include/sound/asound.h

   1 /*
   2  *  Advanced Linux Sound Architecture - ALSA - Driver
   3  *  Copyright (c) 1994-2003 by Jaroslav Kysela <perex@suse.cz>,
   4  *                             Abramo Bagnara <abramo@alsa-project.org>
   5  *
   6  *
   7  *   This program is free software; you can redistribute it and/or modify
   8  *   it under the terms of the GNU General Public License as published by
   9  *   the Free Software Foundation; either version 2 of the License, or
  10  *   (at your option) any later version.
  11  *
  12  *   This program is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *   GNU General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU General Public License
  18  *   along with this program; if not, write to the Free Software
  19  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  20  *
  21  */
  22
  23 #ifndef __SOUND_ASOUND_H
  24 #define __SOUND_ASOUND_H
  25
  26 #ifdef __KERNEL__
  27 #include <linux/ioctl.h>
  28 #include <linux/types.h>
  29 #include <linux/time.h>
  30 #include <asm/byteorder.h>
  31
  32 #ifdef  __LITTLE_ENDIAN
  33 #define SNDRV_LITTLE_ENDIAN
  34 #else
  35 #ifdef __BIG_ENDIAN
  36 #define SNDRV_BIG_ENDIAN
  37 #else
  38 #error "Unsupported endian..."
  39 #endif
  40 #endif
  41
  42 #endif /* __KERNEL__ **/
  43
  44 /*
  45  *  protocol version
  46  */
  47
  48 #define SNDRV_PROTOCOL_VERSION(major, minor, subminor) (((major)<<16)|((minor)<<8)|(subminor))
  49 #define SNDRV_PROTOCOL_MAJOR(version) (((version)>>16)&0xffff)
  50 #define SNDRV_PROTOCOL_MINOR(version) (((version)>>8)&0xff)
  51 #define SNDRV_PROTOCOL_MICRO(version) ((version)&0xff)
  52 #define SNDRV_PROTOCOL_INCOMPATIBLE(kversion, uversion) \
  53         (SNDRV_PROTOCOL_MAJOR(kversion) != SNDRV_PROTOCOL_MAJOR(uversion) || \
  54          (SNDRV_PROTOCOL_MAJOR(kversion) == SNDRV_PROTOCOL_MAJOR(uversion) && \
  55            SNDRV_PROTOCOL_MINOR(kversion) != SNDRV_PROTOCOL_MINOR(uversion)))
  56
  57 /****************************************************************************
  58  *                                                                          *
  59  *        Digital audio interface                                           *
  60  *                                                                          *
  61  ****************************************************************************/
  62
  63 struct snd_aes_iec958 {
  64         unsigned char status[24];       /* AES/IEC958 channel status bits */
  65         unsigned char subcode[147];     /* AES/IEC958 subcode bits */
  66         unsigned char pad;              /* nothing */
  67         unsigned char dig_subframe[4];  /* AES/IEC958 subframe bits */
  68 };
  69
  70 /****************************************************************************
  71  *                                                                          *
  72  *      Section for driver hardware dependent interface - /dev/snd/hw?      *
  73  *                                                                          *
  74  ****************************************************************************/
  75
  76 #define SNDRV_HWDEP_VERSION             SNDRV_PROTOCOL_VERSION(1, 0, 1)
  77
  78 enum {
  79         SNDRV_HWDEP_IFACE_OPL2 = 0,
  80         SNDRV_HWDEP_IFACE_OPL3,
  81         SNDRV_HWDEP_IFACE_OPL4,
  82         SNDRV_HWDEP_IFACE_SB16CSP,      /* Creative Signal Processor */
  83         SNDRV_HWDEP_IFACE_EMU10K1,      /* FX8010 processor in EMU10K1 chip */
  84         SNDRV_HWDEP_IFACE_YSS225,       /* Yamaha FX processor */
  85         SNDRV_HWDEP_IFACE_ICS2115,      /* Wavetable synth */
  86         SNDRV_HWDEP_IFACE_SSCAPE,       /* Ensoniq SoundScape ISA card (MC68EC000) */
  87         SNDRV_HWDEP_IFACE_VX,           /* Digigram VX cards */
  88         SNDRV_HWDEP_IFACE_MIXART,       /* Digigram miXart cards */
  89         SNDRV_HWDEP_IFACE_USX2Y,        /* Tascam US122, US224 & US428 usb */
  90         SNDRV_HWDEP_IFACE_EMUX_WAVETABLE, /* EmuX wavetable */
  91         SNDRV_HWDEP_IFACE_BLUETOOTH,    /* Bluetooth audio */
  92         SNDRV_HWDEP_IFACE_USX2Y_PCM,    /* Tascam US122, US224 & US428 rawusb pcm */
  93         SNDRV_HWDEP_IFACE_PCXHR,        /* Digigram PCXHR */
  94         SNDRV_HWDEP_IFACE_SB_RC,        /* SB Extigy/Audigy2NX remote control */
  95
  96         /* Don't forget to change the following: */
  97         SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_SB_RC
  98 };
  99
 100 struct snd_hwdep_info {
 101         unsigned int device;            /* WR: device number */
 102         int card;                       /* R: card number */
 103         unsigned char id[64];           /* ID (user selectable) */
 104         unsigned char name[80];         /* hwdep name */
 105         int iface;                      /* hwdep interface */
 106         unsigned char reserved[64];     /* reserved for future */
 107 };
 108
 109 /* generic DSP loader */
 110 struct snd_hwdep_dsp_status {
 111         unsigned int version;           /* R: driver-specific version */
 112         unsigned char id[32];           /* R: driver-specific ID string */
 113         unsigned int num_dsps;          /* R: number of DSP images to transfer */
 114         unsigned int dsp_loaded;        /* R: bit flags indicating the loaded DSPs */
 115         unsigned int chip_ready;        /* R: 1 = initialization finished */
 116         unsigned char reserved[16];     /* reserved for future use */
 117 };
 118
 119 struct snd_hwdep_dsp_image {
 120         unsigned int index;             /* W: DSP index */
 121         unsigned char name[64];         /* W: ID (e.g. file name) */
 122         unsigned char __user *image;    /* W: binary image */
 123         size_t length;                  /* W: size of image in bytes */
 124         unsigned long driver_data;      /* W: driver-specific data */
 125 };
 126
 127 enum {
 128         SNDRV_HWDEP_IOCTL_PVERSION = _IOR ('H', 0x00, int),
 129         SNDRV_HWDEP_IOCTL_INFO = _IOR ('H', 0x01, struct snd_hwdep_info),
 130         SNDRV_HWDEP_IOCTL_DSP_STATUS = _IOR('H', 0x02, struct snd_hwdep_dsp_status),
 131         SNDRV_HWDEP_IOCTL_DSP_LOAD   = _IOW('H', 0x03, struct snd_hwdep_dsp_image)
 132 };
 133
 134 /*****************************************************************************
 135  *                                                                           *
 136  *             Digital Audio (PCM) interface - /dev/snd/pcm??                *
 137  *                                                                           *
 138  *****************************************************************************/
 139
 140 #define SNDRV_PCM_VERSION               SNDRV_PROTOCOL_VERSION(2, 0, 8)
 141
 142 typedef unsigned long snd_pcm_uframes_t;
 143 typedef signed long snd_pcm_sframes_t;
 144
 145 enum {
 146         SNDRV_PCM_CLASS_GENERIC = 0,    /* standard mono or stereo device */
 147         SNDRV_PCM_CLASS_MULTI,          /* multichannel device */
 148         SNDRV_PCM_CLASS_MODEM,          /* software modem class */
 149         SNDRV_PCM_CLASS_DIGITIZER,      /* digitizer class */
 150         /* Don't forget to change the following: */
 151         SNDRV_PCM_CLASS_LAST = SNDRV_PCM_CLASS_DIGITIZER,
 152 };
 153
 154 enum {
 155         SNDRV_PCM_SUBCLASS_GENERIC_MIX = 0, /* mono or stereo subdevices are mixed together */
 156         SNDRV_PCM_SUBCLASS_MULTI_MIX,   /* multichannel subdevices are mixed together */
 157         /* Don't forget to change the following: */
 158         SNDRV_PCM_SUBCLASS_LAST = SNDRV_PCM_SUBCLASS_MULTI_MIX,
 159 };
 160
 161 enum {
 162         SNDRV_PCM_STREAM_PLAYBACK = 0,
 163         SNDRV_PCM_STREAM_CAPTURE,
 164         SNDRV_PCM_STREAM_LAST = SNDRV_PCM_STREAM_CAPTURE,
 165 };
 166
 167 typedef int __bitwise snd_pcm_access_t;
 168 #define SNDRV_PCM_ACCESS_MMAP_INTERLEAVED       ((__force snd_pcm_access_t) 0) /* interleaved mmap */
 169 #define SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED    ((__force snd_pcm_access_t) 1) /* noninterleaved mmap */
 170 #define SNDRV_PCM_ACCESS_MMAP_COMPLEX           ((__force snd_pcm_access_t) 2) /* complex mmap */
 171 #define SNDRV_PCM_ACCESS_RW_INTERLEAVED         ((__force snd_pcm_access_t) 3) /* readi/writei */
 172 #define SNDRV_PCM_ACCESS_RW_NONINTERLEAVED      ((__force snd_pcm_access_t) 4) /* readn/writen */
 173 #define SNDRV_PCM_ACCESS_LAST           SNDRV_PCM_ACCESS_RW_NONINTERLEAVED
 174
 175 typedef int __bitwise snd_pcm_format_t;
 176 #define SNDRV_PCM_FORMAT_S8     ((__force snd_pcm_format_t) 0)
 177 #define SNDRV_PCM_FORMAT_U8     ((__force snd_pcm_format_t) 1)
 178 #define SNDRV_PCM_FORMAT_S16_LE ((__force snd_pcm_format_t) 2)
 179 #define SNDRV_PCM_FORMAT_S16_BE ((__force snd_pcm_format_t) 3)
 180 #define SNDRV_PCM_FORMAT_U16_LE ((__force snd_pcm_format_t) 4)
 181 #define SNDRV_PCM_FORMAT_U16_BE ((__force snd_pcm_format_t) 5)
 182 #define SNDRV_PCM_FORMAT_S24_LE ((__force snd_pcm_format_t) 6) /* low three bytes */
 183 #define SNDRV_PCM_FORMAT_S24_BE ((__force snd_pcm_format_t) 7) /* low three bytes */
 184 #define SNDRV_PCM_FORMAT_U24_LE ((__force snd_pcm_format_t) 8) /* low three bytes */
 185 #define SNDRV_PCM_FORMAT_U24_BE ((__force snd_pcm_format_t) 9) /* low three bytes */
 186 #define SNDRV_PCM_FORMAT_S32_LE ((__force snd_pcm_format_t) 10)
 187 #define SNDRV_PCM_FORMAT_S32_BE ((__force snd_pcm_format_t) 11)
 188 #define SNDRV_PCM_FORMAT_U32_LE ((__force snd_pcm_format_t) 12)
 189 #define SNDRV_PCM_FORMAT_U32_BE ((__force snd_pcm_format_t) 13)
 190 #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 */
 191 #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 */
 192 #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 */
 193 #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 */
 194 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE ((__force snd_pcm_format_t) 18) /* IEC-958 subframe, Little Endian */
 195 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE ((__force snd_pcm_format_t) 19) /* IEC-958 subframe, Big Endian */
 196 #define SNDRV_PCM_FORMAT_MU_LAW         ((__force snd_pcm_format_t) 20)
 197 #define SNDRV_PCM_FORMAT_A_LAW          ((__force snd_pcm_format_t) 21)
 198 #define SNDRV_PCM_FORMAT_IMA_ADPCM      ((__force snd_pcm_format_t) 22)
 199 #define SNDRV_PCM_FORMAT_MPEG           ((__force snd_pcm_format_t) 23)
 200 #define SNDRV_PCM_FORMAT_GSM            ((__force snd_pcm_format_t) 24)
 201 #define SNDRV_PCM_FORMAT_SPECIAL        ((__force snd_pcm_format_t) 31)
 202 #define SNDRV_PCM_FORMAT_S24_3LE        ((__force snd_pcm_format_t) 32) /* in three bytes */
 203 #define SNDRV_PCM_FORMAT_S24_3BE        ((__force snd_pcm_format_t) 33) /* in three bytes */
 204 #define SNDRV_PCM_FORMAT_U24_3LE        ((__force snd_pcm_format_t) 34) /* in three bytes */
 205 #define SNDRV_PCM_FORMAT_U24_3BE        ((__force snd_pcm_format_t) 35) /* in three bytes */
 206 #define SNDRV_PCM_FORMAT_S20_3LE        ((__force snd_pcm_format_t) 36) /* in three bytes */
 207 #define SNDRV_PCM_FORMAT_S20_3BE        ((__force snd_pcm_format_t) 37) /* in three bytes */
 208 #define SNDRV_PCM_FORMAT_U20_3LE        ((__force snd_pcm_format_t) 38) /* in three bytes */
 209 #define SNDRV_PCM_FORMAT_U20_3BE        ((__force snd_pcm_format_t) 39) /* in three bytes */
 210 #define SNDRV_PCM_FORMAT_S18_3LE        ((__force snd_pcm_format_t) 40) /* in three bytes */
 211 #define SNDRV_PCM_FORMAT_S18_3BE        ((__force snd_pcm_format_t) 41) /* in three bytes */
 212 #define SNDRV_PCM_FORMAT_U18_3LE        ((__force snd_pcm_format_t) 42) /* in three bytes */
 213 #define SNDRV_PCM_FORMAT_U18_3BE        ((__force snd_pcm_format_t) 43) /* in three bytes */
 214 #define SNDRV_PCM_FORMAT_LAST           SNDRV_PCM_FORMAT_U18_3BE
 215
 216 #ifdef SNDRV_LITTLE_ENDIAN
 217 #define SNDRV_PCM_FORMAT_S16            SNDRV_PCM_FORMAT_S16_LE
 218 #define SNDRV_PCM_FORMAT_U16            SNDRV_PCM_FORMAT_U16_LE
 219 #define SNDRV_PCM_FORMAT_S24            SNDRV_PCM_FORMAT_S24_LE
 220 #define SNDRV_PCM_FORMAT_U24            SNDRV_PCM_FORMAT_U24_LE
 221 #define SNDRV_PCM_FORMAT_S32            SNDRV_PCM_FORMAT_S32_LE
 222 #define SNDRV_PCM_FORMAT_U32            SNDRV_PCM_FORMAT_U32_LE
 223 #define SNDRV_PCM_FORMAT_FLOAT          SNDRV_PCM_FORMAT_FLOAT_LE
 224 #define SNDRV_PCM_FORMAT_FLOAT64        SNDRV_PCM_FORMAT_FLOAT64_LE
 225 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE
 226 #endif
 227 #ifdef SNDRV_BIG_ENDIAN
 228 #define SNDRV_PCM_FORMAT_S16            SNDRV_PCM_FORMAT_S16_BE
 229 #define SNDRV_PCM_FORMAT_U16            SNDRV_PCM_FORMAT_U16_BE
 230 #define SNDRV_PCM_FORMAT_S24            SNDRV_PCM_FORMAT_S24_BE
 231 #define SNDRV_PCM_FORMAT_U24            SNDRV_PCM_FORMAT_U24_BE
 232 #define SNDRV_PCM_FORMAT_S32            SNDRV_PCM_FORMAT_S32_BE
 233 #define SNDRV_PCM_FORMAT_U32            SNDRV_PCM_FORMAT_U32_BE
 234 #define SNDRV_PCM_FORMAT_FLOAT          SNDRV_PCM_FORMAT_FLOAT_BE
 235 #define SNDRV_PCM_FORMAT_FLOAT64        SNDRV_PCM_FORMAT_FLOAT64_BE
 236 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE
 237 #endif
 238
 239 typedef int __bitwise snd_pcm_subformat_t;
 240 #define SNDRV_PCM_SUBFORMAT_STD         ((__force snd_pcm_subformat_t) 0)
 241 #define SNDRV_PCM_SUBFORMAT_LAST        SNDRV_PCM_SUBFORMAT_STD
 242
 243 #define SNDRV_PCM_INFO_MMAP             0x00000001      /* hardware supports mmap */
 244 #define SNDRV_PCM_INFO_MMAP_VALID       0x00000002      /* period data are valid during transfer */
 245 #define SNDRV_PCM_INFO_DOUBLE           0x00000004      /* Double buffering needed for PCM start/stop */
 246 #define SNDRV_PCM_INFO_BATCH            0x00000010      /* double buffering */
 247 #define SNDRV_PCM_INFO_INTERLEAVED      0x00000100      /* channels are interleaved */
 248 #define SNDRV_PCM_INFO_NONINTERLEAVED   0x00000200      /* channels are not interleaved */
 249 #define SNDRV_PCM_INFO_COMPLEX          0x00000400      /* complex frame organization (mmap only) */
 250 #define SNDRV_PCM_INFO_BLOCK_TRANSFER   0x00010000      /* hardware transfer block of samples */
 251 #define SNDRV_PCM_INFO_OVERRANGE        0x00020000      /* hardware supports ADC (capture) overrange detection */
 252 #define SNDRV_PCM_INFO_RESUME           0x00040000      /* hardware supports stream resume after suspend */
 253 #define SNDRV_PCM_INFO_PAUSE            0x00080000      /* pause ioctl is supported */
 254 #define SNDRV_PCM_INFO_HALF_DUPLEX      0x00100000      /* only half duplex */
 255 #define SNDRV_PCM_INFO_JOINT_DUPLEX     0x00200000      /* playback and capture stream are somewhat correlated */
 256 #define SNDRV_PCM_INFO_SYNC_START       0x00400000      /* pcm support some kind of sync go */
 257
 258 typedef int __bitwise snd_pcm_state_t;
 259 #define SNDRV_PCM_STATE_OPEN            ((__force snd_pcm_state_t) 0) /* stream is open */
 260 #define SNDRV_PCM_STATE_SETUP           ((__force snd_pcm_state_t) 1) /* stream has a setup */
 261 #define SNDRV_PCM_STATE_PREPARED        ((__force snd_pcm_state_t) 2) /* stream is ready to start */
 262 #define SNDRV_PCM_STATE_RUNNING         ((__force snd_pcm_state_t) 3) /* stream is running */
 263 #define SNDRV_PCM_STATE_XRUN            ((__force snd_pcm_state_t) 4) /* stream reached an xrun */
 264 #define SNDRV_PCM_STATE_DRAINING        ((__force snd_pcm_state_t) 5) /* stream is draining */
 265 #define SNDRV_PCM_STATE_PAUSED          ((__force snd_pcm_state_t) 6) /* stream is paused */
 266 #define SNDRV_PCM_STATE_SUSPENDED       ((__force snd_pcm_state_t) 7) /* hardware is suspended */
 267 #define SNDRV_PCM_STATE_DISCONNECTED    ((__force snd_pcm_state_t) 8) /* hardware is disconnected */
 268 #define SNDRV_PCM_STATE_LAST            SNDRV_PCM_STATE_DISCONNECTED
 269
 270 enum {
 271         SNDRV_PCM_MMAP_OFFSET_DATA = 0x00000000,
 272         SNDRV_PCM_MMAP_OFFSET_STATUS = 0x80000000,
 273         SNDRV_PCM_MMAP_OFFSET_CONTROL = 0x81000000,
 274 };
 275
 276 union snd_pcm_sync_id {
 277         unsigned char id[16];
 278         unsigned short id16[8];
 279         unsigned int id32[4];
 280 };
 281
 282 struct snd_pcm_info {
 283         unsigned int device;            /* RO/WR (control): device number */
 284         unsigned int subdevice;         /* RO/WR (control): subdevice number */
 285         int stream;                     /* RO/WR (control): stream direction */
 286         int card;                       /* R: card number */
 287         unsigned char id[64];           /* ID (user selectable) */
 288         unsigned char name[80];         /* name of this device */
 289         unsigned char subname[32];      /* subdevice name */
 290         int dev_class;                  /* SNDRV_PCM_CLASS_* */
 291         int dev_subclass;               /* SNDRV_PCM_SUBCLASS_* */
 292         unsigned int subdevices_count;
 293         unsigned int subdevices_avail;
 294         union snd_pcm_sync_id sync;     /* hardware synchronization ID */
 295         unsigned char reserved[64];     /* reserved for future... */
 296 };
 297
 298 typedef int __bitwise snd_pcm_hw_param_t;
 299 #define SNDRV_PCM_HW_PARAM_ACCESS       ((__force snd_pcm_hw_param_t) 0) /* Access type */
 300 #define SNDRV_PCM_HW_PARAM_FORMAT       ((__force snd_pcm_hw_param_t) 1) /* Format */
 301 #define SNDRV_PCM_HW_PARAM_SUBFORMAT    ((__force snd_pcm_hw_param_t) 2) /* Subformat */
 302 #define SNDRV_PCM_HW_PARAM_FIRST_MASK   SNDRV_PCM_HW_PARAM_ACCESS
 303 #define SNDRV_PCM_HW_PARAM_LAST_MASK    SNDRV_PCM_HW_PARAM_SUBFORMAT
 304
 305 #define SNDRV_PCM_HW_PARAM_SAMPLE_BITS  ((__force snd_pcm_hw_param_t) 8) /* Bits per sample */
 306 #define SNDRV_PCM_HW_PARAM_FRAME_BITS   ((__force snd_pcm_hw_param_t) 9) /* Bits per frame */
 307 #define SNDRV_PCM_HW_PARAM_CHANNELS     ((__force snd_pcm_hw_param_t) 10) /* Channels */
 308 #define SNDRV_PCM_HW_PARAM_RATE         ((__force snd_pcm_hw_param_t) 11) /* Approx rate */
 309 #define SNDRV_PCM_HW_PARAM_PERIOD_TIME  ((__force snd_pcm_hw_param_t) 12) /* Approx distance between interrupts in us */
 310 #define SNDRV_PCM_HW_PARAM_PERIOD_SIZE  ((__force snd_pcm_hw_param_t) 13) /* Approx frames between interrupts */
 311 #define SNDRV_PCM_HW_PARAM_PERIOD_BYTES ((__force snd_pcm_hw_param_t) 14) /* Approx bytes between interrupts */
 312 #define SNDRV_PCM_HW_PARAM_PERIODS      ((__force snd_pcm_hw_param_t) 15) /* Approx interrupts per buffer */
 313 #define SNDRV_PCM_HW_PARAM_BUFFER_TIME  ((__force snd_pcm_hw_param_t) 16) /* Approx duration of buffer in us */
 314 #define SNDRV_PCM_HW_PARAM_BUFFER_SIZE  ((__force snd_pcm_hw_param_t) 17) /* Size of buffer in frames */
 315 #define SNDRV_PCM_HW_PARAM_BUFFER_BYTES ((__force snd_pcm_hw_param_t) 18) /* Size of buffer in bytes */
 316 #define SNDRV_PCM_HW_PARAM_TICK_TIME    ((__force snd_pcm_hw_param_t) 19) /* Approx tick duration in us */
 317 #define SNDRV_PCM_HW_PARAM_FIRST_INTERVAL       SNDRV_PCM_HW_PARAM_SAMPLE_BITS
 318 #define SNDRV_PCM_HW_PARAM_LAST_INTERVAL        SNDRV_PCM_HW_PARAM_TICK_TIME
 319
 320 #define SNDRV_PCM_HW_PARAMS_NORESAMPLE          (1<<0)  /* avoid rate resampling */
 321
 322 struct snd_interval {
 323         unsigned int min, max;
 324         unsigned int openmin:1,
 325                      openmax:1,
 326                      integer:1,
 327                      empty:1;
 328 };
 329
 330 #define SNDRV_MASK_MAX  256
 331
 332 struct snd_mask {
 333         u_int32_t bits[(SNDRV_MASK_MAX+31)/32];
 334 };
 335
 336 struct snd_pcm_hw_params {
 337         unsigned int flags;
 338         struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK -
 339                                SNDRV_PCM_HW_PARAM_FIRST_MASK + 1];
 340         struct snd_mask mres[5];        /* reserved masks */
 341         struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL -
 342                                         SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];
 343         struct snd_interval ires[9];    /* reserved intervals */
 344         unsigned int rmask;             /* W: requested masks */
 345         unsigned int cmask;             /* R: changed masks */
 346         unsigned int info;              /* R: Info flags for returned setup */
 347         unsigned int msbits;            /* R: used most significant bits */
 348         unsigned int rate_num;          /* R: rate numerator */
 349         unsigned int rate_den;          /* R: rate denominator */
 350         snd_pcm_uframes_t fifo_size;    /* R: chip FIFO size in frames */
 351         unsigned char reserved[64];     /* reserved for future */
 352 };
 353
 354 enum {
 355         SNDRV_PCM_TSTAMP_NONE = 0,
 356         SNDRV_PCM_TSTAMP_MMAP,
 357         SNDRV_PCM_TSTAMP_LAST = SNDRV_PCM_TSTAMP_MMAP,
 358 };
 359
 360 struct snd_pcm_sw_params {
 361         int tstamp_mode;                        /* timestamp mode */
 362         unsigned int period_step;
 363         unsigned int sleep_min;                 /* min ticks to sleep */
 364         snd_pcm_uframes_t avail_min;            /* min avail frames for wakeup */
 365         snd_pcm_uframes_t xfer_align;           /* xfer size need to be a multiple */
 366         snd_pcm_uframes_t start_threshold;      /* min hw_avail frames for automatic start */
 367         snd_pcm_uframes_t stop_threshold;       /* min avail frames for automatic stop */
 368         snd_pcm_uframes_t silence_threshold;    /* min distance from noise for silence filling */
 369         snd_pcm_uframes_t silence_size;         /* silence block size */
 370         snd_pcm_uframes_t boundary;             /* pointers wrap point */
 371         unsigned char reserved[64];             /* reserved for future */
 372 };
 373
 374 struct snd_pcm_channel_info {
 375         unsigned int channel;
 376         off_t offset;                   /* mmap offset */
 377         unsigned int first;             /* offset to first sample in bits */
 378         unsigned int step;              /* samples distance in bits */
 379 };
 380
 381 struct snd_pcm_status {
 382         snd_pcm_state_t state;          /* stream state */
 383         struct timespec trigger_tstamp; /* time when stream was started/stopped/paused */
 384         struct timespec tstamp;         /* reference timestamp */
 385         snd_pcm_uframes_t appl_ptr;     /* appl ptr */
 386         snd_pcm_uframes_t hw_ptr;       /* hw ptr */
 387         snd_pcm_sframes_t delay;        /* current delay in frames */
 388         snd_pcm_uframes_t avail;        /* number of frames available */
 389         snd_pcm_uframes_t avail_max;    /* max frames available on hw since last status */
 390         snd_pcm_uframes_t overrange;    /* count of ADC (capture) overrange detections from last status */
 391         snd_pcm_state_t suspended_state; /* suspended stream state */
 392         unsigned char reserved[60];     /* must be filled with zero */
 393 };
 394
 395 struct snd_pcm_mmap_status {
 396         snd_pcm_state_t state;          /* RO: state - SNDRV_PCM_STATE_XXXX */
 397         int pad1;                       /* Needed for 64 bit alignment */
 398         snd_pcm_uframes_t hw_ptr;       /* RO: hw ptr (0...boundary-1) */
 399         struct timespec tstamp;         /* Timestamp */
 400         snd_pcm_state_t suspended_state; /* RO: suspended stream state */
 401 };
 402
 403 struct snd_pcm_mmap_control {
 404         snd_pcm_uframes_t appl_ptr;     /* RW: appl ptr (0...boundary-1) */
 405         snd_pcm_uframes_t avail_min;    /* RW: min available frames for wakeup */
 406 };
 407
 408 #define SNDRV_PCM_SYNC_PTR_HWSYNC       (1<<0)  /* execute hwsync */
 409 #define SNDRV_PCM_SYNC_PTR_APPL         (1<<1)  /* get appl_ptr from driver (r/w op) */
 410 #define SNDRV_PCM_SYNC_PTR_AVAIL_MIN    (1<<2)  /* get avail_min from driver */
 411
 412 struct snd_pcm_sync_ptr {
 413         unsigned int flags;
 414         union {
 415                 struct snd_pcm_mmap_status status;
 416                 unsigned char reserved[64];
 417         } s;
 418         union {
 419                 struct snd_pcm_mmap_control control;
 420                 unsigned char reserved[64];
 421         } c;
 422 };
 423
 424 struct snd_xferi {
 425         snd_pcm_sframes_t result;
 426         void __user *buf;
 427         snd_pcm_uframes_t frames;
 428 };
 429
 430 struct snd_xfern {
 431         snd_pcm_sframes_t result;
 432         void __user * __user *bufs;
 433         snd_pcm_uframes_t frames;
 434 };
 435
 436 enum {
 437         SNDRV_PCM_IOCTL_PVERSION = _IOR('A', 0x00, int),
 438         SNDRV_PCM_IOCTL_INFO = _IOR('A', 0x01, struct snd_pcm_info),
 439         SNDRV_PCM_IOCTL_TSTAMP = _IOW('A', 0x02, int),
 440         SNDRV_PCM_IOCTL_HW_REFINE = _IOWR('A', 0x10, struct snd_pcm_hw_params),
 441         SNDRV_PCM_IOCTL_HW_PARAMS = _IOWR('A', 0x11, struct snd_pcm_hw_params),
 442         SNDRV_PCM_IOCTL_HW_FREE = _IO('A', 0x12),
 443         SNDRV_PCM_IOCTL_SW_PARAMS = _IOWR('A', 0x13, struct snd_pcm_sw_params),
 444         SNDRV_PCM_IOCTL_STATUS = _IOR('A', 0x20, struct snd_pcm_status),
 445         SNDRV_PCM_IOCTL_DELAY = _IOR('A', 0x21, snd_pcm_sframes_t),
 446         SNDRV_PCM_IOCTL_HWSYNC = _IO('A', 0x22),
 447         SNDRV_PCM_IOCTL_SYNC_PTR = _IOWR('A', 0x23, struct snd_pcm_sync_ptr),
 448         SNDRV_PCM_IOCTL_CHANNEL_INFO = _IOR('A', 0x32, struct snd_pcm_channel_info),
 449         SNDRV_PCM_IOCTL_PREPARE = _IO('A', 0x40),
 450         SNDRV_PCM_IOCTL_RESET = _IO('A', 0x41),
 451         SNDRV_PCM_IOCTL_START = _IO('A', 0x42),
 452         SNDRV_PCM_IOCTL_DROP = _IO('A', 0x43),
 453         SNDRV_PCM_IOCTL_DRAIN = _IO('A', 0x44),
 454         SNDRV_PCM_IOCTL_PAUSE = _IOW('A', 0x45, int),
 455         SNDRV_PCM_IOCTL_REWIND = _IOW('A', 0x46, snd_pcm_uframes_t),
 456         SNDRV_PCM_IOCTL_RESUME = _IO('A', 0x47),
 457         SNDRV_PCM_IOCTL_XRUN = _IO('A', 0x48),
 458         SNDRV_PCM_IOCTL_FORWARD = _IOW('A', 0x49, snd_pcm_uframes_t),
 459         SNDRV_PCM_IOCTL_WRITEI_FRAMES = _IOW('A', 0x50, struct snd_xferi),
 460         SNDRV_PCM_IOCTL_READI_FRAMES = _IOR('A', 0x51, struct snd_xferi),
 461         SNDRV_PCM_IOCTL_WRITEN_FRAMES = _IOW('A', 0x52, struct snd_xfern),
 462         SNDRV_PCM_IOCTL_READN_FRAMES = _IOR('A', 0x53, struct snd_xfern),
 463         SNDRV_PCM_IOCTL_LINK = _IOW('A', 0x60, int),
 464         SNDRV_PCM_IOCTL_UNLINK = _IO('A', 0x61),
 465 };
 466
 467 /* Trick to make alsa-lib/acinclude.m4 happy */
 468 #define SNDRV_PCM_IOCTL_REWIND SNDRV_PCM_IOCTL_REWIND
 469
 470 /*****************************************************************************
 471  *                                                                           *
 472  *                            MIDI v1.0 interface                            *
 473  *                                                                           *
 474  *****************************************************************************/
 475
 476 /*
 477  *  Raw MIDI section - /dev/snd/midi??
 478  */
 479
 480 #define SNDRV_RAWMIDI_VERSION           SNDRV_PROTOCOL_VERSION(2, 0, 0)
 481
 482 enum {
 483         SNDRV_RAWMIDI_STREAM_OUTPUT = 0,
 484         SNDRV_RAWMIDI_STREAM_INPUT,
 485         SNDRV_RAWMIDI_STREAM_LAST = SNDRV_RAWMIDI_STREAM_INPUT,
 486 };
 487
 488 #define SNDRV_RAWMIDI_INFO_OUTPUT               0x00000001
 489 #define SNDRV_RAWMIDI_INFO_INPUT                0x00000002
 490 #define SNDRV_RAWMIDI_INFO_DUPLEX               0x00000004
 491
 492 struct snd_rawmidi_info {
 493         unsigned int device;            /* RO/WR (control): device number */
 494         unsigned int subdevice;         /* RO/WR (control): subdevice number */
 495         int stream;                     /* WR: stream */
 496         int card;                       /* R: card number */
 497         unsigned int flags;             /* SNDRV_RAWMIDI_INFO_XXXX */
 498         unsigned char id[64];           /* ID (user selectable) */
 499         unsigned char name[80];         /* name of device */
 500         unsigned char subname[32];      /* name of active or selected subdevice */
 501         unsigned int subdevices_count;
 502         unsigned int subdevices_avail;
 503         unsigned char reserved[64];     /* reserved for future use */
 504 };
 505
 506 struct snd_rawmidi_params {
 507         int stream;
 508         size_t buffer_size;             /* queue size in bytes */
 509         size_t avail_min;               /* minimum avail bytes for wakeup */
 510         unsigned int no_active_sensing: 1; /* do not send active sensing byte in close() */
 511         unsigned char reserved[16];     /* reserved for future use */
 512 };
 513
 514 struct snd_rawmidi_status {
 515         int stream;
 516         struct timespec tstamp;         /* Timestamp */
 517         size_t avail;                   /* available bytes */
 518         size_t xruns;                   /* count of overruns since last status (in bytes) */
 519         unsigned char reserved[16];     /* reserved for future use */
 520 };
 521
 522 enum {
 523         SNDRV_RAWMIDI_IOCTL_PVERSION = _IOR('W', 0x00, int),
 524         SNDRV_RAWMIDI_IOCTL_INFO = _IOR('W', 0x01, struct snd_rawmidi_info),
 525         SNDRV_RAWMIDI_IOCTL_PARAMS = _IOWR('W', 0x10, struct snd_rawmidi_params),
 526         SNDRV_RAWMIDI_IOCTL_STATUS = _IOWR('W', 0x20, struct snd_rawmidi_status),
 527         SNDRV_RAWMIDI_IOCTL_DROP = _IOW('W', 0x30, int),
 528         SNDRV_RAWMIDI_IOCTL_DRAIN = _IOW('W', 0x31, int),
 529 };
 530
 531 /*
 532  *  Timer section - /dev/snd/timer
 533  */
 534
 535 #define SNDRV_TIMER_VERSION             SNDRV_PROTOCOL_VERSION(2, 0, 5)
 536
 537 enum {
 538         SNDRV_TIMER_CLASS_NONE = -1,
 539         SNDRV_TIMER_CLASS_SLAVE = 0,
 540         SNDRV_TIMER_CLASS_GLOBAL,
 541         SNDRV_TIMER_CLASS_CARD,
 542         SNDRV_TIMER_CLASS_PCM,
 543         SNDRV_TIMER_CLASS_LAST = SNDRV_TIMER_CLASS_PCM,
 544 };
 545
 546 /* slave timer classes */
 547 enum {
 548         SNDRV_TIMER_SCLASS_NONE = 0,
 549         SNDRV_TIMER_SCLASS_APPLICATION,
 550         SNDRV_TIMER_SCLASS_SEQUENCER,           /* alias */
 551         SNDRV_TIMER_SCLASS_OSS_SEQUENCER,       /* alias */
 552         SNDRV_TIMER_SCLASS_LAST = SNDRV_TIMER_SCLASS_OSS_SEQUENCER,
 553 };
 554
 555 /* global timers (device member) */
 556 #define SNDRV_TIMER_GLOBAL_SYSTEM       0
 557 #define SNDRV_TIMER_GLOBAL_RTC          1
 558 #define SNDRV_TIMER_GLOBAL_HPET         2
 559
 560 /* info flags */
 561 #define SNDRV_TIMER_FLG_SLAVE           (1<<0)  /* cannot be controlled */
 562
 563 struct snd_timer_id {
 564         int dev_class;
 565         int dev_sclass;
 566         int card;
 567         int device;
 568         int subdevice;
 569 };
 570
 571 struct snd_timer_ginfo {
 572         struct snd_timer_id tid;        /* requested timer ID */
 573         unsigned int flags;             /* timer flags - SNDRV_TIMER_FLG_* */
 574         int card;                       /* card number */
 575         unsigned char id[64];           /* timer identification */
 576         unsigned char name[80];         /* timer name */
 577         unsigned long reserved0;        /* reserved for future use */
 578         unsigned long resolution;       /* average period resolution in ns */
 579         unsigned long resolution_min;   /* minimal period resolution in ns */
 580         unsigned long resolution_max;   /* maximal period resolution in ns */
 581         unsigned int clients;           /* active timer clients */
 582         unsigned char reserved[32];
 583 };
 584
 585 struct snd_timer_gparams {
 586         struct snd_timer_id tid;        /* requested timer ID */
 587         unsigned long period_num;       /* requested precise period duration (in seconds) - numerator */
 588         unsigned long period_den;       /* requested precise period duration (in seconds) - denominator */
 589         unsigned char reserved[32];
 590 };
 591
 592 struct snd_timer_gstatus {
 593         struct snd_timer_id tid;        /* requested timer ID */
 594         unsigned long resolution;       /* current period resolution in ns */
 595         unsigned long resolution_num;   /* precise current period resolution (in seconds) - numerator */
 596         unsigned long resolution_den;   /* precise current period resolution (in seconds) - denominator */
 597         unsigned char reserved[32];
 598 };
 599
 600 struct snd_timer_select {
 601         struct snd_timer_id id; /* bind to timer ID */
 602         unsigned char reserved[32];     /* reserved */
 603 };
 604
 605 struct snd_timer_info {
 606         unsigned int flags;             /* timer flags - SNDRV_TIMER_FLG_* */
 607         int card;                       /* card number */
 608         unsigned char id[64];           /* timer identificator */
 609         unsigned char name[80];         /* timer name */
 610         unsigned long reserved0;        /* reserved for future use */
 611         unsigned long resolution;       /* average period resolution in ns */
 612         unsigned char reserved[64];     /* reserved */
 613 };
 614
 615 #define SNDRV_TIMER_PSFLG_AUTO          (1<<0)  /* auto start, otherwise one-shot */
 616 #define SNDRV_TIMER_PSFLG_EXCLUSIVE     (1<<1)  /* exclusive use, precise start/stop/pause/continue */
 617 #define SNDRV_TIMER_PSFLG_EARLY_EVENT   (1<<2)  /* write early event to the poll queue */
 618
 619 struct snd_timer_params {
 620         unsigned int flags;             /* flags - SNDRV_MIXER_PSFLG_* */
 621         unsigned int ticks;             /* requested resolution in ticks */
 622         unsigned int queue_size;        /* total size of queue (32-1024) */
 623         unsigned int reserved0;         /* reserved, was: failure locations */
 624         unsigned int filter;            /* event filter (bitmask of SNDRV_TIMER_EVENT_*) */
 625         unsigned char reserved[60];     /* reserved */
 626 };
 627
 628 struct snd_timer_status {
 629         struct timespec tstamp;         /* Timestamp - last update */
 630         unsigned int resolution;        /* current period resolution in ns */
 631         unsigned int lost;              /* counter of master tick lost */
 632         unsigned int overrun;           /* count of read queue overruns */
 633         unsigned int queue;             /* used queue size */
 634         unsigned char reserved[64];     /* reserved */
 635 };
 636
 637 enum {
 638         SNDRV_TIMER_IOCTL_PVERSION = _IOR('T', 0x00, int),
 639         SNDRV_TIMER_IOCTL_NEXT_DEVICE = _IOWR('T', 0x01, struct snd_timer_id),
 640         SNDRV_TIMER_IOCTL_TREAD = _IOW('T', 0x02, int),
 641         SNDRV_TIMER_IOCTL_GINFO = _IOWR('T', 0x03, struct snd_timer_ginfo),
 642         SNDRV_TIMER_IOCTL_GPARAMS = _IOW('T', 0x04, struct snd_timer_gparams),
 643         SNDRV_TIMER_IOCTL_GSTATUS = _IOWR('T', 0x05, struct snd_timer_gstatus),
 644         SNDRV_TIMER_IOCTL_SELECT = _IOW('T', 0x10, struct snd_timer_select),
 645         SNDRV_TIMER_IOCTL_INFO = _IOR('T', 0x11, struct snd_timer_info),
 646         SNDRV_TIMER_IOCTL_PARAMS = _IOW('T', 0x12, struct snd_timer_params),
 647         SNDRV_TIMER_IOCTL_STATUS = _IOR('T', 0x14, struct snd_timer_status),
 648         /* The following four ioctls are changed since 1.0.9 due to confliction */
 649         SNDRV_TIMER_IOCTL_START = _IO('T', 0xa0),
 650         SNDRV_TIMER_IOCTL_STOP = _IO('T', 0xa1),
 651         SNDRV_TIMER_IOCTL_CONTINUE = _IO('T', 0xa2),
 652         SNDRV_TIMER_IOCTL_PAUSE = _IO('T', 0xa3),
 653 };
 654
 655 struct snd_timer_read {
 656         unsigned int resolution;
 657         unsigned int ticks;
 658 };
 659
 660 enum {
 661         SNDRV_TIMER_EVENT_RESOLUTION = 0,       /* val = resolution in ns */
 662         SNDRV_TIMER_EVENT_TICK,                 /* val = ticks */
 663         SNDRV_TIMER_EVENT_START,                /* val = resolution in ns */
 664         SNDRV_TIMER_EVENT_STOP,                 /* val = 0 */
 665         SNDRV_TIMER_EVENT_CONTINUE,             /* val = resolution in ns */
 666         SNDRV_TIMER_EVENT_PAUSE,                /* val = 0 */
 667         SNDRV_TIMER_EVENT_EARLY,                /* val = 0, early event */
 668         SNDRV_TIMER_EVENT_SUSPEND,              /* val = 0 */
 669         SNDRV_TIMER_EVENT_RESUME,               /* val = resolution in ns */
 670         /* master timer events for slave timer instances */
 671         SNDRV_TIMER_EVENT_MSTART = SNDRV_TIMER_EVENT_START + 10,
 672         SNDRV_TIMER_EVENT_MSTOP = SNDRV_TIMER_EVENT_STOP + 10,
 673         SNDRV_TIMER_EVENT_MCONTINUE = SNDRV_TIMER_EVENT_CONTINUE + 10,
 674         SNDRV_TIMER_EVENT_MPAUSE = SNDRV_TIMER_EVENT_PAUSE + 10,
 675         SNDRV_TIMER_EVENT_MSUSPEND = SNDRV_TIMER_EVENT_SUSPEND + 10,
 676         SNDRV_TIMER_EVENT_MRESUME = SNDRV_TIMER_EVENT_RESUME + 10,
 677 };
 678
 679 struct snd_timer_tread {
 680         int event;
 681         struct timespec tstamp;
 682         unsigned int val;
 683 };
 684
 685 /****************************************************************************
 686  *                                                                          *
 687  *        Section for driver control interface - /dev/snd/control?          *
 688  *                                                                          *
 689  ****************************************************************************/
 690
 691 #define SNDRV_CTL_VERSION               SNDRV_PROTOCOL_VERSION(2, 0, 3)
 692
 693 struct snd_ctl_card_info {
 694         int card;                       /* card number */
 695         int pad;                        /* reserved for future (was type) */
 696         unsigned char id[16];           /* ID of card (user selectable) */
 697         unsigned char driver[16];       /* Driver name */
 698         unsigned char name[32];         /* Short name of soundcard */
 699         unsigned char longname[80];     /* name + info text about soundcard */
 700         unsigned char reserved_[16];    /* reserved for future (was ID of mixer) */
 701         unsigned char mixername[80];    /* visual mixer identification */
 702         unsigned char components[80];   /* card components / fine identification, delimited with one space (AC97 etc..) */
 703         unsigned char reserved[48];     /* reserved for future */
 704 };
 705
 706 typedef int __bitwise snd_ctl_elem_type_t;
 707 #define SNDRV_CTL_ELEM_TYPE_NONE        ((__force snd_ctl_elem_type_t) 0) /* invalid */
 708 #define SNDRV_CTL_ELEM_TYPE_BOOLEAN     ((__force snd_ctl_elem_type_t) 1) /* boolean type */
 709 #define SNDRV_CTL_ELEM_TYPE_INTEGER     ((__force snd_ctl_elem_type_t) 2) /* integer type */
 710 #define SNDRV_CTL_ELEM_TYPE_ENUMERATED  ((__force snd_ctl_elem_type_t) 3) /* enumerated type */
 711 #define SNDRV_CTL_ELEM_TYPE_BYTES       ((__force snd_ctl_elem_type_t) 4) /* byte array */
 712 #define SNDRV_CTL_ELEM_TYPE_IEC958      ((__force snd_ctl_elem_type_t) 5) /* IEC958 (S/PDIF) setup */
 713 #define SNDRV_CTL_ELEM_TYPE_INTEGER64   ((__force snd_ctl_elem_type_t) 6) /* 64-bit integer type */
 714 #define SNDRV_CTL_ELEM_TYPE_LAST        SNDRV_CTL_ELEM_TYPE_INTEGER64
 715
 716 typedef int __bitwise snd_ctl_elem_iface_t;
 717 #define SNDRV_CTL_ELEM_IFACE_CARD       ((__force snd_ctl_elem_iface_t) 0) /* global control */
 718 #define SNDRV_CTL_ELEM_IFACE_HWDEP      ((__force snd_ctl_elem_iface_t) 1) /* hardware dependent device */
 719 #define SNDRV_CTL_ELEM_IFACE_MIXER      ((__force snd_ctl_elem_iface_t) 2) /* virtual mixer device */
 720 #define SNDRV_CTL_ELEM_IFACE_PCM        ((__force snd_ctl_elem_iface_t) 3) /* PCM device */
 721 #define SNDRV_CTL_ELEM_IFACE_RAWMIDI    ((__force snd_ctl_elem_iface_t) 4) /* RawMidi device */
 722 #define SNDRV_CTL_ELEM_IFACE_TIMER      ((__force snd_ctl_elem_iface_t) 5) /* timer device */
 723 #define SNDRV_CTL_ELEM_IFACE_SEQUENCER  ((__force snd_ctl_elem_iface_t) 6) /* sequencer client */
 724 #define SNDRV_CTL_ELEM_IFACE_LAST       SNDRV_CTL_ELEM_IFACE_SEQUENCER
 725
 726 #define SNDRV_CTL_ELEM_ACCESS_READ              (1<<0)
 727 #define SNDRV_CTL_ELEM_ACCESS_WRITE             (1<<1)
 728 #define SNDRV_CTL_ELEM_ACCESS_READWRITE         (SNDRV_CTL_ELEM_ACCESS_READ|SNDRV_CTL_ELEM_ACCESS_WRITE)
 729 #define SNDRV_CTL_ELEM_ACCESS_VOLATILE          (1<<2)  /* control value may be changed without a notification */
 730 #define SNDRV_CTL_ELEM_ACCESS_TIMESTAMP         (1<<2)  /* when was control changed */
 731 #define SNDRV_CTL_ELEM_ACCESS_INACTIVE          (1<<8)  /* control does actually nothing, but may be updated */
 732 #define SNDRV_CTL_ELEM_ACCESS_LOCK              (1<<9)  /* write lock */
 733 #define SNDRV_CTL_ELEM_ACCESS_OWNER             (1<<10) /* write lock owner */
 734 #define SNDRV_CTL_ELEM_ACCESS_USER              (1<<29) /* user space element */
 735 #define SNDRV_CTL_ELEM_ACCESS_DINDIRECT         (1<<30) /* indirect access for matrix dimensions in the info structure */
 736 #define SNDRV_CTL_ELEM_ACCESS_INDIRECT          (1<<31) /* indirect access for element value in the value structure */
 737
 738 /* for further details see the ACPI and PCI power management specification */
 739 #define SNDRV_CTL_POWER_D0              0x0000  /* full On */
 740 #define SNDRV_CTL_POWER_D1              0x0100  /* partial On */
 741 #define SNDRV_CTL_POWER_D2              0x0200  /* partial On */
 742 #define SNDRV_CTL_POWER_D3              0x0300  /* Off */
 743 #define SNDRV_CTL_POWER_D3hot           (SNDRV_CTL_POWER_D3|0x0000)     /* Off, with power */
 744 #define SNDRV_CTL_POWER_D3cold          (SNDRV_CTL_POWER_D3|0x0001)     /* Off, without power */
 745
 746 struct snd_ctl_elem_id {
 747         unsigned int numid;             /* numeric identifier, zero = invalid */
 748         snd_ctl_elem_iface_t iface;     /* interface identifier */
 749         unsigned int device;            /* device/client number */
 750         unsigned int subdevice;         /* subdevice (substream) number */
 751         unsigned char name[44];         /* ASCII name of item */
 752         unsigned int index;             /* index of item */
 753 };
 754
 755 struct snd_ctl_elem_list {
 756         unsigned int offset;            /* W: first element ID to get */
 757         unsigned int space;             /* W: count of element IDs to get */
 758         unsigned int used;              /* R: count of element IDs set */
 759         unsigned int count;             /* R: count of all elements */
 760         struct snd_ctl_elem_id __user *pids; /* R: IDs */
 761         unsigned char reserved[50];
 762 };
 763
 764 struct snd_ctl_elem_info {
 765         struct snd_ctl_elem_id id;      /* W: element ID */
 766         snd_ctl_elem_type_t type;       /* R: value type - SNDRV_CTL_ELEM_TYPE_* */
 767         unsigned int access;            /* R: value access (bitmask) - SNDRV_CTL_ELEM_ACCESS_* */
 768         unsigned int count;             /* count of values */
 769         pid_t owner;                    /* owner's PID of this control */
 770         union {
 771                 struct {
 772                         long min;               /* R: minimum value */
 773                         long max;               /* R: maximum value */
 774                         long step;              /* R: step (0 variable) */
 775                 } integer;
 776                 struct {
 777                         long long min;          /* R: minimum value */
 778                         long long max;          /* R: maximum value */
 779                         long long step;         /* R: step (0 variable) */
 780                 } integer64;
 781                 struct {
 782                         unsigned int items;     /* R: number of items */
 783                         unsigned int item;      /* W: item number */
 784                         char name[64];          /* R: value name */
 785                 } enumerated;
 786                 unsigned char reserved[128];
 787         } value;
 788         union {
 789                 unsigned short d[4];            /* dimensions */
 790                 unsigned short *d_ptr;          /* indirect */
 791         } dimen;
 792         unsigned char reserved[64-4*sizeof(unsigned short)];
 793 };
 794
 795 struct snd_ctl_elem_value {
 796         struct snd_ctl_elem_id id;      /* W: element ID */
 797         unsigned int indirect: 1;       /* W: use indirect pointer (xxx_ptr member) */
 798         union {
 799                 union {
 800                         long value[128];
 801                         long *value_ptr;
 802                 } integer;
 803                 union {
 804                         long long value[64];
 805                         long long *value_ptr;
 806                 } integer64;
 807                 union {
 808                         unsigned int item[128];
 809                         unsigned int *item_ptr;
 810                 } enumerated;
 811                 union {
 812                         unsigned char data[512];
 813                         unsigned char *data_ptr;
 814                 } bytes;
 815                 struct snd_aes_iec958 iec958;
 816         } value;                /* RO */
 817         struct timespec tstamp;
 818         unsigned char reserved[128-sizeof(struct timespec)];
 819 };
 820
 821 enum {
 822         SNDRV_CTL_IOCTL_PVERSION = _IOR('U', 0x00, int),
 823         SNDRV_CTL_IOCTL_CARD_INFO = _IOR('U', 0x01, struct snd_ctl_card_info),
 824         SNDRV_CTL_IOCTL_ELEM_LIST = _IOWR('U', 0x10, struct snd_ctl_elem_list),
 825         SNDRV_CTL_IOCTL_ELEM_INFO = _IOWR('U', 0x11, struct snd_ctl_elem_info),
 826         SNDRV_CTL_IOCTL_ELEM_READ = _IOWR('U', 0x12, struct snd_ctl_elem_value),
 827         SNDRV_CTL_IOCTL_ELEM_WRITE = _IOWR('U', 0x13, struct snd_ctl_elem_value),
 828         SNDRV_CTL_IOCTL_ELEM_LOCK = _IOW('U', 0x14, struct snd_ctl_elem_id),
 829         SNDRV_CTL_IOCTL_ELEM_UNLOCK = _IOW('U', 0x15, struct snd_ctl_elem_id),
 830         SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS = _IOWR('U', 0x16, int),
 831         SNDRV_CTL_IOCTL_ELEM_ADD = _IOWR('U', 0x17, struct snd_ctl_elem_info),
 832         SNDRV_CTL_IOCTL_ELEM_REPLACE = _IOWR('U', 0x18, struct snd_ctl_elem_info),
 833         SNDRV_CTL_IOCTL_ELEM_REMOVE = _IOWR('U', 0x19, struct snd_ctl_elem_id),
 834         SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE = _IOWR('U', 0x20, int),
 835         SNDRV_CTL_IOCTL_HWDEP_INFO = _IOR('U', 0x21, struct snd_hwdep_info),
 836         SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE = _IOR('U', 0x30, int),
 837         SNDRV_CTL_IOCTL_PCM_INFO = _IOWR('U', 0x31, struct snd_pcm_info),
 838         SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE = _IOW('U', 0x32, int),
 839         SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE = _IOWR('U', 0x40, int),
 840         SNDRV_CTL_IOCTL_RAWMIDI_INFO = _IOWR('U', 0x41, struct snd_rawmidi_info),
 841         SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE = _IOW('U', 0x42, int),
 842         SNDRV_CTL_IOCTL_POWER = _IOWR('U', 0xd0, int),
 843         SNDRV_CTL_IOCTL_POWER_STATE = _IOR('U', 0xd1, int),
 844 };
 845
 846 /*
 847  *  Read interface.
 848  */
 849
 850 enum sndrv_ctl_event_type {
 851         SNDRV_CTL_EVENT_ELEM = 0,
 852         SNDRV_CTL_EVENT_LAST = SNDRV_CTL_EVENT_ELEM,
 853 };
 854
 855 #define SNDRV_CTL_EVENT_MASK_VALUE      (1<<0)  /* element value was changed */
 856 #define SNDRV_CTL_EVENT_MASK_INFO       (1<<1)  /* element info was changed */
 857 #define SNDRV_CTL_EVENT_MASK_ADD        (1<<2)  /* element was added */
 858 #define SNDRV_CTL_EVENT_MASK_REMOVE     (~0U)   /* element was removed */
 859
 860 struct snd_ctl_event {
 861         int type;       /* event type - SNDRV_CTL_EVENT_* */
 862         union {
 863                 struct {
 864                         unsigned int mask;
 865                         struct snd_ctl_elem_id id;
 866                 } elem;
 867                 unsigned char data8[60];
 868         } data;
 869 };
 870
 871 /*
 872  *  Control names
 873  */
 874
 875 #define SNDRV_CTL_NAME_NONE                             ""
 876 #define SNDRV_CTL_NAME_PLAYBACK                         "Playback "
 877 #define SNDRV_CTL_NAME_CAPTURE                          "Capture "
 878
 879 #define SNDRV_CTL_NAME_IEC958_NONE                      ""
 880 #define SNDRV_CTL_NAME_IEC958_SWITCH                    "Switch"
 881 #define SNDRV_CTL_NAME_IEC958_VOLUME                    "Volume"
 882 #define SNDRV_CTL_NAME_IEC958_DEFAULT                   "Default"
 883 #define SNDRV_CTL_NAME_IEC958_MASK                      "Mask"
 884 #define SNDRV_CTL_NAME_IEC958_CON_MASK                  "Con Mask"
 885 #define SNDRV_CTL_NAME_IEC958_PRO_MASK                  "Pro Mask"
 886 #define SNDRV_CTL_NAME_IEC958_PCM_STREAM                "PCM Stream"
 887 #define SNDRV_CTL_NAME_IEC958(expl,direction,what)      "IEC958 " expl SNDRV_CTL_NAME_##direction SNDRV_CTL_NAME_IEC958_##what
 888
 889 /*
 890  *
 891  */
 892
 893 struct snd_xferv {
 894         const struct iovec *vector;
 895         unsigned long count;
 896 };
 897
 898 enum {
 899         SNDRV_IOCTL_READV = _IOW('K', 0x00, struct snd_xferv),
 900         SNDRV_IOCTL_WRITEV = _IOW('K', 0x01, struct snd_xferv),
 901 };
 902
 903 #endif /* __SOUND_ASOUND_H */