1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (c) 2000-2001 Vojtech Pavlik
4 * Copyright (c) 2006-2010 Jiri Kosina
6 * HID to Linux Input mapping
11 * Should you need to contact me, the author, you can do so either by
12 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
13 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
16 #include <linux/module.h>
17 #include <linux/slab.h>
18 #include <linux/kernel.h>
20 #include <linux/hid.h>
21 #include <linux/hid-debug.h>
25 #define unk KEY_UNKNOWN
27 static const unsigned char hid_keyboard[256] = {
28 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
29 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3,
30 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26,
31 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
32 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
33 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
34 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
35 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
36 115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk,
37 122,123, 90, 91, 85,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,
38 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
39 unk,unk,unk,unk,unk,unk,179,180,unk,unk,unk,unk,unk,unk,unk,unk,
40 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
41 unk,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,unk,unk,unk,unk,
42 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
43 150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk
49 } hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
51 struct usage_priority {
52 __u32 usage; /* the HID usage associated */
53 bool global; /* we assume all usages to be slotted,
56 unsigned int slot_overwrite; /* for globals: allows to set the usage
57 * before or after the slots
62 * hid-input will convert this list into priorities:
63 * the first element will have the highest priority
64 * (the length of the following array) and the last
65 * element the lowest (1).
67 * hid-input will then shift the priority by 8 bits to leave some space
68 * in case drivers want to interleave other fields.
70 * To accommodate slotted devices, the slot priority is
71 * defined in the next 8 bits (defined by 0xff - slot).
73 * If drivers want to add fields before those, hid-input will
74 * leave out the first 8 bits of the priority value.
76 * This still leaves us 65535 individual priority values.
78 static const struct usage_priority hidinput_usages_priorities[] = {
79 { /* Eraser (eraser touching) must always come before tipswitch */
80 .usage = HID_DG_ERASER,
82 { /* Invert must always come before In Range */
83 .usage = HID_DG_INVERT,
85 { /* Is the tip of the tool touching? */
86 .usage = HID_DG_TIPSWITCH,
88 { /* Tip Pressure might emulate tip switch */
89 .usage = HID_DG_TIPPRESSURE,
91 { /* In Range needs to come after the other tool states */
92 .usage = HID_DG_INRANGE,
96 #define map_abs(c) hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c))
97 #define map_rel(c) hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c))
98 #define map_key(c) hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c))
99 #define map_led(c) hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c))
100 #define map_msc(c) hid_map_usage(hidinput, usage, &bit, &max, EV_MSC, (c))
102 #define map_abs_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \
104 #define map_key_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \
107 static bool match_scancode(struct hid_usage *usage,
108 unsigned int cur_idx, unsigned int scancode)
110 return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode;
113 static bool match_keycode(struct hid_usage *usage,
114 unsigned int cur_idx, unsigned int keycode)
117 * We should exclude unmapped usages when doing lookup by keycode.
119 return (usage->type == EV_KEY && usage->code == keycode);
122 static bool match_index(struct hid_usage *usage,
123 unsigned int cur_idx, unsigned int idx)
125 return cur_idx == idx;
128 typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage,
129 unsigned int cur_idx, unsigned int val);
131 static struct hid_usage *hidinput_find_key(struct hid_device *hid,
132 hid_usage_cmp_t match,
134 unsigned int *usage_idx)
136 unsigned int i, j, k, cur_idx = 0;
137 struct hid_report *report;
138 struct hid_usage *usage;
140 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
141 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
142 for (i = 0; i < report->maxfield; i++) {
143 for (j = 0; j < report->field[i]->maxusage; j++) {
144 usage = report->field[i]->usage + j;
145 if (usage->type == EV_KEY || usage->type == 0) {
146 if (match(usage, cur_idx, value)) {
148 *usage_idx = cur_idx;
160 static struct hid_usage *hidinput_locate_usage(struct hid_device *hid,
161 const struct input_keymap_entry *ke,
164 struct hid_usage *usage;
165 unsigned int scancode;
167 if (ke->flags & INPUT_KEYMAP_BY_INDEX)
168 usage = hidinput_find_key(hid, match_index, ke->index, index);
169 else if (input_scancode_to_scalar(ke, &scancode) == 0)
170 usage = hidinput_find_key(hid, match_scancode, scancode, index);
177 static int hidinput_getkeycode(struct input_dev *dev,
178 struct input_keymap_entry *ke)
180 struct hid_device *hid = input_get_drvdata(dev);
181 struct hid_usage *usage;
182 unsigned int scancode, index;
184 usage = hidinput_locate_usage(hid, ke, &index);
186 ke->keycode = usage->type == EV_KEY ?
187 usage->code : KEY_RESERVED;
189 scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE);
190 ke->len = sizeof(scancode);
191 memcpy(ke->scancode, &scancode, sizeof(scancode));
198 static int hidinput_setkeycode(struct input_dev *dev,
199 const struct input_keymap_entry *ke,
200 unsigned int *old_keycode)
202 struct hid_device *hid = input_get_drvdata(dev);
203 struct hid_usage *usage;
205 usage = hidinput_locate_usage(hid, ke, NULL);
207 *old_keycode = usage->type == EV_KEY ?
208 usage->code : KEY_RESERVED;
209 usage->type = EV_KEY;
210 usage->code = ke->keycode;
212 clear_bit(*old_keycode, dev->keybit);
213 set_bit(usage->code, dev->keybit);
214 dbg_hid("Assigned keycode %d to HID usage code %x\n",
215 usage->code, usage->hid);
218 * Set the keybit for the old keycode if the old keycode is used
221 if (hidinput_find_key(hid, match_keycode, *old_keycode, NULL))
222 set_bit(*old_keycode, dev->keybit);
232 * hidinput_calc_abs_res - calculate an absolute axis resolution
233 * @field: the HID report field to calculate resolution for
237 * (logical_maximum - logical_minimum)
238 * resolution = ----------------------------------------------------------
239 * (physical_maximum - physical_minimum) * 10 ^ unit_exponent
241 * as seen in the HID specification v1.11 6.2.2.7 Global Items.
243 * Only exponent 1 length units are processed. Centimeters and inches are
244 * converted to millimeters. Degrees are converted to radians.
246 __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
248 __s32 unit_exponent = field->unit_exponent;
249 __s32 logical_extents = field->logical_maximum -
250 field->logical_minimum;
251 __s32 physical_extents = field->physical_maximum -
252 field->physical_minimum;
255 /* Check if the extents are sane */
256 if (logical_extents <= 0 || physical_extents <= 0)
260 * Verify and convert units.
261 * See HID specification v1.11 6.2.2.7 Global Items for unit decoding
267 case ABS_MT_POSITION_X:
268 case ABS_MT_POSITION_Y:
271 case ABS_MT_TOUCH_MAJOR:
272 case ABS_MT_TOUCH_MINOR:
273 if (field->unit == 0x11) { /* If centimeters */
274 /* Convert to millimeters */
276 } else if (field->unit == 0x13) { /* If inches */
277 /* Convert to millimeters */
278 prev = physical_extents;
279 physical_extents *= 254;
280 if (physical_extents < prev)
294 if (field->unit == 0x14) { /* If degrees */
295 /* Convert to radians */
296 prev = logical_extents;
297 logical_extents *= 573;
298 if (logical_extents < prev)
301 } else if (field->unit != 0x12) { /* If not radians */
310 /* Apply negative unit exponent */
311 for (; unit_exponent < 0; unit_exponent++) {
312 prev = logical_extents;
313 logical_extents *= 10;
314 if (logical_extents < prev)
317 /* Apply positive unit exponent */
318 for (; unit_exponent > 0; unit_exponent--) {
319 prev = physical_extents;
320 physical_extents *= 10;
321 if (physical_extents < prev)
325 /* Calculate resolution */
326 return DIV_ROUND_CLOSEST(logical_extents, physical_extents);
328 EXPORT_SYMBOL_GPL(hidinput_calc_abs_res);
330 #ifdef CONFIG_HID_BATTERY_STRENGTH
331 static enum power_supply_property hidinput_battery_props[] = {
332 POWER_SUPPLY_PROP_PRESENT,
333 POWER_SUPPLY_PROP_ONLINE,
334 POWER_SUPPLY_PROP_CAPACITY,
335 POWER_SUPPLY_PROP_MODEL_NAME,
336 POWER_SUPPLY_PROP_STATUS,
337 POWER_SUPPLY_PROP_SCOPE,
340 #define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */
341 #define HID_BATTERY_QUIRK_FEATURE (1 << 1) /* ask for feature report */
342 #define HID_BATTERY_QUIRK_IGNORE (1 << 2) /* completely ignore the battery */
343 #define HID_BATTERY_QUIRK_AVOID_QUERY (1 << 3) /* do not query the battery */
345 static const struct hid_device_id hid_battery_quirks[] = {
346 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
347 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO),
348 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
349 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
350 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI),
351 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
352 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
353 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI),
354 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
355 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
356 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO),
357 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
358 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
359 USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI),
360 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
361 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM,
362 USB_DEVICE_ID_ELECOM_BM084),
363 HID_BATTERY_QUIRK_IGNORE },
364 { HID_USB_DEVICE(USB_VENDOR_ID_SYMBOL,
365 USB_DEVICE_ID_SYMBOL_SCANNER_3),
366 HID_BATTERY_QUIRK_IGNORE },
367 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK,
368 USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD),
369 HID_BATTERY_QUIRK_IGNORE },
370 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH,
371 USB_DEVICE_ID_LOGITECH_DINOVO_EDGE_KBD),
372 HID_BATTERY_QUIRK_IGNORE },
373 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_ASUS_TP420IA_TOUCHSCREEN),
374 HID_BATTERY_QUIRK_IGNORE },
375 { HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550_TOUCHSCREEN),
376 HID_BATTERY_QUIRK_IGNORE },
377 { HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550VE_TOUCHSCREEN),
378 HID_BATTERY_QUIRK_IGNORE },
379 { HID_USB_DEVICE(USB_VENDOR_ID_UGEE, USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_L),
380 HID_BATTERY_QUIRK_AVOID_QUERY },
381 { HID_USB_DEVICE(USB_VENDOR_ID_UGEE, USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_PRO_MW),
382 HID_BATTERY_QUIRK_AVOID_QUERY },
383 { HID_USB_DEVICE(USB_VENDOR_ID_UGEE, USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_PRO_SW),
384 HID_BATTERY_QUIRK_AVOID_QUERY },
385 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_15),
386 HID_BATTERY_QUIRK_IGNORE },
387 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_15T_DR100),
388 HID_BATTERY_QUIRK_IGNORE },
389 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_EU0009NV),
390 HID_BATTERY_QUIRK_IGNORE },
391 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_15),
392 HID_BATTERY_QUIRK_IGNORE },
393 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_13_AW0020NG),
394 HID_BATTERY_QUIRK_IGNORE },
395 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_SURFACE_GO_TOUCHSCREEN),
396 HID_BATTERY_QUIRK_IGNORE },
397 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_SURFACE_GO2_TOUCHSCREEN),
398 HID_BATTERY_QUIRK_IGNORE },
399 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_LENOVO_YOGA_C630_TOUCHSCREEN),
400 HID_BATTERY_QUIRK_IGNORE },
401 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_13T_AW100),
402 HID_BATTERY_QUIRK_IGNORE },
403 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_14T_EA100_V1),
404 HID_BATTERY_QUIRK_IGNORE },
405 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_14T_EA100_V2),
406 HID_BATTERY_QUIRK_IGNORE },
410 static unsigned find_battery_quirk(struct hid_device *hdev)
413 const struct hid_device_id *match;
415 match = hid_match_id(hdev, hid_battery_quirks);
417 quirks = match->driver_data;
422 static int hidinput_scale_battery_capacity(struct hid_device *dev,
425 if (dev->battery_min < dev->battery_max &&
426 value >= dev->battery_min && value <= dev->battery_max)
427 value = ((value - dev->battery_min) * 100) /
428 (dev->battery_max - dev->battery_min);
433 static int hidinput_query_battery_capacity(struct hid_device *dev)
438 buf = kmalloc(4, GFP_KERNEL);
442 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 4,
443 dev->battery_report_type, HID_REQ_GET_REPORT);
449 ret = hidinput_scale_battery_capacity(dev, buf[1]);
454 static int hidinput_get_battery_property(struct power_supply *psy,
455 enum power_supply_property prop,
456 union power_supply_propval *val)
458 struct hid_device *dev = power_supply_get_drvdata(psy);
463 case POWER_SUPPLY_PROP_PRESENT:
464 case POWER_SUPPLY_PROP_ONLINE:
468 case POWER_SUPPLY_PROP_CAPACITY:
469 if (dev->battery_status != HID_BATTERY_REPORTED &&
470 !dev->battery_avoid_query) {
471 value = hidinput_query_battery_capacity(dev);
475 value = dev->battery_capacity;
481 case POWER_SUPPLY_PROP_MODEL_NAME:
482 val->strval = dev->name;
485 case POWER_SUPPLY_PROP_STATUS:
486 if (dev->battery_status != HID_BATTERY_REPORTED &&
487 !dev->battery_avoid_query) {
488 value = hidinput_query_battery_capacity(dev);
492 dev->battery_capacity = value;
493 dev->battery_status = HID_BATTERY_QUERIED;
496 if (dev->battery_status == HID_BATTERY_UNKNOWN)
497 val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
499 val->intval = dev->battery_charge_status;
502 case POWER_SUPPLY_PROP_SCOPE:
503 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
514 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
515 struct hid_field *field, bool is_percentage)
517 struct power_supply_desc *psy_desc;
518 struct power_supply_config psy_cfg = { .drv_data = dev, };
524 return 0; /* already initialized? */
526 quirks = find_battery_quirk(dev);
528 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
529 dev->bus, dev->vendor, dev->product, dev->version, quirks);
531 if (quirks & HID_BATTERY_QUIRK_IGNORE)
534 psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL);
538 psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery",
540 dev->uniq : dev_name(&dev->dev));
541 if (!psy_desc->name) {
546 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY;
547 psy_desc->properties = hidinput_battery_props;
548 psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props);
549 psy_desc->use_for_apm = 0;
550 psy_desc->get_property = hidinput_get_battery_property;
552 min = field->logical_minimum;
553 max = field->logical_maximum;
555 if (is_percentage || (quirks & HID_BATTERY_QUIRK_PERCENT)) {
560 if (quirks & HID_BATTERY_QUIRK_FEATURE)
561 report_type = HID_FEATURE_REPORT;
563 dev->battery_min = min;
564 dev->battery_max = max;
565 dev->battery_report_type = report_type;
566 dev->battery_report_id = field->report->id;
567 dev->battery_charge_status = POWER_SUPPLY_STATUS_DISCHARGING;
570 * Stylus is normally not connected to the device and thus we
571 * can't query the device and get meaningful battery strength.
572 * We have to wait for the device to report it on its own.
574 dev->battery_avoid_query = report_type == HID_INPUT_REPORT &&
575 field->physical == HID_DG_STYLUS;
577 if (quirks & HID_BATTERY_QUIRK_AVOID_QUERY)
578 dev->battery_avoid_query = true;
580 dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg);
581 if (IS_ERR(dev->battery)) {
582 error = PTR_ERR(dev->battery);
583 hid_warn(dev, "can't register power supply: %d\n", error);
587 power_supply_powers(dev->battery, &dev->dev);
591 kfree(psy_desc->name);
598 static void hidinput_cleanup_battery(struct hid_device *dev)
600 const struct power_supply_desc *psy_desc;
605 psy_desc = dev->battery->desc;
606 power_supply_unregister(dev->battery);
607 kfree(psy_desc->name);
612 static void hidinput_update_battery(struct hid_device *dev, int value)
619 if (value == 0 || value < dev->battery_min || value > dev->battery_max)
622 capacity = hidinput_scale_battery_capacity(dev, value);
624 if (dev->battery_status != HID_BATTERY_REPORTED ||
625 capacity != dev->battery_capacity ||
626 ktime_after(ktime_get_coarse(), dev->battery_ratelimit_time)) {
627 dev->battery_capacity = capacity;
628 dev->battery_status = HID_BATTERY_REPORTED;
629 dev->battery_ratelimit_time =
630 ktime_add_ms(ktime_get_coarse(), 30 * 1000);
631 power_supply_changed(dev->battery);
635 static bool hidinput_set_battery_charge_status(struct hid_device *dev,
636 unsigned int usage, int value)
639 case HID_BAT_CHARGING:
640 dev->battery_charge_status = value ?
641 POWER_SUPPLY_STATUS_CHARGING :
642 POWER_SUPPLY_STATUS_DISCHARGING;
648 #else /* !CONFIG_HID_BATTERY_STRENGTH */
649 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
650 struct hid_field *field, bool is_percentage)
655 static void hidinput_cleanup_battery(struct hid_device *dev)
659 static void hidinput_update_battery(struct hid_device *dev, int value)
663 static bool hidinput_set_battery_charge_status(struct hid_device *dev,
664 unsigned int usage, int value)
668 #endif /* CONFIG_HID_BATTERY_STRENGTH */
670 static bool hidinput_field_in_collection(struct hid_device *device, struct hid_field *field,
671 unsigned int type, unsigned int usage)
673 struct hid_collection *collection;
675 collection = &device->collection[field->usage->collection_index];
677 return collection->type == type && collection->usage == usage;
680 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
681 struct hid_usage *usage, unsigned int usage_index)
683 struct input_dev *input = hidinput->input;
684 struct hid_device *device = input_get_drvdata(input);
685 const struct usage_priority *usage_priority = NULL;
688 unsigned long *bit = NULL;
690 field->hidinput = hidinput;
692 if (field->flags & HID_MAIN_ITEM_CONSTANT)
695 /* Ignore if report count is out of bounds. */
696 if (field->report_count < 1)
699 /* only LED usages are supported in output fields */
700 if (field->report_type == HID_OUTPUT_REPORT &&
701 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
705 /* assign a priority based on the static list declared here */
706 for (i = 0; i < ARRAY_SIZE(hidinput_usages_priorities); i++) {
707 if (usage->hid == hidinput_usages_priorities[i].usage) {
708 usage_priority = &hidinput_usages_priorities[i];
710 field->usages_priorities[usage_index] =
711 (ARRAY_SIZE(hidinput_usages_priorities) - i) << 8;
717 * For slotted devices, we need to also add the slot index
720 if (usage_priority && usage_priority->global)
721 field->usages_priorities[usage_index] |=
722 usage_priority->slot_overwrite;
724 field->usages_priorities[usage_index] |=
725 (0xff - field->slot_idx) << 16;
727 if (device->driver->input_mapping) {
728 int ret = device->driver->input_mapping(device, hidinput, field,
736 switch (usage->hid & HID_USAGE_PAGE) {
737 case HID_UP_UNDEFINED:
740 case HID_UP_KEYBOARD:
741 set_bit(EV_REP, input->evbit);
743 if ((usage->hid & HID_USAGE) < 256) {
744 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
745 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
747 map_key(KEY_UNKNOWN);
752 code = ((usage->hid - 1) & HID_USAGE);
754 switch (field->application) {
756 case HID_GD_POINTER: code += BTN_MOUSE; break;
757 case HID_GD_JOYSTICK:
759 code += BTN_JOYSTICK;
761 code += BTN_TRIGGER_HAPPY - 0x10;
767 code += BTN_TRIGGER_HAPPY - 0x10;
769 case HID_CP_CONSUMER_CONTROL:
770 if (hidinput_field_in_collection(device, field,
771 HID_COLLECTION_NAMED_ARRAY,
772 HID_CP_PROGRAMMABLEBUTTONS)) {
776 code += BTN_TRIGGER_HAPPY - 0x1e;
781 switch (field->physical) {
783 case HID_GD_POINTER: code += BTN_MOUSE; break;
784 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
785 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break;
786 default: code += BTN_MISC;
793 case HID_UP_SIMULATION:
794 switch (usage->hid & 0xffff) {
795 case 0xba: map_abs(ABS_RUDDER); break;
796 case 0xbb: map_abs(ABS_THROTTLE); break;
797 case 0xc4: map_abs(ABS_GAS); break;
798 case 0xc5: map_abs(ABS_BRAKE); break;
799 case 0xc8: map_abs(ABS_WHEEL); break;
800 default: goto ignore;
805 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
806 switch (usage->hid & 0xf) {
807 case 0x1: map_key_clear(KEY_POWER); break;
808 case 0x2: map_key_clear(KEY_SLEEP); break;
809 case 0x3: map_key_clear(KEY_WAKEUP); break;
810 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
811 case 0x5: map_key_clear(KEY_MENU); break;
812 case 0x6: map_key_clear(KEY_PROG1); break;
813 case 0x7: map_key_clear(KEY_HELP); break;
814 case 0x8: map_key_clear(KEY_EXIT); break;
815 case 0x9: map_key_clear(KEY_SELECT); break;
816 case 0xa: map_key_clear(KEY_RIGHT); break;
817 case 0xb: map_key_clear(KEY_LEFT); break;
818 case 0xc: map_key_clear(KEY_UP); break;
819 case 0xd: map_key_clear(KEY_DOWN); break;
820 case 0xe: map_key_clear(KEY_POWER2); break;
821 case 0xf: map_key_clear(KEY_RESTART); break;
822 default: goto unknown;
827 if ((usage->hid & 0xf0) == 0xa0) { /* SystemControl */
828 switch (usage->hid & 0xf) {
829 case 0x9: map_key_clear(KEY_MICMUTE); break;
830 default: goto ignore;
835 if ((usage->hid & 0xf0) == 0xb0) { /* SC - Display */
836 switch (usage->hid & 0xf) {
837 case 0x05: map_key_clear(KEY_SWITCHVIDEOMODE); break;
838 default: goto ignore;
844 * Some lazy vendors declare 255 usages for System Control,
845 * leading to the creation of ABS_X|Y axis and too many others.
846 * It wouldn't be a problem if joydev doesn't consider the
847 * device as a joystick then.
849 if (field->application == HID_GD_SYSTEM_CONTROL)
852 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */
853 switch (usage->hid) {
854 case HID_GD_UP: usage->hat_dir = 1; break;
855 case HID_GD_DOWN: usage->hat_dir = 5; break;
856 case HID_GD_RIGHT: usage->hat_dir = 3; break;
857 case HID_GD_LEFT: usage->hat_dir = 7; break;
858 default: goto unknown;
861 map_abs(field->dpad);
868 switch (usage->hid) {
869 /* These usage IDs map directly to the usage codes. */
870 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
871 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
872 if (field->flags & HID_MAIN_ITEM_RELATIVE)
873 map_rel(usage->hid & 0xf);
875 map_abs_clear(usage->hid & 0xf);
879 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
880 set_bit(REL_WHEEL, input->relbit);
881 map_rel(REL_WHEEL_HI_RES);
883 map_abs(usage->hid & 0xf);
886 case HID_GD_SLIDER: case HID_GD_DIAL:
887 if (field->flags & HID_MAIN_ITEM_RELATIVE)
888 map_rel(usage->hid & 0xf);
890 map_abs(usage->hid & 0xf);
893 case HID_GD_HATSWITCH:
894 usage->hat_min = field->logical_minimum;
895 usage->hat_max = field->logical_maximum;
899 case HID_GD_START: map_key_clear(BTN_START); break;
900 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
902 case HID_GD_RFKILL_BTN:
903 /* MS wireless radio ctl extension, also check CA */
904 if (field->application == HID_GD_WIRELESS_RADIO_CTLS) {
905 map_key_clear(KEY_RFKILL);
906 /* We need to simulate the btn release */
907 field->flags |= HID_MAIN_ITEM_RELATIVE;
912 default: goto unknown;
918 switch (usage->hid & 0xffff) { /* HID-Value: */
919 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */
920 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */
921 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */
922 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */
923 case 0x05: map_led (LED_KANA); break; /* "Kana" */
924 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */
925 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */
926 case 0x09: map_led (LED_MUTE); break; /* "Mute" */
927 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */
928 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */
929 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */
931 default: goto ignore;
935 case HID_UP_DIGITIZER:
936 if ((field->application & 0xff) == 0x01) /* Digitizer */
937 __set_bit(INPUT_PROP_POINTER, input->propbit);
938 else if ((field->application & 0xff) == 0x02) /* Pen */
939 __set_bit(INPUT_PROP_DIRECT, input->propbit);
941 switch (usage->hid & 0xff) {
942 case 0x00: /* Undefined */
945 case 0x30: /* TipPressure */
946 if (!test_bit(BTN_TOUCH, input->keybit)) {
947 device->quirks |= HID_QUIRK_NOTOUCH;
948 set_bit(EV_KEY, input->evbit);
949 set_bit(BTN_TOUCH, input->keybit);
951 map_abs_clear(ABS_PRESSURE);
954 case 0x32: /* InRange */
955 switch (field->physical) {
957 map_key(BTN_TOOL_MOUSE);
960 map_key(BTN_TOOL_FINGER);
964 * If the physical is not given,
965 * rely on the application.
967 if (!field->physical) {
968 switch (field->application) {
969 case HID_DG_TOUCHSCREEN:
970 case HID_DG_TOUCHPAD:
971 map_key_clear(BTN_TOOL_FINGER);
974 map_key_clear(BTN_TOOL_PEN);
977 map_key(BTN_TOOL_PEN);
983 case 0x3b: /* Battery Strength */
984 hidinput_setup_battery(device, HID_INPUT_REPORT, field, false);
985 usage->type = EV_PWR;
988 case 0x3c: /* Invert */
989 map_key_clear(BTN_TOOL_RUBBER);
992 case 0x3d: /* X Tilt */
993 map_abs_clear(ABS_TILT_X);
996 case 0x3e: /* Y Tilt */
997 map_abs_clear(ABS_TILT_Y);
1000 case 0x33: /* Touch */
1001 case 0x42: /* TipSwitch */
1002 case 0x43: /* TipSwitch2 */
1003 device->quirks &= ~HID_QUIRK_NOTOUCH;
1004 map_key_clear(BTN_TOUCH);
1007 case 0x44: /* BarrelSwitch */
1008 map_key_clear(BTN_STYLUS);
1011 case 0x45: /* ERASER */
1013 * This event is reported when eraser tip touches the surface.
1014 * Actual eraser (BTN_TOOL_RUBBER) is set by Invert usage when
1015 * tool gets in proximity.
1017 map_key_clear(BTN_TOUCH);
1020 case 0x46: /* TabletPick */
1021 case 0x5a: /* SecondaryBarrelSwitch */
1022 map_key_clear(BTN_STYLUS2);
1025 case 0x5b: /* TransducerSerialNumber */
1026 case 0x6e: /* TransducerSerialNumber2 */
1027 map_msc(MSC_SERIAL);
1030 default: goto unknown;
1034 case HID_UP_TELEPHONY:
1035 switch (usage->hid & HID_USAGE) {
1036 case 0x2f: map_key_clear(KEY_MICMUTE); break;
1037 case 0xb0: map_key_clear(KEY_NUMERIC_0); break;
1038 case 0xb1: map_key_clear(KEY_NUMERIC_1); break;
1039 case 0xb2: map_key_clear(KEY_NUMERIC_2); break;
1040 case 0xb3: map_key_clear(KEY_NUMERIC_3); break;
1041 case 0xb4: map_key_clear(KEY_NUMERIC_4); break;
1042 case 0xb5: map_key_clear(KEY_NUMERIC_5); break;
1043 case 0xb6: map_key_clear(KEY_NUMERIC_6); break;
1044 case 0xb7: map_key_clear(KEY_NUMERIC_7); break;
1045 case 0xb8: map_key_clear(KEY_NUMERIC_8); break;
1046 case 0xb9: map_key_clear(KEY_NUMERIC_9); break;
1047 case 0xba: map_key_clear(KEY_NUMERIC_STAR); break;
1048 case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break;
1049 case 0xbc: map_key_clear(KEY_NUMERIC_A); break;
1050 case 0xbd: map_key_clear(KEY_NUMERIC_B); break;
1051 case 0xbe: map_key_clear(KEY_NUMERIC_C); break;
1052 case 0xbf: map_key_clear(KEY_NUMERIC_D); break;
1053 default: goto ignore;
1057 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */
1058 switch (usage->hid & HID_USAGE) {
1059 case 0x000: goto ignore;
1060 case 0x030: map_key_clear(KEY_POWER); break;
1061 case 0x031: map_key_clear(KEY_RESTART); break;
1062 case 0x032: map_key_clear(KEY_SLEEP); break;
1063 case 0x034: map_key_clear(KEY_SLEEP); break;
1064 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break;
1065 case 0x036: map_key_clear(BTN_MISC); break;
1067 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */
1068 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */
1069 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */
1070 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */
1071 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */
1072 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */
1073 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */
1074 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */
1075 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */
1077 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */
1078 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */
1079 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */
1080 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */
1081 case 0x069: map_key_clear(KEY_RED); break;
1082 case 0x06a: map_key_clear(KEY_GREEN); break;
1083 case 0x06b: map_key_clear(KEY_BLUE); break;
1084 case 0x06c: map_key_clear(KEY_YELLOW); break;
1085 case 0x06d: map_key_clear(KEY_ASPECT_RATIO); break;
1087 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break;
1088 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break;
1089 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break;
1090 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break;
1091 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break;
1092 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break;
1094 case 0x079: map_key_clear(KEY_KBDILLUMUP); break;
1095 case 0x07a: map_key_clear(KEY_KBDILLUMDOWN); break;
1096 case 0x07c: map_key_clear(KEY_KBDILLUMTOGGLE); break;
1098 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break;
1099 case 0x083: map_key_clear(KEY_LAST); break;
1100 case 0x084: map_key_clear(KEY_ENTER); break;
1101 case 0x088: map_key_clear(KEY_PC); break;
1102 case 0x089: map_key_clear(KEY_TV); break;
1103 case 0x08a: map_key_clear(KEY_WWW); break;
1104 case 0x08b: map_key_clear(KEY_DVD); break;
1105 case 0x08c: map_key_clear(KEY_PHONE); break;
1106 case 0x08d: map_key_clear(KEY_PROGRAM); break;
1107 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break;
1108 case 0x08f: map_key_clear(KEY_GAMES); break;
1109 case 0x090: map_key_clear(KEY_MEMO); break;
1110 case 0x091: map_key_clear(KEY_CD); break;
1111 case 0x092: map_key_clear(KEY_VCR); break;
1112 case 0x093: map_key_clear(KEY_TUNER); break;
1113 case 0x094: map_key_clear(KEY_EXIT); break;
1114 case 0x095: map_key_clear(KEY_HELP); break;
1115 case 0x096: map_key_clear(KEY_TAPE); break;
1116 case 0x097: map_key_clear(KEY_TV2); break;
1117 case 0x098: map_key_clear(KEY_SAT); break;
1118 case 0x09a: map_key_clear(KEY_PVR); break;
1120 case 0x09c: map_key_clear(KEY_CHANNELUP); break;
1121 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
1122 case 0x0a0: map_key_clear(KEY_VCR2); break;
1124 case 0x0b0: map_key_clear(KEY_PLAY); break;
1125 case 0x0b1: map_key_clear(KEY_PAUSE); break;
1126 case 0x0b2: map_key_clear(KEY_RECORD); break;
1127 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
1128 case 0x0b4: map_key_clear(KEY_REWIND); break;
1129 case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
1130 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
1131 case 0x0b7: map_key_clear(KEY_STOPCD); break;
1132 case 0x0b8: map_key_clear(KEY_EJECTCD); break;
1133 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break;
1134 case 0x0b9: map_key_clear(KEY_SHUFFLE); break;
1135 case 0x0bf: map_key_clear(KEY_SLOW); break;
1137 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
1138 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break;
1140 case 0x0d5: map_key_clear(KEY_CAMERA_ACCESS_ENABLE); break;
1141 case 0x0d6: map_key_clear(KEY_CAMERA_ACCESS_DISABLE); break;
1142 case 0x0d7: map_key_clear(KEY_CAMERA_ACCESS_TOGGLE); break;
1143 case 0x0d8: map_key_clear(KEY_DICTATE); break;
1144 case 0x0d9: map_key_clear(KEY_EMOJI_PICKER); break;
1146 case 0x0e0: map_abs_clear(ABS_VOLUME); break;
1147 case 0x0e2: map_key_clear(KEY_MUTE); break;
1148 case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
1149 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
1150 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
1151 case 0x0f5: map_key_clear(KEY_SLOW); break;
1153 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break;
1154 case 0x182: map_key_clear(KEY_BOOKMARKS); break;
1155 case 0x183: map_key_clear(KEY_CONFIG); break;
1156 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break;
1157 case 0x185: map_key_clear(KEY_EDITOR); break;
1158 case 0x186: map_key_clear(KEY_SPREADSHEET); break;
1159 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break;
1160 case 0x188: map_key_clear(KEY_PRESENTATION); break;
1161 case 0x189: map_key_clear(KEY_DATABASE); break;
1162 case 0x18a: map_key_clear(KEY_MAIL); break;
1163 case 0x18b: map_key_clear(KEY_NEWS); break;
1164 case 0x18c: map_key_clear(KEY_VOICEMAIL); break;
1165 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break;
1166 case 0x18e: map_key_clear(KEY_CALENDAR); break;
1167 case 0x18f: map_key_clear(KEY_TASKMANAGER); break;
1168 case 0x190: map_key_clear(KEY_JOURNAL); break;
1169 case 0x191: map_key_clear(KEY_FINANCE); break;
1170 case 0x192: map_key_clear(KEY_CALC); break;
1171 case 0x193: map_key_clear(KEY_PLAYER); break;
1172 case 0x194: map_key_clear(KEY_FILE); break;
1173 case 0x196: map_key_clear(KEY_WWW); break;
1174 case 0x199: map_key_clear(KEY_CHAT); break;
1175 case 0x19c: map_key_clear(KEY_LOGOFF); break;
1176 case 0x19e: map_key_clear(KEY_COFFEE); break;
1177 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break;
1178 case 0x1a2: map_key_clear(KEY_APPSELECT); break;
1179 case 0x1a3: map_key_clear(KEY_NEXT); break;
1180 case 0x1a4: map_key_clear(KEY_PREVIOUS); break;
1181 case 0x1a6: map_key_clear(KEY_HELP); break;
1182 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
1183 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break;
1184 case 0x1ae: map_key_clear(KEY_KEYBOARD); break;
1185 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break;
1186 case 0x1b4: map_key_clear(KEY_FILE); break;
1187 case 0x1b6: map_key_clear(KEY_IMAGES); break;
1188 case 0x1b7: map_key_clear(KEY_AUDIO); break;
1189 case 0x1b8: map_key_clear(KEY_VIDEO); break;
1190 case 0x1bc: map_key_clear(KEY_MESSENGER); break;
1191 case 0x1bd: map_key_clear(KEY_INFO); break;
1192 case 0x1cb: map_key_clear(KEY_ASSISTANT); break;
1193 case 0x201: map_key_clear(KEY_NEW); break;
1194 case 0x202: map_key_clear(KEY_OPEN); break;
1195 case 0x203: map_key_clear(KEY_CLOSE); break;
1196 case 0x204: map_key_clear(KEY_EXIT); break;
1197 case 0x207: map_key_clear(KEY_SAVE); break;
1198 case 0x208: map_key_clear(KEY_PRINT); break;
1199 case 0x209: map_key_clear(KEY_PROPS); break;
1200 case 0x21a: map_key_clear(KEY_UNDO); break;
1201 case 0x21b: map_key_clear(KEY_COPY); break;
1202 case 0x21c: map_key_clear(KEY_CUT); break;
1203 case 0x21d: map_key_clear(KEY_PASTE); break;
1204 case 0x21f: map_key_clear(KEY_FIND); break;
1205 case 0x221: map_key_clear(KEY_SEARCH); break;
1206 case 0x222: map_key_clear(KEY_GOTO); break;
1207 case 0x223: map_key_clear(KEY_HOMEPAGE); break;
1208 case 0x224: map_key_clear(KEY_BACK); break;
1209 case 0x225: map_key_clear(KEY_FORWARD); break;
1210 case 0x226: map_key_clear(KEY_STOP); break;
1211 case 0x227: map_key_clear(KEY_REFRESH); break;
1212 case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
1213 case 0x22d: map_key_clear(KEY_ZOOMIN); break;
1214 case 0x22e: map_key_clear(KEY_ZOOMOUT); break;
1215 case 0x22f: map_key_clear(KEY_ZOOMRESET); break;
1216 case 0x232: map_key_clear(KEY_FULL_SCREEN); break;
1217 case 0x233: map_key_clear(KEY_SCROLLUP); break;
1218 case 0x234: map_key_clear(KEY_SCROLLDOWN); break;
1219 case 0x238: /* AC Pan */
1220 set_bit(REL_HWHEEL, input->relbit);
1221 map_rel(REL_HWHEEL_HI_RES);
1223 case 0x23d: map_key_clear(KEY_EDIT); break;
1224 case 0x25f: map_key_clear(KEY_CANCEL); break;
1225 case 0x269: map_key_clear(KEY_INSERT); break;
1226 case 0x26a: map_key_clear(KEY_DELETE); break;
1227 case 0x279: map_key_clear(KEY_REDO); break;
1229 case 0x289: map_key_clear(KEY_REPLY); break;
1230 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
1231 case 0x28c: map_key_clear(KEY_SEND); break;
1233 case 0x29d: map_key_clear(KEY_KBD_LAYOUT_NEXT); break;
1235 case 0x2a2: map_key_clear(KEY_ALL_APPLICATIONS); break;
1237 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break;
1238 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break;
1239 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break;
1240 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break;
1241 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break;
1242 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break;
1244 case 0x29f: map_key_clear(KEY_SCALE); break;
1246 default: map_key_clear(KEY_UNKNOWN);
1250 case HID_UP_GENDEVCTRLS:
1251 switch (usage->hid) {
1252 case HID_DC_BATTERYSTRENGTH:
1253 hidinput_setup_battery(device, HID_INPUT_REPORT, field, false);
1254 usage->type = EV_PWR;
1259 case HID_UP_BATTERY:
1260 switch (usage->hid) {
1261 case HID_BAT_ABSOLUTESTATEOFCHARGE:
1262 hidinput_setup_battery(device, HID_INPUT_REPORT, field, true);
1263 usage->type = EV_PWR;
1265 case HID_BAT_CHARGING:
1266 usage->type = EV_PWR;
1271 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
1272 set_bit(EV_REP, input->evbit);
1273 switch (usage->hid & HID_USAGE) {
1274 case 0x021: map_key_clear(KEY_PRINT); break;
1275 case 0x070: map_key_clear(KEY_HP); break;
1276 case 0x071: map_key_clear(KEY_CAMERA); break;
1277 case 0x072: map_key_clear(KEY_SOUND); break;
1278 case 0x073: map_key_clear(KEY_QUESTION); break;
1279 case 0x080: map_key_clear(KEY_EMAIL); break;
1280 case 0x081: map_key_clear(KEY_CHAT); break;
1281 case 0x082: map_key_clear(KEY_SEARCH); break;
1282 case 0x083: map_key_clear(KEY_CONNECT); break;
1283 case 0x084: map_key_clear(KEY_FINANCE); break;
1284 case 0x085: map_key_clear(KEY_SPORT); break;
1285 case 0x086: map_key_clear(KEY_SHOP); break;
1286 default: goto ignore;
1290 case HID_UP_HPVENDOR2:
1291 set_bit(EV_REP, input->evbit);
1292 switch (usage->hid & HID_USAGE) {
1293 case 0x001: map_key_clear(KEY_MICMUTE); break;
1294 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break;
1295 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break;
1296 default: goto ignore;
1300 case HID_UP_MSVENDOR:
1303 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
1304 set_bit(EV_REP, input->evbit);
1307 case HID_UP_LOGIVENDOR:
1308 /* intentional fallback */
1309 case HID_UP_LOGIVENDOR2:
1310 /* intentional fallback */
1311 case HID_UP_LOGIVENDOR3:
1315 switch (usage->hid & HID_USAGE) {
1316 case 0xa4: map_key_clear(BTN_DEAD); break;
1317 default: goto ignore;
1323 if (field->report_size == 1) {
1324 if (field->report->type == HID_OUTPUT_REPORT) {
1331 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
1340 /* Mapping failed, bail out */
1344 if (device->driver->input_mapped &&
1345 device->driver->input_mapped(device, hidinput, field, usage,
1348 * The driver indicated that no further generic handling
1349 * of the usage is desired.
1354 set_bit(usage->type, input->evbit);
1357 * This part is *really* controversial:
1358 * - HID aims at being generic so we should do our best to export
1359 * all incoming events
1360 * - HID describes what events are, so there is no reason for ABS_X
1361 * to be mapped to ABS_Y
1362 * - HID is using *_MISC+N as a default value, but nothing prevents
1363 * *_MISC+N to overwrite a legitimate even, which confuses userspace
1364 * (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different
1367 * If devices still want to use this (at their own risk), they will
1368 * have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but
1369 * the default should be a reliable mapping.
1371 while (usage->code <= max && test_and_set_bit(usage->code, bit)) {
1372 if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) {
1373 usage->code = find_next_zero_bit(bit,
1377 device->status |= HID_STAT_DUP_DETECTED;
1382 if (usage->code > max)
1385 if (usage->type == EV_ABS) {
1387 int a = field->logical_minimum;
1388 int b = field->logical_maximum;
1390 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
1391 a = field->logical_minimum = 0;
1392 b = field->logical_maximum = 255;
1395 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
1396 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
1397 else input_set_abs_params(input, usage->code, a, b, 0, 0);
1399 input_abs_set_res(input, usage->code,
1400 hidinput_calc_abs_res(field, usage->code));
1402 /* use a larger default input buffer for MT devices */
1403 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
1404 input_set_events_per_packet(input, 60);
1407 if (usage->type == EV_ABS &&
1408 (usage->hat_min < usage->hat_max || usage->hat_dir)) {
1410 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
1411 input_set_abs_params(input, i, -1, 1, 0, 0);
1412 set_bit(i, input->absbit);
1414 if (usage->hat_dir && !field->dpad)
1415 field->dpad = usage->code;
1418 /* for those devices which produce Consumer volume usage as relative,
1419 * we emulate pressing volumeup/volumedown appropriate number of times
1420 * in hidinput_hid_event()
1422 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1423 (usage->code == ABS_VOLUME)) {
1424 set_bit(KEY_VOLUMEUP, input->keybit);
1425 set_bit(KEY_VOLUMEDOWN, input->keybit);
1428 if (usage->type == EV_KEY) {
1429 set_bit(EV_MSC, input->evbit);
1430 set_bit(MSC_SCAN, input->mscbit);
1440 static void hidinput_handle_scroll(struct hid_usage *usage,
1441 struct input_dev *input,
1450 if (usage->code == REL_WHEEL_HI_RES)
1456 * Windows reports one wheel click as value 120. Where a high-res
1457 * scroll wheel is present, a fraction of 120 is reported instead.
1458 * Our REL_WHEEL_HI_RES axis does the same because all HW must
1459 * adhere to the 120 expectation.
1461 hi_res = value * 120/usage->resolution_multiplier;
1463 usage->wheel_accumulated += hi_res;
1464 lo_res = usage->wheel_accumulated/120;
1466 usage->wheel_accumulated -= lo_res * 120;
1468 input_event(input, EV_REL, code, lo_res);
1469 input_event(input, EV_REL, usage->code, hi_res);
1472 static void hid_report_release_tool(struct hid_report *report, struct input_dev *input,
1475 /* if the given tool is not currently reported, ignore */
1476 if (!test_bit(tool, input->key))
1480 * if the given tool was previously set, release it,
1481 * release any TOUCH and send an EV_SYN
1483 input_event(input, EV_KEY, BTN_TOUCH, 0);
1484 input_event(input, EV_KEY, tool, 0);
1485 input_event(input, EV_SYN, SYN_REPORT, 0);
1490 static void hid_report_set_tool(struct hid_report *report, struct input_dev *input,
1491 unsigned int new_tool)
1493 if (report->tool != new_tool)
1494 hid_report_release_tool(report, input, report->tool);
1496 input_event(input, EV_KEY, new_tool, 1);
1497 report->tool = new_tool;
1500 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
1502 struct input_dev *input;
1503 struct hid_report *report = field->report;
1504 unsigned *quirks = &hid->quirks;
1509 if (usage->type == EV_PWR) {
1510 bool handled = hidinput_set_battery_charge_status(hid, usage->hid, value);
1513 hidinput_update_battery(hid, value);
1518 if (!field->hidinput)
1521 input = field->hidinput->input;
1523 if (usage->hat_min < usage->hat_max || usage->hat_dir) {
1524 int hat_dir = usage->hat_dir;
1526 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
1527 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
1528 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);
1529 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
1534 * Ignore out-of-range values as per HID specification,
1535 * section 5.10 and 6.2.25, when NULL state bit is present.
1536 * When it's not, clamp the value to match Microsoft's input
1537 * driver as mentioned in "Required HID usages for digitizers":
1538 * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp
1540 * The logical_minimum < logical_maximum check is done so that we
1541 * don't unintentionally discard values sent by devices which
1542 * don't specify logical min and max.
1544 if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
1545 field->logical_minimum < field->logical_maximum) {
1546 if (field->flags & HID_MAIN_ITEM_NULL_STATE &&
1547 (value < field->logical_minimum ||
1548 value > field->logical_maximum)) {
1549 dbg_hid("Ignoring out-of-range value %x\n", value);
1552 value = clamp(value,
1553 field->logical_minimum,
1554 field->logical_maximum);
1557 switch (usage->hid) {
1559 report->tool_active |= !!value;
1562 * if eraser is set, we must enforce BTN_TOOL_RUBBER
1563 * to accommodate for devices not following the spec.
1566 hid_report_set_tool(report, input, BTN_TOOL_RUBBER);
1567 else if (report->tool != BTN_TOOL_RUBBER)
1568 /* value is off, tool is not rubber, ignore */
1571 /* let hid-input set BTN_TOUCH */
1575 report->tool_active |= !!value;
1578 * If invert is set, we store BTN_TOOL_RUBBER.
1581 hid_report_set_tool(report, input, BTN_TOOL_RUBBER);
1582 else if (!report->tool_active)
1583 /* tool_active not set means Invert and Eraser are not set */
1584 hid_report_release_tool(report, input, BTN_TOOL_RUBBER);
1586 /* no further processing */
1589 case HID_DG_INRANGE:
1590 report->tool_active |= !!value;
1592 if (report->tool_active) {
1594 * if tool is not set but is marked as active,
1598 report->tool = usage->code;
1600 /* drivers may have changed the value behind our back, resend it */
1601 hid_report_set_tool(report, input, report->tool);
1603 hid_report_release_tool(report, input, usage->code);
1606 /* reset tool_active for the next event */
1607 report->tool_active = false;
1609 /* no further processing */
1612 case HID_DG_TIPSWITCH:
1613 report->tool_active |= !!value;
1615 /* if tool is set to RUBBER we should ignore the current value */
1616 if (report->tool == BTN_TOOL_RUBBER)
1621 case HID_DG_TIPPRESSURE:
1622 if (*quirks & HID_QUIRK_NOTOUCH) {
1623 int a = field->logical_minimum;
1624 int b = field->logical_maximum;
1626 if (value > a + ((b - a) >> 3)) {
1627 input_event(input, EV_KEY, BTN_TOUCH, 1);
1628 report->tool_active = true;
1633 case HID_UP_PID | 0x83UL: /* Simultaneous Effects Max */
1634 dbg_hid("Maximum Effects - %d\n",value);
1637 case HID_UP_PID | 0x7fUL:
1638 dbg_hid("PID Pool Report\n");
1642 switch (usage->type) {
1644 if (usage->code == 0) /* Key 0 is "unassigned", not KEY_UNKNOWN */
1649 if (usage->code == REL_WHEEL_HI_RES ||
1650 usage->code == REL_HWHEEL_HI_RES) {
1651 hidinput_handle_scroll(usage, input, value);
1657 if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
1658 usage->code == ABS_VOLUME) {
1659 int count = abs(value);
1660 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
1663 for (i = 0; i < count; i++) {
1664 input_event(input, EV_KEY, direction, 1);
1666 input_event(input, EV_KEY, direction, 0);
1671 } else if (((*quirks & HID_QUIRK_X_INVERT) && usage->code == ABS_X) ||
1672 ((*quirks & HID_QUIRK_Y_INVERT) && usage->code == ABS_Y))
1673 value = field->logical_maximum - value;
1678 * Ignore reports for absolute data if the data didn't change. This is
1679 * not only an optimization but also fixes 'dead' key reports. Some
1680 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID
1681 * 0x31 and 0x32) report multiple keys, even though a localized keyboard
1682 * can only have one of them physically available. The 'dead' keys
1683 * report constant 0. As all map to the same keycode, they'd confuse
1684 * the input layer. If we filter the 'dead' keys on the HID level, we
1685 * skip the keycode translation and only forward real events.
1687 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE |
1688 HID_MAIN_ITEM_BUFFERED_BYTE)) &&
1689 (field->flags & HID_MAIN_ITEM_VARIABLE) &&
1690 usage->usage_index < field->maxusage &&
1691 value == field->value[usage->usage_index])
1694 /* report the usage code as scancode if the key status has changed */
1695 if (usage->type == EV_KEY &&
1696 (!test_bit(usage->code, input->key)) == value)
1697 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
1699 input_event(input, usage->type, usage->code, value);
1701 if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
1702 usage->type == EV_KEY && value) {
1704 input_event(input, usage->type, usage->code, 0);
1708 void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1710 struct hid_input *hidinput;
1712 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1715 list_for_each_entry(hidinput, &hid->inputs, list)
1716 input_sync(hidinput->input);
1718 EXPORT_SYMBOL_GPL(hidinput_report_event);
1720 static int hidinput_find_field(struct hid_device *hid, unsigned int type,
1721 unsigned int code, struct hid_field **field)
1723 struct hid_report *report;
1726 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1727 for (i = 0; i < report->maxfield; i++) {
1728 *field = report->field[i];
1729 for (j = 0; j < (*field)->maxusage; j++)
1730 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1737 struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1739 struct hid_report *report;
1740 struct hid_field *field;
1743 list_for_each_entry(report,
1744 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1746 for (i = 0; i < report->maxfield; i++) {
1747 field = report->field[i];
1748 for (j = 0; j < field->maxusage; j++)
1749 if (field->usage[j].type == EV_LED)
1755 EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1757 unsigned int hidinput_count_leds(struct hid_device *hid)
1759 struct hid_report *report;
1760 struct hid_field *field;
1762 unsigned int count = 0;
1764 list_for_each_entry(report,
1765 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1767 for (i = 0; i < report->maxfield; i++) {
1768 field = report->field[i];
1769 for (j = 0; j < field->maxusage; j++)
1770 if (field->usage[j].type == EV_LED &&
1777 EXPORT_SYMBOL_GPL(hidinput_count_leds);
1779 static void hidinput_led_worker(struct work_struct *work)
1781 struct hid_device *hid = container_of(work, struct hid_device,
1783 struct hid_field *field;
1784 struct hid_report *report;
1789 field = hidinput_get_led_field(hid);
1794 * field->report is accessed unlocked regarding HID core. So there might
1795 * be another incoming SET-LED request from user-space, which changes
1796 * the LED state while we assemble our outgoing buffer. However, this
1797 * doesn't matter as hid_output_report() correctly converts it into a
1798 * boolean value no matter what information is currently set on the LED
1799 * field (even garbage). So the remote device will always get a valid
1801 * And in case we send a wrong value, a next led worker is spawned
1802 * for every SET-LED request so the following worker will send the
1803 * correct value, guaranteed!
1806 report = field->report;
1808 /* use custom SET_REPORT request if possible (asynchronous) */
1809 if (hid->ll_driver->request)
1810 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT);
1812 /* fall back to generic raw-output-report */
1813 len = hid_report_len(report);
1814 buf = hid_alloc_report_buf(report, GFP_KERNEL);
1818 hid_output_report(report, buf);
1819 /* synchronous output report */
1820 ret = hid_hw_output_report(hid, buf, len);
1822 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT,
1823 HID_REQ_SET_REPORT);
1827 static int hidinput_input_event(struct input_dev *dev, unsigned int type,
1828 unsigned int code, int value)
1830 struct hid_device *hid = input_get_drvdata(dev);
1831 struct hid_field *field;
1835 return input_ff_event(dev, type, code, value);
1840 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
1841 hid_warn(dev, "event field not found\n");
1845 hid_set_field(field, offset, value);
1847 schedule_work(&hid->led_work);
1851 static int hidinput_open(struct input_dev *dev)
1853 struct hid_device *hid = input_get_drvdata(dev);
1855 return hid_hw_open(hid);
1858 static void hidinput_close(struct input_dev *dev)
1860 struct hid_device *hid = input_get_drvdata(dev);
1865 static bool __hidinput_change_resolution_multipliers(struct hid_device *hid,
1866 struct hid_report *report, bool use_logical_max)
1868 struct hid_usage *usage;
1869 bool update_needed = false;
1870 bool get_report_completed = false;
1873 if (report->maxfield == 0)
1876 for (i = 0; i < report->maxfield; i++) {
1877 __s32 value = use_logical_max ?
1878 report->field[i]->logical_maximum :
1879 report->field[i]->logical_minimum;
1881 /* There is no good reason for a Resolution
1882 * Multiplier to have a count other than 1.
1885 if (report->field[i]->report_count != 1)
1888 for (j = 0; j < report->field[i]->maxusage; j++) {
1889 usage = &report->field[i]->usage[j];
1891 if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER)
1895 * If we have more than one feature within this
1896 * report we need to fill in the bits from the
1897 * others before we can overwrite the ones for the
1898 * Resolution Multiplier.
1900 * But if we're not allowed to read from the device,
1901 * we just bail. Such a device should not exist
1904 if (!get_report_completed && report->maxfield > 1) {
1905 if (hid->quirks & HID_QUIRK_NO_INIT_REPORTS)
1906 return update_needed;
1908 hid_hw_request(hid, report, HID_REQ_GET_REPORT);
1910 get_report_completed = true;
1913 report->field[i]->value[j] = value;
1914 update_needed = true;
1918 return update_needed;
1921 static void hidinput_change_resolution_multipliers(struct hid_device *hid)
1923 struct hid_report_enum *rep_enum;
1924 struct hid_report *rep;
1927 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1928 list_for_each_entry(rep, &rep_enum->report_list, list) {
1929 bool update_needed = __hidinput_change_resolution_multipliers(hid,
1932 if (update_needed) {
1933 ret = __hid_request(hid, rep, HID_REQ_SET_REPORT);
1935 __hidinput_change_resolution_multipliers(hid,
1942 /* refresh our structs */
1943 hid_setup_resolution_multiplier(hid);
1946 static void report_features(struct hid_device *hid)
1948 struct hid_driver *drv = hid->driver;
1949 struct hid_report_enum *rep_enum;
1950 struct hid_report *rep;
1951 struct hid_usage *usage;
1954 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1955 list_for_each_entry(rep, &rep_enum->report_list, list)
1956 for (i = 0; i < rep->maxfield; i++) {
1957 /* Ignore if report count is out of bounds. */
1958 if (rep->field[i]->report_count < 1)
1961 for (j = 0; j < rep->field[i]->maxusage; j++) {
1962 usage = &rep->field[i]->usage[j];
1964 /* Verify if Battery Strength feature is available */
1965 if (usage->hid == HID_DC_BATTERYSTRENGTH)
1966 hidinput_setup_battery(hid, HID_FEATURE_REPORT,
1967 rep->field[i], false);
1969 if (drv->feature_mapping)
1970 drv->feature_mapping(hid, rep->field[i], usage);
1975 static struct hid_input *hidinput_allocate(struct hid_device *hid,
1976 unsigned int application)
1978 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1979 struct input_dev *input_dev = input_allocate_device();
1980 const char *suffix = NULL;
1981 size_t suffix_len, name_len;
1983 if (!hidinput || !input_dev)
1986 if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) &&
1987 hid->maxapplication > 1) {
1988 switch (application) {
1989 case HID_GD_KEYBOARD:
1990 suffix = "Keyboard";
2000 * yes, there is an issue here:
2001 * DG_PEN -> "Stylus"
2002 * DG_STYLUS -> "Pen"
2003 * But changing this now means users with config snippets
2004 * will have to change it and the test suite will not be happy.
2011 case HID_DG_TOUCHSCREEN:
2012 suffix = "Touchscreen";
2014 case HID_DG_TOUCHPAD:
2015 suffix = "Touchpad";
2017 case HID_GD_SYSTEM_CONTROL:
2018 suffix = "System Control";
2020 case HID_CP_CONSUMER_CONTROL:
2021 suffix = "Consumer Control";
2023 case HID_GD_WIRELESS_RADIO_CTLS:
2024 suffix = "Wireless Radio Control";
2026 case HID_GD_SYSTEM_MULTIAXIS:
2027 suffix = "System Multi Axis";
2035 name_len = strlen(hid->name);
2036 suffix_len = strlen(suffix);
2037 if ((name_len < suffix_len) ||
2038 strcmp(hid->name + name_len - suffix_len, suffix)) {
2039 hidinput->name = kasprintf(GFP_KERNEL, "%s %s",
2041 if (!hidinput->name)
2046 input_set_drvdata(input_dev, hid);
2047 input_dev->event = hidinput_input_event;
2048 input_dev->open = hidinput_open;
2049 input_dev->close = hidinput_close;
2050 input_dev->setkeycode = hidinput_setkeycode;
2051 input_dev->getkeycode = hidinput_getkeycode;
2053 input_dev->name = hidinput->name ? hidinput->name : hid->name;
2054 input_dev->phys = hid->phys;
2055 input_dev->uniq = hid->uniq;
2056 input_dev->id.bustype = hid->bus;
2057 input_dev->id.vendor = hid->vendor;
2058 input_dev->id.product = hid->product;
2059 input_dev->id.version = hid->version;
2060 input_dev->dev.parent = &hid->dev;
2062 hidinput->input = input_dev;
2063 hidinput->application = application;
2064 list_add_tail(&hidinput->list, &hid->inputs);
2066 INIT_LIST_HEAD(&hidinput->reports);
2072 input_free_device(input_dev);
2073 hid_err(hid, "Out of memory during hid input probe\n");
2077 static bool hidinput_has_been_populated(struct hid_input *hidinput)
2080 unsigned long r = 0;
2082 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++)
2083 r |= hidinput->input->evbit[i];
2085 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++)
2086 r |= hidinput->input->keybit[i];
2088 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++)
2089 r |= hidinput->input->relbit[i];
2091 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++)
2092 r |= hidinput->input->absbit[i];
2094 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++)
2095 r |= hidinput->input->mscbit[i];
2097 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++)
2098 r |= hidinput->input->ledbit[i];
2100 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++)
2101 r |= hidinput->input->sndbit[i];
2103 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++)
2104 r |= hidinput->input->ffbit[i];
2106 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++)
2107 r |= hidinput->input->swbit[i];
2112 static void hidinput_cleanup_hidinput(struct hid_device *hid,
2113 struct hid_input *hidinput)
2115 struct hid_report *report;
2118 list_del(&hidinput->list);
2119 input_free_device(hidinput->input);
2120 kfree(hidinput->name);
2122 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
2123 if (k == HID_OUTPUT_REPORT &&
2124 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
2127 list_for_each_entry(report, &hid->report_enum[k].report_list,
2130 for (i = 0; i < report->maxfield; i++)
2131 if (report->field[i]->hidinput == hidinput)
2132 report->field[i]->hidinput = NULL;
2139 static struct hid_input *hidinput_match(struct hid_report *report)
2141 struct hid_device *hid = report->device;
2142 struct hid_input *hidinput;
2144 list_for_each_entry(hidinput, &hid->inputs, list) {
2145 if (hidinput->report &&
2146 hidinput->report->id == report->id)
2153 static struct hid_input *hidinput_match_application(struct hid_report *report)
2155 struct hid_device *hid = report->device;
2156 struct hid_input *hidinput;
2158 list_for_each_entry(hidinput, &hid->inputs, list) {
2159 if (hidinput->application == report->application)
2163 * Keep SystemControl and ConsumerControl applications together
2164 * with the main keyboard, if present.
2166 if ((report->application == HID_GD_SYSTEM_CONTROL ||
2167 report->application == HID_CP_CONSUMER_CONTROL) &&
2168 hidinput->application == HID_GD_KEYBOARD) {
2176 static inline void hidinput_configure_usages(struct hid_input *hidinput,
2177 struct hid_report *report)
2180 int first_field_index = 0;
2181 int slot_collection_index = -1;
2182 int prev_collection_index = -1;
2183 unsigned int slot_idx = 0;
2184 struct hid_field *field;
2187 * First tag all the fields that are part of a slot,
2188 * a slot needs to have one Contact ID in the collection
2190 for (i = 0; i < report->maxfield; i++) {
2191 field = report->field[i];
2193 /* ignore fields without usage */
2194 if (field->maxusage < 1)
2198 * janitoring when collection_index changes
2200 if (prev_collection_index != field->usage->collection_index) {
2201 prev_collection_index = field->usage->collection_index;
2202 first_field_index = i;
2206 * if we already found a Contact ID in the collection,
2207 * tag and continue to the next.
2209 if (slot_collection_index == field->usage->collection_index) {
2210 field->slot_idx = slot_idx;
2214 /* check if the current field has Contact ID */
2215 for (j = 0; j < field->maxusage; j++) {
2216 if (field->usage[j].hid == HID_DG_CONTACTID) {
2217 slot_collection_index = field->usage->collection_index;
2221 * mark all previous fields and this one in the
2222 * current collection to be slotted.
2224 for (k = first_field_index; k <= i; k++)
2225 report->field[k]->slot_idx = slot_idx;
2231 for (i = 0; i < report->maxfield; i++)
2232 for (j = 0; j < report->field[i]->maxusage; j++)
2233 hidinput_configure_usage(hidinput, report->field[i],
2234 report->field[i]->usage + j,
2239 * Register the input device; print a message.
2240 * Configure the input layer interface
2241 * Read all reports and initialize the absolute field values.
2244 int hidinput_connect(struct hid_device *hid, unsigned int force)
2246 struct hid_driver *drv = hid->driver;
2247 struct hid_report *report;
2248 struct hid_input *next, *hidinput = NULL;
2249 unsigned int application;
2252 INIT_LIST_HEAD(&hid->inputs);
2253 INIT_WORK(&hid->led_work, hidinput_led_worker);
2255 hid->status &= ~HID_STAT_DUP_DETECTED;
2258 for (i = 0; i < hid->maxcollection; i++) {
2259 struct hid_collection *col = &hid->collection[i];
2260 if (col->type == HID_COLLECTION_APPLICATION ||
2261 col->type == HID_COLLECTION_PHYSICAL)
2262 if (IS_INPUT_APPLICATION(col->usage))
2266 if (i == hid->maxcollection)
2270 report_features(hid);
2272 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
2273 if (k == HID_OUTPUT_REPORT &&
2274 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
2277 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
2279 if (!report->maxfield)
2282 application = report->application;
2285 * Find the previous hidinput report attached
2286 * to this report id.
2288 if (hid->quirks & HID_QUIRK_MULTI_INPUT)
2289 hidinput = hidinput_match(report);
2290 else if (hid->maxapplication > 1 &&
2291 (hid->quirks & HID_QUIRK_INPUT_PER_APP))
2292 hidinput = hidinput_match_application(report);
2295 hidinput = hidinput_allocate(hid, application);
2300 hidinput_configure_usages(hidinput, report);
2302 if (hid->quirks & HID_QUIRK_MULTI_INPUT)
2303 hidinput->report = report;
2305 list_add_tail(&report->hidinput_list,
2306 &hidinput->reports);
2310 hidinput_change_resolution_multipliers(hid);
2312 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
2313 if (drv->input_configured &&
2314 drv->input_configured(hid, hidinput))
2317 if (!hidinput_has_been_populated(hidinput)) {
2318 /* no need to register an input device not populated */
2319 hidinput_cleanup_hidinput(hid, hidinput);
2323 if (input_register_device(hidinput->input))
2325 hidinput->registered = true;
2328 if (list_empty(&hid->inputs)) {
2329 hid_err(hid, "No inputs registered, leaving\n");
2333 if (hid->status & HID_STAT_DUP_DETECTED)
2335 "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n");
2340 /* unwind the ones we already registered */
2341 hidinput_disconnect(hid);
2345 EXPORT_SYMBOL_GPL(hidinput_connect);
2347 void hidinput_disconnect(struct hid_device *hid)
2349 struct hid_input *hidinput, *next;
2351 hidinput_cleanup_battery(hid);
2353 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
2354 list_del(&hidinput->list);
2355 if (hidinput->registered)
2356 input_unregister_device(hidinput->input);
2358 input_free_device(hidinput->input);
2359 kfree(hidinput->name);
2363 /* led_work is spawned by input_dev callbacks, but doesn't access the
2364 * parent input_dev at all. Once all input devices are removed, we
2365 * know that led_work will never get restarted, so we can cancel it
2366 * synchronously and are safe. */
2367 cancel_work_sync(&hid->led_work);
2369 EXPORT_SYMBOL_GPL(hidinput_disconnect);
2371 #ifdef CONFIG_HID_KUNIT_TEST
2372 #include "hid-input-test.c"