Commit | Line | Data |
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1da177e4 | 1 | /* |
5ac54964 | 2 | * arch/sh/kernel/time.c |
1da177e4 LT |
3 | * |
4 | * Copyright (C) 1999 Tetsuya Okada & Niibe Yutaka | |
5 | * Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org> | |
42786006 | 6 | * Copyright (C) 2002 - 2009 Paul Mundt |
1da177e4 LT |
7 | * Copyright (C) 2002 M. R. Brown <mrbrown@linux-sh.org> |
8 | * | |
5ac54964 PM |
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. | |
1da177e4 | 12 | */ |
1da177e4 | 13 | #include <linux/kernel.h> |
36ddf31b | 14 | #include <linux/module.h> |
1da177e4 | 15 | #include <linux/init.h> |
1da177e4 | 16 | #include <linux/profile.h> |
65e5d90d PM |
17 | #include <linux/timex.h> |
18 | #include <linux/sched.h> | |
57be2b48 | 19 | #include <linux/clockchips.h> |
eaab8919 | 20 | #include <linux/platform_device.h> |
8c24594d | 21 | #include <linux/smp.h> |
47c8a08b | 22 | #include <linux/rtc.h> |
36ddf31b | 23 | #include <asm/clock.h> |
1da177e4 | 24 | #include <asm/rtc.h> |
36ddf31b | 25 | |
91550f71 PM |
26 | /* Dummy RTC ops */ |
27 | static 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 | ||
33 | static int null_rtc_set_time(const time_t secs) | |
34 | { | |
35 | return 0; | |
36 | } | |
37 | ||
38 | void (*rtc_sh_get_time)(struct timespec *) = null_rtc_get_time; | |
39 | int (*rtc_sh_set_time)(const time_t) = null_rtc_set_time; | |
6d134b9e | 40 | |
d4f587c6 | 41 | void read_persistent_clock(struct timespec *ts) |
6d134b9e | 42 | { |
0ceb4c3e | 43 | rtc_sh_get_time(ts); |
6d134b9e PM |
44 | } |
45 | ||
0272282f | 46 | #ifdef CONFIG_GENERIC_CMOS_UPDATE |
6d134b9e PM |
47 | int update_persistent_clock(struct timespec now) |
48 | { | |
49 | return rtc_sh_set_time(now.tv_sec); | |
50 | } | |
51 | #endif | |
1da177e4 | 52 | |
47c8a08b PM |
53 | unsigned 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 | } | |
64 | EXPORT_SYMBOL(get_rtc_time); | |
65 | ||
66 | int 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 | } | |
73 | EXPORT_SYMBOL(set_rtc_time); | |
74 | ||
42786006 PM |
75 | static 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 | if (IS_ERR(pdev)) | |
84 | return PTR_ERR(pdev); | |
85 | ||
86 | return 0; | |
87 | } | |
88 | module_init(rtc_generic_init); | |
89 | ||
57be2b48 | 90 | void (*board_time_init)(void); |
bd156147 | 91 | |
82b24221 | 92 | static void __init sh_late_time_init(void) |
8e0b8429 | 93 | { |
1d29ebeb PM |
94 | /* |
95 | * Make sure all compiled-in early timers register themselves. | |
6fe32a46 PM |
96 | * |
97 | * Run probe() for two "earlytimer" devices, these will be the | |
98 | * clockevents and clocksource devices respectively. In the event | |
99 | * that only a clockevents device is available, we -ENODEV on the | |
100 | * clocksource and the jiffies clocksource is used transparently | |
101 | * instead. No error handling is necessary here. | |
1d29ebeb PM |
102 | */ |
103 | early_platform_driver_register_all("earlytimer"); | |
6fe32a46 | 104 | early_platform_driver_probe("earlytimer", 2, 0); |
8e0b8429 | 105 | } |
82b24221 | 106 | |
8e0b8429 MD |
107 | void __init time_init(void) |
108 | { | |
109 | if (board_time_init) | |
110 | board_time_init(); | |
111 | ||
112 | clk_init(); | |
113 | ||
82b24221 | 114 | late_time_init = sh_late_time_init; |
8e0b8429 | 115 | } |