1/* 2 * Machine dependent access functions for RTC registers. 3 */ 4#ifndef __ASM_ALPHA_MC146818RTC_H 5#define __ASM_ALPHA_MC146818RTC_H 6 7#include <asm/io.h> 8 9#ifndef RTC_PORT 10#define RTC_PORT(x) (0x70 + (x)) 11#define RTC_ALWAYS_BCD 1 /* RTC operates in binary mode */ 12#endif 13 14/* 15 * The yet supported machines all access the RTC index register via 16 * an ISA port access but the way to access the date register differs ... 17 */ 18#define CMOS_READ(addr) ({ \ 19outb_p((addr),RTC_PORT(0)); \ 20inb_p(RTC_PORT(1)); \ 21}) 22#define CMOS_WRITE(val, addr) ({ \ 23outb_p((addr),RTC_PORT(0)); \ 24outb_p((val),RTC_PORT(1)); \ 25}) 26 27#endif /* __ASM_ALPHA_MC146818RTC_H */ 28