83 lines
1.8 KiB
C
83 lines
1.8 KiB
C
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#ifndef _RTC_H_
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#define _RTC_H_
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#include <stdlib.h>
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#include <sunxi_hal_common.h>
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/*
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* The struct used to pass data via the following ioctl. Similar to the
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* struct tm in <time.h>, but it needs to be here so that the kernel
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* source is self contained, allowing cross-compiles, etc. etc.
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*/
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struct rtc_time
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{
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int tm_sec;
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int tm_min;
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int tm_hour;
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int tm_mday;
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int tm_mon;
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int tm_year;
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int tm_wday;
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int tm_yday;
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int tm_isdst;
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};
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typedef s64 time64_t;
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/*
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* This data structure is inspired by the EFI (v0.92) wakeup
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* alarm API.
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*/
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struct rtc_wkalrm
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{
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unsigned char enabled; /* 0 = alarm disabled, 1 = alarm enabled */
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unsigned char pending; /* 0 = alarm not pending, 1 = alarm pending */
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struct rtc_time time; /* time the alarm is set to */
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};
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typedef enum
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{
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RTC_IRQ_ERROR = -3,
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RTC_CLK_ERROR = -2,
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RTC_ERROR = -1,
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RTC_OK = 0,
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}hal_rtc_status_t;
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int rtc_month_days(unsigned int month, unsigned int year);
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int rtc_year_days(unsigned int day, unsigned int month, unsigned int year);
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int rtc_valid_tm(struct rtc_time *tm);
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time64_t rtc_tm_to_time64(struct rtc_time *tm);
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void rtc_time64_to_tm(time64_t time, struct rtc_time *tm);
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/*
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* rtc_tm_sub - Return the difference in seconds.
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*/
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static inline time64_t rtc_tm_sub(struct rtc_time *lhs, struct rtc_time *rhs)
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{
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return rtc_tm_to_time64(lhs) - rtc_tm_to_time64(rhs);
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}
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static inline int 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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/**
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* Deprecated. Use rtc_time64_to_tm().
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*/
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static inline void rtc_time_to_tm(unsigned long time, struct rtc_time *tm)
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{
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rtc_time64_to_tm(time, tm);
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}
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/**
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* Deprecated. Use rtc_tm_to_time64().
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*/
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static inline int rtc_tm_to_time(struct rtc_time *tm, unsigned long *time)
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{
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*time = rtc_tm_to_time64(tm);
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return 0;
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}
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#endif /* _UAPI_LINUX_RTC_H_ */
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