1
2
3
4
5
6
7
8
9
10
11
12
13
14
15#include <linux/module.h>
16#include <linux/moduleparam.h>
17#include <linux/init.h>
18#include <linux/kernel.h>
19#include <linux/string.h>
20#include <linux/major.h>
21#include <linux/errno.h>
22#include <linux/slab.h>
23#include <linux/mm.h>
24#include <linux/interrupt.h>
25#include <linux/timer.h>
26#include <linux/ioport.h>
27#include <linux/delay.h>
28#include <linux/pm.h>
29#include <linux/device.h>
30#include <linux/kthread.h>
31#include <linux/freezer.h>
32#include <asm/irq.h>
33
34#include <pcmcia/ss.h>
35#include <pcmcia/cistpl.h>
36#include <pcmcia/cisreg.h>
37#include <pcmcia/ds.h>
38#include "cs_internal.h"
39
40
41
42
43MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
44MODULE_DESCRIPTION("Linux Kernel Card Services");
45MODULE_LICENSE("GPL");
46
47#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0444)
48
49INT_MODULE_PARM(setup_delay, 10);
50INT_MODULE_PARM(resume_delay, 20);
51INT_MODULE_PARM(shutdown_delay, 3);
52INT_MODULE_PARM(vcc_settle, 40);
53INT_MODULE_PARM(reset_time, 10);
54INT_MODULE_PARM(unreset_delay, 10);
55INT_MODULE_PARM(unreset_check, 10);
56INT_MODULE_PARM(unreset_limit, 30);
57
58
59INT_MODULE_PARM(cis_speed, 300);
60
61
62socket_state_t dead_socket = {
63 .csc_mask = SS_DETECT,
64};
65EXPORT_SYMBOL(dead_socket);
66
67
68
69LIST_HEAD(pcmcia_socket_list);
70EXPORT_SYMBOL(pcmcia_socket_list);
71
72DECLARE_RWSEM(pcmcia_socket_list_rwsem);
73EXPORT_SYMBOL(pcmcia_socket_list_rwsem);
74
75
76struct pcmcia_socket *pcmcia_get_socket(struct pcmcia_socket *skt)
77{
78 struct device *dev = get_device(&skt->dev);
79 if (!dev)
80 return NULL;
81 return dev_get_drvdata(dev);
82}
83EXPORT_SYMBOL(pcmcia_get_socket);
84
85
86void pcmcia_put_socket(struct pcmcia_socket *skt)
87{
88 put_device(&skt->dev);
89}
90EXPORT_SYMBOL(pcmcia_put_socket);
91
92
93static void pcmcia_release_socket(struct device *dev)
94{
95 struct pcmcia_socket *socket = dev_get_drvdata(dev);
96
97 complete(&socket->socket_released);
98}
99
100static int pccardd(void *__skt);
101
102
103
104
105
106int pcmcia_register_socket(struct pcmcia_socket *socket)
107{
108 struct task_struct *tsk;
109 int ret;
110
111 if (!socket || !socket->ops || !socket->dev.parent || !socket->resource_ops)
112 return -EINVAL;
113
114 dev_dbg(&socket->dev, "pcmcia_register_socket(0x%p)\n", socket->ops);
115
116
117
118
119
120 down_write(&pcmcia_socket_list_rwsem);
121 if (list_empty(&pcmcia_socket_list))
122 socket->sock = 0;
123 else {
124 unsigned int found, i = 1;
125 struct pcmcia_socket *tmp;
126 do {
127 found = 1;
128 list_for_each_entry(tmp, &pcmcia_socket_list, socket_list) {
129 if (tmp->sock == i)
130 found = 0;
131 }
132 i++;
133 } while (!found);
134 socket->sock = i - 1;
135 }
136 list_add_tail(&socket->socket_list, &pcmcia_socket_list);
137 up_write(&pcmcia_socket_list_rwsem);
138
139#ifndef CONFIG_CARDBUS
140
141
142
143
144 socket->features &= ~SS_CAP_CARDBUS;
145#endif
146
147
148 dev_set_drvdata(&socket->dev, socket);
149 socket->dev.class = &pcmcia_socket_class;
150 dev_set_name(&socket->dev, "pcmcia_socket%u", socket->sock);
151
152
153 socket->cis_mem.flags = 0;
154 socket->cis_mem.speed = cis_speed;
155
156 INIT_LIST_HEAD(&socket->cis_cache);
157
158 init_completion(&socket->socket_released);
159 init_completion(&socket->thread_done);
160 mutex_init(&socket->skt_mutex);
161 mutex_init(&socket->ops_mutex);
162 spin_lock_init(&socket->thread_lock);
163
164 if (socket->resource_ops->init) {
165 mutex_lock(&socket->ops_mutex);
166 ret = socket->resource_ops->init(socket);
167 mutex_unlock(&socket->ops_mutex);
168 if (ret)
169 goto err;
170 }
171
172 tsk = kthread_run(pccardd, socket, "pccardd");
173 if (IS_ERR(tsk)) {
174 ret = PTR_ERR(tsk);
175 goto err;
176 }
177
178 wait_for_completion(&socket->thread_done);
179 if (!socket->thread) {
180 dev_warn(&socket->dev,
181 "PCMCIA: warning: socket thread did not start\n");
182 return -EIO;
183 }
184
185 pcmcia_parse_events(socket, SS_DETECT);
186
187
188
189
190
191
192 request_module_nowait("pcmcia");
193
194 return 0;
195
196 err:
197 down_write(&pcmcia_socket_list_rwsem);
198 list_del(&socket->socket_list);
199 up_write(&pcmcia_socket_list_rwsem);
200 return ret;
201}
202EXPORT_SYMBOL(pcmcia_register_socket);
203
204
205
206
207
208
209void pcmcia_unregister_socket(struct pcmcia_socket *socket)
210{
211 if (!socket)
212 return;
213
214 dev_dbg(&socket->dev, "pcmcia_unregister_socket(0x%p)\n", socket->ops);
215
216 if (socket->thread)
217 kthread_stop(socket->thread);
218
219
220 down_write(&pcmcia_socket_list_rwsem);
221 list_del(&socket->socket_list);
222 up_write(&pcmcia_socket_list_rwsem);
223
224
225 if (socket->resource_ops->exit) {
226 mutex_lock(&socket->ops_mutex);
227 socket->resource_ops->exit(socket);
228 mutex_unlock(&socket->ops_mutex);
229 }
230 wait_for_completion(&socket->socket_released);
231}
232EXPORT_SYMBOL(pcmcia_unregister_socket);
233
234
235struct pcmcia_socket *pcmcia_get_socket_by_nr(unsigned int nr)
236{
237 struct pcmcia_socket *s;
238
239 down_read(&pcmcia_socket_list_rwsem);
240 list_for_each_entry(s, &pcmcia_socket_list, socket_list)
241 if (s->sock == nr) {
242 up_read(&pcmcia_socket_list_rwsem);
243 return s;
244 }
245 up_read(&pcmcia_socket_list_rwsem);
246
247 return NULL;
248
249}
250EXPORT_SYMBOL(pcmcia_get_socket_by_nr);
251
252static int socket_reset(struct pcmcia_socket *skt)
253{
254 int status, i;
255
256 dev_dbg(&skt->dev, "reset\n");
257
258 skt->socket.flags |= SS_OUTPUT_ENA | SS_RESET;
259 skt->ops->set_socket(skt, &skt->socket);
260 udelay((long)reset_time);
261
262 skt->socket.flags &= ~SS_RESET;
263 skt->ops->set_socket(skt, &skt->socket);
264
265 msleep(unreset_delay * 10);
266 for (i = 0; i < unreset_limit; i++) {
267 skt->ops->get_status(skt, &status);
268
269 if (!(status & SS_DETECT))
270 return -ENODEV;
271
272 if (status & SS_READY)
273 return 0;
274
275 msleep(unreset_check * 10);
276 }
277
278 dev_err(&skt->dev, "time out after reset\n");
279 return -ETIMEDOUT;
280}
281
282
283
284
285
286
287
288static void socket_shutdown(struct pcmcia_socket *s)
289{
290 int status;
291
292 dev_dbg(&s->dev, "shutdown\n");
293
294 if (s->callback)
295 s->callback->remove(s);
296
297 mutex_lock(&s->ops_mutex);
298 s->state &= SOCKET_INUSE | SOCKET_PRESENT;
299 msleep(shutdown_delay * 10);
300 s->state &= SOCKET_INUSE;
301
302
303 s->socket = dead_socket;
304 s->ops->init(s);
305 s->ops->set_socket(s, &s->socket);
306 s->lock_count = 0;
307 kfree(s->fake_cis);
308 s->fake_cis = NULL;
309 s->functions = 0;
310
311
312
313
314
315
316
317 mutex_unlock(&s->ops_mutex);
318
319#ifdef CONFIG_CARDBUS
320 cb_free(s);
321#endif
322
323
324 msleep(100);
325
326 s->ops->get_status(s, &status);
327 if (status & SS_POWERON) {
328 dev_err(&s->dev,
329 "*** DANGER *** unable to remove socket power\n");
330 }
331
332 s->state &= ~SOCKET_INUSE;
333}
334
335static int socket_setup(struct pcmcia_socket *skt, int initial_delay)
336{
337 int status, i;
338
339 dev_dbg(&skt->dev, "setup\n");
340
341 skt->ops->get_status(skt, &status);
342 if (!(status & SS_DETECT))
343 return -ENODEV;
344
345 msleep(initial_delay * 10);
346
347 for (i = 0; i < 100; i++) {
348 skt->ops->get_status(skt, &status);
349 if (!(status & SS_DETECT))
350 return -ENODEV;
351
352 if (!(status & SS_PENDING))
353 break;
354
355 msleep(100);
356 }
357
358 if (status & SS_PENDING) {
359 dev_err(&skt->dev, "voltage interrogation timed out\n");
360 return -ETIMEDOUT;
361 }
362
363 if (status & SS_CARDBUS) {
364 if (!(skt->features & SS_CAP_CARDBUS)) {
365 dev_err(&skt->dev, "cardbus cards are not supported\n");
366 return -EINVAL;
367 }
368 skt->state |= SOCKET_CARDBUS;
369 } else
370 skt->state &= ~SOCKET_CARDBUS;
371
372
373
374
375 if (status & SS_3VCARD)
376 skt->socket.Vcc = skt->socket.Vpp = 33;
377 else if (!(status & SS_XVCARD))
378 skt->socket.Vcc = skt->socket.Vpp = 50;
379 else {
380 dev_err(&skt->dev, "unsupported voltage key\n");
381 return -EIO;
382 }
383
384 if (skt->power_hook)
385 skt->power_hook(skt, HOOK_POWER_PRE);
386
387 skt->socket.flags = 0;
388 skt->ops->set_socket(skt, &skt->socket);
389
390
391
392
393 msleep(vcc_settle * 10);
394
395 skt->ops->get_status(skt, &status);
396 if (!(status & SS_POWERON)) {
397 dev_err(&skt->dev, "unable to apply power\n");
398 return -EIO;
399 }
400
401 status = socket_reset(skt);
402
403 if (skt->power_hook)
404 skt->power_hook(skt, HOOK_POWER_POST);
405
406 return status;
407}
408
409
410
411
412
413static int socket_insert(struct pcmcia_socket *skt)
414{
415 int ret;
416
417 dev_dbg(&skt->dev, "insert\n");
418
419 mutex_lock(&skt->ops_mutex);
420 if (skt->state & SOCKET_INUSE) {
421 mutex_unlock(&skt->ops_mutex);
422 return -EINVAL;
423 }
424 skt->state |= SOCKET_INUSE;
425
426 ret = socket_setup(skt, setup_delay);
427 if (ret == 0) {
428 skt->state |= SOCKET_PRESENT;
429
430 dev_notice(&skt->dev, "pccard: %s card inserted into slot %d\n",
431 (skt->state & SOCKET_CARDBUS) ? "CardBus" : "PCMCIA",
432 skt->sock);
433
434#ifdef CONFIG_CARDBUS
435 if (skt->state & SOCKET_CARDBUS) {
436 cb_alloc(skt);
437 skt->state |= SOCKET_CARDBUS_CONFIG;
438 }
439#endif
440 dev_dbg(&skt->dev, "insert done\n");
441 mutex_unlock(&skt->ops_mutex);
442
443 if (!(skt->state & SOCKET_CARDBUS) && (skt->callback))
444 skt->callback->add(skt);
445 } else {
446 mutex_unlock(&skt->ops_mutex);
447 socket_shutdown(skt);
448 }
449
450 return ret;
451}
452
453static int socket_suspend(struct pcmcia_socket *skt)
454{
455 if (skt->state & SOCKET_SUSPEND)
456 return -EBUSY;
457
458 mutex_lock(&skt->ops_mutex);
459 skt->suspended_state = skt->state;
460
461 skt->socket = dead_socket;
462 skt->ops->set_socket(skt, &skt->socket);
463 if (skt->ops->suspend)
464 skt->ops->suspend(skt);
465 skt->state |= SOCKET_SUSPEND;
466 mutex_unlock(&skt->ops_mutex);
467 return 0;
468}
469
470static int socket_early_resume(struct pcmcia_socket *skt)
471{
472 mutex_lock(&skt->ops_mutex);
473 skt->socket = dead_socket;
474 skt->ops->init(skt);
475 skt->ops->set_socket(skt, &skt->socket);
476 if (skt->state & SOCKET_PRESENT)
477 skt->resume_status = socket_setup(skt, resume_delay);
478 mutex_unlock(&skt->ops_mutex);
479 return 0;
480}
481
482static int socket_late_resume(struct pcmcia_socket *skt)
483{
484 int ret = 0;
485
486 mutex_lock(&skt->ops_mutex);
487 skt->state &= ~SOCKET_SUSPEND;
488 mutex_unlock(&skt->ops_mutex);
489
490 if (!(skt->state & SOCKET_PRESENT)) {
491 ret = socket_insert(skt);
492 if (ret == -ENODEV)
493 ret = 0;
494 return ret;
495 }
496
497 if (skt->resume_status) {
498 socket_shutdown(skt);
499 return 0;
500 }
501
502 if (skt->suspended_state != skt->state) {
503 dev_dbg(&skt->dev,
504 "suspend state 0x%x != resume state 0x%x\n",
505 skt->suspended_state, skt->state);
506
507 socket_shutdown(skt);
508 return socket_insert(skt);
509 }
510
511 if (!(skt->state & SOCKET_CARDBUS) && (skt->callback))
512 ret = skt->callback->early_resume(skt);
513 return ret;
514}
515
516
517
518
519
520
521static int socket_complete_resume(struct pcmcia_socket *skt)
522{
523 int ret = 0;
524#ifdef CONFIG_CARDBUS
525 if (skt->state & SOCKET_CARDBUS) {
526
527
528
529 cb_free(skt);
530 ret = cb_alloc(skt);
531 if (ret)
532 cb_free(skt);
533 }
534#endif
535 return ret;
536}
537
538
539
540
541
542
543static int socket_resume(struct pcmcia_socket *skt)
544{
545 int err;
546 if (!(skt->state & SOCKET_SUSPEND))
547 return -EBUSY;
548
549 socket_early_resume(skt);
550 err = socket_late_resume(skt);
551 if (!err)
552 err = socket_complete_resume(skt);
553 return err;
554}
555
556static void socket_remove(struct pcmcia_socket *skt)
557{
558 dev_notice(&skt->dev, "pccard: card ejected from slot %d\n", skt->sock);
559 socket_shutdown(skt);
560}
561
562
563
564
565
566
567
568
569
570
571
572
573static void socket_detect_change(struct pcmcia_socket *skt)
574{
575 if (!(skt->state & SOCKET_SUSPEND)) {
576 int status;
577
578 if (!(skt->state & SOCKET_PRESENT))
579 msleep(20);
580
581 skt->ops->get_status(skt, &status);
582 if ((skt->state & SOCKET_PRESENT) &&
583 !(status & SS_DETECT))
584 socket_remove(skt);
585 if (!(skt->state & SOCKET_PRESENT) &&
586 (status & SS_DETECT))
587 socket_insert(skt);
588 }
589}
590
591static int pccardd(void *__skt)
592{
593 struct pcmcia_socket *skt = __skt;
594 int ret;
595
596 skt->thread = current;
597 skt->socket = dead_socket;
598 skt->ops->init(skt);
599 skt->ops->set_socket(skt, &skt->socket);
600
601
602 ret = device_register(&skt->dev);
603 if (ret) {
604 dev_warn(&skt->dev, "PCMCIA: unable to register socket\n");
605 skt->thread = NULL;
606 complete(&skt->thread_done);
607 return 0;
608 }
609 ret = pccard_sysfs_add_socket(&skt->dev);
610 if (ret)
611 dev_warn(&skt->dev, "err %d adding socket attributes\n", ret);
612
613 complete(&skt->thread_done);
614
615
616 msleep(250);
617
618 set_freezable();
619 for (;;) {
620 unsigned long flags;
621 unsigned int events;
622 unsigned int sysfs_events;
623
624 spin_lock_irqsave(&skt->thread_lock, flags);
625 events = skt->thread_events;
626 skt->thread_events = 0;
627 sysfs_events = skt->sysfs_events;
628 skt->sysfs_events = 0;
629 spin_unlock_irqrestore(&skt->thread_lock, flags);
630
631 mutex_lock(&skt->skt_mutex);
632 if (events & SS_DETECT)
633 socket_detect_change(skt);
634
635 if (sysfs_events) {
636 if (sysfs_events & PCMCIA_UEVENT_EJECT)
637 socket_remove(skt);
638 if (sysfs_events & PCMCIA_UEVENT_INSERT)
639 socket_insert(skt);
640 if ((sysfs_events & PCMCIA_UEVENT_SUSPEND) &&
641 !(skt->state & SOCKET_CARDBUS)) {
642 if (skt->callback)
643 ret = skt->callback->suspend(skt);
644 else
645 ret = 0;
646 if (!ret) {
647 socket_suspend(skt);
648 msleep(100);
649 }
650 }
651 if ((sysfs_events & PCMCIA_UEVENT_RESUME) &&
652 !(skt->state & SOCKET_CARDBUS)) {
653 ret = socket_resume(skt);
654 if (!ret && skt->callback)
655 skt->callback->resume(skt);
656 }
657 if ((sysfs_events & PCMCIA_UEVENT_REQUERY) &&
658 !(skt->state & SOCKET_CARDBUS)) {
659 if (!ret && skt->callback)
660 skt->callback->requery(skt);
661 }
662 }
663 mutex_unlock(&skt->skt_mutex);
664
665 if (events || sysfs_events)
666 continue;
667
668 if (kthread_should_stop())
669 break;
670
671 set_current_state(TASK_INTERRUPTIBLE);
672
673 schedule();
674
675
676 __set_current_state(TASK_RUNNING);
677
678 try_to_freeze();
679 }
680
681
682 if (skt->state & SOCKET_PRESENT) {
683 mutex_lock(&skt->skt_mutex);
684 socket_remove(skt);
685 mutex_unlock(&skt->skt_mutex);
686 }
687
688
689 pccard_sysfs_remove_socket(&skt->dev);
690 device_unregister(&skt->dev);
691
692 return 0;
693}
694
695
696
697
698
699void pcmcia_parse_events(struct pcmcia_socket *s, u_int events)
700{
701 unsigned long flags;
702 dev_dbg(&s->dev, "parse_events: events %08x\n", events);
703 if (s->thread) {
704 spin_lock_irqsave(&s->thread_lock, flags);
705 s->thread_events |= events;
706 spin_unlock_irqrestore(&s->thread_lock, flags);
707
708 wake_up_process(s->thread);
709 }
710}
711EXPORT_SYMBOL(pcmcia_parse_events);
712
713
714
715
716
717
718
719
720
721
722
723
724void pcmcia_parse_uevents(struct pcmcia_socket *s, u_int events)
725{
726 unsigned long flags;
727 dev_dbg(&s->dev, "parse_uevents: events %08x\n", events);
728 if (s->thread) {
729 spin_lock_irqsave(&s->thread_lock, flags);
730 s->sysfs_events |= events;
731 spin_unlock_irqrestore(&s->thread_lock, flags);
732
733 wake_up_process(s->thread);
734 }
735}
736EXPORT_SYMBOL(pcmcia_parse_uevents);
737
738
739
740int pccard_register_pcmcia(struct pcmcia_socket *s, struct pcmcia_callback *c)
741{
742 int ret = 0;
743
744
745 mutex_lock(&s->skt_mutex);
746
747 if (c) {
748
749 if (s->callback) {
750 ret = -EBUSY;
751 goto err;
752 }
753
754 s->callback = c;
755
756 if ((s->state & (SOCKET_PRESENT|SOCKET_CARDBUS)) == SOCKET_PRESENT)
757 s->callback->add(s);
758 } else
759 s->callback = NULL;
760 err:
761 mutex_unlock(&s->skt_mutex);
762
763 return ret;
764}
765EXPORT_SYMBOL(pccard_register_pcmcia);
766
767
768
769
770
771
772
773int pcmcia_reset_card(struct pcmcia_socket *skt)
774{
775 int ret;
776
777 dev_dbg(&skt->dev, "resetting socket\n");
778
779 mutex_lock(&skt->skt_mutex);
780 do {
781 if (!(skt->state & SOCKET_PRESENT)) {
782 dev_dbg(&skt->dev, "can't reset, not present\n");
783 ret = -ENODEV;
784 break;
785 }
786 if (skt->state & SOCKET_SUSPEND) {
787 dev_dbg(&skt->dev, "can't reset, suspended\n");
788 ret = -EBUSY;
789 break;
790 }
791 if (skt->state & SOCKET_CARDBUS) {
792 dev_dbg(&skt->dev, "can't reset, is cardbus\n");
793 ret = -EPERM;
794 break;
795 }
796
797 if (skt->callback)
798 skt->callback->suspend(skt);
799 mutex_lock(&skt->ops_mutex);
800 ret = socket_reset(skt);
801 mutex_unlock(&skt->ops_mutex);
802 if ((ret == 0) && (skt->callback))
803 skt->callback->resume(skt);
804
805 ret = 0;
806 } while (0);
807 mutex_unlock(&skt->skt_mutex);
808
809 return ret;
810}
811EXPORT_SYMBOL(pcmcia_reset_card);
812
813
814static int pcmcia_socket_uevent(struct device *dev,
815 struct kobj_uevent_env *env)
816{
817 struct pcmcia_socket *s = container_of(dev, struct pcmcia_socket, dev);
818
819 if (add_uevent_var(env, "SOCKET_NO=%u", s->sock))
820 return -ENOMEM;
821
822 return 0;
823}
824
825
826static struct completion pcmcia_unload;
827
828static void pcmcia_release_socket_class(struct class *data)
829{
830 complete(&pcmcia_unload);
831}
832
833
834#ifdef CONFIG_PM
835
836static int __pcmcia_pm_op(struct device *dev,
837 int (*callback) (struct pcmcia_socket *skt))
838{
839 struct pcmcia_socket *s = container_of(dev, struct pcmcia_socket, dev);
840 int ret;
841
842 mutex_lock(&s->skt_mutex);
843 ret = callback(s);
844 mutex_unlock(&s->skt_mutex);
845
846 return ret;
847}
848
849static int pcmcia_socket_dev_suspend_noirq(struct device *dev)
850{
851 return __pcmcia_pm_op(dev, socket_suspend);
852}
853
854static int pcmcia_socket_dev_resume_noirq(struct device *dev)
855{
856 return __pcmcia_pm_op(dev, socket_early_resume);
857}
858
859static int __used pcmcia_socket_dev_resume(struct device *dev)
860{
861 return __pcmcia_pm_op(dev, socket_late_resume);
862}
863
864static void __used pcmcia_socket_dev_complete(struct device *dev)
865{
866 WARN(__pcmcia_pm_op(dev, socket_complete_resume),
867 "failed to complete resume");
868}
869
870static const struct dev_pm_ops pcmcia_socket_pm_ops = {
871
872 SET_SYSTEM_SLEEP_PM_OPS(NULL,
873 pcmcia_socket_dev_resume)
874
875
876 .suspend_noirq = pcmcia_socket_dev_suspend_noirq,
877 .freeze_noirq = pcmcia_socket_dev_suspend_noirq,
878 .poweroff_noirq = pcmcia_socket_dev_suspend_noirq,
879
880
881 .resume_noirq = pcmcia_socket_dev_resume_noirq,
882 .thaw_noirq = pcmcia_socket_dev_resume_noirq,
883 .restore_noirq = pcmcia_socket_dev_resume_noirq,
884 .complete = pcmcia_socket_dev_complete,
885};
886
887#define PCMCIA_SOCKET_CLASS_PM_OPS (&pcmcia_socket_pm_ops)
888
889#else
890
891#define PCMCIA_SOCKET_CLASS_PM_OPS NULL
892
893#endif
894
895struct class pcmcia_socket_class = {
896 .name = "pcmcia_socket",
897 .dev_uevent = pcmcia_socket_uevent,
898 .dev_release = pcmcia_release_socket,
899 .class_release = pcmcia_release_socket_class,
900 .pm = PCMCIA_SOCKET_CLASS_PM_OPS,
901};
902EXPORT_SYMBOL(pcmcia_socket_class);
903
904
905static int __init init_pcmcia_cs(void)
906{
907 init_completion(&pcmcia_unload);
908 return class_register(&pcmcia_socket_class);
909}
910
911static void __exit exit_pcmcia_cs(void)
912{
913 class_unregister(&pcmcia_socket_class);
914 wait_for_completion(&pcmcia_unload);
915}
916
917subsys_initcall(init_pcmcia_cs);
918module_exit(exit_pcmcia_cs);
919
920