drm/amd/display: use correct vpg instance for 128b/132b encoding

[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@amd.com>
Acked-by: Anson Jacob <Anson.Jacob@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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 2bd38d19a447de338c55ddc1411c00f285a9f8cc..cab7993b4cc5a153369cea1cefba688fea62b3b7 100644 (file)
--- 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) &&