openwrt/target/linux/d1/patches-6.1/0108-drm-panel-cwd686-Add-regulators.patch

From 979271f803c1578087a965a2a4b845c87e7d922f Mon Sep 17 00:00:00 2001
From: Samuel Holland <samuel@sholland.org>
Date: Sun, 7 Aug 2022 19:14:21 -0500
Subject: [PATCH 108/117] drm: panel: cwd686: Add regulators

Signed-off-by: Samuel Holland <samuel@sholland.org>
---
 .../gpu/drm/panel/panel-clockwork-cwd686.c    | 26 ++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

--- a/drivers/gpu/drm/panel/panel-clockwork-cwd686.c
+++ b/drivers/gpu/drm/panel/panel-clockwork-cwd686.c
@@ -20,7 +20,8 @@
 struct cwd686 {
 	struct device *dev;
 	struct drm_panel panel;
-	struct regulator *supply;
+	struct regulator *iovcc;
+	struct regulator *vci;
 	struct gpio_desc *enable_gpio;
 	struct gpio_desc *reset_gpio;
 	struct backlight_device *backlight;
@@ -279,6 +280,9 @@ static int cwd686_unprepare(struct drm_p
 
 	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
 
+	regulator_disable(ctx->vci);
+	regulator_disable(ctx->iovcc);
+
 	ctx->prepared = false;
 
 	return 0;
@@ -293,6 +297,18 @@ static int cwd686_prepare(struct drm_pan
 	if (ctx->prepared)
 		return 0;
 
+	err = regulator_enable(ctx->iovcc);
+	if (err) {
+		dev_err(ctx->dev, "failed to enable iovcc (%d)\n", err);
+		return err;
+	}
+
+	err = regulator_enable(ctx->vci);
+	if (err) {
+		dev_err(ctx->dev, "failed to enable vci (%d)\n", err);
+		return err;
+	}
+
 	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
 	/* T2 */
 	msleep(10);
@@ -402,6 +418,14 @@ static int cwd686_probe(struct mipi_dsi_
 		return err;
 	}
 
+	ctx->iovcc = devm_regulator_get(dev, "iovcc");
+	if (IS_ERR(ctx->iovcc))
+		return PTR_ERR(ctx->iovcc);
+
+	ctx->vci = devm_regulator_get(dev, "vci");
+	if (IS_ERR(ctx->vci))
+		return PTR_ERR(ctx->vci);
+
 	ctx->backlight = devm_of_find_backlight(dev);
 	if (IS_ERR(ctx->backlight))
 		return PTR_ERR(ctx->backlight);