| /* 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 functions */ |
| |
| #ifndef __CROS_EC_RTC_H |
| #define __CROS_EC_RTC_H |
| |
| #include "common.h" |
| |
| #define SECS_PER_MINUTE 60 |
| #define SECS_PER_HOUR (60 * SECS_PER_MINUTE) |
| #define SECS_PER_DAY (24 * SECS_PER_HOUR) |
| #define SECS_PER_WEEK (7 * SECS_PER_DAY) |
| #define SECS_PER_YEAR (365 * SECS_PER_DAY) |
| /* The seconds elapsed from 01-01-1970 to 01-01-2000 */ |
| #define SECS_TILL_YEAR_2K (946684800) |
| #define IS_LEAP_YEAR(x) \ |
| (((x) % 4 == 0) && (((x) % 100 != 0) || ((x) % 400 == 0))) |
| |
| struct calendar_date { |
| /* The number of years since A.D. 2000, i.e. year = 17 for y2017 */ |
| uint8_t year; |
| /* 1-based indexing, i.e. valid values range from 1 to 12 */ |
| uint8_t month; |
| /* 1-based indexing, i.e. valid values range from 1 to 31 */ |
| uint8_t day; |
| }; |
| |
| /** |
| * Convert calendar date to seconds elapsed since epoch time. |
| * |
| * @param time The calendar date (years, months, and days). |
| * @return the seconds elapsed since epoch time (01-01-1970 00:00:00). |
| */ |
| uint32_t date_to_sec(struct calendar_date time); |
| |
| /** |
| * Convert seconds elapsed since epoch time to calendar date |
| * |
| * @param sec The seconds elapsed since epoch time (01-01-1970 00:00:00). |
| * @return the calendar date (years, months, and days). |
| */ |
| struct calendar_date sec_to_date(uint32_t sec); |
| |
| #endif /* __CROS_EC_RTC_H */ |