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3bea733a 1/*
4104d13f 2 * drivers/input/tablet/wacom_sys.c
3bea733a 3 *
232f5693 4 * USB Wacom tablet support - system specific code
3bea733a
PC
5 */
6
7/*
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 */
13
3bea733a 14#include "wacom_wac.h"
51269fe8 15#include "wacom.h"
b58ba1ba 16#include <linux/input/mt.h>
3bea733a 17
a417ea44 18#define WAC_MSG_RETRIES 5
5d7e7d47
EH
19#define WAC_CMD_RETRIES 10
20
e0984bc3
PC
21#define DEV_ATTR_RW_PERM (S_IRUGO | S_IWUSR | S_IWGRP)
22#define DEV_ATTR_WO_PERM (S_IWUSR | S_IWGRP)
72b236d6 23#define DEV_ATTR_RO_PERM (S_IRUSR | S_IRGRP)
e0984bc3 24
c64d8834
PC
25static int wacom_get_report(struct hid_device *hdev, u8 type, u8 *buf,
26 size_t size, unsigned int retries)
3bea733a 27{
5d7e7d47
EH
28 int retval;
29
30 do {
c64d8834 31 retval = hid_hw_raw_request(hdev, buf[0], buf, size, type,
27b20a9d 32 HID_REQ_GET_REPORT);
aef3156d
JG
33 } while ((retval == -ETIMEDOUT || retval == -EAGAIN) && --retries);
34
35 if (retval < 0)
36 hid_err(hdev, "wacom_get_report: ran out of retries "
37 "(last error = %d)\n", retval);
5d7e7d47
EH
38
39 return retval;
3bea733a
PC
40}
41
296b7378
PF
42static int wacom_set_report(struct hid_device *hdev, u8 type, u8 *buf,
43 size_t size, unsigned int retries)
3bea733a 44{
5d7e7d47
EH
45 int retval;
46
47 do {
296b7378 48 retval = hid_hw_raw_request(hdev, buf[0], buf, size, type,
27b20a9d 49 HID_REQ_SET_REPORT);
aef3156d
JG
50 } while ((retval == -ETIMEDOUT || retval == -EAGAIN) && --retries);
51
52 if (retval < 0)
53 hid_err(hdev, "wacom_set_report: ran out of retries "
54 "(last error = %d)\n", retval);
5d7e7d47
EH
55
56 return retval;
3bea733a
PC
57}
58
29b47391
BT
59static int wacom_raw_event(struct hid_device *hdev, struct hid_report *report,
60 u8 *raw_data, int size)
3bea733a 61{
29b47391 62 struct wacom *wacom = hid_get_drvdata(hdev);
3bea733a 63
29b47391
BT
64 if (size > WACOM_PKGLEN_MAX)
65 return 1;
3bea733a 66
29b47391 67 memcpy(wacom->wacom_wac.data, raw_data, size);
3bea733a 68
29b47391
BT
69 wacom_wac_irq(&wacom->wacom_wac, size);
70
71 return 0;
3bea733a
PC
72}
73
3bea733a
PC
74static int wacom_open(struct input_dev *dev)
75{
7791bdae 76 struct wacom *wacom = input_get_drvdata(dev);
29b47391 77
dff67416 78 return hid_hw_open(wacom->hdev);
3bea733a
PC
79}
80
81static void wacom_close(struct input_dev *dev)
82{
7791bdae 83 struct wacom *wacom = input_get_drvdata(dev);
3bea733a 84
3dad188e
BT
85 /*
86 * wacom->hdev should never be null, but surprisingly, I had the case
87 * once while unplugging the Wacom Wireless Receiver.
88 */
89 if (wacom->hdev)
90 hid_hw_close(wacom->hdev);
3bea733a
PC
91}
92
115d5e12 93/*
198fdee2 94 * Calculate the resolution of the X or Y axis using hidinput_calc_abs_res.
115d5e12
JG
95 */
96static int wacom_calc_hid_res(int logical_extents, int physical_extents,
c669fb2b 97 unsigned unit, int exponent)
115d5e12 98{
198fdee2
BT
99 struct hid_field field = {
100 .logical_maximum = logical_extents,
101 .physical_maximum = physical_extents,
102 .unit = unit,
103 .unit_exponent = exponent,
104 };
105
106 return hidinput_calc_abs_res(&field, ABS_X);
115d5e12
JG
107}
108
c669fb2b
BT
109static void wacom_feature_mapping(struct hid_device *hdev,
110 struct hid_field *field, struct hid_usage *usage)
f393ee2b 111{
c669fb2b
BT
112 struct wacom *wacom = hid_get_drvdata(hdev);
113 struct wacom_features *features = &wacom->wacom_wac.features;
5ae6e89f 114 struct hid_data *hid_data = &wacom->wacom_wac.hid_data;
ac2423c9 115 unsigned int equivalent_usage = wacom_equivalent_usage(usage->hid);
8ffffd52
BT
116 u8 *data;
117 int ret;
345857bb 118 int n;
f393ee2b 119
ac2423c9 120 switch (equivalent_usage) {
c669fb2b
BT
121 case HID_DG_CONTACTMAX:
122 /* leave touch_max as is if predefined */
8ffffd52
BT
123 if (!features->touch_max) {
124 /* read manually */
125 data = kzalloc(2, GFP_KERNEL);
126 if (!data)
127 break;
128 data[0] = field->report->id;
129 ret = wacom_get_report(hdev, HID_FEATURE_REPORT,
05e8fd92
JG
130 data, 2, WAC_CMD_RETRIES);
131 if (ret == 2) {
8ffffd52 132 features->touch_max = data[1];
05e8fd92
JG
133 } else {
134 features->touch_max = 16;
135 hid_warn(hdev, "wacom_feature_mapping: "
136 "could not get HID_DG_CONTACTMAX, "
137 "defaulting to %d\n",
138 features->touch_max);
139 }
8ffffd52
BT
140 kfree(data);
141 }
c669fb2b 142 break;
5ae6e89f
BT
143 case HID_DG_INPUTMODE:
144 /* Ignore if value index is out of bounds. */
145 if (usage->usage_index >= field->report_count) {
146 dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n");
147 break;
148 }
149
150 hid_data->inputmode = field->report->id;
151 hid_data->inputmode_index = usage->usage_index;
152 break;
326ea2a9
JG
153
154 case HID_UP_DIGITIZER:
155 if (field->report->id == 0x0B &&
8de82280
JG
156 (field->application == WACOM_HID_G9_PEN ||
157 field->application == WACOM_HID_G11_PEN)) {
326ea2a9
JG
158 wacom->wacom_wac.mode_report = field->report->id;
159 wacom->wacom_wac.mode_value = 0;
160 }
161 break;
162
c9c09587
JG
163 case WACOM_HID_WD_DATAMODE:
164 wacom->wacom_wac.mode_report = field->report->id;
165 wacom->wacom_wac.mode_value = 2;
166 break;
167
8de82280
JG
168 case WACOM_HID_UP_G9:
169 case WACOM_HID_UP_G11:
326ea2a9 170 if (field->report->id == 0x03 &&
8de82280
JG
171 (field->application == WACOM_HID_G9_TOUCHSCREEN ||
172 field->application == WACOM_HID_G11_TOUCHSCREEN)) {
326ea2a9
JG
173 wacom->wacom_wac.mode_report = field->report->id;
174 wacom->wacom_wac.mode_value = 0;
175 }
176 break;
345857bb
JG
177 case WACOM_HID_WD_OFFSETLEFT:
178 case WACOM_HID_WD_OFFSETTOP:
179 case WACOM_HID_WD_OFFSETRIGHT:
180 case WACOM_HID_WD_OFFSETBOTTOM:
181 /* read manually */
182 n = hid_report_len(field->report);
183 data = hid_alloc_report_buf(field->report, GFP_KERNEL);
184 if (!data)
185 break;
186 data[0] = field->report->id;
187 ret = wacom_get_report(hdev, HID_FEATURE_REPORT,
188 data, n, WAC_CMD_RETRIES);
189 if (ret == n) {
190 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT,
191 data, n, 0);
192 } else {
193 hid_warn(hdev, "%s: could not retrieve sensor offsets\n",
194 __func__);
195 }
196 kfree(data);
197 break;
f393ee2b
PC
198 }
199}
200
428f8588
CB
201/*
202 * Interface Descriptor of wacom devices can be incomplete and
203 * inconsistent so wacom_features table is used to store stylus
204 * device's packet lengths, various maximum values, and tablet
205 * resolution based on product ID's.
206 *
207 * For devices that contain 2 interfaces, wacom_features table is
208 * inaccurate for the touch interface. Since the Interface Descriptor
209 * for touch interfaces has pretty complete data, this function exists
210 * to query tablet for this missing information instead of hard coding in
211 * an additional table.
212 *
213 * A typical Interface Descriptor for a stylus will contain a
214 * boot mouse application collection that is not of interest and this
215 * function will ignore it.
216 *
217 * It also contains a digitizer application collection that also is not
218 * of interest since any information it contains would be duplicate
219 * of what is in wacom_features. Usually it defines a report of an array
220 * of bytes that could be used as max length of the stylus packet returned.
221 * If it happens to define a Digitizer-Stylus Physical Collection then
222 * the X and Y logical values contain valid data but it is ignored.
223 *
224 * A typical Interface Descriptor for a touch interface will contain a
225 * Digitizer-Finger Physical Collection which will define both logical
226 * X/Y maximum as well as the physical size of tablet. Since touch
227 * interfaces haven't supported pressure or distance, this is enough
228 * information to override invalid values in the wacom_features table.
4134361a 229 *
c669fb2b
BT
230 * Intuos5 touch interface and 3rd gen Bamboo Touch do not contain useful
231 * data. We deal with them after returning from this function.
428f8588 232 */
c669fb2b
BT
233static void wacom_usage_mapping(struct hid_device *hdev,
234 struct hid_field *field, struct hid_usage *usage)
545f4e99 235{
c669fb2b
BT
236 struct wacom *wacom = hid_get_drvdata(hdev);
237 struct wacom_features *features = &wacom->wacom_wac.features;
d97a5522
BT
238 bool finger = WACOM_FINGER_FIELD(field);
239 bool pen = WACOM_PEN_FIELD(field);
e9fc413f 240
c669fb2b
BT
241 /*
242 * Requiring Stylus Usage will ignore boot mouse
243 * X/Y values and some cases of invalid Digitizer X/Y
244 * values commonly reported.
245 */
042628ab 246 if (pen)
aa86b18c 247 features->device_type |= WACOM_DEVICETYPE_PEN;
042628ab 248 else if (finger)
aa86b18c 249 features->device_type |= WACOM_DEVICETYPE_TOUCH;
042628ab 250 else
c669fb2b
BT
251 return;
252
30ebc1ae
PC
253 /*
254 * Bamboo models do not support HID_DG_CONTACTMAX.
255 * And, Bamboo Pen only descriptor contains touch.
256 */
3b164a00 257 if (features->type > BAMBOO_PT) {
30ebc1ae
PC
258 /* ISDv4 touch devices at least supports one touch point */
259 if (finger && !features->touch_max)
260 features->touch_max = 1;
261 }
c669fb2b 262
6005a13c
JG
263 /*
264 * ISDv4 devices which predate HID's adoption of the
265 * HID_DG_BARELSWITCH2 usage use 0x000D0000 in its
266 * position instead. We can accurately detect if a
267 * usage with that value should be HID_DG_BARRELSWITCH2
268 * based on the surrounding usages, which have remained
269 * constant across generations.
270 */
271 if (features->type == HID_GENERIC &&
272 usage->hid == 0x000D0000 &&
273 field->application == HID_DG_PEN &&
274 field->physical == HID_DG_STYLUS) {
275 int i = usage->usage_index;
276
277 if (i-4 >= 0 && i+1 < field->maxusage &&
278 field->usage[i-4].hid == HID_DG_TIPSWITCH &&
279 field->usage[i-3].hid == HID_DG_BARRELSWITCH &&
280 field->usage[i-2].hid == HID_DG_ERASER &&
281 field->usage[i-1].hid == HID_DG_INVERT &&
282 field->usage[i+1].hid == HID_DG_INRANGE) {
283 usage->hid = HID_DG_BARRELSWITCH2;
284 }
285 }
286
c669fb2b
BT
287 switch (usage->hid) {
288 case HID_GD_X:
289 features->x_max = field->logical_maximum;
290 if (finger) {
c669fb2b 291 features->x_phy = field->physical_maximum;
3b164a00
PC
292 if ((features->type != BAMBOO_PT) &&
293 (features->type != BAMBOO_TOUCH)) {
c669fb2b
BT
294 features->unit = field->unit;
295 features->unitExpo = field->unit_exponent;
545f4e99 296 }
c669fb2b
BT
297 }
298 break;
299 case HID_GD_Y:
300 features->y_max = field->logical_maximum;
301 if (finger) {
302 features->y_phy = field->physical_maximum;
3b164a00
PC
303 if ((features->type != BAMBOO_PT) &&
304 (features->type != BAMBOO_TOUCH)) {
c669fb2b
BT
305 features->unit = field->unit;
306 features->unitExpo = field->unit_exponent;
307 }
308 }
309 break;
310 case HID_DG_TIPPRESSURE:
311 if (pen)
312 features->pressure_max = field->logical_maximum;
313 break;
314 }
7704ac93
BT
315
316 if (features->type == HID_GENERIC)
317 wacom_wac_usage_mapping(hdev, field, usage);
c669fb2b 318}
4134361a 319
b58ba1ba
JG
320static void wacom_post_parse_hid(struct hid_device *hdev,
321 struct wacom_features *features)
322{
323 struct wacom *wacom = hid_get_drvdata(hdev);
324 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
325
326 if (features->type == HID_GENERIC) {
327 /* Any last-minute generic device setup */
328 if (features->touch_max > 1) {
ac2423c9
AAS
329 if (features->device_type & WACOM_DEVICETYPE_DIRECT)
330 input_mt_init_slots(wacom_wac->touch_input,
331 wacom_wac->features.touch_max,
332 INPUT_MT_DIRECT);
333 else
334 input_mt_init_slots(wacom_wac->touch_input,
335 wacom_wac->features.touch_max,
336 INPUT_MT_POINTER);
b58ba1ba
JG
337 }
338 }
339}
340
c669fb2b
BT
341static void wacom_parse_hid(struct hid_device *hdev,
342 struct wacom_features *features)
343{
344 struct hid_report_enum *rep_enum;
345 struct hid_report *hreport;
346 int i, j;
347
348 /* check features first */
349 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT];
350 list_for_each_entry(hreport, &rep_enum->report_list, list) {
351 for (i = 0; i < hreport->maxfield; i++) {
352 /* Ignore if report count is out of bounds. */
353 if (hreport->field[i]->report_count < 1)
354 continue;
355
356 for (j = 0; j < hreport->field[i]->maxusage; j++) {
357 wacom_feature_mapping(hdev, hreport->field[i],
358 hreport->field[i]->usage + j);
4134361a 359 }
545f4e99
PC
360 }
361 }
362
c669fb2b
BT
363 /* now check the input usages */
364 rep_enum = &hdev->report_enum[HID_INPUT_REPORT];
365 list_for_each_entry(hreport, &rep_enum->report_list, list) {
366
367 if (!hreport->maxfield)
368 continue;
369
370 for (i = 0; i < hreport->maxfield; i++)
371 for (j = 0; j < hreport->field[i]->maxusage; j++)
372 wacom_usage_mapping(hdev, hreport->field[i],
373 hreport->field[i]->usage + j);
374 }
b58ba1ba
JG
375
376 wacom_post_parse_hid(hdev, features);
545f4e99
PC
377}
378
5ae6e89f
BT
379static int wacom_hid_set_device_mode(struct hid_device *hdev)
380{
381 struct wacom *wacom = hid_get_drvdata(hdev);
382 struct hid_data *hid_data = &wacom->wacom_wac.hid_data;
383 struct hid_report *r;
384 struct hid_report_enum *re;
385
386 if (hid_data->inputmode < 0)
387 return 0;
388
389 re = &(hdev->report_enum[HID_FEATURE_REPORT]);
390 r = re->report_id_hash[hid_data->inputmode];
391 if (r) {
392 r->field[0]->value[hid_data->inputmode_index] = 2;
393 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
394 }
395 return 0;
396}
397
326ea2a9
JG
398static int wacom_set_device_mode(struct hid_device *hdev,
399 struct wacom_wac *wacom_wac)
3b7307c2 400{
326ea2a9
JG
401 u8 *rep_data;
402 struct hid_report *r;
403 struct hid_report_enum *re;
404 int length;
fe494bc2 405 int error = -ENOMEM, limit = 0;
3b7307c2 406
326ea2a9
JG
407 if (wacom_wac->mode_report < 0)
408 return 0;
409
410 re = &(hdev->report_enum[HID_FEATURE_REPORT]);
411 r = re->report_id_hash[wacom_wac->mode_report];
412 if (!r)
413 return -EINVAL;
414
415 rep_data = hid_alloc_report_buf(r, GFP_KERNEL);
3b7307c2 416 if (!rep_data)
326ea2a9
JG
417 return -ENOMEM;
418
419 length = hid_report_len(r);
ec67bbed 420
fe494bc2 421 do {
326ea2a9
JG
422 rep_data[0] = wacom_wac->mode_report;
423 rep_data[1] = wacom_wac->mode_value;
9937c026 424
296b7378
PF
425 error = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data,
426 length, 1);
3cb83157 427 if (error >= 0)
27b20a9d 428 error = wacom_get_report(hdev, HID_FEATURE_REPORT,
c64d8834 429 rep_data, length, 1);
326ea2a9
JG
430 } while (error >= 0 &&
431 rep_data[1] != wacom_wac->mode_report &&
432 limit++ < WAC_MSG_RETRIES);
fe494bc2
JG
433
434 kfree(rep_data);
435
436 return error < 0 ? error : 0;
437}
438
f81a1295
BT
439static int wacom_bt_query_tablet_data(struct hid_device *hdev, u8 speed,
440 struct wacom_features *features)
441{
387142bb
BT
442 struct wacom *wacom = hid_get_drvdata(hdev);
443 int ret;
444 u8 rep_data[2];
445
446 switch (features->type) {
447 case GRAPHIRE_BT:
448 rep_data[0] = 0x03;
449 rep_data[1] = 0x00;
296b7378
PF
450 ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2,
451 3);
387142bb
BT
452
453 if (ret >= 0) {
454 rep_data[0] = speed == 0 ? 0x05 : 0x06;
455 rep_data[1] = 0x00;
456
457 ret = wacom_set_report(hdev, HID_FEATURE_REPORT,
296b7378 458 rep_data, 2, 3);
387142bb
BT
459
460 if (ret >= 0) {
461 wacom->wacom_wac.bt_high_speed = speed;
462 return 0;
463 }
464 }
465
466 /*
467 * Note that if the raw queries fail, it's not a hard failure
468 * and it is safe to continue
469 */
470 hid_warn(hdev, "failed to poke device, command %d, err %d\n",
471 rep_data[0], ret);
472 break;
81af7e61
BT
473 case INTUOS4WL:
474 if (speed == 1)
475 wacom->wacom_wac.bt_features &= ~0x20;
476 else
477 wacom->wacom_wac.bt_features |= 0x20;
478
479 rep_data[0] = 0x03;
480 rep_data[1] = wacom->wacom_wac.bt_features;
481
296b7378
PF
482 ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2,
483 1);
81af7e61
BT
484 if (ret >= 0)
485 wacom->wacom_wac.bt_high_speed = speed;
486 break;
387142bb
BT
487 }
488
f81a1295
BT
489 return 0;
490}
491
fe494bc2
JG
492/*
493 * Switch the tablet into its most-capable mode. Wacom tablets are
494 * typically configured to power-up in a mode which sends mouse-like
495 * reports to the OS. To get absolute position, pressure data, etc.
496 * from the tablet, it is necessary to switch the tablet out of this
497 * mode and into one which sends the full range of tablet data.
498 */
a544c619 499static int _wacom_query_tablet_data(struct wacom *wacom)
fe494bc2 500{
a544c619 501 struct hid_device *hdev = wacom->hdev;
326ea2a9 502 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
a544c619 503 struct wacom_features *features = &wacom_wac->features;
326ea2a9 504
f81a1295
BT
505 if (hdev->bus == BUS_BLUETOOTH)
506 return wacom_bt_query_tablet_data(hdev, 1, features);
507
326ea2a9
JG
508 if (features->type != HID_GENERIC) {
509 if (features->device_type & WACOM_DEVICETYPE_TOUCH) {
510 if (features->type > TABLETPC) {
511 /* MT Tablet PC touch */
512 wacom_wac->mode_report = 3;
513 wacom_wac->mode_value = 4;
514 } else if (features->type == WACOM_24HDT) {
515 wacom_wac->mode_report = 18;
516 wacom_wac->mode_value = 2;
517 } else if (features->type == WACOM_27QHDT) {
518 wacom_wac->mode_report = 131;
519 wacom_wac->mode_value = 2;
520 } else if (features->type == BAMBOO_PAD) {
521 wacom_wac->mode_report = 2;
522 wacom_wac->mode_value = 2;
523 }
524 } else if (features->device_type & WACOM_DEVICETYPE_PEN) {
525 if (features->type <= BAMBOO_PT) {
526 wacom_wac->mode_report = 2;
527 wacom_wac->mode_value = 2;
528 }
1963518b 529 }
ec67bbed 530 }
3b7307c2 531
326ea2a9
JG
532 wacom_set_device_mode(hdev, wacom_wac);
533
534 if (features->type == HID_GENERIC)
535 return wacom_hid_set_device_mode(hdev);
536
fe494bc2 537 return 0;
3b7307c2
DT
538}
539
c669fb2b 540static void wacom_retrieve_hid_descriptor(struct hid_device *hdev,
1963518b 541 struct wacom_features *features)
ec67bbed 542{
27b20a9d
BT
543 struct wacom *wacom = hid_get_drvdata(hdev);
544 struct usb_interface *intf = wacom->intf;
ec67bbed 545
fed87e65 546 /* default features */
fed87e65
HR
547 features->x_fuzz = 4;
548 features->y_fuzz = 4;
549 features->pressure_fuzz = 0;
bef7e200
JG
550 features->distance_fuzz = 1;
551 features->tilt_fuzz = 1;
ec67bbed 552
d3825d51
CB
553 /*
554 * The wireless device HID is basic and layout conflicts with
555 * other tablets (monitor and touch interface can look like pen).
556 * Skip the query for this type and modify defaults based on
557 * interface number.
558 */
559 if (features->type == WIRELESS) {
3f14a63a 560 if (intf->cur_altsetting->desc.bInterfaceNumber == 0)
ccad85cc 561 features->device_type = WACOM_DEVICETYPE_WL_MONITOR;
3f14a63a 562 else
aa86b18c 563 features->device_type = WACOM_DEVICETYPE_NONE;
3f14a63a 564 return;
d3825d51
CB
565 }
566
c669fb2b 567 wacom_parse_hid(hdev, features);
ec67bbed
PC
568}
569
4451e088 570struct wacom_hdev_data {
4492efff
PC
571 struct list_head list;
572 struct kref kref;
4451e088 573 struct hid_device *dev;
4492efff
PC
574 struct wacom_shared shared;
575};
576
577static LIST_HEAD(wacom_udev_list);
578static DEFINE_MUTEX(wacom_udev_list_lock);
579
41372d5d
JG
580static bool compare_device_paths(struct hid_device *hdev_a,
581 struct hid_device *hdev_b, char separator)
582{
583 int n1 = strrchr(hdev_a->phys, separator) - hdev_a->phys;
584 int n2 = strrchr(hdev_b->phys, separator) - hdev_b->phys;
585
586 if (n1 != n2 || n1 <= 0 || n2 <= 0)
587 return false;
588
589 return !strncmp(hdev_a->phys, hdev_b->phys, n1);
590}
591
4451e088
BT
592static bool wacom_are_sibling(struct hid_device *hdev,
593 struct hid_device *sibling)
aea2bf6a 594{
4451e088
BT
595 struct wacom *wacom = hid_get_drvdata(hdev);
596 struct wacom_features *features = &wacom->wacom_wac.features;
41372d5d
JG
597 struct wacom *sibling_wacom = hid_get_drvdata(sibling);
598 struct wacom_features *sibling_features = &sibling_wacom->wacom_wac.features;
599 __u32 oVid = features->oVid ? features->oVid : hdev->vendor;
600 __u32 oPid = features->oPid ? features->oPid : hdev->product;
4451e088 601
41372d5d
JG
602 /* The defined oVid/oPid must match that of the sibling */
603 if (features->oVid != HID_ANY_ID && sibling->vendor != oVid)
604 return false;
605 if (features->oPid != HID_ANY_ID && sibling->product != oPid)
606 return false;
607
608 /*
609 * Devices with the same VID/PID must share the same physical
610 * device path, while those with different VID/PID must share
611 * the same physical parent device path.
612 */
613 if (hdev->vendor == sibling->vendor && hdev->product == sibling->product) {
614 if (!compare_device_paths(hdev, sibling, '/'))
615 return false;
616 } else {
617 if (!compare_device_paths(hdev, sibling, '.'))
618 return false;
4451e088 619 }
aea2bf6a 620
41372d5d
JG
621 /* Skip the remaining heuristics unless you are a HID_GENERIC device */
622 if (features->type != HID_GENERIC)
623 return true;
624
625 /*
626 * Direct-input devices may not be siblings of indirect-input
627 * devices.
628 */
629 if ((features->device_type & WACOM_DEVICETYPE_DIRECT) &&
630 !(sibling_features->device_type & WACOM_DEVICETYPE_DIRECT))
4451e088 631 return false;
aea2bf6a 632
41372d5d
JG
633 /*
634 * Indirect-input devices may not be siblings of direct-input
635 * devices.
636 */
637 if (!(features->device_type & WACOM_DEVICETYPE_DIRECT) &&
638 (sibling_features->device_type & WACOM_DEVICETYPE_DIRECT))
4451e088 639 return false;
aea2bf6a 640
41372d5d
JG
641 /* Pen devices may only be siblings of touch devices */
642 if ((features->device_type & WACOM_DEVICETYPE_PEN) &&
643 !(sibling_features->device_type & WACOM_DEVICETYPE_TOUCH))
644 return false;
645
646 /* Touch devices may only be siblings of pen devices */
647 if ((features->device_type & WACOM_DEVICETYPE_TOUCH) &&
648 !(sibling_features->device_type & WACOM_DEVICETYPE_PEN))
649 return false;
650
651 /*
652 * No reason could be found for these two devices to NOT be
653 * siblings, so there's a good chance they ARE siblings
654 */
655 return true;
aea2bf6a
JG
656}
657
4451e088 658static struct wacom_hdev_data *wacom_get_hdev_data(struct hid_device *hdev)
4492efff 659{
4451e088 660 struct wacom_hdev_data *data;
4492efff 661
41372d5d
JG
662 /* Try to find an already-probed interface from the same device */
663 list_for_each_entry(data, &wacom_udev_list, list) {
664 if (compare_device_paths(hdev, data->dev, '/'))
665 return data;
666 }
667
668 /* Fallback to finding devices that appear to be "siblings" */
4492efff 669 list_for_each_entry(data, &wacom_udev_list, list) {
4451e088 670 if (wacom_are_sibling(hdev, data->dev)) {
4492efff
PC
671 kref_get(&data->kref);
672 return data;
673 }
674 }
675
676 return NULL;
677}
678
1c817c83
BT
679static void wacom_release_shared_data(struct kref *kref)
680{
681 struct wacom_hdev_data *data =
682 container_of(kref, struct wacom_hdev_data, kref);
683
684 mutex_lock(&wacom_udev_list_lock);
685 list_del(&data->list);
686 mutex_unlock(&wacom_udev_list_lock);
687
688 kfree(data);
689}
690
691static void wacom_remove_shared_data(void *res)
692{
693 struct wacom *wacom = res;
694 struct wacom_hdev_data *data;
695 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
696
697 if (wacom_wac->shared) {
698 data = container_of(wacom_wac->shared, struct wacom_hdev_data,
699 shared);
700
701 if (wacom_wac->shared->touch == wacom->hdev)
702 wacom_wac->shared->touch = NULL;
703 else if (wacom_wac->shared->pen == wacom->hdev)
704 wacom_wac->shared->pen = NULL;
705
706 kref_put(&data->kref, wacom_release_shared_data);
707 wacom_wac->shared = NULL;
708 }
709}
710
4451e088 711static int wacom_add_shared_data(struct hid_device *hdev)
4492efff 712{
4451e088
BT
713 struct wacom *wacom = hid_get_drvdata(hdev);
714 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
715 struct wacom_hdev_data *data;
4492efff
PC
716 int retval = 0;
717
718 mutex_lock(&wacom_udev_list_lock);
719
4451e088 720 data = wacom_get_hdev_data(hdev);
4492efff 721 if (!data) {
4451e088 722 data = kzalloc(sizeof(struct wacom_hdev_data), GFP_KERNEL);
4492efff
PC
723 if (!data) {
724 retval = -ENOMEM;
725 goto out;
726 }
727
728 kref_init(&data->kref);
4451e088 729 data->dev = hdev;
4492efff
PC
730 list_add_tail(&data->list, &wacom_udev_list);
731 }
732
4451e088 733 wacom_wac->shared = &data->shared;
4492efff 734
1c817c83
BT
735 retval = devm_add_action(&hdev->dev, wacom_remove_shared_data, wacom);
736 if (retval) {
737 mutex_unlock(&wacom_udev_list_lock);
738 wacom_remove_shared_data(wacom);
739 return retval;
740 }
741
a9ce7856
JG
742 if (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH)
743 wacom_wac->shared->touch = hdev;
744 else if (wacom_wac->features.device_type & WACOM_DEVICETYPE_PEN)
745 wacom_wac->shared->pen = hdev;
746
4492efff
PC
747out:
748 mutex_unlock(&wacom_udev_list_lock);
749 return retval;
750}
751
5d7e7d47
EH
752static int wacom_led_control(struct wacom *wacom)
753{
754 unsigned char *buf;
9b5b95dd 755 int retval;
912ca216
PC
756 unsigned char report_id = WAC_CMD_LED_CONTROL;
757 int buf_size = 9;
5d7e7d47 758
a50aac71
BT
759 if (!wacom->led.groups)
760 return -ENOTSUPP;
761
912ca216
PC
762 if (wacom->wacom_wac.pid) { /* wireless connected */
763 report_id = WAC_CMD_WL_LED_CONTROL;
764 buf_size = 13;
765 }
4922cd26
JG
766 else if (wacom->wacom_wac.features.type == INTUOSP2_BT) {
767 report_id = WAC_CMD_WL_INTUOSP2;
768 buf_size = 51;
769 }
912ca216 770 buf = kzalloc(buf_size, GFP_KERNEL);
5d7e7d47
EH
771 if (!buf)
772 return -ENOMEM;
773
10c55cac
AAS
774 if (wacom->wacom_wac.features.type == HID_GENERIC) {
775 buf[0] = WAC_CMD_LED_CONTROL_GENERIC;
776 buf[1] = wacom->led.llv;
777 buf[2] = wacom->led.groups[0].select & 0x03;
778
779 } else if ((wacom->wacom_wac.features.type >= INTUOS5S &&
780 wacom->wacom_wac.features.type <= INTUOSPL)) {
9b5b95dd
JG
781 /*
782 * Touch Ring and crop mark LED luminance may take on
783 * one of four values:
784 * 0 = Low; 1 = Medium; 2 = High; 3 = Off
785 */
a50aac71 786 int ring_led = wacom->led.groups[0].select & 0x03;
9b5b95dd
JG
787 int ring_lum = (((wacom->led.llv & 0x60) >> 5) - 1) & 0x03;
788 int crop_lum = 0;
912ca216
PC
789 unsigned char led_bits = (crop_lum << 4) | (ring_lum << 2) | (ring_led);
790
791 buf[0] = report_id;
792 if (wacom->wacom_wac.pid) {
793 wacom_get_report(wacom->hdev, HID_FEATURE_REPORT,
794 buf, buf_size, WAC_CMD_RETRIES);
795 buf[0] = report_id;
796 buf[4] = led_bits;
797 } else
798 buf[1] = led_bits;
9b5b95dd 799 }
4922cd26
JG
800 else if (wacom->wacom_wac.features.type == INTUOSP2_BT) {
801 buf[0] = report_id;
802 buf[4] = 100; // Power Connection LED (ORANGE)
803 buf[5] = 100; // BT Connection LED (BLUE)
804 buf[6] = 100; // Paper Mode (RED?)
805 buf[7] = 100; // Paper Mode (GREEN?)
806 buf[8] = 100; // Paper Mode (BLUE?)
807 buf[9] = wacom->led.llv;
808 buf[10] = wacom->led.groups[0].select & 0x03;
809 }
9b5b95dd 810 else {
a50aac71 811 int led = wacom->led.groups[0].select | 0x4;
9b5b95dd
JG
812
813 if (wacom->wacom_wac.features.type == WACOM_21UX2 ||
814 wacom->wacom_wac.features.type == WACOM_24HD)
a50aac71 815 led |= (wacom->led.groups[1].select << 4) | 0x40;
9b5b95dd 816
912ca216 817 buf[0] = report_id;
9b5b95dd
JG
818 buf[1] = led;
819 buf[2] = wacom->led.llv;
820 buf[3] = wacom->led.hlv;
821 buf[4] = wacom->led.img_lum;
822 }
5d7e7d47 823
912ca216 824 retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, buf_size,
296b7378 825 WAC_CMD_RETRIES);
5d7e7d47
EH
826 kfree(buf);
827
828 return retval;
829}
830
849e2f06
BT
831static int wacom_led_putimage(struct wacom *wacom, int button_id, u8 xfer_id,
832 const unsigned len, const void *img)
5d7e7d47
EH
833{
834 unsigned char *buf;
835 int i, retval;
849e2f06 836 const unsigned chunk_len = len / 4; /* 4 chunks are needed to be sent */
5d7e7d47 837
849e2f06 838 buf = kzalloc(chunk_len + 3 , GFP_KERNEL);
5d7e7d47
EH
839 if (!buf)
840 return -ENOMEM;
841
842 /* Send 'start' command */
843 buf[0] = WAC_CMD_ICON_START;
844 buf[1] = 1;
296b7378
PF
845 retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
846 WAC_CMD_RETRIES);
5d7e7d47
EH
847 if (retval < 0)
848 goto out;
849
849e2f06 850 buf[0] = xfer_id;
5d7e7d47
EH
851 buf[1] = button_id & 0x07;
852 for (i = 0; i < 4; i++) {
853 buf[2] = i;
849e2f06 854 memcpy(buf + 3, img + i * chunk_len, chunk_len);
5d7e7d47 855
27b20a9d 856 retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT,
296b7378 857 buf, chunk_len + 3, WAC_CMD_RETRIES);
5d7e7d47
EH
858 if (retval < 0)
859 break;
860 }
861
862 /* Send 'stop' */
863 buf[0] = WAC_CMD_ICON_START;
864 buf[1] = 0;
296b7378
PF
865 wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
866 WAC_CMD_RETRIES);
5d7e7d47
EH
867
868out:
869 kfree(buf);
870 return retval;
871}
872
09e7d941 873static ssize_t wacom_led_select_store(struct device *dev, int set_id,
5d7e7d47
EH
874 const char *buf, size_t count)
875{
ee79a8f8 876 struct hid_device *hdev = to_hid_device(dev);
29b47391 877 struct wacom *wacom = hid_get_drvdata(hdev);
5d7e7d47
EH
878 unsigned int id;
879 int err;
880
881 err = kstrtouint(buf, 10, &id);
882 if (err)
883 return err;
884
885 mutex_lock(&wacom->lock);
886
a50aac71 887 wacom->led.groups[set_id].select = id & 0x3;
5d7e7d47
EH
888 err = wacom_led_control(wacom);
889
890 mutex_unlock(&wacom->lock);
891
892 return err < 0 ? err : count;
893}
894
09e7d941
PC
895#define DEVICE_LED_SELECT_ATTR(SET_ID) \
896static ssize_t wacom_led##SET_ID##_select_store(struct device *dev, \
897 struct device_attribute *attr, const char *buf, size_t count) \
898{ \
899 return wacom_led_select_store(dev, SET_ID, buf, count); \
900} \
04c59abd
PC
901static ssize_t wacom_led##SET_ID##_select_show(struct device *dev, \
902 struct device_attribute *attr, char *buf) \
903{ \
ee79a8f8 904 struct hid_device *hdev = to_hid_device(dev);\
29b47391 905 struct wacom *wacom = hid_get_drvdata(hdev); \
37449adc 906 return scnprintf(buf, PAGE_SIZE, "%d\n", \
a50aac71 907 wacom->led.groups[SET_ID].select); \
04c59abd 908} \
e0984bc3 909static DEVICE_ATTR(status_led##SET_ID##_select, DEV_ATTR_RW_PERM, \
04c59abd 910 wacom_led##SET_ID##_select_show, \
09e7d941
PC
911 wacom_led##SET_ID##_select_store)
912
913DEVICE_LED_SELECT_ATTR(0);
914DEVICE_LED_SELECT_ATTR(1);
5d7e7d47
EH
915
916static ssize_t wacom_luminance_store(struct wacom *wacom, u8 *dest,
917 const char *buf, size_t count)
918{
919 unsigned int value;
920 int err;
921
922 err = kstrtouint(buf, 10, &value);
923 if (err)
924 return err;
925
926 mutex_lock(&wacom->lock);
927
928 *dest = value & 0x7f;
929 err = wacom_led_control(wacom);
930
931 mutex_unlock(&wacom->lock);
932
933 return err < 0 ? err : count;
934}
935
936#define DEVICE_LUMINANCE_ATTR(name, field) \
937static ssize_t wacom_##name##_luminance_store(struct device *dev, \
938 struct device_attribute *attr, const char *buf, size_t count) \
939{ \
ee79a8f8 940 struct hid_device *hdev = to_hid_device(dev);\
29b47391 941 struct wacom *wacom = hid_get_drvdata(hdev); \
5d7e7d47
EH
942 \
943 return wacom_luminance_store(wacom, &wacom->led.field, \
944 buf, count); \
945} \
37449adc
PC
946static ssize_t wacom_##name##_luminance_show(struct device *dev, \
947 struct device_attribute *attr, char *buf) \
948{ \
949 struct wacom *wacom = dev_get_drvdata(dev); \
950 return scnprintf(buf, PAGE_SIZE, "%d\n", wacom->led.field); \
951} \
e0984bc3 952static DEVICE_ATTR(name##_luminance, DEV_ATTR_RW_PERM, \
37449adc
PC
953 wacom_##name##_luminance_show, \
954 wacom_##name##_luminance_store)
5d7e7d47
EH
955
956DEVICE_LUMINANCE_ATTR(status0, llv);
957DEVICE_LUMINANCE_ATTR(status1, hlv);
958DEVICE_LUMINANCE_ATTR(buttons, img_lum);
959
960static ssize_t wacom_button_image_store(struct device *dev, int button_id,
961 const char *buf, size_t count)
962{
ee79a8f8 963 struct hid_device *hdev = to_hid_device(dev);
29b47391 964 struct wacom *wacom = hid_get_drvdata(hdev);
5d7e7d47 965 int err;
849e2f06
BT
966 unsigned len;
967 u8 xfer_id;
968
969 if (hdev->bus == BUS_BLUETOOTH) {
970 len = 256;
971 xfer_id = WAC_CMD_ICON_BT_XFER;
972 } else {
973 len = 1024;
974 xfer_id = WAC_CMD_ICON_XFER;
975 }
5d7e7d47 976
849e2f06 977 if (count != len)
5d7e7d47
EH
978 return -EINVAL;
979
980 mutex_lock(&wacom->lock);
981
849e2f06 982 err = wacom_led_putimage(wacom, button_id, xfer_id, len, buf);
5d7e7d47
EH
983
984 mutex_unlock(&wacom->lock);
985
986 return err < 0 ? err : count;
987}
988
989#define DEVICE_BTNIMG_ATTR(BUTTON_ID) \
990static ssize_t wacom_btnimg##BUTTON_ID##_store(struct device *dev, \
991 struct device_attribute *attr, const char *buf, size_t count) \
992{ \
993 return wacom_button_image_store(dev, BUTTON_ID, buf, count); \
994} \
e0984bc3 995static DEVICE_ATTR(button##BUTTON_ID##_rawimg, DEV_ATTR_WO_PERM, \
5d7e7d47
EH
996 NULL, wacom_btnimg##BUTTON_ID##_store)
997
998DEVICE_BTNIMG_ATTR(0);
999DEVICE_BTNIMG_ATTR(1);
1000DEVICE_BTNIMG_ATTR(2);
1001DEVICE_BTNIMG_ATTR(3);
1002DEVICE_BTNIMG_ATTR(4);
1003DEVICE_BTNIMG_ATTR(5);
1004DEVICE_BTNIMG_ATTR(6);
1005DEVICE_BTNIMG_ATTR(7);
1006
09e7d941
PC
1007static struct attribute *cintiq_led_attrs[] = {
1008 &dev_attr_status_led0_select.attr,
1009 &dev_attr_status_led1_select.attr,
1010 NULL
1011};
1012
1013static struct attribute_group cintiq_led_attr_group = {
1014 .name = "wacom_led",
1015 .attrs = cintiq_led_attrs,
1016};
1017
1018static struct attribute *intuos4_led_attrs[] = {
5d7e7d47
EH
1019 &dev_attr_status0_luminance.attr,
1020 &dev_attr_status1_luminance.attr,
09e7d941 1021 &dev_attr_status_led0_select.attr,
5d7e7d47
EH
1022 &dev_attr_buttons_luminance.attr,
1023 &dev_attr_button0_rawimg.attr,
1024 &dev_attr_button1_rawimg.attr,
1025 &dev_attr_button2_rawimg.attr,
1026 &dev_attr_button3_rawimg.attr,
1027 &dev_attr_button4_rawimg.attr,
1028 &dev_attr_button5_rawimg.attr,
1029 &dev_attr_button6_rawimg.attr,
1030 &dev_attr_button7_rawimg.attr,
1031 NULL
1032};
1033
09e7d941 1034static struct attribute_group intuos4_led_attr_group = {
5d7e7d47 1035 .name = "wacom_led",
09e7d941 1036 .attrs = intuos4_led_attrs,
5d7e7d47
EH
1037};
1038
9b5b95dd
JG
1039static struct attribute *intuos5_led_attrs[] = {
1040 &dev_attr_status0_luminance.attr,
1041 &dev_attr_status_led0_select.attr,
1042 NULL
1043};
1044
1045static struct attribute_group intuos5_led_attr_group = {
1046 .name = "wacom_led",
1047 .attrs = intuos5_led_attrs,
1048};
1049
10c55cac
AAS
1050static struct attribute *generic_led_attrs[] = {
1051 &dev_attr_status0_luminance.attr,
1052 &dev_attr_status_led0_select.attr,
1053 NULL
1054};
1055
1056static struct attribute_group generic_led_attr_group = {
1057 .name = "wacom_led",
1058 .attrs = generic_led_attrs,
1059};
1060
2df68a88
BT
1061struct wacom_sysfs_group_devres {
1062 struct attribute_group *group;
1063 struct kobject *root;
1064};
1065
1066static void wacom_devm_sysfs_group_release(struct device *dev, void *res)
1067{
1068 struct wacom_sysfs_group_devres *devres = res;
1069 struct kobject *kobj = devres->root;
1070
1071 dev_dbg(dev, "%s: dropping reference to %s\n",
1072 __func__, devres->group->name);
1073 sysfs_remove_group(kobj, devres->group);
1074}
1075
f9036bd4
BT
1076static int __wacom_devm_sysfs_create_group(struct wacom *wacom,
1077 struct kobject *root,
1078 struct attribute_group *group)
2df68a88
BT
1079{
1080 struct wacom_sysfs_group_devres *devres;
1081 int error;
1082
1083 devres = devres_alloc(wacom_devm_sysfs_group_release,
1084 sizeof(struct wacom_sysfs_group_devres),
1085 GFP_KERNEL);
1086 if (!devres)
1087 return -ENOMEM;
1088
1089 devres->group = group;
f9036bd4 1090 devres->root = root;
2df68a88
BT
1091
1092 error = sysfs_create_group(devres->root, group);
1093 if (error)
1094 return error;
1095
1096 devres_add(&wacom->hdev->dev, devres);
1097
1098 return 0;
1099}
1100
f9036bd4
BT
1101static int wacom_devm_sysfs_create_group(struct wacom *wacom,
1102 struct attribute_group *group)
1103{
1104 return __wacom_devm_sysfs_create_group(wacom, &wacom->hdev->dev.kobj,
1105 group);
1106}
1107
34736aa9 1108enum led_brightness wacom_leds_brightness_get(struct wacom_led *led)
97f5541f
BT
1109{
1110 struct wacom *wacom = led->wacom;
1111
1112 if (wacom->led.max_hlv)
1113 return led->hlv * LED_FULL / wacom->led.max_hlv;
1114
1115 if (wacom->led.max_llv)
1116 return led->llv * LED_FULL / wacom->led.max_llv;
1117
1118 /* device doesn't support brightness tuning */
1119 return LED_FULL;
1120}
1121
1122static enum led_brightness __wacom_led_brightness_get(struct led_classdev *cdev)
1123{
1124 struct wacom_led *led = container_of(cdev, struct wacom_led, cdev);
1125 struct wacom *wacom = led->wacom;
1126
1127 if (wacom->led.groups[led->group].select != led->id)
1128 return LED_OFF;
1129
1130 return wacom_leds_brightness_get(led);
1131}
1132
1133static int wacom_led_brightness_set(struct led_classdev *cdev,
1134 enum led_brightness brightness)
1135{
1136 struct wacom_led *led = container_of(cdev, struct wacom_led, cdev);
1137 struct wacom *wacom = led->wacom;
1138 int error;
1139
1140 mutex_lock(&wacom->lock);
1141
1142 if (!wacom->led.groups || (brightness == LED_OFF &&
1143 wacom->led.groups[led->group].select != led->id)) {
1144 error = 0;
1145 goto out;
1146 }
1147
1148 led->llv = wacom->led.llv = wacom->led.max_llv * brightness / LED_FULL;
1149 led->hlv = wacom->led.hlv = wacom->led.max_hlv * brightness / LED_FULL;
1150
1151 wacom->led.groups[led->group].select = led->id;
1152
1153 error = wacom_led_control(wacom);
1154
1155out:
1156 mutex_unlock(&wacom->lock);
1157
1158 return error;
1159}
1160
1161static void wacom_led_readonly_brightness_set(struct led_classdev *cdev,
1162 enum led_brightness brightness)
1163{
1164}
1165
1166static int wacom_led_register_one(struct device *dev, struct wacom *wacom,
1167 struct wacom_led *led, unsigned int group,
1168 unsigned int id, bool read_only)
1169{
1170 int error;
1171 char *name;
1172
1173 name = devm_kasprintf(dev, GFP_KERNEL,
1174 "%s::wacom-%d.%d",
1175 dev_name(dev),
1176 group,
1177 id);
1178 if (!name)
1179 return -ENOMEM;
1180
34736aa9
BT
1181 if (!read_only) {
1182 led->trigger.name = name;
1183 error = devm_led_trigger_register(dev, &led->trigger);
1184 if (error) {
1185 hid_err(wacom->hdev,
1186 "failed to register LED trigger %s: %d\n",
1187 led->cdev.name, error);
1188 return error;
1189 }
1190 }
1191
97f5541f
BT
1192 led->group = group;
1193 led->id = id;
1194 led->wacom = wacom;
1195 led->llv = wacom->led.llv;
1196 led->hlv = wacom->led.hlv;
1197 led->cdev.name = name;
1198 led->cdev.max_brightness = LED_FULL;
1199 led->cdev.flags = LED_HW_PLUGGABLE;
1200 led->cdev.brightness_get = __wacom_led_brightness_get;
34736aa9 1201 if (!read_only) {
97f5541f 1202 led->cdev.brightness_set_blocking = wacom_led_brightness_set;
34736aa9
BT
1203 led->cdev.default_trigger = led->cdev.name;
1204 } else {
97f5541f 1205 led->cdev.brightness_set = wacom_led_readonly_brightness_set;
34736aa9 1206 }
97f5541f
BT
1207
1208 error = devm_led_classdev_register(dev, &led->cdev);
1209 if (error) {
1210 hid_err(wacom->hdev,
1211 "failed to register LED %s: %d\n",
1212 led->cdev.name, error);
1213 led->cdev.name = NULL;
1214 return error;
1215 }
1216
1217 return 0;
1218}
1219
589e5060
BT
1220static void wacom_led_groups_release_one(void *data)
1221{
1222 struct wacom_group_leds *group = data;
1223
1224 devres_release_group(group->dev, group);
1225}
1226
97f5541f
BT
1227static int wacom_led_groups_alloc_and_register_one(struct device *dev,
1228 struct wacom *wacom,
1229 int group_id, int count,
1230 bool read_only)
1231{
1232 struct wacom_led *leds;
1233 int i, error;
1234
1235 if (group_id >= wacom->led.count || count <= 0)
1236 return -EINVAL;
1237
1238 if (!devres_open_group(dev, &wacom->led.groups[group_id], GFP_KERNEL))
1239 return -ENOMEM;
1240
1241 leds = devm_kzalloc(dev, sizeof(struct wacom_led) * count, GFP_KERNEL);
1242 if (!leds) {
1243 error = -ENOMEM;
1244 goto err;
1245 }
1246
1247 wacom->led.groups[group_id].leds = leds;
1248 wacom->led.groups[group_id].count = count;
1249
1250 for (i = 0; i < count; i++) {
1251 error = wacom_led_register_one(dev, wacom, &leds[i],
1252 group_id, i, read_only);
1253 if (error)
1254 goto err;
1255 }
1256
589e5060
BT
1257 wacom->led.groups[group_id].dev = dev;
1258
1259 devres_close_group(dev, &wacom->led.groups[group_id]);
1260
1261 /*
1262 * There is a bug (?) in devm_led_classdev_register() in which its
1263 * increments the refcount of the parent. If the parent is an input
1264 * device, that means the ref count never reaches 0 when
1265 * devm_input_device_release() gets called.
1266 * This means that the LEDs are still there after disconnect.
1267 * Manually force the release of the group so that the leds are released
1268 * once we are done using them.
1269 */
1270 error = devm_add_action_or_reset(&wacom->hdev->dev,
1271 wacom_led_groups_release_one,
1272 &wacom->led.groups[group_id]);
1273 if (error)
1274 return error;
1275
97f5541f
BT
1276 return 0;
1277
1278err:
1279 devres_release_group(dev, &wacom->led.groups[group_id]);
1280 return error;
1281}
1282
34736aa9
BT
1283struct wacom_led *wacom_led_find(struct wacom *wacom, unsigned int group_id,
1284 unsigned int id)
1285{
1286 struct wacom_group_leds *group;
1287
1288 if (group_id >= wacom->led.count)
1289 return NULL;
1290
1291 group = &wacom->led.groups[group_id];
1292
1293 if (!group->leds)
1294 return NULL;
1295
1296 id %= group->count;
1297
1298 return &group->leds[id];
1299}
1300
1301/**
1302 * wacom_led_next: gives the next available led with a wacom trigger.
1303 *
1304 * returns the next available struct wacom_led which has its default trigger
1305 * or the current one if none is available.
1306 */
1307struct wacom_led *wacom_led_next(struct wacom *wacom, struct wacom_led *cur)
1308{
1309 struct wacom_led *next_led;
1310 int group, next;
1311
1312 if (!wacom || !cur)
1313 return NULL;
1314
1315 group = cur->group;
1316 next = cur->id;
1317
1318 do {
1319 next_led = wacom_led_find(wacom, group, ++next);
1320 if (!next_led || next_led == cur)
1321 return next_led;
1322 } while (next_led->cdev.trigger != &next_led->trigger);
1323
1324 return next_led;
1325}
1326
a50aac71
BT
1327static void wacom_led_groups_release(void *data)
1328{
1329 struct wacom *wacom = data;
1330
1331 wacom->led.groups = NULL;
97f5541f 1332 wacom->led.count = 0;
a50aac71
BT
1333}
1334
1335static int wacom_led_groups_allocate(struct wacom *wacom, int count)
1336{
97f5541f 1337 struct device *dev = &wacom->hdev->dev;
a50aac71
BT
1338 struct wacom_group_leds *groups;
1339 int error;
1340
97f5541f 1341 groups = devm_kzalloc(dev, sizeof(struct wacom_group_leds) * count,
a50aac71
BT
1342 GFP_KERNEL);
1343 if (!groups)
1344 return -ENOMEM;
1345
97f5541f 1346 error = devm_add_action_or_reset(dev, wacom_led_groups_release, wacom);
a50aac71
BT
1347 if (error)
1348 return error;
1349
1350 wacom->led.groups = groups;
97f5541f
BT
1351 wacom->led.count = count;
1352
1353 return 0;
1354}
1355
1356static int wacom_leds_alloc_and_register(struct wacom *wacom, int group_count,
1357 int led_per_group, bool read_only)
1358{
1359 struct device *dev;
1360 int i, error;
1361
1362 if (!wacom->wacom_wac.pad_input)
1363 return -EINVAL;
1364
1365 dev = &wacom->wacom_wac.pad_input->dev;
1366
1367 error = wacom_led_groups_allocate(wacom, group_count);
1368 if (error)
1369 return error;
1370
1371 for (i = 0; i < group_count; i++) {
1372 error = wacom_led_groups_alloc_and_register_one(dev, wacom, i,
1373 led_per_group,
1374 read_only);
1375 if (error)
1376 return error;
1377 }
a50aac71
BT
1378
1379 return 0;
1380}
1381
10c55cac 1382int wacom_initialize_leds(struct wacom *wacom)
5d7e7d47
EH
1383{
1384 int error;
1385
862cf553
JG
1386 if (!(wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD))
1387 return 0;
1388
09e7d941
PC
1389 /* Initialize default values */
1390 switch (wacom->wacom_wac.features.type) {
10c55cac
AAS
1391 case HID_GENERIC:
1392 if (!wacom->generic_has_leds)
1393 return 0;
1394 wacom->led.llv = 100;
1395 wacom->led.max_llv = 100;
1396
1397 error = wacom_leds_alloc_and_register(wacom, 1, 4, false);
1398 if (error) {
1399 hid_err(wacom->hdev,
1400 "cannot create leds err: %d\n", error);
1401 return error;
1402 }
1403
1404 error = wacom_devm_sysfs_create_group(wacom,
1405 &generic_led_attr_group);
1406 break;
1407
a19fc986 1408 case INTUOS4S:
09e7d941 1409 case INTUOS4:
81af7e61 1410 case INTUOS4WL:
09e7d941 1411 case INTUOS4L:
f4fa9a6d 1412 wacom->led.llv = 10;
5d7e7d47 1413 wacom->led.hlv = 20;
97f5541f
BT
1414 wacom->led.max_llv = 127;
1415 wacom->led.max_hlv = 127;
5d7e7d47 1416 wacom->led.img_lum = 10;
a50aac71 1417
97f5541f 1418 error = wacom_leds_alloc_and_register(wacom, 1, 4, false);
a50aac71
BT
1419 if (error) {
1420 hid_err(wacom->hdev,
1421 "cannot create leds err: %d\n", error);
1422 return error;
1423 }
1424
2df68a88
BT
1425 error = wacom_devm_sysfs_create_group(wacom,
1426 &intuos4_led_attr_group);
09e7d941
PC
1427 break;
1428
246835fc 1429 case WACOM_24HD:
09e7d941 1430 case WACOM_21UX2:
09e7d941
PC
1431 wacom->led.llv = 0;
1432 wacom->led.hlv = 0;
1433 wacom->led.img_lum = 0;
5d7e7d47 1434
97f5541f 1435 error = wacom_leds_alloc_and_register(wacom, 2, 4, false);
a50aac71
BT
1436 if (error) {
1437 hid_err(wacom->hdev,
1438 "cannot create leds err: %d\n", error);
1439 return error;
1440 }
1441
2df68a88
BT
1442 error = wacom_devm_sysfs_create_group(wacom,
1443 &cintiq_led_attr_group);
09e7d941
PC
1444 break;
1445
9b5b95dd
JG
1446 case INTUOS5S:
1447 case INTUOS5:
1448 case INTUOS5L:
9a35c411
PC
1449 case INTUOSPS:
1450 case INTUOSPM:
1451 case INTUOSPL:
862cf553 1452 wacom->led.llv = 32;
97f5541f 1453 wacom->led.max_llv = 96;
862cf553 1454
97f5541f 1455 error = wacom_leds_alloc_and_register(wacom, 1, 4, false);
a50aac71
BT
1456 if (error) {
1457 hid_err(wacom->hdev,
1458 "cannot create leds err: %d\n", error);
1459 return error;
1460 }
1461
2df68a88
BT
1462 error = wacom_devm_sysfs_create_group(wacom,
1463 &intuos5_led_attr_group);
9b5b95dd
JG
1464 break;
1465
4922cd26
JG
1466 case INTUOSP2_BT:
1467 wacom->led.llv = 50;
1468 wacom->led.max_llv = 100;
1469 error = wacom_leds_alloc_and_register(wacom, 1, 4, false);
1470 if (error) {
1471 hid_err(wacom->hdev,
1472 "cannot create leds err: %d\n", error);
1473 return error;
1474 }
1475 return 0;
1476
a50aac71 1477 case REMOTE:
97f5541f
BT
1478 wacom->led.llv = 255;
1479 wacom->led.max_llv = 255;
a50aac71
BT
1480 error = wacom_led_groups_allocate(wacom, 5);
1481 if (error) {
1482 hid_err(wacom->hdev,
1483 "cannot create leds err: %d\n", error);
1484 return error;
1485 }
1486 return 0;
1487
09e7d941
PC
1488 default:
1489 return 0;
5d7e7d47
EH
1490 }
1491
09e7d941 1492 if (error) {
c31a408f 1493 hid_err(wacom->hdev,
09e7d941
PC
1494 "cannot create sysfs group err: %d\n", error);
1495 return error;
1496 }
09e7d941 1497
5d7e7d47
EH
1498 return 0;
1499}
1500
a544c619
BT
1501static void wacom_init_work(struct work_struct *work)
1502{
1503 struct wacom *wacom = container_of(work, struct wacom, init_work.work);
1504
1505 _wacom_query_tablet_data(wacom);
1506 wacom_led_control(wacom);
1507}
1508
1509static void wacom_query_tablet_data(struct wacom *wacom)
1510{
1511 schedule_delayed_work(&wacom->init_work, msecs_to_jiffies(1000));
1512}
1513
a1d552cc 1514static enum power_supply_property wacom_battery_props[] = {
9956953e 1515 POWER_SUPPLY_PROP_MODEL_NAME,
71fa641e 1516 POWER_SUPPLY_PROP_PRESENT,
ac8d1010 1517 POWER_SUPPLY_PROP_STATUS,
6e2a6e80 1518 POWER_SUPPLY_PROP_SCOPE,
a1d552cc
CB
1519 POWER_SUPPLY_PROP_CAPACITY
1520};
1521
1522static int wacom_battery_get_property(struct power_supply *psy,
1523 enum power_supply_property psp,
1524 union power_supply_propval *val)
1525{
59d69bc8 1526 struct wacom_battery *battery = power_supply_get_drvdata(psy);
a1d552cc
CB
1527 int ret = 0;
1528
1529 switch (psp) {
9956953e
BT
1530 case POWER_SUPPLY_PROP_MODEL_NAME:
1531 val->strval = battery->wacom->wacom_wac.name;
1532 break;
71fa641e 1533 case POWER_SUPPLY_PROP_PRESENT:
59d69bc8 1534 val->intval = battery->bat_connected;
71fa641e 1535 break;
6e2a6e80
BN
1536 case POWER_SUPPLY_PROP_SCOPE:
1537 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
1538 break;
a1d552cc 1539 case POWER_SUPPLY_PROP_CAPACITY:
59d69bc8 1540 val->intval = battery->battery_capacity;
ac8d1010
BT
1541 break;
1542 case POWER_SUPPLY_PROP_STATUS:
59d69bc8 1543 if (battery->bat_charging)
ac8d1010 1544 val->intval = POWER_SUPPLY_STATUS_CHARGING;
59d69bc8
BT
1545 else if (battery->battery_capacity == 100 &&
1546 battery->ps_connected)
ac8d1010 1547 val->intval = POWER_SUPPLY_STATUS_FULL;
59d69bc8 1548 else if (battery->ps_connected)
b0882cb7 1549 val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
ac8d1010
BT
1550 else
1551 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
a1d552cc
CB
1552 break;
1553 default:
1554 ret = -EINVAL;
1555 break;
1556 }
1557
1558 return ret;
1559}
1560
59d69bc8
BT
1561static int __wacom_initialize_battery(struct wacom *wacom,
1562 struct wacom_battery *battery)
a1d552cc 1563{
d70420b9 1564 static atomic_t battery_no = ATOMIC_INIT(0);
b189da90 1565 struct device *dev = &wacom->hdev->dev;
59d69bc8 1566 struct power_supply_config psy_cfg = { .drv_data = battery, };
136ae5e9 1567 struct power_supply *ps_bat;
59d69bc8 1568 struct power_supply_desc *bat_desc = &battery->bat_desc;
d70420b9 1569 unsigned long n;
b189da90
BT
1570 int error;
1571
1572 if (!devres_open_group(dev, bat_desc, GFP_KERNEL))
1573 return -ENOMEM;
a1d552cc 1574
9956953e
BT
1575 battery->wacom = wacom;
1576
59d69bc8
BT
1577 n = atomic_inc_return(&battery_no) - 1;
1578
1579 bat_desc->properties = wacom_battery_props;
1580 bat_desc->num_properties = ARRAY_SIZE(wacom_battery_props);
1581 bat_desc->get_property = wacom_battery_get_property;
1582 sprintf(battery->bat_name, "wacom_battery_%ld", n);
1583 bat_desc->name = battery->bat_name;
96983296 1584 bat_desc->type = POWER_SUPPLY_TYPE_USB;
59d69bc8
BT
1585 bat_desc->use_for_apm = 0;
1586
59d69bc8
BT
1587 ps_bat = devm_power_supply_register(dev, bat_desc, &psy_cfg);
1588 if (IS_ERR(ps_bat)) {
1589 error = PTR_ERR(ps_bat);
1590 goto err;
1591 }
297d716f 1592
59d69bc8 1593 power_supply_powers(ps_bat, &wacom->hdev->dev);
7dbd229e 1594
59d69bc8 1595 battery->battery = ps_bat;
a1d552cc 1596
b189da90 1597 devres_close_group(dev, bat_desc);
7dbd229e 1598 return 0;
b189da90
BT
1599
1600err:
1601 devres_release_group(dev, bat_desc);
1602 return error;
a1d552cc
CB
1603}
1604
59d69bc8
BT
1605static int wacom_initialize_battery(struct wacom *wacom)
1606{
1607 if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY)
1608 return __wacom_initialize_battery(wacom, &wacom->battery);
1609
1610 return 0;
1611}
1612
a1d552cc
CB
1613static void wacom_destroy_battery(struct wacom *wacom)
1614{
59d69bc8
BT
1615 if (wacom->battery.battery) {
1616 devres_release_group(&wacom->hdev->dev,
1617 &wacom->battery.bat_desc);
1618 wacom->battery.battery = NULL;
b7af2bb8 1619 }
a1d552cc
CB
1620}
1621
f81a1295
BT
1622static ssize_t wacom_show_speed(struct device *dev,
1623 struct device_attribute
1624 *attr, char *buf)
1625{
ee79a8f8 1626 struct hid_device *hdev = to_hid_device(dev);
f81a1295
BT
1627 struct wacom *wacom = hid_get_drvdata(hdev);
1628
1629 return snprintf(buf, PAGE_SIZE, "%i\n", wacom->wacom_wac.bt_high_speed);
1630}
1631
1632static ssize_t wacom_store_speed(struct device *dev,
1633 struct device_attribute *attr,
1634 const char *buf, size_t count)
1635{
ee79a8f8 1636 struct hid_device *hdev = to_hid_device(dev);
f81a1295
BT
1637 struct wacom *wacom = hid_get_drvdata(hdev);
1638 u8 new_speed;
1639
1640 if (kstrtou8(buf, 0, &new_speed))
1641 return -EINVAL;
1642
1643 if (new_speed != 0 && new_speed != 1)
1644 return -EINVAL;
1645
1646 wacom_bt_query_tablet_data(hdev, new_speed, &wacom->wacom_wac.features);
1647
1648 return count;
1649}
1650
e0984bc3 1651static DEVICE_ATTR(speed, DEV_ATTR_RW_PERM,
f81a1295
BT
1652 wacom_show_speed, wacom_store_speed);
1653
72b236d6
AS
1654
1655static ssize_t wacom_show_remote_mode(struct kobject *kobj,
1656 struct kobj_attribute *kattr,
1657 char *buf, int index)
1658{
2cf83833 1659 struct device *dev = kobj_to_dev(kobj->parent);
ee79a8f8 1660 struct hid_device *hdev = to_hid_device(dev);
72b236d6
AS
1661 struct wacom *wacom = hid_get_drvdata(hdev);
1662 u8 mode;
1663
a50aac71 1664 mode = wacom->led.groups[index].select;
72b236d6
AS
1665 if (mode >= 0 && mode < 3)
1666 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
1667 else
1668 return snprintf(buf, PAGE_SIZE, "%d\n", -1);
1669}
1670
1671#define DEVICE_EKR_ATTR_GROUP(SET_ID) \
1672static ssize_t wacom_show_remote##SET_ID##_mode(struct kobject *kobj, \
1673 struct kobj_attribute *kattr, char *buf) \
1674{ \
1675 return wacom_show_remote_mode(kobj, kattr, buf, SET_ID); \
1676} \
1677static struct kobj_attribute remote##SET_ID##_mode_attr = { \
1678 .attr = {.name = "remote_mode", \
1679 .mode = DEV_ATTR_RO_PERM}, \
1680 .show = wacom_show_remote##SET_ID##_mode, \
1681}; \
1682static struct attribute *remote##SET_ID##_serial_attrs[] = { \
1683 &remote##SET_ID##_mode_attr.attr, \
1684 NULL \
1685}; \
1686static struct attribute_group remote##SET_ID##_serial_group = { \
1687 .name = NULL, \
1688 .attrs = remote##SET_ID##_serial_attrs, \
1689}
1690
1691DEVICE_EKR_ATTR_GROUP(0);
1692DEVICE_EKR_ATTR_GROUP(1);
1693DEVICE_EKR_ATTR_GROUP(2);
1694DEVICE_EKR_ATTR_GROUP(3);
1695DEVICE_EKR_ATTR_GROUP(4);
1696
e6f2813a
BT
1697static int wacom_remote_create_attr_group(struct wacom *wacom, __u32 serial,
1698 int index)
72b236d6
AS
1699{
1700 int error = 0;
83e6b40e 1701 struct wacom_remote *remote = wacom->remote;
72b236d6 1702
e7749f6e 1703 remote->remotes[index].group.name = devm_kasprintf(&wacom->hdev->dev,
83e6b40e
BT
1704 GFP_KERNEL,
1705 "%d", serial);
e7749f6e 1706 if (!remote->remotes[index].group.name)
72b236d6 1707 return -ENOMEM;
72b236d6 1708
f9036bd4 1709 error = __wacom_devm_sysfs_create_group(wacom, remote->remote_dir,
e7749f6e 1710 &remote->remotes[index].group);
72b236d6 1711 if (error) {
e7749f6e 1712 remote->remotes[index].group.name = NULL;
72b236d6
AS
1713 hid_err(wacom->hdev,
1714 "cannot create sysfs group err: %d\n", error);
72b236d6
AS
1715 return error;
1716 }
1717
1718 return 0;
1719}
1720
72b236d6
AS
1721static int wacom_cmd_unpair_remote(struct wacom *wacom, unsigned char selector)
1722{
1723 const size_t buf_size = 2;
1724 unsigned char *buf;
1725 int retval;
1726
1727 buf = kzalloc(buf_size, GFP_KERNEL);
1728 if (!buf)
1729 return -ENOMEM;
1730
1731 buf[0] = WAC_CMD_DELETE_PAIRING;
1732 buf[1] = selector;
1733
1734 retval = wacom_set_report(wacom->hdev, HID_OUTPUT_REPORT, buf,
1735 buf_size, WAC_CMD_RETRIES);
1736 kfree(buf);
1737
1738 return retval;
1739}
1740
1741static ssize_t wacom_store_unpair_remote(struct kobject *kobj,
1742 struct kobj_attribute *attr,
1743 const char *buf, size_t count)
1744{
1745 unsigned char selector = 0;
2cf83833 1746 struct device *dev = kobj_to_dev(kobj->parent);
ee79a8f8 1747 struct hid_device *hdev = to_hid_device(dev);
72b236d6
AS
1748 struct wacom *wacom = hid_get_drvdata(hdev);
1749 int err;
1750
1751 if (!strncmp(buf, "*\n", 2)) {
1752 selector = WAC_CMD_UNPAIR_ALL;
1753 } else {
1754 hid_info(wacom->hdev, "remote: unrecognized unpair code: %s\n",
1755 buf);
1756 return -1;
1757 }
1758
1759 mutex_lock(&wacom->lock);
1760
1761 err = wacom_cmd_unpair_remote(wacom, selector);
1762 mutex_unlock(&wacom->lock);
1763
1764 return err < 0 ? err : count;
1765}
1766
1767static struct kobj_attribute unpair_remote_attr = {
1768 .attr = {.name = "unpair_remote", .mode = 0200},
1769 .store = wacom_store_unpair_remote,
1770};
1771
1772static const struct attribute *remote_unpair_attrs[] = {
1773 &unpair_remote_attr.attr,
1774 NULL
1775};
1776
83e6b40e
BT
1777static void wacom_remotes_destroy(void *data)
1778{
1779 struct wacom *wacom = data;
1780 struct wacom_remote *remote = wacom->remote;
1781
1782 if (!remote)
1783 return;
1784
1785 kobject_put(remote->remote_dir);
1786 kfifo_free(&remote->remote_fifo);
1787 wacom->remote = NULL;
1788}
1789
1790static int wacom_initialize_remotes(struct wacom *wacom)
72b236d6
AS
1791{
1792 int error = 0;
83e6b40e 1793 struct wacom_remote *remote;
72b236d6
AS
1794 int i;
1795
1796 if (wacom->wacom_wac.features.type != REMOTE)
1797 return 0;
1798
83e6b40e
BT
1799 remote = devm_kzalloc(&wacom->hdev->dev, sizeof(*wacom->remote),
1800 GFP_KERNEL);
1801 if (!remote)
1802 return -ENOMEM;
72b236d6 1803
83e6b40e
BT
1804 wacom->remote = remote;
1805
1806 spin_lock_init(&remote->remote_lock);
1807
1808 error = kfifo_alloc(&remote->remote_fifo,
1809 5 * sizeof(struct wacom_remote_data),
1810 GFP_KERNEL);
1811 if (error) {
1812 hid_err(wacom->hdev, "failed allocating remote_fifo\n");
72b236d6 1813 return -ENOMEM;
83e6b40e 1814 }
72b236d6 1815
e7749f6e
BT
1816 remote->remotes[0].group = remote0_serial_group;
1817 remote->remotes[1].group = remote1_serial_group;
1818 remote->remotes[2].group = remote2_serial_group;
1819 remote->remotes[3].group = remote3_serial_group;
1820 remote->remotes[4].group = remote4_serial_group;
83e6b40e
BT
1821
1822 remote->remote_dir = kobject_create_and_add("wacom_remote",
1823 &wacom->hdev->dev.kobj);
1824 if (!remote->remote_dir)
1825 return -ENOMEM;
1826
1827 error = sysfs_create_files(remote->remote_dir, remote_unpair_attrs);
72b236d6
AS
1828
1829 if (error) {
1830 hid_err(wacom->hdev,
1831 "cannot create sysfs group err: %d\n", error);
1832 return error;
1833 }
1834
1835 for (i = 0; i < WACOM_MAX_REMOTES; i++) {
a50aac71 1836 wacom->led.groups[i].select = WACOM_STATUS_UNKNOWN;
e7749f6e 1837 remote->remotes[i].serial = 0;
72b236d6
AS
1838 }
1839
83e6b40e
BT
1840 error = devm_add_action_or_reset(&wacom->hdev->dev,
1841 wacom_remotes_destroy, wacom);
1842 if (error)
1843 return error;
1844
72b236d6
AS
1845 return 0;
1846}
1847
d2d13f18 1848static struct input_dev *wacom_allocate_input(struct wacom *wacom)
3aac0ef1
CB
1849{
1850 struct input_dev *input_dev;
b6c79f2c 1851 struct hid_device *hdev = wacom->hdev;
3aac0ef1 1852 struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
3aac0ef1 1853
3dad188e 1854 input_dev = devm_input_allocate_device(&hdev->dev);
d2d13f18
BT
1855 if (!input_dev)
1856 return NULL;
3aac0ef1 1857
2bdd163c 1858 input_dev->name = wacom_wac->features.name;
b6c79f2c
BT
1859 input_dev->phys = hdev->phys;
1860 input_dev->dev.parent = &hdev->dev;
3aac0ef1
CB
1861 input_dev->open = wacom_open;
1862 input_dev->close = wacom_close;
b6c79f2c
BT
1863 input_dev->uniq = hdev->uniq;
1864 input_dev->id.bustype = hdev->bus;
1865 input_dev->id.vendor = hdev->vendor;
12969e3b 1866 input_dev->id.product = wacom_wac->pid ? wacom_wac->pid : hdev->product;
b6c79f2c 1867 input_dev->id.version = hdev->version;
3aac0ef1
CB
1868 input_set_drvdata(input_dev, wacom);
1869
d2d13f18
BT
1870 return input_dev;
1871}
1872
d9f2d203
JG
1873static int wacom_allocate_inputs(struct wacom *wacom)
1874{
1875 struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1876
1877 wacom_wac->pen_input = wacom_allocate_input(wacom);
1878 wacom_wac->touch_input = wacom_allocate_input(wacom);
1879 wacom_wac->pad_input = wacom_allocate_input(wacom);
3dad188e
BT
1880 if (!wacom_wac->pen_input ||
1881 !wacom_wac->touch_input ||
1882 !wacom_wac->pad_input)
d9f2d203 1883 return -ENOMEM;
d9f2d203 1884
2bdd163c 1885 wacom_wac->pen_input->name = wacom_wac->pen_name;
d9f2d203
JG
1886 wacom_wac->touch_input->name = wacom_wac->touch_name;
1887 wacom_wac->pad_input->name = wacom_wac->pad_name;
1888
1889 return 0;
1890}
1891
2546dacd
BT
1892static int wacom_register_inputs(struct wacom *wacom)
1893{
2a6cdbdd 1894 struct input_dev *pen_input_dev, *touch_input_dev, *pad_input_dev;
2546dacd 1895 struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
2636a3f2 1896 int error = 0;
2546dacd 1897
2a6cdbdd
JG
1898 pen_input_dev = wacom_wac->pen_input;
1899 touch_input_dev = wacom_wac->touch_input;
2546dacd
BT
1900 pad_input_dev = wacom_wac->pad_input;
1901
2a6cdbdd 1902 if (!pen_input_dev || !touch_input_dev || !pad_input_dev)
2546dacd
BT
1903 return -EINVAL;
1904
2a6cdbdd
JG
1905 error = wacom_setup_pen_input_capabilities(pen_input_dev, wacom_wac);
1906 if (error) {
1907 /* no pen in use on this interface */
1908 input_free_device(pen_input_dev);
1909 wacom_wac->pen_input = NULL;
1910 pen_input_dev = NULL;
1911 } else {
1912 error = input_register_device(pen_input_dev);
1913 if (error)
3dad188e 1914 goto fail;
2a6cdbdd
JG
1915 }
1916
1917 error = wacom_setup_touch_input_capabilities(touch_input_dev, wacom_wac);
1918 if (error) {
1919 /* no touch in use on this interface */
1920 input_free_device(touch_input_dev);
1921 wacom_wac->touch_input = NULL;
1922 touch_input_dev = NULL;
1923 } else {
1924 error = input_register_device(touch_input_dev);
30ebc1ae 1925 if (error)
3dad188e 1926 goto fail;
30ebc1ae 1927 }
1963518b 1928
d2d13f18
BT
1929 error = wacom_setup_pad_input_capabilities(pad_input_dev, wacom_wac);
1930 if (error) {
1931 /* no pad in use on this interface */
1932 input_free_device(pad_input_dev);
1933 wacom_wac->pad_input = NULL;
1934 pad_input_dev = NULL;
1935 } else {
1936 error = input_register_device(pad_input_dev);
1937 if (error)
3dad188e 1938 goto fail;
d2d13f18
BT
1939 }
1940
1963518b 1941 return 0;
3aac0ef1 1942
3dad188e
BT
1943fail:
1944 wacom_wac->pad_input = NULL;
2a6cdbdd 1945 wacom_wac->touch_input = NULL;
2a6cdbdd 1946 wacom_wac->pen_input = NULL;
3aac0ef1
CB
1947 return error;
1948}
1949
0be01712
JG
1950/*
1951 * Not all devices report physical dimensions from HID.
1952 * Compute the default from hardcoded logical dimension
1953 * and resolution before driver overwrites them.
1954 */
1955static void wacom_set_default_phy(struct wacom_features *features)
1956{
1957 if (features->x_resolution) {
1958 features->x_phy = (features->x_max * 100) /
1959 features->x_resolution;
1960 features->y_phy = (features->y_max * 100) /
1961 features->y_resolution;
1962 }
1963}
1964
1965static void wacom_calculate_res(struct wacom_features *features)
1966{
1967 /* set unit to "100th of a mm" for devices not reported by HID */
1968 if (!features->unit) {
1969 features->unit = 0x11;
1970 features->unitExpo = -3;
1971 }
1972
1973 features->x_resolution = wacom_calc_hid_res(features->x_max,
1974 features->x_phy,
1975 features->unit,
1976 features->unitExpo);
1977 features->y_resolution = wacom_calc_hid_res(features->y_max,
1978 features->y_phy,
1979 features->unit,
1980 features->unitExpo);
1981}
1982
fce9957d
JG
1983void wacom_battery_work(struct work_struct *work)
1984{
d17d1f17 1985 struct wacom *wacom = container_of(work, struct wacom, battery_work);
fce9957d
JG
1986
1987 if ((wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&
59d69bc8 1988 !wacom->battery.battery) {
fce9957d
JG
1989 wacom_initialize_battery(wacom);
1990 }
1991 else if (!(wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&
59d69bc8 1992 wacom->battery.battery) {
fce9957d
JG
1993 wacom_destroy_battery(wacom);
1994 }
1995}
1996
01c846f9
BT
1997static size_t wacom_compute_pktlen(struct hid_device *hdev)
1998{
1999 struct hid_report_enum *report_enum;
2000 struct hid_report *report;
2001 size_t size = 0;
2002
2003 report_enum = hdev->report_enum + HID_INPUT_REPORT;
2004
2005 list_for_each_entry(report, &report_enum->report_list, list) {
dabb05c6 2006 size_t report_size = hid_report_len(report);
01c846f9
BT
2007 if (report_size > size)
2008 size = report_size;
2009 }
2010
2011 return size;
2012}
2013
fd5f92b6 2014static void wacom_update_name(struct wacom *wacom, const char *suffix)
c24eab4e
PC
2015{
2016 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2017 struct wacom_features *features = &wacom_wac->features;
44b5250b 2018 char name[WACOM_NAME_MAX];
c24eab4e
PC
2019
2020 /* Generic devices name unspecified */
2021 if ((features->type == HID_GENERIC) && !strcmp("Wacom HID", features->name)) {
2022 if (strstr(wacom->hdev->name, "Wacom") ||
2023 strstr(wacom->hdev->name, "wacom") ||
2024 strstr(wacom->hdev->name, "WACOM")) {
2025 /* name is in HID descriptor, use it */
44b5250b 2026 strlcpy(name, wacom->hdev->name, sizeof(name));
c24eab4e
PC
2027
2028 /* strip out excess whitespaces */
2029 while (1) {
44b5250b 2030 char *gap = strstr(name, " ");
c24eab4e
PC
2031 if (gap == NULL)
2032 break;
2033 /* shift everything including the terminator */
2034 memmove(gap, gap+1, strlen(gap));
2035 }
f2209d4a
JG
2036
2037 /* strip off excessive prefixing */
2038 if (strstr(name, "Wacom Co.,Ltd. Wacom ") == name) {
2039 int n = strlen(name);
2040 int x = strlen("Wacom Co.,Ltd. ");
2041 memmove(name, name+x, n-x+1);
2042 }
2043 if (strstr(name, "Wacom Co., Ltd. Wacom ") == name) {
2044 int n = strlen(name);
2045 int x = strlen("Wacom Co., Ltd. ");
2046 memmove(name, name+x, n-x+1);
2047 }
2048
c24eab4e 2049 /* get rid of trailing whitespace */
44b5250b
JG
2050 if (name[strlen(name)-1] == ' ')
2051 name[strlen(name)-1] = '\0';
c24eab4e
PC
2052 } else {
2053 /* no meaningful name retrieved. use product ID */
44b5250b 2054 snprintf(name, sizeof(name),
c24eab4e
PC
2055 "%s %X", features->name, wacom->hdev->product);
2056 }
2057 } else {
44b5250b 2058 strlcpy(name, features->name, sizeof(name));
c24eab4e
PC
2059 }
2060
9956953e
BT
2061 snprintf(wacom_wac->name, sizeof(wacom_wac->name), "%s%s",
2062 name, suffix);
2063
c24eab4e 2064 /* Append the device type to the name */
2a6cdbdd 2065 snprintf(wacom_wac->pen_name, sizeof(wacom_wac->pen_name),
fd5f92b6 2066 "%s%s Pen", name, suffix);
2a6cdbdd 2067 snprintf(wacom_wac->touch_name, sizeof(wacom_wac->touch_name),
fd5f92b6 2068 "%s%s Finger", name, suffix);
c24eab4e 2069 snprintf(wacom_wac->pad_name, sizeof(wacom_wac->pad_name),
fd5f92b6 2070 "%s%s Pad", name, suffix);
c24eab4e
PC
2071}
2072
84dfbd7f
BT
2073static void wacom_release_resources(struct wacom *wacom)
2074{
2075 struct hid_device *hdev = wacom->hdev;
2076
2077 if (!wacom->resources)
2078 return;
2079
2080 devres_release_group(&hdev->dev, wacom);
2081
2082 wacom->resources = false;
2083
2084 wacom->wacom_wac.pen_input = NULL;
2085 wacom->wacom_wac.touch_input = NULL;
2086 wacom->wacom_wac.pad_input = NULL;
2087}
2088
d2ec58ae
AAS
2089static void wacom_set_shared_values(struct wacom_wac *wacom_wac)
2090{
2091 if (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH) {
2092 wacom_wac->shared->type = wacom_wac->features.type;
2093 wacom_wac->shared->touch_input = wacom_wac->touch_input;
2094 }
2095
2096 if (wacom_wac->has_mute_touch_switch)
2097 wacom_wac->shared->has_mute_touch_switch = true;
2098
2099 if (wacom_wac->shared->has_mute_touch_switch &&
2100 wacom_wac->shared->touch_input) {
2101 set_bit(EV_SW, wacom_wac->shared->touch_input->evbit);
2102 input_set_capability(wacom_wac->shared->touch_input, EV_SW,
2103 SW_MUTE_DEVICE);
2104 }
2105}
2106
fd5f92b6 2107static int wacom_parse_and_register(struct wacom *wacom, bool wireless)
3bea733a 2108{
c58ac3a8
BT
2109 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2110 struct wacom_features *features = &wacom_wac->features;
2111 struct hid_device *hdev = wacom->hdev;
e33da8a5 2112 int error;
7704ac93 2113 unsigned int connect_mask = HID_CONNECT_HIDRAW;
3bea733a 2114
01c846f9 2115 features->pktlen = wacom_compute_pktlen(hdev);
c58ac3a8
BT
2116 if (features->pktlen > WACOM_PKGLEN_MAX)
2117 return -EINVAL;
3bea733a 2118
84dfbd7f
BT
2119 if (!devres_open_group(&hdev->dev, wacom, GFP_KERNEL))
2120 return -ENOMEM;
2121
2122 wacom->resources = true;
2123
3f14a63a
JG
2124 error = wacom_allocate_inputs(wacom);
2125 if (error)
3888b0d5 2126 goto fail;
494078b0 2127
8c97a765
BT
2128 /*
2129 * Bamboo Pad has a generic hid handling for the Pen, and we switch it
2130 * into debug mode for the touch part.
2131 * We ignore the other interfaces.
2132 */
2133 if (features->type == BAMBOO_PAD) {
2134 if (features->pktlen == WACOM_PKGLEN_PENABLED) {
2135 features->type = HID_GENERIC;
2136 } else if ((features->pktlen != WACOM_PKGLEN_BPAD_TOUCH) &&
2137 (features->pktlen != WACOM_PKGLEN_BPAD_TOUCH_USB)) {
2138 error = -ENODEV;
3888b0d5 2139 goto fail;
8c97a765
BT
2140 }
2141 }
2142
401d7d10
PC
2143 /* set the default size in case we do not get them from hid */
2144 wacom_set_default_phy(features);
2145
f393ee2b 2146 /* Retrieve the physical and logical size for touch devices */
c669fb2b 2147 wacom_retrieve_hid_descriptor(hdev, features);
42f4f272 2148 wacom_setup_device_quirks(wacom);
042628ab 2149
aa86b18c
JG
2150 if (features->device_type == WACOM_DEVICETYPE_NONE &&
2151 features->type != WIRELESS) {
8e116d31
JG
2152 error = features->type == HID_GENERIC ? -ENODEV : 0;
2153
042628ab 2154 dev_warn(&hdev->dev, "Unknown device_type for '%s'. %s.",
8e116d31
JG
2155 hdev->name,
2156 error ? "Ignoring" : "Assuming pen");
2157
2158 if (error)
3888b0d5 2159 goto fail;
042628ab 2160
aa86b18c 2161 features->device_type |= WACOM_DEVICETYPE_PEN;
042628ab
JG
2162 }
2163
401d7d10
PC
2164 wacom_calculate_res(features);
2165
fd5f92b6 2166 wacom_update_name(wacom, wireless ? " (WL)" : "");
4492efff 2167
8b407359
AAS
2168 /* pen only Bamboo neither support touch nor pad */
2169 if ((features->type == BAMBOO_PEN) &&
2170 ((features->device_type & WACOM_DEVICETYPE_TOUCH) ||
2171 (features->device_type & WACOM_DEVICETYPE_PAD))) {
2172 error = -ENODEV;
2173 goto fail;
2174 }
2175
a9ce7856
JG
2176 error = wacom_add_shared_data(hdev);
2177 if (error)
2178 goto fail;
49b764ae 2179
ccad85cc 2180 if (!(features->device_type & WACOM_DEVICETYPE_WL_MONITOR) &&
f81a1295
BT
2181 (features->quirks & WACOM_QUIRK_BATTERY)) {
2182 error = wacom_initialize_battery(wacom);
2183 if (error)
3888b0d5 2184 goto fail;
f81a1295
BT
2185 }
2186
3f14a63a
JG
2187 error = wacom_register_inputs(wacom);
2188 if (error)
3888b0d5 2189 goto fail;
f81a1295 2190
b62f6465 2191 if (wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD) {
85d2c77b
BT
2192 error = wacom_initialize_leds(wacom);
2193 if (error)
3888b0d5 2194 goto fail;
85d2c77b 2195
83e6b40e 2196 error = wacom_initialize_remotes(wacom);
b62f6465 2197 if (error)
3888b0d5 2198 goto fail;
b62f6465
BT
2199 }
2200
7704ac93
BT
2201 if (features->type == HID_GENERIC)
2202 connect_mask |= HID_CONNECT_DRIVER;
2203
29b47391 2204 /* Regular HID work starts now */
7704ac93 2205 error = hid_hw_start(hdev, connect_mask);
29b47391
BT
2206 if (error) {
2207 hid_err(hdev, "hw start failed\n");
3888b0d5 2208 goto fail;
d3825d51 2209 }
961794a0 2210
fd5f92b6
BT
2211 if (!wireless) {
2212 /* Note that if query fails it is not a hard failure */
a544c619 2213 wacom_query_tablet_data(wacom);
fd5f92b6 2214 }
86e88f0e
JG
2215
2216 /* touch only Bamboo doesn't support pen */
2217 if ((features->type == BAMBOO_TOUCH) &&
2218 (features->device_type & WACOM_DEVICETYPE_PEN)) {
4d20c332
AAS
2219 cancel_delayed_work_sync(&wacom->init_work);
2220 _wacom_query_tablet_data(wacom);
86e88f0e 2221 error = -ENODEV;
b62f6465 2222 goto fail_quirks;
86e88f0e
JG
2223 }
2224
ccad85cc 2225 if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR)
29b47391
BT
2226 error = hid_hw_open(hdev);
2227
d2ec58ae 2228 wacom_set_shared_values(wacom_wac);
84dfbd7f
BT
2229 devres_close_group(&hdev->dev, wacom);
2230
3bea733a
PC
2231 return 0;
2232
b62f6465 2233fail_quirks:
c58ac3a8 2234 hid_hw_stop(hdev);
3888b0d5 2235fail:
84dfbd7f 2236 wacom_release_resources(wacom);
c58ac3a8
BT
2237 return error;
2238}
2239
a2f091af
BT
2240static void wacom_wireless_work(struct work_struct *work)
2241{
d17d1f17 2242 struct wacom *wacom = container_of(work, struct wacom, wireless_work);
a2f091af
BT
2243 struct usb_device *usbdev = wacom->usbdev;
2244 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2245 struct hid_device *hdev1, *hdev2;
2246 struct wacom *wacom1, *wacom2;
2247 struct wacom_wac *wacom_wac1, *wacom_wac2;
2248 int error;
2249
2250 /*
2251 * Regardless if this is a disconnect or a new tablet,
2252 * remove any existing input and battery devices.
2253 */
2254
2255 wacom_destroy_battery(wacom);
2256
2257 /* Stylus interface */
2258 hdev1 = usb_get_intfdata(usbdev->config->interface[1]);
2259 wacom1 = hid_get_drvdata(hdev1);
2260 wacom_wac1 = &(wacom1->wacom_wac);
84dfbd7f 2261 wacom_release_resources(wacom1);
a2f091af
BT
2262
2263 /* Touch interface */
2264 hdev2 = usb_get_intfdata(usbdev->config->interface[2]);
2265 wacom2 = hid_get_drvdata(hdev2);
2266 wacom_wac2 = &(wacom2->wacom_wac);
84dfbd7f 2267 wacom_release_resources(wacom2);
a2f091af
BT
2268
2269 if (wacom_wac->pid == 0) {
2270 hid_info(wacom->hdev, "wireless tablet disconnected\n");
a2f091af
BT
2271 } else {
2272 const struct hid_device_id *id = wacom_ids;
2273
2274 hid_info(wacom->hdev, "wireless tablet connected with PID %x\n",
2275 wacom_wac->pid);
2276
2277 while (id->bus) {
2278 if (id->vendor == USB_VENDOR_ID_WACOM &&
2279 id->product == wacom_wac->pid)
2280 break;
2281 id++;
2282 }
2283
2284 if (!id->bus) {
2285 hid_info(wacom->hdev, "ignoring unknown PID.\n");
2286 return;
2287 }
2288
2289 /* Stylus interface */
2290 wacom_wac1->features =
2291 *((struct wacom_features *)id->driver_data);
fd5f92b6 2292
a2f091af 2293 wacom_wac1->pid = wacom_wac->pid;
fd5f92b6
BT
2294 hid_hw_stop(hdev1);
2295 error = wacom_parse_and_register(wacom1, true);
a2f091af
BT
2296 if (error)
2297 goto fail;
2298
2299 /* Touch interface */
2300 if (wacom_wac1->features.touch_max ||
2301 (wacom_wac1->features.type >= INTUOSHT &&
2302 wacom_wac1->features.type <= BAMBOO_PT)) {
2303 wacom_wac2->features =
2304 *((struct wacom_features *)id->driver_data);
a2f091af 2305 wacom_wac2->pid = wacom_wac->pid;
fd5f92b6
BT
2306 hid_hw_stop(hdev2);
2307 error = wacom_parse_and_register(wacom2, true);
a2f091af
BT
2308 if (error)
2309 goto fail;
a2f091af
BT
2310 }
2311
9956953e
BT
2312 strlcpy(wacom_wac->name, wacom_wac1->name,
2313 sizeof(wacom_wac->name));
a2f091af
BT
2314 error = wacom_initialize_battery(wacom);
2315 if (error)
2316 goto fail;
2317 }
2318
2319 return;
2320
2321fail:
84dfbd7f 2322 wacom_release_resources(wacom1);
84dfbd7f 2323 wacom_release_resources(wacom2);
a2f091af
BT
2324 return;
2325}
2326
04bfa27b
BT
2327static void wacom_remote_destroy_one(struct wacom *wacom, unsigned int index)
2328{
2329 struct wacom_remote *remote = wacom->remote;
e7749f6e 2330 u32 serial = remote->remotes[index].serial;
04bfa27b 2331 int i;
7c35dc3c
BT
2332 unsigned long flags;
2333
2334 spin_lock_irqsave(&remote->remote_lock, flags);
2335 remote->remotes[index].registered = false;
2336 spin_unlock_irqrestore(&remote->remote_lock, flags);
04bfa27b 2337
9f1015d4
BT
2338 if (remote->remotes[index].battery.battery)
2339 devres_release_group(&wacom->hdev->dev,
2340 &remote->remotes[index].battery.bat_desc);
2341
e7749f6e
BT
2342 if (remote->remotes[index].group.name)
2343 devres_release_group(&wacom->hdev->dev,
2344 &remote->remotes[index]);
04bfa27b
BT
2345
2346 for (i = 0; i < WACOM_MAX_REMOTES; i++) {
e7749f6e
BT
2347 if (remote->remotes[i].serial == serial) {
2348 remote->remotes[i].serial = 0;
2349 remote->remotes[i].group.name = NULL;
7c35dc3c 2350 remote->remotes[i].registered = false;
9f1015d4 2351 remote->remotes[i].battery.battery = NULL;
04bfa27b
BT
2352 wacom->led.groups[i].select = WACOM_STATUS_UNKNOWN;
2353 }
2354 }
2355}
2356
2357static int wacom_remote_create_one(struct wacom *wacom, u32 serial,
2358 unsigned int index)
2359{
2360 struct wacom_remote *remote = wacom->remote;
f9036bd4 2361 struct device *dev = &wacom->hdev->dev;
04bfa27b
BT
2362 int error, k;
2363
2364 /* A remote can pair more than once with an EKR,
2365 * check to make sure this serial isn't already paired.
2366 */
2367 for (k = 0; k < WACOM_MAX_REMOTES; k++) {
e7749f6e 2368 if (remote->remotes[k].serial == serial)
04bfa27b
BT
2369 break;
2370 }
2371
2372 if (k < WACOM_MAX_REMOTES) {
e7749f6e 2373 remote->remotes[index].serial = serial;
04bfa27b
BT
2374 return 0;
2375 }
2376
e7749f6e 2377 if (!devres_open_group(dev, &remote->remotes[index], GFP_KERNEL))
f9036bd4
BT
2378 return -ENOMEM;
2379
04bfa27b
BT
2380 error = wacom_remote_create_attr_group(wacom, serial, index);
2381 if (error)
f9036bd4 2382 goto fail;
04bfa27b 2383
7c35dc3c
BT
2384 remote->remotes[index].input = wacom_allocate_input(wacom);
2385 if (!remote->remotes[index].input) {
2386 error = -ENOMEM;
2387 goto fail;
2388 }
2389 remote->remotes[index].input->uniq = remote->remotes[index].group.name;
2390 remote->remotes[index].input->name = wacom->wacom_wac.pad_name;
2391
2392 if (!remote->remotes[index].input->name) {
2393 error = -EINVAL;
2394 goto fail;
2395 }
2396
2397 error = wacom_setup_pad_input_capabilities(remote->remotes[index].input,
2398 &wacom->wacom_wac);
2399 if (error)
2400 goto fail;
2401
e7749f6e 2402 remote->remotes[index].serial = serial;
04bfa27b 2403
7c35dc3c
BT
2404 error = input_register_device(remote->remotes[index].input);
2405 if (error)
2406 goto fail;
2407
97f5541f
BT
2408 error = wacom_led_groups_alloc_and_register_one(
2409 &remote->remotes[index].input->dev,
2410 wacom, index, 3, true);
2411 if (error)
2412 goto fail;
2413
7c35dc3c
BT
2414 remote->remotes[index].registered = true;
2415
e7749f6e 2416 devres_close_group(dev, &remote->remotes[index]);
04bfa27b 2417 return 0;
f9036bd4
BT
2418
2419fail:
e7749f6e
BT
2420 devres_release_group(dev, &remote->remotes[index]);
2421 remote->remotes[index].serial = 0;
f9036bd4 2422 return error;
04bfa27b
BT
2423}
2424
9f1015d4
BT
2425static int wacom_remote_attach_battery(struct wacom *wacom, int index)
2426{
2427 struct wacom_remote *remote = wacom->remote;
2428 int error;
2429
2430 if (!remote->remotes[index].registered)
2431 return 0;
2432
2433 if (remote->remotes[index].battery.battery)
2434 return 0;
2435
2436 if (wacom->led.groups[index].select == WACOM_STATUS_UNKNOWN)
2437 return 0;
2438
2439 error = __wacom_initialize_battery(wacom,
2440 &wacom->remote->remotes[index].battery);
2441 if (error)
2442 return error;
2443
2444 return 0;
2445}
2446
e6f2813a
BT
2447static void wacom_remote_work(struct work_struct *work)
2448{
2449 struct wacom *wacom = container_of(work, struct wacom, remote_work);
83e6b40e 2450 struct wacom_remote *remote = wacom->remote;
e6f2813a
BT
2451 struct wacom_remote_data data;
2452 unsigned long flags;
2453 unsigned int count;
2454 u32 serial;
04bfa27b 2455 int i;
e6f2813a 2456
83e6b40e 2457 spin_lock_irqsave(&remote->remote_lock, flags);
e6f2813a 2458
83e6b40e 2459 count = kfifo_out(&remote->remote_fifo, &data, sizeof(data));
e6f2813a
BT
2460
2461 if (count != sizeof(data)) {
2462 hid_err(wacom->hdev,
2463 "workitem triggered without status available\n");
83e6b40e 2464 spin_unlock_irqrestore(&remote->remote_lock, flags);
e6f2813a
BT
2465 return;
2466 }
2467
83e6b40e 2468 if (!kfifo_is_empty(&remote->remote_fifo))
e6f2813a
BT
2469 wacom_schedule_work(&wacom->wacom_wac, WACOM_WORKER_REMOTE);
2470
83e6b40e 2471 spin_unlock_irqrestore(&remote->remote_lock, flags);
e6f2813a
BT
2472
2473 for (i = 0; i < WACOM_MAX_REMOTES; i++) {
2474 serial = data.remote[i].serial;
2475 if (data.remote[i].connected) {
2476
9f1015d4
BT
2477 if (remote->remotes[i].serial == serial) {
2478 wacom_remote_attach_battery(wacom, i);
e6f2813a 2479 continue;
9f1015d4 2480 }
e6f2813a 2481
e7749f6e 2482 if (remote->remotes[i].serial)
04bfa27b 2483 wacom_remote_destroy_one(wacom, i);
e6f2813a 2484
04bfa27b 2485 wacom_remote_create_one(wacom, serial, i);
e6f2813a 2486
e7749f6e 2487 } else if (remote->remotes[i].serial) {
04bfa27b 2488 wacom_remote_destroy_one(wacom, i);
e6f2813a
BT
2489 }
2490 }
2491}
2492
c58ac3a8
BT
2493static int wacom_probe(struct hid_device *hdev,
2494 const struct hid_device_id *id)
2495{
2496 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
2497 struct usb_device *dev = interface_to_usbdev(intf);
2498 struct wacom *wacom;
2499 struct wacom_wac *wacom_wac;
2500 struct wacom_features *features;
2501 int error;
2502
2503 if (!id->driver_data)
2504 return -EINVAL;
2505
2506 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
2507
2508 /* hid-core sets this quirk for the boot interface */
2509 hdev->quirks &= ~HID_QUIRK_NOGET;
2510
19b64330 2511 wacom = devm_kzalloc(&hdev->dev, sizeof(struct wacom), GFP_KERNEL);
c58ac3a8
BT
2512 if (!wacom)
2513 return -ENOMEM;
2514
2515 hid_set_drvdata(hdev, wacom);
2516 wacom->hdev = hdev;
2517
2518 wacom_wac = &wacom->wacom_wac;
2519 wacom_wac->features = *((struct wacom_features *)id->driver_data);
2520 features = &wacom_wac->features;
2521
2522 if (features->check_for_hid_type && features->hid_type != hdev->type) {
2523 error = -ENODEV;
3888b0d5 2524 goto fail;
c58ac3a8
BT
2525 }
2526
c6fa1aeb 2527 wacom_wac->hid_data.inputmode = -1;
326ea2a9 2528 wacom_wac->mode_report = -1;
c6fa1aeb 2529
c58ac3a8
BT
2530 wacom->usbdev = dev;
2531 wacom->intf = intf;
2532 mutex_init(&wacom->lock);
a544c619 2533 INIT_DELAYED_WORK(&wacom->init_work, wacom_init_work);
d17d1f17
BT
2534 INIT_WORK(&wacom->wireless_work, wacom_wireless_work);
2535 INIT_WORK(&wacom->battery_work, wacom_battery_work);
e6f2813a 2536 INIT_WORK(&wacom->remote_work, wacom_remote_work);
c58ac3a8
BT
2537
2538 /* ask for the report descriptor to be loaded by HID */
2539 error = hid_parse(hdev);
2540 if (error) {
2541 hid_err(hdev, "parse failed\n");
3888b0d5 2542 goto fail;
c58ac3a8
BT
2543 }
2544
fd5f92b6 2545 error = wacom_parse_and_register(wacom, false);
c58ac3a8 2546 if (error)
3888b0d5 2547 goto fail;
c58ac3a8
BT
2548
2549 if (hdev->bus == BUS_BLUETOOTH) {
2550 error = device_create_file(&hdev->dev, &dev_attr_speed);
2551 if (error)
2552 hid_warn(hdev,
2553 "can't create sysfs speed attribute err: %d\n",
2554 error);
2555 }
2556
2557 return 0;
2558
3888b0d5 2559fail:
29b47391 2560 hid_set_drvdata(hdev, NULL);
5014186d 2561 return error;
3bea733a
PC
2562}
2563
29b47391 2564static void wacom_remove(struct hid_device *hdev)
3bea733a 2565{
29b47391 2566 struct wacom *wacom = hid_get_drvdata(hdev);
f6205161
BT
2567 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2568 struct wacom_features *features = &wacom_wac->features;
2569
2570 if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR)
2571 hid_hw_close(hdev);
3bea733a 2572
29b47391 2573 hid_hw_stop(hdev);
e7224094 2574
a544c619 2575 cancel_delayed_work_sync(&wacom->init_work);
d17d1f17
BT
2576 cancel_work_sync(&wacom->wireless_work);
2577 cancel_work_sync(&wacom->battery_work);
e6f2813a 2578 cancel_work_sync(&wacom->remote_work);
f81a1295
BT
2579 if (hdev->bus == BUS_BLUETOOTH)
2580 device_remove_file(&hdev->dev, &dev_attr_speed);
e7224094 2581
c0265a94
BT
2582 /* make sure we don't trigger the LEDs */
2583 wacom_led_groups_release(wacom);
b6b1f19b
AAS
2584
2585 if (wacom->wacom_wac.features.type != REMOTE)
2586 wacom_release_resources(wacom);
5b779fc5 2587
29b47391 2588 hid_set_drvdata(hdev, NULL);
e7224094
ON
2589}
2590
41a74581 2591#ifdef CONFIG_PM
29b47391 2592static int wacom_resume(struct hid_device *hdev)
e7224094 2593{
29b47391 2594 struct wacom *wacom = hid_get_drvdata(hdev);
e7224094
ON
2595
2596 mutex_lock(&wacom->lock);
38101475
PC
2597
2598 /* switch to wacom mode first */
a544c619 2599 _wacom_query_tablet_data(wacom);
5d7e7d47 2600 wacom_led_control(wacom);
38101475 2601
e7224094
ON
2602 mutex_unlock(&wacom->lock);
2603
29b47391 2604 return 0;
e7224094
ON
2605}
2606
29b47391 2607static int wacom_reset_resume(struct hid_device *hdev)
e7224094 2608{
29b47391 2609 return wacom_resume(hdev);
3bea733a 2610}
41a74581 2611#endif /* CONFIG_PM */
3bea733a 2612
29b47391 2613static struct hid_driver wacom_driver = {
3bea733a 2614 .name = "wacom",
b036f6fb 2615 .id_table = wacom_ids,
3bea733a 2616 .probe = wacom_probe,
29b47391 2617 .remove = wacom_remove,
7704ac93 2618 .report = wacom_wac_report,
29b47391 2619#ifdef CONFIG_PM
e7224094
ON
2620 .resume = wacom_resume,
2621 .reset_resume = wacom_reset_resume,
29b47391
BT
2622#endif
2623 .raw_event = wacom_raw_event,
3bea733a 2624};
29b47391 2625module_hid_driver(wacom_driver);
f2e0a7d4
BT
2626
2627MODULE_VERSION(DRIVER_VERSION);
2628MODULE_AUTHOR(DRIVER_AUTHOR);
2629MODULE_DESCRIPTION(DRIVER_DESC);
7021b600 2630MODULE_LICENSE("GPL");