[PATCH v2 08/10] drm/panel: simple: Remove enabled/prepared state

[Sean Paul]

They're not necessary for atomic drivers, and drm_panel will
WARN if the calls are unbalanced

Signed-off-by: Sean Paul <seanpaul at chromium.org>
---
 drivers/gpu/drm/panel/panel-simple.c | 24 ------------------------
 1 file changed, 24 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index a3c96d2ea41c..0e1fbca811a0 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -77,8 +77,6 @@ struct panel_desc {
 
 struct panel_simple {
 	struct drm_panel base;
-	bool prepared;
-	bool enabled;
 
 	const struct panel_desc *desc;
 
@@ -163,9 +161,6 @@ static int panel_simple_disable(struct drm_panel *panel)
 {
 	struct panel_simple *p = to_panel_simple(panel);
 
-	if (!p->enabled)
-		return 0;
-
 	if (p->backlight) {
 		p->backlight->props.power = FB_BLANK_POWERDOWN;
 		p->backlight->props.state |= BL_CORE_FBBLANK;
@@ -175,8 +170,6 @@ static int panel_simple_disable(struct drm_panel *panel)
 	if (p->desc->delay.disable)
 		msleep(p->desc->delay.disable);
 
-	p->enabled = false;
-
 	return 0;
 }
 
@@ -184,9 +177,6 @@ static int panel_simple_unprepare(struct drm_panel *panel)
 {
 	struct panel_simple *p = to_panel_simple(panel);
 
-	if (!p->prepared)
-		return 0;
-
 	gpiod_set_value_cansleep(p->enable_gpio, 0);
 
 	regulator_disable(p->supply);
@@ -194,8 +184,6 @@ static int panel_simple_unprepare(struct drm_panel *panel)
 	if (p->desc->delay.unprepare)
 		msleep(p->desc->delay.unprepare);
 
-	p->prepared = false;
-
 	return 0;
 }
 
@@ -204,9 +192,6 @@ static int panel_simple_prepare(struct drm_panel *panel)
 	struct panel_simple *p = to_panel_simple(panel);
 	int err;
 
-	if (p->prepared)
-		return 0;
-
 	err = regulator_enable(p->supply);
 	if (err < 0) {
 		dev_err(panel->dev, "failed to enable supply: %d\n", err);
@@ -218,8 +203,6 @@ static int panel_simple_prepare(struct drm_panel *panel)
 	if (p->desc->delay.prepare)
 		msleep(p->desc->delay.prepare);
 
-	p->prepared = true;
-
 	return 0;
 }
 
@@ -227,9 +210,6 @@ static int panel_simple_enable(struct drm_panel *panel)
 {
 	struct panel_simple *p = to_panel_simple(panel);
 
-	if (p->enabled)
-		return 0;
-
 	if (p->desc->delay.enable)
 		msleep(p->desc->delay.enable);
 
@@ -239,8 +219,6 @@ static int panel_simple_enable(struct drm_panel *panel)
 		backlight_update_status(p->backlight);
 	}
 
-	p->enabled = true;
-
 	return 0;
 }
 
@@ -301,8 +279,6 @@ static int panel_simple_probe(struct device *dev, const struct panel_desc *desc)
 	if (!panel)
 		return -ENOMEM;
 
-	panel->enabled = false;
-	panel->prepared = false;
 	panel->desc = desc;
 
 	panel->supply = devm_regulator_get(dev, "power");
-- 
2.15.0.rc0.271.g36b669edcc-goog