2 * lm80.c - From lm_sensors, Linux kernel modules for hardware
4 * Copyright (C) 1998, 1999 Frodo Looijaard <frodol@dds.nl>
5 * and Philip Edelbrock <phil@netroedge.com>
7 * Ported to Linux 2.6 by Tiago Sousa <mirage@kaotik.org>
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.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 #include <linux/module.h>
25 #include <linux/init.h>
26 #include <linux/slab.h>
27 #include <linux/jiffies.h>
28 #include <linux/i2c.h>
29 #include <linux/hwmon.h>
30 #include <linux/hwmon-sysfs.h>
31 #include <linux/err.h>
32 #include <linux/mutex.h>
34 /* Addresses to scan */
35 static const unsigned short normal_i2c[] = { 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d,
36 0x2e, 0x2f, I2C_CLIENT_END };
38 /* Many LM80 constants specified below */
40 /* The LM80 registers */
41 #define LM80_REG_IN_MAX(nr) (0x2a + (nr) * 2)
42 #define LM80_REG_IN_MIN(nr) (0x2b + (nr) * 2)
43 #define LM80_REG_IN(nr) (0x20 + (nr))
45 #define LM80_REG_FAN1 0x28
46 #define LM80_REG_FAN2 0x29
47 #define LM80_REG_FAN_MIN(nr) (0x3b + (nr))
49 #define LM80_REG_TEMP 0x27
50 #define LM80_REG_TEMP_HOT_MAX 0x38
51 #define LM80_REG_TEMP_HOT_HYST 0x39
52 #define LM80_REG_TEMP_OS_MAX 0x3a
53 #define LM80_REG_TEMP_OS_HYST 0x3b
55 #define LM80_REG_CONFIG 0x00
56 #define LM80_REG_ALARM1 0x01
57 #define LM80_REG_ALARM2 0x02
58 #define LM80_REG_MASK1 0x03
59 #define LM80_REG_MASK2 0x04
60 #define LM80_REG_FANDIV 0x05
61 #define LM80_REG_RES 0x06
64 /* Conversions. Rounding and limit checking is only done on the TO_REG
65 variants. Note that you should be a bit careful with which arguments
66 these macros are called: arguments may be evaluated more than once.
67 Fixing this is just not worth it. */
69 #define IN_TO_REG(val) (SENSORS_LIMIT(((val) + 5) / 10, 0, 255))
70 #define IN_FROM_REG(val) ((val) * 10)
72 static inline unsigned char FAN_TO_REG(unsigned rpm, unsigned div)
76 rpm = SENSORS_LIMIT(rpm, 1, 1000000);
77 return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
80 #define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : \
81 (val) == 255 ? 0 : 1350000/((div) * (val)))
83 static inline long TEMP_FROM_REG(u16 temp)
89 res = 625 * (long) temp;
91 res = ((long) temp - 0x01000) * 625;
96 #define TEMP_LIMIT_FROM_REG(val) (((val) > 0x80 ? \
97 (val) - 0x100 : (val)) * 1000)
99 #define TEMP_LIMIT_TO_REG(val) SENSORS_LIMIT((val) < 0 ? \
100 ((val) - 500) / 1000 : ((val) + 500) / 1000, 0, 255)
102 #define DIV_FROM_REG(val) (1 << (val))
105 * Client data (each client gets its own)
109 struct device *hwmon_dev;
110 struct mutex update_lock;
111 char error; /* !=0 if error occurred during last update */
112 char valid; /* !=0 if following fields are valid */
113 unsigned long last_updated; /* In jiffies */
115 u8 in[7]; /* Register value */
116 u8 in_max[7]; /* Register value */
117 u8 in_min[7]; /* Register value */
118 u8 fan[2]; /* Register value */
119 u8 fan_min[2]; /* Register value */
120 u8 fan_div[2]; /* Register encoding, shifted right */
121 u16 temp; /* Register values, shifted right */
122 u8 temp_hot_max; /* Register value */
123 u8 temp_hot_hyst; /* Register value */
124 u8 temp_os_max; /* Register value */
125 u8 temp_os_hyst; /* Register value */
126 u16 alarms; /* Register encoding, combined */
130 * Functions declaration
133 static int lm80_probe(struct i2c_client *client,
134 const struct i2c_device_id *id);
135 static int lm80_detect(struct i2c_client *client, struct i2c_board_info *info);
136 static void lm80_init_client(struct i2c_client *client);
137 static int lm80_remove(struct i2c_client *client);
138 static struct lm80_data *lm80_update_device(struct device *dev);
139 static int lm80_read_value(struct i2c_client *client, u8 reg);
140 static int lm80_write_value(struct i2c_client *client, u8 reg, u8 value);
143 * Driver data (common to all clients)
146 static const struct i2c_device_id lm80_id[] = {
150 MODULE_DEVICE_TABLE(i2c, lm80_id);
152 static struct i2c_driver lm80_driver = {
153 .class = I2C_CLASS_HWMON,
158 .remove = lm80_remove,
160 .detect = lm80_detect,
161 .address_list = normal_i2c,
168 #define show_in(suffix, value) \
169 static ssize_t show_in_##suffix(struct device *dev, \
170 struct device_attribute *attr, char *buf) \
172 int nr = to_sensor_dev_attr(attr)->index; \
173 struct lm80_data *data = lm80_update_device(dev); \
175 return PTR_ERR(data); \
176 return sprintf(buf, "%d\n", IN_FROM_REG(data->value[nr])); \
182 #define set_in(suffix, value, reg) \
183 static ssize_t set_in_##suffix(struct device *dev, \
184 struct device_attribute *attr, const char *buf, size_t count) \
186 int nr = to_sensor_dev_attr(attr)->index; \
187 struct i2c_client *client = to_i2c_client(dev); \
188 struct lm80_data *data = i2c_get_clientdata(client); \
190 int err = kstrtol(buf, 10, &val); \
194 mutex_lock(&data->update_lock);\
195 data->value[nr] = IN_TO_REG(val); \
196 lm80_write_value(client, reg(nr), data->value[nr]); \
197 mutex_unlock(&data->update_lock);\
200 set_in(min, in_min, LM80_REG_IN_MIN)
201 set_in(max, in_max, LM80_REG_IN_MAX)
203 #define show_fan(suffix, value) \
204 static ssize_t show_fan_##suffix(struct device *dev, \
205 struct device_attribute *attr, char *buf) \
207 int nr = to_sensor_dev_attr(attr)->index; \
208 struct lm80_data *data = lm80_update_device(dev); \
210 return PTR_ERR(data); \
211 return sprintf(buf, "%d\n", FAN_FROM_REG(data->value[nr], \
212 DIV_FROM_REG(data->fan_div[nr]))); \
214 show_fan(min, fan_min)
217 static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
220 int nr = to_sensor_dev_attr(attr)->index;
221 struct lm80_data *data = lm80_update_device(dev);
223 return PTR_ERR(data);
224 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
227 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
228 const char *buf, size_t count)
230 int nr = to_sensor_dev_attr(attr)->index;
231 struct i2c_client *client = to_i2c_client(dev);
232 struct lm80_data *data = i2c_get_clientdata(client);
234 int err = kstrtoul(buf, 10, &val);
238 mutex_lock(&data->update_lock);
239 data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
240 lm80_write_value(client, LM80_REG_FAN_MIN(nr + 1), data->fan_min[nr]);
241 mutex_unlock(&data->update_lock);
245 /* Note: we save and restore the fan minimum here, because its value is
246 determined in part by the fan divisor. This follows the principle of
247 least surprise; the user doesn't expect the fan minimum to change just
248 because the divisor changed. */
249 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
250 const char *buf, size_t count)
252 int nr = to_sensor_dev_attr(attr)->index;
253 struct i2c_client *client = to_i2c_client(dev);
254 struct lm80_data *data = i2c_get_clientdata(client);
255 unsigned long min, val;
257 int err = kstrtoul(buf, 10, &val);
262 mutex_lock(&data->update_lock);
263 min = FAN_FROM_REG(data->fan_min[nr],
264 DIV_FROM_REG(data->fan_div[nr]));
268 data->fan_div[nr] = 0;
271 data->fan_div[nr] = 1;
274 data->fan_div[nr] = 2;
277 data->fan_div[nr] = 3;
280 dev_err(&client->dev, "fan_div value %ld not "
281 "supported. Choose one of 1, 2, 4 or 8!\n", val);
282 mutex_unlock(&data->update_lock);
286 reg = (lm80_read_value(client, LM80_REG_FANDIV) & ~(3 << (2 * (nr + 1))))
287 | (data->fan_div[nr] << (2 * (nr + 1)));
288 lm80_write_value(client, LM80_REG_FANDIV, reg);
290 /* Restore fan_min */
291 data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
292 lm80_write_value(client, LM80_REG_FAN_MIN(nr + 1), data->fan_min[nr]);
293 mutex_unlock(&data->update_lock);
298 static ssize_t show_temp_input1(struct device *dev,
299 struct device_attribute *attr, char *buf)
301 struct lm80_data *data = lm80_update_device(dev);
303 return PTR_ERR(data);
304 return sprintf(buf, "%ld\n", TEMP_FROM_REG(data->temp));
307 #define show_temp(suffix, value) \
308 static ssize_t show_temp_##suffix(struct device *dev, \
309 struct device_attribute *attr, char *buf) \
311 struct lm80_data *data = lm80_update_device(dev); \
313 return PTR_ERR(data); \
314 return sprintf(buf, "%d\n", TEMP_LIMIT_FROM_REG(data->value)); \
316 show_temp(hot_max, temp_hot_max);
317 show_temp(hot_hyst, temp_hot_hyst);
318 show_temp(os_max, temp_os_max);
319 show_temp(os_hyst, temp_os_hyst);
321 #define set_temp(suffix, value, reg) \
322 static ssize_t set_temp_##suffix(struct device *dev, \
323 struct device_attribute *attr, const char *buf, size_t count) \
325 struct i2c_client *client = to_i2c_client(dev); \
326 struct lm80_data *data = i2c_get_clientdata(client); \
328 int err = kstrtol(buf, 10, &val); \
332 mutex_lock(&data->update_lock); \
333 data->value = TEMP_LIMIT_TO_REG(val); \
334 lm80_write_value(client, reg, data->value); \
335 mutex_unlock(&data->update_lock); \
338 set_temp(hot_max, temp_hot_max, LM80_REG_TEMP_HOT_MAX);
339 set_temp(hot_hyst, temp_hot_hyst, LM80_REG_TEMP_HOT_HYST);
340 set_temp(os_max, temp_os_max, LM80_REG_TEMP_OS_MAX);
341 set_temp(os_hyst, temp_os_hyst, LM80_REG_TEMP_OS_HYST);
343 static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
346 struct lm80_data *data = lm80_update_device(dev);
348 return PTR_ERR(data);
349 return sprintf(buf, "%u\n", data->alarms);
352 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
355 int bitnr = to_sensor_dev_attr(attr)->index;
356 struct lm80_data *data = lm80_update_device(dev);
358 return PTR_ERR(data);
359 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
362 static SENSOR_DEVICE_ATTR(in0_min, S_IWUSR | S_IRUGO,
363 show_in_min, set_in_min, 0);
364 static SENSOR_DEVICE_ATTR(in1_min, S_IWUSR | S_IRUGO,
365 show_in_min, set_in_min, 1);
366 static SENSOR_DEVICE_ATTR(in2_min, S_IWUSR | S_IRUGO,
367 show_in_min, set_in_min, 2);
368 static SENSOR_DEVICE_ATTR(in3_min, S_IWUSR | S_IRUGO,
369 show_in_min, set_in_min, 3);
370 static SENSOR_DEVICE_ATTR(in4_min, S_IWUSR | S_IRUGO,
371 show_in_min, set_in_min, 4);
372 static SENSOR_DEVICE_ATTR(in5_min, S_IWUSR | S_IRUGO,
373 show_in_min, set_in_min, 5);
374 static SENSOR_DEVICE_ATTR(in6_min, S_IWUSR | S_IRUGO,
375 show_in_min, set_in_min, 6);
376 static SENSOR_DEVICE_ATTR(in0_max, S_IWUSR | S_IRUGO,
377 show_in_max, set_in_max, 0);
378 static SENSOR_DEVICE_ATTR(in1_max, S_IWUSR | S_IRUGO,
379 show_in_max, set_in_max, 1);
380 static SENSOR_DEVICE_ATTR(in2_max, S_IWUSR | S_IRUGO,
381 show_in_max, set_in_max, 2);
382 static SENSOR_DEVICE_ATTR(in3_max, S_IWUSR | S_IRUGO,
383 show_in_max, set_in_max, 3);
384 static SENSOR_DEVICE_ATTR(in4_max, S_IWUSR | S_IRUGO,
385 show_in_max, set_in_max, 4);
386 static SENSOR_DEVICE_ATTR(in5_max, S_IWUSR | S_IRUGO,
387 show_in_max, set_in_max, 5);
388 static SENSOR_DEVICE_ATTR(in6_max, S_IWUSR | S_IRUGO,
389 show_in_max, set_in_max, 6);
390 static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in_input, NULL, 0);
391 static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in_input, NULL, 1);
392 static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in_input, NULL, 2);
393 static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in_input, NULL, 3);
394 static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_in_input, NULL, 4);
395 static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, show_in_input, NULL, 5);
396 static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, show_in_input, NULL, 6);
397 static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO,
398 show_fan_min, set_fan_min, 0);
399 static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO,
400 show_fan_min, set_fan_min, 1);
401 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan_input, NULL, 0);
402 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan_input, NULL, 1);
403 static SENSOR_DEVICE_ATTR(fan1_div, S_IWUSR | S_IRUGO,
404 show_fan_div, set_fan_div, 0);
405 static SENSOR_DEVICE_ATTR(fan2_div, S_IWUSR | S_IRUGO,
406 show_fan_div, set_fan_div, 1);
407 static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input1, NULL);
408 static DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_hot_max,
410 static DEVICE_ATTR(temp1_max_hyst, S_IWUSR | S_IRUGO, show_temp_hot_hyst,
412 static DEVICE_ATTR(temp1_crit, S_IWUSR | S_IRUGO, show_temp_os_max,
414 static DEVICE_ATTR(temp1_crit_hyst, S_IWUSR | S_IRUGO, show_temp_os_hyst,
416 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
417 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
418 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
419 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
420 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
421 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 4);
422 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 5);
423 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 6);
424 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 10);
425 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 11);
426 static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_alarm, NULL, 8);
427 static SENSOR_DEVICE_ATTR(temp1_crit_alarm, S_IRUGO, show_alarm, NULL, 13);
433 static struct attribute *lm80_attributes[] = {
434 &sensor_dev_attr_in0_min.dev_attr.attr,
435 &sensor_dev_attr_in1_min.dev_attr.attr,
436 &sensor_dev_attr_in2_min.dev_attr.attr,
437 &sensor_dev_attr_in3_min.dev_attr.attr,
438 &sensor_dev_attr_in4_min.dev_attr.attr,
439 &sensor_dev_attr_in5_min.dev_attr.attr,
440 &sensor_dev_attr_in6_min.dev_attr.attr,
441 &sensor_dev_attr_in0_max.dev_attr.attr,
442 &sensor_dev_attr_in1_max.dev_attr.attr,
443 &sensor_dev_attr_in2_max.dev_attr.attr,
444 &sensor_dev_attr_in3_max.dev_attr.attr,
445 &sensor_dev_attr_in4_max.dev_attr.attr,
446 &sensor_dev_attr_in5_max.dev_attr.attr,
447 &sensor_dev_attr_in6_max.dev_attr.attr,
448 &sensor_dev_attr_in0_input.dev_attr.attr,
449 &sensor_dev_attr_in1_input.dev_attr.attr,
450 &sensor_dev_attr_in2_input.dev_attr.attr,
451 &sensor_dev_attr_in3_input.dev_attr.attr,
452 &sensor_dev_attr_in4_input.dev_attr.attr,
453 &sensor_dev_attr_in5_input.dev_attr.attr,
454 &sensor_dev_attr_in6_input.dev_attr.attr,
455 &sensor_dev_attr_fan1_min.dev_attr.attr,
456 &sensor_dev_attr_fan2_min.dev_attr.attr,
457 &sensor_dev_attr_fan1_input.dev_attr.attr,
458 &sensor_dev_attr_fan2_input.dev_attr.attr,
459 &sensor_dev_attr_fan1_div.dev_attr.attr,
460 &sensor_dev_attr_fan2_div.dev_attr.attr,
461 &dev_attr_temp1_input.attr,
462 &dev_attr_temp1_max.attr,
463 &dev_attr_temp1_max_hyst.attr,
464 &dev_attr_temp1_crit.attr,
465 &dev_attr_temp1_crit_hyst.attr,
466 &dev_attr_alarms.attr,
467 &sensor_dev_attr_in0_alarm.dev_attr.attr,
468 &sensor_dev_attr_in1_alarm.dev_attr.attr,
469 &sensor_dev_attr_in2_alarm.dev_attr.attr,
470 &sensor_dev_attr_in3_alarm.dev_attr.attr,
471 &sensor_dev_attr_in4_alarm.dev_attr.attr,
472 &sensor_dev_attr_in5_alarm.dev_attr.attr,
473 &sensor_dev_attr_in6_alarm.dev_attr.attr,
474 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
475 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
476 &sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
477 &sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,
481 static const struct attribute_group lm80_group = {
482 .attrs = lm80_attributes,
485 /* Return 0 if detection is successful, -ENODEV otherwise */
486 static int lm80_detect(struct i2c_client *client, struct i2c_board_info *info)
488 struct i2c_adapter *adapter = client->adapter;
491 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
494 /* Now, we do the remaining detection. It is lousy. */
495 if (lm80_read_value(client, LM80_REG_ALARM2) & 0xc0)
497 for (i = 0x2a; i <= 0x3d; i++) {
498 cur = i2c_smbus_read_byte_data(client, i);
499 if ((i2c_smbus_read_byte_data(client, i + 0x40) != cur)
500 || (i2c_smbus_read_byte_data(client, i + 0x80) != cur)
501 || (i2c_smbus_read_byte_data(client, i + 0xc0) != cur))
505 strlcpy(info->type, "lm80", I2C_NAME_SIZE);
510 static int lm80_probe(struct i2c_client *client,
511 const struct i2c_device_id *id)
513 struct lm80_data *data;
516 data = kzalloc(sizeof(struct lm80_data), GFP_KERNEL);
522 i2c_set_clientdata(client, data);
523 mutex_init(&data->update_lock);
525 /* Initialize the LM80 chip */
526 lm80_init_client(client);
528 /* A few vars need to be filled upon startup */
529 data->fan_min[0] = lm80_read_value(client, LM80_REG_FAN_MIN(1));
530 data->fan_min[1] = lm80_read_value(client, LM80_REG_FAN_MIN(2));
532 /* Register sysfs hooks */
533 err = sysfs_create_group(&client->dev.kobj, &lm80_group);
537 data->hwmon_dev = hwmon_device_register(&client->dev);
538 if (IS_ERR(data->hwmon_dev)) {
539 err = PTR_ERR(data->hwmon_dev);
546 sysfs_remove_group(&client->dev.kobj, &lm80_group);
553 static int lm80_remove(struct i2c_client *client)
555 struct lm80_data *data = i2c_get_clientdata(client);
557 hwmon_device_unregister(data->hwmon_dev);
558 sysfs_remove_group(&client->dev.kobj, &lm80_group);
564 static int lm80_read_value(struct i2c_client *client, u8 reg)
566 return i2c_smbus_read_byte_data(client, reg);
569 static int lm80_write_value(struct i2c_client *client, u8 reg, u8 value)
571 return i2c_smbus_write_byte_data(client, reg, value);
574 /* Called when we have found a new LM80. */
575 static void lm80_init_client(struct i2c_client *client)
577 /* Reset all except Watchdog values and last conversion values
578 This sets fan-divs to 2, among others. This makes most other
579 initializations unnecessary */
580 lm80_write_value(client, LM80_REG_CONFIG, 0x80);
581 /* Set 11-bit temperature resolution */
582 lm80_write_value(client, LM80_REG_RES, 0x08);
584 /* Start monitoring */
585 lm80_write_value(client, LM80_REG_CONFIG, 0x01);
588 static struct lm80_data *lm80_update_device(struct device *dev)
590 struct i2c_client *client = to_i2c_client(dev);
591 struct lm80_data *data = i2c_get_clientdata(client);
595 struct lm80_data *ret = data;
597 mutex_lock(&data->update_lock);
600 lm80_init_client(client);
602 if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
603 dev_dbg(&client->dev, "Starting lm80 update\n");
604 for (i = 0; i <= 6; i++) {
605 rv = lm80_read_value(client, LM80_REG_IN(i));
610 rv = lm80_read_value(client, LM80_REG_IN_MIN(i));
613 data->in_min[i] = rv;
615 rv = lm80_read_value(client, LM80_REG_IN_MAX(i));
618 data->in_max[i] = rv;
621 rv = lm80_read_value(client, LM80_REG_FAN1);
626 rv = lm80_read_value(client, LM80_REG_FAN_MIN(1));
629 data->fan_min[0] = rv;
631 rv = lm80_read_value(client, LM80_REG_FAN2);
636 rv = lm80_read_value(client, LM80_REG_FAN_MIN(2));
639 data->fan_min[1] = rv;
641 prev_rv = rv = lm80_read_value(client, LM80_REG_TEMP);
644 rv = lm80_read_value(client, LM80_REG_RES);
647 data->temp = (prev_rv << 8) | (rv & 0xf0);
649 rv = lm80_read_value(client, LM80_REG_TEMP_OS_MAX);
652 data->temp_os_max = rv;
654 rv = lm80_read_value(client, LM80_REG_TEMP_OS_HYST);
657 data->temp_os_hyst = rv;
659 rv = lm80_read_value(client, LM80_REG_TEMP_HOT_MAX);
662 data->temp_hot_max = rv;
664 rv = lm80_read_value(client, LM80_REG_TEMP_HOT_HYST);
667 data->temp_hot_hyst = rv;
669 rv = lm80_read_value(client, LM80_REG_FANDIV);
672 data->fan_div[0] = (rv >> 2) & 0x03;
673 data->fan_div[1] = (rv >> 4) & 0x03;
675 prev_rv = rv = lm80_read_value(client, LM80_REG_ALARM1);
678 rv = lm80_read_value(client, LM80_REG_ALARM2);
681 data->alarms = prev_rv + (rv << 8);
683 data->last_updated = jiffies;
695 mutex_unlock(&data->update_lock);
700 module_i2c_driver(lm80_driver);
702 MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl> and "
703 "Philip Edelbrock <phil@netroedge.com>");
704 MODULE_DESCRIPTION("LM80 driver");
705 MODULE_LICENSE("GPL");