mc146818rtc.h
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:1k
- /*
- * Machine dependent access functions for RTC registers.
- */
- #ifndef _ASM_MC146818RTC_H
- #define _ASM_MC146818RTC_H
- #include <asm/io.h>
- #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));
- })
- #ifndef CONFIG_HPET_TIMER
- #define RTC_IRQ 8
- #else
- /* Temporary workaround due to IRQ routing problem. */
- #define RTC_IRQ 0
- #endif
- #endif /* _ASM_MC146818RTC_H */