Listing 1. The Tiny Tiny USB Serial Driver
#include <linux/config.h>
#ifdef CONFIG_USB_SERIAL_DEBUG
static int debug = 1;
#define DEBUG
#else
static int debug;
#endif
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/tty.h>
#include <linux/module.h>
#include <linux/usb.h>
#include <../drivers/usb/serial/usb-serial.h>
#define MY_PRODUCT_ID 0xfff0
#define MY_DEVICE_ID 0xfff0
static struct usb_device_id id_table [] = {
{ USB_DEVICE(MY_PRODUCT_ID, MY_DEVICE_ID) },
{ } /* Terminating entry */
};
/*
* allow this driver to be automatically loaded
* for these devices if they are present.
*/
MODULE_DEVICE_TABLE (usb, id_table);
static struct usb_driver tiny_driver = {
.name = "tiny",
.probe = usb_serial_probe,
.disconnect = usb_serial_disconnect,
.id_table = id_table,
};
/* All device info needed for the Tiny device */
static struct usb_serial_device_type tiny_device = {
.owner = THIS_MODULE,
.name = "Tiny USB serial",
.short_name = "tiny",
.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,
};
static int __init tiny_init (void)
{
usb_serial_register (&tiny_device);
usb_register (&tiny_driver);
return 0;
}
static void __exit tiny_exit (void)
{
usb_deregister (&tiny_driver);
usb_serial_deregister (&tiny_device);
}
module_init(tiny_init);
module_exit(tiny_exit);
MODULE_LICENSE("GPL");
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