CLPS711X Keypad support

modulename: clps711x-keypad.ko

configname: CONFIG_KEYBOARD_CLPS711X

Linux Kernel Configuration
└─>Device Drivers
└─>Input device support
└─>Keyboards
└─>CLPS711X Keypad support
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Say Y here to enable the matrix keypad on the Cirrus Logic
CLPS711X CPUs.

To compile this driver as a module, choose M here: the
module will be called clps711x-keypad.

source code:
drivers/input/keyboard/clps711x-keypad.c