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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 */
/** */
/** HUB Class */
/** */
/**************************************************************************/
/**************************************************************************/
/* Include necessary system files. */
#define UX_SOURCE_CODE
#include "ux_api.h"
#include "ux_host_class_hub.h"
#include "ux_host_stack.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_host_class_hub_feature PORTABLE C */
/* 6.1.12 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function will send a command to the HUB on a specific port. */
/* The commands can be SET_FEATURE or CLEAR_FEATURE. */
/* */
/* In standalone mode, this functioin prepares the control transfer */
/* request context of specific command, for host stack transfer */
/* function to process, in next steps. */
/* */
/* INPUT */
/* */
/* hub Pointer to HUB class */
/* port Port number */
/* command Command to send */
/* feature Feature to send */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* _ux_host_stack_transfer_request Process transfer request */
/* */
/* CALLED BY */
/* */
/* HUB Class */
/* */
/**************************************************************************/
UINT _ux_host_class_hub_feature(UX_HOST_CLASS_HUB *hub, UINT port, UINT command, UINT function)
{
UX_ENDPOINT *control_endpoint;
UX_TRANSFER *transfer_request;
UINT target;
UINT status;
/* We need to get the default control endpoint transfer request pointer. */
control_endpoint = &hub -> ux_host_class_hub_device -> ux_device_control_endpoint;
transfer_request = &control_endpoint -> ux_endpoint_transfer_request;
/* The target is DEVICE for the HUB and OTHER for the downstream ports. */
if (port == 0)
target = UX_REQUEST_TARGET_DEVICE;
else
target = UX_REQUEST_TARGET_OTHER;
/* Create a transfer request for the SET_FEATURE or CLEAR_FEATURE request. */
transfer_request -> ux_transfer_request_function = command;
transfer_request -> ux_transfer_request_requested_length = 0;
transfer_request -> ux_transfer_request_type = UX_REQUEST_OUT | UX_REQUEST_TYPE_CLASS | target;
transfer_request -> ux_transfer_request_value = function;
transfer_request -> ux_transfer_request_index = port;
#if defined(UX_HOST_STANDALONE)
/* Reset transfer state for _run. */
UX_TRANSFER_STATE_RESET(transfer_request);
status = UX_SUCCESS;
#else
/* Send request to HCD layer. */
status = _ux_host_stack_transfer_request(transfer_request);
#endif
/* Return completion status. */
return(status);
}
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