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 by Ralf Baechle 7 * Copyright (C) 2007 Thomas Bogendoerfer 8 * 9 * RTC routines for Jazz style attached Dallas chip. 10 */ 11#ifndef __ASM_MACH_JAZZ_MC146818RTC_H 12#define __ASM_MACH_JAZZ_MC146818RTC_H 13 14#include <linux/delay.h> 15 16#include <asm/io.h> 17#include <asm/jazz.h> 18 19#define RTC_PORT(x) (0x70 + (x)) 20#define RTC_IRQ 8 21 22static inline unsigned char CMOS_READ(unsigned long addr) 23{ 24 outb_p(addr, RTC_PORT(0)); 25 return *(volatile char *)JAZZ_RTC_BASE; 26} 27 28static inline void CMOS_WRITE(unsigned char data, unsigned long addr) 29{ 30 outb_p(addr, RTC_PORT(0)); 31 *(volatile char *)JAZZ_RTC_BASE = data; 32} 33 34#define RTC_ALWAYS_BCD 0 35 36#define mc146818_decode_year(year) ((year) + 1980) 37 38#endif /* __ASM_MACH_JAZZ_MC146818RTC_H */ 39