[ARM] 5549/1: Add clock api for w90p910 platform.

Add clock api for w90p910 platform.

Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-w90x900/clock.h b/arch/arm/mach-w90x900/clock.h
new file mode 100644
index 0000000..4f27bda
--- /dev/null
+++ b/arch/arm/mach-w90x900/clock.h
@@ -0,0 +1,36 @@
+/*
+ * linux/arch/arm/mach-w90x900/clock.h
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation
+ *
+ * Wan ZongShun <mcuos.com@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License.
+ */
+
+#include <asm/clkdev.h>
+
+void w90x900_clk_enable(struct clk *clk, int enable);
+void clks_register(struct clk_lookup *clks, size_t num);
+
+struct clk {
+	unsigned long		cken;
+	unsigned int		enabled;
+	void			(*enable)(struct clk *, int enable);
+};
+
+#define DEFINE_CLK(_name, _ctrlbit)			\
+struct clk clk_##_name = {				\
+		.enable	= w90x900_clk_enable,		\
+		.cken	= (1 << _ctrlbit),		\
+	}
+
+#define DEF_CLKLOOK(_clk, _devname, _conname)		\
+	{						\
+		.clk		= _clk,			\
+		.dev_id		= _devname,		\
+		.con_id		= _conname,		\
+	}
+