1 files changed, 38 insertions, 0 deletions

diff --git a/arch/mips/include/asm/mach-jazz/mc146818rtc.h b/arch/mips/include/asm/mach-jazz/mc146818rtc.h
new file mode 100644
index 000000000000..987f727afe25
--- /dev/null
+++ b/arch/mips/include/asm/mach-jazz/mc146818rtc.h
@@ -0,0 +1,38 @@
+/*
+ * 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.
+ *
+ * Copyright (C) 1998, 2001, 03 by Ralf Baechle
+ * Copyright (C) 2007 Thomas Bogendoerfer
+ *
+ * RTC routines for Jazz style attached Dallas chip.
+ */
+#ifndef __ASM_MACH_JAZZ_MC146818RTC_H
+#define __ASM_MACH_JAZZ_MC146818RTC_H
+
+#include <linux/delay.h>
+
+#include <asm/io.h>
+#include <asm/jazz.h>
+
+#define RTC_PORT(x)     (0x70 + (x))
+#define RTC_IRQ         8
+
+static inline unsigned char CMOS_READ(unsigned long addr)
+{
+        outb_p(addr, RTC_PORT(0));
+        return *(volatile char *)JAZZ_RTC_BASE;
+}
+
+static inline void CMOS_WRITE(unsigned char data, unsigned long addr)
+{
+        outb_p(addr, RTC_PORT(0));
+        *(volatile char *)JAZZ_RTC_BASE = data;
+}
+
+#define RTC_ALWAYS_BCD  0
+
+#define mc146818_decode_year(year) ((year) + 1980)
+
+#endif /* __ASM_MACH_JAZZ_MC146818RTC_H */