[Bug 94439] [BXT-P/APL] DP and HDMI will stop output after resumed from S3

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94439

--- Comment #19 from Humberto Israel Perez Rodriguez <humberto.i.perez.rodriguez at intel.com> ---
(In reply to Kimmo Nikkanen from comment #16)
> The VBT solution is pushed to dinq
> 
> commit d252bf68b75792108ae2821c3a6e1cdc58e88cb9
> Author: Shubhangi Shrivastava <shubhangi.shrivastava at intel.com>
> Date:   Thu Mar 31 16:11:47 2016 +0530
> 
>     drm/i915: Set invert bit for hpd based on VBT
> 
> 
> Can QA please verify whether this solves this problem

Hi : 

after test this commit we can see the same issue, DP works after S3 but HDMI
not.



commit d252bf68b75792108ae2821c3a6e1cdc58e88cb9
Author: Shubhangi Shrivastava <shubhangi.shrivastava at intel.com>
Date:   Thu Mar 31 16:11:47 2016 +0530

    drm/i915: Set invert bit for hpd based on VBT

    This patch sets the invert bit for hpd detection for each port
    based on VBT configuration. Since each AOB can be designed to
    depend on invert bit or not, it is expected if an AOB requires
    invert bit, the user will set respective bit in VBT.

    v2: Separated VBT parsing from the rest of the logic. (Jani)

    v3: Moved setting invert bit logic to bxt_hpd_irq_setup()
        and changed its logic to avoid looping twice. (Ville)

    v4: Changed the logic to mask out the bits first and then
        set them to remove need of temporary variable. (Ville)

    v5: Moved defines to existing set of defines for the register
        and added required breaks. (Ville)

    Signed-off-by: Sivakumar Thulasimani <sivakumar.thulasimani at intel.com>
    Signed-off-by: Durgadoss R <durgadoss.r at intel.com>
    Signed-off-by: Shubhangi Shrivastava <shubhangi.shrivastava at intel.com>
    Reviewed-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
    [Jani: fixed some checkpatch noise, added kernel-doc.]
    Signed-off-by: Jani Nikula <jani.nikula at intel.com>
    Link:
http://patchwork.freedesktop.org/patch/msgid/1459420907-11383-2-git-send-email-shubhangi.shrivastava@intel.com


Architecture: source amd64 all
Version: 4.5.0-rc7

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