USB: replace remaining __FUNCTION__ occurrences
[linux-2.6] / drivers / usb / serial / kobil_sct.c
1 /*
2  *  KOBIL USB Smart Card Terminal Driver
3  *
4  *  Copyright (C) 2002  KOBIL Systems GmbH 
5  *  Author: Thomas Wahrenbruch
6  *
7  *  Contact: linuxusb@kobil.de
8  *
9  *  This program is largely derived from work by the linux-usb group
10  *  and associated source files.  Please see the usb/serial files for
11  *  individual credits and copyrights.
12  *
13  *  This program is free software; you can redistribute it and/or modify
14  *  it under the terms of the GNU General Public License as published by
15  *  the Free Software Foundation; either version 2 of the License, or
16  *  (at your option) any later version.
17  *
18  *  Thanks to Greg Kroah-Hartman (greg@kroah.com) for his help and
19  *  patience.
20  *
21  * Supported readers: USB TWIN, KAAN Standard Plus and SecOVID Reader Plus
22  * (Adapter K), B1 Professional and KAAN Professional (Adapter B)
23  * 
24  * (21/05/2004) tw
25  *      Fix bug with P'n'P readers
26  *
27  * (28/05/2003) tw
28  *      Add support for KAAN SIM
29  *
30  * (12/09/2002) tw
31  *      Adapted to 2.5.
32  *
33  * (11/08/2002) tw
34  *      Initial version.
35  */
36
37
38 #include <linux/kernel.h>
39 #include <linux/errno.h>
40 #include <linux/init.h>
41 #include <linux/slab.h>
42 #include <linux/tty.h>
43 #include <linux/tty_driver.h>
44 #include <linux/tty_flip.h>
45 #include <linux/module.h>
46 #include <linux/spinlock.h>
47 #include <asm/uaccess.h>
48 #include <linux/usb.h>
49 #include <linux/usb/serial.h>
50 #include <linux/ioctl.h>
51 #include "kobil_sct.h"
52
53 static int debug;
54
55 /* Version Information */
56 #define DRIVER_VERSION "21/05/2004"
57 #define DRIVER_AUTHOR "KOBIL Systems GmbH - http://www.kobil.com"
58 #define DRIVER_DESC "KOBIL USB Smart Card Terminal Driver (experimental)"
59
60 #define KOBIL_VENDOR_ID                 0x0D46
61 #define KOBIL_ADAPTER_B_PRODUCT_ID      0x2011
62 #define KOBIL_ADAPTER_K_PRODUCT_ID      0x2012
63 #define KOBIL_USBTWIN_PRODUCT_ID        0x0078
64 #define KOBIL_KAAN_SIM_PRODUCT_ID       0x0081
65
66 #define KOBIL_TIMEOUT           500
67 #define KOBIL_BUF_LENGTH        300
68
69
70 /* Function prototypes */
71 static int  kobil_startup (struct usb_serial *serial);
72 static void kobil_shutdown (struct usb_serial *serial);
73 static int  kobil_open (struct usb_serial_port *port, struct file *filp);
74 static void kobil_close (struct usb_serial_port *port, struct file *filp);
75 static int  kobil_write (struct usb_serial_port *port, 
76                          const unsigned char *buf, int count);
77 static int  kobil_write_room(struct usb_serial_port *port);
78 static int  kobil_ioctl(struct usb_serial_port *port, struct file *file,
79                         unsigned int cmd, unsigned long arg);
80 static int  kobil_tiocmget(struct usb_serial_port *port, struct file *file);
81 static int  kobil_tiocmset(struct usb_serial_port *port, struct file *file,
82                            unsigned int set, unsigned int clear);
83 static void kobil_read_int_callback( struct urb *urb );
84 static void kobil_write_callback( struct urb *purb );
85 static void kobil_set_termios(struct usb_serial_port *port, struct ktermios *old);
86
87
88 static struct usb_device_id id_table [] = {
89         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
90         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
91         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
92         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) },
93         { }                     /* Terminating entry */
94 };
95
96
97 MODULE_DEVICE_TABLE (usb, id_table);
98
99 static struct usb_driver kobil_driver = {
100         .name =         "kobil",
101         .probe =        usb_serial_probe,
102         .disconnect =   usb_serial_disconnect,
103         .id_table =     id_table,
104         .no_dynamic_id =        1,
105 };
106
107
108 static struct usb_serial_driver kobil_device = {
109         .driver = {
110                 .owner =        THIS_MODULE,
111                 .name =         "kobil",
112         },
113         .description =          "KOBIL USB smart card terminal",
114         .usb_driver =           &kobil_driver,
115         .id_table =             id_table,
116         .num_ports =            1,
117         .attach =               kobil_startup,
118         .shutdown =             kobil_shutdown,
119         .ioctl =                kobil_ioctl,
120         .set_termios =          kobil_set_termios,
121         .tiocmget =             kobil_tiocmget,
122         .tiocmset =             kobil_tiocmset,
123         .open =                 kobil_open,
124         .close =                kobil_close,
125         .write =                kobil_write,
126         .write_room =           kobil_write_room,
127         .read_int_callback =    kobil_read_int_callback,
128 };
129
130
131 struct kobil_private {
132         int write_int_endpoint_address;
133         int read_int_endpoint_address;
134         unsigned char buf[KOBIL_BUF_LENGTH]; // buffer for the APDU to send
135         int filled;  // index of the last char in buf
136         int cur_pos; // index of the next char to send in buf
137         __u16 device_type;
138 };
139
140
141 static int kobil_startup (struct usb_serial *serial)
142 {
143         int i;
144         struct kobil_private *priv;
145         struct usb_device *pdev;
146         struct usb_host_config *actconfig;
147         struct usb_interface *interface;
148         struct usb_host_interface *altsetting;
149         struct usb_host_endpoint *endpoint;
150
151         priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
152         if (!priv){
153                 return -ENOMEM;
154         }
155
156         priv->filled = 0;
157         priv->cur_pos = 0;
158         priv->device_type = le16_to_cpu(serial->dev->descriptor.idProduct);
159
160         switch (priv->device_type){
161         case KOBIL_ADAPTER_B_PRODUCT_ID:
162                 printk(KERN_DEBUG "KOBIL B1 PRO / KAAN PRO detected\n");
163                 break;
164         case KOBIL_ADAPTER_K_PRODUCT_ID:
165                 printk(KERN_DEBUG "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
166                 break;
167         case KOBIL_USBTWIN_PRODUCT_ID:
168                 printk(KERN_DEBUG "KOBIL USBTWIN detected\n");
169                 break;
170         case KOBIL_KAAN_SIM_PRODUCT_ID:
171                 printk(KERN_DEBUG "KOBIL KAAN SIM detected\n");
172                 break;
173         }
174         usb_set_serial_port_data(serial->port[0], priv);
175
176         // search for the necessary endpoints
177         pdev = serial->dev;
178         actconfig = pdev->actconfig;
179         interface = actconfig->interface[0];
180         altsetting = interface->cur_altsetting;
181         endpoint = altsetting->endpoint;
182   
183         for (i = 0; i < altsetting->desc.bNumEndpoints; i++) {
184                 endpoint = &altsetting->endpoint[i];
185                 if (usb_endpoint_is_int_out(&endpoint->desc)) {
186                         dbg("%s Found interrupt out endpoint. Address: %d", __func__, endpoint->desc.bEndpointAddress);
187                         priv->write_int_endpoint_address = endpoint->desc.bEndpointAddress;
188                 }
189                 if (usb_endpoint_is_int_in(&endpoint->desc)) {
190                         dbg("%s Found interrupt in  endpoint. Address: %d", __func__, endpoint->desc.bEndpointAddress);
191                         priv->read_int_endpoint_address = endpoint->desc.bEndpointAddress;
192                 }
193         }
194         return 0;
195 }
196
197
198 static void kobil_shutdown (struct usb_serial *serial)
199 {
200         int i;
201         dbg("%s - port %d", __func__, serial->port[0]->number);
202
203         for (i=0; i < serial->num_ports; ++i) {
204                 while (serial->port[i]->open_count > 0) {
205                         kobil_close (serial->port[i], NULL);
206                 }
207                 kfree(usb_get_serial_port_data(serial->port[i]));
208                 usb_set_serial_port_data(serial->port[i], NULL);
209         }
210 }
211
212
213 static int kobil_open (struct usb_serial_port *port, struct file *filp)
214 {
215         int result = 0;
216         struct kobil_private *priv;
217         unsigned char *transfer_buffer;
218         int transfer_buffer_length = 8;
219         int write_urb_transfer_buffer_length = 8;
220
221         dbg("%s - port %d", __func__, port->number);
222         priv = usb_get_serial_port_data(port);
223
224         // someone sets the dev to 0 if the close method has been called
225         port->interrupt_in_urb->dev = port->serial->dev;
226
227
228         /* force low_latency on so that our tty_push actually forces
229          * the data through, otherwise it is scheduled, and with high
230          * data rates (like with OHCI) data can get lost.
231          */
232         port->tty->low_latency = 1;
233
234         // without this, every push_tty_char is echoed :-(  
235         port->tty->termios->c_lflag = 0;
236         port->tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
237         port->tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
238         port->tty->termios->c_oflag &= ~ONLCR; // do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D)
239         
240         // allocate memory for transfer buffer
241         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
242         if (! transfer_buffer) {
243                 return -ENOMEM;
244         }
245         
246         // allocate write_urb
247         if (!port->write_urb) { 
248                 dbg("%s - port %d  Allocating port->write_urb", __func__, port->number);
249                 port->write_urb = usb_alloc_urb(0, GFP_KERNEL);  
250                 if (!port->write_urb) {
251                         dbg("%s - port %d usb_alloc_urb failed", __func__, port->number);
252                         kfree(transfer_buffer);
253                         return -ENOMEM;
254                 }
255         }
256
257         // allocate memory for write_urb transfer buffer
258         port->write_urb->transfer_buffer = kmalloc(write_urb_transfer_buffer_length, GFP_KERNEL);
259         if (! port->write_urb->transfer_buffer) {
260                 kfree(transfer_buffer);
261                 usb_free_urb(port->write_urb);
262                 port->write_urb = NULL;
263                 return -ENOMEM;
264         } 
265
266         // get hardware version
267         result = usb_control_msg( port->serial->dev, 
268                                   usb_rcvctrlpipe(port->serial->dev, 0 ), 
269                                   SUSBCRequest_GetMisc,
270                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
271                                   SUSBCR_MSC_GetHWVersion,
272                                   0,
273                                   transfer_buffer,
274                                   transfer_buffer_length,
275                                   KOBIL_TIMEOUT
276                 );
277         dbg("%s - port %d Send get_HW_version URB returns: %i", __func__, port->number, result);
278         dbg("Harware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
279         
280         // get firmware version
281         result = usb_control_msg( port->serial->dev, 
282                                   usb_rcvctrlpipe(port->serial->dev, 0 ), 
283                                   SUSBCRequest_GetMisc,
284                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
285                                   SUSBCR_MSC_GetFWVersion,
286                                   0,
287                                   transfer_buffer,
288                                   transfer_buffer_length,
289                                   KOBIL_TIMEOUT
290                 );
291         dbg("%s - port %d Send get_FW_version URB returns: %i", __func__, port->number, result);
292         dbg("Firmware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
293
294         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
295                 // Setting Baudrate, Parity and Stopbits
296                 result = usb_control_msg( port->serial->dev, 
297                                           usb_rcvctrlpipe(port->serial->dev, 0 ), 
298                                           SUSBCRequest_SetBaudRateParityAndStopBits,
299                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
300                                           SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity | SUSBCR_SPASB_1StopBit,
301                                           0,
302                                           transfer_buffer,
303                                           0,
304                                           KOBIL_TIMEOUT
305                         );
306                 dbg("%s - port %d Send set_baudrate URB returns: %i", __func__, port->number, result);
307                 
308                 // reset all queues
309                 result = usb_control_msg( port->serial->dev, 
310                                           usb_rcvctrlpipe(port->serial->dev, 0 ), 
311                                           SUSBCRequest_Misc,
312                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
313                                           SUSBCR_MSC_ResetAllQueues,
314                                           0,
315                                           transfer_buffer,
316                                           0,
317                                           KOBIL_TIMEOUT
318                         );
319                 dbg("%s - port %d Send reset_all_queues URB returns: %i", __func__, port->number, result);
320         }
321         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
322             priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
323                 // start reading (Adapter B 'cause PNP string)
324                 result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC  ); 
325                 dbg("%s - port %d Send read URB returns: %i", __func__, port->number, result);
326         }
327
328         kfree(transfer_buffer);
329         return 0;
330 }
331
332
333 static void kobil_close (struct usb_serial_port *port, struct file *filp)
334 {
335         dbg("%s - port %d", __func__, port->number);
336
337         if (port->write_urb) {
338                 usb_kill_urb(port->write_urb);
339                 usb_free_urb( port->write_urb );
340                 port->write_urb = NULL;
341         }
342         usb_kill_urb(port->interrupt_in_urb);
343 }
344
345
346 static void kobil_read_int_callback(struct urb *urb)
347 {
348         int result;
349         struct usb_serial_port *port = urb->context;
350         struct tty_struct *tty;
351         unsigned char *data = urb->transfer_buffer;
352         int status = urb->status;
353 //      char *dbg_data;
354
355         dbg("%s - port %d", __func__, port->number);
356
357         if (status) {
358                 dbg("%s - port %d Read int status not zero: %d",
359                     __func__, port->number, status);
360                 return;
361         }
362
363         tty = port->tty;
364         if (urb->actual_length) {
365
366                 // BEGIN DEBUG
367                 /*
368                   dbg_data = kzalloc((3 *  purb->actual_length + 10) * sizeof(char), GFP_KERNEL);
369                   if (! dbg_data) {
370                   return;
371                   }
372                   for (i = 0; i < purb->actual_length; i++) { 
373                   sprintf(dbg_data +3*i, "%02X ", data[i]); 
374                   }
375                   dbg(" <-- %s", dbg_data );
376                   kfree(dbg_data);
377                 */
378                 // END DEBUG
379
380                 tty_buffer_request_room(tty, urb->actual_length);
381                 tty_insert_flip_string(tty, data, urb->actual_length);
382                 tty_flip_buffer_push(tty);
383         }
384
385         // someone sets the dev to 0 if the close method has been called
386         port->interrupt_in_urb->dev = port->serial->dev;
387
388         result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
389         dbg("%s - port %d Send read URB returns: %i", __func__, port->number, result);
390 }
391
392
393 static void kobil_write_callback( struct urb *purb )
394 {
395 }
396
397
398 static int kobil_write (struct usb_serial_port *port, 
399                         const unsigned char *buf, int count)
400 {
401         int length = 0;
402         int result = 0;
403         int todo = 0;
404         struct kobil_private * priv;
405
406         if (count == 0) {
407                 dbg("%s - port %d write request of 0 bytes", __func__, port->number);
408                 return 0;
409         }
410
411         priv = usb_get_serial_port_data(port);
412
413         if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
414                 dbg("%s - port %d Error: write request bigger than buffer size", __func__, port->number);
415                 return -ENOMEM;
416         }
417
418         // Copy data to buffer
419         memcpy (priv->buf + priv->filled, buf, count);
420
421         usb_serial_debug_data(debug, &port->dev, __func__, count, priv->buf + priv->filled);
422
423         priv->filled = priv->filled + count;
424
425
426         // only send complete block. TWIN, KAAN SIM and adapter K use the same protocol.
427         if ( ((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) || 
428              ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4))) ) {
429                 
430                 // stop reading (except TWIN and KAAN SIM)
431                 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) )
432                         usb_kill_urb(port->interrupt_in_urb);
433
434                 todo = priv->filled - priv->cur_pos;
435
436                 while(todo > 0) {
437                         // max 8 byte in one urb (endpoint size)
438                         length = (todo < 8) ? todo : 8;
439                         // copy data to transfer buffer
440                         memcpy(port->write_urb->transfer_buffer, priv->buf + priv->cur_pos, length );
441                         usb_fill_int_urb( port->write_urb,
442                                           port->serial->dev,
443                                           usb_sndintpipe(port->serial->dev, priv->write_int_endpoint_address),
444                                           port->write_urb->transfer_buffer,
445                                           length,
446                                           kobil_write_callback,
447                                           port,
448                                           8
449                                 );
450
451                         priv->cur_pos = priv->cur_pos + length;
452                         result = usb_submit_urb( port->write_urb, GFP_NOIO );
453                         dbg("%s - port %d Send write URB returns: %i", __func__, port->number, result);
454                         todo = priv->filled - priv->cur_pos;
455
456                         if (todo > 0) {
457                                 msleep(24);
458                         }
459
460                 } // end while
461                 
462                 priv->filled = 0;
463                 priv->cur_pos = 0;
464
465                 // someone sets the dev to 0 if the close method has been called
466                 port->interrupt_in_urb->dev = port->serial->dev;
467                 
468                 // start reading (except TWIN and KAAN SIM)
469                 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) ) {
470                         // someone sets the dev to 0 if the close method has been called
471                         port->interrupt_in_urb->dev = port->serial->dev;
472                         
473                         result = usb_submit_urb( port->interrupt_in_urb, GFP_NOIO ); 
474                         dbg("%s - port %d Send read URB returns: %i", __func__, port->number, result);
475                 }
476         }
477         return count;
478 }
479
480
481 static int kobil_write_room (struct usb_serial_port *port)
482 {
483         //dbg("%s - port %d", __func__, port->number);
484         return 8;
485 }
486
487
488 static int kobil_tiocmget(struct usb_serial_port *port, struct file *file)
489 {
490         struct kobil_private * priv;
491         int result;
492         unsigned char *transfer_buffer;
493         int transfer_buffer_length = 8;
494
495         priv = usb_get_serial_port_data(port);
496         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
497                 // This device doesn't support ioctl calls
498                 return -EINVAL;
499         }
500
501         // allocate memory for transfer buffer
502         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
503         if (!transfer_buffer) {
504                 return -ENOMEM;
505         }
506
507         result = usb_control_msg( port->serial->dev, 
508                                   usb_rcvctrlpipe(port->serial->dev, 0 ), 
509                                   SUSBCRequest_GetStatusLineState,
510                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
511                                   0,
512                                   0,
513                                   transfer_buffer,
514                                   transfer_buffer_length,
515                                   KOBIL_TIMEOUT);
516
517         dbg("%s - port %d Send get_status_line_state URB returns: %i. Statusline: %02x", 
518             __func__, port->number, result, transfer_buffer[0]);
519
520         result = 0;
521         if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0)
522                 result = TIOCM_DSR;
523         kfree(transfer_buffer);
524         return result;
525 }
526
527 static int  kobil_tiocmset(struct usb_serial_port *port, struct file *file,
528                            unsigned int set, unsigned int clear)
529 {
530         struct kobil_private * priv;
531         int result;
532         int dtr = 0;
533         int rts = 0;
534         unsigned char *transfer_buffer;
535         int transfer_buffer_length = 8;
536
537         /* FIXME: locking ? */
538         priv = usb_get_serial_port_data(port);
539         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
540                 // This device doesn't support ioctl calls
541                 return -EINVAL;
542         }
543
544         // allocate memory for transfer buffer
545         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
546         if (! transfer_buffer) {
547                 return -ENOMEM;
548         }
549
550         if (set & TIOCM_RTS)
551                 rts = 1;
552         if (set & TIOCM_DTR)
553                 dtr = 1;
554         if (clear & TIOCM_RTS)
555                 rts = 0;
556         if (clear & TIOCM_DTR)
557                 dtr = 0;
558
559         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
560                 if (dtr != 0)
561                         dbg("%s - port %d Setting DTR", __func__, port->number);
562                 else
563                         dbg("%s - port %d Clearing DTR", __func__, port->number);
564                 result = usb_control_msg( port->serial->dev, 
565                                           usb_rcvctrlpipe(port->serial->dev, 0 ), 
566                                           SUSBCRequest_SetStatusLinesOrQueues,
567                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
568                                           ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
569                                           0,
570                                           transfer_buffer,
571                                           0,
572                                           KOBIL_TIMEOUT);
573         } else {
574                 if (rts != 0)
575                         dbg("%s - port %d Setting RTS", __func__, port->number);
576                 else
577                         dbg("%s - port %d Clearing RTS", __func__, port->number);
578                 result = usb_control_msg( port->serial->dev, 
579                                           usb_rcvctrlpipe(port->serial->dev, 0 ), 
580                                           SUSBCRequest_SetStatusLinesOrQueues,
581                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
582                                           ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
583                                           0,
584                                           transfer_buffer,
585                                           0,
586                                           KOBIL_TIMEOUT);
587         }
588         dbg("%s - port %d Send set_status_line URB returns: %i", __func__, port->number, result);
589         kfree(transfer_buffer);
590         return (result < 0) ? result : 0;
591 }
592
593 static void kobil_set_termios(struct usb_serial_port *port, struct ktermios *old)
594 {
595         struct kobil_private * priv;
596         int result;
597         unsigned short urb_val = 0;
598         int c_cflag = port->tty->termios->c_cflag;
599         speed_t speed;
600         void * settings;
601
602         priv = usb_get_serial_port_data(port);
603         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
604                 // This device doesn't support ioctl calls
605                 return;
606
607         switch (speed = tty_get_baud_rate(port->tty)) {
608                 case 1200:
609                         urb_val = SUSBCR_SBR_1200;
610                         break;
611                 default:
612                         speed = 9600;
613                 case 9600:
614                         urb_val = SUSBCR_SBR_9600;
615                         break;
616         }
617         urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits : SUSBCR_SPASB_1StopBit;
618
619         settings = kzalloc(50, GFP_KERNEL);
620         if (! settings)
621                 return;
622
623         sprintf(settings, "%d ", speed);
624
625         if (c_cflag & PARENB) {
626                 if  (c_cflag & PARODD) {
627                         urb_val |= SUSBCR_SPASB_OddParity;
628                         strcat(settings, "Odd Parity");
629                 } else {
630                         urb_val |= SUSBCR_SPASB_EvenParity;
631                         strcat(settings, "Even Parity");
632                 }
633         } else {
634                 urb_val |= SUSBCR_SPASB_NoParity;
635                 strcat(settings, "No Parity");
636         }
637         port->tty->termios->c_cflag &= ~CMSPAR;
638         tty_encode_baud_rate(port->tty, speed, speed);
639
640         result = usb_control_msg( port->serial->dev,
641                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
642                                   SUSBCRequest_SetBaudRateParityAndStopBits,
643                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
644                                   urb_val,
645                                   0,
646                                   settings,
647                                   0,
648                                   KOBIL_TIMEOUT
649                 );
650         kfree(settings);
651 }
652
653 static int kobil_ioctl(struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg)
654 {
655         struct kobil_private * priv = usb_get_serial_port_data(port);
656         unsigned char *transfer_buffer;
657         int transfer_buffer_length = 8;
658         int result;
659
660         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
661                 // This device doesn't support ioctl calls
662                 return 0;
663
664         switch (cmd) {
665         case TCFLSH:   // 0x540B
666                 transfer_buffer = kmalloc(transfer_buffer_length, GFP_KERNEL);
667                 if (! transfer_buffer)
668                         return -ENOBUFS;
669
670                 result = usb_control_msg( port->serial->dev, 
671                                           usb_rcvctrlpipe(port->serial->dev, 0 ), 
672                                           SUSBCRequest_Misc,
673                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
674                                           SUSBCR_MSC_ResetAllQueues,
675                                           0,
676                                           NULL,//transfer_buffer,
677                                           0,
678                                           KOBIL_TIMEOUT
679                         );
680                 
681                 dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __func__, port->number, result);
682                 kfree(transfer_buffer);
683                 return (result < 0) ? -EFAULT : 0;
684         default:
685                 return -ENOIOCTLCMD;
686         }
687 }
688
689 static int __init kobil_init (void)
690 {
691         int retval;
692         retval = usb_serial_register(&kobil_device);
693         if (retval)
694                 goto failed_usb_serial_register;
695         retval = usb_register(&kobil_driver);
696         if (retval) 
697                 goto failed_usb_register;
698
699         info(DRIVER_VERSION " " DRIVER_AUTHOR);
700         info(DRIVER_DESC);
701
702         return 0;
703 failed_usb_register:
704         usb_serial_deregister(&kobil_device);
705 failed_usb_serial_register:
706         return retval;
707 }
708
709
710 static void __exit kobil_exit (void)
711 {
712         usb_deregister (&kobil_driver);
713         usb_serial_deregister (&kobil_device);
714 }
715
716 module_init(kobil_init);
717 module_exit(kobil_exit);
718
719 MODULE_AUTHOR( DRIVER_AUTHOR );
720 MODULE_DESCRIPTION( DRIVER_DESC );
721 MODULE_LICENSE( "GPL" );
722
723 module_param(debug, bool, S_IRUGO | S_IWUSR);
724 MODULE_PARM_DESC(debug, "Debug enabled or not");