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https://github.com/NVIDIA/open-gpu-kernel-modules.git
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81 lines
3.0 KiB
C++
81 lines
3.0 KiB
C++
/*
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* SPDX-FileCopyrightText: Copyright (c) 1993-2021 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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* SPDX-License-Identifier: MIT
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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/******************************* DisplayPort *******************************\
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* *
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* Module: dp_auxbus.h *
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* Interface for low level access to the aux bus. *
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* This is the synchronous version of the interface. *
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* *
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\***************************************************************************/
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#ifndef INCLUDED_DP_AUXBUS_H
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#define INCLUDED_DP_AUXBUS_H
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namespace DisplayPort
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{
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class AuxBus : virtual public Object
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{
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public:
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enum status
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{
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success,
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defer,
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nack,
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unSupported,
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};
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enum Action
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{
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read,
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write,
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writeStatusUpdateRequest, // I2C only
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};
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enum Type
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{
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native,
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i2c,
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i2cMot
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};
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virtual status transaction(Action action, Type type, int address,
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NvU8 * buffer, unsigned sizeRequested,
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unsigned * sizeCompleted,
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unsigned * pNakReason = NULL,
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NvU8 offset = 0, NvU8 nWriteTransactions = 0) = 0;
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virtual unsigned transactionSize() = 0;
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virtual status fecTransaction(NvU8 *fecStatus, NvU16 **fecErrorCount, NvU32 flags) { return nack; }
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virtual void setDevicePlugged(bool) {}
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virtual ~AuxBus() {}
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};
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//
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// Wraps an auxbus interface with one that prints all the input and output
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//
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AuxBus * CreateAuxLogger(AuxBus * auxBus);
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}
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#endif //INCLUDED_DP_AUXBUS_H
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