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

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