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