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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
| commit | 76cb841cb886eef6b3bee341a2266c76578724ad (patch) | |
| tree | f5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /arch/powerpc/include/asm/mc146818rtc.h | |
| parent | Initial commit. (diff) | |
| download | linux-76cb841cb886eef6b3bee341a2266c76578724ad.tar.xz linux-76cb841cb886eef6b3bee341a2266c76578724ad.zip | |
Adding upstream version 4.19.249.upstream/4.19.249
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/powerpc/include/asm/mc146818rtc.h')
| -rw-r--r-- | arch/powerpc/include/asm/mc146818rtc.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/mc146818rtc.h b/arch/powerpc/include/asm/mc146818rtc.h new file mode 100644 index 000000000..f2741c8b5 --- /dev/null +++ b/arch/powerpc/include/asm/mc146818rtc.h @@ -0,0 +1,36 @@ +#ifndef _ASM_POWERPC_MC146818RTC_H +#define _ASM_POWERPC_MC146818RTC_H + +/* + * Machine dependent access functions for RTC registers. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#ifdef __KERNEL__ + +#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 /* __KERNEL__ */ +#endif /* _ASM_POWERPC_MC146818RTC_H */ |