From: Wenjing Liu <wenjing.liu@xxxxxxx> [why] 128b/132b uses the vpg instance assigned to hpo dp stream encoder. The current vpg used is assigned to dio stream encoder. This is incorrect and cause display black screen because the actual vpg is powered off. Reviewed-by: Michael Strauss <michael.strauss@xxxxxxx> Acked-by: Anson Jacob <Anson.Jacob@xxxxxxx> Signed-off-by: Wenjing Liu <wenjing.liu@xxxxxxx> --- drivers/gpu/drm/amd/display/dc/core/dc_link.c | 6 ++++++ 1 file changed, 6 insertions(+) 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 2bd38d19a447..cab7993b4cc5 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c @@ -3608,6 +3608,9 @@ void core_link_enable_stream( #if defined(CONFIG_DRM_AMD_DC_DCN) enum otg_out_mux_dest otg_out_dest = OUT_MUX_DIO; struct vpg *vpg = pipe_ctx->stream_res.stream_enc->vpg; + + if (is_dp_128b_132b_signal(pipe_ctx)) + vpg = pipe_ctx->stream_res.hpo_dp_stream_enc->vpg; #endif DC_LOGGER_INIT(pipe_ctx->stream->ctx->logger); @@ -3853,6 +3856,9 @@ void core_link_disable_stream(struct pipe_ctx *pipe_ctx) struct dc_link *link = stream->sink->link; #if defined(CONFIG_DRM_AMD_DC_DCN) struct vpg *vpg = pipe_ctx->stream_res.stream_enc->vpg; + + if (is_dp_128b_132b_signal(pipe_ctx)) + vpg = pipe_ctx->stream_res.hpo_dp_stream_enc->vpg; #endif if (!IS_DIAG_DC(dc->ctx->dce_environment) && -- 2.25.1
