drivers/hid/hid-apple.c

   1 /*
   2  *  USB HID quirks support for Linux
   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) 2007 Paul Walmsley
   9  *  Copyright (c) 2008 Jiri Slaby <jirislaby@gmail.com>
  10  */
  11
  12 /*
  13  * This program is free software; you can redistribute it and/or modify it
  14  * under the terms of the GNU General Public License as published by the Free
  15  * Software Foundation; either version 2 of the License, or (at your option)
  16  * any later version.
  17  */
  18
  19 #include <linux/device.h>
  20 #include <linux/hid.h>
  21 #include <linux/module.h>
  22 #include <linux/usb.h>
  23
  24 #include "hid-ids.h"
  25
  26 #define APPLE_RDESC_JIS         0x0001
  27 #define APPLE_IGNORE_MOUSE      0x0002
  28 #define APPLE_HAS_FN            0x0004
  29 #define APPLE_HIDDEV            0x0008
  30 #define APPLE_ISO_KEYBOARD      0x0010
  31 #define APPLE_MIGHTYMOUSE       0x0020
  32 #define APPLE_INVERT_HWHEEL     0x0040
  33 #define APPLE_IGNORE_HIDINPUT   0x0080
  34 #define APPLE_NUMLOCK_EMULATION 0x0100
  35
  36 #define APPLE_FLAG_FKEY         0x01
  37
  38 static unsigned int fnmode = 1;
  39 module_param(fnmode, uint, 0644);
  40 MODULE_PARM_DESC(fnmode, "Mode of fn key on Apple keyboards (0 = disabled, "
  41                 "[1] = fkeyslast, 2 = fkeysfirst)");
  42
  43 struct apple_sc {
  44         unsigned long quirks;
  45         unsigned int fn_on;
  46         DECLARE_BITMAP(pressed_fn, KEY_CNT);
  47         DECLARE_BITMAP(pressed_numlock, KEY_CNT);
  48 };
  49
  50 struct apple_key_translation {
  51         u16 from;
  52         u16 to;
  53         u8 flags;
  54 };
  55
  56 static struct apple_key_translation apple_fn_keys[] = {
  57         { KEY_BACKSPACE, KEY_DELETE },
  58         { KEY_ENTER,    KEY_INSERT },
  59         { KEY_F1,       KEY_BRIGHTNESSDOWN, APPLE_FLAG_FKEY },
  60         { KEY_F2,       KEY_BRIGHTNESSUP,   APPLE_FLAG_FKEY },
  61         { KEY_F3,       KEY_SCALE,          APPLE_FLAG_FKEY },
  62         { KEY_F4,       KEY_DASHBOARD,      APPLE_FLAG_FKEY },
  63         { KEY_F5,       KEY_KBDILLUMDOWN,   APPLE_FLAG_FKEY },
  64         { KEY_F6,       KEY_KBDILLUMUP,     APPLE_FLAG_FKEY },
  65         { KEY_F7,       KEY_PREVIOUSSONG,   APPLE_FLAG_FKEY },
  66         { KEY_F8,       KEY_PLAYPAUSE,      APPLE_FLAG_FKEY },
  67         { KEY_F9,       KEY_NEXTSONG,       APPLE_FLAG_FKEY },
  68         { KEY_F10,      KEY_MUTE,           APPLE_FLAG_FKEY },
  69         { KEY_F11,      KEY_VOLUMEDOWN,     APPLE_FLAG_FKEY },
  70         { KEY_F12,      KEY_VOLUMEUP,       APPLE_FLAG_FKEY },
  71         { KEY_UP,       KEY_PAGEUP },
  72         { KEY_DOWN,     KEY_PAGEDOWN },
  73         { KEY_LEFT,     KEY_HOME },
  74         { KEY_RIGHT,    KEY_END },
  75         { }
  76 };
  77
  78 static struct apple_key_translation powerbook_fn_keys[] = {
  79         { KEY_BACKSPACE, KEY_DELETE },
  80         { KEY_F1,       KEY_BRIGHTNESSDOWN,     APPLE_FLAG_FKEY },
  81         { KEY_F2,       KEY_BRIGHTNESSUP,       APPLE_FLAG_FKEY },
  82         { KEY_F3,       KEY_MUTE,               APPLE_FLAG_FKEY },
  83         { KEY_F4,       KEY_VOLUMEDOWN,         APPLE_FLAG_FKEY },
  84         { KEY_F5,       KEY_VOLUMEUP,           APPLE_FLAG_FKEY },
  85         { KEY_F6,       KEY_NUMLOCK,            APPLE_FLAG_FKEY },
  86         { KEY_F7,       KEY_SWITCHVIDEOMODE,    APPLE_FLAG_FKEY },
  87         { KEY_F8,       KEY_KBDILLUMTOGGLE,     APPLE_FLAG_FKEY },
  88         { KEY_F9,       KEY_KBDILLUMDOWN,       APPLE_FLAG_FKEY },
  89         { KEY_F10,      KEY_KBDILLUMUP,         APPLE_FLAG_FKEY },
  90         { KEY_UP,       KEY_PAGEUP },
  91         { KEY_DOWN,     KEY_PAGEDOWN },
  92         { KEY_LEFT,     KEY_HOME },
  93         { KEY_RIGHT,    KEY_END },
  94         { }
  95 };
  96
  97 static struct apple_key_translation powerbook_numlock_keys[] = {
  98         { KEY_J,        KEY_KP1 },
  99         { KEY_K,        KEY_KP2 },
 100         { KEY_L,        KEY_KP3 },
 101         { KEY_U,        KEY_KP4 },
 102         { KEY_I,        KEY_KP5 },
 103         { KEY_O,        KEY_KP6 },
 104         { KEY_7,        KEY_KP7 },
 105         { KEY_8,        KEY_KP8 },
 106         { KEY_9,        KEY_KP9 },
 107         { KEY_M,        KEY_KP0 },
 108         { KEY_DOT,      KEY_KPDOT },
 109         { KEY_SLASH,    KEY_KPPLUS },
 110         { KEY_SEMICOLON, KEY_KPMINUS },
 111         { KEY_P,        KEY_KPASTERISK },
 112         { KEY_MINUS,    KEY_KPEQUAL },
 113         { KEY_0,        KEY_KPSLASH },
 114         { KEY_F6,       KEY_NUMLOCK },
 115         { KEY_KPENTER,  KEY_KPENTER },
 116         { KEY_BACKSPACE, KEY_BACKSPACE },
 117         { }
 118 };
 119
 120 static struct apple_key_translation apple_iso_keyboard[] = {
 121         { KEY_GRAVE,    KEY_102ND },
 122         { KEY_102ND,    KEY_GRAVE },
 123         { }
 124 };
 125
 126 static struct apple_key_translation *apple_find_translation(
 127                 struct apple_key_translation *table, u16 from)
 128 {
 129         struct apple_key_translation *trans;
 130
 131         /* Look for the translation */
 132         for (trans = table; trans->from; trans++)
 133                 if (trans->from == from)
 134                         return trans;
 135
 136         return NULL;
 137 }
 138
 139 static int hidinput_apple_event(struct hid_device *hid, struct input_dev *input,
 140                 struct hid_usage *usage, __s32 value)
 141 {
 142         struct apple_sc *asc = hid_get_drvdata(hid);
 143         struct apple_key_translation *trans;
 144
 145         if (usage->code == KEY_FN) {
 146                 asc->fn_on = !!value;
 147                 input_event(input, usage->type, usage->code, value);
 148                 return 1;
 149         }
 150
 151         if (fnmode) {
 152                 int do_translate;
 153
 154                 trans = apple_find_translation((hid->product < 0x220 ||
 155                                         hid->product >= 0x300) ?
 156                                         powerbook_fn_keys : apple_fn_keys,
 157                                         usage->code);
 158                 if (trans) {
 159                         if (test_bit(usage->code, asc->pressed_fn))
 160                                 do_translate = 1;
 161                         else if (trans->flags & APPLE_FLAG_FKEY)
 162                                 do_translate = (fnmode == 2 && asc->fn_on) ||
 163                                         (fnmode == 1 && !asc->fn_on);
 164                         else
 165                                 do_translate = asc->fn_on;
 166
 167                         if (do_translate) {
 168                                 if (value)
 169                                         set_bit(usage->code, asc->pressed_fn);
 170                                 else
 171                                         clear_bit(usage->code, asc->pressed_fn);
 172
 173                                 input_event(input, usage->type, trans->to,
 174                                                 value);
 175
 176                                 return 1;
 177                         }
 178                 }
 179
 180                 if (asc->quirks & APPLE_NUMLOCK_EMULATION &&
 181                                 (test_bit(usage->code, asc->pressed_numlock) ||
 182                                 test_bit(LED_NUML, input->led))) {
 183                         trans = apple_find_translation(powerbook_numlock_keys,
 184                                         usage->code);
 185
 186                         if (trans) {
 187                                 if (value)
 188                                         set_bit(usage->code,
 189                                                         asc->pressed_numlock);
 190                                 else
 191                                         clear_bit(usage->code,
 192                                                         asc->pressed_numlock);
 193
 194                                 input_event(input, usage->type, trans->to,
 195                                                 value);
 196                         }
 197
 198                         return 1;
 199                 }
 200         }
 201
 202         if (asc->quirks & APPLE_ISO_KEYBOARD) {
 203                 trans = apple_find_translation(apple_iso_keyboard, usage->code);
 204                 if (trans) {
 205                         input_event(input, usage->type, trans->to, value);
 206                         return 1;
 207                 }
 208         }
 209
 210         return 0;
 211 }
 212
 213 static int apple_event(struct hid_device *hdev, struct hid_field *field,
 214                 struct hid_usage *usage, __s32 value)
 215 {
 216         struct apple_sc *asc = hid_get_drvdata(hdev);
 217
 218         if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput ||
 219                         !usage->type)
 220                 return 0;
 221
 222         if ((asc->quirks & APPLE_INVERT_HWHEEL) &&
 223                         usage->code == REL_HWHEEL) {
 224                 input_event(field->hidinput->input, usage->type, usage->code,
 225                                 -value);
 226                 return 1;
 227         }
 228
 229         if ((asc->quirks & APPLE_HAS_FN) &&
 230                         hidinput_apple_event(hdev, field->hidinput->input,
 231                                 usage, value))
 232                 return 1;
 233
 234
 235         return 0;
 236 }
 237
 238 /*
 239  * MacBook JIS keyboard has wrong logical maximum
 240  */
 241 static void apple_report_fixup(struct hid_device *hdev, __u8 *rdesc,
 242                 unsigned int rsize)
 243 {
 244         struct apple_sc *asc = hid_get_drvdata(hdev);
 245
 246         if ((asc->quirks & APPLE_RDESC_JIS) && rsize >= 60 &&
 247                         rdesc[53] == 0x65 && rdesc[59] == 0x65) {
 248                 dev_info(&hdev->dev, "fixing up MacBook JIS keyboard report "
 249                                 "descriptor\n");
 250                 rdesc[53] = rdesc[59] = 0xe7;
 251         }
 252 }
 253
 254 static void apple_setup_input(struct input_dev *input)
 255 {
 256         struct apple_key_translation *trans;
 257
 258         set_bit(KEY_NUMLOCK, input->keybit);
 259
 260         /* Enable all needed keys */
 261         for (trans = apple_fn_keys; trans->from; trans++)
 262                 set_bit(trans->to, input->keybit);
 263
 264         for (trans = powerbook_fn_keys; trans->from; trans++)
 265                 set_bit(trans->to, input->keybit);
 266
 267         for (trans = powerbook_numlock_keys; trans->from; trans++)
 268                 set_bit(trans->to, input->keybit);
 269
 270         for (trans = apple_iso_keyboard; trans->from; trans++)
 271                 set_bit(trans->to, input->keybit);
 272 }
 273
 274 static int apple_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 275                 struct hid_field *field, struct hid_usage *usage,
 276                 unsigned long **bit, int *max)
 277 {
 278         if (usage->hid == (HID_UP_CUSTOM | 0x0003)) {
 279                 /* The fn key on Apple USB keyboards */
 280                 set_bit(EV_REP, hi->input->evbit);
 281                 hid_map_usage_clear(hi, usage, bit, max, EV_KEY, KEY_FN);
 282                 apple_setup_input(hi->input);
 283                 return 1;
 284         }
 285
 286         /* we want the hid layer to go through standard path (set and ignore) */
 287         return 0;
 288 }
 289
 290 static int apple_input_mapped(struct hid_device *hdev, struct hid_input *hi,
 291                 struct hid_field *field, struct hid_usage *usage,
 292                 unsigned long **bit, int *max)
 293 {
 294         struct apple_sc *asc = hid_get_drvdata(hdev);
 295
 296         if (asc->quirks & APPLE_MIGHTYMOUSE) {
 297                 if (usage->hid == HID_GD_Z)
 298                         hid_map_usage(hi, usage, bit, max, EV_REL, REL_HWHEEL);
 299                 else if (usage->code == BTN_1)
 300                         hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_2);
 301                 else if (usage->code == BTN_2)
 302                         hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_1);
 303         }
 304
 305         return 0;
 306 }
 307
 308 static int apple_probe(struct hid_device *hdev,
 309                 const struct hid_device_id *id)
 310 {
 311         unsigned long quirks = id->driver_data;
 312         struct apple_sc *asc;
 313         unsigned int connect_mask = HID_CONNECT_DEFAULT;
 314         int ret;
 315
 316         asc = kzalloc(sizeof(*asc), GFP_KERNEL);
 317         if (asc == NULL) {
 318                 dev_err(&hdev->dev, "can't alloc apple descriptor\n");
 319                 return -ENOMEM;
 320         }
 321
 322         asc->quirks = quirks;
 323
 324         hid_set_drvdata(hdev, asc);
 325
 326         ret = hid_parse(hdev);
 327         if (ret) {
 328                 dev_err(&hdev->dev, "parse failed\n");
 329                 goto err_free;
 330         }
 331
 332         if (quirks & APPLE_HIDDEV)
 333                 connect_mask |= HID_CONNECT_HIDDEV_FORCE;
 334         if (quirks & APPLE_IGNORE_HIDINPUT)
 335                 connect_mask &= ~HID_CONNECT_HIDINPUT;
 336
 337         ret = hid_hw_start(hdev, connect_mask);
 338         if (ret) {
 339                 dev_err(&hdev->dev, "hw start failed\n");
 340                 goto err_free;
 341         }
 342
 343         return 0;
 344 err_free:
 345         kfree(asc);
 346         return ret;
 347 }
 348
 349 static void apple_remove(struct hid_device *hdev)
 350 {
 351         hid_hw_stop(hdev);
 352         kfree(hid_get_drvdata(hdev));
 353 }
 354
 355 static const struct hid_device_id apple_devices[] = {
 356         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ATV_IRCONTROL),
 357                 .driver_data = APPLE_HIDDEV | APPLE_IGNORE_HIDINPUT },
 358         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4),
 359                 .driver_data = APPLE_HIDDEV | APPLE_IGNORE_HIDINPUT },
 360         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE),
 361                 .driver_data = APPLE_MIGHTYMOUSE | APPLE_INVERT_HWHEEL },
 362
 363         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI),
 364                 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
 365         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO),
 366                 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
 367         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI),
 368                 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
 369         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO),
 370                 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
 371                         APPLE_ISO_KEYBOARD },
 372         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS),
 373                 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
 374         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI),
 375                 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
 376         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO),
 377                 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
 378                         APPLE_ISO_KEYBOARD },
 379         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS),
 380                 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
 381                         APPLE_RDESC_JIS },
 382         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI),
 383                 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
 384         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO),
 385                 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
 386                         APPLE_ISO_KEYBOARD },
 387         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS),
 388                 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
 389                         APPLE_RDESC_JIS },
 390         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI),
 391                 .driver_data = APPLE_HAS_FN },
 392         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO),
 393                 .driver_data = APPLE_HAS_FN | APPLE_ISO_KEYBOARD },
 394         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS),
 395                 .driver_data = APPLE_HAS_FN },
 396         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI),
 397                 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
 398         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO),
 399                 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
 400         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS),
 401                 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
 402                         APPLE_RDESC_JIS },
 403         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI),
 404                 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
 405         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO),
 406                 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
 407                         APPLE_ISO_KEYBOARD },
 408         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS),
 409                 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
 410         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI),
 411                 .driver_data = APPLE_HAS_FN },
 412         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO),
 413                 .driver_data = APPLE_HAS_FN | APPLE_ISO_KEYBOARD },
 414         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS),
 415                 .driver_data = APPLE_HAS_FN | APPLE_RDESC_JIS },
 416         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI),
 417                 .driver_data = APPLE_HAS_FN },
 418         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO),
 419                 .driver_data = APPLE_HAS_FN | APPLE_ISO_KEYBOARD },
 420         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS),
 421                 .driver_data = APPLE_HAS_FN | APPLE_RDESC_JIS },
 422         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI),
 423                 .driver_data = APPLE_HAS_FN },
 424         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO),
 425                 .driver_data = APPLE_HAS_FN | APPLE_ISO_KEYBOARD },
 426         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS),
 427                 .driver_data = APPLE_HAS_FN | APPLE_RDESC_JIS },
 428         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY),
 429                 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
 430         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY),
 431                 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
 432
 433         /* Apple wireless Mighty Mouse */
 434         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 0x030c),
 435                 .driver_data = APPLE_MIGHTYMOUSE | APPLE_INVERT_HWHEEL },
 436
 437         { }
 438 };
 439 MODULE_DEVICE_TABLE(hid, apple_devices);
 440
 441 static struct hid_driver apple_driver = {
 442         .name = "apple",
 443         .id_table = apple_devices,
 444         .report_fixup = apple_report_fixup,
 445         .probe = apple_probe,
 446         .remove = apple_remove,
 447         .event = apple_event,
 448         .input_mapping = apple_input_mapping,
 449         .input_mapped = apple_input_mapped,
 450 };
 451
 452 static int apple_init(void)
 453 {
 454         int ret;
 455
 456         ret = hid_register_driver(&apple_driver);
 457         if (ret)
 458                 printk(KERN_ERR "can't register apple driver\n");
 459
 460         return ret;
 461 }
 462
 463 static void apple_exit(void)
 464 {
 465         hid_unregister_driver(&apple_driver);
 466 }
 467
 468 module_init(apple_init);
 469 module_exit(apple_exit);
 470 MODULE_LICENSE("GPL");
 471
 472 HID_COMPAT_LOAD_DRIVER(apple);