1 files changed, 46 insertions, 0 deletions
diff --git a/include/asm-mips64/mc146818rtc.h b/include/asm-mips64/mc146818rtc.h
new file mode 100644
index 000000000..f9e51fa61
--- /dev/null
+++ b/include/asm-mips64/mc146818rtc.h
@@ -0,0 +1,46 @@
+/* $Id$
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Machine dependent access functions for RTC registers.
+ *
+ * Copyright (C) 1996, 1997, 1998 Ralf Baechle
+ */
+#ifndef _ASM_MC146818RTC_H
+#define _ASM_MC146818RTC_H
+
+#include <asm/io.h>
+
+#ifndef RTC_PORT
+#define RTC_PORT(x)	(0x70 + (x))
+#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) ({ \
+rtc_ops->rtc_read_data(addr); \
+})
+#define CMOS_WRITE(val, addr) ({ \
+rtc_ops->rtc_write_data(val, addr); \
+})
+#define RTC_ALWAYS_BCD \
+rtc_ops->rtc_bcd_mode()
+
+/*
+ * This structure defines how to access various features of
+ * different machine types and how to access them.
+ */
+struct rtc_ops {
+	/* How to access the RTC register in a DS1287.  */
+	unsigned char (*rtc_read_data)(unsigned long addr);
+	void (*rtc_write_data)(unsigned char data, unsigned long addr);
+	int (*rtc_bcd_mode)(void);
+};
+
+extern struct rtc_ops *rtc_ops;
+
+#endif /* _ASM_MC146818RTC_H */