1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * This file is subject to the terms and conditions of the GNU General Public 3*4882a593Smuzhiyun * License. See the file "COPYING" in the main directory of this archive 4*4882a593Smuzhiyun * for more details. 5*4882a593Smuzhiyun * 6*4882a593Smuzhiyun * Copyright (C) 1998, 2001, 03 by Ralf Baechle 7*4882a593Smuzhiyun * 8*4882a593Smuzhiyun * RTC routines for PC style attached Dallas chip. 9*4882a593Smuzhiyun */ 10*4882a593Smuzhiyun #ifndef __ASM_MACH_GENERIC_MC146818RTC_H 11*4882a593Smuzhiyun #define __ASM_MACH_GENERIC_MC146818RTC_H 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun #include <asm/io.h> 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun #define RTC_PORT(x) (0x70 + (x)) 16*4882a593Smuzhiyun #define RTC_IRQ 8 17*4882a593Smuzhiyun CMOS_READ(unsigned long addr)18*4882a593Smuzhiyunstatic inline unsigned char CMOS_READ(unsigned long addr) 19*4882a593Smuzhiyun { 20*4882a593Smuzhiyun outb_p(addr, RTC_PORT(0)); 21*4882a593Smuzhiyun return inb_p(RTC_PORT(1)); 22*4882a593Smuzhiyun } 23*4882a593Smuzhiyun CMOS_WRITE(unsigned char data,unsigned long addr)24*4882a593Smuzhiyunstatic inline void CMOS_WRITE(unsigned char data, unsigned long addr) 25*4882a593Smuzhiyun { 26*4882a593Smuzhiyun outb_p(addr, RTC_PORT(0)); 27*4882a593Smuzhiyun outb_p(data, RTC_PORT(1)); 28*4882a593Smuzhiyun } 29*4882a593Smuzhiyun 30*4882a593Smuzhiyun #define RTC_ALWAYS_BCD 0 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun #ifndef mc146818_decode_year 33*4882a593Smuzhiyun #define mc146818_decode_year(year) ((year) < 70 ? (year) + 2000 : (year) + 1900) 34*4882a593Smuzhiyun #endif 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun #endif /* __ASM_MACH_GENERIC_MC146818RTC_H */ 37