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Diffstat (limited to 'include/linux/power_supply.h')
-rw-r--r--include/linux/power_supply.h78
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;