[PATCH 2/2] ACPI / video / i915: Remove ACPI backlight if firmware expects Windows 8
matthew.garrett at nebula.com
Tue Sep 10 07:21:26 PDT 2013
On Tue, 2013-09-10 at 17:21 +0300, Jani Nikula wrote:
> On Tue, 10 Sep 2013, Matthew Garrett <matthew.garrett at nebula.com> wrote:
> > On Tue, 2013-09-10 at 16:53 +0300, Jani Nikula wrote:
> >> I think the parameter "Does the ACPI backlight interface work or not"
> >> belongs to the ACPI video driver.
> > That depends on how Windows 8 works. If Windows 8 policy is handled by
> > the GPU drivers then it belongs in i915. If it's handled by the ACPI
> > code then it belongs in the ACPI code.
> I fail to see the logic. Windows 8 policy dictates whether we can use
> the AML code or not. IMHO, ACPI code is in the best position to figure
> this out and quirk as necessary. It's the part that knows about Windows
> 8, not i915.
So if nvidia hardware uses the ACPI interface and Intel doesn't, we
should still quirk it in the ACPI driver?
Matthew Garrett <matthew.garrett at nebula.com>
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