summaryrefslogtreecommitdiff
path: root/drivers/usb/input/wacom.c
blob: d3e15df9e815ec32d819aa57b9c42544193cae7b (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
/*
 *  USB Wacom Graphire and Wacom Intuos tablet support
 *
 *  Copyright (c) 2000-2004 Vojtech Pavlik	<vojtech@ucw.cz>
 *  Copyright (c) 2000 Andreas Bach Aaen	<abach@stofanet.dk>
 *  Copyright (c) 2000 Clifford Wolf		<clifford@clifford.at>
 *  Copyright (c) 2000 Sam Mosel		<sam.mosel@computer.org>
 *  Copyright (c) 2000 James E. Blair		<corvus@gnu.org>
 *  Copyright (c) 2000 Daniel Egger		<egger@suse.de>
 *  Copyright (c) 2001 Frederic Lepied		<flepied@mandrakesoft.com>
 *  Copyright (c) 2004 Panagiotis Issaris	<panagiotis.issaris@mech.kuleuven.ac.be>
 *  Copyright (c) 2002-2005 Ping Cheng		<pingc@wacom.com>
 *
 *  ChangeLog:
 *      v0.1 (vp)  - Initial release
 *      v0.2 (aba) - Support for all buttons / combinations
 *      v0.3 (vp)  - Support for Intuos added
 *	v0.4 (sm)  - Support for more Intuos models, menustrip
 *			relative mode, proximity.
 *	v0.5 (vp)  - Big cleanup, nifty features removed,
 *			they belong in userspace
 *	v1.8 (vp)  - Submit URB only when operating, moved to CVS,
 *			use input_report_key instead of report_btn and
 *			other cleanups
 *	v1.11 (vp) - Add URB ->dev setting for new kernels
 *	v1.11 (jb) - Add support for the 4D Mouse & Lens
 *	v1.12 (de) - Add support for two more inking pen IDs
 *	v1.14 (vp) - Use new USB device id probing scheme.
 *		     Fix Wacom Graphire mouse wheel
 *	v1.18 (vp) - Fix mouse wheel direction
 *		     Make mouse relative
 *      v1.20 (fl) - Report tool id for Intuos devices
 *                 - Multi tools support
 *                 - Corrected Intuos protocol decoding (airbrush, 4D mouse, lens cursor...)
 *                 - Add PL models support
 *		   - Fix Wacom Graphire mouse wheel again
 *	v1.21 (vp) - Removed protocol descriptions
 *		   - Added MISC_SERIAL for tool serial numbers
 *	      (gb) - Identify version on module load.
 *    v1.21.1 (fl) - added Graphire2 support
 *    v1.21.2 (fl) - added Intuos2 support
 *                 - added all the PL ids
 *    v1.21.3 (fl) - added another eraser id from Neil Okamoto
 *                 - added smooth filter for Graphire from Peri Hankey
 *                 - added PenPartner support from Olaf van Es
 *                 - new tool ids from Ole Martin Bjoerndalen
 *	v1.29 (pc) - Add support for more tablets
 *		   - Fix pressure reporting
 *	v1.30 (vp) - Merge 2.4 and 2.5 drivers
 *		   - Since 2.5 now has input_sync(), remove MSC_SERIAL abuse
 *		   - Cleanups here and there
 *    v1.30.1 (pi) - Added Graphire3 support
 *	v1.40 (pc) - Add support for several new devices, fix eraser reporting, ...
 *	v1.43 (pc) - Added support for Cintiq 21UX
 *		   - Fixed a Graphire bug
 *		   - Merged wacom_intuos3_irq into wacom_intuos_irq
 *	v1.44 (pc) - Added support for Graphire4, Cintiq 710, Intuos3 6x11, etc.
 *		   - Report Device IDs
 */

/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/input.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/usb.h>
#include <linux/usb_input.h>
#include <asm/unaligned.h>
#include <asm/byteorder.h>

/*
 * Version Information
 */
#define DRIVER_VERSION "v1.44"
#define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@ucw.cz>"
#define DRIVER_DESC "USB Wacom Graphire and Wacom Intuos tablet driver"
#define DRIVER_LICENSE "GPL"

MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE(DRIVER_LICENSE);

#define USB_VENDOR_ID_WACOM	0x056a
#define STYLUS_DEVICE_ID	0x02
#define CURSOR_DEVICE_ID	0x06
#define ERASER_DEVICE_ID	0x0A

enum {
	PENPARTNER = 0,
	GRAPHIRE,
	WACOM_G4,
	PL,
	INTUOS,
	INTUOS3,
	CINTIQ,
	MAX_TYPE
};

struct wacom_features {
	char *name;
	int pktlen;
	int x_max;
	int y_max;
	int pressure_max;
	int distance_max;
	int type;
	usb_complete_t irq;
};

struct wacom {
	signed char *data;
	dma_addr_t data_dma;
	struct input_dev *dev;
	struct usb_device *usbdev;
	struct urb *irq;
	struct wacom_features *features;
	int tool[2];
	int id[2];
	__u32 serial[2];
	char phys[32];
};

#define USB_REQ_SET_REPORT	0x09
static int usb_set_report(struct usb_interface *intf, unsigned char type,
				unsigned char id, void *buf, int size)
{
	return usb_control_msg(interface_to_usbdev(intf),
		usb_sndctrlpipe(interface_to_usbdev(intf), 0),
                USB_REQ_SET_REPORT, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
                (type << 8) + id, intf->altsetting[0].desc.bInterfaceNumber,
		buf, size, 1000);
}

static void wacom_pl_irq(struct urb *urb, struct pt_regs *regs)
{
	struct wacom *wacom = urb->context;
	unsigned char *data = wacom->data;
	struct input_dev *dev = wacom->dev;
	int prox, pressure, id;
	int retval;

	switch (urb->status) {
	case 0:
		/* success */
		break;
	case -ECONNRESET:
	case -ENOENT:
	case -ESHUTDOWN:
		/* this urb is terminated, clean up */
		dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
		return;
	default:
		dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
		goto exit;
	}

	if (data[0] != 2) {
		dbg("wacom_pl_irq: received unknown report #%d", data[0]);
		goto exit;
	}

	prox = data[1] & 0x40;

	input_regs(dev, regs);

	id = ERASER_DEVICE_ID;
	if (prox) {

		pressure = (signed char)((data[7] << 1) | ((data[4] >> 2) & 1));
		if (wacom->features->pressure_max > 255)
			pressure = (pressure << 1) | ((data[4] >> 6) & 1);
		pressure += (wacom->features->pressure_max + 1) / 2;

		/*
		 * if going from out of proximity into proximity select between the eraser
		 * and the pen based on the state of the stylus2 button, choose eraser if
		 * pressed else choose pen. if not a proximity change from out to in, send
		 * an out of proximity for previous tool then a in for new tool.
		 */
		if (!wacom->tool[0]) {
			/* Eraser bit set for DTF */
			if (data[1] & 0x10)
				wacom->tool[1] = BTN_TOOL_RUBBER;
			else
				/* Going into proximity select tool */
				wacom->tool[1] = (data[4] & 0x20) ? BTN_TOOL_RUBBER : BTN_TOOL_PEN;
		} else {
			/* was entered with stylus2 pressed */
			if (wacom->tool[1] == BTN_TOOL_RUBBER && !(data[4] & 0x20)) {
				/* report out proximity for previous tool */
				input_report_key(dev, wacom->tool[1], 0);
				input_sync(dev);
				wacom->tool[1] = BTN_TOOL_PEN;
				goto exit;
			}
		}
		if (wacom->tool[1] != BTN_TOOL_RUBBER) {
			/* Unknown tool selected default to pen tool */
			wacom->tool[1] = BTN_TOOL_PEN;
			id = STYLUS_DEVICE_ID;
		}
		input_report_key(dev, wacom->tool[1], id); /* report in proximity for tool */
		input_report_abs(dev, ABS_X, data[3] | (data[2] << 7) | ((data[1] & 0x03) << 14));
		input_report_abs(dev, ABS_Y, data[6] | (data[5] << 7) | ((data[4] & 0x03) << 14));
		input_report_abs(dev, ABS_PRESSURE, pressure);

		input_report_key(dev, BTN_TOUCH, data[4] & 0x08);
		input_report_key(dev, BTN_STYLUS, data[4] & 0x10);
		/* Only allow the stylus2 button to be reported for the pen tool. */
		input_report_key(dev, BTN_STYLUS2, (wacom->tool[1] == BTN_TOOL_PEN) && (data[4] & 0x20));
	} else {
		/* report proximity-out of a (valid) tool */
		if (wacom->tool[1] != BTN_TOOL_RUBBER) {
			/* Unknown tool selected default to pen tool */
			wacom->tool[1] = BTN_TOOL_PEN;
		}
		input_report_key(dev, wacom->tool[1], prox);
	}

	wacom->tool[0] = prox; /* Save proximity state */
	input_sync(dev);

 exit:
	retval = usb_submit_urb (urb, GFP_ATOMIC);
	if (retval)
		err ("%s - usb_submit_urb failed with result %d",
		     __FUNCTION__, retval);
}

static void wacom_ptu_irq(struct urb *urb, struct pt_regs *regs)
{
	struct wacom *wacom = urb->context;
	unsigned char *data = wacom->data;
	struct input_dev *dev = wacom->dev;
	int retval;

	switch (urb->status) {
	case 0:
		/* success */
		break;
	case -ECONNRESET:
	case -ENOENT:
	case -ESHUTDOWN:
		/* this urb is terminated, clean up */
		dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
		return;
	default:
		dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
		goto exit;
	}

	if (data[0] != 2) {
		printk(KERN_INFO "wacom_ptu_irq: received unknown report #%d\n", data[0]);
		goto exit;
	}

	input_regs(dev, regs);
	if (data[1] & 0x04) {
		input_report_key(dev, BTN_TOOL_RUBBER, (data[1] & 0x20) ? ERASER_DEVICE_ID : 0);
		input_report_key(dev, BTN_TOUCH, data[1] & 0x08);
	} else {
		input_report_key(dev, BTN_TOOL_PEN, (data[1] & 0x20) ? STYLUS_DEVICE_ID : 0);
		input_report_key(dev, BTN_TOUCH, data[1] & 0x01);
	}
	input_report_abs(dev, ABS_X, le16_to_cpu(*(__le16 *) &data[2]));
	input_report_abs(dev, ABS_Y, le16_to_cpu(*(__le16 *) &data[4]));
	input_report_abs(dev, ABS_PRESSURE, le16_to_cpu(*(__le16 *) &data[6]));
	input_report_key(dev, BTN_STYLUS, data[1] & 0x02);
	input_report_key(dev, BTN_STYLUS2, data[1] & 0x10);

	input_sync(dev);

 exit:
	retval = usb_submit_urb (urb, GFP_ATOMIC);
	if (retval)
		err ("%s - usb_submit_urb failed with result %d",
		     __FUNCTION__, retval);
}

static void wacom_penpartner_irq(struct urb *urb, struct pt_regs *regs)
{
	struct wacom *wacom = urb->context;
	unsigned char *data = wacom->data;
	struct input_dev *dev = wacom->dev;
	int retval;

	switch (urb->status) {
	case 0:
		/* success */
		break;
	case -ECONNRESET:
	case -ENOENT:
	case -ESHUTDOWN:
		/* this urb is terminated, clean up */
		dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
		return;
	default:
		dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
		goto exit;
	}

	if (data[0] != 2) {
		printk(KERN_INFO "wacom_penpartner_irq: received unknown report #%d\n", data[0]);
		goto exit;
	}

	input_regs(dev, regs);
	input_report_key(dev, BTN_TOOL_PEN, STYLUS_DEVICE_ID);
	input_report_abs(dev, ABS_X, le16_to_cpu(*(__le16 *) &data[1]));
	input_report_abs(dev, ABS_Y, le16_to_cpu(*(__le16 *) &data[3]));
	input_report_abs(dev, ABS_PRESSURE, (signed char)data[6] + 127);
	input_report_key(dev, BTN_TOUCH, ((signed char)data[6] > -80) && !(data[5] & 0x20));
	input_report_key(dev, BTN_STYLUS, (data[5] & 0x40));
	input_sync(dev);

 exit:
	retval = usb_submit_urb (urb, GFP_ATOMIC);
	if (retval)
		err ("%s - usb_submit_urb failed with result %d",
		     __FUNCTION__, retval);
}

static void wacom_graphire_irq(struct urb *urb, struct pt_regs *regs)
{
	struct wacom *wacom = urb->context;
	unsigned char *data = wacom->data;
	struct input_dev *dev = wacom->dev;
	int x, y, id, rw;
	int retval;

	switch (urb->status) {
	case 0:
		/* success */
		break;
	case -ECONNRESET:
	case -ENOENT:
	case -ESHUTDOWN:
		/* this urb is terminated, clean up */
		dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
		return;
	default:
		dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
		goto exit;
	}

	if (data[0] != 2) {
		dbg("wacom_graphire_irq: received unknown report #%d", data[0]);
		goto exit;
	}

	input_regs(dev, regs);

	id = STYLUS_DEVICE_ID;
	if (data[1] & 0x10) { /* in prox */

		switch ((data[1] >> 5) & 3) {

			case 0:	/* Pen */
				wacom->tool[0] = BTN_TOOL_PEN;
				break;

			case 1: /* Rubber */
				wacom->tool[0] = BTN_TOOL_RUBBER;
				id = ERASER_DEVICE_ID;
				break;

			case 2: /* Mouse with wheel */
				input_report_key(dev, BTN_MIDDLE, data[1] & 0x04);
				if (wacom->features->type == WACOM_G4) {
					rw = data[7] & 0x04 ? -(data[7] & 0x03) : (data[7] & 0x03);
					input_report_rel(dev, REL_WHEEL, rw);
				} else
					input_report_rel(dev, REL_WHEEL, (signed char) data[6]);
				/* fall through */

			case 3: /* Mouse without wheel */
				wacom->tool[0] = BTN_TOOL_MOUSE;
				id = CURSOR_DEVICE_ID;
				input_report_key(dev, BTN_LEFT, data[1] & 0x01);
				input_report_key(dev, BTN_RIGHT, data[1] & 0x02);
				if (wacom->features->type == WACOM_G4)
					input_report_abs(dev, ABS_DISTANCE, data[6]);
				else
					input_report_abs(dev, ABS_DISTANCE, data[7]);
				break;
		}
	}

	if (data[1] & 0x90) {
		x = le16_to_cpu(*(__le16 *) &data[2]);
		y = le16_to_cpu(*(__le16 *) &data[4]);
		input_report_abs(dev, ABS_X, x);
		input_report_abs(dev, ABS_Y, y);
		if (wacom->tool[0] != BTN_TOOL_MOUSE) {
			input_report_abs(dev, ABS_PRESSURE, data[6] | ((data[7] & 0x01) << 8));
			input_report_key(dev, BTN_TOUCH, data[1] & 0x01);
			input_report_key(dev, BTN_STYLUS, data[1] & 0x02);
			input_report_key(dev, BTN_STYLUS2, data[1] & 0x04);
		}
	}

	input_report_key(dev, wacom->tool[0], (data[1] & 0x10) ? id : 0);
	input_sync(dev);

	/* send pad data */
	if (wacom->features->type == WACOM_G4) {
		/* fist time sending pad data */
		if (wacom->tool[1] != BTN_TOOL_FINGER) {
			wacom->id[1] = 0;
			wacom->serial[1] = (data[7] & 0x38) >> 2;
		}
		if (data[7] & 0xf8) {
			input_report_key(dev, BTN_0, (data[7] & 0x40));
			input_report_key(dev, BTN_4, (data[7] & 0x80));
			if (((data[7] & 0x38) >> 2) == (wacom->serial[1] & 0x0e))
				/* alter REL_WHEEL value so X apps can get it */
				wacom->serial[1] += (wacom->serial[1] & 0x01) ? -1 : 1;
			else
				 wacom->serial[1] = (data[7] & 0x38 ) >> 2;

			/* don't alter the value when there is no wheel event */
			if (wacom->serial[1] == 1)
				wacom->serial[1] = 0;
			rw = wacom->serial[1];
			rw = (rw & 0x08) ? -(rw & 0x07) : (rw & 0x07);
			input_report_rel(dev, REL_WHEEL, rw);
			wacom->tool[1] = BTN_TOOL_FINGER;
			wacom->id[1] = data[7] & 0xf8;
			input_report_key(dev, wacom->tool[1], 0xf0);
			input_event(dev, EV_MSC, MSC_SERIAL, 0xf0);
		} else if (wacom->id[1]) {
			wacom->id[1] = 0;
			wacom->serial[1] = 0;
			input_report_key(dev, wacom->tool[1], 0);
			input_event(dev, EV_MSC, MSC_SERIAL, 0xf0);
		}
		input_sync(dev);
	}
 exit:
	retval = usb_submit_urb (urb, GFP_ATOMIC);
	if (retval)
		err ("%s - usb_submit_urb failed with result %d",
		     __FUNCTION__, retval);
}

static int wacom_intuos_inout(struct urb *urb)
{
	struct wacom *wacom = urb->context;
	unsigned char *data = wacom->data;
	struct input_dev *dev = wacom->dev;
	int idx;

	/* tool number */
	idx = data[1] & 0x01;

	/* Enter report */
	if ((data[1] & 0xfc) == 0xc0) {
		/* serial number of the tool */
		wacom->serial[idx] = ((data[3] & 0x0f) << 28) +
			(data[4] << 20) + (data[5] << 12) +
			(data[6] << 4) + (data[7] >> 4);

		wacom->id[idx] = (data[2] << 4) | (data[3] >> 4);
		switch (wacom->id[idx]) {
			case 0x812: /* Inking pen */
			case 0x801: /* Intuos3 Inking pen */
			case 0x012:
				wacom->tool[idx] = BTN_TOOL_PENCIL;
				break;
			case 0x822: /* Pen */
			case 0x842:
			case 0x852:
			case 0x823: /* Intuos3 Grip Pen */
			case 0x813: /* Intuos3 Classic Pen */
			case 0x885: /* Intuos3 Marker Pen */
			case 0x022:
				wacom->tool[idx] = BTN_TOOL_PEN;
				break;
			case 0x832: /* Stroke pen */
			case 0x032:
				wacom->tool[idx] = BTN_TOOL_BRUSH;
				break;
			case 0x007: /* Mouse 4D and 2D */
		        case 0x09c:
			case 0x094:
			case 0x017: /* Intuos3 2D Mouse */
				wacom->tool[idx] = BTN_TOOL_MOUSE;
				break;
			case 0x096: /* Lens cursor */
			case 0x097: /* Intuos3 Lens cursor */
				wacom->tool[idx] = BTN_TOOL_LENS;
				break;
			case 0x82a: /* Eraser */
			case 0x85a:
		        case 0x91a:
			case 0xd1a:
			case 0x0fa:
			case 0x82b: /* Intuos3 Grip Pen Eraser */
			case 0x81b: /* Intuos3 Classic Pen Eraser */
			case 0x91b: /* Intuos3 Airbrush Eraser */
				wacom->tool[idx] = BTN_TOOL_RUBBER;
				break;
			case 0xd12:
			case 0x912:
			case 0x112:
			case 0x913: /* Intuos3 Airbrush */
				wacom->tool[idx] = BTN_TOOL_AIRBRUSH;
				break;
			default: /* Unknown tool */
				wacom->tool[idx] = BTN_TOOL_PEN;
		}
		input_report_key(dev, wacom->tool[idx], wacom->id[idx]);
		input_event(dev, EV_MSC, MSC_SERIAL, wacom->serial[idx]);
		input_sync(dev);
		return 1;
	}

	/* Exit report */
	if ((data[1] & 0xfe) == 0x80) {
		input_report_key(dev, wacom->tool[idx], 0);
		input_event(dev, EV_MSC, MSC_SERIAL, wacom->serial[idx]);
		input_sync(dev);
		return 1;
	}

	return 0;
}

static void wacom_intuos_general(struct urb *urb)
{
	struct wacom *wacom = urb->context;
	unsigned char *data = wacom->data;
	struct input_dev *dev = wacom->dev;
	unsigned int t;

	/* general pen packet */
	if ((data[1] & 0xb8) == 0xa0) {
		t = (data[6] << 2) | ((data[7] >> 6) & 3);
		input_report_abs(dev, ABS_PRESSURE, t);
		input_report_abs(dev, ABS_TILT_X,
				((data[7] << 1) & 0x7e) | (data[8] >> 7));
		input_report_abs(dev, ABS_TILT_Y, data[8] & 0x7f);
		input_report_key(dev, BTN_STYLUS, data[1] & 2);
		input_report_key(dev, BTN_STYLUS2, data[1] & 4);
		input_report_key(dev, BTN_TOUCH, t > 10);
	}

	/* airbrush second packet */
	if ((data[1] & 0xbc) == 0xb4) {
		input_report_abs(dev, ABS_WHEEL,
				(data[6] << 2) | ((data[7] >> 6) & 3));
		input_report_abs(dev, ABS_TILT_X,
				((data[7] << 1) & 0x7e) | (data[8] >> 7));
		input_report_abs(dev, ABS_TILT_Y, data[8] & 0x7f);
	}
	return;
}

static void wacom_intuos_irq(struct urb *urb, struct pt_regs *regs)
{
	struct wacom *wacom = urb->context;
	unsigned char *data = wacom->data;
	struct input_dev *dev = wacom->dev;
	unsigned int t;
	int idx;
	int retval;

	switch (urb->status) {
	case 0:
		/* success */
		break;
	case -ECONNRESET:
	case -ENOENT:
	case -ESHUTDOWN:
		/* this urb is terminated, clean up */
		dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
		return;
	default:
		dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
		goto exit;
	}

	if (data[0] != 2 && data[0] != 5 && data[0] != 6 && data[0] != 12) {
		dbg("wacom_intuos_irq: received unknown report #%d", data[0]);
		goto exit;
	}

	input_regs(dev, regs);

	/* tool number */
	idx = data[1] & 0x01;

	/* pad packets. Works as a second tool and is always in prox */
	if (data[0] == 12) {
		/* initiate the pad as a device */
		if (wacom->tool[1] != BTN_TOOL_FINGER) {
			wacom->tool[1] = BTN_TOOL_FINGER;
			input_report_key(dev, wacom->tool[1], 1);
		}
		input_report_key(dev, BTN_0, (data[5] & 0x01));
		input_report_key(dev, BTN_1, (data[5] & 0x02));
		input_report_key(dev, BTN_2, (data[5] & 0x04));
		input_report_key(dev, BTN_3, (data[5] & 0x08));
		input_report_key(dev, BTN_4, (data[6] & 0x01));
		input_report_key(dev, BTN_5, (data[6] & 0x02));
		input_report_key(dev, BTN_6, (data[6] & 0x04));
		input_report_key(dev, BTN_7, (data[6] & 0x08));
		input_report_abs(dev, ABS_RX, ((data[1] & 0x1f) << 8) | data[2]);
		input_report_abs(dev, ABS_RY, ((data[3] & 0x1f) << 8) | data[4]);
		input_event(dev, EV_MSC, MSC_SERIAL, 0xffffffff);
		input_sync(dev);
		goto exit;
	}

	/* process in/out prox events */
	if (wacom_intuos_inout(urb))
		goto exit;

	/* Cintiq doesn't send data when RDY bit isn't set */
	if ((wacom->features->type == CINTIQ) && !(data[1] & 0x40))
		goto exit;

	if (wacom->features->type >= INTUOS3) {
		input_report_abs(dev, ABS_X, (data[2] << 9) | (data[3] << 1) | ((data[9] >> 1) & 1));
		input_report_abs(dev, ABS_Y, (data[4] << 9) | (data[5] << 1) | (data[9] & 1));
		input_report_abs(dev, ABS_DISTANCE, ((data[9] >> 2) & 0x3f));
	} else {
		input_report_abs(dev, ABS_X, be16_to_cpu(*(__be16 *) &data[2]));
		input_report_abs(dev, ABS_Y, be16_to_cpu(*(__be16 *) &data[4]));
		input_report_abs(dev, ABS_DISTANCE, ((data[9] >> 3) & 0x1f));
	}

	/* process general packets */
	wacom_intuos_general(urb);

	/* 4D mouse, 2D mouse, marker pen rotation, or Lens cursor packets */
	if ((data[1] & 0xbc) == 0xa8 || (data[1] & 0xbe) == 0xb0) {

		if (data[1] & 0x02) {
			/* Rotation packet */
			if (wacom->features->type >= INTUOS3) {
				/* I3 marker pen rotation reported as wheel
				 * due to valuator limitation
				 */
				t = (data[6] << 3) | ((data[7] >> 5) & 7);
				t = (data[7] & 0x20) ? ((t > 900) ? ((t-1) / 2 - 1350) :
					((t-1) / 2 + 450)) : (450 - t / 2) ;
				input_report_abs(dev, ABS_WHEEL, t);
			} else {
				/* 4D mouse rotation packet */
				t = (data[6] << 3) | ((data[7] >> 5) & 7);
				input_report_abs(dev, ABS_RZ, (data[7] & 0x20) ?
					((t - 1) / 2) : -t / 2);
			}

		} else if (!(data[1] & 0x10) && wacom->features->type < INTUOS3) {
			/* 4D mouse packet */
			input_report_key(dev, BTN_LEFT,   data[8] & 0x01);
			input_report_key(dev, BTN_MIDDLE, data[8] & 0x02);
			input_report_key(dev, BTN_RIGHT,  data[8] & 0x04);

			input_report_key(dev, BTN_SIDE,   data[8] & 0x20);
			input_report_key(dev, BTN_EXTRA,  data[8] & 0x10);
			t = (data[6] << 2) | ((data[7] >> 6) & 3);
			input_report_abs(dev, ABS_THROTTLE, (data[8] & 0x08) ? -t : t);

		} else if (wacom->tool[idx] == BTN_TOOL_MOUSE) {
			/* 2D mouse packet */
			input_report_key(dev, BTN_LEFT,   data[8] & 0x04);
			input_report_key(dev, BTN_MIDDLE, data[8] & 0x08);
			input_report_key(dev, BTN_RIGHT,  data[8] & 0x10);
			input_report_rel(dev, REL_WHEEL, ((data[8] & 0x02) >> 1)
						 - (data[8] & 0x01));

			/* I3 2D mouse side buttons */
			if (wacom->features->type == INTUOS3) {
				input_report_key(dev, BTN_SIDE,   data[8] & 0x40);
				input_report_key(dev, BTN_EXTRA,  data[8] & 0x20);
			}

		} else if (wacom->features->type < INTUOS3) {
			/* Lens cursor packets */
			input_report_key(dev, BTN_LEFT,   data[8] & 0x01);
			input_report_key(dev, BTN_MIDDLE, data[8] & 0x02);
			input_report_key(dev, BTN_RIGHT,  data[8] & 0x04);
			input_report_key(dev, BTN_SIDE,   data[8] & 0x10);
			input_report_key(dev, BTN_EXTRA,  data[8] & 0x08);
		}
	}

	input_report_key(dev, wacom->tool[idx], wacom->id[idx]);
	input_event(dev, EV_MSC, MSC_SERIAL, wacom->serial[idx]);
	input_sync(dev);

exit:
	retval = usb_submit_urb (urb, GFP_ATOMIC);
	if (retval)
		err ("%s - usb_submit_urb failed with result %d",
		    __FUNCTION__, retval);
}

static struct wacom_features wacom_features[] = {
	{ "Wacom Penpartner",    7,   5040,  3780,  255, 32, PENPARTNER, wacom_penpartner_irq },
        { "Wacom Graphire",      8,  10206,  7422,  511, 32, GRAPHIRE,   wacom_graphire_irq },
	{ "Wacom Graphire2 4x5", 8,  10206,  7422,  511, 32, GRAPHIRE,   wacom_graphire_irq },
	{ "Wacom Graphire2 5x7", 8,  13918, 10206,  511, 32, GRAPHIRE,   wacom_graphire_irq },
	{ "Wacom Graphire3",     8,  10208,  7424,  511, 32, GRAPHIRE,   wacom_graphire_irq },
	{ "Wacom Graphire3 6x8", 8,  16704, 12064,  511, 32, GRAPHIRE,   wacom_graphire_irq },
	{ "Wacom Graphire4 4x5", 8,  10208,  7424,  511, 32, WACOM_G4,	 wacom_graphire_irq },
	{ "Wacom Graphire4 6x8", 8,  16704, 12064,  511, 32, WACOM_G4,	 wacom_graphire_irq },
	{ "Wacom Volito",        8,   5104,  3712,  511, 32, GRAPHIRE,   wacom_graphire_irq },
	{ "Wacom PenStation2",   8,   3250,  2320,  255, 32, GRAPHIRE,   wacom_graphire_irq },
	{ "Wacom Volito2 4x5",   8,   5104,  3712,  511, 32, GRAPHIRE,   wacom_graphire_irq },
	{ "Wacom Volito2 2x3",   8,   3248,  2320,  511, 32, GRAPHIRE,   wacom_graphire_irq },
	{ "Wacom PenPartner2",   8,   3250,  2320,  255, 32, GRAPHIRE,   wacom_graphire_irq },
	{ "Wacom Intuos 4x5",   10,  12700, 10600, 1023, 15, INTUOS,     wacom_intuos_irq },
	{ "Wacom Intuos 6x8",   10,  20320, 16240, 1023, 15, INTUOS,     wacom_intuos_irq },
	{ "Wacom Intuos 9x12",  10,  30480, 24060, 1023, 15, INTUOS,     wacom_intuos_irq },
	{ "Wacom Intuos 12x12", 10,  30480, 31680, 1023, 15, INTUOS,     wacom_intuos_irq },
	{ "Wacom Intuos 12x18", 10,  45720, 31680, 1023, 15, INTUOS,     wacom_intuos_irq },
	{ "Wacom PL400",         8,   5408,  4056,  255, 32, PL,         wacom_pl_irq },
	{ "Wacom PL500",         8,   6144,  4608,  255, 32, PL,         wacom_pl_irq },
	{ "Wacom PL600",         8,   6126,  4604,  255, 32, PL,         wacom_pl_irq },
	{ "Wacom PL600SX",       8,   6260,  5016,  255, 32, PL,         wacom_pl_irq },
	{ "Wacom PL550",         8,   6144,  4608,  511, 32, PL,         wacom_pl_irq },
	{ "Wacom PL800",         8,   7220,  5780,  511, 32, PL,         wacom_pl_irq },
	{ "Wacom PL700",         8,   6758,  5406,  511, 32, PL,	 wacom_pl_irq },
	{ "Wacom PL510",         8,   6282,  4762,  511, 32, PL,	 wacom_pl_irq },
	{ "Wacom PL710",         8,  34080, 27660,  511, 32, PL,	 wacom_pl_irq },
	{ "Wacom DTF720",        8,   6858,  5506,  511, 32, PL,	 wacom_pl_irq },
	{ "Wacom Cintiq Partner",8,  20480, 15360,  511, 32, PL,         wacom_ptu_irq },
	{ "Wacom Intuos2 4x5",   10, 12700, 10600, 1023, 15, INTUOS,     wacom_intuos_irq },
	{ "Wacom Intuos2 6x8",   10, 20320, 16240, 1023, 15, INTUOS,     wacom_intuos_irq },
	{ "Wacom Intuos2 9x12",  10, 30480, 24060, 1023, 15, INTUOS,     wacom_intuos_irq },
	{ "Wacom Intuos2 12x12", 10, 30480, 31680, 1023, 15, INTUOS,     wacom_intuos_irq },
	{ "Wacom Intuos2 12x18", 10, 45720, 31680, 1023, 15, INTUOS,     wacom_intuos_irq },
	{ "Wacom Intuos3 4x5",   10, 25400, 20320, 1023, 15, INTUOS3,    wacom_intuos_irq },
	{ "Wacom Intuos3 6x8",   10, 40640, 30480, 1023, 15, INTUOS3,    wacom_intuos_irq },
	{ "Wacom Intuos3 9x12",  10, 60960, 45720, 1023, 15, INTUOS3,    wacom_intuos_irq },
	{ "Wacom Intuos3 6x11",  10, 54204, 31750, 1023, 15, INTUOS3,    wacom_intuos_irq },
	{ "Wacom Cintiq 21UX",   10, 87200, 65600, 1023, 15, CINTIQ,     wacom_intuos_irq },
	{ "Wacom Intuos2 6x8",   10, 20320, 16240, 1023, 15, INTUOS,     wacom_intuos_irq },
	{ }
};

static struct usb_device_id wacom_ids[] = {
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x00) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x10) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x11) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x12) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x13) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x14) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x15) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x16) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x60) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x61) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x62) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x63) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x64) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x20) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x21) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x22) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x23) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x24) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x30) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x31) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x32) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x33) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x34) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x35) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x37) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x38) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x39) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0xC0) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x03) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x41) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x42) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x43) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x44) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x45) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0xB0) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0xB1) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0xB2) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0xB5) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x3F) },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x47) },
	{ }
};

MODULE_DEVICE_TABLE(usb, wacom_ids);

static int wacom_open(struct input_dev *dev)
{
	struct wacom *wacom = dev->private;

	wacom->irq->dev = wacom->usbdev;
	if (usb_submit_urb(wacom->irq, GFP_KERNEL))
		return -EIO;

	return 0;
}

static void wacom_close(struct input_dev *dev)
{
	struct wacom *wacom = dev->private;

	usb_kill_urb(wacom->irq);
}

static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
	struct usb_device *dev = interface_to_usbdev(intf);
	struct usb_endpoint_descriptor *endpoint;
	struct wacom *wacom;
	struct input_dev *input_dev;
	char rep_data[2] = {0x02, 0x02};

	wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
	input_dev = input_allocate_device();
	if (!wacom || !input_dev)
		goto fail1;

	wacom->data = usb_buffer_alloc(dev, 10, GFP_KERNEL, &wacom->data_dma);
	if (!wacom->data)
		goto fail1;

	wacom->irq = usb_alloc_urb(0, GFP_KERNEL);
	if (!wacom->irq)
		goto fail2;

	wacom->usbdev = dev;
	wacom->dev = input_dev;
	usb_make_path(dev, wacom->phys, sizeof(wacom->phys));
	strlcat(wacom->phys, "/input0", sizeof(wacom->phys));

	wacom->features = wacom_features + (id - wacom_ids);
	if (wacom->features->pktlen > 10)
		BUG();

	input_dev->name = wacom->features->name;
	usb_to_input_id(dev, &input_dev->id);

	input_dev->cdev.dev = &intf->dev;
	input_dev->private = wacom;
	input_dev->open = wacom_open;
	input_dev->close = wacom_close;

	input_dev->evbit[0] |= BIT(EV_KEY) | BIT(EV_ABS);
	input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_PEN) | BIT(BTN_TOUCH) | BIT(BTN_STYLUS);
	input_set_abs_params(input_dev, ABS_X, 0, wacom->features->x_max, 4, 0);
	input_set_abs_params(input_dev, ABS_Y, 0, wacom->features->y_max, 4, 0);
	input_set_abs_params(input_dev, ABS_PRESSURE, 0, wacom->features->pressure_max, 0, 0);

	switch (wacom->features->type) {
		case WACOM_G4:
			input_dev->evbit[0] |= BIT(EV_MSC);
			input_dev->mscbit[0] |= BIT(MSC_SERIAL);
			input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_FINGER);
			input_dev->keybit[LONG(BTN_LEFT)] |= BIT(BTN_0) | BIT(BTN_1) | BIT(BTN_2) | BIT(BTN_3) | BIT(BTN_4) | BIT(BTN_5) | BIT(BTN_6) | BIT(BTN_7);
			/* fall through */

		case GRAPHIRE:
			input_dev->evbit[0] |= BIT(EV_REL);
			input_dev->relbit[0] |= BIT(REL_WHEEL);
			input_dev->keybit[LONG(BTN_LEFT)] |= BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE);
			input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_RUBBER) | BIT(BTN_TOOL_MOUSE) | BIT(BTN_STYLUS2);
			input_set_abs_params(input_dev, ABS_DISTANCE, 0, wacom->features->distance_max, 0, 0);
			break;

		case INTUOS3:
		case CINTIQ:
			input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_FINGER);
			input_dev->keybit[LONG(BTN_LEFT)] |= BIT(BTN_0) | BIT(BTN_1) | BIT(BTN_2) | BIT(BTN_3) | BIT(BTN_4) | BIT(BTN_5) | BIT(BTN_6) | BIT(BTN_7);
			input_set_abs_params(input_dev, ABS_RX, 0, 4097, 0, 0);
			input_set_abs_params(input_dev, ABS_RY, 0, 4097, 0, 0);
			/* fall through */

		case INTUOS:
			input_dev->evbit[0] |= BIT(EV_MSC) | BIT(EV_REL);
			input_dev->mscbit[0] |= BIT(MSC_SERIAL);
			input_dev->relbit[0] |= BIT(REL_WHEEL);
			input_dev->keybit[LONG(BTN_LEFT)] |= BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE) | BIT(BTN_SIDE) | BIT(BTN_EXTRA);
			input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_RUBBER) | BIT(BTN_TOOL_MOUSE)	| BIT(BTN_TOOL_BRUSH)
							  | BIT(BTN_TOOL_PENCIL) | BIT(BTN_TOOL_AIRBRUSH) | BIT(BTN_TOOL_LENS) | BIT(BTN_STYLUS2);
			input_set_abs_params(input_dev, ABS_DISTANCE, 0, wacom->features->distance_max, 0, 0);
			input_set_abs_params(input_dev, ABS_WHEEL, 0, 1023, 0, 0);
			input_set_abs_params(input_dev, ABS_TILT_X, 0, 127, 0, 0);
			input_set_abs_params(input_dev, ABS_TILT_Y, 0, 127, 0, 0);
			input_set_abs_params(input_dev, ABS_RZ, -900, 899, 0, 0);
			input_set_abs_params(input_dev, ABS_THROTTLE, -1023, 1023, 0, 0);
			break;

		case PL:
			input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_STYLUS2) | BIT(BTN_TOOL_RUBBER);
			break;
	}

	endpoint = &intf->cur_altsetting->endpoint[0].desc;

	if (wacom->features->pktlen > 10)
		BUG();

	usb_fill_int_urb(wacom->irq, dev,
			 usb_rcvintpipe(dev, endpoint->bEndpointAddress),
			 wacom->data, wacom->features->pktlen,
			 wacom->features->irq, wacom, endpoint->bInterval);
	wacom->irq->transfer_dma = wacom->data_dma;
	wacom->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;

	input_register_device(wacom->dev);

	/* ask the tablet to report tablet data */
	usb_set_report(intf, 3, 2, rep_data, 2);
	/* repeat once (not sure why the first call often fails) */
	usb_set_report(intf, 3, 2, rep_data, 2);

	usb_set_intfdata(intf, wacom);
	return 0;

fail2:	usb_buffer_free(dev, 10, wacom->data, wacom->data_dma);
fail1:	input_free_device(input_dev);
	kfree(wacom);
	return -ENOMEM;
}

static void wacom_disconnect(struct usb_interface *intf)
{
	struct wacom *wacom = usb_get_intfdata (intf);

	usb_set_intfdata(intf, NULL);
	if (wacom) {
		usb_kill_urb(wacom->irq);
		input_unregister_device(wacom->dev);
		usb_free_urb(wacom->irq);
		usb_buffer_free(interface_to_usbdev(intf), 10, wacom->data, wacom->data_dma);
		kfree(wacom);
	}
}

static struct usb_driver wacom_driver = {
	.name =		"wacom",
	.probe =	wacom_probe,
	.disconnect =	wacom_disconnect,
	.id_table =	wacom_ids,
};

static int __init wacom_init(void)
{
	int result = usb_register(&wacom_driver);
	if (result == 0)
		info(DRIVER_VERSION ":" DRIVER_DESC);
	return result;
}

static void __exit wacom_exit(void)
{
	usb_deregister(&wacom_driver);
}

module_init(wacom_init);
module_exit(wacom_exit);