From eed928dcd83ee8c80fa05013bbc019bc9e9e2a0e Mon Sep 17 00:00:00 2001 From: Charlene Liu Date: Mon, 29 Apr 2019 14:35:01 -0400 Subject: drm/amd/display: enabling stream after HPD low to high happened [Why] 1. No real HPD plug in/out but HPD happens, the driver notifies OS connection changed. 2. No display in target. When HPD goes low to high, the driver should regard as HPD and enter setmode flow. [How] In this case, even stream didn't change but still retrain. Signed-off-by: Chiawen Huang Signed-off-by: Charlene Liu Reviewed-by: Tony Cheng Acked-by: Anthony Koo Acked-by: Bhawanpreet Lakha Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/core/dc_link.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/gpu/drm/amd/display/dc/core/dc_link.c') 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 9fbf926d5bf9..6b8dc72a7861 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c @@ -704,6 +704,7 @@ bool dc_link_detect(struct dc_link *link, enum dc_detect_reason reason) if (new_connection_type != dc_connection_none) { link->type = new_connection_type; + link->link_state_valid = false; /* From Disconnected-to-Connected. */ switch (link->connector_signal) { @@ -2631,6 +2632,8 @@ void core_link_enable_stream( stream->phy_pix_clk, pipe_ctx->stream_res.audio != NULL); + pipe_ctx->stream->link->link_state_valid = true; + if (dc_is_dvi_signal(pipe_ctx->stream->signal)) pipe_ctx->stream_res.stream_enc->funcs->dvi_set_stream_attribute( pipe_ctx->stream_res.stream_enc, -- cgit