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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | /* |
| 2 | * Machine dependent access functions for RTC registers. |
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| 3 | */ |
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| 4 | #ifndef _ASM_MC146818RTC_H |
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| 5 | #define _ASM_MC146818RTC_H |
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| 6 | |||
| 7 | #include <asm/io.h> |
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| 8 | |||
| 9 | #ifndef RTC_PORT |
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| 10 | #define RTC_PORT(x) (0x70 + (x)) |
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| 11 | #define RTC_ALWAYS_BCD 1 /* RTC operates in binary mode */ |
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| 12 | #endif |
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| 13 | |||
| 14 | /* |
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| 15 | * The yet supported machines all access the RTC index register via |
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| 16 | * an ISA port access but the way to access the date register differs ... |
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| 17 | */ |
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| 18 | #define CMOS_READ(addr) ({ \ |
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| 19 | outb_p((addr),RTC_PORT(0)); \ |
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| 20 | inb_p(RTC_PORT(1)); \ |
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| 21 | }) |
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| 22 | #define CMOS_WRITE(val, addr) ({ \ |
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| 23 | outb_p((addr),RTC_PORT(0)); \ |
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| 24 | outb_p((val),RTC_PORT(1)); \ |
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| 25 | }) |
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| 26 | |||
| 27 | #define RTC_IRQ 8 |
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| 28 | |||
| 29 | #endif /* _ASM_MC146818RTC_H */ |