[PATCH v15 09/11] drm/mediatek: set monitor to DP_SET_POWER_D3 to avoid garbage
From: Bo-Chen Chen <hidden>
Date: 2022-07-27 04:51:05
Also in:
dri-devel, linux-arm-kernel, linux-devicetree, linux-mediatek, lkml
Subsystem:
drm drivers, drm drivers for mediatek, the rest · Maintainers:
David Airlie, Simona Vetter, Chun-Kuang Hu, Philipp Zabel, Linus Torvalds
Set the monitor power state to DP_SET_POWER_D3 to avoid garbage. Signed-off-by: Jitao Shi <redacted> Signed-off-by: Bo-Chen Chen <redacted> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.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 80dd2b999463..637fd535704a 100644
--- a/drivers/gpu/drm/mediatek/mtk_dp.c
+++ b/drivers/gpu/drm/mediatek/mtk_dp.c@@ -1799,6 +1799,11 @@ 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->enabled = false;
--
2.18.0