diff options
| author | Rong Dian <b38775@freescale.com> | 2012-06-21 11:22:33 +0800 |
|---|---|---|
| committer | Jason Liu <r64343@freescale.com> | 2012-07-20 13:38:59 +0800 |
| commit | 83093cf018bf03dbb3a2400fca95107b850cabf7 (patch) | |
| tree | 4766c8622696d463e0d88df3ece2e07435a37ebe /drivers/power | |
| parent | d95ecbd625a9b9d1cd98e49a6d065eba26e99692 (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>
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/power_supply_core.c | 31 |
1 files changed, 31 insertions, 0 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,}; |