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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 */
/** */
/** HID Remote Control Class */
/** */
/**************************************************************************/
/**************************************************************************/
/* Include necessary system files. */
#define UX_SOURCE_CODE
#include "ux_api.h"
#include "ux_host_class_hid.h"
#include "ux_host_class_hid_remote_control.h"
#include "ux_host_stack.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_host_class_hid_remote_control_entry PORTABLE C */
/* 6.1.10 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function is the entry point of the HID Remote Control client. */
/* This function is called by the HID class after it has parsed a new */
/* HID report descriptor and is searching for a HID client. */
/* */
/* INPUT */
/* */
/* command Pointer to command */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* _ux_host_class_hid_remote_control_activate */
/* Activate HID RC class */
/* _ux_host_class_hid_remote_control_deactivate */
/* Deactivate HID RC class */
/* */
/* CALLED BY */
/* */
/* Host Stack */
/* */
/**************************************************************************/
UINT _ux_host_class_hid_remote_control_entry(UX_HOST_CLASS_HID_CLIENT_COMMAND *command)
{
UINT status;
/* The command request will tell us we need to do here, either a enumeration
query, an activation or a deactivation. */
switch (command -> ux_host_class_hid_client_command_request)
{
case UX_HOST_CLASS_COMMAND_QUERY:
/* The query command is used to let the HID class know if we want to own
this device or not */
if ((command -> ux_host_class_hid_client_command_page == UX_HOST_CLASS_HID_PAGE_CONSUMER) &&
(command -> ux_host_class_hid_client_command_usage == UX_HOST_CLASS_HID_CONSUMER_REMOTE_CONTROL))
return(UX_SUCCESS);
else
return(UX_NO_CLASS_MATCH);
case UX_HOST_CLASS_COMMAND_ACTIVATE:
/* The activate command is used by the HID class to start the HID client. */
status = _ux_host_class_hid_remote_control_activate(command);
/* Return completion status. */
return(status);
case UX_HOST_CLASS_COMMAND_DEACTIVATE:
/* The deactivate command is used by the HID class when it received a deactivate
command from the USBX stack and there was a HID client attached to the HID instance */
status = _ux_host_class_hid_remote_control_deactivate(command);
/* Return completion status. */
return(status);
#if defined(UX_HOST_STANDALONE)
case UX_HOST_CLASS_COMMAND_ACTIVATE_WAIT:
/* Nothing to do, just next state. */
return(UX_STATE_NEXT);
#endif
default:
break;
}
/* Return error status. */
return(UX_ERROR);
}
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