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From 785c046c06e1a7822c5883334ca611cf5236258f Mon Sep 17 00:00:00 2001
From: Nikola Cornij <nikola.cornij@amd.com>
Date: Wed, 12 Sep 2018 15:17:51 -0400
Subject: [PATCH 0447/2940] drm/amd/display: Add a check-function for virtual
 signal type

[why]
Same functions exist for all other signal types.

[how]
Add a function that checks against virtual signal type.

Signed-off-by: Nikola Cornij <nikola.cornij@amd.com>
Reviewed-by: Leo Li <sunpeng.li@amd.com>
---
 drivers/gpu/drm/amd/display/include/signal_types.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/include/signal_types.h b/drivers/gpu/drm/amd/display/include/signal_types.h
index 03476b142d8e..f56d2891475f 100644
--- a/drivers/gpu/drm/amd/display/include/signal_types.h
+++ b/drivers/gpu/drm/amd/display/include/signal_types.h
@@ -102,4 +102,9 @@ static inline bool dc_is_audio_capable_signal(enum signal_type signal)
 		dc_is_hdmi_signal(signal));
 }
 
+static inline bool dc_is_virtual_signal(enum signal_type signal)
+{
+	return (signal == SIGNAL_TYPE_VIRTUAL);
+}
+
 #endif
-- 
2.17.1