include/asm-arm/rtc.h

   1 /*
   2  *  linux/include/asm-arm/rtc.h
   3  *
   4  *  Copyright (C) 2003 Deep Blue Solutions Ltd.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10 #ifndef ASMARM_RTC_H
  11 #define ASMARM_RTC_H
  12
  13 struct module;
  14
  15 struct rtc_ops {
  16         struct module   *owner;
  17         int             (*open)(void);
  18         void            (*release)(void);
  19         int             (*ioctl)(unsigned int, unsigned long);
  20
  21         void            (*read_time)(struct rtc_time *);
  22         int             (*set_time)(struct rtc_time *);
  23         void            (*read_alarm)(struct rtc_wkalrm *);
  24         int             (*set_alarm)(struct rtc_wkalrm *);
  25         int             (*proc)(char *buf);
  26 };
  27
  28 void rtc_time_to_tm(unsigned long, struct rtc_time *);
  29 int rtc_tm_to_time(struct rtc_time *, unsigned long *);
  30 int rtc_valid_tm(struct rtc_time *);
  31 void rtc_next_alarm_time(struct rtc_time *, struct rtc_time *, struct rtc_time *);
  32 void rtc_update(unsigned long, unsigned long);
  33 int register_rtc(struct rtc_ops *);
  34 void unregister_rtc(struct rtc_ops *);
  35
  36 static inline int rtc_periodic_alarm(struct rtc_time *tm)
  37 {
  38         return  (tm->tm_year == -1) ||
  39                 ((unsigned)tm->tm_mon >= 12) ||
  40                 ((unsigned)(tm->tm_mday - 1) >= 31) ||
  41                 ((unsigned)tm->tm_hour > 23) ||
  42                 ((unsigned)tm->tm_min > 59) ||
  43                 ((unsigned)tm->tm_sec > 59);
  44 }
  45
  46 #endif