1/* 2 * A simple GPIO VBUS sensing driver for B peripheral only devices 3 * with internal transceivers. 4 * Optionally D+ pullup can be controlled by a second GPIO. 5 * 6 * Copyright (c) 2008 Philipp Zabel <philipp.zabel@gmail.com> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 * 12 */ 13 14/** 15 * struct gpio_vbus_mach_info - configuration for gpio_vbus 16 * @gpio_vbus: VBUS sensing GPIO 17 * @gpio_pullup: optional D+ or D- pullup GPIO (else negative/invalid) 18 * @gpio_vbus_inverted: true if gpio_vbus is active low 19 * @gpio_pullup_inverted: true if gpio_pullup is active low 20 * @wakeup: configure gpio_vbus as a wake-up source 21 * 22 * The VBUS sensing GPIO should have a pulldown, which will normally be 23 * part of a resistor ladder turning a 4.0V-5.25V level on VBUS into a 24 * value the GPIO detects as active. Some systems will use comparators. 25 */ 26struct gpio_vbus_mach_info { 27 int gpio_vbus; 28 int gpio_pullup; 29 bool gpio_vbus_inverted; 30 bool gpio_pullup_inverted; 31 bool wakeup; 32}; 33