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Merge tag 'for-v6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power...
[linux-2.6-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 */
bbc21cfd
JF		 343
344static const struct hid_device_id hid_battery_quirks[] = {
4cc85417 345 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
cbd366be
RS		 346 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO),
347 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
348 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
349 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI),
350 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
652aa6a9 351 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
cbd366be 352 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI),
652aa6a9 353 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
da940db4
KR		 354 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
355 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO),
356 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
0c47935c
DN		 357 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
358 USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI),
359 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
5d9374cf
AP		 360 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM,
361 USB_DEVICE_ID_ELECOM_BM084),
362 HID_BATTERY_QUIRK_IGNORE },
0fd79184
BL		 363 { HID_USB_DEVICE(USB_VENDOR_ID_SYMBOL,
364 USB_DEVICE_ID_SYMBOL_SCANNER_3),
365 HID_BATTERY_QUIRK_IGNORE },
a767ffea
NH		 366 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK,
367 USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD),
368 HID_BATTERY_QUIRK_IGNORE },
7940fb03
HG		 369 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH,
370 USB_DEVICE_ID_LOGITECH_DINOVO_EDGE_KBD),
371 HID_BATTERY_QUIRK_IGNORE },
7c38e769
SM		 372 { HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550_TOUCHSCREEN),
373 HID_BATTERY_QUIRK_IGNORE },
14902f89
HG		 374 { HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550VE_TOUCHSCREEN),
375 HID_BATTERY_QUIRK_IGNORE },
b74edf9b
TD		 376 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_15),
377 HID_BATTERY_QUIRK_IGNORE },
f3193ea1
KK		 378 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_15T_DR100),
379 HID_BATTERY_QUIRK_IGNORE },
decfe496
ED		 380 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_15),
381 HID_BATTERY_QUIRK_IGNORE },
b5539722
ZTV		 382 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_SURFACE_GO_TOUCHSCREEN),
383 HID_BATTERY_QUIRK_IGNORE },
db925d80
ML		 384 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_SURFACE_GO2_TOUCHSCREEN),
385 HID_BATTERY_QUIRK_IGNORE },
bbc21cfd
JF		 386 {}
387};
388
389static unsigned find_battery_quirk(struct hid_device *hdev)
390{
391 unsigned quirks = 0;
392 const struct hid_device_id *match;
393
394 match = hid_match_id(hdev, hid_battery_quirks);
395 if (match != NULL)
396 quirks = match->driver_data;
397
398 return quirks;
399}
400
581c4484
DT		 401static int hidinput_scale_battery_capacity(struct hid_device *dev,
402 int value)
403{
404 if (dev->battery_min < dev->battery_max &&
405 value >= dev->battery_min && value <= dev->battery_max)
406 value = ((value - dev->battery_min) * 100) /
407 (dev->battery_max - dev->battery_min);
408
409 return value;
410}
411
412static int hidinput_query_battery_capacity(struct hid_device *dev)
413{
414 u8 *buf;
415 int ret;
416
4f57cace 417 buf = kmalloc(4, GFP_KERNEL);
581c4484
DT		 418 if (!buf)
419 return -ENOMEM;
420
4f57cace 421 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 4,
581c4484 422 dev->battery_report_type, HID_REQ_GET_REPORT);
4f57cace 423 if (ret < 2) {
581c4484
DT		 424 kfree(buf);
425 return -ENODATA;
426 }
427
428 ret = hidinput_scale_battery_capacity(dev, buf[1]);
429 kfree(buf);
430 return ret;
431}
432
4f5ca836
JF		 433static int hidinput_get_battery_property(struct power_supply *psy,
434 enum power_supply_property prop,
435 union power_supply_propval *val)
436{
297d716f 437 struct hid_device *dev = power_supply_get_drvdata(psy);
581c4484 438 int value;
4f5ca836
JF		 439 int ret = 0;
440
441 switch (prop) {
442 case POWER_SUPPLY_PROP_PRESENT:
443 case POWER_SUPPLY_PROP_ONLINE:
444 val->intval = 1;
445 break;
446
447 case POWER_SUPPLY_PROP_CAPACITY:
2e210bbb
DT		 448 if (dev->battery_status != HID_BATTERY_REPORTED &&
449 !dev->battery_avoid_query) {
581c4484
DT		 450 value = hidinput_query_battery_capacity(dev);
451 if (value < 0)
452 return value;
453 } else {
454 value = dev->battery_capacity;
c5a92aa3
DN		 455 }
456
581c4484 457 val->intval = value;
4f5ca836
JF		 458 break;
459
460 case POWER_SUPPLY_PROP_MODEL_NAME:
461 val->strval = dev->name;
462 break;
463
c5a92aa3 464 case POWER_SUPPLY_PROP_STATUS:
2e210bbb
DT		 465 if (dev->battery_status != HID_BATTERY_REPORTED &&
466 !dev->battery_avoid_query) {
581c4484
DT		 467 value = hidinput_query_battery_capacity(dev);
468 if (value < 0)
469 return value;
470
471 dev->battery_capacity = value;
2e210bbb 472 dev->battery_status = HID_BATTERY_QUERIED;
581c4484
DT		 473 }
474
2e210bbb 475 if (dev->battery_status == HID_BATTERY_UNKNOWN)
581c4484 476 val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
581c4484
DT		 477 else
478 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
c5a92aa3
DN		 479 break;
480
45d9c273
JF		 481 case POWER_SUPPLY_PROP_SCOPE:
482 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
483 break;
484
4f5ca836
JF		 485 default:
486 ret = -EINVAL;
487 break;
488 }
489
490 return ret;
491}
492
9de07a4e
JC		 493static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
494 struct hid_field *field, bool is_percentage)
4f5ca836 495{
581c4484 496 struct power_supply_desc *psy_desc;
297d716f 497 struct power_supply_config psy_cfg = { .drv_data = dev, };
bbc21cfd 498 unsigned quirks;
2f2e3f6d 499 s32 min, max;
581c4484 500 int error;
2f2e3f6d 501
581c4484
DT		 502 if (dev->battery)
503 return 0; /* already initialized? */
4f5ca836 504
5d9374cf
AP		 505 quirks = find_battery_quirk(dev);
506
507 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
508 dev->bus, dev->vendor, dev->product, dev->version, quirks);
509
510 if (quirks & HID_BATTERY_QUIRK_IGNORE)
581c4484 511 return 0;
5d9374cf 512
297d716f 513 psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL);
581c4484
DT		 514 if (!psy_desc)
515 return -ENOMEM;
4f5ca836 516
09223865
DT		 517 psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery",
518 strlen(dev->uniq) ?
519 dev->uniq : dev_name(&dev->dev));
581c4484
DT		 520 if (!psy_desc->name) {
521 error = -ENOMEM;
522 goto err_free_mem;
297d716f
KK		 523 }
524
525 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY;
526 psy_desc->properties = hidinput_battery_props;
527 psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props);
528 psy_desc->use_for_apm = 0;
529 psy_desc->get_property = hidinput_get_battery_property;
4f5ca836 530
2f2e3f6d
JF		 531 min = field->logical_minimum;
532 max = field->logical_maximum;
533
9de07a4e 534 if (is_percentage || (quirks & HID_BATTERY_QUIRK_PERCENT)) {
bbc21cfd
JF		 535 min = 0;
536 max = 100;
537 }
538
652aa6a9
JF		 539 if (quirks & HID_BATTERY_QUIRK_FEATURE)
540 report_type = HID_FEATURE_REPORT;
541
4f5ca836
JF		 542 dev->battery_min = min;
543 dev->battery_max = max;
fb8ac91b 544 dev->battery_report_type = report_type;
2f2e3f6d 545 dev->battery_report_id = field->report->id;
4f5ca836 546
2e210bbb
DT		 547 /*
548 * Stylus is normally not connected to the device and thus we
549 * can't query the device and get meaningful battery strength.
550 * We have to wait for the device to report it on its own.
551 */
552 dev->battery_avoid_query = report_type == HID_INPUT_REPORT &&
553 field->physical == HID_DG_STYLUS;
554
297d716f
KK		 555 dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg);
556 if (IS_ERR(dev->battery)) {
581c4484
DT		 557 error = PTR_ERR(dev->battery);
558 hid_warn(dev, "can't register power supply: %d\n", error);
559 goto err_free_name;
4f5ca836 560 }
2f2e3f6d 561
581c4484
DT		 562 power_supply_powers(dev->battery, &dev->dev);
563 return 0;
564
565err_free_name:
566 kfree(psy_desc->name);
567err_free_mem:
568 kfree(psy_desc);
569 dev->battery = NULL;
570 return error;
4f5ca836
JF		 571}
572
573static void hidinput_cleanup_battery(struct hid_device *dev)
574{
0621809e
KK		 575 const struct power_supply_desc *psy_desc;
576
297d716f 577 if (!dev->battery)
4f5ca836
JF		 578 return;
579
0621809e 580 psy_desc = dev->battery->desc;
297d716f 581 power_supply_unregister(dev->battery);
0621809e
KK		 582 kfree(psy_desc->name);
583 kfree(psy_desc);
297d716f 584 dev->battery = NULL;
4f5ca836 585}
581c4484
DT		 586
587static void hidinput_update_battery(struct hid_device *dev, int value)
588{
0152b29c
DT		 589 int capacity;
590
581c4484
DT		 591 if (!dev->battery)
592 return;
593
594 if (value == 0 || value < dev->battery_min || value > dev->battery_max)
595 return;
596
0152b29c
DT		 597 capacity = hidinput_scale_battery_capacity(dev, value);
598
2e210bbb 599 if (dev->battery_status != HID_BATTERY_REPORTED ||
c6838eee 600 capacity != dev->battery_capacity ||
601 ktime_after(ktime_get_coarse(), dev->battery_ratelimit_time)) {
0152b29c 602 dev->battery_capacity = capacity;
2e210bbb 603 dev->battery_status = HID_BATTERY_REPORTED;
c6838eee 604 dev->battery_ratelimit_time =
605 ktime_add_ms(ktime_get_coarse(), 30 * 1000);
0152b29c
DT		 606 power_supply_changed(dev->battery);
607 }
581c4484 608}
4f5ca836 609#else /* !CONFIG_HID_BATTERY_STRENGTH */
581c4484 610static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
9de07a4e 611 struct hid_field *field, bool is_percentage)
4f5ca836 612{
581c4484 613 return 0;
4f5ca836
JF		 614}
615
616static void hidinput_cleanup_battery(struct hid_device *dev)
617{
618}
581c4484
DT		 619
620static void hidinput_update_battery(struct hid_device *dev, int value)
621{
622}
4f5ca836
JF		 623#endif /* CONFIG_HID_BATTERY_STRENGTH */
624
bcfa8d14
TW		 625static bool hidinput_field_in_collection(struct hid_device *device, struct hid_field *field,
626 unsigned int type, unsigned int usage)
627{
628 struct hid_collection *collection;
629
630 collection = &device->collection[field->usage->collection_index];
631
632 return collection->type == type && collection->usage == usage;
633}
634
dde5845a 635static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
048cddfd 636 struct hid_usage *usage, unsigned int usage_index)
dde5845a
JK		 637{
638 struct input_dev *input = hidinput->input;
e0712985 639 struct hid_device *device = input_get_drvdata(input);
5c20000a 640 const struct usage_priority *usage_priority = NULL;
3715ade9 641 int max = 0, code;
048cddfd 642 unsigned int i = 0;
dde5845a
JK		 643 unsigned long *bit = NULL;
644
645 field->hidinput = hidinput;
646
dde5845a
JK		 647 if (field->flags & HID_MAIN_ITEM_CONSTANT)
648 goto ignore;
649
cc6b54aa
BT		 650 /* Ignore if report count is out of bounds. */
651 if (field->report_count < 1)
652 goto ignore;
653
82eb1219
JK		 654 /* only LED usages are supported in output fields */
655 if (field->report_type == HID_OUTPUT_REPORT &&
656 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
82eb1219
JK		 657 goto ignore;
658 }
659
048cddfd
BT		 660 /* assign a priority based on the static list declared here */
661 for (i = 0; i < ARRAY_SIZE(hidinput_usages_priorities); i++) {
5c20000a
BT		 662 if (usage->hid == hidinput_usages_priorities[i].usage) {
663 usage_priority = &hidinput_usages_priorities[i];
664
048cddfd
BT		 665 field->usages_priorities[usage_index] =
666 (ARRAY_SIZE(hidinput_usages_priorities) - i) << 8;
667 break;
668 }
669 }
670
5c20000a
BT		 671 /*
672 * For slotted devices, we need to also add the slot index
673 * in the priority.
674 */
675 if (usage_priority && usage_priority->global)
676 field->usages_priorities[usage_index] |=
677 usage_priority->slot_overwrite;
678 else
679 field->usages_priorities[usage_index] |=
680 (0xff - field->slot_idx) << 16;
681
c500c971
JS		 682 if (device->driver->input_mapping) {
683 int ret = device->driver->input_mapping(device, hidinput, field,
684 usage, &bit, &max);
685 if (ret > 0)
686 goto mapped;
687 if (ret < 0)
688 goto ignore;
689 }
690
dde5845a 691 switch (usage->hid & HID_USAGE_PAGE) {
880d29f1
JS		 692 case HID_UP_UNDEFINED:
693 goto ignore;
dde5845a 694
880d29f1
JS		 695 case HID_UP_KEYBOARD:
696 set_bit(EV_REP, input->evbit);
dde5845a 697
880d29f1
JS		 698 if ((usage->hid & HID_USAGE) < 256) {
699 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
700 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
701 } else
702 map_key(KEY_UNKNOWN);
dde5845a 703
880d29f1 704 break;
dde5845a 705
880d29f1 706 case HID_UP_BUTTON:
7f978b9b 707 code = ((usage->hid - 1) & HID_USAGE);
dde5845a 708
880d29f1
JS		 709 switch (field->application) {
710 case HID_GD_MOUSE:
1874542d 711 case HID_GD_POINTER: code += BTN_MOUSE; break;
cf2f765f 712 case HID_GD_JOYSTICK:
fc99f22c
DM		 713 if (code <= 0xf)
714 code += BTN_JOYSTICK;
715 else
f8e86d05
IR		 716 code += BTN_TRIGGER_HAPPY - 0x10;
717 break;
718 case HID_GD_GAMEPAD:
719 if (code <= 0xf)
720 code += BTN_GAMEPAD;
721 else
722 code += BTN_TRIGGER_HAPPY - 0x10;
fc99f22c 723 break;
bcfa8d14
TW		 724 case HID_CP_CONSUMER_CONTROL:
725 if (hidinput_field_in_collection(device, field,
726 HID_COLLECTION_NAMED_ARRAY,
727 HID_CP_PROGRAMMABLEBUTTONS)) {
728 if (code <= 0x1d)
729 code += KEY_MACRO1;
730 else
731 code += BTN_TRIGGER_HAPPY - 0x1e;
7fc48fd6 732 break;
bcfa8d14 733 }
7fc48fd6 734 fallthrough;
880d29f1
JS		 735 default:
736 switch (field->physical) {
737 case HID_GD_MOUSE:
1874542d
FF		 738 case HID_GD_POINTER: code += BTN_MOUSE; break;
739 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
740 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break;
741 default: code += BTN_MISC;
dde5845a 742 }
880d29f1 743 }
dde5845a 744
880d29f1
JS		 745 map_key(code);
746 break;
747
748 case HID_UP_SIMULATION:
749 switch (usage->hid & 0xffff) {
750 case 0xba: map_abs(ABS_RUDDER); break;
751 case 0xbb: map_abs(ABS_THROTTLE); break;
752 case 0xc4: map_abs(ABS_GAS); break;
753 case 0xc5: map_abs(ABS_BRAKE); break;
754 case 0xc8: map_abs(ABS_WHEEL); break;
755 default: goto ignore;
756 }
757 break;
758
759 case HID_UP_GENDESK:
760 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
761 switch (usage->hid & 0xf) {
762 case 0x1: map_key_clear(KEY_POWER); break;
763 case 0x2: map_key_clear(KEY_SLEEP); break;
764 case 0x3: map_key_clear(KEY_WAKEUP); break;
437f3b19
JW		 765 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
766 case 0x5: map_key_clear(KEY_MENU); break;
767 case 0x6: map_key_clear(KEY_PROG1); break;
768 case 0x7: map_key_clear(KEY_HELP); break;
769 case 0x8: map_key_clear(KEY_EXIT); break;
770 case 0x9: map_key_clear(KEY_SELECT); break;
771 case 0xa: map_key_clear(KEY_RIGHT); break;
772 case 0xb: map_key_clear(KEY_LEFT); break;
773 case 0xc: map_key_clear(KEY_UP); break;
774 case 0xd: map_key_clear(KEY_DOWN); break;
775 case 0xe: map_key_clear(KEY_POWER2); break;
776 case 0xf: map_key_clear(KEY_RESTART); break;
880d29f1 777 default: goto unknown;
dde5845a
JK		 778 }
779 break;
880d29f1 780 }
dde5845a 781
c01908a1
DT		 782 if ((usage->hid & 0xf0) == 0xb0) { /* SC - Display */
783 switch (usage->hid & 0xf) {
784 case 0x05: map_key_clear(KEY_SWITCHVIDEOMODE); break;
785 default: goto ignore;
786 }
787 break;
788 }
789
1989dada
BT		 790 /*
791 * Some lazy vendors declare 255 usages for System Control,
792 * leading to the creation of ABS_X|Y axis and too many others.
793 * It wouldn't be a problem if joydev doesn't consider the
794 * device as a joystick then.
795 */
796 if (field->application == HID_GD_SYSTEM_CONTROL)
797 goto ignore;
798
880d29f1 799 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */
dde5845a 800 switch (usage->hid) {
880d29f1
JS		 801 case HID_GD_UP: usage->hat_dir = 1; break;
802 case HID_GD_DOWN: usage->hat_dir = 5; break;
803 case HID_GD_RIGHT: usage->hat_dir = 3; break;
804 case HID_GD_LEFT: usage->hat_dir = 7; break;
805 default: goto unknown;
dde5845a 806 }
880d29f1
JS		 807 if (field->dpad) {
808 map_abs(field->dpad);
809 goto ignore;
d4ae650a 810 }
880d29f1 811 map_abs(ABS_HAT0X);
dde5845a 812 break;
880d29f1 813 }
dde5845a 814
880d29f1
JS		 815 switch (usage->hid) {
816 /* These usage IDs map directly to the usage codes. */
817 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
818 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
79346d62
BT		 819 if (field->flags & HID_MAIN_ITEM_RELATIVE)
820 map_rel(usage->hid & 0xf);
821 else
822 map_abs_clear(usage->hid & 0xf);
823 break;
824
2dc702c9
PH		 825 case HID_GD_WHEEL:
826 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
827 set_bit(REL_WHEEL, input->relbit);
828 map_rel(REL_WHEEL_HI_RES);
829 } else {
830 map_abs(usage->hid & 0xf);
831 }
832 break;
833 case HID_GD_SLIDER: case HID_GD_DIAL:
880d29f1
JS		 834 if (field->flags & HID_MAIN_ITEM_RELATIVE)
835 map_rel(usage->hid & 0xf);
836 else
837 map_abs(usage->hid & 0xf);
838 break;
dde5845a 839
880d29f1
JS		 840 case HID_GD_HATSWITCH:
841 usage->hat_min = field->logical_minimum;
842 usage->hat_max = field->logical_maximum;
843 map_abs(ABS_HAT0X);
844 break;
dde5845a 845
880d29f1
JS		 846 case HID_GD_START: map_key_clear(BTN_START); break;
847 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
dde5845a 848
61df56be
HG		 849 case HID_GD_RFKILL_BTN:
850 /* MS wireless radio ctl extension, also check CA */
6e7edabf 851 if (field->application == HID_GD_WIRELESS_RADIO_CTLS) {
61df56be
HG		 852 map_key_clear(KEY_RFKILL);
853 /* We need to simulate the btn release */
854 field->flags |= HID_MAIN_ITEM_RELATIVE;
855 break;
856 }
6b554275 857 goto unknown;
61df56be 858
880d29f1
JS		 859 default: goto unknown;
860 }
dde5845a 861
880d29f1
JS		 862 break;
863
864 case HID_UP_LED:
865 switch (usage->hid & 0xffff) { /* HID-Value: */
866 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */
867 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */
868 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */
869 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */
870 case 0x05: map_led (LED_KANA); break; /* "Kana" */
871 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */
872 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */
873 case 0x09: map_led (LED_MUTE); break; /* "Mute" */
874 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */
875 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */
876 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */
877
878 default: goto ignore;
879 }
880 break;
881
882 case HID_UP_DIGITIZER:
8473a93d
TT		 883 if ((field->application & 0xff) == 0x01) /* Digitizer */
884 __set_bit(INPUT_PROP_POINTER, input->propbit);
885 else if ((field->application & 0xff) == 0x02) /* Pen */
886 __set_bit(INPUT_PROP_DIRECT, input->propbit);
887
880d29f1 888 switch (usage->hid & 0xff) {
8c8b01c3
FB		 889 case 0x00: /* Undefined */
890 goto ignore;
891
880d29f1
JS		 892 case 0x30: /* TipPressure */
893 if (!test_bit(BTN_TOUCH, input->keybit)) {
894 device->quirks |= HID_QUIRK_NOTOUCH;
895 set_bit(EV_KEY, input->evbit);
896 set_bit(BTN_TOUCH, input->keybit);
dde5845a 897 }
880d29f1 898 map_abs_clear(ABS_PRESSURE);
dde5845a
JK		 899 break;
900
880d29f1 901 case 0x32: /* InRange */
3c2b0dbd
BT		 902 switch (field->physical) {
903 case HID_DG_PUCK:
904 map_key(BTN_TOOL_MOUSE);
905 break;
906 case HID_DG_FINGER:
907 map_key(BTN_TOOL_FINGER);
908 break;
909 default:
910 /*
911 * If the physical is not given,
912 * rely on the application.
913 */
914 if (!field->physical) {
915 switch (field->application) {
916 case HID_DG_TOUCHSCREEN:
917 case HID_DG_TOUCHPAD:
918 map_key_clear(BTN_TOOL_FINGER);
919 break;
920 default:
921 map_key_clear(BTN_TOOL_PEN);
922 }
923 } else {
924 map_key(BTN_TOOL_PEN);
925 }
926 break;
dde5845a
JK		 927 }
928 break;
929
581c4484 930 case 0x3b: /* Battery Strength */
9de07a4e 931 hidinput_setup_battery(device, HID_INPUT_REPORT, field, false);
581c4484 932 usage->type = EV_PWR;
505f394f 933 return;
581c4484 934
880d29f1
JS		 935 case 0x3c: /* Invert */
936 map_key_clear(BTN_TOOL_RUBBER);
dde5845a
JK		 937 break;
938
b73b2da0
NK		 939 case 0x3d: /* X Tilt */
940 map_abs_clear(ABS_TILT_X);
941 break;
942
943 case 0x3e: /* Y Tilt */
944 map_abs_clear(ABS_TILT_Y);
945 break;
946
880d29f1
JS		 947 case 0x33: /* Touch */
948 case 0x42: /* TipSwitch */
949 case 0x43: /* TipSwitch2 */
950 device->quirks &= ~HID_QUIRK_NOTOUCH;
951 map_key_clear(BTN_TOUCH);
952 break;
dde5845a 953
880d29f1
JS		 954 case 0x44: /* BarrelSwitch */
955 map_key_clear(BTN_STYLUS);
956 break;
dde5845a 957
654c192a
PC		 958 case 0x45: /* ERASER */
959 /*
960 * This event is reported when eraser tip touches the surface.
961 * Actual eraser (BTN_TOOL_RUBBER) is set by Invert usage when
962 * tool gets in proximity.
963 */
964 map_key_clear(BTN_TOUCH);
965 break;
966
50b63697 967 case 0x46: /* TabletPick */
368c9664 968 case 0x5a: /* SecondaryBarrelSwitch */
50b63697
NK		 969 map_key_clear(BTN_STYLUS2);
970 break;
971
368c9664 972 case 0x5b: /* TransducerSerialNumber */
f3e82521 973 case 0x6e: /* TransducerSerialNumber2 */
8aa45b54 974 map_msc(MSC_SERIAL);
368c9664
PC		 975 break;
976
880d29f1
JS		 977 default: goto unknown;
978 }
979 break;
980
f3dddf24
DT		 981 case HID_UP_TELEPHONY:
982 switch (usage->hid & HID_USAGE) {
983 case 0x2f: map_key_clear(KEY_MICMUTE); break;
984 case 0xb0: map_key_clear(KEY_NUMERIC_0); break;
985 case 0xb1: map_key_clear(KEY_NUMERIC_1); break;
986 case 0xb2: map_key_clear(KEY_NUMERIC_2); break;
987 case 0xb3: map_key_clear(KEY_NUMERIC_3); break;
988 case 0xb4: map_key_clear(KEY_NUMERIC_4); break;
989 case 0xb5: map_key_clear(KEY_NUMERIC_5); break;
990 case 0xb6: map_key_clear(KEY_NUMERIC_6); break;
991 case 0xb7: map_key_clear(KEY_NUMERIC_7); break;
992 case 0xb8: map_key_clear(KEY_NUMERIC_8); break;
993 case 0xb9: map_key_clear(KEY_NUMERIC_9); break;
994 case 0xba: map_key_clear(KEY_NUMERIC_STAR); break;
995 case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break;
996 case 0xbc: map_key_clear(KEY_NUMERIC_A); break;
997 case 0xbd: map_key_clear(KEY_NUMERIC_B); break;
998 case 0xbe: map_key_clear(KEY_NUMERIC_C); break;
999 case 0xbf: map_key_clear(KEY_NUMERIC_D); break;
1000 default: goto ignore;
1001 }
1002 break;
1003
437f3b19 1004 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */
880d29f1
JS		 1005 switch (usage->hid & HID_USAGE) {
1006 case 0x000: goto ignore;
437f3b19
JW		 1007 case 0x030: map_key_clear(KEY_POWER); break;
1008 case 0x031: map_key_clear(KEY_RESTART); break;
1009 case 0x032: map_key_clear(KEY_SLEEP); break;
880d29f1 1010 case 0x034: map_key_clear(KEY_SLEEP); break;
437f3b19 1011 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break;
880d29f1
JS		 1012 case 0x036: map_key_clear(BTN_MISC); break;
1013
437f3b19
JW		 1014 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */
1015 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */
1016 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */
1017 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */
1018 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */
1019 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */
1020 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */
1021 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */
1022 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */
1023
1024 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */
1025 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */
1026 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */
1027 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */
1028 case 0x069: map_key_clear(KEY_RED); break;
1029 case 0x06a: map_key_clear(KEY_GREEN); break;
1030 case 0x06b: map_key_clear(KEY_BLUE); break;
1031 case 0x06c: map_key_clear(KEY_YELLOW); break;
f7b3d85a 1032 case 0x06d: map_key_clear(KEY_ASPECT_RATIO); break;
437f3b19 1033
f362e690
OG		 1034 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break;
1035 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break;
1036 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break;
1037 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break;
1038 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break;
1039 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break;
1040
7975a1d6
DT		 1041 case 0x079: map_key_clear(KEY_KBDILLUMUP); break;
1042 case 0x07a: map_key_clear(KEY_KBDILLUMDOWN); break;
1043 case 0x07c: map_key_clear(KEY_KBDILLUMTOGGLE); break;
1044
437f3b19 1045 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break;
880d29f1 1046 case 0x083: map_key_clear(KEY_LAST); break;
437f3b19 1047 case 0x084: map_key_clear(KEY_ENTER); break;
880d29f1
JS		 1048 case 0x088: map_key_clear(KEY_PC); break;
1049 case 0x089: map_key_clear(KEY_TV); break;
1050 case 0x08a: map_key_clear(KEY_WWW); break;
1051 case 0x08b: map_key_clear(KEY_DVD); break;
1052 case 0x08c: map_key_clear(KEY_PHONE); break;
1053 case 0x08d: map_key_clear(KEY_PROGRAM); break;
1054 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break;
1055 case 0x08f: map_key_clear(KEY_GAMES); break;
1056 case 0x090: map_key_clear(KEY_MEMO); break;
1057 case 0x091: map_key_clear(KEY_CD); break;
1058 case 0x092: map_key_clear(KEY_VCR); break;
1059 case 0x093: map_key_clear(KEY_TUNER); break;
1060 case 0x094: map_key_clear(KEY_EXIT); break;
1061 case 0x095: map_key_clear(KEY_HELP); break;
1062 case 0x096: map_key_clear(KEY_TAPE); break;
1063 case 0x097: map_key_clear(KEY_TV2); break;
1064 case 0x098: map_key_clear(KEY_SAT); break;
1065 case 0x09a: map_key_clear(KEY_PVR); break;
1066
1067 case 0x09c: map_key_clear(KEY_CHANNELUP); break;
1068 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
1069 case 0x0a0: map_key_clear(KEY_VCR2); break;
1070
1071 case 0x0b0: map_key_clear(KEY_PLAY); break;
1072 case 0x0b1: map_key_clear(KEY_PAUSE); break;
1073 case 0x0b2: map_key_clear(KEY_RECORD); break;
1074 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
1075 case 0x0b4: map_key_clear(KEY_REWIND); break;
1076 case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
1077 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
1078 case 0x0b7: map_key_clear(KEY_STOPCD); break;
1079 case 0x0b8: map_key_clear(KEY_EJECTCD); break;
1080 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break;
437f3b19
JW		 1081 case 0x0b9: map_key_clear(KEY_SHUFFLE); break;
1082 case 0x0bf: map_key_clear(KEY_SLOW); break;
880d29f1
JS		 1083
1084 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
f362e690 1085 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break;
7b229b13 1086
bfa26ba3 1087 case 0x0d8: map_key_clear(KEY_DICTATE); break;
7b229b13
DT		 1088 case 0x0d9: map_key_clear(KEY_EMOJI_PICKER); break;
1089
880d29f1
JS		 1090 case 0x0e0: map_abs_clear(ABS_VOLUME); break;
1091 case 0x0e2: map_key_clear(KEY_MUTE); break;
1092 case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
1093 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
1094 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
437f3b19 1095 case 0x0f5: map_key_clear(KEY_SLOW); break;
880d29f1 1096
f362e690 1097 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break;
880d29f1
JS		 1098 case 0x182: map_key_clear(KEY_BOOKMARKS); break;
1099 case 0x183: map_key_clear(KEY_CONFIG); break;
1100 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break;
1101 case 0x185: map_key_clear(KEY_EDITOR); break;
1102 case 0x186: map_key_clear(KEY_SPREADSHEET); break;
1103 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break;
1104 case 0x188: map_key_clear(KEY_PRESENTATION); break;
1105 case 0x189: map_key_clear(KEY_DATABASE); break;
1106 case 0x18a: map_key_clear(KEY_MAIL); break;
1107 case 0x18b: map_key_clear(KEY_NEWS); break;
1108 case 0x18c: map_key_clear(KEY_VOICEMAIL); break;
1109 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break;
1110 case 0x18e: map_key_clear(KEY_CALENDAR); break;
f362e690
OG		 1111 case 0x18f: map_key_clear(KEY_TASKMANAGER); break;
1112 case 0x190: map_key_clear(KEY_JOURNAL); break;
880d29f1
JS		 1113 case 0x191: map_key_clear(KEY_FINANCE); break;
1114 case 0x192: map_key_clear(KEY_CALC); break;
437f3b19 1115 case 0x193: map_key_clear(KEY_PLAYER); break;
880d29f1
JS		 1116 case 0x194: map_key_clear(KEY_FILE); break;
1117 case 0x196: map_key_clear(KEY_WWW); break;
0690535d 1118 case 0x199: map_key_clear(KEY_CHAT); break;
880d29f1
JS		 1119 case 0x19c: map_key_clear(KEY_LOGOFF); break;
1120 case 0x19e: map_key_clear(KEY_COFFEE); break;
f362e690
OG		 1121 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break;
1122 case 0x1a2: map_key_clear(KEY_APPSELECT); break;
5820e4d4
HG		 1123 case 0x1a3: map_key_clear(KEY_NEXT); break;
1124 case 0x1a4: map_key_clear(KEY_PREVIOUS); break;
880d29f1
JS		 1125 case 0x1a6: map_key_clear(KEY_HELP); break;
1126 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
1127 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break;
437f3b19 1128 case 0x1ae: map_key_clear(KEY_KEYBOARD); break;
f362e690 1129 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break;
5820e4d4 1130 case 0x1b4: map_key_clear(KEY_FILE); break;
437f3b19
JW		 1131 case 0x1b6: map_key_clear(KEY_IMAGES); break;
1132 case 0x1b7: map_key_clear(KEY_AUDIO); break;
1133 case 0x1b8: map_key_clear(KEY_VIDEO); break;
880d29f1
JS		 1134 case 0x1bc: map_key_clear(KEY_MESSENGER); break;
1135 case 0x1bd: map_key_clear(KEY_INFO); break;
ce856634 1136 case 0x1cb: map_key_clear(KEY_ASSISTANT); break;
880d29f1
JS		 1137 case 0x201: map_key_clear(KEY_NEW); break;
1138 case 0x202: map_key_clear(KEY_OPEN); break;
1139 case 0x203: map_key_clear(KEY_CLOSE); break;
1140 case 0x204: map_key_clear(KEY_EXIT); break;
1141 case 0x207: map_key_clear(KEY_SAVE); break;
1142 case 0x208: map_key_clear(KEY_PRINT); break;
1143 case 0x209: map_key_clear(KEY_PROPS); break;
1144 case 0x21a: map_key_clear(KEY_UNDO); break;
1145 case 0x21b: map_key_clear(KEY_COPY); break;
1146 case 0x21c: map_key_clear(KEY_CUT); break;
1147 case 0x21d: map_key_clear(KEY_PASTE); break;
1148 case 0x21f: map_key_clear(KEY_FIND); break;
1149 case 0x221: map_key_clear(KEY_SEARCH); break;
1150 case 0x222: map_key_clear(KEY_GOTO); break;
1151 case 0x223: map_key_clear(KEY_HOMEPAGE); break;
1152 case 0x224: map_key_clear(KEY_BACK); break;
1153 case 0x225: map_key_clear(KEY_FORWARD); break;
1154 case 0x226: map_key_clear(KEY_STOP); break;
1155 case 0x227: map_key_clear(KEY_REFRESH); break;
1156 case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
1157 case 0x22d: map_key_clear(KEY_ZOOMIN); break;
1158 case 0x22e: map_key_clear(KEY_ZOOMOUT); break;
1159 case 0x22f: map_key_clear(KEY_ZOOMRESET); break;
afbbaa1b 1160 case 0x232: map_key_clear(KEY_FULL_SCREEN); break;
880d29f1
JS		 1161 case 0x233: map_key_clear(KEY_SCROLLUP); break;
1162 case 0x234: map_key_clear(KEY_SCROLLDOWN); break;
2dc702c9
PH		 1163 case 0x238: /* AC Pan */
1164 set_bit(REL_HWHEEL, input->relbit);
1165 map_rel(REL_HWHEEL_HI_RES);
1166 break;
437f3b19 1167 case 0x23d: map_key_clear(KEY_EDIT); break;
880d29f1 1168 case 0x25f: map_key_clear(KEY_CANCEL); break;
437f3b19
JW		 1169 case 0x269: map_key_clear(KEY_INSERT); break;
1170 case 0x26a: map_key_clear(KEY_DELETE); break;
880d29f1
JS		 1171 case 0x279: map_key_clear(KEY_REDO); break;
1172
1173 case 0x289: map_key_clear(KEY_REPLY); break;
1174 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
1175 case 0x28c: map_key_clear(KEY_SEND); break;
1176
bd21d847
DT		 1177 case 0x29d: map_key_clear(KEY_KBD_LAYOUT_NEXT); break;
1178
327b89f0
WM		 1179 case 0x2a2: map_key_clear(KEY_ALL_APPLICATIONS); break;
1180
f974008f
OG		 1181 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break;
1182 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break;
1183 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break;
1184 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break;
1185 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break;
1186 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break;
1187
96dd8687
DT		 1188 case 0x29f: map_key_clear(KEY_SCALE); break;
1189
afdb5cce 1190 default: map_key_clear(KEY_UNKNOWN);
880d29f1
JS		 1191 }
1192 break;
1193
4f5ca836 1194 case HID_UP_GENDEVCTRLS:
581c4484
DT		 1195 switch (usage->hid) {
1196 case HID_DC_BATTERYSTRENGTH:
9de07a4e
JC		 1197 hidinput_setup_battery(device, HID_INPUT_REPORT, field, false);
1198 usage->type = EV_PWR;
1199 return;
1200 }
1201 goto unknown;
1202
1203 case HID_UP_BATTERY:
1204 switch (usage->hid) {
1205 case HID_BAT_ABSOLUTESTATEOFCHARGE:
1206 hidinput_setup_battery(device, HID_INPUT_REPORT, field, true);
581c4484 1207 usage->type = EV_PWR;
505f394f 1208 return;
581c4484
DT		 1209 }
1210 goto unknown;
4f5ca836 1211
880d29f1
JS		 1212 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
1213 set_bit(EV_REP, input->evbit);
1214 switch (usage->hid & HID_USAGE) {
1215 case 0x021: map_key_clear(KEY_PRINT); break;
1216 case 0x070: map_key_clear(KEY_HP); break;
1217 case 0x071: map_key_clear(KEY_CAMERA); break;
1218 case 0x072: map_key_clear(KEY_SOUND); break;
1219 case 0x073: map_key_clear(KEY_QUESTION); break;
1220 case 0x080: map_key_clear(KEY_EMAIL); break;
1221 case 0x081: map_key_clear(KEY_CHAT); break;
1222 case 0x082: map_key_clear(KEY_SEARCH); break;
1223 case 0x083: map_key_clear(KEY_CONNECT); break;
1224 case 0x084: map_key_clear(KEY_FINANCE); break;
1225 case 0x085: map_key_clear(KEY_SPORT); break;
1226 case 0x086: map_key_clear(KEY_SHOP); break;
929578ab
KYL		 1227 default: goto ignore;
1228 }
1229 break;
1230
1231 case HID_UP_HPVENDOR2:
1232 set_bit(EV_REP, input->evbit);
1233 switch (usage->hid & HID_USAGE) {
08fc9473 1234 case 0x001: map_key_clear(KEY_MICMUTE); break;
929578ab
KYL		 1235 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break;
1236 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break;
880d29f1
JS		 1237 default: goto ignore;
1238 }
1239 break;
dde5845a 1240
880d29f1
JS		 1241 case HID_UP_MSVENDOR:
1242 goto ignore;
dde5845a 1243
880d29f1
JS		 1244 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
1245 set_bit(EV_REP, input->evbit);
1246 goto ignore;
dde5845a 1247
880d29f1 1248 case HID_UP_LOGIVENDOR:
b466c1dd
SW		 1249 /* intentional fallback */
1250 case HID_UP_LOGIVENDOR2:
1251 /* intentional fallback */
1252 case HID_UP_LOGIVENDOR3:
880d29f1 1253 goto ignore;
fc99f22c 1254
880d29f1
JS		 1255 case HID_UP_PID:
1256 switch (usage->hid & HID_USAGE) {
1257 case 0xa4: map_key_clear(BTN_DEAD); break;
1258 default: goto ignore;
1259 }
1260 break;
dde5845a 1261
880d29f1
JS		 1262 default:
1263 unknown:
1264 if (field->report_size == 1) {
1265 if (field->report->type == HID_OUTPUT_REPORT) {
1266 map_led(LED_MISC);
dde5845a
JK		 1267 break;
1268 }
880d29f1 1269 map_key(BTN_MISC);
dde5845a 1270 break;
880d29f1
JS		 1271 }
1272 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
1273 map_rel(REL_MISC);
1274 break;
1275 }
1276 map_abs(ABS_MISC);
1277 break;
dde5845a
JK		 1278 }
1279
10bd065f 1280mapped:
35556bed
MZ		 1281 /* Mapping failed, bail out */
1282 if (!bit)
1283 return;
1284
4f388217
DT		 1285 if (device->driver->input_mapped &&
1286 device->driver->input_mapped(device, hidinput, field, usage,
1287 &bit, &max) < 0) {
1288 /*
1289 * The driver indicated that no further generic handling
1290 * of the usage is desired.
1291 */
1292 return;
1293 }
c500c971 1294
dde5845a
JK		 1295 set_bit(usage->type, input->evbit);
1296
190d7f02
BT		 1297 /*
1298 * This part is *really* controversial:
1299 * - HID aims at being generic so we should do our best to export
1300 * all incoming events
1301 * - HID describes what events are, so there is no reason for ABS_X
1302 * to be mapped to ABS_Y
1303 * - HID is using *_MISC+N as a default value, but nothing prevents
1304 * *_MISC+N to overwrite a legitimate even, which confuses userspace
1305 * (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different
1306 * processing)
1307 *
1308 * If devices still want to use this (at their own risk), they will
1309 * have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but
1310 * the default should be a reliable mapping.
1311 */
1312 while (usage->code <= max && test_and_set_bit(usage->code, bit)) {
1313 if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) {
1314 usage->code = find_next_zero_bit(bit,
1315 max + 1,
1316 usage->code);
1317 } else {
1318 device->status |= HID_STAT_DUP_DETECTED;
1319 goto ignore;
1320 }
1321 }
dde5845a
JK		 1322
1323 if (usage->code > max)
1324 goto ignore;
1325
dde5845a
JK		 1326 if (usage->type == EV_ABS) {
1327
1328 int a = field->logical_minimum;
1329 int b = field->logical_maximum;
1330
1331 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
1332 a = field->logical_minimum = 0;
1333 b = field->logical_maximum = 255;
1334 }
1335
1336 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
1337 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
1338 else input_set_abs_params(input, usage->code, a, b, 0, 0);
1339
4ea6e4ff
NK		 1340 input_abs_set_res(input, usage->code,
1341 hidinput_calc_abs_res(field, usage->code));
1342
6967b4d9
HR		 1343 /* use a larger default input buffer for MT devices */
1344 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
1345 input_set_events_per_packet(input, 60);
dde5845a
JK		 1346 }
1347
1348 if (usage->type == EV_ABS &&
1349 (usage->hat_min < usage->hat_max || usage->hat_dir)) {
1350 int i;
1351 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
1352 input_set_abs_params(input, i, -1, 1, 0, 0);
1353 set_bit(i, input->absbit);
1354 }
1355 if (usage->hat_dir && !field->dpad)
1356 field->dpad = usage->code;
1357 }
1358
2c1d8aea
JK		 1359 /* for those devices which produce Consumer volume usage as relative,
1360 * we emulate pressing volumeup/volumedown appropriate number of times
1361 * in hidinput_hid_event()
1362 */
1363 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1364 (usage->code == ABS_VOLUME)) {
1365 set_bit(KEY_VOLUMEUP, input->keybit);
1366 set_bit(KEY_VOLUMEDOWN, input->keybit);
1367 }
1368
c01d50d1
JK		 1369 if (usage->type == EV_KEY) {
1370 set_bit(EV_MSC, input->evbit);
1371 set_bit(MSC_SCAN, input->mscbit);
1372 }
1373
dde5845a 1374 return;
a635f9dd 1375
4f388217
DT		 1376ignore:
1377 usage->type = 0;
1378 usage->code = 0;
dde5845a
JK		 1379}
1380
2dc702c9
PH		 1381static void hidinput_handle_scroll(struct hid_usage *usage,
1382 struct input_dev *input,
1383 __s32 value)
1384{
1385 int code;
1386 int hi_res, lo_res;
1387
1388 if (value == 0)
1389 return;
1390
1391 if (usage->code == REL_WHEEL_HI_RES)
1392 code = REL_WHEEL;
1393 else
1394 code = REL_HWHEEL;
1395
1396 /*
1397 * Windows reports one wheel click as value 120. Where a high-res
1398 * scroll wheel is present, a fraction of 120 is reported instead.
1399 * Our REL_WHEEL_HI_RES axis does the same because all HW must
1400 * adhere to the 120 expectation.
1401 */
1402 hi_res = value * 120/usage->resolution_multiplier;
1403
1404 usage->wheel_accumulated += hi_res;
1405 lo_res = usage->wheel_accumulated/120;
1406 if (lo_res)
1407 usage->wheel_accumulated -= lo_res * 120;
1408
1409 input_event(input, EV_REL, code, lo_res);
1410 input_event(input, EV_REL, usage->code, hi_res);
1411}
1412
87562fcd
BT		 1413static void hid_report_release_tool(struct hid_report *report, struct input_dev *input,
1414 unsigned int tool)
1415{
1416 /* if the given tool is not currently reported, ignore */
1417 if (!test_bit(tool, input->key))
1418 return;
1419
1420 /*
1421 * if the given tool was previously set, release it,
1422 * release any TOUCH and send an EV_SYN
1423 */
1424 input_event(input, EV_KEY, BTN_TOUCH, 0);
1425 input_event(input, EV_KEY, tool, 0);
1426 input_event(input, EV_SYN, SYN_REPORT, 0);
1427
1428 report->tool = 0;
1429}
1430
1431static void hid_report_set_tool(struct hid_report *report, struct input_dev *input,
1432 unsigned int new_tool)
1433{
1434 if (report->tool != new_tool)
1435 hid_report_release_tool(report, input, report->tool);
1436
1437 input_event(input, EV_KEY, new_tool, 1);
1438 report->tool = new_tool;
1439}
1440
dde5845a
JK		 1441void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
1442{
1443 struct input_dev *input;
87562fcd 1444 struct hid_report *report = field->report;
b4482a4b 1445 unsigned *quirks = &hid->quirks;
dde5845a 1446
581c4484 1447 if (!usage->type)
dde5845a
JK		 1448 return;
1449
581c4484
DT		 1450 if (usage->type == EV_PWR) {
1451 hidinput_update_battery(hid, value);
1452 return;
1453 }
dde5845a 1454
581c4484 1455 if (!field->hidinput)
dde5845a
JK		 1456 return;
1457
581c4484
DT		 1458 input = field->hidinput->input;
1459
dde5845a
JK		 1460 if (usage->hat_min < usage->hat_max || usage->hat_dir) {
1461 int hat_dir = usage->hat_dir;
1462 if (!hat_dir)
1463 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
1464 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
1465 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);
fc99f22c
DM		 1466 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
1467 return;
1468 }
dde5845a 1469
883e0e36
NK		 1470 /*
1471 * Ignore out-of-range values as per HID specification,
c3883fe0
TK		 1472 * section 5.10 and 6.2.25, when NULL state bit is present.
1473 * When it's not, clamp the value to match Microsoft's input
1474 * driver as mentioned in "Required HID usages for digitizers":
1475 * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp
a688393b
JK		 1476 *
1477 * The logical_minimum < logical_maximum check is done so that we
1478 * don't unintentionally discard values sent by devices which
1479 * don't specify logical min and max.
883e0e36
NK		 1480 */
1481 if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
187ccd6c 1482 field->logical_minimum < field->logical_maximum) {
c3883fe0
TK		 1483 if (field->flags & HID_MAIN_ITEM_NULL_STATE &&
1484 (value < field->logical_minimum ||
1485 value > field->logical_maximum)) {
1486 dbg_hid("Ignoring out-of-range value %x\n", value);
1487 return;
1488 }
1489 value = clamp(value,
1490 field->logical_minimum,
1491 field->logical_maximum);
6da70669
JK		 1492 }
1493
f2d4ddfa 1494 switch (usage->hid) {
87562fcd
BT		 1495 case HID_DG_ERASER:
1496 report->tool_active |= !!value;
1497
1498 /*
1499 * if eraser is set, we must enforce BTN_TOOL_RUBBER
1500 * to accommodate for devices not following the spec.
1501 */
1502 if (value)
1503 hid_report_set_tool(report, input, BTN_TOOL_RUBBER);
1504 else if (report->tool != BTN_TOOL_RUBBER)
1505 /* value is off, tool is not rubber, ignore */
1506 return;
1507
1508 /* let hid-input set BTN_TOUCH */
1509 break;
1510
f2d4ddfa 1511 case HID_DG_INVERT:
87562fcd
BT		 1512 report->tool_active |= !!value;
1513
1514 /*
1515 * If invert is set, we store BTN_TOOL_RUBBER.
1516 */
1517 if (value)
1518 hid_report_set_tool(report, input, BTN_TOOL_RUBBER);
1519 else if (!report->tool_active)
1520 /* tool_active not set means Invert and Eraser are not set */
1521 hid_report_release_tool(report, input, BTN_TOOL_RUBBER);
1522
1523 /* no further processing */
dde5845a 1524 return;
dde5845a 1525
f2d4ddfa 1526 case HID_DG_INRANGE:
87562fcd
BT		 1527 report->tool_active |= !!value;
1528
1529 if (report->tool_active) {
1530 /*
1531 * if tool is not set but is marked as active,
1532 * assume ours
1533 */
1534 if (!report->tool)
1535 hid_report_set_tool(report, input, usage->code);
1536 } else {
1537 hid_report_release_tool(report, input, usage->code);
dde5845a 1538 }
87562fcd
BT		 1539
1540 /* reset tool_active for the next event */
1541 report->tool_active = false;
1542
1543 /* no further processing */
dde5845a 1544 return;
dde5845a 1545
87562fcd
BT		 1546 case HID_DG_TIPSWITCH:
1547 report->tool_active |= !!value;
1548
1549 /* if tool is set to RUBBER we should ignore the current value */
1550 if (report->tool == BTN_TOOL_RUBBER)
1551 return;
1552
1553 break;
1554
f2d4ddfa
BT		 1555 case HID_DG_TIPPRESSURE:
1556 if (*quirks & HID_QUIRK_NOTOUCH) {
1557 int a = field->logical_minimum;
1558 int b = field->logical_maximum;
1559
87562fcd
BT		 1560 if (value > a + ((b - a) >> 3)) {
1561 input_event(input, EV_KEY, BTN_TOUCH, 1);
1562 report->tool_active = true;
1563 }
f2d4ddfa
BT		 1564 }
1565 break;
dde5845a 1566
f2d4ddfa 1567 case HID_UP_PID | 0x83UL: /* Simultaneous Effects Max */
58037eb9 1568 dbg_hid("Maximum Effects - %d\n",value);
dde5845a 1569 return;
dde5845a 1570
f2d4ddfa 1571 case HID_UP_PID | 0x7fUL:
58037eb9 1572 dbg_hid("PID Pool Report\n");
dde5845a
JK		 1573 return;
1574 }
1575
f2d4ddfa
BT		 1576 switch (usage->type) {
1577 case EV_KEY:
1578 if (usage->code == 0) /* Key 0 is "unassigned", not KEY_UNKNOWN */
1579 return;
1580 break;
dde5845a 1581
f2d4ddfa
BT		 1582 case EV_REL:
1583 if (usage->code == REL_WHEEL_HI_RES ||
1584 usage->code == REL_HWHEEL_HI_RES) {
1585 hidinput_handle_scroll(usage, input, value);
1586 return;
1587 }
1588 break;
2dc702c9 1589
f2d4ddfa
BT		 1590 case EV_ABS:
1591 if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
1592 usage->code == ABS_VOLUME) {
1593 int count = abs(value);
1594 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
1595 int i;
1596
1597 for (i = 0; i < count; i++) {
1598 input_event(input, EV_KEY, direction, 1);
1599 input_sync(input);
1600 input_event(input, EV_KEY, direction, 0);
1601 input_sync(input);
1602 }
1603 return;
2c1d8aea 1604
f2d4ddfa
BT		 1605 } else if (((*quirks & HID_QUIRK_X_INVERT) && usage->code == ABS_X) ||
1606 ((*quirks & HID_QUIRK_Y_INVERT) && usage->code == ABS_Y))
1607 value = field->logical_maximum - value;
1608 break;
2c1d8aea
JK		 1609 }
1610
6ce901eb
DH		 1611 /*
1612 * Ignore reports for absolute data if the data didn't change. This is
1613 * not only an optimization but also fixes 'dead' key reports. Some
1614 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID
1615 * 0x31 and 0x32) report multiple keys, even though a localized keyboard
1616 * can only have one of them physically available. The 'dead' keys
1617 * report constant 0. As all map to the same keycode, they'd confuse
1618 * the input layer. If we filter the 'dead' keys on the HID level, we
1619 * skip the keycode translation and only forward real events.
1620 */
1621 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE |
1622 HID_MAIN_ITEM_BUFFERED_BYTE)) &&
8e7b3410 1623 (field->flags & HID_MAIN_ITEM_VARIABLE) &&
6ce901eb
DH		 1624 usage->usage_index < field->maxusage &&
1625 value == field->value[usage->usage_index])
1626 return;
1627
c01d50d1 1628 /* report the usage code as scancode if the key status has changed */
323ddaa8
JB		 1629 if (usage->type == EV_KEY &&
1630 (!test_bit(usage->code, input->key)) == value)
c01d50d1 1631 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
1fe8736d 1632
dde5845a
JK		 1633 input_event(input, usage->type, usage->code, value);
1634
3eb4351a
DT		 1635 if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
1636 usage->type == EV_KEY && value) {
1637 input_sync(input);
dde5845a 1638 input_event(input, usage->type, usage->code, 0);
3eb4351a 1639 }
dde5845a
JK		 1640}
1641
1642void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1643{
1644 struct hid_input *hidinput;
1645
24750f3e
HR		 1646 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1647 return;
1648
dde5845a
JK		 1649 list_for_each_entry(hidinput, &hid->inputs, list)
1650 input_sync(hidinput->input);
1651}
229695e5 1652EXPORT_SYMBOL_GPL(hidinput_report_event);
dde5845a 1653
5904a3f9
MW		 1654static int hidinput_find_field(struct hid_device *hid, unsigned int type,
1655 unsigned int code, struct hid_field **field)
dde5845a
JK		 1656{
1657 struct hid_report *report;
1658 int i, j;
1659
1660 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1661 for (i = 0; i < report->maxfield; i++) {
1662 *field = report->field[i];
1663 for (j = 0; j < (*field)->maxusage; j++)
1664 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1665 return j;
1666 }
1667 }
1668 return -1;
1669}
1670
4371ea82
DK		 1671struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1672{
1673 struct hid_report *report;
1674 struct hid_field *field;
1675 int i, j;
1676
1677 list_for_each_entry(report,
1678 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1679 list) {
1680 for (i = 0; i < report->maxfield; i++) {
1681 field = report->field[i];
1682 for (j = 0; j < field->maxusage; j++)
1683 if (field->usage[j].type == EV_LED)
1684 return field;
1685 }
1686 }
1687 return NULL;
1688}
1689EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1690
1691unsigned int hidinput_count_leds(struct hid_device *hid)
1692{
1693 struct hid_report *report;
1694 struct hid_field *field;
1695 int i, j;
1696 unsigned int count = 0;
1697
1698 list_for_each_entry(report,
1699 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1700 list) {
1701 for (i = 0; i < report->maxfield; i++) {
1702 field = report->field[i];
1703 for (j = 0; j < field->maxusage; j++)
1704 if (field->usage[j].type == EV_LED &&
1705 field->value[j])
1706 count += 1;
1707 }
1708 }
1709 return count;
1710}
1711EXPORT_SYMBOL_GPL(hidinput_count_leds);
1712
50c9d75b
DH		 1713static void hidinput_led_worker(struct work_struct *work)
1714{
1715 struct hid_device *hid = container_of(work, struct hid_device,
1716 led_work);
1717 struct hid_field *field;
1718 struct hid_report *report;
3064a03b
AM		 1719 int ret;
1720 u32 len;
50c9d75b
DH		 1721 __u8 *buf;
1722
1723 field = hidinput_get_led_field(hid);
1724 if (!field)
1725 return;
1726
1727 /*
1728 * field->report is accessed unlocked regarding HID core. So there might
1729 * be another incoming SET-LED request from user-space, which changes
1730 * the LED state while we assemble our outgoing buffer. However, this
1731 * doesn't matter as hid_output_report() correctly converts it into a
1732 * boolean value no matter what information is currently set on the LED
1733 * field (even garbage). So the remote device will always get a valid
1734 * request.
1735 * And in case we send a wrong value, a next led worker is spawned
1736 * for every SET-LED request so the following worker will send the
1737 * correct value, guaranteed!
1738 */
1739
1740 report = field->report;
1741
1742 /* use custom SET_REPORT request if possible (asynchronous) */
1743 if (hid->ll_driver->request)
1744 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT);
1745
1746 /* fall back to generic raw-output-report */
dabb05c6 1747 len = hid_report_len(report);
9d27f432 1748 buf = hid_alloc_report_buf(report, GFP_KERNEL);
50c9d75b
DH		 1749 if (!buf)
1750 return;
1751
1752 hid_output_report(report, buf);
1753 /* synchronous output report */
2ebaebcf
BT		 1754 ret = hid_hw_output_report(hid, buf, len);
1755 if (ret == -ENOSYS)
1756 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT,
1757 HID_REQ_SET_REPORT);
50c9d75b
DH		 1758 kfree(buf);
1759}
1760
1761static int hidinput_input_event(struct input_dev *dev, unsigned int type,
1762 unsigned int code, int value)
1763{
1764 struct hid_device *hid = input_get_drvdata(dev);
1765 struct hid_field *field;
1766 int offset;
1767
1768 if (type == EV_FF)
1769 return input_ff_event(dev, type, code, value);
1770
1771 if (type != EV_LED)
1772 return -1;
1773
1774 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
1775 hid_warn(dev, "event field not found\n");
1776 return -1;
1777 }
1778
1779 hid_set_field(field, offset, value);
1780
1781 schedule_work(&hid->led_work);
1782 return 0;
1783}
1784
7c379146
JK		 1785static int hidinput_open(struct input_dev *dev)
1786{
e0712985
DT		 1787 struct hid_device *hid = input_get_drvdata(dev);
1788
5bea7660 1789 return hid_hw_open(hid);
7c379146
JK		 1790}
1791
1792static void hidinput_close(struct input_dev *dev)
1793{
e0712985
DT		 1794 struct hid_device *hid = input_get_drvdata(dev);
1795
5bea7660 1796 hid_hw_close(hid);
7c379146
JK		 1797}
1798
d43c17ea
BT		 1799static bool __hidinput_change_resolution_multipliers(struct hid_device *hid,
1800 struct hid_report *report, bool use_logical_max)
2dc702c9 1801{
2dc702c9 1802 struct hid_usage *usage;
d43c17ea 1803 bool update_needed = false;
1ad273d6 1804 bool get_report_completed = false;
2dc702c9
PH		 1805 int i, j;
1806
d43c17ea
BT		 1807 if (report->maxfield == 0)
1808 return false;
2dc702c9 1809
d43c17ea
BT		 1810 for (i = 0; i < report->maxfield; i++) {
1811 __s32 value = use_logical_max ?
1812 report->field[i]->logical_maximum :
1813 report->field[i]->logical_minimum;
1814
1815 /* There is no good reason for a Resolution
1816 * Multiplier to have a count other than 1.
1817 * Ignore that case.
2dc702c9 1818 */
d43c17ea
BT		 1819 if (report->field[i]->report_count != 1)
1820 continue;
2dc702c9 1821
d43c17ea
BT		 1822 for (j = 0; j < report->field[i]->maxusage; j++) {
1823 usage = &report->field[i]->usage[j];
2dc702c9 1824
d43c17ea 1825 if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER)
2dc702c9
PH		 1826 continue;
1827
1ad273d6
PH		 1828 /*
1829 * If we have more than one feature within this
1830 * report we need to fill in the bits from the
1831 * others before we can overwrite the ones for the
1832 * Resolution Multiplier.
1833 *
1834 * But if we're not allowed to read from the device,
1835 * we just bail. Such a device should not exist
1836 * anyway.
1837 */
1838 if (!get_report_completed && report->maxfield > 1) {
1839 if (hid->quirks & HID_QUIRK_NO_INIT_REPORTS)
1840 return update_needed;
1841
1842 hid_hw_request(hid, report, HID_REQ_GET_REPORT);
1843 hid_hw_wait(hid);
1844 get_report_completed = true;
1845 }
1846
39b3c3a5 1847 report->field[i]->value[j] = value;
d43c17ea
BT		 1848 update_needed = true;
1849 }
1850 }
1851
1852 return update_needed;
1853}
2dc702c9 1854
d43c17ea
BT		 1855static void hidinput_change_resolution_multipliers(struct hid_device *hid)
1856{
1857 struct hid_report_enum *rep_enum;
1858 struct hid_report *rep;
1859 int ret;
2dc702c9 1860
d43c17ea
BT		 1861 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1862 list_for_each_entry(rep, &rep_enum->report_list, list) {
1863 bool update_needed = __hidinput_change_resolution_multipliers(hid,
1864 rep, true);
1865
1866 if (update_needed) {
1867 ret = __hid_request(hid, rep, HID_REQ_SET_REPORT);
1868 if (ret) {
1869 __hidinput_change_resolution_multipliers(hid,
1870 rep, false);
1871 return;
2dc702c9
PH		 1872 }
1873 }
2dc702c9
PH		 1874 }
1875
1876 /* refresh our structs */
1877 hid_setup_resolution_multiplier(hid);
1878}
1879
f635bd11
HR		 1880static void report_features(struct hid_device *hid)
1881{
1882 struct hid_driver *drv = hid->driver;
1883 struct hid_report_enum *rep_enum;
1884 struct hid_report *rep;
581c4484 1885 struct hid_usage *usage;
f635bd11
HR		 1886 int i, j;
1887
f635bd11
HR		 1888 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1889 list_for_each_entry(rep, &rep_enum->report_list, list)
cc6b54aa
BT		 1890 for (i = 0; i < rep->maxfield; i++) {
1891 /* Ignore if report count is out of bounds. */
1892 if (rep->field[i]->report_count < 1)
1893 continue;
1894
c5a92aa3 1895 for (j = 0; j < rep->field[i]->maxusage; j++) {
581c4484
DT		 1896 usage = &rep->field[i]->usage[j];
1897
c5a92aa3 1898 /* Verify if Battery Strength feature is available */
581c4484
DT		 1899 if (usage->hid == HID_DC_BATTERYSTRENGTH)
1900 hidinput_setup_battery(hid, HID_FEATURE_REPORT,
9de07a4e 1901 rep->field[i], false);
c5a92aa3
DN		 1902
1903 if (drv->feature_mapping)
581c4484 1904 drv->feature_mapping(hid, rep->field[i], usage);
c5a92aa3 1905 }
cc6b54aa 1906 }
f635bd11
HR		 1907}
1908
c554bb04
BT		 1909static struct hid_input *hidinput_allocate(struct hid_device *hid,
1910 unsigned int application)
ae751fa8
BT		 1911{
1912 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1913 struct input_dev *input_dev = input_allocate_device();
c554bb04 1914 const char *suffix = NULL;
d7065620 1915 size_t suffix_len, name_len;
c554bb04
BT		 1916
1917 if (!hidinput || !input_dev)
1918 goto fail;
1919
1920 if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) &&
1921 hid->maxapplication > 1) {
1922 switch (application) {
1923 case HID_GD_KEYBOARD:
1924 suffix = "Keyboard";
1925 break;
1926 case HID_GD_KEYPAD:
1927 suffix = "Keypad";
1928 break;
1929 case HID_GD_MOUSE:
1930 suffix = "Mouse";
1931 break;
c0ee1d57
MW		 1932 case HID_DG_PEN:
1933 /*
1934 * yes, there is an issue here:
1935 * DG_PEN -> "Stylus"
1936 * DG_STYLUS -> "Pen"
1937 * But changing this now means users with config snippets
1938 * will have to change it and the test suite will not be happy.
1939 */
1940 suffix = "Stylus";
1941 break;
c554bb04
BT		 1942 case HID_DG_STYLUS:
1943 suffix = "Pen";
1944 break;
1945 case HID_DG_TOUCHSCREEN:
1946 suffix = "Touchscreen";
1947 break;
1948 case HID_DG_TOUCHPAD:
1949 suffix = "Touchpad";
1950 break;
1951 case HID_GD_SYSTEM_CONTROL:
1952 suffix = "System Control";
1953 break;
1954 case HID_CP_CONSUMER_CONTROL:
1955 suffix = "Consumer Control";
1956 break;
1957 case HID_GD_WIRELESS_RADIO_CTLS:
1958 suffix = "Wireless Radio Control";
1959 break;
ba6b055e
BT		 1960 case HID_GD_SYSTEM_MULTIAXIS:
1961 suffix = "System Multi Axis";
1962 break;
c554bb04
BT		 1963 default:
1964 break;
1965 }
1966 }
1967
1968 if (suffix) {
d7065620
BT		 1969 name_len = strlen(hid->name);
1970 suffix_len = strlen(suffix);
1971 if ((name_len < suffix_len) ||
1972 strcmp(hid->name + name_len - suffix_len, suffix)) {
1973 hidinput->name = kasprintf(GFP_KERNEL, "%s %s",
1974 hid->name, suffix);
1975 if (!hidinput->name)
1976 goto fail;
1977 }
ae751fa8
BT		 1978 }
1979
1980 input_set_drvdata(input_dev, hid);
3c86726c 1981 input_dev->event = hidinput_input_event;
ae751fa8
BT		 1982 input_dev->open = hidinput_open;
1983 input_dev->close = hidinput_close;
1984 input_dev->setkeycode = hidinput_setkeycode;
1985 input_dev->getkeycode = hidinput_getkeycode;
1986
c554bb04 1987 input_dev->name = hidinput->name ? hidinput->name : hid->name;
ae751fa8
BT		 1988 input_dev->phys = hid->phys;
1989 input_dev->uniq = hid->uniq;
1990 input_dev->id.bustype = hid->bus;
1991 input_dev->id.vendor = hid->vendor;
1992 input_dev->id.product = hid->product;
1993 input_dev->id.version = hid->version;
bbe31754 1994 input_dev->dev.parent = &hid->dev;
e1b63c01 1995
ae751fa8 1996 hidinput->input = input_dev;
0d6c3011 1997 hidinput->application = application;
ae751fa8
BT		 1998 list_add_tail(&hidinput->list, &hid->inputs);
1999
e1b63c01
BT		 2000 INIT_LIST_HEAD(&hidinput->reports);
2001
ae751fa8 2002 return hidinput;
c554bb04
BT		 2003
2004fail:
2005 kfree(hidinput);
2006 input_free_device(input_dev);
2007 hid_err(hid, "Out of memory during hid input probe\n");
2008 return NULL;
ae751fa8
BT		 2009}
2010
4f22decf
BT		 2011static bool hidinput_has_been_populated(struct hid_input *hidinput)
2012{
2013 int i;
2014 unsigned long r = 0;
2015
2016 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++)
2017 r |= hidinput->input->evbit[i];
2018
2019 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++)
2020 r |= hidinput->input->keybit[i];
2021
2022 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++)
2023 r |= hidinput->input->relbit[i];
2024
2025 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++)
2026 r |= hidinput->input->absbit[i];
2027
2028 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++)
2029 r |= hidinput->input->mscbit[i];
2030
2031 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++)
2032 r |= hidinput->input->ledbit[i];
2033
2034 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++)
2035 r |= hidinput->input->sndbit[i];
2036
2037 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++)
2038 r |= hidinput->input->ffbit[i];
2039
2040 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++)
2041 r |= hidinput->input->swbit[i];
2042
2043 return !!r;
2044}
2045
2046static void hidinput_cleanup_hidinput(struct hid_device *hid,
2047 struct hid_input *hidinput)
2048{
2049 struct hid_report *report;
2050 int i, k;
2051
2052 list_del(&hidinput->list);
2053 input_free_device(hidinput->input);
c554bb04 2054 kfree(hidinput->name);
4f22decf
BT		 2055
2056 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
2057 if (k == HID_OUTPUT_REPORT &&
2058 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
2059 continue;
2060
2061 list_for_each_entry(report, &hid->report_enum[k].report_list,
2062 list) {
2063
2064 for (i = 0; i < report->maxfield; i++)
2065 if (report->field[i]->hidinput == hidinput)
2066 report->field[i]->hidinput = NULL;
2067 }
2068 }
2069
2070 kfree(hidinput);
2071}
2072
72d19459
BT		 2073static struct hid_input *hidinput_match(struct hid_report *report)
2074{
2075 struct hid_device *hid = report->device;
2076 struct hid_input *hidinput;
2077
2078 list_for_each_entry(hidinput, &hid->inputs, list) {
2079 if (hidinput->report &&
2080 hidinput->report->id == report->id)
2081 return hidinput;
2082 }
2083
2084 return NULL;
2085}
2086
f07b3c1d
BT		 2087static struct hid_input *hidinput_match_application(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) {
0d6c3011 2093 if (hidinput->application == report->application)
f07b3c1d 2094 return hidinput;
7c7d7ac7
DT		 2095
2096 /*
2097 * Keep SystemControl and ConsumerControl applications together
2098 * with the main keyboard, if present.
2099 */
2100 if ((report->application == HID_GD_SYSTEM_CONTROL ||
2101 report->application == HID_CP_CONSUMER_CONTROL) &&
2102 hidinput->application == HID_GD_KEYBOARD) {
2103 return hidinput;
2104 }
f07b3c1d
BT		 2105 }
2106
2107 return NULL;
2108}
2109
72d19459
BT		 2110static inline void hidinput_configure_usages(struct hid_input *hidinput,
2111 struct hid_report *report)
2112{
5c20000a
BT		 2113 int i, j, k;
2114 int first_field_index = 0;
2115 int slot_collection_index = -1;
2116 int prev_collection_index = -1;
2117 unsigned int slot_idx = 0;
2118 struct hid_field *field;
2119
2120 /*
2121 * First tag all the fields that are part of a slot,
2122 * a slot needs to have one Contact ID in the collection
2123 */
2124 for (i = 0; i < report->maxfield; i++) {
2125 field = report->field[i];
2126
2127 /* ignore fields without usage */
2128 if (field->maxusage < 1)
2129 continue;
2130
2131 /*
2132 * janitoring when collection_index changes
2133 */
2134 if (prev_collection_index != field->usage->collection_index) {
2135 prev_collection_index = field->usage->collection_index;
2136 first_field_index = i;
2137 }
2138
2139 /*
2140 * if we already found a Contact ID in the collection,
2141 * tag and continue to the next.
2142 */
2143 if (slot_collection_index == field->usage->collection_index) {
2144 field->slot_idx = slot_idx;
2145 continue;
2146 }
2147
2148 /* check if the current field has Contact ID */
2149 for (j = 0; j < field->maxusage; j++) {
2150 if (field->usage[j].hid == HID_DG_CONTACTID) {
2151 slot_collection_index = field->usage->collection_index;
2152 slot_idx++;
2153
2154 /*
2155 * mark all previous fields and this one in the
2156 * current collection to be slotted.
2157 */
2158 for (k = first_field_index; k <= i; k++)
2159 report->field[k]->slot_idx = slot_idx;
2160 break;
2161 }
2162 }
2163 }
72d19459
BT		 2164
2165 for (i = 0; i < report->maxfield; i++)
2166 for (j = 0; j < report->field[i]->maxusage; j++)
2167 hidinput_configure_usage(hidinput, report->field[i],
048cddfd
BT		 2168 report->field[i]->usage + j,
2169 j);
72d19459
BT		 2170}
2171
dde5845a
JK		 2172/*
2173 * Register the input device; print a message.
2174 * Configure the input layer interface
2175 * Read all reports and initialize the absolute field values.
2176 */
2177
93c10132 2178int hidinput_connect(struct hid_device *hid, unsigned int force)
dde5845a 2179{
9ebf3d76 2180 struct hid_driver *drv = hid->driver;
dde5845a 2181 struct hid_report *report;
72d19459 2182 struct hid_input *next, *hidinput = NULL;
c554bb04 2183 unsigned int application;
72d19459 2184 int i, k;
dde5845a
JK		 2185
2186 INIT_LIST_HEAD(&hid->inputs);
50c9d75b 2187 INIT_WORK(&hid->led_work, hidinput_led_worker);
dde5845a 2188
190d7f02
BT		 2189 hid->status &= ~HID_STAT_DUP_DETECTED;
2190
93c10132
JS		 2191 if (!force) {
2192 for (i = 0; i < hid->maxcollection; i++) {
2193 struct hid_collection *col = &hid->collection[i];
2194 if (col->type == HID_COLLECTION_APPLICATION ||
2195 col->type == HID_COLLECTION_PHYSICAL)
2196 if (IS_INPUT_APPLICATION(col->usage))
2197 break;
2198 }
dde5845a 2199
93c10132
JS		 2200 if (i == hid->maxcollection)
2201 return -1;
2202 }
dde5845a 2203
f635bd11
HR		 2204 report_features(hid);
2205
2206 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
0d2689c0
BT		 2207 if (k == HID_OUTPUT_REPORT &&
2208 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
2209 continue;
5556feae 2210
dde5845a
JK		 2211 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
2212
2213 if (!report->maxfield)
2214 continue;
2215
c554bb04
BT		 2216 application = report->application;
2217
72d19459
BT		 2218 /*
2219 * Find the previous hidinput report attached
2220 * to this report id.
2221 */
2222 if (hid->quirks & HID_QUIRK_MULTI_INPUT)
2223 hidinput = hidinput_match(report);
f07b3c1d
BT		 2224 else if (hid->maxapplication > 1 &&
2225 (hid->quirks & HID_QUIRK_INPUT_PER_APP))
2226 hidinput = hidinput_match_application(report);
72d19459 2227
dde5845a 2228 if (!hidinput) {
c554bb04 2229 hidinput = hidinput_allocate(hid, application);
ae751fa8 2230 if (!hidinput)
368d290b 2231 goto out_unwind;
dde5845a
JK		 2232 }
2233
72d19459 2234 hidinput_configure_usages(hidinput, report);
4f22decf 2235
72d19459 2236 if (hid->quirks & HID_QUIRK_MULTI_INPUT)
dde5845a 2237 hidinput->report = report;
e1b63c01
BT		 2238
2239 list_add_tail(&report->hidinput_list,
2240 &hidinput->reports);
dde5845a 2241 }
0d2689c0 2242 }
dde5845a 2243
2dc702c9
PH		 2244 hidinput_change_resolution_multipliers(hid);
2245
72d19459 2246 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
39335d1c
BT		 2247 if (drv->input_configured &&
2248 drv->input_configured(hid, hidinput))
2249 goto out_unwind;
2250
2251 if (!hidinput_has_been_populated(hidinput)) {
72d19459
BT		 2252 /* no need to register an input device not populated */
2253 hidinput_cleanup_hidinput(hid, hidinput);
2254 continue;
2255 }
2256
72d19459
BT		 2257 if (input_register_device(hidinput->input))
2258 goto out_unwind;
2259 hidinput->registered = true;
4f22decf
BT		 2260 }
2261
2262 if (list_empty(&hid->inputs)) {
2263 hid_err(hid, "No inputs registered, leaving\n");
2264 goto out_unwind;
2265 }
2266
190d7f02
BT		 2267 if (hid->status & HID_STAT_DUP_DETECTED)
2268 hid_dbg(hid,
2269 "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n");
2270
dde5845a 2271 return 0;
368d290b 2272
368d290b
DH		 2273out_unwind:
2274 /* unwind the ones we already registered */
2275 hidinput_disconnect(hid);
2276
2277 return -1;
dde5845a 2278}
229695e5 2279EXPORT_SYMBOL_GPL(hidinput_connect);
dde5845a
JK		 2280
2281void hidinput_disconnect(struct hid_device *hid)
2282{
2283 struct hid_input *hidinput, *next;
2284
4f5ca836
JF		 2285 hidinput_cleanup_battery(hid);
2286
dde5845a
JK		 2287 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
2288 list_del(&hidinput->list);
72d19459
BT		 2289 if (hidinput->registered)
2290 input_unregister_device(hidinput->input);
2291 else
2292 input_free_device(hidinput->input);
e38c0ac5 2293 kfree(hidinput->name);
dde5845a
JK		 2294 kfree(hidinput);
2295 }
50c9d75b
DH		 2296
2297 /* led_work is spawned by input_dev callbacks, but doesn't access the
2298 * parent input_dev at all. Once all input devices are removed, we
2299 * know that led_work will never get restarted, so we can cancel it
2300 * synchronously and are safe. */
2301 cancel_work_sync(&hid->led_work);
dde5845a 2302}
229695e5 2303EXPORT_SYMBOL_GPL(hidinput_disconnect);
Linux 6.x block layer and io_uring tree(s)