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Merge remote-tracking branch 'spi/for-next'
[deliverable/linux.git] / drivers / hid / wacom_sys.c
CommitLineData
3bea733a 1/*
4104d13f 2 * drivers/input/tablet/wacom_sys.c
3bea733a 3 *
232f5693 4 * USB Wacom tablet support - system specific code
3bea733a
PC		 5 */
6
7/*
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 */
13
3bea733a 14#include "wacom_wac.h"
51269fe8 15#include "wacom.h"
b58ba1ba 16#include <linux/input/mt.h>
3bea733a 17
a417ea44 18#define WAC_MSG_RETRIES 5
3bea733a 19
912ca216 20#define WAC_CMD_WL_LED_CONTROL 0x03
5d7e7d47
EH		 21#define WAC_CMD_LED_CONTROL 0x20
22#define WAC_CMD_ICON_START 0x21
23#define WAC_CMD_ICON_XFER 0x23
849e2f06 24#define WAC_CMD_ICON_BT_XFER 0x26
5d7e7d47 25#define WAC_CMD_RETRIES 10
72b236d6
AS		 26#define WAC_CMD_DELETE_PAIRING 0x20
27#define WAC_CMD_UNPAIR_ALL 0xFF
5d7e7d47 28
e0984bc3
PC		 29#define DEV_ATTR_RW_PERM (S_IRUGO | S_IWUSR | S_IWGRP)
30#define DEV_ATTR_WO_PERM (S_IWUSR | S_IWGRP)
72b236d6 31#define DEV_ATTR_RO_PERM (S_IRUSR | S_IRGRP)
e0984bc3 32
c64d8834
PC		 33static int wacom_get_report(struct hid_device *hdev, u8 type, u8 *buf,
34 size_t size, unsigned int retries)
3bea733a 35{
5d7e7d47
EH		 36 int retval;
37
38 do {
c64d8834 39 retval = hid_hw_raw_request(hdev, buf[0], buf, size, type,
27b20a9d 40 HID_REQ_GET_REPORT);
aef3156d
JG		 41 } while ((retval == -ETIMEDOUT || retval == -EAGAIN) && --retries);
42
43 if (retval < 0)
44 hid_err(hdev, "wacom_get_report: ran out of retries "
45 "(last error = %d)\n", retval);
5d7e7d47
EH		 46
47 return retval;
3bea733a
PC		 48}
49
296b7378
PF		 50static int wacom_set_report(struct hid_device *hdev, u8 type, u8 *buf,
51 size_t size, unsigned int retries)
3bea733a 52{
5d7e7d47
EH		 53 int retval;
54
55 do {
296b7378 56 retval = hid_hw_raw_request(hdev, buf[0], buf, size, type,
27b20a9d 57 HID_REQ_SET_REPORT);
aef3156d
JG		 58 } while ((retval == -ETIMEDOUT || retval == -EAGAIN) && --retries);
59
60 if (retval < 0)
61 hid_err(hdev, "wacom_set_report: ran out of retries "
62 "(last error = %d)\n", retval);
5d7e7d47
EH		 63
64 return retval;
3bea733a
PC		 65}
66
29b47391
BT		 67static int wacom_raw_event(struct hid_device *hdev, struct hid_report *report,
68 u8 *raw_data, int size)
3bea733a 69{
29b47391 70 struct wacom *wacom = hid_get_drvdata(hdev);
3bea733a 71
29b47391
BT		 72 if (size > WACOM_PKGLEN_MAX)
73 return 1;
3bea733a 74
29b47391 75 memcpy(wacom->wacom_wac.data, raw_data, size);
3bea733a 76
29b47391
BT		 77 wacom_wac_irq(&wacom->wacom_wac, size);
78
79 return 0;
3bea733a
PC		 80}
81
3bea733a
PC		 82static int wacom_open(struct input_dev *dev)
83{
7791bdae 84 struct wacom *wacom = input_get_drvdata(dev);
29b47391 85
dff67416 86 return hid_hw_open(wacom->hdev);
3bea733a
PC		 87}
88
89static void wacom_close(struct input_dev *dev)
90{
7791bdae 91 struct wacom *wacom = input_get_drvdata(dev);
3bea733a 92
3dad188e
BT		 93 /*
94 * wacom->hdev should never be null, but surprisingly, I had the case
95 * once while unplugging the Wacom Wireless Receiver.
96 */
97 if (wacom->hdev)
98 hid_hw_close(wacom->hdev);
3bea733a
PC		 99}
100
115d5e12 101/*
198fdee2 102 * Calculate the resolution of the X or Y axis using hidinput_calc_abs_res.
115d5e12
JG		 103 */
104static int wacom_calc_hid_res(int logical_extents, int physical_extents,
c669fb2b 105 unsigned unit, int exponent)
115d5e12 106{
198fdee2
BT		 107 struct hid_field field = {
108 .logical_maximum = logical_extents,
109 .physical_maximum = physical_extents,
110 .unit = unit,
111 .unit_exponent = exponent,
112 };
113
114 return hidinput_calc_abs_res(&field, ABS_X);
115d5e12
JG		 115}
116
c669fb2b
BT		 117static void wacom_feature_mapping(struct hid_device *hdev,
118 struct hid_field *field, struct hid_usage *usage)
f393ee2b 119{
c669fb2b
BT		 120 struct wacom *wacom = hid_get_drvdata(hdev);
121 struct wacom_features *features = &wacom->wacom_wac.features;
5ae6e89f 122 struct hid_data *hid_data = &wacom->wacom_wac.hid_data;
8ffffd52
BT		 123 u8 *data;
124 int ret;
f393ee2b 125
c669fb2b
BT		 126 switch (usage->hid) {
127 case HID_DG_CONTACTMAX:
128 /* leave touch_max as is if predefined */
8ffffd52
BT		 129 if (!features->touch_max) {
130 /* read manually */
131 data = kzalloc(2, GFP_KERNEL);
132 if (!data)
133 break;
134 data[0] = field->report->id;
135 ret = wacom_get_report(hdev, HID_FEATURE_REPORT,
05e8fd92
JG		 136 data, 2, WAC_CMD_RETRIES);
137 if (ret == 2) {
8ffffd52 138 features->touch_max = data[1];
05e8fd92
JG		 139 } else {
140 features->touch_max = 16;
141 hid_warn(hdev, "wacom_feature_mapping: "
142 "could not get HID_DG_CONTACTMAX, "
143 "defaulting to %d\n",
144 features->touch_max);
145 }
8ffffd52
BT		 146 kfree(data);
147 }
c669fb2b 148 break;
5ae6e89f
BT		 149 case HID_DG_INPUTMODE:
150 /* Ignore if value index is out of bounds. */
151 if (usage->usage_index >= field->report_count) {
152 dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n");
153 break;
154 }
155
156 hid_data->inputmode = field->report->id;
157 hid_data->inputmode_index = usage->usage_index;
158 break;
326ea2a9
JG		 159
160 case HID_UP_DIGITIZER:
161 if (field->report->id == 0x0B &&
162 (field->application == WACOM_G9_DIGITIZER ||
163 field->application == WACOM_G11_DIGITIZER)) {
164 wacom->wacom_wac.mode_report = field->report->id;
165 wacom->wacom_wac.mode_value = 0;
166 }
167 break;
168
169 case WACOM_G9_PAGE:
170 case WACOM_G11_PAGE:
171 if (field->report->id == 0x03 &&
172 (field->application == WACOM_G9_TOUCHSCREEN ||
173 field->application == WACOM_G11_TOUCHSCREEN)) {
174 wacom->wacom_wac.mode_report = field->report->id;
175 wacom->wacom_wac.mode_value = 0;
176 }
177 break;
f393ee2b
PC		 178 }
179}
180
428f8588
CB		 181/*
182 * Interface Descriptor of wacom devices can be incomplete and
183 * inconsistent so wacom_features table is used to store stylus
184 * device's packet lengths, various maximum values, and tablet
185 * resolution based on product ID's.
186 *
187 * For devices that contain 2 interfaces, wacom_features table is
188 * inaccurate for the touch interface. Since the Interface Descriptor
189 * for touch interfaces has pretty complete data, this function exists
190 * to query tablet for this missing information instead of hard coding in
191 * an additional table.
192 *
193 * A typical Interface Descriptor for a stylus will contain a
194 * boot mouse application collection that is not of interest and this
195 * function will ignore it.
196 *
197 * It also contains a digitizer application collection that also is not
198 * of interest since any information it contains would be duplicate
199 * of what is in wacom_features. Usually it defines a report of an array
200 * of bytes that could be used as max length of the stylus packet returned.
201 * If it happens to define a Digitizer-Stylus Physical Collection then
202 * the X and Y logical values contain valid data but it is ignored.
203 *
204 * A typical Interface Descriptor for a touch interface will contain a
205 * Digitizer-Finger Physical Collection which will define both logical
206 * X/Y maximum as well as the physical size of tablet. Since touch
207 * interfaces haven't supported pressure or distance, this is enough
208 * information to override invalid values in the wacom_features table.
4134361a 209 *
c669fb2b
BT		 210 * Intuos5 touch interface and 3rd gen Bamboo Touch do not contain useful
211 * data. We deal with them after returning from this function.
428f8588 212 */
c669fb2b
BT		 213static void wacom_usage_mapping(struct hid_device *hdev,
214 struct hid_field *field, struct hid_usage *usage)
545f4e99 215{
c669fb2b
BT		 216 struct wacom *wacom = hid_get_drvdata(hdev);
217 struct wacom_features *features = &wacom->wacom_wac.features;
d97a5522
BT		 218 bool finger = WACOM_FINGER_FIELD(field);
219 bool pen = WACOM_PEN_FIELD(field);
e9fc413f 220
c669fb2b
BT		 221 /*
222 * Requiring Stylus Usage will ignore boot mouse
223 * X/Y values and some cases of invalid Digitizer X/Y
224 * values commonly reported.
225 */
042628ab 226 if (pen)
aa86b18c 227 features->device_type |= WACOM_DEVICETYPE_PEN;
042628ab 228 else if (finger)
aa86b18c 229 features->device_type |= WACOM_DEVICETYPE_TOUCH;
042628ab 230 else
c669fb2b
BT		 231 return;
232
30ebc1ae
PC		 233 /*
234 * Bamboo models do not support HID_DG_CONTACTMAX.
235 * And, Bamboo Pen only descriptor contains touch.
236 */
3b164a00 237 if (features->type > BAMBOO_PT) {
30ebc1ae
PC		 238 /* ISDv4 touch devices at least supports one touch point */
239 if (finger && !features->touch_max)
240 features->touch_max = 1;
241 }
c669fb2b
BT		 242
243 switch (usage->hid) {
244 case HID_GD_X:
245 features->x_max = field->logical_maximum;
246 if (finger) {
c669fb2b 247 features->x_phy = field->physical_maximum;
3b164a00
PC		 248 if ((features->type != BAMBOO_PT) &&
249 (features->type != BAMBOO_TOUCH)) {
c669fb2b
BT		 250 features->unit = field->unit;
251 features->unitExpo = field->unit_exponent;
545f4e99 252 }
c669fb2b
BT		 253 }
254 break;
255 case HID_GD_Y:
256 features->y_max = field->logical_maximum;
257 if (finger) {
258 features->y_phy = field->physical_maximum;
3b164a00
PC		 259 if ((features->type != BAMBOO_PT) &&
260 (features->type != BAMBOO_TOUCH)) {
c669fb2b
BT		 261 features->unit = field->unit;
262 features->unitExpo = field->unit_exponent;
263 }
264 }
265 break;
266 case HID_DG_TIPPRESSURE:
267 if (pen)
268 features->pressure_max = field->logical_maximum;
269 break;
270 }
7704ac93
BT		 271
272 if (features->type == HID_GENERIC)
273 wacom_wac_usage_mapping(hdev, field, usage);
c669fb2b 274}
4134361a 275
b58ba1ba
JG		 276static void wacom_post_parse_hid(struct hid_device *hdev,
277 struct wacom_features *features)
278{
279 struct wacom *wacom = hid_get_drvdata(hdev);
280 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
281
282 if (features->type == HID_GENERIC) {
283 /* Any last-minute generic device setup */
284 if (features->touch_max > 1) {
2a6cdbdd 285 input_mt_init_slots(wacom_wac->touch_input, wacom_wac->features.touch_max,
b58ba1ba
JG		 286 INPUT_MT_DIRECT);
287 }
288 }
289}
290
c669fb2b
BT		 291static void wacom_parse_hid(struct hid_device *hdev,
292 struct wacom_features *features)
293{
294 struct hid_report_enum *rep_enum;
295 struct hid_report *hreport;
296 int i, j;
297
298 /* check features first */
299 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT];
300 list_for_each_entry(hreport, &rep_enum->report_list, list) {
301 for (i = 0; i < hreport->maxfield; i++) {
302 /* Ignore if report count is out of bounds. */
303 if (hreport->field[i]->report_count < 1)
304 continue;
305
306 for (j = 0; j < hreport->field[i]->maxusage; j++) {
307 wacom_feature_mapping(hdev, hreport->field[i],
308 hreport->field[i]->usage + j);
4134361a 309 }
545f4e99
PC		 310 }
311 }
312
c669fb2b
BT		 313 /* now check the input usages */
314 rep_enum = &hdev->report_enum[HID_INPUT_REPORT];
315 list_for_each_entry(hreport, &rep_enum->report_list, list) {
316
317 if (!hreport->maxfield)
318 continue;
319
320 for (i = 0; i < hreport->maxfield; i++)
321 for (j = 0; j < hreport->field[i]->maxusage; j++)
322 wacom_usage_mapping(hdev, hreport->field[i],
323 hreport->field[i]->usage + j);
324 }
b58ba1ba
JG		 325
326 wacom_post_parse_hid(hdev, features);
545f4e99
PC		 327}
328
5ae6e89f
BT		 329static int wacom_hid_set_device_mode(struct hid_device *hdev)
330{
331 struct wacom *wacom = hid_get_drvdata(hdev);
332 struct hid_data *hid_data = &wacom->wacom_wac.hid_data;
333 struct hid_report *r;
334 struct hid_report_enum *re;
335
336 if (hid_data->inputmode < 0)
337 return 0;
338
339 re = &(hdev->report_enum[HID_FEATURE_REPORT]);
340 r = re->report_id_hash[hid_data->inputmode];
341 if (r) {
342 r->field[0]->value[hid_data->inputmode_index] = 2;
343 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
344 }
345 return 0;
346}
347
326ea2a9
JG		 348static int wacom_set_device_mode(struct hid_device *hdev,
349 struct wacom_wac *wacom_wac)
3b7307c2 350{
326ea2a9
JG		 351 u8 *rep_data;
352 struct hid_report *r;
353 struct hid_report_enum *re;
354 int length;
fe494bc2 355 int error = -ENOMEM, limit = 0;
3b7307c2 356
326ea2a9
JG		 357 if (wacom_wac->mode_report < 0)
358 return 0;
359
360 re = &(hdev->report_enum[HID_FEATURE_REPORT]);
361 r = re->report_id_hash[wacom_wac->mode_report];
362 if (!r)
363 return -EINVAL;
364
365 rep_data = hid_alloc_report_buf(r, GFP_KERNEL);
3b7307c2 366 if (!rep_data)
326ea2a9
JG		 367 return -ENOMEM;
368
369 length = hid_report_len(r);
ec67bbed 370
fe494bc2 371 do {
326ea2a9
JG		 372 rep_data[0] = wacom_wac->mode_report;
373 rep_data[1] = wacom_wac->mode_value;
9937c026 374
296b7378
PF		 375 error = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data,
376 length, 1);
3cb83157 377 if (error >= 0)
27b20a9d 378 error = wacom_get_report(hdev, HID_FEATURE_REPORT,
c64d8834 379 rep_data, length, 1);
326ea2a9
JG		 380 } while (error >= 0 &&
381 rep_data[1] != wacom_wac->mode_report &&
382 limit++ < WAC_MSG_RETRIES);
fe494bc2
JG		 383
384 kfree(rep_data);
385
386 return error < 0 ? error : 0;
387}
388
f81a1295
BT		 389static int wacom_bt_query_tablet_data(struct hid_device *hdev, u8 speed,
390 struct wacom_features *features)
391{
387142bb
BT		 392 struct wacom *wacom = hid_get_drvdata(hdev);
393 int ret;
394 u8 rep_data[2];
395
396 switch (features->type) {
397 case GRAPHIRE_BT:
398 rep_data[0] = 0x03;
399 rep_data[1] = 0x00;
296b7378
PF		 400 ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2,
401 3);
387142bb
BT		 402
403 if (ret >= 0) {
404 rep_data[0] = speed == 0 ? 0x05 : 0x06;
405 rep_data[1] = 0x00;
406
407 ret = wacom_set_report(hdev, HID_FEATURE_REPORT,
296b7378 408 rep_data, 2, 3);
387142bb
BT		 409
410 if (ret >= 0) {
411 wacom->wacom_wac.bt_high_speed = speed;
412 return 0;
413 }
414 }
415
416 /*
417 * Note that if the raw queries fail, it's not a hard failure
418 * and it is safe to continue
419 */
420 hid_warn(hdev, "failed to poke device, command %d, err %d\n",
421 rep_data[0], ret);
422 break;
81af7e61
BT		 423 case INTUOS4WL:
424 if (speed == 1)
425 wacom->wacom_wac.bt_features &= ~0x20;
426 else
427 wacom->wacom_wac.bt_features |= 0x20;
428
429 rep_data[0] = 0x03;
430 rep_data[1] = wacom->wacom_wac.bt_features;
431
296b7378
PF		 432 ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2,
433 1);
81af7e61
BT		 434 if (ret >= 0)
435 wacom->wacom_wac.bt_high_speed = speed;
436 break;
387142bb
BT		 437 }
438
f81a1295
BT		 439 return 0;
440}
441
fe494bc2
JG		 442/*
443 * Switch the tablet into its most-capable mode. Wacom tablets are
444 * typically configured to power-up in a mode which sends mouse-like
445 * reports to the OS. To get absolute position, pressure data, etc.
446 * from the tablet, it is necessary to switch the tablet out of this
447 * mode and into one which sends the full range of tablet data.
448 */
27b20a9d
BT		 449static int wacom_query_tablet_data(struct hid_device *hdev,
450 struct wacom_features *features)
fe494bc2 451{
326ea2a9
JG		 452 struct wacom *wacom = hid_get_drvdata(hdev);
453 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
454
f81a1295
BT		 455 if (hdev->bus == BUS_BLUETOOTH)
456 return wacom_bt_query_tablet_data(hdev, 1, features);
457
326ea2a9
JG		 458 if (features->type != HID_GENERIC) {
459 if (features->device_type & WACOM_DEVICETYPE_TOUCH) {
460 if (features->type > TABLETPC) {
461 /* MT Tablet PC touch */
462 wacom_wac->mode_report = 3;
463 wacom_wac->mode_value = 4;
464 } else if (features->type == WACOM_24HDT) {
465 wacom_wac->mode_report = 18;
466 wacom_wac->mode_value = 2;
467 } else if (features->type == WACOM_27QHDT) {
468 wacom_wac->mode_report = 131;
469 wacom_wac->mode_value = 2;
470 } else if (features->type == BAMBOO_PAD) {
471 wacom_wac->mode_report = 2;
472 wacom_wac->mode_value = 2;
473 }
474 } else if (features->device_type & WACOM_DEVICETYPE_PEN) {
475 if (features->type <= BAMBOO_PT) {
476 wacom_wac->mode_report = 2;
477 wacom_wac->mode_value = 2;
478 }
1963518b 479 }
ec67bbed 480 }
3b7307c2 481
326ea2a9
JG		 482 wacom_set_device_mode(hdev, wacom_wac);
483
484 if (features->type == HID_GENERIC)
485 return wacom_hid_set_device_mode(hdev);
486
fe494bc2 487 return 0;
3b7307c2
DT		 488}
489
c669fb2b 490static void wacom_retrieve_hid_descriptor(struct hid_device *hdev,
1963518b 491 struct wacom_features *features)
ec67bbed 492{
27b20a9d
BT		 493 struct wacom *wacom = hid_get_drvdata(hdev);
494 struct usb_interface *intf = wacom->intf;
ec67bbed 495
fed87e65 496 /* default features */
fed87e65
HR		 497 features->x_fuzz = 4;
498 features->y_fuzz = 4;
499 features->pressure_fuzz = 0;
bef7e200
JG		 500 features->distance_fuzz = 1;
501 features->tilt_fuzz = 1;
ec67bbed 502
d3825d51
CB		 503 /*
504 * The wireless device HID is basic and layout conflicts with
505 * other tablets (monitor and touch interface can look like pen).
506 * Skip the query for this type and modify defaults based on
507 * interface number.
508 */
509 if (features->type == WIRELESS) {
3f14a63a 510 if (intf->cur_altsetting->desc.bInterfaceNumber == 0)
ccad85cc 511 features->device_type = WACOM_DEVICETYPE_WL_MONITOR;
3f14a63a 512 else
aa86b18c 513 features->device_type = WACOM_DEVICETYPE_NONE;
3f14a63a 514 return;
d3825d51
CB		 515 }
516
c669fb2b 517 wacom_parse_hid(hdev, features);
ec67bbed
PC		 518}
519
4451e088 520struct wacom_hdev_data {
4492efff
PC		 521 struct list_head list;
522 struct kref kref;
4451e088 523 struct hid_device *dev;
4492efff
PC		 524 struct wacom_shared shared;
525};
526
527static LIST_HEAD(wacom_udev_list);
528static DEFINE_MUTEX(wacom_udev_list_lock);
529
41372d5d
JG		 530static bool compare_device_paths(struct hid_device *hdev_a,
531 struct hid_device *hdev_b, char separator)
532{
533 int n1 = strrchr(hdev_a->phys, separator) - hdev_a->phys;
534 int n2 = strrchr(hdev_b->phys, separator) - hdev_b->phys;
535
536 if (n1 != n2 || n1 <= 0 || n2 <= 0)
537 return false;
538
539 return !strncmp(hdev_a->phys, hdev_b->phys, n1);
540}
541
4451e088
BT		 542static bool wacom_are_sibling(struct hid_device *hdev,
543 struct hid_device *sibling)
aea2bf6a 544{
4451e088
BT		 545 struct wacom *wacom = hid_get_drvdata(hdev);
546 struct wacom_features *features = &wacom->wacom_wac.features;
41372d5d
JG		 547 struct wacom *sibling_wacom = hid_get_drvdata(sibling);
548 struct wacom_features *sibling_features = &sibling_wacom->wacom_wac.features;
549 __u32 oVid = features->oVid ? features->oVid : hdev->vendor;
550 __u32 oPid = features->oPid ? features->oPid : hdev->product;
4451e088 551
41372d5d
JG		 552 /* The defined oVid/oPid must match that of the sibling */
553 if (features->oVid != HID_ANY_ID && sibling->vendor != oVid)
554 return false;
555 if (features->oPid != HID_ANY_ID && sibling->product != oPid)
556 return false;
557
558 /*
559 * Devices with the same VID/PID must share the same physical
560 * device path, while those with different VID/PID must share
561 * the same physical parent device path.
562 */
563 if (hdev->vendor == sibling->vendor && hdev->product == sibling->product) {
564 if (!compare_device_paths(hdev, sibling, '/'))
565 return false;
566 } else {
567 if (!compare_device_paths(hdev, sibling, '.'))
568 return false;
4451e088 569 }
aea2bf6a 570
41372d5d
JG		 571 /* Skip the remaining heuristics unless you are a HID_GENERIC device */
572 if (features->type != HID_GENERIC)
573 return true;
574
575 /*
576 * Direct-input devices may not be siblings of indirect-input
577 * devices.
578 */
579 if ((features->device_type & WACOM_DEVICETYPE_DIRECT) &&
580 !(sibling_features->device_type & WACOM_DEVICETYPE_DIRECT))
4451e088 581 return false;
aea2bf6a 582
41372d5d
JG		 583 /*
584 * Indirect-input devices may not be siblings of direct-input
585 * devices.
586 */
587 if (!(features->device_type & WACOM_DEVICETYPE_DIRECT) &&
588 (sibling_features->device_type & WACOM_DEVICETYPE_DIRECT))
4451e088 589 return false;
aea2bf6a 590
41372d5d
JG		 591 /* Pen devices may only be siblings of touch devices */
592 if ((features->device_type & WACOM_DEVICETYPE_PEN) &&
593 !(sibling_features->device_type & WACOM_DEVICETYPE_TOUCH))
594 return false;
595
596 /* Touch devices may only be siblings of pen devices */
597 if ((features->device_type & WACOM_DEVICETYPE_TOUCH) &&
598 !(sibling_features->device_type & WACOM_DEVICETYPE_PEN))
599 return false;
600
601 /*
602 * No reason could be found for these two devices to NOT be
603 * siblings, so there's a good chance they ARE siblings
604 */
605 return true;
aea2bf6a
JG		 606}
607
4451e088 608static struct wacom_hdev_data *wacom_get_hdev_data(struct hid_device *hdev)
4492efff 609{
4451e088 610 struct wacom_hdev_data *data;
4492efff 611
41372d5d
JG		 612 /* Try to find an already-probed interface from the same device */
613 list_for_each_entry(data, &wacom_udev_list, list) {
614 if (compare_device_paths(hdev, data->dev, '/'))
615 return data;
616 }
617
618 /* Fallback to finding devices that appear to be "siblings" */
4492efff 619 list_for_each_entry(data, &wacom_udev_list, list) {
4451e088 620 if (wacom_are_sibling(hdev, data->dev)) {
4492efff
PC		 621 kref_get(&data->kref);
622 return data;
623 }
624 }
625
626 return NULL;
627}
628
1c817c83
BT		 629static void wacom_release_shared_data(struct kref *kref)
630{
631 struct wacom_hdev_data *data =
632 container_of(kref, struct wacom_hdev_data, kref);
633
634 mutex_lock(&wacom_udev_list_lock);
635 list_del(&data->list);
636 mutex_unlock(&wacom_udev_list_lock);
637
638 kfree(data);
639}
640
641static void wacom_remove_shared_data(void *res)
642{
643 struct wacom *wacom = res;
644 struct wacom_hdev_data *data;
645 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
646
647 if (wacom_wac->shared) {
648 data = container_of(wacom_wac->shared, struct wacom_hdev_data,
649 shared);
650
651 if (wacom_wac->shared->touch == wacom->hdev)
652 wacom_wac->shared->touch = NULL;
653 else if (wacom_wac->shared->pen == wacom->hdev)
654 wacom_wac->shared->pen = NULL;
655
656 kref_put(&data->kref, wacom_release_shared_data);
657 wacom_wac->shared = NULL;
658 }
659}
660
4451e088 661static int wacom_add_shared_data(struct hid_device *hdev)
4492efff 662{
4451e088
BT		 663 struct wacom *wacom = hid_get_drvdata(hdev);
664 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
665 struct wacom_hdev_data *data;
4492efff
PC		 666 int retval = 0;
667
668 mutex_lock(&wacom_udev_list_lock);
669
4451e088 670 data = wacom_get_hdev_data(hdev);
4492efff 671 if (!data) {
4451e088 672 data = kzalloc(sizeof(struct wacom_hdev_data), GFP_KERNEL);
4492efff
PC		 673 if (!data) {
674 retval = -ENOMEM;
675 goto out;
676 }
677
678 kref_init(&data->kref);
4451e088 679 data->dev = hdev;
4492efff
PC		 680 list_add_tail(&data->list, &wacom_udev_list);
681 }
682
4451e088 683 wacom_wac->shared = &data->shared;
4492efff 684
1c817c83
BT		 685 retval = devm_add_action(&hdev->dev, wacom_remove_shared_data, wacom);
686 if (retval) {
687 mutex_unlock(&wacom_udev_list_lock);
688 wacom_remove_shared_data(wacom);
689 return retval;
690 }
691
aa86b18c 692 if (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH)
a97ac104 693 wacom_wac->shared->touch = hdev;
aa86b18c 694 else if (wacom_wac->features.device_type & WACOM_DEVICETYPE_PEN)
a97ac104
BT		 695 wacom_wac->shared->pen = hdev;
696
4492efff
PC		 697out:
698 mutex_unlock(&wacom_udev_list_lock);
699 return retval;
700}
701
5d7e7d47
EH		 702static int wacom_led_control(struct wacom *wacom)
703{
704 unsigned char *buf;
9b5b95dd 705 int retval;
912ca216
PC		 706 unsigned char report_id = WAC_CMD_LED_CONTROL;
707 int buf_size = 9;
5d7e7d47 708
97f5541f
BT		 709 if (!hid_get_drvdata(wacom->hdev))
710 return -ENODEV;
711
a50aac71
BT		 712 if (!wacom->led.groups)
713 return -ENOTSUPP;
714
912ca216
PC		 715 if (wacom->wacom_wac.pid) { /* wireless connected */
716 report_id = WAC_CMD_WL_LED_CONTROL;
717 buf_size = 13;
718 }
719 buf = kzalloc(buf_size, GFP_KERNEL);
5d7e7d47
EH		 720 if (!buf)
721 return -ENOMEM;
722
9b5b95dd 723 if (wacom->wacom_wac.features.type >= INTUOS5S &&
9a35c411 724 wacom->wacom_wac.features.type <= INTUOSPL) {
9b5b95dd
JG		 725 /*
726 * Touch Ring and crop mark LED luminance may take on
727 * one of four values:
728 * 0 = Low; 1 = Medium; 2 = High; 3 = Off
729 */
a50aac71 730 int ring_led = wacom->led.groups[0].select & 0x03;
9b5b95dd
JG		 731 int ring_lum = (((wacom->led.llv & 0x60) >> 5) - 1) & 0x03;
732 int crop_lum = 0;
912ca216
PC		 733 unsigned char led_bits = (crop_lum << 4) | (ring_lum << 2) | (ring_led);
734
735 buf[0] = report_id;
736 if (wacom->wacom_wac.pid) {
737 wacom_get_report(wacom->hdev, HID_FEATURE_REPORT,
738 buf, buf_size, WAC_CMD_RETRIES);
739 buf[0] = report_id;
740 buf[4] = led_bits;
741 } else
742 buf[1] = led_bits;
9b5b95dd
JG		 743 }
744 else {
a50aac71 745 int led = wacom->led.groups[0].select | 0x4;
9b5b95dd
JG		 746
747 if (wacom->wacom_wac.features.type == WACOM_21UX2 ||
748 wacom->wacom_wac.features.type == WACOM_24HD)
a50aac71 749 led |= (wacom->led.groups[1].select << 4) | 0x40;
9b5b95dd 750
912ca216 751 buf[0] = report_id;
9b5b95dd
JG		 752 buf[1] = led;
753 buf[2] = wacom->led.llv;
754 buf[3] = wacom->led.hlv;
755 buf[4] = wacom->led.img_lum;
756 }
5d7e7d47 757
912ca216 758 retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, buf_size,
296b7378 759 WAC_CMD_RETRIES);
5d7e7d47
EH		 760 kfree(buf);
761
762 return retval;
763}
764
849e2f06
BT		 765static int wacom_led_putimage(struct wacom *wacom, int button_id, u8 xfer_id,
766 const unsigned len, const void *img)
5d7e7d47
EH		 767{
768 unsigned char *buf;
769 int i, retval;
849e2f06 770 const unsigned chunk_len = len / 4; /* 4 chunks are needed to be sent */
5d7e7d47 771
849e2f06 772 buf = kzalloc(chunk_len + 3 , GFP_KERNEL);
5d7e7d47
EH		 773 if (!buf)
774 return -ENOMEM;
775
776 /* Send 'start' command */
777 buf[0] = WAC_CMD_ICON_START;
778 buf[1] = 1;
296b7378
PF		 779 retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
780 WAC_CMD_RETRIES);
5d7e7d47
EH		 781 if (retval < 0)
782 goto out;
783
849e2f06 784 buf[0] = xfer_id;
5d7e7d47
EH		 785 buf[1] = button_id & 0x07;
786 for (i = 0; i < 4; i++) {
787 buf[2] = i;
849e2f06 788 memcpy(buf + 3, img + i * chunk_len, chunk_len);
5d7e7d47 789
27b20a9d 790 retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT,
296b7378 791 buf, chunk_len + 3, WAC_CMD_RETRIES);
5d7e7d47
EH		 792 if (retval < 0)
793 break;
794 }
795
796 /* Send 'stop' */
797 buf[0] = WAC_CMD_ICON_START;
798 buf[1] = 0;
296b7378
PF		 799 wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
800 WAC_CMD_RETRIES);
5d7e7d47
EH		 801
802out:
803 kfree(buf);
804 return retval;
805}
806
09e7d941 807static ssize_t wacom_led_select_store(struct device *dev, int set_id,
5d7e7d47
EH		 808 const char *buf, size_t count)
809{
ee79a8f8 810 struct hid_device *hdev = to_hid_device(dev);
29b47391 811 struct wacom *wacom = hid_get_drvdata(hdev);
5d7e7d47
EH		 812 unsigned int id;
813 int err;
814
815 err = kstrtouint(buf, 10, &id);
816 if (err)
817 return err;
818
819 mutex_lock(&wacom->lock);
820
a50aac71 821 wacom->led.groups[set_id].select = id & 0x3;
5d7e7d47
EH		 822 err = wacom_led_control(wacom);
823
824 mutex_unlock(&wacom->lock);
825
826 return err < 0 ? err : count;
827}
828
09e7d941
PC		 829#define DEVICE_LED_SELECT_ATTR(SET_ID) \
830static ssize_t wacom_led##SET_ID##_select_store(struct device *dev, \
831 struct device_attribute *attr, const char *buf, size_t count) \
832{ \
833 return wacom_led_select_store(dev, SET_ID, buf, count); \
834} \
04c59abd
PC		 835static ssize_t wacom_led##SET_ID##_select_show(struct device *dev, \
836 struct device_attribute *attr, char *buf) \
837{ \
ee79a8f8 838 struct hid_device *hdev = to_hid_device(dev);\
29b47391 839 struct wacom *wacom = hid_get_drvdata(hdev); \
37449adc 840 return scnprintf(buf, PAGE_SIZE, "%d\n", \
a50aac71 841 wacom->led.groups[SET_ID].select); \
04c59abd 842} \
e0984bc3 843static DEVICE_ATTR(status_led##SET_ID##_select, DEV_ATTR_RW_PERM, \
04c59abd 844 wacom_led##SET_ID##_select_show, \
09e7d941
PC		 845 wacom_led##SET_ID##_select_store)
846
847DEVICE_LED_SELECT_ATTR(0);
848DEVICE_LED_SELECT_ATTR(1);
5d7e7d47
EH		 849
850static ssize_t wacom_luminance_store(struct wacom *wacom, u8 *dest,
851 const char *buf, size_t count)
852{
853 unsigned int value;
854 int err;
855
856 err = kstrtouint(buf, 10, &value);
857 if (err)
858 return err;
859
860 mutex_lock(&wacom->lock);
861
862 *dest = value & 0x7f;
863 err = wacom_led_control(wacom);
864
865 mutex_unlock(&wacom->lock);
866
867 return err < 0 ? err : count;
868}
869
870#define DEVICE_LUMINANCE_ATTR(name, field) \
871static ssize_t wacom_##name##_luminance_store(struct device *dev, \
872 struct device_attribute *attr, const char *buf, size_t count) \
873{ \
ee79a8f8 874 struct hid_device *hdev = to_hid_device(dev);\
29b47391 875 struct wacom *wacom = hid_get_drvdata(hdev); \
5d7e7d47
EH		 876 \
877 return wacom_luminance_store(wacom, &wacom->led.field, \
878 buf, count); \
879} \
37449adc
PC		 880static ssize_t wacom_##name##_luminance_show(struct device *dev, \
881 struct device_attribute *attr, char *buf) \
882{ \
883 struct wacom *wacom = dev_get_drvdata(dev); \
884 return scnprintf(buf, PAGE_SIZE, "%d\n", wacom->led.field); \
885} \
e0984bc3 886static DEVICE_ATTR(name##_luminance, DEV_ATTR_RW_PERM, \
37449adc
PC		 887 wacom_##name##_luminance_show, \
888 wacom_##name##_luminance_store)
5d7e7d47
EH		 889
890DEVICE_LUMINANCE_ATTR(status0, llv);
891DEVICE_LUMINANCE_ATTR(status1, hlv);
892DEVICE_LUMINANCE_ATTR(buttons, img_lum);
893
894static ssize_t wacom_button_image_store(struct device *dev, int button_id,
895 const char *buf, size_t count)
896{
ee79a8f8 897 struct hid_device *hdev = to_hid_device(dev);
29b47391 898 struct wacom *wacom = hid_get_drvdata(hdev);
5d7e7d47 899 int err;
849e2f06
BT		 900 unsigned len;
901 u8 xfer_id;
902
903 if (hdev->bus == BUS_BLUETOOTH) {
904 len = 256;
905 xfer_id = WAC_CMD_ICON_BT_XFER;
906 } else {
907 len = 1024;
908 xfer_id = WAC_CMD_ICON_XFER;
909 }
5d7e7d47 910
849e2f06 911 if (count != len)
5d7e7d47
EH		 912 return -EINVAL;
913
914 mutex_lock(&wacom->lock);
915
849e2f06 916 err = wacom_led_putimage(wacom, button_id, xfer_id, len, buf);
5d7e7d47
EH		 917
918 mutex_unlock(&wacom->lock);
919
920 return err < 0 ? err : count;
921}
922
923#define DEVICE_BTNIMG_ATTR(BUTTON_ID) \
924static ssize_t wacom_btnimg##BUTTON_ID##_store(struct device *dev, \
925 struct device_attribute *attr, const char *buf, size_t count) \
926{ \
927 return wacom_button_image_store(dev, BUTTON_ID, buf, count); \
928} \
e0984bc3 929static DEVICE_ATTR(button##BUTTON_ID##_rawimg, DEV_ATTR_WO_PERM, \
5d7e7d47
EH		 930 NULL, wacom_btnimg##BUTTON_ID##_store)
931
932DEVICE_BTNIMG_ATTR(0);
933DEVICE_BTNIMG_ATTR(1);
934DEVICE_BTNIMG_ATTR(2);
935DEVICE_BTNIMG_ATTR(3);
936DEVICE_BTNIMG_ATTR(4);
937DEVICE_BTNIMG_ATTR(5);
938DEVICE_BTNIMG_ATTR(6);
939DEVICE_BTNIMG_ATTR(7);
940
09e7d941
PC		 941static struct attribute *cintiq_led_attrs[] = {
942 &dev_attr_status_led0_select.attr,
943 &dev_attr_status_led1_select.attr,
944 NULL
945};
946
947static struct attribute_group cintiq_led_attr_group = {
948 .name = "wacom_led",
949 .attrs = cintiq_led_attrs,
950};
951
952static struct attribute *intuos4_led_attrs[] = {
5d7e7d47
EH		 953 &dev_attr_status0_luminance.attr,
954 &dev_attr_status1_luminance.attr,
09e7d941 955 &dev_attr_status_led0_select.attr,
5d7e7d47
EH		 956 &dev_attr_buttons_luminance.attr,
957 &dev_attr_button0_rawimg.attr,
958 &dev_attr_button1_rawimg.attr,
959 &dev_attr_button2_rawimg.attr,
960 &dev_attr_button3_rawimg.attr,
961 &dev_attr_button4_rawimg.attr,
962 &dev_attr_button5_rawimg.attr,
963 &dev_attr_button6_rawimg.attr,
964 &dev_attr_button7_rawimg.attr,
965 NULL
966};
967
09e7d941 968static struct attribute_group intuos4_led_attr_group = {
5d7e7d47 969 .name = "wacom_led",
09e7d941 970 .attrs = intuos4_led_attrs,
5d7e7d47
EH		 971};
972
9b5b95dd
JG		 973static struct attribute *intuos5_led_attrs[] = {
974 &dev_attr_status0_luminance.attr,
975 &dev_attr_status_led0_select.attr,
976 NULL
977};
978
979static struct attribute_group intuos5_led_attr_group = {
980 .name = "wacom_led",
981 .attrs = intuos5_led_attrs,
982};
983
2df68a88
BT		 984struct wacom_sysfs_group_devres {
985 struct attribute_group *group;
986 struct kobject *root;
987};
988
989static void wacom_devm_sysfs_group_release(struct device *dev, void *res)
990{
991 struct wacom_sysfs_group_devres *devres = res;
992 struct kobject *kobj = devres->root;
993
994 dev_dbg(dev, "%s: dropping reference to %s\n",
995 __func__, devres->group->name);
996 sysfs_remove_group(kobj, devres->group);
997}
998
f9036bd4
BT		 999static int __wacom_devm_sysfs_create_group(struct wacom *wacom,
1000 struct kobject *root,
1001 struct attribute_group *group)
2df68a88
BT		 1002{
1003 struct wacom_sysfs_group_devres *devres;
1004 int error;
1005
1006 devres = devres_alloc(wacom_devm_sysfs_group_release,
1007 sizeof(struct wacom_sysfs_group_devres),
1008 GFP_KERNEL);
1009 if (!devres)
1010 return -ENOMEM;
1011
1012 devres->group = group;
f9036bd4 1013 devres->root = root;
2df68a88
BT		 1014
1015 error = sysfs_create_group(devres->root, group);
1016 if (error)
1017 return error;
1018
1019 devres_add(&wacom->hdev->dev, devres);
1020
1021 return 0;
1022}
1023
f9036bd4
BT		 1024static int wacom_devm_sysfs_create_group(struct wacom *wacom,
1025 struct attribute_group *group)
1026{
1027 return __wacom_devm_sysfs_create_group(wacom, &wacom->hdev->dev.kobj,
1028 group);
1029}
1030
34736aa9 1031enum led_brightness wacom_leds_brightness_get(struct wacom_led *led)
97f5541f
BT		 1032{
1033 struct wacom *wacom = led->wacom;
1034
1035 if (wacom->led.max_hlv)
1036 return led->hlv * LED_FULL / wacom->led.max_hlv;
1037
1038 if (wacom->led.max_llv)
1039 return led->llv * LED_FULL / wacom->led.max_llv;
1040
1041 /* device doesn't support brightness tuning */
1042 return LED_FULL;
1043}
1044
1045static enum led_brightness __wacom_led_brightness_get(struct led_classdev *cdev)
1046{
1047 struct wacom_led *led = container_of(cdev, struct wacom_led, cdev);
1048 struct wacom *wacom = led->wacom;
1049
1050 if (wacom->led.groups[led->group].select != led->id)
1051 return LED_OFF;
1052
1053 return wacom_leds_brightness_get(led);
1054}
1055
1056static int wacom_led_brightness_set(struct led_classdev *cdev,
1057 enum led_brightness brightness)
1058{
1059 struct wacom_led *led = container_of(cdev, struct wacom_led, cdev);
1060 struct wacom *wacom = led->wacom;
1061 int error;
1062
1063 mutex_lock(&wacom->lock);
1064
1065 if (!wacom->led.groups || (brightness == LED_OFF &&
1066 wacom->led.groups[led->group].select != led->id)) {
1067 error = 0;
1068 goto out;
1069 }
1070
1071 led->llv = wacom->led.llv = wacom->led.max_llv * brightness / LED_FULL;
1072 led->hlv = wacom->led.hlv = wacom->led.max_hlv * brightness / LED_FULL;
1073
1074 wacom->led.groups[led->group].select = led->id;
1075
1076 error = wacom_led_control(wacom);
1077
1078out:
1079 mutex_unlock(&wacom->lock);
1080
1081 return error;
1082}
1083
1084static void wacom_led_readonly_brightness_set(struct led_classdev *cdev,
1085 enum led_brightness brightness)
1086{
1087}
1088
1089static int wacom_led_register_one(struct device *dev, struct wacom *wacom,
1090 struct wacom_led *led, unsigned int group,
1091 unsigned int id, bool read_only)
1092{
1093 int error;
1094 char *name;
1095
1096 name = devm_kasprintf(dev, GFP_KERNEL,
1097 "%s::wacom-%d.%d",
1098 dev_name(dev),
1099 group,
1100 id);
1101 if (!name)
1102 return -ENOMEM;
1103
34736aa9
BT		 1104 if (!read_only) {
1105 led->trigger.name = name;
1106 error = devm_led_trigger_register(dev, &led->trigger);
1107 if (error) {
1108 hid_err(wacom->hdev,
1109 "failed to register LED trigger %s: %d\n",
1110 led->cdev.name, error);
1111 return error;
1112 }
1113 }
1114
97f5541f
BT		 1115 led->group = group;
1116 led->id = id;
1117 led->wacom = wacom;
1118 led->llv = wacom->led.llv;
1119 led->hlv = wacom->led.hlv;
1120 led->cdev.name = name;
1121 led->cdev.max_brightness = LED_FULL;
1122 led->cdev.flags = LED_HW_PLUGGABLE;
1123 led->cdev.brightness_get = __wacom_led_brightness_get;
34736aa9 1124 if (!read_only) {
97f5541f 1125 led->cdev.brightness_set_blocking = wacom_led_brightness_set;
34736aa9
BT		 1126 led->cdev.default_trigger = led->cdev.name;
1127 } else {
97f5541f 1128 led->cdev.brightness_set = wacom_led_readonly_brightness_set;
34736aa9 1129 }
97f5541f
BT		 1130
1131 error = devm_led_classdev_register(dev, &led->cdev);
1132 if (error) {
1133 hid_err(wacom->hdev,
1134 "failed to register LED %s: %d\n",
1135 led->cdev.name, error);
1136 led->cdev.name = NULL;
1137 return error;
1138 }
1139
1140 return 0;
1141}
1142
589e5060
BT		 1143static void wacom_led_groups_release_one(void *data)
1144{
1145 struct wacom_group_leds *group = data;
1146
1147 devres_release_group(group->dev, group);
1148}
1149
97f5541f
BT		 1150static int wacom_led_groups_alloc_and_register_one(struct device *dev,
1151 struct wacom *wacom,
1152 int group_id, int count,
1153 bool read_only)
1154{
1155 struct wacom_led *leds;
1156 int i, error;
1157
1158 if (group_id >= wacom->led.count || count <= 0)
1159 return -EINVAL;
1160
1161 if (!devres_open_group(dev, &wacom->led.groups[group_id], GFP_KERNEL))
1162 return -ENOMEM;
1163
1164 leds = devm_kzalloc(dev, sizeof(struct wacom_led) * count, GFP_KERNEL);
1165 if (!leds) {
1166 error = -ENOMEM;
1167 goto err;
1168 }
1169
1170 wacom->led.groups[group_id].leds = leds;
1171 wacom->led.groups[group_id].count = count;
1172
1173 for (i = 0; i < count; i++) {
1174 error = wacom_led_register_one(dev, wacom, &leds[i],
1175 group_id, i, read_only);
1176 if (error)
1177 goto err;
1178 }
1179
589e5060
BT		 1180 wacom->led.groups[group_id].dev = dev;
1181
1182 devres_close_group(dev, &wacom->led.groups[group_id]);
1183
1184 /*
1185 * There is a bug (?) in devm_led_classdev_register() in which its
1186 * increments the refcount of the parent. If the parent is an input
1187 * device, that means the ref count never reaches 0 when
1188 * devm_input_device_release() gets called.
1189 * This means that the LEDs are still there after disconnect.
1190 * Manually force the release of the group so that the leds are released
1191 * once we are done using them.
1192 */
1193 error = devm_add_action_or_reset(&wacom->hdev->dev,
1194 wacom_led_groups_release_one,
1195 &wacom->led.groups[group_id]);
1196 if (error)
1197 return error;
1198
97f5541f
BT		 1199 return 0;
1200
1201err:
1202 devres_release_group(dev, &wacom->led.groups[group_id]);
1203 return error;
1204}
1205
34736aa9
BT		 1206struct wacom_led *wacom_led_find(struct wacom *wacom, unsigned int group_id,
1207 unsigned int id)
1208{
1209 struct wacom_group_leds *group;
1210
1211 if (group_id >= wacom->led.count)
1212 return NULL;
1213
1214 group = &wacom->led.groups[group_id];
1215
1216 if (!group->leds)
1217 return NULL;
1218
1219 id %= group->count;
1220
1221 return &group->leds[id];
1222}
1223
1224/**
1225 * wacom_led_next: gives the next available led with a wacom trigger.
1226 *
1227 * returns the next available struct wacom_led which has its default trigger
1228 * or the current one if none is available.
1229 */
1230struct wacom_led *wacom_led_next(struct wacom *wacom, struct wacom_led *cur)
1231{
1232 struct wacom_led *next_led;
1233 int group, next;
1234
1235 if (!wacom || !cur)
1236 return NULL;
1237
1238 group = cur->group;
1239 next = cur->id;
1240
1241 do {
1242 next_led = wacom_led_find(wacom, group, ++next);
1243 if (!next_led || next_led == cur)
1244 return next_led;
1245 } while (next_led->cdev.trigger != &next_led->trigger);
1246
1247 return next_led;
1248}
1249
a50aac71
BT		 1250static void wacom_led_groups_release(void *data)
1251{
1252 struct wacom *wacom = data;
1253
1254 wacom->led.groups = NULL;
97f5541f 1255 wacom->led.count = 0;
a50aac71
BT		 1256}
1257
1258static int wacom_led_groups_allocate(struct wacom *wacom, int count)
1259{
97f5541f 1260 struct device *dev = &wacom->hdev->dev;
a50aac71
BT		 1261 struct wacom_group_leds *groups;
1262 int error;
1263
97f5541f 1264 groups = devm_kzalloc(dev, sizeof(struct wacom_group_leds) * count,
a50aac71
BT		 1265 GFP_KERNEL);
1266 if (!groups)
1267 return -ENOMEM;
1268
97f5541f 1269 error = devm_add_action_or_reset(dev, wacom_led_groups_release, wacom);
a50aac71
BT		 1270 if (error)
1271 return error;
1272
1273 wacom->led.groups = groups;
97f5541f
BT		 1274 wacom->led.count = count;
1275
1276 return 0;
1277}
1278
1279static int wacom_leds_alloc_and_register(struct wacom *wacom, int group_count,
1280 int led_per_group, bool read_only)
1281{
1282 struct device *dev;
1283 int i, error;
1284
1285 if (!wacom->wacom_wac.pad_input)
1286 return -EINVAL;
1287
1288 dev = &wacom->wacom_wac.pad_input->dev;
1289
1290 error = wacom_led_groups_allocate(wacom, group_count);
1291 if (error)
1292 return error;
1293
1294 for (i = 0; i < group_count; i++) {
1295 error = wacom_led_groups_alloc_and_register_one(dev, wacom, i,
1296 led_per_group,
1297 read_only);
1298 if (error)
1299 return error;
1300 }
a50aac71
BT		 1301
1302 return 0;
1303}
1304
5d7e7d47
EH		 1305static int wacom_initialize_leds(struct wacom *wacom)
1306{
1307 int error;
1308
862cf553
JG		 1309 if (!(wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD))
1310 return 0;
1311
09e7d941
PC		 1312 /* Initialize default values */
1313 switch (wacom->wacom_wac.features.type) {
a19fc986 1314 case INTUOS4S:
09e7d941 1315 case INTUOS4:
81af7e61 1316 case INTUOS4WL:
09e7d941 1317 case INTUOS4L:
f4fa9a6d 1318 wacom->led.llv = 10;
5d7e7d47 1319 wacom->led.hlv = 20;
97f5541f
BT		 1320 wacom->led.max_llv = 127;
1321 wacom->led.max_hlv = 127;
5d7e7d47 1322 wacom->led.img_lum = 10;
a50aac71 1323
97f5541f 1324 error = wacom_leds_alloc_and_register(wacom, 1, 4, false);
a50aac71
BT		 1325 if (error) {
1326 hid_err(wacom->hdev,
1327 "cannot create leds err: %d\n", error);
1328 return error;
1329 }
1330
2df68a88
BT		 1331 error = wacom_devm_sysfs_create_group(wacom,
1332 &intuos4_led_attr_group);
09e7d941
PC		 1333 break;
1334
246835fc 1335 case WACOM_24HD:
09e7d941 1336 case WACOM_21UX2:
09e7d941
PC		 1337 wacom->led.llv = 0;
1338 wacom->led.hlv = 0;
1339 wacom->led.img_lum = 0;
5d7e7d47 1340
97f5541f 1341 error = wacom_leds_alloc_and_register(wacom, 2, 4, false);
a50aac71
BT		 1342 if (error) {
1343 hid_err(wacom->hdev,
1344 "cannot create leds err: %d\n", error);
1345 return error;
1346 }
1347
2df68a88
BT		 1348 error = wacom_devm_sysfs_create_group(wacom,
1349 &cintiq_led_attr_group);
09e7d941
PC		 1350 break;
1351
9b5b95dd
JG		 1352 case INTUOS5S:
1353 case INTUOS5:
1354 case INTUOS5L:
9a35c411
PC		 1355 case INTUOSPS:
1356 case INTUOSPM:
1357 case INTUOSPL:
862cf553 1358 wacom->led.llv = 32;
97f5541f 1359 wacom->led.max_llv = 96;
862cf553 1360
97f5541f 1361 error = wacom_leds_alloc_and_register(wacom, 1, 4, false);
a50aac71
BT		 1362 if (error) {
1363 hid_err(wacom->hdev,
1364 "cannot create leds err: %d\n", error);
1365 return error;
1366 }
1367
2df68a88
BT		 1368 error = wacom_devm_sysfs_create_group(wacom,
1369 &intuos5_led_attr_group);
9b5b95dd
JG		 1370 break;
1371
a50aac71 1372 case REMOTE:
97f5541f
BT		 1373 wacom->led.llv = 255;
1374 wacom->led.max_llv = 255;
a50aac71
BT		 1375 error = wacom_led_groups_allocate(wacom, 5);
1376 if (error) {
1377 hid_err(wacom->hdev,
1378 "cannot create leds err: %d\n", error);
1379 return error;
1380 }
1381 return 0;
1382
09e7d941
PC		 1383 default:
1384 return 0;
5d7e7d47
EH		 1385 }
1386
09e7d941 1387 if (error) {
c31a408f 1388 hid_err(wacom->hdev,
09e7d941
PC		 1389 "cannot create sysfs group err: %d\n", error);
1390 return error;
1391 }
1392 wacom_led_control(wacom);
1393
5d7e7d47
EH		 1394 return 0;
1395}
1396
a1d552cc 1397static enum power_supply_property wacom_battery_props[] = {
9956953e 1398 POWER_SUPPLY_PROP_MODEL_NAME,
71fa641e 1399 POWER_SUPPLY_PROP_PRESENT,
ac8d1010 1400 POWER_SUPPLY_PROP_STATUS,
6e2a6e80 1401 POWER_SUPPLY_PROP_SCOPE,
a1d552cc
CB		 1402 POWER_SUPPLY_PROP_CAPACITY
1403};
1404
1405static int wacom_battery_get_property(struct power_supply *psy,
1406 enum power_supply_property psp,
1407 union power_supply_propval *val)
1408{
59d69bc8 1409 struct wacom_battery *battery = power_supply_get_drvdata(psy);
a1d552cc
CB		 1410 int ret = 0;
1411
1412 switch (psp) {
9956953e
BT		 1413 case POWER_SUPPLY_PROP_MODEL_NAME:
1414 val->strval = battery->wacom->wacom_wac.name;
1415 break;
71fa641e 1416 case POWER_SUPPLY_PROP_PRESENT:
59d69bc8 1417 val->intval = battery->bat_connected;
71fa641e 1418 break;
6e2a6e80
BN		 1419 case POWER_SUPPLY_PROP_SCOPE:
1420 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
1421 break;
a1d552cc 1422 case POWER_SUPPLY_PROP_CAPACITY:
59d69bc8 1423 val->intval = battery->battery_capacity;
ac8d1010
BT		 1424 break;
1425 case POWER_SUPPLY_PROP_STATUS:
59d69bc8 1426 if (battery->bat_charging)
ac8d1010 1427 val->intval = POWER_SUPPLY_STATUS_CHARGING;
59d69bc8
BT		 1428 else if (battery->battery_capacity == 100 &&
1429 battery->ps_connected)
ac8d1010 1430 val->intval = POWER_SUPPLY_STATUS_FULL;
59d69bc8 1431 else if (battery->ps_connected)
b0882cb7 1432 val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
ac8d1010
BT		 1433 else
1434 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
a1d552cc
CB		 1435 break;
1436 default:
1437 ret = -EINVAL;
1438 break;
1439 }
1440
1441 return ret;
1442}
1443
59d69bc8
BT		 1444static int __wacom_initialize_battery(struct wacom *wacom,
1445 struct wacom_battery *battery)
a1d552cc 1446{
d70420b9 1447 static atomic_t battery_no = ATOMIC_INIT(0);
b189da90 1448 struct device *dev = &wacom->hdev->dev;
59d69bc8 1449 struct power_supply_config psy_cfg = { .drv_data = battery, };
136ae5e9 1450 struct power_supply *ps_bat;
59d69bc8 1451 struct power_supply_desc *bat_desc = &battery->bat_desc;
d70420b9 1452 unsigned long n;
b189da90
BT		 1453 int error;
1454
1455 if (!devres_open_group(dev, bat_desc, GFP_KERNEL))
1456 return -ENOMEM;
a1d552cc 1457
9956953e
BT		 1458 battery->wacom = wacom;
1459
59d69bc8
BT		 1460 n = atomic_inc_return(&battery_no) - 1;
1461
1462 bat_desc->properties = wacom_battery_props;
1463 bat_desc->num_properties = ARRAY_SIZE(wacom_battery_props);
1464 bat_desc->get_property = wacom_battery_get_property;
1465 sprintf(battery->bat_name, "wacom_battery_%ld", n);
1466 bat_desc->name = battery->bat_name;
96983296 1467 bat_desc->type = POWER_SUPPLY_TYPE_USB;
59d69bc8
BT		 1468 bat_desc->use_for_apm = 0;
1469
59d69bc8
BT		 1470 ps_bat = devm_power_supply_register(dev, bat_desc, &psy_cfg);
1471 if (IS_ERR(ps_bat)) {
1472 error = PTR_ERR(ps_bat);
1473 goto err;
1474 }
297d716f 1475
59d69bc8 1476 power_supply_powers(ps_bat, &wacom->hdev->dev);
7dbd229e 1477
59d69bc8 1478 battery->battery = ps_bat;
a1d552cc 1479
b189da90 1480 devres_close_group(dev, bat_desc);
7dbd229e 1481 return 0;
b189da90
BT		 1482
1483err:
1484 devres_release_group(dev, bat_desc);
1485 return error;
a1d552cc
CB		 1486}
1487
59d69bc8
BT		 1488static int wacom_initialize_battery(struct wacom *wacom)
1489{
1490 if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY)
1491 return __wacom_initialize_battery(wacom, &wacom->battery);
1492
1493 return 0;
1494}
1495
a1d552cc
CB		 1496static void wacom_destroy_battery(struct wacom *wacom)
1497{
59d69bc8
BT		 1498 if (wacom->battery.battery) {
1499 devres_release_group(&wacom->hdev->dev,
1500 &wacom->battery.bat_desc);
1501 wacom->battery.battery = NULL;
b7af2bb8 1502 }
a1d552cc
CB		 1503}
1504
f81a1295
BT		 1505static ssize_t wacom_show_speed(struct device *dev,
1506 struct device_attribute
1507 *attr, char *buf)
1508{
ee79a8f8 1509 struct hid_device *hdev = to_hid_device(dev);
f81a1295
BT		 1510 struct wacom *wacom = hid_get_drvdata(hdev);
1511
1512 return snprintf(buf, PAGE_SIZE, "%i\n", wacom->wacom_wac.bt_high_speed);
1513}
1514
1515static ssize_t wacom_store_speed(struct device *dev,
1516 struct device_attribute *attr,
1517 const char *buf, size_t count)
1518{
ee79a8f8 1519 struct hid_device *hdev = to_hid_device(dev);
f81a1295
BT		 1520 struct wacom *wacom = hid_get_drvdata(hdev);
1521 u8 new_speed;
1522
1523 if (kstrtou8(buf, 0, &new_speed))
1524 return -EINVAL;
1525
1526 if (new_speed != 0 && new_speed != 1)
1527 return -EINVAL;
1528
1529 wacom_bt_query_tablet_data(hdev, new_speed, &wacom->wacom_wac.features);
1530
1531 return count;
1532}
1533
e0984bc3 1534static DEVICE_ATTR(speed, DEV_ATTR_RW_PERM,
f81a1295
BT		 1535 wacom_show_speed, wacom_store_speed);
1536
72b236d6
AS		 1537
1538static ssize_t wacom_show_remote_mode(struct kobject *kobj,
1539 struct kobj_attribute *kattr,
1540 char *buf, int index)
1541{
2cf83833 1542 struct device *dev = kobj_to_dev(kobj->parent);
ee79a8f8 1543 struct hid_device *hdev = to_hid_device(dev);
72b236d6
AS		 1544 struct wacom *wacom = hid_get_drvdata(hdev);
1545 u8 mode;
1546
a50aac71 1547 mode = wacom->led.groups[index].select;
72b236d6
AS		 1548 if (mode >= 0 && mode < 3)
1549 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
1550 else
1551 return snprintf(buf, PAGE_SIZE, "%d\n", -1);
1552}
1553
1554#define DEVICE_EKR_ATTR_GROUP(SET_ID) \
1555static ssize_t wacom_show_remote##SET_ID##_mode(struct kobject *kobj, \
1556 struct kobj_attribute *kattr, char *buf) \
1557{ \
1558 return wacom_show_remote_mode(kobj, kattr, buf, SET_ID); \
1559} \
1560static struct kobj_attribute remote##SET_ID##_mode_attr = { \
1561 .attr = {.name = "remote_mode", \
1562 .mode = DEV_ATTR_RO_PERM}, \
1563 .show = wacom_show_remote##SET_ID##_mode, \
1564}; \
1565static struct attribute *remote##SET_ID##_serial_attrs[] = { \
1566 &remote##SET_ID##_mode_attr.attr, \
1567 NULL \
1568}; \
1569static struct attribute_group remote##SET_ID##_serial_group = { \
1570 .name = NULL, \
1571 .attrs = remote##SET_ID##_serial_attrs, \
1572}
1573
1574DEVICE_EKR_ATTR_GROUP(0);
1575DEVICE_EKR_ATTR_GROUP(1);
1576DEVICE_EKR_ATTR_GROUP(2);
1577DEVICE_EKR_ATTR_GROUP(3);
1578DEVICE_EKR_ATTR_GROUP(4);
1579
e6f2813a
BT		 1580static int wacom_remote_create_attr_group(struct wacom *wacom, __u32 serial,
1581 int index)
72b236d6
AS		 1582{
1583 int error = 0;
83e6b40e 1584 struct wacom_remote *remote = wacom->remote;
72b236d6 1585
e7749f6e 1586 remote->remotes[index].group.name = devm_kasprintf(&wacom->hdev->dev,
83e6b40e
BT		 1587 GFP_KERNEL,
1588 "%d", serial);
e7749f6e 1589 if (!remote->remotes[index].group.name)
72b236d6 1590 return -ENOMEM;
72b236d6 1591
f9036bd4 1592 error = __wacom_devm_sysfs_create_group(wacom, remote->remote_dir,
e7749f6e 1593 &remote->remotes[index].group);
72b236d6 1594 if (error) {
e7749f6e 1595 remote->remotes[index].group.name = NULL;
72b236d6
AS		 1596 hid_err(wacom->hdev,
1597 "cannot create sysfs group err: %d\n", error);
72b236d6
AS		 1598 return error;
1599 }
1600
1601 return 0;
1602}
1603
72b236d6
AS		 1604static int wacom_cmd_unpair_remote(struct wacom *wacom, unsigned char selector)
1605{
1606 const size_t buf_size = 2;
1607 unsigned char *buf;
1608 int retval;
1609
1610 buf = kzalloc(buf_size, GFP_KERNEL);
1611 if (!buf)
1612 return -ENOMEM;
1613
1614 buf[0] = WAC_CMD_DELETE_PAIRING;
1615 buf[1] = selector;
1616
1617 retval = wacom_set_report(wacom->hdev, HID_OUTPUT_REPORT, buf,
1618 buf_size, WAC_CMD_RETRIES);
1619 kfree(buf);
1620
1621 return retval;
1622}
1623
1624static ssize_t wacom_store_unpair_remote(struct kobject *kobj,
1625 struct kobj_attribute *attr,
1626 const char *buf, size_t count)
1627{
1628 unsigned char selector = 0;
2cf83833 1629 struct device *dev = kobj_to_dev(kobj->parent);
ee79a8f8 1630 struct hid_device *hdev = to_hid_device(dev);
72b236d6
AS		 1631 struct wacom *wacom = hid_get_drvdata(hdev);
1632 int err;
1633
1634 if (!strncmp(buf, "*\n", 2)) {
1635 selector = WAC_CMD_UNPAIR_ALL;
1636 } else {
1637 hid_info(wacom->hdev, "remote: unrecognized unpair code: %s\n",
1638 buf);
1639 return -1;
1640 }
1641
1642 mutex_lock(&wacom->lock);
1643
1644 err = wacom_cmd_unpair_remote(wacom, selector);
1645 mutex_unlock(&wacom->lock);
1646
1647 return err < 0 ? err : count;
1648}
1649
1650static struct kobj_attribute unpair_remote_attr = {
1651 .attr = {.name = "unpair_remote", .mode = 0200},
1652 .store = wacom_store_unpair_remote,
1653};
1654
1655static const struct attribute *remote_unpair_attrs[] = {
1656 &unpair_remote_attr.attr,
1657 NULL
1658};
1659
83e6b40e
BT		 1660static void wacom_remotes_destroy(void *data)
1661{
1662 struct wacom *wacom = data;
1663 struct wacom_remote *remote = wacom->remote;
1664
1665 if (!remote)
1666 return;
1667
1668 kobject_put(remote->remote_dir);
1669 kfifo_free(&remote->remote_fifo);
1670 wacom->remote = NULL;
1671}
1672
1673static int wacom_initialize_remotes(struct wacom *wacom)
72b236d6
AS		 1674{
1675 int error = 0;
83e6b40e 1676 struct wacom_remote *remote;
72b236d6
AS		 1677 int i;
1678
1679 if (wacom->wacom_wac.features.type != REMOTE)
1680 return 0;
1681
83e6b40e
BT		 1682 remote = devm_kzalloc(&wacom->hdev->dev, sizeof(*wacom->remote),
1683 GFP_KERNEL);
1684 if (!remote)
1685 return -ENOMEM;
72b236d6 1686
83e6b40e
BT		 1687 wacom->remote = remote;
1688
1689 spin_lock_init(&remote->remote_lock);
1690
1691 error = kfifo_alloc(&remote->remote_fifo,
1692 5 * sizeof(struct wacom_remote_data),
1693 GFP_KERNEL);
1694 if (error) {
1695 hid_err(wacom->hdev, "failed allocating remote_fifo\n");
72b236d6 1696 return -ENOMEM;
83e6b40e 1697 }
72b236d6 1698
e7749f6e
BT		 1699 remote->remotes[0].group = remote0_serial_group;
1700 remote->remotes[1].group = remote1_serial_group;
1701 remote->remotes[2].group = remote2_serial_group;
1702 remote->remotes[3].group = remote3_serial_group;
1703 remote->remotes[4].group = remote4_serial_group;
83e6b40e
BT		 1704
1705 remote->remote_dir = kobject_create_and_add("wacom_remote",
1706 &wacom->hdev->dev.kobj);
1707 if (!remote->remote_dir)
1708 return -ENOMEM;
1709
1710 error = sysfs_create_files(remote->remote_dir, remote_unpair_attrs);
72b236d6
AS		 1711
1712 if (error) {
1713 hid_err(wacom->hdev,
1714 "cannot create sysfs group err: %d\n", error);
1715 return error;
1716 }
1717
1718 for (i = 0; i < WACOM_MAX_REMOTES; i++) {
a50aac71 1719 wacom->led.groups[i].select = WACOM_STATUS_UNKNOWN;
e7749f6e 1720 remote->remotes[i].serial = 0;
72b236d6
AS		 1721 }
1722
83e6b40e
BT		 1723 error = devm_add_action_or_reset(&wacom->hdev->dev,
1724 wacom_remotes_destroy, wacom);
1725 if (error)
1726 return error;
1727
72b236d6
AS		 1728 return 0;
1729}
1730
d2d13f18 1731static struct input_dev *wacom_allocate_input(struct wacom *wacom)
3aac0ef1
CB		 1732{
1733 struct input_dev *input_dev;
b6c79f2c 1734 struct hid_device *hdev = wacom->hdev;
3aac0ef1 1735 struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
3aac0ef1 1736
3dad188e 1737 input_dev = devm_input_allocate_device(&hdev->dev);
d2d13f18
BT		 1738 if (!input_dev)
1739 return NULL;
3aac0ef1 1740
2bdd163c 1741 input_dev->name = wacom_wac->features.name;
b6c79f2c
BT		 1742 input_dev->phys = hdev->phys;
1743 input_dev->dev.parent = &hdev->dev;
3aac0ef1
CB		 1744 input_dev->open = wacom_open;
1745 input_dev->close = wacom_close;
b6c79f2c
BT		 1746 input_dev->uniq = hdev->uniq;
1747 input_dev->id.bustype = hdev->bus;
1748 input_dev->id.vendor = hdev->vendor;
12969e3b 1749 input_dev->id.product = wacom_wac->pid ? wacom_wac->pid : hdev->product;
b6c79f2c 1750 input_dev->id.version = hdev->version;
3aac0ef1
CB		 1751 input_set_drvdata(input_dev, wacom);
1752
d2d13f18
BT		 1753 return input_dev;
1754}
1755
d9f2d203
JG		 1756static int wacom_allocate_inputs(struct wacom *wacom)
1757{
1758 struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1759
1760 wacom_wac->pen_input = wacom_allocate_input(wacom);
1761 wacom_wac->touch_input = wacom_allocate_input(wacom);
1762 wacom_wac->pad_input = wacom_allocate_input(wacom);
3dad188e
BT		 1763 if (!wacom_wac->pen_input ||
1764 !wacom_wac->touch_input ||
1765 !wacom_wac->pad_input)
d9f2d203 1766 return -ENOMEM;
d9f2d203 1767
2bdd163c 1768 wacom_wac->pen_input->name = wacom_wac->pen_name;
d9f2d203
JG		 1769 wacom_wac->touch_input->name = wacom_wac->touch_name;
1770 wacom_wac->pad_input->name = wacom_wac->pad_name;
1771
1772 return 0;
1773}
1774
2546dacd
BT		 1775static int wacom_register_inputs(struct wacom *wacom)
1776{
2a6cdbdd 1777 struct input_dev *pen_input_dev, *touch_input_dev, *pad_input_dev;
2546dacd 1778 struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
2636a3f2 1779 int error = 0;
2546dacd 1780
2a6cdbdd
JG		 1781 pen_input_dev = wacom_wac->pen_input;
1782 touch_input_dev = wacom_wac->touch_input;
2546dacd
BT		 1783 pad_input_dev = wacom_wac->pad_input;
1784
2a6cdbdd 1785 if (!pen_input_dev || !touch_input_dev || !pad_input_dev)
2546dacd
BT		 1786 return -EINVAL;
1787
2a6cdbdd
JG		 1788 error = wacom_setup_pen_input_capabilities(pen_input_dev, wacom_wac);
1789 if (error) {
1790 /* no pen in use on this interface */
1791 input_free_device(pen_input_dev);
1792 wacom_wac->pen_input = NULL;
1793 pen_input_dev = NULL;
1794 } else {
1795 error = input_register_device(pen_input_dev);
1796 if (error)
3dad188e 1797 goto fail;
2a6cdbdd
JG		 1798 }
1799
1800 error = wacom_setup_touch_input_capabilities(touch_input_dev, wacom_wac);
1801 if (error) {
1802 /* no touch in use on this interface */
1803 input_free_device(touch_input_dev);
1804 wacom_wac->touch_input = NULL;
1805 touch_input_dev = NULL;
1806 } else {
1807 error = input_register_device(touch_input_dev);
30ebc1ae 1808 if (error)
3dad188e 1809 goto fail;
30ebc1ae 1810 }
1963518b 1811
d2d13f18
BT		 1812 error = wacom_setup_pad_input_capabilities(pad_input_dev, wacom_wac);
1813 if (error) {
1814 /* no pad in use on this interface */
1815 input_free_device(pad_input_dev);
1816 wacom_wac->pad_input = NULL;
1817 pad_input_dev = NULL;
1818 } else {
1819 error = input_register_device(pad_input_dev);
1820 if (error)
3dad188e 1821 goto fail;
d2d13f18
BT		 1822 }
1823
1963518b 1824 return 0;
3aac0ef1 1825
3dad188e
BT		 1826fail:
1827 wacom_wac->pad_input = NULL;
2a6cdbdd 1828 wacom_wac->touch_input = NULL;
2a6cdbdd 1829 wacom_wac->pen_input = NULL;
3aac0ef1
CB		 1830 return error;
1831}
1832
0be01712
JG		 1833/*
1834 * Not all devices report physical dimensions from HID.
1835 * Compute the default from hardcoded logical dimension
1836 * and resolution before driver overwrites them.
1837 */
1838static void wacom_set_default_phy(struct wacom_features *features)
1839{
1840 if (features->x_resolution) {
1841 features->x_phy = (features->x_max * 100) /
1842 features->x_resolution;
1843 features->y_phy = (features->y_max * 100) /
1844 features->y_resolution;
1845 }
1846}
1847
1848static void wacom_calculate_res(struct wacom_features *features)
1849{
1850 /* set unit to "100th of a mm" for devices not reported by HID */
1851 if (!features->unit) {
1852 features->unit = 0x11;
1853 features->unitExpo = -3;
1854 }
1855
1856 features->x_resolution = wacom_calc_hid_res(features->x_max,
1857 features->x_phy,
1858 features->unit,
1859 features->unitExpo);
1860 features->y_resolution = wacom_calc_hid_res(features->y_max,
1861 features->y_phy,
1862 features->unit,
1863 features->unitExpo);
1864}
1865
fce9957d
JG		 1866void wacom_battery_work(struct work_struct *work)
1867{
d17d1f17 1868 struct wacom *wacom = container_of(work, struct wacom, battery_work);
fce9957d
JG		 1869
1870 if ((wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&
59d69bc8 1871 !wacom->battery.battery) {
fce9957d
JG		 1872 wacom_initialize_battery(wacom);
1873 }
1874 else if (!(wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&
59d69bc8 1875 wacom->battery.battery) {
fce9957d
JG		 1876 wacom_destroy_battery(wacom);
1877 }
1878}
1879
01c846f9
BT		 1880static size_t wacom_compute_pktlen(struct hid_device *hdev)
1881{
1882 struct hid_report_enum *report_enum;
1883 struct hid_report *report;
1884 size_t size = 0;
1885
1886 report_enum = hdev->report_enum + HID_INPUT_REPORT;
1887
1888 list_for_each_entry(report, &report_enum->report_list, list) {
dabb05c6 1889 size_t report_size = hid_report_len(report);
01c846f9
BT		 1890 if (report_size > size)
1891 size = report_size;
1892 }
1893
1894 return size;
1895}
1896
fd5f92b6 1897static void wacom_update_name(struct wacom *wacom, const char *suffix)
c24eab4e
PC		 1898{
1899 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1900 struct wacom_features *features = &wacom_wac->features;
44b5250b 1901 char name[WACOM_NAME_MAX];
c24eab4e
PC		 1902
1903 /* Generic devices name unspecified */
1904 if ((features->type == HID_GENERIC) && !strcmp("Wacom HID", features->name)) {
1905 if (strstr(wacom->hdev->name, "Wacom") ||
1906 strstr(wacom->hdev->name, "wacom") ||
1907 strstr(wacom->hdev->name, "WACOM")) {
1908 /* name is in HID descriptor, use it */
44b5250b 1909 strlcpy(name, wacom->hdev->name, sizeof(name));
c24eab4e
PC		 1910
1911 /* strip out excess whitespaces */
1912 while (1) {
44b5250b 1913 char *gap = strstr(name, " ");
c24eab4e
PC		 1914 if (gap == NULL)
1915 break;
1916 /* shift everything including the terminator */
1917 memmove(gap, gap+1, strlen(gap));
1918 }
1919 /* get rid of trailing whitespace */
44b5250b
JG		 1920 if (name[strlen(name)-1] == ' ')
1921 name[strlen(name)-1] = '\0';
c24eab4e
PC		 1922 } else {
1923 /* no meaningful name retrieved. use product ID */
44b5250b 1924 snprintf(name, sizeof(name),
c24eab4e
PC		 1925 "%s %X", features->name, wacom->hdev->product);
1926 }
1927 } else {
44b5250b 1928 strlcpy(name, features->name, sizeof(name));
c24eab4e
PC		 1929 }
1930
9956953e
BT		 1931 snprintf(wacom_wac->name, sizeof(wacom_wac->name), "%s%s",
1932 name, suffix);
1933
c24eab4e 1934 /* Append the device type to the name */
2a6cdbdd 1935 snprintf(wacom_wac->pen_name, sizeof(wacom_wac->pen_name),
fd5f92b6 1936 "%s%s Pen", name, suffix);
2a6cdbdd 1937 snprintf(wacom_wac->touch_name, sizeof(wacom_wac->touch_name),
fd5f92b6 1938 "%s%s Finger", name, suffix);
c24eab4e 1939 snprintf(wacom_wac->pad_name, sizeof(wacom_wac->pad_name),
fd5f92b6 1940 "%s%s Pad", name, suffix);
c24eab4e
PC		 1941}
1942
84dfbd7f
BT		 1943static void wacom_release_resources(struct wacom *wacom)
1944{
1945 struct hid_device *hdev = wacom->hdev;
1946
1947 if (!wacom->resources)
1948 return;
1949
1950 devres_release_group(&hdev->dev, wacom);
1951
1952 wacom->resources = false;
1953
1954 wacom->wacom_wac.pen_input = NULL;
1955 wacom->wacom_wac.touch_input = NULL;
1956 wacom->wacom_wac.pad_input = NULL;
1957}
1958
fd5f92b6 1959static int wacom_parse_and_register(struct wacom *wacom, bool wireless)
3bea733a 1960{
c58ac3a8
BT		 1961 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1962 struct wacom_features *features = &wacom_wac->features;
1963 struct hid_device *hdev = wacom->hdev;
e33da8a5 1964 int error;
7704ac93 1965 unsigned int connect_mask = HID_CONNECT_HIDRAW;
3bea733a 1966
01c846f9 1967 features->pktlen = wacom_compute_pktlen(hdev);
c58ac3a8
BT		 1968 if (features->pktlen > WACOM_PKGLEN_MAX)
1969 return -EINVAL;
3bea733a 1970
84dfbd7f
BT		 1971 if (!devres_open_group(&hdev->dev, wacom, GFP_KERNEL))
1972 return -ENOMEM;
1973
1974 wacom->resources = true;
1975
3f14a63a
JG		 1976 error = wacom_allocate_inputs(wacom);
1977 if (error)
3888b0d5 1978 goto fail;
494078b0 1979
8c97a765
BT		 1980 /*
1981 * Bamboo Pad has a generic hid handling for the Pen, and we switch it
1982 * into debug mode for the touch part.
1983 * We ignore the other interfaces.
1984 */
1985 if (features->type == BAMBOO_PAD) {
1986 if (features->pktlen == WACOM_PKGLEN_PENABLED) {
1987 features->type = HID_GENERIC;
1988 } else if ((features->pktlen != WACOM_PKGLEN_BPAD_TOUCH) &&
1989 (features->pktlen != WACOM_PKGLEN_BPAD_TOUCH_USB)) {
1990 error = -ENODEV;
3888b0d5 1991 goto fail;
8c97a765
BT		 1992 }
1993 }
1994
401d7d10
PC		 1995 /* set the default size in case we do not get them from hid */
1996 wacom_set_default_phy(features);
1997
f393ee2b 1998 /* Retrieve the physical and logical size for touch devices */
c669fb2b 1999 wacom_retrieve_hid_descriptor(hdev, features);
42f4f272 2000 wacom_setup_device_quirks(wacom);
042628ab 2001
aa86b18c
JG		 2002 if (features->device_type == WACOM_DEVICETYPE_NONE &&
2003 features->type != WIRELESS) {
8e116d31
JG		 2004 error = features->type == HID_GENERIC ? -ENODEV : 0;
2005
042628ab 2006 dev_warn(&hdev->dev, "Unknown device_type for '%s'. %s.",
8e116d31
JG		 2007 hdev->name,
2008 error ? "Ignoring" : "Assuming pen");
2009
2010 if (error)
3888b0d5 2011 goto fail;
042628ab 2012
aa86b18c 2013 features->device_type |= WACOM_DEVICETYPE_PEN;
042628ab
JG		 2014 }
2015
401d7d10
PC		 2016 wacom_calculate_res(features);
2017
fd5f92b6 2018 wacom_update_name(wacom, wireless ? " (WL)" : "");
4492efff 2019
f3586d2f
PC		 2020 error = wacom_add_shared_data(hdev);
2021 if (error)
3888b0d5 2022 goto fail;
49b764ae 2023
ccad85cc 2024 if (!(features->device_type & WACOM_DEVICETYPE_WL_MONITOR) &&
f81a1295
BT		 2025 (features->quirks & WACOM_QUIRK_BATTERY)) {
2026 error = wacom_initialize_battery(wacom);
2027 if (error)
3888b0d5 2028 goto fail;
f81a1295
BT		 2029 }
2030
3f14a63a
JG		 2031 error = wacom_register_inputs(wacom);
2032 if (error)
3888b0d5 2033 goto fail;
f81a1295 2034
b62f6465 2035 if (wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD) {
85d2c77b
BT		 2036 error = wacom_initialize_leds(wacom);
2037 if (error)
3888b0d5 2038 goto fail;
85d2c77b 2039
83e6b40e 2040 error = wacom_initialize_remotes(wacom);
b62f6465 2041 if (error)
3888b0d5 2042 goto fail;
b62f6465
BT		 2043 }
2044
7704ac93
BT		 2045 if (features->type == HID_GENERIC)
2046 connect_mask |= HID_CONNECT_DRIVER;
2047
29b47391 2048 /* Regular HID work starts now */
7704ac93 2049 error = hid_hw_start(hdev, connect_mask);
29b47391
BT		 2050 if (error) {
2051 hid_err(hdev, "hw start failed\n");
3888b0d5 2052 goto fail;
d3825d51 2053 }
961794a0 2054
fd5f92b6
BT		 2055 if (!wireless) {
2056 /* Note that if query fails it is not a hard failure */
2057 wacom_query_tablet_data(hdev, features);
2058 }
86e88f0e
JG		 2059
2060 /* touch only Bamboo doesn't support pen */
2061 if ((features->type == BAMBOO_TOUCH) &&
2062 (features->device_type & WACOM_DEVICETYPE_PEN)) {
2063 error = -ENODEV;
b62f6465 2064 goto fail_quirks;
86e88f0e
JG		 2065 }
2066
2067 /* pen only Bamboo neither support touch nor pad */
2068 if ((features->type == BAMBOO_PEN) &&
2069 ((features->device_type & WACOM_DEVICETYPE_TOUCH) ||
2070 (features->device_type & WACOM_DEVICETYPE_PAD))) {
2071 error = -ENODEV;
b62f6465 2072 goto fail_quirks;
86e88f0e
JG		 2073 }
2074
ccad85cc 2075 if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR)
29b47391
BT		 2076 error = hid_hw_open(hdev);
2077
eda01dab 2078 if ((wacom_wac->features.type == INTUOSHT ||
97f9afa4 2079 wacom_wac->features.type == INTUOSHT2) &&
eda01dab 2080 (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH)) {
97f9afa4
BT		 2081 wacom_wac->shared->type = wacom_wac->features.type;
2082 wacom_wac->shared->touch_input = wacom_wac->touch_input;
961794a0
PC		 2083 }
2084
84dfbd7f
BT		 2085 devres_close_group(&hdev->dev, wacom);
2086
3bea733a
PC		 2087 return 0;
2088
b62f6465 2089fail_quirks:
c58ac3a8 2090 hid_hw_stop(hdev);
3888b0d5 2091fail:
84dfbd7f 2092 wacom_release_resources(wacom);
c58ac3a8
BT		 2093 return error;
2094}
2095
a2f091af
BT		 2096static void wacom_wireless_work(struct work_struct *work)
2097{
d17d1f17 2098 struct wacom *wacom = container_of(work, struct wacom, wireless_work);
a2f091af
BT		 2099 struct usb_device *usbdev = wacom->usbdev;
2100 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2101 struct hid_device *hdev1, *hdev2;
2102 struct wacom *wacom1, *wacom2;
2103 struct wacom_wac *wacom_wac1, *wacom_wac2;
2104 int error;
2105
2106 /*
2107 * Regardless if this is a disconnect or a new tablet,
2108 * remove any existing input and battery devices.
2109 */
2110
2111 wacom_destroy_battery(wacom);
2112
2113 /* Stylus interface */
2114 hdev1 = usb_get_intfdata(usbdev->config->interface[1]);
2115 wacom1 = hid_get_drvdata(hdev1);
2116 wacom_wac1 = &(wacom1->wacom_wac);
84dfbd7f 2117 wacom_release_resources(wacom1);
a2f091af
BT		 2118
2119 /* Touch interface */
2120 hdev2 = usb_get_intfdata(usbdev->config->interface[2]);
2121 wacom2 = hid_get_drvdata(hdev2);
2122 wacom_wac2 = &(wacom2->wacom_wac);
84dfbd7f 2123 wacom_release_resources(wacom2);
a2f091af
BT		 2124
2125 if (wacom_wac->pid == 0) {
2126 hid_info(wacom->hdev, "wireless tablet disconnected\n");
a2f091af
BT		 2127 } else {
2128 const struct hid_device_id *id = wacom_ids;
2129
2130 hid_info(wacom->hdev, "wireless tablet connected with PID %x\n",
2131 wacom_wac->pid);
2132
2133 while (id->bus) {
2134 if (id->vendor == USB_VENDOR_ID_WACOM &&
2135 id->product == wacom_wac->pid)
2136 break;
2137 id++;
2138 }
2139
2140 if (!id->bus) {
2141 hid_info(wacom->hdev, "ignoring unknown PID.\n");
2142 return;
2143 }
2144
2145 /* Stylus interface */
2146 wacom_wac1->features =
2147 *((struct wacom_features *)id->driver_data);
fd5f92b6 2148
a2f091af 2149 wacom_wac1->pid = wacom_wac->pid;
fd5f92b6
BT		 2150 hid_hw_stop(hdev1);
2151 error = wacom_parse_and_register(wacom1, true);
a2f091af
BT		 2152 if (error)
2153 goto fail;
2154
2155 /* Touch interface */
2156 if (wacom_wac1->features.touch_max ||
2157 (wacom_wac1->features.type >= INTUOSHT &&
2158 wacom_wac1->features.type <= BAMBOO_PT)) {
2159 wacom_wac2->features =
2160 *((struct wacom_features *)id->driver_data);
a2f091af 2161 wacom_wac2->pid = wacom_wac->pid;
fd5f92b6
BT		 2162 hid_hw_stop(hdev2);
2163 error = wacom_parse_and_register(wacom2, true);
a2f091af
BT		 2164 if (error)
2165 goto fail;
a2f091af
BT		 2166 }
2167
9956953e
BT		 2168 strlcpy(wacom_wac->name, wacom_wac1->name,
2169 sizeof(wacom_wac->name));
a2f091af
BT		 2170 error = wacom_initialize_battery(wacom);
2171 if (error)
2172 goto fail;
2173 }
2174
2175 return;
2176
2177fail:
84dfbd7f 2178 wacom_release_resources(wacom1);
84dfbd7f 2179 wacom_release_resources(wacom2);
a2f091af
BT		 2180 return;
2181}
2182
04bfa27b
BT		 2183static void wacom_remote_destroy_one(struct wacom *wacom, unsigned int index)
2184{
2185 struct wacom_remote *remote = wacom->remote;
e7749f6e 2186 u32 serial = remote->remotes[index].serial;
04bfa27b 2187 int i;
7c35dc3c
BT		 2188 unsigned long flags;
2189
2190 spin_lock_irqsave(&remote->remote_lock, flags);
2191 remote->remotes[index].registered = false;
2192 spin_unlock_irqrestore(&remote->remote_lock, flags);
04bfa27b 2193
9f1015d4
BT		 2194 if (remote->remotes[index].battery.battery)
2195 devres_release_group(&wacom->hdev->dev,
2196 &remote->remotes[index].battery.bat_desc);
2197
e7749f6e
BT		 2198 if (remote->remotes[index].group.name)
2199 devres_release_group(&wacom->hdev->dev,
2200 &remote->remotes[index]);
04bfa27b
BT		 2201
2202 for (i = 0; i < WACOM_MAX_REMOTES; i++) {
e7749f6e
BT		 2203 if (remote->remotes[i].serial == serial) {
2204 remote->remotes[i].serial = 0;
2205 remote->remotes[i].group.name = NULL;
7c35dc3c 2206 remote->remotes[i].registered = false;
9f1015d4 2207 remote->remotes[i].battery.battery = NULL;
04bfa27b
BT		 2208 wacom->led.groups[i].select = WACOM_STATUS_UNKNOWN;
2209 }
2210 }
2211}
2212
2213static int wacom_remote_create_one(struct wacom *wacom, u32 serial,
2214 unsigned int index)
2215{
2216 struct wacom_remote *remote = wacom->remote;
f9036bd4 2217 struct device *dev = &wacom->hdev->dev;
04bfa27b
BT		 2218 int error, k;
2219
2220 /* A remote can pair more than once with an EKR,
2221 * check to make sure this serial isn't already paired.
2222 */
2223 for (k = 0; k < WACOM_MAX_REMOTES; k++) {
e7749f6e 2224 if (remote->remotes[k].serial == serial)
04bfa27b
BT		 2225 break;
2226 }
2227
2228 if (k < WACOM_MAX_REMOTES) {
e7749f6e 2229 remote->remotes[index].serial = serial;
04bfa27b
BT		 2230 return 0;
2231 }
2232
e7749f6e 2233 if (!devres_open_group(dev, &remote->remotes[index], GFP_KERNEL))
f9036bd4
BT		 2234 return -ENOMEM;
2235
04bfa27b
BT		 2236 error = wacom_remote_create_attr_group(wacom, serial, index);
2237 if (error)
f9036bd4 2238 goto fail;
04bfa27b 2239
7c35dc3c
BT		 2240 remote->remotes[index].input = wacom_allocate_input(wacom);
2241 if (!remote->remotes[index].input) {
2242 error = -ENOMEM;
2243 goto fail;
2244 }
2245 remote->remotes[index].input->uniq = remote->remotes[index].group.name;
2246 remote->remotes[index].input->name = wacom->wacom_wac.pad_name;
2247
2248 if (!remote->remotes[index].input->name) {
2249 error = -EINVAL;
2250 goto fail;
2251 }
2252
2253 error = wacom_setup_pad_input_capabilities(remote->remotes[index].input,
2254 &wacom->wacom_wac);
2255 if (error)
2256 goto fail;
2257
e7749f6e 2258 remote->remotes[index].serial = serial;
04bfa27b 2259
7c35dc3c
BT		 2260 error = input_register_device(remote->remotes[index].input);
2261 if (error)
2262 goto fail;
2263
97f5541f
BT		 2264 error = wacom_led_groups_alloc_and_register_one(
2265 &remote->remotes[index].input->dev,
2266 wacom, index, 3, true);
2267 if (error)
2268 goto fail;
2269
7c35dc3c
BT		 2270 remote->remotes[index].registered = true;
2271
e7749f6e 2272 devres_close_group(dev, &remote->remotes[index]);
04bfa27b 2273 return 0;
f9036bd4
BT		 2274
2275fail:
e7749f6e
BT		 2276 devres_release_group(dev, &remote->remotes[index]);
2277 remote->remotes[index].serial = 0;
f9036bd4 2278 return error;
04bfa27b
BT		 2279}
2280
9f1015d4
BT		 2281static int wacom_remote_attach_battery(struct wacom *wacom, int index)
2282{
2283 struct wacom_remote *remote = wacom->remote;
2284 int error;
2285
2286 if (!remote->remotes[index].registered)
2287 return 0;
2288
2289 if (remote->remotes[index].battery.battery)
2290 return 0;
2291
2292 if (wacom->led.groups[index].select == WACOM_STATUS_UNKNOWN)
2293 return 0;
2294
2295 error = __wacom_initialize_battery(wacom,
2296 &wacom->remote->remotes[index].battery);
2297 if (error)
2298 return error;
2299
2300 return 0;
2301}
2302
e6f2813a
BT		 2303static void wacom_remote_work(struct work_struct *work)
2304{
2305 struct wacom *wacom = container_of(work, struct wacom, remote_work);
83e6b40e 2306 struct wacom_remote *remote = wacom->remote;
e6f2813a
BT		 2307 struct wacom_remote_data data;
2308 unsigned long flags;
2309 unsigned int count;
2310 u32 serial;
04bfa27b 2311 int i;
e6f2813a 2312
83e6b40e 2313 spin_lock_irqsave(&remote->remote_lock, flags);
e6f2813a 2314
83e6b40e 2315 count = kfifo_out(&remote->remote_fifo, &data, sizeof(data));
e6f2813a
BT		 2316
2317 if (count != sizeof(data)) {
2318 hid_err(wacom->hdev,
2319 "workitem triggered without status available\n");
83e6b40e 2320 spin_unlock_irqrestore(&remote->remote_lock, flags);
e6f2813a
BT		 2321 return;
2322 }
2323
83e6b40e 2324 if (!kfifo_is_empty(&remote->remote_fifo))
e6f2813a
BT		 2325 wacom_schedule_work(&wacom->wacom_wac, WACOM_WORKER_REMOTE);
2326
83e6b40e 2327 spin_unlock_irqrestore(&remote->remote_lock, flags);
e6f2813a
BT		 2328
2329 for (i = 0; i < WACOM_MAX_REMOTES; i++) {
2330 serial = data.remote[i].serial;
2331 if (data.remote[i].connected) {
2332
9f1015d4
BT		 2333 if (remote->remotes[i].serial == serial) {
2334 wacom_remote_attach_battery(wacom, i);
e6f2813a 2335 continue;
9f1015d4 2336 }
e6f2813a 2337
e7749f6e 2338 if (remote->remotes[i].serial)
04bfa27b 2339 wacom_remote_destroy_one(wacom, i);
e6f2813a 2340
04bfa27b 2341 wacom_remote_create_one(wacom, serial, i);
e6f2813a 2342
e7749f6e 2343 } else if (remote->remotes[i].serial) {
04bfa27b 2344 wacom_remote_destroy_one(wacom, i);
e6f2813a
BT		 2345 }
2346 }
2347}
2348
c58ac3a8
BT		 2349static int wacom_probe(struct hid_device *hdev,
2350 const struct hid_device_id *id)
2351{
2352 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
2353 struct usb_device *dev = interface_to_usbdev(intf);
2354 struct wacom *wacom;
2355 struct wacom_wac *wacom_wac;
2356 struct wacom_features *features;
2357 int error;
2358
2359 if (!id->driver_data)
2360 return -EINVAL;
2361
2362 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
2363
2364 /* hid-core sets this quirk for the boot interface */
2365 hdev->quirks &= ~HID_QUIRK_NOGET;
2366
19b64330 2367 wacom = devm_kzalloc(&hdev->dev, sizeof(struct wacom), GFP_KERNEL);
c58ac3a8
BT		 2368 if (!wacom)
2369 return -ENOMEM;
2370
2371 hid_set_drvdata(hdev, wacom);
2372 wacom->hdev = hdev;
2373
2374 wacom_wac = &wacom->wacom_wac;
2375 wacom_wac->features = *((struct wacom_features *)id->driver_data);
2376 features = &wacom_wac->features;
2377
2378 if (features->check_for_hid_type && features->hid_type != hdev->type) {
2379 error = -ENODEV;
3888b0d5 2380 goto fail;
c58ac3a8
BT		 2381 }
2382
c6fa1aeb 2383 wacom_wac->hid_data.inputmode = -1;
326ea2a9 2384 wacom_wac->mode_report = -1;
c6fa1aeb 2385
c58ac3a8
BT		 2386 wacom->usbdev = dev;
2387 wacom->intf = intf;
2388 mutex_init(&wacom->lock);
d17d1f17
BT		 2389 INIT_WORK(&wacom->wireless_work, wacom_wireless_work);
2390 INIT_WORK(&wacom->battery_work, wacom_battery_work);
e6f2813a 2391 INIT_WORK(&wacom->remote_work, wacom_remote_work);
c58ac3a8
BT		 2392
2393 /* ask for the report descriptor to be loaded by HID */
2394 error = hid_parse(hdev);
2395 if (error) {
2396 hid_err(hdev, "parse failed\n");
3888b0d5 2397 goto fail;
c58ac3a8
BT		 2398 }
2399
fd5f92b6 2400 error = wacom_parse_and_register(wacom, false);
c58ac3a8 2401 if (error)
3888b0d5 2402 goto fail;
c58ac3a8
BT		 2403
2404 if (hdev->bus == BUS_BLUETOOTH) {
2405 error = device_create_file(&hdev->dev, &dev_attr_speed);
2406 if (error)
2407 hid_warn(hdev,
2408 "can't create sysfs speed attribute err: %d\n",
2409 error);
2410 }
2411
2412 return 0;
2413
3888b0d5 2414fail:
29b47391 2415 hid_set_drvdata(hdev, NULL);
5014186d 2416 return error;
3bea733a
PC		 2417}
2418
29b47391 2419static void wacom_remove(struct hid_device *hdev)
3bea733a 2420{
29b47391 2421 struct wacom *wacom = hid_get_drvdata(hdev);
f6205161
BT		 2422 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
2423 struct wacom_features *features = &wacom_wac->features;
2424
2425 if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR)
2426 hid_hw_close(hdev);
3bea733a 2427
29b47391 2428 hid_hw_stop(hdev);
e7224094 2429
d17d1f17
BT		 2430 cancel_work_sync(&wacom->wireless_work);
2431 cancel_work_sync(&wacom->battery_work);
e6f2813a 2432 cancel_work_sync(&wacom->remote_work);
f81a1295
BT		 2433 if (hdev->bus == BUS_BLUETOOTH)
2434 device_remove_file(&hdev->dev, &dev_attr_speed);
e7224094 2435
29b47391 2436 hid_set_drvdata(hdev, NULL);
e7224094
ON		 2437}
2438
41a74581 2439#ifdef CONFIG_PM
29b47391 2440static int wacom_resume(struct hid_device *hdev)
e7224094 2441{
29b47391 2442 struct wacom *wacom = hid_get_drvdata(hdev);
51269fe8 2443 struct wacom_features *features = &wacom->wacom_wac.features;
e7224094
ON		 2444
2445 mutex_lock(&wacom->lock);
38101475
PC		 2446
2447 /* switch to wacom mode first */
27b20a9d 2448 wacom_query_tablet_data(hdev, features);
5d7e7d47 2449 wacom_led_control(wacom);
38101475 2450
e7224094
ON		 2451 mutex_unlock(&wacom->lock);
2452
29b47391 2453 return 0;
e7224094
ON		 2454}
2455
29b47391 2456static int wacom_reset_resume(struct hid_device *hdev)
e7224094 2457{
29b47391 2458 return wacom_resume(hdev);
3bea733a 2459}
41a74581 2460#endif /* CONFIG_PM */
3bea733a 2461
29b47391 2462static struct hid_driver wacom_driver = {
3bea733a 2463 .name = "wacom",
b036f6fb 2464 .id_table = wacom_ids,
3bea733a 2465 .probe = wacom_probe,
29b47391 2466 .remove = wacom_remove,
7704ac93 2467 .report = wacom_wac_report,
29b47391 2468#ifdef CONFIG_PM
e7224094
ON		 2469 .resume = wacom_resume,
2470 .reset_resume = wacom_reset_resume,
29b47391
BT		 2471#endif
2472 .raw_event = wacom_raw_event,
3bea733a 2473};
29b47391 2474module_hid_driver(wacom_driver);
f2e0a7d4
BT		 2475
2476MODULE_VERSION(DRIVER_VERSION);
2477MODULE_AUTHOR(DRIVER_AUTHOR);
2478MODULE_DESCRIPTION(DRIVER_DESC);
2479MODULE_LICENSE(DRIVER_LICENSE);
Linux kernel - Deliverables
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