2 * Driver for Texas Instruments / National Semiconductor LM95234
4 * Copyright (c) 2013, 2014 Guenter Roeck <linux@roeck-us.net>
6 * Derived from lm95241.c
7 * Copyright (C) 2008, 2010 Davide Rizzo <elpa.rizzo@gmail.com>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
20 #include <linux/module.h>
21 #include <linux/init.h>
22 #include <linux/slab.h>
23 #include <linux/jiffies.h>
24 #include <linux/i2c.h>
25 #include <linux/hwmon.h>
26 #include <linux/hwmon-sysfs.h>
27 #include <linux/err.h>
28 #include <linux/mutex.h>
29 #include <linux/sysfs.h>
31 #define DRVNAME "lm95234"
33 enum chips { lm95233, lm95234 };
35 static const unsigned short normal_i2c[] = {
36 0x18, 0x2a, 0x2b, 0x4d, 0x4e, I2C_CLIENT_END };
38 /* LM95234 registers */
39 #define LM95234_REG_MAN_ID 0xFE
40 #define LM95234_REG_CHIP_ID 0xFF
41 #define LM95234_REG_STATUS 0x02
42 #define LM95234_REG_CONFIG 0x03
43 #define LM95234_REG_CONVRATE 0x04
44 #define LM95234_REG_STS_FAULT 0x07
45 #define LM95234_REG_STS_TCRIT1 0x08
46 #define LM95234_REG_STS_TCRIT2 0x09
47 #define LM95234_REG_TEMPH(x) ((x) + 0x10)
48 #define LM95234_REG_TEMPL(x) ((x) + 0x20)
49 #define LM95234_REG_UTEMPH(x) ((x) + 0x19) /* Remote only */
50 #define LM95234_REG_UTEMPL(x) ((x) + 0x29)
51 #define LM95234_REG_REM_MODEL 0x30
52 #define LM95234_REG_REM_MODEL_STS 0x38
53 #define LM95234_REG_OFFSET(x) ((x) + 0x31) /* Remote only */
54 #define LM95234_REG_TCRIT1(x) ((x) + 0x40)
55 #define LM95234_REG_TCRIT2(x) ((x) + 0x49) /* Remote channel 1,2 */
56 #define LM95234_REG_TCRIT_HYST 0x5a
58 #define NATSEMI_MAN_ID 0x01
59 #define LM95233_CHIP_ID 0x89
60 #define LM95234_CHIP_ID 0x79
62 /* Client data (each client gets its own) */
64 struct i2c_client *client;
65 const struct attribute_group *groups[3];
66 struct mutex update_lock;
67 unsigned long last_updated, interval; /* in jiffies */
68 bool valid; /* false until following fields are valid */
69 /* registers values */
70 int temp[5]; /* temperature (signed) */
71 u32 status; /* fault/alarm status */
72 u8 tcrit1[5]; /* critical temperature limit */
73 u8 tcrit2[2]; /* high temperature limit */
74 s8 toffset[4]; /* remote temperature offset */
75 u8 thyst; /* common hysteresis */
77 u8 sensor_type; /* temperature sensor type */
80 static int lm95234_read_temp(struct i2c_client *client, int index, int *t)
86 val = i2c_smbus_read_byte_data(client,
87 LM95234_REG_UTEMPH(index - 1));
91 val = i2c_smbus_read_byte_data(client,
92 LM95234_REG_UTEMPL(index - 1));
99 * Read signed temperature if unsigned temperature is 0,
100 * or if this is the local sensor.
103 val = i2c_smbus_read_byte_data(client,
104 LM95234_REG_TEMPH(index));
108 val = i2c_smbus_read_byte_data(client,
109 LM95234_REG_TEMPL(index));
118 static u16 update_intervals[] = { 143, 364, 1000, 2500 };
120 /* Fill value cache. Must be called with update lock held. */
122 static int lm95234_fill_cache(struct lm95234_data *data,
123 struct i2c_client *client)
127 ret = i2c_smbus_read_byte_data(client, LM95234_REG_CONVRATE);
131 data->interval = msecs_to_jiffies(update_intervals[ret & 0x03]);
133 for (i = 0; i < ARRAY_SIZE(data->tcrit1); i++) {
134 ret = i2c_smbus_read_byte_data(client, LM95234_REG_TCRIT1(i));
137 data->tcrit1[i] = ret;
139 for (i = 0; i < ARRAY_SIZE(data->tcrit2); i++) {
140 ret = i2c_smbus_read_byte_data(client, LM95234_REG_TCRIT2(i));
143 data->tcrit2[i] = ret;
145 for (i = 0; i < ARRAY_SIZE(data->toffset); i++) {
146 ret = i2c_smbus_read_byte_data(client, LM95234_REG_OFFSET(i));
149 data->toffset[i] = ret;
152 ret = i2c_smbus_read_byte_data(client, LM95234_REG_TCRIT_HYST);
157 ret = i2c_smbus_read_byte_data(client, LM95234_REG_REM_MODEL);
160 data->sensor_type = ret;
165 static int lm95234_update_device(struct lm95234_data *data)
167 struct i2c_client *client = data->client;
170 mutex_lock(&data->update_lock);
172 if (time_after(jiffies, data->last_updated + data->interval) ||
177 ret = lm95234_fill_cache(data, client);
183 for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
184 ret = lm95234_read_temp(client, i, &data->temp[i]);
189 ret = i2c_smbus_read_byte_data(client, LM95234_REG_STS_FAULT);
194 ret = i2c_smbus_read_byte_data(client, LM95234_REG_STS_TCRIT1);
197 data->status |= ret << 8;
199 ret = i2c_smbus_read_byte_data(client, LM95234_REG_STS_TCRIT2);
202 data->status |= ret << 16;
204 data->last_updated = jiffies;
209 mutex_unlock(&data->update_lock);
214 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
217 struct lm95234_data *data = dev_get_drvdata(dev);
218 int index = to_sensor_dev_attr(attr)->index;
219 int ret = lm95234_update_device(data);
224 return sprintf(buf, "%d\n",
225 DIV_ROUND_CLOSEST(data->temp[index] * 125, 32));
228 static ssize_t show_alarm(struct device *dev,
229 struct device_attribute *attr, char *buf)
231 struct lm95234_data *data = dev_get_drvdata(dev);
232 u32 mask = to_sensor_dev_attr(attr)->index;
233 int ret = lm95234_update_device(data);
238 return sprintf(buf, "%u", !!(data->status & mask));
241 static ssize_t show_type(struct device *dev, struct device_attribute *attr,
244 struct lm95234_data *data = dev_get_drvdata(dev);
245 u8 mask = to_sensor_dev_attr(attr)->index;
246 int ret = lm95234_update_device(data);
251 return sprintf(buf, data->sensor_type & mask ? "1\n" : "2\n");
254 static ssize_t set_type(struct device *dev, struct device_attribute *attr,
255 const char *buf, size_t count)
257 struct lm95234_data *data = dev_get_drvdata(dev);
259 u8 mask = to_sensor_dev_attr(attr)->index;
260 int ret = lm95234_update_device(data);
265 ret = kstrtoul(buf, 10, &val);
269 if (val != 1 && val != 2)
272 mutex_lock(&data->update_lock);
274 data->sensor_type |= mask;
276 data->sensor_type &= ~mask;
278 i2c_smbus_write_byte_data(data->client, LM95234_REG_REM_MODEL,
280 mutex_unlock(&data->update_lock);
285 static ssize_t show_tcrit2(struct device *dev, struct device_attribute *attr,
288 struct lm95234_data *data = dev_get_drvdata(dev);
289 int index = to_sensor_dev_attr(attr)->index;
290 int ret = lm95234_update_device(data);
295 return sprintf(buf, "%u", data->tcrit2[index] * 1000);
298 static ssize_t set_tcrit2(struct device *dev, struct device_attribute *attr,
299 const char *buf, size_t count)
301 struct lm95234_data *data = dev_get_drvdata(dev);
302 int index = to_sensor_dev_attr(attr)->index;
304 int ret = lm95234_update_device(data);
309 ret = kstrtol(buf, 10, &val);
313 val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), 0, index ? 255 : 127);
315 mutex_lock(&data->update_lock);
316 data->tcrit2[index] = val;
317 i2c_smbus_write_byte_data(data->client, LM95234_REG_TCRIT2(index), val);
318 mutex_unlock(&data->update_lock);
323 static ssize_t show_tcrit2_hyst(struct device *dev,
324 struct device_attribute *attr, char *buf)
326 struct lm95234_data *data = dev_get_drvdata(dev);
327 int index = to_sensor_dev_attr(attr)->index;
328 int ret = lm95234_update_device(data);
333 /* Result can be negative, so be careful with unsigned operands */
334 return sprintf(buf, "%d",
335 ((int)data->tcrit2[index] - (int)data->thyst) * 1000);
338 static ssize_t show_tcrit1(struct device *dev, struct device_attribute *attr,
341 struct lm95234_data *data = dev_get_drvdata(dev);
342 int index = to_sensor_dev_attr(attr)->index;
344 return sprintf(buf, "%u", data->tcrit1[index] * 1000);
347 static ssize_t set_tcrit1(struct device *dev, struct device_attribute *attr,
348 const char *buf, size_t count)
350 struct lm95234_data *data = dev_get_drvdata(dev);
351 int index = to_sensor_dev_attr(attr)->index;
352 int ret = lm95234_update_device(data);
358 ret = kstrtol(buf, 10, &val);
362 val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), 0, 255);
364 mutex_lock(&data->update_lock);
365 data->tcrit1[index] = val;
366 i2c_smbus_write_byte_data(data->client, LM95234_REG_TCRIT1(index), val);
367 mutex_unlock(&data->update_lock);
372 static ssize_t show_tcrit1_hyst(struct device *dev,
373 struct device_attribute *attr, char *buf)
375 struct lm95234_data *data = dev_get_drvdata(dev);
376 int index = to_sensor_dev_attr(attr)->index;
377 int ret = lm95234_update_device(data);
382 /* Result can be negative, so be careful with unsigned operands */
383 return sprintf(buf, "%d",
384 ((int)data->tcrit1[index] - (int)data->thyst) * 1000);
387 static ssize_t set_tcrit1_hyst(struct device *dev,
388 struct device_attribute *attr,
389 const char *buf, size_t count)
391 struct lm95234_data *data = dev_get_drvdata(dev);
392 int index = to_sensor_dev_attr(attr)->index;
393 int ret = lm95234_update_device(data);
399 ret = kstrtol(buf, 10, &val);
403 val = DIV_ROUND_CLOSEST(val, 1000);
404 val = clamp_val((int)data->tcrit1[index] - val, 0, 31);
406 mutex_lock(&data->update_lock);
408 i2c_smbus_write_byte_data(data->client, LM95234_REG_TCRIT_HYST, val);
409 mutex_unlock(&data->update_lock);
414 static ssize_t show_offset(struct device *dev, struct device_attribute *attr,
417 struct lm95234_data *data = dev_get_drvdata(dev);
418 int index = to_sensor_dev_attr(attr)->index;
419 int ret = lm95234_update_device(data);
424 return sprintf(buf, "%d", data->toffset[index] * 500);
427 static ssize_t set_offset(struct device *dev, struct device_attribute *attr,
428 const char *buf, size_t count)
430 struct lm95234_data *data = dev_get_drvdata(dev);
431 int index = to_sensor_dev_attr(attr)->index;
432 int ret = lm95234_update_device(data);
438 ret = kstrtol(buf, 10, &val);
442 /* Accuracy is 1/2 degrees C */
443 val = clamp_val(DIV_ROUND_CLOSEST(val, 500), -128, 127);
445 mutex_lock(&data->update_lock);
446 data->toffset[index] = val;
447 i2c_smbus_write_byte_data(data->client, LM95234_REG_OFFSET(index), val);
448 mutex_unlock(&data->update_lock);
453 static ssize_t show_interval(struct device *dev, struct device_attribute *attr,
456 struct lm95234_data *data = dev_get_drvdata(dev);
457 int ret = lm95234_update_device(data);
462 return sprintf(buf, "%lu\n",
463 DIV_ROUND_CLOSEST(data->interval * 1000, HZ));
466 static ssize_t set_interval(struct device *dev, struct device_attribute *attr,
467 const char *buf, size_t count)
469 struct lm95234_data *data = dev_get_drvdata(dev);
470 int ret = lm95234_update_device(data);
477 ret = kstrtoul(buf, 10, &val);
481 for (regval = 0; regval < 3; regval++) {
482 if (val <= update_intervals[regval])
486 mutex_lock(&data->update_lock);
487 data->interval = msecs_to_jiffies(update_intervals[regval]);
488 i2c_smbus_write_byte_data(data->client, LM95234_REG_CONVRATE, regval);
489 mutex_unlock(&data->update_lock);
494 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0);
495 static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1);
496 static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2);
497 static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 3);
498 static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, show_temp, NULL, 4);
500 static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL,
502 static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL,
504 static SENSOR_DEVICE_ATTR(temp4_fault, S_IRUGO, show_alarm, NULL,
506 static SENSOR_DEVICE_ATTR(temp5_fault, S_IRUGO, show_alarm, NULL,
509 static SENSOR_DEVICE_ATTR(temp2_type, S_IWUSR | S_IRUGO, show_type, set_type,
511 static SENSOR_DEVICE_ATTR(temp3_type, S_IWUSR | S_IRUGO, show_type, set_type,
513 static SENSOR_DEVICE_ATTR(temp4_type, S_IWUSR | S_IRUGO, show_type, set_type,
515 static SENSOR_DEVICE_ATTR(temp5_type, S_IWUSR | S_IRUGO, show_type, set_type,
518 static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_tcrit1,
520 static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_tcrit2,
522 static SENSOR_DEVICE_ATTR(temp3_max, S_IWUSR | S_IRUGO, show_tcrit2,
524 static SENSOR_DEVICE_ATTR(temp4_max, S_IWUSR | S_IRUGO, show_tcrit1,
526 static SENSOR_DEVICE_ATTR(temp5_max, S_IWUSR | S_IRUGO, show_tcrit1,
529 static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IWUSR | S_IRUGO, show_tcrit1_hyst,
531 static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO, show_tcrit2_hyst, NULL, 0);
532 static SENSOR_DEVICE_ATTR(temp3_max_hyst, S_IRUGO, show_tcrit2_hyst, NULL, 1);
533 static SENSOR_DEVICE_ATTR(temp4_max_hyst, S_IRUGO, show_tcrit1_hyst, NULL, 3);
534 static SENSOR_DEVICE_ATTR(temp5_max_hyst, S_IRUGO, show_tcrit1_hyst, NULL, 4);
536 static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_alarm, NULL,
538 static SENSOR_DEVICE_ATTR(temp2_max_alarm, S_IRUGO, show_alarm, NULL,
540 static SENSOR_DEVICE_ATTR(temp3_max_alarm, S_IRUGO, show_alarm, NULL,
542 static SENSOR_DEVICE_ATTR(temp4_max_alarm, S_IRUGO, show_alarm, NULL,
544 static SENSOR_DEVICE_ATTR(temp5_max_alarm, S_IRUGO, show_alarm, NULL,
547 static SENSOR_DEVICE_ATTR(temp2_crit, S_IWUSR | S_IRUGO, show_tcrit1,
549 static SENSOR_DEVICE_ATTR(temp3_crit, S_IWUSR | S_IRUGO, show_tcrit1,
552 static SENSOR_DEVICE_ATTR(temp2_crit_hyst, S_IRUGO, show_tcrit1_hyst, NULL, 1);
553 static SENSOR_DEVICE_ATTR(temp3_crit_hyst, S_IRUGO, show_tcrit1_hyst, NULL, 2);
555 static SENSOR_DEVICE_ATTR(temp2_crit_alarm, S_IRUGO, show_alarm, NULL,
557 static SENSOR_DEVICE_ATTR(temp3_crit_alarm, S_IRUGO, show_alarm, NULL,
560 static SENSOR_DEVICE_ATTR(temp2_offset, S_IWUSR | S_IRUGO, show_offset,
562 static SENSOR_DEVICE_ATTR(temp3_offset, S_IWUSR | S_IRUGO, show_offset,
564 static SENSOR_DEVICE_ATTR(temp4_offset, S_IWUSR | S_IRUGO, show_offset,
566 static SENSOR_DEVICE_ATTR(temp5_offset, S_IWUSR | S_IRUGO, show_offset,
569 static DEVICE_ATTR(update_interval, S_IWUSR | S_IRUGO, show_interval,
572 static struct attribute *lm95234_common_attrs[] = {
573 &sensor_dev_attr_temp1_input.dev_attr.attr,
574 &sensor_dev_attr_temp2_input.dev_attr.attr,
575 &sensor_dev_attr_temp3_input.dev_attr.attr,
576 &sensor_dev_attr_temp2_fault.dev_attr.attr,
577 &sensor_dev_attr_temp3_fault.dev_attr.attr,
578 &sensor_dev_attr_temp2_type.dev_attr.attr,
579 &sensor_dev_attr_temp3_type.dev_attr.attr,
580 &sensor_dev_attr_temp1_max.dev_attr.attr,
581 &sensor_dev_attr_temp2_max.dev_attr.attr,
582 &sensor_dev_attr_temp3_max.dev_attr.attr,
583 &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
584 &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
585 &sensor_dev_attr_temp3_max_hyst.dev_attr.attr,
586 &sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
587 &sensor_dev_attr_temp2_max_alarm.dev_attr.attr,
588 &sensor_dev_attr_temp3_max_alarm.dev_attr.attr,
589 &sensor_dev_attr_temp2_crit.dev_attr.attr,
590 &sensor_dev_attr_temp3_crit.dev_attr.attr,
591 &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
592 &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
593 &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr,
594 &sensor_dev_attr_temp3_crit_alarm.dev_attr.attr,
595 &sensor_dev_attr_temp2_offset.dev_attr.attr,
596 &sensor_dev_attr_temp3_offset.dev_attr.attr,
597 &dev_attr_update_interval.attr,
601 static const struct attribute_group lm95234_common_group = {
602 .attrs = lm95234_common_attrs,
605 static struct attribute *lm95234_attrs[] = {
606 &sensor_dev_attr_temp4_input.dev_attr.attr,
607 &sensor_dev_attr_temp5_input.dev_attr.attr,
608 &sensor_dev_attr_temp4_fault.dev_attr.attr,
609 &sensor_dev_attr_temp5_fault.dev_attr.attr,
610 &sensor_dev_attr_temp4_type.dev_attr.attr,
611 &sensor_dev_attr_temp5_type.dev_attr.attr,
612 &sensor_dev_attr_temp4_max.dev_attr.attr,
613 &sensor_dev_attr_temp5_max.dev_attr.attr,
614 &sensor_dev_attr_temp4_max_hyst.dev_attr.attr,
615 &sensor_dev_attr_temp5_max_hyst.dev_attr.attr,
616 &sensor_dev_attr_temp4_max_alarm.dev_attr.attr,
617 &sensor_dev_attr_temp5_max_alarm.dev_attr.attr,
618 &sensor_dev_attr_temp4_offset.dev_attr.attr,
619 &sensor_dev_attr_temp5_offset.dev_attr.attr,
623 static const struct attribute_group lm95234_group = {
624 .attrs = lm95234_attrs,
627 static int lm95234_detect(struct i2c_client *client,
628 struct i2c_board_info *info)
630 struct i2c_adapter *adapter = client->adapter;
631 int address = client->addr;
632 u8 config_mask, model_mask;
633 int mfg_id, chip_id, val;
636 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
639 mfg_id = i2c_smbus_read_byte_data(client, LM95234_REG_MAN_ID);
640 if (mfg_id != NATSEMI_MAN_ID)
643 chip_id = i2c_smbus_read_byte_data(client, LM95234_REG_CHIP_ID);
645 case LM95233_CHIP_ID:
646 if (address != 0x18 && address != 0x2a && address != 0x2b)
652 case LM95234_CHIP_ID:
653 if (address != 0x18 && address != 0x4d && address != 0x4e)
663 val = i2c_smbus_read_byte_data(client, LM95234_REG_STATUS);
667 val = i2c_smbus_read_byte_data(client, LM95234_REG_CONFIG);
668 if (val & config_mask)
671 val = i2c_smbus_read_byte_data(client, LM95234_REG_CONVRATE);
675 val = i2c_smbus_read_byte_data(client, LM95234_REG_REM_MODEL);
676 if (val & model_mask)
679 val = i2c_smbus_read_byte_data(client, LM95234_REG_REM_MODEL_STS);
680 if (val & model_mask)
683 strlcpy(info->type, name, I2C_NAME_SIZE);
687 static int lm95234_init_client(struct i2c_client *client)
691 /* start conversion if necessary */
692 val = i2c_smbus_read_byte_data(client, LM95234_REG_CONFIG);
696 i2c_smbus_write_byte_data(client, LM95234_REG_CONFIG,
699 /* If diode type status reports an error, try to fix it */
700 val = i2c_smbus_read_byte_data(client, LM95234_REG_REM_MODEL_STS);
703 model = i2c_smbus_read_byte_data(client, LM95234_REG_REM_MODEL);
707 dev_notice(&client->dev,
708 "Fixing remote diode type misconfiguration (0x%x)\n",
710 i2c_smbus_write_byte_data(client, LM95234_REG_REM_MODEL,
716 static int lm95234_probe(struct i2c_client *client,
717 const struct i2c_device_id *id)
719 struct device *dev = &client->dev;
720 struct lm95234_data *data;
721 struct device *hwmon_dev;
724 data = devm_kzalloc(dev, sizeof(struct lm95234_data), GFP_KERNEL);
728 data->client = client;
729 mutex_init(&data->update_lock);
731 /* Initialize the LM95234 chip */
732 err = lm95234_init_client(client);
736 data->groups[0] = &lm95234_common_group;
737 if (id->driver_data == lm95234)
738 data->groups[1] = &lm95234_group;
740 hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
742 return PTR_ERR_OR_ZERO(hwmon_dev);
745 /* Driver data (common to all clients) */
746 static const struct i2c_device_id lm95234_id[] = {
747 { "lm95233", lm95233 },
748 { "lm95234", lm95234 },
751 MODULE_DEVICE_TABLE(i2c, lm95234_id);
753 static struct i2c_driver lm95234_driver = {
754 .class = I2C_CLASS_HWMON,
758 .probe = lm95234_probe,
759 .id_table = lm95234_id,
760 .detect = lm95234_detect,
761 .address_list = normal_i2c,
764 module_i2c_driver(lm95234_driver);
766 MODULE_AUTHOR("Guenter Roeck <linux@roeck-us.net>");
767 MODULE_DESCRIPTION("LM95233/LM95234 sensor driver");
768 MODULE_LICENSE("GPL");