linux_dsm_epyc7002/include/linux/usb/gpio_vbus.h
Greg Kroah-Hartman 5fd54ace47 USB: add SPDX identifiers to all remaining files in drivers/usb/
It's good to have SPDX identifiers in all files to make it easier to
audit the kernel tree for correct licenses.

Update the drivers/usb/ and include/linux/usb* files with the correct
SPDX license identifier based on the license text in the file itself.
The SPDX identifier is a legally binding shorthand, which can be used
instead of the full boiler plate text.

This work is based on a script and data from Thomas Gleixner, Philippe
Ombredanne, and Kate Stewart.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Acked-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-04 11:48:02 +01:00

34 lines
1.1 KiB
C

// 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 <philipp.zabel@gmail.com>
*
* 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;
};