[Intel-gfx] [PATCH 0/6] Fixing sink count related detection over

[Shubhangi Shrivastava]

On Wednesday 18 November 2015 01:23 AM, Daniel Vetter wrote:
> On Mon, Nov 02, 2015 at 06:25:10PM +0530, Shubhangi Shrivastava wrote:
>> This patch set cleans up DP detection logic to bring all DPCD
>> operations at one place and to create a clear demarcation
>> between handling of long and short pulses. This simplifies
>> fixing of sink count related detection for DP panels.
>>
>> Patches:
>> 1. First two patches clean up intel_dp_detect and form a new
>> function which will include all DPCD related operations.
>> 2. Second patch splits up intel_dp_check_link_status to form
>> a new function which will handle short pulse requests.
>> 3. Last three patches fixes the detection logic related to
>> sink count i.e detect changes in sink count and handle them
>> appropriately.
>>
>> Note: this is tested on BXT with non-mst panels,
>> will get back ASAP with results for MST panels too.
> Sivakumar and Ander are working on reorganizing all the DP hpd handling,
> at least they have been before I went on vacation. I think it would make
> sense to land that work first, before we start to apply functional fixes.
>
> Please coordinate with them.
> -Daniel
Yes.. The reorganization of DP HPD handling is in progress.
I am working with Siva on the same. :)
We have found certain bugs in MST related code, pointed out
by Ander. Once it is fixed, we will re-upload the patches.
>
>> Shubhangi Shrivastava (6):
>>    drm/i915: Splitting intel_dp_detect
>>    drm/i915: Cleaning up intel_dp_hpd_pulse
>>    drm/i915: Splitting intel_dp_check_link_status
>>    drm/i915: Save sink_count for tracking changes to it
>>    drm/i915: read sink_count dpcd always
>>    drm/i915: force full detect on sink count change
>>
>>   drivers/gpu/drm/i915/intel_dp.c  | 170 +++++++++++++++++++++++++--------------
>>   drivers/gpu/drm/i915/intel_drv.h |   1 +
>>   2 files changed, 110 insertions(+), 61 deletions(-)
>>
>> -- 
>> 2.6.1
>>
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