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 dea46d66e712db7e4b39ddd2ab08530feda1d300..0539262e69d3981fd5f67555330710fc10ff6402 100644 (file)
--- 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)