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fb: adv7393: off by one in probe function
[deliverable/linux.git] / drivers / hid / wacom_sys.c
1 /*
2 * drivers/input/tablet/wacom_sys.c
3 *
4 * USB Wacom tablet support - system specific code
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
14 #include "wacom_wac.h"
15 #include "wacom.h"
16 #include <linux/input/mt.h>
17
18 #define WAC_MSG_RETRIES 5
19
20 #define WAC_CMD_WL_LED_CONTROL 0x03
21 #define WAC_CMD_LED_CONTROL 0x20
22 #define WAC_CMD_ICON_START 0x21
23 #define WAC_CMD_ICON_XFER 0x23
24 #define WAC_CMD_ICON_BT_XFER 0x26
25 #define WAC_CMD_RETRIES 10
26 #define WAC_CMD_DELETE_PAIRING 0x20
27 #define WAC_CMD_UNPAIR_ALL 0xFF
28 #define WAC_REMOTE_SERIAL_MAX_STRLEN 9
29
30 #define DEV_ATTR_RW_PERM (S_IRUGO | S_IWUSR | S_IWGRP)
31 #define DEV_ATTR_WO_PERM (S_IWUSR | S_IWGRP)
32 #define DEV_ATTR_RO_PERM (S_IRUSR | S_IRGRP)
33
34 static int wacom_get_report(struct hid_device *hdev, u8 type, u8 *buf,
35 size_t size, unsigned int retries)
36 {
37 int retval;
38
39 do {
40 retval = hid_hw_raw_request(hdev, buf[0], buf, size, type,
41 HID_REQ_GET_REPORT);
42 } while ((retval == -ETIMEDOUT || retval == -EAGAIN) && --retries);
43
44 if (retval < 0)
45 hid_err(hdev, "wacom_get_report: ran out of retries "
46 "(last error = %d)\n", retval);
47
48 return retval;
49 }
50
51 static int wacom_set_report(struct hid_device *hdev, u8 type, u8 *buf,
52 size_t size, unsigned int retries)
53 {
54 int retval;
55
56 do {
57 retval = hid_hw_raw_request(hdev, buf[0], buf, size, type,
58 HID_REQ_SET_REPORT);
59 } while ((retval == -ETIMEDOUT || retval == -EAGAIN) && --retries);
60
61 if (retval < 0)
62 hid_err(hdev, "wacom_set_report: ran out of retries "
63 "(last error = %d)\n", retval);
64
65 return retval;
66 }
67
68 static int wacom_raw_event(struct hid_device *hdev, struct hid_report *report,
69 u8 *raw_data, int size)
70 {
71 struct wacom *wacom = hid_get_drvdata(hdev);
72
73 if (size > WACOM_PKGLEN_MAX)
74 return 1;
75
76 memcpy(wacom->wacom_wac.data, raw_data, size);
77
78 wacom_wac_irq(&wacom->wacom_wac, size);
79
80 return 0;
81 }
82
83 static int wacom_open(struct input_dev *dev)
84 {
85 struct wacom *wacom = input_get_drvdata(dev);
86
87 return hid_hw_open(wacom->hdev);
88 }
89
90 static void wacom_close(struct input_dev *dev)
91 {
92 struct wacom *wacom = input_get_drvdata(dev);
93
94 hid_hw_close(wacom->hdev);
95 }
96
97 /*
98 * Calculate the resolution of the X or Y axis using hidinput_calc_abs_res.
99 */
100 static int wacom_calc_hid_res(int logical_extents, int physical_extents,
101 unsigned unit, int exponent)
102 {
103 struct hid_field field = {
104 .logical_maximum = logical_extents,
105 .physical_maximum = physical_extents,
106 .unit = unit,
107 .unit_exponent = exponent,
108 };
109
110 return hidinput_calc_abs_res(&field, ABS_X);
111 }
112
113 static void wacom_feature_mapping(struct hid_device *hdev,
114 struct hid_field *field, struct hid_usage *usage)
115 {
116 struct wacom *wacom = hid_get_drvdata(hdev);
117 struct wacom_features *features = &wacom->wacom_wac.features;
118 struct hid_data *hid_data = &wacom->wacom_wac.hid_data;
119 u8 *data;
120 int ret;
121
122 switch (usage->hid) {
123 case HID_DG_CONTACTMAX:
124 /* leave touch_max as is if predefined */
125 if (!features->touch_max) {
126 /* read manually */
127 data = kzalloc(2, GFP_KERNEL);
128 if (!data)
129 break;
130 data[0] = field->report->id;
131 ret = wacom_get_report(hdev, HID_FEATURE_REPORT,
132 data, 2, WAC_CMD_RETRIES);
133 if (ret == 2) {
134 features->touch_max = data[1];
135 } else {
136 features->touch_max = 16;
137 hid_warn(hdev, "wacom_feature_mapping: "
138 "could not get HID_DG_CONTACTMAX, "
139 "defaulting to %d\n",
140 features->touch_max);
141 }
142 kfree(data);
143 }
144 break;
145 case HID_DG_INPUTMODE:
146 /* Ignore if value index is out of bounds. */
147 if (usage->usage_index >= field->report_count) {
148 dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n");
149 break;
150 }
151
152 hid_data->inputmode = field->report->id;
153 hid_data->inputmode_index = usage->usage_index;
154 break;
155
156 case HID_UP_DIGITIZER:
157 if (field->report->id == 0x0B &&
158 (field->application == WACOM_G9_DIGITIZER ||
159 field->application == WACOM_G11_DIGITIZER)) {
160 wacom->wacom_wac.mode_report = field->report->id;
161 wacom->wacom_wac.mode_value = 0;
162 }
163 break;
164
165 case WACOM_G9_PAGE:
166 case WACOM_G11_PAGE:
167 if (field->report->id == 0x03 &&
168 (field->application == WACOM_G9_TOUCHSCREEN ||
169 field->application == WACOM_G11_TOUCHSCREEN)) {
170 wacom->wacom_wac.mode_report = field->report->id;
171 wacom->wacom_wac.mode_value = 0;
172 }
173 break;
174 }
175 }
176
177 /*
178 * Interface Descriptor of wacom devices can be incomplete and
179 * inconsistent so wacom_features table is used to store stylus
180 * device's packet lengths, various maximum values, and tablet
181 * resolution based on product ID's.
182 *
183 * For devices that contain 2 interfaces, wacom_features table is
184 * inaccurate for the touch interface. Since the Interface Descriptor
185 * for touch interfaces has pretty complete data, this function exists
186 * to query tablet for this missing information instead of hard coding in
187 * an additional table.
188 *
189 * A typical Interface Descriptor for a stylus will contain a
190 * boot mouse application collection that is not of interest and this
191 * function will ignore it.
192 *
193 * It also contains a digitizer application collection that also is not
194 * of interest since any information it contains would be duplicate
195 * of what is in wacom_features. Usually it defines a report of an array
196 * of bytes that could be used as max length of the stylus packet returned.
197 * If it happens to define a Digitizer-Stylus Physical Collection then
198 * the X and Y logical values contain valid data but it is ignored.
199 *
200 * A typical Interface Descriptor for a touch interface will contain a
201 * Digitizer-Finger Physical Collection which will define both logical
202 * X/Y maximum as well as the physical size of tablet. Since touch
203 * interfaces haven't supported pressure or distance, this is enough
204 * information to override invalid values in the wacom_features table.
205 *
206 * Intuos5 touch interface and 3rd gen Bamboo Touch do not contain useful
207 * data. We deal with them after returning from this function.
208 */
209 static void wacom_usage_mapping(struct hid_device *hdev,
210 struct hid_field *field, struct hid_usage *usage)
211 {
212 struct wacom *wacom = hid_get_drvdata(hdev);
213 struct wacom_features *features = &wacom->wacom_wac.features;
214 bool finger = WACOM_FINGER_FIELD(field);
215 bool pen = WACOM_PEN_FIELD(field);
216
217 /*
218 * Requiring Stylus Usage will ignore boot mouse
219 * X/Y values and some cases of invalid Digitizer X/Y
220 * values commonly reported.
221 */
222 if (pen)
223 features->device_type |= WACOM_DEVICETYPE_PEN;
224 else if (finger)
225 features->device_type |= WACOM_DEVICETYPE_TOUCH;
226 else
227 return;
228
229 /*
230 * Bamboo models do not support HID_DG_CONTACTMAX.
231 * And, Bamboo Pen only descriptor contains touch.
232 */
233 if (features->type > BAMBOO_PT) {
234 /* ISDv4 touch devices at least supports one touch point */
235 if (finger && !features->touch_max)
236 features->touch_max = 1;
237 }
238
239 switch (usage->hid) {
240 case HID_GD_X:
241 features->x_max = field->logical_maximum;
242 if (finger) {
243 features->x_phy = field->physical_maximum;
244 if ((features->type != BAMBOO_PT) &&
245 (features->type != BAMBOO_TOUCH)) {
246 features->unit = field->unit;
247 features->unitExpo = field->unit_exponent;
248 }
249 }
250 break;
251 case HID_GD_Y:
252 features->y_max = field->logical_maximum;
253 if (finger) {
254 features->y_phy = field->physical_maximum;
255 if ((features->type != BAMBOO_PT) &&
256 (features->type != BAMBOO_TOUCH)) {
257 features->unit = field->unit;
258 features->unitExpo = field->unit_exponent;
259 }
260 }
261 break;
262 case HID_DG_TIPPRESSURE:
263 if (pen)
264 features->pressure_max = field->logical_maximum;
265 break;
266 }
267
268 if (features->type == HID_GENERIC)
269 wacom_wac_usage_mapping(hdev, field, usage);
270 }
271
272 static void wacom_post_parse_hid(struct hid_device *hdev,
273 struct wacom_features *features)
274 {
275 struct wacom *wacom = hid_get_drvdata(hdev);
276 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
277
278 if (features->type == HID_GENERIC) {
279 /* Any last-minute generic device setup */
280 if (features->touch_max > 1) {
281 input_mt_init_slots(wacom_wac->touch_input, wacom_wac->features.touch_max,
282 INPUT_MT_DIRECT);
283 }
284 }
285 }
286
287 static void wacom_parse_hid(struct hid_device *hdev,
288 struct wacom_features *features)
289 {
290 struct hid_report_enum *rep_enum;
291 struct hid_report *hreport;
292 int i, j;
293
294 /* check features first */
295 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT];
296 list_for_each_entry(hreport, &rep_enum->report_list, list) {
297 for (i = 0; i < hreport->maxfield; i++) {
298 /* Ignore if report count is out of bounds. */
299 if (hreport->field[i]->report_count < 1)
300 continue;
301
302 for (j = 0; j < hreport->field[i]->maxusage; j++) {
303 wacom_feature_mapping(hdev, hreport->field[i],
304 hreport->field[i]->usage + j);
305 }
306 }
307 }
308
309 /* now check the input usages */
310 rep_enum = &hdev->report_enum[HID_INPUT_REPORT];
311 list_for_each_entry(hreport, &rep_enum->report_list, list) {
312
313 if (!hreport->maxfield)
314 continue;
315
316 for (i = 0; i < hreport->maxfield; i++)
317 for (j = 0; j < hreport->field[i]->maxusage; j++)
318 wacom_usage_mapping(hdev, hreport->field[i],
319 hreport->field[i]->usage + j);
320 }
321
322 wacom_post_parse_hid(hdev, features);
323 }
324
325 static int wacom_hid_set_device_mode(struct hid_device *hdev)
326 {
327 struct wacom *wacom = hid_get_drvdata(hdev);
328 struct hid_data *hid_data = &wacom->wacom_wac.hid_data;
329 struct hid_report *r;
330 struct hid_report_enum *re;
331
332 if (hid_data->inputmode < 0)
333 return 0;
334
335 re = &(hdev->report_enum[HID_FEATURE_REPORT]);
336 r = re->report_id_hash[hid_data->inputmode];
337 if (r) {
338 r->field[0]->value[hid_data->inputmode_index] = 2;
339 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
340 }
341 return 0;
342 }
343
344 static int wacom_set_device_mode(struct hid_device *hdev,
345 struct wacom_wac *wacom_wac)
346 {
347 u8 *rep_data;
348 struct hid_report *r;
349 struct hid_report_enum *re;
350 int length;
351 int error = -ENOMEM, limit = 0;
352
353 if (wacom_wac->mode_report < 0)
354 return 0;
355
356 re = &(hdev->report_enum[HID_FEATURE_REPORT]);
357 r = re->report_id_hash[wacom_wac->mode_report];
358 if (!r)
359 return -EINVAL;
360
361 rep_data = hid_alloc_report_buf(r, GFP_KERNEL);
362 if (!rep_data)
363 return -ENOMEM;
364
365 length = hid_report_len(r);
366
367 do {
368 rep_data[0] = wacom_wac->mode_report;
369 rep_data[1] = wacom_wac->mode_value;
370
371 error = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data,
372 length, 1);
373 if (error >= 0)
374 error = wacom_get_report(hdev, HID_FEATURE_REPORT,
375 rep_data, length, 1);
376 } while (error >= 0 &&
377 rep_data[1] != wacom_wac->mode_report &&
378 limit++ < WAC_MSG_RETRIES);
379
380 kfree(rep_data);
381
382 return error < 0 ? error : 0;
383 }
384
385 static int wacom_bt_query_tablet_data(struct hid_device *hdev, u8 speed,
386 struct wacom_features *features)
387 {
388 struct wacom *wacom = hid_get_drvdata(hdev);
389 int ret;
390 u8 rep_data[2];
391
392 switch (features->type) {
393 case GRAPHIRE_BT:
394 rep_data[0] = 0x03;
395 rep_data[1] = 0x00;
396 ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2,
397 3);
398
399 if (ret >= 0) {
400 rep_data[0] = speed == 0 ? 0x05 : 0x06;
401 rep_data[1] = 0x00;
402
403 ret = wacom_set_report(hdev, HID_FEATURE_REPORT,
404 rep_data, 2, 3);
405
406 if (ret >= 0) {
407 wacom->wacom_wac.bt_high_speed = speed;
408 return 0;
409 }
410 }
411
412 /*
413 * Note that if the raw queries fail, it's not a hard failure
414 * and it is safe to continue
415 */
416 hid_warn(hdev, "failed to poke device, command %d, err %d\n",
417 rep_data[0], ret);
418 break;
419 case INTUOS4WL:
420 if (speed == 1)
421 wacom->wacom_wac.bt_features &= ~0x20;
422 else
423 wacom->wacom_wac.bt_features |= 0x20;
424
425 rep_data[0] = 0x03;
426 rep_data[1] = wacom->wacom_wac.bt_features;
427
428 ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2,
429 1);
430 if (ret >= 0)
431 wacom->wacom_wac.bt_high_speed = speed;
432 break;
433 }
434
435 return 0;
436 }
437
438 /*
439 * Switch the tablet into its most-capable mode. Wacom tablets are
440 * typically configured to power-up in a mode which sends mouse-like
441 * reports to the OS. To get absolute position, pressure data, etc.
442 * from the tablet, it is necessary to switch the tablet out of this
443 * mode and into one which sends the full range of tablet data.
444 */
445 static int wacom_query_tablet_data(struct hid_device *hdev,
446 struct wacom_features *features)
447 {
448 struct wacom *wacom = hid_get_drvdata(hdev);
449 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
450
451 if (hdev->bus == BUS_BLUETOOTH)
452 return wacom_bt_query_tablet_data(hdev, 1, features);
453
454 if (features->type != HID_GENERIC) {
455 if (features->device_type & WACOM_DEVICETYPE_TOUCH) {
456 if (features->type > TABLETPC) {
457 /* MT Tablet PC touch */
458 wacom_wac->mode_report = 3;
459 wacom_wac->mode_value = 4;
460 } else if (features->type == WACOM_24HDT) {
461 wacom_wac->mode_report = 18;
462 wacom_wac->mode_value = 2;
463 } else if (features->type == WACOM_27QHDT) {
464 wacom_wac->mode_report = 131;
465 wacom_wac->mode_value = 2;
466 } else if (features->type == BAMBOO_PAD) {
467 wacom_wac->mode_report = 2;
468 wacom_wac->mode_value = 2;
469 }
470 } else if (features->device_type & WACOM_DEVICETYPE_PEN) {
471 if (features->type <= BAMBOO_PT) {
472 wacom_wac->mode_report = 2;
473 wacom_wac->mode_value = 2;
474 }
475 }
476 }
477
478 wacom_set_device_mode(hdev, wacom_wac);
479
480 if (features->type == HID_GENERIC)
481 return wacom_hid_set_device_mode(hdev);
482
483 return 0;
484 }
485
486 static void wacom_retrieve_hid_descriptor(struct hid_device *hdev,
487 struct wacom_features *features)
488 {
489 struct wacom *wacom = hid_get_drvdata(hdev);
490 struct usb_interface *intf = wacom->intf;
491
492 /* default features */
493 features->x_fuzz = 4;
494 features->y_fuzz = 4;
495 features->pressure_fuzz = 0;
496 features->distance_fuzz = 1;
497 features->tilt_fuzz = 1;
498
499 /*
500 * The wireless device HID is basic and layout conflicts with
501 * other tablets (monitor and touch interface can look like pen).
502 * Skip the query for this type and modify defaults based on
503 * interface number.
504 */
505 if (features->type == WIRELESS) {
506 if (intf->cur_altsetting->desc.bInterfaceNumber == 0)
507 features->device_type = WACOM_DEVICETYPE_WL_MONITOR;
508 else
509 features->device_type = WACOM_DEVICETYPE_NONE;
510 return;
511 }
512
513 wacom_parse_hid(hdev, features);
514 }
515
516 struct wacom_hdev_data {
517 struct list_head list;
518 struct kref kref;
519 struct hid_device *dev;
520 struct wacom_shared shared;
521 };
522
523 static LIST_HEAD(wacom_udev_list);
524 static DEFINE_MUTEX(wacom_udev_list_lock);
525
526 static bool wacom_are_sibling(struct hid_device *hdev,
527 struct hid_device *sibling)
528 {
529 struct wacom *wacom = hid_get_drvdata(hdev);
530 struct wacom_features *features = &wacom->wacom_wac.features;
531 int vid = features->oVid;
532 int pid = features->oPid;
533 int n1,n2;
534
535 if (vid == 0 && pid == 0) {
536 vid = hdev->vendor;
537 pid = hdev->product;
538 }
539
540 if (vid != sibling->vendor || pid != sibling->product)
541 return false;
542
543 /* Compare the physical path. */
544 n1 = strrchr(hdev->phys, '.') - hdev->phys;
545 n2 = strrchr(sibling->phys, '.') - sibling->phys;
546 if (n1 != n2 || n1 <= 0 || n2 <= 0)
547 return false;
548
549 return !strncmp(hdev->phys, sibling->phys, n1);
550 }
551
552 static struct wacom_hdev_data *wacom_get_hdev_data(struct hid_device *hdev)
553 {
554 struct wacom_hdev_data *data;
555
556 list_for_each_entry(data, &wacom_udev_list, list) {
557 if (wacom_are_sibling(hdev, data->dev)) {
558 kref_get(&data->kref);
559 return data;
560 }
561 }
562
563 return NULL;
564 }
565
566 static int wacom_add_shared_data(struct hid_device *hdev)
567 {
568 struct wacom *wacom = hid_get_drvdata(hdev);
569 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
570 struct wacom_hdev_data *data;
571 int retval = 0;
572
573 mutex_lock(&wacom_udev_list_lock);
574
575 data = wacom_get_hdev_data(hdev);
576 if (!data) {
577 data = kzalloc(sizeof(struct wacom_hdev_data), GFP_KERNEL);
578 if (!data) {
579 retval = -ENOMEM;
580 goto out;
581 }
582
583 kref_init(&data->kref);
584 data->dev = hdev;
585 list_add_tail(&data->list, &wacom_udev_list);
586 }
587
588 wacom_wac->shared = &data->shared;
589
590 if (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH)
591 wacom_wac->shared->touch = hdev;
592 else if (wacom_wac->features.device_type & WACOM_DEVICETYPE_PEN)
593 wacom_wac->shared->pen = hdev;
594
595 out:
596 mutex_unlock(&wacom_udev_list_lock);
597 return retval;
598 }
599
600 static void wacom_release_shared_data(struct kref *kref)
601 {
602 struct wacom_hdev_data *data =
603 container_of(kref, struct wacom_hdev_data, kref);
604
605 mutex_lock(&wacom_udev_list_lock);
606 list_del(&data->list);
607 mutex_unlock(&wacom_udev_list_lock);
608
609 kfree(data);
610 }
611
612 static void wacom_remove_shared_data(struct wacom *wacom)
613 {
614 struct wacom_hdev_data *data;
615 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
616
617 if (wacom_wac->shared) {
618 data = container_of(wacom_wac->shared, struct wacom_hdev_data,
619 shared);
620
621 if (wacom_wac->shared->touch == wacom->hdev)
622 wacom_wac->shared->touch = NULL;
623 else if (wacom_wac->shared->pen == wacom->hdev)
624 wacom_wac->shared->pen = NULL;
625
626 kref_put(&data->kref, wacom_release_shared_data);
627 wacom_wac->shared = NULL;
628 }
629 }
630
631 static int wacom_led_control(struct wacom *wacom)
632 {
633 unsigned char *buf;
634 int retval;
635 unsigned char report_id = WAC_CMD_LED_CONTROL;
636 int buf_size = 9;
637
638 if (wacom->wacom_wac.pid) { /* wireless connected */
639 report_id = WAC_CMD_WL_LED_CONTROL;
640 buf_size = 13;
641 }
642 buf = kzalloc(buf_size, GFP_KERNEL);
643 if (!buf)
644 return -ENOMEM;
645
646 if (wacom->wacom_wac.features.type >= INTUOS5S &&
647 wacom->wacom_wac.features.type <= INTUOSPL) {
648 /*
649 * Touch Ring and crop mark LED luminance may take on
650 * one of four values:
651 * 0 = Low; 1 = Medium; 2 = High; 3 = Off
652 */
653 int ring_led = wacom->led.select[0] & 0x03;
654 int ring_lum = (((wacom->led.llv & 0x60) >> 5) - 1) & 0x03;
655 int crop_lum = 0;
656 unsigned char led_bits = (crop_lum << 4) | (ring_lum << 2) | (ring_led);
657
658 buf[0] = report_id;
659 if (wacom->wacom_wac.pid) {
660 wacom_get_report(wacom->hdev, HID_FEATURE_REPORT,
661 buf, buf_size, WAC_CMD_RETRIES);
662 buf[0] = report_id;
663 buf[4] = led_bits;
664 } else
665 buf[1] = led_bits;
666 }
667 else {
668 int led = wacom->led.select[0] | 0x4;
669
670 if (wacom->wacom_wac.features.type == WACOM_21UX2 ||
671 wacom->wacom_wac.features.type == WACOM_24HD)
672 led |= (wacom->led.select[1] << 4) | 0x40;
673
674 buf[0] = report_id;
675 buf[1] = led;
676 buf[2] = wacom->led.llv;
677 buf[3] = wacom->led.hlv;
678 buf[4] = wacom->led.img_lum;
679 }
680
681 retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, buf_size,
682 WAC_CMD_RETRIES);
683 kfree(buf);
684
685 return retval;
686 }
687
688 static int wacom_led_putimage(struct wacom *wacom, int button_id, u8 xfer_id,
689 const unsigned len, const void *img)
690 {
691 unsigned char *buf;
692 int i, retval;
693 const unsigned chunk_len = len / 4; /* 4 chunks are needed to be sent */
694
695 buf = kzalloc(chunk_len + 3 , GFP_KERNEL);
696 if (!buf)
697 return -ENOMEM;
698
699 /* Send 'start' command */
700 buf[0] = WAC_CMD_ICON_START;
701 buf[1] = 1;
702 retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
703 WAC_CMD_RETRIES);
704 if (retval < 0)
705 goto out;
706
707 buf[0] = xfer_id;
708 buf[1] = button_id & 0x07;
709 for (i = 0; i < 4; i++) {
710 buf[2] = i;
711 memcpy(buf + 3, img + i * chunk_len, chunk_len);
712
713 retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT,
714 buf, chunk_len + 3, WAC_CMD_RETRIES);
715 if (retval < 0)
716 break;
717 }
718
719 /* Send 'stop' */
720 buf[0] = WAC_CMD_ICON_START;
721 buf[1] = 0;
722 wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
723 WAC_CMD_RETRIES);
724
725 out:
726 kfree(buf);
727 return retval;
728 }
729
730 static ssize_t wacom_led_select_store(struct device *dev, int set_id,
731 const char *buf, size_t count)
732 {
733 struct hid_device *hdev = to_hid_device(dev);
734 struct wacom *wacom = hid_get_drvdata(hdev);
735 unsigned int id;
736 int err;
737
738 err = kstrtouint(buf, 10, &id);
739 if (err)
740 return err;
741
742 mutex_lock(&wacom->lock);
743
744 wacom->led.select[set_id] = id & 0x3;
745 err = wacom_led_control(wacom);
746
747 mutex_unlock(&wacom->lock);
748
749 return err < 0 ? err : count;
750 }
751
752 #define DEVICE_LED_SELECT_ATTR(SET_ID) \
753 static ssize_t wacom_led##SET_ID##_select_store(struct device *dev, \
754 struct device_attribute *attr, const char *buf, size_t count) \
755 { \
756 return wacom_led_select_store(dev, SET_ID, buf, count); \
757 } \
758 static ssize_t wacom_led##SET_ID##_select_show(struct device *dev, \
759 struct device_attribute *attr, char *buf) \
760 { \
761 struct hid_device *hdev = to_hid_device(dev);\
762 struct wacom *wacom = hid_get_drvdata(hdev); \
763 return scnprintf(buf, PAGE_SIZE, "%d\n", \
764 wacom->led.select[SET_ID]); \
765 } \
766 static DEVICE_ATTR(status_led##SET_ID##_select, DEV_ATTR_RW_PERM, \
767 wacom_led##SET_ID##_select_show, \
768 wacom_led##SET_ID##_select_store)
769
770 DEVICE_LED_SELECT_ATTR(0);
771 DEVICE_LED_SELECT_ATTR(1);
772
773 static ssize_t wacom_luminance_store(struct wacom *wacom, u8 *dest,
774 const char *buf, size_t count)
775 {
776 unsigned int value;
777 int err;
778
779 err = kstrtouint(buf, 10, &value);
780 if (err)
781 return err;
782
783 mutex_lock(&wacom->lock);
784
785 *dest = value & 0x7f;
786 err = wacom_led_control(wacom);
787
788 mutex_unlock(&wacom->lock);
789
790 return err < 0 ? err : count;
791 }
792
793 #define DEVICE_LUMINANCE_ATTR(name, field) \
794 static ssize_t wacom_##name##_luminance_store(struct device *dev, \
795 struct device_attribute *attr, const char *buf, size_t count) \
796 { \
797 struct hid_device *hdev = to_hid_device(dev);\
798 struct wacom *wacom = hid_get_drvdata(hdev); \
799 \
800 return wacom_luminance_store(wacom, &wacom->led.field, \
801 buf, count); \
802 } \
803 static ssize_t wacom_##name##_luminance_show(struct device *dev, \
804 struct device_attribute *attr, char *buf) \
805 { \
806 struct wacom *wacom = dev_get_drvdata(dev); \
807 return scnprintf(buf, PAGE_SIZE, "%d\n", wacom->led.field); \
808 } \
809 static DEVICE_ATTR(name##_luminance, DEV_ATTR_RW_PERM, \
810 wacom_##name##_luminance_show, \
811 wacom_##name##_luminance_store)
812
813 DEVICE_LUMINANCE_ATTR(status0, llv);
814 DEVICE_LUMINANCE_ATTR(status1, hlv);
815 DEVICE_LUMINANCE_ATTR(buttons, img_lum);
816
817 static ssize_t wacom_button_image_store(struct device *dev, int button_id,
818 const char *buf, size_t count)
819 {
820 struct hid_device *hdev = to_hid_device(dev);
821 struct wacom *wacom = hid_get_drvdata(hdev);
822 int err;
823 unsigned len;
824 u8 xfer_id;
825
826 if (hdev->bus == BUS_BLUETOOTH) {
827 len = 256;
828 xfer_id = WAC_CMD_ICON_BT_XFER;
829 } else {
830 len = 1024;
831 xfer_id = WAC_CMD_ICON_XFER;
832 }
833
834 if (count != len)
835 return -EINVAL;
836
837 mutex_lock(&wacom->lock);
838
839 err = wacom_led_putimage(wacom, button_id, xfer_id, len, buf);
840
841 mutex_unlock(&wacom->lock);
842
843 return err < 0 ? err : count;
844 }
845
846 #define DEVICE_BTNIMG_ATTR(BUTTON_ID) \
847 static ssize_t wacom_btnimg##BUTTON_ID##_store(struct device *dev, \
848 struct device_attribute *attr, const char *buf, size_t count) \
849 { \
850 return wacom_button_image_store(dev, BUTTON_ID, buf, count); \
851 } \
852 static DEVICE_ATTR(button##BUTTON_ID##_rawimg, DEV_ATTR_WO_PERM, \
853 NULL, wacom_btnimg##BUTTON_ID##_store)
854
855 DEVICE_BTNIMG_ATTR(0);
856 DEVICE_BTNIMG_ATTR(1);
857 DEVICE_BTNIMG_ATTR(2);
858 DEVICE_BTNIMG_ATTR(3);
859 DEVICE_BTNIMG_ATTR(4);
860 DEVICE_BTNIMG_ATTR(5);
861 DEVICE_BTNIMG_ATTR(6);
862 DEVICE_BTNIMG_ATTR(7);
863
864 static struct attribute *cintiq_led_attrs[] = {
865 &dev_attr_status_led0_select.attr,
866 &dev_attr_status_led1_select.attr,
867 NULL
868 };
869
870 static struct attribute_group cintiq_led_attr_group = {
871 .name = "wacom_led",
872 .attrs = cintiq_led_attrs,
873 };
874
875 static struct attribute *intuos4_led_attrs[] = {
876 &dev_attr_status0_luminance.attr,
877 &dev_attr_status1_luminance.attr,
878 &dev_attr_status_led0_select.attr,
879 &dev_attr_buttons_luminance.attr,
880 &dev_attr_button0_rawimg.attr,
881 &dev_attr_button1_rawimg.attr,
882 &dev_attr_button2_rawimg.attr,
883 &dev_attr_button3_rawimg.attr,
884 &dev_attr_button4_rawimg.attr,
885 &dev_attr_button5_rawimg.attr,
886 &dev_attr_button6_rawimg.attr,
887 &dev_attr_button7_rawimg.attr,
888 NULL
889 };
890
891 static struct attribute_group intuos4_led_attr_group = {
892 .name = "wacom_led",
893 .attrs = intuos4_led_attrs,
894 };
895
896 static struct attribute *intuos5_led_attrs[] = {
897 &dev_attr_status0_luminance.attr,
898 &dev_attr_status_led0_select.attr,
899 NULL
900 };
901
902 static struct attribute_group intuos5_led_attr_group = {
903 .name = "wacom_led",
904 .attrs = intuos5_led_attrs,
905 };
906
907 static int wacom_initialize_leds(struct wacom *wacom)
908 {
909 int error;
910
911 if (!(wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD))
912 return 0;
913
914 /* Initialize default values */
915 switch (wacom->wacom_wac.features.type) {
916 case INTUOS4S:
917 case INTUOS4:
918 case INTUOS4WL:
919 case INTUOS4L:
920 wacom->led.select[0] = 0;
921 wacom->led.select[1] = 0;
922 wacom->led.llv = 10;
923 wacom->led.hlv = 20;
924 wacom->led.img_lum = 10;
925 error = sysfs_create_group(&wacom->hdev->dev.kobj,
926 &intuos4_led_attr_group);
927 break;
928
929 case WACOM_24HD:
930 case WACOM_21UX2:
931 wacom->led.select[0] = 0;
932 wacom->led.select[1] = 0;
933 wacom->led.llv = 0;
934 wacom->led.hlv = 0;
935 wacom->led.img_lum = 0;
936
937 error = sysfs_create_group(&wacom->hdev->dev.kobj,
938 &cintiq_led_attr_group);
939 break;
940
941 case INTUOS5S:
942 case INTUOS5:
943 case INTUOS5L:
944 case INTUOSPS:
945 case INTUOSPM:
946 case INTUOSPL:
947 wacom->led.select[0] = 0;
948 wacom->led.select[1] = 0;
949 wacom->led.llv = 32;
950 wacom->led.hlv = 0;
951 wacom->led.img_lum = 0;
952
953 error = sysfs_create_group(&wacom->hdev->dev.kobj,
954 &intuos5_led_attr_group);
955 break;
956
957 default:
958 return 0;
959 }
960
961 if (error) {
962 hid_err(wacom->hdev,
963 "cannot create sysfs group err: %d\n", error);
964 return error;
965 }
966 wacom_led_control(wacom);
967 wacom->led_initialized = true;
968
969 return 0;
970 }
971
972 static void wacom_destroy_leds(struct wacom *wacom)
973 {
974 if (!wacom->led_initialized)
975 return;
976
977 if (!(wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD))
978 return;
979
980 wacom->led_initialized = false;
981
982 switch (wacom->wacom_wac.features.type) {
983 case INTUOS4S:
984 case INTUOS4:
985 case INTUOS4WL:
986 case INTUOS4L:
987 sysfs_remove_group(&wacom->hdev->dev.kobj,
988 &intuos4_led_attr_group);
989 break;
990
991 case WACOM_24HD:
992 case WACOM_21UX2:
993 sysfs_remove_group(&wacom->hdev->dev.kobj,
994 &cintiq_led_attr_group);
995 break;
996
997 case INTUOS5S:
998 case INTUOS5:
999 case INTUOS5L:
1000 case INTUOSPS:
1001 case INTUOSPM:
1002 case INTUOSPL:
1003 sysfs_remove_group(&wacom->hdev->dev.kobj,
1004 &intuos5_led_attr_group);
1005 break;
1006 }
1007 }
1008
1009 static enum power_supply_property wacom_battery_props[] = {
1010 POWER_SUPPLY_PROP_PRESENT,
1011 POWER_SUPPLY_PROP_STATUS,
1012 POWER_SUPPLY_PROP_SCOPE,
1013 POWER_SUPPLY_PROP_CAPACITY
1014 };
1015
1016 static enum power_supply_property wacom_ac_props[] = {
1017 POWER_SUPPLY_PROP_PRESENT,
1018 POWER_SUPPLY_PROP_ONLINE,
1019 POWER_SUPPLY_PROP_SCOPE,
1020 };
1021
1022 static int wacom_battery_get_property(struct power_supply *psy,
1023 enum power_supply_property psp,
1024 union power_supply_propval *val)
1025 {
1026 struct wacom *wacom = power_supply_get_drvdata(psy);
1027 int ret = 0;
1028
1029 switch (psp) {
1030 case POWER_SUPPLY_PROP_PRESENT:
1031 val->intval = wacom->wacom_wac.bat_connected;
1032 break;
1033 case POWER_SUPPLY_PROP_SCOPE:
1034 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
1035 break;
1036 case POWER_SUPPLY_PROP_CAPACITY:
1037 val->intval =
1038 wacom->wacom_wac.battery_capacity;
1039 break;
1040 case POWER_SUPPLY_PROP_STATUS:
1041 if (wacom->wacom_wac.bat_charging)
1042 val->intval = POWER_SUPPLY_STATUS_CHARGING;
1043 else if (wacom->wacom_wac.battery_capacity == 100 &&
1044 wacom->wacom_wac.ps_connected)
1045 val->intval = POWER_SUPPLY_STATUS_FULL;
1046 else if (wacom->wacom_wac.ps_connected)
1047 val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
1048 else
1049 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
1050 break;
1051 default:
1052 ret = -EINVAL;
1053 break;
1054 }
1055
1056 return ret;
1057 }
1058
1059 static int wacom_ac_get_property(struct power_supply *psy,
1060 enum power_supply_property psp,
1061 union power_supply_propval *val)
1062 {
1063 struct wacom *wacom = power_supply_get_drvdata(psy);
1064 int ret = 0;
1065
1066 switch (psp) {
1067 case POWER_SUPPLY_PROP_PRESENT:
1068 /* fall through */
1069 case POWER_SUPPLY_PROP_ONLINE:
1070 val->intval = wacom->wacom_wac.ps_connected;
1071 break;
1072 case POWER_SUPPLY_PROP_SCOPE:
1073 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
1074 break;
1075 default:
1076 ret = -EINVAL;
1077 break;
1078 }
1079 return ret;
1080 }
1081
1082 static int wacom_initialize_battery(struct wacom *wacom)
1083 {
1084 static atomic_t battery_no = ATOMIC_INIT(0);
1085 struct power_supply_config psy_cfg = { .drv_data = wacom, };
1086 unsigned long n;
1087
1088 if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) {
1089 struct power_supply_desc *bat_desc = &wacom->battery_desc;
1090 struct power_supply_desc *ac_desc = &wacom->ac_desc;
1091 n = atomic_inc_return(&battery_no) - 1;
1092
1093 bat_desc->properties = wacom_battery_props;
1094 bat_desc->num_properties = ARRAY_SIZE(wacom_battery_props);
1095 bat_desc->get_property = wacom_battery_get_property;
1096 sprintf(wacom->wacom_wac.bat_name, "wacom_battery_%ld", n);
1097 bat_desc->name = wacom->wacom_wac.bat_name;
1098 bat_desc->type = POWER_SUPPLY_TYPE_BATTERY;
1099 bat_desc->use_for_apm = 0;
1100
1101 ac_desc->properties = wacom_ac_props;
1102 ac_desc->num_properties = ARRAY_SIZE(wacom_ac_props);
1103 ac_desc->get_property = wacom_ac_get_property;
1104 sprintf(wacom->wacom_wac.ac_name, "wacom_ac_%ld", n);
1105 ac_desc->name = wacom->wacom_wac.ac_name;
1106 ac_desc->type = POWER_SUPPLY_TYPE_MAINS;
1107 ac_desc->use_for_apm = 0;
1108
1109 wacom->battery = power_supply_register(&wacom->hdev->dev,
1110 &wacom->battery_desc, &psy_cfg);
1111 if (IS_ERR(wacom->battery))
1112 return PTR_ERR(wacom->battery);
1113
1114 power_supply_powers(wacom->battery, &wacom->hdev->dev);
1115
1116 wacom->ac = power_supply_register(&wacom->hdev->dev,
1117 &wacom->ac_desc,
1118 &psy_cfg);
1119 if (IS_ERR(wacom->ac)) {
1120 power_supply_unregister(wacom->battery);
1121 return PTR_ERR(wacom->ac);
1122 }
1123
1124 power_supply_powers(wacom->ac, &wacom->hdev->dev);
1125 }
1126
1127 return 0;
1128 }
1129
1130 static void wacom_destroy_battery(struct wacom *wacom)
1131 {
1132 if (wacom->battery) {
1133 power_supply_unregister(wacom->battery);
1134 wacom->battery = NULL;
1135 power_supply_unregister(wacom->ac);
1136 wacom->ac = NULL;
1137 }
1138 }
1139
1140 static ssize_t wacom_show_speed(struct device *dev,
1141 struct device_attribute
1142 *attr, char *buf)
1143 {
1144 struct hid_device *hdev = to_hid_device(dev);
1145 struct wacom *wacom = hid_get_drvdata(hdev);
1146
1147 return snprintf(buf, PAGE_SIZE, "%i\n", wacom->wacom_wac.bt_high_speed);
1148 }
1149
1150 static ssize_t wacom_store_speed(struct device *dev,
1151 struct device_attribute *attr,
1152 const char *buf, size_t count)
1153 {
1154 struct hid_device *hdev = to_hid_device(dev);
1155 struct wacom *wacom = hid_get_drvdata(hdev);
1156 u8 new_speed;
1157
1158 if (kstrtou8(buf, 0, &new_speed))
1159 return -EINVAL;
1160
1161 if (new_speed != 0 && new_speed != 1)
1162 return -EINVAL;
1163
1164 wacom_bt_query_tablet_data(hdev, new_speed, &wacom->wacom_wac.features);
1165
1166 return count;
1167 }
1168
1169 static DEVICE_ATTR(speed, DEV_ATTR_RW_PERM,
1170 wacom_show_speed, wacom_store_speed);
1171
1172
1173 static ssize_t wacom_show_remote_mode(struct kobject *kobj,
1174 struct kobj_attribute *kattr,
1175 char *buf, int index)
1176 {
1177 struct device *dev = kobj_to_dev(kobj->parent);
1178 struct hid_device *hdev = to_hid_device(dev);
1179 struct wacom *wacom = hid_get_drvdata(hdev);
1180 u8 mode;
1181
1182 mode = wacom->led.select[index];
1183 if (mode >= 0 && mode < 3)
1184 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
1185 else
1186 return snprintf(buf, PAGE_SIZE, "%d\n", -1);
1187 }
1188
1189 #define DEVICE_EKR_ATTR_GROUP(SET_ID) \
1190 static ssize_t wacom_show_remote##SET_ID##_mode(struct kobject *kobj, \
1191 struct kobj_attribute *kattr, char *buf) \
1192 { \
1193 return wacom_show_remote_mode(kobj, kattr, buf, SET_ID); \
1194 } \
1195 static struct kobj_attribute remote##SET_ID##_mode_attr = { \
1196 .attr = {.name = "remote_mode", \
1197 .mode = DEV_ATTR_RO_PERM}, \
1198 .show = wacom_show_remote##SET_ID##_mode, \
1199 }; \
1200 static struct attribute *remote##SET_ID##_serial_attrs[] = { \
1201 &remote##SET_ID##_mode_attr.attr, \
1202 NULL \
1203 }; \
1204 static struct attribute_group remote##SET_ID##_serial_group = { \
1205 .name = NULL, \
1206 .attrs = remote##SET_ID##_serial_attrs, \
1207 }
1208
1209 DEVICE_EKR_ATTR_GROUP(0);
1210 DEVICE_EKR_ATTR_GROUP(1);
1211 DEVICE_EKR_ATTR_GROUP(2);
1212 DEVICE_EKR_ATTR_GROUP(3);
1213 DEVICE_EKR_ATTR_GROUP(4);
1214
1215 int wacom_remote_create_attr_group(struct wacom *wacom, __u32 serial, int index)
1216 {
1217 int error = 0;
1218 char *buf;
1219 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1220
1221 wacom_wac->serial[index] = serial;
1222
1223 buf = kzalloc(WAC_REMOTE_SERIAL_MAX_STRLEN, GFP_KERNEL);
1224 if (!buf)
1225 return -ENOMEM;
1226 snprintf(buf, WAC_REMOTE_SERIAL_MAX_STRLEN, "%d", serial);
1227 wacom->remote_group[index].name = buf;
1228
1229 error = sysfs_create_group(wacom->remote_dir,
1230 &wacom->remote_group[index]);
1231 if (error) {
1232 hid_err(wacom->hdev,
1233 "cannot create sysfs group err: %d\n", error);
1234 kobject_put(wacom->remote_dir);
1235 return error;
1236 }
1237
1238 return 0;
1239 }
1240
1241 void wacom_remote_destroy_attr_group(struct wacom *wacom, __u32 serial)
1242 {
1243 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1244 int i;
1245
1246 if (!serial)
1247 return;
1248
1249 for (i = 0; i < WACOM_MAX_REMOTES; i++) {
1250 if (wacom_wac->serial[i] == serial) {
1251 wacom_wac->serial[i] = 0;
1252 wacom->led.select[i] = WACOM_STATUS_UNKNOWN;
1253 if (wacom->remote_group[i].name) {
1254 sysfs_remove_group(wacom->remote_dir,
1255 &wacom->remote_group[i]);
1256 kfree(wacom->remote_group[i].name);
1257 wacom->remote_group[i].name = NULL;
1258 }
1259 }
1260 }
1261 }
1262
1263 static int wacom_cmd_unpair_remote(struct wacom *wacom, unsigned char selector)
1264 {
1265 const size_t buf_size = 2;
1266 unsigned char *buf;
1267 int retval;
1268
1269 buf = kzalloc(buf_size, GFP_KERNEL);
1270 if (!buf)
1271 return -ENOMEM;
1272
1273 buf[0] = WAC_CMD_DELETE_PAIRING;
1274 buf[1] = selector;
1275
1276 retval = wacom_set_report(wacom->hdev, HID_OUTPUT_REPORT, buf,
1277 buf_size, WAC_CMD_RETRIES);
1278 kfree(buf);
1279
1280 return retval;
1281 }
1282
1283 static ssize_t wacom_store_unpair_remote(struct kobject *kobj,
1284 struct kobj_attribute *attr,
1285 const char *buf, size_t count)
1286 {
1287 unsigned char selector = 0;
1288 struct device *dev = kobj_to_dev(kobj->parent);
1289 struct hid_device *hdev = to_hid_device(dev);
1290 struct wacom *wacom = hid_get_drvdata(hdev);
1291 int err;
1292
1293 if (!strncmp(buf, "*\n", 2)) {
1294 selector = WAC_CMD_UNPAIR_ALL;
1295 } else {
1296 hid_info(wacom->hdev, "remote: unrecognized unpair code: %s\n",
1297 buf);
1298 return -1;
1299 }
1300
1301 mutex_lock(&wacom->lock);
1302
1303 err = wacom_cmd_unpair_remote(wacom, selector);
1304 mutex_unlock(&wacom->lock);
1305
1306 return err < 0 ? err : count;
1307 }
1308
1309 static struct kobj_attribute unpair_remote_attr = {
1310 .attr = {.name = "unpair_remote", .mode = 0200},
1311 .store = wacom_store_unpair_remote,
1312 };
1313
1314 static const struct attribute *remote_unpair_attrs[] = {
1315 &unpair_remote_attr.attr,
1316 NULL
1317 };
1318
1319 static int wacom_initialize_remote(struct wacom *wacom)
1320 {
1321 int error = 0;
1322 struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1323 int i;
1324
1325 if (wacom->wacom_wac.features.type != REMOTE)
1326 return 0;
1327
1328 wacom->remote_group[0] = remote0_serial_group;
1329 wacom->remote_group[1] = remote1_serial_group;
1330 wacom->remote_group[2] = remote2_serial_group;
1331 wacom->remote_group[3] = remote3_serial_group;
1332 wacom->remote_group[4] = remote4_serial_group;
1333
1334 wacom->remote_dir = kobject_create_and_add("wacom_remote",
1335 &wacom->hdev->dev.kobj);
1336 if (!wacom->remote_dir)
1337 return -ENOMEM;
1338
1339 error = sysfs_create_files(wacom->remote_dir, remote_unpair_attrs);
1340
1341 if (error) {
1342 hid_err(wacom->hdev,
1343 "cannot create sysfs group err: %d\n", error);
1344 return error;
1345 }
1346
1347 for (i = 0; i < WACOM_MAX_REMOTES; i++) {
1348 wacom->led.select[i] = WACOM_STATUS_UNKNOWN;
1349 wacom_wac->serial[i] = 0;
1350 }
1351
1352 return 0;
1353 }
1354
1355 static struct input_dev *wacom_allocate_input(struct wacom *wacom)
1356 {
1357 struct input_dev *input_dev;
1358 struct hid_device *hdev = wacom->hdev;
1359 struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1360
1361 input_dev = input_allocate_device();
1362 if (!input_dev)
1363 return NULL;
1364
1365 input_dev->name = wacom_wac->features.name;
1366 input_dev->phys = hdev->phys;
1367 input_dev->dev.parent = &hdev->dev;
1368 input_dev->open = wacom_open;
1369 input_dev->close = wacom_close;
1370 input_dev->uniq = hdev->uniq;
1371 input_dev->id.bustype = hdev->bus;
1372 input_dev->id.vendor = hdev->vendor;
1373 input_dev->id.product = wacom_wac->pid ? wacom_wac->pid : hdev->product;
1374 input_dev->id.version = hdev->version;
1375 input_set_drvdata(input_dev, wacom);
1376
1377 return input_dev;
1378 }
1379
1380 static void wacom_clean_inputs(struct wacom *wacom)
1381 {
1382 if (wacom->wacom_wac.pen_input) {
1383 if (wacom->wacom_wac.pen_registered)
1384 input_unregister_device(wacom->wacom_wac.pen_input);
1385 else
1386 input_free_device(wacom->wacom_wac.pen_input);
1387 }
1388 if (wacom->wacom_wac.touch_input) {
1389 if (wacom->wacom_wac.touch_registered)
1390 input_unregister_device(wacom->wacom_wac.touch_input);
1391 else
1392 input_free_device(wacom->wacom_wac.touch_input);
1393 }
1394 if (wacom->wacom_wac.pad_input) {
1395 if (wacom->wacom_wac.pad_registered)
1396 input_unregister_device(wacom->wacom_wac.pad_input);
1397 else
1398 input_free_device(wacom->wacom_wac.pad_input);
1399 }
1400 kobject_put(wacom->remote_dir);
1401 wacom->wacom_wac.pen_input = NULL;
1402 wacom->wacom_wac.touch_input = NULL;
1403 wacom->wacom_wac.pad_input = NULL;
1404 wacom->wacom_wac.pen_registered = false;
1405 wacom->wacom_wac.touch_registered = false;
1406 wacom->wacom_wac.pad_registered = false;
1407 wacom_destroy_leds(wacom);
1408 }
1409
1410 static int wacom_allocate_inputs(struct wacom *wacom)
1411 {
1412 struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1413
1414 wacom_wac->pen_input = wacom_allocate_input(wacom);
1415 wacom_wac->touch_input = wacom_allocate_input(wacom);
1416 wacom_wac->pad_input = wacom_allocate_input(wacom);
1417 if (!wacom_wac->pen_input || !wacom_wac->touch_input || !wacom_wac->pad_input) {
1418 wacom_clean_inputs(wacom);
1419 return -ENOMEM;
1420 }
1421
1422 wacom_wac->pen_input->name = wacom_wac->pen_name;
1423 wacom_wac->touch_input->name = wacom_wac->touch_name;
1424 wacom_wac->pad_input->name = wacom_wac->pad_name;
1425
1426 return 0;
1427 }
1428
1429 static int wacom_register_inputs(struct wacom *wacom)
1430 {
1431 struct input_dev *pen_input_dev, *touch_input_dev, *pad_input_dev;
1432 struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1433 int error = 0;
1434
1435 pen_input_dev = wacom_wac->pen_input;
1436 touch_input_dev = wacom_wac->touch_input;
1437 pad_input_dev = wacom_wac->pad_input;
1438
1439 if (!pen_input_dev || !touch_input_dev || !pad_input_dev)
1440 return -EINVAL;
1441
1442 error = wacom_setup_pen_input_capabilities(pen_input_dev, wacom_wac);
1443 if (error) {
1444 /* no pen in use on this interface */
1445 input_free_device(pen_input_dev);
1446 wacom_wac->pen_input = NULL;
1447 pen_input_dev = NULL;
1448 } else {
1449 error = input_register_device(pen_input_dev);
1450 if (error)
1451 goto fail_register_pen_input;
1452 wacom_wac->pen_registered = true;
1453 }
1454
1455 error = wacom_setup_touch_input_capabilities(touch_input_dev, wacom_wac);
1456 if (error) {
1457 /* no touch in use on this interface */
1458 input_free_device(touch_input_dev);
1459 wacom_wac->touch_input = NULL;
1460 touch_input_dev = NULL;
1461 } else {
1462 error = input_register_device(touch_input_dev);
1463 if (error)
1464 goto fail_register_touch_input;
1465 wacom_wac->touch_registered = true;
1466 }
1467
1468 error = wacom_setup_pad_input_capabilities(pad_input_dev, wacom_wac);
1469 if (error) {
1470 /* no pad in use on this interface */
1471 input_free_device(pad_input_dev);
1472 wacom_wac->pad_input = NULL;
1473 pad_input_dev = NULL;
1474 } else {
1475 error = input_register_device(pad_input_dev);
1476 if (error)
1477 goto fail_register_pad_input;
1478 wacom_wac->pad_registered = true;
1479
1480 error = wacom_initialize_leds(wacom);
1481 if (error)
1482 goto fail_leds;
1483
1484 error = wacom_initialize_remote(wacom);
1485 if (error)
1486 goto fail_remote;
1487 }
1488
1489 return 0;
1490
1491 fail_remote:
1492 wacom_destroy_leds(wacom);
1493 fail_leds:
1494 input_unregister_device(pad_input_dev);
1495 pad_input_dev = NULL;
1496 wacom_wac->pad_registered = false;
1497 fail_register_pad_input:
1498 if (touch_input_dev)
1499 input_unregister_device(touch_input_dev);
1500 wacom_wac->touch_input = NULL;
1501 wacom_wac->touch_registered = false;
1502 fail_register_touch_input:
1503 if (pen_input_dev)
1504 input_unregister_device(pen_input_dev);
1505 wacom_wac->pen_input = NULL;
1506 wacom_wac->pen_registered = false;
1507 fail_register_pen_input:
1508 return error;
1509 }
1510
1511 /*
1512 * Not all devices report physical dimensions from HID.
1513 * Compute the default from hardcoded logical dimension
1514 * and resolution before driver overwrites them.
1515 */
1516 static void wacom_set_default_phy(struct wacom_features *features)
1517 {
1518 if (features->x_resolution) {
1519 features->x_phy = (features->x_max * 100) /
1520 features->x_resolution;
1521 features->y_phy = (features->y_max * 100) /
1522 features->y_resolution;
1523 }
1524 }
1525
1526 static void wacom_calculate_res(struct wacom_features *features)
1527 {
1528 /* set unit to "100th of a mm" for devices not reported by HID */
1529 if (!features->unit) {
1530 features->unit = 0x11;
1531 features->unitExpo = -3;
1532 }
1533
1534 features->x_resolution = wacom_calc_hid_res(features->x_max,
1535 features->x_phy,
1536 features->unit,
1537 features->unitExpo);
1538 features->y_resolution = wacom_calc_hid_res(features->y_max,
1539 features->y_phy,
1540 features->unit,
1541 features->unitExpo);
1542 }
1543
1544 void wacom_battery_work(struct work_struct *work)
1545 {
1546 struct wacom *wacom = container_of(work, struct wacom, work);
1547
1548 if ((wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&
1549 !wacom->battery) {
1550 wacom_initialize_battery(wacom);
1551 }
1552 else if (!(wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&
1553 wacom->battery) {
1554 wacom_destroy_battery(wacom);
1555 }
1556 }
1557
1558 static size_t wacom_compute_pktlen(struct hid_device *hdev)
1559 {
1560 struct hid_report_enum *report_enum;
1561 struct hid_report *report;
1562 size_t size = 0;
1563
1564 report_enum = hdev->report_enum + HID_INPUT_REPORT;
1565
1566 list_for_each_entry(report, &report_enum->report_list, list) {
1567 size_t report_size = hid_report_len(report);
1568 if (report_size > size)
1569 size = report_size;
1570 }
1571
1572 return size;
1573 }
1574
1575 static void wacom_update_name(struct wacom *wacom, const char *suffix)
1576 {
1577 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1578 struct wacom_features *features = &wacom_wac->features;
1579 char name[WACOM_NAME_MAX];
1580
1581 /* Generic devices name unspecified */
1582 if ((features->type == HID_GENERIC) && !strcmp("Wacom HID", features->name)) {
1583 if (strstr(wacom->hdev->name, "Wacom") ||
1584 strstr(wacom->hdev->name, "wacom") ||
1585 strstr(wacom->hdev->name, "WACOM")) {
1586 /* name is in HID descriptor, use it */
1587 strlcpy(name, wacom->hdev->name, sizeof(name));
1588
1589 /* strip out excess whitespaces */
1590 while (1) {
1591 char *gap = strstr(name, " ");
1592 if (gap == NULL)
1593 break;
1594 /* shift everything including the terminator */
1595 memmove(gap, gap+1, strlen(gap));
1596 }
1597 /* get rid of trailing whitespace */
1598 if (name[strlen(name)-1] == ' ')
1599 name[strlen(name)-1] = '\0';
1600 } else {
1601 /* no meaningful name retrieved. use product ID */
1602 snprintf(name, sizeof(name),
1603 "%s %X", features->name, wacom->hdev->product);
1604 }
1605 } else {
1606 strlcpy(name, features->name, sizeof(name));
1607 }
1608
1609 /* Append the device type to the name */
1610 snprintf(wacom_wac->pen_name, sizeof(wacom_wac->pen_name),
1611 "%s%s Pen", name, suffix);
1612 snprintf(wacom_wac->touch_name, sizeof(wacom_wac->touch_name),
1613 "%s%s Finger", name, suffix);
1614 snprintf(wacom_wac->pad_name, sizeof(wacom_wac->pad_name),
1615 "%s%s Pad", name, suffix);
1616 }
1617
1618 static int wacom_parse_and_register(struct wacom *wacom, bool wireless)
1619 {
1620 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1621 struct wacom_features *features = &wacom_wac->features;
1622 struct hid_device *hdev = wacom->hdev;
1623 int error;
1624 unsigned int connect_mask = HID_CONNECT_HIDRAW;
1625
1626 features->pktlen = wacom_compute_pktlen(hdev);
1627 if (features->pktlen > WACOM_PKGLEN_MAX)
1628 return -EINVAL;
1629
1630 error = wacom_allocate_inputs(wacom);
1631 if (error)
1632 return error;
1633
1634 /*
1635 * Bamboo Pad has a generic hid handling for the Pen, and we switch it
1636 * into debug mode for the touch part.
1637 * We ignore the other interfaces.
1638 */
1639 if (features->type == BAMBOO_PAD) {
1640 if (features->pktlen == WACOM_PKGLEN_PENABLED) {
1641 features->type = HID_GENERIC;
1642 } else if ((features->pktlen != WACOM_PKGLEN_BPAD_TOUCH) &&
1643 (features->pktlen != WACOM_PKGLEN_BPAD_TOUCH_USB)) {
1644 error = -ENODEV;
1645 goto fail_allocate_inputs;
1646 }
1647 }
1648
1649 /* set the default size in case we do not get them from hid */
1650 wacom_set_default_phy(features);
1651
1652 /* Retrieve the physical and logical size for touch devices */
1653 wacom_retrieve_hid_descriptor(hdev, features);
1654 wacom_setup_device_quirks(wacom);
1655
1656 if (features->device_type == WACOM_DEVICETYPE_NONE &&
1657 features->type != WIRELESS) {
1658 error = features->type == HID_GENERIC ? -ENODEV : 0;
1659
1660 dev_warn(&hdev->dev, "Unknown device_type for '%s'. %s.",
1661 hdev->name,
1662 error ? "Ignoring" : "Assuming pen");
1663
1664 if (error)
1665 goto fail_parsed;
1666
1667 features->device_type |= WACOM_DEVICETYPE_PEN;
1668 }
1669
1670 wacom_calculate_res(features);
1671
1672 wacom_update_name(wacom, wireless ? " (WL)" : "");
1673
1674 error = wacom_add_shared_data(hdev);
1675 if (error)
1676 goto fail_shared_data;
1677
1678 if (!(features->device_type & WACOM_DEVICETYPE_WL_MONITOR) &&
1679 (features->quirks & WACOM_QUIRK_BATTERY)) {
1680 error = wacom_initialize_battery(wacom);
1681 if (error)
1682 goto fail_battery;
1683 }
1684
1685 error = wacom_register_inputs(wacom);
1686 if (error)
1687 goto fail_register_inputs;
1688
1689 if (features->type == HID_GENERIC)
1690 connect_mask |= HID_CONNECT_DRIVER;
1691
1692 /* Regular HID work starts now */
1693 error = hid_hw_start(hdev, connect_mask);
1694 if (error) {
1695 hid_err(hdev, "hw start failed\n");
1696 goto fail_hw_start;
1697 }
1698
1699 if (!wireless) {
1700 /* Note that if query fails it is not a hard failure */
1701 wacom_query_tablet_data(hdev, features);
1702 }
1703
1704 /* touch only Bamboo doesn't support pen */
1705 if ((features->type == BAMBOO_TOUCH) &&
1706 (features->device_type & WACOM_DEVICETYPE_PEN)) {
1707 error = -ENODEV;
1708 goto fail_hw_start;
1709 }
1710
1711 /* pen only Bamboo neither support touch nor pad */
1712 if ((features->type == BAMBOO_PEN) &&
1713 ((features->device_type & WACOM_DEVICETYPE_TOUCH) ||
1714 (features->device_type & WACOM_DEVICETYPE_PAD))) {
1715 error = -ENODEV;
1716 goto fail_hw_start;
1717 }
1718
1719 if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR)
1720 error = hid_hw_open(hdev);
1721
1722 if ((wacom_wac->features.type == INTUOSHT ||
1723 wacom_wac->features.type == INTUOSHT2) &&
1724 (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH)) {
1725 wacom_wac->shared->touch_input = wacom_wac->touch_input;
1726 }
1727
1728 return 0;
1729
1730 fail_hw_start:
1731 hid_hw_stop(hdev);
1732 fail_register_inputs:
1733 wacom_clean_inputs(wacom);
1734 wacom_destroy_battery(wacom);
1735 fail_battery:
1736 wacom_remove_shared_data(wacom);
1737 fail_shared_data:
1738 fail_parsed:
1739 fail_allocate_inputs:
1740 wacom_clean_inputs(wacom);
1741 return error;
1742 }
1743
1744 static void wacom_wireless_work(struct work_struct *work)
1745 {
1746 struct wacom *wacom = container_of(work, struct wacom, work);
1747 struct usb_device *usbdev = wacom->usbdev;
1748 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1749 struct hid_device *hdev1, *hdev2;
1750 struct wacom *wacom1, *wacom2;
1751 struct wacom_wac *wacom_wac1, *wacom_wac2;
1752 int error;
1753
1754 /*
1755 * Regardless if this is a disconnect or a new tablet,
1756 * remove any existing input and battery devices.
1757 */
1758
1759 wacom_destroy_battery(wacom);
1760
1761 /* Stylus interface */
1762 hdev1 = usb_get_intfdata(usbdev->config->interface[1]);
1763 wacom1 = hid_get_drvdata(hdev1);
1764 wacom_wac1 = &(wacom1->wacom_wac);
1765 wacom_clean_inputs(wacom1);
1766
1767 /* Touch interface */
1768 hdev2 = usb_get_intfdata(usbdev->config->interface[2]);
1769 wacom2 = hid_get_drvdata(hdev2);
1770 wacom_wac2 = &(wacom2->wacom_wac);
1771 wacom_clean_inputs(wacom2);
1772
1773 if (wacom_wac->pid == 0) {
1774 hid_info(wacom->hdev, "wireless tablet disconnected\n");
1775 wacom_wac1->shared->type = 0;
1776 } else {
1777 const struct hid_device_id *id = wacom_ids;
1778
1779 hid_info(wacom->hdev, "wireless tablet connected with PID %x\n",
1780 wacom_wac->pid);
1781
1782 while (id->bus) {
1783 if (id->vendor == USB_VENDOR_ID_WACOM &&
1784 id->product == wacom_wac->pid)
1785 break;
1786 id++;
1787 }
1788
1789 if (!id->bus) {
1790 hid_info(wacom->hdev, "ignoring unknown PID.\n");
1791 return;
1792 }
1793
1794 /* Stylus interface */
1795 wacom_wac1->features =
1796 *((struct wacom_features *)id->driver_data);
1797
1798 wacom_wac1->pid = wacom_wac->pid;
1799 hid_hw_stop(hdev1);
1800 error = wacom_parse_and_register(wacom1, true);
1801 if (error)
1802 goto fail;
1803
1804 /* Touch interface */
1805 if (wacom_wac1->features.touch_max ||
1806 (wacom_wac1->features.type >= INTUOSHT &&
1807 wacom_wac1->features.type <= BAMBOO_PT)) {
1808 wacom_wac2->features =
1809 *((struct wacom_features *)id->driver_data);
1810 wacom_wac2->pid = wacom_wac->pid;
1811 hid_hw_stop(hdev2);
1812 error = wacom_parse_and_register(wacom2, true);
1813 if (error)
1814 goto fail;
1815 }
1816
1817 error = wacom_initialize_battery(wacom);
1818 if (error)
1819 goto fail;
1820 }
1821
1822 return;
1823
1824 fail:
1825 wacom_clean_inputs(wacom1);
1826 wacom_clean_inputs(wacom2);
1827 return;
1828 }
1829
1830 static int wacom_probe(struct hid_device *hdev,
1831 const struct hid_device_id *id)
1832 {
1833 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
1834 struct usb_device *dev = interface_to_usbdev(intf);
1835 struct wacom *wacom;
1836 struct wacom_wac *wacom_wac;
1837 struct wacom_features *features;
1838 int error;
1839
1840 if (!id->driver_data)
1841 return -EINVAL;
1842
1843 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1844
1845 /* hid-core sets this quirk for the boot interface */
1846 hdev->quirks &= ~HID_QUIRK_NOGET;
1847
1848 wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
1849 if (!wacom)
1850 return -ENOMEM;
1851
1852 hid_set_drvdata(hdev, wacom);
1853 wacom->hdev = hdev;
1854
1855 wacom_wac = &wacom->wacom_wac;
1856 wacom_wac->features = *((struct wacom_features *)id->driver_data);
1857 features = &wacom_wac->features;
1858
1859 if (features->check_for_hid_type && features->hid_type != hdev->type) {
1860 error = -ENODEV;
1861 goto fail_type;
1862 }
1863
1864 wacom_wac->hid_data.inputmode = -1;
1865 wacom_wac->mode_report = -1;
1866
1867 wacom->usbdev = dev;
1868 wacom->intf = intf;
1869 mutex_init(&wacom->lock);
1870 INIT_WORK(&wacom->work, wacom_wireless_work);
1871
1872 /* ask for the report descriptor to be loaded by HID */
1873 error = hid_parse(hdev);
1874 if (error) {
1875 hid_err(hdev, "parse failed\n");
1876 goto fail_parse;
1877 }
1878
1879 error = wacom_parse_and_register(wacom, false);
1880 if (error)
1881 goto fail_parse;
1882
1883 if (hdev->bus == BUS_BLUETOOTH) {
1884 error = device_create_file(&hdev->dev, &dev_attr_speed);
1885 if (error)
1886 hid_warn(hdev,
1887 "can't create sysfs speed attribute err: %d\n",
1888 error);
1889 }
1890
1891 return 0;
1892
1893 fail_type:
1894 fail_parse:
1895 kfree(wacom);
1896 hid_set_drvdata(hdev, NULL);
1897 return error;
1898 }
1899
1900 static void wacom_remove(struct hid_device *hdev)
1901 {
1902 struct wacom *wacom = hid_get_drvdata(hdev);
1903 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1904 struct wacom_features *features = &wacom_wac->features;
1905
1906 if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR)
1907 hid_hw_close(hdev);
1908
1909 hid_hw_stop(hdev);
1910
1911 cancel_work_sync(&wacom->work);
1912 wacom_clean_inputs(wacom);
1913 if (hdev->bus == BUS_BLUETOOTH)
1914 device_remove_file(&hdev->dev, &dev_attr_speed);
1915 wacom_destroy_battery(wacom);
1916 wacom_remove_shared_data(wacom);
1917
1918 hid_set_drvdata(hdev, NULL);
1919 kfree(wacom);
1920 }
1921
1922 #ifdef CONFIG_PM
1923 static int wacom_resume(struct hid_device *hdev)
1924 {
1925 struct wacom *wacom = hid_get_drvdata(hdev);
1926 struct wacom_features *features = &wacom->wacom_wac.features;
1927
1928 mutex_lock(&wacom->lock);
1929
1930 /* switch to wacom mode first */
1931 wacom_query_tablet_data(hdev, features);
1932 wacom_led_control(wacom);
1933
1934 mutex_unlock(&wacom->lock);
1935
1936 return 0;
1937 }
1938
1939 static int wacom_reset_resume(struct hid_device *hdev)
1940 {
1941 return wacom_resume(hdev);
1942 }
1943 #endif /* CONFIG_PM */
1944
1945 static struct hid_driver wacom_driver = {
1946 .name = "wacom",
1947 .id_table = wacom_ids,
1948 .probe = wacom_probe,
1949 .remove = wacom_remove,
1950 .report = wacom_wac_report,
1951 #ifdef CONFIG_PM
1952 .resume = wacom_resume,
1953 .reset_resume = wacom_reset_resume,
1954 #endif
1955 .raw_event = wacom_raw_event,
1956 };
1957 module_hid_driver(wacom_driver);
1958
1959 MODULE_VERSION(DRIVER_VERSION);
1960 MODULE_AUTHOR(DRIVER_AUTHOR);
1961 MODULE_DESCRIPTION(DRIVER_DESC);
1962 MODULE_LICENSE(DRIVER_LICENSE);
Linux kernel - Deliverables
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