mc146818rtc_64.h (689B)
1/* SPDX-License-Identifier: GPL-2.0 */ 2/* 3 * Machine dependent access functions for RTC registers. 4 */ 5#ifndef __ASM_SPARC64_MC146818RTC_H 6#define __ASM_SPARC64_MC146818RTC_H 7 8#include <asm/io.h> 9 10#ifndef RTC_PORT 11extern unsigned long cmos_regs; 12#define RTC_PORT(x) (cmos_regs + (x)) 13#define RTC_ALWAYS_BCD 0 14#endif 15 16/* 17 * The yet supported machines all access the RTC index register via 18 * an ISA port access but the way to access the date register differs ... 19 */ 20#define CMOS_READ(addr) ({ \ 21outb_p((addr),RTC_PORT(0)); \ 22inb_p(RTC_PORT(1)); \ 23}) 24#define CMOS_WRITE(val, addr) ({ \ 25outb_p((addr),RTC_PORT(0)); \ 26outb_p((val),RTC_PORT(1)); \ 27}) 28 29#endif /* __ASM_SPARC64_MC146818RTC_H */