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