From 8fcfe088e21aa0db9d62eaf565757def673efba6 Mon Sep 17 00:00:00 2001 From: Chanwoo Choi Date: Thu, 20 Sep 2012 21:20:05 -0700 Subject: 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 Signed-off-by: Myungjoo Ham Signed-off-by: Kyungmin Park Signed-off-by: Anton Vorontsov --- include/linux/power/charger-manager.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include') diff --git a/include/linux/power/charger-manager.h b/include/linux/power/charger-manager.h index 76b37ef3c071..a7b388ea1588 100644 --- a/include/linux/power/charger-manager.h +++ b/include/linux/power/charger-manager.h @@ -162,6 +162,13 @@ struct charger_regulator { * @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 @@ struct charger_desc { 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 @@ struct charger_desc { * 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 @@ struct charger_manager { bool status_save_ext_pwr_inserted; bool status_save_batt; + + u64 charging_start_time; + u64 charging_end_time; }; #ifdef CONFIG_CHARGER_MANAGER -- cgit v1.2.3-58-ga151