#ifndef RTC_PORT#define RTC_PORT(x) (0x70 + (x))#define RTC_ALWAYS_BCD 1 /* RTC operates in binary mode */#endif/* * The yet supported machines all access the RTC index register via * an ISA port access but the way to access the date register differs ... */#define CMOS_READ(addr) ({ \outb_p((addr),RTC_PORT(0)); \inb_p(RTC_PORT(1)); \})#define CMOS_WRITE(val, addr) ({ \outb_p((addr),RTC_PORT(0)); \outb_p((val),RTC_PORT(1)); \})#endif /* _ASM_MC146818RTC_H */