Bug 50248

Summary:

[IVB, VLV] cursor lp3 latency correction

Product:

DRI

Reporter:

Jesse Barnes <jbarnes>

Component:

DRM/Intel

Assignee:

Daniel Vetter <daniel>

Status:

CLOSED FIXED

QA Contact:

Intel GFX Bugs mailing list <intel-gfx-bugs>

Severity:

normal

Priority:

medium

CC:

ben, chris, daniel, jbarnes

Version:

XOrg git

Hardware:

Other

OS:

All

Whiteboard:

i915 platform:

i915 features:

Attachments:

Description	Flags
Double cursor latency for IVB lp3	none
Double cursor latency for VLV sr	none

Description Jesse Barnes 2012-05-22 14:53:48 UTC

Should be 2x what we have now.

http://dt.igk.intel.com/wa_database/DetailsView/Show?wa_name_id=1251

Comment 1 Chris Wilson 2012-12-04 09:55:35 UTC

Created attachment 70991 [details] [review]
Double cursor latency for IVB lp3

Comment 2 Chris Wilson 2012-12-04 09:58:13 UTC

Created attachment 70992 [details] [review]
Double cursor latency for VLV sr

Comment 3 Chris Wilson 2012-12-17 11:58:42 UTC

commit af6c4575afada1a9c411e42439b5d40908865b11
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Tue Dec 11 12:01:43 2012 +0000

    drm/i915: Double the cursor self-refresh latency on Valleyview
    
    It operates at twice the declared latency, so double the latency value
    used for the cursor watermark calculation.
    
    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=50248
    Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
    CC: Jesse Barnes <jbarnes@virtuousgeek.org>
    Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
    Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

commit c43d0188d7be6e45eb52a27ed9df714ca2e04e0a
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Tue Dec 11 12:01:42 2012 +0000

    drm/i915: Fixup cursor latency used for IVB lp3 watermarks
    
    It operates at twice the declared latency, so adjust the computation to
    avoid potential flicker at low power.
    
    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=50248
    Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
    CC: Jesse Barnes <jbarnes@virtuousgeek.org>
    Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
    Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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