| /* |
| * This file is subject to the terms and conditions of the GNU General Public |
| * License. See the file "COPYING" in the main directory of this archive |
| * for more details. |
| * |
| * Copyright (C) 1998, 2001, 03 by Ralf Baechle |
| * |
| * RTC routines for PC style attached Dallas chip. |
| */ |
| #ifndef __ASM_MACH_GENERIC_MC146818RTC_H |
| #define __ASM_MACH_GENERIC_MC146818RTC_H |
| |
| #include <asm/io.h> |
| |
| #define RTC_PORT(x) (0x70 + (x)) |
| #define RTC_IRQ 8 |
| |
| static inline unsigned char CMOS_READ(unsigned long addr) |
| { |
| outb_p(addr, RTC_PORT(0)); |
| return inb_p(RTC_PORT(1)); |
| } |
| |
| static inline void CMOS_WRITE(unsigned char data, unsigned long addr) |
| { |
| outb_p(addr, RTC_PORT(0)); |
| outb_p(data, RTC_PORT(1)); |
| } |
| |
| #define RTC_ALWAYS_BCD 1 |
| |
| #ifndef mc146818_decode_year |
| #define mc146818_decode_year(year) ((year) < 70 ? (year) + 2000 : (year) + 1900) |
| #endif |
| |
| #endif /* __ASM_MACH_GENERIC_MC146818RTC_H */ |