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pdaudiocf.h

#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,16)
#include "../../alsa-kernel/pcmcia/pdaudiocf/pdaudiocf.h"
#else

/* old header */

#ifndef __PDAUDIOCF_H
#define __PDAUDIOCF_H

#include <sound/pcm.h>
#include <asm/io.h>
#include <linux/interrupt.h>
#include <pcmcia/cs_types.h>
#include <pcmcia/cs.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/ds.h>

#include <sound/ak4117.h>

/* PDAUDIOCF registers */
#define PDAUDIOCF_REG_MD      0x00  /* music data, R/O */
#define PDAUDIOCF_REG_WDP     0x02  /* write data pointer / 2, R/O */
#define PDAUDIOCF_REG_RDP     0x04  /* read data pointer / 2, R/O */
#define PDAUDIOCF_REG_TCR     0x06  /* test control register W/O */
#define PDAUDIOCF_REG_SCR     0x08  /* status and control, R/W (see bit description) */
#define PDAUDIOCF_REG_ISR     0x0a  /* interrupt status, R/O */
#define PDAUDIOCF_REG_IER     0x0c  /* interrupt enable, R/W */
#define PDAUDIOCF_REG_AK_IFR  0x0e  /* AK interface register, R/W */

/* PDAUDIOCF_REG_TCR */
#define PDAUDIOCF_ELIMAKMBIT  (1<<0)      /* simulate AKM music data */
#define PDAUDIOCF_TESTDATASEL (1<<1)      /* test data selection, 0 = 0x55, 1 = pseudo-random */

/* PDAUDIOCF_REG_SCR */
#define PDAUDIOCF_AK_SBP      (1<<0)      /* serial port busy flag */
#define PDAUDIOCF_RST         (1<<2)      /* FPGA, AKM + SRAM buffer reset */
#define PDAUDIOCF_PDN         (1<<3)      /* power down bit */
#define PDAUDIOCF_CLKDIV0     (1<<4)      /* choose 24.576Mhz clock divided by 1,2,3 or 4 */
#define PDAUDIOCF_CLKDIV1     (1<<5)
#define PDAUDIOCF_RECORD      (1<<6)      /* start capturing to SRAM */
#define PDAUDIOCF_AK_SDD      (1<<7)      /* music data detected */
#define PDAUDIOCF_RED_LED_OFF (1<<8)      /* red LED off override */
#define PDAUDIOCF_BLUE_LED_OFF      (1<<9)      /* blue LED off override */
#define PDAUDIOCF_DATAFMT0    (1<<10)     /* data format bits: 00 = 16-bit, 01 = 18-bit */
#define PDAUDIOCF_DATAFMT1    (1<<11)     /* 10 = 20-bit, 11 = 24-bit, all right justified */
#define PDAUDIOCF_FPGAREV(x)  ((x>>12)&0x0f) /* FPGA revision */

/* PDAUDIOCF_REG_ISR */
#define PDAUDIOCF_IRQLVL      (1<<0)      /* Buffer level IRQ */
#define PDAUDIOCF_IRQOVR      (1<<1)      /* Overrun IRQ */
#define PDAUDIOCF_IRQAKM      (1<<2)      /* AKM IRQ */

/* PDAUDIOCF_REG_IER */
#define PDAUDIOCF_IRQLVLEN0   (1<<0)      /* fill threshold levels; 00 = none, 01 = 1/8th of buffer */
#define PDAUDIOCF_IRQLVLEN1   (1<<1)      /* 10 = 1/4th of buffer, 11 = 1/2th of buffer */
#define PDAUDIOCF_IRQOVREN    (1<<2)      /* enable overrun IRQ */
#define PDAUDIOCF_IRQAKMEN    (1<<3)      /* enable AKM IRQ */
#define PDAUDIOCF_BLUEDUTY0   (1<<8)      /* blue LED duty cycle; 00 = 100%, 01 = 50% */
#define PDAUDIOCF_BLUEDUTY1   (1<<9)      /* 02 = 25%, 11 = 12% */
#define PDAUDIOCF_REDDUTY0    (1<<10)     /* red LED duty cycle; 00 = 100%, 01 = 50% */
#define PDAUDIOCF_REDDUTY1    (1<<11)     /* 02 = 25%, 11 = 12% */
#define PDAUDIOCF_BLUESDD     (1<<12)     /* blue LED against SDD bit */
#define PDAUDIOCF_BLUEMODULATE      (1<<13)     /* save power when 100% duty cycle selected */
#define PDAUDIOCF_REDMODULATE (1<<14)     /* save power when 100% duty cycle selected */
#define PDAUDIOCF_HALFRATE    (1<<15)     /* slow both LED blinks by half (also spdif detect rate) */

/* chip status */
#define PDAUDIOCF_STAT_IS_STALE     (1<<0)
#define PDAUDIOCF_STAT_IS_CONFIGURED (1<<1)
#define PDAUDIOCF_STAT_IS_SUSPENDED (1<<2)

struct snd_pdacf {
      struct snd_card *card;
      int index;

      unsigned long port;
      int irq;

      spinlock_t reg_lock;
      unsigned short regmap[8];
      unsigned short suspend_reg_scr;
      struct tasklet_struct tq;

      spinlock_t ak4117_lock;
      struct ak4117 *ak4117;

      unsigned int chip_status;

      struct snd_pcm *pcm;
      struct snd_pcm_substream *pcm_substream;
      unsigned int pcm_running: 1;
      unsigned int pcm_channels;
      unsigned int pcm_swab;
      unsigned int pcm_little;
      unsigned int pcm_frame;
      unsigned int pcm_sample;
      unsigned int pcm_xor;
      unsigned int pcm_size;
      unsigned int pcm_period;
      unsigned int pcm_tdone;
      unsigned int pcm_hwptr;
      void *pcm_area;
      
      /* pcmcia stuff */
      dev_link_t link;
      dev_node_t node;
};

static inline void pdacf_reg_write(struct snd_pdacf *chip, unsigned char reg, unsigned short val)
{
      outw(chip->regmap[reg>>1] = val, chip->port + reg);
}

static inline unsigned short pdacf_reg_read(struct snd_pdacf *chip, unsigned char reg)
{
      return inw(chip->port + reg);
}

struct snd_pdacf *snd_pdacf_create(struct snd_card *card);
int snd_pdacf_ak4117_create(struct snd_pdacf *pdacf);
void snd_pdacf_powerdown(struct snd_pdacf *chip);
#ifdef CONFIG_PM
int snd_pdacf_suspend(struct snd_pdacf *chip, pm_message_t state);
int snd_pdacf_resume(struct snd_pdacf *chip);
#endif
int snd_pdacf_pcm_new(struct snd_pdacf *chip);
irqreturn_t pdacf_interrupt(int irq, void *dev, struct pt_regs *regs);
void pdacf_tasklet(unsigned long private_data);
void pdacf_reinit(struct snd_pdacf *chip, int resume);

#endif /* __PDAUDIOCF_H */
#endif

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