1 #ifndef _ASM_POWERPC_MC146818RTC_H 2 #define _ASM_POWERPC_MC146818RTC_H 3 4 /* 5 * Machine dependent access functions for RTC registers. 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; either version 10 * 2 of the License, or (at your option) any later version. 11 */ 12 13 #ifdef __KERNEL__ 14 15 #include <asm/io.h> 16 17 #ifndef RTC_PORT 18 #define RTC_PORT(x) (0x70 + (x)) 19 #define RTC_ALWAYS_BCD 1 /* RTC operates in binary mode */ 20 #endif 21 22 /* 23 * The yet supported machines all access the RTC index register via 24 * an ISA port access but the way to access the date register differs ... 25 */ 26 #define CMOS_READ(addr) ({ \ 27 outb_p((addr),RTC_PORT(0)); \ 28 inb_p(RTC_PORT(1)); \ 29 }) 30 #define CMOS_WRITE(val, addr) ({ \ 31 outb_p((addr),RTC_PORT(0)); \ 32 outb_p((val),RTC_PORT(1)); \ 33 }) 34 35 #endif /* __KERNEL__ */ 36 #endif /* _ASM_POWERPC_MC146818RTC_H */ 37