LXR linux/include/sound/asound.h

   1/*
   2 *  Advanced Linux Sound Architecture - ALSA - Driver
   3 *  Copyright (c) 1994-2003 by Jaroslav Kysela <perex@perex.cz>,
   4 *                             Abramo Bagnara <abramo@alsa-project.org>
   5 *
   6 *
   7 *   This program is free software; you can redistribute it and/or modify
   8 *   it under the terms of the GNU General Public License as published by
   9 *   the Free Software Foundation; either version 2 of the License, or
  10 *   (at your option) any later version.
  11 *
  12 *   This program is distributed in the hope that it will be useful,
  13 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 *   GNU General Public License for more details.
  16 *
  17 *   You should have received a copy of the GNU General Public License
  18 *   along with this program; if not, write to the Free Software
  19 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  20 *
  21 */
  22
  23#ifndef __SOUND_ASOUND_H
  24#define __SOUND_ASOUND_H
  25
  26#ifdef __KERNEL__
  27#include <linux/ioctl.h>
  28#include <linux/types.h>
  29#include <linux/time.h>
  30#include <asm/byteorder.h>
  31
  32#ifdef  __LITTLE_ENDIAN
  33#define SNDRV_LITTLE_ENDIAN
  34#else
  35#ifdef __BIG_ENDIAN
  36#define SNDRV_BIG_ENDIAN
  37#else
  38#error "Unsupported endian..."
  39#endif
  40#endif
  41
  42#endif /* __KERNEL__ **/
  43
  44/*
  45 *  protocol version
  46 */
  47
  48#define SNDRV_PROTOCOL_VERSION(major, minor, subminor) (((major)<<16)|((minor)<<8)|(subminor))
  49#define SNDRV_PROTOCOL_MAJOR(version) (((version)>>16)&0xffff)
  50#define SNDRV_PROTOCOL_MINOR(version) (((version)>>8)&0xff)
  51#define SNDRV_PROTOCOL_MICRO(version) ((version)&0xff)
  52#define SNDRV_PROTOCOL_INCOMPATIBLE(kversion, uversion) \
  53        (SNDRV_PROTOCOL_MAJOR(kversion) != SNDRV_PROTOCOL_MAJOR(uversion) || \
  54         (SNDRV_PROTOCOL_MAJOR(kversion) == SNDRV_PROTOCOL_MAJOR(uversion) && \
  55           SNDRV_PROTOCOL_MINOR(kversion) != SNDRV_PROTOCOL_MINOR(uversion)))
  56
  57/****************************************************************************
  58 *                                                                          *
  59 *        Digital audio interface                                           *
  60 *                                                                          *
  61 ****************************************************************************/
  62
  63struct snd_aes_iec958 {
  64        unsigned char status[24];       /* AES/IEC958 channel status bits */
  65        unsigned char subcode[147];     /* AES/IEC958 subcode bits */
  66        unsigned char pad;              /* nothing */
  67        unsigned char dig_subframe[4];  /* AES/IEC958 subframe bits */
  68};
  69
  70/****************************************************************************
  71 *                                                                          *
  72 *      Section for driver hardware dependent interface - /dev/snd/hw?      *
  73 *                                                                          *
  74 ****************************************************************************/
  75
  76#define SNDRV_HWDEP_VERSION             SNDRV_PROTOCOL_VERSION(1, 0, 1)
  77
  78enum {
  79        SNDRV_HWDEP_IFACE_OPL2 = 0,
  80        SNDRV_HWDEP_IFACE_OPL3,
  81        SNDRV_HWDEP_IFACE_OPL4,
  82        SNDRV_HWDEP_IFACE_SB16CSP,      /* Creative Signal Processor */
  83        SNDRV_HWDEP_IFACE_EMU10K1,      /* FX8010 processor in EMU10K1 chip */
  84        SNDRV_HWDEP_IFACE_YSS225,       /* Yamaha FX processor */
  85        SNDRV_HWDEP_IFACE_ICS2115,      /* Wavetable synth */
  86        SNDRV_HWDEP_IFACE_SSCAPE,       /* Ensoniq SoundScape ISA card (MC68EC000) */
  87        SNDRV_HWDEP_IFACE_VX,           /* Digigram VX cards */
  88        SNDRV_HWDEP_IFACE_MIXART,       /* Digigram miXart cards */
  89        SNDRV_HWDEP_IFACE_USX2Y,        /* Tascam US122, US224 & US428 usb */
  90        SNDRV_HWDEP_IFACE_EMUX_WAVETABLE, /* EmuX wavetable */  
  91        SNDRV_HWDEP_IFACE_BLUETOOTH,    /* Bluetooth audio */
  92        SNDRV_HWDEP_IFACE_USX2Y_PCM,    /* Tascam US122, US224 & US428 rawusb pcm */
  93        SNDRV_HWDEP_IFACE_PCXHR,        /* Digigram PCXHR */
  94        SNDRV_HWDEP_IFACE_SB_RC,        /* SB Extigy/Audigy2NX remote control */
  95        SNDRV_HWDEP_IFACE_HDA,          /* HD-audio */
  96        SNDRV_HWDEP_IFACE_USB_STREAM,   /* direct access to usb stream */
  97
  98        /* Don't forget to change the following: */
  99        SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_USB_STREAM
 100};
 101
 102struct 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 */
 112struct 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
 121struct 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
 129enum {
 130        SNDRV_HWDEP_IOCTL_PVERSION = _IOR ('H', 0x00, int),
 131        SNDRV_HWDEP_IOCTL_INFO = _IOR ('H', 0x01, struct snd_hwdep_info),
 132        SNDRV_HWDEP_IOCTL_DSP_STATUS = _IOR('H', 0x02, struct snd_hwdep_dsp_status),
 133        SNDRV_HWDEP_IOCTL_DSP_LOAD   = _IOW('H', 0x03, struct snd_hwdep_dsp_image)
 134};
 135
 136/*****************************************************************************
 137 *                                                                           *
 138 *             Digital Audio (PCM) interface - /dev/snd/pcm??                *
 139 *                                                                           *
 140 *****************************************************************************/
 141
 142#define SNDRV_PCM_VERSION               SNDRV_PROTOCOL_VERSION(2, 0, 9)
 143
 144typedef unsigned long snd_pcm_uframes_t;
 145typedef signed long snd_pcm_sframes_t;
 146
 147enum {
 148        SNDRV_PCM_CLASS_GENERIC = 0,    /* standard mono or stereo device */
 149        SNDRV_PCM_CLASS_MULTI,          /* multichannel device */
 150        SNDRV_PCM_CLASS_MODEM,          /* software modem class */
 151        SNDRV_PCM_CLASS_DIGITIZER,      /* digitizer class */
 152        /* Don't forget to change the following: */
 153        SNDRV_PCM_CLASS_LAST = SNDRV_PCM_CLASS_DIGITIZER,
 154};
 155
 156enum {
 157        SNDRV_PCM_SUBCLASS_GENERIC_MIX = 0, /* mono or stereo subdevices are mixed together */
 158        SNDRV_PCM_SUBCLASS_MULTI_MIX,   /* multichannel subdevices are mixed together */
 159        /* Don't forget to change the following: */
 160        SNDRV_PCM_SUBCLASS_LAST = SNDRV_PCM_SUBCLASS_MULTI_MIX,
 161};
 162
 163enum {
 164        SNDRV_PCM_STREAM_PLAYBACK = 0,
 165        SNDRV_PCM_STREAM_CAPTURE,
 166        SNDRV_PCM_STREAM_LAST = SNDRV_PCM_STREAM_CAPTURE,
 167};
 168
 169typedef int __bitwise snd_pcm_access_t;
 170#define SNDRV_PCM_ACCESS_MMAP_INTERLEAVED       ((__force snd_pcm_access_t) 0) /* interleaved mmap */
 171#define SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED    ((__force snd_pcm_access_t) 1) /* noninterleaved mmap */
 172#define SNDRV_PCM_ACCESS_MMAP_COMPLEX           ((__force snd_pcm_access_t) 2) /* complex mmap */
 173#define SNDRV_PCM_ACCESS_RW_INTERLEAVED         ((__force snd_pcm_access_t) 3) /* readi/writei */
 174#define SNDRV_PCM_ACCESS_RW_NONINTERLEAVED      ((__force snd_pcm_access_t) 4) /* readn/writen */
 175#define SNDRV_PCM_ACCESS_LAST           SNDRV_PCM_ACCESS_RW_NONINTERLEAVED
 176
 177typedef int __bitwise snd_pcm_format_t;
 178#define SNDRV_PCM_FORMAT_S8     ((__force snd_pcm_format_t) 0)
 179#define SNDRV_PCM_FORMAT_U8     ((__force snd_pcm_format_t) 1)
 180#define SNDRV_PCM_FORMAT_S16_LE ((__force snd_pcm_format_t) 2)
 181#define SNDRV_PCM_FORMAT_S16_BE ((__force snd_pcm_format_t) 3)
 182#define SNDRV_PCM_FORMAT_U16_LE ((__force snd_pcm_format_t) 4)
 183#define SNDRV_PCM_FORMAT_U16_BE ((__force snd_pcm_format_t) 5)
 184#define SNDRV_PCM_FORMAT_S24_LE ((__force snd_pcm_format_t) 6) /* low three bytes */
 185#define SNDRV_PCM_FORMAT_S24_BE ((__force snd_pcm_format_t) 7) /* low three bytes */
 186#define SNDRV_PCM_FORMAT_U24_LE ((__force snd_pcm_format_t) 8) /* low three bytes */
 187#define SNDRV_PCM_FORMAT_U24_BE ((__force snd_pcm_format_t) 9) /* low three bytes */
 188#define SNDRV_PCM_FORMAT_S32_LE ((__force snd_pcm_format_t) 10)
 189#define SNDRV_PCM_FORMAT_S32_BE ((__force snd_pcm_format_t) 11)
 190#define SNDRV_PCM_FORMAT_U32_LE ((__force snd_pcm_format_t) 12)
 191#define SNDRV_PCM_FORMAT_U32_BE ((__force snd_pcm_format_t) 13)
 192#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 */
 193#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 */
 194#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 */
 195#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 */
 196#define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE ((__force snd_pcm_format_t) 18) /* IEC-958 subframe, Little Endian */
 197#define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE ((__force snd_pcm_format_t) 19) /* IEC-958 subframe, Big Endian */
 198#define SNDRV_PCM_FORMAT_MU_LAW         ((__force snd_pcm_format_t) 20)
 199#define SNDRV_PCM_FORMAT_A_LAW          ((__force snd_pcm_format_t) 21)
 200#define SNDRV_PCM_FORMAT_IMA_ADPCM      ((__force snd_pcm_format_t) 22)
 201#define SNDRV_PCM_FORMAT_MPEG           ((__force snd_pcm_format_t) 23)
 202#define SNDRV_PCM_FORMAT_GSM            ((__force snd_pcm_format_t) 24)
 203#define SNDRV_PCM_FORMAT_SPECIAL        ((__force snd_pcm_format_t) 31)
 204#define SNDRV_PCM_FORMAT_S24_3LE        ((__force snd_pcm_format_t) 32) /* in three bytes */
 205#define SNDRV_PCM_FORMAT_S24_3BE        ((__force snd_pcm_format_t) 33) /* in three bytes */
 206#define SNDRV_PCM_FORMAT_U24_3LE        ((__force snd_pcm_format_t) 34) /* in three bytes */
 207#define SNDRV_PCM_FORMAT_U24_3BE        ((__force snd_pcm_format_t) 35) /* in three bytes */
 208#define SNDRV_PCM_FORMAT_S20_3LE        ((__force snd_pcm_format_t) 36) /* in three bytes */
 209#define SNDRV_PCM_FORMAT_S20_3BE        ((__force snd_pcm_format_t) 37) /* in three bytes */
 210#define SNDRV_PCM_FORMAT_U20_3LE        ((__force snd_pcm_format_t) 38) /* in three bytes */
 211#define SNDRV_PCM_FORMAT_U20_3BE        ((__force snd_pcm_format_t) 39) /* in three bytes */
 212#define SNDRV_PCM_FORMAT_S18_3LE        ((__force snd_pcm_format_t) 40) /* in three bytes */
 213#define SNDRV_PCM_FORMAT_S18_3BE        ((__force snd_pcm_format_t) 41) /* in three bytes */
 214#define SNDRV_PCM_FORMAT_U18_3LE        ((__force snd_pcm_format_t) 42) /* in three bytes */
 215#define SNDRV_PCM_FORMAT_U18_3BE        ((__force snd_pcm_format_t) 43) /* in three bytes */
 216#define SNDRV_PCM_FORMAT_LAST           SNDRV_PCM_FORMAT_U18_3BE
 217
 218#ifdef SNDRV_LITTLE_ENDIAN
 219#define SNDRV_PCM_FORMAT_S16            SNDRV_PCM_FORMAT_S16_LE
 220#define SNDRV_PCM_FORMAT_U16            SNDRV_PCM_FORMAT_U16_LE
 221#define SNDRV_PCM_FORMAT_S24            SNDRV_PCM_FORMAT_S24_LE
 222#define SNDRV_PCM_FORMAT_U24            SNDRV_PCM_FORMAT_U24_LE
 223#define SNDRV_PCM_FORMAT_S32            SNDRV_PCM_FORMAT_S32_LE
 224#define SNDRV_PCM_FORMAT_U32            SNDRV_PCM_FORMAT_U32_LE
 225#define SNDRV_PCM_FORMAT_FLOAT          SNDRV_PCM_FORMAT_FLOAT_LE
 226#define SNDRV_PCM_FORMAT_FLOAT64        SNDRV_PCM_FORMAT_FLOAT64_LE
 227#define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE
 228#endif
 229#ifdef SNDRV_BIG_ENDIAN
 230#define SNDRV_PCM_FORMAT_S16            SNDRV_PCM_FORMAT_S16_BE
 231#define SNDRV_PCM_FORMAT_U16            SNDRV_PCM_FORMAT_U16_BE
 232#define SNDRV_PCM_FORMAT_S24            SNDRV_PCM_FORMAT_S24_BE
 233#define SNDRV_PCM_FORMAT_U24            SNDRV_PCM_FORMAT_U24_BE
 234#define SNDRV_PCM_FORMAT_S32            SNDRV_PCM_FORMAT_S32_BE
 235#define SNDRV_PCM_FORMAT_U32            SNDRV_PCM_FORMAT_U32_BE
 236#define SNDRV_PCM_FORMAT_FLOAT          SNDRV_PCM_FORMAT_FLOAT_BE
 237#define SNDRV_PCM_FORMAT_FLOAT64        SNDRV_PCM_FORMAT_FLOAT64_BE
 238#define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE
 239#endif
 240
 241typedef int __bitwise snd_pcm_subformat_t;
 242#define SNDRV_PCM_SUBFORMAT_STD         ((__force snd_pcm_subformat_t) 0)
 243#define SNDRV_PCM_SUBFORMAT_LAST        SNDRV_PCM_SUBFORMAT_STD
 244
 245#define SNDRV_PCM_INFO_MMAP             0x00000001      /* hardware supports mmap */
 246#define SNDRV_PCM_INFO_MMAP_VALID       0x00000002      /* period data are valid during transfer */
 247#define SNDRV_PCM_INFO_DOUBLE           0x00000004      /* Double buffering needed for PCM start/stop */
 248#define SNDRV_PCM_INFO_BATCH            0x00000010      /* double buffering */
 249#define SNDRV_PCM_INFO_INTERLEAVED      0x00000100      /* channels are interleaved */
 250#define SNDRV_PCM_INFO_NONINTERLEAVED   0x00000200      /* channels are not interleaved */
 251#define SNDRV_PCM_INFO_COMPLEX          0x00000400      /* complex frame organization (mmap only) */
 252#define SNDRV_PCM_INFO_BLOCK_TRANSFER   0x00010000      /* hardware transfer block of samples */
 253#define SNDRV_PCM_INFO_OVERRANGE        0x00020000      /* hardware supports ADC (capture) overrange detection */
 254#define SNDRV_PCM_INFO_RESUME           0x00040000      /* hardware supports stream resume after suspend */
 255#define SNDRV_PCM_INFO_PAUSE            0x00080000      /* pause ioctl is supported */
 256#define SNDRV_PCM_INFO_HALF_DUPLEX      0x00100000      /* only half duplex */
 257#define SNDRV_PCM_INFO_JOINT_DUPLEX     0x00200000      /* playback and capture stream are somewhat correlated */
 258#define SNDRV_PCM_INFO_SYNC_START       0x00400000      /* pcm support some kind of sync go */
 259
 260typedef int __bitwise snd_pcm_state_t;
 261#define SNDRV_PCM_STATE_OPEN            ((__force snd_pcm_state_t) 0) /* stream is open */
 262#define SNDRV_PCM_STATE_SETUP           ((__force snd_pcm_state_t) 1) /* stream has a setup */
 263#define SNDRV_PCM_STATE_PREPARED        ((__force snd_pcm_state_t) 2) /* stream is ready to start */
 264#define SNDRV_PCM_STATE_RUNNING         ((__force snd_pcm_state_t) 3) /* stream is running */
 265#define SNDRV_PCM_STATE_XRUN            ((__force snd_pcm_state_t) 4) /* stream reached an xrun */
 266#define SNDRV_PCM_STATE_DRAINING        ((__force snd_pcm_state_t) 5) /* stream is draining */
 267#define SNDRV_PCM_STATE_PAUSED          ((__force snd_pcm_state_t) 6) /* stream is paused */
 268#define SNDRV_PCM_STATE_SUSPENDED       ((__force snd_pcm_state_t) 7) /* hardware is suspended */
 269#define SNDRV_PCM_STATE_DISCONNECTED    ((__force snd_pcm_state_t) 8) /* hardware is disconnected */
 270#define SNDRV_PCM_STATE_LAST            SNDRV_PCM_STATE_DISCONNECTED
 271
 272enum {
 273        SNDRV_PCM_MMAP_OFFSET_DATA = 0x00000000,
 274        SNDRV_PCM_MMAP_OFFSET_STATUS = 0x80000000,
 275        SNDRV_PCM_MMAP_OFFSET_CONTROL = 0x81000000,
 276};
 277
 278union snd_pcm_sync_id {
 279        unsigned char id[16];
 280        unsigned short id16[8];
 281        unsigned int id32[4];
 282};
 283
 284struct snd_pcm_info {
 285        unsigned int device;            /* RO/WR (control): device number */
 286        unsigned int subdevice;         /* RO/WR (control): subdevice number */
 287        int stream;                     /* RO/WR (control): stream direction */
 288        int card;                       /* R: card number */
 289        unsigned char id[64];           /* ID (user selectable) */
 290        unsigned char name[80];         /* name of this device */
 291        unsigned char subname[32];      /* subdevice name */
 292        int dev_class;                  /* SNDRV_PCM_CLASS_* */
 293        int dev_subclass;               /* SNDRV_PCM_SUBCLASS_* */
 294        unsigned int subdevices_count;
 295        unsigned int subdevices_avail;
 296        union snd_pcm_sync_id sync;     /* hardware synchronization ID */
 297        unsigned char reserved[64];     /* reserved for future... */
 298};
 299
 300typedef int snd_pcm_hw_param_t;
 301#define SNDRV_PCM_HW_PARAM_ACCESS       0       /* Access type */
 302#define SNDRV_PCM_HW_PARAM_FORMAT       1       /* Format */
 303#define SNDRV_PCM_HW_PARAM_SUBFORMAT    2       /* Subformat */
 304#define SNDRV_PCM_HW_PARAM_FIRST_MASK   SNDRV_PCM_HW_PARAM_ACCESS
 305#define SNDRV_PCM_HW_PARAM_LAST_MASK    SNDRV_PCM_HW_PARAM_SUBFORMAT
 306
 307#define SNDRV_PCM_HW_PARAM_SAMPLE_BITS  8       /* Bits per sample */
 308#define SNDRV_PCM_HW_PARAM_FRAME_BITS   9       /* Bits per frame */
 309#define SNDRV_PCM_HW_PARAM_CHANNELS     10      /* Channels */
 310#define SNDRV_PCM_HW_PARAM_RATE         11      /* Approx rate */
 311#define SNDRV_PCM_HW_PARAM_PERIOD_TIME  12      /* Approx distance between
 312                                                 * interrupts in us
 313                                                 */
 314#define SNDRV_PCM_HW_PARAM_PERIOD_SIZE  13      /* Approx frames between
 315                                                 * interrupts
 316                                                 */
 317#define SNDRV_PCM_HW_PARAM_PERIOD_BYTES 14      /* Approx bytes between
 318                                                 * interrupts
 319                                                 */
 320#define SNDRV_PCM_HW_PARAM_PERIODS      15      /* Approx interrupts per
 321                                                 * buffer
 322                                                 */
 323#define SNDRV_PCM_HW_PARAM_BUFFER_TIME  16      /* Approx duration of buffer
 324                                                 * in us
 325                                                 */
 326#define SNDRV_PCM_HW_PARAM_BUFFER_SIZE  17      /* Size of buffer in frames */
 327#define SNDRV_PCM_HW_PARAM_BUFFER_BYTES 18      /* Size of buffer in bytes */
 328#define SNDRV_PCM_HW_PARAM_TICK_TIME    19      /* Approx tick duration in us */
 329#define SNDRV_PCM_HW_PARAM_FIRST_INTERVAL       SNDRV_PCM_HW_PARAM_SAMPLE_BITS
 330#define SNDRV_PCM_HW_PARAM_LAST_INTERVAL        SNDRV_PCM_HW_PARAM_TICK_TIME
 331
 332#define SNDRV_PCM_HW_PARAMS_NORESAMPLE  (1<<0)  /* avoid rate resampling */
 333
 334struct snd_interval {
 335        unsigned int min, max;
 336        unsigned int openmin:1,
 337                     openmax:1,
 338                     integer:1,
 339                     empty:1;
 340};
 341
 342#define SNDRV_MASK_MAX  256
 343
 344struct snd_mask {
 345        u_int32_t bits[(SNDRV_MASK_MAX+31)/32];
 346};
 347
 348struct snd_pcm_hw_params {
 349        unsigned int flags;
 350        struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK - 
 351                               SNDRV_PCM_HW_PARAM_FIRST_MASK + 1];
 352        struct snd_mask mres[5];        /* reserved masks */
 353        struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL -
 354                                        SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];
 355        struct snd_interval ires[9];    /* reserved intervals */
 356        unsigned int rmask;             /* W: requested masks */
 357        unsigned int cmask;             /* R: changed masks */
 358        unsigned int info;              /* R: Info flags for returned setup */
 359        unsigned int msbits;            /* R: used most significant bits */
 360        unsigned int rate_num;          /* R: rate numerator */
 361        unsigned int rate_den;          /* R: rate denominator */
 362        snd_pcm_uframes_t fifo_size;    /* R: chip FIFO size in frames */
 363        unsigned char reserved[64];     /* reserved for future */
 364};
 365
 366enum {
 367        SNDRV_PCM_TSTAMP_NONE = 0,
 368        SNDRV_PCM_TSTAMP_ENABLE,
 369        SNDRV_PCM_TSTAMP_LAST = SNDRV_PCM_TSTAMP_ENABLE,
 370};
 371
 372struct snd_pcm_sw_params {
 373        int tstamp_mode;                        /* timestamp mode */
 374        unsigned int period_step;
 375        unsigned int sleep_min;                 /* min ticks to sleep */
 376        snd_pcm_uframes_t avail_min;            /* min avail frames for wakeup */
 377        snd_pcm_uframes_t xfer_align;           /* obsolete: xfer size need to be a multiple */
 378        snd_pcm_uframes_t start_threshold;      /* min hw_avail frames for automatic start */
 379        snd_pcm_uframes_t stop_threshold;       /* min avail frames for automatic stop */
 380        snd_pcm_uframes_t silence_threshold;    /* min distance from noise for silence filling */
 381        snd_pcm_uframes_t silence_size;         /* silence block size */
 382        snd_pcm_uframes_t boundary;             /* pointers wrap point */
 383        unsigned char reserved[64];             /* reserved for future */
 384};
 385
 386struct snd_pcm_channel_info {
 387        unsigned int channel;
 388        off_t offset;                   /* mmap offset */
 389        unsigned int first;             /* offset to first sample in bits */
 390        unsigned int step;              /* samples distance in bits */
 391};
 392
 393struct snd_pcm_status {
 394        snd_pcm_state_t state;          /* stream state */
 395        struct timespec trigger_tstamp; /* time when stream was started/stopped/paused */
 396        struct timespec tstamp;         /* reference timestamp */
 397        snd_pcm_uframes_t appl_ptr;     /* appl ptr */
 398        snd_pcm_uframes_t hw_ptr;       /* hw ptr */
 399        snd_pcm_sframes_t delay;        /* current delay in frames */
 400        snd_pcm_uframes_t avail;        /* number of frames available */
 401        snd_pcm_uframes_t avail_max;    /* max frames available on hw since last status */
 402        snd_pcm_uframes_t overrange;    /* count of ADC (capture) overrange detections from last status */
 403        snd_pcm_state_t suspended_state; /* suspended stream state */
 404        unsigned char reserved[60];     /* must be filled with zero */
 405};
 406
 407struct snd_pcm_mmap_status {
 408        snd_pcm_state_t state;          /* RO: state - SNDRV_PCM_STATE_XXXX */
 409        int pad1;                       /* Needed for 64 bit alignment */
 410        snd_pcm_uframes_t hw_ptr;       /* RO: hw ptr (0...boundary-1) */
 411        struct timespec tstamp;         /* Timestamp */
 412        snd_pcm_state_t suspended_state; /* RO: suspended stream state */
 413};
 414
 415struct snd_pcm_mmap_control {
 416        snd_pcm_uframes_t appl_ptr;     /* RW: appl ptr (0...boundary-1) */
 417        snd_pcm_uframes_t avail_min;    /* RW: min available frames for wakeup */
 418};
 419
 420#define SNDRV_PCM_SYNC_PTR_HWSYNC       (1<<0)  /* execute hwsync */
 421#define SNDRV_PCM_SYNC_PTR_APPL         (1<<1)  /* get appl_ptr from driver (r/w op) */
 422#define SNDRV_PCM_SYNC_PTR_AVAIL_MIN    (1<<2)  /* get avail_min from driver */
 423
 424struct snd_pcm_sync_ptr {
 425        unsigned int flags;
 426        union {
 427                struct snd_pcm_mmap_status status;
 428                unsigned char reserved[64];
 429        } s;
 430        union {
 431                struct snd_pcm_mmap_control control;
 432                unsigned char reserved[64];
 433        } c;
 434};
 435
 436struct snd_xferi {
 437        snd_pcm_sframes_t result;
 438        void __user *buf;
 439        snd_pcm_uframes_t frames;
 440};
 441
 442struct snd_xfern {
 443        snd_pcm_sframes_t result;
 444        void __user * __user *bufs;
 445        snd_pcm_uframes_t frames;
 446};
 447
 448enum {
 449        SNDRV_PCM_TSTAMP_TYPE_GETTIMEOFDAY = 0, /* gettimeofday equivalent */
 450        SNDRV_PCM_TSTAMP_TYPE_MONOTONIC,        /* posix_clock_monotonic equivalent */
 451        SNDRV_PCM_TSTAMP_TYPE_LAST = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC,
 452};
 453
 454enum {
 455        SNDRV_PCM_IOCTL_PVERSION = _IOR('A', 0x00, int),
 456        SNDRV_PCM_IOCTL_INFO = _IOR('A', 0x01, struct snd_pcm_info),
 457        SNDRV_PCM_IOCTL_TSTAMP = _IOW('A', 0x02, int),
 458        SNDRV_PCM_IOCTL_TTSTAMP = _IOW('A', 0x03, int),
 459        SNDRV_PCM_IOCTL_HW_REFINE = _IOWR('A', 0x10, struct snd_pcm_hw_params),
 460        SNDRV_PCM_IOCTL_HW_PARAMS = _IOWR('A', 0x11, struct snd_pcm_hw_params),
 461        SNDRV_PCM_IOCTL_HW_FREE = _IO('A', 0x12),
 462        SNDRV_PCM_IOCTL_SW_PARAMS = _IOWR('A', 0x13, struct snd_pcm_sw_params),
 463        SNDRV_PCM_IOCTL_STATUS = _IOR('A', 0x20, struct snd_pcm_status),
 464        SNDRV_PCM_IOCTL_DELAY = _IOR('A', 0x21, snd_pcm_sframes_t),
 465        SNDRV_PCM_IOCTL_HWSYNC = _IO('A', 0x22),
 466        SNDRV_PCM_IOCTL_SYNC_PTR = _IOWR('A', 0x23, struct snd_pcm_sync_ptr),
 467        SNDRV_PCM_IOCTL_CHANNEL_INFO = _IOR('A', 0x32, struct snd_pcm_channel_info),
 468        SNDRV_PCM_IOCTL_PREPARE = _IO('A', 0x40),
 469        SNDRV_PCM_IOCTL_RESET = _IO('A', 0x41),
 470        SNDRV_PCM_IOCTL_START = _IO('A', 0x42),
 471        SNDRV_PCM_IOCTL_DROP = _IO('A', 0x43),
 472        SNDRV_PCM_IOCTL_DRAIN = _IO('A', 0x44),
 473        SNDRV_PCM_IOCTL_PAUSE = _IOW('A', 0x45, int),
 474        SNDRV_PCM_IOCTL_REWIND = _IOW('A', 0x46, snd_pcm_uframes_t),
 475        SNDRV_PCM_IOCTL_RESUME = _IO('A', 0x47),
 476        SNDRV_PCM_IOCTL_XRUN = _IO('A', 0x48),
 477        SNDRV_PCM_IOCTL_FORWARD = _IOW('A', 0x49, snd_pcm_uframes_t),
 478        SNDRV_PCM_IOCTL_WRITEI_FRAMES = _IOW('A', 0x50, struct snd_xferi),
 479        SNDRV_PCM_IOCTL_READI_FRAMES = _IOR('A', 0x51, struct snd_xferi),
 480        SNDRV_PCM_IOCTL_WRITEN_FRAMES = _IOW('A', 0x52, struct snd_xfern),
 481        SNDRV_PCM_IOCTL_READN_FRAMES = _IOR('A', 0x53, struct snd_xfern),
 482        SNDRV_PCM_IOCTL_LINK = _IOW('A', 0x60, int),
 483        SNDRV_PCM_IOCTL_UNLINK = _IO('A', 0x61),
 484};
 485
 486/* Trick to make alsa-lib/acinclude.m4 happy */
 487#define SNDRV_PCM_IOCTL_REWIND SNDRV_PCM_IOCTL_REWIND
 488
 489/*****************************************************************************
 490 *                                                                           *
 491 *                            MIDI v1.0 interface                            *
 492 *                                                                           *
 493 *****************************************************************************/
 494
 495/*
 496 *  Raw MIDI section - /dev/snd/midi??
 497 */
 498
 499#define SNDRV_RAWMIDI_VERSION           SNDRV_PROTOCOL_VERSION(2, 0, 0)
 500
 501enum {
 502        SNDRV_RAWMIDI_STREAM_OUTPUT = 0,
 503        SNDRV_RAWMIDI_STREAM_INPUT,
 504        SNDRV_RAWMIDI_STREAM_LAST = SNDRV_RAWMIDI_STREAM_INPUT,
 505};
 506
 507#define SNDRV_RAWMIDI_INFO_OUTPUT               0x00000001
 508#define SNDRV_RAWMIDI_INFO_INPUT                0x00000002
 509#define SNDRV_RAWMIDI_INFO_DUPLEX               0x00000004
 510
 511struct snd_rawmidi_info {
 512        unsigned int device;            /* RO/WR (control): device number */
 513        unsigned int subdevice;         /* RO/WR (control): subdevice number */
 514        int stream;                     /* WR: stream */
 515        int card;                       /* R: card number */
 516        unsigned int flags;             /* SNDRV_RAWMIDI_INFO_XXXX */
 517        unsigned char id[64];           /* ID (user selectable) */
 518        unsigned char name[80];         /* name of device */
 519        unsigned char subname[32];      /* name of active or selected subdevice */
 520        unsigned int subdevices_count;
 521        unsigned int subdevices_avail;
 522        unsigned char reserved[64];     /* reserved for future use */
 523};
 524
 525struct snd_rawmidi_params {
 526        int stream;
 527        size_t buffer_size;             /* queue size in bytes */
 528        size_t avail_min;               /* minimum avail bytes for wakeup */
 529        unsigned int no_active_sensing: 1; /* do not send active sensing byte in close() */
 530        unsigned char reserved[16];     /* reserved for future use */
 531};
 532
 533struct snd_rawmidi_status {
 534        int stream;
 535        struct timespec tstamp;         /* Timestamp */
 536        size_t avail;                   /* available bytes */
 537        size_t xruns;                   /* count of overruns since last status (in bytes) */
 538        unsigned char reserved[16];     /* reserved for future use */
 539};
 540
 541enum {
 542        SNDRV_RAWMIDI_IOCTL_PVERSION = _IOR('W', 0x00, int),
 543        SNDRV_RAWMIDI_IOCTL_INFO = _IOR('W', 0x01, struct snd_rawmidi_info),
 544        SNDRV_RAWMIDI_IOCTL_PARAMS = _IOWR('W', 0x10, struct snd_rawmidi_params),
 545        SNDRV_RAWMIDI_IOCTL_STATUS = _IOWR('W', 0x20, struct snd_rawmidi_status),
 546        SNDRV_RAWMIDI_IOCTL_DROP = _IOW('W', 0x30, int),
 547        SNDRV_RAWMIDI_IOCTL_DRAIN = _IOW('W', 0x31, int),
 548};
 549
 550/*
 551 *  Timer section - /dev/snd/timer
 552 */
 553
 554#define SNDRV_TIMER_VERSION             SNDRV_PROTOCOL_VERSION(2, 0, 5)
 555
 556enum {
 557        SNDRV_TIMER_CLASS_NONE = -1,
 558        SNDRV_TIMER_CLASS_SLAVE = 0,
 559        SNDRV_TIMER_CLASS_GLOBAL,
 560        SNDRV_TIMER_CLASS_CARD,
 561        SNDRV_TIMER_CLASS_PCM,
 562        SNDRV_TIMER_CLASS_LAST = SNDRV_TIMER_CLASS_PCM,
 563};
 564
 565/* slave timer classes */
 566enum {
 567        SNDRV_TIMER_SCLASS_NONE = 0,
 568        SNDRV_TIMER_SCLASS_APPLICATION,
 569        SNDRV_TIMER_SCLASS_SEQUENCER,           /* alias */
 570        SNDRV_TIMER_SCLASS_OSS_SEQUENCER,       /* alias */
 571        SNDRV_TIMER_SCLASS_LAST = SNDRV_TIMER_SCLASS_OSS_SEQUENCER,
 572};
 573
 574/* global timers (device member) */
 575#define SNDRV_TIMER_GLOBAL_SYSTEM       0
 576#define SNDRV_TIMER_GLOBAL_RTC          1
 577#define SNDRV_TIMER_GLOBAL_HPET         2
 578
 579/* info flags */
 580#define SNDRV_TIMER_FLG_SLAVE           (1<<0)  /* cannot be controlled */
 581
 582struct snd_timer_id {
 583        int dev_class;  
 584        int dev_sclass;
 585        int card;
 586        int device;
 587        int subdevice;
 588};
 589
 590struct snd_timer_ginfo {
 591        struct snd_timer_id tid;        /* requested timer ID */
 592        unsigned int flags;             /* timer flags - SNDRV_TIMER_FLG_* */
 593        int card;                       /* card number */
 594        unsigned char id[64];           /* timer identification */
 595        unsigned char name[80];         /* timer name */
 596        unsigned long reserved0;        /* reserved for future use */
 597        unsigned long resolution;       /* average period resolution in ns */
 598        unsigned long resolution_min;   /* minimal period resolution in ns */
 599        unsigned long resolution_max;   /* maximal period resolution in ns */
 600        unsigned int clients;           /* active timer clients */
 601        unsigned char reserved[32];
 602};
 603
 604struct snd_timer_gparams {
 605        struct snd_timer_id tid;        /* requested timer ID */
 606        unsigned long period_num;       /* requested precise period duration (in seconds) - numerator */
 607        unsigned long period_den;       /* requested precise period duration (in seconds) - denominator */
 608        unsigned char reserved[32];
 609};
 610
 611struct snd_timer_gstatus {
 612        struct snd_timer_id tid;        /* requested timer ID */
 613        unsigned long resolution;       /* current period resolution in ns */
 614        unsigned long resolution_num;   /* precise current period resolution (in seconds) - numerator */
 615        unsigned long resolution_den;   /* precise current period resolution (in seconds) - denominator */
 616        unsigned char reserved[32];
 617};
 618
 619struct snd_timer_select {
 620        struct snd_timer_id id; /* bind to timer ID */
 621        unsigned char reserved[32];     /* reserved */
 622};
 623
 624struct snd_timer_info {
 625        unsigned int flags;             /* timer flags - SNDRV_TIMER_FLG_* */
 626        int card;                       /* card number */
 627        unsigned char id[64];           /* timer identificator */
 628        unsigned char name[80];         /* timer name */
 629        unsigned long reserved0;        /* reserved for future use */
 630        unsigned long resolution;       /* average period resolution in ns */
 631        unsigned char reserved[64];     /* reserved */
 632};
 633
 634#define SNDRV_TIMER_PSFLG_AUTO          (1<<0)  /* auto start, otherwise one-shot */
 635#define SNDRV_TIMER_PSFLG_EXCLUSIVE     (1<<1)  /* exclusive use, precise start/stop/pause/continue */
 636#define SNDRV_TIMER_PSFLG_EARLY_EVENT   (1<<2)  /* write early event to the poll queue */
 637
 638struct snd_timer_params {
 639        unsigned int flags;             /* flags - SNDRV_MIXER_PSFLG_* */
 640        unsigned int ticks;             /* requested resolution in ticks */
 641        unsigned int queue_size;        /* total size of queue (32-1024) */
 642        unsigned int reserved0;         /* reserved, was: failure locations */
 643        unsigned int filter;            /* event filter (bitmask of SNDRV_TIMER_EVENT_*) */
 644        unsigned char reserved[60];     /* reserved */
 645};
 646
 647struct snd_timer_status {
 648        struct timespec tstamp;         /* Timestamp - last update */
 649        unsigned int resolution;        /* current period resolution in ns */
 650        unsigned int lost;              /* counter of master tick lost */
 651        unsigned int overrun;           /* count of read queue overruns */
 652        unsigned int queue;             /* used queue size */
 653        unsigned char reserved[64];     /* reserved */
 654};
 655
 656enum {
 657        SNDRV_TIMER_IOCTL_PVERSION = _IOR('T', 0x00, int),
 658        SNDRV_TIMER_IOCTL_NEXT_DEVICE = _IOWR('T', 0x01, struct snd_timer_id),
 659        SNDRV_TIMER_IOCTL_TREAD = _IOW('T', 0x02, int),
 660        SNDRV_TIMER_IOCTL_GINFO = _IOWR('T', 0x03, struct snd_timer_ginfo),
 661        SNDRV_TIMER_IOCTL_GPARAMS = _IOW('T', 0x04, struct snd_timer_gparams),
 662        SNDRV_TIMER_IOCTL_GSTATUS = _IOWR('T', 0x05, struct snd_timer_gstatus),
 663        SNDRV_TIMER_IOCTL_SELECT = _IOW('T', 0x10, struct snd_timer_select),
 664        SNDRV_TIMER_IOCTL_INFO = _IOR('T', 0x11, struct snd_timer_info),
 665        SNDRV_TIMER_IOCTL_PARAMS = _IOW('T', 0x12, struct snd_timer_params),
 666        SNDRV_TIMER_IOCTL_STATUS = _IOR('T', 0x14, struct snd_timer_status),
 667        /* The following four ioctls are changed since 1.0.9 due to confliction */
 668        SNDRV_TIMER_IOCTL_START = _IO('T', 0xa0),
 669        SNDRV_TIMER_IOCTL_STOP = _IO('T', 0xa1),
 670        SNDRV_TIMER_IOCTL_CONTINUE = _IO('T', 0xa2),
 671        SNDRV_TIMER_IOCTL_PAUSE = _IO('T', 0xa3),
 672};
 673
 674struct snd_timer_read {
 675        unsigned int resolution;
 676        unsigned int ticks;
 677};
 678
 679enum {
 680        SNDRV_TIMER_EVENT_RESOLUTION = 0,       /* val = resolution in ns */
 681        SNDRV_TIMER_EVENT_TICK,                 /* val = ticks */
 682        SNDRV_TIMER_EVENT_START,                /* val = resolution in ns */
 683        SNDRV_TIMER_EVENT_STOP,                 /* val = 0 */
 684        SNDRV_TIMER_EVENT_CONTINUE,             /* val = resolution in ns */
 685        SNDRV_TIMER_EVENT_PAUSE,                /* val = 0 */
 686        SNDRV_TIMER_EVENT_EARLY,                /* val = 0, early event */
 687        SNDRV_TIMER_EVENT_SUSPEND,              /* val = 0 */
 688        SNDRV_TIMER_EVENT_RESUME,               /* val = resolution in ns */
 689        /* master timer events for slave timer instances */
 690        SNDRV_TIMER_EVENT_MSTART = SNDRV_TIMER_EVENT_START + 10,
 691        SNDRV_TIMER_EVENT_MSTOP = SNDRV_TIMER_EVENT_STOP + 10,
 692        SNDRV_TIMER_EVENT_MCONTINUE = SNDRV_TIMER_EVENT_CONTINUE + 10,
 693        SNDRV_TIMER_EVENT_MPAUSE = SNDRV_TIMER_EVENT_PAUSE + 10,
 694        SNDRV_TIMER_EVENT_MSUSPEND = SNDRV_TIMER_EVENT_SUSPEND + 10,
 695        SNDRV_TIMER_EVENT_MRESUME = SNDRV_TIMER_EVENT_RESUME + 10,
 696};
 697
 698struct snd_timer_tread {
 699        int event;
 700        struct timespec tstamp;
 701        unsigned int val;
 702};
 703
 704/****************************************************************************
 705 *                                                                          *
 706 *        Section for driver control interface - /dev/snd/control?          *
 707 *                                                                          *
 708 ****************************************************************************/
 709
 710#define SNDRV_CTL_VERSION               SNDRV_PROTOCOL_VERSION(2, 0, 6)
 711
 712struct snd_ctl_card_info {
 713        int card;                       /* card number */
 714        int pad;                        /* reserved for future (was type) */
 715        unsigned char id[16];           /* ID of card (user selectable) */
 716        unsigned char driver[16];       /* Driver name */
 717        unsigned char name[32];         /* Short name of soundcard */
 718        unsigned char longname[80];     /* name + info text about soundcard */
 719        unsigned char reserved_[16];    /* reserved for future (was ID of mixer) */
 720        unsigned char mixername[80];    /* visual mixer identification */
 721        unsigned char components[128];  /* card components / fine identification, delimited with one space (AC97 etc..) */
 722};
 723
 724typedef int __bitwise snd_ctl_elem_type_t;
 725#define SNDRV_CTL_ELEM_TYPE_NONE        ((__force snd_ctl_elem_type_t) 0) /* invalid */
 726#define SNDRV_CTL_ELEM_TYPE_BOOLEAN     ((__force snd_ctl_elem_type_t) 1) /* boolean type */
 727#define SNDRV_CTL_ELEM_TYPE_INTEGER     ((__force snd_ctl_elem_type_t) 2) /* integer type */
 728#define SNDRV_CTL_ELEM_TYPE_ENUMERATED  ((__force snd_ctl_elem_type_t) 3) /* enumerated type */
 729#define SNDRV_CTL_ELEM_TYPE_BYTES       ((__force snd_ctl_elem_type_t) 4) /* byte array */
 730#define SNDRV_CTL_ELEM_TYPE_IEC958      ((__force snd_ctl_elem_type_t) 5) /* IEC958 (S/PDIF) setup */
 731#define SNDRV_CTL_ELEM_TYPE_INTEGER64   ((__force snd_ctl_elem_type_t) 6) /* 64-bit integer type */
 732#define SNDRV_CTL_ELEM_TYPE_LAST        SNDRV_CTL_ELEM_TYPE_INTEGER64
 733
 734typedef int __bitwise snd_ctl_elem_iface_t;
 735#define SNDRV_CTL_ELEM_IFACE_CARD       ((__force snd_ctl_elem_iface_t) 0) /* global control */
 736#define SNDRV_CTL_ELEM_IFACE_HWDEP      ((__force snd_ctl_elem_iface_t) 1) /* hardware dependent device */
 737#define SNDRV_CTL_ELEM_IFACE_MIXER      ((__force snd_ctl_elem_iface_t) 2) /* virtual mixer device */
 738#define SNDRV_CTL_ELEM_IFACE_PCM        ((__force snd_ctl_elem_iface_t) 3) /* PCM device */
 739#define SNDRV_CTL_ELEM_IFACE_RAWMIDI    ((__force snd_ctl_elem_iface_t) 4) /* RawMidi device */
 740#define SNDRV_CTL_ELEM_IFACE_TIMER      ((__force snd_ctl_elem_iface_t) 5) /* timer device */
 741#define SNDRV_CTL_ELEM_IFACE_SEQUENCER  ((__force snd_ctl_elem_iface_t) 6) /* sequencer client */
 742#define SNDRV_CTL_ELEM_IFACE_LAST       SNDRV_CTL_ELEM_IFACE_SEQUENCER
 743
 744#define SNDRV_CTL_ELEM_ACCESS_READ              (1<<0)
 745#define SNDRV_CTL_ELEM_ACCESS_WRITE             (1<<1)
 746#define SNDRV_CTL_ELEM_ACCESS_READWRITE         (SNDRV_CTL_ELEM_ACCESS_READ|SNDRV_CTL_ELEM_ACCESS_WRITE)
 747#define SNDRV_CTL_ELEM_ACCESS_VOLATILE          (1<<2)  /* control value may be changed without a notification */
 748#define SNDRV_CTL_ELEM_ACCESS_TIMESTAMP         (1<<3)  /* when was control changed */
 749#define SNDRV_CTL_ELEM_ACCESS_TLV_READ          (1<<4)  /* TLV read is possible */
 750#define SNDRV_CTL_ELEM_ACCESS_TLV_WRITE         (1<<5)  /* TLV write is possible */
 751#define SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE     (SNDRV_CTL_ELEM_ACCESS_TLV_READ|SNDRV_CTL_ELEM_ACCESS_TLV_WRITE)
 752#define SNDRV_CTL_ELEM_ACCESS_TLV_COMMAND       (1<<6)  /* TLV command is possible */
 753#define SNDRV_CTL_ELEM_ACCESS_INACTIVE          (1<<8)  /* control does actually nothing, but may be updated */
 754#define SNDRV_CTL_ELEM_ACCESS_LOCK              (1<<9)  /* write lock */
 755#define SNDRV_CTL_ELEM_ACCESS_OWNER             (1<<10) /* write lock owner */
 756#define SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK      (1<<28) /* kernel use a TLV callback */ 
 757#define SNDRV_CTL_ELEM_ACCESS_USER              (1<<29) /* user space element */
 758/* bits 30 and 31 are obsoleted (for indirect access) */
 759
 760/* for further details see the ACPI and PCI power management specification */
 761#define SNDRV_CTL_POWER_D0              0x0000  /* full On */
 762#define SNDRV_CTL_POWER_D1              0x0100  /* partial On */
 763#define SNDRV_CTL_POWER_D2              0x0200  /* partial On */
 764#define SNDRV_CTL_POWER_D3              0x0300  /* Off */
 765#define SNDRV_CTL_POWER_D3hot           (SNDRV_CTL_POWER_D3|0x0000)     /* Off, with power */
 766#define SNDRV_CTL_POWER_D3cold          (SNDRV_CTL_POWER_D3|0x0001)     /* Off, without power */
 767
 768struct snd_ctl_elem_id {
 769        unsigned int numid;             /* numeric identifier, zero = invalid */
 770        snd_ctl_elem_iface_t iface;     /* interface identifier */
 771        unsigned int device;            /* device/client number */
 772        unsigned int subdevice;         /* subdevice (substream) number */
 773        unsigned char name[44];         /* ASCII name of item */
 774        unsigned int index;             /* index of item */
 775};
 776
 777struct snd_ctl_elem_list {
 778        unsigned int offset;            /* W: first element ID to get */
 779        unsigned int space;             /* W: count of element IDs to get */
 780        unsigned int used;              /* R: count of element IDs set */
 781        unsigned int count;             /* R: count of all elements */
 782        struct snd_ctl_elem_id __user *pids; /* R: IDs */
 783        unsigned char reserved[50];
 784};
 785
 786struct snd_ctl_elem_info {
 787        struct snd_ctl_elem_id id;      /* W: element ID */
 788        snd_ctl_elem_type_t type;       /* R: value type - SNDRV_CTL_ELEM_TYPE_* */
 789        unsigned int access;            /* R: value access (bitmask) - SNDRV_CTL_ELEM_ACCESS_* */
 790        unsigned int count;             /* count of values */
 791        pid_t owner;                    /* owner's PID of this control */
 792        union {
 793                struct {
 794                        long min;               /* R: minimum value */
 795                        long max;               /* R: maximum value */
 796                        long step;              /* R: step (0 variable) */
 797                } integer;
 798                struct {
 799                        long long min;          /* R: minimum value */
 800                        long long max;          /* R: maximum value */
 801                        long long step;         /* R: step (0 variable) */
 802                } integer64;
 803                struct {
 804                        unsigned int items;     /* R: number of items */
 805                        unsigned int item;      /* W: item number */
 806                        char name[64];          /* R: value name */
 807                } enumerated;
 808                unsigned char reserved[128];
 809        } value;
 810        union {
 811                unsigned short d[4];            /* dimensions */
 812                unsigned short *d_ptr;          /* indirect - obsoleted */
 813        } dimen;
 814        unsigned char reserved[64-4*sizeof(unsigned short)];
 815};
 816
 817struct snd_ctl_elem_value {
 818        struct snd_ctl_elem_id id;      /* W: element ID */
 819        unsigned int indirect: 1;       /* W: indirect access - obsoleted */
 820        union {
 821                union {
 822                        long value[128];
 823                        long *value_ptr;        /* obsoleted */
 824                } integer;
 825                union {
 826                        long long value[64];
 827                        long long *value_ptr;   /* obsoleted */
 828                } integer64;
 829                union {
 830                        unsigned int item[128];
 831                        unsigned int *item_ptr; /* obsoleted */
 832                } enumerated;
 833                union {
 834                        unsigned char data[512];
 835                        unsigned char *data_ptr;        /* obsoleted */
 836                } bytes;
 837                struct snd_aes_iec958 iec958;
 838        } value;                /* RO */
 839        struct timespec tstamp;
 840        unsigned char reserved[128-sizeof(struct timespec)];
 841};
 842
 843struct snd_ctl_tlv {
 844        unsigned int numid;     /* control element numeric identification */
 845        unsigned int length;    /* in bytes aligned to 4 */
 846        unsigned int tlv[0];    /* first TLV */
 847};
 848
 849enum {
 850        SNDRV_CTL_IOCTL_PVERSION = _IOR('U', 0x00, int),
 851        SNDRV_CTL_IOCTL_CARD_INFO = _IOR('U', 0x01, struct snd_ctl_card_info),
 852        SNDRV_CTL_IOCTL_ELEM_LIST = _IOWR('U', 0x10, struct snd_ctl_elem_list),
 853        SNDRV_CTL_IOCTL_ELEM_INFO = _IOWR('U', 0x11, struct snd_ctl_elem_info),
 854        SNDRV_CTL_IOCTL_ELEM_READ = _IOWR('U', 0x12, struct snd_ctl_elem_value),
 855        SNDRV_CTL_IOCTL_ELEM_WRITE = _IOWR('U', 0x13, struct snd_ctl_elem_value),
 856        SNDRV_CTL_IOCTL_ELEM_LOCK = _IOW('U', 0x14, struct snd_ctl_elem_id),
 857        SNDRV_CTL_IOCTL_ELEM_UNLOCK = _IOW('U', 0x15, struct snd_ctl_elem_id),
 858        SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS = _IOWR('U', 0x16, int),
 859        SNDRV_CTL_IOCTL_ELEM_ADD = _IOWR('U', 0x17, struct snd_ctl_elem_info),
 860        SNDRV_CTL_IOCTL_ELEM_REPLACE = _IOWR('U', 0x18, struct snd_ctl_elem_info),
 861        SNDRV_CTL_IOCTL_ELEM_REMOVE = _IOWR('U', 0x19, struct snd_ctl_elem_id),
 862        SNDRV_CTL_IOCTL_TLV_READ = _IOWR('U', 0x1a, struct snd_ctl_tlv),
 863        SNDRV_CTL_IOCTL_TLV_WRITE = _IOWR('U', 0x1b, struct snd_ctl_tlv),
 864        SNDRV_CTL_IOCTL_TLV_COMMAND = _IOWR('U', 0x1c, struct snd_ctl_tlv),
 865        SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE = _IOWR('U', 0x20, int),
 866        SNDRV_CTL_IOCTL_HWDEP_INFO = _IOR('U', 0x21, struct snd_hwdep_info),
 867        SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE = _IOR('U', 0x30, int),
 868        SNDRV_CTL_IOCTL_PCM_INFO = _IOWR('U', 0x31, struct snd_pcm_info),
 869        SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE = _IOW('U', 0x32, int),
 870        SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE = _IOWR('U', 0x40, int),
 871        SNDRV_CTL_IOCTL_RAWMIDI_INFO = _IOWR('U', 0x41, struct snd_rawmidi_info),
 872        SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE = _IOW('U', 0x42, int),
 873        SNDRV_CTL_IOCTL_POWER = _IOWR('U', 0xd0, int),
 874        SNDRV_CTL_IOCTL_POWER_STATE = _IOR('U', 0xd1, int),
 875};
 876
 877/*
 878 *  Read interface.
 879 */
 880
 881enum sndrv_ctl_event_type {
 882        SNDRV_CTL_EVENT_ELEM = 0,
 883        SNDRV_CTL_EVENT_LAST = SNDRV_CTL_EVENT_ELEM,
 884};
 885
 886#define SNDRV_CTL_EVENT_MASK_VALUE      (1<<0)  /* element value was changed */
 887#define SNDRV_CTL_EVENT_MASK_INFO       (1<<1)  /* element info was changed */
 888#define SNDRV_CTL_EVENT_MASK_ADD        (1<<2)  /* element was added */
 889#define SNDRV_CTL_EVENT_MASK_TLV        (1<<3)  /* element TLV tree was changed */
 890#define SNDRV_CTL_EVENT_MASK_REMOVE     (~0U)   /* element was removed */
 891
 892struct snd_ctl_event {
 893        int type;       /* event type - SNDRV_CTL_EVENT_* */
 894        union {
 895                struct {
 896                        unsigned int mask;
 897                        struct snd_ctl_elem_id id;
 898                } elem;
 899                unsigned char data8[60];
 900        } data;
 901};
 902
 903/*
 904 *  Control names
 905 */
 906
 907#define SNDRV_CTL_NAME_NONE                             ""
 908#define SNDRV_CTL_NAME_PLAYBACK                         "Playback "
 909#define SNDRV_CTL_NAME_CAPTURE                          "Capture "
 910
 911#define SNDRV_CTL_NAME_IEC958_NONE                      ""
 912#define SNDRV_CTL_NAME_IEC958_SWITCH                    "Switch"
 913#define SNDRV_CTL_NAME_IEC958_VOLUME                    "Volume"
 914#define SNDRV_CTL_NAME_IEC958_DEFAULT                   "Default"
 915#define SNDRV_CTL_NAME_IEC958_MASK                      "Mask"
 916#define SNDRV_CTL_NAME_IEC958_CON_MASK                  "Con Mask"
 917#define SNDRV_CTL_NAME_IEC958_PRO_MASK                  "Pro Mask"
 918#define SNDRV_CTL_NAME_IEC958_PCM_STREAM                "PCM Stream"
 919#define SNDRV_CTL_NAME_IEC958(expl,direction,what)      "IEC958 " expl SNDRV_CTL_NAME_##direction SNDRV_CTL_NAME_IEC958_##what
 920
 921/*
 922 *
 923 */
 924
 925struct snd_xferv {
 926        const struct iovec *vector;
 927        unsigned long count;
 928};
 929
 930enum {
 931        SNDRV_IOCTL_READV = _IOW('K', 0x00, struct snd_xferv),
 932        SNDRV_IOCTL_WRITEV = _IOW('K', 0x01, struct snd_xferv),
 933};
 934
 935#endif /* __SOUND_ASOUND_H */
 936