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dm thin metadata: fix __udivdi3 undefined on 32-bit
[linux/fpc-iii.git] / drivers / hid / wacom_sys.c
blobe06af5b9f59e822e7d2a38e3cfcc478961e7a207
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 }
157
158 /*
159 * Interface Descriptor of wacom devices can be incomplete and
160 * inconsistent so wacom_features table is used to store stylus
161 * device's packet lengths, various maximum values, and tablet
162 * resolution based on product ID's.
163 *
164 * For devices that contain 2 interfaces, wacom_features table is
165 * inaccurate for the touch interface. Since the Interface Descriptor
166 * for touch interfaces has pretty complete data, this function exists
167 * to query tablet for this missing information instead of hard coding in
168 * an additional table.
169 *
170 * A typical Interface Descriptor for a stylus will contain a
171 * boot mouse application collection that is not of interest and this
172 * function will ignore it.
173 *
174 * It also contains a digitizer application collection that also is not
175 * of interest since any information it contains would be duplicate
176 * of what is in wacom_features. Usually it defines a report of an array
177 * of bytes that could be used as max length of the stylus packet returned.
178 * If it happens to define a Digitizer-Stylus Physical Collection then
179 * the X and Y logical values contain valid data but it is ignored.
180 *
181 * A typical Interface Descriptor for a touch interface will contain a
182 * Digitizer-Finger Physical Collection which will define both logical
183 * X/Y maximum as well as the physical size of tablet. Since touch
184 * interfaces haven't supported pressure or distance, this is enough
185 * information to override invalid values in the wacom_features table.
186 *
187 * Intuos5 touch interface and 3rd gen Bamboo Touch do not contain useful
188 * data. We deal with them after returning from this function.
189 */
190 static void wacom_usage_mapping(struct hid_device *hdev,
191 struct hid_field *field, struct hid_usage *usage)
192 {
193 struct wacom *wacom = hid_get_drvdata(hdev);
194 struct wacom_features *features = &wacom->wacom_wac.features;
195 bool finger = WACOM_FINGER_FIELD(field);
196 bool pen = WACOM_PEN_FIELD(field);
197
198 /*
199 * Requiring Stylus Usage will ignore boot mouse
200 * X/Y values and some cases of invalid Digitizer X/Y
201 * values commonly reported.
202 */
203 if (pen)
204 features->device_type |= WACOM_DEVICETYPE_PEN;
205 else if (finger)
206 features->device_type |= WACOM_DEVICETYPE_TOUCH;
207 else
208 return;
209
210 /*
211 * Bamboo models do not support HID_DG_CONTACTMAX.
212 * And, Bamboo Pen only descriptor contains touch.
213 */
214 if (features->type > BAMBOO_PT) {
215 /* ISDv4 touch devices at least supports one touch point */
216 if (finger && !features->touch_max)
217 features->touch_max = 1;
218 }
219
220 switch (usage->hid) {
221 case HID_GD_X:
222 features->x_max = field->logical_maximum;
223 if (finger) {
224 features->x_phy = field->physical_maximum;
225 if ((features->type != BAMBOO_PT) &&
226 (features->type != BAMBOO_TOUCH)) {
227 features->unit = field->unit;
228 features->unitExpo = field->unit_exponent;
229 }
230 }
231 break;
232 case HID_GD_Y:
233 features->y_max = field->logical_maximum;
234 if (finger) {
235 features->y_phy = field->physical_maximum;
236 if ((features->type != BAMBOO_PT) &&
237 (features->type != BAMBOO_TOUCH)) {
238 features->unit = field->unit;
239 features->unitExpo = field->unit_exponent;
240 }
241 }
242 break;
243 case HID_DG_TIPPRESSURE:
244 if (pen)
245 features->pressure_max = field->logical_maximum;
246 break;
247 }
248
249 if (features->type == HID_GENERIC)
250 wacom_wac_usage_mapping(hdev, field, usage);
251 }
252
253 static void wacom_post_parse_hid(struct hid_device *hdev,
254 struct wacom_features *features)
255 {
256 struct wacom *wacom = hid_get_drvdata(hdev);
257 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
258
259 if (features->type == HID_GENERIC) {
260 /* Any last-minute generic device setup */
261 if (features->touch_max > 1) {
262 input_mt_init_slots(wacom_wac->touch_input, wacom_wac->features.touch_max,
263 INPUT_MT_DIRECT);
264 }
265 }
266 }
267
268 static void wacom_parse_hid(struct hid_device *hdev,
269 struct wacom_features *features)
270 {
271 struct hid_report_enum *rep_enum;
272 struct hid_report *hreport;
273 int i, j;
274
275 /* check features first */
276 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT];
277 list_for_each_entry(hreport, &rep_enum->report_list, list) {
278 for (i = 0; i < hreport->maxfield; i++) {
279 /* Ignore if report count is out of bounds. */
280 if (hreport->field[i]->report_count < 1)
281 continue;
282
283 for (j = 0; j < hreport->field[i]->maxusage; j++) {
284 wacom_feature_mapping(hdev, hreport->field[i],
285 hreport->field[i]->usage + j);
286 }
287 }
288 }
289
290 /* now check the input usages */
291 rep_enum = &hdev->report_enum[HID_INPUT_REPORT];
292 list_for_each_entry(hreport, &rep_enum->report_list, list) {
293
294 if (!hreport->maxfield)
295 continue;
296
297 for (i = 0; i < hreport->maxfield; i++)
298 for (j = 0; j < hreport->field[i]->maxusage; j++)
299 wacom_usage_mapping(hdev, hreport->field[i],
300 hreport->field[i]->usage + j);
301 }
302
303 wacom_post_parse_hid(hdev, features);
304 }
305
306 static int wacom_hid_set_device_mode(struct hid_device *hdev)
307 {
308 struct wacom *wacom = hid_get_drvdata(hdev);
309 struct hid_data *hid_data = &wacom->wacom_wac.hid_data;
310 struct hid_report *r;
311 struct hid_report_enum *re;
312
313 if (hid_data->inputmode < 0)
314 return 0;
315
316 re = &(hdev->report_enum[HID_FEATURE_REPORT]);
317 r = re->report_id_hash[hid_data->inputmode];
318 if (r) {
319 r->field[0]->value[hid_data->inputmode_index] = 2;
320 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
321 }
322 return 0;
323 }
324
325 static int wacom_set_device_mode(struct hid_device *hdev, int report_id,
326 int length, int mode)
327 {
328 unsigned char *rep_data;
329 int error = -ENOMEM, limit = 0;
330
331 rep_data = kzalloc(length, GFP_KERNEL);
332 if (!rep_data)
333 return error;
334
335 do {
336 rep_data[0] = report_id;
337 rep_data[1] = mode;
338
339 error = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data,
340 length, 1);
341 if (error >= 0)
342 error = wacom_get_report(hdev, HID_FEATURE_REPORT,
343 rep_data, length, 1);
344 } while (error >= 0 && rep_data[1] != mode && limit++ < WAC_MSG_RETRIES);
345
346 kfree(rep_data);
347
348 return error < 0 ? error : 0;
349 }
350
351 static int wacom_bt_query_tablet_data(struct hid_device *hdev, u8 speed,
352 struct wacom_features *features)
353 {
354 struct wacom *wacom = hid_get_drvdata(hdev);
355 int ret;
356 u8 rep_data[2];
357
358 switch (features->type) {
359 case GRAPHIRE_BT:
360 rep_data[0] = 0x03;
361 rep_data[1] = 0x00;
362 ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2,
363 3);
364
365 if (ret >= 0) {
366 rep_data[0] = speed == 0 ? 0x05 : 0x06;
367 rep_data[1] = 0x00;
368
369 ret = wacom_set_report(hdev, HID_FEATURE_REPORT,
370 rep_data, 2, 3);
371
372 if (ret >= 0) {
373 wacom->wacom_wac.bt_high_speed = speed;
374 return 0;
375 }
376 }
377
378 /*
379 * Note that if the raw queries fail, it's not a hard failure
380 * and it is safe to continue
381 */
382 hid_warn(hdev, "failed to poke device, command %d, err %d\n",
383 rep_data[0], ret);
384 break;
385 case INTUOS4WL:
386 if (speed == 1)
387 wacom->wacom_wac.bt_features &= ~0x20;
388 else
389 wacom->wacom_wac.bt_features |= 0x20;
390
391 rep_data[0] = 0x03;
392 rep_data[1] = wacom->wacom_wac.bt_features;
393
394 ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2,
395 1);
396 if (ret >= 0)
397 wacom->wacom_wac.bt_high_speed = speed;
398 break;
399 }
400
401 return 0;
402 }
403
404 /*
405 * Switch the tablet into its most-capable mode. Wacom tablets are
406 * typically configured to power-up in a mode which sends mouse-like
407 * reports to the OS. To get absolute position, pressure data, etc.
408 * from the tablet, it is necessary to switch the tablet out of this
409 * mode and into one which sends the full range of tablet data.
410 */
411 static int wacom_query_tablet_data(struct hid_device *hdev,
412 struct wacom_features *features)
413 {
414 if (hdev->bus == BUS_BLUETOOTH)
415 return wacom_bt_query_tablet_data(hdev, 1, features);
416
417 if (features->type == HID_GENERIC)
418 return wacom_hid_set_device_mode(hdev);
419
420 if (features->device_type & WACOM_DEVICETYPE_TOUCH) {
421 if (features->type > TABLETPC) {
422 /* MT Tablet PC touch */
423 return wacom_set_device_mode(hdev, 3, 4, 4);
424 }
425 else if (features->type == WACOM_24HDT) {
426 return wacom_set_device_mode(hdev, 18, 3, 2);
427 }
428 else if (features->type == WACOM_27QHDT) {
429 return wacom_set_device_mode(hdev, 131, 3, 2);
430 }
431 else if (features->type == BAMBOO_PAD) {
432 return wacom_set_device_mode(hdev, 2, 2, 2);
433 }
434 } else if (features->device_type & WACOM_DEVICETYPE_PEN) {
435 if (features->type <= BAMBOO_PT) {
436 return wacom_set_device_mode(hdev, 2, 2, 2);
437 }
438 }
439
440 return 0;
441 }
442
443 static void wacom_retrieve_hid_descriptor(struct hid_device *hdev,
444 struct wacom_features *features)
445 {
446 struct wacom *wacom = hid_get_drvdata(hdev);
447 struct usb_interface *intf = wacom->intf;
448
449 /* default features */
450 features->x_fuzz = 4;
451 features->y_fuzz = 4;
452 features->pressure_fuzz = 0;
453 features->distance_fuzz = 0;
454
455 /*
456 * The wireless device HID is basic and layout conflicts with
457 * other tablets (monitor and touch interface can look like pen).
458 * Skip the query for this type and modify defaults based on
459 * interface number.
460 */
461 if (features->type == WIRELESS) {
462 if (intf->cur_altsetting->desc.bInterfaceNumber == 0)
463 features->device_type = WACOM_DEVICETYPE_WL_MONITOR;
464 else
465 features->device_type = WACOM_DEVICETYPE_NONE;
466 return;
467 }
468
469 wacom_parse_hid(hdev, features);
470 }
471
472 struct wacom_hdev_data {
473 struct list_head list;
474 struct kref kref;
475 struct hid_device *dev;
476 struct wacom_shared shared;
477 };
478
479 static LIST_HEAD(wacom_udev_list);
480 static DEFINE_MUTEX(wacom_udev_list_lock);
481
482 static bool wacom_are_sibling(struct hid_device *hdev,
483 struct hid_device *sibling)
484 {
485 struct wacom *wacom = hid_get_drvdata(hdev);
486 struct wacom_features *features = &wacom->wacom_wac.features;
487 int vid = features->oVid;
488 int pid = features->oPid;
489 int n1,n2;
490
491 if (vid == 0 && pid == 0) {
492 vid = hdev->vendor;
493 pid = hdev->product;
494 }
495
496 if (vid != sibling->vendor || pid != sibling->product)
497 return false;
498
499 /* Compare the physical path. */
500 n1 = strrchr(hdev->phys, '.') - hdev->phys;
501 n2 = strrchr(sibling->phys, '.') - sibling->phys;
502 if (n1 != n2 || n1 <= 0 || n2 <= 0)
503 return false;
504
505 return !strncmp(hdev->phys, sibling->phys, n1);
506 }
507
508 static struct wacom_hdev_data *wacom_get_hdev_data(struct hid_device *hdev)
509 {
510 struct wacom_hdev_data *data;
511
512 list_for_each_entry(data, &wacom_udev_list, list) {
513 if (wacom_are_sibling(hdev, data->dev)) {
514 kref_get(&data->kref);
515 return data;
516 }
517 }
518
519 return NULL;
520 }
521
522 static int wacom_add_shared_data(struct hid_device *hdev)
523 {
524 struct wacom *wacom = hid_get_drvdata(hdev);
525 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
526 struct wacom_hdev_data *data;
527 int retval = 0;
528
529 mutex_lock(&wacom_udev_list_lock);
530
531 data = wacom_get_hdev_data(hdev);
532 if (!data) {
533 data = kzalloc(sizeof(struct wacom_hdev_data), GFP_KERNEL);
534 if (!data) {
535 retval = -ENOMEM;
536 goto out;
537 }
538
539 kref_init(&data->kref);
540 data->dev = hdev;
541 list_add_tail(&data->list, &wacom_udev_list);
542 }
543
544 wacom_wac->shared = &data->shared;
545
546 if (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH)
547 wacom_wac->shared->touch = hdev;
548 else if (wacom_wac->features.device_type & WACOM_DEVICETYPE_PEN)
549 wacom_wac->shared->pen = hdev;
550
551 out:
552 mutex_unlock(&wacom_udev_list_lock);
553 return retval;
554 }
555
556 static void wacom_release_shared_data(struct kref *kref)
557 {
558 struct wacom_hdev_data *data =
559 container_of(kref, struct wacom_hdev_data, kref);
560
561 mutex_lock(&wacom_udev_list_lock);
562 list_del(&data->list);
563 mutex_unlock(&wacom_udev_list_lock);
564
565 kfree(data);
566 }
567
568 static void wacom_remove_shared_data(struct wacom *wacom)
569 {
570 struct wacom_hdev_data *data;
571 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
572
573 if (wacom_wac->shared) {
574 data = container_of(wacom_wac->shared, struct wacom_hdev_data,
575 shared);
576
577 if (wacom_wac->shared->touch == wacom->hdev)
578 wacom_wac->shared->touch = NULL;
579 else if (wacom_wac->shared->pen == wacom->hdev)
580 wacom_wac->shared->pen = NULL;
581
582 kref_put(&data->kref, wacom_release_shared_data);
583 wacom_wac->shared = NULL;
584 }
585 }
586
587 static int wacom_led_control(struct wacom *wacom)
588 {
589 unsigned char *buf;
590 int retval;
591 unsigned char report_id = WAC_CMD_LED_CONTROL;
592 int buf_size = 9;
593
594 if (wacom->wacom_wac.pid) { /* wireless connected */
595 report_id = WAC_CMD_WL_LED_CONTROL;
596 buf_size = 13;
597 }
598 buf = kzalloc(buf_size, GFP_KERNEL);
599 if (!buf)
600 return -ENOMEM;
601
602 if (wacom->wacom_wac.features.type >= INTUOS5S &&
603 wacom->wacom_wac.features.type <= INTUOSPL) {
604 /*
605 * Touch Ring and crop mark LED luminance may take on
606 * one of four values:
607 * 0 = Low; 1 = Medium; 2 = High; 3 = Off
608 */
609 int ring_led = wacom->led.select[0] & 0x03;
610 int ring_lum = (((wacom->led.llv & 0x60) >> 5) - 1) & 0x03;
611 int crop_lum = 0;
612 unsigned char led_bits = (crop_lum << 4) | (ring_lum << 2) | (ring_led);
613
614 buf[0] = report_id;
615 if (wacom->wacom_wac.pid) {
616 wacom_get_report(wacom->hdev, HID_FEATURE_REPORT,
617 buf, buf_size, WAC_CMD_RETRIES);
618 buf[0] = report_id;
619 buf[4] = led_bits;
620 } else
621 buf[1] = led_bits;
622 }
623 else {
624 int led = wacom->led.select[0] | 0x4;
625
626 if (wacom->wacom_wac.features.type == WACOM_21UX2 ||
627 wacom->wacom_wac.features.type == WACOM_24HD)
628 led |= (wacom->led.select[1] << 4) | 0x40;
629
630 buf[0] = report_id;
631 buf[1] = led;
632 buf[2] = wacom->led.llv;
633 buf[3] = wacom->led.hlv;
634 buf[4] = wacom->led.img_lum;
635 }
636
637 retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, buf_size,
638 WAC_CMD_RETRIES);
639 kfree(buf);
640
641 return retval;
642 }
643
644 static int wacom_led_putimage(struct wacom *wacom, int button_id, u8 xfer_id,
645 const unsigned len, const void *img)
646 {
647 unsigned char *buf;
648 int i, retval;
649 const unsigned chunk_len = len / 4; /* 4 chunks are needed to be sent */
650
651 buf = kzalloc(chunk_len + 3 , GFP_KERNEL);
652 if (!buf)
653 return -ENOMEM;
654
655 /* Send 'start' command */
656 buf[0] = WAC_CMD_ICON_START;
657 buf[1] = 1;
658 retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
659 WAC_CMD_RETRIES);
660 if (retval < 0)
661 goto out;
662
663 buf[0] = xfer_id;
664 buf[1] = button_id & 0x07;
665 for (i = 0; i < 4; i++) {
666 buf[2] = i;
667 memcpy(buf + 3, img + i * chunk_len, chunk_len);
668
669 retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT,
670 buf, chunk_len + 3, WAC_CMD_RETRIES);
671 if (retval < 0)
672 break;
673 }
674
675 /* Send 'stop' */
676 buf[0] = WAC_CMD_ICON_START;
677 buf[1] = 0;
678 wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
679 WAC_CMD_RETRIES);
680
681 out:
682 kfree(buf);
683 return retval;
684 }
685
686 static ssize_t wacom_led_select_store(struct device *dev, int set_id,
687 const char *buf, size_t count)
688 {
689 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
690 struct wacom *wacom = hid_get_drvdata(hdev);
691 unsigned int id;
692 int err;
693
694 err = kstrtouint(buf, 10, &id);
695 if (err)
696 return err;
697
698 mutex_lock(&wacom->lock);
699
700 wacom->led.select[set_id] = id & 0x3;
701 err = wacom_led_control(wacom);
702
703 mutex_unlock(&wacom->lock);
704
705 return err < 0 ? err : count;
706 }
707
708 #define DEVICE_LED_SELECT_ATTR(SET_ID) \
709 static ssize_t wacom_led##SET_ID##_select_store(struct device *dev, \
710 struct device_attribute *attr, const char *buf, size_t count) \
711 { \
712 return wacom_led_select_store(dev, SET_ID, buf, count); \
713 } \
714 static ssize_t wacom_led##SET_ID##_select_show(struct device *dev, \
715 struct device_attribute *attr, char *buf) \
716 { \
717 struct hid_device *hdev = container_of(dev, struct hid_device, dev);\
718 struct wacom *wacom = hid_get_drvdata(hdev); \
719 return scnprintf(buf, PAGE_SIZE, "%d\n", \
720 wacom->led.select[SET_ID]); \
721 } \
722 static DEVICE_ATTR(status_led##SET_ID##_select, DEV_ATTR_RW_PERM, \
723 wacom_led##SET_ID##_select_show, \
724 wacom_led##SET_ID##_select_store)
725
726 DEVICE_LED_SELECT_ATTR(0);
727 DEVICE_LED_SELECT_ATTR(1);
728
729 static ssize_t wacom_luminance_store(struct wacom *wacom, u8 *dest,
730 const char *buf, size_t count)
731 {
732 unsigned int value;
733 int err;
734
735 err = kstrtouint(buf, 10, &value);
736 if (err)
737 return err;
738
739 mutex_lock(&wacom->lock);
740
741 *dest = value & 0x7f;
742 err = wacom_led_control(wacom);
743
744 mutex_unlock(&wacom->lock);
745
746 return err < 0 ? err : count;
747 }
748
749 #define DEVICE_LUMINANCE_ATTR(name, field) \
750 static ssize_t wacom_##name##_luminance_store(struct device *dev, \
751 struct device_attribute *attr, const char *buf, size_t count) \
752 { \
753 struct hid_device *hdev = container_of(dev, struct hid_device, dev);\
754 struct wacom *wacom = hid_get_drvdata(hdev); \
755 \
756 return wacom_luminance_store(wacom, &wacom->led.field, \
757 buf, count); \
758 } \
759 static ssize_t wacom_##name##_luminance_show(struct device *dev, \
760 struct device_attribute *attr, char *buf) \
761 { \
762 struct wacom *wacom = dev_get_drvdata(dev); \
763 return scnprintf(buf, PAGE_SIZE, "%d\n", wacom->led.field); \
764 } \
765 static DEVICE_ATTR(name##_luminance, DEV_ATTR_RW_PERM, \
766 wacom_##name##_luminance_show, \
767 wacom_##name##_luminance_store)
768
769 DEVICE_LUMINANCE_ATTR(status0, llv);
770 DEVICE_LUMINANCE_ATTR(status1, hlv);
771 DEVICE_LUMINANCE_ATTR(buttons, img_lum);
772
773 static ssize_t wacom_button_image_store(struct device *dev, int button_id,
774 const char *buf, size_t count)
775 {
776 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
777 struct wacom *wacom = hid_get_drvdata(hdev);
778 int err;
779 unsigned len;
780 u8 xfer_id;
781
782 if (hdev->bus == BUS_BLUETOOTH) {
783 len = 256;
784 xfer_id = WAC_CMD_ICON_BT_XFER;
785 } else {
786 len = 1024;
787 xfer_id = WAC_CMD_ICON_XFER;
788 }
789
790 if (count != len)
791 return -EINVAL;
792
793 mutex_lock(&wacom->lock);
794
795 err = wacom_led_putimage(wacom, button_id, xfer_id, len, buf);
796
797 mutex_unlock(&wacom->lock);
798
799 return err < 0 ? err : count;
800 }
801
802 #define DEVICE_BTNIMG_ATTR(BUTTON_ID) \
803 static ssize_t wacom_btnimg##BUTTON_ID##_store(struct device *dev, \
804 struct device_attribute *attr, const char *buf, size_t count) \
805 { \
806 return wacom_button_image_store(dev, BUTTON_ID, buf, count); \
807 } \
808 static DEVICE_ATTR(button##BUTTON_ID##_rawimg, DEV_ATTR_WO_PERM, \
809 NULL, wacom_btnimg##BUTTON_ID##_store)
810
811 DEVICE_BTNIMG_ATTR(0);
812 DEVICE_BTNIMG_ATTR(1);
813 DEVICE_BTNIMG_ATTR(2);
814 DEVICE_BTNIMG_ATTR(3);
815 DEVICE_BTNIMG_ATTR(4);
816 DEVICE_BTNIMG_ATTR(5);
817 DEVICE_BTNIMG_ATTR(6);
818 DEVICE_BTNIMG_ATTR(7);
819
820 static struct attribute *cintiq_led_attrs[] = {
821 &dev_attr_status_led0_select.attr,
822 &dev_attr_status_led1_select.attr,
823 NULL
824 };
825
826 static struct attribute_group cintiq_led_attr_group = {
827 .name = "wacom_led",
828 .attrs = cintiq_led_attrs,
829 };
830
831 static struct attribute *intuos4_led_attrs[] = {
832 &dev_attr_status0_luminance.attr,
833 &dev_attr_status1_luminance.attr,
834 &dev_attr_status_led0_select.attr,
835 &dev_attr_buttons_luminance.attr,
836 &dev_attr_button0_rawimg.attr,
837 &dev_attr_button1_rawimg.attr,
838 &dev_attr_button2_rawimg.attr,
839 &dev_attr_button3_rawimg.attr,
840 &dev_attr_button4_rawimg.attr,
841 &dev_attr_button5_rawimg.attr,
842 &dev_attr_button6_rawimg.attr,
843 &dev_attr_button7_rawimg.attr,
844 NULL
845 };
846
847 static struct attribute_group intuos4_led_attr_group = {
848 .name = "wacom_led",
849 .attrs = intuos4_led_attrs,
850 };
851
852 static struct attribute *intuos5_led_attrs[] = {
853 &dev_attr_status0_luminance.attr,
854 &dev_attr_status_led0_select.attr,
855 NULL
856 };
857
858 static struct attribute_group intuos5_led_attr_group = {
859 .name = "wacom_led",
860 .attrs = intuos5_led_attrs,
861 };
862
863 static int wacom_initialize_leds(struct wacom *wacom)
864 {
865 int error;
866
867 if (!(wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD))
868 return 0;
869
870 /* Initialize default values */
871 switch (wacom->wacom_wac.features.type) {
872 case INTUOS4S:
873 case INTUOS4:
874 case INTUOS4WL:
875 case INTUOS4L:
876 wacom->led.select[0] = 0;
877 wacom->led.select[1] = 0;
878 wacom->led.llv = 10;
879 wacom->led.hlv = 20;
880 wacom->led.img_lum = 10;
881 error = sysfs_create_group(&wacom->hdev->dev.kobj,
882 &intuos4_led_attr_group);
883 break;
884
885 case WACOM_24HD:
886 case WACOM_21UX2:
887 wacom->led.select[0] = 0;
888 wacom->led.select[1] = 0;
889 wacom->led.llv = 0;
890 wacom->led.hlv = 0;
891 wacom->led.img_lum = 0;
892
893 error = sysfs_create_group(&wacom->hdev->dev.kobj,
894 &cintiq_led_attr_group);
895 break;
896
897 case INTUOS5S:
898 case INTUOS5:
899 case INTUOS5L:
900 case INTUOSPS:
901 case INTUOSPM:
902 case INTUOSPL:
903 wacom->led.select[0] = 0;
904 wacom->led.select[1] = 0;
905 wacom->led.llv = 32;
906 wacom->led.hlv = 0;
907 wacom->led.img_lum = 0;
908
909 error = sysfs_create_group(&wacom->hdev->dev.kobj,
910 &intuos5_led_attr_group);
911 break;
912
913 default:
914 return 0;
915 }
916
917 if (error) {
918 hid_err(wacom->hdev,
919 "cannot create sysfs group err: %d\n", error);
920 return error;
921 }
922 wacom_led_control(wacom);
923 wacom->led_initialized = true;
924
925 return 0;
926 }
927
928 static void wacom_destroy_leds(struct wacom *wacom)
929 {
930 if (!wacom->led_initialized)
931 return;
932
933 if (!(wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD))
934 return;
935
936 wacom->led_initialized = false;
937
938 switch (wacom->wacom_wac.features.type) {
939 case INTUOS4S:
940 case INTUOS4:
941 case INTUOS4WL:
942 case INTUOS4L:
943 sysfs_remove_group(&wacom->hdev->dev.kobj,
944 &intuos4_led_attr_group);
945 break;
946
947 case WACOM_24HD:
948 case WACOM_21UX2:
949 sysfs_remove_group(&wacom->hdev->dev.kobj,
950 &cintiq_led_attr_group);
951 break;
952
953 case INTUOS5S:
954 case INTUOS5:
955 case INTUOS5L:
956 case INTUOSPS:
957 case INTUOSPM:
958 case INTUOSPL:
959 sysfs_remove_group(&wacom->hdev->dev.kobj,
960 &intuos5_led_attr_group);
961 break;
962 }
963 }
964
965 static enum power_supply_property wacom_battery_props[] = {
966 POWER_SUPPLY_PROP_PRESENT,
967 POWER_SUPPLY_PROP_STATUS,
968 POWER_SUPPLY_PROP_SCOPE,
969 POWER_SUPPLY_PROP_CAPACITY
970 };
971
972 static enum power_supply_property wacom_ac_props[] = {
973 POWER_SUPPLY_PROP_PRESENT,
974 POWER_SUPPLY_PROP_ONLINE,
975 POWER_SUPPLY_PROP_SCOPE,
976 };
977
978 static int wacom_battery_get_property(struct power_supply *psy,
979 enum power_supply_property psp,
980 union power_supply_propval *val)
981 {
982 struct wacom *wacom = power_supply_get_drvdata(psy);
983 int ret = 0;
984
985 switch (psp) {
986 case POWER_SUPPLY_PROP_PRESENT:
987 val->intval = wacom->wacom_wac.bat_connected;
988 break;
989 case POWER_SUPPLY_PROP_SCOPE:
990 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
991 break;
992 case POWER_SUPPLY_PROP_CAPACITY:
993 val->intval =
994 wacom->wacom_wac.battery_capacity;
995 break;
996 case POWER_SUPPLY_PROP_STATUS:
997 if (wacom->wacom_wac.bat_charging)
998 val->intval = POWER_SUPPLY_STATUS_CHARGING;
999 else if (wacom->wacom_wac.battery_capacity == 100 &&
1000 wacom->wacom_wac.ps_connected)
1001 val->intval = POWER_SUPPLY_STATUS_FULL;
1002 else if (wacom->wacom_wac.ps_connected)
1003 val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
1004 else
1005 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
1006 break;
1007 default:
1008 ret = -EINVAL;
1009 break;
1010 }
1011
1012 return ret;
1013 }
1014
1015 static int wacom_ac_get_property(struct power_supply *psy,
1016 enum power_supply_property psp,
1017 union power_supply_propval *val)
1018 {
1019 struct wacom *wacom = power_supply_get_drvdata(psy);
1020 int ret = 0;
1021
1022 switch (psp) {
1023 case POWER_SUPPLY_PROP_PRESENT:
1024 /* fall through */
1025 case POWER_SUPPLY_PROP_ONLINE:
1026 val->intval = wacom->wacom_wac.ps_connected;
1027 break;
1028 case POWER_SUPPLY_PROP_SCOPE:
1029 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
1030 break;
1031 default:
1032 ret = -EINVAL;
1033 break;
1034 }
1035 return ret;
1036 }
1037
1038 static int wacom_initialize_battery(struct wacom *wacom)
1039 {
1040 static atomic_t battery_no = ATOMIC_INIT(0);
1041 struct power_supply_config psy_cfg = { .drv_data = wacom, };
1042 unsigned long n;
1043
1044 if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) {
1045 struct power_supply_desc *bat_desc = &wacom->battery_desc;
1046 struct power_supply_desc *ac_desc = &wacom->ac_desc;
1047 n = atomic_inc_return(&battery_no) - 1;
1048
1049 bat_desc->properties = wacom_battery_props;
1050 bat_desc->num_properties = ARRAY_SIZE(wacom_battery_props);
1051 bat_desc->get_property = wacom_battery_get_property;
1052 sprintf(wacom->wacom_wac.bat_name, "wacom_battery_%ld", n);
1053 bat_desc->name = wacom->wacom_wac.bat_name;
1054 bat_desc->type = POWER_SUPPLY_TYPE_BATTERY;
1055 bat_desc->use_for_apm = 0;
1056
1057 ac_desc->properties = wacom_ac_props;
1058 ac_desc->num_properties = ARRAY_SIZE(wacom_ac_props);
1059 ac_desc->get_property = wacom_ac_get_property;
1060 sprintf(wacom->wacom_wac.ac_name, "wacom_ac_%ld", n);
1061 ac_desc->name = wacom->wacom_wac.ac_name;
1062 ac_desc->type = POWER_SUPPLY_TYPE_MAINS;
1063 ac_desc->use_for_apm = 0;
1064
1065 wacom->battery = power_supply_register(&wacom->hdev->dev,
1066 &wacom->battery_desc, &psy_cfg);
1067 if (IS_ERR(wacom->battery))
1068 return PTR_ERR(wacom->battery);
1069
1070 power_supply_powers(wacom->battery, &wacom->hdev->dev);
1071
1072 wacom->ac = power_supply_register(&wacom->hdev->dev,
1073 &wacom->ac_desc,
1074 &psy_cfg);
1075 if (IS_ERR(wacom->ac)) {
1076 power_supply_unregister(wacom->battery);
1077 return PTR_ERR(wacom->ac);
1078 }
1079
1080 power_supply_powers(wacom->ac, &wacom->hdev->dev);
1081 }
1082
1083 return 0;
1084 }
1085
1086 static void wacom_destroy_battery(struct wacom *wacom)
1087 {
1088 if (wacom->battery) {
1089 power_supply_unregister(wacom->battery);
1090 wacom->battery = NULL;
1091 power_supply_unregister(wacom->ac);
1092 wacom->ac = NULL;
1093 }
1094 }
1095
1096 static ssize_t wacom_show_speed(struct device *dev,
1097 struct device_attribute
1098 *attr, char *buf)
1099 {
1100 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1101 struct wacom *wacom = hid_get_drvdata(hdev);
1102
1103 return snprintf(buf, PAGE_SIZE, "%i\n", wacom->wacom_wac.bt_high_speed);
1104 }
1105
1106 static ssize_t wacom_store_speed(struct device *dev,
1107 struct device_attribute *attr,
1108 const char *buf, size_t count)
1109 {
1110 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1111 struct wacom *wacom = hid_get_drvdata(hdev);
1112 u8 new_speed;
1113
1114 if (kstrtou8(buf, 0, &new_speed))
1115 return -EINVAL;
1116
1117 if (new_speed != 0 && new_speed != 1)
1118 return -EINVAL;
1119
1120 wacom_bt_query_tablet_data(hdev, new_speed, &wacom->wacom_wac.features);
1121
1122 return count;
1123 }
1124
1125 static DEVICE_ATTR(speed, DEV_ATTR_RW_PERM,
1126 wacom_show_speed, wacom_store_speed);
1127
1128
1129 static ssize_t wacom_show_remote_mode(struct kobject *kobj,
1130 struct kobj_attribute *kattr,
1131 char *buf, int index)
1132 {
1133 struct device *dev = container_of(kobj->parent, struct device, kobj);
1134 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1135 struct wacom *wacom = hid_get_drvdata(hdev);
1136 u8 mode;
1137
1138 mode = wacom->led.select[index];
1139 if (mode >= 0 && mode < 3)
1140 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
1141 else
1142 return snprintf(buf, PAGE_SIZE, "%d\n", -1);
1143 }
1144
1145 #define DEVICE_EKR_ATTR_GROUP(SET_ID) \
1146 static ssize_t wacom_show_remote##SET_ID##_mode(struct kobject *kobj, \
1147 struct kobj_attribute *kattr, char *buf) \
1148 { \
1149 return wacom_show_remote_mode(kobj, kattr, buf, SET_ID); \
1150 } \
1151 static struct kobj_attribute remote##SET_ID##_mode_attr = { \
1152 .attr = {.name = "remote_mode", \
1153 .mode = DEV_ATTR_RO_PERM}, \
1154 .show = wacom_show_remote##SET_ID##_mode, \
1155 }; \
1156 static struct attribute *remote##SET_ID##_serial_attrs[] = { \
1157 &remote##SET_ID##_mode_attr.attr, \
1158 NULL \
1159 }; \
1160 static struct attribute_group remote##SET_ID##_serial_group = { \
1161 .name = NULL, \
1162 .attrs = remote##SET_ID##_serial_attrs, \
1163 }
1164
1165 DEVICE_EKR_ATTR_GROUP(0);
1166 DEVICE_EKR_ATTR_GROUP(1);
1167 DEVICE_EKR_ATTR_GROUP(2);
1168 DEVICE_EKR_ATTR_GROUP(3);
1169 DEVICE_EKR_ATTR_GROUP(4);
1170
1171 int wacom_remote_create_attr_group(struct wacom *wacom, __u32 serial, int index)
1172 {
1173 int error = 0;
1174 char *buf;
1175 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1176
1177 wacom_wac->serial[index] = serial;
1178
1179 buf = kzalloc(WAC_REMOTE_SERIAL_MAX_STRLEN, GFP_KERNEL);
1180 if (!buf)
1181 return -ENOMEM;
1182 snprintf(buf, WAC_REMOTE_SERIAL_MAX_STRLEN, "%d", serial);
1183 wacom->remote_group[index].name = buf;
1184
1185 error = sysfs_create_group(wacom->remote_dir,
1186 &wacom->remote_group[index]);
1187 if (error) {
1188 hid_err(wacom->hdev,
1189 "cannot create sysfs group err: %d\n", error);
1190 kobject_put(wacom->remote_dir);
1191 return error;
1192 }
1193
1194 return 0;
1195 }
1196
1197 void wacom_remote_destroy_attr_group(struct wacom *wacom, __u32 serial)
1198 {
1199 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1200 int i;
1201
1202 if (!serial)
1203 return;
1204
1205 for (i = 0; i < WACOM_MAX_REMOTES; i++) {
1206 if (wacom_wac->serial[i] == serial) {
1207 wacom_wac->serial[i] = 0;
1208 wacom->led.select[i] = WACOM_STATUS_UNKNOWN;
1209 if (wacom->remote_group[i].name) {
1210 sysfs_remove_group(wacom->remote_dir,
1211 &wacom->remote_group[i]);
1212 kfree(wacom->remote_group[i].name);
1213 wacom->remote_group[i].name = NULL;
1214 }
1215 }
1216 }
1217 }
1218
1219 static int wacom_cmd_unpair_remote(struct wacom *wacom, unsigned char selector)
1220 {
1221 const size_t buf_size = 2;
1222 unsigned char *buf;
1223 int retval;
1224
1225 buf = kzalloc(buf_size, GFP_KERNEL);
1226 if (!buf)
1227 return -ENOMEM;
1228
1229 buf[0] = WAC_CMD_DELETE_PAIRING;
1230 buf[1] = selector;
1231
1232 retval = wacom_set_report(wacom->hdev, HID_OUTPUT_REPORT, buf,
1233 buf_size, WAC_CMD_RETRIES);
1234 kfree(buf);
1235
1236 return retval;
1237 }
1238
1239 static ssize_t wacom_store_unpair_remote(struct kobject *kobj,
1240 struct kobj_attribute *attr,
1241 const char *buf, size_t count)
1242 {
1243 unsigned char selector = 0;
1244 struct device *dev = container_of(kobj->parent, struct device, kobj);
1245 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1246 struct wacom *wacom = hid_get_drvdata(hdev);
1247 int err;
1248
1249 if (!strncmp(buf, "*\n", 2)) {
1250 selector = WAC_CMD_UNPAIR_ALL;
1251 } else {
1252 hid_info(wacom->hdev, "remote: unrecognized unpair code: %s\n",
1253 buf);
1254 return -1;
1255 }
1256
1257 mutex_lock(&wacom->lock);
1258
1259 err = wacom_cmd_unpair_remote(wacom, selector);
1260 mutex_unlock(&wacom->lock);
1261
1262 return err < 0 ? err : count;
1263 }
1264
1265 static struct kobj_attribute unpair_remote_attr = {
1266 .attr = {.name = "unpair_remote", .mode = 0200},
1267 .store = wacom_store_unpair_remote,
1268 };
1269
1270 static const struct attribute *remote_unpair_attrs[] = {
1271 &unpair_remote_attr.attr,
1272 NULL
1273 };
1274
1275 static int wacom_initialize_remote(struct wacom *wacom)
1276 {
1277 int error = 0;
1278 struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1279 int i;
1280
1281 if (wacom->wacom_wac.features.type != REMOTE)
1282 return 0;
1283
1284 wacom->remote_group[0] = remote0_serial_group;
1285 wacom->remote_group[1] = remote1_serial_group;
1286 wacom->remote_group[2] = remote2_serial_group;
1287 wacom->remote_group[3] = remote3_serial_group;
1288 wacom->remote_group[4] = remote4_serial_group;
1289
1290 wacom->remote_dir = kobject_create_and_add("wacom_remote",
1291 &wacom->hdev->dev.kobj);
1292 if (!wacom->remote_dir)
1293 return -ENOMEM;
1294
1295 error = sysfs_create_files(wacom->remote_dir, remote_unpair_attrs);
1296
1297 if (error) {
1298 hid_err(wacom->hdev,
1299 "cannot create sysfs group err: %d\n", error);
1300 return error;
1301 }
1302
1303 for (i = 0; i < WACOM_MAX_REMOTES; i++) {
1304 wacom->led.select[i] = WACOM_STATUS_UNKNOWN;
1305 wacom_wac->serial[i] = 0;
1306 }
1307
1308 return 0;
1309 }
1310
1311 static struct input_dev *wacom_allocate_input(struct wacom *wacom)
1312 {
1313 struct input_dev *input_dev;
1314 struct hid_device *hdev = wacom->hdev;
1315 struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1316
1317 input_dev = input_allocate_device();
1318 if (!input_dev)
1319 return NULL;
1320
1321 input_dev->name = wacom_wac->features.name;
1322 input_dev->phys = hdev->phys;
1323 input_dev->dev.parent = &hdev->dev;
1324 input_dev->open = wacom_open;
1325 input_dev->close = wacom_close;
1326 input_dev->uniq = hdev->uniq;
1327 input_dev->id.bustype = hdev->bus;
1328 input_dev->id.vendor = hdev->vendor;
1329 input_dev->id.product = wacom_wac->pid ? wacom_wac->pid : hdev->product;
1330 input_dev->id.version = hdev->version;
1331 input_set_drvdata(input_dev, wacom);
1332
1333 return input_dev;
1334 }
1335
1336 static void wacom_clean_inputs(struct wacom *wacom)
1337 {
1338 if (wacom->wacom_wac.pen_input) {
1339 if (wacom->wacom_wac.pen_registered)
1340 input_unregister_device(wacom->wacom_wac.pen_input);
1341 else
1342 input_free_device(wacom->wacom_wac.pen_input);
1343 }
1344 if (wacom->wacom_wac.touch_input) {
1345 if (wacom->wacom_wac.touch_registered)
1346 input_unregister_device(wacom->wacom_wac.touch_input);
1347 else
1348 input_free_device(wacom->wacom_wac.touch_input);
1349 }
1350 if (wacom->wacom_wac.pad_input) {
1351 if (wacom->wacom_wac.pad_registered)
1352 input_unregister_device(wacom->wacom_wac.pad_input);
1353 else
1354 input_free_device(wacom->wacom_wac.pad_input);
1355 }
1356 if (wacom->remote_dir)
1357 kobject_put(wacom->remote_dir);
1358 wacom->wacom_wac.pen_input = NULL;
1359 wacom->wacom_wac.touch_input = NULL;
1360 wacom->wacom_wac.pad_input = NULL;
1361 wacom_destroy_leds(wacom);
1362 }
1363
1364 static int wacom_allocate_inputs(struct wacom *wacom)
1365 {
1366 struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1367
1368 wacom_wac->pen_input = wacom_allocate_input(wacom);
1369 wacom_wac->touch_input = wacom_allocate_input(wacom);
1370 wacom_wac->pad_input = wacom_allocate_input(wacom);
1371 if (!wacom_wac->pen_input || !wacom_wac->touch_input || !wacom_wac->pad_input) {
1372 wacom_clean_inputs(wacom);
1373 return -ENOMEM;
1374 }
1375
1376 wacom_wac->pen_input->name = wacom_wac->pen_name;
1377 wacom_wac->touch_input->name = wacom_wac->touch_name;
1378 wacom_wac->pad_input->name = wacom_wac->pad_name;
1379
1380 return 0;
1381 }
1382
1383 static int wacom_register_inputs(struct wacom *wacom)
1384 {
1385 struct input_dev *pen_input_dev, *touch_input_dev, *pad_input_dev;
1386 struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1387 int error = 0;
1388
1389 pen_input_dev = wacom_wac->pen_input;
1390 touch_input_dev = wacom_wac->touch_input;
1391 pad_input_dev = wacom_wac->pad_input;
1392
1393 if (!pen_input_dev || !touch_input_dev || !pad_input_dev)
1394 return -EINVAL;
1395
1396 error = wacom_setup_pen_input_capabilities(pen_input_dev, wacom_wac);
1397 if (error) {
1398 /* no pen in use on this interface */
1399 input_free_device(pen_input_dev);
1400 wacom_wac->pen_input = NULL;
1401 pen_input_dev = NULL;
1402 } else {
1403 error = input_register_device(pen_input_dev);
1404 if (error)
1405 goto fail_register_pen_input;
1406 wacom_wac->pen_registered = true;
1407 }
1408
1409 error = wacom_setup_touch_input_capabilities(touch_input_dev, wacom_wac);
1410 if (error) {
1411 /* no touch in use on this interface */
1412 input_free_device(touch_input_dev);
1413 wacom_wac->touch_input = NULL;
1414 touch_input_dev = NULL;
1415 } else {
1416 error = input_register_device(touch_input_dev);
1417 if (error)
1418 goto fail_register_touch_input;
1419 wacom_wac->touch_registered = true;
1420 }
1421
1422 error = wacom_setup_pad_input_capabilities(pad_input_dev, wacom_wac);
1423 if (error) {
1424 /* no pad in use on this interface */
1425 input_free_device(pad_input_dev);
1426 wacom_wac->pad_input = NULL;
1427 pad_input_dev = NULL;
1428 } else {
1429 error = input_register_device(pad_input_dev);
1430 if (error)
1431 goto fail_register_pad_input;
1432 wacom_wac->pad_registered = true;
1433
1434 error = wacom_initialize_leds(wacom);
1435 if (error)
1436 goto fail_leds;
1437
1438 error = wacom_initialize_remote(wacom);
1439 if (error)
1440 goto fail_remote;
1441 }
1442
1443 return 0;
1444
1445 fail_remote:
1446 wacom_destroy_leds(wacom);
1447 fail_leds:
1448 input_unregister_device(pad_input_dev);
1449 pad_input_dev = NULL;
1450 wacom_wac->pad_registered = false;
1451 fail_register_pad_input:
1452 if (touch_input_dev)
1453 input_unregister_device(touch_input_dev);
1454 wacom_wac->touch_input = NULL;
1455 wacom_wac->touch_registered = false;
1456 fail_register_touch_input:
1457 if (pen_input_dev)
1458 input_unregister_device(pen_input_dev);
1459 wacom_wac->pen_input = NULL;
1460 wacom_wac->pen_registered = false;
1461 fail_register_pen_input:
1462 return error;
1463 }
1464
1465 /*
1466 * Not all devices report physical dimensions from HID.
1467 * Compute the default from hardcoded logical dimension
1468 * and resolution before driver overwrites them.
1469 */
1470 static void wacom_set_default_phy(struct wacom_features *features)
1471 {
1472 if (features->x_resolution) {
1473 features->x_phy = (features->x_max * 100) /
1474 features->x_resolution;
1475 features->y_phy = (features->y_max * 100) /
1476 features->y_resolution;
1477 }
1478 }
1479
1480 static void wacom_calculate_res(struct wacom_features *features)
1481 {
1482 /* set unit to "100th of a mm" for devices not reported by HID */
1483 if (!features->unit) {
1484 features->unit = 0x11;
1485 features->unitExpo = -3;
1486 }
1487
1488 features->x_resolution = wacom_calc_hid_res(features->x_max,
1489 features->x_phy,
1490 features->unit,
1491 features->unitExpo);
1492 features->y_resolution = wacom_calc_hid_res(features->y_max,
1493 features->y_phy,
1494 features->unit,
1495 features->unitExpo);
1496 }
1497
1498 static void wacom_wireless_work(struct work_struct *work)
1499 {
1500 struct wacom *wacom = container_of(work, struct wacom, work);
1501 struct usb_device *usbdev = wacom->usbdev;
1502 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1503 struct hid_device *hdev1, *hdev2;
1504 struct wacom *wacom1, *wacom2;
1505 struct wacom_wac *wacom_wac1, *wacom_wac2;
1506 int error;
1507
1508 /*
1509 * Regardless if this is a disconnect or a new tablet,
1510 * remove any existing input and battery devices.
1511 */
1512
1513 wacom_destroy_battery(wacom);
1514
1515 /* Stylus interface */
1516 hdev1 = usb_get_intfdata(usbdev->config->interface[1]);
1517 wacom1 = hid_get_drvdata(hdev1);
1518 wacom_wac1 = &(wacom1->wacom_wac);
1519 wacom_clean_inputs(wacom1);
1520
1521 /* Touch interface */
1522 hdev2 = usb_get_intfdata(usbdev->config->interface[2]);
1523 wacom2 = hid_get_drvdata(hdev2);
1524 wacom_wac2 = &(wacom2->wacom_wac);
1525 wacom_clean_inputs(wacom2);
1526
1527 if (wacom_wac->pid == 0) {
1528 hid_info(wacom->hdev, "wireless tablet disconnected\n");
1529 wacom_wac1->shared->type = 0;
1530 } else {
1531 const struct hid_device_id *id = wacom_ids;
1532
1533 hid_info(wacom->hdev, "wireless tablet connected with PID %x\n",
1534 wacom_wac->pid);
1535
1536 while (id->bus) {
1537 if (id->vendor == USB_VENDOR_ID_WACOM &&
1538 id->product == wacom_wac->pid)
1539 break;
1540 id++;
1541 }
1542
1543 if (!id->bus) {
1544 hid_info(wacom->hdev, "ignoring unknown PID.\n");
1545 return;
1546 }
1547
1548 /* Stylus interface */
1549 wacom_wac1->features =
1550 *((struct wacom_features *)id->driver_data);
1551 wacom_wac1->features.device_type |= WACOM_DEVICETYPE_PEN;
1552 wacom_set_default_phy(&wacom_wac1->features);
1553 wacom_calculate_res(&wacom_wac1->features);
1554 snprintf(wacom_wac1->pen_name, WACOM_NAME_MAX, "%s (WL) Pen",
1555 wacom_wac1->features.name);
1556 if (wacom_wac1->features.type < BAMBOO_PEN ||
1557 wacom_wac1->features.type > BAMBOO_PT) {
1558 snprintf(wacom_wac1->pad_name, WACOM_NAME_MAX, "%s (WL) Pad",
1559 wacom_wac1->features.name);
1560 wacom_wac1->features.device_type |= WACOM_DEVICETYPE_PAD;
1561 }
1562 wacom_wac1->shared->touch_max = wacom_wac1->features.touch_max;
1563 wacom_wac1->shared->type = wacom_wac1->features.type;
1564 wacom_wac1->pid = wacom_wac->pid;
1565 error = wacom_allocate_inputs(wacom1) ||
1566 wacom_register_inputs(wacom1);
1567 if (error)
1568 goto fail;
1569
1570 /* Touch interface */
1571 if (wacom_wac1->features.touch_max ||
1572 (wacom_wac1->features.type >= INTUOSHT &&
1573 wacom_wac1->features.type <= BAMBOO_PT)) {
1574 wacom_wac2->features =
1575 *((struct wacom_features *)id->driver_data);
1576 wacom_wac2->features.pktlen = WACOM_PKGLEN_BBTOUCH3;
1577 wacom_set_default_phy(&wacom_wac2->features);
1578 wacom_wac2->features.x_max = wacom_wac2->features.y_max = 4096;
1579 wacom_calculate_res(&wacom_wac2->features);
1580 snprintf(wacom_wac2->touch_name, WACOM_NAME_MAX,
1581 "%s (WL) Finger",wacom_wac2->features.name);
1582 if (wacom_wac1->features.touch_max)
1583 wacom_wac2->features.device_type |= WACOM_DEVICETYPE_TOUCH;
1584 if (wacom_wac1->features.type >= INTUOSHT &&
1585 wacom_wac1->features.type <= BAMBOO_PT) {
1586 snprintf(wacom_wac2->pad_name, WACOM_NAME_MAX,
1587 "%s (WL) Pad",wacom_wac2->features.name);
1588 wacom_wac2->features.device_type |= WACOM_DEVICETYPE_PAD;
1589 }
1590 wacom_wac2->pid = wacom_wac->pid;
1591 error = wacom_allocate_inputs(wacom2) ||
1592 wacom_register_inputs(wacom2);
1593 if (error)
1594 goto fail;
1595
1596 if ((wacom_wac1->features.type == INTUOSHT ||
1597 wacom_wac1->features.type == INTUOSHT2) &&
1598 wacom_wac1->features.touch_max)
1599 wacom_wac->shared->touch_input = wacom_wac2->touch_input;
1600 }
1601
1602 error = wacom_initialize_battery(wacom);
1603 if (error)
1604 goto fail;
1605 }
1606
1607 return;
1608
1609 fail:
1610 wacom_clean_inputs(wacom1);
1611 wacom_clean_inputs(wacom2);
1612 return;
1613 }
1614
1615 void wacom_battery_work(struct work_struct *work)
1616 {
1617 struct wacom *wacom = container_of(work, struct wacom, work);
1618
1619 if ((wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&
1620 !wacom->battery) {
1621 wacom_initialize_battery(wacom);
1622 }
1623 else if (!(wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&
1624 wacom->battery) {
1625 wacom_destroy_battery(wacom);
1626 }
1627 }
1628
1629 static size_t wacom_compute_pktlen(struct hid_device *hdev)
1630 {
1631 struct hid_report_enum *report_enum;
1632 struct hid_report *report;
1633 size_t size = 0;
1634
1635 report_enum = hdev->report_enum + HID_INPUT_REPORT;
1636
1637 list_for_each_entry(report, &report_enum->report_list, list) {
1638 size_t report_size = hid_report_len(report);
1639 if (report_size > size)
1640 size = report_size;
1641 }
1642
1643 return size;
1644 }
1645
1646 static void wacom_update_name(struct wacom *wacom)
1647 {
1648 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1649 struct wacom_features *features = &wacom_wac->features;
1650 char name[WACOM_NAME_MAX];
1651
1652 /* Generic devices name unspecified */
1653 if ((features->type == HID_GENERIC) && !strcmp("Wacom HID", features->name)) {
1654 if (strstr(wacom->hdev->name, "Wacom") ||
1655 strstr(wacom->hdev->name, "wacom") ||
1656 strstr(wacom->hdev->name, "WACOM")) {
1657 /* name is in HID descriptor, use it */
1658 strlcpy(name, wacom->hdev->name, sizeof(name));
1659
1660 /* strip out excess whitespaces */
1661 while (1) {
1662 char *gap = strstr(name, " ");
1663 if (gap == NULL)
1664 break;
1665 /* shift everything including the terminator */
1666 memmove(gap, gap+1, strlen(gap));
1667 }
1668 /* get rid of trailing whitespace */
1669 if (name[strlen(name)-1] == ' ')
1670 name[strlen(name)-1] = '\0';
1671 } else {
1672 /* no meaningful name retrieved. use product ID */
1673 snprintf(name, sizeof(name),
1674 "%s %X", features->name, wacom->hdev->product);
1675 }
1676 } else {
1677 strlcpy(name, features->name, sizeof(name));
1678 }
1679
1680 /* Append the device type to the name */
1681 snprintf(wacom_wac->pen_name, sizeof(wacom_wac->pen_name),
1682 "%s Pen", name);
1683 snprintf(wacom_wac->touch_name, sizeof(wacom_wac->touch_name),
1684 "%s Finger", name);
1685 snprintf(wacom_wac->pad_name, sizeof(wacom_wac->pad_name),
1686 "%s Pad", name);
1687 }
1688
1689 static int wacom_probe(struct hid_device *hdev,
1690 const struct hid_device_id *id)
1691 {
1692 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
1693 struct usb_device *dev = interface_to_usbdev(intf);
1694 struct wacom *wacom;
1695 struct wacom_wac *wacom_wac;
1696 struct wacom_features *features;
1697 int error;
1698 unsigned int connect_mask = HID_CONNECT_HIDRAW;
1699
1700 if (!id->driver_data)
1701 return -EINVAL;
1702
1703 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1704
1705 /* hid-core sets this quirk for the boot interface */
1706 hdev->quirks &= ~HID_QUIRK_NOGET;
1707
1708 wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
1709 if (!wacom)
1710 return -ENOMEM;
1711
1712 hid_set_drvdata(hdev, wacom);
1713 wacom->hdev = hdev;
1714
1715 /* ask for the report descriptor to be loaded by HID */
1716 error = hid_parse(hdev);
1717 if (error) {
1718 hid_err(hdev, "parse failed\n");
1719 goto fail_parse;
1720 }
1721
1722 wacom_wac = &wacom->wacom_wac;
1723 wacom_wac->features = *((struct wacom_features *)id->driver_data);
1724 features = &wacom_wac->features;
1725 features->pktlen = wacom_compute_pktlen(hdev);
1726 if (features->pktlen > WACOM_PKGLEN_MAX) {
1727 error = -EINVAL;
1728 goto fail_pktlen;
1729 }
1730
1731 if (features->check_for_hid_type && features->hid_type != hdev->type) {
1732 error = -ENODEV;
1733 goto fail_type;
1734 }
1735
1736 wacom->usbdev = dev;
1737 wacom->intf = intf;
1738 mutex_init(&wacom->lock);
1739 INIT_WORK(&wacom->work, wacom_wireless_work);
1740
1741 error = wacom_allocate_inputs(wacom);
1742 if (error)
1743 goto fail_allocate_inputs;
1744
1745 /*
1746 * Bamboo Pad has a generic hid handling for the Pen, and we switch it
1747 * into debug mode for the touch part.
1748 * We ignore the other interfaces.
1749 */
1750 if (features->type == BAMBOO_PAD) {
1751 if (features->pktlen == WACOM_PKGLEN_PENABLED) {
1752 features->type = HID_GENERIC;
1753 } else if ((features->pktlen != WACOM_PKGLEN_BPAD_TOUCH) &&
1754 (features->pktlen != WACOM_PKGLEN_BPAD_TOUCH_USB)) {
1755 error = -ENODEV;
1756 goto fail_shared_data;
1757 }
1758 }
1759
1760 /* set the default size in case we do not get them from hid */
1761 wacom_set_default_phy(features);
1762
1763 /* Retrieve the physical and logical size for touch devices */
1764 wacom_retrieve_hid_descriptor(hdev, features);
1765 wacom_setup_device_quirks(wacom);
1766
1767 if (features->device_type == WACOM_DEVICETYPE_NONE &&
1768 features->type != WIRELESS) {
1769 error = features->type == HID_GENERIC ? -ENODEV : 0;
1770
1771 dev_warn(&hdev->dev, "Unknown device_type for '%s'. %s.",
1772 hdev->name,
1773 error ? "Ignoring" : "Assuming pen");
1774
1775 if (error)
1776 goto fail_shared_data;
1777
1778 features->device_type |= WACOM_DEVICETYPE_PEN;
1779 }
1780
1781 wacom_calculate_res(features);
1782
1783 wacom_update_name(wacom);
1784
1785 error = wacom_add_shared_data(hdev);
1786 if (error)
1787 goto fail_shared_data;
1788
1789 if (!(features->device_type & WACOM_DEVICETYPE_WL_MONITOR) &&
1790 (features->quirks & WACOM_QUIRK_BATTERY)) {
1791 error = wacom_initialize_battery(wacom);
1792 if (error)
1793 goto fail_battery;
1794 }
1795
1796 error = wacom_register_inputs(wacom);
1797 if (error)
1798 goto fail_register_inputs;
1799
1800 if (hdev->bus == BUS_BLUETOOTH) {
1801 error = device_create_file(&hdev->dev, &dev_attr_speed);
1802 if (error)
1803 hid_warn(hdev,
1804 "can't create sysfs speed attribute err: %d\n",
1805 error);
1806 }
1807
1808 if (features->type == HID_GENERIC)
1809 connect_mask |= HID_CONNECT_DRIVER;
1810
1811 /* Regular HID work starts now */
1812 error = hid_hw_start(hdev, connect_mask);
1813 if (error) {
1814 hid_err(hdev, "hw start failed\n");
1815 goto fail_hw_start;
1816 }
1817
1818 /* Note that if query fails it is not a hard failure */
1819 wacom_query_tablet_data(hdev, features);
1820
1821 /* touch only Bamboo doesn't support pen */
1822 if ((features->type == BAMBOO_TOUCH) &&
1823 (features->device_type & WACOM_DEVICETYPE_PEN)) {
1824 error = -ENODEV;
1825 goto fail_hw_start;
1826 }
1827
1828 /* pen only Bamboo neither support touch nor pad */
1829 if ((features->type == BAMBOO_PEN) &&
1830 ((features->device_type & WACOM_DEVICETYPE_TOUCH) ||
1831 (features->device_type & WACOM_DEVICETYPE_PAD))) {
1832 error = -ENODEV;
1833 goto fail_hw_start;
1834 }
1835
1836 if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR)
1837 error = hid_hw_open(hdev);
1838
1839 if ((wacom_wac->features.type == INTUOSHT ||
1840 wacom_wac->features.type == INTUOSHT2) &&
1841 (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH)) {
1842 wacom_wac->shared->touch_input = wacom_wac->touch_input;
1843 }
1844
1845 return 0;
1846
1847 fail_hw_start:
1848 if (hdev->bus == BUS_BLUETOOTH)
1849 device_remove_file(&hdev->dev, &dev_attr_speed);
1850 fail_register_inputs:
1851 wacom_clean_inputs(wacom);
1852 wacom_destroy_battery(wacom);
1853 fail_battery:
1854 wacom_remove_shared_data(wacom);
1855 fail_shared_data:
1856 wacom_clean_inputs(wacom);
1857 fail_allocate_inputs:
1858 fail_type:
1859 fail_pktlen:
1860 fail_parse:
1861 kfree(wacom);
1862 hid_set_drvdata(hdev, NULL);
1863 return error;
1864 }
1865
1866 static void wacom_remove(struct hid_device *hdev)
1867 {
1868 struct wacom *wacom = hid_get_drvdata(hdev);
1869
1870 hid_hw_stop(hdev);
1871
1872 cancel_work_sync(&wacom->work);
1873 wacom_clean_inputs(wacom);
1874 if (hdev->bus == BUS_BLUETOOTH)
1875 device_remove_file(&hdev->dev, &dev_attr_speed);
1876 wacom_destroy_battery(wacom);
1877 wacom_remove_shared_data(wacom);
1878
1879 hid_set_drvdata(hdev, NULL);
1880 kfree(wacom);
1881 }
1882
1883 #ifdef CONFIG_PM
1884 static int wacom_resume(struct hid_device *hdev)
1885 {
1886 struct wacom *wacom = hid_get_drvdata(hdev);
1887 struct wacom_features *features = &wacom->wacom_wac.features;
1888
1889 mutex_lock(&wacom->lock);
1890
1891 /* switch to wacom mode first */
1892 wacom_query_tablet_data(hdev, features);
1893 wacom_led_control(wacom);
1894
1895 mutex_unlock(&wacom->lock);
1896
1897 return 0;
1898 }
1899
1900 static int wacom_reset_resume(struct hid_device *hdev)
1901 {
1902 return wacom_resume(hdev);
1903 }
1904 #endif /* CONFIG_PM */
1905
1906 static struct hid_driver wacom_driver = {
1907 .name = "wacom",
1908 .id_table = wacom_ids,
1909 .probe = wacom_probe,
1910 .remove = wacom_remove,
1911 .report = wacom_wac_report,
1912 #ifdef CONFIG_PM
1913 .resume = wacom_resume,
1914 .reset_resume = wacom_reset_resume,
1915 #endif
1916 .raw_event = wacom_raw_event,
1917 };
1918 module_hid_driver(wacom_driver);
1919
1920 MODULE_VERSION(DRIVER_VERSION);
1921 MODULE_AUTHOR(DRIVER_AUTHOR);
1922 MODULE_DESCRIPTION(DRIVER_DESC);
1923 MODULE_LICENSE(DRIVER_LICENSE);
Linux with added FPC-III support