1/*
2 * Machine dependent access functions for RTC registers.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
8 */
9#ifndef __ASM_PPC64_MC146818RTC_H
10#define __ASM_PPC64_MC146818RTC_H
11
12#include <asm/io.h>
13
14#ifndef RTC_PORT
15#define RTC_PORT(x)	(0x70 + (x))
16#define RTC_ALWAYS_BCD	1	/* RTC operates in binary mode */
17#endif
18
19/*
20 * The yet supported machines all access the RTC index register via
21 * an ISA port access but the way to access the date register differs ...
22 */
23#define CMOS_READ(addr) ({ \
24outb_p((addr),RTC_PORT(0)); \
25inb_p(RTC_PORT(1)); \
26})
27#define CMOS_WRITE(val, addr) ({ \
28outb_p((addr),RTC_PORT(0)); \
29outb_p((val),RTC_PORT(1)); \
30})
31
32#endif /* __ASM_PPC64_MC146818RTC_H */
33