drm/i915: clarify IBX dp workaround
authorDaniel Vetter <daniel.vetter@ffwll.ch>
Wed, 30 May 2012 10:31:56 +0000 (12:31 +0200)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Fri, 1 Jun 2012 19:38:59 +0000 (21:38 +0200)
commit493a708179469e3978e50f59902e9d47b6f3dabd
tree00e4d9c27ead91c34c990c7d356730adb89a2ffb
parente269f90f3d3f7c70cf661c660bf445597261f54a
drm/i915: clarify IBX dp workaround

Instead of checking for !CPT, check for IBX to make it clearer that
this is a IBX-specific workaround. No functional change because we
smash the PPT PCH into the HAS_PCH_CPT check and atm DP isn't enabled
on the haswell LPT PCH yet.

See Bspec Vol 3, Part 3, Section 4.[3-5].1 about DP[BCD], bit 30 for
details of this workaround.

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
drivers/gpu/drm/i915/intel_dp.c