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USB: kobil: fix memory leak
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / usb / serial / kobil_sct.c
blob9d99e682f96d0794ed9fd7600d1d1f6e1a60a144
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 <linux/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_release(struct usb_serial *serial);
73 static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port);
74 static void kobil_close(struct usb_serial_port *port);
75 static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
76 const unsigned char *buf, int count);
77 static int kobil_write_room(struct tty_struct *tty);
78 static int kobil_ioctl(struct tty_struct *tty, struct file *file,
79 unsigned int cmd, unsigned long arg);
80 static int kobil_tiocmget(struct tty_struct *tty, struct file *file);
81 static int kobil_tiocmset(struct tty_struct *tty, 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 tty_struct *tty,
86 struct usb_serial_port *port, struct ktermios *old);
87 static void kobil_init_termios(struct tty_struct *tty);
88
89 static struct usb_device_id id_table [] = {
90 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
91 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
92 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
93 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) },
94 { } /* Terminating entry */
95 };
96
97
98 MODULE_DEVICE_TABLE(usb, id_table);
99
100 static struct usb_driver kobil_driver = {
101 .name = "kobil",
102 .probe = usb_serial_probe,
103 .disconnect = usb_serial_disconnect,
104 .id_table = id_table,
105 .no_dynamic_id = 1,
106 };
107
108
109 static struct usb_serial_driver kobil_device = {
110 .driver = {
111 .owner = THIS_MODULE,
112 .name = "kobil",
113 },
114 .description = "KOBIL USB smart card terminal",
115 .usb_driver = &kobil_driver,
116 .id_table = id_table,
117 .num_ports = 1,
118 .attach = kobil_startup,
119 .release = kobil_release,
120 .ioctl = kobil_ioctl,
121 .set_termios = kobil_set_termios,
122 .init_termios = kobil_init_termios,
123 .tiocmget = kobil_tiocmget,
124 .tiocmset = kobil_tiocmset,
125 .open = kobil_open,
126 .close = kobil_close,
127 .write = kobil_write,
128 .write_room = kobil_write_room,
129 .read_int_callback = kobil_read_int_callback,
130 };
131
132
133 struct kobil_private {
134 int write_int_endpoint_address;
135 int read_int_endpoint_address;
136 unsigned char buf[KOBIL_BUF_LENGTH]; /* buffer for the APDU to send */
137 int filled; /* index of the last char in buf */
138 int cur_pos; /* index of the next char to send in buf */
139 __u16 device_type;
140 };
141
142
143 static int kobil_startup(struct usb_serial *serial)
144 {
145 int i;
146 struct kobil_private *priv;
147 struct usb_device *pdev;
148 struct usb_host_config *actconfig;
149 struct usb_interface *interface;
150 struct usb_host_interface *altsetting;
151 struct usb_host_endpoint *endpoint;
152
153 priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
154 if (!priv)
155 return -ENOMEM;
156
157 priv->filled = 0;
158 priv->cur_pos = 0;
159 priv->device_type = le16_to_cpu(serial->dev->descriptor.idProduct);
160
161 switch (priv->device_type) {
162 case KOBIL_ADAPTER_B_PRODUCT_ID:
163 printk(KERN_DEBUG "KOBIL B1 PRO / KAAN PRO detected\n");
164 break;
165 case KOBIL_ADAPTER_K_PRODUCT_ID:
166 printk(KERN_DEBUG
167 "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
168 break;
169 case KOBIL_USBTWIN_PRODUCT_ID:
170 printk(KERN_DEBUG "KOBIL USBTWIN detected\n");
171 break;
172 case KOBIL_KAAN_SIM_PRODUCT_ID:
173 printk(KERN_DEBUG "KOBIL KAAN SIM detected\n");
174 break;
175 }
176 usb_set_serial_port_data(serial->port[0], priv);
177
178 /* search for the necessary endpoints */
179 pdev = serial->dev;
180 actconfig = pdev->actconfig;
181 interface = actconfig->interface[0];
182 altsetting = interface->cur_altsetting;
183 endpoint = altsetting->endpoint;
184
185 for (i = 0; i < altsetting->desc.bNumEndpoints; i++) {
186 endpoint = &altsetting->endpoint[i];
187 if (usb_endpoint_is_int_out(&endpoint->desc)) {
188 dbg("%s Found interrupt out endpoint. Address: %d",
189 __func__, endpoint->desc.bEndpointAddress);
190 priv->write_int_endpoint_address =
191 endpoint->desc.bEndpointAddress;
192 }
193 if (usb_endpoint_is_int_in(&endpoint->desc)) {
194 dbg("%s Found interrupt in endpoint. Address: %d",
195 __func__, endpoint->desc.bEndpointAddress);
196 priv->read_int_endpoint_address =
197 endpoint->desc.bEndpointAddress;
198 }
199 }
200 return 0;
201 }
202
203
204 static void kobil_release(struct usb_serial *serial)
205 {
206 int i;
207 dbg("%s - port %d", __func__, serial->port[0]->number);
208
209 for (i = 0; i < serial->num_ports; ++i)
210 kfree(usb_get_serial_port_data(serial->port[i]));
211 }
212
213 static void kobil_init_termios(struct tty_struct *tty)
214 {
215 /* Default to echo off and other sane device settings */
216 tty->termios->c_lflag = 0;
217 tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
218 tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
219 /* do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D) */
220 tty->termios->c_oflag &= ~ONLCR;
221 }
222
223 static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port)
224 {
225 int result = 0;
226 struct kobil_private *priv;
227 unsigned char *transfer_buffer;
228 int transfer_buffer_length = 8;
229 int write_urb_transfer_buffer_length = 8;
230
231 dbg("%s - port %d", __func__, port->number);
232 priv = usb_get_serial_port_data(port);
233
234 /* someone sets the dev to 0 if the close method has been called */
235 port->interrupt_in_urb->dev = port->serial->dev;
236
237 /* allocate memory for transfer buffer */
238 transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
239 if (!transfer_buffer)
240 return -ENOMEM;
241
242 /* allocate write_urb */
243 if (!port->write_urb) {
244 dbg("%s - port %d Allocating port->write_urb",
245 __func__, port->number);
246 port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
247 if (!port->write_urb) {
248 dbg("%s - port %d usb_alloc_urb failed",
249 __func__, port->number);
250 kfree(transfer_buffer);
251 return -ENOMEM;
252 }
253 }
254
255 /* allocate memory for write_urb transfer buffer */
256 port->write_urb->transfer_buffer =
257 kmalloc(write_urb_transfer_buffer_length, GFP_KERNEL);
258 if (!port->write_urb->transfer_buffer) {
259 kfree(transfer_buffer);
260 usb_free_urb(port->write_urb);
261 port->write_urb = NULL;
262 return -ENOMEM;
263 }
264
265 /* get hardware version */
266 result = usb_control_msg(port->serial->dev,
267 usb_rcvctrlpipe(port->serial->dev, 0),
268 SUSBCRequest_GetMisc,
269 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
270 SUSBCR_MSC_GetHWVersion,
271 0,
272 transfer_buffer,
273 transfer_buffer_length,
274 KOBIL_TIMEOUT
275 );
276 dbg("%s - port %d Send get_HW_version URB returns: %i",
277 __func__, port->number, result);
278 dbg("Harware version: %i.%i.%i",
279 transfer_buffer[0], transfer_buffer[1], transfer_buffer[2]);
280
281 /* get firmware version */
282 result = usb_control_msg(port->serial->dev,
283 usb_rcvctrlpipe(port->serial->dev, 0),
284 SUSBCRequest_GetMisc,
285 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
286 SUSBCR_MSC_GetFWVersion,
287 0,
288 transfer_buffer,
289 transfer_buffer_length,
290 KOBIL_TIMEOUT
291 );
292 dbg("%s - port %d Send get_FW_version URB returns: %i",
293 __func__, port->number, result);
294 dbg("Firmware version: %i.%i.%i",
295 transfer_buffer[0], transfer_buffer[1], transfer_buffer[2]);
296
297 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
298 priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
299 /* Setting Baudrate, Parity and Stopbits */
300 result = usb_control_msg(port->serial->dev,
301 usb_rcvctrlpipe(port->serial->dev, 0),
302 SUSBCRequest_SetBaudRateParityAndStopBits,
303 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
304 SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity |
305 SUSBCR_SPASB_1StopBit,
306 0,
307 transfer_buffer,
308 0,
309 KOBIL_TIMEOUT
310 );
311 dbg("%s - port %d Send set_baudrate URB returns: %i",
312 __func__, port->number, result);
313
314 /* reset all queues */
315 result = usb_control_msg(port->serial->dev,
316 usb_rcvctrlpipe(port->serial->dev, 0),
317 SUSBCRequest_Misc,
318 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
319 SUSBCR_MSC_ResetAllQueues,
320 0,
321 transfer_buffer,
322 0,
323 KOBIL_TIMEOUT
324 );
325 dbg("%s - port %d Send reset_all_queues URB returns: %i",
326 __func__, port->number, result);
327 }
328 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
329 priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
330 priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
331 /* start reading (Adapter B 'cause PNP string) */
332 result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
333 dbg("%s - port %d Send read URB returns: %i",
334 __func__, port->number, result);
335 }
336
337 kfree(transfer_buffer);
338 return 0;
339 }
340
341
342 static void kobil_close(struct usb_serial_port *port)
343 {
344 dbg("%s - port %d", __func__, port->number);
345
346 /* FIXME: Add rts/dtr methods */
347 if (port->write_urb) {
348 usb_poison_urb(port->write_urb);
349 kfree(port->write_urb->transfer_buffer);
350 usb_free_urb(port->write_urb);
351 port->write_urb = NULL;
352 }
353 usb_kill_urb(port->interrupt_in_urb);
354 }
355
356
357 static void kobil_read_int_callback(struct urb *urb)
358 {
359 int result;
360 struct usb_serial_port *port = urb->context;
361 struct tty_struct *tty;
362 unsigned char *data = urb->transfer_buffer;
363 int status = urb->status;
364 /* char *dbg_data; */
365
366 dbg("%s - port %d", __func__, port->number);
367
368 if (status) {
369 dbg("%s - port %d Read int status not zero: %d",
370 __func__, port->number, status);
371 return;
372 }
373
374 tty = tty_port_tty_get(&port->port);
375 if (urb->actual_length) {
376
377 /* BEGIN DEBUG */
378 /*
379 dbg_data = kzalloc((3 * purb->actual_length + 10)
380 * sizeof(char), GFP_KERNEL);
381 if (! dbg_data) {
382 return;
383 }
384 for (i = 0; i < purb->actual_length; i++) {
385 sprintf(dbg_data +3*i, "%02X ", data[i]);
386 }
387 dbg(" <-- %s", dbg_data);
388 kfree(dbg_data);
389 */
390 /* END DEBUG */
391
392 tty_buffer_request_room(tty, urb->actual_length);
393 tty_insert_flip_string(tty, data, urb->actual_length);
394 tty_flip_buffer_push(tty);
395 }
396 tty_kref_put(tty);
397 /* someone sets the dev to 0 if the close method has been called */
398 port->interrupt_in_urb->dev = port->serial->dev;
399
400 result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
401 dbg("%s - port %d Send read URB returns: %i",
402 __func__, port->number, result);
403 }
404
405
406 static void kobil_write_callback(struct urb *purb)
407 {
408 }
409
410
411 static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
412 const unsigned char *buf, int count)
413 {
414 int length = 0;
415 int result = 0;
416 int todo = 0;
417 struct kobil_private *priv;
418
419 if (count == 0) {
420 dbg("%s - port %d write request of 0 bytes",
421 __func__, port->number);
422 return 0;
423 }
424
425 priv = usb_get_serial_port_data(port);
426
427 if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
428 dbg("%s - port %d Error: write request bigger than buffer size", __func__, port->number);
429 return -ENOMEM;
430 }
431
432 /* Copy data to buffer */
433 memcpy(priv->buf + priv->filled, buf, count);
434 usb_serial_debug_data(debug, &port->dev, __func__, count,
435 priv->buf + priv->filled);
436 priv->filled = priv->filled + count;
437
438 /* only send complete block. TWIN, KAAN SIM and adapter K
439 use the same protocol. */
440 if (((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
441 ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4)))) {
442 /* stop reading (except TWIN and KAAN SIM) */
443 if ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID)
444 || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID))
445 usb_kill_urb(port->interrupt_in_urb);
446
447 todo = priv->filled - priv->cur_pos;
448
449 while (todo > 0) {
450 /* max 8 byte in one urb (endpoint size) */
451 length = (todo < 8) ? todo : 8;
452 /* copy data to transfer buffer */
453 memcpy(port->write_urb->transfer_buffer,
454 priv->buf + priv->cur_pos, length);
455 usb_fill_int_urb(port->write_urb,
456 port->serial->dev,
457 usb_sndintpipe(port->serial->dev,
458 priv->write_int_endpoint_address),
459 port->write_urb->transfer_buffer,
460 length,
461 kobil_write_callback,
462 port,
463 8
464 );
465
466 priv->cur_pos = priv->cur_pos + length;
467 result = usb_submit_urb(port->write_urb, GFP_NOIO);
468 dbg("%s - port %d Send write URB returns: %i",
469 __func__, port->number, result);
470 todo = priv->filled - priv->cur_pos;
471
472 if (todo > 0)
473 msleep(24);
474 }
475
476 priv->filled = 0;
477 priv->cur_pos = 0;
478
479 /* someone sets the dev to 0 if the close method
480 has been called */
481 port->interrupt_in_urb->dev = port->serial->dev;
482
483 /* start reading (except TWIN and KAAN SIM) */
484 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
485 priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
486 /* someone sets the dev to 0 if the close method has
487 been called */
488 port->interrupt_in_urb->dev = port->serial->dev;
489
490 result = usb_submit_urb(port->interrupt_in_urb,
491 GFP_NOIO);
492 dbg("%s - port %d Send read URB returns: %i",
493 __func__, port->number, result);
494 }
495 }
496 return count;
497 }
498
499
500 static int kobil_write_room(struct tty_struct *tty)
501 {
502 /* dbg("%s - port %d", __func__, port->number); */
503 /* FIXME */
504 return 8;
505 }
506
507
508 static int kobil_tiocmget(struct tty_struct *tty, struct file *file)
509 {
510 struct usb_serial_port *port = tty->driver_data;
511 struct kobil_private *priv;
512 int result;
513 unsigned char *transfer_buffer;
514 int transfer_buffer_length = 8;
515
516 priv = usb_get_serial_port_data(port);
517 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
518 || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
519 /* This device doesn't support ioctl calls */
520 return -EINVAL;
521 }
522
523 /* allocate memory for transfer buffer */
524 transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
525 if (!transfer_buffer)
526 return -ENOMEM;
527
528 result = usb_control_msg(port->serial->dev,
529 usb_rcvctrlpipe(port->serial->dev, 0),
530 SUSBCRequest_GetStatusLineState,
531 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
532 0,
533 0,
534 transfer_buffer,
535 transfer_buffer_length,
536 KOBIL_TIMEOUT);
537
538 dbg("%s - port %d Send get_status_line_state URB returns: %i. Statusline: %02x",
539 __func__, port->number, result, transfer_buffer[0]);
540
541 result = 0;
542 if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0)
543 result = TIOCM_DSR;
544 kfree(transfer_buffer);
545 return result;
546 }
547
548 static int kobil_tiocmset(struct tty_struct *tty, struct file *file,
549 unsigned int set, unsigned int clear)
550 {
551 struct usb_serial_port *port = tty->driver_data;
552 struct kobil_private *priv;
553 int result;
554 int dtr = 0;
555 int rts = 0;
556 unsigned char *transfer_buffer;
557 int transfer_buffer_length = 8;
558
559 /* FIXME: locking ? */
560 priv = usb_get_serial_port_data(port);
561 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
562 || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
563 /* This device doesn't support ioctl calls */
564 return -EINVAL;
565 }
566
567 /* allocate memory for transfer buffer */
568 transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
569 if (!transfer_buffer)
570 return -ENOMEM;
571
572 if (set & TIOCM_RTS)
573 rts = 1;
574 if (set & TIOCM_DTR)
575 dtr = 1;
576 if (clear & TIOCM_RTS)
577 rts = 0;
578 if (clear & TIOCM_DTR)
579 dtr = 0;
580
581 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
582 if (dtr != 0)
583 dbg("%s - port %d Setting DTR",
584 __func__, port->number);
585 else
586 dbg("%s - port %d Clearing DTR",
587 __func__, port->number);
588 result = usb_control_msg(port->serial->dev,
589 usb_rcvctrlpipe(port->serial->dev, 0),
590 SUSBCRequest_SetStatusLinesOrQueues,
591 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
592 ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
593 0,
594 transfer_buffer,
595 0,
596 KOBIL_TIMEOUT);
597 } else {
598 if (rts != 0)
599 dbg("%s - port %d Setting RTS",
600 __func__, port->number);
601 else
602 dbg("%s - port %d Clearing RTS",
603 __func__, port->number);
604 result = usb_control_msg(port->serial->dev,
605 usb_rcvctrlpipe(port->serial->dev, 0),
606 SUSBCRequest_SetStatusLinesOrQueues,
607 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
608 ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
609 0,
610 transfer_buffer,
611 0,
612 KOBIL_TIMEOUT);
613 }
614 dbg("%s - port %d Send set_status_line URB returns: %i",
615 __func__, port->number, result);
616 kfree(transfer_buffer);
617 return (result < 0) ? result : 0;
618 }
619
620 static void kobil_set_termios(struct tty_struct *tty,
621 struct usb_serial_port *port, struct ktermios *old)
622 {
623 struct kobil_private *priv;
624 int result;
625 unsigned short urb_val = 0;
626 int c_cflag = tty->termios->c_cflag;
627 speed_t speed;
628 void *settings;
629
630 priv = usb_get_serial_port_data(port);
631 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
632 priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
633 /* This device doesn't support ioctl calls */
634 *tty->termios = *old;
635 return;
636 }
637
638 speed = tty_get_baud_rate(tty);
639 switch (speed) {
640 case 1200:
641 urb_val = SUSBCR_SBR_1200;
642 break;
643 default:
644 speed = 9600;
645 case 9600:
646 urb_val = SUSBCR_SBR_9600;
647 break;
648 }
649 urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits :
650 SUSBCR_SPASB_1StopBit;
651
652 settings = kzalloc(50, GFP_KERNEL);
653 if (!settings)
654 return;
655
656 sprintf(settings, "%d ", speed);
657
658 if (c_cflag & PARENB) {
659 if (c_cflag & PARODD) {
660 urb_val |= SUSBCR_SPASB_OddParity;
661 strcat(settings, "Odd Parity");
662 } else {
663 urb_val |= SUSBCR_SPASB_EvenParity;
664 strcat(settings, "Even Parity");
665 }
666 } else {
667 urb_val |= SUSBCR_SPASB_NoParity;
668 strcat(settings, "No Parity");
669 }
670 tty->termios->c_cflag &= ~CMSPAR;
671 tty_encode_baud_rate(tty, speed, speed);
672
673 result = usb_control_msg(port->serial->dev,
674 usb_rcvctrlpipe(port->serial->dev, 0),
675 SUSBCRequest_SetBaudRateParityAndStopBits,
676 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
677 urb_val,
678 0,
679 settings,
680 0,
681 KOBIL_TIMEOUT
682 );
683 kfree(settings);
684 }
685
686 static int kobil_ioctl(struct tty_struct *tty, struct file *file,
687 unsigned int cmd, unsigned long arg)
688 {
689 struct usb_serial_port *port = tty->driver_data;
690 struct kobil_private *priv = usb_get_serial_port_data(port);
691 unsigned char *transfer_buffer;
692 int transfer_buffer_length = 8;
693 int result;
694
695 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
696 priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
697 /* This device doesn't support ioctl calls */
698 return -ENOIOCTLCMD;
699
700 switch (cmd) {
701 case TCFLSH:
702 transfer_buffer = kmalloc(transfer_buffer_length, GFP_KERNEL);
703 if (!transfer_buffer)
704 return -ENOBUFS;
705
706 result = usb_control_msg(port->serial->dev,
707 usb_rcvctrlpipe(port->serial->dev, 0),
708 SUSBCRequest_Misc,
709 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
710 SUSBCR_MSC_ResetAllQueues,
711 0,
712 NULL, /* transfer_buffer, */
713 0,
714 KOBIL_TIMEOUT
715 );
716
717 dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __func__, port->number, result);
718 kfree(transfer_buffer);
719 return (result < 0) ? -EIO: 0;
720 default:
721 return -ENOIOCTLCMD;
722 }
723 }
724
725 static int __init kobil_init(void)
726 {
727 int retval;
728 retval = usb_serial_register(&kobil_device);
729 if (retval)
730 goto failed_usb_serial_register;
731 retval = usb_register(&kobil_driver);
732 if (retval)
733 goto failed_usb_register;
734
735 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
736 DRIVER_DESC "\n");
737
738 return 0;
739 failed_usb_register:
740 usb_serial_deregister(&kobil_device);
741 failed_usb_serial_register:
742 return retval;
743 }
744
745
746 static void __exit kobil_exit(void)
747 {
748 usb_deregister(&kobil_driver);
749 usb_serial_deregister(&kobil_device);
750 }
751
752 module_init(kobil_init);
753 module_exit(kobil_exit);
754
755 MODULE_AUTHOR(DRIVER_AUTHOR);
756 MODULE_DESCRIPTION(DRIVER_DESC);
757 MODULE_LICENSE("GPL");
758
759 module_param(debug, bool, S_IRUGO | S_IWUSR);
760 MODULE_PARM_DESC(debug, "Debug enabled or not");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree