include/linux/ds1742rtc.h

   1 /*
   2  * ds1742rtc.h - register definitions for the Real-Time-Clock / CMOS RAM
   3  *
   4  * Copyright (C) 1999-2001 Toshiba Corporation
   5  * Copyright (C) 2003 Ralf Baechle (ralf@linux-mips.org)
   6  *
   7  * Permission is hereby granted to copy, modify and redistribute this code
   8  * in terms of the GNU Library General Public License, Version 2 or later,
   9  * at your option.
  10  */
  11 #ifndef __LINUX_DS1742RTC_H
  12 #define __LINUX_DS1742RTC_H
  13
  14 #include <asm/ds1742.h>
  15
  16 #define RTC_BRAM_SIZE           0x800
  17 #define RTC_OFFSET              0x7f8
  18
  19 /*
  20  * Register summary
  21  */
  22 #define RTC_CONTROL             (RTC_OFFSET + 0)
  23 #define RTC_CENTURY             (RTC_OFFSET + 0)
  24 #define RTC_SECONDS             (RTC_OFFSET + 1)
  25 #define RTC_MINUTES             (RTC_OFFSET + 2)
  26 #define RTC_HOURS               (RTC_OFFSET + 3)
  27 #define RTC_DAY                 (RTC_OFFSET + 4)
  28 #define RTC_DATE                (RTC_OFFSET + 5)
  29 #define RTC_MONTH               (RTC_OFFSET + 6)
  30 #define RTC_YEAR                (RTC_OFFSET + 7)
  31
  32 #define RTC_CENTURY_MASK        0x3f
  33 #define RTC_SECONDS_MASK        0x7f
  34 #define RTC_DAY_MASK            0x07
  35
  36 /*
  37  * Bits in the Control/Century register
  38  */
  39 #define RTC_WRITE               0x80
  40 #define RTC_READ                0x40
  41
  42 /*
  43  * Bits in the Seconds register
  44  */
  45 #define RTC_STOP                0x80
  46
  47 /*
  48  * Bits in the Day register
  49  */
  50 #define RTC_BATT_FLAG           0x80
  51 #define RTC_FREQ_TEST           0x40
  52
  53 #endif /* __LINUX_DS1742RTC_H */