LXR linux/include/uapi/sound/asound.h

   1/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
   2/*
   3 *  Advanced Linux Sound Architecture - ALSA - Driver
   4 *  Copyright (c) 1994-2003 by Jaroslav Kysela <perex@perex.cz>,
   5 *                             Abramo Bagnara <abramo@alsa-project.org>
   6 *
   7 *
   8 *   This program is free software; you can redistribute it and/or modify
   9 *   it under the terms of the GNU General Public License as published by
  10 *   the Free Software Foundation; either version 2 of the License, or
  11 *   (at your option) any later version.
  12 *
  13 *   This program is distributed in the hope that it will be useful,
  14 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 *   GNU General Public License for more details.
  17 *
  18 *   You should have received a copy of the GNU General Public License
  19 *   along with this program; if not, write to the Free Software
  20 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  21 *
  22 */
  23
  24#ifndef _UAPI__SOUND_ASOUND_H
  25#define _UAPI__SOUND_ASOUND_H
  26
  27#if defined(__KERNEL__) || defined(__linux__)
  28#include <linux/types.h>
  29#include <asm/byteorder.h>
  30#else
  31#include <endian.h>
  32#include <sys/ioctl.h>
  33#endif
  34
  35#ifndef __KERNEL__
  36#include <stdlib.h>
  37#include <time.h>
  38#endif
  39
  40/*
  41 *  protocol version
  42 */
  43
  44#define SNDRV_PROTOCOL_VERSION(major, minor, subminor) (((major)<<16)|((minor)<<8)|(subminor))
  45#define SNDRV_PROTOCOL_MAJOR(version) (((version)>>16)&0xffff)
  46#define SNDRV_PROTOCOL_MINOR(version) (((version)>>8)&0xff)
  47#define SNDRV_PROTOCOL_MICRO(version) ((version)&0xff)
  48#define SNDRV_PROTOCOL_INCOMPATIBLE(kversion, uversion) \
  49        (SNDRV_PROTOCOL_MAJOR(kversion) != SNDRV_PROTOCOL_MAJOR(uversion) || \
  50         (SNDRV_PROTOCOL_MAJOR(kversion) == SNDRV_PROTOCOL_MAJOR(uversion) && \
  51           SNDRV_PROTOCOL_MINOR(kversion) != SNDRV_PROTOCOL_MINOR(uversion)))
  52
  53/****************************************************************************
  54 *                                                                          *
  55 *        Digital audio interface                                           *
  56 *                                                                          *
  57 ****************************************************************************/
  58
  59#define AES_IEC958_STATUS_SIZE          24
  60
  61struct snd_aes_iec958 {
  62        unsigned char status[AES_IEC958_STATUS_SIZE]; /* AES/IEC958 channel status bits */
  63        unsigned char subcode[147];     /* AES/IEC958 subcode bits */
  64        unsigned char pad;              /* nothing */
  65        unsigned char dig_subframe[4];  /* AES/IEC958 subframe bits */
  66};
  67
  68/****************************************************************************
  69 *                                                                          *
  70 *        CEA-861 Audio InfoFrame. Used in HDMI and DisplayPort             *
  71 *                                                                          *
  72 ****************************************************************************/
  73
  74struct snd_cea_861_aud_if {
  75        unsigned char db1_ct_cc; /* coding type and channel count */
  76        unsigned char db2_sf_ss; /* sample frequency and size */
  77        unsigned char db3; /* not used, all zeros */
  78        unsigned char db4_ca; /* channel allocation code */
  79        unsigned char db5_dminh_lsv; /* downmix inhibit & level-shit values */
  80};
  81
  82/****************************************************************************
  83 *                                                                          *
  84 *      Section for driver hardware dependent interface - /dev/snd/hw?      *
  85 *                                                                          *
  86 ****************************************************************************/
  87
  88#define SNDRV_HWDEP_VERSION             SNDRV_PROTOCOL_VERSION(1, 0, 1)
  89
  90enum {
  91        SNDRV_HWDEP_IFACE_OPL2 = 0,
  92        SNDRV_HWDEP_IFACE_OPL3,
  93        SNDRV_HWDEP_IFACE_OPL4,
  94        SNDRV_HWDEP_IFACE_SB16CSP,      /* Creative Signal Processor */
  95        SNDRV_HWDEP_IFACE_EMU10K1,      /* FX8010 processor in EMU10K1 chip */
  96        SNDRV_HWDEP_IFACE_YSS225,       /* Yamaha FX processor */
  97        SNDRV_HWDEP_IFACE_ICS2115,      /* Wavetable synth */
  98        SNDRV_HWDEP_IFACE_SSCAPE,       /* Ensoniq SoundScape ISA card (MC68EC000) */
  99        SNDRV_HWDEP_IFACE_VX,           /* Digigram VX cards */
 100        SNDRV_HWDEP_IFACE_MIXART,       /* Digigram miXart cards */
 101        SNDRV_HWDEP_IFACE_USX2Y,        /* Tascam US122, US224 & US428 usb */
 102        SNDRV_HWDEP_IFACE_EMUX_WAVETABLE, /* EmuX wavetable */
 103        SNDRV_HWDEP_IFACE_BLUETOOTH,    /* Bluetooth audio */
 104        SNDRV_HWDEP_IFACE_USX2Y_PCM,    /* Tascam US122, US224 & US428 rawusb pcm */
 105        SNDRV_HWDEP_IFACE_PCXHR,        /* Digigram PCXHR */
 106        SNDRV_HWDEP_IFACE_SB_RC,        /* SB Extigy/Audigy2NX remote control */
 107        SNDRV_HWDEP_IFACE_HDA,          /* HD-audio */
 108        SNDRV_HWDEP_IFACE_USB_STREAM,   /* direct access to usb stream */
 109        SNDRV_HWDEP_IFACE_FW_DICE,      /* TC DICE FireWire device */
 110        SNDRV_HWDEP_IFACE_FW_FIREWORKS, /* Echo Audio Fireworks based device */
 111        SNDRV_HWDEP_IFACE_FW_BEBOB,     /* BridgeCo BeBoB based device */
 112        SNDRV_HWDEP_IFACE_FW_OXFW,      /* Oxford OXFW970/971 based device */
 113        SNDRV_HWDEP_IFACE_FW_DIGI00X,   /* Digidesign Digi 002/003 family */
 114        SNDRV_HWDEP_IFACE_FW_TASCAM,    /* TASCAM FireWire series */
 115        SNDRV_HWDEP_IFACE_LINE6,        /* Line6 USB processors */
 116        SNDRV_HWDEP_IFACE_FW_MOTU,      /* MOTU FireWire series */
 117        SNDRV_HWDEP_IFACE_FW_FIREFACE,  /* RME Fireface series */
 118
 119        /* Don't forget to change the following: */
 120        SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_FW_FIREFACE
 121};
 122
 123struct snd_hwdep_info {
 124        unsigned int device;            /* WR: device number */
 125        int card;                       /* R: card number */
 126        unsigned char id[64];           /* ID (user selectable) */
 127        unsigned char name[80];         /* hwdep name */
 128        int iface;                      /* hwdep interface */
 129        unsigned char reserved[64];     /* reserved for future */
 130};
 131
 132/* generic DSP loader */
 133struct snd_hwdep_dsp_status {
 134        unsigned int version;           /* R: driver-specific version */
 135        unsigned char id[32];           /* R: driver-specific ID string */
 136        unsigned int num_dsps;          /* R: number of DSP images to transfer */
 137        unsigned int dsp_loaded;        /* R: bit flags indicating the loaded DSPs */
 138        unsigned int chip_ready;        /* R: 1 = initialization finished */
 139        unsigned char reserved[16];     /* reserved for future use */
 140};
 141
 142struct snd_hwdep_dsp_image {
 143        unsigned int index;             /* W: DSP index */
 144        unsigned char name[64];         /* W: ID (e.g. file name) */
 145        unsigned char __user *image;    /* W: binary image */
 146        size_t length;                  /* W: size of image in bytes */
 147        unsigned long driver_data;      /* W: driver-specific data */
 148};
 149
 150#define SNDRV_HWDEP_IOCTL_PVERSION      _IOR ('H', 0x00, int)
 151#define SNDRV_HWDEP_IOCTL_INFO          _IOR ('H', 0x01, struct snd_hwdep_info)
 152#define SNDRV_HWDEP_IOCTL_DSP_STATUS    _IOR('H', 0x02, struct snd_hwdep_dsp_status)
 153#define SNDRV_HWDEP_IOCTL_DSP_LOAD      _IOW('H', 0x03, struct snd_hwdep_dsp_image)
 154
 155/*****************************************************************************
 156 *                                                                           *
 157 *             Digital Audio (PCM) interface - /dev/snd/pcm??                *
 158 *                                                                           *
 159 *****************************************************************************/
 160
 161#define SNDRV_PCM_VERSION               SNDRV_PROTOCOL_VERSION(2, 0, 15)
 162
 163typedef unsigned long snd_pcm_uframes_t;
 164typedef signed long snd_pcm_sframes_t;
 165
 166enum {
 167        SNDRV_PCM_CLASS_GENERIC = 0,    /* standard mono or stereo device */
 168        SNDRV_PCM_CLASS_MULTI,          /* multichannel device */
 169        SNDRV_PCM_CLASS_MODEM,          /* software modem class */
 170        SNDRV_PCM_CLASS_DIGITIZER,      /* digitizer class */
 171        /* Don't forget to change the following: */
 172        SNDRV_PCM_CLASS_LAST = SNDRV_PCM_CLASS_DIGITIZER,
 173};
 174
 175enum {
 176        SNDRV_PCM_SUBCLASS_GENERIC_MIX = 0, /* mono or stereo subdevices are mixed together */
 177        SNDRV_PCM_SUBCLASS_MULTI_MIX,   /* multichannel subdevices are mixed together */
 178        /* Don't forget to change the following: */
 179        SNDRV_PCM_SUBCLASS_LAST = SNDRV_PCM_SUBCLASS_MULTI_MIX,
 180};
 181
 182enum {
 183        SNDRV_PCM_STREAM_PLAYBACK = 0,
 184        SNDRV_PCM_STREAM_CAPTURE,
 185        SNDRV_PCM_STREAM_LAST = SNDRV_PCM_STREAM_CAPTURE,
 186};
 187
 188typedef int __bitwise snd_pcm_access_t;
 189#define SNDRV_PCM_ACCESS_MMAP_INTERLEAVED       ((__force snd_pcm_access_t) 0) /* interleaved mmap */
 190#define SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED    ((__force snd_pcm_access_t) 1) /* noninterleaved mmap */
 191#define SNDRV_PCM_ACCESS_MMAP_COMPLEX           ((__force snd_pcm_access_t) 2) /* complex mmap */
 192#define SNDRV_PCM_ACCESS_RW_INTERLEAVED         ((__force snd_pcm_access_t) 3) /* readi/writei */
 193#define SNDRV_PCM_ACCESS_RW_NONINTERLEAVED      ((__force snd_pcm_access_t) 4) /* readn/writen */
 194#define SNDRV_PCM_ACCESS_LAST           SNDRV_PCM_ACCESS_RW_NONINTERLEAVED
 195
 196typedef int __bitwise snd_pcm_format_t;
 197#define SNDRV_PCM_FORMAT_S8     ((__force snd_pcm_format_t) 0)
 198#define SNDRV_PCM_FORMAT_U8     ((__force snd_pcm_format_t) 1)
 199#define SNDRV_PCM_FORMAT_S16_LE ((__force snd_pcm_format_t) 2)
 200#define SNDRV_PCM_FORMAT_S16_BE ((__force snd_pcm_format_t) 3)
 201#define SNDRV_PCM_FORMAT_U16_LE ((__force snd_pcm_format_t) 4)
 202#define SNDRV_PCM_FORMAT_U16_BE ((__force snd_pcm_format_t) 5)
 203#define SNDRV_PCM_FORMAT_S24_LE ((__force snd_pcm_format_t) 6) /* low three bytes */
 204#define SNDRV_PCM_FORMAT_S24_BE ((__force snd_pcm_format_t) 7) /* low three bytes */
 205#define SNDRV_PCM_FORMAT_U24_LE ((__force snd_pcm_format_t) 8) /* low three bytes */
 206#define SNDRV_PCM_FORMAT_U24_BE ((__force snd_pcm_format_t) 9) /* low three bytes */
 207/*
 208 * For S32/U32 formats, 'msbits' hardware parameter is often used to deliver information about the
 209 * available bit count in most significant bit. It's for the case of so-called 'left-justified' or
 210 * `right-padding` sample which has less width than 32 bit.
 211 */
 212#define SNDRV_PCM_FORMAT_S32_LE ((__force snd_pcm_format_t) 10)
 213#define SNDRV_PCM_FORMAT_S32_BE ((__force snd_pcm_format_t) 11)
 214#define SNDRV_PCM_FORMAT_U32_LE ((__force snd_pcm_format_t) 12)
 215#define SNDRV_PCM_FORMAT_U32_BE ((__force snd_pcm_format_t) 13)
 216#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 */
 217#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 */
 218#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 */
 219#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 */
 220#define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE ((__force snd_pcm_format_t) 18) /* IEC-958 subframe, Little Endian */
 221#define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE ((__force snd_pcm_format_t) 19) /* IEC-958 subframe, Big Endian */
 222#define SNDRV_PCM_FORMAT_MU_LAW         ((__force snd_pcm_format_t) 20)
 223#define SNDRV_PCM_FORMAT_A_LAW          ((__force snd_pcm_format_t) 21)
 224#define SNDRV_PCM_FORMAT_IMA_ADPCM      ((__force snd_pcm_format_t) 22)
 225#define SNDRV_PCM_FORMAT_MPEG           ((__force snd_pcm_format_t) 23)
 226#define SNDRV_PCM_FORMAT_GSM            ((__force snd_pcm_format_t) 24)
 227#define SNDRV_PCM_FORMAT_S20_LE ((__force snd_pcm_format_t) 25) /* in four bytes, LSB justified */
 228#define SNDRV_PCM_FORMAT_S20_BE ((__force snd_pcm_format_t) 26) /* in four bytes, LSB justified */
 229#define SNDRV_PCM_FORMAT_U20_LE ((__force snd_pcm_format_t) 27) /* in four bytes, LSB justified */
 230#define SNDRV_PCM_FORMAT_U20_BE ((__force snd_pcm_format_t) 28) /* in four bytes, LSB justified */
 231/* gap in the numbering for a future standard linear format */
 232#define SNDRV_PCM_FORMAT_SPECIAL        ((__force snd_pcm_format_t) 31)
 233#define SNDRV_PCM_FORMAT_S24_3LE        ((__force snd_pcm_format_t) 32) /* in three bytes */
 234#define SNDRV_PCM_FORMAT_S24_3BE        ((__force snd_pcm_format_t) 33) /* in three bytes */
 235#define SNDRV_PCM_FORMAT_U24_3LE        ((__force snd_pcm_format_t) 34) /* in three bytes */
 236#define SNDRV_PCM_FORMAT_U24_3BE        ((__force snd_pcm_format_t) 35) /* in three bytes */
 237#define SNDRV_PCM_FORMAT_S20_3LE        ((__force snd_pcm_format_t) 36) /* in three bytes */
 238#define SNDRV_PCM_FORMAT_S20_3BE        ((__force snd_pcm_format_t) 37) /* in three bytes */
 239#define SNDRV_PCM_FORMAT_U20_3LE        ((__force snd_pcm_format_t) 38) /* in three bytes */
 240#define SNDRV_PCM_FORMAT_U20_3BE        ((__force snd_pcm_format_t) 39) /* in three bytes */
 241#define SNDRV_PCM_FORMAT_S18_3LE        ((__force snd_pcm_format_t) 40) /* in three bytes */
 242#define SNDRV_PCM_FORMAT_S18_3BE        ((__force snd_pcm_format_t) 41) /* in three bytes */
 243#define SNDRV_PCM_FORMAT_U18_3LE        ((__force snd_pcm_format_t) 42) /* in three bytes */
 244#define SNDRV_PCM_FORMAT_U18_3BE        ((__force snd_pcm_format_t) 43) /* in three bytes */
 245#define SNDRV_PCM_FORMAT_G723_24        ((__force snd_pcm_format_t) 44) /* 8 samples in 3 bytes */
 246#define SNDRV_PCM_FORMAT_G723_24_1B     ((__force snd_pcm_format_t) 45) /* 1 sample in 1 byte */
 247#define SNDRV_PCM_FORMAT_G723_40        ((__force snd_pcm_format_t) 46) /* 8 Samples in 5 bytes */
 248#define SNDRV_PCM_FORMAT_G723_40_1B     ((__force snd_pcm_format_t) 47) /* 1 sample in 1 byte */
 249#define SNDRV_PCM_FORMAT_DSD_U8         ((__force snd_pcm_format_t) 48) /* DSD, 1-byte samples DSD (x8) */
 250#define SNDRV_PCM_FORMAT_DSD_U16_LE     ((__force snd_pcm_format_t) 49) /* DSD, 2-byte samples DSD (x16), little endian */
 251#define SNDRV_PCM_FORMAT_DSD_U32_LE     ((__force snd_pcm_format_t) 50) /* DSD, 4-byte samples DSD (x32), little endian */
 252#define SNDRV_PCM_FORMAT_DSD_U16_BE     ((__force snd_pcm_format_t) 51) /* DSD, 2-byte samples DSD (x16), big endian */
 253#define SNDRV_PCM_FORMAT_DSD_U32_BE     ((__force snd_pcm_format_t) 52) /* DSD, 4-byte samples DSD (x32), big endian */
 254#define SNDRV_PCM_FORMAT_LAST           SNDRV_PCM_FORMAT_DSD_U32_BE
 255#define SNDRV_PCM_FORMAT_FIRST          SNDRV_PCM_FORMAT_S8
 256
 257#ifdef SNDRV_LITTLE_ENDIAN
 258#define SNDRV_PCM_FORMAT_S16            SNDRV_PCM_FORMAT_S16_LE
 259#define SNDRV_PCM_FORMAT_U16            SNDRV_PCM_FORMAT_U16_LE
 260#define SNDRV_PCM_FORMAT_S24            SNDRV_PCM_FORMAT_S24_LE
 261#define SNDRV_PCM_FORMAT_U24            SNDRV_PCM_FORMAT_U24_LE
 262#define SNDRV_PCM_FORMAT_S32            SNDRV_PCM_FORMAT_S32_LE
 263#define SNDRV_PCM_FORMAT_U32            SNDRV_PCM_FORMAT_U32_LE
 264#define SNDRV_PCM_FORMAT_FLOAT          SNDRV_PCM_FORMAT_FLOAT_LE
 265#define SNDRV_PCM_FORMAT_FLOAT64        SNDRV_PCM_FORMAT_FLOAT64_LE
 266#define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE
 267#define SNDRV_PCM_FORMAT_S20            SNDRV_PCM_FORMAT_S20_LE
 268#define SNDRV_PCM_FORMAT_U20            SNDRV_PCM_FORMAT_U20_LE
 269#endif
 270#ifdef SNDRV_BIG_ENDIAN
 271#define SNDRV_PCM_FORMAT_S16            SNDRV_PCM_FORMAT_S16_BE
 272#define SNDRV_PCM_FORMAT_U16            SNDRV_PCM_FORMAT_U16_BE
 273#define SNDRV_PCM_FORMAT_S24            SNDRV_PCM_FORMAT_S24_BE
 274#define SNDRV_PCM_FORMAT_U24            SNDRV_PCM_FORMAT_U24_BE
 275#define SNDRV_PCM_FORMAT_S32            SNDRV_PCM_FORMAT_S32_BE
 276#define SNDRV_PCM_FORMAT_U32            SNDRV_PCM_FORMAT_U32_BE
 277#define SNDRV_PCM_FORMAT_FLOAT          SNDRV_PCM_FORMAT_FLOAT_BE
 278#define SNDRV_PCM_FORMAT_FLOAT64        SNDRV_PCM_FORMAT_FLOAT64_BE
 279#define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE
 280#define SNDRV_PCM_FORMAT_S20            SNDRV_PCM_FORMAT_S20_BE
 281#define SNDRV_PCM_FORMAT_U20            SNDRV_PCM_FORMAT_U20_BE
 282#endif
 283
 284typedef int __bitwise snd_pcm_subformat_t;
 285#define SNDRV_PCM_SUBFORMAT_STD         ((__force snd_pcm_subformat_t) 0)
 286#define SNDRV_PCM_SUBFORMAT_LAST        SNDRV_PCM_SUBFORMAT_STD
 287
 288#define SNDRV_PCM_INFO_MMAP             0x00000001      /* hardware supports mmap */
 289#define SNDRV_PCM_INFO_MMAP_VALID       0x00000002      /* period data are valid during transfer */
 290#define SNDRV_PCM_INFO_DOUBLE           0x00000004      /* Double buffering needed for PCM start/stop */
 291#define SNDRV_PCM_INFO_BATCH            0x00000010      /* double buffering */
 292#define SNDRV_PCM_INFO_SYNC_APPLPTR     0x00000020      /* need the explicit sync of appl_ptr update */
 293#define SNDRV_PCM_INFO_INTERLEAVED      0x00000100      /* channels are interleaved */
 294#define SNDRV_PCM_INFO_NONINTERLEAVED   0x00000200      /* channels are not interleaved */
 295#define SNDRV_PCM_INFO_COMPLEX          0x00000400      /* complex frame organization (mmap only) */
 296#define SNDRV_PCM_INFO_BLOCK_TRANSFER   0x00010000      /* hardware transfer block of samples */
 297#define SNDRV_PCM_INFO_OVERRANGE        0x00020000      /* hardware supports ADC (capture) overrange detection */
 298#define SNDRV_PCM_INFO_RESUME           0x00040000      /* hardware supports stream resume after suspend */
 299#define SNDRV_PCM_INFO_PAUSE            0x00080000      /* pause ioctl is supported */
 300#define SNDRV_PCM_INFO_HALF_DUPLEX      0x00100000      /* only half duplex */
 301#define SNDRV_PCM_INFO_JOINT_DUPLEX     0x00200000      /* playback and capture stream are somewhat correlated */
 302#define SNDRV_PCM_INFO_SYNC_START       0x00400000      /* pcm support some kind of sync go */
 303#define SNDRV_PCM_INFO_NO_PERIOD_WAKEUP 0x00800000      /* period wakeup can be disabled */
 304#define SNDRV_PCM_INFO_HAS_WALL_CLOCK   0x01000000      /* (Deprecated)has audio wall clock for audio/system time sync */
 305#define SNDRV_PCM_INFO_HAS_LINK_ATIME              0x01000000  /* report hardware link audio time, reset on startup */
 306#define SNDRV_PCM_INFO_HAS_LINK_ABSOLUTE_ATIME     0x02000000  /* report absolute hardware link audio time, not reset on startup */
 307#define SNDRV_PCM_INFO_HAS_LINK_ESTIMATED_ATIME    0x04000000  /* report estimated link audio time */
 308#define SNDRV_PCM_INFO_HAS_LINK_SYNCHRONIZED_ATIME 0x08000000  /* report synchronized audio/system time */
 309#define SNDRV_PCM_INFO_EXPLICIT_SYNC    0x10000000      /* needs explicit sync of pointers and data */
 310#define SNDRV_PCM_INFO_NO_REWINDS       0x20000000      /* hardware can only support monotonic changes of appl_ptr */
 311#define SNDRV_PCM_INFO_DRAIN_TRIGGER    0x40000000              /* internal kernel flag - trigger in drain */
 312#define SNDRV_PCM_INFO_FIFO_IN_FRAMES   0x80000000      /* internal kernel flag - FIFO size is in frames */
 313
 314#if (__BITS_PER_LONG == 32 && defined(__USE_TIME_BITS64)) || defined __KERNEL__
 315#define __SND_STRUCT_TIME64
 316#endif
 317
 318typedef int __bitwise snd_pcm_state_t;
 319#define SNDRV_PCM_STATE_OPEN            ((__force snd_pcm_state_t) 0) /* stream is open */
 320#define SNDRV_PCM_STATE_SETUP           ((__force snd_pcm_state_t) 1) /* stream has a setup */
 321#define SNDRV_PCM_STATE_PREPARED        ((__force snd_pcm_state_t) 2) /* stream is ready to start */
 322#define SNDRV_PCM_STATE_RUNNING         ((__force snd_pcm_state_t) 3) /* stream is running */
 323#define SNDRV_PCM_STATE_XRUN            ((__force snd_pcm_state_t) 4) /* stream reached an xrun */
 324#define SNDRV_PCM_STATE_DRAINING        ((__force snd_pcm_state_t) 5) /* stream is draining */
 325#define SNDRV_PCM_STATE_PAUSED          ((__force snd_pcm_state_t) 6) /* stream is paused */
 326#define SNDRV_PCM_STATE_SUSPENDED       ((__force snd_pcm_state_t) 7) /* hardware is suspended */
 327#define SNDRV_PCM_STATE_DISCONNECTED    ((__force snd_pcm_state_t) 8) /* hardware is disconnected */
 328#define SNDRV_PCM_STATE_LAST            SNDRV_PCM_STATE_DISCONNECTED
 329
 330enum {
 331        SNDRV_PCM_MMAP_OFFSET_DATA = 0x00000000,
 332        SNDRV_PCM_MMAP_OFFSET_STATUS_OLD = 0x80000000,
 333        SNDRV_PCM_MMAP_OFFSET_CONTROL_OLD = 0x81000000,
 334        SNDRV_PCM_MMAP_OFFSET_STATUS_NEW = 0x82000000,
 335        SNDRV_PCM_MMAP_OFFSET_CONTROL_NEW = 0x83000000,
 336#ifdef __SND_STRUCT_TIME64
 337        SNDRV_PCM_MMAP_OFFSET_STATUS = SNDRV_PCM_MMAP_OFFSET_STATUS_NEW,
 338        SNDRV_PCM_MMAP_OFFSET_CONTROL = SNDRV_PCM_MMAP_OFFSET_CONTROL_NEW,
 339#else
 340        SNDRV_PCM_MMAP_OFFSET_STATUS = SNDRV_PCM_MMAP_OFFSET_STATUS_OLD,
 341        SNDRV_PCM_MMAP_OFFSET_CONTROL = SNDRV_PCM_MMAP_OFFSET_CONTROL_OLD,
 342#endif
 343};
 344
 345union snd_pcm_sync_id {
 346        unsigned char id[16];
 347        unsigned short id16[8];
 348        unsigned int id32[4];
 349};
 350
 351struct snd_pcm_info {
 352        unsigned int device;            /* RO/WR (control): device number */
 353        unsigned int subdevice;         /* RO/WR (control): subdevice number */
 354        int stream;                     /* RO/WR (control): stream direction */
 355        int card;                       /* R: card number */
 356        unsigned char id[64];           /* ID (user selectable) */
 357        unsigned char name[80];         /* name of this device */
 358        unsigned char subname[32];      /* subdevice name */
 359        int dev_class;                  /* SNDRV_PCM_CLASS_* */
 360        int dev_subclass;               /* SNDRV_PCM_SUBCLASS_* */
 361        unsigned int subdevices_count;
 362        unsigned int subdevices_avail;
 363        union snd_pcm_sync_id sync;     /* hardware synchronization ID */
 364        unsigned char reserved[64];     /* reserved for future... */
 365};
 366
 367typedef int snd_pcm_hw_param_t;
 368#define SNDRV_PCM_HW_PARAM_ACCESS       0       /* Access type */
 369#define SNDRV_PCM_HW_PARAM_FORMAT       1       /* Format */
 370#define SNDRV_PCM_HW_PARAM_SUBFORMAT    2       /* Subformat */
 371#define SNDRV_PCM_HW_PARAM_FIRST_MASK   SNDRV_PCM_HW_PARAM_ACCESS
 372#define SNDRV_PCM_HW_PARAM_LAST_MASK    SNDRV_PCM_HW_PARAM_SUBFORMAT
 373
 374#define SNDRV_PCM_HW_PARAM_SAMPLE_BITS  8       /* Bits per sample */
 375#define SNDRV_PCM_HW_PARAM_FRAME_BITS   9       /* Bits per frame */
 376#define SNDRV_PCM_HW_PARAM_CHANNELS     10      /* Channels */
 377#define SNDRV_PCM_HW_PARAM_RATE         11      /* Approx rate */
 378#define SNDRV_PCM_HW_PARAM_PERIOD_TIME  12      /* Approx distance between
 379                                                 * interrupts in us
 380                                                 */
 381#define SNDRV_PCM_HW_PARAM_PERIOD_SIZE  13      /* Approx frames between
 382                                                 * interrupts
 383                                                 */
 384#define SNDRV_PCM_HW_PARAM_PERIOD_BYTES 14      /* Approx bytes between
 385                                                 * interrupts
 386                                                 */
 387#define SNDRV_PCM_HW_PARAM_PERIODS      15      /* Approx interrupts per
 388                                                 * buffer
 389                                                 */
 390#define SNDRV_PCM_HW_PARAM_BUFFER_TIME  16      /* Approx duration of buffer
 391                                                 * in us
 392                                                 */
 393#define SNDRV_PCM_HW_PARAM_BUFFER_SIZE  17      /* Size of buffer in frames */
 394#define SNDRV_PCM_HW_PARAM_BUFFER_BYTES 18      /* Size of buffer in bytes */
 395#define SNDRV_PCM_HW_PARAM_TICK_TIME    19      /* Approx tick duration in us */
 396#define SNDRV_PCM_HW_PARAM_FIRST_INTERVAL       SNDRV_PCM_HW_PARAM_SAMPLE_BITS
 397#define SNDRV_PCM_HW_PARAM_LAST_INTERVAL        SNDRV_PCM_HW_PARAM_TICK_TIME
 398
 399#define SNDRV_PCM_HW_PARAMS_NORESAMPLE  (1<<0)  /* avoid rate resampling */
 400#define SNDRV_PCM_HW_PARAMS_EXPORT_BUFFER       (1<<1)  /* export buffer */
 401#define SNDRV_PCM_HW_PARAMS_NO_PERIOD_WAKEUP    (1<<2)  /* disable period wakeups */
 402
 403struct snd_interval {
 404        unsigned int min, max;
 405        unsigned int openmin:1,
 406                     openmax:1,
 407                     integer:1,
 408                     empty:1;
 409};
 410
 411#define SNDRV_MASK_MAX  256
 412
 413struct snd_mask {
 414        __u32 bits[(SNDRV_MASK_MAX+31)/32];
 415};
 416
 417struct snd_pcm_hw_params {
 418        unsigned int flags;
 419        struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK -
 420                               SNDRV_PCM_HW_PARAM_FIRST_MASK + 1];
 421        struct snd_mask mres[5];        /* reserved masks */
 422        struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL -
 423                                        SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];
 424        struct snd_interval ires[9];    /* reserved intervals */
 425        unsigned int rmask;             /* W: requested masks */
 426        unsigned int cmask;             /* R: changed masks */
 427        unsigned int info;              /* R: Info flags for returned setup */
 428        unsigned int msbits;            /* R: used most significant bits */
 429        unsigned int rate_num;          /* R: rate numerator */
 430        unsigned int rate_den;          /* R: rate denominator */
 431        snd_pcm_uframes_t fifo_size;    /* R: chip FIFO size in frames */
 432        unsigned char reserved[64];     /* reserved for future */
 433};
 434
 435enum {
 436        SNDRV_PCM_TSTAMP_NONE = 0,
 437        SNDRV_PCM_TSTAMP_ENABLE,
 438        SNDRV_PCM_TSTAMP_LAST = SNDRV_PCM_TSTAMP_ENABLE,
 439};
 440
 441struct snd_pcm_sw_params {
 442        int tstamp_mode;                        /* timestamp mode */
 443        unsigned int period_step;
 444        unsigned int sleep_min;                 /* min ticks to sleep */
 445        snd_pcm_uframes_t avail_min;            /* min avail frames for wakeup */
 446        snd_pcm_uframes_t xfer_align;           /* obsolete: xfer size need to be a multiple */
 447        snd_pcm_uframes_t start_threshold;      /* min hw_avail frames for automatic start */
 448        snd_pcm_uframes_t stop_threshold;       /* min avail frames for automatic stop */
 449        snd_pcm_uframes_t silence_threshold;    /* min distance from noise for silence filling */
 450        snd_pcm_uframes_t silence_size;         /* silence block size */
 451        snd_pcm_uframes_t boundary;             /* pointers wrap point */
 452        unsigned int proto;                     /* protocol version */
 453        unsigned int tstamp_type;               /* timestamp type (req. proto >= 2.0.12) */
 454        unsigned char reserved[56];             /* reserved for future */
 455};
 456
 457struct snd_pcm_channel_info {
 458        unsigned int channel;
 459        __kernel_off_t offset;          /* mmap offset */
 460        unsigned int first;             /* offset to first sample in bits */
 461        unsigned int step;              /* samples distance in bits */
 462};
 463
 464enum {
 465        /*
 466         *  first definition for backwards compatibility only,
 467         *  maps to wallclock/link time for HDAudio playback and DEFAULT/DMA time for everything else
 468         */
 469        SNDRV_PCM_AUDIO_TSTAMP_TYPE_COMPAT = 0,
 470
 471        /* timestamp definitions */
 472        SNDRV_PCM_AUDIO_TSTAMP_TYPE_DEFAULT = 1,           /* DMA time, reported as per hw_ptr */
 473        SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK = 2,              /* link time reported by sample or wallclock counter, reset on startup */
 474        SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_ABSOLUTE = 3,     /* link time reported by sample or wallclock counter, not reset on startup */
 475        SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_ESTIMATED = 4,    /* link time estimated indirectly */
 476        SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_SYNCHRONIZED = 5, /* link time synchronized with system time */
 477        SNDRV_PCM_AUDIO_TSTAMP_TYPE_LAST = SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_SYNCHRONIZED
 478};
 479
 480#ifndef __KERNEL__
 481/* explicit padding avoids incompatibility between i386 and x86-64 */
 482typedef struct { unsigned char pad[sizeof(time_t) - sizeof(int)]; } __time_pad;
 483
 484struct snd_pcm_status {
 485        snd_pcm_state_t state;          /* stream state */
 486        __time_pad pad1;                /* align to timespec */
 487        struct timespec trigger_tstamp; /* time when stream was started/stopped/paused */
 488        struct timespec tstamp;         /* reference timestamp */
 489        snd_pcm_uframes_t appl_ptr;     /* appl ptr */
 490        snd_pcm_uframes_t hw_ptr;       /* hw ptr */
 491        snd_pcm_sframes_t delay;        /* current delay in frames */
 492        snd_pcm_uframes_t avail;        /* number of frames available */
 493        snd_pcm_uframes_t avail_max;    /* max frames available on hw since last status */
 494        snd_pcm_uframes_t overrange;    /* count of ADC (capture) overrange detections from last status */
 495        snd_pcm_state_t suspended_state; /* suspended stream state */
 496        __u32 audio_tstamp_data;         /* needed for 64-bit alignment, used for configs/report to/from userspace */
 497        struct timespec audio_tstamp;   /* sample counter, wall clock, PHC or on-demand sync'ed */
 498        struct timespec driver_tstamp;  /* useful in case reference system tstamp is reported with delay */
 499        __u32 audio_tstamp_accuracy;    /* in ns units, only valid if indicated in audio_tstamp_data */
 500        unsigned char reserved[52-2*sizeof(struct timespec)]; /* must be filled with zero */
 501};
 502#endif
 503
 504/*
 505 * For mmap operations, we need the 64-bit layout, both for compat mode,
 506 * and for y2038 compatibility. For 64-bit applications, the two definitions
 507 * are identical, so we keep the traditional version.
 508 */
 509#ifdef __SND_STRUCT_TIME64
 510#define __snd_pcm_mmap_status64         snd_pcm_mmap_status
 511#define __snd_pcm_mmap_control64        snd_pcm_mmap_control
 512#define __snd_pcm_sync_ptr64            snd_pcm_sync_ptr
 513#ifdef __KERNEL__
 514#define __snd_timespec64                __kernel_timespec
 515#else
 516#define __snd_timespec64                timespec
 517#endif
 518struct __snd_timespec {
 519        __s32 tv_sec;
 520        __s32 tv_nsec;
 521};
 522#else
 523#define __snd_pcm_mmap_status           snd_pcm_mmap_status
 524#define __snd_pcm_mmap_control          snd_pcm_mmap_control
 525#define __snd_pcm_sync_ptr              snd_pcm_sync_ptr
 526#define __snd_timespec                  timespec
 527struct __snd_timespec64 {
 528        __s64 tv_sec;
 529        __s64 tv_nsec;
 530};
 531
 532#endif
 533
 534struct __snd_pcm_mmap_status {
 535        snd_pcm_state_t state;          /* RO: state - SNDRV_PCM_STATE_XXXX */
 536        int pad1;                       /* Needed for 64 bit alignment */
 537        snd_pcm_uframes_t hw_ptr;       /* RO: hw ptr (0...boundary-1) */
 538        struct __snd_timespec tstamp;   /* Timestamp */
 539        snd_pcm_state_t suspended_state; /* RO: suspended stream state */
 540        struct __snd_timespec audio_tstamp; /* from sample counter or wall clock */
 541};
 542
 543struct __snd_pcm_mmap_control {
 544        snd_pcm_uframes_t appl_ptr;     /* RW: appl ptr (0...boundary-1) */
 545        snd_pcm_uframes_t avail_min;    /* RW: min available frames for wakeup */
 546};
 547
 548#define SNDRV_PCM_SYNC_PTR_HWSYNC       (1<<0)  /* execute hwsync */
 549#define SNDRV_PCM_SYNC_PTR_APPL         (1<<1)  /* get appl_ptr from driver (r/w op) */
 550#define SNDRV_PCM_SYNC_PTR_AVAIL_MIN    (1<<2)  /* get avail_min from driver */
 551
 552struct __snd_pcm_sync_ptr {
 553        unsigned int flags;
 554        union {
 555                struct __snd_pcm_mmap_status status;
 556                unsigned char reserved[64];
 557        } s;
 558        union {
 559                struct __snd_pcm_mmap_control control;
 560                unsigned char reserved[64];
 561        } c;
 562};
 563
 564#if defined(__BYTE_ORDER) ? __BYTE_ORDER == __BIG_ENDIAN : defined(__BIG_ENDIAN)
 565typedef char __pad_before_uframe[sizeof(__u64) - sizeof(snd_pcm_uframes_t)];
 566typedef char __pad_after_uframe[0];
 567#endif
 568
 569#if defined(__BYTE_ORDER) ? __BYTE_ORDER == __LITTLE_ENDIAN : defined(__LITTLE_ENDIAN)
 570typedef char __pad_before_uframe[0];
 571typedef char __pad_after_uframe[sizeof(__u64) - sizeof(snd_pcm_uframes_t)];
 572#endif
 573
 574struct __snd_pcm_mmap_status64 {
 575        snd_pcm_state_t state;          /* RO: state - SNDRV_PCM_STATE_XXXX */
 576        __u32 pad1;                     /* Needed for 64 bit alignment */
 577        __pad_before_uframe __pad1;
 578        snd_pcm_uframes_t hw_ptr;       /* RO: hw ptr (0...boundary-1) */
 579        __pad_after_uframe __pad2;
 580        struct __snd_timespec64 tstamp; /* Timestamp */
 581        snd_pcm_state_t suspended_state;/* RO: suspended stream state */
 582        __u32 pad3;                     /* Needed for 64 bit alignment */
 583        struct __snd_timespec64 audio_tstamp; /* sample counter or wall clock */
 584};
 585
 586struct __snd_pcm_mmap_control64 {
 587        __pad_before_uframe __pad1;
 588        snd_pcm_uframes_t appl_ptr;      /* RW: appl ptr (0...boundary-1) */
 589        __pad_before_uframe __pad2;
 590
 591        __pad_before_uframe __pad3;
 592        snd_pcm_uframes_t  avail_min;    /* RW: min available frames for wakeup */
 593        __pad_after_uframe __pad4;
 594};
 595
 596struct __snd_pcm_sync_ptr64 {
 597        __u32 flags;
 598        __u32 pad1;
 599        union {
 600                struct __snd_pcm_mmap_status64 status;
 601                unsigned char reserved[64];
 602        } s;
 603        union {
 604                struct __snd_pcm_mmap_control64 control;
 605                unsigned char reserved[64];
 606        } c;
 607};
 608
 609struct snd_xferi {
 610        snd_pcm_sframes_t result;
 611        void __user *buf;
 612        snd_pcm_uframes_t frames;
 613};
 614
 615struct snd_xfern {
 616        snd_pcm_sframes_t result;
 617        void __user * __user *bufs;
 618        snd_pcm_uframes_t frames;
 619};
 620
 621enum {
 622        SNDRV_PCM_TSTAMP_TYPE_GETTIMEOFDAY = 0, /* gettimeofday equivalent */
 623        SNDRV_PCM_TSTAMP_TYPE_MONOTONIC,        /* posix_clock_monotonic equivalent */
 624        SNDRV_PCM_TSTAMP_TYPE_MONOTONIC_RAW,    /* monotonic_raw (no NTP) */
 625        SNDRV_PCM_TSTAMP_TYPE_LAST = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC_RAW,
 626};
 627
 628/* channel positions */
 629enum {
 630        SNDRV_CHMAP_UNKNOWN = 0,
 631        SNDRV_CHMAP_NA,         /* N/A, silent */
 632        SNDRV_CHMAP_MONO,       /* mono stream */
 633        /* this follows the alsa-lib mixer channel value + 3 */
 634        SNDRV_CHMAP_FL,         /* front left */
 635        SNDRV_CHMAP_FR,         /* front right */
 636        SNDRV_CHMAP_RL,         /* rear left */
 637        SNDRV_CHMAP_RR,         /* rear right */
 638        SNDRV_CHMAP_FC,         /* front center */
 639        SNDRV_CHMAP_LFE,        /* LFE */
 640        SNDRV_CHMAP_SL,         /* side left */
 641        SNDRV_CHMAP_SR,         /* side right */
 642        SNDRV_CHMAP_RC,         /* rear center */
 643        /* new definitions */
 644        SNDRV_CHMAP_FLC,        /* front left center */
 645        SNDRV_CHMAP_FRC,        /* front right center */
 646        SNDRV_CHMAP_RLC,        /* rear left center */
 647        SNDRV_CHMAP_RRC,        /* rear right center */
 648        SNDRV_CHMAP_FLW,        /* front left wide */
 649        SNDRV_CHMAP_FRW,        /* front right wide */
 650        SNDRV_CHMAP_FLH,        /* front left high */
 651        SNDRV_CHMAP_FCH,        /* front center high */
 652        SNDRV_CHMAP_FRH,        /* front right high */
 653        SNDRV_CHMAP_TC,         /* top center */
 654        SNDRV_CHMAP_TFL,        /* top front left */
 655        SNDRV_CHMAP_TFR,        /* top front right */
 656        SNDRV_CHMAP_TFC,        /* top front center */
 657        SNDRV_CHMAP_TRL,        /* top rear left */
 658        SNDRV_CHMAP_TRR,        /* top rear right */
 659        SNDRV_CHMAP_TRC,        /* top rear center */
 660        /* new definitions for UAC2 */
 661        SNDRV_CHMAP_TFLC,       /* top front left center */
 662        SNDRV_CHMAP_TFRC,       /* top front right center */
 663        SNDRV_CHMAP_TSL,        /* top side left */
 664        SNDRV_CHMAP_TSR,        /* top side right */
 665        SNDRV_CHMAP_LLFE,       /* left LFE */
 666        SNDRV_CHMAP_RLFE,       /* right LFE */
 667        SNDRV_CHMAP_BC,         /* bottom center */
 668        SNDRV_CHMAP_BLC,        /* bottom left center */
 669        SNDRV_CHMAP_BRC,        /* bottom right center */
 670        SNDRV_CHMAP_LAST = SNDRV_CHMAP_BRC,
 671};
 672
 673#define SNDRV_CHMAP_POSITION_MASK       0xffff
 674#define SNDRV_CHMAP_PHASE_INVERSE       (0x01 << 16)
 675#define SNDRV_CHMAP_DRIVER_SPEC         (0x02 << 16)
 676
 677#define SNDRV_PCM_IOCTL_PVERSION        _IOR('A', 0x00, int)
 678#define SNDRV_PCM_IOCTL_INFO            _IOR('A', 0x01, struct snd_pcm_info)
 679#define SNDRV_PCM_IOCTL_TSTAMP          _IOW('A', 0x02, int)
 680#define SNDRV_PCM_IOCTL_TTSTAMP         _IOW('A', 0x03, int)
 681#define SNDRV_PCM_IOCTL_USER_PVERSION   _IOW('A', 0x04, int)
 682#define SNDRV_PCM_IOCTL_HW_REFINE       _IOWR('A', 0x10, struct snd_pcm_hw_params)
 683#define SNDRV_PCM_IOCTL_HW_PARAMS       _IOWR('A', 0x11, struct snd_pcm_hw_params)
 684#define SNDRV_PCM_IOCTL_HW_FREE         _IO('A', 0x12)
 685#define SNDRV_PCM_IOCTL_SW_PARAMS       _IOWR('A', 0x13, struct snd_pcm_sw_params)
 686#define SNDRV_PCM_IOCTL_STATUS          _IOR('A', 0x20, struct snd_pcm_status)
 687#define SNDRV_PCM_IOCTL_DELAY           _IOR('A', 0x21, snd_pcm_sframes_t)
 688#define SNDRV_PCM_IOCTL_HWSYNC          _IO('A', 0x22)
 689#define __SNDRV_PCM_IOCTL_SYNC_PTR      _IOWR('A', 0x23, struct __snd_pcm_sync_ptr)
 690#define __SNDRV_PCM_IOCTL_SYNC_PTR64    _IOWR('A', 0x23, struct __snd_pcm_sync_ptr64)
 691#define SNDRV_PCM_IOCTL_SYNC_PTR        _IOWR('A', 0x23, struct snd_pcm_sync_ptr)
 692#define SNDRV_PCM_IOCTL_STATUS_EXT      _IOWR('A', 0x24, struct snd_pcm_status)
 693#define SNDRV_PCM_IOCTL_CHANNEL_INFO    _IOR('A', 0x32, struct snd_pcm_channel_info)
 694#define SNDRV_PCM_IOCTL_PREPARE         _IO('A', 0x40)
 695#define SNDRV_PCM_IOCTL_RESET           _IO('A', 0x41)
 696#define SNDRV_PCM_IOCTL_START           _IO('A', 0x42)
 697#define SNDRV_PCM_IOCTL_DROP            _IO('A', 0x43)
 698#define SNDRV_PCM_IOCTL_DRAIN           _IO('A', 0x44)
 699#define SNDRV_PCM_IOCTL_PAUSE           _IOW('A', 0x45, int)
 700#define SNDRV_PCM_IOCTL_REWIND          _IOW('A', 0x46, snd_pcm_uframes_t)
 701#define SNDRV_PCM_IOCTL_RESUME          _IO('A', 0x47)
 702#define SNDRV_PCM_IOCTL_XRUN            _IO('A', 0x48)
 703#define SNDRV_PCM_IOCTL_FORWARD         _IOW('A', 0x49, snd_pcm_uframes_t)
 704#define SNDRV_PCM_IOCTL_WRITEI_FRAMES   _IOW('A', 0x50, struct snd_xferi)
 705#define SNDRV_PCM_IOCTL_READI_FRAMES    _IOR('A', 0x51, struct snd_xferi)
 706#define SNDRV_PCM_IOCTL_WRITEN_FRAMES   _IOW('A', 0x52, struct snd_xfern)
 707#define SNDRV_PCM_IOCTL_READN_FRAMES    _IOR('A', 0x53, struct snd_xfern)
 708#define SNDRV_PCM_IOCTL_LINK            _IOW('A', 0x60, int)
 709#define SNDRV_PCM_IOCTL_UNLINK          _IO('A', 0x61)
 710
 711/*****************************************************************************
 712 *                                                                           *
 713 *                            MIDI v1.0 interface                            *
 714 *                                                                           *
 715 *****************************************************************************/
 716
 717/*
 718 *  Raw MIDI section - /dev/snd/midi??
 719 */
 720
 721#define SNDRV_RAWMIDI_VERSION           SNDRV_PROTOCOL_VERSION(2, 0, 2)
 722
 723enum {
 724        SNDRV_RAWMIDI_STREAM_OUTPUT = 0,
 725        SNDRV_RAWMIDI_STREAM_INPUT,
 726        SNDRV_RAWMIDI_STREAM_LAST = SNDRV_RAWMIDI_STREAM_INPUT,
 727};
 728
 729#define SNDRV_RAWMIDI_INFO_OUTPUT               0x00000001
 730#define SNDRV_RAWMIDI_INFO_INPUT                0x00000002
 731#define SNDRV_RAWMIDI_INFO_DUPLEX               0x00000004
 732
 733struct snd_rawmidi_info {
 734        unsigned int device;            /* RO/WR (control): device number */
 735        unsigned int subdevice;         /* RO/WR (control): subdevice number */
 736        int stream;                     /* WR: stream */
 737        int card;                       /* R: card number */
 738        unsigned int flags;             /* SNDRV_RAWMIDI_INFO_XXXX */
 739        unsigned char id[64];           /* ID (user selectable) */
 740        unsigned char name[80];         /* name of device */
 741        unsigned char subname[32];      /* name of active or selected subdevice */
 742        unsigned int subdevices_count;
 743        unsigned int subdevices_avail;
 744        unsigned char reserved[64];     /* reserved for future use */
 745};
 746
 747#define SNDRV_RAWMIDI_MODE_FRAMING_MASK         (7<<0)
 748#define SNDRV_RAWMIDI_MODE_FRAMING_SHIFT        0
 749#define SNDRV_RAWMIDI_MODE_FRAMING_NONE         (0<<0)
 750#define SNDRV_RAWMIDI_MODE_FRAMING_TSTAMP       (1<<0)
 751#define SNDRV_RAWMIDI_MODE_CLOCK_MASK           (7<<3)
 752#define SNDRV_RAWMIDI_MODE_CLOCK_SHIFT          3
 753#define SNDRV_RAWMIDI_MODE_CLOCK_NONE           (0<<3)
 754#define SNDRV_RAWMIDI_MODE_CLOCK_REALTIME       (1<<3)
 755#define SNDRV_RAWMIDI_MODE_CLOCK_MONOTONIC      (2<<3)
 756#define SNDRV_RAWMIDI_MODE_CLOCK_MONOTONIC_RAW  (3<<3)
 757
 758#define SNDRV_RAWMIDI_FRAMING_DATA_LENGTH 16
 759
 760struct snd_rawmidi_framing_tstamp {
 761        /* For now, frame_type is always 0. Midi 2.0 is expected to add new
 762         * types here. Applications are expected to skip unknown frame types.
 763         */
 764        __u8 frame_type;
 765        __u8 length; /* number of valid bytes in data field */
 766        __u8 reserved[2];
 767        __u32 tv_nsec;          /* nanoseconds */
 768        __u64 tv_sec;           /* seconds */
 769        __u8 data[SNDRV_RAWMIDI_FRAMING_DATA_LENGTH];
 770} __packed;
 771
 772struct snd_rawmidi_params {
 773        int stream;
 774        size_t buffer_size;             /* queue size in bytes */
 775        size_t avail_min;               /* minimum avail bytes for wakeup */
 776        unsigned int no_active_sensing: 1; /* do not send active sensing byte in close() */
 777        unsigned int mode;              /* For input data only, frame incoming data */
 778        unsigned char reserved[12];     /* reserved for future use */
 779};
 780
 781#ifndef __KERNEL__
 782struct snd_rawmidi_status {
 783        int stream;
 784        __time_pad pad1;
 785        struct timespec tstamp;         /* Timestamp */
 786        size_t avail;                   /* available bytes */
 787        size_t xruns;                   /* count of overruns since last status (in bytes) */
 788        unsigned char reserved[16];     /* reserved for future use */
 789};
 790#endif
 791
 792#define SNDRV_RAWMIDI_IOCTL_PVERSION    _IOR('W', 0x00, int)
 793#define SNDRV_RAWMIDI_IOCTL_INFO        _IOR('W', 0x01, struct snd_rawmidi_info)
 794#define SNDRV_RAWMIDI_IOCTL_USER_PVERSION _IOW('W', 0x02, int)
 795#define SNDRV_RAWMIDI_IOCTL_PARAMS      _IOWR('W', 0x10, struct snd_rawmidi_params)
 796#define SNDRV_RAWMIDI_IOCTL_STATUS      _IOWR('W', 0x20, struct snd_rawmidi_status)
 797#define SNDRV_RAWMIDI_IOCTL_DROP        _IOW('W', 0x30, int)
 798#define SNDRV_RAWMIDI_IOCTL_DRAIN       _IOW('W', 0x31, int)
 799
 800/*
 801 *  Timer section - /dev/snd/timer
 802 */
 803
 804#define SNDRV_TIMER_VERSION             SNDRV_PROTOCOL_VERSION(2, 0, 7)
 805
 806enum {
 807        SNDRV_TIMER_CLASS_NONE = -1,
 808        SNDRV_TIMER_CLASS_SLAVE = 0,
 809        SNDRV_TIMER_CLASS_GLOBAL,
 810        SNDRV_TIMER_CLASS_CARD,
 811        SNDRV_TIMER_CLASS_PCM,
 812        SNDRV_TIMER_CLASS_LAST = SNDRV_TIMER_CLASS_PCM,
 813};
 814
 815/* slave timer classes */
 816enum {
 817        SNDRV_TIMER_SCLASS_NONE = 0,
 818        SNDRV_TIMER_SCLASS_APPLICATION,
 819        SNDRV_TIMER_SCLASS_SEQUENCER,           /* alias */
 820        SNDRV_TIMER_SCLASS_OSS_SEQUENCER,       /* alias */
 821        SNDRV_TIMER_SCLASS_LAST = SNDRV_TIMER_SCLASS_OSS_SEQUENCER,
 822};
 823
 824/* global timers (device member) */
 825#define SNDRV_TIMER_GLOBAL_SYSTEM       0
 826#define SNDRV_TIMER_GLOBAL_RTC          1       /* unused */
 827#define SNDRV_TIMER_GLOBAL_HPET         2
 828#define SNDRV_TIMER_GLOBAL_HRTIMER      3
 829
 830/* info flags */
 831#define SNDRV_TIMER_FLG_SLAVE           (1<<0)  /* cannot be controlled */
 832
 833struct snd_timer_id {
 834        int dev_class;
 835        int dev_sclass;
 836        int card;
 837        int device;
 838        int subdevice;
 839};
 840
 841struct snd_timer_ginfo {
 842        struct snd_timer_id tid;        /* requested timer ID */
 843        unsigned int flags;             /* timer flags - SNDRV_TIMER_FLG_* */
 844        int card;                       /* card number */
 845        unsigned char id[64];           /* timer identification */
 846        unsigned char name[80];         /* timer name */
 847        unsigned long reserved0;        /* reserved for future use */
 848        unsigned long resolution;       /* average period resolution in ns */
 849        unsigned long resolution_min;   /* minimal period resolution in ns */
 850        unsigned long resolution_max;   /* maximal period resolution in ns */
 851        unsigned int clients;           /* active timer clients */
 852        unsigned char reserved[32];
 853};
 854
 855struct snd_timer_gparams {
 856        struct snd_timer_id tid;        /* requested timer ID */
 857        unsigned long period_num;       /* requested precise period duration (in seconds) - numerator */
 858        unsigned long period_den;       /* requested precise period duration (in seconds) - denominator */
 859        unsigned char reserved[32];
 860};
 861
 862struct snd_timer_gstatus {
 863        struct snd_timer_id tid;        /* requested timer ID */
 864        unsigned long resolution;       /* current period resolution in ns */
 865        unsigned long resolution_num;   /* precise current period resolution (in seconds) - numerator */
 866        unsigned long resolution_den;   /* precise current period resolution (in seconds) - denominator */
 867        unsigned char reserved[32];
 868};
 869
 870struct snd_timer_select {
 871        struct snd_timer_id id; /* bind to timer ID */
 872        unsigned char reserved[32];     /* reserved */
 873};
 874
 875struct snd_timer_info {
 876        unsigned int flags;             /* timer flags - SNDRV_TIMER_FLG_* */
 877        int card;                       /* card number */
 878        unsigned char id[64];           /* timer identificator */
 879        unsigned char name[80];         /* timer name */
 880        unsigned long reserved0;        /* reserved for future use */
 881        unsigned long resolution;       /* average period resolution in ns */
 882        unsigned char reserved[64];     /* reserved */
 883};
 884
 885#define SNDRV_TIMER_PSFLG_AUTO          (1<<0)  /* auto start, otherwise one-shot */
 886#define SNDRV_TIMER_PSFLG_EXCLUSIVE     (1<<1)  /* exclusive use, precise start/stop/pause/continue */
 887#define SNDRV_TIMER_PSFLG_EARLY_EVENT   (1<<2)  /* write early event to the poll queue */
 888
 889struct snd_timer_params {
 890        unsigned int flags;             /* flags - SNDRV_TIMER_PSFLG_* */
 891        unsigned int ticks;             /* requested resolution in ticks */
 892        unsigned int queue_size;        /* total size of queue (32-1024) */
 893        unsigned int reserved0;         /* reserved, was: failure locations */
 894        unsigned int filter;            /* event filter (bitmask of SNDRV_TIMER_EVENT_*) */
 895        unsigned char reserved[60];     /* reserved */
 896};
 897
 898#ifndef __KERNEL__
 899struct snd_timer_status {
 900        struct timespec tstamp;         /* Timestamp - last update */
 901        unsigned int resolution;        /* current period resolution in ns */
 902        unsigned int lost;              /* counter of master tick lost */
 903        unsigned int overrun;           /* count of read queue overruns */
 904        unsigned int queue;             /* used queue size */
 905        unsigned char reserved[64];     /* reserved */
 906};
 907#endif
 908
 909#define SNDRV_TIMER_IOCTL_PVERSION      _IOR('T', 0x00, int)
 910#define SNDRV_TIMER_IOCTL_NEXT_DEVICE   _IOWR('T', 0x01, struct snd_timer_id)
 911#define SNDRV_TIMER_IOCTL_TREAD_OLD     _IOW('T', 0x02, int)
 912#define SNDRV_TIMER_IOCTL_GINFO         _IOWR('T', 0x03, struct snd_timer_ginfo)
 913#define SNDRV_TIMER_IOCTL_GPARAMS       _IOW('T', 0x04, struct snd_timer_gparams)
 914#define SNDRV_TIMER_IOCTL_GSTATUS       _IOWR('T', 0x05, struct snd_timer_gstatus)
 915#define SNDRV_TIMER_IOCTL_SELECT        _IOW('T', 0x10, struct snd_timer_select)
 916#define SNDRV_TIMER_IOCTL_INFO          _IOR('T', 0x11, struct snd_timer_info)
 917#define SNDRV_TIMER_IOCTL_PARAMS        _IOW('T', 0x12, struct snd_timer_params)
 918#define SNDRV_TIMER_IOCTL_STATUS        _IOR('T', 0x14, struct snd_timer_status)
 919/* The following four ioctls are changed since 1.0.9 due to confliction */
 920#define SNDRV_TIMER_IOCTL_START         _IO('T', 0xa0)
 921#define SNDRV_TIMER_IOCTL_STOP          _IO('T', 0xa1)
 922#define SNDRV_TIMER_IOCTL_CONTINUE      _IO('T', 0xa2)
 923#define SNDRV_TIMER_IOCTL_PAUSE         _IO('T', 0xa3)
 924#define SNDRV_TIMER_IOCTL_TREAD64       _IOW('T', 0xa4, int)
 925
 926#if __BITS_PER_LONG == 64
 927#define SNDRV_TIMER_IOCTL_TREAD SNDRV_TIMER_IOCTL_TREAD_OLD
 928#else
 929#define SNDRV_TIMER_IOCTL_TREAD ((sizeof(__kernel_long_t) >= sizeof(time_t)) ? \
 930                                 SNDRV_TIMER_IOCTL_TREAD_OLD : \
 931                                 SNDRV_TIMER_IOCTL_TREAD64)
 932#endif
 933
 934struct snd_timer_read {
 935        unsigned int resolution;
 936        unsigned int ticks;
 937};
 938
 939enum {
 940        SNDRV_TIMER_EVENT_RESOLUTION = 0,       /* val = resolution in ns */
 941        SNDRV_TIMER_EVENT_TICK,                 /* val = ticks */
 942        SNDRV_TIMER_EVENT_START,                /* val = resolution in ns */
 943        SNDRV_TIMER_EVENT_STOP,                 /* val = 0 */
 944        SNDRV_TIMER_EVENT_CONTINUE,             /* val = resolution in ns */
 945        SNDRV_TIMER_EVENT_PAUSE,                /* val = 0 */
 946        SNDRV_TIMER_EVENT_EARLY,                /* val = 0, early event */
 947        SNDRV_TIMER_EVENT_SUSPEND,              /* val = 0 */
 948        SNDRV_TIMER_EVENT_RESUME,               /* val = resolution in ns */
 949        /* master timer events for slave timer instances */
 950        SNDRV_TIMER_EVENT_MSTART = SNDRV_TIMER_EVENT_START + 10,
 951        SNDRV_TIMER_EVENT_MSTOP = SNDRV_TIMER_EVENT_STOP + 10,
 952        SNDRV_TIMER_EVENT_MCONTINUE = SNDRV_TIMER_EVENT_CONTINUE + 10,
 953        SNDRV_TIMER_EVENT_MPAUSE = SNDRV_TIMER_EVENT_PAUSE + 10,
 954        SNDRV_TIMER_EVENT_MSUSPEND = SNDRV_TIMER_EVENT_SUSPEND + 10,
 955        SNDRV_TIMER_EVENT_MRESUME = SNDRV_TIMER_EVENT_RESUME + 10,
 956};
 957
 958#ifndef __KERNEL__
 959struct snd_timer_tread {
 960        int event;
 961        __time_pad pad1;
 962        struct timespec tstamp;
 963        unsigned int val;
 964        __time_pad pad2;
 965};
 966#endif
 967
 968/****************************************************************************
 969 *                                                                          *
 970 *        Section for driver control interface - /dev/snd/control?          *
 971 *                                                                          *
 972 ****************************************************************************/
 973
 974#define SNDRV_CTL_VERSION               SNDRV_PROTOCOL_VERSION(2, 0, 8)
 975
 976struct snd_ctl_card_info {
 977        int card;                       /* card number */
 978        int pad;                        /* reserved for future (was type) */
 979        unsigned char id[16];           /* ID of card (user selectable) */
 980        unsigned char driver[16];       /* Driver name */
 981        unsigned char name[32];         /* Short name of soundcard */
 982        unsigned char longname[80];     /* name + info text about soundcard */
 983        unsigned char reserved_[16];    /* reserved for future (was ID of mixer) */
 984        unsigned char mixername[80];    /* visual mixer identification */
 985        unsigned char components[128];  /* card components / fine identification, delimited with one space (AC97 etc..) */
 986};
 987
 988typedef int __bitwise snd_ctl_elem_type_t;
 989#define SNDRV_CTL_ELEM_TYPE_NONE        ((__force snd_ctl_elem_type_t) 0) /* invalid */
 990#define SNDRV_CTL_ELEM_TYPE_BOOLEAN     ((__force snd_ctl_elem_type_t) 1) /* boolean type */
 991#define SNDRV_CTL_ELEM_TYPE_INTEGER     ((__force snd_ctl_elem_type_t) 2) /* integer type */
 992#define SNDRV_CTL_ELEM_TYPE_ENUMERATED  ((__force snd_ctl_elem_type_t) 3) /* enumerated type */
 993#define SNDRV_CTL_ELEM_TYPE_BYTES       ((__force snd_ctl_elem_type_t) 4) /* byte array */
 994#define SNDRV_CTL_ELEM_TYPE_IEC958      ((__force snd_ctl_elem_type_t) 5) /* IEC958 (S/PDIF) setup */
 995#define SNDRV_CTL_ELEM_TYPE_INTEGER64   ((__force snd_ctl_elem_type_t) 6) /* 64-bit integer type */
 996#define SNDRV_CTL_ELEM_TYPE_LAST        SNDRV_CTL_ELEM_TYPE_INTEGER64
 997
 998typedef int __bitwise snd_ctl_elem_iface_t;
 999#define SNDRV_CTL_ELEM_IFACE_CARD       ((__force snd_ctl_elem_iface_t) 0) /* global control */
1000#define SNDRV_CTL_ELEM_IFACE_HWDEP      ((__force snd_ctl_elem_iface_t) 1) /* hardware dependent device */

1001#define SNDRV_CTL_ELEM_IFACE_MIXER      ((__force snd_ctl_elem_iface_t) 2) /* virtual mixer device */
1002#define SNDRV_CTL_ELEM_IFACE_PCM        ((__force snd_ctl_elem_iface_t) 3) /* PCM device */
1003#define SNDRV_CTL_ELEM_IFACE_RAWMIDI    ((__force snd_ctl_elem_iface_t) 4) /* RawMidi device */
1004#define SNDRV_CTL_ELEM_IFACE_TIMER      ((__force snd_ctl_elem_iface_t) 5) /* timer device */
1005#define SNDRV_CTL_ELEM_IFACE_SEQUENCER  ((__force snd_ctl_elem_iface_t) 6) /* sequencer client */
1006#define SNDRV_CTL_ELEM_IFACE_LAST       SNDRV_CTL_ELEM_IFACE_SEQUENCER
1007
1008#define SNDRV_CTL_ELEM_ACCESS_READ              (1<<0)
1009#define SNDRV_CTL_ELEM_ACCESS_WRITE             (1<<1)
1010#define SNDRV_CTL_ELEM_ACCESS_READWRITE         (SNDRV_CTL_ELEM_ACCESS_READ|SNDRV_CTL_ELEM_ACCESS_WRITE)
1011#define SNDRV_CTL_ELEM_ACCESS_VOLATILE          (1<<2)  /* control value may be changed without a notification */
1012/* (1 << 3) is unused. */
1013#define SNDRV_CTL_ELEM_ACCESS_TLV_READ          (1<<4)  /* TLV read is possible */
1014#define SNDRV_CTL_ELEM_ACCESS_TLV_WRITE         (1<<5)  /* TLV write is possible */
1015#define SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE     (SNDRV_CTL_ELEM_ACCESS_TLV_READ|SNDRV_CTL_ELEM_ACCESS_TLV_WRITE)
1016#define SNDRV_CTL_ELEM_ACCESS_TLV_COMMAND       (1<<6)  /* TLV command is possible */
1017#define SNDRV_CTL_ELEM_ACCESS_INACTIVE          (1<<8)  /* control does actually nothing, but may be updated */
1018#define SNDRV_CTL_ELEM_ACCESS_LOCK              (1<<9)  /* write lock */
1019#define SNDRV_CTL_ELEM_ACCESS_OWNER             (1<<10) /* write lock owner */
1020#define SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK      (1<<28) /* kernel use a TLV callback */
1021#define SNDRV_CTL_ELEM_ACCESS_USER              (1<<29) /* user space element */
1022/* bits 30 and 31 are obsoleted (for indirect access) */
1023
1024/* for further details see the ACPI and PCI power management specification */
1025#define SNDRV_CTL_POWER_D0              0x0000  /* full On */
1026#define SNDRV_CTL_POWER_D1              0x0100  /* partial On */
1027#define SNDRV_CTL_POWER_D2              0x0200  /* partial On */
1028#define SNDRV_CTL_POWER_D3              0x0300  /* Off */
1029#define SNDRV_CTL_POWER_D3hot           (SNDRV_CTL_POWER_D3|0x0000)     /* Off, with power */
1030#define SNDRV_CTL_POWER_D3cold          (SNDRV_CTL_POWER_D3|0x0001)     /* Off, without power */
1031
1032#define SNDRV_CTL_ELEM_ID_NAME_MAXLEN   44
1033
1034struct snd_ctl_elem_id {
1035        unsigned int numid;             /* numeric identifier, zero = invalid */
1036        snd_ctl_elem_iface_t iface;     /* interface identifier */
1037        unsigned int device;            /* device/client number */
1038        unsigned int subdevice;         /* subdevice (substream) number */
1039        unsigned char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];              /* ASCII name of item */
1040        unsigned int index;             /* index of item */
1041};
1042
1043struct snd_ctl_elem_list {
1044        unsigned int offset;            /* W: first element ID to get */
1045        unsigned int space;             /* W: count of element IDs to get */
1046        unsigned int used;              /* R: count of element IDs set */
1047        unsigned int count;             /* R: count of all elements */
1048        struct snd_ctl_elem_id __user *pids; /* R: IDs */
1049        unsigned char reserved[50];
1050};
1051
1052struct snd_ctl_elem_info {
1053        struct snd_ctl_elem_id id;      /* W: element ID */
1054        snd_ctl_elem_type_t type;       /* R: value type - SNDRV_CTL_ELEM_TYPE_* */
1055        unsigned int access;            /* R: value access (bitmask) - SNDRV_CTL_ELEM_ACCESS_* */
1056        unsigned int count;             /* count of values */
1057        __kernel_pid_t owner;           /* owner's PID of this control */
1058        union {
1059                struct {
1060                        long min;               /* R: minimum value */
1061                        long max;               /* R: maximum value */
1062                        long step;              /* R: step (0 variable) */
1063                } integer;
1064                struct {
1065                        long long min;          /* R: minimum value */
1066                        long long max;          /* R: maximum value */
1067                        long long step;         /* R: step (0 variable) */
1068                } integer64;
1069                struct {
1070                        unsigned int items;     /* R: number of items */
1071                        unsigned int item;      /* W: item number */
1072                        char name[64];          /* R: value name */
1073                        __u64 names_ptr;        /* W: names list (ELEM_ADD only) */
1074                        unsigned int names_length;
1075                } enumerated;
1076                unsigned char reserved[128];
1077        } value;
1078        unsigned char reserved[64];
1079};
1080
1081struct snd_ctl_elem_value {
1082        struct snd_ctl_elem_id id;      /* W: element ID */
1083        unsigned int indirect: 1;       /* W: indirect access - obsoleted */
1084        union {
1085                union {
1086                        long value[128];
1087                        long *value_ptr;        /* obsoleted */
1088                } integer;
1089                union {
1090                        long long value[64];
1091                        long long *value_ptr;   /* obsoleted */
1092                } integer64;
1093                union {
1094                        unsigned int item[128];
1095                        unsigned int *item_ptr; /* obsoleted */
1096                } enumerated;
1097                union {
1098                        unsigned char data[512];
1099                        unsigned char *data_ptr;        /* obsoleted */
1100                } bytes;
1101                struct snd_aes_iec958 iec958;
1102        } value;                /* RO */
1103        unsigned char reserved[128];
1104};
1105
1106struct snd_ctl_tlv {
1107        unsigned int numid;     /* control element numeric identification */
1108        unsigned int length;    /* in bytes aligned to 4 */
1109        unsigned int tlv[0];    /* first TLV */
1110};
1111
1112#define SNDRV_CTL_IOCTL_PVERSION        _IOR('U', 0x00, int)
1113#define SNDRV_CTL_IOCTL_CARD_INFO       _IOR('U', 0x01, struct snd_ctl_card_info)
1114#define SNDRV_CTL_IOCTL_ELEM_LIST       _IOWR('U', 0x10, struct snd_ctl_elem_list)
1115#define SNDRV_CTL_IOCTL_ELEM_INFO       _IOWR('U', 0x11, struct snd_ctl_elem_info)
1116#define SNDRV_CTL_IOCTL_ELEM_READ       _IOWR('U', 0x12, struct snd_ctl_elem_value)
1117#define SNDRV_CTL_IOCTL_ELEM_WRITE      _IOWR('U', 0x13, struct snd_ctl_elem_value)
1118#define SNDRV_CTL_IOCTL_ELEM_LOCK       _IOW('U', 0x14, struct snd_ctl_elem_id)
1119#define SNDRV_CTL_IOCTL_ELEM_UNLOCK     _IOW('U', 0x15, struct snd_ctl_elem_id)
1120#define SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS _IOWR('U', 0x16, int)
1121#define SNDRV_CTL_IOCTL_ELEM_ADD        _IOWR('U', 0x17, struct snd_ctl_elem_info)
1122#define SNDRV_CTL_IOCTL_ELEM_REPLACE    _IOWR('U', 0x18, struct snd_ctl_elem_info)
1123#define SNDRV_CTL_IOCTL_ELEM_REMOVE     _IOWR('U', 0x19, struct snd_ctl_elem_id)
1124#define SNDRV_CTL_IOCTL_TLV_READ        _IOWR('U', 0x1a, struct snd_ctl_tlv)
1125#define SNDRV_CTL_IOCTL_TLV_WRITE       _IOWR('U', 0x1b, struct snd_ctl_tlv)
1126#define SNDRV_CTL_IOCTL_TLV_COMMAND     _IOWR('U', 0x1c, struct snd_ctl_tlv)
1127#define SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE _IOWR('U', 0x20, int)
1128#define SNDRV_CTL_IOCTL_HWDEP_INFO      _IOR('U', 0x21, struct snd_hwdep_info)
1129#define SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE _IOR('U', 0x30, int)
1130#define SNDRV_CTL_IOCTL_PCM_INFO        _IOWR('U', 0x31, struct snd_pcm_info)
1131#define SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE _IOW('U', 0x32, int)
1132#define SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE _IOWR('U', 0x40, int)
1133#define SNDRV_CTL_IOCTL_RAWMIDI_INFO    _IOWR('U', 0x41, struct snd_rawmidi_info)
1134#define SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE _IOW('U', 0x42, int)
1135#define SNDRV_CTL_IOCTL_POWER           _IOWR('U', 0xd0, int)
1136#define SNDRV_CTL_IOCTL_POWER_STATE     _IOR('U', 0xd1, int)
1137
1138/*
1139 *  Read interface.
1140 */
1141
1142enum sndrv_ctl_event_type {
1143        SNDRV_CTL_EVENT_ELEM = 0,
1144        SNDRV_CTL_EVENT_LAST = SNDRV_CTL_EVENT_ELEM,
1145};
1146
1147#define SNDRV_CTL_EVENT_MASK_VALUE      (1<<0)  /* element value was changed */
1148#define SNDRV_CTL_EVENT_MASK_INFO       (1<<1)  /* element info was changed */
1149#define SNDRV_CTL_EVENT_MASK_ADD        (1<<2)  /* element was added */
1150#define SNDRV_CTL_EVENT_MASK_TLV        (1<<3)  /* element TLV tree was changed */
1151#define SNDRV_CTL_EVENT_MASK_REMOVE     (~0U)   /* element was removed */
1152
1153struct snd_ctl_event {
1154        int type;       /* event type - SNDRV_CTL_EVENT_* */
1155        union {
1156                struct {
1157                        unsigned int mask;
1158                        struct snd_ctl_elem_id id;
1159                } elem;
1160                unsigned char data8[60];
1161        } data;
1162};
1163
1164/*
1165 *  Control names
1166 */
1167
1168#define SNDRV_CTL_NAME_NONE                             ""
1169#define SNDRV_CTL_NAME_PLAYBACK                         "Playback "
1170#define SNDRV_CTL_NAME_CAPTURE                          "Capture "
1171
1172#define SNDRV_CTL_NAME_IEC958_NONE                      ""
1173#define SNDRV_CTL_NAME_IEC958_SWITCH                    "Switch"
1174#define SNDRV_CTL_NAME_IEC958_VOLUME                    "Volume"
1175#define SNDRV_CTL_NAME_IEC958_DEFAULT                   "Default"
1176#define SNDRV_CTL_NAME_IEC958_MASK                      "Mask"
1177#define SNDRV_CTL_NAME_IEC958_CON_MASK                  "Con Mask"
1178#define SNDRV_CTL_NAME_IEC958_PRO_MASK                  "Pro Mask"
1179#define SNDRV_CTL_NAME_IEC958_PCM_STREAM                "PCM Stream"
1180#define SNDRV_CTL_NAME_IEC958(expl,direction,what)      "IEC958 " expl SNDRV_CTL_NAME_##direction SNDRV_CTL_NAME_IEC958_##what
1181
1182#endif /* _UAPI__SOUND_ASOUND_H */
1183