1 // SPDX-License-Identifier: GPL-2.0
14 #include <linux/devm-helpers.h>
15 #include <linux/extcon-provider.h>
16 #include <linux/gpio/consumer.h>
50 	 * Some platforms have a bug in ACPI GPIO description making IRQ
51 	 * GPIO to be output only. Ask the GPIO core to ignore this limit.
53 	{ "id-gpios", &id_gpios, 1, ACPI_GPIO_QUIRK_NO_IO_RESTRICTION },
54 	{ "vbus-gpios", &vbus_gpios, 1 },
55 	{ "mux-gpios", &mux_gpios, 1 },
63 	if (IS_ERR_OR_NULL(data->vbus_boost))  in int3496_set_vbus_boost()
66 	if (data->vbus_boost_enabled == enable)  in int3496_set_vbus_boost()
70 		ret = regulator_enable(data->vbus_boost);  in int3496_set_vbus_boost()
72 		ret = regulator_disable(data->vbus_boost);  in int3496_set_vbus_boost()
75 		data->vbus_boost_enabled = enable;  in int3496_set_vbus_boost()
77 		dev_err(data->dev, "Error updating Vbus boost regulator: %d\n", ret);  in int3496_set_vbus_boost()
84 	int id = gpiod_get_value_cansleep(data->gpio_usb_id);  in int3496_do_usb_id()
87 	dev_dbg(data->dev, "Connected %s cable\n", id ? "PERIPHERAL" : "HOST");  in int3496_do_usb_id()
90 	 * Peripheral: set USB mux to peripheral and disable VBUS  in int3496_do_usb_id()
91 	 * Host: set USB mux to host and enable VBUS  in int3496_do_usb_id()
93 	if (!IS_ERR(data->gpio_usb_mux))  in int3496_do_usb_id()
94 		gpiod_direction_output(data->gpio_usb_mux, id);  in int3496_do_usb_id()
96 	if (!IS_ERR(data->gpio_vbus_en))  in int3496_do_usb_id()
97 		gpiod_direction_output(data->gpio_vbus_en, !id);  in int3496_do_usb_id()
101 	extcon_set_state_sync(data->edev, EXTCON_USB_HOST, !id);  in int3496_do_usb_id()
109 	mod_delayed_work(system_wq, &data->work, DEBOUNCE_TIME);  in int3496_thread_isr()
116 	struct device *dev = &pdev->dev;  in int3496_probe()
123 			dev_err(dev, "can't add GPIO ACPI mapping\n");  in int3496_probe()
130 		return -ENOMEM;  in int3496_probe()
132 	data->dev = dev;  in int3496_probe()
133 	ret = devm_delayed_work_autocancel(dev, &data->work, int3496_do_usb_id);  in int3496_probe()
137 	data->gpio_usb_id =  in int3496_probe()
139 	if (IS_ERR(data->gpio_usb_id)) {  in int3496_probe()
140 		ret = PTR_ERR(data->gpio_usb_id);  in int3496_probe()
141 		dev_err(dev, "can't request USB ID GPIO: %d\n", ret);  in int3496_probe()
145 	data->usb_id_irq = gpiod_to_irq(data->gpio_usb_id);  in int3496_probe()
146 	if (data->usb_id_irq < 0) {  in int3496_probe()
147 		dev_err(dev, "can't get USB ID IRQ: %d\n", data->usb_id_irq);  in int3496_probe()
148 		return data->usb_id_irq;  in int3496_probe()
151 	data->gpio_vbus_en = devm_gpiod_get(dev, "vbus", GPIOD_ASIS);  in int3496_probe()
152 	if (IS_ERR(data->gpio_vbus_en)) {  in int3496_probe()
153 		dev_dbg(dev, "can't request VBUS EN GPIO\n");  in int3496_probe()
154 		data->vbus_boost = devm_regulator_get_optional(dev, "vbus");  in int3496_probe()
157 	data->gpio_usb_mux = devm_gpiod_get(dev, "mux", GPIOD_ASIS);  in int3496_probe()
158 	if (IS_ERR(data->gpio_usb_mux))  in int3496_probe()
159 		dev_dbg(dev, "can't request USB MUX GPIO\n");  in int3496_probe()
162 	data->edev = devm_extcon_dev_allocate(dev, int3496_cable);  in int3496_probe()
163 	if (IS_ERR(data->edev))  in int3496_probe()
164 		return -ENOMEM;  in int3496_probe()
166 	ret = devm_extcon_dev_register(dev, data->edev);  in int3496_probe()
172 	ret = devm_request_threaded_irq(dev, data->usb_id_irq,  in int3496_probe()
179 		dev_err(dev, "can't request IRQ for USB ID GPIO: %d\n", ret);  in int3496_probe()
183 	/* process id-pin so that we start with the right status */  in int3496_probe()
184 	queue_delayed_work(system_wq, &data->work, 0);  in int3496_probe()
185 	flush_delayed_work(&data->work);  in int3496_probe()
199 	{ .name = "intel-int3496" },
206 		.name = "intel-int3496",