[linux-2.6-block.git] / arch / powerpc / include / asm / mc146818rtc.h

/* SPDX-License-Identifier: GPL-2.0-or-later */
#ifndef _ASM_POWERPC_MC146818RTC_H
#define _ASM_POWERPC_MC146818RTC_H

/*
 * Machine dependent access functions for RTC registers.
 */

#ifdef __KERNEL__

#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	/* __KERNEL__ */
#endif	/* _ASM_POWERPC_MC146818RTC_H */
Commit	Line	Data
2874c5fd	1	/* SPDX-License-Identifier: GPL-2.0-or-later */
a37c8875	2	#ifndef _ASM_POWERPC_MC146818RTC_H
a37c8875	3	#define _ASM_POWERPC_MC146818RTC_H
6b9269ab	4
1da177e4 LT	5	/*
1da177e4 LT	6	* Machine dependent access functions for RTC registers.
1da177e4	7	*/
6b9269ab JL	8
6b9269ab JL	9	#ifdef __KERNEL__
1da177e4 LT	10
	11	#include <asm/io.h>
	12
	13	#ifndef RTC_PORT
	14	#define RTC_PORT(x) (0x70 + (x))
	15	#define RTC_ALWAYS_BCD 1 /* RTC operates in binary mode */
	16	#endif
	17
	18	/*
	19	* The yet supported machines all access the RTC index register via
	20	* an ISA port access but the way to access the date register differs ...
	21	*/
	22	#define CMOS_READ(addr) ({ \
	23	outb_p((addr),RTC_PORT(0)); \
	24	inb_p(RTC_PORT(1)); \
	25	})
	26	#define CMOS_WRITE(val, addr) ({ \
	27	outb_p((addr),RTC_PORT(0)); \
	28	outb_p((val),RTC_PORT(1)); \
	29	})
	30
6b9269ab	31	#endif /* __KERNEL__ */
a37c8875	32	#endif /* _ASM_POWERPC_MC146818RTC_H */