2 * Copyright 2000 MontaVista Software Inc.
3 * Author: MontaVista Software, Inc.
4 * ppopov@mvista.com or source@mvista.com
6 * Carsten Langgaard, carstenl@mips.com
7 * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved.
9 * ########################################################################
11 * This program is free software; you can distribute it and/or modify it
12 * under the terms of the GNU General Public License (Version 2) as
13 * published by the Free Software Foundation.
15 * This program is distributed in the hope it will be useful, but WITHOUT
16 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
17 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
20 * You should have received a copy of the GNU General Public License along
21 * with this program; if not, write to the Free Software Foundation, Inc.,
22 * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
24 * ########################################################################
26 * RTC routines for ITE8172 MC146818-compatible rtc chip.
29 #include <linux/mc146818rtc.h>
30 #include <asm/it8172/it8172.h>
32 #define IT8172_RTC_ADR_REG (IT8172_PCI_IO_BASE + IT_RTC_BASE)
33 #define IT8172_RTC_DAT_REG (IT8172_RTC_ADR_REG + 1)
35 static volatile char *rtc_adr_reg = KSEG1ADDR((volatile char *)IT8172_RTC_ADR_REG);
36 static volatile char *rtc_dat_reg = KSEG1ADDR((volatile char *)IT8172_RTC_DAT_REG);
38 unsigned char it8172_rtc_read_data(unsigned long addr)
43 retval = *rtc_dat_reg;
47 void it8172_rtc_write_data(unsigned char data, unsigned long addr)
53 static int it8172_rtc_bcd_mode(void)
58 struct rtc_ops it8172_rtc_ops = {
59 &it8172_rtc_read_data,
60 &it8172_rtc_write_data,