Initial import

1 files changed, 86 insertions, 0 deletions

diff --git a/arch/arm/mach-pxa/clock.c b/arch/arm/mach-pxa/clock.c
new file mode 100644
index 000000000..4d466102a
--- /dev/null
+++ b/arch/arm/mach-pxa/clock.c
@@ -0,0 +1,86 @@
+/*
+ *  linux/arch/arm/mach-sa1100/clock.c
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/clk.h>
+#include <linux/spinlock.h>
+#include <linux/delay.h>
+#include <linux/clkdev.h>
+
+#include "clock.h"
+
+static DEFINE_SPINLOCK(clocks_lock);
+
+int clk_enable(struct clk *clk)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&clocks_lock, flags);
+	if (clk->enabled++ == 0)
+		clk->ops->enable(clk);
+	spin_unlock_irqrestore(&clocks_lock, flags);
+
+	if (clk->delay)
+		udelay(clk->delay);
+
+	return 0;
+}
+EXPORT_SYMBOL(clk_enable);
+
+void clk_disable(struct clk *clk)
+{
+	unsigned long flags;
+
+	WARN_ON(clk->enabled == 0);
+
+	spin_lock_irqsave(&clocks_lock, flags);
+	if (--clk->enabled == 0)
+		clk->ops->disable(clk);
+	spin_unlock_irqrestore(&clocks_lock, flags);
+}
+EXPORT_SYMBOL(clk_disable);
+
+unsigned long clk_get_rate(struct clk *clk)
+{
+	unsigned long rate;
+
+	rate = clk->rate;
+	if (clk->ops->getrate)
+		rate = clk->ops->getrate(clk);
+
+	return rate;
+}
+EXPORT_SYMBOL(clk_get_rate);
+
+int clk_set_rate(struct clk *clk, unsigned long rate)
+{
+	unsigned long flags;
+	int ret = -EINVAL;
+
+	if (clk->ops->setrate) {
+		spin_lock_irqsave(&clocks_lock, flags);
+		ret = clk->ops->setrate(clk, rate);
+		spin_unlock_irqrestore(&clocks_lock, flags);
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL(clk_set_rate);
+
+void clk_dummy_enable(struct clk *clk)
+{
+}
+
+void clk_dummy_disable(struct clk *clk)
+{
+}
+
+const struct clkops clk_dummy_ops = {
+	.enable		= clk_dummy_enable,
+	.disable	= clk_dummy_disable,
+};
+
+struct clk clk_dummy = {
+	.ops		= &clk_dummy_ops,
+};