1. 根目录:
2. drivers
3. extcon
4. Makefile

# Makefile for external connector class (extcon) devices
#

obj-$(CONFIG_EXTCON)		+= extcon.o
obj-$(CONFIG_EXTCON_ADC_JACK)	+= extcon-adc-jack.o
obj-$(CONFIG_EXTCON_ARIZONA)	+= extcon-arizona.o
obj-$(CONFIG_EXTCON_AXP288)	+= extcon-axp288.o
obj-$(CONFIG_EXTCON_GPIO)	+= extcon-gpio.o
obj-$(CONFIG_EXTCON_MAX14577)	+= extcon-max14577.o
obj-$(CONFIG_EXTCON_MAX77693)	+= extcon-max77693.o
obj-$(CONFIG_EXTCON_MAX77843)	+= extcon-max77843.o
obj-$(CONFIG_EXTCON_MAX8997)	+= extcon-max8997.o
obj-$(CONFIG_EXTCON_PALMAS)	+= extcon-palmas.o
obj-$(CONFIG_EXTCON_RT8973A)	+= extcon-rt8973a.o
obj-$(CONFIG_EXTCON_SM5502)	+= extcon-sm5502.o
obj-$(CONFIG_EXTCON_USB_GPIO)	+= extcon-usb-gpio.o