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* [PATCH] drm/mediatek: hdmi: Filter interlaced resolutions
@ 2017-01-24  5:10 Bibby Hsieh
  2017-01-24  6:12 ` CK Hu
  2017-05-23  9:28 ` CK Hu
  0 siblings, 2 replies; 7+ messages in thread
From: Bibby Hsieh @ 2017-01-24  5:10 UTC (permalink / raw)
  To: linux-arm-kernel

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>
---
 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)
-- 
1.9.1

^ permalink raw reply related	[flat|nested] 7+ messages in thread

end of thread, other threads:[~2017-05-25  3:38 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2017-01-24  5:10 [PATCH] drm/mediatek: hdmi: Filter interlaced resolutions Bibby Hsieh
2017-01-24  6:12 ` CK Hu
2017-05-23  9:28 ` CK Hu
2017-05-23 13:12   ` Daniel Vetter
2017-05-24  9:20     ` CK Hu
2017-05-24 12:24       ` Daniel Vetter
2017-05-25  3:38         ` CK Hu

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