From 33bd41111bb6599616b411468af4f0315d2ae694 Mon Sep 17 00:00:00 2001
From: Eugeni Dodonov <eugeni.dodonov@intel.com>
Date: Wed, 9 May 2012 20:30:31 -0300
Subject: [PATCH] --- yaml --- r: 307435 b: refs/heads/master c:
 6ee8bab09d515503f9f1d01690840c2bd5f66267 h: refs/heads/master i:   307433:
 1c4860ff182bb6ab33077c210679235d12489f38   307431:
 8bf7526886f532597726a8e9e1ecf6bb5a5cb1c1 v: v3

---
 [refs]                                     |  2 +-
 trunk/drivers/gpu/drm/i915/intel_display.c | 16 ++++++++++++++++
 2 files changed, 17 insertions(+), 1 deletion(-)

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))