diff --git a/[refs] b/[refs] index 18e5889dfc55..fb4718687189 100644 --- a/[refs] +++ b/[refs] @@ -1,2 +1,2 @@ --- -refs/heads/master: f57e1e3a67503927824839996a6efce269281afa +refs/heads/master: 6ee8bab09d515503f9f1d01690840c2bd5f66267 diff --git a/trunk/drivers/gpu/drm/i915/intel_display.c b/trunk/drivers/gpu/drm/i915/intel_display.c index cc910e69f709..bb049a178632 100644 --- a/trunk/drivers/gpu/drm/i915/intel_display.c +++ b/trunk/drivers/gpu/drm/i915/intel_display.c @@ -2610,6 +2610,22 @@ static bool intel_crtc_driving_pch(struct drm_crtc *crtc) if (encoder->base.crtc != crtc) continue; + /* On Haswell, LPT PCH handles the VGA connection via FDI, and Haswell + * CPU handles all others */ + if (IS_HASWELL(dev)) { + /* It is still unclear how this will work on PPT, so throw up a warning */ + WARN_ON(!HAS_PCH_LPT(dev)); + + if (encoder->type == DRM_MODE_ENCODER_DAC) { + DRM_DEBUG_KMS("Haswell detected DAC encoder, assuming is PCH\n"); + return true; + } else { + DRM_DEBUG_KMS("Haswell detected encoder %d, assuming is CPU\n", + encoder->type); + return false; + } + } + switch (encoder->type) { case INTEL_OUTPUT_EDP: if (!intel_encoder_is_pch_edp(&encoder->base))