include/asm-mips/mach-dec/mc146818rtc.h

   1 /*
   2  * RTC definitions for DECstation style attached Dallas DS1287 chip.
   3  *
   4  * Copyright (C) 1998, 2001 by Ralf Baechle
   5  * Copyright (C) 1998 by Harald Koerfgen
   6  * Copyright (C) 2002  Maciej W. Rozycki
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * as published by the Free Software Foundation; either version
  11  * 2 of the License, or (at your option) any later version.
  12  */
  13 #ifndef __ASM_MIPS_DEC_RTC_DEC_H
  14 #define __ASM_MIPS_DEC_RTC_DEC_H
  15
  16 #include <linux/types.h>
  17
  18 #include <asm/addrspace.h>
  19
  20 extern volatile u8 *dec_rtc_base;
  21 extern unsigned long dec_kn_slot_size;
  22
  23 #define RTC_PORT(x)     CPHYSADDR(dec_rtc_base)
  24 #define RTC_IO_EXTENT   dec_kn_slot_size
  25 #define RTC_IOMAPPED    0
  26 #undef RTC_IRQ
  27
  28 #define RTC_DEC_YEAR    0x3f    /* Where we store the real year on DECs.  */
  29
  30 #include <linux/mc146818rtc.h>
  31 #include <linux/module.h>
  32 #include <linux/types.h>
  33
  34 static inline unsigned char CMOS_READ(unsigned long addr)
  35 {
  36         return dec_rtc_base[addr * 4];
  37 }
  38
  39 static inline void CMOS_WRITE(unsigned char data, unsigned long addr)
  40 {
  41         dec_rtc_base[addr * 4] = data;
  42 }
  43
  44 #define RTC_ALWAYS_BCD  0
  45
  46 #endif /* __ASM_MIPS_DEC_RTC_DEC_H */