diff options
| author | Rong Dian <b38775@freescale.com> | 2012-06-21 11:22:33 +0800 |
|---|---|---|
| committer | Rong Dian <b38775@freescale.com> | 2012-06-21 16:53:03 +0800 |
| commit | f2931ce9f490902fd263784ffce779d8556d9178 (patch) | |
| tree | 571d5be6e1d1b42689ba5f24b3c9f57762fa8bbe | |
| parent | 7a44e2aeefc95aaa5ba62bec4d6595363ff38f41 (diff) | |
ENGR00214367-1 power_supply: add get_supplier_property
add get_supplier_property interface.
This patch was written by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
originally.
Signed-off-by: Rong Dian <b38775@freescale.com>
| -rw-r--r-- | drivers/power/power_supply_core.c | 31 | ||||
| -rw-r--r-- | include/linux/power_supply.h | 4 |
2 files changed, 34 insertions, 1 deletions
diff --git a/drivers/power/power_supply_core.c b/drivers/power/power_supply_core.c index 329b46b2327d..338d4a68365c 100644 --- a/drivers/power/power_supply_core.c +++ b/drivers/power/power_supply_core.c @@ -94,6 +94,37 @@ int power_supply_am_i_supplied(struct power_supply *psy) } EXPORT_SYMBOL_GPL(power_supply_am_i_supplied); +static int power_supply_find_supplier(struct device *dev, void *data) +{ + struct power_supply *psy = (struct power_supply *)data; + struct power_supply *epsy = dev_get_drvdata(dev); + int i; + + for (i = 0; i < epsy->num_supplicants; i++) + if (!strcmp(epsy->supplied_to[i], psy->name)) + return 1; + return 0; +} + +int power_supply_get_supplier_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct power_supply *epsy; + struct device *dev; + + dev = class_find_device(power_supply_class, NULL, psy, + power_supply_find_supplier); + if (!dev) + return 1; + + epsy = dev_get_drvdata(dev); + put_device(dev); + + return epsy->get_property(epsy, psp, val); +} +EXPORT_SYMBOL_GPL(power_supply_get_supplier_property); + static int __power_supply_is_system_supplied(struct device *dev, void *data) { union power_supply_propval ret = {0,}; diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index 204c18dfdc9e..b13bb89e0873 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -207,7 +207,9 @@ extern int power_supply_is_system_supplied(void); #else static inline int power_supply_is_system_supplied(void) { return -ENOSYS; } #endif - +extern int power_supply_get_supplier_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val); extern int power_supply_register(struct device *parent, struct power_supply *psy); extern void power_supply_unregister(struct power_supply *psy); |