drm/i915: Don't set cursor pipe select bits on g4x+

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G4x cursor control registers still allow us to write to the pipe select
bits even though cursors are supposed to be fixed to a specific pipe.
Bspec tells us that we should only ever write 0 to these bits. Let's
follow that recommendation. On ilk+ the bits become hardwired to 0.

Also looks like ICL repurposes these bits for some other use, so
we had better stop setting them to bogus values there.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180130203807.13721-1-ville.syrjala@linux.intel.com
Reviewed-by: Mika Kahola <mika.kahola@intel.com>

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Ville Syrjälä 2018-01-30 22:38:01 +02:00

parent aa81e2c334

commit 32ea06b67e

1 changed files with 2 additions and 1 deletions

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drivers/gpu/drm/i915/intel_display.c

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