blob: 9f3b3c3a225435281886ce1069544b625112c2fe [file] [log] [blame]
/*
* Copyright (C) 2023 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.hardware.usb;
@VintfStability
@Backing(type="int")
/**
* Indicates the current status of DisplayPort link training over USB-C for the
* attached DisplayPort Alt Mode partner sink as described in DisplayPort
* v1.4/2.1.
*/
enum LinkTrainingStatus {
/*
* Indicates the link training result is not available because link training
* has not completed or initiated yet.
*/
UNKNOWN = 0,
/*
* Indicates that link training has completed and optimal settings for data
* transmission between the sink and source device have successfully been
* negotiated.
*/
SUCCESS = 1,
/*
* Indicates that link training has failed and the link initialization has
* terminated.
*/
FAILURE = 2,
}