| /* SPDX-License-Identifier: GPL-2.0 */ | |
| /* | |
| * Machine dependent access functions for RTC registers. | |
| */ | |
| #ifndef __ASM_ALPHA_MC146818RTC_H | |
| #define __ASM_ALPHA_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)); \ | |
| }) | |
| #endif /* __ASM_ALPHA_MC146818RTC_H */ |