release/src-rt/linux/linux-2.6/drivers/usb/serial/usb_debug.c

   1 /*
   2  * USB Debug cable driver
   3  *
   4  * Copyright (C) 2006 Greg Kroah-Hartman <greg@kroah.com>
   5  *
   6  *      This program is free software; you can redistribute it and/or
   7  *      modify it under the terms of the GNU General Public License version
   8  *      2 as published by the Free Software Foundation.
   9  */
  10
  11 #include <linux/kernel.h>
  12 #include <linux/init.h>
  13 #include <linux/tty.h>
  14 #include <linux/module.h>
  15 #include <linux/usb.h>
  16 #include <linux/usb/serial.h>
  17
  18 #define USB_DEBUG_MAX_PACKET_SIZE       8
  19
  20 static struct usb_device_id id_table [] = {
  21         { USB_DEVICE(0x0525, 0x127a) },
  22         { },
  23 };
  24 MODULE_DEVICE_TABLE(usb, id_table);
  25
  26 static struct usb_driver debug_driver = {
  27         .name =         "debug",
  28         .probe =        usb_serial_probe,
  29         .disconnect =   usb_serial_disconnect,
  30         .id_table =     id_table,
  31         .no_dynamic_id =        1,
  32 };
  33
  34 int usb_debug_open(struct usb_serial_port *port, struct file *filp)
  35 {
  36         port->bulk_out_size = USB_DEBUG_MAX_PACKET_SIZE;
  37         return usb_serial_generic_open(port, filp);
  38 }
  39
  40 static struct usb_serial_driver debug_device = {
  41         .driver = {
  42                 .owner =        THIS_MODULE,
  43                 .name =         "debug",
  44         },
  45         .id_table =             id_table,
  46         .num_interrupt_in =     NUM_DONT_CARE,
  47         .num_bulk_in =          NUM_DONT_CARE,
  48         .num_bulk_out =         NUM_DONT_CARE,
  49         .num_ports =            1,
  50         .open =                 usb_debug_open,
  51 };
  52
  53 static int __init debug_init(void)
  54 {
  55         int retval;
  56
  57         retval = usb_serial_register(&debug_device);
  58         if (retval)
  59                 return retval;
  60         retval = usb_register(&debug_driver);
  61         if (retval)
  62                 usb_serial_deregister(&debug_device);
  63         return retval;
  64 }
  65
  66 static void __exit debug_exit(void)
  67 {
  68         usb_deregister(&debug_driver);
  69         usb_serial_deregister(&debug_device);
  70 }
  71
  72 module_init(debug_init);
  73 module_exit(debug_exit);
  74 MODULE_LICENSE("GPL");