From: David Heidelberg <david@ixit.cz>

Recently we documented, there is more than vddio regulator, adapt the
driver to work with VCI and POC regulator.

Signed-off-by: David Heidelberg <david@ixit.cz>
---
 drivers/gpu/drm/panel/panel-samsung-sofef00.c | 28 ++++++++++++++++-----------
 1 file changed, 17 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-samsung-sofef00.c b/drivers/gpu/drm/panel/panel-samsung-sofef00.c
index c88574ea66e1c..3097040e6bfa0 100644
--- a/drivers/gpu/drm/panel/panel-samsung-sofef00.c
+++ b/drivers/gpu/drm/panel/panel-samsung-sofef00.c
@@ -20,10 +20,16 @@
 struct sofef00_panel {
 	struct drm_panel panel;
 	struct mipi_dsi_device *dsi;
-	struct regulator *supply;
+	struct regulator_bulk_data *supplies;
 	struct gpio_desc *reset_gpio;
 };
 
+static const struct regulator_bulk_data sofef00_supplies[] = {
+	{ .supply = "vddio" },
+	{ .supply = "vci" },
+	{ .supply = "poc" },
+};
+
 static inline
 struct sofef00_panel *to_sofef00_panel(struct drm_panel *panel)
 {
@@ -86,20 +92,18 @@ static int sofef00_panel_off(struct sofef00_panel *ctx)
 static int sofef00_panel_prepare(struct drm_panel *panel)
 {
 	struct sofef00_panel *ctx = to_sofef00_panel(panel);
-	struct device *dev = &ctx->dsi->dev;
 	int ret;
 
-	ret = regulator_enable(ctx->supply);
-	if (ret < 0) {
-		dev_err(dev, "Failed to enable regulator: %d\n", ret);
+	ret = regulator_bulk_enable(ARRAY_SIZE(sofef00_supplies), ctx->supplies);
+	if (ret < 0)
 		return ret;
-	}
 
 	sofef00_panel_reset(ctx);
 
 	ret = sofef00_panel_on(ctx);
 	if (ret < 0) {
 		gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+		regulator_bulk_disable(ARRAY_SIZE(sofef00_supplies), ctx->supplies);
 		return ret;
 	}
 
@@ -111,7 +115,7 @@ static int sofef00_panel_unprepare(struct drm_panel *panel)
 	struct sofef00_panel *ctx = to_sofef00_panel(panel);
 
 	sofef00_panel_off(ctx);
-	regulator_disable(ctx->supply);
+	regulator_bulk_disable(ARRAY_SIZE(sofef00_supplies), ctx->supplies);
 
 	return 0;
 }
@@ -197,10 +201,12 @@ static int sofef00_panel_probe(struct mipi_dsi_device *dsi)
 	if (IS_ERR(ctx))
 		return PTR_ERR(ctx);
 
-	ctx->supply = devm_regulator_get(dev, "vddio");
-	if (IS_ERR(ctx->supply))
-		return dev_err_probe(dev, PTR_ERR(ctx->supply),
-				     "Failed to get vddio regulator\n");
+	ret = devm_regulator_bulk_get_const(dev,
+					    ARRAY_SIZE(sofef00_supplies),
+					    sofef00_supplies,
+					    &ctx->supplies);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to get regulators\n");
 
 	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
 	if (IS_ERR(ctx->reset_gpio))

-- 
2.51.0