Re: [PATCH] i915: initialize CADL in opregion

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On Tue, 26 Jun 2012 00:36:24 +0200
Lekensteyn <lekensteyn@xxxxxxxxx> 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@xxxxxxxxxxxxxxxx>

-- 
Jesse Barnes, Intel Open Source Technology Center
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