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Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux...
[linux-2.6-block.git] / drivers / hid / hid-input.c
CommitLineData
dde5845a 1/*
dde5845a 2 * Copyright (c) 2000-2001 Vojtech Pavlik
7d39e849 3 * Copyright (c) 2006-2010 Jiri Kosina
dde5845a
JK		 4 *
5 * HID to Linux Input mapping
6 */
7
8/*
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 *
23 * Should you need to contact me, the author, you can do so either by
24 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
25 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
26 */
27
28#include <linux/module.h>
29#include <linux/slab.h>
30#include <linux/kernel.h>
dde5845a 31
dde5845a 32#include <linux/hid.h>
c080d89a 33#include <linux/hid-debug.h>
dde5845a 34
bbc21cfd
JF		 35#include "hid-ids.h"
36
dde5845a
JK		 37#define unk KEY_UNKNOWN
38
39static const unsigned char hid_keyboard[256] = {
40 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
41 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3,
42 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26,
43 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
44 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
45 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
46 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
47 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
48 115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk,
437f3b19 49 122,123, 90, 91, 85,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,
dde5845a 50 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
1fe8736d 51 unk,unk,unk,unk,unk,unk,179,180,unk,unk,unk,unk,unk,unk,unk,unk,
dde5845a 52 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
437f3b19 53 unk,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,unk,unk,unk,unk,
dde5845a
JK		 54 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
55 150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk
56};
57
58static const struct {
59 __s32 x;
60 __s32 y;
61} hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
62
022e8c4d
JS		 63#define map_abs(c) hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c))
64#define map_rel(c) hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c))
65#define map_key(c) hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c))
66#define map_led(c) hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c))
dde5845a 67
022e8c4d
JS		 68#define map_abs_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \
69 &max, EV_ABS, (c))
70#define map_key_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \
71 &max, EV_KEY, (c))
dde5845a 72
a0bf0ea8
DT		 73static bool match_scancode(struct hid_usage *usage,
74 unsigned int cur_idx, unsigned int scancode)
fe7ba31f 75{
a0bf0ea8 76 return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode;
fe7ba31f
MR		 77}
78
a0bf0ea8
DT		 79static bool match_keycode(struct hid_usage *usage,
80 unsigned int cur_idx, unsigned int keycode)
fe7ba31f 81{
f5854fad
DT		 82 /*
83 * We should exclude unmapped usages when doing lookup by keycode.
84 */
85 return (usage->type == EV_KEY && usage->code == keycode);
a0bf0ea8 86}
58b93995 87
a0bf0ea8
DT		 88static bool match_index(struct hid_usage *usage,
89 unsigned int cur_idx, unsigned int idx)
90{
91 return cur_idx == idx;
fe7ba31f
MR		 92}
93
a0bf0ea8
DT		 94typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage,
95 unsigned int cur_idx, unsigned int val);
96
fe7ba31f 97static struct hid_usage *hidinput_find_key(struct hid_device *hid,
a0bf0ea8
DT		 98 hid_usage_cmp_t match,
99 unsigned int value,
100 unsigned int *usage_idx)
fe7ba31f 101{
a0bf0ea8 102 unsigned int i, j, k, cur_idx = 0;
fe7ba31f
MR		 103 struct hid_report *report;
104 struct hid_usage *usage;
105
106 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
107 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
108 for (i = 0; i < report->maxfield; i++) {
a0bf0ea8 109 for (j = 0; j < report->field[i]->maxusage; j++) {
fe7ba31f 110 usage = report->field[i]->usage + j;
f5854fad 111 if (usage->type == EV_KEY || usage->type == 0) {
a0bf0ea8
DT		 112 if (match(usage, cur_idx, value)) {
113 if (usage_idx)
114 *usage_idx = cur_idx;
115 return usage;
116 }
117 cur_idx++;
118 }
fe7ba31f
MR		 119 }
120 }
121 }
122 }
123 return NULL;
124}
125
a0bf0ea8
DT		 126static struct hid_usage *hidinput_locate_usage(struct hid_device *hid,
127 const struct input_keymap_entry *ke,
128 unsigned int *index)
129{
130 struct hid_usage *usage;
131 unsigned int scancode;
132
133 if (ke->flags & INPUT_KEYMAP_BY_INDEX)
134 usage = hidinput_find_key(hid, match_index, ke->index, index);
135 else if (input_scancode_to_scalar(ke, &scancode) == 0)
136 usage = hidinput_find_key(hid, match_scancode, scancode, index);
137 else
138 usage = NULL;
139
140 return usage;
141}
142
58b93995 143static int hidinput_getkeycode(struct input_dev *dev,
a0bf0ea8 144 struct input_keymap_entry *ke)
fe7ba31f 145{
f202df60 146 struct hid_device *hid = input_get_drvdata(dev);
fe7ba31f 147 struct hid_usage *usage;
a0bf0ea8 148 unsigned int scancode, index;
77b29662 149
a0bf0ea8 150 usage = hidinput_locate_usage(hid, ke, &index);
fe7ba31f 151 if (usage) {
f5854fad
DT		 152 ke->keycode = usage->type == EV_KEY ?
153 usage->code : KEY_RESERVED;
a0bf0ea8
DT		 154 ke->index = index;
155 scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE);
156 ke->len = sizeof(scancode);
157 memcpy(ke->scancode, &scancode, sizeof(scancode));
fe7ba31f
MR		 158 return 0;
159 }
a0bf0ea8 160
fe7ba31f
MR		 161 return -EINVAL;
162}
163
58b93995 164static int hidinput_setkeycode(struct input_dev *dev,
a0bf0ea8
DT		 165 const struct input_keymap_entry *ke,
166 unsigned int *old_keycode)
fe7ba31f 167{
f202df60 168 struct hid_device *hid = input_get_drvdata(dev);
fe7ba31f 169 struct hid_usage *usage;
77b29662 170
a0bf0ea8 171 usage = hidinput_locate_usage(hid, ke, NULL);
fe7ba31f 172 if (usage) {
f5854fad
DT		 173 *old_keycode = usage->type == EV_KEY ?
174 usage->code : KEY_RESERVED;
a0bf0ea8 175 usage->code = ke->keycode;
77b29662 176
a0bf0ea8 177 clear_bit(*old_keycode, dev->keybit);
fe7ba31f 178 set_bit(usage->code, dev->keybit);
587d1452 179 dbg_hid("Assigned keycode %d to HID usage code %x\n",
a0bf0ea8
DT		 180 usage->code, usage->hid);
181
182 /*
183 * Set the keybit for the old keycode if the old keycode is used
184 * by another key
185 */
186 if (hidinput_find_key(hid, match_keycode, *old_keycode, NULL))
187 set_bit(*old_keycode, dev->keybit);
77b29662 188
fe7ba31f
MR		 189 return 0;
190 }
77b29662 191
fe7ba31f
MR		 192 return -EINVAL;
193}
194
ad0e669b 195
4ea6e4ff
NK		 196/**
197 * hidinput_calc_abs_res - calculate an absolute axis resolution
198 * @field: the HID report field to calculate resolution for
199 * @code: axis code
200 *
201 * The formula is:
202 * (logical_maximum - logical_minimum)
203 * resolution = ----------------------------------------------------------
204 * (physical_maximum - physical_minimum) * 10 ^ unit_exponent
205 *
206 * as seen in the HID specification v1.11 6.2.2.7 Global Items.
207 *
83ed79c5
DT		 208 * Only exponent 1 length units are processed. Centimeters and inches are
209 * converted to millimeters. Degrees are converted to radians.
4ea6e4ff 210 */
37cf6e6f 211__s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
4ea6e4ff
NK		 212{
213 __s32 unit_exponent = field->unit_exponent;
214 __s32 logical_extents = field->logical_maximum -
215 field->logical_minimum;
216 __s32 physical_extents = field->physical_maximum -
217 field->physical_minimum;
218 __s32 prev;
219
220 /* Check if the extents are sane */
221 if (logical_extents <= 0 || physical_extents <= 0)
222 return 0;
223
224 /*
225 * Verify and convert units.
226 * See HID specification v1.11 6.2.2.7 Global Items for unit decoding
227 */
b73b2da0
NK		 228 switch (code) {
229 case ABS_X:
230 case ABS_Y:
231 case ABS_Z:
37cf6e6f
BT		 232 case ABS_MT_POSITION_X:
233 case ABS_MT_POSITION_Y:
234 case ABS_MT_TOOL_X:
235 case ABS_MT_TOOL_Y:
236 case ABS_MT_TOUCH_MAJOR:
237 case ABS_MT_TOUCH_MINOR:
ad0e669b 238 if (field->unit == 0x11) { /* If centimeters */
83ed79c5
DT		 239 /* Convert to millimeters */
240 unit_exponent += 1;
ad0e669b 241 } else if (field->unit == 0x13) { /* If inches */
83ed79c5
DT		 242 /* Convert to millimeters */
243 prev = physical_extents;
244 physical_extents *= 254;
245 if (physical_extents < prev)
4ea6e4ff 246 return 0;
83ed79c5 247 unit_exponent -= 1;
ad0e669b 248 } else {
4ea6e4ff
NK		 249 return 0;
250 }
b73b2da0
NK		 251 break;
252
253 case ABS_RX:
254 case ABS_RY:
255 case ABS_RZ:
c0bf5741 256 case ABS_WHEEL:
b73b2da0
NK		 257 case ABS_TILT_X:
258 case ABS_TILT_Y:
4ea6e4ff
NK		 259 if (field->unit == 0x14) { /* If degrees */
260 /* Convert to radians */
261 prev = logical_extents;
262 logical_extents *= 573;
263 if (logical_extents < prev)
264 return 0;
265 unit_exponent += 1;
266 } else if (field->unit != 0x12) { /* If not radians */
267 return 0;
268 }
b73b2da0
NK		 269 break;
270
271 default:
4ea6e4ff
NK		 272 return 0;
273 }
274
275 /* Apply negative unit exponent */
276 for (; unit_exponent < 0; unit_exponent++) {
277 prev = logical_extents;
278 logical_extents *= 10;
279 if (logical_extents < prev)
280 return 0;
281 }
282 /* Apply positive unit exponent */
283 for (; unit_exponent > 0; unit_exponent--) {
284 prev = physical_extents;
285 physical_extents *= 10;
286 if (physical_extents < prev)
287 return 0;
288 }
289
290 /* Calculate resolution */
ccdd6994 291 return DIV_ROUND_CLOSEST(logical_extents, physical_extents);
4ea6e4ff 292}
37cf6e6f 293EXPORT_SYMBOL_GPL(hidinput_calc_abs_res);
4ea6e4ff 294
4f5ca836
JF		 295#ifdef CONFIG_HID_BATTERY_STRENGTH
296static enum power_supply_property hidinput_battery_props[] = {
297 POWER_SUPPLY_PROP_PRESENT,
298 POWER_SUPPLY_PROP_ONLINE,
299 POWER_SUPPLY_PROP_CAPACITY,
300 POWER_SUPPLY_PROP_MODEL_NAME,
45d9c273
JF		 301 POWER_SUPPLY_PROP_STATUS,
302 POWER_SUPPLY_PROP_SCOPE,
4f5ca836
JF		 303};
304
bbc21cfd 305#define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */
652aa6a9 306#define HID_BATTERY_QUIRK_FEATURE (1 << 1) /* ask for feature report */
5d9374cf 307#define HID_BATTERY_QUIRK_IGNORE (1 << 2) /* completely ignore the battery */
bbc21cfd
JF		 308
309static const struct hid_device_id hid_battery_quirks[] = {
4cc85417 310 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
cbd366be
RS		 311 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO),
312 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
313 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
314 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI),
315 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
652aa6a9 316 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
cbd366be 317 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI),
652aa6a9 318 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
da940db4
KR		 319 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
320 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO),
321 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
0c47935c
DN		 322 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
323 USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI),
324 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
5d9374cf
AP		 325 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM,
326 USB_DEVICE_ID_ELECOM_BM084),
327 HID_BATTERY_QUIRK_IGNORE },
0fd79184
BL		 328 { HID_USB_DEVICE(USB_VENDOR_ID_SYMBOL,
329 USB_DEVICE_ID_SYMBOL_SCANNER_3),
330 HID_BATTERY_QUIRK_IGNORE },
bbc21cfd
JF		 331 {}
332};
333
334static unsigned find_battery_quirk(struct hid_device *hdev)
335{
336 unsigned quirks = 0;
337 const struct hid_device_id *match;
338
339 match = hid_match_id(hdev, hid_battery_quirks);
340 if (match != NULL)
341 quirks = match->driver_data;
342
343 return quirks;
344}
345
581c4484
DT		 346static int hidinput_scale_battery_capacity(struct hid_device *dev,
347 int value)
348{
349 if (dev->battery_min < dev->battery_max &&
350 value >= dev->battery_min && value <= dev->battery_max)
351 value = ((value - dev->battery_min) * 100) /
352 (dev->battery_max - dev->battery_min);
353
354 return value;
355}
356
357static int hidinput_query_battery_capacity(struct hid_device *dev)
358{
359 u8 *buf;
360 int ret;
361
362 buf = kmalloc(2, GFP_KERNEL);
363 if (!buf)
364 return -ENOMEM;
365
366 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 2,
367 dev->battery_report_type, HID_REQ_GET_REPORT);
368 if (ret != 2) {
369 kfree(buf);
370 return -ENODATA;
371 }
372
373 ret = hidinput_scale_battery_capacity(dev, buf[1]);
374 kfree(buf);
375 return ret;
376}
377
4f5ca836
JF		 378static int hidinput_get_battery_property(struct power_supply *psy,
379 enum power_supply_property prop,
380 union power_supply_propval *val)
381{
297d716f 382 struct hid_device *dev = power_supply_get_drvdata(psy);
581c4484 383 int value;
4f5ca836
JF		 384 int ret = 0;
385
386 switch (prop) {
387 case POWER_SUPPLY_PROP_PRESENT:
388 case POWER_SUPPLY_PROP_ONLINE:
389 val->intval = 1;
390 break;
391
392 case POWER_SUPPLY_PROP_CAPACITY:
2e210bbb
DT		 393 if (dev->battery_status != HID_BATTERY_REPORTED &&
394 !dev->battery_avoid_query) {
581c4484
DT		 395 value = hidinput_query_battery_capacity(dev);
396 if (value < 0)
397 return value;
398 } else {
399 value = dev->battery_capacity;
c5a92aa3
DN		 400 }
401
581c4484 402 val->intval = value;
4f5ca836
JF		 403 break;
404
405 case POWER_SUPPLY_PROP_MODEL_NAME:
406 val->strval = dev->name;
407 break;
408
c5a92aa3 409 case POWER_SUPPLY_PROP_STATUS:
2e210bbb
DT		 410 if (dev->battery_status != HID_BATTERY_REPORTED &&
411 !dev->battery_avoid_query) {
581c4484
DT		 412 value = hidinput_query_battery_capacity(dev);
413 if (value < 0)
414 return value;
415
416 dev->battery_capacity = value;
2e210bbb 417 dev->battery_status = HID_BATTERY_QUERIED;
581c4484
DT		 418 }
419
2e210bbb 420 if (dev->battery_status == HID_BATTERY_UNKNOWN)
581c4484
DT		 421 val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
422 else if (dev->battery_capacity == 100)
423 val->intval = POWER_SUPPLY_STATUS_FULL;
424 else
425 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
c5a92aa3
DN		 426 break;
427
45d9c273
JF		 428 case POWER_SUPPLY_PROP_SCOPE:
429 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
430 break;
431
4f5ca836
JF		 432 default:
433 ret = -EINVAL;
434 break;
435 }
436
437 return ret;
438}
439
581c4484 440static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field)
4f5ca836 441{
581c4484 442 struct power_supply_desc *psy_desc;
297d716f 443 struct power_supply_config psy_cfg = { .drv_data = dev, };
bbc21cfd 444 unsigned quirks;
2f2e3f6d 445 s32 min, max;
581c4484 446 int error;
2f2e3f6d 447
581c4484
DT		 448 if (dev->battery)
449 return 0; /* already initialized? */
4f5ca836 450
5d9374cf
AP		 451 quirks = find_battery_quirk(dev);
452
453 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
454 dev->bus, dev->vendor, dev->product, dev->version, quirks);
455
456 if (quirks & HID_BATTERY_QUIRK_IGNORE)
581c4484 457 return 0;
5d9374cf 458
297d716f 459 psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL);
581c4484
DT		 460 if (!psy_desc)
461 return -ENOMEM;
4f5ca836 462
09223865
DT		 463 psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery",
464 strlen(dev->uniq) ?
465 dev->uniq : dev_name(&dev->dev));
581c4484
DT		 466 if (!psy_desc->name) {
467 error = -ENOMEM;
468 goto err_free_mem;
297d716f
KK		 469 }
470
471 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY;
472 psy_desc->properties = hidinput_battery_props;
473 psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props);
474 psy_desc->use_for_apm = 0;
475 psy_desc->get_property = hidinput_get_battery_property;
4f5ca836 476
2f2e3f6d
JF		 477 min = field->logical_minimum;
478 max = field->logical_maximum;
479
bbc21cfd
JF		 480 if (quirks & HID_BATTERY_QUIRK_PERCENT) {
481 min = 0;
482 max = 100;
483 }
484
652aa6a9
JF		 485 if (quirks & HID_BATTERY_QUIRK_FEATURE)
486 report_type = HID_FEATURE_REPORT;
487
4f5ca836
JF		 488 dev->battery_min = min;
489 dev->battery_max = max;
fb8ac91b 490 dev->battery_report_type = report_type;
2f2e3f6d 491 dev->battery_report_id = field->report->id;
4f5ca836 492
2e210bbb
DT		 493 /*
494 * Stylus is normally not connected to the device and thus we
495 * can't query the device and get meaningful battery strength.
496 * We have to wait for the device to report it on its own.
497 */
498 dev->battery_avoid_query = report_type == HID_INPUT_REPORT &&
499 field->physical == HID_DG_STYLUS;
500
297d716f
KK		 501 dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg);
502 if (IS_ERR(dev->battery)) {
581c4484
DT		 503 error = PTR_ERR(dev->battery);
504 hid_warn(dev, "can't register power supply: %d\n", error);
505 goto err_free_name;
4f5ca836 506 }
2f2e3f6d 507
581c4484
DT		 508 power_supply_powers(dev->battery, &dev->dev);
509 return 0;
510
511err_free_name:
512 kfree(psy_desc->name);
513err_free_mem:
514 kfree(psy_desc);
515 dev->battery = NULL;
516 return error;
4f5ca836
JF		 517}
518
519static void hidinput_cleanup_battery(struct hid_device *dev)
520{
0621809e
KK		 521 const struct power_supply_desc *psy_desc;
522
297d716f 523 if (!dev->battery)
4f5ca836
JF		 524 return;
525
0621809e 526 psy_desc = dev->battery->desc;
297d716f 527 power_supply_unregister(dev->battery);
0621809e
KK		 528 kfree(psy_desc->name);
529 kfree(psy_desc);
297d716f 530 dev->battery = NULL;
4f5ca836 531}
581c4484
DT		 532
533static void hidinput_update_battery(struct hid_device *dev, int value)
534{
0152b29c
DT		 535 int capacity;
536
581c4484
DT		 537 if (!dev->battery)
538 return;
539
540 if (value == 0 || value < dev->battery_min || value > dev->battery_max)
541 return;
542
0152b29c
DT		 543 capacity = hidinput_scale_battery_capacity(dev, value);
544
2e210bbb
DT		 545 if (dev->battery_status != HID_BATTERY_REPORTED ||
546 capacity != dev->battery_capacity) {
0152b29c 547 dev->battery_capacity = capacity;
2e210bbb 548 dev->battery_status = HID_BATTERY_REPORTED;
0152b29c
DT		 549 power_supply_changed(dev->battery);
550 }
581c4484 551}
4f5ca836 552#else /* !CONFIG_HID_BATTERY_STRENGTH */
581c4484
DT		 553static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
554 struct hid_field *field)
4f5ca836 555{
581c4484 556 return 0;
4f5ca836
JF		 557}
558
559static void hidinput_cleanup_battery(struct hid_device *dev)
560{
561}
581c4484
DT		 562
563static void hidinput_update_battery(struct hid_device *dev, int value)
564{
565}
4f5ca836
JF		 566#endif /* CONFIG_HID_BATTERY_STRENGTH */
567
dde5845a
JK		 568static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
569 struct hid_usage *usage)
570{
571 struct input_dev *input = hidinput->input;
e0712985 572 struct hid_device *device = input_get_drvdata(input);
3715ade9 573 int max = 0, code;
dde5845a
JK		 574 unsigned long *bit = NULL;
575
576 field->hidinput = hidinput;
577
dde5845a
JK		 578 if (field->flags & HID_MAIN_ITEM_CONSTANT)
579 goto ignore;
580
cc6b54aa
BT		 581 /* Ignore if report count is out of bounds. */
582 if (field->report_count < 1)
583 goto ignore;
584
82eb1219
JK		 585 /* only LED usages are supported in output fields */
586 if (field->report_type == HID_OUTPUT_REPORT &&
587 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
82eb1219
JK		 588 goto ignore;
589 }
590
c500c971
JS		 591 if (device->driver->input_mapping) {
592 int ret = device->driver->input_mapping(device, hidinput, field,
593 usage, &bit, &max);
594 if (ret > 0)
595 goto mapped;
596 if (ret < 0)
597 goto ignore;
598 }
599
dde5845a 600 switch (usage->hid & HID_USAGE_PAGE) {
880d29f1
JS		 601 case HID_UP_UNDEFINED:
602 goto ignore;
dde5845a 603
880d29f1
JS		 604 case HID_UP_KEYBOARD:
605 set_bit(EV_REP, input->evbit);
dde5845a 606
880d29f1
JS		 607 if ((usage->hid & HID_USAGE) < 256) {
608 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
609 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
610 } else
611 map_key(KEY_UNKNOWN);
dde5845a 612
880d29f1 613 break;
dde5845a 614
880d29f1 615 case HID_UP_BUTTON:
7f978b9b 616 code = ((usage->hid - 1) & HID_USAGE);
dde5845a 617
880d29f1
JS		 618 switch (field->application) {
619 case HID_GD_MOUSE:
1874542d 620 case HID_GD_POINTER: code += BTN_MOUSE; break;
cf2f765f 621 case HID_GD_JOYSTICK:
fc99f22c
DM		 622 if (code <= 0xf)
623 code += BTN_JOYSTICK;
624 else
f8e86d05
IR		 625 code += BTN_TRIGGER_HAPPY - 0x10;
626 break;
627 case HID_GD_GAMEPAD:
628 if (code <= 0xf)
629 code += BTN_GAMEPAD;
630 else
631 code += BTN_TRIGGER_HAPPY - 0x10;
fc99f22c 632 break;
880d29f1
JS		 633 default:
634 switch (field->physical) {
635 case HID_GD_MOUSE:
1874542d
FF		 636 case HID_GD_POINTER: code += BTN_MOUSE; break;
637 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
638 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break;
639 default: code += BTN_MISC;
dde5845a 640 }
880d29f1 641 }
dde5845a 642
880d29f1
JS		 643 map_key(code);
644 break;
645
646 case HID_UP_SIMULATION:
647 switch (usage->hid & 0xffff) {
648 case 0xba: map_abs(ABS_RUDDER); break;
649 case 0xbb: map_abs(ABS_THROTTLE); break;
650 case 0xc4: map_abs(ABS_GAS); break;
651 case 0xc5: map_abs(ABS_BRAKE); break;
652 case 0xc8: map_abs(ABS_WHEEL); break;
653 default: goto ignore;
654 }
655 break;
656
657 case HID_UP_GENDESK:
658 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
659 switch (usage->hid & 0xf) {
660 case 0x1: map_key_clear(KEY_POWER); break;
661 case 0x2: map_key_clear(KEY_SLEEP); break;
662 case 0x3: map_key_clear(KEY_WAKEUP); break;
437f3b19
JW		 663 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
664 case 0x5: map_key_clear(KEY_MENU); break;
665 case 0x6: map_key_clear(KEY_PROG1); break;
666 case 0x7: map_key_clear(KEY_HELP); break;
667 case 0x8: map_key_clear(KEY_EXIT); break;
668 case 0x9: map_key_clear(KEY_SELECT); break;
669 case 0xa: map_key_clear(KEY_RIGHT); break;
670 case 0xb: map_key_clear(KEY_LEFT); break;
671 case 0xc: map_key_clear(KEY_UP); break;
672 case 0xd: map_key_clear(KEY_DOWN); break;
673 case 0xe: map_key_clear(KEY_POWER2); break;
674 case 0xf: map_key_clear(KEY_RESTART); break;
880d29f1 675 default: goto unknown;
dde5845a
JK		 676 }
677 break;
880d29f1 678 }
dde5845a 679
1989dada
BT		 680 /*
681 * Some lazy vendors declare 255 usages for System Control,
682 * leading to the creation of ABS_X|Y axis and too many others.
683 * It wouldn't be a problem if joydev doesn't consider the
684 * device as a joystick then.
685 */
686 if (field->application == HID_GD_SYSTEM_CONTROL)
687 goto ignore;
688
880d29f1 689 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */
dde5845a 690 switch (usage->hid) {
880d29f1
JS		 691 case HID_GD_UP: usage->hat_dir = 1; break;
692 case HID_GD_DOWN: usage->hat_dir = 5; break;
693 case HID_GD_RIGHT: usage->hat_dir = 3; break;
694 case HID_GD_LEFT: usage->hat_dir = 7; break;
695 default: goto unknown;
dde5845a 696 }
880d29f1
JS		 697 if (field->dpad) {
698 map_abs(field->dpad);
699 goto ignore;
d4ae650a 700 }
880d29f1 701 map_abs(ABS_HAT0X);
dde5845a 702 break;
880d29f1 703 }
dde5845a 704
880d29f1
JS		 705 switch (usage->hid) {
706 /* These usage IDs map directly to the usage codes. */
707 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
708 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
79346d62
BT		 709 if (field->flags & HID_MAIN_ITEM_RELATIVE)
710 map_rel(usage->hid & 0xf);
711 else
712 map_abs_clear(usage->hid & 0xf);
713 break;
714
2dc702c9
PH		 715 case HID_GD_WHEEL:
716 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
717 set_bit(REL_WHEEL, input->relbit);
718 map_rel(REL_WHEEL_HI_RES);
719 } else {
720 map_abs(usage->hid & 0xf);
721 }
722 break;
723 case HID_GD_SLIDER: case HID_GD_DIAL:
880d29f1
JS		 724 if (field->flags & HID_MAIN_ITEM_RELATIVE)
725 map_rel(usage->hid & 0xf);
726 else
727 map_abs(usage->hid & 0xf);
728 break;
dde5845a 729
880d29f1
JS		 730 case HID_GD_HATSWITCH:
731 usage->hat_min = field->logical_minimum;
732 usage->hat_max = field->logical_maximum;
733 map_abs(ABS_HAT0X);
734 break;
dde5845a 735
880d29f1
JS		 736 case HID_GD_START: map_key_clear(BTN_START); break;
737 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
dde5845a 738
61df56be
HG		 739 case HID_GD_RFKILL_BTN:
740 /* MS wireless radio ctl extension, also check CA */
6e7edabf 741 if (field->application == HID_GD_WIRELESS_RADIO_CTLS) {
61df56be
HG		 742 map_key_clear(KEY_RFKILL);
743 /* We need to simulate the btn release */
744 field->flags |= HID_MAIN_ITEM_RELATIVE;
745 break;
746 }
747
880d29f1
JS		 748 default: goto unknown;
749 }
dde5845a 750
880d29f1
JS		 751 break;
752
753 case HID_UP_LED:
754 switch (usage->hid & 0xffff) { /* HID-Value: */
755 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */
756 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */
757 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */
758 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */
759 case 0x05: map_led (LED_KANA); break; /* "Kana" */
760 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */
761 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */
762 case 0x09: map_led (LED_MUTE); break; /* "Mute" */
763 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */
764 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */
765 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */
766
767 default: goto ignore;
768 }
769 break;
770
771 case HID_UP_DIGITIZER:
8473a93d
TT		 772 if ((field->application & 0xff) == 0x01) /* Digitizer */
773 __set_bit(INPUT_PROP_POINTER, input->propbit);
774 else if ((field->application & 0xff) == 0x02) /* Pen */
775 __set_bit(INPUT_PROP_DIRECT, input->propbit);
776
880d29f1 777 switch (usage->hid & 0xff) {
8c8b01c3
FB		 778 case 0x00: /* Undefined */
779 goto ignore;
780
880d29f1
JS		 781 case 0x30: /* TipPressure */
782 if (!test_bit(BTN_TOUCH, input->keybit)) {
783 device->quirks |= HID_QUIRK_NOTOUCH;
784 set_bit(EV_KEY, input->evbit);
785 set_bit(BTN_TOUCH, input->keybit);
dde5845a 786 }
880d29f1 787 map_abs_clear(ABS_PRESSURE);
dde5845a
JK		 788 break;
789
880d29f1
JS		 790 case 0x32: /* InRange */
791 switch (field->physical & 0xff) {
792 case 0x21: map_key(BTN_TOOL_MOUSE); break;
793 case 0x22: map_key(BTN_TOOL_FINGER); break;
794 default: map_key(BTN_TOOL_PEN); break;
dde5845a
JK		 795 }
796 break;
797
581c4484
DT		 798 case 0x3b: /* Battery Strength */
799 hidinput_setup_battery(device, HID_INPUT_REPORT, field);
800 usage->type = EV_PWR;
801 goto ignore;
802
880d29f1
JS		 803 case 0x3c: /* Invert */
804 map_key_clear(BTN_TOOL_RUBBER);
dde5845a
JK		 805 break;
806
b73b2da0
NK		 807 case 0x3d: /* X Tilt */
808 map_abs_clear(ABS_TILT_X);
809 break;
810
811 case 0x3e: /* Y Tilt */
812 map_abs_clear(ABS_TILT_Y);
813 break;
814
880d29f1
JS		 815 case 0x33: /* Touch */
816 case 0x42: /* TipSwitch */
817 case 0x43: /* TipSwitch2 */
818 device->quirks &= ~HID_QUIRK_NOTOUCH;
819 map_key_clear(BTN_TOUCH);
820 break;
dde5845a 821
880d29f1
JS		 822 case 0x44: /* BarrelSwitch */
823 map_key_clear(BTN_STYLUS);
824 break;
dde5845a 825
654c192a
PC		 826 case 0x45: /* ERASER */
827 /*
828 * This event is reported when eraser tip touches the surface.
829 * Actual eraser (BTN_TOOL_RUBBER) is set by Invert usage when
830 * tool gets in proximity.
831 */
832 map_key_clear(BTN_TOUCH);
833 break;
834
50b63697 835 case 0x46: /* TabletPick */
368c9664 836 case 0x5a: /* SecondaryBarrelSwitch */
50b63697
NK		 837 map_key_clear(BTN_STYLUS2);
838 break;
839
368c9664 840 case 0x5b: /* TransducerSerialNumber */
5989a55a
JG		 841 usage->type = EV_MSC;
842 usage->code = MSC_SERIAL;
843 bit = input->mscbit;
844 max = MSC_MAX;
368c9664
PC		 845 break;
846
880d29f1
JS		 847 default: goto unknown;
848 }
849 break;
850
f3dddf24
DT		 851 case HID_UP_TELEPHONY:
852 switch (usage->hid & HID_USAGE) {
853 case 0x2f: map_key_clear(KEY_MICMUTE); break;
854 case 0xb0: map_key_clear(KEY_NUMERIC_0); break;
855 case 0xb1: map_key_clear(KEY_NUMERIC_1); break;
856 case 0xb2: map_key_clear(KEY_NUMERIC_2); break;
857 case 0xb3: map_key_clear(KEY_NUMERIC_3); break;
858 case 0xb4: map_key_clear(KEY_NUMERIC_4); break;
859 case 0xb5: map_key_clear(KEY_NUMERIC_5); break;
860 case 0xb6: map_key_clear(KEY_NUMERIC_6); break;
861 case 0xb7: map_key_clear(KEY_NUMERIC_7); break;
862 case 0xb8: map_key_clear(KEY_NUMERIC_8); break;
863 case 0xb9: map_key_clear(KEY_NUMERIC_9); break;
864 case 0xba: map_key_clear(KEY_NUMERIC_STAR); break;
865 case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break;
866 case 0xbc: map_key_clear(KEY_NUMERIC_A); break;
867 case 0xbd: map_key_clear(KEY_NUMERIC_B); break;
868 case 0xbe: map_key_clear(KEY_NUMERIC_C); break;
869 case 0xbf: map_key_clear(KEY_NUMERIC_D); break;
870 default: goto ignore;
871 }
872 break;
873
437f3b19 874 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */
880d29f1
JS		 875 switch (usage->hid & HID_USAGE) {
876 case 0x000: goto ignore;
437f3b19
JW		 877 case 0x030: map_key_clear(KEY_POWER); break;
878 case 0x031: map_key_clear(KEY_RESTART); break;
879 case 0x032: map_key_clear(KEY_SLEEP); break;
880d29f1 880 case 0x034: map_key_clear(KEY_SLEEP); break;
437f3b19 881 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break;
880d29f1
JS		 882 case 0x036: map_key_clear(BTN_MISC); break;
883
437f3b19
JW		 884 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */
885 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */
886 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */
887 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */
888 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */
889 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */
890 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */
891 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */
892 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */
893
894 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */
895 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */
896 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */
897 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */
898 case 0x069: map_key_clear(KEY_RED); break;
899 case 0x06a: map_key_clear(KEY_GREEN); break;
900 case 0x06b: map_key_clear(KEY_BLUE); break;
901 case 0x06c: map_key_clear(KEY_YELLOW); break;
902 case 0x06d: map_key_clear(KEY_ZOOM); break;
903
f362e690
OG		 904 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break;
905 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break;
906 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break;
907 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break;
908 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break;
909 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break;
910
437f3b19 911 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break;
880d29f1 912 case 0x083: map_key_clear(KEY_LAST); break;
437f3b19 913 case 0x084: map_key_clear(KEY_ENTER); break;
880d29f1
JS		 914 case 0x088: map_key_clear(KEY_PC); break;
915 case 0x089: map_key_clear(KEY_TV); break;
916 case 0x08a: map_key_clear(KEY_WWW); break;
917 case 0x08b: map_key_clear(KEY_DVD); break;
918 case 0x08c: map_key_clear(KEY_PHONE); break;
919 case 0x08d: map_key_clear(KEY_PROGRAM); break;
920 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break;
921 case 0x08f: map_key_clear(KEY_GAMES); break;
922 case 0x090: map_key_clear(KEY_MEMO); break;
923 case 0x091: map_key_clear(KEY_CD); break;
924 case 0x092: map_key_clear(KEY_VCR); break;
925 case 0x093: map_key_clear(KEY_TUNER); break;
926 case 0x094: map_key_clear(KEY_EXIT); break;
927 case 0x095: map_key_clear(KEY_HELP); break;
928 case 0x096: map_key_clear(KEY_TAPE); break;
929 case 0x097: map_key_clear(KEY_TV2); break;
930 case 0x098: map_key_clear(KEY_SAT); break;
931 case 0x09a: map_key_clear(KEY_PVR); break;
932
933 case 0x09c: map_key_clear(KEY_CHANNELUP); break;
934 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
935 case 0x0a0: map_key_clear(KEY_VCR2); break;
936
937 case 0x0b0: map_key_clear(KEY_PLAY); break;
938 case 0x0b1: map_key_clear(KEY_PAUSE); break;
939 case 0x0b2: map_key_clear(KEY_RECORD); break;
940 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
941 case 0x0b4: map_key_clear(KEY_REWIND); break;
942 case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
943 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
944 case 0x0b7: map_key_clear(KEY_STOPCD); break;
945 case 0x0b8: map_key_clear(KEY_EJECTCD); break;
946 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break;
437f3b19
JW		 947 case 0x0b9: map_key_clear(KEY_SHUFFLE); break;
948 case 0x0bf: map_key_clear(KEY_SLOW); break;
880d29f1
JS		 949
950 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
f362e690 951 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break;
880d29f1
JS		 952 case 0x0e0: map_abs_clear(ABS_VOLUME); break;
953 case 0x0e2: map_key_clear(KEY_MUTE); break;
954 case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
955 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
956 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
437f3b19 957 case 0x0f5: map_key_clear(KEY_SLOW); break;
880d29f1 958
f362e690 959 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break;
880d29f1
JS		 960 case 0x182: map_key_clear(KEY_BOOKMARKS); break;
961 case 0x183: map_key_clear(KEY_CONFIG); break;
962 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break;
963 case 0x185: map_key_clear(KEY_EDITOR); break;
964 case 0x186: map_key_clear(KEY_SPREADSHEET); break;
965 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break;
966 case 0x188: map_key_clear(KEY_PRESENTATION); break;
967 case 0x189: map_key_clear(KEY_DATABASE); break;
968 case 0x18a: map_key_clear(KEY_MAIL); break;
969 case 0x18b: map_key_clear(KEY_NEWS); break;
970 case 0x18c: map_key_clear(KEY_VOICEMAIL); break;
971 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break;
972 case 0x18e: map_key_clear(KEY_CALENDAR); break;
f362e690
OG		 973 case 0x18f: map_key_clear(KEY_TASKMANAGER); break;
974 case 0x190: map_key_clear(KEY_JOURNAL); break;
880d29f1
JS		 975 case 0x191: map_key_clear(KEY_FINANCE); break;
976 case 0x192: map_key_clear(KEY_CALC); break;
437f3b19 977 case 0x193: map_key_clear(KEY_PLAYER); break;
880d29f1
JS		 978 case 0x194: map_key_clear(KEY_FILE); break;
979 case 0x196: map_key_clear(KEY_WWW); break;
0690535d 980 case 0x199: map_key_clear(KEY_CHAT); break;
880d29f1
JS		 981 case 0x19c: map_key_clear(KEY_LOGOFF); break;
982 case 0x19e: map_key_clear(KEY_COFFEE); break;
f362e690
OG		 983 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break;
984 case 0x1a2: map_key_clear(KEY_APPSELECT); break;
5820e4d4
HG		 985 case 0x1a3: map_key_clear(KEY_NEXT); break;
986 case 0x1a4: map_key_clear(KEY_PREVIOUS); break;
880d29f1
JS		 987 case 0x1a6: map_key_clear(KEY_HELP); break;
988 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
989 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break;
437f3b19 990 case 0x1ae: map_key_clear(KEY_KEYBOARD); break;
f362e690 991 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break;
5820e4d4 992 case 0x1b4: map_key_clear(KEY_FILE); break;
437f3b19
JW		 993 case 0x1b6: map_key_clear(KEY_IMAGES); break;
994 case 0x1b7: map_key_clear(KEY_AUDIO); break;
995 case 0x1b8: map_key_clear(KEY_VIDEO); break;
880d29f1
JS		 996 case 0x1bc: map_key_clear(KEY_MESSENGER); break;
997 case 0x1bd: map_key_clear(KEY_INFO); break;
998 case 0x201: map_key_clear(KEY_NEW); break;
999 case 0x202: map_key_clear(KEY_OPEN); break;
1000 case 0x203: map_key_clear(KEY_CLOSE); break;
1001 case 0x204: map_key_clear(KEY_EXIT); break;
1002 case 0x207: map_key_clear(KEY_SAVE); break;
1003 case 0x208: map_key_clear(KEY_PRINT); break;
1004 case 0x209: map_key_clear(KEY_PROPS); break;
1005 case 0x21a: map_key_clear(KEY_UNDO); break;
1006 case 0x21b: map_key_clear(KEY_COPY); break;
1007 case 0x21c: map_key_clear(KEY_CUT); break;
1008 case 0x21d: map_key_clear(KEY_PASTE); break;
1009 case 0x21f: map_key_clear(KEY_FIND); break;
1010 case 0x221: map_key_clear(KEY_SEARCH); break;
1011 case 0x222: map_key_clear(KEY_GOTO); break;
1012 case 0x223: map_key_clear(KEY_HOMEPAGE); break;
1013 case 0x224: map_key_clear(KEY_BACK); break;
1014 case 0x225: map_key_clear(KEY_FORWARD); break;
1015 case 0x226: map_key_clear(KEY_STOP); break;
1016 case 0x227: map_key_clear(KEY_REFRESH); break;
1017 case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
1018 case 0x22d: map_key_clear(KEY_ZOOMIN); break;
1019 case 0x22e: map_key_clear(KEY_ZOOMOUT); break;
1020 case 0x22f: map_key_clear(KEY_ZOOMRESET); break;
1021 case 0x233: map_key_clear(KEY_SCROLLUP); break;
1022 case 0x234: map_key_clear(KEY_SCROLLDOWN); break;
2dc702c9
PH		 1023 case 0x238: /* AC Pan */
1024 set_bit(REL_HWHEEL, input->relbit);
1025 map_rel(REL_HWHEEL_HI_RES);
1026 break;
437f3b19 1027 case 0x23d: map_key_clear(KEY_EDIT); break;
880d29f1 1028 case 0x25f: map_key_clear(KEY_CANCEL); break;
437f3b19
JW		 1029 case 0x269: map_key_clear(KEY_INSERT); break;
1030 case 0x26a: map_key_clear(KEY_DELETE); break;
880d29f1
JS		 1031 case 0x279: map_key_clear(KEY_REDO); break;
1032
1033 case 0x289: map_key_clear(KEY_REPLY); break;
1034 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
1035 case 0x28c: map_key_clear(KEY_SEND); break;
1036
f974008f
OG		 1037 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break;
1038 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break;
1039 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break;
1040 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break;
1041 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break;
1042 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break;
1043
afdb5cce 1044 default: map_key_clear(KEY_UNKNOWN);
880d29f1
JS		 1045 }
1046 break;
1047
4f5ca836 1048 case HID_UP_GENDEVCTRLS:
581c4484
DT		 1049 switch (usage->hid) {
1050 case HID_DC_BATTERYSTRENGTH:
1051 hidinput_setup_battery(device, HID_INPUT_REPORT, field);
1052 usage->type = EV_PWR;
4f5ca836 1053 goto ignore;
581c4484
DT		 1054 }
1055 goto unknown;
4f5ca836 1056
880d29f1
JS		 1057 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
1058 set_bit(EV_REP, input->evbit);
1059 switch (usage->hid & HID_USAGE) {
1060 case 0x021: map_key_clear(KEY_PRINT); break;
1061 case 0x070: map_key_clear(KEY_HP); break;
1062 case 0x071: map_key_clear(KEY_CAMERA); break;
1063 case 0x072: map_key_clear(KEY_SOUND); break;
1064 case 0x073: map_key_clear(KEY_QUESTION); break;
1065 case 0x080: map_key_clear(KEY_EMAIL); break;
1066 case 0x081: map_key_clear(KEY_CHAT); break;
1067 case 0x082: map_key_clear(KEY_SEARCH); break;
1068 case 0x083: map_key_clear(KEY_CONNECT); break;
1069 case 0x084: map_key_clear(KEY_FINANCE); break;
1070 case 0x085: map_key_clear(KEY_SPORT); break;
1071 case 0x086: map_key_clear(KEY_SHOP); break;
929578ab
KYL		 1072 default: goto ignore;
1073 }
1074 break;
1075
1076 case HID_UP_HPVENDOR2:
1077 set_bit(EV_REP, input->evbit);
1078 switch (usage->hid & HID_USAGE) {
08fc9473 1079 case 0x001: map_key_clear(KEY_MICMUTE); break;
929578ab
KYL		 1080 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break;
1081 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break;
880d29f1
JS		 1082 default: goto ignore;
1083 }
1084 break;
dde5845a 1085
880d29f1
JS		 1086 case HID_UP_MSVENDOR:
1087 goto ignore;
dde5845a 1088
880d29f1
JS		 1089 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
1090 set_bit(EV_REP, input->evbit);
1091 goto ignore;
dde5845a 1092
880d29f1 1093 case HID_UP_LOGIVENDOR:
b466c1dd
SW		 1094 /* intentional fallback */
1095 case HID_UP_LOGIVENDOR2:
1096 /* intentional fallback */
1097 case HID_UP_LOGIVENDOR3:
880d29f1 1098 goto ignore;
fc99f22c 1099
880d29f1
JS		 1100 case HID_UP_PID:
1101 switch (usage->hid & HID_USAGE) {
1102 case 0xa4: map_key_clear(BTN_DEAD); break;
1103 default: goto ignore;
1104 }
1105 break;
dde5845a 1106
880d29f1
JS		 1107 default:
1108 unknown:
1109 if (field->report_size == 1) {
1110 if (field->report->type == HID_OUTPUT_REPORT) {
1111 map_led(LED_MISC);
dde5845a
JK		 1112 break;
1113 }
880d29f1 1114 map_key(BTN_MISC);
dde5845a 1115 break;
880d29f1
JS		 1116 }
1117 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
1118 map_rel(REL_MISC);
1119 break;
1120 }
1121 map_abs(ABS_MISC);
1122 break;
dde5845a
JK		 1123 }
1124
10bd065f 1125mapped:
c500c971
JS		 1126 if (device->driver->input_mapped && device->driver->input_mapped(device,
1127 hidinput, field, usage, &bit, &max) < 0)
1128 goto ignore;
1129
dde5845a
JK		 1130 set_bit(usage->type, input->evbit);
1131
190d7f02
BT		 1132 /*
1133 * This part is *really* controversial:
1134 * - HID aims at being generic so we should do our best to export
1135 * all incoming events
1136 * - HID describes what events are, so there is no reason for ABS_X
1137 * to be mapped to ABS_Y
1138 * - HID is using *_MISC+N as a default value, but nothing prevents
1139 * *_MISC+N to overwrite a legitimate even, which confuses userspace
1140 * (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different
1141 * processing)
1142 *
1143 * If devices still want to use this (at their own risk), they will
1144 * have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but
1145 * the default should be a reliable mapping.
1146 */
1147 while (usage->code <= max && test_and_set_bit(usage->code, bit)) {
1148 if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) {
1149 usage->code = find_next_zero_bit(bit,
1150 max + 1,
1151 usage->code);
1152 } else {
1153 device->status |= HID_STAT_DUP_DETECTED;
1154 goto ignore;
1155 }
1156 }
dde5845a
JK		 1157
1158 if (usage->code > max)
1159 goto ignore;
1160
dde5845a
JK		 1161 if (usage->type == EV_ABS) {
1162
1163 int a = field->logical_minimum;
1164 int b = field->logical_maximum;
1165
1166 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
1167 a = field->logical_minimum = 0;
1168 b = field->logical_maximum = 255;
1169 }
1170
1171 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
1172 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
1173 else input_set_abs_params(input, usage->code, a, b, 0, 0);
1174
4ea6e4ff
NK		 1175 input_abs_set_res(input, usage->code,
1176 hidinput_calc_abs_res(field, usage->code));
1177
6967b4d9
HR		 1178 /* use a larger default input buffer for MT devices */
1179 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
1180 input_set_events_per_packet(input, 60);
dde5845a
JK		 1181 }
1182
1183 if (usage->type == EV_ABS &&
1184 (usage->hat_min < usage->hat_max || usage->hat_dir)) {
1185 int i;
1186 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
1187 input_set_abs_params(input, i, -1, 1, 0, 0);
1188 set_bit(i, input->absbit);
1189 }
1190 if (usage->hat_dir && !field->dpad)
1191 field->dpad = usage->code;
1192 }
1193
2c1d8aea
JK		 1194 /* for those devices which produce Consumer volume usage as relative,
1195 * we emulate pressing volumeup/volumedown appropriate number of times
1196 * in hidinput_hid_event()
1197 */
1198 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1199 (usage->code == ABS_VOLUME)) {
1200 set_bit(KEY_VOLUMEUP, input->keybit);
1201 set_bit(KEY_VOLUMEDOWN, input->keybit);
1202 }
1203
c01d50d1
JK		 1204 if (usage->type == EV_KEY) {
1205 set_bit(EV_MSC, input->evbit);
1206 set_bit(MSC_SCAN, input->mscbit);
1207 }
1208
dde5845a 1209ignore:
dde5845a 1210 return;
a635f9dd 1211
dde5845a
JK		 1212}
1213
2dc702c9
PH		 1214static void hidinput_handle_scroll(struct hid_usage *usage,
1215 struct input_dev *input,
1216 __s32 value)
1217{
1218 int code;
1219 int hi_res, lo_res;
1220
1221 if (value == 0)
1222 return;
1223
1224 if (usage->code == REL_WHEEL_HI_RES)
1225 code = REL_WHEEL;
1226 else
1227 code = REL_HWHEEL;
1228
1229 /*
1230 * Windows reports one wheel click as value 120. Where a high-res
1231 * scroll wheel is present, a fraction of 120 is reported instead.
1232 * Our REL_WHEEL_HI_RES axis does the same because all HW must
1233 * adhere to the 120 expectation.
1234 */
1235 hi_res = value * 120/usage->resolution_multiplier;
1236
1237 usage->wheel_accumulated += hi_res;
1238 lo_res = usage->wheel_accumulated/120;
1239 if (lo_res)
1240 usage->wheel_accumulated -= lo_res * 120;
1241
1242 input_event(input, EV_REL, code, lo_res);
1243 input_event(input, EV_REL, usage->code, hi_res);
1244}
1245
dde5845a
JK		 1246void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
1247{
1248 struct input_dev *input;
b4482a4b 1249 unsigned *quirks = &hid->quirks;
dde5845a 1250
581c4484 1251 if (!usage->type)
dde5845a
JK		 1252 return;
1253
581c4484
DT		 1254 if (usage->type == EV_PWR) {
1255 hidinput_update_battery(hid, value);
1256 return;
1257 }
dde5845a 1258
581c4484 1259 if (!field->hidinput)
dde5845a
JK		 1260 return;
1261
581c4484
DT		 1262 input = field->hidinput->input;
1263
dde5845a
JK		 1264 if (usage->hat_min < usage->hat_max || usage->hat_dir) {
1265 int hat_dir = usage->hat_dir;
1266 if (!hat_dir)
1267 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
1268 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
1269 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);
fc99f22c
DM		 1270 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
1271 return;
1272 }
dde5845a
JK		 1273
1274 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
1275 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
1276 return;
1277 }
1278
1279 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
1280 if (value) {
1281 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
1282 return;
1283 }
1284 input_event(input, usage->type, usage->code, 0);
1285 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
1286 return;
1287 }
1288
1289 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
1290 int a = field->logical_minimum;
1291 int b = field->logical_maximum;
1292 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
1293 }
1294
1295 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
58037eb9 1296 dbg_hid("Maximum Effects - %d\n",value);
dde5845a
JK		 1297 return;
1298 }
1299
1300 if (usage->hid == (HID_UP_PID | 0x7fUL)) {
58037eb9 1301 dbg_hid("PID Pool Report\n");
dde5845a
JK		 1302 return;
1303 }
1304
1305 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
1306 return;
1307
2dc702c9
PH		 1308 if ((usage->type == EV_REL) && (usage->code == REL_WHEEL_HI_RES ||
1309 usage->code == REL_HWHEEL_HI_RES)) {
1310 hidinput_handle_scroll(usage, input, value);
1311 return;
1312 }
1313
2c1d8aea
JK		 1314 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1315 (usage->code == ABS_VOLUME)) {
1316 int count = abs(value);
1317 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
1318 int i;
1319
1320 for (i = 0; i < count; i++) {
1321 input_event(input, EV_KEY, direction, 1);
1322 input_sync(input);
1323 input_event(input, EV_KEY, direction, 0);
1324 input_sync(input);
1325 }
1326 return;
1327 }
1328
883e0e36
NK		 1329 /*
1330 * Ignore out-of-range values as per HID specification,
c3883fe0
TK		 1331 * section 5.10 and 6.2.25, when NULL state bit is present.
1332 * When it's not, clamp the value to match Microsoft's input
1333 * driver as mentioned in "Required HID usages for digitizers":
1334 * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp
a688393b
JK		 1335 *
1336 * The logical_minimum < logical_maximum check is done so that we
1337 * don't unintentionally discard values sent by devices which
1338 * don't specify logical min and max.
883e0e36
NK		 1339 */
1340 if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
c3883fe0
TK		 1341 (field->logical_minimum < field->logical_maximum)) {
1342 if (field->flags & HID_MAIN_ITEM_NULL_STATE &&
1343 (value < field->logical_minimum ||
1344 value > field->logical_maximum)) {
1345 dbg_hid("Ignoring out-of-range value %x\n", value);
1346 return;
1347 }
1348 value = clamp(value,
1349 field->logical_minimum,
1350 field->logical_maximum);
6da70669
JK		 1351 }
1352
6ce901eb
DH		 1353 /*
1354 * Ignore reports for absolute data if the data didn't change. This is
1355 * not only an optimization but also fixes 'dead' key reports. Some
1356 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID
1357 * 0x31 and 0x32) report multiple keys, even though a localized keyboard
1358 * can only have one of them physically available. The 'dead' keys
1359 * report constant 0. As all map to the same keycode, they'd confuse
1360 * the input layer. If we filter the 'dead' keys on the HID level, we
1361 * skip the keycode translation and only forward real events.
1362 */
1363 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE |
1364 HID_MAIN_ITEM_BUFFERED_BYTE)) &&
8e7b3410 1365 (field->flags & HID_MAIN_ITEM_VARIABLE) &&
6ce901eb
DH		 1366 usage->usage_index < field->maxusage &&
1367 value == field->value[usage->usage_index])
1368 return;
1369
c01d50d1 1370 /* report the usage code as scancode if the key status has changed */
323ddaa8
JB		 1371 if (usage->type == EV_KEY &&
1372 (!test_bit(usage->code, input->key)) == value)
c01d50d1 1373 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
1fe8736d 1374
dde5845a
JK		 1375 input_event(input, usage->type, usage->code, value);
1376
3eb4351a
DT		 1377 if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
1378 usage->type == EV_KEY && value) {
1379 input_sync(input);
dde5845a 1380 input_event(input, usage->type, usage->code, 0);
3eb4351a 1381 }
dde5845a
JK		 1382}
1383
1384void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1385{
1386 struct hid_input *hidinput;
1387
24750f3e
HR		 1388 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1389 return;
1390
dde5845a
JK		 1391 list_for_each_entry(hidinput, &hid->inputs, list)
1392 input_sync(hidinput->input);
1393}
229695e5 1394EXPORT_SYMBOL_GPL(hidinput_report_event);
dde5845a 1395
229695e5 1396int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
dde5845a
JK		 1397{
1398 struct hid_report *report;
1399 int i, j;
1400
1401 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1402 for (i = 0; i < report->maxfield; i++) {
1403 *field = report->field[i];
1404 for (j = 0; j < (*field)->maxusage; j++)
1405 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1406 return j;
1407 }
1408 }
1409 return -1;
1410}
229695e5 1411EXPORT_SYMBOL_GPL(hidinput_find_field);
dde5845a 1412
4371ea82
DK		 1413struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1414{
1415 struct hid_report *report;
1416 struct hid_field *field;
1417 int i, j;
1418
1419 list_for_each_entry(report,
1420 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1421 list) {
1422 for (i = 0; i < report->maxfield; i++) {
1423 field = report->field[i];
1424 for (j = 0; j < field->maxusage; j++)
1425 if (field->usage[j].type == EV_LED)
1426 return field;
1427 }
1428 }
1429 return NULL;
1430}
1431EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1432
1433unsigned int hidinput_count_leds(struct hid_device *hid)
1434{
1435 struct hid_report *report;
1436 struct hid_field *field;
1437 int i, j;
1438 unsigned int count = 0;
1439
1440 list_for_each_entry(report,
1441 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1442 list) {
1443 for (i = 0; i < report->maxfield; i++) {
1444 field = report->field[i];
1445 for (j = 0; j < field->maxusage; j++)
1446 if (field->usage[j].type == EV_LED &&
1447 field->value[j])
1448 count += 1;
1449 }
1450 }
1451 return count;
1452}
1453EXPORT_SYMBOL_GPL(hidinput_count_leds);
1454
50c9d75b
DH		 1455static void hidinput_led_worker(struct work_struct *work)
1456{
1457 struct hid_device *hid = container_of(work, struct hid_device,
1458 led_work);
1459 struct hid_field *field;
1460 struct hid_report *report;
3064a03b
AM		 1461 int ret;
1462 u32 len;
50c9d75b
DH		 1463 __u8 *buf;
1464
1465 field = hidinput_get_led_field(hid);
1466 if (!field)
1467 return;
1468
1469 /*
1470 * field->report is accessed unlocked regarding HID core. So there might
1471 * be another incoming SET-LED request from user-space, which changes
1472 * the LED state while we assemble our outgoing buffer. However, this
1473 * doesn't matter as hid_output_report() correctly converts it into a
1474 * boolean value no matter what information is currently set on the LED
1475 * field (even garbage). So the remote device will always get a valid
1476 * request.
1477 * And in case we send a wrong value, a next led worker is spawned
1478 * for every SET-LED request so the following worker will send the
1479 * correct value, guaranteed!
1480 */
1481
1482 report = field->report;
1483
1484 /* use custom SET_REPORT request if possible (asynchronous) */
1485 if (hid->ll_driver->request)
1486 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT);
1487
1488 /* fall back to generic raw-output-report */
dabb05c6 1489 len = hid_report_len(report);
9d27f432 1490 buf = hid_alloc_report_buf(report, GFP_KERNEL);
50c9d75b
DH		 1491 if (!buf)
1492 return;
1493
1494 hid_output_report(report, buf);
1495 /* synchronous output report */
2ebaebcf
BT		 1496 ret = hid_hw_output_report(hid, buf, len);
1497 if (ret == -ENOSYS)
1498 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT,
1499 HID_REQ_SET_REPORT);
50c9d75b
DH		 1500 kfree(buf);
1501}
1502
1503static int hidinput_input_event(struct input_dev *dev, unsigned int type,
1504 unsigned int code, int value)
1505{
1506 struct hid_device *hid = input_get_drvdata(dev);
1507 struct hid_field *field;
1508 int offset;
1509
1510 if (type == EV_FF)
1511 return input_ff_event(dev, type, code, value);
1512
1513 if (type != EV_LED)
1514 return -1;
1515
1516 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
1517 hid_warn(dev, "event field not found\n");
1518 return -1;
1519 }
1520
1521 hid_set_field(field, offset, value);
1522
1523 schedule_work(&hid->led_work);
1524 return 0;
1525}
1526
7c379146
JK		 1527static int hidinput_open(struct input_dev *dev)
1528{
e0712985
DT		 1529 struct hid_device *hid = input_get_drvdata(dev);
1530
5bea7660 1531 return hid_hw_open(hid);
7c379146
JK		 1532}
1533
1534static void hidinput_close(struct input_dev *dev)
1535{
e0712985
DT		 1536 struct hid_device *hid = input_get_drvdata(dev);
1537
5bea7660 1538 hid_hw_close(hid);
7c379146
JK		 1539}
1540
2dc702c9
PH		 1541static void hidinput_change_resolution_multipliers(struct hid_device *hid)
1542{
1543 struct hid_report_enum *rep_enum;
1544 struct hid_report *rep;
1545 struct hid_usage *usage;
1546 int i, j;
1547
1548 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1549 list_for_each_entry(rep, &rep_enum->report_list, list) {
1550 bool update_needed = false;
1551
1552 if (rep->maxfield == 0)
1553 continue;
1554
1555 /*
1556 * If we have more than one feature within this report we
1557 * need to fill in the bits from the others before we can
1558 * overwrite the ones for the Resolution Multiplier.
1559 */
1560 if (rep->maxfield > 1) {
1561 hid_hw_request(hid, rep, HID_REQ_GET_REPORT);
1562 hid_hw_wait(hid);
1563 }
1564
1565 for (i = 0; i < rep->maxfield; i++) {
1566 __s32 logical_max = rep->field[i]->logical_maximum;
1567
1568 /* There is no good reason for a Resolution
1569 * Multiplier to have a count other than 1.
1570 * Ignore that case.
1571 */
1572 if (rep->field[i]->report_count != 1)
1573 continue;
1574
1575 for (j = 0; j < rep->field[i]->maxusage; j++) {
1576 usage = &rep->field[i]->usage[j];
1577
1578 if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER)
1579 continue;
1580
1581 *rep->field[i]->value = logical_max;
1582 update_needed = true;
1583 }
1584 }
1585 if (update_needed)
1586 hid_hw_request(hid, rep, HID_REQ_SET_REPORT);
1587 }
1588
1589 /* refresh our structs */
1590 hid_setup_resolution_multiplier(hid);
1591}
1592
f635bd11
HR		 1593static void report_features(struct hid_device *hid)
1594{
1595 struct hid_driver *drv = hid->driver;
1596 struct hid_report_enum *rep_enum;
1597 struct hid_report *rep;
581c4484 1598 struct hid_usage *usage;
f635bd11
HR		 1599 int i, j;
1600
f635bd11
HR		 1601 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1602 list_for_each_entry(rep, &rep_enum->report_list, list)
cc6b54aa
BT		 1603 for (i = 0; i < rep->maxfield; i++) {
1604 /* Ignore if report count is out of bounds. */
1605 if (rep->field[i]->report_count < 1)
1606 continue;
1607
c5a92aa3 1608 for (j = 0; j < rep->field[i]->maxusage; j++) {
581c4484
DT		 1609 usage = &rep->field[i]->usage[j];
1610
c5a92aa3 1611 /* Verify if Battery Strength feature is available */
581c4484
DT		 1612 if (usage->hid == HID_DC_BATTERYSTRENGTH)
1613 hidinput_setup_battery(hid, HID_FEATURE_REPORT,
1614 rep->field[i]);
c5a92aa3
DN		 1615
1616 if (drv->feature_mapping)
581c4484 1617 drv->feature_mapping(hid, rep->field[i], usage);
c5a92aa3 1618 }
cc6b54aa 1619 }
f635bd11
HR		 1620}
1621
c554bb04
BT		 1622static struct hid_input *hidinput_allocate(struct hid_device *hid,
1623 unsigned int application)
ae751fa8
BT		 1624{
1625 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1626 struct input_dev *input_dev = input_allocate_device();
c554bb04 1627 const char *suffix = NULL;
d7065620 1628 size_t suffix_len, name_len;
c554bb04
BT		 1629
1630 if (!hidinput || !input_dev)
1631 goto fail;
1632
1633 if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) &&
1634 hid->maxapplication > 1) {
1635 switch (application) {
1636 case HID_GD_KEYBOARD:
1637 suffix = "Keyboard";
1638 break;
1639 case HID_GD_KEYPAD:
1640 suffix = "Keypad";
1641 break;
1642 case HID_GD_MOUSE:
1643 suffix = "Mouse";
1644 break;
1645 case HID_DG_STYLUS:
1646 suffix = "Pen";
1647 break;
1648 case HID_DG_TOUCHSCREEN:
1649 suffix = "Touchscreen";
1650 break;
1651 case HID_DG_TOUCHPAD:
1652 suffix = "Touchpad";
1653 break;
1654 case HID_GD_SYSTEM_CONTROL:
1655 suffix = "System Control";
1656 break;
1657 case HID_CP_CONSUMER_CONTROL:
1658 suffix = "Consumer Control";
1659 break;
1660 case HID_GD_WIRELESS_RADIO_CTLS:
1661 suffix = "Wireless Radio Control";
1662 break;
ba6b055e
BT		 1663 case HID_GD_SYSTEM_MULTIAXIS:
1664 suffix = "System Multi Axis";
1665 break;
c554bb04
BT		 1666 default:
1667 break;
1668 }
1669 }
1670
1671 if (suffix) {
d7065620
BT		 1672 name_len = strlen(hid->name);
1673 suffix_len = strlen(suffix);
1674 if ((name_len < suffix_len) ||
1675 strcmp(hid->name + name_len - suffix_len, suffix)) {
1676 hidinput->name = kasprintf(GFP_KERNEL, "%s %s",
1677 hid->name, suffix);
1678 if (!hidinput->name)
1679 goto fail;
1680 }
ae751fa8
BT		 1681 }
1682
1683 input_set_drvdata(input_dev, hid);
3c86726c 1684 input_dev->event = hidinput_input_event;
ae751fa8
BT		 1685 input_dev->open = hidinput_open;
1686 input_dev->close = hidinput_close;
1687 input_dev->setkeycode = hidinput_setkeycode;
1688 input_dev->getkeycode = hidinput_getkeycode;
1689
c554bb04 1690 input_dev->name = hidinput->name ? hidinput->name : hid->name;
ae751fa8
BT		 1691 input_dev->phys = hid->phys;
1692 input_dev->uniq = hid->uniq;
1693 input_dev->id.bustype = hid->bus;
1694 input_dev->id.vendor = hid->vendor;
1695 input_dev->id.product = hid->product;
1696 input_dev->id.version = hid->version;
bbe31754 1697 input_dev->dev.parent = &hid->dev;
e1b63c01 1698
ae751fa8 1699 hidinput->input = input_dev;
0d6c3011 1700 hidinput->application = application;
ae751fa8
BT		 1701 list_add_tail(&hidinput->list, &hid->inputs);
1702
e1b63c01
BT		 1703 INIT_LIST_HEAD(&hidinput->reports);
1704
ae751fa8 1705 return hidinput;
c554bb04
BT		 1706
1707fail:
1708 kfree(hidinput);
1709 input_free_device(input_dev);
1710 hid_err(hid, "Out of memory during hid input probe\n");
1711 return NULL;
ae751fa8
BT		 1712}
1713
4f22decf
BT		 1714static bool hidinput_has_been_populated(struct hid_input *hidinput)
1715{
1716 int i;
1717 unsigned long r = 0;
1718
1719 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++)
1720 r |= hidinput->input->evbit[i];
1721
1722 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++)
1723 r |= hidinput->input->keybit[i];
1724
1725 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++)
1726 r |= hidinput->input->relbit[i];
1727
1728 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++)
1729 r |= hidinput->input->absbit[i];
1730
1731 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++)
1732 r |= hidinput->input->mscbit[i];
1733
1734 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++)
1735 r |= hidinput->input->ledbit[i];
1736
1737 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++)
1738 r |= hidinput->input->sndbit[i];
1739
1740 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++)
1741 r |= hidinput->input->ffbit[i];
1742
1743 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++)
1744 r |= hidinput->input->swbit[i];
1745
1746 return !!r;
1747}
1748
1749static void hidinput_cleanup_hidinput(struct hid_device *hid,
1750 struct hid_input *hidinput)
1751{
1752 struct hid_report *report;
1753 int i, k;
1754
1755 list_del(&hidinput->list);
1756 input_free_device(hidinput->input);
c554bb04 1757 kfree(hidinput->name);
4f22decf
BT		 1758
1759 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1760 if (k == HID_OUTPUT_REPORT &&
1761 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1762 continue;
1763
1764 list_for_each_entry(report, &hid->report_enum[k].report_list,
1765 list) {
1766
1767 for (i = 0; i < report->maxfield; i++)
1768 if (report->field[i]->hidinput == hidinput)
1769 report->field[i]->hidinput = NULL;
1770 }
1771 }
1772
1773 kfree(hidinput);
1774}
1775
72d19459
BT		 1776static struct hid_input *hidinput_match(struct hid_report *report)
1777{
1778 struct hid_device *hid = report->device;
1779 struct hid_input *hidinput;
1780
1781 list_for_each_entry(hidinput, &hid->inputs, list) {
1782 if (hidinput->report &&
1783 hidinput->report->id == report->id)
1784 return hidinput;
1785 }
1786
1787 return NULL;
1788}
1789
f07b3c1d
BT		 1790static struct hid_input *hidinput_match_application(struct hid_report *report)
1791{
1792 struct hid_device *hid = report->device;
1793 struct hid_input *hidinput;
1794
1795 list_for_each_entry(hidinput, &hid->inputs, list) {
0d6c3011 1796 if (hidinput->application == report->application)
f07b3c1d
BT		 1797 return hidinput;
1798 }
1799
1800 return NULL;
1801}
1802
72d19459
BT		 1803static inline void hidinput_configure_usages(struct hid_input *hidinput,
1804 struct hid_report *report)
1805{
1806 int i, j;
1807
1808 for (i = 0; i < report->maxfield; i++)
1809 for (j = 0; j < report->field[i]->maxusage; j++)
1810 hidinput_configure_usage(hidinput, report->field[i],
1811 report->field[i]->usage + j);
1812}
1813
dde5845a
JK		 1814/*
1815 * Register the input device; print a message.
1816 * Configure the input layer interface
1817 * Read all reports and initialize the absolute field values.
1818 */
1819
93c10132 1820int hidinput_connect(struct hid_device *hid, unsigned int force)
dde5845a 1821{
9ebf3d76 1822 struct hid_driver *drv = hid->driver;
dde5845a 1823 struct hid_report *report;
72d19459 1824 struct hid_input *next, *hidinput = NULL;
c554bb04 1825 unsigned int application;
72d19459 1826 int i, k;
dde5845a
JK		 1827
1828 INIT_LIST_HEAD(&hid->inputs);
50c9d75b 1829 INIT_WORK(&hid->led_work, hidinput_led_worker);
dde5845a 1830
190d7f02
BT		 1831 hid->status &= ~HID_STAT_DUP_DETECTED;
1832
93c10132
JS		 1833 if (!force) {
1834 for (i = 0; i < hid->maxcollection; i++) {
1835 struct hid_collection *col = &hid->collection[i];
1836 if (col->type == HID_COLLECTION_APPLICATION ||
1837 col->type == HID_COLLECTION_PHYSICAL)
1838 if (IS_INPUT_APPLICATION(col->usage))
1839 break;
1840 }
dde5845a 1841
93c10132
JS		 1842 if (i == hid->maxcollection)
1843 return -1;
1844 }
dde5845a 1845
f635bd11
HR		 1846 report_features(hid);
1847
1848 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
0d2689c0
BT		 1849 if (k == HID_OUTPUT_REPORT &&
1850 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1851 continue;
5556feae 1852
dde5845a
JK		 1853 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
1854
1855 if (!report->maxfield)
1856 continue;
1857
c554bb04
BT		 1858 application = report->application;
1859
72d19459
BT		 1860 /*
1861 * Find the previous hidinput report attached
1862 * to this report id.
1863 */
1864 if (hid->quirks & HID_QUIRK_MULTI_INPUT)
1865 hidinput = hidinput_match(report);
f07b3c1d
BT		 1866 else if (hid->maxapplication > 1 &&
1867 (hid->quirks & HID_QUIRK_INPUT_PER_APP))
1868 hidinput = hidinput_match_application(report);
72d19459 1869
dde5845a 1870 if (!hidinput) {
c554bb04 1871 hidinput = hidinput_allocate(hid, application);
ae751fa8 1872 if (!hidinput)
368d290b 1873 goto out_unwind;
dde5845a
JK		 1874 }
1875
72d19459 1876 hidinput_configure_usages(hidinput, report);
4f22decf 1877
72d19459 1878 if (hid->quirks & HID_QUIRK_MULTI_INPUT)
dde5845a 1879 hidinput->report = report;
e1b63c01
BT		 1880
1881 list_add_tail(&report->hidinput_list,
1882 &hidinput->reports);
dde5845a 1883 }
0d2689c0 1884 }
dde5845a 1885
2dc702c9
PH		 1886 hidinput_change_resolution_multipliers(hid);
1887
72d19459 1888 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
39335d1c
BT		 1889 if (drv->input_configured &&
1890 drv->input_configured(hid, hidinput))
1891 goto out_unwind;
1892
1893 if (!hidinput_has_been_populated(hidinput)) {
72d19459
BT		 1894 /* no need to register an input device not populated */
1895 hidinput_cleanup_hidinput(hid, hidinput);
1896 continue;
1897 }
1898
72d19459
BT		 1899 if (input_register_device(hidinput->input))
1900 goto out_unwind;
1901 hidinput->registered = true;
4f22decf
BT		 1902 }
1903
1904 if (list_empty(&hid->inputs)) {
1905 hid_err(hid, "No inputs registered, leaving\n");
1906 goto out_unwind;
1907 }
1908
190d7f02
BT		 1909 if (hid->status & HID_STAT_DUP_DETECTED)
1910 hid_dbg(hid,
1911 "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n");
1912
dde5845a 1913 return 0;
368d290b 1914
368d290b
DH		 1915out_unwind:
1916 /* unwind the ones we already registered */
1917 hidinput_disconnect(hid);
1918
1919 return -1;
dde5845a 1920}
229695e5 1921EXPORT_SYMBOL_GPL(hidinput_connect);
dde5845a
JK		 1922
1923void hidinput_disconnect(struct hid_device *hid)
1924{
1925 struct hid_input *hidinput, *next;
1926
4f5ca836
JF		 1927 hidinput_cleanup_battery(hid);
1928
dde5845a
JK		 1929 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1930 list_del(&hidinput->list);
72d19459
BT		 1931 if (hidinput->registered)
1932 input_unregister_device(hidinput->input);
1933 else
1934 input_free_device(hidinput->input);
e38c0ac5 1935 kfree(hidinput->name);
dde5845a
JK		 1936 kfree(hidinput);
1937 }
50c9d75b
DH		 1938
1939 /* led_work is spawned by input_dev callbacks, but doesn't access the
1940 * parent input_dev at all. Once all input devices are removed, we
1941 * know that led_work will never get restarted, so we can cancel it
1942 * synchronously and are safe. */
1943 cancel_work_sync(&hid->led_work);
dde5845a 1944}
229695e5 1945EXPORT_SYMBOL_GPL(hidinput_disconnect);
Linux 6.x block layer and io_uring tree(s)