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authorDaniel Mack <daniel@caiaq.de>2009-07-23 20:35:53 +0200
committerAnton Vorontsov <cbouatmailru@gmail.com>2009-07-30 17:49:15 +0400
commite5f5ccb646bc6009572b5c23201b5e81638ff150 (patch)
treee0f132871a46d76b98cdaa505f80a2f0e500ff6b
parentff3417e7effe57cc002a8882a48bcb8e1a7e7267 (diff)
downloadop-kernel-dev-e5f5ccb646bc6009572b5c23201b5e81638ff150.zip
op-kernel-dev-e5f5ccb646bc6009572b5c23201b5e81638ff150.tar.gz
power_supply: get_by_name and set_charged functionality
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 <daniel@caiaq.de> Cc: Ian Molton <spyro@f2s.com> Cc: Anton Vorontsov <cbou@mail.ru> Cc: Matt Reimer <mreimer@vpop.net> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
-rw-r--r--drivers/power/power_supply_core.c28
-rw-r--r--include/linux/power_supply.h3
2 files changed, 31 insertions, 0 deletions
diff --git a/drivers/power/power_supply_core.c b/drivers/power/power_supply_core.c
index 12cd6e3..cce75b4 100644
--- a/drivers/power/power_supply_core.c
+++ b/drivers/power/power_supply_core.c
@@ -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;
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
index 4c7c6fc..b5d096d 100644
--- a/include/linux/power_supply.h
+++ b/include/linux/power_supply.h
@@ -144,6 +144,7 @@ struct power_supply {
enum power_supply_property psp,
union power_supply_propval *val);
void (*external_power_changed)(struct power_supply *psy);
+ void (*set_charged)(struct power_supply *psy);
/* For APM emulation, think legacy userspace. */
int use_for_apm;
@@ -183,8 +184,10 @@ struct power_supply_info {
int use_for_apm;
};
+extern struct power_supply *power_supply_get_by_name(char *name);
extern void power_supply_changed(struct power_supply *psy);
extern int power_supply_am_i_supplied(struct power_supply *psy);
+extern int power_supply_set_battery_charged(struct power_supply *psy);
#if defined(CONFIG_POWER_SUPPLY) || defined(CONFIG_POWER_SUPPLY_MODULE)
extern int power_supply_is_system_supplied(void);
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