From 4248acf640a74762cd0c5376a1fd9f1a3a0f87ac Mon Sep 17 00:00:00 2001
From: wdenk <wdenk>
Date: Mon, 20 Nov 2000 17:21:10 +0000
Subject: Initial revision

---
 include/asm-ppc/mc146818rtc.h | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 include/asm-ppc/mc146818rtc.h

(limited to 'include/asm-ppc/mc146818rtc.h')

diff --git a/include/asm-ppc/mc146818rtc.h b/include/asm-ppc/mc146818rtc.h
new file mode 100644
index 0000000..5f806c4
--- /dev/null
+++ b/include/asm-ppc/mc146818rtc.h
@@ -0,0 +1,27 @@
+/*
+ * Machine dependent access functions for RTC registers.
+ */
+#ifndef __ASM_PPC_MC146818RTC_H
+#define __ASM_PPC_MC146818RTC_H
+
+#include <asm/io.h>
+
+#ifndef RTC_PORT
+#define RTC_PORT(x) (0x70 + (x))
+#define RTC_ALWAYS_BCD  1   /* RTC operates in binary mode */
+#endif
+
+/*
+ * The yet supported machines all access the RTC index register via
+ * an ISA port access but the way to access the date register differs ...
+ */
+#define CMOS_READ(addr) ({ \
+outb_p((addr),RTC_PORT(0)); \
+inb_p(RTC_PORT(1)); \
+})
+#define CMOS_WRITE(val, addr) ({ \
+outb_p((addr),RTC_PORT(0)); \
+outb_p((val),RTC_PORT(1)); \
+})
+
+#endif /* __ASM_PPC_MC146818RTC_H */
-- 
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