[Intel-gfx] [PATCH 4/6] drm/i915/pch: Set transcoder sync polarity for DP based on actual mode

[Adam Jackson]

Signed-off-by: Adam Jackson <ajax at redhat.com>
---
 drivers/gpu/drm/i915/intel_display.c |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index b1b742b..889f4ed 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -1983,9 +1983,12 @@ static void ironlake_crtc_dpms(struct drm_crtc *crtc, int mode)
 				reg = I915_READ(trans_dp_ctl);
 				reg &= ~TRANS_DP_PORT_SEL_MASK;
 				reg = TRANS_DP_OUTPUT_ENABLE |
-				      TRANS_DP_ENH_FRAMING |
-				      TRANS_DP_VSYNC_ACTIVE_HIGH |
-				      TRANS_DP_HSYNC_ACTIVE_HIGH;
+				      TRANS_DP_ENH_FRAMING;
+
+				if (crtc->mode.flags & DRM_MODE_FLAG_PHSYNC)
+				      reg |= TRANS_DP_HSYNC_ACTIVE_HIGH;
+				if (crtc->mode.flags & DRM_MODE_FLAG_PVSYNC)
+				      reg |= TRANS_DP_VSYNC_ACTIVE_HIGH;
 
 				switch (intel_trans_dp_port_sel(crtc)) {
 				case PCH_DP_B:
-- 
1.7.1.1