drivers/hid/hid-magicmouse.c

   1 /*
   2  *   Apple "Magic" Wireless Mouse driver
   3  *
   4  *   Copyright (c) 2010 Michael Poole <mdpoole@troilus.org>
   5  *   Copyright (c) 2010 Chase Douglas <chase.douglas@canonical.com>
   6  */
   7
   8 /*
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU General Public License as published by the Free
  11  * Software Foundation; either version 2 of the License, or (at your option)
  12  * any later version.
  13  */
  14
  15 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  16
  17 #include <linux/device.h>
  18 #include <linux/hid.h>
  19 #include <linux/input/mt.h>
  20 #include <linux/module.h>
  21 #include <linux/slab.h>
  22 #include <linux/usb.h>
  23
  24 #include "hid-ids.h"
  25
  26 static bool emulate_3button = true;
  27 module_param(emulate_3button, bool, 0644);
  28 MODULE_PARM_DESC(emulate_3button, "Emulate a middle button");
  29
  30 static int middle_button_start = -350;
  31 static int middle_button_stop = +350;
  32
  33 static bool emulate_scroll_wheel = true;
  34 module_param(emulate_scroll_wheel, bool, 0644);
  35 MODULE_PARM_DESC(emulate_scroll_wheel, "Emulate a scroll wheel");
  36
  37 static unsigned int scroll_speed = 32;
  38 static int param_set_scroll_speed(const char *val, struct kernel_param *kp) {
  39         unsigned long speed;
  40         if (!val || strict_strtoul(val, 0, &speed) || speed > 63)
  41                 return -EINVAL;
  42         scroll_speed = speed;
  43         return 0;
  44 }
  45 module_param_call(scroll_speed, param_set_scroll_speed, param_get_uint, &scroll_speed, 0644);
  46 MODULE_PARM_DESC(scroll_speed, "Scroll speed, value from 0 (slow) to 63 (fast)");
  47
  48 static bool scroll_acceleration = false;
  49 module_param(scroll_acceleration, bool, 0644);
  50 MODULE_PARM_DESC(scroll_acceleration, "Accelerate sequential scroll events");
  51
  52 static bool report_undeciphered;
  53 module_param(report_undeciphered, bool, 0644);
  54 MODULE_PARM_DESC(report_undeciphered, "Report undeciphered multi-touch state field using a MSC_RAW event");
  55
  56 #define TRACKPAD_REPORT_ID 0x28
  57 #define MOUSE_REPORT_ID    0x29
  58 #define DOUBLE_REPORT_ID   0xf7
  59 /* These definitions are not precise, but they're close enough.  (Bits
  60  * 0x03 seem to indicate the aspect ratio of the touch, bits 0x70 seem
  61  * to be some kind of bit mask -- 0x20 may be a near-field reading,
  62  * and 0x40 is actual contact, and 0x10 may be a start/stop or change
  63  * indication.)
  64  */
  65 #define TOUCH_STATE_MASK  0xf0
  66 #define TOUCH_STATE_NONE  0x00
  67 #define TOUCH_STATE_START 0x30
  68 #define TOUCH_STATE_DRAG  0x40
  69
  70 #define SCROLL_ACCEL_DEFAULT 7
  71
  72 /* Touch surface information. Dimension is in hundredths of a mm, min and max
  73  * are in units. */
  74 #define MOUSE_DIMENSION_X (float)9056
  75 #define MOUSE_MIN_X -1100
  76 #define MOUSE_MAX_X 1258
  77 #define MOUSE_RES_X ((MOUSE_MAX_X - MOUSE_MIN_X) / (MOUSE_DIMENSION_X / 100))
  78 #define MOUSE_DIMENSION_Y (float)5152
  79 #define MOUSE_MIN_Y -1589
  80 #define MOUSE_MAX_Y 2047
  81 #define MOUSE_RES_Y ((MOUSE_MAX_Y - MOUSE_MIN_Y) / (MOUSE_DIMENSION_Y / 100))
  82
  83 #define TRACKPAD_DIMENSION_X (float)13000
  84 #define TRACKPAD_MIN_X -2909
  85 #define TRACKPAD_MAX_X 3167
  86 #define TRACKPAD_RES_X \
  87         ((TRACKPAD_MAX_X - TRACKPAD_MIN_X) / (TRACKPAD_DIMENSION_X / 100))
  88 #define TRACKPAD_DIMENSION_Y (float)11000
  89 #define TRACKPAD_MIN_Y -2456
  90 #define TRACKPAD_MAX_Y 2565
  91 #define TRACKPAD_RES_Y \
  92         ((TRACKPAD_MAX_Y - TRACKPAD_MIN_Y) / (TRACKPAD_DIMENSION_Y / 100))
  93
  94 /**
  95  * struct magicmouse_sc - Tracks Magic Mouse-specific data.
  96  * @input: Input device through which we report events.
  97  * @quirks: Currently unused.
  98  * @ntouches: Number of touches in most recent touch report.
  99  * @scroll_accel: Number of consecutive scroll motions.
 100  * @scroll_jiffies: Time of last scroll motion.
 101  * @touches: Most recent data for a touch, indexed by tracking ID.
 102  * @tracking_ids: Mapping of current touch input data to @touches.
 103  */
 104 struct magicmouse_sc {
 105         struct input_dev *input;
 106         unsigned long quirks;
 107
 108         int ntouches;
 109         int scroll_accel;
 110         unsigned long scroll_jiffies;
 111
 112         struct {
 113                 short x;
 114                 short y;
 115                 short scroll_x;
 116                 short scroll_y;
 117                 u8 size;
 118         } touches[16];
 119         int tracking_ids[16];
 120 };
 121
 122 static int magicmouse_firm_touch(struct magicmouse_sc *msc)
 123 {
 124         int touch = -1;
 125         int ii;
 126
 127         /* If there is only one "firm" touch, set touch to its
 128          * tracking ID.
 129          */
 130         for (ii = 0; ii < msc->ntouches; ii++) {
 131                 int idx = msc->tracking_ids[ii];
 132                 if (msc->touches[idx].size < 8) {
 133                         /* Ignore this touch. */
 134                 } else if (touch >= 0) {
 135                         touch = -1;
 136                         break;
 137                 } else {
 138                         touch = idx;
 139                 }
 140         }
 141
 142         return touch;
 143 }
 144
 145 static void magicmouse_emit_buttons(struct magicmouse_sc *msc, int state)
 146 {
 147         int last_state = test_bit(BTN_LEFT, msc->input->key) << 0 |
 148                 test_bit(BTN_RIGHT, msc->input->key) << 1 |
 149                 test_bit(BTN_MIDDLE, msc->input->key) << 2;
 150
 151         if (emulate_3button) {
 152                 int id;
 153
 154                 /* If some button was pressed before, keep it held
 155                  * down.  Otherwise, if there's exactly one firm
 156                  * touch, use that to override the mouse's guess.
 157                  */
 158                 if (state == 0) {
 159                         /* The button was released. */
 160                 } else if (last_state != 0) {
 161                         state = last_state;
 162                 } else if ((id = magicmouse_firm_touch(msc)) >= 0) {
 163                         int x = msc->touches[id].x;
 164                         if (x < middle_button_start)
 165                                 state = 1;
 166                         else if (x > middle_button_stop)
 167                                 state = 2;
 168                         else
 169                                 state = 4;
 170                 } /* else: we keep the mouse's guess */
 171
 172                 input_report_key(msc->input, BTN_MIDDLE, state & 4);
 173         }
 174
 175         input_report_key(msc->input, BTN_LEFT, state & 1);
 176         input_report_key(msc->input, BTN_RIGHT, state & 2);
 177
 178         if (state != last_state)
 179                 msc->scroll_accel = SCROLL_ACCEL_DEFAULT;
 180 }
 181
 182 static void magicmouse_emit_touch(struct magicmouse_sc *msc, int raw_id, u8 *tdata)
 183 {
 184         struct input_dev *input = msc->input;
 185         int id, x, y, size, orientation, touch_major, touch_minor, state, down;
 186
 187         if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE) {
 188                 id = (tdata[6] << 2 | tdata[5] >> 6) & 0xf;
 189                 x = (tdata[1] << 28 | tdata[0] << 20) >> 20;
 190                 y = -((tdata[2] << 24 | tdata[1] << 16) >> 20);
 191                 size = tdata[5] & 0x3f;
 192                 orientation = (tdata[6] >> 2) - 32;
 193                 touch_major = tdata[3];
 194                 touch_minor = tdata[4];
 195                 state = tdata[7] & TOUCH_STATE_MASK;
 196                 down = state != TOUCH_STATE_NONE;
 197         } else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
 198                 id = (tdata[7] << 2 | tdata[6] >> 6) & 0xf;
 199                 x = (tdata[1] << 27 | tdata[0] << 19) >> 19;
 200                 y = -((tdata[3] << 30 | tdata[2] << 22 | tdata[1] << 14) >> 19);
 201                 size = tdata[6] & 0x3f;
 202                 orientation = (tdata[7] >> 2) - 32;
 203                 touch_major = tdata[4];
 204                 touch_minor = tdata[5];
 205                 state = tdata[8] & TOUCH_STATE_MASK;
 206                 down = state != TOUCH_STATE_NONE;
 207         }
 208
 209         /* Store tracking ID and other fields. */
 210         msc->tracking_ids[raw_id] = id;
 211         msc->touches[id].x = x;
 212         msc->touches[id].y = y;
 213         msc->touches[id].size = size;
 214
 215         /* If requested, emulate a scroll wheel by detecting small
 216          * vertical touch motions.
 217          */
 218         if (emulate_scroll_wheel) {
 219                 unsigned long now = jiffies;
 220                 int step_x = msc->touches[id].scroll_x - x;
 221                 int step_y = msc->touches[id].scroll_y - y;
 222
 223                 /* Calculate and apply the scroll motion. */
 224                 switch (state) {
 225                 case TOUCH_STATE_START:
 226                         msc->touches[id].scroll_x = x;
 227                         msc->touches[id].scroll_y = y;
 228
 229                         /* Reset acceleration after half a second. */
 230                         if (scroll_acceleration && time_before(now,
 231                                                 msc->scroll_jiffies + HZ / 2))
 232                                 msc->scroll_accel = max_t(int,
 233                                                 msc->scroll_accel - 1, 1);
 234                         else
 235                                 msc->scroll_accel = SCROLL_ACCEL_DEFAULT;
 236
 237                         break;
 238                 case TOUCH_STATE_DRAG:
 239                         step_x /= (64 - (int)scroll_speed) * msc->scroll_accel;
 240                         if (step_x != 0) {
 241                                 msc->touches[id].scroll_x -= step_x *
 242                                         (64 - scroll_speed) * msc->scroll_accel;
 243                                 msc->scroll_jiffies = now;
 244                                 input_report_rel(input, REL_HWHEEL, -step_x);
 245                         }
 246
 247                         step_y /= (64 - (int)scroll_speed) * msc->scroll_accel;
 248                         if (step_y != 0) {
 249                                 msc->touches[id].scroll_y -= step_y *
 250                                         (64 - scroll_speed) * msc->scroll_accel;
 251                                 msc->scroll_jiffies = now;
 252                                 input_report_rel(input, REL_WHEEL, step_y);
 253                         }
 254                         break;
 255                 }
 256         }
 257
 258         if (down)
 259                 msc->ntouches++;
 260
 261         input_mt_slot(input, id);
 262         input_mt_report_slot_state(input, MT_TOOL_FINGER, down);
 263
 264         /* Generate the input events for this touch. */
 265         if (down) {
 266                 input_report_abs(input, ABS_MT_TOUCH_MAJOR, touch_major << 2);
 267                 input_report_abs(input, ABS_MT_TOUCH_MINOR, touch_minor << 2);
 268                 input_report_abs(input, ABS_MT_ORIENTATION, -orientation);
 269                 input_report_abs(input, ABS_MT_POSITION_X, x);
 270                 input_report_abs(input, ABS_MT_POSITION_Y, y);
 271
 272                 if (report_undeciphered) {
 273                         if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE)
 274                                 input_event(input, EV_MSC, MSC_RAW, tdata[7]);
 275                         else /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
 276                                 input_event(input, EV_MSC, MSC_RAW, tdata[8]);
 277                 }
 278         }
 279 }
 280
 281 static int magicmouse_raw_event(struct hid_device *hdev,
 282                 struct hid_report *report, u8 *data, int size)
 283 {
 284         struct magicmouse_sc *msc = hid_get_drvdata(hdev);
 285         struct input_dev *input = msc->input;
 286         int x = 0, y = 0, ii, clicks = 0, npoints;
 287
 288         switch (data[0]) {
 289         case TRACKPAD_REPORT_ID:
 290                 /* Expect four bytes of prefix, and N*9 bytes of touch data. */
 291                 if (size < 4 || ((size - 4) % 9) != 0)
 292                         return 0;
 293                 npoints = (size - 4) / 9;
 294                 msc->ntouches = 0;
 295                 for (ii = 0; ii < npoints; ii++)
 296                         magicmouse_emit_touch(msc, ii, data + ii * 9 + 4);
 297
 298                 clicks = data[1];
 299
 300                 /* The following bits provide a device specific timestamp. They
 301                  * are unused here.
 302                  *
 303                  * ts = data[1] >> 6 | data[2] << 2 | data[3] << 10;
 304                  */
 305                 break;
 306         case MOUSE_REPORT_ID:
 307                 /* Expect six bytes of prefix, and N*8 bytes of touch data. */
 308                 if (size < 6 || ((size - 6) % 8) != 0)
 309                         return 0;
 310                 npoints = (size - 6) / 8;
 311                 msc->ntouches = 0;
 312                 for (ii = 0; ii < npoints; ii++)
 313                         magicmouse_emit_touch(msc, ii, data + ii * 8 + 6);
 314
 315                 /* When emulating three-button mode, it is important
 316                  * to have the current touch information before
 317                  * generating a click event.
 318                  */
 319                 x = (int)(((data[3] & 0x0c) << 28) | (data[1] << 22)) >> 22;
 320                 y = (int)(((data[3] & 0x30) << 26) | (data[2] << 22)) >> 22;
 321                 clicks = data[3];
 322
 323                 /* The following bits provide a device specific timestamp. They
 324                  * are unused here.
 325                  *
 326                  * ts = data[3] >> 6 | data[4] << 2 | data[5] << 10;
 327                  */
 328                 break;
 329         case DOUBLE_REPORT_ID:
 330                 /* Sometimes the trackpad sends two touch reports in one
 331                  * packet.
 332                  */
 333                 magicmouse_raw_event(hdev, report, data + 2, data[1]);
 334                 magicmouse_raw_event(hdev, report, data + 2 + data[1],
 335                         size - 2 - data[1]);
 336                 break;
 337         default:
 338                 return 0;
 339         }
 340
 341         if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE) {
 342                 magicmouse_emit_buttons(msc, clicks & 3);
 343                 input_report_rel(input, REL_X, x);
 344                 input_report_rel(input, REL_Y, y);
 345         } else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
 346                 input_report_key(input, BTN_MOUSE, clicks & 1);
 347                 input_mt_report_pointer_emulation(input, true);
 348         }
 349
 350         input_sync(input);
 351         return 1;
 352 }
 353
 354 static int magicmouse_setup_input(struct input_dev *input, struct hid_device *hdev)
 355 {
 356         int error;
 357
 358         __set_bit(EV_KEY, input->evbit);
 359
 360         if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE) {
 361                 __set_bit(BTN_LEFT, input->keybit);
 362                 __set_bit(BTN_RIGHT, input->keybit);
 363                 if (emulate_3button)
 364                         __set_bit(BTN_MIDDLE, input->keybit);
 365
 366                 __set_bit(EV_REL, input->evbit);
 367                 __set_bit(REL_X, input->relbit);
 368                 __set_bit(REL_Y, input->relbit);
 369                 if (emulate_scroll_wheel) {
 370                         __set_bit(REL_WHEEL, input->relbit);
 371                         __set_bit(REL_HWHEEL, input->relbit);
 372                 }
 373         } else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
 374                 /* input->keybit is initialized with incorrect button info
 375                  * for Magic Trackpad. There really is only one physical
 376                  * button (BTN_LEFT == BTN_MOUSE). Make sure we don't
 377                  * advertise buttons that don't exist...
 378                  */
 379                 __clear_bit(BTN_RIGHT, input->keybit);
 380                 __clear_bit(BTN_MIDDLE, input->keybit);
 381                 __set_bit(BTN_MOUSE, input->keybit);
 382                 __set_bit(BTN_TOOL_FINGER, input->keybit);
 383                 __set_bit(BTN_TOOL_DOUBLETAP, input->keybit);
 384                 __set_bit(BTN_TOOL_TRIPLETAP, input->keybit);
 385                 __set_bit(BTN_TOOL_QUADTAP, input->keybit);
 386                 __set_bit(BTN_TOOL_QUINTTAP, input->keybit);
 387                 __set_bit(BTN_TOUCH, input->keybit);
 388                 __set_bit(INPUT_PROP_POINTER, input->propbit);
 389                 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
 390         }
 391
 392
 393         __set_bit(EV_ABS, input->evbit);
 394
 395         error = input_mt_init_slots(input, 16, 0);
 396         if (error)
 397                 return error;
 398         input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, 255 << 2,
 399                              4, 0);
 400         input_set_abs_params(input, ABS_MT_TOUCH_MINOR, 0, 255 << 2,
 401                              4, 0);
 402         input_set_abs_params(input, ABS_MT_ORIENTATION, -31, 32, 1, 0);
 403
 404         /* Note: Touch Y position from the device is inverted relative
 405          * to how pointer motion is reported (and relative to how USB
 406          * HID recommends the coordinates work).  This driver keeps
 407          * the origin at the same position, and just uses the additive
 408          * inverse of the reported Y.
 409          */
 410         if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE) {
 411                 input_set_abs_params(input, ABS_MT_POSITION_X,
 412                                      MOUSE_MIN_X, MOUSE_MAX_X, 4, 0);
 413                 input_set_abs_params(input, ABS_MT_POSITION_Y,
 414                                      MOUSE_MIN_Y, MOUSE_MAX_Y, 4, 0);
 415
 416                 input_abs_set_res(input, ABS_MT_POSITION_X,
 417                                   MOUSE_RES_X);
 418                 input_abs_set_res(input, ABS_MT_POSITION_Y,
 419                                   MOUSE_RES_Y);
 420         } else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
 421                 input_set_abs_params(input, ABS_X, TRACKPAD_MIN_X,
 422                                      TRACKPAD_MAX_X, 4, 0);
 423                 input_set_abs_params(input, ABS_Y, TRACKPAD_MIN_Y,
 424                                      TRACKPAD_MAX_Y, 4, 0);
 425                 input_set_abs_params(input, ABS_MT_POSITION_X,
 426                                      TRACKPAD_MIN_X, TRACKPAD_MAX_X, 4, 0);
 427                 input_set_abs_params(input, ABS_MT_POSITION_Y,
 428                                      TRACKPAD_MIN_Y, TRACKPAD_MAX_Y, 4, 0);
 429
 430                 input_abs_set_res(input, ABS_X, TRACKPAD_RES_X);
 431                 input_abs_set_res(input, ABS_Y, TRACKPAD_RES_Y);
 432                 input_abs_set_res(input, ABS_MT_POSITION_X,
 433                                   TRACKPAD_RES_X);
 434                 input_abs_set_res(input, ABS_MT_POSITION_Y,
 435                                   TRACKPAD_RES_Y);
 436         }
 437
 438         input_set_events_per_packet(input, 60);
 439
 440         if (report_undeciphered) {
 441                 __set_bit(EV_MSC, input->evbit);
 442                 __set_bit(MSC_RAW, input->mscbit);
 443         }
 444
 445         return 0;
 446 }
 447
 448 static int magicmouse_input_mapping(struct hid_device *hdev,
 449                 struct hid_input *hi, struct hid_field *field,
 450                 struct hid_usage *usage, unsigned long **bit, int *max)
 451 {
 452         struct magicmouse_sc *msc = hid_get_drvdata(hdev);
 453
 454         if (!msc->input)
 455                 msc->input = hi->input;
 456
 457         /* Magic Trackpad does not give relative data after switching to MT */
 458         if (hi->input->id.product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD &&
 459             field->flags & HID_MAIN_ITEM_RELATIVE)
 460                 return -1;
 461
 462         return 0;
 463 }
 464
 465 static void magicmouse_input_configured(struct hid_device *hdev,
 466                 struct hid_input *hi)
 467
 468 {
 469         struct magicmouse_sc *msc = hid_get_drvdata(hdev);
 470
 471         int ret = magicmouse_setup_input(msc->input, hdev);
 472         if (ret) {
 473                 hid_err(hdev, "magicmouse setup input failed (%d)\n", ret);
 474                 /* clean msc->input to notify probe() of the failure */
 475                 msc->input = NULL;
 476         }
 477 }
 478
 479
 480 static int magicmouse_probe(struct hid_device *hdev,
 481         const struct hid_device_id *id)
 482 {
 483         __u8 feature[] = { 0xd7, 0x01 };
 484         struct magicmouse_sc *msc;
 485         struct hid_report *report;
 486         int ret;
 487
 488         msc = kzalloc(sizeof(*msc), GFP_KERNEL);
 489         if (msc == NULL) {
 490                 hid_err(hdev, "can't alloc magicmouse descriptor\n");
 491                 return -ENOMEM;
 492         }
 493
 494         msc->scroll_accel = SCROLL_ACCEL_DEFAULT;
 495
 496         msc->quirks = id->driver_data;
 497         hid_set_drvdata(hdev, msc);
 498
 499         ret = hid_parse(hdev);
 500         if (ret) {
 501                 hid_err(hdev, "magicmouse hid parse failed\n");
 502                 goto err_free;
 503         }
 504
 505         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 506         if (ret) {
 507                 hid_err(hdev, "magicmouse hw start failed\n");
 508                 goto err_free;
 509         }
 510
 511         if (!msc->input) {
 512                 hid_err(hdev, "magicmouse input not registered\n");
 513                 ret = -ENOMEM;
 514                 goto err_stop_hw;
 515         }
 516
 517         if (id->product == USB_DEVICE_ID_APPLE_MAGICMOUSE)
 518                 report = hid_register_report(hdev, HID_INPUT_REPORT,
 519                         MOUSE_REPORT_ID);
 520         else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
 521                 report = hid_register_report(hdev, HID_INPUT_REPORT,
 522                         TRACKPAD_REPORT_ID);
 523                 report = hid_register_report(hdev, HID_INPUT_REPORT,
 524                         DOUBLE_REPORT_ID);
 525         }
 526
 527         if (!report) {
 528                 hid_err(hdev, "unable to register touch report\n");
 529                 ret = -ENOMEM;
 530                 goto err_stop_hw;
 531         }
 532         report->size = 6;
 533
 534         /*
 535          * Some devices repond with 'invalid report id' when feature
 536          * report switching it into multitouch mode is sent to it.
 537          *
 538          * This results in -EIO from the _raw low-level transport callback,
 539          * but there seems to be no other way of switching the mode.
 540          * Thus the super-ugly hacky success check below.
 541          */
 542         ret = hdev->hid_output_raw_report(hdev, feature, sizeof(feature),
 543                         HID_FEATURE_REPORT);
 544         if (ret != -EIO && ret != sizeof(feature)) {
 545                 hid_err(hdev, "unable to request touch data (%d)\n", ret);
 546                 goto err_stop_hw;
 547         }
 548
 549         return 0;
 550 err_stop_hw:
 551         hid_hw_stop(hdev);
 552 err_free:
 553         kfree(msc);
 554         return ret;
 555 }
 556
 557 static void magicmouse_remove(struct hid_device *hdev)
 558 {
 559         struct magicmouse_sc *msc = hid_get_drvdata(hdev);
 560
 561         hid_hw_stop(hdev);
 562         kfree(msc);
 563 }
 564
 565 static const struct hid_device_id magic_mice[] = {
 566         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
 567                 USB_DEVICE_ID_APPLE_MAGICMOUSE), .driver_data = 0 },
 568         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
 569                 USB_DEVICE_ID_APPLE_MAGICTRACKPAD), .driver_data = 0 },
 570         { }
 571 };
 572 MODULE_DEVICE_TABLE(hid, magic_mice);
 573
 574 static struct hid_driver magicmouse_driver = {
 575         .name = "magicmouse",
 576         .id_table = magic_mice,
 577         .probe = magicmouse_probe,
 578         .remove = magicmouse_remove,
 579         .raw_event = magicmouse_raw_event,
 580         .input_mapping = magicmouse_input_mapping,
 581         .input_configured = magicmouse_input_configured,
 582 };
 583 module_hid_driver(magicmouse_driver);
 584
 585 MODULE_LICENSE("GPL");