adt7475.c 46.5 KB
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
/*
 * adt7475 - Thermal sensor driver for the ADT7475 chip and derivatives
 * Copyright (C) 2007-2008, Advanced Micro Devices, Inc.
 * Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net>
 * Copyright (C) 2008 Hans de Goede <hdegoede@redhat.com>
 * Copyright (C) 2009 Jean Delvare <jdelvare@suse.de>
 *
 * Derived from the lm83 driver by Jean Delvare
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.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/jiffies.h>

/* Indexes for the sysfs hooks */

#define INPUT		0
#define MIN		1
#define MAX		2
#define CONTROL		3
#define OFFSET		3
#define AUTOMIN		4
#define THERM		5
#define HYSTERSIS	6

/*
 * These are unique identifiers for the sysfs functions - unlike the
 * numbers above, these are not also indexes into an array
 */

#define ALARM		9
#define FAULT		10

/* 7475 Common Registers */

#define REG_DEVREV2		0x12	/* ADT7490 only */

#define REG_VTT			0x1E	/* ADT7490 only */
#define REG_EXTEND3		0x1F	/* ADT7490 only */

#define REG_VOLTAGE_BASE	0x20
#define REG_TEMP_BASE		0x25
#define REG_TACH_BASE		0x28
#define REG_PWM_BASE		0x30
#define REG_PWM_MAX_BASE	0x38

#define REG_DEVID		0x3D
#define REG_VENDID		0x3E
#define REG_DEVID2		0x3F

#define REG_STATUS1		0x41
#define REG_STATUS2		0x42

#define REG_VID			0x43	/* ADT7476 only */

#define REG_VOLTAGE_MIN_BASE	0x44
#define REG_VOLTAGE_MAX_BASE	0x45

#define REG_TEMP_MIN_BASE	0x4E
#define REG_TEMP_MAX_BASE	0x4F

#define REG_TACH_MIN_BASE	0x54

#define REG_PWM_CONFIG_BASE	0x5C

#define REG_TEMP_TRANGE_BASE	0x5F

#define REG_PWM_MIN_BASE	0x64

#define REG_TEMP_TMIN_BASE	0x67
#define REG_TEMP_THERM_BASE	0x6A

#define REG_REMOTE1_HYSTERSIS	0x6D
#define REG_REMOTE2_HYSTERSIS	0x6E

#define REG_TEMP_OFFSET_BASE	0x70

#define REG_CONFIG2		0x73

#define REG_EXTEND1		0x76
#define REG_EXTEND2		0x77

#define REG_CONFIG3		0x78
#define REG_CONFIG5		0x7C
#define REG_CONFIG4		0x7D

#define REG_STATUS4		0x81	/* ADT7490 only */

#define REG_VTT_MIN		0x84	/* ADT7490 only */
#define REG_VTT_MAX		0x86	/* ADT7490 only */

#define VID_VIDSEL		0x80	/* ADT7476 only */

#define CONFIG2_ATTN		0x20

#define CONFIG3_SMBALERT	0x01
#define CONFIG3_THERM		0x02

#define CONFIG4_PINFUNC		0x03
#define CONFIG4_MAXDUTY		0x08
#define CONFIG4_ATTN_IN10	0x30
#define CONFIG4_ATTN_IN43	0xC0

#define CONFIG5_TWOSCOMP	0x01
#define CONFIG5_TEMPOFFSET	0x02
#define CONFIG5_VIDGPIO		0x10	/* ADT7476 only */

/* ADT7475 Settings */

#define ADT7475_VOLTAGE_COUNT	5	/* Not counting Vtt */
#define ADT7475_TEMP_COUNT	3
#define ADT7475_TACH_COUNT	4
#define ADT7475_PWM_COUNT	3

/* Macro to read the registers */

#define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg))

/* Macros to easily index the registers */

#define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2))
#define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2))

#define PWM_REG(idx) (REG_PWM_BASE + (idx))
#define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx))
#define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx))
#define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx))

#define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx))
#define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2))
#define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2))

#define TEMP_REG(idx) (REG_TEMP_BASE + (idx))
#define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2))
#define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2))
#define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx))
#define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx))
#define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx))
#define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx))

static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };

enum chips { adt7473, adt7475, adt7476, adt7490 };

static const struct i2c_device_id adt7475_id[] = {
	{ "adt7473", adt7473 },
	{ "adt7475", adt7475 },
	{ "adt7476", adt7476 },
	{ "adt7490", adt7490 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, adt7475_id);

struct adt7475_data {
	struct device *hwmon_dev;
	struct mutex lock;

	unsigned long measure_updated;
	unsigned long limits_updated;
	char valid;

	u8 config4;
	u8 config5;
	u8 has_voltage;
	u8 bypass_attn;		/* Bypass voltage attenuator */
	u8 has_pwm2:1;
	u8 has_fan4:1;
	u8 has_vid:1;
	u32 alarms;
	u16 voltage[3][6];
	u16 temp[7][3];
	u16 tach[2][4];
	u8 pwm[4][3];
	u8 range[3];
	u8 pwmctl[3];
	u8 pwmchan[3];

	u8 vid;
	u8 vrm;
};

static struct i2c_driver adt7475_driver;
static struct adt7475_data *adt7475_update_device(struct device *dev);
static void adt7475_read_hystersis(struct i2c_client *client);
static void adt7475_read_pwm(struct i2c_client *client, int index);

/* Given a temp value, convert it to register value */

static inline u16 temp2reg(struct adt7475_data *data, long val)
{
	u16 ret;

	if (!(data->config5 & CONFIG5_TWOSCOMP)) {
		val = clamp_val(val, -64000, 191000);
		ret = (val + 64500) / 1000;
	} else {
		val = clamp_val(val, -128000, 127000);
		if (val < -500)
			ret = (256500 + val) / 1000;
		else
			ret = (val + 500) / 1000;
	}

	return ret << 2;
}

/* Given a register value, convert it to a real temp value */

static inline int reg2temp(struct adt7475_data *data, u16 reg)
{
	if (data->config5 & CONFIG5_TWOSCOMP) {
		if (reg >= 512)
			return (reg - 1024) * 250;
		else
			return reg * 250;
	} else
		return (reg - 256) * 250;
}

static inline int tach2rpm(u16 tach)
{
	if (tach == 0 || tach == 0xFFFF)
		return 0;

	return (90000 * 60) / tach;
}

static inline u16 rpm2tach(unsigned long rpm)
{
	if (rpm == 0)
		return 0;

	return clamp_val((90000 * 60) / rpm, 1, 0xFFFF);
}

/* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */
static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 1][2] = {
	{ 45, 94 },	/* +2.5V */
	{ 175, 525 },	/* Vccp */
	{ 68, 71 },	/* Vcc */
	{ 93, 47 },	/* +5V */
	{ 120, 20 },	/* +12V */
	{ 45, 45 },	/* Vtt */
};

static inline int reg2volt(int channel, u16 reg, u8 bypass_attn)
{
	const int *r = adt7473_in_scaling[channel];

	if (bypass_attn & (1 << channel))
		return DIV_ROUND_CLOSEST(reg * 2250, 1024);
	return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024);
}

static inline u16 volt2reg(int channel, long volt, u8 bypass_attn)
{
	const int *r = adt7473_in_scaling[channel];
	long reg;

	if (bypass_attn & (1 << channel))
		reg = (volt * 1024) / 2250;
	else
		reg = (volt * r[1] * 1024) / ((r[0] + r[1]) * 2250);
	return clamp_val(reg, 0, 1023) & (0xff << 2);
}

static u16 adt7475_read_word(struct i2c_client *client, int reg)
{
	u16 val;

	val = i2c_smbus_read_byte_data(client, reg);
	val |= (i2c_smbus_read_byte_data(client, reg + 1) << 8);

	return val;
}

static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)
{
	i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
	i2c_smbus_write_byte_data(client, reg, val & 0xFF);
}

/*
 * Find the nearest value in a table - used for pwm frequency and
 * auto temp range
 */
static int find_nearest(long val, const int *array, int size)
{
	int i;

	if (val < array[0])
		return 0;

	if (val > array[size - 1])
		return size - 1;

	for (i = 0; i < size - 1; i++) {
		int a, b;

		if (val > array[i + 1])
			continue;

		a = val - array[i];
		b = array[i + 1] - val;

		return (a <= b) ? i : i + 1;
	}

	return 0;
}

static ssize_t show_voltage(struct device *dev, struct device_attribute *attr,
			    char *buf)
{
	struct adt7475_data *data = adt7475_update_device(dev);
	struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
	unsigned short val;

	switch (sattr->nr) {
	case ALARM:
		return sprintf(buf, "%d\n",
			       (data->alarms >> sattr->index) & 1);
	default:
		val = data->voltage[sattr->nr][sattr->index];
		return sprintf(buf, "%d\n",
			       reg2volt(sattr->index, val, data->bypass_attn));
	}
}

static ssize_t set_voltage(struct device *dev, struct device_attribute *attr,
			   const char *buf, size_t count)
{

	struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
	struct i2c_client *client = to_i2c_client(dev);
	struct adt7475_data *data = i2c_get_clientdata(client);
	unsigned char reg;
	long val;

	if (kstrtol(buf, 10, &val))
		return -EINVAL;

	mutex_lock(&data->lock);

	data->voltage[sattr->nr][sattr->index] =
				volt2reg(sattr->index, val, data->bypass_attn);

	if (sattr->index < ADT7475_VOLTAGE_COUNT) {
		if (sattr->nr == MIN)
			reg = VOLTAGE_MIN_REG(sattr->index);
		else
			reg = VOLTAGE_MAX_REG(sattr->index);
	} else {
		if (sattr->nr == MIN)
			reg = REG_VTT_MIN;
		else
			reg = REG_VTT_MAX;
	}

	i2c_smbus_write_byte_data(client, reg,
				  data->voltage[sattr->nr][sattr->index] >> 2);
	mutex_unlock(&data->lock);

	return count;
}

static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
			 char *buf)
{
	struct adt7475_data *data = adt7475_update_device(dev);
	struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
	int out;

	switch (sattr->nr) {
	case HYSTERSIS:
		mutex_lock(&data->lock);
		out = data->temp[sattr->nr][sattr->index];
		if (sattr->index != 1)
			out = (out >> 4) & 0xF;
		else
			out = (out & 0xF);
		/*
		 * Show the value as an absolute number tied to
		 * THERM
		 */
		out = reg2temp(data, data->temp[THERM][sattr->index]) -
			out * 1000;
		mutex_unlock(&data->lock);
		break;

	case OFFSET:
		/*
		 * Offset is always 2's complement, regardless of the
		 * setting in CONFIG5
		 */
		mutex_lock(&data->lock);
		out = (s8)data->temp[sattr->nr][sattr->index];
		if (data->config5 & CONFIG5_TEMPOFFSET)
			out *= 1000;
		else
			out *= 500;
		mutex_unlock(&data->lock);
		break;

	case ALARM:
		out = (data->alarms >> (sattr->index + 4)) & 1;
		break;

	case FAULT:
		/* Note - only for remote1 and remote2 */
		out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000));
		break;

	default:
		/* All other temp values are in the configured format */
		out = reg2temp(data, data->temp[sattr->nr][sattr->index]);
	}

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

static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
			const char *buf, size_t count)
{
	struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
	struct i2c_client *client = to_i2c_client(dev);
	struct adt7475_data *data = i2c_get_clientdata(client);
	unsigned char reg = 0;
	u8 out;
	int temp;
	long val;

	if (kstrtol(buf, 10, &val))
		return -EINVAL;

	mutex_lock(&data->lock);

	/* We need the config register in all cases for temp <-> reg conv. */
	data->config5 = adt7475_read(REG_CONFIG5);

	switch (sattr->nr) {
	case OFFSET:
		if (data->config5 & CONFIG5_TEMPOFFSET) {
			val = clamp_val(val, -63000, 127000);
			out = data->temp[OFFSET][sattr->index] = val / 1000;
		} else {
			val = clamp_val(val, -63000, 64000);
			out = data->temp[OFFSET][sattr->index] = val / 500;
		}
		break;

	case HYSTERSIS:
		/*
		 * The value will be given as an absolute value, turn it
		 * into an offset based on THERM
		 */

		/* Read fresh THERM and HYSTERSIS values from the chip */
		data->temp[THERM][sattr->index] =
			adt7475_read(TEMP_THERM_REG(sattr->index)) << 2;
		adt7475_read_hystersis(client);

		temp = reg2temp(data, data->temp[THERM][sattr->index]);
		val = clamp_val(val, temp - 15000, temp);
		val = (temp - val) / 1000;

		if (sattr->index != 1) {
			data->temp[HYSTERSIS][sattr->index] &= 0xF0;
			data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4;
		} else {
			data->temp[HYSTERSIS][sattr->index] &= 0x0F;
			data->temp[HYSTERSIS][sattr->index] |= (val & 0xF);
		}

		out = data->temp[HYSTERSIS][sattr->index];
		break;

	default:
		data->temp[sattr->nr][sattr->index] = temp2reg(data, val);

		/*
		 * We maintain an extra 2 digits of precision for simplicity
		 * - shift those back off before writing the value
		 */
		out = (u8) (data->temp[sattr->nr][sattr->index] >> 2);
	}

	switch (sattr->nr) {
	case MIN:
		reg = TEMP_MIN_REG(sattr->index);
		break;
	case MAX:
		reg = TEMP_MAX_REG(sattr->index);
		break;
	case OFFSET:
		reg = TEMP_OFFSET_REG(sattr->index);
		break;
	case AUTOMIN:
		reg = TEMP_TMIN_REG(sattr->index);
		break;
	case THERM:
		reg = TEMP_THERM_REG(sattr->index);
		break;
	case HYSTERSIS:
		if (sattr->index != 2)
			reg = REG_REMOTE1_HYSTERSIS;
		else
			reg = REG_REMOTE2_HYSTERSIS;

		break;
	}

	i2c_smbus_write_byte_data(client, reg, out);

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

/*
 * Table of autorange values - the user will write the value in millidegrees,
 * and we'll convert it
 */
static const int autorange_table[] = {
	2000, 2500, 3330, 4000, 5000, 6670, 8000,
	10000, 13330, 16000, 20000, 26670, 32000, 40000,
	53330, 80000
};

static ssize_t show_point2(struct device *dev, struct device_attribute *attr,
			   char *buf)
{
	struct adt7475_data *data = adt7475_update_device(dev);
	struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
	int out, val;

	mutex_lock(&data->lock);
	out = (data->range[sattr->index] >> 4) & 0x0F;
	val = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
	mutex_unlock(&data->lock);

	return sprintf(buf, "%d\n", val + autorange_table[out]);
}

static ssize_t set_point2(struct device *dev, struct device_attribute *attr,
			  const char *buf, size_t count)
{
	struct i2c_client *client = to_i2c_client(dev);
	struct adt7475_data *data = i2c_get_clientdata(client);
	struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
	int temp;
	long val;

	if (kstrtol(buf, 10, &val))
		return -EINVAL;

	mutex_lock(&data->lock);

	/* Get a fresh copy of the needed registers */
	data->config5 = adt7475_read(REG_CONFIG5);
	data->temp[AUTOMIN][sattr->index] =
		adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2;
	data->range[sattr->index] =
		adt7475_read(TEMP_TRANGE_REG(sattr->index));

	/*
	 * The user will write an absolute value, so subtract the start point
	 * to figure the range
	 */
	temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
	val = clamp_val(val, temp + autorange_table[0],
		temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]);
	val -= temp;

	/* Find the nearest table entry to what the user wrote */
	val = find_nearest(val, autorange_table, ARRAY_SIZE(autorange_table));

	data->range[sattr->index] &= ~0xF0;
	data->range[sattr->index] |= val << 4;

	i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
				  data->range[sattr->index]);

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

static ssize_t show_tach(struct device *dev, struct device_attribute *attr,
			 char *buf)
{
	struct adt7475_data *data = adt7475_update_device(dev);
	struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
	int out;

	if (sattr->nr == ALARM)
		out = (data->alarms >> (sattr->index + 10)) & 1;
	else
		out = tach2rpm(data->tach[sattr->nr][sattr->index]);

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

static ssize_t set_tach(struct device *dev, struct device_attribute *attr,
			const char *buf, size_t count)
{

	struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
	struct i2c_client *client = to_i2c_client(dev);
	struct adt7475_data *data = i2c_get_clientdata(client);
	unsigned long val;

	if (kstrtoul(buf, 10, &val))
		return -EINVAL;

	mutex_lock(&data->lock);

	data->tach[MIN][sattr->index] = rpm2tach(val);

	adt7475_write_word(client, TACH_MIN_REG(sattr->index),
			   data->tach[MIN][sattr->index]);

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

static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
			char *buf)
{
	struct adt7475_data *data = adt7475_update_device(dev);
	struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);

	return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);
}

static ssize_t show_pwmchan(struct device *dev, struct device_attribute *attr,
			    char *buf)
{
	struct adt7475_data *data = adt7475_update_device(dev);
	struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);

	return sprintf(buf, "%d\n", data->pwmchan[sattr->index]);
}

static ssize_t show_pwmctrl(struct device *dev, struct device_attribute *attr,
			    char *buf)
{
	struct adt7475_data *data = adt7475_update_device(dev);
	struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);

	return sprintf(buf, "%d\n", data->pwmctl[sattr->index]);
}

static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
		       const char *buf, size_t count)
{

	struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
	struct i2c_client *client = to_i2c_client(dev);
	struct adt7475_data *data = i2c_get_clientdata(client);
	unsigned char reg = 0;
	long val;

	if (kstrtol(buf, 10, &val))
		return -EINVAL;

	mutex_lock(&data->lock);

	switch (sattr->nr) {
	case INPUT:
		/* Get a fresh value for CONTROL */
		data->pwm[CONTROL][sattr->index] =
			adt7475_read(PWM_CONFIG_REG(sattr->index));

		/*
		 * If we are not in manual mode, then we shouldn't allow
		 * the user to set the pwm speed
		 */
		if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) {
			mutex_unlock(&data->lock);
			return count;
		}

		reg = PWM_REG(sattr->index);
		break;

	case MIN:
		reg = PWM_MIN_REG(sattr->index);
		break;

	case MAX:
		reg = PWM_MAX_REG(sattr->index);
		break;
	}

	data->pwm[sattr->nr][sattr->index] = clamp_val(val, 0, 0xFF);
	i2c_smbus_write_byte_data(client, reg,
				  data->pwm[sattr->nr][sattr->index]);

	mutex_unlock(&data->lock);

	return count;
}

/* Called by set_pwmctrl and set_pwmchan */

static int hw_set_pwm(struct i2c_client *client, int index,
		      unsigned int pwmctl, unsigned int pwmchan)
{
	struct adt7475_data *data = i2c_get_clientdata(client);
	long val = 0;

	switch (pwmctl) {
	case 0:
		val = 0x03;	/* Run at full speed */
		break;
	case 1:
		val = 0x07;	/* Manual mode */
		break;
	case 2:
		switch (pwmchan) {
		case 1:
			/* Remote1 controls PWM */
			val = 0x00;
			break;
		case 2:
			/* local controls PWM */
			val = 0x01;
			break;
		case 4:
			/* remote2 controls PWM */
			val = 0x02;
			break;
		case 6:
			/* local/remote2 control PWM */
			val = 0x05;
			break;
		case 7:
			/* All three control PWM */
			val = 0x06;
			break;
		default:
			return -EINVAL;
		}
		break;
	default:
		return -EINVAL;
	}

	data->pwmctl[index] = pwmctl;
	data->pwmchan[index] = pwmchan;

	data->pwm[CONTROL][index] &= ~0xE0;
	data->pwm[CONTROL][index] |= (val & 7) << 5;

	i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
				  data->pwm[CONTROL][index]);

	return 0;
}

static ssize_t set_pwmchan(struct device *dev, struct device_attribute *attr,
			   const char *buf, size_t count)
{
	struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
	struct i2c_client *client = to_i2c_client(dev);
	struct adt7475_data *data = i2c_get_clientdata(client);
	int r;
	long val;

	if (kstrtol(buf, 10, &val))
		return -EINVAL;

	mutex_lock(&data->lock);
	/* Read Modify Write PWM values */
	adt7475_read_pwm(client, sattr->index);
	r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val);
	if (r)
		count = r;
	mutex_unlock(&data->lock);

	return count;
}

static ssize_t set_pwmctrl(struct device *dev, struct device_attribute *attr,
			   const char *buf, size_t count)
{
	struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
	struct i2c_client *client = to_i2c_client(dev);
	struct adt7475_data *data = i2c_get_clientdata(client);
	int r;
	long val;

	if (kstrtol(buf, 10, &val))
		return -EINVAL;

	mutex_lock(&data->lock);
	/* Read Modify Write PWM values */
	adt7475_read_pwm(client, sattr->index);
	r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]);
	if (r)
		count = r;
	mutex_unlock(&data->lock);

	return count;
}

/* List of frequencies for the PWM */
static const int pwmfreq_table[] = {
	11, 14, 22, 29, 35, 44, 58, 88
};

static ssize_t show_pwmfreq(struct device *dev, struct device_attribute *attr,
			    char *buf)
{
	struct adt7475_data *data = adt7475_update_device(dev);
	struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);

	return sprintf(buf, "%d\n",
		       pwmfreq_table[data->range[sattr->index] & 7]);
}

static ssize_t set_pwmfreq(struct device *dev, struct device_attribute *attr,
			   const char *buf, size_t count)
{
	struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
	struct i2c_client *client = to_i2c_client(dev);
	struct adt7475_data *data = i2c_get_clientdata(client);
	int out;
	long val;

	if (kstrtol(buf, 10, &val))
		return -EINVAL;

	out = find_nearest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));

	mutex_lock(&data->lock);

	data->range[sattr->index] =
		adt7475_read(TEMP_TRANGE_REG(sattr->index));
	data->range[sattr->index] &= ~7;
	data->range[sattr->index] |= out;

	i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
				  data->range[sattr->index]);

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

static ssize_t show_pwm_at_crit(struct device *dev,
				struct device_attribute *devattr, char *buf)
{
	struct adt7475_data *data = adt7475_update_device(dev);
	return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));
}

static ssize_t set_pwm_at_crit(struct device *dev,
			       struct device_attribute *devattr,
			       const char *buf, size_t count)
{
	struct i2c_client *client = to_i2c_client(dev);
	struct adt7475_data *data = i2c_get_clientdata(client);
	long val;

	if (kstrtol(buf, 10, &val))
		return -EINVAL;
	if (val != 0 && val != 1)
		return -EINVAL;

	mutex_lock(&data->lock);
	data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);
	if (val)
		data->config4 |= CONFIG4_MAXDUTY;
	else
		data->config4 &= ~CONFIG4_MAXDUTY;
	i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);
	mutex_unlock(&data->lock);

	return count;
}

static ssize_t show_vrm(struct device *dev, struct device_attribute *devattr,
			char *buf)
{
	struct adt7475_data *data = dev_get_drvdata(dev);
	return sprintf(buf, "%d\n", (int)data->vrm);
}

static ssize_t set_vrm(struct device *dev, struct device_attribute *devattr,
		       const char *buf, size_t count)
{
	struct adt7475_data *data = dev_get_drvdata(dev);
	long val;

	if (kstrtol(buf, 10, &val))
		return -EINVAL;
	if (val < 0 || val > 255)
		return -EINVAL;
	data->vrm = val;

	return count;
}

static ssize_t show_vid(struct device *dev, struct device_attribute *devattr,
			char *buf)
{
	struct adt7475_data *data = adt7475_update_device(dev);
	return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
}

static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_voltage, NULL, INPUT, 0);
static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_voltage,
			    set_voltage, MAX, 0);
static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_voltage,
			    set_voltage, MIN, 0);
static SENSOR_DEVICE_ATTR_2(in0_alarm, S_IRUGO, show_voltage, NULL, ALARM, 0);
static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_voltage, NULL, INPUT, 1);
static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_voltage,
			    set_voltage, MAX, 1);
static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_voltage,
			    set_voltage, MIN, 1);
static SENSOR_DEVICE_ATTR_2(in1_alarm, S_IRUGO, show_voltage, NULL, ALARM, 1);
static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_voltage, NULL, INPUT, 2);
static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_voltage,
			    set_voltage, MAX, 2);
static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_voltage,
			    set_voltage, MIN, 2);
static SENSOR_DEVICE_ATTR_2(in2_alarm, S_IRUGO, show_voltage, NULL, ALARM, 2);
static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_voltage, NULL, INPUT, 3);
static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_voltage,
			    set_voltage, MAX, 3);
static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_voltage,
			    set_voltage, MIN, 3);
static SENSOR_DEVICE_ATTR_2(in3_alarm, S_IRUGO, show_voltage, NULL, ALARM, 3);
static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_voltage, NULL, INPUT, 4);
static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_voltage,
			    set_voltage, MAX, 4);
static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_voltage,
			    set_voltage, MIN, 4);
static SENSOR_DEVICE_ATTR_2(in4_alarm, S_IRUGO, show_voltage, NULL, ALARM, 8);
static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_voltage, NULL, INPUT, 5);
static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_voltage,
			    set_voltage, MAX, 5);
static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_voltage,
			    set_voltage, MIN, 5);
static SENSOR_DEVICE_ATTR_2(in5_alarm, S_IRUGO, show_voltage, NULL, ALARM, 31);
static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, INPUT, 0);
static SENSOR_DEVICE_ATTR_2(temp1_alarm, S_IRUGO, show_temp, NULL, ALARM, 0);
static SENSOR_DEVICE_ATTR_2(temp1_fault, S_IRUGO, show_temp, NULL, FAULT, 0);
static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
			    MAX, 0);
static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
			    MIN, 0);
static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
			    set_temp, OFFSET, 0);
static SENSOR_DEVICE_ATTR_2(temp1_auto_point1_temp, S_IRUGO | S_IWUSR,
			    show_temp, set_temp, AUTOMIN, 0);
static SENSOR_DEVICE_ATTR_2(temp1_auto_point2_temp, S_IRUGO | S_IWUSR,
			    show_point2, set_point2, 0, 0);
static SENSOR_DEVICE_ATTR_2(temp1_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
			    THERM, 0);
static SENSOR_DEVICE_ATTR_2(temp1_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
			    set_temp, HYSTERSIS, 0);
static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, INPUT, 1);
static SENSOR_DEVICE_ATTR_2(temp2_alarm, S_IRUGO, show_temp, NULL, ALARM, 1);
static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
			    MAX, 1);
static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
			    MIN, 1);
static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
			    set_temp, OFFSET, 1);
static SENSOR_DEVICE_ATTR_2(temp2_auto_point1_temp, S_IRUGO | S_IWUSR,
			    show_temp, set_temp, AUTOMIN, 1);
static SENSOR_DEVICE_ATTR_2(temp2_auto_point2_temp, S_IRUGO | S_IWUSR,
			    show_point2, set_point2, 0, 1);
static SENSOR_DEVICE_ATTR_2(temp2_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
			    THERM, 1);
static SENSOR_DEVICE_ATTR_2(temp2_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
			    set_temp, HYSTERSIS, 1);
static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, INPUT, 2);
static SENSOR_DEVICE_ATTR_2(temp3_alarm, S_IRUGO, show_temp, NULL, ALARM, 2);
static SENSOR_DEVICE_ATTR_2(temp3_fault, S_IRUGO, show_temp, NULL, FAULT, 2);
static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
			    MAX, 2);
static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
			    MIN, 2);
static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
			    set_temp, OFFSET, 2);
static SENSOR_DEVICE_ATTR_2(temp3_auto_point1_temp, S_IRUGO | S_IWUSR,
			    show_temp, set_temp, AUTOMIN, 2);
static SENSOR_DEVICE_ATTR_2(temp3_auto_point2_temp, S_IRUGO | S_IWUSR,
			    show_point2, set_point2, 0, 2);
static SENSOR_DEVICE_ATTR_2(temp3_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
			    THERM, 2);
static SENSOR_DEVICE_ATTR_2(temp3_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
			    set_temp, HYSTERSIS, 2);
static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_tach, NULL, INPUT, 0);
static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
			    MIN, 0);
static SENSOR_DEVICE_ATTR_2(fan1_alarm, S_IRUGO, show_tach, NULL, ALARM, 0);
static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_tach, NULL, INPUT, 1);
static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
			    MIN, 1);
static SENSOR_DEVICE_ATTR_2(fan2_alarm, S_IRUGO, show_tach, NULL, ALARM, 1);
static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_tach, NULL, INPUT, 2);
static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
			    MIN, 2);
static SENSOR_DEVICE_ATTR_2(fan3_alarm, S_IRUGO, show_tach, NULL, ALARM, 2);
static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_tach, NULL, INPUT, 3);
static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
			    MIN, 3);
static SENSOR_DEVICE_ATTR_2(fan4_alarm, S_IRUGO, show_tach, NULL, ALARM, 3);
static SENSOR_DEVICE_ATTR_2(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
			    0);
static SENSOR_DEVICE_ATTR_2(pwm1_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
			    set_pwmfreq, INPUT, 0);
static SENSOR_DEVICE_ATTR_2(pwm1_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
			    set_pwmctrl, INPUT, 0);
static SENSOR_DEVICE_ATTR_2(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
			    show_pwmchan, set_pwmchan, INPUT, 0);
static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
			    set_pwm, MIN, 0);
static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
			    set_pwm, MAX, 0);
static SENSOR_DEVICE_ATTR_2(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
			    1);
static SENSOR_DEVICE_ATTR_2(pwm2_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
			    set_pwmfreq, INPUT, 1);
static SENSOR_DEVICE_ATTR_2(pwm2_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
			    set_pwmctrl, INPUT, 1);
static SENSOR_DEVICE_ATTR_2(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
			    show_pwmchan, set_pwmchan, INPUT, 1);
static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
			    set_pwm, MIN, 1);
static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
			    set_pwm, MAX, 1);
static SENSOR_DEVICE_ATTR_2(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
			    2);
static SENSOR_DEVICE_ATTR_2(pwm3_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
			    set_pwmfreq, INPUT, 2);
static SENSOR_DEVICE_ATTR_2(pwm3_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
			    set_pwmctrl, INPUT, 2);
static SENSOR_DEVICE_ATTR_2(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
			    show_pwmchan, set_pwmchan, INPUT, 2);
static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
			    set_pwm, MIN, 2);
static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
			    set_pwm, MAX, 2);

/* Non-standard name, might need revisiting */
static DEVICE_ATTR(pwm_use_point2_pwm_at_crit, S_IWUSR | S_IRUGO,
		   show_pwm_at_crit, set_pwm_at_crit);

static DEVICE_ATTR(vrm, S_IWUSR | S_IRUGO, show_vrm, set_vrm);
static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);

static struct attribute *adt7475_attrs[] = {
	&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_temp1_input.dev_attr.attr,
	&sensor_dev_attr_temp1_alarm.dev_attr.attr,
	&sensor_dev_attr_temp1_fault.dev_attr.attr,
	&sensor_dev_attr_temp1_max.dev_attr.attr,
	&sensor_dev_attr_temp1_min.dev_attr.attr,
	&sensor_dev_attr_temp1_offset.dev_attr.attr,
	&sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
	&sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
	&sensor_dev_attr_temp1_crit.dev_attr.attr,
	&sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
	&sensor_dev_attr_temp2_input.dev_attr.attr,
	&sensor_dev_attr_temp2_alarm.dev_attr.attr,
	&sensor_dev_attr_temp2_max.dev_attr.attr,
	&sensor_dev_attr_temp2_min.dev_attr.attr,
	&sensor_dev_attr_temp2_offset.dev_attr.attr,
	&sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
	&sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
	&sensor_dev_attr_temp2_crit.dev_attr.attr,
	&sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
	&sensor_dev_attr_temp3_input.dev_attr.attr,
	&sensor_dev_attr_temp3_fault.dev_attr.attr,
	&sensor_dev_attr_temp3_alarm.dev_attr.attr,
	&sensor_dev_attr_temp3_max.dev_attr.attr,
	&sensor_dev_attr_temp3_min.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_point2_temp.dev_attr.attr,
	&sensor_dev_attr_temp3_crit.dev_attr.attr,
	&sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
	&sensor_dev_attr_fan1_input.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_min.dev_attr.attr,
	&sensor_dev_attr_fan2_alarm.dev_attr.attr,
	&sensor_dev_attr_fan3_input.dev_attr.attr,
	&sensor_dev_attr_fan3_min.dev_attr.attr,
	&sensor_dev_attr_fan3_alarm.dev_attr.attr,
	&sensor_dev_attr_pwm1.dev_attr.attr,
	&sensor_dev_attr_pwm1_freq.dev_attr.attr,
	&sensor_dev_attr_pwm1_enable.dev_attr.attr,
	&sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
	&sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
	&sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
	&sensor_dev_attr_pwm3.dev_attr.attr,
	&sensor_dev_attr_pwm3_freq.dev_attr.attr,
	&sensor_dev_attr_pwm3_enable.dev_attr.attr,
	&sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
	&sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
	&sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
	&dev_attr_pwm_use_point2_pwm_at_crit.attr,
	NULL,
};

static struct attribute *fan4_attrs[] = {
	&sensor_dev_attr_fan4_input.dev_attr.attr,
	&sensor_dev_attr_fan4_min.dev_attr.attr,
	&sensor_dev_attr_fan4_alarm.dev_attr.attr,
	NULL
};

static struct attribute *pwm2_attrs[] = {
	&sensor_dev_attr_pwm2.dev_attr.attr,
	&sensor_dev_attr_pwm2_freq.dev_attr.attr,
	&sensor_dev_attr_pwm2_enable.dev_attr.attr,
	&sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
	&sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
	&sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
	NULL
};

static struct attribute *in0_attrs[] = {
	&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,
	NULL
};

static struct attribute *in3_attrs[] = {
	&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,
	NULL
};

static struct attribute *in4_attrs[] = {
	&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,
	NULL
};

static struct attribute *in5_attrs[] = {
	&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,
	NULL
};

static struct attribute *vid_attrs[] = {
	&dev_attr_cpu0_vid.attr,
	&dev_attr_vrm.attr,
	NULL
};

static struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
static struct attribute_group fan4_attr_group = { .attrs = fan4_attrs };
static struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs };
static struct attribute_group in0_attr_group = { .attrs = in0_attrs };
static struct attribute_group in3_attr_group = { .attrs = in3_attrs };
static struct attribute_group in4_attr_group = { .attrs = in4_attrs };
static struct attribute_group in5_attr_group = { .attrs = in5_attrs };
static struct attribute_group vid_attr_group = { .attrs = vid_attrs };

static int adt7475_detect(struct i2c_client *client,
			  struct i2c_board_info *info)
{
	struct i2c_adapter *adapter = client->adapter;
	int vendid, devid, devid2;
	const char *name;

	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
		return -ENODEV;

	vendid = adt7475_read(REG_VENDID);
	devid2 = adt7475_read(REG_DEVID2);
	if (vendid != 0x41 ||		/* Analog Devices */
	    (devid2 & 0xf8) != 0x68)
		return -ENODEV;

	devid = adt7475_read(REG_DEVID);
	if (devid == 0x73)
		name = "adt7473";
	else if (devid == 0x75 && client->addr == 0x2e)
		name = "adt7475";
	else if (devid == 0x76)
		name = "adt7476";
	else if ((devid2 & 0xfc) == 0x6c)
		name = "adt7490";
	else {
		dev_dbg(&adapter->dev,
			"Couldn't detect an ADT7473/75/76/90 part at "
			"0x%02x\n", (unsigned int)client->addr);
		return -ENODEV;
	}

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

	return 0;
}

static void adt7475_remove_files(struct i2c_client *client,
				 struct adt7475_data *data)
{
	sysfs_remove_group(&client->dev.kobj, &adt7475_attr_group);
	if (data->has_fan4)
		sysfs_remove_group(&client->dev.kobj, &fan4_attr_group);
	if (data->has_pwm2)
		sysfs_remove_group(&client->dev.kobj, &pwm2_attr_group);
	if (data->has_voltage & (1 << 0))
		sysfs_remove_group(&client->dev.kobj, &in0_attr_group);
	if (data->has_voltage & (1 << 3))
		sysfs_remove_group(&client->dev.kobj, &in3_attr_group);
	if (data->has_voltage & (1 << 4))
		sysfs_remove_group(&client->dev.kobj, &in4_attr_group);
	if (data->has_voltage & (1 << 5))
		sysfs_remove_group(&client->dev.kobj, &in5_attr_group);
	if (data->has_vid)
		sysfs_remove_group(&client->dev.kobj, &vid_attr_group);
}

static int adt7475_probe(struct i2c_client *client,
			 const struct i2c_device_id *id)
{
	static const char * const names[] = {
		[adt7473] = "ADT7473",
		[adt7475] = "ADT7475",
		[adt7476] = "ADT7476",
		[adt7490] = "ADT7490",
	};

	struct adt7475_data *data;
	int i, ret = 0, revision;
	u8 config2, config3;

	data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
	if (data == NULL)
		return -ENOMEM;

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

	/* Initialize device-specific values */
	switch (id->driver_data) {
	case adt7476:
		data->has_voltage = 0x0e;	/* in1 to in3 */
		revision = adt7475_read(REG_DEVID2) & 0x07;
		break;
	case adt7490:
		data->has_voltage = 0x3e;	/* in1 to in5 */
		revision = adt7475_read(REG_DEVID2) & 0x03;
		if (revision == 0x03)
			revision += adt7475_read(REG_DEVREV2);
		break;
	default:
		data->has_voltage = 0x06;	/* in1, in2 */
		revision = adt7475_read(REG_DEVID2) & 0x07;
	}

	config3 = adt7475_read(REG_CONFIG3);
	/* Pin PWM2 may alternatively be used for ALERT output */
	if (!(config3 & CONFIG3_SMBALERT))
		data->has_pwm2 = 1;
	/* Meaning of this bit is inverted for the ADT7473-1 */
	if (id->driver_data == adt7473 && revision >= 1)
		data->has_pwm2 = !data->has_pwm2;

	data->config4 = adt7475_read(REG_CONFIG4);
	/* Pin TACH4 may alternatively be used for THERM */
	if ((data->config4 & CONFIG4_PINFUNC) == 0x0)
		data->has_fan4 = 1;

	/*
	 * THERM configuration is more complex on the ADT7476 and ADT7490,
	 * because 2 different pins (TACH4 and +2.5 Vin) can be used for
	 * this function
	 */
	if (id->driver_data == adt7490) {
		if ((data->config4 & CONFIG4_PINFUNC) == 0x1 &&
		    !(config3 & CONFIG3_THERM))
			data->has_fan4 = 1;
	}
	if (id->driver_data == adt7476 || id->driver_data == adt7490) {
		if (!(config3 & CONFIG3_THERM) ||
		    (data->config4 & CONFIG4_PINFUNC) == 0x1)
			data->has_voltage |= (1 << 0);		/* in0 */
	}

	/*
	 * On the ADT7476, the +12V input pin may instead be used as VID5,
	 * and VID pins may alternatively be used as GPIO
	 */
	if (id->driver_data == adt7476) {
		u8 vid = adt7475_read(REG_VID);
		if (!(vid & VID_VIDSEL))
			data->has_voltage |= (1 << 4);		/* in4 */

		data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO);
	}

	/* Voltage attenuators can be bypassed, globally or individually */
	config2 = adt7475_read(REG_CONFIG2);
	if (config2 & CONFIG2_ATTN) {
		data->bypass_attn = (0x3 << 3) | 0x3;
	} else {
		data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) |
				    ((data->config4 & CONFIG4_ATTN_IN43) >> 3);
	}
	data->bypass_attn &= data->has_voltage;

	/*
	 * Call adt7475_read_pwm for all pwm's as this will reprogram any
	 * pwm's which are disabled to manual mode with 0% duty cycle
	 */
	for (i = 0; i < ADT7475_PWM_COUNT; i++)
		adt7475_read_pwm(client, i);

	ret = sysfs_create_group(&client->dev.kobj, &adt7475_attr_group);
	if (ret)
		return ret;

	/* Features that can be disabled individually */
	if (data->has_fan4) {
		ret = sysfs_create_group(&client->dev.kobj, &fan4_attr_group);
		if (ret)
			goto eremove;
	}
	if (data->has_pwm2) {
		ret = sysfs_create_group(&client->dev.kobj, &pwm2_attr_group);
		if (ret)
			goto eremove;
	}
	if (data->has_voltage & (1 << 0)) {
		ret = sysfs_create_group(&client->dev.kobj, &in0_attr_group);
		if (ret)
			goto eremove;
	}
	if (data->has_voltage & (1 << 3)) {
		ret = sysfs_create_group(&client->dev.kobj, &in3_attr_group);
		if (ret)
			goto eremove;
	}
	if (data->has_voltage & (1 << 4)) {
		ret = sysfs_create_group(&client->dev.kobj, &in4_attr_group);
		if (ret)
			goto eremove;
	}
	if (data->has_voltage & (1 << 5)) {
		ret = sysfs_create_group(&client->dev.kobj, &in5_attr_group);
		if (ret)
			goto eremove;
	}
	if (data->has_vid) {
		data->vrm = vid_which_vrm();
		ret = sysfs_create_group(&client->dev.kobj, &vid_attr_group);
		if (ret)
			goto eremove;
	}

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

	dev_info(&client->dev, "%s device, revision %d\n",
		 names[id->driver_data], revision);
	if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2)
		dev_info(&client->dev, "Optional features:%s%s%s%s%s\n",
			 (data->has_voltage & (1 << 0)) ? " in0" : "",
			 (data->has_voltage & (1 << 4)) ? " in4" : "",
			 data->has_fan4 ? " fan4" : "",
			 data->has_pwm2 ? " pwm2" : "",
			 data->has_vid ? " vid" : "");
	if (data->bypass_attn)
		dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n",
			 (data->bypass_attn & (1 << 0)) ? " in0" : "",
			 (data->bypass_attn & (1 << 1)) ? " in1" : "",
			 (data->bypass_attn & (1 << 3)) ? " in3" : "",
			 (data->bypass_attn & (1 << 4)) ? " in4" : "");

	return 0;

eremove:
	adt7475_remove_files(client, data);
	return ret;
}

static int adt7475_remove(struct i2c_client *client)
{
	struct adt7475_data *data = i2c_get_clientdata(client);

	hwmon_device_unregister(data->hwmon_dev);
	adt7475_remove_files(client, data);

	return 0;
}

static struct i2c_driver adt7475_driver = {
	.class		= I2C_CLASS_HWMON,
	.driver = {
		.name	= "adt7475",
	},
	.probe		= adt7475_probe,
	.remove		= adt7475_remove,
	.id_table	= adt7475_id,
	.detect		= adt7475_detect,
	.address_list	= normal_i2c,
};

static void adt7475_read_hystersis(struct i2c_client *client)
{
	struct adt7475_data *data = i2c_get_clientdata(client);

	data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
	data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0];
	data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);
}

static void adt7475_read_pwm(struct i2c_client *client, int index)
{
	struct adt7475_data *data = i2c_get_clientdata(client);
	unsigned int v;

	data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index));

	/*
	 * Figure out the internal value for pwmctrl and pwmchan
	 * based on the current settings
	 */
	v = (data->pwm[CONTROL][index] >> 5) & 7;

	if (v == 3)
		data->pwmctl[index] = 0;
	else if (v == 7)
		data->pwmctl[index] = 1;
	else if (v == 4) {
		/*
		 * The fan is disabled - we don't want to
		 * support that, so change to manual mode and
		 * set the duty cycle to 0 instead
		 */
		data->pwm[INPUT][index] = 0;
		data->pwm[CONTROL][index] &= ~0xE0;
		data->pwm[CONTROL][index] |= (7 << 5);

		i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
					  data->pwm[INPUT][index]);

		i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
					  data->pwm[CONTROL][index]);

		data->pwmctl[index] = 1;
	} else {
		data->pwmctl[index] = 2;

		switch (v) {
		case 0:
			data->pwmchan[index] = 1;
			break;
		case 1:
			data->pwmchan[index] = 2;
			break;
		case 2:
			data->pwmchan[index] = 4;
			break;
		case 5:
			data->pwmchan[index] = 6;
			break;
		case 6:
			data->pwmchan[index] = 7;
			break;
		}
	}
}

static struct adt7475_data *adt7475_update_device(struct device *dev)
{
	struct i2c_client *client = to_i2c_client(dev);
	struct adt7475_data *data = i2c_get_clientdata(client);
	u16 ext;
	int i;

	mutex_lock(&data->lock);

	/* Measurement values update every 2 seconds */
	if (time_after(jiffies, data->measure_updated + HZ * 2) ||
	    !data->valid) {
		data->alarms = adt7475_read(REG_STATUS2) << 8;
		data->alarms |= adt7475_read(REG_STATUS1);

		ext = (adt7475_read(REG_EXTEND2) << 8) |
			adt7475_read(REG_EXTEND1);
		for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
			if (!(data->has_voltage & (1 << i)))
				continue;
			data->voltage[INPUT][i] =
				(adt7475_read(VOLTAGE_REG(i)) << 2) |
				((ext >> (i * 2)) & 3);
		}

		for (i = 0; i < ADT7475_TEMP_COUNT; i++)
			data->temp[INPUT][i] =
				(adt7475_read(TEMP_REG(i)) << 2) |
				((ext >> ((i + 5) * 2)) & 3);

		if (data->has_voltage & (1 << 5)) {
			data->alarms |= adt7475_read(REG_STATUS4) << 24;
			ext = adt7475_read(REG_EXTEND3);
			data->voltage[INPUT][5] = adt7475_read(REG_VTT) << 2 |
				((ext >> 4) & 3);
		}

		for (i = 0; i < ADT7475_TACH_COUNT; i++) {
			if (i == 3 && !data->has_fan4)
				continue;
			data->tach[INPUT][i] =
				adt7475_read_word(client, TACH_REG(i));
		}

		/* Updated by hw when in auto mode */
		for (i = 0; i < ADT7475_PWM_COUNT; i++) {
			if (i == 1 && !data->has_pwm2)
				continue;
			data->pwm[INPUT][i] = adt7475_read(PWM_REG(i));
		}

		if (data->has_vid)
			data->vid = adt7475_read(REG_VID) & 0x3f;

		data->measure_updated = jiffies;
	}

	/* Limits and settings, should never change update every 60 seconds */
	if (time_after(jiffies, data->limits_updated + HZ * 60) ||
	    !data->valid) {
		data->config4 = adt7475_read(REG_CONFIG4);
		data->config5 = adt7475_read(REG_CONFIG5);

		for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
			if (!(data->has_voltage & (1 << i)))
				continue;
			/* Adjust values so they match the input precision */
			data->voltage[MIN][i] =
				adt7475_read(VOLTAGE_MIN_REG(i)) << 2;
			data->voltage[MAX][i] =
				adt7475_read(VOLTAGE_MAX_REG(i)) << 2;
		}

		if (data->has_voltage & (1 << 5)) {
			data->voltage[MIN][5] = adt7475_read(REG_VTT_MIN) << 2;
			data->voltage[MAX][5] = adt7475_read(REG_VTT_MAX) << 2;
		}

		for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
			/* Adjust values so they match the input precision */
			data->temp[MIN][i] =
				adt7475_read(TEMP_MIN_REG(i)) << 2;
			data->temp[MAX][i] =
				adt7475_read(TEMP_MAX_REG(i)) << 2;
			data->temp[AUTOMIN][i] =
				adt7475_read(TEMP_TMIN_REG(i)) << 2;
			data->temp[THERM][i] =
				adt7475_read(TEMP_THERM_REG(i)) << 2;
			data->temp[OFFSET][i] =
				adt7475_read(TEMP_OFFSET_REG(i));
		}
		adt7475_read_hystersis(client);

		for (i = 0; i < ADT7475_TACH_COUNT; i++) {
			if (i == 3 && !data->has_fan4)
				continue;
			data->tach[MIN][i] =
				adt7475_read_word(client, TACH_MIN_REG(i));
		}

		for (i = 0; i < ADT7475_PWM_COUNT; i++) {
			if (i == 1 && !data->has_pwm2)
				continue;
			data->pwm[MAX][i] = adt7475_read(PWM_MAX_REG(i));
			data->pwm[MIN][i] = adt7475_read(PWM_MIN_REG(i));
			/* Set the channel and control information */
			adt7475_read_pwm(client, i);
		}

		data->range[0] = adt7475_read(TEMP_TRANGE_REG(0));
		data->range[1] = adt7475_read(TEMP_TRANGE_REG(1));
		data->range[2] = adt7475_read(TEMP_TRANGE_REG(2));

		data->limits_updated = jiffies;
		data->valid = 1;
	}

	mutex_unlock(&data->lock);

	return data;
}

module_i2c_driver(adt7475_driver);

MODULE_AUTHOR("Advanced Micro Devices, Inc");
MODULE_DESCRIPTION("adt7475 driver");
MODULE_LICENSE("GPL");