diff --git a/homeassistant/components/modbus/base_platform.py b/homeassistant/components/modbus/base_platform.py
index d9ee58f3c38..efcb70b5b16 100644
--- a/homeassistant/components/modbus/base_platform.py
+++ b/homeassistant/components/modbus/base_platform.py
@@ -27,7 +27,9 @@ from homeassistant.helpers.restore_state import RestoreEntity
 
 from .const import (
     CALL_TYPE_COIL,
+    CALL_TYPE_DISCRETE,
     CALL_TYPE_REGISTER_HOLDING,
+    CALL_TYPE_REGISTER_INPUT,
     CALL_TYPE_WRITE_COIL,
     CALL_TYPE_WRITE_COILS,
     CALL_TYPE_WRITE_REGISTER,
@@ -173,6 +175,14 @@ class BaseSwitch(BasePlatform, ToggleEntity, RestoreEntity):
                 CALL_TYPE_REGISTER_HOLDING,
                 CALL_TYPE_WRITE_REGISTER,
             ),
+            CALL_TYPE_DISCRETE: (
+                CALL_TYPE_DISCRETE,
+                None,
+            ),
+            CALL_TYPE_REGISTER_INPUT: (
+                CALL_TYPE_REGISTER_INPUT,
+                None,
+            ),
             CALL_TYPE_COIL: (CALL_TYPE_COIL, CALL_TYPE_WRITE_COIL),
             CALL_TYPE_X_COILS: (CALL_TYPE_COIL, CALL_TYPE_WRITE_COILS),
             CALL_TYPE_X_REGISTER_HOLDINGS: (