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authorKrzysztof Kozlowski <k.kozlowski@samsung.com>2015-03-12 10:44:01 +0300
committerSebastian Reichel <sre@kernel.org>2015-03-14 00:52:52 +0300
commite44ea364394499d38a26ed4c9668fb378ae8797f (patch)
treefaa70daae9bf311bcf12a2104e5a533b20a5e41d /include/linux/power_supply.h
parent1915a718b1872edffcb13e5436a9f7302d3d36f0 (diff)
downloadlinux-e44ea364394499d38a26ed4c9668fb378ae8797f.tar.xz
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 'include/linux/power_supply.h')
-rw-r--r--include/linux/power_supply.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
index f606d6b4bd56..e30d85c0158d 100644
--- a/include/linux/power_supply.h
+++ b/include/linux/power_supply.h
@@ -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;