From 65561d03dcc375d5ccc0992694c3eb36923e7bd7 Mon Sep 17 00:00:00 2001 From: Anthony Koo Date: Thu, 7 Feb 2019 20:38:34 -0500 Subject: [PATCH 1310/2940] drm/amd/display: Fix issue with link_active state not correct for MST [Why] For MST, link not disabled until all streams disabled [How] Add check for stream_count before setting link_active = false for MST Signed-off-by: Anthony Koo Reviewed-by: Wenjing Liu Acked-by: Leo Li --- drivers/gpu/drm/amd/display/dc/core/dc_link.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) 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 a5b18cfac326..46e94bdd73a3 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c @@ -2037,6 +2037,9 @@ static enum dc_status enable_link( break; } + if (status == DC_OK) + pipe_ctx->stream->link->link_status.link_active = true; + return status; } @@ -2060,6 +2063,14 @@ static void disable_link(struct dc_link *link, enum signal_type signal) dp_disable_link_phy_mst(link, signal); } else link->link_enc->funcs->disable_output(link->link_enc, signal); + + if (signal == SIGNAL_TYPE_DISPLAY_PORT_MST) { + /* MST disable link only when no stream use the link */ + if (link->mst_stream_alloc_table.stream_count <= 0) + link->link_status.link_active = false; + } else { + link->link_status.link_active = false; + } } static bool dp_active_dongle_validate_timing( @@ -2623,8 +2634,6 @@ void core_link_enable_stream( } } - stream->link->link_status.link_active = true; - core_dc->hwss.enable_audio_stream(pipe_ctx); /* turn off otg test pattern if enable */ @@ -2659,8 +2668,6 @@ void core_link_disable_stream(struct pipe_ctx *pipe_ctx, int option) core_dc->hwss.disable_stream(pipe_ctx, option); disable_link(pipe_ctx->stream->link, pipe_ctx->stream->signal); - - pipe_ctx->stream->link->link_status.link_active = false; } void core_link_set_avmute(struct pipe_ctx *pipe_ctx, bool enable) -- 2.17.1