How to get open source driver for HD 4000 series?

[jonty789]

Hi everybody

I just been reading this article

http://www.phoronix.com/scan.php?page=news_item&px=MTU4ODQ

I am interesting in getting those drivers for my mobility HD series 4000 something ( I can't remember the exact model number sorry)

The articles links to

http://lists.freedesktop.org/archives/mesa-dev/2014-January/052969.html

I not quite sure how to get the driver and the kernel patch ( I have some knowledge of kernel but not to that extend)

Could any one please help?

Thank you