From 61e499bf05254aca0fab08e2c91643331a15e725 Mon Sep 17 00:00:00 2001 From: Keith Packard Date: Tue, 17 May 2011 16:13:52 -0700 Subject: [PATCH] drm/i915: FDI link training broken on Ironlake by Ivybridge integration Commit 357555c00f8414057f0c12ee3f479f197264123d split out IVB-specific register definitions for FDI link training, but a piece of that commit stopped executing some critical code on Ironlake systems while leaving it running on Sandybridge. Turn that code back on both Ironlake and Sandybridge Signed-off-by: Keith Packard Acked-by: Jesse Barnes --- drivers/gpu/drm/i915/intel_display.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 81ad654f354..455d88578ea 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -2056,12 +2056,12 @@ static void intel_fdi_normal_train(struct drm_crtc *crtc) /* enable normal train */ reg = FDI_TX_CTL(pipe); temp = I915_READ(reg); - if (IS_GEN6(dev)) { - temp &= ~FDI_LINK_TRAIN_NONE; - temp |= FDI_LINK_TRAIN_NONE | FDI_TX_ENHANCE_FRAME_ENABLE; - } else if (IS_IVYBRIDGE(dev)) { + if (IS_IVYBRIDGE(dev)) { temp &= ~FDI_LINK_TRAIN_NONE_IVB; temp |= FDI_LINK_TRAIN_NONE_IVB | FDI_TX_ENHANCE_FRAME_ENABLE; + } else { + temp &= ~FDI_LINK_TRAIN_NONE; + temp |= FDI_LINK_TRAIN_NONE | FDI_TX_ENHANCE_FRAME_ENABLE; } I915_WRITE(reg, temp); -- 2.46.0