ChromeOS Embedded Controller EXTCON support

modulename: extcon-usbc-cros-ec.ko

configname: CONFIG_EXTCON_USBC_CROS_EC

Linux Kernel Configuration
└─>Device Drivers
└─>External Connector Class (extcon) support
└─>ChromeOS Embedded Controller EXTCON support
In linux kernel since version 4.2 (release Date: 2015-08-30)  
Say Y here to enable USB Type C cable detection extcon support when
using Chrome OS EC based USB Type-C ports.

source code:
drivers/extcon/extcon-usbc-cros-ec.c