1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (c) 2012 Guenter Roeck <linux@roeck-us.net>
6 * Copyright (c) 2011 David George <david.george@ska.ac.za>
9 #include <linux/module.h>
10 #include <linux/init.h>
11 #include <linux/slab.h>
12 #include <linux/jiffies.h>
13 #include <linux/i2c.h>
14 #include <linux/hwmon.h>
15 #include <linux/hwmon-sysfs.h>
16 #include <linux/err.h>
17 #include <linux/mutex.h>
18 #include <linux/of_device.h>
21 #include <linux/platform_data/max6697.h>
23 enum chips { max6581, max6602, max6622, max6636, max6689, max6693, max6694,
24 max6697, max6698, max6699 };
26 /* Report local sensor as temp1 */
28 static const u8 MAX6697_REG_TEMP[] = {
29 0x07, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x08 };
30 static const u8 MAX6697_REG_TEMP_EXT[] = {
31 0x57, 0x09, 0x52, 0x53, 0x54, 0x55, 0x56, 0 };
32 static const u8 MAX6697_REG_MAX[] = {
33 0x17, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x18 };
34 static const u8 MAX6697_REG_CRIT[] = {
35 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27 };
38 * Map device tree / platform data register bit map to chip bit map.
39 * Applies to alert register and over-temperature register.
41 #define MAX6697_ALERT_MAP_BITS(reg) ((((reg) & 0x7e) >> 1) | \
42 (((reg) & 0x01) << 6) | ((reg) & 0x80))
43 #define MAX6697_OVERT_MAP_BITS(reg) (((reg) >> 1) | (((reg) & 0x01) << 7))
45 #define MAX6697_REG_STAT(n) (0x44 + (n))
47 #define MAX6697_REG_CONFIG 0x41
48 #define MAX6581_CONF_EXTENDED (1 << 1)
49 #define MAX6693_CONF_BETA (1 << 2)
50 #define MAX6697_CONF_RESISTANCE (1 << 3)
51 #define MAX6697_CONF_TIMEOUT (1 << 5)
52 #define MAX6697_REG_ALERT_MASK 0x42
53 #define MAX6697_REG_OVERT_MASK 0x43
55 #define MAX6581_REG_RESISTANCE 0x4a
56 #define MAX6581_REG_IDEALITY 0x4b
57 #define MAX6581_REG_IDEALITY_SELECT 0x4c
58 #define MAX6581_REG_OFFSET 0x4d
59 #define MAX6581_REG_OFFSET_SELECT 0x4e
61 #define MAX6697_CONV_TIME 156 /* ms per channel, worst case */
63 struct max6697_chip_data {
73 struct i2c_client *client;
76 const struct max6697_chip_data *chip;
78 int update_interval; /* in milli-seconds */
79 int temp_offset; /* in degrees C */
81 struct mutex update_lock;
82 unsigned long last_updated; /* In jiffies */
83 bool valid; /* true if following fields are valid */
85 /* 1x local and up to 7x remote */
86 u8 temp[8][4]; /* [nr][0]=temp [1]=ext [2]=max [3]=crit */
87 #define MAX6697_TEMP_INPUT 0
88 #define MAX6697_TEMP_EXT 1
89 #define MAX6697_TEMP_MAX 2
90 #define MAX6697_TEMP_CRIT 3
94 /* Diode fault status bits on MAX6581 are right shifted by one bit */
95 static const u8 max6581_alarm_map[] = {
96 0, 0, 1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14, 15,
97 16, 17, 18, 19, 20, 21, 22, 23 };
99 static const struct max6697_chip_data max6697_chip_data[] = {
105 .valid_conf = MAX6581_CONF_EXTENDED | MAX6697_CONF_TIMEOUT,
106 .alarm_map = max6581_alarm_map,
113 .valid_conf = MAX6697_CONF_RESISTANCE | MAX6697_CONF_TIMEOUT,
120 .valid_conf = MAX6697_CONF_RESISTANCE | MAX6697_CONF_TIMEOUT,
127 .valid_conf = MAX6697_CONF_RESISTANCE | MAX6697_CONF_TIMEOUT,
134 .valid_conf = MAX6697_CONF_RESISTANCE | MAX6697_CONF_TIMEOUT,
141 .valid_conf = MAX6697_CONF_RESISTANCE | MAX6693_CONF_BETA |
142 MAX6697_CONF_TIMEOUT,
149 .valid_conf = MAX6697_CONF_RESISTANCE | MAX6693_CONF_BETA |
150 MAX6697_CONF_TIMEOUT,
157 .valid_conf = MAX6697_CONF_RESISTANCE | MAX6697_CONF_TIMEOUT,
164 .valid_conf = MAX6697_CONF_RESISTANCE | MAX6697_CONF_TIMEOUT,
171 .valid_conf = MAX6697_CONF_RESISTANCE | MAX6697_CONF_TIMEOUT,
175 static struct max6697_data *max6697_update_device(struct device *dev)
177 struct max6697_data *data = dev_get_drvdata(dev);
178 struct i2c_client *client = data->client;
179 struct max6697_data *ret = data;
184 mutex_lock(&data->update_lock);
187 !time_after(jiffies, data->last_updated
188 + msecs_to_jiffies(data->update_interval)))
191 for (i = 0; i < data->chip->channels; i++) {
192 if (data->chip->have_ext & (1 << i)) {
193 val = i2c_smbus_read_byte_data(client,
194 MAX6697_REG_TEMP_EXT[i]);
195 if (unlikely(val < 0)) {
199 data->temp[i][MAX6697_TEMP_EXT] = val;
202 val = i2c_smbus_read_byte_data(client, MAX6697_REG_TEMP[i]);
203 if (unlikely(val < 0)) {
207 data->temp[i][MAX6697_TEMP_INPUT] = val;
209 val = i2c_smbus_read_byte_data(client, MAX6697_REG_MAX[i]);
210 if (unlikely(val < 0)) {
214 data->temp[i][MAX6697_TEMP_MAX] = val;
216 if (data->chip->have_crit & (1 << i)) {
217 val = i2c_smbus_read_byte_data(client,
218 MAX6697_REG_CRIT[i]);
219 if (unlikely(val < 0)) {
223 data->temp[i][MAX6697_TEMP_CRIT] = val;
228 for (i = 0; i < 3; i++) {
229 val = i2c_smbus_read_byte_data(client, MAX6697_REG_STAT(i));
230 if (unlikely(val < 0)) {
234 alarms = (alarms << 8) | val;
236 data->alarms = alarms;
237 data->last_updated = jiffies;
240 mutex_unlock(&data->update_lock);
245 static ssize_t temp_input_show(struct device *dev,
246 struct device_attribute *devattr, char *buf)
248 int index = to_sensor_dev_attr(devattr)->index;
249 struct max6697_data *data = max6697_update_device(dev);
253 return PTR_ERR(data);
255 temp = (data->temp[index][MAX6697_TEMP_INPUT] - data->temp_offset) << 3;
256 temp |= data->temp[index][MAX6697_TEMP_EXT] >> 5;
258 return sprintf(buf, "%d\n", temp * 125);
261 static ssize_t temp_show(struct device *dev, struct device_attribute *devattr,
264 int nr = to_sensor_dev_attr_2(devattr)->nr;
265 int index = to_sensor_dev_attr_2(devattr)->index;
266 struct max6697_data *data = max6697_update_device(dev);
270 return PTR_ERR(data);
272 temp = data->temp[nr][index];
273 temp -= data->temp_offset;
275 return sprintf(buf, "%d\n", temp * 1000);
278 static ssize_t alarm_show(struct device *dev, struct device_attribute *attr,
281 int index = to_sensor_dev_attr(attr)->index;
282 struct max6697_data *data = max6697_update_device(dev);
285 return PTR_ERR(data);
287 if (data->chip->alarm_map)
288 index = data->chip->alarm_map[index];
290 return sprintf(buf, "%u\n", (data->alarms >> index) & 0x1);
293 static ssize_t temp_store(struct device *dev,
294 struct device_attribute *devattr, const char *buf,
297 int nr = to_sensor_dev_attr_2(devattr)->nr;
298 int index = to_sensor_dev_attr_2(devattr)->index;
299 struct max6697_data *data = dev_get_drvdata(dev);
303 ret = kstrtol(buf, 10, &temp);
307 mutex_lock(&data->update_lock);
308 temp = DIV_ROUND_CLOSEST(temp, 1000) + data->temp_offset;
309 temp = clamp_val(temp, 0, data->type == max6581 ? 255 : 127);
310 data->temp[nr][index] = temp;
311 ret = i2c_smbus_write_byte_data(data->client,
312 index == 2 ? MAX6697_REG_MAX[nr]
313 : MAX6697_REG_CRIT[nr],
315 mutex_unlock(&data->update_lock);
317 return ret < 0 ? ret : count;
320 static SENSOR_DEVICE_ATTR_RO(temp1_input, temp_input, 0);
321 static SENSOR_DEVICE_ATTR_2_RW(temp1_max, temp, 0, MAX6697_TEMP_MAX);
322 static SENSOR_DEVICE_ATTR_2_RW(temp1_crit, temp, 0, MAX6697_TEMP_CRIT);
324 static SENSOR_DEVICE_ATTR_RO(temp2_input, temp_input, 1);
325 static SENSOR_DEVICE_ATTR_2_RW(temp2_max, temp, 1, MAX6697_TEMP_MAX);
326 static SENSOR_DEVICE_ATTR_2_RW(temp2_crit, temp, 1, MAX6697_TEMP_CRIT);
328 static SENSOR_DEVICE_ATTR_RO(temp3_input, temp_input, 2);
329 static SENSOR_DEVICE_ATTR_2_RW(temp3_max, temp, 2, MAX6697_TEMP_MAX);
330 static SENSOR_DEVICE_ATTR_2_RW(temp3_crit, temp, 2, MAX6697_TEMP_CRIT);
332 static SENSOR_DEVICE_ATTR_RO(temp4_input, temp_input, 3);
333 static SENSOR_DEVICE_ATTR_2_RW(temp4_max, temp, 3, MAX6697_TEMP_MAX);
334 static SENSOR_DEVICE_ATTR_2_RW(temp4_crit, temp, 3, MAX6697_TEMP_CRIT);
336 static SENSOR_DEVICE_ATTR_RO(temp5_input, temp_input, 4);
337 static SENSOR_DEVICE_ATTR_2_RW(temp5_max, temp, 4, MAX6697_TEMP_MAX);
338 static SENSOR_DEVICE_ATTR_2_RW(temp5_crit, temp, 4, MAX6697_TEMP_CRIT);
340 static SENSOR_DEVICE_ATTR_RO(temp6_input, temp_input, 5);
341 static SENSOR_DEVICE_ATTR_2_RW(temp6_max, temp, 5, MAX6697_TEMP_MAX);
342 static SENSOR_DEVICE_ATTR_2_RW(temp6_crit, temp, 5, MAX6697_TEMP_CRIT);
344 static SENSOR_DEVICE_ATTR_RO(temp7_input, temp_input, 6);
345 static SENSOR_DEVICE_ATTR_2_RW(temp7_max, temp, 6, MAX6697_TEMP_MAX);
346 static SENSOR_DEVICE_ATTR_2_RW(temp7_crit, temp, 6, MAX6697_TEMP_CRIT);
348 static SENSOR_DEVICE_ATTR_RO(temp8_input, temp_input, 7);
349 static SENSOR_DEVICE_ATTR_2_RW(temp8_max, temp, 7, MAX6697_TEMP_MAX);
350 static SENSOR_DEVICE_ATTR_2_RW(temp8_crit, temp, 7, MAX6697_TEMP_CRIT);
352 static SENSOR_DEVICE_ATTR_RO(temp1_max_alarm, alarm, 22);
353 static SENSOR_DEVICE_ATTR_RO(temp2_max_alarm, alarm, 16);
354 static SENSOR_DEVICE_ATTR_RO(temp3_max_alarm, alarm, 17);
355 static SENSOR_DEVICE_ATTR_RO(temp4_max_alarm, alarm, 18);
356 static SENSOR_DEVICE_ATTR_RO(temp5_max_alarm, alarm, 19);
357 static SENSOR_DEVICE_ATTR_RO(temp6_max_alarm, alarm, 20);
358 static SENSOR_DEVICE_ATTR_RO(temp7_max_alarm, alarm, 21);
359 static SENSOR_DEVICE_ATTR_RO(temp8_max_alarm, alarm, 23);
361 static SENSOR_DEVICE_ATTR_RO(temp1_crit_alarm, alarm, 14);
362 static SENSOR_DEVICE_ATTR_RO(temp2_crit_alarm, alarm, 8);
363 static SENSOR_DEVICE_ATTR_RO(temp3_crit_alarm, alarm, 9);
364 static SENSOR_DEVICE_ATTR_RO(temp4_crit_alarm, alarm, 10);
365 static SENSOR_DEVICE_ATTR_RO(temp5_crit_alarm, alarm, 11);
366 static SENSOR_DEVICE_ATTR_RO(temp6_crit_alarm, alarm, 12);
367 static SENSOR_DEVICE_ATTR_RO(temp7_crit_alarm, alarm, 13);
368 static SENSOR_DEVICE_ATTR_RO(temp8_crit_alarm, alarm, 15);
370 static SENSOR_DEVICE_ATTR_RO(temp2_fault, alarm, 1);
371 static SENSOR_DEVICE_ATTR_RO(temp3_fault, alarm, 2);
372 static SENSOR_DEVICE_ATTR_RO(temp4_fault, alarm, 3);
373 static SENSOR_DEVICE_ATTR_RO(temp5_fault, alarm, 4);
374 static SENSOR_DEVICE_ATTR_RO(temp6_fault, alarm, 5);
375 static SENSOR_DEVICE_ATTR_RO(temp7_fault, alarm, 6);
376 static SENSOR_DEVICE_ATTR_RO(temp8_fault, alarm, 7);
378 static DEVICE_ATTR(dummy, 0, NULL, NULL);
380 static umode_t max6697_is_visible(struct kobject *kobj, struct attribute *attr,
383 struct device *dev = container_of(kobj, struct device, kobj);
384 struct max6697_data *data = dev_get_drvdata(dev);
385 const struct max6697_chip_data *chip = data->chip;
386 int channel = index / 6; /* channel number */
387 int nr = index % 6; /* attribute index within channel */
389 if (channel >= chip->channels)
392 if ((nr == 3 || nr == 4) && !(chip->have_crit & (1 << channel)))
394 if (nr == 5 && !(chip->have_fault & (1 << channel)))
401 * max6697_is_visible uses the index into the following array to determine
402 * if attributes should be created or not. Any change in order or content
403 * must be matched in max6697_is_visible.
405 static struct attribute *max6697_attributes[] = {
406 &sensor_dev_attr_temp1_input.dev_attr.attr,
407 &sensor_dev_attr_temp1_max.dev_attr.attr,
408 &sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
409 &sensor_dev_attr_temp1_crit.dev_attr.attr,
410 &sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,
411 &dev_attr_dummy.attr,
413 &sensor_dev_attr_temp2_input.dev_attr.attr,
414 &sensor_dev_attr_temp2_max.dev_attr.attr,
415 &sensor_dev_attr_temp2_max_alarm.dev_attr.attr,
416 &sensor_dev_attr_temp2_crit.dev_attr.attr,
417 &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr,
418 &sensor_dev_attr_temp2_fault.dev_attr.attr,
420 &sensor_dev_attr_temp3_input.dev_attr.attr,
421 &sensor_dev_attr_temp3_max.dev_attr.attr,
422 &sensor_dev_attr_temp3_max_alarm.dev_attr.attr,
423 &sensor_dev_attr_temp3_crit.dev_attr.attr,
424 &sensor_dev_attr_temp3_crit_alarm.dev_attr.attr,
425 &sensor_dev_attr_temp3_fault.dev_attr.attr,
427 &sensor_dev_attr_temp4_input.dev_attr.attr,
428 &sensor_dev_attr_temp4_max.dev_attr.attr,
429 &sensor_dev_attr_temp4_max_alarm.dev_attr.attr,
430 &sensor_dev_attr_temp4_crit.dev_attr.attr,
431 &sensor_dev_attr_temp4_crit_alarm.dev_attr.attr,
432 &sensor_dev_attr_temp4_fault.dev_attr.attr,
434 &sensor_dev_attr_temp5_input.dev_attr.attr,
435 &sensor_dev_attr_temp5_max.dev_attr.attr,
436 &sensor_dev_attr_temp5_max_alarm.dev_attr.attr,
437 &sensor_dev_attr_temp5_crit.dev_attr.attr,
438 &sensor_dev_attr_temp5_crit_alarm.dev_attr.attr,
439 &sensor_dev_attr_temp5_fault.dev_attr.attr,
441 &sensor_dev_attr_temp6_input.dev_attr.attr,
442 &sensor_dev_attr_temp6_max.dev_attr.attr,
443 &sensor_dev_attr_temp6_max_alarm.dev_attr.attr,
444 &sensor_dev_attr_temp6_crit.dev_attr.attr,
445 &sensor_dev_attr_temp6_crit_alarm.dev_attr.attr,
446 &sensor_dev_attr_temp6_fault.dev_attr.attr,
448 &sensor_dev_attr_temp7_input.dev_attr.attr,
449 &sensor_dev_attr_temp7_max.dev_attr.attr,
450 &sensor_dev_attr_temp7_max_alarm.dev_attr.attr,
451 &sensor_dev_attr_temp7_crit.dev_attr.attr,
452 &sensor_dev_attr_temp7_crit_alarm.dev_attr.attr,
453 &sensor_dev_attr_temp7_fault.dev_attr.attr,
455 &sensor_dev_attr_temp8_input.dev_attr.attr,
456 &sensor_dev_attr_temp8_max.dev_attr.attr,
457 &sensor_dev_attr_temp8_max_alarm.dev_attr.attr,
458 &sensor_dev_attr_temp8_crit.dev_attr.attr,
459 &sensor_dev_attr_temp8_crit_alarm.dev_attr.attr,
460 &sensor_dev_attr_temp8_fault.dev_attr.attr,
464 static const struct attribute_group max6697_group = {
465 .attrs = max6697_attributes, .is_visible = max6697_is_visible,
467 __ATTRIBUTE_GROUPS(max6697);
469 static void max6697_get_config_of(struct device_node *node,
470 struct max6697_platform_data *pdata)
475 pdata->smbus_timeout_disable =
476 of_property_read_bool(node, "smbus-timeout-disable");
477 pdata->extended_range_enable =
478 of_property_read_bool(node, "extended-range-enable");
479 pdata->beta_compensation =
480 of_property_read_bool(node, "beta-compensation-enable");
482 prop = of_get_property(node, "alert-mask", &len);
483 if (prop && len == sizeof(u32))
484 pdata->alert_mask = be32_to_cpu(prop[0]);
485 prop = of_get_property(node, "over-temperature-mask", &len);
486 if (prop && len == sizeof(u32))
487 pdata->over_temperature_mask = be32_to_cpu(prop[0]);
488 prop = of_get_property(node, "resistance-cancellation", &len);
490 if (len == sizeof(u32))
491 pdata->resistance_cancellation = be32_to_cpu(prop[0]);
493 pdata->resistance_cancellation = 0xfe;
495 prop = of_get_property(node, "transistor-ideality", &len);
496 if (prop && len == 2 * sizeof(u32)) {
497 pdata->ideality_mask = be32_to_cpu(prop[0]);
498 pdata->ideality_value = be32_to_cpu(prop[1]);
502 static int max6697_init_chip(struct max6697_data *data,
503 struct i2c_client *client)
505 struct max6697_platform_data *pdata = dev_get_platdata(&client->dev);
506 struct max6697_platform_data p;
507 const struct max6697_chip_data *chip = data->chip;
508 int factor = chip->channels;
512 * Don't touch configuration if neither platform data nor OF
513 * configuration was specified. If that is the case, use the
514 * current chip configuration.
516 if (!pdata && !client->dev.of_node) {
517 reg = i2c_smbus_read_byte_data(client, MAX6697_REG_CONFIG);
520 if (data->type == max6581) {
521 if (reg & MAX6581_CONF_EXTENDED)
522 data->temp_offset = 64;
523 reg = i2c_smbus_read_byte_data(client,
524 MAX6581_REG_RESISTANCE);
527 factor += hweight8(reg);
529 if (reg & MAX6697_CONF_RESISTANCE)
535 if (client->dev.of_node) {
536 memset(&p, 0, sizeof(p));
537 max6697_get_config_of(client->dev.of_node, &p);
542 if (pdata->smbus_timeout_disable &&
543 (chip->valid_conf & MAX6697_CONF_TIMEOUT)) {
544 reg |= MAX6697_CONF_TIMEOUT;
546 if (pdata->extended_range_enable &&
547 (chip->valid_conf & MAX6581_CONF_EXTENDED)) {
548 reg |= MAX6581_CONF_EXTENDED;
549 data->temp_offset = 64;
551 if (pdata->resistance_cancellation &&
552 (chip->valid_conf & MAX6697_CONF_RESISTANCE)) {
553 reg |= MAX6697_CONF_RESISTANCE;
556 if (pdata->beta_compensation &&
557 (chip->valid_conf & MAX6693_CONF_BETA)) {
558 reg |= MAX6693_CONF_BETA;
561 ret = i2c_smbus_write_byte_data(client, MAX6697_REG_CONFIG, reg);
565 ret = i2c_smbus_write_byte_data(client, MAX6697_REG_ALERT_MASK,
566 MAX6697_ALERT_MAP_BITS(pdata->alert_mask));
570 ret = i2c_smbus_write_byte_data(client, MAX6697_REG_OVERT_MASK,
571 MAX6697_OVERT_MAP_BITS(pdata->over_temperature_mask));
575 if (data->type == max6581) {
576 factor += hweight8(pdata->resistance_cancellation >> 1);
577 ret = i2c_smbus_write_byte_data(client, MAX6581_REG_RESISTANCE,
578 pdata->resistance_cancellation >> 1);
581 ret = i2c_smbus_write_byte_data(client, MAX6581_REG_IDEALITY,
582 pdata->ideality_value);
585 ret = i2c_smbus_write_byte_data(client,
586 MAX6581_REG_IDEALITY_SELECT,
587 pdata->ideality_mask >> 1);
592 data->update_interval = factor * MAX6697_CONV_TIME;
596 static int max6697_probe(struct i2c_client *client,
597 const struct i2c_device_id *id)
599 struct i2c_adapter *adapter = client->adapter;
600 struct device *dev = &client->dev;
601 struct max6697_data *data;
602 struct device *hwmon_dev;
605 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
608 data = devm_kzalloc(dev, sizeof(struct max6697_data), GFP_KERNEL);
612 if (client->dev.of_node)
613 data->type = (enum chips)of_device_get_match_data(&client->dev);
615 data->type = id->driver_data;
616 data->chip = &max6697_chip_data[data->type];
617 data->client = client;
618 mutex_init(&data->update_lock);
620 err = max6697_init_chip(data, client);
624 hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
627 return PTR_ERR_OR_ZERO(hwmon_dev);
630 static const struct i2c_device_id max6697_id[] = {
631 { "max6581", max6581 },
632 { "max6602", max6602 },
633 { "max6622", max6622 },
634 { "max6636", max6636 },
635 { "max6689", max6689 },
636 { "max6693", max6693 },
637 { "max6694", max6694 },
638 { "max6697", max6697 },
639 { "max6698", max6698 },
640 { "max6699", max6699 },
643 MODULE_DEVICE_TABLE(i2c, max6697_id);
645 static const struct of_device_id __maybe_unused max6697_of_match[] = {
647 .compatible = "maxim,max6581",
648 .data = (void *)max6581
651 .compatible = "maxim,max6602",
652 .data = (void *)max6602
655 .compatible = "maxim,max6622",
656 .data = (void *)max6622
659 .compatible = "maxim,max6636",
660 .data = (void *)max6636
663 .compatible = "maxim,max6689",
664 .data = (void *)max6689
667 .compatible = "maxim,max6693",
668 .data = (void *)max6693
671 .compatible = "maxim,max6694",
672 .data = (void *)max6694
675 .compatible = "maxim,max6697",
676 .data = (void *)max6697
679 .compatible = "maxim,max6698",
680 .data = (void *)max6698
683 .compatible = "maxim,max6699",
684 .data = (void *)max6699
688 MODULE_DEVICE_TABLE(of, max6697_of_match);
690 static struct i2c_driver max6697_driver = {
691 .class = I2C_CLASS_HWMON,
694 .of_match_table = of_match_ptr(max6697_of_match),
696 .probe = max6697_probe,
697 .id_table = max6697_id,
700 module_i2c_driver(max6697_driver);
702 MODULE_AUTHOR("Guenter Roeck <linux@roeck-us.net>");
703 MODULE_DESCRIPTION("MAX6697 temperature sensor driver");
704 MODULE_LICENSE("GPL");