1/*
  2 *  arch/sh/kernel/time.c
  3 *
  4 *  Copyright (C) 1999  Tetsuya Okada & Niibe Yutaka
  5 *  Copyright (C) 2000  Philipp Rumpf <prumpf@tux.org>
  6 *  Copyright (C) 2002 - 2009  Paul Mundt
  7 *  Copyright (C) 2002  M. R. Brown  <mrbrown@linux-sh.org>
  8 *
  9 * This file is subject to the terms and conditions of the GNU General Public
 10 * License.  See the file "COPYING" in the main directory of this archive
 11 * for more details.
 12 */
 13#include <linux/kernel.h>
 14#include <linux/module.h>
 15#include <linux/init.h>
 16#include <linux/profile.h>
 17#include <linux/timex.h>
 18#include <linux/sched.h>
 19#include <linux/clockchips.h>
 20#include <linux/platform_device.h>
 21#include <linux/smp.h>
 22#include <linux/rtc.h>
 23#include <asm/clock.h>
 24#include <asm/rtc.h>
 25
 26/* Dummy RTC ops */
 27static void null_rtc_get_time(struct timespec *tv)
 28{
 29	tv->tv_sec = mktime(2000, 1, 1, 0, 0, 0);
 30	tv->tv_nsec = 0;
 31}
 32
 33static int null_rtc_set_time(const time_t secs)
 34{
 35	return 0;
 36}
 37
 38void (*rtc_sh_get_time)(struct timespec *) = null_rtc_get_time;
 39int (*rtc_sh_set_time)(const time_t) = null_rtc_set_time;
 40
 41void read_persistent_clock(struct timespec *ts)
 42{
 43	rtc_sh_get_time(ts);
 44}
 45
 46#ifdef CONFIG_GENERIC_CMOS_UPDATE
 47int update_persistent_clock(struct timespec now)
 48{
 49	return rtc_sh_set_time(now.tv_sec);
 50}
 51#endif
 52
 53unsigned int get_rtc_time(struct rtc_time *tm)
 54{
 55	if (rtc_sh_get_time != null_rtc_get_time) {
 56		struct timespec tv;
 57
 58		rtc_sh_get_time(&tv);
 59		rtc_time_to_tm(tv.tv_sec, tm);
 60	}
 61
 62	return RTC_24H;
 63}
 64EXPORT_SYMBOL(get_rtc_time);
 65
 66int set_rtc_time(struct rtc_time *tm)
 67{
 68	unsigned long secs;
 69
 70	rtc_tm_to_time(tm, &secs);
 71	return rtc_sh_set_time(secs);
 72}
 73EXPORT_SYMBOL(set_rtc_time);
 74
 75static int __init rtc_generic_init(void)
 76{
 77	struct platform_device *pdev;
 78
 79	if (rtc_sh_get_time == null_rtc_get_time)
 80		return -ENODEV;
 81
 82	pdev = platform_device_register_simple("rtc-generic", -1, NULL, 0);
 83
 84	return PTR_ERR_OR_ZERO(pdev);
 85}
 86module_init(rtc_generic_init);
 87
 88void (*board_time_init)(void);
 89
 90static void __init sh_late_time_init(void)
 91{
 92	/*
 93	 * Make sure all compiled-in early timers register themselves.
 94	 *
 95	 * Run probe() for two "earlytimer" devices, these will be the
 96	 * clockevents and clocksource devices respectively. In the event
 97	 * that only a clockevents device is available, we -ENODEV on the
 98	 * clocksource and the jiffies clocksource is used transparently
 99	 * instead. No error handling is necessary here.
100	 */
101	early_platform_driver_register_all("earlytimer");
102	early_platform_driver_probe("earlytimer", 2, 0);
103}
104
105void __init time_init(void)
106{
107	if (board_time_init)
108		board_time_init();
109
110	clk_init();
111
112	late_time_init = sh_late_time_init;
113}

 1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 *  arch/sh/kernel/time.c
 4 *
 5 *  Copyright (C) 1999  Tetsuya Okada & Niibe Yutaka
 6 *  Copyright (C) 2000  Philipp Rumpf <prumpf@tux.org>
 7 *  Copyright (C) 2002 - 2009  Paul Mundt
 8 *  Copyright (C) 2002  M. R. Brown  <mrbrown@linux-sh.org>
 
 
 
 
 9 */
10#include <linux/kernel.h>
 
11#include <linux/init.h>
12#include <linux/profile.h>
13#include <linux/timex.h>
14#include <linux/sched.h>
15#include <linux/clockchips.h>
16#include <linux/platform_device.h>
17#include <linux/smp.h>
18#include <linux/rtc.h>
19#include <asm/clock.h>
20#include <asm/rtc.h>
21#include <asm/platform_early.h>
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
22
23static void __init sh_late_time_init(void)
24{
25	/*
26	 * Make sure all compiled-in early timers register themselves.
27	 *
28	 * Run probe() for two "earlytimer" devices, these will be the
29	 * clockevents and clocksource devices respectively. In the event
30	 * that only a clockevents device is available, we -ENODEV on the
31	 * clocksource and the jiffies clocksource is used transparently
32	 * instead. No error handling is necessary here.
33	 */
34	sh_early_platform_driver_register_all("earlytimer");
35	sh_early_platform_driver_probe("earlytimer", 2, 0);
36}
37
38void __init time_init(void)
39{
40	timer_probe();
 
41
42	clk_init();
43
44	late_time_init = sh_late_time_init;
45}