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Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[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
022e8c4d
JS		 51#define map_abs(c) hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c))
52#define map_rel(c) hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c))
53#define map_key(c) hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c))
54#define map_led(c) hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c))
dde5845a 55
022e8c4d
JS		 56#define map_abs_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \
57 &max, EV_ABS, (c))
58#define map_key_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \
59 &max, EV_KEY, (c))
dde5845a 60
a0bf0ea8
DT		 61static bool match_scancode(struct hid_usage *usage,
62 unsigned int cur_idx, unsigned int scancode)
fe7ba31f 63{
a0bf0ea8 64 return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode;
fe7ba31f
MR		 65}
66
a0bf0ea8
DT		 67static bool match_keycode(struct hid_usage *usage,
68 unsigned int cur_idx, unsigned int keycode)
fe7ba31f 69{
f5854fad
DT		 70 /*
71 * We should exclude unmapped usages when doing lookup by keycode.
72 */
73 return (usage->type == EV_KEY && usage->code == keycode);
a0bf0ea8 74}
58b93995 75
a0bf0ea8
DT		 76static bool match_index(struct hid_usage *usage,
77 unsigned int cur_idx, unsigned int idx)
78{
79 return cur_idx == idx;
fe7ba31f
MR		 80}
81
a0bf0ea8
DT		 82typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage,
83 unsigned int cur_idx, unsigned int val);
84
fe7ba31f 85static struct hid_usage *hidinput_find_key(struct hid_device *hid,
a0bf0ea8
DT		 86 hid_usage_cmp_t match,
87 unsigned int value,
88 unsigned int *usage_idx)
fe7ba31f 89{
a0bf0ea8 90 unsigned int i, j, k, cur_idx = 0;
fe7ba31f
MR		 91 struct hid_report *report;
92 struct hid_usage *usage;
93
94 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
95 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
96 for (i = 0; i < report->maxfield; i++) {
a0bf0ea8 97 for (j = 0; j < report->field[i]->maxusage; j++) {
fe7ba31f 98 usage = report->field[i]->usage + j;
f5854fad 99 if (usage->type == EV_KEY || usage->type == 0) {
a0bf0ea8
DT		 100 if (match(usage, cur_idx, value)) {
101 if (usage_idx)
102 *usage_idx = cur_idx;
103 return usage;
104 }
105 cur_idx++;
106 }
fe7ba31f
MR		 107 }
108 }
109 }
110 }
111 return NULL;
112}
113
a0bf0ea8
DT		 114static struct hid_usage *hidinput_locate_usage(struct hid_device *hid,
115 const struct input_keymap_entry *ke,
116 unsigned int *index)
117{
118 struct hid_usage *usage;
119 unsigned int scancode;
120
121 if (ke->flags & INPUT_KEYMAP_BY_INDEX)
122 usage = hidinput_find_key(hid, match_index, ke->index, index);
123 else if (input_scancode_to_scalar(ke, &scancode) == 0)
124 usage = hidinput_find_key(hid, match_scancode, scancode, index);
125 else
126 usage = NULL;
127
128 return usage;
129}
130
58b93995 131static int hidinput_getkeycode(struct input_dev *dev,
a0bf0ea8 132 struct input_keymap_entry *ke)
fe7ba31f 133{
f202df60 134 struct hid_device *hid = input_get_drvdata(dev);
fe7ba31f 135 struct hid_usage *usage;
a0bf0ea8 136 unsigned int scancode, index;
77b29662 137
a0bf0ea8 138 usage = hidinput_locate_usage(hid, ke, &index);
fe7ba31f 139 if (usage) {
f5854fad
DT		 140 ke->keycode = usage->type == EV_KEY ?
141 usage->code : KEY_RESERVED;
a0bf0ea8
DT		 142 ke->index = index;
143 scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE);
144 ke->len = sizeof(scancode);
145 memcpy(ke->scancode, &scancode, sizeof(scancode));
fe7ba31f
MR		 146 return 0;
147 }
a0bf0ea8 148
fe7ba31f
MR		 149 return -EINVAL;
150}
151
58b93995 152static int hidinput_setkeycode(struct input_dev *dev,
a0bf0ea8
DT		 153 const struct input_keymap_entry *ke,
154 unsigned int *old_keycode)
fe7ba31f 155{
f202df60 156 struct hid_device *hid = input_get_drvdata(dev);
fe7ba31f 157 struct hid_usage *usage;
77b29662 158
a0bf0ea8 159 usage = hidinput_locate_usage(hid, ke, NULL);
fe7ba31f 160 if (usage) {
f5854fad
DT		 161 *old_keycode = usage->type == EV_KEY ?
162 usage->code : KEY_RESERVED;
a0bf0ea8 163 usage->code = ke->keycode;
77b29662 164
a0bf0ea8 165 clear_bit(*old_keycode, dev->keybit);
fe7ba31f 166 set_bit(usage->code, dev->keybit);
587d1452 167 dbg_hid("Assigned keycode %d to HID usage code %x\n",
a0bf0ea8
DT		 168 usage->code, usage->hid);
169
170 /*
171 * Set the keybit for the old keycode if the old keycode is used
172 * by another key
173 */
174 if (hidinput_find_key(hid, match_keycode, *old_keycode, NULL))
175 set_bit(*old_keycode, dev->keybit);
77b29662 176
fe7ba31f
MR		 177 return 0;
178 }
77b29662 179
fe7ba31f
MR		 180 return -EINVAL;
181}
182
ad0e669b 183
4ea6e4ff
NK		 184/**
185 * hidinput_calc_abs_res - calculate an absolute axis resolution
186 * @field: the HID report field to calculate resolution for
187 * @code: axis code
188 *
189 * The formula is:
190 * (logical_maximum - logical_minimum)
191 * resolution = ----------------------------------------------------------
192 * (physical_maximum - physical_minimum) * 10 ^ unit_exponent
193 *
194 * as seen in the HID specification v1.11 6.2.2.7 Global Items.
195 *
83ed79c5
DT		 196 * Only exponent 1 length units are processed. Centimeters and inches are
197 * converted to millimeters. Degrees are converted to radians.
4ea6e4ff 198 */
37cf6e6f 199__s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
4ea6e4ff
NK		 200{
201 __s32 unit_exponent = field->unit_exponent;
202 __s32 logical_extents = field->logical_maximum -
203 field->logical_minimum;
204 __s32 physical_extents = field->physical_maximum -
205 field->physical_minimum;
206 __s32 prev;
207
208 /* Check if the extents are sane */
209 if (logical_extents <= 0 || physical_extents <= 0)
210 return 0;
211
212 /*
213 * Verify and convert units.
214 * See HID specification v1.11 6.2.2.7 Global Items for unit decoding
215 */
b73b2da0
NK		 216 switch (code) {
217 case ABS_X:
218 case ABS_Y:
219 case ABS_Z:
37cf6e6f
BT		 220 case ABS_MT_POSITION_X:
221 case ABS_MT_POSITION_Y:
222 case ABS_MT_TOOL_X:
223 case ABS_MT_TOOL_Y:
224 case ABS_MT_TOUCH_MAJOR:
225 case ABS_MT_TOUCH_MINOR:
ad0e669b 226 if (field->unit == 0x11) { /* If centimeters */
83ed79c5
DT		 227 /* Convert to millimeters */
228 unit_exponent += 1;
ad0e669b 229 } else if (field->unit == 0x13) { /* If inches */
83ed79c5
DT		 230 /* Convert to millimeters */
231 prev = physical_extents;
232 physical_extents *= 254;
233 if (physical_extents < prev)
4ea6e4ff 234 return 0;
83ed79c5 235 unit_exponent -= 1;
ad0e669b 236 } else {
4ea6e4ff
NK		 237 return 0;
238 }
b73b2da0
NK		 239 break;
240
241 case ABS_RX:
242 case ABS_RY:
243 case ABS_RZ:
c0bf5741 244 case ABS_WHEEL:
b73b2da0
NK		 245 case ABS_TILT_X:
246 case ABS_TILT_Y:
4ea6e4ff
NK		 247 if (field->unit == 0x14) { /* If degrees */
248 /* Convert to radians */
249 prev = logical_extents;
250 logical_extents *= 573;
251 if (logical_extents < prev)
252 return 0;
253 unit_exponent += 1;
254 } else if (field->unit != 0x12) { /* If not radians */
255 return 0;
256 }
b73b2da0
NK		 257 break;
258
259 default:
4ea6e4ff
NK		 260 return 0;
261 }
262
263 /* Apply negative unit exponent */
264 for (; unit_exponent < 0; unit_exponent++) {
265 prev = logical_extents;
266 logical_extents *= 10;
267 if (logical_extents < prev)
268 return 0;
269 }
270 /* Apply positive unit exponent */
271 for (; unit_exponent > 0; unit_exponent--) {
272 prev = physical_extents;
273 physical_extents *= 10;
274 if (physical_extents < prev)
275 return 0;
276 }
277
278 /* Calculate resolution */
ccdd6994 279 return DIV_ROUND_CLOSEST(logical_extents, physical_extents);
4ea6e4ff 280}
37cf6e6f 281EXPORT_SYMBOL_GPL(hidinput_calc_abs_res);
4ea6e4ff 282
4f5ca836
JF		 283#ifdef CONFIG_HID_BATTERY_STRENGTH
284static enum power_supply_property hidinput_battery_props[] = {
285 POWER_SUPPLY_PROP_PRESENT,
286 POWER_SUPPLY_PROP_ONLINE,
287 POWER_SUPPLY_PROP_CAPACITY,
288 POWER_SUPPLY_PROP_MODEL_NAME,
45d9c273
JF		 289 POWER_SUPPLY_PROP_STATUS,
290 POWER_SUPPLY_PROP_SCOPE,
4f5ca836
JF		 291};
292
bbc21cfd 293#define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */
652aa6a9 294#define HID_BATTERY_QUIRK_FEATURE (1 << 1) /* ask for feature report */
5d9374cf 295#define HID_BATTERY_QUIRK_IGNORE (1 << 2) /* completely ignore the battery */
bbc21cfd
JF		 296
297static const struct hid_device_id hid_battery_quirks[] = {
4cc85417 298 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
cbd366be
RS		 299 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO),
300 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
301 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
302 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI),
303 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
652aa6a9 304 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
cbd366be 305 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI),
652aa6a9 306 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
da940db4
KR		 307 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
308 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO),
309 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
0c47935c
DN		 310 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
311 USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI),
312 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
5d9374cf
AP		 313 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM,
314 USB_DEVICE_ID_ELECOM_BM084),
315 HID_BATTERY_QUIRK_IGNORE },
0fd79184
BL		 316 { HID_USB_DEVICE(USB_VENDOR_ID_SYMBOL,
317 USB_DEVICE_ID_SYMBOL_SCANNER_3),
318 HID_BATTERY_QUIRK_IGNORE },
a767ffea
NH		 319 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK,
320 USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD),
321 HID_BATTERY_QUIRK_IGNORE },
bbc21cfd
JF		 322 {}
323};
324
325static unsigned find_battery_quirk(struct hid_device *hdev)
326{
327 unsigned quirks = 0;
328 const struct hid_device_id *match;
329
330 match = hid_match_id(hdev, hid_battery_quirks);
331 if (match != NULL)
332 quirks = match->driver_data;
333
334 return quirks;
335}
336
581c4484
DT		 337static int hidinput_scale_battery_capacity(struct hid_device *dev,
338 int value)
339{
340 if (dev->battery_min < dev->battery_max &&
341 value >= dev->battery_min && value <= dev->battery_max)
342 value = ((value - dev->battery_min) * 100) /
343 (dev->battery_max - dev->battery_min);
344
345 return value;
346}
347
348static int hidinput_query_battery_capacity(struct hid_device *dev)
349{
350 u8 *buf;
351 int ret;
352
353 buf = kmalloc(2, GFP_KERNEL);
354 if (!buf)
355 return -ENOMEM;
356
357 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 2,
358 dev->battery_report_type, HID_REQ_GET_REPORT);
359 if (ret != 2) {
360 kfree(buf);
361 return -ENODATA;
362 }
363
364 ret = hidinput_scale_battery_capacity(dev, buf[1]);
365 kfree(buf);
366 return ret;
367}
368
4f5ca836
JF		 369static int hidinput_get_battery_property(struct power_supply *psy,
370 enum power_supply_property prop,
371 union power_supply_propval *val)
372{
297d716f 373 struct hid_device *dev = power_supply_get_drvdata(psy);
581c4484 374 int value;
4f5ca836
JF		 375 int ret = 0;
376
377 switch (prop) {
378 case POWER_SUPPLY_PROP_PRESENT:
379 case POWER_SUPPLY_PROP_ONLINE:
380 val->intval = 1;
381 break;
382
383 case POWER_SUPPLY_PROP_CAPACITY:
2e210bbb
DT		 384 if (dev->battery_status != HID_BATTERY_REPORTED &&
385 !dev->battery_avoid_query) {
581c4484
DT		 386 value = hidinput_query_battery_capacity(dev);
387 if (value < 0)
388 return value;
389 } else {
390 value = dev->battery_capacity;
c5a92aa3
DN		 391 }
392
581c4484 393 val->intval = value;
4f5ca836
JF		 394 break;
395
396 case POWER_SUPPLY_PROP_MODEL_NAME:
397 val->strval = dev->name;
398 break;
399
c5a92aa3 400 case POWER_SUPPLY_PROP_STATUS:
2e210bbb
DT		 401 if (dev->battery_status != HID_BATTERY_REPORTED &&
402 !dev->battery_avoid_query) {
581c4484
DT		 403 value = hidinput_query_battery_capacity(dev);
404 if (value < 0)
405 return value;
406
407 dev->battery_capacity = value;
2e210bbb 408 dev->battery_status = HID_BATTERY_QUERIED;
581c4484
DT		 409 }
410
2e210bbb 411 if (dev->battery_status == HID_BATTERY_UNKNOWN)
581c4484
DT		 412 val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
413 else if (dev->battery_capacity == 100)
414 val->intval = POWER_SUPPLY_STATUS_FULL;
415 else
416 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
c5a92aa3
DN		 417 break;
418
45d9c273
JF		 419 case POWER_SUPPLY_PROP_SCOPE:
420 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
421 break;
422
4f5ca836
JF		 423 default:
424 ret = -EINVAL;
425 break;
426 }
427
428 return ret;
429}
430
581c4484 431static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field)
4f5ca836 432{
581c4484 433 struct power_supply_desc *psy_desc;
297d716f 434 struct power_supply_config psy_cfg = { .drv_data = dev, };
bbc21cfd 435 unsigned quirks;
2f2e3f6d 436 s32 min, max;
581c4484 437 int error;
2f2e3f6d 438
581c4484
DT		 439 if (dev->battery)
440 return 0; /* already initialized? */
4f5ca836 441
5d9374cf
AP		 442 quirks = find_battery_quirk(dev);
443
444 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
445 dev->bus, dev->vendor, dev->product, dev->version, quirks);
446
447 if (quirks & HID_BATTERY_QUIRK_IGNORE)
581c4484 448 return 0;
5d9374cf 449
297d716f 450 psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL);
581c4484
DT		 451 if (!psy_desc)
452 return -ENOMEM;
4f5ca836 453
09223865
DT		 454 psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery",
455 strlen(dev->uniq) ?
456 dev->uniq : dev_name(&dev->dev));
581c4484
DT		 457 if (!psy_desc->name) {
458 error = -ENOMEM;
459 goto err_free_mem;
297d716f
KK		 460 }
461
462 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY;
463 psy_desc->properties = hidinput_battery_props;
464 psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props);
465 psy_desc->use_for_apm = 0;
466 psy_desc->get_property = hidinput_get_battery_property;
4f5ca836 467
2f2e3f6d
JF		 468 min = field->logical_minimum;
469 max = field->logical_maximum;
470
bbc21cfd
JF		 471 if (quirks & HID_BATTERY_QUIRK_PERCENT) {
472 min = 0;
473 max = 100;
474 }
475
652aa6a9
JF		 476 if (quirks & HID_BATTERY_QUIRK_FEATURE)
477 report_type = HID_FEATURE_REPORT;
478
4f5ca836
JF		 479 dev->battery_min = min;
480 dev->battery_max = max;
fb8ac91b 481 dev->battery_report_type = report_type;
2f2e3f6d 482 dev->battery_report_id = field->report->id;
4f5ca836 483
2e210bbb
DT		 484 /*
485 * Stylus is normally not connected to the device and thus we
486 * can't query the device and get meaningful battery strength.
487 * We have to wait for the device to report it on its own.
488 */
489 dev->battery_avoid_query = report_type == HID_INPUT_REPORT &&
490 field->physical == HID_DG_STYLUS;
491
297d716f
KK		 492 dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg);
493 if (IS_ERR(dev->battery)) {
581c4484
DT		 494 error = PTR_ERR(dev->battery);
495 hid_warn(dev, "can't register power supply: %d\n", error);
496 goto err_free_name;
4f5ca836 497 }
2f2e3f6d 498
581c4484
DT		 499 power_supply_powers(dev->battery, &dev->dev);
500 return 0;
501
502err_free_name:
503 kfree(psy_desc->name);
504err_free_mem:
505 kfree(psy_desc);
506 dev->battery = NULL;
507 return error;
4f5ca836
JF		 508}
509
510static void hidinput_cleanup_battery(struct hid_device *dev)
511{
0621809e
KK		 512 const struct power_supply_desc *psy_desc;
513
297d716f 514 if (!dev->battery)
4f5ca836
JF		 515 return;
516
0621809e 517 psy_desc = dev->battery->desc;
297d716f 518 power_supply_unregister(dev->battery);
0621809e
KK		 519 kfree(psy_desc->name);
520 kfree(psy_desc);
297d716f 521 dev->battery = NULL;
4f5ca836 522}
581c4484
DT		 523
524static void hidinput_update_battery(struct hid_device *dev, int value)
525{
0152b29c
DT		 526 int capacity;
527
581c4484
DT		 528 if (!dev->battery)
529 return;
530
531 if (value == 0 || value < dev->battery_min || value > dev->battery_max)
532 return;
533
0152b29c
DT		 534 capacity = hidinput_scale_battery_capacity(dev, value);
535
2e210bbb
DT		 536 if (dev->battery_status != HID_BATTERY_REPORTED ||
537 capacity != dev->battery_capacity) {
0152b29c 538 dev->battery_capacity = capacity;
2e210bbb 539 dev->battery_status = HID_BATTERY_REPORTED;
0152b29c
DT		 540 power_supply_changed(dev->battery);
541 }
581c4484 542}
4f5ca836 543#else /* !CONFIG_HID_BATTERY_STRENGTH */
581c4484
DT		 544static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
545 struct hid_field *field)
4f5ca836 546{
581c4484 547 return 0;
4f5ca836
JF		 548}
549
550static void hidinput_cleanup_battery(struct hid_device *dev)
551{
552}
581c4484
DT		 553
554static void hidinput_update_battery(struct hid_device *dev, int value)
555{
556}
4f5ca836
JF		 557#endif /* CONFIG_HID_BATTERY_STRENGTH */
558
dde5845a
JK		 559static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
560 struct hid_usage *usage)
561{
562 struct input_dev *input = hidinput->input;
e0712985 563 struct hid_device *device = input_get_drvdata(input);
3715ade9 564 int max = 0, code;
dde5845a
JK		 565 unsigned long *bit = NULL;
566
567 field->hidinput = hidinput;
568
dde5845a
JK		 569 if (field->flags & HID_MAIN_ITEM_CONSTANT)
570 goto ignore;
571
cc6b54aa
BT		 572 /* Ignore if report count is out of bounds. */
573 if (field->report_count < 1)
574 goto ignore;
575
82eb1219
JK		 576 /* only LED usages are supported in output fields */
577 if (field->report_type == HID_OUTPUT_REPORT &&
578 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
82eb1219
JK		 579 goto ignore;
580 }
581
c500c971
JS		 582 if (device->driver->input_mapping) {
583 int ret = device->driver->input_mapping(device, hidinput, field,
584 usage, &bit, &max);
585 if (ret > 0)
586 goto mapped;
587 if (ret < 0)
588 goto ignore;
589 }
590
dde5845a 591 switch (usage->hid & HID_USAGE_PAGE) {
880d29f1
JS		 592 case HID_UP_UNDEFINED:
593 goto ignore;
dde5845a 594
880d29f1
JS		 595 case HID_UP_KEYBOARD:
596 set_bit(EV_REP, input->evbit);
dde5845a 597
880d29f1
JS		 598 if ((usage->hid & HID_USAGE) < 256) {
599 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
600 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
601 } else
602 map_key(KEY_UNKNOWN);
dde5845a 603
880d29f1 604 break;
dde5845a 605
880d29f1 606 case HID_UP_BUTTON:
7f978b9b 607 code = ((usage->hid - 1) & HID_USAGE);
dde5845a 608
880d29f1
JS		 609 switch (field->application) {
610 case HID_GD_MOUSE:
1874542d 611 case HID_GD_POINTER: code += BTN_MOUSE; break;
cf2f765f 612 case HID_GD_JOYSTICK:
fc99f22c
DM		 613 if (code <= 0xf)
614 code += BTN_JOYSTICK;
615 else
f8e86d05
IR		 616 code += BTN_TRIGGER_HAPPY - 0x10;
617 break;
618 case HID_GD_GAMEPAD:
619 if (code <= 0xf)
620 code += BTN_GAMEPAD;
621 else
622 code += BTN_TRIGGER_HAPPY - 0x10;
fc99f22c 623 break;
880d29f1
JS		 624 default:
625 switch (field->physical) {
626 case HID_GD_MOUSE:
1874542d
FF		 627 case HID_GD_POINTER: code += BTN_MOUSE; break;
628 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
629 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break;
630 default: code += BTN_MISC;
dde5845a 631 }
880d29f1 632 }
dde5845a 633
880d29f1
JS		 634 map_key(code);
635 break;
636
637 case HID_UP_SIMULATION:
638 switch (usage->hid & 0xffff) {
639 case 0xba: map_abs(ABS_RUDDER); break;
640 case 0xbb: map_abs(ABS_THROTTLE); break;
641 case 0xc4: map_abs(ABS_GAS); break;
642 case 0xc5: map_abs(ABS_BRAKE); break;
643 case 0xc8: map_abs(ABS_WHEEL); break;
644 default: goto ignore;
645 }
646 break;
647
648 case HID_UP_GENDESK:
649 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
650 switch (usage->hid & 0xf) {
651 case 0x1: map_key_clear(KEY_POWER); break;
652 case 0x2: map_key_clear(KEY_SLEEP); break;
653 case 0x3: map_key_clear(KEY_WAKEUP); break;
437f3b19
JW		 654 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
655 case 0x5: map_key_clear(KEY_MENU); break;
656 case 0x6: map_key_clear(KEY_PROG1); break;
657 case 0x7: map_key_clear(KEY_HELP); break;
658 case 0x8: map_key_clear(KEY_EXIT); break;
659 case 0x9: map_key_clear(KEY_SELECT); break;
660 case 0xa: map_key_clear(KEY_RIGHT); break;
661 case 0xb: map_key_clear(KEY_LEFT); break;
662 case 0xc: map_key_clear(KEY_UP); break;
663 case 0xd: map_key_clear(KEY_DOWN); break;
664 case 0xe: map_key_clear(KEY_POWER2); break;
665 case 0xf: map_key_clear(KEY_RESTART); break;
880d29f1 666 default: goto unknown;
dde5845a
JK		 667 }
668 break;
880d29f1 669 }
dde5845a 670
c01908a1
DT		 671 if ((usage->hid & 0xf0) == 0xb0) { /* SC - Display */
672 switch (usage->hid & 0xf) {
673 case 0x05: map_key_clear(KEY_SWITCHVIDEOMODE); break;
674 default: goto ignore;
675 }
676 break;
677 }
678
1989dada
BT		 679 /*
680 * Some lazy vendors declare 255 usages for System Control,
681 * leading to the creation of ABS_X|Y axis and too many others.
682 * It wouldn't be a problem if joydev doesn't consider the
683 * device as a joystick then.
684 */
685 if (field->application == HID_GD_SYSTEM_CONTROL)
686 goto ignore;
687
880d29f1 688 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */
dde5845a 689 switch (usage->hid) {
880d29f1
JS		 690 case HID_GD_UP: usage->hat_dir = 1; break;
691 case HID_GD_DOWN: usage->hat_dir = 5; break;
692 case HID_GD_RIGHT: usage->hat_dir = 3; break;
693 case HID_GD_LEFT: usage->hat_dir = 7; break;
694 default: goto unknown;
dde5845a 695 }
880d29f1
JS		 696 if (field->dpad) {
697 map_abs(field->dpad);
698 goto ignore;
d4ae650a 699 }
880d29f1 700 map_abs(ABS_HAT0X);
dde5845a 701 break;
880d29f1 702 }
dde5845a 703
880d29f1
JS		 704 switch (usage->hid) {
705 /* These usage IDs map directly to the usage codes. */
706 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
707 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
79346d62
BT		 708 if (field->flags & HID_MAIN_ITEM_RELATIVE)
709 map_rel(usage->hid & 0xf);
710 else
711 map_abs_clear(usage->hid & 0xf);
712 break;
713
2dc702c9
PH		 714 case HID_GD_WHEEL:
715 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
716 set_bit(REL_WHEEL, input->relbit);
717 map_rel(REL_WHEEL_HI_RES);
718 } else {
719 map_abs(usage->hid & 0xf);
720 }
721 break;
722 case HID_GD_SLIDER: case HID_GD_DIAL:
880d29f1
JS		 723 if (field->flags & HID_MAIN_ITEM_RELATIVE)
724 map_rel(usage->hid & 0xf);
725 else
726 map_abs(usage->hid & 0xf);
727 break;
dde5845a 728
880d29f1
JS		 729 case HID_GD_HATSWITCH:
730 usage->hat_min = field->logical_minimum;
731 usage->hat_max = field->logical_maximum;
732 map_abs(ABS_HAT0X);
733 break;
dde5845a 734
880d29f1
JS		 735 case HID_GD_START: map_key_clear(BTN_START); break;
736 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
dde5845a 737
61df56be
HG		 738 case HID_GD_RFKILL_BTN:
739 /* MS wireless radio ctl extension, also check CA */
6e7edabf 740 if (field->application == HID_GD_WIRELESS_RADIO_CTLS) {
61df56be
HG		 741 map_key_clear(KEY_RFKILL);
742 /* We need to simulate the btn release */
743 field->flags |= HID_MAIN_ITEM_RELATIVE;
744 break;
745 }
746
880d29f1
JS		 747 default: goto unknown;
748 }
dde5845a 749
880d29f1
JS		 750 break;
751
752 case HID_UP_LED:
753 switch (usage->hid & 0xffff) { /* HID-Value: */
754 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */
755 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */
756 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */
757 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */
758 case 0x05: map_led (LED_KANA); break; /* "Kana" */
759 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */
760 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */
761 case 0x09: map_led (LED_MUTE); break; /* "Mute" */
762 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */
763 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */
764 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */
765
766 default: goto ignore;
767 }
768 break;
769
770 case HID_UP_DIGITIZER:
8473a93d
TT		 771 if ((field->application & 0xff) == 0x01) /* Digitizer */
772 __set_bit(INPUT_PROP_POINTER, input->propbit);
773 else if ((field->application & 0xff) == 0x02) /* Pen */
774 __set_bit(INPUT_PROP_DIRECT, input->propbit);
775
880d29f1 776 switch (usage->hid & 0xff) {
8c8b01c3
FB		 777 case 0x00: /* Undefined */
778 goto ignore;
779
880d29f1
JS		 780 case 0x30: /* TipPressure */
781 if (!test_bit(BTN_TOUCH, input->keybit)) {
782 device->quirks |= HID_QUIRK_NOTOUCH;
783 set_bit(EV_KEY, input->evbit);
784 set_bit(BTN_TOUCH, input->keybit);
dde5845a 785 }
880d29f1 786 map_abs_clear(ABS_PRESSURE);
dde5845a
JK		 787 break;
788
880d29f1
JS		 789 case 0x32: /* InRange */
790 switch (field->physical & 0xff) {
791 case 0x21: map_key(BTN_TOOL_MOUSE); break;
792 case 0x22: map_key(BTN_TOOL_FINGER); break;
793 default: map_key(BTN_TOOL_PEN); break;
dde5845a
JK		 794 }
795 break;
796
581c4484
DT		 797 case 0x3b: /* Battery Strength */
798 hidinput_setup_battery(device, HID_INPUT_REPORT, field);
799 usage->type = EV_PWR;
800 goto ignore;
801
880d29f1
JS		 802 case 0x3c: /* Invert */
803 map_key_clear(BTN_TOOL_RUBBER);
dde5845a
JK		 804 break;
805
b73b2da0
NK		 806 case 0x3d: /* X Tilt */
807 map_abs_clear(ABS_TILT_X);
808 break;
809
810 case 0x3e: /* Y Tilt */
811 map_abs_clear(ABS_TILT_Y);
812 break;
813
880d29f1
JS		 814 case 0x33: /* Touch */
815 case 0x42: /* TipSwitch */
816 case 0x43: /* TipSwitch2 */
817 device->quirks &= ~HID_QUIRK_NOTOUCH;
818 map_key_clear(BTN_TOUCH);
819 break;
dde5845a 820
880d29f1
JS		 821 case 0x44: /* BarrelSwitch */
822 map_key_clear(BTN_STYLUS);
823 break;
dde5845a 824
654c192a
PC		 825 case 0x45: /* ERASER */
826 /*
827 * This event is reported when eraser tip touches the surface.
828 * Actual eraser (BTN_TOOL_RUBBER) is set by Invert usage when
829 * tool gets in proximity.
830 */
831 map_key_clear(BTN_TOUCH);
832 break;
833
50b63697 834 case 0x46: /* TabletPick */
368c9664 835 case 0x5a: /* SecondaryBarrelSwitch */
50b63697
NK		 836 map_key_clear(BTN_STYLUS2);
837 break;
838
368c9664 839 case 0x5b: /* TransducerSerialNumber */
5989a55a
JG		 840 usage->type = EV_MSC;
841 usage->code = MSC_SERIAL;
842 bit = input->mscbit;
843 max = MSC_MAX;
368c9664
PC		 844 break;
845
880d29f1
JS		 846 default: goto unknown;
847 }
848 break;
849
f3dddf24
DT		 850 case HID_UP_TELEPHONY:
851 switch (usage->hid & HID_USAGE) {
852 case 0x2f: map_key_clear(KEY_MICMUTE); break;
853 case 0xb0: map_key_clear(KEY_NUMERIC_0); break;
854 case 0xb1: map_key_clear(KEY_NUMERIC_1); break;
855 case 0xb2: map_key_clear(KEY_NUMERIC_2); break;
856 case 0xb3: map_key_clear(KEY_NUMERIC_3); break;
857 case 0xb4: map_key_clear(KEY_NUMERIC_4); break;
858 case 0xb5: map_key_clear(KEY_NUMERIC_5); break;
859 case 0xb6: map_key_clear(KEY_NUMERIC_6); break;
860 case 0xb7: map_key_clear(KEY_NUMERIC_7); break;
861 case 0xb8: map_key_clear(KEY_NUMERIC_8); break;
862 case 0xb9: map_key_clear(KEY_NUMERIC_9); break;
863 case 0xba: map_key_clear(KEY_NUMERIC_STAR); break;
864 case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break;
865 case 0xbc: map_key_clear(KEY_NUMERIC_A); break;
866 case 0xbd: map_key_clear(KEY_NUMERIC_B); break;
867 case 0xbe: map_key_clear(KEY_NUMERIC_C); break;
868 case 0xbf: map_key_clear(KEY_NUMERIC_D); break;
869 default: goto ignore;
870 }
871 break;
872
437f3b19 873 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */
880d29f1
JS		 874 switch (usage->hid & HID_USAGE) {
875 case 0x000: goto ignore;
437f3b19
JW		 876 case 0x030: map_key_clear(KEY_POWER); break;
877 case 0x031: map_key_clear(KEY_RESTART); break;
878 case 0x032: map_key_clear(KEY_SLEEP); break;
880d29f1 879 case 0x034: map_key_clear(KEY_SLEEP); break;
437f3b19 880 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break;
880d29f1
JS		 881 case 0x036: map_key_clear(BTN_MISC); break;
882
437f3b19
JW		 883 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */
884 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */
885 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */
886 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */
887 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */
888 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */
889 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */
890 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */
891 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */
892
893 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */
894 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */
895 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */
896 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */
897 case 0x069: map_key_clear(KEY_RED); break;
898 case 0x06a: map_key_clear(KEY_GREEN); break;
899 case 0x06b: map_key_clear(KEY_BLUE); break;
900 case 0x06c: map_key_clear(KEY_YELLOW); break;
f7b3d85a 901 case 0x06d: map_key_clear(KEY_ASPECT_RATIO); break;
437f3b19 902
f362e690
OG		 903 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break;
904 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break;
905 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break;
906 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break;
907 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break;
908 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break;
909
7975a1d6
DT		 910 case 0x079: map_key_clear(KEY_KBDILLUMUP); break;
911 case 0x07a: map_key_clear(KEY_KBDILLUMDOWN); break;
912 case 0x07c: map_key_clear(KEY_KBDILLUMTOGGLE); break;
913
437f3b19 914 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break;
880d29f1 915 case 0x083: map_key_clear(KEY_LAST); break;
437f3b19 916 case 0x084: map_key_clear(KEY_ENTER); break;
880d29f1
JS		 917 case 0x088: map_key_clear(KEY_PC); break;
918 case 0x089: map_key_clear(KEY_TV); break;
919 case 0x08a: map_key_clear(KEY_WWW); break;
920 case 0x08b: map_key_clear(KEY_DVD); break;
921 case 0x08c: map_key_clear(KEY_PHONE); break;
922 case 0x08d: map_key_clear(KEY_PROGRAM); break;
923 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break;
924 case 0x08f: map_key_clear(KEY_GAMES); break;
925 case 0x090: map_key_clear(KEY_MEMO); break;
926 case 0x091: map_key_clear(KEY_CD); break;
927 case 0x092: map_key_clear(KEY_VCR); break;
928 case 0x093: map_key_clear(KEY_TUNER); break;
929 case 0x094: map_key_clear(KEY_EXIT); break;
930 case 0x095: map_key_clear(KEY_HELP); break;
931 case 0x096: map_key_clear(KEY_TAPE); break;
932 case 0x097: map_key_clear(KEY_TV2); break;
933 case 0x098: map_key_clear(KEY_SAT); break;
934 case 0x09a: map_key_clear(KEY_PVR); break;
935
936 case 0x09c: map_key_clear(KEY_CHANNELUP); break;
937 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
938 case 0x0a0: map_key_clear(KEY_VCR2); break;
939
940 case 0x0b0: map_key_clear(KEY_PLAY); break;
941 case 0x0b1: map_key_clear(KEY_PAUSE); break;
942 case 0x0b2: map_key_clear(KEY_RECORD); break;
943 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
944 case 0x0b4: map_key_clear(KEY_REWIND); break;
945 case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
946 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
947 case 0x0b7: map_key_clear(KEY_STOPCD); break;
948 case 0x0b8: map_key_clear(KEY_EJECTCD); break;
949 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break;
437f3b19
JW		 950 case 0x0b9: map_key_clear(KEY_SHUFFLE); break;
951 case 0x0bf: map_key_clear(KEY_SLOW); break;
880d29f1
JS		 952
953 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
f362e690 954 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break;
880d29f1
JS		 955 case 0x0e0: map_abs_clear(ABS_VOLUME); break;
956 case 0x0e2: map_key_clear(KEY_MUTE); break;
957 case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
958 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
959 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
437f3b19 960 case 0x0f5: map_key_clear(KEY_SLOW); break;
880d29f1 961
f362e690 962 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break;
880d29f1
JS		 963 case 0x182: map_key_clear(KEY_BOOKMARKS); break;
964 case 0x183: map_key_clear(KEY_CONFIG); break;
965 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break;
966 case 0x185: map_key_clear(KEY_EDITOR); break;
967 case 0x186: map_key_clear(KEY_SPREADSHEET); break;
968 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break;
969 case 0x188: map_key_clear(KEY_PRESENTATION); break;
970 case 0x189: map_key_clear(KEY_DATABASE); break;
971 case 0x18a: map_key_clear(KEY_MAIL); break;
972 case 0x18b: map_key_clear(KEY_NEWS); break;
973 case 0x18c: map_key_clear(KEY_VOICEMAIL); break;
974 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break;
975 case 0x18e: map_key_clear(KEY_CALENDAR); break;
f362e690
OG		 976 case 0x18f: map_key_clear(KEY_TASKMANAGER); break;
977 case 0x190: map_key_clear(KEY_JOURNAL); break;
880d29f1
JS		 978 case 0x191: map_key_clear(KEY_FINANCE); break;
979 case 0x192: map_key_clear(KEY_CALC); break;
437f3b19 980 case 0x193: map_key_clear(KEY_PLAYER); break;
880d29f1
JS		 981 case 0x194: map_key_clear(KEY_FILE); break;
982 case 0x196: map_key_clear(KEY_WWW); break;
0690535d 983 case 0x199: map_key_clear(KEY_CHAT); break;
880d29f1
JS		 984 case 0x19c: map_key_clear(KEY_LOGOFF); break;
985 case 0x19e: map_key_clear(KEY_COFFEE); break;
f362e690
OG		 986 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break;
987 case 0x1a2: map_key_clear(KEY_APPSELECT); break;
5820e4d4
HG		 988 case 0x1a3: map_key_clear(KEY_NEXT); break;
989 case 0x1a4: map_key_clear(KEY_PREVIOUS); break;
880d29f1
JS		 990 case 0x1a6: map_key_clear(KEY_HELP); break;
991 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
992 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break;
437f3b19 993 case 0x1ae: map_key_clear(KEY_KEYBOARD); break;
f362e690 994 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break;
5820e4d4 995 case 0x1b4: map_key_clear(KEY_FILE); break;
437f3b19
JW		 996 case 0x1b6: map_key_clear(KEY_IMAGES); break;
997 case 0x1b7: map_key_clear(KEY_AUDIO); break;
998 case 0x1b8: map_key_clear(KEY_VIDEO); break;
880d29f1
JS		 999 case 0x1bc: map_key_clear(KEY_MESSENGER); break;
1000 case 0x1bd: map_key_clear(KEY_INFO); break;
ce856634 1001 case 0x1cb: map_key_clear(KEY_ASSISTANT); break;
880d29f1
JS		 1002 case 0x201: map_key_clear(KEY_NEW); break;
1003 case 0x202: map_key_clear(KEY_OPEN); break;
1004 case 0x203: map_key_clear(KEY_CLOSE); break;
1005 case 0x204: map_key_clear(KEY_EXIT); break;
1006 case 0x207: map_key_clear(KEY_SAVE); break;
1007 case 0x208: map_key_clear(KEY_PRINT); break;
1008 case 0x209: map_key_clear(KEY_PROPS); break;
1009 case 0x21a: map_key_clear(KEY_UNDO); break;
1010 case 0x21b: map_key_clear(KEY_COPY); break;
1011 case 0x21c: map_key_clear(KEY_CUT); break;
1012 case 0x21d: map_key_clear(KEY_PASTE); break;
1013 case 0x21f: map_key_clear(KEY_FIND); break;
1014 case 0x221: map_key_clear(KEY_SEARCH); break;
1015 case 0x222: map_key_clear(KEY_GOTO); break;
1016 case 0x223: map_key_clear(KEY_HOMEPAGE); break;
1017 case 0x224: map_key_clear(KEY_BACK); break;
1018 case 0x225: map_key_clear(KEY_FORWARD); break;
1019 case 0x226: map_key_clear(KEY_STOP); break;
1020 case 0x227: map_key_clear(KEY_REFRESH); break;
1021 case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
1022 case 0x22d: map_key_clear(KEY_ZOOMIN); break;
1023 case 0x22e: map_key_clear(KEY_ZOOMOUT); break;
1024 case 0x22f: map_key_clear(KEY_ZOOMRESET); break;
afbbaa1b 1025 case 0x232: map_key_clear(KEY_FULL_SCREEN); break;
880d29f1
JS		 1026 case 0x233: map_key_clear(KEY_SCROLLUP); break;
1027 case 0x234: map_key_clear(KEY_SCROLLDOWN); break;
2dc702c9
PH		 1028 case 0x238: /* AC Pan */
1029 set_bit(REL_HWHEEL, input->relbit);
1030 map_rel(REL_HWHEEL_HI_RES);
1031 break;
437f3b19 1032 case 0x23d: map_key_clear(KEY_EDIT); break;
880d29f1 1033 case 0x25f: map_key_clear(KEY_CANCEL); break;
437f3b19
JW		 1034 case 0x269: map_key_clear(KEY_INSERT); break;
1035 case 0x26a: map_key_clear(KEY_DELETE); break;
880d29f1
JS		 1036 case 0x279: map_key_clear(KEY_REDO); break;
1037
1038 case 0x289: map_key_clear(KEY_REPLY); break;
1039 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
1040 case 0x28c: map_key_clear(KEY_SEND); break;
1041
bd21d847
DT		 1042 case 0x29d: map_key_clear(KEY_KBD_LAYOUT_NEXT); break;
1043
f974008f
OG		 1044 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break;
1045 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break;
1046 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break;
1047 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break;
1048 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break;
1049 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break;
1050
96dd8687
DT		 1051 case 0x29f: map_key_clear(KEY_SCALE); break;
1052
afdb5cce 1053 default: map_key_clear(KEY_UNKNOWN);
880d29f1
JS		 1054 }
1055 break;
1056
4f5ca836 1057 case HID_UP_GENDEVCTRLS:
581c4484
DT		 1058 switch (usage->hid) {
1059 case HID_DC_BATTERYSTRENGTH:
1060 hidinput_setup_battery(device, HID_INPUT_REPORT, field);
1061 usage->type = EV_PWR;
4f5ca836 1062 goto ignore;
581c4484
DT		 1063 }
1064 goto unknown;
4f5ca836 1065
880d29f1
JS		 1066 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
1067 set_bit(EV_REP, input->evbit);
1068 switch (usage->hid & HID_USAGE) {
1069 case 0x021: map_key_clear(KEY_PRINT); break;
1070 case 0x070: map_key_clear(KEY_HP); break;
1071 case 0x071: map_key_clear(KEY_CAMERA); break;
1072 case 0x072: map_key_clear(KEY_SOUND); break;
1073 case 0x073: map_key_clear(KEY_QUESTION); break;
1074 case 0x080: map_key_clear(KEY_EMAIL); break;
1075 case 0x081: map_key_clear(KEY_CHAT); break;
1076 case 0x082: map_key_clear(KEY_SEARCH); break;
1077 case 0x083: map_key_clear(KEY_CONNECT); break;
1078 case 0x084: map_key_clear(KEY_FINANCE); break;
1079 case 0x085: map_key_clear(KEY_SPORT); break;
1080 case 0x086: map_key_clear(KEY_SHOP); break;
929578ab
KYL		 1081 default: goto ignore;
1082 }
1083 break;
1084
1085 case HID_UP_HPVENDOR2:
1086 set_bit(EV_REP, input->evbit);
1087 switch (usage->hid & HID_USAGE) {
08fc9473 1088 case 0x001: map_key_clear(KEY_MICMUTE); break;
929578ab
KYL		 1089 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break;
1090 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break;
880d29f1
JS		 1091 default: goto ignore;
1092 }
1093 break;
dde5845a 1094
880d29f1
JS		 1095 case HID_UP_MSVENDOR:
1096 goto ignore;
dde5845a 1097
880d29f1
JS		 1098 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
1099 set_bit(EV_REP, input->evbit);
1100 goto ignore;
dde5845a 1101
880d29f1 1102 case HID_UP_LOGIVENDOR:
b466c1dd
SW		 1103 /* intentional fallback */
1104 case HID_UP_LOGIVENDOR2:
1105 /* intentional fallback */
1106 case HID_UP_LOGIVENDOR3:
880d29f1 1107 goto ignore;
fc99f22c 1108
880d29f1
JS		 1109 case HID_UP_PID:
1110 switch (usage->hid & HID_USAGE) {
1111 case 0xa4: map_key_clear(BTN_DEAD); break;
1112 default: goto ignore;
1113 }
1114 break;
dde5845a 1115
880d29f1
JS		 1116 default:
1117 unknown:
1118 if (field->report_size == 1) {
1119 if (field->report->type == HID_OUTPUT_REPORT) {
1120 map_led(LED_MISC);
dde5845a
JK		 1121 break;
1122 }
880d29f1 1123 map_key(BTN_MISC);
dde5845a 1124 break;
880d29f1
JS		 1125 }
1126 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
1127 map_rel(REL_MISC);
1128 break;
1129 }
1130 map_abs(ABS_MISC);
1131 break;
dde5845a
JK		 1132 }
1133
10bd065f 1134mapped:
c500c971
JS		 1135 if (device->driver->input_mapped && device->driver->input_mapped(device,
1136 hidinput, field, usage, &bit, &max) < 0)
1137 goto ignore;
1138
dde5845a
JK		 1139 set_bit(usage->type, input->evbit);
1140
190d7f02
BT		 1141 /*
1142 * This part is *really* controversial:
1143 * - HID aims at being generic so we should do our best to export
1144 * all incoming events
1145 * - HID describes what events are, so there is no reason for ABS_X
1146 * to be mapped to ABS_Y
1147 * - HID is using *_MISC+N as a default value, but nothing prevents
1148 * *_MISC+N to overwrite a legitimate even, which confuses userspace
1149 * (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different
1150 * processing)
1151 *
1152 * If devices still want to use this (at their own risk), they will
1153 * have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but
1154 * the default should be a reliable mapping.
1155 */
1156 while (usage->code <= max && test_and_set_bit(usage->code, bit)) {
1157 if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) {
1158 usage->code = find_next_zero_bit(bit,
1159 max + 1,
1160 usage->code);
1161 } else {
1162 device->status |= HID_STAT_DUP_DETECTED;
1163 goto ignore;
1164 }
1165 }
dde5845a
JK		 1166
1167 if (usage->code > max)
1168 goto ignore;
1169
dde5845a
JK		 1170 if (usage->type == EV_ABS) {
1171
1172 int a = field->logical_minimum;
1173 int b = field->logical_maximum;
1174
1175 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
1176 a = field->logical_minimum = 0;
1177 b = field->logical_maximum = 255;
1178 }
1179
1180 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
1181 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
1182 else input_set_abs_params(input, usage->code, a, b, 0, 0);
1183
4ea6e4ff
NK		 1184 input_abs_set_res(input, usage->code,
1185 hidinput_calc_abs_res(field, usage->code));
1186
6967b4d9
HR		 1187 /* use a larger default input buffer for MT devices */
1188 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
1189 input_set_events_per_packet(input, 60);
dde5845a
JK		 1190 }
1191
1192 if (usage->type == EV_ABS &&
1193 (usage->hat_min < usage->hat_max || usage->hat_dir)) {
1194 int i;
1195 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
1196 input_set_abs_params(input, i, -1, 1, 0, 0);
1197 set_bit(i, input->absbit);
1198 }
1199 if (usage->hat_dir && !field->dpad)
1200 field->dpad = usage->code;
1201 }
1202
2c1d8aea
JK		 1203 /* for those devices which produce Consumer volume usage as relative,
1204 * we emulate pressing volumeup/volumedown appropriate number of times
1205 * in hidinput_hid_event()
1206 */
1207 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1208 (usage->code == ABS_VOLUME)) {
1209 set_bit(KEY_VOLUMEUP, input->keybit);
1210 set_bit(KEY_VOLUMEDOWN, input->keybit);
1211 }
1212
c01d50d1
JK		 1213 if (usage->type == EV_KEY) {
1214 set_bit(EV_MSC, input->evbit);
1215 set_bit(MSC_SCAN, input->mscbit);
1216 }
1217
dde5845a 1218ignore:
dde5845a 1219 return;
a635f9dd 1220
dde5845a
JK		 1221}
1222
2dc702c9
PH		 1223static void hidinput_handle_scroll(struct hid_usage *usage,
1224 struct input_dev *input,
1225 __s32 value)
1226{
1227 int code;
1228 int hi_res, lo_res;
1229
1230 if (value == 0)
1231 return;
1232
1233 if (usage->code == REL_WHEEL_HI_RES)
1234 code = REL_WHEEL;
1235 else
1236 code = REL_HWHEEL;
1237
1238 /*
1239 * Windows reports one wheel click as value 120. Where a high-res
1240 * scroll wheel is present, a fraction of 120 is reported instead.
1241 * Our REL_WHEEL_HI_RES axis does the same because all HW must
1242 * adhere to the 120 expectation.
1243 */
1244 hi_res = value * 120/usage->resolution_multiplier;
1245
1246 usage->wheel_accumulated += hi_res;
1247 lo_res = usage->wheel_accumulated/120;
1248 if (lo_res)
1249 usage->wheel_accumulated -= lo_res * 120;
1250
1251 input_event(input, EV_REL, code, lo_res);
1252 input_event(input, EV_REL, usage->code, hi_res);
1253}
1254
dde5845a
JK		 1255void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
1256{
1257 struct input_dev *input;
b4482a4b 1258 unsigned *quirks = &hid->quirks;
dde5845a 1259
581c4484 1260 if (!usage->type)
dde5845a
JK		 1261 return;
1262
581c4484
DT		 1263 if (usage->type == EV_PWR) {
1264 hidinput_update_battery(hid, value);
1265 return;
1266 }
dde5845a 1267
581c4484 1268 if (!field->hidinput)
dde5845a
JK		 1269 return;
1270
581c4484
DT		 1271 input = field->hidinput->input;
1272
dde5845a
JK		 1273 if (usage->hat_min < usage->hat_max || usage->hat_dir) {
1274 int hat_dir = usage->hat_dir;
1275 if (!hat_dir)
1276 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
1277 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
1278 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);
fc99f22c
DM		 1279 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
1280 return;
1281 }
dde5845a
JK		 1282
1283 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
1284 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
1285 return;
1286 }
1287
1288 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
1289 if (value) {
1290 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
1291 return;
1292 }
1293 input_event(input, usage->type, usage->code, 0);
1294 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
1295 return;
1296 }
1297
1298 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
1299 int a = field->logical_minimum;
1300 int b = field->logical_maximum;
1301 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
1302 }
1303
1304 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
58037eb9 1305 dbg_hid("Maximum Effects - %d\n",value);
dde5845a
JK		 1306 return;
1307 }
1308
1309 if (usage->hid == (HID_UP_PID | 0x7fUL)) {
58037eb9 1310 dbg_hid("PID Pool Report\n");
dde5845a
JK		 1311 return;
1312 }
1313
1314 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
1315 return;
1316
2dc702c9
PH		 1317 if ((usage->type == EV_REL) && (usage->code == REL_WHEEL_HI_RES ||
1318 usage->code == REL_HWHEEL_HI_RES)) {
1319 hidinput_handle_scroll(usage, input, value);
1320 return;
1321 }
1322
2c1d8aea
JK		 1323 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1324 (usage->code == ABS_VOLUME)) {
1325 int count = abs(value);
1326 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
1327 int i;
1328
1329 for (i = 0; i < count; i++) {
1330 input_event(input, EV_KEY, direction, 1);
1331 input_sync(input);
1332 input_event(input, EV_KEY, direction, 0);
1333 input_sync(input);
1334 }
1335 return;
1336 }
1337
883e0e36
NK		 1338 /*
1339 * Ignore out-of-range values as per HID specification,
c3883fe0
TK		 1340 * section 5.10 and 6.2.25, when NULL state bit is present.
1341 * When it's not, clamp the value to match Microsoft's input
1342 * driver as mentioned in "Required HID usages for digitizers":
1343 * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp
a688393b
JK		 1344 *
1345 * The logical_minimum < logical_maximum check is done so that we
1346 * don't unintentionally discard values sent by devices which
1347 * don't specify logical min and max.
883e0e36
NK		 1348 */
1349 if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
c3883fe0
TK		 1350 (field->logical_minimum < field->logical_maximum)) {
1351 if (field->flags & HID_MAIN_ITEM_NULL_STATE &&
1352 (value < field->logical_minimum ||
1353 value > field->logical_maximum)) {
1354 dbg_hid("Ignoring out-of-range value %x\n", value);
1355 return;
1356 }
1357 value = clamp(value,
1358 field->logical_minimum,
1359 field->logical_maximum);
6da70669
JK		 1360 }
1361
6ce901eb
DH		 1362 /*
1363 * Ignore reports for absolute data if the data didn't change. This is
1364 * not only an optimization but also fixes 'dead' key reports. Some
1365 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID
1366 * 0x31 and 0x32) report multiple keys, even though a localized keyboard
1367 * can only have one of them physically available. The 'dead' keys
1368 * report constant 0. As all map to the same keycode, they'd confuse
1369 * the input layer. If we filter the 'dead' keys on the HID level, we
1370 * skip the keycode translation and only forward real events.
1371 */
1372 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE |
1373 HID_MAIN_ITEM_BUFFERED_BYTE)) &&
8e7b3410 1374 (field->flags & HID_MAIN_ITEM_VARIABLE) &&
6ce901eb
DH		 1375 usage->usage_index < field->maxusage &&
1376 value == field->value[usage->usage_index])
1377 return;
1378
c01d50d1 1379 /* report the usage code as scancode if the key status has changed */
323ddaa8
JB		 1380 if (usage->type == EV_KEY &&
1381 (!test_bit(usage->code, input->key)) == value)
c01d50d1 1382 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
1fe8736d 1383
dde5845a
JK		 1384 input_event(input, usage->type, usage->code, value);
1385
3eb4351a
DT		 1386 if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
1387 usage->type == EV_KEY && value) {
1388 input_sync(input);
dde5845a 1389 input_event(input, usage->type, usage->code, 0);
3eb4351a 1390 }
dde5845a
JK		 1391}
1392
1393void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1394{
1395 struct hid_input *hidinput;
1396
24750f3e
HR		 1397 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1398 return;
1399
dde5845a
JK		 1400 list_for_each_entry(hidinput, &hid->inputs, list)
1401 input_sync(hidinput->input);
1402}
229695e5 1403EXPORT_SYMBOL_GPL(hidinput_report_event);
dde5845a 1404
229695e5 1405int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
dde5845a
JK		 1406{
1407 struct hid_report *report;
1408 int i, j;
1409
1410 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1411 for (i = 0; i < report->maxfield; i++) {
1412 *field = report->field[i];
1413 for (j = 0; j < (*field)->maxusage; j++)
1414 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1415 return j;
1416 }
1417 }
1418 return -1;
1419}
229695e5 1420EXPORT_SYMBOL_GPL(hidinput_find_field);
dde5845a 1421
4371ea82
DK		 1422struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1423{
1424 struct hid_report *report;
1425 struct hid_field *field;
1426 int i, j;
1427
1428 list_for_each_entry(report,
1429 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1430 list) {
1431 for (i = 0; i < report->maxfield; i++) {
1432 field = report->field[i];
1433 for (j = 0; j < field->maxusage; j++)
1434 if (field->usage[j].type == EV_LED)
1435 return field;
1436 }
1437 }
1438 return NULL;
1439}
1440EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1441
1442unsigned int hidinput_count_leds(struct hid_device *hid)
1443{
1444 struct hid_report *report;
1445 struct hid_field *field;
1446 int i, j;
1447 unsigned int count = 0;
1448
1449 list_for_each_entry(report,
1450 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1451 list) {
1452 for (i = 0; i < report->maxfield; i++) {
1453 field = report->field[i];
1454 for (j = 0; j < field->maxusage; j++)
1455 if (field->usage[j].type == EV_LED &&
1456 field->value[j])
1457 count += 1;
1458 }
1459 }
1460 return count;
1461}
1462EXPORT_SYMBOL_GPL(hidinput_count_leds);
1463
50c9d75b
DH		 1464static void hidinput_led_worker(struct work_struct *work)
1465{
1466 struct hid_device *hid = container_of(work, struct hid_device,
1467 led_work);
1468 struct hid_field *field;
1469 struct hid_report *report;
3064a03b
AM		 1470 int ret;
1471 u32 len;
50c9d75b
DH		 1472 __u8 *buf;
1473
1474 field = hidinput_get_led_field(hid);
1475 if (!field)
1476 return;
1477
1478 /*
1479 * field->report is accessed unlocked regarding HID core. So there might
1480 * be another incoming SET-LED request from user-space, which changes
1481 * the LED state while we assemble our outgoing buffer. However, this
1482 * doesn't matter as hid_output_report() correctly converts it into a
1483 * boolean value no matter what information is currently set on the LED
1484 * field (even garbage). So the remote device will always get a valid
1485 * request.
1486 * And in case we send a wrong value, a next led worker is spawned
1487 * for every SET-LED request so the following worker will send the
1488 * correct value, guaranteed!
1489 */
1490
1491 report = field->report;
1492
1493 /* use custom SET_REPORT request if possible (asynchronous) */
1494 if (hid->ll_driver->request)
1495 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT);
1496
1497 /* fall back to generic raw-output-report */
dabb05c6 1498 len = hid_report_len(report);
9d27f432 1499 buf = hid_alloc_report_buf(report, GFP_KERNEL);
50c9d75b
DH		 1500 if (!buf)
1501 return;
1502
1503 hid_output_report(report, buf);
1504 /* synchronous output report */
2ebaebcf
BT		 1505 ret = hid_hw_output_report(hid, buf, len);
1506 if (ret == -ENOSYS)
1507 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT,
1508 HID_REQ_SET_REPORT);
50c9d75b
DH		 1509 kfree(buf);
1510}
1511
1512static int hidinput_input_event(struct input_dev *dev, unsigned int type,
1513 unsigned int code, int value)
1514{
1515 struct hid_device *hid = input_get_drvdata(dev);
1516 struct hid_field *field;
1517 int offset;
1518
1519 if (type == EV_FF)
1520 return input_ff_event(dev, type, code, value);
1521
1522 if (type != EV_LED)
1523 return -1;
1524
1525 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
1526 hid_warn(dev, "event field not found\n");
1527 return -1;
1528 }
1529
1530 hid_set_field(field, offset, value);
1531
1532 schedule_work(&hid->led_work);
1533 return 0;
1534}
1535
7c379146
JK		 1536static int hidinput_open(struct input_dev *dev)
1537{
e0712985
DT		 1538 struct hid_device *hid = input_get_drvdata(dev);
1539
5bea7660 1540 return hid_hw_open(hid);
7c379146
JK		 1541}
1542
1543static void hidinput_close(struct input_dev *dev)
1544{
e0712985
DT		 1545 struct hid_device *hid = input_get_drvdata(dev);
1546
5bea7660 1547 hid_hw_close(hid);
7c379146
JK		 1548}
1549
d43c17ea
BT		 1550static bool __hidinput_change_resolution_multipliers(struct hid_device *hid,
1551 struct hid_report *report, bool use_logical_max)
2dc702c9 1552{
2dc702c9 1553 struct hid_usage *usage;
d43c17ea 1554 bool update_needed = false;
2dc702c9
PH		 1555 int i, j;
1556
d43c17ea
BT		 1557 if (report->maxfield == 0)
1558 return false;
2dc702c9 1559
d43c17ea
BT		 1560 /*
1561 * If we have more than one feature within this report we
1562 * need to fill in the bits from the others before we can
1563 * overwrite the ones for the Resolution Multiplier.
1564 */
1565 if (report->maxfield > 1) {
1566 hid_hw_request(hid, report, HID_REQ_GET_REPORT);
1567 hid_hw_wait(hid);
1568 }
2dc702c9 1569
d43c17ea
BT		 1570 for (i = 0; i < report->maxfield; i++) {
1571 __s32 value = use_logical_max ?
1572 report->field[i]->logical_maximum :
1573 report->field[i]->logical_minimum;
1574
1575 /* There is no good reason for a Resolution
1576 * Multiplier to have a count other than 1.
1577 * Ignore that case.
2dc702c9 1578 */
d43c17ea
BT		 1579 if (report->field[i]->report_count != 1)
1580 continue;
2dc702c9 1581
d43c17ea
BT		 1582 for (j = 0; j < report->field[i]->maxusage; j++) {
1583 usage = &report->field[i]->usage[j];
2dc702c9 1584
d43c17ea 1585 if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER)
2dc702c9
PH		 1586 continue;
1587
39b3c3a5 1588 report->field[i]->value[j] = value;
d43c17ea
BT		 1589 update_needed = true;
1590 }
1591 }
1592
1593 return update_needed;
1594}
2dc702c9 1595
d43c17ea
BT		 1596static void hidinput_change_resolution_multipliers(struct hid_device *hid)
1597{
1598 struct hid_report_enum *rep_enum;
1599 struct hid_report *rep;
1600 int ret;
2dc702c9 1601
d43c17ea
BT		 1602 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1603 list_for_each_entry(rep, &rep_enum->report_list, list) {
1604 bool update_needed = __hidinput_change_resolution_multipliers(hid,
1605 rep, true);
1606
1607 if (update_needed) {
1608 ret = __hid_request(hid, rep, HID_REQ_SET_REPORT);
1609 if (ret) {
1610 __hidinput_change_resolution_multipliers(hid,
1611 rep, false);
1612 return;
2dc702c9
PH		 1613 }
1614 }
2dc702c9
PH		 1615 }
1616
1617 /* refresh our structs */
1618 hid_setup_resolution_multiplier(hid);
1619}
1620
f635bd11
HR		 1621static void report_features(struct hid_device *hid)
1622{
1623 struct hid_driver *drv = hid->driver;
1624 struct hid_report_enum *rep_enum;
1625 struct hid_report *rep;
581c4484 1626 struct hid_usage *usage;
f635bd11
HR		 1627 int i, j;
1628
f635bd11
HR		 1629 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1630 list_for_each_entry(rep, &rep_enum->report_list, list)
cc6b54aa
BT		 1631 for (i = 0; i < rep->maxfield; i++) {
1632 /* Ignore if report count is out of bounds. */
1633 if (rep->field[i]->report_count < 1)
1634 continue;
1635
c5a92aa3 1636 for (j = 0; j < rep->field[i]->maxusage; j++) {
581c4484
DT		 1637 usage = &rep->field[i]->usage[j];
1638
c5a92aa3 1639 /* Verify if Battery Strength feature is available */
581c4484
DT		 1640 if (usage->hid == HID_DC_BATTERYSTRENGTH)
1641 hidinput_setup_battery(hid, HID_FEATURE_REPORT,
1642 rep->field[i]);
c5a92aa3
DN		 1643
1644 if (drv->feature_mapping)
581c4484 1645 drv->feature_mapping(hid, rep->field[i], usage);
c5a92aa3 1646 }
cc6b54aa 1647 }
f635bd11
HR		 1648}
1649
c554bb04
BT		 1650static struct hid_input *hidinput_allocate(struct hid_device *hid,
1651 unsigned int application)
ae751fa8
BT		 1652{
1653 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1654 struct input_dev *input_dev = input_allocate_device();
c554bb04 1655 const char *suffix = NULL;
d7065620 1656 size_t suffix_len, name_len;
c554bb04
BT		 1657
1658 if (!hidinput || !input_dev)
1659 goto fail;
1660
1661 if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) &&
1662 hid->maxapplication > 1) {
1663 switch (application) {
1664 case HID_GD_KEYBOARD:
1665 suffix = "Keyboard";
1666 break;
1667 case HID_GD_KEYPAD:
1668 suffix = "Keypad";
1669 break;
1670 case HID_GD_MOUSE:
1671 suffix = "Mouse";
1672 break;
1673 case HID_DG_STYLUS:
1674 suffix = "Pen";
1675 break;
1676 case HID_DG_TOUCHSCREEN:
1677 suffix = "Touchscreen";
1678 break;
1679 case HID_DG_TOUCHPAD:
1680 suffix = "Touchpad";
1681 break;
1682 case HID_GD_SYSTEM_CONTROL:
1683 suffix = "System Control";
1684 break;
1685 case HID_CP_CONSUMER_CONTROL:
1686 suffix = "Consumer Control";
1687 break;
1688 case HID_GD_WIRELESS_RADIO_CTLS:
1689 suffix = "Wireless Radio Control";
1690 break;
ba6b055e
BT		 1691 case HID_GD_SYSTEM_MULTIAXIS:
1692 suffix = "System Multi Axis";
1693 break;
c554bb04
BT		 1694 default:
1695 break;
1696 }
1697 }
1698
1699 if (suffix) {
d7065620
BT		 1700 name_len = strlen(hid->name);
1701 suffix_len = strlen(suffix);
1702 if ((name_len < suffix_len) ||
1703 strcmp(hid->name + name_len - suffix_len, suffix)) {
1704 hidinput->name = kasprintf(GFP_KERNEL, "%s %s",
1705 hid->name, suffix);
1706 if (!hidinput->name)
1707 goto fail;
1708 }
ae751fa8
BT		 1709 }
1710
1711 input_set_drvdata(input_dev, hid);
3c86726c 1712 input_dev->event = hidinput_input_event;
ae751fa8
BT		 1713 input_dev->open = hidinput_open;
1714 input_dev->close = hidinput_close;
1715 input_dev->setkeycode = hidinput_setkeycode;
1716 input_dev->getkeycode = hidinput_getkeycode;
1717
c554bb04 1718 input_dev->name = hidinput->name ? hidinput->name : hid->name;
ae751fa8
BT		 1719 input_dev->phys = hid->phys;
1720 input_dev->uniq = hid->uniq;
1721 input_dev->id.bustype = hid->bus;
1722 input_dev->id.vendor = hid->vendor;
1723 input_dev->id.product = hid->product;
1724 input_dev->id.version = hid->version;
bbe31754 1725 input_dev->dev.parent = &hid->dev;
e1b63c01 1726
ae751fa8 1727 hidinput->input = input_dev;
0d6c3011 1728 hidinput->application = application;
ae751fa8
BT		 1729 list_add_tail(&hidinput->list, &hid->inputs);
1730
e1b63c01
BT		 1731 INIT_LIST_HEAD(&hidinput->reports);
1732
ae751fa8 1733 return hidinput;
c554bb04
BT		 1734
1735fail:
1736 kfree(hidinput);
1737 input_free_device(input_dev);
1738 hid_err(hid, "Out of memory during hid input probe\n");
1739 return NULL;
ae751fa8
BT		 1740}
1741
4f22decf
BT		 1742static bool hidinput_has_been_populated(struct hid_input *hidinput)
1743{
1744 int i;
1745 unsigned long r = 0;
1746
1747 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++)
1748 r |= hidinput->input->evbit[i];
1749
1750 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++)
1751 r |= hidinput->input->keybit[i];
1752
1753 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++)
1754 r |= hidinput->input->relbit[i];
1755
1756 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++)
1757 r |= hidinput->input->absbit[i];
1758
1759 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++)
1760 r |= hidinput->input->mscbit[i];
1761
1762 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++)
1763 r |= hidinput->input->ledbit[i];
1764
1765 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++)
1766 r |= hidinput->input->sndbit[i];
1767
1768 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++)
1769 r |= hidinput->input->ffbit[i];
1770
1771 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++)
1772 r |= hidinput->input->swbit[i];
1773
1774 return !!r;
1775}
1776
1777static void hidinput_cleanup_hidinput(struct hid_device *hid,
1778 struct hid_input *hidinput)
1779{
1780 struct hid_report *report;
1781 int i, k;
1782
1783 list_del(&hidinput->list);
1784 input_free_device(hidinput->input);
c554bb04 1785 kfree(hidinput->name);
4f22decf
BT		 1786
1787 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1788 if (k == HID_OUTPUT_REPORT &&
1789 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1790 continue;
1791
1792 list_for_each_entry(report, &hid->report_enum[k].report_list,
1793 list) {
1794
1795 for (i = 0; i < report->maxfield; i++)
1796 if (report->field[i]->hidinput == hidinput)
1797 report->field[i]->hidinput = NULL;
1798 }
1799 }
1800
1801 kfree(hidinput);
1802}
1803
72d19459
BT		 1804static struct hid_input *hidinput_match(struct hid_report *report)
1805{
1806 struct hid_device *hid = report->device;
1807 struct hid_input *hidinput;
1808
1809 list_for_each_entry(hidinput, &hid->inputs, list) {
1810 if (hidinput->report &&
1811 hidinput->report->id == report->id)
1812 return hidinput;
1813 }
1814
1815 return NULL;
1816}
1817
f07b3c1d
BT		 1818static struct hid_input *hidinput_match_application(struct hid_report *report)
1819{
1820 struct hid_device *hid = report->device;
1821 struct hid_input *hidinput;
1822
1823 list_for_each_entry(hidinput, &hid->inputs, list) {
0d6c3011 1824 if (hidinput->application == report->application)
f07b3c1d
BT		 1825 return hidinput;
1826 }
1827
1828 return NULL;
1829}
1830
72d19459
BT		 1831static inline void hidinput_configure_usages(struct hid_input *hidinput,
1832 struct hid_report *report)
1833{
1834 int i, j;
1835
1836 for (i = 0; i < report->maxfield; i++)
1837 for (j = 0; j < report->field[i]->maxusage; j++)
1838 hidinput_configure_usage(hidinput, report->field[i],
1839 report->field[i]->usage + j);
1840}
1841
dde5845a
JK		 1842/*
1843 * Register the input device; print a message.
1844 * Configure the input layer interface
1845 * Read all reports and initialize the absolute field values.
1846 */
1847
93c10132 1848int hidinput_connect(struct hid_device *hid, unsigned int force)
dde5845a 1849{
9ebf3d76 1850 struct hid_driver *drv = hid->driver;
dde5845a 1851 struct hid_report *report;
72d19459 1852 struct hid_input *next, *hidinput = NULL;
c554bb04 1853 unsigned int application;
72d19459 1854 int i, k;
dde5845a
JK		 1855
1856 INIT_LIST_HEAD(&hid->inputs);
50c9d75b 1857 INIT_WORK(&hid->led_work, hidinput_led_worker);
dde5845a 1858
190d7f02
BT		 1859 hid->status &= ~HID_STAT_DUP_DETECTED;
1860
93c10132
JS		 1861 if (!force) {
1862 for (i = 0; i < hid->maxcollection; i++) {
1863 struct hid_collection *col = &hid->collection[i];
1864 if (col->type == HID_COLLECTION_APPLICATION ||
1865 col->type == HID_COLLECTION_PHYSICAL)
1866 if (IS_INPUT_APPLICATION(col->usage))
1867 break;
1868 }
dde5845a 1869
93c10132
JS		 1870 if (i == hid->maxcollection)
1871 return -1;
1872 }
dde5845a 1873
f635bd11
HR		 1874 report_features(hid);
1875
1876 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
0d2689c0
BT		 1877 if (k == HID_OUTPUT_REPORT &&
1878 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1879 continue;
5556feae 1880
dde5845a
JK		 1881 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
1882
1883 if (!report->maxfield)
1884 continue;
1885
c554bb04
BT		 1886 application = report->application;
1887
72d19459
BT		 1888 /*
1889 * Find the previous hidinput report attached
1890 * to this report id.
1891 */
1892 if (hid->quirks & HID_QUIRK_MULTI_INPUT)
1893 hidinput = hidinput_match(report);
f07b3c1d
BT		 1894 else if (hid->maxapplication > 1 &&
1895 (hid->quirks & HID_QUIRK_INPUT_PER_APP))
1896 hidinput = hidinput_match_application(report);
72d19459 1897
dde5845a 1898 if (!hidinput) {
c554bb04 1899 hidinput = hidinput_allocate(hid, application);
ae751fa8 1900 if (!hidinput)
368d290b 1901 goto out_unwind;
dde5845a
JK		 1902 }
1903
72d19459 1904 hidinput_configure_usages(hidinput, report);
4f22decf 1905
72d19459 1906 if (hid->quirks & HID_QUIRK_MULTI_INPUT)
dde5845a 1907 hidinput->report = report;
e1b63c01
BT		 1908
1909 list_add_tail(&report->hidinput_list,
1910 &hidinput->reports);
dde5845a 1911 }
0d2689c0 1912 }
dde5845a 1913
2dc702c9
PH		 1914 hidinput_change_resolution_multipliers(hid);
1915
72d19459 1916 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
39335d1c
BT		 1917 if (drv->input_configured &&
1918 drv->input_configured(hid, hidinput))
1919 goto out_unwind;
1920
1921 if (!hidinput_has_been_populated(hidinput)) {
72d19459
BT		 1922 /* no need to register an input device not populated */
1923 hidinput_cleanup_hidinput(hid, hidinput);
1924 continue;
1925 }
1926
72d19459
BT		 1927 if (input_register_device(hidinput->input))
1928 goto out_unwind;
1929 hidinput->registered = true;
4f22decf
BT		 1930 }
1931
1932 if (list_empty(&hid->inputs)) {
1933 hid_err(hid, "No inputs registered, leaving\n");
1934 goto out_unwind;
1935 }
1936
190d7f02
BT		 1937 if (hid->status & HID_STAT_DUP_DETECTED)
1938 hid_dbg(hid,
1939 "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n");
1940
dde5845a 1941 return 0;
368d290b 1942
368d290b
DH		 1943out_unwind:
1944 /* unwind the ones we already registered */
1945 hidinput_disconnect(hid);
1946
1947 return -1;
dde5845a 1948}
229695e5 1949EXPORT_SYMBOL_GPL(hidinput_connect);
dde5845a
JK		 1950
1951void hidinput_disconnect(struct hid_device *hid)
1952{
1953 struct hid_input *hidinput, *next;
1954
4f5ca836
JF		 1955 hidinput_cleanup_battery(hid);
1956
dde5845a
JK		 1957 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1958 list_del(&hidinput->list);
72d19459
BT		 1959 if (hidinput->registered)
1960 input_unregister_device(hidinput->input);
1961 else
1962 input_free_device(hidinput->input);
e38c0ac5 1963 kfree(hidinput->name);
dde5845a
JK		 1964 kfree(hidinput);
1965 }
50c9d75b
DH		 1966
1967 /* led_work is spawned by input_dev callbacks, but doesn't access the
1968 * parent input_dev at all. Once all input devices are removed, we
1969 * know that led_work will never get restarted, so we can cancel it
1970 * synchronously and are safe. */
1971 cancel_work_sync(&hid->led_work);
dde5845a 1972}
229695e5 1973EXPORT_SYMBOL_GPL(hidinput_disconnect);
Linux 6.x block layer and io_uring tree(s)