[Intel-gfx] [PATCH v5 08/11] 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.nauti...@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 d97832b8da32..c40d081358f8 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -1570,6 +1570,10 @@ 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