diff --git a/include/vpad/input.h b/include/vpad/input.h
index ae9fd42..59d708d 100644
--- a/include/vpad/input.h
+++ b/include/vpad/input.h
@@ -552,6 +552,10 @@ VPADSetRStickClampThreshold(VPADChan chan,
                             int32_t max,
                             int32_t min);
 
+void
+VPADGetGyroDirReviseParam(VPADChan chan,
+                          float *param);
+
 void
 VPADGetGyroZeroDriftMode(VPADChan chan,
                          VPADGyroZeroDriftMode *mode);
@@ -615,6 +619,10 @@ void
 VPADSetGyroDirReviseBase(VPADChan chan,
                          VPADDirection *base);
 
+void
+VPADSetGyroDirReviseParam(VPADChan chan,
+                          float param);
+
 void
 VPADSetGyroDirection(VPADChan chan,
                      VPADDirection *dir);
@@ -677,6 +685,12 @@ VPADInitGyroDirReviseParam(VPADChan chan);
 void
 VPADInitGyroAccReviseParam(VPADChan chan);
 
+void
+VPADStartGyroMagRevise(VPADChan chan);
+
+void
+VPADStopGyroMagRevise(VPADChan chan);
+
 /**
  * Initializes the zero drift mode on the desired Gamepad.
  *