1	// SPDX-License-Identifier: GPL-2.0-or-later
2	/*
3	* Copyright (c) 2000-2001 Vojtech Pavlik
4	* Copyright (c) 2006-2010 Jiri Kosina
5	*
6	* HID to Linux Input mapping
7	*/
8
9	/*
10	*
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
14	*/
15
16	#include <linux/module.h>
17	#include <linux/slab.h>
18	#include <linux/kernel.h>
19
20	#include <linux/hid.h>
21	#include <linux/hid-debug.h>
22
23	#include "hid-ids.h"
24
25	#define unk KEY_UNKNOWN
26
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
44	};
45
46	static const struct {
47	__s32 x;
48	__s32 y;
49	} hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
50
51	struct usage_priority {
52	__u32 usage; /* the HID usage associated */
53	bool global; /* we assume all usages to be slotted,
54	* unless global
55	*/
56	unsigned int slot_overwrite; /* for globals: allows to set the usage
57	* before or after the slots
58	*/
59	};
60
61	/*
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).
66	*
67	* hid-input will then shift the priority by 8 bits to leave some space
68	* in case drivers want to interleave other fields.
69	*
70	* To accommodate slotted devices, the slot priority is
71	* defined in the next 8 bits (defined by 0xff - slot).
72	*
73	* If drivers want to add fields before those, hid-input will
74	* leave out the first 8 bits of the priority value.
75	*
76	* This still leaves us 65535 individual priority values.
77	*/
78	static const struct usage_priority hidinput_usages_priorities[] = {
79	{ /* Eraser (eraser touching) must always come before tipswitch */
80	.usage = HID_DG_ERASER,
81	},
82	{ /* Invert must always come before In Range */
83	.usage = HID_DG_INVERT,
84	},
85	{ /* Is the tip of the tool touching? */
86	.usage = HID_DG_TIPSWITCH,
87	},
88	{ /* Tip Pressure might emulate tip switch */
89	.usage = HID_DG_TIPPRESSURE,
90	},
91	{ /* In Range needs to come after the other tool states */
92	.usage = HID_DG_INRANGE,
93	},
94	};
95
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))
101
102	#define map_abs_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \
103	&max, EV_ABS, (c))
104	#define map_key_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \
105	&max, EV_KEY, (c))
106
107	static bool match_scancode(struct hid_usage *usage,
108	unsigned int cur_idx, unsigned int scancode)
109	{
110	return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode;
111	}
112
113	static bool match_keycode(struct hid_usage *usage,
114	unsigned int cur_idx, unsigned int keycode)
115	{
116	/*
117	* We should exclude unmapped usages when doing lookup by keycode.
118	*/
119	return (usage->type == EV_KEY && usage->code == keycode);
120	}
121
122	static bool match_index(struct hid_usage *usage,
123	unsigned int cur_idx, unsigned int idx)
124	{
125	return cur_idx == idx;
126	}
127
128	typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage,
129	unsigned int cur_idx, unsigned int val);
130
131	static struct hid_usage *hidinput_find_key(struct hid_device *hid,
132	hid_usage_cmp_t match,
133	unsigned int value,
134	unsigned int *usage_idx)
135	{
136	unsigned int i, j, k, cur_idx = 0;
137	struct hid_report *report;
138	struct hid_usage *usage;
139
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)) {
147	if (usage_idx)
148	*usage_idx = cur_idx;
149	return usage;
150	}
151	cur_idx++;
152	}
153	}
154	}
155	}
156	}
157	return NULL;
158	}
159
160	static struct hid_usage *hidinput_locate_usage(struct hid_device *hid,
161	const struct input_keymap_entry *ke,
162	unsigned int *index)
163	{
164	struct hid_usage *usage;
165	unsigned int scancode;
166
167	if (ke->flags & INPUT_KEYMAP_BY_INDEX)
168	usage = hidinput_find_key(hid, match: match_index, value: ke->index, usage_idx: index);
169	else if (input_scancode_to_scalar(ke, scancode: &scancode) == 0)
170	usage = hidinput_find_key(hid, match: match_scancode, value: scancode, usage_idx: index);
171	else
172	usage = NULL;
173
174	return usage;
175	}
176
177	static int hidinput_getkeycode(struct input_dev *dev,
178	struct input_keymap_entry *ke)
179	{
180	struct hid_device *hid = input_get_drvdata(dev);
181	struct hid_usage *usage;
182	unsigned int scancode, index;
183
184	usage = hidinput_locate_usage(hid, ke, index: &index);
185	if (usage) {
186	ke->keycode = usage->type == EV_KEY ?
187	usage->code : KEY_RESERVED;
188	ke->index = index;
189	scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE);
190	ke->len = sizeof(scancode);
191	memcpy(ke->scancode, &scancode, sizeof(scancode));
192	return 0;
193	}
194
195	return -EINVAL;
196	}
197
198	static int hidinput_setkeycode(struct input_dev *dev,
199	const struct input_keymap_entry *ke,
200	unsigned int *old_keycode)
201	{
202	struct hid_device *hid = input_get_drvdata(dev);
203	struct hid_usage *usage;
204
205	usage = hidinput_locate_usage(hid, ke, NULL);
206	if (usage) {
207	*old_keycode = usage->type == EV_KEY ?
208	usage->code : KEY_RESERVED;
209	usage->type = EV_KEY;
210	usage->code = ke->keycode;
211
212	clear_bit(nr: *old_keycode, addr: dev->keybit);
213	set_bit(nr: usage->code, addr: dev->keybit);
214	dbg_hid("Assigned keycode %d to HID usage code %x\n",
215	usage->code, usage->hid);
216
217	/*
218	* Set the keybit for the old keycode if the old keycode is used
219	* by another key
220	*/
221	if (hidinput_find_key(hid, match: match_keycode, value: *old_keycode, NULL))
222	set_bit(nr: *old_keycode, addr: dev->keybit);
223
224	return 0;
225	}
226
227	return -EINVAL;
228	}
229
230
231	/**
232	* hidinput_calc_abs_res - calculate an absolute axis resolution
233	* @field: the HID report field to calculate resolution for
234	* @code: axis code
235	*
236	* The formula is:
237	* (logical_maximum - logical_minimum)
238	* resolution = ----------------------------------------------------------
239	* (physical_maximum - physical_minimum) * 10 ^ unit_exponent
240	*
241	* as seen in the HID specification v1.11 6.2.2.7 Global Items.
242	*
243	* Only exponent 1 length units are processed. Centimeters and inches are
244	* converted to millimeters. Degrees are converted to radians.
245	*/
246	__s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
247	{
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;
253	__s32 prev;
254
255	/* Check if the extents are sane */
256	if (logical_extents <= 0 || physical_extents <= 0)
257	return 0;
258
259	/*
260	* Verify and convert units.
261	* See HID specification v1.11 6.2.2.7 Global Items for unit decoding
262	*/
263	switch (code) {
264	case ABS_X:
265	case ABS_Y:
266	case ABS_Z:
267	case ABS_MT_POSITION_X:
268	case ABS_MT_POSITION_Y:
269	case ABS_MT_TOOL_X:
270	case ABS_MT_TOOL_Y:
271	case ABS_MT_TOUCH_MAJOR:
272	case ABS_MT_TOUCH_MINOR:
273	if (field->unit == 0x11) { /* If centimeters */
274	/* Convert to millimeters */
275	unit_exponent += 1;
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)
281	return 0;
282	unit_exponent -= 1;
283	} else {
284	return 0;
285	}
286	break;
287
288	case ABS_RX:
289	case ABS_RY:
290	case ABS_RZ:
291	case ABS_WHEEL:
292	case ABS_TILT_X:
293	case ABS_TILT_Y:
294	if (field->unit == 0x14) { /* If degrees */
295	/* Convert to radians */
296	prev = logical_extents;
297	logical_extents *= 573;
298	if (logical_extents < prev)
299	return 0;
300	unit_exponent += 1;
301	} else if (field->unit != 0x12) { /* If not radians */
302	return 0;
303	}
304	break;
305
306	case ABS_PRESSURE:
307	case ABS_MT_PRESSURE:
308	if (field->unit == HID_UNIT_NEWTON) {
309	/* Convert to grams, 1 newton is 101.97 grams */
310	prev = physical_extents;
311	physical_extents *= 10197;
312	if (physical_extents < prev)
313	return 0;
314	unit_exponent -= 2;
315	} else if (field->unit != HID_UNIT_GRAM) {
316	return 0;
317	}
318	break;
319	default:
320	return 0;
321	}
322
323	/* Apply negative unit exponent */
324	for (; unit_exponent < 0; unit_exponent++) {
325	prev = logical_extents;
326	logical_extents *= 10;
327	if (logical_extents < prev)
328	return 0;
329	}
330	/* Apply positive unit exponent */
331	for (; unit_exponent > 0; unit_exponent--) {
332	prev = physical_extents;
333	physical_extents *= 10;
334	if (physical_extents < prev)
335	return 0;
336	}
337
338	/* Calculate resolution */
339	return DIV_ROUND_CLOSEST(logical_extents, physical_extents);
340	}
341	EXPORT_SYMBOL_GPL(hidinput_calc_abs_res);
342
343	#ifdef CONFIG_HID_BATTERY_STRENGTH
344	static enum power_supply_property hidinput_battery_props[] = {
345	POWER_SUPPLY_PROP_PRESENT,
346	POWER_SUPPLY_PROP_ONLINE,
347	POWER_SUPPLY_PROP_CAPACITY,
348	POWER_SUPPLY_PROP_MODEL_NAME,
349	POWER_SUPPLY_PROP_STATUS,
350	POWER_SUPPLY_PROP_SCOPE,
351	};
352
353	#define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */
354	#define HID_BATTERY_QUIRK_FEATURE (1 << 1) /* ask for feature report */
355	#define HID_BATTERY_QUIRK_IGNORE (1 << 2) /* completely ignore the battery */
356	#define HID_BATTERY_QUIRK_AVOID_QUERY (1 << 3) /* do not query the battery */
357
358	static const struct hid_device_id hid_battery_quirks[] = {
359	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
360	USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO),
361	HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
362	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
363	USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI),
364	HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
365	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
366	USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI),
367	HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
368	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
369	USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO),
370	HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
371	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
372	USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI),
373	HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
374	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
375	USB_DEVICE_ID_APPLE_MAGICTRACKPAD),
376	HID_BATTERY_QUIRK_IGNORE },
377	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM,
378	USB_DEVICE_ID_ELECOM_BM084),
379	HID_BATTERY_QUIRK_IGNORE },
380	{ HID_USB_DEVICE(USB_VENDOR_ID_SYMBOL,
381	USB_DEVICE_ID_SYMBOL_SCANNER_3),
382	HID_BATTERY_QUIRK_IGNORE },
383	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK,
384	USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD),
385	HID_BATTERY_QUIRK_IGNORE },
386	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH,
387	USB_DEVICE_ID_LOGITECH_DINOVO_EDGE_KBD),
388	HID_BATTERY_QUIRK_IGNORE },
389	{ HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550_TOUCHSCREEN),
390	HID_BATTERY_QUIRK_IGNORE },
391	{ HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550VE_TOUCHSCREEN),
392	HID_BATTERY_QUIRK_IGNORE },
393	{ HID_USB_DEVICE(USB_VENDOR_ID_UGEE, USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_L),
394	HID_BATTERY_QUIRK_AVOID_QUERY },
395	{ HID_USB_DEVICE(USB_VENDOR_ID_UGEE, USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_PRO_MW),
396	HID_BATTERY_QUIRK_AVOID_QUERY },
397	{ HID_USB_DEVICE(USB_VENDOR_ID_UGEE, USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_PRO_SW),
398	HID_BATTERY_QUIRK_AVOID_QUERY },
399	{ HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_CHROMEBOOK_TROGDOR_POMPOM),
400	HID_BATTERY_QUIRK_AVOID_QUERY },
401	/*
402	* Elan HID touchscreens seem to all report a non present battery,
403	* set HID_BATTERY_QUIRK_IGNORE for all Elan I2C and USB HID devices.
404	*/
405	{ HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, HID_ANY_ID), HID_BATTERY_QUIRK_IGNORE },
406	{ HID_USB_DEVICE(USB_VENDOR_ID_ELAN, HID_ANY_ID), HID_BATTERY_QUIRK_IGNORE },
407	{}
408	};
409
410	static unsigned find_battery_quirk(struct hid_device *hdev)
411	{
412	unsigned quirks = 0;
413	const struct hid_device_id *match;
414
415	match = hid_match_id(hdev, id: hid_battery_quirks);
416	if (match != NULL)
417	quirks = match->driver_data;
418
419	return quirks;
420	}
421
422	static int hidinput_scale_battery_capacity(struct hid_device *dev,
423	int value)
424	{
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);
429
430	return value;
431	}
432
433	static int hidinput_query_battery_capacity(struct hid_device *dev)
434	{
435	u8 *buf;
436	int ret;
437
438	buf = kmalloc(4, GFP_KERNEL);
439	if (!buf)
440	return -ENOMEM;
441
442	ret = hid_hw_raw_request(hdev: dev, reportnum: dev->battery_report_id, buf, len: 4,
443	rtype: dev->battery_report_type, reqtype: HID_REQ_GET_REPORT);
444	if (ret < 2) {
445	kfree(objp: buf);
446	return -ENODATA;
447	}
448
449	ret = hidinput_scale_battery_capacity(dev, value: buf[1]);
450	kfree(objp: buf);
451	return ret;
452	}
453
454	static int hidinput_get_battery_property(struct power_supply *psy,
455	enum power_supply_property prop,
456	union power_supply_propval *val)
457	{
458	struct hid_device *dev = power_supply_get_drvdata(psy);
459	int value;
460	int ret = 0;
461
462	switch (prop) {
463	case POWER_SUPPLY_PROP_PRESENT:
464	case POWER_SUPPLY_PROP_ONLINE:
465	val->intval = 1;
466	break;
467
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);
472	if (value < 0)
473	return value;
474	} else {
475	value = dev->battery_capacity;
476	}
477
478	val->intval = value;
479	break;
480
481	case POWER_SUPPLY_PROP_MODEL_NAME:
482	val->strval = dev->name;
483	break;
484
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);
489	if (value < 0)
490	return value;
491
492	dev->battery_capacity = value;
493	dev->battery_status = HID_BATTERY_QUERIED;
494	}
495
496	if (dev->battery_status == HID_BATTERY_UNKNOWN)
497	val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
498	else
499	val->intval = dev->battery_charge_status;
500	break;
501
502	case POWER_SUPPLY_PROP_SCOPE:
503	val->intval = POWER_SUPPLY_SCOPE_DEVICE;
504	break;
505
506	default:
507	ret = -EINVAL;
508	break;
509	}
510
511	return ret;
512	}
513
514	static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
515	struct hid_field *field, bool is_percentage)
516	{
517	struct power_supply_desc *psy_desc;
518	struct power_supply_config psy_cfg = { .drv_data = dev, };
519	unsigned quirks;
520	s32 min, max;
521	int error;
522
523	if (dev->battery)
524	return 0; /* already initialized? */
525
526	quirks = find_battery_quirk(hdev: dev);
527
528	hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
529	dev->bus, dev->vendor, dev->product, dev->version, quirks);
530
531	if (quirks & HID_BATTERY_QUIRK_IGNORE)
532	return 0;
533
534	psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL);
535	if (!psy_desc)
536	return -ENOMEM;
537
538	psy_desc->name = kasprintf(GFP_KERNEL, fmt: "hid-%s-battery",
539	strlen(dev->uniq) ?
540	dev->uniq : dev_name(dev: &dev->dev));
541	if (!psy_desc->name) {
542	error = -ENOMEM;
543	goto err_free_mem;
544	}
545
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;
551
552	min = field->logical_minimum;
553	max = field->logical_maximum;
554
555	if (is_percentage || (quirks & HID_BATTERY_QUIRK_PERCENT)) {
556	min = 0;
557	max = 100;
558	}
559
560	if (quirks & HID_BATTERY_QUIRK_FEATURE)
561	report_type = HID_FEATURE_REPORT;
562
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;
568
569	/*
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.
573	*/
574	dev->battery_avoid_query = report_type == HID_INPUT_REPORT &&
575	field->physical == HID_DG_STYLUS;
576
577	if (quirks & HID_BATTERY_QUIRK_AVOID_QUERY)
578	dev->battery_avoid_query = true;
579
580	dev->battery = power_supply_register(parent: &dev->dev, desc: psy_desc, cfg: &psy_cfg);
581	if (IS_ERR(ptr: dev->battery)) {
582	error = PTR_ERR(ptr: dev->battery);
583	hid_warn(dev, "can't register power supply: %d\n", error);
584	goto err_free_name;
585	}
586
587	power_supply_powers(psy: dev->battery, dev: &dev->dev);
588	return 0;
589
590	err_free_name:
591	kfree(objp: psy_desc->name);
592	err_free_mem:
593	kfree(objp: psy_desc);
594	dev->battery = NULL;
595	return error;
596	}
597
598	static void hidinput_cleanup_battery(struct hid_device *dev)
599	{
600	const struct power_supply_desc *psy_desc;
601
602	if (!dev->battery)
603	return;
604
605	psy_desc = dev->battery->desc;
606	power_supply_unregister(psy: dev->battery);
607	kfree(objp: psy_desc->name);
608	kfree(objp: psy_desc);
609	dev->battery = NULL;
610	}
611
612	static bool hidinput_update_battery_charge_status(struct hid_device *dev,
613	unsigned int usage, int value)
614	{
615	switch (usage) {
616	case HID_BAT_CHARGING:
617	dev->battery_charge_status = value ?
618	POWER_SUPPLY_STATUS_CHARGING :
619	POWER_SUPPLY_STATUS_DISCHARGING;
620	return true;
621	}
622
623	return false;
624	}
625
626	static void hidinput_update_battery(struct hid_device *dev, unsigned int usage,
627	int value)
628	{
629	int capacity;
630
631	if (!dev->battery)
632	return;
633
634	if (hidinput_update_battery_charge_status(dev, usage, value)) {
635	power_supply_changed(psy: dev->battery);
636	return;
637	}
638
639	if ((usage & HID_USAGE_PAGE) == HID_UP_DIGITIZER && value == 0)
640	return;
641
642	if (value < dev->battery_min || value > dev->battery_max)
643	return;
644
645	capacity = hidinput_scale_battery_capacity(dev, value);
646
647	if (dev->battery_status != HID_BATTERY_REPORTED ||
648	capacity != dev->battery_capacity ||
649	ktime_after(cmp1: ktime_get_coarse(), cmp2: dev->battery_ratelimit_time)) {
650	dev->battery_capacity = capacity;
651	dev->battery_status = HID_BATTERY_REPORTED;
652	dev->battery_ratelimit_time =
653	ktime_add_ms(kt: ktime_get_coarse(), msec: 30 * 1000);
654	power_supply_changed(psy: dev->battery);
655	}
656	}
657	#else /* !CONFIG_HID_BATTERY_STRENGTH */
658	static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
659	struct hid_field *field, bool is_percentage)
660	{
661	return 0;
662	}
663
664	static void hidinput_cleanup_battery(struct hid_device *dev)
665	{
666	}
667
668	static void hidinput_update_battery(struct hid_device *dev, unsigned int usage,
669	int value)
670	{
671	}
672	#endif /* CONFIG_HID_BATTERY_STRENGTH */
673
674	static bool hidinput_field_in_collection(struct hid_device *device, struct hid_field *field,
675	unsigned int type, unsigned int usage)
676	{
677	struct hid_collection *collection;
678
679	collection = &device->collection[field->usage->collection_index];
680
681	return collection->type == type && collection->usage == usage;
682	}
683
684	static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
685	struct hid_usage *usage, unsigned int usage_index)
686	{
687	struct input_dev *input = hidinput->input;
688	struct hid_device *device = input_get_drvdata(dev: input);
689	const struct usage_priority *usage_priority = NULL;
690	int max = 0, code;
691	unsigned int i = 0;
692	unsigned long *bit = NULL;
693
694	field->hidinput = hidinput;
695
696	if (field->flags & HID_MAIN_ITEM_CONSTANT)
697	goto ignore;
698
699	/* Ignore if report count is out of bounds. */
700	if (field->report_count < 1)
701	goto ignore;
702
703	/* only LED and HAPTIC usages are supported in output fields */
704	if (field->report_type == HID_OUTPUT_REPORT &&
705	(usage->hid & HID_USAGE_PAGE) != HID_UP_LED &&
706	(usage->hid & HID_USAGE_PAGE) != HID_UP_HAPTIC) {
707	goto ignore;
708	}
709
710	/* assign a priority based on the static list declared here */
711	for (i = 0; i < ARRAY_SIZE(hidinput_usages_priorities); i++) {
712	if (usage->hid == hidinput_usages_priorities[i].usage) {
713	usage_priority = &hidinput_usages_priorities[i];
714
715	field->usages_priorities[usage_index] =
716	(ARRAY_SIZE(hidinput_usages_priorities) - i) << 8;
717	break;
718	}
719	}
720
721	/*
722	* For slotted devices, we need to also add the slot index
723	* in the priority.
724	*/
725	if (usage_priority && usage_priority->global)
726	field->usages_priorities[usage_index] |=
727	usage_priority->slot_overwrite;
728	else
729	field->usages_priorities[usage_index] |=
730	(0xff - field->slot_idx) << 16;
731
732	if (device->driver->input_mapping) {
733	int ret = device->driver->input_mapping(device, hidinput, field,
734	usage, &bit, &max);
735	if (ret > 0)
736	goto mapped;
737	if (ret < 0)
738	goto ignore;
739	}
740
741	switch (usage->hid & HID_USAGE_PAGE) {
742	case HID_UP_UNDEFINED:
743	goto ignore;
744
745	case HID_UP_KEYBOARD:
746	set_bit(EV_REP, addr: input->evbit);
747
748	if ((usage->hid & HID_USAGE) < 256) {
749	if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
750	map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
751	} else
752	map_key(KEY_UNKNOWN);
753
754	break;
755
756	case HID_UP_BUTTON:
757	code = ((usage->hid - 1) & HID_USAGE);
758
759	switch (field->application) {
760	case HID_GD_MOUSE:
761	case HID_GD_POINTER: code += BTN_MOUSE; break;
762	case HID_GD_JOYSTICK:
763	if (code <= 0xf)
764	code += BTN_JOYSTICK;
765	else
766	code += BTN_TRIGGER_HAPPY - 0x10;
767	break;
768	case HID_GD_GAMEPAD:
769	if (code <= 0xf)
770	code += BTN_GAMEPAD;
771	else
772	code += BTN_TRIGGER_HAPPY - 0x10;
773	break;
774	case HID_CP_CONSUMER_CONTROL:
775	if (hidinput_field_in_collection(device, field,
776	HID_COLLECTION_NAMED_ARRAY,
777	HID_CP_PROGRAMMABLEBUTTONS)) {
778	if (code <= 0x1d)
779	code += KEY_MACRO1;
780	else
781	code += BTN_TRIGGER_HAPPY - 0x1e;
782	break;
783	}
784	fallthrough;
785	default:
786	switch (field->physical) {
787	case HID_GD_MOUSE:
788	case HID_GD_POINTER: code += BTN_MOUSE; break;
789	case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
790	case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break;
791	default: code += BTN_MISC;
792	}
793	}
794
795	map_key(code);
796	break;
797
798	case HID_UP_SIMULATION:
799	switch (usage->hid & 0xffff) {
800	case 0xba: map_abs(ABS_RUDDER); break;
801	case 0xbb: map_abs(ABS_THROTTLE); break;
802	case 0xc4: map_abs(ABS_GAS); break;
803	case 0xc5: map_abs(ABS_BRAKE); break;
804	case 0xc8: map_abs(ABS_WHEEL); break;
805	default: goto ignore;
806	}
807	break;
808
809	case HID_UP_GENDESK:
810	if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
811	switch (usage->hid & 0xf) {
812	case 0x1: map_key_clear(KEY_POWER); break;
813	case 0x2: map_key_clear(KEY_SLEEP); break;
814	case 0x3: map_key_clear(KEY_WAKEUP); break;
815	case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
816	case 0x5: map_key_clear(KEY_MENU); break;
817	case 0x6: map_key_clear(KEY_PROG1); break;
818	case 0x7: map_key_clear(KEY_HELP); break;
819	case 0x8: map_key_clear(KEY_EXIT); break;
820	case 0x9: map_key_clear(KEY_SELECT); break;
821	case 0xa: map_key_clear(KEY_RIGHT); break;
822	case 0xb: map_key_clear(KEY_LEFT); break;
823	case 0xc: map_key_clear(KEY_UP); break;
824	case 0xd: map_key_clear(KEY_DOWN); break;
825	case 0xe: map_key_clear(KEY_POWER2); break;
826	case 0xf: map_key_clear(KEY_RESTART); break;
827	default: goto unknown;
828	}
829	break;
830	}
831
832	if ((usage->hid & 0xf0) == 0x90) { /* SystemControl & D-pad */
833	switch (usage->hid) {
834	case HID_GD_UP: usage->hat_dir = 1; break;
835	case HID_GD_DOWN: usage->hat_dir = 5; break;
836	case HID_GD_RIGHT: usage->hat_dir = 3; break;
837	case HID_GD_LEFT: usage->hat_dir = 7; break;
838	case HID_GD_DO_NOT_DISTURB:
839	map_key_clear(KEY_DO_NOT_DISTURB); break;
840	default: goto unknown;
841	}
842
843	if (usage->hid <= HID_GD_LEFT) {
844	if (field->dpad) {
845	map_abs(field->dpad);
846	goto ignore;
847	}
848	map_abs(ABS_HAT0X);
849	}
850	break;
851	}
852
853	if ((usage->hid & 0xf0) == 0xa0) { /* SystemControl */
854	switch (usage->hid & 0xf) {
855	case 0x9: map_key_clear(KEY_MICMUTE); break;
856	case 0xa: map_key_clear(KEY_ACCESSIBILITY); break;
857	default: goto ignore;
858	}
859	break;
860	}
861
862	if ((usage->hid & 0xf0) == 0xb0) { /* SC - Display */
863	switch (usage->hid & 0xf) {
864	case 0x05: map_key_clear(KEY_SWITCHVIDEOMODE); break;
865	default: goto ignore;
866	}
867	break;
868	}
869
870	/*
871	* Some lazy vendors declare 255 usages for System Control,
872	* leading to the creation of ABS_X|Y axis and too many others.
873	* It wouldn't be a problem if joydev doesn't consider the
874	* device as a joystick then.
875	*/
876	if (field->application == HID_GD_SYSTEM_CONTROL)
877	goto ignore;
878
879	switch (usage->hid) {
880	/* These usage IDs map directly to the usage codes. */
881	case HID_GD_X: case HID_GD_Y:
882	case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
883	if (field->flags & HID_MAIN_ITEM_RELATIVE)
884	map_rel(usage->hid & 0xf);
885	else
886	map_abs_clear(usage->hid & 0xf);
887	break;
888
889	case HID_GD_Z:
890	/* HID_GD_Z is mapped to ABS_DISTANCE for stylus/pen */
891	if (field->flags & HID_MAIN_ITEM_RELATIVE) {
892	map_rel(usage->hid & 0xf);
893	} else {
894	if (field->application == HID_DG_PEN ||
895	field->physical == HID_DG_PEN ||
896	field->logical == HID_DG_STYLUS ||
897	field->physical == HID_DG_STYLUS ||
898	field->application == HID_DG_DIGITIZER)
899	map_abs_clear(ABS_DISTANCE);
900	else
901	map_abs_clear(usage->hid & 0xf);
902	}
903	break;
904
905	case HID_GD_WHEEL:
906	if (field->flags & HID_MAIN_ITEM_RELATIVE) {
907	set_bit(REL_WHEEL, addr: input->relbit);
908	map_rel(REL_WHEEL_HI_RES);
909	} else {
910	map_abs(usage->hid & 0xf);
911	}
912	break;
913	case HID_GD_SLIDER: case HID_GD_DIAL:
914	if (field->flags & HID_MAIN_ITEM_RELATIVE)
915	map_rel(usage->hid & 0xf);
916	else
917	map_abs(usage->hid & 0xf);
918	break;
919
920	case HID_GD_HATSWITCH:
921	usage->hat_min = field->logical_minimum;
922	usage->hat_max = field->logical_maximum;
923	map_abs(ABS_HAT0X);
924	break;
925
926	case HID_GD_START: map_key_clear(BTN_START); break;
927	case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
928
929	case HID_GD_RFKILL_BTN:
930	/* MS wireless radio ctl extension, also check CA */
931	if (field->application == HID_GD_WIRELESS_RADIO_CTLS) {
932	map_key_clear(KEY_RFKILL);
933	/* We need to simulate the btn release */
934	field->flags |= HID_MAIN_ITEM_RELATIVE;
935	break;
936	}
937	goto unknown;
938
939	default: goto unknown;
940	}
941
942	break;
943
944	case HID_UP_LED:
945	switch (usage->hid & 0xffff) { /* HID-Value: */
946	case 0x01: map_led (LED_NUML); break; /* "Num Lock" */
947	case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */
948	case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */
949	case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */
950	case 0x05: map_led (LED_KANA); break; /* "Kana" */
951	case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */
952	case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */
953	case 0x09: map_led (LED_MUTE); break; /* "Mute" */
954	case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */
955	case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */
956	case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */
957
958	default: goto ignore;
959	}
960	break;
961
962	case HID_UP_DIGITIZER:
963	if ((field->application & 0xff) == 0x01) /* Digitizer */
964	__set_bit(INPUT_PROP_POINTER, input->propbit);
965	else if ((field->application & 0xff) == 0x02) /* Pen */
966	__set_bit(INPUT_PROP_DIRECT, input->propbit);
967
968	switch (usage->hid & 0xff) {
969	case 0x00: /* Undefined */
970	goto ignore;
971
972	case 0x30: /* TipPressure */
973	if (!test_bit(BTN_TOUCH, input->keybit)) {
974	device->quirks |= HID_QUIRK_NOTOUCH;
975	set_bit(EV_KEY, addr: input->evbit);
976	set_bit(BTN_TOUCH, addr: input->keybit);
977	}
978	map_abs_clear(ABS_PRESSURE);
979	break;
980
981	case 0x32: /* InRange */
982	switch (field->physical) {
983	case HID_DG_PUCK:
984	map_key(BTN_TOOL_MOUSE);
985	break;
986	case HID_DG_FINGER:
987	map_key(BTN_TOOL_FINGER);
988	break;
989	default:
990	/*
991	* If the physical is not given,
992	* rely on the application.
993	*/
994	if (!field->physical) {
995	switch (field->application) {
996	case HID_DG_TOUCHSCREEN:
997	case HID_DG_TOUCHPAD:
998	map_key_clear(BTN_TOOL_FINGER);
999	break;
1000	default:
1001	map_key_clear(BTN_TOOL_PEN);
1002	}
1003	} else {
1004	map_key(BTN_TOOL_PEN);
1005	}
1006	break;
1007	}
1008	break;
1009
1010	case 0x3b: /* Battery Strength */
1011	hidinput_setup_battery(dev: device, report_type: HID_INPUT_REPORT, field, is_percentage: false);
1012	usage->type = EV_PWR;
1013	return;
1014
1015	case 0x3c: /* Invert */
1016	device->quirks &= ~HID_QUIRK_NOINVERT;
1017	map_key_clear(BTN_TOOL_RUBBER);
1018	break;
1019
1020	case 0x3d: /* X Tilt */
1021	map_abs_clear(ABS_TILT_X);
1022	break;
1023
1024	case 0x3e: /* Y Tilt */
1025	map_abs_clear(ABS_TILT_Y);
1026	break;
1027
1028	case 0x33: /* Touch */
1029	case 0x42: /* TipSwitch */
1030	case 0x43: /* TipSwitch2 */
1031	device->quirks &= ~HID_QUIRK_NOTOUCH;
1032	map_key_clear(BTN_TOUCH);
1033	break;
1034
1035	case 0x44: /* BarrelSwitch */
1036	map_key_clear(BTN_STYLUS);
1037	break;
1038
1039	case 0x45: /* ERASER */
1040	/*
1041	* This event is reported when eraser tip touches the surface.
1042	* Actual eraser (BTN_TOOL_RUBBER) is set and released either
1043	* by Invert if tool reports proximity or by Eraser directly.
1044	*/
1045	if (!test_bit(BTN_TOOL_RUBBER, input->keybit)) {
1046	device->quirks |= HID_QUIRK_NOINVERT;
1047	set_bit(BTN_TOOL_RUBBER, addr: input->keybit);
1048	}
1049	map_key_clear(BTN_TOUCH);
1050	break;
1051
1052	case 0x46: /* TabletPick */
1053	case 0x5a: /* SecondaryBarrelSwitch */
1054	map_key_clear(BTN_STYLUS2);
1055	break;
1056
1057	case 0x5b: /* TransducerSerialNumber */
1058	case 0x6e: /* TransducerSerialNumber2 */
1059	map_msc(MSC_SERIAL);
1060	break;
1061
1062	default: goto unknown;
1063	}
1064	break;
1065
1066	case HID_UP_TELEPHONY:
1067	switch (usage->hid & HID_USAGE) {
1068	case 0x2f: map_key_clear(KEY_MICMUTE); break;
1069	case 0xb0: map_key_clear(KEY_NUMERIC_0); break;
1070	case 0xb1: map_key_clear(KEY_NUMERIC_1); break;
1071	case 0xb2: map_key_clear(KEY_NUMERIC_2); break;
1072	case 0xb3: map_key_clear(KEY_NUMERIC_3); break;
1073	case 0xb4: map_key_clear(KEY_NUMERIC_4); break;
1074	case 0xb5: map_key_clear(KEY_NUMERIC_5); break;
1075	case 0xb6: map_key_clear(KEY_NUMERIC_6); break;
1076	case 0xb7: map_key_clear(KEY_NUMERIC_7); break;
1077	case 0xb8: map_key_clear(KEY_NUMERIC_8); break;
1078	case 0xb9: map_key_clear(KEY_NUMERIC_9); break;
1079	case 0xba: map_key_clear(KEY_NUMERIC_STAR); break;
1080	case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break;
1081	case 0xbc: map_key_clear(KEY_NUMERIC_A); break;
1082	case 0xbd: map_key_clear(KEY_NUMERIC_B); break;
1083	case 0xbe: map_key_clear(KEY_NUMERIC_C); break;
1084	case 0xbf: map_key_clear(KEY_NUMERIC_D); break;
1085	default: goto ignore;
1086	}
1087	break;
1088
1089	case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */
1090	switch (usage->hid & HID_USAGE) {
1091	case 0x000: goto ignore;
1092	case 0x030: map_key_clear(KEY_POWER); break;
1093	case 0x031: map_key_clear(KEY_RESTART); break;
1094	case 0x032: map_key_clear(KEY_SLEEP); break;
1095	case 0x034: map_key_clear(KEY_SLEEP); break;
1096	case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break;
1097	case 0x036: map_key_clear(BTN_MISC); break;
1098
1099	case 0x040: map_key_clear(KEY_MENU); break; /* Menu */
1100	case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */
1101	case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */
1102	case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */
1103	case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */
1104	case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */
1105	case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */
1106	case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */
1107	case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */
1108
1109	case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */
1110	case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */
1111	case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */
1112	case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */
1113	case 0x069: map_key_clear(KEY_RED); break;
1114	case 0x06a: map_key_clear(KEY_GREEN); break;
1115	case 0x06b: map_key_clear(KEY_BLUE); break;
1116	case 0x06c: map_key_clear(KEY_YELLOW); break;
1117	case 0x06d: map_key_clear(KEY_ASPECT_RATIO); break;
1118
1119	case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break;
1120	case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break;
1121	case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break;
1122	case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break;
1123	case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break;
1124	case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break;
1125
1126	case 0x076: map_key_clear(KEY_CAMERA_ACCESS_ENABLE); break;
1127	case 0x077: map_key_clear(KEY_CAMERA_ACCESS_DISABLE); break;
1128	case 0x078: map_key_clear(KEY_CAMERA_ACCESS_TOGGLE); break;
1129
1130	case 0x079: map_key_clear(KEY_KBDILLUMUP); break;
1131	case 0x07a: map_key_clear(KEY_KBDILLUMDOWN); break;
1132	case 0x07c: map_key_clear(KEY_KBDILLUMTOGGLE); break;
1133
1134	case 0x082: map_key_clear(KEY_VIDEO_NEXT); break;
1135	case 0x083: map_key_clear(KEY_LAST); break;
1136	case 0x084: map_key_clear(KEY_ENTER); break;
1137	case 0x088: map_key_clear(KEY_PC); break;
1138	case 0x089: map_key_clear(KEY_TV); break;
1139	case 0x08a: map_key_clear(KEY_WWW); break;
1140	case 0x08b: map_key_clear(KEY_DVD); break;
1141	case 0x08c: map_key_clear(KEY_PHONE); break;
1142	case 0x08d: map_key_clear(KEY_PROGRAM); break;
1143	case 0x08e: map_key_clear(KEY_VIDEOPHONE); break;
1144	case 0x08f: map_key_clear(KEY_GAMES); break;
1145	case 0x090: map_key_clear(KEY_MEMO); break;
1146	case 0x091: map_key_clear(KEY_CD); break;
1147	case 0x092: map_key_clear(KEY_VCR); break;
1148	case 0x093: map_key_clear(KEY_TUNER); break;
1149	case 0x094: map_key_clear(KEY_EXIT); break;
1150	case 0x095: map_key_clear(KEY_HELP); break;
1151	case 0x096: map_key_clear(KEY_TAPE); break;
1152	case 0x097: map_key_clear(KEY_TV2); break;
1153	case 0x098: map_key_clear(KEY_SAT); break;
1154	case 0x09a: map_key_clear(KEY_PVR); break;
1155
1156	case 0x09c: map_key_clear(KEY_CHANNELUP); break;
1157	case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
1158	case 0x0a0: map_key_clear(KEY_VCR2); break;
1159
1160	case 0x0b0: map_key_clear(KEY_PLAY); break;
1161	case 0x0b1: map_key_clear(KEY_PAUSE); break;
1162	case 0x0b2: map_key_clear(KEY_RECORD); break;
1163	case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
1164	case 0x0b4: map_key_clear(KEY_REWIND); break;
1165	case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
1166	case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
1167	case 0x0b7: map_key_clear(KEY_STOPCD); break;
1168	case 0x0b8: map_key_clear(KEY_EJECTCD); break;
1169	case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break;
1170	case 0x0b9: map_key_clear(KEY_SHUFFLE); break;
1171	case 0x0bf: map_key_clear(KEY_SLOW); break;
1172
1173	case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
1174	case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break;
1175
1176	case 0x0d8: map_key_clear(KEY_DICTATE); break;
1177	case 0x0d9: map_key_clear(KEY_EMOJI_PICKER); break;
1178
1179	case 0x0e0: map_abs_clear(ABS_VOLUME); break;
1180	case 0x0e2: map_key_clear(KEY_MUTE); break;
1181	case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
1182	case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
1183	case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
1184	case 0x0f5: map_key_clear(KEY_SLOW); break;
1185
1186	case 0x181: map_key_clear(KEY_BUTTONCONFIG); break;
1187	case 0x182: map_key_clear(KEY_BOOKMARKS); break;
1188	case 0x183: map_key_clear(KEY_CONFIG); break;
1189	case 0x184: map_key_clear(KEY_WORDPROCESSOR); break;
1190	case 0x185: map_key_clear(KEY_EDITOR); break;
1191	case 0x186: map_key_clear(KEY_SPREADSHEET); break;
1192	case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break;
1193	case 0x188: map_key_clear(KEY_PRESENTATION); break;
1194	case 0x189: map_key_clear(KEY_DATABASE); break;
1195	case 0x18a: map_key_clear(KEY_MAIL); break;
1196	case 0x18b: map_key_clear(KEY_NEWS); break;
1197	case 0x18c: map_key_clear(KEY_VOICEMAIL); break;
1198	case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break;
1199	case 0x18e: map_key_clear(KEY_CALENDAR); break;
1200	case 0x18f: map_key_clear(KEY_TASKMANAGER); break;
1201	case 0x190: map_key_clear(KEY_JOURNAL); break;
1202	case 0x191: map_key_clear(KEY_FINANCE); break;
1203	case 0x192: map_key_clear(KEY_CALC); break;
1204	case 0x193: map_key_clear(KEY_PLAYER); break;
1205	case 0x194: map_key_clear(KEY_FILE); break;
1206	case 0x196: map_key_clear(KEY_WWW); break;
1207	case 0x199: map_key_clear(KEY_CHAT); break;
1208	case 0x19c: map_key_clear(KEY_LOGOFF); break;
1209	case 0x19e: map_key_clear(KEY_COFFEE); break;
1210	case 0x19f: map_key_clear(KEY_CONTROLPANEL); break;
1211	case 0x1a2: map_key_clear(KEY_APPSELECT); break;
1212	case 0x1a3: map_key_clear(KEY_NEXT); break;
1213	case 0x1a4: map_key_clear(KEY_PREVIOUS); break;
1214	case 0x1a6: map_key_clear(KEY_HELP); break;
1215	case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
1216	case 0x1ab: map_key_clear(KEY_SPELLCHECK); break;
1217	case 0x1ae: map_key_clear(KEY_KEYBOARD); break;
1218	case 0x1b1: map_key_clear(KEY_SCREENSAVER); break;
1219	case 0x1b4: map_key_clear(KEY_FILE); break;
1220	case 0x1b6: map_key_clear(KEY_IMAGES); break;
1221	case 0x1b7: map_key_clear(KEY_AUDIO); break;
1222	case 0x1b8: map_key_clear(KEY_VIDEO); break;
1223	case 0x1bc: map_key_clear(KEY_MESSENGER); break;
1224	case 0x1bd: map_key_clear(KEY_INFO); break;
1225	case 0x1cb: map_key_clear(KEY_ASSISTANT); break;
1226	case 0x201: map_key_clear(KEY_NEW); break;
1227	case 0x202: map_key_clear(KEY_OPEN); break;
1228	case 0x203: map_key_clear(KEY_CLOSE); break;
1229	case 0x204: map_key_clear(KEY_EXIT); break;
1230	case 0x207: map_key_clear(KEY_SAVE); break;
1231	case 0x208: map_key_clear(KEY_PRINT); break;
1232	case 0x209: map_key_clear(KEY_PROPS); break;
1233	case 0x21a: map_key_clear(KEY_UNDO); break;
1234	case 0x21b: map_key_clear(KEY_COPY); break;
1235	case 0x21c: map_key_clear(KEY_CUT); break;
1236	case 0x21d: map_key_clear(KEY_PASTE); break;
1237	case 0x21f: map_key_clear(KEY_FIND); break;
1238	case 0x221: map_key_clear(KEY_SEARCH); break;
1239	case 0x222: map_key_clear(KEY_GOTO); break;
1240	case 0x223: map_key_clear(KEY_HOMEPAGE); break;
1241	case 0x224: map_key_clear(KEY_BACK); break;
1242	case 0x225: map_key_clear(KEY_FORWARD); break;
1243	case 0x226: map_key_clear(KEY_STOP); break;
1244	case 0x227: map_key_clear(KEY_REFRESH); break;
1245	case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
1246	case 0x22d: map_key_clear(KEY_ZOOMIN); break;
1247	case 0x22e: map_key_clear(KEY_ZOOMOUT); break;
1248	case 0x22f: map_key_clear(KEY_ZOOMRESET); break;
1249	case 0x232: map_key_clear(KEY_FULL_SCREEN); break;
1250	case 0x233: map_key_clear(KEY_SCROLLUP); break;
1251	case 0x234: map_key_clear(KEY_SCROLLDOWN); break;
1252	case 0x238: /* AC Pan */
1253	set_bit(REL_HWHEEL, addr: input->relbit);
1254	map_rel(REL_HWHEEL_HI_RES);
1255	break;
1256	case 0x23d: map_key_clear(KEY_EDIT); break;
1257	case 0x25f: map_key_clear(KEY_CANCEL); break;
1258	case 0x269: map_key_clear(KEY_INSERT); break;
1259	case 0x26a: map_key_clear(KEY_DELETE); break;
1260	case 0x279: map_key_clear(KEY_REDO); break;
1261
1262	case 0x289: map_key_clear(KEY_REPLY); break;
1263	case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
1264	case 0x28c: map_key_clear(KEY_SEND); break;
1265
1266	case 0x29d: map_key_clear(KEY_KBD_LAYOUT_NEXT); break;
1267
1268	case 0x2a2: map_key_clear(KEY_ALL_APPLICATIONS); break;
1269
1270	case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break;
1271	case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break;
1272	case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break;
1273	case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break;
1274	case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break;
1275	case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break;
1276
1277	case 0x29f: map_key_clear(KEY_SCALE); break;
1278
1279	default: map_key_clear(KEY_UNKNOWN);
1280	}
1281	break;
1282
1283	case HID_UP_GENDEVCTRLS:
1284	switch (usage->hid) {
1285	case HID_DC_BATTERYSTRENGTH:
1286	hidinput_setup_battery(dev: device, report_type: HID_INPUT_REPORT, field, is_percentage: false);
1287	usage->type = EV_PWR;
1288	return;
1289	}
1290	goto unknown;
1291
1292	case HID_UP_BATTERY:
1293	switch (usage->hid) {
1294	case HID_BAT_ABSOLUTESTATEOFCHARGE:
1295	hidinput_setup_battery(dev: device, report_type: HID_INPUT_REPORT, field, is_percentage: true);
1296	usage->type = EV_PWR;
1297	return;
1298	case HID_BAT_CHARGING:
1299	usage->type = EV_PWR;
1300	return;
1301	}
1302	goto unknown;
1303	case HID_UP_CAMERA:
1304	switch (usage->hid & HID_USAGE) {
1305	case 0x020:
1306	map_key_clear(KEY_CAMERA_FOCUS); break;
1307	case 0x021:
1308	map_key_clear(KEY_CAMERA); break;
1309	default:
1310	goto ignore;
1311	}
1312	break;
1313
1314	case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
1315	set_bit(EV_REP, addr: input->evbit);
1316	switch (usage->hid & HID_USAGE) {
1317	case 0x021: map_key_clear(KEY_PRINT); break;
1318	case 0x070: map_key_clear(KEY_HP); break;
1319	case 0x071: map_key_clear(KEY_CAMERA); break;
1320	case 0x072: map_key_clear(KEY_SOUND); break;
1321	case 0x073: map_key_clear(KEY_QUESTION); break;
1322	case 0x080: map_key_clear(KEY_EMAIL); break;
1323	case 0x081: map_key_clear(KEY_CHAT); break;
1324	case 0x082: map_key_clear(KEY_SEARCH); break;
1325	case 0x083: map_key_clear(KEY_CONNECT); break;
1326	case 0x084: map_key_clear(KEY_FINANCE); break;
1327	case 0x085: map_key_clear(KEY_SPORT); break;
1328	case 0x086: map_key_clear(KEY_SHOP); break;
1329	default: goto ignore;
1330	}
1331	break;
1332
1333	case HID_UP_HPVENDOR2:
1334	set_bit(EV_REP, addr: input->evbit);
1335	switch (usage->hid & HID_USAGE) {
1336	case 0x001: map_key_clear(KEY_MICMUTE); break;
1337	case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break;
1338	case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break;
1339	default: goto ignore;
1340	}
1341	break;
1342
1343	case HID_UP_MSVENDOR:
1344	goto ignore;
1345
1346	case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
1347	set_bit(EV_REP, addr: input->evbit);
1348	goto ignore;
1349
1350	case HID_UP_LOGIVENDOR:
1351	/* intentional fallback */
1352	case HID_UP_LOGIVENDOR2:
1353	/* intentional fallback */
1354	case HID_UP_LOGIVENDOR3:
1355	goto ignore;
1356
1357	case HID_UP_PID:
1358	switch (usage->hid & HID_USAGE) {
1359	case 0xa4: map_key_clear(BTN_DEAD); break;
1360	default: goto ignore;
1361	}
1362	break;
1363
1364	default:
1365	unknown:
1366	if (field->report_size == 1) {
1367	if (field->report->type == HID_OUTPUT_REPORT) {
1368	map_led(LED_MISC);
1369	break;
1370	}
1371	map_key(BTN_MISC);
1372	break;
1373	}
1374	if (field->flags & HID_MAIN_ITEM_RELATIVE) {
1375	map_rel(REL_MISC);
1376	break;
1377	}
1378	map_abs(ABS_MISC);
1379	break;
1380	}
1381
1382	mapped:
1383	/* Mapping failed, bail out */
1384	if (!bit)
1385	return;
1386
1387	if (device->driver->input_mapped &&
1388	device->driver->input_mapped(device, hidinput, field, usage,
1389	&bit, &max) < 0) {
1390	/*
1391	* The driver indicated that no further generic handling
1392	* of the usage is desired.
1393	*/
1394	return;
1395	}
1396
1397	set_bit(nr: usage->type, addr: input->evbit);
1398
1399	/*
1400	* This part is *really* controversial:
1401	* - HID aims at being generic so we should do our best to export
1402	* all incoming events
1403	* - HID describes what events are, so there is no reason for ABS_X
1404	* to be mapped to ABS_Y
1405	* - HID is using *_MISC+N as a default value, but nothing prevents
1406	* *_MISC+N to overwrite a legitimate even, which confuses userspace
1407	* (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different
1408	* processing)
1409	*
1410	* If devices still want to use this (at their own risk), they will
1411	* have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but
1412	* the default should be a reliable mapping.
1413	*/
1414	while (usage->code <= max && test_and_set_bit(nr: usage->code, addr: bit)) {
1415	if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) {
1416	usage->code = find_next_zero_bit(addr: bit,
1417	size: max + 1,
1418	offset: usage->code);
1419	} else {
1420	device->status |= HID_STAT_DUP_DETECTED;
1421	goto ignore;
1422	}
1423	}
1424
1425	if (usage->code > max)
1426	goto ignore;
1427
1428	if (usage->type == EV_ABS) {
1429
1430	int a = field->logical_minimum;
1431	int b = field->logical_maximum;
1432
1433	if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
1434	a = field->logical_minimum = 0;
1435	b = field->logical_maximum = 255;
1436	}
1437
1438	if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
1439	input_set_abs_params(dev: input, axis: usage->code, min: a, max: b, fuzz: (b - a) >> 8, flat: (b - a) >> 4);
1440	else input_set_abs_params(dev: input, axis: usage->code, min: a, max: b, fuzz: 0, flat: 0);
1441
1442	input_abs_set_res(dev: input, axis: usage->code,
1443	val: hidinput_calc_abs_res(field, usage->code));
1444
1445	/* use a larger default input buffer for MT devices */
1446	if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
1447	input_set_events_per_packet(dev: input, n_events: 60);
1448	}
1449
1450	if (usage->type == EV_ABS &&
1451	(usage->hat_min < usage->hat_max || usage->hat_dir)) {
1452	int i;
1453	for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
1454	input_set_abs_params(dev: input, axis: i, min: -1, max: 1, fuzz: 0, flat: 0);
1455	set_bit(nr: i, addr: input->absbit);
1456	}
1457	if (usage->hat_dir && !field->dpad)
1458	field->dpad = usage->code;
1459	}
1460
1461	/* for those devices which produce Consumer volume usage as relative,
1462	* we emulate pressing volumeup/volumedown appropriate number of times
1463	* in hidinput_hid_event()
1464	*/
1465	if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1466	(usage->code == ABS_VOLUME)) {
1467	set_bit(KEY_VOLUMEUP, addr: input->keybit);
1468	set_bit(KEY_VOLUMEDOWN, addr: input->keybit);
1469	}
1470
1471	if (usage->type == EV_KEY) {
1472	set_bit(EV_MSC, addr: input->evbit);
1473	set_bit(MSC_SCAN, addr: input->mscbit);
1474	}
1475
1476	return;
1477
1478	ignore:
1479	usage->type = 0;
1480	usage->code = 0;
1481	}
1482
1483	static void hidinput_handle_scroll(struct hid_usage *usage,
1484	struct input_dev *input,
1485	__s32 value)
1486	{
1487	int code;
1488	int hi_res, lo_res;
1489
1490	if (value == 0)
1491	return;
1492
1493	if (usage->code == REL_WHEEL_HI_RES)
1494	code = REL_WHEEL;
1495	else
1496	code = REL_HWHEEL;
1497
1498	/*
1499	* Windows reports one wheel click as value 120. Where a high-res
1500	* scroll wheel is present, a fraction of 120 is reported instead.
1501	* Our REL_WHEEL_HI_RES axis does the same because all HW must
1502	* adhere to the 120 expectation.
1503	*/
1504	hi_res = value * 120/usage->resolution_multiplier;
1505
1506	usage->wheel_accumulated += hi_res;
1507	lo_res = usage->wheel_accumulated/120;
1508	if (lo_res)
1509	usage->wheel_accumulated -= lo_res * 120;
1510
1511	input_event(dev: input, EV_REL, code, value: lo_res);
1512	input_event(dev: input, EV_REL, code: usage->code, value: hi_res);
1513	}
1514
1515	static void hid_report_release_tool(struct hid_report *report, struct input_dev *input,
1516	unsigned int tool)
1517	{
1518	/* if the given tool is not currently reported, ignore */
1519	if (!test_bit(tool, input->key))
1520	return;
1521
1522	/*
1523	* if the given tool was previously set, release it,
1524	* release any TOUCH and send an EV_SYN
1525	*/
1526	input_event(dev: input, EV_KEY, BTN_TOUCH, value: 0);
1527	input_event(dev: input, EV_KEY, code: tool, value: 0);
1528	input_event(dev: input, EV_SYN, SYN_REPORT, value: 0);
1529
1530	report->tool = 0;
1531	}
1532
1533	static void hid_report_set_tool(struct hid_report *report, struct input_dev *input,
1534	unsigned int new_tool)
1535	{
1536	if (report->tool != new_tool)
1537	hid_report_release_tool(report, input, tool: report->tool);
1538
1539	input_event(dev: input, EV_KEY, code: new_tool, value: 1);
1540	report->tool = new_tool;
1541	}
1542
1543	void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
1544	{
1545	struct input_dev *input;
1546	struct hid_report *report = field->report;
1547	unsigned *quirks = &hid->quirks;
1548
1549	if (!usage->type)
1550	return;
1551
1552	if (usage->type == EV_PWR) {
1553	hidinput_update_battery(dev: hid, usage: usage->hid, value);
1554	return;
1555	}
1556
1557	if (!field->hidinput)
1558	return;
1559
1560	input = field->hidinput->input;
1561
1562	if (usage->hat_min < usage->hat_max || usage->hat_dir) {
1563	int hat_dir = usage->hat_dir;
1564	if (!hat_dir)
1565	hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
1566	if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
1567	input_event(dev: input, type: usage->type, code: usage->code , value: hid_hat_to_axis[hat_dir].x);
1568	input_event(dev: input, type: usage->type, code: usage->code + 1, value: hid_hat_to_axis[hat_dir].y);
1569	return;
1570	}
1571
1572	/*
1573	* Ignore out-of-range values as per HID specification,
1574	* section 5.10 and 6.2.25, when NULL state bit is present.
1575	* When it's not, clamp the value to match Microsoft's input
1576	* driver as mentioned in "Required HID usages for digitizers":
1577	* https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp
1578	*
1579	* The logical_minimum < logical_maximum check is done so that we
1580	* don't unintentionally discard values sent by devices which
1581	* don't specify logical min and max.
1582	*/
1583	if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
1584	field->logical_minimum < field->logical_maximum) {
1585	if (field->flags & HID_MAIN_ITEM_NULL_STATE &&
1586	(value < field->logical_minimum ||
1587	value > field->logical_maximum)) {
1588	dbg_hid("Ignoring out-of-range value %x\n", value);
1589	return;
1590	}
1591	value = clamp(value,
1592	field->logical_minimum,
1593	field->logical_maximum);
1594	}
1595
1596	switch (usage->hid) {
1597	case HID_DG_ERASER:
1598	report->tool_active |= !!value;
1599
1600	/*
1601	* if eraser is set, we must enforce BTN_TOOL_RUBBER
1602	* to accommodate for devices not following the spec.
1603	*/
1604	if (value)
1605	hid_report_set_tool(report, input, BTN_TOOL_RUBBER);
1606	else if (report->tool != BTN_TOOL_RUBBER)
1607	/* value is off, tool is not rubber, ignore */
1608	return;
1609	else if (*quirks & HID_QUIRK_NOINVERT &&
1610	!test_bit(BTN_TOUCH, input->key)) {
1611	/*
1612	* There is no invert to release the tool, let hid_input
1613	* send BTN_TOUCH with scancode and release the tool after.
1614	*/
1615	hid_report_release_tool(report, input, BTN_TOOL_RUBBER);
1616	return;
1617	}
1618
1619	/* let hid-input set BTN_TOUCH */
1620	break;
1621
1622	case HID_DG_INVERT:
1623	report->tool_active |= !!value;
1624
1625	/*
1626	* If invert is set, we store BTN_TOOL_RUBBER.
1627	*/
1628	if (value)
1629	hid_report_set_tool(report, input, BTN_TOOL_RUBBER);
1630	else if (!report->tool_active)
1631	/* tool_active not set means Invert and Eraser are not set */
1632	hid_report_release_tool(report, input, BTN_TOOL_RUBBER);
1633
1634	/* no further processing */
1635	return;
1636
1637	case HID_DG_INRANGE:
1638	report->tool_active |= !!value;
1639
1640	if (report->tool_active) {
1641	/*
1642	* if tool is not set but is marked as active,
1643	* assume ours
1644	*/
1645	if (!report->tool)
1646	report->tool = usage->code;
1647
1648	/* drivers may have changed the value behind our back, resend it */
1649	hid_report_set_tool(report, input, new_tool: report->tool);
1650	} else {
1651	hid_report_release_tool(report, input, tool: usage->code);
1652	}
1653
1654	/* reset tool_active for the next event */
1655	report->tool_active = false;
1656
1657	/* no further processing */
1658	return;
1659
1660	case HID_DG_TIPSWITCH:
1661	report->tool_active |= !!value;
1662
1663	/* if tool is set to RUBBER we should ignore the current value */
1664	if (report->tool == BTN_TOOL_RUBBER)
1665	return;
1666
1667	break;
1668
1669	case HID_DG_TIPPRESSURE:
1670	if (*quirks & HID_QUIRK_NOTOUCH) {
1671	int a = field->logical_minimum;
1672	int b = field->logical_maximum;
1673
1674	if (value > a + ((b - a) >> 3)) {
1675	input_event(dev: input, EV_KEY, BTN_TOUCH, value: 1);
1676	report->tool_active = true;
1677	}
1678	}
1679	break;
1680
1681	case HID_UP_PID | 0x83UL: /* Simultaneous Effects Max */
1682	dbg_hid("Maximum Effects - %d\n",value);
1683	return;
1684
1685	case HID_UP_PID | 0x7fUL:
1686	dbg_hid("PID Pool Report\n");
1687	return;
1688	}
1689
1690	switch (usage->type) {
1691	case EV_KEY:
1692	if (usage->code == 0) /* Key 0 is "unassigned", not KEY_UNKNOWN */
1693	return;
1694	break;
1695
1696	case EV_REL:
1697	if (usage->code == REL_WHEEL_HI_RES ||
1698	usage->code == REL_HWHEEL_HI_RES) {
1699	hidinput_handle_scroll(usage, input, value);
1700	return;
1701	}
1702	break;
1703
1704	case EV_ABS:
1705	if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
1706	usage->code == ABS_VOLUME) {
1707	int count = abs(value);
1708	int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
1709	int i;
1710
1711	for (i = 0; i < count; i++) {
1712	input_event(dev: input, EV_KEY, code: direction, value: 1);
1713	input_sync(dev: input);
1714	input_event(dev: input, EV_KEY, code: direction, value: 0);
1715	input_sync(dev: input);
1716	}
1717	return;
1718
1719	} else if (((*quirks & HID_QUIRK_X_INVERT) && usage->code == ABS_X) ||
1720	((*quirks & HID_QUIRK_Y_INVERT) && usage->code == ABS_Y))
1721	value = field->logical_maximum - value;
1722	break;
1723	}
1724
1725	/*
1726	* Ignore reports for absolute data if the data didn't change. This is
1727	* not only an optimization but also fixes 'dead' key reports. Some
1728	* RollOver implementations for localized keys (like BACKSLASH/PIPE; HID
1729	* 0x31 and 0x32) report multiple keys, even though a localized keyboard
1730	* can only have one of them physically available. The 'dead' keys
1731	* report constant 0. As all map to the same keycode, they'd confuse
1732	* the input layer. If we filter the 'dead' keys on the HID level, we
1733	* skip the keycode translation and only forward real events.
1734	*/
1735	if (!(field->flags & (HID_MAIN_ITEM_RELATIVE |
1736	HID_MAIN_ITEM_BUFFERED_BYTE)) &&
1737	(field->flags & HID_MAIN_ITEM_VARIABLE) &&
1738	usage->usage_index < field->maxusage &&
1739	value == field->value[usage->usage_index])
1740	return;
1741
1742	/* report the usage code as scancode if the key status has changed */
1743	if (usage->type == EV_KEY &&
1744	(!test_bit(usage->code, input->key)) == value)
1745	input_event(dev: input, EV_MSC, MSC_SCAN, value: usage->hid);
1746
1747	input_event(dev: input, type: usage->type, code: usage->code, value);
1748
1749	if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
1750	usage->type == EV_KEY && value) {
1751	input_sync(dev: input);
1752	input_event(dev: input, type: usage->type, code: usage->code, value: 0);
1753	}
1754	}
1755
1756	void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1757	{
1758	struct hid_input *hidinput;
1759
1760	if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1761	return;
1762
1763	list_for_each_entry(hidinput, &hid->inputs, list)
1764	input_sync(dev: hidinput->input);
1765	}
1766	EXPORT_SYMBOL_GPL(hidinput_report_event);
1767
1768	static int hidinput_find_field(struct hid_device *hid, unsigned int type,
1769	unsigned int code, struct hid_field **field)
1770	{
1771	struct hid_report *report;
1772	int i, j;
1773
1774	list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1775	for (i = 0; i < report->maxfield; i++) {
1776	*field = report->field[i];
1777	for (j = 0; j < (*field)->maxusage; j++)
1778	if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1779	return j;
1780	}
1781	}
1782	return -1;
1783	}
1784
1785	struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1786	{
1787	struct hid_report *report;
1788	struct hid_field *field;
1789	int i, j;
1790
1791	list_for_each_entry(report,
1792	&hid->report_enum[HID_OUTPUT_REPORT].report_list,
1793	list) {
1794	for (i = 0; i < report->maxfield; i++) {
1795	field = report->field[i];
1796	for (j = 0; j < field->maxusage; j++)
1797	if (field->usage[j].type == EV_LED)
1798	return field;
1799	}
1800	}
1801	return NULL;
1802	}
1803	EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1804
1805	unsigned int hidinput_count_leds(struct hid_device *hid)
1806	{
1807	struct hid_report *report;
1808	struct hid_field *field;
1809	int i, j;
1810	unsigned int count = 0;
1811
1812	list_for_each_entry(report,
1813	&hid->report_enum[HID_OUTPUT_REPORT].report_list,
1814	list) {
1815	for (i = 0; i < report->maxfield; i++) {
1816	field = report->field[i];
1817	for (j = 0; j < field->maxusage; j++)
1818	if (field->usage[j].type == EV_LED &&
1819	field->value[j])
1820	count += 1;
1821	}
1822	}
1823	return count;
1824	}
1825	EXPORT_SYMBOL_GPL(hidinput_count_leds);
1826
1827	static void hidinput_led_worker(struct work_struct *work)
1828	{
1829	struct hid_device *hid = container_of(work, struct hid_device,
1830	led_work);
1831	struct hid_field *field;
1832	struct hid_report *report;
1833	int ret;
1834	u32 len;
1835	__u8 *buf;
1836
1837	field = hidinput_get_led_field(hid);
1838	if (!field)
1839	return;
1840
1841	/*
1842	* field->report is accessed unlocked regarding HID core. So there might
1843	* be another incoming SET-LED request from user-space, which changes
1844	* the LED state while we assemble our outgoing buffer. However, this
1845	* doesn't matter as hid_output_report() correctly converts it into a
1846	* boolean value no matter what information is currently set on the LED
1847	* field (even garbage). So the remote device will always get a valid
1848	* request.
1849	* And in case we send a wrong value, a next led worker is spawned
1850	* for every SET-LED request so the following worker will send the
1851	* correct value, guaranteed!
1852	*/
1853
1854	report = field->report;
1855
1856	/* use custom SET_REPORT request if possible (asynchronous) */
1857	if (hid->ll_driver->request)
1858	return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT);
1859
1860	/* fall back to generic raw-output-report */
1861	len = hid_report_len(report);
1862	buf = hid_alloc_report_buf(report, GFP_KERNEL);
1863	if (!buf)
1864	return;
1865
1866	hid_output_report(report, data: buf);
1867	/* synchronous output report */
1868	ret = hid_hw_output_report(hdev: hid, buf, len);
1869	if (ret == -ENOSYS)
1870	hid_hw_raw_request(hdev: hid, reportnum: report->id, buf, len, rtype: HID_OUTPUT_REPORT,
1871	reqtype: HID_REQ_SET_REPORT);
1872	kfree(objp: buf);
1873	}
1874
1875	static int hidinput_input_event(struct input_dev *dev, unsigned int type,
1876	unsigned int code, int value)
1877	{
1878	struct hid_device *hid = input_get_drvdata(dev);
1879	struct hid_field *field;
1880	int offset;
1881
1882	if (type == EV_FF)
1883	return input_ff_event(dev, type, code, value);
1884
1885	if (type != EV_LED)
1886	return -1;
1887
1888	if ((offset = hidinput_find_field(hid, type, code, field: &field)) == -1) {
1889	hid_warn(dev, "event field not found\n");
1890	return -1;
1891	}
1892
1893	hid_set_field(field, offset, value);
1894
1895	schedule_work(work: &hid->led_work);
1896	return 0;
1897	}
1898
1899	static int hidinput_open(struct input_dev *dev)
1900	{
1901	struct hid_device *hid = input_get_drvdata(dev);
1902
1903	return hid_hw_open(hdev: hid);
1904	}
1905
1906	static void hidinput_close(struct input_dev *dev)
1907	{
1908	struct hid_device *hid = input_get_drvdata(dev);
1909
1910	hid_hw_close(hdev: hid);
1911	}
1912
1913	static bool __hidinput_change_resolution_multipliers(struct hid_device *hid,
1914	struct hid_report *report, bool use_logical_max)
1915	{
1916	struct hid_usage *usage;
1917	bool update_needed = false;
1918	bool get_report_completed = false;
1919	int i, j;
1920
1921	if (report->maxfield == 0)
1922	return false;
1923
1924	for (i = 0; i < report->maxfield; i++) {
1925	__s32 value = use_logical_max ?
1926	report->field[i]->logical_maximum :
1927	report->field[i]->logical_minimum;
1928
1929	/* There is no good reason for a Resolution
1930	* Multiplier to have a count other than 1.
1931	* Ignore that case.
1932	*/
1933	if (report->field[i]->report_count != 1)
1934	continue;
1935
1936	for (j = 0; j < report->field[i]->maxusage; j++) {
1937	usage = &report->field[i]->usage[j];
1938
1939	if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER)
1940	continue;
1941
1942	/*
1943	* If we have more than one feature within this
1944	* report we need to fill in the bits from the
1945	* others before we can overwrite the ones for the
1946	* Resolution Multiplier.
1947	*
1948	* But if we're not allowed to read from the device,
1949	* we just bail. Such a device should not exist
1950	* anyway.
1951	*/
1952	if (!get_report_completed && report->maxfield > 1) {
1953	if (hid->quirks & HID_QUIRK_NO_INIT_REPORTS)
1954	return update_needed;
1955
1956	hid_hw_request(hdev: hid, report, reqtype: HID_REQ_GET_REPORT);
1957	hid_hw_wait(hdev: hid);
1958	get_report_completed = true;
1959	}
1960
1961	report->field[i]->value[j] = value;
1962	update_needed = true;
1963	}
1964	}
1965
1966	return update_needed;
1967	}
1968
1969	static void hidinput_change_resolution_multipliers(struct hid_device *hid)
1970	{
1971	struct hid_report_enum *rep_enum;
1972	struct hid_report *rep;
1973	int ret;
1974
1975	rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1976	list_for_each_entry(rep, &rep_enum->report_list, list) {
1977	bool update_needed = __hidinput_change_resolution_multipliers(hid,
1978	report: rep, use_logical_max: true);
1979
1980	if (update_needed) {
1981	ret = __hid_request(hid, rep, reqtype: HID_REQ_SET_REPORT);
1982	if (ret) {
1983	__hidinput_change_resolution_multipliers(hid,
1984	report: rep, use_logical_max: false);
1985	return;
1986	}
1987	}
1988	}
1989
1990	/* refresh our structs */
1991	hid_setup_resolution_multiplier(hid);
1992	}
1993
1994	static void report_features(struct hid_device *hid)
1995	{
1996	struct hid_driver *drv = hid->driver;
1997	struct hid_report_enum *rep_enum;
1998	struct hid_report *rep;
1999	struct hid_usage *usage;
2000	int i, j;
2001
2002	rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
2003	list_for_each_entry(rep, &rep_enum->report_list, list)
2004	for (i = 0; i < rep->maxfield; i++) {
2005	/* Ignore if report count is out of bounds. */
2006	if (rep->field[i]->report_count < 1)
2007	continue;
2008
2009	for (j = 0; j < rep->field[i]->maxusage; j++) {
2010	usage = &rep->field[i]->usage[j];
2011
2012	/* Verify if Battery Strength feature is available */
2013	if (usage->hid == HID_DC_BATTERYSTRENGTH)
2014	hidinput_setup_battery(dev: hid, report_type: HID_FEATURE_REPORT,
2015	field: rep->field[i], is_percentage: false);
2016
2017	if (drv->feature_mapping)
2018	drv->feature_mapping(hid, rep->field[i], usage);
2019	}
2020	}
2021	}
2022
2023	static struct hid_input *hidinput_allocate(struct hid_device *hid,
2024	unsigned int application)
2025	{
2026	struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
2027	struct input_dev *input_dev = input_allocate_device();
2028	const char *suffix = NULL;
2029	size_t suffix_len, name_len;
2030
2031	if (!hidinput || !input_dev)
2032	goto fail;
2033
2034	if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) &&
2035	hid->maxapplication > 1) {
2036	switch (application) {
2037	case HID_GD_KEYBOARD:
2038	suffix = "Keyboard";
2039	break;
2040	case HID_GD_KEYPAD:
2041	suffix = "Keypad";
2042	break;
2043	case HID_GD_MOUSE:
2044	suffix = "Mouse";
2045	break;
2046	case HID_DG_PEN:
2047	/*
2048	* yes, there is an issue here:
2049	* DG_PEN -> "Stylus"
2050	* DG_STYLUS -> "Pen"
2051	* But changing this now means users with config snippets
2052	* will have to change it and the test suite will not be happy.
2053	*/
2054	suffix = "Stylus";
2055	break;
2056	case HID_DG_STYLUS:
2057	suffix = "Pen";
2058	break;
2059	case HID_DG_TOUCHSCREEN:
2060	suffix = "Touchscreen";
2061	break;
2062	case HID_DG_TOUCHPAD:
2063	suffix = "Touchpad";
2064	break;
2065	case HID_GD_SYSTEM_CONTROL:
2066	suffix = "System Control";
2067	break;
2068	case HID_CP_CONSUMER_CONTROL:
2069	suffix = "Consumer Control";
2070	break;
2071	case HID_GD_WIRELESS_RADIO_CTLS:
2072	suffix = "Wireless Radio Control";
2073	break;
2074	case HID_GD_SYSTEM_MULTIAXIS:
2075	suffix = "System Multi Axis";
2076	break;
2077	default:
2078	break;
2079	}
2080	}
2081
2082	if (suffix) {
2083	name_len = strlen(hid->name);
2084	suffix_len = strlen(suffix);
2085	if ((name_len < suffix_len) ||
2086	strcmp(hid->name + name_len - suffix_len, suffix)) {
2087	hidinput->name = kasprintf(GFP_KERNEL, fmt: "%s %s",
2088	hid->name, suffix);
2089	if (!hidinput->name)
2090	goto fail;
2091	}
2092	}
2093
2094	input_set_drvdata(dev: input_dev, data: hid);
2095	input_dev->event = hidinput_input_event;
2096	input_dev->open = hidinput_open;
2097	input_dev->close = hidinput_close;
2098	input_dev->setkeycode = hidinput_setkeycode;
2099	input_dev->getkeycode = hidinput_getkeycode;
2100
2101	input_dev->name = hidinput->name ? hidinput->name : hid->name;
2102	input_dev->phys = hid->phys;
2103	input_dev->uniq = hid->uniq;
2104	input_dev->id.bustype = hid->bus;
2105	input_dev->id.vendor = hid->vendor;
2106	input_dev->id.product = hid->product;
2107	input_dev->id.version = hid->version;
2108	input_dev->dev.parent = &hid->dev;
2109
2110	hidinput->input = input_dev;
2111	hidinput->application = application;
2112	list_add_tail(new: &hidinput->list, head: &hid->inputs);
2113
2114	INIT_LIST_HEAD(list: &hidinput->reports);
2115
2116	return hidinput;
2117
2118	fail:
2119	kfree(objp: hidinput);
2120	input_free_device(dev: input_dev);
2121	hid_err(hid, "Out of memory during hid input probe\n");
2122	return NULL;
2123	}
2124
2125	static bool hidinput_has_been_populated(struct hid_input *hidinput)
2126	{
2127	int i;
2128	unsigned long r = 0;
2129
2130	for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++)
2131	r |= hidinput->input->evbit[i];
2132
2133	for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++)
2134	r |= hidinput->input->keybit[i];
2135
2136	for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++)
2137	r |= hidinput->input->relbit[i];
2138
2139	for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++)
2140	r |= hidinput->input->absbit[i];
2141
2142	for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++)
2143	r |= hidinput->input->mscbit[i];
2144
2145	for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++)
2146	r |= hidinput->input->ledbit[i];
2147
2148	for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++)
2149	r |= hidinput->input->sndbit[i];
2150
2151	for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++)
2152	r |= hidinput->input->ffbit[i];
2153
2154	for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++)
2155	r |= hidinput->input->swbit[i];
2156
2157	return !!r;
2158	}
2159
2160	static void hidinput_cleanup_hidinput(struct hid_device *hid,
2161	struct hid_input *hidinput)
2162	{
2163	struct hid_report *report;
2164	int i, k;
2165
2166	list_del(entry: &hidinput->list);
2167	input_free_device(dev: hidinput->input);
2168	kfree(objp: hidinput->name);
2169
2170	for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
2171	if (k == HID_OUTPUT_REPORT &&
2172	hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
2173	continue;
2174
2175	list_for_each_entry(report, &hid->report_enum[k].report_list,
2176	list) {
2177
2178	for (i = 0; i < report->maxfield; i++)
2179	if (report->field[i]->hidinput == hidinput)
2180	report->field[i]->hidinput = NULL;
2181	}
2182	}
2183
2184	kfree(objp: hidinput);
2185	}
2186
2187	static struct hid_input *hidinput_match(struct hid_report *report)
2188	{
2189	struct hid_device *hid = report->device;
2190	struct hid_input *hidinput;
2191
2192	list_for_each_entry(hidinput, &hid->inputs, list) {
2193	if (hidinput->report &&
2194	hidinput->report->id == report->id)
2195	return hidinput;
2196	}
2197
2198	return NULL;
2199	}
2200
2201	static struct hid_input *hidinput_match_application(struct hid_report *report)
2202	{
2203	struct hid_device *hid = report->device;
2204	struct hid_input *hidinput;
2205
2206	list_for_each_entry(hidinput, &hid->inputs, list) {
2207	if (hidinput->application == report->application)
2208	return hidinput;
2209
2210	/*
2211	* Keep SystemControl and ConsumerControl applications together
2212	* with the main keyboard, if present.
2213	*/
2214	if ((report->application == HID_GD_SYSTEM_CONTROL ||
2215	report->application == HID_CP_CONSUMER_CONTROL) &&
2216	hidinput->application == HID_GD_KEYBOARD) {
2217	return hidinput;
2218	}
2219	}
2220
2221	return NULL;
2222	}
2223
2224	static inline void hidinput_configure_usages(struct hid_input *hidinput,
2225	struct hid_report *report)
2226	{
2227	int i, j, k;
2228	int first_field_index = 0;
2229	int slot_collection_index = -1;
2230	int prev_collection_index = -1;
2231	unsigned int slot_idx = 0;
2232	struct hid_field *field;
2233
2234	/*
2235	* First tag all the fields that are part of a slot,
2236	* a slot needs to have one Contact ID in the collection
2237	*/
2238	for (i = 0; i < report->maxfield; i++) {
2239	field = report->field[i];
2240
2241	/* ignore fields without usage */
2242	if (field->maxusage < 1)
2243	continue;
2244
2245	/*
2246	* janitoring when collection_index changes
2247	*/
2248	if (prev_collection_index != field->usage->collection_index) {
2249	prev_collection_index = field->usage->collection_index;
2250	first_field_index = i;
2251	}
2252
2253	/*
2254	* if we already found a Contact ID in the collection,
2255	* tag and continue to the next.
2256	*/
2257	if (slot_collection_index == field->usage->collection_index) {
2258	field->slot_idx = slot_idx;
2259	continue;
2260	}
2261
2262	/* check if the current field has Contact ID */
2263	for (j = 0; j < field->maxusage; j++) {
2264	if (field->usage[j].hid == HID_DG_CONTACTID) {
2265	slot_collection_index = field->usage->collection_index;
2266	slot_idx++;
2267
2268	/*
2269	* mark all previous fields and this one in the
2270	* current collection to be slotted.
2271	*/
2272	for (k = first_field_index; k <= i; k++)
2273	report->field[k]->slot_idx = slot_idx;
2274	break;
2275	}
2276	}
2277	}
2278
2279	for (i = 0; i < report->maxfield; i++)
2280	for (j = 0; j < report->field[i]->maxusage; j++)
2281	hidinput_configure_usage(hidinput, field: report->field[i],
2282	usage: report->field[i]->usage + j,
2283	usage_index: j);
2284	}
2285
2286	/*
2287	* Register the input device; print a message.
2288	* Configure the input layer interface
2289	* Read all reports and initialize the absolute field values.
2290	*/
2291
2292	int hidinput_connect(struct hid_device *hid, unsigned int force)
2293	{
2294	struct hid_driver *drv = hid->driver;
2295	struct hid_report *report;
2296	struct hid_input *next, *hidinput = NULL;
2297	unsigned int application;
2298	int i, k;
2299
2300	INIT_LIST_HEAD(list: &hid->inputs);
2301	INIT_WORK(&hid->led_work, hidinput_led_worker);
2302
2303	hid->status &= ~HID_STAT_DUP_DETECTED;
2304
2305	if (!force) {
2306	for (i = 0; i < hid->maxcollection; i++) {
2307	struct hid_collection *col = &hid->collection[i];
2308	if (col->type == HID_COLLECTION_APPLICATION ||
2309	col->type == HID_COLLECTION_PHYSICAL)
2310	if (IS_INPUT_APPLICATION(col->usage))
2311	break;
2312	}
2313
2314	if (i == hid->maxcollection)
2315	return -1;
2316	}
2317
2318	report_features(hid);
2319
2320	for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
2321	if (k == HID_OUTPUT_REPORT &&
2322	hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
2323	continue;
2324
2325	list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
2326
2327	if (!report->maxfield)
2328	continue;
2329
2330	application = report->application;
2331
2332	/*
2333	* Find the previous hidinput report attached
2334	* to this report id.
2335	*/
2336	if (hid->quirks & HID_QUIRK_MULTI_INPUT)
2337	hidinput = hidinput_match(report);
2338	else if (hid->maxapplication > 1 &&
2339	(hid->quirks & HID_QUIRK_INPUT_PER_APP))
2340	hidinput = hidinput_match_application(report);
2341
2342	if (!hidinput) {
2343	hidinput = hidinput_allocate(hid, application);
2344	if (!hidinput)
2345	goto out_unwind;
2346	}
2347
2348	hidinput_configure_usages(hidinput, report);
2349
2350	if (hid->quirks & HID_QUIRK_MULTI_INPUT)
2351	hidinput->report = report;
2352
2353	list_add_tail(new: &report->hidinput_list,
2354	head: &hidinput->reports);
2355	}
2356	}
2357
2358	hidinput_change_resolution_multipliers(hid);
2359
2360	list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
2361	if (drv->input_configured &&
2362	drv->input_configured(hid, hidinput))
2363	goto out_unwind;
2364
2365	if (!hidinput_has_been_populated(hidinput)) {
2366	/* no need to register an input device not populated */
2367	hidinput_cleanup_hidinput(hid, hidinput);
2368	continue;
2369	}
2370
2371	if (input_register_device(hidinput->input))
2372	goto out_unwind;
2373	hidinput->registered = true;
2374	}
2375
2376	if (list_empty(head: &hid->inputs)) {
2377	hid_dbg(hid, "No inputs registered, leaving\n");
2378	goto out_unwind;
2379	}
2380
2381	if (hid->status & HID_STAT_DUP_DETECTED)
2382	hid_dbg(hid,
2383	"Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n");
2384
2385	return 0;
2386
2387	out_unwind:
2388	/* unwind the ones we already registered */
2389	hidinput_disconnect(hid);
2390
2391	return -1;
2392	}
2393	EXPORT_SYMBOL_GPL(hidinput_connect);
2394
2395	void hidinput_disconnect(struct hid_device *hid)
2396	{
2397	struct hid_input *hidinput, *next;
2398
2399	hidinput_cleanup_battery(dev: hid);
2400
2401	list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
2402	list_del(entry: &hidinput->list);
2403	if (hidinput->registered)
2404	input_unregister_device(hidinput->input);
2405	else
2406	input_free_device(dev: hidinput->input);
2407	kfree(objp: hidinput->name);
2408	kfree(objp: hidinput);
2409	}
2410
2411	/* led_work is spawned by input_dev callbacks, but doesn't access the
2412	* parent input_dev at all. Once all input devices are removed, we
2413	* know that led_work will never get restarted, so we can cancel it
2414	* synchronously and are safe. */
2415	cancel_work_sync(work: &hid->led_work);
2416	}
2417	EXPORT_SYMBOL_GPL(hidinput_disconnect);
2418
2419	void hidinput_reset_resume(struct hid_device *hid)
2420	{
2421	/* renegotiate host-device shared state after reset */
2422	hidinput_change_resolution_multipliers(hid);
2423	}
2424	EXPORT_SYMBOL_GPL(hidinput_reset_resume);
2425
2426	#ifdef CONFIG_HID_KUNIT_TEST
2427	#include "hid-input-test.c"
2428	#endif
2429