drm/i915: Avoid computing invalid WM levels when sprites/scaling is enabled

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On ILK/SNB only LP0/1 watermarks can be enabled when sprites are
enabled, and on ILK/SNB/IVB sprite scaling is limited to LP0 only.

So we can avoid computing the extra levels we're never going to use.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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Ville Syrjälä 2013-12-05 15:51:30 +02:00 • committed by Daniel Vetter

parent a68d68eebc

commit 7b39a0b791

1 changed files with 8 additions and 0 deletions

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drivers/gpu/drm/i915/intel_pm.c

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