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power_supply: get_by_name and set_charged functionality

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This adds a function that indicates that a battery is fully charged.
It also includes functions to get a power_supply device from the class
of registered devices by name reference. These can be used to find a
specific battery to call power_supply_set_battery_charged() on.

Some battery drivers might need this information to calibrate
themselves.

Signed-off-by: Daniel Mack <[email protected]>
Cc: Ian Molton <[email protected]>
Cc: Anton Vorontsov <[email protected]>
Cc: Matt Reimer <[email protected]>
Signed-off-by: Anton Vorontsov <[email protected]>
This commit is contained in:
Daniel Mack 2009-07-23 20:35:53 +02:00 • committed by Anton Vorontsov
commit e5f5ccb646
2 changed files with 31 additions and 0 deletions
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28
drivers/power/power_supply_core.c
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@ -116,6 +116,34 @@ int power_supply_is_system_supplied(void)
}
EXPORT_SYMBOL_GPL(power_supply_is_system_supplied);
int power_supply_set_battery_charged(struct power_supply *psy)
{
if (psy->type == POWER_SUPPLY_TYPE_BATTERY && psy->set_charged) {
psy->set_charged(psy);
return 0;
}
return -EINVAL;
}
EXPORT_SYMBOL_GPL(power_supply_set_battery_charged);
static int power_supply_match_device_by_name(struct device *dev, void *data)
{
const char *name = data;
struct power_supply *psy = dev_get_drvdata(dev);
return strcmp(psy->name, name) == 0;
}
struct power_supply *power_supply_get_by_name(char *name)
{
struct device *dev = class_find_device(power_supply_class, NULL, name,
power_supply_match_device_by_name);
return dev ? dev_get_drvdata(dev) : NULL;
}
EXPORT_SYMBOL_GPL(power_supply_get_by_name);
int power_supply_register(struct device *parent, struct power_supply *psy)
{
int rc = 0;