| /* |
| * This file is subject to the terms and conditions of the GNU General Public |
| * License. See the file "COPYING" in the main directory of this archive |
| * for more details. |
| * |
| * RTC routines for PC style attached Dallas chip. |
| * |
| * Copyright (C) 1998, 2001 by Ralf Baechle |
| */ |
| #include <linux/module.h> |
| #include <linux/mc146818rtc.h> |
| #include <asm/io.h> |
| |
| static unsigned char std_rtc_read_data(unsigned long addr) |
| { |
| outb_p(addr, RTC_PORT(0)); |
| return inb_p(RTC_PORT(1)); |
| } |
| |
| static void std_rtc_write_data(unsigned char data, unsigned long addr) |
| { |
| outb_p(addr, RTC_PORT(0)); |
| outb_p(data, RTC_PORT(1)); |
| } |
| |
| static int std_rtc_bcd_mode(void) |
| { |
| return 1; |
| } |
| |
| struct rtc_ops std_rtc_ops = { |
| &std_rtc_read_data, |
| &std_rtc_write_data, |
| &std_rtc_bcd_mode |
| }; |
| |
| EXPORT_SYMBOL(rtc_ops); |
