Merge branch 'next' into for-linus
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / 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 static unsigned int iso_layout = 1;
44 module_param(iso_layout, uint, 0644);
45 MODULE_PARM_DESC(iso_layout, "Enable/Disable hardcoded ISO-layout of the keyboard. "
46 "(0 = disabled, [1] = enabled)");
47
48 struct apple_sc {
49 unsigned long quirks;
50 unsigned int fn_on;
51 DECLARE_BITMAP(pressed_fn, KEY_CNT);
52 DECLARE_BITMAP(pressed_numlock, KEY_CNT);
53 };
54
55 struct apple_key_translation {
56 u16 from;
57 u16 to;
58 u8 flags;
59 };
60
61 static const struct apple_key_translation apple_fn_keys[] = {
62 { KEY_BACKSPACE, KEY_DELETE },
63 { KEY_ENTER, KEY_INSERT },
64 { KEY_F1, KEY_BRIGHTNESSDOWN, APPLE_FLAG_FKEY },
65 { KEY_F2, KEY_BRIGHTNESSUP, APPLE_FLAG_FKEY },
66 { KEY_F3, KEY_SCALE, APPLE_FLAG_FKEY },
67 { KEY_F4, KEY_DASHBOARD, APPLE_FLAG_FKEY },
68 { KEY_F5, KEY_KBDILLUMDOWN, APPLE_FLAG_FKEY },
69 { KEY_F6, KEY_KBDILLUMUP, APPLE_FLAG_FKEY },
70 { KEY_F7, KEY_PREVIOUSSONG, APPLE_FLAG_FKEY },
71 { KEY_F8, KEY_PLAYPAUSE, APPLE_FLAG_FKEY },
72 { KEY_F9, KEY_NEXTSONG, APPLE_FLAG_FKEY },
73 { KEY_F10, KEY_MUTE, APPLE_FLAG_FKEY },
74 { KEY_F11, KEY_VOLUMEDOWN, APPLE_FLAG_FKEY },
75 { KEY_F12, KEY_VOLUMEUP, APPLE_FLAG_FKEY },
76 { KEY_UP, KEY_PAGEUP },
77 { KEY_DOWN, KEY_PAGEDOWN },
78 { KEY_LEFT, KEY_HOME },
79 { KEY_RIGHT, KEY_END },
80 { }
81 };
82
83 static const struct apple_key_translation powerbook_fn_keys[] = {
84 { KEY_BACKSPACE, KEY_DELETE },
85 { KEY_F1, KEY_BRIGHTNESSDOWN, APPLE_FLAG_FKEY },
86 { KEY_F2, KEY_BRIGHTNESSUP, APPLE_FLAG_FKEY },
87 { KEY_F3, KEY_MUTE, APPLE_FLAG_FKEY },
88 { KEY_F4, KEY_VOLUMEDOWN, APPLE_FLAG_FKEY },
89 { KEY_F5, KEY_VOLUMEUP, APPLE_FLAG_FKEY },
90 { KEY_F6, KEY_NUMLOCK, APPLE_FLAG_FKEY },
91 { KEY_F7, KEY_SWITCHVIDEOMODE, APPLE_FLAG_FKEY },
92 { KEY_F8, KEY_KBDILLUMTOGGLE, APPLE_FLAG_FKEY },
93 { KEY_F9, KEY_KBDILLUMDOWN, APPLE_FLAG_FKEY },
94 { KEY_F10, KEY_KBDILLUMUP, APPLE_FLAG_FKEY },
95 { KEY_UP, KEY_PAGEUP },
96 { KEY_DOWN, KEY_PAGEDOWN },
97 { KEY_LEFT, KEY_HOME },
98 { KEY_RIGHT, KEY_END },
99 { }
100 };
101
102 static const struct apple_key_translation powerbook_numlock_keys[] = {
103 { KEY_J, KEY_KP1 },
104 { KEY_K, KEY_KP2 },
105 { KEY_L, KEY_KP3 },
106 { KEY_U, KEY_KP4 },
107 { KEY_I, KEY_KP5 },
108 { KEY_O, KEY_KP6 },
109 { KEY_7, KEY_KP7 },
110 { KEY_8, KEY_KP8 },
111 { KEY_9, KEY_KP9 },
112 { KEY_M, KEY_KP0 },
113 { KEY_DOT, KEY_KPDOT },
114 { KEY_SLASH, KEY_KPPLUS },
115 { KEY_SEMICOLON, KEY_KPMINUS },
116 { KEY_P, KEY_KPASTERISK },
117 { KEY_MINUS, KEY_KPEQUAL },
118 { KEY_0, KEY_KPSLASH },
119 { KEY_F6, KEY_NUMLOCK },
120 { KEY_KPENTER, KEY_KPENTER },
121 { KEY_BACKSPACE, KEY_BACKSPACE },
122 { }
123 };
124
125 static const struct apple_key_translation apple_iso_keyboard[] = {
126 { KEY_GRAVE, KEY_102ND },
127 { KEY_102ND, KEY_GRAVE },
128 { }
129 };
130
131 static const struct apple_key_translation *apple_find_translation(
132 const struct apple_key_translation *table, u16 from)
133 {
134 const struct apple_key_translation *trans;
135
136 /* Look for the translation */
137 for (trans = table; trans->from; trans++)
138 if (trans->from == from)
139 return trans;
140
141 return NULL;
142 }
143
144 static int hidinput_apple_event(struct hid_device *hid, struct input_dev *input,
145 struct hid_usage *usage, __s32 value)
146 {
147 struct apple_sc *asc = hid_get_drvdata(hid);
148 const struct apple_key_translation *trans;
149
150 if (usage->code == KEY_FN) {
151 asc->fn_on = !!value;
152 input_event(input, usage->type, usage->code, value);
153 return 1;
154 }
155
156 if (fnmode) {
157 int do_translate;
158
159 trans = apple_find_translation((hid->product < 0x21d ||
160 hid->product >= 0x300) ?
161 powerbook_fn_keys : apple_fn_keys,
162 usage->code);
163 if (trans) {
164 if (test_bit(usage->code, asc->pressed_fn))
165 do_translate = 1;
166 else if (trans->flags & APPLE_FLAG_FKEY)
167 do_translate = (fnmode == 2 && asc->fn_on) ||
168 (fnmode == 1 && !asc->fn_on);
169 else
170 do_translate = asc->fn_on;
171
172 if (do_translate) {
173 if (value)
174 set_bit(usage->code, asc->pressed_fn);
175 else
176 clear_bit(usage->code, asc->pressed_fn);
177
178 input_event(input, usage->type, trans->to,
179 value);
180
181 return 1;
182 }
183 }
184
185 if (asc->quirks & APPLE_NUMLOCK_EMULATION &&
186 (test_bit(usage->code, asc->pressed_numlock) ||
187 test_bit(LED_NUML, input->led))) {
188 trans = apple_find_translation(powerbook_numlock_keys,
189 usage->code);
190
191 if (trans) {
192 if (value)
193 set_bit(usage->code,
194 asc->pressed_numlock);
195 else
196 clear_bit(usage->code,
197 asc->pressed_numlock);
198
199 input_event(input, usage->type, trans->to,
200 value);
201 }
202
203 return 1;
204 }
205 }
206
207 if (iso_layout) {
208 if (asc->quirks & APPLE_ISO_KEYBOARD) {
209 trans = apple_find_translation(apple_iso_keyboard, usage->code);
210 if (trans) {
211 input_event(input, usage->type, trans->to, value);
212 return 1;
213 }
214 }
215 }
216
217 return 0;
218 }
219
220 static int apple_event(struct hid_device *hdev, struct hid_field *field,
221 struct hid_usage *usage, __s32 value)
222 {
223 struct apple_sc *asc = hid_get_drvdata(hdev);
224
225 if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput ||
226 !usage->type)
227 return 0;
228
229 if ((asc->quirks & APPLE_INVERT_HWHEEL) &&
230 usage->code == REL_HWHEEL) {
231 input_event(field->hidinput->input, usage->type, usage->code,
232 -value);
233 return 1;
234 }
235
236 if ((asc->quirks & APPLE_HAS_FN) &&
237 hidinput_apple_event(hdev, field->hidinput->input,
238 usage, value))
239 return 1;
240
241
242 return 0;
243 }
244
245 /*
246 * MacBook JIS keyboard has wrong logical maximum
247 */
248 static void apple_report_fixup(struct hid_device *hdev, __u8 *rdesc,
249 unsigned int rsize)
250 {
251 struct apple_sc *asc = hid_get_drvdata(hdev);
252
253 if ((asc->quirks & APPLE_RDESC_JIS) && rsize >= 60 &&
254 rdesc[53] == 0x65 && rdesc[59] == 0x65) {
255 dev_info(&hdev->dev, "fixing up MacBook JIS keyboard report "
256 "descriptor\n");
257 rdesc[53] = rdesc[59] = 0xe7;
258 }
259 }
260
261 static void apple_setup_input(struct input_dev *input)
262 {
263 const struct apple_key_translation *trans;
264
265 set_bit(KEY_NUMLOCK, input->keybit);
266
267 /* Enable all needed keys */
268 for (trans = apple_fn_keys; trans->from; trans++)
269 set_bit(trans->to, input->keybit);
270
271 for (trans = powerbook_fn_keys; trans->from; trans++)
272 set_bit(trans->to, input->keybit);
273
274 for (trans = powerbook_numlock_keys; trans->from; trans++)
275 set_bit(trans->to, input->keybit);
276
277 for (trans = apple_iso_keyboard; trans->from; trans++)
278 set_bit(trans->to, input->keybit);
279 }
280
281 static int apple_input_mapping(struct hid_device *hdev, struct hid_input *hi,
282 struct hid_field *field, struct hid_usage *usage,
283 unsigned long **bit, int *max)
284 {
285 if (usage->hid == (HID_UP_CUSTOM | 0x0003)) {
286 /* The fn key on Apple USB keyboards */
287 set_bit(EV_REP, hi->input->evbit);
288 hid_map_usage_clear(hi, usage, bit, max, EV_KEY, KEY_FN);
289 apple_setup_input(hi->input);
290 return 1;
291 }
292
293 /* we want the hid layer to go through standard path (set and ignore) */
294 return 0;
295 }
296
297 static int apple_input_mapped(struct hid_device *hdev, struct hid_input *hi,
298 struct hid_field *field, struct hid_usage *usage,
299 unsigned long **bit, int *max)
300 {
301 struct apple_sc *asc = hid_get_drvdata(hdev);
302
303 if (asc->quirks & APPLE_MIGHTYMOUSE) {
304 if (usage->hid == HID_GD_Z)
305 hid_map_usage(hi, usage, bit, max, EV_REL, REL_HWHEEL);
306 else if (usage->code == BTN_1)
307 hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_2);
308 else if (usage->code == BTN_2)
309 hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_1);
310 }
311
312 return 0;
313 }
314
315 static int apple_probe(struct hid_device *hdev,
316 const struct hid_device_id *id)
317 {
318 unsigned long quirks = id->driver_data;
319 struct apple_sc *asc;
320 unsigned int connect_mask = HID_CONNECT_DEFAULT;
321 int ret;
322
323 asc = kzalloc(sizeof(*asc), GFP_KERNEL);
324 if (asc == NULL) {
325 dev_err(&hdev->dev, "can't alloc apple descriptor\n");
326 return -ENOMEM;
327 }
328
329 asc->quirks = quirks;
330
331 hid_set_drvdata(hdev, asc);
332
333 ret = hid_parse(hdev);
334 if (ret) {
335 dev_err(&hdev->dev, "parse failed\n");
336 goto err_free;
337 }
338
339 if (quirks & APPLE_HIDDEV)
340 connect_mask |= HID_CONNECT_HIDDEV_FORCE;
341 if (quirks & APPLE_IGNORE_HIDINPUT)
342 connect_mask &= ~HID_CONNECT_HIDINPUT;
343
344 ret = hid_hw_start(hdev, connect_mask);
345 if (ret) {
346 dev_err(&hdev->dev, "hw start failed\n");
347 goto err_free;
348 }
349
350 return 0;
351 err_free:
352 kfree(asc);
353 return ret;
354 }
355
356 static void apple_remove(struct hid_device *hdev)
357 {
358 hid_hw_stop(hdev);
359 kfree(hid_get_drvdata(hdev));
360 }
361
362 static const struct hid_device_id apple_devices[] = {
363 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ATV_IRCONTROL),
364 .driver_data = APPLE_HIDDEV | APPLE_IGNORE_HIDINPUT },
365 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4),
366 .driver_data = APPLE_HIDDEV | APPLE_IGNORE_HIDINPUT },
367 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE),
368 .driver_data = APPLE_MIGHTYMOUSE | APPLE_INVERT_HWHEEL },
369
370 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI),
371 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
372 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO),
373 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
374 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI),
375 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
376 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_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_GEYSER_JIS),
380 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
381 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI),
382 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
383 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO),
384 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
385 APPLE_ISO_KEYBOARD },
386 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS),
387 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
388 APPLE_RDESC_JIS },
389 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI),
390 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
391 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO),
392 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
393 APPLE_ISO_KEYBOARD },
394 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS),
395 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
396 APPLE_RDESC_JIS },
397 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI),
398 .driver_data = APPLE_HAS_FN },
399 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO),
400 .driver_data = APPLE_HAS_FN | APPLE_ISO_KEYBOARD },
401 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS),
402 .driver_data = APPLE_HAS_FN },
403 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI),
404 .driver_data = APPLE_HAS_FN },
405 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO),
406 .driver_data = APPLE_HAS_FN | APPLE_ISO_KEYBOARD },
407 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS),
408 .driver_data = APPLE_HAS_FN },
409 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI),
410 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
411 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO),
412 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
413 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS),
414 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
415 APPLE_RDESC_JIS },
416 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI),
417 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
418 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO),
419 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
420 APPLE_ISO_KEYBOARD },
421 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS),
422 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
423 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI),
424 .driver_data = APPLE_HAS_FN },
425 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO),
426 .driver_data = APPLE_HAS_FN | APPLE_ISO_KEYBOARD },
427 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS),
428 .driver_data = APPLE_HAS_FN | APPLE_RDESC_JIS },
429 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI),
430 .driver_data = APPLE_HAS_FN },
431 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO),
432 .driver_data = APPLE_HAS_FN | APPLE_ISO_KEYBOARD },
433 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS),
434 .driver_data = APPLE_HAS_FN | APPLE_RDESC_JIS },
435 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI),
436 .driver_data = APPLE_HAS_FN },
437 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO),
438 .driver_data = APPLE_HAS_FN | APPLE_ISO_KEYBOARD },
439 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS),
440 .driver_data = APPLE_HAS_FN | APPLE_RDESC_JIS },
441 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI),
442 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
443 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO),
444 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
445 APPLE_ISO_KEYBOARD },
446 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS),
447 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
448 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY),
449 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
450 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY),
451 .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
452
453 { }
454 };
455 MODULE_DEVICE_TABLE(hid, apple_devices);
456
457 static struct hid_driver apple_driver = {
458 .name = "apple",
459 .id_table = apple_devices,
460 .report_fixup = apple_report_fixup,
461 .probe = apple_probe,
462 .remove = apple_remove,
463 .event = apple_event,
464 .input_mapping = apple_input_mapping,
465 .input_mapped = apple_input_mapped,
466 };
467
468 static int __init apple_init(void)
469 {
470 int ret;
471
472 ret = hid_register_driver(&apple_driver);
473 if (ret)
474 printk(KERN_ERR "can't register apple driver\n");
475
476 return ret;
477 }
478
479 static void __exit apple_exit(void)
480 {
481 hid_unregister_driver(&apple_driver);
482 }
483
484 module_init(apple_init);
485 module_exit(apple_exit);
486 MODULE_LICENSE("GPL");