linux-kernel - Re: [PATCH 14/21] drm/i915: Correct eDP panel power sequencing delay computations

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Message-ID: <CAKMK7uGXK=k58O2_5FRWpqiWy=eVtmRTQUphgu_0LU0rg_Ho2w@mail.gmail.com>
Date:	Mon, 3 Oct 2011 12:10:20 +0200
From:	Daniel Vetter <daniel@...ll.ch>
To:	Keith Packard <keithp@...thp.com>
Cc:	Dave Airlie <airlied@...hat.com>, intel-gfx@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH 14/21] drm/i915: Correct eDP panel power sequencing delay computations

On Sat, Oct 1, 2011 at 21:01, Keith Packard <keithp@...thp.com> wrote:
> On Sat, 1 Oct 2011 11:59:09 +0200, Daniel Vetter <daniel@...ll.ch> wrote:
>
>> So while you bang your head against this, can you add the backlight power
>> sequencing delays for lvds panels, too? The lvds panel power sequencing
>> should be imo safe - we just msleep-spin with wait_for until the power
>> sequencer has completed the request.
>
> That should be a separate patch set, probably by someone with a
> reasonable range of hardware to actually test it. Somehow I've managed
> to get rid of all of my non-PCH hardware...

Agreed, I've looked a bit at the lvds code and it's quite different,
backlight-wise. Btw, I also see backlight-not-lighting-up issues on
snb, so not only pre-pch-split. I'll look into this when your edp
fixes have settled.
-Daniel
-- 
Daniel Vetter
daniel.vetter@...ll.ch - +41 (0) 79 364 57 48 - http://blog.ffwll.ch
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