HP Jornada 700 series Backlight Driver

modulename: jornada720_bl.ko

configname: CONFIG_BACKLIGHT_HP700

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Backlight & LCD device support
└─>HP Jornada 700 series Backlight Driver
In linux kernel since version 2.6.30 (release Date: 2009-06-09)  
If you have an HP Jornada 700 series,
say Y to include backlight control driver.

source code: