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