summaryrefslogtreecommitdiff
path: root/drivers/iio/accel/kxcjk-1013.c
blob: 736231d5f636e03cf26200466ee2ec2a710ff29e (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
/*
 * KXCJK-1013 3-axis accelerometer driver
 * Copyright (c) 2014, Intel Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 */

#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/bitops.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/acpi.h>
#include <linux/gpio/consumer.h>
#include <linux/pm.h>
#include <linux/pm_runtime.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#include <linux/iio/buffer.h>
#include <linux/iio/trigger.h>
#include <linux/iio/events.h>
#include <linux/iio/trigger_consumer.h>
#include <linux/iio/triggered_buffer.h>
#include <linux/iio/accel/kxcjk_1013.h>

#define KXCJK1013_DRV_NAME "kxcjk1013"
#define KXCJK1013_IRQ_NAME "kxcjk1013_event"

#define KXCJK1013_REG_XOUT_L		0x06
/*
 * From low byte X axis register, all the other addresses of Y and Z can be
 * obtained by just applying axis offset. The following axis defines are just
 * provide clarity, but not used.
 */
#define KXCJK1013_REG_XOUT_H		0x07
#define KXCJK1013_REG_YOUT_L		0x08
#define KXCJK1013_REG_YOUT_H		0x09
#define KXCJK1013_REG_ZOUT_L		0x0A
#define KXCJK1013_REG_ZOUT_H		0x0B

#define KXCJK1013_REG_DCST_RESP		0x0C
#define KXCJK1013_REG_WHO_AM_I		0x0F
#define KXCJK1013_REG_INT_SRC1		0x16
#define KXCJK1013_REG_INT_SRC2		0x17
#define KXCJK1013_REG_STATUS_REG	0x18
#define KXCJK1013_REG_INT_REL		0x1A
#define KXCJK1013_REG_CTRL1		0x1B
#define KXCJK1013_REG_CTRL2		0x1D
#define KXCJK1013_REG_INT_CTRL1		0x1E
#define KXCJK1013_REG_INT_CTRL2		0x1F
#define KXCJK1013_REG_DATA_CTRL		0x21
#define KXCJK1013_REG_WAKE_TIMER	0x29
#define KXCJK1013_REG_SELF_TEST		0x3A
#define KXCJK1013_REG_WAKE_THRES	0x6A

#define KXCJK1013_REG_CTRL1_BIT_PC1	BIT(7)
#define KXCJK1013_REG_CTRL1_BIT_RES	BIT(6)
#define KXCJK1013_REG_CTRL1_BIT_DRDY	BIT(5)
#define KXCJK1013_REG_CTRL1_BIT_GSEL1	BIT(4)
#define KXCJK1013_REG_CTRL1_BIT_GSEL0	BIT(3)
#define KXCJK1013_REG_CTRL1_BIT_WUFE	BIT(1)
#define KXCJK1013_REG_INT_REG1_BIT_IEA	BIT(4)
#define KXCJK1013_REG_INT_REG1_BIT_IEN	BIT(5)

#define KXCJK1013_DATA_MASK_12_BIT	0x0FFF
#define KXCJK1013_MAX_STARTUP_TIME_US	100000

#define KXCJK1013_SLEEP_DELAY_MS	2000

#define KXCJK1013_REG_INT_SRC2_BIT_ZP	BIT(0)
#define KXCJK1013_REG_INT_SRC2_BIT_ZN	BIT(1)
#define KXCJK1013_REG_INT_SRC2_BIT_YP	BIT(2)
#define KXCJK1013_REG_INT_SRC2_BIT_YN	BIT(3)
#define KXCJK1013_REG_INT_SRC2_BIT_XP	BIT(4)
#define KXCJK1013_REG_INT_SRC2_BIT_XN	BIT(5)

#define KXCJK1013_DEFAULT_WAKE_THRES	1

struct kxcjk1013_data {
	struct i2c_client *client;
	struct iio_trigger *dready_trig;
	struct iio_trigger *motion_trig;
	struct mutex mutex;
	s16 buffer[8];
	u8 odr_bits;
	u8 range;
	int wake_thres;
	int wake_dur;
	bool active_high_intr;
	bool dready_trigger_on;
	int ev_enable_state;
	bool motion_trigger_on;
	int64_t timestamp;
};

enum kxcjk1013_axis {
	AXIS_X,
	AXIS_Y,
	AXIS_Z,
};

enum kxcjk1013_mode {
	STANDBY,
	OPERATION,
};

enum kxcjk1013_range {
	KXCJK1013_RANGE_2G,
	KXCJK1013_RANGE_4G,
	KXCJK1013_RANGE_8G,
};

static const struct {
	int val;
	int val2;
	int odr_bits;
} samp_freq_table[] = { {0, 781000, 0x08}, {1, 563000, 0x09},
			{3, 125000, 0x0A}, {6, 250000, 0x0B}, {12, 500000, 0},
			{25, 0, 0x01}, {50, 0, 0x02}, {100, 0, 0x03},
			{200, 0, 0x04}, {400, 0, 0x05}, {800, 0, 0x06},
			{1600, 0, 0x07} };

/* Refer to section 4 of the specification */
static const struct {
	int odr_bits;
	int usec;
} odr_start_up_times[] = { {0x08, 100000}, {0x09, 100000}, {0x0A, 100000},
			   {0x0B, 100000}, { 0, 80000}, {0x01, 41000},
			   {0x02, 21000}, {0x03, 11000}, {0x04, 6400},
			   {0x05, 3900}, {0x06, 2700}, {0x07, 2100} };

static const struct {
	u16 scale;
	u8 gsel_0;
	u8 gsel_1;
} KXCJK1013_scale_table[] = { {9582, 0, 0},
			      {19163, 1, 0},
			      {38326, 0, 1} };

static const struct {
	int val;
	int val2;
	int odr_bits;
} wake_odr_data_rate_table[] = { {0, 781000, 0x00},
				 {1, 563000, 0x01},
				 {3, 125000, 0x02},
				 {6, 250000, 0x03},
				 {12, 500000, 0x04},
				 {25, 0, 0x05},
				 {50, 0, 0x06},
				 {100, 0, 0x06},
				 {200, 0, 0x06},
				 {400, 0, 0x06},
				 {800, 0, 0x06},
				 {1600, 0, 0x06} };

static int kxcjk1013_set_mode(struct kxcjk1013_data *data,
			      enum kxcjk1013_mode mode)
{
	int ret;

	ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1);
	if (ret < 0) {
		dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
		return ret;
	}

	if (mode == STANDBY)
		ret &= ~KXCJK1013_REG_CTRL1_BIT_PC1;
	else
		ret |= KXCJK1013_REG_CTRL1_BIT_PC1;

	ret = i2c_smbus_write_byte_data(data->client,
					KXCJK1013_REG_CTRL1, ret);
	if (ret < 0) {
		dev_err(&data->client->dev, "Error writing reg_ctrl1\n");
		return ret;
	}

	return 0;
}

static int kxcjk1013_get_mode(struct kxcjk1013_data *data,
			      enum kxcjk1013_mode *mode)
{
	int ret;

	ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1);
	if (ret < 0) {
		dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
		return ret;
	}

	if (ret & KXCJK1013_REG_CTRL1_BIT_PC1)
		*mode = OPERATION;
	else
		*mode = STANDBY;

	return 0;
}

static int kxcjk1013_set_range(struct kxcjk1013_data *data, int range_index)
{
	int ret;

	ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1);
	if (ret < 0) {
		dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
		return ret;
	}

	ret |= (KXCJK1013_scale_table[range_index].gsel_0 << 3);
	ret |= (KXCJK1013_scale_table[range_index].gsel_1 << 4);

	ret = i2c_smbus_write_byte_data(data->client,
					KXCJK1013_REG_CTRL1,
					ret);
	if (ret < 0) {
		dev_err(&data->client->dev, "Error writing reg_ctrl1\n");
		return ret;
	}

	data->range = range_index;

	return 0;
}

static int kxcjk1013_chip_init(struct kxcjk1013_data *data)
{
	int ret;

	ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_WHO_AM_I);
	if (ret < 0) {
		dev_err(&data->client->dev, "Error reading who_am_i\n");
		return ret;
	}

	dev_dbg(&data->client->dev, "KXCJK1013 Chip Id %x\n", ret);

	ret = kxcjk1013_set_mode(data, STANDBY);
	if (ret < 0)
		return ret;

	ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1);
	if (ret < 0) {
		dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
		return ret;
	}

	/* Set 12 bit mode */
	ret |= KXCJK1013_REG_CTRL1_BIT_RES;

	ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_CTRL1,
					ret);
	if (ret < 0) {
		dev_err(&data->client->dev, "Error reading reg_ctrl\n");
		return ret;
	}

	/* Setting range to 4G */
	ret = kxcjk1013_set_range(data, KXCJK1013_RANGE_4G);
	if (ret < 0)
		return ret;

	ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_DATA_CTRL);
	if (ret < 0) {
		dev_err(&data->client->dev, "Error reading reg_data_ctrl\n");
		return ret;
	}

	data->odr_bits = ret;

	/* Set up INT polarity */
	ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_CTRL1);
	if (ret < 0) {
		dev_err(&data->client->dev, "Error reading reg_int_ctrl1\n");
		return ret;
	}

	if (data->active_high_intr)
		ret |= KXCJK1013_REG_INT_REG1_BIT_IEA;
	else
		ret &= ~KXCJK1013_REG_INT_REG1_BIT_IEA;

	ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_INT_CTRL1,
					ret);
	if (ret < 0) {
		dev_err(&data->client->dev, "Error writing reg_int_ctrl1\n");
		return ret;
	}

	ret = kxcjk1013_set_mode(data, OPERATION);
	if (ret < 0)
		return ret;

	data->wake_thres = KXCJK1013_DEFAULT_WAKE_THRES;

	return 0;
}

static int kxcjk1013_get_startup_times(struct kxcjk1013_data *data)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(odr_start_up_times); ++i) {
		if (odr_start_up_times[i].odr_bits == data->odr_bits)
			return odr_start_up_times[i].usec;
	}

	return KXCJK1013_MAX_STARTUP_TIME_US;
}

static int kxcjk1013_set_power_state(struct kxcjk1013_data *data, bool on)
{
	int ret;

	if (on)
		ret = pm_runtime_get_sync(&data->client->dev);
	else {
		pm_runtime_mark_last_busy(&data->client->dev);
		ret = pm_runtime_put_autosuspend(&data->client->dev);
	}
	if (ret < 0) {
		dev_err(&data->client->dev,
			"Failed: kxcjk1013_set_power_state for %d\n", on);
		return ret;
	}

	return 0;
}

static int kxcjk1013_chip_update_thresholds(struct kxcjk1013_data *data)
{
	int ret;

	ret = i2c_smbus_write_byte_data(data->client,
					KXCJK1013_REG_WAKE_TIMER,
					data->wake_dur);
	if (ret < 0) {
		dev_err(&data->client->dev,
			"Error writing reg_wake_timer\n");
		return ret;
	}

	ret = i2c_smbus_write_byte_data(data->client,
					KXCJK1013_REG_WAKE_THRES,
					data->wake_thres);
	if (ret < 0) {
		dev_err(&data->client->dev, "Error writing reg_wake_thres\n");
		return ret;
	}

	return 0;
}

static int kxcjk1013_setup_any_motion_interrupt(struct kxcjk1013_data *data,
						bool status)
{
	int ret;
	enum kxcjk1013_mode store_mode;

	ret = kxcjk1013_get_mode(data, &store_mode);
	if (ret < 0)
		return ret;

	/* This is requirement by spec to change state to STANDBY */
	ret = kxcjk1013_set_mode(data, STANDBY);
	if (ret < 0)
		return ret;

	ret = kxcjk1013_chip_update_thresholds(data);
	if (ret < 0)
		return ret;

	ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_CTRL1);
	if (ret < 0) {
		dev_err(&data->client->dev, "Error reading reg_int_ctrl1\n");
		return ret;
	}

	if (status)
		ret |= KXCJK1013_REG_INT_REG1_BIT_IEN;
	else
		ret &= ~KXCJK1013_REG_INT_REG1_BIT_IEN;

	ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_INT_CTRL1,
					ret);
	if (ret < 0) {
		dev_err(&data->client->dev, "Error writing reg_int_ctrl1\n");
		return ret;
	}

	ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1);
	if (ret < 0) {
		dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
		return ret;
	}

	if (status)
		ret |= KXCJK1013_REG_CTRL1_BIT_WUFE;
	else
		ret &= ~KXCJK1013_REG_CTRL1_BIT_WUFE;

	ret = i2c_smbus_write_byte_data(data->client,
					KXCJK1013_REG_CTRL1, ret);
	if (ret < 0) {
		dev_err(&data->client->dev, "Error writing reg_ctrl1\n");
		return ret;
	}

	if (store_mode == OPERATION) {
		ret = kxcjk1013_set_mode(data, OPERATION);
		if (ret < 0)
			return ret;
	}

	return 0;
}

static int kxcjk1013_setup_new_data_interrupt(struct kxcjk1013_data *data,
					      bool status)
{
	int ret;
	enum kxcjk1013_mode store_mode;

	ret = kxcjk1013_get_mode(data, &store_mode);
	if (ret < 0)
		return ret;

	/* This is requirement by spec to change state to STANDBY */
	ret = kxcjk1013_set_mode(data, STANDBY);
	if (ret < 0)
		return ret;

	ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_CTRL1);
	if (ret < 0) {
		dev_err(&data->client->dev, "Error reading reg_int_ctrl1\n");
		return ret;
	}

	if (status)
		ret |= KXCJK1013_REG_INT_REG1_BIT_IEN;
	else
		ret &= ~KXCJK1013_REG_INT_REG1_BIT_IEN;

	ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_INT_CTRL1,
					ret);
	if (ret < 0) {
		dev_err(&data->client->dev, "Error writing reg_int_ctrl1\n");
		return ret;
	}

	ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1);
	if (ret < 0) {
		dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
		return ret;
	}

	if (status)
		ret |= KXCJK1013_REG_CTRL1_BIT_DRDY;
	else
		ret &= ~KXCJK1013_REG_CTRL1_BIT_DRDY;

	ret = i2c_smbus_write_byte_data(data->client,
					KXCJK1013_REG_CTRL1, ret);
	if (ret < 0) {
		dev_err(&data->client->dev, "Error writing reg_ctrl1\n");
		return ret;
	}

	if (store_mode == OPERATION) {
		ret = kxcjk1013_set_mode(data, OPERATION);
		if (ret < 0)
			return ret;
	}

	return 0;
}

static int kxcjk1013_convert_freq_to_bit(int val, int val2)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(samp_freq_table); ++i) {
		if (samp_freq_table[i].val == val &&
			samp_freq_table[i].val2 == val2) {
			return samp_freq_table[i].odr_bits;
		}
	}

	return -EINVAL;
}

static int kxcjk1013_convert_wake_odr_to_bit(int val, int val2)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(wake_odr_data_rate_table); ++i) {
		if (wake_odr_data_rate_table[i].val == val &&
			wake_odr_data_rate_table[i].val2 == val2) {
			return wake_odr_data_rate_table[i].odr_bits;
		}
	}

	return -EINVAL;
}

static int kxcjk1013_set_odr(struct kxcjk1013_data *data, int val, int val2)
{
	int ret;
	int odr_bits;
	enum kxcjk1013_mode store_mode;

	ret = kxcjk1013_get_mode(data, &store_mode);
	if (ret < 0)
		return ret;

	odr_bits = kxcjk1013_convert_freq_to_bit(val, val2);
	if (odr_bits < 0)
		return odr_bits;

	/* To change ODR, the chip must be set to STANDBY as per spec */
	ret = kxcjk1013_set_mode(data, STANDBY);
	if (ret < 0)
		return ret;

	ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_DATA_CTRL,
					odr_bits);
	if (ret < 0) {
		dev_err(&data->client->dev, "Error writing data_ctrl\n");
		return ret;
	}

	data->odr_bits = odr_bits;

	odr_bits = kxcjk1013_convert_wake_odr_to_bit(val, val2);
	if (odr_bits < 0)
		return odr_bits;

	ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_CTRL2,
					odr_bits);
	if (ret < 0) {
		dev_err(&data->client->dev, "Error writing reg_ctrl2\n");
		return ret;
	}

	if (store_mode == OPERATION) {
		ret = kxcjk1013_set_mode(data, OPERATION);
		if (ret < 0)
			return ret;
	}

	return 0;
}

static int kxcjk1013_get_odr(struct kxcjk1013_data *data, int *val, int *val2)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(samp_freq_table); ++i) {
		if (samp_freq_table[i].odr_bits == data->odr_bits) {
			*val = samp_freq_table[i].val;
			*val2 = samp_freq_table[i].val2;
			return IIO_VAL_INT_PLUS_MICRO;
		}
	}

	return -EINVAL;
}

static int kxcjk1013_get_acc_reg(struct kxcjk1013_data *data, int axis)
{
	u8 reg = KXCJK1013_REG_XOUT_L + axis * 2;
	int ret;

	ret = i2c_smbus_read_word_data(data->client, reg);
	if (ret < 0) {
		dev_err(&data->client->dev,
			"failed to read accel_%c registers\n", 'x' + axis);
		return ret;
	}

	return ret;
}

static int kxcjk1013_set_scale(struct kxcjk1013_data *data, int val)
{
	int ret, i;
	enum kxcjk1013_mode store_mode;


	for (i = 0; i < ARRAY_SIZE(KXCJK1013_scale_table); ++i) {
		if (KXCJK1013_scale_table[i].scale == val) {

			ret = kxcjk1013_get_mode(data, &store_mode);
			if (ret < 0)
				return ret;

			ret = kxcjk1013_set_mode(data, STANDBY);
			if (ret < 0)
				return ret;

			ret = kxcjk1013_set_range(data, i);
			if (ret < 0)
				return ret;

			if (store_mode == OPERATION) {
				ret = kxcjk1013_set_mode(data, OPERATION);
				if (ret)
					return ret;
			}

			return 0;
		}
	}

	return -EINVAL;
}

static int kxcjk1013_read_raw(struct iio_dev *indio_dev,
			      struct iio_chan_spec const *chan, int *val,
			      int *val2, long mask)
{
	struct kxcjk1013_data *data = iio_priv(indio_dev);
	int ret;

	switch (mask) {
	case IIO_CHAN_INFO_RAW:
		mutex_lock(&data->mutex);
		if (iio_buffer_enabled(indio_dev))
			ret = -EBUSY;
		else {
			ret = kxcjk1013_set_power_state(data, true);
			if (ret < 0) {
				mutex_unlock(&data->mutex);
				return ret;
			}
			ret = kxcjk1013_get_acc_reg(data, chan->scan_index);
			if (ret < 0) {
				kxcjk1013_set_power_state(data, false);
				mutex_unlock(&data->mutex);
				return ret;
			}
			*val = sign_extend32(ret >> 4, 11);
			ret = kxcjk1013_set_power_state(data, false);
		}
		mutex_unlock(&data->mutex);

		if (ret < 0)
			return ret;

		return IIO_VAL_INT;

	case IIO_CHAN_INFO_SCALE:
		*val = 0;
		*val2 = KXCJK1013_scale_table[data->range].scale;
		return IIO_VAL_INT_PLUS_MICRO;

	case IIO_CHAN_INFO_SAMP_FREQ:
		mutex_lock(&data->mutex);
		ret = kxcjk1013_get_odr(data, val, val2);
		mutex_unlock(&data->mutex);
		return ret;

	default:
		return -EINVAL;
	}
}

static int kxcjk1013_write_raw(struct iio_dev *indio_dev,
			       struct iio_chan_spec const *chan, int val,
			       int val2, long mask)
{
	struct kxcjk1013_data *data = iio_priv(indio_dev);
	int ret;

	switch (mask) {
	case IIO_CHAN_INFO_SAMP_FREQ:
		mutex_lock(&data->mutex);
		ret = kxcjk1013_set_odr(data, val, val2);
		mutex_unlock(&data->mutex);
		break;
	case IIO_CHAN_INFO_SCALE:
		if (val)
			return -EINVAL;

		mutex_lock(&data->mutex);
		ret = kxcjk1013_set_scale(data, val2);
		mutex_unlock(&data->mutex);
		break;
	default:
		ret = -EINVAL;
	}

	return ret;
}

static int kxcjk1013_read_event(struct iio_dev *indio_dev,
				   const struct iio_chan_spec *chan,
				   enum iio_event_type type,
				   enum iio_event_direction dir,
				   enum iio_event_info info,
				   int *val, int *val2)
{
	struct kxcjk1013_data *data = iio_priv(indio_dev);

	*val2 = 0;
	switch (info) {
	case IIO_EV_INFO_VALUE:
		*val = data->wake_thres;
		break;
	case IIO_EV_INFO_PERIOD:
		*val = data->wake_dur;
		break;
	default:
		return -EINVAL;
	}

	return IIO_VAL_INT;
}

static int kxcjk1013_write_event(struct iio_dev *indio_dev,
				    const struct iio_chan_spec *chan,
				    enum iio_event_type type,
				    enum iio_event_direction dir,
				    enum iio_event_info info,
				    int val, int val2)
{
	struct kxcjk1013_data *data = iio_priv(indio_dev);

	if (data->ev_enable_state)
		return -EBUSY;

	switch (info) {
	case IIO_EV_INFO_VALUE:
		data->wake_thres = val;
		break;
	case IIO_EV_INFO_PERIOD:
		data->wake_dur = val;
		break;
	default:
		return -EINVAL;
	}

	return 0;
}

static int kxcjk1013_read_event_config(struct iio_dev *indio_dev,
					  const struct iio_chan_spec *chan,
					  enum iio_event_type type,
					  enum iio_event_direction dir)
{

	struct kxcjk1013_data *data = iio_priv(indio_dev);

	return data->ev_enable_state;
}

static int kxcjk1013_write_event_config(struct iio_dev *indio_dev,
					   const struct iio_chan_spec *chan,
					   enum iio_event_type type,
					   enum iio_event_direction dir,
					   int state)
{
	struct kxcjk1013_data *data = iio_priv(indio_dev);
	int ret;

	if (state && data->ev_enable_state)
		return 0;

	mutex_lock(&data->mutex);

	if (!state && data->motion_trigger_on) {
		data->ev_enable_state = 0;
		mutex_unlock(&data->mutex);
		return 0;
	}

	/*
	 * We will expect the enable and disable to do operation in
	 * in reverse order. This will happen here anyway as our
	 * resume operation uses sync mode runtime pm calls, the
	 * suspend operation will be delayed by autosuspend delay
	 * So the disable operation will still happen in reverse of
	 * enable operation. When runtime pm is disabled the mode
	 * is always on so sequence doesn't matter
	 */
	ret = kxcjk1013_set_power_state(data, state);
	if (ret < 0) {
		mutex_unlock(&data->mutex);
		return ret;
	}

	ret =  kxcjk1013_setup_any_motion_interrupt(data, state);
	if (ret < 0) {
		mutex_unlock(&data->mutex);
		return ret;
	}

	data->ev_enable_state = state;
	mutex_unlock(&data->mutex);

	return 0;
}

static int kxcjk1013_validate_trigger(struct iio_dev *indio_dev,
				      struct iio_trigger *trig)
{
	struct kxcjk1013_data *data = iio_priv(indio_dev);

	if (data->dready_trig != trig && data->motion_trig != trig)
		return -EINVAL;

	return 0;
}

static IIO_CONST_ATTR_SAMP_FREQ_AVAIL(
	"0.781000 1.563000 3.125000 6.250000 12.500000 25 50 100 200 400 800 1600");

static IIO_CONST_ATTR(in_accel_scale_available, "0.009582 0.019163 0.038326");

static struct attribute *kxcjk1013_attributes[] = {
	&iio_const_attr_sampling_frequency_available.dev_attr.attr,
	&iio_const_attr_in_accel_scale_available.dev_attr.attr,
	NULL,
};

static const struct attribute_group kxcjk1013_attrs_group = {
	.attrs = kxcjk1013_attributes,
};

static const struct iio_event_spec kxcjk1013_event = {
		.type = IIO_EV_TYPE_THRESH,
		.dir = IIO_EV_DIR_RISING | IIO_EV_DIR_FALLING,
		.mask_separate = BIT(IIO_EV_INFO_VALUE) |
				 BIT(IIO_EV_INFO_ENABLE) |
				 BIT(IIO_EV_INFO_PERIOD)
};

#define KXCJK1013_CHANNEL(_axis) {					\
	.type = IIO_ACCEL,						\
	.modified = 1,							\
	.channel2 = IIO_MOD_##_axis,					\
	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),			\
	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) |		\
				BIT(IIO_CHAN_INFO_SAMP_FREQ),		\
	.scan_index = AXIS_##_axis,					\
	.scan_type = {							\
		.sign = 's',						\
		.realbits = 12,						\
		.storagebits = 16,					\
		.shift = 4,						\
		.endianness = IIO_CPU,					\
	},								\
	.event_spec = &kxcjk1013_event,				\
	.num_event_specs = 1						\
}

static const struct iio_chan_spec kxcjk1013_channels[] = {
	KXCJK1013_CHANNEL(X),
	KXCJK1013_CHANNEL(Y),
	KXCJK1013_CHANNEL(Z),
	IIO_CHAN_SOFT_TIMESTAMP(3),
};

static const struct iio_info kxcjk1013_info = {
	.attrs			= &kxcjk1013_attrs_group,
	.read_raw		= kxcjk1013_read_raw,
	.write_raw		= kxcjk1013_write_raw,
	.read_event_value	= kxcjk1013_read_event,
	.write_event_value	= kxcjk1013_write_event,
	.write_event_config	= kxcjk1013_write_event_config,
	.read_event_config	= kxcjk1013_read_event_config,
	.validate_trigger	= kxcjk1013_validate_trigger,
	.driver_module		= THIS_MODULE,
};

static irqreturn_t kxcjk1013_trigger_handler(int irq, void *p)
{
	struct iio_poll_func *pf = p;
	struct iio_dev *indio_dev = pf->indio_dev;
	struct kxcjk1013_data *data = iio_priv(indio_dev);
	int bit, ret, i = 0;

	mutex_lock(&data->mutex);

	for_each_set_bit(bit, indio_dev->buffer->scan_mask,
			 indio_dev->masklength) {
		ret = kxcjk1013_get_acc_reg(data, bit);
		if (ret < 0) {
			mutex_unlock(&data->mutex);
			goto err;
		}
		data->buffer[i++] = ret;
	}
	mutex_unlock(&data->mutex);

	iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
					   data->timestamp);
err:
	iio_trigger_notify_done(indio_dev->trig);

	return IRQ_HANDLED;
}

static int kxcjk1013_trig_try_reen(struct iio_trigger *trig)
{
	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
	struct kxcjk1013_data *data = iio_priv(indio_dev);
	int ret;

	ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_REL);
	if (ret < 0) {
		dev_err(&data->client->dev, "Error reading reg_int_rel\n");
		return ret;
	}

	return 0;
}

static int kxcjk1013_data_rdy_trigger_set_state(struct iio_trigger *trig,
						bool state)
{
	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
	struct kxcjk1013_data *data = iio_priv(indio_dev);
	int ret;

	mutex_lock(&data->mutex);

	if (!state && data->ev_enable_state && data->motion_trigger_on) {
		data->motion_trigger_on = false;
		mutex_unlock(&data->mutex);
		return 0;
	}

	ret = kxcjk1013_set_power_state(data, state);
	if (ret < 0) {
		mutex_unlock(&data->mutex);
		return ret;
	}
	if (data->motion_trig == trig)
		ret = kxcjk1013_setup_any_motion_interrupt(data, state);
	else
		ret = kxcjk1013_setup_new_data_interrupt(data, state);
	if (ret < 0) {
		mutex_unlock(&data->mutex);
		return ret;
	}
	if (data->motion_trig == trig)
		data->motion_trigger_on = state;
	else
		data->dready_trigger_on = state;

	mutex_unlock(&data->mutex);

	return 0;
}

static const struct iio_trigger_ops kxcjk1013_trigger_ops = {
	.set_trigger_state = kxcjk1013_data_rdy_trigger_set_state,
	.try_reenable = kxcjk1013_trig_try_reen,
	.owner = THIS_MODULE,
};

static irqreturn_t kxcjk1013_event_handler(int irq, void *private)
{
	struct iio_dev *indio_dev = private;
	struct kxcjk1013_data *data = iio_priv(indio_dev);
	int ret;

	ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_SRC1);
	if (ret < 0) {
		dev_err(&data->client->dev, "Error reading reg_int_src1\n");
		goto ack_intr;
	}

	if (ret & 0x02) {
		ret = i2c_smbus_read_byte_data(data->client,
					       KXCJK1013_REG_INT_SRC2);
		if (ret < 0) {
			dev_err(&data->client->dev,
				"Error reading reg_int_src2\n");
			goto ack_intr;
		}

		if (ret & KXCJK1013_REG_INT_SRC2_BIT_XN)
			iio_push_event(indio_dev,
				       IIO_MOD_EVENT_CODE(IIO_ACCEL,
				       0,
				       IIO_MOD_X,
				       IIO_EV_TYPE_THRESH,
				       IIO_EV_DIR_FALLING),
				       data->timestamp);
		if (ret & KXCJK1013_REG_INT_SRC2_BIT_XP)
			iio_push_event(indio_dev,
				       IIO_MOD_EVENT_CODE(IIO_ACCEL,
				       0,
				       IIO_MOD_X,
				       IIO_EV_TYPE_THRESH,
				       IIO_EV_DIR_RISING),
				       data->timestamp);


		if (ret & KXCJK1013_REG_INT_SRC2_BIT_YN)
			iio_push_event(indio_dev,
				       IIO_MOD_EVENT_CODE(IIO_ACCEL,
				       0,
				       IIO_MOD_Y,
				       IIO_EV_TYPE_THRESH,
				       IIO_EV_DIR_FALLING),
				       data->timestamp);
		if (ret & KXCJK1013_REG_INT_SRC2_BIT_YP)
			iio_push_event(indio_dev,
				       IIO_MOD_EVENT_CODE(IIO_ACCEL,
				       0,
				       IIO_MOD_Y,
				       IIO_EV_TYPE_THRESH,
				       IIO_EV_DIR_RISING),
				       data->timestamp);

		if (ret & KXCJK1013_REG_INT_SRC2_BIT_ZN)
			iio_push_event(indio_dev,
				       IIO_MOD_EVENT_CODE(IIO_ACCEL,
				       0,
				       IIO_MOD_Z,
				       IIO_EV_TYPE_THRESH,
				       IIO_EV_DIR_FALLING),
				       data->timestamp);
		if (ret & KXCJK1013_REG_INT_SRC2_BIT_ZP)
			iio_push_event(indio_dev,
				       IIO_MOD_EVENT_CODE(IIO_ACCEL,
				       0,
				       IIO_MOD_Z,
				       IIO_EV_TYPE_THRESH,
				       IIO_EV_DIR_RISING),
				       data->timestamp);
	}

ack_intr:
	if (data->dready_trigger_on)
		return IRQ_HANDLED;

	ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_REL);
	if (ret < 0)
		dev_err(&data->client->dev, "Error reading reg_int_rel\n");

	return IRQ_HANDLED;
}

static irqreturn_t kxcjk1013_data_rdy_trig_poll(int irq, void *private)
{
	struct iio_dev *indio_dev = private;
	struct kxcjk1013_data *data = iio_priv(indio_dev);

	data->timestamp = iio_get_time_ns();

	if (data->dready_trigger_on)
		iio_trigger_poll(data->dready_trig);
	else if (data->motion_trigger_on)
		iio_trigger_poll(data->motion_trig);

	if (data->ev_enable_state)
		return IRQ_WAKE_THREAD;
	else
		return IRQ_HANDLED;
}

static int kxcjk1013_acpi_gpio_probe(struct i2c_client *client,
				     struct kxcjk1013_data *data)
{
	const struct acpi_device_id *id;
	struct device *dev;
	struct gpio_desc *gpio;
	int ret;

	if (!client)
		return -EINVAL;

	dev = &client->dev;
	if (!ACPI_HANDLE(dev))
		return -ENODEV;

	id = acpi_match_device(dev->driver->acpi_match_table, dev);
	if (!id)
		return -ENODEV;

	/* data ready gpio interrupt pin */
	gpio = devm_gpiod_get_index(dev, "kxcjk1013_int", 0);
	if (IS_ERR(gpio)) {
		dev_err(dev, "acpi gpio get index failed\n");
		return PTR_ERR(gpio);
	}

	ret = gpiod_direction_input(gpio);
	if (ret)
		return ret;

	ret = gpiod_to_irq(gpio);

	dev_dbg(dev, "GPIO resource, no:%d irq:%d\n", desc_to_gpio(gpio), ret);

	return ret;
}

static int kxcjk1013_probe(struct i2c_client *client,
			   const struct i2c_device_id *id)
{
	struct kxcjk1013_data *data;
	struct iio_dev *indio_dev;
	struct kxcjk_1013_platform_data *pdata;
	int ret;

	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
	if (!indio_dev)
		return -ENOMEM;

	data = iio_priv(indio_dev);
	i2c_set_clientdata(client, indio_dev);
	data->client = client;

	pdata = dev_get_platdata(&client->dev);
	if (pdata)
		data->active_high_intr = pdata->active_high_intr;
	else
		data->active_high_intr = true; /* default polarity */

	ret = kxcjk1013_chip_init(data);
	if (ret < 0)
		return ret;

	mutex_init(&data->mutex);

	indio_dev->dev.parent = &client->dev;
	indio_dev->channels = kxcjk1013_channels;
	indio_dev->num_channels = ARRAY_SIZE(kxcjk1013_channels);
	indio_dev->name = KXCJK1013_DRV_NAME;
	indio_dev->modes = INDIO_DIRECT_MODE;
	indio_dev->info = &kxcjk1013_info;

	if (client->irq < 0)
		client->irq = kxcjk1013_acpi_gpio_probe(client, data);

	if (client->irq >= 0) {
		ret = devm_request_threaded_irq(&client->dev, client->irq,
						kxcjk1013_data_rdy_trig_poll,
						kxcjk1013_event_handler,
						IRQF_TRIGGER_RISING,
						KXCJK1013_IRQ_NAME,
						indio_dev);
		if (ret)
			return ret;

		data->dready_trig = devm_iio_trigger_alloc(&client->dev,
							   "%s-dev%d",
							   indio_dev->name,
							   indio_dev->id);
		if (!data->dready_trig)
			return -ENOMEM;

		data->motion_trig = devm_iio_trigger_alloc(&client->dev,
							  "%s-any-motion-dev%d",
							  indio_dev->name,
							  indio_dev->id);
		if (!data->motion_trig)
			return -ENOMEM;

		data->dready_trig->dev.parent = &client->dev;
		data->dready_trig->ops = &kxcjk1013_trigger_ops;
		iio_trigger_set_drvdata(data->dready_trig, indio_dev);
		indio_dev->trig = data->dready_trig;
		iio_trigger_get(indio_dev->trig);
		ret = iio_trigger_register(data->dready_trig);
		if (ret)
			return ret;

		data->motion_trig->dev.parent = &client->dev;
		data->motion_trig->ops = &kxcjk1013_trigger_ops;
		iio_trigger_set_drvdata(data->motion_trig, indio_dev);
		ret = iio_trigger_register(data->motion_trig);
		if (ret) {
			data->motion_trig = NULL;
			goto err_trigger_unregister;
		}

		ret = iio_triggered_buffer_setup(indio_dev,
						&iio_pollfunc_store_time,
						kxcjk1013_trigger_handler,
						NULL);
		if (ret < 0) {
			dev_err(&client->dev,
					"iio triggered buffer setup failed\n");
			goto err_trigger_unregister;
		}
	}

	ret = iio_device_register(indio_dev);
	if (ret < 0) {
		dev_err(&client->dev, "unable to register iio device\n");
		goto err_buffer_cleanup;
	}

	ret = pm_runtime_set_active(&client->dev);
	if (ret)
		goto err_iio_unregister;

	pm_runtime_enable(&client->dev);
	pm_runtime_set_autosuspend_delay(&client->dev,
					 KXCJK1013_SLEEP_DELAY_MS);
	pm_runtime_use_autosuspend(&client->dev);

	return 0;

err_iio_unregister:
	iio_device_unregister(indio_dev);
err_buffer_cleanup:
	if (data->dready_trig)
		iio_triggered_buffer_cleanup(indio_dev);
err_trigger_unregister:
	if (data->dready_trig)
		iio_trigger_unregister(data->dready_trig);
	if (data->motion_trig)
		iio_trigger_unregister(data->motion_trig);

	return ret;
}

static int kxcjk1013_remove(struct i2c_client *client)
{
	struct iio_dev *indio_dev = i2c_get_clientdata(client);
	struct kxcjk1013_data *data = iio_priv(indio_dev);

	pm_runtime_disable(&client->dev);
	pm_runtime_set_suspended(&client->dev);
	pm_runtime_put_noidle(&client->dev);

	iio_device_unregister(indio_dev);

	if (data->dready_trig) {
		iio_triggered_buffer_cleanup(indio_dev);
		iio_trigger_unregister(data->dready_trig);
		iio_trigger_unregister(data->motion_trig);
	}

	mutex_lock(&data->mutex);
	kxcjk1013_set_mode(data, STANDBY);
	mutex_unlock(&data->mutex);

	return 0;
}

#ifdef CONFIG_PM_SLEEP
static int kxcjk1013_suspend(struct device *dev)
{
	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
	struct kxcjk1013_data *data = iio_priv(indio_dev);
	int ret;

	mutex_lock(&data->mutex);
	ret = kxcjk1013_set_mode(data, STANDBY);
	mutex_unlock(&data->mutex);

	return ret;
}

static int kxcjk1013_resume(struct device *dev)
{
	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
	struct kxcjk1013_data *data = iio_priv(indio_dev);
	int ret = 0;

	mutex_lock(&data->mutex);
	/* Check, if the suspend occured while active */
	if (data->dready_trigger_on || data->motion_trigger_on ||
							data->ev_enable_state)
		ret = kxcjk1013_set_mode(data, OPERATION);
	mutex_unlock(&data->mutex);

	return ret;
}
#endif

#ifdef CONFIG_PM_RUNTIME
static int kxcjk1013_runtime_suspend(struct device *dev)
{
	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
	struct kxcjk1013_data *data = iio_priv(indio_dev);

	return kxcjk1013_set_mode(data, STANDBY);
}

static int kxcjk1013_runtime_resume(struct device *dev)
{
	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
	struct kxcjk1013_data *data = iio_priv(indio_dev);
	int ret;
	int sleep_val;

	ret = kxcjk1013_set_mode(data, OPERATION);
	if (ret < 0)
		return ret;

	sleep_val = kxcjk1013_get_startup_times(data);
	if (sleep_val < 20000)
		usleep_range(sleep_val, 20000);
	else
		msleep_interruptible(sleep_val/1000);

	return 0;
}
#endif

static const struct dev_pm_ops kxcjk1013_pm_ops = {
	SET_SYSTEM_SLEEP_PM_OPS(kxcjk1013_suspend, kxcjk1013_resume)
	SET_RUNTIME_PM_OPS(kxcjk1013_runtime_suspend,
			   kxcjk1013_runtime_resume, NULL)
};

static const struct acpi_device_id kx_acpi_match[] = {
	{"KXCJ1013", 0},
	{"KXCJ1008", 0},
	{ },
};
MODULE_DEVICE_TABLE(acpi, kx_acpi_match);

static const struct i2c_device_id kxcjk1013_id[] = {
	{"kxcjk1013", 0},
	{"kxcj91008", 0},
	{}
};

MODULE_DEVICE_TABLE(i2c, kxcjk1013_id);

static struct i2c_driver kxcjk1013_driver = {
	.driver = {
		.name	= KXCJK1013_DRV_NAME,
		.acpi_match_table = ACPI_PTR(kx_acpi_match),
		.pm	= &kxcjk1013_pm_ops,
	},
	.probe		= kxcjk1013_probe,
	.remove		= kxcjk1013_remove,
	.id_table	= kxcjk1013_id,
};
module_i2c_driver(kxcjk1013_driver);

MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("KXCJK1013 accelerometer driver");