Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

#ifndef _dmasound_h_

/*

 *  linux/sound/oss/dmasound/dmasound.h

 *

 *

 *  Minor numbers for the sound driver.

 *

 *  Unfortunately Creative called the codec chip of SB as a DSP. For this

 *  reason the /dev/dsp is reserved for digitized audio use. There is a

 *  device for true DSP processors but it will be called something else.

 *  In v3.0 it's /dev/sndproc but this could be a temporary solution.

 */

#define _dmasound_h_

#include <linux/types.h>

#define SND_NDEVS       256     /* Number of supported devices */

#define SND_DEV_CTL     0        /* Control port /dev/mixer */

#define SND_DEV_SEQ     1       /* Sequencer output /dev/sequencer (FM

                                   synthesizer and MIDI output) */

#define SND_DEV_MIDIN   2       /* Raw midi access */

#define SND_DEV_DSP     3       /* Digitized voice /dev/dsp */

#define SND_DEV_AUDIO   4       /* Sparc compatible /dev/audio */

#define SND_DEV_DSP16   5       /* Like /dev/dsp but 16 bits/sample */

#define SND_DEV_STATUS  6       /* /dev/sndstat */

/* #7 not in use now. Was in 2.4. Free for use after v3.0. */

#define SND_DEV_SEQ2    8       /* /dev/sequencer, level 2 interface */

#define SND_DEV_SNDPROC 9       /* /dev/sndproc for programmable devices */

#define SND_DEV_PSS     SND_DEV_SNDPROC

/* switch on various prinks */

#define DEBUG_DMASOUND 1

#define MAX_AUDIO_DEV   5

#define MAX_MIXER_DEV   4

#define MAX_SYNTH_DEV   3

#define MAX_MIDI_DEV    6

#define MAX_TIMER_DEV   3

#define MAX_CATCH_RADIUS        10

#define le2be16(x)      (((x)<<8 & 0xff00) | ((x)>>8 & 0x00ff))

#define le2be16dbl(x)   (((x)<<8 & 0xff00ff00) | ((x)>>8 & 0x00ff00ff))

#define IOCTL_IN(arg, ret) \

        do { int error = get_user(ret, (int __user *)(arg)); \

                if (error) return error; \

        } while (0)

#define IOCTL_OUT(arg, ret)     ioctl_return((int __user *)(arg), ret)

static inline int ioctl_return(int __user *addr, int value)

{

        return value < 0 ? value : put_user(value, addr);

}

    /*

     *  Configuration

     */

#undef HAS_8BIT_TABLES

#if defined(CONFIG_DMASOUND_ATARI) || defined(CONFIG_DMASOUND_ATARI_MODULE) ||\

    defined(CONFIG_DMASOUND_PAULA) || defined(CONFIG_DMASOUND_PAULA_MODULE) ||\

    defined(CONFIG_DMASOUND_Q40) || defined(CONFIG_DMASOUND_Q40_MODULE)

#define HAS_8BIT_TABLES

#define MIN_BUFFERS     4

#define MIN_BUFSIZE     (1<<12) /* in bytes (- where does this come from ?) */

#define MIN_FRAG_SIZE   8       /* not 100% sure about this */

#define MAX_BUFSIZE     (1<<17) /* Limit for Amiga is 128 kb */

#define MAX_FRAG_SIZE   15      /* allow *4 for mono-8 => stereo-16 (for multi) */

#else /* is pmac and multi is off */

#define MIN_BUFFERS     2

#define MIN_BUFSIZE     (1<<8)  /* in bytes */

#define MIN_FRAG_SIZE   8

#define MAX_BUFSIZE     (1<<18) /* this is somewhat arbitrary for pmac */

#define MAX_FRAG_SIZE   16      /* need to allow *4 for mono-8 => stereo-16 */

#endif

#define DEFAULT_N_BUFFERS 4

#define DEFAULT_BUFF_SIZE (1<<15)

    /*

     *  Initialization

     */

extern int dmasound_init(void);

#ifdef MODULE

extern void dmasound_deinit(void);

#else

#define dmasound_deinit()       do { } while (0)

#endif

/* description of the set-up applies to either hard or soft settings */

typedef struct {

    int format;         /* AFMT_* */

    int stereo;         /* 0 = mono, 1 = stereo */

    int size;           /* 8/16 bit*/

    int speed;          /* speed */

} SETTINGS;

    /*

     *  Machine definitions

     */

typedef struct {

    const char *name;

    const char *name2;

    struct module *owner;

    void *(*dma_alloc)(unsigned int, gfp_t);

    void (*dma_free)(void *, unsigned int);

    int (*irqinit)(void);

#ifdef MODULE

    void (*irqcleanup)(void);

#endif

    void (*init)(void);

    void (*silence)(void);

    int (*setFormat)(int);

    int (*setVolume)(int);

    int (*setBass)(int);

    int (*setTreble)(int);

    int (*setGain)(int);

    void (*play)(void);

    void (*record)(void);               /* optional */

    void (*mixer_init)(void);           /* optional */

    int (*mixer_ioctl)(u_int, u_long);  /* optional */

    int (*write_sq_setup)(void);        /* optional */

    int (*read_sq_setup)(void);         /* optional */

    int (*sq_open)(mode_t);             /* optional */

    int (*state_info)(char *, size_t);  /* optional */

    void (*abort_read)(void);           /* optional */

    int min_dsp_speed;

    int max_dsp_speed;

    int version ;

    int hardware_afmts ;                /* OSS says we only return h'ware info */

                                        /* when queried via SNDCTL_DSP_GETFMTS */

    int capabilities ;          /* low-level reply to SNDCTL_DSP_GETCAPS */

    SETTINGS default_hard ;     /* open() or init() should set something valid */

    SETTINGS default_soft ;     /* you can make it look like old OSS, if you want to */

} MACHINE;

    /*

     *  Low level stuff

     */

typedef struct {

    ssize_t (*ct_ulaw)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t);

    ssize_t (*ct_alaw)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t);

    ssize_t (*ct_s8)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t);

    ssize_t (*ct_u8)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t);

    ssize_t (*ct_s16be)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t);

    ssize_t (*ct_u16be)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t);

    ssize_t (*ct_s16le)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t);

    ssize_t (*ct_u16le)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t);

} TRANS;

struct sound_settings {

    MACHINE mach;       /* machine dependent things */

    SETTINGS hard;      /* hardware settings */

    SETTINGS soft;      /* software settings */

    SETTINGS dsp;       /* /dev/dsp default settings */

    TRANS *trans_write; /* supported translations */

    int volume_left;    /* volume (range is machine dependent) */

    int volume_right;

    int bass;           /* tone (range is machine dependent) */

    int treble;

    int gain;

    int minDev;         /* minor device number currently open */

    spinlock_t lock;

};

extern struct sound_settings dmasound;

#ifdef HAS_8BIT_TABLES

extern char dmasound_ulaw2dma8[];

extern char dmasound_alaw2dma8[];

#endif

    /*

     *  Mid level stuff

     */

static inline int dmasound_set_volume(int volume)

{

        return dmasound.mach.setVolume(volume);

}

static inline int dmasound_set_bass(int bass)

{

        return dmasound.mach.setBass ? dmasound.mach.setBass(bass) : 50;

}

static inline int dmasound_set_treble(int treble)

{

        return dmasound.mach.setTreble ? dmasound.mach.setTreble(treble) : 50;

}

static inline int dmasound_set_gain(int gain)

{

        return dmasound.mach.setGain ? dmasound.mach.setGain(gain) : 100;

}

    /*

     * Sound queue stuff, the heart of the driver

     */

struct sound_queue {

    /* buffers allocated for this queue */

    int numBufs;                /* real limits on what the user can have */

    int bufSize;                /* in bytes */

    char **buffers;

    /* current parameters */

    int locked ;                /* params cannot be modified when != 0 */

    int user_frags ;            /* user requests this many */

    int user_frag_size ;        /* of this size */

    int max_count;              /* actual # fragments <= numBufs */

    int block_size;             /* internal block size in bytes */

    int max_active;             /* in-use fragments <= max_count */

    /* it shouldn't be necessary to declare any of these volatile */

    int front, rear, count;

    int rear_size;

    /*

     *  The use of the playing field depends on the hardware

     *

     *  Atari, PMac: The number of frames that are loaded/playing

     *

     *  Amiga: Bit 0 is set: a frame is loaded

     *         Bit 1 is set: a frame is playing

     */

    int active;

    wait_queue_head_t action_queue, open_queue, sync_queue;

    int open_mode;

    int busy, syncing, xruns, died;

};

#define SLEEP(queue)            interruptible_sleep_on_timeout(&queue, HZ)

#define WAKE_UP(queue)          (wake_up_interruptible(&queue))

extern struct sound_queue dmasound_write_sq;

#define write_sq        dmasound_write_sq

extern int dmasound_catchRadius;

#define catchRadius     dmasound_catchRadius

/* define the value to be put in the byte-swap reg in mac-io

   when we want it to swap for us.

*/

#define BS_VAL 1

#define SW_INPUT_VOLUME_SCALE   4

#define SW_INPUT_VOLUME_DEFAULT (128 / SW_INPUT_VOLUME_SCALE)

extern int expand_read_bal;     /* Balance factor for reading */

extern uint software_input_volume; /* software implemented recording volume! */

#endif /* _dmasound_h_ */