Squashed 'lib/lufa/' content from commit 385d40300

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git-subtree-split: 385d4030035dbaf41591309dbde47653bd03841b

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diff --git a/LUFA/Drivers/USB/Core/AVR8/OTG_AVR8.h b/LUFA/Drivers/USB/Core/AVR8/OTG_AVR8.h
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+++ b/LUFA/Drivers/USB/Core/AVR8/OTG_AVR8.h
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+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2017.
+
+  dean [at] fourwalledcubicle [dot] com
+           www.lufa-lib.org
+*/
+
+/*
+  Copyright 2017  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+  Permission to use, copy, modify, distribute, and sell this
+  software and its documentation for any purpose is hereby granted
+  without fee, provided that the above copyright notice appear in
+  all copies and that both that the copyright notice and this
+  permission notice and warranty disclaimer appear in supporting
+  documentation, and that the name of the author not be used in
+  advertising or publicity pertaining to distribution of the
+  software without specific, written prior permission.
+
+  The author disclaims all warranties with regard to this
+  software, including all implied warranties of merchantability
+  and fitness.  In no event shall the author be liable for any
+  special, indirect or consequential damages or any damages
+  whatsoever resulting from loss of use, data or profits, whether
+  in an action of contract, negligence or other tortious action,
+  arising out of or in connection with the use or performance of
+  this software.
+*/
+
+/** \file
+ *  \brief USB OTG definitions for the AVR8 microcontrollers.
+ *  \copydetails Group_OTG_AVR8
+ *
+ *  \note This file should not be included directly. It is automatically included as needed by the USB driver
+ *        dispatch header located in LUFA/Drivers/USB/USB.h.
+ */
+
+/** \ingroup Group_OTG
+ *  \defgroup Group_OTG_AVR8 USB On The Go (OTG) Management (AVR8)
+ *  \brief USB OTG definitions for the AVR8 microcontrollers.
+ *
+ *  Architecture specific USB OTG definitions for the Atmel 8-bit AVR microcontrollers.
+ *
+ *  @{
+ */
+
+#ifndef __USBOTG_AVR8_H__
+#define __USBOTG_AVR8_H__
+
+	/* Includes: */
+		#include "../../../../Common/Common.h"
+
+	/* Enable C linkage for C++ Compilers: */
+		#if defined(__cplusplus)
+			extern "C" {
+		#endif
+
+	/* Preprocessor Checks: */
+		#if !defined(__INCLUDE_FROM_USB_DRIVER)
+			#error Do not include this file directly. Include LUFA/Drivers/USB/USB.h instead.
+		#endif
+
+	/* Public Interface - May be used in end-application: */
+		/* Macros: */
+			/** Mask for the VBUS pulsing method of SRP, supported by some OTG devices.
+			 *
+			 *  \see \ref USB_OTG_Device_InitiateSRP().
+			 */
+			#define USB_OTG_SRP_VBUS                   (1 << SRPSEL)
+
+			/** Mask for the Data + pulsing method of SRP, supported by some OTG devices.
+			 *
+			 *  \see \ref USB_OTG_Device_InitiateSRP().
+			 */
+			#define USB_OTG_STP_DATA                   0
+
+		/* Inline Functions: */
+			/** Initiate a Host Negotiation Protocol request. This indicates to the other connected device
+			 *  that the device wishes to change device/host roles.
+			 */
+			static inline void USB_OTG_Device_RequestHNP(void) ATTR_ALWAYS_INLINE;
+			static inline void USB_OTG_Device_RequestHNP(void)
+			{
+				OTGCON |=  (1 << HNPREQ);
+			}
+
+			/** Cancel a Host Negotiation Protocol request. This stops a pending HNP request to the other
+			 *  connected device.
+			 */
+			static inline void USB_OTG_Device_CancelHNPRequest(void) ATTR_ALWAYS_INLINE;
+			static inline void USB_OTG_Device_CancelHNPRequest(void)
+			{
+				OTGCON &= ~(1 << HNPREQ);
+			}
+
+			/** Determines if the device is currently sending a HNP to an attached host.
+			 *
+			 *  \return Boolean \c true if currently sending a HNP to the other connected device, \c false otherwise
+			 */
+			static inline bool USB_OTG_Device_IsSendingHNP(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
+			static inline bool USB_OTG_Device_IsSendingHNP(void)
+			{
+				return ((OTGCON & (1 << HNPREQ)) ? true : false);
+			}
+
+			/** Initiates a Session Request Protocol request. Most OTG devices turn off VBUS when the USB
+			 *  interface is not in use, to conserve power. Sending a SRP to a USB OTG device running in
+			 *  host mode indicates that VBUS should be applied and a session started.
+			 *
+			 *  There are two different methods of sending a SRP - either pulses on the VBUS line, or by
+			 *  pulsing the Data + line via the internal pull-up resistor.
+			 *
+			 *  \param[in] SRPTypeMask  Mask indicating the type of SRP to use, either \ref USB_OTG_SRP_VBUS or
+			 *                          \ref USB_OTG_STP_DATA.
+			 */
+			static inline void USB_OTG_Device_InitiateSRP(const uint8_t SRPTypeMask) ATTR_ALWAYS_INLINE;
+			static inline void USB_OTG_Device_InitiateSRP(const uint8_t SRPTypeMask)
+			{
+				OTGCON = ((OTGCON & ~(1 << SRPSEL)) | (SRPTypeMask | (1 << SRPREQ)));
+			}
+
+			/** Accepts a HNP from a connected device, indicating that both devices should exchange
+			 *  device/host roles.
+			 */
+			static inline void USB_OTG_Host_AcceptHNP(void) ATTR_ALWAYS_INLINE;
+			static inline void USB_OTG_Host_AcceptHNP(void)
+			{
+				OTGCON |=  (1 << HNPREQ);
+			}
+
+			/** Rejects a HNP from a connected device, indicating that both devices should remain in their
+			 *  current device/host roles.
+			 */
+			static inline void USB_OTG_Host_RejectHNP(void) ATTR_ALWAYS_INLINE;
+			static inline void USB_OTG_Host_RejectHNP(void)
+			{
+				OTGCON &= ~(1 << HNPREQ);
+			}
+
+			/** Indicates if the connected device is currently sending a HNP request.
+			 *
+			 *  \return Boolean \c true if a HNP is currently being issued by the connected device, \c false otherwise.
+			 */
+			static inline bool USB_OTG_Host_IsHNPReceived(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
+			static inline bool USB_OTG_Host_IsHNPReceived(void)
+			{
+				return ((OTGCON & (1 << HNPREQ)) ? true : false);
+			}
+
+	/* Disable C linkage for C++ Compilers: */
+		#if defined(__cplusplus)
+			}
+		#endif
+
+#endif
+
+/** @} */
+