include/sound/asound.h

   1 /*
   2  *  Advanced Linux Sound Architecture - ALSA - Driver
   3  *  Copyright (c) 1994-2003 by Jaroslav Kysela <perex@suse.cz>,
   4  *                             Abramo Bagnara <abramo@alsa-project.org>
   5  *
   6  *
   7  *   This program is free software; you can redistribute it and/or modify
   8  *   it under the terms of the GNU General Public License as published by
   9  *   the Free Software Foundation; either version 2 of the License, or
  10  *   (at your option) any later version.
  11  *
  12  *   This program is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *   GNU General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU General Public License
  18  *   along with this program; if not, write to the Free Software
  19  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  20  *
  21  */
  22
  23 #ifndef __SOUND_ASOUND_H
  24 #define __SOUND_ASOUND_H
  25
  26 #if defined(LINUX) || defined(__LINUX__) || defined(__linux__)
  27
  28 #include <linux/ioctl.h>
  29
  30 #ifdef __KERNEL__
  31
  32 #include <linux/types.h>
  33 #include <linux/time.h>
  34 #include <asm/byteorder.h>
  35
  36 #ifdef  __LITTLE_ENDIAN
  37 #define SNDRV_LITTLE_ENDIAN
  38 #else
  39 #ifdef __BIG_ENDIAN
  40 #define SNDRV_BIG_ENDIAN
  41 #else
  42 #error "Unsupported endian..."
  43 #endif
  44 #endif
  45
  46 #else /* !__KERNEL__ */
  47
  48 #include <endian.h>
  49 #if __BYTE_ORDER == __LITTLE_ENDIAN
  50 #define SNDRV_LITTLE_ENDIAN
  51 #elif __BYTE_ORDER == __BIG_ENDIAN
  52 #define SNDRV_BIG_ENDIAN
  53 #else
  54 #error "Unsupported endian..."
  55 #endif
  56
  57 #endif /* __KERNEL **/
  58
  59 #endif /* LINUX */
  60
  61 #ifndef __KERNEL__
  62 #include <sys/time.h>
  63 #include <sys/types.h>
  64 #endif
  65
  66 /*
  67  *  protocol version
  68  */
  69
  70 #define SNDRV_PROTOCOL_VERSION(major, minor, subminor) (((major)<<16)|((minor)<<8)|(subminor))
  71 #define SNDRV_PROTOCOL_MAJOR(version) (((version)>>16)&0xffff)
  72 #define SNDRV_PROTOCOL_MINOR(version) (((version)>>8)&0xff)
  73 #define SNDRV_PROTOCOL_MICRO(version) ((version)&0xff)
  74 #define SNDRV_PROTOCOL_INCOMPATIBLE(kversion, uversion) \
  75         (SNDRV_PROTOCOL_MAJOR(kversion) != SNDRV_PROTOCOL_MAJOR(uversion) || \
  76          (SNDRV_PROTOCOL_MAJOR(kversion) == SNDRV_PROTOCOL_MAJOR(uversion) && \
  77            SNDRV_PROTOCOL_MINOR(kversion) != SNDRV_PROTOCOL_MINOR(uversion)))
  78
  79 /****************************************************************************
  80  *                                                                          *
  81  *        Digital audio interface                                           *
  82  *                                                                          *
  83  ****************************************************************************/
  84
  85 struct sndrv_aes_iec958 {
  86         unsigned char status[24];       /* AES/IEC958 channel status bits */
  87         unsigned char subcode[147];     /* AES/IEC958 subcode bits */
  88         unsigned char pad;              /* nothing */
  89         unsigned char dig_subframe[4];  /* AES/IEC958 subframe bits */
  90 };
  91
  92 /****************************************************************************
  93  *                                                                          *
  94  *      Section for driver hardware dependent interface - /dev/snd/hw?      *
  95  *                                                                          *
  96  ****************************************************************************/
  97
  98 #define SNDRV_HWDEP_VERSION             SNDRV_PROTOCOL_VERSION(1, 0, 1)
  99
 100 enum sndrv_hwdep_iface {
 101         SNDRV_HWDEP_IFACE_OPL2 = 0,
 102         SNDRV_HWDEP_IFACE_OPL3,
 103         SNDRV_HWDEP_IFACE_OPL4,
 104         SNDRV_HWDEP_IFACE_SB16CSP,      /* Creative Signal Processor */
 105         SNDRV_HWDEP_IFACE_EMU10K1,      /* FX8010 processor in EMU10K1 chip */
 106         SNDRV_HWDEP_IFACE_YSS225,       /* Yamaha FX processor */
 107         SNDRV_HWDEP_IFACE_ICS2115,      /* Wavetable synth */
 108         SNDRV_HWDEP_IFACE_SSCAPE,       /* Ensoniq SoundScape ISA card (MC68EC000) */
 109         SNDRV_HWDEP_IFACE_VX,           /* Digigram VX cards */
 110         SNDRV_HWDEP_IFACE_MIXART,       /* Digigram miXart cards */
 111         SNDRV_HWDEP_IFACE_USX2Y,        /* Tascam US122, US224 & US428 usb */
 112         SNDRV_HWDEP_IFACE_EMUX_WAVETABLE, /* EmuX wavetable */
 113
 114         /* Don't forget to change the following: */
 115         SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_EMUX_WAVETABLE,
 116 };
 117
 118 struct sndrv_hwdep_info {
 119         unsigned int device;            /* WR: device number */
 120         int card;                       /* R: card number */
 121         unsigned char id[64];           /* ID (user selectable) */
 122         unsigned char name[80];         /* hwdep name */
 123         enum sndrv_hwdep_iface iface;   /* hwdep interface */
 124         unsigned char reserved[64];     /* reserved for future */
 125 };
 126
 127 /* generic DSP loader */
 128 struct sndrv_hwdep_dsp_status {
 129         unsigned int version;           /* R: driver-specific version */
 130         unsigned char id[32];           /* R: driver-specific ID string */
 131         unsigned int num_dsps;          /* R: number of DSP images to transfer */
 132         unsigned int dsp_loaded;        /* R: bit flags indicating the loaded DSPs */
 133         unsigned int chip_ready;        /* R: 1 = initialization finished */
 134         unsigned char reserved[16];     /* reserved for future use */
 135 };
 136
 137 struct sndrv_hwdep_dsp_image {
 138         unsigned int index;             /* W: DSP index */
 139         unsigned char name[64];         /* W: ID (e.g. file name) */
 140         unsigned char __user *image;    /* W: binary image */
 141         size_t length;                  /* W: size of image in bytes */
 142         unsigned long driver_data;      /* W: driver-specific data */
 143 };
 144
 145 enum {
 146         SNDRV_HWDEP_IOCTL_PVERSION = _IOR ('H', 0x00, int),
 147         SNDRV_HWDEP_IOCTL_INFO = _IOR ('H', 0x01, struct sndrv_hwdep_info),
 148         SNDRV_HWDEP_IOCTL_DSP_STATUS = _IOR('H', 0x02, struct sndrv_hwdep_dsp_status),
 149         SNDRV_HWDEP_IOCTL_DSP_LOAD   = _IOW('H', 0x03, struct sndrv_hwdep_dsp_image)
 150 };
 151
 152 /*****************************************************************************
 153  *                                                                           *
 154  *             Digital Audio (PCM) interface - /dev/snd/pcm??                *
 155  *                                                                           *
 156  *****************************************************************************/
 157
 158 #define SNDRV_PCM_VERSION               SNDRV_PROTOCOL_VERSION(2, 0, 7)
 159
 160 typedef unsigned long sndrv_pcm_uframes_t;
 161 typedef long sndrv_pcm_sframes_t;
 162
 163 enum sndrv_pcm_class {
 164         SNDRV_PCM_CLASS_GENERIC = 0,    /* standard mono or stereo device */
 165         SNDRV_PCM_CLASS_MULTI,          /* multichannel device */
 166         SNDRV_PCM_CLASS_MODEM,          /* software modem class */
 167         SNDRV_PCM_CLASS_DIGITIZER,      /* digitizer class */
 168         /* Don't forget to change the following: */
 169         SNDRV_PCM_CLASS_LAST = SNDRV_PCM_CLASS_DIGITIZER,
 170 };
 171
 172 enum sndrv_pcm_subclass {
 173         SNDRV_PCM_SUBCLASS_GENERIC_MIX = 0, /* mono or stereo subdevices are mixed together */
 174         SNDRV_PCM_SUBCLASS_MULTI_MIX,   /* multichannel subdevices are mixed together */
 175         /* Don't forget to change the following: */
 176         SNDRV_PCM_SUBCLASS_LAST = SNDRV_PCM_SUBCLASS_MULTI_MIX,
 177 };
 178
 179 enum sndrv_pcm_stream {
 180         SNDRV_PCM_STREAM_PLAYBACK = 0,
 181         SNDRV_PCM_STREAM_CAPTURE,
 182         SNDRV_PCM_STREAM_LAST = SNDRV_PCM_STREAM_CAPTURE,
 183 };
 184
 185 enum sndrv_pcm_access {
 186         SNDRV_PCM_ACCESS_MMAP_INTERLEAVED = 0,  /* interleaved mmap */
 187         SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED,   /* noninterleaved mmap */
 188         SNDRV_PCM_ACCESS_MMAP_COMPLEX,          /* complex mmap */
 189         SNDRV_PCM_ACCESS_RW_INTERLEAVED,        /* readi/writei */
 190         SNDRV_PCM_ACCESS_RW_NONINTERLEAVED,     /* readn/writen */
 191         SNDRV_PCM_ACCESS_LAST = SNDRV_PCM_ACCESS_RW_NONINTERLEAVED,
 192 };
 193
 194 enum sndrv_pcm_format {
 195         SNDRV_PCM_FORMAT_S8 = 0,
 196         SNDRV_PCM_FORMAT_U8,
 197         SNDRV_PCM_FORMAT_S16_LE,
 198         SNDRV_PCM_FORMAT_S16_BE,
 199         SNDRV_PCM_FORMAT_U16_LE,
 200         SNDRV_PCM_FORMAT_U16_BE,
 201         SNDRV_PCM_FORMAT_S24_LE,        /* low three bytes */
 202         SNDRV_PCM_FORMAT_S24_BE,        /* low three bytes */
 203         SNDRV_PCM_FORMAT_U24_LE,        /* low three bytes */
 204         SNDRV_PCM_FORMAT_U24_BE,        /* low three bytes */
 205         SNDRV_PCM_FORMAT_S32_LE,
 206         SNDRV_PCM_FORMAT_S32_BE,
 207         SNDRV_PCM_FORMAT_U32_LE,
 208         SNDRV_PCM_FORMAT_U32_BE,
 209         SNDRV_PCM_FORMAT_FLOAT_LE,      /* 4-byte float, IEEE-754 32-bit, range -1.0 to 1.0 */
 210         SNDRV_PCM_FORMAT_FLOAT_BE,      /* 4-byte float, IEEE-754 32-bit, range -1.0 to 1.0 */
 211         SNDRV_PCM_FORMAT_FLOAT64_LE,    /* 8-byte float, IEEE-754 64-bit, range -1.0 to 1.0 */
 212         SNDRV_PCM_FORMAT_FLOAT64_BE,    /* 8-byte float, IEEE-754 64-bit, range -1.0 to 1.0 */
 213         SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE,    /* IEC-958 subframe, Little Endian */
 214         SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE,    /* IEC-958 subframe, Big Endian */
 215         SNDRV_PCM_FORMAT_MU_LAW,
 216         SNDRV_PCM_FORMAT_A_LAW,
 217         SNDRV_PCM_FORMAT_IMA_ADPCM,
 218         SNDRV_PCM_FORMAT_MPEG,
 219         SNDRV_PCM_FORMAT_GSM,
 220         SNDRV_PCM_FORMAT_SPECIAL = 31,
 221         SNDRV_PCM_FORMAT_S24_3LE = 32,  /* in three bytes */
 222         SNDRV_PCM_FORMAT_S24_3BE,       /* in three bytes */
 223         SNDRV_PCM_FORMAT_U24_3LE,       /* in three bytes */
 224         SNDRV_PCM_FORMAT_U24_3BE,       /* in three bytes */
 225         SNDRV_PCM_FORMAT_S20_3LE,       /* in three bytes */
 226         SNDRV_PCM_FORMAT_S20_3BE,       /* in three bytes */
 227         SNDRV_PCM_FORMAT_U20_3LE,       /* in three bytes */
 228         SNDRV_PCM_FORMAT_U20_3BE,       /* in three bytes */
 229         SNDRV_PCM_FORMAT_S18_3LE,       /* in three bytes */
 230         SNDRV_PCM_FORMAT_S18_3BE,       /* in three bytes */
 231         SNDRV_PCM_FORMAT_U18_3LE,       /* in three bytes */
 232         SNDRV_PCM_FORMAT_U18_3BE,       /* in three bytes */
 233         SNDRV_PCM_FORMAT_LAST = SNDRV_PCM_FORMAT_U18_3BE,
 234
 235 #ifdef SNDRV_LITTLE_ENDIAN
 236         SNDRV_PCM_FORMAT_S16 = SNDRV_PCM_FORMAT_S16_LE,
 237         SNDRV_PCM_FORMAT_U16 = SNDRV_PCM_FORMAT_U16_LE,
 238         SNDRV_PCM_FORMAT_S24 = SNDRV_PCM_FORMAT_S24_LE,
 239         SNDRV_PCM_FORMAT_U24 = SNDRV_PCM_FORMAT_U24_LE,
 240         SNDRV_PCM_FORMAT_S32 = SNDRV_PCM_FORMAT_S32_LE,
 241         SNDRV_PCM_FORMAT_U32 = SNDRV_PCM_FORMAT_U32_LE,
 242         SNDRV_PCM_FORMAT_FLOAT = SNDRV_PCM_FORMAT_FLOAT_LE,
 243         SNDRV_PCM_FORMAT_FLOAT64 = SNDRV_PCM_FORMAT_FLOAT64_LE,
 244         SNDRV_PCM_FORMAT_IEC958_SUBFRAME = SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE,
 245 #endif
 246 #ifdef SNDRV_BIG_ENDIAN
 247         SNDRV_PCM_FORMAT_S16 = SNDRV_PCM_FORMAT_S16_BE,
 248         SNDRV_PCM_FORMAT_U16 = SNDRV_PCM_FORMAT_U16_BE,
 249         SNDRV_PCM_FORMAT_S24 = SNDRV_PCM_FORMAT_S24_BE,
 250         SNDRV_PCM_FORMAT_U24 = SNDRV_PCM_FORMAT_U24_BE,
 251         SNDRV_PCM_FORMAT_S32 = SNDRV_PCM_FORMAT_S32_BE,
 252         SNDRV_PCM_FORMAT_U32 = SNDRV_PCM_FORMAT_U32_BE,
 253         SNDRV_PCM_FORMAT_FLOAT = SNDRV_PCM_FORMAT_FLOAT_BE,
 254         SNDRV_PCM_FORMAT_FLOAT64 = SNDRV_PCM_FORMAT_FLOAT64_BE,
 255         SNDRV_PCM_FORMAT_IEC958_SUBFRAME = SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE,
 256 #endif
 257 };
 258
 259 enum sndrv_pcm_subformat {
 260         SNDRV_PCM_SUBFORMAT_STD = 0,
 261         SNDRV_PCM_SUBFORMAT_LAST = SNDRV_PCM_SUBFORMAT_STD,
 262 };
 263
 264 #define SNDRV_PCM_INFO_MMAP             0x00000001      /* hardware supports mmap */
 265 #define SNDRV_PCM_INFO_MMAP_VALID       0x00000002      /* period data are valid during transfer */
 266 #define SNDRV_PCM_INFO_DOUBLE           0x00000004      /* Double buffering needed for PCM start/stop */
 267 #define SNDRV_PCM_INFO_BATCH            0x00000010      /* double buffering */
 268 #define SNDRV_PCM_INFO_INTERLEAVED      0x00000100      /* channels are interleaved */
 269 #define SNDRV_PCM_INFO_NONINTERLEAVED   0x00000200      /* channels are not interleaved */
 270 #define SNDRV_PCM_INFO_COMPLEX          0x00000400      /* complex frame organization (mmap only) */
 271 #define SNDRV_PCM_INFO_BLOCK_TRANSFER   0x00010000      /* hardware transfer block of samples */
 272 #define SNDRV_PCM_INFO_OVERRANGE        0x00020000      /* hardware supports ADC (capture) overrange detection */
 273 #define SNDRV_PCM_INFO_RESUME           0x00040000      /* hardware supports stream resume after suspend */
 274 #define SNDRV_PCM_INFO_PAUSE            0x00080000      /* pause ioctl is supported */
 275 #define SNDRV_PCM_INFO_HALF_DUPLEX      0x00100000      /* only half duplex */
 276 #define SNDRV_PCM_INFO_JOINT_DUPLEX     0x00200000      /* playback and capture stream are somewhat correlated */
 277 #define SNDRV_PCM_INFO_SYNC_START       0x00400000      /* pcm support some kind of sync go */
 278
 279 enum sndrv_pcm_state {
 280         SNDRV_PCM_STATE_OPEN = 0,       /* stream is open */
 281         SNDRV_PCM_STATE_SETUP,          /* stream has a setup */
 282         SNDRV_PCM_STATE_PREPARED,       /* stream is ready to start */
 283         SNDRV_PCM_STATE_RUNNING,        /* stream is running */
 284         SNDRV_PCM_STATE_XRUN,           /* stream reached an xrun */
 285         SNDRV_PCM_STATE_DRAINING,       /* stream is draining */
 286         SNDRV_PCM_STATE_PAUSED,         /* stream is paused */
 287         SNDRV_PCM_STATE_SUSPENDED,      /* hardware is suspended */
 288         SNDRV_PCM_STATE_DISCONNECTED,   /* hardware is disconnected */
 289         SNDRV_PCM_STATE_LAST = SNDRV_PCM_STATE_DISCONNECTED,
 290 };
 291
 292 enum {
 293         SNDRV_PCM_MMAP_OFFSET_DATA = 0x00000000,
 294         SNDRV_PCM_MMAP_OFFSET_STATUS = 0x80000000,
 295         SNDRV_PCM_MMAP_OFFSET_CONTROL = 0x81000000,
 296 };
 297
 298 union sndrv_pcm_sync_id {
 299         unsigned char id[16];
 300         unsigned short id16[8];
 301         unsigned int id32[4];
 302 };
 303
 304 struct sndrv_pcm_info {
 305         unsigned int device;            /* RO/WR (control): device number */
 306         unsigned int subdevice;         /* RO/WR (control): subdevice number */
 307         enum sndrv_pcm_stream stream;   /* RO/WR (control): stream number */
 308         int card;                       /* R: card number */
 309         unsigned char id[64];           /* ID (user selectable) */
 310         unsigned char name[80];         /* name of this device */
 311         unsigned char subname[32];      /* subdevice name */
 312         enum sndrv_pcm_class dev_class; /* SNDRV_PCM_CLASS_* */
 313         enum sndrv_pcm_subclass dev_subclass; /* SNDRV_PCM_SUBCLASS_* */
 314         unsigned int subdevices_count;
 315         unsigned int subdevices_avail;
 316         union sndrv_pcm_sync_id sync;   /* hardware synchronization ID */
 317         unsigned char reserved[64];     /* reserved for future... */
 318 };
 319
 320 enum sndrv_pcm_hw_param {
 321         SNDRV_PCM_HW_PARAM_ACCESS = 0,  /* Access type */
 322         SNDRV_PCM_HW_PARAM_FIRST_MASK = SNDRV_PCM_HW_PARAM_ACCESS,
 323         SNDRV_PCM_HW_PARAM_FORMAT,      /* Format */
 324         SNDRV_PCM_HW_PARAM_SUBFORMAT,   /* Subformat */
 325         SNDRV_PCM_HW_PARAM_LAST_MASK = SNDRV_PCM_HW_PARAM_SUBFORMAT,
 326
 327         SNDRV_PCM_HW_PARAM_SAMPLE_BITS = 8, /* Bits per sample */
 328         SNDRV_PCM_HW_PARAM_FIRST_INTERVAL = SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
 329         SNDRV_PCM_HW_PARAM_FRAME_BITS,  /* Bits per frame */
 330         SNDRV_PCM_HW_PARAM_CHANNELS,    /* Channels */
 331         SNDRV_PCM_HW_PARAM_RATE,        /* Approx rate */
 332         SNDRV_PCM_HW_PARAM_PERIOD_TIME, /* Approx distance between interrupts
 333                                            in us */
 334         SNDRV_PCM_HW_PARAM_PERIOD_SIZE, /* Approx frames between interrupts */
 335         SNDRV_PCM_HW_PARAM_PERIOD_BYTES, /* Approx bytes between interrupts */
 336         SNDRV_PCM_HW_PARAM_PERIODS,     /* Approx interrupts per buffer */
 337         SNDRV_PCM_HW_PARAM_BUFFER_TIME, /* Approx duration of buffer in us */
 338         SNDRV_PCM_HW_PARAM_BUFFER_SIZE, /* Size of buffer in frames */
 339         SNDRV_PCM_HW_PARAM_BUFFER_BYTES, /* Size of buffer in bytes */
 340         SNDRV_PCM_HW_PARAM_TICK_TIME,   /* Approx tick duration in us */
 341         SNDRV_PCM_HW_PARAM_LAST_INTERVAL = SNDRV_PCM_HW_PARAM_TICK_TIME
 342 };
 343
 344 #define SNDRV_PCM_HW_PARAMS_RUNTIME             (1<<0)
 345
 346 struct sndrv_interval {
 347         unsigned int min, max;
 348         unsigned int openmin:1,
 349                      openmax:1,
 350                      integer:1,
 351                      empty:1;
 352 };
 353
 354 #define SNDRV_MASK_MAX  256
 355
 356 struct sndrv_mask {
 357         u_int32_t bits[(SNDRV_MASK_MAX+31)/32];
 358 };
 359
 360 struct sndrv_pcm_hw_params {
 361         unsigned int flags;
 362         struct sndrv_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK -
 363                                SNDRV_PCM_HW_PARAM_FIRST_MASK + 1];
 364         struct sndrv_mask mres[5];      /* reserved masks */
 365         struct sndrv_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL -
 366                                         SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];
 367         struct sndrv_interval ires[9];  /* reserved intervals */
 368         unsigned int rmask;             /* W: requested masks */
 369         unsigned int cmask;             /* R: changed masks */
 370         unsigned int info;              /* R: Info flags for returned setup */
 371         unsigned int msbits;            /* R: used most significant bits */
 372         unsigned int rate_num;          /* R: rate numerator */
 373         unsigned int rate_den;          /* R: rate denominator */
 374         sndrv_pcm_uframes_t fifo_size;  /* R: chip FIFO size in frames */
 375         unsigned char reserved[64];     /* reserved for future */
 376 };
 377
 378 enum sndrv_pcm_tstamp {
 379         SNDRV_PCM_TSTAMP_NONE = 0,
 380         SNDRV_PCM_TSTAMP_MMAP,
 381         SNDRV_PCM_TSTAMP_LAST = SNDRV_PCM_TSTAMP_MMAP,
 382 };
 383
 384 struct sndrv_pcm_sw_params {
 385         enum sndrv_pcm_tstamp tstamp_mode;      /* timestamp mode */
 386         unsigned int period_step;
 387         unsigned int sleep_min;                 /* min ticks to sleep */
 388         sndrv_pcm_uframes_t avail_min;          /* min avail frames for wakeup */
 389         sndrv_pcm_uframes_t xfer_align;         /* xfer size need to be a multiple */
 390         sndrv_pcm_uframes_t start_threshold;    /* min hw_avail frames for automatic start */
 391         sndrv_pcm_uframes_t stop_threshold;     /* min avail frames for automatic stop */
 392         sndrv_pcm_uframes_t silence_threshold;  /* min distance from noise for silence filling */
 393         sndrv_pcm_uframes_t silence_size;       /* silence block size */
 394         sndrv_pcm_uframes_t boundary;           /* pointers wrap point */
 395         unsigned char reserved[64];             /* reserved for future */
 396 };
 397
 398 struct sndrv_pcm_channel_info {
 399         unsigned int channel;
 400         off_t offset;                   /* mmap offset */
 401         unsigned int first;             /* offset to first sample in bits */
 402         unsigned int step;              /* samples distance in bits */
 403 };
 404
 405 struct sndrv_pcm_status {
 406         enum sndrv_pcm_state state;     /* stream state */
 407         struct timespec trigger_tstamp; /* time when stream was started/stopped/paused */
 408         struct timespec tstamp;         /* reference timestamp */
 409         sndrv_pcm_uframes_t appl_ptr;   /* appl ptr */
 410         sndrv_pcm_uframes_t hw_ptr;     /* hw ptr */
 411         sndrv_pcm_sframes_t delay;      /* current delay in frames */
 412         sndrv_pcm_uframes_t avail;      /* number of frames available */
 413         sndrv_pcm_uframes_t avail_max;  /* max frames available on hw since last status */
 414         sndrv_pcm_uframes_t overrange;  /* count of ADC (capture) overrange detections from last status */
 415         enum sndrv_pcm_state suspended_state; /* suspended stream state */
 416         unsigned char reserved[60];     /* must be filled with zero */
 417 };
 418
 419 struct sndrv_pcm_mmap_status {
 420         enum sndrv_pcm_state state;     /* RO: state - SNDRV_PCM_STATE_XXXX */
 421         int pad1;                       /* Needed for 64 bit alignment */
 422         sndrv_pcm_uframes_t hw_ptr;     /* RO: hw ptr (0...boundary-1) */
 423         struct timespec tstamp;         /* Timestamp */
 424         enum sndrv_pcm_state suspended_state; /* RO: suspended stream state */
 425 };
 426
 427 struct sndrv_pcm_mmap_control {
 428         sndrv_pcm_uframes_t appl_ptr;   /* RW: appl ptr (0...boundary-1) */
 429         sndrv_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 sndrv_pcm_sync_ptr {
 437         unsigned int flags;
 438         union {
 439                 struct sndrv_pcm_mmap_status status;
 440                 unsigned char reserved[64];
 441         } s;
 442         union {
 443                 struct sndrv_pcm_mmap_control control;
 444                 unsigned char reserved[64];
 445         } c;
 446 };
 447
 448 struct sndrv_xferi {
 449         sndrv_pcm_sframes_t result;
 450         void __user *buf;
 451         sndrv_pcm_uframes_t frames;
 452 };
 453
 454 struct sndrv_xfern {
 455         sndrv_pcm_sframes_t result;
 456         void __user * __user *bufs;
 457         sndrv_pcm_uframes_t frames;
 458 };
 459
 460 enum {
 461         SNDRV_PCM_IOCTL_PVERSION = _IOR('A', 0x00, int),
 462         SNDRV_PCM_IOCTL_INFO = _IOR('A', 0x01, struct sndrv_pcm_info),
 463         SNDRV_PCM_IOCTL_TSTAMP = _IOW('A', 0x02, int),
 464         SNDRV_PCM_IOCTL_HW_REFINE = _IOWR('A', 0x10, struct sndrv_pcm_hw_params),
 465         SNDRV_PCM_IOCTL_HW_PARAMS = _IOWR('A', 0x11, struct sndrv_pcm_hw_params),
 466         SNDRV_PCM_IOCTL_HW_FREE = _IO('A', 0x12),
 467         SNDRV_PCM_IOCTL_SW_PARAMS = _IOWR('A', 0x13, struct sndrv_pcm_sw_params),
 468         SNDRV_PCM_IOCTL_STATUS = _IOR('A', 0x20, struct sndrv_pcm_status),
 469         SNDRV_PCM_IOCTL_DELAY = _IOR('A', 0x21, sndrv_pcm_sframes_t),
 470         SNDRV_PCM_IOCTL_HWSYNC = _IO('A', 0x22),
 471         SNDRV_PCM_IOCTL_SYNC_PTR = _IOWR('A', 0x23, struct sndrv_pcm_sync_ptr),
 472         SNDRV_PCM_IOCTL_CHANNEL_INFO = _IOR('A', 0x32, struct sndrv_pcm_channel_info),
 473         SNDRV_PCM_IOCTL_PREPARE = _IO('A', 0x40),
 474         SNDRV_PCM_IOCTL_RESET = _IO('A', 0x41),
 475         SNDRV_PCM_IOCTL_START = _IO('A', 0x42),
 476         SNDRV_PCM_IOCTL_DROP = _IO('A', 0x43),
 477         SNDRV_PCM_IOCTL_DRAIN = _IO('A', 0x44),
 478         SNDRV_PCM_IOCTL_PAUSE = _IOW('A', 0x45, int),
 479         SNDRV_PCM_IOCTL_REWIND = _IOW('A', 0x46, sndrv_pcm_uframes_t),
 480         SNDRV_PCM_IOCTL_RESUME = _IO('A', 0x47),
 481         SNDRV_PCM_IOCTL_XRUN = _IO('A', 0x48),
 482         SNDRV_PCM_IOCTL_FORWARD = _IOW('A', 0x49, sndrv_pcm_uframes_t),
 483         SNDRV_PCM_IOCTL_WRITEI_FRAMES = _IOW('A', 0x50, struct sndrv_xferi),
 484         SNDRV_PCM_IOCTL_READI_FRAMES = _IOR('A', 0x51, struct sndrv_xferi),
 485         SNDRV_PCM_IOCTL_WRITEN_FRAMES = _IOW('A', 0x52, struct sndrv_xfern),
 486         SNDRV_PCM_IOCTL_READN_FRAMES = _IOR('A', 0x53, struct sndrv_xfern),
 487         SNDRV_PCM_IOCTL_LINK = _IOW('A', 0x60, int),
 488         SNDRV_PCM_IOCTL_UNLINK = _IO('A', 0x61),
 489 };
 490
 491 /* Trick to make alsa-lib/acinclude.m4 happy */
 492 #define SNDRV_PCM_IOCTL_REWIND SNDRV_PCM_IOCTL_REWIND
 493
 494 /*****************************************************************************
 495  *                                                                           *
 496  *                            MIDI v1.0 interface                            *
 497  *                                                                           *
 498  *****************************************************************************/
 499
 500 /*
 501  *  Raw MIDI section - /dev/snd/midi??
 502  */
 503
 504 #define SNDRV_RAWMIDI_VERSION           SNDRV_PROTOCOL_VERSION(2, 0, 0)
 505
 506 enum sndrv_rawmidi_stream {
 507         SNDRV_RAWMIDI_STREAM_OUTPUT = 0,
 508         SNDRV_RAWMIDI_STREAM_INPUT,
 509         SNDRV_RAWMIDI_STREAM_LAST = SNDRV_RAWMIDI_STREAM_INPUT,
 510 };
 511
 512 #define SNDRV_RAWMIDI_INFO_OUTPUT               0x00000001
 513 #define SNDRV_RAWMIDI_INFO_INPUT                0x00000002
 514 #define SNDRV_RAWMIDI_INFO_DUPLEX               0x00000004
 515
 516 struct sndrv_rawmidi_info {
 517         unsigned int device;            /* RO/WR (control): device number */
 518         unsigned int subdevice;         /* RO/WR (control): subdevice number */
 519         enum sndrv_rawmidi_stream stream; /* WR: stream */
 520         int card;                       /* R: card number */
 521         unsigned int flags;             /* SNDRV_RAWMIDI_INFO_XXXX */
 522         unsigned char id[64];           /* ID (user selectable) */
 523         unsigned char name[80];         /* name of device */
 524         unsigned char subname[32];      /* name of active or selected subdevice */
 525         unsigned int subdevices_count;
 526         unsigned int subdevices_avail;
 527         unsigned char reserved[64];     /* reserved for future use */
 528 };
 529
 530 struct sndrv_rawmidi_params {
 531         enum sndrv_rawmidi_stream stream;
 532         size_t buffer_size;             /* queue size in bytes */
 533         size_t avail_min;               /* minimum avail bytes for wakeup */
 534         unsigned int no_active_sensing: 1; /* do not send active sensing byte in close() */
 535         unsigned char reserved[16];     /* reserved for future use */
 536 };
 537
 538 struct sndrv_rawmidi_status {
 539         enum sndrv_rawmidi_stream stream;
 540         struct timespec tstamp;         /* Timestamp */
 541         size_t avail;                   /* available bytes */
 542         size_t xruns;                   /* count of overruns since last status (in bytes) */
 543         unsigned char reserved[16];     /* reserved for future use */
 544 };
 545
 546 enum {
 547         SNDRV_RAWMIDI_IOCTL_PVERSION = _IOR('W', 0x00, int),
 548         SNDRV_RAWMIDI_IOCTL_INFO = _IOR('W', 0x01, struct sndrv_rawmidi_info),
 549         SNDRV_RAWMIDI_IOCTL_PARAMS = _IOWR('W', 0x10, struct sndrv_rawmidi_params),
 550         SNDRV_RAWMIDI_IOCTL_STATUS = _IOWR('W', 0x20, struct sndrv_rawmidi_status),
 551         SNDRV_RAWMIDI_IOCTL_DROP = _IOW('W', 0x30, int),
 552         SNDRV_RAWMIDI_IOCTL_DRAIN = _IOW('W', 0x31, int),
 553 };
 554
 555 /*
 556  *  Timer section - /dev/snd/timer
 557  */
 558
 559 #define SNDRV_TIMER_VERSION             SNDRV_PROTOCOL_VERSION(2, 0, 2)
 560
 561 enum sndrv_timer_class {
 562         SNDRV_TIMER_CLASS_NONE = -1,
 563         SNDRV_TIMER_CLASS_SLAVE = 0,
 564         SNDRV_TIMER_CLASS_GLOBAL,
 565         SNDRV_TIMER_CLASS_CARD,
 566         SNDRV_TIMER_CLASS_PCM,
 567         SNDRV_TIMER_CLASS_LAST = SNDRV_TIMER_CLASS_PCM,
 568 };
 569
 570 /* slave timer classes */
 571 enum sndrv_timer_slave_class {
 572         SNDRV_TIMER_SCLASS_NONE = 0,
 573         SNDRV_TIMER_SCLASS_APPLICATION,
 574         SNDRV_TIMER_SCLASS_SEQUENCER,           /* alias */
 575         SNDRV_TIMER_SCLASS_OSS_SEQUENCER,       /* alias */
 576         SNDRV_TIMER_SCLASS_LAST = SNDRV_TIMER_SCLASS_OSS_SEQUENCER,
 577 };
 578
 579 /* global timers (device member) */
 580 #define SNDRV_TIMER_GLOBAL_SYSTEM       0
 581 #define SNDRV_TIMER_GLOBAL_RTC          1
 582
 583 /* info flags */
 584 #define SNDRV_TIMER_FLG_SLAVE           (1<<0)  /* cannot be controlled */
 585
 586 struct sndrv_timer_id {
 587         enum sndrv_timer_class dev_class;
 588         enum sndrv_timer_slave_class dev_sclass;
 589         int card;
 590         int device;
 591         int subdevice;
 592 };
 593
 594 struct sndrv_timer_ginfo {
 595         struct sndrv_timer_id tid;      /* requested timer ID */
 596         unsigned int flags;             /* timer flags - SNDRV_TIMER_FLG_* */
 597         int card;                       /* card number */
 598         unsigned char id[64];           /* timer identification */
 599         unsigned char name[80];         /* timer name */
 600         unsigned long reserved0;        /* reserved for future use */
 601         unsigned long resolution;       /* average period resolution in ns */
 602         unsigned long resolution_min;   /* minimal period resolution in ns */
 603         unsigned long resolution_max;   /* maximal period resolution in ns */
 604         unsigned int clients;           /* active timer clients */
 605         unsigned char reserved[32];
 606 };
 607
 608 struct sndrv_timer_gparams {
 609         struct sndrv_timer_id tid;      /* requested timer ID */
 610         unsigned long period_num;       /* requested precise period duration (in seconds) - numerator */
 611         unsigned long period_den;       /* requested precise period duration (in seconds) - denominator */
 612         unsigned char reserved[32];
 613 };
 614
 615 struct sndrv_timer_gstatus {
 616         struct sndrv_timer_id tid;      /* requested timer ID */
 617         unsigned long resolution;       /* current period resolution in ns */
 618         unsigned long resolution_num;   /* precise current period resolution (in seconds) - numerator */
 619         unsigned long resolution_den;   /* precise current period resolution (in seconds) - denominator */
 620         unsigned char reserved[32];
 621 };
 622
 623 struct sndrv_timer_select {
 624         struct sndrv_timer_id id;       /* bind to timer ID */
 625         unsigned char reserved[32];     /* reserved */
 626 };
 627
 628 struct sndrv_timer_info {
 629         unsigned int flags;             /* timer flags - SNDRV_TIMER_FLG_* */
 630         int card;                       /* card number */
 631         unsigned char id[64];           /* timer identificator */
 632         unsigned char name[80];         /* timer name */
 633         unsigned long reserved0;        /* reserved for future use */
 634         unsigned long resolution;       /* average period resolution in ns */
 635         unsigned char reserved[64];     /* reserved */
 636 };
 637
 638 #define SNDRV_TIMER_PSFLG_AUTO          (1<<0)  /* auto start, otherwise one-shot */
 639 #define SNDRV_TIMER_PSFLG_EXCLUSIVE     (1<<1)  /* exclusive use, precise start/stop/pause/continue */
 640 #define SNDRV_TIMER_PSFLG_EARLY_EVENT   (1<<2)  /* write early event to the poll queue */
 641
 642 struct sndrv_timer_params {
 643         unsigned int flags;             /* flags - SNDRV_MIXER_PSFLG_* */
 644         unsigned int ticks;             /* requested resolution in ticks */
 645         unsigned int queue_size;        /* total size of queue (32-1024) */
 646         unsigned int reserved0;         /* reserved, was: failure locations */
 647         unsigned int filter;            /* event filter (bitmask of SNDRV_TIMER_EVENT_*) */
 648         unsigned char reserved[60];     /* reserved */
 649 };
 650
 651 struct sndrv_timer_status {
 652         struct timespec tstamp;         /* Timestamp - last update */
 653         unsigned int resolution;        /* current period resolution in ns */
 654         unsigned int lost;              /* counter of master tick lost */
 655         unsigned int overrun;           /* count of read queue overruns */
 656         unsigned int queue;             /* used queue size */
 657         unsigned char reserved[64];     /* reserved */
 658 };
 659
 660 enum {
 661         SNDRV_TIMER_IOCTL_PVERSION = _IOR('T', 0x00, int),
 662         SNDRV_TIMER_IOCTL_NEXT_DEVICE = _IOWR('T', 0x01, struct sndrv_timer_id),
 663         SNDRV_TIMER_IOCTL_TREAD = _IOW('T', 0x02, int),
 664         SNDRV_TIMER_IOCTL_GINFO = _IOWR('T', 0x03, struct sndrv_timer_ginfo),
 665         SNDRV_TIMER_IOCTL_GPARAMS = _IOW('T', 0x04, struct sndrv_timer_gparams),
 666         SNDRV_TIMER_IOCTL_GSTATUS = _IOWR('T', 0x05, struct sndrv_timer_gstatus),
 667         SNDRV_TIMER_IOCTL_SELECT = _IOW('T', 0x10, struct sndrv_timer_select),
 668         SNDRV_TIMER_IOCTL_INFO = _IOR('T', 0x11, struct sndrv_timer_info),
 669         SNDRV_TIMER_IOCTL_PARAMS = _IOW('T', 0x12, struct sndrv_timer_params),
 670         SNDRV_TIMER_IOCTL_STATUS = _IOR('T', 0x14, struct sndrv_timer_status),
 671         SNDRV_TIMER_IOCTL_START = _IO('T', 0x20),
 672         SNDRV_TIMER_IOCTL_STOP = _IO('T', 0x21),
 673         SNDRV_TIMER_IOCTL_CONTINUE = _IO('T', 0x22),
 674         SNDRV_TIMER_IOCTL_PAUSE = _IO('T', 0x23),
 675 };
 676
 677 struct sndrv_timer_read {
 678         unsigned int resolution;
 679         unsigned int ticks;
 680 };
 681
 682 enum sndrv_timer_event {
 683         SNDRV_TIMER_EVENT_RESOLUTION = 0,       /* val = resolution in ns */
 684         SNDRV_TIMER_EVENT_TICK,                 /* val = ticks */
 685         SNDRV_TIMER_EVENT_START,                /* val = resolution in ns */
 686         SNDRV_TIMER_EVENT_STOP,                 /* val = 0 */
 687         SNDRV_TIMER_EVENT_CONTINUE,             /* val = resolution in ns */
 688         SNDRV_TIMER_EVENT_PAUSE,                /* val = 0 */
 689         SNDRV_TIMER_EVENT_EARLY,                /* val = 0, early event */
 690         /* master timer events for slave timer instances */
 691         SNDRV_TIMER_EVENT_MSTART = SNDRV_TIMER_EVENT_START + 10,
 692         SNDRV_TIMER_EVENT_MSTOP = SNDRV_TIMER_EVENT_STOP + 10,
 693         SNDRV_TIMER_EVENT_MCONTINUE = SNDRV_TIMER_EVENT_CONTINUE + 10,
 694         SNDRV_TIMER_EVENT_MPAUSE = SNDRV_TIMER_EVENT_PAUSE + 10,
 695 };
 696
 697 struct sndrv_timer_tread {
 698         enum sndrv_timer_event event;
 699         struct timespec tstamp;
 700         unsigned int val;
 701 };
 702
 703 /****************************************************************************
 704  *                                                                          *
 705  *        Section for driver control interface - /dev/snd/control?          *
 706  *                                                                          *
 707  ****************************************************************************/
 708
 709 #define SNDRV_CTL_VERSION               SNDRV_PROTOCOL_VERSION(2, 0, 3)
 710
 711 struct sndrv_ctl_card_info {
 712         int card;                       /* card number */
 713         int pad;                        /* reserved for future (was type) */
 714         unsigned char id[16];           /* ID of card (user selectable) */
 715         unsigned char driver[16];       /* Driver name */
 716         unsigned char name[32];         /* Short name of soundcard */
 717         unsigned char longname[80];     /* name + info text about soundcard */
 718         unsigned char reserved_[16];    /* reserved for future (was ID of mixer) */
 719         unsigned char mixername[80];    /* visual mixer identification */
 720         unsigned char components[80];   /* card components / fine identification, delimited with one space (AC97 etc..) */
 721         unsigned char reserved[48];     /* reserved for future */
 722 };
 723
 724 enum sndrv_ctl_elem_type {
 725         SNDRV_CTL_ELEM_TYPE_NONE = 0,           /* invalid */
 726         SNDRV_CTL_ELEM_TYPE_BOOLEAN,            /* boolean type */
 727         SNDRV_CTL_ELEM_TYPE_INTEGER,            /* integer type */
 728         SNDRV_CTL_ELEM_TYPE_ENUMERATED,         /* enumerated type */
 729         SNDRV_CTL_ELEM_TYPE_BYTES,              /* byte array */
 730         SNDRV_CTL_ELEM_TYPE_IEC958,             /* IEC958 (S/PDIF) setup */
 731         SNDRV_CTL_ELEM_TYPE_INTEGER64,          /* 64-bit integer type */
 732         SNDRV_CTL_ELEM_TYPE_LAST = SNDRV_CTL_ELEM_TYPE_INTEGER64,
 733 };
 734
 735 enum sndrv_ctl_elem_iface {
 736         SNDRV_CTL_ELEM_IFACE_CARD = 0,          /* global control */
 737         SNDRV_CTL_ELEM_IFACE_HWDEP,             /* hardware dependent device */
 738         SNDRV_CTL_ELEM_IFACE_MIXER,             /* virtual mixer device */
 739         SNDRV_CTL_ELEM_IFACE_PCM,               /* PCM device */
 740         SNDRV_CTL_ELEM_IFACE_RAWMIDI,           /* RawMidi device */
 741         SNDRV_CTL_ELEM_IFACE_TIMER,             /* timer device */
 742         SNDRV_CTL_ELEM_IFACE_SEQUENCER,         /* sequencer client */
 743         SNDRV_CTL_ELEM_IFACE_LAST = SNDRV_CTL_ELEM_IFACE_SEQUENCER,
 744 };
 745
 746 #define SNDRV_CTL_ELEM_ACCESS_READ              (1<<0)
 747 #define SNDRV_CTL_ELEM_ACCESS_WRITE             (1<<1)
 748 #define SNDRV_CTL_ELEM_ACCESS_READWRITE         (SNDRV_CTL_ELEM_ACCESS_READ|SNDRV_CTL_ELEM_ACCESS_WRITE)
 749 #define SNDRV_CTL_ELEM_ACCESS_VOLATILE          (1<<2)  /* control value may be changed without a notification */
 750 #define SNDRV_CTL_ELEM_ACCESS_TIMESTAMP         (1<<2)  /* when was control changed */
 751 #define SNDRV_CTL_ELEM_ACCESS_INACTIVE          (1<<8)  /* control does actually nothing, but may be updated */
 752 #define SNDRV_CTL_ELEM_ACCESS_LOCK              (1<<9)  /* write lock */
 753 #define SNDRV_CTL_ELEM_ACCESS_OWNER             (1<<10) /* write lock owner */
 754 #define SNDRV_CTL_ELEM_ACCESS_USER              (1<<29) /* user space element */
 755 #define SNDRV_CTL_ELEM_ACCESS_DINDIRECT         (1<<30) /* indirect access for matrix dimensions in the info structure */
 756 #define SNDRV_CTL_ELEM_ACCESS_INDIRECT          (1<<31) /* indirect access for element value in the value structure */
 757
 758 /* for further details see the ACPI and PCI power management specification */
 759 #define SNDRV_CTL_POWER_D0              0x0000  /* full On */
 760 #define SNDRV_CTL_POWER_D1              0x0100  /* partial On */
 761 #define SNDRV_CTL_POWER_D2              0x0200  /* partial On */
 762 #define SNDRV_CTL_POWER_D3              0x0300  /* Off */
 763 #define SNDRV_CTL_POWER_D3hot           (SNDRV_CTL_POWER_D3|0x0000)     /* Off, with power */
 764 #define SNDRV_CTL_POWER_D3cold          (SNDRV_CTL_POWER_D3|0x0001)     /* Off, without power */
 765
 766 struct sndrv_ctl_elem_id {
 767         unsigned int numid;             /* numeric identifier, zero = invalid */
 768         enum sndrv_ctl_elem_iface iface; /* interface identifier */
 769         unsigned int device;            /* device/client number */
 770         unsigned int subdevice;         /* subdevice (substream) number */
 771         unsigned char name[44];         /* ASCII name of item */
 772         unsigned int index;             /* index of item */
 773 };
 774
 775 struct sndrv_ctl_elem_list {
 776         unsigned int offset;            /* W: first element ID to get */
 777         unsigned int space;             /* W: count of element IDs to get */
 778         unsigned int used;              /* R: count of element IDs set */
 779         unsigned int count;             /* R: count of all elements */
 780         struct sndrv_ctl_elem_id __user *pids; /* R: IDs */
 781         unsigned char reserved[50];
 782 };
 783
 784 struct sndrv_ctl_elem_info {
 785         struct sndrv_ctl_elem_id id;    /* W: element ID */
 786         enum sndrv_ctl_elem_type type;  /* R: value type - SNDRV_CTL_ELEM_TYPE_* */
 787         unsigned int access;            /* R: value access (bitmask) - SNDRV_CTL_ELEM_ACCESS_* */
 788         unsigned int count;             /* count of values */
 789         pid_t owner;                    /* owner's PID of this control */
 790         union {
 791                 struct {
 792                         long min;               /* R: minimum value */
 793                         long max;               /* R: maximum value */
 794                         long step;              /* R: step (0 variable) */
 795                 } integer;
 796                 struct {
 797                         long long min;          /* R: minimum value */
 798                         long long max;          /* R: maximum value */
 799                         long long step;         /* R: step (0 variable) */
 800                 } integer64;
 801                 struct {
 802                         unsigned int items;     /* R: number of items */
 803                         unsigned int item;      /* W: item number */
 804                         char name[64];          /* R: value name */
 805                 } enumerated;
 806                 unsigned char reserved[128];
 807         } value;
 808         union {
 809                 unsigned short d[4];            /* dimensions */
 810                 unsigned short *d_ptr;          /* indirect */
 811         } dimen;
 812         unsigned char reserved[64-4*sizeof(unsigned short)];
 813 };
 814
 815 struct sndrv_ctl_elem_value {
 816         struct sndrv_ctl_elem_id id;    /* W: element ID */
 817         unsigned int indirect: 1;       /* W: use indirect pointer (xxx_ptr member) */
 818         union {
 819                 union {
 820                         long value[128];
 821                         long *value_ptr;
 822                 } integer;
 823                 union {
 824                         long long value[64];
 825                         long long *value_ptr;
 826                 } integer64;
 827                 union {
 828                         unsigned int item[128];
 829                         unsigned int *item_ptr;
 830                 } enumerated;
 831                 union {
 832                         unsigned char data[512];
 833                         unsigned char *data_ptr;
 834                 } bytes;
 835                 struct sndrv_aes_iec958 iec958;
 836         } value;                /* RO */
 837         struct timespec tstamp;
 838         unsigned char reserved[128-sizeof(struct timespec)];
 839 };
 840
 841 enum {
 842         SNDRV_CTL_IOCTL_PVERSION = _IOR('U', 0x00, int),
 843         SNDRV_CTL_IOCTL_CARD_INFO = _IOR('U', 0x01, struct sndrv_ctl_card_info),
 844         SNDRV_CTL_IOCTL_ELEM_LIST = _IOWR('U', 0x10, struct sndrv_ctl_elem_list),
 845         SNDRV_CTL_IOCTL_ELEM_INFO = _IOWR('U', 0x11, struct sndrv_ctl_elem_info),
 846         SNDRV_CTL_IOCTL_ELEM_READ = _IOWR('U', 0x12, struct sndrv_ctl_elem_value),
 847         SNDRV_CTL_IOCTL_ELEM_WRITE = _IOWR('U', 0x13, struct sndrv_ctl_elem_value),
 848         SNDRV_CTL_IOCTL_ELEM_LOCK = _IOW('U', 0x14, struct sndrv_ctl_elem_id),
 849         SNDRV_CTL_IOCTL_ELEM_UNLOCK = _IOW('U', 0x15, struct sndrv_ctl_elem_id),
 850         SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS = _IOWR('U', 0x16, int),
 851         SNDRV_CTL_IOCTL_ELEM_ADD = _IOWR('U', 0x17, struct sndrv_ctl_elem_info),
 852         SNDRV_CTL_IOCTL_ELEM_REPLACE = _IOWR('U', 0x18, struct sndrv_ctl_elem_info),
 853         SNDRV_CTL_IOCTL_ELEM_REMOVE = _IOWR('U', 0x19, struct sndrv_ctl_elem_id),
 854         SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE = _IOWR('U', 0x20, int),
 855         SNDRV_CTL_IOCTL_HWDEP_INFO = _IOR('U', 0x21, struct sndrv_hwdep_info),
 856         SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE = _IOR('U', 0x30, int),
 857         SNDRV_CTL_IOCTL_PCM_INFO = _IOWR('U', 0x31, struct sndrv_pcm_info),
 858         SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE = _IOW('U', 0x32, int),
 859         SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE = _IOWR('U', 0x40, int),
 860         SNDRV_CTL_IOCTL_RAWMIDI_INFO = _IOWR('U', 0x41, struct sndrv_rawmidi_info),
 861         SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE = _IOW('U', 0x42, int),
 862         SNDRV_CTL_IOCTL_POWER = _IOWR('U', 0xd0, int),
 863         SNDRV_CTL_IOCTL_POWER_STATE = _IOR('U', 0xd1, int),
 864 };
 865
 866 /*
 867  *  Read interface.
 868  */
 869
 870 enum sndrv_ctl_event_type {
 871         SNDRV_CTL_EVENT_ELEM = 0,
 872         SNDRV_CTL_EVENT_LAST = SNDRV_CTL_EVENT_ELEM,
 873 };
 874
 875 #define SNDRV_CTL_EVENT_MASK_VALUE      (1<<0)  /* element value was changed */
 876 #define SNDRV_CTL_EVENT_MASK_INFO       (1<<1)  /* element info was changed */
 877 #define SNDRV_CTL_EVENT_MASK_ADD        (1<<2)  /* element was added */
 878 #define SNDRV_CTL_EVENT_MASK_REMOVE     (~0U)   /* element was removed */
 879
 880 struct sndrv_ctl_event {
 881         enum sndrv_ctl_event_type type; /* event type - SNDRV_CTL_EVENT_* */
 882         union {
 883                 struct {
 884                         unsigned int mask;
 885                         struct sndrv_ctl_elem_id id;
 886                 } elem;
 887                 unsigned char data8[60];
 888         } data;
 889 };
 890
 891 /*
 892  *  Control names
 893  */
 894
 895 #define SNDRV_CTL_NAME_NONE                             ""
 896 #define SNDRV_CTL_NAME_PLAYBACK                         "Playback "
 897 #define SNDRV_CTL_NAME_CAPTURE                          "Capture "
 898
 899 #define SNDRV_CTL_NAME_IEC958_NONE                      ""
 900 #define SNDRV_CTL_NAME_IEC958_SWITCH                    "Switch"
 901 #define SNDRV_CTL_NAME_IEC958_VOLUME                    "Volume"
 902 #define SNDRV_CTL_NAME_IEC958_DEFAULT                   "Default"
 903 #define SNDRV_CTL_NAME_IEC958_MASK                      "Mask"
 904 #define SNDRV_CTL_NAME_IEC958_CON_MASK                  "Con Mask"
 905 #define SNDRV_CTL_NAME_IEC958_PRO_MASK                  "Pro Mask"
 906 #define SNDRV_CTL_NAME_IEC958_PCM_STREAM                "PCM Stream"
 907 #define SNDRV_CTL_NAME_IEC958(expl,direction,what)      "IEC958 " expl SNDRV_CTL_NAME_##direction SNDRV_CTL_NAME_IEC958_##what
 908
 909 /*
 910  *
 911  */
 912
 913 struct sndrv_xferv {
 914         const struct iovec *vector;
 915         unsigned long count;
 916 };
 917
 918 enum {
 919         SNDRV_IOCTL_READV = _IOW('K', 0x00, struct sndrv_xferv),
 920         SNDRV_IOCTL_WRITEV = _IOW('K', 0x01, struct sndrv_xferv),
 921 };
 922
 923 #endif /* __SOUND_ASOUND_H */