LM8333 keypad chip

modulename: lm8333.ko

configname: CONFIG_KEYBOARD_LM8333

Linux Kernel Configuration
└─>Device Drivers
└─>Input device support
└─>LM8333 keypad chip
In linux kernel since version 3.1 (release Date: 2011-10-24)  
If you say yes here you get support for the National Semiconductor
LM8333 keypad controller.

To compile this driver as a module, choose M here: the
module will be called lm8333.

source code: