Version:  2.6.34 2.6.35 2.6.36 2.6.37 2.6.38 2.6.39 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14

Linux/drivers/hid/hid-wacom.c

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

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