1 files changed, 2 insertions, 0 deletions
diff --git a/opl/opl_internal.h b/opl/opl_internal.h
index cd125122..384b96f8 100644
--- a/opl/opl_internal.h
+++ b/opl/opl_internal.h
@@ -36,6 +36,7 @@ typedef void (*opl_write_port_func)(opl_port_t port, unsigned int value);
 typedef void (*opl_set_callback_func)(unsigned int ms,
                                       opl_callback_t callback,
                                       void *data);
+typedef void (*opl_clear_callbacks_func)(void);
 typedef void (*opl_lock_func)(void);
 typedef void (*opl_unlock_func)(void);
 
@@ -48,6 +49,7 @@ typedef struct
     opl_read_port_func read_port_func;
     opl_write_port_func write_port_func;
     opl_set_callback_func set_callback_func;
+    opl_clear_callbacks_func clear_callbacks_func;
     opl_lock_func lock_func;
     opl_unlock_func unlock_func;
 } opl_driver_t;