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15#include <media/rc-core.h>
16#include <linux/spinlock.h>
17#include <linux/delay.h>
18#include <linux/input.h>
19#include <linux/slab.h>
20#include <linux/device.h>
21#include <linux/module.h>
22#include "rc-core-priv.h"
23
24
25#define IR_TAB_MIN_SIZE 256
26#define IR_TAB_MAX_SIZE 8192
27
28
29#define IR_KEYPRESS_TIMEOUT 250
30
31
32static LIST_HEAD(rc_map_list);
33static DEFINE_SPINLOCK(rc_map_lock);
34
35static struct rc_map_list *seek_rc_map(const char *name)
36{
37 struct rc_map_list *map = NULL;
38
39 spin_lock(&rc_map_lock);
40 list_for_each_entry(map, &rc_map_list, list) {
41 if (!strcmp(name, map->map.name)) {
42 spin_unlock(&rc_map_lock);
43 return map;
44 }
45 }
46 spin_unlock(&rc_map_lock);
47
48 return NULL;
49}
50
51struct rc_map *rc_map_get(const char *name)
52{
53
54 struct rc_map_list *map;
55
56 map = seek_rc_map(name);
57#ifdef MODULE
58 if (!map) {
59 int rc = request_module(name);
60 if (rc < 0) {
61 printk(KERN_ERR "Couldn't load IR keymap %s\n", name);
62 return NULL;
63 }
64 msleep(20);
65
66 map = seek_rc_map(name);
67 }
68#endif
69 if (!map) {
70 printk(KERN_ERR "IR keymap %s not found\n", name);
71 return NULL;
72 }
73
74 printk(KERN_INFO "Registered IR keymap %s\n", map->map.name);
75
76 return &map->map;
77}
78EXPORT_SYMBOL_GPL(rc_map_get);
79
80int rc_map_register(struct rc_map_list *map)
81{
82 spin_lock(&rc_map_lock);
83 list_add_tail(&map->list, &rc_map_list);
84 spin_unlock(&rc_map_lock);
85 return 0;
86}
87EXPORT_SYMBOL_GPL(rc_map_register);
88
89void rc_map_unregister(struct rc_map_list *map)
90{
91 spin_lock(&rc_map_lock);
92 list_del(&map->list);
93 spin_unlock(&rc_map_lock);
94}
95EXPORT_SYMBOL_GPL(rc_map_unregister);
96
97
98static struct rc_map_table empty[] = {
99 { 0x2a, KEY_COFFEE },
100};
101
102static struct rc_map_list empty_map = {
103 .map = {
104 .scan = empty,
105 .size = ARRAY_SIZE(empty),
106 .rc_type = RC_TYPE_UNKNOWN,
107 .name = RC_MAP_EMPTY,
108 }
109};
110
111
112
113
114
115
116
117
118
119
120
121
122static int ir_create_table(struct rc_map *rc_map,
123 const char *name, u64 rc_type, size_t size)
124{
125 rc_map->name = name;
126 rc_map->rc_type = rc_type;
127 rc_map->alloc = roundup_pow_of_two(size * sizeof(struct rc_map_table));
128 rc_map->size = rc_map->alloc / sizeof(struct rc_map_table);
129 rc_map->scan = kmalloc(rc_map->alloc, GFP_KERNEL);
130 if (!rc_map->scan)
131 return -ENOMEM;
132
133 IR_dprintk(1, "Allocated space for %u keycode entries (%u bytes)\n",
134 rc_map->size, rc_map->alloc);
135 return 0;
136}
137
138
139
140
141
142
143
144
145static void ir_free_table(struct rc_map *rc_map)
146{
147 rc_map->size = 0;
148 kfree(rc_map->scan);
149 rc_map->scan = NULL;
150}
151
152
153
154
155
156
157
158
159
160
161static int ir_resize_table(struct rc_map *rc_map, gfp_t gfp_flags)
162{
163 unsigned int oldalloc = rc_map->alloc;
164 unsigned int newalloc = oldalloc;
165 struct rc_map_table *oldscan = rc_map->scan;
166 struct rc_map_table *newscan;
167
168 if (rc_map->size == rc_map->len) {
169
170 if (rc_map->alloc >= IR_TAB_MAX_SIZE)
171 return -ENOMEM;
172
173 newalloc *= 2;
174 IR_dprintk(1, "Growing table to %u bytes\n", newalloc);
175 }
176
177 if ((rc_map->len * 3 < rc_map->size) && (oldalloc > IR_TAB_MIN_SIZE)) {
178
179 newalloc /= 2;
180 IR_dprintk(1, "Shrinking table to %u bytes\n", newalloc);
181 }
182
183 if (newalloc == oldalloc)
184 return 0;
185
186 newscan = kmalloc(newalloc, gfp_flags);
187 if (!newscan) {
188 IR_dprintk(1, "Failed to kmalloc %u bytes\n", newalloc);
189 return -ENOMEM;
190 }
191
192 memcpy(newscan, rc_map->scan, rc_map->len * sizeof(struct rc_map_table));
193 rc_map->scan = newscan;
194 rc_map->alloc = newalloc;
195 rc_map->size = rc_map->alloc / sizeof(struct rc_map_table);
196 kfree(oldscan);
197 return 0;
198}
199
200
201
202
203
204
205
206
207
208
209
210
211static unsigned int ir_update_mapping(struct rc_dev *dev,
212 struct rc_map *rc_map,
213 unsigned int index,
214 unsigned int new_keycode)
215{
216 int old_keycode = rc_map->scan[index].keycode;
217 int i;
218
219
220 if (new_keycode == KEY_RESERVED || new_keycode == KEY_UNKNOWN) {
221 IR_dprintk(1, "#%d: Deleting scan 0x%04x\n",
222 index, rc_map->scan[index].scancode);
223 rc_map->len--;
224 memmove(&rc_map->scan[index], &rc_map->scan[index+ 1],
225 (rc_map->len - index) * sizeof(struct rc_map_table));
226 } else {
227 IR_dprintk(1, "#%d: %s scan 0x%04x with key 0x%04x\n",
228 index,
229 old_keycode == KEY_RESERVED ? "New" : "Replacing",
230 rc_map->scan[index].scancode, new_keycode);
231 rc_map->scan[index].keycode = new_keycode;
232 __set_bit(new_keycode, dev->input_dev->keybit);
233 }
234
235 if (old_keycode != KEY_RESERVED) {
236
237 __clear_bit(old_keycode, dev->input_dev->keybit);
238
239 for (i = 0; i < rc_map->len; i++) {
240 if (rc_map->scan[i].keycode == old_keycode) {
241 __set_bit(old_keycode, dev->input_dev->keybit);
242 break;
243 }
244 }
245
246
247 ir_resize_table(rc_map, GFP_ATOMIC);
248 }
249
250 return old_keycode;
251}
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267static unsigned int ir_establish_scancode(struct rc_dev *dev,
268 struct rc_map *rc_map,
269 unsigned int scancode,
270 bool resize)
271{
272 unsigned int i;
273
274
275
276
277
278
279
280
281
282 if (dev->scanmask)
283 scancode &= dev->scanmask;
284
285
286 for (i = 0; i < rc_map->len; i++) {
287 if (rc_map->scan[i].scancode == scancode)
288 return i;
289
290
291 if (rc_map->scan[i].scancode >= scancode)
292 break;
293 }
294
295
296 if (rc_map->size == rc_map->len) {
297 if (!resize || ir_resize_table(rc_map, GFP_ATOMIC))
298 return -1U;
299 }
300
301
302 if (i < rc_map->len)
303 memmove(&rc_map->scan[i + 1], &rc_map->scan[i],
304 (rc_map->len - i) * sizeof(struct rc_map_table));
305 rc_map->scan[i].scancode = scancode;
306 rc_map->scan[i].keycode = KEY_RESERVED;
307 rc_map->len++;
308
309 return i;
310}
311
312
313
314
315
316
317
318
319
320
321static int ir_setkeycode(struct input_dev *idev,
322 const struct input_keymap_entry *ke,
323 unsigned int *old_keycode)
324{
325 struct rc_dev *rdev = input_get_drvdata(idev);
326 struct rc_map *rc_map = &rdev->rc_map;
327 unsigned int index;
328 unsigned int scancode;
329 int retval = 0;
330 unsigned long flags;
331
332 spin_lock_irqsave(&rc_map->lock, flags);
333
334 if (ke->flags & INPUT_KEYMAP_BY_INDEX) {
335 index = ke->index;
336 if (index >= rc_map->len) {
337 retval = -EINVAL;
338 goto out;
339 }
340 } else {
341 retval = input_scancode_to_scalar(ke, &scancode);
342 if (retval)
343 goto out;
344
345 index = ir_establish_scancode(rdev, rc_map, scancode, true);
346 if (index >= rc_map->len) {
347 retval = -ENOMEM;
348 goto out;
349 }
350 }
351
352 *old_keycode = ir_update_mapping(rdev, rc_map, index, ke->keycode);
353
354out:
355 spin_unlock_irqrestore(&rc_map->lock, flags);
356 return retval;
357}
358
359
360
361
362
363
364
365
366
367
368static int ir_setkeytable(struct rc_dev *dev,
369 const struct rc_map *from)
370{
371 struct rc_map *rc_map = &dev->rc_map;
372 unsigned int i, index;
373 int rc;
374
375 rc = ir_create_table(rc_map, from->name,
376 from->rc_type, from->size);
377 if (rc)
378 return rc;
379
380 IR_dprintk(1, "Allocated space for %u keycode entries (%u bytes)\n",
381 rc_map->size, rc_map->alloc);
382
383 for (i = 0; i < from->size; i++) {
384 index = ir_establish_scancode(dev, rc_map,
385 from->scan[i].scancode, false);
386 if (index >= rc_map->len) {
387 rc = -ENOMEM;
388 break;
389 }
390
391 ir_update_mapping(dev, rc_map, index,
392 from->scan[i].keycode);
393 }
394
395 if (rc)
396 ir_free_table(rc_map);
397
398 return rc;
399}
400
401
402
403
404
405
406
407
408
409
410static unsigned int ir_lookup_by_scancode(const struct rc_map *rc_map,
411 unsigned int scancode)
412{
413 int start = 0;
414 int end = rc_map->len - 1;
415 int mid;
416
417 while (start <= end) {
418 mid = (start + end) / 2;
419 if (rc_map->scan[mid].scancode < scancode)
420 start = mid + 1;
421 else if (rc_map->scan[mid].scancode > scancode)
422 end = mid - 1;
423 else
424 return mid;
425 }
426
427 return -1U;
428}
429
430
431
432
433
434
435
436
437
438
439static int ir_getkeycode(struct input_dev *idev,
440 struct input_keymap_entry *ke)
441{
442 struct rc_dev *rdev = input_get_drvdata(idev);
443 struct rc_map *rc_map = &rdev->rc_map;
444 struct rc_map_table *entry;
445 unsigned long flags;
446 unsigned int index;
447 unsigned int scancode;
448 int retval;
449
450 spin_lock_irqsave(&rc_map->lock, flags);
451
452 if (ke->flags & INPUT_KEYMAP_BY_INDEX) {
453 index = ke->index;
454 } else {
455 retval = input_scancode_to_scalar(ke, &scancode);
456 if (retval)
457 goto out;
458
459 index = ir_lookup_by_scancode(rc_map, scancode);
460 }
461
462 if (index < rc_map->len) {
463 entry = &rc_map->scan[index];
464
465 ke->index = index;
466 ke->keycode = entry->keycode;
467 ke->len = sizeof(entry->scancode);
468 memcpy(ke->scancode, &entry->scancode, sizeof(entry->scancode));
469
470 } else if (!(ke->flags & INPUT_KEYMAP_BY_INDEX)) {
471
472
473
474
475
476 ke->index = index;
477 ke->keycode = KEY_RESERVED;
478 } else {
479 retval = -EINVAL;
480 goto out;
481 }
482
483 retval = 0;
484
485out:
486 spin_unlock_irqrestore(&rc_map->lock, flags);
487 return retval;
488}
489
490
491
492
493
494
495
496
497
498
499
500u32 rc_g_keycode_from_table(struct rc_dev *dev, u32 scancode)
501{
502 struct rc_map *rc_map = &dev->rc_map;
503 unsigned int keycode;
504 unsigned int index;
505 unsigned long flags;
506
507 spin_lock_irqsave(&rc_map->lock, flags);
508
509 index = ir_lookup_by_scancode(rc_map, scancode);
510 keycode = index < rc_map->len ?
511 rc_map->scan[index].keycode : KEY_RESERVED;
512
513 spin_unlock_irqrestore(&rc_map->lock, flags);
514
515 if (keycode != KEY_RESERVED)
516 IR_dprintk(1, "%s: scancode 0x%04x keycode 0x%02x\n",
517 dev->input_name, scancode, keycode);
518
519 return keycode;
520}
521EXPORT_SYMBOL_GPL(rc_g_keycode_from_table);
522
523
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525
526
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528
529
530
531static void ir_do_keyup(struct rc_dev *dev, bool sync)
532{
533 if (!dev->keypressed)
534 return;
535
536 IR_dprintk(1, "keyup key 0x%04x\n", dev->last_keycode);
537 input_report_key(dev->input_dev, dev->last_keycode, 0);
538 if (sync)
539 input_sync(dev->input_dev);
540 dev->keypressed = false;
541}
542
543
544
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546
547
548
549
550void rc_keyup(struct rc_dev *dev)
551{
552 unsigned long flags;
553
554 spin_lock_irqsave(&dev->keylock, flags);
555 ir_do_keyup(dev, true);
556 spin_unlock_irqrestore(&dev->keylock, flags);
557}
558EXPORT_SYMBOL_GPL(rc_keyup);
559
560
561
562
563
564
565
566
567static void ir_timer_keyup(unsigned long cookie)
568{
569 struct rc_dev *dev = (struct rc_dev *)cookie;
570 unsigned long flags;
571
572
573
574
575
576
577
578
579
580
581
582 spin_lock_irqsave(&dev->keylock, flags);
583 if (time_is_before_eq_jiffies(dev->keyup_jiffies))
584 ir_do_keyup(dev, true);
585 spin_unlock_irqrestore(&dev->keylock, flags);
586}
587
588
589
590
591
592
593
594
595
596void rc_repeat(struct rc_dev *dev)
597{
598 unsigned long flags;
599
600 spin_lock_irqsave(&dev->keylock, flags);
601
602 input_event(dev->input_dev, EV_MSC, MSC_SCAN, dev->last_scancode);
603 input_sync(dev->input_dev);
604
605 if (!dev->keypressed)
606 goto out;
607
608 dev->keyup_jiffies = jiffies + msecs_to_jiffies(IR_KEYPRESS_TIMEOUT);
609 mod_timer(&dev->timer_keyup, dev->keyup_jiffies);
610
611out:
612 spin_unlock_irqrestore(&dev->keylock, flags);
613}
614EXPORT_SYMBOL_GPL(rc_repeat);
615
616
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618
619
620
621
622
623
624
625
626static void ir_do_keydown(struct rc_dev *dev, int scancode,
627 u32 keycode, u8 toggle)
628{
629 bool new_event = !dev->keypressed ||
630 dev->last_scancode != scancode ||
631 dev->last_toggle != toggle;
632
633 if (new_event && dev->keypressed)
634 ir_do_keyup(dev, false);
635
636 input_event(dev->input_dev, EV_MSC, MSC_SCAN, scancode);
637
638 if (new_event && keycode != KEY_RESERVED) {
639
640 dev->keypressed = true;
641 dev->last_scancode = scancode;
642 dev->last_toggle = toggle;
643 dev->last_keycode = keycode;
644
645 IR_dprintk(1, "%s: key down event, "
646 "key 0x%04x, scancode 0x%04x\n",
647 dev->input_name, keycode, scancode);
648 input_report_key(dev->input_dev, keycode, 1);
649 }
650
651 input_sync(dev->input_dev);
652}
653
654
655
656
657
658
659
660
661
662
663
664void rc_keydown(struct rc_dev *dev, int scancode, u8 toggle)
665{
666 unsigned long flags;
667 u32 keycode = rc_g_keycode_from_table(dev, scancode);
668
669 spin_lock_irqsave(&dev->keylock, flags);
670 ir_do_keydown(dev, scancode, keycode, toggle);
671
672 if (dev->keypressed) {
673 dev->keyup_jiffies = jiffies + msecs_to_jiffies(IR_KEYPRESS_TIMEOUT);
674 mod_timer(&dev->timer_keyup, dev->keyup_jiffies);
675 }
676 spin_unlock_irqrestore(&dev->keylock, flags);
677}
678EXPORT_SYMBOL_GPL(rc_keydown);
679
680
681
682
683
684
685
686
687
688
689
690
691void rc_keydown_notimeout(struct rc_dev *dev, int scancode, u8 toggle)
692{
693 unsigned long flags;
694 u32 keycode = rc_g_keycode_from_table(dev, scancode);
695
696 spin_lock_irqsave(&dev->keylock, flags);
697 ir_do_keydown(dev, scancode, keycode, toggle);
698 spin_unlock_irqrestore(&dev->keylock, flags);
699}
700EXPORT_SYMBOL_GPL(rc_keydown_notimeout);
701
702static int ir_open(struct input_dev *idev)
703{
704 struct rc_dev *rdev = input_get_drvdata(idev);
705
706 return rdev->open(rdev);
707}
708
709static void ir_close(struct input_dev *idev)
710{
711 struct rc_dev *rdev = input_get_drvdata(idev);
712
713 if (rdev)
714 rdev->close(rdev);
715}
716
717
718static char *ir_devnode(struct device *dev, umode_t *mode)
719{
720 return kasprintf(GFP_KERNEL, "rc/%s", dev_name(dev));
721}
722
723static struct class ir_input_class = {
724 .name = "rc",
725 .devnode = ir_devnode,
726};
727
728static struct {
729 u64 type;
730 char *name;
731} proto_names[] = {
732 { RC_TYPE_UNKNOWN, "unknown" },
733 { RC_TYPE_RC5, "rc-5" },
734 { RC_TYPE_NEC, "nec" },
735 { RC_TYPE_RC6, "rc-6" },
736 { RC_TYPE_JVC, "jvc" },
737 { RC_TYPE_SONY, "sony" },
738 { RC_TYPE_RC5_SZ, "rc-5-sz" },
739 { RC_TYPE_SANYO, "sanyo" },
740 { RC_TYPE_MCE_KBD, "mce_kbd" },
741 { RC_TYPE_LIRC, "lirc" },
742 { RC_TYPE_OTHER, "other" },
743};
744
745#define PROTO_NONE "none"
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761static ssize_t show_protocols(struct device *device,
762 struct device_attribute *mattr, char *buf)
763{
764 struct rc_dev *dev = to_rc_dev(device);
765 u64 allowed, enabled;
766 char *tmp = buf;
767 int i;
768
769
770 if (!dev)
771 return -EINVAL;
772
773 mutex_lock(&dev->lock);
774
775 if (dev->driver_type == RC_DRIVER_SCANCODE) {
776 enabled = dev->rc_map.rc_type;
777 allowed = dev->allowed_protos;
778 } else if (dev->raw) {
779 enabled = dev->raw->enabled_protocols;
780 allowed = ir_raw_get_allowed_protocols();
781 } else
782 return -ENODEV;
783
784 IR_dprintk(1, "allowed - 0x%llx, enabled - 0x%llx\n",
785 (long long)allowed,
786 (long long)enabled);
787
788 for (i = 0; i < ARRAY_SIZE(proto_names); i++) {
789 if (allowed & enabled & proto_names[i].type)
790 tmp += sprintf(tmp, "[%s] ", proto_names[i].name);
791 else if (allowed & proto_names[i].type)
792 tmp += sprintf(tmp, "%s ", proto_names[i].name);
793 }
794
795 if (tmp != buf)
796 tmp--;
797 *tmp = '\n';
798
799 mutex_unlock(&dev->lock);
800
801 return tmp + 1 - buf;
802}
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823static ssize_t store_protocols(struct device *device,
824 struct device_attribute *mattr,
825 const char *data,
826 size_t len)
827{
828 struct rc_dev *dev = to_rc_dev(device);
829 bool enable, disable;
830 const char *tmp;
831 u64 type;
832 u64 mask;
833 int rc, i, count = 0;
834 unsigned long flags;
835 ssize_t ret;
836
837
838 if (!dev)
839 return -EINVAL;
840
841 mutex_lock(&dev->lock);
842
843 if (dev->driver_type == RC_DRIVER_SCANCODE)
844 type = dev->rc_map.rc_type;
845 else if (dev->raw)
846 type = dev->raw->enabled_protocols;
847 else {
848 IR_dprintk(1, "Protocol switching not supported\n");
849 ret = -EINVAL;
850 goto out;
851 }
852
853 while ((tmp = strsep((char **) &data, " \n")) != NULL) {
854 if (!*tmp)
855 break;
856
857 if (*tmp == '+') {
858 enable = true;
859 disable = false;
860 tmp++;
861 } else if (*tmp == '-') {
862 enable = false;
863 disable = true;
864 tmp++;
865 } else {
866 enable = false;
867 disable = false;
868 }
869
870 if (!enable && !disable && !strncasecmp(tmp, PROTO_NONE, sizeof(PROTO_NONE))) {
871 tmp += sizeof(PROTO_NONE);
872 mask = 0;
873 count++;
874 } else {
875 for (i = 0; i < ARRAY_SIZE(proto_names); i++) {
876 if (!strcasecmp(tmp, proto_names[i].name)) {
877 tmp += strlen(proto_names[i].name);
878 mask = proto_names[i].type;
879 break;
880 }
881 }
882 if (i == ARRAY_SIZE(proto_names)) {
883 IR_dprintk(1, "Unknown protocol: '%s'\n", tmp);
884 ret = -EINVAL;
885 goto out;
886 }
887 count++;
888 }
889
890 if (enable)
891 type |= mask;
892 else if (disable)
893 type &= ~mask;
894 else
895 type = mask;
896 }
897
898 if (!count) {
899 IR_dprintk(1, "Protocol not specified\n");
900 ret = -EINVAL;
901 goto out;
902 }
903
904 if (dev->change_protocol) {
905 rc = dev->change_protocol(dev, type);
906 if (rc < 0) {
907 IR_dprintk(1, "Error setting protocols to 0x%llx\n",
908 (long long)type);
909 ret = -EINVAL;
910 goto out;
911 }
912 }
913
914 if (dev->driver_type == RC_DRIVER_SCANCODE) {
915 spin_lock_irqsave(&dev->rc_map.lock, flags);
916 dev->rc_map.rc_type = type;
917 spin_unlock_irqrestore(&dev->rc_map.lock, flags);
918 } else {
919 dev->raw->enabled_protocols = type;
920 }
921
922 IR_dprintk(1, "Current protocol(s): 0x%llx\n",
923 (long long)type);
924
925 ret = len;
926
927out:
928 mutex_unlock(&dev->lock);
929 return ret;
930}
931
932static void rc_dev_release(struct device *device)
933{
934}
935
936#define ADD_HOTPLUG_VAR(fmt, val...) \
937 do { \
938 int err = add_uevent_var(env, fmt, val); \
939 if (err) \
940 return err; \
941 } while (0)
942
943static int rc_dev_uevent(struct device *device, struct kobj_uevent_env *env)
944{
945 struct rc_dev *dev = to_rc_dev(device);
946
947 if (!dev || !dev->input_dev)
948 return -ENODEV;
949
950 if (dev->rc_map.name)
951 ADD_HOTPLUG_VAR("NAME=%s", dev->rc_map.name);
952 if (dev->driver_name)
953 ADD_HOTPLUG_VAR("DRV_NAME=%s", dev->driver_name);
954
955 return 0;
956}
957
958
959
960
961static DEVICE_ATTR(protocols, S_IRUGO | S_IWUSR,
962 show_protocols, store_protocols);
963
964static struct attribute *rc_dev_attrs[] = {
965 &dev_attr_protocols.attr,
966 NULL,
967};
968
969static struct attribute_group rc_dev_attr_grp = {
970 .attrs = rc_dev_attrs,
971};
972
973static const struct attribute_group *rc_dev_attr_groups[] = {
974 &rc_dev_attr_grp,
975 NULL
976};
977
978static struct device_type rc_dev_type = {
979 .groups = rc_dev_attr_groups,
980 .release = rc_dev_release,
981 .uevent = rc_dev_uevent,
982};
983
984struct rc_dev *rc_allocate_device(void)
985{
986 struct rc_dev *dev;
987
988 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
989 if (!dev)
990 return NULL;
991
992 dev->input_dev = input_allocate_device();
993 if (!dev->input_dev) {
994 kfree(dev);
995 return NULL;
996 }
997
998 dev->input_dev->getkeycode = ir_getkeycode;
999 dev->input_dev->setkeycode = ir_setkeycode;
1000 input_set_drvdata(dev->input_dev, dev);
1001
1002 spin_lock_init(&dev->rc_map.lock);
1003 spin_lock_init(&dev->keylock);
1004 mutex_init(&dev->lock);
1005 setup_timer(&dev->timer_keyup, ir_timer_keyup, (unsigned long)dev);
1006
1007 dev->dev.type = &rc_dev_type;
1008 dev->dev.class = &ir_input_class;
1009 device_initialize(&dev->dev);
1010
1011 __module_get(THIS_MODULE);
1012 return dev;
1013}
1014EXPORT_SYMBOL_GPL(rc_allocate_device);
1015
1016void rc_free_device(struct rc_dev *dev)
1017{
1018 if (!dev)
1019 return;
1020
1021 if (dev->input_dev)
1022 input_free_device(dev->input_dev);
1023
1024 put_device(&dev->dev);
1025
1026 kfree(dev);
1027 module_put(THIS_MODULE);
1028}
1029EXPORT_SYMBOL_GPL(rc_free_device);
1030
1031int rc_register_device(struct rc_dev *dev)
1032{
1033 static bool raw_init = false;
1034 static atomic_t devno = ATOMIC_INIT(0);
1035 struct rc_map *rc_map;
1036 const char *path;
1037 int rc;
1038
1039 if (!dev || !dev->map_name)
1040 return -EINVAL;
1041
1042 rc_map = rc_map_get(dev->map_name);
1043 if (!rc_map)
1044 rc_map = rc_map_get(RC_MAP_EMPTY);
1045 if (!rc_map || !rc_map->scan || rc_map->size == 0)
1046 return -EINVAL;
1047
1048 set_bit(EV_KEY, dev->input_dev->evbit);
1049 set_bit(EV_REP, dev->input_dev->evbit);
1050 set_bit(EV_MSC, dev->input_dev->evbit);
1051 set_bit(MSC_SCAN, dev->input_dev->mscbit);
1052 if (dev->open)
1053 dev->input_dev->open = ir_open;
1054 if (dev->close)
1055 dev->input_dev->close = ir_close;
1056
1057
1058
1059
1060
1061
1062
1063
1064 mutex_lock(&dev->lock);
1065
1066 dev->devno = (unsigned long)(atomic_inc_return(&devno) - 1);
1067 dev_set_name(&dev->dev, "rc%ld", dev->devno);
1068 dev_set_drvdata(&dev->dev, dev);
1069 rc = device_add(&dev->dev);
1070 if (rc)
1071 goto out_unlock;
1072
1073 rc = ir_setkeytable(dev, rc_map);
1074 if (rc)
1075 goto out_dev;
1076
1077 dev->input_dev->dev.parent = &dev->dev;
1078 memcpy(&dev->input_dev->id, &dev->input_id, sizeof(dev->input_id));
1079 dev->input_dev->phys = dev->input_phys;
1080 dev->input_dev->name = dev->input_name;
1081 rc = input_register_device(dev->input_dev);
1082 if (rc)
1083 goto out_table;
1084
1085
1086
1087
1088
1089
1090
1091 dev->input_dev->rep[REP_DELAY] = 500;
1092
1093
1094
1095
1096
1097
1098 dev->input_dev->rep[REP_PERIOD] = 125;
1099
1100 path = kobject_get_path(&dev->dev.kobj, GFP_KERNEL);
1101 printk(KERN_INFO "%s: %s as %s\n",
1102 dev_name(&dev->dev),
1103 dev->input_name ? dev->input_name : "Unspecified device",
1104 path ? path : "N/A");
1105 kfree(path);
1106
1107 if (dev->driver_type == RC_DRIVER_IR_RAW) {
1108
1109 if (!raw_init) {
1110 IR_dprintk(1, "Loading raw decoders\n");
1111 ir_raw_init();
1112 raw_init = true;
1113 }
1114 rc = ir_raw_event_register(dev);
1115 if (rc < 0)
1116 goto out_input;
1117 }
1118
1119 if (dev->change_protocol) {
1120 rc = dev->change_protocol(dev, rc_map->rc_type);
1121 if (rc < 0)
1122 goto out_raw;
1123 }
1124
1125 mutex_unlock(&dev->lock);
1126
1127 IR_dprintk(1, "Registered rc%ld (driver: %s, remote: %s, mode %s)\n",
1128 dev->devno,
1129 dev->driver_name ? dev->driver_name : "unknown",
1130 rc_map->name ? rc_map->name : "unknown",
1131 dev->driver_type == RC_DRIVER_IR_RAW ? "raw" : "cooked");
1132
1133 return 0;
1134
1135out_raw:
1136 if (dev->driver_type == RC_DRIVER_IR_RAW)
1137 ir_raw_event_unregister(dev);
1138out_input:
1139 input_unregister_device(dev->input_dev);
1140 dev->input_dev = NULL;
1141out_table:
1142 ir_free_table(&dev->rc_map);
1143out_dev:
1144 device_del(&dev->dev);
1145out_unlock:
1146 mutex_unlock(&dev->lock);
1147 return rc;
1148}
1149EXPORT_SYMBOL_GPL(rc_register_device);
1150
1151void rc_unregister_device(struct rc_dev *dev)
1152{
1153 if (!dev)
1154 return;
1155
1156 del_timer_sync(&dev->timer_keyup);
1157
1158 if (dev->driver_type == RC_DRIVER_IR_RAW)
1159 ir_raw_event_unregister(dev);
1160
1161
1162 ir_free_table(&dev->rc_map);
1163 IR_dprintk(1, "Freed keycode table\n");
1164
1165 input_unregister_device(dev->input_dev);
1166 dev->input_dev = NULL;
1167
1168 device_del(&dev->dev);
1169
1170 rc_free_device(dev);
1171}
1172
1173EXPORT_SYMBOL_GPL(rc_unregister_device);
1174
1175
1176
1177
1178
1179static int __init rc_core_init(void)
1180{
1181 int rc = class_register(&ir_input_class);
1182 if (rc) {
1183 printk(KERN_ERR "rc_core: unable to register rc class\n");
1184 return rc;
1185 }
1186
1187 rc_map_register(&empty_map);
1188
1189 return 0;
1190}
1191
1192static void __exit rc_core_exit(void)
1193{
1194 class_unregister(&ir_input_class);
1195 rc_map_unregister(&empty_map);
1196}
1197
1198module_init(rc_core_init);
1199module_exit(rc_core_exit);
1200
1201int rc_core_debug;
1202EXPORT_SYMBOL_GPL(rc_core_debug);
1203module_param_named(debug, rc_core_debug, int, 0644);
1204
1205MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@redhat.com>");
1206MODULE_LICENSE("GPL");
1207