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Diffstat (limited to 'include/asm-mips/mach-generic/mc146818rtc.h')
-rw-r--r--include/asm-mips/mach-generic/mc146818rtc.h36
1 files changed, 36 insertions, 0 deletions
diff --git a/include/asm-mips/mach-generic/mc146818rtc.h b/include/asm-mips/mach-generic/mc146818rtc.h
new file mode 100644
index 000000000000..90c2e6f77faa
--- /dev/null
+++ b/include/asm-mips/mach-generic/mc146818rtc.h
@@ -0,0 +1,36 @@
+/*
+ * 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
+ *
+ * RTC routines for PC style attached Dallas chip.
+ */
+#ifndef __ASM_MACH_GENERIC_MC146818RTC_H
+#define __ASM_MACH_GENERIC_MC146818RTC_H
+
+#include <asm/io.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 inb_p(RTC_PORT(1));
+}
+
+static inline void CMOS_WRITE(unsigned char data, unsigned long addr)
+{
+ outb_p(addr, RTC_PORT(0));
+ outb_p(data, RTC_PORT(1));
+}
+
+#define RTC_ALWAYS_BCD 1
+
+#ifndef mc146818_decode_year
+#define mc146818_decode_year(year) ((year) < 70 ? (year) + 2000 : (year) + 1970)
+#endif
+
+#endif /* __ASM_MACH_GENERIC_MC146818RTC_H */