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charger-manager: Modify the way of checking battery's temperature

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Charger-manager driver used to check battery temperature through the
callback function passed by platform data. Unfortunatley, without that
pre-defined callback function, charger-manager can't get battery's
temperature at all. Also passing callback function through platform data
ruins DT support for charger-manager.

This patch mondifies charger-manager driver to get temperature of battery
without pre-defined callback function. Now, charger-manager can use either
of battery thermometer in fuel-gauge and ouside of battery. It uses
thermal framework interface for outer thermometer if thermal fw is
enabled. Otherwise, it tries to use fuel-gauge's through the power supply
interface.

Signed-off-by: Jonghwa Lee <jonghwa3.lee@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
This commit is contained in:
Jonghwa Lee
2013-12-18 15:42:34 +09:00
committed by Anton Vorontsov
parent d36240d260
commit 5c49a6256b
2 changed files with 136 additions and 49 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
include/linux/power/charger-manager.h
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@@ -37,6 +37,8 @@ enum cm_event_types {
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,
@@ -173,11 +175,10 @@ struct charger_regulator {
* @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
* @temperature_out_of_range:
* Determine whether the status is overheat or cold or normal.
* return_value > 0: overheat
* return_value == 0: normal
* return_value < 0: cold
* @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 diffential to restart charging.
* @measure_battery_temp:
* true: measure battery temperature
* false: measure ambient temperature
@@ -210,7 +211,12 @@ struct charger_desc {
char *psy_fuel_gauge;
int (*temperature_out_of_range)(int *mC);
char *thermal_zone;
int temp_min;
int temp_max;
int temp_diff;
bool measure_battery_temp;
u64 charging_max_duration_ms;
@@ -226,13 +232,13 @@ struct charger_desc {
* @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
* @last_temp_mC: the measured temperature in milli-Celsius
* @psy_name_buf: the name of power-supply-class for charger manager
* @charger_psy: power_supply for charger manager
* @status_save_ext_pwr_inserted:
@@ -250,13 +256,15 @@ struct charger_manager {
struct power_supply *fuel_gauge;
struct power_supply **charger_stat;
#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;
int last_temp_mC;
char psy_name_buf[PSY_NAME_MAX + 1];
struct power_supply charger_psy;