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
118
119
120
121
122
123
|
/*
* AnyData CDMA Serial USB driver
*
* Copyright (C) 2005 Greg Kroah-Hartman <gregkh@suse.de>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 as published by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/tty.h>
#include <linux/module.h>
#include <linux/usb.h>
#include "usb-serial.h"
static struct usb_device_id id_table [] = {
{ USB_DEVICE(0x16d5, 0x6501) }, /* AirData CDMA device */
{ },
};
MODULE_DEVICE_TABLE(usb, id_table);
/* if overridden by the user, then use their value for the size of the
* read and write urbs */
static int buffer_size;
static int debug;
static struct usb_driver anydata_driver = {
.name = "anydata",
.probe = usb_serial_probe,
.disconnect = usb_serial_disconnect,
.id_table = id_table,
.no_dynamic_id = 1,
};
static int anydata_open(struct usb_serial_port *port, struct file *filp)
{
char *buffer;
int result = 0;
dbg("%s - port %d", __FUNCTION__, port->number);
if (buffer_size) {
/* override the default buffer sizes */
buffer = kmalloc(buffer_size, GFP_KERNEL);
if (!buffer) {
dev_err(&port->dev, "%s - out of memory.\n",
__FUNCTION__);
return -ENOMEM;
}
kfree (port->read_urb->transfer_buffer);
port->read_urb->transfer_buffer = buffer;
port->read_urb->transfer_buffer_length = buffer_size;
buffer = kmalloc(buffer_size, GFP_KERNEL);
if (!buffer) {
dev_err(&port->dev, "%s - out of memory.\n",
__FUNCTION__);
return -ENOMEM;
}
kfree (port->write_urb->transfer_buffer);
port->write_urb->transfer_buffer = buffer;
port->write_urb->transfer_buffer_length = buffer_size;
port->bulk_out_size = buffer_size;
}
/* Start reading from the device */
usb_fill_bulk_urb(port->read_urb, port->serial->dev,
usb_rcvbulkpipe(port->serial->dev,
port->bulk_in_endpointAddress),
port->read_urb->transfer_buffer,
port->read_urb->transfer_buffer_length,
usb_serial_generic_write_bulk_callback, port);
result = usb_submit_urb(port->read_urb, GFP_KERNEL);
if (result)
dev_err(&port->dev,
"%s - failed submitting read urb, error %d\n",
__FUNCTION__, result);
return result;
}
static struct usb_serial_driver anydata_device = {
.driver = {
.owner = THIS_MODULE,
.name = "anydata",
},
.id_table = id_table,
.num_interrupt_in = NUM_DONT_CARE,
.num_bulk_in = NUM_DONT_CARE,
.num_bulk_out = NUM_DONT_CARE,
.num_ports = 1,
.open = anydata_open,
};
static int __init anydata_init(void)
{
int retval;
retval = usb_serial_register(&anydata_device);
if (retval)
return retval;
retval = usb_register(&anydata_driver);
if (retval)
usb_serial_deregister(&anydata_device);
return retval;
}
static void __exit anydata_exit(void)
{
usb_deregister(&anydata_driver);
usb_serial_deregister(&anydata_device);
}
module_init(anydata_init);
module_exit(anydata_exit);
MODULE_LICENSE("GPL");
module_param(debug, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(debug, "Debug enabled or not");
module_param(buffer_size, int, 0);
MODULE_PARM_DESC(buffer_size, "Size of the transfer buffers");
|
