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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Machine dependent access functions for RTC registers.
*/
#ifndef _ASM_MC146818RTC_H
#define _ASM_MC146818RTC_H
#include <linux/io.h>
#include <linux/kernel.h>
#define RTC_IRQ BUILD_BUG_ON(1)
#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_MC146818RTC_H */
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