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drm/bridge: dw-hdmi: do not force "none" scan mode

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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
This commit is contained in:
Jonas Karlman 2020-03-05 00:25:10 +01:00 committed by Jernej Skrabec
parent 1ef1380ca5
commit 6b633e3efb
1 changed files with 0 additions and 2 deletions
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2
drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
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@ -1648,8 +1648,6 @@ static void hdmi_config_AVI(struct dw_hdmi *hdmi, struct drm_display_mode *mode)
break;
}
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