struct qcom_tlmm_softc {
 	int			gpio_npins;
 	struct gpio_pin		*gpio_pins;
 	uint32_t		sc_debug;
+	qcom_tlmm_chipset_t	sc_chipset;
+	void			(*sc_attach_func)(struct qcom_tlmm_softc *);
+
+	struct qcom_tlmm_hw_callbacks	*sc_hw;
 
 	const struct qcom_tlmm_gpio_mux	*gpio_muxes;
 	const struct qcom_tlmm_spec_pin	*spec_pins;