xref: /openbmc/linux/drivers/macintosh/adbhid.c (revision ca55b2fe)
1 /*
2  * drivers/macintosh/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/module.h>
38 #include <linux/slab.h>
39 #include <linux/init.h>
40 #include <linux/notifier.h>
41 #include <linux/input.h>
42 
43 #include <linux/adb.h>
44 #include <linux/cuda.h>
45 #include <linux/pmu.h>
46 
47 #include <asm/machdep.h>
48 #ifdef CONFIG_PPC_PMAC
49 #include <asm/backlight.h>
50 #include <asm/pmac_feature.h>
51 #endif
52 
53 MODULE_AUTHOR("Franz Sirl <Franz.Sirl-kernel@lauterbach.com>");
54 
55 static int restore_capslock_events;
56 module_param(restore_capslock_events, int, 0644);
57 MODULE_PARM_DESC(restore_capslock_events,
58 	"Produce keypress events for capslock on both keyup and keydown.");
59 
60 #define KEYB_KEYREG	0	/* register # for key up/down data */
61 #define KEYB_LEDREG	2	/* register # for leds on ADB keyboard */
62 #define MOUSE_DATAREG	0	/* reg# for movement/button codes from mouse */
63 
64 static int adb_message_handler(struct notifier_block *, unsigned long, void *);
65 static struct notifier_block adbhid_adb_notifier = {
66 	.notifier_call	= adb_message_handler,
67 };
68 
69 /* Some special keys */
70 #define ADB_KEY_DEL		0x33
71 #define ADB_KEY_CMD		0x37
72 #define ADB_KEY_CAPSLOCK	0x39
73 #define ADB_KEY_FN		0x3f
74 #define ADB_KEY_FWDEL		0x75
75 #define ADB_KEY_POWER_OLD	0x7e
76 #define ADB_KEY_POWER		0x7f
77 
78 static const u16 adb_to_linux_keycodes[128] = {
79 	/* 0x00 */ KEY_A, 		/*  30 */
80 	/* 0x01 */ KEY_S, 		/*  31 */
81 	/* 0x02 */ KEY_D,		/*  32 */
82 	/* 0x03 */ KEY_F,		/*  33 */
83 	/* 0x04 */ KEY_H,		/*  35 */
84 	/* 0x05 */ KEY_G,		/*  34 */
85 	/* 0x06 */ KEY_Z,		/*  44 */
86 	/* 0x07 */ KEY_X,		/*  45 */
87 	/* 0x08 */ KEY_C,		/*  46 */
88 	/* 0x09 */ KEY_V,		/*  47 */
89 	/* 0x0a */ KEY_102ND,		/*  86 */
90 	/* 0x0b */ KEY_B,		/*  48 */
91 	/* 0x0c */ KEY_Q,		/*  16 */
92 	/* 0x0d */ KEY_W,		/*  17 */
93 	/* 0x0e */ KEY_E,		/*  18 */
94 	/* 0x0f */ KEY_R,		/*  19 */
95 	/* 0x10 */ KEY_Y,		/*  21 */
96 	/* 0x11 */ KEY_T,		/*  20 */
97 	/* 0x12 */ KEY_1,		/*   2 */
98 	/* 0x13 */ KEY_2,		/*   3 */
99 	/* 0x14 */ KEY_3,		/*   4 */
100 	/* 0x15 */ KEY_4,		/*   5 */
101 	/* 0x16 */ KEY_6,		/*   7 */
102 	/* 0x17 */ KEY_5,		/*   6 */
103 	/* 0x18 */ KEY_EQUAL,		/*  13 */
104 	/* 0x19 */ KEY_9,		/*  10 */
105 	/* 0x1a */ KEY_7,		/*   8 */
106 	/* 0x1b */ KEY_MINUS,		/*  12 */
107 	/* 0x1c */ KEY_8,		/*   9 */
108 	/* 0x1d */ KEY_0,		/*  11 */
109 	/* 0x1e */ KEY_RIGHTBRACE,	/*  27 */
110 	/* 0x1f */ KEY_O,		/*  24 */
111 	/* 0x20 */ KEY_U,		/*  22 */
112 	/* 0x21 */ KEY_LEFTBRACE,	/*  26 */
113 	/* 0x22 */ KEY_I,		/*  23 */
114 	/* 0x23 */ KEY_P,		/*  25 */
115 	/* 0x24 */ KEY_ENTER,		/*  28 */
116 	/* 0x25 */ KEY_L,		/*  38 */
117 	/* 0x26 */ KEY_J,		/*  36 */
118 	/* 0x27 */ KEY_APOSTROPHE,	/*  40 */
119 	/* 0x28 */ KEY_K,		/*  37 */
120 	/* 0x29 */ KEY_SEMICOLON,	/*  39 */
121 	/* 0x2a */ KEY_BACKSLASH,	/*  43 */
122 	/* 0x2b */ KEY_COMMA,		/*  51 */
123 	/* 0x2c */ KEY_SLASH,		/*  53 */
124 	/* 0x2d */ KEY_N,		/*  49 */
125 	/* 0x2e */ KEY_M,		/*  50 */
126 	/* 0x2f */ KEY_DOT,		/*  52 */
127 	/* 0x30 */ KEY_TAB,		/*  15 */
128 	/* 0x31 */ KEY_SPACE,		/*  57 */
129 	/* 0x32 */ KEY_GRAVE,		/*  41 */
130 	/* 0x33 */ KEY_BACKSPACE,	/*  14 */
131 	/* 0x34 */ KEY_KPENTER,		/*  96 */
132 	/* 0x35 */ KEY_ESC,		/*   1 */
133 	/* 0x36 */ KEY_LEFTCTRL,	/*  29 */
134 	/* 0x37 */ KEY_LEFTMETA,	/* 125 */
135 	/* 0x38 */ KEY_LEFTSHIFT,	/*  42 */
136 	/* 0x39 */ KEY_CAPSLOCK,	/*  58 */
137 	/* 0x3a */ KEY_LEFTALT,		/*  56 */
138 	/* 0x3b */ KEY_LEFT,		/* 105 */
139 	/* 0x3c */ KEY_RIGHT,		/* 106 */
140 	/* 0x3d */ KEY_DOWN,		/* 108 */
141 	/* 0x3e */ KEY_UP,		/* 103 */
142 	/* 0x3f */ KEY_FN,		/* 0x1d0 */
143 	/* 0x40 */ 0,
144 	/* 0x41 */ KEY_KPDOT,		/*  83 */
145 	/* 0x42 */ 0,
146 	/* 0x43 */ KEY_KPASTERISK,	/*  55 */
147 	/* 0x44 */ 0,
148 	/* 0x45 */ KEY_KPPLUS,		/*  78 */
149 	/* 0x46 */ 0,
150 	/* 0x47 */ KEY_NUMLOCK,		/*  69 */
151 	/* 0x48 */ 0,
152 	/* 0x49 */ 0,
153 	/* 0x4a */ 0,
154 	/* 0x4b */ KEY_KPSLASH,		/*  98 */
155 	/* 0x4c */ KEY_KPENTER,		/*  96 */
156 	/* 0x4d */ 0,
157 	/* 0x4e */ KEY_KPMINUS,		/*  74 */
158 	/* 0x4f */ 0,
159 	/* 0x50 */ 0,
160 	/* 0x51 */ KEY_KPEQUAL,		/* 117 */
161 	/* 0x52 */ KEY_KP0,		/*  82 */
162 	/* 0x53 */ KEY_KP1,		/*  79 */
163 	/* 0x54 */ KEY_KP2,		/*  80 */
164 	/* 0x55 */ KEY_KP3,		/*  81 */
165 	/* 0x56 */ KEY_KP4,		/*  75 */
166 	/* 0x57 */ KEY_KP5,		/*  76 */
167 	/* 0x58 */ KEY_KP6,		/*  77 */
168 	/* 0x59 */ KEY_KP7,		/*  71 */
169 	/* 0x5a */ 0,
170 	/* 0x5b */ KEY_KP8,		/*  72 */
171 	/* 0x5c */ KEY_KP9,		/*  73 */
172 	/* 0x5d */ KEY_YEN,		/* 124 */
173 	/* 0x5e */ KEY_RO,		/*  89 */
174 	/* 0x5f */ KEY_KPCOMMA,		/* 121 */
175 	/* 0x60 */ KEY_F5,		/*  63 */
176 	/* 0x61 */ KEY_F6,		/*  64 */
177 	/* 0x62 */ KEY_F7,		/*  65 */
178 	/* 0x63 */ KEY_F3,		/*  61 */
179 	/* 0x64 */ KEY_F8,		/*  66 */
180 	/* 0x65 */ KEY_F9,		/*  67 */
181 	/* 0x66 */ KEY_HANJA,		/* 123 */
182 	/* 0x67 */ KEY_F11,		/*  87 */
183 	/* 0x68 */ KEY_HANGEUL,		/* 122 */
184 	/* 0x69 */ KEY_SYSRQ,		/*  99 */
185 	/* 0x6a */ 0,
186 	/* 0x6b */ KEY_SCROLLLOCK,	/*  70 */
187 	/* 0x6c */ 0,
188 	/* 0x6d */ KEY_F10,		/*  68 */
189 	/* 0x6e */ KEY_COMPOSE,		/* 127 */
190 	/* 0x6f */ KEY_F12,		/*  88 */
191 	/* 0x70 */ 0,
192 	/* 0x71 */ KEY_PAUSE,		/* 119 */
193 	/* 0x72 */ KEY_INSERT,		/* 110 */
194 	/* 0x73 */ KEY_HOME,		/* 102 */
195 	/* 0x74 */ KEY_PAGEUP,		/* 104 */
196 	/* 0x75 */ KEY_DELETE,		/* 111 */
197 	/* 0x76 */ KEY_F4,		/*  62 */
198 	/* 0x77 */ KEY_END,		/* 107 */
199 	/* 0x78 */ KEY_F2,		/*  60 */
200 	/* 0x79 */ KEY_PAGEDOWN,	/* 109 */
201 	/* 0x7a */ KEY_F1,		/*  59 */
202 	/* 0x7b */ KEY_RIGHTSHIFT,	/*  54 */
203 	/* 0x7c */ KEY_RIGHTALT,	/* 100 */
204 	/* 0x7d */ KEY_RIGHTCTRL,	/*  97 */
205 	/* 0x7e */ KEY_RIGHTMETA,	/* 126 */
206 	/* 0x7f */ KEY_POWER,		/* 116 */
207 };
208 
209 struct adbhid {
210 	struct input_dev *input;
211 	int id;
212 	int default_id;
213 	int original_handler_id;
214 	int current_handler_id;
215 	int mouse_kind;
216 	u16 *keycode;
217 	char name[64];
218 	char phys[32];
219 	int flags;
220 };
221 
222 #define FLAG_FN_KEY_PRESSED		0x00000001
223 #define FLAG_POWER_FROM_FN		0x00000002
224 #define FLAG_EMU_FWDEL_DOWN		0x00000004
225 #define FLAG_CAPSLOCK_TRANSLATE		0x00000008
226 #define FLAG_CAPSLOCK_DOWN		0x00000010
227 #define FLAG_CAPSLOCK_IGNORE_NEXT	0x00000020
228 #define FLAG_POWER_KEY_PRESSED		0x00000040
229 
230 static struct adbhid *adbhid[16];
231 
232 static void adbhid_probe(void);
233 
234 static void adbhid_input_keycode(int, int, int);
235 
236 static void init_trackpad(int id);
237 static void init_trackball(int id);
238 static void init_turbomouse(int id);
239 static void init_microspeed(int id);
240 static void init_ms_a3(int id);
241 
242 static struct adb_ids keyboard_ids;
243 static struct adb_ids mouse_ids;
244 static struct adb_ids buttons_ids;
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, 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);
279 	if (!(data[2] == 0xff || (data[2] == 0x7f && data[1] == 0x7f)))
280 		adbhid_input_keycode(id, data[2], 0);
281 }
282 
283 static void
284 adbhid_input_keycode(int id, int scancode, int repeat)
285 {
286 	struct adbhid *ahid = adbhid[id];
287 	int keycode, up_flag, key;
288 
289 	keycode = scancode & 0x7f;
290 	up_flag = scancode & 0x80;
291 
292 	if (restore_capslock_events) {
293 		if (keycode == ADB_KEY_CAPSLOCK && !up_flag) {
294 			/* Key pressed, turning on the CapsLock LED.
295 			 * The next 0xff will be interpreted as a release. */
296 			if (ahid->flags & FLAG_CAPSLOCK_IGNORE_NEXT) {
297 				/* Throw away this key event if it happens
298 				 * just after resume. */
299 				ahid->flags &= ~FLAG_CAPSLOCK_IGNORE_NEXT;
300 				return;
301 			} else {
302 				ahid->flags |= FLAG_CAPSLOCK_TRANSLATE
303 					| FLAG_CAPSLOCK_DOWN;
304 			}
305 		} else if (scancode == 0xff &&
306 			   !(ahid->flags & FLAG_POWER_KEY_PRESSED)) {
307 			/* Scancode 0xff usually signifies that the capslock
308 			 * key was either pressed or released, or that the
309 			 * power button was released. */
310 			if (ahid->flags & FLAG_CAPSLOCK_TRANSLATE) {
311 				keycode = ADB_KEY_CAPSLOCK;
312 				if (ahid->flags & FLAG_CAPSLOCK_DOWN) {
313 					/* Key released */
314 					up_flag = 1;
315 					ahid->flags &= ~FLAG_CAPSLOCK_DOWN;
316 				} else {
317 					/* Key pressed */
318 					up_flag = 0;
319 					ahid->flags &= ~FLAG_CAPSLOCK_TRANSLATE;
320 				}
321 			} else {
322 				printk(KERN_INFO "Spurious caps lock event "
323 						 "(scancode 0xff).\n");
324 			}
325 		}
326 	}
327 
328 	switch (keycode) {
329 	case ADB_KEY_CAPSLOCK:
330 		if (!restore_capslock_events) {
331 			/* Generate down/up events for CapsLock every time. */
332 			input_report_key(ahid->input, KEY_CAPSLOCK, 1);
333 			input_sync(ahid->input);
334 			input_report_key(ahid->input, KEY_CAPSLOCK, 0);
335 			input_sync(ahid->input);
336 			return;
337 		}
338 		break;
339 #ifdef CONFIG_PPC_PMAC
340 	case ADB_KEY_POWER_OLD: /* Power key on PBook 3400 needs remapping */
341 		switch(pmac_call_feature(PMAC_FTR_GET_MB_INFO,
342 			NULL, PMAC_MB_INFO_MODEL, 0)) {
343 		case PMAC_TYPE_COMET:
344 		case PMAC_TYPE_HOOPER:
345 		case PMAC_TYPE_KANGA:
346 			keycode = ADB_KEY_POWER;
347 		}
348 		break;
349 	case ADB_KEY_POWER:
350 		/* Keep track of the power key state */
351 		if (up_flag)
352 			ahid->flags &= ~FLAG_POWER_KEY_PRESSED;
353 		else
354 			ahid->flags |= FLAG_POWER_KEY_PRESSED;
355 
356 		/* Fn + Command will produce a bogus "power" keycode */
357 		if (ahid->flags & FLAG_FN_KEY_PRESSED) {
358 			keycode = ADB_KEY_CMD;
359 			if (up_flag)
360 				ahid->flags &= ~FLAG_POWER_FROM_FN;
361 			else
362 				ahid->flags |= FLAG_POWER_FROM_FN;
363 		} else if (ahid->flags & FLAG_POWER_FROM_FN) {
364 			keycode = ADB_KEY_CMD;
365 			ahid->flags &= ~FLAG_POWER_FROM_FN;
366 		}
367 		break;
368 	case ADB_KEY_FN:
369 		/* Keep track of the Fn key state */
370 		if (up_flag) {
371 			ahid->flags &= ~FLAG_FN_KEY_PRESSED;
372 			/* Emulate Fn+delete = forward delete */
373 			if (ahid->flags & FLAG_EMU_FWDEL_DOWN) {
374 				ahid->flags &= ~FLAG_EMU_FWDEL_DOWN;
375 				keycode = ADB_KEY_FWDEL;
376 				break;
377 			}
378 		} else
379 			ahid->flags |= FLAG_FN_KEY_PRESSED;
380 		break;
381 	case ADB_KEY_DEL:
382 		/* Emulate Fn+delete = forward delete */
383 		if (ahid->flags & FLAG_FN_KEY_PRESSED) {
384 			keycode = ADB_KEY_FWDEL;
385 			if (up_flag)
386 				ahid->flags &= ~FLAG_EMU_FWDEL_DOWN;
387 			else
388 				ahid->flags |= FLAG_EMU_FWDEL_DOWN;
389 		}
390 		break;
391 #endif /* CONFIG_PPC_PMAC */
392 	}
393 
394 	key = adbhid[id]->keycode[keycode];
395 	if (key) {
396 		input_report_key(adbhid[id]->input, key, !up_flag);
397 		input_sync(adbhid[id]->input);
398 	} else
399 		printk(KERN_INFO "Unhandled ADB key (scancode %#02x) %s.\n", keycode,
400 		       up_flag ? "released" : "pressed");
401 
402 }
403 
404 static void
405 adbhid_mouse_input(unsigned char *data, int nb, int autopoll)
406 {
407 	int id = (data[0] >> 4) & 0x0f;
408 
409 	if (!adbhid[id]) {
410 		printk(KERN_ERR "ADB HID on ID %d not yet registered\n", id);
411 		return;
412 	}
413 
414   /*
415     Handler 1 -- 100cpi original Apple mouse protocol.
416     Handler 2 -- 200cpi original Apple mouse protocol.
417 
418     For Apple's standard one-button mouse protocol the data array will
419     contain the following values:
420 
421                 BITS    COMMENTS
422     data[0] = dddd 1100 ADB command: Talk, register 0, for device dddd.
423     data[1] = bxxx xxxx First button and x-axis motion.
424     data[2] = byyy yyyy Second button and y-axis motion.
425 
426     Handler 4 -- Apple Extended mouse protocol.
427 
428     For Apple's 3-button mouse protocol the data array will contain the
429     following values:
430 
431 		BITS    COMMENTS
432     data[0] = dddd 1100 ADB command: Talk, register 0, for device dddd.
433     data[1] = bxxx xxxx Left button and x-axis motion.
434     data[2] = byyy yyyy Second button and y-axis motion.
435     data[3] = byyy bxxx Third button and fourth button.  Y is additional
436 	      high bits of y-axis motion.  XY is additional
437 	      high bits of x-axis motion.
438 
439     MacAlly 2-button mouse protocol.
440 
441     For MacAlly 2-button mouse protocol the data array will contain the
442     following values:
443 
444 		BITS    COMMENTS
445     data[0] = dddd 1100 ADB command: Talk, register 0, for device dddd.
446     data[1] = bxxx xxxx Left button and x-axis motion.
447     data[2] = byyy yyyy Right button and y-axis motion.
448     data[3] = ???? ???? unknown
449     data[4] = ???? ???? unknown
450 
451   */
452 
453 	/* If it's a trackpad, we alias the second button to the first.
454 	   NOTE: Apple sends an ADB flush command to the trackpad when
455 	         the first (the real) button is released. We could do
456 		 this here using async flush requests.
457 	*/
458 	switch (adbhid[id]->mouse_kind)
459 	{
460 	    case ADBMOUSE_TRACKPAD:
461 		data[1] = (data[1] & 0x7f) | ((data[1] & data[2]) & 0x80);
462 		data[2] = data[2] | 0x80;
463 		break;
464 	    case ADBMOUSE_MICROSPEED:
465 		data[1] = (data[1] & 0x7f) | ((data[3] & 0x01) << 7);
466 		data[2] = (data[2] & 0x7f) | ((data[3] & 0x02) << 6);
467 		data[3] = (data[3] & 0x77) | ((data[3] & 0x04) << 5)
468 			| (data[3] & 0x08);
469 		break;
470 	    case ADBMOUSE_TRACKBALLPRO:
471 		data[1] = (data[1] & 0x7f) | (((data[3] & 0x04) << 5)
472 			& ((data[3] & 0x08) << 4));
473 		data[2] = (data[2] & 0x7f) | ((data[3] & 0x01) << 7);
474 		data[3] = (data[3] & 0x77) | ((data[3] & 0x02) << 6);
475 		break;
476 	    case ADBMOUSE_MS_A3:
477 		data[1] = (data[1] & 0x7f) | ((data[3] & 0x01) << 7);
478 		data[2] = (data[2] & 0x7f) | ((data[3] & 0x02) << 6);
479 		data[3] = ((data[3] & 0x04) << 5);
480 		break;
481             case ADBMOUSE_MACALLY2:
482 		data[3] = (data[2] & 0x80) ? 0x80 : 0x00;
483 		data[2] |= 0x80;  /* Right button is mapped as button 3 */
484 		nb=4;
485                 break;
486 	}
487 
488 	input_report_key(adbhid[id]->input, BTN_LEFT,   !((data[1] >> 7) & 1));
489 	input_report_key(adbhid[id]->input, BTN_MIDDLE, !((data[2] >> 7) & 1));
490 
491 	if (nb >= 4 && adbhid[id]->mouse_kind != ADBMOUSE_TRACKPAD)
492 		input_report_key(adbhid[id]->input, BTN_RIGHT,  !((data[3] >> 7) & 1));
493 
494 	input_report_rel(adbhid[id]->input, REL_X,
495 			 ((data[2]&0x7f) < 64 ? (data[2]&0x7f) : (data[2]&0x7f)-128 ));
496 	input_report_rel(adbhid[id]->input, REL_Y,
497 			 ((data[1]&0x7f) < 64 ? (data[1]&0x7f) : (data[1]&0x7f)-128 ));
498 
499 	input_sync(adbhid[id]->input);
500 }
501 
502 static void
503 adbhid_buttons_input(unsigned char *data, int nb, int autopoll)
504 {
505 	int id = (data[0] >> 4) & 0x0f;
506 
507 	if (!adbhid[id]) {
508 		printk(KERN_ERR "ADB HID on ID %d not yet registered\n", id);
509 		return;
510 	}
511 
512 	switch (adbhid[id]->original_handler_id) {
513 	default:
514 	case 0x02: /* Adjustable keyboard button device */
515 	  {
516 		int down = (data[1] == (data[1] & 0xf));
517 
518 		switch (data[1] & 0x0f) {
519 		case 0x0:	/* microphone */
520 			input_report_key(adbhid[id]->input, KEY_SOUND, down);
521 			break;
522 
523 		case 0x1:	/* mute */
524 			input_report_key(adbhid[id]->input, KEY_MUTE, down);
525 			break;
526 
527 		case 0x2:	/* volume decrease */
528 			input_report_key(adbhid[id]->input, KEY_VOLUMEDOWN, down);
529 			break;
530 
531 		case 0x3:	/* volume increase */
532 			input_report_key(adbhid[id]->input, KEY_VOLUMEUP, down);
533 			break;
534 
535 		default:
536 			printk(KERN_INFO "Unhandled ADB_MISC event %02x, %02x, %02x, %02x\n",
537 			       data[0], data[1], data[2], data[3]);
538 			break;
539 		}
540 	  }
541 	  break;
542 
543 	case 0x1f: /* Powerbook button device */
544 	  {
545 		int down = (data[1] == (data[1] & 0xf));
546 
547 		/*
548 		 * XXX: Where is the contrast control for the passive?
549 		 *  -- Cort
550 		 */
551 
552 		switch (data[1] & 0x0f) {
553 		case 0x8:	/* mute */
554 			input_report_key(adbhid[id]->input, KEY_MUTE, down);
555 			break;
556 
557 		case 0x7:	/* volume decrease */
558 			input_report_key(adbhid[id]->input, KEY_VOLUMEDOWN, down);
559 			break;
560 
561 		case 0x6:	/* volume increase */
562 			input_report_key(adbhid[id]->input, KEY_VOLUMEUP, down);
563 			break;
564 
565 		case 0xb:	/* eject */
566 			input_report_key(adbhid[id]->input, KEY_EJECTCD, down);
567 			break;
568 
569 		case 0xa:	/* brightness decrease */
570 #ifdef CONFIG_PMAC_BACKLIGHT
571 			if (down)
572 				pmac_backlight_key_down();
573 #endif
574 			input_report_key(adbhid[id]->input, KEY_BRIGHTNESSDOWN, down);
575 			break;
576 
577 		case 0x9:	/* brightness increase */
578 #ifdef CONFIG_PMAC_BACKLIGHT
579 			if (down)
580 				pmac_backlight_key_up();
581 #endif
582 			input_report_key(adbhid[id]->input, KEY_BRIGHTNESSUP, down);
583 			break;
584 
585 		case 0xc:	/* videomode switch */
586 			input_report_key(adbhid[id]->input, KEY_SWITCHVIDEOMODE, down);
587 			break;
588 
589 		case 0xd:	/* keyboard illumination toggle */
590 			input_report_key(adbhid[id]->input, KEY_KBDILLUMTOGGLE, down);
591 			break;
592 
593 		case 0xe:	/* keyboard illumination decrease */
594 			input_report_key(adbhid[id]->input, KEY_KBDILLUMDOWN, down);
595 			break;
596 
597 		case 0xf:
598 			switch (data[1]) {
599 			case 0x8f:
600 			case 0x0f:
601 				/* keyboard illumination increase */
602 				input_report_key(adbhid[id]->input, KEY_KBDILLUMUP, down);
603 				break;
604 
605 			case 0x7f:
606 			case 0xff:
607 				/* keypad overlay toogle */
608 				break;
609 
610 			default:
611 				printk(KERN_INFO "Unhandled ADB_MISC event %02x, %02x, %02x, %02x\n",
612 				       data[0], data[1], data[2], data[3]);
613 				break;
614 			}
615 			break;
616 		default:
617 			printk(KERN_INFO "Unhandled ADB_MISC event %02x, %02x, %02x, %02x\n",
618 			       data[0], data[1], data[2], data[3]);
619 			break;
620 		}
621 	  }
622 	  break;
623 	}
624 
625 	input_sync(adbhid[id]->input);
626 }
627 
628 static struct adb_request led_request;
629 static int leds_pending[16];
630 static int leds_req_pending;
631 static int pending_devs[16];
632 static int pending_led_start;
633 static int pending_led_end;
634 static DEFINE_SPINLOCK(leds_lock);
635 
636 static void leds_done(struct adb_request *req)
637 {
638 	int leds = 0, device = 0, pending = 0;
639 	unsigned long flags;
640 
641 	spin_lock_irqsave(&leds_lock, flags);
642 
643 	if (pending_led_start != pending_led_end) {
644 		device = pending_devs[pending_led_start];
645 		leds = leds_pending[device] & 0xff;
646 		leds_pending[device] = 0;
647 		pending_led_start++;
648 		pending_led_start = (pending_led_start < 16) ? pending_led_start : 0;
649 		pending = leds_req_pending;
650 	} else
651 		leds_req_pending = 0;
652 	spin_unlock_irqrestore(&leds_lock, flags);
653 	if (pending)
654 		adb_request(&led_request, leds_done, 0, 3,
655 			    ADB_WRITEREG(device, KEYB_LEDREG), 0xff, ~leds);
656 }
657 
658 static void real_leds(unsigned char leds, int device)
659 {
660 	unsigned long flags;
661 
662 	spin_lock_irqsave(&leds_lock, flags);
663 	if (!leds_req_pending) {
664 		leds_req_pending = 1;
665 		spin_unlock_irqrestore(&leds_lock, flags);
666 		adb_request(&led_request, leds_done, 0, 3,
667 			    ADB_WRITEREG(device, KEYB_LEDREG), 0xff, ~leds);
668 		return;
669 	} else {
670 		if (!(leds_pending[device] & 0x100)) {
671 			pending_devs[pending_led_end] = device;
672 			pending_led_end++;
673 			pending_led_end = (pending_led_end < 16) ? pending_led_end : 0;
674 		}
675 		leds_pending[device] = leds | 0x100;
676 	}
677 	spin_unlock_irqrestore(&leds_lock, flags);
678 }
679 
680 /*
681  * Event callback from the input module. Events that change the state of
682  * the hardware are processed here.
683  */
684 static int adbhid_kbd_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
685 {
686 	struct adbhid *adbhid = input_get_drvdata(dev);
687 	unsigned char leds;
688 
689 	switch (type) {
690 	case EV_LED:
691 		leds =  (test_bit(LED_SCROLLL, dev->led) ? 4 : 0) |
692 			(test_bit(LED_NUML,    dev->led) ? 1 : 0) |
693 			(test_bit(LED_CAPSL,   dev->led) ? 2 : 0);
694 		real_leds(leds, adbhid->id);
695 		return 0;
696 	}
697 
698 	return -1;
699 }
700 
701 static void
702 adbhid_kbd_capslock_remember(void)
703 {
704 	struct adbhid *ahid;
705 	int i;
706 
707 	for (i = 1; i < 16; i++) {
708 		ahid = adbhid[i];
709 
710 		if (ahid && ahid->id == ADB_KEYBOARD)
711 			if (ahid->flags & FLAG_CAPSLOCK_TRANSLATE)
712 				ahid->flags |= FLAG_CAPSLOCK_IGNORE_NEXT;
713 	}
714 }
715 
716 static int
717 adb_message_handler(struct notifier_block *this, unsigned long code, void *x)
718 {
719 	switch (code) {
720 	case ADB_MSG_PRE_RESET:
721 	case ADB_MSG_POWERDOWN:
722 		/* Stop the repeat timer. Autopoll is already off at this point */
723 		{
724 			int i;
725 			for (i = 1; i < 16; i++) {
726 				if (adbhid[i])
727 					del_timer_sync(&adbhid[i]->input->timer);
728 			}
729 		}
730 
731 		/* Stop pending led requests */
732 		while (leds_req_pending)
733 			adb_poll();
734 
735 		/* After resume, and if the capslock LED is on, the PMU will
736 		 * send a "capslock down" key event. This confuses the
737 		 * restore_capslock_events logic. Remember if the capslock
738 		 * LED was on before suspend so the unwanted key event can
739 		 * be ignored after resume. */
740 		if (restore_capslock_events)
741 			adbhid_kbd_capslock_remember();
742 
743 		break;
744 
745 	case ADB_MSG_POST_RESET:
746 		adbhid_probe();
747 		break;
748 	}
749 	return NOTIFY_DONE;
750 }
751 
752 static int
753 adbhid_input_register(int id, int default_id, int original_handler_id,
754 		      int current_handler_id, int mouse_kind)
755 {
756 	struct adbhid *hid;
757 	struct input_dev *input_dev;
758 	int err;
759 	int i;
760 
761 	if (adbhid[id]) {
762 		printk(KERN_ERR "Trying to reregister ADB HID on ID %d\n", id);
763 		return -EEXIST;
764 	}
765 
766 	adbhid[id] = hid = kzalloc(sizeof(struct adbhid), GFP_KERNEL);
767 	input_dev = input_allocate_device();
768 	if (!hid || !input_dev) {
769 		err = -ENOMEM;
770 		goto fail;
771 	}
772 
773 	sprintf(hid->phys, "adb%d:%d.%02x/input", id, default_id, original_handler_id);
774 
775 	hid->input = input_dev;
776 	hid->id = default_id;
777 	hid->original_handler_id = original_handler_id;
778 	hid->current_handler_id = current_handler_id;
779 	hid->mouse_kind = mouse_kind;
780 	hid->flags = 0;
781 	input_set_drvdata(input_dev, hid);
782 	input_dev->name = hid->name;
783 	input_dev->phys = hid->phys;
784 	input_dev->id.bustype = BUS_ADB;
785 	input_dev->id.vendor = 0x0001;
786 	input_dev->id.product = (id << 12) | (default_id << 8) | original_handler_id;
787 	input_dev->id.version = 0x0100;
788 
789 	switch (default_id) {
790 	case ADB_KEYBOARD:
791 		hid->keycode = kmalloc(sizeof(adb_to_linux_keycodes), GFP_KERNEL);
792 		if (!hid->keycode) {
793 			err = -ENOMEM;
794 			goto fail;
795 		}
796 
797 		sprintf(hid->name, "ADB keyboard");
798 
799 		memcpy(hid->keycode, adb_to_linux_keycodes, sizeof(adb_to_linux_keycodes));
800 
801 		printk(KERN_INFO "Detected ADB keyboard, type ");
802 		switch (original_handler_id) {
803 		default:
804 			printk("<unknown>.\n");
805 			input_dev->id.version = ADB_KEYBOARD_UNKNOWN;
806 			break;
807 
808 		case 0x01: case 0x02: case 0x03: case 0x06: case 0x08:
809 		case 0x0C: case 0x10: case 0x18: case 0x1B: case 0x1C:
810 		case 0xC0: case 0xC3: case 0xC6:
811 			printk("ANSI.\n");
812 			input_dev->id.version = ADB_KEYBOARD_ANSI;
813 			break;
814 
815 		case 0x04: case 0x05: case 0x07: case 0x09: case 0x0D:
816 		case 0x11: case 0x14: case 0x19: case 0x1D: case 0xC1:
817 		case 0xC4: case 0xC7:
818 			printk("ISO, swapping keys.\n");
819 			input_dev->id.version = ADB_KEYBOARD_ISO;
820 			i = hid->keycode[10];
821 			hid->keycode[10] = hid->keycode[50];
822 			hid->keycode[50] = i;
823 			break;
824 
825 		case 0x12: case 0x15: case 0x16: case 0x17: case 0x1A:
826 		case 0x1E: case 0xC2: case 0xC5: case 0xC8: case 0xC9:
827 			printk("JIS.\n");
828 			input_dev->id.version = ADB_KEYBOARD_JIS;
829 			break;
830 		}
831 
832 		for (i = 0; i < 128; i++)
833 			if (hid->keycode[i])
834 				set_bit(hid->keycode[i], input_dev->keybit);
835 
836 		input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_LED) |
837 			BIT_MASK(EV_REP);
838 		input_dev->ledbit[0] = BIT_MASK(LED_SCROLLL) |
839 			BIT_MASK(LED_CAPSL) | BIT_MASK(LED_NUML);
840 		input_dev->event = adbhid_kbd_event;
841 		input_dev->keycodemax = KEY_FN;
842 		input_dev->keycodesize = sizeof(hid->keycode[0]);
843 		break;
844 
845 	case ADB_MOUSE:
846 		sprintf(hid->name, "ADB mouse");
847 
848 		input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
849 		input_dev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) |
850 			BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
851 		input_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
852 		break;
853 
854 	case ADB_MISC:
855 		switch (original_handler_id) {
856 		case 0x02: /* Adjustable keyboard button device */
857 			sprintf(hid->name, "ADB adjustable keyboard buttons");
858 			input_dev->evbit[0] = BIT_MASK(EV_KEY) |
859 				BIT_MASK(EV_REP);
860 			set_bit(KEY_SOUND, input_dev->keybit);
861 			set_bit(KEY_MUTE, input_dev->keybit);
862 			set_bit(KEY_VOLUMEUP, input_dev->keybit);
863 			set_bit(KEY_VOLUMEDOWN, input_dev->keybit);
864 			break;
865 		case 0x1f: /* Powerbook button device */
866 			sprintf(hid->name, "ADB Powerbook buttons");
867 			input_dev->evbit[0] = BIT_MASK(EV_KEY) |
868 				BIT_MASK(EV_REP);
869 			set_bit(KEY_MUTE, input_dev->keybit);
870 			set_bit(KEY_VOLUMEUP, input_dev->keybit);
871 			set_bit(KEY_VOLUMEDOWN, input_dev->keybit);
872 			set_bit(KEY_BRIGHTNESSUP, input_dev->keybit);
873 			set_bit(KEY_BRIGHTNESSDOWN, input_dev->keybit);
874 			set_bit(KEY_EJECTCD, input_dev->keybit);
875 			set_bit(KEY_SWITCHVIDEOMODE, input_dev->keybit);
876 			set_bit(KEY_KBDILLUMTOGGLE, input_dev->keybit);
877 			set_bit(KEY_KBDILLUMDOWN, input_dev->keybit);
878 			set_bit(KEY_KBDILLUMUP, input_dev->keybit);
879 			break;
880 		}
881 		if (hid->name[0])
882 			break;
883 		/* else fall through */
884 
885 	default:
886 		printk(KERN_INFO "Trying to register unknown ADB device to input layer.\n");
887 		err = -ENODEV;
888 		goto fail;
889 	}
890 
891 	input_dev->keycode = hid->keycode;
892 
893 	err = input_register_device(input_dev);
894 	if (err)
895 		goto fail;
896 
897 	if (default_id == ADB_KEYBOARD) {
898 		/* HACK WARNING!! This should go away as soon there is an utility
899 		 * to control that for event devices.
900 		 */
901 		input_dev->rep[REP_DELAY] = 500;   /* input layer default: 250 */
902 		input_dev->rep[REP_PERIOD] = 66; /* input layer default: 33 */
903 	}
904 
905 	return 0;
906 
907  fail:	input_free_device(input_dev);
908 	if (hid) {
909 		kfree(hid->keycode);
910 		kfree(hid);
911 	}
912 	adbhid[id] = NULL;
913 	return err;
914 }
915 
916 static void adbhid_input_unregister(int id)
917 {
918 	input_unregister_device(adbhid[id]->input);
919 	kfree(adbhid[id]->keycode);
920 	kfree(adbhid[id]);
921 	adbhid[id] = NULL;
922 }
923 
924 
925 static u16
926 adbhid_input_reregister(int id, int default_id, int org_handler_id,
927 			int cur_handler_id, int mk)
928 {
929 	if (adbhid[id]) {
930 		if (adbhid[id]->input->id.product !=
931 		    ((id << 12)|(default_id << 8)|org_handler_id)) {
932 			adbhid_input_unregister(id);
933 			adbhid_input_register(id, default_id, org_handler_id,
934 					      cur_handler_id, mk);
935 		}
936 	} else
937 		adbhid_input_register(id, default_id, org_handler_id,
938 				      cur_handler_id, mk);
939 	return 1<<id;
940 }
941 
942 static void
943 adbhid_input_devcleanup(u16 exist)
944 {
945 	int i;
946 	for(i=1; i<16; i++)
947 		if (adbhid[i] && !(exist&(1<<i)))
948 			adbhid_input_unregister(i);
949 }
950 
951 static void
952 adbhid_probe(void)
953 {
954 	struct adb_request req;
955 	int i, default_id, org_handler_id, cur_handler_id;
956 	u16 reg = 0;
957 
958 	adb_register(ADB_MOUSE, 0, &mouse_ids, adbhid_mouse_input);
959 	adb_register(ADB_KEYBOARD, 0, &keyboard_ids, adbhid_keyboard_input);
960 	adb_register(ADB_MISC, 0, &buttons_ids, adbhid_buttons_input);
961 
962 	for (i = 0; i < keyboard_ids.nids; i++) {
963 		int id = keyboard_ids.id[i];
964 
965 		adb_get_infos(id, &default_id, &org_handler_id);
966 
967 		/* turn off all leds */
968 		adb_request(&req, NULL, ADBREQ_SYNC, 3,
969 			    ADB_WRITEREG(id, KEYB_LEDREG), 0xff, 0xff);
970 
971 		/* Enable full feature set of the keyboard
972 		   ->get it to send separate codes for left and right shift,
973 		   control, option keys */
974 #if 0		/* handler 5 doesn't send separate codes for R modifiers */
975 		if (adb_try_handler_change(id, 5))
976 			printk("ADB keyboard at %d, handler set to 5\n", id);
977 		else
978 #endif
979 		if (adb_try_handler_change(id, 3))
980 			printk("ADB keyboard at %d, handler set to 3\n", id);
981 		else
982 			printk("ADB keyboard at %d, handler 1\n", id);
983 
984 		adb_get_infos(id, &default_id, &cur_handler_id);
985 		reg |= adbhid_input_reregister(id, default_id, org_handler_id,
986 					       cur_handler_id, 0);
987 	}
988 
989 	for (i = 0; i < buttons_ids.nids; i++) {
990 		int id = buttons_ids.id[i];
991 
992 		adb_get_infos(id, &default_id, &org_handler_id);
993 		reg |= adbhid_input_reregister(id, default_id, org_handler_id,
994 					       org_handler_id, 0);
995 	}
996 
997 	/* Try to switch all mice to handler 4, or 2 for three-button
998 	   mode and full resolution. */
999 	for (i = 0; i < mouse_ids.nids; i++) {
1000 		int id = mouse_ids.id[i];
1001 		int mouse_kind;
1002 
1003 		adb_get_infos(id, &default_id, &org_handler_id);
1004 
1005 		if (adb_try_handler_change(id, 4)) {
1006 			printk("ADB mouse at %d, handler set to 4", id);
1007 			mouse_kind = ADBMOUSE_EXTENDED;
1008 		}
1009 		else if (adb_try_handler_change(id, 0x2F)) {
1010 			printk("ADB mouse at %d, handler set to 0x2F", id);
1011 			mouse_kind = ADBMOUSE_MICROSPEED;
1012 		}
1013 		else if (adb_try_handler_change(id, 0x42)) {
1014 			printk("ADB mouse at %d, handler set to 0x42", id);
1015 			mouse_kind = ADBMOUSE_TRACKBALLPRO;
1016 		}
1017 		else if (adb_try_handler_change(id, 0x66)) {
1018 			printk("ADB mouse at %d, handler set to 0x66", id);
1019 			mouse_kind = ADBMOUSE_MICROSPEED;
1020 		}
1021 		else if (adb_try_handler_change(id, 0x5F)) {
1022 			printk("ADB mouse at %d, handler set to 0x5F", id);
1023 			mouse_kind = ADBMOUSE_MICROSPEED;
1024 		}
1025 		else if (adb_try_handler_change(id, 3)) {
1026 			printk("ADB mouse at %d, handler set to 3", id);
1027 			mouse_kind = ADBMOUSE_MS_A3;
1028 		}
1029 		else if (adb_try_handler_change(id, 2)) {
1030 			printk("ADB mouse at %d, handler set to 2", id);
1031 			mouse_kind = ADBMOUSE_STANDARD_200;
1032 		}
1033 		else {
1034 			printk("ADB mouse at %d, handler 1", id);
1035 			mouse_kind = ADBMOUSE_STANDARD_100;
1036 		}
1037 
1038 		if ((mouse_kind == ADBMOUSE_TRACKBALLPRO)
1039 		    || (mouse_kind == ADBMOUSE_MICROSPEED)) {
1040 			init_microspeed(id);
1041 		} else if (mouse_kind == ADBMOUSE_MS_A3) {
1042 			init_ms_a3(id);
1043 		} else if (mouse_kind ==  ADBMOUSE_EXTENDED) {
1044 			/*
1045 			 * Register 1 is usually used for device
1046 			 * identification.  Here, we try to identify
1047 			 * a known device and call the appropriate
1048 			 * init function.
1049 			 */
1050 			adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
1051 				    ADB_READREG(id, 1));
1052 
1053 			if ((req.reply_len) &&
1054 			    (req.reply[1] == 0x9a) && ((req.reply[2] == 0x21)
1055 			    	|| (req.reply[2] == 0x20))) {
1056 				mouse_kind = ADBMOUSE_TRACKBALL;
1057 				init_trackball(id);
1058 			}
1059 			else if ((req.reply_len >= 4) &&
1060 			    (req.reply[1] == 0x74) && (req.reply[2] == 0x70) &&
1061 			    (req.reply[3] == 0x61) && (req.reply[4] == 0x64)) {
1062 				mouse_kind = ADBMOUSE_TRACKPAD;
1063 				init_trackpad(id);
1064 			}
1065 			else if ((req.reply_len >= 4) &&
1066 			    (req.reply[1] == 0x4b) && (req.reply[2] == 0x4d) &&
1067 			    (req.reply[3] == 0x4c) && (req.reply[4] == 0x31)) {
1068 				mouse_kind = ADBMOUSE_TURBOMOUSE5;
1069 				init_turbomouse(id);
1070 			}
1071 			else if ((req.reply_len == 9) &&
1072 			    (req.reply[1] == 0x4b) && (req.reply[2] == 0x4f) &&
1073 			    (req.reply[3] == 0x49) && (req.reply[4] == 0x54)) {
1074 				if (adb_try_handler_change(id, 0x42)) {
1075 					printk("\nADB MacAlly 2-button mouse at %d, handler set to 0x42", id);
1076 					mouse_kind = ADBMOUSE_MACALLY2;
1077 				}
1078 			}
1079 		}
1080 		printk("\n");
1081 
1082 		adb_get_infos(id, &default_id, &cur_handler_id);
1083 		reg |= adbhid_input_reregister(id, default_id, org_handler_id,
1084 					       cur_handler_id, mouse_kind);
1085 	}
1086 	adbhid_input_devcleanup(reg);
1087 }
1088 
1089 static void
1090 init_trackpad(int id)
1091 {
1092 	struct adb_request req;
1093 	unsigned char r1_buffer[8];
1094 
1095 	printk(" (trackpad)");
1096 
1097 	adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
1098 		    ADB_READREG(id,1));
1099 	if (req.reply_len < 8)
1100 	    printk("bad length for reg. 1\n");
1101 	else
1102 	{
1103 	    memcpy(r1_buffer, &req.reply[1], 8);
1104 
1105 	    adb_request(&req, NULL, ADBREQ_SYNC, 9,
1106 	        ADB_WRITEREG(id,1),
1107 	            r1_buffer[0],
1108 	            r1_buffer[1],
1109 	            r1_buffer[2],
1110 	            r1_buffer[3],
1111 	            r1_buffer[4],
1112 	            r1_buffer[5],
1113 	            0x0d,
1114 	            r1_buffer[7]);
1115 
1116             adb_request(&req, NULL, ADBREQ_SYNC, 9,
1117 	        ADB_WRITEREG(id,2),
1118 	    	    0x99,
1119 	    	    0x94,
1120 	    	    0x19,
1121 	    	    0xff,
1122 	    	    0xb2,
1123 	    	    0x8a,
1124 	    	    0x1b,
1125 	    	    0x50);
1126 
1127 	    adb_request(&req, NULL, ADBREQ_SYNC, 9,
1128 	        ADB_WRITEREG(id,1),
1129 	            r1_buffer[0],
1130 	            r1_buffer[1],
1131 	            r1_buffer[2],
1132 	            r1_buffer[3],
1133 	            r1_buffer[4],
1134 	            r1_buffer[5],
1135 	            0x03, /*r1_buffer[6],*/
1136 	            r1_buffer[7]);
1137 
1138 	    /* Without this flush, the trackpad may be locked up */
1139 	    adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
1140         }
1141 }
1142 
1143 static void
1144 init_trackball(int id)
1145 {
1146 	struct adb_request req;
1147 
1148 	printk(" (trackman/mouseman)");
1149 
1150 	adb_request(&req, NULL, ADBREQ_SYNC, 3,
1151 	ADB_WRITEREG(id,1), 00,0x81);
1152 
1153 	adb_request(&req, NULL, ADBREQ_SYNC, 3,
1154 	ADB_WRITEREG(id,1), 01,0x81);
1155 
1156 	adb_request(&req, NULL, ADBREQ_SYNC, 3,
1157 	ADB_WRITEREG(id,1), 02,0x81);
1158 
1159 	adb_request(&req, NULL, ADBREQ_SYNC, 3,
1160 	ADB_WRITEREG(id,1), 03,0x38);
1161 
1162 	adb_request(&req, NULL, ADBREQ_SYNC, 3,
1163 	ADB_WRITEREG(id,1), 00,0x81);
1164 
1165 	adb_request(&req, NULL, ADBREQ_SYNC, 3,
1166 	ADB_WRITEREG(id,1), 01,0x81);
1167 
1168 	adb_request(&req, NULL, ADBREQ_SYNC, 3,
1169 	ADB_WRITEREG(id,1), 02,0x81);
1170 
1171 	adb_request(&req, NULL, ADBREQ_SYNC, 3,
1172 	ADB_WRITEREG(id,1), 03,0x38);
1173 }
1174 
1175 static void
1176 init_turbomouse(int id)
1177 {
1178 	struct adb_request req;
1179 
1180         printk(" (TurboMouse 5)");
1181 
1182 	adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
1183 
1184 	adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(3));
1185 
1186 	adb_request(&req, NULL, ADBREQ_SYNC, 9,
1187 	ADB_WRITEREG(3,2),
1188 	    0xe7,
1189 	    0x8c,
1190 	    0,
1191 	    0,
1192 	    0,
1193 	    0xff,
1194 	    0xff,
1195 	    0x94);
1196 
1197 	adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(3));
1198 
1199 	adb_request(&req, NULL, ADBREQ_SYNC, 9,
1200 	ADB_WRITEREG(3,2),
1201 	    0xa5,
1202 	    0x14,
1203 	    0,
1204 	    0,
1205 	    0x69,
1206 	    0xff,
1207 	    0xff,
1208 	    0x27);
1209 }
1210 
1211 static void
1212 init_microspeed(int id)
1213 {
1214 	struct adb_request req;
1215 
1216         printk(" (Microspeed/MacPoint or compatible)");
1217 
1218 	adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
1219 
1220 	/* This will initialize mice using the Microspeed, MacPoint and
1221 	   other compatible firmware. Bit 12 enables extended protocol.
1222 
1223 	   Register 1 Listen (4 Bytes)
1224             0 -  3     Button is mouse (set also for double clicking!!!)
1225             4 -  7     Button is locking (affects change speed also)
1226             8 - 11     Button changes speed
1227            12          1 = Extended mouse mode, 0 = normal mouse mode
1228            13 - 15     unused 0
1229            16 - 23     normal speed
1230            24 - 31     changed speed
1231 
1232        Register 1 talk holds version and product identification information.
1233        Register 1 Talk (4 Bytes):
1234             0 -  7     Product code
1235             8 - 23     undefined, reserved
1236            24 - 31     Version number
1237 
1238        Speed 0 is max. 1 to 255 set speed in increments of 1/256 of max.
1239  */
1240 	adb_request(&req, NULL, ADBREQ_SYNC, 5,
1241 	ADB_WRITEREG(id,1),
1242 	    0x20,	/* alt speed = 0x20 (rather slow) */
1243 	    0x00,	/* norm speed = 0x00 (fastest) */
1244 	    0x10,	/* extended protocol, no speed change */
1245 	    0x07);	/* all buttons enabled as mouse buttons, no locking */
1246 
1247 
1248 	adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
1249 }
1250 
1251 static void
1252 init_ms_a3(int id)
1253 {
1254 	struct adb_request req;
1255 
1256 	printk(" (Mouse Systems A3 Mouse, or compatible)");
1257 	adb_request(&req, NULL, ADBREQ_SYNC, 3,
1258 	ADB_WRITEREG(id, 0x2),
1259 	    0x00,
1260 	    0x07);
1261 
1262  	adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
1263 }
1264 
1265 static int __init adbhid_init(void)
1266 {
1267 #ifndef CONFIG_MAC
1268 	if (!machine_is(chrp) && !machine_is(powermac))
1269 		return 0;
1270 #endif
1271 
1272 	led_request.complete = 1;
1273 
1274 	adbhid_probe();
1275 
1276 	blocking_notifier_chain_register(&adb_client_list,
1277 			&adbhid_adb_notifier);
1278 
1279 	return 0;
1280 }
1281 
1282 static void __exit adbhid_exit(void)
1283 {
1284 }
1285 
1286 module_init(adbhid_init);
1287 module_exit(adbhid_exit);
1288