tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
18static 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
24static 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 0
31
32#endif /* __ASM_MACH_GENERIC_MC146818RTC_H */