721 lines · c
1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Driver for the ADT7411 (I2C/SPI 8 channel 10 bit ADC & temperature-sensor)4 *5 * Copyright (C) 2008, 2010 Pengutronix6 *7 * TODO: SPI, use power-down mode for suspend?, interrupt handling?8 */9 10#include <linux/kernel.h>11#include <linux/module.h>12#include <linux/init.h>13#include <linux/err.h>14#include <linux/mutex.h>15#include <linux/jiffies.h>16#include <linux/i2c.h>17#include <linux/hwmon.h>18#include <linux/hwmon-sysfs.h>19#include <linux/slab.h>20 21#define ADT7411_REG_STAT_1 0x0022#define ADT7411_STAT_1_INT_TEMP_HIGH BIT(0)23#define ADT7411_STAT_1_INT_TEMP_LOW BIT(1)24#define ADT7411_STAT_1_EXT_TEMP_HIGH_AIN1 BIT(2)25#define ADT7411_STAT_1_EXT_TEMP_LOW BIT(3)26#define ADT7411_STAT_1_EXT_TEMP_FAULT BIT(4)27#define ADT7411_STAT_1_AIN2 BIT(5)28#define ADT7411_STAT_1_AIN3 BIT(6)29#define ADT7411_STAT_1_AIN4 BIT(7)30#define ADT7411_REG_STAT_2 0x0131#define ADT7411_STAT_2_AIN5 BIT(0)32#define ADT7411_STAT_2_AIN6 BIT(1)33#define ADT7411_STAT_2_AIN7 BIT(2)34#define ADT7411_STAT_2_AIN8 BIT(3)35#define ADT7411_STAT_2_VDD BIT(4)36#define ADT7411_REG_INT_TEMP_VDD_LSB 0x0337#define ADT7411_REG_EXT_TEMP_AIN14_LSB 0x0438#define ADT7411_REG_VDD_MSB 0x0639#define ADT7411_REG_INT_TEMP_MSB 0x0740#define ADT7411_REG_EXT_TEMP_AIN1_MSB 0x0841 42#define ADT7411_REG_CFG1 0x1843#define ADT7411_CFG1_START_MONITOR BIT(0)44#define ADT7411_CFG1_RESERVED_BIT1 BIT(1)45#define ADT7411_CFG1_EXT_TDM BIT(2)46#define ADT7411_CFG1_RESERVED_BIT3 BIT(3)47 48#define ADT7411_REG_CFG2 0x1949#define ADT7411_CFG2_DISABLE_AVG BIT(5)50 51#define ADT7411_REG_CFG3 0x1a52#define ADT7411_CFG3_ADC_CLK_225 BIT(0)53#define ADT7411_CFG3_RESERVED_BIT1 BIT(1)54#define ADT7411_CFG3_RESERVED_BIT2 BIT(2)55#define ADT7411_CFG3_RESERVED_BIT3 BIT(3)56#define ADT7411_CFG3_REF_VDD BIT(4)57 58#define ADT7411_REG_VDD_HIGH 0x2359#define ADT7411_REG_VDD_LOW 0x2460#define ADT7411_REG_TEMP_HIGH(nr) (0x25 + 2 * (nr))61#define ADT7411_REG_TEMP_LOW(nr) (0x26 + 2 * (nr))62#define ADT7411_REG_IN_HIGH(nr) ((nr) > 1 \63 ? 0x2b + 2 * ((nr)-2) \64 : 0x27)65#define ADT7411_REG_IN_LOW(nr) ((nr) > 1 \66 ? 0x2c + 2 * ((nr)-2) \67 : 0x28)68 69#define ADT7411_REG_DEVICE_ID 0x4d70#define ADT7411_REG_MANUFACTURER_ID 0x4e71 72#define ADT7411_DEVICE_ID 0x273#define ADT7411_MANUFACTURER_ID 0x4174 75static const unsigned short normal_i2c[] = { 0x48, 0x4a, 0x4b, I2C_CLIENT_END };76 77static const u8 adt7411_in_alarm_reg[] = {78 ADT7411_REG_STAT_2,79 ADT7411_REG_STAT_1,80 ADT7411_REG_STAT_1,81 ADT7411_REG_STAT_1,82 ADT7411_REG_STAT_1,83 ADT7411_REG_STAT_2,84 ADT7411_REG_STAT_2,85 ADT7411_REG_STAT_2,86 ADT7411_REG_STAT_2,87};88 89static const u8 adt7411_in_alarm_bits[] = {90 ADT7411_STAT_2_VDD,91 ADT7411_STAT_1_EXT_TEMP_HIGH_AIN1,92 ADT7411_STAT_1_AIN2,93 ADT7411_STAT_1_AIN3,94 ADT7411_STAT_1_AIN4,95 ADT7411_STAT_2_AIN5,96 ADT7411_STAT_2_AIN6,97 ADT7411_STAT_2_AIN7,98 ADT7411_STAT_2_AIN8,99};100 101struct adt7411_data {102 struct mutex device_lock; /* for "atomic" device accesses */103 struct mutex update_lock;104 unsigned long next_update;105 long vref_cached;106 struct i2c_client *client;107 bool use_ext_temp;108};109 110/*111 * When reading a register containing (up to 4) lsb, all associated112 * msb-registers get locked by the hardware. After _one_ of those msb is read,113 * _all_ are unlocked. In order to use this locking correctly, reading lsb/msb114 * is protected here with a mutex, too.115 */116static int adt7411_read_10_bit(struct i2c_client *client, u8 lsb_reg,117 u8 msb_reg, u8 lsb_shift)118{119 struct adt7411_data *data = i2c_get_clientdata(client);120 int val, tmp;121 122 mutex_lock(&data->device_lock);123 124 val = i2c_smbus_read_byte_data(client, lsb_reg);125 if (val < 0)126 goto exit_unlock;127 128 tmp = (val >> lsb_shift) & 3;129 val = i2c_smbus_read_byte_data(client, msb_reg);130 131 if (val >= 0)132 val = (val << 2) | tmp;133 134 exit_unlock:135 mutex_unlock(&data->device_lock);136 137 return val;138}139 140static int adt7411_modify_bit(struct i2c_client *client, u8 reg, u8 bit,141 bool flag)142{143 struct adt7411_data *data = i2c_get_clientdata(client);144 int ret, val;145 146 mutex_lock(&data->device_lock);147 148 ret = i2c_smbus_read_byte_data(client, reg);149 if (ret < 0)150 goto exit_unlock;151 152 if (flag)153 val = ret | bit;154 else155 val = ret & ~bit;156 157 ret = i2c_smbus_write_byte_data(client, reg, val);158 159 exit_unlock:160 mutex_unlock(&data->device_lock);161 return ret;162}163 164static ssize_t adt7411_show_bit(struct device *dev,165 struct device_attribute *attr, char *buf)166{167 struct sensor_device_attribute_2 *attr2 = to_sensor_dev_attr_2(attr);168 struct adt7411_data *data = dev_get_drvdata(dev);169 struct i2c_client *client = data->client;170 int ret = i2c_smbus_read_byte_data(client, attr2->index);171 172 return ret < 0 ? ret : sprintf(buf, "%u\n", !!(ret & attr2->nr));173}174 175static ssize_t adt7411_set_bit(struct device *dev,176 struct device_attribute *attr, const char *buf,177 size_t count)178{179 struct sensor_device_attribute_2 *s_attr2 = to_sensor_dev_attr_2(attr);180 struct adt7411_data *data = dev_get_drvdata(dev);181 struct i2c_client *client = data->client;182 int ret;183 unsigned long flag;184 185 ret = kstrtoul(buf, 0, &flag);186 if (ret || flag > 1)187 return -EINVAL;188 189 ret = adt7411_modify_bit(client, s_attr2->index, s_attr2->nr, flag);190 191 /* force update */192 mutex_lock(&data->update_lock);193 data->next_update = jiffies;194 mutex_unlock(&data->update_lock);195 196 return ret < 0 ? ret : count;197}198 199#define ADT7411_BIT_ATTR(__name, __reg, __bit) \200 SENSOR_DEVICE_ATTR_2(__name, S_IRUGO | S_IWUSR, adt7411_show_bit, \201 adt7411_set_bit, __bit, __reg)202 203static ADT7411_BIT_ATTR(no_average, ADT7411_REG_CFG2, ADT7411_CFG2_DISABLE_AVG);204static ADT7411_BIT_ATTR(fast_sampling, ADT7411_REG_CFG3, ADT7411_CFG3_ADC_CLK_225);205static ADT7411_BIT_ATTR(adc_ref_vdd, ADT7411_REG_CFG3, ADT7411_CFG3_REF_VDD);206 207static struct attribute *adt7411_attrs[] = {208 &sensor_dev_attr_no_average.dev_attr.attr,209 &sensor_dev_attr_fast_sampling.dev_attr.attr,210 &sensor_dev_attr_adc_ref_vdd.dev_attr.attr,211 NULL212};213ATTRIBUTE_GROUPS(adt7411);214 215static int adt7411_read_in_alarm(struct device *dev, int channel, long *val)216{217 struct adt7411_data *data = dev_get_drvdata(dev);218 struct i2c_client *client = data->client;219 int ret;220 221 ret = i2c_smbus_read_byte_data(client, adt7411_in_alarm_reg[channel]);222 if (ret < 0)223 return ret;224 *val = !!(ret & adt7411_in_alarm_bits[channel]);225 return 0;226}227 228static int adt7411_read_in_vdd(struct device *dev, u32 attr, long *val)229{230 struct adt7411_data *data = dev_get_drvdata(dev);231 struct i2c_client *client = data->client;232 int ret;233 234 switch (attr) {235 case hwmon_in_input:236 ret = adt7411_read_10_bit(client, ADT7411_REG_INT_TEMP_VDD_LSB,237 ADT7411_REG_VDD_MSB, 2);238 if (ret < 0)239 return ret;240 *val = ret * 7000 / 1024;241 return 0;242 case hwmon_in_min:243 ret = i2c_smbus_read_byte_data(client, ADT7411_REG_VDD_LOW);244 if (ret < 0)245 return ret;246 *val = ret * 7000 / 256;247 return 0;248 case hwmon_in_max:249 ret = i2c_smbus_read_byte_data(client, ADT7411_REG_VDD_HIGH);250 if (ret < 0)251 return ret;252 *val = ret * 7000 / 256;253 return 0;254 case hwmon_in_alarm:255 return adt7411_read_in_alarm(dev, 0, val);256 default:257 return -EOPNOTSUPP;258 }259}260 261static int adt7411_update_vref(struct device *dev)262{263 struct adt7411_data *data = dev_get_drvdata(dev);264 struct i2c_client *client = data->client;265 int val;266 267 if (time_after_eq(jiffies, data->next_update)) {268 val = i2c_smbus_read_byte_data(client, ADT7411_REG_CFG3);269 if (val < 0)270 return val;271 272 if (val & ADT7411_CFG3_REF_VDD) {273 val = adt7411_read_in_vdd(dev, hwmon_in_input,274 &data->vref_cached);275 if (val < 0)276 return val;277 } else {278 data->vref_cached = 2250;279 }280 281 data->next_update = jiffies + HZ;282 }283 284 return 0;285}286 287static int adt7411_read_in_chan(struct device *dev, u32 attr, int channel,288 long *val)289{290 struct adt7411_data *data = dev_get_drvdata(dev);291 struct i2c_client *client = data->client;292 293 int ret;294 int reg, lsb_reg, lsb_shift;295 int nr = channel - 1;296 297 mutex_lock(&data->update_lock);298 ret = adt7411_update_vref(dev);299 if (ret < 0)300 goto exit_unlock;301 302 switch (attr) {303 case hwmon_in_input:304 lsb_reg = ADT7411_REG_EXT_TEMP_AIN14_LSB + (nr >> 2);305 lsb_shift = 2 * (nr & 0x03);306 ret = adt7411_read_10_bit(client, lsb_reg,307 ADT7411_REG_EXT_TEMP_AIN1_MSB + nr,308 lsb_shift);309 if (ret < 0)310 goto exit_unlock;311 *val = ret * data->vref_cached / 1024;312 ret = 0;313 break;314 case hwmon_in_min:315 case hwmon_in_max:316 reg = (attr == hwmon_in_min)317 ? ADT7411_REG_IN_LOW(channel)318 : ADT7411_REG_IN_HIGH(channel);319 ret = i2c_smbus_read_byte_data(client, reg);320 if (ret < 0)321 goto exit_unlock;322 *val = ret * data->vref_cached / 256;323 ret = 0;324 break;325 case hwmon_in_alarm:326 ret = adt7411_read_in_alarm(dev, channel, val);327 break;328 default:329 ret = -EOPNOTSUPP;330 break;331 }332 exit_unlock:333 mutex_unlock(&data->update_lock);334 return ret;335}336 337static int adt7411_read_in(struct device *dev, u32 attr, int channel,338 long *val)339{340 if (channel == 0)341 return adt7411_read_in_vdd(dev, attr, val);342 else343 return adt7411_read_in_chan(dev, attr, channel, val);344}345 346 347static int adt7411_read_temp_alarm(struct device *dev, u32 attr, int channel,348 long *val)349{350 struct adt7411_data *data = dev_get_drvdata(dev);351 struct i2c_client *client = data->client;352 int ret, bit;353 354 ret = i2c_smbus_read_byte_data(client, ADT7411_REG_STAT_1);355 if (ret < 0)356 return ret;357 358 switch (attr) {359 case hwmon_temp_min_alarm:360 bit = channel ? ADT7411_STAT_1_EXT_TEMP_LOW361 : ADT7411_STAT_1_INT_TEMP_LOW;362 break;363 case hwmon_temp_max_alarm:364 bit = channel ? ADT7411_STAT_1_EXT_TEMP_HIGH_AIN1365 : ADT7411_STAT_1_INT_TEMP_HIGH;366 break;367 case hwmon_temp_fault:368 bit = ADT7411_STAT_1_EXT_TEMP_FAULT;369 break;370 default:371 return -EOPNOTSUPP;372 }373 374 *val = !!(ret & bit);375 return 0;376}377 378static int adt7411_read_temp(struct device *dev, u32 attr, int channel,379 long *val)380{381 struct adt7411_data *data = dev_get_drvdata(dev);382 struct i2c_client *client = data->client;383 int ret, reg, regl, regh;384 385 switch (attr) {386 case hwmon_temp_input:387 regl = channel ? ADT7411_REG_EXT_TEMP_AIN14_LSB :388 ADT7411_REG_INT_TEMP_VDD_LSB;389 regh = channel ? ADT7411_REG_EXT_TEMP_AIN1_MSB :390 ADT7411_REG_INT_TEMP_MSB;391 ret = adt7411_read_10_bit(client, regl, regh, 0);392 if (ret < 0)393 return ret;394 ret = ret & 0x200 ? ret - 0x400 : ret; /* 10 bit signed */395 *val = ret * 250;396 return 0;397 case hwmon_temp_min:398 case hwmon_temp_max:399 reg = (attr == hwmon_temp_min)400 ? ADT7411_REG_TEMP_LOW(channel)401 : ADT7411_REG_TEMP_HIGH(channel);402 ret = i2c_smbus_read_byte_data(client, reg);403 if (ret < 0)404 return ret;405 ret = ret & 0x80 ? ret - 0x100 : ret; /* 8 bit signed */406 *val = ret * 1000;407 return 0;408 case hwmon_temp_min_alarm:409 case hwmon_temp_max_alarm:410 case hwmon_temp_fault:411 return adt7411_read_temp_alarm(dev, attr, channel, val);412 default:413 return -EOPNOTSUPP;414 }415}416 417static int adt7411_read(struct device *dev, enum hwmon_sensor_types type,418 u32 attr, int channel, long *val)419{420 switch (type) {421 case hwmon_in:422 return adt7411_read_in(dev, attr, channel, val);423 case hwmon_temp:424 return adt7411_read_temp(dev, attr, channel, val);425 default:426 return -EOPNOTSUPP;427 }428}429 430static int adt7411_write_in_vdd(struct device *dev, u32 attr, long val)431{432 struct adt7411_data *data = dev_get_drvdata(dev);433 struct i2c_client *client = data->client;434 int reg;435 436 val = clamp_val(val, 0, 255 * 7000 / 256);437 val = DIV_ROUND_CLOSEST(val * 256, 7000);438 439 switch (attr) {440 case hwmon_in_min:441 reg = ADT7411_REG_VDD_LOW;442 break;443 case hwmon_in_max:444 reg = ADT7411_REG_VDD_HIGH;445 break;446 default:447 return -EOPNOTSUPP;448 }449 450 return i2c_smbus_write_byte_data(client, reg, val);451}452 453static int adt7411_write_in_chan(struct device *dev, u32 attr, int channel,454 long val)455{456 struct adt7411_data *data = dev_get_drvdata(dev);457 struct i2c_client *client = data->client;458 int ret, reg;459 460 mutex_lock(&data->update_lock);461 ret = adt7411_update_vref(dev);462 if (ret < 0)463 goto exit_unlock;464 val = clamp_val(val, 0, 255 * data->vref_cached / 256);465 val = DIV_ROUND_CLOSEST(val * 256, data->vref_cached);466 467 switch (attr) {468 case hwmon_in_min:469 reg = ADT7411_REG_IN_LOW(channel);470 break;471 case hwmon_in_max:472 reg = ADT7411_REG_IN_HIGH(channel);473 break;474 default:475 ret = -EOPNOTSUPP;476 goto exit_unlock;477 }478 479 ret = i2c_smbus_write_byte_data(client, reg, val);480 exit_unlock:481 mutex_unlock(&data->update_lock);482 return ret;483}484 485static int adt7411_write_in(struct device *dev, u32 attr, int channel,486 long val)487{488 if (channel == 0)489 return adt7411_write_in_vdd(dev, attr, val);490 else491 return adt7411_write_in_chan(dev, attr, channel, val);492}493 494static int adt7411_write_temp(struct device *dev, u32 attr, int channel,495 long val)496{497 struct adt7411_data *data = dev_get_drvdata(dev);498 struct i2c_client *client = data->client;499 int reg;500 501 val = clamp_val(val, -128000, 127000);502 val = DIV_ROUND_CLOSEST(val, 1000);503 504 switch (attr) {505 case hwmon_temp_min:506 reg = ADT7411_REG_TEMP_LOW(channel);507 break;508 case hwmon_temp_max:509 reg = ADT7411_REG_TEMP_HIGH(channel);510 break;511 default:512 return -EOPNOTSUPP;513 }514 515 return i2c_smbus_write_byte_data(client, reg, val);516}517 518static int adt7411_write(struct device *dev, enum hwmon_sensor_types type,519 u32 attr, int channel, long val)520{521 switch (type) {522 case hwmon_in:523 return adt7411_write_in(dev, attr, channel, val);524 case hwmon_temp:525 return adt7411_write_temp(dev, attr, channel, val);526 default:527 return -EOPNOTSUPP;528 }529}530 531static umode_t adt7411_is_visible(const void *_data,532 enum hwmon_sensor_types type,533 u32 attr, int channel)534{535 const struct adt7411_data *data = _data;536 bool visible;537 538 switch (type) {539 case hwmon_in:540 visible = channel == 0 || channel >= 3 || !data->use_ext_temp;541 switch (attr) {542 case hwmon_in_input:543 case hwmon_in_alarm:544 return visible ? S_IRUGO : 0;545 case hwmon_in_min:546 case hwmon_in_max:547 return visible ? S_IRUGO | S_IWUSR : 0;548 }549 break;550 case hwmon_temp:551 visible = channel == 0 || data->use_ext_temp;552 switch (attr) {553 case hwmon_temp_input:554 case hwmon_temp_min_alarm:555 case hwmon_temp_max_alarm:556 case hwmon_temp_fault:557 return visible ? S_IRUGO : 0;558 case hwmon_temp_min:559 case hwmon_temp_max:560 return visible ? S_IRUGO | S_IWUSR : 0;561 }562 break;563 default:564 break;565 }566 return 0;567}568 569static int adt7411_detect(struct i2c_client *client,570 struct i2c_board_info *info)571{572 int val;573 574 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))575 return -ENODEV;576 577 val = i2c_smbus_read_byte_data(client, ADT7411_REG_MANUFACTURER_ID);578 if (val < 0 || val != ADT7411_MANUFACTURER_ID) {579 dev_dbg(&client->dev,580 "Wrong manufacturer ID. Got %d, expected %d\n",581 val, ADT7411_MANUFACTURER_ID);582 return -ENODEV;583 }584 585 val = i2c_smbus_read_byte_data(client, ADT7411_REG_DEVICE_ID);586 if (val < 0 || val != ADT7411_DEVICE_ID) {587 dev_dbg(&client->dev,588 "Wrong device ID. Got %d, expected %d\n",589 val, ADT7411_DEVICE_ID);590 return -ENODEV;591 }592 593 strscpy(info->type, "adt7411", I2C_NAME_SIZE);594 595 return 0;596}597 598static int adt7411_init_device(struct adt7411_data *data)599{600 int ret;601 u8 val;602 603 ret = i2c_smbus_read_byte_data(data->client, ADT7411_REG_CFG3);604 if (ret < 0)605 return ret;606 607 /*608 * We must only write zero to bit 1 and bit 2 and only one to bit 3609 * according to the datasheet.610 */611 val = ret;612 val &= ~(ADT7411_CFG3_RESERVED_BIT1 | ADT7411_CFG3_RESERVED_BIT2);613 val |= ADT7411_CFG3_RESERVED_BIT3;614 615 ret = i2c_smbus_write_byte_data(data->client, ADT7411_REG_CFG3, val);616 if (ret < 0)617 return ret;618 619 ret = i2c_smbus_read_byte_data(data->client, ADT7411_REG_CFG1);620 if (ret < 0)621 return ret;622 623 data->use_ext_temp = ret & ADT7411_CFG1_EXT_TDM;624 625 /*626 * We must only write zero to bit 1 and only one to bit 3 according to627 * the datasheet.628 */629 val = ret;630 val &= ~ADT7411_CFG1_RESERVED_BIT1;631 val |= ADT7411_CFG1_RESERVED_BIT3;632 633 /* enable monitoring */634 val |= ADT7411_CFG1_START_MONITOR;635 636 return i2c_smbus_write_byte_data(data->client, ADT7411_REG_CFG1, val);637}638 639static const struct hwmon_channel_info * const adt7411_info[] = {640 HWMON_CHANNEL_INFO(in,641 HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM,642 HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM,643 HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM,644 HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM,645 HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM,646 HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM,647 HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM,648 HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM,649 HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM),650 HWMON_CHANNEL_INFO(temp,651 HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MIN_ALARM |652 HWMON_T_MAX | HWMON_T_MAX_ALARM,653 HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MIN_ALARM |654 HWMON_T_MAX | HWMON_T_MAX_ALARM | HWMON_T_FAULT),655 NULL656};657 658static const struct hwmon_ops adt7411_hwmon_ops = {659 .is_visible = adt7411_is_visible,660 .read = adt7411_read,661 .write = adt7411_write,662};663 664static const struct hwmon_chip_info adt7411_chip_info = {665 .ops = &adt7411_hwmon_ops,666 .info = adt7411_info,667};668 669static int adt7411_probe(struct i2c_client *client)670{671 struct device *dev = &client->dev;672 struct adt7411_data *data;673 struct device *hwmon_dev;674 int ret;675 676 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);677 if (!data)678 return -ENOMEM;679 680 i2c_set_clientdata(client, data);681 data->client = client;682 mutex_init(&data->device_lock);683 mutex_init(&data->update_lock);684 685 ret = adt7411_init_device(data);686 if (ret < 0)687 return ret;688 689 /* force update on first occasion */690 data->next_update = jiffies;691 692 hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name,693 data,694 &adt7411_chip_info,695 adt7411_groups);696 return PTR_ERR_OR_ZERO(hwmon_dev);697}698 699static const struct i2c_device_id adt7411_id[] = {700 { "adt7411" },701 { }702};703MODULE_DEVICE_TABLE(i2c, adt7411_id);704 705static struct i2c_driver adt7411_driver = {706 .driver = {707 .name = "adt7411",708 },709 .probe = adt7411_probe,710 .id_table = adt7411_id,711 .detect = adt7411_detect,712 .address_list = normal_i2c,713 .class = I2C_CLASS_HWMON,714};715 716module_i2c_driver(adt7411_driver);717 718MODULE_AUTHOR("Sascha Hauer, Wolfram Sang <kernel@pengutronix.de>");719MODULE_DESCRIPTION("ADT7411 driver");720MODULE_LICENSE("GPL v2");721