menuconfig EXTCON tristate "External Connector Class (extcon) support" help Say Y here to enable external connector class (extcon) support. This allows monitoring external connectors by userspace via sysfs and uevent and supports external connectors with multiple states; i.e., an extcon that may have multiple cables attached. For example, an external connector of a device may be used to connect an HDMI cable and a AC adaptor, and to host USB ports. Many of 30-pin connectors including PDMI are also good examples. if EXTCON config EXTCON_GPIO tristate "GPIO extcon support" depends on GENERIC_GPIO help Say Y here to enable GPIO based extcon support. Note that GPIO extcon supports single state per extcon instance. config EXTCON_ADC_JACK tristate "ADC Jack extcon support" help Say Y here to enable extcon device driver based on ADC values. endif # EXTCON