1 files changed, 14 insertions, 2 deletions

diff --git a/include/linux/devfreq.h b/include/linux/devfreq.h
index 597294e0cc40..3aae5b3af87c 100644
--- a/include/linux/devfreq.h
+++ b/include/linux/devfreq.h
@@ -19,6 +19,13 @@
 
 #define DEVFREQ_NAME_LEN 16
 
+/* DEVFREQ governor name */
+#define DEVFREQ_GOV_SIMPLE_ONDEMAND     "simple_ondemand"
+#define DEVFREQ_GOV_PERFORMANCE         "performance"
+#define DEVFREQ_GOV_POWERSAVE           "powersave"
+#define DEVFREQ_GOV_USERSPACE           "userspace"
+#define DEVFREQ_GOV_PASSIVE             "passive"
+
 /* DEVFREQ notifier interface */
 #define DEVFREQ_TRANSITION_NOTIFIER     (0)
 
@@ -84,8 +91,9 @@ struct devfreq_dev_status {
  *                      from devfreq_remove_device() call. If the user
  *                      has registered devfreq->nb at a notifier-head,
  *                      this is the time to unregister it.
- * @freq_table: Optional list of frequencies to support statistics.
- * @max_state:  The size of freq_table.
+ * @freq_table:         Optional list of frequencies to support statistics
+ *                      and freq_table must be generated in ascending order.
+ * @max_state:          The size of freq_table.
  */
 struct devfreq_dev_profile {
         unsigned long initial_freq;
@@ -120,6 +128,8 @@ struct devfreq_dev_profile {
  *              touch this.
  * @min_freq:   Limit minimum frequency requested by user (0: none)
  * @max_freq:   Limit maximum frequency requested by user (0: none)
+ * @scaling_min_freq:   Limit minimum frequency requested by OPP interface
+ * @scaling_max_freq:   Limit maximum frequency requested by OPP interface
  * @stop_polling:        devfreq polling status of a device.
  * @total_trans:        Number of devfreq transitions
  * @trans_table:        Statistics of devfreq transitions
@@ -153,6 +163,8 @@ struct devfreq {
 
         unsigned long min_freq;
         unsigned long max_freq;
+        unsigned long scaling_min_freq;
+        unsigned long scaling_max_freq;
         bool stop_polling;
 
         /* information for device frequency transition */