WAN: HDLC: Detach protocol before unregistering device
[linux/fpc-iii.git] / arch / m68k / sun3x / time.c
blobc8eb08add6b0801cb03718d012657f21cdeded6f
1 /*
2 * linux/arch/m68k/sun3x/time.c
4 * Sun3x-specific time handling
5 */
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>
16 #include <asm/irq.h>
17 #include <asm/io.h>
18 #include <asm/traps.h>
19 #include <asm/sun3x.h>
20 #include <asm/sun3ints.h>
21 #include <asm/rtc.h>
23 #include "time.h"
25 #define M_CONTROL 0xf8
26 #define M_SEC 0xf9
27 #define M_MIN 0xfa
28 #define M_HOUR 0xfb
29 #define M_DAY 0xfc
30 #define M_DATE 0xfd
31 #define M_MONTH 0xfe
32 #define M_YEAR 0xff
34 #define C_WRITE 0x80
35 #define C_READ 0x40
36 #define C_SIGN 0x20
37 #define C_CALIB 0x1f
39 int sun3x_hwclk(int set, struct rtc_time *t)
41 volatile struct mostek_dt *h =
42 (struct mostek_dt *)(SUN3X_EEPROM+M_CONTROL);
43 unsigned long flags;
45 local_irq_save(flags);
47 if(set) {
48 h->csr |= C_WRITE;
49 h->sec = bin2bcd(t->tm_sec);
50 h->min = bin2bcd(t->tm_min);
51 h->hour = bin2bcd(t->tm_hour);
52 h->wday = bin2bcd(t->tm_wday);
53 h->mday = bin2bcd(t->tm_mday);
54 h->month = bin2bcd(t->tm_mon);
55 h->year = bin2bcd(t->tm_year);
56 h->csr &= ~C_WRITE;
57 } else {
58 h->csr |= C_READ;
59 t->tm_sec = bcd2bin(h->sec);
60 t->tm_min = bcd2bin(h->min);
61 t->tm_hour = bcd2bin(h->hour);
62 t->tm_wday = bcd2bin(h->wday);
63 t->tm_mday = bcd2bin(h->mday);
64 t->tm_mon = bcd2bin(h->month);
65 t->tm_year = bcd2bin(h->year);
66 h->csr &= ~C_READ;
69 local_irq_restore(flags);
71 return 0;
73 /* Not much we can do here */
74 u32 sun3x_gettimeoffset(void)
76 return 0L;
79 #if 0
80 static void sun3x_timer_tick(int irq, void *dev_id, struct pt_regs *regs)
82 void (*vector)(int, void *, struct pt_regs *) = dev_id;
84 /* Clear the pending interrupt - pulse the enable line low */
85 disable_irq(5);
86 enable_irq(5);
88 vector(irq, NULL, regs);
90 #endif
92 void __init sun3x_sched_init(irq_handler_t vector)
95 sun3_disable_interrupts();
98 /* Pulse enable low to get the clock started */
99 sun3_disable_irq(5);
100 sun3_enable_irq(5);
101 sun3_enable_interrupts();