mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-29 15:43:59 +08:00
77 lines
1.7 KiB
C
77 lines
1.7 KiB
C
|
/*
|
||
|
|
* arch/m68k/sun3/intersil.c
|
||
|
|
*
|
||
|
|
* basic routines for accessing the intersil clock within the sun3 machines
|
||
|
|
*
|
||
|
|
* started 11/12/1999 Sam Creasey
|
||
|
|
*
|
||
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
||
|
|
* License. See the file COPYING in the main directory of this archive
|
||
|
|
* for more details.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/rtc.h>
|
||
|
|
|
||
|
|
#include <asm/errno.h>
|
||
|
|
#include <asm/system.h>
|
||
|
|
#include <asm/semaphore.h>
|
||
|
|
#include <asm/rtc.h>
|
||
|
|
#include <asm/intersil.h>
|
||
|
|
|
||
|
|
|
||
|
|
/* bits to set for start/run of the intersil */
|
||
|
|
#define STOP_VAL (INTERSIL_STOP | INTERSIL_INT_ENABLE | INTERSIL_24H_MODE)
|
||
|
|
#define START_VAL (INTERSIL_RUN | INTERSIL_INT_ENABLE | INTERSIL_24H_MODE)
|
||
|
|
|
||
|
|
/* does this need to be implemented? */
|
||
|
|
unsigned long sun3_gettimeoffset(void)
|
||
|
|
{
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* get/set hwclock */
|
||
|
|
|
||
|
|
int sun3_hwclk(int set, struct rtc_time *t)
|
||
|
|
{
|
||
|
|
volatile struct intersil_dt *todintersil;
|
||
|
|
unsigned long flags;
|
||
|
|
|
||
|
|
todintersil = (struct intersil_dt *) &intersil_clock->counter;
|
||
|
|
|
||
|
|
local_irq_save(flags);
|
||
|
|
|
||
|
|
intersil_clock->cmd_reg = STOP_VAL;
|
||
|
|
|
||
|
|
/* set or read the clock */
|
||
|
|
if(set) {
|
||
|
|
todintersil->csec = 0;
|
||
|
|
todintersil->hour = t->tm_hour;
|
||
|
|
todintersil->minute = t->tm_min;
|
||
|
|
todintersil->second = t->tm_sec;
|
||
|
|
todintersil->month = t->tm_mon;
|
||
|
|
todintersil->day = t->tm_mday;
|
||
|
|
todintersil->year = t->tm_year - 68;
|
||
|
|
todintersil->weekday = t->tm_wday;
|
||
|
|
} else {
|
||
|
|
/* read clock */
|
||
|
|
t->tm_sec = todintersil->csec;
|
||
|
|
t->tm_hour = todintersil->hour;
|
||
|
|
t->tm_min = todintersil->minute;
|
||
|
|
t->tm_sec = todintersil->second;
|
||
|
|
t->tm_mon = todintersil->month;
|
||
|
|
t->tm_mday = todintersil->day;
|
||
|
|
t->tm_year = todintersil->year + 68;
|
||
|
|
t->tm_wday = todintersil->weekday;
|
||
|
|
}
|
||
|
|
|
||
|
|
intersil_clock->cmd_reg = START_VAL;
|
||
|
|
|
||
|
|
local_irq_restore(flags);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
}
|
||
|
|
|