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TOMOYO Linux Cross Reference
Linux/include/uapi/sound/asound.h

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Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  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 _UAPI__SOUND_ASOUND_H
 24 #define _UAPI__SOUND_ASOUND_H
 25 
 26 #include <linux/types.h>
 27 
 28 
 29 /*
 30  *  protocol version
 31  */
 32 
 33 #define SNDRV_PROTOCOL_VERSION(major, minor, subminor) (((major)<<16)|((minor)<<8)|(subminor))
 34 #define SNDRV_PROTOCOL_MAJOR(version) (((version)>>16)&0xffff)
 35 #define SNDRV_PROTOCOL_MINOR(version) (((version)>>8)&0xff)
 36 #define SNDRV_PROTOCOL_MICRO(version) ((version)&0xff)
 37 #define SNDRV_PROTOCOL_INCOMPATIBLE(kversion, uversion) \
 38         (SNDRV_PROTOCOL_MAJOR(kversion) != SNDRV_PROTOCOL_MAJOR(uversion) || \
 39          (SNDRV_PROTOCOL_MAJOR(kversion) == SNDRV_PROTOCOL_MAJOR(uversion) && \
 40            SNDRV_PROTOCOL_MINOR(kversion) != SNDRV_PROTOCOL_MINOR(uversion)))
 41 
 42 /****************************************************************************
 43  *                                                                          *
 44  *        Digital audio interface                                           *
 45  *                                                                          *
 46  ****************************************************************************/
 47 
 48 struct snd_aes_iec958 {
 49         unsigned char status[24];       /* AES/IEC958 channel status bits */
 50         unsigned char subcode[147];     /* AES/IEC958 subcode bits */
 51         unsigned char pad;              /* nothing */
 52         unsigned char dig_subframe[4];  /* AES/IEC958 subframe bits */
 53 };
 54 
 55 /****************************************************************************
 56  *                                                                          *
 57  *        CEA-861 Audio InfoFrame. Used in HDMI and DisplayPort             *
 58  *                                                                          *
 59  ****************************************************************************/
 60 
 61 struct snd_cea_861_aud_if {
 62         unsigned char db1_ct_cc; /* coding type and channel count */
 63         unsigned char db2_sf_ss; /* sample frequency and size */
 64         unsigned char db3; /* not used, all zeros */
 65         unsigned char db4_ca; /* channel allocation code */
 66         unsigned char db5_dminh_lsv; /* downmix inhibit & level-shit values */
 67 };
 68 
 69 /****************************************************************************
 70  *                                                                          *
 71  *      Section for driver hardware dependent interface - /dev/snd/hw?      *
 72  *                                                                          *
 73  ****************************************************************************/
 74 
 75 #define SNDRV_HWDEP_VERSION             SNDRV_PROTOCOL_VERSION(1, 0, 1)
 76 
 77 enum {
 78         SNDRV_HWDEP_IFACE_OPL2 = 0,
 79         SNDRV_HWDEP_IFACE_OPL3,
 80         SNDRV_HWDEP_IFACE_OPL4,
 81         SNDRV_HWDEP_IFACE_SB16CSP,      /* Creative Signal Processor */
 82         SNDRV_HWDEP_IFACE_EMU10K1,      /* FX8010 processor in EMU10K1 chip */
 83         SNDRV_HWDEP_IFACE_YSS225,       /* Yamaha FX processor */
 84         SNDRV_HWDEP_IFACE_ICS2115,      /* Wavetable synth */
 85         SNDRV_HWDEP_IFACE_SSCAPE,       /* Ensoniq SoundScape ISA card (MC68EC000) */
 86         SNDRV_HWDEP_IFACE_VX,           /* Digigram VX cards */
 87         SNDRV_HWDEP_IFACE_MIXART,       /* Digigram miXart cards */
 88         SNDRV_HWDEP_IFACE_USX2Y,        /* Tascam US122, US224 & US428 usb */
 89         SNDRV_HWDEP_IFACE_EMUX_WAVETABLE, /* EmuX wavetable */  
 90         SNDRV_HWDEP_IFACE_BLUETOOTH,    /* Bluetooth audio */
 91         SNDRV_HWDEP_IFACE_USX2Y_PCM,    /* Tascam US122, US224 & US428 rawusb pcm */
 92         SNDRV_HWDEP_IFACE_PCXHR,        /* Digigram PCXHR */
 93         SNDRV_HWDEP_IFACE_SB_RC,        /* SB Extigy/Audigy2NX remote control */
 94         SNDRV_HWDEP_IFACE_HDA,          /* HD-audio */
 95         SNDRV_HWDEP_IFACE_USB_STREAM,   /* direct access to usb stream */
 96         SNDRV_HWDEP_IFACE_FW_DICE,      /* TC DICE FireWire device */
 97 
 98         /* Don't forget to change the following: */
 99         SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_FW_DICE
100 };
101 
102 struct snd_hwdep_info {
103         unsigned int device;            /* WR: device number */
104         int card;                       /* R: card number */
105         unsigned char id[64];           /* ID (user selectable) */
106         unsigned char name[80];         /* hwdep name */
107         int iface;                      /* hwdep interface */
108         unsigned char reserved[64];     /* reserved for future */
109 };
110 
111 /* generic DSP loader */
112 struct snd_hwdep_dsp_status {
113         unsigned int version;           /* R: driver-specific version */
114         unsigned char id[32];           /* R: driver-specific ID string */
115         unsigned int num_dsps;          /* R: number of DSP images to transfer */
116         unsigned int dsp_loaded;        /* R: bit flags indicating the loaded DSPs */
117         unsigned int chip_ready;        /* R: 1 = initialization finished */
118         unsigned char reserved[16];     /* reserved for future use */
119 };
120 
121 struct snd_hwdep_dsp_image {
122         unsigned int index;             /* W: DSP index */
123         unsigned char name[64];         /* W: ID (e.g. file name) */
124         unsigned char __user *image;    /* W: binary image */
125         size_t length;                  /* W: size of image in bytes */
126         unsigned long driver_data;      /* W: driver-specific data */
127 };
128 
129 #define SNDRV_HWDEP_IOCTL_PVERSION      _IOR ('H', 0x00, int)
130 #define SNDRV_HWDEP_IOCTL_INFO          _IOR ('H', 0x01, struct snd_hwdep_info)
131 #define SNDRV_HWDEP_IOCTL_DSP_STATUS    _IOR('H', 0x02, struct snd_hwdep_dsp_status)
132 #define SNDRV_HWDEP_IOCTL_DSP_LOAD      _IOW('H', 0x03, struct snd_hwdep_dsp_image)
133 
134 /*****************************************************************************
135  *                                                                           *
136  *             Digital Audio (PCM) interface - /dev/snd/pcm??                *
137  *                                                                           *
138  *****************************************************************************/
139 
140 #define SNDRV_PCM_VERSION               SNDRV_PROTOCOL_VERSION(2, 0, 11)
141 
142 typedef unsigned long snd_pcm_uframes_t;
143 typedef signed long snd_pcm_sframes_t;
144 
145 enum {
146         SNDRV_PCM_CLASS_GENERIC = 0,    /* standard mono or stereo device */
147         SNDRV_PCM_CLASS_MULTI,          /* multichannel device */
148         SNDRV_PCM_CLASS_MODEM,          /* software modem class */
149         SNDRV_PCM_CLASS_DIGITIZER,      /* digitizer class */
150         /* Don't forget to change the following: */
151         SNDRV_PCM_CLASS_LAST = SNDRV_PCM_CLASS_DIGITIZER,
152 };
153 
154 enum {
155         SNDRV_PCM_SUBCLASS_GENERIC_MIX = 0, /* mono or stereo subdevices are mixed together */
156         SNDRV_PCM_SUBCLASS_MULTI_MIX,   /* multichannel subdevices are mixed together */
157         /* Don't forget to change the following: */
158         SNDRV_PCM_SUBCLASS_LAST = SNDRV_PCM_SUBCLASS_MULTI_MIX,
159 };
160 
161 enum {
162         SNDRV_PCM_STREAM_PLAYBACK = 0,
163         SNDRV_PCM_STREAM_CAPTURE,
164         SNDRV_PCM_STREAM_LAST = SNDRV_PCM_STREAM_CAPTURE,
165 };
166 
167 typedef int __bitwise snd_pcm_access_t;
168 #define SNDRV_PCM_ACCESS_MMAP_INTERLEAVED       ((__force snd_pcm_access_t) 0) /* interleaved mmap */
169 #define SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED    ((__force snd_pcm_access_t) 1) /* noninterleaved mmap */
170 #define SNDRV_PCM_ACCESS_MMAP_COMPLEX           ((__force snd_pcm_access_t) 2) /* complex mmap */
171 #define SNDRV_PCM_ACCESS_RW_INTERLEAVED         ((__force snd_pcm_access_t) 3) /* readi/writei */
172 #define SNDRV_PCM_ACCESS_RW_NONINTERLEAVED      ((__force snd_pcm_access_t) 4) /* readn/writen */
173 #define SNDRV_PCM_ACCESS_LAST           SNDRV_PCM_ACCESS_RW_NONINTERLEAVED
174 
175 typedef int __bitwise snd_pcm_format_t;
176 #define SNDRV_PCM_FORMAT_S8     ((__force snd_pcm_format_t) 0)
177 #define SNDRV_PCM_FORMAT_U8     ((__force snd_pcm_format_t) 1)
178 #define SNDRV_PCM_FORMAT_S16_LE ((__force snd_pcm_format_t) 2)
179 #define SNDRV_PCM_FORMAT_S16_BE ((__force snd_pcm_format_t) 3)
180 #define SNDRV_PCM_FORMAT_U16_LE ((__force snd_pcm_format_t) 4)
181 #define SNDRV_PCM_FORMAT_U16_BE ((__force snd_pcm_format_t) 5)
182 #define SNDRV_PCM_FORMAT_S24_LE ((__force snd_pcm_format_t) 6) /* low three bytes */
183 #define SNDRV_PCM_FORMAT_S24_BE ((__force snd_pcm_format_t) 7) /* low three bytes */
184 #define SNDRV_PCM_FORMAT_U24_LE ((__force snd_pcm_format_t) 8) /* low three bytes */
185 #define SNDRV_PCM_FORMAT_U24_BE ((__force snd_pcm_format_t) 9) /* low three bytes */
186 #define SNDRV_PCM_FORMAT_S32_LE ((__force snd_pcm_format_t) 10)
187 #define SNDRV_PCM_FORMAT_S32_BE ((__force snd_pcm_format_t) 11)
188 #define SNDRV_PCM_FORMAT_U32_LE ((__force snd_pcm_format_t) 12)
189 #define SNDRV_PCM_FORMAT_U32_BE ((__force snd_pcm_format_t) 13)
190 #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 */
191 #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 */
192 #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 */
193 #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 */
194 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE ((__force snd_pcm_format_t) 18) /* IEC-958 subframe, Little Endian */
195 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE ((__force snd_pcm_format_t) 19) /* IEC-958 subframe, Big Endian */
196 #define SNDRV_PCM_FORMAT_MU_LAW         ((__force snd_pcm_format_t) 20)
197 #define SNDRV_PCM_FORMAT_A_LAW          ((__force snd_pcm_format_t) 21)
198 #define SNDRV_PCM_FORMAT_IMA_ADPCM      ((__force snd_pcm_format_t) 22)
199 #define SNDRV_PCM_FORMAT_MPEG           ((__force snd_pcm_format_t) 23)
200 #define SNDRV_PCM_FORMAT_GSM            ((__force snd_pcm_format_t) 24)
201 #define SNDRV_PCM_FORMAT_SPECIAL        ((__force snd_pcm_format_t) 31)
202 #define SNDRV_PCM_FORMAT_S24_3LE        ((__force snd_pcm_format_t) 32) /* in three bytes */
203 #define SNDRV_PCM_FORMAT_S24_3BE        ((__force snd_pcm_format_t) 33) /* in three bytes */
204 #define SNDRV_PCM_FORMAT_U24_3LE        ((__force snd_pcm_format_t) 34) /* in three bytes */
205 #define SNDRV_PCM_FORMAT_U24_3BE        ((__force snd_pcm_format_t) 35) /* in three bytes */
206 #define SNDRV_PCM_FORMAT_S20_3LE        ((__force snd_pcm_format_t) 36) /* in three bytes */
207 #define SNDRV_PCM_FORMAT_S20_3BE        ((__force snd_pcm_format_t) 37) /* in three bytes */
208 #define SNDRV_PCM_FORMAT_U20_3LE        ((__force snd_pcm_format_t) 38) /* in three bytes */
209 #define SNDRV_PCM_FORMAT_U20_3BE        ((__force snd_pcm_format_t) 39) /* in three bytes */
210 #define SNDRV_PCM_FORMAT_S18_3LE        ((__force snd_pcm_format_t) 40) /* in three bytes */
211 #define SNDRV_PCM_FORMAT_S18_3BE        ((__force snd_pcm_format_t) 41) /* in three bytes */
212 #define SNDRV_PCM_FORMAT_U18_3LE        ((__force snd_pcm_format_t) 42) /* in three bytes */
213 #define SNDRV_PCM_FORMAT_U18_3BE        ((__force snd_pcm_format_t) 43) /* in three bytes */
214 #define SNDRV_PCM_FORMAT_G723_24        ((__force snd_pcm_format_t) 44) /* 8 samples in 3 bytes */
215 #define SNDRV_PCM_FORMAT_G723_24_1B     ((__force snd_pcm_format_t) 45) /* 1 sample in 1 byte */
216 #define SNDRV_PCM_FORMAT_G723_40        ((__force snd_pcm_format_t) 46) /* 8 Samples in 5 bytes */
217 #define SNDRV_PCM_FORMAT_G723_40_1B     ((__force snd_pcm_format_t) 47) /* 1 sample in 1 byte */
218 #define SNDRV_PCM_FORMAT_DSD_U8         ((__force snd_pcm_format_t) 48) /* DSD, 1-byte samples DSD (x8) */
219 #define SNDRV_PCM_FORMAT_DSD_U16_LE     ((__force snd_pcm_format_t) 49) /* DSD, 2-byte samples DSD (x16), little endian */
220 #define SNDRV_PCM_FORMAT_LAST           SNDRV_PCM_FORMAT_DSD_U16_LE
221 
222 #ifdef SNDRV_LITTLE_ENDIAN
223 #define SNDRV_PCM_FORMAT_S16            SNDRV_PCM_FORMAT_S16_LE
224 #define SNDRV_PCM_FORMAT_U16            SNDRV_PCM_FORMAT_U16_LE
225 #define SNDRV_PCM_FORMAT_S24            SNDRV_PCM_FORMAT_S24_LE
226 #define SNDRV_PCM_FORMAT_U24            SNDRV_PCM_FORMAT_U24_LE
227 #define SNDRV_PCM_FORMAT_S32            SNDRV_PCM_FORMAT_S32_LE
228 #define SNDRV_PCM_FORMAT_U32            SNDRV_PCM_FORMAT_U32_LE
229 #define SNDRV_PCM_FORMAT_FLOAT          SNDRV_PCM_FORMAT_FLOAT_LE
230 #define SNDRV_PCM_FORMAT_FLOAT64        SNDRV_PCM_FORMAT_FLOAT64_LE
231 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE
232 #endif
233 #ifdef SNDRV_BIG_ENDIAN
234 #define SNDRV_PCM_FORMAT_S16            SNDRV_PCM_FORMAT_S16_BE
235 #define SNDRV_PCM_FORMAT_U16            SNDRV_PCM_FORMAT_U16_BE
236 #define SNDRV_PCM_FORMAT_S24            SNDRV_PCM_FORMAT_S24_BE
237 #define SNDRV_PCM_FORMAT_U24            SNDRV_PCM_FORMAT_U24_BE
238 #define SNDRV_PCM_FORMAT_S32            SNDRV_PCM_FORMAT_S32_BE
239 #define SNDRV_PCM_FORMAT_U32            SNDRV_PCM_FORMAT_U32_BE
240 #define SNDRV_PCM_FORMAT_FLOAT          SNDRV_PCM_FORMAT_FLOAT_BE
241 #define SNDRV_PCM_FORMAT_FLOAT64        SNDRV_PCM_FORMAT_FLOAT64_BE
242 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE
243 #endif
244 
245 typedef int __bitwise snd_pcm_subformat_t;
246 #define SNDRV_PCM_SUBFORMAT_STD         ((__force snd_pcm_subformat_t) 0)
247 #define SNDRV_PCM_SUBFORMAT_LAST        SNDRV_PCM_SUBFORMAT_STD
248 
249 #define SNDRV_PCM_INFO_MMAP             0x00000001      /* hardware supports mmap */
250 #define SNDRV_PCM_INFO_MMAP_VALID       0x00000002      /* period data are valid during transfer */
251 #define SNDRV_PCM_INFO_DOUBLE           0x00000004      /* Double buffering needed for PCM start/stop */
252 #define SNDRV_PCM_INFO_BATCH            0x00000010      /* double buffering */
253 #define SNDRV_PCM_INFO_INTERLEAVED      0x00000100      /* channels are interleaved */
254 #define SNDRV_PCM_INFO_NONINTERLEAVED   0x00000200      /* channels are not interleaved */
255 #define SNDRV_PCM_INFO_COMPLEX          0x00000400      /* complex frame organization (mmap only) */
256 #define SNDRV_PCM_INFO_BLOCK_TRANSFER   0x00010000      /* hardware transfer block of samples */
257 #define SNDRV_PCM_INFO_OVERRANGE        0x00020000      /* hardware supports ADC (capture) overrange detection */
258 #define SNDRV_PCM_INFO_RESUME           0x00040000      /* hardware supports stream resume after suspend */
259 #define SNDRV_PCM_INFO_PAUSE            0x00080000      /* pause ioctl is supported */
260 #define SNDRV_PCM_INFO_HALF_DUPLEX      0x00100000      /* only half duplex */
261 #define SNDRV_PCM_INFO_JOINT_DUPLEX     0x00200000      /* playback and capture stream are somewhat correlated */
262 #define SNDRV_PCM_INFO_SYNC_START       0x00400000      /* pcm support some kind of sync go */
263 #define SNDRV_PCM_INFO_NO_PERIOD_WAKEUP 0x00800000      /* period wakeup can be disabled */
264 #define SNDRV_PCM_INFO_HAS_WALL_CLOCK   0x01000000      /* has audio wall clock for audio/system time sync */
265 #define SNDRV_PCM_INFO_FIFO_IN_FRAMES   0x80000000      /* internal kernel flag - FIFO size is in frames */
266 
267 typedef int __bitwise snd_pcm_state_t;
268 #define SNDRV_PCM_STATE_OPEN            ((__force snd_pcm_state_t) 0) /* stream is open */
269 #define SNDRV_PCM_STATE_SETUP           ((__force snd_pcm_state_t) 1) /* stream has a setup */
270 #define SNDRV_PCM_STATE_PREPARED        ((__force snd_pcm_state_t) 2) /* stream is ready to start */
271 #define SNDRV_PCM_STATE_RUNNING         ((__force snd_pcm_state_t) 3) /* stream is running */
272 #define SNDRV_PCM_STATE_XRUN            ((__force snd_pcm_state_t) 4) /* stream reached an xrun */
273 #define SNDRV_PCM_STATE_DRAINING        ((__force snd_pcm_state_t) 5) /* stream is draining */
274 #define SNDRV_PCM_STATE_PAUSED          ((__force snd_pcm_state_t) 6) /* stream is paused */
275 #define SNDRV_PCM_STATE_SUSPENDED       ((__force snd_pcm_state_t) 7) /* hardware is suspended */
276 #define SNDRV_PCM_STATE_DISCONNECTED    ((__force snd_pcm_state_t) 8) /* hardware is disconnected */
277 #define SNDRV_PCM_STATE_LAST            SNDRV_PCM_STATE_DISCONNECTED
278 
279 enum {
280         SNDRV_PCM_MMAP_OFFSET_DATA = 0x00000000,
281         SNDRV_PCM_MMAP_OFFSET_STATUS = 0x80000000,
282         SNDRV_PCM_MMAP_OFFSET_CONTROL = 0x81000000,
283 };
284 
285 union snd_pcm_sync_id {
286         unsigned char id[16];
287         unsigned short id16[8];
288         unsigned int id32[4];
289 };
290 
291 struct snd_pcm_info {
292         unsigned int device;            /* RO/WR (control): device number */
293         unsigned int subdevice;         /* RO/WR (control): subdevice number */
294         int stream;                     /* RO/WR (control): stream direction */
295         int card;                       /* R: card number */
296         unsigned char id[64];           /* ID (user selectable) */
297         unsigned char name[80];         /* name of this device */
298         unsigned char subname[32];      /* subdevice name */
299         int dev_class;                  /* SNDRV_PCM_CLASS_* */
300         int dev_subclass;               /* SNDRV_PCM_SUBCLASS_* */
301         unsigned int subdevices_count;
302         unsigned int subdevices_avail;
303         union snd_pcm_sync_id sync;     /* hardware synchronization ID */
304         unsigned char reserved[64];     /* reserved for future... */
305 };
306 
307 typedef int snd_pcm_hw_param_t;
308 #define SNDRV_PCM_HW_PARAM_ACCESS       0       /* Access type */
309 #define SNDRV_PCM_HW_PARAM_FORMAT       1       /* Format */
310 #define SNDRV_PCM_HW_PARAM_SUBFORMAT    2       /* Subformat */
311 #define SNDRV_PCM_HW_PARAM_FIRST_MASK   SNDRV_PCM_HW_PARAM_ACCESS
312 #define SNDRV_PCM_HW_PARAM_LAST_MASK    SNDRV_PCM_HW_PARAM_SUBFORMAT
313 
314 #define SNDRV_PCM_HW_PARAM_SAMPLE_BITS  8       /* Bits per sample */
315 #define SNDRV_PCM_HW_PARAM_FRAME_BITS   9       /* Bits per frame */
316 #define SNDRV_PCM_HW_PARAM_CHANNELS     10      /* Channels */
317 #define SNDRV_PCM_HW_PARAM_RATE         11      /* Approx rate */
318 #define SNDRV_PCM_HW_PARAM_PERIOD_TIME  12      /* Approx distance between
319                                                  * interrupts in us
320                                                  */
321 #define SNDRV_PCM_HW_PARAM_PERIOD_SIZE  13      /* Approx frames between
322                                                  * interrupts
323                                                  */
324 #define SNDRV_PCM_HW_PARAM_PERIOD_BYTES 14      /* Approx bytes between
325                                                  * interrupts
326                                                  */
327 #define SNDRV_PCM_HW_PARAM_PERIODS      15      /* Approx interrupts per
328                                                  * buffer
329                                                  */
330 #define SNDRV_PCM_HW_PARAM_BUFFER_TIME  16      /* Approx duration of buffer
331                                                  * in us
332                                                  */
333 #define SNDRV_PCM_HW_PARAM_BUFFER_SIZE  17      /* Size of buffer in frames */
334 #define SNDRV_PCM_HW_PARAM_BUFFER_BYTES 18      /* Size of buffer in bytes */
335 #define SNDRV_PCM_HW_PARAM_TICK_TIME    19      /* Approx tick duration in us */
336 #define SNDRV_PCM_HW_PARAM_FIRST_INTERVAL       SNDRV_PCM_HW_PARAM_SAMPLE_BITS
337 #define SNDRV_PCM_HW_PARAM_LAST_INTERVAL        SNDRV_PCM_HW_PARAM_TICK_TIME
338 
339 #define SNDRV_PCM_HW_PARAMS_NORESAMPLE  (1<<0)  /* avoid rate resampling */
340 #define SNDRV_PCM_HW_PARAMS_EXPORT_BUFFER       (1<<1)  /* export buffer */
341 #define SNDRV_PCM_HW_PARAMS_NO_PERIOD_WAKEUP    (1<<2)  /* disable period wakeups */
342 
343 struct snd_interval {
344         unsigned int min, max;
345         unsigned int openmin:1,
346                      openmax:1,
347                      integer:1,
348                      empty:1;
349 };
350 
351 #define SNDRV_MASK_MAX  256
352 
353 struct snd_mask {
354         __u32 bits[(SNDRV_MASK_MAX+31)/32];
355 };
356 
357 struct snd_pcm_hw_params {
358         unsigned int flags;
359         struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK - 
360                                SNDRV_PCM_HW_PARAM_FIRST_MASK + 1];
361         struct snd_mask mres[5];        /* reserved masks */
362         struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL -
363                                         SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];
364         struct snd_interval ires[9];    /* reserved intervals */
365         unsigned int rmask;             /* W: requested masks */
366         unsigned int cmask;             /* R: changed masks */
367         unsigned int info;              /* R: Info flags for returned setup */
368         unsigned int msbits;            /* R: used most significant bits */
369         unsigned int rate_num;          /* R: rate numerator */
370         unsigned int rate_den;          /* R: rate denominator */
371         snd_pcm_uframes_t fifo_size;    /* R: chip FIFO size in frames */
372         unsigned char reserved[64];     /* reserved for future */
373 };
374 
375 enum {
376         SNDRV_PCM_TSTAMP_NONE = 0,
377         SNDRV_PCM_TSTAMP_ENABLE,
378         SNDRV_PCM_TSTAMP_LAST = SNDRV_PCM_TSTAMP_ENABLE,
379 };
380 
381 struct snd_pcm_sw_params {
382         int tstamp_mode;                        /* timestamp mode */
383         unsigned int period_step;
384         unsigned int sleep_min;                 /* min ticks to sleep */
385         snd_pcm_uframes_t avail_min;            /* min avail frames for wakeup */
386         snd_pcm_uframes_t xfer_align;           /* obsolete: xfer size need to be a multiple */
387         snd_pcm_uframes_t start_threshold;      /* min hw_avail frames for automatic start */
388         snd_pcm_uframes_t stop_threshold;       /* min avail frames for automatic stop */
389         snd_pcm_uframes_t silence_threshold;    /* min distance from noise for silence filling */
390         snd_pcm_uframes_t silence_size;         /* silence block size */
391         snd_pcm_uframes_t boundary;             /* pointers wrap point */
392         unsigned char reserved[64];             /* reserved for future */
393 };
394 
395 struct snd_pcm_channel_info {
396         unsigned int channel;
397         __kernel_off_t offset;          /* mmap offset */
398         unsigned int first;             /* offset to first sample in bits */
399         unsigned int step;              /* samples distance in bits */
400 };
401 
402 struct snd_pcm_status {
403         snd_pcm_state_t state;          /* stream state */
404         struct timespec trigger_tstamp; /* time when stream was started/stopped/paused */
405         struct timespec tstamp;         /* reference timestamp */
406         snd_pcm_uframes_t appl_ptr;     /* appl ptr */
407         snd_pcm_uframes_t hw_ptr;       /* hw ptr */
408         snd_pcm_sframes_t delay;        /* current delay in frames */
409         snd_pcm_uframes_t avail;        /* number of frames available */
410         snd_pcm_uframes_t avail_max;    /* max frames available on hw since last status */
411         snd_pcm_uframes_t overrange;    /* count of ADC (capture) overrange detections from last status */
412         snd_pcm_state_t suspended_state; /* suspended stream state */
413         __u32 reserved_alignment;       /* must be filled with zero */
414         struct timespec audio_tstamp;   /* from sample counter or wall clock */
415         unsigned char reserved[56-sizeof(struct timespec)]; /* must be filled with zero */
416 };
417 
418 struct snd_pcm_mmap_status {
419         snd_pcm_state_t state;          /* RO: state - SNDRV_PCM_STATE_XXXX */
420         int pad1;                       /* Needed for 64 bit alignment */
421         snd_pcm_uframes_t hw_ptr;       /* RO: hw ptr (0...boundary-1) */
422         struct timespec tstamp;         /* Timestamp */
423         snd_pcm_state_t suspended_state; /* RO: suspended stream state */
424         struct timespec audio_tstamp;   /* from sample counter or wall clock */
425 };
426 
427 struct snd_pcm_mmap_control {
428         snd_pcm_uframes_t appl_ptr;     /* RW: appl ptr (0...boundary-1) */
429         snd_pcm_uframes_t avail_min;    /* RW: min available frames for wakeup */
430 };
431 
432 #define SNDRV_PCM_SYNC_PTR_HWSYNC       (1<<0)  /* execute hwsync */
433 #define SNDRV_PCM_SYNC_PTR_APPL         (1<<1)  /* get appl_ptr from driver (r/w op) */
434 #define SNDRV_PCM_SYNC_PTR_AVAIL_MIN    (1<<2)  /* get avail_min from driver */
435 
436 struct snd_pcm_sync_ptr {
437         unsigned int flags;
438         union {
439                 struct snd_pcm_mmap_status status;
440                 unsigned char reserved[64];
441         } s;
442         union {
443                 struct snd_pcm_mmap_control control;
444                 unsigned char reserved[64];
445         } c;
446 };
447 
448 struct snd_xferi {
449         snd_pcm_sframes_t result;
450         void __user *buf;
451         snd_pcm_uframes_t frames;
452 };
453 
454 struct snd_xfern {
455         snd_pcm_sframes_t result;
456         void __user * __user *bufs;
457         snd_pcm_uframes_t frames;
458 };
459 
460 enum {
461         SNDRV_PCM_TSTAMP_TYPE_GETTIMEOFDAY = 0, /* gettimeofday equivalent */
462         SNDRV_PCM_TSTAMP_TYPE_MONOTONIC,        /* posix_clock_monotonic equivalent */
463         SNDRV_PCM_TSTAMP_TYPE_LAST = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC,
464 };
465 
466 /* channel positions */
467 enum {
468         SNDRV_CHMAP_UNKNOWN = 0,
469         SNDRV_CHMAP_NA,         /* N/A, silent */
470         SNDRV_CHMAP_MONO,       /* mono stream */
471         /* this follows the alsa-lib mixer channel value + 3 */
472         SNDRV_CHMAP_FL,         /* front left */
473         SNDRV_CHMAP_FR,         /* front right */
474         SNDRV_CHMAP_RL,         /* rear left */
475         SNDRV_CHMAP_RR,         /* rear right */
476         SNDRV_CHMAP_FC,         /* front center */
477         SNDRV_CHMAP_LFE,        /* LFE */
478         SNDRV_CHMAP_SL,         /* side left */
479         SNDRV_CHMAP_SR,         /* side right */
480         SNDRV_CHMAP_RC,         /* rear center */
481         /* new definitions */
482         SNDRV_CHMAP_FLC,        /* front left center */
483         SNDRV_CHMAP_FRC,        /* front right center */
484         SNDRV_CHMAP_RLC,        /* rear left center */
485         SNDRV_CHMAP_RRC,        /* rear right center */
486         SNDRV_CHMAP_FLW,        /* front left wide */
487         SNDRV_CHMAP_FRW,        /* front right wide */
488         SNDRV_CHMAP_FLH,        /* front left high */
489         SNDRV_CHMAP_FCH,        /* front center high */
490         SNDRV_CHMAP_FRH,        /* front right high */
491         SNDRV_CHMAP_TC,         /* top center */
492         SNDRV_CHMAP_TFL,        /* top front left */
493         SNDRV_CHMAP_TFR,        /* top front right */
494         SNDRV_CHMAP_TFC,        /* top front center */
495         SNDRV_CHMAP_TRL,        /* top rear left */
496         SNDRV_CHMAP_TRR,        /* top rear right */
497         SNDRV_CHMAP_TRC,        /* top rear center */
498         /* new definitions for UAC2 */
499         SNDRV_CHMAP_TFLC,       /* top front left center */
500         SNDRV_CHMAP_TFRC,       /* top front right center */
501         SNDRV_CHMAP_TSL,        /* top side left */
502         SNDRV_CHMAP_TSR,        /* top side right */
503         SNDRV_CHMAP_LLFE,       /* left LFE */
504         SNDRV_CHMAP_RLFE,       /* right LFE */
505         SNDRV_CHMAP_BC,         /* bottom center */
506         SNDRV_CHMAP_BLC,        /* bottom left center */
507         SNDRV_CHMAP_BRC,        /* bottom right center */
508         SNDRV_CHMAP_LAST = SNDRV_CHMAP_BRC,
509 };
510 
511 #define SNDRV_CHMAP_POSITION_MASK       0xffff
512 #define SNDRV_CHMAP_PHASE_INVERSE       (0x01 << 16)
513 #define SNDRV_CHMAP_DRIVER_SPEC         (0x02 << 16)
514 
515 #define SNDRV_PCM_IOCTL_PVERSION        _IOR('A', 0x00, int)
516 #define SNDRV_PCM_IOCTL_INFO            _IOR('A', 0x01, struct snd_pcm_info)
517 #define SNDRV_PCM_IOCTL_TSTAMP          _IOW('A', 0x02, int)
518 #define SNDRV_PCM_IOCTL_TTSTAMP         _IOW('A', 0x03, int)
519 #define SNDRV_PCM_IOCTL_HW_REFINE       _IOWR('A', 0x10, struct snd_pcm_hw_params)
520 #define SNDRV_PCM_IOCTL_HW_PARAMS       _IOWR('A', 0x11, struct snd_pcm_hw_params)
521 #define SNDRV_PCM_IOCTL_HW_FREE         _IO('A', 0x12)
522 #define SNDRV_PCM_IOCTL_SW_PARAMS       _IOWR('A', 0x13, struct snd_pcm_sw_params)
523 #define SNDRV_PCM_IOCTL_STATUS          _IOR('A', 0x20, struct snd_pcm_status)
524 #define SNDRV_PCM_IOCTL_DELAY           _IOR('A', 0x21, snd_pcm_sframes_t)
525 #define SNDRV_PCM_IOCTL_HWSYNC          _IO('A', 0x22)
526 #define SNDRV_PCM_IOCTL_SYNC_PTR        _IOWR('A', 0x23, struct snd_pcm_sync_ptr)
527 #define SNDRV_PCM_IOCTL_CHANNEL_INFO    _IOR('A', 0x32, struct snd_pcm_channel_info)
528 #define SNDRV_PCM_IOCTL_PREPARE         _IO('A', 0x40)
529 #define SNDRV_PCM_IOCTL_RESET           _IO('A', 0x41)
530 #define SNDRV_PCM_IOCTL_START           _IO('A', 0x42)
531 #define SNDRV_PCM_IOCTL_DROP            _IO('A', 0x43)
532 #define SNDRV_PCM_IOCTL_DRAIN           _IO('A', 0x44)
533 #define SNDRV_PCM_IOCTL_PAUSE           _IOW('A', 0x45, int)
534 #define SNDRV_PCM_IOCTL_REWIND          _IOW('A', 0x46, snd_pcm_uframes_t)
535 #define SNDRV_PCM_IOCTL_RESUME          _IO('A', 0x47)
536 #define SNDRV_PCM_IOCTL_XRUN            _IO('A', 0x48)
537 #define SNDRV_PCM_IOCTL_FORWARD         _IOW('A', 0x49, snd_pcm_uframes_t)
538 #define SNDRV_PCM_IOCTL_WRITEI_FRAMES   _IOW('A', 0x50, struct snd_xferi)
539 #define SNDRV_PCM_IOCTL_READI_FRAMES    _IOR('A', 0x51, struct snd_xferi)
540 #define SNDRV_PCM_IOCTL_WRITEN_FRAMES   _IOW('A', 0x52, struct snd_xfern)
541 #define SNDRV_PCM_IOCTL_READN_FRAMES    _IOR('A', 0x53, struct snd_xfern)
542 #define SNDRV_PCM_IOCTL_LINK            _IOW('A', 0x60, int)
543 #define SNDRV_PCM_IOCTL_UNLINK          _IO('A', 0x61)
544 
545 /*****************************************************************************
546  *                                                                           *
547  *                            MIDI v1.0 interface                            *
548  *                                                                           *
549  *****************************************************************************/
550 
551 /*
552  *  Raw MIDI section - /dev/snd/midi??
553  */
554 
555 #define SNDRV_RAWMIDI_VERSION           SNDRV_PROTOCOL_VERSION(2, 0, 0)
556 
557 enum {
558         SNDRV_RAWMIDI_STREAM_OUTPUT = 0,
559         SNDRV_RAWMIDI_STREAM_INPUT,
560         SNDRV_RAWMIDI_STREAM_LAST = SNDRV_RAWMIDI_STREAM_INPUT,
561 };
562 
563 #define SNDRV_RAWMIDI_INFO_OUTPUT               0x00000001
564 #define SNDRV_RAWMIDI_INFO_INPUT                0x00000002
565 #define SNDRV_RAWMIDI_INFO_DUPLEX               0x00000004
566 
567 struct snd_rawmidi_info {
568         unsigned int device;            /* RO/WR (control): device number */
569         unsigned int subdevice;         /* RO/WR (control): subdevice number */
570         int stream;                     /* WR: stream */
571         int card;                       /* R: card number */
572         unsigned int flags;             /* SNDRV_RAWMIDI_INFO_XXXX */
573         unsigned char id[64];           /* ID (user selectable) */
574         unsigned char name[80];         /* name of device */
575         unsigned char subname[32];      /* name of active or selected subdevice */
576         unsigned int subdevices_count;
577         unsigned int subdevices_avail;
578         unsigned char reserved[64];     /* reserved for future use */
579 };
580 
581 struct snd_rawmidi_params {
582         int stream;
583         size_t buffer_size;             /* queue size in bytes */
584         size_t avail_min;               /* minimum avail bytes for wakeup */
585         unsigned int no_active_sensing: 1; /* do not send active sensing byte in close() */
586         unsigned char reserved[16];     /* reserved for future use */
587 };
588 
589 struct snd_rawmidi_status {
590         int stream;
591         struct timespec tstamp;         /* Timestamp */
592         size_t avail;                   /* available bytes */
593         size_t xruns;                   /* count of overruns since last status (in bytes) */
594         unsigned char reserved[16];     /* reserved for future use */
595 };
596 
597 #define SNDRV_RAWMIDI_IOCTL_PVERSION    _IOR('W', 0x00, int)
598 #define SNDRV_RAWMIDI_IOCTL_INFO        _IOR('W', 0x01, struct snd_rawmidi_info)
599 #define SNDRV_RAWMIDI_IOCTL_PARAMS      _IOWR('W', 0x10, struct snd_rawmidi_params)
600 #define SNDRV_RAWMIDI_IOCTL_STATUS      _IOWR('W', 0x20, struct snd_rawmidi_status)
601 #define SNDRV_RAWMIDI_IOCTL_DROP        _IOW('W', 0x30, int)
602 #define SNDRV_RAWMIDI_IOCTL_DRAIN       _IOW('W', 0x31, int)
603 
604 /*
605  *  Timer section - /dev/snd/timer
606  */
607 
608 #define SNDRV_TIMER_VERSION             SNDRV_PROTOCOL_VERSION(2, 0, 6)
609 
610 enum {
611         SNDRV_TIMER_CLASS_NONE = -1,
612         SNDRV_TIMER_CLASS_SLAVE = 0,
613         SNDRV_TIMER_CLASS_GLOBAL,
614         SNDRV_TIMER_CLASS_CARD,
615         SNDRV_TIMER_CLASS_PCM,
616         SNDRV_TIMER_CLASS_LAST = SNDRV_TIMER_CLASS_PCM,
617 };
618 
619 /* slave timer classes */
620 enum {
621         SNDRV_TIMER_SCLASS_NONE = 0,
622         SNDRV_TIMER_SCLASS_APPLICATION,
623         SNDRV_TIMER_SCLASS_SEQUENCER,           /* alias */
624         SNDRV_TIMER_SCLASS_OSS_SEQUENCER,       /* alias */
625         SNDRV_TIMER_SCLASS_LAST = SNDRV_TIMER_SCLASS_OSS_SEQUENCER,
626 };
627 
628 /* global timers (device member) */
629 #define SNDRV_TIMER_GLOBAL_SYSTEM       0
630 #define SNDRV_TIMER_GLOBAL_RTC          1
631 #define SNDRV_TIMER_GLOBAL_HPET         2
632 #define SNDRV_TIMER_GLOBAL_HRTIMER      3
633 
634 /* info flags */
635 #define SNDRV_TIMER_FLG_SLAVE           (1<<0)  /* cannot be controlled */
636 
637 struct snd_timer_id {
638         int dev_class;
639         int dev_sclass;
640         int card;
641         int device;
642         int subdevice;
643 };
644 
645 struct snd_timer_ginfo {
646         struct snd_timer_id tid;        /* requested timer ID */
647         unsigned int flags;             /* timer flags - SNDRV_TIMER_FLG_* */
648         int card;                       /* card number */
649         unsigned char id[64];           /* timer identification */
650         unsigned char name[80];         /* timer name */
651         unsigned long reserved0;        /* reserved for future use */
652         unsigned long resolution;       /* average period resolution in ns */
653         unsigned long resolution_min;   /* minimal period resolution in ns */
654         unsigned long resolution_max;   /* maximal period resolution in ns */
655         unsigned int clients;           /* active timer clients */
656         unsigned char reserved[32];
657 };
658 
659 struct snd_timer_gparams {
660         struct snd_timer_id tid;        /* requested timer ID */
661         unsigned long period_num;       /* requested precise period duration (in seconds) - numerator */
662         unsigned long period_den;       /* requested precise period duration (in seconds) - denominator */
663         unsigned char reserved[32];
664 };
665 
666 struct snd_timer_gstatus {
667         struct snd_timer_id tid;        /* requested timer ID */
668         unsigned long resolution;       /* current period resolution in ns */
669         unsigned long resolution_num;   /* precise current period resolution (in seconds) - numerator */
670         unsigned long resolution_den;   /* precise current period resolution (in seconds) - denominator */
671         unsigned char reserved[32];
672 };
673 
674 struct snd_timer_select {
675         struct snd_timer_id id; /* bind to timer ID */
676         unsigned char reserved[32];     /* reserved */
677 };
678 
679 struct snd_timer_info {
680         unsigned int flags;             /* timer flags - SNDRV_TIMER_FLG_* */
681         int card;                       /* card number */
682         unsigned char id[64];           /* timer identificator */
683         unsigned char name[80];         /* timer name */
684         unsigned long reserved0;        /* reserved for future use */
685         unsigned long resolution;       /* average period resolution in ns */
686         unsigned char reserved[64];     /* reserved */
687 };
688 
689 #define SNDRV_TIMER_PSFLG_AUTO          (1<<0)  /* auto start, otherwise one-shot */
690 #define SNDRV_TIMER_PSFLG_EXCLUSIVE     (1<<1)  /* exclusive use, precise start/stop/pause/continue */
691 #define SNDRV_TIMER_PSFLG_EARLY_EVENT   (1<<2)  /* write early event to the poll queue */
692 
693 struct snd_timer_params {
694         unsigned int flags;             /* flags - SNDRV_MIXER_PSFLG_* */
695         unsigned int ticks;             /* requested resolution in ticks */
696         unsigned int queue_size;        /* total size of queue (32-1024) */
697         unsigned int reserved0;         /* reserved, was: failure locations */
698         unsigned int filter;            /* event filter (bitmask of SNDRV_TIMER_EVENT_*) */
699         unsigned char reserved[60];     /* reserved */
700 };
701 
702 struct snd_timer_status {
703         struct timespec tstamp;         /* Timestamp - last update */
704         unsigned int resolution;        /* current period resolution in ns */
705         unsigned int lost;              /* counter of master tick lost */
706         unsigned int overrun;           /* count of read queue overruns */
707         unsigned int queue;             /* used queue size */
708         unsigned char reserved[64];     /* reserved */
709 };
710 
711 #define SNDRV_TIMER_IOCTL_PVERSION      _IOR('T', 0x00, int)
712 #define SNDRV_TIMER_IOCTL_NEXT_DEVICE   _IOWR('T', 0x01, struct snd_timer_id)
713 #define SNDRV_TIMER_IOCTL_TREAD         _IOW('T', 0x02, int)
714 #define SNDRV_TIMER_IOCTL_GINFO         _IOWR('T', 0x03, struct snd_timer_ginfo)
715 #define SNDRV_TIMER_IOCTL_GPARAMS       _IOW('T', 0x04, struct snd_timer_gparams)
716 #define SNDRV_TIMER_IOCTL_GSTATUS       _IOWR('T', 0x05, struct snd_timer_gstatus)
717 #define SNDRV_TIMER_IOCTL_SELECT        _IOW('T', 0x10, struct snd_timer_select)
718 #define SNDRV_TIMER_IOCTL_INFO          _IOR('T', 0x11, struct snd_timer_info)
719 #define SNDRV_TIMER_IOCTL_PARAMS        _IOW('T', 0x12, struct snd_timer_params)
720 #define SNDRV_TIMER_IOCTL_STATUS        _IOR('T', 0x14, struct snd_timer_status)
721 /* The following four ioctls are changed since 1.0.9 due to confliction */
722 #define SNDRV_TIMER_IOCTL_START         _IO('T', 0xa0)
723 #define SNDRV_TIMER_IOCTL_STOP          _IO('T', 0xa1)
724 #define SNDRV_TIMER_IOCTL_CONTINUE      _IO('T', 0xa2)
725 #define SNDRV_TIMER_IOCTL_PAUSE         _IO('T', 0xa3)
726 
727 struct snd_timer_read {
728         unsigned int resolution;
729         unsigned int ticks;
730 };
731 
732 enum {
733         SNDRV_TIMER_EVENT_RESOLUTION = 0,       /* val = resolution in ns */
734         SNDRV_TIMER_EVENT_TICK,                 /* val = ticks */
735         SNDRV_TIMER_EVENT_START,                /* val = resolution in ns */
736         SNDRV_TIMER_EVENT_STOP,                 /* val = 0 */
737         SNDRV_TIMER_EVENT_CONTINUE,             /* val = resolution in ns */
738         SNDRV_TIMER_EVENT_PAUSE,                /* val = 0 */
739         SNDRV_TIMER_EVENT_EARLY,                /* val = 0, early event */
740         SNDRV_TIMER_EVENT_SUSPEND,              /* val = 0 */
741         SNDRV_TIMER_EVENT_RESUME,               /* val = resolution in ns */
742         /* master timer events for slave timer instances */
743         SNDRV_TIMER_EVENT_MSTART = SNDRV_TIMER_EVENT_START + 10,
744         SNDRV_TIMER_EVENT_MSTOP = SNDRV_TIMER_EVENT_STOP + 10,
745         SNDRV_TIMER_EVENT_MCONTINUE = SNDRV_TIMER_EVENT_CONTINUE + 10,
746         SNDRV_TIMER_EVENT_MPAUSE = SNDRV_TIMER_EVENT_PAUSE + 10,
747         SNDRV_TIMER_EVENT_MSUSPEND = SNDRV_TIMER_EVENT_SUSPEND + 10,
748         SNDRV_TIMER_EVENT_MRESUME = SNDRV_TIMER_EVENT_RESUME + 10,
749 };
750 
751 struct snd_timer_tread {
752         int event;
753         struct timespec tstamp;
754         unsigned int val;
755 };
756 
757 /****************************************************************************
758  *                                                                          *
759  *        Section for driver control interface - /dev/snd/control?          *
760  *                                                                          *
761  ****************************************************************************/
762 
763 #define SNDRV_CTL_VERSION               SNDRV_PROTOCOL_VERSION(2, 0, 7)
764 
765 struct snd_ctl_card_info {
766         int card;                       /* card number */
767         int pad;                        /* reserved for future (was type) */
768         unsigned char id[16];           /* ID of card (user selectable) */
769         unsigned char driver[16];       /* Driver name */
770         unsigned char name[32];         /* Short name of soundcard */
771         unsigned char longname[80];     /* name + info text about soundcard */
772         unsigned char reserved_[16];    /* reserved for future (was ID of mixer) */
773         unsigned char mixername[80];    /* visual mixer identification */
774         unsigned char components[128];  /* card components / fine identification, delimited with one space (AC97 etc..) */
775 };
776 
777 typedef int __bitwise snd_ctl_elem_type_t;
778 #define SNDRV_CTL_ELEM_TYPE_NONE        ((__force snd_ctl_elem_type_t) 0) /* invalid */
779 #define SNDRV_CTL_ELEM_TYPE_BOOLEAN     ((__force snd_ctl_elem_type_t) 1) /* boolean type */
780 #define SNDRV_CTL_ELEM_TYPE_INTEGER     ((__force snd_ctl_elem_type_t) 2) /* integer type */
781 #define SNDRV_CTL_ELEM_TYPE_ENUMERATED  ((__force snd_ctl_elem_type_t) 3) /* enumerated type */
782 #define SNDRV_CTL_ELEM_TYPE_BYTES       ((__force snd_ctl_elem_type_t) 4) /* byte array */
783 #define SNDRV_CTL_ELEM_TYPE_IEC958      ((__force snd_ctl_elem_type_t) 5) /* IEC958 (S/PDIF) setup */
784 #define SNDRV_CTL_ELEM_TYPE_INTEGER64   ((__force snd_ctl_elem_type_t) 6) /* 64-bit integer type */
785 #define SNDRV_CTL_ELEM_TYPE_LAST        SNDRV_CTL_ELEM_TYPE_INTEGER64
786 
787 typedef int __bitwise snd_ctl_elem_iface_t;
788 #define SNDRV_CTL_ELEM_IFACE_CARD       ((__force snd_ctl_elem_iface_t) 0) /* global control */
789 #define SNDRV_CTL_ELEM_IFACE_HWDEP      ((__force snd_ctl_elem_iface_t) 1) /* hardware dependent device */
790 #define SNDRV_CTL_ELEM_IFACE_MIXER      ((__force snd_ctl_elem_iface_t) 2) /* virtual mixer device */
791 #define SNDRV_CTL_ELEM_IFACE_PCM        ((__force snd_ctl_elem_iface_t) 3) /* PCM device */
792 #define SNDRV_CTL_ELEM_IFACE_RAWMIDI    ((__force snd_ctl_elem_iface_t) 4) /* RawMidi device */
793 #define SNDRV_CTL_ELEM_IFACE_TIMER      ((__force snd_ctl_elem_iface_t) 5) /* timer device */
794 #define SNDRV_CTL_ELEM_IFACE_SEQUENCER  ((__force snd_ctl_elem_iface_t) 6) /* sequencer client */
795 #define SNDRV_CTL_ELEM_IFACE_LAST       SNDRV_CTL_ELEM_IFACE_SEQUENCER
796 
797 #define SNDRV_CTL_ELEM_ACCESS_READ              (1<<0)
798 #define SNDRV_CTL_ELEM_ACCESS_WRITE             (1<<1)
799 #define SNDRV_CTL_ELEM_ACCESS_READWRITE         (SNDRV_CTL_ELEM_ACCESS_READ|SNDRV_CTL_ELEM_ACCESS_WRITE)
800 #define SNDRV_CTL_ELEM_ACCESS_VOLATILE          (1<<2)  /* control value may be changed without a notification */
801 #define SNDRV_CTL_ELEM_ACCESS_TIMESTAMP         (1<<3)  /* when was control changed */
802 #define SNDRV_CTL_ELEM_ACCESS_TLV_READ          (1<<4)  /* TLV read is possible */
803 #define SNDRV_CTL_ELEM_ACCESS_TLV_WRITE         (1<<5)  /* TLV write is possible */
804 #define SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE     (SNDRV_CTL_ELEM_ACCESS_TLV_READ|SNDRV_CTL_ELEM_ACCESS_TLV_WRITE)
805 #define SNDRV_CTL_ELEM_ACCESS_TLV_COMMAND       (1<<6)  /* TLV command is possible */
806 #define SNDRV_CTL_ELEM_ACCESS_INACTIVE          (1<<8)  /* control does actually nothing, but may be updated */
807 #define SNDRV_CTL_ELEM_ACCESS_LOCK              (1<<9)  /* write lock */
808 #define SNDRV_CTL_ELEM_ACCESS_OWNER             (1<<10) /* write lock owner */
809 #define SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK      (1<<28) /* kernel use a TLV callback */ 
810 #define SNDRV_CTL_ELEM_ACCESS_USER              (1<<29) /* user space element */
811 /* bits 30 and 31 are obsoleted (for indirect access) */
812 
813 /* for further details see the ACPI and PCI power management specification */
814 #define SNDRV_CTL_POWER_D0              0x0000  /* full On */
815 #define SNDRV_CTL_POWER_D1              0x0100  /* partial On */
816 #define SNDRV_CTL_POWER_D2              0x0200  /* partial On */
817 #define SNDRV_CTL_POWER_D3              0x0300  /* Off */
818 #define SNDRV_CTL_POWER_D3hot           (SNDRV_CTL_POWER_D3|0x0000)     /* Off, with power */
819 #define SNDRV_CTL_POWER_D3cold          (SNDRV_CTL_POWER_D3|0x0001)     /* Off, without power */
820 
821 #define SNDRV_CTL_ELEM_ID_NAME_MAXLEN   44
822 
823 struct snd_ctl_elem_id {
824         unsigned int numid;             /* numeric identifier, zero = invalid */
825         snd_ctl_elem_iface_t iface;     /* interface identifier */
826         unsigned int device;            /* device/client number */
827         unsigned int subdevice;         /* subdevice (substream) number */
828         unsigned char name[44];         /* ASCII name of item */
829         unsigned int index;             /* index of item */
830 };
831 
832 struct snd_ctl_elem_list {
833         unsigned int offset;            /* W: first element ID to get */
834         unsigned int space;             /* W: count of element IDs to get */
835         unsigned int used;              /* R: count of element IDs set */
836         unsigned int count;             /* R: count of all elements */
837         struct snd_ctl_elem_id __user *pids; /* R: IDs */
838         unsigned char reserved[50];
839 };
840 
841 struct snd_ctl_elem_info {
842         struct snd_ctl_elem_id id;      /* W: element ID */
843         snd_ctl_elem_type_t type;       /* R: value type - SNDRV_CTL_ELEM_TYPE_* */
844         unsigned int access;            /* R: value access (bitmask) - SNDRV_CTL_ELEM_ACCESS_* */
845         unsigned int count;             /* count of values */
846         __kernel_pid_t owner;           /* owner's PID of this control */
847         union {
848                 struct {
849                         long min;               /* R: minimum value */
850                         long max;               /* R: maximum value */
851                         long step;              /* R: step (0 variable) */
852                 } integer;
853                 struct {
854                         long long min;          /* R: minimum value */
855                         long long max;          /* R: maximum value */
856                         long long step;         /* R: step (0 variable) */
857                 } integer64;
858                 struct {
859                         unsigned int items;     /* R: number of items */
860                         unsigned int item;      /* W: item number */
861                         char name[64];          /* R: value name */
862                         __u64 names_ptr;        /* W: names list (ELEM_ADD only) */
863                         unsigned int names_length;
864                 } enumerated;
865                 unsigned char reserved[128];
866         } value;
867         union {
868                 unsigned short d[4];            /* dimensions */
869                 unsigned short *d_ptr;          /* indirect - obsoleted */
870         } dimen;
871         unsigned char reserved[64-4*sizeof(unsigned short)];
872 };
873 
874 struct snd_ctl_elem_value {
875         struct snd_ctl_elem_id id;      /* W: element ID */
876         unsigned int indirect: 1;       /* W: indirect access - obsoleted */
877         union {
878                 union {
879                         long value[128];
880                         long *value_ptr;        /* obsoleted */
881                 } integer;
882                 union {
883                         long long value[64];
884                         long long *value_ptr;   /* obsoleted */
885                 } integer64;
886                 union {
887                         unsigned int item[128];
888                         unsigned int *item_ptr; /* obsoleted */
889                 } enumerated;
890                 union {
891                         unsigned char data[512];
892                         unsigned char *data_ptr;        /* obsoleted */
893                 } bytes;
894                 struct snd_aes_iec958 iec958;
895         } value;                /* RO */
896         struct timespec tstamp;
897         unsigned char reserved[128-sizeof(struct timespec)];
898 };
899 
900 struct snd_ctl_tlv {
901         unsigned int numid;     /* control element numeric identification */
902         unsigned int length;    /* in bytes aligned to 4 */
903         unsigned int tlv[0];    /* first TLV */
904 };
905 
906 #define SNDRV_CTL_IOCTL_PVERSION        _IOR('U', 0x00, int)
907 #define SNDRV_CTL_IOCTL_CARD_INFO       _IOR('U', 0x01, struct snd_ctl_card_info)
908 #define SNDRV_CTL_IOCTL_ELEM_LIST       _IOWR('U', 0x10, struct snd_ctl_elem_list)
909 #define SNDRV_CTL_IOCTL_ELEM_INFO       _IOWR('U', 0x11, struct snd_ctl_elem_info)
910 #define SNDRV_CTL_IOCTL_ELEM_READ       _IOWR('U', 0x12, struct snd_ctl_elem_value)
911 #define SNDRV_CTL_IOCTL_ELEM_WRITE      _IOWR('U', 0x13, struct snd_ctl_elem_value)
912 #define SNDRV_CTL_IOCTL_ELEM_LOCK       _IOW('U', 0x14, struct snd_ctl_elem_id)
913 #define SNDRV_CTL_IOCTL_ELEM_UNLOCK     _IOW('U', 0x15, struct snd_ctl_elem_id)
914 #define SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS _IOWR('U', 0x16, int)
915 #define SNDRV_CTL_IOCTL_ELEM_ADD        _IOWR('U', 0x17, struct snd_ctl_elem_info)
916 #define SNDRV_CTL_IOCTL_ELEM_REPLACE    _IOWR('U', 0x18, struct snd_ctl_elem_info)
917 #define SNDRV_CTL_IOCTL_ELEM_REMOVE     _IOWR('U', 0x19, struct snd_ctl_elem_id)
918 #define SNDRV_CTL_IOCTL_TLV_READ        _IOWR('U', 0x1a, struct snd_ctl_tlv)
919 #define SNDRV_CTL_IOCTL_TLV_WRITE       _IOWR('U', 0x1b, struct snd_ctl_tlv)
920 #define SNDRV_CTL_IOCTL_TLV_COMMAND     _IOWR('U', 0x1c, struct snd_ctl_tlv)
921 #define SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE _IOWR('U', 0x20, int)
922 #define SNDRV_CTL_IOCTL_HWDEP_INFO      _IOR('U', 0x21, struct snd_hwdep_info)
923 #define SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE _IOR('U', 0x30, int)
924 #define SNDRV_CTL_IOCTL_PCM_INFO        _IOWR('U', 0x31, struct snd_pcm_info)
925 #define SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE _IOW('U', 0x32, int)
926 #define SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE _IOWR('U', 0x40, int)
927 #define SNDRV_CTL_IOCTL_RAWMIDI_INFO    _IOWR('U', 0x41, struct snd_rawmidi_info)
928 #define SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE _IOW('U', 0x42, int)
929 #define SNDRV_CTL_IOCTL_POWER           _IOWR('U', 0xd0, int)
930 #define SNDRV_CTL_IOCTL_POWER_STATE     _IOR('U', 0xd1, int)
931 
932 /*
933  *  Read interface.
934  */
935 
936 enum sndrv_ctl_event_type {
937         SNDRV_CTL_EVENT_ELEM = 0,
938         SNDRV_CTL_EVENT_LAST = SNDRV_CTL_EVENT_ELEM,
939 };
940 
941 #define SNDRV_CTL_EVENT_MASK_VALUE      (1<<0)  /* element value was changed */
942 #define SNDRV_CTL_EVENT_MASK_INFO       (1<<1)  /* element info was changed */
943 #define SNDRV_CTL_EVENT_MASK_ADD        (1<<2)  /* element was added */
944 #define SNDRV_CTL_EVENT_MASK_TLV        (1<<3)  /* element TLV tree was changed */
945 #define SNDRV_CTL_EVENT_MASK_REMOVE     (~0U)   /* element was removed */
946 
947 struct snd_ctl_event {
948         int type;       /* event type - SNDRV_CTL_EVENT_* */
949         union {
950                 struct {
951                         unsigned int mask;
952                         struct snd_ctl_elem_id id;
953                 } elem;
954                 unsigned char data8[60];
955         } data;
956 };
957 
958 /*
959  *  Control names
960  */
961 
962 #define SNDRV_CTL_NAME_NONE                             ""
963 #define SNDRV_CTL_NAME_PLAYBACK                         "Playback "
964 #define SNDRV_CTL_NAME_CAPTURE                          "Capture "
965 
966 #define SNDRV_CTL_NAME_IEC958_NONE                      ""
967 #define SNDRV_CTL_NAME_IEC958_SWITCH                    "Switch"
968 #define SNDRV_CTL_NAME_IEC958_VOLUME                    "Volume"
969 #define SNDRV_CTL_NAME_IEC958_DEFAULT                   "Default"
970 #define SNDRV_CTL_NAME_IEC958_MASK                      "Mask"
971 #define SNDRV_CTL_NAME_IEC958_CON_MASK                  "Con Mask"
972 #define SNDRV_CTL_NAME_IEC958_PRO_MASK                  "Pro Mask"
973 #define SNDRV_CTL_NAME_IEC958_PCM_STREAM                "PCM Stream"
974 #define SNDRV_CTL_NAME_IEC958(expl,direction,what)      "IEC958 " expl SNDRV_CTL_NAME_##direction SNDRV_CTL_NAME_IEC958_##what
975 
976 #endif /* _UAPI__SOUND_ASOUND_H */
977 

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