1 // SPDX-License-Identifier: GPL-2.0
14 #include <linux/extcon-provider.h>
49 	{ "id-gpios", &id_gpios, 1, ACPI_GPIO_QUIRK_NO_IO_RESTRICTION },
50 	{ "vbus-gpios", &vbus_gpios, 1 },
51 	{ "mux-gpios", &mux_gpios, 1 },
59 	int id = gpiod_get_value_cansleep(data->gpio_usb_id);  in int3496_do_usb_id()
62 	dev_dbg(data->dev, "Connected %s cable\n", id ? "PERIPHERAL" : "HOST");  in int3496_do_usb_id()
65 	 * Peripheral: set USB mux to peripheral and disable VBUS  in int3496_do_usb_id()
66 	 * Host: set USB mux to host and enable VBUS  in int3496_do_usb_id()
68 	if (!IS_ERR(data->gpio_usb_mux))  in int3496_do_usb_id()
69 		gpiod_direction_output(data->gpio_usb_mux, id);  in int3496_do_usb_id()
71 	if (!IS_ERR(data->gpio_vbus_en))  in int3496_do_usb_id()
72 		gpiod_direction_output(data->gpio_vbus_en, !id);  in int3496_do_usb_id()
74 	extcon_set_state_sync(data->edev, EXTCON_USB_HOST, !id);  in int3496_do_usb_id()
82 	mod_delayed_work(system_wq, &data->work, DEBOUNCE_TIME);  in int3496_thread_isr()
89 	struct device *dev = &pdev->dev;  in int3496_probe()
101 		return -ENOMEM;  in int3496_probe()
103 	data->dev = dev;  in int3496_probe()
104 	INIT_DELAYED_WORK(&data->work, int3496_do_usb_id);  in int3496_probe()
106 	data->gpio_usb_id = devm_gpiod_get(dev, "id", GPIOD_IN);  in int3496_probe()
107 	if (IS_ERR(data->gpio_usb_id)) {  in int3496_probe()
108 		ret = PTR_ERR(data->gpio_usb_id);  in int3496_probe()
113 	data->usb_id_irq = gpiod_to_irq(data->gpio_usb_id);  in int3496_probe()
114 	if (data->usb_id_irq < 0) {  in int3496_probe()
115 		dev_err(dev, "can't get USB ID IRQ: %d\n", data->usb_id_irq);  in int3496_probe()
116 		return data->usb_id_irq;  in int3496_probe()
119 	data->gpio_vbus_en = devm_gpiod_get(dev, "vbus", GPIOD_ASIS);  in int3496_probe()
120 	if (IS_ERR(data->gpio_vbus_en))  in int3496_probe()
121 		dev_info(dev, "can't request VBUS EN GPIO\n");  in int3496_probe()
123 	data->gpio_usb_mux = devm_gpiod_get(dev, "mux", GPIOD_ASIS);  in int3496_probe()
124 	if (IS_ERR(data->gpio_usb_mux))  in int3496_probe()
128 	data->edev = devm_extcon_dev_allocate(dev, int3496_cable);  in int3496_probe()
129 	if (IS_ERR(data->edev))  in int3496_probe()
130 		return -ENOMEM;  in int3496_probe()
132 	ret = devm_extcon_dev_register(dev, data->edev);  in int3496_probe()
138 	ret = devm_request_threaded_irq(dev, data->usb_id_irq,  in int3496_probe()
149 	/* process id-pin so that we start with the right status */  in int3496_probe()
150 	queue_delayed_work(system_wq, &data->work, 0);  in int3496_probe()
151 	flush_delayed_work(&data->work);  in int3496_probe()
162 	devm_free_irq(&pdev->dev, data->usb_id_irq, data);  in int3496_remove()
163 	cancel_delayed_work_sync(&data->work);  in int3496_remove()
176 		.name = "intel-int3496",