1 /*
2 * Copyright (c) 2018 Intel Corporation
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 #include <zephyr/logging/log.h>
8 LOG_MODULE_REGISTER(usb_os_desc, CONFIG_USB_DEVICE_LOG_LEVEL);
9
10 #include <zephyr/kernel.h>
11
12 #include <zephyr/usb/usb_device.h>
13 #include <os_desc.h>
14
15 static struct usb_os_descriptor *os_desc;
16
usb_handle_os_desc(struct usb_setup_packet * setup,int32_t * len,uint8_t ** data)17 int usb_handle_os_desc(struct usb_setup_packet *setup,
18 int32_t *len, uint8_t **data)
19 {
20 if (!os_desc) {
21 return -ENOTSUP;
22 }
23
24 if (USB_GET_DESCRIPTOR_TYPE(setup->wValue) == USB_DESC_STRING &&
25 USB_GET_DESCRIPTOR_INDEX(setup->wValue) == USB_OSDESC_STRING_DESC_INDEX) {
26 LOG_DBG("MS OS Descriptor string read");
27 *data = os_desc->string;
28 *len = os_desc->string_len;
29
30 return 0;
31 }
32
33 return -ENOTSUP;
34 }
35
usb_handle_os_desc_feature(struct usb_setup_packet * setup,int32_t * len,uint8_t ** data)36 int usb_handle_os_desc_feature(struct usb_setup_packet *setup,
37 int32_t *len, uint8_t **data)
38 {
39 LOG_DBG("bRequest 0x%x", setup->bRequest);
40
41 if (!os_desc) {
42 return -ENOTSUP;
43 }
44
45 if (setup->bRequest == os_desc->vendor_code) {
46 switch (setup->wIndex) {
47 case USB_OSDESC_EXTENDED_COMPAT_ID:
48 LOG_DBG("Handle Compat ID");
49 *data = os_desc->compat_id;
50 *len = os_desc->compat_id_len;
51
52 return 0;
53 default:
54 break;
55 }
56 }
57
58 return -ENOTSUP;
59 }
60
61 /* Register MS OS Descriptors version 1 */
usb_register_os_desc(struct usb_os_descriptor * desc)62 void usb_register_os_desc(struct usb_os_descriptor *desc)
63 {
64 os_desc = desc;
65 }
66
usb_os_desc_enabled(void)67 bool usb_os_desc_enabled(void)
68 {
69 return !!os_desc;
70 }
71
