C++ (Cpp) extcon_get_state Examples

Example #1

File: mtu3_dr.c Project: asmalldev/linux

static int ssusb_extcon_register(struct otg_switch_mtk *otg_sx)
{
	struct ssusb_mtk *ssusb =
		container_of(otg_sx, struct ssusb_mtk, otg_switch);
	struct extcon_dev *edev = otg_sx->edev;
	int ret;

	/* extcon is optional */
	if (!edev)
		return 0;

	otg_sx->vbus_nb.notifier_call = ssusb_vbus_notifier;
	ret = devm_extcon_register_notifier(ssusb->dev, edev, EXTCON_USB,
					&otg_sx->vbus_nb);
	if (ret < 0)
		dev_err(ssusb->dev, "failed to register notifier for USB\n");

	otg_sx->id_nb.notifier_call = ssusb_id_notifier;
	ret = devm_extcon_register_notifier(ssusb->dev, edev, EXTCON_USB_HOST,
					&otg_sx->id_nb);
	if (ret < 0)
		dev_err(ssusb->dev, "failed to register notifier for USB-HOST\n");

	dev_dbg(ssusb->dev, "EXTCON_USB: %d, EXTCON_USB_HOST: %d\n",
		extcon_get_state(edev, EXTCON_USB),
		extcon_get_state(edev, EXTCON_USB_HOST));

	/* default as host, switch to device mode if needed */
	if (extcon_get_state(edev, EXTCON_USB_HOST) == false)
		ssusb_set_mailbox(otg_sx, MTU3_ID_FLOAT);
	if (extcon_get_state(edev, EXTCON_USB) == true)
		ssusb_set_mailbox(otg_sx, MTU3_VBUS_VALID);

	return 0;
}

Example #2

File: dwc3-omap.c Project: asmalldev/linux

static int dwc3_omap_extcon_register(struct dwc3_omap *omap)
{
	int			ret;
	struct device_node	*node = omap->dev->of_node;
	struct extcon_dev	*edev;

	if (of_property_read_bool(node, "extcon")) {
		edev = extcon_get_edev_by_phandle(omap->dev, 0);
		if (IS_ERR(edev)) {
			dev_vdbg(omap->dev, "couldn't get extcon device\n");
			return -EPROBE_DEFER;
		}

		omap->vbus_nb.notifier_call = dwc3_omap_vbus_notifier;
		ret = devm_extcon_register_notifier(omap->dev, edev,
						EXTCON_USB, &omap->vbus_nb);
		if (ret < 0)
			dev_vdbg(omap->dev, "failed to register notifier for USB\n");

		omap->id_nb.notifier_call = dwc3_omap_id_notifier;
		ret = devm_extcon_register_notifier(omap->dev, edev,
						EXTCON_USB_HOST, &omap->id_nb);
		if (ret < 0)
			dev_vdbg(omap->dev, "failed to register notifier for USB-HOST\n");

		if (extcon_get_state(edev, EXTCON_USB) == true)
			dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_VALID);
		if (extcon_get_state(edev, EXTCON_USB_HOST) == true)
			dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_GROUND);

		omap->edev = edev;
	}

	return 0;
}

Example #3

File: phy-qcom-usb-hs.c Project: Lyude/linux

static int qcom_usb_hs_phy_power_on(struct phy *phy)
{
	struct qcom_usb_hs_phy *uphy = phy_get_drvdata(phy);
	struct ulpi *ulpi = uphy->ulpi;
	const struct ulpi_seq *seq;
	int ret, state;

	ret = clk_prepare_enable(uphy->ref_clk);
	if (ret)
		return ret;

	ret = clk_prepare_enable(uphy->sleep_clk);
	if (ret)
		goto err_sleep;

	ret = regulator_set_load(uphy->v1p8, 50000);
	if (ret < 0)
		goto err_1p8;

	ret = regulator_enable(uphy->v1p8);
	if (ret)
		goto err_1p8;

	ret = regulator_set_voltage_triplet(uphy->v3p3, 3050000, 3300000,
					    3300000);
	if (ret)
		goto err_3p3;

	ret = regulator_set_load(uphy->v3p3, 50000);
	if (ret < 0)
		goto err_3p3;

	ret = regulator_enable(uphy->v3p3);
	if (ret)
		goto err_3p3;

	for (seq = uphy->init_seq; seq->addr; seq++) {
		ret = ulpi_write(ulpi, ULPI_EXT_VENDOR_SPECIFIC + seq->addr,
				 seq->val);
		if (ret)
			goto err_ulpi;
	}

	if (uphy->reset) {
		ret = reset_control_reset(uphy->reset);
		if (ret)
			goto err_ulpi;
	}

	if (uphy->vbus_edev) {
		state = extcon_get_state(uphy->vbus_edev, EXTCON_USB);
		/* setup initial state */
		qcom_usb_hs_phy_vbus_notifier(&uphy->vbus_notify, state,
					      uphy->vbus_edev);
		ret = devm_extcon_register_notifier(&ulpi->dev, uphy->vbus_edev,
				EXTCON_USB, &uphy->vbus_notify);
		if (ret)
			goto err_ulpi;
	}

	return 0;
err_ulpi:
	regulator_disable(uphy->v3p3);
err_3p3:
	regulator_disable(uphy->v1p8);
err_1p8:
	clk_disable_unprepare(uphy->sleep_clk);
err_sleep:
	clk_disable_unprepare(uphy->ref_clk);
	return ret;
}