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charger-manager: Use EXTCON Subsystem to detect charger cables for charging

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This patch support that charger-manager use EXTCON(External Connector)
Subsystem to detect the state of charger cables for enabling or disabling
charger(regulator) and select the charger cable for charging among
a number of external cable according to policy of H/W board.

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>
This commit is contained in:
Chanwoo Choi
2012-07-12 15:03:25 +09:00
committed by Anton Vorontsov
parent 85a392d47c
commit bee737bccb
2 changed files with 179 additions and 17 deletions
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59
include/linux/power/charger-manager.h
View File

@@ -16,6 +16,7 @@
#define _CHARGER_MANAGER_H
#include <linux/power_supply.h>
#include <linux/extcon.h>
enum data_source {
CM_BATTERY_PRESENT,
@@ -64,6 +65,62 @@ struct charger_global_desc {
bool assume_timer_stops_in_suspend;
};
/**
* struct charger_cable
* @extcon_name: the name of extcon device.
* @name: the name of charger cable(external connector).
* @extcon_dev: the extcon device.
* @wq: the workqueue to control charger according to the state of
* charger cable. If charger cable is attached, enable charger.
* But if charger cable is detached, disable charger.
* @nb: the notifier block to receive changed state from EXTCON
* (External Connector) when charger cable is attached/detached.
* @attached: the state of charger cable.
* true: the charger cable is attached
* false: the charger cable is detached
* @charger: the instance of struct charger_regulator.
* @cm: the Charger Manager representing the battery.
*/
struct charger_cable {
const char *extcon_name;
const char *name;
/* The charger-manager use Exton framework*/
struct extcon_specific_cable_nb extcon_dev;
struct work_struct wq;
struct notifier_block nb;
/* The state of charger cable */
bool attached;
struct charger_regulator *charger;
struct charger_manager *cm;
};
/**
* struct charger_regulator
* @regulator_name: the name of regulator for using charger.
* @consumer: the regulator consumer for the charger.
* @cables:
* the array of charger cables to enable/disable charger
* and set current limit according to constratint data of
* struct charger_cable if only charger cable included
* in the array of charger cables is attached/detached.
* @num_cables: the number of charger cables.
*/
struct charger_regulator {
/* The name of regulator for charging */
const char *regulator_name;
struct regulator *consumer;
/*
* Store constraint information related to current limit,
* each cable have different condition for charging.
*/
struct charger_cable *cables;
int num_cables;
};
/**
* struct charger_desc
* @psy_name: the name of power-supply-class for charger manager
@@ -109,7 +166,7 @@ struct charger_desc {
char **psy_charger_stat;
int num_charger_regulators;
struct regulator_bulk_data *charger_regulators;
struct charger_regulator *charger_regulators;
char *psy_fuel_gauge;