arch/mips/include/asm/mach-ip32/mc146818rtc.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  * Copyright (C) 1998, 2001, 03 by Ralf Baechle
   7  * Copyright (C) 2000 Harald Koerfgen
   8  *
   9  * RTC routines for IP32 style attached Dallas chip.
  10  */
  11 #ifndef __ASM_MACH_IP32_MC146818RTC_H
  12 #define __ASM_MACH_IP32_MC146818RTC_H
  13
  14 #include <asm/ip32/mace.h>
  15
  16 #define RTC_PORT(x)     (0x70 + (x))
  17
  18 static unsigned char CMOS_READ(unsigned long addr)
  19 {
  20         return mace->isa.rtc[addr << 8];
  21 }
  22
  23 static inline void CMOS_WRITE(unsigned char data, unsigned long addr)
  24 {
  25         mace->isa.rtc[addr << 8] = data;
  26 }
  27
  28 /*
  29  * FIXME: Do it right. For now just assume that no one lives in 20th century
  30  * and no O2 user in 22th century ;-)
  31  */
  32 #define mc146818_decode_year(year) ((year) + 2000)
  33
  34 #define RTC_ALWAYS_BCD  0
  35
  36 #endif /* __ASM_MACH_IP32_MC146818RTC_H */