[Bug 92324] New: [Intel-gfx] [PATCH] fixup! drm/i915/skl: Eliminate usage of pipe_wm_parameters from SKL-style WM (v3) [regression]

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92324

            Bug ID: 92324
           Summary: [Intel-gfx] [PATCH] fixup! drm/i915/skl: Eliminate
                    usage of pipe_wm_parameters from SKL-style WM (v3)
                    [regression]
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: jairo.daniel.miramontes.caton at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

>> Paulo, I'm not positive that this is the cause of the issues you're
>> seeing, but
>> I did find this unwanted behavior change while re-reading all the SKL
>> watermark
>> code.  Could you give this a try and see if it improves your
>> situation at all?
>
> Thanks for the patch, but unfortunately this doesn't solve the problems
> I'm seeing.
>
> For my normal work activities I'm carrying a patch that reverts the
> following commits:
>
> drm/i915: Calculate watermark configuration during atomic check (v2)
> drm/i915: Don't set plane visible during HW readout if CRTC is off
> drm/i915: Calculate ILK-style watermarks during atomic check (v3)
> drm/i915: Calculate pipe watermarks into CRTC state (v3)
> drm/i915: Refactor ilk_update_wm (v3)
> drm/i915: Drop intel_update_sprite_watermarks
>
> So I guess the sprite update thing is very likely the first bad commit.
> I'm also noticing that the screen stays black for _way_ too much time
> during boot, but I'm not sure it's caused by the watermark series:
> might be something else on -nightly.
>
> Thanks,
> Paulo
>
>>
>>  drivers/gpu/drm/i915/intel_pm.c | 3 +++
>>  1 file changed, 3 insertions(+)
>>
>> diff --git a/drivers/gpu/drm/i915/intel_pm.c
>> b/drivers/gpu/drm/i915/intel_pm.c
>> index 3857592..22c97f2 100644
>> --- a/drivers/gpu/drm/i915/intel_pm.c
>> +++ b/drivers/gpu/drm/i915/intel_pm.c
>> @@ -2951,6 +2951,9 @@ skl_get_total_relative_data_rate(const struct
>> intel_crtc_state *cstate)
>>               if (pstate->fb == NULL)
>>                       continue;
>>
>> +             if (intel_plane->base.type == DRM_PLANE_TYPE_CURSOR)
>> +                     continue;
>> +
>>               /* packed/uv */
>>               total_data_rate +=
>> skl_plane_relative_data_rate(cstate,
>>                                                               psta
>> te,

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