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

[Ankit Nautiyal]

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.
Bspec: 50490

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal at intel.com>
---
 drivers/gpu/drm/i915/display/intel_hdmi.c | 11 ++++++++++-
 1 file changed, 10 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..791bfb062c49 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -1990,6 +1990,9 @@ intel_hdmi_mode_valid(struct drm_connector *connector,
 	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
 		return MODE_NO_DBLESCAN;
 
+	if (DISPLAY_VER(dev_priv) >= 12 && mode->flags & DRM_MODE_FLAG_INTERLACE)
+		return MODE_NO_INTERLACE;
+
 	if ((mode->flags & DRM_MODE_FLAG_3D_MASK) == DRM_MODE_FLAG_3D_FRAME_PACKING)
 		clock *= 2;
 
@@ -2247,6 +2250,10 @@ int intel_hdmi_compute_config(struct intel_encoder *encoder,
 	if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)
 		return -EINVAL;
 
+	if (DISPLAY_VER(dev_priv) >= 12 &&
+	    adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE)
+		return -EINVAL;
+
 	pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
 	pipe_config->has_hdmi_sink = intel_has_hdmi_sink(intel_hdmi,
 							 conn_state);
@@ -2956,7 +2963,9 @@ 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