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/***************************************************************************
* Copyright (c) 2024 Microsoft Corporation
* Copyright (c) 2026-present Eclipse ThreadX contributors
*
* This program and the accompanying materials are made available under the
* terms of the MIT License which is available at
* https://opensource.org/licenses/MIT.
*
* SPDX-License-Identifier: MIT
**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** USBX Component */
/** */
/** Generic Serial Host module class */
/** */
/**************************************************************************/
/**************************************************************************/
/* Include necessary system files. */
#define UX_SOURCE_CODE
#include "ux_api.h"
#include "ux_host_class_gser.h"
#include "ux_host_stack.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_host_class_gser_deactivate PORTABLE C */
/* 6.1.10 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function is called when this instance of the gser has been */
/* removed from the bus either directly or indirectly. The bulk in\out */
/* pipes will be destroyed and the instanced removed. */
/* */
/* INPUT */
/* */
/* command Swar class command pointer */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* _ux_host_stack_class_instance_destroy Destroy the class instance */
/* _ux_host_stack_endpoint_transfer_abort */
/* Abort endpoint transfer */
/* _ux_utility_memory_free Free memory block */
/* _ux_host_semaphore_delete Delete protection semaphore */
/* _ux_utility_thread_schedule_other Schedule other threads */
/* */
/* CALLED BY */
/* */
/* _ux_host_class_gser_entry Entry of gser class */
/* */
/**************************************************************************/
UINT _ux_host_class_gser_deactivate(UX_HOST_CLASS_COMMAND *command)
{
UX_HOST_CLASS_GSER *gser;
ULONG interface_index;
/* Get the instance for this class. */
gser = (UX_HOST_CLASS_GSER *) command -> ux_host_class_command_instance;
/* The gser class is being shut down. */
gser -> ux_host_class_gser_state = UX_HOST_CLASS_INSTANCE_SHUTDOWN;
for (interface_index = 0; interface_index < UX_HOST_CLASS_GSER_INTERFACE_NUMBER; interface_index++)
{
/* We need to abort transactions on the bulk Out pipes. */
_ux_host_stack_endpoint_transfer_abort(gser -> ux_host_class_gser_interface_array[interface_index].ux_host_class_gser_bulk_out_endpoint);
/* We need to abort transactions on the bulk In pipes. */
_ux_host_stack_endpoint_transfer_abort(gser -> ux_host_class_gser_interface_array[interface_index].ux_host_class_gser_bulk_in_endpoint);
/* The enumeration thread needs to sleep a while to allow the application or the class that may be using
endpoints to exit properly. */
_ux_host_thread_schedule_other(UX_THREAD_PRIORITY_ENUM);
/* Destroy the semaphore. */
_ux_host_semaphore_delete(&gser -> ux_host_class_gser_interface_array[interface_index].ux_host_class_gser_semaphore);
}
/* Destroy the instance. */
_ux_host_stack_class_instance_destroy(gser -> ux_host_class_gser_class, (VOID *) gser);
/* Before we free the device resources, we need to inform the application
that the device is removed. */
if (_ux_system_host -> ux_system_host_change_function != UX_NULL)
{
/* Inform the application the device is removed. */
_ux_system_host -> ux_system_host_change_function(UX_DEVICE_REMOVAL, gser -> ux_host_class_gser_class, (VOID *) gser);
}
/* If trace is enabled, insert this event into the trace buffer. */
UX_TRACE_IN_LINE_INSERT(UX_TRACE_HOST_CLASS_GSER_DEACTIVATE, gser, 0, 0, 0, UX_TRACE_HOST_CLASS_EVENTS, 0, 0)
/* If trace is enabled, register this object. */
UX_TRACE_OBJECT_UNREGISTER(gser);
/* Free the gser instance memory. */
_ux_utility_memory_free(gser);
/* Return successful status. */
return(UX_SUCCESS);
}
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