[Intel-gfx] [PATCH] drm/i915: Don't just say it, actually force edp vdd

[Daniel Vetter]

On Tue, Mar 04, 2014 at 08:17:36AM +0000, Chris Wilson wrote:
> On Tue, Mar 04, 2014 at 12:42:44AM +0100, Patrik Jakobsson wrote:
> > This patch fixes the blank screen bug introduced in 3.14-rc1 on the
> > MacBook Air 6,2. The comments state that we need to force edp vdd so
> > lets put it back.
> > 
> > The regression was introduced by the following commit:
> > 
> > commit dff392dbd258381a6c3164f38420593f2d291e3b
> > Author: Paulo Zanoni <paulo.r.zanoni at intel.com>
> > Date:   Fri Dec 6 17:32:41 2013 -0200
> > 
> >     drm/i915: don't touch the VDD when disabling the panel
> > 
> > v2: Wrap intel_disable_dp() with _vdd_on and _vdd_off
> > 
> > Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=74628
> > Cc: Paulo Zanoni <paulo.r.zanoni at intel.com>
> > Cc: Chris Wilson <chris at chris-wilson.co.uk>
> > Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson at gmail.com>
> 
> This brings the code into line with the comments, and has the bonus of
> working on a fiddly panel, so
> 
> Acked-by: Chris Wilson <chris at chris-wilson.co.uk>
> 
> I don't feel confident enough with the DP sequencing to say why it has
> to be so though.

Regression fixes win, we can figure this out later again. Queued for
-next, thanks for the patch.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch