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drm/i915: Disallow interlaced modes on g4x DP outputs 

Looks like interlaced DP output doesn't work on g4x either. Not all
that surprising considering we already established that interlaced
DP output is busted on VLV/CHV.

Cc: stable@vger.kernel.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180613160553.11664-1-ville.syrjala@linux.intel.com
(cherry picked from commit 929168c5f3)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Ville Syrjälä 2018-06-13 19:05:52 +03:00 committed by Jani Nikula
parent 4dc055c9cc
commit 1e34f1d368
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/i915/intel_dp.c
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@ -1868,7 +1868,7 @@ intel_dp_compute_config(struct intel_encoder *encoder,
if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)
return false;
if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
if (HAS_GMCH_DISPLAY(dev_priv) &&
adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE)
return false;
@ -6343,7 +6343,7 @@ intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
drm_connector_init(dev, connector, &intel_dp_connector_funcs, type);
drm_connector_helper_add(connector, &intel_dp_connector_helper_funcs);
if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv))
if (!HAS_GMCH_DISPLAY(dev_priv))
connector->interlace_allowed = true;
connector->doublescan_allowed = 0;