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hid-wacom.c
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1 /*
2  * Bluetooth Wacom Tablet support
3  *
4  * Copyright (c) 1999 Andreas Gal
5  * Copyright (c) 2000-2005 Vojtech Pavlik <[email protected]>
6  * Copyright (c) 2005 Michael Haboustak <[email protected]> for Concept2, Inc
7  * Copyright (c) 2006-2007 Jiri Kosina
8  * Copyright (c) 2008 Jiri Slaby <[email protected]>
9  * Copyright (c) 2006 Andrew Zabolotny <[email protected]>
10  * Copyright (c) 2009 Bastien Nocera <[email protected]>
11  * Copyright (c) 2011 Przemysław Firszt <[email protected]>
12  */
13 
14 /*
15  * This program is free software; you can redistribute it and/or modify it
16  * under the terms of the GNU General Public License as published by the Free
17  * Software Foundation; either version 2 of the License, or (at your option)
18  * any later version.
19  */
20 
21 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
22 
23 #include <linux/device.h>
24 #include <linux/hid.h>
25 #include <linux/module.h>
26 #include <linux/leds.h>
27 #include <linux/slab.h>
28 #include <linux/power_supply.h>
29 
30 #include "hid-ids.h"
31 
32 #define PAD_DEVICE_ID 0x0F
33 
34 #define WAC_CMD_LED_CONTROL 0x20
35 #define WAC_CMD_ICON_START_STOP 0x21
36 #define WAC_CMD_ICON_TRANSFER 0x26
37 
38 struct wacom_data {
39  __u16 tool;
40  __u16 butstate;
41  __u8 whlstate;
42  __u8 features;
43  __u32 id;
44  __u32 serial;
45  unsigned char high_speed;
46  __u8 battery_capacity;
47  __u8 power_raw;
48  __u8 ps_connected;
49  struct power_supply battery;
50  struct power_supply ac;
51  __u8 led_selector;
52  struct led_classdev *leds[4];
53 };
54 
55 /*percent of battery capacity for Graphire
56  8th value means AC online and show 100% capacity */
57 static unsigned short batcap_gr[8] = { 1, 15, 25, 35, 50, 70, 100, 100 };
58 /*percent of battery capacity for Intuos4 WL, AC has a separate bit*/
59 static unsigned short batcap_i4[8] = { 1, 15, 30, 45, 60, 70, 85, 100 };
60 
61 static enum power_supply_property wacom_battery_props[] = {
62  POWER_SUPPLY_PROP_PRESENT,
63  POWER_SUPPLY_PROP_CAPACITY,
64  POWER_SUPPLY_PROP_SCOPE,
65 };
66 
67 static enum power_supply_property wacom_ac_props[] = {
68  POWER_SUPPLY_PROP_PRESENT,
69  POWER_SUPPLY_PROP_ONLINE,
70  POWER_SUPPLY_PROP_SCOPE,
71 };
72 
73 static void wacom_scramble(__u8 *image)
74 {
75  __u16 mask;
76  __u16 s1;
77  __u16 s2;
78  __u16 r1 ;
79  __u16 r2 ;
80  __u16 r;
81  __u8 buf[256];
82  int i, w, x, y, z;
83 
84  for (x = 0; x < 32; x++) {
85  for (y = 0; y < 8; y++)
86  buf[(8 * x) + (7 - y)] = image[(8 * x) + y];
87  }
88 
89  /* Change 76543210 into GECA6420 as required by Intuos4 WL
90  * HGFEDCBA HFDB7531
91  */
92  for (x = 0; x < 4; x++) {
93  for (y = 0; y < 4; y++) {
94  for (z = 0; z < 8; z++) {
95  mask = 0x0001;
96  r1 = 0;
97  r2 = 0;
98  i = (x << 6) + (y << 4) + z;
99  s1 = buf[i];
100  s2 = buf[i+8];
101  for (w = 0; w < 8; w++) {
102  r1 |= (s1 & mask);
103  r2 |= (s2 & mask);
104  s1 <<= 1;
105  s2 <<= 1;
106  mask <<= 2;
107  }
108  r = r1 | (r2 << 1);
109  i = (x << 6) + (y << 4) + (z << 1);
110  image[i] = 0xFF & r;
111  image[i+1] = (0xFF00 & r) >> 8;
112  }
113  }
114  }
115 }
116 
117 static void wacom_set_image(struct hid_device *hdev, const char *image,
118  __u8 icon_no)
119 {
120  __u8 rep_data[68];
121  __u8 p[256];
122  int ret, i, j;
123 
124  for (i = 0; i < 256; i++)
125  p[i] = image[i];
126 
127  rep_data[0] = WAC_CMD_ICON_START_STOP;
128  rep_data[1] = 0;
129  ret = hdev->hid_output_raw_report(hdev, rep_data, 2,
130  HID_FEATURE_REPORT);
131  if (ret < 0)
132  goto err;
133 
134  rep_data[0] = WAC_CMD_ICON_TRANSFER;
135  rep_data[1] = icon_no & 0x07;
136 
137  wacom_scramble(p);
138 
139  for (i = 0; i < 4; i++) {
140  for (j = 0; j < 64; j++)
141  rep_data[j + 3] = p[(i << 6) + j];
142 
143  rep_data[2] = i;
144  ret = hdev->hid_output_raw_report(hdev, rep_data, 67,
145  HID_FEATURE_REPORT);
146  }
147 
148  rep_data[0] = WAC_CMD_ICON_START_STOP;
149  rep_data[1] = 0;
150 
151  ret = hdev->hid_output_raw_report(hdev, rep_data, 2,
152  HID_FEATURE_REPORT);
153 
154 err:
155  return;
156 }
157 
158 static void wacom_leds_set_brightness(struct led_classdev *led_dev,
159  enum led_brightness value)
160 {
161  struct device *dev = led_dev->dev->parent;
162  struct hid_device *hdev;
163  struct wacom_data *wdata;
164  unsigned char *buf;
165  __u8 led = 0;
166  int i;
167 
168  hdev = container_of(dev, struct hid_device, dev);
169  wdata = hid_get_drvdata(hdev);
170  for (i = 0; i < 4; ++i) {
171  if (wdata->leds[i] == led_dev)
172  wdata->led_selector = i;
173  }
174 
175  led = wdata->led_selector | 0x04;
176  buf = kzalloc(9, GFP_KERNEL);
177  if (buf) {
178  buf[0] = WAC_CMD_LED_CONTROL;
179  buf[1] = led;
180  buf[2] = value >> 2;
181  buf[3] = value;
182  /* use fixed brightness for OLEDs */
183  buf[4] = 0x08;
184  hdev->hid_output_raw_report(hdev, buf, 9, HID_FEATURE_REPORT);
185  kfree(buf);
186  }
187 
188  return;
189 }
190 
191 static enum led_brightness wacom_leds_get_brightness(struct led_classdev *led_dev)
192 {
193  struct wacom_data *wdata;
194  struct device *dev = led_dev->dev->parent;
195  int value = 0;
196  int i;
197 
198  wdata = hid_get_drvdata(container_of(dev, struct hid_device, dev));
199 
200  for (i = 0; i < 4; ++i) {
201  if (wdata->leds[i] == led_dev) {
202  value = wdata->leds[i]->brightness;
203  break;
204  }
205  }
206 
207  return value;
208 }
209 
210 
211 static int wacom_initialize_leds(struct hid_device *hdev)
212 {
213  struct wacom_data *wdata = hid_get_drvdata(hdev);
214  struct led_classdev *led;
215  struct device *dev = &hdev->dev;
216  size_t namesz = strlen(dev_name(dev)) + 12;
217  char *name;
218  int i, ret;
219 
220  wdata->led_selector = 0;
221 
222  for (i = 0; i < 4; i++) {
223  led = kzalloc(sizeof(struct led_classdev) + namesz, GFP_KERNEL);
224  if (!led) {
225  hid_warn(hdev,
226  "can't allocate memory for LED selector\n");
227  ret = -ENOMEM;
228  goto err;
229  }
230 
231  name = (void *)&led[1];
232  snprintf(name, namesz, "%s:selector:%d", dev_name(dev), i);
233  led->name = name;
234  led->brightness = 0;
235  led->max_brightness = 127;
236  led->brightness_get = wacom_leds_get_brightness;
237  led->brightness_set = wacom_leds_set_brightness;
238 
239  wdata->leds[i] = led;
240 
241  ret = led_classdev_register(dev, wdata->leds[i]);
242 
243  if (ret) {
244  wdata->leds[i] = NULL;
245  kfree(led);
246  hid_warn(hdev, "can't register LED\n");
247  goto err;
248  }
249  }
250 
251 err:
252  return ret;
253 }
254 
255 static void wacom_destroy_leds(struct hid_device *hdev)
256 {
257  struct wacom_data *wdata = hid_get_drvdata(hdev);
258  struct led_classdev *led;
259  int i;
260 
261  for (i = 0; i < 4; ++i) {
262  if (wdata->leds[i]) {
263  led = wdata->leds[i];
264  wdata->leds[i] = NULL;
265  led_classdev_unregister(led);
266  kfree(led);
267  }
268  }
269 
270 }
271 
272 static int wacom_battery_get_property(struct power_supply *psy,
273  enum power_supply_property psp,
274  union power_supply_propval *val)
275 {
276  struct wacom_data *wdata = container_of(psy,
277  struct wacom_data, battery);
278  int ret = 0;
279 
280  switch (psp) {
281  case POWER_SUPPLY_PROP_PRESENT:
282  val->intval = 1;
283  break;
284  case POWER_SUPPLY_PROP_SCOPE:
285  val->intval = POWER_SUPPLY_SCOPE_DEVICE;
286  break;
287  case POWER_SUPPLY_PROP_CAPACITY:
288  val->intval = wdata->battery_capacity;
289  break;
290  default:
291  ret = -EINVAL;
292  break;
293  }
294  return ret;
295 }
296 
297 static int wacom_ac_get_property(struct power_supply *psy,
298  enum power_supply_property psp,
299  union power_supply_propval *val)
300 {
301  struct wacom_data *wdata = container_of(psy, struct wacom_data, ac);
302  int ret = 0;
303 
304  switch (psp) {
305  case POWER_SUPPLY_PROP_PRESENT:
306  /* fall through */
307  case POWER_SUPPLY_PROP_ONLINE:
308  val->intval = wdata->ps_connected;
309  break;
310  case POWER_SUPPLY_PROP_SCOPE:
311  val->intval = POWER_SUPPLY_SCOPE_DEVICE;
312  break;
313  default:
314  ret = -EINVAL;
315  break;
316  }
317  return ret;
318 }
319 
320 static void wacom_set_features(struct hid_device *hdev, u8 speed)
321 {
322  struct wacom_data *wdata = hid_get_drvdata(hdev);
323  int limit, ret;
324  __u8 rep_data[2];
325 
326  switch (hdev->product) {
327  case USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH:
328  rep_data[0] = 0x03 ; rep_data[1] = 0x00;
329  limit = 3;
330  do {
331  ret = hdev->hid_output_raw_report(hdev, rep_data, 2,
332  HID_FEATURE_REPORT);
333  } while (ret < 0 && limit-- > 0);
334 
335  if (ret >= 0) {
336  if (speed == 0)
337  rep_data[0] = 0x05;
338  else
339  rep_data[0] = 0x06;
340 
341  rep_data[1] = 0x00;
342  limit = 3;
343  do {
344  ret = hdev->hid_output_raw_report(hdev,
345  rep_data, 2, HID_FEATURE_REPORT);
346  } while (ret < 0 && limit-- > 0);
347 
348  if (ret >= 0) {
349  wdata->high_speed = speed;
350  return;
351  }
352  }
353 
354  /*
355  * Note that if the raw queries fail, it's not a hard failure
356  * and it is safe to continue
357  */
358  hid_warn(hdev, "failed to poke device, command %d, err %d\n",
359  rep_data[0], ret);
360  break;
361  case USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH:
362  if (speed == 1)
363  wdata->features &= ~0x20;
364  else
365  wdata->features |= 0x20;
366 
367  rep_data[0] = 0x03;
368  rep_data[1] = wdata->features;
369 
370  ret = hdev->hid_output_raw_report(hdev, rep_data, 2,
371  HID_FEATURE_REPORT);
372  if (ret >= 0)
373  wdata->high_speed = speed;
374  break;
375  }
376 
377  return;
378 }
379 
380 static ssize_t wacom_show_speed(struct device *dev,
381  struct device_attribute
382  *attr, char *buf)
383 {
384  struct wacom_data *wdata = dev_get_drvdata(dev);
385 
386  return snprintf(buf, PAGE_SIZE, "%i\n", wdata->high_speed);
387 }
388 
389 static ssize_t wacom_store_speed(struct device *dev,
390  struct device_attribute *attr,
391  const char *buf, size_t count)
392 {
393  struct hid_device *hdev = container_of(dev, struct hid_device, dev);
394  int new_speed;
395 
396  if (sscanf(buf, "%1d", &new_speed ) != 1)
397  return -EINVAL;
398 
399  if (new_speed == 0 || new_speed == 1) {
400  wacom_set_features(hdev, new_speed);
401  return strnlen(buf, PAGE_SIZE);
402  } else
403  return -EINVAL;
404 }
405 
406 static DEVICE_ATTR(speed, S_IRUGO | S_IWUSR | S_IWGRP,
407  wacom_show_speed, wacom_store_speed);
408 
409 #define WACOM_STORE(OLED_ID) \
410 static ssize_t wacom_oled##OLED_ID##_store(struct device *dev, \
411  struct device_attribute *attr, \
412  const char *buf, size_t count) \
413 { \
414  struct hid_device *hdev = container_of(dev, struct hid_device, \
415  dev); \
416  \
417  if (count != 256) \
418  return -EINVAL; \
419  \
420  wacom_set_image(hdev, buf, OLED_ID); \
421  \
422  return count; \
423 } \
424  \
425 static DEVICE_ATTR(oled##OLED_ID##_img, S_IWUSR | S_IWGRP, NULL, \
426  wacom_oled##OLED_ID##_store)
427 
428 WACOM_STORE(0);
429 WACOM_STORE(1);
430 WACOM_STORE(2);
431 WACOM_STORE(3);
432 WACOM_STORE(4);
433 WACOM_STORE(5);
434 WACOM_STORE(6);
435 WACOM_STORE(7);
436 
437 static int wacom_gr_parse_report(struct hid_device *hdev,
438  struct wacom_data *wdata,
439  struct input_dev *input, unsigned char *data)
440 {
441  int tool, x, y, rw;
442 
443  tool = 0;
444  /* Get X & Y positions */
445  x = le16_to_cpu(*(__le16 *) &data[2]);
446  y = le16_to_cpu(*(__le16 *) &data[4]);
447 
448  /* Get current tool identifier */
449  if (data[1] & 0x90) { /* If pen is in the in/active area */
450  switch ((data[1] >> 5) & 3) {
451  case 0: /* Pen */
452  tool = BTN_TOOL_PEN;
453  break;
454 
455  case 1: /* Rubber */
456  tool = BTN_TOOL_RUBBER;
457  break;
458 
459  case 2: /* Mouse with wheel */
460  case 3: /* Mouse without wheel */
461  tool = BTN_TOOL_MOUSE;
462  break;
463  }
464 
465  /* Reset tool if out of active tablet area */
466  if (!(data[1] & 0x10))
467  tool = 0;
468  }
469 
470  /* If tool changed, notify input subsystem */
471  if (wdata->tool != tool) {
472  if (wdata->tool) {
473  /* Completely reset old tool state */
474  if (wdata->tool == BTN_TOOL_MOUSE) {
475  input_report_key(input, BTN_LEFT, 0);
476  input_report_key(input, BTN_RIGHT, 0);
477  input_report_key(input, BTN_MIDDLE, 0);
478  input_report_abs(input, ABS_DISTANCE,
479  input_abs_get_max(input, ABS_DISTANCE));
480  } else {
481  input_report_key(input, BTN_TOUCH, 0);
482  input_report_key(input, BTN_STYLUS, 0);
483  input_report_key(input, BTN_STYLUS2, 0);
484  input_report_abs(input, ABS_PRESSURE, 0);
485  }
486  input_report_key(input, wdata->tool, 0);
487  input_sync(input);
488  }
489  wdata->tool = tool;
490  if (tool)
491  input_report_key(input, tool, 1);
492  }
493 
494  if (tool) {
495  input_report_abs(input, ABS_X, x);
496  input_report_abs(input, ABS_Y, y);
497 
498  switch ((data[1] >> 5) & 3) {
499  case 2: /* Mouse with wheel */
500  input_report_key(input, BTN_MIDDLE, data[1] & 0x04);
501  rw = (data[6] & 0x01) ? -1 :
502  (data[6] & 0x02) ? 1 : 0;
503  input_report_rel(input, REL_WHEEL, rw);
504  /* fall through */
505 
506  case 3: /* Mouse without wheel */
507  input_report_key(input, BTN_LEFT, data[1] & 0x01);
508  input_report_key(input, BTN_RIGHT, data[1] & 0x02);
509  /* Compute distance between mouse and tablet */
510  rw = 44 - (data[6] >> 2);
511  if (rw < 0)
512  rw = 0;
513  else if (rw > 31)
514  rw = 31;
515  input_report_abs(input, ABS_DISTANCE, rw);
516  break;
517 
518  default:
519  input_report_abs(input, ABS_PRESSURE,
520  data[6] | (((__u16) (data[1] & 0x08)) << 5));
521  input_report_key(input, BTN_TOUCH, data[1] & 0x01);
522  input_report_key(input, BTN_STYLUS, data[1] & 0x02);
523  input_report_key(input, BTN_STYLUS2, (tool == BTN_TOOL_PEN) && data[1] & 0x04);
524  break;
525  }
526 
527  input_sync(input);
528  }
529 
530  /* Report the state of the two buttons at the top of the tablet
531  * as two extra fingerpad keys (buttons 4 & 5). */
532  rw = data[7] & 0x03;
533  if (rw != wdata->butstate) {
534  wdata->butstate = rw;
535  input_report_key(input, BTN_0, rw & 0x02);
536  input_report_key(input, BTN_1, rw & 0x01);
537  input_report_key(input, BTN_TOOL_FINGER, 0xf0);
538  input_event(input, EV_MSC, MSC_SERIAL, 0xf0);
539  input_sync(input);
540  }
541 
542  /* Store current battery capacity and power supply state*/
543  rw = (data[7] >> 2 & 0x07);
544  if (rw != wdata->power_raw) {
545  wdata->power_raw = rw;
546  wdata->battery_capacity = batcap_gr[rw];
547  if (rw == 7)
548  wdata->ps_connected = 1;
549  else
550  wdata->ps_connected = 0;
551  }
552  return 1;
553 }
554 
555 static void wacom_i4_parse_button_report(struct wacom_data *wdata,
556  struct input_dev *input, unsigned char *data)
557 {
558  __u16 new_butstate;
559  __u8 new_whlstate;
560  __u8 sync = 0;
561 
562  new_whlstate = data[1];
563  if (new_whlstate != wdata->whlstate) {
564  wdata->whlstate = new_whlstate;
565  if (new_whlstate & 0x80) {
566  input_report_key(input, BTN_TOUCH, 1);
567  input_report_abs(input, ABS_WHEEL, (new_whlstate & 0x7f));
568  input_report_key(input, BTN_TOOL_FINGER, 1);
569  } else {
570  input_report_key(input, BTN_TOUCH, 0);
571  input_report_abs(input, ABS_WHEEL, 0);
572  input_report_key(input, BTN_TOOL_FINGER, 0);
573  }
574  sync = 1;
575  }
576 
577  new_butstate = (data[3] << 1) | (data[2] & 0x01);
578  if (new_butstate != wdata->butstate) {
579  wdata->butstate = new_butstate;
580  input_report_key(input, BTN_0, new_butstate & 0x001);
581  input_report_key(input, BTN_1, new_butstate & 0x002);
582  input_report_key(input, BTN_2, new_butstate & 0x004);
583  input_report_key(input, BTN_3, new_butstate & 0x008);
584  input_report_key(input, BTN_4, new_butstate & 0x010);
585  input_report_key(input, BTN_5, new_butstate & 0x020);
586  input_report_key(input, BTN_6, new_butstate & 0x040);
587  input_report_key(input, BTN_7, new_butstate & 0x080);
588  input_report_key(input, BTN_8, new_butstate & 0x100);
589  input_report_key(input, BTN_TOOL_FINGER, 1);
590  sync = 1;
591  }
592 
593  if (sync) {
594  input_report_abs(input, ABS_MISC, PAD_DEVICE_ID);
595  input_event(input, EV_MSC, MSC_SERIAL, 0xffffffff);
596  input_sync(input);
597  }
598 }
599 
600 static void wacom_i4_parse_pen_report(struct wacom_data *wdata,
601  struct input_dev *input, unsigned char *data)
602 {
603  __u16 x, y, pressure;
604  __u8 distance;
605  __u8 tilt_x, tilt_y;
606 
607  switch (data[1]) {
608  case 0x80: /* Out of proximity report */
609  input_report_key(input, BTN_TOUCH, 0);
610  input_report_abs(input, ABS_PRESSURE, 0);
611  input_report_key(input, BTN_STYLUS, 0);
612  input_report_key(input, BTN_STYLUS2, 0);
613  input_report_key(input, wdata->tool, 0);
614  input_report_abs(input, ABS_MISC, 0);
615  input_event(input, EV_MSC, MSC_SERIAL, wdata->serial);
616  wdata->tool = 0;
617  input_sync(input);
618  break;
619  case 0xC2: /* Tool report */
620  wdata->id = ((data[2] << 4) | (data[3] >> 4) |
621  ((data[7] & 0x0f) << 20) |
622  ((data[8] & 0xf0) << 12));
623  wdata->serial = ((data[3] & 0x0f) << 28) +
624  (data[4] << 20) + (data[5] << 12) +
625  (data[6] << 4) + (data[7] >> 4);
626 
627  switch (wdata->id) {
628  case 0x100802:
629  wdata->tool = BTN_TOOL_PEN;
630  break;
631  case 0x10080A:
632  wdata->tool = BTN_TOOL_RUBBER;
633  break;
634  }
635  break;
636  default: /* Position/pressure report */
637  x = data[2] << 9 | data[3] << 1 | ((data[9] & 0x02) >> 1);
638  y = data[4] << 9 | data[5] << 1 | (data[9] & 0x01);
639  pressure = (data[6] << 3) | ((data[7] & 0xC0) >> 5)
640  | (data[1] & 0x01);
641  distance = (data[9] >> 2) & 0x3f;
642  tilt_x = ((data[7] << 1) & 0x7e) | (data[8] >> 7);
643  tilt_y = data[8] & 0x7f;
644 
645  input_report_key(input, BTN_TOUCH, pressure > 1);
646 
647  input_report_key(input, BTN_STYLUS, data[1] & 0x02);
648  input_report_key(input, BTN_STYLUS2, data[1] & 0x04);
649  input_report_key(input, wdata->tool, 1);
650  input_report_abs(input, ABS_X, x);
651  input_report_abs(input, ABS_Y, y);
652  input_report_abs(input, ABS_PRESSURE, pressure);
653  input_report_abs(input, ABS_DISTANCE, distance);
654  input_report_abs(input, ABS_TILT_X, tilt_x);
655  input_report_abs(input, ABS_TILT_Y, tilt_y);
656  input_report_abs(input, ABS_MISC, wdata->id);
657  input_event(input, EV_MSC, MSC_SERIAL, wdata->serial);
658  input_report_key(input, wdata->tool, 1);
659  input_sync(input);
660  break;
661  }
662 
663  return;
664 }
665 
666 static void wacom_i4_parse_report(struct hid_device *hdev,
667  struct wacom_data *wdata,
668  struct input_dev *input, unsigned char *data)
669 {
670  switch (data[0]) {
671  case 0x00: /* Empty report */
672  break;
673  case 0x02: /* Pen report */
674  wacom_i4_parse_pen_report(wdata, input, data);
675  break;
676  case 0x03: /* Features Report */
677  wdata->features = data[2];
678  break;
679  case 0x0C: /* Button report */
680  wacom_i4_parse_button_report(wdata, input, data);
681  break;
682  default:
683  hid_err(hdev, "Unknown report: %d,%d\n", data[0], data[1]);
684  break;
685  }
686 }
687 
688 static int wacom_raw_event(struct hid_device *hdev, struct hid_report *report,
689  u8 *raw_data, int size)
690 {
691  struct wacom_data *wdata = hid_get_drvdata(hdev);
692  struct hid_input *hidinput;
693  struct input_dev *input;
694  unsigned char *data = (unsigned char *) raw_data;
695  int i;
696  __u8 power_raw;
697 
698  if (!(hdev->claimed & HID_CLAIMED_INPUT))
699  return 0;
700 
701  hidinput = list_entry(hdev->inputs.next, struct hid_input, list);
702  input = hidinput->input;
703 
704  switch (hdev->product) {
705  case USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH:
706  if (data[0] == 0x03) {
707  return wacom_gr_parse_report(hdev, wdata, input, data);
708  } else {
709  hid_err(hdev, "Unknown report: %d,%d size:%d\n",
710  data[0], data[1], size);
711  return 0;
712  }
713  break;
714  case USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH:
715  i = 1;
716 
717  switch (data[0]) {
718  case 0x04:
719  wacom_i4_parse_report(hdev, wdata, input, data + i);
720  i += 10;
721  /* fall through */
722  case 0x03:
723  wacom_i4_parse_report(hdev, wdata, input, data + i);
724  i += 10;
725  wacom_i4_parse_report(hdev, wdata, input, data + i);
726  power_raw = data[i+10];
727  if (power_raw != wdata->power_raw) {
728  wdata->power_raw = power_raw;
729  wdata->battery_capacity = batcap_i4[power_raw & 0x07];
730  wdata->ps_connected = power_raw & 0x08;
731  }
732 
733  break;
734  default:
735  hid_err(hdev, "Unknown report: %d,%d size:%d\n",
736  data[0], data[1], size);
737  return 0;
738  }
739  }
740  return 1;
741 }
742 
743 static int wacom_input_mapped(struct hid_device *hdev, struct hid_input *hi,
744  struct hid_field *field, struct hid_usage *usage, unsigned long **bit,
745  int *max)
746 {
747  struct input_dev *input = hi->input;
748 
749  __set_bit(INPUT_PROP_POINTER, input->propbit);
750 
751  /* Basics */
752  input->evbit[0] |= BIT(EV_KEY) | BIT(EV_ABS) | BIT(EV_REL);
753 
754  __set_bit(REL_WHEEL, input->relbit);
755 
756  __set_bit(BTN_TOOL_PEN, input->keybit);
757  __set_bit(BTN_TOUCH, input->keybit);
758  __set_bit(BTN_STYLUS, input->keybit);
759  __set_bit(BTN_STYLUS2, input->keybit);
760  __set_bit(BTN_LEFT, input->keybit);
761  __set_bit(BTN_RIGHT, input->keybit);
762  __set_bit(BTN_MIDDLE, input->keybit);
763 
764  /* Pad */
765  input_set_capability(input, EV_MSC, MSC_SERIAL);
766 
767  __set_bit(BTN_0, input->keybit);
768  __set_bit(BTN_1, input->keybit);
769  __set_bit(BTN_TOOL_FINGER, input->keybit);
770 
771  /* Distance, rubber and mouse */
772  __set_bit(BTN_TOOL_RUBBER, input->keybit);
773  __set_bit(BTN_TOOL_MOUSE, input->keybit);
774 
775  switch (hdev->product) {
776  case USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH:
777  input_set_abs_params(input, ABS_X, 0, 16704, 4, 0);
778  input_set_abs_params(input, ABS_Y, 0, 12064, 4, 0);
779  input_set_abs_params(input, ABS_PRESSURE, 0, 511, 0, 0);
780  input_set_abs_params(input, ABS_DISTANCE, 0, 32, 0, 0);
781  break;
782  case USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH:
783  __set_bit(ABS_WHEEL, input->absbit);
784  __set_bit(ABS_MISC, input->absbit);
785  __set_bit(BTN_2, input->keybit);
786  __set_bit(BTN_3, input->keybit);
787  __set_bit(BTN_4, input->keybit);
788  __set_bit(BTN_5, input->keybit);
789  __set_bit(BTN_6, input->keybit);
790  __set_bit(BTN_7, input->keybit);
791  __set_bit(BTN_8, input->keybit);
792  input_set_abs_params(input, ABS_WHEEL, 0, 71, 0, 0);
793  input_set_abs_params(input, ABS_X, 0, 40640, 4, 0);
794  input_set_abs_params(input, ABS_Y, 0, 25400, 4, 0);
795  input_set_abs_params(input, ABS_PRESSURE, 0, 2047, 0, 0);
796  input_set_abs_params(input, ABS_DISTANCE, 0, 63, 0, 0);
797  input_set_abs_params(input, ABS_TILT_X, 0, 127, 0, 0);
798  input_set_abs_params(input, ABS_TILT_Y, 0, 127, 0, 0);
799  break;
800  }
801 
802  return 0;
803 }
804 
805 static int wacom_probe(struct hid_device *hdev,
806  const struct hid_device_id *id)
807 {
808  struct wacom_data *wdata;
809  int ret;
810 
811  wdata = kzalloc(sizeof(*wdata), GFP_KERNEL);
812  if (wdata == NULL) {
813  hid_err(hdev, "can't alloc wacom descriptor\n");
814  return -ENOMEM;
815  }
816 
817  hid_set_drvdata(hdev, wdata);
818 
819  /* Parse the HID report now */
820  ret = hid_parse(hdev);
821  if (ret) {
822  hid_err(hdev, "parse failed\n");
823  goto err_free;
824  }
825 
826  ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
827  if (ret) {
828  hid_err(hdev, "hw start failed\n");
829  goto err_free;
830  }
831 
832  ret = device_create_file(&hdev->dev, &dev_attr_speed);
833  if (ret)
834  hid_warn(hdev,
835  "can't create sysfs speed attribute err: %d\n", ret);
836 
837 #define OLED_INIT(OLED_ID) \
838  do { \
839  ret = device_create_file(&hdev->dev, \
840  &dev_attr_oled##OLED_ID##_img); \
841  if (ret) \
842  hid_warn(hdev, \
843  "can't create sysfs oled attribute, err: %d\n", ret);\
844  } while (0)
845 
846 OLED_INIT(0);
847 OLED_INIT(1);
848 OLED_INIT(2);
849 OLED_INIT(3);
850 OLED_INIT(4);
851 OLED_INIT(5);
852 OLED_INIT(6);
853 OLED_INIT(7);
854 
855  wdata->features = 0;
856  wacom_set_features(hdev, 1);
857 
858  if (hdev->product == USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH) {
859  sprintf(hdev->name, "%s", "Wacom Intuos4 WL");
860  ret = wacom_initialize_leds(hdev);
861  if (ret)
862  hid_warn(hdev,
863  "can't create led attribute, err: %d\n", ret);
864  }
865 
866  wdata->battery.properties = wacom_battery_props;
867  wdata->battery.num_properties = ARRAY_SIZE(wacom_battery_props);
868  wdata->battery.get_property = wacom_battery_get_property;
869  wdata->battery.name = "wacom_battery";
870  wdata->battery.type = POWER_SUPPLY_TYPE_BATTERY;
871  wdata->battery.use_for_apm = 0;
872 
873 
874  ret = power_supply_register(&hdev->dev, &wdata->battery);
875  if (ret) {
876  hid_err(hdev, "can't create sysfs battery attribute, err: %d\n",
877  ret);
878  goto err_battery;
879  }
880 
881  power_supply_powers(&wdata->battery, &hdev->dev);
882 
883  wdata->ac.properties = wacom_ac_props;
884  wdata->ac.num_properties = ARRAY_SIZE(wacom_ac_props);
885  wdata->ac.get_property = wacom_ac_get_property;
886  wdata->ac.name = "wacom_ac";
887  wdata->ac.type = POWER_SUPPLY_TYPE_MAINS;
888  wdata->ac.use_for_apm = 0;
889 
890  ret = power_supply_register(&hdev->dev, &wdata->ac);
891  if (ret) {
892  hid_err(hdev,
893  "can't create ac battery attribute, err: %d\n", ret);
894  goto err_ac;
895  }
896 
897  power_supply_powers(&wdata->ac, &hdev->dev);
898  return 0;
899 
900 err_ac:
901  power_supply_unregister(&wdata->battery);
902 err_battery:
903  wacom_destroy_leds(hdev);
904  device_remove_file(&hdev->dev, &dev_attr_oled0_img);
905  device_remove_file(&hdev->dev, &dev_attr_oled1_img);
906  device_remove_file(&hdev->dev, &dev_attr_oled2_img);
907  device_remove_file(&hdev->dev, &dev_attr_oled3_img);
908  device_remove_file(&hdev->dev, &dev_attr_oled4_img);
909  device_remove_file(&hdev->dev, &dev_attr_oled5_img);
910  device_remove_file(&hdev->dev, &dev_attr_oled6_img);
911  device_remove_file(&hdev->dev, &dev_attr_oled7_img);
912  device_remove_file(&hdev->dev, &dev_attr_speed);
913  hid_hw_stop(hdev);
914 err_free:
915  kfree(wdata);
916  return ret;
917 }
918 
919 static void wacom_remove(struct hid_device *hdev)
920 {
921  struct wacom_data *wdata = hid_get_drvdata(hdev);
922 
923  wacom_destroy_leds(hdev);
924  device_remove_file(&hdev->dev, &dev_attr_oled0_img);
925  device_remove_file(&hdev->dev, &dev_attr_oled1_img);
926  device_remove_file(&hdev->dev, &dev_attr_oled2_img);
927  device_remove_file(&hdev->dev, &dev_attr_oled3_img);
928  device_remove_file(&hdev->dev, &dev_attr_oled4_img);
929  device_remove_file(&hdev->dev, &dev_attr_oled5_img);
930  device_remove_file(&hdev->dev, &dev_attr_oled6_img);
931  device_remove_file(&hdev->dev, &dev_attr_oled7_img);
932  device_remove_file(&hdev->dev, &dev_attr_speed);
933  hid_hw_stop(hdev);
934 
935  power_supply_unregister(&wdata->battery);
936  power_supply_unregister(&wdata->ac);
937  kfree(hid_get_drvdata(hdev));
938 }
939 
940 static const struct hid_device_id wacom_devices[] = {
941  { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
942  { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH) },
943 
944  { }
945 };
946 MODULE_DEVICE_TABLE(hid, wacom_devices);
947 
948 static struct hid_driver wacom_driver = {
949  .name = "wacom",
950  .id_table = wacom_devices,
951  .probe = wacom_probe,
952  .remove = wacom_remove,
953  .raw_event = wacom_raw_event,
954  .input_mapped = wacom_input_mapped,
955 };
956 
957 static int __init wacom_init(void)
958 {
959  int ret;
960 
961  ret = hid_register_driver(&wacom_driver);
962  if (ret)
963  pr_err("can't register wacom driver\n");
964  return ret;
965 }
966 
967 static void __exit wacom_exit(void)
968 {
969  hid_unregister_driver(&wacom_driver);
970 }
971 
972 module_init(wacom_init);
973 module_exit(wacom_exit);
974 MODULE_DESCRIPTION("Driver for Wacom Graphire Bluetooth and Wacom Intuos4 WL");
975 MODULE_LICENSE("GPL");
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