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
17 #define WAC_MSG_RETRIES 5
18
19 #define WAC_CMD_WL_LED_CONTROL 0x03
20 #define WAC_CMD_LED_CONTROL 0x20
21 #define WAC_CMD_ICON_START 0x21
22 #define WAC_CMD_ICON_XFER 0x23
23 #define WAC_CMD_ICON_BT_XFER 0x26
24 #define WAC_CMD_RETRIES 10
25
26 #define DEV_ATTR_RW_PERM (S_IRUGO | S_IWUSR | S_IWGRP)
27 #define DEV_ATTR_WO_PERM (S_IWUSR | S_IWGRP)
28
wacom_get_report(struct hid_device * hdev,u8 type,u8 * buf,size_t size,unsigned int retries)29 static int wacom_get_report(struct hid_device *hdev, u8 type, u8 *buf,
30 size_t size, unsigned int retries)
31 {
32 int retval;
33
34 do {
35 retval = hid_hw_raw_request(hdev, buf[0], buf, size, type,
36 HID_REQ_GET_REPORT);
37 } while ((retval == -ETIMEDOUT || retval == -EPIPE) && --retries);
38
39 return retval;
40 }
41
wacom_set_report(struct hid_device * hdev,u8 type,u8 * buf,size_t size,unsigned int retries)42 static int wacom_set_report(struct hid_device *hdev, u8 type, u8 *buf,
43 size_t size, unsigned int retries)
44 {
45 int retval;
46
47 do {
48 retval = hid_hw_raw_request(hdev, buf[0], buf, size, type,
49 HID_REQ_SET_REPORT);
50 } while ((retval == -ETIMEDOUT || retval == -EPIPE) && --retries);
51
52 return retval;
53 }
54
wacom_raw_event(struct hid_device * hdev,struct hid_report * report,u8 * raw_data,int size)55 static int wacom_raw_event(struct hid_device *hdev, struct hid_report *report,
56 u8 *raw_data, int size)
57 {
58 struct wacom *wacom = hid_get_drvdata(hdev);
59
60 if (size > WACOM_PKGLEN_MAX)
61 return 1;
62
63 memcpy(wacom->wacom_wac.data, raw_data, size);
64
65 wacom_wac_irq(&wacom->wacom_wac, size);
66
67 return 0;
68 }
69
wacom_open(struct input_dev * dev)70 static int wacom_open(struct input_dev *dev)
71 {
72 struct wacom *wacom = input_get_drvdata(dev);
73
74 return hid_hw_open(wacom->hdev);
75 }
76
wacom_close(struct input_dev * dev)77 static void wacom_close(struct input_dev *dev)
78 {
79 struct wacom *wacom = input_get_drvdata(dev);
80
81 hid_hw_close(wacom->hdev);
82 }
83
84 /*
85 * Calculate the resolution of the X or Y axis using hidinput_calc_abs_res.
86 */
wacom_calc_hid_res(int logical_extents,int physical_extents,unsigned unit,int exponent)87 static int wacom_calc_hid_res(int logical_extents, int physical_extents,
88 unsigned unit, int exponent)
89 {
90 struct hid_field field = {
91 .logical_maximum = logical_extents,
92 .physical_maximum = physical_extents,
93 .unit = unit,
94 .unit_exponent = exponent,
95 };
96
97 return hidinput_calc_abs_res(&field, ABS_X);
98 }
99
wacom_feature_mapping(struct hid_device * hdev,struct hid_field * field,struct hid_usage * usage)100 static void wacom_feature_mapping(struct hid_device *hdev,
101 struct hid_field *field, struct hid_usage *usage)
102 {
103 struct wacom *wacom = hid_get_drvdata(hdev);
104 struct wacom_features *features = &wacom->wacom_wac.features;
105 struct hid_data *hid_data = &wacom->wacom_wac.hid_data;
106 u8 *data;
107 int ret;
108
109 switch (usage->hid) {
110 case HID_DG_CONTACTMAX:
111 /* leave touch_max as is if predefined */
112 if (!features->touch_max) {
113 /* read manually */
114 data = kzalloc(2, GFP_KERNEL);
115 if (!data)
116 break;
117 data[0] = field->report->id;
118 ret = wacom_get_report(hdev, HID_FEATURE_REPORT,
119 data, 2, 0);
120 if (ret == 2)
121 features->touch_max = data[1];
122 kfree(data);
123 }
124 break;
125 case HID_DG_INPUTMODE:
126 /* Ignore if value index is out of bounds. */
127 if (usage->usage_index >= field->report_count) {
128 dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n");
129 break;
130 }
131
132 hid_data->inputmode = field->report->id;
133 hid_data->inputmode_index = usage->usage_index;
134 break;
135 }
136 }
137
138 /*
139 * Interface Descriptor of wacom devices can be incomplete and
140 * inconsistent so wacom_features table is used to store stylus
141 * device's packet lengths, various maximum values, and tablet
142 * resolution based on product ID's.
143 *
144 * For devices that contain 2 interfaces, wacom_features table is
145 * inaccurate for the touch interface. Since the Interface Descriptor
146 * for touch interfaces has pretty complete data, this function exists
147 * to query tablet for this missing information instead of hard coding in
148 * an additional table.
149 *
150 * A typical Interface Descriptor for a stylus will contain a
151 * boot mouse application collection that is not of interest and this
152 * function will ignore it.
153 *
154 * It also contains a digitizer application collection that also is not
155 * of interest since any information it contains would be duplicate
156 * of what is in wacom_features. Usually it defines a report of an array
157 * of bytes that could be used as max length of the stylus packet returned.
158 * If it happens to define a Digitizer-Stylus Physical Collection then
159 * the X and Y logical values contain valid data but it is ignored.
160 *
161 * A typical Interface Descriptor for a touch interface will contain a
162 * Digitizer-Finger Physical Collection which will define both logical
163 * X/Y maximum as well as the physical size of tablet. Since touch
164 * interfaces haven't supported pressure or distance, this is enough
165 * information to override invalid values in the wacom_features table.
166 *
167 * Intuos5 touch interface and 3rd gen Bamboo Touch do not contain useful
168 * data. We deal with them after returning from this function.
169 */
wacom_usage_mapping(struct hid_device * hdev,struct hid_field * field,struct hid_usage * usage)170 static void wacom_usage_mapping(struct hid_device *hdev,
171 struct hid_field *field, struct hid_usage *usage)
172 {
173 struct wacom *wacom = hid_get_drvdata(hdev);
174 struct wacom_features *features = &wacom->wacom_wac.features;
175 bool finger = (field->logical == HID_DG_FINGER) ||
176 (field->physical == HID_DG_FINGER);
177 bool pen = (field->logical == HID_DG_STYLUS) ||
178 (field->physical == HID_DG_STYLUS);
179
180 /*
181 * Requiring Stylus Usage will ignore boot mouse
182 * X/Y values and some cases of invalid Digitizer X/Y
183 * values commonly reported.
184 */
185 if (!pen && !finger)
186 return;
187
188 if (finger && !features->touch_max)
189 /* touch device at least supports one touch point */
190 features->touch_max = 1;
191
192 switch (usage->hid) {
193 case HID_GD_X:
194 features->x_max = field->logical_maximum;
195 if (finger) {
196 features->device_type = BTN_TOOL_FINGER;
197 features->x_phy = field->physical_maximum;
198 if (features->type != BAMBOO_PT) {
199 features->unit = field->unit;
200 features->unitExpo = field->unit_exponent;
201 }
202 } else {
203 features->device_type = BTN_TOOL_PEN;
204 }
205 break;
206 case HID_GD_Y:
207 features->y_max = field->logical_maximum;
208 if (finger) {
209 features->y_phy = field->physical_maximum;
210 if (features->type != BAMBOO_PT) {
211 features->unit = field->unit;
212 features->unitExpo = field->unit_exponent;
213 }
214 }
215 break;
216 case HID_DG_TIPPRESSURE:
217 if (pen)
218 features->pressure_max = field->logical_maximum;
219 break;
220 }
221
222 if (features->type == HID_GENERIC)
223 wacom_wac_usage_mapping(hdev, field, usage);
224 }
225
wacom_parse_hid(struct hid_device * hdev,struct wacom_features * features)226 static void wacom_parse_hid(struct hid_device *hdev,
227 struct wacom_features *features)
228 {
229 struct hid_report_enum *rep_enum;
230 struct hid_report *hreport;
231 int i, j;
232
233 /* check features first */
234 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT];
235 list_for_each_entry(hreport, &rep_enum->report_list, list) {
236 for (i = 0; i < hreport->maxfield; i++) {
237 /* Ignore if report count is out of bounds. */
238 if (hreport->field[i]->report_count < 1)
239 continue;
240
241 for (j = 0; j < hreport->field[i]->maxusage; j++) {
242 wacom_feature_mapping(hdev, hreport->field[i],
243 hreport->field[i]->usage + j);
244 }
245 }
246 }
247
248 /* now check the input usages */
249 rep_enum = &hdev->report_enum[HID_INPUT_REPORT];
250 list_for_each_entry(hreport, &rep_enum->report_list, list) {
251
252 if (!hreport->maxfield)
253 continue;
254
255 for (i = 0; i < hreport->maxfield; i++)
256 for (j = 0; j < hreport->field[i]->maxusage; j++)
257 wacom_usage_mapping(hdev, hreport->field[i],
258 hreport->field[i]->usage + j);
259 }
260 }
261
wacom_hid_set_device_mode(struct hid_device * hdev)262 static int wacom_hid_set_device_mode(struct hid_device *hdev)
263 {
264 struct wacom *wacom = hid_get_drvdata(hdev);
265 struct hid_data *hid_data = &wacom->wacom_wac.hid_data;
266 struct hid_report *r;
267 struct hid_report_enum *re;
268
269 if (hid_data->inputmode < 0)
270 return 0;
271
272 re = &(hdev->report_enum[HID_FEATURE_REPORT]);
273 r = re->report_id_hash[hid_data->inputmode];
274 if (r) {
275 r->field[0]->value[hid_data->inputmode_index] = 2;
276 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
277 }
278 return 0;
279 }
280
wacom_set_device_mode(struct hid_device * hdev,int report_id,int length,int mode)281 static int wacom_set_device_mode(struct hid_device *hdev, int report_id,
282 int length, int mode)
283 {
284 unsigned char *rep_data;
285 int error = -ENOMEM, limit = 0;
286
287 rep_data = kzalloc(length, GFP_KERNEL);
288 if (!rep_data)
289 return error;
290
291 do {
292 rep_data[0] = report_id;
293 rep_data[1] = mode;
294
295 error = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data,
296 length, 1);
297 if (error >= 0)
298 error = wacom_get_report(hdev, HID_FEATURE_REPORT,
299 rep_data, length, 1);
300 } while ((error < 0 || rep_data[1] != mode) && limit++ < WAC_MSG_RETRIES);
301
302 kfree(rep_data);
303
304 return error < 0 ? error : 0;
305 }
306
wacom_bt_query_tablet_data(struct hid_device * hdev,u8 speed,struct wacom_features * features)307 static int wacom_bt_query_tablet_data(struct hid_device *hdev, u8 speed,
308 struct wacom_features *features)
309 {
310 struct wacom *wacom = hid_get_drvdata(hdev);
311 int ret;
312 u8 rep_data[2];
313
314 switch (features->type) {
315 case GRAPHIRE_BT:
316 rep_data[0] = 0x03;
317 rep_data[1] = 0x00;
318 ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2,
319 3);
320
321 if (ret >= 0) {
322 rep_data[0] = speed == 0 ? 0x05 : 0x06;
323 rep_data[1] = 0x00;
324
325 ret = wacom_set_report(hdev, HID_FEATURE_REPORT,
326 rep_data, 2, 3);
327
328 if (ret >= 0) {
329 wacom->wacom_wac.bt_high_speed = speed;
330 return 0;
331 }
332 }
333
334 /*
335 * Note that if the raw queries fail, it's not a hard failure
336 * and it is safe to continue
337 */
338 hid_warn(hdev, "failed to poke device, command %d, err %d\n",
339 rep_data[0], ret);
340 break;
341 case INTUOS4WL:
342 if (speed == 1)
343 wacom->wacom_wac.bt_features &= ~0x20;
344 else
345 wacom->wacom_wac.bt_features |= 0x20;
346
347 rep_data[0] = 0x03;
348 rep_data[1] = wacom->wacom_wac.bt_features;
349
350 ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2,
351 1);
352 if (ret >= 0)
353 wacom->wacom_wac.bt_high_speed = speed;
354 break;
355 }
356
357 return 0;
358 }
359
360 /*
361 * Switch the tablet into its most-capable mode. Wacom tablets are
362 * typically configured to power-up in a mode which sends mouse-like
363 * reports to the OS. To get absolute position, pressure data, etc.
364 * from the tablet, it is necessary to switch the tablet out of this
365 * mode and into one which sends the full range of tablet data.
366 */
wacom_query_tablet_data(struct hid_device * hdev,struct wacom_features * features)367 static int wacom_query_tablet_data(struct hid_device *hdev,
368 struct wacom_features *features)
369 {
370 if (hdev->bus == BUS_BLUETOOTH)
371 return wacom_bt_query_tablet_data(hdev, 1, features);
372
373 if (features->type == HID_GENERIC)
374 return wacom_hid_set_device_mode(hdev);
375
376 if (features->device_type == BTN_TOOL_FINGER) {
377 if (features->type > TABLETPC) {
378 /* MT Tablet PC touch */
379 return wacom_set_device_mode(hdev, 3, 4, 4);
380 }
381 else if (features->type == WACOM_24HDT || features->type == CINTIQ_HYBRID) {
382 return wacom_set_device_mode(hdev, 18, 3, 2);
383 }
384 } else if (features->device_type == BTN_TOOL_PEN) {
385 if (features->type <= BAMBOO_PT && features->type != WIRELESS) {
386 return wacom_set_device_mode(hdev, 2, 2, 2);
387 }
388 }
389
390 return 0;
391 }
392
wacom_retrieve_hid_descriptor(struct hid_device * hdev,struct wacom_features * features)393 static void wacom_retrieve_hid_descriptor(struct hid_device *hdev,
394 struct wacom_features *features)
395 {
396 struct wacom *wacom = hid_get_drvdata(hdev);
397 struct usb_interface *intf = wacom->intf;
398
399 /* default features */
400 features->device_type = BTN_TOOL_PEN;
401 features->x_fuzz = 4;
402 features->y_fuzz = 4;
403 features->pressure_fuzz = 0;
404 features->distance_fuzz = 0;
405
406 /*
407 * The wireless device HID is basic and layout conflicts with
408 * other tablets (monitor and touch interface can look like pen).
409 * Skip the query for this type and modify defaults based on
410 * interface number.
411 */
412 if (features->type == WIRELESS) {
413 if (intf->cur_altsetting->desc.bInterfaceNumber == 0) {
414 features->device_type = 0;
415 } else if (intf->cur_altsetting->desc.bInterfaceNumber == 2) {
416 features->device_type = BTN_TOOL_FINGER;
417 features->pktlen = WACOM_PKGLEN_BBTOUCH3;
418 }
419 }
420
421 /* only devices that support touch need to retrieve the info */
422 if (features->type < BAMBOO_PT)
423 return;
424
425 wacom_parse_hid(hdev, features);
426 }
427
428 struct wacom_hdev_data {
429 struct list_head list;
430 struct kref kref;
431 struct hid_device *dev;
432 struct wacom_shared shared;
433 };
434
435 static LIST_HEAD(wacom_udev_list);
436 static DEFINE_MUTEX(wacom_udev_list_lock);
437
wacom_are_sibling(struct hid_device * hdev,struct hid_device * sibling)438 static bool wacom_are_sibling(struct hid_device *hdev,
439 struct hid_device *sibling)
440 {
441 struct wacom *wacom = hid_get_drvdata(hdev);
442 struct wacom_features *features = &wacom->wacom_wac.features;
443 int vid = features->oVid;
444 int pid = features->oPid;
445 int n1,n2;
446
447 if (vid == 0 && pid == 0) {
448 vid = hdev->vendor;
449 pid = hdev->product;
450 }
451
452 if (vid != sibling->vendor || pid != sibling->product)
453 return false;
454
455 /* Compare the physical path. */
456 n1 = strrchr(hdev->phys, '.') - hdev->phys;
457 n2 = strrchr(sibling->phys, '.') - sibling->phys;
458 if (n1 != n2 || n1 <= 0 || n2 <= 0)
459 return false;
460
461 return !strncmp(hdev->phys, sibling->phys, n1);
462 }
463
wacom_get_hdev_data(struct hid_device * hdev)464 static struct wacom_hdev_data *wacom_get_hdev_data(struct hid_device *hdev)
465 {
466 struct wacom_hdev_data *data;
467
468 list_for_each_entry(data, &wacom_udev_list, list) {
469 if (wacom_are_sibling(hdev, data->dev)) {
470 kref_get(&data->kref);
471 return data;
472 }
473 }
474
475 return NULL;
476 }
477
wacom_add_shared_data(struct hid_device * hdev)478 static int wacom_add_shared_data(struct hid_device *hdev)
479 {
480 struct wacom *wacom = hid_get_drvdata(hdev);
481 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
482 struct wacom_hdev_data *data;
483 int retval = 0;
484
485 mutex_lock(&wacom_udev_list_lock);
486
487 data = wacom_get_hdev_data(hdev);
488 if (!data) {
489 data = kzalloc(sizeof(struct wacom_hdev_data), GFP_KERNEL);
490 if (!data) {
491 retval = -ENOMEM;
492 goto out;
493 }
494
495 kref_init(&data->kref);
496 data->dev = hdev;
497 list_add_tail(&data->list, &wacom_udev_list);
498 }
499
500 wacom_wac->shared = &data->shared;
501
502 out:
503 mutex_unlock(&wacom_udev_list_lock);
504 return retval;
505 }
506
wacom_release_shared_data(struct kref * kref)507 static void wacom_release_shared_data(struct kref *kref)
508 {
509 struct wacom_hdev_data *data =
510 container_of(kref, struct wacom_hdev_data, kref);
511
512 mutex_lock(&wacom_udev_list_lock);
513 list_del(&data->list);
514 mutex_unlock(&wacom_udev_list_lock);
515
516 kfree(data);
517 }
518
wacom_remove_shared_data(struct wacom_wac * wacom)519 static void wacom_remove_shared_data(struct wacom_wac *wacom)
520 {
521 struct wacom_hdev_data *data;
522
523 if (wacom->shared) {
524 data = container_of(wacom->shared, struct wacom_hdev_data, shared);
525 kref_put(&data->kref, wacom_release_shared_data);
526 wacom->shared = NULL;
527 }
528 }
529
wacom_led_control(struct wacom * wacom)530 static int wacom_led_control(struct wacom *wacom)
531 {
532 unsigned char *buf;
533 int retval;
534 unsigned char report_id = WAC_CMD_LED_CONTROL;
535 int buf_size = 9;
536
537 if (wacom->wacom_wac.pid) { /* wireless connected */
538 report_id = WAC_CMD_WL_LED_CONTROL;
539 buf_size = 13;
540 }
541 buf = kzalloc(buf_size, GFP_KERNEL);
542 if (!buf)
543 return -ENOMEM;
544
545 if (wacom->wacom_wac.features.type >= INTUOS5S &&
546 wacom->wacom_wac.features.type <= INTUOSPL) {
547 /*
548 * Touch Ring and crop mark LED luminance may take on
549 * one of four values:
550 * 0 = Low; 1 = Medium; 2 = High; 3 = Off
551 */
552 int ring_led = wacom->led.select[0] & 0x03;
553 int ring_lum = (((wacom->led.llv & 0x60) >> 5) - 1) & 0x03;
554 int crop_lum = 0;
555 unsigned char led_bits = (crop_lum << 4) | (ring_lum << 2) | (ring_led);
556
557 buf[0] = report_id;
558 if (wacom->wacom_wac.pid) {
559 wacom_get_report(wacom->hdev, HID_FEATURE_REPORT,
560 buf, buf_size, WAC_CMD_RETRIES);
561 buf[0] = report_id;
562 buf[4] = led_bits;
563 } else
564 buf[1] = led_bits;
565 }
566 else {
567 int led = wacom->led.select[0] | 0x4;
568
569 if (wacom->wacom_wac.features.type == WACOM_21UX2 ||
570 wacom->wacom_wac.features.type == WACOM_24HD)
571 led |= (wacom->led.select[1] << 4) | 0x40;
572
573 buf[0] = report_id;
574 buf[1] = led;
575 buf[2] = wacom->led.llv;
576 buf[3] = wacom->led.hlv;
577 buf[4] = wacom->led.img_lum;
578 }
579
580 retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, buf_size,
581 WAC_CMD_RETRIES);
582 kfree(buf);
583
584 return retval;
585 }
586
wacom_led_putimage(struct wacom * wacom,int button_id,u8 xfer_id,const unsigned len,const void * img)587 static int wacom_led_putimage(struct wacom *wacom, int button_id, u8 xfer_id,
588 const unsigned len, const void *img)
589 {
590 unsigned char *buf;
591 int i, retval;
592 const unsigned chunk_len = len / 4; /* 4 chunks are needed to be sent */
593
594 buf = kzalloc(chunk_len + 3 , GFP_KERNEL);
595 if (!buf)
596 return -ENOMEM;
597
598 /* Send 'start' command */
599 buf[0] = WAC_CMD_ICON_START;
600 buf[1] = 1;
601 retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
602 WAC_CMD_RETRIES);
603 if (retval < 0)
604 goto out;
605
606 buf[0] = xfer_id;
607 buf[1] = button_id & 0x07;
608 for (i = 0; i < 4; i++) {
609 buf[2] = i;
610 memcpy(buf + 3, img + i * chunk_len, chunk_len);
611
612 retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT,
613 buf, chunk_len + 3, WAC_CMD_RETRIES);
614 if (retval < 0)
615 break;
616 }
617
618 /* Send 'stop' */
619 buf[0] = WAC_CMD_ICON_START;
620 buf[1] = 0;
621 wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
622 WAC_CMD_RETRIES);
623
624 out:
625 kfree(buf);
626 return retval;
627 }
628
wacom_led_select_store(struct device * dev,int set_id,const char * buf,size_t count)629 static ssize_t wacom_led_select_store(struct device *dev, int set_id,
630 const char *buf, size_t count)
631 {
632 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
633 struct wacom *wacom = hid_get_drvdata(hdev);
634 unsigned int id;
635 int err;
636
637 err = kstrtouint(buf, 10, &id);
638 if (err)
639 return err;
640
641 mutex_lock(&wacom->lock);
642
643 wacom->led.select[set_id] = id & 0x3;
644 err = wacom_led_control(wacom);
645
646 mutex_unlock(&wacom->lock);
647
648 return err < 0 ? err : count;
649 }
650
651 #define DEVICE_LED_SELECT_ATTR(SET_ID) \
652 static ssize_t wacom_led##SET_ID##_select_store(struct device *dev, \
653 struct device_attribute *attr, const char *buf, size_t count) \
654 { \
655 return wacom_led_select_store(dev, SET_ID, buf, count); \
656 } \
657 static ssize_t wacom_led##SET_ID##_select_show(struct device *dev, \
658 struct device_attribute *attr, char *buf) \
659 { \
660 struct hid_device *hdev = container_of(dev, struct hid_device, dev);\
661 struct wacom *wacom = hid_get_drvdata(hdev); \
662 return scnprintf(buf, PAGE_SIZE, "%d\n", \
663 wacom->led.select[SET_ID]); \
664 } \
665 static DEVICE_ATTR(status_led##SET_ID##_select, DEV_ATTR_RW_PERM, \
666 wacom_led##SET_ID##_select_show, \
667 wacom_led##SET_ID##_select_store)
668
669 DEVICE_LED_SELECT_ATTR(0);
670 DEVICE_LED_SELECT_ATTR(1);
671
wacom_luminance_store(struct wacom * wacom,u8 * dest,const char * buf,size_t count)672 static ssize_t wacom_luminance_store(struct wacom *wacom, u8 *dest,
673 const char *buf, size_t count)
674 {
675 unsigned int value;
676 int err;
677
678 err = kstrtouint(buf, 10, &value);
679 if (err)
680 return err;
681
682 mutex_lock(&wacom->lock);
683
684 *dest = value & 0x7f;
685 err = wacom_led_control(wacom);
686
687 mutex_unlock(&wacom->lock);
688
689 return err < 0 ? err : count;
690 }
691
692 #define DEVICE_LUMINANCE_ATTR(name, field) \
693 static ssize_t wacom_##name##_luminance_store(struct device *dev, \
694 struct device_attribute *attr, const char *buf, size_t count) \
695 { \
696 struct hid_device *hdev = container_of(dev, struct hid_device, dev);\
697 struct wacom *wacom = hid_get_drvdata(hdev); \
698 \
699 return wacom_luminance_store(wacom, &wacom->led.field, \
700 buf, count); \
701 } \
702 static ssize_t wacom_##name##_luminance_show(struct device *dev, \
703 struct device_attribute *attr, char *buf) \
704 { \
705 struct wacom *wacom = dev_get_drvdata(dev); \
706 return scnprintf(buf, PAGE_SIZE, "%d\n", wacom->led.field); \
707 } \
708 static DEVICE_ATTR(name##_luminance, DEV_ATTR_RW_PERM, \
709 wacom_##name##_luminance_show, \
710 wacom_##name##_luminance_store)
711
712 DEVICE_LUMINANCE_ATTR(status0, llv);
713 DEVICE_LUMINANCE_ATTR(status1, hlv);
714 DEVICE_LUMINANCE_ATTR(buttons, img_lum);
715
wacom_button_image_store(struct device * dev,int button_id,const char * buf,size_t count)716 static ssize_t wacom_button_image_store(struct device *dev, int button_id,
717 const char *buf, size_t count)
718 {
719 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
720 struct wacom *wacom = hid_get_drvdata(hdev);
721 int err;
722 unsigned len;
723 u8 xfer_id;
724
725 if (hdev->bus == BUS_BLUETOOTH) {
726 len = 256;
727 xfer_id = WAC_CMD_ICON_BT_XFER;
728 } else {
729 len = 1024;
730 xfer_id = WAC_CMD_ICON_XFER;
731 }
732
733 if (count != len)
734 return -EINVAL;
735
736 mutex_lock(&wacom->lock);
737
738 err = wacom_led_putimage(wacom, button_id, xfer_id, len, buf);
739
740 mutex_unlock(&wacom->lock);
741
742 return err < 0 ? err : count;
743 }
744
745 #define DEVICE_BTNIMG_ATTR(BUTTON_ID) \
746 static ssize_t wacom_btnimg##BUTTON_ID##_store(struct device *dev, \
747 struct device_attribute *attr, const char *buf, size_t count) \
748 { \
749 return wacom_button_image_store(dev, BUTTON_ID, buf, count); \
750 } \
751 static DEVICE_ATTR(button##BUTTON_ID##_rawimg, DEV_ATTR_WO_PERM, \
752 NULL, wacom_btnimg##BUTTON_ID##_store)
753
754 DEVICE_BTNIMG_ATTR(0);
755 DEVICE_BTNIMG_ATTR(1);
756 DEVICE_BTNIMG_ATTR(2);
757 DEVICE_BTNIMG_ATTR(3);
758 DEVICE_BTNIMG_ATTR(4);
759 DEVICE_BTNIMG_ATTR(5);
760 DEVICE_BTNIMG_ATTR(6);
761 DEVICE_BTNIMG_ATTR(7);
762
763 static struct attribute *cintiq_led_attrs[] = {
764 &dev_attr_status_led0_select.attr,
765 &dev_attr_status_led1_select.attr,
766 NULL
767 };
768
769 static struct attribute_group cintiq_led_attr_group = {
770 .name = "wacom_led",
771 .attrs = cintiq_led_attrs,
772 };
773
774 static struct attribute *intuos4_led_attrs[] = {
775 &dev_attr_status0_luminance.attr,
776 &dev_attr_status1_luminance.attr,
777 &dev_attr_status_led0_select.attr,
778 &dev_attr_buttons_luminance.attr,
779 &dev_attr_button0_rawimg.attr,
780 &dev_attr_button1_rawimg.attr,
781 &dev_attr_button2_rawimg.attr,
782 &dev_attr_button3_rawimg.attr,
783 &dev_attr_button4_rawimg.attr,
784 &dev_attr_button5_rawimg.attr,
785 &dev_attr_button6_rawimg.attr,
786 &dev_attr_button7_rawimg.attr,
787 NULL
788 };
789
790 static struct attribute_group intuos4_led_attr_group = {
791 .name = "wacom_led",
792 .attrs = intuos4_led_attrs,
793 };
794
795 static struct attribute *intuos5_led_attrs[] = {
796 &dev_attr_status0_luminance.attr,
797 &dev_attr_status_led0_select.attr,
798 NULL
799 };
800
801 static struct attribute_group intuos5_led_attr_group = {
802 .name = "wacom_led",
803 .attrs = intuos5_led_attrs,
804 };
805
wacom_initialize_leds(struct wacom * wacom)806 static int wacom_initialize_leds(struct wacom *wacom)
807 {
808 int error;
809
810 /* Initialize default values */
811 switch (wacom->wacom_wac.features.type) {
812 case INTUOS4S:
813 case INTUOS4:
814 case INTUOS4WL:
815 case INTUOS4L:
816 wacom->led.select[0] = 0;
817 wacom->led.select[1] = 0;
818 wacom->led.llv = 10;
819 wacom->led.hlv = 20;
820 wacom->led.img_lum = 10;
821 error = sysfs_create_group(&wacom->hdev->dev.kobj,
822 &intuos4_led_attr_group);
823 break;
824
825 case WACOM_24HD:
826 case WACOM_21UX2:
827 wacom->led.select[0] = 0;
828 wacom->led.select[1] = 0;
829 wacom->led.llv = 0;
830 wacom->led.hlv = 0;
831 wacom->led.img_lum = 0;
832
833 error = sysfs_create_group(&wacom->hdev->dev.kobj,
834 &cintiq_led_attr_group);
835 break;
836
837 case INTUOS5S:
838 case INTUOS5:
839 case INTUOS5L:
840 case INTUOSPS:
841 case INTUOSPM:
842 case INTUOSPL:
843 if (wacom->wacom_wac.features.device_type == BTN_TOOL_PEN) {
844 wacom->led.select[0] = 0;
845 wacom->led.select[1] = 0;
846 wacom->led.llv = 32;
847 wacom->led.hlv = 0;
848 wacom->led.img_lum = 0;
849
850 error = sysfs_create_group(&wacom->hdev->dev.kobj,
851 &intuos5_led_attr_group);
852 } else
853 return 0;
854 break;
855
856 default:
857 return 0;
858 }
859
860 if (error) {
861 hid_err(wacom->hdev,
862 "cannot create sysfs group err: %d\n", error);
863 return error;
864 }
865 wacom_led_control(wacom);
866 wacom->led_initialized = true;
867
868 return 0;
869 }
870
wacom_destroy_leds(struct wacom * wacom)871 static void wacom_destroy_leds(struct wacom *wacom)
872 {
873 if (!wacom->led_initialized)
874 return;
875
876 wacom->led_initialized = false;
877
878 switch (wacom->wacom_wac.features.type) {
879 case INTUOS4S:
880 case INTUOS4:
881 case INTUOS4WL:
882 case INTUOS4L:
883 sysfs_remove_group(&wacom->hdev->dev.kobj,
884 &intuos4_led_attr_group);
885 break;
886
887 case WACOM_24HD:
888 case WACOM_21UX2:
889 sysfs_remove_group(&wacom->hdev->dev.kobj,
890 &cintiq_led_attr_group);
891 break;
892
893 case INTUOS5S:
894 case INTUOS5:
895 case INTUOS5L:
896 case INTUOSPS:
897 case INTUOSPM:
898 case INTUOSPL:
899 if (wacom->wacom_wac.features.device_type == BTN_TOOL_PEN)
900 sysfs_remove_group(&wacom->hdev->dev.kobj,
901 &intuos5_led_attr_group);
902 break;
903 }
904 }
905
906 static enum power_supply_property wacom_battery_props[] = {
907 POWER_SUPPLY_PROP_STATUS,
908 POWER_SUPPLY_PROP_SCOPE,
909 POWER_SUPPLY_PROP_CAPACITY
910 };
911
912 static enum power_supply_property wacom_ac_props[] = {
913 POWER_SUPPLY_PROP_PRESENT,
914 POWER_SUPPLY_PROP_ONLINE,
915 POWER_SUPPLY_PROP_SCOPE,
916 };
917
wacom_battery_get_property(struct power_supply * psy,enum power_supply_property psp,union power_supply_propval * val)918 static int wacom_battery_get_property(struct power_supply *psy,
919 enum power_supply_property psp,
920 union power_supply_propval *val)
921 {
922 struct wacom *wacom = container_of(psy, struct wacom, battery);
923 int ret = 0;
924
925 switch (psp) {
926 case POWER_SUPPLY_PROP_SCOPE:
927 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
928 break;
929 case POWER_SUPPLY_PROP_CAPACITY:
930 val->intval =
931 wacom->wacom_wac.battery_capacity;
932 break;
933 case POWER_SUPPLY_PROP_STATUS:
934 if (wacom->wacom_wac.bat_charging)
935 val->intval = POWER_SUPPLY_STATUS_CHARGING;
936 else if (wacom->wacom_wac.battery_capacity == 100 &&
937 wacom->wacom_wac.ps_connected)
938 val->intval = POWER_SUPPLY_STATUS_FULL;
939 else
940 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
941 break;
942 default:
943 ret = -EINVAL;
944 break;
945 }
946
947 return ret;
948 }
949
wacom_ac_get_property(struct power_supply * psy,enum power_supply_property psp,union power_supply_propval * val)950 static int wacom_ac_get_property(struct power_supply *psy,
951 enum power_supply_property psp,
952 union power_supply_propval *val)
953 {
954 struct wacom *wacom = container_of(psy, struct wacom, ac);
955 int ret = 0;
956
957 switch (psp) {
958 case POWER_SUPPLY_PROP_PRESENT:
959 /* fall through */
960 case POWER_SUPPLY_PROP_ONLINE:
961 val->intval = wacom->wacom_wac.ps_connected;
962 break;
963 case POWER_SUPPLY_PROP_SCOPE:
964 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
965 break;
966 default:
967 ret = -EINVAL;
968 break;
969 }
970 return ret;
971 }
972
wacom_initialize_battery(struct wacom * wacom)973 static int wacom_initialize_battery(struct wacom *wacom)
974 {
975 static atomic_t battery_no = ATOMIC_INIT(0);
976 int error;
977 unsigned long n;
978
979 if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) {
980 n = atomic_inc_return(&battery_no) - 1;
981
982 wacom->battery.properties = wacom_battery_props;
983 wacom->battery.num_properties = ARRAY_SIZE(wacom_battery_props);
984 wacom->battery.get_property = wacom_battery_get_property;
985 sprintf(wacom->wacom_wac.bat_name, "wacom_battery_%ld", n);
986 wacom->battery.name = wacom->wacom_wac.bat_name;
987 wacom->battery.type = POWER_SUPPLY_TYPE_BATTERY;
988 wacom->battery.use_for_apm = 0;
989
990 wacom->ac.properties = wacom_ac_props;
991 wacom->ac.num_properties = ARRAY_SIZE(wacom_ac_props);
992 wacom->ac.get_property = wacom_ac_get_property;
993 sprintf(wacom->wacom_wac.ac_name, "wacom_ac_%ld", n);
994 wacom->ac.name = wacom->wacom_wac.ac_name;
995 wacom->ac.type = POWER_SUPPLY_TYPE_MAINS;
996 wacom->ac.use_for_apm = 0;
997
998 error = power_supply_register(&wacom->hdev->dev,
999 &wacom->battery);
1000 if (error)
1001 return error;
1002
1003 power_supply_powers(&wacom->battery, &wacom->hdev->dev);
1004
1005 error = power_supply_register(&wacom->hdev->dev, &wacom->ac);
1006 if (error) {
1007 power_supply_unregister(&wacom->battery);
1008 return error;
1009 }
1010
1011 power_supply_powers(&wacom->ac, &wacom->hdev->dev);
1012 }
1013
1014 return 0;
1015 }
1016
wacom_destroy_battery(struct wacom * wacom)1017 static void wacom_destroy_battery(struct wacom *wacom)
1018 {
1019 if ((wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&
1020 wacom->battery.dev) {
1021 power_supply_unregister(&wacom->battery);
1022 wacom->battery.dev = NULL;
1023 power_supply_unregister(&wacom->ac);
1024 wacom->ac.dev = NULL;
1025 }
1026 }
1027
wacom_show_speed(struct device * dev,struct device_attribute * attr,char * buf)1028 static ssize_t wacom_show_speed(struct device *dev,
1029 struct device_attribute
1030 *attr, char *buf)
1031 {
1032 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1033 struct wacom *wacom = hid_get_drvdata(hdev);
1034
1035 return snprintf(buf, PAGE_SIZE, "%i\n", wacom->wacom_wac.bt_high_speed);
1036 }
1037
wacom_store_speed(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1038 static ssize_t wacom_store_speed(struct device *dev,
1039 struct device_attribute *attr,
1040 const char *buf, size_t count)
1041 {
1042 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1043 struct wacom *wacom = hid_get_drvdata(hdev);
1044 u8 new_speed;
1045
1046 if (kstrtou8(buf, 0, &new_speed))
1047 return -EINVAL;
1048
1049 if (new_speed != 0 && new_speed != 1)
1050 return -EINVAL;
1051
1052 wacom_bt_query_tablet_data(hdev, new_speed, &wacom->wacom_wac.features);
1053
1054 return count;
1055 }
1056
1057 static DEVICE_ATTR(speed, DEV_ATTR_RW_PERM,
1058 wacom_show_speed, wacom_store_speed);
1059
wacom_allocate_input(struct wacom * wacom)1060 static struct input_dev *wacom_allocate_input(struct wacom *wacom)
1061 {
1062 struct input_dev *input_dev;
1063 struct hid_device *hdev = wacom->hdev;
1064 struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1065
1066 input_dev = input_allocate_device();
1067 if (!input_dev)
1068 return NULL;
1069
1070 input_dev->name = wacom_wac->name;
1071 input_dev->phys = hdev->phys;
1072 input_dev->dev.parent = &hdev->dev;
1073 input_dev->open = wacom_open;
1074 input_dev->close = wacom_close;
1075 input_dev->uniq = hdev->uniq;
1076 input_dev->id.bustype = hdev->bus;
1077 input_dev->id.vendor = hdev->vendor;
1078 input_dev->id.product = wacom_wac->pid ? wacom_wac->pid : hdev->product;
1079 input_dev->id.version = hdev->version;
1080 input_set_drvdata(input_dev, wacom);
1081
1082 return input_dev;
1083 }
1084
wacom_free_inputs(struct wacom * wacom)1085 static void wacom_free_inputs(struct wacom *wacom)
1086 {
1087 struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1088
1089 if (wacom_wac->input)
1090 input_free_device(wacom_wac->input);
1091 if (wacom_wac->pad_input)
1092 input_free_device(wacom_wac->pad_input);
1093 wacom_wac->input = NULL;
1094 wacom_wac->pad_input = NULL;
1095 }
1096
wacom_allocate_inputs(struct wacom * wacom)1097 static int wacom_allocate_inputs(struct wacom *wacom)
1098 {
1099 struct input_dev *input_dev, *pad_input_dev;
1100 struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1101
1102 input_dev = wacom_allocate_input(wacom);
1103 pad_input_dev = wacom_allocate_input(wacom);
1104 if (!input_dev || !pad_input_dev) {
1105 wacom_free_inputs(wacom);
1106 return -ENOMEM;
1107 }
1108
1109 wacom_wac->input = input_dev;
1110 wacom_wac->pad_input = pad_input_dev;
1111 wacom_wac->pad_input->name = wacom_wac->pad_name;
1112
1113 return 0;
1114 }
1115
wacom_clean_inputs(struct wacom * wacom)1116 static void wacom_clean_inputs(struct wacom *wacom)
1117 {
1118 if (wacom->wacom_wac.input) {
1119 if (wacom->wacom_wac.input_registered)
1120 input_unregister_device(wacom->wacom_wac.input);
1121 else
1122 input_free_device(wacom->wacom_wac.input);
1123 }
1124 if (wacom->wacom_wac.pad_input) {
1125 if (wacom->wacom_wac.input_registered)
1126 input_unregister_device(wacom->wacom_wac.pad_input);
1127 else
1128 input_free_device(wacom->wacom_wac.pad_input);
1129 }
1130 wacom->wacom_wac.input = NULL;
1131 wacom->wacom_wac.pad_input = NULL;
1132 wacom_destroy_leds(wacom);
1133 }
1134
wacom_register_inputs(struct wacom * wacom)1135 static int wacom_register_inputs(struct wacom *wacom)
1136 {
1137 struct input_dev *input_dev, *pad_input_dev;
1138 struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1139 int error;
1140
1141 input_dev = wacom_wac->input;
1142 pad_input_dev = wacom_wac->pad_input;
1143
1144 if (!input_dev || !pad_input_dev)
1145 return -EINVAL;
1146
1147 error = wacom_setup_input_capabilities(input_dev, wacom_wac);
1148 if (error)
1149 return error;
1150
1151 error = input_register_device(input_dev);
1152 if (error)
1153 return error;
1154
1155 error = wacom_setup_pad_input_capabilities(pad_input_dev, wacom_wac);
1156 if (error) {
1157 /* no pad in use on this interface */
1158 input_free_device(pad_input_dev);
1159 wacom_wac->pad_input = NULL;
1160 pad_input_dev = NULL;
1161 } else {
1162 error = input_register_device(pad_input_dev);
1163 if (error)
1164 goto fail_register_pad_input;
1165
1166 error = wacom_initialize_leds(wacom);
1167 if (error)
1168 goto fail_leds;
1169 }
1170
1171 wacom_wac->input_registered = true;
1172
1173 return 0;
1174
1175 fail_leds:
1176 input_unregister_device(pad_input_dev);
1177 pad_input_dev = NULL;
1178 fail_register_pad_input:
1179 input_unregister_device(input_dev);
1180 wacom_wac->input = NULL;
1181 return error;
1182 }
1183
wacom_wireless_work(struct work_struct * work)1184 static void wacom_wireless_work(struct work_struct *work)
1185 {
1186 struct wacom *wacom = container_of(work, struct wacom, work);
1187 struct usb_device *usbdev = wacom->usbdev;
1188 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1189 struct hid_device *hdev1, *hdev2;
1190 struct wacom *wacom1, *wacom2;
1191 struct wacom_wac *wacom_wac1, *wacom_wac2;
1192 int error;
1193
1194 /*
1195 * Regardless if this is a disconnect or a new tablet,
1196 * remove any existing input and battery devices.
1197 */
1198
1199 wacom_destroy_battery(wacom);
1200
1201 /* Stylus interface */
1202 hdev1 = usb_get_intfdata(usbdev->config->interface[1]);
1203 wacom1 = hid_get_drvdata(hdev1);
1204 wacom_wac1 = &(wacom1->wacom_wac);
1205 wacom_clean_inputs(wacom1);
1206
1207 /* Touch interface */
1208 hdev2 = usb_get_intfdata(usbdev->config->interface[2]);
1209 wacom2 = hid_get_drvdata(hdev2);
1210 wacom_wac2 = &(wacom2->wacom_wac);
1211 wacom_clean_inputs(wacom2);
1212
1213 if (wacom_wac->pid == 0) {
1214 hid_info(wacom->hdev, "wireless tablet disconnected\n");
1215 wacom_wac1->shared->type = 0;
1216 } else {
1217 const struct hid_device_id *id = wacom_ids;
1218
1219 hid_info(wacom->hdev, "wireless tablet connected with PID %x\n",
1220 wacom_wac->pid);
1221
1222 while (id->bus) {
1223 if (id->vendor == USB_VENDOR_ID_WACOM &&
1224 id->product == wacom_wac->pid)
1225 break;
1226 id++;
1227 }
1228
1229 if (!id->bus) {
1230 hid_info(wacom->hdev, "ignoring unknown PID.\n");
1231 return;
1232 }
1233
1234 /* Stylus interface */
1235 wacom_wac1->features =
1236 *((struct wacom_features *)id->driver_data);
1237 wacom_wac1->features.device_type = BTN_TOOL_PEN;
1238 snprintf(wacom_wac1->name, WACOM_NAME_MAX, "%s (WL) Pen",
1239 wacom_wac1->features.name);
1240 snprintf(wacom_wac1->pad_name, WACOM_NAME_MAX, "%s (WL) Pad",
1241 wacom_wac1->features.name);
1242 wacom_wac1->shared->touch_max = wacom_wac1->features.touch_max;
1243 wacom_wac1->shared->type = wacom_wac1->features.type;
1244 wacom_wac1->pid = wacom_wac->pid;
1245 error = wacom_allocate_inputs(wacom1) ||
1246 wacom_register_inputs(wacom1);
1247 if (error)
1248 goto fail;
1249
1250 /* Touch interface */
1251 if (wacom_wac1->features.touch_max ||
1252 wacom_wac1->features.type == INTUOSHT) {
1253 wacom_wac2->features =
1254 *((struct wacom_features *)id->driver_data);
1255 wacom_wac2->features.pktlen = WACOM_PKGLEN_BBTOUCH3;
1256 wacom_wac2->features.device_type = BTN_TOOL_FINGER;
1257 wacom_wac2->features.x_max = wacom_wac2->features.y_max = 4096;
1258 if (wacom_wac2->features.touch_max)
1259 snprintf(wacom_wac2->name, WACOM_NAME_MAX,
1260 "%s (WL) Finger",wacom_wac2->features.name);
1261 else
1262 snprintf(wacom_wac2->name, WACOM_NAME_MAX,
1263 "%s (WL) Pad",wacom_wac2->features.name);
1264 snprintf(wacom_wac2->pad_name, WACOM_NAME_MAX,
1265 "%s (WL) Pad", wacom_wac2->features.name);
1266 wacom_wac2->pid = wacom_wac->pid;
1267 error = wacom_allocate_inputs(wacom2) ||
1268 wacom_register_inputs(wacom2);
1269 if (error)
1270 goto fail;
1271
1272 if (wacom_wac1->features.type == INTUOSHT &&
1273 wacom_wac1->features.touch_max)
1274 wacom_wac->shared->touch_input = wacom_wac2->input;
1275 }
1276
1277 error = wacom_initialize_battery(wacom);
1278 if (error)
1279 goto fail;
1280 }
1281
1282 return;
1283
1284 fail:
1285 wacom_clean_inputs(wacom1);
1286 wacom_clean_inputs(wacom2);
1287 return;
1288 }
1289
1290 /*
1291 * Not all devices report physical dimensions from HID.
1292 * Compute the default from hardcoded logical dimension
1293 * and resolution before driver overwrites them.
1294 */
wacom_set_default_phy(struct wacom_features * features)1295 static void wacom_set_default_phy(struct wacom_features *features)
1296 {
1297 if (features->x_resolution) {
1298 features->x_phy = (features->x_max * 100) /
1299 features->x_resolution;
1300 features->y_phy = (features->y_max * 100) /
1301 features->y_resolution;
1302 }
1303 }
1304
wacom_calculate_res(struct wacom_features * features)1305 static void wacom_calculate_res(struct wacom_features *features)
1306 {
1307 features->x_resolution = wacom_calc_hid_res(features->x_max,
1308 features->x_phy,
1309 features->unit,
1310 features->unitExpo);
1311 features->y_resolution = wacom_calc_hid_res(features->y_max,
1312 features->y_phy,
1313 features->unit,
1314 features->unitExpo);
1315 }
1316
wacom_hid_report_len(struct hid_report * report)1317 static int wacom_hid_report_len(struct hid_report *report)
1318 {
1319 /* equivalent to DIV_ROUND_UP(report->size, 8) + !!(report->id > 0) */
1320 return ((report->size - 1) >> 3) + 1 + (report->id > 0);
1321 }
1322
wacom_compute_pktlen(struct hid_device * hdev)1323 static size_t wacom_compute_pktlen(struct hid_device *hdev)
1324 {
1325 struct hid_report_enum *report_enum;
1326 struct hid_report *report;
1327 size_t size = 0;
1328
1329 report_enum = hdev->report_enum + HID_INPUT_REPORT;
1330
1331 list_for_each_entry(report, &report_enum->report_list, list) {
1332 size_t report_size = wacom_hid_report_len(report);
1333 if (report_size > size)
1334 size = report_size;
1335 }
1336
1337 return size;
1338 }
1339
wacom_probe(struct hid_device * hdev,const struct hid_device_id * id)1340 static int wacom_probe(struct hid_device *hdev,
1341 const struct hid_device_id *id)
1342 {
1343 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
1344 struct usb_device *dev = interface_to_usbdev(intf);
1345 struct wacom *wacom;
1346 struct wacom_wac *wacom_wac;
1347 struct wacom_features *features;
1348 int error;
1349 unsigned int connect_mask = HID_CONNECT_HIDRAW;
1350
1351 if (!id->driver_data)
1352 return -EINVAL;
1353
1354 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1355
1356 wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
1357 if (!wacom)
1358 return -ENOMEM;
1359
1360 hid_set_drvdata(hdev, wacom);
1361 wacom->hdev = hdev;
1362
1363 /* ask for the report descriptor to be loaded by HID */
1364 error = hid_parse(hdev);
1365 if (error) {
1366 hid_err(hdev, "parse failed\n");
1367 goto fail_parse;
1368 }
1369
1370 wacom_wac = &wacom->wacom_wac;
1371 wacom_wac->features = *((struct wacom_features *)id->driver_data);
1372 features = &wacom_wac->features;
1373 features->pktlen = wacom_compute_pktlen(hdev);
1374 if (features->pktlen > WACOM_PKGLEN_MAX) {
1375 error = -EINVAL;
1376 goto fail_pktlen;
1377 }
1378
1379 if (features->check_for_hid_type && features->hid_type != hdev->type) {
1380 error = -ENODEV;
1381 goto fail_type;
1382 }
1383
1384 wacom->usbdev = dev;
1385 wacom->intf = intf;
1386 mutex_init(&wacom->lock);
1387 INIT_WORK(&wacom->work, wacom_wireless_work);
1388
1389 if (!(features->quirks & WACOM_QUIRK_NO_INPUT)) {
1390 error = wacom_allocate_inputs(wacom);
1391 if (error)
1392 goto fail_allocate_inputs;
1393 }
1394
1395 /* set the default size in case we do not get them from hid */
1396 wacom_set_default_phy(features);
1397
1398 /* Retrieve the physical and logical size for touch devices */
1399 wacom_retrieve_hid_descriptor(hdev, features);
1400
1401 /*
1402 * Intuos5 has no useful data about its touch interface in its
1403 * HID descriptor. If this is the touch interface (PacketSize
1404 * of WACOM_PKGLEN_BBTOUCH3), override the table values.
1405 */
1406 if (features->type >= INTUOS5S && features->type <= INTUOSHT) {
1407 if (features->pktlen == WACOM_PKGLEN_BBTOUCH3) {
1408 features->device_type = BTN_TOOL_FINGER;
1409
1410 features->x_max = 4096;
1411 features->y_max = 4096;
1412 } else {
1413 features->device_type = BTN_TOOL_PEN;
1414 }
1415 }
1416
1417 /*
1418 * Same thing for Bamboo 3rd gen.
1419 */
1420 if ((features->type == BAMBOO_PT) &&
1421 (features->pktlen == WACOM_PKGLEN_BBTOUCH3) &&
1422 (features->device_type == BTN_TOOL_PEN)) {
1423 features->device_type = BTN_TOOL_FINGER;
1424
1425 features->x_max = 4096;
1426 features->y_max = 4096;
1427 }
1428
1429 if (hdev->bus == BUS_BLUETOOTH)
1430 features->quirks |= WACOM_QUIRK_BATTERY;
1431
1432 wacom_setup_device_quirks(features);
1433
1434 /* set unit to "100th of a mm" for devices not reported by HID */
1435 if (!features->unit) {
1436 features->unit = 0x11;
1437 features->unitExpo = -3;
1438 }
1439 wacom_calculate_res(features);
1440
1441 strlcpy(wacom_wac->name, features->name, sizeof(wacom_wac->name));
1442 snprintf(wacom_wac->pad_name, sizeof(wacom_wac->pad_name),
1443 "%s Pad", features->name);
1444
1445 if (features->quirks & WACOM_QUIRK_MULTI_INPUT) {
1446 /* Append the device type to the name */
1447 if (features->device_type != BTN_TOOL_FINGER)
1448 strlcat(wacom_wac->name, " Pen", WACOM_NAME_MAX);
1449 else if (features->touch_max)
1450 strlcat(wacom_wac->name, " Finger", WACOM_NAME_MAX);
1451 else
1452 strlcat(wacom_wac->name, " Pad", WACOM_NAME_MAX);
1453
1454 error = wacom_add_shared_data(hdev);
1455 if (error)
1456 goto fail_shared_data;
1457 }
1458
1459 if (!(features->quirks & WACOM_QUIRK_MONITOR) &&
1460 (features->quirks & WACOM_QUIRK_BATTERY)) {
1461 error = wacom_initialize_battery(wacom);
1462 if (error)
1463 goto fail_battery;
1464 }
1465
1466 if (!(features->quirks & WACOM_QUIRK_NO_INPUT)) {
1467 error = wacom_register_inputs(wacom);
1468 if (error)
1469 goto fail_register_inputs;
1470 }
1471
1472 if (hdev->bus == BUS_BLUETOOTH) {
1473 error = device_create_file(&hdev->dev, &dev_attr_speed);
1474 if (error)
1475 hid_warn(hdev,
1476 "can't create sysfs speed attribute err: %d\n",
1477 error);
1478 }
1479
1480 if (features->type == HID_GENERIC)
1481 connect_mask |= HID_CONNECT_DRIVER;
1482
1483 /* Regular HID work starts now */
1484 error = hid_hw_start(hdev, connect_mask);
1485 if (error) {
1486 hid_err(hdev, "hw start failed\n");
1487 goto fail_hw_start;
1488 }
1489
1490 /* Note that if query fails it is not a hard failure */
1491 wacom_query_tablet_data(hdev, features);
1492
1493 if (features->quirks & WACOM_QUIRK_MONITOR)
1494 error = hid_hw_open(hdev);
1495
1496 if (wacom_wac->features.type == INTUOSHT && wacom_wac->features.touch_max) {
1497 if (wacom_wac->features.device_type == BTN_TOOL_FINGER)
1498 wacom_wac->shared->touch_input = wacom_wac->input;
1499 }
1500
1501 return 0;
1502
1503 fail_hw_start:
1504 if (hdev->bus == BUS_BLUETOOTH)
1505 device_remove_file(&hdev->dev, &dev_attr_speed);
1506 fail_register_inputs:
1507 wacom_clean_inputs(wacom);
1508 wacom_destroy_battery(wacom);
1509 fail_battery:
1510 wacom_remove_shared_data(wacom_wac);
1511 fail_shared_data:
1512 wacom_clean_inputs(wacom);
1513 fail_allocate_inputs:
1514 fail_type:
1515 fail_pktlen:
1516 fail_parse:
1517 kfree(wacom);
1518 hid_set_drvdata(hdev, NULL);
1519 return error;
1520 }
1521
wacom_remove(struct hid_device * hdev)1522 static void wacom_remove(struct hid_device *hdev)
1523 {
1524 struct wacom *wacom = hid_get_drvdata(hdev);
1525
1526 hid_hw_stop(hdev);
1527
1528 cancel_work_sync(&wacom->work);
1529 wacom_clean_inputs(wacom);
1530 if (hdev->bus == BUS_BLUETOOTH)
1531 device_remove_file(&hdev->dev, &dev_attr_speed);
1532 wacom_destroy_battery(wacom);
1533 wacom_remove_shared_data(&wacom->wacom_wac);
1534
1535 hid_set_drvdata(hdev, NULL);
1536 kfree(wacom);
1537 }
1538
1539 #ifdef CONFIG_PM
wacom_resume(struct hid_device * hdev)1540 static int wacom_resume(struct hid_device *hdev)
1541 {
1542 struct wacom *wacom = hid_get_drvdata(hdev);
1543 struct wacom_features *features = &wacom->wacom_wac.features;
1544
1545 mutex_lock(&wacom->lock);
1546
1547 /* switch to wacom mode first */
1548 wacom_query_tablet_data(hdev, features);
1549 wacom_led_control(wacom);
1550
1551 mutex_unlock(&wacom->lock);
1552
1553 return 0;
1554 }
1555
wacom_reset_resume(struct hid_device * hdev)1556 static int wacom_reset_resume(struct hid_device *hdev)
1557 {
1558 return wacom_resume(hdev);
1559 }
1560 #endif /* CONFIG_PM */
1561
1562 static struct hid_driver wacom_driver = {
1563 .name = "wacom",
1564 .id_table = wacom_ids,
1565 .probe = wacom_probe,
1566 .remove = wacom_remove,
1567 .event = wacom_wac_event,
1568 .report = wacom_wac_report,
1569 #ifdef CONFIG_PM
1570 .resume = wacom_resume,
1571 .reset_resume = wacom_reset_resume,
1572 #endif
1573 .raw_event = wacom_raw_event,
1574 };
1575 module_hid_driver(wacom_driver);
1576
1577 MODULE_VERSION(DRIVER_VERSION);
1578 MODULE_AUTHOR(DRIVER_AUTHOR);
1579 MODULE_DESCRIPTION(DRIVER_DESC);
1580 MODULE_LICENSE(DRIVER_LICENSE);
1581