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Merge tag 'for-linus-2022121301' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux-block.git] / drivers / hid / hid-input.c
CommitLineData
1a59d1b8 1// SPDX-License-Identifier: GPL-2.0-or-later
dde5845a 2/*
dde5845a 3 * Copyright (c) 2000-2001 Vojtech Pavlik
7d39e849 4 * Copyright (c) 2006-2010 Jiri Kosina
dde5845a
JK		 5 *
6 * HID to Linux Input mapping
7 */
8
9/*
dde5845a
JK		 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>
dde5845a 19
dde5845a 20#include <linux/hid.h>
c080d89a 21#include <linux/hid-debug.h>
dde5845a 22
bbc21cfd
JF		 23#include "hid-ids.h"
24
dde5845a
JK		 25#define unk KEY_UNKNOWN
26
27static 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,
437f3b19 37 122,123, 90, 91, 85,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,
dde5845a 38 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
1fe8736d 39 unk,unk,unk,unk,unk,unk,179,180,unk,unk,unk,unk,unk,unk,unk,unk,
dde5845a 40 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
437f3b19 41 unk,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,unk,unk,unk,unk,
dde5845a
JK		 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
46static 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
5c20000a
BT		 51struct 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
048cddfd
BT		 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 *
5c20000a
BT		 70 * To accommodate slotted devices, the slot priority is
71 * defined in the next 8 bits (defined by 0xff - slot).
72 *
048cddfd
BT		 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 */
5c20000a
BT		 78static 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 },
048cddfd
BT		 94};
95
022e8c4d
JS		 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))
8aa45b54 100#define map_msc(c) hid_map_usage(hidinput, usage, &bit, &max, EV_MSC, (c))
dde5845a 101
022e8c4d
JS		 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))
dde5845a 106
a0bf0ea8
DT		 107static bool match_scancode(struct hid_usage *usage,
108 unsigned int cur_idx, unsigned int scancode)
fe7ba31f 109{
a0bf0ea8 110 return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode;
fe7ba31f
MR		 111}
112
a0bf0ea8
DT		 113static bool match_keycode(struct hid_usage *usage,
114 unsigned int cur_idx, unsigned int keycode)
fe7ba31f 115{
f5854fad
DT		 116 /*
117 * We should exclude unmapped usages when doing lookup by keycode.
118 */
119 return (usage->type == EV_KEY && usage->code == keycode);
a0bf0ea8 120}
58b93995 121
a0bf0ea8
DT		 122static bool match_index(struct hid_usage *usage,
123 unsigned int cur_idx, unsigned int idx)
124{
125 return cur_idx == idx;
fe7ba31f
MR		 126}
127
a0bf0ea8
DT		 128typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage,
129 unsigned int cur_idx, unsigned int val);
130
fe7ba31f 131static struct hid_usage *hidinput_find_key(struct hid_device *hid,
a0bf0ea8
DT		 132 hid_usage_cmp_t match,
133 unsigned int value,
134 unsigned int *usage_idx)
fe7ba31f 135{
a0bf0ea8 136 unsigned int i, j, k, cur_idx = 0;
fe7ba31f
MR		 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++) {
a0bf0ea8 143 for (j = 0; j < report->field[i]->maxusage; j++) {
fe7ba31f 144 usage = report->field[i]->usage + j;
f5854fad 145 if (usage->type == EV_KEY || usage->type == 0) {
a0bf0ea8
DT		 146 if (match(usage, cur_idx, value)) {
147 if (usage_idx)
148 *usage_idx = cur_idx;
149 return usage;
150 }
151 cur_idx++;
152 }
fe7ba31f
MR		 153 }
154 }
155 }
156 }
157 return NULL;
158}
159
a0bf0ea8
DT		 160static 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_index, ke->index, index);
169 else if (input_scancode_to_scalar(ke, &scancode) == 0)
170 usage = hidinput_find_key(hid, match_scancode, scancode, index);
171 else
172 usage = NULL;
173
174 return usage;
175}
176
58b93995 177static int hidinput_getkeycode(struct input_dev *dev,
a0bf0ea8 178 struct input_keymap_entry *ke)
fe7ba31f 179{
f202df60 180 struct hid_device *hid = input_get_drvdata(dev);
fe7ba31f 181 struct hid_usage *usage;
a0bf0ea8 182 unsigned int scancode, index;
77b29662 183
a0bf0ea8 184 usage = hidinput_locate_usage(hid, ke, &index);
fe7ba31f 185 if (usage) {
f5854fad
DT		 186 ke->keycode = usage->type == EV_KEY ?
187 usage->code : KEY_RESERVED;
a0bf0ea8
DT		 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));
fe7ba31f
MR		 192 return 0;
193 }
a0bf0ea8 194
fe7ba31f
MR		 195 return -EINVAL;
196}
197
58b93995 198static int hidinput_setkeycode(struct input_dev *dev,
a0bf0ea8
DT		 199 const struct input_keymap_entry *ke,
200 unsigned int *old_keycode)
fe7ba31f 201{
f202df60 202 struct hid_device *hid = input_get_drvdata(dev);
fe7ba31f 203 struct hid_usage *usage;
77b29662 204
a0bf0ea8 205 usage = hidinput_locate_usage(hid, ke, NULL);
fe7ba31f 206 if (usage) {
f5854fad
DT		 207 *old_keycode = usage->type == EV_KEY ?
208 usage->code : KEY_RESERVED;
3e6a950d 209 usage->type = EV_KEY;
a0bf0ea8 210 usage->code = ke->keycode;
77b29662 211
a0bf0ea8 212 clear_bit(*old_keycode, dev->keybit);
fe7ba31f 213 set_bit(usage->code, dev->keybit);
587d1452 214 dbg_hid("Assigned keycode %d to HID usage code %x\n",
a0bf0ea8
DT		 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_keycode, *old_keycode, NULL))
222 set_bit(*old_keycode, dev->keybit);
77b29662 223
fe7ba31f
MR		 224 return 0;
225 }
77b29662 226
fe7ba31f
MR		 227 return -EINVAL;
228}
229
ad0e669b 230
4ea6e4ff
NK		 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 *
83ed79c5
DT		 243 * Only exponent 1 length units are processed. Centimeters and inches are
244 * converted to millimeters. Degrees are converted to radians.
4ea6e4ff 245 */
37cf6e6f 246__s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
4ea6e4ff
NK		 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 */
b73b2da0
NK		 263 switch (code) {
264 case ABS_X:
265 case ABS_Y:
266 case ABS_Z:
37cf6e6f
BT		 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:
ad0e669b 273 if (field->unit == 0x11) { /* If centimeters */
83ed79c5
DT		 274 /* Convert to millimeters */
275 unit_exponent += 1;
ad0e669b 276 } else if (field->unit == 0x13) { /* If inches */
83ed79c5
DT		 277 /* Convert to millimeters */
278 prev = physical_extents;
279 physical_extents *= 254;
280 if (physical_extents < prev)
4ea6e4ff 281 return 0;
83ed79c5 282 unit_exponent -= 1;
ad0e669b 283 } else {
4ea6e4ff
NK		 284 return 0;
285 }
b73b2da0
NK		 286 break;
287
288 case ABS_RX:
289 case ABS_RY:
290 case ABS_RZ:
c0bf5741 291 case ABS_WHEEL:
b73b2da0
NK		 292 case ABS_TILT_X:
293 case ABS_TILT_Y:
4ea6e4ff
NK		 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 }
b73b2da0
NK		 304 break;
305
306 default:
4ea6e4ff
NK		 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 */
ccdd6994 326 return DIV_ROUND_CLOSEST(logical_extents, physical_extents);
4ea6e4ff 327}
37cf6e6f 328EXPORT_SYMBOL_GPL(hidinput_calc_abs_res);
4ea6e4ff 329
4f5ca836
JF		 330#ifdef CONFIG_HID_BATTERY_STRENGTH
331static 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,
45d9c273
JF		 336 POWER_SUPPLY_PROP_STATUS,
337 POWER_SUPPLY_PROP_SCOPE,
4f5ca836
JF		 338};
339
bbc21cfd 340#define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */
652aa6a9 341#define HID_BATTERY_QUIRK_FEATURE (1 << 1) /* ask for feature report */
5d9374cf 342#define HID_BATTERY_QUIRK_IGNORE (1 << 2) /* completely ignore the battery */
037c1aae 343#define HID_BATTERY_QUIRK_AVOID_QUERY (1 << 3) /* do not query the battery */
bbc21cfd
JF		 344
345static const struct hid_device_id hid_battery_quirks[] = {
4cc85417 346 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
cbd366be
RS		 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 },
652aa6a9 352 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
cbd366be 353 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI),
652aa6a9 354 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
da940db4
KR		 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 },
0c47935c
DN		 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 },
5d9374cf
AP		 361 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM,
362 USB_DEVICE_ID_ELECOM_BM084),
363 HID_BATTERY_QUIRK_IGNORE },
0fd79184
BL		 364 { HID_USB_DEVICE(USB_VENDOR_ID_SYMBOL,
365 USB_DEVICE_ID_SYMBOL_SCANNER_3),
366 HID_BATTERY_QUIRK_IGNORE },
a767ffea
NH		 367 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK,
368 USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD),
369 HID_BATTERY_QUIRK_IGNORE },
7940fb03
HG		 370 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH,
371 USB_DEVICE_ID_LOGITECH_DINOVO_EDGE_KBD),
372 HID_BATTERY_QUIRK_IGNORE },
7c38e769
SM		 373 { HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550_TOUCHSCREEN),
374 HID_BATTERY_QUIRK_IGNORE },
14902f89
HG		 375 { HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550VE_TOUCHSCREEN),
376 HID_BATTERY_QUIRK_IGNORE },
037c1aae
JE		 377 { HID_USB_DEVICE(USB_VENDOR_ID_UGEE, USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_L),
378 HID_BATTERY_QUIRK_AVOID_QUERY },
b74edf9b
TD		 379 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_15),
380 HID_BATTERY_QUIRK_IGNORE },
f3193ea1
KK		 381 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_15T_DR100),
382 HID_BATTERY_QUIRK_IGNORE },
decfe496
ED		 383 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_15),
384 HID_BATTERY_QUIRK_IGNORE },
b5539722
ZTV		 385 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_SURFACE_GO_TOUCHSCREEN),
386 HID_BATTERY_QUIRK_IGNORE },
db925d80
ML		 387 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_SURFACE_GO2_TOUCHSCREEN),
388 HID_BATTERY_QUIRK_IGNORE },
3a47fa7b
SK		 389 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_LENOVO_YOGA_C630_TOUCHSCREEN),
390 HID_BATTERY_QUIRK_IGNORE },
bbc21cfd
JF		 391 {}
392};
393
394static unsigned find_battery_quirk(struct hid_device *hdev)
395{
396 unsigned quirks = 0;
397 const struct hid_device_id *match;
398
399 match = hid_match_id(hdev, hid_battery_quirks);
400 if (match != NULL)
401 quirks = match->driver_data;
402
403 return quirks;
404}
405
581c4484
DT		 406static int hidinput_scale_battery_capacity(struct hid_device *dev,
407 int value)
408{
409 if (dev->battery_min < dev->battery_max &&
410 value >= dev->battery_min && value <= dev->battery_max)
411 value = ((value - dev->battery_min) * 100) /
412 (dev->battery_max - dev->battery_min);
413
414 return value;
415}
416
417static int hidinput_query_battery_capacity(struct hid_device *dev)
418{
419 u8 *buf;
420 int ret;
421
4f57cace 422 buf = kmalloc(4, GFP_KERNEL);
581c4484
DT		 423 if (!buf)
424 return -ENOMEM;
425
4f57cace 426 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 4,
581c4484 427 dev->battery_report_type, HID_REQ_GET_REPORT);
4f57cace 428 if (ret < 2) {
581c4484
DT		 429 kfree(buf);
430 return -ENODATA;
431 }
432
433 ret = hidinput_scale_battery_capacity(dev, buf[1]);
434 kfree(buf);
435 return ret;
436}
437
4f5ca836
JF		 438static int hidinput_get_battery_property(struct power_supply *psy,
439 enum power_supply_property prop,
440 union power_supply_propval *val)
441{
297d716f 442 struct hid_device *dev = power_supply_get_drvdata(psy);
581c4484 443 int value;
4f5ca836
JF		 444 int ret = 0;
445
446 switch (prop) {
447 case POWER_SUPPLY_PROP_PRESENT:
448 case POWER_SUPPLY_PROP_ONLINE:
449 val->intval = 1;
450 break;
451
452 case POWER_SUPPLY_PROP_CAPACITY:
2e210bbb
DT		 453 if (dev->battery_status != HID_BATTERY_REPORTED &&
454 !dev->battery_avoid_query) {
581c4484
DT		 455 value = hidinput_query_battery_capacity(dev);
456 if (value < 0)
457 return value;
458 } else {
459 value = dev->battery_capacity;
c5a92aa3
DN		 460 }
461
581c4484 462 val->intval = value;
4f5ca836
JF		 463 break;
464
465 case POWER_SUPPLY_PROP_MODEL_NAME:
466 val->strval = dev->name;
467 break;
468
c5a92aa3 469 case POWER_SUPPLY_PROP_STATUS:
2e210bbb
DT		 470 if (dev->battery_status != HID_BATTERY_REPORTED &&
471 !dev->battery_avoid_query) {
581c4484
DT		 472 value = hidinput_query_battery_capacity(dev);
473 if (value < 0)
474 return value;
475
476 dev->battery_capacity = value;
2e210bbb 477 dev->battery_status = HID_BATTERY_QUERIED;
581c4484
DT		 478 }
479
2e210bbb 480 if (dev->battery_status == HID_BATTERY_UNKNOWN)
581c4484 481 val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
581c4484
DT		 482 else
483 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
c5a92aa3
DN		 484 break;
485
45d9c273
JF		 486 case POWER_SUPPLY_PROP_SCOPE:
487 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
488 break;
489
4f5ca836
JF		 490 default:
491 ret = -EINVAL;
492 break;
493 }
494
495 return ret;
496}
497
9de07a4e
JC		 498static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
499 struct hid_field *field, bool is_percentage)
4f5ca836 500{
581c4484 501 struct power_supply_desc *psy_desc;
297d716f 502 struct power_supply_config psy_cfg = { .drv_data = dev, };
bbc21cfd 503 unsigned quirks;
2f2e3f6d 504 s32 min, max;
581c4484 505 int error;
2f2e3f6d 506
581c4484
DT		 507 if (dev->battery)
508 return 0; /* already initialized? */
4f5ca836 509
5d9374cf
AP		 510 quirks = find_battery_quirk(dev);
511
512 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
513 dev->bus, dev->vendor, dev->product, dev->version, quirks);
514
515 if (quirks & HID_BATTERY_QUIRK_IGNORE)
581c4484 516 return 0;
5d9374cf 517
297d716f 518 psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL);
581c4484
DT		 519 if (!psy_desc)
520 return -ENOMEM;
4f5ca836 521
09223865
DT		 522 psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery",
523 strlen(dev->uniq) ?
524 dev->uniq : dev_name(&dev->dev));
581c4484
DT		 525 if (!psy_desc->name) {
526 error = -ENOMEM;
527 goto err_free_mem;
297d716f
KK		 528 }
529
530 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY;
531 psy_desc->properties = hidinput_battery_props;
532 psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props);
533 psy_desc->use_for_apm = 0;
534 psy_desc->get_property = hidinput_get_battery_property;
4f5ca836 535
2f2e3f6d
JF		 536 min = field->logical_minimum;
537 max = field->logical_maximum;
538
9de07a4e 539 if (is_percentage || (quirks & HID_BATTERY_QUIRK_PERCENT)) {
bbc21cfd
JF		 540 min = 0;
541 max = 100;
542 }
543
652aa6a9
JF		 544 if (quirks & HID_BATTERY_QUIRK_FEATURE)
545 report_type = HID_FEATURE_REPORT;
546
4f5ca836
JF		 547 dev->battery_min = min;
548 dev->battery_max = max;
fb8ac91b 549 dev->battery_report_type = report_type;
2f2e3f6d 550 dev->battery_report_id = field->report->id;
4f5ca836 551
2e210bbb
DT		 552 /*
553 * Stylus is normally not connected to the device and thus we
554 * can't query the device and get meaningful battery strength.
555 * We have to wait for the device to report it on its own.
556 */
557 dev->battery_avoid_query = report_type == HID_INPUT_REPORT &&
558 field->physical == HID_DG_STYLUS;
559
037c1aae
JE		 560 if (quirks & HID_BATTERY_QUIRK_AVOID_QUERY)
561 dev->battery_avoid_query = true;
562
297d716f
KK		 563 dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg);
564 if (IS_ERR(dev->battery)) {
581c4484
DT		 565 error = PTR_ERR(dev->battery);
566 hid_warn(dev, "can't register power supply: %d\n", error);
567 goto err_free_name;
4f5ca836 568 }
2f2e3f6d 569
581c4484
DT		 570 power_supply_powers(dev->battery, &dev->dev);
571 return 0;
572
573err_free_name:
574 kfree(psy_desc->name);
575err_free_mem:
576 kfree(psy_desc);
577 dev->battery = NULL;
578 return error;
4f5ca836
JF		 579}
580
581static void hidinput_cleanup_battery(struct hid_device *dev)
582{
0621809e
KK		 583 const struct power_supply_desc *psy_desc;
584
297d716f 585 if (!dev->battery)
4f5ca836
JF		 586 return;
587
0621809e 588 psy_desc = dev->battery->desc;
297d716f 589 power_supply_unregister(dev->battery);
0621809e
KK		 590 kfree(psy_desc->name);
591 kfree(psy_desc);
297d716f 592 dev->battery = NULL;
4f5ca836 593}
581c4484
DT		 594
595static void hidinput_update_battery(struct hid_device *dev, int value)
596{
0152b29c
DT		 597 int capacity;
598
581c4484
DT		 599 if (!dev->battery)
600 return;
601
602 if (value == 0 || value < dev->battery_min || value > dev->battery_max)
603 return;
604
0152b29c
DT		 605 capacity = hidinput_scale_battery_capacity(dev, value);
606
2e210bbb 607 if (dev->battery_status != HID_BATTERY_REPORTED ||
c6838eee 608 capacity != dev->battery_capacity ||
609 ktime_after(ktime_get_coarse(), dev->battery_ratelimit_time)) {
0152b29c 610 dev->battery_capacity = capacity;
2e210bbb 611 dev->battery_status = HID_BATTERY_REPORTED;
c6838eee 612 dev->battery_ratelimit_time =
613 ktime_add_ms(ktime_get_coarse(), 30 * 1000);
0152b29c
DT		 614 power_supply_changed(dev->battery);
615 }
581c4484 616}
4f5ca836 617#else /* !CONFIG_HID_BATTERY_STRENGTH */
581c4484 618static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
9de07a4e 619 struct hid_field *field, bool is_percentage)
4f5ca836 620{
581c4484 621 return 0;
4f5ca836
JF		 622}
623
624static void hidinput_cleanup_battery(struct hid_device *dev)
625{
626}
581c4484
DT		 627
628static void hidinput_update_battery(struct hid_device *dev, int value)
629{
630}
4f5ca836
JF		 631#endif /* CONFIG_HID_BATTERY_STRENGTH */
632
bcfa8d14
TW		 633static bool hidinput_field_in_collection(struct hid_device *device, struct hid_field *field,
634 unsigned int type, unsigned int usage)
635{
636 struct hid_collection *collection;
637
638 collection = &device->collection[field->usage->collection_index];
639
640 return collection->type == type && collection->usage == usage;
641}
642
dde5845a 643static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
048cddfd 644 struct hid_usage *usage, unsigned int usage_index)
dde5845a
JK		 645{
646 struct input_dev *input = hidinput->input;
e0712985 647 struct hid_device *device = input_get_drvdata(input);
5c20000a 648 const struct usage_priority *usage_priority = NULL;
3715ade9 649 int max = 0, code;
048cddfd 650 unsigned int i = 0;
dde5845a
JK		 651 unsigned long *bit = NULL;
652
653 field->hidinput = hidinput;
654
dde5845a
JK		 655 if (field->flags & HID_MAIN_ITEM_CONSTANT)
656 goto ignore;
657
cc6b54aa
BT		 658 /* Ignore if report count is out of bounds. */
659 if (field->report_count < 1)
660 goto ignore;
661
82eb1219
JK		 662 /* only LED usages are supported in output fields */
663 if (field->report_type == HID_OUTPUT_REPORT &&
664 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
82eb1219
JK		 665 goto ignore;
666 }
667
048cddfd
BT		 668 /* assign a priority based on the static list declared here */
669 for (i = 0; i < ARRAY_SIZE(hidinput_usages_priorities); i++) {
5c20000a
BT		 670 if (usage->hid == hidinput_usages_priorities[i].usage) {
671 usage_priority = &hidinput_usages_priorities[i];
672
048cddfd
BT		 673 field->usages_priorities[usage_index] =
674 (ARRAY_SIZE(hidinput_usages_priorities) - i) << 8;
675 break;
676 }
677 }
678
5c20000a
BT		 679 /*
680 * For slotted devices, we need to also add the slot index
681 * in the priority.
682 */
683 if (usage_priority && usage_priority->global)
684 field->usages_priorities[usage_index] |=
685 usage_priority->slot_overwrite;
686 else
687 field->usages_priorities[usage_index] |=
688 (0xff - field->slot_idx) << 16;
689
c500c971
JS		 690 if (device->driver->input_mapping) {
691 int ret = device->driver->input_mapping(device, hidinput, field,
692 usage, &bit, &max);
693 if (ret > 0)
694 goto mapped;
695 if (ret < 0)
696 goto ignore;
697 }
698
dde5845a 699 switch (usage->hid & HID_USAGE_PAGE) {
880d29f1
JS		 700 case HID_UP_UNDEFINED:
701 goto ignore;
dde5845a 702
880d29f1
JS		 703 case HID_UP_KEYBOARD:
704 set_bit(EV_REP, input->evbit);
dde5845a 705
880d29f1
JS		 706 if ((usage->hid & HID_USAGE) < 256) {
707 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
708 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
709 } else
710 map_key(KEY_UNKNOWN);
dde5845a 711
880d29f1 712 break;
dde5845a 713
880d29f1 714 case HID_UP_BUTTON:
7f978b9b 715 code = ((usage->hid - 1) & HID_USAGE);
dde5845a 716
880d29f1
JS		 717 switch (field->application) {
718 case HID_GD_MOUSE:
1874542d 719 case HID_GD_POINTER: code += BTN_MOUSE; break;
cf2f765f 720 case HID_GD_JOYSTICK:
fc99f22c
DM		 721 if (code <= 0xf)
722 code += BTN_JOYSTICK;
723 else
f8e86d05
IR		 724 code += BTN_TRIGGER_HAPPY - 0x10;
725 break;
726 case HID_GD_GAMEPAD:
727 if (code <= 0xf)
728 code += BTN_GAMEPAD;
729 else
730 code += BTN_TRIGGER_HAPPY - 0x10;
fc99f22c 731 break;
bcfa8d14
TW		 732 case HID_CP_CONSUMER_CONTROL:
733 if (hidinput_field_in_collection(device, field,
734 HID_COLLECTION_NAMED_ARRAY,
735 HID_CP_PROGRAMMABLEBUTTONS)) {
736 if (code <= 0x1d)
737 code += KEY_MACRO1;
738 else
739 code += BTN_TRIGGER_HAPPY - 0x1e;
7fc48fd6 740 break;
bcfa8d14 741 }
7fc48fd6 742 fallthrough;
880d29f1
JS		 743 default:
744 switch (field->physical) {
745 case HID_GD_MOUSE:
1874542d
FF		 746 case HID_GD_POINTER: code += BTN_MOUSE; break;
747 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
748 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break;
749 default: code += BTN_MISC;
dde5845a 750 }
880d29f1 751 }
dde5845a 752
880d29f1
JS		 753 map_key(code);
754 break;
755
756 case HID_UP_SIMULATION:
757 switch (usage->hid & 0xffff) {
758 case 0xba: map_abs(ABS_RUDDER); break;
759 case 0xbb: map_abs(ABS_THROTTLE); break;
760 case 0xc4: map_abs(ABS_GAS); break;
761 case 0xc5: map_abs(ABS_BRAKE); break;
762 case 0xc8: map_abs(ABS_WHEEL); break;
763 default: goto ignore;
764 }
765 break;
766
767 case HID_UP_GENDESK:
768 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
769 switch (usage->hid & 0xf) {
770 case 0x1: map_key_clear(KEY_POWER); break;
771 case 0x2: map_key_clear(KEY_SLEEP); break;
772 case 0x3: map_key_clear(KEY_WAKEUP); break;
437f3b19
JW		 773 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
774 case 0x5: map_key_clear(KEY_MENU); break;
775 case 0x6: map_key_clear(KEY_PROG1); break;
776 case 0x7: map_key_clear(KEY_HELP); break;
777 case 0x8: map_key_clear(KEY_EXIT); break;
778 case 0x9: map_key_clear(KEY_SELECT); break;
779 case 0xa: map_key_clear(KEY_RIGHT); break;
780 case 0xb: map_key_clear(KEY_LEFT); break;
781 case 0xc: map_key_clear(KEY_UP); break;
782 case 0xd: map_key_clear(KEY_DOWN); break;
783 case 0xe: map_key_clear(KEY_POWER2); break;
784 case 0xf: map_key_clear(KEY_RESTART); break;
880d29f1 785 default: goto unknown;
dde5845a
JK		 786 }
787 break;
880d29f1 788 }
dde5845a 789
c01908a1
DT		 790 if ((usage->hid & 0xf0) == 0xb0) { /* SC - Display */
791 switch (usage->hid & 0xf) {
792 case 0x05: map_key_clear(KEY_SWITCHVIDEOMODE); break;
793 default: goto ignore;
794 }
795 break;
796 }
797
1989dada
BT		 798 /*
799 * Some lazy vendors declare 255 usages for System Control,
800 * leading to the creation of ABS_X|Y axis and too many others.
801 * It wouldn't be a problem if joydev doesn't consider the
802 * device as a joystick then.
803 */
804 if (field->application == HID_GD_SYSTEM_CONTROL)
805 goto ignore;
806
880d29f1 807 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */
dde5845a 808 switch (usage->hid) {
880d29f1
JS		 809 case HID_GD_UP: usage->hat_dir = 1; break;
810 case HID_GD_DOWN: usage->hat_dir = 5; break;
811 case HID_GD_RIGHT: usage->hat_dir = 3; break;
812 case HID_GD_LEFT: usage->hat_dir = 7; break;
813 default: goto unknown;
dde5845a 814 }
880d29f1
JS		 815 if (field->dpad) {
816 map_abs(field->dpad);
817 goto ignore;
d4ae650a 818 }
880d29f1 819 map_abs(ABS_HAT0X);
dde5845a 820 break;
880d29f1 821 }
dde5845a 822
880d29f1
JS		 823 switch (usage->hid) {
824 /* These usage IDs map directly to the usage codes. */
825 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
826 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
79346d62
BT		 827 if (field->flags & HID_MAIN_ITEM_RELATIVE)
828 map_rel(usage->hid & 0xf);
829 else
830 map_abs_clear(usage->hid & 0xf);
831 break;
832
2dc702c9
PH		 833 case HID_GD_WHEEL:
834 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
835 set_bit(REL_WHEEL, input->relbit);
836 map_rel(REL_WHEEL_HI_RES);
837 } else {
838 map_abs(usage->hid & 0xf);
839 }
840 break;
841 case HID_GD_SLIDER: case HID_GD_DIAL:
880d29f1
JS		 842 if (field->flags & HID_MAIN_ITEM_RELATIVE)
843 map_rel(usage->hid & 0xf);
844 else
845 map_abs(usage->hid & 0xf);
846 break;
dde5845a 847
880d29f1
JS		 848 case HID_GD_HATSWITCH:
849 usage->hat_min = field->logical_minimum;
850 usage->hat_max = field->logical_maximum;
851 map_abs(ABS_HAT0X);
852 break;
dde5845a 853
880d29f1
JS		 854 case HID_GD_START: map_key_clear(BTN_START); break;
855 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
dde5845a 856
61df56be
HG		 857 case HID_GD_RFKILL_BTN:
858 /* MS wireless radio ctl extension, also check CA */
6e7edabf 859 if (field->application == HID_GD_WIRELESS_RADIO_CTLS) {
61df56be
HG		 860 map_key_clear(KEY_RFKILL);
861 /* We need to simulate the btn release */
862 field->flags |= HID_MAIN_ITEM_RELATIVE;
863 break;
864 }
6b554275 865 goto unknown;
61df56be 866
880d29f1
JS		 867 default: goto unknown;
868 }
dde5845a 869
880d29f1
JS		 870 break;
871
872 case HID_UP_LED:
873 switch (usage->hid & 0xffff) { /* HID-Value: */
874 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */
875 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */
876 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */
877 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */
878 case 0x05: map_led (LED_KANA); break; /* "Kana" */
879 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */
880 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */
881 case 0x09: map_led (LED_MUTE); break; /* "Mute" */
882 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */
883 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */
884 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */
885
886 default: goto ignore;
887 }
888 break;
889
890 case HID_UP_DIGITIZER:
8473a93d
TT		 891 if ((field->application & 0xff) == 0x01) /* Digitizer */
892 __set_bit(INPUT_PROP_POINTER, input->propbit);
893 else if ((field->application & 0xff) == 0x02) /* Pen */
894 __set_bit(INPUT_PROP_DIRECT, input->propbit);
895
880d29f1 896 switch (usage->hid & 0xff) {
8c8b01c3
FB		 897 case 0x00: /* Undefined */
898 goto ignore;
899
880d29f1
JS		 900 case 0x30: /* TipPressure */
901 if (!test_bit(BTN_TOUCH, input->keybit)) {
902 device->quirks |= HID_QUIRK_NOTOUCH;
903 set_bit(EV_KEY, input->evbit);
904 set_bit(BTN_TOUCH, input->keybit);
dde5845a 905 }
880d29f1 906 map_abs_clear(ABS_PRESSURE);
dde5845a
JK		 907 break;
908
880d29f1 909 case 0x32: /* InRange */
3c2b0dbd
BT		 910 switch (field->physical) {
911 case HID_DG_PUCK:
912 map_key(BTN_TOOL_MOUSE);
913 break;
914 case HID_DG_FINGER:
915 map_key(BTN_TOOL_FINGER);
916 break;
917 default:
918 /*
919 * If the physical is not given,
920 * rely on the application.
921 */
922 if (!field->physical) {
923 switch (field->application) {
924 case HID_DG_TOUCHSCREEN:
925 case HID_DG_TOUCHPAD:
926 map_key_clear(BTN_TOOL_FINGER);
927 break;
928 default:
929 map_key_clear(BTN_TOOL_PEN);
930 }
931 } else {
932 map_key(BTN_TOOL_PEN);
933 }
934 break;
dde5845a
JK		 935 }
936 break;
937
581c4484 938 case 0x3b: /* Battery Strength */
9de07a4e 939 hidinput_setup_battery(device, HID_INPUT_REPORT, field, false);
581c4484 940 usage->type = EV_PWR;
505f394f 941 return;
581c4484 942
880d29f1
JS		 943 case 0x3c: /* Invert */
944 map_key_clear(BTN_TOOL_RUBBER);
dde5845a
JK		 945 break;
946
b73b2da0
NK		 947 case 0x3d: /* X Tilt */
948 map_abs_clear(ABS_TILT_X);
949 break;
950
951 case 0x3e: /* Y Tilt */
952 map_abs_clear(ABS_TILT_Y);
953 break;
954
880d29f1
JS		 955 case 0x33: /* Touch */
956 case 0x42: /* TipSwitch */
957 case 0x43: /* TipSwitch2 */
958 device->quirks &= ~HID_QUIRK_NOTOUCH;
959 map_key_clear(BTN_TOUCH);
960 break;
dde5845a 961
880d29f1
JS		 962 case 0x44: /* BarrelSwitch */
963 map_key_clear(BTN_STYLUS);
964 break;
dde5845a 965
654c192a
PC		 966 case 0x45: /* ERASER */
967 /*
968 * This event is reported when eraser tip touches the surface.
969 * Actual eraser (BTN_TOOL_RUBBER) is set by Invert usage when
970 * tool gets in proximity.
971 */
972 map_key_clear(BTN_TOUCH);
973 break;
974
50b63697 975 case 0x46: /* TabletPick */
368c9664 976 case 0x5a: /* SecondaryBarrelSwitch */
50b63697
NK		 977 map_key_clear(BTN_STYLUS2);
978 break;
979
368c9664 980 case 0x5b: /* TransducerSerialNumber */
f3e82521 981 case 0x6e: /* TransducerSerialNumber2 */
8aa45b54 982 map_msc(MSC_SERIAL);
368c9664
PC		 983 break;
984
880d29f1
JS		 985 default: goto unknown;
986 }
987 break;
988
f3dddf24
DT		 989 case HID_UP_TELEPHONY:
990 switch (usage->hid & HID_USAGE) {
991 case 0x2f: map_key_clear(KEY_MICMUTE); break;
992 case 0xb0: map_key_clear(KEY_NUMERIC_0); break;
993 case 0xb1: map_key_clear(KEY_NUMERIC_1); break;
994 case 0xb2: map_key_clear(KEY_NUMERIC_2); break;
995 case 0xb3: map_key_clear(KEY_NUMERIC_3); break;
996 case 0xb4: map_key_clear(KEY_NUMERIC_4); break;
997 case 0xb5: map_key_clear(KEY_NUMERIC_5); break;
998 case 0xb6: map_key_clear(KEY_NUMERIC_6); break;
999 case 0xb7: map_key_clear(KEY_NUMERIC_7); break;
1000 case 0xb8: map_key_clear(KEY_NUMERIC_8); break;
1001 case 0xb9: map_key_clear(KEY_NUMERIC_9); break;
1002 case 0xba: map_key_clear(KEY_NUMERIC_STAR); break;
1003 case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break;
1004 case 0xbc: map_key_clear(KEY_NUMERIC_A); break;
1005 case 0xbd: map_key_clear(KEY_NUMERIC_B); break;
1006 case 0xbe: map_key_clear(KEY_NUMERIC_C); break;
1007 case 0xbf: map_key_clear(KEY_NUMERIC_D); break;
1008 default: goto ignore;
1009 }
1010 break;
1011
437f3b19 1012 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */
880d29f1
JS		 1013 switch (usage->hid & HID_USAGE) {
1014 case 0x000: goto ignore;
437f3b19
JW		 1015 case 0x030: map_key_clear(KEY_POWER); break;
1016 case 0x031: map_key_clear(KEY_RESTART); break;
1017 case 0x032: map_key_clear(KEY_SLEEP); break;
880d29f1 1018 case 0x034: map_key_clear(KEY_SLEEP); break;
437f3b19 1019 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break;
880d29f1
JS		 1020 case 0x036: map_key_clear(BTN_MISC); break;
1021
437f3b19
JW		 1022 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */
1023 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */
1024 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */
1025 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */
1026 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */
1027 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */
1028 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */
1029 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */
1030 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */
1031
1032 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */
1033 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */
1034 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */
1035 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */
1036 case 0x069: map_key_clear(KEY_RED); break;
1037 case 0x06a: map_key_clear(KEY_GREEN); break;
1038 case 0x06b: map_key_clear(KEY_BLUE); break;
1039 case 0x06c: map_key_clear(KEY_YELLOW); break;
f7b3d85a 1040 case 0x06d: map_key_clear(KEY_ASPECT_RATIO); break;
437f3b19 1041
f362e690
OG		 1042 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break;
1043 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break;
1044 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break;
1045 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break;
1046 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break;
1047 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break;
1048
7975a1d6
DT		 1049 case 0x079: map_key_clear(KEY_KBDILLUMUP); break;
1050 case 0x07a: map_key_clear(KEY_KBDILLUMDOWN); break;
1051 case 0x07c: map_key_clear(KEY_KBDILLUMTOGGLE); break;
1052
437f3b19 1053 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break;
880d29f1 1054 case 0x083: map_key_clear(KEY_LAST); break;
437f3b19 1055 case 0x084: map_key_clear(KEY_ENTER); break;
880d29f1
JS		 1056 case 0x088: map_key_clear(KEY_PC); break;
1057 case 0x089: map_key_clear(KEY_TV); break;
1058 case 0x08a: map_key_clear(KEY_WWW); break;
1059 case 0x08b: map_key_clear(KEY_DVD); break;
1060 case 0x08c: map_key_clear(KEY_PHONE); break;
1061 case 0x08d: map_key_clear(KEY_PROGRAM); break;
1062 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break;
1063 case 0x08f: map_key_clear(KEY_GAMES); break;
1064 case 0x090: map_key_clear(KEY_MEMO); break;
1065 case 0x091: map_key_clear(KEY_CD); break;
1066 case 0x092: map_key_clear(KEY_VCR); break;
1067 case 0x093: map_key_clear(KEY_TUNER); break;
1068 case 0x094: map_key_clear(KEY_EXIT); break;
1069 case 0x095: map_key_clear(KEY_HELP); break;
1070 case 0x096: map_key_clear(KEY_TAPE); break;
1071 case 0x097: map_key_clear(KEY_TV2); break;
1072 case 0x098: map_key_clear(KEY_SAT); break;
1073 case 0x09a: map_key_clear(KEY_PVR); break;
1074
1075 case 0x09c: map_key_clear(KEY_CHANNELUP); break;
1076 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
1077 case 0x0a0: map_key_clear(KEY_VCR2); break;
1078
1079 case 0x0b0: map_key_clear(KEY_PLAY); break;
1080 case 0x0b1: map_key_clear(KEY_PAUSE); break;
1081 case 0x0b2: map_key_clear(KEY_RECORD); break;
1082 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
1083 case 0x0b4: map_key_clear(KEY_REWIND); break;
1084 case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
1085 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
1086 case 0x0b7: map_key_clear(KEY_STOPCD); break;
1087 case 0x0b8: map_key_clear(KEY_EJECTCD); break;
1088 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break;
437f3b19
JW		 1089 case 0x0b9: map_key_clear(KEY_SHUFFLE); break;
1090 case 0x0bf: map_key_clear(KEY_SLOW); break;
880d29f1
JS		 1091
1092 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
f362e690 1093 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break;
7b229b13 1094
9f4211bf
EO		 1095 case 0x0d5: map_key_clear(KEY_CAMERA_ACCESS_ENABLE); break;
1096 case 0x0d6: map_key_clear(KEY_CAMERA_ACCESS_DISABLE); break;
1097 case 0x0d7: map_key_clear(KEY_CAMERA_ACCESS_TOGGLE); break;
bfa26ba3 1098 case 0x0d8: map_key_clear(KEY_DICTATE); break;
7b229b13
DT		 1099 case 0x0d9: map_key_clear(KEY_EMOJI_PICKER); break;
1100
880d29f1
JS		 1101 case 0x0e0: map_abs_clear(ABS_VOLUME); break;
1102 case 0x0e2: map_key_clear(KEY_MUTE); break;
1103 case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
1104 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
1105 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
437f3b19 1106 case 0x0f5: map_key_clear(KEY_SLOW); break;
880d29f1 1107
f362e690 1108 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break;
880d29f1
JS		 1109 case 0x182: map_key_clear(KEY_BOOKMARKS); break;
1110 case 0x183: map_key_clear(KEY_CONFIG); break;
1111 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break;
1112 case 0x185: map_key_clear(KEY_EDITOR); break;
1113 case 0x186: map_key_clear(KEY_SPREADSHEET); break;
1114 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break;
1115 case 0x188: map_key_clear(KEY_PRESENTATION); break;
1116 case 0x189: map_key_clear(KEY_DATABASE); break;
1117 case 0x18a: map_key_clear(KEY_MAIL); break;
1118 case 0x18b: map_key_clear(KEY_NEWS); break;
1119 case 0x18c: map_key_clear(KEY_VOICEMAIL); break;
1120 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break;
1121 case 0x18e: map_key_clear(KEY_CALENDAR); break;
f362e690
OG		 1122 case 0x18f: map_key_clear(KEY_TASKMANAGER); break;
1123 case 0x190: map_key_clear(KEY_JOURNAL); break;
880d29f1
JS		 1124 case 0x191: map_key_clear(KEY_FINANCE); break;
1125 case 0x192: map_key_clear(KEY_CALC); break;
437f3b19 1126 case 0x193: map_key_clear(KEY_PLAYER); break;
880d29f1
JS		 1127 case 0x194: map_key_clear(KEY_FILE); break;
1128 case 0x196: map_key_clear(KEY_WWW); break;
0690535d 1129 case 0x199: map_key_clear(KEY_CHAT); break;
880d29f1
JS		 1130 case 0x19c: map_key_clear(KEY_LOGOFF); break;
1131 case 0x19e: map_key_clear(KEY_COFFEE); break;
f362e690
OG		 1132 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break;
1133 case 0x1a2: map_key_clear(KEY_APPSELECT); break;
5820e4d4
HG		 1134 case 0x1a3: map_key_clear(KEY_NEXT); break;
1135 case 0x1a4: map_key_clear(KEY_PREVIOUS); break;
880d29f1
JS		 1136 case 0x1a6: map_key_clear(KEY_HELP); break;
1137 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
1138 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break;
437f3b19 1139 case 0x1ae: map_key_clear(KEY_KEYBOARD); break;
f362e690 1140 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break;
5820e4d4 1141 case 0x1b4: map_key_clear(KEY_FILE); break;
437f3b19
JW		 1142 case 0x1b6: map_key_clear(KEY_IMAGES); break;
1143 case 0x1b7: map_key_clear(KEY_AUDIO); break;
1144 case 0x1b8: map_key_clear(KEY_VIDEO); break;
880d29f1
JS		 1145 case 0x1bc: map_key_clear(KEY_MESSENGER); break;
1146 case 0x1bd: map_key_clear(KEY_INFO); break;
ce856634 1147 case 0x1cb: map_key_clear(KEY_ASSISTANT); break;
880d29f1
JS		 1148 case 0x201: map_key_clear(KEY_NEW); break;
1149 case 0x202: map_key_clear(KEY_OPEN); break;
1150 case 0x203: map_key_clear(KEY_CLOSE); break;
1151 case 0x204: map_key_clear(KEY_EXIT); break;
1152 case 0x207: map_key_clear(KEY_SAVE); break;
1153 case 0x208: map_key_clear(KEY_PRINT); break;
1154 case 0x209: map_key_clear(KEY_PROPS); break;
1155 case 0x21a: map_key_clear(KEY_UNDO); break;
1156 case 0x21b: map_key_clear(KEY_COPY); break;
1157 case 0x21c: map_key_clear(KEY_CUT); break;
1158 case 0x21d: map_key_clear(KEY_PASTE); break;
1159 case 0x21f: map_key_clear(KEY_FIND); break;
1160 case 0x221: map_key_clear(KEY_SEARCH); break;
1161 case 0x222: map_key_clear(KEY_GOTO); break;
1162 case 0x223: map_key_clear(KEY_HOMEPAGE); break;
1163 case 0x224: map_key_clear(KEY_BACK); break;
1164 case 0x225: map_key_clear(KEY_FORWARD); break;
1165 case 0x226: map_key_clear(KEY_STOP); break;
1166 case 0x227: map_key_clear(KEY_REFRESH); break;
1167 case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
1168 case 0x22d: map_key_clear(KEY_ZOOMIN); break;
1169 case 0x22e: map_key_clear(KEY_ZOOMOUT); break;
1170 case 0x22f: map_key_clear(KEY_ZOOMRESET); break;
afbbaa1b 1171 case 0x232: map_key_clear(KEY_FULL_SCREEN); break;
880d29f1
JS		 1172 case 0x233: map_key_clear(KEY_SCROLLUP); break;
1173 case 0x234: map_key_clear(KEY_SCROLLDOWN); break;
2dc702c9
PH		 1174 case 0x238: /* AC Pan */
1175 set_bit(REL_HWHEEL, input->relbit);
1176 map_rel(REL_HWHEEL_HI_RES);
1177 break;
437f3b19 1178 case 0x23d: map_key_clear(KEY_EDIT); break;
880d29f1 1179 case 0x25f: map_key_clear(KEY_CANCEL); break;
437f3b19
JW		 1180 case 0x269: map_key_clear(KEY_INSERT); break;
1181 case 0x26a: map_key_clear(KEY_DELETE); break;
880d29f1
JS		 1182 case 0x279: map_key_clear(KEY_REDO); break;
1183
1184 case 0x289: map_key_clear(KEY_REPLY); break;
1185 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
1186 case 0x28c: map_key_clear(KEY_SEND); break;
1187
bd21d847
DT		 1188 case 0x29d: map_key_clear(KEY_KBD_LAYOUT_NEXT); break;
1189
327b89f0
WM		 1190 case 0x2a2: map_key_clear(KEY_ALL_APPLICATIONS); break;
1191
f974008f
OG		 1192 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break;
1193 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break;
1194 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break;
1195 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break;
1196 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break;
1197 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break;
1198
96dd8687
DT		 1199 case 0x29f: map_key_clear(KEY_SCALE); break;
1200
afdb5cce 1201 default: map_key_clear(KEY_UNKNOWN);
880d29f1
JS		 1202 }
1203 break;
1204
4f5ca836 1205 case HID_UP_GENDEVCTRLS:
581c4484
DT		 1206 switch (usage->hid) {
1207 case HID_DC_BATTERYSTRENGTH:
9de07a4e
JC		 1208 hidinput_setup_battery(device, HID_INPUT_REPORT, field, false);
1209 usage->type = EV_PWR;
1210 return;
1211 }
1212 goto unknown;
1213
1214 case HID_UP_BATTERY:
1215 switch (usage->hid) {
1216 case HID_BAT_ABSOLUTESTATEOFCHARGE:
1217 hidinput_setup_battery(device, HID_INPUT_REPORT, field, true);
581c4484 1218 usage->type = EV_PWR;
505f394f 1219 return;
581c4484
DT		 1220 }
1221 goto unknown;
4f5ca836 1222
880d29f1
JS		 1223 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
1224 set_bit(EV_REP, input->evbit);
1225 switch (usage->hid & HID_USAGE) {
1226 case 0x021: map_key_clear(KEY_PRINT); break;
1227 case 0x070: map_key_clear(KEY_HP); break;
1228 case 0x071: map_key_clear(KEY_CAMERA); break;
1229 case 0x072: map_key_clear(KEY_SOUND); break;
1230 case 0x073: map_key_clear(KEY_QUESTION); break;
1231 case 0x080: map_key_clear(KEY_EMAIL); break;
1232 case 0x081: map_key_clear(KEY_CHAT); break;
1233 case 0x082: map_key_clear(KEY_SEARCH); break;
1234 case 0x083: map_key_clear(KEY_CONNECT); break;
1235 case 0x084: map_key_clear(KEY_FINANCE); break;
1236 case 0x085: map_key_clear(KEY_SPORT); break;
1237 case 0x086: map_key_clear(KEY_SHOP); break;
929578ab
KYL		 1238 default: goto ignore;
1239 }
1240 break;
1241
1242 case HID_UP_HPVENDOR2:
1243 set_bit(EV_REP, input->evbit);
1244 switch (usage->hid & HID_USAGE) {
08fc9473 1245 case 0x001: map_key_clear(KEY_MICMUTE); break;
929578ab
KYL		 1246 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break;
1247 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break;
880d29f1
JS		 1248 default: goto ignore;
1249 }
1250 break;
dde5845a 1251
880d29f1
JS		 1252 case HID_UP_MSVENDOR:
1253 goto ignore;
dde5845a 1254
880d29f1
JS		 1255 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
1256 set_bit(EV_REP, input->evbit);
1257 goto ignore;
dde5845a 1258
880d29f1 1259 case HID_UP_LOGIVENDOR:
b466c1dd
SW		 1260 /* intentional fallback */
1261 case HID_UP_LOGIVENDOR2:
1262 /* intentional fallback */
1263 case HID_UP_LOGIVENDOR3:
880d29f1 1264 goto ignore;
fc99f22c 1265
880d29f1
JS		 1266 case HID_UP_PID:
1267 switch (usage->hid & HID_USAGE) {
1268 case 0xa4: map_key_clear(BTN_DEAD); break;
1269 default: goto ignore;
1270 }
1271 break;
dde5845a 1272
880d29f1
JS		 1273 default:
1274 unknown:
1275 if (field->report_size == 1) {
1276 if (field->report->type == HID_OUTPUT_REPORT) {
1277 map_led(LED_MISC);
dde5845a
JK		 1278 break;
1279 }
880d29f1 1280 map_key(BTN_MISC);
dde5845a 1281 break;
880d29f1
JS		 1282 }
1283 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
1284 map_rel(REL_MISC);
1285 break;
1286 }
1287 map_abs(ABS_MISC);
1288 break;
dde5845a
JK		 1289 }
1290
10bd065f 1291mapped:
35556bed
MZ		 1292 /* Mapping failed, bail out */
1293 if (!bit)
1294 return;
1295
4f388217
DT		 1296 if (device->driver->input_mapped &&
1297 device->driver->input_mapped(device, hidinput, field, usage,
1298 &bit, &max) < 0) {
1299 /*
1300 * The driver indicated that no further generic handling
1301 * of the usage is desired.
1302 */
1303 return;
1304 }
c500c971 1305
dde5845a
JK		 1306 set_bit(usage->type, input->evbit);
1307
190d7f02
BT		 1308 /*
1309 * This part is *really* controversial:
1310 * - HID aims at being generic so we should do our best to export
1311 * all incoming events
1312 * - HID describes what events are, so there is no reason for ABS_X
1313 * to be mapped to ABS_Y
1314 * - HID is using *_MISC+N as a default value, but nothing prevents
1315 * *_MISC+N to overwrite a legitimate even, which confuses userspace
1316 * (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different
1317 * processing)
1318 *
1319 * If devices still want to use this (at their own risk), they will
1320 * have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but
1321 * the default should be a reliable mapping.
1322 */
1323 while (usage->code <= max && test_and_set_bit(usage->code, bit)) {
1324 if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) {
1325 usage->code = find_next_zero_bit(bit,
1326 max + 1,
1327 usage->code);
1328 } else {
1329 device->status |= HID_STAT_DUP_DETECTED;
1330 goto ignore;
1331 }
1332 }
dde5845a
JK		 1333
1334 if (usage->code > max)
1335 goto ignore;
1336
dde5845a
JK		 1337 if (usage->type == EV_ABS) {
1338
1339 int a = field->logical_minimum;
1340 int b = field->logical_maximum;
1341
1342 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
1343 a = field->logical_minimum = 0;
1344 b = field->logical_maximum = 255;
1345 }
1346
1347 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
1348 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
1349 else input_set_abs_params(input, usage->code, a, b, 0, 0);
1350
4ea6e4ff
NK		 1351 input_abs_set_res(input, usage->code,
1352 hidinput_calc_abs_res(field, usage->code));
1353
6967b4d9
HR		 1354 /* use a larger default input buffer for MT devices */
1355 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
1356 input_set_events_per_packet(input, 60);
dde5845a
JK		 1357 }
1358
1359 if (usage->type == EV_ABS &&
1360 (usage->hat_min < usage->hat_max || usage->hat_dir)) {
1361 int i;
1362 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
1363 input_set_abs_params(input, i, -1, 1, 0, 0);
1364 set_bit(i, input->absbit);
1365 }
1366 if (usage->hat_dir && !field->dpad)
1367 field->dpad = usage->code;
1368 }
1369
2c1d8aea
JK		 1370 /* for those devices which produce Consumer volume usage as relative,
1371 * we emulate pressing volumeup/volumedown appropriate number of times
1372 * in hidinput_hid_event()
1373 */
1374 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1375 (usage->code == ABS_VOLUME)) {
1376 set_bit(KEY_VOLUMEUP, input->keybit);
1377 set_bit(KEY_VOLUMEDOWN, input->keybit);
1378 }
1379
c01d50d1
JK		 1380 if (usage->type == EV_KEY) {
1381 set_bit(EV_MSC, input->evbit);
1382 set_bit(MSC_SCAN, input->mscbit);
1383 }
1384
dde5845a 1385 return;
a635f9dd 1386
4f388217
DT		 1387ignore:
1388 usage->type = 0;
1389 usage->code = 0;
dde5845a
JK		 1390}
1391
2dc702c9
PH		 1392static void hidinput_handle_scroll(struct hid_usage *usage,
1393 struct input_dev *input,
1394 __s32 value)
1395{
1396 int code;
1397 int hi_res, lo_res;
1398
1399 if (value == 0)
1400 return;
1401
1402 if (usage->code == REL_WHEEL_HI_RES)
1403 code = REL_WHEEL;
1404 else
1405 code = REL_HWHEEL;
1406
1407 /*
1408 * Windows reports one wheel click as value 120. Where a high-res
1409 * scroll wheel is present, a fraction of 120 is reported instead.
1410 * Our REL_WHEEL_HI_RES axis does the same because all HW must
1411 * adhere to the 120 expectation.
1412 */
1413 hi_res = value * 120/usage->resolution_multiplier;
1414
1415 usage->wheel_accumulated += hi_res;
1416 lo_res = usage->wheel_accumulated/120;
1417 if (lo_res)
1418 usage->wheel_accumulated -= lo_res * 120;
1419
1420 input_event(input, EV_REL, code, lo_res);
1421 input_event(input, EV_REL, usage->code, hi_res);
1422}
1423
87562fcd
BT		 1424static void hid_report_release_tool(struct hid_report *report, struct input_dev *input,
1425 unsigned int tool)
1426{
1427 /* if the given tool is not currently reported, ignore */
1428 if (!test_bit(tool, input->key))
1429 return;
1430
1431 /*
1432 * if the given tool was previously set, release it,
1433 * release any TOUCH and send an EV_SYN
1434 */
1435 input_event(input, EV_KEY, BTN_TOUCH, 0);
1436 input_event(input, EV_KEY, tool, 0);
1437 input_event(input, EV_SYN, SYN_REPORT, 0);
1438
1439 report->tool = 0;
1440}
1441
1442static void hid_report_set_tool(struct hid_report *report, struct input_dev *input,
1443 unsigned int new_tool)
1444{
1445 if (report->tool != new_tool)
1446 hid_report_release_tool(report, input, report->tool);
1447
1448 input_event(input, EV_KEY, new_tool, 1);
1449 report->tool = new_tool;
1450}
1451
dde5845a
JK		 1452void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
1453{
1454 struct input_dev *input;
87562fcd 1455 struct hid_report *report = field->report;
b4482a4b 1456 unsigned *quirks = &hid->quirks;
dde5845a 1457
581c4484 1458 if (!usage->type)
dde5845a
JK		 1459 return;
1460
581c4484
DT		 1461 if (usage->type == EV_PWR) {
1462 hidinput_update_battery(hid, value);
1463 return;
1464 }
dde5845a 1465
581c4484 1466 if (!field->hidinput)
dde5845a
JK		 1467 return;
1468
581c4484
DT		 1469 input = field->hidinput->input;
1470
dde5845a
JK		 1471 if (usage->hat_min < usage->hat_max || usage->hat_dir) {
1472 int hat_dir = usage->hat_dir;
1473 if (!hat_dir)
1474 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
1475 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
1476 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);
fc99f22c
DM		 1477 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
1478 return;
1479 }
dde5845a 1480
883e0e36
NK		 1481 /*
1482 * Ignore out-of-range values as per HID specification,
c3883fe0
TK		 1483 * section 5.10 and 6.2.25, when NULL state bit is present.
1484 * When it's not, clamp the value to match Microsoft's input
1485 * driver as mentioned in "Required HID usages for digitizers":
1486 * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp
a688393b
JK		 1487 *
1488 * The logical_minimum < logical_maximum check is done so that we
1489 * don't unintentionally discard values sent by devices which
1490 * don't specify logical min and max.
883e0e36
NK		 1491 */
1492 if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
187ccd6c 1493 field->logical_minimum < field->logical_maximum) {
c3883fe0
TK		 1494 if (field->flags & HID_MAIN_ITEM_NULL_STATE &&
1495 (value < field->logical_minimum ||
1496 value > field->logical_maximum)) {
1497 dbg_hid("Ignoring out-of-range value %x\n", value);
1498 return;
1499 }
1500 value = clamp(value,
1501 field->logical_minimum,
1502 field->logical_maximum);
6da70669
JK		 1503 }
1504
f2d4ddfa 1505 switch (usage->hid) {
87562fcd
BT		 1506 case HID_DG_ERASER:
1507 report->tool_active |= !!value;
1508
1509 /*
1510 * if eraser is set, we must enforce BTN_TOOL_RUBBER
1511 * to accommodate for devices not following the spec.
1512 */
1513 if (value)
1514 hid_report_set_tool(report, input, BTN_TOOL_RUBBER);
1515 else if (report->tool != BTN_TOOL_RUBBER)
1516 /* value is off, tool is not rubber, ignore */
1517 return;
1518
1519 /* let hid-input set BTN_TOUCH */
1520 break;
1521
f2d4ddfa 1522 case HID_DG_INVERT:
87562fcd
BT		 1523 report->tool_active |= !!value;
1524
1525 /*
1526 * If invert is set, we store BTN_TOOL_RUBBER.
1527 */
1528 if (value)
1529 hid_report_set_tool(report, input, BTN_TOOL_RUBBER);
1530 else if (!report->tool_active)
1531 /* tool_active not set means Invert and Eraser are not set */
1532 hid_report_release_tool(report, input, BTN_TOOL_RUBBER);
1533
1534 /* no further processing */
dde5845a 1535 return;
dde5845a 1536
f2d4ddfa 1537 case HID_DG_INRANGE:
87562fcd
BT		 1538 report->tool_active |= !!value;
1539
1540 if (report->tool_active) {
1541 /*
1542 * if tool is not set but is marked as active,
1543 * assume ours
1544 */
1545 if (!report->tool)
8db8be9c
BT		 1546 report->tool = usage->code;
1547
1548 /* drivers may have changed the value behind our back, resend it */
1549 hid_report_set_tool(report, input, report->tool);
87562fcd
BT		 1550 } else {
1551 hid_report_release_tool(report, input, usage->code);
dde5845a 1552 }
87562fcd
BT		 1553
1554 /* reset tool_active for the next event */
1555 report->tool_active = false;
1556
1557 /* no further processing */
dde5845a 1558 return;
dde5845a 1559
87562fcd
BT		 1560 case HID_DG_TIPSWITCH:
1561 report->tool_active |= !!value;
1562
1563 /* if tool is set to RUBBER we should ignore the current value */
1564 if (report->tool == BTN_TOOL_RUBBER)
1565 return;
1566
1567 break;
1568
f2d4ddfa
BT		 1569 case HID_DG_TIPPRESSURE:
1570 if (*quirks & HID_QUIRK_NOTOUCH) {
1571 int a = field->logical_minimum;
1572 int b = field->logical_maximum;
1573
87562fcd
BT		 1574 if (value > a + ((b - a) >> 3)) {
1575 input_event(input, EV_KEY, BTN_TOUCH, 1);
1576 report->tool_active = true;
1577 }
f2d4ddfa
BT		 1578 }
1579 break;
dde5845a 1580
f2d4ddfa 1581 case HID_UP_PID | 0x83UL: /* Simultaneous Effects Max */
58037eb9 1582 dbg_hid("Maximum Effects - %d\n",value);
dde5845a 1583 return;
dde5845a 1584
f2d4ddfa 1585 case HID_UP_PID | 0x7fUL:
58037eb9 1586 dbg_hid("PID Pool Report\n");
dde5845a
JK		 1587 return;
1588 }
1589
f2d4ddfa
BT		 1590 switch (usage->type) {
1591 case EV_KEY:
1592 if (usage->code == 0) /* Key 0 is "unassigned", not KEY_UNKNOWN */
1593 return;
1594 break;
dde5845a 1595
f2d4ddfa
BT		 1596 case EV_REL:
1597 if (usage->code == REL_WHEEL_HI_RES ||
1598 usage->code == REL_HWHEEL_HI_RES) {
1599 hidinput_handle_scroll(usage, input, value);
1600 return;
1601 }
1602 break;
2dc702c9 1603
f2d4ddfa
BT		 1604 case EV_ABS:
1605 if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
1606 usage->code == ABS_VOLUME) {
1607 int count = abs(value);
1608 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
1609 int i;
1610
1611 for (i = 0; i < count; i++) {
1612 input_event(input, EV_KEY, direction, 1);
1613 input_sync(input);
1614 input_event(input, EV_KEY, direction, 0);
1615 input_sync(input);
1616 }
1617 return;
2c1d8aea 1618
f2d4ddfa
BT		 1619 } else if (((*quirks & HID_QUIRK_X_INVERT) && usage->code == ABS_X) ||
1620 ((*quirks & HID_QUIRK_Y_INVERT) && usage->code == ABS_Y))
1621 value = field->logical_maximum - value;
1622 break;
2c1d8aea
JK		 1623 }
1624
6ce901eb
DH		 1625 /*
1626 * Ignore reports for absolute data if the data didn't change. This is
1627 * not only an optimization but also fixes 'dead' key reports. Some
1628 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID
1629 * 0x31 and 0x32) report multiple keys, even though a localized keyboard
1630 * can only have one of them physically available. The 'dead' keys
1631 * report constant 0. As all map to the same keycode, they'd confuse
1632 * the input layer. If we filter the 'dead' keys on the HID level, we
1633 * skip the keycode translation and only forward real events.
1634 */
1635 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE |
1636 HID_MAIN_ITEM_BUFFERED_BYTE)) &&
8e7b3410 1637 (field->flags & HID_MAIN_ITEM_VARIABLE) &&
6ce901eb
DH		 1638 usage->usage_index < field->maxusage &&
1639 value == field->value[usage->usage_index])
1640 return;
1641
c01d50d1 1642 /* report the usage code as scancode if the key status has changed */
323ddaa8
JB		 1643 if (usage->type == EV_KEY &&
1644 (!test_bit(usage->code, input->key)) == value)
c01d50d1 1645 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
1fe8736d 1646
dde5845a
JK		 1647 input_event(input, usage->type, usage->code, value);
1648
3eb4351a
DT		 1649 if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
1650 usage->type == EV_KEY && value) {
1651 input_sync(input);
dde5845a 1652 input_event(input, usage->type, usage->code, 0);
3eb4351a 1653 }
dde5845a
JK		 1654}
1655
1656void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1657{
1658 struct hid_input *hidinput;
1659
24750f3e
HR		 1660 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1661 return;
1662
dde5845a
JK		 1663 list_for_each_entry(hidinput, &hid->inputs, list)
1664 input_sync(hidinput->input);
1665}
229695e5 1666EXPORT_SYMBOL_GPL(hidinput_report_event);
dde5845a 1667
5904a3f9
MW		 1668static int hidinput_find_field(struct hid_device *hid, unsigned int type,
1669 unsigned int code, struct hid_field **field)
dde5845a
JK		 1670{
1671 struct hid_report *report;
1672 int i, j;
1673
1674 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1675 for (i = 0; i < report->maxfield; i++) {
1676 *field = report->field[i];
1677 for (j = 0; j < (*field)->maxusage; j++)
1678 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1679 return j;
1680 }
1681 }
1682 return -1;
1683}
1684
4371ea82
DK		 1685struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1686{
1687 struct hid_report *report;
1688 struct hid_field *field;
1689 int i, j;
1690
1691 list_for_each_entry(report,
1692 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1693 list) {
1694 for (i = 0; i < report->maxfield; i++) {
1695 field = report->field[i];
1696 for (j = 0; j < field->maxusage; j++)
1697 if (field->usage[j].type == EV_LED)
1698 return field;
1699 }
1700 }
1701 return NULL;
1702}
1703EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1704
1705unsigned int hidinput_count_leds(struct hid_device *hid)
1706{
1707 struct hid_report *report;
1708 struct hid_field *field;
1709 int i, j;
1710 unsigned int count = 0;
1711
1712 list_for_each_entry(report,
1713 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1714 list) {
1715 for (i = 0; i < report->maxfield; i++) {
1716 field = report->field[i];
1717 for (j = 0; j < field->maxusage; j++)
1718 if (field->usage[j].type == EV_LED &&
1719 field->value[j])
1720 count += 1;
1721 }
1722 }
1723 return count;
1724}
1725EXPORT_SYMBOL_GPL(hidinput_count_leds);
1726
50c9d75b
DH		 1727static void hidinput_led_worker(struct work_struct *work)
1728{
1729 struct hid_device *hid = container_of(work, struct hid_device,
1730 led_work);
1731 struct hid_field *field;
1732 struct hid_report *report;
3064a03b
AM		 1733 int ret;
1734 u32 len;
50c9d75b
DH		 1735 __u8 *buf;
1736
1737 field = hidinput_get_led_field(hid);
1738 if (!field)
1739 return;
1740
1741 /*
1742 * field->report is accessed unlocked regarding HID core. So there might
1743 * be another incoming SET-LED request from user-space, which changes
1744 * the LED state while we assemble our outgoing buffer. However, this
1745 * doesn't matter as hid_output_report() correctly converts it into a
1746 * boolean value no matter what information is currently set on the LED
1747 * field (even garbage). So the remote device will always get a valid
1748 * request.
1749 * And in case we send a wrong value, a next led worker is spawned
1750 * for every SET-LED request so the following worker will send the
1751 * correct value, guaranteed!
1752 */
1753
1754 report = field->report;
1755
1756 /* use custom SET_REPORT request if possible (asynchronous) */
1757 if (hid->ll_driver->request)
1758 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT);
1759
1760 /* fall back to generic raw-output-report */
dabb05c6 1761 len = hid_report_len(report);
9d27f432 1762 buf = hid_alloc_report_buf(report, GFP_KERNEL);
50c9d75b
DH		 1763 if (!buf)
1764 return;
1765
1766 hid_output_report(report, buf);
1767 /* synchronous output report */
2ebaebcf
BT		 1768 ret = hid_hw_output_report(hid, buf, len);
1769 if (ret == -ENOSYS)
1770 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT,
1771 HID_REQ_SET_REPORT);
50c9d75b
DH		 1772 kfree(buf);
1773}
1774
1775static int hidinput_input_event(struct input_dev *dev, unsigned int type,
1776 unsigned int code, int value)
1777{
1778 struct hid_device *hid = input_get_drvdata(dev);
1779 struct hid_field *field;
1780 int offset;
1781
1782 if (type == EV_FF)
1783 return input_ff_event(dev, type, code, value);
1784
1785 if (type != EV_LED)
1786 return -1;
1787
1788 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
1789 hid_warn(dev, "event field not found\n");
1790 return -1;
1791 }
1792
1793 hid_set_field(field, offset, value);
1794
1795 schedule_work(&hid->led_work);
1796 return 0;
1797}
1798
7c379146
JK		 1799static int hidinput_open(struct input_dev *dev)
1800{
e0712985
DT		 1801 struct hid_device *hid = input_get_drvdata(dev);
1802
5bea7660 1803 return hid_hw_open(hid);
7c379146
JK		 1804}
1805
1806static void hidinput_close(struct input_dev *dev)
1807{
e0712985
DT		 1808 struct hid_device *hid = input_get_drvdata(dev);
1809
5bea7660 1810 hid_hw_close(hid);
7c379146
JK		 1811}
1812
d43c17ea
BT		 1813static bool __hidinput_change_resolution_multipliers(struct hid_device *hid,
1814 struct hid_report *report, bool use_logical_max)
2dc702c9 1815{
2dc702c9 1816 struct hid_usage *usage;
d43c17ea 1817 bool update_needed = false;
1ad273d6 1818 bool get_report_completed = false;
2dc702c9
PH		 1819 int i, j;
1820
d43c17ea
BT		 1821 if (report->maxfield == 0)
1822 return false;
2dc702c9 1823
d43c17ea
BT		 1824 for (i = 0; i < report->maxfield; i++) {
1825 __s32 value = use_logical_max ?
1826 report->field[i]->logical_maximum :
1827 report->field[i]->logical_minimum;
1828
1829 /* There is no good reason for a Resolution
1830 * Multiplier to have a count other than 1.
1831 * Ignore that case.
2dc702c9 1832 */
d43c17ea
BT		 1833 if (report->field[i]->report_count != 1)
1834 continue;
2dc702c9 1835
d43c17ea
BT		 1836 for (j = 0; j < report->field[i]->maxusage; j++) {
1837 usage = &report->field[i]->usage[j];
2dc702c9 1838
d43c17ea 1839 if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER)
2dc702c9
PH		 1840 continue;
1841
1ad273d6
PH		 1842 /*
1843 * If we have more than one feature within this
1844 * report we need to fill in the bits from the
1845 * others before we can overwrite the ones for the
1846 * Resolution Multiplier.
1847 *
1848 * But if we're not allowed to read from the device,
1849 * we just bail. Such a device should not exist
1850 * anyway.
1851 */
1852 if (!get_report_completed && report->maxfield > 1) {
1853 if (hid->quirks & HID_QUIRK_NO_INIT_REPORTS)
1854 return update_needed;
1855
1856 hid_hw_request(hid, report, HID_REQ_GET_REPORT);
1857 hid_hw_wait(hid);
1858 get_report_completed = true;
1859 }
1860
39b3c3a5 1861 report->field[i]->value[j] = value;
d43c17ea
BT		 1862 update_needed = true;
1863 }
1864 }
1865
1866 return update_needed;
1867}
2dc702c9 1868
d43c17ea
BT		 1869static void hidinput_change_resolution_multipliers(struct hid_device *hid)
1870{
1871 struct hid_report_enum *rep_enum;
1872 struct hid_report *rep;
1873 int ret;
2dc702c9 1874
d43c17ea
BT		 1875 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1876 list_for_each_entry(rep, &rep_enum->report_list, list) {
1877 bool update_needed = __hidinput_change_resolution_multipliers(hid,
1878 rep, true);
1879
1880 if (update_needed) {
1881 ret = __hid_request(hid, rep, HID_REQ_SET_REPORT);
1882 if (ret) {
1883 __hidinput_change_resolution_multipliers(hid,
1884 rep, false);
1885 return;
2dc702c9
PH		 1886 }
1887 }
2dc702c9
PH		 1888 }
1889
1890 /* refresh our structs */
1891 hid_setup_resolution_multiplier(hid);
1892}
1893
f635bd11
HR		 1894static void report_features(struct hid_device *hid)
1895{
1896 struct hid_driver *drv = hid->driver;
1897 struct hid_report_enum *rep_enum;
1898 struct hid_report *rep;
581c4484 1899 struct hid_usage *usage;
f635bd11
HR		 1900 int i, j;
1901
f635bd11
HR		 1902 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1903 list_for_each_entry(rep, &rep_enum->report_list, list)
cc6b54aa
BT		 1904 for (i = 0; i < rep->maxfield; i++) {
1905 /* Ignore if report count is out of bounds. */
1906 if (rep->field[i]->report_count < 1)
1907 continue;
1908
c5a92aa3 1909 for (j = 0; j < rep->field[i]->maxusage; j++) {
581c4484
DT		 1910 usage = &rep->field[i]->usage[j];
1911
c5a92aa3 1912 /* Verify if Battery Strength feature is available */
581c4484
DT		 1913 if (usage->hid == HID_DC_BATTERYSTRENGTH)
1914 hidinput_setup_battery(hid, HID_FEATURE_REPORT,
9de07a4e 1915 rep->field[i], false);
c5a92aa3
DN		 1916
1917 if (drv->feature_mapping)
581c4484 1918 drv->feature_mapping(hid, rep->field[i], usage);
c5a92aa3 1919 }
cc6b54aa 1920 }
f635bd11
HR		 1921}
1922
c554bb04
BT		 1923static struct hid_input *hidinput_allocate(struct hid_device *hid,
1924 unsigned int application)
ae751fa8
BT		 1925{
1926 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1927 struct input_dev *input_dev = input_allocate_device();
c554bb04 1928 const char *suffix = NULL;
d7065620 1929 size_t suffix_len, name_len;
c554bb04
BT		 1930
1931 if (!hidinput || !input_dev)
1932 goto fail;
1933
1934 if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) &&
1935 hid->maxapplication > 1) {
1936 switch (application) {
1937 case HID_GD_KEYBOARD:
1938 suffix = "Keyboard";
1939 break;
1940 case HID_GD_KEYPAD:
1941 suffix = "Keypad";
1942 break;
1943 case HID_GD_MOUSE:
1944 suffix = "Mouse";
1945 break;
c0ee1d57
MW		 1946 case HID_DG_PEN:
1947 /*
1948 * yes, there is an issue here:
1949 * DG_PEN -> "Stylus"
1950 * DG_STYLUS -> "Pen"
1951 * But changing this now means users with config snippets
1952 * will have to change it and the test suite will not be happy.
1953 */
1954 suffix = "Stylus";
1955 break;
c554bb04
BT		 1956 case HID_DG_STYLUS:
1957 suffix = "Pen";
1958 break;
1959 case HID_DG_TOUCHSCREEN:
1960 suffix = "Touchscreen";
1961 break;
1962 case HID_DG_TOUCHPAD:
1963 suffix = "Touchpad";
1964 break;
1965 case HID_GD_SYSTEM_CONTROL:
1966 suffix = "System Control";
1967 break;
1968 case HID_CP_CONSUMER_CONTROL:
1969 suffix = "Consumer Control";
1970 break;
1971 case HID_GD_WIRELESS_RADIO_CTLS:
1972 suffix = "Wireless Radio Control";
1973 break;
ba6b055e
BT		 1974 case HID_GD_SYSTEM_MULTIAXIS:
1975 suffix = "System Multi Axis";
1976 break;
c554bb04
BT		 1977 default:
1978 break;
1979 }
1980 }
1981
1982 if (suffix) {
d7065620
BT		 1983 name_len = strlen(hid->name);
1984 suffix_len = strlen(suffix);
1985 if ((name_len < suffix_len) ||
1986 strcmp(hid->name + name_len - suffix_len, suffix)) {
1987 hidinput->name = kasprintf(GFP_KERNEL, "%s %s",
1988 hid->name, suffix);
1989 if (!hidinput->name)
1990 goto fail;
1991 }
ae751fa8
BT		 1992 }
1993
1994 input_set_drvdata(input_dev, hid);
3c86726c 1995 input_dev->event = hidinput_input_event;
ae751fa8
BT		 1996 input_dev->open = hidinput_open;
1997 input_dev->close = hidinput_close;
1998 input_dev->setkeycode = hidinput_setkeycode;
1999 input_dev->getkeycode = hidinput_getkeycode;
2000
c554bb04 2001 input_dev->name = hidinput->name ? hidinput->name : hid->name;
ae751fa8
BT		 2002 input_dev->phys = hid->phys;
2003 input_dev->uniq = hid->uniq;
2004 input_dev->id.bustype = hid->bus;
2005 input_dev->id.vendor = hid->vendor;
2006 input_dev->id.product = hid->product;
2007 input_dev->id.version = hid->version;
bbe31754 2008 input_dev->dev.parent = &hid->dev;
e1b63c01 2009
ae751fa8 2010 hidinput->input = input_dev;
0d6c3011 2011 hidinput->application = application;
ae751fa8
BT		 2012 list_add_tail(&hidinput->list, &hid->inputs);
2013
e1b63c01
BT		 2014 INIT_LIST_HEAD(&hidinput->reports);
2015
ae751fa8 2016 return hidinput;
c554bb04
BT		 2017
2018fail:
2019 kfree(hidinput);
2020 input_free_device(input_dev);
2021 hid_err(hid, "Out of memory during hid input probe\n");
2022 return NULL;
ae751fa8
BT		 2023}
2024
4f22decf
BT		 2025static bool hidinput_has_been_populated(struct hid_input *hidinput)
2026{
2027 int i;
2028 unsigned long r = 0;
2029
2030 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++)
2031 r |= hidinput->input->evbit[i];
2032
2033 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++)
2034 r |= hidinput->input->keybit[i];
2035
2036 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++)
2037 r |= hidinput->input->relbit[i];
2038
2039 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++)
2040 r |= hidinput->input->absbit[i];
2041
2042 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++)
2043 r |= hidinput->input->mscbit[i];
2044
2045 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++)
2046 r |= hidinput->input->ledbit[i];
2047
2048 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++)
2049 r |= hidinput->input->sndbit[i];
2050
2051 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++)
2052 r |= hidinput->input->ffbit[i];
2053
2054 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++)
2055 r |= hidinput->input->swbit[i];
2056
2057 return !!r;
2058}
2059
2060static void hidinput_cleanup_hidinput(struct hid_device *hid,
2061 struct hid_input *hidinput)
2062{
2063 struct hid_report *report;
2064 int i, k;
2065
2066 list_del(&hidinput->list);
2067 input_free_device(hidinput->input);
c554bb04 2068 kfree(hidinput->name);
4f22decf
BT		 2069
2070 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
2071 if (k == HID_OUTPUT_REPORT &&
2072 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
2073 continue;
2074
2075 list_for_each_entry(report, &hid->report_enum[k].report_list,
2076 list) {
2077
2078 for (i = 0; i < report->maxfield; i++)
2079 if (report->field[i]->hidinput == hidinput)
2080 report->field[i]->hidinput = NULL;
2081 }
2082 }
2083
2084 kfree(hidinput);
2085}
2086
72d19459
BT		 2087static struct hid_input *hidinput_match(struct hid_report *report)
2088{
2089 struct hid_device *hid = report->device;
2090 struct hid_input *hidinput;
2091
2092 list_for_each_entry(hidinput, &hid->inputs, list) {
2093 if (hidinput->report &&
2094 hidinput->report->id == report->id)
2095 return hidinput;
2096 }
2097
2098 return NULL;
2099}
2100
f07b3c1d
BT		 2101static struct hid_input *hidinput_match_application(struct hid_report *report)
2102{
2103 struct hid_device *hid = report->device;
2104 struct hid_input *hidinput;
2105
2106 list_for_each_entry(hidinput, &hid->inputs, list) {
0d6c3011 2107 if (hidinput->application == report->application)
f07b3c1d 2108 return hidinput;
7c7d7ac7
DT		 2109
2110 /*
2111 * Keep SystemControl and ConsumerControl applications together
2112 * with the main keyboard, if present.
2113 */
2114 if ((report->application == HID_GD_SYSTEM_CONTROL ||
2115 report->application == HID_CP_CONSUMER_CONTROL) &&
2116 hidinput->application == HID_GD_KEYBOARD) {
2117 return hidinput;
2118 }
f07b3c1d
BT		 2119 }
2120
2121 return NULL;
2122}
2123
72d19459
BT		 2124static inline void hidinput_configure_usages(struct hid_input *hidinput,
2125 struct hid_report *report)
2126{
5c20000a
BT		 2127 int i, j, k;
2128 int first_field_index = 0;
2129 int slot_collection_index = -1;
2130 int prev_collection_index = -1;
2131 unsigned int slot_idx = 0;
2132 struct hid_field *field;
2133
2134 /*
2135 * First tag all the fields that are part of a slot,
2136 * a slot needs to have one Contact ID in the collection
2137 */
2138 for (i = 0; i < report->maxfield; i++) {
2139 field = report->field[i];
2140
2141 /* ignore fields without usage */
2142 if (field->maxusage < 1)
2143 continue;
2144
2145 /*
2146 * janitoring when collection_index changes
2147 */
2148 if (prev_collection_index != field->usage->collection_index) {
2149 prev_collection_index = field->usage->collection_index;
2150 first_field_index = i;
2151 }
2152
2153 /*
2154 * if we already found a Contact ID in the collection,
2155 * tag and continue to the next.
2156 */
2157 if (slot_collection_index == field->usage->collection_index) {
2158 field->slot_idx = slot_idx;
2159 continue;
2160 }
2161
2162 /* check if the current field has Contact ID */
2163 for (j = 0; j < field->maxusage; j++) {
2164 if (field->usage[j].hid == HID_DG_CONTACTID) {
2165 slot_collection_index = field->usage->collection_index;
2166 slot_idx++;
2167
2168 /*
2169 * mark all previous fields and this one in the
2170 * current collection to be slotted.
2171 */
2172 for (k = first_field_index; k <= i; k++)
2173 report->field[k]->slot_idx = slot_idx;
2174 break;
2175 }
2176 }
2177 }
72d19459
BT		 2178
2179 for (i = 0; i < report->maxfield; i++)
2180 for (j = 0; j < report->field[i]->maxusage; j++)
2181 hidinput_configure_usage(hidinput, report->field[i],
048cddfd
BT		 2182 report->field[i]->usage + j,
2183 j);
72d19459
BT		 2184}
2185
dde5845a
JK		 2186/*
2187 * Register the input device; print a message.
2188 * Configure the input layer interface
2189 * Read all reports and initialize the absolute field values.
2190 */
2191
93c10132 2192int hidinput_connect(struct hid_device *hid, unsigned int force)
dde5845a 2193{
9ebf3d76 2194 struct hid_driver *drv = hid->driver;
dde5845a 2195 struct hid_report *report;
72d19459 2196 struct hid_input *next, *hidinput = NULL;
c554bb04 2197 unsigned int application;
72d19459 2198 int i, k;
dde5845a
JK		 2199
2200 INIT_LIST_HEAD(&hid->inputs);
50c9d75b 2201 INIT_WORK(&hid->led_work, hidinput_led_worker);
dde5845a 2202
190d7f02
BT		 2203 hid->status &= ~HID_STAT_DUP_DETECTED;
2204
93c10132
JS		 2205 if (!force) {
2206 for (i = 0; i < hid->maxcollection; i++) {
2207 struct hid_collection *col = &hid->collection[i];
2208 if (col->type == HID_COLLECTION_APPLICATION ||
2209 col->type == HID_COLLECTION_PHYSICAL)
2210 if (IS_INPUT_APPLICATION(col->usage))
2211 break;
2212 }
dde5845a 2213
93c10132
JS		 2214 if (i == hid->maxcollection)
2215 return -1;
2216 }
dde5845a 2217
f635bd11
HR		 2218 report_features(hid);
2219
2220 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
0d2689c0
BT		 2221 if (k == HID_OUTPUT_REPORT &&
2222 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
2223 continue;
5556feae 2224
dde5845a
JK		 2225 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
2226
2227 if (!report->maxfield)
2228 continue;
2229
c554bb04
BT		 2230 application = report->application;
2231
72d19459
BT		 2232 /*
2233 * Find the previous hidinput report attached
2234 * to this report id.
2235 */
2236 if (hid->quirks & HID_QUIRK_MULTI_INPUT)
2237 hidinput = hidinput_match(report);
f07b3c1d
BT		 2238 else if (hid->maxapplication > 1 &&
2239 (hid->quirks & HID_QUIRK_INPUT_PER_APP))
2240 hidinput = hidinput_match_application(report);
72d19459 2241
dde5845a 2242 if (!hidinput) {
c554bb04 2243 hidinput = hidinput_allocate(hid, application);
ae751fa8 2244 if (!hidinput)
368d290b 2245 goto out_unwind;
dde5845a
JK		 2246 }
2247
72d19459 2248 hidinput_configure_usages(hidinput, report);
4f22decf 2249
72d19459 2250 if (hid->quirks & HID_QUIRK_MULTI_INPUT)
dde5845a 2251 hidinput->report = report;
e1b63c01
BT		 2252
2253 list_add_tail(&report->hidinput_list,
2254 &hidinput->reports);
dde5845a 2255 }
0d2689c0 2256 }
dde5845a 2257
2dc702c9
PH		 2258 hidinput_change_resolution_multipliers(hid);
2259
72d19459 2260 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
39335d1c
BT		 2261 if (drv->input_configured &&
2262 drv->input_configured(hid, hidinput))
2263 goto out_unwind;
2264
2265 if (!hidinput_has_been_populated(hidinput)) {
72d19459
BT		 2266 /* no need to register an input device not populated */
2267 hidinput_cleanup_hidinput(hid, hidinput);
2268 continue;
2269 }
2270
72d19459
BT		 2271 if (input_register_device(hidinput->input))
2272 goto out_unwind;
2273 hidinput->registered = true;
4f22decf
BT		 2274 }
2275
2276 if (list_empty(&hid->inputs)) {
2277 hid_err(hid, "No inputs registered, leaving\n");
2278 goto out_unwind;
2279 }
2280
190d7f02
BT		 2281 if (hid->status & HID_STAT_DUP_DETECTED)
2282 hid_dbg(hid,
2283 "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n");
2284
dde5845a 2285 return 0;
368d290b 2286
368d290b
DH		 2287out_unwind:
2288 /* unwind the ones we already registered */
2289 hidinput_disconnect(hid);
2290
2291 return -1;
dde5845a 2292}
229695e5 2293EXPORT_SYMBOL_GPL(hidinput_connect);
dde5845a
JK		 2294
2295void hidinput_disconnect(struct hid_device *hid)
2296{
2297 struct hid_input *hidinput, *next;
2298
4f5ca836
JF		 2299 hidinput_cleanup_battery(hid);
2300
dde5845a
JK		 2301 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
2302 list_del(&hidinput->list);
72d19459
BT		 2303 if (hidinput->registered)
2304 input_unregister_device(hidinput->input);
2305 else
2306 input_free_device(hidinput->input);
e38c0ac5 2307 kfree(hidinput->name);
dde5845a
JK		 2308 kfree(hidinput);
2309 }
50c9d75b
DH		 2310
2311 /* led_work is spawned by input_dev callbacks, but doesn't access the
2312 * parent input_dev at all. Once all input devices are removed, we
2313 * know that led_work will never get restarted, so we can cancel it
2314 * synchronously and are safe. */
2315 cancel_work_sync(&hid->led_work);
dde5845a 2316}
229695e5 2317EXPORT_SYMBOL_GPL(hidinput_disconnect);
Linux 6.x block layer and io_uring tree(s)