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 #include <linux/types.h>
  27
  28 #ifdef __KERNEL__
  29 #include <linux/ioctl.h>
  30 #include <linux/time.h>
  31 #include <asm/byteorder.h>
  32
  33 #ifdef  __LITTLE_ENDIAN
  34 #define SNDRV_LITTLE_ENDIAN
  35 #else
  36 #ifdef __BIG_ENDIAN
  37 #define SNDRV_BIG_ENDIAN
  38 #else
  39 #error "Unsupported endian..."
  40 #endif
  41 #endif
  42
  43 #endif /* __KERNEL__ **/
  44
  45 /*
  46  *  protocol version
  47  */
  48
  49 #define SNDRV_PROTOCOL_VERSION(major, minor, subminor) (((major)<<16)|((minor)<<8)|(subminor))
  50 #define SNDRV_PROTOCOL_MAJOR(version) (((version)>>16)&0xffff)
  51 #define SNDRV_PROTOCOL_MINOR(version) (((version)>>8)&0xff)
  52 #define SNDRV_PROTOCOL_MICRO(version) ((version)&0xff)
  53 #define SNDRV_PROTOCOL_INCOMPATIBLE(kversion, uversion) \
  54         (SNDRV_PROTOCOL_MAJOR(kversion) != SNDRV_PROTOCOL_MAJOR(uversion) || \
  55          (SNDRV_PROTOCOL_MAJOR(kversion) == SNDRV_PROTOCOL_MAJOR(uversion) && \
  56            SNDRV_PROTOCOL_MINOR(kversion) != SNDRV_PROTOCOL_MINOR(uversion)))
  57
  58 /****************************************************************************
  59  *                                                                          *
  60  *        Digital audio interface                                           *
  61  *                                                                          *
  62  ****************************************************************************/
  63
  64 struct snd_aes_iec958 {
  65         unsigned char status[24];       /* AES/IEC958 channel status bits */
  66         unsigned char subcode[147];     /* AES/IEC958 subcode bits */
  67         unsigned char pad;              /* nothing */
  68         unsigned char dig_subframe[4];  /* AES/IEC958 subframe bits */
  69 };
  70
  71 /****************************************************************************
  72  *                                                                          *
  73  *      Section for driver hardware dependent interface - /dev/snd/hw?      *
  74  *                                                                          *
  75  ****************************************************************************/
  76
  77 #define SNDRV_HWDEP_VERSION             SNDRV_PROTOCOL_VERSION(1, 0, 1)
  78
  79 enum {
  80         SNDRV_HWDEP_IFACE_OPL2 = 0,
  81         SNDRV_HWDEP_IFACE_OPL3,
  82         SNDRV_HWDEP_IFACE_OPL4,
  83         SNDRV_HWDEP_IFACE_SB16CSP,      /* Creative Signal Processor */
  84         SNDRV_HWDEP_IFACE_EMU10K1,      /* FX8010 processor in EMU10K1 chip */
  85         SNDRV_HWDEP_IFACE_YSS225,       /* Yamaha FX processor */
  86         SNDRV_HWDEP_IFACE_ICS2115,      /* Wavetable synth */
  87         SNDRV_HWDEP_IFACE_SSCAPE,       /* Ensoniq SoundScape ISA card (MC68EC000) */
  88         SNDRV_HWDEP_IFACE_VX,           /* Digigram VX cards */
  89         SNDRV_HWDEP_IFACE_MIXART,       /* Digigram miXart cards */
  90         SNDRV_HWDEP_IFACE_USX2Y,        /* Tascam US122, US224 & US428 usb */
  91         SNDRV_HWDEP_IFACE_EMUX_WAVETABLE, /* EmuX wavetable */
  92         SNDRV_HWDEP_IFACE_BLUETOOTH,    /* Bluetooth audio */
  93         SNDRV_HWDEP_IFACE_USX2Y_PCM,    /* Tascam US122, US224 & US428 rawusb pcm */
  94         SNDRV_HWDEP_IFACE_PCXHR,        /* Digigram PCXHR */
  95         SNDRV_HWDEP_IFACE_SB_RC,        /* SB Extigy/Audigy2NX remote control */
  96         SNDRV_HWDEP_IFACE_HDA,          /* HD-audio */
  97         SNDRV_HWDEP_IFACE_USB_STREAM,   /* direct access to usb stream */
  98
  99         /* Don't forget to change the following: */
 100         SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_USB_STREAM
 101 };
 102
 103 struct snd_hwdep_info {
 104         unsigned int device;            /* WR: device number */
 105         int card;                       /* R: card number */
 106         unsigned char id[64];           /* ID (user selectable) */
 107         unsigned char name[80];         /* hwdep name */
 108         int iface;                      /* hwdep interface */
 109         unsigned char reserved[64];     /* reserved for future */
 110 };
 111
 112 /* generic DSP loader */
 113 struct snd_hwdep_dsp_status {
 114         unsigned int version;           /* R: driver-specific version */
 115         unsigned char id[32];           /* R: driver-specific ID string */
 116         unsigned int num_dsps;          /* R: number of DSP images to transfer */
 117         unsigned int dsp_loaded;        /* R: bit flags indicating the loaded DSPs */
 118         unsigned int chip_ready;        /* R: 1 = initialization finished */
 119         unsigned char reserved[16];     /* reserved for future use */
 120 };
 121
 122 struct snd_hwdep_dsp_image {
 123         unsigned int index;             /* W: DSP index */
 124         unsigned char name[64];         /* W: ID (e.g. file name) */
 125         unsigned char __user *image;    /* W: binary image */
 126         size_t length;                  /* W: size of image in bytes */
 127         unsigned long driver_data;      /* W: driver-specific data */
 128 };
 129
 130 #define SNDRV_HWDEP_IOCTL_PVERSION      _IOR ('H', 0x00, int)
 131 #define SNDRV_HWDEP_IOCTL_INFO          _IOR ('H', 0x01, struct snd_hwdep_info)
 132 #define SNDRV_HWDEP_IOCTL_DSP_STATUS    _IOR('H', 0x02, struct snd_hwdep_dsp_status)
 133 #define SNDRV_HWDEP_IOCTL_DSP_LOAD      _IOW('H', 0x03, struct snd_hwdep_dsp_image)
 134
 135 /*****************************************************************************
 136  *                                                                           *
 137  *             Digital Audio (PCM) interface - /dev/snd/pcm??                *
 138  *                                                                           *
 139  *****************************************************************************/
 140
 141 #define SNDRV_PCM_VERSION               SNDRV_PROTOCOL_VERSION(2, 0, 9)
 142
 143 typedef unsigned long snd_pcm_uframes_t;
 144 typedef signed long snd_pcm_sframes_t;
 145
 146 enum {
 147         SNDRV_PCM_CLASS_GENERIC = 0,    /* standard mono or stereo device */
 148         SNDRV_PCM_CLASS_MULTI,          /* multichannel device */
 149         SNDRV_PCM_CLASS_MODEM,          /* software modem class */
 150         SNDRV_PCM_CLASS_DIGITIZER,      /* digitizer class */
 151         /* Don't forget to change the following: */
 152         SNDRV_PCM_CLASS_LAST = SNDRV_PCM_CLASS_DIGITIZER,
 153 };
 154
 155 enum {
 156         SNDRV_PCM_SUBCLASS_GENERIC_MIX = 0, /* mono or stereo subdevices are mixed together */
 157         SNDRV_PCM_SUBCLASS_MULTI_MIX,   /* multichannel subdevices are mixed together */
 158         /* Don't forget to change the following: */
 159         SNDRV_PCM_SUBCLASS_LAST = SNDRV_PCM_SUBCLASS_MULTI_MIX,
 160 };
 161
 162 enum {
 163         SNDRV_PCM_STREAM_PLAYBACK = 0,
 164         SNDRV_PCM_STREAM_CAPTURE,
 165         SNDRV_PCM_STREAM_LAST = SNDRV_PCM_STREAM_CAPTURE,
 166 };
 167
 168 typedef int __bitwise snd_pcm_access_t;
 169 #define SNDRV_PCM_ACCESS_MMAP_INTERLEAVED       ((__force snd_pcm_access_t) 0) /* interleaved mmap */
 170 #define SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED    ((__force snd_pcm_access_t) 1) /* noninterleaved mmap */
 171 #define SNDRV_PCM_ACCESS_MMAP_COMPLEX           ((__force snd_pcm_access_t) 2) /* complex mmap */
 172 #define SNDRV_PCM_ACCESS_RW_INTERLEAVED         ((__force snd_pcm_access_t) 3) /* readi/writei */
 173 #define SNDRV_PCM_ACCESS_RW_NONINTERLEAVED      ((__force snd_pcm_access_t) 4) /* readn/writen */
 174 #define SNDRV_PCM_ACCESS_LAST           SNDRV_PCM_ACCESS_RW_NONINTERLEAVED
 175
 176 typedef int __bitwise snd_pcm_format_t;
 177 #define SNDRV_PCM_FORMAT_S8     ((__force snd_pcm_format_t) 0)
 178 #define SNDRV_PCM_FORMAT_U8     ((__force snd_pcm_format_t) 1)
 179 #define SNDRV_PCM_FORMAT_S16_LE ((__force snd_pcm_format_t) 2)
 180 #define SNDRV_PCM_FORMAT_S16_BE ((__force snd_pcm_format_t) 3)
 181 #define SNDRV_PCM_FORMAT_U16_LE ((__force snd_pcm_format_t) 4)
 182 #define SNDRV_PCM_FORMAT_U16_BE ((__force snd_pcm_format_t) 5)
 183 #define SNDRV_PCM_FORMAT_S24_LE ((__force snd_pcm_format_t) 6) /* low three bytes */
 184 #define SNDRV_PCM_FORMAT_S24_BE ((__force snd_pcm_format_t) 7) /* low three bytes */
 185 #define SNDRV_PCM_FORMAT_U24_LE ((__force snd_pcm_format_t) 8) /* low three bytes */
 186 #define SNDRV_PCM_FORMAT_U24_BE ((__force snd_pcm_format_t) 9) /* low three bytes */
 187 #define SNDRV_PCM_FORMAT_S32_LE ((__force snd_pcm_format_t) 10)
 188 #define SNDRV_PCM_FORMAT_S32_BE ((__force snd_pcm_format_t) 11)
 189 #define SNDRV_PCM_FORMAT_U32_LE ((__force snd_pcm_format_t) 12)
 190 #define SNDRV_PCM_FORMAT_U32_BE ((__force snd_pcm_format_t) 13)
 191 #define SNDRV_PCM_FORMAT_FLOAT_LE       ((__force snd_pcm_format_t) 14) /* 4-byte float, IEEE-754 32-bit, range -1.0 to 1.0 */
 192 #define SNDRV_PCM_FORMAT_FLOAT_BE       ((__force snd_pcm_format_t) 15) /* 4-byte float, IEEE-754 32-bit, range -1.0 to 1.0 */
 193 #define SNDRV_PCM_FORMAT_FLOAT64_LE     ((__force snd_pcm_format_t) 16) /* 8-byte float, IEEE-754 64-bit, range -1.0 to 1.0 */
 194 #define SNDRV_PCM_FORMAT_FLOAT64_BE     ((__force snd_pcm_format_t) 17) /* 8-byte float, IEEE-754 64-bit, range -1.0 to 1.0 */
 195 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE ((__force snd_pcm_format_t) 18) /* IEC-958 subframe, Little Endian */
 196 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE ((__force snd_pcm_format_t) 19) /* IEC-958 subframe, Big Endian */
 197 #define SNDRV_PCM_FORMAT_MU_LAW         ((__force snd_pcm_format_t) 20)
 198 #define SNDRV_PCM_FORMAT_A_LAW          ((__force snd_pcm_format_t) 21)
 199 #define SNDRV_PCM_FORMAT_IMA_ADPCM      ((__force snd_pcm_format_t) 22)
 200 #define SNDRV_PCM_FORMAT_MPEG           ((__force snd_pcm_format_t) 23)
 201 #define SNDRV_PCM_FORMAT_GSM            ((__force snd_pcm_format_t) 24)
 202 #define SNDRV_PCM_FORMAT_SPECIAL        ((__force snd_pcm_format_t) 31)
 203 #define SNDRV_PCM_FORMAT_S24_3LE        ((__force snd_pcm_format_t) 32) /* in three bytes */
 204 #define SNDRV_PCM_FORMAT_S24_3BE        ((__force snd_pcm_format_t) 33) /* in three bytes */
 205 #define SNDRV_PCM_FORMAT_U24_3LE        ((__force snd_pcm_format_t) 34) /* in three bytes */
 206 #define SNDRV_PCM_FORMAT_U24_3BE        ((__force snd_pcm_format_t) 35) /* in three bytes */
 207 #define SNDRV_PCM_FORMAT_S20_3LE        ((__force snd_pcm_format_t) 36) /* in three bytes */
 208 #define SNDRV_PCM_FORMAT_S20_3BE        ((__force snd_pcm_format_t) 37) /* in three bytes */
 209 #define SNDRV_PCM_FORMAT_U20_3LE        ((__force snd_pcm_format_t) 38) /* in three bytes */
 210 #define SNDRV_PCM_FORMAT_U20_3BE        ((__force snd_pcm_format_t) 39) /* in three bytes */
 211 #define SNDRV_PCM_FORMAT_S18_3LE        ((__force snd_pcm_format_t) 40) /* in three bytes */
 212 #define SNDRV_PCM_FORMAT_S18_3BE        ((__force snd_pcm_format_t) 41) /* in three bytes */
 213 #define SNDRV_PCM_FORMAT_U18_3LE        ((__force snd_pcm_format_t) 42) /* in three bytes */
 214 #define SNDRV_PCM_FORMAT_U18_3BE        ((__force snd_pcm_format_t) 43) /* in three bytes */
 215 #define SNDRV_PCM_FORMAT_LAST           SNDRV_PCM_FORMAT_U18_3BE
 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
 240 typedef int __bitwise snd_pcm_subformat_t;
 241 #define SNDRV_PCM_SUBFORMAT_STD         ((__force snd_pcm_subformat_t) 0)
 242 #define SNDRV_PCM_SUBFORMAT_LAST        SNDRV_PCM_SUBFORMAT_STD
 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
 259 typedef int __bitwise snd_pcm_state_t;
 260 #define SNDRV_PCM_STATE_OPEN            ((__force snd_pcm_state_t) 0) /* stream is open */
 261 #define SNDRV_PCM_STATE_SETUP           ((__force snd_pcm_state_t) 1) /* stream has a setup */
 262 #define SNDRV_PCM_STATE_PREPARED        ((__force snd_pcm_state_t) 2) /* stream is ready to start */
 263 #define SNDRV_PCM_STATE_RUNNING         ((__force snd_pcm_state_t) 3) /* stream is running */
 264 #define SNDRV_PCM_STATE_XRUN            ((__force snd_pcm_state_t) 4) /* stream reached an xrun */
 265 #define SNDRV_PCM_STATE_DRAINING        ((__force snd_pcm_state_t) 5) /* stream is draining */
 266 #define SNDRV_PCM_STATE_PAUSED          ((__force snd_pcm_state_t) 6) /* stream is paused */
 267 #define SNDRV_PCM_STATE_SUSPENDED       ((__force snd_pcm_state_t) 7) /* hardware is suspended */
 268 #define SNDRV_PCM_STATE_DISCONNECTED    ((__force snd_pcm_state_t) 8) /* hardware is disconnected */
 269 #define SNDRV_PCM_STATE_LAST            SNDRV_PCM_STATE_DISCONNECTED
 270
 271 enum {
 272         SNDRV_PCM_MMAP_OFFSET_DATA = 0x00000000,
 273         SNDRV_PCM_MMAP_OFFSET_STATUS = 0x80000000,
 274         SNDRV_PCM_MMAP_OFFSET_CONTROL = 0x81000000,
 275 };
 276
 277 union snd_pcm_sync_id {
 278         unsigned char id[16];
 279         unsigned short id16[8];
 280         unsigned int id32[4];
 281 };
 282
 283 struct snd_pcm_info {
 284         unsigned int device;            /* RO/WR (control): device number */
 285         unsigned int subdevice;         /* RO/WR (control): subdevice number */
 286         int stream;                     /* RO/WR (control): stream direction */
 287         int card;                       /* R: card number */
 288         unsigned char id[64];           /* ID (user selectable) */
 289         unsigned char name[80];         /* name of this device */
 290         unsigned char subname[32];      /* subdevice name */
 291         int dev_class;                  /* SNDRV_PCM_CLASS_* */
 292         int dev_subclass;               /* SNDRV_PCM_SUBCLASS_* */
 293         unsigned int subdevices_count;
 294         unsigned int subdevices_avail;
 295         union snd_pcm_sync_id sync;     /* hardware synchronization ID */
 296         unsigned char reserved[64];     /* reserved for future... */
 297 };
 298
 299 typedef int snd_pcm_hw_param_t;
 300 #define SNDRV_PCM_HW_PARAM_ACCESS       0       /* Access type */
 301 #define SNDRV_PCM_HW_PARAM_FORMAT       1       /* Format */
 302 #define SNDRV_PCM_HW_PARAM_SUBFORMAT    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  8       /* Bits per sample */
 307 #define SNDRV_PCM_HW_PARAM_FRAME_BITS   9       /* Bits per frame */
 308 #define SNDRV_PCM_HW_PARAM_CHANNELS     10      /* Channels */
 309 #define SNDRV_PCM_HW_PARAM_RATE         11      /* Approx rate */
 310 #define SNDRV_PCM_HW_PARAM_PERIOD_TIME  12      /* Approx distance between
 311                                                  * interrupts in us
 312                                                  */
 313 #define SNDRV_PCM_HW_PARAM_PERIOD_SIZE  13      /* Approx frames between
 314                                                  * interrupts
 315                                                  */
 316 #define SNDRV_PCM_HW_PARAM_PERIOD_BYTES 14      /* Approx bytes between
 317                                                  * interrupts
 318                                                  */
 319 #define SNDRV_PCM_HW_PARAM_PERIODS      15      /* Approx interrupts per
 320                                                  * buffer
 321                                                  */
 322 #define SNDRV_PCM_HW_PARAM_BUFFER_TIME  16      /* Approx duration of buffer
 323                                                  * in us
 324                                                  */
 325 #define SNDRV_PCM_HW_PARAM_BUFFER_SIZE  17      /* Size of buffer in frames */
 326 #define SNDRV_PCM_HW_PARAM_BUFFER_BYTES 18      /* Size of buffer in bytes */
 327 #define SNDRV_PCM_HW_PARAM_TICK_TIME    19      /* Approx tick duration in us */
 328 #define SNDRV_PCM_HW_PARAM_FIRST_INTERVAL       SNDRV_PCM_HW_PARAM_SAMPLE_BITS
 329 #define SNDRV_PCM_HW_PARAM_LAST_INTERVAL        SNDRV_PCM_HW_PARAM_TICK_TIME
 330
 331 #define SNDRV_PCM_HW_PARAMS_NORESAMPLE  (1<<0)  /* avoid rate resampling */
 332
 333 struct snd_interval {
 334         unsigned int min, max;
 335         unsigned int openmin:1,
 336                      openmax:1,
 337                      integer:1,
 338                      empty:1;
 339 };
 340
 341 #define SNDRV_MASK_MAX  256
 342
 343 struct snd_mask {
 344         __u32 bits[(SNDRV_MASK_MAX+31)/32];
 345 };
 346
 347 struct snd_pcm_hw_params {
 348         unsigned int flags;
 349         struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK -
 350                                SNDRV_PCM_HW_PARAM_FIRST_MASK + 1];
 351         struct snd_mask mres[5];        /* reserved masks */
 352         struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL -
 353                                         SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];
 354         struct snd_interval ires[9];    /* reserved intervals */
 355         unsigned int rmask;             /* W: requested masks */
 356         unsigned int cmask;             /* R: changed masks */
 357         unsigned int info;              /* R: Info flags for returned setup */
 358         unsigned int msbits;            /* R: used most significant bits */
 359         unsigned int rate_num;          /* R: rate numerator */
 360         unsigned int rate_den;          /* R: rate denominator */
 361         snd_pcm_uframes_t fifo_size;    /* R: chip FIFO size in frames */
 362         unsigned char reserved[64];     /* reserved for future */
 363 };
 364
 365 enum {
 366         SNDRV_PCM_TSTAMP_NONE = 0,
 367         SNDRV_PCM_TSTAMP_ENABLE,
 368         SNDRV_PCM_TSTAMP_LAST = SNDRV_PCM_TSTAMP_ENABLE,
 369 };
 370
 371 struct snd_pcm_sw_params {
 372         int tstamp_mode;                        /* timestamp mode */
 373         unsigned int period_step;
 374         unsigned int sleep_min;                 /* min ticks to sleep */
 375         snd_pcm_uframes_t avail_min;            /* min avail frames for wakeup */
 376         snd_pcm_uframes_t xfer_align;           /* obsolete: xfer size need to be a multiple */
 377         snd_pcm_uframes_t start_threshold;      /* min hw_avail frames for automatic start */
 378         snd_pcm_uframes_t stop_threshold;       /* min avail frames for automatic stop */
 379         snd_pcm_uframes_t silence_threshold;    /* min distance from noise for silence filling */
 380         snd_pcm_uframes_t silence_size;         /* silence block size */
 381         snd_pcm_uframes_t boundary;             /* pointers wrap point */
 382         unsigned char reserved[64];             /* reserved for future */
 383 };
 384
 385 struct snd_pcm_channel_info {
 386         unsigned int channel;
 387         __kernel_off_t offset;          /* mmap offset */
 388         unsigned int first;             /* offset to first sample in bits */
 389         unsigned int step;              /* samples distance in bits */
 390 };
 391
 392 struct snd_pcm_status {
 393         snd_pcm_state_t state;          /* stream state */
 394         struct timespec trigger_tstamp; /* time when stream was started/stopped/paused */
 395         struct timespec tstamp;         /* reference timestamp */
 396         snd_pcm_uframes_t appl_ptr;     /* appl ptr */
 397         snd_pcm_uframes_t hw_ptr;       /* hw ptr */
 398         snd_pcm_sframes_t delay;        /* current delay in frames */
 399         snd_pcm_uframes_t avail;        /* number of frames available */
 400         snd_pcm_uframes_t avail_max;    /* max frames available on hw since last status */
 401         snd_pcm_uframes_t overrange;    /* count of ADC (capture) overrange detections from last status */
 402         snd_pcm_state_t suspended_state; /* suspended stream state */
 403         unsigned char reserved[60];     /* must be filled with zero */
 404 };
 405
 406 struct snd_pcm_mmap_status {
 407         snd_pcm_state_t state;          /* RO: state - SNDRV_PCM_STATE_XXXX */
 408         int pad1;                       /* Needed for 64 bit alignment */
 409         snd_pcm_uframes_t hw_ptr;       /* RO: hw ptr (0...boundary-1) */
 410         struct timespec tstamp;         /* Timestamp */
 411         snd_pcm_state_t suspended_state; /* RO: suspended stream state */
 412 };
 413
 414 struct snd_pcm_mmap_control {
 415         snd_pcm_uframes_t appl_ptr;     /* RW: appl ptr (0...boundary-1) */
 416         snd_pcm_uframes_t avail_min;    /* RW: min available frames for wakeup */
 417 };
 418
 419 #define SNDRV_PCM_SYNC_PTR_HWSYNC       (1<<0)  /* execute hwsync */
 420 #define SNDRV_PCM_SYNC_PTR_APPL         (1<<1)  /* get appl_ptr from driver (r/w op) */
 421 #define SNDRV_PCM_SYNC_PTR_AVAIL_MIN    (1<<2)  /* get avail_min from driver */
 422
 423 struct snd_pcm_sync_ptr {
 424         unsigned int flags;
 425         union {
 426                 struct snd_pcm_mmap_status status;
 427                 unsigned char reserved[64];
 428         } s;
 429         union {
 430                 struct snd_pcm_mmap_control control;
 431                 unsigned char reserved[64];
 432         } c;
 433 };
 434
 435 struct snd_xferi {
 436         snd_pcm_sframes_t result;
 437         void __user *buf;
 438         snd_pcm_uframes_t frames;
 439 };
 440
 441 struct snd_xfern {
 442         snd_pcm_sframes_t result;
 443         void __user * __user *bufs;
 444         snd_pcm_uframes_t frames;
 445 };
 446
 447 enum {
 448         SNDRV_PCM_TSTAMP_TYPE_GETTIMEOFDAY = 0, /* gettimeofday equivalent */
 449         SNDRV_PCM_TSTAMP_TYPE_MONOTONIC,        /* posix_clock_monotonic equivalent */
 450         SNDRV_PCM_TSTAMP_TYPE_LAST = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC,
 451 };
 452
 453 #define SNDRV_PCM_IOCTL_PVERSION        _IOR('A', 0x00, int)
 454 #define SNDRV_PCM_IOCTL_INFO            _IOR('A', 0x01, struct snd_pcm_info)
 455 #define SNDRV_PCM_IOCTL_TSTAMP          _IOW('A', 0x02, int)
 456 #define SNDRV_PCM_IOCTL_TTSTAMP         _IOW('A', 0x03, int)
 457 #define SNDRV_PCM_IOCTL_HW_REFINE       _IOWR('A', 0x10, struct snd_pcm_hw_params)
 458 #define SNDRV_PCM_IOCTL_HW_PARAMS       _IOWR('A', 0x11, struct snd_pcm_hw_params)
 459 #define SNDRV_PCM_IOCTL_HW_FREE         _IO('A', 0x12)
 460 #define SNDRV_PCM_IOCTL_SW_PARAMS       _IOWR('A', 0x13, struct snd_pcm_sw_params)
 461 #define SNDRV_PCM_IOCTL_STATUS          _IOR('A', 0x20, struct snd_pcm_status)
 462 #define SNDRV_PCM_IOCTL_DELAY           _IOR('A', 0x21, snd_pcm_sframes_t)
 463 #define SNDRV_PCM_IOCTL_HWSYNC          _IO('A', 0x22)
 464 #define SNDRV_PCM_IOCTL_SYNC_PTR        _IOWR('A', 0x23, struct snd_pcm_sync_ptr)
 465 #define SNDRV_PCM_IOCTL_CHANNEL_INFO    _IOR('A', 0x32, struct snd_pcm_channel_info)
 466 #define SNDRV_PCM_IOCTL_PREPARE         _IO('A', 0x40)
 467 #define SNDRV_PCM_IOCTL_RESET           _IO('A', 0x41)
 468 #define SNDRV_PCM_IOCTL_START           _IO('A', 0x42)
 469 #define SNDRV_PCM_IOCTL_DROP            _IO('A', 0x43)
 470 #define SNDRV_PCM_IOCTL_DRAIN           _IO('A', 0x44)
 471 #define SNDRV_PCM_IOCTL_PAUSE           _IOW('A', 0x45, int)
 472 #define SNDRV_PCM_IOCTL_REWIND          _IOW('A', 0x46, snd_pcm_uframes_t)
 473 #define SNDRV_PCM_IOCTL_RESUME          _IO('A', 0x47)
 474 #define SNDRV_PCM_IOCTL_XRUN            _IO('A', 0x48)
 475 #define SNDRV_PCM_IOCTL_FORWARD         _IOW('A', 0x49, snd_pcm_uframes_t)
 476 #define SNDRV_PCM_IOCTL_WRITEI_FRAMES   _IOW('A', 0x50, struct snd_xferi)
 477 #define SNDRV_PCM_IOCTL_READI_FRAMES    _IOR('A', 0x51, struct snd_xferi)
 478 #define SNDRV_PCM_IOCTL_WRITEN_FRAMES   _IOW('A', 0x52, struct snd_xfern)
 479 #define SNDRV_PCM_IOCTL_READN_FRAMES    _IOR('A', 0x53, struct snd_xfern)
 480 #define SNDRV_PCM_IOCTL_LINK            _IOW('A', 0x60, int)
 481 #define SNDRV_PCM_IOCTL_UNLINK          _IO('A', 0x61)
 482
 483 /*****************************************************************************
 484  *                                                                           *
 485  *                            MIDI v1.0 interface                            *
 486  *                                                                           *
 487  *****************************************************************************/
 488
 489 /*
 490  *  Raw MIDI section - /dev/snd/midi??
 491  */
 492
 493 #define SNDRV_RAWMIDI_VERSION           SNDRV_PROTOCOL_VERSION(2, 0, 0)
 494
 495 enum {
 496         SNDRV_RAWMIDI_STREAM_OUTPUT = 0,
 497         SNDRV_RAWMIDI_STREAM_INPUT,
 498         SNDRV_RAWMIDI_STREAM_LAST = SNDRV_RAWMIDI_STREAM_INPUT,
 499 };
 500
 501 #define SNDRV_RAWMIDI_INFO_OUTPUT               0x00000001
 502 #define SNDRV_RAWMIDI_INFO_INPUT                0x00000002
 503 #define SNDRV_RAWMIDI_INFO_DUPLEX               0x00000004
 504
 505 struct snd_rawmidi_info {
 506         unsigned int device;            /* RO/WR (control): device number */
 507         unsigned int subdevice;         /* RO/WR (control): subdevice number */
 508         int stream;                     /* WR: stream */
 509         int card;                       /* R: card number */
 510         unsigned int flags;             /* SNDRV_RAWMIDI_INFO_XXXX */
 511         unsigned char id[64];           /* ID (user selectable) */
 512         unsigned char name[80];         /* name of device */
 513         unsigned char subname[32];      /* name of active or selected subdevice */
 514         unsigned int subdevices_count;
 515         unsigned int subdevices_avail;
 516         unsigned char reserved[64];     /* reserved for future use */
 517 };
 518
 519 struct snd_rawmidi_params {
 520         int stream;
 521         size_t buffer_size;             /* queue size in bytes */
 522         size_t avail_min;               /* minimum avail bytes for wakeup */
 523         unsigned int no_active_sensing: 1; /* do not send active sensing byte in close() */
 524         unsigned char reserved[16];     /* reserved for future use */
 525 };
 526
 527 struct snd_rawmidi_status {
 528         int stream;
 529         struct timespec tstamp;         /* Timestamp */
 530         size_t avail;                   /* available bytes */
 531         size_t xruns;                   /* count of overruns since last status (in bytes) */
 532         unsigned char reserved[16];     /* reserved for future use */
 533 };
 534
 535 #define SNDRV_RAWMIDI_IOCTL_PVERSION    _IOR('W', 0x00, int)
 536 #define SNDRV_RAWMIDI_IOCTL_INFO        _IOR('W', 0x01, struct snd_rawmidi_info)
 537 #define SNDRV_RAWMIDI_IOCTL_PARAMS      _IOWR('W', 0x10, struct snd_rawmidi_params)
 538 #define SNDRV_RAWMIDI_IOCTL_STATUS      _IOWR('W', 0x20, struct snd_rawmidi_status)
 539 #define SNDRV_RAWMIDI_IOCTL_DROP        _IOW('W', 0x30, int)
 540 #define SNDRV_RAWMIDI_IOCTL_DRAIN       _IOW('W', 0x31, int)
 541
 542 /*
 543  *  Timer section - /dev/snd/timer
 544  */
 545
 546 #define SNDRV_TIMER_VERSION             SNDRV_PROTOCOL_VERSION(2, 0, 5)
 547
 548 enum {
 549         SNDRV_TIMER_CLASS_NONE = -1,
 550         SNDRV_TIMER_CLASS_SLAVE = 0,
 551         SNDRV_TIMER_CLASS_GLOBAL,
 552         SNDRV_TIMER_CLASS_CARD,
 553         SNDRV_TIMER_CLASS_PCM,
 554         SNDRV_TIMER_CLASS_LAST = SNDRV_TIMER_CLASS_PCM,
 555 };
 556
 557 /* slave timer classes */
 558 enum {
 559         SNDRV_TIMER_SCLASS_NONE = 0,
 560         SNDRV_TIMER_SCLASS_APPLICATION,
 561         SNDRV_TIMER_SCLASS_SEQUENCER,           /* alias */
 562         SNDRV_TIMER_SCLASS_OSS_SEQUENCER,       /* alias */
 563         SNDRV_TIMER_SCLASS_LAST = SNDRV_TIMER_SCLASS_OSS_SEQUENCER,
 564 };
 565
 566 /* global timers (device member) */
 567 #define SNDRV_TIMER_GLOBAL_SYSTEM       0
 568 #define SNDRV_TIMER_GLOBAL_RTC          1
 569 #define SNDRV_TIMER_GLOBAL_HPET         2
 570 #define SNDRV_TIMER_GLOBAL_HRTIMER      3
 571
 572 /* info flags */
 573 #define SNDRV_TIMER_FLG_SLAVE           (1<<0)  /* cannot be controlled */
 574
 575 struct snd_timer_id {
 576         int dev_class;
 577         int dev_sclass;
 578         int card;
 579         int device;
 580         int subdevice;
 581 };
 582
 583 struct snd_timer_ginfo {
 584         struct snd_timer_id tid;        /* requested timer ID */
 585         unsigned int flags;             /* timer flags - SNDRV_TIMER_FLG_* */
 586         int card;                       /* card number */
 587         unsigned char id[64];           /* timer identification */
 588         unsigned char name[80];         /* timer name */
 589         unsigned long reserved0;        /* reserved for future use */
 590         unsigned long resolution;       /* average period resolution in ns */
 591         unsigned long resolution_min;   /* minimal period resolution in ns */
 592         unsigned long resolution_max;   /* maximal period resolution in ns */
 593         unsigned int clients;           /* active timer clients */
 594         unsigned char reserved[32];
 595 };
 596
 597 struct snd_timer_gparams {
 598         struct snd_timer_id tid;        /* requested timer ID */
 599         unsigned long period_num;       /* requested precise period duration (in seconds) - numerator */
 600         unsigned long period_den;       /* requested precise period duration (in seconds) - denominator */
 601         unsigned char reserved[32];
 602 };
 603
 604 struct snd_timer_gstatus {
 605         struct snd_timer_id tid;        /* requested timer ID */
 606         unsigned long resolution;       /* current period resolution in ns */
 607         unsigned long resolution_num;   /* precise current period resolution (in seconds) - numerator */
 608         unsigned long resolution_den;   /* precise current period resolution (in seconds) - denominator */
 609         unsigned char reserved[32];
 610 };
 611
 612 struct snd_timer_select {
 613         struct snd_timer_id id; /* bind to timer ID */
 614         unsigned char reserved[32];     /* reserved */
 615 };
 616
 617 struct snd_timer_info {
 618         unsigned int flags;             /* timer flags - SNDRV_TIMER_FLG_* */
 619         int card;                       /* card number */
 620         unsigned char id[64];           /* timer identificator */
 621         unsigned char name[80];         /* timer name */
 622         unsigned long reserved0;        /* reserved for future use */
 623         unsigned long resolution;       /* average period resolution in ns */
 624         unsigned char reserved[64];     /* reserved */
 625 };
 626
 627 #define SNDRV_TIMER_PSFLG_AUTO          (1<<0)  /* auto start, otherwise one-shot */
 628 #define SNDRV_TIMER_PSFLG_EXCLUSIVE     (1<<1)  /* exclusive use, precise start/stop/pause/continue */
 629 #define SNDRV_TIMER_PSFLG_EARLY_EVENT   (1<<2)  /* write early event to the poll queue */
 630
 631 struct snd_timer_params {
 632         unsigned int flags;             /* flags - SNDRV_MIXER_PSFLG_* */
 633         unsigned int ticks;             /* requested resolution in ticks */
 634         unsigned int queue_size;        /* total size of queue (32-1024) */
 635         unsigned int reserved0;         /* reserved, was: failure locations */
 636         unsigned int filter;            /* event filter (bitmask of SNDRV_TIMER_EVENT_*) */
 637         unsigned char reserved[60];     /* reserved */
 638 };
 639
 640 struct snd_timer_status {
 641         struct timespec tstamp;         /* Timestamp - last update */
 642         unsigned int resolution;        /* current period resolution in ns */
 643         unsigned int lost;              /* counter of master tick lost */
 644         unsigned int overrun;           /* count of read queue overruns */
 645         unsigned int queue;             /* used queue size */
 646         unsigned char reserved[64];     /* reserved */
 647 };
 648
 649 #define SNDRV_TIMER_IOCTL_PVERSION      _IOR('T', 0x00, int)
 650 #define SNDRV_TIMER_IOCTL_NEXT_DEVICE   _IOWR('T', 0x01, struct snd_timer_id)
 651 #define SNDRV_TIMER_IOCTL_TREAD         _IOW('T', 0x02, int)
 652 #define SNDRV_TIMER_IOCTL_GINFO         _IOWR('T', 0x03, struct snd_timer_ginfo)
 653 #define SNDRV_TIMER_IOCTL_GPARAMS       _IOW('T', 0x04, struct snd_timer_gparams)
 654 #define SNDRV_TIMER_IOCTL_GSTATUS       _IOWR('T', 0x05, struct snd_timer_gstatus)
 655 #define SNDRV_TIMER_IOCTL_SELECT        _IOW('T', 0x10, struct snd_timer_select)
 656 #define SNDRV_TIMER_IOCTL_INFO          _IOR('T', 0x11, struct snd_timer_info)
 657 #define SNDRV_TIMER_IOCTL_PARAMS        _IOW('T', 0x12, struct snd_timer_params)
 658 #define SNDRV_TIMER_IOCTL_STATUS        _IOR('T', 0x14, struct snd_timer_status)
 659 /* The following four ioctls are changed since 1.0.9 due to confliction */
 660 #define SNDRV_TIMER_IOCTL_START         _IO('T', 0xa0)
 661 #define SNDRV_TIMER_IOCTL_STOP          _IO('T', 0xa1)
 662 #define SNDRV_TIMER_IOCTL_CONTINUE      _IO('T', 0xa2)
 663 #define SNDRV_TIMER_IOCTL_PAUSE         _IO('T', 0xa3)
 664
 665 struct snd_timer_read {
 666         unsigned int resolution;
 667         unsigned int ticks;
 668 };
 669
 670 enum {
 671         SNDRV_TIMER_EVENT_RESOLUTION = 0,       /* val = resolution in ns */
 672         SNDRV_TIMER_EVENT_TICK,                 /* val = ticks */
 673         SNDRV_TIMER_EVENT_START,                /* val = resolution in ns */
 674         SNDRV_TIMER_EVENT_STOP,                 /* val = 0 */
 675         SNDRV_TIMER_EVENT_CONTINUE,             /* val = resolution in ns */
 676         SNDRV_TIMER_EVENT_PAUSE,                /* val = 0 */
 677         SNDRV_TIMER_EVENT_EARLY,                /* val = 0, early event */
 678         SNDRV_TIMER_EVENT_SUSPEND,              /* val = 0 */
 679         SNDRV_TIMER_EVENT_RESUME,               /* val = resolution in ns */
 680         /* master timer events for slave timer instances */
 681         SNDRV_TIMER_EVENT_MSTART = SNDRV_TIMER_EVENT_START + 10,
 682         SNDRV_TIMER_EVENT_MSTOP = SNDRV_TIMER_EVENT_STOP + 10,
 683         SNDRV_TIMER_EVENT_MCONTINUE = SNDRV_TIMER_EVENT_CONTINUE + 10,
 684         SNDRV_TIMER_EVENT_MPAUSE = SNDRV_TIMER_EVENT_PAUSE + 10,
 685         SNDRV_TIMER_EVENT_MSUSPEND = SNDRV_TIMER_EVENT_SUSPEND + 10,
 686         SNDRV_TIMER_EVENT_MRESUME = SNDRV_TIMER_EVENT_RESUME + 10,
 687 };
 688
 689 struct snd_timer_tread {
 690         int event;
 691         struct timespec tstamp;
 692         unsigned int val;
 693 };
 694
 695 /****************************************************************************
 696  *                                                                          *
 697  *        Section for driver control interface - /dev/snd/control?          *
 698  *                                                                          *
 699  ****************************************************************************/
 700
 701 #define SNDRV_CTL_VERSION               SNDRV_PROTOCOL_VERSION(2, 0, 6)
 702
 703 struct snd_ctl_card_info {
 704         int card;                       /* card number */
 705         int pad;                        /* reserved for future (was type) */
 706         unsigned char id[16];           /* ID of card (user selectable) */
 707         unsigned char driver[16];       /* Driver name */
 708         unsigned char name[32];         /* Short name of soundcard */
 709         unsigned char longname[80];     /* name + info text about soundcard */
 710         unsigned char reserved_[16];    /* reserved for future (was ID of mixer) */
 711         unsigned char mixername[80];    /* visual mixer identification */
 712         unsigned char components[128];  /* card components / fine identification, delimited with one space (AC97 etc..) */
 713 };
 714
 715 typedef int __bitwise snd_ctl_elem_type_t;
 716 #define SNDRV_CTL_ELEM_TYPE_NONE        ((__force snd_ctl_elem_type_t) 0) /* invalid */
 717 #define SNDRV_CTL_ELEM_TYPE_BOOLEAN     ((__force snd_ctl_elem_type_t) 1) /* boolean type */
 718 #define SNDRV_CTL_ELEM_TYPE_INTEGER     ((__force snd_ctl_elem_type_t) 2) /* integer type */
 719 #define SNDRV_CTL_ELEM_TYPE_ENUMERATED  ((__force snd_ctl_elem_type_t) 3) /* enumerated type */
 720 #define SNDRV_CTL_ELEM_TYPE_BYTES       ((__force snd_ctl_elem_type_t) 4) /* byte array */
 721 #define SNDRV_CTL_ELEM_TYPE_IEC958      ((__force snd_ctl_elem_type_t) 5) /* IEC958 (S/PDIF) setup */
 722 #define SNDRV_CTL_ELEM_TYPE_INTEGER64   ((__force snd_ctl_elem_type_t) 6) /* 64-bit integer type */
 723 #define SNDRV_CTL_ELEM_TYPE_LAST        SNDRV_CTL_ELEM_TYPE_INTEGER64
 724
 725 typedef int __bitwise snd_ctl_elem_iface_t;
 726 #define SNDRV_CTL_ELEM_IFACE_CARD       ((__force snd_ctl_elem_iface_t) 0) /* global control */
 727 #define SNDRV_CTL_ELEM_IFACE_HWDEP      ((__force snd_ctl_elem_iface_t) 1) /* hardware dependent device */
 728 #define SNDRV_CTL_ELEM_IFACE_MIXER      ((__force snd_ctl_elem_iface_t) 2) /* virtual mixer device */
 729 #define SNDRV_CTL_ELEM_IFACE_PCM        ((__force snd_ctl_elem_iface_t) 3) /* PCM device */
 730 #define SNDRV_CTL_ELEM_IFACE_RAWMIDI    ((__force snd_ctl_elem_iface_t) 4) /* RawMidi device */
 731 #define SNDRV_CTL_ELEM_IFACE_TIMER      ((__force snd_ctl_elem_iface_t) 5) /* timer device */
 732 #define SNDRV_CTL_ELEM_IFACE_SEQUENCER  ((__force snd_ctl_elem_iface_t) 6) /* sequencer client */
 733 #define SNDRV_CTL_ELEM_IFACE_LAST       SNDRV_CTL_ELEM_IFACE_SEQUENCER
 734
 735 #define SNDRV_CTL_ELEM_ACCESS_READ              (1<<0)
 736 #define SNDRV_CTL_ELEM_ACCESS_WRITE             (1<<1)
 737 #define SNDRV_CTL_ELEM_ACCESS_READWRITE         (SNDRV_CTL_ELEM_ACCESS_READ|SNDRV_CTL_ELEM_ACCESS_WRITE)
 738 #define SNDRV_CTL_ELEM_ACCESS_VOLATILE          (1<<2)  /* control value may be changed without a notification */
 739 #define SNDRV_CTL_ELEM_ACCESS_TIMESTAMP         (1<<3)  /* when was control changed */
 740 #define SNDRV_CTL_ELEM_ACCESS_TLV_READ          (1<<4)  /* TLV read is possible */
 741 #define SNDRV_CTL_ELEM_ACCESS_TLV_WRITE         (1<<5)  /* TLV write is possible */
 742 #define SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE     (SNDRV_CTL_ELEM_ACCESS_TLV_READ|SNDRV_CTL_ELEM_ACCESS_TLV_WRITE)
 743 #define SNDRV_CTL_ELEM_ACCESS_TLV_COMMAND       (1<<6)  /* TLV command is possible */
 744 #define SNDRV_CTL_ELEM_ACCESS_INACTIVE          (1<<8)  /* control does actually nothing, but may be updated */
 745 #define SNDRV_CTL_ELEM_ACCESS_LOCK              (1<<9)  /* write lock */
 746 #define SNDRV_CTL_ELEM_ACCESS_OWNER             (1<<10) /* write lock owner */
 747 #define SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK      (1<<28) /* kernel use a TLV callback */
 748 #define SNDRV_CTL_ELEM_ACCESS_USER              (1<<29) /* user space element */
 749 /* bits 30 and 31 are obsoleted (for indirect access) */
 750
 751 /* for further details see the ACPI and PCI power management specification */
 752 #define SNDRV_CTL_POWER_D0              0x0000  /* full On */
 753 #define SNDRV_CTL_POWER_D1              0x0100  /* partial On */
 754 #define SNDRV_CTL_POWER_D2              0x0200  /* partial On */
 755 #define SNDRV_CTL_POWER_D3              0x0300  /* Off */
 756 #define SNDRV_CTL_POWER_D3hot           (SNDRV_CTL_POWER_D3|0x0000)     /* Off, with power */
 757 #define SNDRV_CTL_POWER_D3cold          (SNDRV_CTL_POWER_D3|0x0001)     /* Off, without power */
 758
 759 struct snd_ctl_elem_id {
 760         unsigned int numid;             /* numeric identifier, zero = invalid */
 761         snd_ctl_elem_iface_t iface;     /* interface identifier */
 762         unsigned int device;            /* device/client number */
 763         unsigned int subdevice;         /* subdevice (substream) number */
 764         unsigned char name[44];         /* ASCII name of item */
 765         unsigned int index;             /* index of item */
 766 };
 767
 768 struct snd_ctl_elem_list {
 769         unsigned int offset;            /* W: first element ID to get */
 770         unsigned int space;             /* W: count of element IDs to get */
 771         unsigned int used;              /* R: count of element IDs set */
 772         unsigned int count;             /* R: count of all elements */
 773         struct snd_ctl_elem_id __user *pids; /* R: IDs */
 774         unsigned char reserved[50];
 775 };
 776
 777 struct snd_ctl_elem_info {
 778         struct snd_ctl_elem_id id;      /* W: element ID */
 779         snd_ctl_elem_type_t type;       /* R: value type - SNDRV_CTL_ELEM_TYPE_* */
 780         unsigned int access;            /* R: value access (bitmask) - SNDRV_CTL_ELEM_ACCESS_* */
 781         unsigned int count;             /* count of values */
 782         __kernel_pid_t owner;           /* owner's PID of this control */
 783         union {
 784                 struct {
 785                         long min;               /* R: minimum value */
 786                         long max;               /* R: maximum value */
 787                         long step;              /* R: step (0 variable) */
 788                 } integer;
 789                 struct {
 790                         long long min;          /* R: minimum value */
 791                         long long max;          /* R: maximum value */
 792                         long long step;         /* R: step (0 variable) */
 793                 } integer64;
 794                 struct {
 795                         unsigned int items;     /* R: number of items */
 796                         unsigned int item;      /* W: item number */
 797                         char name[64];          /* R: value name */
 798                 } enumerated;
 799                 unsigned char reserved[128];
 800         } value;
 801         union {
 802                 unsigned short d[4];            /* dimensions */
 803                 unsigned short *d_ptr;          /* indirect - obsoleted */
 804         } dimen;
 805         unsigned char reserved[64-4*sizeof(unsigned short)];
 806 };
 807
 808 struct snd_ctl_elem_value {
 809         struct snd_ctl_elem_id id;      /* W: element ID */
 810         unsigned int indirect: 1;       /* W: indirect access - obsoleted */
 811         union {
 812                 union {
 813                         long value[128];
 814                         long *value_ptr;        /* obsoleted */
 815                 } integer;
 816                 union {
 817                         long long value[64];
 818                         long long *value_ptr;   /* obsoleted */
 819                 } integer64;
 820                 union {
 821                         unsigned int item[128];
 822                         unsigned int *item_ptr; /* obsoleted */
 823                 } enumerated;
 824                 union {
 825                         unsigned char data[512];
 826                         unsigned char *data_ptr;        /* obsoleted */
 827                 } bytes;
 828                 struct snd_aes_iec958 iec958;
 829         } value;                /* RO */
 830         struct timespec tstamp;
 831         unsigned char reserved[128-sizeof(struct timespec)];
 832 };
 833
 834 struct snd_ctl_tlv {
 835         unsigned int numid;     /* control element numeric identification */
 836         unsigned int length;    /* in bytes aligned to 4 */
 837         unsigned int tlv[0];    /* first TLV */
 838 };
 839
 840 #define SNDRV_CTL_IOCTL_PVERSION        _IOR('U', 0x00, int)
 841 #define SNDRV_CTL_IOCTL_CARD_INFO       _IOR('U', 0x01, struct snd_ctl_card_info)
 842 #define SNDRV_CTL_IOCTL_ELEM_LIST       _IOWR('U', 0x10, struct snd_ctl_elem_list)
 843 #define SNDRV_CTL_IOCTL_ELEM_INFO       _IOWR('U', 0x11, struct snd_ctl_elem_info)
 844 #define SNDRV_CTL_IOCTL_ELEM_READ       _IOWR('U', 0x12, struct snd_ctl_elem_value)
 845 #define SNDRV_CTL_IOCTL_ELEM_WRITE      _IOWR('U', 0x13, struct snd_ctl_elem_value)
 846 #define SNDRV_CTL_IOCTL_ELEM_LOCK       _IOW('U', 0x14, struct snd_ctl_elem_id)
 847 #define SNDRV_CTL_IOCTL_ELEM_UNLOCK     _IOW('U', 0x15, struct snd_ctl_elem_id)
 848 #define SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS _IOWR('U', 0x16, int)
 849 #define SNDRV_CTL_IOCTL_ELEM_ADD        _IOWR('U', 0x17, struct snd_ctl_elem_info)
 850 #define SNDRV_CTL_IOCTL_ELEM_REPLACE    _IOWR('U', 0x18, struct snd_ctl_elem_info)
 851 #define SNDRV_CTL_IOCTL_ELEM_REMOVE     _IOWR('U', 0x19, struct snd_ctl_elem_id)
 852 #define SNDRV_CTL_IOCTL_TLV_READ        _IOWR('U', 0x1a, struct snd_ctl_tlv)
 853 #define SNDRV_CTL_IOCTL_TLV_WRITE       _IOWR('U', 0x1b, struct snd_ctl_tlv)
 854 #define SNDRV_CTL_IOCTL_TLV_COMMAND     _IOWR('U', 0x1c, struct snd_ctl_tlv)
 855 #define SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE _IOWR('U', 0x20, int)
 856 #define SNDRV_CTL_IOCTL_HWDEP_INFO      _IOR('U', 0x21, struct snd_hwdep_info)
 857 #define SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE _IOR('U', 0x30, int)
 858 #define SNDRV_CTL_IOCTL_PCM_INFO        _IOWR('U', 0x31, struct snd_pcm_info)
 859 #define SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE _IOW('U', 0x32, int)
 860 #define SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE _IOWR('U', 0x40, int)
 861 #define SNDRV_CTL_IOCTL_RAWMIDI_INFO    _IOWR('U', 0x41, struct snd_rawmidi_info)
 862 #define SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE _IOW('U', 0x42, int)
 863 #define SNDRV_CTL_IOCTL_POWER           _IOWR('U', 0xd0, int)
 864 #define SNDRV_CTL_IOCTL_POWER_STATE     _IOR('U', 0xd1, int)
 865
 866 /*
 867  *  Read interface.
 868  */
 869
 870 enum sndrv_ctl_event_type {
 871         SNDRV_CTL_EVENT_ELEM = 0,
 872         SNDRV_CTL_EVENT_LAST = SNDRV_CTL_EVENT_ELEM,
 873 };
 874
 875 #define SNDRV_CTL_EVENT_MASK_VALUE      (1<<0)  /* element value was changed */
 876 #define SNDRV_CTL_EVENT_MASK_INFO       (1<<1)  /* element info was changed */
 877 #define SNDRV_CTL_EVENT_MASK_ADD        (1<<2)  /* element was added */
 878 #define SNDRV_CTL_EVENT_MASK_TLV        (1<<3)  /* element TLV tree was changed */
 879 #define SNDRV_CTL_EVENT_MASK_REMOVE     (~0U)   /* element was removed */
 880
 881 struct snd_ctl_event {
 882         int type;       /* event type - SNDRV_CTL_EVENT_* */
 883         union {
 884                 struct {
 885                         unsigned int mask;
 886                         struct snd_ctl_elem_id id;
 887                 } elem;
 888                 unsigned char data8[60];
 889         } data;
 890 };
 891
 892 /*
 893  *  Control names
 894  */
 895
 896 #define SNDRV_CTL_NAME_NONE                             ""
 897 #define SNDRV_CTL_NAME_PLAYBACK                         "Playback "
 898 #define SNDRV_CTL_NAME_CAPTURE                          "Capture "
 899
 900 #define SNDRV_CTL_NAME_IEC958_NONE                      ""
 901 #define SNDRV_CTL_NAME_IEC958_SWITCH                    "Switch"
 902 #define SNDRV_CTL_NAME_IEC958_VOLUME                    "Volume"
 903 #define SNDRV_CTL_NAME_IEC958_DEFAULT                   "Default"
 904 #define SNDRV_CTL_NAME_IEC958_MASK                      "Mask"
 905 #define SNDRV_CTL_NAME_IEC958_CON_MASK                  "Con Mask"
 906 #define SNDRV_CTL_NAME_IEC958_PRO_MASK                  "Pro Mask"
 907 #define SNDRV_CTL_NAME_IEC958_PCM_STREAM                "PCM Stream"
 908 #define SNDRV_CTL_NAME_IEC958(expl,direction,what)      "IEC958 " expl SNDRV_CTL_NAME_##direction SNDRV_CTL_NAME_IEC958_##what
 909
 910 #endif /* __SOUND_ASOUND_H */