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-rw-r--r--drivers/media/IR/ir-keytable.c710
1 files changed, 0 insertions, 710 deletions
diff --git a/drivers/media/IR/ir-keytable.c b/drivers/media/IR/ir-keytable.c
deleted file mode 100644
index f60107c3b091..000000000000
--- a/drivers/media/IR/ir-keytable.c
+++ /dev/null
@@ -1,710 +0,0 @@
1/* ir-keytable.c - handle IR scancode->keycode tables
2 *
3 * Copyright (C) 2009 by Mauro Carvalho Chehab <mchehab@redhat.com>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation version 2 of the License.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 */
14
15
16#include <linux/input.h>
17#include <linux/slab.h>
18#include "ir-core-priv.h"
19
20/* Sizes are in bytes, 256 bytes allows for 32 entries on x64 */
21#define IR_TAB_MIN_SIZE 256
22#define IR_TAB_MAX_SIZE 8192
23
24/* FIXME: IR_KEYPRESS_TIMEOUT should be protocol specific */
25#define IR_KEYPRESS_TIMEOUT 250
26
27/**
28 * ir_create_table() - initializes a scancode table
29 * @rc_tab: the ir_scancode_table to initialize
30 * @name: name to assign to the table
31 * @ir_type: ir type to assign to the new table
32 * @size: initial size of the table
33 * @return: zero on success or a negative error code
34 *
35 * This routine will initialize the ir_scancode_table and will allocate
36 * memory to hold at least the specified number elements.
37 */
38static int ir_create_table(struct ir_scancode_table *rc_tab,
39 const char *name, u64 ir_type, size_t size)
40{
41 rc_tab->name = name;
42 rc_tab->ir_type = ir_type;
43 rc_tab->alloc = roundup_pow_of_two(size * sizeof(struct ir_scancode));
44 rc_tab->size = rc_tab->alloc / sizeof(struct ir_scancode);
45 rc_tab->scan = kmalloc(rc_tab->alloc, GFP_KERNEL);
46 if (!rc_tab->scan)
47 return -ENOMEM;
48
49 IR_dprintk(1, "Allocated space for %u keycode entries (%u bytes)\n",
50 rc_tab->size, rc_tab->alloc);
51 return 0;
52}
53
54/**
55 * ir_free_table() - frees memory allocated by a scancode table
56 * @rc_tab: the table whose mappings need to be freed
57 *
58 * This routine will free memory alloctaed for key mappings used by given
59 * scancode table.
60 */
61static void ir_free_table(struct ir_scancode_table *rc_tab)
62{
63 rc_tab->size = 0;
64 kfree(rc_tab->scan);
65 rc_tab->scan = NULL;
66}
67
68/**
69 * ir_resize_table() - resizes a scancode table if necessary
70 * @rc_tab: the ir_scancode_table to resize
71 * @gfp_flags: gfp flags to use when allocating memory
72 * @return: zero on success or a negative error code
73 *
74 * This routine will shrink the ir_scancode_table if it has lots of
75 * unused entries and grow it if it is full.
76 */
77static int ir_resize_table(struct ir_scancode_table *rc_tab, gfp_t gfp_flags)
78{
79 unsigned int oldalloc = rc_tab->alloc;
80 unsigned int newalloc = oldalloc;
81 struct ir_scancode *oldscan = rc_tab->scan;
82 struct ir_scancode *newscan;
83
84 if (rc_tab->size == rc_tab->len) {
85 /* All entries in use -> grow keytable */
86 if (rc_tab->alloc >= IR_TAB_MAX_SIZE)
87 return -ENOMEM;
88
89 newalloc *= 2;
90 IR_dprintk(1, "Growing table to %u bytes\n", newalloc);
91 }
92
93 if ((rc_tab->len * 3 < rc_tab->size) && (oldalloc > IR_TAB_MIN_SIZE)) {
94 /* Less than 1/3 of entries in use -> shrink keytable */
95 newalloc /= 2;
96 IR_dprintk(1, "Shrinking table to %u bytes\n", newalloc);
97 }
98
99 if (newalloc == oldalloc)
100 return 0;
101
102 newscan = kmalloc(newalloc, gfp_flags);
103 if (!newscan) {
104 IR_dprintk(1, "Failed to kmalloc %u bytes\n", newalloc);
105 return -ENOMEM;
106 }
107
108 memcpy(newscan, rc_tab->scan, rc_tab->len * sizeof(struct ir_scancode));
109 rc_tab->scan = newscan;
110 rc_tab->alloc = newalloc;
111 rc_tab->size = rc_tab->alloc / sizeof(struct ir_scancode);
112 kfree(oldscan);
113 return 0;
114}
115
116/**
117 * ir_update_mapping() - set a keycode in the scancode->keycode table
118 * @dev: the struct input_dev device descriptor
119 * @rc_tab: scancode table to be adjusted
120 * @index: index of the mapping that needs to be updated
121 * @keycode: the desired keycode
122 * @return: previous keycode assigned to the mapping
123 *
124 * This routine is used to update scancode->keycopde mapping at given
125 * position.
126 */
127static unsigned int ir_update_mapping(struct input_dev *dev,
128 struct ir_scancode_table *rc_tab,
129 unsigned int index,
130 unsigned int new_keycode)
131{
132 int old_keycode = rc_tab->scan[index].keycode;
133 int i;
134
135 /* Did the user wish to remove the mapping? */
136 if (new_keycode == KEY_RESERVED || new_keycode == KEY_UNKNOWN) {
137 IR_dprintk(1, "#%d: Deleting scan 0x%04x\n",
138 index, rc_tab->scan[index].scancode);
139 rc_tab->len--;
140 memmove(&rc_tab->scan[index], &rc_tab->scan[index+ 1],
141 (rc_tab->len - index) * sizeof(struct ir_scancode));
142 } else {
143 IR_dprintk(1, "#%d: %s scan 0x%04x with key 0x%04x\n",
144 index,
145 old_keycode == KEY_RESERVED ? "New" : "Replacing",
146 rc_tab->scan[index].scancode, new_keycode);
147 rc_tab->scan[index].keycode = new_keycode;
148 __set_bit(new_keycode, dev->keybit);
149 }
150
151 if (old_keycode != KEY_RESERVED) {
152 /* A previous mapping was updated... */
153 __clear_bit(old_keycode, dev->keybit);
154 /* ... but another scancode might use the same keycode */
155 for (i = 0; i < rc_tab->len; i++) {
156 if (rc_tab->scan[i].keycode == old_keycode) {
157 __set_bit(old_keycode, dev->keybit);
158 break;
159 }
160 }
161
162 /* Possibly shrink the keytable, failure is not a problem */
163 ir_resize_table(rc_tab, GFP_ATOMIC);
164 }
165
166 return old_keycode;
167}
168
169/**
170 * ir_locate_scancode() - set a keycode in the scancode->keycode table
171 * @ir_dev: the struct ir_input_dev device descriptor
172 * @rc_tab: scancode table to be searched
173 * @scancode: the desired scancode
174 * @resize: controls whether we allowed to resize the table to
175 * accomodate not yet present scancodes
176 * @return: index of the mapping containing scancode in question
177 * or -1U in case of failure.
178 *
179 * This routine is used to locate given scancode in ir_scancode_table.
180 * If scancode is not yet present the routine will allocate a new slot
181 * for it.
182 */
183static unsigned int ir_establish_scancode(struct ir_input_dev *ir_dev,
184 struct ir_scancode_table *rc_tab,
185 unsigned int scancode,
186 bool resize)
187{
188 unsigned int i;
189
190 /*
191 * Unfortunately, some hardware-based IR decoders don't provide
192 * all bits for the complete IR code. In general, they provide only
193 * the command part of the IR code. Yet, as it is possible to replace
194 * the provided IR with another one, it is needed to allow loading
195 * IR tables from other remotes. So,
196 */
197 if (ir_dev->props && ir_dev->props->scanmask)
198 scancode &= ir_dev->props->scanmask;
199
200 /* First check if we already have a mapping for this ir command */
201 for (i = 0; i < rc_tab->len; i++) {
202 if (rc_tab->scan[i].scancode == scancode)
203 return i;
204
205 /* Keytable is sorted from lowest to highest scancode */
206 if (rc_tab->scan[i].scancode >= scancode)
207 break;
208 }
209
210 /* No previous mapping found, we might need to grow the table */
211 if (rc_tab->size == rc_tab->len) {
212 if (!resize || ir_resize_table(rc_tab, GFP_ATOMIC))
213 return -1U;
214 }
215
216 /* i is the proper index to insert our new keycode */
217 if (i < rc_tab->len)
218 memmove(&rc_tab->scan[i + 1], &rc_tab->scan[i],
219 (rc_tab->len - i) * sizeof(struct ir_scancode));
220 rc_tab->scan[i].scancode = scancode;
221 rc_tab->scan[i].keycode = KEY_RESERVED;
222 rc_tab->len++;
223
224 return i;
225}
226
227/**
228 * ir_setkeycode() - set a keycode in the scancode->keycode table
229 * @dev: the struct input_dev device descriptor
230 * @scancode: the desired scancode
231 * @keycode: result
232 * @return: -EINVAL if the keycode could not be inserted, otherwise zero.
233 *
234 * This routine is used to handle evdev EVIOCSKEY ioctl.
235 */
236static int ir_setkeycode(struct input_dev *dev,
237 const struct input_keymap_entry *ke,
238 unsigned int *old_keycode)
239{
240 struct ir_input_dev *ir_dev = input_get_drvdata(dev);
241 struct ir_scancode_table *rc_tab = &ir_dev->rc_tab;
242 unsigned int index;
243 unsigned int scancode;
244 int retval;
245 unsigned long flags;
246
247 spin_lock_irqsave(&rc_tab->lock, flags);
248
249 if (ke->flags & INPUT_KEYMAP_BY_INDEX) {
250 index = ke->index;
251 if (index >= rc_tab->len) {
252 retval = -EINVAL;
253 goto out;
254 }
255 } else {
256 retval = input_scancode_to_scalar(ke, &scancode);
257 if (retval)
258 goto out;
259
260 index = ir_establish_scancode(ir_dev, rc_tab, scancode, true);
261 if (index >= rc_tab->len) {
262 retval = -ENOMEM;
263 goto out;
264 }
265 }
266
267 *old_keycode = ir_update_mapping(dev, rc_tab, index, ke->keycode);
268
269out:
270 spin_unlock_irqrestore(&rc_tab->lock, flags);
271 return retval;
272}
273
274/**
275 * ir_setkeytable() - sets several entries in the scancode->keycode table
276 * @dev: the struct input_dev device descriptor
277 * @to: the struct ir_scancode_table to copy entries to
278 * @from: the struct ir_scancode_table to copy entries from
279 * @return: -ENOMEM if all keycodes could not be inserted, otherwise zero.
280 *
281 * This routine is used to handle table initialization.
282 */
283static int ir_setkeytable(struct ir_input_dev *ir_dev,
284 const struct ir_scancode_table *from)
285{
286 struct ir_scancode_table *rc_tab = &ir_dev->rc_tab;
287 unsigned int i, index;
288 int rc;
289
290 rc = ir_create_table(&ir_dev->rc_tab,
291 from->name, from->ir_type, from->size);
292 if (rc)
293 return rc;
294
295 IR_dprintk(1, "Allocated space for %u keycode entries (%u bytes)\n",
296 rc_tab->size, rc_tab->alloc);
297
298 for (i = 0; i < from->size; i++) {
299 index = ir_establish_scancode(ir_dev, rc_tab,
300 from->scan[i].scancode, false);
301 if (index >= rc_tab->len) {
302 rc = -ENOMEM;
303 break;
304 }
305
306 ir_update_mapping(ir_dev->input_dev, rc_tab, index,
307 from->scan[i].keycode);
308 }
309
310 if (rc)
311 ir_free_table(rc_tab);
312
313 return rc;
314}
315
316/**
317 * ir_lookup_by_scancode() - locate mapping by scancode
318 * @rc_tab: the &struct ir_scancode_table to search
319 * @scancode: scancode to look for in the table
320 * @return: index in the table, -1U if not found
321 *
322 * This routine performs binary search in RC keykeymap table for
323 * given scancode.
324 */
325static unsigned int ir_lookup_by_scancode(const struct ir_scancode_table *rc_tab,
326 unsigned int scancode)
327{
328 int start = 0;
329 int end = rc_tab->len - 1;
330 int mid;
331
332 while (start <= end) {
333 mid = (start + end) / 2;
334 if (rc_tab->scan[mid].scancode < scancode)
335 start = mid + 1;
336 else if (rc_tab->scan[mid].scancode > scancode)
337 end = mid - 1;
338 else
339 return mid;
340 }
341
342 return -1U;
343}
344
345/**
346 * ir_getkeycode() - get a keycode from the scancode->keycode table
347 * @dev: the struct input_dev device descriptor
348 * @scancode: the desired scancode
349 * @keycode: used to return the keycode, if found, or KEY_RESERVED
350 * @return: always returns zero.
351 *
352 * This routine is used to handle evdev EVIOCGKEY ioctl.
353 */
354static int ir_getkeycode(struct input_dev *dev,
355 struct input_keymap_entry *ke)
356{
357 struct ir_input_dev *ir_dev = input_get_drvdata(dev);
358 struct ir_scancode_table *rc_tab = &ir_dev->rc_tab;
359 struct ir_scancode *entry;
360 unsigned long flags;
361 unsigned int index;
362 unsigned int scancode;
363 int retval;
364
365 spin_lock_irqsave(&rc_tab->lock, flags);
366
367 if (ke->flags & INPUT_KEYMAP_BY_INDEX) {
368 index = ke->index;
369 } else {
370 retval = input_scancode_to_scalar(ke, &scancode);
371 if (retval)
372 goto out;
373
374 index = ir_lookup_by_scancode(rc_tab, scancode);
375 }
376
377 if (index >= rc_tab->len) {
378 if (!(ke->flags & INPUT_KEYMAP_BY_INDEX))
379 IR_dprintk(1, "unknown key for scancode 0x%04x\n",
380 scancode);
381 retval = -EINVAL;
382 goto out;
383 }
384
385 entry = &rc_tab->scan[index];
386
387 ke->index = index;
388 ke->keycode = entry->keycode;
389 ke->len = sizeof(entry->scancode);
390 memcpy(ke->scancode, &entry->scancode, sizeof(entry->scancode));
391
392 retval = 0;
393
394out:
395 spin_unlock_irqrestore(&rc_tab->lock, flags);
396 return retval;
397}
398
399/**
400 * ir_g_keycode_from_table() - gets the keycode that corresponds to a scancode
401 * @input_dev: the struct input_dev descriptor of the device
402 * @scancode: the scancode that we're seeking
403 *
404 * This routine is used by the input routines when a key is pressed at the
405 * IR. The scancode is received and needs to be converted into a keycode.
406 * If the key is not found, it returns KEY_RESERVED. Otherwise, returns the
407 * corresponding keycode from the table.
408 */
409u32 ir_g_keycode_from_table(struct input_dev *dev, u32 scancode)
410{
411 struct ir_input_dev *ir_dev = input_get_drvdata(dev);
412 struct ir_scancode_table *rc_tab = &ir_dev->rc_tab;
413 unsigned int keycode;
414 unsigned int index;
415 unsigned long flags;
416
417 spin_lock_irqsave(&rc_tab->lock, flags);
418
419 index = ir_lookup_by_scancode(rc_tab, scancode);
420 keycode = index < rc_tab->len ?
421 rc_tab->scan[index].keycode : KEY_RESERVED;
422
423 spin_unlock_irqrestore(&rc_tab->lock, flags);
424
425 if (keycode != KEY_RESERVED)
426 IR_dprintk(1, "%s: scancode 0x%04x keycode 0x%02x\n",
427 dev->name, scancode, keycode);
428
429 return keycode;
430}
431EXPORT_SYMBOL_GPL(ir_g_keycode_from_table);
432
433/**
434 * ir_keyup() - generates input event to cleanup a key press
435 * @ir: the struct ir_input_dev descriptor of the device
436 *
437 * This routine is used to signal that a key has been released on the
438 * remote control. It reports a keyup input event via input_report_key().
439 */
440void ir_keyup(struct ir_input_dev *ir)
441{
442 if (!ir->keypressed)
443 return;
444
445 IR_dprintk(1, "keyup key 0x%04x\n", ir->last_keycode);
446 input_report_key(ir->input_dev, ir->last_keycode, 0);
447 input_sync(ir->input_dev);
448 ir->keypressed = false;
449}
450EXPORT_SYMBOL_GPL(ir_keyup);
451
452/**
453 * ir_timer_keyup() - generates a keyup event after a timeout
454 * @cookie: a pointer to struct ir_input_dev passed to setup_timer()
455 *
456 * This routine will generate a keyup event some time after a keydown event
457 * is generated when no further activity has been detected.
458 */
459static void ir_timer_keyup(unsigned long cookie)
460{
461 struct ir_input_dev *ir = (struct ir_input_dev *)cookie;
462 unsigned long flags;
463
464 /*
465 * ir->keyup_jiffies is used to prevent a race condition if a
466 * hardware interrupt occurs at this point and the keyup timer
467 * event is moved further into the future as a result.
468 *
469 * The timer will then be reactivated and this function called
470 * again in the future. We need to exit gracefully in that case
471 * to allow the input subsystem to do its auto-repeat magic or
472 * a keyup event might follow immediately after the keydown.
473 */
474 spin_lock_irqsave(&ir->keylock, flags);
475 if (time_is_before_eq_jiffies(ir->keyup_jiffies))
476 ir_keyup(ir);
477 spin_unlock_irqrestore(&ir->keylock, flags);
478}
479
480/**
481 * ir_repeat() - notifies the IR core that a key is still pressed
482 * @dev: the struct input_dev descriptor of the device
483 *
484 * This routine is used by IR decoders when a repeat message which does
485 * not include the necessary bits to reproduce the scancode has been
486 * received.
487 */
488void ir_repeat(struct input_dev *dev)
489{
490 unsigned long flags;
491 struct ir_input_dev *ir = input_get_drvdata(dev);
492
493 spin_lock_irqsave(&ir->keylock, flags);
494
495 input_event(dev, EV_MSC, MSC_SCAN, ir->last_scancode);
496
497 if (!ir->keypressed)
498 goto out;
499
500 ir->keyup_jiffies = jiffies + msecs_to_jiffies(IR_KEYPRESS_TIMEOUT);
501 mod_timer(&ir->timer_keyup, ir->keyup_jiffies);
502
503out:
504 spin_unlock_irqrestore(&ir->keylock, flags);
505}
506EXPORT_SYMBOL_GPL(ir_repeat);
507
508/**
509 * ir_keydown() - generates input event for a key press
510 * @dev: the struct input_dev descriptor of the device
511 * @scancode: the scancode that we're seeking
512 * @toggle: the toggle value (protocol dependent, if the protocol doesn't
513 * support toggle values, this should be set to zero)
514 *
515 * This routine is used by the input routines when a key is pressed at the
516 * IR. It gets the keycode for a scancode and reports an input event via
517 * input_report_key().
518 */
519void ir_keydown(struct input_dev *dev, int scancode, u8 toggle)
520{
521 unsigned long flags;
522 struct ir_input_dev *ir = input_get_drvdata(dev);
523
524 u32 keycode = ir_g_keycode_from_table(dev, scancode);
525
526 spin_lock_irqsave(&ir->keylock, flags);
527
528 input_event(dev, EV_MSC, MSC_SCAN, scancode);
529
530 /* Repeat event? */
531 if (ir->keypressed &&
532 ir->last_scancode == scancode &&
533 ir->last_toggle == toggle)
534 goto set_timer;
535
536 /* Release old keypress */
537 ir_keyup(ir);
538
539 ir->last_scancode = scancode;
540 ir->last_toggle = toggle;
541 ir->last_keycode = keycode;
542
543
544 if (keycode == KEY_RESERVED)
545 goto out;
546
547
548 /* Register a keypress */
549 ir->keypressed = true;
550 IR_dprintk(1, "%s: key down event, key 0x%04x, scancode 0x%04x\n",
551 dev->name, keycode, scancode);
552 input_report_key(dev, ir->last_keycode, 1);
553 input_sync(dev);
554
555set_timer:
556 ir->keyup_jiffies = jiffies + msecs_to_jiffies(IR_KEYPRESS_TIMEOUT);
557 mod_timer(&ir->timer_keyup, ir->keyup_jiffies);
558out:
559 spin_unlock_irqrestore(&ir->keylock, flags);
560}
561EXPORT_SYMBOL_GPL(ir_keydown);
562
563static int ir_open(struct input_dev *input_dev)
564{
565 struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
566
567 return ir_dev->props->open(ir_dev->props->priv);
568}
569
570static void ir_close(struct input_dev *input_dev)
571{
572 struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
573
574 ir_dev->props->close(ir_dev->props->priv);
575}
576
577/**
578 * __ir_input_register() - sets the IR keycode table and add the handlers
579 * for keymap table get/set
580 * @input_dev: the struct input_dev descriptor of the device
581 * @rc_tab: the struct ir_scancode_table table of scancode/keymap
582 *
583 * This routine is used to initialize the input infrastructure
584 * to work with an IR.
585 * It will register the input/evdev interface for the device and
586 * register the syfs code for IR class
587 */
588int __ir_input_register(struct input_dev *input_dev,
589 const struct ir_scancode_table *rc_tab,
590 struct ir_dev_props *props,
591 const char *driver_name)
592{
593 struct ir_input_dev *ir_dev;
594 int rc;
595
596 if (rc_tab->scan == NULL || !rc_tab->size)
597 return -EINVAL;
598
599 ir_dev = kzalloc(sizeof(*ir_dev), GFP_KERNEL);
600 if (!ir_dev)
601 return -ENOMEM;
602
603 ir_dev->driver_name = kasprintf(GFP_KERNEL, "%s", driver_name);
604 if (!ir_dev->driver_name) {
605 rc = -ENOMEM;
606 goto out_dev;
607 }
608
609 input_dev->getkeycode_new = ir_getkeycode;
610 input_dev->setkeycode_new = ir_setkeycode;
611 input_set_drvdata(input_dev, ir_dev);
612 ir_dev->input_dev = input_dev;
613
614 spin_lock_init(&ir_dev->rc_tab.lock);
615 spin_lock_init(&ir_dev->keylock);
616 setup_timer(&ir_dev->timer_keyup, ir_timer_keyup, (unsigned long)ir_dev);
617
618 if (props) {
619 ir_dev->props = props;
620 if (props->open)
621 input_dev->open = ir_open;
622 if (props->close)
623 input_dev->close = ir_close;
624 }
625
626 set_bit(EV_KEY, input_dev->evbit);
627 set_bit(EV_REP, input_dev->evbit);
628 set_bit(EV_MSC, input_dev->evbit);
629 set_bit(MSC_SCAN, input_dev->mscbit);
630
631 rc = ir_setkeytable(ir_dev, rc_tab);
632 if (rc)
633 goto out_name;
634
635 rc = ir_register_class(input_dev);
636 if (rc < 0)
637 goto out_table;
638
639 if (ir_dev->props)
640 if (ir_dev->props->driver_type == RC_DRIVER_IR_RAW) {
641 rc = ir_raw_event_register(input_dev);
642 if (rc < 0)
643 goto out_event;
644 }
645
646 rc = ir_register_input(input_dev);
647 if (rc < 0)
648 goto out_event;
649
650 IR_dprintk(1, "Registered input device on %s for %s remote%s.\n",
651 driver_name, rc_tab->name,
652 (ir_dev->props && ir_dev->props->driver_type == RC_DRIVER_IR_RAW) ?
653 " in raw mode" : "");
654
655 /*
656 * Default delay of 250ms is too short for some protocols, expecially
657 * since the timeout is currently set to 250ms. Increase it to 500ms,
658 * to avoid wrong repetition of the keycodes.
659 */
660 input_dev->rep[REP_DELAY] = 500;
661
662 return 0;
663
664out_event:
665 ir_unregister_class(input_dev);
666out_table:
667 ir_free_table(&ir_dev->rc_tab);
668out_name:
669 kfree(ir_dev->driver_name);
670out_dev:
671 kfree(ir_dev);
672 return rc;
673}
674EXPORT_SYMBOL_GPL(__ir_input_register);
675
676/**
677 * ir_input_unregister() - unregisters IR and frees resources
678 * @input_dev: the struct input_dev descriptor of the device
679
680 * This routine is used to free memory and de-register interfaces.
681 */
682void ir_input_unregister(struct input_dev *input_dev)
683{
684 struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
685
686 if (!ir_dev)
687 return;
688
689 IR_dprintk(1, "Freed keycode table\n");
690
691 del_timer_sync(&ir_dev->timer_keyup);
692 if (ir_dev->props)
693 if (ir_dev->props->driver_type == RC_DRIVER_IR_RAW)
694 ir_raw_event_unregister(input_dev);
695
696 ir_free_table(&ir_dev->rc_tab);
697
698 ir_unregister_class(input_dev);
699
700 kfree(ir_dev->driver_name);
701 kfree(ir_dev);
702}
703EXPORT_SYMBOL_GPL(ir_input_unregister);
704
705int ir_core_debug; /* ir_debug level (0,1,2) */
706EXPORT_SYMBOL_GPL(ir_core_debug);
707module_param_named(debug, ir_core_debug, int, 0644);
708
709MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@redhat.com>");
710MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-28 00:35:51 -0500