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Commit abce9770 authored by Sebastian Reichel's avatar Sebastian Reichel Committed by Anton Vorontsov
Browse files

power_supply: Add power_supply_get_by_phandle 



Add method to get power supply by device tree phandle.

Signed-off-by: default avatarSebastian Reichel <sre@debian.org>
Reviewed-by: default avatarPavel Machek <pavel@ucw.cz>
Signed-off-by: default avatarAnton Vorontsov <anton@enomsg.org>
parent 32260308

drivers/power/power_supply_core.c

+26 −0
Original line number Diff line number Diff line
@@ -341,6 +341,32 @@ struct power_supply *power_supply_get_by_name(const char *name) 
}

EXPORT_SYMBOL_GPL(power_supply_get_by_name);



#ifdef CONFIG_OF

static int power_supply_match_device_node(struct device *dev, const void *data)

{

	return dev->parent && dev->parent->of_node == data;

}



struct power_supply *power_supply_get_by_phandle(struct device_node *np,

							const char *property)

{

	struct device_node *power_supply_np;

	struct device *dev;



	power_supply_np = of_parse_phandle(np, property, 0);

	if (!power_supply_np)

		return ERR_PTR(-ENODEV);



	dev = class_find_device(power_supply_class, NULL, power_supply_np,

						power_supply_match_device_node);



	of_node_put(power_supply_np);



	return dev ? dev_get_drvdata(dev) : NULL;

}

EXPORT_SYMBOL_GPL(power_supply_get_by_phandle);

#endif /* CONFIG_OF */



int power_supply_powers(struct power_supply *psy, struct device *dev)

{

	return sysfs_create_link(&psy->dev->kobj, &dev->kobj, "powers");

include/linux/power_supply.h

+8 −0
Original line number Diff line number Diff line
@@ -244,6 +244,14 @@ extern struct atomic_notifier_head power_supply_notifier; 
extern int power_supply_reg_notifier(struct notifier_block *nb);

extern void power_supply_unreg_notifier(struct notifier_block *nb);

extern struct power_supply *power_supply_get_by_name(const char *name);

#ifdef CONFIG_OF

extern struct power_supply *power_supply_get_by_phandle(struct device_node *np,

							const char *property);

#else /* !CONFIG_OF */

static inline struct power_supply *

power_supply_get_by_phandle(struct device_node *np, const char *property)

{ return NULL; }

#endif /* CONFIG_OF */

extern void power_supply_changed(struct power_supply *psy);

extern int power_supply_am_i_supplied(struct power_supply *psy);

extern int power_supply_set_battery_charged(struct power_supply *psy);