diff options
author | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2021-06-12 14:20:07 +0300 |
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committer | Tom Rini <trini@konsulko.com> | 2021-07-14 23:57:35 +0300 |
commit | e94ef5795231a4e769235c34bca93b394323c55a (patch) | |
tree | 87bc48aa500c6618520ff68b2f96e77d969226d4 /drivers | |
parent | 7c39799dec2cafbe631a35d2c17d080e73741db5 (diff) | |
download | u-boot-e94ef5795231a4e769235c34bca93b394323c55a.tar.xz |
lib: move rtc-lib.c to lib
Function rtc_to_tm() is needed for FAT file system support even if we don't
have a real time clock. So move it from drivers/ to lib/.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/rtc/Makefile | 1 | ||||
-rw-r--r-- | drivers/rtc/rtc-lib.c | 77 |
2 files changed, 0 insertions, 78 deletions
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile index f668cf9050..331a49ab59 100644 --- a/drivers/rtc/Makefile +++ b/drivers/rtc/Makefile @@ -7,7 +7,6 @@ obj-$(CONFIG_$(SPL_TPL_)DM_RTC) += rtc-uclass.o obj-$(CONFIG_RTC_AT91SAM9_RTT) += at91sam9_rtt.o -obj-y += rtc-lib.o obj-$(CONFIG_RTC_ARMADA38X) += armada38x.o obj-$(CONFIG_RTC_DAVINCI) += davinci.o obj-$(CONFIG_RTC_DS1302) += ds1302.o diff --git a/drivers/rtc/rtc-lib.c b/drivers/rtc/rtc-lib.c deleted file mode 100644 index 1f7bdade29..0000000000 --- a/drivers/rtc/rtc-lib.c +++ /dev/null @@ -1,77 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * rtc and date/time utility functions - * - * Copyright (C) 2005-06 Tower Technologies - * Author: Alessandro Zummo <a.zummo@towertech.it> - * - * U-Boot rtc_time differs from Linux rtc_time: - * - The year field takes the actual value, not year - 1900. - * - January is month 1. - */ - -#include <common.h> -#include <rtc.h> -#include <linux/math64.h> - -static const unsigned char rtc_days_in_month[] = { - 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 -}; - -#define LEAPS_THRU_END_OF(y) ((y) / 4 - (y) / 100 + (y) / 400) - -/* - * The number of days in the month. - */ -int rtc_month_days(unsigned int month, unsigned int year) -{ - return rtc_days_in_month[month] + (is_leap_year(year) && month == 1); -} - -/* - * rtc_to_tm - Converts u64 to rtc_time. - * Convert seconds since 01-01-1970 00:00:00 to Gregorian date. - * - * This function is copied from rtc_time64_to_tm() in the Linux kernel. - * But in U-Boot January is month 1 and we do not subtract 1900 from the year. - */ -void rtc_to_tm(u64 time, struct rtc_time *tm) -{ - unsigned int month, year, secs; - int days; - - days = div_u64_rem(time, 86400, &secs); - - /* day of the week, 1970-01-01 was a Thursday */ - tm->tm_wday = (days + 4) % 7; - - year = 1970 + days / 365; - days -= (year - 1970) * 365 - + LEAPS_THRU_END_OF(year - 1) - - LEAPS_THRU_END_OF(1970 - 1); - while (days < 0) { - year -= 1; - days += 365 + is_leap_year(year); - } - tm->tm_year = year; /* Not year - 1900 */ - tm->tm_yday = days + 1; - - for (month = 0; month < 11; month++) { - int newdays; - - newdays = days - rtc_month_days(month, year); - if (newdays < 0) - break; - days = newdays; - } - tm->tm_mon = month + 1; /* January = 1 */ - tm->tm_mday = days + 1; - - tm->tm_hour = secs / 3600; - secs -= tm->tm_hour * 3600; - tm->tm_min = secs / 60; - tm->tm_sec = secs - tm->tm_min * 60; - - /* Zero unused fields */ - tm->tm_isdst = 0; -} |