[PATCH] i915: initialize CADL in opregion

[Daniel Vetter]

On Tue, Jun 26, 2012 at 11:07:55PM +0200, Daniel Vetter wrote:
> On Tue, Jun 26, 2012 at 02:04:00PM -0700, Jesse Barnes wrote:
> > On Tue, 26 Jun 2012 00:36:24 +0200
> > Lekensteyn <lekensteyn at gmail.com> wrote:
> > 
> > > This is rather a hack to fix brightness hotkeys on a Clevo laptop. CADL is not
> > > used anywhere in the driver code at the moment, but it could be used in BIOS as
> > > is the case with the Clevo laptop.
> > > 
> > > The Clevo B7130 requires the CADL field to contain at least the ID of
> > > the LCD device. If this field is empty, the ACPI methods that are called
> > > on pressing brightness / display switching hotkeys will not trigger a
> > > notification. As a result, it appears as no hotkey has been pressed.
> > 
> > Not ideal, but definitely better than nothing.
> > 
> > Acked-by: Jesse Barnes <jbarnes at virtuousgeek.org>
> Queued for -next, thanks for the patch.

Unfortunately this results in a neat black screen on my ivb zenbook. Until
I've figured out what exactly's going on, I have to drop this from -next
again.
-Daniel
-- 
Daniel Vetter
Mail: daniel at ffwll.ch
Mobile: +41 (0)79 365 57 48