sound/pcmcia/pdaudiocf/pdaudiocf.h

root/sound/pcmcia/pdaudiocf/pdaudiocf.h
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Driver for Sound Cors PDAudioCF soundcard
 *
 * Copyright (c) 2003 by Jaroslav Kysela <perex@perex.cz>
 */

#ifndef __PDAUDIOCF_H
#define __PDAUDIOCF_H

#include <sound/pcm.h>
#include <linux/io.h>
#include <linux/interrupt.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;

        struct mutex reg_lock;
        unsigned short regmap[8];
        unsigned short suspend_reg_scr;

        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 */
        struct pcmcia_device    *p_dev;
};

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);
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);
irqreturn_t pdacf_threaded_irq(int irq, void *dev);
void pdacf_reinit(struct snd_pdacf *chip, int resume);

#endif /* __PDAUDIOCF_H */
Linux
