diff options
| author | Wenjing Liu <Wenjing.Liu@amd.com> | 2019-09-03 17:15:48 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-10-10 19:24:39 -0500 |
| commit | ef5a7d266e828e45b88cbbc36f69b2d12464375c (patch) | |
| tree | b82e8c65805eb2c01cc6728337a6618c0a786f4d | |
| parent | 1cb1d47741bf02d7fd570aab11103041cd512a5d (diff) | |
drm/amd/display: skip enable stream on disconnected display
[why]
Virtual signal means there is no display attached.
In this case we will assign a virtual signal type to the stream.
We should only enable the front end of the stream but not the back end.
[how]
When stream is enabling with virtual signal type, skip backend programming.
Signed-off-by: Wenjing Liu <Wenjing.Liu@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link.c | 8 |
1 files changed, 8 insertions, 0 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 152c564a8344..c2688efe1f81 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c @@ -2718,6 +2718,10 @@ void core_link_enable_stream( enum dc_status status; DC_LOGGER_INIT(pipe_ctx->stream->ctx->logger); + if (!IS_FPGA_MAXIMUS_DC(core_dc->ctx->dce_environment) && + dc_is_virtual_signal(pipe_ctx->stream->signal)) + return; + if (!dc_is_virtual_signal(pipe_ctx->stream->signal)) { stream->link->link_enc->funcs->setup( stream->link->link_enc, @@ -2860,6 +2864,10 @@ void core_link_disable_stream(struct pipe_ctx *pipe_ctx) struct dc_stream_state *stream = pipe_ctx->stream; struct dc_link *link = stream->sink->link; + if (!IS_FPGA_MAXIMUS_DC(core_dc->ctx->dce_environment) && + dc_is_virtual_signal(pipe_ctx->stream->signal)) + return; + #if defined(CONFIG_DRM_AMD_DC_HDCP) update_psp_stream_config(pipe_ctx, true); #endif |