blob: 804fb06cf6d6c8bbcca881b8d415a87a1aabe5ce [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0
* A simple GPIO VBUS sensing driver for B peripheral only devices
* with internal transceivers.
* Optionally D+ pullup can be controlled by a second GPIO.
* Copyright (c) 2008 Philipp Zabel <>
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
* struct gpio_vbus_mach_info - configuration for gpio_vbus
* @gpio_vbus: VBUS sensing GPIO
* @gpio_pullup: optional D+ or D- pullup GPIO (else negative/invalid)
* @gpio_vbus_inverted: true if gpio_vbus is active low
* @gpio_pullup_inverted: true if gpio_pullup is active low
* @wakeup: configure gpio_vbus as a wake-up source
* The VBUS sensing GPIO should have a pulldown, which will normally be
* part of a resistor ladder turning a 4.0V-5.25V level on VBUS into a
* value the GPIO detects as active. Some systems will use comparators.
struct gpio_vbus_mach_info {
int gpio_vbus;
int gpio_pullup;
bool gpio_vbus_inverted;
bool gpio_pullup_inverted;
bool wakeup;