1 files changed, 18 insertions, 0 deletions

diff --git a/include/linux/hid-sensor-hub.h b/include/linux/hid-sensor-hub.h
index 32ba45158d39..a265af294ea4 100644
--- a/include/linux/hid-sensor-hub.h
+++ b/include/linux/hid-sensor-hub.h
@@ -47,11 +47,13 @@ struct hid_sensor_hub_attribute_info {
  * @hdev:               Stores the hid instance.
  * @vendor_id:          Vendor id of hub device.
  * @product_id:         Product id of hub device.
+ * @ref_cnt:            Number of MFD clients have opened this device
  */
 struct hid_sensor_hub_device {
         struct hid_device *hdev;
         u32 vendor_id;
         u32 product_id;
+        int ref_cnt;
 };
 
 /**
@@ -74,6 +76,22 @@ struct hid_sensor_hub_callbacks {
                          void *priv);
 };
 
+/**
+* sensor_hub_device_open() - Open hub device
+* @hsdev:       Hub device instance.
+*
+* Used to open hid device for sensor hub.
+*/
+int sensor_hub_device_open(struct hid_sensor_hub_device *hsdev);
+
+/**
+* sensor_hub_device_clode() - Close hub device
+* @hsdev:       Hub device instance.
+*
+* Used to clode hid device for sensor hub.
+*/
+void sensor_hub_device_close(struct hid_sensor_hub_device *hsdev);
+
 /* Registration functions */
 
 /**