sound.h

at91rm9200开发板上音频接口—UDA1380的linux2.4驱动及测试例程

#ifndef _MXLSOUND_H_
#define _MXLSOUND_H_


#define FILE_SAMPLING_FREQ	44100 // in Hz

// Constant declarations used by I2S mode
#define SLOT_BY_FRAME	2
#define BITS_BY_SLOT	16
// IRQ level declaration
#define IRQ_LEVEL_I2S	5	


/*IOCTL COMMANDS */
#define     DAC_OFF             0x10
#define     MONO                0x11
#define     STERO               0x12
#define     LR_MUTE             0x20
#define     LEFT_MUTE	        0x21
#define     RIGHT_MUTE	        0x22
#define	    LEFT_FULL	        0x23
#define	    LEFT_LOW	        0x24
#define     RIGHT_FULL	        0x25
#define	    RIGHT_LOW	        0x26
#define		SOUND_DEC			0x27
#define 	SOUND_INC			0x28
#define 	SOUND_PAUSE			0x29
#define 	SOUND_RESUME		0x30
#define 	SOUND_STOP			0x31
#endif