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Commit 45cd4fb2 authored by Chanwoo Choi's avatar Chanwoo Choi Committed by Anton Vorontsov
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charger-manager: Set current limit of regulator for over current protection 



This patch support the protection of host device from over current.
The Charger-manager set proper current limit of charger(regulator) for
charging according to type of charger cable when external connector
is attached.

Signed-off-by: default avatarChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: default avatarMyungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: default avatarAnton Vorontsov <anton.vorontsov@linaro.org>
parent bee737bc

drivers/power/charger-manager.c

+15 −0
Original line number Original line Diff line number Diff line
@@ -1001,6 +1001,21 @@ static void charger_extcon_work(struct work_struct *work) 
{

{

	struct charger_cable *cable =

	struct charger_cable *cable =

			container_of(work, struct charger_cable, wq);

			container_of(work, struct charger_cable, wq);

	int ret;



	if (cable->attached && cable->min_uA != 0 && cable->max_uA != 0) {

		ret = regulator_set_current_limit(cable->charger->consumer,

					cable->min_uA, cable->max_uA);

		if (ret < 0) {

			pr_err("Cannot set current limit of %s (%s)\n",

				cable->charger->regulator_name, cable->name);

			return;

		}



		pr_info("Set current limit of %s : %duA ~ %duA\n",

					cable->charger->regulator_name,

					cable->min_uA, cable->max_uA);

	}





	try_charger_enable(cable->cm, cable->attached);

	try_charger_enable(cable->cm, cable->attached);

}

}

include/linux/power/charger-manager.h

+8 −0
Original line number Original line Diff line number Diff line
@@ -94,6 +94,14 @@ struct charger_cable { 
	bool attached;

	bool attached;





	struct charger_regulator *charger;

	struct charger_regulator *charger;



	/*

	 * Set min/max current of regulator to protect over-current issue

	 * according to a kind of charger cable when cable is attached.

	 */

	int min_uA;

	int max_uA;



	struct charger_manager *cm;

	struct charger_manager *cm;

};

};