From mboxrd@z Thu Jan  1 00:00:00 1970
From: Philipp Gesang <phg@phi-gamma.net>
Subject: Re: [bisect] regression in suspend with i915 on
 82852/855GM
Date: Fri, 26 Jun 2015 00:22:01 +0200
Message-ID: <20150625222201.GA15403@acheron>
References: <20150623222648.GD12335@acheron> <87wpysz0s0.fsf@intel.com>
 <20150625203821.GA14123@acheron> <87bng37azj.fsf@intel.com>
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To: Jani Nikula <jani.nikula@linux.intel.com>
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=C2=B7=C2=B7=C2=B7<date: 2015-06-26, Friday>=C2=B7=C2=B7=C2=B7<from: Jani N=
ikula>=C2=B7=C2=B7=C2=B7

> On Thu, 25 Jun 2015, Philipp Gesang <phg@phi-gamma.net> wrote:
> > Nice tool. With a vanilla kernel I get a value of 0x80000000
> > before suspend and 0x00000000 after resume. With the patched
> > kernel it=E2=80=99s 0x80000000 before and after.
> >
> > On the vanilla kernel, issuing ``intel_reg write 0x61260 0x80000000``=
=20
> > after resume turns the backlight back on.
>=20
> Please try this patch:
>=20
> From 018c3dab349b9ba82364ea6e7257d1bbad3df2ae Mon Sep 17 00:00:00 2001
> From: Jani Nikula <jani.nikula@intel.com>
> Date: Thu, 25 Jun 2015 23:55:06 +0300
> Subject: [PATCH] drm/i915: fix backlight on gen2
> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 E=
spoo
> Cc: Jani Nikula <jani.nikula@intel.com>

Tested based on kernel aefbef10e3=E2=80=A6. Works great, thanks!

Best,
Philipp



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