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 unsigned short normal_i2c[] = { 0x28, 0x29, 0x2a, 0x2b, 0x2c,
36 0x2d, 0x2e, 0x2f, I2C_CLIENT_END };
38 /* Insmod parameters */
39 I2C_CLIENT_INSMOD_1(lm80);
41 /* Many LM80 constants specified below */
43 /* The LM80 registers */
44 #define LM80_REG_IN_MAX(nr) (0x2a + (nr) * 2)
45 #define LM80_REG_IN_MIN(nr) (0x2b + (nr) * 2)
46 #define LM80_REG_IN(nr) (0x20 + (nr))
48 #define LM80_REG_FAN1 0x28
49 #define LM80_REG_FAN2 0x29
50 #define LM80_REG_FAN_MIN(nr) (0x3b + (nr))
52 #define LM80_REG_TEMP 0x27
53 #define LM80_REG_TEMP_HOT_MAX 0x38
54 #define LM80_REG_TEMP_HOT_HYST 0x39
55 #define LM80_REG_TEMP_OS_MAX 0x3a
56 #define LM80_REG_TEMP_OS_HYST 0x3b
58 #define LM80_REG_CONFIG 0x00
59 #define LM80_REG_ALARM1 0x01
60 #define LM80_REG_ALARM2 0x02
61 #define LM80_REG_MASK1 0x03
62 #define LM80_REG_MASK2 0x04
63 #define LM80_REG_FANDIV 0x05
64 #define LM80_REG_RES 0x06
67 /* Conversions. Rounding and limit checking is only done on the TO_REG
68 variants. Note that you should be a bit careful with which arguments
69 these macros are called: arguments may be evaluated more than once.
70 Fixing this is just not worth it. */
72 #define IN_TO_REG(val) (SENSORS_LIMIT(((val)+5)/10,0,255))
73 #define IN_FROM_REG(val) ((val)*10)
75 static inline unsigned char FAN_TO_REG(unsigned rpm, unsigned div)
79 rpm = SENSORS_LIMIT(rpm, 1, 1000000);
80 return SENSORS_LIMIT((1350000 + rpm*div / 2) / (rpm*div), 1, 254);
83 #define FAN_FROM_REG(val,div) ((val)==0?-1:\
84 (val)==255?0:1350000/((div)*(val)))
86 static inline long TEMP_FROM_REG(u16 temp)
92 res = 625 * (long) temp;
94 res = ((long) temp - 0x01000) * 625;
99 #define TEMP_LIMIT_FROM_REG(val) (((val)>0x80?(val)-0x100:(val))*1000)
101 #define TEMP_LIMIT_TO_REG(val) SENSORS_LIMIT((val)<0?\
102 ((val)-500)/1000:((val)+500)/1000,0,255)
104 #define DIV_FROM_REG(val) (1 << (val))
107 * Client data (each client gets its own)
111 struct i2c_client client;
112 struct device *hwmon_dev;
113 struct mutex update_lock;
114 char valid; /* !=0 if following fields are valid */
115 unsigned long last_updated; /* In jiffies */
117 u8 in[7]; /* Register value */
118 u8 in_max[7]; /* Register value */
119 u8 in_min[7]; /* Register value */
120 u8 fan[2]; /* Register value */
121 u8 fan_min[2]; /* Register value */
122 u8 fan_div[2]; /* Register encoding, shifted right */
123 u16 temp; /* Register values, shifted right */
124 u8 temp_hot_max; /* Register value */
125 u8 temp_hot_hyst; /* Register value */
126 u8 temp_os_max; /* Register value */
127 u8 temp_os_hyst; /* Register value */
128 u16 alarms; /* Register encoding, combined */
132 * Functions declaration
135 static int lm80_attach_adapter(struct i2c_adapter *adapter);
136 static int lm80_detect(struct i2c_adapter *adapter, int address, int kind);
137 static void lm80_init_client(struct i2c_client *client);
138 static int lm80_detach_client(struct i2c_client *client);
139 static struct lm80_data *lm80_update_device(struct device *dev);
140 static int lm80_read_value(struct i2c_client *client, u8 reg);
141 static int lm80_write_value(struct i2c_client *client, u8 reg, u8 value);
144 * Driver data (common to all clients)
147 static struct i2c_driver lm80_driver = {
151 .attach_adapter = lm80_attach_adapter,
152 .detach_client = lm80_detach_client,
159 #define show_in(suffix, value) \
160 static ssize_t show_in_##suffix(struct device *dev, struct device_attribute *attr, char *buf) \
162 int nr = to_sensor_dev_attr(attr)->index; \
163 struct lm80_data *data = lm80_update_device(dev); \
164 return sprintf(buf, "%d\n", IN_FROM_REG(data->value[nr])); \
170 #define set_in(suffix, value, reg) \
171 static ssize_t set_in_##suffix(struct device *dev, struct device_attribute *attr, const char *buf, \
174 int nr = to_sensor_dev_attr(attr)->index; \
175 struct i2c_client *client = to_i2c_client(dev); \
176 struct lm80_data *data = i2c_get_clientdata(client); \
177 long val = simple_strtol(buf, NULL, 10); \
179 mutex_lock(&data->update_lock);\
180 data->value[nr] = IN_TO_REG(val); \
181 lm80_write_value(client, reg(nr), data->value[nr]); \
182 mutex_unlock(&data->update_lock);\
185 set_in(min, in_min, LM80_REG_IN_MIN)
186 set_in(max, in_max, LM80_REG_IN_MAX)
188 #define show_fan(suffix, value) \
189 static ssize_t show_fan_##suffix(struct device *dev, struct device_attribute *attr, char *buf) \
191 int nr = to_sensor_dev_attr(attr)->index; \
192 struct lm80_data *data = lm80_update_device(dev); \
193 return sprintf(buf, "%d\n", FAN_FROM_REG(data->value[nr], \
194 DIV_FROM_REG(data->fan_div[nr]))); \
196 show_fan(min, fan_min)
199 static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
202 int nr = to_sensor_dev_attr(attr)->index;
203 struct lm80_data *data = lm80_update_device(dev);
204 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
207 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
208 const char *buf, size_t count)
210 int nr = to_sensor_dev_attr(attr)->index;
211 struct i2c_client *client = to_i2c_client(dev);
212 struct lm80_data *data = i2c_get_clientdata(client);
213 long val = simple_strtoul(buf, NULL, 10);
215 mutex_lock(&data->update_lock);
216 data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
217 lm80_write_value(client, LM80_REG_FAN_MIN(nr + 1), data->fan_min[nr]);
218 mutex_unlock(&data->update_lock);
222 /* Note: we save and restore the fan minimum here, because its value is
223 determined in part by the fan divisor. This follows the principle of
224 least surprise; the user doesn't expect the fan minimum to change just
225 because the divisor changed. */
226 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
227 const char *buf, size_t count)
229 int nr = to_sensor_dev_attr(attr)->index;
230 struct i2c_client *client = to_i2c_client(dev);
231 struct lm80_data *data = i2c_get_clientdata(client);
232 unsigned long min, val = simple_strtoul(buf, NULL, 10);
236 mutex_lock(&data->update_lock);
237 min = FAN_FROM_REG(data->fan_min[nr],
238 DIV_FROM_REG(data->fan_div[nr]));
241 case 1: data->fan_div[nr] = 0; break;
242 case 2: data->fan_div[nr] = 1; break;
243 case 4: data->fan_div[nr] = 2; break;
244 case 8: data->fan_div[nr] = 3; break;
246 dev_err(&client->dev, "fan_div value %ld not "
247 "supported. Choose one of 1, 2, 4 or 8!\n", val);
248 mutex_unlock(&data->update_lock);
252 reg = (lm80_read_value(client, LM80_REG_FANDIV) & ~(3 << (2 * (nr + 1))))
253 | (data->fan_div[nr] << (2 * (nr + 1)));
254 lm80_write_value(client, LM80_REG_FANDIV, reg);
256 /* Restore fan_min */
257 data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
258 lm80_write_value(client, LM80_REG_FAN_MIN(nr + 1), data->fan_min[nr]);
259 mutex_unlock(&data->update_lock);
264 static ssize_t show_temp_input1(struct device *dev, struct device_attribute *attr, char *buf)
266 struct lm80_data *data = lm80_update_device(dev);
267 return sprintf(buf, "%ld\n", TEMP_FROM_REG(data->temp));
270 #define show_temp(suffix, value) \
271 static ssize_t show_temp_##suffix(struct device *dev, struct device_attribute *attr, char *buf) \
273 struct lm80_data *data = lm80_update_device(dev); \
274 return sprintf(buf, "%d\n", TEMP_LIMIT_FROM_REG(data->value)); \
276 show_temp(hot_max, temp_hot_max);
277 show_temp(hot_hyst, temp_hot_hyst);
278 show_temp(os_max, temp_os_max);
279 show_temp(os_hyst, temp_os_hyst);
281 #define set_temp(suffix, value, reg) \
282 static ssize_t set_temp_##suffix(struct device *dev, struct device_attribute *attr, const char *buf, \
285 struct i2c_client *client = to_i2c_client(dev); \
286 struct lm80_data *data = i2c_get_clientdata(client); \
287 long val = simple_strtoul(buf, NULL, 10); \
289 mutex_lock(&data->update_lock); \
290 data->value = TEMP_LIMIT_TO_REG(val); \
291 lm80_write_value(client, reg, data->value); \
292 mutex_unlock(&data->update_lock); \
295 set_temp(hot_max, temp_hot_max, LM80_REG_TEMP_HOT_MAX);
296 set_temp(hot_hyst, temp_hot_hyst, LM80_REG_TEMP_HOT_HYST);
297 set_temp(os_max, temp_os_max, LM80_REG_TEMP_OS_MAX);
298 set_temp(os_hyst, temp_os_hyst, LM80_REG_TEMP_OS_HYST);
300 static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
303 struct lm80_data *data = lm80_update_device(dev);
304 return sprintf(buf, "%u\n", data->alarms);
307 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
310 int bitnr = to_sensor_dev_attr(attr)->index;
311 struct lm80_data *data = lm80_update_device(dev);
312 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
315 static SENSOR_DEVICE_ATTR(in0_min, S_IWUSR | S_IRUGO,
316 show_in_min, set_in_min, 0);
317 static SENSOR_DEVICE_ATTR(in1_min, S_IWUSR | S_IRUGO,
318 show_in_min, set_in_min, 1);
319 static SENSOR_DEVICE_ATTR(in2_min, S_IWUSR | S_IRUGO,
320 show_in_min, set_in_min, 2);
321 static SENSOR_DEVICE_ATTR(in3_min, S_IWUSR | S_IRUGO,
322 show_in_min, set_in_min, 3);
323 static SENSOR_DEVICE_ATTR(in4_min, S_IWUSR | S_IRUGO,
324 show_in_min, set_in_min, 4);
325 static SENSOR_DEVICE_ATTR(in5_min, S_IWUSR | S_IRUGO,
326 show_in_min, set_in_min, 5);
327 static SENSOR_DEVICE_ATTR(in6_min, S_IWUSR | S_IRUGO,
328 show_in_min, set_in_min, 6);
329 static SENSOR_DEVICE_ATTR(in0_max, S_IWUSR | S_IRUGO,
330 show_in_max, set_in_max, 0);
331 static SENSOR_DEVICE_ATTR(in1_max, S_IWUSR | S_IRUGO,
332 show_in_max, set_in_max, 1);
333 static SENSOR_DEVICE_ATTR(in2_max, S_IWUSR | S_IRUGO,
334 show_in_max, set_in_max, 2);
335 static SENSOR_DEVICE_ATTR(in3_max, S_IWUSR | S_IRUGO,
336 show_in_max, set_in_max, 3);
337 static SENSOR_DEVICE_ATTR(in4_max, S_IWUSR | S_IRUGO,
338 show_in_max, set_in_max, 4);
339 static SENSOR_DEVICE_ATTR(in5_max, S_IWUSR | S_IRUGO,
340 show_in_max, set_in_max, 5);
341 static SENSOR_DEVICE_ATTR(in6_max, S_IWUSR | S_IRUGO,
342 show_in_max, set_in_max, 6);
343 static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in_input, NULL, 0);
344 static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in_input, NULL, 1);
345 static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in_input, NULL, 2);
346 static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in_input, NULL, 3);
347 static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_in_input, NULL, 4);
348 static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, show_in_input, NULL, 5);
349 static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, show_in_input, NULL, 6);
350 static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO,
351 show_fan_min, set_fan_min, 0);
352 static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO,
353 show_fan_min, set_fan_min, 1);
354 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan_input, NULL, 0);
355 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan_input, NULL, 1);
356 static SENSOR_DEVICE_ATTR(fan1_div, S_IWUSR | S_IRUGO,
357 show_fan_div, set_fan_div, 0);
358 static SENSOR_DEVICE_ATTR(fan2_div, S_IWUSR | S_IRUGO,
359 show_fan_div, set_fan_div, 1);
360 static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input1, NULL);
361 static DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_hot_max,
363 static DEVICE_ATTR(temp1_max_hyst, S_IWUSR | S_IRUGO, show_temp_hot_hyst,
365 static DEVICE_ATTR(temp1_crit, S_IWUSR | S_IRUGO, show_temp_os_max,
367 static DEVICE_ATTR(temp1_crit_hyst, S_IWUSR | S_IRUGO, show_temp_os_hyst,
369 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
370 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
371 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
372 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
373 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
374 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 4);
375 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 5);
376 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 6);
377 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 10);
378 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 11);
379 static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_alarm, NULL, 8);
380 static SENSOR_DEVICE_ATTR(temp1_crit_alarm, S_IRUGO, show_alarm, NULL, 13);
386 static int lm80_attach_adapter(struct i2c_adapter *adapter)
388 if (!(adapter->class & I2C_CLASS_HWMON))
390 return i2c_probe(adapter, &addr_data, lm80_detect);
393 static struct attribute *lm80_attributes[] = {
394 &sensor_dev_attr_in0_min.dev_attr.attr,
395 &sensor_dev_attr_in1_min.dev_attr.attr,
396 &sensor_dev_attr_in2_min.dev_attr.attr,
397 &sensor_dev_attr_in3_min.dev_attr.attr,
398 &sensor_dev_attr_in4_min.dev_attr.attr,
399 &sensor_dev_attr_in5_min.dev_attr.attr,
400 &sensor_dev_attr_in6_min.dev_attr.attr,
401 &sensor_dev_attr_in0_max.dev_attr.attr,
402 &sensor_dev_attr_in1_max.dev_attr.attr,
403 &sensor_dev_attr_in2_max.dev_attr.attr,
404 &sensor_dev_attr_in3_max.dev_attr.attr,
405 &sensor_dev_attr_in4_max.dev_attr.attr,
406 &sensor_dev_attr_in5_max.dev_attr.attr,
407 &sensor_dev_attr_in6_max.dev_attr.attr,
408 &sensor_dev_attr_in0_input.dev_attr.attr,
409 &sensor_dev_attr_in1_input.dev_attr.attr,
410 &sensor_dev_attr_in2_input.dev_attr.attr,
411 &sensor_dev_attr_in3_input.dev_attr.attr,
412 &sensor_dev_attr_in4_input.dev_attr.attr,
413 &sensor_dev_attr_in5_input.dev_attr.attr,
414 &sensor_dev_attr_in6_input.dev_attr.attr,
415 &sensor_dev_attr_fan1_min.dev_attr.attr,
416 &sensor_dev_attr_fan2_min.dev_attr.attr,
417 &sensor_dev_attr_fan1_input.dev_attr.attr,
418 &sensor_dev_attr_fan2_input.dev_attr.attr,
419 &sensor_dev_attr_fan1_div.dev_attr.attr,
420 &sensor_dev_attr_fan2_div.dev_attr.attr,
421 &dev_attr_temp1_input.attr,
422 &dev_attr_temp1_max.attr,
423 &dev_attr_temp1_max_hyst.attr,
424 &dev_attr_temp1_crit.attr,
425 &dev_attr_temp1_crit_hyst.attr,
426 &dev_attr_alarms.attr,
427 &sensor_dev_attr_in0_alarm.dev_attr.attr,
428 &sensor_dev_attr_in1_alarm.dev_attr.attr,
429 &sensor_dev_attr_in2_alarm.dev_attr.attr,
430 &sensor_dev_attr_in3_alarm.dev_attr.attr,
431 &sensor_dev_attr_in4_alarm.dev_attr.attr,
432 &sensor_dev_attr_in5_alarm.dev_attr.attr,
433 &sensor_dev_attr_in6_alarm.dev_attr.attr,
434 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
435 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
436 &sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
437 &sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,
441 static const struct attribute_group lm80_group = {
442 .attrs = lm80_attributes,
445 static int lm80_detect(struct i2c_adapter *adapter, int address, int kind)
448 struct i2c_client *client;
449 struct lm80_data *data;
453 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
456 /* OK. For now, we presume we have a valid client. We now create the
457 client structure, even though we cannot fill it completely yet.
458 But it allows us to access lm80_{read,write}_value. */
459 if (!(data = kzalloc(sizeof(struct lm80_data), GFP_KERNEL))) {
464 client = &data->client;
465 i2c_set_clientdata(client, data);
466 client->addr = address;
467 client->adapter = adapter;
468 client->driver = &lm80_driver;
470 /* Now, we do the remaining detection. It is lousy. */
471 if (lm80_read_value(client, LM80_REG_ALARM2) & 0xc0)
473 for (i = 0x2a; i <= 0x3d; i++) {
474 cur = i2c_smbus_read_byte_data(client, i);
475 if ((i2c_smbus_read_byte_data(client, i + 0x40) != cur)
476 || (i2c_smbus_read_byte_data(client, i + 0x80) != cur)
477 || (i2c_smbus_read_byte_data(client, i + 0xc0) != cur))
481 /* Determine the chip type - only one kind supported! */
485 /* Fill in the remaining client fields */
486 strlcpy(client->name, name, I2C_NAME_SIZE);
487 mutex_init(&data->update_lock);
489 /* Tell the I2C layer a new client has arrived */
490 if ((err = i2c_attach_client(client)))
493 /* Initialize the LM80 chip */
494 lm80_init_client(client);
496 /* A few vars need to be filled upon startup */
497 data->fan_min[0] = lm80_read_value(client, LM80_REG_FAN_MIN(1));
498 data->fan_min[1] = lm80_read_value(client, LM80_REG_FAN_MIN(2));
500 /* Register sysfs hooks */
501 if ((err = sysfs_create_group(&client->dev.kobj, &lm80_group)))
504 data->hwmon_dev = hwmon_device_register(&client->dev);
505 if (IS_ERR(data->hwmon_dev)) {
506 err = PTR_ERR(data->hwmon_dev);
513 sysfs_remove_group(&client->dev.kobj, &lm80_group);
515 i2c_detach_client(client);
522 static int lm80_detach_client(struct i2c_client *client)
524 struct lm80_data *data = i2c_get_clientdata(client);
527 hwmon_device_unregister(data->hwmon_dev);
528 sysfs_remove_group(&client->dev.kobj, &lm80_group);
529 if ((err = i2c_detach_client(client)))
536 static int lm80_read_value(struct i2c_client *client, u8 reg)
538 return i2c_smbus_read_byte_data(client, reg);
541 static int lm80_write_value(struct i2c_client *client, u8 reg, u8 value)
543 return i2c_smbus_write_byte_data(client, reg, value);
546 /* Called when we have found a new LM80. */
547 static void lm80_init_client(struct i2c_client *client)
549 /* Reset all except Watchdog values and last conversion values
550 This sets fan-divs to 2, among others. This makes most other
551 initializations unnecessary */
552 lm80_write_value(client, LM80_REG_CONFIG, 0x80);
553 /* Set 11-bit temperature resolution */
554 lm80_write_value(client, LM80_REG_RES, 0x08);
556 /* Start monitoring */
557 lm80_write_value(client, LM80_REG_CONFIG, 0x01);
560 static struct lm80_data *lm80_update_device(struct device *dev)
562 struct i2c_client *client = to_i2c_client(dev);
563 struct lm80_data *data = i2c_get_clientdata(client);
566 mutex_lock(&data->update_lock);
568 if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
569 dev_dbg(&client->dev, "Starting lm80 update\n");
570 for (i = 0; i <= 6; i++) {
572 lm80_read_value(client, LM80_REG_IN(i));
574 lm80_read_value(client, LM80_REG_IN_MIN(i));
576 lm80_read_value(client, LM80_REG_IN_MAX(i));
578 data->fan[0] = lm80_read_value(client, LM80_REG_FAN1);
580 lm80_read_value(client, LM80_REG_FAN_MIN(1));
581 data->fan[1] = lm80_read_value(client, LM80_REG_FAN2);
583 lm80_read_value(client, LM80_REG_FAN_MIN(2));
586 (lm80_read_value(client, LM80_REG_TEMP) << 8) |
587 (lm80_read_value(client, LM80_REG_RES) & 0xf0);
589 lm80_read_value(client, LM80_REG_TEMP_OS_MAX);
591 lm80_read_value(client, LM80_REG_TEMP_OS_HYST);
593 lm80_read_value(client, LM80_REG_TEMP_HOT_MAX);
594 data->temp_hot_hyst =
595 lm80_read_value(client, LM80_REG_TEMP_HOT_HYST);
597 i = lm80_read_value(client, LM80_REG_FANDIV);
598 data->fan_div[0] = (i >> 2) & 0x03;
599 data->fan_div[1] = (i >> 4) & 0x03;
600 data->alarms = lm80_read_value(client, LM80_REG_ALARM1) +
601 (lm80_read_value(client, LM80_REG_ALARM2) << 8);
602 data->last_updated = jiffies;
606 mutex_unlock(&data->update_lock);
611 static int __init sensors_lm80_init(void)
613 return i2c_add_driver(&lm80_driver);
616 static void __exit sensors_lm80_exit(void)
618 i2c_del_driver(&lm80_driver);
621 MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl> and "
622 "Philip Edelbrock <phil@netroedge.com>");
623 MODULE_DESCRIPTION("LM80 driver");
624 MODULE_LICENSE("GPL");
626 module_init(sensors_lm80_init);
627 module_exit(sensors_lm80_exit);