Lines Matching +full:fn +full:- +full:keymap
1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (c) 1999-2002 Vojtech Pavlik
26 #include "input-compat.h"
27 #include "input-core-private.h"
28 #include "input-poller.h"
71 if (value > old_val - fuzz / 2 && value < old_val + fuzz / 2)
74 if (value > old_val - fuzz && value < old_val + fuzz)
77 if (value > old_val - fuzz * 2 && value < old_val + fuzz * 2)
86 if (test_bit(EV_REP, dev->evbit) &&
87 dev->rep[REP_PERIOD] && dev->rep[REP_DELAY] &&
88 dev->timer.function) {
89 dev->repeat_key = code;
90 mod_timer(&dev->timer,
91 jiffies + msecs_to_jiffies(dev->rep[REP_DELAY]));
97 del_timer(&dev->timer);
103 * dev->event_lock held and interrupts disabled.
108 struct input_handler *handler = handle->handler;
112 if (handler->filter) {
114 if (handler->filter(handle, v->type, v->code, v->value))
120 count = end - vals;
126 if (handler->events)
127 handler->events(handle, vals, count);
128 else if (handler->event)
130 handler->event(handle, v->type, v->code, v->value);
138 * dev->event_lock held and interrupts disabled.
146 lockdep_assert_held(&dev->event_lock);
153 handle = rcu_dereference(dev->grab);
157 list_for_each_entry_rcu(handle, &dev->h_list, d_node)
158 if (handle->open) {
168 if (test_bit(EV_REP, dev->evbit) && test_bit(EV_KEY, dev->evbit)) {
170 if (v->type == EV_KEY && v->value != 2) {
171 if (v->value)
172 input_start_autorepeat(dev, v->code);
190 struct input_mt *mt = dev->mt;
199 if (mt && *pval >= 0 && *pval < mt->num_slots)
200 mt->slot = *pval;
208 pold = &dev->absinfo[code].value;
210 pold = &mt->slots[mt->slot].abs[code - ABS_MT_FIRST];
213 * Bypass filtering for multi-touch events when
221 dev->absinfo[code].fuzz);
229 if (is_mt_event && mt && mt->slot != input_abs_get_val(dev, ABS_MT_SLOT)) {
230 input_abs_set_val(dev, ABS_MT_SLOT, mt->slot);
243 /* filter-out events from inhibited devices */
244 if (dev->inhibited)
265 if (is_event_supported(code, dev->keybit, KEY_MAX)) {
267 /* auto-repeat bypasses state updates */
273 if (!!test_bit(code, dev->key) != !!value) {
275 __change_bit(code, dev->key);
282 if (is_event_supported(code, dev->swbit, SW_MAX) &&
283 !!test_bit(code, dev->sw) != !!value) {
285 __change_bit(code, dev->sw);
291 if (is_event_supported(code, dev->absbit, ABS_MAX))
297 if (is_event_supported(code, dev->relbit, REL_MAX) && value)
303 if (is_event_supported(code, dev->mscbit, MSC_MAX))
309 if (is_event_supported(code, dev->ledbit, LED_MAX) &&
310 !!test_bit(code, dev->led) != !!value) {
312 __change_bit(code, dev->led);
318 if (is_event_supported(code, dev->sndbit, SND_MAX)) {
320 if (!!test_bit(code, dev->snd) != !!value)
321 __change_bit(code, dev->snd);
327 if (code <= REP_MAX && value >= 0 && dev->rep[code] != value) {
328 dev->rep[code] = value;
350 if ((disposition & INPUT_PASS_TO_DEVICE) && dev->event)
351 dev->event(dev, type, code, value);
353 if (!dev->vals)
360 v = &dev->vals[dev->num_vals++];
361 v->type = EV_ABS;
362 v->code = ABS_MT_SLOT;
363 v->value = dev->mt->slot;
366 v = &dev->vals[dev->num_vals++];
367 v->type = type;
368 v->code = code;
369 v->value = value;
373 if (dev->num_vals >= 2)
374 input_pass_values(dev, dev->vals, dev->num_vals);
375 dev->num_vals = 0;
382 dev->timestamp[INPUT_CLK_MONO] = ktime_set(0, 0);
383 } else if (dev->num_vals >= dev->max_vals - 2) {
384 dev->vals[dev->num_vals++] = input_value_sync;
385 input_pass_values(dev, dev->vals, dev->num_vals);
386 dev->num_vals = 0;
395 lockdep_assert_held(&dev->event_lock);
407 * input_event() - report new input event
428 if (is_event_supported(type, dev->evbit, EV_MAX)) {
430 spin_lock_irqsave(&dev->event_lock, flags);
432 spin_unlock_irqrestore(&dev->event_lock, flags);
438 * input_inject_event() - send input event from input handler
451 struct input_dev *dev = handle->dev;
455 if (is_event_supported(type, dev->evbit, EV_MAX)) {
456 spin_lock_irqsave(&dev->event_lock, flags);
459 grab = rcu_dereference(dev->grab);
464 spin_unlock_irqrestore(&dev->event_lock, flags);
470 * input_alloc_absinfo - allocates array of input_absinfo structs
478 if (dev->absinfo)
481 dev->absinfo = kcalloc(ABS_CNT, sizeof(*dev->absinfo), GFP_KERNEL);
482 if (!dev->absinfo) {
483 dev_err(dev->dev.parent ?: &dev->dev,
499 __set_bit(EV_ABS, dev->evbit);
500 __set_bit(axis, dev->absbit);
503 if (!dev->absinfo)
506 absinfo = &dev->absinfo[axis];
507 absinfo->minimum = min;
508 absinfo->maximum = max;
509 absinfo->fuzz = fuzz;
510 absinfo->flat = flat;
515 * input_copy_abs - Copy absinfo from one input_dev to another
523 * This is useful to e.g. setup a pen/stylus input-device for combined
531 if (WARN_ON(!(test_bit(EV_ABS, src->evbit) &&
532 test_bit(src_axis, src->absbit))))
540 if (!src->absinfo)
544 if (!dst->absinfo)
547 dst->absinfo[dst_axis] = src->absinfo[src_axis];
552 * input_grab_device - grabs device for exclusive use
561 struct input_dev *dev = handle->dev;
564 retval = mutex_lock_interruptible(&dev->mutex);
568 if (dev->grab) {
569 retval = -EBUSY;
573 rcu_assign_pointer(dev->grab, handle);
576 mutex_unlock(&dev->mutex);
583 struct input_dev *dev = handle->dev;
586 grabber = rcu_dereference_protected(dev->grab,
587 lockdep_is_held(&dev->mutex));
589 rcu_assign_pointer(dev->grab, NULL);
593 list_for_each_entry(handle, &dev->h_list, d_node)
594 if (handle->open && handle->handler->start)
595 handle->handler->start(handle);
600 * input_release_device - release previously grabbed device
610 struct input_dev *dev = handle->dev;
612 mutex_lock(&dev->mutex);
614 mutex_unlock(&dev->mutex);
619 * input_open_device - open input device
627 struct input_dev *dev = handle->dev;
630 retval = mutex_lock_interruptible(&dev->mutex);
634 if (dev->going_away) {
635 retval = -ENODEV;
639 handle->open++;
641 if (dev->users++ || dev->inhibited) {
649 if (dev->open) {
650 retval = dev->open(dev);
652 dev->users--;
653 handle->open--;
663 if (dev->poller)
664 input_dev_poller_start(dev->poller);
667 mutex_unlock(&dev->mutex);
674 struct input_dev *dev = handle->dev;
677 retval = mutex_lock_interruptible(&dev->mutex);
681 if (dev->flush)
682 retval = dev->flush(dev, file);
684 mutex_unlock(&dev->mutex);
690 * input_close_device - close input device
698 struct input_dev *dev = handle->dev;
700 mutex_lock(&dev->mutex);
704 if (!dev->inhibited && !--dev->users) {
705 if (dev->poller)
706 input_dev_poller_stop(dev->poller);
707 if (dev->close)
708 dev->close(dev);
711 if (!--handle->open) {
720 mutex_unlock(&dev->mutex);
726 * The function must be called with dev->event_lock held.
733 lockdep_assert_held(&dev->event_lock);
735 if (is_event_supported(EV_KEY, dev->evbit, EV_MAX)) {
736 for_each_set_bit(code, dev->key, KEY_CNT) {
753 * Mark device as going away. Note that we take dev->mutex here
754 * not to protect access to dev->going_away but rather to ensure
757 mutex_lock(&dev->mutex);
758 dev->going_away = true;
759 mutex_unlock(&dev->mutex);
761 spin_lock_irq(&dev->event_lock);
772 list_for_each_entry(handle, &dev->h_list, d_node)
773 handle->open = 0;
775 spin_unlock_irq(&dev->event_lock);
779 * input_scancode_to_scalar() - converts scancode in &struct input_keymap_entry
780 * @ke: keymap entry containing scancode to be converted.
785 * into scalar form understood by legacy keymap handling methods. These
791 switch (ke->len) {
793 *scancode = *((u8 *)ke->scancode);
797 *scancode = *((u16 *)ke->scancode);
801 *scancode = *((u32 *)ke->scancode);
805 return -EINVAL;
820 switch (dev->keycodesize) {
822 return ((u8 *)dev->keycode)[index];
825 return ((u16 *)dev->keycode)[index];
828 return ((u32 *)dev->keycode)[index];
838 if (!dev->keycodesize)
839 return -EINVAL;
841 if (ke->flags & INPUT_KEYMAP_BY_INDEX)
842 index = ke->index;
849 if (index >= dev->keycodemax)
850 return -EINVAL;
852 ke->keycode = input_fetch_keycode(dev, index);
853 ke->index = index;
854 ke->len = sizeof(index);
855 memcpy(ke->scancode, &index, sizeof(index));
868 if (!dev->keycodesize)
869 return -EINVAL;
871 if (ke->flags & INPUT_KEYMAP_BY_INDEX) {
872 index = ke->index;
879 if (index >= dev->keycodemax)
880 return -EINVAL;
882 if (dev->keycodesize < sizeof(ke->keycode) &&
883 (ke->keycode >> (dev->keycodesize * 8)))
884 return -EINVAL;
886 switch (dev->keycodesize) {
888 u8 *k = (u8 *)dev->keycode;
890 k[index] = ke->keycode;
894 u16 *k = (u16 *)dev->keycode;
896 k[index] = ke->keycode;
900 u32 *k = (u32 *)dev->keycode;
902 k[index] = ke->keycode;
908 __clear_bit(*old_keycode, dev->keybit);
909 for (i = 0; i < dev->keycodemax; i++) {
911 __set_bit(*old_keycode, dev->keybit);
918 __set_bit(ke->keycode, dev->keybit);
923 * input_get_keycode - retrieve keycode currently mapped to a given scancode
924 * @dev: input device which keymap is being queried
925 * @ke: keymap entry
928 * keymap. Presently evdev handlers use it.
935 spin_lock_irqsave(&dev->event_lock, flags);
936 retval = dev->getkeycode(dev, ke);
937 spin_unlock_irqrestore(&dev->event_lock, flags);
944 * input_set_keycode - attribute a keycode to a given scancode
945 * @dev: input device which keymap is being updated
946 * @ke: new keymap entry
949 * keymap. Presently keyboard and evdev handlers use it.
958 if (ke->keycode > KEY_MAX)
959 return -EINVAL;
961 spin_lock_irqsave(&dev->event_lock, flags);
963 retval = dev->setkeycode(dev, ke, &old_keycode);
968 __clear_bit(KEY_RESERVED, dev->keybit);
972 * in the keymap anymore
975 dev_warn(dev->dev.parent ?: &dev->dev,
978 } else if (test_bit(EV_KEY, dev->evbit) &&
979 !is_event_supported(old_keycode, dev->keybit, KEY_MAX) &&
980 __test_and_clear_bit(old_keycode, dev->key)) {
994 spin_unlock_irqrestore(&dev->event_lock, flags);
1003 if (id->flags & INPUT_DEVICE_ID_MATCH_BUS)
1004 if (id->bustype != dev->id.bustype)
1007 if (id->flags & INPUT_DEVICE_ID_MATCH_VENDOR)
1008 if (id->vendor != dev->id.vendor)
1011 if (id->flags & INPUT_DEVICE_ID_MATCH_PRODUCT)
1012 if (id->product != dev->id.product)
1015 if (id->flags & INPUT_DEVICE_ID_MATCH_VERSION)
1016 if (id->version != dev->id.version)
1019 if (!bitmap_subset(id->evbit, dev->evbit, EV_MAX) ||
1020 !bitmap_subset(id->keybit, dev->keybit, KEY_MAX) ||
1021 !bitmap_subset(id->relbit, dev->relbit, REL_MAX) ||
1022 !bitmap_subset(id->absbit, dev->absbit, ABS_MAX) ||
1023 !bitmap_subset(id->mscbit, dev->mscbit, MSC_MAX) ||
1024 !bitmap_subset(id->ledbit, dev->ledbit, LED_MAX) ||
1025 !bitmap_subset(id->sndbit, dev->sndbit, SND_MAX) ||
1026 !bitmap_subset(id->ffbit, dev->ffbit, FF_MAX) ||
1027 !bitmap_subset(id->swbit, dev->swbit, SW_MAX) ||
1028 !bitmap_subset(id->propbit, dev->propbit, INPUT_PROP_MAX)) {
1041 for (id = handler->id_table; id->flags || id->driver_info; id++) {
1043 (!handler->match || handler->match(handler, dev))) {
1058 return -ENODEV;
1060 error = handler->connect(handler, dev, id);
1061 if (error && error != -ENODEV)
1063 handler->name, kobject_name(&dev->dev.kobj), error);
1082 len += snprintf(buf + len, max(buf_size - len, 0),
1118 if (file->f_version != input_devices_state) {
1119 file->f_version = input_devices_state;
1136 union input_seq_state *state = (union input_seq_state *)&seq->private;
1139 /* We need to fit into seq->private pointer */
1140 BUILD_BUG_ON(sizeof(union input_seq_state) != sizeof(seq->private));
1144 state->mutex_acquired = false;
1148 state->mutex_acquired = true;
1160 union input_seq_state *state = (union input_seq_state *)&seq->private;
1162 if (state->mutex_acquired)
1175 for (i = BITS_TO_LONGS(max) - 1; i >= 0; i--) {
1195 const char *path = kobject_get_path(&dev->dev.kobj, GFP_KERNEL);
1199 dev->id.bustype, dev->id.vendor, dev->id.product, dev->id.version);
1201 seq_printf(seq, "N: Name=\"%s\"\n", dev->name ? dev->name : "");
1202 seq_printf(seq, "P: Phys=%s\n", dev->phys ? dev->phys : "");
1204 seq_printf(seq, "U: Uniq=%s\n", dev->uniq ? dev->uniq : "");
1207 list_for_each_entry(handle, &dev->h_list, d_node)
1208 seq_printf(seq, "%s ", handle->name);
1211 input_seq_print_bitmap(seq, "PROP", dev->propbit, INPUT_PROP_MAX);
1213 input_seq_print_bitmap(seq, "EV", dev->evbit, EV_MAX);
1214 if (test_bit(EV_KEY, dev->evbit))
1215 input_seq_print_bitmap(seq, "KEY", dev->keybit, KEY_MAX);
1216 if (test_bit(EV_REL, dev->evbit))
1217 input_seq_print_bitmap(seq, "REL", dev->relbit, REL_MAX);
1218 if (test_bit(EV_ABS, dev->evbit))
1219 input_seq_print_bitmap(seq, "ABS", dev->absbit, ABS_MAX);
1220 if (test_bit(EV_MSC, dev->evbit))
1221 input_seq_print_bitmap(seq, "MSC", dev->mscbit, MSC_MAX);
1222 if (test_bit(EV_LED, dev->evbit))
1223 input_seq_print_bitmap(seq, "LED", dev->ledbit, LED_MAX);
1224 if (test_bit(EV_SND, dev->evbit))
1225 input_seq_print_bitmap(seq, "SND", dev->sndbit, SND_MAX);
1226 if (test_bit(EV_FF, dev->evbit))
1227 input_seq_print_bitmap(seq, "FF", dev->ffbit, FF_MAX);
1228 if (test_bit(EV_SW, dev->evbit))
1229 input_seq_print_bitmap(seq, "SW", dev->swbit, SW_MAX);
1259 union input_seq_state *state = (union input_seq_state *)&seq->private;
1262 /* We need to fit into seq->private pointer */
1263 BUILD_BUG_ON(sizeof(union input_seq_state) != sizeof(seq->private));
1267 state->mutex_acquired = false;
1271 state->mutex_acquired = true;
1272 state->pos = *pos;
1279 union input_seq_state *state = (union input_seq_state *)&seq->private;
1281 state->pos = *pos + 1;
1288 union input_seq_state *state = (union input_seq_state *)&seq->private;
1290 seq_printf(seq, "N: Number=%u Name=%s", state->pos, handler->name);
1291 if (handler->filter)
1293 if (handler->legacy_minors)
1294 seq_printf(seq, " Minor=%d", handler->minor);
1325 return -ENOMEM;
1341 return -ENOMEM;
1365 input_dev->name ? input_dev->name : ""); \
1382 len += snprintf(buf + len, max(size - len, 0), "%X,", i);
1392 "input:b%04Xv%04Xp%04Xe%04X-",
1393 id->id.bustype, id->id.vendor,
1394 id->id.product, id->id.version);
1396 len += input_print_modalias_bits(buf + len, size - len,
1397 'e', id->evbit, 0, EV_MAX);
1398 len += input_print_modalias_bits(buf + len, size - len,
1399 'k', id->keybit, KEY_MIN_INTERESTING, KEY_MAX);
1400 len += input_print_modalias_bits(buf + len, size - len,
1401 'r', id->relbit, 0, REL_MAX);
1402 len += input_print_modalias_bits(buf + len, size - len,
1403 'a', id->absbit, 0, ABS_MAX);
1404 len += input_print_modalias_bits(buf + len, size - len,
1405 'm', id->mscbit, 0, MSC_MAX);
1406 len += input_print_modalias_bits(buf + len, size - len,
1407 'l', id->ledbit, 0, LED_MAX);
1408 len += input_print_modalias_bits(buf + len, size - len,
1409 's', id->sndbit, 0, SND_MAX);
1410 len += input_print_modalias_bits(buf + len, size - len,
1411 'f', id->ffbit, 0, FF_MAX);
1412 len += input_print_modalias_bits(buf + len, size - len,
1413 'w', id->swbit, 0, SW_MAX);
1416 len += snprintf(buf + len, max(size - len, 0), "\n");
1442 int len = input_print_bitmap(buf, PAGE_SIZE, input_dev->propbit,
1457 return scnprintf(buf, PAGE_SIZE, "%d\n", input_dev->inhibited);
1469 return -EINVAL;
1504 return scnprintf(buf, PAGE_SIZE, "%04x\n", input_dev->id.name); \
1533 for (i = BITS_TO_LONGS(max) - 1; i >= 0; i--) {
1534 len += input_bits_to_string(buf + len, max(buf_size - len, 0),
1539 len += snprintf(buf + len, max(buf_size - len, 0), " ");
1550 len += snprintf(buf + len, max(buf_size - len, 0), "\n");
1562 input_dev->bm##bit, ev##_MAX, \
1610 kfree(dev->poller);
1611 kfree(dev->absinfo);
1612 kfree(dev->vals);
1619 * Input uevent interface - loading event handlers based on
1628 return -ENOMEM;
1630 len = input_print_bitmap(&env->buf[env->buflen - 1],
1631 sizeof(env->buf) - env->buflen,
1633 if (len >= (sizeof(env->buf) - env->buflen))
1634 return -ENOMEM;
1636 env->buflen += len;
1646 return -ENOMEM;
1648 len = input_print_modalias(&env->buf[env->buflen - 1],
1649 sizeof(env->buf) - env->buflen,
1651 if (len >= (sizeof(env->buf) - env->buflen))
1652 return -ENOMEM;
1654 env->buflen += len;
1684 dev->id.bustype, dev->id.vendor,
1685 dev->id.product, dev->id.version);
1686 if (dev->name)
1687 INPUT_ADD_HOTPLUG_VAR("NAME=\"%s\"", dev->name);
1688 if (dev->phys)
1689 INPUT_ADD_HOTPLUG_VAR("PHYS=\"%s\"", dev->phys);
1690 if (dev->uniq)
1691 INPUT_ADD_HOTPLUG_VAR("UNIQ=\"%s\"", dev->uniq);
1693 INPUT_ADD_HOTPLUG_BM_VAR("PROP=", dev->propbit, INPUT_PROP_MAX);
1695 INPUT_ADD_HOTPLUG_BM_VAR("EV=", dev->evbit, EV_MAX);
1696 if (test_bit(EV_KEY, dev->evbit))
1697 INPUT_ADD_HOTPLUG_BM_VAR("KEY=", dev->keybit, KEY_MAX);
1698 if (test_bit(EV_REL, dev->evbit))
1699 INPUT_ADD_HOTPLUG_BM_VAR("REL=", dev->relbit, REL_MAX);
1700 if (test_bit(EV_ABS, dev->evbit))
1701 INPUT_ADD_HOTPLUG_BM_VAR("ABS=", dev->absbit, ABS_MAX);
1702 if (test_bit(EV_MSC, dev->evbit))
1703 INPUT_ADD_HOTPLUG_BM_VAR("MSC=", dev->mscbit, MSC_MAX);
1704 if (test_bit(EV_LED, dev->evbit))
1705 INPUT_ADD_HOTPLUG_BM_VAR("LED=", dev->ledbit, LED_MAX);
1706 if (test_bit(EV_SND, dev->evbit))
1707 INPUT_ADD_HOTPLUG_BM_VAR("SND=", dev->sndbit, SND_MAX);
1708 if (test_bit(EV_FF, dev->evbit))
1709 INPUT_ADD_HOTPLUG_BM_VAR("FF=", dev->ffbit, FF_MAX);
1710 if (test_bit(EV_SW, dev->evbit))
1711 INPUT_ADD_HOTPLUG_BM_VAR("SW=", dev->swbit, SW_MAX);
1723 if (!test_bit(EV_##type, dev->evbit)) \
1726 for_each_set_bit(i, dev->bits##bit, type##_CNT) { \
1727 active = test_bit(i, dev->bits); \
1731 dev->event(dev, EV_##type, i, on ? active : 0); \
1737 if (!dev->event)
1743 if (activate && test_bit(EV_REP, dev->evbit)) {
1744 dev->event(dev, EV_REP, REP_PERIOD, dev->rep[REP_PERIOD]);
1745 dev->event(dev, EV_REP, REP_DELAY, dev->rep[REP_DELAY]);
1750 * input_reset_device() - reset/restore the state of input device
1761 mutex_lock(&dev->mutex);
1762 spin_lock_irqsave(&dev->event_lock, flags);
1768 spin_unlock_irqrestore(&dev->event_lock, flags);
1769 mutex_unlock(&dev->mutex);
1775 mutex_lock(&dev->mutex);
1777 if (dev->inhibited)
1780 if (dev->users) {
1781 if (dev->close)
1782 dev->close(dev);
1783 if (dev->poller)
1784 input_dev_poller_stop(dev->poller);
1787 spin_lock_irq(&dev->event_lock);
1792 spin_unlock_irq(&dev->event_lock);
1794 dev->inhibited = true;
1797 mutex_unlock(&dev->mutex);
1805 mutex_lock(&dev->mutex);
1807 if (!dev->inhibited)
1810 if (dev->users) {
1811 if (dev->open) {
1812 ret = dev->open(dev);
1816 if (dev->poller)
1817 input_dev_poller_start(dev->poller);
1820 dev->inhibited = false;
1821 spin_lock_irq(&dev->event_lock);
1823 spin_unlock_irq(&dev->event_lock);
1826 mutex_unlock(&dev->mutex);
1835 spin_lock_irq(&input_dev->event_lock);
1847 spin_unlock_irq(&input_dev->event_lock);
1856 spin_lock_irq(&input_dev->event_lock);
1861 spin_unlock_irq(&input_dev->event_lock);
1870 spin_lock_irq(&input_dev->event_lock);
1879 spin_unlock_irq(&input_dev->event_lock);
1888 spin_lock_irq(&input_dev->event_lock);
1893 spin_unlock_irq(&input_dev->event_lock);
1928 * input_allocate_device - allocate memory for new input device
1938 static atomic_t input_no = ATOMIC_INIT(-1);
1943 dev->dev.type = &input_dev_type;
1944 dev->dev.class = &input_class;
1945 device_initialize(&dev->dev);
1946 mutex_init(&dev->mutex);
1947 spin_lock_init(&dev->event_lock);
1948 timer_setup(&dev->timer, NULL, 0);
1949 INIT_LIST_HEAD(&dev->h_list);
1950 INIT_LIST_HEAD(&dev->node);
1952 dev_set_name(&dev->dev, "input%lu",
1970 return devres->input == data;
1976 struct input_dev *input = devres->input;
1979 __func__, dev_name(&input->dev));
1984 * devm_input_allocate_device - allocate managed input device
2017 input->dev.parent = dev;
2018 input->devres_managed = true;
2020 devres->input = input;
2028 * input_free_device - free memory occupied by input_dev structure
2044 if (dev->devres_managed)
2045 WARN_ON(devres_destroy(dev->dev.parent,
2055 * input_set_timestamp - set timestamp for input events
2070 dev->timestamp[INPUT_CLK_MONO] = timestamp;
2071 dev->timestamp[INPUT_CLK_REAL] = ktime_mono_to_real(timestamp);
2072 dev->timestamp[INPUT_CLK_BOOT] = ktime_mono_to_any(timestamp,
2078 * input_get_timestamp - get timestamp for input events
2081 * A valid timestamp is a timestamp of non-zero value.
2087 if (!ktime_compare(dev->timestamp[INPUT_CLK_MONO], invalid_timestamp))
2090 return dev->timestamp;
2095 * input_set_capability - mark device as capable of a certain event
2101 * bitmap the function also adjusts dev->evbit.
2115 __set_bit(code, dev->keybit);
2119 __set_bit(code, dev->relbit);
2124 __set_bit(code, dev->absbit);
2128 __set_bit(code, dev->mscbit);
2132 __set_bit(code, dev->swbit);
2136 __set_bit(code, dev->ledbit);
2140 __set_bit(code, dev->sndbit);
2144 __set_bit(code, dev->ffbit);
2157 __set_bit(type, dev->evbit);
2167 if (dev->mt) {
2168 mt_slots = dev->mt->num_slots;
2169 } else if (test_bit(ABS_MT_TRACKING_ID, dev->absbit)) {
2170 mt_slots = dev->absinfo[ABS_MT_TRACKING_ID].maximum -
2171 dev->absinfo[ABS_MT_TRACKING_ID].minimum + 1,
2173 } else if (test_bit(ABS_MT_POSITION_X, dev->absbit)) {
2181 if (test_bit(EV_ABS, dev->evbit))
2182 for_each_set_bit(i, dev->absbit, ABS_CNT)
2185 if (test_bit(EV_REL, dev->evbit))
2186 events += bitmap_weight(dev->relbit, REL_CNT);
2196 if (!test_bit(EV_##type, dev->evbit)) \
2197 memset(dev->bits##bit, 0, \
2198 sizeof(dev->bits##bit)); \
2221 list_for_each_entry_safe(handle, next, &dev->h_list, d_node)
2222 handle->handler->disconnect(handle);
2223 WARN_ON(!list_empty(&dev->h_list));
2225 del_timer_sync(&dev->timer);
2226 list_del_init(&dev->node);
2232 device_del(&dev->dev);
2238 struct input_dev *input = devres->input;
2241 __func__, dev_name(&input->dev));
2247 * dev->event_lock here to avoid racing with input_event
2255 spin_lock_irqsave(&dev->event_lock, flags);
2257 if (!dev->inhibited &&
2258 test_bit(dev->repeat_key, dev->key) &&
2259 is_event_supported(dev->repeat_key, dev->keybit, KEY_MAX)) {
2262 input_handle_event(dev, EV_KEY, dev->repeat_key, 2);
2265 if (dev->rep[REP_PERIOD])
2266 mod_timer(&dev->timer, jiffies +
2267 msecs_to_jiffies(dev->rep[REP_PERIOD]));
2270 spin_unlock_irqrestore(&dev->event_lock, flags);
2274 * input_enable_softrepeat - enable software autorepeat
2283 dev->timer.function = input_repeat_key;
2284 dev->rep[REP_DELAY] = delay;
2285 dev->rep[REP_PERIOD] = period;
2291 lockdep_assert_held(&dev->mutex);
2293 return !dev->inhibited && dev->users > 0;
2298 * input_register_device - register device with input core
2313 * that tear down of managed input devices is internally a 2-step process:
2328 if (test_bit(EV_ABS, dev->evbit) && !dev->absinfo) {
2329 dev_err(&dev->dev,
2330 "Absolute device without dev->absinfo, refusing to register\n");
2331 return -EINVAL;
2334 if (dev->devres_managed) {
2338 return -ENOMEM;
2340 devres->input = dev;
2344 __set_bit(EV_SYN, dev->evbit);
2347 __clear_bit(KEY_RESERVED, dev->keybit);
2349 /* Make sure that bitmasks not mentioned in dev->evbit are clean. */
2353 if (dev->hint_events_per_packet < packet_size)
2354 dev->hint_events_per_packet = packet_size;
2356 dev->max_vals = dev->hint_events_per_packet + 2;
2357 dev->vals = kcalloc(dev->max_vals, sizeof(*dev->vals), GFP_KERNEL);
2358 if (!dev->vals) {
2359 error = -ENOMEM;
2364 * If delay and period are pre-set by the driver, then autorepeating
2367 if (!dev->rep[REP_DELAY] && !dev->rep[REP_PERIOD])
2370 if (!dev->getkeycode)
2371 dev->getkeycode = input_default_getkeycode;
2373 if (!dev->setkeycode)
2374 dev->setkeycode = input_default_setkeycode;
2376 if (dev->poller)
2377 input_dev_poller_finalize(dev->poller);
2379 error = device_add(&dev->dev);
2383 path = kobject_get_path(&dev->dev.kobj, GFP_KERNEL);
2385 dev->name ? dev->name : "Unspecified device",
2393 list_add_tail(&dev->node, &input_dev_list);
2402 if (dev->devres_managed) {
2403 dev_dbg(dev->dev.parent, "%s: registering %s with devres.\n",
2404 __func__, dev_name(&dev->dev));
2405 devres_add(dev->dev.parent, devres);
2410 device_del(&dev->dev);
2412 kfree(dev->vals);
2413 dev->vals = NULL;
2421 * input_unregister_device - unregister previously registered device
2429 if (dev->devres_managed) {
2430 WARN_ON(devres_destroy(dev->dev.parent,
2447 * input_register_handler - register a new input handler
2463 INIT_LIST_HEAD(&handler->h_list);
2465 list_add_tail(&handler->node, &input_handler_list);
2478 * input_unregister_handler - unregisters an input handler
2490 list_for_each_entry_safe(handle, next, &handler->h_list, h_node)
2491 handler->disconnect(handle);
2492 WARN_ON(!list_empty(&handler->h_list));
2494 list_del_init(&handler->node);
2503 * input_handler_for_each_handle - handle iterator
2506 * @fn: function to be called for each handle
2508 * Iterate over @bus's list of devices, and call @fn for each, passing
2509 * it @data and stop when @fn returns a non-zero value. The function is
2511 * contexts. The @fn callback is invoked from RCU critical section and
2515 int (*fn)(struct input_handle *, void *))
2522 list_for_each_entry_rcu(handle, &handler->h_list, h_node) {
2523 retval = fn(handle, data);
2535 * input_register_handle - register a new input handle
2547 struct input_handler *handler = handle->handler;
2548 struct input_dev *dev = handle->dev;
2552 * We take dev->mutex here to prevent race with
2555 error = mutex_lock_interruptible(&dev->mutex);
2563 if (handler->filter)
2564 list_add_rcu(&handle->d_node, &dev->h_list);
2566 list_add_tail_rcu(&handle->d_node, &dev->h_list);
2568 mutex_unlock(&dev->mutex);
2571 * Since we are supposed to be called from ->connect()
2572 * which is mutually exclusive with ->disconnect()
2576 list_add_tail_rcu(&handle->h_node, &handler->h_list);
2578 if (handler->start)
2579 handler->start(handle);
2586 * input_unregister_handle - unregister an input handle
2597 struct input_dev *dev = handle->dev;
2599 list_del_rcu(&handle->h_node);
2602 * Take dev->mutex to prevent race with input_release_device().
2604 mutex_lock(&dev->mutex);
2605 list_del_rcu(&handle->d_node);
2606 mutex_unlock(&dev->mutex);
2613 * input_get_new_minor - allocates a new input minor number
2627 * This function should be called from input handler's ->connect()
2647 * input_free_minor - release previously allocated minor