Dell Airplane Mode Switch driver

modulename: dell-rbtn.ko

configname: CONFIG_DELL_RBTN

Linux Kernel Configuration
└─>Device Drivers
└─>X86 Platform Specific Device Drivers
└─>Dell Airplane Mode Switch driver
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Say Y here if you want to support Dell Airplane Mode Switch ACPI
device on Dell laptops. Sometimes it has names: DELLABCE or DELRBTN.
This driver register rfkill device or input hotkey device depending
on hardware type (hw switch slider or keyboard toggle button). For
rfkill devices it receive HW switch events and set correct hard
rfkill state.

To compile this driver as a module, choose M here: the module will
be called dell-rbtn.

source code: