diff options
Diffstat (limited to 'include/linux/power_supply.h')
| -rw-r--r-- | include/linux/power_supply.h | 78 |
1 files changed, 64 insertions, 14 deletions
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index 096dbced02ac..75a1dd8dc56e 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -13,6 +13,7 @@ #ifndef __LINUX_POWER_SUPPLY_H__ #define __LINUX_POWER_SUPPLY_H__ +#include <linux/device.h> #include <linux/workqueue.h> #include <linux/leds.h> #include <linux/spinlock.h> @@ -173,22 +174,32 @@ union power_supply_propval { const char *strval; }; -struct device; struct device_node; +struct power_supply; -struct power_supply { - const char *name; - enum power_supply_type type; - enum power_supply_property *properties; - size_t num_properties; +/* Run-time specific power supply configuration */ +struct power_supply_config { + struct device_node *of_node; + /* Driver private data */ + void *drv_data; char **supplied_to; size_t num_supplicants; +}; - char **supplied_from; - size_t num_supplies; - struct device_node *of_node; +/* Description of power supply */ +struct power_supply_desc { + const char *name; + enum power_supply_type type; + enum power_supply_property *properties; + size_t num_properties; + /* + * Functions for drivers implementing power supply class. + * These shouldn't be called directly by other drivers for accessing + * this power supply. Instead use power_supply_*() functions (for + * example power_supply_get_property()). + */ int (*get_property)(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val); @@ -208,12 +219,27 @@ struct power_supply { bool no_thermal; /* For APM emulation, think legacy userspace. */ int use_for_apm; +}; + +struct power_supply { + const struct power_supply_desc *desc; + + char **supplied_to; + size_t num_supplicants; + + char **supplied_from; + size_t num_supplies; + struct device_node *of_node; + + /* Driver private data */ + void *drv_data; /* private */ - struct device *dev; + struct device dev; struct work_struct changed_work; spinlock_t changed_lock; bool changed; + atomic_t use_cnt; #ifdef CONFIG_THERMAL struct thermal_zone_device *tzd; struct thermal_cooling_device *tcd; @@ -256,6 +282,7 @@ extern struct atomic_notifier_head power_supply_notifier; extern int power_supply_reg_notifier(struct notifier_block *nb); extern void power_supply_unreg_notifier(struct notifier_block *nb); extern struct power_supply *power_supply_get_by_name(const char *name); +extern void power_supply_put(struct power_supply *psy); #ifdef CONFIG_OF extern struct power_supply *power_supply_get_by_phandle(struct device_node *np, const char *property); @@ -274,13 +301,36 @@ extern int power_supply_is_system_supplied(void); static inline int power_supply_is_system_supplied(void) { return -ENOSYS; } #endif -extern int power_supply_register(struct device *parent, - struct power_supply *psy); -extern int power_supply_register_no_ws(struct device *parent, - struct power_supply *psy); +extern int power_supply_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val); +extern int power_supply_set_property(struct power_supply *psy, + enum power_supply_property psp, + const union power_supply_propval *val); +extern int power_supply_property_is_writeable(struct power_supply *psy, + enum power_supply_property psp); +extern void power_supply_external_power_changed(struct power_supply *psy); + +extern struct power_supply *__must_check +power_supply_register(struct device *parent, + const struct power_supply_desc *desc, + const struct power_supply_config *cfg); +extern struct power_supply *__must_check +power_supply_register_no_ws(struct device *parent, + const struct power_supply_desc *desc, + const struct power_supply_config *cfg); +extern struct power_supply *__must_check +devm_power_supply_register(struct device *parent, + const struct power_supply_desc *desc, + const struct power_supply_config *cfg); +extern struct power_supply *__must_check +devm_power_supply_register_no_ws(struct device *parent, + const struct power_supply_desc *desc, + const struct power_supply_config *cfg); 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; |