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UBUNTU: Ubuntu-5.15.0-39.42
[mirror_ubuntu-jammy-kernel.git] / drivers / hid / wacom_sys.c
CommitLineData
2874c5fd 1// SPDX-License-Identifier: GPL-2.0-or-later
3bea733a 2/*
4104d13f 3 * drivers/input/tablet/wacom_sys.c
3bea733a 4 *
232f5693 5 * USB Wacom tablet support - system specific code
3bea733a
PC		 6 */
7
8/*
3bea733a
PC		 9 */
10
3bea733a 11#include "wacom_wac.h"
51269fe8 12#include "wacom.h"
b58ba1ba 13#include <linux/input/mt.h>
3bea733a 14
a417ea44 15#define WAC_MSG_RETRIES 5
5d7e7d47
EH		 16#define WAC_CMD_RETRIES 10
17
e0984bc3
PC		 18#define DEV_ATTR_RW_PERM (S_IRUGO | S_IWUSR | S_IWGRP)
19#define DEV_ATTR_WO_PERM (S_IWUSR | S_IWGRP)
72b236d6 20#define DEV_ATTR_RO_PERM (S_IRUSR | S_IRGRP)
e0984bc3 21
c64d8834
PC		 22static int wacom_get_report(struct hid_device *hdev, u8 type, u8 *buf,
23 size_t size, unsigned int retries)
3bea733a 24{
5d7e7d47
EH		 25 int retval;
26
27 do {
c64d8834 28 retval = hid_hw_raw_request(hdev, buf[0], buf, size, type,
27b20a9d 29 HID_REQ_GET_REPORT);
aef3156d
JG		 30 } while ((retval == -ETIMEDOUT || retval == -EAGAIN) && --retries);
31
32 if (retval < 0)
33 hid_err(hdev, "wacom_get_report: ran out of retries "
34 "(last error = %d)\n", retval);
5d7e7d47
EH		 35
36 return retval;
3bea733a
PC		 37}
38
296b7378
PF		 39static int wacom_set_report(struct hid_device *hdev, u8 type, u8 *buf,
40 size_t size, unsigned int retries)
3bea733a 41{
5d7e7d47
EH		 42 int retval;
43
44 do {
296b7378 45 retval = hid_hw_raw_request(hdev, buf[0], buf, size, type,
27b20a9d 46 HID_REQ_SET_REPORT);
aef3156d
JG		 47 } while ((retval == -ETIMEDOUT || retval == -EAGAIN) && --retries);
48
49 if (retval < 0)
50 hid_err(hdev, "wacom_set_report: ran out of retries "
51 "(last error = %d)\n", retval);
5d7e7d47
EH		 52
53 return retval;
3bea733a
PC		 54}
55
83417206
JG		 56static void wacom_wac_queue_insert(struct hid_device *hdev,
57 struct kfifo_rec_ptr_2 *fifo,
58 u8 *raw_data, int size)
59{
60 bool warned = false;
61
62 while (kfifo_avail(fifo) < size) {
63 if (!warned)
64 hid_warn(hdev, "%s: kfifo has filled, starting to drop events\n", __func__);
65 warned = true;
66
67 kfifo_skip(fifo);
68 }
69
70 kfifo_in(fifo, raw_data, size);
71}
72
73static void wacom_wac_queue_flush(struct hid_device *hdev,
74 struct kfifo_rec_ptr_2 *fifo)
75{
76 while (!kfifo_is_empty(fifo)) {
77 u8 buf[WACOM_PKGLEN_MAX];
78 int size;
79 int err;
80
81 size = kfifo_out(fifo, buf, sizeof(buf));
82 err = hid_report_raw_event(hdev, HID_INPUT_REPORT, buf, size, false);
83 if (err) {
84 hid_warn(hdev, "%s: unable to flush event due to error %d\n",
85 __func__, err);
86 }
87 }
88}
89
90static int wacom_wac_pen_serial_enforce(struct hid_device *hdev,
073b50bc 91 struct hid_report *report, u8 *raw_data, int report_size)
83417206
JG		 92{
93 struct wacom *wacom = hid_get_drvdata(hdev);
94 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
95 struct wacom_features *features = &wacom_wac->features;
96 bool flush = false;
97 bool insert = false;
98 int i, j;
99
100 if (wacom_wac->serial[0] || !(features->quirks & WACOM_QUIRK_TOOLSERIAL))
101 return 0;
102
103 /* Queue events which have invalid tool type or serial number */
104 for (i = 0; i < report->maxfield; i++) {
105 for (j = 0; j < report->field[i]->maxusage; j++) {
106 struct hid_field *field = report->field[i];
107 struct hid_usage *usage = &field->usage[j];
108 unsigned int equivalent_usage = wacom_equivalent_usage(usage->hid);
109 unsigned int offset;
110 unsigned int size;
111 unsigned int value;
112
113 if (equivalent_usage != HID_DG_INRANGE &&
114 equivalent_usage != HID_DG_TOOLSERIALNUMBER &&
115 equivalent_usage != WACOM_HID_WD_SERIALHI &&
116 equivalent_usage != WACOM_HID_WD_TOOLTYPE)
117 continue;
118
119 offset = field->report_offset;
120 size = field->report_size;
121 value = hid_field_extract(hdev, raw_data+1, offset + j * size, size);
122
123 /* If we go out of range, we need to flush the queue ASAP */
124 if (equivalent_usage == HID_DG_INRANGE)
125 value = !value;
126
127 if (value) {
128 flush = true;
129 switch (equivalent_usage) {
130 case HID_DG_TOOLSERIALNUMBER:
131 wacom_wac->serial[0] = value;
132 break;
133
134 case WACOM_HID_WD_SERIALHI:
135 wacom_wac->serial[0] |= ((__u64)value) << 32;
136 break;
137
138 case WACOM_HID_WD_TOOLTYPE:
139 wacom_wac->id[0] = value;
140 break;
141 }
142 }
143 else {
144 insert = true;
145 }
146 }
147 }
148
149 if (flush)
179e8e47 150 wacom_wac_queue_flush(hdev, wacom_wac->pen_fifo);
83417206 151 else if (insert)
179e8e47 152 wacom_wac_queue_insert(hdev, wacom_wac->pen_fifo,
073b50bc 153 raw_data, report_size);
83417206
JG		 154
155 return insert && !flush;
156}
157
29b47391
BT		 158static int wacom_raw_event(struct hid_device *hdev, struct hid_report *report,
159 u8 *raw_data, int size)
3bea733a 160{
29b47391 161 struct wacom *wacom = hid_get_drvdata(hdev);
3bea733a 162
29b47391
BT		 163 if (size > WACOM_PKGLEN_MAX)
164 return 1;
3bea733a 165
83417206
JG		 166 if (wacom_wac_pen_serial_enforce(hdev, report, raw_data, size))
167 return -1;
168
29b47391 169 memcpy(wacom->wacom_wac.data, raw_data, size);
3bea733a 170
29b47391
BT		 171 wacom_wac_irq(&wacom->wacom_wac, size);
172
173 return 0;
3bea733a
PC		 174}
175
3bea733a
PC		 176static int wacom_open(struct input_dev *dev)
177{
7791bdae 178 struct wacom *wacom = input_get_drvdata(dev);
29b47391 179
dff67416 180 return hid_hw_open(wacom->hdev);
3bea733a
PC		 181}
182
183static void wacom_close(struct input_dev *dev)
184{
7791bdae 185 struct wacom *wacom = input_get_drvdata(dev);
3bea733a 186
3dad188e
BT		 187 /*
188 * wacom->hdev should never be null, but surprisingly, I had the case
189 * once while unplugging the Wacom Wireless Receiver.
190 */
191 if (wacom->hdev)
192 hid_hw_close(wacom->hdev);
3bea733a
PC		 193}
194
115d5e12 195/*
198fdee2 196 * Calculate the resolution of the X or Y axis using hidinput_calc_abs_res.
115d5e12
JG		 197 */
198static int wacom_calc_hid_res(int logical_extents, int physical_extents,
c669fb2b 199 unsigned unit, int exponent)
115d5e12 200{
198fdee2
BT		 201 struct hid_field field = {
202 .logical_maximum = logical_extents,
203 .physical_maximum = physical_extents,
204 .unit = unit,
205 .unit_exponent = exponent,
206 };
207
208 return hidinput_calc_abs_res(&field, ABS_X);
115d5e12
JG		 209}
210
57832512
JG		 211static void wacom_hid_usage_quirk(struct hid_device *hdev,
212 struct hid_field *field, struct hid_usage *usage)
213{
214 struct wacom *wacom = hid_get_drvdata(hdev);
215 struct wacom_features *features = &wacom->wacom_wac.features;
216 unsigned int equivalent_usage = wacom_equivalent_usage(usage->hid);
217
218 /*
219 * The Dell Canvas 27 needs to be switched to its vendor-defined
220 * report to provide the best resolution.
221 */
222 if (hdev->vendor == USB_VENDOR_ID_WACOM &&
223 hdev->product == 0x4200 &&
224 field->application == HID_UP_MSVENDOR) {
225 wacom->wacom_wac.mode_report = field->report->id;
226 wacom->wacom_wac.mode_value = 2;
227 }
228
229 /*
230 * ISDv4 devices which predate HID's adoption of the
231 * HID_DG_BARELSWITCH2 usage use 0x000D0000 in its
232 * position instead. We can accurately detect if a
233 * usage with that value should be HID_DG_BARRELSWITCH2
234 * based on the surrounding usages, which have remained
235 * constant across generations.
236 */
237 if (features->type == HID_GENERIC &&
238 usage->hid == 0x000D0000 &&
239 field->application == HID_DG_PEN &&
240 field->physical == HID_DG_STYLUS) {
241 int i = usage->usage_index;
242
243 if (i-4 >= 0 && i+1 < field->maxusage &&
244 field->usage[i-4].hid == HID_DG_TIPSWITCH &&
245 field->usage[i-3].hid == HID_DG_BARRELSWITCH &&
246 field->usage[i-2].hid == HID_DG_ERASER &&
247 field->usage[i-1].hid == HID_DG_INVERT &&
248 field->usage[i+1].hid == HID_DG_INRANGE) {
249 usage->hid = HID_DG_BARRELSWITCH2;
250 }
251 }
252
e9fe0d49
JG		 253 /*
254 * Wacom's AES devices use different vendor-defined usages to
255 * report serial number information compared to their branded
256 * hardware. The usages are also sometimes ill-defined and do
257 * not have the correct logical min/max values set. Lets patch
258 * the descriptor to use the branded usage convention and fix
259 * the errors.
260 */
261 if (usage->hid == WACOM_HID_WT_SERIALNUMBER &&
262 field->report_size == 16 &&
263 field->index + 2 < field->report->maxfield) {
264 struct hid_field *a = field->report->field[field->index + 1];
265 struct hid_field *b = field->report->field[field->index + 2];
266
267 if (a->maxusage > 0 &&
268 a->usage[0].hid == HID_DG_TOOLSERIALNUMBER &&
269 a->report_size == 32 &&
270 b->maxusage > 0 &&
271 b->usage[0].hid == 0xFF000000 &&
272 b->report_size == 8) {
273 features->quirks |= WACOM_QUIRK_AESPEN;
274 usage->hid = WACOM_HID_WD_TOOLTYPE;
275 field->logical_minimum = S16_MIN;
276 field->logical_maximum = S16_MAX;
277 a->logical_minimum = S32_MIN;
278 a->logical_maximum = S32_MAX;
279 b->usage[0].hid = WACOM_HID_WD_SERIALHI;
280 b->logical_minimum = 0;
281 b->logical_maximum = U8_MAX;
282 }
283 }
284
57832512
JG		 285 /* 2nd-generation Intuos Pro Large has incorrect Y maximum */
286 if (hdev->vendor == USB_VENDOR_ID_WACOM &&
287 hdev->product == 0x0358 &&
288 WACOM_PEN_FIELD(field) &&
289 equivalent_usage == HID_GD_Y) {
290 field->logical_maximum = 43200;
291 }
292}
293
c669fb2b
BT		 294static void wacom_feature_mapping(struct hid_device *hdev,
295 struct hid_field *field, struct hid_usage *usage)
f393ee2b 296{
c669fb2b
BT		 297 struct wacom *wacom = hid_get_drvdata(hdev);
298 struct wacom_features *features = &wacom->wacom_wac.features;
5ae6e89f 299 struct hid_data *hid_data = &wacom->wacom_wac.hid_data;
ac2423c9 300 unsigned int equivalent_usage = wacom_equivalent_usage(usage->hid);
8ffffd52
BT		 301 u8 *data;
302 int ret;
3064a03b 303 u32 n;
f393ee2b 304
57832512
JG		 305 wacom_hid_usage_quirk(hdev, field, usage);
306
ac2423c9 307 switch (equivalent_usage) {
d8e98060
AAS		 308 case WACOM_HID_WD_TOUCH_RING_SETTING:
309 wacom->generic_has_leds = true;
310 break;
c669fb2b
BT		 311 case HID_DG_CONTACTMAX:
312 /* leave touch_max as is if predefined */
8ffffd52
BT		 313 if (!features->touch_max) {
314 /* read manually */
184eccd4
AAS		 315 n = hid_report_len(field->report);
316 data = hid_alloc_report_buf(field->report, GFP_KERNEL);
8ffffd52
BT		 317 if (!data)
318 break;
319 data[0] = field->report->id;
320 ret = wacom_get_report(hdev, HID_FEATURE_REPORT,
184eccd4 321 data, n, WAC_CMD_RETRIES);
778fbf41 322 if (ret == n && features->type == HID_GENERIC) {
184eccd4
AAS		 323 ret = hid_report_raw_event(hdev,
324 HID_FEATURE_REPORT, data, n, 0);
778fbf41
JG		 325 } else if (ret == 2 && features->type != HID_GENERIC) {
326 features->touch_max = data[1];
05e8fd92
JG		 327 } else {
328 features->touch_max = 16;
329 hid_warn(hdev, "wacom_feature_mapping: "
330 "could not get HID_DG_CONTACTMAX, "
331 "defaulting to %d\n",
332 features->touch_max);
333 }
8ffffd52
BT		 334 kfree(data);
335 }
c669fb2b 336 break;
5ae6e89f
BT		 337 case HID_DG_INPUTMODE:
338 /* Ignore if value index is out of bounds. */
339 if (usage->usage_index >= field->report_count) {
340 dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n");
341 break;
342 }
343
344 hid_data->inputmode = field->report->id;
345 hid_data->inputmode_index = usage->usage_index;
346 break;
326ea2a9
JG		 347
348 case HID_UP_DIGITIZER:
349 if (field->report->id == 0x0B &&
8de82280
JG		 350 (field->application == WACOM_HID_G9_PEN ||
351 field->application == WACOM_HID_G11_PEN)) {
326ea2a9
JG		 352 wacom->wacom_wac.mode_report = field->report->id;
353 wacom->wacom_wac.mode_value = 0;
354 }
355 break;
356
c9c09587
JG		 357 case WACOM_HID_WD_DATAMODE:
358 wacom->wacom_wac.mode_report = field->report->id;
359 wacom->wacom_wac.mode_value = 2;
360 break;
361
8de82280
JG		 362 case WACOM_HID_UP_G9:
363 case WACOM_HID_UP_G11:
326ea2a9 364 if (field->report->id == 0x03 &&
8de82280
JG		 365 (field->application == WACOM_HID_G9_TOUCHSCREEN ||
366 field->application == WACOM_HID_G11_TOUCHSCREEN)) {
326ea2a9
JG		 367 wacom->wacom_wac.mode_report = field->report->id;
368 wacom->wacom_wac.mode_value = 0;
369 }
370 break;
345857bb
JG		 371 case WACOM_HID_WD_OFFSETLEFT:
372 case WACOM_HID_WD_OFFSETTOP:
373 case WACOM_HID_WD_OFFSETRIGHT:
374 case WACOM_HID_WD_OFFSETBOTTOM:
375 /* read manually */
376 n = hid_report_len(field->report);
377 data = hid_alloc_report_buf(field->report, GFP_KERNEL);
378 if (!data)
379 break;
380 data[0] = field->report->id;
381 ret = wacom_get_report(hdev, HID_FEATURE_REPORT,
382 data, n, WAC_CMD_RETRIES);
383 if (ret == n) {
384 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT,
385 data, n, 0);
386 } else {
387 hid_warn(hdev, "%s: could not retrieve sensor offsets\n",
388 __func__);
389 }
390 kfree(data);
391 break;
f393ee2b
PC		 392 }
393}
394
428f8588
CB		 395/*
396 * Interface Descriptor of wacom devices can be incomplete and
397 * inconsistent so wacom_features table is used to store stylus
398 * device's packet lengths, various maximum values, and tablet
399 * resolution based on product ID's.
400 *
401 * For devices that contain 2 interfaces, wacom_features table is
402 * inaccurate for the touch interface. Since the Interface Descriptor
403 * for touch interfaces has pretty complete data, this function exists
404 * to query tablet for this missing information instead of hard coding in
405 * an additional table.
406 *
407 * A typical Interface Descriptor for a stylus will contain a
408 * boot mouse application collection that is not of interest and this
409 * function will ignore it.
410 *
411 * It also contains a digitizer application collection that also is not
412 * of interest since any information it contains would be duplicate
413 * of what is in wacom_features. Usually it defines a report of an array
414 * of bytes that could be used as max length of the stylus packet returned.
415 * If it happens to define a Digitizer-Stylus Physical Collection then
416 * the X and Y logical values contain valid data but it is ignored.
417 *
418 * A typical Interface Descriptor for a touch interface will contain a
419 * Digitizer-Finger Physical Collection which will define both logical
420 * X/Y maximum as well as the physical size of tablet. Since touch
421 * interfaces haven't supported pressure or distance, this is enough
422 * information to override invalid values in the wacom_features table.
4134361a 423 *
c669fb2b
BT		 424 * Intuos5 touch interface and 3rd gen Bamboo Touch do not contain useful
425 * data. We deal with them after returning from this function.
428f8588 426 */
c669fb2b
BT		 427static void wacom_usage_mapping(struct hid_device *hdev,
428 struct hid_field *field, struct hid_usage *usage)
545f4e99 429{
c669fb2b
BT		 430 struct wacom *wacom = hid_get_drvdata(hdev);
431 struct wacom_features *features = &wacom->wacom_wac.features;
d97a5522
BT		 432 bool finger = WACOM_FINGER_FIELD(field);
433 bool pen = WACOM_PEN_FIELD(field);
418b573b 434 unsigned equivalent_usage = wacom_equivalent_usage(usage->hid);
e9fc413f 435
c669fb2b
BT		 436 /*
437 * Requiring Stylus Usage will ignore boot mouse
438 * X/Y values and some cases of invalid Digitizer X/Y
439 * values commonly reported.
440 */
042628ab 441 if (pen)
aa86b18c 442 features->device_type |= WACOM_DEVICETYPE_PEN;
042628ab 443 else if (finger)
aa86b18c 444 features->device_type |= WACOM_DEVICETYPE_TOUCH;
042628ab 445 else
c669fb2b
BT		 446 return;
447
57832512 448 wacom_hid_usage_quirk(hdev, field, usage);
d471b6b2 449
418b573b 450 switch (equivalent_usage) {
c669fb2b
BT		 451 case HID_GD_X:
452 features->x_max = field->logical_maximum;
453 if (finger) {
c669fb2b 454 features->x_phy = field->physical_maximum;
3b164a00
PC		 455 if ((features->type != BAMBOO_PT) &&
456 (features->type != BAMBOO_TOUCH)) {
c669fb2b
BT		 457 features->unit = field->unit;
458 features->unitExpo = field->unit_exponent;
545f4e99 459 }
c669fb2b
BT		 460 }
461 break;
462 case HID_GD_Y:
463 features->y_max = field->logical_maximum;
464 if (finger) {
465 features->y_phy = field->physical_maximum;
3b164a00
PC		 466 if ((features->type != BAMBOO_PT) &&
467 (features->type != BAMBOO_TOUCH)) {
c669fb2b
BT		 468 features->unit = field->unit;
469 features->unitExpo = field->unit_exponent;
470 }
471 }
472 break;
473 case HID_DG_TIPPRESSURE:
474 if (pen)
475 features->pressure_max = field->logical_maximum;
476 break;
477 }
7704ac93
BT		 478
479 if (features->type == HID_GENERIC)
480 wacom_wac_usage_mapping(hdev, field, usage);
c669fb2b 481}
4134361a 482
b58ba1ba
JG		 483static void wacom_post_parse_hid(struct hid_device *hdev,
484 struct wacom_features *features)
485{
486 struct wacom *wacom = hid_get_drvdata(hdev);
487 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
488
489 if (features->type == HID_GENERIC) {
490 /* Any last-minute generic device setup */
4082da80
BT		 491 if (wacom_wac->has_mode_change) {
492 if (wacom_wac->is_direct_mode)
493 features->device_type |= WACOM_DEVICETYPE_DIRECT;
494 else
495 features->device_type &= ~WACOM_DEVICETYPE_DIRECT;
496 }
497
b58ba1ba 498 if (features->touch_max > 1) {
ac2423c9
AAS		 499 if (features->device_type & WACOM_DEVICETYPE_DIRECT)
500 input_mt_init_slots(wacom_wac->touch_input,
501 wacom_wac->features.touch_max,
502 INPUT_MT_DIRECT);
503 else
504 input_mt_init_slots(wacom_wac->touch_input,
505 wacom_wac->features.touch_max,
506 INPUT_MT_POINTER);
b58ba1ba
JG		 507 }
508 }
509}
510
c669fb2b
BT		 511static void wacom_parse_hid(struct hid_device *hdev,
512 struct wacom_features *features)
513{
514 struct hid_report_enum *rep_enum;
515 struct hid_report *hreport;
516 int i, j;
517
518 /* check features first */
519 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT];
520 list_for_each_entry(hreport, &rep_enum->report_list, list) {
521 for (i = 0; i < hreport->maxfield; i++) {
522 /* Ignore if report count is out of bounds. */
523 if (hreport->field[i]->report_count < 1)
524 continue;
525
526 for (j = 0; j < hreport->field[i]->maxusage; j++) {
527 wacom_feature_mapping(hdev, hreport->field[i],
528 hreport->field[i]->usage + j);
4134361a 529 }
545f4e99
PC		 530 }
531 }
532
c669fb2b
BT		 533 /* now check the input usages */
534 rep_enum = &hdev->report_enum[HID_INPUT_REPORT];
535 list_for_each_entry(hreport, &rep_enum->report_list, list) {
536
537 if (!hreport->maxfield)
538 continue;
539
540 for (i = 0; i < hreport->maxfield; i++)
541 for (j = 0; j < hreport->field[i]->maxusage; j++)
542 wacom_usage_mapping(hdev, hreport->field[i],
543 hreport->field[i]->usage + j);
544 }
b58ba1ba
JG		 545
546 wacom_post_parse_hid(hdev, features);
545f4e99
PC		 547}
548
5ae6e89f
BT		 549static int wacom_hid_set_device_mode(struct hid_device *hdev)
550{
551 struct wacom *wacom = hid_get_drvdata(hdev);
552 struct hid_data *hid_data = &wacom->wacom_wac.hid_data;
553 struct hid_report *r;
554 struct hid_report_enum *re;
555
556 if (hid_data->inputmode < 0)
557 return 0;
558
559 re = &(hdev->report_enum[HID_FEATURE_REPORT]);
560 r = re->report_id_hash[hid_data->inputmode];
561 if (r) {
562 r->field[0]->value[hid_data->inputmode_index] = 2;
563 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
564 }
565 return 0;
566}
567
326ea2a9
JG		 568static int wacom_set_device_mode(struct hid_device *hdev,
569 struct wacom_wac *wacom_wac)
3b7307c2 570{
326ea2a9
JG		 571 u8 *rep_data;
572 struct hid_report *r;
573 struct hid_report_enum *re;
3064a03b 574 u32 length;
fe494bc2 575 int error = -ENOMEM, limit = 0;
3b7307c2 576
326ea2a9
JG		 577 if (wacom_wac->mode_report < 0)
578 return 0;
579
580 re = &(hdev->report_enum[HID_FEATURE_REPORT]);
581 r = re->report_id_hash[wacom_wac->mode_report];
582 if (!r)
583 return -EINVAL;
584
585 rep_data = hid_alloc_report_buf(r, GFP_KERNEL);
3b7307c2 586 if (!rep_data)
326ea2a9
JG		 587 return -ENOMEM;
588
589 length = hid_report_len(r);
ec67bbed 590
fe494bc2 591 do {
326ea2a9
JG		 592 rep_data[0] = wacom_wac->mode_report;
593 rep_data[1] = wacom_wac->mode_value;
9937c026 594
296b7378
PF		 595 error = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data,
596 length, 1);
3cb83157 597 if (error >= 0)
27b20a9d 598 error = wacom_get_report(hdev, HID_FEATURE_REPORT,
c64d8834 599 rep_data, length, 1);
326ea2a9
JG		 600 } while (error >= 0 &&
601 rep_data[1] != wacom_wac->mode_report &&
602 limit++ < WAC_MSG_RETRIES);
fe494bc2
JG		 603
604 kfree(rep_data);
605
606 return error < 0 ? error : 0;
607}
608
f81a1295
BT		 609static int wacom_bt_query_tablet_data(struct hid_device *hdev, u8 speed,
610 struct wacom_features *features)
611{
387142bb
BT		 612 struct wacom *wacom = hid_get_drvdata(hdev);
613 int ret;
614 u8 rep_data[2];
615
616 switch (features->type) {
617 case GRAPHIRE_BT:
618 rep_data[0] = 0x03;
619 rep_data[1] = 0x00;
296b7378
PF		 620 ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2,
621 3);
387142bb
BT		 622
623 if (ret >= 0) {
624 rep_data[0] = speed == 0 ? 0x05 : 0x06;
625 rep_data[1] = 0x00;
626
627 ret = wacom_set_report(hdev, HID_FEATURE_REPORT,
296b7378 628 rep_data, 2, 3);
387142bb
BT		 629
630 if (ret >= 0) {
631 wacom->wacom_wac.bt_high_speed = speed;
632 return 0;
633 }
634 }
635
636 /*
637 * Note that if the raw queries fail, it's not a hard failure
638 * and it is safe to continue
639 */
640 hid_warn(hdev, "failed to poke device, command %d, err %d\n",
641 rep_data[0], ret);
642 break;
81af7e61
BT		 643 case INTUOS4WL:
644 if (speed == 1)
645 wacom->wacom_wac.bt_features &= ~0x20;
646 else
647 wacom->wacom_wac.bt_features |= 0x20;
648
649 rep_data[0] = 0x03;
650 rep_data[1] = wacom->wacom_wac.bt_features;
651
296b7378
PF		 652 ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2,
653 1);
81af7e61
BT		 654 if (ret >= 0)
655 wacom->wacom_wac.bt_high_speed = speed;
656 break;
387142bb
BT		 657 }
658
f81a1295
BT		 659 return 0;
660}
661
fe494bc2
JG		 662/*
663 * Switch the tablet into its most-capable mode. Wacom tablets are
664 * typically configured to power-up in a mode which sends mouse-like
665 * reports to the OS. To get absolute position, pressure data, etc.
666 * from the tablet, it is necessary to switch the tablet out of this
667 * mode and into one which sends the full range of tablet data.
668 */
a544c619 669static int _wacom_query_tablet_data(struct wacom *wacom)
fe494bc2 670{
a544c619 671 struct hid_device *hdev = wacom->hdev;
326ea2a9 672 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
a544c619 673 struct wacom_features *features = &wacom_wac->features;
326ea2a9 674
f81a1295
BT		 675 if (hdev->bus == BUS_BLUETOOTH)
676 return wacom_bt_query_tablet_data(hdev, 1, features);
677
326ea2a9
JG		 678 if (features->type != HID_GENERIC) {
679 if (features->device_type & WACOM_DEVICETYPE_TOUCH) {
680 if (features->type > TABLETPC) {
681 /* MT Tablet PC touch */
682 wacom_wac->mode_report = 3;
683 wacom_wac->mode_value = 4;
684 } else if (features->type == WACOM_24HDT) {
685 wacom_wac->mode_report = 18;
686 wacom_wac->mode_value = 2;
687 } else if (features->type == WACOM_27QHDT) {
688 wacom_wac->mode_report = 131;
689 wacom_wac->mode_value = 2;
690 } else if (features->type == BAMBOO_PAD) {
691 wacom_wac->mode_report = 2;
692 wacom_wac->mode_value = 2;
693 }
694 } else if (features->device_type & WACOM_DEVICETYPE_PEN) {
695 if (features->type <= BAMBOO_PT) {
696 wacom_wac->mode_report = 2;
697 wacom_wac->mode_value = 2;
698 }
1963518b 699 }
ec67bbed 700 }
3b7307c2 701
326ea2a9
JG		 702 wacom_set_device_mode(hdev, wacom_wac);
703
704 if (features->type == HID_GENERIC)
705 return wacom_hid_set_device_mode(hdev);
706
fe494bc2 707 return 0;
3b7307c2
DT		 708}
709
c669fb2b 710static void wacom_retrieve_hid_descriptor(struct hid_device *hdev,
1963518b 711 struct wacom_features *features)
ec67bbed 712{
27b20a9d
BT		 713 struct wacom *wacom = hid_get_drvdata(hdev);
714 struct usb_interface *intf = wacom->intf;
ec67bbed 715
fed87e65 716 /* default features */
fed87e65
HR		 717 features->x_fuzz = 4;
718 features->y_fuzz = 4;
719 features->pressure_fuzz = 0;
bef7e200
JG		 720 features->distance_fuzz = 1;
721 features->tilt_fuzz = 1;
ec67bbed 722
d3825d51
CB		 723 /*
724 * The wireless device HID is basic and layout conflicts with
725 * other tablets (monitor and touch interface can look like pen).
726 * Skip the query for this type and modify defaults based on
727 * interface number.
728 */
092e7ddc 729 if (features->type == WIRELESS && intf) {
3f14a63a 730 if (intf->cur_altsetting->desc.bInterfaceNumber == 0)
ccad85cc 731 features->device_type = WACOM_DEVICETYPE_WL_MONITOR;
3f14a63a 732 else
aa86b18c 733 features->device_type = WACOM_DEVICETYPE_NONE;
3f14a63a 734 return;
d3825d51
CB		 735 }
736
c669fb2b 737 wacom_parse_hid(hdev, features);
ec67bbed
PC		 738}
739
4451e088 740struct wacom_hdev_data {
4492efff
PC		 741 struct list_head list;
742 struct kref kref;
4451e088 743 struct hid_device *dev;
4492efff
PC		 744 struct wacom_shared shared;
745};
746
747static LIST_HEAD(wacom_udev_list);
748static DEFINE_MUTEX(wacom_udev_list_lock);
749
4451e088
BT		 750static bool wacom_are_sibling(struct hid_device *hdev,
751 struct hid_device *sibling)
aea2bf6a 752{
4451e088
BT		 753 struct wacom *wacom = hid_get_drvdata(hdev);
754 struct wacom_features *features = &wacom->wacom_wac.features;
41372d5d
JG		 755 struct wacom *sibling_wacom = hid_get_drvdata(sibling);
756 struct wacom_features *sibling_features = &sibling_wacom->wacom_wac.features;
757 __u32 oVid = features->oVid ? features->oVid : hdev->vendor;
758 __u32 oPid = features->oPid ? features->oPid : hdev->product;
4451e088 759
41372d5d
JG		 760 /* The defined oVid/oPid must match that of the sibling */
761 if (features->oVid != HID_ANY_ID && sibling->vendor != oVid)
762 return false;
763 if (features->oPid != HID_ANY_ID && sibling->product != oPid)
764 return false;
765
766 /*
767 * Devices with the same VID/PID must share the same physical
768 * device path, while those with different VID/PID must share
769 * the same physical parent device path.
770 */
771 if (hdev->vendor == sibling->vendor && hdev->product == sibling->product) {
1a8861f1 772 if (!hid_compare_device_paths(hdev, sibling, '/'))
41372d5d
JG		 773 return false;
774 } else {
1a8861f1 775 if (!hid_compare_device_paths(hdev, sibling, '.'))
41372d5d 776 return false;
4451e088 777 }
aea2bf6a 778
41372d5d
JG		 779 /* Skip the remaining heuristics unless you are a HID_GENERIC device */
780 if (features->type != HID_GENERIC)
781 return true;
782
783 /*
784 * Direct-input devices may not be siblings of indirect-input
785 * devices.
786 */
787 if ((features->device_type & WACOM_DEVICETYPE_DIRECT) &&
788 !(sibling_features->device_type & WACOM_DEVICETYPE_DIRECT))
4451e088 789 return false;
aea2bf6a 790
41372d5d
JG		 791 /*
792 * Indirect-input devices may not be siblings of direct-input
793 * devices.
794 */
795 if (!(features->device_type & WACOM_DEVICETYPE_DIRECT) &&
796 (sibling_features->device_type & WACOM_DEVICETYPE_DIRECT))
4451e088 797 return false;
aea2bf6a 798
41372d5d
JG		 799 /* Pen devices may only be siblings of touch devices */
800 if ((features->device_type & WACOM_DEVICETYPE_PEN) &&
801 !(sibling_features->device_type & WACOM_DEVICETYPE_TOUCH))
802 return false;
803
804 /* Touch devices may only be siblings of pen devices */
805 if ((features->device_type & WACOM_DEVICETYPE_TOUCH) &&
806 !(sibling_features->device_type & WACOM_DEVICETYPE_PEN))
807 return false;
808
809 /*
810 * No reason could be found for these two devices to NOT be
811 * siblings, so there's a good chance they ARE siblings
812 */
813 return true;
aea2bf6a
JG		 814}
815
4451e088 816static struct wacom_hdev_data *wacom_get_hdev_data(struct hid_device *hdev)
4492efff 817{
4451e088 818 struct wacom_hdev_data *data;
4492efff 819
41372d5d
JG		 820 /* Try to find an already-probed interface from the same device */
821 list_for_each_entry(data, &wacom_udev_list, list) {
1a8861f1 822 if (hid_compare_device_paths(hdev, data->dev, '/')) {
2a5e597c 823 kref_get(&data->kref);
41372d5d 824 return data;
2a5e597c 825 }
41372d5d
JG		 826 }
827
828 /* Fallback to finding devices that appear to be "siblings" */
4492efff 829 list_for_each_entry(data, &wacom_udev_list, list) {
4451e088 830 if (wacom_are_sibling(hdev, data->dev)) {
4492efff
PC		 831 kref_get(&data->kref);
832 return data;
833 }
834 }
835
836 return NULL;
837}
838
1c817c83
BT		 839static void wacom_release_shared_data(struct kref *kref)
840{
841 struct wacom_hdev_data *data =
842 container_of(kref, struct wacom_hdev_data, kref);
843
844 mutex_lock(&wacom_udev_list_lock);
845 list_del(&data->list);
846 mutex_unlock(&wacom_udev_list_lock);
847
848 kfree(data);
849}
850
851static void wacom_remove_shared_data(void *res)
852{
853 struct wacom *wacom = res;
854 struct wacom_hdev_data *data;
855 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
856
857 if (wacom_wac->shared) {
858 data = container_of(wacom_wac->shared, struct wacom_hdev_data,
859 shared);
860
861 if (wacom_wac->shared->touch == wacom->hdev)
862 wacom_wac->shared->touch = NULL;
863 else if (wacom_wac->shared->pen == wacom->hdev)
864 wacom_wac->shared->pen = NULL;
865
866 kref_put(&data->kref, wacom_release_shared_data);
867 wacom_wac->shared = NULL;
868 }
869}
870
4451e088 871static int wacom_add_shared_data(struct hid_device *hdev)
4492efff 872{
4451e088
BT		 873 struct wacom *wacom = hid_get_drvdata(hdev);
874 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
875 struct wacom_hdev_data *data;
4492efff
PC		 876 int retval = 0;
877
878 mutex_lock(&wacom_udev_list_lock);
879
4451e088 880 data = wacom_get_hdev_data(hdev);
4492efff 881 if (!data) {
4451e088 882 data = kzalloc(sizeof(struct wacom_hdev_data), GFP_KERNEL);
4492efff
PC		 883 if (!data) {
884 retval = -ENOMEM;
885 goto out;
886 }
887
888 kref_init(&data->kref);
4451e088 889 data->dev = hdev;
4492efff
PC		 890 list_add_tail(&data->list, &wacom_udev_list);
891 }
892
4451e088 893 wacom_wac->shared = &data->shared;
4492efff 894
1c817c83
BT		 895 retval = devm_add_action(&hdev->dev, wacom_remove_shared_data, wacom);
896 if (retval) {
897 mutex_unlock(&wacom_udev_list_lock);
898 wacom_remove_shared_data(wacom);
899 return retval;
900 }
901
a9ce7856
JG		 902 if (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH)
903 wacom_wac->shared->touch = hdev;
904 else if (wacom_wac->features.device_type & WACOM_DEVICETYPE_PEN)
905 wacom_wac->shared->pen = hdev;
906
4492efff
PC		 907out:
908 mutex_unlock(&wacom_udev_list_lock);
909 return retval;
910}
911
5d7e7d47
EH		 912static int wacom_led_control(struct wacom *wacom)
913{
914 unsigned char *buf;
9b5b95dd 915 int retval;
912ca216
PC		 916 unsigned char report_id = WAC_CMD_LED_CONTROL;
917 int buf_size = 9;
5d7e7d47 918
a50aac71
BT		 919 if (!wacom->led.groups)
920 return -ENOTSUPP;
921
74aebed6
AAS		 922 if (wacom->wacom_wac.features.type == REMOTE)
923 return -ENOTSUPP;
924
912ca216
PC		 925 if (wacom->wacom_wac.pid) { /* wireless connected */
926 report_id = WAC_CMD_WL_LED_CONTROL;
927 buf_size = 13;
928 }
4922cd26
JG		 929 else if (wacom->wacom_wac.features.type == INTUOSP2_BT) {
930 report_id = WAC_CMD_WL_INTUOSP2;
931 buf_size = 51;
932 }
912ca216 933 buf = kzalloc(buf_size, GFP_KERNEL);
5d7e7d47
EH		 934 if (!buf)
935 return -ENOMEM;
936
10c55cac
AAS		 937 if (wacom->wacom_wac.features.type == HID_GENERIC) {
938 buf[0] = WAC_CMD_LED_CONTROL_GENERIC;
939 buf[1] = wacom->led.llv;
940 buf[2] = wacom->led.groups[0].select & 0x03;
941
942 } else if ((wacom->wacom_wac.features.type >= INTUOS5S &&
943 wacom->wacom_wac.features.type <= INTUOSPL)) {
9b5b95dd
JG		 944 /*
945 * Touch Ring and crop mark LED luminance may take on
946 * one of four values:
947 * 0 = Low; 1 = Medium; 2 = High; 3 = Off
948 */
a50aac71 949 int ring_led = wacom->led.groups[0].select & 0x03;
9b5b95dd
JG		 950 int ring_lum = (((wacom->led.llv & 0x60) >> 5) - 1) & 0x03;
951 int crop_lum = 0;
912ca216
PC		 952 unsigned char led_bits = (crop_lum << 4) | (ring_lum << 2) | (ring_led);
953
954 buf[0] = report_id;
955 if (wacom->wacom_wac.pid) {
956 wacom_get_report(wacom->hdev, HID_FEATURE_REPORT,
957 buf, buf_size, WAC_CMD_RETRIES);
958 buf[0] = report_id;
959 buf[4] = led_bits;
960 } else
961 buf[1] = led_bits;
9b5b95dd 962 }
4922cd26
JG		 963 else if (wacom->wacom_wac.features.type == INTUOSP2_BT) {
964 buf[0] = report_id;
965 buf[4] = 100; // Power Connection LED (ORANGE)
966 buf[5] = 100; // BT Connection LED (BLUE)
967 buf[6] = 100; // Paper Mode (RED?)
968 buf[7] = 100; // Paper Mode (GREEN?)
969 buf[8] = 100; // Paper Mode (BLUE?)
970 buf[9] = wacom->led.llv;
971 buf[10] = wacom->led.groups[0].select & 0x03;
972 }
9b5b95dd 973 else {
a50aac71 974 int led = wacom->led.groups[0].select | 0x4;
9b5b95dd
JG		 975
976 if (wacom->wacom_wac.features.type == WACOM_21UX2 ||
977 wacom->wacom_wac.features.type == WACOM_24HD)
a50aac71 978 led |= (wacom->led.groups[1].select << 4) | 0x40;
9b5b95dd 979
912ca216 980 buf[0] = report_id;
9b5b95dd
JG		 981 buf[1] = led;
982 buf[2] = wacom->led.llv;
983 buf[3] = wacom->led.hlv;
984 buf[4] = wacom->led.img_lum;
985 }
5d7e7d47 986
912ca216 987 retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, buf_size,
296b7378 988 WAC_CMD_RETRIES);
5d7e7d47
EH		 989 kfree(buf);
990
991 return retval;
992}
993
849e2f06
BT		 994static int wacom_led_putimage(struct wacom *wacom, int button_id, u8 xfer_id,
995 const unsigned len, const void *img)
5d7e7d47
EH		 996{
997 unsigned char *buf;
998 int i, retval;
849e2f06 999 const unsigned chunk_len = len / 4; /* 4 chunks are needed to be sent */
5d7e7d47 1000
849e2f06 1001 buf = kzalloc(chunk_len + 3 , GFP_KERNEL);
5d7e7d47
EH		 1002 if (!buf)
1003 return -ENOMEM;
1004
1005 /* Send 'start' command */
1006 buf[0] = WAC_CMD_ICON_START;
1007 buf[1] = 1;
296b7378
PF		 1008 retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
1009 WAC_CMD_RETRIES);
5d7e7d47
EH		 1010 if (retval < 0)
1011 goto out;
1012
849e2f06 1013 buf[0] = xfer_id;
5d7e7d47
EH		 1014 buf[1] = button_id & 0x07;
1015 for (i = 0; i < 4; i++) {
1016 buf[2] = i;
849e2f06 1017 memcpy(buf + 3, img + i * chunk_len, chunk_len);
5d7e7d47 1018
27b20a9d 1019 retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT,
296b7378 1020 buf, chunk_len + 3, WAC_CMD_RETRIES);
5d7e7d47
EH		 1021 if (retval < 0)
1022 break;
1023 }
1024
1025 /* Send 'stop' */
1026 buf[0] = WAC_CMD_ICON_START;
1027 buf[1] = 0;
296b7378
PF		 1028 wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
1029 WAC_CMD_RETRIES);
5d7e7d47
EH		 1030
1031out:
1032 kfree(buf);
1033 return retval;
1034}
1035
09e7d941 1036static ssize_t wacom_led_select_store(struct device *dev, int set_id,
5d7e7d47
EH		 1037 const char *buf, size_t count)
1038{
ee79a8f8 1039 struct hid_device *hdev = to_hid_device(dev);
29b47391 1040 struct wacom *wacom = hid_get_drvdata(hdev);
5d7e7d47
EH		 1041 unsigned int id;
1042 int err;
1043
1044 err = kstrtouint(buf, 10, &id);
1045 if (err)
1046 return err;
1047
1048 mutex_lock(&wacom->lock);
1049
a50aac71 1050 wacom->led.groups[set_id].select = id & 0x3;
5d7e7d47
EH		 1051 err = wacom_led_control(wacom);
1052
1053 mutex_unlock(&wacom->lock);
1054
1055 return err < 0 ? err : count;
1056}
1057
09e7d941
PC		 1058#define DEVICE_LED_SELECT_ATTR(SET_ID) \
1059static ssize_t wacom_led##SET_ID##_select_store(struct device *dev, \
1060 struct device_attribute *attr, const char *buf, size_t count) \
1061{ \
1062 return wacom_led_select_store(dev, SET_ID, buf, count); \
1063} \
04c59abd
PC		 1064static ssize_t wacom_led##SET_ID##_select_show(struct device *dev, \
1065 struct device_attribute *attr, char *buf) \
1066{ \
ee79a8f8 1067 struct hid_device *hdev = to_hid_device(dev);\
29b47391 1068 struct wacom *wacom = hid_get_drvdata(hdev); \
37449adc 1069 return scnprintf(buf, PAGE_SIZE, "%d\n", \
a50aac71 1070 wacom->led.groups[SET_ID].select); \
04c59abd 1071} \
e0984bc3 1072static DEVICE_ATTR(status_led##SET_ID##_select, DEV_ATTR_RW_PERM, \
04c59abd 1073 wacom_led##SET_ID##_select_show, \
09e7d941
PC		 1074 wacom_led##SET_ID##_select_store)
1075
1076DEVICE_LED_SELECT_ATTR(0);
1077DEVICE_LED_SELECT_ATTR(1);
5d7e7d47
EH		 1078
1079static ssize_t wacom_luminance_store(struct wacom *wacom, u8 *dest,
1080 const char *buf, size_t count)
1081{
1082 unsigned int value;
1083 int err;
1084
1085 err = kstrtouint(buf, 10, &value);
1086 if (err)
1087 return err;
1088
1089 mutex_lock(&wacom->lock);
1090
1091 *dest = value & 0x7f;
1092 err = wacom_led_control(wacom);
1093
1094 mutex_unlock(&wacom->lock);
1095
1096 return err < 0 ? err : count;
1097}
1098
1099#define DEVICE_LUMINANCE_ATTR(name, field) \
1100static ssize_t wacom_##name##_luminance_store(struct device *dev, \
1101 struct device_attribute *attr, const char *buf, size_t count) \
1102{ \
ee79a8f8 1103 struct hid_device *hdev = to_hid_device(dev);\
29b47391 1104 struct wacom *wacom = hid_get_drvdata(hdev); \
5d7e7d47
EH		 1105 \
1106 return wacom_luminance_store(wacom, &wacom->led.field, \
1107 buf, count); \
1108} \
37449adc
PC		 1109static ssize_t wacom_##name##_luminance_show(struct device *dev, \
1110 struct device_attribute *attr, char *buf) \
1111{ \
1112 struct wacom *wacom = dev_get_drvdata(dev); \
1113 return scnprintf(buf, PAGE_SIZE, "%d\n", wacom->led.field); \
1114} \
e0984bc3 1115static DEVICE_ATTR(name##_luminance, DEV_ATTR_RW_PERM, \
37449adc
PC		 1116 wacom_##name##_luminance_show, \
1117 wacom_##name##_luminance_store)
5d7e7d47
EH		 1118
1119DEVICE_LUMINANCE_ATTR(status0, llv);
1120DEVICE_LUMINANCE_ATTR(status1, hlv);
1121DEVICE_LUMINANCE_ATTR(buttons, img_lum);
1122
1123static ssize_t wacom_button_image_store(struct device *dev, int button_id,
1124 const char *buf, size_t count)
1125{
ee79a8f8 1126 struct hid_device *hdev = to_hid_device(dev);
29b47391 1127 struct wacom *wacom = hid_get_drvdata(hdev);
5d7e7d47 1128 int err;
849e2f06
BT		 1129 unsigned len;
1130 u8 xfer_id;
1131
1132 if (hdev->bus == BUS_BLUETOOTH) {
1133 len = 256;
1134 xfer_id = WAC_CMD_ICON_BT_XFER;
1135 } else {
1136 len = 1024;
1137 xfer_id = WAC_CMD_ICON_XFER;
1138 }
5d7e7d47 1139
849e2f06 1140 if (count != len)
5d7e7d47
EH		 1141 return -EINVAL;
1142
1143 mutex_lock(&wacom->lock);
1144
849e2f06 1145 err = wacom_led_putimage(wacom, button_id, xfer_id, len, buf);
5d7e7d47
EH		 1146
1147 mutex_unlock(&wacom->lock);
1148
1149 return err < 0 ? err : count;
1150}
1151
1152#define DEVICE_BTNIMG_ATTR(BUTTON_ID) \
1153static ssize_t wacom_btnimg##BUTTON_ID##_store(struct device *dev, \
1154 struct device_attribute *attr, const char *buf, size_t count) \
1155{ \
1156 return wacom_button_image_store(dev, BUTTON_ID, buf, count); \
1157} \
e0984bc3 1158static DEVICE_ATTR(button##BUTTON_ID##_rawimg, DEV_ATTR_WO_PERM, \
5d7e7d47
EH		 1159 NULL, wacom_btnimg##BUTTON_ID##_store)
1160
1161DEVICE_BTNIMG_ATTR(0);
1162DEVICE_BTNIMG_ATTR(1);
1163DEVICE_BTNIMG_ATTR(2);
1164DEVICE_BTNIMG_ATTR(3);
1165DEVICE_BTNIMG_ATTR(4);
1166DEVICE_BTNIMG_ATTR(5);
1167DEVICE_BTNIMG_ATTR(6);
1168DEVICE_BTNIMG_ATTR(7);
1169
09e7d941
PC		 1170static struct attribute *cintiq_led_attrs[] = {
1171 &dev_attr_status_led0_select.attr,
1172 &dev_attr_status_led1_select.attr,
1173 NULL
1174};
1175
2a6a35a9 1176static const struct attribute_group cintiq_led_attr_group = {
09e7d941
PC		 1177 .name = "wacom_led",
1178 .attrs = cintiq_led_attrs,
1179};
1180
1181static struct attribute *intuos4_led_attrs[] = {
5d7e7d47
EH		 1182 &dev_attr_status0_luminance.attr,
1183 &dev_attr_status1_luminance.attr,
09e7d941 1184 &dev_attr_status_led0_select.attr,
5d7e7d47
EH		 1185 &dev_attr_buttons_luminance.attr,
1186 &dev_attr_button0_rawimg.attr,
1187 &dev_attr_button1_rawimg.attr,
1188 &dev_attr_button2_rawimg.attr,
1189 &dev_attr_button3_rawimg.attr,
1190 &dev_attr_button4_rawimg.attr,
1191 &dev_attr_button5_rawimg.attr,
1192 &dev_attr_button6_rawimg.attr,
1193 &dev_attr_button7_rawimg.attr,
1194 NULL
1195};
1196
2a6a35a9 1197static const struct attribute_group intuos4_led_attr_group = {
5d7e7d47 1198 .name = "wacom_led",
09e7d941 1199 .attrs = intuos4_led_attrs,
5d7e7d47
EH		 1200};
1201
9b5b95dd
JG		 1202static struct attribute *intuos5_led_attrs[] = {
1203 &dev_attr_status0_luminance.attr,
1204 &dev_attr_status_led0_select.attr,
1205 NULL
1206};
1207
2a6a35a9 1208static const struct attribute_group intuos5_led_attr_group = {
9b5b95dd
JG		 1209 .name = "wacom_led",
1210 .attrs = intuos5_led_attrs,
1211};
1212
10c55cac
AAS		 1213static struct attribute *generic_led_attrs[] = {
1214 &dev_attr_status0_luminance.attr,
1215 &dev_attr_status_led0_select.attr,
1216 NULL
1217};
1218
2a6a35a9 1219static const struct attribute_group generic_led_attr_group = {
10c55cac
AAS		 1220 .name = "wacom_led",
1221 .attrs = generic_led_attrs,
1222};
1223
2df68a88 1224struct wacom_sysfs_group_devres {
2a6a35a9 1225 const struct attribute_group *group;
2df68a88
BT		 1226 struct kobject *root;
1227};
1228
1229static void wacom_devm_sysfs_group_release(struct device *dev, void *res)
1230{
1231 struct wacom_sysfs_group_devres *devres = res;
1232 struct kobject *kobj = devres->root;
1233
1234 dev_dbg(dev, "%s: dropping reference to %s\n",
1235 __func__, devres->group->name);
1236 sysfs_remove_group(kobj, devres->group);
1237}
1238
f9036bd4
BT		 1239static int __wacom_devm_sysfs_create_group(struct wacom *wacom,
1240 struct kobject *root,
2a6a35a9 1241 const struct attribute_group *group)
2df68a88
BT		 1242{
1243 struct wacom_sysfs_group_devres *devres;
1244 int error;
1245
1246 devres = devres_alloc(wacom_devm_sysfs_group_release,
1247 sizeof(struct wacom_sysfs_group_devres),
1248 GFP_KERNEL);
1249 if (!devres)
1250 return -ENOMEM;
1251
1252 devres->group = group;
f9036bd4 1253 devres->root = root;
2df68a88
BT		 1254
1255 error = sysfs_create_group(devres->root, group);
097b8f62
AY		 1256 if (error) {
1257 devres_free(devres);
2df68a88 1258 return error;
097b8f62 1259 }
2df68a88
BT		 1260
1261 devres_add(&wacom->hdev->dev, devres);
1262
1263 return 0;
1264}
1265
f9036bd4 1266static int wacom_devm_sysfs_create_group(struct wacom *wacom,
2a6a35a9 1267 const struct attribute_group *group)
f9036bd4
BT		 1268{
1269 return __wacom_devm_sysfs_create_group(wacom, &wacom->hdev->dev.kobj,
1270 group);
1271}
1272
37309f47
PC		 1273static void wacom_devm_kfifo_release(struct device *dev, void *res)
1274{
1275 struct kfifo_rec_ptr_2 *devres = res;
1276
1277 kfifo_free(devres);
1278}
1279
1280static int wacom_devm_kfifo_alloc(struct wacom *wacom)
1281{
1282 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
179e8e47 1283 struct kfifo_rec_ptr_2 *pen_fifo;
37309f47
PC		 1284 int error;
1285
1286 pen_fifo = devres_alloc(wacom_devm_kfifo_release,
1287 sizeof(struct kfifo_rec_ptr_2),
1288 GFP_KERNEL);
1289
1290 if (!pen_fifo)
1291 return -ENOMEM;
1292
1293 error = kfifo_alloc(pen_fifo, WACOM_PKGLEN_MAX, GFP_KERNEL);
1294 if (error) {
1295 devres_free(pen_fifo);
1296 return error;
1297 }
1298
1299 devres_add(&wacom->hdev->dev, pen_fifo);
179e8e47 1300 wacom_wac->pen_fifo = pen_fifo;
37309f47
PC		 1301
1302 return 0;
1303}
1304
34736aa9 1305enum led_brightness wacom_leds_brightness_get(struct wacom_led *led)
97f5541f
BT		 1306{
1307 struct wacom *wacom = led->wacom;
1308
1309 if (wacom->led.max_hlv)
1310 return led->hlv * LED_FULL / wacom->led.max_hlv;
1311
1312 if (wacom->led.max_llv)
1313 return led->llv * LED_FULL / wacom->led.max_llv;
1314
1315 /* device doesn't support brightness tuning */
1316 return LED_FULL;
1317}
1318
1319static enum led_brightness __wacom_led_brightness_get(struct led_classdev *cdev)
1320{
1321 struct wacom_led *led = container_of(cdev, struct wacom_led, cdev);
1322 struct wacom *wacom = led->wacom;
1323
1324 if (wacom->led.groups[led->group].select != led->id)
1325 return LED_OFF;
1326
1327 return wacom_leds_brightness_get(led);
1328}
1329
1330static int wacom_led_brightness_set(struct led_classdev *cdev,
1331 enum led_brightness brightness)
1332{
1333 struct wacom_led *led = container_of(cdev, struct wacom_led, cdev);
1334 struct wacom *wacom = led->wacom;
1335 int error;
1336
1337 mutex_lock(&wacom->lock);
1338
1339 if (!wacom->led.groups || (brightness == LED_OFF &&
1340 wacom->led.groups[led->group].select != led->id)) {
1341 error = 0;
1342 goto out;
1343 }
1344
1345 led->llv = wacom->led.llv = wacom->led.max_llv * brightness / LED_FULL;
1346 led->hlv = wacom->led.hlv = wacom->led.max_hlv * brightness / LED_FULL;
1347
1348 wacom->led.groups[led->group].select = led->id;
1349
1350 error = wacom_led_control(wacom);
1351
1352out:
1353 mutex_unlock(&wacom->lock);
1354
1355 return error;
1356}
1357
1358static void wacom_led_readonly_brightness_set(struct led_classdev *cdev,
1359 enum led_brightness brightness)
1360{
1361}
1362
1363static int wacom_led_register_one(struct device *dev, struct wacom *wacom,
1364 struct wacom_led *led, unsigned int group,
1365 unsigned int id, bool read_only)
1366{
1367 int error;
1368 char *name;
1369
1370 name = devm_kasprintf(dev, GFP_KERNEL,
1371 "%s::wacom-%d.%d",
1372 dev_name(dev),
1373 group,
1374 id);
1375 if (!name)
1376 return -ENOMEM;
1377
34736aa9
BT		 1378 if (!read_only) {
1379 led->trigger.name = name;
1380 error = devm_led_trigger_register(dev, &led->trigger);
1381 if (error) {
1382 hid_err(wacom->hdev,
1383 "failed to register LED trigger %s: %d\n",
1384 led->cdev.name, error);
1385 return error;
1386 }
1387 }
1388
97f5541f
BT		 1389 led->group = group;
1390 led->id = id;
1391 led->wacom = wacom;
1392 led->llv = wacom->led.llv;
1393 led->hlv = wacom->led.hlv;
1394 led->cdev.name = name;
1395 led->cdev.max_brightness = LED_FULL;
1396 led->cdev.flags = LED_HW_PLUGGABLE;
1397 led->cdev.brightness_get = __wacom_led_brightness_get;
34736aa9 1398 if (!read_only) {
97f5541f 1399 led->cdev.brightness_set_blocking = wacom_led_brightness_set;
34736aa9
BT		 1400 led->cdev.default_trigger = led->cdev.name;
1401 } else {
97f5541f 1402 led->cdev.brightness_set = wacom_led_readonly_brightness_set;
34736aa9 1403 }
97f5541f
BT		 1404
1405 error = devm_led_classdev_register(dev, &led->cdev);
1406 if (error) {
1407 hid_err(wacom->hdev,
1408 "failed to register LED %s: %d\n",
1409 led->cdev.name, error);
1410 led->cdev.name = NULL;
1411 return error;
1412 }
1413
1414 return 0;
1415}
1416
589e5060
BT		 1417static void wacom_led_groups_release_one(void *data)
1418{
1419 struct wacom_group_leds *group = data;
1420
1421 devres_release_group(group->dev, group);
1422}
1423
97f5541f
BT		 1424static int wacom_led_groups_alloc_and_register_one(struct device *dev,
1425 struct wacom *wacom,
1426 int group_id, int count,
1427 bool read_only)
1428{
1429 struct wacom_led *leds;
1430 int i, error;
1431
1432 if (group_id >= wacom->led.count || count <= 0)
1433 return -EINVAL;
1434
1435 if (!devres_open_group(dev, &wacom->led.groups[group_id], GFP_KERNEL))
1436 return -ENOMEM;
1437
a86854d0 1438 leds = devm_kcalloc(dev, count, sizeof(struct wacom_led), GFP_KERNEL);
97f5541f
BT		 1439 if (!leds) {
1440 error = -ENOMEM;
1441 goto err;
1442 }
1443
1444 wacom->led.groups[group_id].leds = leds;
1445 wacom->led.groups[group_id].count = count;
1446
1447 for (i = 0; i < count; i++) {
1448 error = wacom_led_register_one(dev, wacom, &leds[i],
1449 group_id, i, read_only);
1450 if (error)
1451 goto err;
1452 }
1453
589e5060
BT		 1454 wacom->led.groups[group_id].dev = dev;
1455
1456 devres_close_group(dev, &wacom->led.groups[group_id]);
1457
1458 /*
1459 * There is a bug (?) in devm_led_classdev_register() in which its
1460 * increments the refcount of the parent. If the parent is an input
1461 * device, that means the ref count never reaches 0 when
1462 * devm_input_device_release() gets called.
1463 * This means that the LEDs are still there after disconnect.
1464 * Manually force the release of the group so that the leds are released
1465 * once we are done using them.
1466 */
1467 error = devm_add_action_or_reset(&wacom->hdev->dev,
1468 wacom_led_groups_release_one,
1469 &wacom->led.groups[group_id]);
1470 if (error)
1471 return error;
1472
97f5541f
BT		 1473 return 0;
1474
1475err:
1476 devres_release_group(dev, &wacom->led.groups[group_id]);
1477 return error;
1478}
1479
34736aa9
BT		 1480struct wacom_led *wacom_led_find(struct wacom *wacom, unsigned int group_id,
1481 unsigned int id)
1482{
1483 struct wacom_group_leds *group;
1484
1485 if (group_id >= wacom->led.count)
1486 return NULL;
1487
1488 group = &wacom->led.groups[group_id];
1489
1490 if (!group->leds)
1491 return NULL;
1492
1493 id %= group->count;
1494
1495 return &group->leds[id];
1496}
1497
1784cd57 1498/*
34736aa9
BT		 1499 * wacom_led_next: gives the next available led with a wacom trigger.
1500 *
1501 * returns the next available struct wacom_led which has its default trigger
1502 * or the current one if none is available.
1503 */
1504struct wacom_led *wacom_led_next(struct wacom *wacom, struct wacom_led *cur)
1505{
1506 struct wacom_led *next_led;
1507 int group, next;
1508
1509 if (!wacom || !cur)
1510 return NULL;
1511
1512 group = cur->group;
1513 next = cur->id;
1514
1515 do {
1516 next_led = wacom_led_find(wacom, group, ++next);
1517 if (!next_led || next_led == cur)
1518 return next_led;
1519 } while (next_led->cdev.trigger != &next_led->trigger);
1520
1521 return next_led;
1522}
1523
a50aac71
BT		 1524static void wacom_led_groups_release(void *data)
1525{
1526 struct wacom *wacom = data;
1527
1528 wacom->led.groups = NULL;
97f5541f 1529 wacom->led.count = 0;
a50aac71
BT		 1530}
1531
1532static int wacom_led_groups_allocate(struct wacom *wacom, int count)
1533{
97f5541f 1534 struct device *dev = &wacom->hdev->dev;
a50aac71
BT		 1535 struct wacom_group_leds *groups;
1536 int error;
1537
a86854d0 1538 groups = devm_kcalloc(dev, count, sizeof(struct wacom_group_leds),
a50aac71
BT		 1539 GFP_KERNEL);
1540 if (!groups)
1541 return -ENOMEM;
1542
97f5541f 1543 error = devm_add_action_or_reset(dev, wacom_led_groups_release, wacom);
a50aac71
BT		 1544 if (error)
1545 return error;
1546
1547 wacom->led.groups = groups;
97f5541f
BT		 1548 wacom->led.count = count;
1549
1550 return 0;
1551}
1552
1553static int wacom_leds_alloc_and_register(struct wacom *wacom, int group_count,
1554 int led_per_group, bool read_only)
1555{
1556 struct device *dev;
1557 int i, error;
1558
1559 if (!wacom->wacom_wac.pad_input)
1560 return -EINVAL;
1561
1562 dev = &wacom->wacom_wac.pad_input->dev;
1563
1564 error = wacom_led_groups_allocate(wacom, group_count);
1565 if (error)
1566 return error;
1567
1568 for (i = 0; i < group_count; i++) {
1569 error = wacom_led_groups_alloc_and_register_one(dev, wacom, i,
1570 led_per_group,
1571 read_only);
1572 if (error)
1573 return error;
1574 }
a50aac71
BT		 1575
1576 return 0;
1577}
1578
10c55cac 1579int wacom_initialize_leds(struct wacom *wacom)
5d7e7d47
EH		 1580{
1581 int error;
1582
862cf553
JG		 1583 if (!(wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD))
1584 return 0;
1585
09e7d941
PC		 1586 /* Initialize default values */
1587 switch (wacom->wacom_wac.features.type) {
10c55cac
AAS		 1588 case HID_GENERIC:
1589 if (!wacom->generic_has_leds)
1590 return 0;
1591 wacom->led.llv = 100;
1592 wacom->led.max_llv = 100;
1593
1594 error = wacom_leds_alloc_and_register(wacom, 1, 4, false);
1595 if (error) {
1596 hid_err(wacom->hdev,
1597 "cannot create leds err: %d\n", error);
1598 return error;
1599 }
1600
1601 error = wacom_devm_sysfs_create_group(wacom,
1602 &generic_led_attr_group);
1603 break;
1604
a19fc986 1605 case INTUOS4S:
09e7d941 1606 case INTUOS4:
81af7e61 1607 case INTUOS4WL:
09e7d941 1608 case INTUOS4L:
f4fa9a6d 1609 wacom->led.llv = 10;
5d7e7d47 1610 wacom->led.hlv = 20;
97f5541f
BT		 1611 wacom->led.max_llv = 127;
1612 wacom->led.max_hlv = 127;
5d7e7d47 1613 wacom->led.img_lum = 10;
a50aac71 1614
97f5541f 1615 error = wacom_leds_alloc_and_register(wacom, 1, 4, false);
a50aac71
BT		 1616 if (error) {
1617 hid_err(wacom->hdev,
1618 "cannot create leds err: %d\n", error);
1619 return error;
1620 }
1621
2df68a88
BT		 1622 error = wacom_devm_sysfs_create_group(wacom,
1623 &intuos4_led_attr_group);
09e7d941
PC		 1624 break;
1625
246835fc 1626 case WACOM_24HD:
09e7d941 1627 case WACOM_21UX2:
09e7d941
PC		 1628 wacom->led.llv = 0;
1629 wacom->led.hlv = 0;
1630 wacom->led.img_lum = 0;
5d7e7d47 1631
97f5541f 1632 error = wacom_leds_alloc_and_register(wacom, 2, 4, false);
a50aac71
BT		 1633 if (error) {
1634 hid_err(wacom->hdev,
1635 "cannot create leds err: %d\n", error);
1636 return error;
1637 }
1638
2df68a88
BT		 1639 error = wacom_devm_sysfs_create_group(wacom,
1640 &cintiq_led_attr_group);
09e7d941
PC		 1641 break;
1642
9b5b95dd
JG		 1643 case INTUOS5S:
1644 case INTUOS5:
1645 case INTUOS5L:
9a35c411
PC		 1646 case INTUOSPS:
1647 case INTUOSPM:
1648 case INTUOSPL:
862cf553 1649 wacom->led.llv = 32;
97f5541f 1650 wacom->led.max_llv = 96;
862cf553 1651
97f5541f 1652 error = wacom_leds_alloc_and_register(wacom, 1, 4, false);
a50aac71
BT		 1653 if (error) {
1654 hid_err(wacom->hdev,
1655 "cannot create leds err: %d\n", error);
1656 return error;
1657 }
1658
2df68a88
BT		 1659 error = wacom_devm_sysfs_create_group(wacom,
1660 &intuos5_led_attr_group);
9b5b95dd
JG		 1661 break;
1662
4922cd26
JG		 1663 case INTUOSP2_BT:
1664 wacom->led.llv = 50;
1665 wacom->led.max_llv = 100;
1666 error = wacom_leds_alloc_and_register(wacom, 1, 4, false);
1667 if (error) {
1668 hid_err(wacom->hdev,
1669 "cannot create leds err: %d\n", error);
1670 return error;
1671 }
1672 return 0;
1673
a50aac71 1674 case REMOTE:
97f5541f
BT		 1675 wacom->led.llv = 255;
1676 wacom->led.max_llv = 255;
a50aac71
BT		 1677 error = wacom_led_groups_allocate(wacom, 5);
1678 if (error) {
1679 hid_err(wacom->hdev,
1680 "cannot create leds err: %d\n", error);
1681 return error;
1682 }
1683 return 0;
1684
09e7d941
PC		 1685 default:
1686 return 0;
5d7e7d47
EH		 1687 }
1688
09e7d941 1689 if (error) {
c31a408f 1690 hid_err(wacom->hdev,
09e7d941
PC		 1691 "cannot create sysfs group err: %d\n", error);
1692 return error;
1693 }
09e7d941 1694
5d7e7d47
EH		 1695 return 0;
1696}
1697
a544c619
BT		 1698static void wacom_init_work(struct work_struct *work)
1699{
1700 struct wacom *wacom = container_of(work, struct wacom, init_work.work);
1701
1702 _wacom_query_tablet_data(wacom);
1703 wacom_led_control(wacom);
1704}
1705
1706static void wacom_query_tablet_data(struct wacom *wacom)
1707{
1708 schedule_delayed_work(&wacom->init_work, msecs_to_jiffies(1000));
1709}
1710
a1d552cc 1711static enum power_supply_property wacom_battery_props[] = {
9956953e 1712 POWER_SUPPLY_PROP_MODEL_NAME,
71fa641e 1713 POWER_SUPPLY_PROP_PRESENT,
ac8d1010 1714 POWER_SUPPLY_PROP_STATUS,
6e2a6e80 1715 POWER_SUPPLY_PROP_SCOPE,
a1d552cc
CB		 1716 POWER_SUPPLY_PROP_CAPACITY
1717};
1718
1719static int wacom_battery_get_property(struct power_supply *psy,
1720 enum power_supply_property psp,
1721 union power_supply_propval *val)
1722{
59d69bc8 1723 struct wacom_battery *battery = power_supply_get_drvdata(psy);
a1d552cc
CB		 1724 int ret = 0;
1725
1726 switch (psp) {
9956953e
BT		 1727 case POWER_SUPPLY_PROP_MODEL_NAME:
1728 val->strval = battery->wacom->wacom_wac.name;
1729 break;
71fa641e 1730 case POWER_SUPPLY_PROP_PRESENT:
59d69bc8 1731 val->intval = battery->bat_connected;
71fa641e 1732 break;
6e2a6e80
BN		 1733 case POWER_SUPPLY_PROP_SCOPE:
1734 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
1735 break;
a1d552cc 1736 case POWER_SUPPLY_PROP_CAPACITY:
59d69bc8 1737 val->intval = battery->battery_capacity;
ac8d1010
BT		 1738 break;
1739 case POWER_SUPPLY_PROP_STATUS:
16e45989
JG		 1740 if (battery->bat_status != WACOM_POWER_SUPPLY_STATUS_AUTO)
1741 val->intval = battery->bat_status;
1742 else if (battery->bat_charging)
ac8d1010 1743 val->intval = POWER_SUPPLY_STATUS_CHARGING;
59d69bc8
BT		 1744 else if (battery->battery_capacity == 100 &&
1745 battery->ps_connected)
ac8d1010 1746 val->intval = POWER_SUPPLY_STATUS_FULL;
59d69bc8 1747 else if (battery->ps_connected)
b0882cb7 1748 val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
ac8d1010
BT		 1749 else
1750 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
a1d552cc
CB		 1751 break;
1752 default:
1753 ret = -EINVAL;
1754 break;
1755 }
1756
1757 return ret;
1758}
1759
59d69bc8
BT		 1760static int __wacom_initialize_battery(struct wacom *wacom,
1761 struct wacom_battery *battery)
a1d552cc 1762{
d70420b9 1763 static atomic_t battery_no = ATOMIC_INIT(0);
b189da90 1764 struct device *dev = &wacom->hdev->dev;
59d69bc8 1765 struct power_supply_config psy_cfg = { .drv_data = battery, };
136ae5e9 1766 struct power_supply *ps_bat;
59d69bc8 1767 struct power_supply_desc *bat_desc = &battery->bat_desc;
d70420b9 1768 unsigned long n;
b189da90
BT		 1769 int error;
1770
1771 if (!devres_open_group(dev, bat_desc, GFP_KERNEL))
1772 return -ENOMEM;
a1d552cc 1773
9956953e
BT		 1774 battery->wacom = wacom;
1775
59d69bc8
BT		 1776 n = atomic_inc_return(&battery_no) - 1;
1777
1778 bat_desc->properties = wacom_battery_props;
1779 bat_desc->num_properties = ARRAY_SIZE(wacom_battery_props);
1780 bat_desc->get_property = wacom_battery_get_property;
1781 sprintf(battery->bat_name, "wacom_battery_%ld", n);
1782 bat_desc->name = battery->bat_name;
96983296 1783 bat_desc->type = POWER_SUPPLY_TYPE_USB;
59d69bc8
BT		 1784 bat_desc->use_for_apm = 0;
1785
59d69bc8
BT		 1786 ps_bat = devm_power_supply_register(dev, bat_desc, &psy_cfg);
1787 if (IS_ERR(ps_bat)) {
1788 error = PTR_ERR(ps_bat);
1789 goto err;
1790 }
297d716f 1791
59d69bc8 1792 power_supply_powers(ps_bat, &wacom->hdev->dev);
7dbd229e 1793
59d69bc8 1794 battery->battery = ps_bat;
a1d552cc 1795
b189da90 1796 devres_close_group(dev, bat_desc);
7dbd229e 1797 return 0;
b189da90
BT		 1798
1799err:
1800 devres_release_group(dev, bat_desc);
1801 return error;
a1d552cc
CB		 1802}
1803
59d69bc8
BT		 1804static int wacom_initialize_battery(struct wacom *wacom)
1805{
1806 if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY)
1807 return __wacom_initialize_battery(wacom, &wacom->battery);
1808
1809 return 0;
1810}
1811
a1d552cc
CB		 1812static void wacom_destroy_battery(struct wacom *wacom)
1813{
59d69bc8
BT		 1814 if (wacom->battery.battery) {
1815 devres_release_group(&wacom->hdev->dev,
1816 &wacom->battery.bat_desc);
1817 wacom->battery.battery = NULL;
b7af2bb8 1818 }
a1d552cc
CB		 1819}
1820
f81a1295
BT		 1821static ssize_t wacom_show_speed(struct device *dev,
1822 struct device_attribute
1823 *attr, char *buf)
1824{
ee79a8f8 1825 struct hid_device *hdev = to_hid_device(dev);
f81a1295
BT		 1826 struct wacom *wacom = hid_get_drvdata(hdev);
1827
d8833124 1828 return sysfs_emit(buf, "%i\n", wacom->wacom_wac.bt_high_speed);
f81a1295
BT		 1829}
1830
1831static ssize_t wacom_store_speed(struct device *dev,
1832 struct device_attribute *attr,
1833 const char *buf, size_t count)
1834{
ee79a8f8 1835 struct hid_device *hdev = to_hid_device(dev);
f81a1295
BT		 1836 struct wacom *wacom = hid_get_drvdata(hdev);
1837 u8 new_speed;
1838
1839 if (kstrtou8(buf, 0, &new_speed))
1840 return -EINVAL;
1841
1842 if (new_speed != 0 && new_speed != 1)
1843 return -EINVAL;
1844
1845 wacom_bt_query_tablet_data(hdev, new_speed, &wacom->wacom_wac.features);
1846
1847 return count;
1848}
1849
e0984bc3 1850static DEVICE_ATTR(speed, DEV_ATTR_RW_PERM,
f81a1295
BT		 1851 wacom_show_speed, wacom_store_speed);
1852
72b236d6
AS		 1853
1854static ssize_t wacom_show_remote_mode(struct kobject *kobj,
1855 struct kobj_attribute *kattr,
1856 char *buf, int index)
1857{
2cf83833 1858 struct device *dev = kobj_to_dev(kobj->parent);
ee79a8f8 1859 struct hid_device *hdev = to_hid_device(dev);
72b236d6
AS		 1860 struct wacom *wacom = hid_get_drvdata(hdev);
1861 u8 mode;
1862
a50aac71 1863 mode = wacom->led.groups[index].select;
bc35f73a 1864 return sprintf(buf, "%d\n", mode < 3 ? mode : -1);
72b236d6
AS		 1865}
1866
1867#define DEVICE_EKR_ATTR_GROUP(SET_ID) \
1868static ssize_t wacom_show_remote##SET_ID##_mode(struct kobject *kobj, \
1869 struct kobj_attribute *kattr, char *buf) \
1870{ \
1871 return wacom_show_remote_mode(kobj, kattr, buf, SET_ID); \
1872} \
1873static struct kobj_attribute remote##SET_ID##_mode_attr = { \
1874 .attr = {.name = "remote_mode", \
1875 .mode = DEV_ATTR_RO_PERM}, \
1876 .show = wacom_show_remote##SET_ID##_mode, \
1877}; \
1878static struct attribute *remote##SET_ID##_serial_attrs[] = { \
1879 &remote##SET_ID##_mode_attr.attr, \
1880 NULL \
1881}; \
2a6a35a9 1882static const struct attribute_group remote##SET_ID##_serial_group = { \
72b236d6
AS		 1883 .name = NULL, \
1884 .attrs = remote##SET_ID##_serial_attrs, \
1885}
1886
1887DEVICE_EKR_ATTR_GROUP(0);
1888DEVICE_EKR_ATTR_GROUP(1);
1889DEVICE_EKR_ATTR_GROUP(2);
1890DEVICE_EKR_ATTR_GROUP(3);
1891DEVICE_EKR_ATTR_GROUP(4);
1892
e6f2813a
BT		 1893static int wacom_remote_create_attr_group(struct wacom *wacom, __u32 serial,
1894 int index)
72b236d6
AS		 1895{
1896 int error = 0;
83e6b40e 1897 struct wacom_remote *remote = wacom->remote;
72b236d6 1898
e7749f6e 1899 remote->remotes[index].group.name = devm_kasprintf(&wacom->hdev->dev,
83e6b40e
BT		 1900 GFP_KERNEL,
1901 "%d", serial);
e7749f6e 1902 if (!remote->remotes[index].group.name)
72b236d6 1903 return -ENOMEM;
72b236d6 1904
f9036bd4 1905 error = __wacom_devm_sysfs_create_group(wacom, remote->remote_dir,
e7749f6e 1906 &remote->remotes[index].group);
72b236d6 1907 if (error) {
e7749f6e 1908 remote->remotes[index].group.name = NULL;
72b236d6
AS		 1909 hid_err(wacom->hdev,
1910 "cannot create sysfs group err: %d\n", error);
72b236d6
AS		 1911 return error;
1912 }
1913
1914 return 0;
1915}
1916
72b236d6
AS		 1917static int wacom_cmd_unpair_remote(struct wacom *wacom, unsigned char selector)
1918{
1919 const size_t buf_size = 2;
1920 unsigned char *buf;
1921 int retval;
1922
1923 buf = kzalloc(buf_size, GFP_KERNEL);
1924 if (!buf)
1925 return -ENOMEM;
1926
1927 buf[0] = WAC_CMD_DELETE_PAIRING;
1928 buf[1] = selector;
1929
1930 retval = wacom_set_report(wacom->hdev, HID_OUTPUT_REPORT, buf,
1931 buf_size, WAC_CMD_RETRIES);
1932 kfree(buf);
1933
1934 return retval;
1935}
1936
1937static ssize_t wacom_store_unpair_remote(struct kobject *kobj,
1938 struct kobj_attribute *attr,
1939 const char *buf, size_t count)
1940{
1941 unsigned char selector = 0;
2cf83833 1942 struct device *dev = kobj_to_dev(kobj->parent);
ee79a8f8 1943 struct hid_device *hdev = to_hid_device(dev);
72b236d6
AS		 1944 struct wacom *wacom = hid_get_drvdata(hdev);
1945 int err;
1946
1947 if (!strncmp(buf, "*\n", 2)) {
1948 selector = WAC_CMD_UNPAIR_ALL;
1949 } else {
1950 hid_info(wacom->hdev, "remote: unrecognized unpair code: %s\n",
1951 buf);
1952 return -1;
1953 }
1954
1955 mutex_lock(&wacom->lock);
1956
1957 err = wacom_cmd_unpair_remote(wacom, selector);
1958 mutex_unlock(&wacom->lock);
1959
1960 return err < 0 ? err : count;
1961}
1962
1963static struct kobj_attribute unpair_remote_attr = {
1964 .attr = {.name = "unpair_remote", .mode = 0200},
1965 .store = wacom_store_unpair_remote,
1966};
1967
1968static const struct attribute *remote_unpair_attrs[] = {
1969 &unpair_remote_attr.attr,
1970 NULL
1971};
1972
83e6b40e
BT		 1973static void wacom_remotes_destroy(void *data)
1974{
1975 struct wacom *wacom = data;
1976 struct wacom_remote *remote = wacom->remote;
1977
1978 if (!remote)
1979 return;
1980
1981 kobject_put(remote->remote_dir);
1982 kfifo_free(&remote->remote_fifo);
1983 wacom->remote = NULL;
1984}
1985
1986static int wacom_initialize_remotes(struct wacom *wacom)
72b236d6
AS		 1987{
1988 int error = 0;
83e6b40e 1989 struct wacom_remote *remote;
72b236d6
AS		 1990 int i;
1991
1992 if (wacom->wacom_wac.features.type != REMOTE)
1993 return 0;
1994
83e6b40e
BT		 1995 remote = devm_kzalloc(&wacom->hdev->dev, sizeof(*wacom->remote),
1996 GFP_KERNEL);
1997 if (!remote)
1998 return -ENOMEM;
72b236d6 1999
83e6b40e
BT		 2000 wacom->remote = remote;
2001
2002 spin_lock_init(&remote->remote_lock);
2003
2004 error = kfifo_alloc(&remote->remote_fifo,
2005 5 * sizeof(struct wacom_remote_data),
2006 GFP_KERNEL);
2007 if (error) {
2008 hid_err(wacom->hdev, "failed allocating remote_fifo\n");
72b236d6 2009 return -ENOMEM;
83e6b40e 2010 }
72b236d6 2011
e7749f6e
BT		 2012 remote->remotes[0].group = remote0_serial_group;
2013 remote->remotes[1].group = remote1_serial_group;
2014 remote->remotes[2].group = remote2_serial_group;
2015 remote->remotes[3].group = remote3_serial_group;
2016 remote->remotes[4].group = remote4_serial_group;
83e6b40e
BT		 2017
2018 remote->remote_dir = kobject_create_and_add("wacom_remote",
2019 &wacom->hdev->dev.kobj);
2020 if (!remote->remote_dir)
2021 return -ENOMEM;
2022
2023 error = sysfs_create_files(remote->remote_dir, remote_unpair_attrs);
72b236d6
AS		 2024
2025 if (error) {
2026 hid_err(wacom->hdev,
2027 "cannot create sysfs group err: %d\n", error);
2028 return error;
2029 }
2030
2031 for (i = 0; i < WACOM_MAX_REMOTES; i++) {
a50aac71 2032 wacom->led.groups[i].select = WACOM_STATUS_UNKNOWN;
e7749f6e 2033 remote->remotes[i].serial = 0;
72b236d6
AS		 2034 }
2035
83e6b40e
BT		 2036 error = devm_add_action_or_reset(&wacom->hdev->dev,
2037 wacom_remotes_destroy, wacom);
2038 if (error)
2039 return error;
2040
72b236d6
AS		 2041 return 0;
2042}
2043
d2d13f18 2044static struct input_dev *wacom_allocate_input(struct wacom *wacom)
3aac0ef1
CB		 2045{
2046 struct input_dev *input_dev;
b6c79f2c 2047 struct hid_device *hdev = wacom->hdev;
3aac0ef1 2048 struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
3aac0ef1 2049
3dad188e 2050 input_dev = devm_input_allocate_device(&hdev->dev);
d2d13f18
BT		 2051 if (!input_dev)
2052 return NULL;
3aac0ef1 2053
2bdd163c 2054 input_dev->name = wacom_wac->features.name;
b6c79f2c
BT		 2055 input_dev->phys = hdev->phys;
2056 input_dev->dev.parent = &hdev->dev;
3aac0ef1
CB		 2057 input_dev->open = wacom_open;
2058 input_dev->close = wacom_close;
b6c79f2c
BT		 2059 input_dev->uniq = hdev->uniq;
2060 input_dev->id.bustype = hdev->bus;
2061 input_dev->id.vendor = hdev->vendor;
12969e3b 2062 input_dev->id.product = wacom_wac->pid ? wacom_wac->pid : hdev->product;
b6c79f2c 2063 input_dev->id.version = hdev->version;
3aac0ef1
CB		 2064 input_set_drvdata(input_dev, wacom);
2065
d2d13f18
BT		 2066 return input_dev;
2067}
2068
d9f2d203
JG		 2069static int wacom_allocate_inputs(struct wacom *wacom)
2070{
2071 struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
2072
2073 wacom_wac->pen_input = wacom_allocate_input(wacom);
2074 wacom_wac->touch_input = wacom_allocate_input(wacom);
2075 wacom_wac->pad_input = wacom_allocate_input(wacom);
3dad188e
BT		 2076 if (!wacom_wac->pen_input ||
2077 !wacom_wac->touch_input ||
2078 !wacom_wac->pad_input)
d9f2d203 2079 return -ENOMEM;
d9f2d203 2080
2bdd163c 2081 wacom_wac->pen_input->name = wacom_wac->pen_name;
d9f2d203
JG		 2082 wacom_wac->touch_input->name = wacom_wac->touch_name;
2083 wacom_wac->pad_input->name = wacom_wac->pad_name;
2084
2085 return 0;
2086}
2087
2546dacd
BT		 2088static int wacom_register_inputs(struct wacom *wacom)
2089{
2a6cdbdd 2090 struct input_dev *pen_input_dev, *touch_input_dev, *pad_input_dev;
2546dacd 2091 struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
2636a3f2 2092 int error = 0;
2546dacd 2093
2a6cdbdd
JG		 2094 pen_input_dev = wacom_wac->pen_input;
2095 touch_input_dev = wacom_wac->touch_input;
2546dacd
BT		 2096 pad_input_dev = wacom_wac->pad_input;
2097
2a6cdbdd 2098 if (!pen_input_dev || !touch_input_dev || !pad_input_dev)
2546dacd
BT		 2099 return -EINVAL;
2100
2a6cdbdd
JG		 2101 error = wacom_setup_pen_input_capabilities(pen_input_dev, wacom_wac);
2102 if (error) {
2103 /* no pen in use on this interface */
2104 input_free_device(pen_input_dev);
2105 wacom_wac->pen_input = NULL;
2106 pen_input_dev = NULL;
2107 } else {
2108 error = input_register_device(pen_input_dev);
2109 if (error)
3dad188e 2110 goto fail;
2a6cdbdd
JG		 2111 }
2112
2113 error = wacom_setup_touch_input_capabilities(touch_input_dev, wacom_wac);
2114 if (error) {
2115 /* no touch in use on this interface */
2116 input_free_device(touch_input_dev);
2117 wacom_wac->touch_input = NULL;
2118 touch_input_dev = NULL;
2119 } else {
2120 error = input_register_device(touch_input_dev);
30ebc1ae 2121 if (error)
3dad188e 2122 goto fail;
30ebc1ae 2123 }
1963518b 2124
d2d13f18
BT		 2125 error = wacom_setup_pad_input_capabilities(pad_input_dev, wacom_wac);
2126 if (error) {
2127 /* no pad in use on this interface */
2128 input_free_device(pad_input_dev);
2129 wacom_wac->pad_input = NULL;
2130 pad_input_dev = NULL;
2131 } else {
2132 error = input_register_device(pad_input_dev);
2133 if (error)
3dad188e 2134 goto fail;
d2d13f18
BT		 2135 }
2136
1963518b 2137 return 0;
3aac0ef1 2138
3dad188e
BT		 2139fail:
2140 wacom_wac->pad_input = NULL;
2a6cdbdd 2141 wacom_wac->touch_input = NULL;
2a6cdbdd 2142 wacom_wac->pen_input = NULL;
3aac0ef1
CB		 2143 return error;
2144}
2145
0be01712
JG		 2146/*
2147 * Not all devices report physical dimensions from HID.
2148 * Compute the default from hardcoded logical dimension
2149 * and resolution before driver overwrites them.
2150 */
2151static void wacom_set_default_phy(struct wacom_features *features)
2152{
2153 if (features->x_resolution) {
2154 features->x_phy = (features->x_max * 100) /
2155 features->x_resolution;
2156 features->y_phy = (features->y_max * 100) /
2157 features->y_resolution;
2158 }
2159}
2160
2161static void wacom_calculate_res(struct wacom_features *features)
2162{
2163 /* set unit to "100th of a mm" for devices not reported by HID */
2164 if (!features->unit) {
2165 features->unit = 0x11;
2166 features->unitExpo = -3;
2167 }
2168
2169 features->x_resolution = wacom_calc_hid_res(features->x_max,
2170 features->x_phy,
2171 features->unit,
2172 features->unitExpo);
2173 features->y_resolution = wacom_calc_hid_res(features->y_max,
2174 features->y_phy,
2175 features->unit,
2176 features->unitExpo);
2177}
2178
fce9957d
JG		 2179void wacom_battery_work(struct work_struct *work)
2180{
d17d1f17 2181 struct wacom *wacom = container_of(work, struct wacom, battery_work);
fce9957d
JG		 2182
2183 if ((wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&
59d69bc8 2184 !wacom->battery.battery) {
fce9957d
JG		 2185 wacom_initialize_battery(wacom);
2186 }
2187 else if (!(wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&
59d69bc8 2188 wacom->battery.battery) {
fce9957d
JG		 2189 wacom_destroy_battery(wacom);
2190 }
2191}
2192
01c846f9
BT		 2193static size_t wacom_compute_pktlen(struct hid_device *hdev)
2194{
2195 struct hid_report_enum *report_enum;
2196 struct hid_report *report;
2197 size_t size = 0;
2198
2199 report_enum = hdev->report_enum + HID_INPUT_REPORT;
2200
2201 list_for_each_entry(report, &report_enum->report_list, list) {
dabb05c6 2202 size_t report_size = hid_report_len(report);
01c846f9
BT		 2203 if (report_size > size)
2204 size = report_size;
2205 }
2206
2207 return size;
2208}
2209
fd5f92b6 2210static void wacom_update_name(struct wacom *wacom, const char *suffix)
c24eab4e
PC		 2211{
2212 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2213 struct wacom_features *features = &wacom_wac->features;
073b50bc 2214 char name[WACOM_NAME_MAX - 20]; /* Leave some room for suffixes */
c24eab4e
PC		 2215
2216 /* Generic devices name unspecified */
2217 if ((features->type == HID_GENERIC) && !strcmp("Wacom HID", features->name)) {
09dc28ac 2218 char *product_name = wacom->hdev->name;
f2209d4a 2219
5f93d204 2220 if (hid_is_usb(wacom->hdev)) {
09dc28ac
JG		 2221 struct usb_interface *intf = to_usb_interface(wacom->hdev->dev.parent);
2222 struct usb_device *dev = interface_to_usbdev(intf);
2223 product_name = dev->product;
2224 }
f2209d4a 2225
09dc28ac
JG		 2226 if (wacom->hdev->bus == BUS_I2C) {
2227 snprintf(name, sizeof(name), "%s %X",
2228 features->name, wacom->hdev->product);
2229 } else if (strstr(product_name, "Wacom") ||
2230 strstr(product_name, "wacom") ||
2231 strstr(product_name, "WACOM")) {
2232 strlcpy(name, product_name, sizeof(name));
c24eab4e 2233 } else {
09dc28ac 2234 snprintf(name, sizeof(name), "Wacom %s", product_name);
c24eab4e 2235 }
09dc28ac
JG		 2236
2237 /* strip out excess whitespaces */
2238 while (1) {
2239 char *gap = strstr(name, " ");
2240 if (gap == NULL)
2241 break;
2242 /* shift everything including the terminator */
2243 memmove(gap, gap+1, strlen(gap));
2244 }
2245
2246 /* get rid of trailing whitespace */
2247 if (name[strlen(name)-1] == ' ')
2248 name[strlen(name)-1] = '\0';
c24eab4e 2249 } else {
44b5250b 2250 strlcpy(name, features->name, sizeof(name));
c24eab4e
PC		 2251 }
2252
9956953e
BT		 2253 snprintf(wacom_wac->name, sizeof(wacom_wac->name), "%s%s",
2254 name, suffix);
2255
c24eab4e 2256 /* Append the device type to the name */
2a6cdbdd 2257 snprintf(wacom_wac->pen_name, sizeof(wacom_wac->pen_name),
fd5f92b6 2258 "%s%s Pen", name, suffix);
2a6cdbdd 2259 snprintf(wacom_wac->touch_name, sizeof(wacom_wac->touch_name),
fd5f92b6 2260 "%s%s Finger", name, suffix);
c24eab4e 2261 snprintf(wacom_wac->pad_name, sizeof(wacom_wac->pad_name),
fd5f92b6 2262 "%s%s Pad", name, suffix);
c24eab4e
PC		 2263}
2264
84dfbd7f
BT		 2265static void wacom_release_resources(struct wacom *wacom)
2266{
2267 struct hid_device *hdev = wacom->hdev;
2268
2269 if (!wacom->resources)
2270 return;
2271
2272 devres_release_group(&hdev->dev, wacom);
2273
2274 wacom->resources = false;
2275
2276 wacom->wacom_wac.pen_input = NULL;
2277 wacom->wacom_wac.touch_input = NULL;
2278 wacom->wacom_wac.pad_input = NULL;
2279}
2280
d2ec58ae
AAS		 2281static void wacom_set_shared_values(struct wacom_wac *wacom_wac)
2282{
2283 if (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH) {
2284 wacom_wac->shared->type = wacom_wac->features.type;
2285 wacom_wac->shared->touch_input = wacom_wac->touch_input;
2286 }
2287
d793ff81 2288 if (wacom_wac->has_mute_touch_switch) {
d2ec58ae 2289 wacom_wac->shared->has_mute_touch_switch = true;
dc9dc864
PC		 2290 /* Hardware touch switch may be off. Wait until
2291 * we know the switch state to decide is_touch_on.
2292 * Softkey state should be initialized to "on" to
2293 * match historic default.
2294 */
2295 if (wacom_wac->is_soft_touch_switch)
2296 wacom_wac->shared->is_touch_on = true;
d793ff81 2297 }
d2ec58ae
AAS		 2298
2299 if (wacom_wac->shared->has_mute_touch_switch &&
2300 wacom_wac->shared->touch_input) {
2301 set_bit(EV_SW, wacom_wac->shared->touch_input->evbit);
2302 input_set_capability(wacom_wac->shared->touch_input, EV_SW,
2303 SW_MUTE_DEVICE);
2304 }
2305}
2306
fd5f92b6 2307static int wacom_parse_and_register(struct wacom *wacom, bool wireless)
3bea733a 2308{
c58ac3a8
BT		 2309 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2310 struct wacom_features *features = &wacom_wac->features;
2311 struct hid_device *hdev = wacom->hdev;
e33da8a5 2312 int error;
7704ac93 2313 unsigned int connect_mask = HID_CONNECT_HIDRAW;
3bea733a 2314
01c846f9 2315 features->pktlen = wacom_compute_pktlen(hdev);
c58ac3a8
BT		 2316 if (features->pktlen > WACOM_PKGLEN_MAX)
2317 return -EINVAL;
3bea733a 2318
84dfbd7f
BT		 2319 if (!devres_open_group(&hdev->dev, wacom, GFP_KERNEL))
2320 return -ENOMEM;
2321
2322 wacom->resources = true;
2323
3f14a63a
JG		 2324 error = wacom_allocate_inputs(wacom);
2325 if (error)
3888b0d5 2326 goto fail;
494078b0 2327
8c97a765
BT		 2328 /*
2329 * Bamboo Pad has a generic hid handling for the Pen, and we switch it
2330 * into debug mode for the touch part.
2331 * We ignore the other interfaces.
2332 */
2333 if (features->type == BAMBOO_PAD) {
2334 if (features->pktlen == WACOM_PKGLEN_PENABLED) {
2335 features->type = HID_GENERIC;
2336 } else if ((features->pktlen != WACOM_PKGLEN_BPAD_TOUCH) &&
2337 (features->pktlen != WACOM_PKGLEN_BPAD_TOUCH_USB)) {
2338 error = -ENODEV;
3888b0d5 2339 goto fail;
8c97a765
BT		 2340 }
2341 }
2342
401d7d10
PC		 2343 /* set the default size in case we do not get them from hid */
2344 wacom_set_default_phy(features);
2345
f393ee2b 2346 /* Retrieve the physical and logical size for touch devices */
c669fb2b 2347 wacom_retrieve_hid_descriptor(hdev, features);
42f4f272 2348 wacom_setup_device_quirks(wacom);
042628ab 2349
aa86b18c
JG		 2350 if (features->device_type == WACOM_DEVICETYPE_NONE &&
2351 features->type != WIRELESS) {
8e116d31
JG		 2352 error = features->type == HID_GENERIC ? -ENODEV : 0;
2353
042628ab 2354 dev_warn(&hdev->dev, "Unknown device_type for '%s'. %s.",
8e116d31
JG		 2355 hdev->name,
2356 error ? "Ignoring" : "Assuming pen");
2357
2358 if (error)
3888b0d5 2359 goto fail;
042628ab 2360
aa86b18c 2361 features->device_type |= WACOM_DEVICETYPE_PEN;
042628ab
JG		 2362 }
2363
401d7d10
PC		 2364 wacom_calculate_res(features);
2365
fd5f92b6 2366 wacom_update_name(wacom, wireless ? " (WL)" : "");
4492efff 2367
8b407359
AAS		 2368 /* pen only Bamboo neither support touch nor pad */
2369 if ((features->type == BAMBOO_PEN) &&
2370 ((features->device_type & WACOM_DEVICETYPE_TOUCH) ||
2371 (features->device_type & WACOM_DEVICETYPE_PAD))) {
2372 error = -ENODEV;
2373 goto fail;
2374 }
2375
a9ce7856
JG		 2376 error = wacom_add_shared_data(hdev);
2377 if (error)
2378 goto fail;
49b764ae 2379
ccad85cc 2380 if (!(features->device_type & WACOM_DEVICETYPE_WL_MONITOR) &&
f81a1295
BT		 2381 (features->quirks & WACOM_QUIRK_BATTERY)) {
2382 error = wacom_initialize_battery(wacom);
2383 if (error)
3888b0d5 2384 goto fail;
f81a1295
BT		 2385 }
2386
3f14a63a
JG		 2387 error = wacom_register_inputs(wacom);
2388 if (error)
3888b0d5 2389 goto fail;
f81a1295 2390
b62f6465 2391 if (wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD) {
85d2c77b
BT		 2392 error = wacom_initialize_leds(wacom);
2393 if (error)
3888b0d5 2394 goto fail;
85d2c77b 2395
83e6b40e 2396 error = wacom_initialize_remotes(wacom);
b62f6465 2397 if (error)
3888b0d5 2398 goto fail;
b62f6465
BT		 2399 }
2400
7704ac93
BT		 2401 if (features->type == HID_GENERIC)
2402 connect_mask |= HID_CONNECT_DRIVER;
2403
29b47391 2404 /* Regular HID work starts now */
7704ac93 2405 error = hid_hw_start(hdev, connect_mask);
29b47391
BT		 2406 if (error) {
2407 hid_err(hdev, "hw start failed\n");
3888b0d5 2408 goto fail;
d3825d51 2409 }
961794a0 2410
fd5f92b6
BT		 2411 if (!wireless) {
2412 /* Note that if query fails it is not a hard failure */
a544c619 2413 wacom_query_tablet_data(wacom);
fd5f92b6 2414 }
86e88f0e
JG		 2415
2416 /* touch only Bamboo doesn't support pen */
2417 if ((features->type == BAMBOO_TOUCH) &&
2418 (features->device_type & WACOM_DEVICETYPE_PEN)) {
4d20c332
AAS		 2419 cancel_delayed_work_sync(&wacom->init_work);
2420 _wacom_query_tablet_data(wacom);
86e88f0e 2421 error = -ENODEV;
b62f6465 2422 goto fail_quirks;
86e88f0e
JG		 2423 }
2424
ccad85cc 2425 if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR)
29b47391
BT		 2426 error = hid_hw_open(hdev);
2427
d2ec58ae 2428 wacom_set_shared_values(wacom_wac);
84dfbd7f
BT		 2429 devres_close_group(&hdev->dev, wacom);
2430
3bea733a
PC		 2431 return 0;
2432
b62f6465 2433fail_quirks:
c58ac3a8 2434 hid_hw_stop(hdev);
3888b0d5 2435fail:
84dfbd7f 2436 wacom_release_resources(wacom);
c58ac3a8
BT		 2437 return error;
2438}
2439
a2f091af
BT		 2440static void wacom_wireless_work(struct work_struct *work)
2441{
d17d1f17 2442 struct wacom *wacom = container_of(work, struct wacom, wireless_work);
a2f091af
BT		 2443 struct usb_device *usbdev = wacom->usbdev;
2444 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2445 struct hid_device *hdev1, *hdev2;
2446 struct wacom *wacom1, *wacom2;
2447 struct wacom_wac *wacom_wac1, *wacom_wac2;
2448 int error;
2449
2450 /*
2451 * Regardless if this is a disconnect or a new tablet,
2452 * remove any existing input and battery devices.
2453 */
2454
2455 wacom_destroy_battery(wacom);
2456
092e7ddc
GKH		 2457 if (!usbdev)
2458 return;
2459
a2f091af
BT		 2460 /* Stylus interface */
2461 hdev1 = usb_get_intfdata(usbdev->config->interface[1]);
2462 wacom1 = hid_get_drvdata(hdev1);
2463 wacom_wac1 = &(wacom1->wacom_wac);
84dfbd7f 2464 wacom_release_resources(wacom1);
a2f091af
BT		 2465
2466 /* Touch interface */
2467 hdev2 = usb_get_intfdata(usbdev->config->interface[2]);
2468 wacom2 = hid_get_drvdata(hdev2);
2469 wacom_wac2 = &(wacom2->wacom_wac);
84dfbd7f 2470 wacom_release_resources(wacom2);
a2f091af
BT		 2471
2472 if (wacom_wac->pid == 0) {
2473 hid_info(wacom->hdev, "wireless tablet disconnected\n");
a2f091af
BT		 2474 } else {
2475 const struct hid_device_id *id = wacom_ids;
2476
2477 hid_info(wacom->hdev, "wireless tablet connected with PID %x\n",
2478 wacom_wac->pid);
2479
2480 while (id->bus) {
2481 if (id->vendor == USB_VENDOR_ID_WACOM &&
2482 id->product == wacom_wac->pid)
2483 break;
2484 id++;
2485 }
2486
2487 if (!id->bus) {
2488 hid_info(wacom->hdev, "ignoring unknown PID.\n");
2489 return;
2490 }
2491
2492 /* Stylus interface */
2493 wacom_wac1->features =
2494 *((struct wacom_features *)id->driver_data);
fd5f92b6 2495
a2f091af 2496 wacom_wac1->pid = wacom_wac->pid;
fd5f92b6
BT		 2497 hid_hw_stop(hdev1);
2498 error = wacom_parse_and_register(wacom1, true);
a2f091af
BT		 2499 if (error)
2500 goto fail;
2501
2502 /* Touch interface */
2503 if (wacom_wac1->features.touch_max ||
2504 (wacom_wac1->features.type >= INTUOSHT &&
2505 wacom_wac1->features.type <= BAMBOO_PT)) {
2506 wacom_wac2->features =
2507 *((struct wacom_features *)id->driver_data);
a2f091af 2508 wacom_wac2->pid = wacom_wac->pid;
fd5f92b6
BT		 2509 hid_hw_stop(hdev2);
2510 error = wacom_parse_and_register(wacom2, true);
a2f091af
BT		 2511 if (error)
2512 goto fail;
a2f091af
BT		 2513 }
2514
9956953e
BT		 2515 strlcpy(wacom_wac->name, wacom_wac1->name,
2516 sizeof(wacom_wac->name));
a2f091af
BT		 2517 error = wacom_initialize_battery(wacom);
2518 if (error)
2519 goto fail;
2520 }
2521
2522 return;
2523
2524fail:
84dfbd7f 2525 wacom_release_resources(wacom1);
84dfbd7f 2526 wacom_release_resources(wacom2);
a2f091af
BT		 2527 return;
2528}
2529
04bfa27b
BT		 2530static void wacom_remote_destroy_one(struct wacom *wacom, unsigned int index)
2531{
2532 struct wacom_remote *remote = wacom->remote;
e7749f6e 2533 u32 serial = remote->remotes[index].serial;
04bfa27b 2534 int i;
7c35dc3c
BT		 2535 unsigned long flags;
2536
791ae273
AAS		 2537 for (i = 0; i < WACOM_MAX_REMOTES; i++) {
2538 if (remote->remotes[i].serial == serial) {
04bfa27b 2539
791ae273
AAS		 2540 spin_lock_irqsave(&remote->remote_lock, flags);
2541 remote->remotes[i].registered = false;
2542 spin_unlock_irqrestore(&remote->remote_lock, flags);
9f1015d4 2543
791ae273
AAS		 2544 if (remote->remotes[i].battery.battery)
2545 devres_release_group(&wacom->hdev->dev,
2546 &remote->remotes[i].battery.bat_desc);
2547
2548 if (remote->remotes[i].group.name)
2549 devres_release_group(&wacom->hdev->dev,
2550 &remote->remotes[i]);
04bfa27b 2551
e7749f6e
BT		 2552 remote->remotes[i].serial = 0;
2553 remote->remotes[i].group.name = NULL;
9f1015d4 2554 remote->remotes[i].battery.battery = NULL;
04bfa27b
BT		 2555 wacom->led.groups[i].select = WACOM_STATUS_UNKNOWN;
2556 }
2557 }
2558}
2559
2560static int wacom_remote_create_one(struct wacom *wacom, u32 serial,
2561 unsigned int index)
2562{
2563 struct wacom_remote *remote = wacom->remote;
f9036bd4 2564 struct device *dev = &wacom->hdev->dev;
04bfa27b
BT		 2565 int error, k;
2566
2567 /* A remote can pair more than once with an EKR,
2568 * check to make sure this serial isn't already paired.
2569 */
2570 for (k = 0; k < WACOM_MAX_REMOTES; k++) {
e7749f6e 2571 if (remote->remotes[k].serial == serial)
04bfa27b
BT		 2572 break;
2573 }
2574
2575 if (k < WACOM_MAX_REMOTES) {
e7749f6e 2576 remote->remotes[index].serial = serial;
04bfa27b
BT		 2577 return 0;
2578 }
2579
e7749f6e 2580 if (!devres_open_group(dev, &remote->remotes[index], GFP_KERNEL))
f9036bd4
BT		 2581 return -ENOMEM;
2582
04bfa27b
BT		 2583 error = wacom_remote_create_attr_group(wacom, serial, index);
2584 if (error)
f9036bd4 2585 goto fail;
04bfa27b 2586
7c35dc3c
BT		 2587 remote->remotes[index].input = wacom_allocate_input(wacom);
2588 if (!remote->remotes[index].input) {
2589 error = -ENOMEM;
2590 goto fail;
2591 }
2592 remote->remotes[index].input->uniq = remote->remotes[index].group.name;
2593 remote->remotes[index].input->name = wacom->wacom_wac.pad_name;
2594
2595 if (!remote->remotes[index].input->name) {
2596 error = -EINVAL;
2597 goto fail;
2598 }
2599
2600 error = wacom_setup_pad_input_capabilities(remote->remotes[index].input,
2601 &wacom->wacom_wac);
2602 if (error)
2603 goto fail;
2604
e7749f6e 2605 remote->remotes[index].serial = serial;
04bfa27b 2606
7c35dc3c
BT		 2607 error = input_register_device(remote->remotes[index].input);
2608 if (error)
2609 goto fail;
2610
97f5541f
BT		 2611 error = wacom_led_groups_alloc_and_register_one(
2612 &remote->remotes[index].input->dev,
2613 wacom, index, 3, true);
2614 if (error)
2615 goto fail;
2616
7c35dc3c
BT		 2617 remote->remotes[index].registered = true;
2618
e7749f6e 2619 devres_close_group(dev, &remote->remotes[index]);
04bfa27b 2620 return 0;
f9036bd4
BT		 2621
2622fail:
e7749f6e
BT		 2623 devres_release_group(dev, &remote->remotes[index]);
2624 remote->remotes[index].serial = 0;
f9036bd4 2625 return error;
04bfa27b
BT		 2626}
2627
9f1015d4
BT		 2628static int wacom_remote_attach_battery(struct wacom *wacom, int index)
2629{
2630 struct wacom_remote *remote = wacom->remote;
2631 int error;
2632
2633 if (!remote->remotes[index].registered)
2634 return 0;
2635
2636 if (remote->remotes[index].battery.battery)
2637 return 0;
2638
2639 if (wacom->led.groups[index].select == WACOM_STATUS_UNKNOWN)
2640 return 0;
2641
2642 error = __wacom_initialize_battery(wacom,
2643 &wacom->remote->remotes[index].battery);
2644 if (error)
2645 return error;
2646
2647 return 0;
2648}
2649
e6f2813a
BT		 2650static void wacom_remote_work(struct work_struct *work)
2651{
2652 struct wacom *wacom = container_of(work, struct wacom, remote_work);
83e6b40e 2653 struct wacom_remote *remote = wacom->remote;
e6f2813a
BT		 2654 struct wacom_remote_data data;
2655 unsigned long flags;
2656 unsigned int count;
2657 u32 serial;
04bfa27b 2658 int i;
e6f2813a 2659
83e6b40e 2660 spin_lock_irqsave(&remote->remote_lock, flags);
e6f2813a 2661
83e6b40e 2662 count = kfifo_out(&remote->remote_fifo, &data, sizeof(data));
e6f2813a
BT		 2663
2664 if (count != sizeof(data)) {
2665 hid_err(wacom->hdev,
2666 "workitem triggered without status available\n");
83e6b40e 2667 spin_unlock_irqrestore(&remote->remote_lock, flags);
e6f2813a
BT		 2668 return;
2669 }
2670
83e6b40e 2671 if (!kfifo_is_empty(&remote->remote_fifo))
e6f2813a
BT		 2672 wacom_schedule_work(&wacom->wacom_wac, WACOM_WORKER_REMOTE);
2673
83e6b40e 2674 spin_unlock_irqrestore(&remote->remote_lock, flags);
e6f2813a
BT		 2675
2676 for (i = 0; i < WACOM_MAX_REMOTES; i++) {
2677 serial = data.remote[i].serial;
2678 if (data.remote[i].connected) {
2679
9f1015d4
BT		 2680 if (remote->remotes[i].serial == serial) {
2681 wacom_remote_attach_battery(wacom, i);
e6f2813a 2682 continue;
9f1015d4 2683 }
e6f2813a 2684
e7749f6e 2685 if (remote->remotes[i].serial)
04bfa27b 2686 wacom_remote_destroy_one(wacom, i);
e6f2813a 2687
04bfa27b 2688 wacom_remote_create_one(wacom, serial, i);
e6f2813a 2689
e7749f6e 2690 } else if (remote->remotes[i].serial) {
04bfa27b 2691 wacom_remote_destroy_one(wacom, i);
e6f2813a
BT		 2692 }
2693 }
2694}
2695
4082da80
BT		 2696static void wacom_mode_change_work(struct work_struct *work)
2697{
2698 struct wacom *wacom = container_of(work, struct wacom, mode_change_work);
2699 struct wacom_shared *shared = wacom->wacom_wac.shared;
2700 struct wacom *wacom1 = NULL;
2701 struct wacom *wacom2 = NULL;
2702 bool is_direct = wacom->wacom_wac.is_direct_mode;
2703 int error = 0;
2704
2705 if (shared->pen) {
2706 wacom1 = hid_get_drvdata(shared->pen);
2707 wacom_release_resources(wacom1);
2708 hid_hw_stop(wacom1->hdev);
2709 wacom1->wacom_wac.has_mode_change = true;
2710 wacom1->wacom_wac.is_direct_mode = is_direct;
2711 }
2712
2713 if (shared->touch) {
2714 wacom2 = hid_get_drvdata(shared->touch);
2715 wacom_release_resources(wacom2);
2716 hid_hw_stop(wacom2->hdev);
2717 wacom2->wacom_wac.has_mode_change = true;
2718 wacom2->wacom_wac.is_direct_mode = is_direct;
2719 }
2720
2721 if (wacom1) {
2722 error = wacom_parse_and_register(wacom1, false);
2723 if (error)
2724 return;
2725 }
2726
2727 if (wacom2) {
2728 error = wacom_parse_and_register(wacom2, false);
2729 if (error)
2730 return;
2731 }
2732
a2f091af
BT		 2733 return;
2734}
2735
c58ac3a8
BT		 2736static int wacom_probe(struct hid_device *hdev,
2737 const struct hid_device_id *id)
2738{
c58ac3a8
BT		 2739 struct wacom *wacom;
2740 struct wacom_wac *wacom_wac;
2741 struct wacom_features *features;
2742 int error;
2743
2744 if (!id->driver_data)
2745 return -EINVAL;
2746
2747 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
2748
2749 /* hid-core sets this quirk for the boot interface */
2750 hdev->quirks &= ~HID_QUIRK_NOGET;
2751
19b64330 2752 wacom = devm_kzalloc(&hdev->dev, sizeof(struct wacom), GFP_KERNEL);
c58ac3a8
BT		 2753 if (!wacom)
2754 return -ENOMEM;
2755
2756 hid_set_drvdata(hdev, wacom);
2757 wacom->hdev = hdev;
2758
2759 wacom_wac = &wacom->wacom_wac;
2760 wacom_wac->features = *((struct wacom_features *)id->driver_data);
2761 features = &wacom_wac->features;
2762
362c571b
BT		 2763 if (features->check_for_hid_type && features->hid_type != hdev->type)
2764 return -ENODEV;
c58ac3a8 2765
37309f47 2766 error = wacom_devm_kfifo_alloc(wacom);
83417206 2767 if (error)
362c571b 2768 return error;
83417206 2769
c6fa1aeb 2770 wacom_wac->hid_data.inputmode = -1;
326ea2a9 2771 wacom_wac->mode_report = -1;
c6fa1aeb 2772
092e7ddc
GKH		 2773 if (hid_is_usb(hdev)) {
2774 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
2775 struct usb_device *dev = interface_to_usbdev(intf);
2776
2777 wacom->usbdev = dev;
2778 wacom->intf = intf;
2779 }
2780
c58ac3a8 2781 mutex_init(&wacom->lock);
a544c619 2782 INIT_DELAYED_WORK(&wacom->init_work, wacom_init_work);
d17d1f17
BT		 2783 INIT_WORK(&wacom->wireless_work, wacom_wireless_work);
2784 INIT_WORK(&wacom->battery_work, wacom_battery_work);
e6f2813a 2785 INIT_WORK(&wacom->remote_work, wacom_remote_work);
4082da80 2786 INIT_WORK(&wacom->mode_change_work, wacom_mode_change_work);
c58ac3a8
BT		 2787
2788 /* ask for the report descriptor to be loaded by HID */
2789 error = hid_parse(hdev);
2790 if (error) {
2791 hid_err(hdev, "parse failed\n");
362c571b 2792 return error;
c58ac3a8
BT		 2793 }
2794
fd5f92b6 2795 error = wacom_parse_and_register(wacom, false);
c58ac3a8 2796 if (error)
362c571b 2797 return error;
c58ac3a8
BT		 2798
2799 if (hdev->bus == BUS_BLUETOOTH) {
2800 error = device_create_file(&hdev->dev, &dev_attr_speed);
2801 if (error)
2802 hid_warn(hdev,
2803 "can't create sysfs speed attribute err: %d\n",
2804 error);
2805 }
2806
5bed0128 2807 wacom_wac->probe_complete = true;
c58ac3a8 2808 return 0;
3bea733a
PC		 2809}
2810
29b47391 2811static void wacom_remove(struct hid_device *hdev)
3bea733a 2812{
29b47391 2813 struct wacom *wacom = hid_get_drvdata(hdev);
f6205161
BT		 2814 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2815 struct wacom_features *features = &wacom_wac->features;
2816
2817 if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR)
2818 hid_hw_close(hdev);
3bea733a 2819
29b47391 2820 hid_hw_stop(hdev);
e7224094 2821
a544c619 2822 cancel_delayed_work_sync(&wacom->init_work);
d17d1f17
BT		 2823 cancel_work_sync(&wacom->wireless_work);
2824 cancel_work_sync(&wacom->battery_work);
e6f2813a 2825 cancel_work_sync(&wacom->remote_work);
4082da80 2826 cancel_work_sync(&wacom->mode_change_work);
f81a1295
BT		 2827 if (hdev->bus == BUS_BLUETOOTH)
2828 device_remove_file(&hdev->dev, &dev_attr_speed);
e7224094 2829
c0265a94
BT		 2830 /* make sure we don't trigger the LEDs */
2831 wacom_led_groups_release(wacom);
b6b1f19b
AAS		 2832
2833 if (wacom->wacom_wac.features.type != REMOTE)
2834 wacom_release_resources(wacom);
e7224094
ON		 2835}
2836
41a74581 2837#ifdef CONFIG_PM
29b47391 2838static int wacom_resume(struct hid_device *hdev)
e7224094 2839{
29b47391 2840 struct wacom *wacom = hid_get_drvdata(hdev);
e7224094
ON		 2841
2842 mutex_lock(&wacom->lock);
38101475
PC		 2843
2844 /* switch to wacom mode first */
a544c619 2845 _wacom_query_tablet_data(wacom);
5d7e7d47 2846 wacom_led_control(wacom);
38101475 2847
e7224094
ON		 2848 mutex_unlock(&wacom->lock);
2849
29b47391 2850 return 0;
e7224094
ON		 2851}
2852
29b47391 2853static int wacom_reset_resume(struct hid_device *hdev)
e7224094 2854{
29b47391 2855 return wacom_resume(hdev);
3bea733a 2856}
41a74581 2857#endif /* CONFIG_PM */
3bea733a 2858
29b47391 2859static struct hid_driver wacom_driver = {
3bea733a 2860 .name = "wacom",
b036f6fb 2861 .id_table = wacom_ids,
3bea733a 2862 .probe = wacom_probe,
29b47391 2863 .remove = wacom_remove,
7704ac93 2864 .report = wacom_wac_report,
29b47391 2865#ifdef CONFIG_PM
e7224094
ON		 2866 .resume = wacom_resume,
2867 .reset_resume = wacom_reset_resume,
29b47391
BT		 2868#endif
2869 .raw_event = wacom_raw_event,
3bea733a 2870};
29b47391 2871module_hid_driver(wacom_driver);
f2e0a7d4
BT		 2872
2873MODULE_VERSION(DRIVER_VERSION);
2874MODULE_AUTHOR(DRIVER_AUTHOR);
2875MODULE_DESCRIPTION(DRIVER_DESC);
7021b600 2876MODULE_LICENSE("GPL");
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