[PATCH] i915: initialize CADL in opregion

[Daniel Vetter]

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.
-Daniel
-- 
Daniel Vetter
Mail: daniel at ffwll.ch
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