From: Samson Tam <samson....@amd.com>
[ Upstream commit efbde23a3b0164cef27fd394e7d548f46af5b51d ]
[Why]
dongle_type is set during dongle connection but for passive dongles,
dongle_type is not set. If user starts with an active dongle and
then switches to a passive dongle, it will still report as an active
dongle. Trying to emulate the wrong connecter type results in display
not lighting up.
[How]
Set dpcd_caps.dongle_type for passive dongles in detect_dp().
Signed-off-by: Samson Tam <samson....@amd.com>
Reviewed-by: Joshua Aberback <joshua.aberb...@amd.com>
Acked-by: Eryk Brol <eryk.b...@amd.com>
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
drivers/gpu/drm/amd/display/dc/core/dc_link.c | 1 +
1 file changed, 1 insertion(+)
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 bdddb46727b1f..885beb0bcc199 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -767,6 +767,7 @@ static bool detect_dp(struct dc_link *link,
sink_caps->signal = dp_passive_dongle_detection(link->ddc,
sink_caps,
audio_support);
+ link->dpcd_caps.dongle_type = sink_caps->dongle_type;
}
return true;
--
2.25.1
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