[PATCH v3 3/5] gpu/drm: mediatek: hdmi: add check for CEA modes only

[Chun-Kuang Hu]

Hi, Neil:

Neil Armstrong <narmstrong at baylibre.com> 於 2021年4月19日 週一 下午3:33寫道：
>
> 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.

Reviewed-by: Chun-Kuang Hu <chunkuang.hu at kernel.org>

>
> Signed-off-by: Fabien Parent <fparent at baylibre.com>
> Signed-off-by: Neil Armstrong <narmstrong at baylibre.com>
> ---
>  drivers/gpu/drm/mediatek/mtk_hdmi.c | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
> index dea46d66e712..0539262e69d3 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)
> --
> 2.25.1
>