ev44b0_sound.h

s3c44b0下uclinux下

/*
 * ev44b0_sound.h
 *
 * This is a sound driver for Philips's UDA1341 device.
 *
 * (C) Copyright 2003
 * MICETEK International Inc., Shanghai China
 * Qin Wei <[e-mail]>
 */ 
 
//#define AUDIO_CODEC_CLOCK 256

typedef struct audio_mix {
    unsigned char OGS;          /* output gain switch, 0 for 0db, 1 for 6db*/
    unsigned char IGS;          /* input gain switch, 0 for 0db, 1 for 6db*/
    unsigned char volume;       /* 0~ - db, value range 0 ~ 0x3f*/
    unsigned char BassBoost;    /* 0~ 24db, value range 0 ~ 0xe*/
    unsigned char Treble;       /* 0~ 6db, vaule range 0 ~ 0x3*/
    unsigned char mute;         /* mute on/off ,1 for muste*/
    unsigned char mode;         /* BassBoost and Treble mode,0 ~3*/
    unsigned char EXTADDR;      /* EXT register's address*/
    unsigned char EXTDATA;      /* EXT register's data*/
} audio_mix_t;

/*
 * State structure for one instance
 */

typedef struct  audio_state_s {
	audio_mix_t *mix;

    int used;
	int write_count;
	int read_count;
	int status;	
} audio_state_t;