Commit 493a7081 authored by Daniel Vetter's avatar Daniel Vetter
Browse files

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: default avatarChris Wilson <>
Signed-Off-by: default avatarDaniel Vetter <>
parent e269f90f
......@@ -1914,7 +1914,7 @@ intel_dp_link_down(struct intel_dp *intel_dp)
if (!HAS_PCH_CPT(dev) &&
if (HAS_PCH_IBX(dev) &&
I915_READ(intel_dp->output_reg) & DP_PIPEB_SELECT) {
struct drm_crtc *crtc = intel_dp->base.base.crtc;
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