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Merge tag 'iio-fixes-for-6.3a' of https://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 },
cb963b2c 373 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_ASUS_TP420IA_TOUCHSCREEN),
374 HID_BATTERY_QUIRK_IGNORE },
7c38e769
SM		 375 { HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550_TOUCHSCREEN),
376 HID_BATTERY_QUIRK_IGNORE },
14902f89
HG		 377 { HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550VE_TOUCHSCREEN),
378 HID_BATTERY_QUIRK_IGNORE },
037c1aae
JE		 379 { HID_USB_DEVICE(USB_VENDOR_ID_UGEE, USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_L),
380 HID_BATTERY_QUIRK_AVOID_QUERY },
9266a881
JE		 381 { HID_USB_DEVICE(USB_VENDOR_ID_UGEE, USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_PRO_MW),
382 HID_BATTERY_QUIRK_AVOID_QUERY },
7744ca57
JE		 383 { HID_USB_DEVICE(USB_VENDOR_ID_UGEE, USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_PRO_SW),
384 HID_BATTERY_QUIRK_AVOID_QUERY },
b74edf9b
TD		 385 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_15),
386 HID_BATTERY_QUIRK_IGNORE },
f3193ea1
KK		 387 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_15T_DR100),
388 HID_BATTERY_QUIRK_IGNORE },
cec827d6
JE		 389 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_EU0009NV),
390 HID_BATTERY_QUIRK_IGNORE },
decfe496
ED		 391 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_15),
392 HID_BATTERY_QUIRK_IGNORE },
ebebf05a
LG		 393 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_13_AW0020NG),
394 HID_BATTERY_QUIRK_IGNORE },
b5539722
ZTV		 395 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_SURFACE_GO_TOUCHSCREEN),
396 HID_BATTERY_QUIRK_IGNORE },
db925d80
ML		 397 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_SURFACE_GO2_TOUCHSCREEN),
398 HID_BATTERY_QUIRK_IGNORE },
3a47fa7b
SK		 399 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_LENOVO_YOGA_C630_TOUCHSCREEN),
400 HID_BATTERY_QUIRK_IGNORE },
bbc21cfd
JF		 401 {}
402};
403
404static unsigned find_battery_quirk(struct hid_device *hdev)
405{
406 unsigned quirks = 0;
407 const struct hid_device_id *match;
408
409 match = hid_match_id(hdev, hid_battery_quirks);
410 if (match != NULL)
411 quirks = match->driver_data;
412
413 return quirks;
414}
415
581c4484
DT		 416static int hidinput_scale_battery_capacity(struct hid_device *dev,
417 int value)
418{
419 if (dev->battery_min < dev->battery_max &&
420 value >= dev->battery_min && value <= dev->battery_max)
421 value = ((value - dev->battery_min) * 100) /
422 (dev->battery_max - dev->battery_min);
423
424 return value;
425}
426
427static int hidinput_query_battery_capacity(struct hid_device *dev)
428{
429 u8 *buf;
430 int ret;
431
4f57cace 432 buf = kmalloc(4, GFP_KERNEL);
581c4484
DT		 433 if (!buf)
434 return -ENOMEM;
435
4f57cace 436 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 4,
581c4484 437 dev->battery_report_type, HID_REQ_GET_REPORT);
4f57cace 438 if (ret < 2) {
581c4484
DT		 439 kfree(buf);
440 return -ENODATA;
441 }
442
443 ret = hidinput_scale_battery_capacity(dev, buf[1]);
444 kfree(buf);
445 return ret;
446}
447
4f5ca836
JF		 448static int hidinput_get_battery_property(struct power_supply *psy,
449 enum power_supply_property prop,
450 union power_supply_propval *val)
451{
297d716f 452 struct hid_device *dev = power_supply_get_drvdata(psy);
581c4484 453 int value;
4f5ca836
JF		 454 int ret = 0;
455
456 switch (prop) {
457 case POWER_SUPPLY_PROP_PRESENT:
458 case POWER_SUPPLY_PROP_ONLINE:
459 val->intval = 1;
460 break;
461
462 case POWER_SUPPLY_PROP_CAPACITY:
2e210bbb
DT		 463 if (dev->battery_status != HID_BATTERY_REPORTED &&
464 !dev->battery_avoid_query) {
581c4484
DT		 465 value = hidinput_query_battery_capacity(dev);
466 if (value < 0)
467 return value;
468 } else {
469 value = dev->battery_capacity;
c5a92aa3
DN		 470 }
471
581c4484 472 val->intval = value;
4f5ca836
JF		 473 break;
474
475 case POWER_SUPPLY_PROP_MODEL_NAME:
476 val->strval = dev->name;
477 break;
478
c5a92aa3 479 case POWER_SUPPLY_PROP_STATUS:
2e210bbb
DT		 480 if (dev->battery_status != HID_BATTERY_REPORTED &&
481 !dev->battery_avoid_query) {
581c4484
DT		 482 value = hidinput_query_battery_capacity(dev);
483 if (value < 0)
484 return value;
485
486 dev->battery_capacity = value;
2e210bbb 487 dev->battery_status = HID_BATTERY_QUERIED;
581c4484
DT		 488 }
489
2e210bbb 490 if (dev->battery_status == HID_BATTERY_UNKNOWN)
581c4484 491 val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
581c4484 492 else
a608dc1c 493 val->intval = dev->battery_charge_status;
c5a92aa3
DN		 494 break;
495
45d9c273
JF		 496 case POWER_SUPPLY_PROP_SCOPE:
497 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
498 break;
499
4f5ca836
JF		 500 default:
501 ret = -EINVAL;
502 break;
503 }
504
505 return ret;
506}
507
9de07a4e
JC		 508static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
509 struct hid_field *field, bool is_percentage)
4f5ca836 510{
581c4484 511 struct power_supply_desc *psy_desc;
297d716f 512 struct power_supply_config psy_cfg = { .drv_data = dev, };
bbc21cfd 513 unsigned quirks;
2f2e3f6d 514 s32 min, max;
581c4484 515 int error;
2f2e3f6d 516
581c4484
DT		 517 if (dev->battery)
518 return 0; /* already initialized? */
4f5ca836 519
5d9374cf
AP		 520 quirks = find_battery_quirk(dev);
521
522 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
523 dev->bus, dev->vendor, dev->product, dev->version, quirks);
524
525 if (quirks & HID_BATTERY_QUIRK_IGNORE)
581c4484 526 return 0;
5d9374cf 527
297d716f 528 psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL);
581c4484
DT		 529 if (!psy_desc)
530 return -ENOMEM;
4f5ca836 531
09223865
DT		 532 psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery",
533 strlen(dev->uniq) ?
534 dev->uniq : dev_name(&dev->dev));
581c4484
DT		 535 if (!psy_desc->name) {
536 error = -ENOMEM;
537 goto err_free_mem;
297d716f
KK		 538 }
539
540 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY;
541 psy_desc->properties = hidinput_battery_props;
542 psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props);
543 psy_desc->use_for_apm = 0;
544 psy_desc->get_property = hidinput_get_battery_property;
4f5ca836 545
2f2e3f6d
JF		 546 min = field->logical_minimum;
547 max = field->logical_maximum;
548
9de07a4e 549 if (is_percentage || (quirks & HID_BATTERY_QUIRK_PERCENT)) {
bbc21cfd
JF		 550 min = 0;
551 max = 100;
552 }
553
652aa6a9
JF		 554 if (quirks & HID_BATTERY_QUIRK_FEATURE)
555 report_type = HID_FEATURE_REPORT;
556
4f5ca836
JF		 557 dev->battery_min = min;
558 dev->battery_max = max;
fb8ac91b 559 dev->battery_report_type = report_type;
2f2e3f6d 560 dev->battery_report_id = field->report->id;
a608dc1c 561 dev->battery_charge_status = POWER_SUPPLY_STATUS_DISCHARGING;
4f5ca836 562
2e210bbb
DT		 563 /*
564 * Stylus is normally not connected to the device and thus we
565 * can't query the device and get meaningful battery strength.
566 * We have to wait for the device to report it on its own.
567 */
568 dev->battery_avoid_query = report_type == HID_INPUT_REPORT &&
569 field->physical == HID_DG_STYLUS;
570
037c1aae
JE		 571 if (quirks & HID_BATTERY_QUIRK_AVOID_QUERY)
572 dev->battery_avoid_query = true;
573
297d716f
KK		 574 dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg);
575 if (IS_ERR(dev->battery)) {
581c4484
DT		 576 error = PTR_ERR(dev->battery);
577 hid_warn(dev, "can't register power supply: %d\n", error);
578 goto err_free_name;
4f5ca836 579 }
2f2e3f6d 580
581c4484
DT		 581 power_supply_powers(dev->battery, &dev->dev);
582 return 0;
583
584err_free_name:
585 kfree(psy_desc->name);
586err_free_mem:
587 kfree(psy_desc);
588 dev->battery = NULL;
589 return error;
4f5ca836
JF		 590}
591
592static void hidinput_cleanup_battery(struct hid_device *dev)
593{
0621809e
KK		 594 const struct power_supply_desc *psy_desc;
595
297d716f 596 if (!dev->battery)
4f5ca836
JF		 597 return;
598
0621809e 599 psy_desc = dev->battery->desc;
297d716f 600 power_supply_unregister(dev->battery);
0621809e
KK		 601 kfree(psy_desc->name);
602 kfree(psy_desc);
297d716f 603 dev->battery = NULL;
4f5ca836 604}
581c4484
DT		 605
606static void hidinput_update_battery(struct hid_device *dev, int value)
607{
0152b29c
DT		 608 int capacity;
609
581c4484
DT		 610 if (!dev->battery)
611 return;
612
613 if (value == 0 || value < dev->battery_min || value > dev->battery_max)
614 return;
615
0152b29c
DT		 616 capacity = hidinput_scale_battery_capacity(dev, value);
617
2e210bbb 618 if (dev->battery_status != HID_BATTERY_REPORTED ||
c6838eee 619 capacity != dev->battery_capacity ||
620 ktime_after(ktime_get_coarse(), dev->battery_ratelimit_time)) {
0152b29c 621 dev->battery_capacity = capacity;
2e210bbb 622 dev->battery_status = HID_BATTERY_REPORTED;
c6838eee 623 dev->battery_ratelimit_time =
624 ktime_add_ms(ktime_get_coarse(), 30 * 1000);
0152b29c
DT		 625 power_supply_changed(dev->battery);
626 }
581c4484 627}
a608dc1c
JE		 628
629static bool hidinput_set_battery_charge_status(struct hid_device *dev,
630 unsigned int usage, int value)
631{
632 switch (usage) {
633 case HID_BAT_CHARGING:
634 dev->battery_charge_status = value ?
635 POWER_SUPPLY_STATUS_CHARGING :
636 POWER_SUPPLY_STATUS_DISCHARGING;
637 return true;
638 }
639
640 return false;
641}
4f5ca836 642#else /* !CONFIG_HID_BATTERY_STRENGTH */
581c4484 643static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
9de07a4e 644 struct hid_field *field, bool is_percentage)
4f5ca836 645{
581c4484 646 return 0;
4f5ca836
JF		 647}
648
649static void hidinput_cleanup_battery(struct hid_device *dev)
650{
651}
581c4484
DT		 652
653static void hidinput_update_battery(struct hid_device *dev, int value)
654{
655}
a608dc1c
JE		 656
657static bool hidinput_set_battery_charge_status(struct hid_device *dev,
658 unsigned int usage, int value)
659{
660 return false;
661}
4f5ca836
JF		 662#endif /* CONFIG_HID_BATTERY_STRENGTH */
663
bcfa8d14
TW		 664static bool hidinput_field_in_collection(struct hid_device *device, struct hid_field *field,
665 unsigned int type, unsigned int usage)
666{
667 struct hid_collection *collection;
668
669 collection = &device->collection[field->usage->collection_index];
670
671 return collection->type == type && collection->usage == usage;
672}
673
dde5845a 674static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
048cddfd 675 struct hid_usage *usage, unsigned int usage_index)
dde5845a
JK		 676{
677 struct input_dev *input = hidinput->input;
e0712985 678 struct hid_device *device = input_get_drvdata(input);
5c20000a 679 const struct usage_priority *usage_priority = NULL;
3715ade9 680 int max = 0, code;
048cddfd 681 unsigned int i = 0;
dde5845a
JK		 682 unsigned long *bit = NULL;
683
684 field->hidinput = hidinput;
685
dde5845a
JK		 686 if (field->flags & HID_MAIN_ITEM_CONSTANT)
687 goto ignore;
688
cc6b54aa
BT		 689 /* Ignore if report count is out of bounds. */
690 if (field->report_count < 1)
691 goto ignore;
692
82eb1219
JK		 693 /* only LED usages are supported in output fields */
694 if (field->report_type == HID_OUTPUT_REPORT &&
695 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
82eb1219
JK		 696 goto ignore;
697 }
698
048cddfd
BT		 699 /* assign a priority based on the static list declared here */
700 for (i = 0; i < ARRAY_SIZE(hidinput_usages_priorities); i++) {
5c20000a
BT		 701 if (usage->hid == hidinput_usages_priorities[i].usage) {
702 usage_priority = &hidinput_usages_priorities[i];
703
048cddfd
BT		 704 field->usages_priorities[usage_index] =
705 (ARRAY_SIZE(hidinput_usages_priorities) - i) << 8;
706 break;
707 }
708 }
709
5c20000a
BT		 710 /*
711 * For slotted devices, we need to also add the slot index
712 * in the priority.
713 */
714 if (usage_priority && usage_priority->global)
715 field->usages_priorities[usage_index] |=
716 usage_priority->slot_overwrite;
717 else
718 field->usages_priorities[usage_index] |=
719 (0xff - field->slot_idx) << 16;
720
c500c971
JS		 721 if (device->driver->input_mapping) {
722 int ret = device->driver->input_mapping(device, hidinput, field,
723 usage, &bit, &max);
724 if (ret > 0)
725 goto mapped;
726 if (ret < 0)
727 goto ignore;
728 }
729
dde5845a 730 switch (usage->hid & HID_USAGE_PAGE) {
880d29f1
JS		 731 case HID_UP_UNDEFINED:
732 goto ignore;
dde5845a 733
880d29f1
JS		 734 case HID_UP_KEYBOARD:
735 set_bit(EV_REP, input->evbit);
dde5845a 736
880d29f1
JS		 737 if ((usage->hid & HID_USAGE) < 256) {
738 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
739 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
740 } else
741 map_key(KEY_UNKNOWN);
dde5845a 742
880d29f1 743 break;
dde5845a 744
880d29f1 745 case HID_UP_BUTTON:
7f978b9b 746 code = ((usage->hid - 1) & HID_USAGE);
dde5845a 747
880d29f1
JS		 748 switch (field->application) {
749 case HID_GD_MOUSE:
1874542d 750 case HID_GD_POINTER: code += BTN_MOUSE; break;
cf2f765f 751 case HID_GD_JOYSTICK:
fc99f22c
DM		 752 if (code <= 0xf)
753 code += BTN_JOYSTICK;
754 else
f8e86d05
IR		 755 code += BTN_TRIGGER_HAPPY - 0x10;
756 break;
757 case HID_GD_GAMEPAD:
758 if (code <= 0xf)
759 code += BTN_GAMEPAD;
760 else
761 code += BTN_TRIGGER_HAPPY - 0x10;
fc99f22c 762 break;
bcfa8d14
TW		 763 case HID_CP_CONSUMER_CONTROL:
764 if (hidinput_field_in_collection(device, field,
765 HID_COLLECTION_NAMED_ARRAY,
766 HID_CP_PROGRAMMABLEBUTTONS)) {
767 if (code <= 0x1d)
768 code += KEY_MACRO1;
769 else
770 code += BTN_TRIGGER_HAPPY - 0x1e;
7fc48fd6 771 break;
bcfa8d14 772 }
7fc48fd6 773 fallthrough;
880d29f1
JS		 774 default:
775 switch (field->physical) {
776 case HID_GD_MOUSE:
1874542d
FF		 777 case HID_GD_POINTER: code += BTN_MOUSE; break;
778 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
779 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break;
780 default: code += BTN_MISC;
dde5845a 781 }
880d29f1 782 }
dde5845a 783
880d29f1
JS		 784 map_key(code);
785 break;
786
787 case HID_UP_SIMULATION:
788 switch (usage->hid & 0xffff) {
789 case 0xba: map_abs(ABS_RUDDER); break;
790 case 0xbb: map_abs(ABS_THROTTLE); break;
791 case 0xc4: map_abs(ABS_GAS); break;
792 case 0xc5: map_abs(ABS_BRAKE); break;
793 case 0xc8: map_abs(ABS_WHEEL); break;
794 default: goto ignore;
795 }
796 break;
797
798 case HID_UP_GENDESK:
799 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
800 switch (usage->hid & 0xf) {
801 case 0x1: map_key_clear(KEY_POWER); break;
802 case 0x2: map_key_clear(KEY_SLEEP); break;
803 case 0x3: map_key_clear(KEY_WAKEUP); break;
437f3b19
JW		 804 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
805 case 0x5: map_key_clear(KEY_MENU); break;
806 case 0x6: map_key_clear(KEY_PROG1); break;
807 case 0x7: map_key_clear(KEY_HELP); break;
808 case 0x8: map_key_clear(KEY_EXIT); break;
809 case 0x9: map_key_clear(KEY_SELECT); break;
810 case 0xa: map_key_clear(KEY_RIGHT); break;
811 case 0xb: map_key_clear(KEY_LEFT); break;
812 case 0xc: map_key_clear(KEY_UP); break;
813 case 0xd: map_key_clear(KEY_DOWN); break;
814 case 0xe: map_key_clear(KEY_POWER2); break;
815 case 0xf: map_key_clear(KEY_RESTART); break;
880d29f1 816 default: goto unknown;
dde5845a
JK		 817 }
818 break;
880d29f1 819 }
dde5845a 820
2d60f9f4
JL		 821 if ((usage->hid & 0xf0) == 0xa0) { /* SystemControl */
822 switch (usage->hid & 0xf) {
823 case 0x9: map_key_clear(KEY_MICMUTE); break;
824 default: goto ignore;
825 }
826 break;
827 }
828
c01908a1
DT		 829 if ((usage->hid & 0xf0) == 0xb0) { /* SC - Display */
830 switch (usage->hid & 0xf) {
831 case 0x05: map_key_clear(KEY_SWITCHVIDEOMODE); break;
832 default: goto ignore;
833 }
834 break;
835 }
836
1989dada
BT		 837 /*
838 * Some lazy vendors declare 255 usages for System Control,
839 * leading to the creation of ABS_X|Y axis and too many others.
840 * It wouldn't be a problem if joydev doesn't consider the
841 * device as a joystick then.
842 */
843 if (field->application == HID_GD_SYSTEM_CONTROL)
844 goto ignore;
845
880d29f1 846 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */
dde5845a 847 switch (usage->hid) {
880d29f1
JS		 848 case HID_GD_UP: usage->hat_dir = 1; break;
849 case HID_GD_DOWN: usage->hat_dir = 5; break;
850 case HID_GD_RIGHT: usage->hat_dir = 3; break;
851 case HID_GD_LEFT: usage->hat_dir = 7; break;
852 default: goto unknown;
dde5845a 853 }
880d29f1
JS		 854 if (field->dpad) {
855 map_abs(field->dpad);
856 goto ignore;
d4ae650a 857 }
880d29f1 858 map_abs(ABS_HAT0X);
dde5845a 859 break;
880d29f1 860 }
dde5845a 861
880d29f1
JS		 862 switch (usage->hid) {
863 /* These usage IDs map directly to the usage codes. */
864 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
865 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
79346d62
BT		 866 if (field->flags & HID_MAIN_ITEM_RELATIVE)
867 map_rel(usage->hid & 0xf);
868 else
869 map_abs_clear(usage->hid & 0xf);
870 break;
871
2dc702c9
PH		 872 case HID_GD_WHEEL:
873 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
874 set_bit(REL_WHEEL, input->relbit);
875 map_rel(REL_WHEEL_HI_RES);
876 } else {
877 map_abs(usage->hid & 0xf);
878 }
879 break;
880 case HID_GD_SLIDER: case HID_GD_DIAL:
880d29f1
JS		 881 if (field->flags & HID_MAIN_ITEM_RELATIVE)
882 map_rel(usage->hid & 0xf);
883 else
884 map_abs(usage->hid & 0xf);
885 break;
dde5845a 886
880d29f1
JS		 887 case HID_GD_HATSWITCH:
888 usage->hat_min = field->logical_minimum;
889 usage->hat_max = field->logical_maximum;
890 map_abs(ABS_HAT0X);
891 break;
dde5845a 892
880d29f1
JS		 893 case HID_GD_START: map_key_clear(BTN_START); break;
894 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
dde5845a 895
61df56be
HG		 896 case HID_GD_RFKILL_BTN:
897 /* MS wireless radio ctl extension, also check CA */
6e7edabf 898 if (field->application == HID_GD_WIRELESS_RADIO_CTLS) {
61df56be
HG		 899 map_key_clear(KEY_RFKILL);
900 /* We need to simulate the btn release */
901 field->flags |= HID_MAIN_ITEM_RELATIVE;
902 break;
903 }
6b554275 904 goto unknown;
61df56be 905
880d29f1
JS		 906 default: goto unknown;
907 }
dde5845a 908
880d29f1
JS		 909 break;
910
911 case HID_UP_LED:
912 switch (usage->hid & 0xffff) { /* HID-Value: */
913 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */
914 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */
915 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */
916 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */
917 case 0x05: map_led (LED_KANA); break; /* "Kana" */
918 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */
919 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */
920 case 0x09: map_led (LED_MUTE); break; /* "Mute" */
921 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */
922 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */
923 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */
924
925 default: goto ignore;
926 }
927 break;
928
929 case HID_UP_DIGITIZER:
8473a93d
TT		 930 if ((field->application & 0xff) == 0x01) /* Digitizer */
931 __set_bit(INPUT_PROP_POINTER, input->propbit);
932 else if ((field->application & 0xff) == 0x02) /* Pen */
933 __set_bit(INPUT_PROP_DIRECT, input->propbit);
934
880d29f1 935 switch (usage->hid & 0xff) {
8c8b01c3
FB		 936 case 0x00: /* Undefined */
937 goto ignore;
938
880d29f1
JS		 939 case 0x30: /* TipPressure */
940 if (!test_bit(BTN_TOUCH, input->keybit)) {
941 device->quirks |= HID_QUIRK_NOTOUCH;
942 set_bit(EV_KEY, input->evbit);
943 set_bit(BTN_TOUCH, input->keybit);
dde5845a 944 }
880d29f1 945 map_abs_clear(ABS_PRESSURE);
dde5845a
JK		 946 break;
947
880d29f1 948 case 0x32: /* InRange */
3c2b0dbd
BT		 949 switch (field->physical) {
950 case HID_DG_PUCK:
951 map_key(BTN_TOOL_MOUSE);
952 break;
953 case HID_DG_FINGER:
954 map_key(BTN_TOOL_FINGER);
955 break;
956 default:
957 /*
958 * If the physical is not given,
959 * rely on the application.
960 */
961 if (!field->physical) {
962 switch (field->application) {
963 case HID_DG_TOUCHSCREEN:
964 case HID_DG_TOUCHPAD:
965 map_key_clear(BTN_TOOL_FINGER);
966 break;
967 default:
968 map_key_clear(BTN_TOOL_PEN);
969 }
970 } else {
971 map_key(BTN_TOOL_PEN);
972 }
973 break;
dde5845a
JK		 974 }
975 break;
976
581c4484 977 case 0x3b: /* Battery Strength */
9de07a4e 978 hidinput_setup_battery(device, HID_INPUT_REPORT, field, false);
581c4484 979 usage->type = EV_PWR;
505f394f 980 return;
581c4484 981
880d29f1
JS		 982 case 0x3c: /* Invert */
983 map_key_clear(BTN_TOOL_RUBBER);
dde5845a
JK		 984 break;
985
b73b2da0
NK		 986 case 0x3d: /* X Tilt */
987 map_abs_clear(ABS_TILT_X);
988 break;
989
990 case 0x3e: /* Y Tilt */
991 map_abs_clear(ABS_TILT_Y);
992 break;
993
880d29f1
JS		 994 case 0x33: /* Touch */
995 case 0x42: /* TipSwitch */
996 case 0x43: /* TipSwitch2 */
997 device->quirks &= ~HID_QUIRK_NOTOUCH;
998 map_key_clear(BTN_TOUCH);
999 break;
dde5845a 1000
880d29f1
JS		 1001 case 0x44: /* BarrelSwitch */
1002 map_key_clear(BTN_STYLUS);
1003 break;
dde5845a 1004
654c192a
PC		 1005 case 0x45: /* ERASER */
1006 /*
1007 * This event is reported when eraser tip touches the surface.
1008 * Actual eraser (BTN_TOOL_RUBBER) is set by Invert usage when
1009 * tool gets in proximity.
1010 */
1011 map_key_clear(BTN_TOUCH);
1012 break;
1013
50b63697 1014 case 0x46: /* TabletPick */
368c9664 1015 case 0x5a: /* SecondaryBarrelSwitch */
50b63697
NK		 1016 map_key_clear(BTN_STYLUS2);
1017 break;
1018
368c9664 1019 case 0x5b: /* TransducerSerialNumber */
f3e82521 1020 case 0x6e: /* TransducerSerialNumber2 */
8aa45b54 1021 map_msc(MSC_SERIAL);
368c9664
PC		 1022 break;
1023
880d29f1
JS		 1024 default: goto unknown;
1025 }
1026 break;
1027
f3dddf24
DT		 1028 case HID_UP_TELEPHONY:
1029 switch (usage->hid & HID_USAGE) {
1030 case 0x2f: map_key_clear(KEY_MICMUTE); break;
1031 case 0xb0: map_key_clear(KEY_NUMERIC_0); break;
1032 case 0xb1: map_key_clear(KEY_NUMERIC_1); break;
1033 case 0xb2: map_key_clear(KEY_NUMERIC_2); break;
1034 case 0xb3: map_key_clear(KEY_NUMERIC_3); break;
1035 case 0xb4: map_key_clear(KEY_NUMERIC_4); break;
1036 case 0xb5: map_key_clear(KEY_NUMERIC_5); break;
1037 case 0xb6: map_key_clear(KEY_NUMERIC_6); break;
1038 case 0xb7: map_key_clear(KEY_NUMERIC_7); break;
1039 case 0xb8: map_key_clear(KEY_NUMERIC_8); break;
1040 case 0xb9: map_key_clear(KEY_NUMERIC_9); break;
1041 case 0xba: map_key_clear(KEY_NUMERIC_STAR); break;
1042 case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break;
1043 case 0xbc: map_key_clear(KEY_NUMERIC_A); break;
1044 case 0xbd: map_key_clear(KEY_NUMERIC_B); break;
1045 case 0xbe: map_key_clear(KEY_NUMERIC_C); break;
1046 case 0xbf: map_key_clear(KEY_NUMERIC_D); break;
1047 default: goto ignore;
1048 }
1049 break;
1050
437f3b19 1051 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */
880d29f1
JS		 1052 switch (usage->hid & HID_USAGE) {
1053 case 0x000: goto ignore;
437f3b19
JW		 1054 case 0x030: map_key_clear(KEY_POWER); break;
1055 case 0x031: map_key_clear(KEY_RESTART); break;
1056 case 0x032: map_key_clear(KEY_SLEEP); break;
880d29f1 1057 case 0x034: map_key_clear(KEY_SLEEP); break;
437f3b19 1058 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break;
880d29f1
JS		 1059 case 0x036: map_key_clear(BTN_MISC); break;
1060
437f3b19
JW		 1061 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */
1062 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */
1063 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */
1064 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */
1065 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */
1066 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */
1067 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */
1068 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */
1069 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */
1070
1071 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */
1072 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */
1073 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */
1074 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */
1075 case 0x069: map_key_clear(KEY_RED); break;
1076 case 0x06a: map_key_clear(KEY_GREEN); break;
1077 case 0x06b: map_key_clear(KEY_BLUE); break;
1078 case 0x06c: map_key_clear(KEY_YELLOW); break;
f7b3d85a 1079 case 0x06d: map_key_clear(KEY_ASPECT_RATIO); break;
437f3b19 1080
f362e690
OG		 1081 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break;
1082 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break;
1083 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break;
1084 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break;
1085 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break;
1086 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break;
1087
7975a1d6
DT		 1088 case 0x079: map_key_clear(KEY_KBDILLUMUP); break;
1089 case 0x07a: map_key_clear(KEY_KBDILLUMDOWN); break;
1090 case 0x07c: map_key_clear(KEY_KBDILLUMTOGGLE); break;
1091
437f3b19 1092 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break;
880d29f1 1093 case 0x083: map_key_clear(KEY_LAST); break;
437f3b19 1094 case 0x084: map_key_clear(KEY_ENTER); break;
880d29f1
JS		 1095 case 0x088: map_key_clear(KEY_PC); break;
1096 case 0x089: map_key_clear(KEY_TV); break;
1097 case 0x08a: map_key_clear(KEY_WWW); break;
1098 case 0x08b: map_key_clear(KEY_DVD); break;
1099 case 0x08c: map_key_clear(KEY_PHONE); break;
1100 case 0x08d: map_key_clear(KEY_PROGRAM); break;
1101 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break;
1102 case 0x08f: map_key_clear(KEY_GAMES); break;
1103 case 0x090: map_key_clear(KEY_MEMO); break;
1104 case 0x091: map_key_clear(KEY_CD); break;
1105 case 0x092: map_key_clear(KEY_VCR); break;
1106 case 0x093: map_key_clear(KEY_TUNER); break;
1107 case 0x094: map_key_clear(KEY_EXIT); break;
1108 case 0x095: map_key_clear(KEY_HELP); break;
1109 case 0x096: map_key_clear(KEY_TAPE); break;
1110 case 0x097: map_key_clear(KEY_TV2); break;
1111 case 0x098: map_key_clear(KEY_SAT); break;
1112 case 0x09a: map_key_clear(KEY_PVR); break;
1113
1114 case 0x09c: map_key_clear(KEY_CHANNELUP); break;
1115 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
1116 case 0x0a0: map_key_clear(KEY_VCR2); break;
1117
1118 case 0x0b0: map_key_clear(KEY_PLAY); break;
1119 case 0x0b1: map_key_clear(KEY_PAUSE); break;
1120 case 0x0b2: map_key_clear(KEY_RECORD); break;
1121 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
1122 case 0x0b4: map_key_clear(KEY_REWIND); break;
1123 case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
1124 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
1125 case 0x0b7: map_key_clear(KEY_STOPCD); break;
1126 case 0x0b8: map_key_clear(KEY_EJECTCD); break;
1127 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break;
437f3b19
JW		 1128 case 0x0b9: map_key_clear(KEY_SHUFFLE); break;
1129 case 0x0bf: map_key_clear(KEY_SLOW); break;
880d29f1
JS		 1130
1131 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
f362e690 1132 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break;
7b229b13 1133
9f4211bf
EO		 1134 case 0x0d5: map_key_clear(KEY_CAMERA_ACCESS_ENABLE); break;
1135 case 0x0d6: map_key_clear(KEY_CAMERA_ACCESS_DISABLE); break;
1136 case 0x0d7: map_key_clear(KEY_CAMERA_ACCESS_TOGGLE); break;
bfa26ba3 1137 case 0x0d8: map_key_clear(KEY_DICTATE); break;
7b229b13
DT		 1138 case 0x0d9: map_key_clear(KEY_EMOJI_PICKER); break;
1139
880d29f1
JS		 1140 case 0x0e0: map_abs_clear(ABS_VOLUME); break;
1141 case 0x0e2: map_key_clear(KEY_MUTE); break;
1142 case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
1143 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
1144 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
437f3b19 1145 case 0x0f5: map_key_clear(KEY_SLOW); break;
880d29f1 1146
f362e690 1147 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break;
880d29f1
JS		 1148 case 0x182: map_key_clear(KEY_BOOKMARKS); break;
1149 case 0x183: map_key_clear(KEY_CONFIG); break;
1150 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break;
1151 case 0x185: map_key_clear(KEY_EDITOR); break;
1152 case 0x186: map_key_clear(KEY_SPREADSHEET); break;
1153 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break;
1154 case 0x188: map_key_clear(KEY_PRESENTATION); break;
1155 case 0x189: map_key_clear(KEY_DATABASE); break;
1156 case 0x18a: map_key_clear(KEY_MAIL); break;
1157 case 0x18b: map_key_clear(KEY_NEWS); break;
1158 case 0x18c: map_key_clear(KEY_VOICEMAIL); break;
1159 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break;
1160 case 0x18e: map_key_clear(KEY_CALENDAR); break;
f362e690
OG		 1161 case 0x18f: map_key_clear(KEY_TASKMANAGER); break;
1162 case 0x190: map_key_clear(KEY_JOURNAL); break;
880d29f1
JS		 1163 case 0x191: map_key_clear(KEY_FINANCE); break;
1164 case 0x192: map_key_clear(KEY_CALC); break;
437f3b19 1165 case 0x193: map_key_clear(KEY_PLAYER); break;
880d29f1
JS		 1166 case 0x194: map_key_clear(KEY_FILE); break;
1167 case 0x196: map_key_clear(KEY_WWW); break;
0690535d 1168 case 0x199: map_key_clear(KEY_CHAT); break;
880d29f1
JS		 1169 case 0x19c: map_key_clear(KEY_LOGOFF); break;
1170 case 0x19e: map_key_clear(KEY_COFFEE); break;
f362e690
OG		 1171 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break;
1172 case 0x1a2: map_key_clear(KEY_APPSELECT); break;
5820e4d4
HG		 1173 case 0x1a3: map_key_clear(KEY_NEXT); break;
1174 case 0x1a4: map_key_clear(KEY_PREVIOUS); break;
880d29f1
JS		 1175 case 0x1a6: map_key_clear(KEY_HELP); break;
1176 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
1177 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break;
437f3b19 1178 case 0x1ae: map_key_clear(KEY_KEYBOARD); break;
f362e690 1179 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break;
5820e4d4 1180 case 0x1b4: map_key_clear(KEY_FILE); break;
437f3b19
JW		 1181 case 0x1b6: map_key_clear(KEY_IMAGES); break;
1182 case 0x1b7: map_key_clear(KEY_AUDIO); break;
1183 case 0x1b8: map_key_clear(KEY_VIDEO); break;
880d29f1
JS		 1184 case 0x1bc: map_key_clear(KEY_MESSENGER); break;
1185 case 0x1bd: map_key_clear(KEY_INFO); break;
ce856634 1186 case 0x1cb: map_key_clear(KEY_ASSISTANT); break;
880d29f1
JS		 1187 case 0x201: map_key_clear(KEY_NEW); break;
1188 case 0x202: map_key_clear(KEY_OPEN); break;
1189 case 0x203: map_key_clear(KEY_CLOSE); break;
1190 case 0x204: map_key_clear(KEY_EXIT); break;
1191 case 0x207: map_key_clear(KEY_SAVE); break;
1192 case 0x208: map_key_clear(KEY_PRINT); break;
1193 case 0x209: map_key_clear(KEY_PROPS); break;
1194 case 0x21a: map_key_clear(KEY_UNDO); break;
1195 case 0x21b: map_key_clear(KEY_COPY); break;
1196 case 0x21c: map_key_clear(KEY_CUT); break;
1197 case 0x21d: map_key_clear(KEY_PASTE); break;
1198 case 0x21f: map_key_clear(KEY_FIND); break;
1199 case 0x221: map_key_clear(KEY_SEARCH); break;
1200 case 0x222: map_key_clear(KEY_GOTO); break;
1201 case 0x223: map_key_clear(KEY_HOMEPAGE); break;
1202 case 0x224: map_key_clear(KEY_BACK); break;
1203 case 0x225: map_key_clear(KEY_FORWARD); break;
1204 case 0x226: map_key_clear(KEY_STOP); break;
1205 case 0x227: map_key_clear(KEY_REFRESH); break;
1206 case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
1207 case 0x22d: map_key_clear(KEY_ZOOMIN); break;
1208 case 0x22e: map_key_clear(KEY_ZOOMOUT); break;
1209 case 0x22f: map_key_clear(KEY_ZOOMRESET); break;
afbbaa1b 1210 case 0x232: map_key_clear(KEY_FULL_SCREEN); break;
880d29f1
JS		 1211 case 0x233: map_key_clear(KEY_SCROLLUP); break;
1212 case 0x234: map_key_clear(KEY_SCROLLDOWN); break;
2dc702c9
PH		 1213 case 0x238: /* AC Pan */
1214 set_bit(REL_HWHEEL, input->relbit);
1215 map_rel(REL_HWHEEL_HI_RES);
1216 break;
437f3b19 1217 case 0x23d: map_key_clear(KEY_EDIT); break;
880d29f1 1218 case 0x25f: map_key_clear(KEY_CANCEL); break;
437f3b19
JW		 1219 case 0x269: map_key_clear(KEY_INSERT); break;
1220 case 0x26a: map_key_clear(KEY_DELETE); break;
880d29f1
JS		 1221 case 0x279: map_key_clear(KEY_REDO); break;
1222
1223 case 0x289: map_key_clear(KEY_REPLY); break;
1224 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
1225 case 0x28c: map_key_clear(KEY_SEND); break;
1226
bd21d847
DT		 1227 case 0x29d: map_key_clear(KEY_KBD_LAYOUT_NEXT); break;
1228
327b89f0
WM		 1229 case 0x2a2: map_key_clear(KEY_ALL_APPLICATIONS); break;
1230
f974008f
OG		 1231 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break;
1232 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break;
1233 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break;
1234 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break;
1235 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break;
1236 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break;
1237
96dd8687
DT		 1238 case 0x29f: map_key_clear(KEY_SCALE); break;
1239
afdb5cce 1240 default: map_key_clear(KEY_UNKNOWN);
880d29f1
JS		 1241 }
1242 break;
1243
4f5ca836 1244 case HID_UP_GENDEVCTRLS:
581c4484
DT		 1245 switch (usage->hid) {
1246 case HID_DC_BATTERYSTRENGTH:
9de07a4e
JC		 1247 hidinput_setup_battery(device, HID_INPUT_REPORT, field, false);
1248 usage->type = EV_PWR;
1249 return;
1250 }
1251 goto unknown;
1252
1253 case HID_UP_BATTERY:
1254 switch (usage->hid) {
1255 case HID_BAT_ABSOLUTESTATEOFCHARGE:
1256 hidinput_setup_battery(device, HID_INPUT_REPORT, field, true);
581c4484 1257 usage->type = EV_PWR;
505f394f 1258 return;
a608dc1c
JE		 1259 case HID_BAT_CHARGING:
1260 usage->type = EV_PWR;
1261 return;
581c4484
DT		 1262 }
1263 goto unknown;
4f5ca836 1264
880d29f1
JS		 1265 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
1266 set_bit(EV_REP, input->evbit);
1267 switch (usage->hid & HID_USAGE) {
1268 case 0x021: map_key_clear(KEY_PRINT); break;
1269 case 0x070: map_key_clear(KEY_HP); break;
1270 case 0x071: map_key_clear(KEY_CAMERA); break;
1271 case 0x072: map_key_clear(KEY_SOUND); break;
1272 case 0x073: map_key_clear(KEY_QUESTION); break;
1273 case 0x080: map_key_clear(KEY_EMAIL); break;
1274 case 0x081: map_key_clear(KEY_CHAT); break;
1275 case 0x082: map_key_clear(KEY_SEARCH); break;
1276 case 0x083: map_key_clear(KEY_CONNECT); break;
1277 case 0x084: map_key_clear(KEY_FINANCE); break;
1278 case 0x085: map_key_clear(KEY_SPORT); break;
1279 case 0x086: map_key_clear(KEY_SHOP); break;
929578ab
KYL		 1280 default: goto ignore;
1281 }
1282 break;
1283
1284 case HID_UP_HPVENDOR2:
1285 set_bit(EV_REP, input->evbit);
1286 switch (usage->hid & HID_USAGE) {
08fc9473 1287 case 0x001: map_key_clear(KEY_MICMUTE); break;
929578ab
KYL		 1288 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break;
1289 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break;
880d29f1
JS		 1290 default: goto ignore;
1291 }
1292 break;
dde5845a 1293
880d29f1
JS		 1294 case HID_UP_MSVENDOR:
1295 goto ignore;
dde5845a 1296
880d29f1
JS		 1297 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
1298 set_bit(EV_REP, input->evbit);
1299 goto ignore;
dde5845a 1300
880d29f1 1301 case HID_UP_LOGIVENDOR:
b466c1dd
SW		 1302 /* intentional fallback */
1303 case HID_UP_LOGIVENDOR2:
1304 /* intentional fallback */
1305 case HID_UP_LOGIVENDOR3:
880d29f1 1306 goto ignore;
fc99f22c 1307
880d29f1
JS		 1308 case HID_UP_PID:
1309 switch (usage->hid & HID_USAGE) {
1310 case 0xa4: map_key_clear(BTN_DEAD); break;
1311 default: goto ignore;
1312 }
1313 break;
dde5845a 1314
880d29f1
JS		 1315 default:
1316 unknown:
1317 if (field->report_size == 1) {
1318 if (field->report->type == HID_OUTPUT_REPORT) {
1319 map_led(LED_MISC);
dde5845a
JK		 1320 break;
1321 }
880d29f1 1322 map_key(BTN_MISC);
dde5845a 1323 break;
880d29f1
JS		 1324 }
1325 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
1326 map_rel(REL_MISC);
1327 break;
1328 }
1329 map_abs(ABS_MISC);
1330 break;
dde5845a
JK		 1331 }
1332
10bd065f 1333mapped:
35556bed
MZ		 1334 /* Mapping failed, bail out */
1335 if (!bit)
1336 return;
1337
4f388217
DT		 1338 if (device->driver->input_mapped &&
1339 device->driver->input_mapped(device, hidinput, field, usage,
1340 &bit, &max) < 0) {
1341 /*
1342 * The driver indicated that no further generic handling
1343 * of the usage is desired.
1344 */
1345 return;
1346 }
c500c971 1347
dde5845a
JK		 1348 set_bit(usage->type, input->evbit);
1349
190d7f02
BT		 1350 /*
1351 * This part is *really* controversial:
1352 * - HID aims at being generic so we should do our best to export
1353 * all incoming events
1354 * - HID describes what events are, so there is no reason for ABS_X
1355 * to be mapped to ABS_Y
1356 * - HID is using *_MISC+N as a default value, but nothing prevents
1357 * *_MISC+N to overwrite a legitimate even, which confuses userspace
1358 * (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different
1359 * processing)
1360 *
1361 * If devices still want to use this (at their own risk), they will
1362 * have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but
1363 * the default should be a reliable mapping.
1364 */
1365 while (usage->code <= max && test_and_set_bit(usage->code, bit)) {
1366 if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) {
1367 usage->code = find_next_zero_bit(bit,
1368 max + 1,
1369 usage->code);
1370 } else {
1371 device->status |= HID_STAT_DUP_DETECTED;
1372 goto ignore;
1373 }
1374 }
dde5845a
JK		 1375
1376 if (usage->code > max)
1377 goto ignore;
1378
dde5845a
JK		 1379 if (usage->type == EV_ABS) {
1380
1381 int a = field->logical_minimum;
1382 int b = field->logical_maximum;
1383
1384 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
1385 a = field->logical_minimum = 0;
1386 b = field->logical_maximum = 255;
1387 }
1388
1389 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
1390 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
1391 else input_set_abs_params(input, usage->code, a, b, 0, 0);
1392
4ea6e4ff
NK		 1393 input_abs_set_res(input, usage->code,
1394 hidinput_calc_abs_res(field, usage->code));
1395
6967b4d9
HR		 1396 /* use a larger default input buffer for MT devices */
1397 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
1398 input_set_events_per_packet(input, 60);
dde5845a
JK		 1399 }
1400
1401 if (usage->type == EV_ABS &&
1402 (usage->hat_min < usage->hat_max || usage->hat_dir)) {
1403 int i;
1404 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
1405 input_set_abs_params(input, i, -1, 1, 0, 0);
1406 set_bit(i, input->absbit);
1407 }
1408 if (usage->hat_dir && !field->dpad)
1409 field->dpad = usage->code;
1410 }
1411
2c1d8aea
JK		 1412 /* for those devices which produce Consumer volume usage as relative,
1413 * we emulate pressing volumeup/volumedown appropriate number of times
1414 * in hidinput_hid_event()
1415 */
1416 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1417 (usage->code == ABS_VOLUME)) {
1418 set_bit(KEY_VOLUMEUP, input->keybit);
1419 set_bit(KEY_VOLUMEDOWN, input->keybit);
1420 }
1421
c01d50d1
JK		 1422 if (usage->type == EV_KEY) {
1423 set_bit(EV_MSC, input->evbit);
1424 set_bit(MSC_SCAN, input->mscbit);
1425 }
1426
dde5845a 1427 return;
a635f9dd 1428
4f388217
DT		 1429ignore:
1430 usage->type = 0;
1431 usage->code = 0;
dde5845a
JK		 1432}
1433
2dc702c9
PH		 1434static void hidinput_handle_scroll(struct hid_usage *usage,
1435 struct input_dev *input,
1436 __s32 value)
1437{
1438 int code;
1439 int hi_res, lo_res;
1440
1441 if (value == 0)
1442 return;
1443
1444 if (usage->code == REL_WHEEL_HI_RES)
1445 code = REL_WHEEL;
1446 else
1447 code = REL_HWHEEL;
1448
1449 /*
1450 * Windows reports one wheel click as value 120. Where a high-res
1451 * scroll wheel is present, a fraction of 120 is reported instead.
1452 * Our REL_WHEEL_HI_RES axis does the same because all HW must
1453 * adhere to the 120 expectation.
1454 */
1455 hi_res = value * 120/usage->resolution_multiplier;
1456
1457 usage->wheel_accumulated += hi_res;
1458 lo_res = usage->wheel_accumulated/120;
1459 if (lo_res)
1460 usage->wheel_accumulated -= lo_res * 120;
1461
1462 input_event(input, EV_REL, code, lo_res);
1463 input_event(input, EV_REL, usage->code, hi_res);
1464}
1465
87562fcd
BT		 1466static void hid_report_release_tool(struct hid_report *report, struct input_dev *input,
1467 unsigned int tool)
1468{
1469 /* if the given tool is not currently reported, ignore */
1470 if (!test_bit(tool, input->key))
1471 return;
1472
1473 /*
1474 * if the given tool was previously set, release it,
1475 * release any TOUCH and send an EV_SYN
1476 */
1477 input_event(input, EV_KEY, BTN_TOUCH, 0);
1478 input_event(input, EV_KEY, tool, 0);
1479 input_event(input, EV_SYN, SYN_REPORT, 0);
1480
1481 report->tool = 0;
1482}
1483
1484static void hid_report_set_tool(struct hid_report *report, struct input_dev *input,
1485 unsigned int new_tool)
1486{
1487 if (report->tool != new_tool)
1488 hid_report_release_tool(report, input, report->tool);
1489
1490 input_event(input, EV_KEY, new_tool, 1);
1491 report->tool = new_tool;
1492}
1493
dde5845a
JK		 1494void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
1495{
1496 struct input_dev *input;
87562fcd 1497 struct hid_report *report = field->report;
b4482a4b 1498 unsigned *quirks = &hid->quirks;
dde5845a 1499
581c4484 1500 if (!usage->type)
dde5845a
JK		 1501 return;
1502
581c4484 1503 if (usage->type == EV_PWR) {
a608dc1c
JE		 1504 bool handled = hidinput_set_battery_charge_status(hid, usage->hid, value);
1505
1506 if (!handled)
1507 hidinput_update_battery(hid, value);
1508
581c4484
DT		 1509 return;
1510 }
dde5845a 1511
581c4484 1512 if (!field->hidinput)
dde5845a
JK		 1513 return;
1514
581c4484
DT		 1515 input = field->hidinput->input;
1516
dde5845a
JK		 1517 if (usage->hat_min < usage->hat_max || usage->hat_dir) {
1518 int hat_dir = usage->hat_dir;
1519 if (!hat_dir)
1520 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
1521 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
1522 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);
fc99f22c
DM		 1523 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
1524 return;
1525 }
dde5845a 1526
883e0e36
NK		 1527 /*
1528 * Ignore out-of-range values as per HID specification,
c3883fe0
TK		 1529 * section 5.10 and 6.2.25, when NULL state bit is present.
1530 * When it's not, clamp the value to match Microsoft's input
1531 * driver as mentioned in "Required HID usages for digitizers":
1532 * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp
a688393b
JK		 1533 *
1534 * The logical_minimum < logical_maximum check is done so that we
1535 * don't unintentionally discard values sent by devices which
1536 * don't specify logical min and max.
883e0e36
NK		 1537 */
1538 if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
187ccd6c 1539 field->logical_minimum < field->logical_maximum) {
c3883fe0
TK		 1540 if (field->flags & HID_MAIN_ITEM_NULL_STATE &&
1541 (value < field->logical_minimum ||
1542 value > field->logical_maximum)) {
1543 dbg_hid("Ignoring out-of-range value %x\n", value);
1544 return;
1545 }
1546 value = clamp(value,
1547 field->logical_minimum,
1548 field->logical_maximum);
6da70669
JK		 1549 }
1550
f2d4ddfa 1551 switch (usage->hid) {
87562fcd
BT		 1552 case HID_DG_ERASER:
1553 report->tool_active |= !!value;
1554
1555 /*
1556 * if eraser is set, we must enforce BTN_TOOL_RUBBER
1557 * to accommodate for devices not following the spec.
1558 */
1559 if (value)
1560 hid_report_set_tool(report, input, BTN_TOOL_RUBBER);
1561 else if (report->tool != BTN_TOOL_RUBBER)
1562 /* value is off, tool is not rubber, ignore */
1563 return;
1564
1565 /* let hid-input set BTN_TOUCH */
1566 break;
1567
f2d4ddfa 1568 case HID_DG_INVERT:
87562fcd
BT		 1569 report->tool_active |= !!value;
1570
1571 /*
1572 * If invert is set, we store BTN_TOOL_RUBBER.
1573 */
1574 if (value)
1575 hid_report_set_tool(report, input, BTN_TOOL_RUBBER);
1576 else if (!report->tool_active)
1577 /* tool_active not set means Invert and Eraser are not set */
1578 hid_report_release_tool(report, input, BTN_TOOL_RUBBER);
1579
1580 /* no further processing */
dde5845a 1581 return;
dde5845a 1582
f2d4ddfa 1583 case HID_DG_INRANGE:
87562fcd
BT		 1584 report->tool_active |= !!value;
1585
1586 if (report->tool_active) {
1587 /*
1588 * if tool is not set but is marked as active,
1589 * assume ours
1590 */
1591 if (!report->tool)
8db8be9c
BT		 1592 report->tool = usage->code;
1593
1594 /* drivers may have changed the value behind our back, resend it */
1595 hid_report_set_tool(report, input, report->tool);
87562fcd
BT		 1596 } else {
1597 hid_report_release_tool(report, input, usage->code);
dde5845a 1598 }
87562fcd
BT		 1599
1600 /* reset tool_active for the next event */
1601 report->tool_active = false;
1602
1603 /* no further processing */
dde5845a 1604 return;
dde5845a 1605
87562fcd
BT		 1606 case HID_DG_TIPSWITCH:
1607 report->tool_active |= !!value;
1608
1609 /* if tool is set to RUBBER we should ignore the current value */
1610 if (report->tool == BTN_TOOL_RUBBER)
1611 return;
1612
1613 break;
1614
f2d4ddfa
BT		 1615 case HID_DG_TIPPRESSURE:
1616 if (*quirks & HID_QUIRK_NOTOUCH) {
1617 int a = field->logical_minimum;
1618 int b = field->logical_maximum;
1619
87562fcd
BT		 1620 if (value > a + ((b - a) >> 3)) {
1621 input_event(input, EV_KEY, BTN_TOUCH, 1);
1622 report->tool_active = true;
1623 }
f2d4ddfa
BT		 1624 }
1625 break;
dde5845a 1626
f2d4ddfa 1627 case HID_UP_PID | 0x83UL: /* Simultaneous Effects Max */
58037eb9 1628 dbg_hid("Maximum Effects - %d\n",value);
dde5845a 1629 return;
dde5845a 1630
f2d4ddfa 1631 case HID_UP_PID | 0x7fUL:
58037eb9 1632 dbg_hid("PID Pool Report\n");
dde5845a
JK		 1633 return;
1634 }
1635
f2d4ddfa
BT		 1636 switch (usage->type) {
1637 case EV_KEY:
1638 if (usage->code == 0) /* Key 0 is "unassigned", not KEY_UNKNOWN */
1639 return;
1640 break;
dde5845a 1641
f2d4ddfa
BT		 1642 case EV_REL:
1643 if (usage->code == REL_WHEEL_HI_RES ||
1644 usage->code == REL_HWHEEL_HI_RES) {
1645 hidinput_handle_scroll(usage, input, value);
1646 return;
1647 }
1648 break;
2dc702c9 1649
f2d4ddfa
BT		 1650 case EV_ABS:
1651 if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
1652 usage->code == ABS_VOLUME) {
1653 int count = abs(value);
1654 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
1655 int i;
1656
1657 for (i = 0; i < count; i++) {
1658 input_event(input, EV_KEY, direction, 1);
1659 input_sync(input);
1660 input_event(input, EV_KEY, direction, 0);
1661 input_sync(input);
1662 }
1663 return;
2c1d8aea 1664
f2d4ddfa
BT		 1665 } else if (((*quirks & HID_QUIRK_X_INVERT) && usage->code == ABS_X) ||
1666 ((*quirks & HID_QUIRK_Y_INVERT) && usage->code == ABS_Y))
1667 value = field->logical_maximum - value;
1668 break;
2c1d8aea
JK		 1669 }
1670
6ce901eb
DH		 1671 /*
1672 * Ignore reports for absolute data if the data didn't change. This is
1673 * not only an optimization but also fixes 'dead' key reports. Some
1674 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID
1675 * 0x31 and 0x32) report multiple keys, even though a localized keyboard
1676 * can only have one of them physically available. The 'dead' keys
1677 * report constant 0. As all map to the same keycode, they'd confuse
1678 * the input layer. If we filter the 'dead' keys on the HID level, we
1679 * skip the keycode translation and only forward real events.
1680 */
1681 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE |
1682 HID_MAIN_ITEM_BUFFERED_BYTE)) &&
8e7b3410 1683 (field->flags & HID_MAIN_ITEM_VARIABLE) &&
6ce901eb
DH		 1684 usage->usage_index < field->maxusage &&
1685 value == field->value[usage->usage_index])
1686 return;
1687
c01d50d1 1688 /* report the usage code as scancode if the key status has changed */
323ddaa8
JB		 1689 if (usage->type == EV_KEY &&
1690 (!test_bit(usage->code, input->key)) == value)
c01d50d1 1691 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
1fe8736d 1692
dde5845a
JK		 1693 input_event(input, usage->type, usage->code, value);
1694
3eb4351a
DT		 1695 if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
1696 usage->type == EV_KEY && value) {
1697 input_sync(input);
dde5845a 1698 input_event(input, usage->type, usage->code, 0);
3eb4351a 1699 }
dde5845a
JK		 1700}
1701
1702void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1703{
1704 struct hid_input *hidinput;
1705
24750f3e
HR		 1706 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1707 return;
1708
dde5845a
JK		 1709 list_for_each_entry(hidinput, &hid->inputs, list)
1710 input_sync(hidinput->input);
1711}
229695e5 1712EXPORT_SYMBOL_GPL(hidinput_report_event);
dde5845a 1713
5904a3f9
MW		 1714static int hidinput_find_field(struct hid_device *hid, unsigned int type,
1715 unsigned int code, struct hid_field **field)
dde5845a
JK		 1716{
1717 struct hid_report *report;
1718 int i, j;
1719
1720 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1721 for (i = 0; i < report->maxfield; i++) {
1722 *field = report->field[i];
1723 for (j = 0; j < (*field)->maxusage; j++)
1724 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1725 return j;
1726 }
1727 }
1728 return -1;
1729}
1730
4371ea82
DK		 1731struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1732{
1733 struct hid_report *report;
1734 struct hid_field *field;
1735 int i, j;
1736
1737 list_for_each_entry(report,
1738 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1739 list) {
1740 for (i = 0; i < report->maxfield; i++) {
1741 field = report->field[i];
1742 for (j = 0; j < field->maxusage; j++)
1743 if (field->usage[j].type == EV_LED)
1744 return field;
1745 }
1746 }
1747 return NULL;
1748}
1749EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1750
1751unsigned int hidinput_count_leds(struct hid_device *hid)
1752{
1753 struct hid_report *report;
1754 struct hid_field *field;
1755 int i, j;
1756 unsigned int count = 0;
1757
1758 list_for_each_entry(report,
1759 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1760 list) {
1761 for (i = 0; i < report->maxfield; i++) {
1762 field = report->field[i];
1763 for (j = 0; j < field->maxusage; j++)
1764 if (field->usage[j].type == EV_LED &&
1765 field->value[j])
1766 count += 1;
1767 }
1768 }
1769 return count;
1770}
1771EXPORT_SYMBOL_GPL(hidinput_count_leds);
1772
50c9d75b
DH		 1773static void hidinput_led_worker(struct work_struct *work)
1774{
1775 struct hid_device *hid = container_of(work, struct hid_device,
1776 led_work);
1777 struct hid_field *field;
1778 struct hid_report *report;
3064a03b
AM		 1779 int ret;
1780 u32 len;
50c9d75b
DH		 1781 __u8 *buf;
1782
1783 field = hidinput_get_led_field(hid);
1784 if (!field)
1785 return;
1786
1787 /*
1788 * field->report is accessed unlocked regarding HID core. So there might
1789 * be another incoming SET-LED request from user-space, which changes
1790 * the LED state while we assemble our outgoing buffer. However, this
1791 * doesn't matter as hid_output_report() correctly converts it into a
1792 * boolean value no matter what information is currently set on the LED
1793 * field (even garbage). So the remote device will always get a valid
1794 * request.
1795 * And in case we send a wrong value, a next led worker is spawned
1796 * for every SET-LED request so the following worker will send the
1797 * correct value, guaranteed!
1798 */
1799
1800 report = field->report;
1801
1802 /* use custom SET_REPORT request if possible (asynchronous) */
1803 if (hid->ll_driver->request)
1804 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT);
1805
1806 /* fall back to generic raw-output-report */
dabb05c6 1807 len = hid_report_len(report);
9d27f432 1808 buf = hid_alloc_report_buf(report, GFP_KERNEL);
50c9d75b
DH		 1809 if (!buf)
1810 return;
1811
1812 hid_output_report(report, buf);
1813 /* synchronous output report */
2ebaebcf
BT		 1814 ret = hid_hw_output_report(hid, buf, len);
1815 if (ret == -ENOSYS)
1816 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT,
1817 HID_REQ_SET_REPORT);
50c9d75b
DH		 1818 kfree(buf);
1819}
1820
1821static int hidinput_input_event(struct input_dev *dev, unsigned int type,
1822 unsigned int code, int value)
1823{
1824 struct hid_device *hid = input_get_drvdata(dev);
1825 struct hid_field *field;
1826 int offset;
1827
1828 if (type == EV_FF)
1829 return input_ff_event(dev, type, code, value);
1830
1831 if (type != EV_LED)
1832 return -1;
1833
1834 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
1835 hid_warn(dev, "event field not found\n");
1836 return -1;
1837 }
1838
1839 hid_set_field(field, offset, value);
1840
1841 schedule_work(&hid->led_work);
1842 return 0;
1843}
1844
7c379146
JK		 1845static int hidinput_open(struct input_dev *dev)
1846{
e0712985
DT		 1847 struct hid_device *hid = input_get_drvdata(dev);
1848
5bea7660 1849 return hid_hw_open(hid);
7c379146
JK		 1850}
1851
1852static void hidinput_close(struct input_dev *dev)
1853{
e0712985
DT		 1854 struct hid_device *hid = input_get_drvdata(dev);
1855
5bea7660 1856 hid_hw_close(hid);
7c379146
JK		 1857}
1858
d43c17ea
BT		 1859static bool __hidinput_change_resolution_multipliers(struct hid_device *hid,
1860 struct hid_report *report, bool use_logical_max)
2dc702c9 1861{
2dc702c9 1862 struct hid_usage *usage;
d43c17ea 1863 bool update_needed = false;
1ad273d6 1864 bool get_report_completed = false;
2dc702c9
PH		 1865 int i, j;
1866
d43c17ea
BT		 1867 if (report->maxfield == 0)
1868 return false;
2dc702c9 1869
d43c17ea
BT		 1870 for (i = 0; i < report->maxfield; i++) {
1871 __s32 value = use_logical_max ?
1872 report->field[i]->logical_maximum :
1873 report->field[i]->logical_minimum;
1874
1875 /* There is no good reason for a Resolution
1876 * Multiplier to have a count other than 1.
1877 * Ignore that case.
2dc702c9 1878 */
d43c17ea
BT		 1879 if (report->field[i]->report_count != 1)
1880 continue;
2dc702c9 1881
d43c17ea
BT		 1882 for (j = 0; j < report->field[i]->maxusage; j++) {
1883 usage = &report->field[i]->usage[j];
2dc702c9 1884
d43c17ea 1885 if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER)
2dc702c9
PH		 1886 continue;
1887
1ad273d6
PH		 1888 /*
1889 * If we have more than one feature within this
1890 * report we need to fill in the bits from the
1891 * others before we can overwrite the ones for the
1892 * Resolution Multiplier.
1893 *
1894 * But if we're not allowed to read from the device,
1895 * we just bail. Such a device should not exist
1896 * anyway.
1897 */
1898 if (!get_report_completed && report->maxfield > 1) {
1899 if (hid->quirks & HID_QUIRK_NO_INIT_REPORTS)
1900 return update_needed;
1901
1902 hid_hw_request(hid, report, HID_REQ_GET_REPORT);
1903 hid_hw_wait(hid);
1904 get_report_completed = true;
1905 }
1906
39b3c3a5 1907 report->field[i]->value[j] = value;
d43c17ea
BT		 1908 update_needed = true;
1909 }
1910 }
1911
1912 return update_needed;
1913}
2dc702c9 1914
d43c17ea
BT		 1915static void hidinput_change_resolution_multipliers(struct hid_device *hid)
1916{
1917 struct hid_report_enum *rep_enum;
1918 struct hid_report *rep;
1919 int ret;
2dc702c9 1920
d43c17ea
BT		 1921 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1922 list_for_each_entry(rep, &rep_enum->report_list, list) {
1923 bool update_needed = __hidinput_change_resolution_multipliers(hid,
1924 rep, true);
1925
1926 if (update_needed) {
1927 ret = __hid_request(hid, rep, HID_REQ_SET_REPORT);
1928 if (ret) {
1929 __hidinput_change_resolution_multipliers(hid,
1930 rep, false);
1931 return;
2dc702c9
PH		 1932 }
1933 }
2dc702c9
PH		 1934 }
1935
1936 /* refresh our structs */
1937 hid_setup_resolution_multiplier(hid);
1938}
1939
f635bd11
HR		 1940static void report_features(struct hid_device *hid)
1941{
1942 struct hid_driver *drv = hid->driver;
1943 struct hid_report_enum *rep_enum;
1944 struct hid_report *rep;
581c4484 1945 struct hid_usage *usage;
f635bd11
HR		 1946 int i, j;
1947
f635bd11
HR		 1948 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1949 list_for_each_entry(rep, &rep_enum->report_list, list)
cc6b54aa
BT		 1950 for (i = 0; i < rep->maxfield; i++) {
1951 /* Ignore if report count is out of bounds. */
1952 if (rep->field[i]->report_count < 1)
1953 continue;
1954
c5a92aa3 1955 for (j = 0; j < rep->field[i]->maxusage; j++) {
581c4484
DT		 1956 usage = &rep->field[i]->usage[j];
1957
c5a92aa3 1958 /* Verify if Battery Strength feature is available */
581c4484
DT		 1959 if (usage->hid == HID_DC_BATTERYSTRENGTH)
1960 hidinput_setup_battery(hid, HID_FEATURE_REPORT,
9de07a4e 1961 rep->field[i], false);
c5a92aa3
DN		 1962
1963 if (drv->feature_mapping)
581c4484 1964 drv->feature_mapping(hid, rep->field[i], usage);
c5a92aa3 1965 }
cc6b54aa 1966 }
f635bd11
HR		 1967}
1968
c554bb04
BT		 1969static struct hid_input *hidinput_allocate(struct hid_device *hid,
1970 unsigned int application)
ae751fa8
BT		 1971{
1972 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1973 struct input_dev *input_dev = input_allocate_device();
c554bb04 1974 const char *suffix = NULL;
d7065620 1975 size_t suffix_len, name_len;
c554bb04
BT		 1976
1977 if (!hidinput || !input_dev)
1978 goto fail;
1979
1980 if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) &&
1981 hid->maxapplication > 1) {
1982 switch (application) {
1983 case HID_GD_KEYBOARD:
1984 suffix = "Keyboard";
1985 break;
1986 case HID_GD_KEYPAD:
1987 suffix = "Keypad";
1988 break;
1989 case HID_GD_MOUSE:
1990 suffix = "Mouse";
1991 break;
c0ee1d57
MW		 1992 case HID_DG_PEN:
1993 /*
1994 * yes, there is an issue here:
1995 * DG_PEN -> "Stylus"
1996 * DG_STYLUS -> "Pen"
1997 * But changing this now means users with config snippets
1998 * will have to change it and the test suite will not be happy.
1999 */
2000 suffix = "Stylus";
2001 break;
c554bb04
BT		 2002 case HID_DG_STYLUS:
2003 suffix = "Pen";
2004 break;
2005 case HID_DG_TOUCHSCREEN:
2006 suffix = "Touchscreen";
2007 break;
2008 case HID_DG_TOUCHPAD:
2009 suffix = "Touchpad";
2010 break;
2011 case HID_GD_SYSTEM_CONTROL:
2012 suffix = "System Control";
2013 break;
2014 case HID_CP_CONSUMER_CONTROL:
2015 suffix = "Consumer Control";
2016 break;
2017 case HID_GD_WIRELESS_RADIO_CTLS:
2018 suffix = "Wireless Radio Control";
2019 break;
ba6b055e
BT		 2020 case HID_GD_SYSTEM_MULTIAXIS:
2021 suffix = "System Multi Axis";
2022 break;
c554bb04
BT		 2023 default:
2024 break;
2025 }
2026 }
2027
2028 if (suffix) {
d7065620
BT		 2029 name_len = strlen(hid->name);
2030 suffix_len = strlen(suffix);
2031 if ((name_len < suffix_len) ||
2032 strcmp(hid->name + name_len - suffix_len, suffix)) {
2033 hidinput->name = kasprintf(GFP_KERNEL, "%s %s",
2034 hid->name, suffix);
2035 if (!hidinput->name)
2036 goto fail;
2037 }
ae751fa8
BT		 2038 }
2039
2040 input_set_drvdata(input_dev, hid);
3c86726c 2041 input_dev->event = hidinput_input_event;
ae751fa8
BT		 2042 input_dev->open = hidinput_open;
2043 input_dev->close = hidinput_close;
2044 input_dev->setkeycode = hidinput_setkeycode;
2045 input_dev->getkeycode = hidinput_getkeycode;
2046
c554bb04 2047 input_dev->name = hidinput->name ? hidinput->name : hid->name;
ae751fa8
BT		 2048 input_dev->phys = hid->phys;
2049 input_dev->uniq = hid->uniq;
2050 input_dev->id.bustype = hid->bus;
2051 input_dev->id.vendor = hid->vendor;
2052 input_dev->id.product = hid->product;
2053 input_dev->id.version = hid->version;
bbe31754 2054 input_dev->dev.parent = &hid->dev;
e1b63c01 2055
ae751fa8 2056 hidinput->input = input_dev;
0d6c3011 2057 hidinput->application = application;
ae751fa8
BT		 2058 list_add_tail(&hidinput->list, &hid->inputs);
2059
e1b63c01
BT		 2060 INIT_LIST_HEAD(&hidinput->reports);
2061
ae751fa8 2062 return hidinput;
c554bb04
BT		 2063
2064fail:
2065 kfree(hidinput);
2066 input_free_device(input_dev);
2067 hid_err(hid, "Out of memory during hid input probe\n");
2068 return NULL;
ae751fa8
BT		 2069}
2070
4f22decf
BT		 2071static bool hidinput_has_been_populated(struct hid_input *hidinput)
2072{
2073 int i;
2074 unsigned long r = 0;
2075
2076 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++)
2077 r |= hidinput->input->evbit[i];
2078
2079 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++)
2080 r |= hidinput->input->keybit[i];
2081
2082 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++)
2083 r |= hidinput->input->relbit[i];
2084
2085 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++)
2086 r |= hidinput->input->absbit[i];
2087
2088 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++)
2089 r |= hidinput->input->mscbit[i];
2090
2091 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++)
2092 r |= hidinput->input->ledbit[i];
2093
2094 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++)
2095 r |= hidinput->input->sndbit[i];
2096
2097 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++)
2098 r |= hidinput->input->ffbit[i];
2099
2100 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++)
2101 r |= hidinput->input->swbit[i];
2102
2103 return !!r;
2104}
2105
2106static void hidinput_cleanup_hidinput(struct hid_device *hid,
2107 struct hid_input *hidinput)
2108{
2109 struct hid_report *report;
2110 int i, k;
2111
2112 list_del(&hidinput->list);
2113 input_free_device(hidinput->input);
c554bb04 2114 kfree(hidinput->name);
4f22decf
BT		 2115
2116 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
2117 if (k == HID_OUTPUT_REPORT &&
2118 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
2119 continue;
2120
2121 list_for_each_entry(report, &hid->report_enum[k].report_list,
2122 list) {
2123
2124 for (i = 0; i < report->maxfield; i++)
2125 if (report->field[i]->hidinput == hidinput)
2126 report->field[i]->hidinput = NULL;
2127 }
2128 }
2129
2130 kfree(hidinput);
2131}
2132
72d19459
BT		 2133static struct hid_input *hidinput_match(struct hid_report *report)
2134{
2135 struct hid_device *hid = report->device;
2136 struct hid_input *hidinput;
2137
2138 list_for_each_entry(hidinput, &hid->inputs, list) {
2139 if (hidinput->report &&
2140 hidinput->report->id == report->id)
2141 return hidinput;
2142 }
2143
2144 return NULL;
2145}
2146
f07b3c1d
BT		 2147static struct hid_input *hidinput_match_application(struct hid_report *report)
2148{
2149 struct hid_device *hid = report->device;
2150 struct hid_input *hidinput;
2151
2152 list_for_each_entry(hidinput, &hid->inputs, list) {
0d6c3011 2153 if (hidinput->application == report->application)
f07b3c1d 2154 return hidinput;
7c7d7ac7
DT		 2155
2156 /*
2157 * Keep SystemControl and ConsumerControl applications together
2158 * with the main keyboard, if present.
2159 */
2160 if ((report->application == HID_GD_SYSTEM_CONTROL ||
2161 report->application == HID_CP_CONSUMER_CONTROL) &&
2162 hidinput->application == HID_GD_KEYBOARD) {
2163 return hidinput;
2164 }
f07b3c1d
BT		 2165 }
2166
2167 return NULL;
2168}
2169
72d19459
BT		 2170static inline void hidinput_configure_usages(struct hid_input *hidinput,
2171 struct hid_report *report)
2172{
5c20000a
BT		 2173 int i, j, k;
2174 int first_field_index = 0;
2175 int slot_collection_index = -1;
2176 int prev_collection_index = -1;
2177 unsigned int slot_idx = 0;
2178 struct hid_field *field;
2179
2180 /*
2181 * First tag all the fields that are part of a slot,
2182 * a slot needs to have one Contact ID in the collection
2183 */
2184 for (i = 0; i < report->maxfield; i++) {
2185 field = report->field[i];
2186
2187 /* ignore fields without usage */
2188 if (field->maxusage < 1)
2189 continue;
2190
2191 /*
2192 * janitoring when collection_index changes
2193 */
2194 if (prev_collection_index != field->usage->collection_index) {
2195 prev_collection_index = field->usage->collection_index;
2196 first_field_index = i;
2197 }
2198
2199 /*
2200 * if we already found a Contact ID in the collection,
2201 * tag and continue to the next.
2202 */
2203 if (slot_collection_index == field->usage->collection_index) {
2204 field->slot_idx = slot_idx;
2205 continue;
2206 }
2207
2208 /* check if the current field has Contact ID */
2209 for (j = 0; j < field->maxusage; j++) {
2210 if (field->usage[j].hid == HID_DG_CONTACTID) {
2211 slot_collection_index = field->usage->collection_index;
2212 slot_idx++;
2213
2214 /*
2215 * mark all previous fields and this one in the
2216 * current collection to be slotted.
2217 */
2218 for (k = first_field_index; k <= i; k++)
2219 report->field[k]->slot_idx = slot_idx;
2220 break;
2221 }
2222 }
2223 }
72d19459
BT		 2224
2225 for (i = 0; i < report->maxfield; i++)
2226 for (j = 0; j < report->field[i]->maxusage; j++)
2227 hidinput_configure_usage(hidinput, report->field[i],
048cddfd
BT		 2228 report->field[i]->usage + j,
2229 j);
72d19459
BT		 2230}
2231
dde5845a
JK		 2232/*
2233 * Register the input device; print a message.
2234 * Configure the input layer interface
2235 * Read all reports and initialize the absolute field values.
2236 */
2237
93c10132 2238int hidinput_connect(struct hid_device *hid, unsigned int force)
dde5845a 2239{
9ebf3d76 2240 struct hid_driver *drv = hid->driver;
dde5845a 2241 struct hid_report *report;
72d19459 2242 struct hid_input *next, *hidinput = NULL;
c554bb04 2243 unsigned int application;
72d19459 2244 int i, k;
dde5845a
JK		 2245
2246 INIT_LIST_HEAD(&hid->inputs);
50c9d75b 2247 INIT_WORK(&hid->led_work, hidinput_led_worker);
dde5845a 2248
190d7f02
BT		 2249 hid->status &= ~HID_STAT_DUP_DETECTED;
2250
93c10132
JS		 2251 if (!force) {
2252 for (i = 0; i < hid->maxcollection; i++) {
2253 struct hid_collection *col = &hid->collection[i];
2254 if (col->type == HID_COLLECTION_APPLICATION ||
2255 col->type == HID_COLLECTION_PHYSICAL)
2256 if (IS_INPUT_APPLICATION(col->usage))
2257 break;
2258 }
dde5845a 2259
93c10132
JS		 2260 if (i == hid->maxcollection)
2261 return -1;
2262 }
dde5845a 2263
f635bd11
HR		 2264 report_features(hid);
2265
2266 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
0d2689c0
BT		 2267 if (k == HID_OUTPUT_REPORT &&
2268 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
2269 continue;
5556feae 2270
dde5845a
JK		 2271 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
2272
2273 if (!report->maxfield)
2274 continue;
2275
c554bb04
BT		 2276 application = report->application;
2277
72d19459
BT		 2278 /*
2279 * Find the previous hidinput report attached
2280 * to this report id.
2281 */
2282 if (hid->quirks & HID_QUIRK_MULTI_INPUT)
2283 hidinput = hidinput_match(report);
f07b3c1d
BT		 2284 else if (hid->maxapplication > 1 &&
2285 (hid->quirks & HID_QUIRK_INPUT_PER_APP))
2286 hidinput = hidinput_match_application(report);
72d19459 2287
dde5845a 2288 if (!hidinput) {
c554bb04 2289 hidinput = hidinput_allocate(hid, application);
ae751fa8 2290 if (!hidinput)
368d290b 2291 goto out_unwind;
dde5845a
JK		 2292 }
2293
72d19459 2294 hidinput_configure_usages(hidinput, report);
4f22decf 2295
72d19459 2296 if (hid->quirks & HID_QUIRK_MULTI_INPUT)
dde5845a 2297 hidinput->report = report;
e1b63c01
BT		 2298
2299 list_add_tail(&report->hidinput_list,
2300 &hidinput->reports);
dde5845a 2301 }
0d2689c0 2302 }
dde5845a 2303
2dc702c9
PH		 2304 hidinput_change_resolution_multipliers(hid);
2305
72d19459 2306 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
39335d1c
BT		 2307 if (drv->input_configured &&
2308 drv->input_configured(hid, hidinput))
2309 goto out_unwind;
2310
2311 if (!hidinput_has_been_populated(hidinput)) {
72d19459
BT		 2312 /* no need to register an input device not populated */
2313 hidinput_cleanup_hidinput(hid, hidinput);
2314 continue;
2315 }
2316
72d19459
BT		 2317 if (input_register_device(hidinput->input))
2318 goto out_unwind;
2319 hidinput->registered = true;
4f22decf
BT		 2320 }
2321
2322 if (list_empty(&hid->inputs)) {
2323 hid_err(hid, "No inputs registered, leaving\n");
2324 goto out_unwind;
2325 }
2326
190d7f02
BT		 2327 if (hid->status & HID_STAT_DUP_DETECTED)
2328 hid_dbg(hid,
2329 "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n");
2330
dde5845a 2331 return 0;
368d290b 2332
368d290b
DH		 2333out_unwind:
2334 /* unwind the ones we already registered */
2335 hidinput_disconnect(hid);
2336
2337 return -1;
dde5845a 2338}
229695e5 2339EXPORT_SYMBOL_GPL(hidinput_connect);
dde5845a
JK		 2340
2341void hidinput_disconnect(struct hid_device *hid)
2342{
2343 struct hid_input *hidinput, *next;
2344
4f5ca836
JF		 2345 hidinput_cleanup_battery(hid);
2346
dde5845a
JK		 2347 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
2348 list_del(&hidinput->list);
72d19459
BT		 2349 if (hidinput->registered)
2350 input_unregister_device(hidinput->input);
2351 else
2352 input_free_device(hidinput->input);
e38c0ac5 2353 kfree(hidinput->name);
dde5845a
JK		 2354 kfree(hidinput);
2355 }
50c9d75b
DH		 2356
2357 /* led_work is spawned by input_dev callbacks, but doesn't access the
2358 * parent input_dev at all. Once all input devices are removed, we
2359 * know that led_work will never get restarted, so we can cancel it
2360 * synchronously and are safe. */
2361 cancel_work_sync(&hid->led_work);
dde5845a 2362}
229695e5 2363EXPORT_SYMBOL_GPL(hidinput_disconnect);
a608dc1c
JE		 2364
2365#ifdef CONFIG_HID_KUNIT_TEST
2366#include "hid-input-test.c"
2367#endif
Linux 6.x block layer and io_uring tree(s)