root/tools/include/uapi/sound/asound.h

INCLUDED FROM

   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 #else
  30 #include <sys/ioctl.h>
  31 #endif
  32 
  33 #ifndef __KERNEL__
  34 #include <stdlib.h>
  35 #include <time.h>
  36 #endif
  37 
  38 /*
  39  *  protocol version
  40  */
  41 
  42 #define SNDRV_PROTOCOL_VERSION(major, minor, subminor) (((major)<<16)|((minor)<<8)|(subminor))
  43 #define SNDRV_PROTOCOL_MAJOR(version) (((version)>>16)&0xffff)
  44 #define SNDRV_PROTOCOL_MINOR(version) (((version)>>8)&0xff)
  45 #define SNDRV_PROTOCOL_MICRO(version) ((version)&0xff)
  46 #define SNDRV_PROTOCOL_INCOMPATIBLE(kversion, uversion) \
  47         (SNDRV_PROTOCOL_MAJOR(kversion) != SNDRV_PROTOCOL_MAJOR(uversion) || \
  48          (SNDRV_PROTOCOL_MAJOR(kversion) == SNDRV_PROTOCOL_MAJOR(uversion) && \
  49            SNDRV_PROTOCOL_MINOR(kversion) != SNDRV_PROTOCOL_MINOR(uversion)))
  50 
  51 /****************************************************************************
  52  *                                                                          *
  53  *        Digital audio interface                                           *
  54  *                                                                          *
  55  ****************************************************************************/
  56 
  57 struct snd_aes_iec958 {
  58         unsigned char status[24];       /* AES/IEC958 channel status bits */
  59         unsigned char subcode[147];     /* AES/IEC958 subcode bits */
  60         unsigned char pad;              /* nothing */
  61         unsigned char dig_subframe[4];  /* AES/IEC958 subframe bits */
  62 };
  63 
  64 /****************************************************************************
  65  *                                                                          *
  66  *        CEA-861 Audio InfoFrame. Used in HDMI and DisplayPort             *
  67  *                                                                          *
  68  ****************************************************************************/
  69 
  70 struct snd_cea_861_aud_if {
  71         unsigned char db1_ct_cc; /* coding type and channel count */
  72         unsigned char db2_sf_ss; /* sample frequency and size */
  73         unsigned char db3; /* not used, all zeros */
  74         unsigned char db4_ca; /* channel allocation code */
  75         unsigned char db5_dminh_lsv; /* downmix inhibit & level-shit values */
  76 };
  77 
  78 /****************************************************************************
  79  *                                                                          *
  80  *      Section for driver hardware dependent interface - /dev/snd/hw?      *
  81  *                                                                          *
  82  ****************************************************************************/
  83 
  84 #define SNDRV_HWDEP_VERSION             SNDRV_PROTOCOL_VERSION(1, 0, 1)
  85 
  86 enum {
  87         SNDRV_HWDEP_IFACE_OPL2 = 0,
  88         SNDRV_HWDEP_IFACE_OPL3,
  89         SNDRV_HWDEP_IFACE_OPL4,
  90         SNDRV_HWDEP_IFACE_SB16CSP,      /* Creative Signal Processor */
  91         SNDRV_HWDEP_IFACE_EMU10K1,      /* FX8010 processor in EMU10K1 chip */
  92         SNDRV_HWDEP_IFACE_YSS225,       /* Yamaha FX processor */
  93         SNDRV_HWDEP_IFACE_ICS2115,      /* Wavetable synth */
  94         SNDRV_HWDEP_IFACE_SSCAPE,       /* Ensoniq SoundScape ISA card (MC68EC000) */
  95         SNDRV_HWDEP_IFACE_VX,           /* Digigram VX cards */
  96         SNDRV_HWDEP_IFACE_MIXART,       /* Digigram miXart cards */
  97         SNDRV_HWDEP_IFACE_USX2Y,        /* Tascam US122, US224 & US428 usb */
  98         SNDRV_HWDEP_IFACE_EMUX_WAVETABLE, /* EmuX wavetable */
  99         SNDRV_HWDEP_IFACE_BLUETOOTH,    /* Bluetooth audio */
 100         SNDRV_HWDEP_IFACE_USX2Y_PCM,    /* Tascam US122, US224 & US428 rawusb pcm */
 101         SNDRV_HWDEP_IFACE_PCXHR,        /* Digigram PCXHR */
 102         SNDRV_HWDEP_IFACE_SB_RC,        /* SB Extigy/Audigy2NX remote control */
 103         SNDRV_HWDEP_IFACE_HDA,          /* HD-audio */
 104         SNDRV_HWDEP_IFACE_USB_STREAM,   /* direct access to usb stream */
 105         SNDRV_HWDEP_IFACE_FW_DICE,      /* TC DICE FireWire device */
 106         SNDRV_HWDEP_IFACE_FW_FIREWORKS, /* Echo Audio Fireworks based device */
 107         SNDRV_HWDEP_IFACE_FW_BEBOB,     /* BridgeCo BeBoB based device */
 108         SNDRV_HWDEP_IFACE_FW_OXFW,      /* Oxford OXFW970/971 based device */
 109         SNDRV_HWDEP_IFACE_FW_DIGI00X,   /* Digidesign Digi 002/003 family */
 110         SNDRV_HWDEP_IFACE_FW_TASCAM,    /* TASCAM FireWire series */
 111         SNDRV_HWDEP_IFACE_LINE6,        /* Line6 USB processors */
 112         SNDRV_HWDEP_IFACE_FW_MOTU,      /* MOTU FireWire series */
 113         SNDRV_HWDEP_IFACE_FW_FIREFACE,  /* RME Fireface series */
 114 
 115         /* Don't forget to change the following: */
 116         SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_FW_FIREFACE
 117 };
 118 
 119 struct snd_hwdep_info {
 120         unsigned int device;            /* WR: device number */
 121         int card;                       /* R: card number */
 122         unsigned char id[64];           /* ID (user selectable) */
 123         unsigned char name[80];         /* hwdep name */
 124         int iface;                      /* hwdep interface */
 125         unsigned char reserved[64];     /* reserved for future */
 126 };
 127 
 128 /* generic DSP loader */
 129 struct snd_hwdep_dsp_status {
 130         unsigned int version;           /* R: driver-specific version */
 131         unsigned char id[32];           /* R: driver-specific ID string */
 132         unsigned int num_dsps;          /* R: number of DSP images to transfer */
 133         unsigned int dsp_loaded;        /* R: bit flags indicating the loaded DSPs */
 134         unsigned int chip_ready;        /* R: 1 = initialization finished */
 135         unsigned char reserved[16];     /* reserved for future use */
 136 };
 137 
 138 struct snd_hwdep_dsp_image {
 139         unsigned int index;             /* W: DSP index */
 140         unsigned char name[64];         /* W: ID (e.g. file name) */
 141         unsigned char __user *image;    /* W: binary image */
 142         size_t length;                  /* W: size of image in bytes */
 143         unsigned long driver_data;      /* W: driver-specific data */
 144 };
 145 
 146 #define SNDRV_HWDEP_IOCTL_PVERSION      _IOR ('H', 0x00, int)
 147 #define SNDRV_HWDEP_IOCTL_INFO          _IOR ('H', 0x01, struct snd_hwdep_info)
 148 #define SNDRV_HWDEP_IOCTL_DSP_STATUS    _IOR('H', 0x02, struct snd_hwdep_dsp_status)
 149 #define SNDRV_HWDEP_IOCTL_DSP_LOAD      _IOW('H', 0x03, struct snd_hwdep_dsp_image)
 150 
 151 /*****************************************************************************
 152  *                                                                           *
 153  *             Digital Audio (PCM) interface - /dev/snd/pcm??                *
 154  *                                                                           *
 155  *****************************************************************************/
 156 
 157 #define SNDRV_PCM_VERSION               SNDRV_PROTOCOL_VERSION(2, 0, 14)
 158 
 159 typedef unsigned long snd_pcm_uframes_t;
 160 typedef signed long snd_pcm_sframes_t;
 161 
 162 enum {
 163         SNDRV_PCM_CLASS_GENERIC = 0,    /* standard mono or stereo device */
 164         SNDRV_PCM_CLASS_MULTI,          /* multichannel device */
 165         SNDRV_PCM_CLASS_MODEM,          /* software modem class */
 166         SNDRV_PCM_CLASS_DIGITIZER,      /* digitizer class */
 167         /* Don't forget to change the following: */
 168         SNDRV_PCM_CLASS_LAST = SNDRV_PCM_CLASS_DIGITIZER,
 169 };
 170 
 171 enum {
 172         SNDRV_PCM_SUBCLASS_GENERIC_MIX = 0, /* mono or stereo subdevices are mixed together */
 173         SNDRV_PCM_SUBCLASS_MULTI_MIX,   /* multichannel subdevices are mixed together */
 174         /* Don't forget to change the following: */
 175         SNDRV_PCM_SUBCLASS_LAST = SNDRV_PCM_SUBCLASS_MULTI_MIX,
 176 };
 177 
 178 enum {
 179         SNDRV_PCM_STREAM_PLAYBACK = 0,
 180         SNDRV_PCM_STREAM_CAPTURE,
 181         SNDRV_PCM_STREAM_LAST = SNDRV_PCM_STREAM_CAPTURE,
 182 };
 183 
 184 typedef int __bitwise snd_pcm_access_t;
 185 #define SNDRV_PCM_ACCESS_MMAP_INTERLEAVED       ((__force snd_pcm_access_t) 0) /* interleaved mmap */
 186 #define SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED    ((__force snd_pcm_access_t) 1) /* noninterleaved mmap */
 187 #define SNDRV_PCM_ACCESS_MMAP_COMPLEX           ((__force snd_pcm_access_t) 2) /* complex mmap */
 188 #define SNDRV_PCM_ACCESS_RW_INTERLEAVED         ((__force snd_pcm_access_t) 3) /* readi/writei */
 189 #define SNDRV_PCM_ACCESS_RW_NONINTERLEAVED      ((__force snd_pcm_access_t) 4) /* readn/writen */
 190 #define SNDRV_PCM_ACCESS_LAST           SNDRV_PCM_ACCESS_RW_NONINTERLEAVED
 191 
 192 typedef int __bitwise snd_pcm_format_t;
 193 #define SNDRV_PCM_FORMAT_S8     ((__force snd_pcm_format_t) 0)
 194 #define SNDRV_PCM_FORMAT_U8     ((__force snd_pcm_format_t) 1)
 195 #define SNDRV_PCM_FORMAT_S16_LE ((__force snd_pcm_format_t) 2)
 196 #define SNDRV_PCM_FORMAT_S16_BE ((__force snd_pcm_format_t) 3)
 197 #define SNDRV_PCM_FORMAT_U16_LE ((__force snd_pcm_format_t) 4)
 198 #define SNDRV_PCM_FORMAT_U16_BE ((__force snd_pcm_format_t) 5)
 199 #define SNDRV_PCM_FORMAT_S24_LE ((__force snd_pcm_format_t) 6) /* low three bytes */
 200 #define SNDRV_PCM_FORMAT_S24_BE ((__force snd_pcm_format_t) 7) /* low three bytes */
 201 #define SNDRV_PCM_FORMAT_U24_LE ((__force snd_pcm_format_t) 8) /* low three bytes */
 202 #define SNDRV_PCM_FORMAT_U24_BE ((__force snd_pcm_format_t) 9) /* low three bytes */
 203 #define SNDRV_PCM_FORMAT_S32_LE ((__force snd_pcm_format_t) 10)
 204 #define SNDRV_PCM_FORMAT_S32_BE ((__force snd_pcm_format_t) 11)
 205 #define SNDRV_PCM_FORMAT_U32_LE ((__force snd_pcm_format_t) 12)
 206 #define SNDRV_PCM_FORMAT_U32_BE ((__force snd_pcm_format_t) 13)
 207 #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 */
 208 #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 */
 209 #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 */
 210 #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 */
 211 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE ((__force snd_pcm_format_t) 18) /* IEC-958 subframe, Little Endian */
 212 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE ((__force snd_pcm_format_t) 19) /* IEC-958 subframe, Big Endian */
 213 #define SNDRV_PCM_FORMAT_MU_LAW         ((__force snd_pcm_format_t) 20)
 214 #define SNDRV_PCM_FORMAT_A_LAW          ((__force snd_pcm_format_t) 21)
 215 #define SNDRV_PCM_FORMAT_IMA_ADPCM      ((__force snd_pcm_format_t) 22)
 216 #define SNDRV_PCM_FORMAT_MPEG           ((__force snd_pcm_format_t) 23)
 217 #define SNDRV_PCM_FORMAT_GSM            ((__force snd_pcm_format_t) 24)
 218 #define SNDRV_PCM_FORMAT_S20_LE ((__force snd_pcm_format_t) 25) /* in four bytes, LSB justified */
 219 #define SNDRV_PCM_FORMAT_S20_BE ((__force snd_pcm_format_t) 26) /* in four bytes, LSB justified */
 220 #define SNDRV_PCM_FORMAT_U20_LE ((__force snd_pcm_format_t) 27) /* in four bytes, LSB justified */
 221 #define SNDRV_PCM_FORMAT_U20_BE ((__force snd_pcm_format_t) 28) /* in four bytes, LSB justified */
 222 /* gap in the numbering for a future standard linear format */
 223 #define SNDRV_PCM_FORMAT_SPECIAL        ((__force snd_pcm_format_t) 31)
 224 #define SNDRV_PCM_FORMAT_S24_3LE        ((__force snd_pcm_format_t) 32) /* in three bytes */
 225 #define SNDRV_PCM_FORMAT_S24_3BE        ((__force snd_pcm_format_t) 33) /* in three bytes */
 226 #define SNDRV_PCM_FORMAT_U24_3LE        ((__force snd_pcm_format_t) 34) /* in three bytes */
 227 #define SNDRV_PCM_FORMAT_U24_3BE        ((__force snd_pcm_format_t) 35) /* in three bytes */
 228 #define SNDRV_PCM_FORMAT_S20_3LE        ((__force snd_pcm_format_t) 36) /* in three bytes */
 229 #define SNDRV_PCM_FORMAT_S20_3BE        ((__force snd_pcm_format_t) 37) /* in three bytes */
 230 #define SNDRV_PCM_FORMAT_U20_3LE        ((__force snd_pcm_format_t) 38) /* in three bytes */
 231 #define SNDRV_PCM_FORMAT_U20_3BE        ((__force snd_pcm_format_t) 39) /* in three bytes */
 232 #define SNDRV_PCM_FORMAT_S18_3LE        ((__force snd_pcm_format_t) 40) /* in three bytes */
 233 #define SNDRV_PCM_FORMAT_S18_3BE        ((__force snd_pcm_format_t) 41) /* in three bytes */
 234 #define SNDRV_PCM_FORMAT_U18_3LE        ((__force snd_pcm_format_t) 42) /* in three bytes */
 235 #define SNDRV_PCM_FORMAT_U18_3BE        ((__force snd_pcm_format_t) 43) /* in three bytes */
 236 #define SNDRV_PCM_FORMAT_G723_24        ((__force snd_pcm_format_t) 44) /* 8 samples in 3 bytes */
 237 #define SNDRV_PCM_FORMAT_G723_24_1B     ((__force snd_pcm_format_t) 45) /* 1 sample in 1 byte */
 238 #define SNDRV_PCM_FORMAT_G723_40        ((__force snd_pcm_format_t) 46) /* 8 Samples in 5 bytes */
 239 #define SNDRV_PCM_FORMAT_G723_40_1B     ((__force snd_pcm_format_t) 47) /* 1 sample in 1 byte */
 240 #define SNDRV_PCM_FORMAT_DSD_U8         ((__force snd_pcm_format_t) 48) /* DSD, 1-byte samples DSD (x8) */
 241 #define SNDRV_PCM_FORMAT_DSD_U16_LE     ((__force snd_pcm_format_t) 49) /* DSD, 2-byte samples DSD (x16), little endian */
 242 #define SNDRV_PCM_FORMAT_DSD_U32_LE     ((__force snd_pcm_format_t) 50) /* DSD, 4-byte samples DSD (x32), little endian */
 243 #define SNDRV_PCM_FORMAT_DSD_U16_BE     ((__force snd_pcm_format_t) 51) /* DSD, 2-byte samples DSD (x16), big endian */
 244 #define SNDRV_PCM_FORMAT_DSD_U32_BE     ((__force snd_pcm_format_t) 52) /* DSD, 4-byte samples DSD (x32), big endian */
 245 #define SNDRV_PCM_FORMAT_LAST           SNDRV_PCM_FORMAT_DSD_U32_BE
 246 #define SNDRV_PCM_FORMAT_FIRST          SNDRV_PCM_FORMAT_S8
 247 
 248 #ifdef SNDRV_LITTLE_ENDIAN
 249 #define SNDRV_PCM_FORMAT_S16            SNDRV_PCM_FORMAT_S16_LE
 250 #define SNDRV_PCM_FORMAT_U16            SNDRV_PCM_FORMAT_U16_LE
 251 #define SNDRV_PCM_FORMAT_S24            SNDRV_PCM_FORMAT_S24_LE
 252 #define SNDRV_PCM_FORMAT_U24            SNDRV_PCM_FORMAT_U24_LE
 253 #define SNDRV_PCM_FORMAT_S32            SNDRV_PCM_FORMAT_S32_LE
 254 #define SNDRV_PCM_FORMAT_U32            SNDRV_PCM_FORMAT_U32_LE
 255 #define SNDRV_PCM_FORMAT_FLOAT          SNDRV_PCM_FORMAT_FLOAT_LE
 256 #define SNDRV_PCM_FORMAT_FLOAT64        SNDRV_PCM_FORMAT_FLOAT64_LE
 257 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE
 258 #define SNDRV_PCM_FORMAT_S20            SNDRV_PCM_FORMAT_S20_LE
 259 #define SNDRV_PCM_FORMAT_U20            SNDRV_PCM_FORMAT_U20_LE
 260 #endif
 261 #ifdef SNDRV_BIG_ENDIAN
 262 #define SNDRV_PCM_FORMAT_S16            SNDRV_PCM_FORMAT_S16_BE
 263 #define SNDRV_PCM_FORMAT_U16            SNDRV_PCM_FORMAT_U16_BE
 264 #define SNDRV_PCM_FORMAT_S24            SNDRV_PCM_FORMAT_S24_BE
 265 #define SNDRV_PCM_FORMAT_U24            SNDRV_PCM_FORMAT_U24_BE
 266 #define SNDRV_PCM_FORMAT_S32            SNDRV_PCM_FORMAT_S32_BE
 267 #define SNDRV_PCM_FORMAT_U32            SNDRV_PCM_FORMAT_U32_BE
 268 #define SNDRV_PCM_FORMAT_FLOAT          SNDRV_PCM_FORMAT_FLOAT_BE
 269 #define SNDRV_PCM_FORMAT_FLOAT64        SNDRV_PCM_FORMAT_FLOAT64_BE
 270 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE
 271 #define SNDRV_PCM_FORMAT_S20            SNDRV_PCM_FORMAT_S20_BE
 272 #define SNDRV_PCM_FORMAT_U20            SNDRV_PCM_FORMAT_U20_BE
 273 #endif
 274 
 275 typedef int __bitwise snd_pcm_subformat_t;
 276 #define SNDRV_PCM_SUBFORMAT_STD         ((__force snd_pcm_subformat_t) 0)
 277 #define SNDRV_PCM_SUBFORMAT_LAST        SNDRV_PCM_SUBFORMAT_STD
 278 
 279 #define SNDRV_PCM_INFO_MMAP             0x00000001      /* hardware supports mmap */
 280 #define SNDRV_PCM_INFO_MMAP_VALID       0x00000002      /* period data are valid during transfer */
 281 #define SNDRV_PCM_INFO_DOUBLE           0x00000004      /* Double buffering needed for PCM start/stop */
 282 #define SNDRV_PCM_INFO_BATCH            0x00000010      /* double buffering */
 283 #define SNDRV_PCM_INFO_SYNC_APPLPTR     0x00000020      /* need the explicit sync of appl_ptr update */
 284 #define SNDRV_PCM_INFO_INTERLEAVED      0x00000100      /* channels are interleaved */
 285 #define SNDRV_PCM_INFO_NONINTERLEAVED   0x00000200      /* channels are not interleaved */
 286 #define SNDRV_PCM_INFO_COMPLEX          0x00000400      /* complex frame organization (mmap only) */
 287 #define SNDRV_PCM_INFO_BLOCK_TRANSFER   0x00010000      /* hardware transfer block of samples */
 288 #define SNDRV_PCM_INFO_OVERRANGE        0x00020000      /* hardware supports ADC (capture) overrange detection */
 289 #define SNDRV_PCM_INFO_RESUME           0x00040000      /* hardware supports stream resume after suspend */
 290 #define SNDRV_PCM_INFO_PAUSE            0x00080000      /* pause ioctl is supported */
 291 #define SNDRV_PCM_INFO_HALF_DUPLEX      0x00100000      /* only half duplex */
 292 #define SNDRV_PCM_INFO_JOINT_DUPLEX     0x00200000      /* playback and capture stream are somewhat correlated */
 293 #define SNDRV_PCM_INFO_SYNC_START       0x00400000      /* pcm support some kind of sync go */
 294 #define SNDRV_PCM_INFO_NO_PERIOD_WAKEUP 0x00800000      /* period wakeup can be disabled */
 295 #define SNDRV_PCM_INFO_HAS_WALL_CLOCK   0x01000000      /* (Deprecated)has audio wall clock for audio/system time sync */
 296 #define SNDRV_PCM_INFO_HAS_LINK_ATIME              0x01000000  /* report hardware link audio time, reset on startup */
 297 #define SNDRV_PCM_INFO_HAS_LINK_ABSOLUTE_ATIME     0x02000000  /* report absolute hardware link audio time, not reset on startup */
 298 #define SNDRV_PCM_INFO_HAS_LINK_ESTIMATED_ATIME    0x04000000  /* report estimated link audio time */
 299 #define SNDRV_PCM_INFO_HAS_LINK_SYNCHRONIZED_ATIME 0x08000000  /* report synchronized audio/system time */
 300 
 301 #define SNDRV_PCM_INFO_DRAIN_TRIGGER    0x40000000              /* internal kernel flag - trigger in drain */
 302 #define SNDRV_PCM_INFO_FIFO_IN_FRAMES   0x80000000      /* internal kernel flag - FIFO size is in frames */
 303 
 304 
 305 
 306 typedef int __bitwise snd_pcm_state_t;
 307 #define SNDRV_PCM_STATE_OPEN            ((__force snd_pcm_state_t) 0) /* stream is open */
 308 #define SNDRV_PCM_STATE_SETUP           ((__force snd_pcm_state_t) 1) /* stream has a setup */
 309 #define SNDRV_PCM_STATE_PREPARED        ((__force snd_pcm_state_t) 2) /* stream is ready to start */
 310 #define SNDRV_PCM_STATE_RUNNING         ((__force snd_pcm_state_t) 3) /* stream is running */
 311 #define SNDRV_PCM_STATE_XRUN            ((__force snd_pcm_state_t) 4) /* stream reached an xrun */
 312 #define SNDRV_PCM_STATE_DRAINING        ((__force snd_pcm_state_t) 5) /* stream is draining */
 313 #define SNDRV_PCM_STATE_PAUSED          ((__force snd_pcm_state_t) 6) /* stream is paused */
 314 #define SNDRV_PCM_STATE_SUSPENDED       ((__force snd_pcm_state_t) 7) /* hardware is suspended */
 315 #define SNDRV_PCM_STATE_DISCONNECTED    ((__force snd_pcm_state_t) 8) /* hardware is disconnected */
 316 #define SNDRV_PCM_STATE_LAST            SNDRV_PCM_STATE_DISCONNECTED
 317 
 318 enum {
 319         SNDRV_PCM_MMAP_OFFSET_DATA = 0x00000000,
 320         SNDRV_PCM_MMAP_OFFSET_STATUS = 0x80000000,
 321         SNDRV_PCM_MMAP_OFFSET_CONTROL = 0x81000000,
 322 };
 323 
 324 union snd_pcm_sync_id {
 325         unsigned char id[16];
 326         unsigned short id16[8];
 327         unsigned int id32[4];
 328 };
 329 
 330 struct snd_pcm_info {
 331         unsigned int device;            /* RO/WR (control): device number */
 332         unsigned int subdevice;         /* RO/WR (control): subdevice number */
 333         int stream;                     /* RO/WR (control): stream direction */
 334         int card;                       /* R: card number */
 335         unsigned char id[64];           /* ID (user selectable) */
 336         unsigned char name[80];         /* name of this device */
 337         unsigned char subname[32];      /* subdevice name */
 338         int dev_class;                  /* SNDRV_PCM_CLASS_* */
 339         int dev_subclass;               /* SNDRV_PCM_SUBCLASS_* */
 340         unsigned int subdevices_count;
 341         unsigned int subdevices_avail;
 342         union snd_pcm_sync_id sync;     /* hardware synchronization ID */
 343         unsigned char reserved[64];     /* reserved for future... */
 344 };
 345 
 346 typedef int snd_pcm_hw_param_t;
 347 #define SNDRV_PCM_HW_PARAM_ACCESS       0       /* Access type */
 348 #define SNDRV_PCM_HW_PARAM_FORMAT       1       /* Format */
 349 #define SNDRV_PCM_HW_PARAM_SUBFORMAT    2       /* Subformat */
 350 #define SNDRV_PCM_HW_PARAM_FIRST_MASK   SNDRV_PCM_HW_PARAM_ACCESS
 351 #define SNDRV_PCM_HW_PARAM_LAST_MASK    SNDRV_PCM_HW_PARAM_SUBFORMAT
 352 
 353 #define SNDRV_PCM_HW_PARAM_SAMPLE_BITS  8       /* Bits per sample */
 354 #define SNDRV_PCM_HW_PARAM_FRAME_BITS   9       /* Bits per frame */
 355 #define SNDRV_PCM_HW_PARAM_CHANNELS     10      /* Channels */
 356 #define SNDRV_PCM_HW_PARAM_RATE         11      /* Approx rate */
 357 #define SNDRV_PCM_HW_PARAM_PERIOD_TIME  12      /* Approx distance between
 358                                                  * interrupts in us
 359                                                  */
 360 #define SNDRV_PCM_HW_PARAM_PERIOD_SIZE  13      /* Approx frames between
 361                                                  * interrupts
 362                                                  */
 363 #define SNDRV_PCM_HW_PARAM_PERIOD_BYTES 14      /* Approx bytes between
 364                                                  * interrupts
 365                                                  */
 366 #define SNDRV_PCM_HW_PARAM_PERIODS      15      /* Approx interrupts per
 367                                                  * buffer
 368                                                  */
 369 #define SNDRV_PCM_HW_PARAM_BUFFER_TIME  16      /* Approx duration of buffer
 370                                                  * in us
 371                                                  */
 372 #define SNDRV_PCM_HW_PARAM_BUFFER_SIZE  17      /* Size of buffer in frames */
 373 #define SNDRV_PCM_HW_PARAM_BUFFER_BYTES 18      /* Size of buffer in bytes */
 374 #define SNDRV_PCM_HW_PARAM_TICK_TIME    19      /* Approx tick duration in us */
 375 #define SNDRV_PCM_HW_PARAM_FIRST_INTERVAL       SNDRV_PCM_HW_PARAM_SAMPLE_BITS
 376 #define SNDRV_PCM_HW_PARAM_LAST_INTERVAL        SNDRV_PCM_HW_PARAM_TICK_TIME
 377 
 378 #define SNDRV_PCM_HW_PARAMS_NORESAMPLE  (1<<0)  /* avoid rate resampling */
 379 #define SNDRV_PCM_HW_PARAMS_EXPORT_BUFFER       (1<<1)  /* export buffer */
 380 #define SNDRV_PCM_HW_PARAMS_NO_PERIOD_WAKEUP    (1<<2)  /* disable period wakeups */
 381 
 382 struct snd_interval {
 383         unsigned int min, max;
 384         unsigned int openmin:1,
 385                      openmax:1,
 386                      integer:1,
 387                      empty:1;
 388 };
 389 
 390 #define SNDRV_MASK_MAX  256
 391 
 392 struct snd_mask {
 393         __u32 bits[(SNDRV_MASK_MAX+31)/32];
 394 };
 395 
 396 struct snd_pcm_hw_params {
 397         unsigned int flags;
 398         struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK -
 399                                SNDRV_PCM_HW_PARAM_FIRST_MASK + 1];
 400         struct snd_mask mres[5];        /* reserved masks */
 401         struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL -
 402                                         SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];
 403         struct snd_interval ires[9];    /* reserved intervals */
 404         unsigned int rmask;             /* W: requested masks */
 405         unsigned int cmask;             /* R: changed masks */
 406         unsigned int info;              /* R: Info flags for returned setup */
 407         unsigned int msbits;            /* R: used most significant bits */
 408         unsigned int rate_num;          /* R: rate numerator */
 409         unsigned int rate_den;          /* R: rate denominator */
 410         snd_pcm_uframes_t fifo_size;    /* R: chip FIFO size in frames */
 411         unsigned char reserved[64];     /* reserved for future */
 412 };
 413 
 414 enum {
 415         SNDRV_PCM_TSTAMP_NONE = 0,
 416         SNDRV_PCM_TSTAMP_ENABLE,
 417         SNDRV_PCM_TSTAMP_LAST = SNDRV_PCM_TSTAMP_ENABLE,
 418 };
 419 
 420 struct snd_pcm_sw_params {
 421         int tstamp_mode;                        /* timestamp mode */
 422         unsigned int period_step;
 423         unsigned int sleep_min;                 /* min ticks to sleep */
 424         snd_pcm_uframes_t avail_min;            /* min avail frames for wakeup */
 425         snd_pcm_uframes_t xfer_align;           /* obsolete: xfer size need to be a multiple */
 426         snd_pcm_uframes_t start_threshold;      /* min hw_avail frames for automatic start */
 427         snd_pcm_uframes_t stop_threshold;       /* min avail frames for automatic stop */
 428         snd_pcm_uframes_t silence_threshold;    /* min distance from noise for silence filling */
 429         snd_pcm_uframes_t silence_size;         /* silence block size */
 430         snd_pcm_uframes_t boundary;             /* pointers wrap point */
 431         unsigned int proto;                     /* protocol version */
 432         unsigned int tstamp_type;               /* timestamp type (req. proto >= 2.0.12) */
 433         unsigned char reserved[56];             /* reserved for future */
 434 };
 435 
 436 struct snd_pcm_channel_info {
 437         unsigned int channel;
 438         __kernel_off_t offset;          /* mmap offset */
 439         unsigned int first;             /* offset to first sample in bits */
 440         unsigned int step;              /* samples distance in bits */
 441 };
 442 
 443 enum {
 444         /*
 445          *  first definition for backwards compatibility only,
 446          *  maps to wallclock/link time for HDAudio playback and DEFAULT/DMA time for everything else
 447          */
 448         SNDRV_PCM_AUDIO_TSTAMP_TYPE_COMPAT = 0,
 449 
 450         /* timestamp definitions */
 451         SNDRV_PCM_AUDIO_TSTAMP_TYPE_DEFAULT = 1,           /* DMA time, reported as per hw_ptr */
 452         SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK = 2,              /* link time reported by sample or wallclock counter, reset on startup */
 453         SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_ABSOLUTE = 3,     /* link time reported by sample or wallclock counter, not reset on startup */
 454         SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_ESTIMATED = 4,    /* link time estimated indirectly */
 455         SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_SYNCHRONIZED = 5, /* link time synchronized with system time */
 456         SNDRV_PCM_AUDIO_TSTAMP_TYPE_LAST = SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_SYNCHRONIZED
 457 };
 458 
 459 struct snd_pcm_status {
 460         snd_pcm_state_t state;          /* stream state */
 461         struct timespec trigger_tstamp; /* time when stream was started/stopped/paused */
 462         struct timespec tstamp;         /* reference timestamp */
 463         snd_pcm_uframes_t appl_ptr;     /* appl ptr */
 464         snd_pcm_uframes_t hw_ptr;       /* hw ptr */
 465         snd_pcm_sframes_t delay;        /* current delay in frames */
 466         snd_pcm_uframes_t avail;        /* number of frames available */
 467         snd_pcm_uframes_t avail_max;    /* max frames available on hw since last status */
 468         snd_pcm_uframes_t overrange;    /* count of ADC (capture) overrange detections from last status */
 469         snd_pcm_state_t suspended_state; /* suspended stream state */
 470         __u32 audio_tstamp_data;         /* needed for 64-bit alignment, used for configs/report to/from userspace */
 471         struct timespec audio_tstamp;   /* sample counter, wall clock, PHC or on-demand sync'ed */
 472         struct timespec driver_tstamp;  /* useful in case reference system tstamp is reported with delay */
 473         __u32 audio_tstamp_accuracy;    /* in ns units, only valid if indicated in audio_tstamp_data */
 474         unsigned char reserved[52-2*sizeof(struct timespec)]; /* must be filled with zero */
 475 };
 476 
 477 struct snd_pcm_mmap_status {
 478         snd_pcm_state_t state;          /* RO: state - SNDRV_PCM_STATE_XXXX */
 479         int pad1;                       /* Needed for 64 bit alignment */
 480         snd_pcm_uframes_t hw_ptr;       /* RO: hw ptr (0...boundary-1) */
 481         struct timespec tstamp;         /* Timestamp */
 482         snd_pcm_state_t suspended_state; /* RO: suspended stream state */
 483         struct timespec audio_tstamp;   /* from sample counter or wall clock */
 484 };
 485 
 486 struct snd_pcm_mmap_control {
 487         snd_pcm_uframes_t appl_ptr;     /* RW: appl ptr (0...boundary-1) */
 488         snd_pcm_uframes_t avail_min;    /* RW: min available frames for wakeup */
 489 };
 490 
 491 #define SNDRV_PCM_SYNC_PTR_HWSYNC       (1<<0)  /* execute hwsync */
 492 #define SNDRV_PCM_SYNC_PTR_APPL         (1<<1)  /* get appl_ptr from driver (r/w op) */
 493 #define SNDRV_PCM_SYNC_PTR_AVAIL_MIN    (1<<2)  /* get avail_min from driver */
 494 
 495 struct snd_pcm_sync_ptr {
 496         unsigned int flags;
 497         union {
 498                 struct snd_pcm_mmap_status status;
 499                 unsigned char reserved[64];
 500         } s;
 501         union {
 502                 struct snd_pcm_mmap_control control;
 503                 unsigned char reserved[64];
 504         } c;
 505 };
 506 
 507 struct snd_xferi {
 508         snd_pcm_sframes_t result;
 509         void __user *buf;
 510         snd_pcm_uframes_t frames;
 511 };
 512 
 513 struct snd_xfern {
 514         snd_pcm_sframes_t result;
 515         void __user * __user *bufs;
 516         snd_pcm_uframes_t frames;
 517 };
 518 
 519 enum {
 520         SNDRV_PCM_TSTAMP_TYPE_GETTIMEOFDAY = 0, /* gettimeofday equivalent */
 521         SNDRV_PCM_TSTAMP_TYPE_MONOTONIC,        /* posix_clock_monotonic equivalent */
 522         SNDRV_PCM_TSTAMP_TYPE_MONOTONIC_RAW,    /* monotonic_raw (no NTP) */
 523         SNDRV_PCM_TSTAMP_TYPE_LAST = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC_RAW,
 524 };
 525 
 526 /* channel positions */
 527 enum {
 528         SNDRV_CHMAP_UNKNOWN = 0,
 529         SNDRV_CHMAP_NA,         /* N/A, silent */
 530         SNDRV_CHMAP_MONO,       /* mono stream */
 531         /* this follows the alsa-lib mixer channel value + 3 */
 532         SNDRV_CHMAP_FL,         /* front left */
 533         SNDRV_CHMAP_FR,         /* front right */
 534         SNDRV_CHMAP_RL,         /* rear left */
 535         SNDRV_CHMAP_RR,         /* rear right */
 536         SNDRV_CHMAP_FC,         /* front center */
 537         SNDRV_CHMAP_LFE,        /* LFE */
 538         SNDRV_CHMAP_SL,         /* side left */
 539         SNDRV_CHMAP_SR,         /* side right */
 540         SNDRV_CHMAP_RC,         /* rear center */
 541         /* new definitions */
 542         SNDRV_CHMAP_FLC,        /* front left center */
 543         SNDRV_CHMAP_FRC,        /* front right center */
 544         SNDRV_CHMAP_RLC,        /* rear left center */
 545         SNDRV_CHMAP_RRC,        /* rear right center */
 546         SNDRV_CHMAP_FLW,        /* front left wide */
 547         SNDRV_CHMAP_FRW,        /* front right wide */
 548         SNDRV_CHMAP_FLH,        /* front left high */
 549         SNDRV_CHMAP_FCH,        /* front center high */
 550         SNDRV_CHMAP_FRH,        /* front right high */
 551         SNDRV_CHMAP_TC,         /* top center */
 552         SNDRV_CHMAP_TFL,        /* top front left */
 553         SNDRV_CHMAP_TFR,        /* top front right */
 554         SNDRV_CHMAP_TFC,        /* top front center */
 555         SNDRV_CHMAP_TRL,        /* top rear left */
 556         SNDRV_CHMAP_TRR,        /* top rear right */
 557         SNDRV_CHMAP_TRC,        /* top rear center */
 558         /* new definitions for UAC2 */
 559         SNDRV_CHMAP_TFLC,       /* top front left center */
 560         SNDRV_CHMAP_TFRC,       /* top front right center */
 561         SNDRV_CHMAP_TSL,        /* top side left */
 562         SNDRV_CHMAP_TSR,        /* top side right */
 563         SNDRV_CHMAP_LLFE,       /* left LFE */
 564         SNDRV_CHMAP_RLFE,       /* right LFE */
 565         SNDRV_CHMAP_BC,         /* bottom center */
 566         SNDRV_CHMAP_BLC,        /* bottom left center */
 567         SNDRV_CHMAP_BRC,        /* bottom right center */
 568         SNDRV_CHMAP_LAST = SNDRV_CHMAP_BRC,
 569 };
 570 
 571 #define SNDRV_CHMAP_POSITION_MASK       0xffff
 572 #define SNDRV_CHMAP_PHASE_INVERSE       (0x01 << 16)
 573 #define SNDRV_CHMAP_DRIVER_SPEC         (0x02 << 16)
 574 
 575 #define SNDRV_PCM_IOCTL_PVERSION        _IOR('A', 0x00, int)
 576 #define SNDRV_PCM_IOCTL_INFO            _IOR('A', 0x01, struct snd_pcm_info)
 577 #define SNDRV_PCM_IOCTL_TSTAMP          _IOW('A', 0x02, int)
 578 #define SNDRV_PCM_IOCTL_TTSTAMP         _IOW('A', 0x03, int)
 579 #define SNDRV_PCM_IOCTL_USER_PVERSION   _IOW('A', 0x04, int)
 580 #define SNDRV_PCM_IOCTL_HW_REFINE       _IOWR('A', 0x10, struct snd_pcm_hw_params)
 581 #define SNDRV_PCM_IOCTL_HW_PARAMS       _IOWR('A', 0x11, struct snd_pcm_hw_params)
 582 #define SNDRV_PCM_IOCTL_HW_FREE         _IO('A', 0x12)
 583 #define SNDRV_PCM_IOCTL_SW_PARAMS       _IOWR('A', 0x13, struct snd_pcm_sw_params)
 584 #define SNDRV_PCM_IOCTL_STATUS          _IOR('A', 0x20, struct snd_pcm_status)
 585 #define SNDRV_PCM_IOCTL_DELAY           _IOR('A', 0x21, snd_pcm_sframes_t)
 586 #define SNDRV_PCM_IOCTL_HWSYNC          _IO('A', 0x22)
 587 #define SNDRV_PCM_IOCTL_SYNC_PTR        _IOWR('A', 0x23, struct snd_pcm_sync_ptr)
 588 #define SNDRV_PCM_IOCTL_STATUS_EXT      _IOWR('A', 0x24, struct snd_pcm_status)
 589 #define SNDRV_PCM_IOCTL_CHANNEL_INFO    _IOR('A', 0x32, struct snd_pcm_channel_info)
 590 #define SNDRV_PCM_IOCTL_PREPARE         _IO('A', 0x40)
 591 #define SNDRV_PCM_IOCTL_RESET           _IO('A', 0x41)
 592 #define SNDRV_PCM_IOCTL_START           _IO('A', 0x42)
 593 #define SNDRV_PCM_IOCTL_DROP            _IO('A', 0x43)
 594 #define SNDRV_PCM_IOCTL_DRAIN           _IO('A', 0x44)
 595 #define SNDRV_PCM_IOCTL_PAUSE           _IOW('A', 0x45, int)
 596 #define SNDRV_PCM_IOCTL_REWIND          _IOW('A', 0x46, snd_pcm_uframes_t)
 597 #define SNDRV_PCM_IOCTL_RESUME          _IO('A', 0x47)
 598 #define SNDRV_PCM_IOCTL_XRUN            _IO('A', 0x48)
 599 #define SNDRV_PCM_IOCTL_FORWARD         _IOW('A', 0x49, snd_pcm_uframes_t)
 600 #define SNDRV_PCM_IOCTL_WRITEI_FRAMES   _IOW('A', 0x50, struct snd_xferi)
 601 #define SNDRV_PCM_IOCTL_READI_FRAMES    _IOR('A', 0x51, struct snd_xferi)
 602 #define SNDRV_PCM_IOCTL_WRITEN_FRAMES   _IOW('A', 0x52, struct snd_xfern)
 603 #define SNDRV_PCM_IOCTL_READN_FRAMES    _IOR('A', 0x53, struct snd_xfern)
 604 #define SNDRV_PCM_IOCTL_LINK            _IOW('A', 0x60, int)
 605 #define SNDRV_PCM_IOCTL_UNLINK          _IO('A', 0x61)
 606 
 607 /*****************************************************************************
 608  *                                                                           *
 609  *                            MIDI v1.0 interface                            *
 610  *                                                                           *
 611  *****************************************************************************/
 612 
 613 /*
 614  *  Raw MIDI section - /dev/snd/midi??
 615  */
 616 
 617 #define SNDRV_RAWMIDI_VERSION           SNDRV_PROTOCOL_VERSION(2, 0, 0)
 618 
 619 enum {
 620         SNDRV_RAWMIDI_STREAM_OUTPUT = 0,
 621         SNDRV_RAWMIDI_STREAM_INPUT,
 622         SNDRV_RAWMIDI_STREAM_LAST = SNDRV_RAWMIDI_STREAM_INPUT,
 623 };
 624 
 625 #define SNDRV_RAWMIDI_INFO_OUTPUT               0x00000001
 626 #define SNDRV_RAWMIDI_INFO_INPUT                0x00000002
 627 #define SNDRV_RAWMIDI_INFO_DUPLEX               0x00000004
 628 
 629 struct snd_rawmidi_info {
 630         unsigned int device;            /* RO/WR (control): device number */
 631         unsigned int subdevice;         /* RO/WR (control): subdevice number */
 632         int stream;                     /* WR: stream */
 633         int card;                       /* R: card number */
 634         unsigned int flags;             /* SNDRV_RAWMIDI_INFO_XXXX */
 635         unsigned char id[64];           /* ID (user selectable) */
 636         unsigned char name[80];         /* name of device */
 637         unsigned char subname[32];      /* name of active or selected subdevice */
 638         unsigned int subdevices_count;
 639         unsigned int subdevices_avail;
 640         unsigned char reserved[64];     /* reserved for future use */
 641 };
 642 
 643 struct snd_rawmidi_params {
 644         int stream;
 645         size_t buffer_size;             /* queue size in bytes */
 646         size_t avail_min;               /* minimum avail bytes for wakeup */
 647         unsigned int no_active_sensing: 1; /* do not send active sensing byte in close() */
 648         unsigned char reserved[16];     /* reserved for future use */
 649 };
 650 
 651 struct snd_rawmidi_status {
 652         int stream;
 653         struct timespec tstamp;         /* Timestamp */
 654         size_t avail;                   /* available bytes */
 655         size_t xruns;                   /* count of overruns since last status (in bytes) */
 656         unsigned char reserved[16];     /* reserved for future use */
 657 };
 658 
 659 #define SNDRV_RAWMIDI_IOCTL_PVERSION    _IOR('W', 0x00, int)
 660 #define SNDRV_RAWMIDI_IOCTL_INFO        _IOR('W', 0x01, struct snd_rawmidi_info)
 661 #define SNDRV_RAWMIDI_IOCTL_PARAMS      _IOWR('W', 0x10, struct snd_rawmidi_params)
 662 #define SNDRV_RAWMIDI_IOCTL_STATUS      _IOWR('W', 0x20, struct snd_rawmidi_status)
 663 #define SNDRV_RAWMIDI_IOCTL_DROP        _IOW('W', 0x30, int)
 664 #define SNDRV_RAWMIDI_IOCTL_DRAIN       _IOW('W', 0x31, int)
 665 
 666 /*
 667  *  Timer section - /dev/snd/timer
 668  */
 669 
 670 #define SNDRV_TIMER_VERSION             SNDRV_PROTOCOL_VERSION(2, 0, 6)
 671 
 672 enum {
 673         SNDRV_TIMER_CLASS_NONE = -1,
 674         SNDRV_TIMER_CLASS_SLAVE = 0,
 675         SNDRV_TIMER_CLASS_GLOBAL,
 676         SNDRV_TIMER_CLASS_CARD,
 677         SNDRV_TIMER_CLASS_PCM,
 678         SNDRV_TIMER_CLASS_LAST = SNDRV_TIMER_CLASS_PCM,
 679 };
 680 
 681 /* slave timer classes */
 682 enum {
 683         SNDRV_TIMER_SCLASS_NONE = 0,
 684         SNDRV_TIMER_SCLASS_APPLICATION,
 685         SNDRV_TIMER_SCLASS_SEQUENCER,           /* alias */
 686         SNDRV_TIMER_SCLASS_OSS_SEQUENCER,       /* alias */
 687         SNDRV_TIMER_SCLASS_LAST = SNDRV_TIMER_SCLASS_OSS_SEQUENCER,
 688 };
 689 
 690 /* global timers (device member) */
 691 #define SNDRV_TIMER_GLOBAL_SYSTEM       0
 692 #define SNDRV_TIMER_GLOBAL_RTC          1       /* unused */
 693 #define SNDRV_TIMER_GLOBAL_HPET         2
 694 #define SNDRV_TIMER_GLOBAL_HRTIMER      3
 695 
 696 /* info flags */
 697 #define SNDRV_TIMER_FLG_SLAVE           (1<<0)  /* cannot be controlled */
 698 
 699 struct snd_timer_id {
 700         int dev_class;
 701         int dev_sclass;
 702         int card;
 703         int device;
 704         int subdevice;
 705 };
 706 
 707 struct snd_timer_ginfo {
 708         struct snd_timer_id tid;        /* requested timer ID */
 709         unsigned int flags;             /* timer flags - SNDRV_TIMER_FLG_* */
 710         int card;                       /* card number */
 711         unsigned char id[64];           /* timer identification */
 712         unsigned char name[80];         /* timer name */
 713         unsigned long reserved0;        /* reserved for future use */
 714         unsigned long resolution;       /* average period resolution in ns */
 715         unsigned long resolution_min;   /* minimal period resolution in ns */
 716         unsigned long resolution_max;   /* maximal period resolution in ns */
 717         unsigned int clients;           /* active timer clients */
 718         unsigned char reserved[32];
 719 };
 720 
 721 struct snd_timer_gparams {
 722         struct snd_timer_id tid;        /* requested timer ID */
 723         unsigned long period_num;       /* requested precise period duration (in seconds) - numerator */
 724         unsigned long period_den;       /* requested precise period duration (in seconds) - denominator */
 725         unsigned char reserved[32];
 726 };
 727 
 728 struct snd_timer_gstatus {
 729         struct snd_timer_id tid;        /* requested timer ID */
 730         unsigned long resolution;       /* current period resolution in ns */
 731         unsigned long resolution_num;   /* precise current period resolution (in seconds) - numerator */
 732         unsigned long resolution_den;   /* precise current period resolution (in seconds) - denominator */
 733         unsigned char reserved[32];
 734 };
 735 
 736 struct snd_timer_select {
 737         struct snd_timer_id id; /* bind to timer ID */
 738         unsigned char reserved[32];     /* reserved */
 739 };
 740 
 741 struct snd_timer_info {
 742         unsigned int flags;             /* timer flags - SNDRV_TIMER_FLG_* */
 743         int card;                       /* card number */
 744         unsigned char id[64];           /* timer identificator */
 745         unsigned char name[80];         /* timer name */
 746         unsigned long reserved0;        /* reserved for future use */
 747         unsigned long resolution;       /* average period resolution in ns */
 748         unsigned char reserved[64];     /* reserved */
 749 };
 750 
 751 #define SNDRV_TIMER_PSFLG_AUTO          (1<<0)  /* auto start, otherwise one-shot */
 752 #define SNDRV_TIMER_PSFLG_EXCLUSIVE     (1<<1)  /* exclusive use, precise start/stop/pause/continue */
 753 #define SNDRV_TIMER_PSFLG_EARLY_EVENT   (1<<2)  /* write early event to the poll queue */
 754 
 755 struct snd_timer_params {
 756         unsigned int flags;             /* flags - SNDRV_TIMER_PSFLG_* */
 757         unsigned int ticks;             /* requested resolution in ticks */
 758         unsigned int queue_size;        /* total size of queue (32-1024) */
 759         unsigned int reserved0;         /* reserved, was: failure locations */
 760         unsigned int filter;            /* event filter (bitmask of SNDRV_TIMER_EVENT_*) */
 761         unsigned char reserved[60];     /* reserved */
 762 };
 763 
 764 struct snd_timer_status {
 765         struct timespec tstamp;         /* Timestamp - last update */
 766         unsigned int resolution;        /* current period resolution in ns */
 767         unsigned int lost;              /* counter of master tick lost */
 768         unsigned int overrun;           /* count of read queue overruns */
 769         unsigned int queue;             /* used queue size */
 770         unsigned char reserved[64];     /* reserved */
 771 };
 772 
 773 #define SNDRV_TIMER_IOCTL_PVERSION      _IOR('T', 0x00, int)
 774 #define SNDRV_TIMER_IOCTL_NEXT_DEVICE   _IOWR('T', 0x01, struct snd_timer_id)
 775 #define SNDRV_TIMER_IOCTL_TREAD         _IOW('T', 0x02, int)
 776 #define SNDRV_TIMER_IOCTL_GINFO         _IOWR('T', 0x03, struct snd_timer_ginfo)
 777 #define SNDRV_TIMER_IOCTL_GPARAMS       _IOW('T', 0x04, struct snd_timer_gparams)
 778 #define SNDRV_TIMER_IOCTL_GSTATUS       _IOWR('T', 0x05, struct snd_timer_gstatus)
 779 #define SNDRV_TIMER_IOCTL_SELECT        _IOW('T', 0x10, struct snd_timer_select)
 780 #define SNDRV_TIMER_IOCTL_INFO          _IOR('T', 0x11, struct snd_timer_info)
 781 #define SNDRV_TIMER_IOCTL_PARAMS        _IOW('T', 0x12, struct snd_timer_params)
 782 #define SNDRV_TIMER_IOCTL_STATUS        _IOR('T', 0x14, struct snd_timer_status)
 783 /* The following four ioctls are changed since 1.0.9 due to confliction */
 784 #define SNDRV_TIMER_IOCTL_START         _IO('T', 0xa0)
 785 #define SNDRV_TIMER_IOCTL_STOP          _IO('T', 0xa1)
 786 #define SNDRV_TIMER_IOCTL_CONTINUE      _IO('T', 0xa2)
 787 #define SNDRV_TIMER_IOCTL_PAUSE         _IO('T', 0xa3)
 788 
 789 struct snd_timer_read {
 790         unsigned int resolution;
 791         unsigned int ticks;
 792 };
 793 
 794 enum {
 795         SNDRV_TIMER_EVENT_RESOLUTION = 0,       /* val = resolution in ns */
 796         SNDRV_TIMER_EVENT_TICK,                 /* val = ticks */
 797         SNDRV_TIMER_EVENT_START,                /* val = resolution in ns */
 798         SNDRV_TIMER_EVENT_STOP,                 /* val = 0 */
 799         SNDRV_TIMER_EVENT_CONTINUE,             /* val = resolution in ns */
 800         SNDRV_TIMER_EVENT_PAUSE,                /* val = 0 */
 801         SNDRV_TIMER_EVENT_EARLY,                /* val = 0, early event */
 802         SNDRV_TIMER_EVENT_SUSPEND,              /* val = 0 */
 803         SNDRV_TIMER_EVENT_RESUME,               /* val = resolution in ns */
 804         /* master timer events for slave timer instances */
 805         SNDRV_TIMER_EVENT_MSTART = SNDRV_TIMER_EVENT_START + 10,
 806         SNDRV_TIMER_EVENT_MSTOP = SNDRV_TIMER_EVENT_STOP + 10,
 807         SNDRV_TIMER_EVENT_MCONTINUE = SNDRV_TIMER_EVENT_CONTINUE + 10,
 808         SNDRV_TIMER_EVENT_MPAUSE = SNDRV_TIMER_EVENT_PAUSE + 10,
 809         SNDRV_TIMER_EVENT_MSUSPEND = SNDRV_TIMER_EVENT_SUSPEND + 10,
 810         SNDRV_TIMER_EVENT_MRESUME = SNDRV_TIMER_EVENT_RESUME + 10,
 811 };
 812 
 813 struct snd_timer_tread {
 814         int event;
 815         struct timespec tstamp;
 816         unsigned int val;
 817 };
 818 
 819 /****************************************************************************
 820  *                                                                          *
 821  *        Section for driver control interface - /dev/snd/control?          *
 822  *                                                                          *
 823  ****************************************************************************/
 824 
 825 #define SNDRV_CTL_VERSION               SNDRV_PROTOCOL_VERSION(2, 0, 7)
 826 
 827 struct snd_ctl_card_info {
 828         int card;                       /* card number */
 829         int pad;                        /* reserved for future (was type) */
 830         unsigned char id[16];           /* ID of card (user selectable) */
 831         unsigned char driver[16];       /* Driver name */
 832         unsigned char name[32];         /* Short name of soundcard */
 833         unsigned char longname[80];     /* name + info text about soundcard */
 834         unsigned char reserved_[16];    /* reserved for future (was ID of mixer) */
 835         unsigned char mixername[80];    /* visual mixer identification */
 836         unsigned char components[128];  /* card components / fine identification, delimited with one space (AC97 etc..) */
 837 };
 838 
 839 typedef int __bitwise snd_ctl_elem_type_t;
 840 #define SNDRV_CTL_ELEM_TYPE_NONE        ((__force snd_ctl_elem_type_t) 0) /* invalid */
 841 #define SNDRV_CTL_ELEM_TYPE_BOOLEAN     ((__force snd_ctl_elem_type_t) 1) /* boolean type */
 842 #define SNDRV_CTL_ELEM_TYPE_INTEGER     ((__force snd_ctl_elem_type_t) 2) /* integer type */
 843 #define SNDRV_CTL_ELEM_TYPE_ENUMERATED  ((__force snd_ctl_elem_type_t) 3) /* enumerated type */
 844 #define SNDRV_CTL_ELEM_TYPE_BYTES       ((__force snd_ctl_elem_type_t) 4) /* byte array */
 845 #define SNDRV_CTL_ELEM_TYPE_IEC958      ((__force snd_ctl_elem_type_t) 5) /* IEC958 (S/PDIF) setup */
 846 #define SNDRV_CTL_ELEM_TYPE_INTEGER64   ((__force snd_ctl_elem_type_t) 6) /* 64-bit integer type */
 847 #define SNDRV_CTL_ELEM_TYPE_LAST        SNDRV_CTL_ELEM_TYPE_INTEGER64
 848 
 849 typedef int __bitwise snd_ctl_elem_iface_t;
 850 #define SNDRV_CTL_ELEM_IFACE_CARD       ((__force snd_ctl_elem_iface_t) 0) /* global control */
 851 #define SNDRV_CTL_ELEM_IFACE_HWDEP      ((__force snd_ctl_elem_iface_t) 1) /* hardware dependent device */
 852 #define SNDRV_CTL_ELEM_IFACE_MIXER      ((__force snd_ctl_elem_iface_t) 2) /* virtual mixer device */
 853 #define SNDRV_CTL_ELEM_IFACE_PCM        ((__force snd_ctl_elem_iface_t) 3) /* PCM device */
 854 #define SNDRV_CTL_ELEM_IFACE_RAWMIDI    ((__force snd_ctl_elem_iface_t) 4) /* RawMidi device */
 855 #define SNDRV_CTL_ELEM_IFACE_TIMER      ((__force snd_ctl_elem_iface_t) 5) /* timer device */
 856 #define SNDRV_CTL_ELEM_IFACE_SEQUENCER  ((__force snd_ctl_elem_iface_t) 6) /* sequencer client */
 857 #define SNDRV_CTL_ELEM_IFACE_LAST       SNDRV_CTL_ELEM_IFACE_SEQUENCER
 858 
 859 #define SNDRV_CTL_ELEM_ACCESS_READ              (1<<0)
 860 #define SNDRV_CTL_ELEM_ACCESS_WRITE             (1<<1)
 861 #define SNDRV_CTL_ELEM_ACCESS_READWRITE         (SNDRV_CTL_ELEM_ACCESS_READ|SNDRV_CTL_ELEM_ACCESS_WRITE)
 862 #define SNDRV_CTL_ELEM_ACCESS_VOLATILE          (1<<2)  /* control value may be changed without a notification */
 863 #define SNDRV_CTL_ELEM_ACCESS_TIMESTAMP         (1<<3)  /* when was control changed */
 864 #define SNDRV_CTL_ELEM_ACCESS_TLV_READ          (1<<4)  /* TLV read is possible */
 865 #define SNDRV_CTL_ELEM_ACCESS_TLV_WRITE         (1<<5)  /* TLV write is possible */
 866 #define SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE     (SNDRV_CTL_ELEM_ACCESS_TLV_READ|SNDRV_CTL_ELEM_ACCESS_TLV_WRITE)
 867 #define SNDRV_CTL_ELEM_ACCESS_TLV_COMMAND       (1<<6)  /* TLV command is possible */
 868 #define SNDRV_CTL_ELEM_ACCESS_INACTIVE          (1<<8)  /* control does actually nothing, but may be updated */
 869 #define SNDRV_CTL_ELEM_ACCESS_LOCK              (1<<9)  /* write lock */
 870 #define SNDRV_CTL_ELEM_ACCESS_OWNER             (1<<10) /* write lock owner */
 871 #define SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK      (1<<28) /* kernel use a TLV callback */
 872 #define SNDRV_CTL_ELEM_ACCESS_USER              (1<<29) /* user space element */
 873 /* bits 30 and 31 are obsoleted (for indirect access) */
 874 
 875 /* for further details see the ACPI and PCI power management specification */
 876 #define SNDRV_CTL_POWER_D0              0x0000  /* full On */
 877 #define SNDRV_CTL_POWER_D1              0x0100  /* partial On */
 878 #define SNDRV_CTL_POWER_D2              0x0200  /* partial On */
 879 #define SNDRV_CTL_POWER_D3              0x0300  /* Off */
 880 #define SNDRV_CTL_POWER_D3hot           (SNDRV_CTL_POWER_D3|0x0000)     /* Off, with power */
 881 #define SNDRV_CTL_POWER_D3cold          (SNDRV_CTL_POWER_D3|0x0001)     /* Off, without power */
 882 
 883 #define SNDRV_CTL_ELEM_ID_NAME_MAXLEN   44
 884 
 885 struct snd_ctl_elem_id {
 886         unsigned int numid;             /* numeric identifier, zero = invalid */
 887         snd_ctl_elem_iface_t iface;     /* interface identifier */
 888         unsigned int device;            /* device/client number */
 889         unsigned int subdevice;         /* subdevice (substream) number */
 890         unsigned char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];              /* ASCII name of item */
 891         unsigned int index;             /* index of item */
 892 };
 893 
 894 struct snd_ctl_elem_list {
 895         unsigned int offset;            /* W: first element ID to get */
 896         unsigned int space;             /* W: count of element IDs to get */
 897         unsigned int used;              /* R: count of element IDs set */
 898         unsigned int count;             /* R: count of all elements */
 899         struct snd_ctl_elem_id __user *pids; /* R: IDs */
 900         unsigned char reserved[50];
 901 };
 902 
 903 struct snd_ctl_elem_info {
 904         struct snd_ctl_elem_id id;      /* W: element ID */
 905         snd_ctl_elem_type_t type;       /* R: value type - SNDRV_CTL_ELEM_TYPE_* */
 906         unsigned int access;            /* R: value access (bitmask) - SNDRV_CTL_ELEM_ACCESS_* */
 907         unsigned int count;             /* count of values */
 908         __kernel_pid_t owner;           /* owner's PID of this control */
 909         union {
 910                 struct {
 911                         long min;               /* R: minimum value */
 912                         long max;               /* R: maximum value */
 913                         long step;              /* R: step (0 variable) */
 914                 } integer;
 915                 struct {
 916                         long long min;          /* R: minimum value */
 917                         long long max;          /* R: maximum value */
 918                         long long step;         /* R: step (0 variable) */
 919                 } integer64;
 920                 struct {
 921                         unsigned int items;     /* R: number of items */
 922                         unsigned int item;      /* W: item number */
 923                         char name[64];          /* R: value name */
 924                         __u64 names_ptr;        /* W: names list (ELEM_ADD only) */
 925                         unsigned int names_length;
 926                 } enumerated;
 927                 unsigned char reserved[128];
 928         } value;
 929         union {
 930                 unsigned short d[4];            /* dimensions */
 931                 unsigned short *d_ptr;          /* indirect - obsoleted */
 932         } dimen;
 933         unsigned char reserved[64-4*sizeof(unsigned short)];
 934 };
 935 
 936 struct snd_ctl_elem_value {
 937         struct snd_ctl_elem_id id;      /* W: element ID */
 938         unsigned int indirect: 1;       /* W: indirect access - obsoleted */
 939         union {
 940                 union {
 941                         long value[128];
 942                         long *value_ptr;        /* obsoleted */
 943                 } integer;
 944                 union {
 945                         long long value[64];
 946                         long long *value_ptr;   /* obsoleted */
 947                 } integer64;
 948                 union {
 949                         unsigned int item[128];
 950                         unsigned int *item_ptr; /* obsoleted */
 951                 } enumerated;
 952                 union {
 953                         unsigned char data[512];
 954                         unsigned char *data_ptr;        /* obsoleted */
 955                 } bytes;
 956                 struct snd_aes_iec958 iec958;
 957         } value;                /* RO */
 958         struct timespec tstamp;
 959         unsigned char reserved[128-sizeof(struct timespec)];
 960 };
 961 
 962 struct snd_ctl_tlv {
 963         unsigned int numid;     /* control element numeric identification */
 964         unsigned int length;    /* in bytes aligned to 4 */
 965         unsigned int tlv[0];    /* first TLV */
 966 };
 967 
 968 #define SNDRV_CTL_IOCTL_PVERSION        _IOR('U', 0x00, int)
 969 #define SNDRV_CTL_IOCTL_CARD_INFO       _IOR('U', 0x01, struct snd_ctl_card_info)
 970 #define SNDRV_CTL_IOCTL_ELEM_LIST       _IOWR('U', 0x10, struct snd_ctl_elem_list)
 971 #define SNDRV_CTL_IOCTL_ELEM_INFO       _IOWR('U', 0x11, struct snd_ctl_elem_info)
 972 #define SNDRV_CTL_IOCTL_ELEM_READ       _IOWR('U', 0x12, struct snd_ctl_elem_value)
 973 #define SNDRV_CTL_IOCTL_ELEM_WRITE      _IOWR('U', 0x13, struct snd_ctl_elem_value)
 974 #define SNDRV_CTL_IOCTL_ELEM_LOCK       _IOW('U', 0x14, struct snd_ctl_elem_id)
 975 #define SNDRV_CTL_IOCTL_ELEM_UNLOCK     _IOW('U', 0x15, struct snd_ctl_elem_id)
 976 #define SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS _IOWR('U', 0x16, int)
 977 #define SNDRV_CTL_IOCTL_ELEM_ADD        _IOWR('U', 0x17, struct snd_ctl_elem_info)
 978 #define SNDRV_CTL_IOCTL_ELEM_REPLACE    _IOWR('U', 0x18, struct snd_ctl_elem_info)
 979 #define SNDRV_CTL_IOCTL_ELEM_REMOVE     _IOWR('U', 0x19, struct snd_ctl_elem_id)
 980 #define SNDRV_CTL_IOCTL_TLV_READ        _IOWR('U', 0x1a, struct snd_ctl_tlv)
 981 #define SNDRV_CTL_IOCTL_TLV_WRITE       _IOWR('U', 0x1b, struct snd_ctl_tlv)
 982 #define SNDRV_CTL_IOCTL_TLV_COMMAND     _IOWR('U', 0x1c, struct snd_ctl_tlv)
 983 #define SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE _IOWR('U', 0x20, int)
 984 #define SNDRV_CTL_IOCTL_HWDEP_INFO      _IOR('U', 0x21, struct snd_hwdep_info)
 985 #define SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE _IOR('U', 0x30, int)
 986 #define SNDRV_CTL_IOCTL_PCM_INFO        _IOWR('U', 0x31, struct snd_pcm_info)
 987 #define SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE _IOW('U', 0x32, int)
 988 #define SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE _IOWR('U', 0x40, int)
 989 #define SNDRV_CTL_IOCTL_RAWMIDI_INFO    _IOWR('U', 0x41, struct snd_rawmidi_info)
 990 #define SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE _IOW('U', 0x42, int)
 991 #define SNDRV_CTL_IOCTL_POWER           _IOWR('U', 0xd0, int)
 992 #define SNDRV_CTL_IOCTL_POWER_STATE     _IOR('U', 0xd1, int)
 993 
 994 /*
 995  *  Read interface.
 996  */
 997 
 998 enum sndrv_ctl_event_type {
 999         SNDRV_CTL_EVENT_ELEM = 0,
1000         SNDRV_CTL_EVENT_LAST = SNDRV_CTL_EVENT_ELEM,
1001 };
1002 
1003 #define SNDRV_CTL_EVENT_MASK_VALUE      (1<<0)  /* element value was changed */
1004 #define SNDRV_CTL_EVENT_MASK_INFO       (1<<1)  /* element info was changed */
1005 #define SNDRV_CTL_EVENT_MASK_ADD        (1<<2)  /* element was added */
1006 #define SNDRV_CTL_EVENT_MASK_TLV        (1<<3)  /* element TLV tree was changed */
1007 #define SNDRV_CTL_EVENT_MASK_REMOVE     (~0U)   /* element was removed */
1008 
1009 struct snd_ctl_event {
1010         int type;       /* event type - SNDRV_CTL_EVENT_* */
1011         union {
1012                 struct {
1013                         unsigned int mask;
1014                         struct snd_ctl_elem_id id;
1015                 } elem;
1016                 unsigned char data8[60];
1017         } data;
1018 };
1019 
1020 /*
1021  *  Control names
1022  */
1023 
1024 #define SNDRV_CTL_NAME_NONE                             ""
1025 #define SNDRV_CTL_NAME_PLAYBACK                         "Playback "
1026 #define SNDRV_CTL_NAME_CAPTURE                          "Capture "
1027 
1028 #define SNDRV_CTL_NAME_IEC958_NONE                      ""
1029 #define SNDRV_CTL_NAME_IEC958_SWITCH                    "Switch"
1030 #define SNDRV_CTL_NAME_IEC958_VOLUME                    "Volume"
1031 #define SNDRV_CTL_NAME_IEC958_DEFAULT                   "Default"
1032 #define SNDRV_CTL_NAME_IEC958_MASK                      "Mask"
1033 #define SNDRV_CTL_NAME_IEC958_CON_MASK                  "Con Mask"
1034 #define SNDRV_CTL_NAME_IEC958_PRO_MASK                  "Pro Mask"
1035 #define SNDRV_CTL_NAME_IEC958_PCM_STREAM                "PCM Stream"
1036 #define SNDRV_CTL_NAME_IEC958(expl,direction,what)      "IEC958 " expl SNDRV_CTL_NAME_##direction SNDRV_CTL_NAME_IEC958_##what
1037 
1038 #endif /* _UAPI__SOUND_ASOUND_H */