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Commit 726ccfec authored by Kavya Nunna's avatar Kavya Nunna
Browse files

power: qpnp-smbcharger: Add voltage now property in usb psy 



Add VOLTAGE_NOW power supply property to expose the USB voltage.

Change-Id: I3041aafaf365c205e53451a5d4ee79dcfe6b78bf
Signed-off-by: default avatarKavya Nunna <knunna@codeaurora.org>
parent 716a4631

Documentation/devicetree/bindings/power/supply/qcom/qpnp-smbcharger.txt

+1 −0
Original line number Diff line number Diff line
@@ -281,6 +281,7 @@ Optional Properties: 
						suspending USB path for fake

						battery.

- qcom,vchg_sns-vadc		Phandle of the VADC node.

- qcom,usbin-vadc		Phandle of the VADC node.

- qcom,vchg-adc-channel-id	The ADC channel to which the VCHG is routed.



Example:

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

+43 −0
Original line number Diff line number Diff line
@@ -277,6 +277,7 @@ struct smbchg_chip { 
	bool				skip_usb_notification;

	u32				vchg_adc_channel;

	struct qpnp_vadc_chip		*vchg_vadc_dev;

	struct qpnp_vadc_chip		*vusb_vadc_dev;



	/* voters */

	struct votable			*fcc_votable;
@@ -5744,6 +5745,30 @@ static void update_typec_otg_status(struct smbchg_chip *chip, int mode, 
	}

}



static int smbchg_get_vusb(struct smbchg_chip *chip)

{

	int rc;

	struct qpnp_vadc_result adc_result;



	if (!is_usb_present(chip))

		return 0;



	if (chip->vusb_vadc_dev) {

		rc = qpnp_vadc_read(chip->vusb_vadc_dev,

				USBIN, &adc_result);

		if (rc < 0) {

			pr_smb(PR_STATUS,

				"error in vusb_uv read rc = %d\n", rc);

			return rc;

		}

	} else {

		return -ENODATA;

	}

	pr_smb(PR_STATUS, "The value of vusb_uv %lld\n", adc_result.physical);



	return adc_result.physical;

}



static int smbchg_set_sdp_current(struct smbchg_chip *chip, int current_ma)

{

	if (chip->usb_supply_type == POWER_SUPPLY_TYPE_USB) {
@@ -5799,6 +5824,9 @@ static int smbchg_usb_get_property(struct power_supply *psy, 
	case POWER_SUPPLY_PROP_HEALTH:

		val->intval = chip->usb_health;

		break;

	case POWER_SUPPLY_PROP_VOLTAGE_NOW:

		val->intval = smbchg_get_vusb(chip);

		break;

	default:

		return -EINVAL;

	}
@@ -5854,6 +5882,7 @@ static enum power_supply_property smbchg_usb_properties[] = { 
	POWER_SUPPLY_PROP_REAL_TYPE,

	POWER_SUPPLY_PROP_HEALTH,

	POWER_SUPPLY_PROP_SDP_CURRENT_MAX,

	POWER_SUPPLY_PROP_VOLTAGE_NOW,

};



#define CHARGE_OUTPUT_VTG_RATIO		840
@@ -8201,6 +8230,7 @@ static int smbchg_probe(struct platform_device *pdev) 
	struct smbchg_chip *chip;

	struct power_supply *typec_psy = NULL;

	struct qpnp_vadc_chip *vadc_dev = NULL, *vchg_vadc_dev = NULL;

	struct qpnp_vadc_chip *vusb_vadc_dev = NULL;

	const char *typec_psy_name;

	struct power_supply_config usb_psy_cfg = {};

	struct power_supply_config batt_psy_cfg = {};
@@ -8249,6 +8279,18 @@ static int smbchg_probe(struct platform_device *pdev) 
		}

	}



	vusb_vadc_dev = NULL;

	if (of_find_property(pdev->dev.of_node, "qcom,usbin-vadc", NULL)) {

		vusb_vadc_dev = qpnp_get_vadc(&pdev->dev, "usbin");

		if (IS_ERR(vusb_vadc_dev)) {

			rc = PTR_ERR(vusb_vadc_dev);

			if (rc != -EPROBE_DEFER)

				dev_err(&pdev->dev, "Couldn't get vadc 'usbin' rc=%d\n",

						rc);

			return rc;

		}

	}





	chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL);

	if (!chip)
@@ -8354,6 +8396,7 @@ static int smbchg_probe(struct platform_device *pdev) 
	init_completion(&chip->usbin_uv_raised);

	chip->vadc_dev = vadc_dev;

	chip->vchg_vadc_dev = vchg_vadc_dev;

	chip->vusb_vadc_dev = vusb_vadc_dev;

	chip->pdev = pdev;

	chip->dev = &pdev->dev;