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");