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 */
30