diff options
Diffstat (limited to 'arch/sparc/include/asm/mc146818rtc_64.h')
-rw-r--r-- | arch/sparc/include/asm/mc146818rtc_64.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/mc146818rtc_64.h b/arch/sparc/include/asm/mc146818rtc_64.h new file mode 100644 index 0000000000..b1708a7e57 --- /dev/null +++ b/arch/sparc/include/asm/mc146818rtc_64.h @@ -0,0 +1,29 @@ +/* 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 */ |