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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_activate PORTABLE C */
/* 6.3.0 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function calls the USBX stack to activate the class. */
/* */
/* INPUT */
/* */
/* command Dpump class command pointer */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* _ux_host_class_gser_configure Configure gser class */
/* _ux_host_class_gser_endpoints_get Get endpoints of gser */
/* _ux_host_stack_class_instance_create Create class instance */
/* _ux_host_stack_class_instance_destroy Destroy the class instance */
/* _ux_utility_memory_allocate Allocate memory block */
/* _ux_utility_memory_free Free memory block */
/* */
/* CALLED BY */
/* */
/* _ux_host_class_gser_entry Entry of gser class */
/* */
/**************************************************************************/
UINT _ux_host_class_gser_activate(UX_HOST_CLASS_COMMAND *command)
{
UX_DEVICE *device;
UX_HOST_CLASS_GSER *gser;
UINT status;
ULONG interface_index;
/* The Generic Modem class is always activated by the device descriptor. */
device = (UX_DEVICE *) command -> ux_host_class_command_container;
/* Obtain memory for this class instance. */
gser = _ux_utility_memory_allocate(UX_NO_ALIGN, UX_REGULAR_MEMORY, sizeof(UX_HOST_CLASS_GSER));
if (gser == UX_NULL)
return(UX_MEMORY_INSUFFICIENT);
/* Store the class container into this instance. */
gser -> ux_host_class_gser_class = command -> ux_host_class_command_class_ptr;
/* Store the device container into the gser class instance. */
gser -> ux_host_class_gser_device = device;
/* Store the instance in the device container, this is for the USBX stack
when it needs to invoke the class for deactivation. */
device -> ux_device_class_instance = (VOID *) gser;
/* Create this class instance. */
_ux_host_stack_class_instance_create(gser -> ux_host_class_gser_class, (VOID *) gser);
/* Configure the gser class. */
status = _ux_host_class_gser_configure(gser);
/* Get the gser endpoint(s). We will need to search for Bulk Out and Bulk In endpoints on each interface . */
if (status == UX_SUCCESS)
status = _ux_host_class_gser_endpoints_get(gser);
/* Success things. */
if (status == UX_SUCCESS)
{
/* Mark the gser as live now. */
gser -> ux_host_class_gser_state = UX_HOST_CLASS_INSTANCE_LIVE;
/* If all is fine and the device is mounted, we may need to inform the application
if a function has been programmed in the system structure. */
if (_ux_system_host -> ux_system_host_change_function != UX_NULL)
{
/* Call system change function. */
_ux_system_host -> ux_system_host_change_function(UX_DEVICE_INSERTION, 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_ACTIVATE, gser, 0, 0, 0, UX_TRACE_HOST_CLASS_EVENTS, 0, 0)
/* If trace is enabled, register this object. */
UX_TRACE_OBJECT_REGISTER(UX_TRACE_HOST_OBJECT_TYPE_INTERFACE, gser, 0, 0, 0)
/* Return success. */
return(UX_SUCCESS);
}
/* Free created resources. */
for (interface_index = 0; interface_index < UX_HOST_CLASS_GSER_INTERFACE_NUMBER; interface_index ++)
{
if (_ux_host_semaphore_created(&gser -> ux_host_class_gser_interface_array[interface_index].ux_host_class_gser_semaphore))
_ux_host_semaphore_delete(&gser -> ux_host_class_gser_interface_array[interface_index].ux_host_class_gser_semaphore);
}
/* Destroy class instance. */
_ux_host_stack_class_instance_destroy(gser -> ux_host_class_gser_class, (VOID *) gser);
/* Clear the instance in the device container. */
device -> ux_device_class_instance = UX_NULL;
/* Free instance memory. */
_ux_utility_memory_free(gser);
/* Return completion status. */
return(status);
}
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