davinci: add generic CPUFreq driver for DaVinci

Adds a basic CPUFreq driver for DaVinci devices registering with the
kernel CPUFreq infrastructure.

Support is added for both frequency and voltage regulation.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

arch/arm/mach-davinci/include/mach/cpufreq.h

@@ -0,0 +1,25 @@
+/*
+ * TI DaVinci CPUFreq platform support.
+ *
+ * Copyright (C) 2009 Texas Instruments, Inc. http://www.ti.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 version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+#ifndef _MACH_DAVINCI_CPUFREQ_H
+#define _MACH_DAVINCI_CPUFREQ_H
+
+#include <linux/cpufreq.h>
+
+struct davinci_cpufreq_config {
+	struct cpufreq_frequency_table *freq_table;
+	int (*set_voltage) (unsigned int index);
+};
+
+#endif