[PATCH v11 08/10] drm/mediatek: set monitor to DP_SET_POWER_D3 to avoid garbage
Bo-Chen Chen
rex-bc.chen at mediatek.com
Fri Jun 10 03:55:20 PDT 2022
Set the monitor power state to DP_SET_POWER_D3 to avoid garbage.
Signed-off-by: Jitao Shi <jitao.shi at mediatek.com>
Signed-off-by: Bo-Chen Chen <rex-bc.chen at mediatek.com>
---
drivers/gpu/drm/mediatek/mtk_dp.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/mediatek/mtk_dp.c b/drivers/gpu/drm/mediatek/mtk_dp.c
index 2413551bfe9f..a5ed94ca00c6 100644
--- a/drivers/gpu/drm/mediatek/mtk_dp.c
+++ b/drivers/gpu/drm/mediatek/mtk_dp.c
@@ -2043,6 +2043,11 @@ static void mtk_dp_bridge_atomic_disable(struct drm_bridge *bridge,
{
struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
+ if (mtk_dp_plug_state(mtk_dp)) {
+ drm_dp_dpcd_writeb(&mtk_dp->aux, DP_SET_POWER, DP_SET_POWER_D3);
+ usleep_range(2000, 3000);
+ }
+
mtk_dp_video_mute(mtk_dp, true);
mtk_dp->train_state = MTK_DP_TRAIN_STATE_TRAINING;
--
2.18.0
More information about the Linux-mediatek
mailing list