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From 65561d03dcc375d5ccc0992694c3eb36923e7bd7 Mon Sep 17 00:00:00 2001
From: Anthony Koo <Anthony.Koo@amd.com>
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 <Anthony.Koo@amd.com>
Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
---
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
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