PM / devfreq: map devfreq drivers to governor using name

[deliverable/linux.git] / drivers / devfreq / governor_simpleondemand.c

diff --git a/drivers/devfreq/governor_simpleondemand.c b/drivers/devfreq/governor_simpleondemand.c
index a2e3eae790119ef7e01527a94b4bf44b20589a07..a870a24bb56b05731e8b9a0c804bbdfc5126b1e9 100644 (file)
--- a/drivers/devfreq/governor_simpleondemand.c
+++ b/drivers/devfreq/governor_simpleondemand.c
@@ -12,6 +12,7 @@
 #include <linux/errno.h>
 #include <linux/devfreq.h>
 #include <linux/math64.h>
+#include "governor.h"
 
 /* Default constants for DevFreq-Simple-Ondemand (DFSO) */
 #define DFSO_UPTHRESHOLD       (90)
@@ -88,7 +89,57 @@ static int devfreq_simple_ondemand_func(struct devfreq *df,
        return 0;
 }
 
-const struct devfreq_governor devfreq_simple_ondemand = {
+static int devfreq_simple_ondemand_handler(struct devfreq *devfreq,
+                               unsigned int event, void *data)
+{
+       switch (event) {
+       case DEVFREQ_GOV_START:
+               devfreq_monitor_start(devfreq);
+               break;
+
+       case DEVFREQ_GOV_STOP:
+               devfreq_monitor_stop(devfreq);
+               break;
+
+       case DEVFREQ_GOV_INTERVAL:
+               devfreq_interval_update(devfreq, (unsigned int *)data);
+               break;
+
+       case DEVFREQ_GOV_SUSPEND:
+               devfreq_monitor_suspend(devfreq);
+               break;
+
+       case DEVFREQ_GOV_RESUME:
+               devfreq_monitor_resume(devfreq);
+               break;
+
+       default:
+               break;
+       }
+
+       return 0;
+}
+
+static struct devfreq_governor devfreq_simple_ondemand = {
        .name = "simple_ondemand",
        .get_target_freq = devfreq_simple_ondemand_func,
+       .event_handler = devfreq_simple_ondemand_handler,
 };
+
+static int __init devfreq_simple_ondemand_init(void)
+{
+       return devfreq_add_governor(&devfreq_simple_ondemand);
+}
+subsys_initcall(devfreq_simple_ondemand_init);
+
+static void __exit devfreq_simple_ondemand_exit(void)
+{
+       int ret;
+
+       ret = devfreq_remove_governor(&devfreq_simple_ondemand);
+       if (ret)
+               pr_err("%s: failed remove governor %d\n", __func__, ret);
+
+       return;
+}
+module_exit(devfreq_simple_ondemand_exit);