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drm/i915: Fix HDMI 12bpc TRANSCONF bpc value

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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>
This commit is contained in:
Ville Syrjälä 2015-05-05 17:06:22 +03:00 committed by Daniel Vetter
parent 12aa32905d
commit c5de7c6f3b
1 changed files with 7 additions and 3 deletions
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10
drivers/gpu/drm/i915/intel_display.c
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@ -2003,11 +2003,15 @@ static void ironlake_enable_pch_transcoder(struct drm_i915_private *dev_priv,
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;