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/*

 * This file is subject to the terms and conditions of the GNU General Public

 * License.  See the file "COPYING" in the main directory of this archive

 * for more details.

 *

 * 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.

 *

 * Copyright (C) 1998, 1999 Ralf Baechle

 */

#ifndef _ASM_DS1286_h

#define _ASM_DS1286_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 /* _ASM_DS1286_h */