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 DECstation style attached Dallas DS1287 chip. 7 * 8 * Copyright (C) 1998, 2001 by Ralf Baechle 9 * Copyright (C) 1998 by Harald Koerfgen 10 * Copyright (C) 2002 Maciej W. Rozycki 11 */ 12 13 #include <linux/mc146818rtc.h> 14 #include <linux/module.h> 15 #include <linux/types.h> 16 17 volatile u8 *dec_rtc_base; 18 dec_rtc_read_data(unsigned long addr)19static unsigned char dec_rtc_read_data(unsigned long addr) 20 { 21 return dec_rtc_base[addr * 4]; 22 } 23 dec_rtc_write_data(unsigned char data,unsigned long addr)24static void dec_rtc_write_data(unsigned char data, unsigned long addr) 25 { 26 dec_rtc_base[addr * 4] = data; 27 } 28 dec_rtc_bcd_mode(void)29static int dec_rtc_bcd_mode(void) 30 { 31 return 0; 32 } 33 34 struct rtc_ops dec_rtc_ops = { 35 &dec_rtc_read_data, 36 &dec_rtc_write_data, 37 &dec_rtc_bcd_mode 38 }; 39 40 EXPORT_SYMBOL(dec_rtc_base); 41