forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
69 lines
1.7 KiB
69 lines
1.7 KiB
/* |
|
* 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/intersil.h> |
|
#include <asm/machdep.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) |
|
|
|
/* 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 + 1; |
|
todintersil->day = t->tm_mday; |
|
todintersil->year = (t->tm_year - 68) % 100; |
|
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 - 1; |
|
t->tm_mday = todintersil->day; |
|
t->tm_year = todintersil->year + 68; |
|
t->tm_wday = todintersil->weekday; |
|
if (t->tm_year < 70) |
|
t->tm_year += 100; |
|
} |
|
|
|
intersil_clock->cmd_reg = START_VAL; |
|
|
|
local_irq_restore(flags); |
|
|
|
return 0; |
|
|
|
} |
|
|
|
|