30 lines
689 B
C
30 lines
689 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Machine dependent access functions for RTC registers.
|
|
*/
|
|
#ifndef __ASM_SPARC64_MC146818RTC_H
|
|
#define __ASM_SPARC64_MC146818RTC_H
|
|
|
|
#include <asm/io.h>
|
|
|
|
#ifndef RTC_PORT
|
|
extern unsigned long cmos_regs;
|
|
#define RTC_PORT(x) (cmos_regs + (x))
|
|
#define RTC_ALWAYS_BCD 0
|
|
#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_SPARC64_MC146818RTC_H */
|