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- /* $Id: ds1286.h,v 1.1 1998/07/09 20:01:30 ralf Exp $
- *
- * mc146818rtc.h - register definitions for the Real-Time-Clock / CMOS RAM
- * Copyright Torsten Duwe <duwe@informatik.uni-erlangen.de> 1993
- * derived from Data Sheet, Copyright Motorola 1984 (!).
- * It was written to be part of the Linux operating system.
- */
- /* permission is hereby granted to copy, modify and redistribute this code
- * in terms of the GNU Library General Public License, Version 2 or later,
- * at your option.
- */
- #ifndef _MC146818RTC_H
- #define _MC146818RTC_H
-
- #include <asm/mc146818rtc.h>
-
- /**********************************************************************
- * register summary
- **********************************************************************/
- #define RTC_HUNDREDTH_SECOND 0
- #define RTC_SECONDS 1
- #define RTC_MINUTES 2
- #define RTC_MINUTES_ALARM 3
- #define RTC_HOURS 4
- #define RTC_HOURS_ALARM 5
- #define RTC_DAY 6
- #define RTC_DAY_ALARM 7
- #define RTC_DATE 8
- #define RTC_MONTH 9
- #define RTC_YEAR 10
- #define RTC_CMD 11
- #define RTC_WHSEC 12
- #define RTC_WSEC 13
- #define RTC_UNUSED 14
-
- /* RTC_*_alarm is always true if 2 MSBs are set */
- # define RTC_ALARM_DONT_CARE 0xC0
-
-
- /*
- * Bits in the month register
- */
- #define RTC_EOSC 0x80
- #define RTC_ESQW 0x40
-
- /*
- * Bits in the Command register
- */
- #define RTC_TDF 0x01
- #define RTC_WAF 0x02
- #define RTC_TDM 0x04
- #define RTC_WAM 0x08
- #define RTC_PU_LVL 0x10
- #define RTC_IBH_LO 0x20
- #define RTC_IPSW 0x40
- #define RTC_TE 0x80
-
- /*
- * Conversion between binary and BCD.
- */
- #ifndef BCD_TO_BIN
- #define BCD_TO_BIN(val) ((val)=((val)&15) + ((val)>>4)*10)
- #endif
-
- #ifndef BIN_TO_BCD
- #define BIN_TO_BCD(val) ((val)=(((val)/10)<<4) + (val)%10)
- #endif
-
- #endif /* _MC146818RTC_H */
-