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: Krzysztof Kozlowski <[email protected]>
Reviewed-by: Bartlomiej Zolnierkiewicz <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Acked-by: Pavel Machek <[email protected]>
Signed-off-by: Sebastian Reichel <[email protected]>

0 files changed, 0 insertions, 0 deletions