Commit | Line | Data |
---|---|---|
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 PM |
40 | |
41 | #ifdef CONFIG_GENERIC_CMOS_UPDATE | |
42 | unsigned long read_persistent_clock(void) | |
43 | { | |
44 | struct timespec tv; | |
45 | rtc_sh_get_time(&tv); | |
46 | return tv.tv_sec; | |
47 | } | |
48 | ||
49 | int update_persistent_clock(struct timespec now) | |
50 | { | |
51 | return rtc_sh_set_time(now.tv_sec); | |
52 | } | |
53 | #endif | |
1da177e4 | 54 | |
47c8a08b PM |
55 | unsigned int get_rtc_time(struct rtc_time *tm) |
56 | { | |
57 | if (rtc_sh_get_time != null_rtc_get_time) { | |
58 | struct timespec tv; | |
59 | ||
60 | rtc_sh_get_time(&tv); | |
61 | rtc_time_to_tm(tv.tv_sec, tm); | |
62 | } | |
63 | ||
64 | return RTC_24H; | |
65 | } | |
66 | EXPORT_SYMBOL(get_rtc_time); | |
67 | ||
68 | int set_rtc_time(struct rtc_time *tm) | |
69 | { | |
70 | unsigned long secs; | |
71 | ||
72 | rtc_tm_to_time(tm, &secs); | |
73 | return rtc_sh_set_time(secs); | |
74 | } | |
75 | EXPORT_SYMBOL(set_rtc_time); | |
76 | ||
42786006 PM |
77 | static int __init rtc_generic_init(void) |
78 | { | |
79 | struct platform_device *pdev; | |
80 | ||
81 | if (rtc_sh_get_time == null_rtc_get_time) | |
82 | return -ENODEV; | |
83 | ||
84 | pdev = platform_device_register_simple("rtc-generic", -1, NULL, 0); | |
85 | if (IS_ERR(pdev)) | |
86 | return PTR_ERR(pdev); | |
87 | ||
88 | return 0; | |
89 | } | |
90 | module_init(rtc_generic_init); | |
91 | ||
57be2b48 | 92 | void (*board_time_init)(void); |
bd156147 | 93 | |
57be2b48 | 94 | unsigned long long sched_clock(void) |
bd156147 | 95 | { |
8be5f1a6 | 96 | return (jiffies_64 - INITIAL_JIFFIES) * (NSEC_PER_SEC / HZ); |
bd156147 | 97 | } |
bd156147 | 98 | |
8e0b8429 | 99 | static void __init sh_late_time_init(void) |
1da177e4 | 100 | { |
eaab8919 MD |
101 | /* |
102 | * Make sure all compiled-in early timers register themselves. | |
103 | * Run probe() for one "earlytimer" device. | |
104 | */ | |
105 | early_platform_driver_register_all("earlytimer"); | |
8be5f1a6 | 106 | early_platform_driver_probe("earlytimer", 1, 0); |
1da177e4 | 107 | } |
8e0b8429 MD |
108 | |
109 | void __init time_init(void) | |
110 | { | |
111 | if (board_time_init) | |
112 | board_time_init(); | |
113 | ||
114 | clk_init(); | |
115 | ||
116 | rtc_sh_get_time(&xtime); | |
117 | set_normalized_timespec(&wall_to_monotonic, | |
118 | -xtime.tv_sec, -xtime.tv_nsec); | |
119 | ||
120 | #ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST | |
121 | local_timer_setup(smp_processor_id()); | |
122 | #endif | |
123 | ||
124 | late_time_init = sh_late_time_init; | |
125 | } |