[PATCH v5 5/8] drm/i915/dp: Avoid DSC with output_format YCBC420

[Ankit Nautiyal]

Currently, DSC with YCBCR420 is not supported.
Return -EINVAL when trying with DSC with output_format as YCBCR420.

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal at intel.com>
---
 drivers/gpu/drm/i915/display/intel_dp.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index d03e047cd3aa..702370b2b6b5 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -1491,6 +1491,10 @@ static int intel_dp_dsc_compute_config(struct intel_dp *intel_dp,
 	if (!intel_dp_supports_dsc(intel_dp, pipe_config))
 		return -EINVAL;
 
+	/* Currently DSC with YCBCR420 format is not supported */
+	if (pipe_config->output_format == INTEL_OUTPUT_FORMAT_YCBCR420)
+		return -EINVAL;
+
 	pipe_bpp = intel_dp_dsc_compute_bpp(intel_dp, conn_state->max_requested_bpc);
 
 	if (intel_dp->force_dsc_bpc) {
-- 
2.25.1