Add MATRIX_MASKED DD config (#25383)

lib/python/qmk/info.py

@@ -254,6 +254,7 @@ def info_json(keyboard, force_layout=None):
     # Ensure that we have various calculated values
     info_data = _matrix_size(info_data)
     info_data = _joystick_axis_count(info_data)
+    info_data = _matrix_masked(info_data)
 
     # Merge in data from <keyboard.c>
     info_data = _extract_led_config(info_data, str(keyboard))
@@ -830,6 +831,25 @@ def _joystick_axis_count(info_data):
     return info_data
 
 
+def _matrix_masked(info_data):
+    """"Add info_data['matrix_pins.masked'] if required"""
+    mask_required = False
+
+    if 'matrix_grid' in info_data.get('dip_switch', {}):
+        mask_required = True
+    if 'matrix_grid' in info_data.get('split', {}).get('handedness', {}):
+        mask_required = True
+
+    if mask_required:
+        if 'masked' not in info_data.get('matrix_pins', {}):
+            if 'matrix_pins' not in info_data:
+                info_data['matrix_pins'] = {}
+
+            info_data['matrix_pins']['masked'] = True
+
+    return info_data
+
+
 def _check_matrix(info_data):
     """Check the matrix to ensure that row/column count is consistent.
     """