Sony Laptop Extras

modulename: sony-laptop.ko

configname: CONFIG_SONY_LAPTOP

Linux Kernel Configuration
└─>Device Drivers
└─>Misc devices
└─>Sony Laptop Extras
In linux kernel since version 2.6.21.1 (release Date: 2007-04-27)  
This mini-driver drives the SNC device present in the ACPI BIOS of
the Sony Vaio laptops.

It gives access to some extra laptop functionalities. In its current
form, this driver let the user set or query the screen brightness
through the backlight subsystem and remove/apply power to some
devices.

Read Documentation/sony-laptop.txt for more information.

source code: