1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (c) 2015 Google, Inc
4 * Written by Simon Glass <sjg@chromium.org>
16 struct led_gpio_priv {
17 struct gpio_desc gpio;
20 static int gpio_led_set_state(struct udevice *dev, enum led_state_t state)
22 struct led_gpio_priv *priv = dev_get_priv(dev);
25 if (!dm_gpio_is_valid(&priv->gpio))
32 ret = dm_gpio_get_value(&priv->gpio);
41 return dm_gpio_set_value(&priv->gpio, state);
44 static enum led_state_t gpio_led_get_state(struct udevice *dev)
46 struct led_gpio_priv *priv = dev_get_priv(dev);
49 if (!dm_gpio_is_valid(&priv->gpio))
51 ret = dm_gpio_get_value(&priv->gpio);
55 return ret ? LEDST_ON : LEDST_OFF;
58 static int led_gpio_probe(struct udevice *dev)
60 struct led_gpio_priv *priv = dev_get_priv(dev);
62 return gpio_request_by_name(dev, "gpios", 0, &priv->gpio, GPIOD_IS_OUT);
65 static int led_gpio_remove(struct udevice *dev)
68 * The GPIO driver may have already been removed. We will need to
69 * address this more generally.
71 #ifndef CONFIG_SANDBOX
72 struct led_gpio_priv *priv = dev_get_priv(dev);
74 if (dm_gpio_is_valid(&priv->gpio))
75 dm_gpio_free(dev, &priv->gpio);
81 static int led_gpio_bind(struct udevice *parent)
87 dev_for_each_subnode(node, parent) {
88 ret = device_bind_driver_to_node(parent, "gpio_led",
89 ofnode_get_name(node),
98 static const struct led_ops gpio_led_ops = {
99 .set_state = gpio_led_set_state,
100 .get_state = gpio_led_get_state,
103 U_BOOT_DRIVER(led_gpio) = {
106 .ops = &gpio_led_ops,
107 .priv_auto = sizeof(struct led_gpio_priv),
108 .probe = led_gpio_probe,
109 .remove = led_gpio_remove,
112 static const struct udevice_id led_gpio_ids[] = {
113 { .compatible = "gpio-leds" },
117 U_BOOT_DRIVER(led_gpio_wrap) = {
118 .name = "gpio_led_wrap",
120 .of_match = led_gpio_ids,
121 .bind = led_gpio_bind,