2 * Carsten Langgaard, carstenl@mips.com
3 * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
5 * ########################################################################
7 * This program is free software; you can distribute it and/or modify it
8 * under the terms of the GNU General Public License (Version 2) as
9 * published by the Free Software Foundation.
11 * This program is distributed in the hope it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
20 * ########################################################################
22 * RTC routines for Malta style attached PIIX4 device, which contains a
23 * Motorola MC146818A-compatible Real Time Clock.
26 #include <linux/mc146818rtc.h>
27 #include <asm/mips-boards/malta.h>
29 static unsigned char malta_rtc_read_data(unsigned long addr)
31 outb(addr, MALTA_RTC_ADR_REG);
32 return inb(MALTA_RTC_DAT_REG);
35 static void malta_rtc_write_data(unsigned char data, unsigned long addr)
37 outb(addr, MALTA_RTC_ADR_REG);
38 outb(data, MALTA_RTC_DAT_REG);
41 static int malta_rtc_bcd_mode(void)
46 struct rtc_ops malta_rtc_ops = {
48 &malta_rtc_write_data,