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power: charger-manager: Use alarmtimer for battery monitoring in suspend.

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To guerantee proper charing and managing batteries even in suspend,
charger-manager has used rtc device with rtc framework interface.
However, it is better to use alarmtimer for cleaner and more appropriate
operation.
This patch makes driver to use alarmtimer for polling work in suspend and
removes all deprecated codes related with using rtc interface.

Signed-off-by: Jonghwa Lee <jonghwa3.lee@samsung.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
This commit is contained in:
Jonghwa Lee
2014-12-19 17:55:13 +09:00
committed by Sebastian Reichel
parent a538cf04ef
commit c1155c64e6
3 changed files with 85 additions and 240 deletions
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32
include/linux/power/charger-manager.h
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@@ -17,6 +17,7 @@
#include <linux/power_supply.h>
#include <linux/extcon.h>
#include <linux/alarmtimer.h>
enum data_source {
CM_BATTERY_PRESENT,
@@ -44,29 +45,6 @@ enum cm_event_types {
CM_EVENT_OTHERS,
};
/**
* struct charger_global_desc
* @rtc_name: the name of RTC used to wake up the system from suspend.
* @rtc_only_wakeup:
* If the system is woken up by waekup-sources other than the RTC or
* callbacks, Charger Manager should recognize with
* 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;
};
/**
* struct charger_cable
* @extcon_name: the name of extcon device.
@@ -266,22 +244,14 @@ struct charger_manager {
char psy_name_buf[PSY_NAME_MAX + 1];
struct power_supply charger_psy;
bool status_save_ext_pwr_inserted;
bool status_save_batt;
u64 charging_start_time;
u64 charging_end_time;
};
#ifdef CONFIG_CHARGER_MANAGER
extern int setup_charger_manager(struct charger_global_desc *gd);
extern bool cm_suspend_again(void);
extern void cm_notify_event(struct power_supply *psy,
enum cm_event_types type, char *msg);
#else
static inline int setup_charger_manager(struct charger_global_desc *gd)
{ return 0; }
static inline bool cm_suspend_again(void) { return false; }
static inline void cm_notify_event(struct power_supply *psy,
enum cm_event_types type, char *msg) { }
#endif