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Commit 04024f35 authored by Ashay Jaiswal's avatar Ashay Jaiswal
Browse files

power: smb135x-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.

Change-Id: Ibd3865828ccbfa44b36839f5d11e7a60b7ada77d
Signed-off-by: default avatarAshay Jaiswal <ashayj@codeaurora.org>
parent a8371783

drivers/power/smb135x-charger.c

+24 −0
Original line number Diff line number Diff line
@@ -185,6 +185,9 @@ 
#define USING_USB_BIT			BIT(1)

#define USING_DC_BIT			BIT(0)



#define STATUS_2_REG			0x48

#define HARD_LIMIT_STS_BIT		BIT(6)



#define STATUS_4_REG			0x4A

#define BATT_NET_CHG_CURRENT_BIT	BIT(7)

#define BATT_LESS_THAN_2V		BIT(4)
@@ -1728,8 +1731,23 @@ static enum power_supply_property smb135x_parallel_properties[] = { 
	POWER_SUPPLY_PROP_CURRENT_MAX,

	POWER_SUPPLY_PROP_VOLTAGE_MAX,

	POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,

	POWER_SUPPLY_PROP_INPUT_CURRENT_LIMITED,

};



static bool smb135x_is_input_current_limited(struct smb135x_chg *chip)

{

	int rc;

	u8 reg;



	rc = smb135x_read(chip, STATUS_2_REG, &reg);

	if (rc) {

		pr_debug("Couldn't read _REG for ICL status rc = %d\n", rc);

		return false;

	}



	return !!(reg & HARD_LIMIT_STS_BIT);

}



static int smb135x_parallel_set_chg_present(struct smb135x_chg *chip,

						int present)

{
@@ -1969,6 +1987,12 @@ static int smb135x_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 = smb135x_is_input_current_limited(chip);

		else

			val->intval = 0;

		break;

	default:

		return -EINVAL;

	}