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	default:
307	return 0;
308	}
309
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)
315	return 0;
316	}
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)
322	return 0;
323	}
324
325	/* Calculate resolution */
326	return DIV_ROUND_CLOSEST(logical_extents, physical_extents);
327	}
328	EXPORT_SYMBOL_GPL(hidinput_calc_abs_res);
329
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,
338	};
339
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 */
344
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_APPLE,
362	USB_DEVICE_ID_APPLE_MAGICTRACKPAD),
363	HID_BATTERY_QUIRK_IGNORE },
364	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM,
365	USB_DEVICE_ID_ELECOM_BM084),
366	HID_BATTERY_QUIRK_IGNORE },
367	{ HID_USB_DEVICE(USB_VENDOR_ID_SYMBOL,
368	USB_DEVICE_ID_SYMBOL_SCANNER_3),
369	HID_BATTERY_QUIRK_IGNORE },
370	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK,
371	USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD),
372	HID_BATTERY_QUIRK_IGNORE },
373	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH,
374	USB_DEVICE_ID_LOGITECH_DINOVO_EDGE_KBD),
375	HID_BATTERY_QUIRK_IGNORE },
376	{ HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_ASUS_TP420IA_TOUCHSCREEN),
377	HID_BATTERY_QUIRK_IGNORE },
378	{ HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_ASUS_GV301RA_TOUCHSCREEN),
379	HID_BATTERY_QUIRK_IGNORE },
380	{ HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550_TOUCHSCREEN),
381	HID_BATTERY_QUIRK_IGNORE },
382	{ HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550VE_TOUCHSCREEN),
383	HID_BATTERY_QUIRK_IGNORE },
384	{ HID_USB_DEVICE(USB_VENDOR_ID_UGEE, USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_L),
385	HID_BATTERY_QUIRK_AVOID_QUERY },
386	{ HID_USB_DEVICE(USB_VENDOR_ID_UGEE, USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_PRO_MW),
387	HID_BATTERY_QUIRK_AVOID_QUERY },
388	{ HID_USB_DEVICE(USB_VENDOR_ID_UGEE, USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_PRO_SW),
389	HID_BATTERY_QUIRK_AVOID_QUERY },
390	{ HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_15),
391	HID_BATTERY_QUIRK_IGNORE },
392	{ HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_15T_DR100),
393	HID_BATTERY_QUIRK_IGNORE },
394	{ HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_EU0009NV),
395	HID_BATTERY_QUIRK_IGNORE },
396	{ HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_15),
397	HID_BATTERY_QUIRK_IGNORE },
398	{ HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_13_AW0020NG),
399	HID_BATTERY_QUIRK_IGNORE },
400	{ HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_SURFACE_GO_TOUCHSCREEN),
401	HID_BATTERY_QUIRK_IGNORE },
402	{ HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_SURFACE_GO2_TOUCHSCREEN),
403	HID_BATTERY_QUIRK_IGNORE },
404	{ HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_LENOVO_YOGA_C630_TOUCHSCREEN),
405	HID_BATTERY_QUIRK_IGNORE },
406	{ HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_13T_AW100),
407	HID_BATTERY_QUIRK_IGNORE },
408	{ HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_14T_EA100_V1),
409	HID_BATTERY_QUIRK_IGNORE },
410	{ HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_14T_EA100_V2),
411	HID_BATTERY_QUIRK_IGNORE },
412	{ HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_15_EU0556NG),
413	HID_BATTERY_QUIRK_IGNORE },
414	{}
415	};
416
417	static unsigned find_battery_quirk(struct hid_device *hdev)
418	{
419	unsigned quirks = 0;
420	const struct hid_device_id *match;
421
422	match = hid_match_id(hdev, id: hid_battery_quirks);
423	if (match != NULL)
424	quirks = match->driver_data;
425
426	return quirks;
427	}
428
429	static int hidinput_scale_battery_capacity(struct hid_device *dev,
430	int value)
431	{
432	if (dev->battery_min < dev->battery_max &&
433	value >= dev->battery_min && value <= dev->battery_max)
434	value = ((value - dev->battery_min) * 100) /
435	(dev->battery_max - dev->battery_min);
436
437	return value;
438	}
439
440	static int hidinput_query_battery_capacity(struct hid_device *dev)
441	{
442	u8 *buf;
443	int ret;
444
445	buf = kmalloc(size: 4, GFP_KERNEL);
446	if (!buf)
447	return -ENOMEM;
448
449	ret = hid_hw_raw_request(hdev: dev, reportnum: dev->battery_report_id, buf, len: 4,
450	rtype: dev->battery_report_type, reqtype: HID_REQ_GET_REPORT);
451	if (ret < 2) {
452	kfree(objp: buf);
453	return -ENODATA;
454	}
455
456	ret = hidinput_scale_battery_capacity(dev, value: buf[1]);
457	kfree(objp: buf);
458	return ret;
459	}
460
461	static int hidinput_get_battery_property(struct power_supply *psy,
462	enum power_supply_property prop,
463	union power_supply_propval *val)
464	{
465	struct hid_device *dev = power_supply_get_drvdata(psy);
466	int value;
467	int ret = 0;
468
469	switch (prop) {
470	case POWER_SUPPLY_PROP_PRESENT:
471	case POWER_SUPPLY_PROP_ONLINE:
472	val->intval = 1;
473	break;
474
475	case POWER_SUPPLY_PROP_CAPACITY:
476	if (dev->battery_status != HID_BATTERY_REPORTED &&
477	!dev->battery_avoid_query) {
478	value = hidinput_query_battery_capacity(dev);
479	if (value < 0)
480	return value;
481	} else {
482	value = dev->battery_capacity;
483	}
484
485	val->intval = value;
486	break;
487
488	case POWER_SUPPLY_PROP_MODEL_NAME:
489	val->strval = dev->name;
490	break;
491
492	case POWER_SUPPLY_PROP_STATUS:
493	if (dev->battery_status != HID_BATTERY_REPORTED &&
494	!dev->battery_avoid_query) {
495	value = hidinput_query_battery_capacity(dev);
496	if (value < 0)
497	return value;
498
499	dev->battery_capacity = value;
500	dev->battery_status = HID_BATTERY_QUERIED;
501	}
502
503	if (dev->battery_status == HID_BATTERY_UNKNOWN)
504	val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
505	else
506	val->intval = dev->battery_charge_status;
507	break;
508
509	case POWER_SUPPLY_PROP_SCOPE:
510	val->intval = POWER_SUPPLY_SCOPE_DEVICE;
511	break;
512
513	default:
514	ret = -EINVAL;
515	break;
516	}
517
518	return ret;
519	}
520
521	static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
522	struct hid_field *field, bool is_percentage)
523	{
524	struct power_supply_desc *psy_desc;
525	struct power_supply_config psy_cfg = { .drv_data = dev, };
526	unsigned quirks;
527	s32 min, max;
528	int error;
529
530	if (dev->battery)
531	return 0; /* already initialized? */
532
533	quirks = find_battery_quirk(hdev: dev);
534
535	hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
536	dev->bus, dev->vendor, dev->product, dev->version, quirks);
537
538	if (quirks & HID_BATTERY_QUIRK_IGNORE)
539	return 0;
540
541	psy_desc = kzalloc(size: sizeof(*psy_desc), GFP_KERNEL);
542	if (!psy_desc)
543	return -ENOMEM;
544
545	psy_desc->name = kasprintf(GFP_KERNEL, fmt: "hid-%s-battery",
546	strlen(dev->uniq) ?
547	dev->uniq : dev_name(dev: &dev->dev));
548	if (!psy_desc->name) {
549	error = -ENOMEM;
550	goto err_free_mem;
551	}
552
553	psy_desc->type = POWER_SUPPLY_TYPE_BATTERY;
554	psy_desc->properties = hidinput_battery_props;
555	psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props);
556	psy_desc->use_for_apm = 0;
557	psy_desc->get_property = hidinput_get_battery_property;
558
559	min = field->logical_minimum;
560	max = field->logical_maximum;
561
562	if (is_percentage || (quirks & HID_BATTERY_QUIRK_PERCENT)) {
563	min = 0;
564	max = 100;
565	}
566
567	if (quirks & HID_BATTERY_QUIRK_FEATURE)
568	report_type = HID_FEATURE_REPORT;
569
570	dev->battery_min = min;
571	dev->battery_max = max;
572	dev->battery_report_type = report_type;
573	dev->battery_report_id = field->report->id;
574	dev->battery_charge_status = POWER_SUPPLY_STATUS_DISCHARGING;
575
576	/*
577	* Stylus is normally not connected to the device and thus we
578	* can't query the device and get meaningful battery strength.
579	* We have to wait for the device to report it on its own.
580	*/
581	dev->battery_avoid_query = report_type == HID_INPUT_REPORT &&
582	field->physical == HID_DG_STYLUS;
583
584	if (quirks & HID_BATTERY_QUIRK_AVOID_QUERY)
585	dev->battery_avoid_query = true;
586
587	dev->battery = power_supply_register(parent: &dev->dev, desc: psy_desc, cfg: &psy_cfg);
588	if (IS_ERR(ptr: dev->battery)) {
589	error = PTR_ERR(ptr: dev->battery);
590	hid_warn(dev, "can't register power supply: %d\n", error);
591	goto err_free_name;
592	}
593
594	power_supply_powers(psy: dev->battery, dev: &dev->dev);
595	return 0;
596
597	err_free_name:
598	kfree(objp: psy_desc->name);
599	err_free_mem:
600	kfree(objp: psy_desc);
601	dev->battery = NULL;
602	return error;
603	}
604
605	static void hidinput_cleanup_battery(struct hid_device *dev)
606	{
607	const struct power_supply_desc *psy_desc;
608
609	if (!dev->battery)
610	return;
611
612	psy_desc = dev->battery->desc;
613	power_supply_unregister(psy: dev->battery);
614	kfree(objp: psy_desc->name);
615	kfree(objp: psy_desc);
616	dev->battery = NULL;
617	}
618
619	static void hidinput_update_battery(struct hid_device *dev, int value)
620	{
621	int capacity;
622
623	if (!dev->battery)
624	return;
625
626	if (value == 0 || value < dev->battery_min || value > dev->battery_max)
627	return;
628
629	capacity = hidinput_scale_battery_capacity(dev, value);
630
631	if (dev->battery_status != HID_BATTERY_REPORTED ||
632	capacity != dev->battery_capacity ||
633	ktime_after(cmp1: ktime_get_coarse(), cmp2: dev->battery_ratelimit_time)) {
634	dev->battery_capacity = capacity;
635	dev->battery_status = HID_BATTERY_REPORTED;
636	dev->battery_ratelimit_time =
637	ktime_add_ms(kt: ktime_get_coarse(), msec: 30 * 1000);
638	power_supply_changed(psy: dev->battery);
639	}
640	}
641
642	static bool hidinput_set_battery_charge_status(struct hid_device *dev,
643	unsigned int usage, int value)
644	{
645	switch (usage) {
646	case HID_BAT_CHARGING:
647	dev->battery_charge_status = value ?
648	POWER_SUPPLY_STATUS_CHARGING :
649	POWER_SUPPLY_STATUS_DISCHARGING;
650	return true;
651	}
652
653	return false;
654	}
655	#else /* !CONFIG_HID_BATTERY_STRENGTH */
656	static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
657	struct hid_field *field, bool is_percentage)
658	{
659	return 0;
660	}
661
662	static void hidinput_cleanup_battery(struct hid_device *dev)
663	{
664	}
665
666	static void hidinput_update_battery(struct hid_device *dev, int value)
667	{
668	}
669
670	static bool hidinput_set_battery_charge_status(struct hid_device *dev,
671	unsigned int usage, int value)
672	{
673	return false;
674	}
675	#endif /* CONFIG_HID_BATTERY_STRENGTH */
676
677	static bool hidinput_field_in_collection(struct hid_device *device, struct hid_field *field,
678	unsigned int type, unsigned int usage)
679	{
680	struct hid_collection *collection;
681
682	collection = &device->collection[field->usage->collection_index];
683
684	return collection->type == type && collection->usage == usage;
685	}
686
687	static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
688	struct hid_usage *usage, unsigned int usage_index)
689	{
690	struct input_dev *input = hidinput->input;
691	struct hid_device *device = input_get_drvdata(dev: input);
692	const struct usage_priority *usage_priority = NULL;
693	int max = 0, code;
694	unsigned int i = 0;
695	unsigned long *bit = NULL;
696
697	field->hidinput = hidinput;
698
699	if (field->flags & HID_MAIN_ITEM_CONSTANT)
700	goto ignore;
701
702	/* Ignore if report count is out of bounds. */
703	if (field->report_count < 1)
704	goto ignore;
705
706	/* only LED usages are supported in output fields */
707	if (field->report_type == HID_OUTPUT_REPORT &&
708	(usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
709	goto ignore;
710	}
711
712	/* assign a priority based on the static list declared here */
713	for (i = 0; i < ARRAY_SIZE(hidinput_usages_priorities); i++) {
714	if (usage->hid == hidinput_usages_priorities[i].usage) {
715	usage_priority = &hidinput_usages_priorities[i];
716
717	field->usages_priorities[usage_index] =
718	(ARRAY_SIZE(hidinput_usages_priorities) - i) << 8;
719	break;
720	}
721	}
722
723	/*
724	* For slotted devices, we need to also add the slot index
725	* in the priority.
726	*/
727	if (usage_priority && usage_priority->global)
728	field->usages_priorities[usage_index] |=
729	usage_priority->slot_overwrite;
730	else
731	field->usages_priorities[usage_index] |=
732	(0xff - field->slot_idx) << 16;
733
734	if (device->driver->input_mapping) {
735	int ret = device->driver->input_mapping(device, hidinput, field,
736	usage, &bit, &max);
737	if (ret > 0)
738	goto mapped;
739	if (ret < 0)
740	goto ignore;
741	}
742
743	switch (usage->hid & HID_USAGE_PAGE) {
744	case HID_UP_UNDEFINED:
745	goto ignore;
746
747	case HID_UP_KEYBOARD:
748	set_bit(EV_REP, addr: input->evbit);
749
750	if ((usage->hid & HID_USAGE) < 256) {
751	if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
752	map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
753	} else
754	map_key(KEY_UNKNOWN);
755
756	break;
757
758	case HID_UP_BUTTON:
759	code = ((usage->hid - 1) & HID_USAGE);
760
761	switch (field->application) {
762	case HID_GD_MOUSE:
763	case HID_GD_POINTER: code += BTN_MOUSE; break;
764	case HID_GD_JOYSTICK:
765	if (code <= 0xf)
766	code += BTN_JOYSTICK;
767	else
768	code += BTN_TRIGGER_HAPPY - 0x10;
769	break;
770	case HID_GD_GAMEPAD:
771	if (code <= 0xf)
772	code += BTN_GAMEPAD;
773	else
774	code += BTN_TRIGGER_HAPPY - 0x10;
775	break;
776	case HID_CP_CONSUMER_CONTROL:
777	if (hidinput_field_in_collection(device, field,
778	HID_COLLECTION_NAMED_ARRAY,
779	HID_CP_PROGRAMMABLEBUTTONS)) {
780	if (code <= 0x1d)
781	code += KEY_MACRO1;
782	else
783	code += BTN_TRIGGER_HAPPY - 0x1e;
784	break;
785	}
786	fallthrough;
787	default:
788	switch (field->physical) {
789	case HID_GD_MOUSE:
790	case HID_GD_POINTER: code += BTN_MOUSE; break;
791	case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
792	case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break;
793	default: code += BTN_MISC;
794	}
795	}
796
797	map_key(code);
798	break;
799
800	case HID_UP_SIMULATION:
801	switch (usage->hid & 0xffff) {
802	case 0xba: map_abs(ABS_RUDDER); break;
803	case 0xbb: map_abs(ABS_THROTTLE); break;
804	case 0xc4: map_abs(ABS_GAS); break;
805	case 0xc5: map_abs(ABS_BRAKE); break;
806	case 0xc8: map_abs(ABS_WHEEL); break;
807	default: goto ignore;
808	}
809	break;
810
811	case HID_UP_GENDESK:
812	if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
813	switch (usage->hid & 0xf) {
814	case 0x1: map_key_clear(KEY_POWER); break;
815	case 0x2: map_key_clear(KEY_SLEEP); break;
816	case 0x3: map_key_clear(KEY_WAKEUP); break;
817	case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
818	case 0x5: map_key_clear(KEY_MENU); break;
819	case 0x6: map_key_clear(KEY_PROG1); break;
820	case 0x7: map_key_clear(KEY_HELP); break;
821	case 0x8: map_key_clear(KEY_EXIT); break;
822	case 0x9: map_key_clear(KEY_SELECT); break;
823	case 0xa: map_key_clear(KEY_RIGHT); break;
824	case 0xb: map_key_clear(KEY_LEFT); break;
825	case 0xc: map_key_clear(KEY_UP); break;
826	case 0xd: map_key_clear(KEY_DOWN); break;
827	case 0xe: map_key_clear(KEY_POWER2); break;
828	case 0xf: map_key_clear(KEY_RESTART); break;
829	default: goto unknown;
830	}
831	break;
832	}
833
834	if ((usage->hid & 0xf0) == 0xa0) { /* SystemControl */
835	switch (usage->hid & 0xf) {
836	case 0x9: map_key_clear(KEY_MICMUTE); break;
837	default: goto ignore;
838	}
839	break;
840	}
841
842	if ((usage->hid & 0xf0) == 0xb0) { /* SC - Display */
843	switch (usage->hid & 0xf) {
844	case 0x05: map_key_clear(KEY_SWITCHVIDEOMODE); break;
845	default: goto ignore;
846	}
847	break;
848	}
849
850	/*
851	* Some lazy vendors declare 255 usages for System Control,
852	* leading to the creation of ABS_X|Y axis and too many others.
853	* It wouldn't be a problem if joydev doesn't consider the
854	* device as a joystick then.
855	*/
856	if (field->application == HID_GD_SYSTEM_CONTROL)
857	goto ignore;
858
859	if ((usage->hid & 0xf0) == 0x90) { /* D-pad */
860	switch (usage->hid) {
861	case HID_GD_UP: usage->hat_dir = 1; break;
862	case HID_GD_DOWN: usage->hat_dir = 5; break;
863	case HID_GD_RIGHT: usage->hat_dir = 3; break;
864	case HID_GD_LEFT: usage->hat_dir = 7; break;
865	default: goto unknown;
866	}
867	if (field->dpad) {
868	map_abs(field->dpad);
869	goto ignore;
870	}
871	map_abs(ABS_HAT0X);
872	break;
873	}
874
875	switch (usage->hid) {
876	/* These usage IDs map directly to the usage codes. */
877	case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
878	case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
879	if (field->flags & HID_MAIN_ITEM_RELATIVE)
880	map_rel(usage->hid & 0xf);
881	else
882	map_abs_clear(usage->hid & 0xf);
883	break;
884
885	case HID_GD_WHEEL:
886	if (field->flags & HID_MAIN_ITEM_RELATIVE) {
887	set_bit(REL_WHEEL, addr: input->relbit);
888	map_rel(REL_WHEEL_HI_RES);
889	} else {
890	map_abs(usage->hid & 0xf);
891	}
892	break;
893	case HID_GD_SLIDER: case HID_GD_DIAL:
894	if (field->flags & HID_MAIN_ITEM_RELATIVE)
895	map_rel(usage->hid & 0xf);
896	else
897	map_abs(usage->hid & 0xf);
898	break;
899
900	case HID_GD_HATSWITCH:
901	usage->hat_min = field->logical_minimum;
902	usage->hat_max = field->logical_maximum;
903	map_abs(ABS_HAT0X);
904	break;
905
906	case HID_GD_START: map_key_clear(BTN_START); break;
907	case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
908
909	case HID_GD_RFKILL_BTN:
910	/* MS wireless radio ctl extension, also check CA */
911	if (field->application == HID_GD_WIRELESS_RADIO_CTLS) {
912	map_key_clear(KEY_RFKILL);
913	/* We need to simulate the btn release */
914	field->flags |= HID_MAIN_ITEM_RELATIVE;
915	break;
916	}
917	goto unknown;
918
919	default: goto unknown;
920	}
921
922	break;
923
924	case HID_UP_LED:
925	switch (usage->hid & 0xffff) { /* HID-Value: */
926	case 0x01: map_led (LED_NUML); break; /* "Num Lock" */
927	case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */
928	case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */
929	case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */
930	case 0x05: map_led (LED_KANA); break; /* "Kana" */
931	case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */
932	case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */
933	case 0x09: map_led (LED_MUTE); break; /* "Mute" */
934	case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */
935	case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */
936	case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */
937
938	default: goto ignore;
939	}
940	break;
941
942	case HID_UP_DIGITIZER:
943	if ((field->application & 0xff) == 0x01) /* Digitizer */
944	__set_bit(INPUT_PROP_POINTER, input->propbit);
945	else if ((field->application & 0xff) == 0x02) /* Pen */
946	__set_bit(INPUT_PROP_DIRECT, input->propbit);
947
948	switch (usage->hid & 0xff) {
949	case 0x00: /* Undefined */
950	goto ignore;
951
952	case 0x30: /* TipPressure */
953	if (!test_bit(BTN_TOUCH, input->keybit)) {
954	device->quirks |= HID_QUIRK_NOTOUCH;
955	set_bit(EV_KEY, addr: input->evbit);
956	set_bit(BTN_TOUCH, addr: input->keybit);
957	}
958	map_abs_clear(ABS_PRESSURE);
959	break;
960
961	case 0x32: /* InRange */
962	switch (field->physical) {
963	case HID_DG_PUCK:
964	map_key(BTN_TOOL_MOUSE);
965	break;
966	case HID_DG_FINGER:
967	map_key(BTN_TOOL_FINGER);
968	break;
969	default:
970	/*
971	* If the physical is not given,
972	* rely on the application.
973	*/
974	if (!field->physical) {
975	switch (field->application) {
976	case HID_DG_TOUCHSCREEN:
977	case HID_DG_TOUCHPAD:
978	map_key_clear(BTN_TOOL_FINGER);
979	break;
980	default:
981	map_key_clear(BTN_TOOL_PEN);
982	}
983	} else {
984	map_key(BTN_TOOL_PEN);
985	}
986	break;
987	}
988	break;
989
990	case 0x3b: /* Battery Strength */
991	hidinput_setup_battery(dev: device, report_type: HID_INPUT_REPORT, field, is_percentage: false);
992	usage->type = EV_PWR;
993	return;
994
995	case 0x3c: /* Invert */
996	device->quirks &= ~HID_QUIRK_NOINVERT;
997	map_key_clear(BTN_TOOL_RUBBER);
998	break;
999
1000	case 0x3d: /* X Tilt */
1001	map_abs_clear(ABS_TILT_X);
1002	break;
1003
1004	case 0x3e: /* Y Tilt */
1005	map_abs_clear(ABS_TILT_Y);
1006	break;
1007
1008	case 0x33: /* Touch */
1009	case 0x42: /* TipSwitch */
1010	case 0x43: /* TipSwitch2 */
1011	device->quirks &= ~HID_QUIRK_NOTOUCH;
1012	map_key_clear(BTN_TOUCH);
1013	break;
1014
1015	case 0x44: /* BarrelSwitch */
1016	map_key_clear(BTN_STYLUS);
1017	break;
1018
1019	case 0x45: /* ERASER */
1020	/*
1021	* This event is reported when eraser tip touches the surface.
1022	* Actual eraser (BTN_TOOL_RUBBER) is set and released either
1023	* by Invert if tool reports proximity or by Eraser directly.
1024	*/
1025	if (!test_bit(BTN_TOOL_RUBBER, input->keybit)) {
1026	device->quirks |= HID_QUIRK_NOINVERT;
1027	set_bit(BTN_TOOL_RUBBER, addr: input->keybit);
1028	}
1029	map_key_clear(BTN_TOUCH);
1030	break;
1031
1032	case 0x46: /* TabletPick */
1033	case 0x5a: /* SecondaryBarrelSwitch */
1034	map_key_clear(BTN_STYLUS2);
1035	break;
1036
1037	case 0x5b: /* TransducerSerialNumber */
1038	case 0x6e: /* TransducerSerialNumber2 */
1039	map_msc(MSC_SERIAL);
1040	break;
1041
1042	default: goto unknown;
1043	}
1044	break;
1045
1046	case HID_UP_TELEPHONY:
1047	switch (usage->hid & HID_USAGE) {
1048	case 0x2f: map_key_clear(KEY_MICMUTE); break;
1049	case 0xb0: map_key_clear(KEY_NUMERIC_0); break;
1050	case 0xb1: map_key_clear(KEY_NUMERIC_1); break;
1051	case 0xb2: map_key_clear(KEY_NUMERIC_2); break;
1052	case 0xb3: map_key_clear(KEY_NUMERIC_3); break;
1053	case 0xb4: map_key_clear(KEY_NUMERIC_4); break;
1054	case 0xb5: map_key_clear(KEY_NUMERIC_5); break;
1055	case 0xb6: map_key_clear(KEY_NUMERIC_6); break;
1056	case 0xb7: map_key_clear(KEY_NUMERIC_7); break;
1057	case 0xb8: map_key_clear(KEY_NUMERIC_8); break;
1058	case 0xb9: map_key_clear(KEY_NUMERIC_9); break;
1059	case 0xba: map_key_clear(KEY_NUMERIC_STAR); break;
1060	case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break;
1061	case 0xbc: map_key_clear(KEY_NUMERIC_A); break;
1062	case 0xbd: map_key_clear(KEY_NUMERIC_B); break;
1063	case 0xbe: map_key_clear(KEY_NUMERIC_C); break;
1064	case 0xbf: map_key_clear(KEY_NUMERIC_D); break;
1065	default: goto ignore;
1066	}
1067	break;
1068
1069	case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */
1070	switch (usage->hid & HID_USAGE) {
1071	case 0x000: goto ignore;
1072	case 0x030: map_key_clear(KEY_POWER); break;
1073	case 0x031: map_key_clear(KEY_RESTART); break;
1074	case 0x032: map_key_clear(KEY_SLEEP); break;
1075	case 0x034: map_key_clear(KEY_SLEEP); break;
1076	case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break;
1077	case 0x036: map_key_clear(BTN_MISC); break;
1078
1079	case 0x040: map_key_clear(KEY_MENU); break; /* Menu */
1080	case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */
1081	case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */
1082	case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */
1083	case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */
1084	case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */
1085	case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */
1086	case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */
1087	case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */
1088
1089	case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */
1090	case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */
1091	case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */
1092	case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */
1093	case 0x069: map_key_clear(KEY_RED); break;
1094	case 0x06a: map_key_clear(KEY_GREEN); break;
1095	case 0x06b: map_key_clear(KEY_BLUE); break;
1096	case 0x06c: map_key_clear(KEY_YELLOW); break;
1097	case 0x06d: map_key_clear(KEY_ASPECT_RATIO); break;
1098
1099	case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break;
1100	case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break;
1101	case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break;
1102	case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break;
1103	case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break;
1104	case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break;
1105
1106	case 0x076: map_key_clear(KEY_CAMERA_ACCESS_ENABLE); break;
1107	case 0x077: map_key_clear(KEY_CAMERA_ACCESS_DISABLE); break;
1108	case 0x078: map_key_clear(KEY_CAMERA_ACCESS_TOGGLE); break;
1109
1110	case 0x079: map_key_clear(KEY_KBDILLUMUP); break;
1111	case 0x07a: map_key_clear(KEY_KBDILLUMDOWN); break;
1112	case 0x07c: map_key_clear(KEY_KBDILLUMTOGGLE); break;
1113
1114	case 0x082: map_key_clear(KEY_VIDEO_NEXT); break;
1115	case 0x083: map_key_clear(KEY_LAST); break;
1116	case 0x084: map_key_clear(KEY_ENTER); break;
1117	case 0x088: map_key_clear(KEY_PC); break;
1118	case 0x089: map_key_clear(KEY_TV); break;
1119	case 0x08a: map_key_clear(KEY_WWW); break;
1120	case 0x08b: map_key_clear(KEY_DVD); break;
1121	case 0x08c: map_key_clear(KEY_PHONE); break;
1122	case 0x08d: map_key_clear(KEY_PROGRAM); break;
1123	case 0x08e: map_key_clear(KEY_VIDEOPHONE); break;
1124	case 0x08f: map_key_clear(KEY_GAMES); break;
1125	case 0x090: map_key_clear(KEY_MEMO); break;
1126	case 0x091: map_key_clear(KEY_CD); break;
1127	case 0x092: map_key_clear(KEY_VCR); break;
1128	case 0x093: map_key_clear(KEY_TUNER); break;
1129	case 0x094: map_key_clear(KEY_EXIT); break;
1130	case 0x095: map_key_clear(KEY_HELP); break;
1131	case 0x096: map_key_clear(KEY_TAPE); break;
1132	case 0x097: map_key_clear(KEY_TV2); break;
1133	case 0x098: map_key_clear(KEY_SAT); break;
1134	case 0x09a: map_key_clear(KEY_PVR); break;
1135
1136	case 0x09c: map_key_clear(KEY_CHANNELUP); break;
1137	case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
1138	case 0x0a0: map_key_clear(KEY_VCR2); break;
1139
1140	case 0x0b0: map_key_clear(KEY_PLAY); break;
1141	case 0x0b1: map_key_clear(KEY_PAUSE); break;
1142	case 0x0b2: map_key_clear(KEY_RECORD); break;
1143	case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
1144	case 0x0b4: map_key_clear(KEY_REWIND); break;
1145	case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
1146	case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
1147	case 0x0b7: map_key_clear(KEY_STOPCD); break;
1148	case 0x0b8: map_key_clear(KEY_EJECTCD); break;
1149	case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break;
1150	case 0x0b9: map_key_clear(KEY_SHUFFLE); break;
1151	case 0x0bf: map_key_clear(KEY_SLOW); break;
1152
1153	case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
1154	case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break;
1155
1156	case 0x0d8: map_key_clear(KEY_DICTATE); break;
1157	case 0x0d9: map_key_clear(KEY_EMOJI_PICKER); break;
1158
1159	case 0x0e0: map_abs_clear(ABS_VOLUME); break;
1160	case 0x0e2: map_key_clear(KEY_MUTE); break;
1161	case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
1162	case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
1163	case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
1164	case 0x0f5: map_key_clear(KEY_SLOW); break;
1165
1166	case 0x181: map_key_clear(KEY_BUTTONCONFIG); break;
1167	case 0x182: map_key_clear(KEY_BOOKMARKS); break;
1168	case 0x183: map_key_clear(KEY_CONFIG); break;
1169	case 0x184: map_key_clear(KEY_WORDPROCESSOR); break;
1170	case 0x185: map_key_clear(KEY_EDITOR); break;
1171	case 0x186: map_key_clear(KEY_SPREADSHEET); break;
1172	case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break;
1173	case 0x188: map_key_clear(KEY_PRESENTATION); break;
1174	case 0x189: map_key_clear(KEY_DATABASE); break;
1175	case 0x18a: map_key_clear(KEY_MAIL); break;
1176	case 0x18b: map_key_clear(KEY_NEWS); break;
1177	case 0x18c: map_key_clear(KEY_VOICEMAIL); break;
1178	case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break;
1179	case 0x18e: map_key_clear(KEY_CALENDAR); break;
1180	case 0x18f: map_key_clear(KEY_TASKMANAGER); break;
1181	case 0x190: map_key_clear(KEY_JOURNAL); break;
1182	case 0x191: map_key_clear(KEY_FINANCE); break;
1183	case 0x192: map_key_clear(KEY_CALC); break;
1184	case 0x193: map_key_clear(KEY_PLAYER); break;
1185	case 0x194: map_key_clear(KEY_FILE); break;
1186	case 0x196: map_key_clear(KEY_WWW); break;
1187	case 0x199: map_key_clear(KEY_CHAT); break;
1188	case 0x19c: map_key_clear(KEY_LOGOFF); break;
1189	case 0x19e: map_key_clear(KEY_COFFEE); break;
1190	case 0x19f: map_key_clear(KEY_CONTROLPANEL); break;
1191	case 0x1a2: map_key_clear(KEY_APPSELECT); break;
1192	case 0x1a3: map_key_clear(KEY_NEXT); break;
1193	case 0x1a4: map_key_clear(KEY_PREVIOUS); break;
1194	case 0x1a6: map_key_clear(KEY_HELP); break;
1195	case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
1196	case 0x1ab: map_key_clear(KEY_SPELLCHECK); break;
1197	case 0x1ae: map_key_clear(KEY_KEYBOARD); break;
1198	case 0x1b1: map_key_clear(KEY_SCREENSAVER); break;
1199	case 0x1b4: map_key_clear(KEY_FILE); break;
1200	case 0x1b6: map_key_clear(KEY_IMAGES); break;
1201	case 0x1b7: map_key_clear(KEY_AUDIO); break;
1202	case 0x1b8: map_key_clear(KEY_VIDEO); break;
1203	case 0x1bc: map_key_clear(KEY_MESSENGER); break;
1204	case 0x1bd: map_key_clear(KEY_INFO); break;
1205	case 0x1cb: map_key_clear(KEY_ASSISTANT); break;
1206	case 0x201: map_key_clear(KEY_NEW); break;
1207	case 0x202: map_key_clear(KEY_OPEN); break;
1208	case 0x203: map_key_clear(KEY_CLOSE); break;
1209	case 0x204: map_key_clear(KEY_EXIT); break;
1210	case 0x207: map_key_clear(KEY_SAVE); break;
1211	case 0x208: map_key_clear(KEY_PRINT); break;
1212	case 0x209: map_key_clear(KEY_PROPS); break;
1213	case 0x21a: map_key_clear(KEY_UNDO); break;
1214	case 0x21b: map_key_clear(KEY_COPY); break;
1215	case 0x21c: map_key_clear(KEY_CUT); break;
1216	case 0x21d: map_key_clear(KEY_PASTE); break;
1217	case 0x21f: map_key_clear(KEY_FIND); break;
1218	case 0x221: map_key_clear(KEY_SEARCH); break;
1219	case 0x222: map_key_clear(KEY_GOTO); break;
1220	case 0x223: map_key_clear(KEY_HOMEPAGE); break;
1221	case 0x224: map_key_clear(KEY_BACK); break;
1222	case 0x225: map_key_clear(KEY_FORWARD); break;
1223	case 0x226: map_key_clear(KEY_STOP); break;
1224	case 0x227: map_key_clear(KEY_REFRESH); break;
1225	case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
1226	case 0x22d: map_key_clear(KEY_ZOOMIN); break;
1227	case 0x22e: map_key_clear(KEY_ZOOMOUT); break;
1228	case 0x22f: map_key_clear(KEY_ZOOMRESET); break;
1229	case 0x232: map_key_clear(KEY_FULL_SCREEN); break;
1230	case 0x233: map_key_clear(KEY_SCROLLUP); break;
1231	case 0x234: map_key_clear(KEY_SCROLLDOWN); break;
1232	case 0x238: /* AC Pan */
1233	set_bit(REL_HWHEEL, addr: input->relbit);
1234	map_rel(REL_HWHEEL_HI_RES);
1235	break;
1236	case 0x23d: map_key_clear(KEY_EDIT); break;
1237	case 0x25f: map_key_clear(KEY_CANCEL); break;
1238	case 0x269: map_key_clear(KEY_INSERT); break;
1239	case 0x26a: map_key_clear(KEY_DELETE); break;
1240	case 0x279: map_key_clear(KEY_REDO); break;
1241
1242	case 0x289: map_key_clear(KEY_REPLY); break;
1243	case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
1244	case 0x28c: map_key_clear(KEY_SEND); break;
1245
1246	case 0x29d: map_key_clear(KEY_KBD_LAYOUT_NEXT); break;
1247
1248	case 0x2a2: map_key_clear(KEY_ALL_APPLICATIONS); break;
1249
1250	case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break;
1251	case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break;
1252	case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break;
1253	case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break;
1254	case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break;
1255	case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break;
1256
1257	case 0x29f: map_key_clear(KEY_SCALE); break;
1258
1259	default: map_key_clear(KEY_UNKNOWN);
1260	}
1261	break;
1262
1263	case HID_UP_GENDEVCTRLS:
1264	switch (usage->hid) {
1265	case HID_DC_BATTERYSTRENGTH:
1266	hidinput_setup_battery(dev: device, report_type: HID_INPUT_REPORT, field, is_percentage: false);
1267	usage->type = EV_PWR;
1268	return;
1269	}
1270	goto unknown;
1271
1272	case HID_UP_BATTERY:
1273	switch (usage->hid) {
1274	case HID_BAT_ABSOLUTESTATEOFCHARGE:
1275	hidinput_setup_battery(dev: device, report_type: HID_INPUT_REPORT, field, is_percentage: true);
1276	usage->type = EV_PWR;
1277	return;
1278	case HID_BAT_CHARGING:
1279	usage->type = EV_PWR;
1280	return;
1281	}
1282	goto unknown;
1283	case HID_UP_CAMERA:
1284	switch (usage->hid & HID_USAGE) {
1285	case 0x020:
1286	map_key_clear(KEY_CAMERA_FOCUS); break;
1287	case 0x021:
1288	map_key_clear(KEY_CAMERA); break;
1289	default:
1290	goto ignore;
1291	}
1292	break;
1293
1294	case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
1295	set_bit(EV_REP, addr: input->evbit);
1296	switch (usage->hid & HID_USAGE) {
1297	case 0x021: map_key_clear(KEY_PRINT); break;
1298	case 0x070: map_key_clear(KEY_HP); break;
1299	case 0x071: map_key_clear(KEY_CAMERA); break;
1300	case 0x072: map_key_clear(KEY_SOUND); break;
1301	case 0x073: map_key_clear(KEY_QUESTION); break;
1302	case 0x080: map_key_clear(KEY_EMAIL); break;
1303	case 0x081: map_key_clear(KEY_CHAT); break;
1304	case 0x082: map_key_clear(KEY_SEARCH); break;
1305	case 0x083: map_key_clear(KEY_CONNECT); break;
1306	case 0x084: map_key_clear(KEY_FINANCE); break;
1307	case 0x085: map_key_clear(KEY_SPORT); break;
1308	case 0x086: map_key_clear(KEY_SHOP); break;
1309	default: goto ignore;
1310	}
1311	break;
1312
1313	case HID_UP_HPVENDOR2:
1314	set_bit(EV_REP, addr: input->evbit);
1315	switch (usage->hid & HID_USAGE) {
1316	case 0x001: map_key_clear(KEY_MICMUTE); break;
1317	case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break;
1318	case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break;
1319	default: goto ignore;
1320	}
1321	break;
1322
1323	case HID_UP_MSVENDOR:
1324	goto ignore;
1325
1326	case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
1327	set_bit(EV_REP, addr: input->evbit);
1328	goto ignore;
1329
1330	case HID_UP_LOGIVENDOR:
1331	/* intentional fallback */
1332	case HID_UP_LOGIVENDOR2:
1333	/* intentional fallback */
1334	case HID_UP_LOGIVENDOR3:
1335	goto ignore;
1336
1337	case HID_UP_PID:
1338	switch (usage->hid & HID_USAGE) {
1339	case 0xa4: map_key_clear(BTN_DEAD); break;
1340	default: goto ignore;
1341	}
1342	break;
1343
1344	default:
1345	unknown:
1346	if (field->report_size == 1) {
1347	if (field->report->type == HID_OUTPUT_REPORT) {
1348	map_led(LED_MISC);
1349	break;
1350	}
1351	map_key(BTN_MISC);
1352	break;
1353	}
1354	if (field->flags & HID_MAIN_ITEM_RELATIVE) {
1355	map_rel(REL_MISC);
1356	break;
1357	}
1358	map_abs(ABS_MISC);
1359	break;
1360	}
1361
1362	mapped:
1363	/* Mapping failed, bail out */
1364	if (!bit)
1365	return;
1366
1367	if (device->driver->input_mapped &&
1368	device->driver->input_mapped(device, hidinput, field, usage,
1369	&bit, &max) < 0) {
1370	/*
1371	* The driver indicated that no further generic handling
1372	* of the usage is desired.
1373	*/
1374	return;
1375	}
1376
1377	set_bit(nr: usage->type, addr: input->evbit);
1378
1379	/*
1380	* This part is *really* controversial:
1381	* - HID aims at being generic so we should do our best to export
1382	* all incoming events
1383	* - HID describes what events are, so there is no reason for ABS_X
1384	* to be mapped to ABS_Y
1385	* - HID is using *_MISC+N as a default value, but nothing prevents
1386	* *_MISC+N to overwrite a legitimate even, which confuses userspace
1387	* (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different
1388	* processing)
1389	*
1390	* If devices still want to use this (at their own risk), they will
1391	* have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but
1392	* the default should be a reliable mapping.
1393	*/
1394	while (usage->code <= max && test_and_set_bit(nr: usage->code, addr: bit)) {
1395	if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) {
1396	usage->code = find_next_zero_bit(addr: bit,
1397	size: max + 1,
1398	offset: usage->code);
1399	} else {
1400	device->status |= HID_STAT_DUP_DETECTED;
1401	goto ignore;
1402	}
1403	}
1404
1405	if (usage->code > max)
1406	goto ignore;
1407
1408	if (usage->type == EV_ABS) {
1409
1410	int a = field->logical_minimum;
1411	int b = field->logical_maximum;
1412
1413	if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
1414	a = field->logical_minimum = 0;
1415	b = field->logical_maximum = 255;
1416	}
1417
1418	if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
1419	input_set_abs_params(dev: input, axis: usage->code, min: a, max: b, fuzz: (b - a) >> 8, flat: (b - a) >> 4);
1420	else input_set_abs_params(dev: input, axis: usage->code, min: a, max: b, fuzz: 0, flat: 0);
1421
1422	input_abs_set_res(dev: input, axis: usage->code,
1423	val: hidinput_calc_abs_res(field, usage->code));
1424
1425	/* use a larger default input buffer for MT devices */
1426	if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
1427	input_set_events_per_packet(dev: input, n_events: 60);
1428	}
1429
1430	if (usage->type == EV_ABS &&
1431	(usage->hat_min < usage->hat_max || usage->hat_dir)) {
1432	int i;
1433	for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
1434	input_set_abs_params(dev: input, axis: i, min: -1, max: 1, fuzz: 0, flat: 0);
1435	set_bit(nr: i, addr: input->absbit);
1436	}
1437	if (usage->hat_dir && !field->dpad)
1438	field->dpad = usage->code;
1439	}
1440
1441	/* for those devices which produce Consumer volume usage as relative,
1442	* we emulate pressing volumeup/volumedown appropriate number of times
1443	* in hidinput_hid_event()
1444	*/
1445	if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1446	(usage->code == ABS_VOLUME)) {
1447	set_bit(KEY_VOLUMEUP, addr: input->keybit);
1448	set_bit(KEY_VOLUMEDOWN, addr: input->keybit);
1449	}
1450
1451	if (usage->type == EV_KEY) {
1452	set_bit(EV_MSC, addr: input->evbit);
1453	set_bit(MSC_SCAN, addr: input->mscbit);
1454	}
1455
1456	return;
1457
1458	ignore:
1459	usage->type = 0;
1460	usage->code = 0;
1461	}
1462
1463	static void hidinput_handle_scroll(struct hid_usage *usage,
1464	struct input_dev *input,
1465	__s32 value)
1466	{
1467	int code;
1468	int hi_res, lo_res;
1469
1470	if (value == 0)
1471	return;
1472
1473	if (usage->code == REL_WHEEL_HI_RES)
1474	code = REL_WHEEL;
1475	else
1476	code = REL_HWHEEL;
1477
1478	/*
1479	* Windows reports one wheel click as value 120. Where a high-res
1480	* scroll wheel is present, a fraction of 120 is reported instead.
1481	* Our REL_WHEEL_HI_RES axis does the same because all HW must
1482	* adhere to the 120 expectation.
1483	*/
1484	hi_res = value * 120/usage->resolution_multiplier;
1485
1486	usage->wheel_accumulated += hi_res;
1487	lo_res = usage->wheel_accumulated/120;
1488	if (lo_res)
1489	usage->wheel_accumulated -= lo_res * 120;
1490
1491	input_event(dev: input, EV_REL, code, value: lo_res);
1492	input_event(dev: input, EV_REL, code: usage->code, value: hi_res);
1493	}
1494
1495	static void hid_report_release_tool(struct hid_report *report, struct input_dev *input,
1496	unsigned int tool)
1497	{
1498	/* if the given tool is not currently reported, ignore */
1499	if (!test_bit(tool, input->key))
1500	return;
1501
1502	/*
1503	* if the given tool was previously set, release it,
1504	* release any TOUCH and send an EV_SYN
1505	*/
1506	input_event(dev: input, EV_KEY, BTN_TOUCH, value: 0);
1507	input_event(dev: input, EV_KEY, code: tool, value: 0);
1508	input_event(dev: input, EV_SYN, SYN_REPORT, value: 0);
1509
1510	report->tool = 0;
1511	}
1512
1513	static void hid_report_set_tool(struct hid_report *report, struct input_dev *input,
1514	unsigned int new_tool)
1515	{
1516	if (report->tool != new_tool)
1517	hid_report_release_tool(report, input, tool: report->tool);
1518
1519	input_event(dev: input, EV_KEY, code: new_tool, value: 1);
1520	report->tool = new_tool;
1521	}
1522
1523	void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
1524	{
1525	struct input_dev *input;
1526	struct hid_report *report = field->report;
1527	unsigned *quirks = &hid->quirks;
1528
1529	if (!usage->type)
1530	return;
1531
1532	if (usage->type == EV_PWR) {
1533	bool handled = hidinput_set_battery_charge_status(dev: hid, usage: usage->hid, value);
1534
1535	if (!handled)
1536	hidinput_update_battery(dev: hid, value);
1537
1538	return;
1539	}
1540
1541	if (!field->hidinput)
1542	return;
1543
1544	input = field->hidinput->input;
1545
1546	if (usage->hat_min < usage->hat_max || usage->hat_dir) {
1547	int hat_dir = usage->hat_dir;
1548	if (!hat_dir)
1549	hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
1550	if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
1551	input_event(dev: input, type: usage->type, code: usage->code , value: hid_hat_to_axis[hat_dir].x);
1552	input_event(dev: input, type: usage->type, code: usage->code + 1, value: hid_hat_to_axis[hat_dir].y);
1553	return;
1554	}
1555
1556	/*
1557	* Ignore out-of-range values as per HID specification,
1558	* section 5.10 and 6.2.25, when NULL state bit is present.
1559	* When it's not, clamp the value to match Microsoft's input
1560	* driver as mentioned in "Required HID usages for digitizers":
1561	* https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp
1562	*
1563	* The logical_minimum < logical_maximum check is done so that we
1564	* don't unintentionally discard values sent by devices which
1565	* don't specify logical min and max.
1566	*/
1567	if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
1568	field->logical_minimum < field->logical_maximum) {
1569	if (field->flags & HID_MAIN_ITEM_NULL_STATE &&
1570	(value < field->logical_minimum ||
1571	value > field->logical_maximum)) {
1572	dbg_hid("Ignoring out-of-range value %x\n", value);
1573	return;
1574	}
1575	value = clamp(value,
1576	field->logical_minimum,
1577	field->logical_maximum);
1578	}
1579
1580	switch (usage->hid) {
1581	case HID_DG_ERASER:
1582	report->tool_active |= !!value;
1583
1584	/*
1585	* if eraser is set, we must enforce BTN_TOOL_RUBBER
1586	* to accommodate for devices not following the spec.
1587	*/
1588	if (value)
1589	hid_report_set_tool(report, input, BTN_TOOL_RUBBER);
1590	else if (report->tool != BTN_TOOL_RUBBER)
1591	/* value is off, tool is not rubber, ignore */
1592	return;
1593	else if (*quirks & HID_QUIRK_NOINVERT &&
1594	!test_bit(BTN_TOUCH, input->key)) {
1595	/*
1596	* There is no invert to release the tool, let hid_input
1597	* send BTN_TOUCH with scancode and release the tool after.
1598	*/
1599	hid_report_release_tool(report, input, BTN_TOOL_RUBBER);
1600	return;
1601	}
1602
1603	/* let hid-input set BTN_TOUCH */
1604	break;
1605
1606	case HID_DG_INVERT:
1607	report->tool_active |= !!value;
1608
1609	/*
1610	* If invert is set, we store BTN_TOOL_RUBBER.
1611	*/
1612	if (value)
1613	hid_report_set_tool(report, input, BTN_TOOL_RUBBER);
1614	else if (!report->tool_active)
1615	/* tool_active not set means Invert and Eraser are not set */
1616	hid_report_release_tool(report, input, BTN_TOOL_RUBBER);
1617
1618	/* no further processing */
1619	return;
1620
1621	case HID_DG_INRANGE:
1622	report->tool_active |= !!value;
1623
1624	if (report->tool_active) {
1625	/*
1626	* if tool is not set but is marked as active,
1627	* assume ours
1628	*/
1629	if (!report->tool)
1630	report->tool = usage->code;
1631
1632	/* drivers may have changed the value behind our back, resend it */
1633	hid_report_set_tool(report, input, new_tool: report->tool);
1634	} else {
1635	hid_report_release_tool(report, input, tool: usage->code);
1636	}
1637
1638	/* reset tool_active for the next event */
1639	report->tool_active = false;
1640
1641	/* no further processing */
1642	return;
1643
1644	case HID_DG_TIPSWITCH:
1645	report->tool_active |= !!value;
1646
1647	/* if tool is set to RUBBER we should ignore the current value */
1648	if (report->tool == BTN_TOOL_RUBBER)
1649	return;
1650
1651	break;
1652
1653	case HID_DG_TIPPRESSURE:
1654	if (*quirks & HID_QUIRK_NOTOUCH) {
1655	int a = field->logical_minimum;
1656	int b = field->logical_maximum;
1657
1658	if (value > a + ((b - a) >> 3)) {
1659	input_event(dev: input, EV_KEY, BTN_TOUCH, value: 1);
1660	report->tool_active = true;
1661	}
1662	}
1663	break;
1664
1665	case HID_UP_PID | 0x83UL: /* Simultaneous Effects Max */
1666	dbg_hid("Maximum Effects - %d\n",value);
1667	return;
1668
1669	case HID_UP_PID | 0x7fUL:
1670	dbg_hid("PID Pool Report\n");
1671	return;
1672	}
1673
1674	switch (usage->type) {
1675	case EV_KEY:
1676	if (usage->code == 0) /* Key 0 is "unassigned", not KEY_UNKNOWN */
1677	return;
1678	break;
1679
1680	case EV_REL:
1681	if (usage->code == REL_WHEEL_HI_RES ||
1682	usage->code == REL_HWHEEL_HI_RES) {
1683	hidinput_handle_scroll(usage, input, value);
1684	return;
1685	}
1686	break;
1687
1688	case EV_ABS:
1689	if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
1690	usage->code == ABS_VOLUME) {
1691	int count = abs(value);
1692	int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
1693	int i;
1694
1695	for (i = 0; i < count; i++) {
1696	input_event(dev: input, EV_KEY, code: direction, value: 1);
1697	input_sync(dev: input);
1698	input_event(dev: input, EV_KEY, code: direction, value: 0);
1699	input_sync(dev: input);
1700	}
1701	return;
1702
1703	} else if (((*quirks & HID_QUIRK_X_INVERT) && usage->code == ABS_X) ||
1704	((*quirks & HID_QUIRK_Y_INVERT) && usage->code == ABS_Y))
1705	value = field->logical_maximum - value;
1706	break;
1707	}
1708
1709	/*
1710	* Ignore reports for absolute data if the data didn't change. This is
1711	* not only an optimization but also fixes 'dead' key reports. Some
1712	* RollOver implementations for localized keys (like BACKSLASH/PIPE; HID
1713	* 0x31 and 0x32) report multiple keys, even though a localized keyboard
1714	* can only have one of them physically available. The 'dead' keys
1715	* report constant 0. As all map to the same keycode, they'd confuse
1716	* the input layer. If we filter the 'dead' keys on the HID level, we
1717	* skip the keycode translation and only forward real events.
1718	*/
1719	if (!(field->flags & (HID_MAIN_ITEM_RELATIVE |
1720	HID_MAIN_ITEM_BUFFERED_BYTE)) &&
1721	(field->flags & HID_MAIN_ITEM_VARIABLE) &&
1722	usage->usage_index < field->maxusage &&
1723	value == field->value[usage->usage_index])
1724	return;
1725
1726	/* report the usage code as scancode if the key status has changed */
1727	if (usage->type == EV_KEY &&
1728	(!test_bit(usage->code, input->key)) == value)
1729	input_event(dev: input, EV_MSC, MSC_SCAN, value: usage->hid);
1730
1731	input_event(dev: input, type: usage->type, code: usage->code, value);
1732
1733	if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
1734	usage->type == EV_KEY && value) {
1735	input_sync(dev: input);
1736	input_event(dev: input, type: usage->type, code: usage->code, value: 0);
1737	}
1738	}
1739
1740	void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1741	{
1742	struct hid_input *hidinput;
1743
1744	if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1745	return;
1746
1747	list_for_each_entry(hidinput, &hid->inputs, list)
1748	input_sync(dev: hidinput->input);
1749	}
1750	EXPORT_SYMBOL_GPL(hidinput_report_event);
1751
1752	static int hidinput_find_field(struct hid_device *hid, unsigned int type,
1753	unsigned int code, struct hid_field **field)
1754	{
1755	struct hid_report *report;
1756	int i, j;
1757
1758	list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1759	for (i = 0; i < report->maxfield; i++) {
1760	*field = report->field[i];
1761	for (j = 0; j < (*field)->maxusage; j++)
1762	if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1763	return j;
1764	}
1765	}
1766	return -1;
1767	}
1768
1769	struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1770	{
1771	struct hid_report *report;
1772	struct hid_field *field;
1773	int i, j;
1774
1775	list_for_each_entry(report,
1776	&hid->report_enum[HID_OUTPUT_REPORT].report_list,
1777	list) {
1778	for (i = 0; i < report->maxfield; i++) {
1779	field = report->field[i];
1780	for (j = 0; j < field->maxusage; j++)
1781	if (field->usage[j].type == EV_LED)
1782	return field;
1783	}
1784	}
1785	return NULL;
1786	}
1787	EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1788
1789	unsigned int hidinput_count_leds(struct hid_device *hid)
1790	{
1791	struct hid_report *report;
1792	struct hid_field *field;
1793	int i, j;
1794	unsigned int count = 0;
1795
1796	list_for_each_entry(report,
1797	&hid->report_enum[HID_OUTPUT_REPORT].report_list,
1798	list) {
1799	for (i = 0; i < report->maxfield; i++) {
1800	field = report->field[i];
1801	for (j = 0; j < field->maxusage; j++)
1802	if (field->usage[j].type == EV_LED &&
1803	field->value[j])
1804	count += 1;
1805	}
1806	}
1807	return count;
1808	}
1809	EXPORT_SYMBOL_GPL(hidinput_count_leds);
1810
1811	static void hidinput_led_worker(struct work_struct *work)
1812	{
1813	struct hid_device *hid = container_of(work, struct hid_device,
1814	led_work);
1815	struct hid_field *field;
1816	struct hid_report *report;
1817	int ret;
1818	u32 len;
1819	__u8 *buf;
1820
1821	field = hidinput_get_led_field(hid);
1822	if (!field)
1823	return;
1824
1825	/*
1826	* field->report is accessed unlocked regarding HID core. So there might
1827	* be another incoming SET-LED request from user-space, which changes
1828	* the LED state while we assemble our outgoing buffer. However, this
1829	* doesn't matter as hid_output_report() correctly converts it into a
1830	* boolean value no matter what information is currently set on the LED
1831	* field (even garbage). So the remote device will always get a valid
1832	* request.
1833	* And in case we send a wrong value, a next led worker is spawned
1834	* for every SET-LED request so the following worker will send the
1835	* correct value, guaranteed!
1836	*/
1837
1838	report = field->report;
1839
1840	/* use custom SET_REPORT request if possible (asynchronous) */
1841	if (hid->ll_driver->request)
1842	return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT);
1843
1844	/* fall back to generic raw-output-report */
1845	len = hid_report_len(report);
1846	buf = hid_alloc_report_buf(report, GFP_KERNEL);
1847	if (!buf)
1848	return;
1849
1850	hid_output_report(report, data: buf);
1851	/* synchronous output report */
1852	ret = hid_hw_output_report(hdev: hid, buf, len);
1853	if (ret == -ENOSYS)
1854	hid_hw_raw_request(hdev: hid, reportnum: report->id, buf, len, rtype: HID_OUTPUT_REPORT,
1855	reqtype: HID_REQ_SET_REPORT);
1856	kfree(objp: buf);
1857	}
1858
1859	static int hidinput_input_event(struct input_dev *dev, unsigned int type,
1860	unsigned int code, int value)
1861	{
1862	struct hid_device *hid = input_get_drvdata(dev);
1863	struct hid_field *field;
1864	int offset;
1865
1866	if (type == EV_FF)
1867	return input_ff_event(dev, type, code, value);
1868
1869	if (type != EV_LED)
1870	return -1;
1871
1872	if ((offset = hidinput_find_field(hid, type, code, field: &field)) == -1) {
1873	hid_warn(dev, "event field not found\n");
1874	return -1;
1875	}
1876
1877	hid_set_field(field, offset, value);
1878
1879	schedule_work(work: &hid->led_work);
1880	return 0;
1881	}
1882
1883	static int hidinput_open(struct input_dev *dev)
1884	{
1885	struct hid_device *hid = input_get_drvdata(dev);
1886
1887	return hid_hw_open(hdev: hid);
1888	}
1889
1890	static void hidinput_close(struct input_dev *dev)
1891	{
1892	struct hid_device *hid = input_get_drvdata(dev);
1893
1894	hid_hw_close(hdev: hid);
1895	}
1896
1897	static bool __hidinput_change_resolution_multipliers(struct hid_device *hid,
1898	struct hid_report *report, bool use_logical_max)
1899	{
1900	struct hid_usage *usage;
1901	bool update_needed = false;
1902	bool get_report_completed = false;
1903	int i, j;
1904
1905	if (report->maxfield == 0)
1906	return false;
1907
1908	for (i = 0; i < report->maxfield; i++) {
1909	__s32 value = use_logical_max ?
1910	report->field[i]->logical_maximum :
1911	report->field[i]->logical_minimum;
1912
1913	/* There is no good reason for a Resolution
1914	* Multiplier to have a count other than 1.
1915	* Ignore that case.
1916	*/
1917	if (report->field[i]->report_count != 1)
1918	continue;
1919
1920	for (j = 0; j < report->field[i]->maxusage; j++) {
1921	usage = &report->field[i]->usage[j];
1922
1923	if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER)
1924	continue;
1925
1926	/*
1927	* If we have more than one feature within this
1928	* report we need to fill in the bits from the
1929	* others before we can overwrite the ones for the
1930	* Resolution Multiplier.
1931	*
1932	* But if we're not allowed to read from the device,
1933	* we just bail. Such a device should not exist
1934	* anyway.
1935	*/
1936	if (!get_report_completed && report->maxfield > 1) {
1937	if (hid->quirks & HID_QUIRK_NO_INIT_REPORTS)
1938	return update_needed;
1939
1940	hid_hw_request(hdev: hid, report, reqtype: HID_REQ_GET_REPORT);
1941	hid_hw_wait(hdev: hid);
1942	get_report_completed = true;
1943	}
1944
1945	report->field[i]->value[j] = value;
1946	update_needed = true;
1947	}
1948	}
1949
1950	return update_needed;
1951	}
1952
1953	static void hidinput_change_resolution_multipliers(struct hid_device *hid)
1954	{
1955	struct hid_report_enum *rep_enum;
1956	struct hid_report *rep;
1957	int ret;
1958
1959	rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1960	list_for_each_entry(rep, &rep_enum->report_list, list) {
1961	bool update_needed = __hidinput_change_resolution_multipliers(hid,
1962	report: rep, use_logical_max: true);
1963
1964	if (update_needed) {
1965	ret = __hid_request(hid, rep, reqtype: HID_REQ_SET_REPORT);
1966	if (ret) {
1967	__hidinput_change_resolution_multipliers(hid,
1968	report: rep, use_logical_max: false);
1969	return;
1970	}
1971	}
1972	}
1973
1974	/* refresh our structs */
1975	hid_setup_resolution_multiplier(hid);
1976	}
1977
1978	static void report_features(struct hid_device *hid)
1979	{
1980	struct hid_driver *drv = hid->driver;
1981	struct hid_report_enum *rep_enum;
1982	struct hid_report *rep;
1983	struct hid_usage *usage;
1984	int i, j;
1985
1986	rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1987	list_for_each_entry(rep, &rep_enum->report_list, list)
1988	for (i = 0; i < rep->maxfield; i++) {
1989	/* Ignore if report count is out of bounds. */
1990	if (rep->field[i]->report_count < 1)
1991	continue;
1992
1993	for (j = 0; j < rep->field[i]->maxusage; j++) {
1994	usage = &rep->field[i]->usage[j];
1995
1996	/* Verify if Battery Strength feature is available */
1997	if (usage->hid == HID_DC_BATTERYSTRENGTH)
1998	hidinput_setup_battery(dev: hid, report_type: HID_FEATURE_REPORT,
1999	field: rep->field[i], is_percentage: false);
2000
2001	if (drv->feature_mapping)
2002	drv->feature_mapping(hid, rep->field[i], usage);
2003	}
2004	}
2005	}
2006
2007	static struct hid_input *hidinput_allocate(struct hid_device *hid,
2008	unsigned int application)
2009	{
2010	struct hid_input *hidinput = kzalloc(size: sizeof(*hidinput), GFP_KERNEL);
2011	struct input_dev *input_dev = input_allocate_device();
2012	const char *suffix = NULL;
2013	size_t suffix_len, name_len;
2014
2015	if (!hidinput || !input_dev)
2016	goto fail;
2017
2018	if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) &&
2019	hid->maxapplication > 1) {
2020	switch (application) {
2021	case HID_GD_KEYBOARD:
2022	suffix = "Keyboard";
2023	break;
2024	case HID_GD_KEYPAD:
2025	suffix = "Keypad";
2026	break;
2027	case HID_GD_MOUSE:
2028	suffix = "Mouse";
2029	break;
2030	case HID_DG_PEN:
2031	/*
2032	* yes, there is an issue here:
2033	* DG_PEN -> "Stylus"
2034	* DG_STYLUS -> "Pen"
2035	* But changing this now means users with config snippets
2036	* will have to change it and the test suite will not be happy.
2037	*/
2038	suffix = "Stylus";
2039	break;
2040	case HID_DG_STYLUS:
2041	suffix = "Pen";
2042	break;
2043	case HID_DG_TOUCHSCREEN:
2044	suffix = "Touchscreen";
2045	break;
2046	case HID_DG_TOUCHPAD:
2047	suffix = "Touchpad";
2048	break;
2049	case HID_GD_SYSTEM_CONTROL:
2050	suffix = "System Control";
2051	break;
2052	case HID_CP_CONSUMER_CONTROL:
2053	suffix = "Consumer Control";
2054	break;
2055	case HID_GD_WIRELESS_RADIO_CTLS:
2056	suffix = "Wireless Radio Control";
2057	break;
2058	case HID_GD_SYSTEM_MULTIAXIS:
2059	suffix = "System Multi Axis";
2060	break;
2061	default:
2062	break;
2063	}
2064	}
2065
2066	if (suffix) {
2067	name_len = strlen(hid->name);
2068	suffix_len = strlen(suffix);
2069	if ((name_len < suffix_len) ||
2070	strcmp(hid->name + name_len - suffix_len, suffix)) {
2071	hidinput->name = kasprintf(GFP_KERNEL, fmt: "%s %s",
2072	hid->name, suffix);
2073	if (!hidinput->name)
2074	goto fail;
2075	}
2076	}
2077
2078	input_set_drvdata(dev: input_dev, data: hid);
2079	input_dev->event = hidinput_input_event;
2080	input_dev->open = hidinput_open;
2081	input_dev->close = hidinput_close;
2082	input_dev->setkeycode = hidinput_setkeycode;
2083	input_dev->getkeycode = hidinput_getkeycode;
2084
2085	input_dev->name = hidinput->name ? hidinput->name : hid->name;
2086	input_dev->phys = hid->phys;
2087	input_dev->uniq = hid->uniq;
2088	input_dev->id.bustype = hid->bus;
2089	input_dev->id.vendor = hid->vendor;
2090	input_dev->id.product = hid->product;
2091	input_dev->id.version = hid->version;
2092	input_dev->dev.parent = &hid->dev;
2093
2094	hidinput->input = input_dev;
2095	hidinput->application = application;
2096	list_add_tail(new: &hidinput->list, head: &hid->inputs);
2097
2098	INIT_LIST_HEAD(list: &hidinput->reports);
2099
2100	return hidinput;
2101
2102	fail:
2103	kfree(objp: hidinput);
2104	input_free_device(dev: input_dev);
2105	hid_err(hid, "Out of memory during hid input probe\n");
2106	return NULL;
2107	}
2108
2109	static bool hidinput_has_been_populated(struct hid_input *hidinput)
2110	{
2111	int i;
2112	unsigned long r = 0;
2113
2114	for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++)
2115	r |= hidinput->input->evbit[i];
2116
2117	for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++)
2118	r |= hidinput->input->keybit[i];
2119
2120	for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++)
2121	r |= hidinput->input->relbit[i];
2122
2123	for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++)
2124	r |= hidinput->input->absbit[i];
2125
2126	for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++)
2127	r |= hidinput->input->mscbit[i];
2128
2129	for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++)
2130	r |= hidinput->input->ledbit[i];
2131
2132	for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++)
2133	r |= hidinput->input->sndbit[i];
2134
2135	for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++)
2136	r |= hidinput->input->ffbit[i];
2137
2138	for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++)
2139	r |= hidinput->input->swbit[i];
2140
2141	return !!r;
2142	}
2143
2144	static void hidinput_cleanup_hidinput(struct hid_device *hid,
2145	struct hid_input *hidinput)
2146	{
2147	struct hid_report *report;
2148	int i, k;
2149
2150	list_del(entry: &hidinput->list);
2151	input_free_device(dev: hidinput->input);
2152	kfree(objp: hidinput->name);
2153
2154	for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
2155	if (k == HID_OUTPUT_REPORT &&
2156	hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
2157	continue;
2158
2159	list_for_each_entry(report, &hid->report_enum[k].report_list,
2160	list) {
2161
2162	for (i = 0; i < report->maxfield; i++)
2163	if (report->field[i]->hidinput == hidinput)
2164	report->field[i]->hidinput = NULL;
2165	}
2166	}
2167
2168	kfree(objp: hidinput);
2169	}
2170
2171	static struct hid_input *hidinput_match(struct hid_report *report)
2172	{
2173	struct hid_device *hid = report->device;
2174	struct hid_input *hidinput;
2175
2176	list_for_each_entry(hidinput, &hid->inputs, list) {
2177	if (hidinput->report &&
2178	hidinput->report->id == report->id)
2179	return hidinput;
2180	}
2181
2182	return NULL;
2183	}
2184
2185	static struct hid_input *hidinput_match_application(struct hid_report *report)
2186	{
2187	struct hid_device *hid = report->device;
2188	struct hid_input *hidinput;
2189
2190	list_for_each_entry(hidinput, &hid->inputs, list) {
2191	if (hidinput->application == report->application)
2192	return hidinput;
2193
2194	/*
2195	* Keep SystemControl and ConsumerControl applications together
2196	* with the main keyboard, if present.
2197	*/
2198	if ((report->application == HID_GD_SYSTEM_CONTROL ||
2199	report->application == HID_CP_CONSUMER_CONTROL) &&
2200	hidinput->application == HID_GD_KEYBOARD) {
2201	return hidinput;
2202	}
2203	}
2204
2205	return NULL;
2206	}
2207
2208	static inline void hidinput_configure_usages(struct hid_input *hidinput,
2209	struct hid_report *report)
2210	{
2211	int i, j, k;
2212	int first_field_index = 0;
2213	int slot_collection_index = -1;
2214	int prev_collection_index = -1;
2215	unsigned int slot_idx = 0;
2216	struct hid_field *field;
2217
2218	/*
2219	* First tag all the fields that are part of a slot,
2220	* a slot needs to have one Contact ID in the collection
2221	*/
2222	for (i = 0; i < report->maxfield; i++) {
2223	field = report->field[i];
2224
2225	/* ignore fields without usage */
2226	if (field->maxusage < 1)
2227	continue;
2228
2229	/*
2230	* janitoring when collection_index changes
2231	*/
2232	if (prev_collection_index != field->usage->collection_index) {
2233	prev_collection_index = field->usage->collection_index;
2234	first_field_index = i;
2235	}
2236
2237	/*
2238	* if we already found a Contact ID in the collection,
2239	* tag and continue to the next.
2240	*/
2241	if (slot_collection_index == field->usage->collection_index) {
2242	field->slot_idx = slot_idx;
2243	continue;
2244	}
2245
2246	/* check if the current field has Contact ID */
2247	for (j = 0; j < field->maxusage; j++) {
2248	if (field->usage[j].hid == HID_DG_CONTACTID) {
2249	slot_collection_index = field->usage->collection_index;
2250	slot_idx++;
2251
2252	/*
2253	* mark all previous fields and this one in the
2254	* current collection to be slotted.
2255	*/
2256	for (k = first_field_index; k <= i; k++)
2257	report->field[k]->slot_idx = slot_idx;
2258	break;
2259	}
2260	}
2261	}
2262
2263	for (i = 0; i < report->maxfield; i++)
2264	for (j = 0; j < report->field[i]->maxusage; j++)
2265	hidinput_configure_usage(hidinput, field: report->field[i],
2266	usage: report->field[i]->usage + j,
2267	usage_index: j);
2268	}
2269
2270	/*
2271	* Register the input device; print a message.
2272	* Configure the input layer interface
2273	* Read all reports and initialize the absolute field values.
2274	*/
2275
2276	int hidinput_connect(struct hid_device *hid, unsigned int force)
2277	{
2278	struct hid_driver *drv = hid->driver;
2279	struct hid_report *report;
2280	struct hid_input *next, *hidinput = NULL;
2281	unsigned int application;
2282	int i, k;
2283
2284	INIT_LIST_HEAD(list: &hid->inputs);
2285	INIT_WORK(&hid->led_work, hidinput_led_worker);
2286
2287	hid->status &= ~HID_STAT_DUP_DETECTED;
2288
2289	if (!force) {
2290	for (i = 0; i < hid->maxcollection; i++) {
2291	struct hid_collection *col = &hid->collection[i];
2292	if (col->type == HID_COLLECTION_APPLICATION ||
2293	col->type == HID_COLLECTION_PHYSICAL)
2294	if (IS_INPUT_APPLICATION(col->usage))
2295	break;
2296	}
2297
2298	if (i == hid->maxcollection)
2299	return -1;
2300	}
2301
2302	report_features(hid);
2303
2304	for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
2305	if (k == HID_OUTPUT_REPORT &&
2306	hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
2307	continue;
2308
2309	list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
2310
2311	if (!report->maxfield)
2312	continue;
2313
2314	application = report->application;
2315
2316	/*
2317	* Find the previous hidinput report attached
2318	* to this report id.
2319	*/
2320	if (hid->quirks & HID_QUIRK_MULTI_INPUT)
2321	hidinput = hidinput_match(report);
2322	else if (hid->maxapplication > 1 &&
2323	(hid->quirks & HID_QUIRK_INPUT_PER_APP))
2324	hidinput = hidinput_match_application(report);
2325
2326	if (!hidinput) {
2327	hidinput = hidinput_allocate(hid, application);
2328	if (!hidinput)
2329	goto out_unwind;
2330	}
2331
2332	hidinput_configure_usages(hidinput, report);
2333
2334	if (hid->quirks & HID_QUIRK_MULTI_INPUT)
2335	hidinput->report = report;
2336
2337	list_add_tail(new: &report->hidinput_list,
2338	head: &hidinput->reports);
2339	}
2340	}
2341
2342	hidinput_change_resolution_multipliers(hid);
2343
2344	list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
2345	if (drv->input_configured &&
2346	drv->input_configured(hid, hidinput))
2347	goto out_unwind;
2348
2349	if (!hidinput_has_been_populated(hidinput)) {
2350	/* no need to register an input device not populated */
2351	hidinput_cleanup_hidinput(hid, hidinput);
2352	continue;
2353	}
2354
2355	if (input_register_device(hidinput->input))
2356	goto out_unwind;
2357	hidinput->registered = true;
2358	}
2359
2360	if (list_empty(head: &hid->inputs)) {
2361	hid_err(hid, "No inputs registered, leaving\n");
2362	goto out_unwind;
2363	}
2364
2365	if (hid->status & HID_STAT_DUP_DETECTED)
2366	hid_dbg(hid,
2367	"Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n");
2368
2369	return 0;
2370
2371	out_unwind:
2372	/* unwind the ones we already registered */
2373	hidinput_disconnect(hid);
2374
2375	return -1;
2376	}
2377	EXPORT_SYMBOL_GPL(hidinput_connect);
2378
2379	void hidinput_disconnect(struct hid_device *hid)
2380	{
2381	struct hid_input *hidinput, *next;
2382
2383	hidinput_cleanup_battery(dev: hid);
2384
2385	list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
2386	list_del(entry: &hidinput->list);
2387	if (hidinput->registered)
2388	input_unregister_device(hidinput->input);
2389	else
2390	input_free_device(dev: hidinput->input);
2391	kfree(objp: hidinput->name);
2392	kfree(objp: hidinput);
2393	}
2394
2395	/* led_work is spawned by input_dev callbacks, but doesn't access the
2396	* parent input_dev at all. Once all input devices are removed, we
2397	* know that led_work will never get restarted, so we can cancel it
2398	* synchronously and are safe. */
2399	cancel_work_sync(work: &hid->led_work);
2400	}
2401	EXPORT_SYMBOL_GPL(hidinput_disconnect);
2402
2403	#ifdef CONFIG_HID_KUNIT_TEST
2404	#include "hid-input-test.c"
2405	#endif
2406