162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * Machine dependent access functions for RTC registers. 462306a36Sopenharmony_ci */ 562306a36Sopenharmony_ci#ifndef __ASM_SPARC_MC146818RTC_H 662306a36Sopenharmony_ci#define __ASM_SPARC_MC146818RTC_H 762306a36Sopenharmony_ci 862306a36Sopenharmony_ci#include <asm/io.h> 962306a36Sopenharmony_ci 1062306a36Sopenharmony_ci#ifndef RTC_PORT 1162306a36Sopenharmony_ci#define RTC_PORT(x) (0x70 + (x)) 1262306a36Sopenharmony_ci#define RTC_ALWAYS_BCD 1 /* RTC operates in binary mode */ 1362306a36Sopenharmony_ci#endif 1462306a36Sopenharmony_ci 1562306a36Sopenharmony_ci/* 1662306a36Sopenharmony_ci * The yet supported machines all access the RTC index register via 1762306a36Sopenharmony_ci * an ISA port access but the way to access the date register differs ... 1862306a36Sopenharmony_ci */ 1962306a36Sopenharmony_ci#define CMOS_READ(addr) ({ \ 2062306a36Sopenharmony_cioutb_p((addr),RTC_PORT(0)); \ 2162306a36Sopenharmony_ciinb_p(RTC_PORT(1)); \ 2262306a36Sopenharmony_ci}) 2362306a36Sopenharmony_ci#define CMOS_WRITE(val, addr) ({ \ 2462306a36Sopenharmony_cioutb_p((addr),RTC_PORT(0)); \ 2562306a36Sopenharmony_cioutb_p((val),RTC_PORT(1)); \ 2662306a36Sopenharmony_ci}) 2762306a36Sopenharmony_ci 2862306a36Sopenharmony_ci#define RTC_IRQ 8 2962306a36Sopenharmony_ci 3062306a36Sopenharmony_ci#endif /* __ASM_SPARC_MC146818RTC_H */ 31