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
  97        /* Don't forget to change the following: */
  98        SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_SB_RC
  99};
 100
 101struct snd_hwdep_info {
 102        unsigned int device;            /* WR: device number */
 103        int card;                       /* R: card number */
 104        unsigned char id[64];           /* ID (user selectable) */
 105        unsigned char name[80];         /* hwdep name */
 106        int iface;                      /* hwdep interface */
 107        unsigned char reserved[64];     /* reserved for future */
 108};
 109
 110/* generic DSP loader */
 111struct snd_hwdep_dsp_status {
 112        unsigned int version;           /* R: driver-specific version */
 113        unsigned char id[32];           /* R: driver-specific ID string */
 114        unsigned int num_dsps;          /* R: number of DSP images to transfer */
 115        unsigned int dsp_loaded;        /* R: bit flags indicating the loaded DSPs */
 116        unsigned int chip_ready;        /* R: 1 = initialization finished */
 117        unsigned char reserved[16];     /* reserved for future use */
 118};
 119
 120struct snd_hwdep_dsp_image {
 121        unsigned int index;             /* W: DSP index */
 122        unsigned char name[64];         /* W: ID (e.g. file name) */
 123        unsigned char __user *image;    /* W: binary image */
 124        size_t length;                  /* W: size of image in bytes */
 125        unsigned long driver_data;      /* W: driver-specific data */
 126};
 127
 128enum {
 129        SNDRV_HWDEP_IOCTL_PVERSION = _IOR ('H', 0x00, int),
 130        SNDRV_HWDEP_IOCTL_INFO = _IOR ('H', 0x01, struct snd_hwdep_info),
 131        SNDRV_HWDEP_IOCTL_DSP_STATUS = _IOR('H', 0x02, struct snd_hwdep_dsp_status),
 132        SNDRV_HWDEP_IOCTL_DSP_LOAD   = _IOW('H', 0x03, struct snd_hwdep_dsp_image)
 133};
 134
 135/*****************************************************************************
 136 *                                                                           *
 137 *             Digital Audio (PCM) interface - /dev/snd/pcm??                *
 138 *                                                                           *
 139 *****************************************************************************/
 140
 141#define SNDRV_PCM_VERSION               SNDRV_PROTOCOL_VERSION(2, 0, 8)
 142
 143typedef unsigned long snd_pcm_uframes_t;
 144typedef signed long snd_pcm_sframes_t;
 145
 146enum {
 147        SNDRV_PCM_CLASS_GENERIC = 0,    /* standard mono or stereo device */
 148        SNDRV_PCM_CLASS_MULTI,          /* multichannel device */
 149        SNDRV_PCM_CLASS_MODEM,          /* software modem class */
 150        SNDRV_PCM_CLASS_DIGITIZER,      /* digitizer class */
 151        /* Don't forget to change the following: */
 152        SNDRV_PCM_CLASS_LAST = SNDRV_PCM_CLASS_DIGITIZER,
 153};
 154
 155enum {
 156        SNDRV_PCM_SUBCLASS_GENERIC_MIX = 0, /* mono or stereo subdevices are mixed together */
 157        SNDRV_PCM_SUBCLASS_MULTI_MIX,   /* multichannel subdevices are mixed together */
 158        /* Don't forget to change the following: */
 159        SNDRV_PCM_SUBCLASS_LAST = SNDRV_PCM_SUBCLASS_MULTI_MIX,
 160};
 161
 162enum {
 163        SNDRV_PCM_STREAM_PLAYBACK = 0,
 164        SNDRV_PCM_STREAM_CAPTURE,
 165        SNDRV_PCM_STREAM_LAST = SNDRV_PCM_STREAM_CAPTURE,
 166};
 167
 168typedef int __bitwise snd_pcm_access_t;
 169#define SNDRV_PCM_ACCESS_MMAP_INTERLEAVED       ((__force snd_pcm_access_t) 0) /* interleaved mmap */
 170#define SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED    ((__force snd_pcm_access_t) 1) /* noninterleaved mmap */
 171#define SNDRV_PCM_ACCESS_MMAP_COMPLEX           ((__force snd_pcm_access_t) 2) /* complex mmap */
 172#define SNDRV_PCM_ACCESS_RW_INTERLEAVED         ((__force snd_pcm_access_t) 3) /* readi/writei */
 173#define SNDRV_PCM_ACCESS_RW_NONINTERLEAVED      ((__force snd_pcm_access_t) 4) /* readn/writen */
 174#define SNDRV_PCM_ACCESS_LAST           SNDRV_PCM_ACCESS_RW_NONINTERLEAVED
 175
 176typedef int __bitwise snd_pcm_format_t;
 177#define SNDRV_PCM_FORMAT_S8     ((__force snd_pcm_format_t) 0)
 178#define SNDRV_PCM_FORMAT_U8     ((__force snd_pcm_format_t) 1)
 179#define SNDRV_PCM_FORMAT_S16_LE ((__force snd_pcm_format_t) 2)
 180#define SNDRV_PCM_FORMAT_S16_BE ((__force snd_pcm_format_t) 3)
 181#define SNDRV_PCM_FORMAT_U16_LE ((__force snd_pcm_format_t) 4)
 182#define SNDRV_PCM_FORMAT_U16_BE ((__force snd_pcm_format_t) 5)
 183#define SNDRV_PCM_FORMAT_S24_LE ((__force snd_pcm_format_t) 6) /* low three bytes */
 184#define SNDRV_PCM_FORMAT_S24_BE ((__force snd_pcm_format_t) 7) /* low three bytes */
 185#define SNDRV_PCM_FORMAT_U24_LE ((__force snd_pcm_format_t) 8) /* low three bytes */
 186#define SNDRV_PCM_FORMAT_U24_BE ((__force snd_pcm_format_t) 9) /* low three bytes */
 187#define SNDRV_PCM_FORMAT_S32_LE ((__force snd_pcm_format_t) 10)
 188#define SNDRV_PCM_FORMAT_S32_BE ((__force snd_pcm_format_t) 11)
 189#define SNDRV_PCM_FORMAT_U32_LE ((__force snd_pcm_format_t) 12)
 190#define SNDRV_PCM_FORMAT_U32_BE ((__force snd_pcm_format_t) 13)
 191#define SNDRV_PCM_FORMAT_FLOAT_LE       ((__force snd_pcm_format_t) 14) /* 4-byte float, IEEE-754 32-bit, range -1.0 to 1.0 */
 192#define SNDRV_PCM_FORMAT_FLOAT_BE       ((__force snd_pcm_format_t) 15) /* 4-byte float, IEEE-754 32-bit, range -1.0 to 1.0 */
 193#define SNDRV_PCM_FORMAT_FLOAT64_LE     ((__force snd_pcm_format_t) 16) /* 8-byte float, IEEE-754 64-bit, range -1.0 to 1.0 */
 194#define SNDRV_PCM_FORMAT_FLOAT64_BE     ((__force snd_pcm_format_t) 17) /* 8-byte float, IEEE-754 64-bit, range -1.0 to 1.0 */
 195#define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE ((__force snd_pcm_format_t) 18) /* IEC-958 subframe, Little Endian */
 196#define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE ((__force snd_pcm_format_t) 19) /* IEC-958 subframe, Big Endian */
 197#define SNDRV_PCM_FORMAT_MU_LAW         ((__force snd_pcm_format_t) 20)
 198#define SNDRV_PCM_FORMAT_A_LAW          ((__force snd_pcm_format_t) 21)
 199#define SNDRV_PCM_FORMAT_IMA_ADPCM      ((__force snd_pcm_format_t) 22)
 200#define SNDRV_PCM_FORMAT_MPEG           ((__force snd_pcm_format_t) 23)
 201#define SNDRV_PCM_FORMAT_GSM            ((__force snd_pcm_format_t) 24)
 202#define SNDRV_PCM_FORMAT_SPECIAL        ((__force snd_pcm_format_t) 31)
 203#define SNDRV_PCM_FORMAT_S24_3LE        ((__force snd_pcm_format_t) 32) /* in three bytes */
 204#define SNDRV_PCM_FORMAT_S24_3BE        ((__force snd_pcm_format_t) 33) /* in three bytes */
 205#define SNDRV_PCM_FORMAT_U24_3LE        ((__force snd_pcm_format_t) 34) /* in three bytes */
 206#define SNDRV_PCM_FORMAT_U24_3BE        ((__force snd_pcm_format_t) 35) /* in three bytes */
 207#define SNDRV_PCM_FORMAT_S20_3LE        ((__force snd_pcm_format_t) 36) /* in three bytes */
 208#define SNDRV_PCM_FORMAT_S20_3BE        ((__force snd_pcm_format_t) 37) /* in three bytes */
 209#define SNDRV_PCM_FORMAT_U20_3LE        ((__force snd_pcm_format_t) 38) /* in three bytes */
 210#define SNDRV_PCM_FORMAT_U20_3BE        ((__force snd_pcm_format_t) 39) /* in three bytes */
 211#define SNDRV_PCM_FORMAT_S18_3LE        ((__force snd_pcm_format_t) 40) /* in three bytes */
 212#define SNDRV_PCM_FORMAT_S18_3BE        ((__force snd_pcm_format_t) 41) /* in three bytes */
 213#define SNDRV_PCM_FORMAT_U18_3LE        ((__force snd_pcm_format_t) 42) /* in three bytes */
 214#define SNDRV_PCM_FORMAT_U18_3BE        ((__force snd_pcm_format_t) 43) /* in three bytes */
 215#define SNDRV_PCM_FORMAT_LAST           SNDRV_PCM_FORMAT_U18_3BE
 216
 217#ifdef SNDRV_LITTLE_ENDIAN
 218#define SNDRV_PCM_FORMAT_S16            SNDRV_PCM_FORMAT_S16_LE
 219#define SNDRV_PCM_FORMAT_U16            SNDRV_PCM_FORMAT_U16_LE
 220#define SNDRV_PCM_FORMAT_S24            SNDRV_PCM_FORMAT_S24_LE
 221#define SNDRV_PCM_FORMAT_U24            SNDRV_PCM_FORMAT_U24_LE
 222#define SNDRV_PCM_FORMAT_S32            SNDRV_PCM_FORMAT_S32_LE
 223#define SNDRV_PCM_FORMAT_U32            SNDRV_PCM_FORMAT_U32_LE
 224#define SNDRV_PCM_FORMAT_FLOAT          SNDRV_PCM_FORMAT_FLOAT_LE
 225#define SNDRV_PCM_FORMAT_FLOAT64        SNDRV_PCM_FORMAT_FLOAT64_LE
 226#define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE
 227#endif
 228#ifdef SNDRV_BIG_ENDIAN
 229#define SNDRV_PCM_FORMAT_S16            SNDRV_PCM_FORMAT_S16_BE
 230#define SNDRV_PCM_FORMAT_U16            SNDRV_PCM_FORMAT_U16_BE
 231#define SNDRV_PCM_FORMAT_S24            SNDRV_PCM_FORMAT_S24_BE
 232#define SNDRV_PCM_FORMAT_U24            SNDRV_PCM_FORMAT_U24_BE
 233#define SNDRV_PCM_FORMAT_S32            SNDRV_PCM_FORMAT_S32_BE
 234#define SNDRV_PCM_FORMAT_U32            SNDRV_PCM_FORMAT_U32_BE
 235#define SNDRV_PCM_FORMAT_FLOAT          SNDRV_PCM_FORMAT_FLOAT_BE
 236#define SNDRV_PCM_FORMAT_FLOAT64        SNDRV_PCM_FORMAT_FLOAT64_BE
 237#define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE
 238#endif
 239
 240typedef int __bitwise snd_pcm_subformat_t;
 241#define SNDRV_PCM_SUBFORMAT_STD         ((__force snd_pcm_subformat_t) 0)
 242#define SNDRV_PCM_SUBFORMAT_LAST        SNDRV_PCM_SUBFORMAT_STD
 243
 244#define SNDRV_PCM_INFO_MMAP             0x00000001      /* hardware supports mmap */
 245#define SNDRV_PCM_INFO_MMAP_VALID       0x00000002      /* period data are valid during transfer */
 246#define SNDRV_PCM_INFO_DOUBLE           0x00000004      /* Double buffering needed for PCM start/stop */
 247#define SNDRV_PCM_INFO_BATCH            0x00000010      /* double buffering */
 248#define SNDRV_PCM_INFO_INTERLEAVED      0x00000100      /* channels are interleaved */
 249#define SNDRV_PCM_INFO_NONINTERLEAVED   0x00000200      /* channels are not interleaved */
 250#define SNDRV_PCM_INFO_COMPLEX          0x00000400      /* complex frame organization (mmap only) */
 251#define SNDRV_PCM_INFO_BLOCK_TRANSFER   0x00010000      /* hardware transfer block of samples */
 252#define SNDRV_PCM_INFO_OVERRANGE        0x00020000      /* hardware supports ADC (capture) overrange detection */
 253#define SNDRV_PCM_INFO_RESUME           0x00040000      /* hardware supports stream resume after suspend */
 254#define SNDRV_PCM_INFO_PAUSE            0x00080000      /* pause ioctl is supported */
 255#define SNDRV_PCM_INFO_HALF_DUPLEX      0x00100000      /* only half duplex */
 256#define SNDRV_PCM_INFO_JOINT_DUPLEX     0x00200000      /* playback and capture stream are somewhat correlated */
 257#define SNDRV_PCM_INFO_SYNC_START       0x00400000      /* pcm support some kind of sync go */
 258
 259typedef int __bitwise snd_pcm_state_t;
 260#define SNDRV_PCM_STATE_OPEN            ((__force snd_pcm_state_t) 0) /* stream is open */
 261#define SNDRV_PCM_STATE_SETUP           ((__force snd_pcm_state_t) 1) /* stream has a setup */
 262#define SNDRV_PCM_STATE_PREPARED        ((__force snd_pcm_state_t) 2) /* stream is ready to start */
 263#define SNDRV_PCM_STATE_RUNNING         ((__force snd_pcm_state_t) 3) /* stream is running */
 264#define SNDRV_PCM_STATE_XRUN            ((__force snd_pcm_state_t) 4) /* stream reached an xrun */
 265#define SNDRV_PCM_STATE_DRAINING        ((__force snd_pcm_state_t) 5) /* stream is draining */
 266#define SNDRV_PCM_STATE_PAUSED          ((__force snd_pcm_state_t) 6) /* stream is paused */
 267#define SNDRV_PCM_STATE_SUSPENDED       ((__force snd_pcm_state_t) 7) /* hardware is suspended */
 268#define SNDRV_PCM_STATE_DISCONNECTED    ((__force snd_pcm_state_t) 8) /* hardware is disconnected */
 269#define SNDRV_PCM_STATE_LAST            SNDRV_PCM_STATE_DISCONNECTED
 270
 271enum {
 272        SNDRV_PCM_MMAP_OFFSET_DATA = 0x00000000,
 273        SNDRV_PCM_MMAP_OFFSET_STATUS = 0x80000000,
 274        SNDRV_PCM_MMAP_OFFSET_CONTROL = 0x81000000,
 275};
 276
 277union snd_pcm_sync_id {
 278        unsigned char id[16];
 279        unsigned short id16[8];
 280        unsigned int id32[4];
 281};
 282
 283struct snd_pcm_info {
 284        unsigned int device;            /* RO/WR (control): device number */
 285        unsigned int subdevice;         /* RO/WR (control): subdevice number */
 286        int stream;                     /* RO/WR (control): stream direction */
 287        int card;                       /* R: card number */
 288        unsigned char id[64];           /* ID (user selectable) */
 289        unsigned char name[80];         /* name of this device */
 290        unsigned char subname[32];      /* subdevice name */
 291        int dev_class;                  /* SNDRV_PCM_CLASS_* */
 292        int dev_subclass;               /* SNDRV_PCM_SUBCLASS_* */
 293        unsigned int subdevices_count;
 294        unsigned int subdevices_avail;
 295        union snd_pcm_sync_id sync;     /* hardware synchronization ID */
 296        unsigned char reserved[64];     /* reserved for future... */
 297};
 298
 299typedef int __bitwise snd_pcm_hw_param_t;
 300#define SNDRV_PCM_HW_PARAM_ACCESS       ((__force snd_pcm_hw_param_t) 0) /* Access type */
 301#define SNDRV_PCM_HW_PARAM_FORMAT       ((__force snd_pcm_hw_param_t) 1) /* Format */
 302#define SNDRV_PCM_HW_PARAM_SUBFORMAT    ((__force snd_pcm_hw_param_t) 2) /* Subformat */
 303#define SNDRV_PCM_HW_PARAM_FIRST_MASK   SNDRV_PCM_HW_PARAM_ACCESS
 304#define SNDRV_PCM_HW_PARAM_LAST_MASK    SNDRV_PCM_HW_PARAM_SUBFORMAT
 305
 306#define SNDRV_PCM_HW_PARAM_SAMPLE_BITS  ((__force snd_pcm_hw_param_t) 8) /* Bits per sample */
 307#define SNDRV_PCM_HW_PARAM_FRAME_BITS   ((__force snd_pcm_hw_param_t) 9) /* Bits per frame */
 308#define SNDRV_PCM_HW_PARAM_CHANNELS     ((__force snd_pcm_hw_param_t) 10) /* Channels */
 309#define SNDRV_PCM_HW_PARAM_RATE         ((__force snd_pcm_hw_param_t) 11) /* Approx rate */
 310#define SNDRV_PCM_HW_PARAM_PERIOD_TIME  ((__force snd_pcm_hw_param_t) 12) /* Approx distance between interrupts in us */
 311#define SNDRV_PCM_HW_PARAM_PERIOD_SIZE  ((__force snd_pcm_hw_param_t) 13) /* Approx frames between interrupts */
 312#define SNDRV_PCM_HW_PARAM_PERIOD_BYTES ((__force snd_pcm_hw_param_t) 14) /* Approx bytes between interrupts */
 313#define SNDRV_PCM_HW_PARAM_PERIODS      ((__force snd_pcm_hw_param_t) 15) /* Approx interrupts per buffer */
 314#define SNDRV_PCM_HW_PARAM_BUFFER_TIME  ((__force snd_pcm_hw_param_t) 16) /* Approx duration of buffer in us */
 315#define SNDRV_PCM_HW_PARAM_BUFFER_SIZE  ((__force snd_pcm_hw_param_t) 17) /* Size of buffer in frames */
 316#define SNDRV_PCM_HW_PARAM_BUFFER_BYTES ((__force snd_pcm_hw_param_t) 18) /* Size of buffer in bytes */
 317#define SNDRV_PCM_HW_PARAM_TICK_TIME    ((__force snd_pcm_hw_param_t) 19) /* Approx tick duration in us */
 318#define SNDRV_PCM_HW_PARAM_FIRST_INTERVAL       SNDRV_PCM_HW_PARAM_SAMPLE_BITS
 319#define SNDRV_PCM_HW_PARAM_LAST_INTERVAL        SNDRV_PCM_HW_PARAM_TICK_TIME
 320
 321#define SNDRV_PCM_HW_PARAMS_NORESAMPLE          (1<<0)  /* avoid rate resampling */
 322
 323struct snd_interval {
 324        unsigned int min, max;
 325        unsigned int openmin:1,
 326                     openmax:1,
 327                     integer:1,
 328                     empty:1;
 329};
 330
 331#define SNDRV_MASK_MAX  256
 332
 333struct snd_mask {
 334        u_int32_t bits[(SNDRV_MASK_MAX+31)/32];
 335};
 336
 337struct snd_pcm_hw_params {
 338        unsigned int flags;
 339        struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK - 
 340                               SNDRV_PCM_HW_PARAM_FIRST_MASK + 1];
 341        struct snd_mask mres[5];        /* reserved masks */
 342        struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL -
 343                                        SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];
 344        struct snd_interval ires[9];    /* reserved intervals */
 345        unsigned int rmask;             /* W: requested masks */
 346        unsigned int cmask;             /* R: changed masks */
 347        unsigned int info;              /* R: Info flags for returned setup */
 348        unsigned int msbits;            /* R: used most significant bits */
 349        unsigned int rate_num;          /* R: rate numerator */
 350        unsigned int rate_den;          /* R: rate denominator */
 351        snd_pcm_uframes_t fifo_size;    /* R: chip FIFO size in frames */
 352        unsigned char reserved[64];     /* reserved for future */
 353};
 354
 355enum {
 356        SNDRV_PCM_TSTAMP_NONE = 0,
 357        SNDRV_PCM_TSTAMP_MMAP,
 358        SNDRV_PCM_TSTAMP_LAST = SNDRV_PCM_TSTAMP_MMAP,
 359};
 360
 361struct snd_pcm_sw_params {
 362        int tstamp_mode;                        /* timestamp mode */
 363        unsigned int period_step;
 364        unsigned int sleep_min;                 /* min ticks to sleep */
 365        snd_pcm_uframes_t avail_min;            /* min avail frames for wakeup */
 366        snd_pcm_uframes_t xfer_align;           /* xfer size need to be a multiple */
 367        snd_pcm_uframes_t start_threshold;      /* min hw_avail frames for automatic start */
 368        snd_pcm_uframes_t stop_threshold;       /* min avail frames for automatic stop */
 369        snd_pcm_uframes_t silence_threshold;    /* min distance from noise for silence filling */
 370        snd_pcm_uframes_t silence_size;         /* silence block size */
 371        snd_pcm_uframes_t boundary;             /* pointers wrap point */
 372        unsigned char reserved[64];             /* reserved for future */
 373};
 374
 375struct snd_pcm_channel_info {
 376        unsigned int channel;
 377        off_t offset;                   /* mmap offset */
 378        unsigned int first;             /* offset to first sample in bits */
 379        unsigned int step;              /* samples distance in bits */
 380};
 381
 382struct snd_pcm_status {
 383        snd_pcm_state_t state;          /* stream state */
 384        struct timespec trigger_tstamp; /* time when stream was started/stopped/paused */
 385        struct timespec tstamp;         /* reference timestamp */
 386        snd_pcm_uframes_t appl_ptr;     /* appl ptr */
 387        snd_pcm_uframes_t hw_ptr;       /* hw ptr */
 388        snd_pcm_sframes_t delay;        /* current delay in frames */
 389        snd_pcm_uframes_t avail;        /* number of frames available */
 390        snd_pcm_uframes_t avail_max;    /* max frames available on hw since last status */
 391        snd_pcm_uframes_t overrange;    /* count of ADC (capture) overrange detections from last status */
 392        snd_pcm_state_t suspended_state; /* suspended stream state */
 393        unsigned char reserved[60];     /* must be filled with zero */
 394};
 395
 396struct snd_pcm_mmap_status {
 397        snd_pcm_state_t state;          /* RO: state - SNDRV_PCM_STATE_XXXX */
 398        int pad1;                       /* Needed for 64 bit alignment */
 399        snd_pcm_uframes_t hw_ptr;       /* RO: hw ptr (0...boundary-1) */
 400        struct timespec tstamp;         /* Timestamp */
 401        snd_pcm_state_t suspended_state; /* RO: suspended stream state */
 402};
 403
 404struct snd_pcm_mmap_control {
 405        snd_pcm_uframes_t appl_ptr;     /* RW: appl ptr (0...boundary-1) */
 406        snd_pcm_uframes_t avail_min;    /* RW: min available frames for wakeup */
 407};
 408
 409#define SNDRV_PCM_SYNC_PTR_HWSYNC       (1<<0)  /* execute hwsync */
 410#define SNDRV_PCM_SYNC_PTR_APPL         (1<<1)  /* get appl_ptr from driver (r/w op) */
 411#define SNDRV_PCM_SYNC_PTR_AVAIL_MIN    (1<<2)  /* get avail_min from driver */
 412
 413struct snd_pcm_sync_ptr {
 414        unsigned int flags;
 415        union {
 416                struct snd_pcm_mmap_status status;
 417                unsigned char reserved[64];
 418        } s;
 419        union {
 420                struct snd_pcm_mmap_control control;
 421                unsigned char reserved[64];
 422        } c;
 423};
 424
 425struct snd_xferi {
 426        snd_pcm_sframes_t result;
 427        void __user *buf;
 428        snd_pcm_uframes_t frames;
 429};
 430
 431struct snd_xfern {
 432        snd_pcm_sframes_t result;
 433        void __user * __user *bufs;
 434        snd_pcm_uframes_t frames;
 435};
 436
 437enum {
 438        SNDRV_PCM_IOCTL_PVERSION = _IOR('A', 0x00, int),
 439        SNDRV_PCM_IOCTL_INFO = _IOR('A', 0x01, struct snd_pcm_info),
 440        SNDRV_PCM_IOCTL_TSTAMP = _IOW('A', 0x02, int),
 441        SNDRV_PCM_IOCTL_HW_REFINE = _IOWR('A', 0x10, struct snd_pcm_hw_params),
 442        SNDRV_PCM_IOCTL_HW_PARAMS = _IOWR('A', 0x11, struct snd_pcm_hw_params),
 443        SNDRV_PCM_IOCTL_HW_FREE = _IO('A', 0x12),
 444        SNDRV_PCM_IOCTL_SW_PARAMS = _IOWR('A', 0x13, struct snd_pcm_sw_params),
 445        SNDRV_PCM_IOCTL_STATUS = _IOR('A', 0x20, struct snd_pcm_status),
 446        SNDRV_PCM_IOCTL_DELAY = _IOR('A', 0x21, snd_pcm_sframes_t),
 447        SNDRV_PCM_IOCTL_HWSYNC = _IO('A', 0x22),
 448        SNDRV_PCM_IOCTL_SYNC_PTR = _IOWR('A', 0x23, struct snd_pcm_sync_ptr),
 449        SNDRV_PCM_IOCTL_CHANNEL_INFO = _IOR('A', 0x32, struct snd_pcm_channel_info),
 450        SNDRV_PCM_IOCTL_PREPARE = _IO('A', 0x40),
 451        SNDRV_PCM_IOCTL_RESET = _IO('A', 0x41),
 452        SNDRV_PCM_IOCTL_START = _IO('A', 0x42),
 453        SNDRV_PCM_IOCTL_DROP = _IO('A', 0x43),
 454        SNDRV_PCM_IOCTL_DRAIN = _IO('A', 0x44),
 455        SNDRV_PCM_IOCTL_PAUSE = _IOW('A', 0x45, int),
 456        SNDRV_PCM_IOCTL_REWIND = _IOW('A', 0x46, snd_pcm_uframes_t),
 457        SNDRV_PCM_IOCTL_RESUME = _IO('A', 0x47),
 458        SNDRV_PCM_IOCTL_XRUN = _IO('A', 0x48),
 459        SNDRV_PCM_IOCTL_FORWARD = _IOW('A', 0x49, snd_pcm_uframes_t),
 460        SNDRV_PCM_IOCTL_WRITEI_FRAMES = _IOW('A', 0x50, struct snd_xferi),
 461        SNDRV_PCM_IOCTL_READI_FRAMES = _IOR('A', 0x51, struct snd_xferi),
 462        SNDRV_PCM_IOCTL_WRITEN_FRAMES = _IOW('A', 0x52, struct snd_xfern),
 463        SNDRV_PCM_IOCTL_READN_FRAMES = _IOR('A', 0x53, struct snd_xfern),
 464        SNDRV_PCM_IOCTL_LINK = _IOW('A', 0x60, int),
 465        SNDRV_PCM_IOCTL_UNLINK = _IO('A', 0x61),
 466};
 467
 468/* Trick to make alsa-lib/acinclude.m4 happy */
 469#define SNDRV_PCM_IOCTL_REWIND SNDRV_PCM_IOCTL_REWIND
 470
 471/*****************************************************************************
 472 *                                                                           *
 473 *                            MIDI v1.0 interface                            *
 474 *                                                                           *
 475 *****************************************************************************/
 476
 477/*
 478 *  Raw MIDI section - /dev/snd/midi??
 479 */
 480
 481#define SNDRV_RAWMIDI_VERSION           SNDRV_PROTOCOL_VERSION(2, 0, 0)
 482
 483enum {
 484        SNDRV_RAWMIDI_STREAM_OUTPUT = 0,
 485        SNDRV_RAWMIDI_STREAM_INPUT,
 486        SNDRV_RAWMIDI_STREAM_LAST = SNDRV_RAWMIDI_STREAM_INPUT,
 487};
 488
 489#define SNDRV_RAWMIDI_INFO_OUTPUT               0x00000001
 490#define SNDRV_RAWMIDI_INFO_INPUT                0x00000002
 491#define SNDRV_RAWMIDI_INFO_DUPLEX               0x00000004
 492
 493struct snd_rawmidi_info {
 494        unsigned int device;            /* RO/WR (control): device number */
 495        unsigned int subdevice;         /* RO/WR (control): subdevice number */
 496        int stream;                     /* WR: stream */
 497        int card;                       /* R: card number */
 498        unsigned int flags;             /* SNDRV_RAWMIDI_INFO_XXXX */
 499        unsigned char id[64];           /* ID (user selectable) */
 500        unsigned char name[80];         /* name of device */
 501        unsigned char subname[32];      /* name of active or selected subdevice */
 502        unsigned int subdevices_count;
 503        unsigned int subdevices_avail;
 504        unsigned char reserved[64];     /* reserved for future use */
 505};
 506
 507struct snd_rawmidi_params {
 508        int stream;
 509        size_t buffer_size;             /* queue size in bytes */
 510        size_t avail_min;               /* minimum avail bytes for wakeup */
 511        unsigned int no_active_sensing: 1; /* do not send active sensing byte in close() */
 512        unsigned char reserved[16];     /* reserved for future use */
 513};
 514
 515struct snd_rawmidi_status {
 516        int stream;
 517        struct timespec tstamp;         /* Timestamp */
 518        size_t avail;                   /* available bytes */
 519        size_t xruns;                   /* count of overruns since last status (in bytes) */
 520        unsigned char reserved[16];     /* reserved for future use */
 521};
 522
 523enum {
 524        SNDRV_RAWMIDI_IOCTL_PVERSION = _IOR('W', 0x00, int),
 525        SNDRV_RAWMIDI_IOCTL_INFO = _IOR('W', 0x01, struct snd_rawmidi_info),
 526        SNDRV_RAWMIDI_IOCTL_PARAMS = _IOWR('W', 0x10, struct snd_rawmidi_params),
 527        SNDRV_RAWMIDI_IOCTL_STATUS = _IOWR('W', 0x20, struct snd_rawmidi_status),
 528        SNDRV_RAWMIDI_IOCTL_DROP = _IOW('W', 0x30, int),
 529        SNDRV_RAWMIDI_IOCTL_DRAIN = _IOW('W', 0x31, int),
 530};
 531
 532/*
 533 *  Timer section - /dev/snd/timer
 534 */
 535
 536#define SNDRV_TIMER_VERSION             SNDRV_PROTOCOL_VERSION(2, 0, 5)
 537
 538enum {
 539        SNDRV_TIMER_CLASS_NONE = -1,
 540        SNDRV_TIMER_CLASS_SLAVE = 0,
 541        SNDRV_TIMER_CLASS_GLOBAL,
 542        SNDRV_TIMER_CLASS_CARD,
 543        SNDRV_TIMER_CLASS_PCM,
 544        SNDRV_TIMER_CLASS_LAST = SNDRV_TIMER_CLASS_PCM,
 545};
 546
 547/* slave timer classes */
 548enum {
 549        SNDRV_TIMER_SCLASS_NONE = 0,
 550        SNDRV_TIMER_SCLASS_APPLICATION,
 551        SNDRV_TIMER_SCLASS_SEQUENCER,           /* alias */
 552        SNDRV_TIMER_SCLASS_OSS_SEQUENCER,       /* alias */
 553        SNDRV_TIMER_SCLASS_LAST = SNDRV_TIMER_SCLASS_OSS_SEQUENCER,
 554};
 555
 556/* global timers (device member) */
 557#define SNDRV_TIMER_GLOBAL_SYSTEM       0
 558#define SNDRV_TIMER_GLOBAL_RTC          1
 559#define SNDRV_TIMER_GLOBAL_HPET         2
 560
 561/* info flags */
 562#define SNDRV_TIMER_FLG_SLAVE           (1<<0)  /* cannot be controlled */
 563
 564struct snd_timer_id {
 565        int dev_class;  
 566        int dev_sclass;
 567        int card;
 568        int device;
 569        int subdevice;
 570};
 571
 572struct snd_timer_ginfo {
 573        struct snd_timer_id tid;        /* requested timer ID */
 574        unsigned int flags;             /* timer flags - SNDRV_TIMER_FLG_* */
 575        int card;                       /* card number */
 576        unsigned char id[64];           /* timer identification */
 577        unsigned char name[80];         /* timer name */
 578        unsigned long reserved0;        /* reserved for future use */
 579        unsigned long resolution;       /* average period resolution in ns */
 580        unsigned long resolution_min;   /* minimal period resolution in ns */
 581        unsigned long resolution_max;   /* maximal period resolution in ns */
 582        unsigned int clients;           /* active timer clients */
 583        unsigned char reserved[32];
 584};
 585
 586struct snd_timer_gparams {
 587        struct snd_timer_id tid;        /* requested timer ID */
 588        unsigned long period_num;       /* requested precise period duration (in seconds) - numerator */
 589        unsigned long period_den;       /* requested precise period duration (in seconds) - denominator */
 590        unsigned char reserved[32];
 591};
 592
 593struct snd_timer_gstatus {
 594        struct snd_timer_id tid;        /* requested timer ID */
 595        unsigned long resolution;       /* current period resolution in ns */
 596        unsigned long resolution_num;   /* precise current period resolution (in seconds) - numerator */
 597        unsigned long resolution_den;   /* precise current period resolution (in seconds) - denominator */
 598        unsigned char reserved[32];
 599};
 600
 601struct snd_timer_select {
 602        struct snd_timer_id id; /* bind to timer ID */
 603        unsigned char reserved[32];     /* reserved */
 604};
 605
 606struct snd_timer_info {
 607        unsigned int flags;             /* timer flags - SNDRV_TIMER_FLG_* */
 608        int card;                       /* card number */
 609        unsigned char id[64];           /* timer identificator */
 610        unsigned char name[80];         /* timer name */
 611        unsigned long reserved0;        /* reserved for future use */
 612        unsigned long resolution;       /* average period resolution in ns */
 613        unsigned char reserved[64];     /* reserved */
 614};
 615
 616#define SNDRV_TIMER_PSFLG_AUTO          (1<<0)  /* auto start, otherwise one-shot */
 617#define SNDRV_TIMER_PSFLG_EXCLUSIVE     (1<<1)  /* exclusive use, precise start/stop/pause/continue */
 618#define SNDRV_TIMER_PSFLG_EARLY_EVENT   (1<<2)  /* write early event to the poll queue */
 619
 620struct snd_timer_params {
 621        unsigned int flags;             /* flags - SNDRV_MIXER_PSFLG_* */
 622        unsigned int ticks;             /* requested resolution in ticks */
 623        unsigned int queue_size;        /* total size of queue (32-1024) */
 624        unsigned int reserved0;         /* reserved, was: failure locations */
 625        unsigned int filter;            /* event filter (bitmask of SNDRV_TIMER_EVENT_*) */
 626        unsigned char reserved[60];     /* reserved */
 627};
 628
 629struct snd_timer_status {
 630        struct timespec tstamp;         /* Timestamp - last update */
 631        unsigned int resolution;        /* current period resolution in ns */
 632        unsigned int lost;              /* counter of master tick lost */
 633        unsigned int overrun;           /* count of read queue overruns */
 634        unsigned int queue;             /* used queue size */
 635        unsigned char reserved[64];     /* reserved */
 636};
 637
 638enum {
 639        SNDRV_TIMER_IOCTL_PVERSION = _IOR('T', 0x00, int),
 640        SNDRV_TIMER_IOCTL_NEXT_DEVICE = _IOWR('T', 0x01, struct snd_timer_id),
 641        SNDRV_TIMER_IOCTL_TREAD = _IOW('T', 0x02, int),
 642        SNDRV_TIMER_IOCTL_GINFO = _IOWR('T', 0x03, struct snd_timer_ginfo),
 643        SNDRV_TIMER_IOCTL_GPARAMS = _IOW('T', 0x04, struct snd_timer_gparams),
 644        SNDRV_TIMER_IOCTL_GSTATUS = _IOWR('T', 0x05, struct snd_timer_gstatus),
 645        SNDRV_TIMER_IOCTL_SELECT = _IOW('T', 0x10, struct snd_timer_select),
 646        SNDRV_TIMER_IOCTL_INFO = _IOR('T', 0x11, struct snd_timer_info),
 647        SNDRV_TIMER_IOCTL_PARAMS = _IOW('T', 0x12, struct snd_timer_params),
 648        SNDRV_TIMER_IOCTL_STATUS = _IOR('T', 0x14, struct snd_timer_status),
 649        /* The following four ioctls are changed since 1.0.9 due to confliction */
 650        SNDRV_TIMER_IOCTL_START = _IO('T', 0xa0),
 651        SNDRV_TIMER_IOCTL_STOP = _IO('T', 0xa1),
 652        SNDRV_TIMER_IOCTL_CONTINUE = _IO('T', 0xa2),
 653        SNDRV_TIMER_IOCTL_PAUSE = _IO('T', 0xa3),
 654};
 655
 656struct snd_timer_read {
 657        unsigned int resolution;
 658        unsigned int ticks;
 659};
 660
 661enum {
 662        SNDRV_TIMER_EVENT_RESOLUTION = 0,       /* val = resolution in ns */
 663        SNDRV_TIMER_EVENT_TICK,                 /* val = ticks */
 664        SNDRV_TIMER_EVENT_START,                /* val = resolution in ns */
 665        SNDRV_TIMER_EVENT_STOP,                 /* val = 0 */
 666        SNDRV_TIMER_EVENT_CONTINUE,             /* val = resolution in ns */
 667        SNDRV_TIMER_EVENT_PAUSE,                /* val = 0 */
 668        SNDRV_TIMER_EVENT_EARLY,                /* val = 0, early event */
 669        SNDRV_TIMER_EVENT_SUSPEND,              /* val = 0 */
 670        SNDRV_TIMER_EVENT_RESUME,               /* val = resolution in ns */
 671        /* master timer events for slave timer instances */
 672        SNDRV_TIMER_EVENT_MSTART = SNDRV_TIMER_EVENT_START + 10,
 673        SNDRV_TIMER_EVENT_MSTOP = SNDRV_TIMER_EVENT_STOP + 10,
 674        SNDRV_TIMER_EVENT_MCONTINUE = SNDRV_TIMER_EVENT_CONTINUE + 10,
 675        SNDRV_TIMER_EVENT_MPAUSE = SNDRV_TIMER_EVENT_PAUSE + 10,
 676        SNDRV_TIMER_EVENT_MSUSPEND = SNDRV_TIMER_EVENT_SUSPEND + 10,
 677        SNDRV_TIMER_EVENT_MRESUME = SNDRV_TIMER_EVENT_RESUME + 10,
 678};
 679
 680struct snd_timer_tread {
 681        int event;
 682        struct timespec tstamp;
 683        unsigned int val;
 684};
 685
 686/****************************************************************************
 687 *                                                                          *
 688 *        Section for driver control interface - /dev/snd/control?          *
 689 *                                                                          *
 690 ****************************************************************************/
 691
 692#define SNDRV_CTL_VERSION               SNDRV_PROTOCOL_VERSION(2, 0, 4)
 693
 694struct snd_ctl_card_info {
 695        int card;                       /* card number */
 696        int pad;                        /* reserved for future (was type) */
 697        unsigned char id[16];           /* ID of card (user selectable) */
 698        unsigned char driver[16];       /* Driver name */
 699        unsigned char name[32];         /* Short name of soundcard */
 700        unsigned char longname[80];     /* name + info text about soundcard */
 701        unsigned char reserved_[16];    /* reserved for future (was ID of mixer) */
 702        unsigned char mixername[80];    /* visual mixer identification */
 703        unsigned char components[80];   /* card components / fine identification, delimited with one space (AC97 etc..) */
 704        unsigned char reserved[48];     /* reserved for future */
 705};
 706
 707typedef int __bitwise snd_ctl_elem_type_t;
 708#define SNDRV_CTL_ELEM_TYPE_NONE        ((__force snd_ctl_elem_type_t) 0) /* invalid */
 709#define SNDRV_CTL_ELEM_TYPE_BOOLEAN     ((__force snd_ctl_elem_type_t) 1) /* boolean type */
 710#define SNDRV_CTL_ELEM_TYPE_INTEGER     ((__force snd_ctl_elem_type_t) 2) /* integer type */
 711#define SNDRV_CTL_ELEM_TYPE_ENUMERATED  ((__force snd_ctl_elem_type_t) 3) /* enumerated type */
 712#define SNDRV_CTL_ELEM_TYPE_BYTES       ((__force snd_ctl_elem_type_t) 4) /* byte array */
 713#define SNDRV_CTL_ELEM_TYPE_IEC958      ((__force snd_ctl_elem_type_t) 5) /* IEC958 (S/PDIF) setup */
 714#define SNDRV_CTL_ELEM_TYPE_INTEGER64   ((__force snd_ctl_elem_type_t) 6) /* 64-bit integer type */
 715#define SNDRV_CTL_ELEM_TYPE_LAST        SNDRV_CTL_ELEM_TYPE_INTEGER64
 716
 717typedef int __bitwise snd_ctl_elem_iface_t;
 718#define SNDRV_CTL_ELEM_IFACE_CARD       ((__force snd_ctl_elem_iface_t) 0) /* global control */
 719#define SNDRV_CTL_ELEM_IFACE_HWDEP      ((__force snd_ctl_elem_iface_t) 1) /* hardware dependent device */
 720#define SNDRV_CTL_ELEM_IFACE_MIXER      ((__force snd_ctl_elem_iface_t) 2) /* virtual mixer device */
 721#define SNDRV_CTL_ELEM_IFACE_PCM        ((__force snd_ctl_elem_iface_t) 3) /* PCM device */
 722#define SNDRV_CTL_ELEM_IFACE_RAWMIDI    ((__force snd_ctl_elem_iface_t) 4) /* RawMidi device */
 723#define SNDRV_CTL_ELEM_IFACE_TIMER      ((__force snd_ctl_elem_iface_t) 5) /* timer device */
 724#define SNDRV_CTL_ELEM_IFACE_SEQUENCER  ((__force snd_ctl_elem_iface_t) 6) /* sequencer client */
 725#define SNDRV_CTL_ELEM_IFACE_LAST       SNDRV_CTL_ELEM_IFACE_SEQUENCER
 726
 727#define SNDRV_CTL_ELEM_ACCESS_READ              (1<<0)
 728#define SNDRV_CTL_ELEM_ACCESS_WRITE             (1<<1)
 729#define SNDRV_CTL_ELEM_ACCESS_READWRITE         (SNDRV_CTL_ELEM_ACCESS_READ|SNDRV_CTL_ELEM_ACCESS_WRITE)
 730#define SNDRV_CTL_ELEM_ACCESS_VOLATILE          (1<<2)  /* control value may be changed without a notification */
 731#define SNDRV_CTL_ELEM_ACCESS_TIMESTAMP         (1<<3)  /* when was control changed */
 732#define SNDRV_CTL_ELEM_ACCESS_TLV_READ          (1<<4)  /* TLV read is possible */
 733#define SNDRV_CTL_ELEM_ACCESS_TLV_WRITE         (1<<5)  /* TLV write is possible */
 734#define SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE     (SNDRV_CTL_ELEM_ACCESS_TLV_READ|SNDRV_CTL_ELEM_ACCESS_TLV_WRITE)
 735#define SNDRV_CTL_ELEM_ACCESS_TLV_COMMAND       (1<<6)  /* TLV command is possible */
 736#define SNDRV_CTL_ELEM_ACCESS_INACTIVE          (1<<8)  /* control does actually nothing, but may be updated */
 737#define SNDRV_CTL_ELEM_ACCESS_LOCK              (1<<9)  /* write lock */
 738#define SNDRV_CTL_ELEM_ACCESS_OWNER             (1<<10) /* write lock owner */
 739#define SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK      (1<<28) /* kernel use a TLV callback */ 
 740#define SNDRV_CTL_ELEM_ACCESS_USER              (1<<29) /* user space element */
 741#define SNDRV_CTL_ELEM_ACCESS_DINDIRECT         (1<<30) /* indirect access for matrix dimensions in the info structure */
 742#define SNDRV_CTL_ELEM_ACCESS_INDIRECT          (1<<31) /* indirect access for element value in the value structure */
 743
 744/* for further details see the ACPI and PCI power management specification */
 745#define SNDRV_CTL_POWER_D0              0x0000  /* full On */
 746#define SNDRV_CTL_POWER_D1              0x0100  /* partial On */
 747#define SNDRV_CTL_POWER_D2              0x0200  /* partial On */
 748#define SNDRV_CTL_POWER_D3              0x0300  /* Off */
 749#define SNDRV_CTL_POWER_D3hot           (SNDRV_CTL_POWER_D3|0x0000)     /* Off, with power */
 750#define SNDRV_CTL_POWER_D3cold          (SNDRV_CTL_POWER_D3|0x0001)     /* Off, without power */
 751
 752struct snd_ctl_elem_id {
 753        unsigned int numid;             /* numeric identifier, zero = invalid */
 754        snd_ctl_elem_iface_t iface;     /* interface identifier */
 755        unsigned int device;            /* device/client number */
 756        unsigned int subdevice;         /* subdevice (substream) number */
 757        unsigned char name[44];         /* ASCII name of item */
 758        unsigned int index;             /* index of item */
 759};
 760
 761struct snd_ctl_elem_list {
 762        unsigned int offset;            /* W: first element ID to get */
 763        unsigned int space;             /* W: count of element IDs to get */
 764        unsigned int used;              /* R: count of element IDs set */
 765        unsigned int count;             /* R: count of all elements */
 766        struct snd_ctl_elem_id __user *pids; /* R: IDs */
 767        unsigned char reserved[50];
 768};
 769
 770struct snd_ctl_elem_info {
 771        struct snd_ctl_elem_id id;      /* W: element ID */
 772        snd_ctl_elem_type_t type;       /* R: value type - SNDRV_CTL_ELEM_TYPE_* */
 773        unsigned int access;            /* R: value access (bitmask) - SNDRV_CTL_ELEM_ACCESS_* */
 774        unsigned int count;             /* count of values */
 775        pid_t owner;                    /* owner's PID of this control */
 776        union {
 777                struct {
 778                        long min;               /* R: minimum value */
 779                        long max;               /* R: maximum value */
 780                        long step;              /* R: step (0 variable) */
 781                } integer;
 782                struct {
 783                        long long min;          /* R: minimum value */
 784                        long long max;          /* R: maximum value */
 785                        long long step;         /* R: step (0 variable) */
 786                } integer64;
 787                struct {
 788                        unsigned int items;     /* R: number of items */
 789                        unsigned int item;      /* W: item number */
 790                        char name[64];          /* R: value name */
 791                } enumerated;
 792                unsigned char reserved[128];
 793        } value;
 794        union {
 795                unsigned short d[4];            /* dimensions */
 796                unsigned short *d_ptr;          /* indirect */
 797        } dimen;
 798        unsigned char reserved[64-4*sizeof(unsigned short)];
 799};
 800
 801struct snd_ctl_elem_value {
 802        struct snd_ctl_elem_id id;      /* W: element ID */
 803        unsigned int indirect: 1;       /* W: use indirect pointer (xxx_ptr member) */
 804        union {
 805                union {
 806                        long value[128];
 807                        long *value_ptr;
 808                } integer;
 809                union {
 810                        long long value[64];
 811                        long long *value_ptr;
 812                } integer64;
 813                union {
 814                        unsigned int item[128];
 815                        unsigned int *item_ptr;
 816                } enumerated;
 817                union {
 818                        unsigned char data[512];
 819                        unsigned char *data_ptr;
 820                } bytes;
 821                struct snd_aes_iec958 iec958;
 822        } value;                /* RO */
 823        struct timespec tstamp;
 824        unsigned char reserved[128-sizeof(struct timespec)];
 825};
 826
 827struct snd_ctl_tlv {
 828        unsigned int numid;     /* control element numeric identification */
 829        unsigned int length;    /* in bytes aligned to 4 */
 830        unsigned int tlv[0];    /* first TLV */
 831};
 832
 833enum {
 834        SNDRV_CTL_IOCTL_PVERSION = _IOR('U', 0x00, int),
 835        SNDRV_CTL_IOCTL_CARD_INFO = _IOR('U', 0x01, struct snd_ctl_card_info),
 836        SNDRV_CTL_IOCTL_ELEM_LIST = _IOWR('U', 0x10, struct snd_ctl_elem_list),
 837        SNDRV_CTL_IOCTL_ELEM_INFO = _IOWR('U', 0x11, struct snd_ctl_elem_info),
 838        SNDRV_CTL_IOCTL_ELEM_READ = _IOWR('U', 0x12, struct snd_ctl_elem_value),
 839        SNDRV_CTL_IOCTL_ELEM_WRITE = _IOWR('U', 0x13, struct snd_ctl_elem_value),
 840        SNDRV_CTL_IOCTL_ELEM_LOCK = _IOW('U', 0x14, struct snd_ctl_elem_id),
 841        SNDRV_CTL_IOCTL_ELEM_UNLOCK = _IOW('U', 0x15, struct snd_ctl_elem_id),
 842        SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS = _IOWR('U', 0x16, int),
 843        SNDRV_CTL_IOCTL_ELEM_ADD = _IOWR('U', 0x17, struct snd_ctl_elem_info),
 844        SNDRV_CTL_IOCTL_ELEM_REPLACE = _IOWR('U', 0x18, struct snd_ctl_elem_info),
 845        SNDRV_CTL_IOCTL_ELEM_REMOVE = _IOWR('U', 0x19, struct snd_ctl_elem_id),
 846        SNDRV_CTL_IOCTL_TLV_READ = _IOWR('U', 0x1a, struct snd_ctl_tlv),
 847        SNDRV_CTL_IOCTL_TLV_WRITE = _IOWR('U', 0x1b, struct snd_ctl_tlv),
 848        SNDRV_CTL_IOCTL_TLV_COMMAND = _IOWR('U', 0x1c, struct snd_ctl_tlv),
 849        SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE = _IOWR('U', 0x20, int),
 850        SNDRV_CTL_IOCTL_HWDEP_INFO = _IOR('U', 0x21, struct snd_hwdep_info),
 851        SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE = _IOR('U', 0x30, int),
 852        SNDRV_CTL_IOCTL_PCM_INFO = _IOWR('U', 0x31, struct snd_pcm_info),
 853        SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE = _IOW('U', 0x32, int),
 854        SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE = _IOWR('U', 0x40, int),
 855        SNDRV_CTL_IOCTL_RAWMIDI_INFO = _IOWR('U', 0x41, struct snd_rawmidi_info),
 856        SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE = _IOW('U', 0x42, int),
 857        SNDRV_CTL_IOCTL_POWER = _IOWR('U', 0xd0, int),
 858        SNDRV_CTL_IOCTL_POWER_STATE = _IOR('U', 0xd1, int),
 859};
 860
 861/*
 862 *  Read interface.
 863 */
 864
 865enum sndrv_ctl_event_type {
 866        SNDRV_CTL_EVENT_ELEM = 0,
 867        SNDRV_CTL_EVENT_LAST = SNDRV_CTL_EVENT_ELEM,
 868};
 869
 870#define SNDRV_CTL_EVENT_MASK_VALUE      (1<<0)  /* element value was changed */
 871#define SNDRV_CTL_EVENT_MASK_INFO       (1<<1)  /* element info was changed */
 872#define SNDRV_CTL_EVENT_MASK_ADD        (1<<2)  /* element was added */
 873#define SNDRV_CTL_EVENT_MASK_TLV        (1<<3)  /* element TLV tree was changed */
 874#define SNDRV_CTL_EVENT_MASK_REMOVE     (~0U)   /* element was removed */
 875
 876struct snd_ctl_event {
 877        int type;       /* event type - SNDRV_CTL_EVENT_* */
 878        union {
 879                struct {
 880                        unsigned int mask;
 881                        struct snd_ctl_elem_id id;
 882                } elem;
 883                unsigned char data8[60];
 884        } data;
 885};
 886
 887/*
 888 *  Control names
 889 */
 890
 891#define SNDRV_CTL_NAME_NONE                             ""
 892#define SNDRV_CTL_NAME_PLAYBACK                         "Playback "
 893#define SNDRV_CTL_NAME_CAPTURE                          "Capture "
 894
 895#define SNDRV_CTL_NAME_IEC958_NONE                      ""
 896#define SNDRV_CTL_NAME_IEC958_SWITCH                    "Switch"
 897#define SNDRV_CTL_NAME_IEC958_VOLUME                    "Volume"
 898#define SNDRV_CTL_NAME_IEC958_DEFAULT                   "Default"
 899#define SNDRV_CTL_NAME_IEC958_MASK                      "Mask"
 900#define SNDRV_CTL_NAME_IEC958_CON_MASK                  "Con Mask"
 901#define SNDRV_CTL_NAME_IEC958_PRO_MASK                  "Pro Mask"
 902#define SNDRV_CTL_NAME_IEC958_PCM_STREAM                "PCM Stream"
 903#define SNDRV_CTL_NAME_IEC958(expl,direction,what)      "IEC958 " expl SNDRV_CTL_NAME_##direction SNDRV_CTL_NAME_IEC958_##what
 904
 905/*
 906 *
 907 */
 908
 909struct snd_xferv {
 910        const struct iovec *vector;
 911        unsigned long count;
 912};
 913
 914enum {
 915        SNDRV_IOCTL_READV = _IOW('K', 0x00, struct snd_xferv),
 916        SNDRV_IOCTL_WRITEV = _IOW('K', 0x01, struct snd_xferv),
 917};
 918
 919#endif /* __SOUND_ASOUND_H */
 920