diff options
Diffstat (limited to 'include/asm-ppc64/mc146818rtc.h')
-rw-r--r-- | include/asm-ppc64/mc146818rtc.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/include/asm-ppc64/mc146818rtc.h b/include/asm-ppc64/mc146818rtc.h new file mode 100644 index 000000000000..f713e1bbb533 --- /dev/null +++ b/include/asm-ppc64/mc146818rtc.h | |||
@@ -0,0 +1,32 @@ | |||
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 */ | ||