/*
   *  Advanced Linux Sound Architecture - ALSA - Driver

   *  Copyright (c) 1994-2003 by Jaroslav Kysela <perex@perex.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

  #include <linux/types.h>

  #ifdef __KERNEL__

  #include <linux/ioctl.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

  #endif /* __KERNEL__ **/

  
  /*
   *  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 snd_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_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 */

  	SNDRV_HWDEP_IFACE_HDA,		/* HD-audio */

  	SNDRV_HWDEP_IFACE_USB_STREAM,	/* direct access to usb stream */

  
  	/* Don't forget to change the following: */

  	SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_USB_STREAM

  };

  struct snd_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 */

  	int iface;			/* hwdep interface */

  	unsigned char reserved[64];	/* reserved for future */
  };
  
  /* generic DSP loader */

  struct snd_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 snd_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 */
  };

  #define SNDRV_HWDEP_IOCTL_PVERSION	_IOR ('H', 0x00, int)
  #define SNDRV_HWDEP_IOCTL_INFO		_IOR ('H', 0x01, struct snd_hwdep_info)
  #define SNDRV_HWDEP_IOCTL_DSP_STATUS	_IOR('H', 0x02, struct snd_hwdep_dsp_status)
  #define SNDRV_HWDEP_IOCTL_DSP_LOAD	_IOW('H', 0x03, struct snd_hwdep_dsp_image)

  
  /*****************************************************************************
   *                                                                           *
   *             Digital Audio (PCM) interface - /dev/snd/pcm??                *
   *                                                                           *
   *****************************************************************************/

  #define SNDRV_PCM_VERSION		SNDRV_PROTOCOL_VERSION(2, 0, 10)

  typedef unsigned long snd_pcm_uframes_t;
  typedef signed long snd_pcm_sframes_t;

  enum {

  	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_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_PLAYBACK = 0,
  	SNDRV_PCM_STREAM_CAPTURE,
  	SNDRV_PCM_STREAM_LAST = SNDRV_PCM_STREAM_CAPTURE,
  };

  typedef int __bitwise snd_pcm_access_t;
  #define	SNDRV_PCM_ACCESS_MMAP_INTERLEAVED	((__force snd_pcm_access_t) 0) /* interleaved mmap */
  #define	SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED	((__force snd_pcm_access_t) 1) /* noninterleaved mmap */
  #define	SNDRV_PCM_ACCESS_MMAP_COMPLEX		((__force snd_pcm_access_t) 2) /* complex mmap */
  #define	SNDRV_PCM_ACCESS_RW_INTERLEAVED		((__force snd_pcm_access_t) 3) /* readi/writei */
  #define	SNDRV_PCM_ACCESS_RW_NONINTERLEAVED	((__force snd_pcm_access_t) 4) /* readn/writen */
  #define	SNDRV_PCM_ACCESS_LAST		SNDRV_PCM_ACCESS_RW_NONINTERLEAVED
  
  typedef int __bitwise snd_pcm_format_t;
  #define	SNDRV_PCM_FORMAT_S8	((__force snd_pcm_format_t) 0)
  #define	SNDRV_PCM_FORMAT_U8	((__force snd_pcm_format_t) 1)
  #define	SNDRV_PCM_FORMAT_S16_LE	((__force snd_pcm_format_t) 2)
  #define	SNDRV_PCM_FORMAT_S16_BE	((__force snd_pcm_format_t) 3)
  #define	SNDRV_PCM_FORMAT_U16_LE	((__force snd_pcm_format_t) 4)
  #define	SNDRV_PCM_FORMAT_U16_BE	((__force snd_pcm_format_t) 5)
  #define	SNDRV_PCM_FORMAT_S24_LE	((__force snd_pcm_format_t) 6) /* low three bytes */
  #define	SNDRV_PCM_FORMAT_S24_BE	((__force snd_pcm_format_t) 7) /* low three bytes */
  #define	SNDRV_PCM_FORMAT_U24_LE	((__force snd_pcm_format_t) 8) /* low three bytes */
  #define	SNDRV_PCM_FORMAT_U24_BE	((__force snd_pcm_format_t) 9) /* low three bytes */
  #define	SNDRV_PCM_FORMAT_S32_LE	((__force snd_pcm_format_t) 10)
  #define	SNDRV_PCM_FORMAT_S32_BE	((__force snd_pcm_format_t) 11)
  #define	SNDRV_PCM_FORMAT_U32_LE	((__force snd_pcm_format_t) 12)
  #define	SNDRV_PCM_FORMAT_U32_BE	((__force snd_pcm_format_t) 13)
  #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 */
  #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 */
  #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 */
  #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 */
  #define	SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE ((__force snd_pcm_format_t) 18) /* IEC-958 subframe, Little Endian */
  #define	SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE ((__force snd_pcm_format_t) 19) /* IEC-958 subframe, Big Endian */
  #define	SNDRV_PCM_FORMAT_MU_LAW		((__force snd_pcm_format_t) 20)
  #define	SNDRV_PCM_FORMAT_A_LAW		((__force snd_pcm_format_t) 21)
  #define	SNDRV_PCM_FORMAT_IMA_ADPCM	((__force snd_pcm_format_t) 22)
  #define	SNDRV_PCM_FORMAT_MPEG		((__force snd_pcm_format_t) 23)
  #define	SNDRV_PCM_FORMAT_GSM		((__force snd_pcm_format_t) 24)
  #define	SNDRV_PCM_FORMAT_SPECIAL	((__force snd_pcm_format_t) 31)
  #define	SNDRV_PCM_FORMAT_S24_3LE	((__force snd_pcm_format_t) 32)	/* in three bytes */
  #define	SNDRV_PCM_FORMAT_S24_3BE	((__force snd_pcm_format_t) 33)	/* in three bytes */
  #define	SNDRV_PCM_FORMAT_U24_3LE	((__force snd_pcm_format_t) 34)	/* in three bytes */
  #define	SNDRV_PCM_FORMAT_U24_3BE	((__force snd_pcm_format_t) 35)	/* in three bytes */
  #define	SNDRV_PCM_FORMAT_S20_3LE	((__force snd_pcm_format_t) 36)	/* in three bytes */
  #define	SNDRV_PCM_FORMAT_S20_3BE	((__force snd_pcm_format_t) 37)	/* in three bytes */
  #define	SNDRV_PCM_FORMAT_U20_3LE	((__force snd_pcm_format_t) 38)	/* in three bytes */
  #define	SNDRV_PCM_FORMAT_U20_3BE	((__force snd_pcm_format_t) 39)	/* in three bytes */
  #define	SNDRV_PCM_FORMAT_S18_3LE	((__force snd_pcm_format_t) 40)	/* in three bytes */
  #define	SNDRV_PCM_FORMAT_S18_3BE	((__force snd_pcm_format_t) 41)	/* in three bytes */
  #define	SNDRV_PCM_FORMAT_U18_3LE	((__force snd_pcm_format_t) 42)	/* in three bytes */
  #define	SNDRV_PCM_FORMAT_U18_3BE	((__force snd_pcm_format_t) 43)	/* in three bytes */

  #define	SNDRV_PCM_FORMAT_G723_24	((__force snd_pcm_format_t) 44) /* 8 samples in 3 bytes */
  #define	SNDRV_PCM_FORMAT_G723_24_1B	((__force snd_pcm_format_t) 45) /* 1 sample in 1 byte */
  #define	SNDRV_PCM_FORMAT_G723_40	((__force snd_pcm_format_t) 46) /* 8 Samples in 5 bytes */
  #define	SNDRV_PCM_FORMAT_G723_40_1B	((__force snd_pcm_format_t) 47) /* 1 sample in 1 byte */
  #define	SNDRV_PCM_FORMAT_LAST		SNDRV_PCM_FORMAT_G723_40_1B

  
  #ifdef SNDRV_LITTLE_ENDIAN

  #define	SNDRV_PCM_FORMAT_S16		SNDRV_PCM_FORMAT_S16_LE
  #define	SNDRV_PCM_FORMAT_U16		SNDRV_PCM_FORMAT_U16_LE
  #define	SNDRV_PCM_FORMAT_S24		SNDRV_PCM_FORMAT_S24_LE
  #define	SNDRV_PCM_FORMAT_U24		SNDRV_PCM_FORMAT_U24_LE
  #define	SNDRV_PCM_FORMAT_S32		SNDRV_PCM_FORMAT_S32_LE
  #define	SNDRV_PCM_FORMAT_U32		SNDRV_PCM_FORMAT_U32_LE
  #define	SNDRV_PCM_FORMAT_FLOAT		SNDRV_PCM_FORMAT_FLOAT_LE
  #define	SNDRV_PCM_FORMAT_FLOAT64	SNDRV_PCM_FORMAT_FLOAT64_LE
  #define	SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE

  #endif
  #ifdef SNDRV_BIG_ENDIAN

  #define	SNDRV_PCM_FORMAT_S16		SNDRV_PCM_FORMAT_S16_BE
  #define	SNDRV_PCM_FORMAT_U16		SNDRV_PCM_FORMAT_U16_BE
  #define	SNDRV_PCM_FORMAT_S24		SNDRV_PCM_FORMAT_S24_BE
  #define	SNDRV_PCM_FORMAT_U24		SNDRV_PCM_FORMAT_U24_BE
  #define	SNDRV_PCM_FORMAT_S32		SNDRV_PCM_FORMAT_S32_BE
  #define	SNDRV_PCM_FORMAT_U32		SNDRV_PCM_FORMAT_U32_BE
  #define	SNDRV_PCM_FORMAT_FLOAT		SNDRV_PCM_FORMAT_FLOAT_BE
  #define	SNDRV_PCM_FORMAT_FLOAT64	SNDRV_PCM_FORMAT_FLOAT64_BE
  #define	SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE

  #endif

  typedef int __bitwise snd_pcm_subformat_t;
  #define	SNDRV_PCM_SUBFORMAT_STD		((__force snd_pcm_subformat_t) 0)
  #define	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 */

  #define SNDRV_PCM_INFO_NO_PERIOD_WAKEUP	0x00800000	/* period wakeup can be disabled */

  #define SNDRV_PCM_INFO_FIFO_IN_FRAMES	0x80000000	/* internal kernel flag - FIFO size is in frames */

  typedef int __bitwise snd_pcm_state_t;
  #define	SNDRV_PCM_STATE_OPEN		((__force snd_pcm_state_t) 0) /* stream is open */
  #define	SNDRV_PCM_STATE_SETUP		((__force snd_pcm_state_t) 1) /* stream has a setup */
  #define	SNDRV_PCM_STATE_PREPARED	((__force snd_pcm_state_t) 2) /* stream is ready to start */
  #define	SNDRV_PCM_STATE_RUNNING		((__force snd_pcm_state_t) 3) /* stream is running */
  #define	SNDRV_PCM_STATE_XRUN		((__force snd_pcm_state_t) 4) /* stream reached an xrun */
  #define	SNDRV_PCM_STATE_DRAINING	((__force snd_pcm_state_t) 5) /* stream is draining */
  #define	SNDRV_PCM_STATE_PAUSED		((__force snd_pcm_state_t) 6) /* stream is paused */
  #define	SNDRV_PCM_STATE_SUSPENDED	((__force snd_pcm_state_t) 7) /* hardware is suspended */
  #define	SNDRV_PCM_STATE_DISCONNECTED	((__force snd_pcm_state_t) 8) /* hardware is disconnected */
  #define	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 snd_pcm_sync_id {

  	unsigned char id[16];
  	unsigned short id16[8];
  	unsigned int id32[4];
  };

  struct snd_pcm_info {

  	unsigned int device;		/* RO/WR (control): device number */
  	unsigned int subdevice;		/* RO/WR (control): subdevice number */

  	int stream;			/* RO/WR (control): stream direction */

  	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 */

  	int dev_class;			/* SNDRV_PCM_CLASS_* */
  	int dev_subclass;		/* SNDRV_PCM_SUBCLASS_* */

  	unsigned int subdevices_count;
  	unsigned int subdevices_avail;

  	union snd_pcm_sync_id sync;	/* hardware synchronization ID */

  	unsigned char reserved[64];	/* reserved for future... */
  };

  typedef int snd_pcm_hw_param_t;
  #define	SNDRV_PCM_HW_PARAM_ACCESS	0	/* Access type */
  #define	SNDRV_PCM_HW_PARAM_FORMAT	1	/* Format */
  #define	SNDRV_PCM_HW_PARAM_SUBFORMAT	2	/* Subformat */

  #define	SNDRV_PCM_HW_PARAM_FIRST_MASK	SNDRV_PCM_HW_PARAM_ACCESS
  #define	SNDRV_PCM_HW_PARAM_LAST_MASK	SNDRV_PCM_HW_PARAM_SUBFORMAT

  #define	SNDRV_PCM_HW_PARAM_SAMPLE_BITS	8	/* Bits per sample */
  #define	SNDRV_PCM_HW_PARAM_FRAME_BITS	9	/* Bits per frame */
  #define	SNDRV_PCM_HW_PARAM_CHANNELS	10	/* Channels */
  #define	SNDRV_PCM_HW_PARAM_RATE		11	/* Approx rate */
  #define	SNDRV_PCM_HW_PARAM_PERIOD_TIME	12	/* Approx distance between
  						 * interrupts in us
  						 */
  #define	SNDRV_PCM_HW_PARAM_PERIOD_SIZE	13	/* Approx frames between
  						 * interrupts
  						 */
  #define	SNDRV_PCM_HW_PARAM_PERIOD_BYTES	14	/* Approx bytes between
  						 * interrupts
  						 */
  #define	SNDRV_PCM_HW_PARAM_PERIODS	15	/* Approx interrupts per
  						 * buffer
  						 */
  #define	SNDRV_PCM_HW_PARAM_BUFFER_TIME	16	/* Approx duration of buffer
  						 * in us
  						 */
  #define	SNDRV_PCM_HW_PARAM_BUFFER_SIZE	17	/* Size of buffer in frames */
  #define	SNDRV_PCM_HW_PARAM_BUFFER_BYTES	18	/* Size of buffer in bytes */
  #define	SNDRV_PCM_HW_PARAM_TICK_TIME	19	/* Approx tick duration in us */

  #define	SNDRV_PCM_HW_PARAM_FIRST_INTERVAL	SNDRV_PCM_HW_PARAM_SAMPLE_BITS
  #define	SNDRV_PCM_HW_PARAM_LAST_INTERVAL	SNDRV_PCM_HW_PARAM_TICK_TIME

  #define SNDRV_PCM_HW_PARAMS_NORESAMPLE	(1<<0)	/* avoid rate resampling */

  #define SNDRV_PCM_HW_PARAMS_EXPORT_BUFFER	(1<<1)	/* export buffer */
  #define SNDRV_PCM_HW_PARAMS_NO_PERIOD_WAKEUP	(1<<2)	/* disable period wakeups */

  struct snd_interval {

  	unsigned int min, max;
  	unsigned int openmin:1,
  		     openmax:1,
  		     integer:1,
  		     empty:1;
  };
  
  #define SNDRV_MASK_MAX	256

  struct snd_mask {

  	__u32 bits[(SNDRV_MASK_MAX+31)/32];

  };

  struct snd_pcm_hw_params {

  	unsigned int flags;

  	struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK - 

  			       SNDRV_PCM_HW_PARAM_FIRST_MASK + 1];

  	struct snd_mask mres[5];	/* reserved masks */
  	struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL -

  				        SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];

  	struct snd_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 */

  	snd_pcm_uframes_t fifo_size;	/* R: chip FIFO size in frames */

  	unsigned char reserved[64];	/* reserved for future */
  };

  enum {

  	SNDRV_PCM_TSTAMP_NONE = 0,

  	SNDRV_PCM_TSTAMP_ENABLE,
  	SNDRV_PCM_TSTAMP_LAST = SNDRV_PCM_TSTAMP_ENABLE,

  };

  struct snd_pcm_sw_params {
  	int tstamp_mode;			/* timestamp mode */

  	unsigned int period_step;
  	unsigned int sleep_min;			/* min ticks to sleep */

  	snd_pcm_uframes_t avail_min;		/* min avail frames for wakeup */

  	snd_pcm_uframes_t xfer_align;		/* obsolete: xfer size need to be a multiple */

  	snd_pcm_uframes_t start_threshold;	/* min hw_avail frames for automatic start */
  	snd_pcm_uframes_t stop_threshold;	/* min avail frames for automatic stop */
  	snd_pcm_uframes_t silence_threshold;	/* min distance from noise for silence filling */
  	snd_pcm_uframes_t silence_size;		/* silence block size */
  	snd_pcm_uframes_t boundary;		/* pointers wrap point */

  	unsigned char reserved[64];		/* reserved for future */
  };

  struct snd_pcm_channel_info {

  	unsigned int channel;

  	__kernel_off_t offset;		/* mmap offset */

  	unsigned int first;		/* offset to first sample in bits */
  	unsigned int step;		/* samples distance in bits */
  };

  struct snd_pcm_status {
  	snd_pcm_state_t state;		/* stream state */

  	struct timespec trigger_tstamp;	/* time when stream was started/stopped/paused */
  	struct timespec tstamp;		/* reference timestamp */

  	snd_pcm_uframes_t appl_ptr;	/* appl ptr */
  	snd_pcm_uframes_t hw_ptr;	/* hw ptr */
  	snd_pcm_sframes_t delay;	/* current delay in frames */
  	snd_pcm_uframes_t avail;	/* number of frames available */
  	snd_pcm_uframes_t avail_max;	/* max frames available on hw since last status */
  	snd_pcm_uframes_t overrange;	/* count of ADC (capture) overrange detections from last status */
  	snd_pcm_state_t suspended_state; /* suspended stream state */

  	unsigned char reserved[60];	/* must be filled with zero */
  };

  struct snd_pcm_mmap_status {
  	snd_pcm_state_t state;		/* RO: state - SNDRV_PCM_STATE_XXXX */

  	int pad1;			/* Needed for 64 bit alignment */

  	snd_pcm_uframes_t hw_ptr;	/* RO: hw ptr (0...boundary-1) */

  	struct timespec tstamp;		/* Timestamp */

  	snd_pcm_state_t suspended_state; /* RO: suspended stream state */

  };

  struct snd_pcm_mmap_control {
  	snd_pcm_uframes_t appl_ptr;	/* RW: appl ptr (0...boundary-1) */
  	snd_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 snd_pcm_sync_ptr {

  	unsigned int flags;
  	union {

  		struct snd_pcm_mmap_status status;

  		unsigned char reserved[64];
  	} s;
  	union {

  		struct snd_pcm_mmap_control control;

  		unsigned char reserved[64];
  	} c;
  };

  struct snd_xferi {
  	snd_pcm_sframes_t result;

  	void __user *buf;

  	snd_pcm_uframes_t frames;

  };

  struct snd_xfern {
  	snd_pcm_sframes_t result;

  	void __user * __user *bufs;

  	snd_pcm_uframes_t frames;

  };
  
  enum {

  	SNDRV_PCM_TSTAMP_TYPE_GETTIMEOFDAY = 0,	/* gettimeofday equivalent */
  	SNDRV_PCM_TSTAMP_TYPE_MONOTONIC,	/* posix_clock_monotonic equivalent */
  	SNDRV_PCM_TSTAMP_TYPE_LAST = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC,
  };

  #define SNDRV_PCM_IOCTL_PVERSION	_IOR('A', 0x00, int)
  #define SNDRV_PCM_IOCTL_INFO		_IOR('A', 0x01, struct snd_pcm_info)
  #define SNDRV_PCM_IOCTL_TSTAMP		_IOW('A', 0x02, int)
  #define SNDRV_PCM_IOCTL_TTSTAMP		_IOW('A', 0x03, int)
  #define SNDRV_PCM_IOCTL_HW_REFINE	_IOWR('A', 0x10, struct snd_pcm_hw_params)
  #define SNDRV_PCM_IOCTL_HW_PARAMS	_IOWR('A', 0x11, struct snd_pcm_hw_params)
  #define SNDRV_PCM_IOCTL_HW_FREE		_IO('A', 0x12)
  #define SNDRV_PCM_IOCTL_SW_PARAMS	_IOWR('A', 0x13, struct snd_pcm_sw_params)
  #define SNDRV_PCM_IOCTL_STATUS		_IOR('A', 0x20, struct snd_pcm_status)
  #define SNDRV_PCM_IOCTL_DELAY		_IOR('A', 0x21, snd_pcm_sframes_t)
  #define SNDRV_PCM_IOCTL_HWSYNC		_IO('A', 0x22)
  #define SNDRV_PCM_IOCTL_SYNC_PTR	_IOWR('A', 0x23, struct snd_pcm_sync_ptr)
  #define SNDRV_PCM_IOCTL_CHANNEL_INFO	_IOR('A', 0x32, struct snd_pcm_channel_info)
  #define SNDRV_PCM_IOCTL_PREPARE		_IO('A', 0x40)
  #define SNDRV_PCM_IOCTL_RESET		_IO('A', 0x41)
  #define SNDRV_PCM_IOCTL_START		_IO('A', 0x42)
  #define SNDRV_PCM_IOCTL_DROP		_IO('A', 0x43)
  #define SNDRV_PCM_IOCTL_DRAIN		_IO('A', 0x44)
  #define SNDRV_PCM_IOCTL_PAUSE		_IOW('A', 0x45, int)
  #define SNDRV_PCM_IOCTL_REWIND		_IOW('A', 0x46, snd_pcm_uframes_t)
  #define SNDRV_PCM_IOCTL_RESUME		_IO('A', 0x47)
  #define SNDRV_PCM_IOCTL_XRUN		_IO('A', 0x48)
  #define SNDRV_PCM_IOCTL_FORWARD		_IOW('A', 0x49, snd_pcm_uframes_t)
  #define SNDRV_PCM_IOCTL_WRITEI_FRAMES	_IOW('A', 0x50, struct snd_xferi)
  #define SNDRV_PCM_IOCTL_READI_FRAMES	_IOR('A', 0x51, struct snd_xferi)
  #define SNDRV_PCM_IOCTL_WRITEN_FRAMES	_IOW('A', 0x52, struct snd_xfern)
  #define SNDRV_PCM_IOCTL_READN_FRAMES	_IOR('A', 0x53, struct snd_xfern)
  #define SNDRV_PCM_IOCTL_LINK		_IOW('A', 0x60, int)
  #define SNDRV_PCM_IOCTL_UNLINK		_IO('A', 0x61)

  
  /*****************************************************************************
   *                                                                           *
   *                            MIDI v1.0 interface                            *
   *                                                                           *
   *****************************************************************************/
  
  /*
   *  Raw MIDI section - /dev/snd/midi??
   */
  
  #define SNDRV_RAWMIDI_VERSION		SNDRV_PROTOCOL_VERSION(2, 0, 0)

  enum {

  	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 snd_rawmidi_info {

  	unsigned int device;		/* RO/WR (control): device number */
  	unsigned int subdevice;		/* RO/WR (control): subdevice number */

  	int 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 snd_rawmidi_params {
  	int 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 snd_rawmidi_status {
  	int 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 */
  };

  #define SNDRV_RAWMIDI_IOCTL_PVERSION	_IOR('W', 0x00, int)
  #define SNDRV_RAWMIDI_IOCTL_INFO	_IOR('W', 0x01, struct snd_rawmidi_info)
  #define SNDRV_RAWMIDI_IOCTL_PARAMS	_IOWR('W', 0x10, struct snd_rawmidi_params)
  #define SNDRV_RAWMIDI_IOCTL_STATUS	_IOWR('W', 0x20, struct snd_rawmidi_status)
  #define SNDRV_RAWMIDI_IOCTL_DROP	_IOW('W', 0x30, int)
  #define SNDRV_RAWMIDI_IOCTL_DRAIN	_IOW('W', 0x31, int)

  
  /*
   *  Timer section - /dev/snd/timer
   */

  #define SNDRV_TIMER_VERSION		SNDRV_PROTOCOL_VERSION(2, 0, 6)

  enum {

  	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_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

  #define SNDRV_TIMER_GLOBAL_HRTIMER	3

  
  /* info flags */
  #define SNDRV_TIMER_FLG_SLAVE		(1<<0)	/* cannot be controlled */

  struct snd_timer_id {

  	int dev_class;

  	int dev_sclass;

  	int card;
  	int device;
  	int subdevice;
  };

  struct snd_timer_ginfo {
  	struct snd_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 snd_timer_gparams {
  	struct snd_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 snd_timer_gstatus {
  	struct snd_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 snd_timer_select {
  	struct snd_timer_id id;	/* bind to timer ID */

  	unsigned char reserved[32];	/* reserved */
  };

  struct snd_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 snd_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 snd_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 */
  };

  #define SNDRV_TIMER_IOCTL_PVERSION	_IOR('T', 0x00, int)
  #define SNDRV_TIMER_IOCTL_NEXT_DEVICE	_IOWR('T', 0x01, struct snd_timer_id)
  #define SNDRV_TIMER_IOCTL_TREAD		_IOW('T', 0x02, int)
  #define SNDRV_TIMER_IOCTL_GINFO		_IOWR('T', 0x03, struct snd_timer_ginfo)
  #define SNDRV_TIMER_IOCTL_GPARAMS	_IOW('T', 0x04, struct snd_timer_gparams)
  #define SNDRV_TIMER_IOCTL_GSTATUS	_IOWR('T', 0x05, struct snd_timer_gstatus)
  #define SNDRV_TIMER_IOCTL_SELECT	_IOW('T', 0x10, struct snd_timer_select)
  #define SNDRV_TIMER_IOCTL_INFO		_IOR('T', 0x11, struct snd_timer_info)
  #define SNDRV_TIMER_IOCTL_PARAMS	_IOW('T', 0x12, struct snd_timer_params)
  #define SNDRV_TIMER_IOCTL_STATUS	_IOR('T', 0x14, struct snd_timer_status)
  /* The following four ioctls are changed since 1.0.9 due to confliction */
  #define SNDRV_TIMER_IOCTL_START		_IO('T', 0xa0)
  #define SNDRV_TIMER_IOCTL_STOP		_IO('T', 0xa1)
  #define SNDRV_TIMER_IOCTL_CONTINUE	_IO('T', 0xa2)
  #define SNDRV_TIMER_IOCTL_PAUSE		_IO('T', 0xa3)

  struct snd_timer_read {

  	unsigned int resolution;
  	unsigned int ticks;
  };

  enum {

  	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 snd_timer_tread {
  	int event;

  	struct timespec tstamp;
  	unsigned int val;
  };
  
  /****************************************************************************
   *                                                                          *
   *        Section for driver control interface - /dev/snd/control?          *
   *                                                                          *
   ****************************************************************************/

  #define SNDRV_CTL_VERSION		SNDRV_PROTOCOL_VERSION(2, 0, 7)

  struct snd_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[128];	/* card components / fine identification, delimited with one space (AC97 etc..) */

  };

  typedef int __bitwise snd_ctl_elem_type_t;
  #define	SNDRV_CTL_ELEM_TYPE_NONE	((__force snd_ctl_elem_type_t) 0) /* invalid */
  #define	SNDRV_CTL_ELEM_TYPE_BOOLEAN	((__force snd_ctl_elem_type_t) 1) /* boolean type */
  #define	SNDRV_CTL_ELEM_TYPE_INTEGER	((__force snd_ctl_elem_type_t) 2) /* integer type */
  #define	SNDRV_CTL_ELEM_TYPE_ENUMERATED	((__force snd_ctl_elem_type_t) 3) /* enumerated type */
  #define	SNDRV_CTL_ELEM_TYPE_BYTES	((__force snd_ctl_elem_type_t) 4) /* byte array */
  #define	SNDRV_CTL_ELEM_TYPE_IEC958	((__force snd_ctl_elem_type_t) 5) /* IEC958 (S/PDIF) setup */
  #define	SNDRV_CTL_ELEM_TYPE_INTEGER64	((__force snd_ctl_elem_type_t) 6) /* 64-bit integer type */
  #define	SNDRV_CTL_ELEM_TYPE_LAST	SNDRV_CTL_ELEM_TYPE_INTEGER64
  
  typedef int __bitwise snd_ctl_elem_iface_t;
  #define	SNDRV_CTL_ELEM_IFACE_CARD	((__force snd_ctl_elem_iface_t) 0) /* global control */
  #define	SNDRV_CTL_ELEM_IFACE_HWDEP	((__force snd_ctl_elem_iface_t) 1) /* hardware dependent device */
  #define	SNDRV_CTL_ELEM_IFACE_MIXER	((__force snd_ctl_elem_iface_t) 2) /* virtual mixer device */
  #define	SNDRV_CTL_ELEM_IFACE_PCM	((__force snd_ctl_elem_iface_t) 3) /* PCM device */
  #define	SNDRV_CTL_ELEM_IFACE_RAWMIDI	((__force snd_ctl_elem_iface_t) 4) /* RawMidi device */
  #define	SNDRV_CTL_ELEM_IFACE_TIMER	((__force snd_ctl_elem_iface_t) 5) /* timer device */
  #define	SNDRV_CTL_ELEM_IFACE_SEQUENCER	((__force snd_ctl_elem_iface_t) 6) /* sequencer client */
  #define	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<<3)	/* when was control changed */
  #define SNDRV_CTL_ELEM_ACCESS_TLV_READ		(1<<4)	/* TLV read is possible */
  #define SNDRV_CTL_ELEM_ACCESS_TLV_WRITE		(1<<5)	/* TLV write is possible */
  #define SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE	(SNDRV_CTL_ELEM_ACCESS_TLV_READ|SNDRV_CTL_ELEM_ACCESS_TLV_WRITE)
  #define SNDRV_CTL_ELEM_ACCESS_TLV_COMMAND	(1<<6)	/* TLV command is possible */

  #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_TLV_CALLBACK	(1<<28)	/* kernel use a TLV callback */ 

  #define SNDRV_CTL_ELEM_ACCESS_USER		(1<<29) /* user space element */

  /* bits 30 and 31 are obsoleted (for indirect access) */

  
  /* 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 snd_ctl_elem_id {

  	unsigned int numid;		/* numeric identifier, zero = invalid */

  	snd_ctl_elem_iface_t 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 snd_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 snd_ctl_elem_id __user *pids; /* R: IDs */

  	unsigned char reserved[50];
  };

  struct snd_ctl_elem_info {
  	struct snd_ctl_elem_id id;	/* W: element ID */
  	snd_ctl_elem_type_t 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 */

  	__kernel_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 */

  			__u64 names_ptr;	/* W: names list (ELEM_ADD only) */
  			unsigned int names_length;

  		} enumerated;
  		unsigned char reserved[128];
  	} value;
  	union {
  		unsigned short d[4];		/* dimensions */

  		unsigned short *d_ptr;		/* indirect - obsoleted */

  	} dimen;
  	unsigned char reserved[64-4*sizeof(unsigned short)];
  };

  struct snd_ctl_elem_value {
  	struct snd_ctl_elem_id id;	/* W: element ID */

  	unsigned int indirect: 1;	/* W: indirect access - obsoleted */

  	union {

  		union {
  			long value[128];

  			long *value_ptr;	/* obsoleted */

  		} integer;
  		union {
  			long long value[64];

  			long long *value_ptr;	/* obsoleted */

  		} integer64;
  		union {
  			unsigned int item[128];

  			unsigned int *item_ptr;	/* obsoleted */

  		} enumerated;
  		union {
  			unsigned char data[512];

  			unsigned char *data_ptr;	/* obsoleted */

  		} bytes;

  		struct snd_aes_iec958 iec958;

  	} value;		/* RO */

  	struct timespec tstamp;

  	unsigned char reserved[128-sizeof(struct timespec)];

  };

  struct snd_ctl_tlv {

  	unsigned int numid;	/* control element numeric identification */
  	unsigned int length;	/* in bytes aligned to 4 */
  	unsigned int tlv[0];	/* first TLV */

  };

  #define SNDRV_CTL_IOCTL_PVERSION	_IOR('U', 0x00, int)
  #define SNDRV_CTL_IOCTL_CARD_INFO	_IOR('U', 0x01, struct snd_ctl_card_info)
  #define SNDRV_CTL_IOCTL_ELEM_LIST	_IOWR('U', 0x10, struct snd_ctl_elem_list)
  #define SNDRV_CTL_IOCTL_ELEM_INFO	_IOWR('U', 0x11, struct snd_ctl_elem_info)
  #define SNDRV_CTL_IOCTL_ELEM_READ	_IOWR('U', 0x12, struct snd_ctl_elem_value)
  #define SNDRV_CTL_IOCTL_ELEM_WRITE	_IOWR('U', 0x13, struct snd_ctl_elem_value)
  #define SNDRV_CTL_IOCTL_ELEM_LOCK	_IOW('U', 0x14, struct snd_ctl_elem_id)
  #define SNDRV_CTL_IOCTL_ELEM_UNLOCK	_IOW('U', 0x15, struct snd_ctl_elem_id)
  #define SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS _IOWR('U', 0x16, int)
  #define SNDRV_CTL_IOCTL_ELEM_ADD	_IOWR('U', 0x17, struct snd_ctl_elem_info)
  #define SNDRV_CTL_IOCTL_ELEM_REPLACE	_IOWR('U', 0x18, struct snd_ctl_elem_info)
  #define SNDRV_CTL_IOCTL_ELEM_REMOVE	_IOWR('U', 0x19, struct snd_ctl_elem_id)
  #define SNDRV_CTL_IOCTL_TLV_READ	_IOWR('U', 0x1a, struct snd_ctl_tlv)
  #define SNDRV_CTL_IOCTL_TLV_WRITE	_IOWR('U', 0x1b, struct snd_ctl_tlv)
  #define SNDRV_CTL_IOCTL_TLV_COMMAND	_IOWR('U', 0x1c, struct snd_ctl_tlv)
  #define SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE _IOWR('U', 0x20, int)
  #define SNDRV_CTL_IOCTL_HWDEP_INFO	_IOR('U', 0x21, struct snd_hwdep_info)
  #define SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE	_IOR('U', 0x30, int)
  #define SNDRV_CTL_IOCTL_PCM_INFO	_IOWR('U', 0x31, struct snd_pcm_info)
  #define SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE _IOW('U', 0x32, int)
  #define SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE _IOWR('U', 0x40, int)
  #define SNDRV_CTL_IOCTL_RAWMIDI_INFO	_IOWR('U', 0x41, struct snd_rawmidi_info)
  #define SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE _IOW('U', 0x42, int)
  #define SNDRV_CTL_IOCTL_POWER		_IOWR('U', 0xd0, int)
  #define 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_TLV	(1<<3)	/* element TLV tree was changed */

  #define SNDRV_CTL_EVENT_MASK_REMOVE	(~0U)	/* element was removed */

  struct snd_ctl_event {
  	int type;	/* event type - SNDRV_CTL_EVENT_* */

  	union {
  		struct {
  			unsigned int mask;

  			struct snd_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

  #endif /* __SOUND_ASOUND_H */