259 lines
7.6 KiB
C
259 lines
7.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Copyright (C) 2011 Samsung Electronics Co., Ltd.
|
|
* MyungJoo.Ham <myungjoo.ham@samsung.com>
|
|
*
|
|
* Charger Manager.
|
|
* This framework enables to control and multiple chargers and to
|
|
* monitor charging even in the context of suspend-to-RAM with
|
|
* an interface combining the chargers.
|
|
*
|
|
**/
|
|
|
|
#ifndef _CHARGER_MANAGER_H
|
|
#define _CHARGER_MANAGER_H
|
|
|
|
#include <linux/power_supply.h>
|
|
#include <linux/extcon.h>
|
|
#include <linux/alarmtimer.h>
|
|
|
|
enum data_source {
|
|
CM_BATTERY_PRESENT,
|
|
CM_NO_BATTERY,
|
|
CM_FUEL_GAUGE,
|
|
CM_CHARGER_STAT,
|
|
};
|
|
|
|
enum polling_modes {
|
|
CM_POLL_DISABLE = 0,
|
|
CM_POLL_ALWAYS,
|
|
CM_POLL_EXTERNAL_POWER_ONLY,
|
|
CM_POLL_CHARGING_ONLY,
|
|
};
|
|
|
|
enum cm_event_types {
|
|
CM_EVENT_UNKNOWN = 0,
|
|
CM_EVENT_BATT_FULL,
|
|
CM_EVENT_BATT_IN,
|
|
CM_EVENT_BATT_OUT,
|
|
CM_EVENT_BATT_OVERHEAT,
|
|
CM_EVENT_BATT_COLD,
|
|
CM_EVENT_EXT_PWR_IN_OUT,
|
|
CM_EVENT_CHG_START_STOP,
|
|
CM_EVENT_OTHERS,
|
|
};
|
|
|
|
/**
|
|
* struct charger_cable
|
|
* @extcon_name: the name of extcon device.
|
|
* @name: the name of charger cable(external connector).
|
|
* @extcon_dev: the extcon device.
|
|
* @wq: the workqueue to control charger according to the state of
|
|
* charger cable. If charger cable is attached, enable charger.
|
|
* But if charger cable is detached, disable charger.
|
|
* @nb: the notifier block to receive changed state from EXTCON
|
|
* (External Connector) when charger cable is attached/detached.
|
|
* @attached: the state of charger cable.
|
|
* true: the charger cable is attached
|
|
* false: the charger cable is detached
|
|
* @charger: the instance of struct charger_regulator.
|
|
* @cm: the Charger Manager representing the battery.
|
|
*/
|
|
struct charger_cable {
|
|
const char *extcon_name;
|
|
const char *name;
|
|
|
|
/* The charger-manager use Extcon framework */
|
|
struct extcon_specific_cable_nb extcon_dev;
|
|
struct work_struct wq;
|
|
struct notifier_block nb;
|
|
|
|
/* The state of charger cable */
|
|
bool attached;
|
|
|
|
struct charger_regulator *charger;
|
|
|
|
/*
|
|
* Set min/max current of regulator to protect over-current issue
|
|
* according to a kind of charger cable when cable is attached.
|
|
*/
|
|
int min_uA;
|
|
int max_uA;
|
|
|
|
struct charger_manager *cm;
|
|
};
|
|
|
|
/**
|
|
* struct charger_regulator
|
|
* @regulator_name: the name of regulator for using charger.
|
|
* @consumer: the regulator consumer for the charger.
|
|
* @externally_control:
|
|
* Set if the charger-manager cannot control charger,
|
|
* the charger will be maintained with disabled state.
|
|
* @cables:
|
|
* the array of charger cables to enable/disable charger
|
|
* and set current limit according to constraint data of
|
|
* struct charger_cable if only charger cable included
|
|
* in the array of charger cables is attached/detached.
|
|
* @num_cables: the number of charger cables.
|
|
* @attr_g: Attribute group for the charger(regulator)
|
|
* @attr_name: "name" sysfs entry
|
|
* @attr_state: "state" sysfs entry
|
|
* @attr_externally_control: "externally_control" sysfs entry
|
|
* @attrs: Arrays pointing to attr_name/state/externally_control for attr_g
|
|
*/
|
|
struct charger_regulator {
|
|
/* The name of regulator for charging */
|
|
const char *regulator_name;
|
|
struct regulator *consumer;
|
|
|
|
/* charger never on when system is on */
|
|
int externally_control;
|
|
|
|
/*
|
|
* Store constraint information related to current limit,
|
|
* each cable have different condition for charging.
|
|
*/
|
|
struct charger_cable *cables;
|
|
int num_cables;
|
|
|
|
struct attribute_group attr_grp;
|
|
struct device_attribute attr_name;
|
|
struct device_attribute attr_state;
|
|
struct device_attribute attr_externally_control;
|
|
struct attribute *attrs[4];
|
|
|
|
struct charger_manager *cm;
|
|
};
|
|
|
|
/**
|
|
* struct charger_desc
|
|
* @psy_name: the name of power-supply-class for charger manager
|
|
* @polling_mode:
|
|
* Determine which polling mode will be used
|
|
* @fullbatt_vchkdrop_ms:
|
|
* @fullbatt_vchkdrop_uV:
|
|
* Check voltage drop after the battery is fully charged.
|
|
* If it has dropped more than fullbatt_vchkdrop_uV after
|
|
* fullbatt_vchkdrop_ms, CM will restart charging.
|
|
* @fullbatt_uV: voltage in microvolt
|
|
* If VBATT >= fullbatt_uV, it is assumed to be full.
|
|
* @fullbatt_soc: state of Charge in %
|
|
* If state of Charge >= fullbatt_soc, it is assumed to be full.
|
|
* @fullbatt_full_capacity: full capacity measure
|
|
* If full capacity of battery >= fullbatt_full_capacity,
|
|
* it is assumed to be full.
|
|
* @polling_interval_ms: interval in millisecond at which
|
|
* charger manager will monitor battery health
|
|
* @battery_present:
|
|
* Specify where information for existence of battery can be obtained
|
|
* @psy_charger_stat: the names of power-supply for chargers
|
|
* @num_charger_regulator: the number of entries in charger_regulators
|
|
* @charger_regulators: array of charger regulators
|
|
* @psy_fuel_gauge: the name of power-supply for fuel gauge
|
|
* @thermal_zone : the name of thermal zone for battery
|
|
* @temp_min : Minimum battery temperature for charging.
|
|
* @temp_max : Maximum battery temperature for charging.
|
|
* @temp_diff : Temperature difference to restart charging.
|
|
* @measure_battery_temp:
|
|
* true: measure battery temperature
|
|
* false: measure ambient temperature
|
|
* @charging_max_duration_ms: Maximum possible duration for charging
|
|
* If whole charging duration exceed 'charging_max_duration_ms',
|
|
* cm stop charging.
|
|
* @discharging_max_duration_ms:
|
|
* Maximum possible duration for discharging with charger cable
|
|
* after full-batt. If discharging duration exceed 'discharging
|
|
* max_duration_ms', cm start charging.
|
|
*/
|
|
struct charger_desc {
|
|
const char *psy_name;
|
|
|
|
enum polling_modes polling_mode;
|
|
unsigned int polling_interval_ms;
|
|
|
|
unsigned int fullbatt_vchkdrop_ms;
|
|
unsigned int fullbatt_vchkdrop_uV;
|
|
unsigned int fullbatt_uV;
|
|
unsigned int fullbatt_soc;
|
|
unsigned int fullbatt_full_capacity;
|
|
|
|
enum data_source battery_present;
|
|
|
|
const char **psy_charger_stat;
|
|
|
|
int num_charger_regulators;
|
|
struct charger_regulator *charger_regulators;
|
|
const struct attribute_group **sysfs_groups;
|
|
|
|
const char *psy_fuel_gauge;
|
|
|
|
const char *thermal_zone;
|
|
|
|
int temp_min;
|
|
int temp_max;
|
|
int temp_diff;
|
|
|
|
bool measure_battery_temp;
|
|
|
|
u32 charging_max_duration_ms;
|
|
u32 discharging_max_duration_ms;
|
|
};
|
|
|
|
#define PSY_NAME_MAX 30
|
|
|
|
/**
|
|
* struct charger_manager
|
|
* @entry: entry for list
|
|
* @dev: device pointer
|
|
* @desc: instance of charger_desc
|
|
* @fuel_gauge: power_supply for fuel gauge
|
|
* @charger_stat: array of power_supply for chargers
|
|
* @tzd_batt : thermal zone device for battery
|
|
* @charger_enabled: the state of charger
|
|
* @fullbatt_vchk_jiffies_at:
|
|
* jiffies at the time full battery check will occur.
|
|
* @fullbatt_vchk_work: work queue for full battery check
|
|
* @emergency_stop:
|
|
* When setting true, stop charging
|
|
* @psy_name_buf: the name of power-supply-class for charger manager
|
|
* @charger_psy: power_supply for charger manager
|
|
* @status_save_ext_pwr_inserted:
|
|
* saved status of external power before entering suspend-to-RAM
|
|
* @status_save_batt:
|
|
* saved status of battery before entering suspend-to-RAM
|
|
* @charging_start_time: saved start time of enabling charging
|
|
* @charging_end_time: saved end time of disabling charging
|
|
*/
|
|
struct charger_manager {
|
|
struct list_head entry;
|
|
struct device *dev;
|
|
struct charger_desc *desc;
|
|
|
|
#ifdef CONFIG_THERMAL
|
|
struct thermal_zone_device *tzd_batt;
|
|
#endif
|
|
bool charger_enabled;
|
|
|
|
unsigned long fullbatt_vchk_jiffies_at;
|
|
struct delayed_work fullbatt_vchk_work;
|
|
|
|
int emergency_stop;
|
|
|
|
char psy_name_buf[PSY_NAME_MAX + 1];
|
|
struct power_supply_desc charger_psy_desc;
|
|
struct power_supply *charger_psy;
|
|
|
|
u64 charging_start_time;
|
|
u64 charging_end_time;
|
|
};
|
|
|
|
#ifdef CONFIG_CHARGER_MANAGER
|
|
extern void cm_notify_event(struct power_supply *psy,
|
|
enum cm_event_types type, char *msg);
|
|
#else
|
|
static inline void cm_notify_event(struct power_supply *psy,
|
|
enum cm_event_types type, char *msg) { }
|
|
#endif
|
|
#endif /* _CHARGER_MANAGER_H */
|