drm/i915: Configure SKL+ scaler initial phase correctly

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Set up the SKL+ scaler initial phase registers correctly. Otherwise
we start fetching the data from the center of the first pixel instead
of the top-left corner, which obviously then leads to right/bottom edges
replicating data excessively as the data runs out half a pixel too soon.

Cc: Vidya Srinivas <vidya.srinivas@intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180521185613.5097-2-ville.syrjala@linux.intel.com
Reviewed-By: Vidya Srinivas <vidya.srinivas@intel.com>

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This commit is contained in:

Ville Syrjälä 2018-05-21 21:56:13 +03:00

parent 012d79e6a3

commit 0a59952b24

4 changed files with 70 additions and 2 deletions

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4

drivers/gpu/drm/i915/i915_reg.h

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41

drivers/gpu/drm/i915/intel_display.c

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1

drivers/gpu/drm/i915/intel_drv.h

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26

drivers/gpu/drm/i915/intel_sprite.c

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