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 /** OHCI Controller Driver */
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_hcd_ohci.h"
30 #include "ux_host_stack.h"
31
32
33 /**************************************************************************/
34 /* */
35 /* FUNCTION RELEASE */
36 /* */
37 /* _ux_hcd_ohci_frame_number_set PORTABLE C */
38 /* 6.1 */
39 /* AUTHOR */
40 /* */
41 /* Chaoqiong Xiao, Microsoft Corporation */
42 /* */
43 /* DESCRIPTION */
44 /* */
45 /* This function will set the current frame number to the one */
46 /* specified. This function is mostly used for isochronous purposes. */
47 /* Here we need to write to the host controller which in turn will */
48 /* update the HCCA at the end of the frame. */
49 /* */
50 /* INPUT */
51 /* */
52 /* hcd_ohci Pointer to OHCI controller */
53 /* frame_number Frame number to set */
54 /* */
55 /* OUTPUT */
56 /* */
57 /* None */
58 /* */
59 /* CALLS */
60 /* */
61 /* _ux_hcd_ohci_register_write Write OHCI register */
62 /* */
63 /* CALLED BY */
64 /* */
65 /* OHCI Controller Driver */
66 /* */
67 /* RELEASE HISTORY */
68 /* */
69 /* DATE NAME DESCRIPTION */
70 /* */
71 /* 05-19-2020 Chaoqiong Xiao Initial Version 6.0 */
72 /* 09-30-2020 Chaoqiong Xiao Modified comment(s), */
73 /* resulting in version 6.1 */
74 /* */
75 /**************************************************************************/
_ux_hcd_ohci_frame_number_set(UX_HCD_OHCI * hcd_ohci,ULONG frame_number)76 VOID _ux_hcd_ohci_frame_number_set(UX_HCD_OHCI *hcd_ohci, ULONG frame_number)
77 {
78
79 /* Write to OHCI register. */
80 _ux_hcd_ohci_register_write(hcd_ohci, OHCI_HC_FM_NUMBER, frame_number & 0xffff);
81 return;
82 }
83
84
