summaryrefslogtreecommitdiff
path: root/drivers/hid/hid-lenovo.c
blob: 7c1b33be9d1343e90a75651daa2b9afc163c5656 (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
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  HID driver for Lenovo:
 *  - ThinkPad USB Keyboard with TrackPoint (tpkbd)
 *  - ThinkPad Compact Bluetooth Keyboard with TrackPoint (cptkbd)
 *  - ThinkPad Compact USB Keyboard with TrackPoint (cptkbd)
 *  - ThinkPad TrackPoint Keyboard II USB/Bluetooth (cptkbd/tpIIkbd)
 *
 *  Copyright (c) 2012 Bernhard Seibold
 *  Copyright (c) 2014 Jamie Lentin <jm@lentin.co.uk>
 *
 * Linux IBM/Lenovo Scrollpoint mouse driver:
 * - IBM Scrollpoint III
 * - IBM Scrollpoint Pro
 * - IBM Scrollpoint Optical
 * - IBM Scrollpoint Optical 800dpi
 * - IBM Scrollpoint Optical 800dpi Pro
 * - Lenovo Scrollpoint Optical
 *
 *  Copyright (c) 2012 Peter De Wachter <pdewacht@gmail.com>
 *  Copyright (c) 2018 Peter Ganzhorn <peter.ganzhorn@gmail.com>
 */

/*
 */

#include <linux/module.h>
#include <linux/sysfs.h>
#include <linux/device.h>
#include <linux/hid.h>
#include <linux/input.h>
#include <linux/leds.h>
#include <linux/workqueue.h>

#include "hid-ids.h"

/* Userspace expects F20 for mic-mute KEY_MICMUTE does not work */
#define LENOVO_KEY_MICMUTE KEY_F20

struct lenovo_drvdata {
	u8 led_report[3]; /* Must be first for proper alignment */
	int led_state;
	struct mutex led_report_mutex;
	struct led_classdev led_mute;
	struct led_classdev led_micmute;
	struct work_struct fn_lock_sync_work;
	struct hid_device *hdev;
	int press_to_select;
	int dragging;
	int release_to_select;
	int select_right;
	int sensitivity;
	int press_speed;
	/* 0: Up
	 * 1: Down (undecided)
	 * 2: Scrolling
	 * 3: Patched firmware, disable workaround
	 */
	u8 middlebutton_state;
	bool fn_lock;
};

#define map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, EV_KEY, (c))

#define TP10UBKBD_LED_OUTPUT_REPORT	9

#define TP10UBKBD_FN_LOCK_LED		0x54
#define TP10UBKBD_MUTE_LED		0x64
#define TP10UBKBD_MICMUTE_LED		0x74

#define TP10UBKBD_LED_OFF		1
#define TP10UBKBD_LED_ON		2

static int lenovo_led_set_tp10ubkbd(struct hid_device *hdev, u8 led_code,
				    enum led_brightness value)
{
	struct lenovo_drvdata *data = hid_get_drvdata(hdev);
	int ret;

	mutex_lock(&data->led_report_mutex);

	data->led_report[0] = TP10UBKBD_LED_OUTPUT_REPORT;
	data->led_report[1] = led_code;
	data->led_report[2] = value ? TP10UBKBD_LED_ON : TP10UBKBD_LED_OFF;
	ret = hid_hw_raw_request(hdev, data->led_report[0], data->led_report, 3,
				 HID_OUTPUT_REPORT, HID_REQ_SET_REPORT);
	if (ret != 3) {
		if (ret != -ENODEV)
			hid_err(hdev, "Set LED output report error: %d\n", ret);

		ret = ret < 0 ? ret : -EIO;
	} else {
		ret = 0;
	}

	mutex_unlock(&data->led_report_mutex);

	return ret;
}

static void lenovo_tp10ubkbd_sync_fn_lock(struct work_struct *work)
{
	struct lenovo_drvdata *data =
		container_of(work, struct lenovo_drvdata, fn_lock_sync_work);

	lenovo_led_set_tp10ubkbd(data->hdev, TP10UBKBD_FN_LOCK_LED,
				 data->fn_lock);
}

static const __u8 lenovo_pro_dock_need_fixup_collection[] = {
	0x05, 0x88,		/* Usage Page (Vendor Usage Page 0x88)	*/
	0x09, 0x01,		/* Usage (Vendor Usage 0x01)		*/
	0xa1, 0x01,		/* Collection (Application)		*/
	0x85, 0x04,		/*  Report ID (4)			*/
	0x19, 0x00,		/*  Usage Minimum (0)			*/
	0x2a, 0xff, 0xff,	/*  Usage Maximum (65535)		*/
};

/* Broken ThinkPad TrackPoint II collection (Bluetooth mode) */
static const __u8 lenovo_tpIIbtkbd_need_fixup_collection[] = {
	0x06, 0x00, 0xFF,	/* Usage Page (Vendor Defined 0xFF00) */
	0x09, 0x01,		/* Usage (0x01) */
	0xA1, 0x01,		/* Collection (Application) */
	0x85, 0x05,		/*   Report ID (5) */
	0x1A, 0xF1, 0x00,	/*   Usage Minimum (0xF1) */
	0x2A, 0xFC, 0x00,	/*   Usage Maximum (0xFC) */
	0x15, 0x00,		/*   Logical Minimum (0) */
	0x25, 0x01,		/*   Logical Maximum (1) */
	0x75, 0x01,		/*   Report Size (1) */
	0x95, 0x0D,		/*   Report Count (13) */
	0x81, 0x02,		/*   Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position) */
	0x95, 0x03,		/*   Report Count (3) */
	0x81, 0x01,		/*   Input (Const,Array,Abs,No Wrap,Linear,Preferred State,No Null Position) */
};

static __u8 *lenovo_report_fixup(struct hid_device *hdev, __u8 *rdesc,
		unsigned int *rsize)
{
	switch (hdev->product) {
	case USB_DEVICE_ID_LENOVO_TPPRODOCK:
		/* the fixups that need to be done:
		 *   - get a reasonable usage max for the vendor collection
		 *     0x8801 from the report ID 4
		 */
		if (*rsize >= 153 &&
		    memcmp(&rdesc[140], lenovo_pro_dock_need_fixup_collection,
			  sizeof(lenovo_pro_dock_need_fixup_collection)) == 0) {
			rdesc[151] = 0x01;
			rdesc[152] = 0x00;
		}
		break;
	case USB_DEVICE_ID_LENOVO_TPIIBTKBD:
		if (*rsize >= 263 &&
		    memcmp(&rdesc[234], lenovo_tpIIbtkbd_need_fixup_collection,
			  sizeof(lenovo_tpIIbtkbd_need_fixup_collection)) == 0) {
			rdesc[244] = 0x00; /* usage minimum = 0x00 */
			rdesc[247] = 0xff; /* usage maximum = 0xff */
			rdesc[252] = 0xff; /* logical maximum = 0xff */
			rdesc[254] = 0x08; /* report size = 0x08 */
			rdesc[256] = 0x01; /* report count = 0x01 */
			rdesc[258] = 0x00; /* input = 0x00 */
			rdesc[260] = 0x01; /* report count (2) = 0x01 */
		}
		break;
	}
	return rdesc;
}

static int lenovo_input_mapping_tpkbd(struct hid_device *hdev,
		struct hid_input *hi, struct hid_field *field,
		struct hid_usage *usage, unsigned long **bit, int *max)
{
	if (usage->hid == (HID_UP_BUTTON | 0x0010)) {
		/* This sub-device contains trackpoint, mark it */
		hid_set_drvdata(hdev, (void *)1);
		map_key_clear(LENOVO_KEY_MICMUTE);
		return 1;
	}
	return 0;
}

static int lenovo_input_mapping_cptkbd(struct hid_device *hdev,
		struct hid_input *hi, struct hid_field *field,
		struct hid_usage *usage, unsigned long **bit, int *max)
{
	/* HID_UP_LNVENDOR = USB, HID_UP_MSVENDOR = BT */
	if ((usage->hid & HID_USAGE_PAGE) == HID_UP_MSVENDOR ||
	    (usage->hid & HID_USAGE_PAGE) == HID_UP_LNVENDOR) {
		switch (usage->hid & HID_USAGE) {
		case 0x00f1: /* Fn-F4: Mic mute */
			map_key_clear(LENOVO_KEY_MICMUTE);
			return 1;
		case 0x00f2: /* Fn-F5: Brightness down */
			map_key_clear(KEY_BRIGHTNESSDOWN);
			return 1;
		case 0x00f3: /* Fn-F6: Brightness up */
			map_key_clear(KEY_BRIGHTNESSUP);
			return 1;
		case 0x00f4: /* Fn-F7: External display (projector) */
			map_key_clear(KEY_SWITCHVIDEOMODE);
			return 1;
		case 0x00f5: /* Fn-F8: Wireless */
			map_key_clear(KEY_WLAN);
			return 1;
		case 0x00f6: /* Fn-F9: Control panel */
			map_key_clear(KEY_CONFIG);
			return 1;
		case 0x00f8: /* Fn-F11: View open applications (3 boxes) */
			map_key_clear(KEY_SCALE);
			return 1;
		case 0x00f9: /* Fn-F12: Open My computer (6 boxes) USB-only */
			/* NB: This mapping is invented in raw_event below */
			map_key_clear(KEY_FILE);
			return 1;
		case 0x00fa: /* Fn-Esc: Fn-lock toggle */
			map_key_clear(KEY_FN_ESC);
			return 1;
		case 0x00fb: /* Middle mouse button (in native mode) */
			map_key_clear(BTN_MIDDLE);
			return 1;
		}
	}

	/* Compatibility middle/wheel mappings should be ignored */
	if (usage->hid == HID_GD_WHEEL)
		return -1;
	if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON &&
			(usage->hid & HID_USAGE) == 0x003)
		return -1;
	if ((usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER &&
			(usage->hid & HID_USAGE) == 0x238)
		return -1;

	/* Map wheel emulation reports: 0xffa1 = USB, 0xff10 = BT */
	if ((usage->hid & HID_USAGE_PAGE) == 0xff100000 ||
	    (usage->hid & HID_USAGE_PAGE) == 0xffa10000) {
		field->flags |= HID_MAIN_ITEM_RELATIVE | HID_MAIN_ITEM_VARIABLE;
		field->logical_minimum = -127;
		field->logical_maximum = 127;

		switch (usage->hid & HID_USAGE) {
		case 0x0000:
			hid_map_usage(hi, usage, bit, max, EV_REL, REL_HWHEEL);
			return 1;
		case 0x0001:
			hid_map_usage(hi, usage, bit, max, EV_REL, REL_WHEEL);
			return 1;
		default:
			return -1;
		}
	}

	return 0;
}

static int lenovo_input_mapping_tpIIkbd(struct hid_device *hdev,
		struct hid_input *hi, struct hid_field *field,
		struct hid_usage *usage, unsigned long **bit, int *max)
{
	/*
	 * 0xff0a0000 = USB, HID_UP_MSVENDOR = BT.
	 *
	 * In BT mode, there are two HID_UP_MSVENDOR pages.
	 * Use only the page that contains report ID == 5.
	 */
	if (((usage->hid & HID_USAGE_PAGE) == 0xff0a0000 ||
	    (usage->hid & HID_USAGE_PAGE) == HID_UP_MSVENDOR) &&
	    field->report->id == 5) {
		switch (usage->hid & HID_USAGE) {
		case 0x00bb: /* Fn-F4: Mic mute */
			map_key_clear(LENOVO_KEY_MICMUTE);
			return 1;
		case 0x00c3: /* Fn-F5: Brightness down */
			map_key_clear(KEY_BRIGHTNESSDOWN);
			return 1;
		case 0x00c4: /* Fn-F6: Brightness up */
			map_key_clear(KEY_BRIGHTNESSUP);
			return 1;
		case 0x00c1: /* Fn-F8: Notification center */
			map_key_clear(KEY_NOTIFICATION_CENTER);
			return 1;
		case 0x00bc: /* Fn-F9: Control panel */
			map_key_clear(KEY_CONFIG);
			return 1;
		case 0x00b6: /* Fn-F10: Bluetooth */
			map_key_clear(KEY_BLUETOOTH);
			return 1;
		case 0x00b7: /* Fn-F11: Keyboard config */
			map_key_clear(KEY_KEYBOARD);
			return 1;
		case 0x00b8: /* Fn-F12: User function */
			map_key_clear(KEY_PROG1);
			return 1;
		case 0x00b9: /* Fn-PrtSc: Snipping tool */
			map_key_clear(KEY_SELECTIVE_SCREENSHOT);
			return 1;
		case 0x00b5: /* Fn-Esc: Fn-lock toggle */
			map_key_clear(KEY_FN_ESC);
			return 1;
		}
	}

	if ((usage->hid & HID_USAGE_PAGE) == 0xffa00000) {
		switch (usage->hid & HID_USAGE) {
		case 0x00fb: /* Middle mouse (in native USB mode) */
			map_key_clear(BTN_MIDDLE);
			return 1;
		}
	}

	if ((usage->hid & HID_USAGE_PAGE) == HID_UP_MSVENDOR &&
	    field->report->id == 21) {
		switch (usage->hid & HID_USAGE) {
		case 0x0004: /* Middle mouse (in native Bluetooth mode) */
			map_key_clear(BTN_MIDDLE);
			return 1;
		}
	}

	/* Compatibility middle/wheel mappings should be ignored */
	if (usage->hid == HID_GD_WHEEL)
		return -1;
	if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON &&
			(usage->hid & HID_USAGE) == 0x003)
		return -1;
	if ((usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER &&
			(usage->hid & HID_USAGE) == 0x238)
		return -1;

	/* Map wheel emulation reports: 0xff10 */
	if ((usage->hid & HID_USAGE_PAGE) == 0xff100000) {
		field->flags |= HID_MAIN_ITEM_RELATIVE | HID_MAIN_ITEM_VARIABLE;
		field->logical_minimum = -127;
		field->logical_maximum = 127;

		switch (usage->hid & HID_USAGE) {
		case 0x0000:
			hid_map_usage(hi, usage, bit, max, EV_REL, REL_HWHEEL);
			return 1;
		case 0x0001:
			hid_map_usage(hi, usage, bit, max, EV_REL, REL_WHEEL);
			return 1;
		default:
			return -1;
		}
	}

	return 0;
}

static int lenovo_input_mapping_scrollpoint(struct hid_device *hdev,
		struct hid_input *hi, struct hid_field *field,
		struct hid_usage *usage, unsigned long **bit, int *max)
{
	if (usage->hid == HID_GD_Z) {
		hid_map_usage(hi, usage, bit, max, EV_REL, REL_HWHEEL);
		return 1;
	}
	return 0;
}

static int lenovo_input_mapping_tp10_ultrabook_kbd(struct hid_device *hdev,
		struct hid_input *hi, struct hid_field *field,
		struct hid_usage *usage, unsigned long **bit, int *max)
{
	/*
	 * The ThinkPad 10 Ultrabook Keyboard uses 0x000c0001 usage for
	 * a bunch of keys which have no standard consumer page code.
	 */
	if (usage->hid == 0x000c0001) {
		switch (usage->usage_index) {
		case 8: /* Fn-Esc: Fn-lock toggle */
			map_key_clear(KEY_FN_ESC);
			return 1;
		case 9: /* Fn-F4: Mic mute */
			map_key_clear(LENOVO_KEY_MICMUTE);
			return 1;
		case 10: /* Fn-F7: Control panel */
			map_key_clear(KEY_CONFIG);
			return 1;
		case 11: /* Fn-F8: Search (magnifier glass) */
			map_key_clear(KEY_SEARCH);
			return 1;
		case 12: /* Fn-F10: Open My computer (6 boxes) */
			map_key_clear(KEY_FILE);
			return 1;
		}
	}

	/*
	 * The Ultrabook Keyboard sends a spurious F23 key-press when resuming
	 * from suspend and it does not actually have a F23 key, ignore it.
	 */
	if (usage->hid == 0x00070072)
		return -1;

	return 0;
}

static int lenovo_input_mapping_x1_tab_kbd(struct hid_device *hdev,
		struct hid_input *hi, struct hid_field *field,
		struct hid_usage *usage, unsigned long **bit, int *max)
{
	/*
	 * The ThinkPad X1 Tablet Thin Keyboard uses 0x000c0001 usage for
	 * a bunch of keys which have no standard consumer page code.
	 */
	if (usage->hid == 0x000c0001) {
		switch (usage->usage_index) {
		case 0: /* Fn-F10: Enable/disable bluetooth */
			map_key_clear(KEY_BLUETOOTH);
			return 1;
		case 1: /* Fn-F11: Keyboard settings */
			map_key_clear(KEY_KEYBOARD);
			return 1;
		case 2: /* Fn-F12: User function / Cortana */
			map_key_clear(KEY_MACRO1);
			return 1;
		case 3: /* Fn-PrtSc: Snipping tool */
			map_key_clear(KEY_SELECTIVE_SCREENSHOT);
			return 1;
		case 8: /* Fn-Esc: Fn-lock toggle */
			map_key_clear(KEY_FN_ESC);
			return 1;
		case 9: /* Fn-F4: Mute/unmute microphone */
			map_key_clear(KEY_MICMUTE);
			return 1;
		case 10: /* Fn-F9: Settings */
			map_key_clear(KEY_CONFIG);
			return 1;
		case 13: /* Fn-F7: Manage external displays */
			map_key_clear(KEY_SWITCHVIDEOMODE);
			return 1;
		case 14: /* Fn-F8: Enable/disable wifi */
			map_key_clear(KEY_WLAN);
			return 1;
		}
	}

	if (usage->hid == (HID_UP_KEYBOARD | 0x009a)) {
		map_key_clear(KEY_SYSRQ);
		return 1;
	}

	return 0;
}

static int lenovo_input_mapping(struct hid_device *hdev,
		struct hid_input *hi, struct hid_field *field,
		struct hid_usage *usage, unsigned long **bit, int *max)
{
	switch (hdev->product) {
	case USB_DEVICE_ID_LENOVO_TPKBD:
		return lenovo_input_mapping_tpkbd(hdev, hi, field,
							usage, bit, max);
	case USB_DEVICE_ID_LENOVO_CUSBKBD:
	case USB_DEVICE_ID_LENOVO_CBTKBD:
		return lenovo_input_mapping_cptkbd(hdev, hi, field,
							usage, bit, max);
	case USB_DEVICE_ID_LENOVO_TPIIUSBKBD:
	case USB_DEVICE_ID_LENOVO_TPIIBTKBD:
		return lenovo_input_mapping_tpIIkbd(hdev, hi, field,
							usage, bit, max);
	case USB_DEVICE_ID_IBM_SCROLLPOINT_III:
	case USB_DEVICE_ID_IBM_SCROLLPOINT_PRO:
	case USB_DEVICE_ID_IBM_SCROLLPOINT_OPTICAL:
	case USB_DEVICE_ID_IBM_SCROLLPOINT_800DPI_OPTICAL:
	case USB_DEVICE_ID_IBM_SCROLLPOINT_800DPI_OPTICAL_PRO:
	case USB_DEVICE_ID_LENOVO_SCROLLPOINT_OPTICAL:
		return lenovo_input_mapping_scrollpoint(hdev, hi, field,
							usage, bit, max);
	case USB_DEVICE_ID_LENOVO_TP10UBKBD:
		return lenovo_input_mapping_tp10_ultrabook_kbd(hdev, hi, field,
							       usage, bit, max);
	case USB_DEVICE_ID_LENOVO_X1_TAB:
		return lenovo_input_mapping_x1_tab_kbd(hdev, hi, field, usage, bit, max);
	default:
		return 0;
	}
}

#undef map_key_clear

/* Send a config command to the keyboard */
static int lenovo_send_cmd_cptkbd(struct hid_device *hdev,
			unsigned char byte2, unsigned char byte3)
{
	int ret;
	unsigned char *buf;

	buf = kzalloc(3, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	/*
	 * Feature report 0x13 is used for USB,
	 * output report 0x18 is used for Bluetooth.
	 * buf[0] is ignored by hid_hw_raw_request.
	 */
	buf[0] = 0x18;
	buf[1] = byte2;
	buf[2] = byte3;

	switch (hdev->product) {
	case USB_DEVICE_ID_LENOVO_CUSBKBD:
	case USB_DEVICE_ID_LENOVO_TPIIUSBKBD:
		ret = hid_hw_raw_request(hdev, 0x13, buf, 3,
					HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
		break;
	case USB_DEVICE_ID_LENOVO_CBTKBD:
	case USB_DEVICE_ID_LENOVO_TPIIBTKBD:
		ret = hid_hw_output_report(hdev, buf, 3);
		break;
	default:
		ret = -EINVAL;
		break;
	}

	kfree(buf);

	return ret < 0 ? ret : 0; /* BT returns 0, USB returns sizeof(buf) */
}

static void lenovo_features_set_cptkbd(struct hid_device *hdev)
{
	int ret;
	struct lenovo_drvdata *cptkbd_data = hid_get_drvdata(hdev);

	/*
	 * Tell the keyboard a driver understands it, and turn F7, F9, F11 into
	 * regular keys
	 */
	ret = lenovo_send_cmd_cptkbd(hdev, 0x01, 0x03);
	if (ret)
		hid_warn(hdev, "Failed to switch F7/9/11 mode: %d\n", ret);

	/* Switch middle button to native mode */
	ret = lenovo_send_cmd_cptkbd(hdev, 0x09, 0x01);
	if (ret)
		hid_warn(hdev, "Failed to switch middle button: %d\n", ret);

	ret = lenovo_send_cmd_cptkbd(hdev, 0x05, cptkbd_data->fn_lock);
	if (ret)
		hid_err(hdev, "Fn-lock setting failed: %d\n", ret);

	ret = lenovo_send_cmd_cptkbd(hdev, 0x02, cptkbd_data->sensitivity);
	if (ret)
		hid_err(hdev, "Sensitivity setting failed: %d\n", ret);
}

static ssize_t attr_fn_lock_show(struct device *dev,
		struct device_attribute *attr,
		char *buf)
{
	struct hid_device *hdev = to_hid_device(dev);
	struct lenovo_drvdata *data = hid_get_drvdata(hdev);

	return snprintf(buf, PAGE_SIZE, "%u\n", data->fn_lock);
}

static ssize_t attr_fn_lock_store(struct device *dev,
		struct device_attribute *attr,
		const char *buf,
		size_t count)
{
	struct hid_device *hdev = to_hid_device(dev);
	struct lenovo_drvdata *data = hid_get_drvdata(hdev);
	int value, ret;

	if (kstrtoint(buf, 10, &value))
		return -EINVAL;
	if (value < 0 || value > 1)
		return -EINVAL;

	data->fn_lock = !!value;

	switch (hdev->product) {
	case USB_DEVICE_ID_LENOVO_CUSBKBD:
	case USB_DEVICE_ID_LENOVO_CBTKBD:
	case USB_DEVICE_ID_LENOVO_TPIIUSBKBD:
	case USB_DEVICE_ID_LENOVO_TPIIBTKBD:
		lenovo_features_set_cptkbd(hdev);
		break;
	case USB_DEVICE_ID_LENOVO_TP10UBKBD:
	case USB_DEVICE_ID_LENOVO_X1_TAB:
		ret = lenovo_led_set_tp10ubkbd(hdev, TP10UBKBD_FN_LOCK_LED, value);
		if (ret)
			return ret;
		break;
	}

	return count;
}

static ssize_t attr_sensitivity_show_cptkbd(struct device *dev,
		struct device_attribute *attr,
		char *buf)
{
	struct hid_device *hdev = to_hid_device(dev);
	struct lenovo_drvdata *cptkbd_data = hid_get_drvdata(hdev);

	return snprintf(buf, PAGE_SIZE, "%u\n",
		cptkbd_data->sensitivity);
}

static ssize_t attr_sensitivity_store_cptkbd(struct device *dev,
		struct device_attribute *attr,
		const char *buf,
		size_t count)
{
	struct hid_device *hdev = to_hid_device(dev);
	struct lenovo_drvdata *cptkbd_data = hid_get_drvdata(hdev);
	int value;

	if (kstrtoint(buf, 10, &value) || value < 1 || value > 255)
		return -EINVAL;

	cptkbd_data->sensitivity = value;
	lenovo_features_set_cptkbd(hdev);

	return count;
}


static struct device_attribute dev_attr_fn_lock =
	__ATTR(fn_lock, S_IWUSR | S_IRUGO,
			attr_fn_lock_show,
			attr_fn_lock_store);

static struct device_attribute dev_attr_sensitivity_cptkbd =
	__ATTR(sensitivity, S_IWUSR | S_IRUGO,
			attr_sensitivity_show_cptkbd,
			attr_sensitivity_store_cptkbd);


static struct attribute *lenovo_attributes_cptkbd[] = {
	&dev_attr_fn_lock.attr,
	&dev_attr_sensitivity_cptkbd.attr,
	NULL
};

static const struct attribute_group lenovo_attr_group_cptkbd = {
	.attrs = lenovo_attributes_cptkbd,
};

static int lenovo_raw_event(struct hid_device *hdev,
			struct hid_report *report, u8 *data, int size)
{
	/*
	 * Compact USB keyboard's Fn-F12 report holds down many other keys, and
	 * its own key is outside the usage page range. Remove extra
	 * keypresses and remap to inside usage page.
	 */
	if (unlikely(hdev->product == USB_DEVICE_ID_LENOVO_CUSBKBD
			&& size == 3
			&& data[0] == 0x15
			&& data[1] == 0x94
			&& data[2] == 0x01)) {
		data[1] = 0x00;
		data[2] = 0x01;
	}

	return 0;
}

static int lenovo_event_tp10ubkbd(struct hid_device *hdev,
		struct hid_field *field, struct hid_usage *usage, __s32 value)
{
	struct lenovo_drvdata *data = hid_get_drvdata(hdev);

	if (usage->type == EV_KEY && usage->code == KEY_FN_ESC && value == 1) {
		/*
		 * The user has toggled the Fn-lock state. Toggle our own
		 * cached value of it and sync our value to the keyboard to
		 * ensure things are in sync (the sycning should be a no-op).
		 */
		data->fn_lock = !data->fn_lock;
		schedule_work(&data->fn_lock_sync_work);
	}

	return 0;
}

static int lenovo_event_cptkbd(struct hid_device *hdev,
		struct hid_field *field, struct hid_usage *usage, __s32 value)
{
	struct lenovo_drvdata *cptkbd_data = hid_get_drvdata(hdev);

	if (cptkbd_data->middlebutton_state != 3) {
		/* REL_X and REL_Y events during middle button pressed
		 * are only possible on patched, bug-free firmware
		 * so set middlebutton_state to 3
		 * to never apply workaround anymore
		 */
		if (cptkbd_data->middlebutton_state == 1 &&
				usage->type == EV_REL &&
				(usage->code == REL_X || usage->code == REL_Y)) {
			cptkbd_data->middlebutton_state = 3;
			/* send middle button press which was hold before */
			input_event(field->hidinput->input,
				EV_KEY, BTN_MIDDLE, 1);
			input_sync(field->hidinput->input);
		}

		/* "wheel" scroll events */
		if (usage->type == EV_REL && (usage->code == REL_WHEEL ||
				usage->code == REL_HWHEEL)) {
			/* Scroll events disable middle-click event */
			cptkbd_data->middlebutton_state = 2;
			return 0;
		}

		/* Middle click events */
		if (usage->type == EV_KEY && usage->code == BTN_MIDDLE) {
			if (value == 1) {
				cptkbd_data->middlebutton_state = 1;
			} else if (value == 0) {
				if (cptkbd_data->middlebutton_state == 1) {
					/* No scrolling inbetween, send middle-click */
					input_event(field->hidinput->input,
						EV_KEY, BTN_MIDDLE, 1);
					input_sync(field->hidinput->input);
					input_event(field->hidinput->input,
						EV_KEY, BTN_MIDDLE, 0);
					input_sync(field->hidinput->input);
				}
				cptkbd_data->middlebutton_state = 0;
			}
			return 1;
		}
	}

	if (usage->type == EV_KEY && usage->code == KEY_FN_ESC && value == 1) {
		/*
		 * The user has toggled the Fn-lock state. Toggle our own
		 * cached value of it and sync our value to the keyboard to
		 * ensure things are in sync (the syncing should be a no-op).
		 */
		cptkbd_data->fn_lock = !cptkbd_data->fn_lock;
	}

	return 0;
}

static int lenovo_event(struct hid_device *hdev, struct hid_field *field,
		struct hid_usage *usage, __s32 value)
{
	if (!hid_get_drvdata(hdev))
		return 0;

	switch (hdev->product) {
	case USB_DEVICE_ID_LENOVO_CUSBKBD:
	case USB_DEVICE_ID_LENOVO_CBTKBD:
	case USB_DEVICE_ID_LENOVO_TPIIUSBKBD:
	case USB_DEVICE_ID_LENOVO_TPIIBTKBD:
		return lenovo_event_cptkbd(hdev, field, usage, value);
	case USB_DEVICE_ID_LENOVO_TP10UBKBD:
	case USB_DEVICE_ID_LENOVO_X1_TAB:
		return lenovo_event_tp10ubkbd(hdev, field, usage, value);
	default:
		return 0;
	}
}

static int lenovo_features_set_tpkbd(struct hid_device *hdev)
{
	struct hid_report *report;
	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);

	report = hdev->report_enum[HID_FEATURE_REPORT].report_id_hash[4];

	report->field[0]->value[0]  = data_pointer->press_to_select   ? 0x01 : 0x02;
	report->field[0]->value[0] |= data_pointer->dragging          ? 0x04 : 0x08;
	report->field[0]->value[0] |= data_pointer->release_to_select ? 0x10 : 0x20;
	report->field[0]->value[0] |= data_pointer->select_right      ? 0x80 : 0x40;
	report->field[1]->value[0] = 0x03; // unknown setting, imitate windows driver
	report->field[2]->value[0] = data_pointer->sensitivity;
	report->field[3]->value[0] = data_pointer->press_speed;

	hid_hw_request(hdev, report, HID_REQ_SET_REPORT);
	return 0;
}

static ssize_t attr_press_to_select_show_tpkbd(struct device *dev,
		struct device_attribute *attr,
		char *buf)
{
	struct hid_device *hdev = to_hid_device(dev);
	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);

	return snprintf(buf, PAGE_SIZE, "%u\n", data_pointer->press_to_select);
}

static ssize_t attr_press_to_select_store_tpkbd(struct device *dev,
		struct device_attribute *attr,
		const char *buf,
		size_t count)
{
	struct hid_device *hdev = to_hid_device(dev);
	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);
	int value;

	if (kstrtoint(buf, 10, &value))
		return -EINVAL;
	if (value < 0 || value > 1)
		return -EINVAL;

	data_pointer->press_to_select = value;
	lenovo_features_set_tpkbd(hdev);

	return count;
}

static ssize_t attr_dragging_show_tpkbd(struct device *dev,
		struct device_attribute *attr,
		char *buf)
{
	struct hid_device *hdev = to_hid_device(dev);
	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);

	return snprintf(buf, PAGE_SIZE, "%u\n", data_pointer->dragging);
}

static ssize_t attr_dragging_store_tpkbd(struct device *dev,
		struct device_attribute *attr,
		const char *buf,
		size_t count)
{
	struct hid_device *hdev = to_hid_device(dev);
	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);
	int value;

	if (kstrtoint(buf, 10, &value))
		return -EINVAL;
	if (value < 0 || value > 1)
		return -EINVAL;

	data_pointer->dragging = value;
	lenovo_features_set_tpkbd(hdev);

	return count;
}

static ssize_t attr_release_to_select_show_tpkbd(struct device *dev,
		struct device_attribute *attr,
		char *buf)
{
	struct hid_device *hdev = to_hid_device(dev);
	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);

	return snprintf(buf, PAGE_SIZE, "%u\n", data_pointer->release_to_select);
}

static ssize_t attr_release_to_select_store_tpkbd(struct device *dev,
		struct device_attribute *attr,
		const char *buf,
		size_t count)
{
	struct hid_device *hdev = to_hid_device(dev);
	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);
	int value;

	if (kstrtoint(buf, 10, &value))
		return -EINVAL;
	if (value < 0 || value > 1)
		return -EINVAL;

	data_pointer->release_to_select = value;
	lenovo_features_set_tpkbd(hdev);

	return count;
}

static ssize_t attr_select_right_show_tpkbd(struct device *dev,
		struct device_attribute *attr,
		char *buf)
{
	struct hid_device *hdev = to_hid_device(dev);
	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);

	return snprintf(buf, PAGE_SIZE, "%u\n", data_pointer->select_right);
}

static ssize_t attr_select_right_store_tpkbd(struct device *dev,
		struct device_attribute *attr,
		const char *buf,
		size_t count)
{
	struct hid_device *hdev = to_hid_device(dev);
	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);
	int value;

	if (kstrtoint(buf, 10, &value))
		return -EINVAL;
	if (value < 0 || value > 1)
		return -EINVAL;

	data_pointer->select_right = value;
	lenovo_features_set_tpkbd(hdev);

	return count;
}

static ssize_t attr_sensitivity_show_tpkbd(struct device *dev,
		struct device_attribute *attr,
		char *buf)
{
	struct hid_device *hdev = to_hid_device(dev);
	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);

	return snprintf(buf, PAGE_SIZE, "%u\n",
		data_pointer->sensitivity);
}

static ssize_t attr_sensitivity_store_tpkbd(struct device *dev,
		struct device_attribute *attr,
		const char *buf,
		size_t count)
{
	struct hid_device *hdev = to_hid_device(dev);
	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);
	int value;

	if (kstrtoint(buf, 10, &value) || value < 1 || value > 255)
		return -EINVAL;

	data_pointer->sensitivity = value;
	lenovo_features_set_tpkbd(hdev);

	return count;
}

static ssize_t attr_press_speed_show_tpkbd(struct device *dev,
		struct device_attribute *attr,
		char *buf)
{
	struct hid_device *hdev = to_hid_device(dev);
	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);

	return snprintf(buf, PAGE_SIZE, "%u\n",
		data_pointer->press_speed);
}

static ssize_t attr_press_speed_store_tpkbd(struct device *dev,
		struct device_attribute *attr,
		const char *buf,
		size_t count)
{
	struct hid_device *hdev = to_hid_device(dev);
	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);
	int value;

	if (kstrtoint(buf, 10, &value) || value < 1 || value > 255)
		return -EINVAL;

	data_pointer->press_speed = value;
	lenovo_features_set_tpkbd(hdev);

	return count;
}

static struct device_attribute dev_attr_press_to_select_tpkbd =
	__ATTR(press_to_select, S_IWUSR | S_IRUGO,
			attr_press_to_select_show_tpkbd,
			attr_press_to_select_store_tpkbd);

static struct device_attribute dev_attr_dragging_tpkbd =
	__ATTR(dragging, S_IWUSR | S_IRUGO,
			attr_dragging_show_tpkbd,
			attr_dragging_store_tpkbd);

static struct device_attribute dev_attr_release_to_select_tpkbd =
	__ATTR(release_to_select, S_IWUSR | S_IRUGO,
			attr_release_to_select_show_tpkbd,
			attr_release_to_select_store_tpkbd);

static struct device_attribute dev_attr_select_right_tpkbd =
	__ATTR(select_right, S_IWUSR | S_IRUGO,
			attr_select_right_show_tpkbd,
			attr_select_right_store_tpkbd);

static struct device_attribute dev_attr_sensitivity_tpkbd =
	__ATTR(sensitivity, S_IWUSR | S_IRUGO,
			attr_sensitivity_show_tpkbd,
			attr_sensitivity_store_tpkbd);

static struct device_attribute dev_attr_press_speed_tpkbd =
	__ATTR(press_speed, S_IWUSR | S_IRUGO,
			attr_press_speed_show_tpkbd,
			attr_press_speed_store_tpkbd);

static struct attribute *lenovo_attributes_tpkbd[] = {
	&dev_attr_press_to_select_tpkbd.attr,
	&dev_attr_dragging_tpkbd.attr,
	&dev_attr_release_to_select_tpkbd.attr,
	&dev_attr_select_right_tpkbd.attr,
	&dev_attr_sensitivity_tpkbd.attr,
	&dev_attr_press_speed_tpkbd.attr,
	NULL
};

static const struct attribute_group lenovo_attr_group_tpkbd = {
	.attrs = lenovo_attributes_tpkbd,
};

static void lenovo_led_set_tpkbd(struct hid_device *hdev)
{
	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);
	struct hid_report *report;

	report = hdev->report_enum[HID_OUTPUT_REPORT].report_id_hash[3];
	report->field[0]->value[0] = (data_pointer->led_state >> 0) & 1;
	report->field[0]->value[1] = (data_pointer->led_state >> 1) & 1;
	hid_hw_request(hdev, report, HID_REQ_SET_REPORT);
}

static int lenovo_led_brightness_set(struct led_classdev *led_cdev,
			enum led_brightness value)
{
	struct device *dev = led_cdev->dev->parent;
	struct hid_device *hdev = to_hid_device(dev);
	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);
	static const u8 tp10ubkbd_led[] = { TP10UBKBD_MUTE_LED, TP10UBKBD_MICMUTE_LED };
	int led_nr = 0;
	int ret = 0;

	if (led_cdev == &data_pointer->led_micmute)
		led_nr = 1;

	if (value == LED_OFF)
		data_pointer->led_state &= ~(1 << led_nr);
	else
		data_pointer->led_state |= 1 << led_nr;

	switch (hdev->product) {
	case USB_DEVICE_ID_LENOVO_TPKBD:
		lenovo_led_set_tpkbd(hdev);
		break;
	case USB_DEVICE_ID_LENOVO_TP10UBKBD:
	case USB_DEVICE_ID_LENOVO_X1_TAB:
		ret = lenovo_led_set_tp10ubkbd(hdev, tp10ubkbd_led[led_nr], value);
		break;
	}

	return ret;
}

static int lenovo_register_leds(struct hid_device *hdev)
{
	struct lenovo_drvdata *data = hid_get_drvdata(hdev);
	size_t name_sz = strlen(dev_name(&hdev->dev)) + 16;
	char *name_mute, *name_micm;
	int ret;

	name_mute = devm_kzalloc(&hdev->dev, name_sz, GFP_KERNEL);
	name_micm = devm_kzalloc(&hdev->dev, name_sz, GFP_KERNEL);
	if (name_mute == NULL || name_micm == NULL) {
		hid_err(hdev, "Could not allocate memory for led data\n");
		return -ENOMEM;
	}
	snprintf(name_mute, name_sz, "%s:amber:mute", dev_name(&hdev->dev));
	snprintf(name_micm, name_sz, "%s:amber:micmute", dev_name(&hdev->dev));

	data->led_mute.name = name_mute;
	data->led_mute.default_trigger = "audio-mute";
	data->led_mute.brightness_set_blocking = lenovo_led_brightness_set;
	data->led_mute.max_brightness = 1;
	data->led_mute.flags = LED_HW_PLUGGABLE;
	data->led_mute.dev = &hdev->dev;
	ret = led_classdev_register(&hdev->dev, &data->led_mute);
	if (ret < 0)
		return ret;

	data->led_micmute.name = name_micm;
	data->led_micmute.default_trigger = "audio-micmute";
	data->led_micmute.brightness_set_blocking = lenovo_led_brightness_set;
	data->led_micmute.max_brightness = 1;
	data->led_micmute.flags = LED_HW_PLUGGABLE;
	data->led_micmute.dev = &hdev->dev;
	ret = led_classdev_register(&hdev->dev, &data->led_micmute);
	if (ret < 0) {
		led_classdev_unregister(&data->led_mute);
		return ret;
	}

	return 0;
}

static int lenovo_probe_tpkbd(struct hid_device *hdev)
{
	struct lenovo_drvdata *data_pointer;
	int i, ret;

	/*
	 * Only register extra settings against subdevice where input_mapping
	 * set drvdata to 1, i.e. the trackpoint.
	 */
	if (!hid_get_drvdata(hdev))
		return 0;

	hid_set_drvdata(hdev, NULL);

	/* Validate required reports. */
	for (i = 0; i < 4; i++) {
		if (!hid_validate_values(hdev, HID_FEATURE_REPORT, 4, i, 1))
			return -ENODEV;
	}
	if (!hid_validate_values(hdev, HID_OUTPUT_REPORT, 3, 0, 2))
		return -ENODEV;

	ret = sysfs_create_group(&hdev->dev.kobj, &lenovo_attr_group_tpkbd);
	if (ret)
		hid_warn(hdev, "Could not create sysfs group: %d\n", ret);

	data_pointer = devm_kzalloc(&hdev->dev,
				    sizeof(struct lenovo_drvdata),
				    GFP_KERNEL);
	if (data_pointer == NULL) {
		hid_err(hdev, "Could not allocate memory for driver data\n");
		ret = -ENOMEM;
		goto err;
	}

	// set same default values as windows driver
	data_pointer->sensitivity = 0xa0;
	data_pointer->press_speed = 0x38;

	hid_set_drvdata(hdev, data_pointer);

	ret = lenovo_register_leds(hdev);
	if (ret)
		goto err;

	lenovo_features_set_tpkbd(hdev);

	return 0;
err:
	sysfs_remove_group(&hdev->dev.kobj, &lenovo_attr_group_tpkbd);
	return ret;
}

static int lenovo_probe_cptkbd(struct hid_device *hdev)
{
	int ret;
	struct lenovo_drvdata *cptkbd_data;

	/* All the custom action happens on the USBMOUSE device for USB */
	if (((hdev->product == USB_DEVICE_ID_LENOVO_CUSBKBD) ||
	    (hdev->product == USB_DEVICE_ID_LENOVO_TPIIUSBKBD)) &&
	    hdev->type != HID_TYPE_USBMOUSE) {
		hid_dbg(hdev, "Ignoring keyboard half of device\n");
		return 0;
	}

	cptkbd_data = devm_kzalloc(&hdev->dev,
					sizeof(*cptkbd_data),
					GFP_KERNEL);
	if (cptkbd_data == NULL) {
		hid_err(hdev, "can't alloc keyboard descriptor\n");
		return -ENOMEM;
	}
	hid_set_drvdata(hdev, cptkbd_data);

	/* Set keyboard settings to known state */
	cptkbd_data->middlebutton_state = 0;
	cptkbd_data->fn_lock = true;
	cptkbd_data->sensitivity = 0x05;
	lenovo_features_set_cptkbd(hdev);

	ret = sysfs_create_group(&hdev->dev.kobj, &lenovo_attr_group_cptkbd);
	if (ret)
		hid_warn(hdev, "Could not create sysfs group: %d\n", ret);

	return 0;
}

static struct attribute *lenovo_attributes_tp10ubkbd[] = {
	&dev_attr_fn_lock.attr,
	NULL
};

static const struct attribute_group lenovo_attr_group_tp10ubkbd = {
	.attrs = lenovo_attributes_tp10ubkbd,
};

static int lenovo_probe_tp10ubkbd(struct hid_device *hdev)
{
	struct hid_report_enum *rep_enum;
	struct lenovo_drvdata *data;
	struct hid_report *rep;
	bool found;
	int ret;

	/*
	 * The LEDs and the Fn-lock functionality use output report 9,
	 * with an application of 0xffa0001, add the LEDs on the interface
	 * with this output report.
	 */
	found = false;
	rep_enum = &hdev->report_enum[HID_OUTPUT_REPORT];
	list_for_each_entry(rep, &rep_enum->report_list, list) {
		if (rep->application == 0xffa00001)
			found = true;
	}
	if (!found)
		return 0;

	data = devm_kzalloc(&hdev->dev, sizeof(*data), GFP_KERNEL);
	if (!data)
		return -ENOMEM;

	mutex_init(&data->led_report_mutex);
	INIT_WORK(&data->fn_lock_sync_work, lenovo_tp10ubkbd_sync_fn_lock);
	data->hdev = hdev;

	hid_set_drvdata(hdev, data);

	/*
	 * The Thinkpad 10 ultrabook USB kbd dock's Fn-lock defaults to on.
	 * We cannot read the state, only set it, so we force it to on here
	 * (which should be a no-op) to make sure that our state matches the
	 * keyboard's FN-lock state. This is the same as what Windows does.
	 */
	data->fn_lock = true;
	lenovo_led_set_tp10ubkbd(hdev, TP10UBKBD_FN_LOCK_LED, data->fn_lock);

	ret = sysfs_create_group(&hdev->dev.kobj, &lenovo_attr_group_tp10ubkbd);
	if (ret)
		return ret;

	ret = lenovo_register_leds(hdev);
	if (ret)
		goto err;

	return 0;
err:
	sysfs_remove_group(&hdev->dev.kobj, &lenovo_attr_group_tp10ubkbd);
	return ret;
}

static int lenovo_probe(struct hid_device *hdev,
		const struct hid_device_id *id)
{
	int ret;

	ret = hid_parse(hdev);
	if (ret) {
		hid_err(hdev, "hid_parse failed\n");
		goto err;
	}

	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
	if (ret) {
		hid_err(hdev, "hid_hw_start failed\n");
		goto err;
	}

	switch (hdev->product) {
	case USB_DEVICE_ID_LENOVO_TPKBD:
		ret = lenovo_probe_tpkbd(hdev);
		break;
	case USB_DEVICE_ID_LENOVO_CUSBKBD:
	case USB_DEVICE_ID_LENOVO_CBTKBD:
	case USB_DEVICE_ID_LENOVO_TPIIUSBKBD:
	case USB_DEVICE_ID_LENOVO_TPIIBTKBD:
		ret = lenovo_probe_cptkbd(hdev);
		break;
	case USB_DEVICE_ID_LENOVO_TP10UBKBD:
	case USB_DEVICE_ID_LENOVO_X1_TAB:
		ret = lenovo_probe_tp10ubkbd(hdev);
		break;
	default:
		ret = 0;
		break;
	}
	if (ret)
		goto err_hid;

	return 0;
err_hid:
	hid_hw_stop(hdev);
err:
	return ret;
}

#ifdef CONFIG_PM
static int lenovo_reset_resume(struct hid_device *hdev)
{
	switch (hdev->product) {
	case USB_DEVICE_ID_LENOVO_CUSBKBD:
	case USB_DEVICE_ID_LENOVO_TPIIUSBKBD:
		if (hdev->type == HID_TYPE_USBMOUSE)
			lenovo_features_set_cptkbd(hdev);

		break;
	default:
		break;
	}

	return 0;
}
#endif

static void lenovo_remove_tpkbd(struct hid_device *hdev)
{
	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);

	/*
	 * Only the trackpoint half of the keyboard has drvdata and stuff that
	 * needs unregistering.
	 */
	if (data_pointer == NULL)
		return;

	sysfs_remove_group(&hdev->dev.kobj,
			&lenovo_attr_group_tpkbd);

	led_classdev_unregister(&data_pointer->led_micmute);
	led_classdev_unregister(&data_pointer->led_mute);
}

static void lenovo_remove_cptkbd(struct hid_device *hdev)
{
	sysfs_remove_group(&hdev->dev.kobj,
			&lenovo_attr_group_cptkbd);
}

static void lenovo_remove_tp10ubkbd(struct hid_device *hdev)
{
	struct lenovo_drvdata *data = hid_get_drvdata(hdev);

	if (data == NULL)
		return;

	led_classdev_unregister(&data->led_micmute);
	led_classdev_unregister(&data->led_mute);

	sysfs_remove_group(&hdev->dev.kobj, &lenovo_attr_group_tp10ubkbd);
	cancel_work_sync(&data->fn_lock_sync_work);
}

static void lenovo_remove(struct hid_device *hdev)
{
	switch (hdev->product) {
	case USB_DEVICE_ID_LENOVO_TPKBD:
		lenovo_remove_tpkbd(hdev);
		break;
	case USB_DEVICE_ID_LENOVO_CUSBKBD:
	case USB_DEVICE_ID_LENOVO_CBTKBD:
	case USB_DEVICE_ID_LENOVO_TPIIUSBKBD:
	case USB_DEVICE_ID_LENOVO_TPIIBTKBD:
		lenovo_remove_cptkbd(hdev);
		break;
	case USB_DEVICE_ID_LENOVO_TP10UBKBD:
	case USB_DEVICE_ID_LENOVO_X1_TAB:
		lenovo_remove_tp10ubkbd(hdev);
		break;
	}

	hid_hw_stop(hdev);
}

static int lenovo_input_configured(struct hid_device *hdev,
		struct hid_input *hi)
{
	switch (hdev->product) {
		case USB_DEVICE_ID_LENOVO_TPKBD:
		case USB_DEVICE_ID_LENOVO_CUSBKBD:
		case USB_DEVICE_ID_LENOVO_CBTKBD:
		case USB_DEVICE_ID_LENOVO_TPIIUSBKBD:
		case USB_DEVICE_ID_LENOVO_TPIIBTKBD:
			if (test_bit(EV_REL, hi->input->evbit)) {
				/* set only for trackpoint device */
				__set_bit(INPUT_PROP_POINTER, hi->input->propbit);
				__set_bit(INPUT_PROP_POINTING_STICK,
						hi->input->propbit);
			}
			break;
	}

	return 0;
}


static const struct hid_device_id lenovo_devices[] = {
	{ HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPKBD) },
	{ HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_CUSBKBD) },
	{ HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPIIUSBKBD) },
	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_CBTKBD) },
	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPIIBTKBD) },
	{ HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPPRODOCK) },
	{ HID_USB_DEVICE(USB_VENDOR_ID_IBM, USB_DEVICE_ID_IBM_SCROLLPOINT_III) },
	{ HID_USB_DEVICE(USB_VENDOR_ID_IBM, USB_DEVICE_ID_IBM_SCROLLPOINT_PRO) },
	{ HID_USB_DEVICE(USB_VENDOR_ID_IBM, USB_DEVICE_ID_IBM_SCROLLPOINT_OPTICAL) },
	{ HID_USB_DEVICE(USB_VENDOR_ID_IBM, USB_DEVICE_ID_IBM_SCROLLPOINT_800DPI_OPTICAL) },
	{ HID_USB_DEVICE(USB_VENDOR_ID_IBM, USB_DEVICE_ID_IBM_SCROLLPOINT_800DPI_OPTICAL_PRO) },
	{ HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_SCROLLPOINT_OPTICAL) },
	{ HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TP10UBKBD) },
	/*
	 * Note bind to the HID_GROUP_GENERIC group, so that we only bind to the keyboard
	 * part, while letting hid-multitouch.c handle the touchpad and trackpoint.
	 */
	{ HID_DEVICE(BUS_USB, HID_GROUP_GENERIC,
		     USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_X1_TAB) },
	{ }
};

MODULE_DEVICE_TABLE(hid, lenovo_devices);

static struct hid_driver lenovo_driver = {
	.name = "lenovo",
	.id_table = lenovo_devices,
	.input_configured = lenovo_input_configured,
	.input_mapping = lenovo_input_mapping,
	.probe = lenovo_probe,
	.remove = lenovo_remove,
	.raw_event = lenovo_raw_event,
	.event = lenovo_event,
	.report_fixup = lenovo_report_fixup,
#ifdef CONFIG_PM
	.reset_resume = lenovo_reset_resume,
#endif
};
module_hid_driver(lenovo_driver);

MODULE_LICENSE("GPL");