1 files changed, 10 insertions, 24 deletions

diff --git a/include/linux/devfreq.h b/include/linux/devfreq.h
index 281c72a3b9d5..9cdffde74bb5 100644
--- a/include/linux/devfreq.h
+++ b/include/linux/devfreq.h
@@ -91,25 +91,18 @@ struct devfreq_dev_profile {
  *                      status of the device (load = busy_time / total_time).
  *                      If no_central_polling is set, this callback is called
  *                      only with update_devfreq() notified by OPP.
- * @init                Called when the devfreq is being attached to a device
- * @exit                Called when the devfreq is being removed from a
- *                      device. Governor should stop any internal routines
- *                      before return because related data may be
- *                      freed after exit().
- * @no_central_polling  Do not use devfreq's central polling mechanism.
- *                      When this is set, devfreq will not call
- *                      get_target_freq with devfreq_monitor(). However,
- *                      devfreq will call get_target_freq with
- *                      devfreq_update() notified by OPP framework.
+ * @event_handler       Callback for devfreq core framework to notify events
+ *                      to governors. Events include per device governor
+ *                      init and exit, opp changes out of devfreq, suspend
+ *                      and resume of per device devfreq during device idle.
  *
  * Note that the callbacks are called with devfreq->lock locked by devfreq.
  */
 struct devfreq_governor {
         const char name[DEVFREQ_NAME_LEN];
         int (*get_target_freq)(struct devfreq *this, unsigned long *freq);
-        int (*init)(struct devfreq *this);
-        void (*exit)(struct devfreq *this);
-        const bool no_central_polling;
+        int (*event_handler)(struct devfreq *devfreq,
+                                unsigned int event, void *data);
 };
 
 /**
@@ -124,18 +117,13 @@ struct devfreq_governor {
  * @nb          notifier block used to notify devfreq object that it should
  *              reevaluate operable frequencies. Devfreq users may use
  *              devfreq.nb to the corresponding register notifier call chain.
- * @polling_jiffies     interval in jiffies.
+ * @work        delayed work for load monitoring.
  * @previous_freq       previously configured frequency value.
- * @next_polling        the number of remaining jiffies to poll with
- *                      "devfreq_monitor" executions to reevaluate
- *                      frequency/voltage of the device. Set by
- *                      profile's polling_ms interval.
  * @data        Private data of the governor. The devfreq framework does not
  *              touch this.
- * @being_removed       a flag to mark that this object is being removed in
- *                      order to prevent trying to remove the object multiple times.
  * @min_freq    Limit minimum frequency requested by user (0: none)
  * @max_freq    Limit maximum frequency requested by user (0: none)
+ * @stop_polling         devfreq polling status of a device.
  *
  * This structure stores the devfreq information for a give device.
  *
@@ -153,17 +141,15 @@ struct devfreq {
         struct devfreq_dev_profile *profile;
         const struct devfreq_governor *governor;
         struct notifier_block nb;
+        struct delayed_work work;
 
-        unsigned long polling_jiffies;
         unsigned long previous_freq;
-        unsigned int next_polling;
 
         void *data; /* private data for governors */
 
-        bool being_removed;
-
         unsigned long min_freq;
         unsigned long max_freq;
+        bool stop_polling;
 };
 
 #if defined(CONFIG_PM_DEVFREQ)