include/asm-mips/mach-jazz/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  *
   8  * RTC routines for Jazz style attached Dallas chip.
   9  */
  10 #ifndef __ASM_MACH_JAZZ_MC146818RTC_H
  11 #define __ASM_MACH_JAZZ_MC146818RTC_H
  12
  13 #include <asm/io.h>
  14 #include <asm/jazz.h>
  15
  16 #define RTC_PORT(x)     (0x70 + (x))
  17 #define RTC_IRQ         8
  18
  19 static inline unsigned char CMOS_READ(unsigned long addr)
  20 {
  21         outb_p(addr, RTC_PORT(0));
  22
  23         return *(char *)JAZZ_RTC_BASE;
  24 }
  25
  26 static inline void CMOS_WRITE(unsigned char data, unsigned long addr)
  27 {
  28         outb_p(addr, RTC_PORT(0));
  29         *(char *)JAZZ_RTC_BASE = data;
  30 }
  31
  32 #define RTC_ALWAYS_BCD  0
  33
  34 #endif /* __ASM_MACH_JAZZ_MC146818RTC_H */