From: Ville Syrjälä Date: Tue, 5 May 2015 14:17:31 +0000 (+0300) Subject: drm/i915: Fix DP enhanced framing for CPT X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=e3ef4479bb05dce255750ff10ec97c8675c0771b;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git drm/i915: Fix DP enhanced framing for CPT Currently we're always enabling enhanced framing on CPT even if the sink doesn't support it. Fix this up by actaully looking at what the sink tells us. Signed-off-by: Ville Syrjälä Reviewed-by: Jesse Barnes Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 268043f65dd8..52de4110c8e9 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -4168,8 +4168,7 @@ static void ironlake_pch_enable(struct drm_crtc *crtc) temp &= ~(TRANS_DP_PORT_SEL_MASK | TRANS_DP_SYNC_MASK | TRANS_DP_BPC_MASK); - temp |= (TRANS_DP_OUTPUT_ENABLE | - TRANS_DP_ENH_FRAMING); + temp |= TRANS_DP_OUTPUT_ENABLE; temp |= bpc << 9; /* same format but at 11:9 */ if (crtc->mode.flags & DRM_MODE_FLAG_PHSYNC) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 227e77ed879b..d86e1f951666 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -1582,7 +1582,16 @@ static void intel_dp_prepare(struct intel_encoder *encoder) intel_dp->DP |= crtc->pipe << 29; } else if (HAS_PCH_CPT(dev) && port != PORT_A) { + u32 trans_dp; + intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; + + trans_dp = I915_READ(TRANS_DP_CTL(crtc->pipe)); + if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) + trans_dp |= TRANS_DP_ENH_FRAMING; + else + trans_dp &= ~TRANS_DP_ENH_FRAMING; + I915_WRITE(TRANS_DP_CTL(crtc->pipe), trans_dp); } else { if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev)) intel_dp->DP |= intel_dp->color_range;