v4.19.13 snapshot.
diff --git a/drivers/extcon/Kconfig b/drivers/extcon/Kconfig
new file mode 100644
index 0000000..de15bf5
--- /dev/null
+++ b/drivers/extcon/Kconfig
@@ -0,0 +1,161 @@
+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
+
+comment "Extcon Device Drivers"
+
+config EXTCON_ADC_JACK
+ tristate "ADC Jack extcon support"
+ depends on IIO
+ help
+ Say Y here to enable extcon device driver based on ADC values.
+
+config EXTCON_ARIZONA
+ tristate "Wolfson Arizona EXTCON support"
+ depends on MFD_ARIZONA && INPUT && SND_SOC
+ help
+ Say Y here to enable support for external accessory detection
+ with Wolfson Arizona devices. These are audio CODECs with
+ advanced audio accessory detection support.
+
+config EXTCON_AXP288
+ tristate "X-Power AXP288 EXTCON support"
+ depends on MFD_AXP20X && USB_SUPPORT && X86
+ select USB_ROLE_SWITCH
+ help
+ Say Y here to enable support for USB peripheral detection
+ and USB MUX switching by X-Power AXP288 PMIC.
+
+config EXTCON_GPIO
+ tristate "GPIO extcon support"
+ depends on GPIOLIB || COMPILE_TEST
+ help
+ Say Y here to enable GPIO based extcon support. Note that GPIO
+ extcon supports single state per extcon instance.
+
+config EXTCON_INTEL_INT3496
+ tristate "Intel INT3496 ACPI device extcon driver"
+ depends on GPIOLIB && ACPI && (X86 || COMPILE_TEST)
+ help
+ Say Y here to enable extcon support for USB OTG ports controlled by
+ an Intel INT3496 ACPI device.
+
+ This ACPI device is typically found on Intel Baytrail or Cherrytrail
+ based tablets, or other Baytrail / Cherrytrail devices.
+
+config EXTCON_INTEL_CHT_WC
+ tristate "Intel Cherrytrail Whiskey Cove PMIC extcon driver"
+ depends on INTEL_SOC_PMIC_CHTWC
+ help
+ Say Y here to enable extcon support for charger detection / control
+ on the Intel Cherrytrail Whiskey Cove PMIC.
+
+config EXTCON_MAX14577
+ tristate "Maxim MAX14577/77836 EXTCON Support"
+ depends on MFD_MAX14577
+ select IRQ_DOMAIN
+ select REGMAP_I2C
+ help
+ If you say yes here you get support for the MUIC device of
+ Maxim MAX14577/77836. The MAX14577/77836 MUIC is a USB port accessory
+ detector and switch.
+
+config EXTCON_MAX3355
+ tristate "Maxim MAX3355 USB OTG EXTCON Support"
+ depends on GPIOLIB || COMPILE_TEST
+ help
+ If you say yes here you get support for the USB OTG role detection by
+ MAX3355. The MAX3355 chip integrates a charge pump and comparators to
+ enable a system with an integrated USB OTG dual-role transceiver to
+ function as an USB OTG dual-role device.
+
+config EXTCON_MAX77693
+ tristate "Maxim MAX77693 EXTCON Support"
+ depends on MFD_MAX77693 && INPUT
+ select IRQ_DOMAIN
+ select REGMAP_I2C
+ help
+ If you say yes here you get support for the MUIC device of
+ Maxim MAX77693 PMIC. The MAX77693 MUIC is a USB port accessory
+ detector and switch.
+
+config EXTCON_MAX77843
+ tristate "Maxim MAX77843 EXTCON Support"
+ depends on MFD_MAX77843
+ select IRQ_DOMAIN
+ select REGMAP_I2C
+ help
+ If you say yes here you get support for the MUIC device of
+ Maxim MAX77843. The MAX77843 MUIC is a USB port accessory
+ detector add switch.
+
+config EXTCON_MAX8997
+ tristate "Maxim MAX8997 EXTCON Support"
+ depends on MFD_MAX8997 && IRQ_DOMAIN
+ help
+ If you say yes here you get support for the MUIC device of
+ Maxim MAX8997 PMIC. The MAX8997 MUIC is a USB port accessory
+ detector and switch.
+
+config EXTCON_PALMAS
+ tristate "Palmas USB EXTCON support"
+ depends on MFD_PALMAS
+ help
+ Say Y here to enable support for USB peripheral and USB host
+ detection by palmas usb.
+
+config EXTCON_QCOM_SPMI_MISC
+ tristate "Qualcomm USB extcon support"
+ depends on ARCH_QCOM || COMPILE_TEST
+ help
+ Say Y here to enable SPMI PMIC based USB cable detection
+ support on Qualcomm PMICs such as PM8941.
+
+config EXTCON_RT8973A
+ tristate "Richtek RT8973A EXTCON support"
+ depends on I2C
+ select IRQ_DOMAIN
+ select REGMAP_I2C
+ select REGMAP_IRQ
+ help
+ If you say yes here you get support for the MUIC device of
+ Richtek RT8973A. The RT8973A is a USB port accessory detector
+ and switch that is optimized to protect low voltage system
+ from abnormal high input voltage (up to 28V).
+
+config EXTCON_SM5502
+ tristate "Silicon Mitus SM5502 EXTCON support"
+ depends on I2C
+ select IRQ_DOMAIN
+ select REGMAP_I2C
+ select REGMAP_IRQ
+ help
+ If you say yes here you get support for the MUIC device of
+ Silicon Mitus SM5502. The SM5502 is a USB port accessory
+ detector and switch.
+
+config EXTCON_USB_GPIO
+ tristate "USB GPIO extcon support"
+ depends on GPIOLIB || COMPILE_TEST
+ help
+ Say Y here to enable GPIO based USB cable detection extcon support.
+ Used typically if GPIO is used for USB ID pin detection.
+
+config EXTCON_USBC_CROS_EC
+ tristate "ChromeOS Embedded Controller EXTCON support"
+ depends on MFD_CROS_EC
+ help
+ Say Y here to enable USB Type C cable detection extcon support when
+ using Chrome OS EC based USB Type-C ports.
+
+endif