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Linux-2.6.12-rc2
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / macintosh / adbhid.c
blob8f93d01d89283da9b83229a69aa4298079a08a5d
1 /*
2 * drivers/input/adbhid.c
3 *
4 * ADB HID driver for Power Macintosh computers.
5 *
6 * Adapted from drivers/macintosh/mac_keyb.c by Franz Sirl.
7 * drivers/macintosh/mac_keyb.c was Copyright (C) 1996 Paul Mackerras
8 * with considerable contributions from Ben Herrenschmidt and others.
9 *
10 * Copyright (C) 2000 Franz Sirl.
11 *
12 * Adapted to ADB changes and support for more devices by
13 * Benjamin Herrenschmidt. Adapted from code in MkLinux
14 * and reworked.
15 *
16 * Supported devices:
17 *
18 * - Standard 1 button mouse
19 * - All standard Apple Extended protocol (handler ID 4)
20 * - mouseman and trackman mice & trackballs
21 * - PowerBook Trackpad (default setup: enable tapping)
22 * - MicroSpeed mouse & trackball (needs testing)
23 * - CH Products Trackball Pro (needs testing)
24 * - Contour Design (Contour Mouse)
25 * - Hunter digital (NoHandsMouse)
26 * - Kensignton TurboMouse 5 (needs testing)
27 * - Mouse Systems A3 mice and trackballs <aidan@kublai.com>
28 * - MacAlly 2-buttons mouse (needs testing) <pochini@denise.shiny.it>
29 *
30 * To do:
31 *
32 * Improve Kensington support.
33 * Split mouse/kbd
34 * Move to syfs
35 */
36
37 #include <linux/config.h>
38 #include <linux/module.h>
39 #include <linux/slab.h>
40 #include <linux/init.h>
41 #include <linux/notifier.h>
42 #include <linux/input.h>
43
44 #include <linux/adb.h>
45 #include <linux/cuda.h>
46 #include <linux/pmu.h>
47
48 #include <asm/machdep.h>
49 #ifdef CONFIG_PPC_PMAC
50 #include <asm/pmac_feature.h>
51 #endif
52
53 #ifdef CONFIG_PMAC_BACKLIGHT
54 #include <asm/backlight.h>
55 #endif
56
57 MODULE_AUTHOR("Franz Sirl <Franz.Sirl-kernel@lauterbach.com>");
58
59 #define KEYB_KEYREG 0 /* register # for key up/down data */
60 #define KEYB_LEDREG 2 /* register # for leds on ADB keyboard */
61 #define MOUSE_DATAREG 0 /* reg# for movement/button codes from mouse */
62
63 static int adb_message_handler(struct notifier_block *, unsigned long, void *);
64 static struct notifier_block adbhid_adb_notifier = {
65 .notifier_call = adb_message_handler,
66 };
67
68 /* Some special keys */
69 #define ADB_KEY_DEL 0x33
70 #define ADB_KEY_CMD 0x37
71 #define ADB_KEY_CAPSLOCK 0x39
72 #define ADB_KEY_FN 0x3f
73 #define ADB_KEY_FWDEL 0x75
74 #define ADB_KEY_POWER_OLD 0x7e
75 #define ADB_KEY_POWER 0x7f
76
77 u8 adb_to_linux_keycodes[128] = {
78 /* 0x00 */ KEY_A, /* 30 */
79 /* 0x01 */ KEY_S, /* 31 */
80 /* 0x02 */ KEY_D, /* 32 */
81 /* 0x03 */ KEY_F, /* 33 */
82 /* 0x04 */ KEY_H, /* 35 */
83 /* 0x05 */ KEY_G, /* 34 */
84 /* 0x06 */ KEY_Z, /* 44 */
85 /* 0x07 */ KEY_X, /* 45 */
86 /* 0x08 */ KEY_C, /* 46 */
87 /* 0x09 */ KEY_V, /* 47 */
88 /* 0x0a */ KEY_102ND, /* 86 */
89 /* 0x0b */ KEY_B, /* 48 */
90 /* 0x0c */ KEY_Q, /* 16 */
91 /* 0x0d */ KEY_W, /* 17 */
92 /* 0x0e */ KEY_E, /* 18 */
93 /* 0x0f */ KEY_R, /* 19 */
94 /* 0x10 */ KEY_Y, /* 21 */
95 /* 0x11 */ KEY_T, /* 20 */
96 /* 0x12 */ KEY_1, /* 2 */
97 /* 0x13 */ KEY_2, /* 3 */
98 /* 0x14 */ KEY_3, /* 4 */
99 /* 0x15 */ KEY_4, /* 5 */
100 /* 0x16 */ KEY_6, /* 7 */
101 /* 0x17 */ KEY_5, /* 6 */
102 /* 0x18 */ KEY_EQUAL, /* 13 */
103 /* 0x19 */ KEY_9, /* 10 */
104 /* 0x1a */ KEY_7, /* 8 */
105 /* 0x1b */ KEY_MINUS, /* 12 */
106 /* 0x1c */ KEY_8, /* 9 */
107 /* 0x1d */ KEY_0, /* 11 */
108 /* 0x1e */ KEY_RIGHTBRACE, /* 27 */
109 /* 0x1f */ KEY_O, /* 24 */
110 /* 0x20 */ KEY_U, /* 22 */
111 /* 0x21 */ KEY_LEFTBRACE, /* 26 */
112 /* 0x22 */ KEY_I, /* 23 */
113 /* 0x23 */ KEY_P, /* 25 */
114 /* 0x24 */ KEY_ENTER, /* 28 */
115 /* 0x25 */ KEY_L, /* 38 */
116 /* 0x26 */ KEY_J, /* 36 */
117 /* 0x27 */ KEY_APOSTROPHE, /* 40 */
118 /* 0x28 */ KEY_K, /* 37 */
119 /* 0x29 */ KEY_SEMICOLON, /* 39 */
120 /* 0x2a */ KEY_BACKSLASH, /* 43 */
121 /* 0x2b */ KEY_COMMA, /* 51 */
122 /* 0x2c */ KEY_SLASH, /* 53 */
123 /* 0x2d */ KEY_N, /* 49 */
124 /* 0x2e */ KEY_M, /* 50 */
125 /* 0x2f */ KEY_DOT, /* 52 */
126 /* 0x30 */ KEY_TAB, /* 15 */
127 /* 0x31 */ KEY_SPACE, /* 57 */
128 /* 0x32 */ KEY_GRAVE, /* 41 */
129 /* 0x33 */ KEY_BACKSPACE, /* 14 */
130 /* 0x34 */ KEY_KPENTER, /* 96 */
131 /* 0x35 */ KEY_ESC, /* 1 */
132 /* 0x36 */ KEY_LEFTCTRL, /* 29 */
133 /* 0x37 */ KEY_LEFTMETA, /* 125 */
134 /* 0x38 */ KEY_LEFTSHIFT, /* 42 */
135 /* 0x39 */ KEY_CAPSLOCK, /* 58 */
136 /* 0x3a */ KEY_LEFTALT, /* 56 */
137 /* 0x3b */ KEY_LEFT, /* 105 */
138 /* 0x3c */ KEY_RIGHT, /* 106 */
139 /* 0x3d */ KEY_DOWN, /* 108 */
140 /* 0x3e */ KEY_UP, /* 103 */
141 /* 0x3f */ 0,
142 /* 0x40 */ 0,
143 /* 0x41 */ KEY_KPDOT, /* 83 */
144 /* 0x42 */ 0,
145 /* 0x43 */ KEY_KPASTERISK, /* 55 */
146 /* 0x44 */ 0,
147 /* 0x45 */ KEY_KPPLUS, /* 78 */
148 /* 0x46 */ 0,
149 /* 0x47 */ KEY_NUMLOCK, /* 69 */
150 /* 0x48 */ 0,
151 /* 0x49 */ 0,
152 /* 0x4a */ 0,
153 /* 0x4b */ KEY_KPSLASH, /* 98 */
154 /* 0x4c */ KEY_KPENTER, /* 96 */
155 /* 0x4d */ 0,
156 /* 0x4e */ KEY_KPMINUS, /* 74 */
157 /* 0x4f */ 0,
158 /* 0x50 */ 0,
159 /* 0x51 */ KEY_KPEQUAL, /* 117 */
160 /* 0x52 */ KEY_KP0, /* 82 */
161 /* 0x53 */ KEY_KP1, /* 79 */
162 /* 0x54 */ KEY_KP2, /* 80 */
163 /* 0x55 */ KEY_KP3, /* 81 */
164 /* 0x56 */ KEY_KP4, /* 75 */
165 /* 0x57 */ KEY_KP5, /* 76 */
166 /* 0x58 */ KEY_KP6, /* 77 */
167 /* 0x59 */ KEY_KP7, /* 71 */
168 /* 0x5a */ 0,
169 /* 0x5b */ KEY_KP8, /* 72 */
170 /* 0x5c */ KEY_KP9, /* 73 */
171 /* 0x5d */ KEY_YEN, /* 124 */
172 /* 0x5e */ KEY_RO, /* 89 */
173 /* 0x5f */ KEY_KPCOMMA, /* 121 */
174 /* 0x60 */ KEY_F5, /* 63 */
175 /* 0x61 */ KEY_F6, /* 64 */
176 /* 0x62 */ KEY_F7, /* 65 */
177 /* 0x63 */ KEY_F3, /* 61 */
178 /* 0x64 */ KEY_F8, /* 66 */
179 /* 0x65 */ KEY_F9, /* 67 */
180 /* 0x66 */ KEY_HANJA, /* 123 */
181 /* 0x67 */ KEY_F11, /* 87 */
182 /* 0x68 */ KEY_HANGUEL, /* 122 */
183 /* 0x69 */ KEY_SYSRQ, /* 99 */
184 /* 0x6a */ 0,
185 /* 0x6b */ KEY_SCROLLLOCK, /* 70 */
186 /* 0x6c */ 0,
187 /* 0x6d */ KEY_F10, /* 68 */
188 /* 0x6e */ KEY_COMPOSE, /* 127 */
189 /* 0x6f */ KEY_F12, /* 88 */
190 /* 0x70 */ 0,
191 /* 0x71 */ KEY_PAUSE, /* 119 */
192 /* 0x72 */ KEY_INSERT, /* 110 */
193 /* 0x73 */ KEY_HOME, /* 102 */
194 /* 0x74 */ KEY_PAGEUP, /* 104 */
195 /* 0x75 */ KEY_DELETE, /* 111 */
196 /* 0x76 */ KEY_F4, /* 62 */
197 /* 0x77 */ KEY_END, /* 107 */
198 /* 0x78 */ KEY_F2, /* 60 */
199 /* 0x79 */ KEY_PAGEDOWN, /* 109 */
200 /* 0x7a */ KEY_F1, /* 59 */
201 /* 0x7b */ KEY_RIGHTSHIFT, /* 54 */
202 /* 0x7c */ KEY_RIGHTALT, /* 100 */
203 /* 0x7d */ KEY_RIGHTCTRL, /* 97 */
204 /* 0x7e */ KEY_RIGHTMETA, /* 126 */
205 /* 0x7f */ KEY_POWER, /* 116 */
206 };
207
208 struct adbhid {
209 struct input_dev input;
210 int id;
211 int default_id;
212 int original_handler_id;
213 int current_handler_id;
214 int mouse_kind;
215 unsigned char *keycode;
216 char name[64];
217 char phys[32];
218 int flags;
219 };
220
221 #define FLAG_FN_KEY_PRESSED 0x00000001
222 #define FLAG_POWER_FROM_FN 0x00000002
223 #define FLAG_EMU_FWDEL_DOWN 0x00000004
224
225 static struct adbhid *adbhid[16];
226
227 static void adbhid_probe(void);
228
229 static void adbhid_input_keycode(int, int, int, struct pt_regs *);
230
231 static void init_trackpad(int id);
232 static void init_trackball(int id);
233 static void init_turbomouse(int id);
234 static void init_microspeed(int id);
235 static void init_ms_a3(int id);
236
237 static struct adb_ids keyboard_ids;
238 static struct adb_ids mouse_ids;
239 static struct adb_ids buttons_ids;
240
241 #ifdef CONFIG_PMAC_BACKLIGHT
242 /* Exported to via-pmu.c */
243 int disable_kernel_backlight = 0;
244 #endif /* CONFIG_PMAC_BACKLIGHT */
245
246 /* Kind of keyboard, see Apple technote 1152 */
247 #define ADB_KEYBOARD_UNKNOWN 0
248 #define ADB_KEYBOARD_ANSI 0x0100
249 #define ADB_KEYBOARD_ISO 0x0200
250 #define ADB_KEYBOARD_JIS 0x0300
251
252 /* Kind of mouse */
253 #define ADBMOUSE_STANDARD_100 0 /* Standard 100cpi mouse (handler 1) */
254 #define ADBMOUSE_STANDARD_200 1 /* Standard 200cpi mouse (handler 2) */
255 #define ADBMOUSE_EXTENDED 2 /* Apple Extended mouse (handler 4) */
256 #define ADBMOUSE_TRACKBALL 3 /* TrackBall (handler 4) */
257 #define ADBMOUSE_TRACKPAD 4 /* Apple's PowerBook trackpad (handler 4) */
258 #define ADBMOUSE_TURBOMOUSE5 5 /* Turbomouse 5 (previously req. mousehack) */
259 #define ADBMOUSE_MICROSPEED 6 /* Microspeed mouse (&trackball ?), MacPoint */
260 #define ADBMOUSE_TRACKBALLPRO 7 /* Trackball Pro (special buttons) */
261 #define ADBMOUSE_MS_A3 8 /* Mouse systems A3 trackball (handler 3) */
262 #define ADBMOUSE_MACALLY2 9 /* MacAlly 2-button mouse */
263
264 static void
265 adbhid_keyboard_input(unsigned char *data, int nb, struct pt_regs *regs, int apoll)
266 {
267 int id = (data[0] >> 4) & 0x0f;
268
269 if (!adbhid[id]) {
270 printk(KERN_ERR "ADB HID on ID %d not yet registered, packet %#02x, %#02x, %#02x, %#02x\n",
271 id, data[0], data[1], data[2], data[3]);
272 return;
273 }
274
275 /* first check this is from register 0 */
276 if (nb != 3 || (data[0] & 3) != KEYB_KEYREG)
277 return; /* ignore it */
278 adbhid_input_keycode(id, data[1], 0, regs);
279 if (!(data[2] == 0xff || (data[2] == 0x7f && data[1] == 0x7f)))
280 adbhid_input_keycode(id, data[2], 0, regs);
281 }
282
283 static void
284 adbhid_input_keycode(int id, int keycode, int repeat, struct pt_regs *regs)
285 {
286 struct adbhid *ahid = adbhid[id];
287 int up_flag;
288
289 up_flag = (keycode & 0x80);
290 keycode &= 0x7f;
291
292 switch (keycode) {
293 case ADB_KEY_CAPSLOCK: /* Generate down/up events for CapsLock everytime. */
294 input_regs(&ahid->input, regs);
295 input_report_key(&ahid->input, KEY_CAPSLOCK, 1);
296 input_report_key(&ahid->input, KEY_CAPSLOCK, 0);
297 input_sync(&ahid->input);
298 return;
299 #ifdef CONFIG_PPC_PMAC
300 case ADB_KEY_POWER_OLD: /* Power key on PBook 3400 needs remapping */
301 switch(pmac_call_feature(PMAC_FTR_GET_MB_INFO,
302 NULL, PMAC_MB_INFO_MODEL, 0)) {
303 case PMAC_TYPE_COMET:
304 case PMAC_TYPE_HOOPER:
305 case PMAC_TYPE_KANGA:
306 keycode = ADB_KEY_POWER;
307 }
308 break;
309 case ADB_KEY_POWER:
310 /* Fn + Command will produce a bogus "power" keycode */
311 if (ahid->flags & FLAG_FN_KEY_PRESSED) {
312 keycode = ADB_KEY_CMD;
313 if (up_flag)
314 ahid->flags &= ~FLAG_POWER_FROM_FN;
315 else
316 ahid->flags |= FLAG_POWER_FROM_FN;
317 } else if (ahid->flags & FLAG_POWER_FROM_FN) {
318 keycode = ADB_KEY_CMD;
319 ahid->flags &= ~FLAG_POWER_FROM_FN;
320 }
321 break;
322 case ADB_KEY_FN:
323 /* Keep track of the Fn key state */
324 if (up_flag) {
325 ahid->flags &= ~FLAG_FN_KEY_PRESSED;
326 /* Emulate Fn+delete = forward delete */
327 if (ahid->flags & FLAG_EMU_FWDEL_DOWN) {
328 ahid->flags &= ~FLAG_EMU_FWDEL_DOWN;
329 keycode = ADB_KEY_FWDEL;
330 break;
331 }
332 } else
333 ahid->flags |= FLAG_FN_KEY_PRESSED;
334 /* Swallow the key press */
335 return;
336 case ADB_KEY_DEL:
337 /* Emulate Fn+delete = forward delete */
338 if (ahid->flags & FLAG_FN_KEY_PRESSED) {
339 keycode = ADB_KEY_FWDEL;
340 if (up_flag)
341 ahid->flags &= ~FLAG_EMU_FWDEL_DOWN;
342 else
343 ahid->flags |= FLAG_EMU_FWDEL_DOWN;
344 }
345 break;
346 #endif /* CONFIG_PPC_PMAC */
347 }
348
349 if (adbhid[id]->keycode[keycode]) {
350 input_regs(&adbhid[id]->input, regs);
351 input_report_key(&adbhid[id]->input,
352 adbhid[id]->keycode[keycode], !up_flag);
353 input_sync(&adbhid[id]->input);
354 } else
355 printk(KERN_INFO "Unhandled ADB key (scancode %#02x) %s.\n", keycode,
356 up_flag ? "released" : "pressed");
357
358 }
359
360 static void
361 adbhid_mouse_input(unsigned char *data, int nb, struct pt_regs *regs, int autopoll)
362 {
363 int id = (data[0] >> 4) & 0x0f;
364
365 if (!adbhid[id]) {
366 printk(KERN_ERR "ADB HID on ID %d not yet registered\n", id);
367 return;
368 }
369
370 /*
371 Handler 1 -- 100cpi original Apple mouse protocol.
372 Handler 2 -- 200cpi original Apple mouse protocol.
373
374 For Apple's standard one-button mouse protocol the data array will
375 contain the following values:
376
377 BITS COMMENTS
378 data[0] = dddd 1100 ADB command: Talk, register 0, for device dddd.
379 data[1] = bxxx xxxx First button and x-axis motion.
380 data[2] = byyy yyyy Second button and y-axis motion.
381
382 Handler 4 -- Apple Extended mouse protocol.
383
384 For Apple's 3-button mouse protocol the data array will contain the
385 following values:
386
387 BITS COMMENTS
388 data[0] = dddd 1100 ADB command: Talk, register 0, for device dddd.
389 data[1] = bxxx xxxx Left button and x-axis motion.
390 data[2] = byyy yyyy Second button and y-axis motion.
391 data[3] = byyy bxxx Third button and fourth button. Y is additional
392 high bits of y-axis motion. XY is additional
393 high bits of x-axis motion.
394
395 MacAlly 2-button mouse protocol.
396
397 For MacAlly 2-button mouse protocol the data array will contain the
398 following values:
399
400 BITS COMMENTS
401 data[0] = dddd 1100 ADB command: Talk, register 0, for device dddd.
402 data[1] = bxxx xxxx Left button and x-axis motion.
403 data[2] = byyy yyyy Right button and y-axis motion.
404 data[3] = ???? ???? unknown
405 data[4] = ???? ???? unknown
406
407 */
408
409 /* If it's a trackpad, we alias the second button to the first.
410 NOTE: Apple sends an ADB flush command to the trackpad when
411 the first (the real) button is released. We could do
412 this here using async flush requests.
413 */
414 switch (adbhid[id]->mouse_kind)
415 {
416 case ADBMOUSE_TRACKPAD:
417 data[1] = (data[1] & 0x7f) | ((data[1] & data[2]) & 0x80);
418 data[2] = data[2] | 0x80;
419 break;
420 case ADBMOUSE_MICROSPEED:
421 data[1] = (data[1] & 0x7f) | ((data[3] & 0x01) << 7);
422 data[2] = (data[2] & 0x7f) | ((data[3] & 0x02) << 6);
423 data[3] = (data[3] & 0x77) | ((data[3] & 0x04) << 5)
424 | (data[3] & 0x08);
425 break;
426 case ADBMOUSE_TRACKBALLPRO:
427 data[1] = (data[1] & 0x7f) | (((data[3] & 0x04) << 5)
428 & ((data[3] & 0x08) << 4));
429 data[2] = (data[2] & 0x7f) | ((data[3] & 0x01) << 7);
430 data[3] = (data[3] & 0x77) | ((data[3] & 0x02) << 6);
431 break;
432 case ADBMOUSE_MS_A3:
433 data[1] = (data[1] & 0x7f) | ((data[3] & 0x01) << 7);
434 data[2] = (data[2] & 0x7f) | ((data[3] & 0x02) << 6);
435 data[3] = ((data[3] & 0x04) << 5);
436 break;
437 case ADBMOUSE_MACALLY2:
438 data[3] = (data[2] & 0x80) ? 0x80 : 0x00;
439 data[2] |= 0x80; /* Right button is mapped as button 3 */
440 nb=4;
441 break;
442 }
443
444 input_regs(&adbhid[id]->input, regs);
445
446 input_report_key(&adbhid[id]->input, BTN_LEFT, !((data[1] >> 7) & 1));
447 input_report_key(&adbhid[id]->input, BTN_MIDDLE, !((data[2] >> 7) & 1));
448
449 if (nb >= 4 && adbhid[id]->mouse_kind != ADBMOUSE_TRACKPAD)
450 input_report_key(&adbhid[id]->input, BTN_RIGHT, !((data[3] >> 7) & 1));
451
452 input_report_rel(&adbhid[id]->input, REL_X,
453 ((data[2]&0x7f) < 64 ? (data[2]&0x7f) : (data[2]&0x7f)-128 ));
454 input_report_rel(&adbhid[id]->input, REL_Y,
455 ((data[1]&0x7f) < 64 ? (data[1]&0x7f) : (data[1]&0x7f)-128 ));
456
457 input_sync(&adbhid[id]->input);
458 }
459
460 static void
461 adbhid_buttons_input(unsigned char *data, int nb, struct pt_regs *regs, int autopoll)
462 {
463 int id = (data[0] >> 4) & 0x0f;
464
465 if (!adbhid[id]) {
466 printk(KERN_ERR "ADB HID on ID %d not yet registered\n", id);
467 return;
468 }
469
470 input_regs(&adbhid[id]->input, regs);
471
472 switch (adbhid[id]->original_handler_id) {
473 default:
474 case 0x02: /* Adjustable keyboard button device */
475 {
476 int down = (data[1] == (data[1] & 0xf));
477
478 switch (data[1] & 0x0f) {
479 case 0x0: /* microphone */
480 input_report_key(&adbhid[id]->input, KEY_SOUND, down);
481 break;
482
483 case 0x1: /* mute */
484 input_report_key(&adbhid[id]->input, KEY_MUTE, down);
485 break;
486
487 case 0x2: /* volume decrease */
488 input_report_key(&adbhid[id]->input, KEY_VOLUMEDOWN, down);
489 break;
490
491 case 0x3: /* volume increase */
492 input_report_key(&adbhid[id]->input, KEY_VOLUMEUP, down);
493 break;
494
495 default:
496 printk(KERN_INFO "Unhandled ADB_MISC event %02x, %02x, %02x, %02x\n",
497 data[0], data[1], data[2], data[3]);
498 break;
499 }
500 }
501 break;
502
503 case 0x1f: /* Powerbook button device */
504 {
505 int down = (data[1] == (data[1] & 0xf));
506 #ifdef CONFIG_PMAC_BACKLIGHT
507 int backlight = get_backlight_level();
508 #endif
509 /*
510 * XXX: Where is the contrast control for the passive?
511 * -- Cort
512 */
513
514 switch (data[1] & 0x0f) {
515 case 0x8: /* mute */
516 input_report_key(&adbhid[id]->input, KEY_MUTE, down);
517 break;
518
519 case 0x7: /* volume decrease */
520 input_report_key(&adbhid[id]->input, KEY_VOLUMEDOWN, down);
521 break;
522
523 case 0x6: /* volume increase */
524 input_report_key(&adbhid[id]->input, KEY_VOLUMEUP, down);
525 break;
526
527 case 0xb: /* eject */
528 input_report_key(&adbhid[id]->input, KEY_EJECTCD, down);
529 break;
530
531 case 0xa: /* brightness decrease */
532 #ifdef CONFIG_PMAC_BACKLIGHT
533 if (!disable_kernel_backlight) {
534 if (down && backlight >= 0) {
535 if (backlight > BACKLIGHT_OFF)
536 set_backlight_level(backlight-1);
537 else
538 set_backlight_level(BACKLIGHT_OFF);
539 }
540 }
541 #endif /* CONFIG_PMAC_BACKLIGHT */
542 input_report_key(&adbhid[id]->input, KEY_BRIGHTNESSDOWN, down);
543 break;
544
545 case 0x9: /* brightness increase */
546 #ifdef CONFIG_PMAC_BACKLIGHT
547 if (!disable_kernel_backlight) {
548 if (down && backlight >= 0) {
549 if (backlight < BACKLIGHT_MAX)
550 set_backlight_level(backlight+1);
551 else
552 set_backlight_level(BACKLIGHT_MAX);
553 }
554 }
555 #endif /* CONFIG_PMAC_BACKLIGHT */
556 input_report_key(&adbhid[id]->input, KEY_BRIGHTNESSUP, down);
557 break;
558 }
559 }
560 break;
561 }
562
563 input_sync(&adbhid[id]->input);
564 }
565
566 static struct adb_request led_request;
567 static int leds_pending[16];
568 static int leds_req_pending;
569 static int pending_devs[16];
570 static int pending_led_start=0;
571 static int pending_led_end=0;
572 static DEFINE_SPINLOCK(leds_lock);
573
574 static void leds_done(struct adb_request *req)
575 {
576 int leds = 0, device = 0, pending = 0;
577 unsigned long flags;
578
579 spin_lock_irqsave(&leds_lock, flags);
580
581 if (pending_led_start != pending_led_end) {
582 device = pending_devs[pending_led_start];
583 leds = leds_pending[device] & 0xff;
584 leds_pending[device] = 0;
585 pending_led_start++;
586 pending_led_start = (pending_led_start < 16) ? pending_led_start : 0;
587 pending = leds_req_pending;
588 } else
589 leds_req_pending = 0;
590 spin_unlock_irqrestore(&leds_lock, flags);
591 if (pending)
592 adb_request(&led_request, leds_done, 0, 3,
593 ADB_WRITEREG(device, KEYB_LEDREG), 0xff, ~leds);
594 }
595
596 static void real_leds(unsigned char leds, int device)
597 {
598 unsigned long flags;
599
600 spin_lock_irqsave(&leds_lock, flags);
601 if (!leds_req_pending) {
602 leds_req_pending = 1;
603 spin_unlock_irqrestore(&leds_lock, flags);
604 adb_request(&led_request, leds_done, 0, 3,
605 ADB_WRITEREG(device, KEYB_LEDREG), 0xff, ~leds);
606 return;
607 } else {
608 if (!(leds_pending[device] & 0x100)) {
609 pending_devs[pending_led_end] = device;
610 pending_led_end++;
611 pending_led_end = (pending_led_end < 16) ? pending_led_end : 0;
612 }
613 leds_pending[device] = leds | 0x100;
614 }
615 spin_unlock_irqrestore(&leds_lock, flags);
616 }
617
618 /*
619 * Event callback from the input module. Events that change the state of
620 * the hardware are processed here.
621 */
622 static int adbhid_kbd_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
623 {
624 struct adbhid *adbhid = dev->private;
625 unsigned char leds;
626
627 switch (type) {
628 case EV_LED:
629 leds = (test_bit(LED_SCROLLL, dev->led) ? 4 : 0)
630 | (test_bit(LED_NUML, dev->led) ? 1 : 0)
631 | (test_bit(LED_CAPSL, dev->led) ? 2 : 0);
632 real_leds(leds, adbhid->id);
633 return 0;
634 }
635
636 return -1;
637 }
638
639 static int
640 adb_message_handler(struct notifier_block *this, unsigned long code, void *x)
641 {
642 switch (code) {
643 case ADB_MSG_PRE_RESET:
644 case ADB_MSG_POWERDOWN:
645 /* Stop the repeat timer. Autopoll is already off at this point */
646 {
647 int i;
648 for (i = 1; i < 16; i++) {
649 if (adbhid[i])
650 del_timer_sync(&adbhid[i]->input.timer);
651 }
652 }
653
654 /* Stop pending led requests */
655 while(leds_req_pending)
656 adb_poll();
657 break;
658
659 case ADB_MSG_POST_RESET:
660 adbhid_probe();
661 break;
662 }
663 return NOTIFY_DONE;
664 }
665
666 static void
667 adbhid_input_register(int id, int default_id, int original_handler_id,
668 int current_handler_id, int mouse_kind)
669 {
670 int i;
671
672 if (adbhid[id]) {
673 printk(KERN_ERR "Trying to reregister ADB HID on ID %d\n", id);
674 return;
675 }
676
677 if (!(adbhid[id] = kmalloc(sizeof(struct adbhid), GFP_KERNEL)))
678 return;
679
680 memset(adbhid[id], 0, sizeof(struct adbhid));
681 sprintf(adbhid[id]->phys, "adb%d:%d.%02x/input", id, default_id, original_handler_id);
682
683 init_input_dev(&adbhid[id]->input);
684
685 adbhid[id]->id = default_id;
686 adbhid[id]->original_handler_id = original_handler_id;
687 adbhid[id]->current_handler_id = current_handler_id;
688 adbhid[id]->mouse_kind = mouse_kind;
689 adbhid[id]->flags = 0;
690 adbhid[id]->input.private = adbhid[id];
691 adbhid[id]->input.name = adbhid[id]->name;
692 adbhid[id]->input.phys = adbhid[id]->phys;
693 adbhid[id]->input.id.bustype = BUS_ADB;
694 adbhid[id]->input.id.vendor = 0x0001;
695 adbhid[id]->input.id.product = (id << 12) | (default_id << 8) | original_handler_id;
696 adbhid[id]->input.id.version = 0x0100;
697
698 switch (default_id) {
699 case ADB_KEYBOARD:
700 if (!(adbhid[id]->keycode = kmalloc(sizeof(adb_to_linux_keycodes), GFP_KERNEL))) {
701 kfree(adbhid[id]);
702 return;
703 }
704
705 sprintf(adbhid[id]->name, "ADB keyboard");
706
707 memcpy(adbhid[id]->keycode, adb_to_linux_keycodes, sizeof(adb_to_linux_keycodes));
708
709 printk(KERN_INFO "Detected ADB keyboard, type ");
710 switch (original_handler_id) {
711 default:
712 printk("<unknown>.\n");
713 adbhid[id]->input.id.version = ADB_KEYBOARD_UNKNOWN;
714 break;
715
716 case 0x01: case 0x02: case 0x03: case 0x06: case 0x08:
717 case 0x0C: case 0x10: case 0x18: case 0x1B: case 0x1C:
718 case 0xC0: case 0xC3: case 0xC6:
719 printk("ANSI.\n");
720 adbhid[id]->input.id.version = ADB_KEYBOARD_ANSI;
721 break;
722
723 case 0x04: case 0x05: case 0x07: case 0x09: case 0x0D:
724 case 0x11: case 0x14: case 0x19: case 0x1D: case 0xC1:
725 case 0xC4: case 0xC7:
726 printk("ISO, swapping keys.\n");
727 adbhid[id]->input.id.version = ADB_KEYBOARD_ISO;
728 i = adbhid[id]->keycode[10];
729 adbhid[id]->keycode[10] = adbhid[id]->keycode[50];
730 adbhid[id]->keycode[50] = i;
731 break;
732
733 case 0x12: case 0x15: case 0x16: case 0x17: case 0x1A:
734 case 0x1E: case 0xC2: case 0xC5: case 0xC8: case 0xC9:
735 printk("JIS.\n");
736 adbhid[id]->input.id.version = ADB_KEYBOARD_JIS;
737 break;
738 }
739
740 for (i = 0; i < 128; i++)
741 if (adbhid[id]->keycode[i])
742 set_bit(adbhid[id]->keycode[i], adbhid[id]->input.keybit);
743
744 adbhid[id]->input.evbit[0] = BIT(EV_KEY) | BIT(EV_LED) | BIT(EV_REP);
745 adbhid[id]->input.ledbit[0] = BIT(LED_SCROLLL) | BIT(LED_CAPSL) | BIT(LED_NUML);
746 adbhid[id]->input.event = adbhid_kbd_event;
747 adbhid[id]->input.keycodemax = 127;
748 adbhid[id]->input.keycodesize = 1;
749 break;
750
751 case ADB_MOUSE:
752 sprintf(adbhid[id]->name, "ADB mouse");
753
754 adbhid[id]->input.evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
755 adbhid[id]->input.keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
756 adbhid[id]->input.relbit[0] = BIT(REL_X) | BIT(REL_Y);
757 break;
758
759 case ADB_MISC:
760 switch (original_handler_id) {
761 case 0x02: /* Adjustable keyboard button device */
762 sprintf(adbhid[id]->name, "ADB adjustable keyboard buttons");
763 adbhid[id]->input.evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
764 set_bit(KEY_SOUND, adbhid[id]->input.keybit);
765 set_bit(KEY_MUTE, adbhid[id]->input.keybit);
766 set_bit(KEY_VOLUMEUP, adbhid[id]->input.keybit);
767 set_bit(KEY_VOLUMEDOWN, adbhid[id]->input.keybit);
768 break;
769 case 0x1f: /* Powerbook button device */
770 sprintf(adbhid[id]->name, "ADB Powerbook buttons");
771 adbhid[id]->input.evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
772 set_bit(KEY_MUTE, adbhid[id]->input.keybit);
773 set_bit(KEY_VOLUMEUP, adbhid[id]->input.keybit);
774 set_bit(KEY_VOLUMEDOWN, adbhid[id]->input.keybit);
775 set_bit(KEY_BRIGHTNESSUP, adbhid[id]->input.keybit);
776 set_bit(KEY_BRIGHTNESSDOWN, adbhid[id]->input.keybit);
777 set_bit(KEY_EJECTCD, adbhid[id]->input.keybit);
778 break;
779 }
780 if (adbhid[id]->name[0])
781 break;
782 /* else fall through */
783
784 default:
785 printk(KERN_INFO "Trying to register unknown ADB device to input layer.\n");
786 kfree(adbhid[id]);
787 return;
788 }
789
790 adbhid[id]->input.keycode = adbhid[id]->keycode;
791
792 input_register_device(&adbhid[id]->input);
793
794 printk(KERN_INFO "input: %s on %s\n",
795 adbhid[id]->name, adbhid[id]->phys);
796
797 if (default_id == ADB_KEYBOARD) {
798 /* HACK WARNING!! This should go away as soon there is an utility
799 * to control that for event devices.
800 */
801 adbhid[id]->input.rep[REP_DELAY] = 500; /* input layer default: 250 */
802 adbhid[id]->input.rep[REP_PERIOD] = 66; /* input layer default: 33 */
803 }
804 }
805
806 static void adbhid_input_unregister(int id)
807 {
808 input_unregister_device(&adbhid[id]->input);
809 if (adbhid[id]->keycode)
810 kfree(adbhid[id]->keycode);
811 kfree(adbhid[id]);
812 adbhid[id] = NULL;
813 }
814
815
816 static u16
817 adbhid_input_reregister(int id, int default_id, int org_handler_id,
818 int cur_handler_id, int mk)
819 {
820 if (adbhid[id]) {
821 if (adbhid[id]->input.id.product !=
822 ((id << 12)|(default_id << 8)|org_handler_id)) {
823 adbhid_input_unregister(id);
824 adbhid_input_register(id, default_id, org_handler_id,
825 cur_handler_id, mk);
826 }
827 } else
828 adbhid_input_register(id, default_id, org_handler_id,
829 cur_handler_id, mk);
830 return 1<<id;
831 }
832
833 static void
834 adbhid_input_devcleanup(u16 exist)
835 {
836 int i;
837 for(i=1; i<16; i++)
838 if (adbhid[i] && !(exist&(1<<i)))
839 adbhid_input_unregister(i);
840 }
841
842 static void
843 adbhid_probe(void)
844 {
845 struct adb_request req;
846 int i, default_id, org_handler_id, cur_handler_id;
847 u16 reg = 0;
848
849 adb_register(ADB_MOUSE, 0, &mouse_ids, adbhid_mouse_input);
850 adb_register(ADB_KEYBOARD, 0, &keyboard_ids, adbhid_keyboard_input);
851 adb_register(ADB_MISC, 0, &buttons_ids, adbhid_buttons_input);
852
853 for (i = 0; i < keyboard_ids.nids; i++) {
854 int id = keyboard_ids.id[i];
855
856 adb_get_infos(id, &default_id, &org_handler_id);
857
858 /* turn off all leds */
859 adb_request(&req, NULL, ADBREQ_SYNC, 3,
860 ADB_WRITEREG(id, KEYB_LEDREG), 0xff, 0xff);
861
862 /* Enable full feature set of the keyboard
863 ->get it to send separate codes for left and right shift,
864 control, option keys */
865 #if 0 /* handler 5 doesn't send separate codes for R modifiers */
866 if (adb_try_handler_change(id, 5))
867 printk("ADB keyboard at %d, handler set to 5\n", id);
868 else
869 #endif
870 if (adb_try_handler_change(id, 3))
871 printk("ADB keyboard at %d, handler set to 3\n", id);
872 else
873 printk("ADB keyboard at %d, handler 1\n", id);
874
875 adb_get_infos(id, &default_id, &cur_handler_id);
876 reg |= adbhid_input_reregister(id, default_id, org_handler_id,
877 cur_handler_id, 0);
878 }
879
880 for (i = 0; i < buttons_ids.nids; i++) {
881 int id = buttons_ids.id[i];
882
883 adb_get_infos(id, &default_id, &org_handler_id);
884 reg |= adbhid_input_reregister(id, default_id, org_handler_id,
885 org_handler_id, 0);
886 }
887
888 /* Try to switch all mice to handler 4, or 2 for three-button
889 mode and full resolution. */
890 for (i = 0; i < mouse_ids.nids; i++) {
891 int id = mouse_ids.id[i];
892 int mouse_kind;
893
894 adb_get_infos(id, &default_id, &org_handler_id);
895
896 if (adb_try_handler_change(id, 4)) {
897 printk("ADB mouse at %d, handler set to 4", id);
898 mouse_kind = ADBMOUSE_EXTENDED;
899 }
900 else if (adb_try_handler_change(id, 0x2F)) {
901 printk("ADB mouse at %d, handler set to 0x2F", id);
902 mouse_kind = ADBMOUSE_MICROSPEED;
903 }
904 else if (adb_try_handler_change(id, 0x42)) {
905 printk("ADB mouse at %d, handler set to 0x42", id);
906 mouse_kind = ADBMOUSE_TRACKBALLPRO;
907 }
908 else if (adb_try_handler_change(id, 0x66)) {
909 printk("ADB mouse at %d, handler set to 0x66", id);
910 mouse_kind = ADBMOUSE_MICROSPEED;
911 }
912 else if (adb_try_handler_change(id, 0x5F)) {
913 printk("ADB mouse at %d, handler set to 0x5F", id);
914 mouse_kind = ADBMOUSE_MICROSPEED;
915 }
916 else if (adb_try_handler_change(id, 3)) {
917 printk("ADB mouse at %d, handler set to 3", id);
918 mouse_kind = ADBMOUSE_MS_A3;
919 }
920 else if (adb_try_handler_change(id, 2)) {
921 printk("ADB mouse at %d, handler set to 2", id);
922 mouse_kind = ADBMOUSE_STANDARD_200;
923 }
924 else {
925 printk("ADB mouse at %d, handler 1", id);
926 mouse_kind = ADBMOUSE_STANDARD_100;
927 }
928
929 if ((mouse_kind == ADBMOUSE_TRACKBALLPRO)
930 || (mouse_kind == ADBMOUSE_MICROSPEED)) {
931 init_microspeed(id);
932 } else if (mouse_kind == ADBMOUSE_MS_A3) {
933 init_ms_a3(id);
934 } else if (mouse_kind == ADBMOUSE_EXTENDED) {
935 /*
936 * Register 1 is usually used for device
937 * identification. Here, we try to identify
938 * a known device and call the appropriate
939 * init function.
940 */
941 adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
942 ADB_READREG(id, 1));
943
944 if ((req.reply_len) &&
945 (req.reply[1] == 0x9a) && ((req.reply[2] == 0x21)
946 || (req.reply[2] == 0x20))) {
947 mouse_kind = ADBMOUSE_TRACKBALL;
948 init_trackball(id);
949 }
950 else if ((req.reply_len >= 4) &&
951 (req.reply[1] == 0x74) && (req.reply[2] == 0x70) &&
952 (req.reply[3] == 0x61) && (req.reply[4] == 0x64)) {
953 mouse_kind = ADBMOUSE_TRACKPAD;
954 init_trackpad(id);
955 }
956 else if ((req.reply_len >= 4) &&
957 (req.reply[1] == 0x4b) && (req.reply[2] == 0x4d) &&
958 (req.reply[3] == 0x4c) && (req.reply[4] == 0x31)) {
959 mouse_kind = ADBMOUSE_TURBOMOUSE5;
960 init_turbomouse(id);
961 }
962 else if ((req.reply_len == 9) &&
963 (req.reply[1] == 0x4b) && (req.reply[2] == 0x4f) &&
964 (req.reply[3] == 0x49) && (req.reply[4] == 0x54)) {
965 if (adb_try_handler_change(id, 0x42)) {
966 printk("\nADB MacAlly 2-button mouse at %d, handler set to 0x42", id);
967 mouse_kind = ADBMOUSE_MACALLY2;
968 }
969 }
970 }
971 printk("\n");
972
973 adb_get_infos(id, &default_id, &cur_handler_id);
974 reg |= adbhid_input_reregister(id, default_id, org_handler_id,
975 cur_handler_id, mouse_kind);
976 }
977 adbhid_input_devcleanup(reg);
978 }
979
980 static void
981 init_trackpad(int id)
982 {
983 struct adb_request req;
984 unsigned char r1_buffer[8];
985
986 printk(" (trackpad)");
987
988 adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
989 ADB_READREG(id,1));
990 if (req.reply_len < 8)
991 printk("bad length for reg. 1\n");
992 else
993 {
994 memcpy(r1_buffer, &req.reply[1], 8);
995
996 adb_request(&req, NULL, ADBREQ_SYNC, 9,
997 ADB_WRITEREG(id,1),
998 r1_buffer[0],
999 r1_buffer[1],
1000 r1_buffer[2],
1001 r1_buffer[3],
1002 r1_buffer[4],
1003 r1_buffer[5],
1004 0x0d,
1005 r1_buffer[7]);
1006
1007 adb_request(&req, NULL, ADBREQ_SYNC, 9,
1008 ADB_WRITEREG(id,2),
1009 0x99,
1010 0x94,
1011 0x19,
1012 0xff,
1013 0xb2,
1014 0x8a,
1015 0x1b,
1016 0x50);
1017
1018 adb_request(&req, NULL, ADBREQ_SYNC, 9,
1019 ADB_WRITEREG(id,1),
1020 r1_buffer[0],
1021 r1_buffer[1],
1022 r1_buffer[2],
1023 r1_buffer[3],
1024 r1_buffer[4],
1025 r1_buffer[5],
1026 0x03, /*r1_buffer[6],*/
1027 r1_buffer[7]);
1028
1029 /* Without this flush, the trackpad may be locked up */
1030 adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
1031 }
1032 }
1033
1034 static void
1035 init_trackball(int id)
1036 {
1037 struct adb_request req;
1038
1039 printk(" (trackman/mouseman)");
1040
1041 adb_request(&req, NULL, ADBREQ_SYNC, 3,
1042 ADB_WRITEREG(id,1), 00,0x81);
1043
1044 adb_request(&req, NULL, ADBREQ_SYNC, 3,
1045 ADB_WRITEREG(id,1), 01,0x81);
1046
1047 adb_request(&req, NULL, ADBREQ_SYNC, 3,
1048 ADB_WRITEREG(id,1), 02,0x81);
1049
1050 adb_request(&req, NULL, ADBREQ_SYNC, 3,
1051 ADB_WRITEREG(id,1), 03,0x38);
1052
1053 adb_request(&req, NULL, ADBREQ_SYNC, 3,
1054 ADB_WRITEREG(id,1), 00,0x81);
1055
1056 adb_request(&req, NULL, ADBREQ_SYNC, 3,
1057 ADB_WRITEREG(id,1), 01,0x81);
1058
1059 adb_request(&req, NULL, ADBREQ_SYNC, 3,
1060 ADB_WRITEREG(id,1), 02,0x81);
1061
1062 adb_request(&req, NULL, ADBREQ_SYNC, 3,
1063 ADB_WRITEREG(id,1), 03,0x38);
1064 }
1065
1066 static void
1067 init_turbomouse(int id)
1068 {
1069 struct adb_request req;
1070
1071 printk(" (TurboMouse 5)");
1072
1073 adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
1074
1075 adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(3));
1076
1077 adb_request(&req, NULL, ADBREQ_SYNC, 9,
1078 ADB_WRITEREG(3,2),
1079 0xe7,
1080 0x8c,
1081 0,
1082 0,
1083 0,
1084 0xff,
1085 0xff,
1086 0x94);
1087
1088 adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(3));
1089
1090 adb_request(&req, NULL, ADBREQ_SYNC, 9,
1091 ADB_WRITEREG(3,2),
1092 0xa5,
1093 0x14,
1094 0,
1095 0,
1096 0x69,
1097 0xff,
1098 0xff,
1099 0x27);
1100 }
1101
1102 static void
1103 init_microspeed(int id)
1104 {
1105 struct adb_request req;
1106
1107 printk(" (Microspeed/MacPoint or compatible)");
1108
1109 adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
1110
1111 /* This will initialize mice using the Microspeed, MacPoint and
1112 other compatible firmware. Bit 12 enables extended protocol.
1113
1114 Register 1 Listen (4 Bytes)
1115 0 - 3 Button is mouse (set also for double clicking!!!)
1116 4 - 7 Button is locking (affects change speed also)
1117 8 - 11 Button changes speed
1118 12 1 = Extended mouse mode, 0 = normal mouse mode
1119 13 - 15 unused 0
1120 16 - 23 normal speed
1121 24 - 31 changed speed
1122
1123 Register 1 talk holds version and product identification information.
1124 Register 1 Talk (4 Bytes):
1125 0 - 7 Product code
1126 8 - 23 undefined, reserved
1127 24 - 31 Version number
1128
1129 Speed 0 is max. 1 to 255 set speed in increments of 1/256 of max.
1130 */
1131 adb_request(&req, NULL, ADBREQ_SYNC, 5,
1132 ADB_WRITEREG(id,1),
1133 0x20, /* alt speed = 0x20 (rather slow) */
1134 0x00, /* norm speed = 0x00 (fastest) */
1135 0x10, /* extended protocol, no speed change */
1136 0x07); /* all buttons enabled as mouse buttons, no locking */
1137
1138
1139 adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
1140 }
1141
1142 static void
1143 init_ms_a3(int id)
1144 {
1145 struct adb_request req;
1146
1147 printk(" (Mouse Systems A3 Mouse, or compatible)");
1148 adb_request(&req, NULL, ADBREQ_SYNC, 3,
1149 ADB_WRITEREG(id, 0x2),
1150 0x00,
1151 0x07);
1152
1153 adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
1154 }
1155
1156 static int __init adbhid_init(void)
1157 {
1158 #ifndef CONFIG_MAC
1159 if ( (_machine != _MACH_chrp) && (_machine != _MACH_Pmac) )
1160 return 0;
1161 #endif
1162
1163 led_request.complete = 1;
1164
1165 adbhid_probe();
1166
1167 notifier_chain_register(&adb_client_list, &adbhid_adb_notifier);
1168
1169 return 0;
1170 }
1171
1172 static void __exit adbhid_exit(void)
1173 {
1174 }
1175
1176 module_init(adbhid_init);
1177 module_exit(adbhid_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree