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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 */
/** */
/** Host Stack */
/** */
/**************************************************************************/
/**************************************************************************/
/* Include necessary system files. */
#define UX_SOURCE_CODE
#include "ux_api.h"
#include "ux_host_stack.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_host_stack_device_configuration_deactivate PORTABLE C */
/* 6.1.12 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function deactivate current configuration for a device. */
/* When this configuration is deactivated, all the device interfaces */
/* are deactivated on the device. */
/* */
/* INPUT */
/* */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* _ux_utility_semaphore_get Get semaphore */
/* _ux_utility_semaphore_put Put semaphore */
/* (ux_host_class_entry_function) Class entry function */
/* */
/* CALLED BY */
/* */
/* Application */
/* USBX Components */
/* */
/**************************************************************************/
UINT _ux_host_stack_device_configuration_deactivate(UX_DEVICE *device)
{
#if defined(UX_HOST_STANDALONE)
UX_INTERRUPT_SAVE_AREA
#endif
UX_HOST_CLASS_COMMAND command;
UX_CONFIGURATION *configuration;
UX_INTERFACE *interface_ptr;
UINT status;
/* Do a sanity check on the device handle. */
if (device -> ux_device_handle != (ULONG) (ALIGN_TYPE) device)
{
/* Error trap. */
_ux_system_error_handler(UX_SYSTEM_LEVEL_THREAD, UX_SYSTEM_CONTEXT_ENUMERATOR, UX_DEVICE_HANDLE_UNKNOWN);
/* If trace is enabled, insert this event into the trace buffer. */
UX_TRACE_IN_LINE_INSERT(UX_TRACE_ERROR, UX_DEVICE_HANDLE_UNKNOWN, device, 0, 0, UX_TRACE_ERRORS, 0, 0)
return(UX_DEVICE_HANDLE_UNKNOWN);
}
/* If trace is enabled, insert this event into the trace buffer. */
UX_TRACE_IN_LINE_INSERT(UX_TRACE_HOST_STACK_DEVICE_CONFIGURATION_DEACTIVATE, device, device -> ux_device_current_configuration, 0, 0, UX_TRACE_HOST_STACK_EVENTS, 0, 0)
#if defined(UX_HOST_STANDALONE)
/* Check device lock. */
UX_DISABLE
if (device -> ux_device_flags & UX_DEVICE_FLAG_LOCK)
{
UX_RESTORE
return(UX_BUSY);
}
device -> ux_device_flags |= UX_DEVICE_FLAG_LOCK;
UX_RESTORE
#else
/* Protect the control endpoint semaphore here. It will be unprotected in the
transfer request function. */
status = _ux_host_semaphore_get(&device -> ux_device_protection_semaphore, UX_WAIT_FOREVER);
/* Check for status. */
if (status != UX_SUCCESS)
{
/* Error trap. */
_ux_system_error_handler(UX_SYSTEM_LEVEL_THREAD, UX_SYSTEM_CONTEXT_ENUMERATOR, UX_SEMAPHORE_ERROR);
/* If trace is enabled, insert this event into the trace buffer. */
UX_TRACE_IN_LINE_INSERT(UX_TRACE_ERROR, UX_SEMAPHORE_ERROR, device -> ux_device_current_configuration, 0, 0, UX_TRACE_ERRORS, 0, 0)
return(UX_SEMAPHORE_ERROR);
}
#endif
/* Check for the state of the device, if not configured, we are done. */
if (device -> ux_device_state != UX_DEVICE_CONFIGURED)
{
#if defined(UX_HOST_STANDALONE)
device -> ux_device_flags &= ~UX_DEVICE_FLAG_LOCK;
#else
_ux_host_semaphore_put(&device -> ux_device_protection_semaphore);
#endif
return(UX_SUCCESS);
}
/* Deactivate classes by command. */
command.ux_host_class_command_request = UX_HOST_CLASS_COMMAND_DEACTIVATE;
/* Search for the active configuration. */
configuration = device -> ux_device_current_configuration;
/* If device configured configuration must be activated. */
/* We have the correct configuration, search the interface(s). */
interface_ptr = configuration -> ux_configuration_first_interface;
/* Loop to perform the search. */
while (interface_ptr != UX_NULL)
{
/* Check if an instance of the interface is present. */
if (interface_ptr -> ux_interface_class_instance != UX_NULL)
{
/* We need to stop the class instance for the device. */
command.ux_host_class_command_instance = interface_ptr -> ux_interface_class_instance;
/* Call the class. */
interface_ptr -> ux_interface_class -> ux_host_class_entry_function(&command);
}
/* Move to next interface. */
interface_ptr = interface_ptr -> ux_interface_next_interface;
}
/* The device can now be un-configured. */
status = _ux_host_stack_device_configuration_reset(device);
#if defined(UX_HOST_STANDALONE)
device -> ux_device_flags &= ~UX_DEVICE_FLAG_LOCK;
#endif
/* Return completion status. */
return(status);
}
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _uxe_host_stack_device_configuration_deactivate PORTABLE C */
/* 6.3.0 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function checks errors in host stack configuration deactivate */
/* function call. */
/* */
/* INPUT */
/* */
/* device Pointer to device */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* _ux_host_stack_device_configuration_deactivate */
/* Host stack config deactivate */
/* */
/* CALLED BY */
/* */
/* Application */
/* */
/**************************************************************************/
UINT _uxe_host_stack_device_configuration_deactivate(UX_DEVICE *device)
{
/* Sanity check. */
if (device == UX_NULL)
return(UX_INVALID_PARAMETER);
/* Invoke configuration deactivate function. */
return(_ux_host_stack_device_configuration_deactivate(device));
}
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