From: Neil Armstrong <narmstrong@baylibre.com>
Date: Mon, 19 Apr 2021 07:32:42 +0000 (+0200)
Subject: drm/mediatek: hdmi: Add check for CEA modes only
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=41ca9caaae0bfc959b22dbcd59d88a7107707e17;p=linux.git

drm/mediatek: hdmi: Add check for CEA modes only

Some SoCs like the MT8167 are not validated and supported for
HDMI modes out of HDMI CEA modes, so add a configuration boolean
to filter out non-CEA modes.

Signed-off-by: Fabien Parent <fparent@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
---

diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
index dea46d66e712d..0539262e69d39 100644
--- a/drivers/gpu/drm/mediatek/mtk_hdmi.c
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c
@@ -148,6 +148,7 @@ struct hdmi_audio_param {
 
 struct mtk_hdmi_conf {
 	bool tz_disabled;
+	bool cea_modes_only;
 };
 
 struct mtk_hdmi {
@@ -1222,6 +1223,9 @@ static int mtk_hdmi_bridge_mode_valid(struct drm_bridge *bridge,
 			return MODE_BAD;
 	}
 
+	if (hdmi->conf->cea_modes_only && !drm_match_cea_mode(mode))
+		return MODE_BAD;
+
 	if (mode->clock < 27000)
 		return MODE_CLOCK_LOW;
 	if (mode->clock > 297000)