1 // SPDX-License-Identifier: GPL-2.0
14 #include <linux/devm-helpers.h>
15 #include <linux/extcon-provider.h>
50 	{ "id-gpios", &id_gpios, 1, ACPI_GPIO_QUIRK_NO_IO_RESTRICTION },
51 	{ "vbus-gpios", &vbus_gpios, 1 },
52 	{ "mux-gpios", &mux_gpios, 1 },
60 	int id = gpiod_get_value_cansleep(data->gpio_usb_id);  in int3496_do_usb_id()
63 	dev_dbg(data->dev, "Connected %s cable\n", id ? "PERIPHERAL" : "HOST");  in int3496_do_usb_id()
66 	 * Peripheral: set USB mux to peripheral and disable VBUS  in int3496_do_usb_id()
67 	 * Host: set USB mux to host and enable VBUS  in int3496_do_usb_id()
69 	if (!IS_ERR(data->gpio_usb_mux))  in int3496_do_usb_id()
70 		gpiod_direction_output(data->gpio_usb_mux, id);  in int3496_do_usb_id()
72 	if (!IS_ERR(data->gpio_vbus_en))  in int3496_do_usb_id()
73 		gpiod_direction_output(data->gpio_vbus_en, !id);  in int3496_do_usb_id()
75 	extcon_set_state_sync(data->edev, EXTCON_USB_HOST, !id);  in int3496_do_usb_id()
83 	mod_delayed_work(system_wq, &data->work, DEBOUNCE_TIME);  in int3496_thread_isr()
90 	struct device *dev = &pdev->dev;  in int3496_probe()
102 		return -ENOMEM;  in int3496_probe()
104 	data->dev = dev;  in int3496_probe()
105 	ret = devm_delayed_work_autocancel(dev, &data->work, int3496_do_usb_id);  in int3496_probe()
109 	data->gpio_usb_id = devm_gpiod_get(dev, "id", GPIOD_IN);  in int3496_probe()
110 	if (IS_ERR(data->gpio_usb_id)) {  in int3496_probe()
111 		ret = PTR_ERR(data->gpio_usb_id);  in int3496_probe()
116 	data->usb_id_irq = gpiod_to_irq(data->gpio_usb_id);  in int3496_probe()
117 	if (data->usb_id_irq < 0) {  in int3496_probe()
118 		dev_err(dev, "can't get USB ID IRQ: %d\n", data->usb_id_irq);  in int3496_probe()
119 		return data->usb_id_irq;  in int3496_probe()
122 	data->gpio_vbus_en = devm_gpiod_get(dev, "vbus", GPIOD_ASIS);  in int3496_probe()
123 	if (IS_ERR(data->gpio_vbus_en))  in int3496_probe()
124 		dev_info(dev, "can't request VBUS EN GPIO\n");  in int3496_probe()
126 	data->gpio_usb_mux = devm_gpiod_get(dev, "mux", GPIOD_ASIS);  in int3496_probe()
127 	if (IS_ERR(data->gpio_usb_mux))  in int3496_probe()
131 	data->edev = devm_extcon_dev_allocate(dev, int3496_cable);  in int3496_probe()
132 	if (IS_ERR(data->edev))  in int3496_probe()
133 		return -ENOMEM;  in int3496_probe()
135 	ret = devm_extcon_dev_register(dev, data->edev);  in int3496_probe()
141 	ret = devm_request_threaded_irq(dev, data->usb_id_irq,  in int3496_probe()
152 	/* process id-pin so that we start with the right status */  in int3496_probe()
153 	queue_delayed_work(system_wq, &data->work, 0);  in int3496_probe()
154 	flush_delayed_work(&data->work);  in int3496_probe()
169 		.name = "intel-int3496",