kernel-ark/include/asm-arm/rtc.h
Russell King d5aa207e46 [PATCH] ARM: RTC: allow driver methods to return error
Allow RTC drivers to return error codes from their read_time
or read_alarm methods.

Signed-off-by: Russell King <rmk@arm.linux.org.uk>
2005-04-30 12:19:28 +01:00

47 lines
1.3 KiB
C

/*
* linux/include/asm-arm/rtc.h
*
* Copyright (C) 2003 Deep Blue Solutions Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef ASMARM_RTC_H
#define ASMARM_RTC_H
struct module;
struct rtc_ops {
struct module *owner;
int (*open)(void);
void (*release)(void);
int (*ioctl)(unsigned int, unsigned long);
int (*read_time)(struct rtc_time *);
int (*set_time)(struct rtc_time *);
int (*read_alarm)(struct rtc_wkalrm *);
int (*set_alarm)(struct rtc_wkalrm *);
int (*proc)(char *buf);
};
void rtc_time_to_tm(unsigned long, struct rtc_time *);
int rtc_tm_to_time(struct rtc_time *, unsigned long *);
int rtc_valid_tm(struct rtc_time *);
void rtc_next_alarm_time(struct rtc_time *, struct rtc_time *, struct rtc_time *);
void rtc_update(unsigned long, unsigned long);
int register_rtc(struct rtc_ops *);
void unregister_rtc(struct rtc_ops *);
static inline int rtc_periodic_alarm(struct rtc_time *tm)
{
return (tm->tm_year == -1) ||
((unsigned)tm->tm_mon >= 12) ||
((unsigned)(tm->tm_mday - 1) >= 31) ||
((unsigned)tm->tm_hour > 23) ||
((unsigned)tm->tm_min > 59) ||
((unsigned)tm->tm_sec > 59);
}
#endif