/* * (C) Copyright 2001 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * SPDX-License-Identifier: GPL-2.0+ */ /* * Generic RTC interface. */ #ifndef _RTC_H_ #define _RTC_H_ /* bcd<->bin functions are needed by almost all the RTC drivers, let's include * it there instead of in evey single driver */ #include <bcd.h> /* * The struct used to pass data from the generic interface code to * the hardware dependend low-level code ande vice versa. Identical * to struct rtc_time used by the Linux kernel. * * Note that there are small but significant differences to the * common "struct time": * * struct time: struct rtc_time: * tm_mon 0 ... 11 1 ... 12 * tm_year years since 1900 years since 0 */ struct rtc_time { int tm_sec; int tm_min; int tm_hour; int tm_mday; int tm_mon; int tm_year; int tm_wday; int tm_yday; int tm_isdst; }; int rtc_get (struct rtc_time *); int rtc_set (struct rtc_time *); void rtc_reset (void); void GregorianDay (struct rtc_time *); void to_tm (int, struct rtc_time *); unsigned long mktime (unsigned int, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int); /** * rtc_read8() - Read an 8-bit register * * @reg: Register to read * @return value read */ int rtc_read8(int reg); /** * rtc_write8() - Write an 8-bit register * * @reg: Register to write * @value: Value to write */ void rtc_write8(int reg, uchar val); /** * rtc_read32() - Read a 32-bit value from the RTC * * @reg: Offset to start reading from * @return value read */ u32 rtc_read32(int reg); /** * rtc_write32() - Write a 32-bit value to the RTC * * @reg: Register to start writing to * @value: Value to write */ void rtc_write32(int reg, u32 value); /** * rtc_init() - Set up the real time clock ready for use */ void rtc_init(void); #endif /* _RTC_H_ */