+// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2015 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <led.h>
#include <asm/gpio.h>
#include <dm/lists.h>
-
-DECLARE_GLOBAL_DATA_PTR;
+#include <dm/uclass-internal.h>
struct led_gpio_priv {
struct gpio_desc gpio;
static int gpio_led_set_state(struct udevice *dev, enum led_state_t state)
{
struct led_gpio_priv *priv = dev_get_priv(dev);
+ int ret;
if (!dm_gpio_is_valid(&priv->gpio))
return -EREMOTEIO;
case LEDST_OFF:
case LEDST_ON:
break;
+ case LEDST_TOGGLE:
+ ret = dm_gpio_get_value(&priv->gpio);
+ if (ret < 0)
+ return ret;
+ state = !ret;
+ break;
default:
return -ENOSYS;
}
{
struct led_uc_plat *uc_plat = dev_get_uclass_platdata(dev);
struct led_gpio_priv *priv = dev_get_priv(dev);
+ const char *default_state;
+ int ret;
/* Ignore the top-level LED node */
if (!uc_plat->label)
return 0;
- return gpio_request_by_name(dev, "gpios", 0, &priv->gpio, GPIOD_IS_OUT);
+
+ ret = gpio_request_by_name(dev, "gpios", 0, &priv->gpio, GPIOD_IS_OUT);
+ if (ret)
+ return ret;
+
+ default_state = dev_read_string(dev, "default-state");
+ if (default_state) {
+ if (!strncmp(default_state, "on", 2))
+ gpio_led_set_state(dev, LEDST_ON);
+ else if (!strncmp(default_state, "off", 3))
+ gpio_led_set_state(dev, LEDST_OFF);
+ }
+ return 0;
}
static int led_gpio_remove(struct udevice *dev)
static int led_gpio_bind(struct udevice *parent)
{
- const void *blob = gd->fdt_blob;
struct udevice *dev;
- int node;
+ ofnode node;
int ret;
- for (node = fdt_first_subnode(blob, dev_of_offset(parent));
- node > 0;
- node = fdt_next_subnode(blob, node)) {
+ dev_for_each_subnode(node, parent) {
struct led_uc_plat *uc_plat;
const char *label;
- label = fdt_getprop(blob, node, "label", NULL);
+ label = ofnode_read_string(node, "label");
if (!label) {
debug("%s: node %s has no label\n", __func__,
- fdt_get_name(blob, node, NULL));
+ ofnode_get_name(node));
return -EINVAL;
}
ret = device_bind_driver_to_node(parent, "gpio_led",
- fdt_get_name(blob, node, NULL),
+ ofnode_get_name(node),
node, &dev);
if (ret)
return ret;
uc_plat = dev_get_uclass_platdata(dev);
uc_plat->label = label;
+
+ if (ofnode_read_bool(node, "default-state")) {
+ struct udevice *devp;
+
+ ret = uclass_get_device_tail(dev, 0, &devp);
+ if (ret)
+ return ret;
+ }
}
return 0;