ARM: Realview/Versatile/Integrator: separate out common clock code

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

2 files changed, 61 insertions, 0 deletions

diff --git a/arch/arm/plat-versatile/Makefile b/arch/arm/plat-versatile/Makefile
new file mode 100644
index 000000000000..2228fd1725ac
--- /dev/null
+++ b/arch/arm/plat-versatile/Makefile
@@ -0,0 +1 @@
+obj-y	:= clock.o
diff --git a/arch/arm/plat-versatile/clock.c b/arch/arm/plat-versatile/clock.c
new file mode 100644
index 000000000000..2fa34de92325
--- /dev/null
+++ b/arch/arm/plat-versatile/clock.c
@@ -0,0 +1,60 @@
+/*
+ *  linux/arch/arm/plat-versatile/clock.c
+ *
+ *  Copyright (C) 2004 ARM Limited.
+ *  Written by Deep Blue Solutions Limited.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/clk.h>
+#include <linux/mutex.h>
+
+#include <asm/hardware/icst.h>
+
+#include <mach/clkdev.h>
+
+int clk_enable(struct clk *clk)
+{
+	return 0;
+}
+EXPORT_SYMBOL(clk_enable);
+
+void clk_disable(struct clk *clk)
+{
+}
+EXPORT_SYMBOL(clk_disable);
+
+unsigned long clk_get_rate(struct clk *clk)
+{
+	return clk->rate;
+}
+EXPORT_SYMBOL(clk_get_rate);
+
+long clk_round_rate(struct clk *clk, unsigned long rate)
+{
+	struct icst_vco vco;
+	vco = icst_hz_to_vco(clk->params, rate);
+	return icst_hz(clk->params, vco);
+}
+EXPORT_SYMBOL(clk_round_rate);
+
+int clk_set_rate(struct clk *clk, unsigned long rate)
+{
+	int ret = -EIO;
+
+	if (clk->setvco) {
+		struct icst_vco vco;
+
+		vco = icst_hz_to_vco(clk->params, rate);
+		clk->rate = icst_hz(clk->params, vco);
+		clk->setvco(clk, vco);
+		ret = 0;
+	}
+	return ret;
+}
+EXPORT_SYMBOL(clk_set_rate);