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/arch/ppc/amiga/time.c

https://bitbucket.org/evzijst/gittest
C | 58 lines | 42 code | 11 blank | 5 comment | 12 complexity | a145b5cb12ca5289c5427d6e0c13aaa0 MD5 | raw file
 1#include <linux/config.h> /* CONFIG_HEARTBEAT */
 2#include <linux/errno.h>
 3#include <linux/sched.h>
 4#include <linux/kernel.h>
 5#include <linux/param.h>
 6#include <linux/string.h>
 7#include <linux/mm.h>
 8
 9#include <asm/machdep.h>
10#include <asm/io.h>
11
12#include <linux/timex.h>
13
14unsigned long m68k_get_rtc_time(void)
15{
16	unsigned int year, mon, day, hour, min, sec;
17
18	extern void arch_gettod(int *year, int *mon, int *day, int *hour,
19				int *min, int *sec);
20
21	arch_gettod (&year, &mon, &day, &hour, &min, &sec);
22
23	if ((year += 1900) < 1970)
24		year += 100;
25
26	return mktime(year, mon, day, hour, min, sec);
27}
28
29int m68k_set_rtc_time(unsigned long nowtime)
30{
31  if (mach_set_clock_mmss)
32    return mach_set_clock_mmss (nowtime);
33  return -1;
34}
35
36void apus_heartbeat (void)
37{
38#ifdef CONFIG_HEARTBEAT
39	static unsigned cnt = 0, period = 0, dist = 0;
40
41	if (cnt == 0 || cnt == dist)
42                mach_heartbeat( 1 );
43	else if (cnt == 7 || cnt == dist+7)
44                mach_heartbeat( 0 );
45
46	if (++cnt > period) {
47                cnt = 0;
48                /* The hyperbolic function below modifies the heartbeat period
49                 * length in dependency of the current (5min) load. It goes
50                 * through the points f(0)=126, f(1)=86, f(5)=51,
51                 * f(inf)->30. */
52                period = ((672<<FSHIFT)/(5*avenrun[0]+(7<<FSHIFT))) + 30;
53                dist = period / 4;
54	}
55#endif
56	/* should be made smarter */
57	ppc_md.heartbeat_count = 1;
58}