3  * gpio-vbus.c - simple GPIO VBUS sensing driver for B peripheral devices
25  * A simple GPIO VBUS sensing driver for B peripheral only devices
27  * a regulator to limit the current drawn from VBUS.
38 	int			vbus;  member
44  * This driver relies on "both edges" triggering.  VBUS has 100 msec to
88 	int vbus;  in is_vbus_powered()  local
90 	vbus = gpio_get_value(pdata->gpio_vbus);  in is_vbus_powered()
92 		vbus = !vbus;  in is_vbus_powered()
94 	return vbus;  in is_vbus_powered()
102 	int gpio, status, vbus;  in gpio_vbus_work()  local
107 	vbus = is_vbus_powered(pdata);  in gpio_vbus_work()
108 	if ((vbus ^ gpio_vbus->vbus) == 0)  in gpio_vbus_work()
110 	gpio_vbus->vbus = vbus;  in gpio_vbus_work()
119 	if (vbus) {  in gpio_vbus_work()
153 /* VBUS change IRQ handler */
161 	dev_dbg(&pdev->dev, "VBUS %s (gadget: %s)\n",  in gpio_vbus_irq()
208 	gpio_vbus->vbus = 0; /* start with disconnected */  in gpio_vbus_set_peripheral()
232 	/* draw max 0 mA from vbus in suspend mode; or the previously  in gpio_vbus_set_suspend()
267 	gpio_vbus->phy.label = "gpio-vbus";  in gpio_vbus_probe()
278 		dev_err(&pdev->dev, "can't request vbus gpio %d, err: %d\n",  in gpio_vbus_probe()
377 MODULE_ALIAS("platform:gpio-vbus");
381 		.name  = "gpio-vbus",