release/src-rt-6.x/linux/linux-2.6/drivers/usb/serial/funsoft.c

   1 /*
   2  * Funsoft Serial USB driver
   3  *
   4  * Copyright (C) 2006 Greg Kroah-Hartman <gregkh@suse.de>
   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 #include <asm/uaccess.h>
  18
  19 static int debug;
  20
  21 static struct usb_device_id id_table [] = {
  22         { USB_DEVICE(0x1404, 0xcddc) },
  23         { },
  24 };
  25 MODULE_DEVICE_TABLE(usb, id_table);
  26
  27 static int funsoft_ioctl(struct usb_serial_port *port, struct file *file,
  28                          unsigned int cmd, unsigned long arg)
  29 {
  30         struct ktermios t;
  31
  32         dbg("%s - port %d, cmd 0x%04x", __FUNCTION__, port->number, cmd);
  33
  34         if (cmd == TCSETSF) {
  35                 if (user_termios_to_kernel_termios(&t, (struct termios __user *)arg))
  36                         return -EFAULT;
  37
  38                 dbg("%s - iflag:%x oflag:%x cflag:%x lflag:%x", __FUNCTION__,
  39                     t.c_iflag, t.c_oflag, t.c_cflag, t.c_lflag);
  40
  41                 if (!(t.c_lflag & ICANON))
  42                         return -EINVAL;
  43         }
  44         return -ENOIOCTLCMD;
  45 }
  46
  47 static struct usb_driver funsoft_driver = {
  48         .name =         "funsoft",
  49         .probe =        usb_serial_probe,
  50         .disconnect =   usb_serial_disconnect,
  51         .id_table =     id_table,
  52         .no_dynamic_id =        1,
  53 };
  54
  55 static struct usb_serial_driver funsoft_device = {
  56         .driver = {
  57                 .owner =        THIS_MODULE,
  58                 .name =         "funsoft",
  59         },
  60         .id_table =             id_table,
  61         .usb_driver =           &funsoft_driver,
  62         .num_interrupt_in =     NUM_DONT_CARE,
  63         .num_bulk_in =          NUM_DONT_CARE,
  64         .num_bulk_out =         NUM_DONT_CARE,
  65         .num_ports =            1,
  66         .ioctl =                funsoft_ioctl,
  67 };
  68
  69 static int __init funsoft_init(void)
  70 {
  71         int retval;
  72
  73         retval = usb_serial_register(&funsoft_device);
  74         if (retval)
  75                 return retval;
  76         retval = usb_register(&funsoft_driver);
  77         if (retval)
  78                 usb_serial_deregister(&funsoft_device);
  79         return retval;
  80 }
  81
  82 static void __exit funsoft_exit(void)
  83 {
  84         usb_deregister(&funsoft_driver);
  85         usb_serial_deregister(&funsoft_device);
  86 }
  87
  88 module_init(funsoft_init);
  89 module_exit(funsoft_exit);
  90 MODULE_LICENSE("GPL");
  91
  92 module_param(debug, bool, S_IRUGO | S_IWUSR);
  93 MODULE_PARM_DESC(debug, "Debug enabled or not");