drm/i915/skl+: Optimize WM calculation

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Plane configuration parameters doesn't change for each WM-level
calculation. Currently we compute same parameters 8 times for each
wm-level.
This patch optimizes it by calculating these parameters in beginning
& reuse during each level-wm calculation.

Changes since V1:
 - rebase on top of Rodrigo's series for CNL

Signed-off-by: Mahesh Kumar <mahesh1.kumar@intel.com>
Acked-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170817134529.2839-3-mahesh1.kumar@intel.com

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Kumar, Mahesh 2017-08-17 19:15:23 +05:30 • committed by Maarten Lankhorst

parent 0b4d7cbff2

commit 7e452fdbfc

2 changed files with 119 additions and 85 deletions

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14

drivers/gpu/drm/i915/i915_drv.h

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218

drivers/gpu/drm/i915/intel_pm.c

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