From 697ebc319b942403a6fee894607fd2cd47cca069 Mon Sep 17 00:00:00 2001
From: Chris Morgan <macromorgan@hotmail.com>
Date: Fri, 17 Nov 2023 14:25:32 -0600
Subject: [PATCH] drm/panel: nv3051d: Hold panel in reset for unprepare
Improve the panel's ability to restore from suspend by holding the
panel in suspend after unprepare.
Fixes: b1d39f0f4264 ("drm/panel: Add NewVision NV3051D MIPI-DSI LCD panel")
Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Reviewed-by: Jessica Zhang <quic_jesszhan@quicinc.com>
Link: https://lore.kernel.org/r/20231117202536.1387815-3-macroalpha82@gmail.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20231117202536.1387815-3-macroalpha82@gmail.com
---
drivers/gpu/drm/panel/panel-newvision-nv3051d.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/panel/panel-newvision-nv3051d.c b/drivers/gpu/drm/panel/panel-newvision-nv3051d.c
index 79de6c886292b..c44c6945662f2 100644
--- a/drivers/gpu/drm/panel/panel-newvision-nv3051d.c
+++ b/drivers/gpu/drm/panel/panel-newvision-nv3051d.c
@@ -261,6 +261,8 @@ static int panel_nv3051d_unprepare(struct drm_panel *panel)
usleep_range(10000, 15000);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+
regulator_disable(ctx->vdd);
return 0;
--
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