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#ifndef _UAPI__SOUND_ASOUND_H
   9#define _UAPI__SOUND_ASOUND_H
  10
  11#if defined(__KERNEL__) || defined(__linux__)
  12#include <linux/types.h>
  13#include <asm/byteorder.h>
  14#else
  15#include <endian.h>
  16#include <sys/ioctl.h>
  17#endif
  18
  19#ifndef __KERNEL__
  20#include <stdlib.h>
  21#include <time.h>
  22#endif
  23
  24/*
  25 *  protocol version
  26 */
  27
  28#define SNDRV_PROTOCOL_VERSION(major, minor, subminor) (((major)<<16)|((minor)<<8)|(subminor))
  29#define SNDRV_PROTOCOL_MAJOR(version) (((version)>>16)&0xffff)
  30#define SNDRV_PROTOCOL_MINOR(version) (((version)>>8)&0xff)
  31#define SNDRV_PROTOCOL_MICRO(version) ((version)&0xff)
  32#define SNDRV_PROTOCOL_INCOMPATIBLE(kversion, uversion) \
  33	(SNDRV_PROTOCOL_MAJOR(kversion) != SNDRV_PROTOCOL_MAJOR(uversion) || \
  34	 (SNDRV_PROTOCOL_MAJOR(kversion) == SNDRV_PROTOCOL_MAJOR(uversion) && \
  35	   SNDRV_PROTOCOL_MINOR(kversion) != SNDRV_PROTOCOL_MINOR(uversion)))
  36
  37/****************************************************************************
  38 *                                                                          *
  39 *        Digital audio interface					    *
  40 *                                                                          *
  41 ****************************************************************************/
  42
  43#define AES_IEC958_STATUS_SIZE		24
  44
  45struct snd_aes_iec958 {
  46	unsigned char status[AES_IEC958_STATUS_SIZE]; /* AES/IEC958 channel status bits */
  47	unsigned char subcode[147];	/* AES/IEC958 subcode bits */
  48	unsigned char pad;		/* nothing */
  49	unsigned char dig_subframe[4];	/* AES/IEC958 subframe bits */
  50};
  51
  52/****************************************************************************
  53 *                                                                          *
  54 *        CEA-861 Audio InfoFrame. Used in HDMI and DisplayPort		    *
  55 *                                                                          *
  56 ****************************************************************************/
  57
  58struct snd_cea_861_aud_if {
  59	unsigned char db1_ct_cc; /* coding type and channel count */
  60	unsigned char db2_sf_ss; /* sample frequency and size */
  61	unsigned char db3; /* not used, all zeros */
  62	unsigned char db4_ca; /* channel allocation code */
  63	unsigned char db5_dminh_lsv; /* downmix inhibit & level-shit values */
  64};
  65
  66/****************************************************************************
  67 *                                                                          *
  68 *      Section for driver hardware dependent interface - /dev/snd/hw?      *
  69 *                                                                          *
  70 ****************************************************************************/
  71
  72#define SNDRV_HWDEP_VERSION		SNDRV_PROTOCOL_VERSION(1, 0, 1)
  73
  74enum {
  75	SNDRV_HWDEP_IFACE_OPL2 = 0,
  76	SNDRV_HWDEP_IFACE_OPL3,
  77	SNDRV_HWDEP_IFACE_OPL4,
  78	SNDRV_HWDEP_IFACE_SB16CSP,	/* Creative Signal Processor */
  79	SNDRV_HWDEP_IFACE_EMU10K1,	/* FX8010 processor in EMU10K1 chip */
  80	SNDRV_HWDEP_IFACE_YSS225,	/* Yamaha FX processor */
  81	SNDRV_HWDEP_IFACE_ICS2115,	/* Wavetable synth */
  82	SNDRV_HWDEP_IFACE_SSCAPE,	/* Ensoniq SoundScape ISA card (MC68EC000) */
  83	SNDRV_HWDEP_IFACE_VX,		/* Digigram VX cards */
  84	SNDRV_HWDEP_IFACE_MIXART,	/* Digigram miXart cards */
  85	SNDRV_HWDEP_IFACE_USX2Y,	/* Tascam US122, US224 & US428 usb */
  86	SNDRV_HWDEP_IFACE_EMUX_WAVETABLE, /* EmuX wavetable */
  87	SNDRV_HWDEP_IFACE_BLUETOOTH,	/* Bluetooth audio */
  88	SNDRV_HWDEP_IFACE_USX2Y_PCM,	/* Tascam US122, US224 & US428 rawusb pcm */
  89	SNDRV_HWDEP_IFACE_PCXHR,	/* Digigram PCXHR */
  90	SNDRV_HWDEP_IFACE_SB_RC,	/* SB Extigy/Audigy2NX remote control */
  91	SNDRV_HWDEP_IFACE_HDA,		/* HD-audio */
  92	SNDRV_HWDEP_IFACE_USB_STREAM,	/* direct access to usb stream */
  93	SNDRV_HWDEP_IFACE_FW_DICE,	/* TC DICE FireWire device */
  94	SNDRV_HWDEP_IFACE_FW_FIREWORKS,	/* Echo Audio Fireworks based device */
  95	SNDRV_HWDEP_IFACE_FW_BEBOB,	/* BridgeCo BeBoB based device */
  96	SNDRV_HWDEP_IFACE_FW_OXFW,	/* Oxford OXFW970/971 based device */
  97	SNDRV_HWDEP_IFACE_FW_DIGI00X,	/* Digidesign Digi 002/003 family */
  98	SNDRV_HWDEP_IFACE_FW_TASCAM,	/* TASCAM FireWire series */
  99	SNDRV_HWDEP_IFACE_LINE6,	/* Line6 USB processors */
 100	SNDRV_HWDEP_IFACE_FW_MOTU,	/* MOTU FireWire series */
 101	SNDRV_HWDEP_IFACE_FW_FIREFACE,	/* RME Fireface series */
 102
 103	/* Don't forget to change the following: */
 104	SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_FW_FIREFACE
 105};
 106
 107struct snd_hwdep_info {
 108	unsigned int device;		/* WR: device number */
 109	int card;			/* R: card number */
 110	unsigned char id[64];		/* ID (user selectable) */
 111	unsigned char name[80];		/* hwdep name */
 112	int iface;			/* hwdep interface */
 113	unsigned char reserved[64];	/* reserved for future */
 114};
 115
 116/* generic DSP loader */
 117struct snd_hwdep_dsp_status {
 118	unsigned int version;		/* R: driver-specific version */
 119	unsigned char id[32];		/* R: driver-specific ID string */
 120	unsigned int num_dsps;		/* R: number of DSP images to transfer */
 121	unsigned int dsp_loaded;	/* R: bit flags indicating the loaded DSPs */
 122	unsigned int chip_ready;	/* R: 1 = initialization finished */
 123	unsigned char reserved[16];	/* reserved for future use */
 124};
 125
 126struct snd_hwdep_dsp_image {
 127	unsigned int index;		/* W: DSP index */
 128	unsigned char name[64];		/* W: ID (e.g. file name) */
 129	unsigned char __user *image;	/* W: binary image */
 130	size_t length;			/* W: size of image in bytes */
 131	unsigned long driver_data;	/* W: driver-specific data */
 132};
 133
 134#define SNDRV_HWDEP_IOCTL_PVERSION	_IOR ('H', 0x00, int)
 135#define SNDRV_HWDEP_IOCTL_INFO		_IOR ('H', 0x01, struct snd_hwdep_info)
 136#define SNDRV_HWDEP_IOCTL_DSP_STATUS	_IOR('H', 0x02, struct snd_hwdep_dsp_status)
 137#define SNDRV_HWDEP_IOCTL_DSP_LOAD	_IOW('H', 0x03, struct snd_hwdep_dsp_image)
 138
 139/*****************************************************************************
 140 *                                                                           *
 141 *             Digital Audio (PCM) interface - /dev/snd/pcm??                *
 142 *                                                                           *
 143 *****************************************************************************/
 144
 145#define SNDRV_PCM_VERSION		SNDRV_PROTOCOL_VERSION(2, 0, 15)
 146
 147typedef unsigned long snd_pcm_uframes_t;
 148typedef signed long snd_pcm_sframes_t;
 149
 150enum {
 151	SNDRV_PCM_CLASS_GENERIC = 0,	/* standard mono or stereo device */
 152	SNDRV_PCM_CLASS_MULTI,		/* multichannel device */
 153	SNDRV_PCM_CLASS_MODEM,		/* software modem class */
 154	SNDRV_PCM_CLASS_DIGITIZER,	/* digitizer class */
 155	/* Don't forget to change the following: */
 156	SNDRV_PCM_CLASS_LAST = SNDRV_PCM_CLASS_DIGITIZER,
 157};
 158
 159enum {
 160	SNDRV_PCM_SUBCLASS_GENERIC_MIX = 0, /* mono or stereo subdevices are mixed together */
 161	SNDRV_PCM_SUBCLASS_MULTI_MIX,	/* multichannel subdevices are mixed together */
 162	/* Don't forget to change the following: */
 163	SNDRV_PCM_SUBCLASS_LAST = SNDRV_PCM_SUBCLASS_MULTI_MIX,
 164};
 165
 166enum {
 167	SNDRV_PCM_STREAM_PLAYBACK = 0,
 168	SNDRV_PCM_STREAM_CAPTURE,
 169	SNDRV_PCM_STREAM_LAST = SNDRV_PCM_STREAM_CAPTURE,
 170};
 171
 172typedef int __bitwise snd_pcm_access_t;
 173#define	SNDRV_PCM_ACCESS_MMAP_INTERLEAVED	((__force snd_pcm_access_t) 0) /* interleaved mmap */
 174#define	SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED	((__force snd_pcm_access_t) 1) /* noninterleaved mmap */
 175#define	SNDRV_PCM_ACCESS_MMAP_COMPLEX		((__force snd_pcm_access_t) 2) /* complex mmap */
 176#define	SNDRV_PCM_ACCESS_RW_INTERLEAVED		((__force snd_pcm_access_t) 3) /* readi/writei */
 177#define	SNDRV_PCM_ACCESS_RW_NONINTERLEAVED	((__force snd_pcm_access_t) 4) /* readn/writen */
 178#define	SNDRV_PCM_ACCESS_LAST		SNDRV_PCM_ACCESS_RW_NONINTERLEAVED
 179
 180typedef int __bitwise snd_pcm_format_t;
 181#define	SNDRV_PCM_FORMAT_S8	((__force snd_pcm_format_t) 0)
 182#define	SNDRV_PCM_FORMAT_U8	((__force snd_pcm_format_t) 1)
 183#define	SNDRV_PCM_FORMAT_S16_LE	((__force snd_pcm_format_t) 2)
 184#define	SNDRV_PCM_FORMAT_S16_BE	((__force snd_pcm_format_t) 3)
 185#define	SNDRV_PCM_FORMAT_U16_LE	((__force snd_pcm_format_t) 4)
 186#define	SNDRV_PCM_FORMAT_U16_BE	((__force snd_pcm_format_t) 5)
 187#define	SNDRV_PCM_FORMAT_S24_LE	((__force snd_pcm_format_t) 6) /* low three bytes */
 188#define	SNDRV_PCM_FORMAT_S24_BE	((__force snd_pcm_format_t) 7) /* low three bytes */
 189#define	SNDRV_PCM_FORMAT_U24_LE	((__force snd_pcm_format_t) 8) /* low three bytes */
 190#define	SNDRV_PCM_FORMAT_U24_BE	((__force snd_pcm_format_t) 9) /* low three bytes */
 191/*
 192 * For S32/U32 formats, 'msbits' hardware parameter is often used to deliver information about the
 193 * available bit count in most significant bit. It's for the case of so-called 'left-justified' or
 194 * `right-padding` sample which has less width than 32 bit.
 195 */
 196#define	SNDRV_PCM_FORMAT_S32_LE	((__force snd_pcm_format_t) 10)
 197#define	SNDRV_PCM_FORMAT_S32_BE	((__force snd_pcm_format_t) 11)
 198#define	SNDRV_PCM_FORMAT_U32_LE	((__force snd_pcm_format_t) 12)
 199#define	SNDRV_PCM_FORMAT_U32_BE	((__force snd_pcm_format_t) 13)
 200#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 */
 201#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 */
 202#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 */
 203#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 */
 204#define	SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE ((__force snd_pcm_format_t) 18) /* IEC-958 subframe, Little Endian */
 205#define	SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE ((__force snd_pcm_format_t) 19) /* IEC-958 subframe, Big Endian */
 206#define	SNDRV_PCM_FORMAT_MU_LAW		((__force snd_pcm_format_t) 20)
 207#define	SNDRV_PCM_FORMAT_A_LAW		((__force snd_pcm_format_t) 21)
 208#define	SNDRV_PCM_FORMAT_IMA_ADPCM	((__force snd_pcm_format_t) 22)
 209#define	SNDRV_PCM_FORMAT_MPEG		((__force snd_pcm_format_t) 23)
 210#define	SNDRV_PCM_FORMAT_GSM		((__force snd_pcm_format_t) 24)
 211#define	SNDRV_PCM_FORMAT_S20_LE	((__force snd_pcm_format_t) 25) /* in four bytes, LSB justified */
 212#define	SNDRV_PCM_FORMAT_S20_BE	((__force snd_pcm_format_t) 26) /* in four bytes, LSB justified */
 213#define	SNDRV_PCM_FORMAT_U20_LE	((__force snd_pcm_format_t) 27) /* in four bytes, LSB justified */
 214#define	SNDRV_PCM_FORMAT_U20_BE	((__force snd_pcm_format_t) 28) /* in four bytes, LSB justified */
 215/* gap in the numbering for a future standard linear format */
 216#define	SNDRV_PCM_FORMAT_SPECIAL	((__force snd_pcm_format_t) 31)
 217#define	SNDRV_PCM_FORMAT_S24_3LE	((__force snd_pcm_format_t) 32)	/* in three bytes */
 218#define	SNDRV_PCM_FORMAT_S24_3BE	((__force snd_pcm_format_t) 33)	/* in three bytes */
 219#define	SNDRV_PCM_FORMAT_U24_3LE	((__force snd_pcm_format_t) 34)	/* in three bytes */
 220#define	SNDRV_PCM_FORMAT_U24_3BE	((__force snd_pcm_format_t) 35)	/* in three bytes */
 221#define	SNDRV_PCM_FORMAT_S20_3LE	((__force snd_pcm_format_t) 36)	/* in three bytes */
 222#define	SNDRV_PCM_FORMAT_S20_3BE	((__force snd_pcm_format_t) 37)	/* in three bytes */
 223#define	SNDRV_PCM_FORMAT_U20_3LE	((__force snd_pcm_format_t) 38)	/* in three bytes */
 224#define	SNDRV_PCM_FORMAT_U20_3BE	((__force snd_pcm_format_t) 39)	/* in three bytes */
 225#define	SNDRV_PCM_FORMAT_S18_3LE	((__force snd_pcm_format_t) 40)	/* in three bytes */
 226#define	SNDRV_PCM_FORMAT_S18_3BE	((__force snd_pcm_format_t) 41)	/* in three bytes */
 227#define	SNDRV_PCM_FORMAT_U18_3LE	((__force snd_pcm_format_t) 42)	/* in three bytes */
 228#define	SNDRV_PCM_FORMAT_U18_3BE	((__force snd_pcm_format_t) 43)	/* in three bytes */
 229#define	SNDRV_PCM_FORMAT_G723_24	((__force snd_pcm_format_t) 44) /* 8 samples in 3 bytes */
 230#define	SNDRV_PCM_FORMAT_G723_24_1B	((__force snd_pcm_format_t) 45) /* 1 sample in 1 byte */
 231#define	SNDRV_PCM_FORMAT_G723_40	((__force snd_pcm_format_t) 46) /* 8 Samples in 5 bytes */
 232#define	SNDRV_PCM_FORMAT_G723_40_1B	((__force snd_pcm_format_t) 47) /* 1 sample in 1 byte */
 233#define	SNDRV_PCM_FORMAT_DSD_U8		((__force snd_pcm_format_t) 48) /* DSD, 1-byte samples DSD (x8) */
 234#define	SNDRV_PCM_FORMAT_DSD_U16_LE	((__force snd_pcm_format_t) 49) /* DSD, 2-byte samples DSD (x16), little endian */
 235#define	SNDRV_PCM_FORMAT_DSD_U32_LE	((__force snd_pcm_format_t) 50) /* DSD, 4-byte samples DSD (x32), little endian */
 236#define	SNDRV_PCM_FORMAT_DSD_U16_BE	((__force snd_pcm_format_t) 51) /* DSD, 2-byte samples DSD (x16), big endian */
 237#define	SNDRV_PCM_FORMAT_DSD_U32_BE	((__force snd_pcm_format_t) 52) /* DSD, 4-byte samples DSD (x32), big endian */
 238#define	SNDRV_PCM_FORMAT_LAST		SNDRV_PCM_FORMAT_DSD_U32_BE
 239#define	SNDRV_PCM_FORMAT_FIRST		SNDRV_PCM_FORMAT_S8
 240
 241#ifdef SNDRV_LITTLE_ENDIAN
 242#define	SNDRV_PCM_FORMAT_S16		SNDRV_PCM_FORMAT_S16_LE
 243#define	SNDRV_PCM_FORMAT_U16		SNDRV_PCM_FORMAT_U16_LE
 244#define	SNDRV_PCM_FORMAT_S24		SNDRV_PCM_FORMAT_S24_LE
 245#define	SNDRV_PCM_FORMAT_U24		SNDRV_PCM_FORMAT_U24_LE
 246#define	SNDRV_PCM_FORMAT_S32		SNDRV_PCM_FORMAT_S32_LE
 247#define	SNDRV_PCM_FORMAT_U32		SNDRV_PCM_FORMAT_U32_LE
 248#define	SNDRV_PCM_FORMAT_FLOAT		SNDRV_PCM_FORMAT_FLOAT_LE
 249#define	SNDRV_PCM_FORMAT_FLOAT64	SNDRV_PCM_FORMAT_FLOAT64_LE
 250#define	SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE
 251#define	SNDRV_PCM_FORMAT_S20		SNDRV_PCM_FORMAT_S20_LE
 252#define	SNDRV_PCM_FORMAT_U20		SNDRV_PCM_FORMAT_U20_LE
 253#endif
 254#ifdef SNDRV_BIG_ENDIAN
 255#define	SNDRV_PCM_FORMAT_S16		SNDRV_PCM_FORMAT_S16_BE
 256#define	SNDRV_PCM_FORMAT_U16		SNDRV_PCM_FORMAT_U16_BE
 257#define	SNDRV_PCM_FORMAT_S24		SNDRV_PCM_FORMAT_S24_BE
 258#define	SNDRV_PCM_FORMAT_U24		SNDRV_PCM_FORMAT_U24_BE
 259#define	SNDRV_PCM_FORMAT_S32		SNDRV_PCM_FORMAT_S32_BE
 260#define	SNDRV_PCM_FORMAT_U32		SNDRV_PCM_FORMAT_U32_BE
 261#define	SNDRV_PCM_FORMAT_FLOAT		SNDRV_PCM_FORMAT_FLOAT_BE
 262#define	SNDRV_PCM_FORMAT_FLOAT64	SNDRV_PCM_FORMAT_FLOAT64_BE
 263#define	SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE
 264#define	SNDRV_PCM_FORMAT_S20		SNDRV_PCM_FORMAT_S20_BE
 265#define	SNDRV_PCM_FORMAT_U20		SNDRV_PCM_FORMAT_U20_BE
 266#endif
 267
 268typedef int __bitwise snd_pcm_subformat_t;
 269#define	SNDRV_PCM_SUBFORMAT_STD		((__force snd_pcm_subformat_t) 0)
 270#define	SNDRV_PCM_SUBFORMAT_LAST	SNDRV_PCM_SUBFORMAT_STD
 271
 272#define SNDRV_PCM_INFO_MMAP		0x00000001	/* hardware supports mmap */
 273#define SNDRV_PCM_INFO_MMAP_VALID	0x00000002	/* period data are valid during transfer */
 274#define SNDRV_PCM_INFO_DOUBLE		0x00000004	/* Double buffering needed for PCM start/stop */
 275#define SNDRV_PCM_INFO_BATCH		0x00000010	/* double buffering */
 276#define SNDRV_PCM_INFO_SYNC_APPLPTR	0x00000020	/* need the explicit sync of appl_ptr update */
 277#define SNDRV_PCM_INFO_INTERLEAVED	0x00000100	/* channels are interleaved */
 278#define SNDRV_PCM_INFO_NONINTERLEAVED	0x00000200	/* channels are not interleaved */
 279#define SNDRV_PCM_INFO_COMPLEX		0x00000400	/* complex frame organization (mmap only) */
 280#define SNDRV_PCM_INFO_BLOCK_TRANSFER	0x00010000	/* hardware transfer block of samples */
 281#define SNDRV_PCM_INFO_OVERRANGE	0x00020000	/* hardware supports ADC (capture) overrange detection */
 282#define SNDRV_PCM_INFO_RESUME		0x00040000	/* hardware supports stream resume after suspend */
 283#define SNDRV_PCM_INFO_PAUSE		0x00080000	/* pause ioctl is supported */
 284#define SNDRV_PCM_INFO_HALF_DUPLEX	0x00100000	/* only half duplex */
 285#define SNDRV_PCM_INFO_JOINT_DUPLEX	0x00200000	/* playback and capture stream are somewhat correlated */
 286#define SNDRV_PCM_INFO_SYNC_START	0x00400000	/* pcm support some kind of sync go */
 287#define SNDRV_PCM_INFO_NO_PERIOD_WAKEUP	0x00800000	/* period wakeup can be disabled */
 288#define SNDRV_PCM_INFO_HAS_WALL_CLOCK   0x01000000      /* (Deprecated)has audio wall clock for audio/system time sync */
 289#define SNDRV_PCM_INFO_HAS_LINK_ATIME              0x01000000  /* report hardware link audio time, reset on startup */
 290#define SNDRV_PCM_INFO_HAS_LINK_ABSOLUTE_ATIME     0x02000000  /* report absolute hardware link audio time, not reset on startup */
 291#define SNDRV_PCM_INFO_HAS_LINK_ESTIMATED_ATIME    0x04000000  /* report estimated link audio time */
 292#define SNDRV_PCM_INFO_HAS_LINK_SYNCHRONIZED_ATIME 0x08000000  /* report synchronized audio/system time */
 293#define SNDRV_PCM_INFO_EXPLICIT_SYNC	0x10000000	/* needs explicit sync of pointers and data */
 294#define SNDRV_PCM_INFO_NO_REWINDS	0x20000000	/* hardware can only support monotonic changes of appl_ptr */
 295#define SNDRV_PCM_INFO_DRAIN_TRIGGER	0x40000000		/* internal kernel flag - trigger in drain */
 296#define SNDRV_PCM_INFO_FIFO_IN_FRAMES	0x80000000	/* internal kernel flag - FIFO size is in frames */
 297
 298#if (__BITS_PER_LONG == 32 && defined(__USE_TIME_BITS64)) || defined __KERNEL__
 299#define __SND_STRUCT_TIME64
 300#endif
 301
 302typedef int __bitwise snd_pcm_state_t;
 303#define	SNDRV_PCM_STATE_OPEN		((__force snd_pcm_state_t) 0) /* stream is open */
 304#define	SNDRV_PCM_STATE_SETUP		((__force snd_pcm_state_t) 1) /* stream has a setup */
 305#define	SNDRV_PCM_STATE_PREPARED	((__force snd_pcm_state_t) 2) /* stream is ready to start */
 306#define	SNDRV_PCM_STATE_RUNNING		((__force snd_pcm_state_t) 3) /* stream is running */
 307#define	SNDRV_PCM_STATE_XRUN		((__force snd_pcm_state_t) 4) /* stream reached an xrun */
 308#define	SNDRV_PCM_STATE_DRAINING	((__force snd_pcm_state_t) 5) /* stream is draining */
 309#define	SNDRV_PCM_STATE_PAUSED		((__force snd_pcm_state_t) 6) /* stream is paused */
 310#define	SNDRV_PCM_STATE_SUSPENDED	((__force snd_pcm_state_t) 7) /* hardware is suspended */
 311#define	SNDRV_PCM_STATE_DISCONNECTED	((__force snd_pcm_state_t) 8) /* hardware is disconnected */
 312#define	SNDRV_PCM_STATE_LAST		SNDRV_PCM_STATE_DISCONNECTED
 313
 314enum {
 315	SNDRV_PCM_MMAP_OFFSET_DATA = 0x00000000,
 316	SNDRV_PCM_MMAP_OFFSET_STATUS_OLD = 0x80000000,
 317	SNDRV_PCM_MMAP_OFFSET_CONTROL_OLD = 0x81000000,
 318	SNDRV_PCM_MMAP_OFFSET_STATUS_NEW = 0x82000000,
 319	SNDRV_PCM_MMAP_OFFSET_CONTROL_NEW = 0x83000000,
 320#ifdef __SND_STRUCT_TIME64
 321	SNDRV_PCM_MMAP_OFFSET_STATUS = SNDRV_PCM_MMAP_OFFSET_STATUS_NEW,
 322	SNDRV_PCM_MMAP_OFFSET_CONTROL = SNDRV_PCM_MMAP_OFFSET_CONTROL_NEW,
 323#else
 324	SNDRV_PCM_MMAP_OFFSET_STATUS = SNDRV_PCM_MMAP_OFFSET_STATUS_OLD,
 325	SNDRV_PCM_MMAP_OFFSET_CONTROL = SNDRV_PCM_MMAP_OFFSET_CONTROL_OLD,
 326#endif
 327};
 328
 329union snd_pcm_sync_id {
 330	unsigned char id[16];
 331	unsigned short id16[8];
 332	unsigned int id32[4];
 333};
 334
 335struct snd_pcm_info {
 336	unsigned int device;		/* RO/WR (control): device number */
 337	unsigned int subdevice;		/* RO/WR (control): subdevice number */
 338	int stream;			/* RO/WR (control): stream direction */
 339	int card;			/* R: card number */
 340	unsigned char id[64];		/* ID (user selectable) */
 341	unsigned char name[80];		/* name of this device */
 342	unsigned char subname[32];	/* subdevice name */
 343	int dev_class;			/* SNDRV_PCM_CLASS_* */
 344	int dev_subclass;		/* SNDRV_PCM_SUBCLASS_* */
 345	unsigned int subdevices_count;
 346	unsigned int subdevices_avail;
 347	union snd_pcm_sync_id sync;	/* hardware synchronization ID */
 348	unsigned char reserved[64];	/* reserved for future... */
 349};
 350
 351typedef int snd_pcm_hw_param_t;
 352#define	SNDRV_PCM_HW_PARAM_ACCESS	0	/* Access type */
 353#define	SNDRV_PCM_HW_PARAM_FORMAT	1	/* Format */
 354#define	SNDRV_PCM_HW_PARAM_SUBFORMAT	2	/* Subformat */
 355#define	SNDRV_PCM_HW_PARAM_FIRST_MASK	SNDRV_PCM_HW_PARAM_ACCESS
 356#define	SNDRV_PCM_HW_PARAM_LAST_MASK	SNDRV_PCM_HW_PARAM_SUBFORMAT
 357
 358#define	SNDRV_PCM_HW_PARAM_SAMPLE_BITS	8	/* Bits per sample */
 359#define	SNDRV_PCM_HW_PARAM_FRAME_BITS	9	/* Bits per frame */
 360#define	SNDRV_PCM_HW_PARAM_CHANNELS	10	/* Channels */
 361#define	SNDRV_PCM_HW_PARAM_RATE		11	/* Approx rate */
 362#define	SNDRV_PCM_HW_PARAM_PERIOD_TIME	12	/* Approx distance between
 363						 * interrupts in us
 364						 */
 365#define	SNDRV_PCM_HW_PARAM_PERIOD_SIZE	13	/* Approx frames between
 366						 * interrupts
 367						 */
 368#define	SNDRV_PCM_HW_PARAM_PERIOD_BYTES	14	/* Approx bytes between
 369						 * interrupts
 370						 */
 371#define	SNDRV_PCM_HW_PARAM_PERIODS	15	/* Approx interrupts per
 372						 * buffer
 373						 */
 374#define	SNDRV_PCM_HW_PARAM_BUFFER_TIME	16	/* Approx duration of buffer
 375						 * in us
 376						 */
 377#define	SNDRV_PCM_HW_PARAM_BUFFER_SIZE	17	/* Size of buffer in frames */
 378#define	SNDRV_PCM_HW_PARAM_BUFFER_BYTES	18	/* Size of buffer in bytes */
 379#define	SNDRV_PCM_HW_PARAM_TICK_TIME	19	/* Approx tick duration in us */
 380#define	SNDRV_PCM_HW_PARAM_FIRST_INTERVAL	SNDRV_PCM_HW_PARAM_SAMPLE_BITS
 381#define	SNDRV_PCM_HW_PARAM_LAST_INTERVAL	SNDRV_PCM_HW_PARAM_TICK_TIME
 382
 383#define SNDRV_PCM_HW_PARAMS_NORESAMPLE	(1<<0)	/* avoid rate resampling */
 384#define SNDRV_PCM_HW_PARAMS_EXPORT_BUFFER	(1<<1)	/* export buffer */
 385#define SNDRV_PCM_HW_PARAMS_NO_PERIOD_WAKEUP	(1<<2)	/* disable period wakeups */
 386
 387struct snd_interval {
 388	unsigned int min, max;
 389	unsigned int openmin:1,
 390		     openmax:1,
 391		     integer:1,
 392		     empty:1;
 393};
 394
 395#define SNDRV_MASK_MAX	256
 396
 397struct snd_mask {
 398	__u32 bits[(SNDRV_MASK_MAX+31)/32];
 399};
 400
 401struct snd_pcm_hw_params {
 402	unsigned int flags;
 403	struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK -
 404			       SNDRV_PCM_HW_PARAM_FIRST_MASK + 1];
 405	struct snd_mask mres[5];	/* reserved masks */
 406	struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL -
 407				        SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];
 408	struct snd_interval ires[9];	/* reserved intervals */
 409	unsigned int rmask;		/* W: requested masks */
 410	unsigned int cmask;		/* R: changed masks */
 411	unsigned int info;		/* R: Info flags for returned setup */
 412	unsigned int msbits;		/* R: used most significant bits */
 413	unsigned int rate_num;		/* R: rate numerator */
 414	unsigned int rate_den;		/* R: rate denominator */
 415	snd_pcm_uframes_t fifo_size;	/* R: chip FIFO size in frames */
 416	unsigned char reserved[64];	/* reserved for future */
 417};
 418
 419enum {
 420	SNDRV_PCM_TSTAMP_NONE = 0,
 421	SNDRV_PCM_TSTAMP_ENABLE,
 422	SNDRV_PCM_TSTAMP_LAST = SNDRV_PCM_TSTAMP_ENABLE,
 423};
 424
 425struct snd_pcm_sw_params {
 426	int tstamp_mode;			/* timestamp mode */
 427	unsigned int period_step;
 428	unsigned int sleep_min;			/* min ticks to sleep */
 429	snd_pcm_uframes_t avail_min;		/* min avail frames for wakeup */
 430	snd_pcm_uframes_t xfer_align;		/* obsolete: xfer size need to be a multiple */
 431	snd_pcm_uframes_t start_threshold;	/* min hw_avail frames for automatic start */
 432	snd_pcm_uframes_t stop_threshold;	/* min avail frames for automatic stop */
 433	snd_pcm_uframes_t silence_threshold;	/* min distance from noise for silence filling */
 434	snd_pcm_uframes_t silence_size;		/* silence block size */
 435	snd_pcm_uframes_t boundary;		/* pointers wrap point */
 436	unsigned int proto;			/* protocol version */
 437	unsigned int tstamp_type;		/* timestamp type (req. proto >= 2.0.12) */
 438	unsigned char reserved[56];		/* reserved for future */
 439};
 440
 441struct snd_pcm_channel_info {
 442	unsigned int channel;
 443	__kernel_off_t offset;		/* mmap offset */
 444	unsigned int first;		/* offset to first sample in bits */
 445	unsigned int step;		/* samples distance in bits */
 446};
 447
 448enum {
 449	/*
 450	 *  first definition for backwards compatibility only,
 451	 *  maps to wallclock/link time for HDAudio playback and DEFAULT/DMA time for everything else
 452	 */
 453	SNDRV_PCM_AUDIO_TSTAMP_TYPE_COMPAT = 0,
 454
 455	/* timestamp definitions */
 456	SNDRV_PCM_AUDIO_TSTAMP_TYPE_DEFAULT = 1,           /* DMA time, reported as per hw_ptr */
 457	SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK = 2,	           /* link time reported by sample or wallclock counter, reset on startup */
 458	SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_ABSOLUTE = 3,	   /* link time reported by sample or wallclock counter, not reset on startup */
 459	SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_ESTIMATED = 4,    /* link time estimated indirectly */
 460	SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_SYNCHRONIZED = 5, /* link time synchronized with system time */
 461	SNDRV_PCM_AUDIO_TSTAMP_TYPE_LAST = SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_SYNCHRONIZED
 462};
 463
 464#ifndef __KERNEL__
 465/* explicit padding avoids incompatibility between i386 and x86-64 */
 466typedef struct { unsigned char pad[sizeof(time_t) - sizeof(int)]; } __time_pad;
 467
 468struct snd_pcm_status {
 469	snd_pcm_state_t state;		/* stream state */
 470	__time_pad pad1;		/* align to timespec */
 471	struct timespec trigger_tstamp;	/* time when stream was started/stopped/paused */
 472	struct timespec tstamp;		/* reference timestamp */
 473	snd_pcm_uframes_t appl_ptr;	/* appl ptr */
 474	snd_pcm_uframes_t hw_ptr;	/* hw ptr */
 475	snd_pcm_sframes_t delay;	/* current delay in frames */
 476	snd_pcm_uframes_t avail;	/* number of frames available */
 477	snd_pcm_uframes_t avail_max;	/* max frames available on hw since last status */
 478	snd_pcm_uframes_t overrange;	/* count of ADC (capture) overrange detections from last status */
 479	snd_pcm_state_t suspended_state; /* suspended stream state */
 480	__u32 audio_tstamp_data;	 /* needed for 64-bit alignment, used for configs/report to/from userspace */
 481	struct timespec audio_tstamp;	/* sample counter, wall clock, PHC or on-demand sync'ed */
 482	struct timespec driver_tstamp;	/* useful in case reference system tstamp is reported with delay */
 483	__u32 audio_tstamp_accuracy;	/* in ns units, only valid if indicated in audio_tstamp_data */
 484	unsigned char reserved[52-2*sizeof(struct timespec)]; /* must be filled with zero */
 485};
 486#endif
 487
 488/*
 489 * For mmap operations, we need the 64-bit layout, both for compat mode,
 490 * and for y2038 compatibility. For 64-bit applications, the two definitions
 491 * are identical, so we keep the traditional version.
 492 */
 493#ifdef __SND_STRUCT_TIME64
 494#define __snd_pcm_mmap_status64		snd_pcm_mmap_status
 495#define __snd_pcm_mmap_control64	snd_pcm_mmap_control
 496#define __snd_pcm_sync_ptr64		snd_pcm_sync_ptr
 497#ifdef __KERNEL__
 498#define __snd_timespec64		__kernel_timespec
 499#else
 500#define __snd_timespec64		timespec
 501#endif
 502struct __snd_timespec {
 503	__s32 tv_sec;
 504	__s32 tv_nsec;
 505};
 506#else
 507#define __snd_pcm_mmap_status		snd_pcm_mmap_status
 508#define __snd_pcm_mmap_control		snd_pcm_mmap_control
 509#define __snd_pcm_sync_ptr		snd_pcm_sync_ptr
 510#define __snd_timespec			timespec
 511struct __snd_timespec64 {
 512	__s64 tv_sec;
 513	__s64 tv_nsec;
 514};
 515
 516#endif
 517
 518struct __snd_pcm_mmap_status {
 519	snd_pcm_state_t state;		/* RO: state - SNDRV_PCM_STATE_XXXX */
 520	int pad1;			/* Needed for 64 bit alignment */
 521	snd_pcm_uframes_t hw_ptr;	/* RO: hw ptr (0...boundary-1) */
 522	struct __snd_timespec tstamp;	/* Timestamp */
 523	snd_pcm_state_t suspended_state; /* RO: suspended stream state */
 524	struct __snd_timespec audio_tstamp; /* from sample counter or wall clock */
 525};
 526
 527struct __snd_pcm_mmap_control {
 528	snd_pcm_uframes_t appl_ptr;	/* RW: appl ptr (0...boundary-1) */
 529	snd_pcm_uframes_t avail_min;	/* RW: min available frames for wakeup */
 530};
 531
 532#define SNDRV_PCM_SYNC_PTR_HWSYNC	(1<<0)	/* execute hwsync */
 533#define SNDRV_PCM_SYNC_PTR_APPL		(1<<1)	/* get appl_ptr from driver (r/w op) */
 534#define SNDRV_PCM_SYNC_PTR_AVAIL_MIN	(1<<2)	/* get avail_min from driver */
 535
 536struct __snd_pcm_sync_ptr {
 537	unsigned int flags;
 538	union {
 539		struct __snd_pcm_mmap_status status;
 540		unsigned char reserved[64];
 541	} s;
 542	union {
 543		struct __snd_pcm_mmap_control control;
 544		unsigned char reserved[64];
 545	} c;
 546};
 547
 548#if defined(__BYTE_ORDER) ? __BYTE_ORDER == __BIG_ENDIAN : defined(__BIG_ENDIAN)
 549typedef char __pad_before_uframe[sizeof(__u64) - sizeof(snd_pcm_uframes_t)];
 550typedef char __pad_after_uframe[0];
 551#endif
 552
 553#if defined(__BYTE_ORDER) ? __BYTE_ORDER == __LITTLE_ENDIAN : defined(__LITTLE_ENDIAN)
 554typedef char __pad_before_uframe[0];
 555typedef char __pad_after_uframe[sizeof(__u64) - sizeof(snd_pcm_uframes_t)];
 556#endif
 557
 558struct __snd_pcm_mmap_status64 {
 559	snd_pcm_state_t state;		/* RO: state - SNDRV_PCM_STATE_XXXX */
 560	__u32 pad1;			/* Needed for 64 bit alignment */
 561	__pad_before_uframe __pad1;
 562	snd_pcm_uframes_t hw_ptr;	/* RO: hw ptr (0...boundary-1) */
 563	__pad_after_uframe __pad2;
 564	struct __snd_timespec64 tstamp;	/* Timestamp */
 565	snd_pcm_state_t suspended_state;/* RO: suspended stream state */
 566	__u32 pad3;			/* Needed for 64 bit alignment */
 567	struct __snd_timespec64 audio_tstamp; /* sample counter or wall clock */
 568};
 569
 570struct __snd_pcm_mmap_control64 {
 571	__pad_before_uframe __pad1;
 572	snd_pcm_uframes_t appl_ptr;	 /* RW: appl ptr (0...boundary-1) */
 573	__pad_before_uframe __pad2;
 574
 575	__pad_before_uframe __pad3;
 576	snd_pcm_uframes_t  avail_min;	 /* RW: min available frames for wakeup */
 577	__pad_after_uframe __pad4;
 578};
 579
 580struct __snd_pcm_sync_ptr64 {
 581	__u32 flags;
 582	__u32 pad1;
 583	union {
 584		struct __snd_pcm_mmap_status64 status;
 585		unsigned char reserved[64];
 586	} s;
 587	union {
 588		struct __snd_pcm_mmap_control64 control;
 589		unsigned char reserved[64];
 590	} c;
 591};
 592
 593struct snd_xferi {
 594	snd_pcm_sframes_t result;
 595	void __user *buf;
 596	snd_pcm_uframes_t frames;
 597};
 598
 599struct snd_xfern {
 600	snd_pcm_sframes_t result;
 601	void __user * __user *bufs;
 602	snd_pcm_uframes_t frames;
 603};
 604
 605enum {
 606	SNDRV_PCM_TSTAMP_TYPE_GETTIMEOFDAY = 0,	/* gettimeofday equivalent */
 607	SNDRV_PCM_TSTAMP_TYPE_MONOTONIC,	/* posix_clock_monotonic equivalent */
 608	SNDRV_PCM_TSTAMP_TYPE_MONOTONIC_RAW,    /* monotonic_raw (no NTP) */
 609	SNDRV_PCM_TSTAMP_TYPE_LAST = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC_RAW,
 610};
 611
 612/* channel positions */
 613enum {
 614	SNDRV_CHMAP_UNKNOWN = 0,
 615	SNDRV_CHMAP_NA,		/* N/A, silent */
 616	SNDRV_CHMAP_MONO,	/* mono stream */
 617	/* this follows the alsa-lib mixer channel value + 3 */
 618	SNDRV_CHMAP_FL,		/* front left */
 619	SNDRV_CHMAP_FR,		/* front right */
 620	SNDRV_CHMAP_RL,		/* rear left */
 621	SNDRV_CHMAP_RR,		/* rear right */
 622	SNDRV_CHMAP_FC,		/* front center */
 623	SNDRV_CHMAP_LFE,	/* LFE */
 624	SNDRV_CHMAP_SL,		/* side left */
 625	SNDRV_CHMAP_SR,		/* side right */
 626	SNDRV_CHMAP_RC,		/* rear center */
 627	/* new definitions */
 628	SNDRV_CHMAP_FLC,	/* front left center */
 629	SNDRV_CHMAP_FRC,	/* front right center */
 630	SNDRV_CHMAP_RLC,	/* rear left center */
 631	SNDRV_CHMAP_RRC,	/* rear right center */
 632	SNDRV_CHMAP_FLW,	/* front left wide */
 633	SNDRV_CHMAP_FRW,	/* front right wide */
 634	SNDRV_CHMAP_FLH,	/* front left high */
 635	SNDRV_CHMAP_FCH,	/* front center high */
 636	SNDRV_CHMAP_FRH,	/* front right high */
 637	SNDRV_CHMAP_TC,		/* top center */
 638	SNDRV_CHMAP_TFL,	/* top front left */
 639	SNDRV_CHMAP_TFR,	/* top front right */
 640	SNDRV_CHMAP_TFC,	/* top front center */
 641	SNDRV_CHMAP_TRL,	/* top rear left */
 642	SNDRV_CHMAP_TRR,	/* top rear right */
 643	SNDRV_CHMAP_TRC,	/* top rear center */
 644	/* new definitions for UAC2 */
 645	SNDRV_CHMAP_TFLC,	/* top front left center */
 646	SNDRV_CHMAP_TFRC,	/* top front right center */
 647	SNDRV_CHMAP_TSL,	/* top side left */
 648	SNDRV_CHMAP_TSR,	/* top side right */
 649	SNDRV_CHMAP_LLFE,	/* left LFE */
 650	SNDRV_CHMAP_RLFE,	/* right LFE */
 651	SNDRV_CHMAP_BC,		/* bottom center */
 652	SNDRV_CHMAP_BLC,	/* bottom left center */
 653	SNDRV_CHMAP_BRC,	/* bottom right center */
 654	SNDRV_CHMAP_LAST = SNDRV_CHMAP_BRC,
 655};
 656
 657#define SNDRV_CHMAP_POSITION_MASK	0xffff
 658#define SNDRV_CHMAP_PHASE_INVERSE	(0x01 << 16)
 659#define SNDRV_CHMAP_DRIVER_SPEC		(0x02 << 16)
 660
 661#define SNDRV_PCM_IOCTL_PVERSION	_IOR('A', 0x00, int)
 662#define SNDRV_PCM_IOCTL_INFO		_IOR('A', 0x01, struct snd_pcm_info)
 663#define SNDRV_PCM_IOCTL_TSTAMP		_IOW('A', 0x02, int)
 664#define SNDRV_PCM_IOCTL_TTSTAMP		_IOW('A', 0x03, int)
 665#define SNDRV_PCM_IOCTL_USER_PVERSION	_IOW('A', 0x04, int)
 666#define SNDRV_PCM_IOCTL_HW_REFINE	_IOWR('A', 0x10, struct snd_pcm_hw_params)
 667#define SNDRV_PCM_IOCTL_HW_PARAMS	_IOWR('A', 0x11, struct snd_pcm_hw_params)
 668#define SNDRV_PCM_IOCTL_HW_FREE		_IO('A', 0x12)
 669#define SNDRV_PCM_IOCTL_SW_PARAMS	_IOWR('A', 0x13, struct snd_pcm_sw_params)
 670#define SNDRV_PCM_IOCTL_STATUS		_IOR('A', 0x20, struct snd_pcm_status)
 671#define SNDRV_PCM_IOCTL_DELAY		_IOR('A', 0x21, snd_pcm_sframes_t)
 672#define SNDRV_PCM_IOCTL_HWSYNC		_IO('A', 0x22)
 673#define __SNDRV_PCM_IOCTL_SYNC_PTR	_IOWR('A', 0x23, struct __snd_pcm_sync_ptr)
 674#define __SNDRV_PCM_IOCTL_SYNC_PTR64	_IOWR('A', 0x23, struct __snd_pcm_sync_ptr64)
 675#define SNDRV_PCM_IOCTL_SYNC_PTR	_IOWR('A', 0x23, struct snd_pcm_sync_ptr)
 676#define SNDRV_PCM_IOCTL_STATUS_EXT	_IOWR('A', 0x24, struct snd_pcm_status)
 677#define SNDRV_PCM_IOCTL_CHANNEL_INFO	_IOR('A', 0x32, struct snd_pcm_channel_info)
 678#define SNDRV_PCM_IOCTL_PREPARE		_IO('A', 0x40)
 679#define SNDRV_PCM_IOCTL_RESET		_IO('A', 0x41)
 680#define SNDRV_PCM_IOCTL_START		_IO('A', 0x42)
 681#define SNDRV_PCM_IOCTL_DROP		_IO('A', 0x43)
 682#define SNDRV_PCM_IOCTL_DRAIN		_IO('A', 0x44)
 683#define SNDRV_PCM_IOCTL_PAUSE		_IOW('A', 0x45, int)
 684#define SNDRV_PCM_IOCTL_REWIND		_IOW('A', 0x46, snd_pcm_uframes_t)
 685#define SNDRV_PCM_IOCTL_RESUME		_IO('A', 0x47)
 686#define SNDRV_PCM_IOCTL_XRUN		_IO('A', 0x48)
 687#define SNDRV_PCM_IOCTL_FORWARD		_IOW('A', 0x49, snd_pcm_uframes_t)
 688#define SNDRV_PCM_IOCTL_WRITEI_FRAMES	_IOW('A', 0x50, struct snd_xferi)
 689#define SNDRV_PCM_IOCTL_READI_FRAMES	_IOR('A', 0x51, struct snd_xferi)
 690#define SNDRV_PCM_IOCTL_WRITEN_FRAMES	_IOW('A', 0x52, struct snd_xfern)
 691#define SNDRV_PCM_IOCTL_READN_FRAMES	_IOR('A', 0x53, struct snd_xfern)
 692#define SNDRV_PCM_IOCTL_LINK		_IOW('A', 0x60, int)
 693#define SNDRV_PCM_IOCTL_UNLINK		_IO('A', 0x61)
 694
 695/*****************************************************************************
 696 *                                                                           *
 697 *                            MIDI v1.0 interface                            *
 698 *                                                                           *
 699 *****************************************************************************/
 700
 701/*
 702 *  Raw MIDI section - /dev/snd/midi??
 703 */
 704
 705#define SNDRV_RAWMIDI_VERSION		SNDRV_PROTOCOL_VERSION(2, 0, 2)
 706
 707enum {
 708	SNDRV_RAWMIDI_STREAM_OUTPUT = 0,
 709	SNDRV_RAWMIDI_STREAM_INPUT,
 710	SNDRV_RAWMIDI_STREAM_LAST = SNDRV_RAWMIDI_STREAM_INPUT,
 711};
 712
 713#define SNDRV_RAWMIDI_INFO_OUTPUT		0x00000001
 714#define SNDRV_RAWMIDI_INFO_INPUT		0x00000002
 715#define SNDRV_RAWMIDI_INFO_DUPLEX		0x00000004
 716
 717struct snd_rawmidi_info {
 718	unsigned int device;		/* RO/WR (control): device number */
 719	unsigned int subdevice;		/* RO/WR (control): subdevice number */
 720	int stream;			/* WR: stream */
 721	int card;			/* R: card number */
 722	unsigned int flags;		/* SNDRV_RAWMIDI_INFO_XXXX */
 723	unsigned char id[64];		/* ID (user selectable) */
 724	unsigned char name[80];		/* name of device */
 725	unsigned char subname[32];	/* name of active or selected subdevice */
 726	unsigned int subdevices_count;
 727	unsigned int subdevices_avail;
 728	unsigned char reserved[64];	/* reserved for future use */
 729};
 730
 731#define SNDRV_RAWMIDI_MODE_FRAMING_MASK		(7<<0)
 732#define SNDRV_RAWMIDI_MODE_FRAMING_SHIFT	0
 733#define SNDRV_RAWMIDI_MODE_FRAMING_NONE		(0<<0)
 734#define SNDRV_RAWMIDI_MODE_FRAMING_TSTAMP	(1<<0)
 735#define SNDRV_RAWMIDI_MODE_CLOCK_MASK		(7<<3)
 736#define SNDRV_RAWMIDI_MODE_CLOCK_SHIFT		3
 737#define SNDRV_RAWMIDI_MODE_CLOCK_NONE		(0<<3)
 738#define SNDRV_RAWMIDI_MODE_CLOCK_REALTIME	(1<<3)
 739#define SNDRV_RAWMIDI_MODE_CLOCK_MONOTONIC	(2<<3)
 740#define SNDRV_RAWMIDI_MODE_CLOCK_MONOTONIC_RAW	(3<<3)
 741
 742#define SNDRV_RAWMIDI_FRAMING_DATA_LENGTH 16
 743
 744struct snd_rawmidi_framing_tstamp {
 745	/* For now, frame_type is always 0. Midi 2.0 is expected to add new
 746	 * types here. Applications are expected to skip unknown frame types.
 747	 */
 748	__u8 frame_type;
 749	__u8 length; /* number of valid bytes in data field */
 750	__u8 reserved[2];
 751	__u32 tv_nsec;		/* nanoseconds */
 752	__u64 tv_sec;		/* seconds */
 753	__u8 data[SNDRV_RAWMIDI_FRAMING_DATA_LENGTH];
 754} __packed;
 755
 756struct snd_rawmidi_params {
 757	int stream;
 758	size_t buffer_size;		/* queue size in bytes */
 759	size_t avail_min;		/* minimum avail bytes for wakeup */
 760	unsigned int no_active_sensing: 1; /* do not send active sensing byte in close() */
 761	unsigned int mode;		/* For input data only, frame incoming data */
 762	unsigned char reserved[12];	/* reserved for future use */
 763};
 764
 765#ifndef __KERNEL__
 766struct snd_rawmidi_status {
 767	int stream;
 768	__time_pad pad1;
 769	struct timespec tstamp;		/* Timestamp */
 770	size_t avail;			/* available bytes */
 771	size_t xruns;			/* count of overruns since last status (in bytes) */
 772	unsigned char reserved[16];	/* reserved for future use */
 773};
 774#endif
 775
 776#define SNDRV_RAWMIDI_IOCTL_PVERSION	_IOR('W', 0x00, int)
 777#define SNDRV_RAWMIDI_IOCTL_INFO	_IOR('W', 0x01, struct snd_rawmidi_info)
 778#define SNDRV_RAWMIDI_IOCTL_USER_PVERSION _IOW('W', 0x02, int)
 779#define SNDRV_RAWMIDI_IOCTL_PARAMS	_IOWR('W', 0x10, struct snd_rawmidi_params)
 780#define SNDRV_RAWMIDI_IOCTL_STATUS	_IOWR('W', 0x20, struct snd_rawmidi_status)
 781#define SNDRV_RAWMIDI_IOCTL_DROP	_IOW('W', 0x30, int)
 782#define SNDRV_RAWMIDI_IOCTL_DRAIN	_IOW('W', 0x31, int)
 783
 784/*
 785 *  Timer section - /dev/snd/timer
 786 */
 787
 788#define SNDRV_TIMER_VERSION		SNDRV_PROTOCOL_VERSION(2, 0, 7)
 789
 790enum {
 791	SNDRV_TIMER_CLASS_NONE = -1,
 792	SNDRV_TIMER_CLASS_SLAVE = 0,
 793	SNDRV_TIMER_CLASS_GLOBAL,
 794	SNDRV_TIMER_CLASS_CARD,
 795	SNDRV_TIMER_CLASS_PCM,
 796	SNDRV_TIMER_CLASS_LAST = SNDRV_TIMER_CLASS_PCM,
 797};
 798
 799/* slave timer classes */
 800enum {
 801	SNDRV_TIMER_SCLASS_NONE = 0,
 802	SNDRV_TIMER_SCLASS_APPLICATION,
 803	SNDRV_TIMER_SCLASS_SEQUENCER,		/* alias */
 804	SNDRV_TIMER_SCLASS_OSS_SEQUENCER,	/* alias */
 805	SNDRV_TIMER_SCLASS_LAST = SNDRV_TIMER_SCLASS_OSS_SEQUENCER,
 806};
 807
 808/* global timers (device member) */
 809#define SNDRV_TIMER_GLOBAL_SYSTEM	0
 810#define SNDRV_TIMER_GLOBAL_RTC		1	/* unused */
 811#define SNDRV_TIMER_GLOBAL_HPET		2
 812#define SNDRV_TIMER_GLOBAL_HRTIMER	3
 813
 814/* info flags */
 815#define SNDRV_TIMER_FLG_SLAVE		(1<<0)	/* cannot be controlled */
 816
 817struct snd_timer_id {
 818	int dev_class;
 819	int dev_sclass;
 820	int card;
 821	int device;
 822	int subdevice;
 823};
 824
 825struct snd_timer_ginfo {
 826	struct snd_timer_id tid;	/* requested timer ID */
 827	unsigned int flags;		/* timer flags - SNDRV_TIMER_FLG_* */
 828	int card;			/* card number */
 829	unsigned char id[64];		/* timer identification */
 830	unsigned char name[80];		/* timer name */
 831	unsigned long reserved0;	/* reserved for future use */
 832	unsigned long resolution;	/* average period resolution in ns */
 833	unsigned long resolution_min;	/* minimal period resolution in ns */
 834	unsigned long resolution_max;	/* maximal period resolution in ns */
 835	unsigned int clients;		/* active timer clients */
 836	unsigned char reserved[32];
 837};
 838
 839struct snd_timer_gparams {
 840	struct snd_timer_id tid;	/* requested timer ID */
 841	unsigned long period_num;	/* requested precise period duration (in seconds) - numerator */
 842	unsigned long period_den;	/* requested precise period duration (in seconds) - denominator */
 843	unsigned char reserved[32];
 844};
 845
 846struct snd_timer_gstatus {
 847	struct snd_timer_id tid;	/* requested timer ID */
 848	unsigned long resolution;	/* current period resolution in ns */
 849	unsigned long resolution_num;	/* precise current period resolution (in seconds) - numerator */
 850	unsigned long resolution_den;	/* precise current period resolution (in seconds) - denominator */
 851	unsigned char reserved[32];
 852};
 853
 854struct snd_timer_select {
 855	struct snd_timer_id id;	/* bind to timer ID */
 856	unsigned char reserved[32];	/* reserved */
 857};
 858
 859struct snd_timer_info {
 860	unsigned int flags;		/* timer flags - SNDRV_TIMER_FLG_* */
 861	int card;			/* card number */
 862	unsigned char id[64];		/* timer identificator */
 863	unsigned char name[80];		/* timer name */
 864	unsigned long reserved0;	/* reserved for future use */
 865	unsigned long resolution;	/* average period resolution in ns */
 866	unsigned char reserved[64];	/* reserved */
 867};
 868
 869#define SNDRV_TIMER_PSFLG_AUTO		(1<<0)	/* auto start, otherwise one-shot */
 870#define SNDRV_TIMER_PSFLG_EXCLUSIVE	(1<<1)	/* exclusive use, precise start/stop/pause/continue */
 871#define SNDRV_TIMER_PSFLG_EARLY_EVENT	(1<<2)	/* write early event to the poll queue */
 872
 873struct snd_timer_params {
 874	unsigned int flags;		/* flags - SNDRV_TIMER_PSFLG_* */
 875	unsigned int ticks;		/* requested resolution in ticks */
 876	unsigned int queue_size;	/* total size of queue (32-1024) */
 877	unsigned int reserved0;		/* reserved, was: failure locations */
 878	unsigned int filter;		/* event filter (bitmask of SNDRV_TIMER_EVENT_*) */
 879	unsigned char reserved[60];	/* reserved */
 880};
 881
 882#ifndef __KERNEL__
 883struct snd_timer_status {
 884	struct timespec tstamp;		/* Timestamp - last update */
 885	unsigned int resolution;	/* current period resolution in ns */
 886	unsigned int lost;		/* counter of master tick lost */
 887	unsigned int overrun;		/* count of read queue overruns */
 888	unsigned int queue;		/* used queue size */
 889	unsigned char reserved[64];	/* reserved */
 890};
 891#endif
 892
 893#define SNDRV_TIMER_IOCTL_PVERSION	_IOR('T', 0x00, int)
 894#define SNDRV_TIMER_IOCTL_NEXT_DEVICE	_IOWR('T', 0x01, struct snd_timer_id)
 895#define SNDRV_TIMER_IOCTL_TREAD_OLD	_IOW('T', 0x02, int)
 896#define SNDRV_TIMER_IOCTL_GINFO		_IOWR('T', 0x03, struct snd_timer_ginfo)
 897#define SNDRV_TIMER_IOCTL_GPARAMS	_IOW('T', 0x04, struct snd_timer_gparams)
 898#define SNDRV_TIMER_IOCTL_GSTATUS	_IOWR('T', 0x05, struct snd_timer_gstatus)
 899#define SNDRV_TIMER_IOCTL_SELECT	_IOW('T', 0x10, struct snd_timer_select)
 900#define SNDRV_TIMER_IOCTL_INFO		_IOR('T', 0x11, struct snd_timer_info)
 901#define SNDRV_TIMER_IOCTL_PARAMS	_IOW('T', 0x12, struct snd_timer_params)
 902#define SNDRV_TIMER_IOCTL_STATUS	_IOR('T', 0x14, struct snd_timer_status)
 903/* The following four ioctls are changed since 1.0.9 due to confliction */
 904#define SNDRV_TIMER_IOCTL_START		_IO('T', 0xa0)
 905#define SNDRV_TIMER_IOCTL_STOP		_IO('T', 0xa1)
 906#define SNDRV_TIMER_IOCTL_CONTINUE	_IO('T', 0xa2)
 907#define SNDRV_TIMER_IOCTL_PAUSE		_IO('T', 0xa3)
 908#define SNDRV_TIMER_IOCTL_TREAD64	_IOW('T', 0xa4, int)
 909
 910#if __BITS_PER_LONG == 64
 911#define SNDRV_TIMER_IOCTL_TREAD SNDRV_TIMER_IOCTL_TREAD_OLD
 912#else
 913#define SNDRV_TIMER_IOCTL_TREAD ((sizeof(__kernel_long_t) >= sizeof(time_t)) ? \
 914				 SNDRV_TIMER_IOCTL_TREAD_OLD : \
 915				 SNDRV_TIMER_IOCTL_TREAD64)
 916#endif
 917
 918struct snd_timer_read {
 919	unsigned int resolution;
 920	unsigned int ticks;
 921};
 922
 923enum {
 924	SNDRV_TIMER_EVENT_RESOLUTION = 0,	/* val = resolution in ns */
 925	SNDRV_TIMER_EVENT_TICK,			/* val = ticks */
 926	SNDRV_TIMER_EVENT_START,		/* val = resolution in ns */
 927	SNDRV_TIMER_EVENT_STOP,			/* val = 0 */
 928	SNDRV_TIMER_EVENT_CONTINUE,		/* val = resolution in ns */
 929	SNDRV_TIMER_EVENT_PAUSE,		/* val = 0 */
 930	SNDRV_TIMER_EVENT_EARLY,		/* val = 0, early event */
 931	SNDRV_TIMER_EVENT_SUSPEND,		/* val = 0 */
 932	SNDRV_TIMER_EVENT_RESUME,		/* val = resolution in ns */
 933	/* master timer events for slave timer instances */
 934	SNDRV_TIMER_EVENT_MSTART = SNDRV_TIMER_EVENT_START + 10,
 935	SNDRV_TIMER_EVENT_MSTOP = SNDRV_TIMER_EVENT_STOP + 10,
 936	SNDRV_TIMER_EVENT_MCONTINUE = SNDRV_TIMER_EVENT_CONTINUE + 10,
 937	SNDRV_TIMER_EVENT_MPAUSE = SNDRV_TIMER_EVENT_PAUSE + 10,
 938	SNDRV_TIMER_EVENT_MSUSPEND = SNDRV_TIMER_EVENT_SUSPEND + 10,
 939	SNDRV_TIMER_EVENT_MRESUME = SNDRV_TIMER_EVENT_RESUME + 10,
 940};
 941
 942#ifndef __KERNEL__
 943struct snd_timer_tread {
 944	int event;
 945	__time_pad pad1;
 946	struct timespec tstamp;
 947	unsigned int val;
 948	__time_pad pad2;
 949};
 950#endif
 951
 952/****************************************************************************
 953 *                                                                          *
 954 *        Section for driver control interface - /dev/snd/control?          *
 955 *                                                                          *
 956 ****************************************************************************/
 957
 958#define SNDRV_CTL_VERSION		SNDRV_PROTOCOL_VERSION(2, 0, 8)
 959
 960struct snd_ctl_card_info {
 961	int card;			/* card number */
 962	int pad;			/* reserved for future (was type) */
 963	unsigned char id[16];		/* ID of card (user selectable) */
 964	unsigned char driver[16];	/* Driver name */
 965	unsigned char name[32];		/* Short name of soundcard */
 966	unsigned char longname[80];	/* name + info text about soundcard */
 967	unsigned char reserved_[16];	/* reserved for future (was ID of mixer) */
 968	unsigned char mixername[80];	/* visual mixer identification */
 969	unsigned char components[128];	/* card components / fine identification, delimited with one space (AC97 etc..) */
 970};
 971
 972typedef int __bitwise snd_ctl_elem_type_t;
 973#define	SNDRV_CTL_ELEM_TYPE_NONE	((__force snd_ctl_elem_type_t) 0) /* invalid */
 974#define	SNDRV_CTL_ELEM_TYPE_BOOLEAN	((__force snd_ctl_elem_type_t) 1) /* boolean type */
 975#define	SNDRV_CTL_ELEM_TYPE_INTEGER	((__force snd_ctl_elem_type_t) 2) /* integer type */
 976#define	SNDRV_CTL_ELEM_TYPE_ENUMERATED	((__force snd_ctl_elem_type_t) 3) /* enumerated type */
 977#define	SNDRV_CTL_ELEM_TYPE_BYTES	((__force snd_ctl_elem_type_t) 4) /* byte array */
 978#define	SNDRV_CTL_ELEM_TYPE_IEC958	((__force snd_ctl_elem_type_t) 5) /* IEC958 (S/PDIF) setup */
 979#define	SNDRV_CTL_ELEM_TYPE_INTEGER64	((__force snd_ctl_elem_type_t) 6) /* 64-bit integer type */
 980#define	SNDRV_CTL_ELEM_TYPE_LAST	SNDRV_CTL_ELEM_TYPE_INTEGER64
 981
 982typedef int __bitwise snd_ctl_elem_iface_t;
 983#define	SNDRV_CTL_ELEM_IFACE_CARD	((__force snd_ctl_elem_iface_t) 0) /* global control */
 984#define	SNDRV_CTL_ELEM_IFACE_HWDEP	((__force snd_ctl_elem_iface_t) 1) /* hardware dependent device */
 985#define	SNDRV_CTL_ELEM_IFACE_MIXER	((__force snd_ctl_elem_iface_t) 2) /* virtual mixer device */
 986#define	SNDRV_CTL_ELEM_IFACE_PCM	((__force snd_ctl_elem_iface_t) 3) /* PCM device */
 987#define	SNDRV_CTL_ELEM_IFACE_RAWMIDI	((__force snd_ctl_elem_iface_t) 4) /* RawMidi device */
 988#define	SNDRV_CTL_ELEM_IFACE_TIMER	((__force snd_ctl_elem_iface_t) 5) /* timer device */
 989#define	SNDRV_CTL_ELEM_IFACE_SEQUENCER	((__force snd_ctl_elem_iface_t) 6) /* sequencer client */
 990#define	SNDRV_CTL_ELEM_IFACE_LAST	SNDRV_CTL_ELEM_IFACE_SEQUENCER
 991
 992#define SNDRV_CTL_ELEM_ACCESS_READ		(1<<0)
 993#define SNDRV_CTL_ELEM_ACCESS_WRITE		(1<<1)
 994#define SNDRV_CTL_ELEM_ACCESS_READWRITE		(SNDRV_CTL_ELEM_ACCESS_READ|SNDRV_CTL_ELEM_ACCESS_WRITE)
 995#define SNDRV_CTL_ELEM_ACCESS_VOLATILE		(1<<2)	/* control value may be changed without a notification */
 996/* (1 << 3) is unused. */
 997#define SNDRV_CTL_ELEM_ACCESS_TLV_READ		(1<<4)	/* TLV read is possible */
 998#define SNDRV_CTL_ELEM_ACCESS_TLV_WRITE		(1<<5)	/* TLV write is possible */
 999#define SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE	(SNDRV_CTL_ELEM_ACCESS_TLV_READ|SNDRV_CTL_ELEM_ACCESS_TLV_WRITE)
1000#define SNDRV_CTL_ELEM_ACCESS_TLV_COMMAND	(1<<6)	/* TLV command is possible */
1001#define SNDRV_CTL_ELEM_ACCESS_INACTIVE		(1<<8)	/* control does actually nothing, but may be updated */
1002#define SNDRV_CTL_ELEM_ACCESS_LOCK		(1<<9)	/* write lock */
1003#define SNDRV_CTL_ELEM_ACCESS_OWNER		(1<<10)	/* write lock owner */
1004#define SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK	(1<<28)	/* kernel use a TLV callback */
1005#define SNDRV_CTL_ELEM_ACCESS_USER		(1<<29) /* user space element */
1006/* bits 30 and 31 are obsoleted (for indirect access) */
1007
1008/* for further details see the ACPI and PCI power management specification */
1009#define SNDRV_CTL_POWER_D0		0x0000	/* full On */
1010#define SNDRV_CTL_POWER_D1		0x0100	/* partial On */
1011#define SNDRV_CTL_POWER_D2		0x0200	/* partial On */
1012#define SNDRV_CTL_POWER_D3		0x0300	/* Off */
1013#define SNDRV_CTL_POWER_D3hot		(SNDRV_CTL_POWER_D3|0x0000)	/* Off, with power */
1014#define SNDRV_CTL_POWER_D3cold		(SNDRV_CTL_POWER_D3|0x0001)	/* Off, without power */
1015
1016#define SNDRV_CTL_ELEM_ID_NAME_MAXLEN	44
1017
1018struct snd_ctl_elem_id {
1019	unsigned int numid;		/* numeric identifier, zero = invalid */
1020	snd_ctl_elem_iface_t iface;	/* interface identifier */
1021	unsigned int device;		/* device/client number */
1022	unsigned int subdevice;		/* subdevice (substream) number */
1023	unsigned char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];		/* ASCII name of item */
1024	unsigned int index;		/* index of item */
1025};
1026
1027struct snd_ctl_elem_list {
1028	unsigned int offset;		/* W: first element ID to get */
1029	unsigned int space;		/* W: count of element IDs to get */
1030	unsigned int used;		/* R: count of element IDs set */
1031	unsigned int count;		/* R: count of all elements */
1032	struct snd_ctl_elem_id __user *pids; /* R: IDs */
1033	unsigned char reserved[50];
1034};
1035
1036struct snd_ctl_elem_info {
1037	struct snd_ctl_elem_id id;	/* W: element ID */
1038	snd_ctl_elem_type_t type;	/* R: value type - SNDRV_CTL_ELEM_TYPE_* */
1039	unsigned int access;		/* R: value access (bitmask) - SNDRV_CTL_ELEM_ACCESS_* */
1040	unsigned int count;		/* count of values */
1041	__kernel_pid_t owner;		/* owner's PID of this control */
1042	union {
1043		struct {
1044			long min;		/* R: minimum value */
1045			long max;		/* R: maximum value */
1046			long step;		/* R: step (0 variable) */
1047		} integer;
1048		struct {
1049			long long min;		/* R: minimum value */
1050			long long max;		/* R: maximum value */
1051			long long step;		/* R: step (0 variable) */
1052		} integer64;
1053		struct {
1054			unsigned int items;	/* R: number of items */
1055			unsigned int item;	/* W: item number */
1056			char name[64];		/* R: value name */
1057			__u64 names_ptr;	/* W: names list (ELEM_ADD only) */
1058			unsigned int names_length;
1059		} enumerated;
1060		unsigned char reserved[128];
1061	} value;
1062	unsigned char reserved[64];
 
 
 
 
1063};
1064
1065struct snd_ctl_elem_value {
1066	struct snd_ctl_elem_id id;	/* W: element ID */
1067	unsigned int indirect: 1;	/* W: indirect access - obsoleted */
1068	union {
1069		union {
1070			long value[128];
1071			long *value_ptr;	/* obsoleted */
1072		} integer;
1073		union {
1074			long long value[64];
1075			long long *value_ptr;	/* obsoleted */
1076		} integer64;
1077		union {
1078			unsigned int item[128];
1079			unsigned int *item_ptr;	/* obsoleted */
1080		} enumerated;
1081		union {
1082			unsigned char data[512];
1083			unsigned char *data_ptr;	/* obsoleted */
1084		} bytes;
1085		struct snd_aes_iec958 iec958;
1086	} value;		/* RO */
1087	unsigned char reserved[128];
 
1088};
1089
1090struct snd_ctl_tlv {
1091	unsigned int numid;	/* control element numeric identification */
1092	unsigned int length;	/* in bytes aligned to 4 */
1093	unsigned int tlv[];	/* first TLV */
1094};
1095
1096#define SNDRV_CTL_IOCTL_PVERSION	_IOR('U', 0x00, int)
1097#define SNDRV_CTL_IOCTL_CARD_INFO	_IOR('U', 0x01, struct snd_ctl_card_info)
1098#define SNDRV_CTL_IOCTL_ELEM_LIST	_IOWR('U', 0x10, struct snd_ctl_elem_list)
1099#define SNDRV_CTL_IOCTL_ELEM_INFO	_IOWR('U', 0x11, struct snd_ctl_elem_info)
1100#define SNDRV_CTL_IOCTL_ELEM_READ	_IOWR('U', 0x12, struct snd_ctl_elem_value)
1101#define SNDRV_CTL_IOCTL_ELEM_WRITE	_IOWR('U', 0x13, struct snd_ctl_elem_value)
1102#define SNDRV_CTL_IOCTL_ELEM_LOCK	_IOW('U', 0x14, struct snd_ctl_elem_id)
1103#define SNDRV_CTL_IOCTL_ELEM_UNLOCK	_IOW('U', 0x15, struct snd_ctl_elem_id)
1104#define SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS _IOWR('U', 0x16, int)
1105#define SNDRV_CTL_IOCTL_ELEM_ADD	_IOWR('U', 0x17, struct snd_ctl_elem_info)
1106#define SNDRV_CTL_IOCTL_ELEM_REPLACE	_IOWR('U', 0x18, struct snd_ctl_elem_info)
1107#define SNDRV_CTL_IOCTL_ELEM_REMOVE	_IOWR('U', 0x19, struct snd_ctl_elem_id)
1108#define SNDRV_CTL_IOCTL_TLV_READ	_IOWR('U', 0x1a, struct snd_ctl_tlv)
1109#define SNDRV_CTL_IOCTL_TLV_WRITE	_IOWR('U', 0x1b, struct snd_ctl_tlv)
1110#define SNDRV_CTL_IOCTL_TLV_COMMAND	_IOWR('U', 0x1c, struct snd_ctl_tlv)
1111#define SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE _IOWR('U', 0x20, int)
1112#define SNDRV_CTL_IOCTL_HWDEP_INFO	_IOR('U', 0x21, struct snd_hwdep_info)
1113#define SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE	_IOR('U', 0x30, int)
1114#define SNDRV_CTL_IOCTL_PCM_INFO	_IOWR('U', 0x31, struct snd_pcm_info)
1115#define SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE _IOW('U', 0x32, int)
1116#define SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE _IOWR('U', 0x40, int)
1117#define SNDRV_CTL_IOCTL_RAWMIDI_INFO	_IOWR('U', 0x41, struct snd_rawmidi_info)
1118#define SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE _IOW('U', 0x42, int)
1119#define SNDRV_CTL_IOCTL_POWER		_IOWR('U', 0xd0, int)
1120#define SNDRV_CTL_IOCTL_POWER_STATE	_IOR('U', 0xd1, int)
1121
1122/*
1123 *  Read interface.
1124 */
1125
1126enum sndrv_ctl_event_type {
1127	SNDRV_CTL_EVENT_ELEM = 0,
1128	SNDRV_CTL_EVENT_LAST = SNDRV_CTL_EVENT_ELEM,
1129};
1130
1131#define SNDRV_CTL_EVENT_MASK_VALUE	(1<<0)	/* element value was changed */
1132#define SNDRV_CTL_EVENT_MASK_INFO	(1<<1)	/* element info was changed */
1133#define SNDRV_CTL_EVENT_MASK_ADD	(1<<2)	/* element was added */
1134#define SNDRV_CTL_EVENT_MASK_TLV	(1<<3)	/* element TLV tree was changed */
1135#define SNDRV_CTL_EVENT_MASK_REMOVE	(~0U)	/* element was removed */
1136
1137struct snd_ctl_event {
1138	int type;	/* event type - SNDRV_CTL_EVENT_* */
1139	union {
1140		struct {
1141			unsigned int mask;
1142			struct snd_ctl_elem_id id;
1143		} elem;
1144		unsigned char data8[60];
1145	} data;
1146};
1147
1148/*
1149 *  Control names
1150 */
1151
1152#define SNDRV_CTL_NAME_NONE				""
1153#define SNDRV_CTL_NAME_PLAYBACK				"Playback "
1154#define SNDRV_CTL_NAME_CAPTURE				"Capture "
1155
1156#define SNDRV_CTL_NAME_IEC958_NONE			""
1157#define SNDRV_CTL_NAME_IEC958_SWITCH			"Switch"
1158#define SNDRV_CTL_NAME_IEC958_VOLUME			"Volume"
1159#define SNDRV_CTL_NAME_IEC958_DEFAULT			"Default"
1160#define SNDRV_CTL_NAME_IEC958_MASK			"Mask"
1161#define SNDRV_CTL_NAME_IEC958_CON_MASK			"Con Mask"
1162#define SNDRV_CTL_NAME_IEC958_PRO_MASK			"Pro Mask"
1163#define SNDRV_CTL_NAME_IEC958_PCM_STREAM		"PCM Stream"
1164#define SNDRV_CTL_NAME_IEC958(expl,direction,what)	"IEC958 " expl SNDRV_CTL_NAME_##direction SNDRV_CTL_NAME_IEC958_##what
1165
1166#endif /* _UAPI__SOUND_ASOUND_H */