[PATCH 04/13] drm/i915/dp: Configure PCON for conversion of output_format to YCbCr444

[Ankit Nautiyal]

Handle the case with DP to HDMI PCON, where sink_format is set to YCbCr444.
In that case PCON is required to be configured to convert from given
output_format to YCbCR444.

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal at intel.com>
---
 drivers/gpu/drm/i915/display/intel_dp.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 837532952936..c3f3003c52ca 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -2862,6 +2862,22 @@ void intel_dp_configure_protocol_converter(struct intel_dp *intel_dp,
 			MISSING_CASE(crtc_state->output_format);
 			break;
 		}
+	} else if (crtc_state->sink_format == INTEL_OUTPUT_FORMAT_YCBCR444) {
+		switch (crtc_state->output_format) {
+		case INTEL_OUTPUT_FORMAT_YCBCR420:
+			drm_WARN(&i915->drm,
+				 crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420,
+				 "Cannot convert YCbCr420->YCbCr444\n");
+			break;
+		case INTEL_OUTPUT_FORMAT_YCBCR444:
+			break;
+		case INTEL_OUTPUT_FORMAT_RGB:
+			rgb_to_ycbcr = true;
+			break;
+		default:
+			MISSING_CASE(crtc_state->output_format);
+			break;
+		}
 	}
 
 	tmp = ycbcr444_to_420 ? DP_CONVERSION_TO_YCBCR420_ENABLE : 0;
-- 
2.25.1