diff --git a/sys/dev/ichiic/ig4_acpi.c b/sys/dev/ichiic/ig4_acpi.c
index 4b389c62def..b4ab6175ca6 100644
--- a/sys/dev/ichiic/ig4_acpi.c
+++ b/sys/dev/ichiic/ig4_acpi.c
@@ -169,6 +169,17 @@ static device_method_t ig4iic_acpi_methods[] = {
 	DEVMETHOD(device_suspend, ig4iic_acpi_suspend),
 	DEVMETHOD(device_resume, ig4iic_acpi_resume),
 
+	/* Bus interface */
+	DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
+	DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
+	DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource),
+	DEVMETHOD(bus_release_resource, bus_generic_release_resource),
+	DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
+	DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
+	DEVMETHOD(bus_adjust_resource, bus_generic_adjust_resource),
+	DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
+	DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
+
 	/* iicbus interface */
 	DEVMETHOD(iicbus_transfer, ig4iic_transfer),
 	DEVMETHOD(iicbus_reset, ig4iic_reset),
diff --git a/sys/dev/ichiic/ig4_pci.c b/sys/dev/ichiic/ig4_pci.c
index 5e3db6ed4c8..d4a035ae945 100644
--- a/sys/dev/ichiic/ig4_pci.c
+++ b/sys/dev/ichiic/ig4_pci.c
@@ -230,6 +230,18 @@ static device_method_t ig4iic_pci_methods[] = {
 	DEVMETHOD(device_suspend, ig4iic_pci_suspend),
 	DEVMETHOD(device_resume, ig4iic_pci_resume),
 
+	/* Bus interface */
+	DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
+	DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
+	DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource),
+	DEVMETHOD(bus_release_resource, bus_generic_release_resource),
+	DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
+	DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
+	DEVMETHOD(bus_adjust_resource, bus_generic_adjust_resource),
+	DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
+	DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
+
+	/* iicbus interface */
 	DEVMETHOD(iicbus_transfer, ig4iic_transfer),
 	DEVMETHOD(iicbus_reset, ig4iic_reset),
 	DEVMETHOD(iicbus_callback, ig4iic_callback),