1 /* 2 * Machine dependent access functions for RTC registers. 3 */ 4 #ifndef __ASM_PPC_MC146818RTC_H 5 #define __ASM_PPC_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) ({ \ 19 outb_p((addr),RTC_PORT(0)); \ 20 inb_p(RTC_PORT(1)); \ 21 }) 22 #define CMOS_WRITE(val, addr) ({ \ 23 outb_p((addr),RTC_PORT(0)); \ 24 outb_p((val),RTC_PORT(1)); \ 25 }) 26 27 #endif /* __ASM_PPC_MC146818RTC_H */ 28