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path: root/drivers/devfreq/governor_userspace.c
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Diffstat (limited to 'drivers/devfreq/governor_userspace.c')
-rw-r--r--drivers/devfreq/governor_userspace.c45
1 files changed, 41 insertions, 4 deletions
diff --git a/drivers/devfreq/governor_userspace.c b/drivers/devfreq/governor_userspace.c
index 0681246fc89d..35de6e83c1fe 100644
--- a/drivers/devfreq/governor_userspace.c
+++ b/drivers/devfreq/governor_userspace.c
@@ -14,6 +14,7 @@
#include <linux/devfreq.h>
#include <linux/pm.h>
#include <linux/mutex.h>
+#include <linux/module.h>
#include "governor.h"
struct userspace_data {
@@ -116,10 +117,46 @@ static void userspace_exit(struct devfreq *devfreq)
devfreq->data = NULL;
}
-const struct devfreq_governor devfreq_userspace = {
+static int devfreq_userspace_handler(struct devfreq *devfreq,
+ unsigned int event, void *data)
+{
+ int ret = 0;
+
+ switch (event) {
+ case DEVFREQ_GOV_START:
+ ret = userspace_init(devfreq);
+ break;
+ case DEVFREQ_GOV_STOP:
+ userspace_exit(devfreq);
+ break;
+ default:
+ break;
+ }
+
+ return ret;
+}
+
+static struct devfreq_governor devfreq_userspace = {
.name = "userspace",
.get_target_freq = devfreq_userspace_func,
- .init = userspace_init,
- .exit = userspace_exit,
- .no_central_polling = true,
+ .event_handler = devfreq_userspace_handler,
};
+
+static int __init devfreq_userspace_init(void)
+{
+ return devfreq_add_governor(&devfreq_userspace);
+}
+subsys_initcall(devfreq_userspace_init);
+
+static void __exit devfreq_userspace_exit(void)
+{
+ int ret;
+
+ ret = devfreq_remove_governor(&devfreq_userspace);
+ if (ret)
+ pr_err("%s: failed remove governor %d\n", __func__, ret);
+
+ return;
+}
+module_exit(devfreq_userspace_exit);
+MODULE_LICENSE("GPL");