drm/i915/bdw: check DPD on port D when setting the DDI buffers

Use the eDP values on platforms where port D is eDP. This doesn't
affect Haswell since it uses the same DDI buffer values for eDP and
DP.

Reviewed-by: Art Runyan <arthur.j.runyan@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 87c55c7cb096..1591576a6101 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -170,9 +170,14 @@ static void intel_prepare_ddi_buffers(struct drm_device *dev, enum port port)
                 break;
         case PORT_B:
         case PORT_C:
-        case PORT_D:
                 ddi_translations = ddi_translations_dp;
                 break;
+        case PORT_D:
+                if (intel_dpd_is_edp(dev))
+                        ddi_translations = ddi_translations_edp;
+                else
+                        ddi_translations = ddi_translations_dp;
+                break;
         case PORT_E:
                 ddi_translations = ddi_translations_fdi;
                 break;