[Intel-gfx] [PATCH 0/7] Misc WM fixes and Arbitrated Display Bandwidth WA for SKL

Matt Roper matthew.d.roper at intel.com
Thu Jan 14 17:48:35 PST 2016

On Thu, Jan 14, 2016 at 05:32:41PM +0530, Shobhit Kumar wrote:
> Hi,
> This series add a set of updates to the WM calculation and also enables
> arbitrated display bandwidth based WA. Some of these patches do overlap
> with Matts work but we wanted to send them out as we have them in our
> internal testing for early review. Most likley some of them can be
> superceded by patches from Matt, or can be re-used if deemed necessary.

I've left some feedback on your patches, but it was all pretty minor;
they look pretty good overall.  So I think we should polish up this set
and merge it; I've got more SKL WM work coming (more atomic-y watermark
calculation and programming) but I'll hold off on that until your series
lands so that I don't cause too much thrash.



> Especially "drm/i915/skl+: Use fb size for relative data rate calculation"
> this already addresses some of Ville's comment on similar patch from Matt.
> Regards
> Shobhit
> Kumar, Mahesh (6):
>   drm/i915/skl+: Use proper bytes_per_pixel during WM calculation
>   drm/i915/skl+: Use fb size for relative data rate calculation
>   drm/i915/skl+: calculate ddb minimum allocation
>   drm/i915/skl+: calculate plane pixel rate.
>   drm/i915/skl+: Use scaling amount for plane data rate calculation
>   drm/i915/skl: WA for watermark calculation based on Arbitrated Display
>     BW
> Shobhit Kumar (1):
>   drm/i915: Add support to parse DMI table and get platform memory info
>  drivers/gpu/drm/i915/i915_dma.c  |  19 +++
>  drivers/gpu/drm/i915/i915_drv.h  |  15 ++
>  drivers/gpu/drm/i915/intel_drv.h |   2 +
>  drivers/gpu/drm/i915/intel_pm.c  | 294 +++++++++++++++++++++++++++++++++++++--
>  4 files changed, 316 insertions(+), 14 deletions(-)
> -- 
> 2.4.3

Matt Roper
Graphics Software Engineer
IoTG Platform Enabling & Development
Intel Corporation
(916) 356-2795

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