path: root/include/rtc.h (plain)
blob: d11aa8baf91b7370bf40a18f5785522448933386

1	/*
2	* (C) Copyright 2001
3	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4	*
5	* SPDX-License-Identifier: GPL-2.0+
6	*/
7
8	/*
9	* Generic RTC interface.
10	*/
11	#ifndef _RTC_H_
12	#define _RTC_H_
13
14	/* bcd<->bin functions are needed by almost all the RTC drivers, let's include
15	* it there instead of in evey single driver */
16
17	#include <bcd.h>
18
19	/*
20	* The struct used to pass data from the generic interface code to
21	* the hardware dependend low-level code ande vice versa. Identical
22	* to struct rtc_time used by the Linux kernel.
23	*
24	* Note that there are small but significant differences to the
25	* common "struct time":
26	*
27	* struct time: struct rtc_time:
28	* tm_mon 0 ... 11 1 ... 12
29	* tm_year years since 1900 years since 0
30	*/
31
32	struct rtc_time {
33	int tm_sec;
34	int tm_min;
35	int tm_hour;
36	int tm_mday;
37	int tm_mon;
38	int tm_year;
39	int tm_wday;
40	int tm_yday;
41	int tm_isdst;
42	};
43
44	int rtc_get (struct rtc_time *);
45	int rtc_set (struct rtc_time *);
46	void rtc_reset (void);
47
48	void GregorianDay (struct rtc_time *);
49	void to_tm (int, struct rtc_time *);
50	unsigned long mktime (unsigned int, unsigned int, unsigned int,
51	unsigned int, unsigned int, unsigned int);
52
53	/**
54	* rtc_init() - Set up the real time clock ready for use
55	*/
56	void rtc_init(void);
57
58	#endif /* _RTC_H_ */
59