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1da177e4 LT |
1 | /* |
2 | * Machine dependent access functions for RTC registers. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
6 | * as published by the Free Software Foundation; either version | |
7 | * 2 of the License, or (at your option) any later version. | |
8 | */ | |
9 | #ifndef __ASM_PPC64_MC146818RTC_H | |
10 | #define __ASM_PPC64_MC146818RTC_H | |
11 | ||
12 | #include <asm/io.h> | |
13 | ||
14 | #ifndef RTC_PORT | |
15 | #define RTC_PORT(x) (0x70 + (x)) | |
16 | #define RTC_ALWAYS_BCD 1 /* RTC operates in binary mode */ | |
17 | #endif | |
18 | ||
19 | /* | |
20 | * The yet supported machines all access the RTC index register via | |
21 | * an ISA port access but the way to access the date register differs ... | |
22 | */ | |
23 | #define CMOS_READ(addr) ({ \ | |
24 | outb_p((addr),RTC_PORT(0)); \ | |
25 | inb_p(RTC_PORT(1)); \ | |
26 | }) | |
27 | #define CMOS_WRITE(val, addr) ({ \ | |
28 | outb_p((addr),RTC_PORT(0)); \ | |
29 | outb_p((val),RTC_PORT(1)); \ | |
30 | }) | |
31 | ||
32 | #endif /* __ASM_PPC64_MC146818RTC_H */ |