Lines Matching +full:abs +full:- +full:flat
1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (c) 1999-2002 Vojtech Pavlik
26 #include "input-compat.h"
27 #include "input-poller.h"
59 if (value > old_val - fuzz / 2 && value < old_val + fuzz / 2)
62 if (value > old_val - fuzz && value < old_val + fuzz)
65 if (value > old_val - fuzz * 2 && value < old_val + fuzz * 2)
74 if (test_bit(EV_REP, dev->evbit) &&
75 dev->rep[REP_PERIOD] && dev->rep[REP_DELAY] &&
76 dev->timer.function) {
77 dev->repeat_key = code;
78 mod_timer(&dev->timer,
79 jiffies + msecs_to_jiffies(dev->rep[REP_DELAY]));
85 del_timer(&dev->timer);
91 * dev->event_lock held and interrupts disabled.
96 struct input_handler *handler = handle->handler;
100 if (handler->filter) {
102 if (handler->filter(handle, v->type, v->code, v->value))
108 count = end - vals;
114 if (handler->events)
115 handler->events(handle, vals, count);
116 else if (handler->event)
118 handler->event(handle, v->type, v->code, v->value);
126 * dev->event_lock held and interrupts disabled.
139 handle = rcu_dereference(dev->grab);
143 list_for_each_entry_rcu(handle, &dev->h_list, d_node)
144 if (handle->open) {
154 if (test_bit(EV_REP, dev->evbit) && test_bit(EV_KEY, dev->evbit)) {
156 if (v->type == EV_KEY && v->value != 2) {
157 if (v->value)
158 input_start_autorepeat(dev, v->code);
176 * dev->event_lock here to avoid racing with input_event
184 spin_lock_irqsave(&dev->event_lock, flags);
186 if (test_bit(dev->repeat_key, dev->key) &&
187 is_event_supported(dev->repeat_key, dev->keybit, KEY_MAX)) {
189 { EV_KEY, dev->repeat_key, 2 },
196 if (dev->rep[REP_PERIOD])
197 mod_timer(&dev->timer, jiffies +
198 msecs_to_jiffies(dev->rep[REP_PERIOD]));
201 spin_unlock_irqrestore(&dev->event_lock, flags);
214 struct input_mt *mt = dev->mt;
223 if (mt && *pval >= 0 && *pval < mt->num_slots)
224 mt->slot = *pval;
232 pold = &dev->absinfo[code].value;
234 pold = &mt->slots[mt->slot].abs[code - ABS_MT_FIRST];
237 * Bypass filtering for multi-touch events when
245 dev->absinfo[code].fuzz);
253 if (is_mt_event && mt && mt->slot != input_abs_get_val(dev, ABS_MT_SLOT)) {
254 input_abs_set_val(dev, ABS_MT_SLOT, mt->slot);
285 if (is_event_supported(code, dev->keybit, KEY_MAX)) {
287 /* auto-repeat bypasses state updates */
293 if (!!test_bit(code, dev->key) != !!value) {
295 __change_bit(code, dev->key);
302 if (is_event_supported(code, dev->swbit, SW_MAX) &&
303 !!test_bit(code, dev->sw) != !!value) {
305 __change_bit(code, dev->sw);
311 if (is_event_supported(code, dev->absbit, ABS_MAX))
317 if (is_event_supported(code, dev->relbit, REL_MAX) && value)
323 if (is_event_supported(code, dev->mscbit, MSC_MAX))
329 if (is_event_supported(code, dev->ledbit, LED_MAX) &&
330 !!test_bit(code, dev->led) != !!value) {
332 __change_bit(code, dev->led);
338 if (is_event_supported(code, dev->sndbit, SND_MAX)) {
340 if (!!test_bit(code, dev->snd) != !!value)
341 __change_bit(code, dev->snd);
347 if (code <= REP_MAX && value >= 0 && dev->rep[code] != value) {
348 dev->rep[code] = value;
372 /* filter-out events from inhibited devices */
373 if (dev->inhibited)
380 if ((disposition & INPUT_PASS_TO_DEVICE) && dev->event)
381 dev->event(dev, type, code, value);
383 if (!dev->vals)
390 v = &dev->vals[dev->num_vals++];
391 v->type = EV_ABS;
392 v->code = ABS_MT_SLOT;
393 v->value = dev->mt->slot;
396 v = &dev->vals[dev->num_vals++];
397 v->type = type;
398 v->code = code;
399 v->value = value;
403 if (dev->num_vals >= 2)
404 input_pass_values(dev, dev->vals, dev->num_vals);
405 dev->num_vals = 0;
412 dev->timestamp[INPUT_CLK_MONO] = ktime_set(0, 0);
413 } else if (dev->num_vals >= dev->max_vals - 2) {
414 dev->vals[dev->num_vals++] = input_value_sync;
415 input_pass_values(dev, dev->vals, dev->num_vals);
416 dev->num_vals = 0;
422 * input_event() - report new input event
443 if (is_event_supported(type, dev->evbit, EV_MAX)) {
445 spin_lock_irqsave(&dev->event_lock, flags);
447 spin_unlock_irqrestore(&dev->event_lock, flags);
453 * input_inject_event() - send input event from input handler
466 struct input_dev *dev = handle->dev;
470 if (is_event_supported(type, dev->evbit, EV_MAX)) {
471 spin_lock_irqsave(&dev->event_lock, flags);
474 grab = rcu_dereference(dev->grab);
479 spin_unlock_irqrestore(&dev->event_lock, flags);
485 * input_alloc_absinfo - allocates array of input_absinfo structs
493 if (dev->absinfo)
496 dev->absinfo = kcalloc(ABS_CNT, sizeof(*dev->absinfo), GFP_KERNEL);
497 if (!dev->absinfo) {
498 dev_err(dev->dev.parent ?: &dev->dev,
503 * device with ABS bits but without absinfo.
510 int min, int max, int fuzz, int flat)
515 if (!dev->absinfo)
518 absinfo = &dev->absinfo[axis];
519 absinfo->minimum = min;
520 absinfo->maximum = max;
521 absinfo->fuzz = fuzz;
522 absinfo->flat = flat;
524 __set_bit(EV_ABS, dev->evbit);
525 __set_bit(axis, dev->absbit);
531 * input_grab_device - grabs device for exclusive use
540 struct input_dev *dev = handle->dev;
543 retval = mutex_lock_interruptible(&dev->mutex);
547 if (dev->grab) {
548 retval = -EBUSY;
552 rcu_assign_pointer(dev->grab, handle);
555 mutex_unlock(&dev->mutex);
562 struct input_dev *dev = handle->dev;
565 grabber = rcu_dereference_protected(dev->grab,
566 lockdep_is_held(&dev->mutex));
568 rcu_assign_pointer(dev->grab, NULL);
572 list_for_each_entry(handle, &dev->h_list, d_node)
573 if (handle->open && handle->handler->start)
574 handle->handler->start(handle);
579 * input_release_device - release previously grabbed device
589 struct input_dev *dev = handle->dev;
591 mutex_lock(&dev->mutex);
593 mutex_unlock(&dev->mutex);
598 * input_open_device - open input device
606 struct input_dev *dev = handle->dev;
609 retval = mutex_lock_interruptible(&dev->mutex);
613 if (dev->going_away) {
614 retval = -ENODEV;
618 handle->open++;
620 if (dev->users++ || dev->inhibited) {
628 if (dev->open) {
629 retval = dev->open(dev);
631 dev->users--;
632 handle->open--;
642 if (dev->poller)
643 input_dev_poller_start(dev->poller);
646 mutex_unlock(&dev->mutex);
653 struct input_dev *dev = handle->dev;
656 retval = mutex_lock_interruptible(&dev->mutex);
660 if (dev->flush)
661 retval = dev->flush(dev, file);
663 mutex_unlock(&dev->mutex);
669 * input_close_device - close input device
677 struct input_dev *dev = handle->dev;
679 mutex_lock(&dev->mutex);
683 if (!dev->inhibited && !--dev->users) {
684 if (dev->poller)
685 input_dev_poller_stop(dev->poller);
686 if (dev->close)
687 dev->close(dev);
690 if (!--handle->open) {
699 mutex_unlock(&dev->mutex);
705 * The function must be called with dev->event_lock held.
712 if (is_event_supported(EV_KEY, dev->evbit, EV_MAX)) {
713 for_each_set_bit(code, dev->key, KEY_CNT) {
721 memset(dev->key, 0, sizeof(dev->key));
733 * Mark device as going away. Note that we take dev->mutex here
734 * not to protect access to dev->going_away but rather to ensure
737 mutex_lock(&dev->mutex);
738 dev->going_away = true;
739 mutex_unlock(&dev->mutex);
741 spin_lock_irq(&dev->event_lock);
751 list_for_each_entry(handle, &dev->h_list, d_node)
752 handle->open = 0;
754 spin_unlock_irq(&dev->event_lock);
758 * input_scancode_to_scalar() - converts scancode in &struct input_keymap_entry
770 switch (ke->len) {
772 *scancode = *((u8 *)ke->scancode);
776 *scancode = *((u16 *)ke->scancode);
780 *scancode = *((u32 *)ke->scancode);
784 return -EINVAL;
799 switch (dev->keycodesize) {
801 return ((u8 *)dev->keycode)[index];
804 return ((u16 *)dev->keycode)[index];
807 return ((u32 *)dev->keycode)[index];
817 if (!dev->keycodesize)
818 return -EINVAL;
820 if (ke->flags & INPUT_KEYMAP_BY_INDEX)
821 index = ke->index;
828 if (index >= dev->keycodemax)
829 return -EINVAL;
831 ke->keycode = input_fetch_keycode(dev, index);
832 ke->index = index;
833 ke->len = sizeof(index);
834 memcpy(ke->scancode, &index, sizeof(index));
847 if (!dev->keycodesize)
848 return -EINVAL;
850 if (ke->flags & INPUT_KEYMAP_BY_INDEX) {
851 index = ke->index;
858 if (index >= dev->keycodemax)
859 return -EINVAL;
861 if (dev->keycodesize < sizeof(ke->keycode) &&
862 (ke->keycode >> (dev->keycodesize * 8)))
863 return -EINVAL;
865 switch (dev->keycodesize) {
867 u8 *k = (u8 *)dev->keycode;
869 k[index] = ke->keycode;
873 u16 *k = (u16 *)dev->keycode;
875 k[index] = ke->keycode;
879 u32 *k = (u32 *)dev->keycode;
881 k[index] = ke->keycode;
887 __clear_bit(*old_keycode, dev->keybit);
888 for (i = 0; i < dev->keycodemax; i++) {
890 __set_bit(*old_keycode, dev->keybit);
897 __set_bit(ke->keycode, dev->keybit);
902 * input_get_keycode - retrieve keycode currently mapped to a given scancode
914 spin_lock_irqsave(&dev->event_lock, flags);
915 retval = dev->getkeycode(dev, ke);
916 spin_unlock_irqrestore(&dev->event_lock, flags);
923 * input_set_keycode - attribute a keycode to a given scancode
937 if (ke->keycode > KEY_MAX)
938 return -EINVAL;
940 spin_lock_irqsave(&dev->event_lock, flags);
942 retval = dev->setkeycode(dev, ke, &old_keycode);
947 __clear_bit(KEY_RESERVED, dev->keybit);
954 dev_warn(dev->dev.parent ?: &dev->dev,
957 } else if (test_bit(EV_KEY, dev->evbit) &&
958 !is_event_supported(old_keycode, dev->keybit, KEY_MAX) &&
959 __test_and_clear_bit(old_keycode, dev->key)) {
969 spin_unlock_irqrestore(&dev->event_lock, flags);
978 if (id->flags & INPUT_DEVICE_ID_MATCH_BUS)
979 if (id->bustype != dev->id.bustype)
982 if (id->flags & INPUT_DEVICE_ID_MATCH_VENDOR)
983 if (id->vendor != dev->id.vendor)
986 if (id->flags & INPUT_DEVICE_ID_MATCH_PRODUCT)
987 if (id->product != dev->id.product)
990 if (id->flags & INPUT_DEVICE_ID_MATCH_VERSION)
991 if (id->version != dev->id.version)
994 if (!bitmap_subset(id->evbit, dev->evbit, EV_MAX) ||
995 !bitmap_subset(id->keybit, dev->keybit, KEY_MAX) ||
996 !bitmap_subset(id->relbit, dev->relbit, REL_MAX) ||
997 !bitmap_subset(id->absbit, dev->absbit, ABS_MAX) ||
998 !bitmap_subset(id->mscbit, dev->mscbit, MSC_MAX) ||
999 !bitmap_subset(id->ledbit, dev->ledbit, LED_MAX) ||
1000 !bitmap_subset(id->sndbit, dev->sndbit, SND_MAX) ||
1001 !bitmap_subset(id->ffbit, dev->ffbit, FF_MAX) ||
1002 !bitmap_subset(id->swbit, dev->swbit, SW_MAX) ||
1003 !bitmap_subset(id->propbit, dev->propbit, INPUT_PROP_MAX)) {
1016 for (id = handler->id_table; id->flags || id->driver_info; id++) {
1018 (!handler->match || handler->match(handler, dev))) {
1033 return -ENODEV;
1035 error = handler->connect(handler, dev, id);
1036 if (error && error != -ENODEV)
1038 handler->name, kobject_name(&dev->dev.kobj), error);
1057 len += snprintf(buf + len, max(buf_size - len, 0),
1093 if (file->f_version != input_devices_state) {
1094 file->f_version = input_devices_state;
1111 union input_seq_state *state = (union input_seq_state *)&seq->private;
1114 /* We need to fit into seq->private pointer */
1115 BUILD_BUG_ON(sizeof(union input_seq_state) != sizeof(seq->private));
1119 state->mutex_acquired = false;
1123 state->mutex_acquired = true;
1135 union input_seq_state *state = (union input_seq_state *)&seq->private;
1137 if (state->mutex_acquired)
1150 for (i = BITS_TO_LONGS(max) - 1; i >= 0; i--) {
1170 const char *path = kobject_get_path(&dev->dev.kobj, GFP_KERNEL);
1174 dev->id.bustype, dev->id.vendor, dev->id.product, dev->id.version);
1176 seq_printf(seq, "N: Name=\"%s\"\n", dev->name ? dev->name : "");
1177 seq_printf(seq, "P: Phys=%s\n", dev->phys ? dev->phys : "");
1179 seq_printf(seq, "U: Uniq=%s\n", dev->uniq ? dev->uniq : "");
1182 list_for_each_entry(handle, &dev->h_list, d_node)
1183 seq_printf(seq, "%s ", handle->name);
1186 input_seq_print_bitmap(seq, "PROP", dev->propbit, INPUT_PROP_MAX);
1188 input_seq_print_bitmap(seq, "EV", dev->evbit, EV_MAX);
1189 if (test_bit(EV_KEY, dev->evbit))
1190 input_seq_print_bitmap(seq, "KEY", dev->keybit, KEY_MAX);
1191 if (test_bit(EV_REL, dev->evbit))
1192 input_seq_print_bitmap(seq, "REL", dev->relbit, REL_MAX);
1193 if (test_bit(EV_ABS, dev->evbit))
1194 input_seq_print_bitmap(seq, "ABS", dev->absbit, ABS_MAX);
1195 if (test_bit(EV_MSC, dev->evbit))
1196 input_seq_print_bitmap(seq, "MSC", dev->mscbit, MSC_MAX);
1197 if (test_bit(EV_LED, dev->evbit))
1198 input_seq_print_bitmap(seq, "LED", dev->ledbit, LED_MAX);
1199 if (test_bit(EV_SND, dev->evbit))
1200 input_seq_print_bitmap(seq, "SND", dev->sndbit, SND_MAX);
1201 if (test_bit(EV_FF, dev->evbit))
1202 input_seq_print_bitmap(seq, "FF", dev->ffbit, FF_MAX);
1203 if (test_bit(EV_SW, dev->evbit))
1204 input_seq_print_bitmap(seq, "SW", dev->swbit, SW_MAX);
1234 union input_seq_state *state = (union input_seq_state *)&seq->private;
1237 /* We need to fit into seq->private pointer */
1238 BUILD_BUG_ON(sizeof(union input_seq_state) != sizeof(seq->private));
1242 state->mutex_acquired = false;
1246 state->mutex_acquired = true;
1247 state->pos = *pos;
1254 union input_seq_state *state = (union input_seq_state *)&seq->private;
1256 state->pos = *pos + 1;
1263 union input_seq_state *state = (union input_seq_state *)&seq->private;
1265 seq_printf(seq, "N: Number=%u Name=%s", state->pos, handler->name);
1266 if (handler->filter)
1268 if (handler->legacy_minors)
1269 seq_printf(seq, " Minor=%d", handler->minor);
1300 return -ENOMEM;
1316 return -ENOMEM;
1340 input_dev->name ? input_dev->name : ""); \
1357 len += snprintf(buf + len, max(size - len, 0), "%X,", i);
1367 "input:b%04Xv%04Xp%04Xe%04X-",
1368 id->id.bustype, id->id.vendor,
1369 id->id.product, id->id.version);
1371 len += input_print_modalias_bits(buf + len, size - len,
1372 'e', id->evbit, 0, EV_MAX);
1373 len += input_print_modalias_bits(buf + len, size - len,
1374 'k', id->keybit, KEY_MIN_INTERESTING, KEY_MAX);
1375 len += input_print_modalias_bits(buf + len, size - len,
1376 'r', id->relbit, 0, REL_MAX);
1377 len += input_print_modalias_bits(buf + len, size - len,
1378 'a', id->absbit, 0, ABS_MAX);
1379 len += input_print_modalias_bits(buf + len, size - len,
1380 'm', id->mscbit, 0, MSC_MAX);
1381 len += input_print_modalias_bits(buf + len, size - len,
1382 'l', id->ledbit, 0, LED_MAX);
1383 len += input_print_modalias_bits(buf + len, size - len,
1384 's', id->sndbit, 0, SND_MAX);
1385 len += input_print_modalias_bits(buf + len, size - len,
1386 'f', id->ffbit, 0, FF_MAX);
1387 len += input_print_modalias_bits(buf + len, size - len,
1388 'w', id->swbit, 0, SW_MAX);
1391 len += snprintf(buf + len, max(size - len, 0), "\n");
1417 int len = input_print_bitmap(buf, PAGE_SIZE, input_dev->propbit,
1432 return scnprintf(buf, PAGE_SIZE, "%d\n", input_dev->inhibited);
1444 return -EINVAL;
1479 return scnprintf(buf, PAGE_SIZE, "%04x\n", input_dev->id.name); \
1508 for (i = BITS_TO_LONGS(max) - 1; i >= 0; i--) {
1509 len += input_bits_to_string(buf + len, max(buf_size - len, 0),
1514 len += snprintf(buf + len, max(buf_size - len, 0), " ");
1525 len += snprintf(buf + len, max(buf_size - len, 0), "\n");
1537 input_dev->bm##bit, ev##_MAX, \
1546 INPUT_DEV_CAP_ATTR(ABS, abs);
1585 kfree(dev->poller);
1586 kfree(dev->absinfo);
1587 kfree(dev->vals);
1594 * Input uevent interface - loading event handlers based on
1603 return -ENOMEM;
1605 len = input_print_bitmap(&env->buf[env->buflen - 1],
1606 sizeof(env->buf) - env->buflen,
1608 if (len >= (sizeof(env->buf) - env->buflen))
1609 return -ENOMEM;
1611 env->buflen += len;
1621 return -ENOMEM;
1623 len = input_print_modalias(&env->buf[env->buflen - 1],
1624 sizeof(env->buf) - env->buflen,
1626 if (len >= (sizeof(env->buf) - env->buflen))
1627 return -ENOMEM;
1629 env->buflen += len;
1659 dev->id.bustype, dev->id.vendor,
1660 dev->id.product, dev->id.version);
1661 if (dev->name)
1662 INPUT_ADD_HOTPLUG_VAR("NAME=\"%s\"", dev->name);
1663 if (dev->phys)
1664 INPUT_ADD_HOTPLUG_VAR("PHYS=\"%s\"", dev->phys);
1665 if (dev->uniq)
1666 INPUT_ADD_HOTPLUG_VAR("UNIQ=\"%s\"", dev->uniq);
1668 INPUT_ADD_HOTPLUG_BM_VAR("PROP=", dev->propbit, INPUT_PROP_MAX);
1670 INPUT_ADD_HOTPLUG_BM_VAR("EV=", dev->evbit, EV_MAX);
1671 if (test_bit(EV_KEY, dev->evbit))
1672 INPUT_ADD_HOTPLUG_BM_VAR("KEY=", dev->keybit, KEY_MAX);
1673 if (test_bit(EV_REL, dev->evbit))
1674 INPUT_ADD_HOTPLUG_BM_VAR("REL=", dev->relbit, REL_MAX);
1675 if (test_bit(EV_ABS, dev->evbit))
1676 INPUT_ADD_HOTPLUG_BM_VAR("ABS=", dev->absbit, ABS_MAX);
1677 if (test_bit(EV_MSC, dev->evbit))
1678 INPUT_ADD_HOTPLUG_BM_VAR("MSC=", dev->mscbit, MSC_MAX);
1679 if (test_bit(EV_LED, dev->evbit))
1680 INPUT_ADD_HOTPLUG_BM_VAR("LED=", dev->ledbit, LED_MAX);
1681 if (test_bit(EV_SND, dev->evbit))
1682 INPUT_ADD_HOTPLUG_BM_VAR("SND=", dev->sndbit, SND_MAX);
1683 if (test_bit(EV_FF, dev->evbit))
1684 INPUT_ADD_HOTPLUG_BM_VAR("FF=", dev->ffbit, FF_MAX);
1685 if (test_bit(EV_SW, dev->evbit))
1686 INPUT_ADD_HOTPLUG_BM_VAR("SW=", dev->swbit, SW_MAX);
1698 if (!test_bit(EV_##type, dev->evbit)) \
1701 for_each_set_bit(i, dev->bits##bit, type##_CNT) { \
1702 active = test_bit(i, dev->bits); \
1706 dev->event(dev, EV_##type, i, on ? active : 0); \
1712 if (!dev->event)
1718 if (activate && test_bit(EV_REP, dev->evbit)) {
1719 dev->event(dev, EV_REP, REP_PERIOD, dev->rep[REP_PERIOD]);
1720 dev->event(dev, EV_REP, REP_DELAY, dev->rep[REP_DELAY]);
1725 * input_reset_device() - reset/restore the state of input device
1736 mutex_lock(&dev->mutex);
1737 spin_lock_irqsave(&dev->event_lock, flags);
1742 spin_unlock_irqrestore(&dev->event_lock, flags);
1743 mutex_unlock(&dev->mutex);
1751 mutex_lock(&dev->mutex);
1753 if (dev->inhibited)
1756 if (dev->users) {
1757 if (dev->close)
1758 dev->close(dev);
1759 if (dev->poller)
1760 input_dev_poller_stop(dev->poller);
1763 spin_lock_irq(&dev->event_lock);
1766 spin_unlock_irq(&dev->event_lock);
1768 dev->inhibited = true;
1771 mutex_unlock(&dev->mutex);
1779 mutex_lock(&dev->mutex);
1781 if (!dev->inhibited)
1784 if (dev->users) {
1785 if (dev->open) {
1786 ret = dev->open(dev);
1790 if (dev->poller)
1791 input_dev_poller_start(dev->poller);
1794 dev->inhibited = false;
1795 spin_lock_irq(&dev->event_lock);
1797 spin_unlock_irq(&dev->event_lock);
1800 mutex_unlock(&dev->mutex);
1809 spin_lock_irq(&input_dev->event_lock);
1820 spin_unlock_irq(&input_dev->event_lock);
1829 spin_lock_irq(&input_dev->event_lock);
1834 spin_unlock_irq(&input_dev->event_lock);
1843 spin_lock_irq(&input_dev->event_lock);
1851 spin_unlock_irq(&input_dev->event_lock);
1860 spin_lock_irq(&input_dev->event_lock);
1865 spin_unlock_irq(&input_dev->event_lock);
1900 * input_allocate_device - allocate memory for new input device
1910 static atomic_t input_no = ATOMIC_INIT(-1);
1915 dev->dev.type = &input_dev_type;
1916 dev->dev.class = &input_class;
1917 device_initialize(&dev->dev);
1918 mutex_init(&dev->mutex);
1919 spin_lock_init(&dev->event_lock);
1920 timer_setup(&dev->timer, NULL, 0);
1921 INIT_LIST_HEAD(&dev->h_list);
1922 INIT_LIST_HEAD(&dev->node);
1924 dev_set_name(&dev->dev, "input%lu",
1942 return devres->input == data;
1948 struct input_dev *input = devres->input;
1951 __func__, dev_name(&input->dev));
1956 * devm_input_allocate_device - allocate managed input device
1989 input->dev.parent = dev;
1990 input->devres_managed = true;
1992 devres->input = input;
2000 * input_free_device - free memory occupied by input_dev structure
2016 if (dev->devres_managed)
2017 WARN_ON(devres_destroy(dev->dev.parent,
2027 * input_set_timestamp - set timestamp for input events
2042 dev->timestamp[INPUT_CLK_MONO] = timestamp;
2043 dev->timestamp[INPUT_CLK_REAL] = ktime_mono_to_real(timestamp);
2044 dev->timestamp[INPUT_CLK_BOOT] = ktime_mono_to_any(timestamp,
2050 * input_get_timestamp - get timestamp for input events
2053 * A valid timestamp is a timestamp of non-zero value.
2059 if (!ktime_compare(dev->timestamp[INPUT_CLK_MONO], invalid_timestamp))
2062 return dev->timestamp;
2067 * input_set_capability - mark device as capable of a certain event
2073 * bitmap the function also adjusts dev->evbit.
2079 __set_bit(code, dev->keybit);
2083 __set_bit(code, dev->relbit);
2088 if (!dev->absinfo)
2091 __set_bit(code, dev->absbit);
2095 __set_bit(code, dev->mscbit);
2099 __set_bit(code, dev->swbit);
2103 __set_bit(code, dev->ledbit);
2107 __set_bit(code, dev->sndbit);
2111 __set_bit(code, dev->ffbit);
2124 __set_bit(type, dev->evbit);
2134 if (dev->mt) {
2135 mt_slots = dev->mt->num_slots;
2136 } else if (test_bit(ABS_MT_TRACKING_ID, dev->absbit)) {
2137 mt_slots = dev->absinfo[ABS_MT_TRACKING_ID].maximum -
2138 dev->absinfo[ABS_MT_TRACKING_ID].minimum + 1,
2140 } else if (test_bit(ABS_MT_POSITION_X, dev->absbit)) {
2148 if (test_bit(EV_ABS, dev->evbit))
2149 for_each_set_bit(i, dev->absbit, ABS_CNT)
2152 if (test_bit(EV_REL, dev->evbit))
2153 events += bitmap_weight(dev->relbit, REL_CNT);
2163 if (!test_bit(EV_##type, dev->evbit)) \
2164 memset(dev->bits##bit, 0, \
2165 sizeof(dev->bits##bit)); \
2172 INPUT_CLEANSE_BITMASK(dev, ABS, abs);
2188 list_for_each_entry_safe(handle, next, &dev->h_list, d_node)
2189 handle->handler->disconnect(handle);
2190 WARN_ON(!list_empty(&dev->h_list));
2192 del_timer_sync(&dev->timer);
2193 list_del_init(&dev->node);
2199 device_del(&dev->dev);
2205 struct input_dev *input = devres->input;
2208 __func__, dev_name(&input->dev));
2213 * input_enable_softrepeat - enable software autorepeat
2222 dev->timer.function = input_repeat_key;
2223 dev->rep[REP_DELAY] = delay;
2224 dev->rep[REP_PERIOD] = period;
2230 lockdep_assert_held(&dev->mutex);
2232 return !dev->inhibited && dev->users > 0;
2237 * input_register_device - register device with input core
2252 * that tear down of managed input devices is internally a 2-step process:
2267 if (test_bit(EV_ABS, dev->evbit) && !dev->absinfo) {
2268 dev_err(&dev->dev,
2269 "Absolute device without dev->absinfo, refusing to register\n");
2270 return -EINVAL;
2273 if (dev->devres_managed) {
2277 return -ENOMEM;
2279 devres->input = dev;
2283 __set_bit(EV_SYN, dev->evbit);
2286 __clear_bit(KEY_RESERVED, dev->keybit);
2288 /* Make sure that bitmasks not mentioned in dev->evbit are clean. */
2292 if (dev->hint_events_per_packet < packet_size)
2293 dev->hint_events_per_packet = packet_size;
2295 dev->max_vals = dev->hint_events_per_packet + 2;
2296 dev->vals = kcalloc(dev->max_vals, sizeof(*dev->vals), GFP_KERNEL);
2297 if (!dev->vals) {
2298 error = -ENOMEM;
2303 * If delay and period are pre-set by the driver, then autorepeating
2306 if (!dev->rep[REP_DELAY] && !dev->rep[REP_PERIOD])
2309 if (!dev->getkeycode)
2310 dev->getkeycode = input_default_getkeycode;
2312 if (!dev->setkeycode)
2313 dev->setkeycode = input_default_setkeycode;
2315 if (dev->poller)
2316 input_dev_poller_finalize(dev->poller);
2318 error = device_add(&dev->dev);
2322 path = kobject_get_path(&dev->dev.kobj, GFP_KERNEL);
2324 dev->name ? dev->name : "Unspecified device",
2332 list_add_tail(&dev->node, &input_dev_list);
2341 if (dev->devres_managed) {
2342 dev_dbg(dev->dev.parent, "%s: registering %s with devres.\n",
2343 __func__, dev_name(&dev->dev));
2344 devres_add(dev->dev.parent, devres);
2349 device_del(&dev->dev);
2351 kfree(dev->vals);
2352 dev->vals = NULL;
2360 * input_unregister_device - unregister previously registered device
2368 if (dev->devres_managed) {
2369 WARN_ON(devres_destroy(dev->dev.parent,
2386 * input_register_handler - register a new input handler
2402 INIT_LIST_HEAD(&handler->h_list);
2404 list_add_tail(&handler->node, &input_handler_list);
2417 * input_unregister_handler - unregisters an input handler
2429 list_for_each_entry_safe(handle, next, &handler->h_list, h_node)
2430 handler->disconnect(handle);
2431 WARN_ON(!list_empty(&handler->h_list));
2433 list_del_init(&handler->node);
2442 * input_handler_for_each_handle - handle iterator
2448 * it @data and stop when @fn returns a non-zero value. The function is
2461 list_for_each_entry_rcu(handle, &handler->h_list, h_node) {
2474 * input_register_handle - register a new input handle
2486 struct input_handler *handler = handle->handler;
2487 struct input_dev *dev = handle->dev;
2491 * We take dev->mutex here to prevent race with
2494 error = mutex_lock_interruptible(&dev->mutex);
2502 if (handler->filter)
2503 list_add_rcu(&handle->d_node, &dev->h_list);
2505 list_add_tail_rcu(&handle->d_node, &dev->h_list);
2507 mutex_unlock(&dev->mutex);
2510 * Since we are supposed to be called from ->connect()
2511 * which is mutually exclusive with ->disconnect()
2515 list_add_tail_rcu(&handle->h_node, &handler->h_list);
2517 if (handler->start)
2518 handler->start(handle);
2525 * input_unregister_handle - unregister an input handle
2536 struct input_dev *dev = handle->dev;
2538 list_del_rcu(&handle->h_node);
2541 * Take dev->mutex to prevent race with input_release_device().
2543 mutex_lock(&dev->mutex);
2544 list_del_rcu(&handle->d_node);
2545 mutex_unlock(&dev->mutex);
2552 * input_get_new_minor - allocates a new input minor number
2566 * This function should be called from input handler's ->connect()
2586 * input_free_minor - release previously allocated minor