This patch adds power supply charge control structure to power_supply struct
and add a Kconfig flag to use these controls by charger frameworks.
This patch also adds a helper function/API to return the charge control
struct to the charger frameworks.
Signed-off-by: Ramakrishna Pallala <ramakrishna.pall...@intel.com>
---
drivers/power/Kconfig | 6 ++++++
drivers/power/power_supply_core.c | 18 ++++++++++++++++++
include/linux/power_supply.h | 26 ++++++++++++++++++++++++++
3 files changed, 50 insertions(+), 0 deletions(-)
diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
index 263499f..782067b 100644
--- a/drivers/power/Kconfig
+++ b/drivers/power/Kconfig
@@ -346,6 +346,12 @@ config AB8500_BM
help
Say Y to include support for AB8500 battery management.
+config PSY_CM_LOW_LEVEL_SUPPORT
+ bool "Low level driver support for charger managers"
+ help
+ Say Y here to enable low level power supply class drivers
+ support for charger manager or framework.
+
endif # POWER_SUPPLY
source "drivers/power/avs/Kconfig"
diff --git a/drivers/power/power_supply_core.c
b/drivers/power/power_supply_core.c
index f984da1..0f393c6 100644
--- a/drivers/power/power_supply_core.c
+++ b/drivers/power/power_supply_core.c
@@ -158,6 +158,24 @@ struct power_supply *power_supply_get_by_name(char *name)
}
EXPORT_SYMBOL_GPL(power_supply_get_by_name);
+#ifdef CONFIG_PSY_CM_LOW_LEVEL_SUPPORT
+struct power_supply_charger_control
+ *power_supply_get_chrg_cntl_by_name(const char *name)
+{
+ struct device *dev = class_find_device(power_supply_class, NULL,
+ (char *)name, power_supply_match_device_by_name);
+
+ return dev ? ((struct power_supply *)dev_get_drvdata(dev))->chrg_cntl :
NULL;
+}
+#else
+struct power_supply_charger_control
+ *power_supply_get_chrg_cntl_by_name(const char *name)
+{
+ return NULL;
+}
+#endif
+EXPORT_SYMBOL_GPL(power_supply_get_chrg_cntl_by_name);
+
int power_supply_powers(struct power_supply *psy, struct device *dev)
{
return sysfs_create_link(&psy->dev->kobj, &dev->kobj, "powers");
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
index 1f0ab90..35cdf2c 100644
--- a/include/linux/power_supply.h
+++ b/include/linux/power_supply.h
@@ -191,6 +191,10 @@ struct power_supply {
struct thermal_cooling_device *tcd;
#endif
+#ifdef CONFIG_PSY_CM_LOW_LEVEL_SUPPORT
+ struct power_supply_charger_control *chrg_cntl;
+#endif
+
#ifdef CONFIG_LEDS_TRIGGERS
struct led_trigger *charging_full_trig;
char *charging_full_trig_name;
@@ -224,7 +228,29 @@ struct power_supply_info {
int use_for_apm;
};
+struct power_supply_charger_control {
+ const char *name;
+ /* get charging status */
+ int (*is_charging_enabled)(void);
+ int (*is_charger_enabled)(void);
+
+ /* set charging parameters */
+ int (*set_in_current_limit)(int uA);
+ int (*set_charge_current)(int uA);
+ int (*set_charge_voltage)(int uV);
+
+ /* control battery charging */
+ int (*enable_charging)(void);
+ int (*disable_charging)(void);
+
+ /* control VSYS or system supply */
+ int (*turnon_charger)(void);
+ int (*turnoff_charger)(void);
+};
+
extern struct power_supply *power_supply_get_by_name(char *name);
+extern struct power_supply_charger_control
+ *power_supply_get_chrg_cntl_by_name(const 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);
--
1.7.0.4
--
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