LXR linux-old/arch/mips64/lib/rtc-std.c

   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 * RTC routines for PC style attached Dallas chip.
   7 *
   8 * Copyright (C) 1998, 2001 by Ralf Baechle
   9 */
  10#include <linux/module.h>
  11#include <linux/mc146818rtc.h>
  12#include <asm/io.h>
  13
  14static 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
  20static 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
  26static int std_rtc_bcd_mode(void)
  27{
  28        return 1;
  29}
  30
  31struct rtc_ops std_rtc_ops = {
  32        &std_rtc_read_data,
  33        &std_rtc_write_data,
  34        &std_rtc_bcd_mode
  35};
  36
  37EXPORT_SYMBOL(rtc_ops);
  38