Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

/*

 * Driver for Sound Cors PDAudioCF soundcard

 *

 * Copyright (c) 2003 by Jaroslav Kysela <perex@perex.cz>

 *

 *   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 __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 */

        struct pcmcia_device    *p_dev;

        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);

void pdacf_tasklet(unsigned long private_data);

void pdacf_reinit(struct snd_pdacf *chip, int resume);

#endif /* __PDAUDIOCF_H */