Version:  2.0.40 2.2.26 2.4.37 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 3.15 3.16

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

This page was automatically generated by LXR 0.3.1 (source).  •  Linux is a registered trademark of Linus Torvalds  •  Contact us