[PATCH] drm/mediatek: hdmi: Filter interlaced resolutions

CK Hu
2017-01-24T06:12:45Z

Hi, Bibby:

On Tue, 2017-01-24 at 13:10 +0800, Bibby Hsieh wrote:
> Current Mediatek DRM driver does not support interlaced mode, and
> will hang if such resolution is used: Filter those to prevent
> kernel hangs, until the DRM driver is fixed properly.
>
> Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com>

Acked-by: CK Hu <ck.hu@mediatek.com>

> ---
> drivers/gpu/drm/mediatek/mtk_hdmi.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
> index 0e8c4d9..e33678d 100644
> --- a/drivers/gpu/drm/mediatek/mtk_hdmi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c
> @@ -1244,6 +1244,8 @@ static int mtk_hdmi_conn_mode_valid(struct drm_connector *conn,
> return MODE_BAD;
> }
>
> + if (mode->flags & DRM_MODE_FLAG_INTERLACE)
> + return MODE_NO_INTERLACE;
> if (mode->clock < 27000)
> return MODE_CLOCK_LOW;
> if (mode->clock > 297000)