oldlatches.h

arm平台上的uclinux系统全部源代码

#ifndef _ASM_ARM_ARCHARC_OLDLATCH_H
#define _ASM_ARM_ARCHARC_OLDLATCH_H

#define LATCHA_FDSEL0    (1<<0)
#define LATCHA_FDSEL1    (1<<1)
#define LATCHA_FDSEL2    (1<<2)
#define LATCHA_FDSEL3    (1<<3)
#define LATCHA_FDSELALL  (0xf)
#define LATCHA_SIDESEL   (1<<4)
#define LATCHA_MOTOR     (1<<5)
#define LATCHA_INUSE     (1<<6)
#define LATCHA_CHANGERST (1<<7)

#define LATCHB_FDCDENSITY  (1<<1)
#define LATCHB_FDCRESET    (1<<3)
#define LATCHB_PRINTSTROBE (1<<4)

/* newval=(oldval & mask)|newdata */
void oldlatch_bupdate(unsigned char mask,unsigned char newdata);

/* newval=(oldval & mask)|newdata */
void oldlatch_aupdate(unsigned char mask,unsigned char newdata);

#endif