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1// SPDX-License-Identifier: GPL-2.0-or-later2/* tmp401.c3 *4 * Copyright (C) 2007,2008 Hans de Goede <hdegoede@redhat.com>5 * Preliminary tmp411 support by:6 * Gabriel Konat, Sander Leget, Wouter Willems7 * Copyright (C) 2009 Andre Prendel <andre.prendel@gmx.de>8 *9 * Cleanup and support for TMP431 and TMP432 by Guenter Roeck10 * Copyright (c) 2013 Guenter Roeck <linux@roeck-us.net>11 */12 13/*14 * Driver for the Texas Instruments TMP401 SMBUS temperature sensor IC.15 *16 * Note this IC is in some aspect similar to the LM90, but it has quite a17 * few differences too, for example the local temp has a higher resolution18 * and thus has 16 bits registers for its value and limit instead of 8 bits.19 */20 21#include <linux/bitops.h>22#include <linux/err.h>23#include <linux/i2c.h>24#include <linux/hwmon.h>25#include <linux/init.h>26#include <linux/module.h>27#include <linux/mutex.h>28#include <linux/regmap.h>29#include <linux/slab.h>30 31/* Addresses to scan */32static const unsigned short normal_i2c[] = { 0x48, 0x49, 0x4a, 0x4c, 0x4d,33 0x4e, 0x4f, I2C_CLIENT_END };34 35enum chips { tmp401, tmp411, tmp431, tmp432, tmp435 };36 37/*38 * The TMP401 registers, note some registers have different addresses for39 * reading and writing40 */41#define TMP401_STATUS 0x0242#define TMP401_CONFIG 0x0343#define TMP401_CONVERSION_RATE 0x0444#define TMP4XX_N_FACTOR_REG 0x1845#define TMP43X_BETA_RANGE 0x2546#define TMP401_TEMP_CRIT_HYST 0x2147#define TMP401_MANUFACTURER_ID_REG 0xFE48#define TMP401_DEVICE_ID_REG 0xFF49 50static const u8 TMP401_TEMP_MSB[7][3] = {51 { 0x00, 0x01, 0x23 }, /* temp */52 { 0x06, 0x08, 0x16 }, /* low limit */53 { 0x05, 0x07, 0x15 }, /* high limit */54 { 0x20, 0x19, 0x1a }, /* therm (crit) limit */55 { 0x30, 0x34, 0x00 }, /* lowest */56 { 0x32, 0xf6, 0x00 }, /* highest */57};58 59/* [0] = fault, [1] = low, [2] = high, [3] = therm/crit */60static const u8 TMP432_STATUS_REG[] = {61 0x1b, 0x36, 0x35, 0x37 };62 63/* Flags */64#define TMP401_CONFIG_RANGE BIT(2)65#define TMP401_CONFIG_SHUTDOWN BIT(6)66#define TMP401_STATUS_LOCAL_CRIT BIT(0)67#define TMP401_STATUS_REMOTE_CRIT BIT(1)68#define TMP401_STATUS_REMOTE_OPEN BIT(2)69#define TMP401_STATUS_REMOTE_LOW BIT(3)70#define TMP401_STATUS_REMOTE_HIGH BIT(4)71#define TMP401_STATUS_LOCAL_LOW BIT(5)72#define TMP401_STATUS_LOCAL_HIGH BIT(6)73 74/* On TMP432, each status has its own register */75#define TMP432_STATUS_LOCAL BIT(0)76#define TMP432_STATUS_REMOTE1 BIT(1)77#define TMP432_STATUS_REMOTE2 BIT(2)78 79/* Manufacturer / Device ID's */80#define TMP401_MANUFACTURER_ID 0x5581#define TMP401_DEVICE_ID 0x1182#define TMP411A_DEVICE_ID 0x1283#define TMP411B_DEVICE_ID 0x1384#define TMP411C_DEVICE_ID 0x1085#define TMP431_DEVICE_ID 0x3186#define TMP432_DEVICE_ID 0x3287#define TMP435_DEVICE_ID 0x3588 89/*90 * Driver data (common to all clients)91 */92 93static const struct i2c_device_id tmp401_id[] = {94 { "tmp401", tmp401 },95 { "tmp411", tmp411 },96 { "tmp431", tmp431 },97 { "tmp432", tmp432 },98 { "tmp435", tmp435 },99 { }100};101MODULE_DEVICE_TABLE(i2c, tmp401_id);102 103/*104 * Client data (each client gets its own)105 */106 107struct tmp401_data {108 struct i2c_client *client;109 struct regmap *regmap;110 struct mutex update_lock;111 enum chips kind;112 113 bool extended_range;114 115 /* hwmon API configuration data */116 u32 chip_channel_config[4];117 struct hwmon_channel_info chip_info;118 u32 temp_channel_config[4];119 struct hwmon_channel_info temp_info;120 const struct hwmon_channel_info *info[3];121 struct hwmon_chip_info chip;122};123 124/* regmap */125 126static bool tmp401_regmap_is_volatile(struct device *dev, unsigned int reg)127{128 switch (reg) {129 case 0: /* local temp msb */130 case 1: /* remote temp msb */131 case 2: /* status */132 case 0x10: /* remote temp lsb */133 case 0x15: /* local temp lsb */134 case 0x1b: /* status (tmp432) */135 case 0x23 ... 0x24: /* remote temp 2 msb / lsb */136 case 0x30 ... 0x37: /* lowest/highest temp; status (tmp432) */137 return true;138 default:139 return false;140 }141}142 143static int tmp401_reg_read(void *context, unsigned int reg, unsigned int *val)144{145 struct tmp401_data *data = context;146 struct i2c_client *client = data->client;147 int regval;148 149 switch (reg) {150 case 0: /* local temp msb */151 case 1: /* remote temp msb */152 case 5: /* local temp high limit msb */153 case 6: /* local temp low limit msb */154 case 7: /* remote temp ligh limit msb */155 case 8: /* remote temp low limit msb */156 case 0x15: /* remote temp 2 high limit msb */157 case 0x16: /* remote temp 2 low limit msb */158 case 0x23: /* remote temp 2 msb */159 case 0x30: /* local temp minimum, tmp411 */160 case 0x32: /* local temp maximum, tmp411 */161 case 0x34: /* remote temp minimum, tmp411 */162 case 0xf6: /* remote temp maximum, tmp411 (really 0x36) */163 /* work around register overlap between TMP411 and TMP432 */164 if (reg == 0xf6)165 reg = 0x36;166 regval = i2c_smbus_read_word_swapped(client, reg);167 if (regval < 0)168 return regval;169 *val = regval;170 break;171 case 0x19: /* critical limits, 8-bit registers */172 case 0x1a:173 case 0x20:174 regval = i2c_smbus_read_byte_data(client, reg);175 if (regval < 0)176 return regval;177 *val = regval << 8;178 break;179 case 0x1b:180 case 0x35 ... 0x37:181 if (data->kind == tmp432) {182 regval = i2c_smbus_read_byte_data(client, reg);183 if (regval < 0)184 return regval;185 *val = regval;186 break;187 }188 /* simulate TMP432 status registers */189 regval = i2c_smbus_read_byte_data(client, TMP401_STATUS);190 if (regval < 0)191 return regval;192 *val = 0;193 switch (reg) {194 case 0x1b: /* open / fault */195 if (regval & TMP401_STATUS_REMOTE_OPEN)196 *val |= BIT(1);197 break;198 case 0x35: /* high limit */199 if (regval & TMP401_STATUS_LOCAL_HIGH)200 *val |= BIT(0);201 if (regval & TMP401_STATUS_REMOTE_HIGH)202 *val |= BIT(1);203 break;204 case 0x36: /* low limit */205 if (regval & TMP401_STATUS_LOCAL_LOW)206 *val |= BIT(0);207 if (regval & TMP401_STATUS_REMOTE_LOW)208 *val |= BIT(1);209 break;210 case 0x37: /* therm / crit limit */211 if (regval & TMP401_STATUS_LOCAL_CRIT)212 *val |= BIT(0);213 if (regval & TMP401_STATUS_REMOTE_CRIT)214 *val |= BIT(1);215 break;216 }217 break;218 default:219 regval = i2c_smbus_read_byte_data(client, reg);220 if (regval < 0)221 return regval;222 *val = regval;223 break;224 }225 return 0;226}227 228static int tmp401_reg_write(void *context, unsigned int reg, unsigned int val)229{230 struct tmp401_data *data = context;231 struct i2c_client *client = data->client;232 233 switch (reg) {234 case 0x05: /* local temp high limit msb */235 case 0x06: /* local temp low limit msb */236 case 0x07: /* remote temp ligh limit msb */237 case 0x08: /* remote temp low limit msb */238 reg += 6; /* adjust for register write address */239 fallthrough;240 case 0x15: /* remote temp 2 high limit msb */241 case 0x16: /* remote temp 2 low limit msb */242 return i2c_smbus_write_word_swapped(client, reg, val);243 case 0x19: /* critical limits, 8-bit registers */244 case 0x1a:245 case 0x20:246 return i2c_smbus_write_byte_data(client, reg, val >> 8);247 case TMP401_CONVERSION_RATE:248 case TMP401_CONFIG:249 reg += 6; /* adjust for register write address */250 fallthrough;251 default:252 return i2c_smbus_write_byte_data(client, reg, val);253 }254}255 256static const struct regmap_config tmp401_regmap_config = {257 .reg_bits = 8,258 .val_bits = 16,259 .cache_type = REGCACHE_MAPLE,260 .volatile_reg = tmp401_regmap_is_volatile,261 .reg_read = tmp401_reg_read,262 .reg_write = tmp401_reg_write,263};264 265/* temperature conversion */266 267static int tmp401_register_to_temp(u16 reg, bool extended)268{269 int temp = reg;270 271 if (extended)272 temp -= 64 * 256;273 274 return DIV_ROUND_CLOSEST(temp * 125, 32);275}276 277static u16 tmp401_temp_to_register(long temp, bool extended, int zbits)278{279 if (extended) {280 temp = clamp_val(temp, -64000, 191000);281 temp += 64000;282 } else {283 temp = clamp_val(temp, 0, 127000);284 }285 286 return DIV_ROUND_CLOSEST(temp * (1 << (8 - zbits)), 1000) << zbits;287}288 289/* hwmon API functions */290 291static const u8 tmp401_temp_reg_index[] = {292 [hwmon_temp_input] = 0,293 [hwmon_temp_min] = 1,294 [hwmon_temp_max] = 2,295 [hwmon_temp_crit] = 3,296 [hwmon_temp_lowest] = 4,297 [hwmon_temp_highest] = 5,298};299 300static const u8 tmp401_status_reg_index[] = {301 [hwmon_temp_fault] = 0,302 [hwmon_temp_min_alarm] = 1,303 [hwmon_temp_max_alarm] = 2,304 [hwmon_temp_crit_alarm] = 3,305};306 307static int tmp401_temp_read(struct device *dev, u32 attr, int channel, long *val)308{309 struct tmp401_data *data = dev_get_drvdata(dev);310 struct regmap *regmap = data->regmap;311 unsigned int regs[2] = { TMP401_TEMP_MSB[3][channel], TMP401_TEMP_CRIT_HYST };312 unsigned int regval;313 u16 regvals[2];314 int reg, ret;315 316 switch (attr) {317 case hwmon_temp_input:318 case hwmon_temp_min:319 case hwmon_temp_max:320 case hwmon_temp_crit:321 case hwmon_temp_lowest:322 case hwmon_temp_highest:323 reg = TMP401_TEMP_MSB[tmp401_temp_reg_index[attr]][channel];324 ret = regmap_read(regmap, reg, ®val);325 if (ret < 0)326 return ret;327 *val = tmp401_register_to_temp(regval, data->extended_range);328 break;329 case hwmon_temp_crit_hyst:330 ret = regmap_multi_reg_read(regmap, regs, regvals, 2);331 if (ret < 0)332 return ret;333 *val = tmp401_register_to_temp(regvals[0], data->extended_range) -334 (regvals[1] * 1000);335 break;336 case hwmon_temp_fault:337 case hwmon_temp_min_alarm:338 case hwmon_temp_max_alarm:339 case hwmon_temp_crit_alarm:340 reg = TMP432_STATUS_REG[tmp401_status_reg_index[attr]];341 ret = regmap_read(regmap, reg, ®val);342 if (ret < 0)343 return ret;344 *val = !!(regval & BIT(channel));345 break;346 default:347 return -EOPNOTSUPP;348 }349 return 0;350}351 352static int tmp401_temp_write(struct device *dev, u32 attr, int channel,353 long val)354{355 struct tmp401_data *data = dev_get_drvdata(dev);356 struct regmap *regmap = data->regmap;357 unsigned int regval;358 int reg, ret, temp;359 360 mutex_lock(&data->update_lock);361 switch (attr) {362 case hwmon_temp_min:363 case hwmon_temp_max:364 case hwmon_temp_crit:365 reg = TMP401_TEMP_MSB[tmp401_temp_reg_index[attr]][channel];366 regval = tmp401_temp_to_register(val, data->extended_range,367 attr == hwmon_temp_crit ? 8 : 4);368 ret = regmap_write(regmap, reg, regval);369 break;370 case hwmon_temp_crit_hyst:371 if (data->extended_range)372 val = clamp_val(val, -64000, 191000);373 else374 val = clamp_val(val, 0, 127000);375 376 reg = TMP401_TEMP_MSB[3][channel];377 ret = regmap_read(regmap, reg, ®val);378 if (ret < 0)379 break;380 temp = tmp401_register_to_temp(regval, data->extended_range);381 val = clamp_val(val, temp - 255000, temp);382 regval = ((temp - val) + 500) / 1000;383 ret = regmap_write(regmap, TMP401_TEMP_CRIT_HYST, regval);384 break;385 default:386 ret = -EOPNOTSUPP;387 break;388 }389 mutex_unlock(&data->update_lock);390 return ret;391}392 393static int tmp401_chip_read(struct device *dev, u32 attr, int channel, long *val)394{395 struct tmp401_data *data = dev_get_drvdata(dev);396 u32 regval;397 int ret;398 399 switch (attr) {400 case hwmon_chip_update_interval:401 ret = regmap_read(data->regmap, TMP401_CONVERSION_RATE, ®val);402 if (ret < 0)403 return ret;404 *val = (1 << (7 - regval)) * 125;405 break;406 case hwmon_chip_temp_reset_history:407 *val = 0;408 break;409 default:410 return -EOPNOTSUPP;411 }412 413 return 0;414}415 416static int tmp401_set_convrate(struct regmap *regmap, long val)417{418 int rate;419 420 /*421 * For valid rates, interval can be calculated as422 * interval = (1 << (7 - rate)) * 125;423 * Rounded rate is therefore424 * rate = 7 - __fls(interval * 4 / (125 * 3));425 * Use clamp_val() to avoid overflows, and to ensure valid input426 * for __fls.427 */428 val = clamp_val(val, 125, 16000);429 rate = 7 - __fls(val * 4 / (125 * 3));430 return regmap_write(regmap, TMP401_CONVERSION_RATE, rate);431}432 433static int tmp401_chip_write(struct device *dev, u32 attr, int channel, long val)434{435 struct tmp401_data *data = dev_get_drvdata(dev);436 struct regmap *regmap = data->regmap;437 int err;438 439 mutex_lock(&data->update_lock);440 switch (attr) {441 case hwmon_chip_update_interval:442 err = tmp401_set_convrate(regmap, val);443 break;444 case hwmon_chip_temp_reset_history:445 if (val != 1) {446 err = -EINVAL;447 break;448 }449 /*450 * Reset history by writing any value to any of the451 * minimum/maximum registers (0x30-0x37).452 */453 err = regmap_write(regmap, 0x30, 0);454 break;455 default:456 err = -EOPNOTSUPP;457 break;458 }459 mutex_unlock(&data->update_lock);460 461 return err;462}463 464static int tmp401_read(struct device *dev, enum hwmon_sensor_types type,465 u32 attr, int channel, long *val)466{467 switch (type) {468 case hwmon_chip:469 return tmp401_chip_read(dev, attr, channel, val);470 case hwmon_temp:471 return tmp401_temp_read(dev, attr, channel, val);472 default:473 return -EOPNOTSUPP;474 }475}476 477static int tmp401_write(struct device *dev, enum hwmon_sensor_types type,478 u32 attr, int channel, long val)479{480 switch (type) {481 case hwmon_chip:482 return tmp401_chip_write(dev, attr, channel, val);483 case hwmon_temp:484 return tmp401_temp_write(dev, attr, channel, val);485 default:486 return -EOPNOTSUPP;487 }488}489 490static umode_t tmp401_is_visible(const void *data, enum hwmon_sensor_types type,491 u32 attr, int channel)492{493 switch (type) {494 case hwmon_chip:495 switch (attr) {496 case hwmon_chip_update_interval:497 case hwmon_chip_temp_reset_history:498 return 0644;499 default:500 break;501 }502 break;503 case hwmon_temp:504 switch (attr) {505 case hwmon_temp_input:506 case hwmon_temp_min_alarm:507 case hwmon_temp_max_alarm:508 case hwmon_temp_crit_alarm:509 case hwmon_temp_fault:510 case hwmon_temp_lowest:511 case hwmon_temp_highest:512 return 0444;513 case hwmon_temp_min:514 case hwmon_temp_max:515 case hwmon_temp_crit:516 case hwmon_temp_crit_hyst:517 return 0644;518 default:519 break;520 }521 break;522 default:523 break;524 }525 return 0;526}527 528static const struct hwmon_ops tmp401_ops = {529 .is_visible = tmp401_is_visible,530 .read = tmp401_read,531 .write = tmp401_write,532};533 534/* chip initialization, detect, probe */535 536static int tmp401_init_client(struct tmp401_data *data)537{538 struct regmap *regmap = data->regmap;539 u32 config, config_orig;540 int ret;541 u32 val = 0;542 s32 nfactor = 0;543 544 /* Set conversion rate to 2 Hz */545 ret = regmap_write(regmap, TMP401_CONVERSION_RATE, 5);546 if (ret < 0)547 return ret;548 549 /* Start conversions (disable shutdown if necessary) */550 ret = regmap_read(regmap, TMP401_CONFIG, &config);551 if (ret < 0)552 return ret;553 554 config_orig = config;555 config &= ~TMP401_CONFIG_SHUTDOWN;556 557 if (of_property_read_bool(data->client->dev.of_node, "ti,extended-range-enable")) {558 /* Enable measurement over extended temperature range */559 config |= TMP401_CONFIG_RANGE;560 }561 562 data->extended_range = !!(config & TMP401_CONFIG_RANGE);563 564 if (config != config_orig) {565 ret = regmap_write(regmap, TMP401_CONFIG, config);566 if (ret < 0)567 return ret;568 }569 570 ret = of_property_read_u32(data->client->dev.of_node, "ti,n-factor", &nfactor);571 if (!ret) {572 if (data->kind == tmp401) {573 dev_err(&data->client->dev, "ti,tmp401 does not support n-factor correction\n");574 return -EINVAL;575 }576 if (nfactor < -128 || nfactor > 127) {577 dev_err(&data->client->dev, "n-factor is invalid (%d)\n", nfactor);578 return -EINVAL;579 }580 ret = regmap_write(regmap, TMP4XX_N_FACTOR_REG, (unsigned int)nfactor);581 if (ret < 0)582 return ret;583 }584 585 ret = of_property_read_u32(data->client->dev.of_node, "ti,beta-compensation", &val);586 if (!ret) {587 if (data->kind == tmp401 || data->kind == tmp411) {588 dev_err(&data->client->dev, "ti,tmp401 or ti,tmp411 does not support beta compensation\n");589 return -EINVAL;590 }591 if (val > 15) {592 dev_err(&data->client->dev, "beta-compensation is invalid (%u)\n", val);593 return -EINVAL;594 }595 ret = regmap_write(regmap, TMP43X_BETA_RANGE, val);596 if (ret < 0)597 return ret;598 }599 600 return 0;601}602 603static int tmp401_detect(struct i2c_client *client,604 struct i2c_board_info *info)605{606 enum chips kind;607 struct i2c_adapter *adapter = client->adapter;608 u8 reg;609 610 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))611 return -ENODEV;612 613 /* Detect and identify the chip */614 reg = i2c_smbus_read_byte_data(client, TMP401_MANUFACTURER_ID_REG);615 if (reg != TMP401_MANUFACTURER_ID)616 return -ENODEV;617 618 reg = i2c_smbus_read_byte_data(client, TMP401_DEVICE_ID_REG);619 620 switch (reg) {621 case TMP401_DEVICE_ID:622 if (client->addr != 0x4c)623 return -ENODEV;624 kind = tmp401;625 break;626 case TMP411A_DEVICE_ID:627 if (client->addr != 0x4c)628 return -ENODEV;629 kind = tmp411;630 break;631 case TMP411B_DEVICE_ID:632 if (client->addr != 0x4d)633 return -ENODEV;634 kind = tmp411;635 break;636 case TMP411C_DEVICE_ID:637 if (client->addr != 0x4e)638 return -ENODEV;639 kind = tmp411;640 break;641 case TMP431_DEVICE_ID:642 if (client->addr != 0x4c && client->addr != 0x4d)643 return -ENODEV;644 kind = tmp431;645 break;646 case TMP432_DEVICE_ID:647 if (client->addr != 0x4c && client->addr != 0x4d)648 return -ENODEV;649 kind = tmp432;650 break;651 case TMP435_DEVICE_ID:652 kind = tmp435;653 break;654 default:655 return -ENODEV;656 }657 658 reg = i2c_smbus_read_byte_data(client, TMP401_CONFIG);659 if (reg & 0x1b)660 return -ENODEV;661 662 reg = i2c_smbus_read_byte_data(client, TMP401_CONVERSION_RATE);663 /* Datasheet says: 0x1-0x6 */664 if (reg > 15)665 return -ENODEV;666 667 strscpy(info->type, tmp401_id[kind].name, I2C_NAME_SIZE);668 669 return 0;670}671 672static int tmp401_probe(struct i2c_client *client)673{674 static const char * const names[] = {675 "TMP401", "TMP411", "TMP431", "TMP432", "TMP435"676 };677 struct device *dev = &client->dev;678 struct hwmon_channel_info *info;679 struct device *hwmon_dev;680 struct tmp401_data *data;681 int status;682 683 data = devm_kzalloc(dev, sizeof(struct tmp401_data), GFP_KERNEL);684 if (!data)685 return -ENOMEM;686 687 data->client = client;688 mutex_init(&data->update_lock);689 data->kind = (uintptr_t)i2c_get_match_data(client);690 691 data->regmap = devm_regmap_init(dev, NULL, data, &tmp401_regmap_config);692 if (IS_ERR(data->regmap))693 return PTR_ERR(data->regmap);694 695 /* initialize configuration data */696 data->chip.ops = &tmp401_ops;697 data->chip.info = data->info;698 699 data->info[0] = &data->chip_info;700 data->info[1] = &data->temp_info;701 702 info = &data->chip_info;703 info->type = hwmon_chip;704 info->config = data->chip_channel_config;705 706 data->chip_channel_config[0] = HWMON_C_UPDATE_INTERVAL;707 708 info = &data->temp_info;709 info->type = hwmon_temp;710 info->config = data->temp_channel_config;711 712 data->temp_channel_config[0] = HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX |713 HWMON_T_CRIT | HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM |714 HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM;715 data->temp_channel_config[1] = HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX |716 HWMON_T_CRIT | HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM |717 HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | HWMON_T_FAULT;718 719 if (data->kind == tmp411) {720 data->temp_channel_config[0] |= HWMON_T_HIGHEST | HWMON_T_LOWEST;721 data->temp_channel_config[1] |= HWMON_T_HIGHEST | HWMON_T_LOWEST;722 data->chip_channel_config[0] |= HWMON_C_TEMP_RESET_HISTORY;723 }724 725 if (data->kind == tmp432) {726 data->temp_channel_config[2] = HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX |727 HWMON_T_CRIT | HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM |728 HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | HWMON_T_FAULT;729 }730 731 /* Initialize the TMP401 chip */732 status = tmp401_init_client(data);733 if (status < 0)734 return status;735 736 hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name, data,737 &data->chip, NULL);738 if (IS_ERR(hwmon_dev))739 return PTR_ERR(hwmon_dev);740 741 dev_info(dev, "Detected TI %s chip\n", names[data->kind]);742 743 return 0;744}745 746static const struct of_device_id __maybe_unused tmp4xx_of_match[] = {747 { .compatible = "ti,tmp401", },748 { .compatible = "ti,tmp411", },749 { .compatible = "ti,tmp431", },750 { .compatible = "ti,tmp432", },751 { .compatible = "ti,tmp435", },752 { },753};754MODULE_DEVICE_TABLE(of, tmp4xx_of_match);755 756static struct i2c_driver tmp401_driver = {757 .class = I2C_CLASS_HWMON,758 .driver = {759 .name = "tmp401",760 .of_match_table = of_match_ptr(tmp4xx_of_match),761 },762 .probe = tmp401_probe,763 .id_table = tmp401_id,764 .detect = tmp401_detect,765 .address_list = normal_i2c,766};767 768module_i2c_driver(tmp401_driver);769 770MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");771MODULE_DESCRIPTION("Texas Instruments TMP401 temperature sensor driver");772MODULE_LICENSE("GPL");773