Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
[linux-2.6] / arch / m68k / sun3x / time.c
1 /*
2  *  linux/arch/m68k/sun3x/time.c
3  *
4  *  Sun3x-specific time handling
5  */
6
7 #include <linux/types.h>
8 #include <linux/kd.h>
9 #include <linux/init.h>
10 #include <linux/sched.h>
11 #include <linux/kernel_stat.h>
12 #include <linux/interrupt.h>
13 #include <linux/rtc.h>
14 #include <linux/bcd.h>
15
16 #include <asm/irq.h>
17 #include <asm/io.h>
18 #include <asm/system.h>
19 #include <asm/traps.h>
20 #include <asm/sun3x.h>
21 #include <asm/sun3ints.h>
22 #include <asm/rtc.h>
23
24 #include "time.h"
25
26 #define M_CONTROL 0xf8
27 #define M_SEC     0xf9
28 #define M_MIN     0xfa
29 #define M_HOUR    0xfb
30 #define M_DAY     0xfc
31 #define M_DATE    0xfd
32 #define M_MONTH   0xfe
33 #define M_YEAR    0xff
34
35 #define C_WRITE   0x80
36 #define C_READ    0x40
37 #define C_SIGN    0x20
38 #define C_CALIB   0x1f
39
40 int sun3x_hwclk(int set, struct rtc_time *t)
41 {
42         volatile struct mostek_dt *h =
43                 (struct mostek_dt *)(SUN3X_EEPROM+M_CONTROL);
44         unsigned long flags;
45
46         local_irq_save(flags);
47
48         if(set) {
49                 h->csr |= C_WRITE;
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);
57                 h->csr &= ~C_WRITE;
58         } else {
59                 h->csr |= C_READ;
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);
67                 h->csr &= ~C_READ;
68         }
69
70         local_irq_restore(flags);
71
72         return 0;
73 }
74 /* Not much we can do here */
75 unsigned long sun3x_gettimeoffset (void)
76 {
77     return 0L;
78 }
79
80 #if 0
81 static void sun3x_timer_tick(int irq, void *dev_id, struct pt_regs *regs)
82 {
83     void (*vector)(int, void *, struct pt_regs *) = dev_id;
84
85     /* Clear the pending interrupt - pulse the enable line low */
86     disable_irq(5);
87     enable_irq(5);
88
89     vector(irq, NULL, regs);
90 }
91 #endif
92
93 void __init sun3x_sched_init(irq_handler_t vector)
94 {
95
96         sun3_disable_interrupts();
97
98
99     /* Pulse enable low to get the clock started */
100         sun3_disable_irq(5);
101         sun3_enable_irq(5);
102         sun3_enable_interrupts();
103 }