| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | * |
| 8 | * RTC routines for PC style attached Dallas chip. |
| 9 | */ |
| 10 | #ifndef __ASM_MACH_GENERIC_MC146818RTC_H |
| 11 | #define __ASM_MACH_GENERIC_MC146818RTC_H |
| 12 | |
| 13 | #include <asm/io.h> |
| 14 | |
| 15 | #define RTC_PORT(x) (0x70 + (x)) |
| 16 | #define RTC_IRQ 8 |
| 17 | |
| 18 | static 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 | |
| 24 | static 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 1 |
| 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_GENERIC_MC146818RTC_H */ |