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drm/panel: Don't init gpio value at probe

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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>
This commit is contained in:
Mark Yao
2016-08-02 15:19:27 +08:00
committed by Huang, Tao
parent 471689509e
commit 24dfd90947
1 changed files with 3 additions and 4 deletions
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7
drivers/gpu/drm/panel/panel-simple.c
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@@ -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);