#include <linux/of.h>
#include <linux/pinctrl/consumer.h>
#include <linux/platform_device.h>
+#include <linux/power_supply.h>
#include <linux/regulator/consumer.h>
#include <linux/usb/role.h>
struct gpio_desc *vbus_gpiod;
int id_irq;
int vbus_irq;
+
+ struct power_supply_desc desc;
+ struct power_supply *charger;
};
/*
dev_dbg(info->dev, "vbus regulator is %s\n",
regulator_is_enabled(info->vbus) ? "enabled" : "disabled");
+
+ power_supply_changed(info->charger);
}
static void usb_conn_queue_dwork(struct usb_conn_info *info,
return IRQ_HANDLED;
}
+static enum power_supply_property usb_charger_properties[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+};
+
+static int usb_charger_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct usb_conn_info *info = power_supply_get_drvdata(psy);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = info->last_role == USB_ROLE_DEVICE;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
static int usb_conn_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
+ struct power_supply_desc *desc;
struct usb_conn_info *info;
+ struct power_supply_config cfg = {
+ .of_node = dev->of_node,
+ };
int ret = 0;
info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL);
}
}
+ desc = &info->desc;
+ desc->name = "usb-charger";
+ desc->properties = usb_charger_properties;
+ desc->num_properties = ARRAY_SIZE(usb_charger_properties);
+ desc->get_property = usb_charger_get_property;
+ desc->type = POWER_SUPPLY_TYPE_USB;
+ cfg.drv_data = info;
+
+ info->charger = devm_power_supply_register(dev, desc, &cfg);
+ if (IS_ERR(info->charger)) {
+ dev_err(dev, "Unable to register charger\n");
+ return PTR_ERR(info->charger);
+ }
+
platform_set_drvdata(pdev, info);
/* Perform initial detection */