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authorKrzysztof Kozlowski <k.kozlowski@samsung.com>2015-03-12 08:44:01 +0100
committerSebastian Reichel <sre@kernel.org>2015-03-13 22:52:52 +0100
commite44ea364394499d38a26ed4c9668fb378ae8797f (patch)
treefaa70daae9bf311bcf12a2104e5a533b20a5e41d /drivers
parent1915a718b1872edffcb13e5436a9f7302d3d36f0 (diff)
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 <k.kozlowski@samsung.com> Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Reviewed-by: Sebastian Reichel <sre@kernel.org> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Sebastian Reichel <sre@kernel.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/power/power_supply_core.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/power/power_supply_core.c b/drivers/power/power_supply_core.c
index 44c810456212..1c0978f961ea 100644
--- a/drivers/power/power_supply_core.c
+++ b/drivers/power/power_supply_core.c
@@ -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");