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Commit 2d5771c4 authored by Xiaozhe Shi's avatar Xiaozhe Shi
Browse files

power: smb1351-charger: report icl status in parallel mode 



Report the input current limited status via the power supply in parallel
mode in order to better optimize for HVDCP usecases.

CRs-Fixed: 930588
Change-Id: I9d802227ebd0289b796477020a51826717fc908f
Signed-off-by: default avatarXiaozhe Shi <xiaozhes@codeaurora.org>
parent 2449babe

drivers/power/smb1351-charger.c

+22 −0
Original line number Diff line number Diff line
@@ -1356,6 +1356,7 @@ static enum power_supply_property smb1351_parallel_properties[] = { 
	POWER_SUPPLY_PROP_PRESENT,

	POWER_SUPPLY_PROP_CURRENT_MAX,

	POWER_SUPPLY_PROP_VOLTAGE_MAX,

	POWER_SUPPLY_PROP_INPUT_CURRENT_LIMITED,

	POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,

};
@@ -1486,6 +1487,20 @@ static int smb1351_get_closest_usb_setpoint(int val) 
		return i + 1;

}



static bool smb1351_is_input_current_limited(struct smb1351_charger *chip)

{

	int rc;

	u8 reg;



	rc = smb1351_read_reg(chip, IRQ_H_REG, &reg);

	if (rc) {

		pr_err("Failed to read IRQ_H_REG for ICL status: %d\n", rc);

		return false;

	}



	return !!(reg & IRQ_IC_LIMIT_STATUS_BIT);

}



static int smb1351_parallel_set_property(struct power_supply *psy,

				       enum power_supply_property prop,

				       const union power_supply_propval *val)
@@ -1585,6 +1600,13 @@ static int smb1351_parallel_get_property(struct power_supply *psy, 
		else

			val->intval = POWER_SUPPLY_STATUS_DISCHARGING;

		break;

	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMITED:

		if (chip->parallel_charger_present)

			val->intval =

				smb1351_is_input_current_limited(chip) ? 1 : 0;

		else

			val->intval = 0;

		break;

	default:

		return -EINVAL;

	}