From 24dfd909472253916266b8658dcce6043360bad9 Mon Sep 17 00:00:00 2001
From: Mark Yao <mark.yao@rock-chips.com>
Date: Tue, 2 Aug 2016 15:19:27 +0800
Subject: [PATCH] drm/panel: Don't init gpio value at probe
When enable display on loader, init gpio would change gpio status,
that would make screen flash,
Change-Id: I4b69a8d3d83c5bef09014c2134abaee6522a7046
Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
---
drivers/gpu/drm/panel/panel-simple.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index c7c5d15240a4..51fd0abd13ce 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -200,7 +200,7 @@ static int panel_simple_unprepare(struct drm_panel *panel)
return 0;
if (p->enable_gpio)
- gpiod_set_value_cansleep(p->enable_gpio, 0);
+ gpiod_direction_output(p->enable_gpio, 0);
regulator_disable(p->supply);
@@ -227,7 +227,7 @@ static int panel_simple_prepare(struct drm_panel *panel)
}
if (p->enable_gpio)
- gpiod_set_value_cansleep(p->enable_gpio, 1);
+ gpiod_direction_output(p->enable_gpio, 1);
if (p->desc && p->desc->delay.prepare)
msleep(p->desc->delay.prepare);
@@ -329,8 +329,7 @@ static int panel_simple_probe(struct device *dev, const struct panel_desc *desc)
if (IS_ERR(panel->supply))
return PTR_ERR(panel->supply);
- panel->enable_gpio = devm_gpiod_get_optional(dev, "enable",
- GPIOD_OUT_LOW);
+ panel->enable_gpio = devm_gpiod_get_optional(dev, "enable", 0);
if (IS_ERR(panel->enable_gpio)) {
err = PTR_ERR(panel->enable_gpio);
dev_err(dev, "failed to request GPIO: %d\n", err);
--
2.34.1