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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [include/] [asm-mips/] [jmr3927/] [ds1742rtc.h] - Blame information for rev 1765

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Line No. Rev Author Line
1 1276 phoenix
/*
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 * ds1742rtc.h - register definitions for the Real-Time-Clock / CMOS RAM
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 *
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 *   Based on include/asm-mips/ds1643rtc.h.
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 *
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 * Copyright (C) 1999-2001 Toshiba Corporation
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 * It was written to be part of the Linux operating system.
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 */
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/* permission is hereby granted to copy, modify and redistribute this code
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 * in terms of the GNU Library General Public License, Version 2 or later,
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 * at your option.
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 */
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#ifndef _DS1742RTC_H
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#define _DS1742RTC_H
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#include <linux/rtc.h>
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#include <asm/mc146818rtc.h>    /* bad name... */
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#define RTC_BRAM_SIZE           0x800
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#define RTC_OFFSET              0x7f8
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/**********************************************************************
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 * register summary
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 **********************************************************************/
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#define RTC_CONTROL             (RTC_OFFSET + 0)
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#define RTC_CENTURY             (RTC_OFFSET + 0)
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#define RTC_SECONDS             (RTC_OFFSET + 1)
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#define RTC_MINUTES             (RTC_OFFSET + 2)
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#define RTC_HOURS               (RTC_OFFSET + 3)
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#define RTC_DAY                 (RTC_OFFSET + 4)
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#define RTC_DATE                (RTC_OFFSET + 5)
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#define RTC_MONTH               (RTC_OFFSET + 6)
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#define RTC_YEAR                (RTC_OFFSET + 7)
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#define RTC_CENTURY_MASK        0x3f
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#define RTC_SECONDS_MASK        0x7f
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#define RTC_DAY_MASK            0x07
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/*
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 * Bits in the Control/Century register
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 */
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#define RTC_WRITE               0x80
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#define RTC_READ                0x40
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/*
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 * Bits in the Seconds register
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 */
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#define RTC_STOP                0x80
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/*
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 * Bits in the Day register
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 */
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#define RTC_BATT_FLAG           0x80
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#define RTC_FREQ_TEST           0x40
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/*
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 * Conversion between binary and BCD.
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 */
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#ifndef BCD_TO_BIN
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#define BCD_TO_BIN(val) ((val)=((val)&15) + ((val)>>4)*10)
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#endif
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#ifndef BIN_TO_BCD
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#define BIN_TO_BCD(val) ((val)=(((val)/10)<<4) + (val)%10)
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#endif
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#endif /* _DS1742RTC_H */

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