From 34680066e160960d87a3e6e1f9cfa3331444c9e8 Mon Sep 17 00:00:00 2001
From: Jonas Karlman <jonas@kwiboo.se>
Date: Thu, 5 Mar 2020 00:25:10 +0100
Subject: drm/bridge: dw-hdmi: do not force "none" scan mode
Git-commit: 6b633e3efbb45b574bdd803ebdddc8e010758a95
Patch-mainline: v5.8-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322
Setting scan mode to "none" confuses some TVs like LG B8, which randomly
change overscan percentage over time. Digital outputs like HDMI and DVI,
handled by this controller, don't really need overscan, so we can always
set scan mode to underscan. Actually, this is exactly what
drm_hdmi_avi_infoframe_from_display_mode() already does, so we can just
remove offending line.
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
[updated commit message]
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20200304232512.51616-3-jernej.skrabec@siol.net
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index 383b1073d7de..cb4d7bed2d9c 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -1654,8 +1654,6 @@ static void hdmi_config_AVI(struct dw_hdmi *hdmi, struct drm_display_mode *mode)
HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
}
- frame.scan_mode = HDMI_SCAN_MODE_NONE;
-
/*
* The Designware IP uses a different byte format from standard
* AVI info frames, though generally the bits are in the correct
--
2.28.0