summaryrefslogtreecommitdiff
path: root/drivers/hid/hid-playstation.c
blob: b1b5721b5d8f7a22cc6e3dbf1fb3c32b3c35c6e9 (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
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  HID driver for Sony DualSense(TM) controller.
 *
 *  Copyright (c) 2020 Sony Interactive Entertainment
 */

#include <linux/bits.h>
#include <linux/crc32.h>
#include <linux/device.h>
#include <linux/hid.h>
#include <linux/idr.h>
#include <linux/input/mt.h>
#include <linux/leds.h>
#include <linux/led-class-multicolor.h>
#include <linux/module.h>

#include <asm/unaligned.h>

#include "hid-ids.h"

/* List of connected playstation devices. */
static DEFINE_MUTEX(ps_devices_lock);
static LIST_HEAD(ps_devices_list);

static DEFINE_IDA(ps_player_id_allocator);

#define HID_PLAYSTATION_VERSION_PATCH 0x8000

/* Base class for playstation devices. */
struct ps_device {
	struct list_head list;
	struct hid_device *hdev;
	spinlock_t lock;

	uint32_t player_id;

	struct power_supply_desc battery_desc;
	struct power_supply *battery;
	uint8_t battery_capacity;
	int battery_status;

	const char *input_dev_name; /* Name of primary input device. */
	uint8_t mac_address[6]; /* Note: stored in little endian order. */
	uint32_t hw_version;
	uint32_t fw_version;

	int (*parse_report)(struct ps_device *dev, struct hid_report *report, u8 *data, int size);
};

/* Calibration data for playstation motion sensors. */
struct ps_calibration_data {
	int abs_code;
	short bias;
	int sens_numer;
	int sens_denom;
};

struct ps_led_info {
	const char *name;
	const char *color;
	enum led_brightness (*brightness_get)(struct led_classdev *cdev);
	int (*brightness_set)(struct led_classdev *cdev, enum led_brightness);
};

/* Seed values for DualShock4 / DualSense CRC32 for different report types. */
#define PS_INPUT_CRC32_SEED	0xA1
#define PS_OUTPUT_CRC32_SEED	0xA2
#define PS_FEATURE_CRC32_SEED	0xA3

#define DS_INPUT_REPORT_USB			0x01
#define DS_INPUT_REPORT_USB_SIZE		64
#define DS_INPUT_REPORT_BT			0x31
#define DS_INPUT_REPORT_BT_SIZE			78
#define DS_OUTPUT_REPORT_USB			0x02
#define DS_OUTPUT_REPORT_USB_SIZE		63
#define DS_OUTPUT_REPORT_BT			0x31
#define DS_OUTPUT_REPORT_BT_SIZE		78

#define DS_FEATURE_REPORT_CALIBRATION		0x05
#define DS_FEATURE_REPORT_CALIBRATION_SIZE	41
#define DS_FEATURE_REPORT_PAIRING_INFO		0x09
#define DS_FEATURE_REPORT_PAIRING_INFO_SIZE	20
#define DS_FEATURE_REPORT_FIRMWARE_INFO		0x20
#define DS_FEATURE_REPORT_FIRMWARE_INFO_SIZE	64

/* Button masks for DualSense input report. */
#define DS_BUTTONS0_HAT_SWITCH	GENMASK(3, 0)
#define DS_BUTTONS0_SQUARE	BIT(4)
#define DS_BUTTONS0_CROSS	BIT(5)
#define DS_BUTTONS0_CIRCLE	BIT(6)
#define DS_BUTTONS0_TRIANGLE	BIT(7)
#define DS_BUTTONS1_L1		BIT(0)
#define DS_BUTTONS1_R1		BIT(1)
#define DS_BUTTONS1_L2		BIT(2)
#define DS_BUTTONS1_R2		BIT(3)
#define DS_BUTTONS1_CREATE	BIT(4)
#define DS_BUTTONS1_OPTIONS	BIT(5)
#define DS_BUTTONS1_L3		BIT(6)
#define DS_BUTTONS1_R3		BIT(7)
#define DS_BUTTONS2_PS_HOME	BIT(0)
#define DS_BUTTONS2_TOUCHPAD	BIT(1)
#define DS_BUTTONS2_MIC_MUTE	BIT(2)

/* Status field of DualSense input report. */
#define DS_STATUS_BATTERY_CAPACITY	GENMASK(3, 0)
#define DS_STATUS_CHARGING		GENMASK(7, 4)
#define DS_STATUS_CHARGING_SHIFT	4

/*
 * Status of a DualSense touch point contact.
 * Contact IDs, with highest bit set are 'inactive'
 * and any associated data is then invalid.
 */
#define DS_TOUCH_POINT_INACTIVE BIT(7)

 /* Magic value required in tag field of Bluetooth output report. */
#define DS_OUTPUT_TAG 0x10
/* Flags for DualSense output report. */
#define DS_OUTPUT_VALID_FLAG0_COMPATIBLE_VIBRATION BIT(0)
#define DS_OUTPUT_VALID_FLAG0_HAPTICS_SELECT BIT(1)
#define DS_OUTPUT_VALID_FLAG1_MIC_MUTE_LED_CONTROL_ENABLE BIT(0)
#define DS_OUTPUT_VALID_FLAG1_POWER_SAVE_CONTROL_ENABLE BIT(1)
#define DS_OUTPUT_VALID_FLAG1_LIGHTBAR_CONTROL_ENABLE BIT(2)
#define DS_OUTPUT_VALID_FLAG1_RELEASE_LEDS BIT(3)
#define DS_OUTPUT_VALID_FLAG1_PLAYER_INDICATOR_CONTROL_ENABLE BIT(4)
#define DS_OUTPUT_VALID_FLAG2_LIGHTBAR_SETUP_CONTROL_ENABLE BIT(1)
#define DS_OUTPUT_POWER_SAVE_CONTROL_MIC_MUTE BIT(4)
#define DS_OUTPUT_LIGHTBAR_SETUP_LIGHT_OUT BIT(1)

/* DualSense hardware limits */
#define DS_ACC_RES_PER_G	8192
#define DS_ACC_RANGE		(4*DS_ACC_RES_PER_G)
#define DS_GYRO_RES_PER_DEG_S	1024
#define DS_GYRO_RANGE		(2048*DS_GYRO_RES_PER_DEG_S)
#define DS_TOUCHPAD_WIDTH	1920
#define DS_TOUCHPAD_HEIGHT	1080

struct dualsense {
	struct ps_device base;
	struct input_dev *gamepad;
	struct input_dev *sensors;
	struct input_dev *touchpad;

	/* Calibration data for accelerometer and gyroscope. */
	struct ps_calibration_data accel_calib_data[3];
	struct ps_calibration_data gyro_calib_data[3];

	/* Timestamp for sensor data */
	bool sensor_timestamp_initialized;
	uint32_t prev_sensor_timestamp;
	uint32_t sensor_timestamp_us;

	/* Compatible rumble state */
	bool update_rumble;
	uint8_t motor_left;
	uint8_t motor_right;

	/* RGB lightbar */
	struct led_classdev_mc lightbar;
	bool update_lightbar;
	uint8_t lightbar_red;
	uint8_t lightbar_green;
	uint8_t lightbar_blue;

	/* Microphone */
	bool update_mic_mute;
	bool mic_muted;
	bool last_btn_mic_state;

	/* Player leds */
	bool update_player_leds;
	uint8_t player_leds_state;
	struct led_classdev player_leds[5];

	struct work_struct output_worker;
	void *output_report_dmabuf;
	uint8_t output_seq; /* Sequence number for output report. */
};

struct dualsense_touch_point {
	uint8_t contact;
	uint8_t x_lo;
	uint8_t x_hi:4, y_lo:4;
	uint8_t y_hi;
} __packed;
static_assert(sizeof(struct dualsense_touch_point) == 4);

/* Main DualSense input report excluding any BT/USB specific headers. */
struct dualsense_input_report {
	uint8_t x, y;
	uint8_t rx, ry;
	uint8_t z, rz;
	uint8_t seq_number;
	uint8_t buttons[4];
	uint8_t reserved[4];

	/* Motion sensors */
	__le16 gyro[3]; /* x, y, z */
	__le16 accel[3]; /* x, y, z */
	__le32 sensor_timestamp;
	uint8_t reserved2;

	/* Touchpad */
	struct dualsense_touch_point points[2];

	uint8_t reserved3[12];
	uint8_t status;
	uint8_t reserved4[10];
} __packed;
/* Common input report size shared equals the size of the USB report minus 1 byte for ReportID. */
static_assert(sizeof(struct dualsense_input_report) == DS_INPUT_REPORT_USB_SIZE - 1);

/* Common data between DualSense BT/USB main output report. */
struct dualsense_output_report_common {
	uint8_t valid_flag0;
	uint8_t valid_flag1;

	/* For DualShock 4 compatibility mode. */
	uint8_t motor_right;
	uint8_t motor_left;

	/* Audio controls */
	uint8_t reserved[4];
	uint8_t mute_button_led;

	uint8_t power_save_control;
	uint8_t reserved2[28];

	/* LEDs and lightbar */
	uint8_t valid_flag2;
	uint8_t reserved3[2];
	uint8_t lightbar_setup;
	uint8_t led_brightness;
	uint8_t player_leds;
	uint8_t lightbar_red;
	uint8_t lightbar_green;
	uint8_t lightbar_blue;
} __packed;
static_assert(sizeof(struct dualsense_output_report_common) == 47);

struct dualsense_output_report_bt {
	uint8_t report_id; /* 0x31 */
	uint8_t seq_tag;
	uint8_t tag;
	struct dualsense_output_report_common common;
	uint8_t reserved[24];
	__le32 crc32;
} __packed;
static_assert(sizeof(struct dualsense_output_report_bt) == DS_OUTPUT_REPORT_BT_SIZE);

struct dualsense_output_report_usb {
	uint8_t report_id; /* 0x02 */
	struct dualsense_output_report_common common;
	uint8_t reserved[15];
} __packed;
static_assert(sizeof(struct dualsense_output_report_usb) == DS_OUTPUT_REPORT_USB_SIZE);

/*
 * The DualSense has a main output report used to control most features. It is
 * largely the same between Bluetooth and USB except for different headers and CRC.
 * This structure hide the differences between the two to simplify sending output reports.
 */
struct dualsense_output_report {
	uint8_t *data; /* Start of data */
	uint8_t len; /* Size of output report */

	/* Points to Bluetooth data payload in case for a Bluetooth report else NULL. */
	struct dualsense_output_report_bt *bt;
	/* Points to USB data payload in case for a USB report else NULL. */
	struct dualsense_output_report_usb *usb;
	/* Points to common section of report, so past any headers. */
	struct dualsense_output_report_common *common;
};

/*
 * Common gamepad buttons across DualShock 3 / 4 and DualSense.
 * Note: for device with a touchpad, touchpad button is not included
 *        as it will be part of the touchpad device.
 */
static const int ps_gamepad_buttons[] = {
	BTN_WEST, /* Square */
	BTN_NORTH, /* Triangle */
	BTN_EAST, /* Circle */
	BTN_SOUTH, /* Cross */
	BTN_TL, /* L1 */
	BTN_TR, /* R1 */
	BTN_TL2, /* L2 */
	BTN_TR2, /* R2 */
	BTN_SELECT, /* Create (PS5) / Share (PS4) */
	BTN_START, /* Option */
	BTN_THUMBL, /* L3 */
	BTN_THUMBR, /* R3 */
	BTN_MODE, /* PS Home */
};

static const struct {int x; int y; } ps_gamepad_hat_mapping[] = {
	{0, -1}, {1, -1}, {1, 0}, {1, 1}, {0, 1}, {-1, 1}, {-1, 0}, {-1, -1},
	{0, 0},
};

static void dualsense_set_lightbar(struct dualsense *ds, uint8_t red, uint8_t green, uint8_t blue);

/*
 * Add a new ps_device to ps_devices if it doesn't exist.
 * Return error on duplicate device, which can happen if the same
 * device is connected using both Bluetooth and USB.
 */
static int ps_devices_list_add(struct ps_device *dev)
{
	struct ps_device *entry;

	mutex_lock(&ps_devices_lock);
	list_for_each_entry(entry, &ps_devices_list, list) {
		if (!memcmp(entry->mac_address, dev->mac_address, sizeof(dev->mac_address))) {
			hid_err(dev->hdev, "Duplicate device found for MAC address %pMR.\n",
					dev->mac_address);
			mutex_unlock(&ps_devices_lock);
			return -EEXIST;
		}
	}

	list_add_tail(&dev->list, &ps_devices_list);
	mutex_unlock(&ps_devices_lock);
	return 0;
}

static int ps_devices_list_remove(struct ps_device *dev)
{
	mutex_lock(&ps_devices_lock);
	list_del(&dev->list);
	mutex_unlock(&ps_devices_lock);
	return 0;
}

static int ps_device_set_player_id(struct ps_device *dev)
{
	int ret = ida_alloc(&ps_player_id_allocator, GFP_KERNEL);

	if (ret < 0)
		return ret;

	dev->player_id = ret;
	return 0;
}

static void ps_device_release_player_id(struct ps_device *dev)
{
	ida_free(&ps_player_id_allocator, dev->player_id);

	dev->player_id = U32_MAX;
}

static struct input_dev *ps_allocate_input_dev(struct hid_device *hdev, const char *name_suffix)
{
	struct input_dev *input_dev;

	input_dev = devm_input_allocate_device(&hdev->dev);
	if (!input_dev)
		return ERR_PTR(-ENOMEM);

	input_dev->id.bustype = hdev->bus;
	input_dev->id.vendor = hdev->vendor;
	input_dev->id.product = hdev->product;
	input_dev->id.version = hdev->version;
	input_dev->uniq = hdev->uniq;

	if (name_suffix) {
		input_dev->name = devm_kasprintf(&hdev->dev, GFP_KERNEL, "%s %s", hdev->name,
				name_suffix);
		if (!input_dev->name)
			return ERR_PTR(-ENOMEM);
	} else {
		input_dev->name = hdev->name;
	}

	input_set_drvdata(input_dev, hdev);

	return input_dev;
}

static enum power_supply_property ps_power_supply_props[] = {
	POWER_SUPPLY_PROP_STATUS,
	POWER_SUPPLY_PROP_PRESENT,
	POWER_SUPPLY_PROP_CAPACITY,
	POWER_SUPPLY_PROP_SCOPE,
};

static int ps_battery_get_property(struct power_supply *psy,
		enum power_supply_property psp,
		union power_supply_propval *val)
{
	struct ps_device *dev = power_supply_get_drvdata(psy);
	uint8_t battery_capacity;
	int battery_status;
	unsigned long flags;
	int ret = 0;

	spin_lock_irqsave(&dev->lock, flags);
	battery_capacity = dev->battery_capacity;
	battery_status = dev->battery_status;
	spin_unlock_irqrestore(&dev->lock, flags);

	switch (psp) {
	case POWER_SUPPLY_PROP_STATUS:
		val->intval = battery_status;
		break;
	case POWER_SUPPLY_PROP_PRESENT:
		val->intval = 1;
		break;
	case POWER_SUPPLY_PROP_CAPACITY:
		val->intval = battery_capacity;
		break;
	case POWER_SUPPLY_PROP_SCOPE:
		val->intval = POWER_SUPPLY_SCOPE_DEVICE;
		break;
	default:
		ret = -EINVAL;
		break;
	}

	return ret;
}

static int ps_device_register_battery(struct ps_device *dev)
{
	struct power_supply *battery;
	struct power_supply_config battery_cfg = { .drv_data = dev };
	int ret;

	dev->battery_desc.type = POWER_SUPPLY_TYPE_BATTERY;
	dev->battery_desc.properties = ps_power_supply_props;
	dev->battery_desc.num_properties = ARRAY_SIZE(ps_power_supply_props);
	dev->battery_desc.get_property = ps_battery_get_property;
	dev->battery_desc.name = devm_kasprintf(&dev->hdev->dev, GFP_KERNEL,
			"ps-controller-battery-%pMR", dev->mac_address);
	if (!dev->battery_desc.name)
		return -ENOMEM;

	battery = devm_power_supply_register(&dev->hdev->dev, &dev->battery_desc, &battery_cfg);
	if (IS_ERR(battery)) {
		ret = PTR_ERR(battery);
		hid_err(dev->hdev, "Unable to register battery device: %d\n", ret);
		return ret;
	}
	dev->battery = battery;

	ret = power_supply_powers(dev->battery, &dev->hdev->dev);
	if (ret) {
		hid_err(dev->hdev, "Unable to activate battery device: %d\n", ret);
		return ret;
	}

	return 0;
}

/* Compute crc32 of HID data and compare against expected CRC. */
static bool ps_check_crc32(uint8_t seed, uint8_t *data, size_t len, uint32_t report_crc)
{
	uint32_t crc;

	crc = crc32_le(0xFFFFFFFF, &seed, 1);
	crc = ~crc32_le(crc, data, len);

	return crc == report_crc;
}

static struct input_dev *ps_gamepad_create(struct hid_device *hdev,
		int (*play_effect)(struct input_dev *, void *, struct ff_effect *))
{
	struct input_dev *gamepad;
	unsigned int i;
	int ret;

	gamepad = ps_allocate_input_dev(hdev, NULL);
	if (IS_ERR(gamepad))
		return ERR_CAST(gamepad);

	input_set_abs_params(gamepad, ABS_X, 0, 255, 0, 0);
	input_set_abs_params(gamepad, ABS_Y, 0, 255, 0, 0);
	input_set_abs_params(gamepad, ABS_Z, 0, 255, 0, 0);
	input_set_abs_params(gamepad, ABS_RX, 0, 255, 0, 0);
	input_set_abs_params(gamepad, ABS_RY, 0, 255, 0, 0);
	input_set_abs_params(gamepad, ABS_RZ, 0, 255, 0, 0);

	input_set_abs_params(gamepad, ABS_HAT0X, -1, 1, 0, 0);
	input_set_abs_params(gamepad, ABS_HAT0Y, -1, 1, 0, 0);

	for (i = 0; i < ARRAY_SIZE(ps_gamepad_buttons); i++)
		input_set_capability(gamepad, EV_KEY, ps_gamepad_buttons[i]);

#if IS_ENABLED(CONFIG_PLAYSTATION_FF)
	if (play_effect) {
		input_set_capability(gamepad, EV_FF, FF_RUMBLE);
		input_ff_create_memless(gamepad, NULL, play_effect);
	}
#endif

	ret = input_register_device(gamepad);
	if (ret)
		return ERR_PTR(ret);

	return gamepad;
}

static int ps_get_report(struct hid_device *hdev, uint8_t report_id, uint8_t *buf, size_t size)
{
	int ret;

	ret = hid_hw_raw_request(hdev, report_id, buf, size, HID_FEATURE_REPORT,
				 HID_REQ_GET_REPORT);
	if (ret < 0) {
		hid_err(hdev, "Failed to retrieve feature with reportID %d: %d\n", report_id, ret);
		return ret;
	}

	if (ret != size) {
		hid_err(hdev, "Invalid byte count transferred, expected %zu got %d\n", size, ret);
		return -EINVAL;
	}

	if (buf[0] != report_id) {
		hid_err(hdev, "Invalid reportID received, expected %d got %d\n", report_id, buf[0]);
		return -EINVAL;
	}

	if (hdev->bus == BUS_BLUETOOTH) {
		/* Last 4 bytes contains crc32. */
		uint8_t crc_offset = size - 4;
		uint32_t report_crc = get_unaligned_le32(&buf[crc_offset]);

		if (!ps_check_crc32(PS_FEATURE_CRC32_SEED, buf, crc_offset, report_crc)) {
			hid_err(hdev, "CRC check failed for reportID=%d\n", report_id);
			return -EILSEQ;
		}
	}

	return 0;
}

static int ps_led_register(struct ps_device *ps_dev, struct led_classdev *led,
		const struct ps_led_info *led_info)
{
	int ret;

	led->name = devm_kasprintf(&ps_dev->hdev->dev, GFP_KERNEL,
			"%s:%s:%s", ps_dev->input_dev_name, led_info->color, led_info->name);

	if (!led->name)
		return -ENOMEM;

	led->brightness = 0;
	led->max_brightness = 1;
	led->flags = LED_CORE_SUSPENDRESUME;
	led->brightness_get = led_info->brightness_get;
	led->brightness_set_blocking = led_info->brightness_set;

	ret = devm_led_classdev_register(&ps_dev->hdev->dev, led);
	if (ret) {
		hid_err(ps_dev->hdev, "Failed to register LED %s: %d\n", led_info->name, ret);
		return ret;
	}

	return 0;
}

/* Register a DualSense/DualShock4 RGB lightbar represented by a multicolor LED. */
static int ps_lightbar_register(struct ps_device *ps_dev, struct led_classdev_mc *lightbar_mc_dev,
	int (*brightness_set)(struct led_classdev *, enum led_brightness))
{
	struct hid_device *hdev = ps_dev->hdev;
	struct mc_subled *mc_led_info;
	struct led_classdev *led_cdev;
	int ret;

	mc_led_info = devm_kmalloc_array(&hdev->dev, 3, sizeof(*mc_led_info),
					 GFP_KERNEL | __GFP_ZERO);
	if (!mc_led_info)
		return -ENOMEM;

	mc_led_info[0].color_index = LED_COLOR_ID_RED;
	mc_led_info[1].color_index = LED_COLOR_ID_GREEN;
	mc_led_info[2].color_index = LED_COLOR_ID_BLUE;

	lightbar_mc_dev->subled_info = mc_led_info;
	lightbar_mc_dev->num_colors = 3;

	led_cdev = &lightbar_mc_dev->led_cdev;
	led_cdev->name = devm_kasprintf(&hdev->dev, GFP_KERNEL, "%s:rgb:indicator",
			ps_dev->input_dev_name);
	if (!led_cdev->name)
		return -ENOMEM;
	led_cdev->brightness = 255;
	led_cdev->max_brightness = 255;
	led_cdev->brightness_set_blocking = brightness_set;

	ret = devm_led_classdev_multicolor_register(&hdev->dev, lightbar_mc_dev);
	if (ret < 0) {
		hid_err(hdev, "Cannot register multicolor LED device\n");
		return ret;
	}

	return 0;
}

static struct input_dev *ps_sensors_create(struct hid_device *hdev, int accel_range, int accel_res,
		int gyro_range, int gyro_res)
{
	struct input_dev *sensors;
	int ret;

	sensors = ps_allocate_input_dev(hdev, "Motion Sensors");
	if (IS_ERR(sensors))
		return ERR_CAST(sensors);

	__set_bit(INPUT_PROP_ACCELEROMETER, sensors->propbit);
	__set_bit(EV_MSC, sensors->evbit);
	__set_bit(MSC_TIMESTAMP, sensors->mscbit);

	/* Accelerometer */
	input_set_abs_params(sensors, ABS_X, -accel_range, accel_range, 16, 0);
	input_set_abs_params(sensors, ABS_Y, -accel_range, accel_range, 16, 0);
	input_set_abs_params(sensors, ABS_Z, -accel_range, accel_range, 16, 0);
	input_abs_set_res(sensors, ABS_X, accel_res);
	input_abs_set_res(sensors, ABS_Y, accel_res);
	input_abs_set_res(sensors, ABS_Z, accel_res);

	/* Gyroscope */
	input_set_abs_params(sensors, ABS_RX, -gyro_range, gyro_range, 16, 0);
	input_set_abs_params(sensors, ABS_RY, -gyro_range, gyro_range, 16, 0);
	input_set_abs_params(sensors, ABS_RZ, -gyro_range, gyro_range, 16, 0);
	input_abs_set_res(sensors, ABS_RX, gyro_res);
	input_abs_set_res(sensors, ABS_RY, gyro_res);
	input_abs_set_res(sensors, ABS_RZ, gyro_res);

	ret = input_register_device(sensors);
	if (ret)
		return ERR_PTR(ret);

	return sensors;
}

static struct input_dev *ps_touchpad_create(struct hid_device *hdev, int width, int height,
		unsigned int num_contacts)
{
	struct input_dev *touchpad;
	int ret;

	touchpad = ps_allocate_input_dev(hdev, "Touchpad");
	if (IS_ERR(touchpad))
		return ERR_CAST(touchpad);

	/* Map button underneath touchpad to BTN_LEFT. */
	input_set_capability(touchpad, EV_KEY, BTN_LEFT);
	__set_bit(INPUT_PROP_BUTTONPAD, touchpad->propbit);

	input_set_abs_params(touchpad, ABS_MT_POSITION_X, 0, width - 1, 0, 0);
	input_set_abs_params(touchpad, ABS_MT_POSITION_Y, 0, height - 1, 0, 0);

	ret = input_mt_init_slots(touchpad, num_contacts, INPUT_MT_POINTER);
	if (ret)
		return ERR_PTR(ret);

	ret = input_register_device(touchpad);
	if (ret)
		return ERR_PTR(ret);

	return touchpad;
}

static ssize_t firmware_version_show(struct device *dev,
				struct device_attribute
				*attr, char *buf)
{
	struct hid_device *hdev = to_hid_device(dev);
	struct ps_device *ps_dev = hid_get_drvdata(hdev);

	return sysfs_emit(buf, "0x%08x\n", ps_dev->fw_version);
}

static DEVICE_ATTR_RO(firmware_version);

static ssize_t hardware_version_show(struct device *dev,
				struct device_attribute
				*attr, char *buf)
{
	struct hid_device *hdev = to_hid_device(dev);
	struct ps_device *ps_dev = hid_get_drvdata(hdev);

	return sysfs_emit(buf, "0x%08x\n", ps_dev->hw_version);
}

static DEVICE_ATTR_RO(hardware_version);

static struct attribute *ps_device_attributes[] = {
	&dev_attr_firmware_version.attr,
	&dev_attr_hardware_version.attr,
	NULL
};

static const struct attribute_group ps_device_attribute_group = {
	.attrs = ps_device_attributes,
};

static int dualsense_get_calibration_data(struct dualsense *ds)
{
	short gyro_pitch_bias, gyro_pitch_plus, gyro_pitch_minus;
	short gyro_yaw_bias, gyro_yaw_plus, gyro_yaw_minus;
	short gyro_roll_bias, gyro_roll_plus, gyro_roll_minus;
	short gyro_speed_plus, gyro_speed_minus;
	short acc_x_plus, acc_x_minus;
	short acc_y_plus, acc_y_minus;
	short acc_z_plus, acc_z_minus;
	int speed_2x;
	int range_2g;
	int ret = 0;
	uint8_t *buf;

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

	ret = ps_get_report(ds->base.hdev, DS_FEATURE_REPORT_CALIBRATION, buf,
			DS_FEATURE_REPORT_CALIBRATION_SIZE);
	if (ret) {
		hid_err(ds->base.hdev, "Failed to retrieve DualSense calibration info: %d\n", ret);
		goto err_free;
	}

	gyro_pitch_bias  = get_unaligned_le16(&buf[1]);
	gyro_yaw_bias    = get_unaligned_le16(&buf[3]);
	gyro_roll_bias   = get_unaligned_le16(&buf[5]);
	gyro_pitch_plus  = get_unaligned_le16(&buf[7]);
	gyro_pitch_minus = get_unaligned_le16(&buf[9]);
	gyro_yaw_plus    = get_unaligned_le16(&buf[11]);
	gyro_yaw_minus   = get_unaligned_le16(&buf[13]);
	gyro_roll_plus   = get_unaligned_le16(&buf[15]);
	gyro_roll_minus  = get_unaligned_le16(&buf[17]);
	gyro_speed_plus  = get_unaligned_le16(&buf[19]);
	gyro_speed_minus = get_unaligned_le16(&buf[21]);
	acc_x_plus       = get_unaligned_le16(&buf[23]);
	acc_x_minus      = get_unaligned_le16(&buf[25]);
	acc_y_plus       = get_unaligned_le16(&buf[27]);
	acc_y_minus      = get_unaligned_le16(&buf[29]);
	acc_z_plus       = get_unaligned_le16(&buf[31]);
	acc_z_minus      = get_unaligned_le16(&buf[33]);

	/*
	 * Set gyroscope calibration and normalization parameters.
	 * Data values will be normalized to 1/DS_GYRO_RES_PER_DEG_S degree/s.
	 */
	speed_2x = (gyro_speed_plus + gyro_speed_minus);
	ds->gyro_calib_data[0].abs_code = ABS_RX;
	ds->gyro_calib_data[0].bias = gyro_pitch_bias;
	ds->gyro_calib_data[0].sens_numer = speed_2x*DS_GYRO_RES_PER_DEG_S;
	ds->gyro_calib_data[0].sens_denom = gyro_pitch_plus - gyro_pitch_minus;

	ds->gyro_calib_data[1].abs_code = ABS_RY;
	ds->gyro_calib_data[1].bias = gyro_yaw_bias;
	ds->gyro_calib_data[1].sens_numer = speed_2x*DS_GYRO_RES_PER_DEG_S;
	ds->gyro_calib_data[1].sens_denom = gyro_yaw_plus - gyro_yaw_minus;

	ds->gyro_calib_data[2].abs_code = ABS_RZ;
	ds->gyro_calib_data[2].bias = gyro_roll_bias;
	ds->gyro_calib_data[2].sens_numer = speed_2x*DS_GYRO_RES_PER_DEG_S;
	ds->gyro_calib_data[2].sens_denom = gyro_roll_plus - gyro_roll_minus;

	/*
	 * Set accelerometer calibration and normalization parameters.
	 * Data values will be normalized to 1/DS_ACC_RES_PER_G g.
	 */
	range_2g = acc_x_plus - acc_x_minus;
	ds->accel_calib_data[0].abs_code = ABS_X;
	ds->accel_calib_data[0].bias = acc_x_plus - range_2g / 2;
	ds->accel_calib_data[0].sens_numer = 2*DS_ACC_RES_PER_G;
	ds->accel_calib_data[0].sens_denom = range_2g;

	range_2g = acc_y_plus - acc_y_minus;
	ds->accel_calib_data[1].abs_code = ABS_Y;
	ds->accel_calib_data[1].bias = acc_y_plus - range_2g / 2;
	ds->accel_calib_data[1].sens_numer = 2*DS_ACC_RES_PER_G;
	ds->accel_calib_data[1].sens_denom = range_2g;

	range_2g = acc_z_plus - acc_z_minus;
	ds->accel_calib_data[2].abs_code = ABS_Z;
	ds->accel_calib_data[2].bias = acc_z_plus - range_2g / 2;
	ds->accel_calib_data[2].sens_numer = 2*DS_ACC_RES_PER_G;
	ds->accel_calib_data[2].sens_denom = range_2g;

err_free:
	kfree(buf);
	return ret;
}

static int dualsense_get_firmware_info(struct dualsense *ds)
{
	uint8_t *buf;
	int ret;

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

	ret = ps_get_report(ds->base.hdev, DS_FEATURE_REPORT_FIRMWARE_INFO, buf,
			DS_FEATURE_REPORT_FIRMWARE_INFO_SIZE);
	if (ret) {
		hid_err(ds->base.hdev, "Failed to retrieve DualSense firmware info: %d\n", ret);
		goto err_free;
	}

	ds->base.hw_version = get_unaligned_le32(&buf[24]);
	ds->base.fw_version = get_unaligned_le32(&buf[28]);

err_free:
	kfree(buf);
	return ret;
}

static int dualsense_get_mac_address(struct dualsense *ds)
{
	uint8_t *buf;
	int ret = 0;

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

	ret = ps_get_report(ds->base.hdev, DS_FEATURE_REPORT_PAIRING_INFO, buf,
			DS_FEATURE_REPORT_PAIRING_INFO_SIZE);
	if (ret) {
		hid_err(ds->base.hdev, "Failed to retrieve DualSense pairing info: %d\n", ret);
		goto err_free;
	}

	memcpy(ds->base.mac_address, &buf[1], sizeof(ds->base.mac_address));

err_free:
	kfree(buf);
	return ret;
}

static int dualsense_lightbar_set_brightness(struct led_classdev *cdev,
	enum led_brightness brightness)
{
	struct led_classdev_mc *mc_cdev = lcdev_to_mccdev(cdev);
	struct dualsense *ds = container_of(mc_cdev, struct dualsense, lightbar);
	uint8_t red, green, blue;

	led_mc_calc_color_components(mc_cdev, brightness);
	red = mc_cdev->subled_info[0].brightness;
	green = mc_cdev->subled_info[1].brightness;
	blue = mc_cdev->subled_info[2].brightness;

	dualsense_set_lightbar(ds, red, green, blue);
	return 0;
}

static enum led_brightness dualsense_player_led_get_brightness(struct led_classdev *led)
{
	struct hid_device *hdev = to_hid_device(led->dev->parent);
	struct dualsense *ds = hid_get_drvdata(hdev);

	return !!(ds->player_leds_state & BIT(led - ds->player_leds));
}

static int dualsense_player_led_set_brightness(struct led_classdev *led, enum led_brightness value)
{
	struct hid_device *hdev = to_hid_device(led->dev->parent);
	struct dualsense *ds = hid_get_drvdata(hdev);
	unsigned long flags;
	unsigned int led_index;

	spin_lock_irqsave(&ds->base.lock, flags);

	led_index = led - ds->player_leds;
	if (value == LED_OFF)
		ds->player_leds_state &= ~BIT(led_index);
	else
		ds->player_leds_state |= BIT(led_index);

	ds->update_player_leds = true;
	spin_unlock_irqrestore(&ds->base.lock, flags);

	schedule_work(&ds->output_worker);

	return 0;
}

static void dualsense_init_output_report(struct dualsense *ds, struct dualsense_output_report *rp,
		void *buf)
{
	struct hid_device *hdev = ds->base.hdev;

	if (hdev->bus == BUS_BLUETOOTH) {
		struct dualsense_output_report_bt *bt = buf;

		memset(bt, 0, sizeof(*bt));
		bt->report_id = DS_OUTPUT_REPORT_BT;
		bt->tag = DS_OUTPUT_TAG; /* Tag must be set. Exact meaning is unclear. */

		/*
		 * Highest 4-bit is a sequence number, which needs to be increased
		 * every report. Lowest 4-bit is tag and can be zero for now.
		 */
		bt->seq_tag = (ds->output_seq << 4) | 0x0;
		if (++ds->output_seq == 16)
			ds->output_seq = 0;

		rp->data = buf;
		rp->len = sizeof(*bt);
		rp->bt = bt;
		rp->usb = NULL;
		rp->common = &bt->common;
	} else { /* USB */
		struct dualsense_output_report_usb *usb = buf;

		memset(usb, 0, sizeof(*usb));
		usb->report_id = DS_OUTPUT_REPORT_USB;

		rp->data = buf;
		rp->len = sizeof(*usb);
		rp->bt = NULL;
		rp->usb = usb;
		rp->common = &usb->common;
	}
}

/*
 * Helper function to send DualSense output reports. Applies a CRC at the end of a report
 * for Bluetooth reports.
 */
static void dualsense_send_output_report(struct dualsense *ds,
		struct dualsense_output_report *report)
{
	struct hid_device *hdev = ds->base.hdev;

	/* Bluetooth packets need to be signed with a CRC in the last 4 bytes. */
	if (report->bt) {
		uint32_t crc;
		uint8_t seed = PS_OUTPUT_CRC32_SEED;

		crc = crc32_le(0xFFFFFFFF, &seed, 1);
		crc = ~crc32_le(crc, report->data, report->len - 4);

		report->bt->crc32 = cpu_to_le32(crc);
	}

	hid_hw_output_report(hdev, report->data, report->len);
}

static void dualsense_output_worker(struct work_struct *work)
{
	struct dualsense *ds = container_of(work, struct dualsense, output_worker);
	struct dualsense_output_report report;
	struct dualsense_output_report_common *common;
	unsigned long flags;

	dualsense_init_output_report(ds, &report, ds->output_report_dmabuf);
	common = report.common;

	spin_lock_irqsave(&ds->base.lock, flags);

	if (ds->update_rumble) {
		/* Select classic rumble style haptics and enable it. */
		common->valid_flag0 |= DS_OUTPUT_VALID_FLAG0_HAPTICS_SELECT;
		common->valid_flag0 |= DS_OUTPUT_VALID_FLAG0_COMPATIBLE_VIBRATION;
		common->motor_left = ds->motor_left;
		common->motor_right = ds->motor_right;
		ds->update_rumble = false;
	}

	if (ds->update_lightbar) {
		common->valid_flag1 |= DS_OUTPUT_VALID_FLAG1_LIGHTBAR_CONTROL_ENABLE;
		common->lightbar_red = ds->lightbar_red;
		common->lightbar_green = ds->lightbar_green;
		common->lightbar_blue = ds->lightbar_blue;

		ds->update_lightbar = false;
	}

	if (ds->update_player_leds) {
		common->valid_flag1 |= DS_OUTPUT_VALID_FLAG1_PLAYER_INDICATOR_CONTROL_ENABLE;
		common->player_leds = ds->player_leds_state;

		ds->update_player_leds = false;
	}

	if (ds->update_mic_mute) {
		common->valid_flag1 |= DS_OUTPUT_VALID_FLAG1_MIC_MUTE_LED_CONTROL_ENABLE;
		common->mute_button_led = ds->mic_muted;

		if (ds->mic_muted) {
			/* Disable microphone */
			common->valid_flag1 |= DS_OUTPUT_VALID_FLAG1_POWER_SAVE_CONTROL_ENABLE;
			common->power_save_control |= DS_OUTPUT_POWER_SAVE_CONTROL_MIC_MUTE;
		} else {
			/* Enable microphone */
			common->valid_flag1 |= DS_OUTPUT_VALID_FLAG1_POWER_SAVE_CONTROL_ENABLE;
			common->power_save_control &= ~DS_OUTPUT_POWER_SAVE_CONTROL_MIC_MUTE;
		}

		ds->update_mic_mute = false;
	}

	spin_unlock_irqrestore(&ds->base.lock, flags);

	dualsense_send_output_report(ds, &report);
}

static int dualsense_parse_report(struct ps_device *ps_dev, struct hid_report *report,
		u8 *data, int size)
{
	struct hid_device *hdev = ps_dev->hdev;
	struct dualsense *ds = container_of(ps_dev, struct dualsense, base);
	struct dualsense_input_report *ds_report;
	uint8_t battery_data, battery_capacity, charging_status, value;
	int battery_status;
	uint32_t sensor_timestamp;
	bool btn_mic_state;
	unsigned long flags;
	int i;

	/*
	 * DualSense in USB uses the full HID report for reportID 1, but
	 * Bluetooth uses a minimal HID report for reportID 1 and reports
	 * the full report using reportID 49.
	 */
	if (hdev->bus == BUS_USB && report->id == DS_INPUT_REPORT_USB &&
			size == DS_INPUT_REPORT_USB_SIZE) {
		ds_report = (struct dualsense_input_report *)&data[1];
	} else if (hdev->bus == BUS_BLUETOOTH && report->id == DS_INPUT_REPORT_BT &&
			size == DS_INPUT_REPORT_BT_SIZE) {
		/* Last 4 bytes of input report contain crc32 */
		uint32_t report_crc = get_unaligned_le32(&data[size - 4]);

		if (!ps_check_crc32(PS_INPUT_CRC32_SEED, data, size - 4, report_crc)) {
			hid_err(hdev, "DualSense input CRC's check failed\n");
			return -EILSEQ;
		}

		ds_report = (struct dualsense_input_report *)&data[2];
	} else {
		hid_err(hdev, "Unhandled reportID=%d\n", report->id);
		return -1;
	}

	input_report_abs(ds->gamepad, ABS_X,  ds_report->x);
	input_report_abs(ds->gamepad, ABS_Y,  ds_report->y);
	input_report_abs(ds->gamepad, ABS_RX, ds_report->rx);
	input_report_abs(ds->gamepad, ABS_RY, ds_report->ry);
	input_report_abs(ds->gamepad, ABS_Z,  ds_report->z);
	input_report_abs(ds->gamepad, ABS_RZ, ds_report->rz);

	value = ds_report->buttons[0] & DS_BUTTONS0_HAT_SWITCH;
	if (value >= ARRAY_SIZE(ps_gamepad_hat_mapping))
		value = 8; /* center */
	input_report_abs(ds->gamepad, ABS_HAT0X, ps_gamepad_hat_mapping[value].x);
	input_report_abs(ds->gamepad, ABS_HAT0Y, ps_gamepad_hat_mapping[value].y);

	input_report_key(ds->gamepad, BTN_WEST,   ds_report->buttons[0] & DS_BUTTONS0_SQUARE);
	input_report_key(ds->gamepad, BTN_SOUTH,  ds_report->buttons[0] & DS_BUTTONS0_CROSS);
	input_report_key(ds->gamepad, BTN_EAST,   ds_report->buttons[0] & DS_BUTTONS0_CIRCLE);
	input_report_key(ds->gamepad, BTN_NORTH,  ds_report->buttons[0] & DS_BUTTONS0_TRIANGLE);
	input_report_key(ds->gamepad, BTN_TL,     ds_report->buttons[1] & DS_BUTTONS1_L1);
	input_report_key(ds->gamepad, BTN_TR,     ds_report->buttons[1] & DS_BUTTONS1_R1);
	input_report_key(ds->gamepad, BTN_TL2,    ds_report->buttons[1] & DS_BUTTONS1_L2);
	input_report_key(ds->gamepad, BTN_TR2,    ds_report->buttons[1] & DS_BUTTONS1_R2);
	input_report_key(ds->gamepad, BTN_SELECT, ds_report->buttons[1] & DS_BUTTONS1_CREATE);
	input_report_key(ds->gamepad, BTN_START,  ds_report->buttons[1] & DS_BUTTONS1_OPTIONS);
	input_report_key(ds->gamepad, BTN_THUMBL, ds_report->buttons[1] & DS_BUTTONS1_L3);
	input_report_key(ds->gamepad, BTN_THUMBR, ds_report->buttons[1] & DS_BUTTONS1_R3);
	input_report_key(ds->gamepad, BTN_MODE,   ds_report->buttons[2] & DS_BUTTONS2_PS_HOME);
	input_sync(ds->gamepad);

	/*
	 * The DualSense has an internal microphone, which can be muted through a mute button
	 * on the device. The driver is expected to read the button state and program the device
	 * to mute/unmute audio at the hardware level.
	 */
	btn_mic_state = !!(ds_report->buttons[2] & DS_BUTTONS2_MIC_MUTE);
	if (btn_mic_state && !ds->last_btn_mic_state) {
		spin_lock_irqsave(&ps_dev->lock, flags);
		ds->update_mic_mute = true;
		ds->mic_muted = !ds->mic_muted; /* toggle */
		spin_unlock_irqrestore(&ps_dev->lock, flags);

		/* Schedule updating of microphone state at hardware level. */
		schedule_work(&ds->output_worker);
	}
	ds->last_btn_mic_state = btn_mic_state;

	/* Parse and calibrate gyroscope data. */
	for (i = 0; i < ARRAY_SIZE(ds_report->gyro); i++) {
		int raw_data = (short)le16_to_cpu(ds_report->gyro[i]);
		int calib_data = mult_frac(ds->gyro_calib_data[i].sens_numer,
					   raw_data - ds->gyro_calib_data[i].bias,
					   ds->gyro_calib_data[i].sens_denom);

		input_report_abs(ds->sensors, ds->gyro_calib_data[i].abs_code, calib_data);
	}

	/* Parse and calibrate accelerometer data. */
	for (i = 0; i < ARRAY_SIZE(ds_report->accel); i++) {
		int raw_data = (short)le16_to_cpu(ds_report->accel[i]);
		int calib_data = mult_frac(ds->accel_calib_data[i].sens_numer,
					   raw_data - ds->accel_calib_data[i].bias,
					   ds->accel_calib_data[i].sens_denom);

		input_report_abs(ds->sensors, ds->accel_calib_data[i].abs_code, calib_data);
	}

	/* Convert timestamp (in 0.33us unit) to timestamp_us */
	sensor_timestamp = le32_to_cpu(ds_report->sensor_timestamp);
	if (!ds->sensor_timestamp_initialized) {
		ds->sensor_timestamp_us = DIV_ROUND_CLOSEST(sensor_timestamp, 3);
		ds->sensor_timestamp_initialized = true;
	} else {
		uint32_t delta;

		if (ds->prev_sensor_timestamp > sensor_timestamp)
			delta = (U32_MAX - ds->prev_sensor_timestamp + sensor_timestamp + 1);
		else
			delta = sensor_timestamp - ds->prev_sensor_timestamp;
		ds->sensor_timestamp_us += DIV_ROUND_CLOSEST(delta, 3);
	}
	ds->prev_sensor_timestamp = sensor_timestamp;
	input_event(ds->sensors, EV_MSC, MSC_TIMESTAMP, ds->sensor_timestamp_us);
	input_sync(ds->sensors);

	for (i = 0; i < ARRAY_SIZE(ds_report->points); i++) {
		struct dualsense_touch_point *point = &ds_report->points[i];
		bool active = (point->contact & DS_TOUCH_POINT_INACTIVE) ? false : true;

		input_mt_slot(ds->touchpad, i);
		input_mt_report_slot_state(ds->touchpad, MT_TOOL_FINGER, active);

		if (active) {
			int x = (point->x_hi << 8) | point->x_lo;
			int y = (point->y_hi << 4) | point->y_lo;

			input_report_abs(ds->touchpad, ABS_MT_POSITION_X, x);
			input_report_abs(ds->touchpad, ABS_MT_POSITION_Y, y);
		}
	}
	input_mt_sync_frame(ds->touchpad);
	input_report_key(ds->touchpad, BTN_LEFT, ds_report->buttons[2] & DS_BUTTONS2_TOUCHPAD);
	input_sync(ds->touchpad);

	battery_data = ds_report->status & DS_STATUS_BATTERY_CAPACITY;
	charging_status = (ds_report->status & DS_STATUS_CHARGING) >> DS_STATUS_CHARGING_SHIFT;

	switch (charging_status) {
	case 0x0:
		/*
		 * Each unit of battery data corresponds to 10%
		 * 0 = 0-9%, 1 = 10-19%, .. and 10 = 100%
		 */
		battery_capacity = min(battery_data * 10 + 5, 100);
		battery_status = POWER_SUPPLY_STATUS_DISCHARGING;
		break;
	case 0x1:
		battery_capacity = min(battery_data * 10 + 5, 100);
		battery_status = POWER_SUPPLY_STATUS_CHARGING;
		break;
	case 0x2:
		battery_capacity = 100;
		battery_status = POWER_SUPPLY_STATUS_FULL;
		break;
	case 0xa: /* voltage or temperature out of range */
	case 0xb: /* temperature error */
		battery_capacity = 0;
		battery_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
		break;
	case 0xf: /* charging error */
	default:
		battery_capacity = 0;
		battery_status = POWER_SUPPLY_STATUS_UNKNOWN;
	}

	spin_lock_irqsave(&ps_dev->lock, flags);
	ps_dev->battery_capacity = battery_capacity;
	ps_dev->battery_status = battery_status;
	spin_unlock_irqrestore(&ps_dev->lock, flags);

	return 0;
}

static int dualsense_play_effect(struct input_dev *dev, void *data, struct ff_effect *effect)
{
	struct hid_device *hdev = input_get_drvdata(dev);
	struct dualsense *ds = hid_get_drvdata(hdev);
	unsigned long flags;

	if (effect->type != FF_RUMBLE)
		return 0;

	spin_lock_irqsave(&ds->base.lock, flags);
	ds->update_rumble = true;
	ds->motor_left = effect->u.rumble.strong_magnitude / 256;
	ds->motor_right = effect->u.rumble.weak_magnitude / 256;
	spin_unlock_irqrestore(&ds->base.lock, flags);

	schedule_work(&ds->output_worker);
	return 0;
}

static int dualsense_reset_leds(struct dualsense *ds)
{
	struct dualsense_output_report report;
	uint8_t *buf;

	buf = kzalloc(sizeof(struct dualsense_output_report_bt), GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	dualsense_init_output_report(ds, &report, buf);
	/*
	 * On Bluetooth the DualSense outputs an animation on the lightbar
	 * during startup and maintains a color afterwards. We need to explicitly
	 * reconfigure the lightbar before we can do any programming later on.
	 * In USB the lightbar is not on by default, but redoing the setup there
	 * doesn't hurt.
	 */
	report.common->valid_flag2 = DS_OUTPUT_VALID_FLAG2_LIGHTBAR_SETUP_CONTROL_ENABLE;
	report.common->lightbar_setup = DS_OUTPUT_LIGHTBAR_SETUP_LIGHT_OUT; /* Fade light out. */
	dualsense_send_output_report(ds, &report);

	kfree(buf);
	return 0;
}

static void dualsense_set_lightbar(struct dualsense *ds, uint8_t red, uint8_t green, uint8_t blue)
{
	unsigned long flags;

	spin_lock_irqsave(&ds->base.lock, flags);
	ds->update_lightbar = true;
	ds->lightbar_red = red;
	ds->lightbar_green = green;
	ds->lightbar_blue = blue;
	spin_unlock_irqrestore(&ds->base.lock, flags);

	schedule_work(&ds->output_worker);
}

static void dualsense_set_player_leds(struct dualsense *ds)
{
	/*
	 * The DualSense controller has a row of 5 LEDs used for player ids.
	 * Behavior on the PlayStation 5 console is to center the player id
	 * across the LEDs, so e.g. player 1 would be "--x--" with x being 'on'.
	 * Follow a similar mapping here.
	 */
	static const int player_ids[5] = {
		BIT(2),
		BIT(3) | BIT(1),
		BIT(4) | BIT(2) | BIT(0),
		BIT(4) | BIT(3) | BIT(1) | BIT(0),
		BIT(4) | BIT(3) | BIT(2) | BIT(1) | BIT(0)
	};

	uint8_t player_id = ds->base.player_id % ARRAY_SIZE(player_ids);

	ds->update_player_leds = true;
	ds->player_leds_state = player_ids[player_id];
	schedule_work(&ds->output_worker);
}

static struct ps_device *dualsense_create(struct hid_device *hdev)
{
	struct dualsense *ds;
	struct ps_device *ps_dev;
	uint8_t max_output_report_size;
	int i, ret;

	static const struct ps_led_info player_leds_info[] = {
		{ LED_FUNCTION_PLAYER1, "white", dualsense_player_led_get_brightness,
				dualsense_player_led_set_brightness },
		{ LED_FUNCTION_PLAYER2, "white", dualsense_player_led_get_brightness,
				dualsense_player_led_set_brightness },
		{ LED_FUNCTION_PLAYER3, "white", dualsense_player_led_get_brightness,
				dualsense_player_led_set_brightness },
		{ LED_FUNCTION_PLAYER4, "white", dualsense_player_led_get_brightness,
				dualsense_player_led_set_brightness },
		{ LED_FUNCTION_PLAYER5, "white", dualsense_player_led_get_brightness,
				dualsense_player_led_set_brightness }
	};

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

	/*
	 * Patch version to allow userspace to distinguish between
	 * hid-generic vs hid-playstation axis and button mapping.
	 */
	hdev->version |= HID_PLAYSTATION_VERSION_PATCH;

	ps_dev = &ds->base;
	ps_dev->hdev = hdev;
	spin_lock_init(&ps_dev->lock);
	ps_dev->battery_capacity = 100; /* initial value until parse_report. */
	ps_dev->battery_status = POWER_SUPPLY_STATUS_UNKNOWN;
	ps_dev->parse_report = dualsense_parse_report;
	INIT_WORK(&ds->output_worker, dualsense_output_worker);
	hid_set_drvdata(hdev, ds);

	max_output_report_size = sizeof(struct dualsense_output_report_bt);
	ds->output_report_dmabuf = devm_kzalloc(&hdev->dev, max_output_report_size, GFP_KERNEL);
	if (!ds->output_report_dmabuf)
		return ERR_PTR(-ENOMEM);

	ret = dualsense_get_mac_address(ds);
	if (ret) {
		hid_err(hdev, "Failed to get MAC address from DualSense\n");
		return ERR_PTR(ret);
	}
	snprintf(hdev->uniq, sizeof(hdev->uniq), "%pMR", ds->base.mac_address);

	ret = dualsense_get_firmware_info(ds);
	if (ret) {
		hid_err(hdev, "Failed to get firmware info from DualSense\n");
		return ERR_PTR(ret);
	}

	ret = ps_devices_list_add(ps_dev);
	if (ret)
		return ERR_PTR(ret);

	ret = dualsense_get_calibration_data(ds);
	if (ret) {
		hid_err(hdev, "Failed to get calibration data from DualSense\n");
		goto err;
	}

	ds->gamepad = ps_gamepad_create(hdev, dualsense_play_effect);
	if (IS_ERR(ds->gamepad)) {
		ret = PTR_ERR(ds->gamepad);
		goto err;
	}
	/* Use gamepad input device name as primary device name for e.g. LEDs */
	ps_dev->input_dev_name = dev_name(&ds->gamepad->dev);

	ds->sensors = ps_sensors_create(hdev, DS_ACC_RANGE, DS_ACC_RES_PER_G,
			DS_GYRO_RANGE, DS_GYRO_RES_PER_DEG_S);
	if (IS_ERR(ds->sensors)) {
		ret = PTR_ERR(ds->sensors);
		goto err;
	}

	ds->touchpad = ps_touchpad_create(hdev, DS_TOUCHPAD_WIDTH, DS_TOUCHPAD_HEIGHT, 2);
	if (IS_ERR(ds->touchpad)) {
		ret = PTR_ERR(ds->touchpad);
		goto err;
	}

	ret = ps_device_register_battery(ps_dev);
	if (ret)
		goto err;

	/*
	 * The hardware may have control over the LEDs (e.g. in Bluetooth on startup).
	 * Reset the LEDs (lightbar, mute, player leds), so we can control them
	 * from software.
	 */
	ret = dualsense_reset_leds(ds);
	if (ret)
		goto err;

	ret = ps_lightbar_register(ps_dev, &ds->lightbar, dualsense_lightbar_set_brightness);
	if (ret)
		goto err;

	/* Set default lightbar color. */
	dualsense_set_lightbar(ds, 0, 0, 128); /* blue */

	for (i = 0; i < ARRAY_SIZE(player_leds_info); i++) {
		const struct ps_led_info *led_info = &player_leds_info[i];

		ret = ps_led_register(ps_dev, &ds->player_leds[i], led_info);
		if (ret < 0)
			goto err;
	}

	ret = ps_device_set_player_id(ps_dev);
	if (ret) {
		hid_err(hdev, "Failed to assign player id for DualSense: %d\n", ret);
		goto err;
	}

	/* Set player LEDs to our player id. */
	dualsense_set_player_leds(ds);

	/*
	 * Reporting hardware and firmware is important as there are frequent updates, which
	 * can change behavior.
	 */
	hid_info(hdev, "Registered DualSense controller hw_version=0x%08x fw_version=0x%08x\n",
			ds->base.hw_version, ds->base.fw_version);

	return &ds->base;

err:
	ps_devices_list_remove(ps_dev);
	return ERR_PTR(ret);
}

static int ps_raw_event(struct hid_device *hdev, struct hid_report *report,
		u8 *data, int size)
{
	struct ps_device *dev = hid_get_drvdata(hdev);

	if (dev && dev->parse_report)
		return dev->parse_report(dev, report, data, size);

	return 0;
}

static int ps_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
	struct ps_device *dev;
	int ret;

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

	ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW);
	if (ret) {
		hid_err(hdev, "Failed to start HID device\n");
		return ret;
	}

	ret = hid_hw_open(hdev);
	if (ret) {
		hid_err(hdev, "Failed to open HID device\n");
		goto err_stop;
	}

	if (hdev->product == USB_DEVICE_ID_SONY_PS5_CONTROLLER) {
		dev = dualsense_create(hdev);
		if (IS_ERR(dev)) {
			hid_err(hdev, "Failed to create dualsense.\n");
			ret = PTR_ERR(dev);
			goto err_close;
		}
	}

	ret = devm_device_add_group(&hdev->dev, &ps_device_attribute_group);
	if (ret) {
		hid_err(hdev, "Failed to register sysfs nodes.\n");
		goto err_close;
	}

	return ret;

err_close:
	hid_hw_close(hdev);
err_stop:
	hid_hw_stop(hdev);
	return ret;
}

static void ps_remove(struct hid_device *hdev)
{
	struct ps_device *dev = hid_get_drvdata(hdev);

	ps_devices_list_remove(dev);
	ps_device_release_player_id(dev);

	hid_hw_close(hdev);
	hid_hw_stop(hdev);
}

static const struct hid_device_id ps_devices[] = {
	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS5_CONTROLLER) },
	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS5_CONTROLLER) },
	{ }
};
MODULE_DEVICE_TABLE(hid, ps_devices);

static struct hid_driver ps_driver = {
	.name		= "playstation",
	.id_table	= ps_devices,
	.probe		= ps_probe,
	.remove		= ps_remove,
	.raw_event	= ps_raw_event,
};

static int __init ps_init(void)
{
	return hid_register_driver(&ps_driver);
}

static void __exit ps_exit(void)
{
	hid_unregister_driver(&ps_driver);
	ida_destroy(&ps_player_id_allocator);
}

module_init(ps_init);
module_exit(ps_exit);

MODULE_AUTHOR("Sony Interactive Entertainment");
MODULE_DESCRIPTION("HID Driver for PlayStation peripherals.");
MODULE_LICENSE("GPL");