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authorChanwoo Choi <cw00.choi@samsung.com>2012-05-05 06:24:10 -0700
committerAnton Vorontsov <anton.vorontsov@linaro.org>2012-05-05 19:48:50 -0700
commitd829dc75bafb10754f35fb8895e5143d20267b04 (patch)
tree4cff2aa07dcf7c15ef931e3b9ab20a2d84fcf68d /include/linux/power
parent34298d40e5853bc195c9db012fc1ddccac9b6f7f (diff)
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charger-manager: Poll battery health in normal state
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>
Diffstat (limited to 'include/linux/power')
-rw-r--r--include/linux/power/charger-manager.h25
1 files changed, 25 insertions, 0 deletions
diff --git a/include/linux/power/charger-manager.h b/include/linux/power/charger-manager.h
index 4f75e531c112..baa299a95e13 100644
--- a/include/linux/power/charger-manager.h
+++ b/include/linux/power/charger-manager.h
@@ -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;