[PATCH 14/17] drm/amd/display: use link type to decide stream enc acquisition

[Bhawanpreet Lakha]

From: Eric Yang <Eric.Yang2 at amd.com>

[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 at amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng at amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha at 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 f85fa7b55efb..d981755d1e4d 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
@@ -1762,7 +1762,7 @@ 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;
-- 
2.14.1