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 6b93d4a697ed199135d901fb1b4d31defa77cd90..cc910e69f7097d9b4592cc814235f7b9f57120ff 100644 (file)
--- 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) &&