[SRU][Raring][Saucy][Trusty][PATCH 0/3] drm/i915/dp: workaround BIOS eDP bpp clamping issue

[Joseph Salisbury]

On 11/05/2013 03:53 PM, Brad Figg wrote:
> On 11/05/2013 11:58 AM, Joseph Salisbury wrote:
>> BugLink: http://bugs.launchpad.net/bugs/1195483
>>
>>
>> == SRU Justification ==
>>
>> This bug affects Asus ZenBook Prime UX31A machines.  The bug causes a video failure and was introduced in upstream 3.10-rc2.  The bug was introduced by upstream commit 657445f.  I requested a revert of this commit upstream, but the commits in this SRU request were implemented as a better solution.  This bug has several duplicates and has been reported to affect >50 people.  The bug is fixed by commit c6cd2ee2, but the other two commits are also required dependencies.  These three commits are in mainline as of 3.12 final and have been cc'd to stable.  This request is being sent so the fix gets into Ubuntu until the commits come down from upstream.
>>
>> Thread on LKML:
>> https://lkml.org/lkml/2013/10/31/266
>>
>> Upstream bug report:
>> https://bugzilla.kernel.org/show_bug.cgi?id=59841#c237
>>
>>
>> == Fix ==
>> commit c6cd2ee2d59111a07cd9199564c9bdcb2d11e5cf
>> Author: Jani Nikula <jani.nikula at intel.com>
>> Date:   Mon Oct 21 10:52:07 2013 +0300
>>
>>     drm/i915/dp: workaround BIOS eDP bpp clamping issue
>>
>> commit 7195a50b5c7e00cc3312934fd022c3006b533d12
>> Author: Ville Syrjälä <ville.syrjala at linux.intel.com>
>> Date:   Tue Sep 24 14:24:05 2013 +0300
>>
>>     drm/i915: Add HSW CRT output readout support
>>
>> commit 4f56d12ebb28fceac4c6e60c8993fbfc122e1399
>> Author: Ville Syrjälä <ville.syrjala at linux.intel.com>
>> Date:   Mon Oct 21 10:52:06 2013 +0300
>>
>>     drm/i915: Add support for pipe_bpp readout
>>
>>
>> == Test Case ==
>>
>> A test kernel was built with the three commits and reported to fix this bug. 
>>
>> Jani Nikula (1):
>>   drm/i915/dp: workaround BIOS eDP bpp clamping issue
>>
>> Ville Syrjälä (2):
>>   drm/i915: Add HSW CRT output readout support
>>   drm/i915: Add support for pipe_bpp readout
>>
>>  drivers/gpu/drm/i915/intel_crt.c     |   30 ++++++++++++++++++++++++----
>>  drivers/gpu/drm/i915/intel_ddi.c     |   21 ++++++++++++++++++--
>>  drivers/gpu/drm/i915/intel_display.c |   36 ++++++++++++++++++++++++++++++++++
>>  drivers/gpu/drm/i915/intel_dp.c      |   20 +++++++++++++++++++
>>  drivers/gpu/drm/i915/intel_drv.h     |    2 ++
>>  5 files changed, 103 insertions(+), 6 deletions(-)
>>
> These three patches were all CC'd stable. I'd like to just pull them in
> via a stable release. Is that acceptable?
>
> Brad

Works for me.  Thanks, Brad.  The are also in 3.12 final, so Trusty will
get the patches when a rebase is done.