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charger-manager: Poll battery health in normal state

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Charger-Manager needs to check battery health in normal state
as well as suspend-to-RAM state. When the battery is fully charged,
Charger-Manager needs to determine when the chargers restart charging.

This patch allows Charger-Manager to monitor battery health in normal
state and handle operation for chargers after battery is fully charged.

Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Donggeun Kim <dg77.kim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
This commit is contained in:
Chanwoo Choi
2012-05-05 06:24:10 -07:00
committed by Anton Vorontsov
parent 34298d40e5
commit d829dc75ba
3 changed files with 278 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/linux/power/charger-manager.h
+25
View File
@@ -18,6 +18,8 @@
#include <linux/power_supply.h>
enum data_source {
CM_BATTERY_PRESENT,
CM_NO_BATTERY,
CM_FUEL_GAUGE,
CM_CHARGER_STAT,
};
@@ -38,11 +40,18 @@ enum polling_modes {
* rtc_only_wakeup() returning false.
* If the RTC given to CM is the only wakeup reason,
* rtc_only_wakeup should return true.
* @assume_timer_stops_in_suspend:
* Assume that the jiffy timer stops in suspend-to-RAM.
* When enabled, CM does not rely on jiffies value in
* suspend_again and assumes that jiffies value does not
* change during suspend.
*/
struct charger_global_desc {
char *rtc_name;
bool (*rtc_only_wakeup)(void);
bool assume_timer_stops_in_suspend;
};
/**
@@ -50,6 +59,11 @@ struct charger_global_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 it is not being charged and VBATT >= fullbatt_uV,
* it is assumed to be full.
@@ -76,6 +90,8 @@ struct charger_desc {
enum polling_modes polling_mode;
unsigned int polling_interval_ms;
unsigned int fullbatt_vchkdrop_ms;
unsigned int fullbatt_vchkdrop_uV;
unsigned int fullbatt_uV;
enum data_source battery_present;
@@ -101,6 +117,11 @@ struct charger_desc {
* @fuel_gauge: power_supply for fuel gauge
* @charger_stat: array of power_supply for chargers
* @charger_enabled: the state of charger
* @fullbatt_vchk_jiffies_at:
* jiffies at the time full battery check will occur.
* @fullbatt_vchk_uV: voltage in microvolt
* criteria for full battery
* @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
@@ -121,6 +142,10 @@ struct charger_manager {
bool charger_enabled;
unsigned long fullbatt_vchk_jiffies_at;
unsigned int fullbatt_vchk_uV;
struct delayed_work fullbatt_vchk_work;
int emergency_stop;
int last_temp_mC;