projects / deliverable / linux.git / blame
| 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 | |
| d4f587c6 | 42 | void read_persistent_clock(struct timespec *ts) |
| 6d134b9e | 43 | { |
| 0ceb4c3e | 44 | rtc_sh_get_time(ts); |
| 6d134b9e PM |
45 | } |
| 46 | ||
| 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 | |
| 8e0b8429 MD |
92 | void __init time_init(void) |
| 93 | { | |
| 94 | if (board_time_init) | |
| 95 | board_time_init(); | |
| 96 | ||
| 97 | clk_init(); | |
| 98 | ||
| 99 | rtc_sh_get_time(&xtime); | |
| 100 | set_normalized_timespec(&wall_to_monotonic, | |
| 101 | -xtime.tv_sec, -xtime.tv_nsec); | |
| 102 | ||
| 103 | #ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST | |
| 104 | local_timer_setup(smp_processor_id()); | |
| 105 | #endif | |
| 106 | ||
| 1d29ebeb PM |
107 | /* |
| 108 | * Make sure all compiled-in early timers register themselves. | |
| 6fe32a46 PM |
109 | * |
| 110 | * Run probe() for two "earlytimer" devices, these will be the | |
| 111 | * clockevents and clocksource devices respectively. In the event | |
| 112 | * that only a clockevents device is available, we -ENODEV on the | |
| 113 | * clocksource and the jiffies clocksource is used transparently | |
| 114 | * instead. No error handling is necessary here. | |
| 1d29ebeb PM |
115 | */ |
| 116 | early_platform_driver_register_all("earlytimer"); | |
| 6fe32a46 | 117 | early_platform_driver_probe("earlytimer", 2, 0); |
| 8e0b8429 | 118 | } |