include/rtc.h

   1 /*
   2  * (C) Copyright 2001
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 /*
  25  * Generic RTC interface.
  26  */
  27 #ifndef _RTC_H_
  28 #define _RTC_H_
  29
  30 /* bcd<->bin functions are needed by almost all the RTC drivers, let's include
  31  * it there instead of in evey single driver */
  32
  33 #include <bcd.h>
  34
  35 /*
  36  * The struct used to pass data from the generic interface code to
  37  * the hardware dependend low-level code ande vice versa. Identical
  38  * to struct rtc_time used by the Linux kernel.
  39  *
  40  * Note that there are small but significant differences to the
  41  * common "struct time":
  42  *
  43  *              struct time:            struct rtc_time:
  44  * tm_mon       0 ... 11                1 ... 12
  45  * tm_year      years since 1900        years since 0
  46  */
  47
  48 struct rtc_time {
  49         int tm_sec;
  50         int tm_min;
  51         int tm_hour;
  52         int tm_mday;
  53         int tm_mon;
  54         int tm_year;
  55         int tm_wday;
  56         int tm_yday;
  57         int tm_isdst;
  58 };
  59
  60 int rtc_get (struct rtc_time *);
  61 int rtc_set (struct rtc_time *);
  62 void rtc_reset (void);
  63
  64 void GregorianDay (struct rtc_time *);
  65 void to_tm (int, struct rtc_time *);
  66 unsigned long mktime (unsigned int, unsigned int, unsigned int,
  67                       unsigned int, unsigned int, unsigned int);
  68
  69 #endif  /* _RTC_H_ */