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 CMOS_READ(unsigned long addr)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 CMOS_WRITE(unsigned char data,unsigned long addr)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