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/* Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* USB API definitions.
*
* This file includes definitions needed by common code that wants to control
* the state of the USB peripheral, but doesn't need to know about the specific
* implementation.
*/
#ifndef USB_API_H
#define USB_API_H
/*
* Initialize the USB peripheral, enabling its clock and configuring the DP/DN
* GPIOs correctly. This function is called via an init hook, but may need to
* be called again if usb_release is called. This function will call
* usb_connect by default unless CONFIG_USB_INHIBIT is defined.
*/
void usb_init(void);
/*
* Enable the pullup on the DP line to signal that this device exists to the
* host and to start the enumeration process.
*/
void usb_connect(void);
/*
* Disable the pullup on the DP line. This causes the device to be disconnected
* from the host.
*/
void usb_disconnect(void);
/*
* Disconnect from the host by calling usb_disconnect and then turn off the USB
* peripheral, releasing its GPIOs and disabling its clock.
*/
void usb_release(void);
#endif /* USB_API_H */
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