1 /* 2 * Machine dependent access functions for RTC registers. 3 */ 4 #ifndef _ASM_MC146818RTC_H 5 #define _ASM_MC146818RTC_H 6 7 #include <asm/arch/irqs.h> 8 #include <asm/io.h> 9 10 #ifndef RTC_PORT 11 #define RTC_PORT(x) (0x70 + (x)) 12 #define RTC_ALWAYS_BCD 1 /* RTC operates in binary mode */ 13 #endif 14 15 /* 16 * The yet supported machines all access the RTC index register via 17 * an ISA port access but the way to access the date register differs ... 18 */ 19 #define CMOS_READ(addr) ({ \ 20 outb_p((addr),RTC_PORT(0)); \ 21 inb_p(RTC_PORT(1)); \ 22 }) 23 #define CMOS_WRITE(val, addr) ({ \ 24 outb_p((addr),RTC_PORT(0)); \ 25 outb_p((val),RTC_PORT(1)); \ 26 }) 27 28 #endif /* _ASM_MC146818RTC_H */ 29
