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author | Jiri Kosina <jkosina@suse.cz> | 2011-04-26 10:22:15 +0200 |
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committer | Jiri Kosina <jkosina@suse.cz> | 2011-04-26 10:22:59 +0200 |
commit | 07f9479a40cc778bc1462ada11f95b01360ae4ff (patch) | |
tree | 0676cf38df3844004bb3ebfd99dfa67a4a8998f5 /arch/m68k/kernel/time_no.c | |
parent | 9d5e6bdb3013acfb311ab407eeca0b6a6a3dedbf (diff) | |
parent | cd2e49e90f1cae7726c9a2c54488d881d7f1cd1c (diff) | |
download | linux-07f9479a40cc778bc1462ada11f95b01360ae4ff.tar.gz |
Merge branch 'master' into for-next
Fast-forwarded to current state of Linus' tree as there are patches to be
applied for files that didn't exist on the old branch.
Diffstat (limited to 'arch/m68k/kernel/time_no.c')
-rw-r--r-- | arch/m68k/kernel/time_no.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/arch/m68k/kernel/time_no.c b/arch/m68k/kernel/time_no.c new file mode 100644 index 000000000000..6623909f70e6 --- /dev/null +++ b/arch/m68k/kernel/time_no.c @@ -0,0 +1,87 @@ +/* + * linux/arch/m68knommu/kernel/time.c + * + * Copyright (C) 1991, 1992, 1995 Linus Torvalds + * + * This file contains the m68k-specific time handling details. + * Most of the stuff is located in the machine specific files. + * + * 1997-09-10 Updated NTP code according to technical memorandum Jan '96 + * "A Kernel Model for Precision Timekeeping" by Dave Mills + */ + +#include <linux/errno.h> +#include <linux/module.h> +#include <linux/sched.h> +#include <linux/kernel.h> +#include <linux/param.h> +#include <linux/string.h> +#include <linux/mm.h> +#include <linux/profile.h> +#include <linux/time.h> +#include <linux/timex.h> + +#include <asm/machdep.h> +#include <asm/irq_regs.h> + +#define TICK_SIZE (tick_nsec / 1000) + +static inline int set_rtc_mmss(unsigned long nowtime) +{ + if (mach_set_clock_mmss) + return mach_set_clock_mmss (nowtime); + return -1; +} + +#ifndef CONFIG_GENERIC_CLOCKEVENTS +/* + * timer_interrupt() needs to keep up the real-time clock, + * as well as call the "xtime_update()" routine every clocktick + */ +irqreturn_t arch_timer_interrupt(int irq, void *dummy) +{ + + if (current->pid) + profile_tick(CPU_PROFILING); + + xtime_update(1); + + update_process_times(user_mode(get_irq_regs())); + + return(IRQ_HANDLED); +} +#endif + +static unsigned long read_rtc_mmss(void) +{ + unsigned int year, mon, day, hour, min, sec; + + if (mach_gettod) { + mach_gettod(&year, &mon, &day, &hour, &min, &sec); + if ((year += 1900) < 1970) + year += 100; + } else { + year = 1970; + mon = day = 1; + hour = min = sec = 0; + } + + + return mktime(year, mon, day, hour, min, sec); +} + +void read_persistent_clock(struct timespec *ts) +{ + ts->tv_sec = read_rtc_mmss(); + ts->tv_nsec = 0; +} + +int update_persistent_clock(struct timespec now) +{ + return set_rtc_mmss(now.tv_sec); +} + +void time_init(void) +{ + hw_timer_init(); +} |