[PATCH] drm/i915/hdmi: Prune Interlaced modes for Display >= 12

[Ankit Nautiyal]

HSDES: 14014095364 Defeature Display Interlace support.
Support for Interlace modes is removed from Gen 12 onwards.
For DP we do not support interlace modes (except for very old
platforms). Pruning the interlaced modes for HDMI for Display >=12.

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal at intel.com>
---
 drivers/gpu/drm/i915/display/intel_hdmi.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 93519fb23d9d..f6dd580f8121 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -1987,6 +1987,9 @@ intel_hdmi_mode_valid(struct drm_connector *connector,
 	bool has_hdmi_sink = intel_has_hdmi_sink(hdmi, connector->state);
 	bool ycbcr_420_only;
 
+	if (DISPLAY_VER(dev_priv) >= 12 && mode->flags & DRM_MODE_FLAG_INTERLACE)
+		return MODE_NO_INTERLACE;
+
 	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
 		return MODE_NO_DBLESCAN;
 
@@ -2956,7 +2959,9 @@ void intel_hdmi_init_connector(struct intel_digital_port *dig_port,
 				    ddc);
 	drm_connector_helper_add(connector, &intel_hdmi_connector_helper_funcs);
 
-	connector->interlace_allowed = true;
+	if (DISPLAY_VER(dev_priv) < 12)
+		connector->interlace_allowed = true;
+
 	connector->stereo_allowed = true;
 
 	if (DISPLAY_VER(dev_priv) >= 10)
-- 
2.25.1