aboutsummaryrefslogtreecommitdiff
path: root/drivers/hwmon/adm1026.c
blob: 0531867484f417e7692d92b44066bdfc7c7758d8 (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
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
/*
    adm1026.c - Part of lm_sensors, Linux kernel modules for hardware
	     monitoring
    Copyright (C) 2002, 2003  Philip Pokorny <ppokorny@penguincomputing.com>
    Copyright (C) 2004 Justin Thiessen <jthiessen@penguincomputing.com>

    Chip details at:

    <http://www.onsemi.com/PowerSolutions/product.do?id=ADM1026>

    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-sysfs.h>
#include <linux/hwmon-vid.h>
#include <linux/err.h>
#include <linux/mutex.h>

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

static int gpio_input[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,
				-1, -1, -1, -1, -1, -1, -1, -1 };
static int gpio_output[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,
				-1, -1, -1, -1, -1, -1, -1, -1 };
static int gpio_inverted[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,
				-1, -1, -1, -1, -1, -1, -1, -1 };
static int gpio_normal[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,
				-1, -1, -1, -1, -1, -1, -1, -1 };
static int gpio_fan[8] = { -1, -1, -1, -1, -1, -1, -1, -1 };
module_param_array(gpio_input, int, NULL, 0);
MODULE_PARM_DESC(gpio_input, "List of GPIO pins (0-16) to program as inputs");
module_param_array(gpio_output, int, NULL, 0);
MODULE_PARM_DESC(gpio_output, "List of GPIO pins (0-16) to program as "
	"outputs");
module_param_array(gpio_inverted, int, NULL, 0);
MODULE_PARM_DESC(gpio_inverted, "List of GPIO pins (0-16) to program as "
	"inverted");
module_param_array(gpio_normal, int, NULL, 0);
MODULE_PARM_DESC(gpio_normal, "List of GPIO pins (0-16) to program as "
	"normal/non-inverted");
module_param_array(gpio_fan, int, NULL, 0);
MODULE_PARM_DESC(gpio_fan, "List of GPIO pins (0-7) to program as fan tachs");

/* Many ADM1026 constants specified below */

/* The ADM1026 registers */
#define ADM1026_REG_CONFIG1	0x00
#define CFG1_MONITOR		0x01
#define CFG1_INT_ENABLE		0x02
#define CFG1_INT_CLEAR		0x04
#define CFG1_AIN8_9		0x08
#define CFG1_THERM_HOT		0x10
#define CFG1_DAC_AFC		0x20
#define CFG1_PWM_AFC		0x40
#define CFG1_RESET		0x80

#define ADM1026_REG_CONFIG2	0x01
/* CONFIG2 controls FAN0/GPIO0 through FAN7/GPIO7 */

#define ADM1026_REG_CONFIG3	0x07
#define CFG3_GPIO16_ENABLE	0x01
#define CFG3_CI_CLEAR		0x02
#define CFG3_VREF_250		0x04
#define CFG3_GPIO16_DIR		0x40
#define CFG3_GPIO16_POL		0x80

#define ADM1026_REG_E2CONFIG	0x13
#define E2CFG_READ		0x01
#define E2CFG_WRITE		0x02
#define E2CFG_ERASE		0x04
#define E2CFG_ROM		0x08
#define E2CFG_CLK_EXT		0x80

/* There are 10 general analog inputs and 7 dedicated inputs
 * They are:
 *    0 - 9  =  AIN0 - AIN9
 *       10  =  Vbat
 *       11  =  3.3V Standby
 *       12  =  3.3V Main
 *       13  =  +5V
 *       14  =  Vccp (CPU core voltage)
 *       15  =  +12V
 *       16  =  -12V
 */
static u16 ADM1026_REG_IN[] = {
		0x30, 0x31, 0x32, 0x33, 0x34, 0x35,
		0x36, 0x37, 0x27, 0x29, 0x26, 0x2a,
		0x2b, 0x2c, 0x2d, 0x2e, 0x2f
	};
static u16 ADM1026_REG_IN_MIN[] = {
		0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d,
		0x5e, 0x5f, 0x6d, 0x49, 0x6b, 0x4a,
		0x4b, 0x4c, 0x4d, 0x4e, 0x4f
	};
static u16 ADM1026_REG_IN_MAX[] = {
		0x50, 0x51, 0x52, 0x53, 0x54, 0x55,
		0x56, 0x57, 0x6c, 0x41, 0x6a, 0x42,
		0x43, 0x44, 0x45, 0x46, 0x47
	};

/* Temperatures are:
 *    0 - Internal
 *    1 - External 1
 *    2 - External 2
 */
static u16 ADM1026_REG_TEMP[] = { 0x1f, 0x28, 0x29 };
static u16 ADM1026_REG_TEMP_MIN[] = { 0x69, 0x48, 0x49 };
static u16 ADM1026_REG_TEMP_MAX[] = { 0x68, 0x40, 0x41 };
static u16 ADM1026_REG_TEMP_TMIN[] = { 0x10, 0x11, 0x12 };
static u16 ADM1026_REG_TEMP_THERM[] = { 0x0d, 0x0e, 0x0f };
static u16 ADM1026_REG_TEMP_OFFSET[] = { 0x1e, 0x6e, 0x6f };

#define ADM1026_REG_FAN(nr)		(0x38 + (nr))
#define ADM1026_REG_FAN_MIN(nr)		(0x60 + (nr))
#define ADM1026_REG_FAN_DIV_0_3		0x02
#define ADM1026_REG_FAN_DIV_4_7		0x03

#define ADM1026_REG_DAC			0x04
#define ADM1026_REG_PWM			0x05

#define ADM1026_REG_GPIO_CFG_0_3	0x08
#define ADM1026_REG_GPIO_CFG_4_7	0x09
#define ADM1026_REG_GPIO_CFG_8_11	0x0a
#define ADM1026_REG_GPIO_CFG_12_15	0x0b
/* CFG_16 in REG_CFG3 */
#define ADM1026_REG_GPIO_STATUS_0_7	0x24
#define ADM1026_REG_GPIO_STATUS_8_15	0x25
/* STATUS_16 in REG_STATUS4 */
#define ADM1026_REG_GPIO_MASK_0_7	0x1c
#define ADM1026_REG_GPIO_MASK_8_15	0x1d
/* MASK_16 in REG_MASK4 */

#define ADM1026_REG_COMPANY		0x16
#define ADM1026_REG_VERSTEP		0x17
/* These are the recognized values for the above regs */
#define ADM1026_COMPANY_ANALOG_DEV	0x41
#define ADM1026_VERSTEP_GENERIC		0x40
#define ADM1026_VERSTEP_ADM1026		0x44

#define ADM1026_REG_MASK1		0x18
#define ADM1026_REG_MASK2		0x19
#define ADM1026_REG_MASK3		0x1a
#define ADM1026_REG_MASK4		0x1b

#define ADM1026_REG_STATUS1		0x20
#define ADM1026_REG_STATUS2		0x21
#define ADM1026_REG_STATUS3		0x22
#define ADM1026_REG_STATUS4		0x23

#define ADM1026_FAN_ACTIVATION_TEMP_HYST -6
#define ADM1026_FAN_CONTROL_TEMP_RANGE	20
#define ADM1026_PWM_MAX			255

/* 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.  These are the
 *   voltages corresponding to 3/4 of full scale (192 or 0xc0)
 *   NOTE: The -12V input needs an additional factor to account
 *      for the Vref pullup resistor.
 *      NEG12_OFFSET = SCALE * Vref / V-192 - Vref
 *                   = 13875 * 2.50 / 1.875 - 2500
 *                   = 16000
 *
 * The values in this table are based on Table II, page 15 of the
 *    datasheet.
 */
static int adm1026_scaling[] = { /* .001 Volts */
		2250, 2250, 2250, 2250, 2250, 2250,
		1875, 1875, 1875, 1875, 3000, 3330,
		3330, 4995, 2250, 12000, 13875
	};
#define NEG12_OFFSET  16000
#define SCALE(val, from, to) (((val)*(to) + ((from)/2))/(from))
#define INS_TO_REG(n, val)  (SENSORS_LIMIT(SCALE(val, adm1026_scaling[n], 192),\
	0, 255))
#define INS_FROM_REG(n, val) (SCALE(val, 192, adm1026_scaling[n]))

/* FAN speed is measured using 22.5kHz clock and counts for 2 pulses
 *   and we assume a 2 pulse-per-rev fan tach signal
 *      22500 kHz * 60 (sec/min) * 2 (pulse) / 2 (pulse/rev) == 1350000
 */
#define FAN_TO_REG(val, div)  ((val) <= 0 ? 0xff : \
				SENSORS_LIMIT(1350000/((val)*(div)), 1, 254))
#define FAN_FROM_REG(val, div) ((val) == 0 ? -1:(val) == 0xff ? 0 : \
				1350000/((val)*(div)))
#define DIV_FROM_REG(val) (1<<(val))
#define DIV_TO_REG(val) ((val) >= 8 ? 3 : (val) >= 4 ? 2 : (val) >= 2 ? 1 : 0)

/* Temperature is reported in 1 degC increments */
#define TEMP_TO_REG(val) (SENSORS_LIMIT(((val)+((val)<0 ? -500 : 500))/1000,\
	-127, 127))
#define TEMP_FROM_REG(val) ((val) * 1000)
#define OFFSET_TO_REG(val) (SENSORS_LIMIT(((val)+((val)<0 ? -500 : 500))/1000,\
	-127, 127))
#define OFFSET_FROM_REG(val) ((val) * 1000)

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

#define PWM_MIN_TO_REG(val) ((val) & 0xf0)
#define PWM_MIN_FROM_REG(val) (((val) & 0xf0) + ((val) >> 4))

/* Analog output is a voltage, and scaled to millivolts.  The datasheet
 *   indicates that the DAC could be used to drive the fans, but in our
 *   example board (Arima HDAMA) it isn't connected to the fans at all.
 */
#define DAC_TO_REG(val) (SENSORS_LIMIT(((((val)*255)+500)/2500), 0, 255))
#define DAC_FROM_REG(val) (((val)*2500)/255)

/* 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
 *    So, we keep the config data up to date in the cache
 *    when it is written and only sample it once every 5 *minutes*
 */
#define ADM1026_DATA_INTERVAL		(1 * HZ)
#define ADM1026_CONFIG_INTERVAL		(5 * 60 * HZ)

/* We allow for multiple chips in a single system.
 *
 * For each registered ADM1026, we need to keep state information
 * at client->data. The adm1026_data structure is dynamically
 * allocated, when a new client structure is allocated. */

struct pwm_data {
	u8 pwm;
	u8 enable;
	u8 auto_pwm_min;
};

struct adm1026_data {
	struct device *hwmon_dev;

	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[17];		/* Register value */
	u8 in_max[17];		/* Register value */
	u8 in_min[17];		/* Register value */
	s8 temp[3];		/* Register value */
	s8 temp_min[3];		/* Register value */
	s8 temp_max[3];		/* Register value */
	s8 temp_tmin[3];	/* Register value */
	s8 temp_crit[3];	/* Register value */
	s8 temp_offset[3];	/* Register value */
	u8 fan[8];		/* Register value */
	u8 fan_min[8];		/* Register value */
	u8 fan_div[8];		/* Decoded value */
	struct pwm_data pwm1;	/* Pwm control values */
	u8 vrm;			/* VRM version */
	u8 analog_out;		/* Register value (DAC) */
	long alarms;		/* Register encoding, combined */
	long alarm_mask;	/* Register encoding, combined */
	long gpio;		/* Register encoding, combined */
	long gpio_mask;		/* Register encoding, combined */
	u8 gpio_config[17];	/* Decoded value */
	u8 config1;		/* Register value */
	u8 config2;		/* Register value */
	u8 config3;		/* Register value */
};

static int adm1026_probe(struct i2c_client *client,
			 const struct i2c_device_id *id);
static int adm1026_detect(struct i2c_client *client,
			  struct i2c_board_info *info);
static int adm1026_remove(struct i2c_client *client);
static int adm1026_read_value(struct i2c_client *client, u8 reg);
static int adm1026_write_value(struct i2c_client *client, u8 reg, int value);
static void adm1026_print_gpio(struct i2c_client *client);
static void adm1026_fixup_gpio(struct i2c_client *client);
static struct adm1026_data *adm1026_update_device(struct device *dev);
static void adm1026_init_client(struct i2c_client *client);


static const struct i2c_device_id adm1026_id[] = {
	{ "adm1026", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, adm1026_id);

static struct i2c_driver adm1026_driver = {
	.class		= I2C_CLASS_HWMON,
	.driver = {
		.name	= "adm1026",
	},
	.probe		= adm1026_probe,
	.remove		= adm1026_remove,
	.id_table	= adm1026_id,
	.detect		= adm1026_detect,
	.address_list	= normal_i2c,
};

static int adm1026_read_value(struct i2c_client *client, u8 reg)
{
	int res;

	if (reg < 0x80) {
		/* "RAM" locations */
		res = i2c_smbus_read_byte_data(client, reg) & 0xff;
	} else {
		/* EEPROM, do nothing */
		res = 0;
	}
	return res;
}

static int adm1026_write_value(struct i2c_client *client, u8 reg, int value)
{
	int res;

	if (reg < 0x80) {
		/* "RAM" locations */
		res = i2c_smbus_write_byte_data(client, reg, value);
	} else {
		/* EEPROM, do nothing */
		res = 0;
	}
	return res;
}

static void adm1026_init_client(struct i2c_client *client)
{
	int value, i;
	struct adm1026_data *data = i2c_get_clientdata(client);

	dev_dbg(&client->dev, "Initializing device\n");
	/* Read chip config */
	data->config1 = adm1026_read_value(client, ADM1026_REG_CONFIG1);
	data->config2 = adm1026_read_value(client, ADM1026_REG_CONFIG2);
	data->config3 = adm1026_read_value(client, ADM1026_REG_CONFIG3);

	/* Inform user of chip config */
	dev_dbg(&client->dev, "ADM1026_REG_CONFIG1 is: 0x%02x\n",
		data->config1);
	if ((data->config1 & CFG1_MONITOR) == 0) {
		dev_dbg(&client->dev, "Monitoring not currently "
			"enabled.\n");
	}
	if (data->config1 & CFG1_INT_ENABLE) {
		dev_dbg(&client->dev, "SMBALERT interrupts are "
			"enabled.\n");
	}
	if (data->config1 & CFG1_AIN8_9) {
		dev_dbg(&client->dev, "in8 and in9 enabled. "
			"temp3 disabled.\n");
	} else {
		dev_dbg(&client->dev, "temp3 enabled.  in8 and "
			"in9 disabled.\n");
	}
	if (data->config1 & CFG1_THERM_HOT) {
		dev_dbg(&client->dev, "Automatic THERM, PWM, "
			"and temp limits enabled.\n");
	}

	if (data->config3 & CFG3_GPIO16_ENABLE) {
		dev_dbg(&client->dev, "GPIO16 enabled.  THERM "
			"pin disabled.\n");
	} else {
		dev_dbg(&client->dev, "THERM pin enabled.  "
			"GPIO16 disabled.\n");
	}
	if (data->config3 & CFG3_VREF_250) {
		dev_dbg(&client->dev, "Vref is 2.50 Volts.\n");
	} else {
		dev_dbg(&client->dev, "Vref is 1.82 Volts.\n");
	}
	/* Read and pick apart the existing GPIO configuration */
	value = 0;
	for (i = 0;i <= 15;++i) {
		if ((i & 0x03) == 0) {
			value = adm1026_read_value(client,
					ADM1026_REG_GPIO_CFG_0_3 + i/4);
		}
		data->gpio_config[i] = value & 0x03;
		value >>= 2;
	}
	data->gpio_config[16] = (data->config3 >> 6) & 0x03;

	/* ... and then print it */
	adm1026_print_gpio(client);

	/* If the user asks us to reprogram the GPIO config, then
	 * do it now.
	 */
	if (gpio_input[0] != -1 || gpio_output[0] != -1
		|| gpio_inverted[0] != -1 || gpio_normal[0] != -1
		|| gpio_fan[0] != -1) {
		adm1026_fixup_gpio(client);
	}

	/* WE INTENTIONALLY make no changes to the limits,
	 *   offsets, pwms, fans and zones.  If they were
	 *   configured, we don't want to mess with them.
	 *   If they weren't, the default is 100% PWM, no
	 *   control and will suffice until 'sensors -s'
	 *   can be run by the user.  We DO set the default
	 *   value for pwm1.auto_pwm_min to its maximum
	 *   so that enabling automatic pwm fan control
	 *   without first setting a value for pwm1.auto_pwm_min
	 *   will not result in potentially dangerous fan speed decrease.
	 */
	data->pwm1.auto_pwm_min=255;
	/* Start monitoring */
	value = adm1026_read_value(client, ADM1026_REG_CONFIG1);
	/* Set MONITOR, clear interrupt acknowledge and s/w reset */
	value = (value | CFG1_MONITOR) & (~CFG1_INT_CLEAR & ~CFG1_RESET);
	dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value);
	data->config1 = value;
	adm1026_write_value(client, ADM1026_REG_CONFIG1, value);

	/* initialize fan_div[] to hardware defaults */
	value = adm1026_read_value(client, ADM1026_REG_FAN_DIV_0_3) |
		(adm1026_read_value(client, ADM1026_REG_FAN_DIV_4_7) << 8);
	for (i = 0;i <= 7;++i) {
		data->fan_div[i] = DIV_FROM_REG(value & 0x03);
		value >>= 2;
	}
}

static void adm1026_print_gpio(struct i2c_client *client)
{
	struct adm1026_data *data = i2c_get_clientdata(client);
	int i;

	dev_dbg(&client->dev, "GPIO config is:\n");
	for (i = 0;i <= 7;++i) {
		if (data->config2 & (1 << i)) {
			dev_dbg(&client->dev, "\t%sGP%s%d\n",
				data->gpio_config[i] & 0x02 ? "" : "!",
				data->gpio_config[i] & 0x01 ? "OUT" : "IN",
				i);
		} else {
			dev_dbg(&client->dev, "\tFAN%d\n", i);
		}
	}
	for (i = 8;i <= 15;++i) {
		dev_dbg(&client->dev, "\t%sGP%s%d\n",
			data->gpio_config[i] & 0x02 ? "" : "!",
			data->gpio_config[i] & 0x01 ? "OUT" : "IN",
			i);
	}
	if (data->config3 & CFG3_GPIO16_ENABLE) {
		dev_dbg(&client->dev, "\t%sGP%s16\n",
			data->gpio_config[16] & 0x02 ? "" : "!",
			data->gpio_config[16] & 0x01 ? "OUT" : "IN");
	} else {
		/* GPIO16 is THERM */
		dev_dbg(&client->dev, "\tTHERM\n");
	}
}

static void adm1026_fixup_gpio(struct i2c_client *client)
{
	struct adm1026_data *data = i2c_get_clientdata(client);
	int i;
	int value;

	/* Make the changes requested. */
	/* We may need to unlock/stop monitoring or soft-reset the
	 *    chip before we can make changes.  This hasn't been
	 *    tested much.  FIXME
	 */

	/* Make outputs */
	for (i = 0;i <= 16;++i) {
		if (gpio_output[i] >= 0 && gpio_output[i] <= 16) {
			data->gpio_config[gpio_output[i]] |= 0x01;
		}
		/* if GPIO0-7 is output, it isn't a FAN tach */
		if (gpio_output[i] >= 0 && gpio_output[i] <= 7) {
			data->config2 |= 1 << gpio_output[i];
		}
	}

	/* Input overrides output */
	for (i = 0;i <= 16;++i) {
		if (gpio_input[i] >= 0 && gpio_input[i] <= 16) {
			data->gpio_config[gpio_input[i]] &= ~ 0x01;
		}
		/* if GPIO0-7 is input, it isn't a FAN tach */
		if (gpio_input[i] >= 0 && gpio_input[i] <= 7) {
			data->config2 |= 1 << gpio_input[i];
		}
	}

	/* Inverted */
	for (i = 0;i <= 16;++i) {
		if (gpio_inverted[i] >= 0 && gpio_inverted[i] <= 16) {
			data->gpio_config[gpio_inverted[i]] &= ~ 0x02;
		}
	}

	/* Normal overrides inverted */
	for (i = 0;i <= 16;++i) {
		if (gpio_normal[i] >= 0 && gpio_normal[i] <= 16) {
			data->gpio_config[gpio_normal[i]] |= 0x02;
		}
	}

	/* Fan overrides input and output */
	for (i = 0;i <= 7;++i) {
		if (gpio_fan[i] >= 0 && gpio_fan[i] <= 7) {
			data->config2 &= ~(1 << gpio_fan[i]);
		}
	}

	/* Write new configs to registers */
	adm1026_write_value(client, ADM1026_REG_CONFIG2, data->config2);
	data->config3 = (data->config3 & 0x3f)
			| ((data->gpio_config[16] & 0x03) << 6);
	adm1026_write_value(client, ADM1026_REG_CONFIG3, data->config3);
	for (i = 15, value = 0;i >= 0;--i) {
		value <<= 2;
		value |= data->gpio_config[i] & 0x03;
		if ((i & 0x03) == 0) {
			adm1026_write_value(client,
					ADM1026_REG_GPIO_CFG_0_3 + i/4,
					value);
			value = 0;
		}
	}

	/* Print the new config */
	adm1026_print_gpio(client);
}


static struct adm1026_data *adm1026_update_device(struct device *dev)
{
	struct i2c_client *client = to_i2c_client(dev);
	struct adm1026_data *data = i2c_get_clientdata(client);
	int i;
	long value, alarms, gpio;

	mutex_lock(&data->update_lock);
	if (!data->valid
	    || time_after(jiffies, data->last_reading + ADM1026_DATA_INTERVAL)) {
		/* Things that change quickly */
		dev_dbg(&client->dev, "Reading sensor values\n");
		for (i = 0;i <= 16;++i) {
			data->in[i] =
			    adm1026_read_value(client, ADM1026_REG_IN[i]);
		}

		for (i = 0;i <= 7;++i) {
			data->fan[i] =
			    adm1026_read_value(client, ADM1026_REG_FAN(i));
		}

		for (i = 0;i <= 2;++i) {
			/* NOTE: temp[] is s8 and we assume 2's complement
			 *   "conversion" in the assignment */
			data->temp[i] =
			    adm1026_read_value(client, ADM1026_REG_TEMP[i]);
		}

		data->pwm1.pwm = adm1026_read_value(client,
			ADM1026_REG_PWM);
		data->analog_out = adm1026_read_value(client,
			ADM1026_REG_DAC);
		/* GPIO16 is MSbit of alarms, move it to gpio */
		alarms = adm1026_read_value(client, ADM1026_REG_STATUS4);
		gpio = alarms & 0x80 ? 0x0100 : 0; /* GPIO16 */
		alarms &= 0x7f;
		alarms <<= 8;
		alarms |= adm1026_read_value(client, ADM1026_REG_STATUS3);
		alarms <<= 8;
		alarms |= adm1026_read_value(client, ADM1026_REG_STATUS2);
		alarms <<= 8;
		alarms |= adm1026_read_value(client, ADM1026_REG_STATUS1);
		data->alarms = alarms;

		/* Read the GPIO values */
		gpio |= adm1026_read_value(client,
			ADM1026_REG_GPIO_STATUS_8_15);
		gpio <<= 8;
		gpio |= adm1026_read_value(client,
			ADM1026_REG_GPIO_STATUS_0_7);
		data->gpio = gpio;

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

	if (!data->valid ||
	    time_after(jiffies, data->last_config + ADM1026_CONFIG_INTERVAL)) {
		/* Things that don't change often */
		dev_dbg(&client->dev, "Reading config values\n");
		for (i = 0;i <= 16;++i) {
			data->in_min[i] = adm1026_read_value(client,
				ADM1026_REG_IN_MIN[i]);
			data->in_max[i] = adm1026_read_value(client,
				ADM1026_REG_IN_MAX[i]);
		}

		value = adm1026_read_value(client, ADM1026_REG_FAN_DIV_0_3)
			| (adm1026_read_value(client, ADM1026_REG_FAN_DIV_4_7)
			<< 8);
		for (i = 0;i <= 7;++i) {
			data->fan_min[i] = adm1026_read_value(client,
				ADM1026_REG_FAN_MIN(i));
			data->fan_div[i] = DIV_FROM_REG(value & 0x03);
			value >>= 2;
		}

		for (i = 0; i <= 2; ++i) {
			/* NOTE: temp_xxx[] are s8 and we assume 2's
			 *    complement "conversion" in the assignment
			 */
			data->temp_min[i] = adm1026_read_value(client,
				ADM1026_REG_TEMP_MIN[i]);
			data->temp_max[i] = adm1026_read_value(client,
				ADM1026_REG_TEMP_MAX[i]);
			data->temp_tmin[i] = adm1026_read_value(client,
				ADM1026_REG_TEMP_TMIN[i]);
			data->temp_crit[i] = adm1026_read_value(client,
				ADM1026_REG_TEMP_THERM[i]);
			data->temp_offset[i] = adm1026_read_value(client,
				ADM1026_REG_TEMP_OFFSET[i]);
		}

		/* Read the STATUS/alarm masks */
		alarms = adm1026_read_value(client, ADM1026_REG_MASK4);
		gpio = alarms & 0x80 ? 0x0100 : 0; /* GPIO16 */
		alarms = (alarms & 0x7f) << 8;
		alarms |= adm1026_read_value(client, ADM1026_REG_MASK3);
		alarms <<= 8;
		alarms |= adm1026_read_value(client, ADM1026_REG_MASK2);
		alarms <<= 8;
		alarms |= adm1026_read_value(client, ADM1026_REG_MASK1);
		data->alarm_mask = alarms;

		/* Read the GPIO values */
		gpio |= adm1026_read_value(client,
			ADM1026_REG_GPIO_MASK_8_15);
		gpio <<= 8;
		gpio |= adm1026_read_value(client, ADM1026_REG_GPIO_MASK_0_7);
		data->gpio_mask = gpio;

		/* Read various values from CONFIG1 */
		data->config1 = adm1026_read_value(client,
			ADM1026_REG_CONFIG1);
		if (data->config1 & CFG1_PWM_AFC) {
			data->pwm1.enable = 2;
			data->pwm1.auto_pwm_min =
				PWM_MIN_FROM_REG(data->pwm1.pwm);
		}
		/* Read the GPIO config */
		data->config2 = adm1026_read_value(client,
			ADM1026_REG_CONFIG2);
		data->config3 = adm1026_read_value(client,
			ADM1026_REG_CONFIG3);
		data->gpio_config[16] = (data->config3 >> 6) & 0x03;

		value = 0;
		for (i = 0;i <= 15;++i) {
			if ((i & 0x03) == 0) {
				value = adm1026_read_value(client,
					    ADM1026_REG_GPIO_CFG_0_3 + i/4);
			}
			data->gpio_config[i] = value & 0x03;
			value >>= 2;
		}

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

	data->valid = 1;
	mutex_unlock(&data->update_lock);
	return data;
}

static ssize_t show_in(struct device *dev, struct device_attribute *attr,
		char *buf)
{
	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
	int nr = sensor_attr->index;
	struct adm1026_data *data = adm1026_update_device(dev);
	return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in[nr]));
}
static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
		char *buf)
{
	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
	int nr = sensor_attr->index;
	struct adm1026_data *data = adm1026_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)
{
	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
	int nr = sensor_attr->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct adm1026_data *data = i2c_get_clientdata(client);
	int val = simple_strtol(buf, NULL, 10);

	mutex_lock(&data->update_lock);
	data->in_min[nr] = INS_TO_REG(nr, val);
	adm1026_write_value(client, ADM1026_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)
{
	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
	int nr = sensor_attr->index;
	struct adm1026_data *data = adm1026_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)
{
	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
	int nr = sensor_attr->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct adm1026_data *data = i2c_get_clientdata(client);
	int val = simple_strtol(buf, NULL, 10);

	mutex_lock(&data->update_lock);
	data->in_max[nr] = INS_TO_REG(nr, val);
	adm1026_write_value(client, ADM1026_REG_IN_MAX[nr], data->in_max[nr]);
	mutex_unlock(&data->update_lock);
	return count;
}

#define 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);


in_reg(0);
in_reg(1);
in_reg(2);
in_reg(3);
in_reg(4);
in_reg(5);
in_reg(6);
in_reg(7);
in_reg(8);
in_reg(9);
in_reg(10);
in_reg(11);
in_reg(12);
in_reg(13);
in_reg(14);
in_reg(15);

static ssize_t show_in16(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct adm1026_data *data = adm1026_update_device(dev);
	return sprintf(buf, "%d\n", INS_FROM_REG(16, data->in[16]) -
		NEG12_OFFSET);
}
static ssize_t show_in16_min(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct adm1026_data *data = adm1026_update_device(dev);
	return sprintf(buf, "%d\n", INS_FROM_REG(16, data->in_min[16])
		- NEG12_OFFSET);
}
static ssize_t set_in16_min(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
	struct i2c_client *client = to_i2c_client(dev);
	struct adm1026_data *data = i2c_get_clientdata(client);
	int val = simple_strtol(buf, NULL, 10);

	mutex_lock(&data->update_lock);
	data->in_min[16] = INS_TO_REG(16, val + NEG12_OFFSET);
	adm1026_write_value(client, ADM1026_REG_IN_MIN[16], data->in_min[16]);
	mutex_unlock(&data->update_lock);
	return count;
}
static ssize_t show_in16_max(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct adm1026_data *data = adm1026_update_device(dev);
	return sprintf(buf, "%d\n", INS_FROM_REG(16, data->in_max[16])
			- NEG12_OFFSET);
}
static ssize_t set_in16_max(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
	struct i2c_client *client = to_i2c_client(dev);
	struct adm1026_data *data = i2c_get_clientdata(client);
	int val = simple_strtol(buf, NULL, 10);

	mutex_lock(&data->update_lock);
	data->in_max[16] = INS_TO_REG(16, val+NEG12_OFFSET);
	adm1026_write_value(client, ADM1026_REG_IN_MAX[16], data->in_max[16]);
	mutex_unlock(&data->update_lock);
	return count;
}

static SENSOR_DEVICE_ATTR(in16_input, S_IRUGO, show_in16, NULL, 16);
static SENSOR_DEVICE_ATTR(in16_min, S_IRUGO | S_IWUSR, show_in16_min, set_in16_min, 16);
static SENSOR_DEVICE_ATTR(in16_max, S_IRUGO | S_IWUSR, show_in16_max, set_in16_max, 16);




/* Now add fan read/write functions */

static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
		char *buf)
{
	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
	int nr = sensor_attr->index;
	struct adm1026_data *data = adm1026_update_device(dev);
	return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
		data->fan_div[nr]));
}
static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
		char *buf)
{
	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
	int nr = sensor_attr->index;
	struct adm1026_data *data = adm1026_update_device(dev);
	return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr],
		data->fan_div[nr]));
}
static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
		const char *buf, size_t count)
{
	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
	int nr = sensor_attr->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct adm1026_data *data = i2c_get_clientdata(client);
	int val = simple_strtol(buf, NULL, 10);

	mutex_lock(&data->update_lock);
	data->fan_min[nr] = FAN_TO_REG(val, data->fan_div[nr]);
	adm1026_write_value(client, ADM1026_REG_FAN_MIN(nr),
		data->fan_min[nr]);
	mutex_unlock(&data->update_lock);
	return count;
}

#define 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);

fan_offset(1);
fan_offset(2);
fan_offset(3);
fan_offset(4);
fan_offset(5);
fan_offset(6);
fan_offset(7);
fan_offset(8);

/* Adjust fan_min to account for new fan divisor */
static void fixup_fan_min(struct device *dev, int fan, int old_div)
{
	struct i2c_client *client = to_i2c_client(dev);
	struct adm1026_data *data = i2c_get_clientdata(client);
	int new_min;
	int new_div = data->fan_div[fan];

	/* 0 and 0xff are special.  Don't adjust them */
	if (data->fan_min[fan] == 0 || data->fan_min[fan] == 0xff) {
		return;
	}

	new_min = data->fan_min[fan] * old_div / new_div;
	new_min = SENSORS_LIMIT(new_min, 1, 254);
	data->fan_min[fan] = new_min;
	adm1026_write_value(client, ADM1026_REG_FAN_MIN(fan), new_min);
}

/* Now add fan_div read/write functions */
static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
		char *buf)
{
	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
	int nr = sensor_attr->index;
	struct adm1026_data *data = adm1026_update_device(dev);
	return sprintf(buf, "%d\n", data->fan_div[nr]);
}
static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
		const char *buf, size_t count)
{
	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
	int nr = sensor_attr->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct adm1026_data *data = i2c_get_clientdata(client);
	int val, orig_div, new_div;

	val = simple_strtol(buf, NULL, 10);
	new_div = DIV_TO_REG(val);

	mutex_lock(&data->update_lock);
	orig_div = data->fan_div[nr];
	data->fan_div[nr] = DIV_FROM_REG(new_div);

	if (nr < 4) { /* 0 <= nr < 4 */
		adm1026_write_value(client, ADM1026_REG_FAN_DIV_0_3,
				    (DIV_TO_REG(data->fan_div[0]) << 0) |
				    (DIV_TO_REG(data->fan_div[1]) << 2) |
				    (DIV_TO_REG(data->fan_div[2]) << 4) |
				    (DIV_TO_REG(data->fan_div[3]) << 6));
	} else { /* 3 < nr < 8 */
		adm1026_write_value(client, ADM1026_REG_FAN_DIV_4_7,
				    (DIV_TO_REG(data->fan_div[4]) << 0) |
				    (DIV_TO_REG(data->fan_div[5]) << 2) |
				    (DIV_TO_REG(data->fan_div[6]) << 4) |
				    (DIV_TO_REG(data->fan_div[7]) << 6));
	}

	if (data->fan_div[nr] != orig_div) {
		fixup_fan_min(dev, nr, orig_div);
	}
	mutex_unlock(&data->update_lock);
	return count;
}

#define fan_offset_div(offset)						\
static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR,		\
		show_fan_div, set_fan_div, offset - 1);

fan_offset_div(1);
fan_offset_div(2);
fan_offset_div(3);
fan_offset_div(4);
fan_offset_div(5);
fan_offset_div(6);
fan_offset_div(7);
fan_offset_div(8);

/* Temps */
static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
		char *buf)
{
	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
	int nr = sensor_attr->index;
	struct adm1026_data *data = adm1026_update_device(dev);
	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr]));
}
static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
		char *buf)
{
	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
	int nr = sensor_attr->index;
	struct adm1026_data *data = adm1026_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)
{
	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
	int nr = sensor_attr->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct adm1026_data *data = i2c_get_clientdata(client);
	int val = simple_strtol(buf, NULL, 10);

	mutex_lock(&data->update_lock);
	data->temp_min[nr] = TEMP_TO_REG(val);
	adm1026_write_value(client, ADM1026_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)
{
	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
	int nr = sensor_attr->index;
	struct adm1026_data *data = adm1026_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)
{
	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
	int nr = sensor_attr->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct adm1026_data *data = i2c_get_clientdata(client);
	int val = simple_strtol(buf, NULL, 10);

	mutex_lock(&data->update_lock);
	data->temp_max[nr] = TEMP_TO_REG(val);
	adm1026_write_value(client, ADM1026_REG_TEMP_MAX[nr],
		data->temp_max[nr]);
	mutex_unlock(&data->update_lock);
	return count;
}

#define 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);


temp_reg(1);
temp_reg(2);
temp_reg(3);

static ssize_t show_temp_offset(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
	int nr = sensor_attr->index;
	struct adm1026_data *data = adm1026_update_device(dev);
	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_offset[nr]));
}
static ssize_t set_temp_offset(struct device *dev,
		struct device_attribute *attr, const char *buf,
		size_t count)
{
	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
	int nr = sensor_attr->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct adm1026_data *data = i2c_get_clientdata(client);
	int val = simple_strtol(buf, NULL, 10);

	mutex_lock(&data->update_lock);
	data->temp_offset[nr] = TEMP_TO_REG(val);
	adm1026_write_value(client, ADM1026_REG_TEMP_OFFSET[nr],
		data->temp_offset[nr]);
	mutex_unlock(&data->update_lock);
	return count;
}

#define temp_offset_reg(offset)							\
static SENSOR_DEVICE_ATTR(temp##offset##_offset, S_IRUGO | S_IWUSR,		\
		show_temp_offset, set_temp_offset, offset - 1);

temp_offset_reg(1);
temp_offset_reg(2);
temp_offset_reg(3);

static ssize_t show_temp_auto_point1_temp_hyst(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
	int nr = sensor_attr->index;
	struct adm1026_data *data = adm1026_update_device(dev);
	return sprintf(buf, "%d\n", TEMP_FROM_REG(
		ADM1026_FAN_ACTIVATION_TEMP_HYST + data->temp_tmin[nr]));
}
static ssize_t show_temp_auto_point2_temp(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
	int nr = sensor_attr->index;
	struct adm1026_data *data = adm1026_update_device(dev);
	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_tmin[nr] +
		ADM1026_FAN_CONTROL_TEMP_RANGE));
}
static ssize_t show_temp_auto_point1_temp(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
	int nr = sensor_attr->index;
	struct adm1026_data *data = adm1026_update_device(dev);
	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_tmin[nr]));
}
static ssize_t set_temp_auto_point1_temp(struct device *dev,
		struct device_attribute *attr, const char *buf, size_t count)
{
	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
	int nr = sensor_attr->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct adm1026_data *data = i2c_get_clientdata(client);
	int val = simple_strtol(buf, NULL, 10);

	mutex_lock(&data->update_lock);
	data->temp_tmin[nr] = TEMP_TO_REG(val);
	adm1026_write_value(client, ADM1026_REG_TEMP_TMIN[nr],
		data->temp_tmin[nr]);
	mutex_unlock(&data->update_lock);
	return count;
}

#define temp_auto_point(offset)						\
static SENSOR_DEVICE_ATTR(temp##offset##_auto_point1_temp,		\
		S_IRUGO | S_IWUSR, show_temp_auto_point1_temp,		\
		set_temp_auto_point1_temp, offset - 1);			\
static SENSOR_DEVICE_ATTR(temp##offset##_auto_point1_temp_hyst, S_IRUGO,\
		show_temp_auto_point1_temp_hyst, NULL, offset - 1);	\
static SENSOR_DEVICE_ATTR(temp##offset##_auto_point2_temp, S_IRUGO,	\
		show_temp_auto_point2_temp, NULL, offset - 1);

temp_auto_point(1);
temp_auto_point(2);
temp_auto_point(3);

static ssize_t show_temp_crit_enable(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	struct adm1026_data *data = adm1026_update_device(dev);
	return sprintf(buf, "%d\n", (data->config1 & CFG1_THERM_HOT) >> 4);
}
static ssize_t set_temp_crit_enable(struct device *dev,
		struct device_attribute *attr, const char *buf, size_t count)
{
	struct i2c_client *client = to_i2c_client(dev);
	struct adm1026_data *data = i2c_get_clientdata(client);
	int val = simple_strtol(buf, NULL, 10);

	if ((val == 1) || (val==0)) {
		mutex_lock(&data->update_lock);
		data->config1 = (data->config1 & ~CFG1_THERM_HOT) | (val << 4);
		adm1026_write_value(client, ADM1026_REG_CONFIG1,
			data->config1);
		mutex_unlock(&data->update_lock);
	}
	return count;
}

#define temp_crit_enable(offset)				\
static DEVICE_ATTR(temp##offset##_crit_enable, S_IRUGO | S_IWUSR, \
	show_temp_crit_enable, set_temp_crit_enable);

temp_crit_enable(1);
temp_crit_enable(2);
temp_crit_enable(3);

static ssize_t show_temp_crit(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
	int nr = sensor_attr->index;
	struct adm1026_data *data = adm1026_update_device(dev);
	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit[nr]));
}
static ssize_t set_temp_crit(struct device *dev, struct device_attribute *attr,
		const char *buf, size_t count)
{
	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
	int nr = sensor_attr->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct adm1026_data *data = i2c_get_clientdata(client);
	int val = simple_strtol(buf, NULL, 10);

	mutex_lock(&data->update_lock);
	data->temp_crit[nr] = TEMP_TO_REG(val);
	adm1026_write_value(client, ADM1026_REG_TEMP_THERM[nr],
		data->temp_crit[nr]);
	mutex_unlock(&data->update_lock);
	return count;
}

#define temp_crit_reg(offset)						\
static SENSOR_DEVICE_ATTR(temp##offset##_crit, S_IRUGO | S_IWUSR,	\
		show_temp_crit, set_temp_crit, offset - 1);

temp_crit_reg(1);
temp_crit_reg(2);
temp_crit_reg(3);

static ssize_t show_analog_out_reg(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct adm1026_data *data = adm1026_update_device(dev);
	return sprintf(buf, "%d\n", DAC_FROM_REG(data->analog_out));
}
static ssize_t set_analog_out_reg(struct device *dev, struct device_attribute *attr, const char *buf,
		size_t count)
{
	struct i2c_client *client = to_i2c_client(dev);
	struct adm1026_data *data = i2c_get_clientdata(client);
	int val = simple_strtol(buf, NULL, 10);

	mutex_lock(&data->update_lock);
	data->analog_out = DAC_TO_REG(val);
	adm1026_write_value(client, ADM1026_REG_DAC, data->analog_out);
	mutex_unlock(&data->update_lock);
	return count;
}

static DEVICE_ATTR(analog_out, S_IRUGO | S_IWUSR, show_analog_out_reg,
	set_analog_out_reg);

static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct adm1026_data *data = adm1026_update_device(dev);
	int vid = (data->gpio >> 11) & 0x1f;

	dev_dbg(dev, "Setting VID from GPIO11-15.\n");
	return sprintf(buf, "%d\n", vid_from_reg(vid, data->vrm));
}
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 adm1026_data *data = dev_get_drvdata(dev);
	return sprintf(buf, "%d\n", data->vrm);
}
static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf,
		size_t count)
{
	struct adm1026_data *data = dev_get_drvdata(dev);

	data->vrm = simple_strtol(buf, NULL, 10);
	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 adm1026_data *data = adm1026_update_device(dev);
	return sprintf(buf, "%ld\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)
{
	struct adm1026_data *data = adm1026_update_device(dev);
	int bitnr = to_sensor_dev_attr(attr)->index;
	return sprintf(buf, "%ld\n", (data->alarms >> bitnr) & 1);
}

static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 0);
static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 1);
static SENSOR_DEVICE_ATTR(in9_alarm, S_IRUGO, show_alarm, NULL, 1);
static SENSOR_DEVICE_ATTR(in11_alarm, S_IRUGO, show_alarm, NULL, 2);
static SENSOR_DEVICE_ATTR(in12_alarm, S_IRUGO, show_alarm, NULL, 3);
static SENSOR_DEVICE_ATTR(in13_alarm, S_IRUGO, show_alarm, NULL, 4);
static SENSOR_DEVICE_ATTR(in14_alarm, S_IRUGO, show_alarm, NULL, 5);
static SENSOR_DEVICE_ATTR(in15_alarm, S_IRUGO, show_alarm, NULL, 6);
static SENSOR_DEVICE_ATTR(in16_alarm, S_IRUGO, show_alarm, NULL, 7);
static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 16);
static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 17);
static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 18);
static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 19);
static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 20);
static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL, 21);
static SENSOR_DEVICE_ATTR(fan7_alarm, S_IRUGO, show_alarm, NULL, 22);
static SENSOR_DEVICE_ATTR(fan8_alarm, S_IRUGO, show_alarm, NULL, 23);
static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 24);
static SENSOR_DEVICE_ATTR(in10_alarm, S_IRUGO, show_alarm, NULL, 25);
static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 26);

static ssize_t show_alarm_mask(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct adm1026_data *data = adm1026_update_device(dev);
	return sprintf(buf, "%ld\n", data->alarm_mask);
}
static ssize_t set_alarm_mask(struct device *dev, struct device_attribute *attr, const char *buf,
		size_t count)
{
	struct i2c_client *client = to_i2c_client(dev);
	struct adm1026_data *data = i2c_get_clientdata(client);
	int val = simple_strtol(buf, NULL, 10);
	unsigned long mask;

	mutex_lock(&data->update_lock);
	data->alarm_mask = val & 0x7fffffff;
	mask = data->alarm_mask
		| (data->gpio_mask & 0x10000 ? 0x80000000 : 0);
	adm1026_write_value(client, ADM1026_REG_MASK1,
		mask & 0xff);
	mask >>= 8;
	adm1026_write_value(client, ADM1026_REG_MASK2,
		mask & 0xff);
	mask >>= 8;
	adm1026_write_value(client, ADM1026_REG_MASK3,
		mask & 0xff);
	mask >>= 8;
	adm1026_write_value(client, ADM1026_REG_MASK4,
		mask & 0xff);
	mutex_unlock(&data->update_lock);
	return count;
}

static DEVICE_ATTR(alarm_mask, S_IRUGO | S_IWUSR, show_alarm_mask,
	set_alarm_mask);


static ssize_t show_gpio(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct adm1026_data *data = adm1026_update_device(dev);
	return sprintf(buf, "%ld\n", data->gpio);
}
static ssize_t set_gpio(struct device *dev, struct device_attribute *attr, const char *buf,
		size_t count)
{
	struct i2c_client *client = to_i2c_client(dev);
	struct adm1026_data *data = i2c_get_clientdata(client);
	int val = simple_strtol(buf, NULL, 10);
	long gpio;

	mutex_lock(&data->update_lock);
	data->gpio = val & 0x1ffff;
	gpio = data->gpio;
	adm1026_write_value(client, ADM1026_REG_GPIO_STATUS_0_7, gpio & 0xff);
	gpio >>= 8;
	adm1026_write_value(client, ADM1026_REG_GPIO_STATUS_8_15, gpio & 0xff);
	gpio = ((gpio >> 1) & 0x80) | (data->alarms >> 24 & 0x7f);
	adm1026_write_value(client, ADM1026_REG_STATUS4, gpio & 0xff);
	mutex_unlock(&data->update_lock);
	return count;
}

static DEVICE_ATTR(gpio, S_IRUGO | S_IWUSR, show_gpio, set_gpio);


static ssize_t show_gpio_mask(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct adm1026_data *data = adm1026_update_device(dev);
	return sprintf(buf, "%ld\n", data->gpio_mask);
}
static ssize_t set_gpio_mask(struct device *dev, struct device_attribute *attr, const char *buf,
		size_t count)
{
	struct i2c_client *client = to_i2c_client(dev);
	struct adm1026_data *data = i2c_get_clientdata(client);
	int val = simple_strtol(buf, NULL, 10);
	long mask;

	mutex_lock(&data->update_lock);
	data->gpio_mask = val & 0x1ffff;
	mask = data->gpio_mask;
	adm1026_write_value(client, ADM1026_REG_GPIO_MASK_0_7, mask & 0xff);
	mask >>= 8;
	adm1026_write_value(client, ADM1026_REG_GPIO_MASK_8_15, mask & 0xff);
	mask = ((mask >> 1) & 0x80) | (data->alarm_mask >> 24 & 0x7f);
	adm1026_write_value(client, ADM1026_REG_MASK1, mask & 0xff);
	mutex_unlock(&data->update_lock);
	return count;
}

static DEVICE_ATTR(gpio_mask, S_IRUGO | S_IWUSR, show_gpio_mask, set_gpio_mask);

static ssize_t show_pwm_reg(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct adm1026_data *data = adm1026_update_device(dev);
	return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm1.pwm));
}
static ssize_t set_pwm_reg(struct device *dev, struct device_attribute *attr, const char *buf,
		size_t count)
{
	struct i2c_client *client = to_i2c_client(dev);
	struct adm1026_data *data = i2c_get_clientdata(client);

	if (data->pwm1.enable == 1) {
		int val = simple_strtol(buf, NULL, 10);

		mutex_lock(&data->update_lock);
		data->pwm1.pwm = PWM_TO_REG(val);
		adm1026_write_value(client, ADM1026_REG_PWM, data->pwm1.pwm);
		mutex_unlock(&data->update_lock);
	}
	return count;
}
static ssize_t show_auto_pwm_min(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct adm1026_data *data = adm1026_update_device(dev);
	return sprintf(buf, "%d\n", data->pwm1.auto_pwm_min);
}
static ssize_t set_auto_pwm_min(struct device *dev, struct device_attribute *attr, const char *buf,
		size_t count)
{
	struct i2c_client *client = to_i2c_client(dev);
	struct adm1026_data *data = i2c_get_clientdata(client);
	int val = simple_strtol(buf, NULL, 10);

	mutex_lock(&data->update_lock);
	data->pwm1.auto_pwm_min = SENSORS_LIMIT(val, 0, 255);
	if (data->pwm1.enable == 2) { /* apply immediately */
		data->pwm1.pwm = PWM_TO_REG((data->pwm1.pwm & 0x0f) |
			PWM_MIN_TO_REG(data->pwm1.auto_pwm_min));
		adm1026_write_value(client, ADM1026_REG_PWM, data->pwm1.pwm);
	}
	mutex_unlock(&data->update_lock);
	return count;
}
static ssize_t show_auto_pwm_max(struct device *dev, struct device_attribute *attr, char *buf)
{
	return sprintf(buf, "%d\n", ADM1026_PWM_MAX);
}
static ssize_t show_pwm_enable(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct adm1026_data *data = adm1026_update_device(dev);
	return sprintf(buf, "%d\n", data->pwm1.enable);
}
static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr, const char *buf,
		size_t count)
{
	struct i2c_client *client = to_i2c_client(dev);
	struct adm1026_data *data = i2c_get_clientdata(client);
	int val = simple_strtol(buf, NULL, 10);
	int old_enable;

	if ((val >= 0) && (val < 3)) {
		mutex_lock(&data->update_lock);
		old_enable = data->pwm1.enable;
		data->pwm1.enable = val;
		data->config1 = (data->config1 & ~CFG1_PWM_AFC)
				| ((val == 2) ? CFG1_PWM_AFC : 0);
		adm1026_write_value(client, ADM1026_REG_CONFIG1,
			data->config1);
		if (val == 2) { /* apply pwm1_auto_pwm_min to pwm1 */
			data->pwm1.pwm = PWM_TO_REG((data->pwm1.pwm & 0x0f) |
				PWM_MIN_TO_REG(data->pwm1.auto_pwm_min));
			adm1026_write_value(client, ADM1026_REG_PWM,
				data->pwm1.pwm);
		} else if (!((old_enable == 1) && (val == 1))) {
			/* set pwm to safe value */
			data->pwm1.pwm = 255;
			adm1026_write_value(client, ADM1026_REG_PWM,
				data->pwm1.pwm);
		}
		mutex_unlock(&data->update_lock);
	}
	return count;
}

/* enable PWM fan control */
static DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm_reg, set_pwm_reg);
static DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm_reg, set_pwm_reg);
static DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm_reg, set_pwm_reg);
static DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR, show_pwm_enable,
	set_pwm_enable);
static DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR, show_pwm_enable,
	set_pwm_enable);
static DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR, show_pwm_enable,
	set_pwm_enable);
static DEVICE_ATTR(temp1_auto_point1_pwm, S_IRUGO | S_IWUSR,
	show_auto_pwm_min, set_auto_pwm_min);
static DEVICE_ATTR(temp2_auto_point1_pwm, S_IRUGO | S_IWUSR,
	show_auto_pwm_min, set_auto_pwm_min);
static DEVICE_ATTR(temp3_auto_point1_pwm, S_IRUGO | S_IWUSR,
	show_auto_pwm_min, set_auto_pwm_min);

static DEVICE_ATTR(temp1_auto_point2_pwm, S_IRUGO, show_auto_pwm_max, NULL);
static DEVICE_ATTR(temp2_auto_point2_pwm, S_IRUGO, show_auto_pwm_max, NULL);
static DEVICE_ATTR(temp3_auto_point2_pwm, S_IRUGO, show_auto_pwm_max, NULL);

static struct attribute *adm1026_attributes[] = {
	&sensor_dev_attr_in0_input.dev_attr.attr,
	&sensor_dev_attr_in0_max.dev_attr.attr,
	&sensor_dev_attr_in0_min.dev_attr.attr,
	&sensor_dev_attr_in0_alarm.dev_attr.attr,
	&sensor_dev_attr_in1_input.dev_attr.attr,
	&sensor_dev_attr_in1_max.dev_attr.attr,
	&sensor_dev_attr_in1_min.dev_attr.attr,
	&sensor_dev_attr_in1_alarm.dev_attr.attr,
	&sensor_dev_attr_in2_input.dev_attr.attr,
	&sensor_dev_attr_in2_max.dev_attr.attr,
	&sensor_dev_attr_in2_min.dev_attr.attr,
	&sensor_dev_attr_in2_alarm.dev_attr.attr,
	&sensor_dev_attr_in3_input.dev_attr.attr,
	&sensor_dev_attr_in3_max.dev_attr.attr,
	&sensor_dev_attr_in3_min.dev_attr.attr,
	&sensor_dev_attr_in3_alarm.dev_attr.attr,
	&sensor_dev_attr_in4_input.dev_attr.attr,
	&sensor_dev_attr_in4_max.dev_attr.attr,
	&sensor_dev_attr_in4_min.dev_attr.attr,
	&sensor_dev_attr_in4_alarm.dev_attr.attr,
	&sensor_dev_attr_in5_input.dev_attr.attr,
	&sensor_dev_attr_in5_max.dev_attr.attr,
	&sensor_dev_attr_in5_min.dev_attr.attr,
	&sensor_dev_attr_in5_alarm.dev_attr.attr,
	&sensor_dev_attr_in6_input.dev_attr.attr,
	&sensor_dev_attr_in6_max.dev_attr.attr,
	&sensor_dev_attr_in6_min.dev_attr.attr,
	&sensor_dev_attr_in6_alarm.dev_attr.attr,
	&sensor_dev_attr_in7_input.dev_attr.attr,
	&sensor_dev_attr_in7_max.dev_attr.attr,
	&sensor_dev_attr_in7_min.dev_attr.attr,
	&sensor_dev_attr_in7_alarm.dev_attr.attr,
	&sensor_dev_attr_in10_input.dev_attr.attr,
	&sensor_dev_attr_in10_max.dev_attr.attr,
	&sensor_dev_attr_in10_min.dev_attr.attr,
	&sensor_dev_attr_in10_alarm.dev_attr.attr,
	&sensor_dev_attr_in11_input.dev_attr.attr,
	&sensor_dev_attr_in11_max.dev_attr.attr,
	&sensor_dev_attr_in11_min.dev_attr.attr,
	&sensor_dev_attr_in11_alarm.dev_attr.attr,
	&sensor_dev_attr_in12_input.dev_attr.attr,
	&sensor_dev_attr_in12_max.dev_attr.attr,
	&sensor_dev_attr_in12_min.dev_attr.attr,
	&sensor_dev_attr_in12_alarm.dev_attr.attr,
	&sensor_dev_attr_in13_input.dev_attr.attr,
	&sensor_dev_attr_in13_max.dev_attr.attr,
	&sensor_dev_attr_in13_min.dev_attr.attr,
	&sensor_dev_attr_in13_alarm.dev_attr.attr,
	&sensor_dev_attr_in14_input.dev_attr.attr,
	&sensor_dev_attr_in14_max.dev_attr.attr,
	&sensor_dev_attr_in14_min.dev_attr.attr,
	&sensor_dev_attr_in14_alarm.dev_attr.attr,
	&sensor_dev_attr_in15_input.dev_attr.attr,
	&sensor_dev_attr_in15_max.dev_attr.attr,
	&sensor_dev_attr_in15_min.dev_attr.attr,
	&sensor_dev_attr_in15_alarm.dev_attr.attr,
	&sensor_dev_attr_in16_input.dev_attr.attr,
	&sensor_dev_attr_in16_max.dev_attr.attr,
	&sensor_dev_attr_in16_min.dev_attr.attr,
	&sensor_dev_attr_in16_alarm.dev_attr.attr,
	&sensor_dev_attr_fan1_input.dev_attr.attr,
	&sensor_dev_attr_fan1_div.dev_attr.attr,
	&sensor_dev_attr_fan1_min.dev_attr.attr,
	&sensor_dev_attr_fan1_alarm.dev_attr.attr,
	&sensor_dev_attr_fan2_input.dev_attr.attr,
	&sensor_dev_attr_fan2_div.dev_attr.attr,
	&sensor_dev_attr_fan2_min.dev_attr.attr,
	&sensor_dev_attr_fan2_alarm.dev_attr.attr,
	&sensor_dev_attr_fan3_input.dev_attr.attr,
	&sensor_dev_attr_fan3_div.dev_attr.attr,
	&sensor_dev_attr_fan3_min.dev_attr.attr,
	&sensor_dev_attr_fan3_alarm.dev_attr.attr,
	&sensor_dev_attr_fan4_input.dev_attr.attr,
	&sensor_dev_attr_fan4_div.dev_attr.attr,
	&sensor_dev_attr_fan4_min.dev_attr.attr,
	&sensor_dev_attr_fan4_alarm.dev_attr.attr,
	&sensor_dev_attr_fan5_input.dev_attr.attr,
	&sensor_dev_attr_fan5_div.dev_attr.attr,
	&sensor_dev_attr_fan5_min.dev_attr.attr,
	&sensor_dev_attr_fan5_alarm.dev_attr.attr,
	&sensor_dev_attr_fan6_input.dev_attr.attr,
	&sensor_dev_attr_fan6_div.dev_attr.attr,
	&sensor_dev_attr_fan6_min.dev_attr.attr,
	&sensor_dev_attr_fan6_alarm.dev_attr.attr,
	&sensor_dev_attr_fan7_input.dev_attr.attr,
	&sensor_dev_attr_fan7_div.dev_attr.attr,
	&sensor_dev_attr_fan7_min.dev_attr.attr,
	&sensor_dev_attr_fan7_alarm.dev_attr.attr,
	&sensor_dev_attr_fan8_input.dev_attr.attr,
	&sensor_dev_attr_fan8_div.dev_attr.attr,
	&sensor_dev_attr_fan8_min.dev_attr.attr,
	&sensor_dev_attr_fan8_alarm.dev_attr.attr,
	&sensor_dev_attr_temp1_input.dev_attr.attr,
	&sensor_dev_attr_temp1_max.dev_attr.attr,
	&sensor_dev_attr_temp1_min.dev_attr.attr,
	&sensor_dev_attr_temp1_alarm.dev_attr.attr,
	&sensor_dev_attr_temp2_input.dev_attr.attr,
	&sensor_dev_attr_temp2_max.dev_attr.attr,
	&sensor_dev_attr_temp2_min.dev_attr.attr,
	&sensor_dev_attr_temp2_alarm.dev_attr.attr,
	&sensor_dev_attr_temp1_offset.dev_attr.attr,
	&sensor_dev_attr_temp2_offset.dev_attr.attr,
	&sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
	&sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
	&sensor_dev_attr_temp1_auto_point1_temp_hyst.dev_attr.attr,
	&sensor_dev_attr_temp2_auto_point1_temp_hyst.dev_attr.attr,
	&sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
	&sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
	&sensor_dev_attr_temp1_crit.dev_attr.attr,
	&sensor_dev_attr_temp2_crit.dev_attr.attr,
	&dev_attr_temp1_crit_enable.attr,
	&dev_attr_temp2_crit_enable.attr,
	&dev_attr_cpu0_vid.attr,
	&dev_attr_vrm.attr,
	&dev_attr_alarms.attr,
	&dev_attr_alarm_mask.attr,
	&dev_attr_gpio.attr,
	&dev_attr_gpio_mask.attr,
	&dev_attr_pwm1.attr,
	&dev_attr_pwm2.attr,
	&dev_attr_pwm3.attr,
	&dev_attr_pwm1_enable.attr,
	&dev_attr_pwm2_enable.attr,
	&dev_attr_pwm3_enable.attr,
	&dev_attr_temp1_auto_point1_pwm.attr,
	&dev_attr_temp2_auto_point1_pwm.attr,
	&dev_attr_temp1_auto_point2_pwm.attr,
	&dev_attr_temp2_auto_point2_pwm.attr,
	&dev_attr_analog_out.attr,
	NULL
};

static const struct attribute_group adm1026_group = {
	.attrs = adm1026_attributes,
};

static struct attribute *adm1026_attributes_temp3[] = {
	&sensor_dev_attr_temp3_input.dev_attr.attr,
	&sensor_dev_attr_temp3_max.dev_attr.attr,
	&sensor_dev_attr_temp3_min.dev_attr.attr,
	&sensor_dev_attr_temp3_alarm.dev_attr.attr,
	&sensor_dev_attr_temp3_offset.dev_attr.attr,
	&sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
	&sensor_dev_attr_temp3_auto_point1_temp_hyst.dev_attr.attr,
	&sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
	&sensor_dev_attr_temp3_crit.dev_attr.attr,
	&dev_attr_temp3_crit_enable.attr,
	&dev_attr_temp3_auto_point1_pwm.attr,
	&dev_attr_temp3_auto_point2_pwm.attr,
	NULL
};

static const struct attribute_group adm1026_group_temp3 = {
	.attrs = adm1026_attributes_temp3,
};

static struct attribute *adm1026_attributes_in8_9[] = {
	&sensor_dev_attr_in8_input.dev_attr.attr,
	&sensor_dev_attr_in8_max.dev_attr.attr,
	&sensor_dev_attr_in8_min.dev_attr.attr,
	&sensor_dev_attr_in8_alarm.dev_attr.attr,
	&sensor_dev_attr_in9_input.dev_attr.attr,
	&sensor_dev_attr_in9_max.dev_attr.attr,
	&sensor_dev_attr_in9_min.dev_attr.attr,
	&sensor_dev_attr_in9_alarm.dev_attr.attr,
	NULL
};

static const struct attribute_group adm1026_group_in8_9 = {
	.attrs = adm1026_attributes_in8_9,
};

/* Return 0 if detection is successful, -ENODEV otherwise */
static int adm1026_detect(struct i2c_client *client,
			  struct i2c_board_info *info)
{
	struct i2c_adapter *adapter = client->adapter;
	int address = client->addr;
	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;
	};

	/* Now, we do the remaining detection. */

	company = adm1026_read_value(client, ADM1026_REG_COMPANY);
	verstep = adm1026_read_value(client, ADM1026_REG_VERSTEP);

	dev_dbg(&adapter->dev, "Detecting device at %d,0x%02x with"
		" COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
		i2c_adapter_id(client->adapter), client->addr,
		company, verstep);

	/* Determine the chip type. */
	dev_dbg(&adapter->dev, "Autodetecting device at %d,0x%02x...\n",
		i2c_adapter_id(adapter), address);
	if (company == ADM1026_COMPANY_ANALOG_DEV
	    && verstep == ADM1026_VERSTEP_ADM1026) {
		/* Analog Devices ADM1026 */
	} else if (company == ADM1026_COMPANY_ANALOG_DEV
		&& (verstep & 0xf0) == ADM1026_VERSTEP_GENERIC) {
		dev_err(&adapter->dev, "Unrecognized stepping "
			"0x%02x. Defaulting to ADM1026.\n", verstep);
	} else if ((verstep & 0xf0) == ADM1026_VERSTEP_GENERIC) {
		dev_err(&adapter->dev, "Found version/stepping "
			"0x%02x. Assuming generic ADM1026.\n",
			verstep);
	} else {
		dev_dbg(&adapter->dev, "Autodetection failed\n");
		/* Not an ADM1026... */
		return -ENODEV;
	}

	strlcpy(info->type, "adm1026", I2C_NAME_SIZE);

	return 0;
}

static int adm1026_probe(struct i2c_client *client,
			 const struct i2c_device_id *id)
{
	struct adm1026_data *data;
	int err;

	data = kzalloc(sizeof(struct adm1026_data), GFP_KERNEL);
	if (!data) {
		err = -ENOMEM;
		goto exit;
	}

	i2c_set_clientdata(client, data);
	mutex_init(&data->update_lock);

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

	/* Initialize the ADM1026 chip */
	adm1026_init_client(client);

	/* Register sysfs hooks */
	if ((err = sysfs_create_group(&client->dev.kobj, &adm1026_group)))
		goto exitfree;
	if (data->config1 & CFG1_AIN8_9)
		err = sysfs_create_group(&client->dev.kobj,
					 &adm1026_group_in8_9);
	else
		err = sysfs_create_group(&client->dev.kobj,
					 &adm1026_group_temp3);
	if (err)
		goto exitremove;

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

	return 0;

	/* Error out and cleanup code */
exitremove:
	sysfs_remove_group(&client->dev.kobj, &adm1026_group);
	if (data->config1 & CFG1_AIN8_9)
		sysfs_remove_group(&client->dev.kobj, &adm1026_group_in8_9);
	else
		sysfs_remove_group(&client->dev.kobj, &adm1026_group_temp3);
exitfree:
	kfree(data);
exit:
	return err;
}

static int adm1026_remove(struct i2c_client *client)
{
	struct adm1026_data *data = i2c_get_clientdata(client);
	hwmon_device_unregister(data->hwmon_dev);
	sysfs_remove_group(&client->dev.kobj, &adm1026_group);
	if (data->config1 & CFG1_AIN8_9)
		sysfs_remove_group(&client->dev.kobj, &adm1026_group_in8_9);
	else
		sysfs_remove_group(&client->dev.kobj, &adm1026_group_temp3);
	kfree(data);
	return 0;
}

static int __init sm_adm1026_init(void)
{
	return i2c_add_driver(&adm1026_driver);
}

static void __exit sm_adm1026_exit(void)
{
	i2c_del_driver(&adm1026_driver);
}

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, "
	      "Justin Thiessen <jthiessen@penguincomputing.com>");
MODULE_DESCRIPTION("ADM1026 driver");

module_init(sm_adm1026_init);
module_exit(sm_adm1026_exit);