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Commit 716a4631 authored by Kavya Nunna's avatar Kavya Nunna
Browse files

power: qpnp-smbcharger: Add support for float charger detection 



PMI8996 charger does not detect FLOAT adapter. To support it,
FLOAT detection is done by the USB driver and notified to PMIC
by reporting  -ETIMEDOUT through the CURRENT_MAX power-supply
property. Charger then configures the charge current to 1500mA.

Change-Id: I6abd4668b41988d98465f00402aa2be558054cdd
Signed-off-by: default avatarKavya Nunna <knunna@codeaurora.org>
parent 22dc337a

drivers/power/supply/qcom/qpnp-smbcharger.c

+11 −1
Original line number Diff line number Diff line
@@ -5747,6 +5747,16 @@ static void update_typec_otg_status(struct smbchg_chip *chip, int mode, 
static int smbchg_set_sdp_current(struct smbchg_chip *chip, int current_ma)

{

	if (chip->usb_supply_type == POWER_SUPPLY_TYPE_USB) {

		if (current_ma == -ETIMEDOUT) {

			/* float charger */

			current_ma = CURRENT_1500_MA;

			pr_smb(PR_MISC,

				"Update usb_type to FLOAT current=%dmA\n",

								current_ma);

			chip->usb_psy_d.type = POWER_SUPPLY_TYPE_USB_FLOAT;

		} else {

			current_ma = current_ma / 1000;

		}

		/* Override if type-c charger used */

		if (chip->typec_current_ma > 500 &&

				current_ma < chip->typec_current_ma) {
@@ -5807,7 +5817,7 @@ static int smbchg_usb_set_property(struct power_supply *psy, 
		break;

	case POWER_SUPPLY_PROP_CURRENT_MAX:

	case POWER_SUPPLY_PROP_SDP_CURRENT_MAX:

		smbchg_set_sdp_current(chip, val->intval / 1000);

		smbchg_set_sdp_current(chip, val->intval);

	default:

		return -EINVAL;

	}