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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/init.h>
15#include <linux/profile.h>
16#include <linux/timex.h>
17#include <linux/sched.h>
18#include <linux/clockchips.h>
19#include <linux/platform_device.h>
20#include <linux/smp.h>
21#include <linux/rtc.h>
22#include <asm/clock.h>
23#include <asm/rtc.h>
24
25/* Dummy RTC ops */
26static void null_rtc_get_time(struct timespec *tv)
27{
28 tv->tv_sec = mktime(2000, 1, 1, 0, 0, 0);
29 tv->tv_nsec = 0;
30}
31
32static int null_rtc_set_time(const time_t secs)
33{
34 return 0;
35}
36
37void (*rtc_sh_get_time)(struct timespec *) = null_rtc_get_time;
38int (*rtc_sh_set_time)(const time_t) = null_rtc_set_time;
39
40void read_persistent_clock(struct timespec *ts)
41{
42 rtc_sh_get_time(ts);
43}
44
45#ifdef CONFIG_GENERIC_CMOS_UPDATE
46int update_persistent_clock(struct timespec now)
47{
48 return rtc_sh_set_time(now.tv_sec);
49}
50#endif
51
52static int rtc_generic_get_time(struct device *dev, struct rtc_time *tm)
53{
54 struct timespec tv;
55
56 rtc_sh_get_time(&tv);
57 rtc_time_to_tm(tv.tv_sec, tm);
58 return 0;
59}
60
61static int rtc_generic_set_time(struct device *dev, struct rtc_time *tm)
62{
63 unsigned long secs;
64
65 rtc_tm_to_time(tm, &secs);
66 if ((rtc_sh_set_time == null_rtc_set_time) ||
67 (rtc_sh_set_time(secs) < 0))
68 return -EOPNOTSUPP;
69
70 return 0;
71}
72
73static const struct rtc_class_ops rtc_generic_ops = {
74 .read_time = rtc_generic_get_time,
75 .set_time = rtc_generic_set_time,
76};
77
78static int __init rtc_generic_init(void)
79{
80 struct platform_device *pdev;
81
82 if (rtc_sh_get_time == null_rtc_get_time)
83 return -ENODEV;
84
85 pdev = platform_device_register_data(NULL, "rtc-generic", -1,
86 &rtc_generic_ops,
87 sizeof(rtc_generic_ops));
88
89
90 return PTR_ERR_OR_ZERO(pdev);
91}
92device_initcall(rtc_generic_init);
93
94void (*board_time_init)(void);
95
96static void __init sh_late_time_init(void)
97{
98 /*
99 * Make sure all compiled-in early timers register themselves.
100 *
101 * Run probe() for two "earlytimer" devices, these will be the
102 * clockevents and clocksource devices respectively. In the event
103 * that only a clockevents device is available, we -ENODEV on the
104 * clocksource and the jiffies clocksource is used transparently
105 * instead. No error handling is necessary here.
106 */
107 early_platform_driver_register_all("earlytimer");
108 early_platform_driver_probe("earlytimer", 2, 0);
109}
110
111void __init time_init(void)
112{
113 if (board_time_init)
114 board_time_init();
115
116 clk_init();
117
118 late_time_init = sh_late_time_init;
119}
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/hwblk.h>
25#include <asm/rtc.h>
26
27/* Dummy RTC ops */
28static void null_rtc_get_time(struct timespec *tv)
29{
30 tv->tv_sec = mktime(2000, 1, 1, 0, 0, 0);
31 tv->tv_nsec = 0;
32}
33
34static int null_rtc_set_time(const time_t secs)
35{
36 return 0;
37}
38
39void (*rtc_sh_get_time)(struct timespec *) = null_rtc_get_time;
40int (*rtc_sh_set_time)(const time_t) = null_rtc_set_time;
41
42void read_persistent_clock(struct timespec *ts)
43{
44 rtc_sh_get_time(ts);
45}
46
47#ifdef CONFIG_GENERIC_CMOS_UPDATE
48int update_persistent_clock(struct timespec now)
49{
50 return rtc_sh_set_time(now.tv_sec);
51}
52#endif
53
54unsigned int get_rtc_time(struct rtc_time *tm)
55{
56 if (rtc_sh_get_time != null_rtc_get_time) {
57 struct timespec tv;
58
59 rtc_sh_get_time(&tv);
60 rtc_time_to_tm(tv.tv_sec, tm);
61 }
62
63 return RTC_24H;
64}
65EXPORT_SYMBOL(get_rtc_time);
66
67int set_rtc_time(struct rtc_time *tm)
68{
69 unsigned long secs;
70
71 rtc_tm_to_time(tm, &secs);
72 return rtc_sh_set_time(secs);
73}
74EXPORT_SYMBOL(set_rtc_time);
75
76static int __init rtc_generic_init(void)
77{
78 struct platform_device *pdev;
79
80 if (rtc_sh_get_time == null_rtc_get_time)
81 return -ENODEV;
82
83 pdev = platform_device_register_simple("rtc-generic", -1, NULL, 0);
84 if (IS_ERR(pdev))
85 return PTR_ERR(pdev);
86
87 return 0;
88}
89module_init(rtc_generic_init);
90
91void (*board_time_init)(void);
92
93static void __init sh_late_time_init(void)
94{
95 /*
96 * Make sure all compiled-in early timers register themselves.
97 *
98 * Run probe() for two "earlytimer" devices, these will be the
99 * clockevents and clocksource devices respectively. In the event
100 * that only a clockevents device is available, we -ENODEV on the
101 * clocksource and the jiffies clocksource is used transparently
102 * instead. No error handling is necessary here.
103 */
104 early_platform_driver_register_all("earlytimer");
105 early_platform_driver_probe("earlytimer", 2, 0);
106}
107
108void __init time_init(void)
109{
110 if (board_time_init)
111 board_time_init();
112
113 hwblk_init();
114 clk_init();
115
116 late_time_init = sh_late_time_init;
117}