lkml.org 
[lkml]   [2022]   [Jun]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v12 08/10] drm/mediatek: set monitor to DP_SET_POWER_D3 to avoid garbage
Date
Set the monitor power state to DP_SET_POWER_D3 to avoid garbage.

Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
Signed-off-by: Bo-Chen Chen <rex-bc.chen@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 40771ac318e7..92cbcd403a73 100644
--- a/drivers/gpu/drm/mediatek/mtk_dp.c
+++ b/drivers/gpu/drm/mediatek/mtk_dp.c
@@ -2003,6 +2003,11 @@ 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
\
 
 \ /
  Last update: 2022-06-27 10:06    [W:0.120 / U:0.268 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site