diff --git a/include/hardware/input.h b/include/hardware/input.h
index 969b8ce..91354aa 100644
--- a/include/hardware/input.h
+++ b/include/hardware/input.h
@@ -375,13 +375,23 @@
     INPUT_USAGE_LED_CONTROLLER_2,
     INPUT_USAGE_LED_CONTROLLER_3,
     INPUT_USAGE_LED_CONTROLLER_4,
+
+    // switches
+    INPUT_USAGE_SWITCH_UNKNOWN,
+    INPUT_USAGE_SWITCH_LID,
+    INPUT_USAGE_SWITCH_KEYPAD_SLIDE,
+    INPUT_USAGE_SWITCH_HEADPHONE_INSERT,
+    INPUT_USAGE_SWITCH_MICROPHONE_INSERT,
+    INPUT_USAGE_SWITCH_LINEOUT_INSERT,
+    INPUT_USAGE_SWITCH_CAMERA_LENS_COVER,
 } input_usage_t;
 
-typedef enum {
+typedef enum input_collection_id {
     INPUT_COLLECTION_ID_TOUCH,
     INPUT_COLLECTION_ID_KEYBOARD,
     INPUT_COLLECTION_ID_MOUSE,
     INPUT_COLLECTION_ID_TOUCHPAD,
+    INPUT_COLLECTION_ID_SWITCH,
     // etc
 } input_collection_id_t;
 
@@ -413,6 +423,11 @@
     input_report_definition_t* (*create_output_report_definition)(input_host_t* host);
 
     /**
+     * Frees the report definition.
+     */
+    void (*free_report_definition)(input_host_t* host, input_report_definition_t* report_def);
+
+    /**
      * Append the report to the given input device.
      */
     void (*input_device_definition_add_report)(input_host_t* host,