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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
| commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
| tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /arch/arm/include/asm/mc146818rtc.h | |
| parent | Initial commit. (diff) | |
| download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip | |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arm/include/asm/mc146818rtc.h')
| -rw-r--r-- | arch/arm/include/asm/mc146818rtc.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/arm/include/asm/mc146818rtc.h b/arch/arm/include/asm/mc146818rtc.h new file mode 100644 index 0000000000..58922879a6 --- /dev/null +++ b/arch/arm/include/asm/mc146818rtc.h @@ -0,0 +1,31 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Machine dependent access functions for RTC registers. + */ +#ifndef _ASM_MC146818RTC_H +#define _ASM_MC146818RTC_H + +#include <linux/io.h> +#include <linux/kernel.h> + +#define RTC_IRQ BUILD_BUG_ON(1) + +#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_MC146818RTC_H */ |