xref: /openbmc/linux/drivers/macintosh/adbhid.c (revision 68198dca)
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * drivers/macintosh/adbhid.c
4  *
5  * ADB HID driver for Power Macintosh computers.
6  *
7  * Adapted from drivers/macintosh/mac_keyb.c by Franz Sirl.
8  * drivers/macintosh/mac_keyb.c was Copyright (C) 1996 Paul Mackerras
9  * with considerable contributions from Ben Herrenschmidt and others.
10  *
11  * Copyright (C) 2000 Franz Sirl.
12  *
13  * Adapted to ADB changes and support for more devices by
14  * Benjamin Herrenschmidt. Adapted from code in MkLinux
15  * and reworked.
16  *
17  * Supported devices:
18  *
19  * - Standard 1 button mouse
20  * - All standard Apple Extended protocol (handler ID 4)
21  * - mouseman and trackman mice & trackballs
22  * - PowerBook Trackpad (default setup: enable tapping)
23  * - MicroSpeed mouse & trackball (needs testing)
24  * - CH Products Trackball Pro (needs testing)
25  * - Contour Design (Contour Mouse)
26  * - Hunter digital (NoHandsMouse)
27  * - Kensignton TurboMouse 5 (needs testing)
28  * - Mouse Systems A3 mice and trackballs <aidan@kublai.com>
29  * - MacAlly 2-buttons mouse (needs testing) <pochini@denise.shiny.it>
30  *
31  * To do:
32  *
33  * Improve Kensington support.
34  * Split mouse/kbd
35  * Move to syfs
36  */
37 
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/backlight.h>
51 #include <asm/pmac_feature.h>
52 #endif
53 
54 MODULE_AUTHOR("Franz Sirl <Franz.Sirl-kernel@lauterbach.com>");
55 
56 static int restore_capslock_events;
57 module_param(restore_capslock_events, int, 0644);
58 MODULE_PARM_DESC(restore_capslock_events,
59 	"Produce keypress events for capslock on both keyup and keydown.");
60 
61 #define KEYB_KEYREG	0	/* register # for key up/down data */
62 #define KEYB_LEDREG	2	/* register # for leds on ADB keyboard */
63 #define MOUSE_DATAREG	0	/* reg# for movement/button codes from mouse */
64 
65 static int adb_message_handler(struct notifier_block *, unsigned long, void *);
66 static struct notifier_block adbhid_adb_notifier = {
67 	.notifier_call	= adb_message_handler,
68 };
69 
70 /* Some special keys */
71 #define ADB_KEY_DEL		0x33
72 #define ADB_KEY_CMD		0x37
73 #define ADB_KEY_CAPSLOCK	0x39
74 #define ADB_KEY_FN		0x3f
75 #define ADB_KEY_FWDEL		0x75
76 #define ADB_KEY_POWER_OLD	0x7e
77 #define ADB_KEY_POWER		0x7f
78 
79 static const u16 adb_to_linux_keycodes[128] = {
80 	/* 0x00 */ KEY_A, 		/*  30 */
81 	/* 0x01 */ KEY_S, 		/*  31 */
82 	/* 0x02 */ KEY_D,		/*  32 */
83 	/* 0x03 */ KEY_F,		/*  33 */
84 	/* 0x04 */ KEY_H,		/*  35 */
85 	/* 0x05 */ KEY_G,		/*  34 */
86 	/* 0x06 */ KEY_Z,		/*  44 */
87 	/* 0x07 */ KEY_X,		/*  45 */
88 	/* 0x08 */ KEY_C,		/*  46 */
89 	/* 0x09 */ KEY_V,		/*  47 */
90 	/* 0x0a */ KEY_102ND,		/*  86 */
91 	/* 0x0b */ KEY_B,		/*  48 */
92 	/* 0x0c */ KEY_Q,		/*  16 */
93 	/* 0x0d */ KEY_W,		/*  17 */
94 	/* 0x0e */ KEY_E,		/*  18 */
95 	/* 0x0f */ KEY_R,		/*  19 */
96 	/* 0x10 */ KEY_Y,		/*  21 */
97 	/* 0x11 */ KEY_T,		/*  20 */
98 	/* 0x12 */ KEY_1,		/*   2 */
99 	/* 0x13 */ KEY_2,		/*   3 */
100 	/* 0x14 */ KEY_3,		/*   4 */
101 	/* 0x15 */ KEY_4,		/*   5 */
102 	/* 0x16 */ KEY_6,		/*   7 */
103 	/* 0x17 */ KEY_5,		/*   6 */
104 	/* 0x18 */ KEY_EQUAL,		/*  13 */
105 	/* 0x19 */ KEY_9,		/*  10 */
106 	/* 0x1a */ KEY_7,		/*   8 */
107 	/* 0x1b */ KEY_MINUS,		/*  12 */
108 	/* 0x1c */ KEY_8,		/*   9 */
109 	/* 0x1d */ KEY_0,		/*  11 */
110 	/* 0x1e */ KEY_RIGHTBRACE,	/*  27 */
111 	/* 0x1f */ KEY_O,		/*  24 */
112 	/* 0x20 */ KEY_U,		/*  22 */
113 	/* 0x21 */ KEY_LEFTBRACE,	/*  26 */
114 	/* 0x22 */ KEY_I,		/*  23 */
115 	/* 0x23 */ KEY_P,		/*  25 */
116 	/* 0x24 */ KEY_ENTER,		/*  28 */
117 	/* 0x25 */ KEY_L,		/*  38 */
118 	/* 0x26 */ KEY_J,		/*  36 */
119 	/* 0x27 */ KEY_APOSTROPHE,	/*  40 */
120 	/* 0x28 */ KEY_K,		/*  37 */
121 	/* 0x29 */ KEY_SEMICOLON,	/*  39 */
122 	/* 0x2a */ KEY_BACKSLASH,	/*  43 */
123 	/* 0x2b */ KEY_COMMA,		/*  51 */
124 	/* 0x2c */ KEY_SLASH,		/*  53 */
125 	/* 0x2d */ KEY_N,		/*  49 */
126 	/* 0x2e */ KEY_M,		/*  50 */
127 	/* 0x2f */ KEY_DOT,		/*  52 */
128 	/* 0x30 */ KEY_TAB,		/*  15 */
129 	/* 0x31 */ KEY_SPACE,		/*  57 */
130 	/* 0x32 */ KEY_GRAVE,		/*  41 */
131 	/* 0x33 */ KEY_BACKSPACE,	/*  14 */
132 	/* 0x34 */ KEY_KPENTER,		/*  96 */
133 	/* 0x35 */ KEY_ESC,		/*   1 */
134 	/* 0x36 */ KEY_LEFTCTRL,	/*  29 */
135 	/* 0x37 */ KEY_LEFTMETA,	/* 125 */
136 	/* 0x38 */ KEY_LEFTSHIFT,	/*  42 */
137 	/* 0x39 */ KEY_CAPSLOCK,	/*  58 */
138 	/* 0x3a */ KEY_LEFTALT,		/*  56 */
139 	/* 0x3b */ KEY_LEFT,		/* 105 */
140 	/* 0x3c */ KEY_RIGHT,		/* 106 */
141 	/* 0x3d */ KEY_DOWN,		/* 108 */
142 	/* 0x3e */ KEY_UP,		/* 103 */
143 	/* 0x3f */ KEY_FN,		/* 0x1d0 */
144 	/* 0x40 */ 0,
145 	/* 0x41 */ KEY_KPDOT,		/*  83 */
146 	/* 0x42 */ 0,
147 	/* 0x43 */ KEY_KPASTERISK,	/*  55 */
148 	/* 0x44 */ 0,
149 	/* 0x45 */ KEY_KPPLUS,		/*  78 */
150 	/* 0x46 */ 0,
151 	/* 0x47 */ KEY_NUMLOCK,		/*  69 */
152 	/* 0x48 */ 0,
153 	/* 0x49 */ 0,
154 	/* 0x4a */ 0,
155 	/* 0x4b */ KEY_KPSLASH,		/*  98 */
156 	/* 0x4c */ KEY_KPENTER,		/*  96 */
157 	/* 0x4d */ 0,
158 	/* 0x4e */ KEY_KPMINUS,		/*  74 */
159 	/* 0x4f */ 0,
160 	/* 0x50 */ 0,
161 	/* 0x51 */ KEY_KPEQUAL,		/* 117 */
162 	/* 0x52 */ KEY_KP0,		/*  82 */
163 	/* 0x53 */ KEY_KP1,		/*  79 */
164 	/* 0x54 */ KEY_KP2,		/*  80 */
165 	/* 0x55 */ KEY_KP3,		/*  81 */
166 	/* 0x56 */ KEY_KP4,		/*  75 */
167 	/* 0x57 */ KEY_KP5,		/*  76 */
168 	/* 0x58 */ KEY_KP6,		/*  77 */
169 	/* 0x59 */ KEY_KP7,		/*  71 */
170 	/* 0x5a */ 0,
171 	/* 0x5b */ KEY_KP8,		/*  72 */
172 	/* 0x5c */ KEY_KP9,		/*  73 */
173 	/* 0x5d */ KEY_YEN,		/* 124 */
174 	/* 0x5e */ KEY_RO,		/*  89 */
175 	/* 0x5f */ KEY_KPCOMMA,		/* 121 */
176 	/* 0x60 */ KEY_F5,		/*  63 */
177 	/* 0x61 */ KEY_F6,		/*  64 */
178 	/* 0x62 */ KEY_F7,		/*  65 */
179 	/* 0x63 */ KEY_F3,		/*  61 */
180 	/* 0x64 */ KEY_F8,		/*  66 */
181 	/* 0x65 */ KEY_F9,		/*  67 */
182 	/* 0x66 */ KEY_HANJA,		/* 123 */
183 	/* 0x67 */ KEY_F11,		/*  87 */
184 	/* 0x68 */ KEY_HANGEUL,		/* 122 */
185 	/* 0x69 */ KEY_SYSRQ,		/*  99 */
186 	/* 0x6a */ 0,
187 	/* 0x6b */ KEY_SCROLLLOCK,	/*  70 */
188 	/* 0x6c */ 0,
189 	/* 0x6d */ KEY_F10,		/*  68 */
190 	/* 0x6e */ KEY_COMPOSE,		/* 127 */
191 	/* 0x6f */ KEY_F12,		/*  88 */
192 	/* 0x70 */ 0,
193 	/* 0x71 */ KEY_PAUSE,		/* 119 */
194 	/* 0x72 */ KEY_INSERT,		/* 110 */
195 	/* 0x73 */ KEY_HOME,		/* 102 */
196 	/* 0x74 */ KEY_PAGEUP,		/* 104 */
197 	/* 0x75 */ KEY_DELETE,		/* 111 */
198 	/* 0x76 */ KEY_F4,		/*  62 */
199 	/* 0x77 */ KEY_END,		/* 107 */
200 	/* 0x78 */ KEY_F2,		/*  60 */
201 	/* 0x79 */ KEY_PAGEDOWN,	/* 109 */
202 	/* 0x7a */ KEY_F1,		/*  59 */
203 	/* 0x7b */ KEY_RIGHTSHIFT,	/*  54 */
204 	/* 0x7c */ KEY_RIGHTALT,	/* 100 */
205 	/* 0x7d */ KEY_RIGHTCTRL,	/*  97 */
206 	/* 0x7e */ KEY_RIGHTMETA,	/* 126 */
207 	/* 0x7f */ KEY_POWER,		/* 116 */
208 };
209 
210 struct adbhid {
211 	struct input_dev *input;
212 	int id;
213 	int default_id;
214 	int original_handler_id;
215 	int current_handler_id;
216 	int mouse_kind;
217 	u16 *keycode;
218 	char name[64];
219 	char phys[32];
220 	int flags;
221 };
222 
223 #define FLAG_FN_KEY_PRESSED		0x00000001
224 #define FLAG_POWER_FROM_FN		0x00000002
225 #define FLAG_EMU_FWDEL_DOWN		0x00000004
226 #define FLAG_CAPSLOCK_TRANSLATE		0x00000008
227 #define FLAG_CAPSLOCK_DOWN		0x00000010
228 #define FLAG_CAPSLOCK_IGNORE_NEXT	0x00000020
229 #define FLAG_POWER_KEY_PRESSED		0x00000040
230 
231 static struct adbhid *adbhid[16];
232 
233 static void adbhid_probe(void);
234 
235 static void adbhid_input_keycode(int, int, int);
236 
237 static void init_trackpad(int id);
238 static void init_trackball(int id);
239 static void init_turbomouse(int id);
240 static void init_microspeed(int id);
241 static void init_ms_a3(int id);
242 
243 static struct adb_ids keyboard_ids;
244 static struct adb_ids mouse_ids;
245 static struct adb_ids buttons_ids;
246 
247 /* Kind of keyboard, see Apple technote 1152  */
248 #define ADB_KEYBOARD_UNKNOWN	0
249 #define ADB_KEYBOARD_ANSI	0x0100
250 #define ADB_KEYBOARD_ISO	0x0200
251 #define ADB_KEYBOARD_JIS	0x0300
252 
253 /* Kind of mouse  */
254 #define ADBMOUSE_STANDARD_100	0	/* Standard 100cpi mouse (handler 1) */
255 #define ADBMOUSE_STANDARD_200	1	/* Standard 200cpi mouse (handler 2) */
256 #define ADBMOUSE_EXTENDED	2	/* Apple Extended mouse (handler 4) */
257 #define ADBMOUSE_TRACKBALL	3	/* TrackBall (handler 4) */
258 #define ADBMOUSE_TRACKPAD       4	/* Apple's PowerBook trackpad (handler 4) */
259 #define ADBMOUSE_TURBOMOUSE5    5	/* Turbomouse 5 (previously req. mousehack) */
260 #define ADBMOUSE_MICROSPEED	6	/* Microspeed mouse (&trackball ?), MacPoint */
261 #define ADBMOUSE_TRACKBALLPRO	7	/* Trackball Pro (special buttons) */
262 #define ADBMOUSE_MS_A3		8	/* Mouse systems A3 trackball (handler 3) */
263 #define ADBMOUSE_MACALLY2	9	/* MacAlly 2-button mouse */
264 
265 static void
266 adbhid_keyboard_input(unsigned char *data, int nb, int apoll)
267 {
268 	int id = (data[0] >> 4) & 0x0f;
269 
270 	if (!adbhid[id]) {
271 		printk(KERN_ERR "ADB HID on ID %d not yet registered, packet %#02x, %#02x, %#02x, %#02x\n",
272 		       id, data[0], data[1], data[2], data[3]);
273 		return;
274 	}
275 
276 	/* first check this is from register 0 */
277 	if (nb != 3 || (data[0] & 3) != KEYB_KEYREG)
278 		return;		/* ignore it */
279 	adbhid_input_keycode(id, data[1], 0);
280 	if (!(data[2] == 0xff || (data[2] == 0x7f && data[1] == 0x7f)))
281 		adbhid_input_keycode(id, data[2], 0);
282 }
283 
284 static void
285 adbhid_input_keycode(int id, int scancode, int repeat)
286 {
287 	struct adbhid *ahid = adbhid[id];
288 	int keycode, up_flag, key;
289 
290 	keycode = scancode & 0x7f;
291 	up_flag = scancode & 0x80;
292 
293 	if (restore_capslock_events) {
294 		if (keycode == ADB_KEY_CAPSLOCK && !up_flag) {
295 			/* Key pressed, turning on the CapsLock LED.
296 			 * The next 0xff will be interpreted as a release. */
297 			if (ahid->flags & FLAG_CAPSLOCK_IGNORE_NEXT) {
298 				/* Throw away this key event if it happens
299 				 * just after resume. */
300 				ahid->flags &= ~FLAG_CAPSLOCK_IGNORE_NEXT;
301 				return;
302 			} else {
303 				ahid->flags |= FLAG_CAPSLOCK_TRANSLATE
304 					| FLAG_CAPSLOCK_DOWN;
305 			}
306 		} else if (scancode == 0xff &&
307 			   !(ahid->flags & FLAG_POWER_KEY_PRESSED)) {
308 			/* Scancode 0xff usually signifies that the capslock
309 			 * key was either pressed or released, or that the
310 			 * power button was released. */
311 			if (ahid->flags & FLAG_CAPSLOCK_TRANSLATE) {
312 				keycode = ADB_KEY_CAPSLOCK;
313 				if (ahid->flags & FLAG_CAPSLOCK_DOWN) {
314 					/* Key released */
315 					up_flag = 1;
316 					ahid->flags &= ~FLAG_CAPSLOCK_DOWN;
317 				} else {
318 					/* Key pressed */
319 					up_flag = 0;
320 					ahid->flags &= ~FLAG_CAPSLOCK_TRANSLATE;
321 				}
322 			} else {
323 				printk(KERN_INFO "Spurious caps lock event "
324 						 "(scancode 0xff).\n");
325 			}
326 		}
327 	}
328 
329 	switch (keycode) {
330 	case ADB_KEY_CAPSLOCK:
331 		if (!restore_capslock_events) {
332 			/* Generate down/up events for CapsLock every time. */
333 			input_report_key(ahid->input, KEY_CAPSLOCK, 1);
334 			input_sync(ahid->input);
335 			input_report_key(ahid->input, KEY_CAPSLOCK, 0);
336 			input_sync(ahid->input);
337 			return;
338 		}
339 		break;
340 #ifdef CONFIG_PPC_PMAC
341 	case ADB_KEY_POWER_OLD: /* Power key on PBook 3400 needs remapping */
342 		switch(pmac_call_feature(PMAC_FTR_GET_MB_INFO,
343 			NULL, PMAC_MB_INFO_MODEL, 0)) {
344 		case PMAC_TYPE_COMET:
345 		case PMAC_TYPE_HOOPER:
346 		case PMAC_TYPE_KANGA:
347 			keycode = ADB_KEY_POWER;
348 		}
349 		break;
350 	case ADB_KEY_POWER:
351 		/* Keep track of the power key state */
352 		if (up_flag)
353 			ahid->flags &= ~FLAG_POWER_KEY_PRESSED;
354 		else
355 			ahid->flags |= FLAG_POWER_KEY_PRESSED;
356 
357 		/* Fn + Command will produce a bogus "power" keycode */
358 		if (ahid->flags & FLAG_FN_KEY_PRESSED) {
359 			keycode = ADB_KEY_CMD;
360 			if (up_flag)
361 				ahid->flags &= ~FLAG_POWER_FROM_FN;
362 			else
363 				ahid->flags |= FLAG_POWER_FROM_FN;
364 		} else if (ahid->flags & FLAG_POWER_FROM_FN) {
365 			keycode = ADB_KEY_CMD;
366 			ahid->flags &= ~FLAG_POWER_FROM_FN;
367 		}
368 		break;
369 	case ADB_KEY_FN:
370 		/* Keep track of the Fn key state */
371 		if (up_flag) {
372 			ahid->flags &= ~FLAG_FN_KEY_PRESSED;
373 			/* Emulate Fn+delete = forward delete */
374 			if (ahid->flags & FLAG_EMU_FWDEL_DOWN) {
375 				ahid->flags &= ~FLAG_EMU_FWDEL_DOWN;
376 				keycode = ADB_KEY_FWDEL;
377 				break;
378 			}
379 		} else
380 			ahid->flags |= FLAG_FN_KEY_PRESSED;
381 		break;
382 	case ADB_KEY_DEL:
383 		/* Emulate Fn+delete = forward delete */
384 		if (ahid->flags & FLAG_FN_KEY_PRESSED) {
385 			keycode = ADB_KEY_FWDEL;
386 			if (up_flag)
387 				ahid->flags &= ~FLAG_EMU_FWDEL_DOWN;
388 			else
389 				ahid->flags |= FLAG_EMU_FWDEL_DOWN;
390 		}
391 		break;
392 #endif /* CONFIG_PPC_PMAC */
393 	}
394 
395 	key = adbhid[id]->keycode[keycode];
396 	if (key) {
397 		input_report_key(adbhid[id]->input, key, !up_flag);
398 		input_sync(adbhid[id]->input);
399 	} else
400 		printk(KERN_INFO "Unhandled ADB key (scancode %#02x) %s.\n", keycode,
401 		       up_flag ? "released" : "pressed");
402 
403 }
404 
405 static void
406 adbhid_mouse_input(unsigned char *data, int nb, int autopoll)
407 {
408 	int id = (data[0] >> 4) & 0x0f;
409 
410 	if (!adbhid[id]) {
411 		printk(KERN_ERR "ADB HID on ID %d not yet registered\n", id);
412 		return;
413 	}
414 
415   /*
416     Handler 1 -- 100cpi original Apple mouse protocol.
417     Handler 2 -- 200cpi original Apple mouse protocol.
418 
419     For Apple's standard one-button mouse protocol the data array will
420     contain the following values:
421 
422                 BITS    COMMENTS
423     data[0] = dddd 1100 ADB command: Talk, register 0, for device dddd.
424     data[1] = bxxx xxxx First button and x-axis motion.
425     data[2] = byyy yyyy Second button and y-axis motion.
426 
427     Handler 4 -- Apple Extended mouse protocol.
428 
429     For Apple's 3-button mouse protocol the data array will contain the
430     following values:
431 
432 		BITS    COMMENTS
433     data[0] = dddd 1100 ADB command: Talk, register 0, for device dddd.
434     data[1] = bxxx xxxx Left button and x-axis motion.
435     data[2] = byyy yyyy Second button and y-axis motion.
436     data[3] = byyy bxxx Third button and fourth button.  Y is additional
437 	      high bits of y-axis motion.  XY is additional
438 	      high bits of x-axis motion.
439 
440     MacAlly 2-button mouse protocol.
441 
442     For MacAlly 2-button mouse protocol the data array will contain the
443     following values:
444 
445 		BITS    COMMENTS
446     data[0] = dddd 1100 ADB command: Talk, register 0, for device dddd.
447     data[1] = bxxx xxxx Left button and x-axis motion.
448     data[2] = byyy yyyy Right button and y-axis motion.
449     data[3] = ???? ???? unknown
450     data[4] = ???? ???? unknown
451 
452   */
453 
454 	/* If it's a trackpad, we alias the second button to the first.
455 	   NOTE: Apple sends an ADB flush command to the trackpad when
456 	         the first (the real) button is released. We could do
457 		 this here using async flush requests.
458 	*/
459 	switch (adbhid[id]->mouse_kind)
460 	{
461 	    case ADBMOUSE_TRACKPAD:
462 		data[1] = (data[1] & 0x7f) | ((data[1] & data[2]) & 0x80);
463 		data[2] = data[2] | 0x80;
464 		break;
465 	    case ADBMOUSE_MICROSPEED:
466 		data[1] = (data[1] & 0x7f) | ((data[3] & 0x01) << 7);
467 		data[2] = (data[2] & 0x7f) | ((data[3] & 0x02) << 6);
468 		data[3] = (data[3] & 0x77) | ((data[3] & 0x04) << 5)
469 			| (data[3] & 0x08);
470 		break;
471 	    case ADBMOUSE_TRACKBALLPRO:
472 		data[1] = (data[1] & 0x7f) | (((data[3] & 0x04) << 5)
473 			& ((data[3] & 0x08) << 4));
474 		data[2] = (data[2] & 0x7f) | ((data[3] & 0x01) << 7);
475 		data[3] = (data[3] & 0x77) | ((data[3] & 0x02) << 6);
476 		break;
477 	    case ADBMOUSE_MS_A3:
478 		data[1] = (data[1] & 0x7f) | ((data[3] & 0x01) << 7);
479 		data[2] = (data[2] & 0x7f) | ((data[3] & 0x02) << 6);
480 		data[3] = ((data[3] & 0x04) << 5);
481 		break;
482             case ADBMOUSE_MACALLY2:
483 		data[3] = (data[2] & 0x80) ? 0x80 : 0x00;
484 		data[2] |= 0x80;  /* Right button is mapped as button 3 */
485 		nb=4;
486                 break;
487 	}
488 
489 	input_report_key(adbhid[id]->input, BTN_LEFT,   !((data[1] >> 7) & 1));
490 	input_report_key(adbhid[id]->input, BTN_MIDDLE, !((data[2] >> 7) & 1));
491 
492 	if (nb >= 4 && adbhid[id]->mouse_kind != ADBMOUSE_TRACKPAD)
493 		input_report_key(adbhid[id]->input, BTN_RIGHT,  !((data[3] >> 7) & 1));
494 
495 	input_report_rel(adbhid[id]->input, REL_X,
496 			 ((data[2]&0x7f) < 64 ? (data[2]&0x7f) : (data[2]&0x7f)-128 ));
497 	input_report_rel(adbhid[id]->input, REL_Y,
498 			 ((data[1]&0x7f) < 64 ? (data[1]&0x7f) : (data[1]&0x7f)-128 ));
499 
500 	input_sync(adbhid[id]->input);
501 }
502 
503 static void
504 adbhid_buttons_input(unsigned char *data, int nb, int autopoll)
505 {
506 	int id = (data[0] >> 4) & 0x0f;
507 
508 	if (!adbhid[id]) {
509 		printk(KERN_ERR "ADB HID on ID %d not yet registered\n", id);
510 		return;
511 	}
512 
513 	switch (adbhid[id]->original_handler_id) {
514 	default:
515 	case 0x02: /* Adjustable keyboard button device */
516 	  {
517 		int down = (data[1] == (data[1] & 0xf));
518 
519 		switch (data[1] & 0x0f) {
520 		case 0x0:	/* microphone */
521 			input_report_key(adbhid[id]->input, KEY_SOUND, down);
522 			break;
523 
524 		case 0x1:	/* mute */
525 			input_report_key(adbhid[id]->input, KEY_MUTE, down);
526 			break;
527 
528 		case 0x2:	/* volume decrease */
529 			input_report_key(adbhid[id]->input, KEY_VOLUMEDOWN, down);
530 			break;
531 
532 		case 0x3:	/* volume increase */
533 			input_report_key(adbhid[id]->input, KEY_VOLUMEUP, down);
534 			break;
535 
536 		default:
537 			printk(KERN_INFO "Unhandled ADB_MISC event %02x, %02x, %02x, %02x\n",
538 			       data[0], data[1], data[2], data[3]);
539 			break;
540 		}
541 	  }
542 	  break;
543 
544 	case 0x1f: /* Powerbook button device */
545 	  {
546 		int down = (data[1] == (data[1] & 0xf));
547 
548 		/*
549 		 * XXX: Where is the contrast control for the passive?
550 		 *  -- Cort
551 		 */
552 
553 		switch (data[1] & 0x0f) {
554 		case 0x8:	/* mute */
555 			input_report_key(adbhid[id]->input, KEY_MUTE, down);
556 			break;
557 
558 		case 0x7:	/* volume decrease */
559 			input_report_key(adbhid[id]->input, KEY_VOLUMEDOWN, down);
560 			break;
561 
562 		case 0x6:	/* volume increase */
563 			input_report_key(adbhid[id]->input, KEY_VOLUMEUP, down);
564 			break;
565 
566 		case 0xb:	/* eject */
567 			input_report_key(adbhid[id]->input, KEY_EJECTCD, down);
568 			break;
569 
570 		case 0xa:	/* brightness decrease */
571 #ifdef CONFIG_PMAC_BACKLIGHT
572 			if (down)
573 				pmac_backlight_key_down();
574 #endif
575 			input_report_key(adbhid[id]->input, KEY_BRIGHTNESSDOWN, down);
576 			break;
577 
578 		case 0x9:	/* brightness increase */
579 #ifdef CONFIG_PMAC_BACKLIGHT
580 			if (down)
581 				pmac_backlight_key_up();
582 #endif
583 			input_report_key(adbhid[id]->input, KEY_BRIGHTNESSUP, down);
584 			break;
585 
586 		case 0xc:	/* videomode switch */
587 			input_report_key(adbhid[id]->input, KEY_SWITCHVIDEOMODE, down);
588 			break;
589 
590 		case 0xd:	/* keyboard illumination toggle */
591 			input_report_key(adbhid[id]->input, KEY_KBDILLUMTOGGLE, down);
592 			break;
593 
594 		case 0xe:	/* keyboard illumination decrease */
595 			input_report_key(adbhid[id]->input, KEY_KBDILLUMDOWN, down);
596 			break;
597 
598 		case 0xf:
599 			switch (data[1]) {
600 			case 0x8f:
601 			case 0x0f:
602 				/* keyboard illumination increase */
603 				input_report_key(adbhid[id]->input, KEY_KBDILLUMUP, down);
604 				break;
605 
606 			case 0x7f:
607 			case 0xff:
608 				/* keypad overlay toogle */
609 				break;
610 
611 			default:
612 				printk(KERN_INFO "Unhandled ADB_MISC event %02x, %02x, %02x, %02x\n",
613 				       data[0], data[1], data[2], data[3]);
614 				break;
615 			}
616 			break;
617 		default:
618 			printk(KERN_INFO "Unhandled ADB_MISC event %02x, %02x, %02x, %02x\n",
619 			       data[0], data[1], data[2], data[3]);
620 			break;
621 		}
622 	  }
623 	  break;
624 	}
625 
626 	input_sync(adbhid[id]->input);
627 }
628 
629 static struct adb_request led_request;
630 static int leds_pending[16];
631 static int leds_req_pending;
632 static int pending_devs[16];
633 static int pending_led_start;
634 static int pending_led_end;
635 static DEFINE_SPINLOCK(leds_lock);
636 
637 static void leds_done(struct adb_request *req)
638 {
639 	int leds = 0, device = 0, pending = 0;
640 	unsigned long flags;
641 
642 	spin_lock_irqsave(&leds_lock, flags);
643 
644 	if (pending_led_start != pending_led_end) {
645 		device = pending_devs[pending_led_start];
646 		leds = leds_pending[device] & 0xff;
647 		leds_pending[device] = 0;
648 		pending_led_start++;
649 		pending_led_start = (pending_led_start < 16) ? pending_led_start : 0;
650 		pending = leds_req_pending;
651 	} else
652 		leds_req_pending = 0;
653 	spin_unlock_irqrestore(&leds_lock, flags);
654 	if (pending)
655 		adb_request(&led_request, leds_done, 0, 3,
656 			    ADB_WRITEREG(device, KEYB_LEDREG), 0xff, ~leds);
657 }
658 
659 static void real_leds(unsigned char leds, int device)
660 {
661 	unsigned long flags;
662 
663 	spin_lock_irqsave(&leds_lock, flags);
664 	if (!leds_req_pending) {
665 		leds_req_pending = 1;
666 		spin_unlock_irqrestore(&leds_lock, flags);
667 		adb_request(&led_request, leds_done, 0, 3,
668 			    ADB_WRITEREG(device, KEYB_LEDREG), 0xff, ~leds);
669 		return;
670 	} else {
671 		if (!(leds_pending[device] & 0x100)) {
672 			pending_devs[pending_led_end] = device;
673 			pending_led_end++;
674 			pending_led_end = (pending_led_end < 16) ? pending_led_end : 0;
675 		}
676 		leds_pending[device] = leds | 0x100;
677 	}
678 	spin_unlock_irqrestore(&leds_lock, flags);
679 }
680 
681 /*
682  * Event callback from the input module. Events that change the state of
683  * the hardware are processed here.
684  */
685 static int adbhid_kbd_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
686 {
687 	struct adbhid *adbhid = input_get_drvdata(dev);
688 	unsigned char leds;
689 
690 	switch (type) {
691 	case EV_LED:
692 		leds =  (test_bit(LED_SCROLLL, dev->led) ? 4 : 0) |
693 			(test_bit(LED_NUML,    dev->led) ? 1 : 0) |
694 			(test_bit(LED_CAPSL,   dev->led) ? 2 : 0);
695 		real_leds(leds, adbhid->id);
696 		return 0;
697 	}
698 
699 	return -1;
700 }
701 
702 static void
703 adbhid_kbd_capslock_remember(void)
704 {
705 	struct adbhid *ahid;
706 	int i;
707 
708 	for (i = 1; i < 16; i++) {
709 		ahid = adbhid[i];
710 
711 		if (ahid && ahid->id == ADB_KEYBOARD)
712 			if (ahid->flags & FLAG_CAPSLOCK_TRANSLATE)
713 				ahid->flags |= FLAG_CAPSLOCK_IGNORE_NEXT;
714 	}
715 }
716 
717 static int
718 adb_message_handler(struct notifier_block *this, unsigned long code, void *x)
719 {
720 	switch (code) {
721 	case ADB_MSG_PRE_RESET:
722 	case ADB_MSG_POWERDOWN:
723 		/* Stop the repeat timer. Autopoll is already off at this point */
724 		{
725 			int i;
726 			for (i = 1; i < 16; i++) {
727 				if (adbhid[i])
728 					del_timer_sync(&adbhid[i]->input->timer);
729 			}
730 		}
731 
732 		/* Stop pending led requests */
733 		while (leds_req_pending)
734 			adb_poll();
735 
736 		/* After resume, and if the capslock LED is on, the PMU will
737 		 * send a "capslock down" key event. This confuses the
738 		 * restore_capslock_events logic. Remember if the capslock
739 		 * LED was on before suspend so the unwanted key event can
740 		 * be ignored after resume. */
741 		if (restore_capslock_events)
742 			adbhid_kbd_capslock_remember();
743 
744 		break;
745 
746 	case ADB_MSG_POST_RESET:
747 		adbhid_probe();
748 		break;
749 	}
750 	return NOTIFY_DONE;
751 }
752 
753 static int
754 adbhid_input_register(int id, int default_id, int original_handler_id,
755 		      int current_handler_id, int mouse_kind)
756 {
757 	struct adbhid *hid;
758 	struct input_dev *input_dev;
759 	int err;
760 	int i;
761 
762 	if (adbhid[id]) {
763 		printk(KERN_ERR "Trying to reregister ADB HID on ID %d\n", id);
764 		return -EEXIST;
765 	}
766 
767 	adbhid[id] = hid = kzalloc(sizeof(struct adbhid), GFP_KERNEL);
768 	input_dev = input_allocate_device();
769 	if (!hid || !input_dev) {
770 		err = -ENOMEM;
771 		goto fail;
772 	}
773 
774 	sprintf(hid->phys, "adb%d:%d.%02x/input", id, default_id, original_handler_id);
775 
776 	hid->input = input_dev;
777 	hid->id = default_id;
778 	hid->original_handler_id = original_handler_id;
779 	hid->current_handler_id = current_handler_id;
780 	hid->mouse_kind = mouse_kind;
781 	hid->flags = 0;
782 	input_set_drvdata(input_dev, hid);
783 	input_dev->name = hid->name;
784 	input_dev->phys = hid->phys;
785 	input_dev->id.bustype = BUS_ADB;
786 	input_dev->id.vendor = 0x0001;
787 	input_dev->id.product = (id << 12) | (default_id << 8) | original_handler_id;
788 	input_dev->id.version = 0x0100;
789 
790 	switch (default_id) {
791 	case ADB_KEYBOARD:
792 		hid->keycode = kmalloc(sizeof(adb_to_linux_keycodes), GFP_KERNEL);
793 		if (!hid->keycode) {
794 			err = -ENOMEM;
795 			goto fail;
796 		}
797 
798 		sprintf(hid->name, "ADB keyboard");
799 
800 		memcpy(hid->keycode, adb_to_linux_keycodes, sizeof(adb_to_linux_keycodes));
801 
802 		printk(KERN_INFO "Detected ADB keyboard, type ");
803 		switch (original_handler_id) {
804 		default:
805 			printk("<unknown>.\n");
806 			input_dev->id.version = ADB_KEYBOARD_UNKNOWN;
807 			break;
808 
809 		case 0x01: case 0x02: case 0x03: case 0x06: case 0x08:
810 		case 0x0C: case 0x10: case 0x18: case 0x1B: case 0x1C:
811 		case 0xC0: case 0xC3: case 0xC6:
812 			printk("ANSI.\n");
813 			input_dev->id.version = ADB_KEYBOARD_ANSI;
814 			break;
815 
816 		case 0x04: case 0x05: case 0x07: case 0x09: case 0x0D:
817 		case 0x11: case 0x14: case 0x19: case 0x1D: case 0xC1:
818 		case 0xC4: case 0xC7:
819 			printk("ISO, swapping keys.\n");
820 			input_dev->id.version = ADB_KEYBOARD_ISO;
821 			i = hid->keycode[10];
822 			hid->keycode[10] = hid->keycode[50];
823 			hid->keycode[50] = i;
824 			break;
825 
826 		case 0x12: case 0x15: case 0x16: case 0x17: case 0x1A:
827 		case 0x1E: case 0xC2: case 0xC5: case 0xC8: case 0xC9:
828 			printk("JIS.\n");
829 			input_dev->id.version = ADB_KEYBOARD_JIS;
830 			break;
831 		}
832 
833 		for (i = 0; i < 128; i++)
834 			if (hid->keycode[i])
835 				set_bit(hid->keycode[i], input_dev->keybit);
836 
837 		input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_LED) |
838 			BIT_MASK(EV_REP);
839 		input_dev->ledbit[0] = BIT_MASK(LED_SCROLLL) |
840 			BIT_MASK(LED_CAPSL) | BIT_MASK(LED_NUML);
841 		input_dev->event = adbhid_kbd_event;
842 		input_dev->keycodemax = KEY_FN;
843 		input_dev->keycodesize = sizeof(hid->keycode[0]);
844 		break;
845 
846 	case ADB_MOUSE:
847 		sprintf(hid->name, "ADB mouse");
848 
849 		input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
850 		input_dev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) |
851 			BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
852 		input_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
853 		break;
854 
855 	case ADB_MISC:
856 		switch (original_handler_id) {
857 		case 0x02: /* Adjustable keyboard button device */
858 			sprintf(hid->name, "ADB adjustable keyboard buttons");
859 			input_dev->evbit[0] = BIT_MASK(EV_KEY) |
860 				BIT_MASK(EV_REP);
861 			set_bit(KEY_SOUND, input_dev->keybit);
862 			set_bit(KEY_MUTE, input_dev->keybit);
863 			set_bit(KEY_VOLUMEUP, input_dev->keybit);
864 			set_bit(KEY_VOLUMEDOWN, input_dev->keybit);
865 			break;
866 		case 0x1f: /* Powerbook button device */
867 			sprintf(hid->name, "ADB Powerbook buttons");
868 			input_dev->evbit[0] = BIT_MASK(EV_KEY) |
869 				BIT_MASK(EV_REP);
870 			set_bit(KEY_MUTE, input_dev->keybit);
871 			set_bit(KEY_VOLUMEUP, input_dev->keybit);
872 			set_bit(KEY_VOLUMEDOWN, input_dev->keybit);
873 			set_bit(KEY_BRIGHTNESSUP, input_dev->keybit);
874 			set_bit(KEY_BRIGHTNESSDOWN, input_dev->keybit);
875 			set_bit(KEY_EJECTCD, input_dev->keybit);
876 			set_bit(KEY_SWITCHVIDEOMODE, input_dev->keybit);
877 			set_bit(KEY_KBDILLUMTOGGLE, input_dev->keybit);
878 			set_bit(KEY_KBDILLUMDOWN, input_dev->keybit);
879 			set_bit(KEY_KBDILLUMUP, input_dev->keybit);
880 			break;
881 		}
882 		if (hid->name[0])
883 			break;
884 		/* else fall through */
885 
886 	default:
887 		printk(KERN_INFO "Trying to register unknown ADB device to input layer.\n");
888 		err = -ENODEV;
889 		goto fail;
890 	}
891 
892 	input_dev->keycode = hid->keycode;
893 
894 	err = input_register_device(input_dev);
895 	if (err)
896 		goto fail;
897 
898 	if (default_id == ADB_KEYBOARD) {
899 		/* HACK WARNING!! This should go away as soon there is an utility
900 		 * to control that for event devices.
901 		 */
902 		input_dev->rep[REP_DELAY] = 500;   /* input layer default: 250 */
903 		input_dev->rep[REP_PERIOD] = 66; /* input layer default: 33 */
904 	}
905 
906 	return 0;
907 
908  fail:	input_free_device(input_dev);
909 	if (hid) {
910 		kfree(hid->keycode);
911 		kfree(hid);
912 	}
913 	adbhid[id] = NULL;
914 	return err;
915 }
916 
917 static void adbhid_input_unregister(int id)
918 {
919 	input_unregister_device(adbhid[id]->input);
920 	kfree(adbhid[id]->keycode);
921 	kfree(adbhid[id]);
922 	adbhid[id] = NULL;
923 }
924 
925 
926 static u16
927 adbhid_input_reregister(int id, int default_id, int org_handler_id,
928 			int cur_handler_id, int mk)
929 {
930 	if (adbhid[id]) {
931 		if (adbhid[id]->input->id.product !=
932 		    ((id << 12)|(default_id << 8)|org_handler_id)) {
933 			adbhid_input_unregister(id);
934 			adbhid_input_register(id, default_id, org_handler_id,
935 					      cur_handler_id, mk);
936 		}
937 	} else
938 		adbhid_input_register(id, default_id, org_handler_id,
939 				      cur_handler_id, mk);
940 	return 1<<id;
941 }
942 
943 static void
944 adbhid_input_devcleanup(u16 exist)
945 {
946 	int i;
947 	for(i=1; i<16; i++)
948 		if (adbhid[i] && !(exist&(1<<i)))
949 			adbhid_input_unregister(i);
950 }
951 
952 static void
953 adbhid_probe(void)
954 {
955 	struct adb_request req;
956 	int i, default_id, org_handler_id, cur_handler_id;
957 	u16 reg = 0;
958 
959 	adb_register(ADB_MOUSE, 0, &mouse_ids, adbhid_mouse_input);
960 	adb_register(ADB_KEYBOARD, 0, &keyboard_ids, adbhid_keyboard_input);
961 	adb_register(ADB_MISC, 0, &buttons_ids, adbhid_buttons_input);
962 
963 	for (i = 0; i < keyboard_ids.nids; i++) {
964 		int id = keyboard_ids.id[i];
965 
966 		adb_get_infos(id, &default_id, &org_handler_id);
967 
968 		/* turn off all leds */
969 		adb_request(&req, NULL, ADBREQ_SYNC, 3,
970 			    ADB_WRITEREG(id, KEYB_LEDREG), 0xff, 0xff);
971 
972 		/* Enable full feature set of the keyboard
973 		   ->get it to send separate codes for left and right shift,
974 		   control, option keys */
975 #if 0		/* handler 5 doesn't send separate codes for R modifiers */
976 		if (adb_try_handler_change(id, 5))
977 			printk("ADB keyboard at %d, handler set to 5\n", id);
978 		else
979 #endif
980 		if (adb_try_handler_change(id, 3))
981 			printk("ADB keyboard at %d, handler set to 3\n", id);
982 		else
983 			printk("ADB keyboard at %d, handler 1\n", id);
984 
985 		adb_get_infos(id, &default_id, &cur_handler_id);
986 		reg |= adbhid_input_reregister(id, default_id, org_handler_id,
987 					       cur_handler_id, 0);
988 	}
989 
990 	for (i = 0; i < buttons_ids.nids; i++) {
991 		int id = buttons_ids.id[i];
992 
993 		adb_get_infos(id, &default_id, &org_handler_id);
994 		reg |= adbhid_input_reregister(id, default_id, org_handler_id,
995 					       org_handler_id, 0);
996 	}
997 
998 	/* Try to switch all mice to handler 4, or 2 for three-button
999 	   mode and full resolution. */
1000 	for (i = 0; i < mouse_ids.nids; i++) {
1001 		int id = mouse_ids.id[i];
1002 		int mouse_kind;
1003 
1004 		adb_get_infos(id, &default_id, &org_handler_id);
1005 
1006 		if (adb_try_handler_change(id, 4)) {
1007 			printk("ADB mouse at %d, handler set to 4", id);
1008 			mouse_kind = ADBMOUSE_EXTENDED;
1009 		}
1010 		else if (adb_try_handler_change(id, 0x2F)) {
1011 			printk("ADB mouse at %d, handler set to 0x2F", id);
1012 			mouse_kind = ADBMOUSE_MICROSPEED;
1013 		}
1014 		else if (adb_try_handler_change(id, 0x42)) {
1015 			printk("ADB mouse at %d, handler set to 0x42", id);
1016 			mouse_kind = ADBMOUSE_TRACKBALLPRO;
1017 		}
1018 		else if (adb_try_handler_change(id, 0x66)) {
1019 			printk("ADB mouse at %d, handler set to 0x66", id);
1020 			mouse_kind = ADBMOUSE_MICROSPEED;
1021 		}
1022 		else if (adb_try_handler_change(id, 0x5F)) {
1023 			printk("ADB mouse at %d, handler set to 0x5F", id);
1024 			mouse_kind = ADBMOUSE_MICROSPEED;
1025 		}
1026 		else if (adb_try_handler_change(id, 3)) {
1027 			printk("ADB mouse at %d, handler set to 3", id);
1028 			mouse_kind = ADBMOUSE_MS_A3;
1029 		}
1030 		else if (adb_try_handler_change(id, 2)) {
1031 			printk("ADB mouse at %d, handler set to 2", id);
1032 			mouse_kind = ADBMOUSE_STANDARD_200;
1033 		}
1034 		else {
1035 			printk("ADB mouse at %d, handler 1", id);
1036 			mouse_kind = ADBMOUSE_STANDARD_100;
1037 		}
1038 
1039 		if ((mouse_kind == ADBMOUSE_TRACKBALLPRO)
1040 		    || (mouse_kind == ADBMOUSE_MICROSPEED)) {
1041 			init_microspeed(id);
1042 		} else if (mouse_kind == ADBMOUSE_MS_A3) {
1043 			init_ms_a3(id);
1044 		} else if (mouse_kind ==  ADBMOUSE_EXTENDED) {
1045 			/*
1046 			 * Register 1 is usually used for device
1047 			 * identification.  Here, we try to identify
1048 			 * a known device and call the appropriate
1049 			 * init function.
1050 			 */
1051 			adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
1052 				    ADB_READREG(id, 1));
1053 
1054 			if ((req.reply_len) &&
1055 			    (req.reply[1] == 0x9a) && ((req.reply[2] == 0x21)
1056 			    	|| (req.reply[2] == 0x20))) {
1057 				mouse_kind = ADBMOUSE_TRACKBALL;
1058 				init_trackball(id);
1059 			}
1060 			else if ((req.reply_len >= 4) &&
1061 			    (req.reply[1] == 0x74) && (req.reply[2] == 0x70) &&
1062 			    (req.reply[3] == 0x61) && (req.reply[4] == 0x64)) {
1063 				mouse_kind = ADBMOUSE_TRACKPAD;
1064 				init_trackpad(id);
1065 			}
1066 			else if ((req.reply_len >= 4) &&
1067 			    (req.reply[1] == 0x4b) && (req.reply[2] == 0x4d) &&
1068 			    (req.reply[3] == 0x4c) && (req.reply[4] == 0x31)) {
1069 				mouse_kind = ADBMOUSE_TURBOMOUSE5;
1070 				init_turbomouse(id);
1071 			}
1072 			else if ((req.reply_len == 9) &&
1073 			    (req.reply[1] == 0x4b) && (req.reply[2] == 0x4f) &&
1074 			    (req.reply[3] == 0x49) && (req.reply[4] == 0x54)) {
1075 				if (adb_try_handler_change(id, 0x42)) {
1076 					printk("\nADB MacAlly 2-button mouse at %d, handler set to 0x42", id);
1077 					mouse_kind = ADBMOUSE_MACALLY2;
1078 				}
1079 			}
1080 		}
1081 		printk("\n");
1082 
1083 		adb_get_infos(id, &default_id, &cur_handler_id);
1084 		reg |= adbhid_input_reregister(id, default_id, org_handler_id,
1085 					       cur_handler_id, mouse_kind);
1086 	}
1087 	adbhid_input_devcleanup(reg);
1088 }
1089 
1090 static void
1091 init_trackpad(int id)
1092 {
1093 	struct adb_request req;
1094 	unsigned char r1_buffer[8];
1095 
1096 	printk(" (trackpad)");
1097 
1098 	adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
1099 		    ADB_READREG(id,1));
1100 	if (req.reply_len < 8)
1101 	    printk("bad length for reg. 1\n");
1102 	else
1103 	{
1104 	    memcpy(r1_buffer, &req.reply[1], 8);
1105 
1106 	    adb_request(&req, NULL, ADBREQ_SYNC, 9,
1107 	        ADB_WRITEREG(id,1),
1108 	            r1_buffer[0],
1109 	            r1_buffer[1],
1110 	            r1_buffer[2],
1111 	            r1_buffer[3],
1112 	            r1_buffer[4],
1113 	            r1_buffer[5],
1114 	            0x0d,
1115 	            r1_buffer[7]);
1116 
1117             adb_request(&req, NULL, ADBREQ_SYNC, 9,
1118 	        ADB_WRITEREG(id,2),
1119 	    	    0x99,
1120 	    	    0x94,
1121 	    	    0x19,
1122 	    	    0xff,
1123 	    	    0xb2,
1124 	    	    0x8a,
1125 	    	    0x1b,
1126 	    	    0x50);
1127 
1128 	    adb_request(&req, NULL, ADBREQ_SYNC, 9,
1129 	        ADB_WRITEREG(id,1),
1130 	            r1_buffer[0],
1131 	            r1_buffer[1],
1132 	            r1_buffer[2],
1133 	            r1_buffer[3],
1134 	            r1_buffer[4],
1135 	            r1_buffer[5],
1136 	            0x03, /*r1_buffer[6],*/
1137 	            r1_buffer[7]);
1138 
1139 	    /* Without this flush, the trackpad may be locked up */
1140 	    adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
1141         }
1142 }
1143 
1144 static void
1145 init_trackball(int id)
1146 {
1147 	struct adb_request req;
1148 
1149 	printk(" (trackman/mouseman)");
1150 
1151 	adb_request(&req, NULL, ADBREQ_SYNC, 3,
1152 	ADB_WRITEREG(id,1), 00,0x81);
1153 
1154 	adb_request(&req, NULL, ADBREQ_SYNC, 3,
1155 	ADB_WRITEREG(id,1), 01,0x81);
1156 
1157 	adb_request(&req, NULL, ADBREQ_SYNC, 3,
1158 	ADB_WRITEREG(id,1), 02,0x81);
1159 
1160 	adb_request(&req, NULL, ADBREQ_SYNC, 3,
1161 	ADB_WRITEREG(id,1), 03,0x38);
1162 
1163 	adb_request(&req, NULL, ADBREQ_SYNC, 3,
1164 	ADB_WRITEREG(id,1), 00,0x81);
1165 
1166 	adb_request(&req, NULL, ADBREQ_SYNC, 3,
1167 	ADB_WRITEREG(id,1), 01,0x81);
1168 
1169 	adb_request(&req, NULL, ADBREQ_SYNC, 3,
1170 	ADB_WRITEREG(id,1), 02,0x81);
1171 
1172 	adb_request(&req, NULL, ADBREQ_SYNC, 3,
1173 	ADB_WRITEREG(id,1), 03,0x38);
1174 }
1175 
1176 static void
1177 init_turbomouse(int id)
1178 {
1179 	struct adb_request req;
1180 
1181         printk(" (TurboMouse 5)");
1182 
1183 	adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
1184 
1185 	adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(3));
1186 
1187 	adb_request(&req, NULL, ADBREQ_SYNC, 9,
1188 	ADB_WRITEREG(3,2),
1189 	    0xe7,
1190 	    0x8c,
1191 	    0,
1192 	    0,
1193 	    0,
1194 	    0xff,
1195 	    0xff,
1196 	    0x94);
1197 
1198 	adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(3));
1199 
1200 	adb_request(&req, NULL, ADBREQ_SYNC, 9,
1201 	ADB_WRITEREG(3,2),
1202 	    0xa5,
1203 	    0x14,
1204 	    0,
1205 	    0,
1206 	    0x69,
1207 	    0xff,
1208 	    0xff,
1209 	    0x27);
1210 }
1211 
1212 static void
1213 init_microspeed(int id)
1214 {
1215 	struct adb_request req;
1216 
1217         printk(" (Microspeed/MacPoint or compatible)");
1218 
1219 	adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
1220 
1221 	/* This will initialize mice using the Microspeed, MacPoint and
1222 	   other compatible firmware. Bit 12 enables extended protocol.
1223 
1224 	   Register 1 Listen (4 Bytes)
1225             0 -  3     Button is mouse (set also for double clicking!!!)
1226             4 -  7     Button is locking (affects change speed also)
1227             8 - 11     Button changes speed
1228            12          1 = Extended mouse mode, 0 = normal mouse mode
1229            13 - 15     unused 0
1230            16 - 23     normal speed
1231            24 - 31     changed speed
1232 
1233        Register 1 talk holds version and product identification information.
1234        Register 1 Talk (4 Bytes):
1235             0 -  7     Product code
1236             8 - 23     undefined, reserved
1237            24 - 31     Version number
1238 
1239        Speed 0 is max. 1 to 255 set speed in increments of 1/256 of max.
1240  */
1241 	adb_request(&req, NULL, ADBREQ_SYNC, 5,
1242 	ADB_WRITEREG(id,1),
1243 	    0x20,	/* alt speed = 0x20 (rather slow) */
1244 	    0x00,	/* norm speed = 0x00 (fastest) */
1245 	    0x10,	/* extended protocol, no speed change */
1246 	    0x07);	/* all buttons enabled as mouse buttons, no locking */
1247 
1248 
1249 	adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
1250 }
1251 
1252 static void
1253 init_ms_a3(int id)
1254 {
1255 	struct adb_request req;
1256 
1257 	printk(" (Mouse Systems A3 Mouse, or compatible)");
1258 	adb_request(&req, NULL, ADBREQ_SYNC, 3,
1259 	ADB_WRITEREG(id, 0x2),
1260 	    0x00,
1261 	    0x07);
1262 
1263  	adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
1264 }
1265 
1266 static int __init adbhid_init(void)
1267 {
1268 #ifndef CONFIG_MAC
1269 	if (!machine_is(chrp) && !machine_is(powermac))
1270 		return 0;
1271 #endif
1272 
1273 	led_request.complete = 1;
1274 
1275 	adbhid_probe();
1276 
1277 	blocking_notifier_chain_register(&adb_client_list,
1278 			&adbhid_adb_notifier);
1279 
1280 	return 0;
1281 }
1282 
1283 static void __exit adbhid_exit(void)
1284 {
1285 }
1286 
1287 module_init(adbhid_init);
1288 module_exit(adbhid_exit);
1289