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android_kernel_xiaomi_sm8350/include/sound/asound.h
Jaroslav Kysela 5ca307b28d [ALSA] Timer API - SNDRV_TIMER_EVENT_RESUME - val is resolution in ns 
ALSA Core

Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2005-08-30 08:46:21 +02:00

934 lines
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/*
* Advanced Linux Sound Architecture - ALSA - Driver
* Copyright (c) 1994-2003 by Jaroslav Kysela <perex@suse.cz>,
* Abramo Bagnara <abramo@alsa-project.org>
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef __SOUND_ASOUND_H
#define __SOUND_ASOUND_H
#if defined(LINUX) || defined(__LINUX__) || defined(__linux__)
#include <linux/ioctl.h>
#ifdef __KERNEL__
#include <linux/types.h>
#include <linux/time.h>
#include <asm/byteorder.h>
#ifdef __LITTLE_ENDIAN
#define SNDRV_LITTLE_ENDIAN
#else
#ifdef __BIG_ENDIAN
#define SNDRV_BIG_ENDIAN
#else
#error "Unsupported endian..."
#endif
#endif
#else /* !__KERNEL__ */
#include <endian.h>
#if __BYTE_ORDER == __LITTLE_ENDIAN
#define SNDRV_LITTLE_ENDIAN
#elif __BYTE_ORDER == __BIG_ENDIAN
#define SNDRV_BIG_ENDIAN
#else
#error "Unsupported endian..."
#endif
#endif /* __KERNEL **/
#endif /* LINUX */
#ifndef __KERNEL__
#include <sys/time.h>
#include <sys/types.h>
#endif
/*
* protocol version
*/
#define SNDRV_PROTOCOL_VERSION(major, minor, subminor) (((major)<<16)|((minor)<<8)|(subminor))
#define SNDRV_PROTOCOL_MAJOR(version) (((version)>>16)&0xffff)
#define SNDRV_PROTOCOL_MINOR(version) (((version)>>8)&0xff)
#define SNDRV_PROTOCOL_MICRO(version) ((version)&0xff)
#define SNDRV_PROTOCOL_INCOMPATIBLE(kversion, uversion) \
(SNDRV_PROTOCOL_MAJOR(kversion) != SNDRV_PROTOCOL_MAJOR(uversion) || \
(SNDRV_PROTOCOL_MAJOR(kversion) == SNDRV_PROTOCOL_MAJOR(uversion) && \
SNDRV_PROTOCOL_MINOR(kversion) != SNDRV_PROTOCOL_MINOR(uversion)))
/****************************************************************************
* *
* Digital audio interface *
* *
****************************************************************************/
struct sndrv_aes_iec958 {
unsigned char status[24]; /* AES/IEC958 channel status bits */
unsigned char subcode[147]; /* AES/IEC958 subcode bits */
unsigned char pad; /* nothing */
unsigned char dig_subframe[4]; /* AES/IEC958 subframe bits */
};
/****************************************************************************
* *
* Section for driver hardware dependent interface - /dev/snd/hw? *
* *
****************************************************************************/
#define SNDRV_HWDEP_VERSION SNDRV_PROTOCOL_VERSION(1, 0, 1)
enum sndrv_hwdep_iface {
SNDRV_HWDEP_IFACE_OPL2 = 0,
SNDRV_HWDEP_IFACE_OPL3,
SNDRV_HWDEP_IFACE_OPL4,
SNDRV_HWDEP_IFACE_SB16CSP, /* Creative Signal Processor */
SNDRV_HWDEP_IFACE_EMU10K1, /* FX8010 processor in EMU10K1 chip */
SNDRV_HWDEP_IFACE_YSS225, /* Yamaha FX processor */
SNDRV_HWDEP_IFACE_ICS2115, /* Wavetable synth */
SNDRV_HWDEP_IFACE_SSCAPE, /* Ensoniq SoundScape ISA card (MC68EC000) */
SNDRV_HWDEP_IFACE_VX, /* Digigram VX cards */
SNDRV_HWDEP_IFACE_MIXART, /* Digigram miXart cards */
SNDRV_HWDEP_IFACE_USX2Y, /* Tascam US122, US224 & US428 usb */
SNDRV_HWDEP_IFACE_EMUX_WAVETABLE, /* EmuX wavetable */
SNDRV_HWDEP_IFACE_BLUETOOTH, /* Bluetooth audio */
SNDRV_HWDEP_IFACE_USX2Y_PCM, /* Tascam US122, US224 & US428 rawusb pcm */
SNDRV_HWDEP_IFACE_PCXHR, /* Digigram PCXHR */
SNDRV_HWDEP_IFACE_SB_RC, /* SB Extigy/Audigy2NX remote control */
/* Don't forget to change the following: */
SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_SB_RC
};
struct sndrv_hwdep_info {
unsigned int device; /* WR: device number */
int card; /* R: card number */
unsigned char id[64]; /* ID (user selectable) */
unsigned char name[80]; /* hwdep name */
enum sndrv_hwdep_iface iface; /* hwdep interface */
unsigned char reserved[64]; /* reserved for future */
};
/* generic DSP loader */
struct sndrv_hwdep_dsp_status {
unsigned int version; /* R: driver-specific version */
unsigned char id[32]; /* R: driver-specific ID string */
unsigned int num_dsps; /* R: number of DSP images to transfer */
unsigned int dsp_loaded; /* R: bit flags indicating the loaded DSPs */
unsigned int chip_ready; /* R: 1 = initialization finished */
unsigned char reserved[16]; /* reserved for future use */
};
struct sndrv_hwdep_dsp_image {
unsigned int index; /* W: DSP index */
unsigned char name[64]; /* W: ID (e.g. file name) */
unsigned char __user *image; /* W: binary image */
size_t length; /* W: size of image in bytes */
unsigned long driver_data; /* W: driver-specific data */
};
enum {
SNDRV_HWDEP_IOCTL_PVERSION = _IOR ('H', 0x00, int),
SNDRV_HWDEP_IOCTL_INFO = _IOR ('H', 0x01, struct sndrv_hwdep_info),
SNDRV_HWDEP_IOCTL_DSP_STATUS = _IOR('H', 0x02, struct sndrv_hwdep_dsp_status),
SNDRV_HWDEP_IOCTL_DSP_LOAD = _IOW('H', 0x03, struct sndrv_hwdep_dsp_image)
};
/*****************************************************************************
* *
* Digital Audio (PCM) interface - /dev/snd/pcm?? *
* *
*****************************************************************************/
#define SNDRV_PCM_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 7)
typedef unsigned long sndrv_pcm_uframes_t;
typedef long sndrv_pcm_sframes_t;
enum sndrv_pcm_class {
SNDRV_PCM_CLASS_GENERIC = 0, /* standard mono or stereo device */
SNDRV_PCM_CLASS_MULTI, /* multichannel device */
SNDRV_PCM_CLASS_MODEM, /* software modem class */
SNDRV_PCM_CLASS_DIGITIZER, /* digitizer class */
/* Don't forget to change the following: */
SNDRV_PCM_CLASS_LAST = SNDRV_PCM_CLASS_DIGITIZER,
};
enum sndrv_pcm_subclass {
SNDRV_PCM_SUBCLASS_GENERIC_MIX = 0, /* mono or stereo subdevices are mixed together */
SNDRV_PCM_SUBCLASS_MULTI_MIX, /* multichannel subdevices are mixed together */
/* Don't forget to change the following: */
SNDRV_PCM_SUBCLASS_LAST = SNDRV_PCM_SUBCLASS_MULTI_MIX,
};
enum sndrv_pcm_stream {
SNDRV_PCM_STREAM_PLAYBACK = 0,
SNDRV_PCM_STREAM_CAPTURE,
SNDRV_PCM_STREAM_LAST = SNDRV_PCM_STREAM_CAPTURE,
};
enum sndrv_pcm_access {
SNDRV_PCM_ACCESS_MMAP_INTERLEAVED = 0, /* interleaved mmap */
SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED, /* noninterleaved mmap */
SNDRV_PCM_ACCESS_MMAP_COMPLEX, /* complex mmap */
SNDRV_PCM_ACCESS_RW_INTERLEAVED, /* readi/writei */
SNDRV_PCM_ACCESS_RW_NONINTERLEAVED, /* readn/writen */
SNDRV_PCM_ACCESS_LAST = SNDRV_PCM_ACCESS_RW_NONINTERLEAVED,
};
enum sndrv_pcm_format {
SNDRV_PCM_FORMAT_S8 = 0,
SNDRV_PCM_FORMAT_U8,
SNDRV_PCM_FORMAT_S16_LE,
SNDRV_PCM_FORMAT_S16_BE,
SNDRV_PCM_FORMAT_U16_LE,
SNDRV_PCM_FORMAT_U16_BE,
SNDRV_PCM_FORMAT_S24_LE, /* low three bytes */
SNDRV_PCM_FORMAT_S24_BE, /* low three bytes */
SNDRV_PCM_FORMAT_U24_LE, /* low three bytes */
SNDRV_PCM_FORMAT_U24_BE, /* low three bytes */
SNDRV_PCM_FORMAT_S32_LE,
SNDRV_PCM_FORMAT_S32_BE,
SNDRV_PCM_FORMAT_U32_LE,
SNDRV_PCM_FORMAT_U32_BE,
SNDRV_PCM_FORMAT_FLOAT_LE, /* 4-byte float, IEEE-754 32-bit, range -1.0 to 1.0 */
SNDRV_PCM_FORMAT_FLOAT_BE, /* 4-byte float, IEEE-754 32-bit, range -1.0 to 1.0 */
SNDRV_PCM_FORMAT_FLOAT64_LE, /* 8-byte float, IEEE-754 64-bit, range -1.0 to 1.0 */
SNDRV_PCM_FORMAT_FLOAT64_BE, /* 8-byte float, IEEE-754 64-bit, range -1.0 to 1.0 */
SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE, /* IEC-958 subframe, Little Endian */
SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE, /* IEC-958 subframe, Big Endian */
SNDRV_PCM_FORMAT_MU_LAW,
SNDRV_PCM_FORMAT_A_LAW,
SNDRV_PCM_FORMAT_IMA_ADPCM,
SNDRV_PCM_FORMAT_MPEG,
SNDRV_PCM_FORMAT_GSM,
SNDRV_PCM_FORMAT_SPECIAL = 31,
SNDRV_PCM_FORMAT_S24_3LE = 32, /* in three bytes */
SNDRV_PCM_FORMAT_S24_3BE, /* in three bytes */
SNDRV_PCM_FORMAT_U24_3LE, /* in three bytes */
SNDRV_PCM_FORMAT_U24_3BE, /* in three bytes */
SNDRV_PCM_FORMAT_S20_3LE, /* in three bytes */
SNDRV_PCM_FORMAT_S20_3BE, /* in three bytes */
SNDRV_PCM_FORMAT_U20_3LE, /* in three bytes */
SNDRV_PCM_FORMAT_U20_3BE, /* in three bytes */
SNDRV_PCM_FORMAT_S18_3LE, /* in three bytes */
SNDRV_PCM_FORMAT_S18_3BE, /* in three bytes */
SNDRV_PCM_FORMAT_U18_3LE, /* in three bytes */
SNDRV_PCM_FORMAT_U18_3BE, /* in three bytes */
SNDRV_PCM_FORMAT_LAST = SNDRV_PCM_FORMAT_U18_3BE,
#ifdef SNDRV_LITTLE_ENDIAN
SNDRV_PCM_FORMAT_S16 = SNDRV_PCM_FORMAT_S16_LE,
SNDRV_PCM_FORMAT_U16 = SNDRV_PCM_FORMAT_U16_LE,
SNDRV_PCM_FORMAT_S24 = SNDRV_PCM_FORMAT_S24_LE,
SNDRV_PCM_FORMAT_U24 = SNDRV_PCM_FORMAT_U24_LE,
SNDRV_PCM_FORMAT_S32 = SNDRV_PCM_FORMAT_S32_LE,
SNDRV_PCM_FORMAT_U32 = SNDRV_PCM_FORMAT_U32_LE,
SNDRV_PCM_FORMAT_FLOAT = SNDRV_PCM_FORMAT_FLOAT_LE,
SNDRV_PCM_FORMAT_FLOAT64 = SNDRV_PCM_FORMAT_FLOAT64_LE,
SNDRV_PCM_FORMAT_IEC958_SUBFRAME = SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE,
#endif
#ifdef SNDRV_BIG_ENDIAN
SNDRV_PCM_FORMAT_S16 = SNDRV_PCM_FORMAT_S16_BE,
SNDRV_PCM_FORMAT_U16 = SNDRV_PCM_FORMAT_U16_BE,
SNDRV_PCM_FORMAT_S24 = SNDRV_PCM_FORMAT_S24_BE,
SNDRV_PCM_FORMAT_U24 = SNDRV_PCM_FORMAT_U24_BE,
SNDRV_PCM_FORMAT_S32 = SNDRV_PCM_FORMAT_S32_BE,
SNDRV_PCM_FORMAT_U32 = SNDRV_PCM_FORMAT_U32_BE,
SNDRV_PCM_FORMAT_FLOAT = SNDRV_PCM_FORMAT_FLOAT_BE,
SNDRV_PCM_FORMAT_FLOAT64 = SNDRV_PCM_FORMAT_FLOAT64_BE,
SNDRV_PCM_FORMAT_IEC958_SUBFRAME = SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE,
#endif
};
enum sndrv_pcm_subformat {
SNDRV_PCM_SUBFORMAT_STD = 0,
SNDRV_PCM_SUBFORMAT_LAST = SNDRV_PCM_SUBFORMAT_STD,
};
#define SNDRV_PCM_INFO_MMAP 0x00000001 /* hardware supports mmap */
#define SNDRV_PCM_INFO_MMAP_VALID 0x00000002 /* period data are valid during transfer */
#define SNDRV_PCM_INFO_DOUBLE 0x00000004 /* Double buffering needed for PCM start/stop */
#define SNDRV_PCM_INFO_BATCH 0x00000010 /* double buffering */
#define SNDRV_PCM_INFO_INTERLEAVED 0x00000100 /* channels are interleaved */
#define SNDRV_PCM_INFO_NONINTERLEAVED 0x00000200 /* channels are not interleaved */
#define SNDRV_PCM_INFO_COMPLEX 0x00000400 /* complex frame organization (mmap only) */
#define SNDRV_PCM_INFO_BLOCK_TRANSFER 0x00010000 /* hardware transfer block of samples */
#define SNDRV_PCM_INFO_OVERRANGE 0x00020000 /* hardware supports ADC (capture) overrange detection */
#define SNDRV_PCM_INFO_RESUME 0x00040000 /* hardware supports stream resume after suspend */
#define SNDRV_PCM_INFO_PAUSE 0x00080000 /* pause ioctl is supported */
#define SNDRV_PCM_INFO_HALF_DUPLEX 0x00100000 /* only half duplex */
#define SNDRV_PCM_INFO_JOINT_DUPLEX 0x00200000 /* playback and capture stream are somewhat correlated */
#define SNDRV_PCM_INFO_SYNC_START 0x00400000 /* pcm support some kind of sync go */
enum sndrv_pcm_state {
SNDRV_PCM_STATE_OPEN = 0, /* stream is open */
SNDRV_PCM_STATE_SETUP, /* stream has a setup */
SNDRV_PCM_STATE_PREPARED, /* stream is ready to start */
SNDRV_PCM_STATE_RUNNING, /* stream is running */
SNDRV_PCM_STATE_XRUN, /* stream reached an xrun */
SNDRV_PCM_STATE_DRAINING, /* stream is draining */
SNDRV_PCM_STATE_PAUSED, /* stream is paused */
SNDRV_PCM_STATE_SUSPENDED, /* hardware is suspended */
SNDRV_PCM_STATE_DISCONNECTED, /* hardware is disconnected */
SNDRV_PCM_STATE_LAST = SNDRV_PCM_STATE_DISCONNECTED,
};
enum {
SNDRV_PCM_MMAP_OFFSET_DATA = 0x00000000,
SNDRV_PCM_MMAP_OFFSET_STATUS = 0x80000000,
SNDRV_PCM_MMAP_OFFSET_CONTROL = 0x81000000,
};
union sndrv_pcm_sync_id {
unsigned char id[16];
unsigned short id16[8];
unsigned int id32[4];
};
struct sndrv_pcm_info {
unsigned int device; /* RO/WR (control): device number */
unsigned int subdevice; /* RO/WR (control): subdevice number */
enum sndrv_pcm_stream stream; /* RO/WR (control): stream number */
int card; /* R: card number */
unsigned char id[64]; /* ID (user selectable) */
unsigned char name[80]; /* name of this device */
unsigned char subname[32]; /* subdevice name */
enum sndrv_pcm_class dev_class; /* SNDRV_PCM_CLASS_* */
enum sndrv_pcm_subclass dev_subclass; /* SNDRV_PCM_SUBCLASS_* */
unsigned int subdevices_count;
unsigned int subdevices_avail;
union sndrv_pcm_sync_id sync; /* hardware synchronization ID */
unsigned char reserved[64]; /* reserved for future... */
};
enum sndrv_pcm_hw_param {
SNDRV_PCM_HW_PARAM_ACCESS = 0, /* Access type */
SNDRV_PCM_HW_PARAM_FIRST_MASK = SNDRV_PCM_HW_PARAM_ACCESS,
SNDRV_PCM_HW_PARAM_FORMAT, /* Format */
SNDRV_PCM_HW_PARAM_SUBFORMAT, /* Subformat */
SNDRV_PCM_HW_PARAM_LAST_MASK = SNDRV_PCM_HW_PARAM_SUBFORMAT,
SNDRV_PCM_HW_PARAM_SAMPLE_BITS = 8, /* Bits per sample */
SNDRV_PCM_HW_PARAM_FIRST_INTERVAL = SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
SNDRV_PCM_HW_PARAM_FRAME_BITS, /* Bits per frame */
SNDRV_PCM_HW_PARAM_CHANNELS, /* Channels */
SNDRV_PCM_HW_PARAM_RATE, /* Approx rate */
SNDRV_PCM_HW_PARAM_PERIOD_TIME, /* Approx distance between interrupts
in us */
SNDRV_PCM_HW_PARAM_PERIOD_SIZE, /* Approx frames between interrupts */
SNDRV_PCM_HW_PARAM_PERIOD_BYTES, /* Approx bytes between interrupts */
SNDRV_PCM_HW_PARAM_PERIODS, /* Approx interrupts per buffer */
SNDRV_PCM_HW_PARAM_BUFFER_TIME, /* Approx duration of buffer in us */
SNDRV_PCM_HW_PARAM_BUFFER_SIZE, /* Size of buffer in frames */
SNDRV_PCM_HW_PARAM_BUFFER_BYTES, /* Size of buffer in bytes */
SNDRV_PCM_HW_PARAM_TICK_TIME, /* Approx tick duration in us */
SNDRV_PCM_HW_PARAM_LAST_INTERVAL = SNDRV_PCM_HW_PARAM_TICK_TIME
};
#define SNDRV_PCM_HW_PARAMS_NORESAMPLE (1<<0) /* avoid rate resampling */
struct sndrv_interval {
unsigned int min, max;
unsigned int openmin:1,
openmax:1,
integer:1,
empty:1;
};
#define SNDRV_MASK_MAX 256
struct sndrv_mask {
u_int32_t bits[(SNDRV_MASK_MAX+31)/32];
};
struct sndrv_pcm_hw_params {
unsigned int flags;
struct sndrv_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK -
SNDRV_PCM_HW_PARAM_FIRST_MASK + 1];
struct sndrv_mask mres[5]; /* reserved masks */
struct sndrv_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL -
SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];
struct sndrv_interval ires[9]; /* reserved intervals */
unsigned int rmask; /* W: requested masks */
unsigned int cmask; /* R: changed masks */
unsigned int info; /* R: Info flags for returned setup */
unsigned int msbits; /* R: used most significant bits */
unsigned int rate_num; /* R: rate numerator */
unsigned int rate_den; /* R: rate denominator */
sndrv_pcm_uframes_t fifo_size; /* R: chip FIFO size in frames */
unsigned char reserved[64]; /* reserved for future */
};
enum sndrv_pcm_tstamp {
SNDRV_PCM_TSTAMP_NONE = 0,
SNDRV_PCM_TSTAMP_MMAP,
SNDRV_PCM_TSTAMP_LAST = SNDRV_PCM_TSTAMP_MMAP,
};
struct sndrv_pcm_sw_params {
enum sndrv_pcm_tstamp tstamp_mode; /* timestamp mode */
unsigned int period_step;
unsigned int sleep_min; /* min ticks to sleep */
sndrv_pcm_uframes_t avail_min; /* min avail frames for wakeup */
sndrv_pcm_uframes_t xfer_align; /* xfer size need to be a multiple */
sndrv_pcm_uframes_t start_threshold; /* min hw_avail frames for automatic start */
sndrv_pcm_uframes_t stop_threshold; /* min avail frames for automatic stop */
sndrv_pcm_uframes_t silence_threshold; /* min distance from noise for silence filling */
sndrv_pcm_uframes_t silence_size; /* silence block size */
sndrv_pcm_uframes_t boundary; /* pointers wrap point */
unsigned char reserved[64]; /* reserved for future */
};
struct sndrv_pcm_channel_info {
unsigned int channel;
off_t offset; /* mmap offset */
unsigned int first; /* offset to first sample in bits */
unsigned int step; /* samples distance in bits */
};
struct sndrv_pcm_status {
enum sndrv_pcm_state state; /* stream state */
struct timespec trigger_tstamp; /* time when stream was started/stopped/paused */
struct timespec tstamp; /* reference timestamp */
sndrv_pcm_uframes_t appl_ptr; /* appl ptr */
sndrv_pcm_uframes_t hw_ptr; /* hw ptr */
sndrv_pcm_sframes_t delay; /* current delay in frames */
sndrv_pcm_uframes_t avail; /* number of frames available */
sndrv_pcm_uframes_t avail_max; /* max frames available on hw since last status */
sndrv_pcm_uframes_t overrange; /* count of ADC (capture) overrange detections from last status */
enum sndrv_pcm_state suspended_state; /* suspended stream state */
unsigned char reserved[60]; /* must be filled with zero */
};
struct sndrv_pcm_mmap_status {
enum sndrv_pcm_state state; /* RO: state - SNDRV_PCM_STATE_XXXX */
int pad1; /* Needed for 64 bit alignment */
sndrv_pcm_uframes_t hw_ptr; /* RO: hw ptr (0...boundary-1) */
struct timespec tstamp; /* Timestamp */
enum sndrv_pcm_state suspended_state; /* RO: suspended stream state */
};
struct sndrv_pcm_mmap_control {
sndrv_pcm_uframes_t appl_ptr; /* RW: appl ptr (0...boundary-1) */
sndrv_pcm_uframes_t avail_min; /* RW: min available frames for wakeup */
};
#define SNDRV_PCM_SYNC_PTR_HWSYNC (1<<0) /* execute hwsync */
#define SNDRV_PCM_SYNC_PTR_APPL (1<<1) /* get appl_ptr from driver (r/w op) */
#define SNDRV_PCM_SYNC_PTR_AVAIL_MIN (1<<2) /* get avail_min from driver */
struct sndrv_pcm_sync_ptr {
unsigned int flags;
union {
struct sndrv_pcm_mmap_status status;
unsigned char reserved[64];
} s;
union {
struct sndrv_pcm_mmap_control control;
unsigned char reserved[64];
} c;
};
struct sndrv_xferi {
sndrv_pcm_sframes_t result;
void __user *buf;
sndrv_pcm_uframes_t frames;
};
struct sndrv_xfern {
sndrv_pcm_sframes_t result;
void __user * __user *bufs;
sndrv_pcm_uframes_t frames;
};
enum {
SNDRV_PCM_IOCTL_PVERSION = _IOR('A', 0x00, int),
SNDRV_PCM_IOCTL_INFO = _IOR('A', 0x01, struct sndrv_pcm_info),
SNDRV_PCM_IOCTL_TSTAMP = _IOW('A', 0x02, int),
SNDRV_PCM_IOCTL_HW_REFINE = _IOWR('A', 0x10, struct sndrv_pcm_hw_params),
SNDRV_PCM_IOCTL_HW_PARAMS = _IOWR('A', 0x11, struct sndrv_pcm_hw_params),
SNDRV_PCM_IOCTL_HW_FREE = _IO('A', 0x12),
SNDRV_PCM_IOCTL_SW_PARAMS = _IOWR('A', 0x13, struct sndrv_pcm_sw_params),
SNDRV_PCM_IOCTL_STATUS = _IOR('A', 0x20, struct sndrv_pcm_status),
SNDRV_PCM_IOCTL_DELAY = _IOR('A', 0x21, sndrv_pcm_sframes_t),
SNDRV_PCM_IOCTL_HWSYNC = _IO('A', 0x22),
SNDRV_PCM_IOCTL_SYNC_PTR = _IOWR('A', 0x23, struct sndrv_pcm_sync_ptr),
SNDRV_PCM_IOCTL_CHANNEL_INFO = _IOR('A', 0x32, struct sndrv_pcm_channel_info),
SNDRV_PCM_IOCTL_PREPARE = _IO('A', 0x40),
SNDRV_PCM_IOCTL_RESET = _IO('A', 0x41),
SNDRV_PCM_IOCTL_START = _IO('A', 0x42),
SNDRV_PCM_IOCTL_DROP = _IO('A', 0x43),
SNDRV_PCM_IOCTL_DRAIN = _IO('A', 0x44),
SNDRV_PCM_IOCTL_PAUSE = _IOW('A', 0x45, int),
SNDRV_PCM_IOCTL_REWIND = _IOW('A', 0x46, sndrv_pcm_uframes_t),
SNDRV_PCM_IOCTL_RESUME = _IO('A', 0x47),
SNDRV_PCM_IOCTL_XRUN = _IO('A', 0x48),
SNDRV_PCM_IOCTL_FORWARD = _IOW('A', 0x49, sndrv_pcm_uframes_t),
SNDRV_PCM_IOCTL_WRITEI_FRAMES = _IOW('A', 0x50, struct sndrv_xferi),
SNDRV_PCM_IOCTL_READI_FRAMES = _IOR('A', 0x51, struct sndrv_xferi),
SNDRV_PCM_IOCTL_WRITEN_FRAMES = _IOW('A', 0x52, struct sndrv_xfern),
SNDRV_PCM_IOCTL_READN_FRAMES = _IOR('A', 0x53, struct sndrv_xfern),
SNDRV_PCM_IOCTL_LINK = _IOW('A', 0x60, int),
SNDRV_PCM_IOCTL_UNLINK = _IO('A', 0x61),
};
/* Trick to make alsa-lib/acinclude.m4 happy */
#define SNDRV_PCM_IOCTL_REWIND SNDRV_PCM_IOCTL_REWIND
/*****************************************************************************
* *
* MIDI v1.0 interface *
* *
*****************************************************************************/
/*
* Raw MIDI section - /dev/snd/midi??
*/
#define SNDRV_RAWMIDI_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 0)
enum sndrv_rawmidi_stream {
SNDRV_RAWMIDI_STREAM_OUTPUT = 0,
SNDRV_RAWMIDI_STREAM_INPUT,
SNDRV_RAWMIDI_STREAM_LAST = SNDRV_RAWMIDI_STREAM_INPUT,
};
#define SNDRV_RAWMIDI_INFO_OUTPUT 0x00000001
#define SNDRV_RAWMIDI_INFO_INPUT 0x00000002
#define SNDRV_RAWMIDI_INFO_DUPLEX 0x00000004
struct sndrv_rawmidi_info {
unsigned int device; /* RO/WR (control): device number */
unsigned int subdevice; /* RO/WR (control): subdevice number */
enum sndrv_rawmidi_stream stream; /* WR: stream */
int card; /* R: card number */
unsigned int flags; /* SNDRV_RAWMIDI_INFO_XXXX */
unsigned char id[64]; /* ID (user selectable) */
unsigned char name[80]; /* name of device */
unsigned char subname[32]; /* name of active or selected subdevice */
unsigned int subdevices_count;
unsigned int subdevices_avail;
unsigned char reserved[64]; /* reserved for future use */
};
struct sndrv_rawmidi_params {
enum sndrv_rawmidi_stream stream;
size_t buffer_size; /* queue size in bytes */
size_t avail_min; /* minimum avail bytes for wakeup */
unsigned int no_active_sensing: 1; /* do not send active sensing byte in close() */
unsigned char reserved[16]; /* reserved for future use */
};
struct sndrv_rawmidi_status {
enum sndrv_rawmidi_stream stream;
struct timespec tstamp; /* Timestamp */
size_t avail; /* available bytes */
size_t xruns; /* count of overruns since last status (in bytes) */
unsigned char reserved[16]; /* reserved for future use */
};
enum {
SNDRV_RAWMIDI_IOCTL_PVERSION = _IOR('W', 0x00, int),
SNDRV_RAWMIDI_IOCTL_INFO = _IOR('W', 0x01, struct sndrv_rawmidi_info),
SNDRV_RAWMIDI_IOCTL_PARAMS = _IOWR('W', 0x10, struct sndrv_rawmidi_params),
SNDRV_RAWMIDI_IOCTL_STATUS = _IOWR('W', 0x20, struct sndrv_rawmidi_status),
SNDRV_RAWMIDI_IOCTL_DROP = _IOW('W', 0x30, int),
SNDRV_RAWMIDI_IOCTL_DRAIN = _IOW('W', 0x31, int),
};
/*
* Timer section - /dev/snd/timer
*/
#define SNDRV_TIMER_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 5)
enum sndrv_timer_class {
SNDRV_TIMER_CLASS_NONE = -1,
SNDRV_TIMER_CLASS_SLAVE = 0,
SNDRV_TIMER_CLASS_GLOBAL,
SNDRV_TIMER_CLASS_CARD,
SNDRV_TIMER_CLASS_PCM,
SNDRV_TIMER_CLASS_LAST = SNDRV_TIMER_CLASS_PCM,
};
/* slave timer classes */
enum sndrv_timer_slave_class {
SNDRV_TIMER_SCLASS_NONE = 0,
SNDRV_TIMER_SCLASS_APPLICATION,
SNDRV_TIMER_SCLASS_SEQUENCER, /* alias */
SNDRV_TIMER_SCLASS_OSS_SEQUENCER, /* alias */
SNDRV_TIMER_SCLASS_LAST = SNDRV_TIMER_SCLASS_OSS_SEQUENCER,
};
/* global timers (device member) */
#define SNDRV_TIMER_GLOBAL_SYSTEM 0
#define SNDRV_TIMER_GLOBAL_RTC 1
#define SNDRV_TIMER_GLOBAL_HPET 2
/* info flags */
#define SNDRV_TIMER_FLG_SLAVE (1<<0) /* cannot be controlled */
struct sndrv_timer_id {
enum sndrv_timer_class dev_class;
enum sndrv_timer_slave_class dev_sclass;
int card;
int device;
int subdevice;
};
struct sndrv_timer_ginfo {
struct sndrv_timer_id tid; /* requested timer ID */
unsigned int flags; /* timer flags - SNDRV_TIMER_FLG_* */
int card; /* card number */
unsigned char id[64]; /* timer identification */
unsigned char name[80]; /* timer name */
unsigned long reserved0; /* reserved for future use */
unsigned long resolution; /* average period resolution in ns */
unsigned long resolution_min; /* minimal period resolution in ns */
unsigned long resolution_max; /* maximal period resolution in ns */
unsigned int clients; /* active timer clients */
unsigned char reserved[32];
};
struct sndrv_timer_gparams {
struct sndrv_timer_id tid; /* requested timer ID */
unsigned long period_num; /* requested precise period duration (in seconds) - numerator */
unsigned long period_den; /* requested precise period duration (in seconds) - denominator */
unsigned char reserved[32];
};
struct sndrv_timer_gstatus {
struct sndrv_timer_id tid; /* requested timer ID */
unsigned long resolution; /* current period resolution in ns */
unsigned long resolution_num; /* precise current period resolution (in seconds) - numerator */
unsigned long resolution_den; /* precise current period resolution (in seconds) - denominator */
unsigned char reserved[32];
};
struct sndrv_timer_select {
struct sndrv_timer_id id; /* bind to timer ID */
unsigned char reserved[32]; /* reserved */
};
struct sndrv_timer_info {
unsigned int flags; /* timer flags - SNDRV_TIMER_FLG_* */
int card; /* card number */
unsigned char id[64]; /* timer identificator */
unsigned char name[80]; /* timer name */
unsigned long reserved0; /* reserved for future use */
unsigned long resolution; /* average period resolution in ns */
unsigned char reserved[64]; /* reserved */
};
#define SNDRV_TIMER_PSFLG_AUTO (1<<0) /* auto start, otherwise one-shot */
#define SNDRV_TIMER_PSFLG_EXCLUSIVE (1<<1) /* exclusive use, precise start/stop/pause/continue */
#define SNDRV_TIMER_PSFLG_EARLY_EVENT (1<<2) /* write early event to the poll queue */
struct sndrv_timer_params {
unsigned int flags; /* flags - SNDRV_MIXER_PSFLG_* */
unsigned int ticks; /* requested resolution in ticks */
unsigned int queue_size; /* total size of queue (32-1024) */
unsigned int reserved0; /* reserved, was: failure locations */
unsigned int filter; /* event filter (bitmask of SNDRV_TIMER_EVENT_*) */
unsigned char reserved[60]; /* reserved */
};
struct sndrv_timer_status {
struct timespec tstamp; /* Timestamp - last update */
unsigned int resolution; /* current period resolution in ns */
unsigned int lost; /* counter of master tick lost */
unsigned int overrun; /* count of read queue overruns */
unsigned int queue; /* used queue size */
unsigned char reserved[64]; /* reserved */
};
enum {
SNDRV_TIMER_IOCTL_PVERSION = _IOR('T', 0x00, int),
SNDRV_TIMER_IOCTL_NEXT_DEVICE = _IOWR('T', 0x01, struct sndrv_timer_id),
SNDRV_TIMER_IOCTL_TREAD = _IOW('T', 0x02, int),
SNDRV_TIMER_IOCTL_GINFO = _IOWR('T', 0x03, struct sndrv_timer_ginfo),
SNDRV_TIMER_IOCTL_GPARAMS = _IOW('T', 0x04, struct sndrv_timer_gparams),
SNDRV_TIMER_IOCTL_GSTATUS = _IOWR('T', 0x05, struct sndrv_timer_gstatus),
SNDRV_TIMER_IOCTL_SELECT = _IOW('T', 0x10, struct sndrv_timer_select),
SNDRV_TIMER_IOCTL_INFO = _IOR('T', 0x11, struct sndrv_timer_info),
SNDRV_TIMER_IOCTL_PARAMS = _IOW('T', 0x12, struct sndrv_timer_params),
SNDRV_TIMER_IOCTL_STATUS = _IOR('T', 0x14, struct sndrv_timer_status),
/* The following four ioctls are changed since 1.0.9 due to confliction */
SNDRV_TIMER_IOCTL_START = _IO('T', 0xa0),
SNDRV_TIMER_IOCTL_STOP = _IO('T', 0xa1),
SNDRV_TIMER_IOCTL_CONTINUE = _IO('T', 0xa2),
SNDRV_TIMER_IOCTL_PAUSE = _IO('T', 0xa3),
};
struct sndrv_timer_read {
unsigned int resolution;
unsigned int ticks;
};
enum sndrv_timer_event {
SNDRV_TIMER_EVENT_RESOLUTION = 0, /* val = resolution in ns */
SNDRV_TIMER_EVENT_TICK, /* val = ticks */
SNDRV_TIMER_EVENT_START, /* val = resolution in ns */
SNDRV_TIMER_EVENT_STOP, /* val = 0 */
SNDRV_TIMER_EVENT_CONTINUE, /* val = resolution in ns */
SNDRV_TIMER_EVENT_PAUSE, /* val = 0 */
SNDRV_TIMER_EVENT_EARLY, /* val = 0, early event */
SNDRV_TIMER_EVENT_SUSPEND, /* val = 0 */
SNDRV_TIMER_EVENT_RESUME, /* val = resolution in ns */
/* master timer events for slave timer instances */
SNDRV_TIMER_EVENT_MSTART = SNDRV_TIMER_EVENT_START + 10,
SNDRV_TIMER_EVENT_MSTOP = SNDRV_TIMER_EVENT_STOP + 10,
SNDRV_TIMER_EVENT_MCONTINUE = SNDRV_TIMER_EVENT_CONTINUE + 10,
SNDRV_TIMER_EVENT_MPAUSE = SNDRV_TIMER_EVENT_PAUSE + 10,
SNDRV_TIMER_EVENT_MSUSPEND = SNDRV_TIMER_EVENT_SUSPEND + 10,
SNDRV_TIMER_EVENT_MRESUME = SNDRV_TIMER_EVENT_RESUME + 10,
};
struct sndrv_timer_tread {
enum sndrv_timer_event event;
struct timespec tstamp;
unsigned int val;
};
/****************************************************************************
* *
* Section for driver control interface - /dev/snd/control? *
* *
****************************************************************************/
#define SNDRV_CTL_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 3)
struct sndrv_ctl_card_info {
int card; /* card number */
int pad; /* reserved for future (was type) */
unsigned char id[16]; /* ID of card (user selectable) */
unsigned char driver[16]; /* Driver name */
unsigned char name[32]; /* Short name of soundcard */
unsigned char longname[80]; /* name + info text about soundcard */
unsigned char reserved_[16]; /* reserved for future (was ID of mixer) */
unsigned char mixername[80]; /* visual mixer identification */
unsigned char components[80]; /* card components / fine identification, delimited with one space (AC97 etc..) */
unsigned char reserved[48]; /* reserved for future */
};
enum sndrv_ctl_elem_type {
SNDRV_CTL_ELEM_TYPE_NONE = 0, /* invalid */
SNDRV_CTL_ELEM_TYPE_BOOLEAN, /* boolean type */
SNDRV_CTL_ELEM_TYPE_INTEGER, /* integer type */
SNDRV_CTL_ELEM_TYPE_ENUMERATED, /* enumerated type */
SNDRV_CTL_ELEM_TYPE_BYTES, /* byte array */
SNDRV_CTL_ELEM_TYPE_IEC958, /* IEC958 (S/PDIF) setup */
SNDRV_CTL_ELEM_TYPE_INTEGER64, /* 64-bit integer type */
SNDRV_CTL_ELEM_TYPE_LAST = SNDRV_CTL_ELEM_TYPE_INTEGER64,
};
enum sndrv_ctl_elem_iface {
SNDRV_CTL_ELEM_IFACE_CARD = 0, /* global control */
SNDRV_CTL_ELEM_IFACE_HWDEP, /* hardware dependent device */
SNDRV_CTL_ELEM_IFACE_MIXER, /* virtual mixer device */
SNDRV_CTL_ELEM_IFACE_PCM, /* PCM device */
SNDRV_CTL_ELEM_IFACE_RAWMIDI, /* RawMidi device */
SNDRV_CTL_ELEM_IFACE_TIMER, /* timer device */
SNDRV_CTL_ELEM_IFACE_SEQUENCER, /* sequencer client */
SNDRV_CTL_ELEM_IFACE_LAST = SNDRV_CTL_ELEM_IFACE_SEQUENCER,
};
#define SNDRV_CTL_ELEM_ACCESS_READ (1<<0)
#define SNDRV_CTL_ELEM_ACCESS_WRITE (1<<1)
#define SNDRV_CTL_ELEM_ACCESS_READWRITE (SNDRV_CTL_ELEM_ACCESS_READ|SNDRV_CTL_ELEM_ACCESS_WRITE)
#define SNDRV_CTL_ELEM_ACCESS_VOLATILE (1<<2) /* control value may be changed without a notification */
#define SNDRV_CTL_ELEM_ACCESS_TIMESTAMP (1<<2) /* when was control changed */
#define SNDRV_CTL_ELEM_ACCESS_INACTIVE (1<<8) /* control does actually nothing, but may be updated */
#define SNDRV_CTL_ELEM_ACCESS_LOCK (1<<9) /* write lock */
#define SNDRV_CTL_ELEM_ACCESS_OWNER (1<<10) /* write lock owner */
#define SNDRV_CTL_ELEM_ACCESS_USER (1<<29) /* user space element */
#define SNDRV_CTL_ELEM_ACCESS_DINDIRECT (1<<30) /* indirect access for matrix dimensions in the info structure */
#define SNDRV_CTL_ELEM_ACCESS_INDIRECT (1<<31) /* indirect access for element value in the value structure */
/* for further details see the ACPI and PCI power management specification */
#define SNDRV_CTL_POWER_D0 0x0000 /* full On */
#define SNDRV_CTL_POWER_D1 0x0100 /* partial On */
#define SNDRV_CTL_POWER_D2 0x0200 /* partial On */
#define SNDRV_CTL_POWER_D3 0x0300 /* Off */
#define SNDRV_CTL_POWER_D3hot (SNDRV_CTL_POWER_D3|0x0000) /* Off, with power */
#define SNDRV_CTL_POWER_D3cold (SNDRV_CTL_POWER_D3|0x0001) /* Off, without power */
struct sndrv_ctl_elem_id {
unsigned int numid; /* numeric identifier, zero = invalid */
enum sndrv_ctl_elem_iface iface; /* interface identifier */
unsigned int device; /* device/client number */
unsigned int subdevice; /* subdevice (substream) number */
unsigned char name[44]; /* ASCII name of item */
unsigned int index; /* index of item */
};
struct sndrv_ctl_elem_list {
unsigned int offset; /* W: first element ID to get */
unsigned int space; /* W: count of element IDs to get */
unsigned int used; /* R: count of element IDs set */
unsigned int count; /* R: count of all elements */
struct sndrv_ctl_elem_id __user *pids; /* R: IDs */
unsigned char reserved[50];
};
struct sndrv_ctl_elem_info {
struct sndrv_ctl_elem_id id; /* W: element ID */
enum sndrv_ctl_elem_type type; /* R: value type - SNDRV_CTL_ELEM_TYPE_* */
unsigned int access; /* R: value access (bitmask) - SNDRV_CTL_ELEM_ACCESS_* */
unsigned int count; /* count of values */
pid_t owner; /* owner's PID of this control */
union {
struct {
long min; /* R: minimum value */
long max; /* R: maximum value */
long step; /* R: step (0 variable) */
} integer;
struct {
long long min; /* R: minimum value */
long long max; /* R: maximum value */
long long step; /* R: step (0 variable) */
} integer64;
struct {
unsigned int items; /* R: number of items */
unsigned int item; /* W: item number */
char name[64]; /* R: value name */
} enumerated;
unsigned char reserved[128];
} value;
union {
unsigned short d[4]; /* dimensions */
unsigned short *d_ptr; /* indirect */
} dimen;
unsigned char reserved[64-4*sizeof(unsigned short)];
};
struct sndrv_ctl_elem_value {
struct sndrv_ctl_elem_id id; /* W: element ID */
unsigned int indirect: 1; /* W: use indirect pointer (xxx_ptr member) */
union {
union {
long value[128];
long *value_ptr;
} integer;
union {
long long value[64];
long long *value_ptr;
} integer64;
union {
unsigned int item[128];
unsigned int *item_ptr;
} enumerated;
union {
unsigned char data[512];
unsigned char *data_ptr;
} bytes;
struct sndrv_aes_iec958 iec958;
} value; /* RO */
struct timespec tstamp;
unsigned char reserved[128-sizeof(struct timespec)];
};
enum {
SNDRV_CTL_IOCTL_PVERSION = _IOR('U', 0x00, int),
SNDRV_CTL_IOCTL_CARD_INFO = _IOR('U', 0x01, struct sndrv_ctl_card_info),
SNDRV_CTL_IOCTL_ELEM_LIST = _IOWR('U', 0x10, struct sndrv_ctl_elem_list),
SNDRV_CTL_IOCTL_ELEM_INFO = _IOWR('U', 0x11, struct sndrv_ctl_elem_info),
SNDRV_CTL_IOCTL_ELEM_READ = _IOWR('U', 0x12, struct sndrv_ctl_elem_value),
SNDRV_CTL_IOCTL_ELEM_WRITE = _IOWR('U', 0x13, struct sndrv_ctl_elem_value),
SNDRV_CTL_IOCTL_ELEM_LOCK = _IOW('U', 0x14, struct sndrv_ctl_elem_id),
SNDRV_CTL_IOCTL_ELEM_UNLOCK = _IOW('U', 0x15, struct sndrv_ctl_elem_id),
SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS = _IOWR('U', 0x16, int),
SNDRV_CTL_IOCTL_ELEM_ADD = _IOWR('U', 0x17, struct sndrv_ctl_elem_info),
SNDRV_CTL_IOCTL_ELEM_REPLACE = _IOWR('U', 0x18, struct sndrv_ctl_elem_info),
SNDRV_CTL_IOCTL_ELEM_REMOVE = _IOWR('U', 0x19, struct sndrv_ctl_elem_id),
SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE = _IOWR('U', 0x20, int),
SNDRV_CTL_IOCTL_HWDEP_INFO = _IOR('U', 0x21, struct sndrv_hwdep_info),
SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE = _IOR('U', 0x30, int),
SNDRV_CTL_IOCTL_PCM_INFO = _IOWR('U', 0x31, struct sndrv_pcm_info),
SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE = _IOW('U', 0x32, int),
SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE = _IOWR('U', 0x40, int),
SNDRV_CTL_IOCTL_RAWMIDI_INFO = _IOWR('U', 0x41, struct sndrv_rawmidi_info),
SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE = _IOW('U', 0x42, int),
SNDRV_CTL_IOCTL_POWER = _IOWR('U', 0xd0, int),
SNDRV_CTL_IOCTL_POWER_STATE = _IOR('U', 0xd1, int),
};
/*
* Read interface.
*/
enum sndrv_ctl_event_type {
SNDRV_CTL_EVENT_ELEM = 0,
SNDRV_CTL_EVENT_LAST = SNDRV_CTL_EVENT_ELEM,
};
#define SNDRV_CTL_EVENT_MASK_VALUE (1<<0) /* element value was changed */
#define SNDRV_CTL_EVENT_MASK_INFO (1<<1) /* element info was changed */
#define SNDRV_CTL_EVENT_MASK_ADD (1<<2) /* element was added */
#define SNDRV_CTL_EVENT_MASK_REMOVE (~0U) /* element was removed */
struct sndrv_ctl_event {
enum sndrv_ctl_event_type type; /* event type - SNDRV_CTL_EVENT_* */
union {
struct {
unsigned int mask;
struct sndrv_ctl_elem_id id;
} elem;
unsigned char data8[60];
} data;
};
/*
* Control names
*/
#define SNDRV_CTL_NAME_NONE ""
#define SNDRV_CTL_NAME_PLAYBACK "Playback "
#define SNDRV_CTL_NAME_CAPTURE "Capture "
#define SNDRV_CTL_NAME_IEC958_NONE ""
#define SNDRV_CTL_NAME_IEC958_SWITCH "Switch"
#define SNDRV_CTL_NAME_IEC958_VOLUME "Volume"
#define SNDRV_CTL_NAME_IEC958_DEFAULT "Default"
#define SNDRV_CTL_NAME_IEC958_MASK "Mask"
#define SNDRV_CTL_NAME_IEC958_CON_MASK "Con Mask"
#define SNDRV_CTL_NAME_IEC958_PRO_MASK "Pro Mask"
#define SNDRV_CTL_NAME_IEC958_PCM_STREAM "PCM Stream"
#define SNDRV_CTL_NAME_IEC958(expl,direction,what) "IEC958 " expl SNDRV_CTL_NAME_##direction SNDRV_CTL_NAME_IEC958_##what
/*
*
*/
struct sndrv_xferv {
const struct iovec *vector;
unsigned long count;
};
enum {
SNDRV_IOCTL_READV = _IOW('K', 0x00, struct sndrv_xferv),
SNDRV_IOCTL_WRITEV = _IOW('K', 0x01, struct sndrv_xferv),
};
#endif /* __SOUND_ASOUND_H */
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