[PATCH 1/9] drm/i915/hdmi: Add missing intel_pfit_mode_valid() for 4:2:0 also modes

[Ville Syrjala <ville.syrjala@linux.intel.com>]

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

intel_hdmi_mode_valid() is calling intel_pfit_mode_valid() only
on the first attempt (4:2:0 for "4:2:0 only" modes, 4:4:4 for
everything else). Add the call also for the "4:2:0 also" modes case
so that we actually know the pipe scaler can actually produce the
4:2:0 output.

Cc: Nicolas Frattaroli <nicolas.frattaroli@collabora.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_hdmi.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 05e898d10a2b..072b0554cc24 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -2079,6 +2079,11 @@ intel_hdmi_mode_valid(struct drm_connector *_connector,
 			return status;
 
 		sink_format = INTEL_OUTPUT_FORMAT_YCBCR420;
+
+		status = intel_pfit_mode_valid(display, mode, sink_format, 0);
+		if (status != MODE_OK)
+			return status;
+
 		status = intel_hdmi_mode_clock_valid(&connector->base, clock, has_hdmi_sink,
 						     sink_format);
 		if (status != MODE_OK)
-- 
2.52.0