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33 lines
896 B
33 lines
896 B
20 years ago
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/*
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* Machine dependent access functions for RTC registers.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef __ASM_PPC64_MC146818RTC_H
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#define __ASM_PPC64_MC146818RTC_H
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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 /* __ASM_PPC64_MC146818RTC_H */
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