1 files changed, 124 insertions, 0 deletions
diff --git a/roms/u-boot/drivers/video/simple_panel.c b/roms/u-boot/drivers/video/simple_panel.c
new file mode 100644
index 000000000..c8f7022ea
--- /dev/null
+++ b/roms/u-boot/drivers/video/simple_panel.c
@@ -0,0 +1,124 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2016 Google, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ */
+
+#include <common.h>
+#include <backlight.h>
+#include <dm.h>
+#include <log.h>
+#include <panel.h>
+#include <asm/gpio.h>
+#include <power/regulator.h>
+
+struct simple_panel_priv {
+	struct udevice *reg;
+	struct udevice *backlight;
+	struct gpio_desc enable;
+};
+
+static int simple_panel_enable_backlight(struct udevice *dev)
+{
+	struct simple_panel_priv *priv = dev_get_priv(dev);
+	int ret;
+
+	debug("%s: start, backlight = '%s'\n", __func__, priv->backlight->name);
+	dm_gpio_set_value(&priv->enable, 1);
+	ret = backlight_enable(priv->backlight);
+	debug("%s: done, ret = %d\n", __func__, ret);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static int simple_panel_set_backlight(struct udevice *dev, int percent)
+{
+	struct simple_panel_priv *priv = dev_get_priv(dev);
+	int ret;
+
+	debug("%s: start, backlight = '%s'\n", __func__, priv->backlight->name);
+	dm_gpio_set_value(&priv->enable, 1);
+	ret = backlight_set_brightness(priv->backlight, percent);
+	debug("%s: done, ret = %d\n", __func__, ret);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static int simple_panel_of_to_plat(struct udevice *dev)
+{
+	struct simple_panel_priv *priv = dev_get_priv(dev);
+	int ret;
+
+	if (IS_ENABLED(CONFIG_DM_REGULATOR)) {
+		ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev,
+						   "power-supply", &priv->reg);
+		if (ret) {
+			debug("%s: Warning: cannot get power supply: ret=%d\n",
+			      __func__, ret);
+			if (ret != -ENOENT)
+				return ret;
+		}
+	}
+	ret = uclass_get_device_by_phandle(UCLASS_PANEL_BACKLIGHT, dev,
+					   "backlight", &priv->backlight);
+	if (ret) {
+		debug("%s: Cannot get backlight: ret=%d\n", __func__, ret);
+		return log_ret(ret);
+	}
+	ret = gpio_request_by_name(dev, "enable-gpios", 0, &priv->enable,
+				   GPIOD_IS_OUT);
+	if (ret) {
+		debug("%s: Warning: cannot get enable GPIO: ret=%d\n",
+		      __func__, ret);
+		if (ret != -ENOENT)
+			return log_ret(ret);
+	}
+
+	return 0;
+}
+
+static int simple_panel_probe(struct udevice *dev)
+{
+	struct simple_panel_priv *priv = dev_get_priv(dev);
+	int ret;
+
+	if (IS_ENABLED(CONFIG_DM_REGULATOR) && priv->reg) {
+		debug("%s: Enable regulator '%s'\n", __func__, priv->reg->name);
+		ret = regulator_set_enable(priv->reg, true);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static const struct panel_ops simple_panel_ops = {
+	.enable_backlight	= simple_panel_enable_backlight,
+	.set_backlight		= simple_panel_set_backlight,
+};
+
+static const struct udevice_id simple_panel_ids[] = {
+	{ .compatible = "simple-panel" },
+	{ .compatible = "auo,b133xtn01" },
+	{ .compatible = "auo,b116xw03" },
+	{ .compatible = "auo,b133htn01" },
+	{ .compatible = "boe,nv140fhmn49" },
+	{ .compatible = "lg,lb070wv8" },
+	{ .compatible = "sharp,lq123p1jx31" },
+	{ .compatible = "boe,nv101wxmn51" },
+	{ }
+};
+
+U_BOOT_DRIVER(simple_panel) = {
+	.name	= "simple_panel",
+	.id	= UCLASS_PANEL,
+	.of_match = simple_panel_ids,
+	.ops	= &simple_panel_ops,
+	.of_to_plat	= simple_panel_of_to_plat,
+	.probe		= simple_panel_probe,
+	.priv_auto	= sizeof(struct simple_panel_priv),
+};