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>
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@ -1914,7 +1914,7 @@ intel_dp_link_down(struct intel_dp *intel_dp)
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DP |= DP_LINK_TRAIN_OFF;
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DP |= DP_LINK_TRAIN_OFF;
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}
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}
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if (!HAS_PCH_CPT(dev) &&
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if (HAS_PCH_IBX(dev) &&
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I915_READ(intel_dp->output_reg) & DP_PIPEB_SELECT) {
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I915_READ(intel_dp->output_reg) & DP_PIPEB_SELECT) {
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struct drm_crtc *crtc = intel_dp->base.base.crtc;
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struct drm_crtc *crtc = intel_dp->base.base.crtc;
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