/* * 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/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; }