drm/i915: Fix HDMI 12bpc TRANSCONF bpc value
IBX BSpec says we must specify 8bpc in TRANSCONF for both 8bpc
and 12bpc HDMI output. Do so.
v2: Pass intel_crtc to intel_pipe_has_type()
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chandra Konduru <Chandra.konduru@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 58846b5..c4ccc37 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2003,11 +2003,15 @@
if (HAS_PCH_IBX(dev_priv->dev)) {
/*
- * make the BPC in transcoder be consistent with
- * that in pipeconf reg.
+ * Make the BPC in transcoder be consistent with
+ * that in pipeconf reg. For HDMI we must use 8bpc
+ * here for both 8bpc and 12bpc.
*/
val &= ~PIPECONF_BPC_MASK;
- val |= pipeconf_val & PIPECONF_BPC_MASK;
+ if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_HDMI))
+ val |= PIPECONF_8BPC;
+ else
+ val |= pipeconf_val & PIPECONF_BPC_MASK;
}
val &= ~TRANS_INTERLACE_MASK;