PXA27x/PXA3xx keypad support

modulename: pxa27x_keypad.ko

configname: CONFIG_KEYBOARD_PXA27x

Linux Kernel Configuration
└─>Device Drivers
└─>Input device support
└─>Keyboards
└─>PXA27x/PXA3xx keypad support
In linux kernel since version 2.6.24 (release Date: 2008-01-24)  
Enable support for PXA27x/PXA3xx keypad controller.

To compile this driver as a module, choose M here: the
module will be called pxa27x_keypad.

source code:
drivers/input/keyboard/pxa27x_keypad.c