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/*************************************************************************** |
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* Copyright (c) 2024 Microsoft Corporation |
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* Copyright (c) 2026-present Eclipse ThreadX contributors |
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* |
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* This program and the accompanying materials are made available under the |
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* terms of the MIT License which is available at |
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* https://opensource.org/licenses/MIT. |
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* |
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* SPDX-License-Identifier: MIT |
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**************************************************************************/ |
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/**************************************************************************/ |
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/**************************************************************************/ |
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/** */ |
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/** USBX Component */ |
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/** */ |
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/** HUB Class */ |
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/** */ |
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/**************************************************************************/ |
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/**************************************************************************/ |
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/* Include necessary system files. */ |
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#define UX_SOURCE_CODE |
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#include "ux_api.h" |
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#include "ux_host_class_hub.h" |
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#include "ux_host_stack.h" |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _ux_host_class_hub_port_change_process PORTABLE C */ |
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/* 6.1 */ |
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/* AUTHOR */ |
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/* */ |
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/* Chaoqiong Xiao, Microsoft Corporation */ |
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/* */ |
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/* DESCRIPTION */ |
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/* */ |
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/* This function will process a port change indication. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* hub Pointer to HUB class */ |
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/* port Port number */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* Completion Status */ |
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/* */ |
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/* CALLS */ |
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/* */ |
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/* _ux_host_class_hub_port_change_connection_process */ |
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/* Process connection */ |
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/* _ux_host_class_hub_port_change_enable_process */ |
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/* Enable process */ |
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/* _ux_host_class_hub_port_change_over_current_process */ |
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/* Change over current process */ |
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/* _ux_host_class_hub_port_change_reset_process */ |
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/* Reset process */ |
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/* _ux_host_class_hub_port_change_suspend_process */ |
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/* Suspend process */ |
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/* _ux_host_class_hub_status_get Get HUB status */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* HUB Class */ |
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/* */ |
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/**************************************************************************/ |
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UINT _ux_host_class_hub_port_change_process(UX_HOST_CLASS_HUB *hub, UINT port) |
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{ |
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USHORT port_status; |
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USHORT port_change; |
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UINT status; |
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/* First step is to retrieve the status on the port with a GET_STATUS. */ |
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status = _ux_host_class_hub_status_get(hub, port, &port_status, &port_change); |
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✓✓ |
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if (status != UX_SUCCESS) |
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return(status); |
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/* On return of the GET_STATUS, the port change field has been updated |
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check for each of the bits it may contain. */ |
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✓✓ |
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if (port_change & UX_HOST_CLASS_HUB_PORT_CHANGE_CONNECTION) |
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_ux_host_class_hub_port_change_connection_process(hub, port, port_status); |
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✓✓ |
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if (port_change & UX_HOST_CLASS_HUB_PORT_CHANGE_ENABLE) |
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_ux_host_class_hub_port_change_enable_process(hub, port, port_status); |
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✓✓ |
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if (port_change & UX_HOST_CLASS_HUB_PORT_CHANGE_SUSPEND) |
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_ux_host_class_hub_port_change_suspend_process(hub, port, port_status); |
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✓✓ |
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if (port_change & UX_HOST_CLASS_HUB_PORT_CHANGE_OVER_CURRENT) |
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_ux_host_class_hub_port_change_over_current_process(hub, port, port_status); |
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✓✓ |
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if (port_change & UX_HOST_CLASS_HUB_PORT_CHANGE_RESET) |
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_ux_host_class_hub_port_change_reset_process(hub, port, port_status); |
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/* Return successful completion. */ |
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return(UX_SUCCESS); |
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} |
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