diff options
Diffstat (limited to 'common/rtc.c')
-rw-r--r-- | common/rtc.c | 68 |
1 files changed, 0 insertions, 68 deletions
diff --git a/common/rtc.c b/common/rtc.c deleted file mode 100644 index 670e86d707..0000000000 --- a/common/rtc.c +++ /dev/null @@ -1,68 +0,0 @@ -/* Copyright 2017 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -/* RTC cross-platform code for Chrome EC */ -/* TODO(chromium:733844): Move this conversion to kernel rtc-cros-ec driver */ - -#include "rtc.h" - -static uint16_t days_since_year_start[12] = { - 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 -}; - -/* Conversion between calendar date and seconds eclapsed since 1970-01-01 */ -uint32_t date_to_sec(struct calendar_date time) -{ - int i; - uint32_t sec; - - sec = time.year * SECS_PER_YEAR; - for (i = 0; i < time.year; i++) { - if (IS_LEAP_YEAR(i)) - sec += SECS_PER_DAY; - } - - sec += (days_since_year_start[time.month - 1] + - (IS_LEAP_YEAR(time.year) && time.month > 2) + - (time.day - 1)) * SECS_PER_DAY; - - /* add the accumulated time in seconds from 1970 to 2000 */ - return sec + SECS_TILL_YEAR_2K; -} - -struct calendar_date sec_to_date(uint32_t sec) -{ - struct calendar_date time; - int day_tmp; /* for intermediate calculation */ - int i; - - /* RTC time must be after year 2000. */ - sec = (sec > SECS_TILL_YEAR_2K) ? (sec - SECS_TILL_YEAR_2K) : 0; - - day_tmp = sec / SECS_PER_DAY; - time.year = day_tmp / 365; - day_tmp %= 365; - for (i = 0; i < time.year; i++) { - if (IS_LEAP_YEAR(i)) - day_tmp -= 1; - } - day_tmp++; - if (day_tmp <= 0) { - time.year -= 1; - day_tmp += IS_LEAP_YEAR(time.year) ? 366 : 365; - } - for (i = 1; i < 12; i++) { - if (days_since_year_start[i] + - (IS_LEAP_YEAR(time.year) && (i >= 2)) >= day_tmp) - break; - } - time.month = i; - - day_tmp -= days_since_year_start[time.month - 1] + - (IS_LEAP_YEAR(time.year) && (time.month > 2)); - time.day = day_tmp; - - return time; -} |