oldlatches.h

基于组件方式开发操作系统的OSKIT源代码

/*
 * linux/include/asm-arm/arch-arc/oldlatches.h
 *
 * Copyright (C) 1996 Russell King, Dave Gilbert
 *
 * Dummy oldlatches.h
 *
 * Modifications:
 *  04-04-1998	PJB/RMK	Merged arc and a5k versions
 */
#ifndef _ASM_ARCH_OLDLATCH_H
#define _ASM_ARCH_OLDLATCH_H

#include <linux/config.h>

#if defined(CONFIG_ARCH_ARC)
#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);

void oldlatch_init(void);

#elif defined(CONFIG_ARCH_A5K)

#ifdef __need_oldlatches
#error "Old latches not present in this (a5k) machine"
#endif

#endif
#endif