Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * REINER SCT cyberJack pinpad/e-com USB Chipcard Reader Driver | |
3 | * | |
4 | * Copyright (C) 2001 REINER SCT | |
5 | * Author: Matthias Bruestle | |
6 | * | |
7 | * Contact: support@reiner-sct.com (see MAINTAINERS) | |
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 | * In case of problems, please write to the contact e-mail address | |
22 | * mentioned above. | |
23 | * | |
24 | * Please note that later models of the cyberjack reader family are | |
25 | * supported by a libusb-based userspace device driver. | |
26 | * | |
27 | * Homepage: http://www.reiner-sct.de/support/treiber_cyberjack.php#linux | |
28 | */ | |
29 | ||
30 | ||
1da177e4 LT |
31 | #include <linux/kernel.h> |
32 | #include <linux/errno.h> | |
33 | #include <linux/init.h> | |
34 | #include <linux/slab.h> | |
35 | #include <linux/tty.h> | |
36 | #include <linux/tty_driver.h> | |
37 | #include <linux/tty_flip.h> | |
38 | #include <linux/module.h> | |
39 | #include <linux/spinlock.h> | |
b9c52f15 | 40 | #include <linux/uaccess.h> |
1da177e4 | 41 | #include <linux/usb.h> |
a969888c | 42 | #include <linux/usb/serial.h> |
1da177e4 LT |
43 | |
44 | #define CYBERJACK_LOCAL_BUF_SIZE 32 | |
45 | ||
46 | static int debug; | |
47 | ||
48 | /* | |
49 | * Version Information | |
50 | */ | |
51 | #define DRIVER_VERSION "v1.01" | |
52 | #define DRIVER_AUTHOR "Matthias Bruestle" | |
53 | #define DRIVER_DESC "REINER SCT cyberJack pinpad/e-com USB Chipcard Reader Driver" | |
54 | ||
55 | ||
56 | #define CYBERJACK_VENDOR_ID 0x0C4B | |
57 | #define CYBERJACK_PRODUCT_ID 0x0100 | |
58 | ||
59 | /* Function prototypes */ | |
95da310e AC |
60 | static int cyberjack_startup(struct usb_serial *serial); |
61 | static void cyberjack_shutdown(struct usb_serial *serial); | |
62 | static int cyberjack_open(struct tty_struct *tty, | |
63 | struct usb_serial_port *port, struct file *filp); | |
64 | static void cyberjack_close(struct tty_struct *tty, | |
65 | struct usb_serial_port *port, struct file *filp); | |
66 | static int cyberjack_write(struct tty_struct *tty, | |
67 | struct usb_serial_port *port, const unsigned char *buf, int count); | |
b9c52f15 | 68 | static int cyberjack_write_room(struct tty_struct *tty); |
95da310e AC |
69 | static void cyberjack_read_int_callback(struct urb *urb); |
70 | static void cyberjack_read_bulk_callback(struct urb *urb); | |
71 | static void cyberjack_write_bulk_callback(struct urb *urb); | |
1da177e4 LT |
72 | |
73 | static struct usb_device_id id_table [] = { | |
74 | { USB_DEVICE(CYBERJACK_VENDOR_ID, CYBERJACK_PRODUCT_ID) }, | |
75 | { } /* Terminating entry */ | |
76 | }; | |
77 | ||
b9c52f15 | 78 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 LT |
79 | |
80 | static struct usb_driver cyberjack_driver = { | |
1da177e4 LT |
81 | .name = "cyberjack", |
82 | .probe = usb_serial_probe, | |
83 | .disconnect = usb_serial_disconnect, | |
84 | .id_table = id_table, | |
ba9dc657 | 85 | .no_dynamic_id = 1, |
1da177e4 LT |
86 | }; |
87 | ||
ea65370d | 88 | static struct usb_serial_driver cyberjack_device = { |
18fcac35 GKH |
89 | .driver = { |
90 | .owner = THIS_MODULE, | |
269bda1c | 91 | .name = "cyberjack", |
18fcac35 | 92 | }, |
269bda1c | 93 | .description = "Reiner SCT Cyberjack USB card reader", |
d9b1b787 | 94 | .usb_driver = &cyberjack_driver, |
1da177e4 | 95 | .id_table = id_table, |
1da177e4 LT |
96 | .num_ports = 1, |
97 | .attach = cyberjack_startup, | |
98 | .shutdown = cyberjack_shutdown, | |
99 | .open = cyberjack_open, | |
100 | .close = cyberjack_close, | |
101 | .write = cyberjack_write, | |
d9b1b787 | 102 | .write_room = cyberjack_write_room, |
1da177e4 LT |
103 | .read_int_callback = cyberjack_read_int_callback, |
104 | .read_bulk_callback = cyberjack_read_bulk_callback, | |
105 | .write_bulk_callback = cyberjack_write_bulk_callback, | |
106 | }; | |
107 | ||
108 | struct cyberjack_private { | |
109 | spinlock_t lock; /* Lock for SMP */ | |
110 | short rdtodo; /* Bytes still to read */ | |
111 | unsigned char wrbuf[5*64]; /* Buffer for collecting data to write */ | |
112 | short wrfilled; /* Overall data size we already got */ | |
113 | short wrsent; /* Data already sent */ | |
114 | }; | |
115 | ||
116 | /* do some startup allocations not currently performed by usb_serial_probe() */ | |
95da310e | 117 | static int cyberjack_startup(struct usb_serial *serial) |
1da177e4 LT |
118 | { |
119 | struct cyberjack_private *priv; | |
120 | int i; | |
121 | ||
441b62c1 | 122 | dbg("%s", __func__); |
1da177e4 LT |
123 | |
124 | /* allocate the private data structure */ | |
125 | priv = kmalloc(sizeof(struct cyberjack_private), GFP_KERNEL); | |
126 | if (!priv) | |
127 | return -ENOMEM; | |
128 | ||
129 | /* set initial values */ | |
130 | spin_lock_init(&priv->lock); | |
131 | priv->rdtodo = 0; | |
132 | priv->wrfilled = 0; | |
133 | priv->wrsent = 0; | |
134 | usb_set_serial_port_data(serial->port[0], priv); | |
135 | ||
136 | init_waitqueue_head(&serial->port[0]->write_wait); | |
137 | ||
138 | for (i = 0; i < serial->num_ports; ++i) { | |
139 | int result; | |
140 | serial->port[i]->interrupt_in_urb->dev = serial->dev; | |
b9c52f15 | 141 | result = usb_submit_urb(serial->port[i]->interrupt_in_urb, |
1da177e4 LT |
142 | GFP_KERNEL); |
143 | if (result) | |
194343d9 GKH |
144 | dev_err(&serial->dev->dev, |
145 | "usb_submit_urb(read int) failed\n"); | |
441b62c1 | 146 | dbg("%s - usb_submit_urb(int urb)", __func__); |
1da177e4 LT |
147 | } |
148 | ||
b9c52f15 | 149 | return 0; |
1da177e4 LT |
150 | } |
151 | ||
95da310e | 152 | static void cyberjack_shutdown(struct usb_serial *serial) |
1da177e4 LT |
153 | { |
154 | int i; | |
b9c52f15 | 155 | |
441b62c1 | 156 | dbg("%s", __func__); |
1da177e4 | 157 | |
a5b6f60c | 158 | for (i = 0; i < serial->num_ports; ++i) { |
1da177e4 LT |
159 | usb_kill_urb(serial->port[i]->interrupt_in_urb); |
160 | /* My special items, the standard routines free my urbs */ | |
161 | kfree(usb_get_serial_port_data(serial->port[i])); | |
162 | usb_set_serial_port_data(serial->port[i], NULL); | |
163 | } | |
164 | } | |
b9c52f15 | 165 | |
95da310e AC |
166 | static int cyberjack_open(struct tty_struct *tty, |
167 | struct usb_serial_port *port, struct file *filp) | |
1da177e4 LT |
168 | { |
169 | struct cyberjack_private *priv; | |
170 | unsigned long flags; | |
171 | int result = 0; | |
172 | ||
441b62c1 | 173 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 174 | |
b9c52f15 | 175 | dbg("%s - usb_clear_halt", __func__); |
1da177e4 LT |
176 | usb_clear_halt(port->serial->dev, port->write_urb->pipe); |
177 | ||
178 | /* force low_latency on so that our tty_push actually forces | |
179 | * the data through, otherwise it is scheduled, and with high | |
180 | * data rates (like with OHCI) data can get lost. | |
181 | */ | |
95da310e AC |
182 | if (tty) |
183 | tty->low_latency = 1; | |
1da177e4 LT |
184 | |
185 | priv = usb_get_serial_port_data(port); | |
186 | spin_lock_irqsave(&priv->lock, flags); | |
187 | priv->rdtodo = 0; | |
188 | priv->wrfilled = 0; | |
189 | priv->wrsent = 0; | |
190 | spin_unlock_irqrestore(&priv->lock, flags); | |
191 | ||
192 | return result; | |
193 | } | |
194 | ||
95da310e AC |
195 | static void cyberjack_close(struct tty_struct *tty, |
196 | struct usb_serial_port *port, struct file *filp) | |
1da177e4 | 197 | { |
441b62c1 | 198 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
199 | |
200 | if (port->serial->dev) { | |
201 | /* shutdown any bulk reads that might be going on */ | |
202 | usb_kill_urb(port->write_urb); | |
203 | usb_kill_urb(port->read_urb); | |
204 | } | |
205 | } | |
206 | ||
95da310e AC |
207 | static int cyberjack_write(struct tty_struct *tty, |
208 | struct usb_serial_port *port, const unsigned char *buf, int count) | |
1da177e4 LT |
209 | { |
210 | struct usb_serial *serial = port->serial; | |
211 | struct cyberjack_private *priv = usb_get_serial_port_data(port); | |
212 | unsigned long flags; | |
213 | int result; | |
214 | int wrexpected; | |
215 | ||
441b62c1 | 216 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
217 | |
218 | if (count == 0) { | |
441b62c1 | 219 | dbg("%s - write request of 0 bytes", __func__); |
a5b6f60c | 220 | return 0; |
1da177e4 LT |
221 | } |
222 | ||
e81ee637 | 223 | spin_lock_bh(&port->lock); |
507ca9bc | 224 | if (port->write_urb_busy) { |
e81ee637 | 225 | spin_unlock_bh(&port->lock); |
441b62c1 | 226 | dbg("%s - already writing", __func__); |
507ca9bc | 227 | return 0; |
1da177e4 | 228 | } |
507ca9bc | 229 | port->write_urb_busy = 1; |
e81ee637 | 230 | spin_unlock_bh(&port->lock); |
1da177e4 LT |
231 | |
232 | spin_lock_irqsave(&priv->lock, flags); | |
233 | ||
b9c52f15 | 234 | if (count+priv->wrfilled > sizeof(priv->wrbuf)) { |
1da177e4 | 235 | /* To much data for buffer. Reset buffer. */ |
a5b6f60c | 236 | priv->wrfilled = 0; |
507ca9bc | 237 | port->write_urb_busy = 0; |
a5b6f60c AC |
238 | spin_unlock_irqrestore(&priv->lock, flags); |
239 | return 0; | |
1da177e4 LT |
240 | } |
241 | ||
242 | /* Copy data */ | |
b9c52f15 | 243 | memcpy(priv->wrbuf + priv->wrfilled, buf, count); |
1da177e4 | 244 | |
441b62c1 | 245 | usb_serial_debug_data(debug, &port->dev, __func__, count, |
b9c52f15 | 246 | priv->wrbuf + priv->wrfilled); |
1da177e4 LT |
247 | priv->wrfilled += count; |
248 | ||
b9c52f15 | 249 | if (priv->wrfilled >= 3) { |
1da177e4 | 250 | wrexpected = ((int)priv->wrbuf[2]<<8)+priv->wrbuf[1]+3; |
441b62c1 | 251 | dbg("%s - expected data: %d", __func__, wrexpected); |
b9c52f15 | 252 | } else |
1da177e4 | 253 | wrexpected = sizeof(priv->wrbuf); |
1da177e4 | 254 | |
b9c52f15 | 255 | if (priv->wrfilled >= wrexpected) { |
1da177e4 LT |
256 | /* We have enough data to begin transmission */ |
257 | int length; | |
258 | ||
441b62c1 | 259 | dbg("%s - transmitting data (frame 1)", __func__); |
b9c52f15 AC |
260 | length = (wrexpected > port->bulk_out_size) ? |
261 | port->bulk_out_size : wrexpected; | |
1da177e4 | 262 | |
b9c52f15 AC |
263 | memcpy(port->write_urb->transfer_buffer, priv->wrbuf, length); |
264 | priv->wrsent = length; | |
1da177e4 LT |
265 | |
266 | /* set up our urb */ | |
b9c52f15 | 267 | usb_fill_bulk_urb(port->write_urb, serial->dev, |
1da177e4 LT |
268 | usb_sndbulkpipe(serial->dev, port->bulk_out_endpointAddress), |
269 | port->write_urb->transfer_buffer, length, | |
b9c52f15 AC |
270 | ((serial->type->write_bulk_callback) ? |
271 | serial->type->write_bulk_callback : | |
272 | cyberjack_write_bulk_callback), | |
1da177e4 LT |
273 | port); |
274 | ||
275 | /* send the data out the bulk port */ | |
276 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); | |
277 | if (result) { | |
194343d9 GKH |
278 | dev_err(&port->dev, |
279 | "%s - failed submitting write urb, error %d", | |
280 | __func__, result); | |
1da177e4 | 281 | /* Throw away data. No better idea what to do with it. */ |
a5b6f60c AC |
282 | priv->wrfilled = 0; |
283 | priv->wrsent = 0; | |
1da177e4 | 284 | spin_unlock_irqrestore(&priv->lock, flags); |
507ca9bc | 285 | port->write_urb_busy = 0; |
1da177e4 LT |
286 | return 0; |
287 | } | |
288 | ||
b9c52f15 AC |
289 | dbg("%s - priv->wrsent=%d", __func__, priv->wrsent); |
290 | dbg("%s - priv->wrfilled=%d", __func__, priv->wrfilled); | |
1da177e4 | 291 | |
b9c52f15 | 292 | if (priv->wrsent >= priv->wrfilled) { |
441b62c1 | 293 | dbg("%s - buffer cleaned", __func__); |
b9c52f15 | 294 | memset(priv->wrbuf, 0, sizeof(priv->wrbuf)); |
a5b6f60c AC |
295 | priv->wrfilled = 0; |
296 | priv->wrsent = 0; | |
1da177e4 LT |
297 | } |
298 | } | |
299 | ||
300 | spin_unlock_irqrestore(&priv->lock, flags); | |
301 | ||
b9c52f15 AC |
302 | return count; |
303 | } | |
1da177e4 | 304 | |
95da310e | 305 | static int cyberjack_write_room(struct tty_struct *tty) |
1da177e4 | 306 | { |
a5b6f60c | 307 | /* FIXME: .... */ |
1da177e4 LT |
308 | return CYBERJACK_LOCAL_BUF_SIZE; |
309 | } | |
310 | ||
95da310e | 311 | static void cyberjack_read_int_callback(struct urb *urb) |
1da177e4 | 312 | { |
cdc97792 | 313 | struct usb_serial_port *port = urb->context; |
1da177e4 LT |
314 | struct cyberjack_private *priv = usb_get_serial_port_data(port); |
315 | unsigned char *data = urb->transfer_buffer; | |
7dcc85cd | 316 | int status = urb->status; |
1da177e4 LT |
317 | int result; |
318 | ||
441b62c1 | 319 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
320 | |
321 | /* the urb might have been killed. */ | |
7dcc85cd | 322 | if (status) |
1da177e4 LT |
323 | return; |
324 | ||
b9c52f15 AC |
325 | usb_serial_debug_data(debug, &port->dev, __func__, |
326 | urb->actual_length, data); | |
1da177e4 LT |
327 | |
328 | /* React only to interrupts signaling a bulk_in transfer */ | |
b9c52f15 | 329 | if (urb->actual_length == 4 && data[0] == 0x01) { |
1da177e4 | 330 | short old_rdtodo; |
1da177e4 LT |
331 | |
332 | /* This is a announcement of coming bulk_ins. */ | |
333 | unsigned short size = ((unsigned short)data[3]<<8)+data[2]+3; | |
334 | ||
335 | spin_lock(&priv->lock); | |
336 | ||
337 | old_rdtodo = priv->rdtodo; | |
338 | ||
b9c52f15 AC |
339 | if (old_rdtodo + size < old_rdtodo) { |
340 | dbg("To many bulk_in urbs to do."); | |
1da177e4 LT |
341 | spin_unlock(&priv->lock); |
342 | goto resubmit; | |
343 | } | |
344 | ||
345 | /* "+=" is probably more fault tollerant than "=" */ | |
346 | priv->rdtodo += size; | |
347 | ||
441b62c1 | 348 | dbg("%s - rdtodo: %d", __func__, priv->rdtodo); |
1da177e4 LT |
349 | |
350 | spin_unlock(&priv->lock); | |
351 | ||
b9c52f15 | 352 | if (!old_rdtodo) { |
1da177e4 LT |
353 | port->read_urb->dev = port->serial->dev; |
354 | result = usb_submit_urb(port->read_urb, GFP_ATOMIC); | |
b9c52f15 | 355 | if (result) |
194343d9 GKH |
356 | dev_err(&port->dev, "%s - failed resubmitting " |
357 | "read urb, error %d\n", | |
358 | __func__, result); | |
441b62c1 | 359 | dbg("%s - usb_submit_urb(read urb)", __func__); |
1da177e4 LT |
360 | } |
361 | } | |
362 | ||
363 | resubmit: | |
364 | port->interrupt_in_urb->dev = port->serial->dev; | |
365 | result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC); | |
366 | if (result) | |
194343d9 | 367 | dev_err(&port->dev, "usb_submit_urb(read int) failed\n"); |
441b62c1 | 368 | dbg("%s - usb_submit_urb(int urb)", __func__); |
1da177e4 LT |
369 | } |
370 | ||
95da310e | 371 | static void cyberjack_read_bulk_callback(struct urb *urb) |
1da177e4 | 372 | { |
cdc97792 | 373 | struct usb_serial_port *port = urb->context; |
1da177e4 LT |
374 | struct cyberjack_private *priv = usb_get_serial_port_data(port); |
375 | struct tty_struct *tty; | |
376 | unsigned char *data = urb->transfer_buffer; | |
377 | short todo; | |
1da177e4 | 378 | int result; |
7dcc85cd | 379 | int status = urb->status; |
1da177e4 | 380 | |
441b62c1 | 381 | dbg("%s - port %d", __func__, port->number); |
7dcc85cd | 382 | |
b9c52f15 AC |
383 | usb_serial_debug_data(debug, &port->dev, __func__, |
384 | urb->actual_length, data); | |
7dcc85cd GKH |
385 | if (status) { |
386 | dbg("%s - nonzero read bulk status received: %d", | |
441b62c1 | 387 | __func__, status); |
1da177e4 LT |
388 | return; |
389 | } | |
390 | ||
4a90f09b | 391 | tty = tty_port_tty_get(&port->port); |
1da177e4 | 392 | if (!tty) { |
441b62c1 | 393 | dbg("%s - ignoring since device not open\n", __func__); |
1da177e4 LT |
394 | return; |
395 | } | |
396 | if (urb->actual_length) { | |
33f0f88f AC |
397 | tty_buffer_request_room(tty, urb->actual_length); |
398 | tty_insert_flip_string(tty, data, urb->actual_length); | |
b9c52f15 | 399 | tty_flip_buffer_push(tty); |
1da177e4 | 400 | } |
4a90f09b | 401 | tty_kref_put(tty); |
1da177e4 LT |
402 | |
403 | spin_lock(&priv->lock); | |
404 | ||
405 | /* Reduce urbs to do by one. */ | |
b9c52f15 | 406 | priv->rdtodo -= urb->actual_length; |
1da177e4 | 407 | /* Just to be sure */ |
b9c52f15 AC |
408 | if (priv->rdtodo < 0) |
409 | priv->rdtodo = 0; | |
1da177e4 LT |
410 | todo = priv->rdtodo; |
411 | ||
412 | spin_unlock(&priv->lock); | |
413 | ||
441b62c1 | 414 | dbg("%s - rdtodo: %d", __func__, todo); |
1da177e4 LT |
415 | |
416 | /* Continue to read if we have still urbs to do. */ | |
b9c52f15 | 417 | if (todo /* || (urb->actual_length==port->bulk_in_endpointAddress)*/) { |
1da177e4 LT |
418 | port->read_urb->dev = port->serial->dev; |
419 | result = usb_submit_urb(port->read_urb, GFP_ATOMIC); | |
420 | if (result) | |
194343d9 GKH |
421 | dev_err(&port->dev, "%s - failed resubmitting read " |
422 | "urb, error %d\n", __func__, result); | |
441b62c1 | 423 | dbg("%s - usb_submit_urb(read urb)", __func__); |
1da177e4 LT |
424 | } |
425 | } | |
426 | ||
95da310e | 427 | static void cyberjack_write_bulk_callback(struct urb *urb) |
1da177e4 | 428 | { |
cdc97792 | 429 | struct usb_serial_port *port = urb->context; |
1da177e4 | 430 | struct cyberjack_private *priv = usb_get_serial_port_data(port); |
7dcc85cd | 431 | int status = urb->status; |
1da177e4 | 432 | |
441b62c1 | 433 | dbg("%s - port %d", __func__, port->number); |
507ca9bc GKH |
434 | |
435 | port->write_urb_busy = 0; | |
7dcc85cd GKH |
436 | if (status) { |
437 | dbg("%s - nonzero write bulk status received: %d", | |
441b62c1 | 438 | __func__, status); |
1da177e4 LT |
439 | return; |
440 | } | |
441 | ||
442 | spin_lock(&priv->lock); | |
443 | ||
444 | /* only do something if we have more data to send */ | |
b9c52f15 | 445 | if (priv->wrfilled) { |
1da177e4 LT |
446 | int length, blksize, result; |
447 | ||
441b62c1 | 448 | dbg("%s - transmitting data (frame n)", __func__); |
1da177e4 LT |
449 | |
450 | length = ((priv->wrfilled - priv->wrsent) > port->bulk_out_size) ? | |
451 | port->bulk_out_size : (priv->wrfilled - priv->wrsent); | |
452 | ||
b9c52f15 AC |
453 | memcpy(port->write_urb->transfer_buffer, |
454 | priv->wrbuf + priv->wrsent, length); | |
455 | priv->wrsent += length; | |
1da177e4 LT |
456 | |
457 | /* set up our urb */ | |
b9c52f15 | 458 | usb_fill_bulk_urb(port->write_urb, port->serial->dev, |
1da177e4 LT |
459 | usb_sndbulkpipe(port->serial->dev, port->bulk_out_endpointAddress), |
460 | port->write_urb->transfer_buffer, length, | |
b9c52f15 AC |
461 | ((port->serial->type->write_bulk_callback) ? |
462 | port->serial->type->write_bulk_callback : | |
463 | cyberjack_write_bulk_callback), | |
1da177e4 LT |
464 | port); |
465 | ||
466 | /* send the data out the bulk port */ | |
467 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); | |
468 | if (result) { | |
194343d9 GKH |
469 | dev_err(&port->dev, |
470 | "%s - failed submitting write urb, error %d\n", | |
471 | __func__, result); | |
1da177e4 | 472 | /* Throw away data. No better idea what to do with it. */ |
a5b6f60c AC |
473 | priv->wrfilled = 0; |
474 | priv->wrsent = 0; | |
1da177e4 LT |
475 | goto exit; |
476 | } | |
477 | ||
b9c52f15 AC |
478 | dbg("%s - priv->wrsent=%d", __func__, priv->wrsent); |
479 | dbg("%s - priv->wrfilled=%d", __func__, priv->wrfilled); | |
1da177e4 LT |
480 | |
481 | blksize = ((int)priv->wrbuf[2]<<8)+priv->wrbuf[1]+3; | |
482 | ||
b9c52f15 AC |
483 | if (priv->wrsent >= priv->wrfilled || |
484 | priv->wrsent >= blksize) { | |
441b62c1 | 485 | dbg("%s - buffer cleaned", __func__); |
b9c52f15 | 486 | memset(priv->wrbuf, 0, sizeof(priv->wrbuf)); |
a5b6f60c AC |
487 | priv->wrfilled = 0; |
488 | priv->wrsent = 0; | |
1da177e4 LT |
489 | } |
490 | } | |
491 | ||
492 | exit: | |
493 | spin_unlock(&priv->lock); | |
cf2c7481 | 494 | usb_serial_port_softint(port); |
1da177e4 LT |
495 | } |
496 | ||
b9c52f15 | 497 | static int __init cyberjack_init(void) |
1da177e4 LT |
498 | { |
499 | int retval; | |
500 | retval = usb_serial_register(&cyberjack_device); | |
501 | if (retval) | |
502 | goto failed_usb_serial_register; | |
503 | retval = usb_register(&cyberjack_driver); | |
b9c52f15 | 504 | if (retval) |
1da177e4 LT |
505 | goto failed_usb_register; |
506 | ||
c197a8db GKH |
507 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION " " |
508 | DRIVER_AUTHOR "\n"); | |
509 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n"); | |
1da177e4 LT |
510 | |
511 | return 0; | |
512 | failed_usb_register: | |
513 | usb_serial_deregister(&cyberjack_device); | |
514 | failed_usb_serial_register: | |
515 | return retval; | |
516 | } | |
517 | ||
b9c52f15 | 518 | static void __exit cyberjack_exit(void) |
1da177e4 | 519 | { |
b9c52f15 AC |
520 | usb_deregister(&cyberjack_driver); |
521 | usb_serial_deregister(&cyberjack_device); | |
1da177e4 LT |
522 | } |
523 | ||
524 | module_init(cyberjack_init); | |
525 | module_exit(cyberjack_exit); | |
526 | ||
b9c52f15 AC |
527 | MODULE_AUTHOR(DRIVER_AUTHOR); |
528 | MODULE_DESCRIPTION(DRIVER_DESC); | |
529 | MODULE_VERSION(DRIVER_VERSION); | |
1da177e4 LT |
530 | MODULE_LICENSE("GPL"); |
531 | ||
532 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
533 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |