Subversion Repositories or1k_old

/* Support for the latches on the old Archimedes which control the floppy,

 * hard disc and printer

 *

 * (c) David Alan Gilbert 1995/1996

 */

#include <linux/kernel.h>

#include <asm/io.h>

#include <asm/hardware.h>

#ifdef LATCHAADDR

/*

 * They are static so that everyone who accesses them has to go through here

 */

static unsigned char LatchACopy;

/* newval=(oldval & ~mask)|newdata */

void oldlatch_aupdate(unsigned char mask,unsigned char newdata)

{

    LatchACopy=(LatchACopy & ~mask)|newdata;

    outb(LatchACopy, LATCHAADDR);

#ifdef DEBUG

    printk("oldlatch_A:0x%2x\n",LatchACopy);

#endif

}

#endif

#ifdef LATCHBADDR

static unsigned char LatchBCopy;

/* newval=(oldval & ~mask)|newdata */

void oldlatch_bupdate(unsigned char mask,unsigned char newdata)

{

    LatchBCopy=(LatchBCopy & ~mask)|newdata;

    outb(LatchBCopy, LATCHBADDR);

#ifdef DEBUG

    printk("oldlatch_B:0x%2x\n",LatchBCopy);

#endif

}

#endif

void oldlatch_init(void)

{

    printk("oldlatch: init\n");

#ifdef LATCHAADDR

    oldlatch_aupdate(0xff,0xff);

#endif

#ifdef LATCHBADDR

    oldlatch_bupdate(0xff,0x8); /* Thats no FDC reset...*/

#endif

    return ;

}