#include <linux/init.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/usb.h>
#include <linux/mutex.h>
#include <linux/ioctl.h>
#include <asm/uaccess.h>

static struct module this_module;
static struct usb_driver driver;
static struct usb_device_id device_table[];
static int device_probe(struct usb_interface *intf, const struct usb_device_id *id);
static void device_disconnect(struct usb_interface *intf);

static struct usb_driver driver = {
	.name = "USB keyboard",
	.id_table = device_table,
	.probe = device_probe,
	.disconnect = device_disconnect,
};

static struct usb_device_id device_table[] = {
	{ USB_DEVICE( 0x1997, 0x2433) },
	{ }
};


static int device_probe(struct usb_interface *intf, const struct usb_device_id *id) 
{
	// called when device is connected
	return 0;
}

static void device_disconnect(struct usb_interface *intf)
{
	// called when device is unplugged
}

static int __init mod_init(void)
{
	// register our module with the usb system
	int check;
	char *mod_name = "USB Keyboard";
	check = usb_register_driver(&driver, &this_module, mod_name);
	if(check < 0) { printk("device failed to register"); return -1; }
	else { printk("device is registered!"); }
	return 0;
}

static void __exit mod_exit(void)
{
	// cleanup
	usb_deregister(&driver);
}

module_init(mod_init);
module_exit(mod_exit);