ARM: LPC32XX: Clock driver

Clock driver for the LPC32XX architecture
Signed-off-by: NKevin Wells <wellsk40@gmail.com>
Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>

arch/arm/mach-lpc32xx/clock.h

+/*
+ * arch/arm/mach-lpc32xx/clock.h
+ *
+ * Author: Kevin Wells <kevin.wells@nxp.com>
+ *
+ * Copyright (C) 2010 NXP Semiconductors
+ *
+ * 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, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __LPC32XX_CLOCK_H
+#define __LPC32XX_CLOCK_H
+
+struct clk {
+	struct list_head node;
+	struct clk *parent;
+	u32 rate;
+	u32 usecount;
+
+	int (*set_rate) (struct clk *, unsigned long);
+	unsigned long (*round_rate) (struct clk *, unsigned long);
+	unsigned long (*get_rate) (struct clk *clk);
+	int (*enable) (struct clk *, int);
+
+	/* Register address and bit mask for simple clocks */
+	void __iomem *enable_reg;
+	u32 enable_mask;
+};
+
+#endif