#ifndef __SOUND_AK4113_H
  #define __SOUND_AK4113_H
  
  /*
   *  Routines for Asahi Kasei AK4113
   *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>,
   *  Copyright (c) by Pavel Hofman <pavel.hofman@ivitera.com>,
   *
   *
   *   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
   *
   */
  
  /* AK4113 registers */
  /* power down */
  #define AK4113_REG_PWRDN	0x00
  /* format control */
  #define AK4113_REG_FORMAT	0x01
  /* input/output control */
  #define AK4113_REG_IO0		0x02
  /* input/output control */
  #define AK4113_REG_IO1		0x03
  /* interrupt0 mask */
  #define AK4113_REG_INT0_MASK	0x04
  /* interrupt1 mask */
  #define AK4113_REG_INT1_MASK	0x05
  /* DAT mask & DTS select */
  #define AK4113_REG_DATDTS	0x06
  /* receiver status 0 */
  #define AK4113_REG_RCS0		0x07
  /* receiver status 1 */
  #define AK4113_REG_RCS1		0x08
  /* receiver status 2 */
  #define AK4113_REG_RCS2		0x09
  /* RX channel status byte 0 */
  #define AK4113_REG_RXCSB0	0x0a
  /* RX channel status byte 1 */
  #define AK4113_REG_RXCSB1	0x0b
  /* RX channel status byte 2 */
  #define AK4113_REG_RXCSB2	0x0c
  /* RX channel status byte 3 */
  #define AK4113_REG_RXCSB3	0x0d
  /* RX channel status byte 4 */
  #define AK4113_REG_RXCSB4	0x0e
  /* burst preamble Pc byte 0 */
  #define AK4113_REG_Pc0		0x0f
  /* burst preamble Pc byte 1 */
  #define AK4113_REG_Pc1		0x10
  /* burst preamble Pd byte 0 */
  #define AK4113_REG_Pd0		0x11
  /* burst preamble Pd byte 1 */
  #define AK4113_REG_Pd1		0x12
  /* Q-subcode address + control */
  #define AK4113_REG_QSUB_ADDR	0x13
  /* Q-subcode track */
  #define AK4113_REG_QSUB_TRACK	0x14
  /* Q-subcode index */
  #define AK4113_REG_QSUB_INDEX	0x15
  /* Q-subcode minute */
  #define AK4113_REG_QSUB_MINUTE	0x16
  /* Q-subcode second */
  #define AK4113_REG_QSUB_SECOND	0x17
  /* Q-subcode frame */
  #define AK4113_REG_QSUB_FRAME	0x18
  /* Q-subcode zero */
  #define AK4113_REG_QSUB_ZERO	0x19
  /* Q-subcode absolute minute */
  #define AK4113_REG_QSUB_ABSMIN	0x1a
  /* Q-subcode absolute second */
  #define AK4113_REG_QSUB_ABSSEC	0x1b
  /* Q-subcode absolute frame */
  #define AK4113_REG_QSUB_ABSFRM	0x1c
  
  /* sizes */
  #define AK4113_REG_RXCSB_SIZE	((AK4113_REG_RXCSB4-AK4113_REG_RXCSB0)+1)
  #define AK4113_REG_QSUB_SIZE	((AK4113_REG_QSUB_ABSFRM-AK4113_REG_QSUB_ADDR)\
  		+1)
  
  #define AK4113_WRITABLE_REGS	(AK4113_REG_DATDTS + 1)
  
  /* AK4113_REG_PWRDN bits */
  /* Channel Status Select */
  #define AK4113_CS12		(1<<7)
  /* Block Start & C/U Output Mode */
  #define AK4113_BCU		(1<<6)
  /* Master Clock Operation Select */
  #define AK4113_CM1		(1<<5)
  /* Master Clock Operation Select */
  #define AK4113_CM0		(1<<4)
  /* Master Clock Frequency Select */
  #define AK4113_OCKS1		(1<<3)
  /* Master Clock Frequency Select */
  #define AK4113_OCKS0		(1<<2)
  /* 0 = power down, 1 = normal operation */
  #define AK4113_PWN		(1<<1)
  /* 0 = reset & initialize (except thisregister), 1 = normal operation */
  #define AK4113_RST		(1<<0)
  
  /* AK4113_REQ_FORMAT bits */
  /* V/TX Output select: 0 = Validity Flag Output, 1 = TX */
  #define AK4113_VTX		(1<<7)
  /* Audio Data Control */
  #define AK4113_DIF2		(1<<6)
  /* Audio Data Control */
  #define AK4113_DIF1		(1<<5)
  /* Audio Data Control */
  #define AK4113_DIF0		(1<<4)
  /* Deemphasis Autodetect Enable (1 = enable) */
  #define AK4113_DEAU		(1<<3)
  /* 32kHz-48kHz Deemphasis Control */
  #define AK4113_DEM1		(1<<2)
  /* 32kHz-48kHz Deemphasis Control */
  #define AK4113_DEM0		(1<<1)
  #define AK4113_DEM_OFF		(AK4113_DEM0)
  #define AK4113_DEM_44KHZ	(0)
  #define AK4113_DEM_48KHZ	(AK4113_DEM1)
  #define AK4113_DEM_32KHZ	(AK4113_DEM0|AK4113_DEM1)
  /* STDO: 16-bit, right justified */
  #define AK4113_DIF_16R		(0)
  /* STDO: 18-bit, right justified */
  #define AK4113_DIF_18R		(AK4113_DIF0)
  /* STDO: 20-bit, right justified */
  #define AK4113_DIF_20R		(AK4113_DIF1)
  /* STDO: 24-bit, right justified */
  #define AK4113_DIF_24R		(AK4113_DIF1|AK4113_DIF0)
  /* STDO: 24-bit, left justified */
  #define AK4113_DIF_24L		(AK4113_DIF2)
  /* STDO: I2S */
  #define AK4113_DIF_24I2S	(AK4113_DIF2|AK4113_DIF0)
  /* STDO: 24-bit, left justified; LRCLK, BICK = Input */
  #define AK4113_DIF_I24L		(AK4113_DIF2|AK4113_DIF1)
  /* STDO: I2S;  LRCLK, BICK = Input */
  #define AK4113_DIF_I24I2S	(AK4113_DIF2|AK4113_DIF1|AK4113_DIF0)
  
  /* AK4113_REG_IO0 */
  /* XTL1=0,XTL0=0 -> 11.2896Mhz; XTL1=0,XTL0=1 -> 12.288Mhz */
  #define AK4113_XTL1		(1<<6)
  /* XTL1=1,XTL0=0 -> 24.576Mhz; XTL1=1,XTL0=1 -> use channel status */
  #define AK4113_XTL0		(1<<5)
  /* Block Start Signal Output: 0 = U-bit, 1 = C-bit (req. BCU = 1) */
  #define AK4113_UCE		(1<<4)
  /* TX Output Enable (1 = enable) */
  #define AK4113_TXE		(1<<3)
  /* Output Through Data Selector for TX pin */
  #define AK4113_OPS2		(1<<2)
  /* Output Through Data Selector for TX pin */
  #define AK4113_OPS1		(1<<1)
  /* Output Through Data Selector for TX pin */
  #define AK4113_OPS0		(1<<0)
  /* 11.2896 MHz ref. Xtal freq. */
  #define AK4113_XTL_11_2896M	(0)
  /* 12.288 MHz ref. Xtal freq. */
  #define AK4113_XTL_12_288M	(AK4113_XTL0)
  /* 24.576 MHz ref. Xtal freq. */
  #define AK4113_XTL_24_576M	(AK4113_XTL1)
  
  /* AK4113_REG_IO1 */
  /* Interrupt 0 pin Hold */
  #define AK4113_EFH1		(1<<7)
  /* Interrupt 0 pin Hold */
  #define AK4113_EFH0		(1<<6)
  #define AK4113_EFH_512LRCLK	(0)
  #define AK4113_EFH_1024LRCLK	(AK4113_EFH0)
  #define AK4113_EFH_2048LRCLK	(AK4113_EFH1)
  #define AK4113_EFH_4096LRCLK	(AK4113_EFH1|AK4113_EFH0)
  /* PLL Lock Time: 0 = 384/fs, 1 = 1/fs */
  #define AK4113_FAST		(1<<5)
  /* MCKO2 Output Select: 0 = CMx/OCKSx, 1 = Xtal */
  #define AK4113_XMCK		(1<<4)
  /* MCKO2 Output Freq. Select: 0 = x1, 1 = x0.5  (req. XMCK = 1) */
  #define AK4113_DIV		(1<<3)
  /* Input Recovery Data Select */
  #define AK4113_IPS2		(1<<2)
  /* Input Recovery Data Select */
  #define AK4113_IPS1		(1<<1)
  /* Input Recovery Data Select */
  #define AK4113_IPS0		(1<<0)
  #define AK4113_IPS(x)		((x)&7)
  
  /* AK4113_REG_INT0_MASK && AK4113_REG_INT1_MASK*/
  /* mask enable for QINT bit */
  #define AK4113_MQI		(1<<7)
  /* mask enable for AUTO bit */
  #define AK4113_MAUT		(1<<6)
  /* mask enable for CINT bit */
  #define AK4113_MCIT		(1<<5)
  /* mask enable for UNLOCK bit */
  #define AK4113_MULK		(1<<4)
  /* mask enable for V bit */
  #define AK4113_V		(1<<3)
  /* mask enable for STC bit */
  #define AK4113_STC		(1<<2)
  /* mask enable for AUDN bit */
  #define AK4113_MAN		(1<<1)
  /* mask enable for PAR bit */
  #define AK4113_MPR		(1<<0)
  
  /* AK4113_REG_DATDTS */
  /* DAT Start ID Counter */
  #define AK4113_DCNT		(1<<4)
  /* DTS-CD 16-bit Sync Word Detect */
  #define AK4113_DTS16		(1<<3)
  /* DTS-CD 14-bit Sync Word Detect */
  #define AK4113_DTS14		(1<<2)
  /* mask enable for DAT bit (if 1, no INT1 effect */
  #define AK4113_MDAT1		(1<<1)
  /* mask enable for DAT bit (if 1, no INT0 effect */
  #define AK4113_MDAT0		(1<<0)
  
  /* AK4113_REG_RCS0 */
  /* Q-subcode buffer interrupt, 0 = no change, 1 = changed */
  #define AK4113_QINT		(1<<7)
  /* Non-PCM or DTS stream auto detection, 0 = no detect, 1 = detect */
  #define AK4113_AUTO		(1<<6)
  /* channel status buffer interrupt, 0 = no change, 1 = change */
  #define AK4113_CINT		(1<<5)
  /* PLL lock status, 0 = lock, 1 = unlock */
  #define AK4113_UNLCK		(1<<4)
  /* Validity bit, 0 = valid, 1 = invalid */
  #define AK4113_V		(1<<3)
  /* sampling frequency or Pre-emphasis change, 0 = no detect, 1 = detect */
  #define AK4113_STC		(1<<2)
  /* audio bit output, 0 = audio, 1 = non-audio */
  #define AK4113_AUDION		(1<<1)
  /* parity error or biphase error status, 0 = no error, 1 = error */
  #define AK4113_PAR		(1<<0)
  
  /* AK4113_REG_RCS1 */
  /* sampling frequency detection */
  #define AK4113_FS3		(1<<7)
  #define AK4113_FS2		(1<<6)
  #define AK4113_FS1		(1<<5)
  #define AK4113_FS0		(1<<4)
  /* Pre-emphasis detect, 0 = OFF, 1 = ON */
  #define AK4113_PEM		(1<<3)
  /* DAT Start ID Detect, 0 = no detect, 1 = detect */
  #define AK4113_DAT		(1<<2)
  /* DTS-CD bit audio stream detect, 0 = no detect, 1 = detect */
  #define AK4113_DTSCD		(1<<1)
  /* Non-PCM bit stream detection, 0 = no detect, 1 = detect */
  #define AK4113_NPCM		(1<<0)
  #define AK4113_FS_8000HZ	(AK4113_FS3|AK4113_FS0)
  #define AK4113_FS_11025HZ	(AK4113_FS2|AK4113_FS0)
  #define AK4113_FS_16000HZ	(AK4113_FS2|AK4113_FS1|AK4113_FS0)
  #define AK4113_FS_22050HZ	(AK4113_FS2)
  #define AK4113_FS_24000HZ	(AK4113_FS2|AK4113_FS1)
  #define AK4113_FS_32000HZ	(AK4113_FS1|AK4113_FS0)
  #define AK4113_FS_44100HZ	(0)
  #define AK4113_FS_48000HZ	(AK4113_FS1)
  #define AK4113_FS_64000HZ	(AK4113_FS3|AK4113_FS1|AK4113_FS0)
  #define AK4113_FS_88200HZ	(AK4113_FS3)
  #define AK4113_FS_96000HZ	(AK4113_FS3|AK4113_FS1)
  #define AK4113_FS_176400HZ	(AK4113_FS3|AK4113_FS2)
  #define AK4113_FS_192000HZ	(AK4113_FS3|AK4113_FS2|AK4113_FS1)
  
  /* AK4113_REG_RCS2 */
  /* CRC for Q-subcode, 0 = no error, 1 = error */
  #define AK4113_QCRC		(1<<1)
  /* CRC for channel status, 0 = no error, 1 = error */
  #define AK4113_CCRC		(1<<0)
  
  /* flags for snd_ak4113_check_rate_and_errors() */
  #define AK4113_CHECK_NO_STAT	(1<<0)	/* no statistics */
  #define AK4113_CHECK_NO_RATE	(1<<1)	/* no rate check */
  
  #define AK4113_CONTROLS		13
  
  typedef void (ak4113_write_t)(void *private_data, unsigned char addr,
  		unsigned char data);
  typedef unsigned char (ak4113_read_t)(void *private_data, unsigned char addr);
  
  struct ak4113 {
  	struct snd_card *card;
  	ak4113_write_t *write;
  	ak4113_read_t *read;
  	void *private_data;
  	unsigned int init:1;
  	spinlock_t lock;
  	unsigned char regmap[AK4113_WRITABLE_REGS];
  	struct snd_kcontrol *kctls[AK4113_CONTROLS];
  	struct snd_pcm_substream *substream;
  	unsigned long parity_errors;
  	unsigned long v_bit_errors;
  	unsigned long qcrc_errors;
  	unsigned long ccrc_errors;
  	unsigned char rcs0;
  	unsigned char rcs1;
  	unsigned char rcs2;
  	struct delayed_work work;
  	unsigned int check_flags;
  	void *change_callback_private;
  	void (*change_callback)(struct ak4113 *ak4113, unsigned char c0,
  			unsigned char c1);
  };
  
  int snd_ak4113_create(struct snd_card *card, ak4113_read_t *read,
  		ak4113_write_t *write,
  		const unsigned char *pgm,
  		void *private_data, struct ak4113 **r_ak4113);
  void snd_ak4113_reg_write(struct ak4113 *ak4113, unsigned char reg,
  		unsigned char mask, unsigned char val);
  void snd_ak4113_reinit(struct ak4113 *ak4113);
  int snd_ak4113_build(struct ak4113 *ak4113,
  		struct snd_pcm_substream *capture_substream);
  int snd_ak4113_external_rate(struct ak4113 *ak4113);
  int snd_ak4113_check_rate_and_errors(struct ak4113 *ak4113, unsigned int flags);
  
  #endif /* __SOUND_AK4113_H */