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104f811e67
This unifies all the EC header files to use __CROS_EC_FILENAME_H as the include guard. Well, except for test/ util/ and extra/ which use __TEST_ __UTIL_ and __EXTRA_ prefixes respectively. BUG=chromium:496895 BRANCH=none TEST=make buildall -j Signed-off-by: Bill Richardson <wfrichar@chromium.org> Change-Id: Iea71b3a08bdec94a11239de810a2b2e152b15029 Reviewed-on: https://chromium-review.googlesource.com/278121 Reviewed-by: Randall Spangler <rspangler@chromium.org>
46 lines
1.4 KiB
C
46 lines
1.4 KiB
C
/* Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*
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* USB API definitions.
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*
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* This file includes definitions needed by common code that wants to control
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* the state of the USB peripheral, but doesn't need to know about the specific
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* implementation.
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*/
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#ifndef __CROS_EC_USB_API_H
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#define __CROS_EC_USB_API_H
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/*
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* Initialize the USB peripheral, enabling its clock and configuring the DP/DN
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* GPIOs correctly. This function is called via an init hook (unless the board
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* defined CONFIG_USB_INHIBIT_INIT), but may need to be called again if
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* usb_release is called. This function will call usb_connect by default
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* unless CONFIG_USB_INHIBIT_CONNECT is defined.
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*/
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void usb_init(void);
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/* Check if USB peripheral is enabled. */
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int usb_is_enabled(void);
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/*
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* Enable the pullup on the DP line to signal that this device exists to the
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* host and to start the enumeration process.
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*/
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void usb_connect(void);
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/*
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* Disable the pullup on the DP line. This causes the device to be disconnected
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* from the host.
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*/
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void usb_disconnect(void);
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/*
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* Disconnect from the host by calling usb_disconnect and then turn off the USB
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* peripheral, releasing its GPIOs and disabling its clock.
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*/
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void usb_release(void);
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#endif /* __CROS_EC_USB_API_H */
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