aboutsummaryrefslogtreecommitdiff
path: root/drivers/hwmon/lm85.c
blob: 3894c408fda3cedc1230742cc5c0a9a653227cd5 (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
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
/*
 * lm85.c - Part of lm_sensors, Linux kernel modules for hardware
 *	    monitoring
 * Copyright (c) 1998, 1999  Frodo Looijaard <frodol@dds.nl>
 * Copyright (c) 2002, 2003  Philip Pokorny <ppokorny@penguincomputing.com>
 * Copyright (c) 2003        Margit Schubert-While <margitsw@t-online.de>
 * Copyright (c) 2004        Justin Thiessen <jthiessen@penguincomputing.com>
 * Copyright (C) 2007--2009  Jean Delvare <khali@linux-fr.org>
 *
 * Chip details at	      <http://www.national.com/ds/LM/LM85.pdf>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/jiffies.h>
#include <linux/i2c.h>
#include <linux/hwmon.h>
#include <linux/hwmon-vid.h>
#include <linux/hwmon-sysfs.h>
#include <linux/err.h>
#include <linux/mutex.h>

/* Addresses to scan */
static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };

enum chips {
	any_chip, lm85b, lm85c,
	adm1027, adt7463, adt7468,
	emc6d100, emc6d102, emc6d103, emc6d103s
};

/* The LM85 registers */

#define LM85_REG_IN(nr)			(0x20 + (nr))
#define LM85_REG_IN_MIN(nr)		(0x44 + (nr) * 2)
#define LM85_REG_IN_MAX(nr)		(0x45 + (nr) * 2)

#define LM85_REG_TEMP(nr)		(0x25 + (nr))
#define LM85_REG_TEMP_MIN(nr)		(0x4e + (nr) * 2)
#define LM85_REG_TEMP_MAX(nr)		(0x4f + (nr) * 2)

/* Fan speeds are LSB, MSB (2 bytes) */
#define LM85_REG_FAN(nr)		(0x28 + (nr) * 2)
#define LM85_REG_FAN_MIN(nr)		(0x54 + (nr) * 2)

#define LM85_REG_PWM(nr)		(0x30 + (nr))

#define LM85_REG_COMPANY		0x3e
#define LM85_REG_VERSTEP		0x3f

#define ADT7468_REG_CFG5		0x7c
#define ADT7468_OFF64			(1 << 0)
#define ADT7468_HFPWM			(1 << 1)
#define IS_ADT7468_OFF64(data)		\
	((data)->type == adt7468 && !((data)->cfg5 & ADT7468_OFF64))
#define IS_ADT7468_HFPWM(data)		\
	((data)->type == adt7468 && !((data)->cfg5 & ADT7468_HFPWM))

/* These are the recognized values for the above regs */
#define LM85_COMPANY_NATIONAL		0x01
#define LM85_COMPANY_ANALOG_DEV		0x41
#define LM85_COMPANY_SMSC		0x5c
#define LM85_VERSTEP_VMASK              0xf0
#define LM85_VERSTEP_GENERIC		0x60
#define LM85_VERSTEP_GENERIC2		0x70
#define LM85_VERSTEP_LM85C		0x60
#define LM85_VERSTEP_LM85B		0x62
#define LM85_VERSTEP_LM96000_1		0x68
#define LM85_VERSTEP_LM96000_2		0x69
#define LM85_VERSTEP_ADM1027		0x60
#define LM85_VERSTEP_ADT7463		0x62
#define LM85_VERSTEP_ADT7463C		0x6A
#define LM85_VERSTEP_ADT7468_1		0x71
#define LM85_VERSTEP_ADT7468_2		0x72
#define LM85_VERSTEP_EMC6D100_A0        0x60
#define LM85_VERSTEP_EMC6D100_A1        0x61
#define LM85_VERSTEP_EMC6D102		0x65
#define LM85_VERSTEP_EMC6D103_A0	0x68
#define LM85_VERSTEP_EMC6D103_A1	0x69
#define LM85_VERSTEP_EMC6D103S		0x6A	/* Also known as EMC6D103:A2 */

#define LM85_REG_CONFIG			0x40

#define LM85_REG_ALARM1			0x41
#define LM85_REG_ALARM2			0x42

#define LM85_REG_VID			0x43

/* Automated FAN control */
#define LM85_REG_AFAN_CONFIG(nr)	(0x5c + (nr))
#define LM85_REG_AFAN_RANGE(nr)		(0x5f + (nr))
#define LM85_REG_AFAN_SPIKE1		0x62
#define LM85_REG_AFAN_MINPWM(nr)	(0x64 + (nr))
#define LM85_REG_AFAN_LIMIT(nr)		(0x67 + (nr))
#define LM85_REG_AFAN_CRITICAL(nr)	(0x6a + (nr))
#define LM85_REG_AFAN_HYST1		0x6d
#define LM85_REG_AFAN_HYST2		0x6e

#define ADM1027_REG_EXTEND_ADC1		0x76
#define ADM1027_REG_EXTEND_ADC2		0x77

#define EMC6D100_REG_ALARM3             0x7d
/* IN5, IN6 and IN7 */
#define EMC6D100_REG_IN(nr)             (0x70 + ((nr) - 5))
#define EMC6D100_REG_IN_MIN(nr)         (0x73 + ((nr) - 5) * 2)
#define EMC6D100_REG_IN_MAX(nr)         (0x74 + ((nr) - 5) * 2)
#define EMC6D102_REG_EXTEND_ADC1	0x85
#define EMC6D102_REG_EXTEND_ADC2	0x86
#define EMC6D102_REG_EXTEND_ADC3	0x87
#define EMC6D102_REG_EXTEND_ADC4	0x88


/*
 * Conversions. Rounding and limit checking is only done on the TO_REG
 * variants. Note that you should be a bit careful with which arguments
 * these macros are called: arguments may be evaluated more than once.
 */

/* IN are scaled according to built-in resistors */
static const int lm85_scaling[] = {  /* .001 Volts */
	2500, 2250, 3300, 5000, 12000,
	3300, 1500, 1800 /*EMC6D100*/
};
#define SCALE(val, from, to)	(((val) * (to) + ((from) / 2)) / (from))

#define INS_TO_REG(n, val)	\
		clamp_val(SCALE(val, lm85_scaling[n], 192), 0, 255)

#define INSEXT_FROM_REG(n, val, ext)	\
		SCALE(((val) << 4) + (ext), 192 << 4, lm85_scaling[n])

#define INS_FROM_REG(n, val)	SCALE((val), 192, lm85_scaling[n])

/* FAN speed is measured using 90kHz clock */
static inline u16 FAN_TO_REG(unsigned long val)
{
	if (!val)
		return 0xffff;
	return clamp_val(5400000 / val, 1, 0xfffe);
}
#define FAN_FROM_REG(val)	((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
				 5400000 / (val))

/* Temperature is reported in .001 degC increments */
#define TEMP_TO_REG(val)	\
		clamp_val(SCALE(val, 1000, 1), -127, 127)
#define TEMPEXT_FROM_REG(val, ext)	\
		SCALE(((val) << 4) + (ext), 16, 1000)
#define TEMP_FROM_REG(val)	((val) * 1000)

#define PWM_TO_REG(val)			clamp_val(val, 0, 255)
#define PWM_FROM_REG(val)		(val)


/*
 * ZONEs have the following parameters:
 *    Limit (low) temp,           1. degC
 *    Hysteresis (below limit),   1. degC (0-15)
 *    Range of speed control,     .1 degC (2-80)
 *    Critical (high) temp,       1. degC
 *
 * FAN PWMs have the following parameters:
 *    Reference Zone,                 1, 2, 3, etc.
 *    Spinup time,                    .05 sec
 *    PWM value at limit/low temp,    1 count
 *    PWM Frequency,                  1. Hz
 *    PWM is Min or OFF below limit,  flag
 *    Invert PWM output,              flag
 *
 * Some chips filter the temp, others the fan.
 *    Filter constant (or disabled)   .1 seconds
 */

/* These are the zone temperature range encodings in .001 degree C */
static const int lm85_range_map[] = {
	2000, 2500, 3300, 4000, 5000, 6600, 8000, 10000,
	13300, 16000, 20000, 26600, 32000, 40000, 53300, 80000
};

static int RANGE_TO_REG(int range)
{
	int i;

	/* Find the closest match */
	for (i = 0; i < 15; ++i) {
		if (range <= (lm85_range_map[i] + lm85_range_map[i + 1]) / 2)
			break;
	}

	return i;
}
#define RANGE_FROM_REG(val)	lm85_range_map[(val) & 0x0f]

/* These are the PWM frequency encodings */
static const int lm85_freq_map[8] = { /* 1 Hz */
	10, 15, 23, 30, 38, 47, 61, 94
};
static const int adm1027_freq_map[8] = { /* 1 Hz */
	11, 15, 22, 29, 35, 44, 59, 88
};

static int FREQ_TO_REG(const int *map, int freq)
{
	int i;

	/* Find the closest match */
	for (i = 0; i < 7; ++i)
		if (freq <= (map[i] + map[i + 1]) / 2)
			break;
	return i;
}

static int FREQ_FROM_REG(const int *map, u8 reg)
{
	return map[reg & 0x07];
}

/*
 * Since we can't use strings, I'm abusing these numbers
 *   to stand in for the following meanings:
 *      1 -- PWM responds to Zone 1
 *      2 -- PWM responds to Zone 2
 *      3 -- PWM responds to Zone 3
 *     23 -- PWM responds to the higher temp of Zone 2 or 3
 *    123 -- PWM responds to highest of Zone 1, 2, or 3
 *      0 -- PWM is always at 0% (ie, off)
 *     -1 -- PWM is always at 100%
 *     -2 -- PWM responds to manual control
 */

static const int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 };
#define ZONE_FROM_REG(val)	lm85_zone_map[(val) >> 5]

static int ZONE_TO_REG(int zone)
{
	int i;

	for (i = 0; i <= 7; ++i)
		if (zone == lm85_zone_map[i])
			break;
	if (i > 7)   /* Not found. */
		i = 3;  /* Always 100% */
	return i << 5;
}

#define HYST_TO_REG(val)	clamp_val(((val) + 500) / 1000, 0, 15)
#define HYST_FROM_REG(val)	((val) * 1000)

/*
 * Chip sampling rates
 *
 * Some sensors are not updated more frequently than once per second
 *    so it doesn't make sense to read them more often than that.
 *    We cache the results and return the saved data if the driver
 *    is called again before a second has elapsed.
 *
 * Also, there is significant configuration data for this chip
 *    given the automatic PWM fan control that is possible.  There
 *    are about 47 bytes of config data to only 22 bytes of actual
 *    readings.  So, we keep the config data up to date in the cache
 *    when it is written and only sample it once every 1 *minute*
 */
#define LM85_DATA_INTERVAL  (HZ + HZ / 2)
#define LM85_CONFIG_INTERVAL  (1 * 60 * HZ)

/*
 * LM85 can automatically adjust fan speeds based on temperature
 * This structure encapsulates an entire Zone config.  There are
 * three zones (one for each temperature input) on the lm85
 */
struct lm85_zone {
	s8 limit;	/* Low temp limit */
	u8 hyst;	/* Low limit hysteresis. (0-15) */
	u8 range;	/* Temp range, encoded */
	s8 critical;	/* "All fans ON" temp limit */
	u8 max_desired; /*
			 * Actual "max" temperature specified.  Preserved
			 * to prevent "drift" as other autofan control
			 * values change.
			 */
};

struct lm85_autofan {
	u8 config;	/* Register value */
	u8 min_pwm;	/* Minimum PWM value, encoded */
	u8 min_off;	/* Min PWM or OFF below "limit", flag */
};

/*
 * For each registered chip, we need to keep some data in memory.
 * The structure is dynamically allocated.
 */
struct lm85_data {
	struct device *hwmon_dev;
	const int *freq_map;
	enum chips type;

	bool has_vid5;	/* true if VID5 is configured for ADT7463 or ADT7468 */

	struct mutex update_lock;
	int valid;		/* !=0 if following fields are valid */
	unsigned long last_reading;	/* In jiffies */
	unsigned long last_config;	/* In jiffies */

	u8 in[8];		/* Register value */
	u8 in_max[8];		/* Register value */
	u8 in_min[8];		/* Register value */
	s8 temp[3];		/* Register value */
	s8 temp_min[3];		/* Register value */
	s8 temp_max[3];		/* Register value */
	u16 fan[4];		/* Register value */
	u16 fan_min[4];		/* Register value */
	u8 pwm[3];		/* Register value */
	u8 pwm_freq[3];		/* Register encoding */
	u8 temp_ext[3];		/* Decoded values */
	u8 in_ext[8];		/* Decoded values */
	u8 vid;			/* Register value */
	u8 vrm;			/* VRM version */
	u32 alarms;		/* Register encoding, combined */
	u8 cfg5;		/* Config Register 5 on ADT7468 */
	struct lm85_autofan autofan[3];
	struct lm85_zone zone[3];
};

static int lm85_detect(struct i2c_client *client, struct i2c_board_info *info);
static int lm85_probe(struct i2c_client *client,
		      const struct i2c_device_id *id);
static int lm85_remove(struct i2c_client *client);

static int lm85_read_value(struct i2c_client *client, u8 reg);
static void lm85_write_value(struct i2c_client *client, u8 reg, int value);
static struct lm85_data *lm85_update_device(struct device *dev);


static const struct i2c_device_id lm85_id[] = {
	{ "adm1027", adm1027 },
	{ "adt7463", adt7463 },
	{ "adt7468", adt7468 },
	{ "lm85", any_chip },
	{ "lm85b", lm85b },
	{ "lm85c", lm85c },
	{ "emc6d100", emc6d100 },
	{ "emc6d101", emc6d100 },
	{ "emc6d102", emc6d102 },
	{ "emc6d103", emc6d103 },
	{ "emc6d103s", emc6d103s },
	{ }
};
MODULE_DEVICE_TABLE(i2c, lm85_id);

static struct i2c_driver lm85_driver = {
	.class		= I2C_CLASS_HWMON,
	.driver = {
		.name   = "lm85",
	},
	.probe		= lm85_probe,
	.remove		= lm85_remove,
	.id_table	= lm85_id,
	.detect		= lm85_detect,
	.address_list	= normal_i2c,
};


/* 4 Fans */
static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
		char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct lm85_data *data = lm85_update_device(dev);
	return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr]));
}

static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
		char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct lm85_data *data = lm85_update_device(dev);
	return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr]));
}

static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
		const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct lm85_data *data = i2c_get_clientdata(client);
	unsigned long val;
	int err;

	err = kstrtoul(buf, 10, &val);
	if (err)
		return err;

	mutex_lock(&data->update_lock);
	data->fan_min[nr] = FAN_TO_REG(val);
	lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]);
	mutex_unlock(&data->update_lock);
	return count;
}

#define show_fan_offset(offset)						\
static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO,			\
		show_fan, NULL, offset - 1);				\
static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR,		\
		show_fan_min, set_fan_min, offset - 1)

show_fan_offset(1);
show_fan_offset(2);
show_fan_offset(3);
show_fan_offset(4);

/* vid, vrm, alarms */

static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
		char *buf)
{
	struct lm85_data *data = lm85_update_device(dev);
	int vid;

	if (data->has_vid5) {
		/* 6-pin VID (VRM 10) */
		vid = vid_from_reg(data->vid & 0x3f, data->vrm);
	} else {
		/* 5-pin VID (VRM 9) */
		vid = vid_from_reg(data->vid & 0x1f, data->vrm);
	}

	return sprintf(buf, "%d\n", vid);
}

static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);

static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
		char *buf)
{
	struct lm85_data *data = dev_get_drvdata(dev);
	return sprintf(buf, "%ld\n", (long) data->vrm);
}

static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
		const char *buf, size_t count)
{
	struct lm85_data *data = dev_get_drvdata(dev);
	unsigned long val;
	int err;

	err = kstrtoul(buf, 10, &val);
	if (err)
		return err;

	data->vrm = val;
	return count;
}

static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);

static ssize_t show_alarms_reg(struct device *dev, struct device_attribute
		*attr, char *buf)
{
	struct lm85_data *data = lm85_update_device(dev);
	return sprintf(buf, "%u\n", data->alarms);
}

static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);

static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
		char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct lm85_data *data = lm85_update_device(dev);
	return sprintf(buf, "%u\n", (data->alarms >> nr) & 1);
}

static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8);
static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 18);
static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 16);
static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 17);
static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4);
static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_alarm, NULL, 14);
static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5);
static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 6);
static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15);
static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 10);
static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 11);
static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 12);
static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 13);

/* pwm */

static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
		char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct lm85_data *data = lm85_update_device(dev);
	return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr]));
}

static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
		const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct lm85_data *data = i2c_get_clientdata(client);
	unsigned long val;
	int err;

	err = kstrtoul(buf, 10, &val);
	if (err)
		return err;

	mutex_lock(&data->update_lock);
	data->pwm[nr] = PWM_TO_REG(val);
	lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]);
	mutex_unlock(&data->update_lock);
	return count;
}

static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
		*attr, char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct lm85_data *data = lm85_update_device(dev);
	int pwm_zone, enable;

	pwm_zone = ZONE_FROM_REG(data->autofan[nr].config);
	switch (pwm_zone) {
	case -1:	/* PWM is always at 100% */
		enable = 0;
		break;
	case 0:		/* PWM is always at 0% */
	case -2:	/* PWM responds to manual control */
		enable = 1;
		break;
	default:	/* PWM in automatic mode */
		enable = 2;
	}
	return sprintf(buf, "%d\n", enable);
}

static ssize_t set_pwm_enable(struct device *dev, struct device_attribute
		*attr, const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct lm85_data *data = i2c_get_clientdata(client);
	u8 config;
	unsigned long val;
	int err;

	err = kstrtoul(buf, 10, &val);
	if (err)
		return err;

	switch (val) {
	case 0:
		config = 3;
		break;
	case 1:
		config = 7;
		break;
	case 2:
		/*
		 * Here we have to choose arbitrarily one of the 5 possible
		 * configurations; I go for the safest
		 */
		config = 6;
		break;
	default:
		return -EINVAL;
	}

	mutex_lock(&data->update_lock);
	data->autofan[nr].config = lm85_read_value(client,
		LM85_REG_AFAN_CONFIG(nr));
	data->autofan[nr].config = (data->autofan[nr].config & ~0xe0)
		| (config << 5);
	lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
		data->autofan[nr].config);
	mutex_unlock(&data->update_lock);
	return count;
}

static ssize_t show_pwm_freq(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct lm85_data *data = lm85_update_device(dev);
	int freq;

	if (IS_ADT7468_HFPWM(data))
		freq = 22500;
	else
		freq = FREQ_FROM_REG(data->freq_map, data->pwm_freq[nr]);

	return sprintf(buf, "%d\n", freq);
}

static ssize_t set_pwm_freq(struct device *dev,
		struct device_attribute *attr, const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct lm85_data *data = i2c_get_clientdata(client);
	unsigned long val;
	int err;

	err = kstrtoul(buf, 10, &val);
	if (err)
		return err;

	mutex_lock(&data->update_lock);
	/*
	 * The ADT7468 has a special high-frequency PWM output mode,
	 * where all PWM outputs are driven by a 22.5 kHz clock.
	 * This might confuse the user, but there's not much we can do.
	 */
	if (data->type == adt7468 && val >= 11300) {	/* High freq. mode */
		data->cfg5 &= ~ADT7468_HFPWM;
		lm85_write_value(client, ADT7468_REG_CFG5, data->cfg5);
	} else {					/* Low freq. mode */
		data->pwm_freq[nr] = FREQ_TO_REG(data->freq_map, val);
		lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
				 (data->zone[nr].range << 4)
				 | data->pwm_freq[nr]);
		if (data->type == adt7468) {
			data->cfg5 |= ADT7468_HFPWM;
			lm85_write_value(client, ADT7468_REG_CFG5, data->cfg5);
		}
	}
	mutex_unlock(&data->update_lock);
	return count;
}

#define show_pwm_reg(offset)						\
static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR,		\
		show_pwm, set_pwm, offset - 1);				\
static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR,	\
		show_pwm_enable, set_pwm_enable, offset - 1);		\
static SENSOR_DEVICE_ATTR(pwm##offset##_freq, S_IRUGO | S_IWUSR,	\
		show_pwm_freq, set_pwm_freq, offset - 1)

show_pwm_reg(1);
show_pwm_reg(2);
show_pwm_reg(3);

/* Voltages */

static ssize_t show_in(struct device *dev, struct device_attribute *attr,
		char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct lm85_data *data = lm85_update_device(dev);
	return sprintf(buf, "%d\n", INSEXT_FROM_REG(nr, data->in[nr],
						    data->in_ext[nr]));
}

static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
		char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct lm85_data *data = lm85_update_device(dev);
	return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_min[nr]));
}

static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
		const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct lm85_data *data = i2c_get_clientdata(client);
	long val;
	int err;

	err = kstrtol(buf, 10, &val);
	if (err)
		return err;

	mutex_lock(&data->update_lock);
	data->in_min[nr] = INS_TO_REG(nr, val);
	lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]);
	mutex_unlock(&data->update_lock);
	return count;
}

static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
		char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct lm85_data *data = lm85_update_device(dev);
	return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_max[nr]));
}

static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
		const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct lm85_data *data = i2c_get_clientdata(client);
	long val;
	int err;

	err = kstrtol(buf, 10, &val);
	if (err)
		return err;

	mutex_lock(&data->update_lock);
	data->in_max[nr] = INS_TO_REG(nr, val);
	lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]);
	mutex_unlock(&data->update_lock);
	return count;
}

#define show_in_reg(offset)						\
static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO,			\
		show_in, NULL, offset);					\
static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR,		\
		show_in_min, set_in_min, offset);			\
static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR,		\
		show_in_max, set_in_max, offset)

show_in_reg(0);
show_in_reg(1);
show_in_reg(2);
show_in_reg(3);
show_in_reg(4);
show_in_reg(5);
show_in_reg(6);
show_in_reg(7);

/* Temps */

static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
		char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct lm85_data *data = lm85_update_device(dev);
	return sprintf(buf, "%d\n", TEMPEXT_FROM_REG(data->temp[nr],
						     data->temp_ext[nr]));
}

static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
		char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct lm85_data *data = lm85_update_device(dev);
	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
}

static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
		const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct lm85_data *data = i2c_get_clientdata(client);
	long val;
	int err;

	err = kstrtol(buf, 10, &val);
	if (err)
		return err;

	if (IS_ADT7468_OFF64(data))
		val += 64;

	mutex_lock(&data->update_lock);
	data->temp_min[nr] = TEMP_TO_REG(val);
	lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]);
	mutex_unlock(&data->update_lock);
	return count;
}

static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
		char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct lm85_data *data = lm85_update_device(dev);
	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
}

static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
		const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct lm85_data *data = i2c_get_clientdata(client);
	long val;
	int err;

	err = kstrtol(buf, 10, &val);
	if (err)
		return err;

	if (IS_ADT7468_OFF64(data))
		val += 64;

	mutex_lock(&data->update_lock);
	data->temp_max[nr] = TEMP_TO_REG(val);
	lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]);
	mutex_unlock(&data->update_lock);
	return count;
}

#define show_temp_reg(offset)						\
static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO,		\
		show_temp, NULL, offset - 1);				\
static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR,	\
		show_temp_min, set_temp_min, offset - 1);		\
static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR,	\
		show_temp_max, set_temp_max, offset - 1);

show_temp_reg(1);
show_temp_reg(2);
show_temp_reg(3);


/* Automatic PWM control */

static ssize_t show_pwm_auto_channels(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct lm85_data *data = lm85_update_device(dev);
	return sprintf(buf, "%d\n", ZONE_FROM_REG(data->autofan[nr].config));
}

static ssize_t set_pwm_auto_channels(struct device *dev,
		struct device_attribute *attr, const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct lm85_data *data = i2c_get_clientdata(client);
	long val;
	int err;

	err = kstrtol(buf, 10, &val);
	if (err)
		return err;

	mutex_lock(&data->update_lock);
	data->autofan[nr].config = (data->autofan[nr].config & (~0xe0))
		| ZONE_TO_REG(val);
	lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
		data->autofan[nr].config);
	mutex_unlock(&data->update_lock);
	return count;
}

static ssize_t show_pwm_auto_pwm_min(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct lm85_data *data = lm85_update_device(dev);
	return sprintf(buf, "%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm));
}

static ssize_t set_pwm_auto_pwm_min(struct device *dev,
		struct device_attribute *attr, const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct lm85_data *data = i2c_get_clientdata(client);
	unsigned long val;
	int err;

	err = kstrtoul(buf, 10, &val);
	if (err)
		return err;

	mutex_lock(&data->update_lock);
	data->autofan[nr].min_pwm = PWM_TO_REG(val);
	lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr),
		data->autofan[nr].min_pwm);
	mutex_unlock(&data->update_lock);
	return count;
}

static ssize_t show_pwm_auto_pwm_minctl(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct lm85_data *data = lm85_update_device(dev);
	return sprintf(buf, "%d\n", data->autofan[nr].min_off);
}

static ssize_t set_pwm_auto_pwm_minctl(struct device *dev,
		struct device_attribute *attr, const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct lm85_data *data = i2c_get_clientdata(client);
	u8 tmp;
	long val;
	int err;

	err = kstrtol(buf, 10, &val);
	if (err)
		return err;

	mutex_lock(&data->update_lock);
	data->autofan[nr].min_off = val;
	tmp = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
	tmp &= ~(0x20 << nr);
	if (data->autofan[nr].min_off)
		tmp |= 0x20 << nr;
	lm85_write_value(client, LM85_REG_AFAN_SPIKE1, tmp);
	mutex_unlock(&data->update_lock);
	return count;
}

#define pwm_auto(offset)						\
static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels,			\
		S_IRUGO | S_IWUSR, show_pwm_auto_channels,		\
		set_pwm_auto_channels, offset - 1);			\
static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_min,			\
		S_IRUGO | S_IWUSR, show_pwm_auto_pwm_min,		\
		set_pwm_auto_pwm_min, offset - 1);			\
static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_minctl,		\
		S_IRUGO | S_IWUSR, show_pwm_auto_pwm_minctl,		\
		set_pwm_auto_pwm_minctl, offset - 1)

pwm_auto(1);
pwm_auto(2);
pwm_auto(3);

/* Temperature settings for automatic PWM control */

static ssize_t show_temp_auto_temp_off(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct lm85_data *data = lm85_update_device(dev);
	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) -
		HYST_FROM_REG(data->zone[nr].hyst));
}

static ssize_t set_temp_auto_temp_off(struct device *dev,
		struct device_attribute *attr, const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct lm85_data *data = i2c_get_clientdata(client);
	int min;
	long val;
	int err;

	err = kstrtol(buf, 10, &val);
	if (err)
		return err;

	mutex_lock(&data->update_lock);
	min = TEMP_FROM_REG(data->zone[nr].limit);
	data->zone[nr].hyst = HYST_TO_REG(min - val);
	if (nr == 0 || nr == 1) {
		lm85_write_value(client, LM85_REG_AFAN_HYST1,
			(data->zone[0].hyst << 4)
			| data->zone[1].hyst);
	} else {
		lm85_write_value(client, LM85_REG_AFAN_HYST2,
			(data->zone[2].hyst << 4));
	}
	mutex_unlock(&data->update_lock);
	return count;
}

static ssize_t show_temp_auto_temp_min(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct lm85_data *data = lm85_update_device(dev);
	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit));
}

static ssize_t set_temp_auto_temp_min(struct device *dev,
		struct device_attribute *attr, const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct lm85_data *data = i2c_get_clientdata(client);
	long val;
	int err;

	err = kstrtol(buf, 10, &val);
	if (err)
		return err;

	mutex_lock(&data->update_lock);
	data->zone[nr].limit = TEMP_TO_REG(val);
	lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr),
		data->zone[nr].limit);

/* Update temp_auto_max and temp_auto_range */
	data->zone[nr].range = RANGE_TO_REG(
		TEMP_FROM_REG(data->zone[nr].max_desired) -
		TEMP_FROM_REG(data->zone[nr].limit));
	lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
		((data->zone[nr].range & 0x0f) << 4)
		| (data->pwm_freq[nr] & 0x07));

	mutex_unlock(&data->update_lock);
	return count;
}

static ssize_t show_temp_auto_temp_max(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct lm85_data *data = lm85_update_device(dev);
	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) +
		RANGE_FROM_REG(data->zone[nr].range));
}

static ssize_t set_temp_auto_temp_max(struct device *dev,
		struct device_attribute *attr, const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct lm85_data *data = i2c_get_clientdata(client);
	int min;
	long val;
	int err;

	err = kstrtol(buf, 10, &val);
	if (err)
		return err;

	mutex_lock(&data->update_lock);
	min = TEMP_FROM_REG(data->zone[nr].limit);
	data->zone[nr].max_desired = TEMP_TO_REG(val);
	data->zone[nr].range = RANGE_TO_REG(
		val - min);
	lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
		((data->zone[nr].range & 0x0f) << 4)
		| (data->pwm_freq[nr] & 0x07));
	mutex_unlock(&data->update_lock);
	return count;
}

static ssize_t show_temp_auto_temp_crit(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct lm85_data *data = lm85_update_device(dev);
	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].critical));
}

static ssize_t set_temp_auto_temp_crit(struct device *dev,
		struct device_attribute *attr, const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct lm85_data *data = i2c_get_clientdata(client);
	long val;
	int err;

	err = kstrtol(buf, 10, &val);
	if (err)
		return err;

	mutex_lock(&data->update_lock);
	data->zone[nr].critical = TEMP_TO_REG(val);
	lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr),
		data->zone[nr].critical);
	mutex_unlock(&data->update_lock);
	return count;
}

#define temp_auto(offset)						\
static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_off,			\
		S_IRUGO | S_IWUSR, show_temp_auto_temp_off,		\
		set_temp_auto_temp_off, offset - 1);			\
static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_min,			\
		S_IRUGO | S_IWUSR, show_temp_auto_temp_min,		\
		set_temp_auto_temp_min, offset - 1);			\
static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_max,			\
		S_IRUGO | S_IWUSR, show_temp_auto_temp_max,		\
		set_temp_auto_temp_max, offset - 1);			\
static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_crit,		\
		S_IRUGO | S_IWUSR, show_temp_auto_temp_crit,		\
		set_temp_auto_temp_crit, offset - 1);

temp_auto(1);
temp_auto(2);
temp_auto(3);

static struct attribute *lm85_attributes[] = {
	&sensor_dev_attr_fan1_input.dev_attr.attr,
	&sensor_dev_attr_fan2_input.dev_attr.attr,
	&sensor_dev_attr_fan3_input.dev_attr.attr,
	&sensor_dev_attr_fan4_input.dev_attr.attr,
	&sensor_dev_attr_fan1_min.dev_attr.attr,
	&sensor_dev_attr_fan2_min.dev_attr.attr,
	&sensor_dev_attr_fan3_min.dev_attr.attr,
	&sensor_dev_attr_fan4_min.dev_attr.attr,
	&sensor_dev_attr_fan1_alarm.dev_attr.attr,
	&sensor_dev_attr_fan2_alarm.dev_attr.attr,
	&sensor_dev_attr_fan3_alarm.dev_attr.attr,
	&sensor_dev_attr_fan4_alarm.dev_attr.attr,

	&sensor_dev_attr_pwm1.dev_attr.attr,
	&sensor_dev_attr_pwm2.dev_attr.attr,
	&sensor_dev_attr_pwm3.dev_attr.attr,
	&sensor_dev_attr_pwm1_enable.dev_attr.attr,
	&sensor_dev_attr_pwm2_enable.dev_attr.attr,
	&sensor_dev_attr_pwm3_enable.dev_attr.attr,
	&sensor_dev_attr_pwm1_freq.dev_attr.attr,
	&sensor_dev_attr_pwm2_freq.dev_attr.attr,
	&sensor_dev_attr_pwm3_freq.dev_attr.attr,

	&sensor_dev_attr_in0_input.dev_attr.attr,
	&sensor_dev_attr_in1_input.dev_attr.attr,
	&sensor_dev_attr_in2_input.dev_attr.attr,
	&sensor_dev_attr_in3_input.dev_attr.attr,
	&sensor_dev_attr_in0_min.dev_attr.attr,
	&sensor_dev_attr_in1_min.dev_attr.attr,
	&sensor_dev_attr_in2_min.dev_attr.attr,
	&sensor_dev_attr_in3_min.dev_attr.attr,
	&sensor_dev_attr_in0_max.dev_attr.attr,
	&sensor_dev_attr_in1_max.dev_attr.attr,
	&sensor_dev_attr_in2_max.dev_attr.attr,
	&sensor_dev_attr_in3_max.dev_attr.attr,
	&sensor_dev_attr_in0_alarm.dev_attr.attr,
	&sensor_dev_attr_in1_alarm.dev_attr.attr,
	&sensor_dev_attr_in2_alarm.dev_attr.attr,
	&sensor_dev_attr_in3_alarm.dev_attr.attr,

	&sensor_dev_attr_temp1_input.dev_attr.attr,
	&sensor_dev_attr_temp2_input.dev_attr.attr,
	&sensor_dev_attr_temp3_input.dev_attr.attr,
	&sensor_dev_attr_temp1_min.dev_attr.attr,
	&sensor_dev_attr_temp2_min.dev_attr.attr,
	&sensor_dev_attr_temp3_min.dev_attr.attr,
	&sensor_dev_attr_temp1_max.dev_attr.attr,
	&sensor_dev_attr_temp2_max.dev_attr.attr,
	&sensor_dev_attr_temp3_max.dev_attr.attr,
	&sensor_dev_attr_temp1_alarm.dev_attr.attr,
	&sensor_dev_attr_temp2_alarm.dev_attr.attr,
	&sensor_dev_attr_temp3_alarm.dev_attr.attr,
	&sensor_dev_attr_temp1_fault.dev_attr.attr,
	&sensor_dev_attr_temp3_fault.dev_attr.attr,

	&sensor_dev_attr_pwm1_auto_channels.dev_attr.attr,
	&sensor_dev_attr_pwm2_auto_channels.dev_attr.attr,
	&sensor_dev_attr_pwm3_auto_channels.dev_attr.attr,
	&sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr,
	&sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr,
	&sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr,

	&sensor_dev_attr_temp1_auto_temp_min.dev_attr.attr,
	&sensor_dev_attr_temp2_auto_temp_min.dev_attr.attr,
	&sensor_dev_attr_temp3_auto_temp_min.dev_attr.attr,
	&sensor_dev_attr_temp1_auto_temp_max.dev_attr.attr,
	&sensor_dev_attr_temp2_auto_temp_max.dev_attr.attr,
	&sensor_dev_attr_temp3_auto_temp_max.dev_attr.attr,
	&sensor_dev_attr_temp1_auto_temp_crit.dev_attr.attr,
	&sensor_dev_attr_temp2_auto_temp_crit.dev_attr.attr,
	&sensor_dev_attr_temp3_auto_temp_crit.dev_attr.attr,

	&dev_attr_vrm.attr,
	&dev_attr_cpu0_vid.attr,
	&dev_attr_alarms.attr,
	NULL
};

static const struct attribute_group lm85_group = {
	.attrs = lm85_attributes,
};

static struct attribute *lm85_attributes_minctl[] = {
	&sensor_dev_attr_pwm1_auto_pwm_minctl.dev_attr.attr,
	&sensor_dev_attr_pwm2_auto_pwm_minctl.dev_attr.attr,
	&sensor_dev_attr_pwm3_auto_pwm_minctl.dev_attr.attr,
	NULL
};

static const struct attribute_group lm85_group_minctl = {
	.attrs = lm85_attributes_minctl,
};

static struct attribute *lm85_attributes_temp_off[] = {
	&sensor_dev_attr_temp1_auto_temp_off.dev_attr.attr,
	&sensor_dev_attr_temp2_auto_temp_off.dev_attr.attr,
	&sensor_dev_attr_temp3_auto_temp_off.dev_attr.attr,
	NULL
};

static const struct attribute_group lm85_group_temp_off = {
	.attrs = lm85_attributes_temp_off,
};

static struct attribute *lm85_attributes_in4[] = {
	&sensor_dev_attr_in4_input.dev_attr.attr,
	&sensor_dev_attr_in4_min.dev_attr.attr,
	&sensor_dev_attr_in4_max.dev_attr.attr,
	&sensor_dev_attr_in4_alarm.dev_attr.attr,
	NULL
};

static const struct attribute_group lm85_group_in4 = {
	.attrs = lm85_attributes_in4,
};

static struct attribute *lm85_attributes_in567[] = {
	&sensor_dev_attr_in5_input.dev_attr.attr,
	&sensor_dev_attr_in6_input.dev_attr.attr,
	&sensor_dev_attr_in7_input.dev_attr.attr,
	&sensor_dev_attr_in5_min.dev_attr.attr,
	&sensor_dev_attr_in6_min.dev_attr.attr,
	&sensor_dev_attr_in7_min.dev_attr.attr,
	&sensor_dev_attr_in5_max.dev_attr.attr,
	&sensor_dev_attr_in6_max.dev_attr.attr,
	&sensor_dev_attr_in7_max.dev_attr.attr,
	&sensor_dev_attr_in5_alarm.dev_attr.attr,
	&sensor_dev_attr_in6_alarm.dev_attr.attr,
	&sensor_dev_attr_in7_alarm.dev_attr.attr,
	NULL
};

static const struct attribute_group lm85_group_in567 = {
	.attrs = lm85_attributes_in567,
};

static void lm85_init_client(struct i2c_client *client)
{
	int value;

	/* Start monitoring if needed */
	value = lm85_read_value(client, LM85_REG_CONFIG);
	if (!(value & 0x01)) {
		dev_info(&client->dev, "Starting monitoring\n");
		lm85_write_value(client, LM85_REG_CONFIG, value | 0x01);
	}

	/* Warn about unusual configuration bits */
	if (value & 0x02)
		dev_warn(&client->dev, "Device configuration is locked\n");
	if (!(value & 0x04))
		dev_warn(&client->dev, "Device is not ready\n");
}

static int lm85_is_fake(struct i2c_client *client)
{
	/*
	 * Differenciate between real LM96000 and Winbond WPCD377I. The latter
	 * emulate the former except that it has no hardware monitoring function
	 * so the readings are always 0.
	 */
	int i;
	u8 in_temp, fan;

	for (i = 0; i < 8; i++) {
		in_temp = i2c_smbus_read_byte_data(client, 0x20 + i);
		fan = i2c_smbus_read_byte_data(client, 0x28 + i);
		if (in_temp != 0x00 || fan != 0xff)
			return 0;
	}

	return 1;
}

/* Return 0 if detection is successful, -ENODEV otherwise */
static int lm85_detect(struct i2c_client *client, struct i2c_board_info *info)
{
	struct i2c_adapter *adapter = client->adapter;
	int address = client->addr;
	const char *type_name;
	int company, verstep;

	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
		/* We need to be able to do byte I/O */
		return -ENODEV;
	}

	/* Determine the chip type */
	company = lm85_read_value(client, LM85_REG_COMPANY);
	verstep = lm85_read_value(client, LM85_REG_VERSTEP);

	dev_dbg(&adapter->dev,
		"Detecting device at 0x%02x with COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
		address, company, verstep);

	/* All supported chips have the version in common */
	if ((verstep & LM85_VERSTEP_VMASK) != LM85_VERSTEP_GENERIC &&
	    (verstep & LM85_VERSTEP_VMASK) != LM85_VERSTEP_GENERIC2) {
		dev_dbg(&adapter->dev,
			"Autodetection failed: unsupported version\n");
		return -ENODEV;
	}
	type_name = "lm85";

	/* Now, refine the detection */
	if (company == LM85_COMPANY_NATIONAL) {
		switch (verstep) {
		case LM85_VERSTEP_LM85C:
			type_name = "lm85c";
			break;
		case LM85_VERSTEP_LM85B:
			type_name = "lm85b";
			break;
		case LM85_VERSTEP_LM96000_1:
		case LM85_VERSTEP_LM96000_2:
			/* Check for Winbond WPCD377I */
			if (lm85_is_fake(client)) {
				dev_dbg(&adapter->dev,
					"Found Winbond WPCD377I, ignoring\n");
				return -ENODEV;
			}
			break;
		}
	} else if (company == LM85_COMPANY_ANALOG_DEV) {
		switch (verstep) {
		case LM85_VERSTEP_ADM1027:
			type_name = "adm1027";
			break;
		case LM85_VERSTEP_ADT7463:
		case LM85_VERSTEP_ADT7463C:
			type_name = "adt7463";
			break;
		case LM85_VERSTEP_ADT7468_1:
		case LM85_VERSTEP_ADT7468_2:
			type_name = "adt7468";
			break;
		}
	} else if (company == LM85_COMPANY_SMSC) {
		switch (verstep) {
		case LM85_VERSTEP_EMC6D100_A0:
		case LM85_VERSTEP_EMC6D100_A1:
			/* Note: we can't tell a '100 from a '101 */
			type_name = "emc6d100";
			break;
		case LM85_VERSTEP_EMC6D102:
			type_name = "emc6d102";
			break;
		case LM85_VERSTEP_EMC6D103_A0:
		case LM85_VERSTEP_EMC6D103_A1:
			type_name = "emc6d103";
			break;
		case LM85_VERSTEP_EMC6D103S:
			type_name = "emc6d103s";
			break;
		}
	} else {
		dev_dbg(&adapter->dev,
			"Autodetection failed: unknown vendor\n");
		return -ENODEV;
	}

	strlcpy(info->type, type_name, I2C_NAME_SIZE);

	return 0;
}

static void lm85_remove_files(struct i2c_client *client, struct lm85_data *data)
{
	sysfs_remove_group(&client->dev.kobj, &lm85_group);
	if (data->type != emc6d103s) {
		sysfs_remove_group(&client->dev.kobj, &lm85_group_minctl);
		sysfs_remove_group(&client->dev.kobj, &lm85_group_temp_off);
	}
	if (!data->has_vid5)
		sysfs_remove_group(&client->dev.kobj, &lm85_group_in4);
	if (data->type == emc6d100)
		sysfs_remove_group(&client->dev.kobj, &lm85_group_in567);
}

static int lm85_probe(struct i2c_client *client,
		      const struct i2c_device_id *id)
{
	struct lm85_data *data;
	int err;

	data = devm_kzalloc(&client->dev, sizeof(struct lm85_data), GFP_KERNEL);
	if (!data)
		return -ENOMEM;

	i2c_set_clientdata(client, data);
	data->type = id->driver_data;
	mutex_init(&data->update_lock);

	/* Fill in the chip specific driver values */
	switch (data->type) {
	case adm1027:
	case adt7463:
	case adt7468:
	case emc6d100:
	case emc6d102:
	case emc6d103:
	case emc6d103s:
		data->freq_map = adm1027_freq_map;
		break;
	default:
		data->freq_map = lm85_freq_map;
	}

	/* Set the VRM version */
	data->vrm = vid_which_vrm();

	/* Initialize the LM85 chip */
	lm85_init_client(client);

	/* Register sysfs hooks */
	err = sysfs_create_group(&client->dev.kobj, &lm85_group);
	if (err)
		return err;

	/* minctl and temp_off exist on all chips except emc6d103s */
	if (data->type != emc6d103s) {
		err = sysfs_create_group(&client->dev.kobj, &lm85_group_minctl);
		if (err)
			goto err_remove_files;
		err = sysfs_create_group(&client->dev.kobj,
					 &lm85_group_temp_off);
		if (err)
			goto err_remove_files;
	}

	/*
	 * The ADT7463/68 have an optional VRM 10 mode where pin 21 is used
	 * as a sixth digital VID input rather than an analog input.
	 */
	if (data->type == adt7463 || data->type == adt7468) {
		u8 vid = lm85_read_value(client, LM85_REG_VID);
		if (vid & 0x80)
			data->has_vid5 = true;
	}

	if (!data->has_vid5) {
		err = sysfs_create_group(&client->dev.kobj, &lm85_group_in4);
		if (err)
			goto err_remove_files;
	}

	/* The EMC6D100 has 3 additional voltage inputs */
	if (data->type == emc6d100) {
		err = sysfs_create_group(&client->dev.kobj, &lm85_group_in567);
		if (err)
			goto err_remove_files;
	}

	data->hwmon_dev = hwmon_device_register(&client->dev);
	if (IS_ERR(data->hwmon_dev)) {
		err = PTR_ERR(data->hwmon_dev);
		goto err_remove_files;
	}

	return 0;

	/* Error out and cleanup code */
 err_remove_files:
	lm85_remove_files(client, data);
	return err;
}

static int lm85_remove(struct i2c_client *client)
{
	struct lm85_data *data = i2c_get_clientdata(client);
	hwmon_device_unregister(data->hwmon_dev);
	lm85_remove_files(client, data);
	return 0;
}


static int lm85_read_value(struct i2c_client *client, u8 reg)
{
	int res;

	/* What size location is it? */
	switch (reg) {
	case LM85_REG_FAN(0):  /* Read WORD data */
	case LM85_REG_FAN(1):
	case LM85_REG_FAN(2):
	case LM85_REG_FAN(3):
	case LM85_REG_FAN_MIN(0):
	case LM85_REG_FAN_MIN(1):
	case LM85_REG_FAN_MIN(2):
	case LM85_REG_FAN_MIN(3):
	case LM85_REG_ALARM1:	/* Read both bytes at once */
		res = i2c_smbus_read_byte_data(client, reg) & 0xff;
		res |= i2c_smbus_read_byte_data(client, reg + 1) << 8;
		break;
	default:	/* Read BYTE data */
		res = i2c_smbus_read_byte_data(client, reg);
		break;
	}

	return res;
}

static void lm85_write_value(struct i2c_client *client, u8 reg, int value)
{
	switch (reg) {
	case LM85_REG_FAN(0):  /* Write WORD data */
	case LM85_REG_FAN(1):
	case LM85_REG_FAN(2):
	case LM85_REG_FAN(3):
	case LM85_REG_FAN_MIN(0):
	case LM85_REG_FAN_MIN(1):
	case LM85_REG_FAN_MIN(2):
	case LM85_REG_FAN_MIN(3):
	/* NOTE: ALARM is read only, so not included here */
		i2c_smbus_write_byte_data(client, reg, value & 0xff);
		i2c_smbus_write_byte_data(client, reg + 1, value >> 8);
		break;
	default:	/* Write BYTE data */
		i2c_smbus_write_byte_data(client, reg, value);
		break;
	}
}

static struct lm85_data *lm85_update_device(struct device *dev)
{
	struct i2c_client *client = to_i2c_client(dev);
	struct lm85_data *data = i2c_get_clientdata(client);
	int i;

	mutex_lock(&data->update_lock);

	if (!data->valid ||
	     time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL)) {
		/* Things that change quickly */
		dev_dbg(&client->dev, "Reading sensor values\n");

		/*
		 * Have to read extended bits first to "freeze" the
		 * more significant bits that are read later.
		 * There are 2 additional resolution bits per channel and we
		 * have room for 4, so we shift them to the left.
		 */
		if (data->type == adm1027 || data->type == adt7463 ||
		    data->type == adt7468) {
			int ext1 = lm85_read_value(client,
						   ADM1027_REG_EXTEND_ADC1);
			int ext2 =  lm85_read_value(client,
						    ADM1027_REG_EXTEND_ADC2);
			int val = (ext1 << 8) + ext2;

			for (i = 0; i <= 4; i++)
				data->in_ext[i] =
					((val >> (i * 2)) & 0x03) << 2;

			for (i = 0; i <= 2; i++)
				data->temp_ext[i] =
					(val >> ((i + 4) * 2)) & 0x0c;
		}

		data->vid = lm85_read_value(client, LM85_REG_VID);

		for (i = 0; i <= 3; ++i) {
			data->in[i] =
			    lm85_read_value(client, LM85_REG_IN(i));
			data->fan[i] =
			    lm85_read_value(client, LM85_REG_FAN(i));
		}

		if (!data->has_vid5)
			data->in[4] = lm85_read_value(client, LM85_REG_IN(4));

		if (data->type == adt7468)
			data->cfg5 = lm85_read_value(client, ADT7468_REG_CFG5);

		for (i = 0; i <= 2; ++i) {
			data->temp[i] =
			    lm85_read_value(client, LM85_REG_TEMP(i));
			data->pwm[i] =
			    lm85_read_value(client, LM85_REG_PWM(i));

			if (IS_ADT7468_OFF64(data))
				data->temp[i] -= 64;
		}

		data->alarms = lm85_read_value(client, LM85_REG_ALARM1);

		if (data->type == emc6d100) {
			/* Three more voltage sensors */
			for (i = 5; i <= 7; ++i) {
				data->in[i] = lm85_read_value(client,
							EMC6D100_REG_IN(i));
			}
			/* More alarm bits */
			data->alarms |= lm85_read_value(client,
						EMC6D100_REG_ALARM3) << 16;
		} else if (data->type == emc6d102 || data->type == emc6d103 ||
			   data->type == emc6d103s) {
			/*
			 * Have to read LSB bits after the MSB ones because
			 * the reading of the MSB bits has frozen the
			 * LSBs (backward from the ADM1027).
			 */
			int ext1 = lm85_read_value(client,
						   EMC6D102_REG_EXTEND_ADC1);
			int ext2 = lm85_read_value(client,
						   EMC6D102_REG_EXTEND_ADC2);
			int ext3 = lm85_read_value(client,
						   EMC6D102_REG_EXTEND_ADC3);
			int ext4 = lm85_read_value(client,
						   EMC6D102_REG_EXTEND_ADC4);
			data->in_ext[0] = ext3 & 0x0f;
			data->in_ext[1] = ext4 & 0x0f;
			data->in_ext[2] = ext4 >> 4;
			data->in_ext[3] = ext3 >> 4;
			data->in_ext[4] = ext2 >> 4;

			data->temp_ext[0] = ext1 & 0x0f;
			data->temp_ext[1] = ext2 & 0x0f;
			data->temp_ext[2] = ext1 >> 4;
		}

		data->last_reading = jiffies;
	}  /* last_reading */

	if (!data->valid ||
	     time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL)) {
		/* Things that don't change often */
		dev_dbg(&client->dev, "Reading config values\n");

		for (i = 0; i <= 3; ++i) {
			data->in_min[i] =
			    lm85_read_value(client, LM85_REG_IN_MIN(i));
			data->in_max[i] =
			    lm85_read_value(client, LM85_REG_IN_MAX(i));
			data->fan_min[i] =
			    lm85_read_value(client, LM85_REG_FAN_MIN(i));
		}

		if (!data->has_vid5)  {
			data->in_min[4] = lm85_read_value(client,
					  LM85_REG_IN_MIN(4));
			data->in_max[4] = lm85_read_value(client,
					  LM85_REG_IN_MAX(4));
		}

		if (data->type == emc6d100) {
			for (i = 5; i <= 7; ++i) {
				data->in_min[i] = lm85_read_value(client,
						EMC6D100_REG_IN_MIN(i));
				data->in_max[i] = lm85_read_value(client,
						EMC6D100_REG_IN_MAX(i));
			}
		}

		for (i = 0; i <= 2; ++i) {
			int val;

			data->temp_min[i] =
			    lm85_read_value(client, LM85_REG_TEMP_MIN(i));
			data->temp_max[i] =
			    lm85_read_value(client, LM85_REG_TEMP_MAX(i));

			data->autofan[i].config =
			    lm85_read_value(client, LM85_REG_AFAN_CONFIG(i));
			val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i));
			data->pwm_freq[i] = val & 0x07;
			data->zone[i].range = val >> 4;
			data->autofan[i].min_pwm =
			    lm85_read_value(client, LM85_REG_AFAN_MINPWM(i));
			data->zone[i].limit =
			    lm85_read_value(client, LM85_REG_AFAN_LIMIT(i));
			data->zone[i].critical =
			    lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i));

			if (IS_ADT7468_OFF64(data)) {
				data->temp_min[i] -= 64;
				data->temp_max[i] -= 64;
				data->zone[i].limit -= 64;
				data->zone[i].critical -= 64;
			}
		}

		if (data->type != emc6d103s) {
			i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
			data->autofan[0].min_off = (i & 0x20) != 0;
			data->autofan[1].min_off = (i & 0x40) != 0;
			data->autofan[2].min_off = (i & 0x80) != 0;

			i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
			data->zone[0].hyst = i >> 4;
			data->zone[1].hyst = i & 0x0f;

			i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
			data->zone[2].hyst = i >> 4;
		}

		data->last_config = jiffies;
	}  /* last_config */

	data->valid = 1;

	mutex_unlock(&data->update_lock);

	return data;
}

module_i2c_driver(lm85_driver);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, "
	"Margit Schubert-While <margitsw@t-online.de>, "
	"Justin Thiessen <jthiessen@penguincomputing.com>");
MODULE_DESCRIPTION("LM85-B, LM85-C driver");