; /* used queue size */
705 unsigned char reserved[64]; /* reserved */
709 SNDRV_TIMER_IOCTL_PVERSION = _IOR('T', 0x00, int),
710 SNDRV_TIMER_IOCTL_NEXT_DEVICE = _IOWR('T', 0x01, struct sndrv_timer_id),
711 SNDRV_TIMER_IOCTL_TREAD = _IOW('T', 0x02, int),
712 SNDRV_TIMER_IOCTL_GINFO = _IOWR('T', 0x03, struct sndrv_timer_ginfo),
713 SNDRV_TIMER_IOCTL_GPARAMS = _IOW('T', 0x04, struct sndrv_timer_gparams),
714 SNDRV_TIMER_IOCTL_GSTATUS = _IOWR('T', 0x05, struct sndrv_timer_gstatus),
715 SNDRV_TIMER_IOCTL_SELECT = _IOW('T', 0x10, struct sndrv_timer_select),
716 SNDRV_TIMER_IOCTL_INFO = _IOR('T', 0x11, struct sndrv_timer_info),
717 SNDRV_TIMER_IOCTL_PARAMS = _IOW('T', 0x12, struct sndrv_timer_params),
718 SNDRV_TIMER_IOCTL_STATUS = _IOR('T', 0x14, struct sndrv_timer_status),
719 /* The following four ioctls are changed since 1.0.9 due to confliction */
720 SNDRV_TIMER_IOCTL_START = _IO('T', 0xa0),
721 SNDRV_TIMER_IOCTL_STOP = _IO('T', 0xa1),
722 SNDRV_TIMER_IOCTL_CONTINUE = _IO('T', 0xa2),
723 SNDRV_TIMER_IOCTL_PAUSE = _IO('T', 0xa3),
726 struct sndrv_timer_read {
727 unsigned int resolution;
731 enum sndrv_timer_event {
732 SNDRV_TIMER_EVENT_RESOLUTION = 0, /* val = resolution in ns */
733 SNDRV_TIMER_EVENT_TICK, /* val = ticks */
734 SNDRV_TIMER_EVENT_START, /* val = resolution in ns */
735 SNDRV_TIMER_EVENT_STOP, /* val = 0 */
736 SNDRV_TIMER_EVENT_CONTINUE, /* val = resolution in ns */
737 SNDRV_TIMER_EVENT_PAUSE, /* val = 0 */
738 SNDRV_TIMER_EVENT_EARLY, /* val = 0, early event */
739 SNDRV_TIMER_EVENT_SUSPEND, /* val = 0 */
740 SNDRV_TIMER_EVENT_RESUME, /* val = resolution in ns */
741 /* master timer events for slave timer instances */
742 SNDRV_TIMER_EVENT_MSTART = SNDRV_TIMER_EVENT_START + 10,
743 SNDRV_TIMER_EVENT_MSTOP = SNDRV_TIMER_EVENT_STOP + 10,
744 SNDRV_TIMER_EVENT_MCONTINUE = SNDRV_TIMER_EVENT_CONTINUE + 10,
745 SNDRV_TIMER_EVENT_MPAUSE = SNDRV_TIMER_EVENT_PAUSE + 10,
746 SNDRV_TIMER_EVENT_MSUSPEND = SNDRV_TIMER_EVENT_SUSPEND + 10,
747 SNDRV_TIMER_EVENT_MRESUME = SNDRV_TIMER_EVENT_RESUME + 10,
750 struct sndrv_timer_tread {
752 struct timespec tstamp;
756 /****************************************************************************
758 * Section for driver control interface - /dev/snd/control? *
760 ****************************************************************************/
762 #define SNDRV_CTL_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 7)
764 struct sndrv_ctl_card_info {
765 int card; /* card number */
766 int pad; /* reserved for future (was type) */
767 unsigned char id[16]; /* ID of card (user selectable) */
768 unsigned char driver[16]; /* Driver name */
769 unsigned char name[32]; /* Short name of soundcard */
770 unsigned char longname[80]; /* name + info text about soundcard */
771 unsigned char reserved_[16]; /* reserved for future (was ID of mixer) */
772 unsigned char mixername[80]; /* visual mixer identification */
773 unsigned char components[128]; /* card components / fine identification, delimited with one space (AC97 etc..) */
776 enum sndrv_ctl_elem_type {
777 SNDRV_CTL_ELEM_TYPE_NONE = 0, /* invalid */
778 SNDRV_CTL_ELEM_TYPE_BOOLEAN, /* boolean type */
779 SNDRV_CTL_ELEM_TYPE_INTEGER, /* integer type */
780 SNDRV_CTL_ELEM_TYPE_ENUMERATED, /* enumerated type */
781 SNDRV_CTL_ELEM_TYPE_BYTES, /* byte array */
782 SNDRV_CTL_ELEM_TYPE_IEC958, /* IEC958 (S/PDIF) setup */
783 SNDRV_CTL_ELEM_TYPE_INTEGER64, /* 64-bit integer type */
784 SNDRV_CTL_ELEM_TYPE_LAST = SNDRV_CTL_ELEM_TYPE_INTEGER64,
787 enum sndrv_ctl_elem_iface {
788 SNDRV_CTL_ELEM_IFACE_CARD = 0, /* global control */
789 SNDRV_CTL_ELEM_IFACE_HWDEP, /* hardware dependent device */
790 SNDRV_CTL_ELEM_IFACE_MIXER, /* virtual mixer device */
791 SNDRV_CTL_ELEM_IFACE_PCM, /* PCM device */
792 SNDRV_CTL_ELEM_IFACE_RAWMIDI, /* RawMidi device */
793 SNDRV_CTL_ELEM_IFACE_TIMER, /* timer device */
794 SNDRV_CTL_ELEM_IFACE_SEQUENCER, /* sequencer client */
795 SNDRV_CTL_ELEM_IFACE_LAST = SNDRV_CTL_ELEM_IFACE_SEQUENCER,
798 #define SNDRV_CTL_ELEM_ACCESS_READ (1<<0)
799 #define SNDRV_CTL_ELEM_ACCESS_WRITE (1<<1)
800 #define SNDRV_CTL_ELEM_ACCESS_READWRITE (SNDRV_CTL_ELEM_ACCESS_READ|SNDRV_CTL_ELEM_ACCESS_WRITE)
801 #define SNDRV_CTL_ELEM_ACCESS_VOLATILE (1<<2) /* control value may be changed without a notification */
802 #define SNDRV_CTL_ELEM_ACCESS_TIMESTAMP (1<<3) /* when was control changed */
803 #define SNDRV_CTL_ELEM_ACCESS_TLV_READ (1<<4) /* TLV read is possible */
804 #define SNDRV_CTL_ELEM_ACCESS_TLV_WRITE (1<<5) /* TLV write is possible */
805 #define SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE (SNDRV_CTL_ELEM_ACCESS_TLV_READ|SNDRV_CTL_ELEM_ACCESS_TLV_WRITE)
806 #define SNDRV_CTL_ELEM_ACCESS_TLV_COMMAND (1<<6) /* TLV command is possible */
807 #define SNDRV_CTL_ELEM_ACCESS_INACTIVE (1<<8) /* control does actually nothing, but may be updated */
808 #define SNDRV_CTL_ELEM_ACCESS_LOCK (1<<9) /* write lock */
809 #define SNDRV_CTL_ELEM_ACCESS_OWNER (1<<10) /* write lock owner */
810 #define SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK (1<<28) /* kernel use a TLV callback */
811 #define SNDRV_CTL_ELEM_ACCESS_USER (1<<29) /* user space element */
812 /* bits 30 and 31 are obsoleted (for indirect access) */
814 /* for further details see the ACPI and PCI power management specification */
815 #define SNDRV_CTL_POWER_D0 0x0000 /* full On */
816 #define SNDRV_CTL_POWER_D1 0x0100 /* partial On */
817 #define SNDRV_CTL_POWER_D2 0x0200 /* partial On */
818 #define SNDRV_CTL_POWER_D3 0x0300 /* Off */
819 #define SNDRV_CTL_POWER_D3hot (SNDRV_CTL_POWER_D3|0x0000) /* Off, with power */
820 #define SNDRV_CTL_POWER_D3cold (SNDRV_CTL_POWER_D3|0x0001) /* Off, without power */
822 struct sndrv_ctl_elem_id {
823 unsigned int numid; /* numeric identifier, zero = invalid */
824 int iface; /* interface identifier */
825 unsigned int device; /* device/client number */
826 unsigned int subdevice; /* subdevice (substream) number */
827 unsigned char name[44]; /* ASCII name of item */
828 unsigned int index; /* index of item */
831 struct sndrv_ctl_elem_list {
832 unsigned int offset; /* W: first element ID to get */
833 unsigned int space; /* W: count of element IDs to get */
834 unsigned int used; /* R: count of element IDs set */
835 unsigned int count; /* R: count of all elements */
836 struct sndrv_ctl_elem_id *pids; /* R: IDs */
837 unsigned char reserved[50];
840 struct sndrv_ctl_elem_info {
841 struct sndrv_ctl_elem_id id; /* W: element ID */
842 int type; /* R: value type - SNDRV_CTL_ELEM_TYPE_* */
843 unsigned int access; /* R: value access (bitmask) - SNDRV_CTL_ELEM_ACCESS_* */
844 unsigned int count; /* count of values */
845 pid_t owner; /* owner's PID of this control */
848 long min; /* R: minimum value */
849 long max; /* R: maximum value */
850 long step; /* R: step (0 variable) */
853 long long min; /* R: minimum value */
854 long long max; /* R: maximum value */
855 long long step; /* R: step (0 variable) */
858 unsigned int items; /* R: number of items */
859 unsigned int item; /* W: item number */
860 char name[64]; /* R: value name */
861 __u64 names_ptr; /* W: names list (ELEM_ADD only) */
862 unsigned int names_length;
864 unsigned char reserved[128];
867 unsigned short d[4]; /* dimensions */
868 unsigned short *d_ptr; /* indirect - obsoleted */
870 unsigned char reserved[64-4*sizeof(unsigned short)];
873 struct sndrv_ctl_elem_value {
874 struct sndrv_ctl_elem_id id; /* W: element ID */
875 unsigned int indirect: 1; /* W: indirect access - obsoleted */
879 long *value_ptr; /* obsoleted */
883 long long *value_ptr; /* obsoleted */
886 unsigned int item[128];
887 unsigned int *item_ptr; /* obsoleted */
890 unsigned char data[512];
891 unsigned char *data_ptr; /* obsoleted */
893 struct sndrv_aes_iec958 iec958;
895 struct timespec tstamp;
896 unsigned char reserved[128-sizeof(struct timespec)];
899 struct sndrv_ctl_tlv {
900 unsigned int numid; /* control element numeric identification */
901 unsigned int length; /* in bytes aligned to 4 */
902 unsigned int tlv[0]; /* first TLV */
906 SNDRV_CTL_IOCTL_PVERSION = _IOR('U', 0x00, int),
907 SNDRV_CTL_IOCTL_CARD_INFO = _IOR('U', 0x01, struct sndrv_ctl_card_info),
908 SNDRV_CTL_IOCTL_ELEM_LIST = _IOWR('U', 0x10, struct sndrv_ctl_elem_list),
909 SNDRV_CTL_IOCTL_ELEM_INFO = _IOWR('U', 0x11, struct sndrv_ctl_elem_info),
910 SNDRV_CTL_IOCTL_ELEM_READ = _IOWR('U', 0x12, struct sndrv_ctl_elem_value),
911 SNDRV_CTL_IOCTL_ELEM_WRITE = _IOWR('U', 0x13, struct sndrv_ctl_elem_value),
912 SNDRV_CTL_IOCTL_ELEM_LOCK = _IOW('U', 0x14, struct sndrv_ctl_elem_id),
913 SNDRV_CTL_IOCTL_ELEM_UNLOCK = _IOW('U', 0x15, struct sndrv_ctl_elem_id),
914 SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS = _IOWR('U', 0x16, int),
915 SNDRV_CTL_IOCTL_ELEM_ADD = _IOWR('U', 0x17, struct sndrv_ctl_elem_info),
916 SNDRV_CTL_IOCTL_ELEM_REPLACE = _IOWR('U', 0x18, struct sndrv_ctl_elem_info),
917 SNDRV_CTL_IOCTL_ELEM_REMOVE = _IOWR('U', 0x19, struct sndrv_ctl_elem_id),
918 SNDRV_CTL_IOCTL_TLV_READ = _IOWR('U', 0x1a, struct sndrv_ctl_tlv),
919 SNDRV_CTL_IOCTL_TLV_WRITE = _IOWR('U', 0x1b, struct sndrv_ctl_tlv),
920 SNDRV_CTL_IOCTL_TLV_COMMAND = _IOWR('U', 0x1c, struct sndrv_ctl_tlv),
921 SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE = _IOWR('U', 0x20, int),
922 SNDRV_CTL_IOCTL_HWDEP_INFO = _IOR('U', 0x21, struct sndrv_hwdep_info),
923 SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE = _IOR('U', 0x30, int),
924 SNDRV_CTL_IOCTL_PCM_INFO = _IOWR('U', 0x31, struct sndrv_pcm_info),
925 SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE = _IOW('U', 0x32, int),
926 SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE = _IOWR('U', 0x40, int),
927 SNDRV_CTL_IOCTL_RAWMIDI_INFO = _IOWR('U', 0x41, struct sndrv_rawmidi_info),
928 SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE = _IOW('U', 0x42, int),
929 SNDRV_CTL_IOCTL_POWER = _IOWR('U', 0xd0, int),
930 SNDRV_CTL_IOCTL_POWER_STATE = _IOR('U', 0xd1, int),
937 enum sndrv_ctl_event_type {
938 SNDRV_CTL_EVENT_ELEM = 0,
939 SNDRV_CTL_EVENT_LAST = SNDRV_CTL_EVENT_ELEM,
942 #define SNDRV_CTL_EVENT_MASK_VALUE (1<<0) /* element value was changed */
943 #define SNDRV_CTL_EVENT_MASK_INFO (1<<1) /* element info was changed */
944 #define SNDRV_CTL_EVENT_MASK_ADD (1<<2) /* element was added */
945 #define SNDRV_CTL_EVENT_MASK_TLV (1<<3) /* element TLV tree was changed */
946 #define SNDRV_CTL_EVENT_MASK_REMOVE (~0U) /* element was removed */
948 struct sndrv_ctl_event {
949 int type; /* event type - SNDRV_CTL_EVENT_* */
953 struct sndrv_ctl_elem_id id;
955 unsigned char data8[60];
963 #define SNDRV_CTL_NAME_NONE ""
964 #define SNDRV_CTL_NAME_PLAYBACK "Playback "
965 #define SNDRV_CTL_NAME_CAPTURE "Capture "
967 #define SNDRV_CTL_NAME_IEC958_NONE ""
968 #define SNDRV_CTL_NAME_IEC958_SWITCH "Switch"
969 #define SNDRV_CTL_NAME_IEC958_VOLUME "Volume"
970 #define SNDRV_CTL_NAME_IEC958_DEFAULT "Default"
971 #define SNDRV_CTL_NAME_IEC958_MASK "Mask"
972 #define SNDRV_CTL_NAME_IEC958_CON_MASK "Con Mask"
973 #define SNDRV_CTL_NAME_IEC958_PRO_MASK "Pro Mask"
974 #define SNDRV_CTL_NAME_IEC958_PCM_STREAM "PCM Stream"
975 #define SNDRV_CTL_NAME_IEC958(expl,direction,what) "IEC958 " expl SNDRV_CTL_NAME_##direction SNDRV_CTL_NAME_IEC958_##what
977 #endif /* __SOUND_ASOUND_H */