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-rw-r--r--arch/arm/include/asm/mc146818rtc.h28
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/arm/include/asm/mc146818rtc.h b/arch/arm/include/asm/mc146818rtc.h
new file mode 100644
index 000000000000..7b81e0c42543
--- /dev/null
+++ b/arch/arm/include/asm/mc146818rtc.h
@@ -0,0 +1,28 @@
1/*
2 * Machine dependent access functions for RTC registers.
3 */
4#ifndef _ASM_MC146818RTC_H
5#define _ASM_MC146818RTC_H
6
7#include <asm/arch/irqs.h>
8#include <asm/io.h>
9
10#ifndef RTC_PORT
11#define RTC_PORT(x) (0x70 + (x))
12#define RTC_ALWAYS_BCD 1 /* RTC operates in binary mode */
13#endif
14
15/*
16 * The yet supported machines all access the RTC index register via
17 * an ISA port access but the way to access the date register differs ...
18 */
19#define CMOS_READ(addr) ({ \
20outb_p((addr),RTC_PORT(0)); \
21inb_p(RTC_PORT(1)); \
22})
23#define CMOS_WRITE(val, addr) ({ \
24outb_p((addr),RTC_PORT(0)); \
25outb_p((val),RTC_PORT(1)); \
26})
27
28#endif /* _ASM_MC146818RTC_H */