i386/linux/linux-2.3.21/arch/mips/lib/rtc-std.c

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