1 // SPDX-License-Identifier: GPL-2.0
3 * linux/arch/m68k/sun3x/time.c
5 * Sun3x-specific time handling
8 #include <linux/types.h>
10 #include <linux/init.h>
11 #include <linux/sched.h>
12 #include <linux/kernel_stat.h>
13 #include <linux/interrupt.h>
14 #include <linux/rtc.h>
15 #include <linux/bcd.h>
19 #include <asm/machdep.h>
20 #include <asm/traps.h>
21 #include <asm/sun3x.h>
22 #include <asm/sun3ints.h>
26 #define M_CONTROL 0xf8
40 int sun3x_hwclk(int set, struct rtc_time *t)
42 volatile struct mostek_dt *h =
43 (struct mostek_dt *)(SUN3X_EEPROM+M_CONTROL);
46 local_irq_save(flags);
50 h->sec = bin2bcd(t->tm_sec);
51 h->min = bin2bcd(t->tm_min);
52 h->hour = bin2bcd(t->tm_hour);
53 h->wday = bin2bcd(t->tm_wday);
54 h->mday = bin2bcd(t->tm_mday);
55 h->month = bin2bcd(t->tm_mon);
56 h->year = bin2bcd(t->tm_year);
60 t->tm_sec = bcd2bin(h->sec);
61 t->tm_min = bcd2bin(h->min);
62 t->tm_hour = bcd2bin(h->hour);
63 t->tm_wday = bcd2bin(h->wday);
64 t->tm_mday = bcd2bin(h->mday);
65 t->tm_mon = bcd2bin(h->month);
66 t->tm_year = bcd2bin(h->year);
70 local_irq_restore(flags);
74 /* Not much we can do here */
75 u32 sun3x_gettimeoffset(void)
81 static irqreturn_t sun3x_timer_tick(int irq, void *dev_id)
83 irq_handler_t timer_routine = dev_id;
86 local_irq_save(flags);
87 /* Clear the pending interrupt - pulse the enable line low */
90 timer_routine(0, NULL);
91 local_irq_restore(flags);
97 void __init sun3x_sched_init(irq_handler_t vector)
100 sun3_disable_interrupts();
103 /* Pulse enable low to get the clock started */
106 sun3_enable_interrupts();