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 * Copyright (C) 1998, 2001, 03, 07 by Ralf Baechle (ralf@linux-mips.org) 7 * 8 * RTC routines for PC style attached Dallas chip. 9 */ 10#ifndef __ASM_MACH_LOONGSON_MC146818RTC_H 11#define __ASM_MACH_LOONGSON_MC146818RTC_H 12 13#include <linux/io.h> 14 15#define RTC_PORT(x) (0x70 + (x)) 16#define RTC_IRQ 8 17 18static inline unsigned char CMOS_READ(unsigned long addr) 19{ 20 outb_p(addr, RTC_PORT(0)); 21 return inb_p(RTC_PORT(1)); 22} 23 24static inline void CMOS_WRITE(unsigned char data, unsigned long addr) 25{ 26 outb_p(addr, RTC_PORT(0)); 27 outb_p(data, RTC_PORT(1)); 28} 29 30#define RTC_ALWAYS_BCD 0 31 32#ifndef mc146818_decode_year 33#define mc146818_decode_year(year) ((year) < 70 ? (year) + 2000 : (year) + 1970) 34#endif 35 36#endif /* __ASM_MACH_LOONGSON_MC146818RTC_H */ 37