From: Chiawen Huang chiawen.huang@amd.com
[ Upstream commit 7d56a154e22ffb3613fdebf83ec34d5225a22993 ]
[Why] disable/enable leads FEC mismatch between hw/sw FEC state.
[How] check FEC status to fastboot on/off.
Reviewed-by: Anthony Koo Anthony.Koo@amd.com Acked-by: Alex Hung alex.hung@amd.com Signed-off-by: Chiawen Huang chiawen.huang@amd.com Tested-by: Daniel Wheeler daniel.wheeler@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/amd/display/dc/core/dc.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c index ba1aa994db4b..a62711d71d0e 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -1493,6 +1493,10 @@ bool dc_validate_seamless_boot_timing(const struct dc *dc, if (!link->link_enc->funcs->is_dig_enabled(link->link_enc)) return false;
+ /* Check for FEC status*/ + if (link->link_enc->funcs->fec_is_active(link->link_enc)) + return false; + enc_inst = link->link_enc->funcs->get_dig_frontend(link->link_enc);
if (enc_inst == ENGINE_ID_UNKNOWN)