ia64/pv_ops/xen: implement xen pv_time_ops.
[pv_ops_mirror.git] / include / sound / asound.h
blob3eaf155b850d8b0c266ea0d930823317033948c8
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>
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 #ifdef __KERNEL__
27 #include <linux/ioctl.h>
28 #include <linux/types.h>
29 #include <linux/time.h>
30 #include <asm/byteorder.h>
32 #ifdef __LITTLE_ENDIAN
33 #define SNDRV_LITTLE_ENDIAN
34 #else
35 #ifdef __BIG_ENDIAN
36 #define SNDRV_BIG_ENDIAN
37 #else
38 #error "Unsupported endian..."
39 #endif
40 #endif
42 #endif /* __KERNEL__ **/
45 * protocol version
48 #define SNDRV_PROTOCOL_VERSION(major, minor, subminor) (((major)<<16)|((minor)<<8)|(subminor))
49 #define SNDRV_PROTOCOL_MAJOR(version) (((version)>>16)&0xffff)
50 #define SNDRV_PROTOCOL_MINOR(version) (((version)>>8)&0xff)
51 #define SNDRV_PROTOCOL_MICRO(version) ((version)&0xff)
52 #define SNDRV_PROTOCOL_INCOMPATIBLE(kversion, uversion) \
53 (SNDRV_PROTOCOL_MAJOR(kversion) != SNDRV_PROTOCOL_MAJOR(uversion) || \
54 (SNDRV_PROTOCOL_MAJOR(kversion) == SNDRV_PROTOCOL_MAJOR(uversion) && \
55 SNDRV_PROTOCOL_MINOR(kversion) != SNDRV_PROTOCOL_MINOR(uversion)))
57 /****************************************************************************
58 * *
59 * Digital audio interface *
60 * *
61 ****************************************************************************/
63 struct snd_aes_iec958 {
64 unsigned char status[24]; /* AES/IEC958 channel status bits */
65 unsigned char subcode[147]; /* AES/IEC958 subcode bits */
66 unsigned char pad; /* nothing */
67 unsigned char dig_subframe[4]; /* AES/IEC958 subframe bits */
70 /****************************************************************************
71 * *
72 * Section for driver hardware dependent interface - /dev/snd/hw? *
73 * *
74 ****************************************************************************/
76 #define SNDRV_HWDEP_VERSION SNDRV_PROTOCOL_VERSION(1, 0, 1)
78 enum {
79 SNDRV_HWDEP_IFACE_OPL2 = 0,
80 SNDRV_HWDEP_IFACE_OPL3,
81 SNDRV_HWDEP_IFACE_OPL4,
82 SNDRV_HWDEP_IFACE_SB16CSP, /* Creative Signal Processor */
83 SNDRV_HWDEP_IFACE_EMU10K1, /* FX8010 processor in EMU10K1 chip */
84 SNDRV_HWDEP_IFACE_YSS225, /* Yamaha FX processor */
85 SNDRV_HWDEP_IFACE_ICS2115, /* Wavetable synth */
86 SNDRV_HWDEP_IFACE_SSCAPE, /* Ensoniq SoundScape ISA card (MC68EC000) */
87 SNDRV_HWDEP_IFACE_VX, /* Digigram VX cards */
88 SNDRV_HWDEP_IFACE_MIXART, /* Digigram miXart cards */
89 SNDRV_HWDEP_IFACE_USX2Y, /* Tascam US122, US224 & US428 usb */
90 SNDRV_HWDEP_IFACE_EMUX_WAVETABLE, /* EmuX wavetable */
91 SNDRV_HWDEP_IFACE_BLUETOOTH, /* Bluetooth audio */
92 SNDRV_HWDEP_IFACE_USX2Y_PCM, /* Tascam US122, US224 & US428 rawusb pcm */
93 SNDRV_HWDEP_IFACE_PCXHR, /* Digigram PCXHR */
94 SNDRV_HWDEP_IFACE_SB_RC, /* SB Extigy/Audigy2NX remote control */
95 SNDRV_HWDEP_IFACE_HDA, /* HD-audio */
97 /* Don't forget to change the following: */
98 SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_HDA
101 struct snd_hwdep_info {
102 unsigned int device; /* WR: device number */
103 int card; /* R: card number */
104 unsigned char id[64]; /* ID (user selectable) */
105 unsigned char name[80]; /* hwdep name */
106 int iface; /* hwdep interface */
107 unsigned char reserved[64]; /* reserved for future */
110 /* generic DSP loader */
111 struct snd_hwdep_dsp_status {
112 unsigned int version; /* R: driver-specific version */
113 unsigned char id[32]; /* R: driver-specific ID string */
114 unsigned int num_dsps; /* R: number of DSP images to transfer */
115 unsigned int dsp_loaded; /* R: bit flags indicating the loaded DSPs */
116 unsigned int chip_ready; /* R: 1 = initialization finished */
117 unsigned char reserved[16]; /* reserved for future use */
120 struct snd_hwdep_dsp_image {
121 unsigned int index; /* W: DSP index */
122 unsigned char name[64]; /* W: ID (e.g. file name) */
123 unsigned char __user *image; /* W: binary image */
124 size_t length; /* W: size of image in bytes */
125 unsigned long driver_data; /* W: driver-specific data */
128 enum {
129 SNDRV_HWDEP_IOCTL_PVERSION = _IOR ('H', 0x00, int),
130 SNDRV_HWDEP_IOCTL_INFO = _IOR ('H', 0x01, struct snd_hwdep_info),
131 SNDRV_HWDEP_IOCTL_DSP_STATUS = _IOR('H', 0x02, struct snd_hwdep_dsp_status),
132 SNDRV_HWDEP_IOCTL_DSP_LOAD = _IOW('H', 0x03, struct snd_hwdep_dsp_image)
135 /*****************************************************************************
137 * Digital Audio (PCM) interface - /dev/snd/pcm?? *
139 *****************************************************************************/
141 #define SNDRV_PCM_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 9)
143 typedef unsigned long snd_pcm_uframes_t;
144 typedef signed long snd_pcm_sframes_t;
146 enum {
147 SNDRV_PCM_CLASS_GENERIC = 0, /* standard mono or stereo device */
148 SNDRV_PCM_CLASS_MULTI, /* multichannel device */
149 SNDRV_PCM_CLASS_MODEM, /* software modem class */
150 SNDRV_PCM_CLASS_DIGITIZER, /* digitizer class */
151 /* Don't forget to change the following: */
152 SNDRV_PCM_CLASS_LAST = SNDRV_PCM_CLASS_DIGITIZER,
155 enum {
156 SNDRV_PCM_SUBCLASS_GENERIC_MIX = 0, /* mono or stereo subdevices are mixed together */
157 SNDRV_PCM_SUBCLASS_MULTI_MIX, /* multichannel subdevices are mixed together */
158 /* Don't forget to change the following: */
159 SNDRV_PCM_SUBCLASS_LAST = SNDRV_PCM_SUBCLASS_MULTI_MIX,
162 enum {
163 SNDRV_PCM_STREAM_PLAYBACK = 0,
164 SNDRV_PCM_STREAM_CAPTURE,
165 SNDRV_PCM_STREAM_LAST = SNDRV_PCM_STREAM_CAPTURE,
168 typedef int __bitwise snd_pcm_access_t;
169 #define SNDRV_PCM_ACCESS_MMAP_INTERLEAVED ((__force snd_pcm_access_t) 0) /* interleaved mmap */
170 #define SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED ((__force snd_pcm_access_t) 1) /* noninterleaved mmap */
171 #define SNDRV_PCM_ACCESS_MMAP_COMPLEX ((__force snd_pcm_access_t) 2) /* complex mmap */
172 #define SNDRV_PCM_ACCESS_RW_INTERLEAVED ((__force snd_pcm_access_t) 3) /* readi/writei */
173 #define SNDRV_PCM_ACCESS_RW_NONINTERLEAVED ((__force snd_pcm_access_t) 4) /* readn/writen */
174 #define SNDRV_PCM_ACCESS_LAST SNDRV_PCM_ACCESS_RW_NONINTERLEAVED
176 typedef int __bitwise snd_pcm_format_t;
177 #define SNDRV_PCM_FORMAT_S8 ((__force snd_pcm_format_t) 0)
178 #define SNDRV_PCM_FORMAT_U8 ((__force snd_pcm_format_t) 1)
179 #define SNDRV_PCM_FORMAT_S16_LE ((__force snd_pcm_format_t) 2)
180 #define SNDRV_PCM_FORMAT_S16_BE ((__force snd_pcm_format_t) 3)
181 #define SNDRV_PCM_FORMAT_U16_LE ((__force snd_pcm_format_t) 4)
182 #define SNDRV_PCM_FORMAT_U16_BE ((__force snd_pcm_format_t) 5)
183 #define SNDRV_PCM_FORMAT_S24_LE ((__force snd_pcm_format_t) 6) /* low three bytes */
184 #define SNDRV_PCM_FORMAT_S24_BE ((__force snd_pcm_format_t) 7) /* low three bytes */
185 #define SNDRV_PCM_FORMAT_U24_LE ((__force snd_pcm_format_t) 8) /* low three bytes */
186 #define SNDRV_PCM_FORMAT_U24_BE ((__force snd_pcm_format_t) 9) /* low three bytes */
187 #define SNDRV_PCM_FORMAT_S32_LE ((__force snd_pcm_format_t) 10)
188 #define SNDRV_PCM_FORMAT_S32_BE ((__force snd_pcm_format_t) 11)
189 #define SNDRV_PCM_FORMAT_U32_LE ((__force snd_pcm_format_t) 12)
190 #define SNDRV_PCM_FORMAT_U32_BE ((__force snd_pcm_format_t) 13)
191 #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 */
192 #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 */
193 #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 */
194 #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 */
195 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE ((__force snd_pcm_format_t) 18) /* IEC-958 subframe, Little Endian */
196 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE ((__force snd_pcm_format_t) 19) /* IEC-958 subframe, Big Endian */
197 #define SNDRV_PCM_FORMAT_MU_LAW ((__force snd_pcm_format_t) 20)
198 #define SNDRV_PCM_FORMAT_A_LAW ((__force snd_pcm_format_t) 21)
199 #define SNDRV_PCM_FORMAT_IMA_ADPCM ((__force snd_pcm_format_t) 22)
200 #define SNDRV_PCM_FORMAT_MPEG ((__force snd_pcm_format_t) 23)
201 #define SNDRV_PCM_FORMAT_GSM ((__force snd_pcm_format_t) 24)
202 #define SNDRV_PCM_FORMAT_SPECIAL ((__force snd_pcm_format_t) 31)
203 #define SNDRV_PCM_FORMAT_S24_3LE ((__force snd_pcm_format_t) 32) /* in three bytes */
204 #define SNDRV_PCM_FORMAT_S24_3BE ((__force snd_pcm_format_t) 33) /* in three bytes */
205 #define SNDRV_PCM_FORMAT_U24_3LE ((__force snd_pcm_format_t) 34) /* in three bytes */
206 #define SNDRV_PCM_FORMAT_U24_3BE ((__force snd_pcm_format_t) 35) /* in three bytes */
207 #define SNDRV_PCM_FORMAT_S20_3LE ((__force snd_pcm_format_t) 36) /* in three bytes */
208 #define SNDRV_PCM_FORMAT_S20_3BE ((__force snd_pcm_format_t) 37) /* in three bytes */
209 #define SNDRV_PCM_FORMAT_U20_3LE ((__force snd_pcm_format_t) 38) /* in three bytes */
210 #define SNDRV_PCM_FORMAT_U20_3BE ((__force snd_pcm_format_t) 39) /* in three bytes */
211 #define SNDRV_PCM_FORMAT_S18_3LE ((__force snd_pcm_format_t) 40) /* in three bytes */
212 #define SNDRV_PCM_FORMAT_S18_3BE ((__force snd_pcm_format_t) 41) /* in three bytes */
213 #define SNDRV_PCM_FORMAT_U18_3LE ((__force snd_pcm_format_t) 42) /* in three bytes */
214 #define SNDRV_PCM_FORMAT_U18_3BE ((__force snd_pcm_format_t) 43) /* in three bytes */
215 #define SNDRV_PCM_FORMAT_LAST SNDRV_PCM_FORMAT_U18_3BE
217 #ifdef SNDRV_LITTLE_ENDIAN
218 #define SNDRV_PCM_FORMAT_S16 SNDRV_PCM_FORMAT_S16_LE
219 #define SNDRV_PCM_FORMAT_U16 SNDRV_PCM_FORMAT_U16_LE
220 #define SNDRV_PCM_FORMAT_S24 SNDRV_PCM_FORMAT_S24_LE
221 #define SNDRV_PCM_FORMAT_U24 SNDRV_PCM_FORMAT_U24_LE
222 #define SNDRV_PCM_FORMAT_S32 SNDRV_PCM_FORMAT_S32_LE
223 #define SNDRV_PCM_FORMAT_U32 SNDRV_PCM_FORMAT_U32_LE
224 #define SNDRV_PCM_FORMAT_FLOAT SNDRV_PCM_FORMAT_FLOAT_LE
225 #define SNDRV_PCM_FORMAT_FLOAT64 SNDRV_PCM_FORMAT_FLOAT64_LE
226 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE
227 #endif
228 #ifdef SNDRV_BIG_ENDIAN
229 #define SNDRV_PCM_FORMAT_S16 SNDRV_PCM_FORMAT_S16_BE
230 #define SNDRV_PCM_FORMAT_U16 SNDRV_PCM_FORMAT_U16_BE
231 #define SNDRV_PCM_FORMAT_S24 SNDRV_PCM_FORMAT_S24_BE
232 #define SNDRV_PCM_FORMAT_U24 SNDRV_PCM_FORMAT_U24_BE
233 #define SNDRV_PCM_FORMAT_S32 SNDRV_PCM_FORMAT_S32_BE
234 #define SNDRV_PCM_FORMAT_U32 SNDRV_PCM_FORMAT_U32_BE
235 #define SNDRV_PCM_FORMAT_FLOAT SNDRV_PCM_FORMAT_FLOAT_BE
236 #define SNDRV_PCM_FORMAT_FLOAT64 SNDRV_PCM_FORMAT_FLOAT64_BE
237 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE
238 #endif
240 typedef int __bitwise snd_pcm_subformat_t;
241 #define SNDRV_PCM_SUBFORMAT_STD ((__force snd_pcm_subformat_t) 0)
242 #define SNDRV_PCM_SUBFORMAT_LAST SNDRV_PCM_SUBFORMAT_STD
244 #define SNDRV_PCM_INFO_MMAP 0x00000001 /* hardware supports mmap */
245 #define SNDRV_PCM_INFO_MMAP_VALID 0x00000002 /* period data are valid during transfer */
246 #define SNDRV_PCM_INFO_DOUBLE 0x00000004 /* Double buffering needed for PCM start/stop */
247 #define SNDRV_PCM_INFO_BATCH 0x00000010 /* double buffering */
248 #define SNDRV_PCM_INFO_INTERLEAVED 0x00000100 /* channels are interleaved */
249 #define SNDRV_PCM_INFO_NONINTERLEAVED 0x00000200 /* channels are not interleaved */
250 #define SNDRV_PCM_INFO_COMPLEX 0x00000400 /* complex frame organization (mmap only) */
251 #define SNDRV_PCM_INFO_BLOCK_TRANSFER 0x00010000 /* hardware transfer block of samples */
252 #define SNDRV_PCM_INFO_OVERRANGE 0x00020000 /* hardware supports ADC (capture) overrange detection */
253 #define SNDRV_PCM_INFO_RESUME 0x00040000 /* hardware supports stream resume after suspend */
254 #define SNDRV_PCM_INFO_PAUSE 0x00080000 /* pause ioctl is supported */
255 #define SNDRV_PCM_INFO_HALF_DUPLEX 0x00100000 /* only half duplex */
256 #define SNDRV_PCM_INFO_JOINT_DUPLEX 0x00200000 /* playback and capture stream are somewhat correlated */
257 #define SNDRV_PCM_INFO_SYNC_START 0x00400000 /* pcm support some kind of sync go */
259 typedef int __bitwise snd_pcm_state_t;
260 #define SNDRV_PCM_STATE_OPEN ((__force snd_pcm_state_t) 0) /* stream is open */
261 #define SNDRV_PCM_STATE_SETUP ((__force snd_pcm_state_t) 1) /* stream has a setup */
262 #define SNDRV_PCM_STATE_PREPARED ((__force snd_pcm_state_t) 2) /* stream is ready to start */
263 #define SNDRV_PCM_STATE_RUNNING ((__force snd_pcm_state_t) 3) /* stream is running */
264 #define SNDRV_PCM_STATE_XRUN ((__force snd_pcm_state_t) 4) /* stream reached an xrun */
265 #define SNDRV_PCM_STATE_DRAINING ((__force snd_pcm_state_t) 5) /* stream is draining */
266 #define SNDRV_PCM_STATE_PAUSED ((__force snd_pcm_state_t) 6) /* stream is paused */
267 #define SNDRV_PCM_STATE_SUSPENDED ((__force snd_pcm_state_t) 7) /* hardware is suspended */
268 #define SNDRV_PCM_STATE_DISCONNECTED ((__force snd_pcm_state_t) 8) /* hardware is disconnected */
269 #define SNDRV_PCM_STATE_LAST SNDRV_PCM_STATE_DISCONNECTED
271 enum {
272 SNDRV_PCM_MMAP_OFFSET_DATA = 0x00000000,
273 SNDRV_PCM_MMAP_OFFSET_STATUS = 0x80000000,
274 SNDRV_PCM_MMAP_OFFSET_CONTROL = 0x81000000,
277 union snd_pcm_sync_id {
278 unsigned char id[16];
279 unsigned short id16[8];
280 unsigned int id32[4];
283 struct snd_pcm_info {
284 unsigned int device; /* RO/WR (control): device number */
285 unsigned int subdevice; /* RO/WR (control): subdevice number */
286 int stream; /* RO/WR (control): stream direction */
287 int card; /* R: card number */
288 unsigned char id[64]; /* ID (user selectable) */
289 unsigned char name[80]; /* name of this device */
290 unsigned char subname[32]; /* subdevice name */
291 int dev_class; /* SNDRV_PCM_CLASS_* */
292 int dev_subclass; /* SNDRV_PCM_SUBCLASS_* */
293 unsigned int subdevices_count;
294 unsigned int subdevices_avail;
295 union snd_pcm_sync_id sync; /* hardware synchronization ID */
296 unsigned char reserved[64]; /* reserved for future... */
299 typedef int __bitwise snd_pcm_hw_param_t;
300 #define SNDRV_PCM_HW_PARAM_ACCESS ((__force snd_pcm_hw_param_t) 0) /* Access type */
301 #define SNDRV_PCM_HW_PARAM_FORMAT ((__force snd_pcm_hw_param_t) 1) /* Format */
302 #define SNDRV_PCM_HW_PARAM_SUBFORMAT ((__force snd_pcm_hw_param_t) 2) /* Subformat */
303 #define SNDRV_PCM_HW_PARAM_FIRST_MASK SNDRV_PCM_HW_PARAM_ACCESS
304 #define SNDRV_PCM_HW_PARAM_LAST_MASK SNDRV_PCM_HW_PARAM_SUBFORMAT
306 #define SNDRV_PCM_HW_PARAM_SAMPLE_BITS ((__force snd_pcm_hw_param_t) 8) /* Bits per sample */
307 #define SNDRV_PCM_HW_PARAM_FRAME_BITS ((__force snd_pcm_hw_param_t) 9) /* Bits per frame */
308 #define SNDRV_PCM_HW_PARAM_CHANNELS ((__force snd_pcm_hw_param_t) 10) /* Channels */
309 #define SNDRV_PCM_HW_PARAM_RATE ((__force snd_pcm_hw_param_t) 11) /* Approx rate */
310 #define SNDRV_PCM_HW_PARAM_PERIOD_TIME ((__force snd_pcm_hw_param_t) 12) /* Approx distance between interrupts in us */
311 #define SNDRV_PCM_HW_PARAM_PERIOD_SIZE ((__force snd_pcm_hw_param_t) 13) /* Approx frames between interrupts */
312 #define SNDRV_PCM_HW_PARAM_PERIOD_BYTES ((__force snd_pcm_hw_param_t) 14) /* Approx bytes between interrupts */
313 #define SNDRV_PCM_HW_PARAM_PERIODS ((__force snd_pcm_hw_param_t) 15) /* Approx interrupts per buffer */
314 #define SNDRV_PCM_HW_PARAM_BUFFER_TIME ((__force snd_pcm_hw_param_t) 16) /* Approx duration of buffer in us */
315 #define SNDRV_PCM_HW_PARAM_BUFFER_SIZE ((__force snd_pcm_hw_param_t) 17) /* Size of buffer in frames */
316 #define SNDRV_PCM_HW_PARAM_BUFFER_BYTES ((__force snd_pcm_hw_param_t) 18) /* Size of buffer in bytes */
317 #define SNDRV_PCM_HW_PARAM_TICK_TIME ((__force snd_pcm_hw_param_t) 19) /* Approx tick duration in us */
318 #define SNDRV_PCM_HW_PARAM_FIRST_INTERVAL SNDRV_PCM_HW_PARAM_SAMPLE_BITS
319 #define SNDRV_PCM_HW_PARAM_LAST_INTERVAL SNDRV_PCM_HW_PARAM_TICK_TIME
321 #define SNDRV_PCM_HW_PARAMS_NORESAMPLE (1<<0) /* avoid rate resampling */
323 struct snd_interval {
324 unsigned int min, max;
325 unsigned int openmin:1,
326 openmax:1,
327 integer:1,
328 empty:1;
331 #define SNDRV_MASK_MAX 256
333 struct snd_mask {
334 u_int32_t bits[(SNDRV_MASK_MAX+31)/32];
337 struct snd_pcm_hw_params {
338 unsigned int flags;
339 struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK -
340 SNDRV_PCM_HW_PARAM_FIRST_MASK + 1];
341 struct snd_mask mres[5]; /* reserved masks */
342 struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL -
343 SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];
344 struct snd_interval ires[9]; /* reserved intervals */
345 unsigned int rmask; /* W: requested masks */
346 unsigned int cmask; /* R: changed masks */
347 unsigned int info; /* R: Info flags for returned setup */
348 unsigned int msbits; /* R: used most significant bits */
349 unsigned int rate_num; /* R: rate numerator */
350 unsigned int rate_den; /* R: rate denominator */
351 snd_pcm_uframes_t fifo_size; /* R: chip FIFO size in frames */
352 unsigned char reserved[64]; /* reserved for future */
355 enum {
356 SNDRV_PCM_TSTAMP_NONE = 0,
357 SNDRV_PCM_TSTAMP_ENABLE,
358 SNDRV_PCM_TSTAMP_LAST = SNDRV_PCM_TSTAMP_ENABLE,
361 struct snd_pcm_sw_params {
362 int tstamp_mode; /* timestamp mode */
363 unsigned int period_step;
364 unsigned int sleep_min; /* min ticks to sleep */
365 snd_pcm_uframes_t avail_min; /* min avail frames for wakeup */
366 snd_pcm_uframes_t xfer_align; /* obsolete: xfer size need to be a multiple */
367 snd_pcm_uframes_t start_threshold; /* min hw_avail frames for automatic start */
368 snd_pcm_uframes_t stop_threshold; /* min avail frames for automatic stop */
369 snd_pcm_uframes_t silence_threshold; /* min distance from noise for silence filling */
370 snd_pcm_uframes_t silence_size; /* silence block size */
371 snd_pcm_uframes_t boundary; /* pointers wrap point */
372 unsigned char reserved[64]; /* reserved for future */
375 struct snd_pcm_channel_info {
376 unsigned int channel;
377 off_t offset; /* mmap offset */
378 unsigned int first; /* offset to first sample in bits */
379 unsigned int step; /* samples distance in bits */
382 struct snd_pcm_status {
383 snd_pcm_state_t state; /* stream state */
384 struct timespec trigger_tstamp; /* time when stream was started/stopped/paused */
385 struct timespec tstamp; /* reference timestamp */
386 snd_pcm_uframes_t appl_ptr; /* appl ptr */
387 snd_pcm_uframes_t hw_ptr; /* hw ptr */
388 snd_pcm_sframes_t delay; /* current delay in frames */
389 snd_pcm_uframes_t avail; /* number of frames available */
390 snd_pcm_uframes_t avail_max; /* max frames available on hw since last status */
391 snd_pcm_uframes_t overrange; /* count of ADC (capture) overrange detections from last status */
392 snd_pcm_state_t suspended_state; /* suspended stream state */
393 unsigned char reserved[60]; /* must be filled with zero */
396 struct snd_pcm_mmap_status {
397 snd_pcm_state_t state; /* RO: state - SNDRV_PCM_STATE_XXXX */
398 int pad1; /* Needed for 64 bit alignment */
399 snd_pcm_uframes_t hw_ptr; /* RO: hw ptr (0...boundary-1) */
400 struct timespec tstamp; /* Timestamp */
401 snd_pcm_state_t suspended_state; /* RO: suspended stream state */
404 struct snd_pcm_mmap_control {
405 snd_pcm_uframes_t appl_ptr; /* RW: appl ptr (0...boundary-1) */
406 snd_pcm_uframes_t avail_min; /* RW: min available frames for wakeup */
409 #define SNDRV_PCM_SYNC_PTR_HWSYNC (1<<0) /* execute hwsync */
410 #define SNDRV_PCM_SYNC_PTR_APPL (1<<1) /* get appl_ptr from driver (r/w op) */
411 #define SNDRV_PCM_SYNC_PTR_AVAIL_MIN (1<<2) /* get avail_min from driver */
413 struct snd_pcm_sync_ptr {
414 unsigned int flags;
415 union {
416 struct snd_pcm_mmap_status status;
417 unsigned char reserved[64];
418 } s;
419 union {
420 struct snd_pcm_mmap_control control;
421 unsigned char reserved[64];
422 } c;
425 struct snd_xferi {
426 snd_pcm_sframes_t result;
427 void __user *buf;
428 snd_pcm_uframes_t frames;
431 struct snd_xfern {
432 snd_pcm_sframes_t result;
433 void __user * __user *bufs;
434 snd_pcm_uframes_t frames;
437 enum {
438 SNDRV_PCM_TSTAMP_TYPE_GETTIMEOFDAY = 0, /* gettimeofday equivalent */
439 SNDRV_PCM_TSTAMP_TYPE_MONOTONIC, /* posix_clock_monotonic equivalent */
440 SNDRV_PCM_TSTAMP_TYPE_LAST = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC,
443 enum {
444 SNDRV_PCM_IOCTL_PVERSION = _IOR('A', 0x00, int),
445 SNDRV_PCM_IOCTL_INFO = _IOR('A', 0x01, struct snd_pcm_info),
446 SNDRV_PCM_IOCTL_TSTAMP = _IOW('A', 0x02, int),
447 SNDRV_PCM_IOCTL_TTSTAMP = _IOW('A', 0x03, int),
448 SNDRV_PCM_IOCTL_HW_REFINE = _IOWR('A', 0x10, struct snd_pcm_hw_params),
449 SNDRV_PCM_IOCTL_HW_PARAMS = _IOWR('A', 0x11, struct snd_pcm_hw_params),
450 SNDRV_PCM_IOCTL_HW_FREE = _IO('A', 0x12),
451 SNDRV_PCM_IOCTL_SW_PARAMS = _IOWR('A', 0x13, struct snd_pcm_sw_params),
452 SNDRV_PCM_IOCTL_STATUS = _IOR('A', 0x20, struct snd_pcm_status),
453 SNDRV_PCM_IOCTL_DELAY = _IOR('A', 0x21, snd_pcm_sframes_t),
454 SNDRV_PCM_IOCTL_HWSYNC = _IO('A', 0x22),
455 SNDRV_PCM_IOCTL_SYNC_PTR = _IOWR('A', 0x23, struct snd_pcm_sync_ptr),
456 SNDRV_PCM_IOCTL_CHANNEL_INFO = _IOR('A', 0x32, struct snd_pcm_channel_info),
457 SNDRV_PCM_IOCTL_PREPARE = _IO('A', 0x40),
458 SNDRV_PCM_IOCTL_RESET = _IO('A', 0x41),
459 SNDRV_PCM_IOCTL_START = _IO('A', 0x42),
460 SNDRV_PCM_IOCTL_DROP = _IO('A', 0x43),
461 SNDRV_PCM_IOCTL_DRAIN = _IO('A', 0x44),
462 SNDRV_PCM_IOCTL_PAUSE = _IOW('A', 0x45, int),
463 SNDRV_PCM_IOCTL_REWIND = _IOW('A', 0x46, snd_pcm_uframes_t),
464 SNDRV_PCM_IOCTL_RESUME = _IO('A', 0x47),
465 SNDRV_PCM_IOCTL_XRUN = _IO('A', 0x48),
466 SNDRV_PCM_IOCTL_FORWARD = _IOW('A', 0x49, snd_pcm_uframes_t),
467 SNDRV_PCM_IOCTL_WRITEI_FRAMES = _IOW('A', 0x50, struct snd_xferi),
468 SNDRV_PCM_IOCTL_READI_FRAMES = _IOR('A', 0x51, struct snd_xferi),
469 SNDRV_PCM_IOCTL_WRITEN_FRAMES = _IOW('A', 0x52, struct snd_xfern),
470 SNDRV_PCM_IOCTL_READN_FRAMES = _IOR('A', 0x53, struct snd_xfern),
471 SNDRV_PCM_IOCTL_LINK = _IOW('A', 0x60, int),
472 SNDRV_PCM_IOCTL_UNLINK = _IO('A', 0x61),
475 /* Trick to make alsa-lib/acinclude.m4 happy */
476 #define SNDRV_PCM_IOCTL_REWIND SNDRV_PCM_IOCTL_REWIND
478 /*****************************************************************************
480 * MIDI v1.0 interface *
482 *****************************************************************************/
485 * Raw MIDI section - /dev/snd/midi??
488 #define SNDRV_RAWMIDI_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 0)
490 enum {
491 SNDRV_RAWMIDI_STREAM_OUTPUT = 0,
492 SNDRV_RAWMIDI_STREAM_INPUT,
493 SNDRV_RAWMIDI_STREAM_LAST = SNDRV_RAWMIDI_STREAM_INPUT,
496 #define SNDRV_RAWMIDI_INFO_OUTPUT 0x00000001
497 #define SNDRV_RAWMIDI_INFO_INPUT 0x00000002
498 #define SNDRV_RAWMIDI_INFO_DUPLEX 0x00000004
500 struct snd_rawmidi_info {
501 unsigned int device; /* RO/WR (control): device number */
502 unsigned int subdevice; /* RO/WR (control): subdevice number */
503 int stream; /* WR: stream */
504 int card; /* R: card number */
505 unsigned int flags; /* SNDRV_RAWMIDI_INFO_XXXX */
506 unsigned char id[64]; /* ID (user selectable) */
507 unsigned char name[80]; /* name of device */
508 unsigned char subname[32]; /* name of active or selected subdevice */
509 unsigned int subdevices_count;
510 unsigned int subdevices_avail;
511 unsigned char reserved[64]; /* reserved for future use */
514 struct snd_rawmidi_params {
515 int stream;
516 size_t buffer_size; /* queue size in bytes */
517 size_t avail_min; /* minimum avail bytes for wakeup */
518 unsigned int no_active_sensing: 1; /* do not send active sensing byte in close() */
519 unsigned char reserved[16]; /* reserved for future use */
522 struct snd_rawmidi_status {
523 int stream;
524 struct timespec tstamp; /* Timestamp */
525 size_t avail; /* available bytes */
526 size_t xruns; /* count of overruns since last status (in bytes) */
527 unsigned char reserved[16]; /* reserved for future use */
530 enum {
531 SNDRV_RAWMIDI_IOCTL_PVERSION = _IOR('W', 0x00, int),
532 SNDRV_RAWMIDI_IOCTL_INFO = _IOR('W', 0x01, struct snd_rawmidi_info),
533 SNDRV_RAWMIDI_IOCTL_PARAMS = _IOWR('W', 0x10, struct snd_rawmidi_params),
534 SNDRV_RAWMIDI_IOCTL_STATUS = _IOWR('W', 0x20, struct snd_rawmidi_status),
535 SNDRV_RAWMIDI_IOCTL_DROP = _IOW('W', 0x30, int),
536 SNDRV_RAWMIDI_IOCTL_DRAIN = _IOW('W', 0x31, int),
540 * Timer section - /dev/snd/timer
543 #define SNDRV_TIMER_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 5)
545 enum {
546 SNDRV_TIMER_CLASS_NONE = -1,
547 SNDRV_TIMER_CLASS_SLAVE = 0,
548 SNDRV_TIMER_CLASS_GLOBAL,
549 SNDRV_TIMER_CLASS_CARD,
550 SNDRV_TIMER_CLASS_PCM,
551 SNDRV_TIMER_CLASS_LAST = SNDRV_TIMER_CLASS_PCM,
554 /* slave timer classes */
555 enum {
556 SNDRV_TIMER_SCLASS_NONE = 0,
557 SNDRV_TIMER_SCLASS_APPLICATION,
558 SNDRV_TIMER_SCLASS_SEQUENCER, /* alias */
559 SNDRV_TIMER_SCLASS_OSS_SEQUENCER, /* alias */
560 SNDRV_TIMER_SCLASS_LAST = SNDRV_TIMER_SCLASS_OSS_SEQUENCER,
563 /* global timers (device member) */
564 #define SNDRV_TIMER_GLOBAL_SYSTEM 0
565 #define SNDRV_TIMER_GLOBAL_RTC 1
566 #define SNDRV_TIMER_GLOBAL_HPET 2
568 /* info flags */
569 #define SNDRV_TIMER_FLG_SLAVE (1<<0) /* cannot be controlled */
571 struct snd_timer_id {
572 int dev_class;
573 int dev_sclass;
574 int card;
575 int device;
576 int subdevice;
579 struct snd_timer_ginfo {
580 struct snd_timer_id tid; /* requested timer ID */
581 unsigned int flags; /* timer flags - SNDRV_TIMER_FLG_* */
582 int card; /* card number */
583 unsigned char id[64]; /* timer identification */
584 unsigned char name[80]; /* timer name */
585 unsigned long reserved0; /* reserved for future use */
586 unsigned long resolution; /* average period resolution in ns */
587 unsigned long resolution_min; /* minimal period resolution in ns */
588 unsigned long resolution_max; /* maximal period resolution in ns */
589 unsigned int clients; /* active timer clients */
590 unsigned char reserved[32];
593 struct snd_timer_gparams {
594 struct snd_timer_id tid; /* requested timer ID */
595 unsigned long period_num; /* requested precise period duration (in seconds) - numerator */
596 unsigned long period_den; /* requested precise period duration (in seconds) - denominator */
597 unsigned char reserved[32];
600 struct snd_timer_gstatus {
601 struct snd_timer_id tid; /* requested timer ID */
602 unsigned long resolution; /* current period resolution in ns */
603 unsigned long resolution_num; /* precise current period resolution (in seconds) - numerator */
604 unsigned long resolution_den; /* precise current period resolution (in seconds) - denominator */
605 unsigned char reserved[32];
608 struct snd_timer_select {
609 struct snd_timer_id id; /* bind to timer ID */
610 unsigned char reserved[32]; /* reserved */
613 struct snd_timer_info {
614 unsigned int flags; /* timer flags - SNDRV_TIMER_FLG_* */
615 int card; /* card number */
616 unsigned char id[64]; /* timer identificator */
617 unsigned char name[80]; /* timer name */
618 unsigned long reserved0; /* reserved for future use */
619 unsigned long resolution; /* average period resolution in ns */
620 unsigned char reserved[64]; /* reserved */
623 #define SNDRV_TIMER_PSFLG_AUTO (1<<0) /* auto start, otherwise one-shot */
624 #define SNDRV_TIMER_PSFLG_EXCLUSIVE (1<<1) /* exclusive use, precise start/stop/pause/continue */
625 #define SNDRV_TIMER_PSFLG_EARLY_EVENT (1<<2) /* write early event to the poll queue */
627 struct snd_timer_params {
628 unsigned int flags; /* flags - SNDRV_MIXER_PSFLG_* */
629 unsigned int ticks; /* requested resolution in ticks */
630 unsigned int queue_size; /* total size of queue (32-1024) */
631 unsigned int reserved0; /* reserved, was: failure locations */
632 unsigned int filter; /* event filter (bitmask of SNDRV_TIMER_EVENT_*) */
633 unsigned char reserved[60]; /* reserved */
636 struct snd_timer_status {
637 struct timespec tstamp; /* Timestamp - last update */
638 unsigned int resolution; /* current period resolution in ns */
639 unsigned int lost; /* counter of master tick lost */
640 unsigned int overrun; /* count of read queue overruns */
641 unsigned int queue; /* used queue size */
642 unsigned char reserved[64]; /* reserved */
645 enum {
646 SNDRV_TIMER_IOCTL_PVERSION = _IOR('T', 0x00, int),
647 SNDRV_TIMER_IOCTL_NEXT_DEVICE = _IOWR('T', 0x01, struct snd_timer_id),
648 SNDRV_TIMER_IOCTL_TREAD = _IOW('T', 0x02, int),
649 SNDRV_TIMER_IOCTL_GINFO = _IOWR('T', 0x03, struct snd_timer_ginfo),
650 SNDRV_TIMER_IOCTL_GPARAMS = _IOW('T', 0x04, struct snd_timer_gparams),
651 SNDRV_TIMER_IOCTL_GSTATUS = _IOWR('T', 0x05, struct snd_timer_gstatus),
652 SNDRV_TIMER_IOCTL_SELECT = _IOW('T', 0x10, struct snd_timer_select),
653 SNDRV_TIMER_IOCTL_INFO = _IOR('T', 0x11, struct snd_timer_info),
654 SNDRV_TIMER_IOCTL_PARAMS = _IOW('T', 0x12, struct snd_timer_params),
655 SNDRV_TIMER_IOCTL_STATUS = _IOR('T', 0x14, struct snd_timer_status),
656 /* The following four ioctls are changed since 1.0.9 due to confliction */
657 SNDRV_TIMER_IOCTL_START = _IO('T', 0xa0),
658 SNDRV_TIMER_IOCTL_STOP = _IO('T', 0xa1),
659 SNDRV_TIMER_IOCTL_CONTINUE = _IO('T', 0xa2),
660 SNDRV_TIMER_IOCTL_PAUSE = _IO('T', 0xa3),
663 struct snd_timer_read {
664 unsigned int resolution;
665 unsigned int ticks;
668 enum {
669 SNDRV_TIMER_EVENT_RESOLUTION = 0, /* val = resolution in ns */
670 SNDRV_TIMER_EVENT_TICK, /* val = ticks */
671 SNDRV_TIMER_EVENT_START, /* val = resolution in ns */
672 SNDRV_TIMER_EVENT_STOP, /* val = 0 */
673 SNDRV_TIMER_EVENT_CONTINUE, /* val = resolution in ns */
674 SNDRV_TIMER_EVENT_PAUSE, /* val = 0 */
675 SNDRV_TIMER_EVENT_EARLY, /* val = 0, early event */
676 SNDRV_TIMER_EVENT_SUSPEND, /* val = 0 */
677 SNDRV_TIMER_EVENT_RESUME, /* val = resolution in ns */
678 /* master timer events for slave timer instances */
679 SNDRV_TIMER_EVENT_MSTART = SNDRV_TIMER_EVENT_START + 10,
680 SNDRV_TIMER_EVENT_MSTOP = SNDRV_TIMER_EVENT_STOP + 10,
681 SNDRV_TIMER_EVENT_MCONTINUE = SNDRV_TIMER_EVENT_CONTINUE + 10,
682 SNDRV_TIMER_EVENT_MPAUSE = SNDRV_TIMER_EVENT_PAUSE + 10,
683 SNDRV_TIMER_EVENT_MSUSPEND = SNDRV_TIMER_EVENT_SUSPEND + 10,
684 SNDRV_TIMER_EVENT_MRESUME = SNDRV_TIMER_EVENT_RESUME + 10,
687 struct snd_timer_tread {
688 int event;
689 struct timespec tstamp;
690 unsigned int val;
693 /****************************************************************************
695 * Section for driver control interface - /dev/snd/control? *
697 ****************************************************************************/
699 #define SNDRV_CTL_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 5)
701 struct snd_ctl_card_info {
702 int card; /* card number */
703 int pad; /* reserved for future (was type) */
704 unsigned char id[16]; /* ID of card (user selectable) */
705 unsigned char driver[16]; /* Driver name */
706 unsigned char name[32]; /* Short name of soundcard */
707 unsigned char longname[80]; /* name + info text about soundcard */
708 unsigned char reserved_[16]; /* reserved for future (was ID of mixer) */
709 unsigned char mixername[80]; /* visual mixer identification */
710 unsigned char components[80]; /* card components / fine identification, delimited with one space (AC97 etc..) */
711 unsigned char reserved[48]; /* reserved for future */
714 typedef int __bitwise snd_ctl_elem_type_t;
715 #define SNDRV_CTL_ELEM_TYPE_NONE ((__force snd_ctl_elem_type_t) 0) /* invalid */
716 #define SNDRV_CTL_ELEM_TYPE_BOOLEAN ((__force snd_ctl_elem_type_t) 1) /* boolean type */
717 #define SNDRV_CTL_ELEM_TYPE_INTEGER ((__force snd_ctl_elem_type_t) 2) /* integer type */
718 #define SNDRV_CTL_ELEM_TYPE_ENUMERATED ((__force snd_ctl_elem_type_t) 3) /* enumerated type */
719 #define SNDRV_CTL_ELEM_TYPE_BYTES ((__force snd_ctl_elem_type_t) 4) /* byte array */
720 #define SNDRV_CTL_ELEM_TYPE_IEC958 ((__force snd_ctl_elem_type_t) 5) /* IEC958 (S/PDIF) setup */
721 #define SNDRV_CTL_ELEM_TYPE_INTEGER64 ((__force snd_ctl_elem_type_t) 6) /* 64-bit integer type */
722 #define SNDRV_CTL_ELEM_TYPE_LAST SNDRV_CTL_ELEM_TYPE_INTEGER64
724 typedef int __bitwise snd_ctl_elem_iface_t;
725 #define SNDRV_CTL_ELEM_IFACE_CARD ((__force snd_ctl_elem_iface_t) 0) /* global control */
726 #define SNDRV_CTL_ELEM_IFACE_HWDEP ((__force snd_ctl_elem_iface_t) 1) /* hardware dependent device */
727 #define SNDRV_CTL_ELEM_IFACE_MIXER ((__force snd_ctl_elem_iface_t) 2) /* virtual mixer device */
728 #define SNDRV_CTL_ELEM_IFACE_PCM ((__force snd_ctl_elem_iface_t) 3) /* PCM device */
729 #define SNDRV_CTL_ELEM_IFACE_RAWMIDI ((__force snd_ctl_elem_iface_t) 4) /* RawMidi device */
730 #define SNDRV_CTL_ELEM_IFACE_TIMER ((__force snd_ctl_elem_iface_t) 5) /* timer device */
731 #define SNDRV_CTL_ELEM_IFACE_SEQUENCER ((__force snd_ctl_elem_iface_t) 6) /* sequencer client */
732 #define SNDRV_CTL_ELEM_IFACE_LAST SNDRV_CTL_ELEM_IFACE_SEQUENCER
734 #define SNDRV_CTL_ELEM_ACCESS_READ (1<<0)
735 #define SNDRV_CTL_ELEM_ACCESS_WRITE (1<<1)
736 #define SNDRV_CTL_ELEM_ACCESS_READWRITE (SNDRV_CTL_ELEM_ACCESS_READ|SNDRV_CTL_ELEM_ACCESS_WRITE)
737 #define SNDRV_CTL_ELEM_ACCESS_VOLATILE (1<<2) /* control value may be changed without a notification */
738 #define SNDRV_CTL_ELEM_ACCESS_TIMESTAMP (1<<3) /* when was control changed */
739 #define SNDRV_CTL_ELEM_ACCESS_TLV_READ (1<<4) /* TLV read is possible */
740 #define SNDRV_CTL_ELEM_ACCESS_TLV_WRITE (1<<5) /* TLV write is possible */
741 #define SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE (SNDRV_CTL_ELEM_ACCESS_TLV_READ|SNDRV_CTL_ELEM_ACCESS_TLV_WRITE)
742 #define SNDRV_CTL_ELEM_ACCESS_TLV_COMMAND (1<<6) /* TLV command is possible */
743 #define SNDRV_CTL_ELEM_ACCESS_INACTIVE (1<<8) /* control does actually nothing, but may be updated */
744 #define SNDRV_CTL_ELEM_ACCESS_LOCK (1<<9) /* write lock */
745 #define SNDRV_CTL_ELEM_ACCESS_OWNER (1<<10) /* write lock owner */
746 #define SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK (1<<28) /* kernel use a TLV callback */
747 #define SNDRV_CTL_ELEM_ACCESS_USER (1<<29) /* user space element */
748 /* bits 30 and 31 are obsoleted (for indirect access) */
750 /* for further details see the ACPI and PCI power management specification */
751 #define SNDRV_CTL_POWER_D0 0x0000 /* full On */
752 #define SNDRV_CTL_POWER_D1 0x0100 /* partial On */
753 #define SNDRV_CTL_POWER_D2 0x0200 /* partial On */
754 #define SNDRV_CTL_POWER_D3 0x0300 /* Off */
755 #define SNDRV_CTL_POWER_D3hot (SNDRV_CTL_POWER_D3|0x0000) /* Off, with power */
756 #define SNDRV_CTL_POWER_D3cold (SNDRV_CTL_POWER_D3|0x0001) /* Off, without power */
758 struct snd_ctl_elem_id {
759 unsigned int numid; /* numeric identifier, zero = invalid */
760 snd_ctl_elem_iface_t iface; /* interface identifier */
761 unsigned int device; /* device/client number */
762 unsigned int subdevice; /* subdevice (substream) number */
763 unsigned char name[44]; /* ASCII name of item */
764 unsigned int index; /* index of item */
767 struct snd_ctl_elem_list {
768 unsigned int offset; /* W: first element ID to get */
769 unsigned int space; /* W: count of element IDs to get */
770 unsigned int used; /* R: count of element IDs set */
771 unsigned int count; /* R: count of all elements */
772 struct snd_ctl_elem_id __user *pids; /* R: IDs */
773 unsigned char reserved[50];
776 struct snd_ctl_elem_info {
777 struct snd_ctl_elem_id id; /* W: element ID */
778 snd_ctl_elem_type_t type; /* R: value type - SNDRV_CTL_ELEM_TYPE_* */
779 unsigned int access; /* R: value access (bitmask) - SNDRV_CTL_ELEM_ACCESS_* */
780 unsigned int count; /* count of values */
781 pid_t owner; /* owner's PID of this control */
782 union {
783 struct {
784 long min; /* R: minimum value */
785 long max; /* R: maximum value */
786 long step; /* R: step (0 variable) */
787 } integer;
788 struct {
789 long long min; /* R: minimum value */
790 long long max; /* R: maximum value */
791 long long step; /* R: step (0 variable) */
792 } integer64;
793 struct {
794 unsigned int items; /* R: number of items */
795 unsigned int item; /* W: item number */
796 char name[64]; /* R: value name */
797 } enumerated;
798 unsigned char reserved[128];
799 } value;
800 union {
801 unsigned short d[4]; /* dimensions */
802 unsigned short *d_ptr; /* indirect - obsoleted */
803 } dimen;
804 unsigned char reserved[64-4*sizeof(unsigned short)];
807 struct snd_ctl_elem_value {
808 struct snd_ctl_elem_id id; /* W: element ID */
809 unsigned int indirect: 1; /* W: indirect access - obsoleted */
810 union {
811 union {
812 long value[128];
813 long *value_ptr; /* obsoleted */
814 } integer;
815 union {
816 long long value[64];
817 long long *value_ptr; /* obsoleted */
818 } integer64;
819 union {
820 unsigned int item[128];
821 unsigned int *item_ptr; /* obsoleted */
822 } enumerated;
823 union {
824 unsigned char data[512];
825 unsigned char *data_ptr; /* obsoleted */
826 } bytes;
827 struct snd_aes_iec958 iec958;
828 } value; /* RO */
829 struct timespec tstamp;
830 unsigned char reserved[128-sizeof(struct timespec)];
833 struct snd_ctl_tlv {
834 unsigned int numid; /* control element numeric identification */
835 unsigned int length; /* in bytes aligned to 4 */
836 unsigned int tlv[0]; /* first TLV */
839 enum {
840 SNDRV_CTL_IOCTL_PVERSION = _IOR('U', 0x00, int),
841 SNDRV_CTL_IOCTL_CARD_INFO = _IOR('U', 0x01, struct snd_ctl_card_info),
842 SNDRV_CTL_IOCTL_ELEM_LIST = _IOWR('U', 0x10, struct snd_ctl_elem_list),
843 SNDRV_CTL_IOCTL_ELEM_INFO = _IOWR('U', 0x11, struct snd_ctl_elem_info),
844 SNDRV_CTL_IOCTL_ELEM_READ = _IOWR('U', 0x12, struct snd_ctl_elem_value),
845 SNDRV_CTL_IOCTL_ELEM_WRITE = _IOWR('U', 0x13, struct snd_ctl_elem_value),
846 SNDRV_CTL_IOCTL_ELEM_LOCK = _IOW('U', 0x14, struct snd_ctl_elem_id),
847 SNDRV_CTL_IOCTL_ELEM_UNLOCK = _IOW('U', 0x15, struct snd_ctl_elem_id),
848 SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS = _IOWR('U', 0x16, int),
849 SNDRV_CTL_IOCTL_ELEM_ADD = _IOWR('U', 0x17, struct snd_ctl_elem_info),
850 SNDRV_CTL_IOCTL_ELEM_REPLACE = _IOWR('U', 0x18, struct snd_ctl_elem_info),
851 SNDRV_CTL_IOCTL_ELEM_REMOVE = _IOWR('U', 0x19, struct snd_ctl_elem_id),
852 SNDRV_CTL_IOCTL_TLV_READ = _IOWR('U', 0x1a, struct snd_ctl_tlv),
853 SNDRV_CTL_IOCTL_TLV_WRITE = _IOWR('U', 0x1b, struct snd_ctl_tlv),
854 SNDRV_CTL_IOCTL_TLV_COMMAND = _IOWR('U', 0x1c, struct snd_ctl_tlv),
855 SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE = _IOWR('U', 0x20, int),
856 SNDRV_CTL_IOCTL_HWDEP_INFO = _IOR('U', 0x21, struct snd_hwdep_info),
857 SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE = _IOR('U', 0x30, int),
858 SNDRV_CTL_IOCTL_PCM_INFO = _IOWR('U', 0x31, struct snd_pcm_info),
859 SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE = _IOW('U', 0x32, int),
860 SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE = _IOWR('U', 0x40, int),
861 SNDRV_CTL_IOCTL_RAWMIDI_INFO = _IOWR('U', 0x41, struct snd_rawmidi_info),
862 SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE = _IOW('U', 0x42, int),
863 SNDRV_CTL_IOCTL_POWER = _IOWR('U', 0xd0, int),
864 SNDRV_CTL_IOCTL_POWER_STATE = _IOR('U', 0xd1, int),
868 * Read interface.
871 enum sndrv_ctl_event_type {
872 SNDRV_CTL_EVENT_ELEM = 0,
873 SNDRV_CTL_EVENT_LAST = SNDRV_CTL_EVENT_ELEM,
876 #define SNDRV_CTL_EVENT_MASK_VALUE (1<<0) /* element value was changed */
877 #define SNDRV_CTL_EVENT_MASK_INFO (1<<1) /* element info was changed */
878 #define SNDRV_CTL_EVENT_MASK_ADD (1<<2) /* element was added */
879 #define SNDRV_CTL_EVENT_MASK_TLV (1<<3) /* element TLV tree was changed */
880 #define SNDRV_CTL_EVENT_MASK_REMOVE (~0U) /* element was removed */
882 struct snd_ctl_event {
883 int type; /* event type - SNDRV_CTL_EVENT_* */
884 union {
885 struct {
886 unsigned int mask;
887 struct snd_ctl_elem_id id;
888 } elem;
889 unsigned char data8[60];
890 } data;
894 * Control names
897 #define SNDRV_CTL_NAME_NONE ""
898 #define SNDRV_CTL_NAME_PLAYBACK "Playback "
899 #define SNDRV_CTL_NAME_CAPTURE "Capture "
901 #define SNDRV_CTL_NAME_IEC958_NONE ""
902 #define SNDRV_CTL_NAME_IEC958_SWITCH "Switch"
903 #define SNDRV_CTL_NAME_IEC958_VOLUME "Volume"
904 #define SNDRV_CTL_NAME_IEC958_DEFAULT "Default"
905 #define SNDRV_CTL_NAME_IEC958_MASK "Mask"
906 #define SNDRV_CTL_NAME_IEC958_CON_MASK "Con Mask"
907 #define SNDRV_CTL_NAME_IEC958_PRO_MASK "Pro Mask"
908 #define SNDRV_CTL_NAME_IEC958_PCM_STREAM "PCM Stream"
909 #define SNDRV_CTL_NAME_IEC958(expl,direction,what) "IEC958 " expl SNDRV_CTL_NAME_##direction SNDRV_CTL_NAME_IEC958_##what
915 struct snd_xferv {
916 const struct iovec *vector;
917 unsigned long count;
920 enum {
921 SNDRV_IOCTL_READV = _IOW('K', 0x00, struct snd_xferv),
922 SNDRV_IOCTL_WRITEV = _IOW('K', 0x01, struct snd_xferv),
925 #endif /* __SOUND_ASOUND_H */