-/* keyboard-specific setup/loop functionality */
-void * matrix_init_kb(void);
-void * matrix_scan_kb(void);
+/* executes code for Quantum */
+void matrix_init_quantum(void);
+void matrix_scan_quantum(void);
+
+void matrix_init_kb(void);
+void matrix_scan_kb(void);
+
+void matrix_init_user(void);
+void matrix_scan_user(void);
+
+#ifdef I2C_SPLIT
+ void slave_matrix_init(void);
+ uint8_t slave_matrix_scan(void);
+#endif