48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
/*
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* Generic RTC interface.
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* This version contains the part of the user interface to the Real Time Clock
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* service. It is used with both the legacy mc146818 and also EFI
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* Struct rtc_time and first 12 ioctl by Paul Gortmaker, 1996 - separated out
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* from <linux/mc146818rtc.h> to this file for 2.4 kernels.
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*
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* Copyright (C) 1999 Hewlett-Packard Co.
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* Copyright (C) 1999 Stephane Eranian <eranian@hpl.hp.com>
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*/
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#ifndef _LINUX_RTC_H_
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#define _LINUX_RTC_H_
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#include <common.h>
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#include <linux/types.h>
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extern int rtc_month_days(unsigned int month, unsigned int year);
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extern int rtc_valid_tm(struct rtc_time *tm);
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extern int rtc_tm_to_time(struct rtc_time *tm, unsigned long *time);
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extern void rtc_time_to_tm(unsigned long time, struct rtc_time *tm);
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struct rtc_class_ops;
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struct rtc_device {
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struct device_d *dev;
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struct device_d class_dev;
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struct list_head list;
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const struct rtc_class_ops *ops;
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};
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struct rtc_class_ops {
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int (*read_time)(struct rtc_device *, struct rtc_time *);
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int (*set_time)(struct rtc_device *, struct rtc_time *);
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};
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extern int rtc_register(struct rtc_device *rtcdev);
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extern int rtc_read_time(struct rtc_device *rtc, struct rtc_time *tm);
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extern int rtc_set_time(struct rtc_device *rtc, struct rtc_time *tm);
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static inline bool is_leap_year(unsigned int year)
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{
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return (!(year % 4) && (year % 100)) || !(year % 400);
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}
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#endif /* _LINUX_RTC_H_ */
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