arch/mips/dec/rtc-dec.c

   1
   2 /* $Id: rtc-jazz.c,v 1.2 1998/06/25 20:19:14 ralf Exp $
   3
   4  * This file is subject to the terms and conditions of the GNU General Public
   5  * License.  See the file "COPYING" in the main directory of this archive
   6  * for more details.
   7  *
   8  * RTC routines for DECstation style attached Dallas chip.
   9  *
  10  * Copyright (C) 1998 by Ralf Baechle, Harald Koerfgen
  11  */
  12 #include <linux/mc146818rtc.h>
  13
  14 extern char *dec_rtc_base;
  15
  16 static unsigned char dec_rtc_read_data(unsigned long addr)
  17 {
  18     return (dec_rtc_base[addr * 4]);
  19 }
  20
  21 static void dec_rtc_write_data(unsigned char data, unsigned long addr)
  22 {
  23     dec_rtc_base[addr * 4] = data;
  24 }
  25
  26 static int dec_rtc_bcd_mode(void)
  27 {
  28     return 0;
  29 }
  30
  31 struct rtc_ops dec_rtc_ops =
  32 {
  33     &dec_rtc_read_data,
  34     &dec_rtc_write_data,
  35     &dec_rtc_bcd_mode
  36 };