charger-manager: Support limit of maximum possible
This patch check maximum possible duration of charging/discharging.
If whole charging duration exceed 'desc->charging_max_duration_ms', cm
stop charging to prevent overcharge/overheat. And if discharging duration
exceed, charger cable is attached, after full-batt, cm start charging to
maintain fully charged state for battery.
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
diff --git a/include/linux/power/charger-manager.h b/include/linux/power/charger-manager.h
index 76b37ef..a7b388e 100644
--- a/include/linux/power/charger-manager.h
+++ b/include/linux/power/charger-manager.h
@@ -162,6 +162,13 @@
* @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 {
char *psy_name;
@@ -186,6 +193,9 @@
int (*temperature_out_of_range)(int *mC);
bool measure_battery_temp;
+
+ u64 charging_max_duration_ms;
+ u64 discharging_max_duration_ms;
};
#define PSY_NAME_MAX 30
@@ -210,6 +220,8 @@
* 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;
@@ -232,6 +244,9 @@
bool status_save_ext_pwr_inserted;
bool status_save_batt;
+
+ u64 charging_start_time;
+ u64 charging_end_time;
};
#ifdef CONFIG_CHARGER_MANAGER