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x86: move es7000_plat closer to its user
[linux-2.6/mini2440.git] / drivers / char / pcmcia / cm4040_cs.c
blob5f291bf739a627901dbad1fbebfe970311f538a3
1 /*
2 * A driver for the Omnikey PCMCIA smartcard reader CardMan 4040
3 *
4 * (c) 2000-2004 Omnikey AG (http://www.omnikey.com/)
5 *
6 * (C) 2005-2006 Harald Welte <laforge@gnumonks.org>
7 * - add support for poll()
8 * - driver cleanup
9 * - add waitqueues
10 * - adhere to linux kernel coding style and policies
11 * - support 2.6.13 "new style" pcmcia interface
12 * - add class interface for udev device creation
13 *
14 * The device basically is a USB CCID compliant device that has been
15 * attached to an I/O-Mapped FIFO.
16 *
17 * All rights reserved, Dual BSD/GPL Licensed.
18 */
19
20 /* #define PCMCIA_DEBUG 6 */
21
22 #include <linux/kernel.h>
23 #include <linux/module.h>
24 #include <linux/slab.h>
25 #include <linux/init.h>
26 #include <linux/fs.h>
27 #include <linux/delay.h>
28 #include <linux/poll.h>
29 #include <linux/wait.h>
30 #include <asm/uaccess.h>
31 #include <asm/io.h>
32
33 #include <pcmcia/cs_types.h>
34 #include <pcmcia/cs.h>
35 #include <pcmcia/cistpl.h>
36 #include <pcmcia/cisreg.h>
37 #include <pcmcia/ciscode.h>
38 #include <pcmcia/ds.h>
39
40 #include "cm4040_cs.h"
41
42
43 #ifdef PCMCIA_DEBUG
44 #define reader_to_dev(x) (&handle_to_dev(x->p_dev))
45 static int pc_debug = PCMCIA_DEBUG;
46 module_param(pc_debug, int, 0600);
47 #define DEBUGP(n, rdr, x, args...) do { \
48 if (pc_debug >= (n)) \
49 dev_printk(KERN_DEBUG, reader_to_dev(rdr), "%s:" x, \
50 __FUNCTION__ , ##args); \
51 } while (0)
52 #else
53 #define DEBUGP(n, rdr, x, args...)
54 #endif
55
56 static char *version =
57 "OMNIKEY CardMan 4040 v1.1.0gm5 - All bugs added by Harald Welte";
58
59 #define CCID_DRIVER_BULK_DEFAULT_TIMEOUT (150*HZ)
60 #define CCID_DRIVER_ASYNC_POWERUP_TIMEOUT (35*HZ)
61 #define CCID_DRIVER_MINIMUM_TIMEOUT (3*HZ)
62 #define READ_WRITE_BUFFER_SIZE 512
63 #define POLL_LOOP_COUNT 1000
64
65 /* how often to poll for fifo status change */
66 #define POLL_PERIOD msecs_to_jiffies(10)
67
68 static void reader_release(struct pcmcia_device *link);
69
70 static int major;
71 static struct class *cmx_class;
72
73 #define BS_READABLE 0x01
74 #define BS_WRITABLE 0x02
75
76 struct reader_dev {
77 struct pcmcia_device *p_dev;
78 dev_node_t node;
79 wait_queue_head_t devq;
80 wait_queue_head_t poll_wait;
81 wait_queue_head_t read_wait;
82 wait_queue_head_t write_wait;
83 unsigned long buffer_status;
84 unsigned long timeout;
85 unsigned char s_buf[READ_WRITE_BUFFER_SIZE];
86 unsigned char r_buf[READ_WRITE_BUFFER_SIZE];
87 struct timer_list poll_timer;
88 };
89
90 static struct pcmcia_device *dev_table[CM_MAX_DEV];
91
92 #ifndef PCMCIA_DEBUG
93 #define xoutb outb
94 #define xinb inb
95 #else
96 static inline void xoutb(unsigned char val, unsigned short port)
97 {
98 if (pc_debug >= 7)
99 printk(KERN_DEBUG "outb(val=%.2x,port=%.4x)\n", val, port);
100 outb(val, port);
101 }
102
103 static inline unsigned char xinb(unsigned short port)
104 {
105 unsigned char val;
106
107 val = inb(port);
108 if (pc_debug >= 7)
109 printk(KERN_DEBUG "%.2x=inb(%.4x)\n", val, port);
110 return val;
111 }
112 #endif
113
114 /* poll the device fifo status register. not to be confused with
115 * the poll syscall. */
116 static void cm4040_do_poll(unsigned long dummy)
117 {
118 struct reader_dev *dev = (struct reader_dev *) dummy;
119 unsigned int obs = xinb(dev->p_dev->io.BasePort1
120 + REG_OFFSET_BUFFER_STATUS);
121
122 if ((obs & BSR_BULK_IN_FULL)) {
123 set_bit(BS_READABLE, &dev->buffer_status);
124 DEBUGP(4, dev, "waking up read_wait\n");
125 wake_up_interruptible(&dev->read_wait);
126 } else
127 clear_bit(BS_READABLE, &dev->buffer_status);
128
129 if (!(obs & BSR_BULK_OUT_FULL)) {
130 set_bit(BS_WRITABLE, &dev->buffer_status);
131 DEBUGP(4, dev, "waking up write_wait\n");
132 wake_up_interruptible(&dev->write_wait);
133 } else
134 clear_bit(BS_WRITABLE, &dev->buffer_status);
135
136 if (dev->buffer_status)
137 wake_up_interruptible(&dev->poll_wait);
138
139 mod_timer(&dev->poll_timer, jiffies + POLL_PERIOD);
140 }
141
142 static void cm4040_stop_poll(struct reader_dev *dev)
143 {
144 del_timer_sync(&dev->poll_timer);
145 }
146
147 static int wait_for_bulk_out_ready(struct reader_dev *dev)
148 {
149 int i, rc;
150 int iobase = dev->p_dev->io.BasePort1;
151
152 for (i = 0; i < POLL_LOOP_COUNT; i++) {
153 if ((xinb(iobase + REG_OFFSET_BUFFER_STATUS)
154 & BSR_BULK_OUT_FULL) == 0) {
155 DEBUGP(4, dev, "BulkOut empty (i=%d)\n", i);
156 return 1;
157 }
158 }
159
160 DEBUGP(4, dev, "wait_event_interruptible_timeout(timeout=%ld\n",
161 dev->timeout);
162 rc = wait_event_interruptible_timeout(dev->write_wait,
163 test_and_clear_bit(BS_WRITABLE,
164 &dev->buffer_status),
165 dev->timeout);
166
167 if (rc > 0)
168 DEBUGP(4, dev, "woke up: BulkOut empty\n");
169 else if (rc == 0)
170 DEBUGP(4, dev, "woke up: BulkOut full, returning 0 :(\n");
171 else if (rc < 0)
172 DEBUGP(4, dev, "woke up: signal arrived\n");
173
174 return rc;
175 }
176
177 /* Write to Sync Control Register */
178 static int write_sync_reg(unsigned char val, struct reader_dev *dev)
179 {
180 int iobase = dev->p_dev->io.BasePort1;
181 int rc;
182
183 rc = wait_for_bulk_out_ready(dev);
184 if (rc <= 0)
185 return rc;
186
187 xoutb(val, iobase + REG_OFFSET_SYNC_CONTROL);
188 rc = wait_for_bulk_out_ready(dev);
189 if (rc <= 0)
190 return rc;
191
192 return 1;
193 }
194
195 static int wait_for_bulk_in_ready(struct reader_dev *dev)
196 {
197 int i, rc;
198 int iobase = dev->p_dev->io.BasePort1;
199
200 for (i = 0; i < POLL_LOOP_COUNT; i++) {
201 if ((xinb(iobase + REG_OFFSET_BUFFER_STATUS)
202 & BSR_BULK_IN_FULL) == BSR_BULK_IN_FULL) {
203 DEBUGP(3, dev, "BulkIn full (i=%d)\n", i);
204 return 1;
205 }
206 }
207
208 DEBUGP(4, dev, "wait_event_interruptible_timeout(timeout=%ld\n",
209 dev->timeout);
210 rc = wait_event_interruptible_timeout(dev->read_wait,
211 test_and_clear_bit(BS_READABLE,
212 &dev->buffer_status),
213 dev->timeout);
214 if (rc > 0)
215 DEBUGP(4, dev, "woke up: BulkIn full\n");
216 else if (rc == 0)
217 DEBUGP(4, dev, "woke up: BulkIn not full, returning 0 :(\n");
218 else if (rc < 0)
219 DEBUGP(4, dev, "woke up: signal arrived\n");
220
221 return rc;
222 }
223
224 static ssize_t cm4040_read(struct file *filp, char __user *buf,
225 size_t count, loff_t *ppos)
226 {
227 struct reader_dev *dev = filp->private_data;
228 int iobase = dev->p_dev->io.BasePort1;
229 size_t bytes_to_read;
230 unsigned long i;
231 size_t min_bytes_to_read;
232 int rc;
233 unsigned char uc;
234
235 DEBUGP(2, dev, "-> cm4040_read(%s,%d)\n", current->comm, current->pid);
236
237 if (count == 0)
238 return 0;
239
240 if (count < 10)
241 return -EFAULT;
242
243 if (filp->f_flags & O_NONBLOCK) {
244 DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n");
245 DEBUGP(2, dev, "<- cm4040_read (failure)\n");
246 return -EAGAIN;
247 }
248
249 if (!pcmcia_dev_present(dev->p_dev))
250 return -ENODEV;
251
252 for (i = 0; i < 5; i++) {
253 rc = wait_for_bulk_in_ready(dev);
254 if (rc <= 0) {
255 DEBUGP(5, dev, "wait_for_bulk_in_ready rc=%.2x\n", rc);
256 DEBUGP(2, dev, "<- cm4040_read (failed)\n");
257 if (rc == -ERESTARTSYS)
258 return rc;
259 return -EIO;
260 }
261 dev->r_buf[i] = xinb(iobase + REG_OFFSET_BULK_IN);
262 #ifdef PCMCIA_DEBUG
263 if (pc_debug >= 6)
264 printk(KERN_DEBUG "%lu:%2x ", i, dev->r_buf[i]);
265 }
266 printk("\n");
267 #else
268 }
269 #endif
270
271 bytes_to_read = 5 + le32_to_cpu(*(__le32 *)&dev->r_buf[1]);
272
273 DEBUGP(6, dev, "BytesToRead=%lu\n", bytes_to_read);
274
275 min_bytes_to_read = min(count, bytes_to_read + 5);
276 min_bytes_to_read = min_t(size_t, min_bytes_to_read, READ_WRITE_BUFFER_SIZE);
277
278 DEBUGP(6, dev, "Min=%lu\n", min_bytes_to_read);
279
280 for (i = 0; i < (min_bytes_to_read-5); i++) {
281 rc = wait_for_bulk_in_ready(dev);
282 if (rc <= 0) {
283 DEBUGP(5, dev, "wait_for_bulk_in_ready rc=%.2x\n", rc);
284 DEBUGP(2, dev, "<- cm4040_read (failed)\n");
285 if (rc == -ERESTARTSYS)
286 return rc;
287 return -EIO;
288 }
289 dev->r_buf[i+5] = xinb(iobase + REG_OFFSET_BULK_IN);
290 #ifdef PCMCIA_DEBUG
291 if (pc_debug >= 6)
292 printk(KERN_DEBUG "%lu:%2x ", i, dev->r_buf[i]);
293 }
294 printk("\n");
295 #else
296 }
297 #endif
298
299 *ppos = min_bytes_to_read;
300 if (copy_to_user(buf, dev->r_buf, min_bytes_to_read))
301 return -EFAULT;
302
303 rc = wait_for_bulk_in_ready(dev);
304 if (rc <= 0) {
305 DEBUGP(5, dev, "wait_for_bulk_in_ready rc=%.2x\n", rc);
306 DEBUGP(2, dev, "<- cm4040_read (failed)\n");
307 if (rc == -ERESTARTSYS)
308 return rc;
309 return -EIO;
310 }
311
312 rc = write_sync_reg(SCR_READER_TO_HOST_DONE, dev);
313 if (rc <= 0) {
314 DEBUGP(5, dev, "write_sync_reg c=%.2x\n", rc);
315 DEBUGP(2, dev, "<- cm4040_read (failed)\n");
316 if (rc == -ERESTARTSYS)
317 return rc;
318 else
319 return -EIO;
320 }
321
322 uc = xinb(iobase + REG_OFFSET_BULK_IN);
323
324 DEBUGP(2, dev, "<- cm4040_read (successfully)\n");
325 return min_bytes_to_read;
326 }
327
328 static ssize_t cm4040_write(struct file *filp, const char __user *buf,
329 size_t count, loff_t *ppos)
330 {
331 struct reader_dev *dev = filp->private_data;
332 int iobase = dev->p_dev->io.BasePort1;
333 ssize_t rc;
334 int i;
335 unsigned int bytes_to_write;
336
337 DEBUGP(2, dev, "-> cm4040_write(%s,%d)\n", current->comm, current->pid);
338
339 if (count == 0) {
340 DEBUGP(2, dev, "<- cm4040_write empty read (successfully)\n");
341 return 0;
342 }
343
344 if ((count < 5) || (count > READ_WRITE_BUFFER_SIZE)) {
345 DEBUGP(2, dev, "<- cm4040_write buffersize=%Zd < 5\n", count);
346 return -EIO;
347 }
348
349 if (filp->f_flags & O_NONBLOCK) {
350 DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n");
351 DEBUGP(4, dev, "<- cm4040_write (failure)\n");
352 return -EAGAIN;
353 }
354
355 if (!pcmcia_dev_present(dev->p_dev))
356 return -ENODEV;
357
358 bytes_to_write = count;
359 if (copy_from_user(dev->s_buf, buf, bytes_to_write))
360 return -EFAULT;
361
362 switch (dev->s_buf[0]) {
363 case CMD_PC_TO_RDR_XFRBLOCK:
364 case CMD_PC_TO_RDR_SECURE:
365 case CMD_PC_TO_RDR_TEST_SECURE:
366 case CMD_PC_TO_RDR_OK_SECURE:
367 dev->timeout = CCID_DRIVER_BULK_DEFAULT_TIMEOUT;
368 break;
369
370 case CMD_PC_TO_RDR_ICCPOWERON:
371 dev->timeout = CCID_DRIVER_ASYNC_POWERUP_TIMEOUT;
372 break;
373
374 case CMD_PC_TO_RDR_GETSLOTSTATUS:
375 case CMD_PC_TO_RDR_ICCPOWEROFF:
376 case CMD_PC_TO_RDR_GETPARAMETERS:
377 case CMD_PC_TO_RDR_RESETPARAMETERS:
378 case CMD_PC_TO_RDR_SETPARAMETERS:
379 case CMD_PC_TO_RDR_ESCAPE:
380 case CMD_PC_TO_RDR_ICCCLOCK:
381 default:
382 dev->timeout = CCID_DRIVER_MINIMUM_TIMEOUT;
383 break;
384 }
385
386 rc = write_sync_reg(SCR_HOST_TO_READER_START, dev);
387 if (rc <= 0) {
388 DEBUGP(5, dev, "write_sync_reg c=%.2Zx\n", rc);
389 DEBUGP(2, dev, "<- cm4040_write (failed)\n");
390 if (rc == -ERESTARTSYS)
391 return rc;
392 else
393 return -EIO;
394 }
395
396 DEBUGP(4, dev, "start \n");
397
398 for (i = 0; i < bytes_to_write; i++) {
399 rc = wait_for_bulk_out_ready(dev);
400 if (rc <= 0) {
401 DEBUGP(5, dev, "wait_for_bulk_out_ready rc=%.2Zx\n",
402 rc);
403 DEBUGP(2, dev, "<- cm4040_write (failed)\n");
404 if (rc == -ERESTARTSYS)
405 return rc;
406 else
407 return -EIO;
408 }
409
410 xoutb(dev->s_buf[i],iobase + REG_OFFSET_BULK_OUT);
411 }
412 DEBUGP(4, dev, "end\n");
413
414 rc = write_sync_reg(SCR_HOST_TO_READER_DONE, dev);
415
416 if (rc <= 0) {
417 DEBUGP(5, dev, "write_sync_reg c=%.2Zx\n", rc);
418 DEBUGP(2, dev, "<- cm4040_write (failed)\n");
419 if (rc == -ERESTARTSYS)
420 return rc;
421 else
422 return -EIO;
423 }
424
425 DEBUGP(2, dev, "<- cm4040_write (successfully)\n");
426 return count;
427 }
428
429 static unsigned int cm4040_poll(struct file *filp, poll_table *wait)
430 {
431 struct reader_dev *dev = filp->private_data;
432 unsigned int mask = 0;
433
434 poll_wait(filp, &dev->poll_wait, wait);
435
436 if (test_and_clear_bit(BS_READABLE, &dev->buffer_status))
437 mask |= POLLIN | POLLRDNORM;
438 if (test_and_clear_bit(BS_WRITABLE, &dev->buffer_status))
439 mask |= POLLOUT | POLLWRNORM;
440
441 DEBUGP(2, dev, "<- cm4040_poll(%u)\n", mask);
442
443 return mask;
444 }
445
446 static int cm4040_open(struct inode *inode, struct file *filp)
447 {
448 struct reader_dev *dev;
449 struct pcmcia_device *link;
450 int minor = iminor(inode);
451
452 if (minor >= CM_MAX_DEV)
453 return -ENODEV;
454
455 link = dev_table[minor];
456 if (link == NULL || !pcmcia_dev_present(link))
457 return -ENODEV;
458
459 if (link->open)
460 return -EBUSY;
461
462 dev = link->priv;
463 filp->private_data = dev;
464
465 if (filp->f_flags & O_NONBLOCK) {
466 DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n");
467 return -EAGAIN;
468 }
469
470 link->open = 1;
471
472 dev->poll_timer.data = (unsigned long) dev;
473 mod_timer(&dev->poll_timer, jiffies + POLL_PERIOD);
474
475 DEBUGP(2, dev, "<- cm4040_open (successfully)\n");
476 return nonseekable_open(inode, filp);
477 }
478
479 static int cm4040_close(struct inode *inode, struct file *filp)
480 {
481 struct reader_dev *dev = filp->private_data;
482 struct pcmcia_device *link;
483 int minor = iminor(inode);
484
485 DEBUGP(2, dev, "-> cm4040_close(maj/min=%d.%d)\n", imajor(inode),
486 iminor(inode));
487
488 if (minor >= CM_MAX_DEV)
489 return -ENODEV;
490
491 link = dev_table[minor];
492 if (link == NULL)
493 return -ENODEV;
494
495 cm4040_stop_poll(dev);
496
497 link->open = 0;
498 wake_up(&dev->devq);
499
500 DEBUGP(2, dev, "<- cm4040_close\n");
501 return 0;
502 }
503
504 static void cm4040_reader_release(struct pcmcia_device *link)
505 {
506 struct reader_dev *dev = link->priv;
507
508 DEBUGP(3, dev, "-> cm4040_reader_release\n");
509 while (link->open) {
510 DEBUGP(3, dev, KERN_INFO MODULE_NAME ": delaying release "
511 "until process has terminated\n");
512 wait_event(dev->devq, (link->open == 0));
513 }
514 DEBUGP(3, dev, "<- cm4040_reader_release\n");
515 return;
516 }
517
518 static int reader_config(struct pcmcia_device *link, int devno)
519 {
520 struct reader_dev *dev;
521 tuple_t tuple;
522 cisparse_t parse;
523 u_char buf[64];
524 int fail_fn, fail_rc;
525 int rc;
526
527 tuple.Attributes = 0;
528 tuple.TupleData = buf;
529 tuple.TupleDataMax = sizeof(buf);
530 tuple.TupleOffset = 0;
531
532 link->io.BasePort2 = 0;
533 link->io.NumPorts2 = 0;
534 link->io.Attributes2 = 0;
535 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
536 for (rc = pcmcia_get_first_tuple(link, &tuple);
537 rc == CS_SUCCESS;
538 rc = pcmcia_get_next_tuple(link, &tuple)) {
539 rc = pcmcia_get_tuple_data(link, &tuple);
540 if (rc != CS_SUCCESS)
541 continue;
542 rc = pcmcia_parse_tuple(link, &tuple, &parse);
543 if (rc != CS_SUCCESS)
544 continue;
545
546 link->conf.ConfigIndex = parse.cftable_entry.index;
547
548 if (!parse.cftable_entry.io.nwin)
549 continue;
550
551 link->io.BasePort1 = parse.cftable_entry.io.win[0].base;
552 link->io.NumPorts1 = parse.cftable_entry.io.win[0].len;
553 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
554 if (!(parse.cftable_entry.io.flags & CISTPL_IO_8BIT))
555 link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
556 if (!(parse.cftable_entry.io.flags & CISTPL_IO_16BIT))
557 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
558 link->io.IOAddrLines = parse.cftable_entry.io.flags
559 & CISTPL_IO_LINES_MASK;
560 rc = pcmcia_request_io(link, &link->io);
561
562 dev_printk(KERN_INFO, &handle_to_dev(link), "foo");
563 if (rc == CS_SUCCESS)
564 break;
565 else
566 dev_printk(KERN_INFO, &handle_to_dev(link),
567 "pcmcia_request_io failed 0x%x\n", rc);
568 }
569 if (rc != CS_SUCCESS)
570 goto cs_release;
571
572 link->conf.IntType = 00000002;
573
574 if ((fail_rc = pcmcia_request_configuration(link,&link->conf))
575 !=CS_SUCCESS) {
576 fail_fn = RequestConfiguration;
577 dev_printk(KERN_INFO, &handle_to_dev(link),
578 "pcmcia_request_configuration failed 0x%x\n",
579 fail_rc);
580 goto cs_release;
581 }
582
583 dev = link->priv;
584 sprintf(dev->node.dev_name, DEVICE_NAME "%d", devno);
585 dev->node.major = major;
586 dev->node.minor = devno;
587 dev->node.next = &dev->node;
588
589 DEBUGP(2, dev, "device " DEVICE_NAME "%d at 0x%.4x-0x%.4x\n", devno,
590 link->io.BasePort1, link->io.BasePort1+link->io.NumPorts1);
591 DEBUGP(2, dev, "<- reader_config (succ)\n");
592
593 return 0;
594
595 cs_release:
596 reader_release(link);
597 return -ENODEV;
598 }
599
600 static void reader_release(struct pcmcia_device *link)
601 {
602 cm4040_reader_release(link);
603 pcmcia_disable_device(link);
604 }
605
606 static int reader_probe(struct pcmcia_device *link)
607 {
608 struct reader_dev *dev;
609 int i, ret;
610
611 for (i = 0; i < CM_MAX_DEV; i++) {
612 if (dev_table[i] == NULL)
613 break;
614 }
615
616 if (i == CM_MAX_DEV)
617 return -ENODEV;
618
619 dev = kzalloc(sizeof(struct reader_dev), GFP_KERNEL);
620 if (dev == NULL)
621 return -ENOMEM;
622
623 dev->timeout = CCID_DRIVER_MINIMUM_TIMEOUT;
624 dev->buffer_status = 0;
625
626 link->priv = dev;
627 dev->p_dev = link;
628
629 link->conf.IntType = INT_MEMORY_AND_IO;
630 dev_table[i] = link;
631
632 init_waitqueue_head(&dev->devq);
633 init_waitqueue_head(&dev->poll_wait);
634 init_waitqueue_head(&dev->read_wait);
635 init_waitqueue_head(&dev->write_wait);
636 setup_timer(&dev->poll_timer, cm4040_do_poll, 0);
637
638 ret = reader_config(link, i);
639 if (ret) {
640 dev_table[i] = NULL;
641 kfree(dev);
642 return ret;
643 }
644
645 device_create(cmx_class, NULL, MKDEV(major, i), "cmx%d", i);
646
647 return 0;
648 }
649
650 static void reader_detach(struct pcmcia_device *link)
651 {
652 struct reader_dev *dev = link->priv;
653 int devno;
654
655 /* find device */
656 for (devno = 0; devno < CM_MAX_DEV; devno++) {
657 if (dev_table[devno] == link)
658 break;
659 }
660 if (devno == CM_MAX_DEV)
661 return;
662
663 reader_release(link);
664
665 dev_table[devno] = NULL;
666 kfree(dev);
667
668 device_destroy(cmx_class, MKDEV(major, devno));
669
670 return;
671 }
672
673 static const struct file_operations reader_fops = {
674 .owner = THIS_MODULE,
675 .read = cm4040_read,
676 .write = cm4040_write,
677 .open = cm4040_open,
678 .release = cm4040_close,
679 .poll = cm4040_poll,
680 };
681
682 static struct pcmcia_device_id cm4040_ids[] = {
683 PCMCIA_DEVICE_MANF_CARD(0x0223, 0x0200),
684 PCMCIA_DEVICE_PROD_ID12("OMNIKEY", "CardMan 4040",
685 0xE32CDD8C, 0x8F23318B),
686 PCMCIA_DEVICE_NULL,
687 };
688 MODULE_DEVICE_TABLE(pcmcia, cm4040_ids);
689
690 static struct pcmcia_driver reader_driver = {
691 .owner = THIS_MODULE,
692 .drv = {
693 .name = "cm4040_cs",
694 },
695 .probe = reader_probe,
696 .remove = reader_detach,
697 .id_table = cm4040_ids,
698 };
699
700 static int __init cm4040_init(void)
701 {
702 int rc;
703
704 printk(KERN_INFO "%s\n", version);
705 cmx_class = class_create(THIS_MODULE, "cardman_4040");
706 if (IS_ERR(cmx_class))
707 return PTR_ERR(cmx_class);
708
709 major = register_chrdev(0, DEVICE_NAME, &reader_fops);
710 if (major < 0) {
711 printk(KERN_WARNING MODULE_NAME
712 ": could not get major number\n");
713 class_destroy(cmx_class);
714 return major;
715 }
716
717 rc = pcmcia_register_driver(&reader_driver);
718 if (rc < 0) {
719 unregister_chrdev(major, DEVICE_NAME);
720 class_destroy(cmx_class);
721 return rc;
722 }
723
724 return 0;
725 }
726
727 static void __exit cm4040_exit(void)
728 {
729 printk(KERN_INFO MODULE_NAME ": unloading\n");
730 pcmcia_unregister_driver(&reader_driver);
731 unregister_chrdev(major, DEVICE_NAME);
732 class_destroy(cmx_class);
733 }
734
735 module_init(cm4040_init);
736 module_exit(cm4040_exit);
737 MODULE_LICENSE("Dual BSD/GPL");
Support for the Chinese Samsung S3C2440 based development boards