libbacklight support for randr backlight property

[Michel Dänzer]

On Don, 2013-06-06 at 11:08 +1000, Dave Airlie wrote:
> xbacklight and gnome would really like to use xrandr to control the backlight
> if possible, I've just taken the property code from intel driver, and hooked
> it up to libbacklight from git://git.freedesktop.org/git/libbacklight.
> 
> The kernel can't deal with this due to the insanity that is ACPI and non-ACPI
> backlight controls, so lets just hope this works instead!

The changes look good to me.


> I've only tested this on my T60p ancient piece of crap, appreciate any testing
> anyone can give it.

It doesn't actually create the properties on this PowerBook, but I'm
sure that can be worked out later on.


-- 
Earthling Michel Dänzer           |                   http://www.amd.com
Libre software enthusiast         |          Debian, X and DRI developer