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From 6273338531453a2af2e8d0928e6f9aa63b8c4e3e Mon Sep 17 00:00:00 2001
From: Eric Yang <Eric.Yang2@amd.com>
Date: Fri, 24 Aug 2018 16:54:14 -0400
Subject: [PATCH 0334/2940] drm/amd/display: use link type to decide stream enc
acquisition
[Why]
Virtual sink is used when set mode happens on a disconnected display
to allow the mode set to proceed. This did not work with MST because
the logic for acquiring stream encoder uses stream signal to determine
the special handling is required, and stream signal is virtual instead
of DP in this case.
[How]
Use link type to decide instead.
Change-Id: Ied8056c5cfc035dd313ddb3631bca72442491cd6
Signed-off-by: Eric Yang <Eric.Yang2@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
---
drivers/gpu/drm/amd/display/dc/core/dc_resource.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
index 3d854f9b2aaa..438c18ab1749 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
@@ -1772,7 +1772,7 @@ static struct stream_encoder *find_first_free_match_stream_enc_for_link(
* required for non DP connectors.
*/
- if (j >= 0 && dc_is_dp_signal(stream->signal))
+ if (j >= 0 && link->connector_signal == SIGNAL_TYPE_DISPLAY_PORT)
return pool->stream_enc[j];
return NULL;
--
2.17.1
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