diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index 7f618cf5289c0..5d20c64d85669 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -675,15 +675,16 @@ void hsw_fdi_link_train(struct drm_crtc *crtc) temp = I915_READ(DP_TP_STATUS(PORT_E)); if (temp & DP_TP_STATUS_AUTOTRAIN_DONE) { DRM_DEBUG_KMS("FDI link training done on step %d\n", i); + break; + } - /* Enable normal pixel sending for FDI */ - I915_WRITE(DP_TP_CTL(PORT_E), - DP_TP_CTL_FDI_AUTOTRAIN | - DP_TP_CTL_LINK_TRAIN_NORMAL | - DP_TP_CTL_ENHANCED_FRAME_ENABLE | - DP_TP_CTL_ENABLE); - - return; + /* + * Leave things enabled even if we failed to train FDI. + * Results in less fireworks from the state checker. + */ + if (i == ARRAY_SIZE(hsw_ddi_translations_fdi) * 2 - 1) { + DRM_ERROR("FDI link training failed!\n"); + break; } temp = I915_READ(DDI_BUF_CTL(PORT_E)); @@ -712,7 +713,12 @@ void hsw_fdi_link_train(struct drm_crtc *crtc) POSTING_READ(FDI_RX_MISC(PIPE_A)); } - DRM_ERROR("FDI link training failed!\n"); + /* Enable normal pixel sending for FDI */ + I915_WRITE(DP_TP_CTL(PORT_E), + DP_TP_CTL_FDI_AUTOTRAIN | + DP_TP_CTL_LINK_TRAIN_NORMAL | + DP_TP_CTL_ENHANCED_FRAME_ENABLE | + DP_TP_CTL_ENABLE); } void intel_ddi_init_dp_buf_reg(struct intel_encoder *encoder)