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32 lines
736 B
32 lines
736 B
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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#ifndef _ASM_POWERPC_MC146818RTC_H |
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#define _ASM_POWERPC_MC146818RTC_H |
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/* |
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* Machine dependent access functions for RTC registers. |
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*/ |
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#ifdef __KERNEL__ |
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#include <asm/io.h> |
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#ifndef RTC_PORT |
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#define RTC_PORT(x) (0x70 + (x)) |
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#define RTC_ALWAYS_BCD 1 /* RTC operates in binary mode */ |
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#endif |
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/* |
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* The yet supported machines all access the RTC index register via |
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* an ISA port access but the way to access the date register differs ... |
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*/ |
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#define CMOS_READ(addr) ({ \ |
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outb_p((addr),RTC_PORT(0)); \ |
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inb_p(RTC_PORT(1)); \ |
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}) |
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#define CMOS_WRITE(val, addr) ({ \ |
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outb_p((addr),RTC_PORT(0)); \ |
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outb_p((val),RTC_PORT(1)); \ |
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}) |
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#endif /* __KERNEL__ */ |
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#endif /* _ASM_POWERPC_MC146818RTC_H */
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