1 /**************************************************************************/
2 /*                                                                        */
3 /*       Copyright (c) Microsoft Corporation. All rights reserved.        */
4 /*                                                                        */
5 /*       This software is licensed under the Microsoft Software License   */
6 /*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
7 /*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
8 /*       and in the root directory of this software.                      */
9 /*                                                                        */
10 /**************************************************************************/
11 
12 
13 /**************************************************************************/
14 /**************************************************************************/
15 /**                                                                       */
16 /** USBX Component                                                        */
17 /**                                                                       */
18 /**   HUB Class                                                           */
19 /**                                                                       */
20 /**************************************************************************/
21 /**************************************************************************/
22 
23 
24 /* Include necessary system files.  */
25 
26 #define UX_SOURCE_CODE
27 
28 #include "ux_api.h"
29 #include "ux_host_class_hub.h"
30 #include "ux_host_stack.h"
31 
32 
33 /**************************************************************************/
34 /*                                                                        */
35 /*  FUNCTION                                               RELEASE        */
36 /*                                                                        */
37 /*    _ux_host_class_hub_port_change_suspend_process      PORTABLE C      */
38 /*                                                           6.1          */
39 /*  AUTHOR                                                                */
40 /*                                                                        */
41 /*    Chaoqiong Xiao, Microsoft Corporation                               */
42 /*                                                                        */
43 /*  DESCRIPTION                                                           */
44 /*                                                                        */
45 /*    This function will process a suspend condition change.              */
46 /*                                                                        */
47 /*  INPUT                                                                 */
48 /*                                                                        */
49 /*    hub                                   Pointer to HUB class          */
50 /*    port                                  Port number                   */
51 /*    port_status                           Status of port                */
52 /*                                                                        */
53 /*  OUTPUT                                                                */
54 /*                                                                        */
55 /*    None                                                                */
56 /*                                                                        */
57 /*  CALLS                                                                 */
58 /*                                                                        */
59 /*    _ux_host_class_hub_feature            Set HUB class feature         */
60 /*                                                                        */
61 /*  CALLED BY                                                             */
62 /*                                                                        */
63 /*    HUB Class                                                           */
64 /*                                                                        */
65 /*  RELEASE HISTORY                                                       */
66 /*                                                                        */
67 /*    DATE              NAME                      DESCRIPTION             */
68 /*                                                                        */
69 /*  05-19-2020     Chaoqiong Xiao           Initial Version 6.0           */
70 /*  09-30-2020     Chaoqiong Xiao           Modified comment(s),          */
71 /*                                            resulting in version 6.1    */
72 /*                                                                        */
73 /**************************************************************************/
_ux_host_class_hub_port_change_suspend_process(UX_HOST_CLASS_HUB * hub,UINT port,UINT port_status)74 VOID  _ux_host_class_hub_port_change_suspend_process(UX_HOST_CLASS_HUB *hub, UINT port, UINT port_status)
75 {
76 
77     UX_PARAMETER_NOT_USED(port_status);
78 
79     /* If trace is enabled, insert this event into the trace buffer.  */
80     UX_TRACE_IN_LINE_INSERT(UX_TRACE_HOST_CLASS_HUB_PORT_CHANGE_SUSPEND_PROCESS, hub, port, port_status, 0, UX_TRACE_HOST_CLASS_EVENTS, 0, 0)
81 
82     /* Here we simply clear the condition so that we don't get awaken again.  */
83     _ux_host_class_hub_feature(hub, port, UX_CLEAR_FEATURE, UX_HOST_CLASS_HUB_C_PORT_SUSPEND);
84 
85     /* Return to caller.  */
86     return;
87 }
88 
89