[PATCH] drm/gma500: fix backlight hotkeys behaviour on cedarview netbooks

[Anisse Astier]

On Wed, 24 Apr 2013 23:39:58 +0200, Patrik Jakobsson <patrik.r.jakobsson at gmail.com> wrote :

> On Wed, Apr 24, 2013 at 5:36 PM, Anisse Astier <anisse at astier.eu> wrote:
> > Backlight hotkeys weren't working before on certain cedartrail laptops.
> >
> > The source of this problem is that the hotkeys' ASLE opregion interrupts
> > were simply ignored. Driver seemed to expect the interrupt to be
> > associated with a pipe, but it wasn't.
> >
> > Accepting the ASLE interrupt without an associated pipe event flag fixes
> > the issue, the backlight code is called when needed, making the
> > brightness keys work properly.
> >
[...]
> 
> This also fixes backlight keys on my Asus poulsbo laptop.
> 
> An ASLE IRQ is triggered by the BIOS when writing to a PCI config register. Some
> BIOSes might trigger a pipe event at the same time but they obviously don't have
> to (and I don't think they should). I'm not sure it needs to be in
> psb_vdc_interrupt() but we might as well leave it there for now.
> 
> I'll apply this to git://github.com/patjak/drm-gma500 gma500-fixes
> 
> Thanks
> Patrik

Hi Patrik,

When do you think you'll apply it to your repo ?

Dave, do you think this could go in 3.10 ?


Regards,

Anisse