PM / devfreq: Add basic governors

[pandora-kernel.git] / drivers / devfreq / governor_powersave.c

diff --git a/drivers/devfreq/governor_powersave.c b/drivers/devfreq/governor_powersave.c
new file mode 100644 (file)
index 0000000..2483a85
--- /dev/null
+++ b/drivers/devfreq/governor_powersave.c
@@ -0,0 +1,29 @@
+/*
+ *  linux/drivers/devfreq/governor_powersave.c
+ *
+ *  Copyright (C) 2011 Samsung Electronics
+ *     MyungJoo Ham <myungjoo.ham@samsung.com>
+ *
+ * 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/devfreq.h>
+
+static int devfreq_powersave_func(struct devfreq *df,
+                                 unsigned long *freq)
+{
+       /*
+        * target callback should be able to get ceiling value as
+        * said in devfreq.h
+        */
+       *freq = 0;
+       return 0;
+}
+
+const struct devfreq_governor devfreq_powersave = {
+       .name = "powersave",
+       .get_target_freq = devfreq_powersave_func,
+       .no_central_polling = true,
+};