From: Zhan liu Date: Thu, 17 Oct 2019 18:55:56 +0000 (-0400) Subject: drm/amd/display: setting the DIG_MODE to the correct value. X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=967a3b85bac91c55eff740e61bf270c2732f48b2;p=linux.git drm/amd/display: setting the DIG_MODE to the correct value. [Why] This patch is for fixing Navi14 HDMI display pink screen issue. [How] Call stream->link->link_enc->funcs->setup twice. This is setting the DIG_MODE to the correct value after having been overridden by the call to transmitter control. Signed-off-by: Zhan Liu Reviewed-by: Nicholas Kazlauskas Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c index 9350536641601..45331c45a51c3 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c @@ -2842,6 +2842,15 @@ void core_link_enable_stream( CONTROLLER_DP_TEST_PATTERN_VIDEOMODE, COLOR_DEPTH_UNDEFINED); + /* This second call is needed to reconfigure the DIG + * as a workaround for the incorrect value being applied + * from transmitter control. + */ + if (!dc_is_virtual_signal(pipe_ctx->stream->signal)) + stream->link->link_enc->funcs->setup( + stream->link->link_enc, + pipe_ctx->stream->signal); + #ifdef CONFIG_DRM_AMD_DC_DSC_SUPPORT if (pipe_ctx->stream->timing.flags.DSC) { if (dc_is_dp_signal(pipe_ctx->stream->signal) ||