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drm/amd/display: block DP YCbCr420 modes

Browse source 
[why]
Currently not supported, will black screen when set.

[How]
Fail validate timing helper for those modes.

Signed-off-by: Eric Yang <Eric.Yang2@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Eric Yang 2018-09-14 13:53:14 -04:00 • committed by Alex Deucher
commit b7cd6487a5
2 changed files with 6 additions and 0 deletions
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3
drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c
View file

@ -662,6 +662,9 @@ bool dce110_link_encoder_validate_dp_output(
const struct dce110_link_encoder *enc110,
const struct dc_crtc_timing *crtc_timing)
{
if (crtc_timing->pixel_encoding == PIXEL_ENCODING_YCBCR420)
return false;
/* default RGB only */
if (crtc_timing->pixel_encoding == PIXEL_ENCODING_RGB)
return true;

3
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.c
View file

@ -606,6 +606,9 @@ bool dcn10_link_encoder_validate_dp_output(
const struct dcn10_link_encoder *enc10,
const struct dc_crtc_timing *crtc_timing)
{
if (crtc_timing->pixel_encoding == PIXEL_ENCODING_YCBCR420)
return false;
/* default RGB only */
if (crtc_timing->pixel_encoding == PIXEL_ENCODING_RGB)
return true;