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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * lm80.c - From lm_sensors, Linux kernel modules for hardware4 * monitoring5 * Copyright (C) 1998, 1999 Frodo Looijaard <frodol@dds.nl>6 * and Philip Edelbrock <phil@netroedge.com>7 *8 * Ported to Linux 2.6 by Tiago Sousa <mirage@kaotik.org>9 */10 11#include <linux/module.h>12#include <linux/init.h>13#include <linux/slab.h>14#include <linux/jiffies.h>15#include <linux/i2c.h>16#include <linux/hwmon.h>17#include <linux/hwmon-sysfs.h>18#include <linux/err.h>19#include <linux/mutex.h>20 21/* Addresses to scan */22static const unsigned short normal_i2c[] = { 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d,23 0x2e, 0x2f, I2C_CLIENT_END };24 25/* Many LM80 constants specified below */26 27/* The LM80 registers */28#define LM80_REG_IN_MAX(nr) (0x2a + (nr) * 2)29#define LM80_REG_IN_MIN(nr) (0x2b + (nr) * 2)30#define LM80_REG_IN(nr) (0x20 + (nr))31 32#define LM80_REG_FAN1 0x2833#define LM80_REG_FAN2 0x2934#define LM80_REG_FAN_MIN(nr) (0x3b + (nr))35 36#define LM80_REG_TEMP 0x2737#define LM80_REG_TEMP_HOT_MAX 0x3838#define LM80_REG_TEMP_HOT_HYST 0x3939#define LM80_REG_TEMP_OS_MAX 0x3a40#define LM80_REG_TEMP_OS_HYST 0x3b41 42#define LM80_REG_CONFIG 0x0043#define LM80_REG_ALARM1 0x0144#define LM80_REG_ALARM2 0x0245#define LM80_REG_MASK1 0x0346#define LM80_REG_MASK2 0x0447#define LM80_REG_FANDIV 0x0548#define LM80_REG_RES 0x0649 50#define LM96080_REG_CONV_RATE 0x0751#define LM96080_REG_MAN_ID 0x3e52#define LM96080_REG_DEV_ID 0x3f53 54 55/*56 * Conversions. Rounding and limit checking is only done on the TO_REG57 * variants. Note that you should be a bit careful with which arguments58 * these macros are called: arguments may be evaluated more than once.59 * Fixing this is just not worth it.60 */61 62#define IN_TO_REG(val) (clamp_val(((val) + 5) / 10, 0, 255))63#define IN_FROM_REG(val) ((val) * 10)64 65static inline unsigned char FAN_TO_REG(unsigned rpm, unsigned div)66{67 if (rpm == 0)68 return 255;69 rpm = clamp_val(rpm, 1, 1000000);70 return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);71}72 73#define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : \74 (val) == 255 ? 0 : 1350000/((div) * (val)))75 76#define TEMP_FROM_REG(reg) ((reg) * 125 / 32)77#define TEMP_TO_REG(temp) (DIV_ROUND_CLOSEST(clamp_val((temp), \78 -128000, 127000), 1000) << 8)79 80#define DIV_FROM_REG(val) (1 << (val))81 82enum temp_index {83 t_input = 0,84 t_hot_max,85 t_hot_hyst,86 t_os_max,87 t_os_hyst,88 t_num_temp89};90 91static const u8 temp_regs[t_num_temp] = {92 [t_input] = LM80_REG_TEMP,93 [t_hot_max] = LM80_REG_TEMP_HOT_MAX,94 [t_hot_hyst] = LM80_REG_TEMP_HOT_HYST,95 [t_os_max] = LM80_REG_TEMP_OS_MAX,96 [t_os_hyst] = LM80_REG_TEMP_OS_HYST,97};98 99enum in_index {100 i_input = 0,101 i_max,102 i_min,103 i_num_in104};105 106enum fan_index {107 f_input,108 f_min,109 f_num_fan110};111 112/*113 * Client data (each client gets its own)114 */115 116struct lm80_data {117 struct i2c_client *client;118 struct mutex update_lock;119 char error; /* !=0 if error occurred during last update */120 bool valid; /* true if following fields are valid */121 unsigned long last_updated; /* In jiffies */122 123 u8 in[i_num_in][7]; /* Register value, 1st index is enum in_index */124 u8 fan[f_num_fan][2]; /* Register value, 1st index enum fan_index */125 u8 fan_div[2]; /* Register encoding, shifted right */126 s16 temp[t_num_temp]; /* Register values, normalized to 16 bit */127 u16 alarms; /* Register encoding, combined */128};129 130static int lm80_read_value(struct i2c_client *client, u8 reg)131{132 return i2c_smbus_read_byte_data(client, reg);133}134 135static int lm80_write_value(struct i2c_client *client, u8 reg, u8 value)136{137 return i2c_smbus_write_byte_data(client, reg, value);138}139 140/* Called when we have found a new LM80 and after read errors */141static void lm80_init_client(struct i2c_client *client)142{143 /*144 * Reset all except Watchdog values and last conversion values145 * This sets fan-divs to 2, among others. This makes most other146 * initializations unnecessary147 */148 lm80_write_value(client, LM80_REG_CONFIG, 0x80);149 /* Set 11-bit temperature resolution */150 lm80_write_value(client, LM80_REG_RES, 0x08);151 152 /* Start monitoring */153 lm80_write_value(client, LM80_REG_CONFIG, 0x01);154}155 156static struct lm80_data *lm80_update_device(struct device *dev)157{158 struct lm80_data *data = dev_get_drvdata(dev);159 struct i2c_client *client = data->client;160 int i;161 int rv;162 int prev_rv;163 struct lm80_data *ret = data;164 165 mutex_lock(&data->update_lock);166 167 if (data->error)168 lm80_init_client(client);169 170 if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {171 dev_dbg(dev, "Starting lm80 update\n");172 for (i = 0; i <= 6; i++) {173 rv = lm80_read_value(client, LM80_REG_IN(i));174 if (rv < 0)175 goto abort;176 data->in[i_input][i] = rv;177 178 rv = lm80_read_value(client, LM80_REG_IN_MIN(i));179 if (rv < 0)180 goto abort;181 data->in[i_min][i] = rv;182 183 rv = lm80_read_value(client, LM80_REG_IN_MAX(i));184 if (rv < 0)185 goto abort;186 data->in[i_max][i] = rv;187 }188 189 rv = lm80_read_value(client, LM80_REG_FAN1);190 if (rv < 0)191 goto abort;192 data->fan[f_input][0] = rv;193 194 rv = lm80_read_value(client, LM80_REG_FAN_MIN(1));195 if (rv < 0)196 goto abort;197 data->fan[f_min][0] = rv;198 199 rv = lm80_read_value(client, LM80_REG_FAN2);200 if (rv < 0)201 goto abort;202 data->fan[f_input][1] = rv;203 204 rv = lm80_read_value(client, LM80_REG_FAN_MIN(2));205 if (rv < 0)206 goto abort;207 data->fan[f_min][1] = rv;208 209 prev_rv = rv = lm80_read_value(client, LM80_REG_TEMP);210 if (rv < 0)211 goto abort;212 rv = lm80_read_value(client, LM80_REG_RES);213 if (rv < 0)214 goto abort;215 data->temp[t_input] = (prev_rv << 8) | (rv & 0xf0);216 217 for (i = t_input + 1; i < t_num_temp; i++) {218 rv = lm80_read_value(client, temp_regs[i]);219 if (rv < 0)220 goto abort;221 data->temp[i] = rv << 8;222 }223 224 rv = lm80_read_value(client, LM80_REG_FANDIV);225 if (rv < 0)226 goto abort;227 data->fan_div[0] = (rv >> 2) & 0x03;228 data->fan_div[1] = (rv >> 4) & 0x03;229 230 prev_rv = rv = lm80_read_value(client, LM80_REG_ALARM1);231 if (rv < 0)232 goto abort;233 rv = lm80_read_value(client, LM80_REG_ALARM2);234 if (rv < 0)235 goto abort;236 data->alarms = prev_rv + (rv << 8);237 238 data->last_updated = jiffies;239 data->valid = true;240 data->error = 0;241 }242 goto done;243 244abort:245 ret = ERR_PTR(rv);246 data->valid = false;247 data->error = 1;248 249done:250 mutex_unlock(&data->update_lock);251 252 return ret;253}254 255/*256 * Sysfs stuff257 */258 259static ssize_t in_show(struct device *dev, struct device_attribute *attr,260 char *buf)261{262 struct lm80_data *data = lm80_update_device(dev);263 int index = to_sensor_dev_attr_2(attr)->index;264 int nr = to_sensor_dev_attr_2(attr)->nr;265 266 if (IS_ERR(data))267 return PTR_ERR(data);268 return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr][index]));269}270 271static ssize_t in_store(struct device *dev, struct device_attribute *attr,272 const char *buf, size_t count)273{274 struct lm80_data *data = dev_get_drvdata(dev);275 struct i2c_client *client = data->client;276 int index = to_sensor_dev_attr_2(attr)->index;277 int nr = to_sensor_dev_attr_2(attr)->nr;278 long val;279 u8 reg;280 int err = kstrtol(buf, 10, &val);281 if (err < 0)282 return err;283 284 reg = nr == i_min ? LM80_REG_IN_MIN(index) : LM80_REG_IN_MAX(index);285 286 mutex_lock(&data->update_lock);287 data->in[nr][index] = IN_TO_REG(val);288 lm80_write_value(client, reg, data->in[nr][index]);289 mutex_unlock(&data->update_lock);290 return count;291}292 293static ssize_t fan_show(struct device *dev, struct device_attribute *attr,294 char *buf)295{296 int index = to_sensor_dev_attr_2(attr)->index;297 int nr = to_sensor_dev_attr_2(attr)->nr;298 struct lm80_data *data = lm80_update_device(dev);299 if (IS_ERR(data))300 return PTR_ERR(data);301 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr][index],302 DIV_FROM_REG(data->fan_div[index])));303}304 305static ssize_t fan_div_show(struct device *dev, struct device_attribute *attr,306 char *buf)307{308 int nr = to_sensor_dev_attr(attr)->index;309 struct lm80_data *data = lm80_update_device(dev);310 if (IS_ERR(data))311 return PTR_ERR(data);312 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));313}314 315static ssize_t fan_store(struct device *dev, struct device_attribute *attr,316 const char *buf, size_t count)317{318 int index = to_sensor_dev_attr_2(attr)->index;319 int nr = to_sensor_dev_attr_2(attr)->nr;320 struct lm80_data *data = dev_get_drvdata(dev);321 struct i2c_client *client = data->client;322 unsigned long val;323 int err = kstrtoul(buf, 10, &val);324 if (err < 0)325 return err;326 327 mutex_lock(&data->update_lock);328 data->fan[nr][index] = FAN_TO_REG(val,329 DIV_FROM_REG(data->fan_div[index]));330 lm80_write_value(client, LM80_REG_FAN_MIN(index + 1),331 data->fan[nr][index]);332 mutex_unlock(&data->update_lock);333 return count;334}335 336/*337 * Note: we save and restore the fan minimum here, because its value is338 * determined in part by the fan divisor. This follows the principle of339 * least surprise; the user doesn't expect the fan minimum to change just340 * because the divisor changed.341 */342static ssize_t fan_div_store(struct device *dev,343 struct device_attribute *attr, const char *buf,344 size_t count)345{346 int nr = to_sensor_dev_attr(attr)->index;347 struct lm80_data *data = dev_get_drvdata(dev);348 struct i2c_client *client = data->client;349 unsigned long min, val;350 u8 reg;351 int rv;352 353 rv = kstrtoul(buf, 10, &val);354 if (rv < 0)355 return rv;356 357 /* Save fan_min */358 mutex_lock(&data->update_lock);359 min = FAN_FROM_REG(data->fan[f_min][nr],360 DIV_FROM_REG(data->fan_div[nr]));361 362 switch (val) {363 case 1:364 data->fan_div[nr] = 0;365 break;366 case 2:367 data->fan_div[nr] = 1;368 break;369 case 4:370 data->fan_div[nr] = 2;371 break;372 case 8:373 data->fan_div[nr] = 3;374 break;375 default:376 dev_err(dev,377 "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n",378 val);379 mutex_unlock(&data->update_lock);380 return -EINVAL;381 }382 383 rv = lm80_read_value(client, LM80_REG_FANDIV);384 if (rv < 0) {385 mutex_unlock(&data->update_lock);386 return rv;387 }388 reg = (rv & ~(3 << (2 * (nr + 1))))389 | (data->fan_div[nr] << (2 * (nr + 1)));390 lm80_write_value(client, LM80_REG_FANDIV, reg);391 392 /* Restore fan_min */393 data->fan[f_min][nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));394 lm80_write_value(client, LM80_REG_FAN_MIN(nr + 1),395 data->fan[f_min][nr]);396 mutex_unlock(&data->update_lock);397 398 return count;399}400 401static ssize_t temp_show(struct device *dev, struct device_attribute *devattr,402 char *buf)403{404 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);405 struct lm80_data *data = lm80_update_device(dev);406 if (IS_ERR(data))407 return PTR_ERR(data);408 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[attr->index]));409}410 411static ssize_t temp_store(struct device *dev,412 struct device_attribute *devattr, const char *buf,413 size_t count)414{415 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);416 struct lm80_data *data = dev_get_drvdata(dev);417 struct i2c_client *client = data->client;418 int nr = attr->index;419 long val;420 int err = kstrtol(buf, 10, &val);421 if (err < 0)422 return err;423 424 mutex_lock(&data->update_lock);425 data->temp[nr] = TEMP_TO_REG(val);426 lm80_write_value(client, temp_regs[nr], data->temp[nr] >> 8);427 mutex_unlock(&data->update_lock);428 return count;429}430 431static ssize_t alarms_show(struct device *dev, struct device_attribute *attr,432 char *buf)433{434 struct lm80_data *data = lm80_update_device(dev);435 if (IS_ERR(data))436 return PTR_ERR(data);437 return sprintf(buf, "%u\n", data->alarms);438}439 440static ssize_t alarm_show(struct device *dev, struct device_attribute *attr,441 char *buf)442{443 int bitnr = to_sensor_dev_attr(attr)->index;444 struct lm80_data *data = lm80_update_device(dev);445 if (IS_ERR(data))446 return PTR_ERR(data);447 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);448}449 450static SENSOR_DEVICE_ATTR_2_RW(in0_min, in, i_min, 0);451static SENSOR_DEVICE_ATTR_2_RW(in1_min, in, i_min, 1);452static SENSOR_DEVICE_ATTR_2_RW(in2_min, in, i_min, 2);453static SENSOR_DEVICE_ATTR_2_RW(in3_min, in, i_min, 3);454static SENSOR_DEVICE_ATTR_2_RW(in4_min, in, i_min, 4);455static SENSOR_DEVICE_ATTR_2_RW(in5_min, in, i_min, 5);456static SENSOR_DEVICE_ATTR_2_RW(in6_min, in, i_min, 6);457static SENSOR_DEVICE_ATTR_2_RW(in0_max, in, i_max, 0);458static SENSOR_DEVICE_ATTR_2_RW(in1_max, in, i_max, 1);459static SENSOR_DEVICE_ATTR_2_RW(in2_max, in, i_max, 2);460static SENSOR_DEVICE_ATTR_2_RW(in3_max, in, i_max, 3);461static SENSOR_DEVICE_ATTR_2_RW(in4_max, in, i_max, 4);462static SENSOR_DEVICE_ATTR_2_RW(in5_max, in, i_max, 5);463static SENSOR_DEVICE_ATTR_2_RW(in6_max, in, i_max, 6);464static SENSOR_DEVICE_ATTR_2_RO(in0_input, in, i_input, 0);465static SENSOR_DEVICE_ATTR_2_RO(in1_input, in, i_input, 1);466static SENSOR_DEVICE_ATTR_2_RO(in2_input, in, i_input, 2);467static SENSOR_DEVICE_ATTR_2_RO(in3_input, in, i_input, 3);468static SENSOR_DEVICE_ATTR_2_RO(in4_input, in, i_input, 4);469static SENSOR_DEVICE_ATTR_2_RO(in5_input, in, i_input, 5);470static SENSOR_DEVICE_ATTR_2_RO(in6_input, in, i_input, 6);471static SENSOR_DEVICE_ATTR_2_RW(fan1_min, fan, f_min, 0);472static SENSOR_DEVICE_ATTR_2_RW(fan2_min, fan, f_min, 1);473static SENSOR_DEVICE_ATTR_2_RO(fan1_input, fan, f_input, 0);474static SENSOR_DEVICE_ATTR_2_RO(fan2_input, fan, f_input, 1);475static SENSOR_DEVICE_ATTR_RW(fan1_div, fan_div, 0);476static SENSOR_DEVICE_ATTR_RW(fan2_div, fan_div, 1);477static SENSOR_DEVICE_ATTR_RO(temp1_input, temp, t_input);478static SENSOR_DEVICE_ATTR_RW(temp1_max, temp, t_hot_max);479static SENSOR_DEVICE_ATTR_RW(temp1_max_hyst, temp, t_hot_hyst);480static SENSOR_DEVICE_ATTR_RW(temp1_crit, temp, t_os_max);481static SENSOR_DEVICE_ATTR_RW(temp1_crit_hyst, temp, t_os_hyst);482static DEVICE_ATTR_RO(alarms);483static SENSOR_DEVICE_ATTR_RO(in0_alarm, alarm, 0);484static SENSOR_DEVICE_ATTR_RO(in1_alarm, alarm, 1);485static SENSOR_DEVICE_ATTR_RO(in2_alarm, alarm, 2);486static SENSOR_DEVICE_ATTR_RO(in3_alarm, alarm, 3);487static SENSOR_DEVICE_ATTR_RO(in4_alarm, alarm, 4);488static SENSOR_DEVICE_ATTR_RO(in5_alarm, alarm, 5);489static SENSOR_DEVICE_ATTR_RO(in6_alarm, alarm, 6);490static SENSOR_DEVICE_ATTR_RO(fan1_alarm, alarm, 10);491static SENSOR_DEVICE_ATTR_RO(fan2_alarm, alarm, 11);492static SENSOR_DEVICE_ATTR_RO(temp1_max_alarm, alarm, 8);493static SENSOR_DEVICE_ATTR_RO(temp1_crit_alarm, alarm, 13);494 495/*496 * Real code497 */498 499static struct attribute *lm80_attrs[] = {500 &sensor_dev_attr_in0_min.dev_attr.attr,501 &sensor_dev_attr_in1_min.dev_attr.attr,502 &sensor_dev_attr_in2_min.dev_attr.attr,503 &sensor_dev_attr_in3_min.dev_attr.attr,504 &sensor_dev_attr_in4_min.dev_attr.attr,505 &sensor_dev_attr_in5_min.dev_attr.attr,506 &sensor_dev_attr_in6_min.dev_attr.attr,507 &sensor_dev_attr_in0_max.dev_attr.attr,508 &sensor_dev_attr_in1_max.dev_attr.attr,509 &sensor_dev_attr_in2_max.dev_attr.attr,510 &sensor_dev_attr_in3_max.dev_attr.attr,511 &sensor_dev_attr_in4_max.dev_attr.attr,512 &sensor_dev_attr_in5_max.dev_attr.attr,513 &sensor_dev_attr_in6_max.dev_attr.attr,514 &sensor_dev_attr_in0_input.dev_attr.attr,515 &sensor_dev_attr_in1_input.dev_attr.attr,516 &sensor_dev_attr_in2_input.dev_attr.attr,517 &sensor_dev_attr_in3_input.dev_attr.attr,518 &sensor_dev_attr_in4_input.dev_attr.attr,519 &sensor_dev_attr_in5_input.dev_attr.attr,520 &sensor_dev_attr_in6_input.dev_attr.attr,521 &sensor_dev_attr_fan1_min.dev_attr.attr,522 &sensor_dev_attr_fan2_min.dev_attr.attr,523 &sensor_dev_attr_fan1_input.dev_attr.attr,524 &sensor_dev_attr_fan2_input.dev_attr.attr,525 &sensor_dev_attr_fan1_div.dev_attr.attr,526 &sensor_dev_attr_fan2_div.dev_attr.attr,527 &sensor_dev_attr_temp1_input.dev_attr.attr,528 &sensor_dev_attr_temp1_max.dev_attr.attr,529 &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,530 &sensor_dev_attr_temp1_crit.dev_attr.attr,531 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,532 &dev_attr_alarms.attr,533 &sensor_dev_attr_in0_alarm.dev_attr.attr,534 &sensor_dev_attr_in1_alarm.dev_attr.attr,535 &sensor_dev_attr_in2_alarm.dev_attr.attr,536 &sensor_dev_attr_in3_alarm.dev_attr.attr,537 &sensor_dev_attr_in4_alarm.dev_attr.attr,538 &sensor_dev_attr_in5_alarm.dev_attr.attr,539 &sensor_dev_attr_in6_alarm.dev_attr.attr,540 &sensor_dev_attr_fan1_alarm.dev_attr.attr,541 &sensor_dev_attr_fan2_alarm.dev_attr.attr,542 &sensor_dev_attr_temp1_max_alarm.dev_attr.attr,543 &sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,544 NULL545};546ATTRIBUTE_GROUPS(lm80);547 548/* Return 0 if detection is successful, -ENODEV otherwise */549static int lm80_detect(struct i2c_client *client, struct i2c_board_info *info)550{551 struct i2c_adapter *adapter = client->adapter;552 int i, cur, man_id, dev_id;553 const char *name = NULL;554 555 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))556 return -ENODEV;557 558 /* First check for unused bits, common to both chip types */559 if ((lm80_read_value(client, LM80_REG_ALARM2) & 0xc0)560 || (lm80_read_value(client, LM80_REG_CONFIG) & 0x80))561 return -ENODEV;562 563 /*564 * The LM96080 has manufacturer and stepping/die rev registers so we565 * can just check that. The LM80 does not have such registers so we566 * have to use a more expensive trick.567 */568 man_id = lm80_read_value(client, LM96080_REG_MAN_ID);569 dev_id = lm80_read_value(client, LM96080_REG_DEV_ID);570 if (man_id == 0x01 && dev_id == 0x08) {571 /* Check more unused bits for confirmation */572 if (lm80_read_value(client, LM96080_REG_CONV_RATE) & 0xfe)573 return -ENODEV;574 575 name = "lm96080";576 } else {577 /* Check 6-bit addressing */578 for (i = 0x2a; i <= 0x3d; i++) {579 cur = i2c_smbus_read_byte_data(client, i);580 if ((i2c_smbus_read_byte_data(client, i + 0x40) != cur)581 || (i2c_smbus_read_byte_data(client, i + 0x80) != cur)582 || (i2c_smbus_read_byte_data(client, i + 0xc0) != cur))583 return -ENODEV;584 }585 586 name = "lm80";587 }588 589 strscpy(info->type, name, I2C_NAME_SIZE);590 591 return 0;592}593 594static int lm80_probe(struct i2c_client *client)595{596 struct device *dev = &client->dev;597 struct device *hwmon_dev;598 struct lm80_data *data;599 600 data = devm_kzalloc(dev, sizeof(struct lm80_data), GFP_KERNEL);601 if (!data)602 return -ENOMEM;603 604 data->client = client;605 mutex_init(&data->update_lock);606 607 /* Initialize the LM80 chip */608 lm80_init_client(client);609 610 /* A few vars need to be filled upon startup */611 data->fan[f_min][0] = lm80_read_value(client, LM80_REG_FAN_MIN(1));612 data->fan[f_min][1] = lm80_read_value(client, LM80_REG_FAN_MIN(2));613 614 hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,615 data, lm80_groups);616 617 return PTR_ERR_OR_ZERO(hwmon_dev);618}619 620/*621 * Driver data (common to all clients)622 */623 624static const struct i2c_device_id lm80_id[] = {625 { "lm80", 0 },626 { "lm96080", 1 },627 { }628};629MODULE_DEVICE_TABLE(i2c, lm80_id);630 631static struct i2c_driver lm80_driver = {632 .class = I2C_CLASS_HWMON,633 .driver = {634 .name = "lm80",635 },636 .probe = lm80_probe,637 .id_table = lm80_id,638 .detect = lm80_detect,639 .address_list = normal_i2c,640};641 642module_i2c_driver(lm80_driver);643 644MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl> and "645 "Philip Edelbrock <phil@netroedge.com>");646MODULE_DESCRIPTION("LM80 driver");647MODULE_LICENSE("GPL");648