From: Eugeni Dodonov <eugeni.dodonov@intel.com>
Date: Wed, 9 May 2012 18:37:14 +0000 (-0300)
Subject: drm/i915: do not use fdi_normal_train on Haswell
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=f57e1e3a67503927824839996a6efce269281afa;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

drm/i915: do not use fdi_normal_train on Haswell

This should be already configured when FDI auto-negotiation is done.

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 6b93d4a697ed..cc910e69f709 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2679,7 +2679,8 @@ static void ironlake_pch_enable(struct drm_crtc *crtc)
 	I915_WRITE(TRANS_VSYNC(pipe),  I915_READ(VSYNC(pipe)));
 	I915_WRITE(TRANS_VSYNCSHIFT(pipe),  I915_READ(VSYNCSHIFT(pipe)));
 
-	intel_fdi_normal_train(crtc);
+	if (!IS_HASWELL(dev))
+		intel_fdi_normal_train(crtc);
 
 	/* For PCH DP, enable TRANS_DP_CTL */
 	if (HAS_PCH_CPT(dev) &&