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