LXR linux-old/include/asm-mips/ds1286.h

   1/*
   2 * This file is subject to the terms and conditions of the GNU General Public
   3 * License.  See the file "COPYING" in the main directory of this archive
   4 * for more details.
   5 *
   6 * mc146818rtc.h - register definitions for the Real-Time-Clock / CMOS RAM
   7 * Copyright Torsten Duwe <duwe@informatik.uni-erlangen.de> 1993
   8 * derived from Data Sheet, Copyright Motorola 1984 (!).
   9 * It was written to be part of the Linux operating system.
  10 *
  11 * Copyright (C) 1998, 1999 Ralf Baechle
  12 */
  13#ifndef _ASM_DS1286_h
  14#define _ASM_DS1286_h
  15
  16#include <asm/mc146818rtc.h>
  17
  18/**********************************************************************
  19 * register summary
  20 **********************************************************************/
  21#define RTC_HUNDREDTH_SECOND    0
  22#define RTC_SECONDS             1
  23#define RTC_MINUTES             2
  24#define RTC_MINUTES_ALARM       3
  25#define RTC_HOURS               4
  26#define RTC_HOURS_ALARM         5
  27#define RTC_DAY                 6
  28#define RTC_DAY_ALARM           7
  29#define RTC_DATE                8
  30#define RTC_MONTH               9
  31#define RTC_YEAR                10
  32#define RTC_CMD                 11
  33#define RTC_WHSEC               12
  34#define RTC_WSEC                13
  35#define RTC_UNUSED              14
  36
  37/* RTC_*_alarm is always true if 2 MSBs are set */
  38# define RTC_ALARM_DONT_CARE    0xC0
  39
  40
  41/*
  42 * Bits in the month register
  43 */
  44#define RTC_EOSC                0x80
  45#define RTC_ESQW                0x40
  46
  47/*
  48 * Bits in the Command register
  49 */
  50#define RTC_TDF                 0x01
  51#define RTC_WAF                 0x02
  52#define RTC_TDM                 0x04
  53#define RTC_WAM                 0x08
  54#define RTC_PU_LVL              0x10
  55#define RTC_IBH_LO              0x20
  56#define RTC_IPSW                0x40
  57#define RTC_TE                  0x80
  58
  59/*
  60 * Conversion between binary and BCD.
  61 */
  62#ifndef BCD_TO_BIN
  63#define BCD_TO_BIN(val) ((val)=((val)&15) + ((val)>>4)*10)
  64#endif
  65
  66#ifndef BIN_TO_BCD
  67#define BIN_TO_BCD(val) ((val)=(((val)/10)<<4) + (val)%10)
  68#endif
  69
  70#endif /* _ASM_DS1286_h */
  71