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");