1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
|
/*
* Copyright (C) 2021
*
* Aristo Chen <wmchen.aristo@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <errno.h>
#include <stdio.h>
#include <linux/usb/ch9.h>
#include <usbg/usbg.h>
#include <usbg/function/printer.h>
#define VENDOR 0x1d6b
#define PRODUCT 0x0104
int main(void)
{
usbg_state *s;
usbg_gadget *g;
usbg_config *c;
usbg_function *f_printer;
int ret = -EINVAL;
int usbg_ret;
struct usbg_gadget_attrs g_attrs = {
.bcdUSB = 0x0200,
.bDeviceClass = USB_CLASS_PER_INTERFACE,
.bDeviceSubClass = 0x00,
.bDeviceProtocol = 0x00,
.bMaxPacketSize0 = 64, /* Max allowed ep0 packet size */
.idVendor = VENDOR,
.idProduct = PRODUCT,
.bcdDevice = 0x0001, /* Verson of device */
};
struct usbg_gadget_strs g_strs = {
.serial = "0123456789", /* Serial number */
.manufacturer = "Foo Inc.", /* Manufacturer */
.product = "Bar Gadget" /* Product string */
};
struct usbg_config_strs c_strs = {
.configuration = "PRINTER"};
usbg_ret = usbg_init("/sys/kernel/config", &s);
if (usbg_ret != USBG_SUCCESS)
{
fprintf(stderr, "Error on USB gadget init\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out1;
}
usbg_ret = usbg_create_gadget(s, "g1", &g_attrs, &g_strs, &g);
if (usbg_ret != USBG_SUCCESS)
{
fprintf(stderr, "Error on create gadget\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out2;
}
usbg_ret = usbg_create_function(g, USBG_F_PRINTER, "usb0", NULL, &f_printer);
if (usbg_ret != USBG_SUCCESS)
{
fprintf(stderr, "Error creating printer function\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out2;
}
/* NULL can be passed to use kernel defaults */
usbg_ret = usbg_create_config(g, 1, "The only one", NULL, &c_strs, &c);
if (usbg_ret != USBG_SUCCESS)
{
fprintf(stderr, "Error creating config\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out2;
}
usbg_ret = usbg_add_config_function(c, "printer.1", f_printer);
if (usbg_ret != USBG_SUCCESS)
{
fprintf(stderr, "Error adding function\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out2;
}
usbg_ret = usbg_enable_gadget(g, DEFAULT_UDC);
if (usbg_ret != USBG_SUCCESS)
{
fprintf(stderr, "Error enabling gadget\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out2;
}
ret = 0;
out2:
usbg_cleanup(s);
out1:
return ret;
}
|
