[PATCH] Don't export machine_restart, machine_halt, or machine_power_off.
[linux-2.6.git] / arch / m68k / sun3 / intersil.c
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/system.h>
18 #include <asm/semaphore.h>
19 #include <asm/rtc.h>
20 #include <asm/intersil.h>
21
22
23 /* bits to set for start/run of the intersil */
24 #define STOP_VAL (INTERSIL_STOP | INTERSIL_INT_ENABLE | INTERSIL_24H_MODE)
25 #define START_VAL (INTERSIL_RUN | INTERSIL_INT_ENABLE | INTERSIL_24H_MODE)
26
27 /* does this need to be implemented? */
28 unsigned long sun3_gettimeoffset(void)
29 {
30   return 1;
31 }
32
33
34 /* get/set hwclock */
35
36 int sun3_hwclk(int set, struct rtc_time *t)
37 {
38         volatile struct intersil_dt *todintersil;
39         unsigned long flags;
40
41         todintersil = (struct intersil_dt *) &intersil_clock->counter;
42
43         local_irq_save(flags);
44
45         intersil_clock->cmd_reg = STOP_VAL;
46
47         /* set or read the clock */
48         if(set) {
49                 todintersil->csec = 0;
50                 todintersil->hour = t->tm_hour;
51                 todintersil->minute = t->tm_min;
52                 todintersil->second = t->tm_sec;
53                 todintersil->month = t->tm_mon;
54                 todintersil->day = t->tm_mday;
55                 todintersil->year = t->tm_year - 68;
56                 todintersil->weekday = t->tm_wday;
57         } else {
58                 /* read clock */
59                 t->tm_sec = todintersil->csec;
60                 t->tm_hour = todintersil->hour;
61                 t->tm_min = todintersil->minute;
62                 t->tm_sec = todintersil->second;
63                 t->tm_mon = todintersil->month;
64                 t->tm_mday = todintersil->day;
65                 t->tm_year = todintersil->year + 68;
66                 t->tm_wday = todintersil->weekday;
67         }
68
69         intersil_clock->cmd_reg = START_VAL;
70
71         local_irq_restore(flags);
72
73         return 0;
74
75 }
76