Line data Source code
1 : // SPDX-License-Identifier: GPL-2.0-or-later
2 : /*
3 : * Copyright (c) 2000-2001 Vojtech Pavlik
4 : * Copyright (c) 2006-2010 Jiri Kosina
5 : *
6 : * HID to Linux Input mapping
7 : */
8 :
9 : /*
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>
19 :
20 : #include <linux/hid.h>
21 : #include <linux/hid-debug.h>
22 :
23 : #include "hid-ids.h"
24 :
25 : #define unk KEY_UNKNOWN
26 :
27 : static 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,
37 : 122,123, 90, 91, 85,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,
38 : unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
39 : unk,unk,unk,unk,unk,unk,179,180,unk,unk,unk,unk,unk,unk,unk,unk,
40 : unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
41 : unk,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,unk,unk,unk,unk,
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 :
46 : static 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 :
51 : struct usage_priority {
52 : __u32 usage; /* the HID usage associated */
53 : bool global; /* we assume all usages to be slotted,
54 : * unless global
55 : */
56 : unsigned int slot_overwrite; /* for globals: allows to set the usage
57 : * before or after the slots
58 : */
59 : };
60 :
61 : /*
62 : * hid-input will convert this list into priorities:
63 : * the first element will have the highest priority
64 : * (the length of the following array) and the last
65 : * element the lowest (1).
66 : *
67 : * hid-input will then shift the priority by 8 bits to leave some space
68 : * in case drivers want to interleave other fields.
69 : *
70 : * To accommodate slotted devices, the slot priority is
71 : * defined in the next 8 bits (defined by 0xff - slot).
72 : *
73 : * If drivers want to add fields before those, hid-input will
74 : * leave out the first 8 bits of the priority value.
75 : *
76 : * This still leaves us 65535 individual priority values.
77 : */
78 : static const struct usage_priority hidinput_usages_priorities[] = {
79 : { /* Eraser (eraser touching) must always come before tipswitch */
80 : .usage = HID_DG_ERASER,
81 : },
82 : { /* Invert must always come before In Range */
83 : .usage = HID_DG_INVERT,
84 : },
85 : { /* Is the tip of the tool touching? */
86 : .usage = HID_DG_TIPSWITCH,
87 : },
88 : { /* Tip Pressure might emulate tip switch */
89 : .usage = HID_DG_TIPPRESSURE,
90 : },
91 : { /* In Range needs to come after the other tool states */
92 : .usage = HID_DG_INRANGE,
93 : },
94 : };
95 :
96 : #define map_abs(c) hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c))
97 : #define map_rel(c) hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c))
98 : #define map_key(c) hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c))
99 : #define map_led(c) hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c))
100 : #define map_msc(c) hid_map_usage(hidinput, usage, &bit, &max, EV_MSC, (c))
101 :
102 : #define map_abs_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \
103 : &max, EV_ABS, (c))
104 : #define map_key_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \
105 : &max, EV_KEY, (c))
106 :
107 0 : static bool match_scancode(struct hid_usage *usage,
108 : unsigned int cur_idx, unsigned int scancode)
109 : {
110 0 : return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode;
111 : }
112 :
113 0 : static bool match_keycode(struct hid_usage *usage,
114 : unsigned int cur_idx, unsigned int keycode)
115 : {
116 : /*
117 : * We should exclude unmapped usages when doing lookup by keycode.
118 : */
119 0 : return (usage->type == EV_KEY && usage->code == keycode);
120 : }
121 :
122 0 : static bool match_index(struct hid_usage *usage,
123 : unsigned int cur_idx, unsigned int idx)
124 : {
125 0 : return cur_idx == idx;
126 : }
127 :
128 : typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage,
129 : unsigned int cur_idx, unsigned int val);
130 :
131 0 : static struct hid_usage *hidinput_find_key(struct hid_device *hid,
132 : hid_usage_cmp_t match,
133 : unsigned int value,
134 : unsigned int *usage_idx)
135 : {
136 0 : unsigned int i, j, k, cur_idx = 0;
137 : struct hid_report *report;
138 : struct hid_usage *usage;
139 :
140 0 : for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
141 0 : list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
142 0 : for (i = 0; i < report->maxfield; i++) {
143 0 : for (j = 0; j < report->field[i]->maxusage; j++) {
144 0 : usage = report->field[i]->usage + j;
145 0 : if (usage->type == EV_KEY || usage->type == 0) {
146 0 : if (match(usage, cur_idx, value)) {
147 0 : if (usage_idx)
148 0 : *usage_idx = cur_idx;
149 : return usage;
150 : }
151 0 : cur_idx++;
152 : }
153 : }
154 : }
155 : }
156 : }
157 : return NULL;
158 : }
159 :
160 0 : static struct hid_usage *hidinput_locate_usage(struct hid_device *hid,
161 : const struct input_keymap_entry *ke,
162 : unsigned int *index)
163 : {
164 : struct hid_usage *usage;
165 : unsigned int scancode;
166 :
167 0 : if (ke->flags & INPUT_KEYMAP_BY_INDEX)
168 0 : usage = hidinput_find_key(hid, match_index, ke->index, index);
169 0 : else if (input_scancode_to_scalar(ke, &scancode) == 0)
170 0 : usage = hidinput_find_key(hid, match_scancode, scancode, index);
171 : else
172 : usage = NULL;
173 :
174 0 : return usage;
175 : }
176 :
177 0 : static int hidinput_getkeycode(struct input_dev *dev,
178 : struct input_keymap_entry *ke)
179 : {
180 0 : struct hid_device *hid = input_get_drvdata(dev);
181 : struct hid_usage *usage;
182 : unsigned int scancode, index;
183 :
184 0 : usage = hidinput_locate_usage(hid, ke, &index);
185 0 : if (usage) {
186 0 : ke->keycode = usage->type == EV_KEY ?
187 0 : usage->code : KEY_RESERVED;
188 0 : ke->index = index;
189 0 : scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE);
190 0 : ke->len = sizeof(scancode);
191 0 : memcpy(ke->scancode, &scancode, sizeof(scancode));
192 0 : return 0;
193 : }
194 :
195 : return -EINVAL;
196 : }
197 :
198 0 : static int hidinput_setkeycode(struct input_dev *dev,
199 : const struct input_keymap_entry *ke,
200 : unsigned int *old_keycode)
201 : {
202 0 : struct hid_device *hid = input_get_drvdata(dev);
203 : struct hid_usage *usage;
204 :
205 0 : usage = hidinput_locate_usage(hid, ke, NULL);
206 0 : if (usage) {
207 0 : *old_keycode = usage->type == EV_KEY ?
208 0 : usage->code : KEY_RESERVED;
209 0 : usage->type = EV_KEY;
210 0 : usage->code = ke->keycode;
211 :
212 0 : clear_bit(*old_keycode, dev->keybit);
213 0 : set_bit(usage->code, dev->keybit);
214 : dbg_hid("Assigned keycode %d to HID usage code %x\n",
215 : usage->code, usage->hid);
216 :
217 : /*
218 : * Set the keybit for the old keycode if the old keycode is used
219 : * by another key
220 : */
221 0 : if (hidinput_find_key(hid, match_keycode, *old_keycode, NULL))
222 0 : set_bit(*old_keycode, dev->keybit);
223 :
224 : return 0;
225 : }
226 :
227 : return -EINVAL;
228 : }
229 :
230 :
231 : /**
232 : * hidinput_calc_abs_res - calculate an absolute axis resolution
233 : * @field: the HID report field to calculate resolution for
234 : * @code: axis code
235 : *
236 : * The formula is:
237 : * (logical_maximum - logical_minimum)
238 : * resolution = ----------------------------------------------------------
239 : * (physical_maximum - physical_minimum) * 10 ^ unit_exponent
240 : *
241 : * as seen in the HID specification v1.11 6.2.2.7 Global Items.
242 : *
243 : * Only exponent 1 length units are processed. Centimeters and inches are
244 : * converted to millimeters. Degrees are converted to radians.
245 : */
246 0 : __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
247 : {
248 0 : __s32 unit_exponent = field->unit_exponent;
249 0 : __s32 logical_extents = field->logical_maximum -
250 0 : field->logical_minimum;
251 0 : __s32 physical_extents = field->physical_maximum -
252 0 : field->physical_minimum;
253 : __s32 prev;
254 :
255 : /* Check if the extents are sane */
256 0 : if (logical_extents <= 0 || physical_extents <= 0)
257 : return 0;
258 :
259 : /*
260 : * Verify and convert units.
261 : * See HID specification v1.11 6.2.2.7 Global Items for unit decoding
262 : */
263 : switch (code) {
264 : case ABS_X:
265 : case ABS_Y:
266 : case ABS_Z:
267 : case ABS_MT_POSITION_X:
268 : case ABS_MT_POSITION_Y:
269 : case ABS_MT_TOOL_X:
270 : case ABS_MT_TOOL_Y:
271 : case ABS_MT_TOUCH_MAJOR:
272 : case ABS_MT_TOUCH_MINOR:
273 0 : if (field->unit == 0x11) { /* If centimeters */
274 : /* Convert to millimeters */
275 0 : unit_exponent += 1;
276 0 : } else if (field->unit == 0x13) { /* If inches */
277 : /* Convert to millimeters */
278 0 : prev = physical_extents;
279 0 : physical_extents *= 254;
280 0 : if (physical_extents < prev)
281 : return 0;
282 0 : unit_exponent -= 1;
283 : } else {
284 : return 0;
285 : }
286 : break;
287 :
288 : case ABS_RX:
289 : case ABS_RY:
290 : case ABS_RZ:
291 : case ABS_WHEEL:
292 : case ABS_TILT_X:
293 : case ABS_TILT_Y:
294 0 : if (field->unit == 0x14) { /* If degrees */
295 : /* Convert to radians */
296 0 : prev = logical_extents;
297 0 : logical_extents *= 573;
298 0 : if (logical_extents < prev)
299 : return 0;
300 0 : unit_exponent += 1;
301 0 : } else if (field->unit != 0x12) { /* If not radians */
302 : return 0;
303 : }
304 : break;
305 :
306 : default:
307 : return 0;
308 : }
309 :
310 : /* Apply negative unit exponent */
311 0 : for (; unit_exponent < 0; unit_exponent++) {
312 0 : prev = logical_extents;
313 0 : logical_extents *= 10;
314 0 : if (logical_extents < prev)
315 : return 0;
316 : }
317 : /* Apply positive unit exponent */
318 0 : for (; unit_exponent > 0; unit_exponent--) {
319 0 : prev = physical_extents;
320 0 : physical_extents *= 10;
321 0 : if (physical_extents < prev)
322 : return 0;
323 : }
324 :
325 : /* Calculate resolution */
326 0 : return DIV_ROUND_CLOSEST(logical_extents, physical_extents);
327 : }
328 : EXPORT_SYMBOL_GPL(hidinput_calc_abs_res);
329 :
330 : #ifdef CONFIG_HID_BATTERY_STRENGTH
331 : static enum power_supply_property hidinput_battery_props[] = {
332 : POWER_SUPPLY_PROP_PRESENT,
333 : POWER_SUPPLY_PROP_ONLINE,
334 : POWER_SUPPLY_PROP_CAPACITY,
335 : POWER_SUPPLY_PROP_MODEL_NAME,
336 : POWER_SUPPLY_PROP_STATUS,
337 : POWER_SUPPLY_PROP_SCOPE,
338 : };
339 :
340 : #define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */
341 : #define HID_BATTERY_QUIRK_FEATURE (1 << 1) /* ask for feature report */
342 : #define HID_BATTERY_QUIRK_IGNORE (1 << 2) /* completely ignore the battery */
343 : #define HID_BATTERY_QUIRK_AVOID_QUERY (1 << 3) /* do not query the battery */
344 :
345 : static const struct hid_device_id hid_battery_quirks[] = {
346 : { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
347 : USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO),
348 : HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
349 : { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
350 : USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI),
351 : HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
352 : { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
353 : USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI),
354 : HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
355 : { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
356 : USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO),
357 : HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
358 : { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
359 : USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI),
360 : HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
361 : { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM,
362 : USB_DEVICE_ID_ELECOM_BM084),
363 : HID_BATTERY_QUIRK_IGNORE },
364 : { HID_USB_DEVICE(USB_VENDOR_ID_SYMBOL,
365 : USB_DEVICE_ID_SYMBOL_SCANNER_3),
366 : HID_BATTERY_QUIRK_IGNORE },
367 : { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK,
368 : USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD),
369 : HID_BATTERY_QUIRK_IGNORE },
370 : { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH,
371 : USB_DEVICE_ID_LOGITECH_DINOVO_EDGE_KBD),
372 : HID_BATTERY_QUIRK_IGNORE },
373 : { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_ASUS_TP420IA_TOUCHSCREEN),
374 : HID_BATTERY_QUIRK_IGNORE },
375 : { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_ASUS_GV301RA_TOUCHSCREEN),
376 : HID_BATTERY_QUIRK_IGNORE },
377 : { HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550_TOUCHSCREEN),
378 : HID_BATTERY_QUIRK_IGNORE },
379 : { HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550VE_TOUCHSCREEN),
380 : HID_BATTERY_QUIRK_IGNORE },
381 : { HID_USB_DEVICE(USB_VENDOR_ID_UGEE, USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_L),
382 : HID_BATTERY_QUIRK_AVOID_QUERY },
383 : { HID_USB_DEVICE(USB_VENDOR_ID_UGEE, USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_PRO_MW),
384 : HID_BATTERY_QUIRK_AVOID_QUERY },
385 : { HID_USB_DEVICE(USB_VENDOR_ID_UGEE, USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_PRO_SW),
386 : HID_BATTERY_QUIRK_AVOID_QUERY },
387 : { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_15),
388 : HID_BATTERY_QUIRK_IGNORE },
389 : { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_15T_DR100),
390 : HID_BATTERY_QUIRK_IGNORE },
391 : { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_EU0009NV),
392 : HID_BATTERY_QUIRK_IGNORE },
393 : { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_15),
394 : HID_BATTERY_QUIRK_IGNORE },
395 : { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_13_AW0020NG),
396 : HID_BATTERY_QUIRK_IGNORE },
397 : { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_SURFACE_GO_TOUCHSCREEN),
398 : HID_BATTERY_QUIRK_IGNORE },
399 : { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_SURFACE_GO2_TOUCHSCREEN),
400 : HID_BATTERY_QUIRK_IGNORE },
401 : { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_LENOVO_YOGA_C630_TOUCHSCREEN),
402 : HID_BATTERY_QUIRK_IGNORE },
403 : { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_13T_AW100),
404 : HID_BATTERY_QUIRK_IGNORE },
405 : { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_14T_EA100_V1),
406 : HID_BATTERY_QUIRK_IGNORE },
407 : { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_14T_EA100_V2),
408 : HID_BATTERY_QUIRK_IGNORE },
409 : {}
410 : };
411 :
412 : static unsigned find_battery_quirk(struct hid_device *hdev)
413 : {
414 : unsigned quirks = 0;
415 : const struct hid_device_id *match;
416 :
417 : match = hid_match_id(hdev, hid_battery_quirks);
418 : if (match != NULL)
419 : quirks = match->driver_data;
420 :
421 : return quirks;
422 : }
423 :
424 : static int hidinput_scale_battery_capacity(struct hid_device *dev,
425 : int value)
426 : {
427 : if (dev->battery_min < dev->battery_max &&
428 : value >= dev->battery_min && value <= dev->battery_max)
429 : value = ((value - dev->battery_min) * 100) /
430 : (dev->battery_max - dev->battery_min);
431 :
432 : return value;
433 : }
434 :
435 : static int hidinput_query_battery_capacity(struct hid_device *dev)
436 : {
437 : u8 *buf;
438 : int ret;
439 :
440 : buf = kmalloc(4, GFP_KERNEL);
441 : if (!buf)
442 : return -ENOMEM;
443 :
444 : ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 4,
445 : dev->battery_report_type, HID_REQ_GET_REPORT);
446 : if (ret < 2) {
447 : kfree(buf);
448 : return -ENODATA;
449 : }
450 :
451 : ret = hidinput_scale_battery_capacity(dev, buf[1]);
452 : kfree(buf);
453 : return ret;
454 : }
455 :
456 : static int hidinput_get_battery_property(struct power_supply *psy,
457 : enum power_supply_property prop,
458 : union power_supply_propval *val)
459 : {
460 : struct hid_device *dev = power_supply_get_drvdata(psy);
461 : int value;
462 : int ret = 0;
463 :
464 : switch (prop) {
465 : case POWER_SUPPLY_PROP_PRESENT:
466 : case POWER_SUPPLY_PROP_ONLINE:
467 : val->intval = 1;
468 : break;
469 :
470 : case POWER_SUPPLY_PROP_CAPACITY:
471 : if (dev->battery_status != HID_BATTERY_REPORTED &&
472 : !dev->battery_avoid_query) {
473 : value = hidinput_query_battery_capacity(dev);
474 : if (value < 0)
475 : return value;
476 : } else {
477 : value = dev->battery_capacity;
478 : }
479 :
480 : val->intval = value;
481 : break;
482 :
483 : case POWER_SUPPLY_PROP_MODEL_NAME:
484 : val->strval = dev->name;
485 : break;
486 :
487 : case POWER_SUPPLY_PROP_STATUS:
488 : if (dev->battery_status != HID_BATTERY_REPORTED &&
489 : !dev->battery_avoid_query) {
490 : value = hidinput_query_battery_capacity(dev);
491 : if (value < 0)
492 : return value;
493 :
494 : dev->battery_capacity = value;
495 : dev->battery_status = HID_BATTERY_QUERIED;
496 : }
497 :
498 : if (dev->battery_status == HID_BATTERY_UNKNOWN)
499 : val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
500 : else
501 : val->intval = dev->battery_charge_status;
502 : break;
503 :
504 : case POWER_SUPPLY_PROP_SCOPE:
505 : val->intval = POWER_SUPPLY_SCOPE_DEVICE;
506 : break;
507 :
508 : default:
509 : ret = -EINVAL;
510 : break;
511 : }
512 :
513 : return ret;
514 : }
515 :
516 : static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
517 : struct hid_field *field, bool is_percentage)
518 : {
519 : struct power_supply_desc *psy_desc;
520 : struct power_supply_config psy_cfg = { .drv_data = dev, };
521 : unsigned quirks;
522 : s32 min, max;
523 : int error;
524 :
525 : if (dev->battery)
526 : return 0; /* already initialized? */
527 :
528 : quirks = find_battery_quirk(dev);
529 :
530 : hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
531 : dev->bus, dev->vendor, dev->product, dev->version, quirks);
532 :
533 : if (quirks & HID_BATTERY_QUIRK_IGNORE)
534 : return 0;
535 :
536 : psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL);
537 : if (!psy_desc)
538 : return -ENOMEM;
539 :
540 : psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery",
541 : strlen(dev->uniq) ?
542 : dev->uniq : dev_name(&dev->dev));
543 : if (!psy_desc->name) {
544 : error = -ENOMEM;
545 : goto err_free_mem;
546 : }
547 :
548 : psy_desc->type = POWER_SUPPLY_TYPE_BATTERY;
549 : psy_desc->properties = hidinput_battery_props;
550 : psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props);
551 : psy_desc->use_for_apm = 0;
552 : psy_desc->get_property = hidinput_get_battery_property;
553 :
554 : min = field->logical_minimum;
555 : max = field->logical_maximum;
556 :
557 : if (is_percentage || (quirks & HID_BATTERY_QUIRK_PERCENT)) {
558 : min = 0;
559 : max = 100;
560 : }
561 :
562 : if (quirks & HID_BATTERY_QUIRK_FEATURE)
563 : report_type = HID_FEATURE_REPORT;
564 :
565 : dev->battery_min = min;
566 : dev->battery_max = max;
567 : dev->battery_report_type = report_type;
568 : dev->battery_report_id = field->report->id;
569 : dev->battery_charge_status = POWER_SUPPLY_STATUS_DISCHARGING;
570 :
571 : /*
572 : * Stylus is normally not connected to the device and thus we
573 : * can't query the device and get meaningful battery strength.
574 : * We have to wait for the device to report it on its own.
575 : */
576 : dev->battery_avoid_query = report_type == HID_INPUT_REPORT &&
577 : field->physical == HID_DG_STYLUS;
578 :
579 : if (quirks & HID_BATTERY_QUIRK_AVOID_QUERY)
580 : dev->battery_avoid_query = true;
581 :
582 : dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg);
583 : if (IS_ERR(dev->battery)) {
584 : error = PTR_ERR(dev->battery);
585 : hid_warn(dev, "can't register power supply: %d\n", error);
586 : goto err_free_name;
587 : }
588 :
589 : power_supply_powers(dev->battery, &dev->dev);
590 : return 0;
591 :
592 : err_free_name:
593 : kfree(psy_desc->name);
594 : err_free_mem:
595 : kfree(psy_desc);
596 : dev->battery = NULL;
597 : return error;
598 : }
599 :
600 : static void hidinput_cleanup_battery(struct hid_device *dev)
601 : {
602 : const struct power_supply_desc *psy_desc;
603 :
604 : if (!dev->battery)
605 : return;
606 :
607 : psy_desc = dev->battery->desc;
608 : power_supply_unregister(dev->battery);
609 : kfree(psy_desc->name);
610 : kfree(psy_desc);
611 : dev->battery = NULL;
612 : }
613 :
614 : static void hidinput_update_battery(struct hid_device *dev, int value)
615 : {
616 : int capacity;
617 :
618 : if (!dev->battery)
619 : return;
620 :
621 : if (value == 0 || value < dev->battery_min || value > dev->battery_max)
622 : return;
623 :
624 : capacity = hidinput_scale_battery_capacity(dev, value);
625 :
626 : if (dev->battery_status != HID_BATTERY_REPORTED ||
627 : capacity != dev->battery_capacity ||
628 : ktime_after(ktime_get_coarse(), dev->battery_ratelimit_time)) {
629 : dev->battery_capacity = capacity;
630 : dev->battery_status = HID_BATTERY_REPORTED;
631 : dev->battery_ratelimit_time =
632 : ktime_add_ms(ktime_get_coarse(), 30 * 1000);
633 : power_supply_changed(dev->battery);
634 : }
635 : }
636 :
637 : static bool hidinput_set_battery_charge_status(struct hid_device *dev,
638 : unsigned int usage, int value)
639 : {
640 : switch (usage) {
641 : case HID_BAT_CHARGING:
642 : dev->battery_charge_status = value ?
643 : POWER_SUPPLY_STATUS_CHARGING :
644 : POWER_SUPPLY_STATUS_DISCHARGING;
645 : return true;
646 : }
647 :
648 : return false;
649 : }
650 : #else /* !CONFIG_HID_BATTERY_STRENGTH */
651 : static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
652 : struct hid_field *field, bool is_percentage)
653 : {
654 : return 0;
655 : }
656 :
657 : static void hidinput_cleanup_battery(struct hid_device *dev)
658 : {
659 : }
660 :
661 : static void hidinput_update_battery(struct hid_device *dev, int value)
662 : {
663 : }
664 :
665 : static bool hidinput_set_battery_charge_status(struct hid_device *dev,
666 : unsigned int usage, int value)
667 : {
668 : return false;
669 : }
670 : #endif /* CONFIG_HID_BATTERY_STRENGTH */
671 :
672 : static bool hidinput_field_in_collection(struct hid_device *device, struct hid_field *field,
673 : unsigned int type, unsigned int usage)
674 : {
675 : struct hid_collection *collection;
676 :
677 0 : collection = &device->collection[field->usage->collection_index];
678 :
679 0 : return collection->type == type && collection->usage == usage;
680 : }
681 :
682 0 : static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
683 : struct hid_usage *usage, unsigned int usage_index)
684 : {
685 0 : struct input_dev *input = hidinput->input;
686 0 : struct hid_device *device = input_get_drvdata(input);
687 0 : const struct usage_priority *usage_priority = NULL;
688 0 : int max = 0, code;
689 0 : unsigned int i = 0;
690 0 : unsigned long *bit = NULL;
691 :
692 0 : field->hidinput = hidinput;
693 :
694 0 : if (field->flags & HID_MAIN_ITEM_CONSTANT)
695 : goto ignore;
696 :
697 : /* Ignore if report count is out of bounds. */
698 0 : if (field->report_count < 1)
699 : goto ignore;
700 :
701 : /* only LED usages are supported in output fields */
702 0 : if (field->report_type == HID_OUTPUT_REPORT &&
703 0 : (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
704 : goto ignore;
705 : }
706 :
707 : /* assign a priority based on the static list declared here */
708 0 : for (i = 0; i < ARRAY_SIZE(hidinput_usages_priorities); i++) {
709 0 : if (usage->hid == hidinput_usages_priorities[i].usage) {
710 0 : usage_priority = &hidinput_usages_priorities[i];
711 :
712 0 : field->usages_priorities[usage_index] =
713 0 : (ARRAY_SIZE(hidinput_usages_priorities) - i) << 8;
714 0 : break;
715 : }
716 : }
717 :
718 : /*
719 : * For slotted devices, we need to also add the slot index
720 : * in the priority.
721 : */
722 0 : if (usage_priority && usage_priority->global)
723 0 : field->usages_priorities[usage_index] |=
724 0 : usage_priority->slot_overwrite;
725 : else
726 0 : field->usages_priorities[usage_index] |=
727 0 : (0xff - field->slot_idx) << 16;
728 :
729 0 : if (device->driver->input_mapping) {
730 0 : int ret = device->driver->input_mapping(device, hidinput, field,
731 : usage, &bit, &max);
732 0 : if (ret > 0)
733 : goto mapped;
734 0 : if (ret < 0)
735 : goto ignore;
736 : }
737 :
738 0 : switch (usage->hid & HID_USAGE_PAGE) {
739 : case HID_UP_UNDEFINED:
740 : goto ignore;
741 :
742 : case HID_UP_KEYBOARD:
743 0 : set_bit(EV_REP, input->evbit);
744 :
745 0 : if ((usage->hid & HID_USAGE) < 256) {
746 0 : if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
747 0 : map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
748 : } else
749 0 : map_key(KEY_UNKNOWN);
750 :
751 : break;
752 :
753 : case HID_UP_BUTTON:
754 0 : code = ((usage->hid - 1) & HID_USAGE);
755 :
756 0 : switch (field->application) {
757 : case HID_GD_MOUSE:
758 0 : case HID_GD_POINTER: code += BTN_MOUSE; break;
759 : case HID_GD_JOYSTICK:
760 0 : if (code <= 0xf)
761 0 : code += BTN_JOYSTICK;
762 : else
763 0 : code += BTN_TRIGGER_HAPPY - 0x10;
764 : break;
765 : case HID_GD_GAMEPAD:
766 0 : if (code <= 0xf)
767 0 : code += BTN_GAMEPAD;
768 : else
769 0 : code += BTN_TRIGGER_HAPPY - 0x10;
770 : break;
771 : case HID_CP_CONSUMER_CONTROL:
772 0 : if (hidinput_field_in_collection(device, field,
773 : HID_COLLECTION_NAMED_ARRAY,
774 : HID_CP_PROGRAMMABLEBUTTONS)) {
775 0 : if (code <= 0x1d)
776 0 : code += KEY_MACRO1;
777 : else
778 0 : code += BTN_TRIGGER_HAPPY - 0x1e;
779 : break;
780 : }
781 : fallthrough;
782 : default:
783 0 : switch (field->physical) {
784 : case HID_GD_MOUSE:
785 0 : case HID_GD_POINTER: code += BTN_MOUSE; break;
786 0 : case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
787 0 : case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break;
788 0 : default: code += BTN_MISC;
789 : }
790 : }
791 :
792 0 : map_key(code);
793 0 : break;
794 :
795 : case HID_UP_SIMULATION:
796 0 : switch (usage->hid & 0xffff) {
797 0 : case 0xba: map_abs(ABS_RUDDER); break;
798 0 : case 0xbb: map_abs(ABS_THROTTLE); break;
799 0 : case 0xc4: map_abs(ABS_GAS); break;
800 0 : case 0xc5: map_abs(ABS_BRAKE); break;
801 0 : case 0xc8: map_abs(ABS_WHEEL); break;
802 : default: goto ignore;
803 : }
804 : break;
805 :
806 : case HID_UP_GENDESK:
807 0 : if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
808 0 : switch (usage->hid & 0xf) {
809 0 : case 0x1: map_key_clear(KEY_POWER); break;
810 0 : case 0x2: map_key_clear(KEY_SLEEP); break;
811 0 : case 0x3: map_key_clear(KEY_WAKEUP); break;
812 0 : case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
813 0 : case 0x5: map_key_clear(KEY_MENU); break;
814 0 : case 0x6: map_key_clear(KEY_PROG1); break;
815 0 : case 0x7: map_key_clear(KEY_HELP); break;
816 0 : case 0x8: map_key_clear(KEY_EXIT); break;
817 0 : case 0x9: map_key_clear(KEY_SELECT); break;
818 0 : case 0xa: map_key_clear(KEY_RIGHT); break;
819 0 : case 0xb: map_key_clear(KEY_LEFT); break;
820 0 : case 0xc: map_key_clear(KEY_UP); break;
821 0 : case 0xd: map_key_clear(KEY_DOWN); break;
822 0 : case 0xe: map_key_clear(KEY_POWER2); break;
823 0 : case 0xf: map_key_clear(KEY_RESTART); break;
824 : default: goto unknown;
825 : }
826 : break;
827 : }
828 :
829 0 : if ((usage->hid & 0xf0) == 0xa0) { /* SystemControl */
830 0 : switch (usage->hid & 0xf) {
831 0 : case 0x9: map_key_clear(KEY_MICMUTE); break;
832 : default: goto ignore;
833 : }
834 0 : break;
835 : }
836 :
837 0 : if ((usage->hid & 0xf0) == 0xb0) { /* SC - Display */
838 0 : switch (usage->hid & 0xf) {
839 0 : case 0x05: map_key_clear(KEY_SWITCHVIDEOMODE); break;
840 : default: goto ignore;
841 : }
842 0 : break;
843 : }
844 :
845 : /*
846 : * Some lazy vendors declare 255 usages for System Control,
847 : * leading to the creation of ABS_X|Y axis and too many others.
848 : * It wouldn't be a problem if joydev doesn't consider the
849 : * device as a joystick then.
850 : */
851 0 : if (field->application == HID_GD_SYSTEM_CONTROL)
852 : goto ignore;
853 :
854 0 : if ((usage->hid & 0xf0) == 0x90) { /* D-pad */
855 0 : switch (usage->hid) {
856 0 : case HID_GD_UP: usage->hat_dir = 1; break;
857 0 : case HID_GD_DOWN: usage->hat_dir = 5; break;
858 0 : case HID_GD_RIGHT: usage->hat_dir = 3; break;
859 0 : case HID_GD_LEFT: usage->hat_dir = 7; break;
860 : default: goto unknown;
861 : }
862 0 : if (field->dpad) {
863 0 : map_abs(field->dpad);
864 0 : goto ignore;
865 : }
866 0 : map_abs(ABS_HAT0X);
867 0 : break;
868 : }
869 :
870 0 : switch (usage->hid) {
871 : /* These usage IDs map directly to the usage codes. */
872 : case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
873 : case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
874 0 : if (field->flags & HID_MAIN_ITEM_RELATIVE)
875 0 : map_rel(usage->hid & 0xf);
876 : else
877 0 : map_abs_clear(usage->hid & 0xf);
878 : break;
879 :
880 : case HID_GD_WHEEL:
881 0 : if (field->flags & HID_MAIN_ITEM_RELATIVE) {
882 0 : set_bit(REL_WHEEL, input->relbit);
883 0 : map_rel(REL_WHEEL_HI_RES);
884 : } else {
885 0 : map_abs(usage->hid & 0xf);
886 : }
887 : break;
888 : case HID_GD_SLIDER: case HID_GD_DIAL:
889 0 : if (field->flags & HID_MAIN_ITEM_RELATIVE)
890 0 : map_rel(usage->hid & 0xf);
891 : else
892 0 : map_abs(usage->hid & 0xf);
893 : break;
894 :
895 : case HID_GD_HATSWITCH:
896 0 : usage->hat_min = field->logical_minimum;
897 0 : usage->hat_max = field->logical_maximum;
898 0 : map_abs(ABS_HAT0X);
899 0 : break;
900 :
901 0 : case HID_GD_START: map_key_clear(BTN_START); break;
902 0 : case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
903 :
904 : case HID_GD_RFKILL_BTN:
905 : /* MS wireless radio ctl extension, also check CA */
906 0 : if (field->application == HID_GD_WIRELESS_RADIO_CTLS) {
907 0 : map_key_clear(KEY_RFKILL);
908 : /* We need to simulate the btn release */
909 0 : field->flags |= HID_MAIN_ITEM_RELATIVE;
910 0 : break;
911 : }
912 : goto unknown;
913 :
914 : default: goto unknown;
915 : }
916 :
917 : break;
918 :
919 : case HID_UP_LED:
920 0 : switch (usage->hid & 0xffff) { /* HID-Value: */
921 0 : case 0x01: map_led (LED_NUML); break; /* "Num Lock" */
922 0 : case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */
923 0 : case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */
924 0 : case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */
925 0 : case 0x05: map_led (LED_KANA); break; /* "Kana" */
926 0 : case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */
927 0 : case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */
928 0 : case 0x09: map_led (LED_MUTE); break; /* "Mute" */
929 0 : case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */
930 0 : case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */
931 0 : case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */
932 :
933 : default: goto ignore;
934 : }
935 : break;
936 :
937 : case HID_UP_DIGITIZER:
938 0 : if ((field->application & 0xff) == 0x01) /* Digitizer */
939 0 : __set_bit(INPUT_PROP_POINTER, input->propbit);
940 0 : else if ((field->application & 0xff) == 0x02) /* Pen */
941 0 : __set_bit(INPUT_PROP_DIRECT, input->propbit);
942 :
943 0 : switch (usage->hid & 0xff) {
944 : case 0x00: /* Undefined */
945 : goto ignore;
946 :
947 : case 0x30: /* TipPressure */
948 0 : if (!test_bit(BTN_TOUCH, input->keybit)) {
949 0 : device->quirks |= HID_QUIRK_NOTOUCH;
950 0 : set_bit(EV_KEY, input->evbit);
951 0 : set_bit(BTN_TOUCH, input->keybit);
952 : }
953 0 : map_abs_clear(ABS_PRESSURE);
954 0 : break;
955 :
956 : case 0x32: /* InRange */
957 0 : switch (field->physical) {
958 : case HID_DG_PUCK:
959 0 : map_key(BTN_TOOL_MOUSE);
960 0 : break;
961 : case HID_DG_FINGER:
962 0 : map_key(BTN_TOOL_FINGER);
963 0 : break;
964 : default:
965 : /*
966 : * If the physical is not given,
967 : * rely on the application.
968 : */
969 0 : if (!field->physical) {
970 0 : switch (field->application) {
971 : case HID_DG_TOUCHSCREEN:
972 : case HID_DG_TOUCHPAD:
973 0 : map_key_clear(BTN_TOOL_FINGER);
974 0 : break;
975 : default:
976 0 : map_key_clear(BTN_TOOL_PEN);
977 : }
978 : } else {
979 0 : map_key(BTN_TOOL_PEN);
980 : }
981 : break;
982 : }
983 : break;
984 :
985 : case 0x3b: /* Battery Strength */
986 0 : hidinput_setup_battery(device, HID_INPUT_REPORT, field, false);
987 0 : usage->type = EV_PWR;
988 0 : return;
989 :
990 : case 0x3c: /* Invert */
991 0 : map_key_clear(BTN_TOOL_RUBBER);
992 0 : break;
993 :
994 : case 0x3d: /* X Tilt */
995 0 : map_abs_clear(ABS_TILT_X);
996 0 : break;
997 :
998 : case 0x3e: /* Y Tilt */
999 0 : map_abs_clear(ABS_TILT_Y);
1000 0 : break;
1001 :
1002 : case 0x33: /* Touch */
1003 : case 0x42: /* TipSwitch */
1004 : case 0x43: /* TipSwitch2 */
1005 0 : device->quirks &= ~HID_QUIRK_NOTOUCH;
1006 0 : map_key_clear(BTN_TOUCH);
1007 0 : break;
1008 :
1009 : case 0x44: /* BarrelSwitch */
1010 0 : map_key_clear(BTN_STYLUS);
1011 0 : break;
1012 :
1013 : case 0x45: /* ERASER */
1014 : /*
1015 : * This event is reported when eraser tip touches the surface.
1016 : * Actual eraser (BTN_TOOL_RUBBER) is set by Invert usage when
1017 : * tool gets in proximity.
1018 : */
1019 0 : map_key_clear(BTN_TOUCH);
1020 0 : break;
1021 :
1022 : case 0x46: /* TabletPick */
1023 : case 0x5a: /* SecondaryBarrelSwitch */
1024 0 : map_key_clear(BTN_STYLUS2);
1025 0 : break;
1026 :
1027 : case 0x5b: /* TransducerSerialNumber */
1028 : case 0x6e: /* TransducerSerialNumber2 */
1029 0 : map_msc(MSC_SERIAL);
1030 0 : break;
1031 :
1032 : default: goto unknown;
1033 : }
1034 : break;
1035 :
1036 : case HID_UP_TELEPHONY:
1037 0 : switch (usage->hid & HID_USAGE) {
1038 0 : case 0x2f: map_key_clear(KEY_MICMUTE); break;
1039 0 : case 0xb0: map_key_clear(KEY_NUMERIC_0); break;
1040 0 : case 0xb1: map_key_clear(KEY_NUMERIC_1); break;
1041 0 : case 0xb2: map_key_clear(KEY_NUMERIC_2); break;
1042 0 : case 0xb3: map_key_clear(KEY_NUMERIC_3); break;
1043 0 : case 0xb4: map_key_clear(KEY_NUMERIC_4); break;
1044 0 : case 0xb5: map_key_clear(KEY_NUMERIC_5); break;
1045 0 : case 0xb6: map_key_clear(KEY_NUMERIC_6); break;
1046 0 : case 0xb7: map_key_clear(KEY_NUMERIC_7); break;
1047 0 : case 0xb8: map_key_clear(KEY_NUMERIC_8); break;
1048 0 : case 0xb9: map_key_clear(KEY_NUMERIC_9); break;
1049 0 : case 0xba: map_key_clear(KEY_NUMERIC_STAR); break;
1050 0 : case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break;
1051 0 : case 0xbc: map_key_clear(KEY_NUMERIC_A); break;
1052 0 : case 0xbd: map_key_clear(KEY_NUMERIC_B); break;
1053 0 : case 0xbe: map_key_clear(KEY_NUMERIC_C); break;
1054 0 : case 0xbf: map_key_clear(KEY_NUMERIC_D); break;
1055 : default: goto ignore;
1056 : }
1057 : break;
1058 :
1059 : case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */
1060 0 : switch (usage->hid & HID_USAGE) {
1061 : case 0x000: goto ignore;
1062 0 : case 0x030: map_key_clear(KEY_POWER); break;
1063 0 : case 0x031: map_key_clear(KEY_RESTART); break;
1064 0 : case 0x032: map_key_clear(KEY_SLEEP); break;
1065 0 : case 0x034: map_key_clear(KEY_SLEEP); break;
1066 0 : case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break;
1067 0 : case 0x036: map_key_clear(BTN_MISC); break;
1068 :
1069 0 : case 0x040: map_key_clear(KEY_MENU); break; /* Menu */
1070 0 : case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */
1071 0 : case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */
1072 0 : case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */
1073 0 : case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */
1074 0 : case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */
1075 0 : case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */
1076 0 : case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */
1077 0 : case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */
1078 :
1079 0 : case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */
1080 0 : case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */
1081 0 : case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */
1082 0 : case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */
1083 0 : case 0x069: map_key_clear(KEY_RED); break;
1084 0 : case 0x06a: map_key_clear(KEY_GREEN); break;
1085 0 : case 0x06b: map_key_clear(KEY_BLUE); break;
1086 0 : case 0x06c: map_key_clear(KEY_YELLOW); break;
1087 0 : case 0x06d: map_key_clear(KEY_ASPECT_RATIO); break;
1088 :
1089 0 : case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break;
1090 0 : case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break;
1091 0 : case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break;
1092 0 : case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break;
1093 0 : case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break;
1094 0 : case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break;
1095 :
1096 0 : case 0x076: map_key_clear(KEY_CAMERA_ACCESS_ENABLE); break;
1097 0 : case 0x077: map_key_clear(KEY_CAMERA_ACCESS_DISABLE); break;
1098 0 : case 0x078: map_key_clear(KEY_CAMERA_ACCESS_TOGGLE); break;
1099 :
1100 0 : case 0x079: map_key_clear(KEY_KBDILLUMUP); break;
1101 0 : case 0x07a: map_key_clear(KEY_KBDILLUMDOWN); break;
1102 0 : case 0x07c: map_key_clear(KEY_KBDILLUMTOGGLE); break;
1103 :
1104 0 : case 0x082: map_key_clear(KEY_VIDEO_NEXT); break;
1105 0 : case 0x083: map_key_clear(KEY_LAST); break;
1106 0 : case 0x084: map_key_clear(KEY_ENTER); break;
1107 0 : case 0x088: map_key_clear(KEY_PC); break;
1108 0 : case 0x089: map_key_clear(KEY_TV); break;
1109 0 : case 0x08a: map_key_clear(KEY_WWW); break;
1110 0 : case 0x08b: map_key_clear(KEY_DVD); break;
1111 0 : case 0x08c: map_key_clear(KEY_PHONE); break;
1112 0 : case 0x08d: map_key_clear(KEY_PROGRAM); break;
1113 0 : case 0x08e: map_key_clear(KEY_VIDEOPHONE); break;
1114 0 : case 0x08f: map_key_clear(KEY_GAMES); break;
1115 0 : case 0x090: map_key_clear(KEY_MEMO); break;
1116 0 : case 0x091: map_key_clear(KEY_CD); break;
1117 0 : case 0x092: map_key_clear(KEY_VCR); break;
1118 0 : case 0x093: map_key_clear(KEY_TUNER); break;
1119 0 : case 0x094: map_key_clear(KEY_EXIT); break;
1120 0 : case 0x095: map_key_clear(KEY_HELP); break;
1121 0 : case 0x096: map_key_clear(KEY_TAPE); break;
1122 0 : case 0x097: map_key_clear(KEY_TV2); break;
1123 0 : case 0x098: map_key_clear(KEY_SAT); break;
1124 0 : case 0x09a: map_key_clear(KEY_PVR); break;
1125 :
1126 0 : case 0x09c: map_key_clear(KEY_CHANNELUP); break;
1127 0 : case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
1128 0 : case 0x0a0: map_key_clear(KEY_VCR2); break;
1129 :
1130 0 : case 0x0b0: map_key_clear(KEY_PLAY); break;
1131 0 : case 0x0b1: map_key_clear(KEY_PAUSE); break;
1132 0 : case 0x0b2: map_key_clear(KEY_RECORD); break;
1133 0 : case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
1134 0 : case 0x0b4: map_key_clear(KEY_REWIND); break;
1135 0 : case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
1136 0 : case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
1137 0 : case 0x0b7: map_key_clear(KEY_STOPCD); break;
1138 0 : case 0x0b8: map_key_clear(KEY_EJECTCD); break;
1139 0 : case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break;
1140 0 : case 0x0b9: map_key_clear(KEY_SHUFFLE); break;
1141 0 : case 0x0bf: map_key_clear(KEY_SLOW); break;
1142 :
1143 0 : case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
1144 0 : case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break;
1145 :
1146 0 : case 0x0d8: map_key_clear(KEY_DICTATE); break;
1147 0 : case 0x0d9: map_key_clear(KEY_EMOJI_PICKER); break;
1148 :
1149 0 : case 0x0e0: map_abs_clear(ABS_VOLUME); break;
1150 0 : case 0x0e2: map_key_clear(KEY_MUTE); break;
1151 0 : case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
1152 0 : case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
1153 0 : case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
1154 0 : case 0x0f5: map_key_clear(KEY_SLOW); break;
1155 :
1156 0 : case 0x181: map_key_clear(KEY_BUTTONCONFIG); break;
1157 0 : case 0x182: map_key_clear(KEY_BOOKMARKS); break;
1158 0 : case 0x183: map_key_clear(KEY_CONFIG); break;
1159 0 : case 0x184: map_key_clear(KEY_WORDPROCESSOR); break;
1160 0 : case 0x185: map_key_clear(KEY_EDITOR); break;
1161 0 : case 0x186: map_key_clear(KEY_SPREADSHEET); break;
1162 0 : case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break;
1163 0 : case 0x188: map_key_clear(KEY_PRESENTATION); break;
1164 0 : case 0x189: map_key_clear(KEY_DATABASE); break;
1165 0 : case 0x18a: map_key_clear(KEY_MAIL); break;
1166 0 : case 0x18b: map_key_clear(KEY_NEWS); break;
1167 0 : case 0x18c: map_key_clear(KEY_VOICEMAIL); break;
1168 0 : case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break;
1169 0 : case 0x18e: map_key_clear(KEY_CALENDAR); break;
1170 0 : case 0x18f: map_key_clear(KEY_TASKMANAGER); break;
1171 0 : case 0x190: map_key_clear(KEY_JOURNAL); break;
1172 0 : case 0x191: map_key_clear(KEY_FINANCE); break;
1173 0 : case 0x192: map_key_clear(KEY_CALC); break;
1174 0 : case 0x193: map_key_clear(KEY_PLAYER); break;
1175 0 : case 0x194: map_key_clear(KEY_FILE); break;
1176 0 : case 0x196: map_key_clear(KEY_WWW); break;
1177 0 : case 0x199: map_key_clear(KEY_CHAT); break;
1178 0 : case 0x19c: map_key_clear(KEY_LOGOFF); break;
1179 0 : case 0x19e: map_key_clear(KEY_COFFEE); break;
1180 0 : case 0x19f: map_key_clear(KEY_CONTROLPANEL); break;
1181 0 : case 0x1a2: map_key_clear(KEY_APPSELECT); break;
1182 0 : case 0x1a3: map_key_clear(KEY_NEXT); break;
1183 0 : case 0x1a4: map_key_clear(KEY_PREVIOUS); break;
1184 0 : case 0x1a6: map_key_clear(KEY_HELP); break;
1185 0 : case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
1186 0 : case 0x1ab: map_key_clear(KEY_SPELLCHECK); break;
1187 0 : case 0x1ae: map_key_clear(KEY_KEYBOARD); break;
1188 0 : case 0x1b1: map_key_clear(KEY_SCREENSAVER); break;
1189 0 : case 0x1b4: map_key_clear(KEY_FILE); break;
1190 0 : case 0x1b6: map_key_clear(KEY_IMAGES); break;
1191 0 : case 0x1b7: map_key_clear(KEY_AUDIO); break;
1192 0 : case 0x1b8: map_key_clear(KEY_VIDEO); break;
1193 0 : case 0x1bc: map_key_clear(KEY_MESSENGER); break;
1194 0 : case 0x1bd: map_key_clear(KEY_INFO); break;
1195 0 : case 0x1cb: map_key_clear(KEY_ASSISTANT); break;
1196 0 : case 0x201: map_key_clear(KEY_NEW); break;
1197 0 : case 0x202: map_key_clear(KEY_OPEN); break;
1198 0 : case 0x203: map_key_clear(KEY_CLOSE); break;
1199 0 : case 0x204: map_key_clear(KEY_EXIT); break;
1200 0 : case 0x207: map_key_clear(KEY_SAVE); break;
1201 0 : case 0x208: map_key_clear(KEY_PRINT); break;
1202 0 : case 0x209: map_key_clear(KEY_PROPS); break;
1203 0 : case 0x21a: map_key_clear(KEY_UNDO); break;
1204 0 : case 0x21b: map_key_clear(KEY_COPY); break;
1205 0 : case 0x21c: map_key_clear(KEY_CUT); break;
1206 0 : case 0x21d: map_key_clear(KEY_PASTE); break;
1207 0 : case 0x21f: map_key_clear(KEY_FIND); break;
1208 0 : case 0x221: map_key_clear(KEY_SEARCH); break;
1209 0 : case 0x222: map_key_clear(KEY_GOTO); break;
1210 0 : case 0x223: map_key_clear(KEY_HOMEPAGE); break;
1211 0 : case 0x224: map_key_clear(KEY_BACK); break;
1212 0 : case 0x225: map_key_clear(KEY_FORWARD); break;
1213 0 : case 0x226: map_key_clear(KEY_STOP); break;
1214 0 : case 0x227: map_key_clear(KEY_REFRESH); break;
1215 0 : case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
1216 0 : case 0x22d: map_key_clear(KEY_ZOOMIN); break;
1217 0 : case 0x22e: map_key_clear(KEY_ZOOMOUT); break;
1218 0 : case 0x22f: map_key_clear(KEY_ZOOMRESET); break;
1219 0 : case 0x232: map_key_clear(KEY_FULL_SCREEN); break;
1220 0 : case 0x233: map_key_clear(KEY_SCROLLUP); break;
1221 0 : case 0x234: map_key_clear(KEY_SCROLLDOWN); break;
1222 : case 0x238: /* AC Pan */
1223 0 : set_bit(REL_HWHEEL, input->relbit);
1224 0 : map_rel(REL_HWHEEL_HI_RES);
1225 0 : break;
1226 0 : case 0x23d: map_key_clear(KEY_EDIT); break;
1227 0 : case 0x25f: map_key_clear(KEY_CANCEL); break;
1228 0 : case 0x269: map_key_clear(KEY_INSERT); break;
1229 0 : case 0x26a: map_key_clear(KEY_DELETE); break;
1230 0 : case 0x279: map_key_clear(KEY_REDO); break;
1231 :
1232 0 : case 0x289: map_key_clear(KEY_REPLY); break;
1233 0 : case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
1234 0 : case 0x28c: map_key_clear(KEY_SEND); break;
1235 :
1236 0 : case 0x29d: map_key_clear(KEY_KBD_LAYOUT_NEXT); break;
1237 :
1238 0 : case 0x2a2: map_key_clear(KEY_ALL_APPLICATIONS); break;
1239 :
1240 0 : case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break;
1241 0 : case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break;
1242 0 : case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break;
1243 0 : case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break;
1244 0 : case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break;
1245 0 : case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break;
1246 :
1247 0 : case 0x29f: map_key_clear(KEY_SCALE); break;
1248 :
1249 0 : default: map_key_clear(KEY_UNKNOWN);
1250 : }
1251 : break;
1252 :
1253 : case HID_UP_GENDEVCTRLS:
1254 0 : switch (usage->hid) {
1255 : case HID_DC_BATTERYSTRENGTH:
1256 0 : hidinput_setup_battery(device, HID_INPUT_REPORT, field, false);
1257 0 : usage->type = EV_PWR;
1258 0 : return;
1259 : }
1260 : goto unknown;
1261 :
1262 : case HID_UP_BATTERY:
1263 0 : switch (usage->hid) {
1264 : case HID_BAT_ABSOLUTESTATEOFCHARGE:
1265 0 : hidinput_setup_battery(device, HID_INPUT_REPORT, field, true);
1266 0 : usage->type = EV_PWR;
1267 0 : return;
1268 : case HID_BAT_CHARGING:
1269 0 : usage->type = EV_PWR;
1270 0 : return;
1271 : }
1272 : goto unknown;
1273 : case HID_UP_CAMERA:
1274 0 : switch (usage->hid & HID_USAGE) {
1275 : case 0x020:
1276 0 : map_key_clear(KEY_CAMERA_FOCUS); break;
1277 : case 0x021:
1278 0 : map_key_clear(KEY_CAMERA); break;
1279 : default:
1280 : goto ignore;
1281 : }
1282 : break;
1283 :
1284 : case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
1285 0 : set_bit(EV_REP, input->evbit);
1286 0 : switch (usage->hid & HID_USAGE) {
1287 0 : case 0x021: map_key_clear(KEY_PRINT); break;
1288 0 : case 0x070: map_key_clear(KEY_HP); break;
1289 0 : case 0x071: map_key_clear(KEY_CAMERA); break;
1290 0 : case 0x072: map_key_clear(KEY_SOUND); break;
1291 0 : case 0x073: map_key_clear(KEY_QUESTION); break;
1292 0 : case 0x080: map_key_clear(KEY_EMAIL); break;
1293 0 : case 0x081: map_key_clear(KEY_CHAT); break;
1294 0 : case 0x082: map_key_clear(KEY_SEARCH); break;
1295 0 : case 0x083: map_key_clear(KEY_CONNECT); break;
1296 0 : case 0x084: map_key_clear(KEY_FINANCE); break;
1297 0 : case 0x085: map_key_clear(KEY_SPORT); break;
1298 0 : case 0x086: map_key_clear(KEY_SHOP); break;
1299 : default: goto ignore;
1300 : }
1301 : break;
1302 :
1303 : case HID_UP_HPVENDOR2:
1304 0 : set_bit(EV_REP, input->evbit);
1305 0 : switch (usage->hid & HID_USAGE) {
1306 0 : case 0x001: map_key_clear(KEY_MICMUTE); break;
1307 0 : case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break;
1308 0 : case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break;
1309 : default: goto ignore;
1310 : }
1311 : break;
1312 :
1313 : case HID_UP_MSVENDOR:
1314 : goto ignore;
1315 :
1316 : case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
1317 0 : set_bit(EV_REP, input->evbit);
1318 : goto ignore;
1319 :
1320 : case HID_UP_LOGIVENDOR:
1321 : /* intentional fallback */
1322 : case HID_UP_LOGIVENDOR2:
1323 : /* intentional fallback */
1324 : case HID_UP_LOGIVENDOR3:
1325 : goto ignore;
1326 :
1327 : case HID_UP_PID:
1328 0 : switch (usage->hid & HID_USAGE) {
1329 0 : case 0xa4: map_key_clear(BTN_DEAD); break;
1330 : default: goto ignore;
1331 : }
1332 0 : break;
1333 :
1334 : default:
1335 : unknown:
1336 0 : if (field->report_size == 1) {
1337 0 : if (field->report->type == HID_OUTPUT_REPORT) {
1338 0 : map_led(LED_MISC);
1339 0 : break;
1340 : }
1341 0 : map_key(BTN_MISC);
1342 0 : break;
1343 : }
1344 0 : if (field->flags & HID_MAIN_ITEM_RELATIVE) {
1345 0 : map_rel(REL_MISC);
1346 0 : break;
1347 : }
1348 0 : map_abs(ABS_MISC);
1349 0 : break;
1350 : }
1351 :
1352 : mapped:
1353 : /* Mapping failed, bail out */
1354 0 : if (!bit)
1355 : return;
1356 :
1357 0 : if (device->driver->input_mapped &&
1358 0 : device->driver->input_mapped(device, hidinput, field, usage,
1359 : &bit, &max) < 0) {
1360 : /*
1361 : * The driver indicated that no further generic handling
1362 : * of the usage is desired.
1363 : */
1364 : return;
1365 : }
1366 :
1367 0 : set_bit(usage->type, input->evbit);
1368 :
1369 : /*
1370 : * This part is *really* controversial:
1371 : * - HID aims at being generic so we should do our best to export
1372 : * all incoming events
1373 : * - HID describes what events are, so there is no reason for ABS_X
1374 : * to be mapped to ABS_Y
1375 : * - HID is using *_MISC+N as a default value, but nothing prevents
1376 : * *_MISC+N to overwrite a legitimate even, which confuses userspace
1377 : * (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different
1378 : * processing)
1379 : *
1380 : * If devices still want to use this (at their own risk), they will
1381 : * have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but
1382 : * the default should be a reliable mapping.
1383 : */
1384 0 : while (usage->code <= max && test_and_set_bit(usage->code, bit)) {
1385 0 : if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) {
1386 0 : usage->code = find_next_zero_bit(bit,
1387 0 : max + 1,
1388 0 : usage->code);
1389 : } else {
1390 0 : device->status |= HID_STAT_DUP_DETECTED;
1391 0 : goto ignore;
1392 : }
1393 : }
1394 :
1395 0 : if (usage->code > max)
1396 : goto ignore;
1397 :
1398 0 : if (usage->type == EV_ABS) {
1399 :
1400 0 : int a = field->logical_minimum;
1401 0 : int b = field->logical_maximum;
1402 :
1403 0 : if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
1404 0 : a = field->logical_minimum = 0;
1405 0 : b = field->logical_maximum = 255;
1406 : }
1407 :
1408 0 : if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
1409 0 : input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
1410 0 : else input_set_abs_params(input, usage->code, a, b, 0, 0);
1411 :
1412 0 : input_abs_set_res(input, usage->code,
1413 0 : hidinput_calc_abs_res(field, usage->code));
1414 :
1415 : /* use a larger default input buffer for MT devices */
1416 0 : if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
1417 0 : input_set_events_per_packet(input, 60);
1418 : }
1419 :
1420 0 : if (usage->type == EV_ABS &&
1421 0 : (usage->hat_min < usage->hat_max || usage->hat_dir)) {
1422 : int i;
1423 0 : for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
1424 0 : input_set_abs_params(input, i, -1, 1, 0, 0);
1425 0 : set_bit(i, input->absbit);
1426 : }
1427 0 : if (usage->hat_dir && !field->dpad)
1428 0 : field->dpad = usage->code;
1429 : }
1430 :
1431 : /* for those devices which produce Consumer volume usage as relative,
1432 : * we emulate pressing volumeup/volumedown appropriate number of times
1433 : * in hidinput_hid_event()
1434 : */
1435 0 : if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1436 0 : (usage->code == ABS_VOLUME)) {
1437 0 : set_bit(KEY_VOLUMEUP, input->keybit);
1438 0 : set_bit(KEY_VOLUMEDOWN, input->keybit);
1439 : }
1440 :
1441 0 : if (usage->type == EV_KEY) {
1442 0 : set_bit(EV_MSC, input->evbit);
1443 0 : set_bit(MSC_SCAN, input->mscbit);
1444 : }
1445 :
1446 : return;
1447 :
1448 : ignore:
1449 0 : usage->type = 0;
1450 0 : usage->code = 0;
1451 : }
1452 :
1453 0 : static void hidinput_handle_scroll(struct hid_usage *usage,
1454 : struct input_dev *input,
1455 : __s32 value)
1456 : {
1457 : int code;
1458 : int hi_res, lo_res;
1459 :
1460 0 : if (value == 0)
1461 : return;
1462 :
1463 0 : if (usage->code == REL_WHEEL_HI_RES)
1464 : code = REL_WHEEL;
1465 : else
1466 0 : code = REL_HWHEEL;
1467 :
1468 : /*
1469 : * Windows reports one wheel click as value 120. Where a high-res
1470 : * scroll wheel is present, a fraction of 120 is reported instead.
1471 : * Our REL_WHEEL_HI_RES axis does the same because all HW must
1472 : * adhere to the 120 expectation.
1473 : */
1474 0 : hi_res = value * 120/usage->resolution_multiplier;
1475 :
1476 0 : usage->wheel_accumulated += hi_res;
1477 0 : lo_res = usage->wheel_accumulated/120;
1478 0 : if (lo_res)
1479 0 : usage->wheel_accumulated -= lo_res * 120;
1480 :
1481 0 : input_event(input, EV_REL, code, lo_res);
1482 0 : input_event(input, EV_REL, usage->code, hi_res);
1483 : }
1484 :
1485 0 : static void hid_report_release_tool(struct hid_report *report, struct input_dev *input,
1486 : unsigned int tool)
1487 : {
1488 : /* if the given tool is not currently reported, ignore */
1489 0 : if (!test_bit(tool, input->key))
1490 : return;
1491 :
1492 : /*
1493 : * if the given tool was previously set, release it,
1494 : * release any TOUCH and send an EV_SYN
1495 : */
1496 0 : input_event(input, EV_KEY, BTN_TOUCH, 0);
1497 0 : input_event(input, EV_KEY, tool, 0);
1498 0 : input_event(input, EV_SYN, SYN_REPORT, 0);
1499 :
1500 0 : report->tool = 0;
1501 : }
1502 :
1503 0 : static void hid_report_set_tool(struct hid_report *report, struct input_dev *input,
1504 : unsigned int new_tool)
1505 : {
1506 0 : if (report->tool != new_tool)
1507 0 : hid_report_release_tool(report, input, report->tool);
1508 :
1509 0 : input_event(input, EV_KEY, new_tool, 1);
1510 0 : report->tool = new_tool;
1511 0 : }
1512 :
1513 0 : void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
1514 : {
1515 : struct input_dev *input;
1516 0 : struct hid_report *report = field->report;
1517 0 : unsigned *quirks = &hid->quirks;
1518 :
1519 0 : if (!usage->type)
1520 : return;
1521 :
1522 0 : if (usage->type == EV_PWR) {
1523 : bool handled = hidinput_set_battery_charge_status(hid, usage->hid, value);
1524 :
1525 : if (!handled)
1526 : hidinput_update_battery(hid, value);
1527 :
1528 : return;
1529 : }
1530 :
1531 0 : if (!field->hidinput)
1532 : return;
1533 :
1534 0 : input = field->hidinput->input;
1535 :
1536 0 : if (usage->hat_min < usage->hat_max || usage->hat_dir) {
1537 0 : int hat_dir = usage->hat_dir;
1538 0 : if (!hat_dir)
1539 0 : hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
1540 0 : if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
1541 0 : input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);
1542 0 : input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
1543 0 : return;
1544 : }
1545 :
1546 : /*
1547 : * Ignore out-of-range values as per HID specification,
1548 : * section 5.10 and 6.2.25, when NULL state bit is present.
1549 : * When it's not, clamp the value to match Microsoft's input
1550 : * driver as mentioned in "Required HID usages for digitizers":
1551 : * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp
1552 : *
1553 : * The logical_minimum < logical_maximum check is done so that we
1554 : * don't unintentionally discard values sent by devices which
1555 : * don't specify logical min and max.
1556 : */
1557 0 : if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
1558 0 : field->logical_minimum < field->logical_maximum) {
1559 0 : if (field->flags & HID_MAIN_ITEM_NULL_STATE &&
1560 0 : (value < field->logical_minimum ||
1561 : value > field->logical_maximum)) {
1562 : dbg_hid("Ignoring out-of-range value %x\n", value);
1563 : return;
1564 : }
1565 0 : value = clamp(value,
1566 : field->logical_minimum,
1567 : field->logical_maximum);
1568 : }
1569 :
1570 0 : switch (usage->hid) {
1571 : case HID_DG_ERASER:
1572 0 : report->tool_active |= !!value;
1573 :
1574 : /*
1575 : * if eraser is set, we must enforce BTN_TOOL_RUBBER
1576 : * to accommodate for devices not following the spec.
1577 : */
1578 0 : if (value)
1579 0 : hid_report_set_tool(report, input, BTN_TOOL_RUBBER);
1580 0 : else if (report->tool != BTN_TOOL_RUBBER)
1581 : /* value is off, tool is not rubber, ignore */
1582 : return;
1583 :
1584 : /* let hid-input set BTN_TOUCH */
1585 : break;
1586 :
1587 : case HID_DG_INVERT:
1588 0 : report->tool_active |= !!value;
1589 :
1590 : /*
1591 : * If invert is set, we store BTN_TOOL_RUBBER.
1592 : */
1593 0 : if (value)
1594 0 : hid_report_set_tool(report, input, BTN_TOOL_RUBBER);
1595 0 : else if (!report->tool_active)
1596 : /* tool_active not set means Invert and Eraser are not set */
1597 0 : hid_report_release_tool(report, input, BTN_TOOL_RUBBER);
1598 :
1599 : /* no further processing */
1600 : return;
1601 :
1602 : case HID_DG_INRANGE:
1603 0 : report->tool_active |= !!value;
1604 :
1605 0 : if (report->tool_active) {
1606 : /*
1607 : * if tool is not set but is marked as active,
1608 : * assume ours
1609 : */
1610 0 : if (!report->tool)
1611 0 : report->tool = usage->code;
1612 :
1613 : /* drivers may have changed the value behind our back, resend it */
1614 0 : hid_report_set_tool(report, input, report->tool);
1615 : } else {
1616 0 : hid_report_release_tool(report, input, usage->code);
1617 : }
1618 :
1619 : /* reset tool_active for the next event */
1620 0 : report->tool_active = false;
1621 :
1622 : /* no further processing */
1623 0 : return;
1624 :
1625 : case HID_DG_TIPSWITCH:
1626 0 : report->tool_active |= !!value;
1627 :
1628 : /* if tool is set to RUBBER we should ignore the current value */
1629 0 : if (report->tool == BTN_TOOL_RUBBER)
1630 : return;
1631 :
1632 : break;
1633 :
1634 : case HID_DG_TIPPRESSURE:
1635 0 : if (*quirks & HID_QUIRK_NOTOUCH) {
1636 0 : int a = field->logical_minimum;
1637 0 : int b = field->logical_maximum;
1638 :
1639 0 : if (value > a + ((b - a) >> 3)) {
1640 0 : input_event(input, EV_KEY, BTN_TOUCH, 1);
1641 0 : report->tool_active = true;
1642 : }
1643 : }
1644 : break;
1645 :
1646 : case HID_UP_PID | 0x83UL: /* Simultaneous Effects Max */
1647 : dbg_hid("Maximum Effects - %d\n",value);
1648 : return;
1649 :
1650 : case HID_UP_PID | 0x7fUL:
1651 : dbg_hid("PID Pool Report\n");
1652 : return;
1653 : }
1654 :
1655 0 : switch (usage->type) {
1656 : case EV_KEY:
1657 0 : if (usage->code == 0) /* Key 0 is "unassigned", not KEY_UNKNOWN */
1658 : return;
1659 : break;
1660 :
1661 : case EV_REL:
1662 0 : if (usage->code == REL_WHEEL_HI_RES ||
1663 : usage->code == REL_HWHEEL_HI_RES) {
1664 0 : hidinput_handle_scroll(usage, input, value);
1665 0 : return;
1666 : }
1667 : break;
1668 :
1669 : case EV_ABS:
1670 0 : if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
1671 0 : usage->code == ABS_VOLUME) {
1672 0 : int count = abs(value);
1673 0 : int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
1674 : int i;
1675 :
1676 0 : for (i = 0; i < count; i++) {
1677 0 : input_event(input, EV_KEY, direction, 1);
1678 0 : input_sync(input);
1679 0 : input_event(input, EV_KEY, direction, 0);
1680 0 : input_sync(input);
1681 : }
1682 : return;
1683 :
1684 0 : } else if (((*quirks & HID_QUIRK_X_INVERT) && usage->code == ABS_X) ||
1685 0 : ((*quirks & HID_QUIRK_Y_INVERT) && usage->code == ABS_Y))
1686 0 : value = field->logical_maximum - value;
1687 : break;
1688 : }
1689 :
1690 : /*
1691 : * Ignore reports for absolute data if the data didn't change. This is
1692 : * not only an optimization but also fixes 'dead' key reports. Some
1693 : * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID
1694 : * 0x31 and 0x32) report multiple keys, even though a localized keyboard
1695 : * can only have one of them physically available. The 'dead' keys
1696 : * report constant 0. As all map to the same keycode, they'd confuse
1697 : * the input layer. If we filter the 'dead' keys on the HID level, we
1698 : * skip the keycode translation and only forward real events.
1699 : */
1700 0 : if (!(field->flags & (HID_MAIN_ITEM_RELATIVE |
1701 0 : HID_MAIN_ITEM_BUFFERED_BYTE)) &&
1702 0 : (field->flags & HID_MAIN_ITEM_VARIABLE) &&
1703 0 : usage->usage_index < field->maxusage &&
1704 0 : value == field->value[usage->usage_index])
1705 : return;
1706 :
1707 : /* report the usage code as scancode if the key status has changed */
1708 0 : if (usage->type == EV_KEY &&
1709 0 : (!test_bit(usage->code, input->key)) == value)
1710 0 : input_event(input, EV_MSC, MSC_SCAN, usage->hid);
1711 :
1712 0 : input_event(input, usage->type, usage->code, value);
1713 :
1714 0 : if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
1715 0 : usage->type == EV_KEY && value) {
1716 0 : input_sync(input);
1717 0 : input_event(input, usage->type, usage->code, 0);
1718 : }
1719 : }
1720 :
1721 0 : void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1722 : {
1723 : struct hid_input *hidinput;
1724 :
1725 0 : if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1726 : return;
1727 :
1728 0 : list_for_each_entry(hidinput, &hid->inputs, list)
1729 0 : input_sync(hidinput->input);
1730 : }
1731 : EXPORT_SYMBOL_GPL(hidinput_report_event);
1732 :
1733 0 : static int hidinput_find_field(struct hid_device *hid, unsigned int type,
1734 : unsigned int code, struct hid_field **field)
1735 : {
1736 : struct hid_report *report;
1737 : int i, j;
1738 :
1739 0 : list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1740 0 : for (i = 0; i < report->maxfield; i++) {
1741 0 : *field = report->field[i];
1742 0 : for (j = 0; j < (*field)->maxusage; j++)
1743 0 : if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1744 : return j;
1745 : }
1746 : }
1747 : return -1;
1748 : }
1749 :
1750 0 : struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1751 : {
1752 : struct hid_report *report;
1753 : struct hid_field *field;
1754 : int i, j;
1755 :
1756 0 : list_for_each_entry(report,
1757 : &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1758 : list) {
1759 0 : for (i = 0; i < report->maxfield; i++) {
1760 0 : field = report->field[i];
1761 0 : for (j = 0; j < field->maxusage; j++)
1762 0 : if (field->usage[j].type == EV_LED)
1763 : return field;
1764 : }
1765 : }
1766 : return NULL;
1767 : }
1768 : EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1769 :
1770 0 : unsigned int hidinput_count_leds(struct hid_device *hid)
1771 : {
1772 : struct hid_report *report;
1773 : struct hid_field *field;
1774 : int i, j;
1775 0 : unsigned int count = 0;
1776 :
1777 0 : list_for_each_entry(report,
1778 : &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1779 : list) {
1780 0 : for (i = 0; i < report->maxfield; i++) {
1781 0 : field = report->field[i];
1782 0 : for (j = 0; j < field->maxusage; j++)
1783 0 : if (field->usage[j].type == EV_LED &&
1784 0 : field->value[j])
1785 0 : count += 1;
1786 : }
1787 : }
1788 0 : return count;
1789 : }
1790 : EXPORT_SYMBOL_GPL(hidinput_count_leds);
1791 :
1792 0 : static void hidinput_led_worker(struct work_struct *work)
1793 : {
1794 0 : struct hid_device *hid = container_of(work, struct hid_device,
1795 : led_work);
1796 : struct hid_field *field;
1797 : struct hid_report *report;
1798 : int ret;
1799 : u32 len;
1800 : __u8 *buf;
1801 :
1802 0 : field = hidinput_get_led_field(hid);
1803 0 : if (!field)
1804 : return;
1805 :
1806 : /*
1807 : * field->report is accessed unlocked regarding HID core. So there might
1808 : * be another incoming SET-LED request from user-space, which changes
1809 : * the LED state while we assemble our outgoing buffer. However, this
1810 : * doesn't matter as hid_output_report() correctly converts it into a
1811 : * boolean value no matter what information is currently set on the LED
1812 : * field (even garbage). So the remote device will always get a valid
1813 : * request.
1814 : * And in case we send a wrong value, a next led worker is spawned
1815 : * for every SET-LED request so the following worker will send the
1816 : * correct value, guaranteed!
1817 : */
1818 :
1819 0 : report = field->report;
1820 :
1821 : /* use custom SET_REPORT request if possible (asynchronous) */
1822 0 : if (hid->ll_driver->request)
1823 0 : return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT);
1824 :
1825 : /* fall back to generic raw-output-report */
1826 0 : len = hid_report_len(report);
1827 0 : buf = hid_alloc_report_buf(report, GFP_KERNEL);
1828 0 : if (!buf)
1829 : return;
1830 :
1831 0 : hid_output_report(report, buf);
1832 : /* synchronous output report */
1833 0 : ret = hid_hw_output_report(hid, buf, len);
1834 0 : if (ret == -ENOSYS)
1835 0 : hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT,
1836 : HID_REQ_SET_REPORT);
1837 0 : kfree(buf);
1838 : }
1839 :
1840 0 : static int hidinput_input_event(struct input_dev *dev, unsigned int type,
1841 : unsigned int code, int value)
1842 : {
1843 0 : struct hid_device *hid = input_get_drvdata(dev);
1844 : struct hid_field *field;
1845 : int offset;
1846 :
1847 0 : if (type == EV_FF)
1848 0 : return input_ff_event(dev, type, code, value);
1849 :
1850 0 : if (type != EV_LED)
1851 : return -1;
1852 :
1853 0 : if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
1854 0 : hid_warn(dev, "event field not found\n");
1855 0 : return -1;
1856 : }
1857 :
1858 0 : hid_set_field(field, offset, value);
1859 :
1860 0 : schedule_work(&hid->led_work);
1861 0 : return 0;
1862 : }
1863 :
1864 0 : static int hidinput_open(struct input_dev *dev)
1865 : {
1866 0 : struct hid_device *hid = input_get_drvdata(dev);
1867 :
1868 0 : return hid_hw_open(hid);
1869 : }
1870 :
1871 0 : static void hidinput_close(struct input_dev *dev)
1872 : {
1873 0 : struct hid_device *hid = input_get_drvdata(dev);
1874 :
1875 0 : hid_hw_close(hid);
1876 0 : }
1877 :
1878 0 : static bool __hidinput_change_resolution_multipliers(struct hid_device *hid,
1879 : struct hid_report *report, bool use_logical_max)
1880 : {
1881 : struct hid_usage *usage;
1882 0 : bool update_needed = false;
1883 0 : bool get_report_completed = false;
1884 : int i, j;
1885 :
1886 0 : if (report->maxfield == 0)
1887 : return false;
1888 :
1889 0 : for (i = 0; i < report->maxfield; i++) {
1890 0 : __s32 value = use_logical_max ?
1891 0 : report->field[i]->logical_maximum :
1892 0 : report->field[i]->logical_minimum;
1893 :
1894 : /* There is no good reason for a Resolution
1895 : * Multiplier to have a count other than 1.
1896 : * Ignore that case.
1897 : */
1898 0 : if (report->field[i]->report_count != 1)
1899 0 : continue;
1900 :
1901 0 : for (j = 0; j < report->field[i]->maxusage; j++) {
1902 0 : usage = &report->field[i]->usage[j];
1903 :
1904 0 : if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER)
1905 0 : continue;
1906 :
1907 : /*
1908 : * If we have more than one feature within this
1909 : * report we need to fill in the bits from the
1910 : * others before we can overwrite the ones for the
1911 : * Resolution Multiplier.
1912 : *
1913 : * But if we're not allowed to read from the device,
1914 : * we just bail. Such a device should not exist
1915 : * anyway.
1916 : */
1917 0 : if (!get_report_completed && report->maxfield > 1) {
1918 0 : if (hid->quirks & HID_QUIRK_NO_INIT_REPORTS)
1919 : return update_needed;
1920 :
1921 0 : hid_hw_request(hid, report, HID_REQ_GET_REPORT);
1922 : hid_hw_wait(hid);
1923 : get_report_completed = true;
1924 : }
1925 :
1926 0 : report->field[i]->value[j] = value;
1927 0 : update_needed = true;
1928 : }
1929 : }
1930 :
1931 : return update_needed;
1932 : }
1933 :
1934 0 : static void hidinput_change_resolution_multipliers(struct hid_device *hid)
1935 : {
1936 : struct hid_report_enum *rep_enum;
1937 : struct hid_report *rep;
1938 : int ret;
1939 :
1940 0 : rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1941 0 : list_for_each_entry(rep, &rep_enum->report_list, list) {
1942 0 : bool update_needed = __hidinput_change_resolution_multipliers(hid,
1943 : rep, true);
1944 :
1945 0 : if (update_needed) {
1946 0 : ret = __hid_request(hid, rep, HID_REQ_SET_REPORT);
1947 0 : if (ret) {
1948 0 : __hidinput_change_resolution_multipliers(hid,
1949 : rep, false);
1950 0 : return;
1951 : }
1952 : }
1953 : }
1954 :
1955 : /* refresh our structs */
1956 0 : hid_setup_resolution_multiplier(hid);
1957 : }
1958 :
1959 0 : static void report_features(struct hid_device *hid)
1960 : {
1961 0 : struct hid_driver *drv = hid->driver;
1962 : struct hid_report_enum *rep_enum;
1963 : struct hid_report *rep;
1964 : struct hid_usage *usage;
1965 : int i, j;
1966 :
1967 0 : rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1968 0 : list_for_each_entry(rep, &rep_enum->report_list, list)
1969 0 : for (i = 0; i < rep->maxfield; i++) {
1970 : /* Ignore if report count is out of bounds. */
1971 0 : if (rep->field[i]->report_count < 1)
1972 0 : continue;
1973 :
1974 0 : for (j = 0; j < rep->field[i]->maxusage; j++) {
1975 0 : usage = &rep->field[i]->usage[j];
1976 :
1977 : /* Verify if Battery Strength feature is available */
1978 : if (usage->hid == HID_DC_BATTERYSTRENGTH)
1979 : hidinput_setup_battery(hid, HID_FEATURE_REPORT,
1980 : rep->field[i], false);
1981 :
1982 0 : if (drv->feature_mapping)
1983 0 : drv->feature_mapping(hid, rep->field[i], usage);
1984 : }
1985 : }
1986 0 : }
1987 :
1988 0 : static struct hid_input *hidinput_allocate(struct hid_device *hid,
1989 : unsigned int application)
1990 : {
1991 0 : struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1992 0 : struct input_dev *input_dev = input_allocate_device();
1993 0 : const char *suffix = NULL;
1994 : size_t suffix_len, name_len;
1995 :
1996 0 : if (!hidinput || !input_dev)
1997 : goto fail;
1998 :
1999 0 : if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) &&
2000 0 : hid->maxapplication > 1) {
2001 0 : switch (application) {
2002 : case HID_GD_KEYBOARD:
2003 0 : suffix = "Keyboard";
2004 0 : break;
2005 : case HID_GD_KEYPAD:
2006 0 : suffix = "Keypad";
2007 0 : break;
2008 : case HID_GD_MOUSE:
2009 0 : suffix = "Mouse";
2010 0 : break;
2011 : case HID_DG_PEN:
2012 : /*
2013 : * yes, there is an issue here:
2014 : * DG_PEN -> "Stylus"
2015 : * DG_STYLUS -> "Pen"
2016 : * But changing this now means users with config snippets
2017 : * will have to change it and the test suite will not be happy.
2018 : */
2019 0 : suffix = "Stylus";
2020 0 : break;
2021 : case HID_DG_STYLUS:
2022 0 : suffix = "Pen";
2023 0 : break;
2024 : case HID_DG_TOUCHSCREEN:
2025 0 : suffix = "Touchscreen";
2026 0 : break;
2027 : case HID_DG_TOUCHPAD:
2028 0 : suffix = "Touchpad";
2029 0 : break;
2030 : case HID_GD_SYSTEM_CONTROL:
2031 0 : suffix = "System Control";
2032 0 : break;
2033 : case HID_CP_CONSUMER_CONTROL:
2034 0 : suffix = "Consumer Control";
2035 0 : break;
2036 : case HID_GD_WIRELESS_RADIO_CTLS:
2037 0 : suffix = "Wireless Radio Control";
2038 0 : break;
2039 : case HID_GD_SYSTEM_MULTIAXIS:
2040 0 : suffix = "System Multi Axis";
2041 0 : break;
2042 : default:
2043 : break;
2044 : }
2045 : }
2046 :
2047 0 : if (suffix) {
2048 0 : name_len = strlen(hid->name);
2049 0 : suffix_len = strlen(suffix);
2050 0 : if ((name_len < suffix_len) ||
2051 0 : strcmp(hid->name + name_len - suffix_len, suffix)) {
2052 0 : hidinput->name = kasprintf(GFP_KERNEL, "%s %s",
2053 : hid->name, suffix);
2054 0 : if (!hidinput->name)
2055 : goto fail;
2056 : }
2057 : }
2058 :
2059 0 : input_set_drvdata(input_dev, hid);
2060 0 : input_dev->event = hidinput_input_event;
2061 0 : input_dev->open = hidinput_open;
2062 0 : input_dev->close = hidinput_close;
2063 0 : input_dev->setkeycode = hidinput_setkeycode;
2064 0 : input_dev->getkeycode = hidinput_getkeycode;
2065 :
2066 0 : input_dev->name = hidinput->name ? hidinput->name : hid->name;
2067 0 : input_dev->phys = hid->phys;
2068 0 : input_dev->uniq = hid->uniq;
2069 0 : input_dev->id.bustype = hid->bus;
2070 0 : input_dev->id.vendor = hid->vendor;
2071 0 : input_dev->id.product = hid->product;
2072 0 : input_dev->id.version = hid->version;
2073 0 : input_dev->dev.parent = &hid->dev;
2074 :
2075 0 : hidinput->input = input_dev;
2076 0 : hidinput->application = application;
2077 0 : list_add_tail(&hidinput->list, &hid->inputs);
2078 :
2079 0 : INIT_LIST_HEAD(&hidinput->reports);
2080 :
2081 0 : return hidinput;
2082 :
2083 : fail:
2084 0 : kfree(hidinput);
2085 0 : input_free_device(input_dev);
2086 0 : hid_err(hid, "Out of memory during hid input probe\n");
2087 0 : return NULL;
2088 : }
2089 :
2090 0 : static bool hidinput_has_been_populated(struct hid_input *hidinput)
2091 : {
2092 : int i;
2093 0 : unsigned long r = 0;
2094 :
2095 0 : for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++)
2096 0 : r |= hidinput->input->evbit[i];
2097 :
2098 0 : for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++)
2099 0 : r |= hidinput->input->keybit[i];
2100 :
2101 0 : for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++)
2102 0 : r |= hidinput->input->relbit[i];
2103 :
2104 0 : for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++)
2105 0 : r |= hidinput->input->absbit[i];
2106 :
2107 0 : for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++)
2108 0 : r |= hidinput->input->mscbit[i];
2109 :
2110 0 : for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++)
2111 0 : r |= hidinput->input->ledbit[i];
2112 :
2113 0 : for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++)
2114 0 : r |= hidinput->input->sndbit[i];
2115 :
2116 0 : for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++)
2117 0 : r |= hidinput->input->ffbit[i];
2118 :
2119 0 : for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++)
2120 0 : r |= hidinput->input->swbit[i];
2121 :
2122 0 : return !!r;
2123 : }
2124 :
2125 0 : static void hidinput_cleanup_hidinput(struct hid_device *hid,
2126 : struct hid_input *hidinput)
2127 : {
2128 : struct hid_report *report;
2129 : int i, k;
2130 :
2131 0 : list_del(&hidinput->list);
2132 0 : input_free_device(hidinput->input);
2133 0 : kfree(hidinput->name);
2134 :
2135 0 : for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
2136 0 : if (k == HID_OUTPUT_REPORT &&
2137 0 : hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
2138 0 : continue;
2139 :
2140 0 : list_for_each_entry(report, &hid->report_enum[k].report_list,
2141 : list) {
2142 :
2143 0 : for (i = 0; i < report->maxfield; i++)
2144 0 : if (report->field[i]->hidinput == hidinput)
2145 0 : report->field[i]->hidinput = NULL;
2146 : }
2147 : }
2148 :
2149 0 : kfree(hidinput);
2150 0 : }
2151 :
2152 : static struct hid_input *hidinput_match(struct hid_report *report)
2153 : {
2154 0 : struct hid_device *hid = report->device;
2155 : struct hid_input *hidinput;
2156 :
2157 0 : list_for_each_entry(hidinput, &hid->inputs, list) {
2158 0 : if (hidinput->report &&
2159 0 : hidinput->report->id == report->id)
2160 : return hidinput;
2161 : }
2162 :
2163 : return NULL;
2164 : }
2165 :
2166 : static struct hid_input *hidinput_match_application(struct hid_report *report)
2167 : {
2168 0 : struct hid_device *hid = report->device;
2169 : struct hid_input *hidinput;
2170 :
2171 0 : list_for_each_entry(hidinput, &hid->inputs, list) {
2172 0 : if (hidinput->application == report->application)
2173 : return hidinput;
2174 :
2175 : /*
2176 : * Keep SystemControl and ConsumerControl applications together
2177 : * with the main keyboard, if present.
2178 : */
2179 0 : if ((report->application == HID_GD_SYSTEM_CONTROL ||
2180 0 : report->application == HID_CP_CONSUMER_CONTROL) &&
2181 : hidinput->application == HID_GD_KEYBOARD) {
2182 : return hidinput;
2183 : }
2184 : }
2185 :
2186 : return NULL;
2187 : }
2188 :
2189 0 : static inline void hidinput_configure_usages(struct hid_input *hidinput,
2190 : struct hid_report *report)
2191 : {
2192 : int i, j, k;
2193 0 : int first_field_index = 0;
2194 0 : int slot_collection_index = -1;
2195 0 : int prev_collection_index = -1;
2196 0 : unsigned int slot_idx = 0;
2197 : struct hid_field *field;
2198 :
2199 : /*
2200 : * First tag all the fields that are part of a slot,
2201 : * a slot needs to have one Contact ID in the collection
2202 : */
2203 0 : for (i = 0; i < report->maxfield; i++) {
2204 0 : field = report->field[i];
2205 :
2206 : /* ignore fields without usage */
2207 0 : if (field->maxusage < 1)
2208 0 : continue;
2209 :
2210 : /*
2211 : * janitoring when collection_index changes
2212 : */
2213 0 : if (prev_collection_index != field->usage->collection_index) {
2214 0 : prev_collection_index = field->usage->collection_index;
2215 0 : first_field_index = i;
2216 : }
2217 :
2218 : /*
2219 : * if we already found a Contact ID in the collection,
2220 : * tag and continue to the next.
2221 : */
2222 0 : if (slot_collection_index == field->usage->collection_index) {
2223 0 : field->slot_idx = slot_idx;
2224 0 : continue;
2225 : }
2226 :
2227 : /* check if the current field has Contact ID */
2228 0 : for (j = 0; j < field->maxusage; j++) {
2229 0 : if (field->usage[j].hid == HID_DG_CONTACTID) {
2230 0 : slot_collection_index = field->usage->collection_index;
2231 0 : slot_idx++;
2232 :
2233 : /*
2234 : * mark all previous fields and this one in the
2235 : * current collection to be slotted.
2236 : */
2237 0 : for (k = first_field_index; k <= i; k++)
2238 0 : report->field[k]->slot_idx = slot_idx;
2239 : break;
2240 : }
2241 : }
2242 : }
2243 :
2244 0 : for (i = 0; i < report->maxfield; i++)
2245 0 : for (j = 0; j < report->field[i]->maxusage; j++)
2246 0 : hidinput_configure_usage(hidinput, report->field[i],
2247 0 : report->field[i]->usage + j,
2248 : j);
2249 0 : }
2250 :
2251 : /*
2252 : * Register the input device; print a message.
2253 : * Configure the input layer interface
2254 : * Read all reports and initialize the absolute field values.
2255 : */
2256 :
2257 0 : int hidinput_connect(struct hid_device *hid, unsigned int force)
2258 : {
2259 0 : struct hid_driver *drv = hid->driver;
2260 : struct hid_report *report;
2261 0 : struct hid_input *next, *hidinput = NULL;
2262 : unsigned int application;
2263 : int i, k;
2264 :
2265 0 : INIT_LIST_HEAD(&hid->inputs);
2266 0 : INIT_WORK(&hid->led_work, hidinput_led_worker);
2267 :
2268 0 : hid->status &= ~HID_STAT_DUP_DETECTED;
2269 :
2270 0 : if (!force) {
2271 0 : for (i = 0; i < hid->maxcollection; i++) {
2272 0 : struct hid_collection *col = &hid->collection[i];
2273 0 : if (col->type == HID_COLLECTION_APPLICATION ||
2274 : col->type == HID_COLLECTION_PHYSICAL)
2275 0 : if (IS_INPUT_APPLICATION(col->usage))
2276 : break;
2277 : }
2278 :
2279 0 : if (i == hid->maxcollection)
2280 : return -1;
2281 : }
2282 :
2283 0 : report_features(hid);
2284 :
2285 0 : for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
2286 0 : if (k == HID_OUTPUT_REPORT &&
2287 0 : hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
2288 0 : continue;
2289 :
2290 0 : list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
2291 :
2292 0 : if (!report->maxfield)
2293 0 : continue;
2294 :
2295 0 : application = report->application;
2296 :
2297 : /*
2298 : * Find the previous hidinput report attached
2299 : * to this report id.
2300 : */
2301 0 : if (hid->quirks & HID_QUIRK_MULTI_INPUT)
2302 0 : hidinput = hidinput_match(report);
2303 0 : else if (hid->maxapplication > 1 &&
2304 : (hid->quirks & HID_QUIRK_INPUT_PER_APP))
2305 0 : hidinput = hidinput_match_application(report);
2306 :
2307 0 : if (!hidinput) {
2308 0 : hidinput = hidinput_allocate(hid, application);
2309 0 : if (!hidinput)
2310 : goto out_unwind;
2311 : }
2312 :
2313 0 : hidinput_configure_usages(hidinput, report);
2314 :
2315 0 : if (hid->quirks & HID_QUIRK_MULTI_INPUT)
2316 0 : hidinput->report = report;
2317 :
2318 0 : list_add_tail(&report->hidinput_list,
2319 : &hidinput->reports);
2320 : }
2321 : }
2322 :
2323 0 : hidinput_change_resolution_multipliers(hid);
2324 :
2325 0 : list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
2326 0 : if (drv->input_configured &&
2327 0 : drv->input_configured(hid, hidinput))
2328 : goto out_unwind;
2329 :
2330 0 : if (!hidinput_has_been_populated(hidinput)) {
2331 : /* no need to register an input device not populated */
2332 0 : hidinput_cleanup_hidinput(hid, hidinput);
2333 0 : continue;
2334 : }
2335 :
2336 0 : if (input_register_device(hidinput->input))
2337 : goto out_unwind;
2338 0 : hidinput->registered = true;
2339 : }
2340 :
2341 0 : if (list_empty(&hid->inputs)) {
2342 0 : hid_err(hid, "No inputs registered, leaving\n");
2343 0 : goto out_unwind;
2344 : }
2345 :
2346 : if (hid->status & HID_STAT_DUP_DETECTED)
2347 : hid_dbg(hid,
2348 : "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n");
2349 :
2350 : return 0;
2351 :
2352 : out_unwind:
2353 : /* unwind the ones we already registered */
2354 0 : hidinput_disconnect(hid);
2355 :
2356 0 : return -1;
2357 : }
2358 : EXPORT_SYMBOL_GPL(hidinput_connect);
2359 :
2360 0 : void hidinput_disconnect(struct hid_device *hid)
2361 : {
2362 : struct hid_input *hidinput, *next;
2363 :
2364 0 : hidinput_cleanup_battery(hid);
2365 :
2366 0 : list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
2367 0 : list_del(&hidinput->list);
2368 0 : if (hidinput->registered)
2369 0 : input_unregister_device(hidinput->input);
2370 : else
2371 0 : input_free_device(hidinput->input);
2372 0 : kfree(hidinput->name);
2373 0 : kfree(hidinput);
2374 : }
2375 :
2376 : /* led_work is spawned by input_dev callbacks, but doesn't access the
2377 : * parent input_dev at all. Once all input devices are removed, we
2378 : * know that led_work will never get restarted, so we can cancel it
2379 : * synchronously and are safe. */
2380 0 : cancel_work_sync(&hid->led_work);
2381 0 : }
2382 : EXPORT_SYMBOL_GPL(hidinput_disconnect);
2383 :
2384 : #ifdef CONFIG_HID_KUNIT_TEST
2385 : #include "hid-input-test.c"
2386 : #endif
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