1/*
 2 * arch/m68k/sun3/intersil.c
 3 *
 4 * basic routines for accessing the intersil clock within the sun3 machines
 5 *
 6 * started 11/12/1999 Sam Creasey
 7 *
 8 * This file is subject to the terms and conditions of the GNU General Public
 9 * License.  See the file COPYING in the main directory of this archive
10 * for more details.
11 */
12
13#include <linux/kernel.h>
14#include <linux/rtc.h>
15
16#include <asm/errno.h>
17#include <asm/intersil.h>
18#include <asm/machdep.h>
19
20
21/* bits to set for start/run of the intersil */
22#define STOP_VAL (INTERSIL_STOP | INTERSIL_INT_ENABLE | INTERSIL_24H_MODE)
23#define START_VAL (INTERSIL_RUN | INTERSIL_INT_ENABLE | INTERSIL_24H_MODE)
24
25/* get/set hwclock */
26
27int sun3_hwclk(int set, struct rtc_time *t)
28{
29	volatile struct intersil_dt *todintersil;
30	unsigned long flags;
31
32        todintersil = (struct intersil_dt *) &intersil_clock->counter;
33
34	local_irq_save(flags);
35
36	intersil_clock->cmd_reg = STOP_VAL;
37
38	/* set or read the clock */
39	if(set) {
40		todintersil->csec = 0;
41		todintersil->hour = t->tm_hour;
42		todintersil->minute = t->tm_min;
43		todintersil->second = t->tm_sec;
44		todintersil->month = t->tm_mon + 1;
45		todintersil->day = t->tm_mday;
46		todintersil->year = (t->tm_year - 68) % 100;
47		todintersil->weekday = t->tm_wday;
48	} else {
49		/* read clock */
50		t->tm_sec = todintersil->csec;
51		t->tm_hour = todintersil->hour;
52		t->tm_min = todintersil->minute;
53		t->tm_sec = todintersil->second;
54		t->tm_mon = todintersil->month - 1;
55		t->tm_mday = todintersil->day;
56		t->tm_year = todintersil->year + 68;
57		t->tm_wday = todintersil->weekday;
58		if (t->tm_year < 70)
59			t->tm_year += 100;
60	}
61
62	intersil_clock->cmd_reg = START_VAL;
63
64	local_irq_restore(flags);
65
66	return 0;
67
68}
69

 1/*
 2 * arch/m68k/sun3/intersil.c
 3 *
 4 * basic routines for accessing the intersil clock within the sun3 machines
 5 *
 6 * started 11/12/1999 Sam Creasey
 7 *
 8 * This file is subject to the terms and conditions of the GNU General Public
 9 * License.  See the file COPYING in the main directory of this archive
10 * for more details.
11 */
12
13#include <linux/kernel.h>
14#include <linux/rtc.h>
15
16#include <asm/errno.h>
17#include <asm/intersil.h>
18#include <asm/machdep.h>
19
20
21/* bits to set for start/run of the intersil */
22#define STOP_VAL (INTERSIL_STOP | INTERSIL_INT_ENABLE | INTERSIL_24H_MODE)
23#define START_VAL (INTERSIL_RUN | INTERSIL_INT_ENABLE | INTERSIL_24H_MODE)
24
25/* get/set hwclock */
26
27int sun3_hwclk(int set, struct rtc_time *t)
28{
29	volatile struct intersil_dt *todintersil;
30	unsigned long flags;
31
32        todintersil = (struct intersil_dt *) &intersil_clock->counter;
33
34	local_irq_save(flags);
35
36	intersil_clock->cmd_reg = STOP_VAL;
37
38	/* set or read the clock */
39	if(set) {
40		todintersil->csec = 0;
41		todintersil->hour = t->tm_hour;
42		todintersil->minute = t->tm_min;
43		todintersil->second = t->tm_sec;
44		todintersil->month = t->tm_mon + 1;
45		todintersil->day = t->tm_mday;
46		todintersil->year = (t->tm_year - 68) % 100;
47		todintersil->weekday = t->tm_wday;
48	} else {
49		/* read clock */
50		t->tm_sec = todintersil->csec;
51		t->tm_hour = todintersil->hour;
52		t->tm_min = todintersil->minute;
53		t->tm_sec = todintersil->second;
54		t->tm_mon = todintersil->month - 1;
55		t->tm_mday = todintersil->day;
56		t->tm_year = todintersil->year + 68;
57		t->tm_wday = todintersil->weekday;
58		if (t->tm_year < 70)
59			t->tm_year += 100;
60	}
61
62	intersil_clock->cmd_reg = START_VAL;
63
64	local_irq_restore(flags);
65
66	return 0;
67
68}
69