Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit e44ea364 authored by Krzysztof Kozlowski's avatar Krzysztof Kozlowski Committed by Sebastian Reichel
Browse files

power_supply: Add driver private data 



Allow drivers to store private data inside power_supply structure for
later usage in power supply operations.

Usage of driver private data is necessary to access driver's state
container object from power supply calls (like get_property()) if struct
'power_supply' is a stored there as a pointer, for example:

struct some_driver_info {
	struct i2c_client       *client;
	struct power_supply     *power_supply;
	...
}

In such case one cannot use container_of() and must store pointer to
state container as private data.

Signed-off-by: default avatarKrzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: default avatarBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Reviewed-by: default avatarSebastian Reichel <sre@kernel.org>
Acked-by: default avatarPavel Machek <pavel@ucw.cz>
Signed-off-by: default avatarSebastian Reichel <sre@kernel.org>
parent 1915a718

drivers/power/power_supply_core.c

+6 −0
Original line number Diff line number Diff line
@@ -674,6 +674,12 @@ void power_supply_unregister(struct power_supply *psy) 
}

EXPORT_SYMBOL_GPL(power_supply_unregister);



void *power_supply_get_drvdata(struct power_supply *psy)

{

	return psy->drv_data;

}

EXPORT_SYMBOL_GPL(power_supply_get_drvdata);



static int __init power_supply_class_init(void)

{

	power_supply_class = class_create(THIS_MODULE, "power_supply");

include/linux/power_supply.h

+4 −0
Original line number Diff line number Diff line
@@ -209,6 +209,9 @@ struct power_supply { 
	/* For APM emulation, think legacy userspace. */

	int use_for_apm;



	/* Driver private data */

	void *drv_data;



	/* private */

	struct device *dev;

	struct work_struct changed_work;
@@ -285,6 +288,7 @@ extern int devm_power_supply_register_no_ws(struct device *parent, 
extern void power_supply_unregister(struct power_supply *psy);

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



extern void *power_supply_get_drvdata(struct power_supply *psy);

/* For APM emulation, think legacy userspace. */

extern struct class *power_supply_class;