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0001 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
0002 /*
0003  *  Advanced Linux Sound Architecture - ALSA - Driver
0004  *  Copyright (c) 1994-2003 by Jaroslav Kysela <perex@perex.cz>,
0005  *                             Abramo Bagnara <abramo@alsa-project.org>
0006  *
0007  *
0008  *   This program is free software; you can redistribute it and/or modify
0009  *   it under the terms of the GNU General Public License as published by
0010  *   the Free Software Foundation; either version 2 of the License, or
0011  *   (at your option) any later version.
0012  *
0013  *   This program is distributed in the hope that it will be useful,
0014  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
0015  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
0016  *   GNU General Public License for more details.
0017  *
0018  *   You should have received a copy of the GNU General Public License
0019  *   along with this program; if not, write to the Free Software
0020  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
0021  *
0022  */
0023 
0024 #ifndef _UAPI__SOUND_ASOUND_H
0025 #define _UAPI__SOUND_ASOUND_H
0026 
0027 #if defined(__KERNEL__) || defined(__linux__)
0028 #include <linux/types.h>
0029 #include <asm/byteorder.h>
0030 #else
0031 #include <endian.h>
0032 #include <sys/ioctl.h>
0033 #endif
0034 
0035 #ifndef __KERNEL__
0036 #include <stdlib.h>
0037 #include <time.h>
0038 #endif
0039 
0040 /*
0041  *  protocol version
0042  */
0043 
0044 #define SNDRV_PROTOCOL_VERSION(major, minor, subminor) (((major)<<16)|((minor)<<8)|(subminor))
0045 #define SNDRV_PROTOCOL_MAJOR(version) (((version)>>16)&0xffff)
0046 #define SNDRV_PROTOCOL_MINOR(version) (((version)>>8)&0xff)
0047 #define SNDRV_PROTOCOL_MICRO(version) ((version)&0xff)
0048 #define SNDRV_PROTOCOL_INCOMPATIBLE(kversion, uversion) \
0049     (SNDRV_PROTOCOL_MAJOR(kversion) != SNDRV_PROTOCOL_MAJOR(uversion) || \
0050      (SNDRV_PROTOCOL_MAJOR(kversion) == SNDRV_PROTOCOL_MAJOR(uversion) && \
0051        SNDRV_PROTOCOL_MINOR(kversion) != SNDRV_PROTOCOL_MINOR(uversion)))
0052 
0053 /****************************************************************************
0054  *                                                                          *
0055  *        Digital audio interface                       *
0056  *                                                                          *
0057  ****************************************************************************/
0058 
0059 #define AES_IEC958_STATUS_SIZE      24
0060 
0061 struct snd_aes_iec958 {
0062     unsigned char status[AES_IEC958_STATUS_SIZE]; /* AES/IEC958 channel status bits */
0063     unsigned char subcode[147]; /* AES/IEC958 subcode bits */
0064     unsigned char pad;      /* nothing */
0065     unsigned char dig_subframe[4];  /* AES/IEC958 subframe bits */
0066 };
0067 
0068 /****************************************************************************
0069  *                                                                          *
0070  *        CEA-861 Audio InfoFrame. Used in HDMI and DisplayPort         *
0071  *                                                                          *
0072  ****************************************************************************/
0073 
0074 struct snd_cea_861_aud_if {
0075     unsigned char db1_ct_cc; /* coding type and channel count */
0076     unsigned char db2_sf_ss; /* sample frequency and size */
0077     unsigned char db3; /* not used, all zeros */
0078     unsigned char db4_ca; /* channel allocation code */
0079     unsigned char db5_dminh_lsv; /* downmix inhibit & level-shit values */
0080 };
0081 
0082 /****************************************************************************
0083  *                                                                          *
0084  *      Section for driver hardware dependent interface - /dev/snd/hw?      *
0085  *                                                                          *
0086  ****************************************************************************/
0087 
0088 #define SNDRV_HWDEP_VERSION     SNDRV_PROTOCOL_VERSION(1, 0, 1)
0089 
0090 enum {
0091     SNDRV_HWDEP_IFACE_OPL2 = 0,
0092     SNDRV_HWDEP_IFACE_OPL3,
0093     SNDRV_HWDEP_IFACE_OPL4,
0094     SNDRV_HWDEP_IFACE_SB16CSP,  /* Creative Signal Processor */
0095     SNDRV_HWDEP_IFACE_EMU10K1,  /* FX8010 processor in EMU10K1 chip */
0096     SNDRV_HWDEP_IFACE_YSS225,   /* Yamaha FX processor */
0097     SNDRV_HWDEP_IFACE_ICS2115,  /* Wavetable synth */
0098     SNDRV_HWDEP_IFACE_SSCAPE,   /* Ensoniq SoundScape ISA card (MC68EC000) */
0099     SNDRV_HWDEP_IFACE_VX,       /* Digigram VX cards */
0100     SNDRV_HWDEP_IFACE_MIXART,   /* Digigram miXart cards */
0101     SNDRV_HWDEP_IFACE_USX2Y,    /* Tascam US122, US224 & US428 usb */
0102     SNDRV_HWDEP_IFACE_EMUX_WAVETABLE, /* EmuX wavetable */
0103     SNDRV_HWDEP_IFACE_BLUETOOTH,    /* Bluetooth audio */
0104     SNDRV_HWDEP_IFACE_USX2Y_PCM,    /* Tascam US122, US224 & US428 rawusb pcm */
0105     SNDRV_HWDEP_IFACE_PCXHR,    /* Digigram PCXHR */
0106     SNDRV_HWDEP_IFACE_SB_RC,    /* SB Extigy/Audigy2NX remote control */
0107     SNDRV_HWDEP_IFACE_HDA,      /* HD-audio */
0108     SNDRV_HWDEP_IFACE_USB_STREAM,   /* direct access to usb stream */
0109     SNDRV_HWDEP_IFACE_FW_DICE,  /* TC DICE FireWire device */
0110     SNDRV_HWDEP_IFACE_FW_FIREWORKS, /* Echo Audio Fireworks based device */
0111     SNDRV_HWDEP_IFACE_FW_BEBOB, /* BridgeCo BeBoB based device */
0112     SNDRV_HWDEP_IFACE_FW_OXFW,  /* Oxford OXFW970/971 based device */
0113     SNDRV_HWDEP_IFACE_FW_DIGI00X,   /* Digidesign Digi 002/003 family */
0114     SNDRV_HWDEP_IFACE_FW_TASCAM,    /* TASCAM FireWire series */
0115     SNDRV_HWDEP_IFACE_LINE6,    /* Line6 USB processors */
0116     SNDRV_HWDEP_IFACE_FW_MOTU,  /* MOTU FireWire series */
0117     SNDRV_HWDEP_IFACE_FW_FIREFACE,  /* RME Fireface series */
0118 
0119     /* Don't forget to change the following: */
0120     SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_FW_FIREFACE
0121 };
0122 
0123 struct snd_hwdep_info {
0124     unsigned int device;        /* WR: device number */
0125     int card;           /* R: card number */
0126     unsigned char id[64];       /* ID (user selectable) */
0127     unsigned char name[80];     /* hwdep name */
0128     int iface;          /* hwdep interface */
0129     unsigned char reserved[64]; /* reserved for future */
0130 };
0131 
0132 /* generic DSP loader */
0133 struct snd_hwdep_dsp_status {
0134     unsigned int version;       /* R: driver-specific version */
0135     unsigned char id[32];       /* R: driver-specific ID string */
0136     unsigned int num_dsps;      /* R: number of DSP images to transfer */
0137     unsigned int dsp_loaded;    /* R: bit flags indicating the loaded DSPs */
0138     unsigned int chip_ready;    /* R: 1 = initialization finished */
0139     unsigned char reserved[16]; /* reserved for future use */
0140 };
0141 
0142 struct snd_hwdep_dsp_image {
0143     unsigned int index;     /* W: DSP index */
0144     unsigned char name[64];     /* W: ID (e.g. file name) */
0145     unsigned char __user *image;    /* W: binary image */
0146     size_t length;          /* W: size of image in bytes */
0147     unsigned long driver_data;  /* W: driver-specific data */
0148 };
0149 
0150 #define SNDRV_HWDEP_IOCTL_PVERSION  _IOR ('H', 0x00, int)
0151 #define SNDRV_HWDEP_IOCTL_INFO      _IOR ('H', 0x01, struct snd_hwdep_info)
0152 #define SNDRV_HWDEP_IOCTL_DSP_STATUS    _IOR('H', 0x02, struct snd_hwdep_dsp_status)
0153 #define SNDRV_HWDEP_IOCTL_DSP_LOAD  _IOW('H', 0x03, struct snd_hwdep_dsp_image)
0154 
0155 /*****************************************************************************
0156  *                                                                           *
0157  *             Digital Audio (PCM) interface - /dev/snd/pcm??                *
0158  *                                                                           *
0159  *****************************************************************************/
0160 
0161 #define SNDRV_PCM_VERSION       SNDRV_PROTOCOL_VERSION(2, 0, 15)
0162 
0163 typedef unsigned long snd_pcm_uframes_t;
0164 typedef signed long snd_pcm_sframes_t;
0165 
0166 enum {
0167     SNDRV_PCM_CLASS_GENERIC = 0,    /* standard mono or stereo device */
0168     SNDRV_PCM_CLASS_MULTI,      /* multichannel device */
0169     SNDRV_PCM_CLASS_MODEM,      /* software modem class */
0170     SNDRV_PCM_CLASS_DIGITIZER,  /* digitizer class */
0171     /* Don't forget to change the following: */
0172     SNDRV_PCM_CLASS_LAST = SNDRV_PCM_CLASS_DIGITIZER,
0173 };
0174 
0175 enum {
0176     SNDRV_PCM_SUBCLASS_GENERIC_MIX = 0, /* mono or stereo subdevices are mixed together */
0177     SNDRV_PCM_SUBCLASS_MULTI_MIX,   /* multichannel subdevices are mixed together */
0178     /* Don't forget to change the following: */
0179     SNDRV_PCM_SUBCLASS_LAST = SNDRV_PCM_SUBCLASS_MULTI_MIX,
0180 };
0181 
0182 enum {
0183     SNDRV_PCM_STREAM_PLAYBACK = 0,
0184     SNDRV_PCM_STREAM_CAPTURE,
0185     SNDRV_PCM_STREAM_LAST = SNDRV_PCM_STREAM_CAPTURE,
0186 };
0187 
0188 typedef int __bitwise snd_pcm_access_t;
0189 #define SNDRV_PCM_ACCESS_MMAP_INTERLEAVED   ((__force snd_pcm_access_t) 0) /* interleaved mmap */
0190 #define SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED    ((__force snd_pcm_access_t) 1) /* noninterleaved mmap */
0191 #define SNDRV_PCM_ACCESS_MMAP_COMPLEX       ((__force snd_pcm_access_t) 2) /* complex mmap */
0192 #define SNDRV_PCM_ACCESS_RW_INTERLEAVED     ((__force snd_pcm_access_t) 3) /* readi/writei */
0193 #define SNDRV_PCM_ACCESS_RW_NONINTERLEAVED  ((__force snd_pcm_access_t) 4) /* readn/writen */
0194 #define SNDRV_PCM_ACCESS_LAST       SNDRV_PCM_ACCESS_RW_NONINTERLEAVED
0195 
0196 typedef int __bitwise snd_pcm_format_t;
0197 #define SNDRV_PCM_FORMAT_S8 ((__force snd_pcm_format_t) 0)
0198 #define SNDRV_PCM_FORMAT_U8 ((__force snd_pcm_format_t) 1)
0199 #define SNDRV_PCM_FORMAT_S16_LE ((__force snd_pcm_format_t) 2)
0200 #define SNDRV_PCM_FORMAT_S16_BE ((__force snd_pcm_format_t) 3)
0201 #define SNDRV_PCM_FORMAT_U16_LE ((__force snd_pcm_format_t) 4)
0202 #define SNDRV_PCM_FORMAT_U16_BE ((__force snd_pcm_format_t) 5)
0203 #define SNDRV_PCM_FORMAT_S24_LE ((__force snd_pcm_format_t) 6) /* low three bytes */
0204 #define SNDRV_PCM_FORMAT_S24_BE ((__force snd_pcm_format_t) 7) /* low three bytes */
0205 #define SNDRV_PCM_FORMAT_U24_LE ((__force snd_pcm_format_t) 8) /* low three bytes */
0206 #define SNDRV_PCM_FORMAT_U24_BE ((__force snd_pcm_format_t) 9) /* low three bytes */
0207 /*
0208  * For S32/U32 formats, 'msbits' hardware parameter is often used to deliver information about the
0209  * available bit count in most significant bit. It's for the case of so-called 'left-justified' or
0210  * `right-padding` sample which has less width than 32 bit.
0211  */
0212 #define SNDRV_PCM_FORMAT_S32_LE ((__force snd_pcm_format_t) 10)
0213 #define SNDRV_PCM_FORMAT_S32_BE ((__force snd_pcm_format_t) 11)
0214 #define SNDRV_PCM_FORMAT_U32_LE ((__force snd_pcm_format_t) 12)
0215 #define SNDRV_PCM_FORMAT_U32_BE ((__force snd_pcm_format_t) 13)
0216 #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 */
0217 #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 */
0218 #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 */
0219 #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 */
0220 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE ((__force snd_pcm_format_t) 18) /* IEC-958 subframe, Little Endian */
0221 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE ((__force snd_pcm_format_t) 19) /* IEC-958 subframe, Big Endian */
0222 #define SNDRV_PCM_FORMAT_MU_LAW     ((__force snd_pcm_format_t) 20)
0223 #define SNDRV_PCM_FORMAT_A_LAW      ((__force snd_pcm_format_t) 21)
0224 #define SNDRV_PCM_FORMAT_IMA_ADPCM  ((__force snd_pcm_format_t) 22)
0225 #define SNDRV_PCM_FORMAT_MPEG       ((__force snd_pcm_format_t) 23)
0226 #define SNDRV_PCM_FORMAT_GSM        ((__force snd_pcm_format_t) 24)
0227 #define SNDRV_PCM_FORMAT_S20_LE ((__force snd_pcm_format_t) 25) /* in four bytes, LSB justified */
0228 #define SNDRV_PCM_FORMAT_S20_BE ((__force snd_pcm_format_t) 26) /* in four bytes, LSB justified */
0229 #define SNDRV_PCM_FORMAT_U20_LE ((__force snd_pcm_format_t) 27) /* in four bytes, LSB justified */
0230 #define SNDRV_PCM_FORMAT_U20_BE ((__force snd_pcm_format_t) 28) /* in four bytes, LSB justified */
0231 /* gap in the numbering for a future standard linear format */
0232 #define SNDRV_PCM_FORMAT_SPECIAL    ((__force snd_pcm_format_t) 31)
0233 #define SNDRV_PCM_FORMAT_S24_3LE    ((__force snd_pcm_format_t) 32) /* in three bytes */
0234 #define SNDRV_PCM_FORMAT_S24_3BE    ((__force snd_pcm_format_t) 33) /* in three bytes */
0235 #define SNDRV_PCM_FORMAT_U24_3LE    ((__force snd_pcm_format_t) 34) /* in three bytes */
0236 #define SNDRV_PCM_FORMAT_U24_3BE    ((__force snd_pcm_format_t) 35) /* in three bytes */
0237 #define SNDRV_PCM_FORMAT_S20_3LE    ((__force snd_pcm_format_t) 36) /* in three bytes */
0238 #define SNDRV_PCM_FORMAT_S20_3BE    ((__force snd_pcm_format_t) 37) /* in three bytes */
0239 #define SNDRV_PCM_FORMAT_U20_3LE    ((__force snd_pcm_format_t) 38) /* in three bytes */
0240 #define SNDRV_PCM_FORMAT_U20_3BE    ((__force snd_pcm_format_t) 39) /* in three bytes */
0241 #define SNDRV_PCM_FORMAT_S18_3LE    ((__force snd_pcm_format_t) 40) /* in three bytes */
0242 #define SNDRV_PCM_FORMAT_S18_3BE    ((__force snd_pcm_format_t) 41) /* in three bytes */
0243 #define SNDRV_PCM_FORMAT_U18_3LE    ((__force snd_pcm_format_t) 42) /* in three bytes */
0244 #define SNDRV_PCM_FORMAT_U18_3BE    ((__force snd_pcm_format_t) 43) /* in three bytes */
0245 #define SNDRV_PCM_FORMAT_G723_24    ((__force snd_pcm_format_t) 44) /* 8 samples in 3 bytes */
0246 #define SNDRV_PCM_FORMAT_G723_24_1B ((__force snd_pcm_format_t) 45) /* 1 sample in 1 byte */
0247 #define SNDRV_PCM_FORMAT_G723_40    ((__force snd_pcm_format_t) 46) /* 8 Samples in 5 bytes */
0248 #define SNDRV_PCM_FORMAT_G723_40_1B ((__force snd_pcm_format_t) 47) /* 1 sample in 1 byte */
0249 #define SNDRV_PCM_FORMAT_DSD_U8     ((__force snd_pcm_format_t) 48) /* DSD, 1-byte samples DSD (x8) */
0250 #define SNDRV_PCM_FORMAT_DSD_U16_LE ((__force snd_pcm_format_t) 49) /* DSD, 2-byte samples DSD (x16), little endian */
0251 #define SNDRV_PCM_FORMAT_DSD_U32_LE ((__force snd_pcm_format_t) 50) /* DSD, 4-byte samples DSD (x32), little endian */
0252 #define SNDRV_PCM_FORMAT_DSD_U16_BE ((__force snd_pcm_format_t) 51) /* DSD, 2-byte samples DSD (x16), big endian */
0253 #define SNDRV_PCM_FORMAT_DSD_U32_BE ((__force snd_pcm_format_t) 52) /* DSD, 4-byte samples DSD (x32), big endian */
0254 #define SNDRV_PCM_FORMAT_LAST       SNDRV_PCM_FORMAT_DSD_U32_BE
0255 #define SNDRV_PCM_FORMAT_FIRST      SNDRV_PCM_FORMAT_S8
0256 
0257 #ifdef SNDRV_LITTLE_ENDIAN
0258 #define SNDRV_PCM_FORMAT_S16        SNDRV_PCM_FORMAT_S16_LE
0259 #define SNDRV_PCM_FORMAT_U16        SNDRV_PCM_FORMAT_U16_LE
0260 #define SNDRV_PCM_FORMAT_S24        SNDRV_PCM_FORMAT_S24_LE
0261 #define SNDRV_PCM_FORMAT_U24        SNDRV_PCM_FORMAT_U24_LE
0262 #define SNDRV_PCM_FORMAT_S32        SNDRV_PCM_FORMAT_S32_LE
0263 #define SNDRV_PCM_FORMAT_U32        SNDRV_PCM_FORMAT_U32_LE
0264 #define SNDRV_PCM_FORMAT_FLOAT      SNDRV_PCM_FORMAT_FLOAT_LE
0265 #define SNDRV_PCM_FORMAT_FLOAT64    SNDRV_PCM_FORMAT_FLOAT64_LE
0266 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE
0267 #define SNDRV_PCM_FORMAT_S20        SNDRV_PCM_FORMAT_S20_LE
0268 #define SNDRV_PCM_FORMAT_U20        SNDRV_PCM_FORMAT_U20_LE
0269 #endif
0270 #ifdef SNDRV_BIG_ENDIAN
0271 #define SNDRV_PCM_FORMAT_S16        SNDRV_PCM_FORMAT_S16_BE
0272 #define SNDRV_PCM_FORMAT_U16        SNDRV_PCM_FORMAT_U16_BE
0273 #define SNDRV_PCM_FORMAT_S24        SNDRV_PCM_FORMAT_S24_BE
0274 #define SNDRV_PCM_FORMAT_U24        SNDRV_PCM_FORMAT_U24_BE
0275 #define SNDRV_PCM_FORMAT_S32        SNDRV_PCM_FORMAT_S32_BE
0276 #define SNDRV_PCM_FORMAT_U32        SNDRV_PCM_FORMAT_U32_BE
0277 #define SNDRV_PCM_FORMAT_FLOAT      SNDRV_PCM_FORMAT_FLOAT_BE
0278 #define SNDRV_PCM_FORMAT_FLOAT64    SNDRV_PCM_FORMAT_FLOAT64_BE
0279 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE
0280 #define SNDRV_PCM_FORMAT_S20        SNDRV_PCM_FORMAT_S20_BE
0281 #define SNDRV_PCM_FORMAT_U20        SNDRV_PCM_FORMAT_U20_BE
0282 #endif
0283 
0284 typedef int __bitwise snd_pcm_subformat_t;
0285 #define SNDRV_PCM_SUBFORMAT_STD     ((__force snd_pcm_subformat_t) 0)
0286 #define SNDRV_PCM_SUBFORMAT_LAST    SNDRV_PCM_SUBFORMAT_STD
0287 
0288 #define SNDRV_PCM_INFO_MMAP     0x00000001  /* hardware supports mmap */
0289 #define SNDRV_PCM_INFO_MMAP_VALID   0x00000002  /* period data are valid during transfer */
0290 #define SNDRV_PCM_INFO_DOUBLE       0x00000004  /* Double buffering needed for PCM start/stop */
0291 #define SNDRV_PCM_INFO_BATCH        0x00000010  /* double buffering */
0292 #define SNDRV_PCM_INFO_SYNC_APPLPTR 0x00000020  /* need the explicit sync of appl_ptr update */
0293 #define SNDRV_PCM_INFO_INTERLEAVED  0x00000100  /* channels are interleaved */
0294 #define SNDRV_PCM_INFO_NONINTERLEAVED   0x00000200  /* channels are not interleaved */
0295 #define SNDRV_PCM_INFO_COMPLEX      0x00000400  /* complex frame organization (mmap only) */
0296 #define SNDRV_PCM_INFO_BLOCK_TRANSFER   0x00010000  /* hardware transfer block of samples */
0297 #define SNDRV_PCM_INFO_OVERRANGE    0x00020000  /* hardware supports ADC (capture) overrange detection */
0298 #define SNDRV_PCM_INFO_RESUME       0x00040000  /* hardware supports stream resume after suspend */
0299 #define SNDRV_PCM_INFO_PAUSE        0x00080000  /* pause ioctl is supported */
0300 #define SNDRV_PCM_INFO_HALF_DUPLEX  0x00100000  /* only half duplex */
0301 #define SNDRV_PCM_INFO_JOINT_DUPLEX 0x00200000  /* playback and capture stream are somewhat correlated */
0302 #define SNDRV_PCM_INFO_SYNC_START   0x00400000  /* pcm support some kind of sync go */
0303 #define SNDRV_PCM_INFO_NO_PERIOD_WAKEUP 0x00800000  /* period wakeup can be disabled */
0304 #define SNDRV_PCM_INFO_HAS_WALL_CLOCK   0x01000000      /* (Deprecated)has audio wall clock for audio/system time sync */
0305 #define SNDRV_PCM_INFO_HAS_LINK_ATIME              0x01000000  /* report hardware link audio time, reset on startup */
0306 #define SNDRV_PCM_INFO_HAS_LINK_ABSOLUTE_ATIME     0x02000000  /* report absolute hardware link audio time, not reset on startup */
0307 #define SNDRV_PCM_INFO_HAS_LINK_ESTIMATED_ATIME    0x04000000  /* report estimated link audio time */
0308 #define SNDRV_PCM_INFO_HAS_LINK_SYNCHRONIZED_ATIME 0x08000000  /* report synchronized audio/system time */
0309 #define SNDRV_PCM_INFO_EXPLICIT_SYNC    0x10000000  /* needs explicit sync of pointers and data */
0310 #define SNDRV_PCM_INFO_NO_REWINDS   0x20000000  /* hardware can only support monotonic changes of appl_ptr */
0311 #define SNDRV_PCM_INFO_DRAIN_TRIGGER    0x40000000      /* internal kernel flag - trigger in drain */
0312 #define SNDRV_PCM_INFO_FIFO_IN_FRAMES   0x80000000  /* internal kernel flag - FIFO size is in frames */
0313 
0314 #if (__BITS_PER_LONG == 32 && defined(__USE_TIME_BITS64)) || defined __KERNEL__
0315 #define __SND_STRUCT_TIME64
0316 #endif
0317 
0318 typedef int __bitwise snd_pcm_state_t;
0319 #define SNDRV_PCM_STATE_OPEN        ((__force snd_pcm_state_t) 0) /* stream is open */
0320 #define SNDRV_PCM_STATE_SETUP       ((__force snd_pcm_state_t) 1) /* stream has a setup */
0321 #define SNDRV_PCM_STATE_PREPARED    ((__force snd_pcm_state_t) 2) /* stream is ready to start */
0322 #define SNDRV_PCM_STATE_RUNNING     ((__force snd_pcm_state_t) 3) /* stream is running */
0323 #define SNDRV_PCM_STATE_XRUN        ((__force snd_pcm_state_t) 4) /* stream reached an xrun */
0324 #define SNDRV_PCM_STATE_DRAINING    ((__force snd_pcm_state_t) 5) /* stream is draining */
0325 #define SNDRV_PCM_STATE_PAUSED      ((__force snd_pcm_state_t) 6) /* stream is paused */
0326 #define SNDRV_PCM_STATE_SUSPENDED   ((__force snd_pcm_state_t) 7) /* hardware is suspended */
0327 #define SNDRV_PCM_STATE_DISCONNECTED    ((__force snd_pcm_state_t) 8) /* hardware is disconnected */
0328 #define SNDRV_PCM_STATE_LAST        SNDRV_PCM_STATE_DISCONNECTED
0329 
0330 enum {
0331     SNDRV_PCM_MMAP_OFFSET_DATA = 0x00000000,
0332     SNDRV_PCM_MMAP_OFFSET_STATUS_OLD = 0x80000000,
0333     SNDRV_PCM_MMAP_OFFSET_CONTROL_OLD = 0x81000000,
0334     SNDRV_PCM_MMAP_OFFSET_STATUS_NEW = 0x82000000,
0335     SNDRV_PCM_MMAP_OFFSET_CONTROL_NEW = 0x83000000,
0336 #ifdef __SND_STRUCT_TIME64
0337     SNDRV_PCM_MMAP_OFFSET_STATUS = SNDRV_PCM_MMAP_OFFSET_STATUS_NEW,
0338     SNDRV_PCM_MMAP_OFFSET_CONTROL = SNDRV_PCM_MMAP_OFFSET_CONTROL_NEW,
0339 #else
0340     SNDRV_PCM_MMAP_OFFSET_STATUS = SNDRV_PCM_MMAP_OFFSET_STATUS_OLD,
0341     SNDRV_PCM_MMAP_OFFSET_CONTROL = SNDRV_PCM_MMAP_OFFSET_CONTROL_OLD,
0342 #endif
0343 };
0344 
0345 union snd_pcm_sync_id {
0346     unsigned char id[16];
0347     unsigned short id16[8];
0348     unsigned int id32[4];
0349 };
0350 
0351 struct snd_pcm_info {
0352     unsigned int device;        /* RO/WR (control): device number */
0353     unsigned int subdevice;     /* RO/WR (control): subdevice number */
0354     int stream;         /* RO/WR (control): stream direction */
0355     int card;           /* R: card number */
0356     unsigned char id[64];       /* ID (user selectable) */
0357     unsigned char name[80];     /* name of this device */
0358     unsigned char subname[32];  /* subdevice name */
0359     int dev_class;          /* SNDRV_PCM_CLASS_* */
0360     int dev_subclass;       /* SNDRV_PCM_SUBCLASS_* */
0361     unsigned int subdevices_count;
0362     unsigned int subdevices_avail;
0363     union snd_pcm_sync_id sync; /* hardware synchronization ID */
0364     unsigned char reserved[64]; /* reserved for future... */
0365 };
0366 
0367 typedef int snd_pcm_hw_param_t;
0368 #define SNDRV_PCM_HW_PARAM_ACCESS   0   /* Access type */
0369 #define SNDRV_PCM_HW_PARAM_FORMAT   1   /* Format */
0370 #define SNDRV_PCM_HW_PARAM_SUBFORMAT    2   /* Subformat */
0371 #define SNDRV_PCM_HW_PARAM_FIRST_MASK   SNDRV_PCM_HW_PARAM_ACCESS
0372 #define SNDRV_PCM_HW_PARAM_LAST_MASK    SNDRV_PCM_HW_PARAM_SUBFORMAT
0373 
0374 #define SNDRV_PCM_HW_PARAM_SAMPLE_BITS  8   /* Bits per sample */
0375 #define SNDRV_PCM_HW_PARAM_FRAME_BITS   9   /* Bits per frame */
0376 #define SNDRV_PCM_HW_PARAM_CHANNELS 10  /* Channels */
0377 #define SNDRV_PCM_HW_PARAM_RATE     11  /* Approx rate */
0378 #define SNDRV_PCM_HW_PARAM_PERIOD_TIME  12  /* Approx distance between
0379                          * interrupts in us
0380                          */
0381 #define SNDRV_PCM_HW_PARAM_PERIOD_SIZE  13  /* Approx frames between
0382                          * interrupts
0383                          */
0384 #define SNDRV_PCM_HW_PARAM_PERIOD_BYTES 14  /* Approx bytes between
0385                          * interrupts
0386                          */
0387 #define SNDRV_PCM_HW_PARAM_PERIODS  15  /* Approx interrupts per
0388                          * buffer
0389                          */
0390 #define SNDRV_PCM_HW_PARAM_BUFFER_TIME  16  /* Approx duration of buffer
0391                          * in us
0392                          */
0393 #define SNDRV_PCM_HW_PARAM_BUFFER_SIZE  17  /* Size of buffer in frames */
0394 #define SNDRV_PCM_HW_PARAM_BUFFER_BYTES 18  /* Size of buffer in bytes */
0395 #define SNDRV_PCM_HW_PARAM_TICK_TIME    19  /* Approx tick duration in us */
0396 #define SNDRV_PCM_HW_PARAM_FIRST_INTERVAL   SNDRV_PCM_HW_PARAM_SAMPLE_BITS
0397 #define SNDRV_PCM_HW_PARAM_LAST_INTERVAL    SNDRV_PCM_HW_PARAM_TICK_TIME
0398 
0399 #define SNDRV_PCM_HW_PARAMS_NORESAMPLE  (1<<0)  /* avoid rate resampling */
0400 #define SNDRV_PCM_HW_PARAMS_EXPORT_BUFFER   (1<<1)  /* export buffer */
0401 #define SNDRV_PCM_HW_PARAMS_NO_PERIOD_WAKEUP    (1<<2)  /* disable period wakeups */
0402 
0403 struct snd_interval {
0404     unsigned int min, max;
0405     unsigned int openmin:1,
0406              openmax:1,
0407              integer:1,
0408              empty:1;
0409 };
0410 
0411 #define SNDRV_MASK_MAX  256
0412 
0413 struct snd_mask {
0414     __u32 bits[(SNDRV_MASK_MAX+31)/32];
0415 };
0416 
0417 struct snd_pcm_hw_params {
0418     unsigned int flags;
0419     struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK -
0420                    SNDRV_PCM_HW_PARAM_FIRST_MASK + 1];
0421     struct snd_mask mres[5];    /* reserved masks */
0422     struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL -
0423                         SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];
0424     struct snd_interval ires[9];    /* reserved intervals */
0425     unsigned int rmask;     /* W: requested masks */
0426     unsigned int cmask;     /* R: changed masks */
0427     unsigned int info;      /* R: Info flags for returned setup */
0428     unsigned int msbits;        /* R: used most significant bits */
0429     unsigned int rate_num;      /* R: rate numerator */
0430     unsigned int rate_den;      /* R: rate denominator */
0431     snd_pcm_uframes_t fifo_size;    /* R: chip FIFO size in frames */
0432     unsigned char reserved[64]; /* reserved for future */
0433 };
0434 
0435 enum {
0436     SNDRV_PCM_TSTAMP_NONE = 0,
0437     SNDRV_PCM_TSTAMP_ENABLE,
0438     SNDRV_PCM_TSTAMP_LAST = SNDRV_PCM_TSTAMP_ENABLE,
0439 };
0440 
0441 struct snd_pcm_sw_params {
0442     int tstamp_mode;            /* timestamp mode */
0443     unsigned int period_step;
0444     unsigned int sleep_min;         /* min ticks to sleep */
0445     snd_pcm_uframes_t avail_min;        /* min avail frames for wakeup */
0446     snd_pcm_uframes_t xfer_align;       /* obsolete: xfer size need to be a multiple */
0447     snd_pcm_uframes_t start_threshold;  /* min hw_avail frames for automatic start */
0448     snd_pcm_uframes_t stop_threshold;   /* min avail frames for automatic stop */
0449     snd_pcm_uframes_t silence_threshold;    /* min distance from noise for silence filling */
0450     snd_pcm_uframes_t silence_size;     /* silence block size */
0451     snd_pcm_uframes_t boundary;     /* pointers wrap point */
0452     unsigned int proto;         /* protocol version */
0453     unsigned int tstamp_type;       /* timestamp type (req. proto >= 2.0.12) */
0454     unsigned char reserved[56];     /* reserved for future */
0455 };
0456 
0457 struct snd_pcm_channel_info {
0458     unsigned int channel;
0459     __kernel_off_t offset;      /* mmap offset */
0460     unsigned int first;     /* offset to first sample in bits */
0461     unsigned int step;      /* samples distance in bits */
0462 };
0463 
0464 enum {
0465     /*
0466      *  first definition for backwards compatibility only,
0467      *  maps to wallclock/link time for HDAudio playback and DEFAULT/DMA time for everything else
0468      */
0469     SNDRV_PCM_AUDIO_TSTAMP_TYPE_COMPAT = 0,
0470 
0471     /* timestamp definitions */
0472     SNDRV_PCM_AUDIO_TSTAMP_TYPE_DEFAULT = 1,           /* DMA time, reported as per hw_ptr */
0473     SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK = 2,              /* link time reported by sample or wallclock counter, reset on startup */
0474     SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_ABSOLUTE = 3,     /* link time reported by sample or wallclock counter, not reset on startup */
0475     SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_ESTIMATED = 4,    /* link time estimated indirectly */
0476     SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_SYNCHRONIZED = 5, /* link time synchronized with system time */
0477     SNDRV_PCM_AUDIO_TSTAMP_TYPE_LAST = SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_SYNCHRONIZED
0478 };
0479 
0480 #ifndef __KERNEL__
0481 /* explicit padding avoids incompatibility between i386 and x86-64 */
0482 typedef struct { unsigned char pad[sizeof(time_t) - sizeof(int)]; } __time_pad;
0483 
0484 struct snd_pcm_status {
0485     snd_pcm_state_t state;      /* stream state */
0486     __time_pad pad1;        /* align to timespec */
0487     struct timespec trigger_tstamp; /* time when stream was started/stopped/paused */
0488     struct timespec tstamp;     /* reference timestamp */
0489     snd_pcm_uframes_t appl_ptr; /* appl ptr */
0490     snd_pcm_uframes_t hw_ptr;   /* hw ptr */
0491     snd_pcm_sframes_t delay;    /* current delay in frames */
0492     snd_pcm_uframes_t avail;    /* number of frames available */
0493     snd_pcm_uframes_t avail_max;    /* max frames available on hw since last status */
0494     snd_pcm_uframes_t overrange;    /* count of ADC (capture) overrange detections from last status */
0495     snd_pcm_state_t suspended_state; /* suspended stream state */
0496     __u32 audio_tstamp_data;     /* needed for 64-bit alignment, used for configs/report to/from userspace */
0497     struct timespec audio_tstamp;   /* sample counter, wall clock, PHC or on-demand sync'ed */
0498     struct timespec driver_tstamp;  /* useful in case reference system tstamp is reported with delay */
0499     __u32 audio_tstamp_accuracy;    /* in ns units, only valid if indicated in audio_tstamp_data */
0500     unsigned char reserved[52-2*sizeof(struct timespec)]; /* must be filled with zero */
0501 };
0502 #endif
0503 
0504 /*
0505  * For mmap operations, we need the 64-bit layout, both for compat mode,
0506  * and for y2038 compatibility. For 64-bit applications, the two definitions
0507  * are identical, so we keep the traditional version.
0508  */
0509 #ifdef __SND_STRUCT_TIME64
0510 #define __snd_pcm_mmap_status64     snd_pcm_mmap_status
0511 #define __snd_pcm_mmap_control64    snd_pcm_mmap_control
0512 #define __snd_pcm_sync_ptr64        snd_pcm_sync_ptr
0513 #ifdef __KERNEL__
0514 #define __snd_timespec64        __kernel_timespec
0515 #else
0516 #define __snd_timespec64        timespec
0517 #endif
0518 struct __snd_timespec {
0519     __s32 tv_sec;
0520     __s32 tv_nsec;
0521 };
0522 #else
0523 #define __snd_pcm_mmap_status       snd_pcm_mmap_status
0524 #define __snd_pcm_mmap_control      snd_pcm_mmap_control
0525 #define __snd_pcm_sync_ptr      snd_pcm_sync_ptr
0526 #define __snd_timespec          timespec
0527 struct __snd_timespec64 {
0528     __s64 tv_sec;
0529     __s64 tv_nsec;
0530 };
0531 
0532 #endif
0533 
0534 struct __snd_pcm_mmap_status {
0535     snd_pcm_state_t state;      /* RO: state - SNDRV_PCM_STATE_XXXX */
0536     int pad1;           /* Needed for 64 bit alignment */
0537     snd_pcm_uframes_t hw_ptr;   /* RO: hw ptr (0...boundary-1) */
0538     struct __snd_timespec tstamp;   /* Timestamp */
0539     snd_pcm_state_t suspended_state; /* RO: suspended stream state */
0540     struct __snd_timespec audio_tstamp; /* from sample counter or wall clock */
0541 };
0542 
0543 struct __snd_pcm_mmap_control {
0544     snd_pcm_uframes_t appl_ptr; /* RW: appl ptr (0...boundary-1) */
0545     snd_pcm_uframes_t avail_min;    /* RW: min available frames for wakeup */
0546 };
0547 
0548 #define SNDRV_PCM_SYNC_PTR_HWSYNC   (1<<0)  /* execute hwsync */
0549 #define SNDRV_PCM_SYNC_PTR_APPL     (1<<1)  /* get appl_ptr from driver (r/w op) */
0550 #define SNDRV_PCM_SYNC_PTR_AVAIL_MIN    (1<<2)  /* get avail_min from driver */
0551 
0552 struct __snd_pcm_sync_ptr {
0553     unsigned int flags;
0554     union {
0555         struct __snd_pcm_mmap_status status;
0556         unsigned char reserved[64];
0557     } s;
0558     union {
0559         struct __snd_pcm_mmap_control control;
0560         unsigned char reserved[64];
0561     } c;
0562 };
0563 
0564 #if defined(__BYTE_ORDER) ? __BYTE_ORDER == __BIG_ENDIAN : defined(__BIG_ENDIAN)
0565 typedef char __pad_before_uframe[sizeof(__u64) - sizeof(snd_pcm_uframes_t)];
0566 typedef char __pad_after_uframe[0];
0567 #endif
0568 
0569 #if defined(__BYTE_ORDER) ? __BYTE_ORDER == __LITTLE_ENDIAN : defined(__LITTLE_ENDIAN)
0570 typedef char __pad_before_uframe[0];
0571 typedef char __pad_after_uframe[sizeof(__u64) - sizeof(snd_pcm_uframes_t)];
0572 #endif
0573 
0574 struct __snd_pcm_mmap_status64 {
0575     snd_pcm_state_t state;      /* RO: state - SNDRV_PCM_STATE_XXXX */
0576     __u32 pad1;         /* Needed for 64 bit alignment */
0577     __pad_before_uframe __pad1;
0578     snd_pcm_uframes_t hw_ptr;   /* RO: hw ptr (0...boundary-1) */
0579     __pad_after_uframe __pad2;
0580     struct __snd_timespec64 tstamp; /* Timestamp */
0581     snd_pcm_state_t suspended_state;/* RO: suspended stream state */
0582     __u32 pad3;         /* Needed for 64 bit alignment */
0583     struct __snd_timespec64 audio_tstamp; /* sample counter or wall clock */
0584 };
0585 
0586 struct __snd_pcm_mmap_control64 {
0587     __pad_before_uframe __pad1;
0588     snd_pcm_uframes_t appl_ptr;  /* RW: appl ptr (0...boundary-1) */
0589     __pad_before_uframe __pad2;
0590 
0591     __pad_before_uframe __pad3;
0592     snd_pcm_uframes_t  avail_min;    /* RW: min available frames for wakeup */
0593     __pad_after_uframe __pad4;
0594 };
0595 
0596 struct __snd_pcm_sync_ptr64 {
0597     __u32 flags;
0598     __u32 pad1;
0599     union {
0600         struct __snd_pcm_mmap_status64 status;
0601         unsigned char reserved[64];
0602     } s;
0603     union {
0604         struct __snd_pcm_mmap_control64 control;
0605         unsigned char reserved[64];
0606     } c;
0607 };
0608 
0609 struct snd_xferi {
0610     snd_pcm_sframes_t result;
0611     void __user *buf;
0612     snd_pcm_uframes_t frames;
0613 };
0614 
0615 struct snd_xfern {
0616     snd_pcm_sframes_t result;
0617     void __user * __user *bufs;
0618     snd_pcm_uframes_t frames;
0619 };
0620 
0621 enum {
0622     SNDRV_PCM_TSTAMP_TYPE_GETTIMEOFDAY = 0, /* gettimeofday equivalent */
0623     SNDRV_PCM_TSTAMP_TYPE_MONOTONIC,    /* posix_clock_monotonic equivalent */
0624     SNDRV_PCM_TSTAMP_TYPE_MONOTONIC_RAW,    /* monotonic_raw (no NTP) */
0625     SNDRV_PCM_TSTAMP_TYPE_LAST = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC_RAW,
0626 };
0627 
0628 /* channel positions */
0629 enum {
0630     SNDRV_CHMAP_UNKNOWN = 0,
0631     SNDRV_CHMAP_NA,     /* N/A, silent */
0632     SNDRV_CHMAP_MONO,   /* mono stream */
0633     /* this follows the alsa-lib mixer channel value + 3 */
0634     SNDRV_CHMAP_FL,     /* front left */
0635     SNDRV_CHMAP_FR,     /* front right */
0636     SNDRV_CHMAP_RL,     /* rear left */
0637     SNDRV_CHMAP_RR,     /* rear right */
0638     SNDRV_CHMAP_FC,     /* front center */
0639     SNDRV_CHMAP_LFE,    /* LFE */
0640     SNDRV_CHMAP_SL,     /* side left */
0641     SNDRV_CHMAP_SR,     /* side right */
0642     SNDRV_CHMAP_RC,     /* rear center */
0643     /* new definitions */
0644     SNDRV_CHMAP_FLC,    /* front left center */
0645     SNDRV_CHMAP_FRC,    /* front right center */
0646     SNDRV_CHMAP_RLC,    /* rear left center */
0647     SNDRV_CHMAP_RRC,    /* rear right center */
0648     SNDRV_CHMAP_FLW,    /* front left wide */
0649     SNDRV_CHMAP_FRW,    /* front right wide */
0650     SNDRV_CHMAP_FLH,    /* front left high */
0651     SNDRV_CHMAP_FCH,    /* front center high */
0652     SNDRV_CHMAP_FRH,    /* front right high */
0653     SNDRV_CHMAP_TC,     /* top center */
0654     SNDRV_CHMAP_TFL,    /* top front left */
0655     SNDRV_CHMAP_TFR,    /* top front right */
0656     SNDRV_CHMAP_TFC,    /* top front center */
0657     SNDRV_CHMAP_TRL,    /* top rear left */
0658     SNDRV_CHMAP_TRR,    /* top rear right */
0659     SNDRV_CHMAP_TRC,    /* top rear center */
0660     /* new definitions for UAC2 */
0661     SNDRV_CHMAP_TFLC,   /* top front left center */
0662     SNDRV_CHMAP_TFRC,   /* top front right center */
0663     SNDRV_CHMAP_TSL,    /* top side left */
0664     SNDRV_CHMAP_TSR,    /* top side right */
0665     SNDRV_CHMAP_LLFE,   /* left LFE */
0666     SNDRV_CHMAP_RLFE,   /* right LFE */
0667     SNDRV_CHMAP_BC,     /* bottom center */
0668     SNDRV_CHMAP_BLC,    /* bottom left center */
0669     SNDRV_CHMAP_BRC,    /* bottom right center */
0670     SNDRV_CHMAP_LAST = SNDRV_CHMAP_BRC,
0671 };
0672 
0673 #define SNDRV_CHMAP_POSITION_MASK   0xffff
0674 #define SNDRV_CHMAP_PHASE_INVERSE   (0x01 << 16)
0675 #define SNDRV_CHMAP_DRIVER_SPEC     (0x02 << 16)
0676 
0677 #define SNDRV_PCM_IOCTL_PVERSION    _IOR('A', 0x00, int)
0678 #define SNDRV_PCM_IOCTL_INFO        _IOR('A', 0x01, struct snd_pcm_info)
0679 #define SNDRV_PCM_IOCTL_TSTAMP      _IOW('A', 0x02, int)
0680 #define SNDRV_PCM_IOCTL_TTSTAMP     _IOW('A', 0x03, int)
0681 #define SNDRV_PCM_IOCTL_USER_PVERSION   _IOW('A', 0x04, int)
0682 #define SNDRV_PCM_IOCTL_HW_REFINE   _IOWR('A', 0x10, struct snd_pcm_hw_params)
0683 #define SNDRV_PCM_IOCTL_HW_PARAMS   _IOWR('A', 0x11, struct snd_pcm_hw_params)
0684 #define SNDRV_PCM_IOCTL_HW_FREE     _IO('A', 0x12)
0685 #define SNDRV_PCM_IOCTL_SW_PARAMS   _IOWR('A', 0x13, struct snd_pcm_sw_params)
0686 #define SNDRV_PCM_IOCTL_STATUS      _IOR('A', 0x20, struct snd_pcm_status)
0687 #define SNDRV_PCM_IOCTL_DELAY       _IOR('A', 0x21, snd_pcm_sframes_t)
0688 #define SNDRV_PCM_IOCTL_HWSYNC      _IO('A', 0x22)
0689 #define __SNDRV_PCM_IOCTL_SYNC_PTR  _IOWR('A', 0x23, struct __snd_pcm_sync_ptr)
0690 #define __SNDRV_PCM_IOCTL_SYNC_PTR64    _IOWR('A', 0x23, struct __snd_pcm_sync_ptr64)
0691 #define SNDRV_PCM_IOCTL_SYNC_PTR    _IOWR('A', 0x23, struct snd_pcm_sync_ptr)
0692 #define SNDRV_PCM_IOCTL_STATUS_EXT  _IOWR('A', 0x24, struct snd_pcm_status)
0693 #define SNDRV_PCM_IOCTL_CHANNEL_INFO    _IOR('A', 0x32, struct snd_pcm_channel_info)
0694 #define SNDRV_PCM_IOCTL_PREPARE     _IO('A', 0x40)
0695 #define SNDRV_PCM_IOCTL_RESET       _IO('A', 0x41)
0696 #define SNDRV_PCM_IOCTL_START       _IO('A', 0x42)
0697 #define SNDRV_PCM_IOCTL_DROP        _IO('A', 0x43)
0698 #define SNDRV_PCM_IOCTL_DRAIN       _IO('A', 0x44)
0699 #define SNDRV_PCM_IOCTL_PAUSE       _IOW('A', 0x45, int)
0700 #define SNDRV_PCM_IOCTL_REWIND      _IOW('A', 0x46, snd_pcm_uframes_t)
0701 #define SNDRV_PCM_IOCTL_RESUME      _IO('A', 0x47)
0702 #define SNDRV_PCM_IOCTL_XRUN        _IO('A', 0x48)
0703 #define SNDRV_PCM_IOCTL_FORWARD     _IOW('A', 0x49, snd_pcm_uframes_t)
0704 #define SNDRV_PCM_IOCTL_WRITEI_FRAMES   _IOW('A', 0x50, struct snd_xferi)
0705 #define SNDRV_PCM_IOCTL_READI_FRAMES    _IOR('A', 0x51, struct snd_xferi)
0706 #define SNDRV_PCM_IOCTL_WRITEN_FRAMES   _IOW('A', 0x52, struct snd_xfern)
0707 #define SNDRV_PCM_IOCTL_READN_FRAMES    _IOR('A', 0x53, struct snd_xfern)
0708 #define SNDRV_PCM_IOCTL_LINK        _IOW('A', 0x60, int)
0709 #define SNDRV_PCM_IOCTL_UNLINK      _IO('A', 0x61)
0710 
0711 /*****************************************************************************
0712  *                                                                           *
0713  *                            MIDI v1.0 interface                            *
0714  *                                                                           *
0715  *****************************************************************************/
0716 
0717 /*
0718  *  Raw MIDI section - /dev/snd/midi??
0719  */
0720 
0721 #define SNDRV_RAWMIDI_VERSION       SNDRV_PROTOCOL_VERSION(2, 0, 2)
0722 
0723 enum {
0724     SNDRV_RAWMIDI_STREAM_OUTPUT = 0,
0725     SNDRV_RAWMIDI_STREAM_INPUT,
0726     SNDRV_RAWMIDI_STREAM_LAST = SNDRV_RAWMIDI_STREAM_INPUT,
0727 };
0728 
0729 #define SNDRV_RAWMIDI_INFO_OUTPUT       0x00000001
0730 #define SNDRV_RAWMIDI_INFO_INPUT        0x00000002
0731 #define SNDRV_RAWMIDI_INFO_DUPLEX       0x00000004
0732 
0733 struct snd_rawmidi_info {
0734     unsigned int device;        /* RO/WR (control): device number */
0735     unsigned int subdevice;     /* RO/WR (control): subdevice number */
0736     int stream;         /* WR: stream */
0737     int card;           /* R: card number */
0738     unsigned int flags;     /* SNDRV_RAWMIDI_INFO_XXXX */
0739     unsigned char id[64];       /* ID (user selectable) */
0740     unsigned char name[80];     /* name of device */
0741     unsigned char subname[32];  /* name of active or selected subdevice */
0742     unsigned int subdevices_count;
0743     unsigned int subdevices_avail;
0744     unsigned char reserved[64]; /* reserved for future use */
0745 };
0746 
0747 #define SNDRV_RAWMIDI_MODE_FRAMING_MASK     (7<<0)
0748 #define SNDRV_RAWMIDI_MODE_FRAMING_SHIFT    0
0749 #define SNDRV_RAWMIDI_MODE_FRAMING_NONE     (0<<0)
0750 #define SNDRV_RAWMIDI_MODE_FRAMING_TSTAMP   (1<<0)
0751 #define SNDRV_RAWMIDI_MODE_CLOCK_MASK       (7<<3)
0752 #define SNDRV_RAWMIDI_MODE_CLOCK_SHIFT      3
0753 #define SNDRV_RAWMIDI_MODE_CLOCK_NONE       (0<<3)
0754 #define SNDRV_RAWMIDI_MODE_CLOCK_REALTIME   (1<<3)
0755 #define SNDRV_RAWMIDI_MODE_CLOCK_MONOTONIC  (2<<3)
0756 #define SNDRV_RAWMIDI_MODE_CLOCK_MONOTONIC_RAW  (3<<3)
0757 
0758 #define SNDRV_RAWMIDI_FRAMING_DATA_LENGTH 16
0759 
0760 struct snd_rawmidi_framing_tstamp {
0761     /* For now, frame_type is always 0. Midi 2.0 is expected to add new
0762      * types here. Applications are expected to skip unknown frame types.
0763      */
0764     __u8 frame_type;
0765     __u8 length; /* number of valid bytes in data field */
0766     __u8 reserved[2];
0767     __u32 tv_nsec;      /* nanoseconds */
0768     __u64 tv_sec;       /* seconds */
0769     __u8 data[SNDRV_RAWMIDI_FRAMING_DATA_LENGTH];
0770 } __packed;
0771 
0772 struct snd_rawmidi_params {
0773     int stream;
0774     size_t buffer_size;     /* queue size in bytes */
0775     size_t avail_min;       /* minimum avail bytes for wakeup */
0776     unsigned int no_active_sensing: 1; /* do not send active sensing byte in close() */
0777     unsigned int mode;      /* For input data only, frame incoming data */
0778     unsigned char reserved[12]; /* reserved for future use */
0779 };
0780 
0781 #ifndef __KERNEL__
0782 struct snd_rawmidi_status {
0783     int stream;
0784     __time_pad pad1;
0785     struct timespec tstamp;     /* Timestamp */
0786     size_t avail;           /* available bytes */
0787     size_t xruns;           /* count of overruns since last status (in bytes) */
0788     unsigned char reserved[16]; /* reserved for future use */
0789 };
0790 #endif
0791 
0792 #define SNDRV_RAWMIDI_IOCTL_PVERSION    _IOR('W', 0x00, int)
0793 #define SNDRV_RAWMIDI_IOCTL_INFO    _IOR('W', 0x01, struct snd_rawmidi_info)
0794 #define SNDRV_RAWMIDI_IOCTL_USER_PVERSION _IOW('W', 0x02, int)
0795 #define SNDRV_RAWMIDI_IOCTL_PARAMS  _IOWR('W', 0x10, struct snd_rawmidi_params)
0796 #define SNDRV_RAWMIDI_IOCTL_STATUS  _IOWR('W', 0x20, struct snd_rawmidi_status)
0797 #define SNDRV_RAWMIDI_IOCTL_DROP    _IOW('W', 0x30, int)
0798 #define SNDRV_RAWMIDI_IOCTL_DRAIN   _IOW('W', 0x31, int)
0799 
0800 /*
0801  *  Timer section - /dev/snd/timer
0802  */
0803 
0804 #define SNDRV_TIMER_VERSION     SNDRV_PROTOCOL_VERSION(2, 0, 7)
0805 
0806 enum {
0807     SNDRV_TIMER_CLASS_NONE = -1,
0808     SNDRV_TIMER_CLASS_SLAVE = 0,
0809     SNDRV_TIMER_CLASS_GLOBAL,
0810     SNDRV_TIMER_CLASS_CARD,
0811     SNDRV_TIMER_CLASS_PCM,
0812     SNDRV_TIMER_CLASS_LAST = SNDRV_TIMER_CLASS_PCM,
0813 };
0814 
0815 /* slave timer classes */
0816 enum {
0817     SNDRV_TIMER_SCLASS_NONE = 0,
0818     SNDRV_TIMER_SCLASS_APPLICATION,
0819     SNDRV_TIMER_SCLASS_SEQUENCER,       /* alias */
0820     SNDRV_TIMER_SCLASS_OSS_SEQUENCER,   /* alias */
0821     SNDRV_TIMER_SCLASS_LAST = SNDRV_TIMER_SCLASS_OSS_SEQUENCER,
0822 };
0823 
0824 /* global timers (device member) */
0825 #define SNDRV_TIMER_GLOBAL_SYSTEM   0
0826 #define SNDRV_TIMER_GLOBAL_RTC      1   /* unused */
0827 #define SNDRV_TIMER_GLOBAL_HPET     2
0828 #define SNDRV_TIMER_GLOBAL_HRTIMER  3
0829 
0830 /* info flags */
0831 #define SNDRV_TIMER_FLG_SLAVE       (1<<0)  /* cannot be controlled */
0832 
0833 struct snd_timer_id {
0834     int dev_class;
0835     int dev_sclass;
0836     int card;
0837     int device;
0838     int subdevice;
0839 };
0840 
0841 struct snd_timer_ginfo {
0842     struct snd_timer_id tid;    /* requested timer ID */
0843     unsigned int flags;     /* timer flags - SNDRV_TIMER_FLG_* */
0844     int card;           /* card number */
0845     unsigned char id[64];       /* timer identification */
0846     unsigned char name[80];     /* timer name */
0847     unsigned long reserved0;    /* reserved for future use */
0848     unsigned long resolution;   /* average period resolution in ns */
0849     unsigned long resolution_min;   /* minimal period resolution in ns */
0850     unsigned long resolution_max;   /* maximal period resolution in ns */
0851     unsigned int clients;       /* active timer clients */
0852     unsigned char reserved[32];
0853 };
0854 
0855 struct snd_timer_gparams {
0856     struct snd_timer_id tid;    /* requested timer ID */
0857     unsigned long period_num;   /* requested precise period duration (in seconds) - numerator */
0858     unsigned long period_den;   /* requested precise period duration (in seconds) - denominator */
0859     unsigned char reserved[32];
0860 };
0861 
0862 struct snd_timer_gstatus {
0863     struct snd_timer_id tid;    /* requested timer ID */
0864     unsigned long resolution;   /* current period resolution in ns */
0865     unsigned long resolution_num;   /* precise current period resolution (in seconds) - numerator */
0866     unsigned long resolution_den;   /* precise current period resolution (in seconds) - denominator */
0867     unsigned char reserved[32];
0868 };
0869 
0870 struct snd_timer_select {
0871     struct snd_timer_id id; /* bind to timer ID */
0872     unsigned char reserved[32]; /* reserved */
0873 };
0874 
0875 struct snd_timer_info {
0876     unsigned int flags;     /* timer flags - SNDRV_TIMER_FLG_* */
0877     int card;           /* card number */
0878     unsigned char id[64];       /* timer identificator */
0879     unsigned char name[80];     /* timer name */
0880     unsigned long reserved0;    /* reserved for future use */
0881     unsigned long resolution;   /* average period resolution in ns */
0882     unsigned char reserved[64]; /* reserved */
0883 };
0884 
0885 #define SNDRV_TIMER_PSFLG_AUTO      (1<<0)  /* auto start, otherwise one-shot */
0886 #define SNDRV_TIMER_PSFLG_EXCLUSIVE (1<<1)  /* exclusive use, precise start/stop/pause/continue */
0887 #define SNDRV_TIMER_PSFLG_EARLY_EVENT   (1<<2)  /* write early event to the poll queue */
0888 
0889 struct snd_timer_params {
0890     unsigned int flags;     /* flags - SNDRV_TIMER_PSFLG_* */
0891     unsigned int ticks;     /* requested resolution in ticks */
0892     unsigned int queue_size;    /* total size of queue (32-1024) */
0893     unsigned int reserved0;     /* reserved, was: failure locations */
0894     unsigned int filter;        /* event filter (bitmask of SNDRV_TIMER_EVENT_*) */
0895     unsigned char reserved[60]; /* reserved */
0896 };
0897 
0898 #ifndef __KERNEL__
0899 struct snd_timer_status {
0900     struct timespec tstamp;     /* Timestamp - last update */
0901     unsigned int resolution;    /* current period resolution in ns */
0902     unsigned int lost;      /* counter of master tick lost */
0903     unsigned int overrun;       /* count of read queue overruns */
0904     unsigned int queue;     /* used queue size */
0905     unsigned char reserved[64]; /* reserved */
0906 };
0907 #endif
0908 
0909 #define SNDRV_TIMER_IOCTL_PVERSION  _IOR('T', 0x00, int)
0910 #define SNDRV_TIMER_IOCTL_NEXT_DEVICE   _IOWR('T', 0x01, struct snd_timer_id)
0911 #define SNDRV_TIMER_IOCTL_TREAD_OLD _IOW('T', 0x02, int)
0912 #define SNDRV_TIMER_IOCTL_GINFO     _IOWR('T', 0x03, struct snd_timer_ginfo)
0913 #define SNDRV_TIMER_IOCTL_GPARAMS   _IOW('T', 0x04, struct snd_timer_gparams)
0914 #define SNDRV_TIMER_IOCTL_GSTATUS   _IOWR('T', 0x05, struct snd_timer_gstatus)
0915 #define SNDRV_TIMER_IOCTL_SELECT    _IOW('T', 0x10, struct snd_timer_select)
0916 #define SNDRV_TIMER_IOCTL_INFO      _IOR('T', 0x11, struct snd_timer_info)
0917 #define SNDRV_TIMER_IOCTL_PARAMS    _IOW('T', 0x12, struct snd_timer_params)
0918 #define SNDRV_TIMER_IOCTL_STATUS    _IOR('T', 0x14, struct snd_timer_status)
0919 /* The following four ioctls are changed since 1.0.9 due to confliction */
0920 #define SNDRV_TIMER_IOCTL_START     _IO('T', 0xa0)
0921 #define SNDRV_TIMER_IOCTL_STOP      _IO('T', 0xa1)
0922 #define SNDRV_TIMER_IOCTL_CONTINUE  _IO('T', 0xa2)
0923 #define SNDRV_TIMER_IOCTL_PAUSE     _IO('T', 0xa3)
0924 #define SNDRV_TIMER_IOCTL_TREAD64   _IOW('T', 0xa4, int)
0925 
0926 #if __BITS_PER_LONG == 64
0927 #define SNDRV_TIMER_IOCTL_TREAD SNDRV_TIMER_IOCTL_TREAD_OLD
0928 #else
0929 #define SNDRV_TIMER_IOCTL_TREAD ((sizeof(__kernel_long_t) >= sizeof(time_t)) ? \
0930                  SNDRV_TIMER_IOCTL_TREAD_OLD : \
0931                  SNDRV_TIMER_IOCTL_TREAD64)
0932 #endif
0933 
0934 struct snd_timer_read {
0935     unsigned int resolution;
0936     unsigned int ticks;
0937 };
0938 
0939 enum {
0940     SNDRV_TIMER_EVENT_RESOLUTION = 0,   /* val = resolution in ns */
0941     SNDRV_TIMER_EVENT_TICK,         /* val = ticks */
0942     SNDRV_TIMER_EVENT_START,        /* val = resolution in ns */
0943     SNDRV_TIMER_EVENT_STOP,         /* val = 0 */
0944     SNDRV_TIMER_EVENT_CONTINUE,     /* val = resolution in ns */
0945     SNDRV_TIMER_EVENT_PAUSE,        /* val = 0 */
0946     SNDRV_TIMER_EVENT_EARLY,        /* val = 0, early event */
0947     SNDRV_TIMER_EVENT_SUSPEND,      /* val = 0 */
0948     SNDRV_TIMER_EVENT_RESUME,       /* val = resolution in ns */
0949     /* master timer events for slave timer instances */
0950     SNDRV_TIMER_EVENT_MSTART = SNDRV_TIMER_EVENT_START + 10,
0951     SNDRV_TIMER_EVENT_MSTOP = SNDRV_TIMER_EVENT_STOP + 10,
0952     SNDRV_TIMER_EVENT_MCONTINUE = SNDRV_TIMER_EVENT_CONTINUE + 10,
0953     SNDRV_TIMER_EVENT_MPAUSE = SNDRV_TIMER_EVENT_PAUSE + 10,
0954     SNDRV_TIMER_EVENT_MSUSPEND = SNDRV_TIMER_EVENT_SUSPEND + 10,
0955     SNDRV_TIMER_EVENT_MRESUME = SNDRV_TIMER_EVENT_RESUME + 10,
0956 };
0957 
0958 #ifndef __KERNEL__
0959 struct snd_timer_tread {
0960     int event;
0961     __time_pad pad1;
0962     struct timespec tstamp;
0963     unsigned int val;
0964     __time_pad pad2;
0965 };
0966 #endif
0967 
0968 /****************************************************************************
0969  *                                                                          *
0970  *        Section for driver control interface - /dev/snd/control?          *
0971  *                                                                          *
0972  ****************************************************************************/
0973 
0974 #define SNDRV_CTL_VERSION       SNDRV_PROTOCOL_VERSION(2, 0, 8)
0975 
0976 struct snd_ctl_card_info {
0977     int card;           /* card number */
0978     int pad;            /* reserved for future (was type) */
0979     unsigned char id[16];       /* ID of card (user selectable) */
0980     unsigned char driver[16];   /* Driver name */
0981     unsigned char name[32];     /* Short name of soundcard */
0982     unsigned char longname[80]; /* name + info text about soundcard */
0983     unsigned char reserved_[16];    /* reserved for future (was ID of mixer) */
0984     unsigned char mixername[80];    /* visual mixer identification */
0985     unsigned char components[128];  /* card components / fine identification, delimited with one space (AC97 etc..) */
0986 };
0987 
0988 typedef int __bitwise snd_ctl_elem_type_t;
0989 #define SNDRV_CTL_ELEM_TYPE_NONE    ((__force snd_ctl_elem_type_t) 0) /* invalid */
0990 #define SNDRV_CTL_ELEM_TYPE_BOOLEAN ((__force snd_ctl_elem_type_t) 1) /* boolean type */
0991 #define SNDRV_CTL_ELEM_TYPE_INTEGER ((__force snd_ctl_elem_type_t) 2) /* integer type */
0992 #define SNDRV_CTL_ELEM_TYPE_ENUMERATED  ((__force snd_ctl_elem_type_t) 3) /* enumerated type */
0993 #define SNDRV_CTL_ELEM_TYPE_BYTES   ((__force snd_ctl_elem_type_t) 4) /* byte array */
0994 #define SNDRV_CTL_ELEM_TYPE_IEC958  ((__force snd_ctl_elem_type_t) 5) /* IEC958 (S/PDIF) setup */
0995 #define SNDRV_CTL_ELEM_TYPE_INTEGER64   ((__force snd_ctl_elem_type_t) 6) /* 64-bit integer type */
0996 #define SNDRV_CTL_ELEM_TYPE_LAST    SNDRV_CTL_ELEM_TYPE_INTEGER64
0997 
0998 typedef int __bitwise snd_ctl_elem_iface_t;
0999 #define SNDRV_CTL_ELEM_IFACE_CARD   ((__force snd_ctl_elem_iface_t) 0) /* global control */
1000 #define SNDRV_CTL_ELEM_IFACE_HWDEP  ((__force snd_ctl_elem_iface_t) 1) /* hardware dependent device */
1001 #define SNDRV_CTL_ELEM_IFACE_MIXER  ((__force snd_ctl_elem_iface_t) 2) /* virtual mixer device */
1002 #define SNDRV_CTL_ELEM_IFACE_PCM    ((__force snd_ctl_elem_iface_t) 3) /* PCM device */
1003 #define SNDRV_CTL_ELEM_IFACE_RAWMIDI    ((__force snd_ctl_elem_iface_t) 4) /* RawMidi device */
1004 #define SNDRV_CTL_ELEM_IFACE_TIMER  ((__force snd_ctl_elem_iface_t) 5) /* timer device */
1005 #define SNDRV_CTL_ELEM_IFACE_SEQUENCER  ((__force snd_ctl_elem_iface_t) 6) /* sequencer client */
1006 #define SNDRV_CTL_ELEM_IFACE_LAST   SNDRV_CTL_ELEM_IFACE_SEQUENCER
1007 
1008 #define SNDRV_CTL_ELEM_ACCESS_READ      (1<<0)
1009 #define SNDRV_CTL_ELEM_ACCESS_WRITE     (1<<1)
1010 #define SNDRV_CTL_ELEM_ACCESS_READWRITE     (SNDRV_CTL_ELEM_ACCESS_READ|SNDRV_CTL_ELEM_ACCESS_WRITE)
1011 #define SNDRV_CTL_ELEM_ACCESS_VOLATILE      (1<<2)  /* control value may be changed without a notification */
1012 /* (1 << 3) is unused. */
1013 #define SNDRV_CTL_ELEM_ACCESS_TLV_READ      (1<<4)  /* TLV read is possible */
1014 #define SNDRV_CTL_ELEM_ACCESS_TLV_WRITE     (1<<5)  /* TLV write is possible */
1015 #define SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE (SNDRV_CTL_ELEM_ACCESS_TLV_READ|SNDRV_CTL_ELEM_ACCESS_TLV_WRITE)
1016 #define SNDRV_CTL_ELEM_ACCESS_TLV_COMMAND   (1<<6)  /* TLV command is possible */
1017 #define SNDRV_CTL_ELEM_ACCESS_INACTIVE      (1<<8)  /* control does actually nothing, but may be updated */
1018 #define SNDRV_CTL_ELEM_ACCESS_LOCK      (1<<9)  /* write lock */
1019 #define SNDRV_CTL_ELEM_ACCESS_OWNER     (1<<10) /* write lock owner */
1020 #define SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK  (1<<28) /* kernel use a TLV callback */
1021 #define SNDRV_CTL_ELEM_ACCESS_USER      (1<<29) /* user space element */
1022 /* bits 30 and 31 are obsoleted (for indirect access) */
1023 
1024 /* for further details see the ACPI and PCI power management specification */
1025 #define SNDRV_CTL_POWER_D0      0x0000  /* full On */
1026 #define SNDRV_CTL_POWER_D1      0x0100  /* partial On */
1027 #define SNDRV_CTL_POWER_D2      0x0200  /* partial On */
1028 #define SNDRV_CTL_POWER_D3      0x0300  /* Off */
1029 #define SNDRV_CTL_POWER_D3hot       (SNDRV_CTL_POWER_D3|0x0000) /* Off, with power */
1030 #define SNDRV_CTL_POWER_D3cold      (SNDRV_CTL_POWER_D3|0x0001) /* Off, without power */
1031 
1032 #define SNDRV_CTL_ELEM_ID_NAME_MAXLEN   44
1033 
1034 struct snd_ctl_elem_id {
1035     unsigned int numid;     /* numeric identifier, zero = invalid */
1036     snd_ctl_elem_iface_t iface; /* interface identifier */
1037     unsigned int device;        /* device/client number */
1038     unsigned int subdevice;     /* subdevice (substream) number */
1039     unsigned char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];      /* ASCII name of item */
1040     unsigned int index;     /* index of item */
1041 };
1042 
1043 struct snd_ctl_elem_list {
1044     unsigned int offset;        /* W: first element ID to get */
1045     unsigned int space;     /* W: count of element IDs to get */
1046     unsigned int used;      /* R: count of element IDs set */
1047     unsigned int count;     /* R: count of all elements */
1048     struct snd_ctl_elem_id __user *pids; /* R: IDs */
1049     unsigned char reserved[50];
1050 };
1051 
1052 struct snd_ctl_elem_info {
1053     struct snd_ctl_elem_id id;  /* W: element ID */
1054     snd_ctl_elem_type_t type;   /* R: value type - SNDRV_CTL_ELEM_TYPE_* */
1055     unsigned int access;        /* R: value access (bitmask) - SNDRV_CTL_ELEM_ACCESS_* */
1056     unsigned int count;     /* count of values */
1057     __kernel_pid_t owner;       /* owner's PID of this control */
1058     union {
1059         struct {
1060             long min;       /* R: minimum value */
1061             long max;       /* R: maximum value */
1062             long step;      /* R: step (0 variable) */
1063         } integer;
1064         struct {
1065             long long min;      /* R: minimum value */
1066             long long max;      /* R: maximum value */
1067             long long step;     /* R: step (0 variable) */
1068         } integer64;
1069         struct {
1070             unsigned int items; /* R: number of items */
1071             unsigned int item;  /* W: item number */
1072             char name[64];      /* R: value name */
1073             __u64 names_ptr;    /* W: names list (ELEM_ADD only) */
1074             unsigned int names_length;
1075         } enumerated;
1076         unsigned char reserved[128];
1077     } value;
1078     unsigned char reserved[64];
1079 };
1080 
1081 struct snd_ctl_elem_value {
1082     struct snd_ctl_elem_id id;  /* W: element ID */
1083     unsigned int indirect: 1;   /* W: indirect access - obsoleted */
1084     union {
1085         union {
1086             long value[128];
1087             long *value_ptr;    /* obsoleted */
1088         } integer;
1089         union {
1090             long long value[64];
1091             long long *value_ptr;   /* obsoleted */
1092         } integer64;
1093         union {
1094             unsigned int item[128];
1095             unsigned int *item_ptr; /* obsoleted */
1096         } enumerated;
1097         union {
1098             unsigned char data[512];
1099             unsigned char *data_ptr;    /* obsoleted */
1100         } bytes;
1101         struct snd_aes_iec958 iec958;
1102     } value;        /* RO */
1103     unsigned char reserved[128];
1104 };
1105 
1106 struct snd_ctl_tlv {
1107     unsigned int numid; /* control element numeric identification */
1108     unsigned int length;    /* in bytes aligned to 4 */
1109     unsigned int tlv[]; /* first TLV */
1110 };
1111 
1112 #define SNDRV_CTL_IOCTL_PVERSION    _IOR('U', 0x00, int)
1113 #define SNDRV_CTL_IOCTL_CARD_INFO   _IOR('U', 0x01, struct snd_ctl_card_info)
1114 #define SNDRV_CTL_IOCTL_ELEM_LIST   _IOWR('U', 0x10, struct snd_ctl_elem_list)
1115 #define SNDRV_CTL_IOCTL_ELEM_INFO   _IOWR('U', 0x11, struct snd_ctl_elem_info)
1116 #define SNDRV_CTL_IOCTL_ELEM_READ   _IOWR('U', 0x12, struct snd_ctl_elem_value)
1117 #define SNDRV_CTL_IOCTL_ELEM_WRITE  _IOWR('U', 0x13, struct snd_ctl_elem_value)
1118 #define SNDRV_CTL_IOCTL_ELEM_LOCK   _IOW('U', 0x14, struct snd_ctl_elem_id)
1119 #define SNDRV_CTL_IOCTL_ELEM_UNLOCK _IOW('U', 0x15, struct snd_ctl_elem_id)
1120 #define SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS _IOWR('U', 0x16, int)
1121 #define SNDRV_CTL_IOCTL_ELEM_ADD    _IOWR('U', 0x17, struct snd_ctl_elem_info)
1122 #define SNDRV_CTL_IOCTL_ELEM_REPLACE    _IOWR('U', 0x18, struct snd_ctl_elem_info)
1123 #define SNDRV_CTL_IOCTL_ELEM_REMOVE _IOWR('U', 0x19, struct snd_ctl_elem_id)
1124 #define SNDRV_CTL_IOCTL_TLV_READ    _IOWR('U', 0x1a, struct snd_ctl_tlv)
1125 #define SNDRV_CTL_IOCTL_TLV_WRITE   _IOWR('U', 0x1b, struct snd_ctl_tlv)
1126 #define SNDRV_CTL_IOCTL_TLV_COMMAND _IOWR('U', 0x1c, struct snd_ctl_tlv)
1127 #define SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE _IOWR('U', 0x20, int)
1128 #define SNDRV_CTL_IOCTL_HWDEP_INFO  _IOR('U', 0x21, struct snd_hwdep_info)
1129 #define SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE _IOR('U', 0x30, int)
1130 #define SNDRV_CTL_IOCTL_PCM_INFO    _IOWR('U', 0x31, struct snd_pcm_info)
1131 #define SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE _IOW('U', 0x32, int)
1132 #define SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE _IOWR('U', 0x40, int)
1133 #define SNDRV_CTL_IOCTL_RAWMIDI_INFO    _IOWR('U', 0x41, struct snd_rawmidi_info)
1134 #define SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE _IOW('U', 0x42, int)
1135 #define SNDRV_CTL_IOCTL_POWER       _IOWR('U', 0xd0, int)
1136 #define SNDRV_CTL_IOCTL_POWER_STATE _IOR('U', 0xd1, int)
1137 
1138 /*
1139  *  Read interface.
1140  */
1141 
1142 enum sndrv_ctl_event_type {
1143     SNDRV_CTL_EVENT_ELEM = 0,
1144     SNDRV_CTL_EVENT_LAST = SNDRV_CTL_EVENT_ELEM,
1145 };
1146 
1147 #define SNDRV_CTL_EVENT_MASK_VALUE  (1<<0)  /* element value was changed */
1148 #define SNDRV_CTL_EVENT_MASK_INFO   (1<<1)  /* element info was changed */
1149 #define SNDRV_CTL_EVENT_MASK_ADD    (1<<2)  /* element was added */
1150 #define SNDRV_CTL_EVENT_MASK_TLV    (1<<3)  /* element TLV tree was changed */
1151 #define SNDRV_CTL_EVENT_MASK_REMOVE (~0U)   /* element was removed */
1152 
1153 struct snd_ctl_event {
1154     int type;   /* event type - SNDRV_CTL_EVENT_* */
1155     union {
1156         struct {
1157             unsigned int mask;
1158             struct snd_ctl_elem_id id;
1159         } elem;
1160         unsigned char data8[60];
1161     } data;
1162 };
1163 
1164 /*
1165  *  Control names
1166  */
1167 
1168 #define SNDRV_CTL_NAME_NONE             ""
1169 #define SNDRV_CTL_NAME_PLAYBACK             "Playback "
1170 #define SNDRV_CTL_NAME_CAPTURE              "Capture "
1171 
1172 #define SNDRV_CTL_NAME_IEC958_NONE          ""
1173 #define SNDRV_CTL_NAME_IEC958_SWITCH            "Switch"
1174 #define SNDRV_CTL_NAME_IEC958_VOLUME            "Volume"
1175 #define SNDRV_CTL_NAME_IEC958_DEFAULT           "Default"
1176 #define SNDRV_CTL_NAME_IEC958_MASK          "Mask"
1177 #define SNDRV_CTL_NAME_IEC958_CON_MASK          "Con Mask"
1178 #define SNDRV_CTL_NAME_IEC958_PRO_MASK          "Pro Mask"
1179 #define SNDRV_CTL_NAME_IEC958_PCM_STREAM        "PCM Stream"
1180 #define SNDRV_CTL_NAME_IEC958(expl,direction,what)  "IEC958 " expl SNDRV_CTL_NAME_##direction SNDRV_CTL_NAME_IEC958_##what
1181 
1182 #endif /* _UAPI__SOUND_ASOUND_H */
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