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Commit 344e3fd0 authored by Umang Agrawal's avatar Umang Agrawal
Browse files

power: battery: Add support to restrict main charger FCC 



If main charger FCC upper limit is defined, add support to restrict
main charger FCC to the defined value.

Change-Id: I89614354d9489df84781c5bc83c5bab929a6dd01
Signed-off-by: default avatarUmang Agrawal <uagrawal@codeaurora.org>
parent ec453551

drivers/power/supply/qcom/battery.c

+23 −2
Original line number Diff line number Diff line
@@ -92,6 +92,7 @@ struct pl_data { 
	struct notifier_block	nb;

	bool			pl_disable;

	int			taper_entry_fv;

	int			main_fcc_max;

};



struct pl_data *the_chip;
@@ -468,10 +469,16 @@ static void get_fcc_split(struct pl_data *chip, int total_ua, 
	 * through main charger's BATFET, keep the main charger's FCC

	 * to the votable result.

	 */

	if (chip->pl_batfet_mode == POWER_SUPPLY_PL_STACKED_BATFET)

	if (chip->pl_batfet_mode == POWER_SUPPLY_PL_STACKED_BATFET) {

		*master_ua = max(0, total_ua);

	else

		if (chip->main_fcc_max)

			*master_ua = min(*master_ua,

					chip->main_fcc_max + *slave_ua);

	} else {

		*master_ua = max(0, total_ua - *slave_ua);

		if (chip->main_fcc_max)

			*master_ua = min(*master_ua, chip->main_fcc_max);

	}

}



static void get_fcc_stepper_params(struct pl_data *chip, int main_fcc_ua,
@@ -1003,6 +1010,16 @@ static int pl_disable_vote_callback(struct votable *votable, 
	chip->fcc_stepper_enable = pval.intval;

	pr_debug("FCC Stepper %s\n", pval.intval ? "enabled" : "disabled");



	rc = power_supply_get_property(chip->main_psy,

			POWER_SUPPLY_PROP_MAIN_FCC_MAX, &pval);

	if (rc < 0) {

		pl_dbg(chip, PR_PARALLEL,

			"Couldn't read primary charger FCC upper limit, rc=%d\n",

			rc);

	} else if (pval.intval > 0) {

		chip->main_fcc_max = pval.intval;

	}



	if (chip->fcc_stepper_enable) {

		cancel_delayed_work_sync(&chip->fcc_stepper_work);

		vote(chip->pl_awake_votable, FCC_STEPPER_VOTER, false, 0);
@@ -1148,6 +1165,10 @@ static int pl_disable_vote_callback(struct votable *votable, 
			(master_fcc_ua * 100) / total_fcc_ua,

			(slave_fcc_ua * 100) / total_fcc_ua);

	} else {

		if (chip->main_fcc_max)

			total_fcc_ua = min(total_fcc_ua,

						chip->main_fcc_max);



		if (!chip->fcc_stepper_enable) {

			if (IS_USBIN(chip->pl_mode))

				split_settled(chip);