-
Notifications
You must be signed in to change notification settings - Fork 102
/
hid-logitech-dj.c
1935 lines (1694 loc) · 62.7 KB
/
hid-logitech-dj.c
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
// SPDX-License-Identifier: GPL-2.0-only
/*
* HID driver for Logitech Unifying receivers
*
* Copyright (c) 2011 Logitech
*/
#include <linux/device.h>
#include <linux/hid.h>
#include <linux/module.h>
#include <linux/kfifo.h>
#include <linux/delay.h>
#include <linux/usb.h> /* For to_usb_interface for kvm extra intf check */
#include <asm/unaligned.h>
#include "hid-ids.h"
#define DJ_MAX_PAIRED_DEVICES 6
#define DJ_MAX_NUMBER_NOTIFS 8
#define DJ_RECEIVER_INDEX 0
#define DJ_DEVICE_INDEX_MIN 1
#define DJ_DEVICE_INDEX_MAX 6
#define DJREPORT_SHORT_LENGTH 15
#define DJREPORT_LONG_LENGTH 32
#define REPORT_ID_DJ_SHORT 0x20
#define REPORT_ID_DJ_LONG 0x21
#define REPORT_ID_HIDPP_SHORT 0x10
#define REPORT_ID_HIDPP_LONG 0x11
#define REPORT_ID_HIDPP_VERY_LONG 0x12
#define HIDPP_REPORT_SHORT_LENGTH 7
#define HIDPP_REPORT_LONG_LENGTH 20
#define HIDPP_RECEIVER_INDEX 0xff
#define REPORT_TYPE_RFREPORT_FIRST 0x01
#define REPORT_TYPE_RFREPORT_LAST 0x1F
/* Command Switch to DJ mode */
#define REPORT_TYPE_CMD_SWITCH 0x80
#define CMD_SWITCH_PARAM_DEVBITFIELD 0x00
#define CMD_SWITCH_PARAM_TIMEOUT_SECONDS 0x01
#define TIMEOUT_NO_KEEPALIVE 0x00
/* Command to Get the list of Paired devices */
#define REPORT_TYPE_CMD_GET_PAIRED_DEVICES 0x81
/* Device Paired Notification */
#define REPORT_TYPE_NOTIF_DEVICE_PAIRED 0x41
#define SPFUNCTION_MORE_NOTIF_EXPECTED 0x01
#define SPFUNCTION_DEVICE_LIST_EMPTY 0x02
#define DEVICE_PAIRED_PARAM_SPFUNCTION 0x00
#define DEVICE_PAIRED_PARAM_EQUAD_ID_LSB 0x01
#define DEVICE_PAIRED_PARAM_EQUAD_ID_MSB 0x02
#define DEVICE_PAIRED_RF_REPORT_TYPE 0x03
/* Device Un-Paired Notification */
#define REPORT_TYPE_NOTIF_DEVICE_UNPAIRED 0x40
/* Connection Status Notification */
#define REPORT_TYPE_NOTIF_CONNECTION_STATUS 0x42
#define CONNECTION_STATUS_PARAM_STATUS 0x00
#define STATUS_LINKLOSS 0x01
/* Error Notification */
#define REPORT_TYPE_NOTIF_ERROR 0x7F
#define NOTIF_ERROR_PARAM_ETYPE 0x00
#define ETYPE_KEEPALIVE_TIMEOUT 0x01
/* supported DJ HID && RF report types */
#define REPORT_TYPE_KEYBOARD 0x01
#define REPORT_TYPE_MOUSE 0x02
#define REPORT_TYPE_CONSUMER_CONTROL 0x03
#define REPORT_TYPE_SYSTEM_CONTROL 0x04
#define REPORT_TYPE_MEDIA_CENTER 0x08
#define REPORT_TYPE_LEDS 0x0E
/* RF Report types bitfield */
#define STD_KEYBOARD BIT(1)
#define STD_MOUSE BIT(2)
#define MULTIMEDIA BIT(3)
#define POWER_KEYS BIT(4)
#define MEDIA_CENTER BIT(8)
#define KBD_LEDS BIT(14)
/* Fake (bitnr > NUMBER_OF_HID_REPORTS) bit to track HID++ capability */
#define HIDPP BIT_ULL(63)
/* HID++ Device Connected Notification */
#define REPORT_TYPE_NOTIF_DEVICE_CONNECTED 0x41
#define HIDPP_PARAM_PROTO_TYPE 0x00
#define HIDPP_PARAM_DEVICE_INFO 0x01
#define HIDPP_PARAM_EQUAD_LSB 0x02
#define HIDPP_PARAM_EQUAD_MSB 0x03
#define HIDPP_PARAM_27MHZ_DEVID 0x03
#define HIDPP_DEVICE_TYPE_MASK GENMASK(3, 0)
#define HIDPP_LINK_STATUS_MASK BIT(6)
#define HIDPP_MANUFACTURER_MASK BIT(7)
#define HIDPP_DEVICE_TYPE_KEYBOARD 1
#define HIDPP_DEVICE_TYPE_MOUSE 2
#define HIDPP_SET_REGISTER 0x80
#define HIDPP_GET_LONG_REGISTER 0x83
#define HIDPP_REG_CONNECTION_STATE 0x02
#define HIDPP_REG_PAIRING_INFORMATION 0xB5
#define HIDPP_PAIRING_INFORMATION 0x20
#define HIDPP_FAKE_DEVICE_ARRIVAL 0x02
enum recvr_type {
recvr_type_dj,
recvr_type_hidpp,
recvr_type_gaming_hidpp,
recvr_type_mouse_only,
recvr_type_27mhz,
recvr_type_bluetooth,
};
struct dj_report {
u8 report_id;
u8 device_index;
u8 report_type;
u8 report_params[DJREPORT_SHORT_LENGTH - 3];
};
struct hidpp_event {
u8 report_id;
u8 device_index;
u8 sub_id;
u8 params[HIDPP_REPORT_LONG_LENGTH - 3U];
} __packed;
struct dj_receiver_dev {
struct hid_device *mouse;
struct hid_device *keyboard;
struct hid_device *hidpp;
struct dj_device *paired_dj_devices[DJ_MAX_PAIRED_DEVICES +
DJ_DEVICE_INDEX_MIN];
struct list_head list;
struct kref kref;
struct work_struct work;
struct kfifo notif_fifo;
unsigned long last_query; /* in jiffies */
bool ready;
enum recvr_type type;
unsigned int unnumbered_application;
spinlock_t lock;
};
struct dj_device {
struct hid_device *hdev;
struct dj_receiver_dev *dj_receiver_dev;
u64 reports_supported;
u8 device_index;
};
#define WORKITEM_TYPE_EMPTY 0
#define WORKITEM_TYPE_PAIRED 1
#define WORKITEM_TYPE_UNPAIRED 2
#define WORKITEM_TYPE_UNKNOWN 255
struct dj_workitem {
u8 type; /* WORKITEM_TYPE_* */
u8 device_index;
u8 device_type;
u8 quad_id_msb;
u8 quad_id_lsb;
u64 reports_supported;
};
/* Keyboard descriptor (1) */
static const char kbd_descriptor[] = {
0x05, 0x01, /* USAGE_PAGE (generic Desktop) */
0x09, 0x06, /* USAGE (Keyboard) */
0xA1, 0x01, /* COLLECTION (Application) */
0x85, 0x01, /* REPORT_ID (1) */
0x95, 0x08, /* REPORT_COUNT (8) */
0x75, 0x01, /* REPORT_SIZE (1) */
0x15, 0x00, /* LOGICAL_MINIMUM (0) */
0x25, 0x01, /* LOGICAL_MAXIMUM (1) */
0x05, 0x07, /* USAGE_PAGE (Keyboard) */
0x19, 0xE0, /* USAGE_MINIMUM (Left Control) */
0x29, 0xE7, /* USAGE_MAXIMUM (Right GUI) */
0x81, 0x02, /* INPUT (Data,Var,Abs) */
0x95, 0x06, /* REPORT_COUNT (6) */
0x75, 0x08, /* REPORT_SIZE (8) */
0x15, 0x00, /* LOGICAL_MINIMUM (0) */
0x26, 0xFF, 0x00, /* LOGICAL_MAXIMUM (255) */
0x05, 0x07, /* USAGE_PAGE (Keyboard) */
0x19, 0x00, /* USAGE_MINIMUM (no event) */
0x2A, 0xFF, 0x00, /* USAGE_MAXIMUM (reserved) */
0x81, 0x00, /* INPUT (Data,Ary,Abs) */
0x85, 0x0e, /* REPORT_ID (14) */
0x05, 0x08, /* USAGE PAGE (LED page) */
0x95, 0x05, /* REPORT COUNT (5) */
0x75, 0x01, /* REPORT SIZE (1) */
0x15, 0x00, /* LOGICAL_MINIMUM (0) */
0x25, 0x01, /* LOGICAL_MAXIMUM (1) */
0x19, 0x01, /* USAGE MINIMUM (1) */
0x29, 0x05, /* USAGE MAXIMUM (5) */
0x91, 0x02, /* OUTPUT (Data, Variable, Absolute) */
0x95, 0x01, /* REPORT COUNT (1) */
0x75, 0x03, /* REPORT SIZE (3) */
0x91, 0x01, /* OUTPUT (Constant) */
0xC0
};
/* Mouse descriptor (2) */
static const char mse_descriptor[] = {
0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */
0x09, 0x02, /* USAGE (Mouse) */
0xA1, 0x01, /* COLLECTION (Application) */
0x85, 0x02, /* REPORT_ID = 2 */
0x09, 0x01, /* USAGE (pointer) */
0xA1, 0x00, /* COLLECTION (physical) */
0x05, 0x09, /* USAGE_PAGE (buttons) */
0x19, 0x01, /* USAGE_MIN (1) */
0x29, 0x10, /* USAGE_MAX (16) */
0x15, 0x00, /* LOGICAL_MIN (0) */
0x25, 0x01, /* LOGICAL_MAX (1) */
0x95, 0x10, /* REPORT_COUNT (16) */
0x75, 0x01, /* REPORT_SIZE (1) */
0x81, 0x02, /* INPUT (data var abs) */
0x05, 0x01, /* USAGE_PAGE (generic desktop) */
0x16, 0x01, 0xF8, /* LOGICAL_MIN (-2047) */
0x26, 0xFF, 0x07, /* LOGICAL_MAX (2047) */
0x75, 0x0C, /* REPORT_SIZE (12) */
0x95, 0x02, /* REPORT_COUNT (2) */
0x09, 0x30, /* USAGE (X) */
0x09, 0x31, /* USAGE (Y) */
0x81, 0x06, /* INPUT */
0x15, 0x81, /* LOGICAL_MIN (-127) */
0x25, 0x7F, /* LOGICAL_MAX (127) */
0x75, 0x08, /* REPORT_SIZE (8) */
0x95, 0x01, /* REPORT_COUNT (1) */
0x09, 0x38, /* USAGE (wheel) */
0x81, 0x06, /* INPUT */
0x05, 0x0C, /* USAGE_PAGE(consumer) */
0x0A, 0x38, 0x02, /* USAGE(AC Pan) */
0x95, 0x01, /* REPORT_COUNT (1) */
0x81, 0x06, /* INPUT */
0xC0, /* END_COLLECTION */
0xC0, /* END_COLLECTION */
};
/* Mouse descriptor (2) for 27 MHz receiver, only 8 buttons */
static const char mse_27mhz_descriptor[] = {
0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */
0x09, 0x02, /* USAGE (Mouse) */
0xA1, 0x01, /* COLLECTION (Application) */
0x85, 0x02, /* REPORT_ID = 2 */
0x09, 0x01, /* USAGE (pointer) */
0xA1, 0x00, /* COLLECTION (physical) */
0x05, 0x09, /* USAGE_PAGE (buttons) */
0x19, 0x01, /* USAGE_MIN (1) */
0x29, 0x08, /* USAGE_MAX (8) */
0x15, 0x00, /* LOGICAL_MIN (0) */
0x25, 0x01, /* LOGICAL_MAX (1) */
0x95, 0x08, /* REPORT_COUNT (8) */
0x75, 0x01, /* REPORT_SIZE (1) */
0x81, 0x02, /* INPUT (data var abs) */
0x05, 0x01, /* USAGE_PAGE (generic desktop) */
0x16, 0x01, 0xF8, /* LOGICAL_MIN (-2047) */
0x26, 0xFF, 0x07, /* LOGICAL_MAX (2047) */
0x75, 0x0C, /* REPORT_SIZE (12) */
0x95, 0x02, /* REPORT_COUNT (2) */
0x09, 0x30, /* USAGE (X) */
0x09, 0x31, /* USAGE (Y) */
0x81, 0x06, /* INPUT */
0x15, 0x81, /* LOGICAL_MIN (-127) */
0x25, 0x7F, /* LOGICAL_MAX (127) */
0x75, 0x08, /* REPORT_SIZE (8) */
0x95, 0x01, /* REPORT_COUNT (1) */
0x09, 0x38, /* USAGE (wheel) */
0x81, 0x06, /* INPUT */
0x05, 0x0C, /* USAGE_PAGE(consumer) */
0x0A, 0x38, 0x02, /* USAGE(AC Pan) */
0x95, 0x01, /* REPORT_COUNT (1) */
0x81, 0x06, /* INPUT */
0xC0, /* END_COLLECTION */
0xC0, /* END_COLLECTION */
};
/* Mouse descriptor (2) for Bluetooth receiver, low-res hwheel, 12 buttons */
static const char mse_bluetooth_descriptor[] = {
0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */
0x09, 0x02, /* USAGE (Mouse) */
0xA1, 0x01, /* COLLECTION (Application) */
0x85, 0x02, /* REPORT_ID = 2 */
0x09, 0x01, /* USAGE (pointer) */
0xA1, 0x00, /* COLLECTION (physical) */
0x05, 0x09, /* USAGE_PAGE (buttons) */
0x19, 0x01, /* USAGE_MIN (1) */
0x29, 0x08, /* USAGE_MAX (8) */
0x15, 0x00, /* LOGICAL_MIN (0) */
0x25, 0x01, /* LOGICAL_MAX (1) */
0x95, 0x08, /* REPORT_COUNT (8) */
0x75, 0x01, /* REPORT_SIZE (1) */
0x81, 0x02, /* INPUT (data var abs) */
0x05, 0x01, /* USAGE_PAGE (generic desktop) */
0x16, 0x01, 0xF8, /* LOGICAL_MIN (-2047) */
0x26, 0xFF, 0x07, /* LOGICAL_MAX (2047) */
0x75, 0x0C, /* REPORT_SIZE (12) */
0x95, 0x02, /* REPORT_COUNT (2) */
0x09, 0x30, /* USAGE (X) */
0x09, 0x31, /* USAGE (Y) */
0x81, 0x06, /* INPUT */
0x15, 0x81, /* LOGICAL_MIN (-127) */
0x25, 0x7F, /* LOGICAL_MAX (127) */
0x75, 0x08, /* REPORT_SIZE (8) */
0x95, 0x01, /* REPORT_COUNT (1) */
0x09, 0x38, /* USAGE (wheel) */
0x81, 0x06, /* INPUT */
0x05, 0x0C, /* USAGE_PAGE(consumer) */
0x0A, 0x38, 0x02, /* USAGE(AC Pan) */
0x15, 0xF9, /* LOGICAL_MIN (-7) */
0x25, 0x07, /* LOGICAL_MAX (7) */
0x75, 0x04, /* REPORT_SIZE (4) */
0x95, 0x01, /* REPORT_COUNT (1) */
0x81, 0x06, /* INPUT */
0x05, 0x09, /* USAGE_PAGE (buttons) */
0x19, 0x09, /* USAGE_MIN (9) */
0x29, 0x0C, /* USAGE_MAX (12) */
0x15, 0x00, /* LOGICAL_MIN (0) */
0x25, 0x01, /* LOGICAL_MAX (1) */
0x75, 0x01, /* REPORT_SIZE (1) */
0x95, 0x04, /* REPORT_COUNT (4) */
0x81, 0x02, /* INPUT (Data,Var,Abs) */
0xC0, /* END_COLLECTION */
0xC0, /* END_COLLECTION */
};
/* Gaming Mouse descriptor (2) */
static const char mse_high_res_descriptor[] = {
0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */
0x09, 0x02, /* USAGE (Mouse) */
0xA1, 0x01, /* COLLECTION (Application) */
0x85, 0x02, /* REPORT_ID = 2 */
0x09, 0x01, /* USAGE (pointer) */
0xA1, 0x00, /* COLLECTION (physical) */
0x05, 0x09, /* USAGE_PAGE (buttons) */
0x19, 0x01, /* USAGE_MIN (1) */
0x29, 0x10, /* USAGE_MAX (16) */
0x15, 0x00, /* LOGICAL_MIN (0) */
0x25, 0x01, /* LOGICAL_MAX (1) */
0x95, 0x10, /* REPORT_COUNT (16) */
0x75, 0x01, /* REPORT_SIZE (1) */
0x81, 0x02, /* INPUT (data var abs) */
0x05, 0x01, /* USAGE_PAGE (generic desktop) */
0x16, 0x01, 0x80, /* LOGICAL_MIN (-32767) */
0x26, 0xFF, 0x7F, /* LOGICAL_MAX (32767) */
0x75, 0x10, /* REPORT_SIZE (16) */
0x95, 0x02, /* REPORT_COUNT (2) */
0x09, 0x30, /* USAGE (X) */
0x09, 0x31, /* USAGE (Y) */
0x81, 0x06, /* INPUT */
0x15, 0x81, /* LOGICAL_MIN (-127) */
0x25, 0x7F, /* LOGICAL_MAX (127) */
0x75, 0x08, /* REPORT_SIZE (8) */
0x95, 0x01, /* REPORT_COUNT (1) */
0x09, 0x38, /* USAGE (wheel) */
0x81, 0x06, /* INPUT */
0x05, 0x0C, /* USAGE_PAGE(consumer) */
0x0A, 0x38, 0x02, /* USAGE(AC Pan) */
0x95, 0x01, /* REPORT_COUNT (1) */
0x81, 0x06, /* INPUT */
0xC0, /* END_COLLECTION */
0xC0, /* END_COLLECTION */
};
/* Consumer Control descriptor (3) */
static const char consumer_descriptor[] = {
0x05, 0x0C, /* USAGE_PAGE (Consumer Devices) */
0x09, 0x01, /* USAGE (Consumer Control) */
0xA1, 0x01, /* COLLECTION (Application) */
0x85, 0x03, /* REPORT_ID = 3 */
0x75, 0x10, /* REPORT_SIZE (16) */
0x95, 0x02, /* REPORT_COUNT (2) */
0x15, 0x01, /* LOGICAL_MIN (1) */
0x26, 0xFF, 0x02, /* LOGICAL_MAX (767) */
0x19, 0x01, /* USAGE_MIN (1) */
0x2A, 0xFF, 0x02, /* USAGE_MAX (767) */
0x81, 0x00, /* INPUT (Data Ary Abs) */
0xC0, /* END_COLLECTION */
}; /* */
/* System control descriptor (4) */
static const char syscontrol_descriptor[] = {
0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */
0x09, 0x80, /* USAGE (System Control) */
0xA1, 0x01, /* COLLECTION (Application) */
0x85, 0x04, /* REPORT_ID = 4 */
0x75, 0x02, /* REPORT_SIZE (2) */
0x95, 0x01, /* REPORT_COUNT (1) */
0x15, 0x01, /* LOGICAL_MIN (1) */
0x25, 0x03, /* LOGICAL_MAX (3) */
0x09, 0x82, /* USAGE (System Sleep) */
0x09, 0x81, /* USAGE (System Power Down) */
0x09, 0x83, /* USAGE (System Wake Up) */
0x81, 0x60, /* INPUT (Data Ary Abs NPrf Null) */
0x75, 0x06, /* REPORT_SIZE (6) */
0x81, 0x03, /* INPUT (Cnst Var Abs) */
0xC0, /* END_COLLECTION */
};
/* Media descriptor (8) */
static const char media_descriptor[] = {
0x06, 0xbc, 0xff, /* Usage Page 0xffbc */
0x09, 0x88, /* Usage 0x0088 */
0xa1, 0x01, /* BeginCollection */
0x85, 0x08, /* Report ID 8 */
0x19, 0x01, /* Usage Min 0x0001 */
0x29, 0xff, /* Usage Max 0x00ff */
0x15, 0x01, /* Logical Min 1 */
0x26, 0xff, 0x00, /* Logical Max 255 */
0x75, 0x08, /* Report Size 8 */
0x95, 0x01, /* Report Count 1 */
0x81, 0x00, /* Input */
0xc0, /* EndCollection */
}; /* */
/* HIDPP descriptor */
static const char hidpp_descriptor[] = {
0x06, 0x00, 0xff, /* Usage Page (Vendor Defined Page 1) */
0x09, 0x01, /* Usage (Vendor Usage 1) */
0xa1, 0x01, /* Collection (Application) */
0x85, 0x10, /* Report ID (16) */
0x75, 0x08, /* Report Size (8) */
0x95, 0x06, /* Report Count (6) */
0x15, 0x00, /* Logical Minimum (0) */
0x26, 0xff, 0x00, /* Logical Maximum (255) */
0x09, 0x01, /* Usage (Vendor Usage 1) */
0x81, 0x00, /* Input (Data,Arr,Abs) */
0x09, 0x01, /* Usage (Vendor Usage 1) */
0x91, 0x00, /* Output (Data,Arr,Abs) */
0xc0, /* End Collection */
0x06, 0x00, 0xff, /* Usage Page (Vendor Defined Page 1) */
0x09, 0x02, /* Usage (Vendor Usage 2) */
0xa1, 0x01, /* Collection (Application) */
0x85, 0x11, /* Report ID (17) */
0x75, 0x08, /* Report Size (8) */
0x95, 0x13, /* Report Count (19) */
0x15, 0x00, /* Logical Minimum (0) */
0x26, 0xff, 0x00, /* Logical Maximum (255) */
0x09, 0x02, /* Usage (Vendor Usage 2) */
0x81, 0x00, /* Input (Data,Arr,Abs) */
0x09, 0x02, /* Usage (Vendor Usage 2) */
0x91, 0x00, /* Output (Data,Arr,Abs) */
0xc0, /* End Collection */
0x06, 0x00, 0xff, /* Usage Page (Vendor Defined Page 1) */
0x09, 0x04, /* Usage (Vendor Usage 0x04) */
0xa1, 0x01, /* Collection (Application) */
0x85, 0x20, /* Report ID (32) */
0x75, 0x08, /* Report Size (8) */
0x95, 0x0e, /* Report Count (14) */
0x15, 0x00, /* Logical Minimum (0) */
0x26, 0xff, 0x00, /* Logical Maximum (255) */
0x09, 0x41, /* Usage (Vendor Usage 0x41) */
0x81, 0x00, /* Input (Data,Arr,Abs) */
0x09, 0x41, /* Usage (Vendor Usage 0x41) */
0x91, 0x00, /* Output (Data,Arr,Abs) */
0x85, 0x21, /* Report ID (33) */
0x95, 0x1f, /* Report Count (31) */
0x15, 0x00, /* Logical Minimum (0) */
0x26, 0xff, 0x00, /* Logical Maximum (255) */
0x09, 0x42, /* Usage (Vendor Usage 0x42) */
0x81, 0x00, /* Input (Data,Arr,Abs) */
0x09, 0x42, /* Usage (Vendor Usage 0x42) */
0x91, 0x00, /* Output (Data,Arr,Abs) */
0xc0, /* End Collection */
};
/* Maximum size of all defined hid reports in bytes (including report id) */
#define MAX_REPORT_SIZE 8
/* Make sure all descriptors are present here */
#define MAX_RDESC_SIZE \
(sizeof(kbd_descriptor) + \
sizeof(mse_bluetooth_descriptor) + \
sizeof(consumer_descriptor) + \
sizeof(syscontrol_descriptor) + \
sizeof(media_descriptor) + \
sizeof(hidpp_descriptor))
/* Number of possible hid report types that can be created by this driver.
*
* Right now, RF report types have the same report types (or report id's)
* than the hid report created from those RF reports. In the future
* this doesnt have to be true.
*
* For instance, RF report type 0x01 which has a size of 8 bytes, corresponds
* to hid report id 0x01, this is standard keyboard. Same thing applies to mice
* reports and consumer control, etc. If a new RF report is created, it doesn't
* has to have the same report id as its corresponding hid report, so an
* translation may have to take place for future report types.
*/
#define NUMBER_OF_HID_REPORTS 32
static const u8 hid_reportid_size_map[NUMBER_OF_HID_REPORTS] = {
[1] = 8, /* Standard keyboard */
[2] = 8, /* Standard mouse */
[3] = 5, /* Consumer control */
[4] = 2, /* System control */
[8] = 2, /* Media Center */
};
#define LOGITECH_DJ_INTERFACE_NUMBER 0x02
static struct hid_ll_driver logi_dj_ll_driver;
static int logi_dj_recv_query_paired_devices(struct dj_receiver_dev *djrcv_dev);
static void delayedwork_callback(struct work_struct *work);
static LIST_HEAD(dj_hdev_list);
static DEFINE_MUTEX(dj_hdev_list_lock);
/*
* dj/HID++ receivers are really a single logical entity, but for BIOS/Windows
* compatibility they have multiple USB interfaces. On HID++ receivers we need
* to listen for input reports on both interfaces. The functions below are used
* to create a single struct dj_receiver_dev for all interfaces belonging to
* a single USB-device / receiver.
*/
static struct dj_receiver_dev *dj_find_receiver_dev(struct hid_device *hdev,
enum recvr_type type)
{
struct dj_receiver_dev *djrcv_dev;
char sep;
/*
* The bluetooth receiver contains a built-in hub and has separate
* USB-devices for the keyboard and mouse interfaces.
*/
sep = (type == recvr_type_bluetooth) ? '.' : '/';
/* Try to find an already-probed interface from the same device */
list_for_each_entry(djrcv_dev, &dj_hdev_list, list) {
if (djrcv_dev->mouse &&
hid_compare_device_paths(hdev, djrcv_dev->mouse, sep)) {
kref_get(&djrcv_dev->kref);
return djrcv_dev;
}
if (djrcv_dev->keyboard &&
hid_compare_device_paths(hdev, djrcv_dev->keyboard, sep)) {
kref_get(&djrcv_dev->kref);
return djrcv_dev;
}
if (djrcv_dev->hidpp &&
hid_compare_device_paths(hdev, djrcv_dev->hidpp, sep)) {
kref_get(&djrcv_dev->kref);
return djrcv_dev;
}
}
return NULL;
}
static void dj_release_receiver_dev(struct kref *kref)
{
struct dj_receiver_dev *djrcv_dev = container_of(kref, struct dj_receiver_dev, kref);
list_del(&djrcv_dev->list);
kfifo_free(&djrcv_dev->notif_fifo);
kfree(djrcv_dev);
}
static void dj_put_receiver_dev(struct hid_device *hdev)
{
struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
mutex_lock(&dj_hdev_list_lock);
if (djrcv_dev->mouse == hdev)
djrcv_dev->mouse = NULL;
if (djrcv_dev->keyboard == hdev)
djrcv_dev->keyboard = NULL;
if (djrcv_dev->hidpp == hdev)
djrcv_dev->hidpp = NULL;
kref_put(&djrcv_dev->kref, dj_release_receiver_dev);
mutex_unlock(&dj_hdev_list_lock);
}
static struct dj_receiver_dev *dj_get_receiver_dev(struct hid_device *hdev,
enum recvr_type type,
unsigned int application,
bool is_hidpp)
{
struct dj_receiver_dev *djrcv_dev;
mutex_lock(&dj_hdev_list_lock);
djrcv_dev = dj_find_receiver_dev(hdev, type);
if (!djrcv_dev) {
djrcv_dev = kzalloc(sizeof(*djrcv_dev), GFP_KERNEL);
if (!djrcv_dev)
goto out;
INIT_WORK(&djrcv_dev->work, delayedwork_callback);
spin_lock_init(&djrcv_dev->lock);
if (kfifo_alloc(&djrcv_dev->notif_fifo,
DJ_MAX_NUMBER_NOTIFS * sizeof(struct dj_workitem),
GFP_KERNEL)) {
kfree(djrcv_dev);
djrcv_dev = NULL;
goto out;
}
kref_init(&djrcv_dev->kref);
list_add_tail(&djrcv_dev->list, &dj_hdev_list);
djrcv_dev->last_query = jiffies;
djrcv_dev->type = type;
}
if (application == HID_GD_KEYBOARD)
djrcv_dev->keyboard = hdev;
if (application == HID_GD_MOUSE)
djrcv_dev->mouse = hdev;
if (is_hidpp)
djrcv_dev->hidpp = hdev;
hid_set_drvdata(hdev, djrcv_dev);
out:
mutex_unlock(&dj_hdev_list_lock);
return djrcv_dev;
}
static void logi_dj_recv_destroy_djhid_device(struct dj_receiver_dev *djrcv_dev,
struct dj_workitem *workitem)
{
/* Called in delayed work context */
struct dj_device *dj_dev;
unsigned long flags;
spin_lock_irqsave(&djrcv_dev->lock, flags);
dj_dev = djrcv_dev->paired_dj_devices[workitem->device_index];
djrcv_dev->paired_dj_devices[workitem->device_index] = NULL;
spin_unlock_irqrestore(&djrcv_dev->lock, flags);
if (dj_dev != NULL) {
hid_destroy_device(dj_dev->hdev);
kfree(dj_dev);
} else {
hid_err(djrcv_dev->hidpp, "%s: can't destroy a NULL device\n",
__func__);
}
}
static void logi_dj_recv_add_djhid_device(struct dj_receiver_dev *djrcv_dev,
struct dj_workitem *workitem)
{
/* Called in delayed work context */
struct hid_device *djrcv_hdev = djrcv_dev->hidpp;
struct hid_device *dj_hiddev;
struct dj_device *dj_dev;
u8 device_index = workitem->device_index;
unsigned long flags;
/* Device index goes from 1 to 6, we need 3 bytes to store the
* semicolon, the index, and a null terminator
*/
unsigned char tmpstr[3];
/* We are the only one ever adding a device, no need to lock */
if (djrcv_dev->paired_dj_devices[device_index]) {
/* The device is already known. No need to reallocate it. */
dbg_hid("%s: device is already known\n", __func__);
return;
}
dj_hiddev = hid_allocate_device();
if (IS_ERR(dj_hiddev)) {
hid_err(djrcv_hdev, "%s: hid_allocate_dev failed\n", __func__);
return;
}
dj_hiddev->ll_driver = &logi_dj_ll_driver;
dj_hiddev->dev.parent = &djrcv_hdev->dev;
dj_hiddev->bus = BUS_USB;
dj_hiddev->vendor = djrcv_hdev->vendor;
dj_hiddev->product = (workitem->quad_id_msb << 8) |
workitem->quad_id_lsb;
if (workitem->device_type) {
const char *type_str = "Device";
switch (workitem->device_type) {
case 0x01: type_str = "Keyboard"; break;
case 0x02: type_str = "Mouse"; break;
case 0x03: type_str = "Numpad"; break;
case 0x04: type_str = "Presenter"; break;
case 0x07: type_str = "Remote Control"; break;
case 0x08: type_str = "Trackball"; break;
case 0x09: type_str = "Touchpad"; break;
}
snprintf(dj_hiddev->name, sizeof(dj_hiddev->name),
"Logitech Wireless %s PID:%04x",
type_str, dj_hiddev->product);
} else {
snprintf(dj_hiddev->name, sizeof(dj_hiddev->name),
"Logitech Unifying Device. Wireless PID:%04x",
dj_hiddev->product);
}
if (djrcv_dev->type == recvr_type_27mhz)
dj_hiddev->group = HID_GROUP_LOGITECH_27MHZ_DEVICE;
else
dj_hiddev->group = HID_GROUP_LOGITECH_DJ_DEVICE;
memcpy(dj_hiddev->phys, djrcv_hdev->phys, sizeof(djrcv_hdev->phys));
snprintf(tmpstr, sizeof(tmpstr), ":%d", device_index);
strlcat(dj_hiddev->phys, tmpstr, sizeof(dj_hiddev->phys));
dj_dev = kzalloc(sizeof(struct dj_device), GFP_KERNEL);
if (!dj_dev) {
hid_err(djrcv_hdev, "%s: failed allocating dj_dev\n", __func__);
goto dj_device_allocate_fail;
}
dj_dev->reports_supported = workitem->reports_supported;
dj_dev->hdev = dj_hiddev;
dj_dev->dj_receiver_dev = djrcv_dev;
dj_dev->device_index = device_index;
dj_hiddev->driver_data = dj_dev;
spin_lock_irqsave(&djrcv_dev->lock, flags);
djrcv_dev->paired_dj_devices[device_index] = dj_dev;
spin_unlock_irqrestore(&djrcv_dev->lock, flags);
if (hid_add_device(dj_hiddev)) {
hid_err(djrcv_hdev, "%s: failed adding dj_device\n", __func__);
goto hid_add_device_fail;
}
return;
hid_add_device_fail:
spin_lock_irqsave(&djrcv_dev->lock, flags);
djrcv_dev->paired_dj_devices[device_index] = NULL;
spin_unlock_irqrestore(&djrcv_dev->lock, flags);
kfree(dj_dev);
dj_device_allocate_fail:
hid_destroy_device(dj_hiddev);
}
static void delayedwork_callback(struct work_struct *work)
{
struct dj_receiver_dev *djrcv_dev =
container_of(work, struct dj_receiver_dev, work);
struct dj_workitem workitem;
unsigned long flags;
int count;
int retval;
dbg_hid("%s\n", __func__);
spin_lock_irqsave(&djrcv_dev->lock, flags);
/*
* Since we attach to multiple interfaces, we may get scheduled before
* we are bound to the HID++ interface, catch this.
*/
if (!djrcv_dev->ready) {
pr_warn("%s: delayedwork queued before hidpp interface was enumerated\n",
__func__);
spin_unlock_irqrestore(&djrcv_dev->lock, flags);
return;
}
count = kfifo_out(&djrcv_dev->notif_fifo, &workitem, sizeof(workitem));
if (count != sizeof(workitem)) {
spin_unlock_irqrestore(&djrcv_dev->lock, flags);
return;
}
if (!kfifo_is_empty(&djrcv_dev->notif_fifo))
schedule_work(&djrcv_dev->work);
spin_unlock_irqrestore(&djrcv_dev->lock, flags);
switch (workitem.type) {
case WORKITEM_TYPE_PAIRED:
logi_dj_recv_add_djhid_device(djrcv_dev, &workitem);
break;
case WORKITEM_TYPE_UNPAIRED:
logi_dj_recv_destroy_djhid_device(djrcv_dev, &workitem);
break;
case WORKITEM_TYPE_UNKNOWN:
retval = logi_dj_recv_query_paired_devices(djrcv_dev);
if (retval) {
hid_err(djrcv_dev->hidpp, "%s: logi_dj_recv_query_paired_devices error: %d\n",
__func__, retval);
}
break;
case WORKITEM_TYPE_EMPTY:
dbg_hid("%s: device list is empty\n", __func__);
break;
}
}
/*
* Sometimes we receive reports for which we do not have a paired dj_device
* associated with the device_index or report-type to forward the report to.
* This means that the original "device paired" notification corresponding
* to the dj_device never arrived to this driver. Possible reasons for this are:
* 1) hid-core discards all packets coming from a device during probe().
* 2) if the receiver is plugged into a KVM switch then the pairing reports
* are only forwarded to it if the focus is on this PC.
* This function deals with this by re-asking the receiver for the list of
* connected devices in the delayed work callback.
* This function MUST be called with djrcv->lock held.
*/
static void logi_dj_recv_queue_unknown_work(struct dj_receiver_dev *djrcv_dev)
{
struct dj_workitem workitem = { .type = WORKITEM_TYPE_UNKNOWN };
/* Rate limit queries done because of unhandeled reports to 2/sec */
if (time_before(jiffies, djrcv_dev->last_query + HZ / 2))
return;
kfifo_in(&djrcv_dev->notif_fifo, &workitem, sizeof(workitem));
schedule_work(&djrcv_dev->work);
}
static void logi_dj_recv_queue_notification(struct dj_receiver_dev *djrcv_dev,
struct dj_report *dj_report)
{
/* We are called from atomic context (tasklet && djrcv->lock held) */
struct dj_workitem workitem = {
.device_index = dj_report->device_index,
};
switch (dj_report->report_type) {
case REPORT_TYPE_NOTIF_DEVICE_PAIRED:
workitem.type = WORKITEM_TYPE_PAIRED;
if (dj_report->report_params[DEVICE_PAIRED_PARAM_SPFUNCTION] &
SPFUNCTION_DEVICE_LIST_EMPTY) {
workitem.type = WORKITEM_TYPE_EMPTY;
break;
}
/* fall-through */
case REPORT_TYPE_NOTIF_DEVICE_UNPAIRED:
workitem.quad_id_msb =
dj_report->report_params[DEVICE_PAIRED_PARAM_EQUAD_ID_MSB];
workitem.quad_id_lsb =
dj_report->report_params[DEVICE_PAIRED_PARAM_EQUAD_ID_LSB];
workitem.reports_supported = get_unaligned_le32(
dj_report->report_params +
DEVICE_PAIRED_RF_REPORT_TYPE);
workitem.reports_supported |= HIDPP;
if (dj_report->report_type == REPORT_TYPE_NOTIF_DEVICE_UNPAIRED)
workitem.type = WORKITEM_TYPE_UNPAIRED;
break;
default:
logi_dj_recv_queue_unknown_work(djrcv_dev);
return;
}
kfifo_in(&djrcv_dev->notif_fifo, &workitem, sizeof(workitem));
schedule_work(&djrcv_dev->work);
}
/*
* Some quad/bluetooth keyboards have a builtin touchpad in this case we see
* only 1 paired device with a device_type of REPORT_TYPE_KEYBOARD. For the
* touchpad to work we must also forward mouse input reports to the dj_hiddev
* created for the keyboard (instead of forwarding them to a second paired
* device with a device_type of REPORT_TYPE_MOUSE as we normally would).
*/
static const u16 kbd_builtin_touchpad_ids[] = {
0xb309, /* Dinovo Edge */
0xb30c, /* Dinovo Mini */
};
static void logi_hidpp_dev_conn_notif_equad(struct hid_device *hdev,
struct hidpp_event *hidpp_report,
struct dj_workitem *workitem)
{
struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
int i, id;
workitem->type = WORKITEM_TYPE_PAIRED;
workitem->device_type = hidpp_report->params[HIDPP_PARAM_DEVICE_INFO] &
HIDPP_DEVICE_TYPE_MASK;
workitem->quad_id_msb = hidpp_report->params[HIDPP_PARAM_EQUAD_MSB];
workitem->quad_id_lsb = hidpp_report->params[HIDPP_PARAM_EQUAD_LSB];
switch (workitem->device_type) {
case REPORT_TYPE_KEYBOARD:
workitem->reports_supported |= STD_KEYBOARD | MULTIMEDIA |
POWER_KEYS | MEDIA_CENTER |
HIDPP;
id = (workitem->quad_id_msb << 8) | workitem->quad_id_lsb;
for (i = 0; i < ARRAY_SIZE(kbd_builtin_touchpad_ids); i++) {
if (id == kbd_builtin_touchpad_ids[i]) {
workitem->reports_supported |= STD_MOUSE;
break;
}
}
break;
case REPORT_TYPE_MOUSE:
workitem->reports_supported |= STD_MOUSE | HIDPP;
if (djrcv_dev->type == recvr_type_mouse_only)
workitem->reports_supported |= MULTIMEDIA;
break;
}
}
static void logi_hidpp_dev_conn_notif_27mhz(struct hid_device *hdev,
struct hidpp_event *hidpp_report,
struct dj_workitem *workitem)
{
workitem->type = WORKITEM_TYPE_PAIRED;
workitem->quad_id_lsb = hidpp_report->params[HIDPP_PARAM_27MHZ_DEVID];
switch (hidpp_report->device_index) {
case 1: /* Index 1 is always a mouse */
case 2: /* Index 2 is always a mouse */
workitem->device_type = HIDPP_DEVICE_TYPE_MOUSE;
workitem->reports_supported |= STD_MOUSE | HIDPP;
break;
case 3: /* Index 3 is always the keyboard */
case 4: /* Index 4 is used for an optional separate numpad */
workitem->device_type = HIDPP_DEVICE_TYPE_KEYBOARD;
workitem->reports_supported |= STD_KEYBOARD | MULTIMEDIA |
POWER_KEYS | HIDPP;
break;
default:
hid_warn(hdev, "%s: unexpected device-index %d", __func__,
hidpp_report->device_index);
}
}
static void logi_hidpp_recv_queue_notif(struct hid_device *hdev,
struct hidpp_event *hidpp_report)
{
/* We are called from atomic context (tasklet && djrcv->lock held) */
struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
const char *device_type = "UNKNOWN";
struct dj_workitem workitem = {
.type = WORKITEM_TYPE_EMPTY,
.device_index = hidpp_report->device_index,
};
switch (hidpp_report->params[HIDPP_PARAM_PROTO_TYPE]) {
case 0x01:
device_type = "Bluetooth";
/* Bluetooth connect packet contents is the same as (e)QUAD */
logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
if (!(hidpp_report->params[HIDPP_PARAM_DEVICE_INFO] &
HIDPP_MANUFACTURER_MASK)) {
hid_info(hdev, "Non Logitech device connected on slot %d\n",
hidpp_report->device_index);
workitem.reports_supported &= ~HIDPP;
}
break;
case 0x02:
device_type = "27 Mhz";
logi_hidpp_dev_conn_notif_27mhz(hdev, hidpp_report, &workitem);
break;
case 0x03:
device_type = "QUAD or eQUAD";
logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
break;
case 0x04:
device_type = "eQUAD step 4 DJ";
logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
break;
case 0x05:
device_type = "DFU Lite";
break;
case 0x06:
device_type = "eQUAD step 4 Lite";
logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
break;
case 0x07:
device_type = "eQUAD step 4 Gaming";
logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
workitem.reports_supported |= STD_KEYBOARD;
break;
case 0x08:
device_type = "eQUAD step 4 for gamepads";
break;
case 0x0a:
device_type = "eQUAD nano Lite";
logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
break;
case 0x0c:
device_type = "eQUAD Lightspeed 1";
logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
workitem.reports_supported |= STD_KEYBOARD;
break;
case 0x0d:
device_type = "eQUAD Lightspeed 1.1";
logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
workitem.reports_supported |= STD_KEYBOARD;