aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/macintosh/adbhid.c
blob: ef4c117ea35fde801a43eeea0d1dbf8aebc14190 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
/*
 * drivers/macintosh/adbhid.c
 *
 * ADB HID driver for Power Macintosh computers.
 *
 * Adapted from drivers/macintosh/mac_keyb.c by Franz Sirl.
 * drivers/macintosh/mac_keyb.c was Copyright (C) 1996 Paul Mackerras
 * with considerable contributions from Ben Herrenschmidt and others.
 *
 * Copyright (C) 2000 Franz Sirl.
 *
 * Adapted to ADB changes and support for more devices by
 * Benjamin Herrenschmidt. Adapted from code in MkLinux
 * and reworked.
 * 
 * Supported devices:
 *
 * - Standard 1 button mouse
 * - All standard Apple Extended protocol (handler ID 4)
 * - mouseman and trackman mice & trackballs 
 * - PowerBook Trackpad (default setup: enable tapping)
 * - MicroSpeed mouse & trackball (needs testing)
 * - CH Products Trackball Pro (needs testing)
 * - Contour Design (Contour Mouse)
 * - Hunter digital (NoHandsMouse)
 * - Kensignton TurboMouse 5 (needs testing)
 * - Mouse Systems A3 mice and trackballs <aidan@kublai.com>
 * - MacAlly 2-buttons mouse (needs testing) <pochini@denise.shiny.it>
 *
 * To do:
 *
 * Improve Kensington support.
 * Split mouse/kbd
 * Move to syfs
 */

#include <linux/module.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/notifier.h>
#include <linux/input.h>

#include <linux/adb.h>
#include <linux/cuda.h>
#include <linux/pmu.h>

#include <asm/machdep.h>
#ifdef CONFIG_PPC_PMAC
#include <asm/backlight.h>
#include <asm/pmac_feature.h>
#endif

MODULE_AUTHOR("Franz Sirl <Franz.Sirl-kernel@lauterbach.com>");

static int restore_capslock_events;
module_param(restore_capslock_events, int, 0644);
MODULE_PARM_DESC(restore_capslock_events,
	"Produce keypress events for capslock on both keyup and keydown.");

#define KEYB_KEYREG	0	/* register # for key up/down data */
#define KEYB_LEDREG	2	/* register # for leds on ADB keyboard */
#define MOUSE_DATAREG	0	/* reg# for movement/button codes from mouse */

static int adb_message_handler(struct notifier_block *, unsigned long, void *);
static struct notifier_block adbhid_adb_notifier = {
	.notifier_call	= adb_message_handler,
};

/* Some special keys */
#define ADB_KEY_DEL		0x33
#define ADB_KEY_CMD		0x37
#define ADB_KEY_CAPSLOCK	0x39
#define ADB_KEY_FN		0x3f
#define ADB_KEY_FWDEL		0x75
#define ADB_KEY_POWER_OLD	0x7e
#define ADB_KEY_POWER		0x7f

u16 adb_to_linux_keycodes[128] = {
	/* 0x00 */ KEY_A, 		/*  30 */
	/* 0x01 */ KEY_S, 		/*  31 */
	/* 0x02 */ KEY_D,		/*  32 */
	/* 0x03 */ KEY_F,		/*  33 */
	/* 0x04 */ KEY_H,		/*  35 */
	/* 0x05 */ KEY_G,		/*  34 */
	/* 0x06 */ KEY_Z,		/*  44 */
	/* 0x07 */ KEY_X,		/*  45 */
	/* 0x08 */ KEY_C,		/*  46 */
	/* 0x09 */ KEY_V,		/*  47 */
	/* 0x0a */ KEY_102ND,		/*  86 */
	/* 0x0b */ KEY_B,		/*  48 */
	/* 0x0c */ KEY_Q,		/*  16 */
	/* 0x0d */ KEY_W,		/*  17 */
	/* 0x0e */ KEY_E,		/*  18 */
	/* 0x0f */ KEY_R,		/*  19 */
	/* 0x10 */ KEY_Y,		/*  21 */
	/* 0x11 */ KEY_T,		/*  20 */
	/* 0x12 */ KEY_1,		/*   2 */
	/* 0x13 */ KEY_2,		/*   3 */
	/* 0x14 */ KEY_3,		/*   4 */
	/* 0x15 */ KEY_4,		/*   5 */
	/* 0x16 */ KEY_6,		/*   7 */
	/* 0x17 */ KEY_5,		/*   6 */
	/* 0x18 */ KEY_EQUAL,		/*  13 */
	/* 0x19 */ KEY_9,		/*  10 */
	/* 0x1a */ KEY_7,		/*   8 */
	/* 0x1b */ KEY_MINUS,		/*  12 */
	/* 0x1c */ KEY_8,		/*   9 */
	/* 0x1d */ KEY_0,		/*  11 */
	/* 0x1e */ KEY_RIGHTBRACE,	/*  27 */
	/* 0x1f */ KEY_O,		/*  24 */
	/* 0x20 */ KEY_U,		/*  22 */
	/* 0x21 */ KEY_LEFTBRACE,	/*  26 */
	/* 0x22 */ KEY_I,		/*  23 */
	/* 0x23 */ KEY_P,		/*  25 */
	/* 0x24 */ KEY_ENTER,		/*  28 */
	/* 0x25 */ KEY_L,		/*  38 */
	/* 0x26 */ KEY_J,		/*  36 */
	/* 0x27 */ KEY_APOSTROPHE,	/*  40 */
	/* 0x28 */ KEY_K,		/*  37 */
	/* 0x29 */ KEY_SEMICOLON,	/*  39 */
	/* 0x2a */ KEY_BACKSLASH,	/*  43 */
	/* 0x2b */ KEY_COMMA,		/*  51 */
	/* 0x2c */ KEY_SLASH,		/*  53 */
	/* 0x2d */ KEY_N,		/*  49 */
	/* 0x2e */ KEY_M,		/*  50 */
	/* 0x2f */ KEY_DOT,		/*  52 */
	/* 0x30 */ KEY_TAB,		/*  15 */
	/* 0x31 */ KEY_SPACE,		/*  57 */
	/* 0x32 */ KEY_GRAVE,		/*  41 */
	/* 0x33 */ KEY_BACKSPACE,	/*  14 */
	/* 0x34 */ KEY_KPENTER,		/*  96 */
	/* 0x35 */ KEY_ESC,		/*   1 */
	/* 0x36 */ KEY_LEFTCTRL,	/*  29 */
	/* 0x37 */ KEY_LEFTMETA,	/* 125 */
	/* 0x38 */ KEY_LEFTSHIFT,	/*  42 */
	/* 0x39 */ KEY_CAPSLOCK,	/*  58 */
	/* 0x3a */ KEY_LEFTALT,		/*  56 */
	/* 0x3b */ KEY_LEFT,		/* 105 */
	/* 0x3c */ KEY_RIGHT,		/* 106 */
	/* 0x3d */ KEY_DOWN,		/* 108 */
	/* 0x3e */ KEY_UP,		/* 103 */
	/* 0x3f */ KEY_FN,		/* 0x1d0 */
	/* 0x40 */ 0,
	/* 0x41 */ KEY_KPDOT,		/*  83 */
	/* 0x42 */ 0,
	/* 0x43 */ KEY_KPASTERISK,	/*  55 */
	/* 0x44 */ 0,
	/* 0x45 */ KEY_KPPLUS,		/*  78 */
	/* 0x46 */ 0,
	/* 0x47 */ KEY_NUMLOCK,		/*  69 */
	/* 0x48 */ 0,
	/* 0x49 */ 0,
	/* 0x4a */ 0,
	/* 0x4b */ KEY_KPSLASH,		/*  98 */
	/* 0x4c */ KEY_KPENTER,		/*  96 */
	/* 0x4d */ 0,
	/* 0x4e */ KEY_KPMINUS,		/*  74 */
	/* 0x4f */ 0,
	/* 0x50 */ 0,
	/* 0x51 */ KEY_KPEQUAL,		/* 117 */
	/* 0x52 */ KEY_KP0,		/*  82 */
	/* 0x53 */ KEY_KP1,		/*  79 */
	/* 0x54 */ KEY_KP2,		/*  80 */
	/* 0x55 */ KEY_KP3,		/*  81 */
	/* 0x56 */ KEY_KP4,		/*  75 */
	/* 0x57 */ KEY_KP5,		/*  76 */
	/* 0x58 */ KEY_KP6,		/*  77 */
	/* 0x59 */ KEY_KP7,		/*  71 */
	/* 0x5a */ 0,
	/* 0x5b */ KEY_KP8,		/*  72 */
	/* 0x5c */ KEY_KP9,		/*  73 */
	/* 0x5d */ KEY_YEN,		/* 124 */
	/* 0x5e */ KEY_RO,		/*  89 */
	/* 0x5f */ KEY_KPCOMMA,		/* 121 */
	/* 0x60 */ KEY_F5,		/*  63 */
	/* 0x61 */ KEY_F6,		/*  64 */
	/* 0x62 */ KEY_F7,		/*  65 */
	/* 0x63 */ KEY_F3,		/*  61 */
	/* 0x64 */ KEY_F8,		/*  66 */
	/* 0x65 */ KEY_F9,		/*  67 */
	/* 0x66 */ KEY_HANJA,		/* 123 */
	/* 0x67 */ KEY_F11,		/*  87 */
	/* 0x68 */ KEY_HANGEUL,		/* 122 */
	/* 0x69 */ KEY_SYSRQ,		/*  99 */
	/* 0x6a */ 0,
	/* 0x6b */ KEY_SCROLLLOCK,	/*  70 */
	/* 0x6c */ 0,
	/* 0x6d */ KEY_F10,		/*  68 */
	/* 0x6e */ KEY_COMPOSE,		/* 127 */
	/* 0x6f */ KEY_F12,		/*  88 */
	/* 0x70 */ 0,
	/* 0x71 */ KEY_PAUSE,		/* 119 */
	/* 0x72 */ KEY_INSERT,		/* 110 */
	/* 0x73 */ KEY_HOME,		/* 102 */
	/* 0x74 */ KEY_PAGEUP,		/* 104 */
	/* 0x75 */ KEY_DELETE,		/* 111 */
	/* 0x76 */ KEY_F4,		/*  62 */
	/* 0x77 */ KEY_END,		/* 107 */
	/* 0x78 */ KEY_F2,		/*  60 */
	/* 0x79 */ KEY_PAGEDOWN,	/* 109 */
	/* 0x7a */ KEY_F1,		/*  59 */
	/* 0x7b */ KEY_RIGHTSHIFT,	/*  54 */
	/* 0x7c */ KEY_RIGHTALT,	/* 100 */
	/* 0x7d */ KEY_RIGHTCTRL,	/*  97 */
	/* 0x7e */ KEY_RIGHTMETA,	/* 126 */
	/* 0x7f */ KEY_POWER,		/* 116 */
};

struct adbhid {
	struct input_dev *input;
	int id;
	int default_id;
	int original_handler_id;
	int current_handler_id;
	int mouse_kind;
	u16 *keycode;
	char name[64];
	char phys[32];
	int flags;
};

#define FLAG_FN_KEY_PRESSED	0x00000001
#define FLAG_POWER_FROM_FN	0x00000002
#define FLAG_EMU_FWDEL_DOWN	0x00000004
#define FLAG_CAPSLOCK_TRANSLATE	0x00000008
#define FLAG_CAPSLOCK_DOWN	0x00000010

static struct adbhid *adbhid[16];

static void adbhid_probe(void);

static void adbhid_input_keycode(int, int, int);

static void init_trackpad(int id);
static void init_trackball(int id);
static void init_turbomouse(int id);
static void init_microspeed(int id);
static void init_ms_a3(int id);

static struct adb_ids keyboard_ids;
static struct adb_ids mouse_ids;
static struct adb_ids buttons_ids;

/* Kind of keyboard, see Apple technote 1152  */
#define ADB_KEYBOARD_UNKNOWN	0
#define ADB_KEYBOARD_ANSI	0x0100
#define ADB_KEYBOARD_ISO	0x0200
#define ADB_KEYBOARD_JIS	0x0300

/* Kind of mouse  */
#define ADBMOUSE_STANDARD_100	0	/* Standard 100cpi mouse (handler 1) */
#define ADBMOUSE_STANDARD_200	1	/* Standard 200cpi mouse (handler 2) */
#define ADBMOUSE_EXTENDED	2	/* Apple Extended mouse (handler 4) */
#define ADBMOUSE_TRACKBALL	3	/* TrackBall (handler 4) */
#define ADBMOUSE_TRACKPAD       4	/* Apple's PowerBook trackpad (handler 4) */
#define ADBMOUSE_TURBOMOUSE5    5	/* Turbomouse 5 (previously req. mousehack) */
#define ADBMOUSE_MICROSPEED	6	/* Microspeed mouse (&trackball ?), MacPoint */
#define ADBMOUSE_TRACKBALLPRO	7	/* Trackball Pro (special buttons) */
#define ADBMOUSE_MS_A3		8	/* Mouse systems A3 trackball (handler 3) */
#define ADBMOUSE_MACALLY2	9	/* MacAlly 2-button mouse */

static void
adbhid_keyboard_input(unsigned char *data, int nb, int apoll)
{
	int id = (data[0] >> 4) & 0x0f;

	if (!adbhid[id]) {
		printk(KERN_ERR "ADB HID on ID %d not yet registered, packet %#02x, %#02x, %#02x, %#02x\n",
		       id, data[0], data[1], data[2], data[3]);
		return;
	}

	/* first check this is from register 0 */
	if (nb != 3 || (data[0] & 3) != KEYB_KEYREG)
		return;		/* ignore it */
	adbhid_input_keycode(id, data[1], 0);
	if (!(data[2] == 0xff || (data[2] == 0x7f && data[1] == 0x7f)))
		adbhid_input_keycode(id, data[2], 0);
}

static void
adbhid_input_keycode(int id, int scancode, int repeat)
{
	struct adbhid *ahid = adbhid[id];
	int keycode, up_flag, key;

	keycode = scancode & 0x7f;
	up_flag = scancode & 0x80;

	if (restore_capslock_events) {
		if (keycode == ADB_KEY_CAPSLOCK && !up_flag) {
			/* Key pressed, turning on the CapsLock LED.
			 * The next 0xff will be interpreted as a release. */
			ahid->flags |= FLAG_CAPSLOCK_TRANSLATE
					| FLAG_CAPSLOCK_DOWN;
		} else if (scancode == 0xff) {
			/* Scancode 0xff usually signifies that the capslock
			 * key was either pressed or released. */
			if (ahid->flags & FLAG_CAPSLOCK_TRANSLATE) {
				keycode = ADB_KEY_CAPSLOCK;
				if (ahid->flags & FLAG_CAPSLOCK_DOWN) {
					/* Key released */
					up_flag = 1;
					ahid->flags &= ~FLAG_CAPSLOCK_DOWN;
				} else {
					/* Key pressed */
					up_flag = 0;
					ahid->flags &= ~FLAG_CAPSLOCK_TRANSLATE;
				}
			} else {
				printk(KERN_INFO "Spurious caps lock event "
						"(scancode 0xff).");
			}
		}
	}

	switch (keycode) {
	case ADB_KEY_CAPSLOCK:
		if (!restore_capslock_events) {
			/* Generate down/up events for CapsLock everytime. */
			input_report_key(ahid->input, KEY_CAPSLOCK, 1);
			input_sync(ahid->input);
			input_report_key(ahid->input, KEY_CAPSLOCK, 0);
			input_sync(ahid->input);
			return;
		}
		break;
#ifdef CONFIG_PPC_PMAC
	case ADB_KEY_POWER_OLD: /* Power key on PBook 3400 needs remapping */
		switch(pmac_call_feature(PMAC_FTR_GET_MB_INFO,
			NULL, PMAC_MB_INFO_MODEL, 0)) {
		case PMAC_TYPE_COMET:
		case PMAC_TYPE_HOOPER:
		case PMAC_TYPE_KANGA:
			keycode = ADB_KEY_POWER;
		}
		break;
	case ADB_KEY_POWER:
		/* Fn + Command will produce a bogus "power" keycode */
		if (ahid->flags & FLAG_FN_KEY_PRESSED) {
			keycode = ADB_KEY_CMD;
			if (up_flag)
				ahid->flags &= ~FLAG_POWER_FROM_FN;
			else
				ahid->flags |= FLAG_POWER_FROM_FN;
		} else if (ahid->flags & FLAG_POWER_FROM_FN) {
			keycode = ADB_KEY_CMD;
			ahid->flags &= ~FLAG_POWER_FROM_FN;
		}
		break;
	case ADB_KEY_FN:
		/* Keep track of the Fn key state */
		if (up_flag) {
			ahid->flags &= ~FLAG_FN_KEY_PRESSED;
			/* Emulate Fn+delete = forward delete */
			if (ahid->flags & FLAG_EMU_FWDEL_DOWN) {
				ahid->flags &= ~FLAG_EMU_FWDEL_DOWN;
				keycode = ADB_KEY_FWDEL;
				break;
			}
		} else
			ahid->flags |= FLAG_FN_KEY_PRESSED;
		break;
	case ADB_KEY_DEL:
		/* Emulate Fn+delete = forward delete */
		if (ahid->flags & FLAG_FN_KEY_PRESSED) {
			keycode = ADB_KEY_FWDEL;
			if (up_flag)
				ahid->flags &= ~FLAG_EMU_FWDEL_DOWN;
			else
				ahid->flags |= FLAG_EMU_FWDEL_DOWN;
		}
		break;
#endif /* CONFIG_PPC_PMAC */
	}

	key = adbhid[id]->keycode[keycode];
	if (key) {
		input_report_key(adbhid[id]->input, key, !up_flag);
		input_sync(adbhid[id]->input);
	} else
		printk(KERN_INFO "Unhandled ADB key (scancode %#02x) %s.\n", keycode,
		       up_flag ? "released" : "pressed");

}

static void
adbhid_mouse_input(unsigned char *data, int nb, int autopoll)
{
	int id = (data[0] >> 4) & 0x0f;

	if (!adbhid[id]) {
		printk(KERN_ERR "ADB HID on ID %d not yet registered\n", id);
		return;
	}

  /*
    Handler 1 -- 100cpi original Apple mouse protocol.
    Handler 2 -- 200cpi original Apple mouse protocol.

    For Apple's standard one-button mouse protocol the data array will
    contain the following values:

                BITS    COMMENTS
    data[0] = dddd 1100 ADB command: Talk, register 0, for device dddd.
    data[1] = bxxx xxxx First button and x-axis motion.
    data[2] = byyy yyyy Second button and y-axis motion.

    Handler 4 -- Apple Extended mouse protocol.

    For Apple's 3-button mouse protocol the data array will contain the
    following values:

		BITS    COMMENTS
    data[0] = dddd 1100 ADB command: Talk, register 0, for device dddd.
    data[1] = bxxx xxxx Left button and x-axis motion.
    data[2] = byyy yyyy Second button and y-axis motion.
    data[3] = byyy bxxx Third button and fourth button.  Y is additional
	      high bits of y-axis motion.  XY is additional
	      high bits of x-axis motion.

    MacAlly 2-button mouse protocol.

    For MacAlly 2-button mouse protocol the data array will contain the
    following values:

		BITS    COMMENTS
    data[0] = dddd 1100 ADB command: Talk, register 0, for device dddd.
    data[1] = bxxx xxxx Left button and x-axis motion.
    data[2] = byyy yyyy Right button and y-axis motion.
    data[3] = ???? ???? unknown
    data[4] = ???? ???? unknown

  */

	/* If it's a trackpad, we alias the second button to the first.
	   NOTE: Apple sends an ADB flush command to the trackpad when
	         the first (the real) button is released. We could do
		 this here using async flush requests.
	*/
	switch (adbhid[id]->mouse_kind)
	{
	    case ADBMOUSE_TRACKPAD:
		data[1] = (data[1] & 0x7f) | ((data[1] & data[2]) & 0x80);
		data[2] = data[2] | 0x80;
		break;
	    case ADBMOUSE_MICROSPEED:
		data[1] = (data[1] & 0x7f) | ((data[3] & 0x01) << 7);
		data[2] = (data[2] & 0x7f) | ((data[3] & 0x02) << 6);
		data[3] = (data[3] & 0x77) | ((data[3] & 0x04) << 5)
			| (data[3] & 0x08);
		break;
	    case ADBMOUSE_TRACKBALLPRO:
		data[1] = (data[1] & 0x7f) | (((data[3] & 0x04) << 5)
			& ((data[3] & 0x08) << 4));
		data[2] = (data[2] & 0x7f) | ((data[3] & 0x01) << 7);
		data[3] = (data[3] & 0x77) | ((data[3] & 0x02) << 6);
		break;
	    case ADBMOUSE_MS_A3:
		data[1] = (data[1] & 0x7f) | ((data[3] & 0x01) << 7);
		data[2] = (data[2] & 0x7f) | ((data[3] & 0x02) << 6);
		data[3] = ((data[3] & 0x04) << 5);
		break;
            case ADBMOUSE_MACALLY2:
		data[3] = (data[2] & 0x80) ? 0x80 : 0x00;
		data[2] |= 0x80;  /* Right button is mapped as button 3 */
		nb=4;
                break;
	}

	input_report_key(adbhid[id]->input, BTN_LEFT,   !((data[1] >> 7) & 1));
	input_report_key(adbhid[id]->input, BTN_MIDDLE, !((data[2] >> 7) & 1));

	if (nb >= 4 && adbhid[id]->mouse_kind != ADBMOUSE_TRACKPAD)
		input_report_key(adbhid[id]->input, BTN_RIGHT,  !((data[3] >> 7) & 1));

	input_report_rel(adbhid[id]->input, REL_X,
			 ((data[2]&0x7f) < 64 ? (data[2]&0x7f) : (data[2]&0x7f)-128 ));
	input_report_rel(adbhid[id]->input, REL_Y,
			 ((data[1]&0x7f) < 64 ? (data[1]&0x7f) : (data[1]&0x7f)-128 ));

	input_sync(adbhid[id]->input);
}

static void
adbhid_buttons_input(unsigned char *data, int nb, int autopoll)
{
	int id = (data[0] >> 4) & 0x0f;

	if (!adbhid[id]) {
		printk(KERN_ERR "ADB HID on ID %d not yet registered\n", id);
		return;
	}

	switch (adbhid[id]->original_handler_id) {
	default:
	case 0x02: /* Adjustable keyboard button device */
	  {
		int down = (data[1] == (data[1] & 0xf));

		switch (data[1] & 0x0f) {
		case 0x0:	/* microphone */
			input_report_key(adbhid[id]->input, KEY_SOUND, down);
			break;

		case 0x1:	/* mute */
			input_report_key(adbhid[id]->input, KEY_MUTE, down);
			break;

		case 0x2:	/* volume decrease */
			input_report_key(adbhid[id]->input, KEY_VOLUMEDOWN, down);
			break;

		case 0x3:	/* volume increase */
			input_report_key(adbhid[id]->input, KEY_VOLUMEUP, down);
			break;

		default:
			printk(KERN_INFO "Unhandled ADB_MISC event %02x, %02x, %02x, %02x\n",
			       data[0], data[1], data[2], data[3]);
			break;
		}
	  }
	  break;

	case 0x1f: /* Powerbook button device */
	  {
		int down = (data[1] == (data[1] & 0xf));

		/*
		 * XXX: Where is the contrast control for the passive?
		 *  -- Cort
		 */

		switch (data[1] & 0x0f) {
		case 0x8:	/* mute */
			input_report_key(adbhid[id]->input, KEY_MUTE, down);
			break;

		case 0x7:	/* volume decrease */
			input_report_key(adbhid[id]->input, KEY_VOLUMEDOWN, down);
			break;

		case 0x6:	/* volume increase */
			input_report_key(adbhid[id]->input, KEY_VOLUMEUP, down);
			break;

		case 0xb:	/* eject */
			input_report_key(adbhid[id]->input, KEY_EJECTCD, down);
			break;

		case 0xa:	/* brightness decrease */
#ifdef CONFIG_PMAC_BACKLIGHT
			if (down)
				pmac_backlight_key_down();
#endif
			input_report_key(adbhid[id]->input, KEY_BRIGHTNESSDOWN, down);
			break;

		case 0x9:	/* brightness increase */
#ifdef CONFIG_PMAC_BACKLIGHT
			if (down)
				pmac_backlight_key_up();
#endif
			input_report_key(adbhid[id]->input, KEY_BRIGHTNESSUP, down);
			break;

		case 0xc:	/* videomode switch */
			input_report_key(adbhid[id]->input, KEY_SWITCHVIDEOMODE, down);
			break;

		case 0xd:	/* keyboard illumination toggle */
			input_report_key(adbhid[id]->input, KEY_KBDILLUMTOGGLE, down);
			break;

		case 0xe:	/* keyboard illumination decrease */
			input_report_key(adbhid[id]->input, KEY_KBDILLUMDOWN, down);
			break;

		case 0xf:
			switch (data[1]) {
			case 0x8f:
			case 0x0f:
				/* keyboard illumination increase */
				input_report_key(adbhid[id]->input, KEY_KBDILLUMUP, down);
				break;

			case 0x7f:
			case 0xff:
				/* keypad overlay toogle */
				break;

			default:
				printk(KERN_INFO "Unhandled ADB_MISC event %02x, %02x, %02x, %02x\n",
				       data[0], data[1], data[2], data[3]);
				break;
			}
			break;
		default:
			printk(KERN_INFO "Unhandled ADB_MISC event %02x, %02x, %02x, %02x\n",
			       data[0], data[1], data[2], data[3]);
			break;
		}
	  }
	  break;
	}

	input_sync(adbhid[id]->input);
}

static struct adb_request led_request;
static int leds_pending[16];
static int leds_req_pending;
static int pending_devs[16];
static int pending_led_start;
static int pending_led_end;
static DEFINE_SPINLOCK(leds_lock);

static void leds_done(struct adb_request *req)
{
	int leds = 0, device = 0, pending = 0;
	unsigned long flags;

	spin_lock_irqsave(&leds_lock, flags);

	if (pending_led_start != pending_led_end) {
		device = pending_devs[pending_led_start];
		leds = leds_pending[device] & 0xff;
		leds_pending[device] = 0;
		pending_led_start++;
		pending_led_start = (pending_led_start < 16) ? pending_led_start : 0;
		pending = leds_req_pending;
	} else
		leds_req_pending = 0;
	spin_unlock_irqrestore(&leds_lock, flags);
	if (pending)
		adb_request(&led_request, leds_done, 0, 3,
			    ADB_WRITEREG(device, KEYB_LEDREG), 0xff, ~leds);
}

static void real_leds(unsigned char leds, int device)
{
	unsigned long flags;

	spin_lock_irqsave(&leds_lock, flags);
	if (!leds_req_pending) {
		leds_req_pending = 1;
		spin_unlock_irqrestore(&leds_lock, flags);	       
		adb_request(&led_request, leds_done, 0, 3,
			    ADB_WRITEREG(device, KEYB_LEDREG), 0xff, ~leds);
		return;
	} else {
		if (!(leds_pending[device] & 0x100)) {
			pending_devs[pending_led_end] = device;
			pending_led_end++;
			pending_led_end = (pending_led_end < 16) ? pending_led_end : 0;
		}
		leds_pending[device] = leds | 0x100;
	}
	spin_unlock_irqrestore(&leds_lock, flags);	       
}

/*
 * Event callback from the input module. Events that change the state of
 * the hardware are processed here.
 */
static int adbhid_kbd_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
{
	struct adbhid *adbhid = input_get_drvdata(dev);
	unsigned char leds;

	switch (type) {
	case EV_LED:
		leds =  (test_bit(LED_SCROLLL, dev->led) ? 4 : 0) |
			(test_bit(LED_NUML,    dev->led) ? 1 : 0) |
			(test_bit(LED_CAPSL,   dev->led) ? 2 : 0);
		real_leds(leds, adbhid->id);
		return 0;
	}

	return -1;
}

static int
adb_message_handler(struct notifier_block *this, unsigned long code, void *x)
{
	switch (code) {
	case ADB_MSG_PRE_RESET:
	case ADB_MSG_POWERDOWN:
		/* Stop the repeat timer. Autopoll is already off at this point */
		{
			int i;
			for (i = 1; i < 16; i++) {
				if (adbhid[i])
					del_timer_sync(&adbhid[i]->input->timer);
			}
		}

		/* Stop pending led requests */
		while(leds_req_pending)
			adb_poll();
		break;

	case ADB_MSG_POST_RESET:
		adbhid_probe();
		break;
	}
	return NOTIFY_DONE;
}

static int
adbhid_input_register(int id, int default_id, int original_handler_id,
		      int current_handler_id, int mouse_kind)
{
	struct adbhid *hid;
	struct input_dev *input_dev;
	int err;
	int i;

	if (adbhid[id]) {
		printk(KERN_ERR "Trying to reregister ADB HID on ID %d\n", id);
		return -EEXIST;
	}

	adbhid[id] = hid = kzalloc(sizeof(struct adbhid), GFP_KERNEL);
	input_dev = input_allocate_device();
	if (!hid || !input_dev) {
		err = -ENOMEM;
		goto fail;
	}

	sprintf(hid->phys, "adb%d:%d.%02x/input", id, default_id, original_handler_id);

	hid->input = input_dev;
	hid->id = default_id;
	hid->original_handler_id = original_handler_id;
	hid->current_handler_id = current_handler_id;
	hid->mouse_kind = mouse_kind;
	hid->flags = 0;
	input_set_drvdata(input_dev, hid);
	input_dev->name = hid->name;
	input_dev->phys = hid->phys;
	input_dev->id.bustype = BUS_ADB;
	input_dev->id.vendor = 0x0001;
	input_dev->id.product = (id << 12) | (default_id << 8) | original_handler_id;
	input_dev->id.version = 0x0100;

	switch (default_id) {
	case ADB_KEYBOARD:
		hid->keycode = kmalloc(sizeof(adb_to_linux_keycodes), GFP_KERNEL);
		if (!hid->keycode) {
			err = -ENOMEM;
			goto fail;
		}

		sprintf(hid->name, "ADB keyboard");

		memcpy(hid->keycode, adb_to_linux_keycodes, sizeof(adb_to_linux_keycodes));

		printk(KERN_INFO "Detected ADB keyboard, type ");
		switch (original_handler_id) {
		default:
			printk("<unknown>.\n");
			input_dev->id.version = ADB_KEYBOARD_UNKNOWN;
			break;

		case 0x01: case 0x02: case 0x03: case 0x06: case 0x08:
		case 0x0C: case 0x10: case 0x18: case 0x1B: case 0x1C:
		case 0xC0: case 0xC3: case 0xC6:
			printk("ANSI.\n");
			input_dev->id.version = ADB_KEYBOARD_ANSI;
			break;

		case 0x04: case 0x05: case 0x07: case 0x09: case 0x0D:
		case 0x11: case 0x14: case 0x19: case 0x1D: case 0xC1:
		case 0xC4: case 0xC7:
			printk("ISO, swapping keys.\n");
			input_dev->id.version = ADB_KEYBOARD_ISO;
			i = hid->keycode[10];
			hid->keycode[10] = hid->keycode[50];
			hid->keycode[50] = i;
			break;

		case 0x12: case 0x15: case 0x16: case 0x17: case 0x1A:
		case 0x1E: case 0xC2: case 0xC5: case 0xC8: case 0xC9:
			printk("JIS.\n");
			input_dev->id.version = ADB_KEYBOARD_JIS;
			break;
		}

		for (i = 0; i < 128; i++)
			if (hid->keycode[i])
				set_bit(hid->keycode[i], input_dev->keybit);

		input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_LED) |
			BIT_MASK(EV_REP);
		input_dev->ledbit[0] = BIT_MASK(LED_SCROLLL) |
			BIT_MASK(LED_CAPSL) | BIT_MASK(LED_NUML);
		input_dev->event = adbhid_kbd_event;
		input_dev->keycodemax = KEY_FN;
		input_dev->keycodesize = sizeof(hid->keycode[0]);
		break;

	case ADB_MOUSE:
		sprintf(hid->name, "ADB mouse");

		input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
		input_dev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) |
			BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
		input_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
		break;

	case ADB_MISC:
		switch (original_handler_id) {
		case 0x02: /* Adjustable keyboard button device */
			sprintf(hid->name, "ADB adjustable keyboard buttons");
			input_dev->evbit[0] = BIT_MASK(EV_KEY) |
				BIT_MASK(EV_REP);
			set_bit(KEY_SOUND, input_dev->keybit);
			set_bit(KEY_MUTE, input_dev->keybit);
			set_bit(KEY_VOLUMEUP, input_dev->keybit);
			set_bit(KEY_VOLUMEDOWN, input_dev->keybit);
			break;
		case 0x1f: /* Powerbook button device */
			sprintf(hid->name, "ADB Powerbook buttons");
			input_dev->evbit[0] = BIT_MASK(EV_KEY) |
				BIT_MASK(EV_REP);
			set_bit(KEY_MUTE, input_dev->keybit);
			set_bit(KEY_VOLUMEUP, input_dev->keybit);
			set_bit(KEY_VOLUMEDOWN, input_dev->keybit);
			set_bit(KEY_BRIGHTNESSUP, input_dev->keybit);
			set_bit(KEY_BRIGHTNESSDOWN, input_dev->keybit);
			set_bit(KEY_EJECTCD, input_dev->keybit);
			set_bit(KEY_SWITCHVIDEOMODE, input_dev->keybit);
			set_bit(KEY_KBDILLUMTOGGLE, input_dev->keybit);
			set_bit(KEY_KBDILLUMDOWN, input_dev->keybit);
			set_bit(KEY_KBDILLUMUP, input_dev->keybit);
			break;
		}
		if (hid->name[0])
			break;
		/* else fall through */

	default:
		printk(KERN_INFO "Trying to register unknown ADB device to input layer.\n");
		err = -ENODEV;
		goto fail;
	}

	input_dev->keycode = hid->keycode;

	err = input_register_device(input_dev);
	if (err)
		goto fail;

	if (default_id == ADB_KEYBOARD) {
		/* HACK WARNING!! This should go away as soon there is an utility
		 * to control that for event devices.
		 */
		input_dev->rep[REP_DELAY] = 500;   /* input layer default: 250 */
		input_dev->rep[REP_PERIOD] = 66; /* input layer default: 33 */
	}

	return 0;

 fail:	input_free_device(input_dev);
	if (hid) {
		kfree(hid->keycode);
		kfree(hid);
	}
	adbhid[id] = NULL;
	return err;
}

static void adbhid_input_unregister(int id)
{
	input_unregister_device(adbhid[id]->input);
	kfree(adbhid[id]->keycode);
	kfree(adbhid[id]);
	adbhid[id] = NULL;
}


static u16
adbhid_input_reregister(int id, int default_id, int org_handler_id,
			int cur_handler_id, int mk)
{
	if (adbhid[id]) {
		if (adbhid[id]->input->id.product !=
		    ((id << 12)|(default_id << 8)|org_handler_id)) {
			adbhid_input_unregister(id);
			adbhid_input_register(id, default_id, org_handler_id,
					      cur_handler_id, mk);
		}
	} else
		adbhid_input_register(id, default_id, org_handler_id,
				      cur_handler_id, mk);
	return 1<<id;
}

static void
adbhid_input_devcleanup(u16 exist)
{
	int i;
	for(i=1; i<16; i++)
		if (adbhid[i] && !(exist&(1<<i)))
			adbhid_input_unregister(i);
}

static void
adbhid_probe(void)
{
	struct adb_request req;
	int i, default_id, org_handler_id, cur_handler_id;
	u16 reg = 0;

	adb_register(ADB_MOUSE, 0, &mouse_ids, adbhid_mouse_input);
	adb_register(ADB_KEYBOARD, 0, &keyboard_ids, adbhid_keyboard_input);
	adb_register(ADB_MISC, 0, &buttons_ids, adbhid_buttons_input);

	for (i = 0; i < keyboard_ids.nids; i++) {
		int id = keyboard_ids.id[i];

		adb_get_infos(id, &default_id, &org_handler_id);

		/* turn off all leds */
		adb_request(&req, NULL, ADBREQ_SYNC, 3,
			    ADB_WRITEREG(id, KEYB_LEDREG), 0xff, 0xff);

		/* Enable full feature set of the keyboard
		   ->get it to send separate codes for left and right shift,
		   control, option keys */
#if 0		/* handler 5 doesn't send separate codes for R modifiers */
		if (adb_try_handler_change(id, 5))
			printk("ADB keyboard at %d, handler set to 5\n", id);
		else
#endif
		if (adb_try_handler_change(id, 3))
			printk("ADB keyboard at %d, handler set to 3\n", id);
		else
			printk("ADB keyboard at %d, handler 1\n", id);

		adb_get_infos(id, &default_id, &cur_handler_id);
		reg |= adbhid_input_reregister(id, default_id, org_handler_id,
					       cur_handler_id, 0);
	}

	for (i = 0; i < buttons_ids.nids; i++) {
		int id = buttons_ids.id[i];

		adb_get_infos(id, &default_id, &org_handler_id);
		reg |= adbhid_input_reregister(id, default_id, org_handler_id,
					       org_handler_id, 0);
	}

	/* Try to switch all mice to handler 4, or 2 for three-button
	   mode and full resolution. */
	for (i = 0; i < mouse_ids.nids; i++) {
		int id = mouse_ids.id[i];
		int mouse_kind;

		adb_get_infos(id, &default_id, &org_handler_id);

		if (adb_try_handler_change(id, 4)) {
			printk("ADB mouse at %d, handler set to 4", id);
			mouse_kind = ADBMOUSE_EXTENDED;
		}
		else if (adb_try_handler_change(id, 0x2F)) {
			printk("ADB mouse at %d, handler set to 0x2F", id);
			mouse_kind = ADBMOUSE_MICROSPEED;
		}
		else if (adb_try_handler_change(id, 0x42)) {
			printk("ADB mouse at %d, handler set to 0x42", id);
			mouse_kind = ADBMOUSE_TRACKBALLPRO;
		}
		else if (adb_try_handler_change(id, 0x66)) {
			printk("ADB mouse at %d, handler set to 0x66", id);
			mouse_kind = ADBMOUSE_MICROSPEED;
		}
		else if (adb_try_handler_change(id, 0x5F)) {
			printk("ADB mouse at %d, handler set to 0x5F", id);
			mouse_kind = ADBMOUSE_MICROSPEED;
		}
		else if (adb_try_handler_change(id, 3)) {
			printk("ADB mouse at %d, handler set to 3", id);
			mouse_kind = ADBMOUSE_MS_A3;
		}
		else if (adb_try_handler_change(id, 2)) {
			printk("ADB mouse at %d, handler set to 2", id);
			mouse_kind = ADBMOUSE_STANDARD_200;
		}
		else {
			printk("ADB mouse at %d, handler 1", id);
			mouse_kind = ADBMOUSE_STANDARD_100;
		}

		if ((mouse_kind == ADBMOUSE_TRACKBALLPRO)
		    || (mouse_kind == ADBMOUSE_MICROSPEED)) {
			init_microspeed(id);
		} else if (mouse_kind == ADBMOUSE_MS_A3) {
			init_ms_a3(id);
		} else if (mouse_kind ==  ADBMOUSE_EXTENDED) {
			/*
			 * Register 1 is usually used for device
			 * identification.  Here, we try to identify
			 * a known device and call the appropriate
			 * init function.
			 */
			adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
				    ADB_READREG(id, 1));

			if ((req.reply_len) &&
			    (req.reply[1] == 0x9a) && ((req.reply[2] == 0x21)
			    	|| (req.reply[2] == 0x20))) {
				mouse_kind = ADBMOUSE_TRACKBALL;
				init_trackball(id);
			}
			else if ((req.reply_len >= 4) &&
			    (req.reply[1] == 0x74) && (req.reply[2] == 0x70) &&
			    (req.reply[3] == 0x61) && (req.reply[4] == 0x64)) {
				mouse_kind = ADBMOUSE_TRACKPAD;
				init_trackpad(id);
			}
			else if ((req.reply_len >= 4) &&
			    (req.reply[1] == 0x4b) && (req.reply[2] == 0x4d) &&
			    (req.reply[3] == 0x4c) && (req.reply[4] == 0x31)) {
				mouse_kind = ADBMOUSE_TURBOMOUSE5;
				init_turbomouse(id);
			}
			else if ((req.reply_len == 9) &&
			    (req.reply[1] == 0x4b) && (req.reply[2] == 0x4f) &&
			    (req.reply[3] == 0x49) && (req.reply[4] == 0x54)) {
				if (adb_try_handler_change(id, 0x42)) {
					printk("\nADB MacAlly 2-button mouse at %d, handler set to 0x42", id);
					mouse_kind = ADBMOUSE_MACALLY2;
				}
			}
		}
		printk("\n");

		adb_get_infos(id, &default_id, &cur_handler_id);
		reg |= adbhid_input_reregister(id, default_id, org_handler_id,
					       cur_handler_id, mouse_kind);
	}
	adbhid_input_devcleanup(reg);
}

static void 
init_trackpad(int id)
{
	struct adb_request req;
	unsigned char r1_buffer[8];

	printk(" (trackpad)");

	adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
		    ADB_READREG(id,1));
	if (req.reply_len < 8)
	    printk("bad length for reg. 1\n");
	else
	{
	    memcpy(r1_buffer, &req.reply[1], 8);

	    adb_request(&req, NULL, ADBREQ_SYNC, 9,
	        ADB_WRITEREG(id,1),
	            r1_buffer[0],
	            r1_buffer[1],
	            r1_buffer[2],
	            r1_buffer[3],
	            r1_buffer[4],
	            r1_buffer[5],
	            0x0d,
	            r1_buffer[7]);

            adb_request(&req, NULL, ADBREQ_SYNC, 9,
	        ADB_WRITEREG(id,2),
	    	    0x99,
	    	    0x94,
	    	    0x19,
	    	    0xff,
	    	    0xb2,
	    	    0x8a,
	    	    0x1b,
	    	    0x50);

	    adb_request(&req, NULL, ADBREQ_SYNC, 9,
	        ADB_WRITEREG(id,1),
	            r1_buffer[0],
	            r1_buffer[1],
	            r1_buffer[2],
	            r1_buffer[3],
	            r1_buffer[4],
	            r1_buffer[5],
	            0x03, /*r1_buffer[6],*/
	            r1_buffer[7]);

	    /* Without this flush, the trackpad may be locked up */
	    adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
        }
}

static void 
init_trackball(int id)
{
	struct adb_request req;

	printk(" (trackman/mouseman)");

	adb_request(&req, NULL, ADBREQ_SYNC, 3,
	ADB_WRITEREG(id,1), 00,0x81);

	adb_request(&req, NULL, ADBREQ_SYNC, 3,
	ADB_WRITEREG(id,1), 01,0x81);

	adb_request(&req, NULL, ADBREQ_SYNC, 3,
	ADB_WRITEREG(id,1), 02,0x81);

	adb_request(&req, NULL, ADBREQ_SYNC, 3,
	ADB_WRITEREG(id,1), 03,0x38);

	adb_request(&req, NULL, ADBREQ_SYNC, 3,
	ADB_WRITEREG(id,1), 00,0x81);

	adb_request(&req, NULL, ADBREQ_SYNC, 3,
	ADB_WRITEREG(id,1), 01,0x81);

	adb_request(&req, NULL, ADBREQ_SYNC, 3,
	ADB_WRITEREG(id,1), 02,0x81);

	adb_request(&req, NULL, ADBREQ_SYNC, 3,
	ADB_WRITEREG(id,1), 03,0x38);
}

static void
init_turbomouse(int id)
{
	struct adb_request req;

        printk(" (TurboMouse 5)");

	adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));

	adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(3));

	adb_request(&req, NULL, ADBREQ_SYNC, 9,
	ADB_WRITEREG(3,2),
	    0xe7,
	    0x8c,
	    0,
	    0,
	    0,
	    0xff,
	    0xff,
	    0x94);

	adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(3));

	adb_request(&req, NULL, ADBREQ_SYNC, 9,
	ADB_WRITEREG(3,2),
	    0xa5,
	    0x14,
	    0,
	    0,
	    0x69,
	    0xff,
	    0xff,
	    0x27);
}

static void
init_microspeed(int id)
{
	struct adb_request req;

        printk(" (Microspeed/MacPoint or compatible)");

	adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));

	/* This will initialize mice using the Microspeed, MacPoint and
	   other compatible firmware. Bit 12 enables extended protocol.
	   
	   Register 1 Listen (4 Bytes)
            0 -  3     Button is mouse (set also for double clicking!!!)
            4 -  7     Button is locking (affects change speed also)
            8 - 11     Button changes speed
           12          1 = Extended mouse mode, 0 = normal mouse mode
           13 - 15     unused 0
           16 - 23     normal speed
           24 - 31     changed speed

       Register 1 talk holds version and product identification information.
       Register 1 Talk (4 Bytes):
            0 -  7     Product code
            8 - 23     undefined, reserved
           24 - 31     Version number
        
       Speed 0 is max. 1 to 255 set speed in increments of 1/256 of max.
 */
	adb_request(&req, NULL, ADBREQ_SYNC, 5,
	ADB_WRITEREG(id,1),
	    0x20,	/* alt speed = 0x20 (rather slow) */
	    0x00,	/* norm speed = 0x00 (fastest) */
	    0x10,	/* extended protocol, no speed change */
	    0x07);	/* all buttons enabled as mouse buttons, no locking */


	adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
}

static void
init_ms_a3(int id)
{
	struct adb_request req;

	printk(" (Mouse Systems A3 Mouse, or compatible)");
	adb_request(&req, NULL, ADBREQ_SYNC, 3,
	ADB_WRITEREG(id, 0x2),
	    0x00,
	    0x07);
 
 	adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
}

static int __init adbhid_init(void)
{
#ifndef CONFIG_MAC
	if (!machine_is(chrp) && !machine_is(powermac))
		return 0;
#endif

	led_request.complete = 1;

	adbhid_probe();

	blocking_notifier_chain_register(&adb_client_list,
			&adbhid_adb_notifier);

	return 0;
}

static void __exit adbhid_exit(void)
{
}
 
module_init(adbhid_init);
module_exit(adbhid_exit);