122 lines
2.7 KiB
C
122 lines
2.7 KiB
C
|
/*
|
||
|
|
* arch/sh/kernel/time.c
|
||
|
|
*
|
||
|
|
* Copyright (C) 1999 Tetsuya Okada & Niibe Yutaka
|
||
|
|
* Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org>
|
||
|
|
* Copyright (C) 2002 - 2009 Paul Mundt
|
||
|
|
* Copyright (C) 2002 M. R. Brown <mrbrown@linux-sh.org>
|
||
|
|
*
|
||
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
||
|
|
* License. See the file "COPYING" in the main directory of this archive
|
||
|
|
* for more details.
|
||
|
|
*/
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <linux/init.h>
|
||
|
|
#include <linux/profile.h>
|
||
|
|
#include <linux/timex.h>
|
||
|
|
#include <linux/sched.h>
|
||
|
|
#include <linux/clockchips.h>
|
||
|
|
#include <linux/platform_device.h>
|
||
|
|
#include <linux/smp.h>
|
||
|
|
#include <linux/rtc.h>
|
||
|
|
#include <asm/clock.h>
|
||
|
|
#include <asm/hwblk.h>
|
||
|
|
#include <asm/rtc.h>
|
||
|
|
|
||
|
|
/* Dummy RTC ops */
|
||
|
|
static void null_rtc_get_time(struct timespec *tv)
|
||
|
|
{
|
||
|
|
tv->tv_sec = mktime(2000, 1, 1, 0, 0, 0);
|
||
|
|
tv->tv_nsec = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int null_rtc_set_time(const time_t secs)
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void (*rtc_sh_get_time)(struct timespec *) = null_rtc_get_time;
|
||
|
|
int (*rtc_sh_set_time)(const time_t) = null_rtc_set_time;
|
||
|
|
|
||
|
|
#ifdef CONFIG_GENERIC_CMOS_UPDATE
|
||
|
|
void read_persistent_clock(struct timespec *ts)
|
||
|
|
{
|
||
|
|
rtc_sh_get_time(ts);
|
||
|
|
}
|
||
|
|
|
||
|
|
int update_persistent_clock(struct timespec now)
|
||
|
|
{
|
||
|
|
return rtc_sh_set_time(now.tv_sec);
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
unsigned int get_rtc_time(struct rtc_time *tm)
|
||
|
|
{
|
||
|
|
if (rtc_sh_get_time != null_rtc_get_time) {
|
||
|
|
struct timespec tv;
|
||
|
|
|
||
|
|
rtc_sh_get_time(&tv);
|
||
|
|
rtc_time_to_tm(tv.tv_sec, tm);
|
||
|
|
}
|
||
|
|
|
||
|
|
return RTC_24H;
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(get_rtc_time);
|
||
|
|
|
||
|
|
int set_rtc_time(struct rtc_time *tm)
|
||
|
|
{
|
||
|
|
unsigned long secs;
|
||
|
|
|
||
|
|
rtc_tm_to_time(tm, &secs);
|
||
|
|
return rtc_sh_set_time(secs);
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(set_rtc_time);
|
||
|
|
|
||
|
|
static int __init rtc_generic_init(void)
|
||
|
|
{
|
||
|
|
struct platform_device *pdev;
|
||
|
|
|
||
|
|
if (rtc_sh_get_time == null_rtc_get_time)
|
||
|
|
return -ENODEV;
|
||
|
|
|
||
|
|
pdev = platform_device_register_simple("rtc-generic", -1, NULL, 0);
|
||
|
|
if (IS_ERR(pdev))
|
||
|
|
return PTR_ERR(pdev);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
module_init(rtc_generic_init);
|
||
|
|
|
||
|
|
void (*board_time_init)(void);
|
||
|
|
|
||
|
|
static void __init sh_late_time_init(void)
|
||
|
|
{
|
||
|
|
/*
|
||
|
|
* Make sure all compiled-in early timers register themselves.
|
||
|
|
*
|
||
|
|
* Run probe() for two "earlytimer" devices, these will be the
|
||
|
|
* clockevents and clocksource devices respectively. In the event
|
||
|
|
* that only a clockevents device is available, we -ENODEV on the
|
||
|
|
* clocksource and the jiffies clocksource is used transparently
|
||
|
|
* instead. No error handling is necessary here.
|
||
|
|
*/
|
||
|
|
early_platform_driver_register_all("earlytimer");
|
||
|
|
early_platform_driver_probe("earlytimer", 2, 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
void __init time_init(void)
|
||
|
|
{
|
||
|
|
if (board_time_init)
|
||
|
|
board_time_init();
|
||
|
|
|
||
|
|
hwblk_init();
|
||
|
|
clk_init();
|
||
|
|
|
||
|
|
rtc_sh_get_time(&xtime);
|
||
|
|
set_normalized_timespec(&wall_to_monotonic,
|
||
|
|
-xtime.tv_sec, -xtime.tv_nsec);
|
||
|
|
|
||
|
|
late_time_init = sh_late_time_init;
|
||
|
|
}
|