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- /* SPDX-License-Identifier: GPL-2.0 */
- /*
- * Machine dependent access functions for RTC registers.
- */
- #ifndef __ASM_ALPHA_MC146818RTC_H
- #define __ASM_ALPHA_MC146818RTC_H
- #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 /* __ASM_ALPHA_MC146818RTC_H */
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