2 * w83l786ng.c - Linux kernel driver for hardware monitoring
3 * Copyright (c) 2007 Kevin Lo <kevlo@kevlo.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation - version 2.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 * Supports following chips:
23 * Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA
24 * w83l786ng 3 2 2 2 0x7b 0x5ca3 yes no
27 #include <linux/module.h>
28 #include <linux/init.h>
29 #include <linux/slab.h>
30 #include <linux/i2c.h>
31 #include <linux/hwmon.h>
32 #include <linux/hwmon-vid.h>
33 #include <linux/hwmon-sysfs.h>
34 #include <linux/err.h>
35 #include <linux/mutex.h>
37 /* Addresses to scan */
38 static const unsigned short normal_i2c[] = { 0x2e, 0x2f, I2C_CLIENT_END };
40 /* Insmod parameters */
43 module_param(reset, bool, 0);
44 MODULE_PARM_DESC(reset, "Set to 1 to reset chip, not recommended");
46 #define W83L786NG_REG_IN_MIN(nr) (0x2C + (nr) * 2)
47 #define W83L786NG_REG_IN_MAX(nr) (0x2B + (nr) * 2)
48 #define W83L786NG_REG_IN(nr) ((nr) + 0x20)
50 #define W83L786NG_REG_FAN(nr) ((nr) + 0x28)
51 #define W83L786NG_REG_FAN_MIN(nr) ((nr) + 0x3B)
53 #define W83L786NG_REG_CONFIG 0x40
54 #define W83L786NG_REG_ALARM1 0x41
55 #define W83L786NG_REG_ALARM2 0x42
56 #define W83L786NG_REG_GPIO_EN 0x47
57 #define W83L786NG_REG_MAN_ID2 0x4C
58 #define W83L786NG_REG_MAN_ID1 0x4D
59 #define W83L786NG_REG_CHIP_ID 0x4E
61 #define W83L786NG_REG_DIODE 0x53
62 #define W83L786NG_REG_FAN_DIV 0x54
63 #define W83L786NG_REG_FAN_CFG 0x80
65 #define W83L786NG_REG_TOLERANCE 0x8D
67 static const u8 W83L786NG_REG_TEMP[2][3] = {
68 { 0x25, /* TEMP 0 in DataSheet */
69 0x35, /* TEMP 0 Over in DataSheet */
70 0x36 }, /* TEMP 0 Hyst in DataSheet */
71 { 0x26, /* TEMP 1 in DataSheet */
72 0x37, /* TEMP 1 Over in DataSheet */
73 0x38 } /* TEMP 1 Hyst in DataSheet */
76 static const u8 W83L786NG_PWM_MODE_SHIFT[] = {6, 7};
77 static const u8 W83L786NG_PWM_ENABLE_SHIFT[] = {2, 4};
79 /* FAN Duty Cycle, be used to control */
80 static const u8 W83L786NG_REG_PWM[] = {0x81, 0x87};
84 FAN_TO_REG(long rpm, int div)
88 rpm = SENSORS_LIMIT(rpm, 1, 1000000);
89 return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
92 #define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : \
94 1350000 / ((val) * (div))))
97 #define TEMP_TO_REG(val) (SENSORS_LIMIT(((val) < 0 ? \
98 (val) + 0x100 * 1000 \
99 : (val)) / 1000, 0, 0xff))
100 #define TEMP_FROM_REG(val) (((val) & 0x80 ? \
101 (val) - 0x100 : (val)) * 1000)
104 * The analog voltage inputs have 8mV LSB. Since the sysfs output is
105 * in mV as would be measured on the chip input pin, need to just
106 * multiply/divide by 8 to translate from/to register values.
108 #define IN_TO_REG(val) (SENSORS_LIMIT((((val) + 4) / 8), 0, 255))
109 #define IN_FROM_REG(val) ((val) * 8)
111 #define DIV_FROM_REG(val) (1 << (val))
117 val = SENSORS_LIMIT(val, 1, 128) >> 1;
118 for (i = 0; i < 7; i++) {
126 struct w83l786ng_data {
127 struct device *hwmon_dev;
128 struct mutex update_lock;
129 char valid; /* !=0 if following fields are valid */
130 unsigned long last_updated; /* In jiffies */
131 unsigned long last_nonvolatile; /* In jiffies, last time we update the
132 * nonvolatile registers */
143 u8 pwm_mode[2]; /* 0->DC variable voltage
144 * 1->PWM variable duty cycle */
146 u8 pwm_enable[2]; /* 1->manual
147 * 2->thermal cruise (also called SmartFan I) */
151 static int w83l786ng_probe(struct i2c_client *client,
152 const struct i2c_device_id *id);
153 static int w83l786ng_detect(struct i2c_client *client,
154 struct i2c_board_info *info);
155 static int w83l786ng_remove(struct i2c_client *client);
156 static void w83l786ng_init_client(struct i2c_client *client);
157 static struct w83l786ng_data *w83l786ng_update_device(struct device *dev);
159 static const struct i2c_device_id w83l786ng_id[] = {
163 MODULE_DEVICE_TABLE(i2c, w83l786ng_id);
165 static struct i2c_driver w83l786ng_driver = {
166 .class = I2C_CLASS_HWMON,
170 .probe = w83l786ng_probe,
171 .remove = w83l786ng_remove,
172 .id_table = w83l786ng_id,
173 .detect = w83l786ng_detect,
174 .address_list = normal_i2c,
178 w83l786ng_read_value(struct i2c_client *client, u8 reg)
180 return i2c_smbus_read_byte_data(client, reg);
184 w83l786ng_write_value(struct i2c_client *client, u8 reg, u8 value)
186 return i2c_smbus_write_byte_data(client, reg, value);
189 /* following are the sysfs callback functions */
190 #define show_in_reg(reg) \
192 show_##reg(struct device *dev, struct device_attribute *attr, \
195 int nr = to_sensor_dev_attr(attr)->index; \
196 struct w83l786ng_data *data = w83l786ng_update_device(dev); \
197 return sprintf(buf, "%d\n", IN_FROM_REG(data->reg[nr])); \
204 #define store_in_reg(REG, reg) \
206 store_in_##reg(struct device *dev, struct device_attribute *attr, \
207 const char *buf, size_t count) \
209 int nr = to_sensor_dev_attr(attr)->index; \
210 struct i2c_client *client = to_i2c_client(dev); \
211 struct w83l786ng_data *data = i2c_get_clientdata(client); \
213 int err = kstrtoul(buf, 10, &val); \
216 mutex_lock(&data->update_lock); \
217 data->in_##reg[nr] = IN_TO_REG(val); \
218 w83l786ng_write_value(client, W83L786NG_REG_IN_##REG(nr), \
219 data->in_##reg[nr]); \
220 mutex_unlock(&data->update_lock); \
224 store_in_reg(MIN, min)
225 store_in_reg(MAX, max)
227 static struct sensor_device_attribute sda_in_input[] = {
228 SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0),
229 SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1),
230 SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2),
233 static struct sensor_device_attribute sda_in_min[] = {
234 SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 0),
235 SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 1),
236 SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 2),
239 static struct sensor_device_attribute sda_in_max[] = {
240 SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 0),
241 SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 1),
242 SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 2),
245 #define show_fan_reg(reg) \
246 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
249 int nr = to_sensor_dev_attr(attr)->index; \
250 struct w83l786ng_data *data = w83l786ng_update_device(dev); \
251 return sprintf(buf, "%d\n", \
252 FAN_FROM_REG(data->fan[nr], DIV_FROM_REG(data->fan_div[nr]))); \
256 show_fan_reg(fan_min);
259 store_fan_min(struct device *dev, struct device_attribute *attr,
260 const char *buf, size_t count)
262 int nr = to_sensor_dev_attr(attr)->index;
263 struct i2c_client *client = to_i2c_client(dev);
264 struct w83l786ng_data *data = i2c_get_clientdata(client);
268 err = kstrtoul(buf, 10, &val);
272 mutex_lock(&data->update_lock);
273 data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
274 w83l786ng_write_value(client, W83L786NG_REG_FAN_MIN(nr),
276 mutex_unlock(&data->update_lock);
282 show_fan_div(struct device *dev, struct device_attribute *attr,
285 int nr = to_sensor_dev_attr(attr)->index;
286 struct w83l786ng_data *data = w83l786ng_update_device(dev);
287 return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr]));
291 * Note: we save and restore the fan minimum here, because its value is
292 * determined in part by the fan divisor. This follows the principle of
293 * least surprise; the user doesn't expect the fan minimum to change just
294 * because the divisor changed.
297 store_fan_div(struct device *dev, struct device_attribute *attr,
298 const char *buf, size_t count)
300 int nr = to_sensor_dev_attr(attr)->index;
301 struct i2c_client *client = to_i2c_client(dev);
302 struct w83l786ng_data *data = i2c_get_clientdata(client);
313 err = kstrtoul(buf, 10, &val);
318 mutex_lock(&data->update_lock);
319 min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]));
321 data->fan_div[nr] = DIV_TO_REG(val);
334 fan_div_reg = w83l786ng_read_value(client, W83L786NG_REG_FAN_DIV)
337 tmp_fan_div = (data->fan_div[nr] << new_shift) & ~keep_mask;
339 w83l786ng_write_value(client, W83L786NG_REG_FAN_DIV,
340 fan_div_reg | tmp_fan_div);
342 /* Restore fan_min */
343 data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
344 w83l786ng_write_value(client, W83L786NG_REG_FAN_MIN(nr),
346 mutex_unlock(&data->update_lock);
351 static struct sensor_device_attribute sda_fan_input[] = {
352 SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0),
353 SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1),
356 static struct sensor_device_attribute sda_fan_min[] = {
357 SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min,
359 SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min,
363 static struct sensor_device_attribute sda_fan_div[] = {
364 SENSOR_ATTR(fan1_div, S_IWUSR | S_IRUGO, show_fan_div,
366 SENSOR_ATTR(fan2_div, S_IWUSR | S_IRUGO, show_fan_div,
371 /* read/write the temperature, includes measured value and limits */
374 show_temp(struct device *dev, struct device_attribute *attr, char *buf)
376 struct sensor_device_attribute_2 *sensor_attr =
377 to_sensor_dev_attr_2(attr);
378 int nr = sensor_attr->nr;
379 int index = sensor_attr->index;
380 struct w83l786ng_data *data = w83l786ng_update_device(dev);
381 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr][index]));
385 store_temp(struct device *dev, struct device_attribute *attr,
386 const char *buf, size_t count)
388 struct sensor_device_attribute_2 *sensor_attr =
389 to_sensor_dev_attr_2(attr);
390 int nr = sensor_attr->nr;
391 int index = sensor_attr->index;
392 struct i2c_client *client = to_i2c_client(dev);
393 struct w83l786ng_data *data = i2c_get_clientdata(client);
397 err = kstrtol(buf, 10, &val);
401 mutex_lock(&data->update_lock);
402 data->temp[nr][index] = TEMP_TO_REG(val);
403 w83l786ng_write_value(client, W83L786NG_REG_TEMP[nr][index],
404 data->temp[nr][index]);
405 mutex_unlock(&data->update_lock);
410 static struct sensor_device_attribute_2 sda_temp_input[] = {
411 SENSOR_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0),
412 SENSOR_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 1, 0),
415 static struct sensor_device_attribute_2 sda_temp_max[] = {
416 SENSOR_ATTR_2(temp1_max, S_IRUGO | S_IWUSR,
417 show_temp, store_temp, 0, 1),
418 SENSOR_ATTR_2(temp2_max, S_IRUGO | S_IWUSR,
419 show_temp, store_temp, 1, 1),
422 static struct sensor_device_attribute_2 sda_temp_max_hyst[] = {
423 SENSOR_ATTR_2(temp1_max_hyst, S_IRUGO | S_IWUSR,
424 show_temp, store_temp, 0, 2),
425 SENSOR_ATTR_2(temp2_max_hyst, S_IRUGO | S_IWUSR,
426 show_temp, store_temp, 1, 2),
429 #define show_pwm_reg(reg) \
430 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
433 struct w83l786ng_data *data = w83l786ng_update_device(dev); \
434 int nr = to_sensor_dev_attr(attr)->index; \
435 return sprintf(buf, "%d\n", data->reg[nr]); \
438 show_pwm_reg(pwm_mode)
439 show_pwm_reg(pwm_enable)
443 store_pwm_mode(struct device *dev, struct device_attribute *attr,
444 const char *buf, size_t count)
446 int nr = to_sensor_dev_attr(attr)->index;
447 struct i2c_client *client = to_i2c_client(dev);
448 struct w83l786ng_data *data = i2c_get_clientdata(client);
453 err = kstrtoul(buf, 10, &val);
459 mutex_lock(&data->update_lock);
460 data->pwm_mode[nr] = val;
461 reg = w83l786ng_read_value(client, W83L786NG_REG_FAN_CFG);
462 reg &= ~(1 << W83L786NG_PWM_MODE_SHIFT[nr]);
464 reg |= 1 << W83L786NG_PWM_MODE_SHIFT[nr];
465 w83l786ng_write_value(client, W83L786NG_REG_FAN_CFG, reg);
466 mutex_unlock(&data->update_lock);
471 store_pwm(struct device *dev, struct device_attribute *attr,
472 const char *buf, size_t count)
474 int nr = to_sensor_dev_attr(attr)->index;
475 struct i2c_client *client = to_i2c_client(dev);
476 struct w83l786ng_data *data = i2c_get_clientdata(client);
480 err = kstrtoul(buf, 10, &val);
483 val = SENSORS_LIMIT(val, 0, 255);
485 mutex_lock(&data->update_lock);
487 w83l786ng_write_value(client, W83L786NG_REG_PWM[nr], val);
488 mutex_unlock(&data->update_lock);
493 store_pwm_enable(struct device *dev, struct device_attribute *attr,
494 const char *buf, size_t count)
496 int nr = to_sensor_dev_attr(attr)->index;
497 struct i2c_client *client = to_i2c_client(dev);
498 struct w83l786ng_data *data = i2c_get_clientdata(client);
503 err = kstrtoul(buf, 10, &val);
507 if (!val || val > 2) /* only modes 1 and 2 are supported */
510 mutex_lock(&data->update_lock);
511 reg = w83l786ng_read_value(client, W83L786NG_REG_FAN_CFG);
512 data->pwm_enable[nr] = val;
513 reg &= ~(0x02 << W83L786NG_PWM_ENABLE_SHIFT[nr]);
514 reg |= (val - 1) << W83L786NG_PWM_ENABLE_SHIFT[nr];
515 w83l786ng_write_value(client, W83L786NG_REG_FAN_CFG, reg);
516 mutex_unlock(&data->update_lock);
520 static struct sensor_device_attribute sda_pwm[] = {
521 SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0),
522 SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1),
525 static struct sensor_device_attribute sda_pwm_mode[] = {
526 SENSOR_ATTR(pwm1_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
528 SENSOR_ATTR(pwm2_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
532 static struct sensor_device_attribute sda_pwm_enable[] = {
533 SENSOR_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
534 store_pwm_enable, 0),
535 SENSOR_ATTR(pwm2_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
536 store_pwm_enable, 1),
539 /* For Smart Fan I/Thermal Cruise and Smart Fan II */
541 show_tolerance(struct device *dev, struct device_attribute *attr, char *buf)
543 int nr = to_sensor_dev_attr(attr)->index;
544 struct w83l786ng_data *data = w83l786ng_update_device(dev);
545 return sprintf(buf, "%ld\n", (long)data->tolerance[nr]);
549 store_tolerance(struct device *dev, struct device_attribute *attr,
550 const char *buf, size_t count)
552 int nr = to_sensor_dev_attr(attr)->index;
553 struct i2c_client *client = to_i2c_client(dev);
554 struct w83l786ng_data *data = i2c_get_clientdata(client);
555 u8 tol_tmp, tol_mask;
559 err = kstrtoul(buf, 10, &val);
563 mutex_lock(&data->update_lock);
564 tol_mask = w83l786ng_read_value(client,
565 W83L786NG_REG_TOLERANCE) & ((nr == 1) ? 0x0f : 0xf0);
566 tol_tmp = SENSORS_LIMIT(val, 0, 15);
568 data->tolerance[nr] = tol_tmp;
572 w83l786ng_write_value(client, W83L786NG_REG_TOLERANCE,
574 mutex_unlock(&data->update_lock);
578 static struct sensor_device_attribute sda_tolerance[] = {
579 SENSOR_ATTR(pwm1_tolerance, S_IWUSR | S_IRUGO,
580 show_tolerance, store_tolerance, 0),
581 SENSOR_ATTR(pwm2_tolerance, S_IWUSR | S_IRUGO,
582 show_tolerance, store_tolerance, 1),
586 #define IN_UNIT_ATTRS(X) \
587 &sda_in_input[X].dev_attr.attr, \
588 &sda_in_min[X].dev_attr.attr, \
589 &sda_in_max[X].dev_attr.attr
591 #define FAN_UNIT_ATTRS(X) \
592 &sda_fan_input[X].dev_attr.attr, \
593 &sda_fan_min[X].dev_attr.attr, \
594 &sda_fan_div[X].dev_attr.attr
596 #define TEMP_UNIT_ATTRS(X) \
597 &sda_temp_input[X].dev_attr.attr, \
598 &sda_temp_max[X].dev_attr.attr, \
599 &sda_temp_max_hyst[X].dev_attr.attr
601 #define PWM_UNIT_ATTRS(X) \
602 &sda_pwm[X].dev_attr.attr, \
603 &sda_pwm_mode[X].dev_attr.attr, \
604 &sda_pwm_enable[X].dev_attr.attr
606 #define TOLERANCE_UNIT_ATTRS(X) \
607 &sda_tolerance[X].dev_attr.attr
609 static struct attribute *w83l786ng_attributes[] = {
619 TOLERANCE_UNIT_ATTRS(0),
620 TOLERANCE_UNIT_ATTRS(1),
624 static const struct attribute_group w83l786ng_group = {
625 .attrs = w83l786ng_attributes,
629 w83l786ng_detect(struct i2c_client *client, struct i2c_board_info *info)
631 struct i2c_adapter *adapter = client->adapter;
635 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
639 if ((w83l786ng_read_value(client, W83L786NG_REG_CONFIG) & 0x80)) {
640 dev_dbg(&adapter->dev, "W83L786NG detection failed at 0x%02x\n",
646 man_id = (w83l786ng_read_value(client, W83L786NG_REG_MAN_ID1) << 8) +
647 w83l786ng_read_value(client, W83L786NG_REG_MAN_ID2);
648 chip_id = w83l786ng_read_value(client, W83L786NG_REG_CHIP_ID);
650 if (man_id != 0x5CA3 || /* Winbond */
651 chip_id != 0x80) { /* W83L786NG */
652 dev_dbg(&adapter->dev,
653 "Unsupported chip (man_id=0x%04X, chip_id=0x%02X)\n",
658 strlcpy(info->type, "w83l786ng", I2C_NAME_SIZE);
664 w83l786ng_probe(struct i2c_client *client, const struct i2c_device_id *id)
666 struct device *dev = &client->dev;
667 struct w83l786ng_data *data;
671 data = kzalloc(sizeof(struct w83l786ng_data), GFP_KERNEL);
677 i2c_set_clientdata(client, data);
678 mutex_init(&data->update_lock);
680 /* Initialize the chip */
681 w83l786ng_init_client(client);
683 /* A few vars need to be filled upon startup */
684 for (i = 0; i < 2; i++) {
685 data->fan_min[i] = w83l786ng_read_value(client,
686 W83L786NG_REG_FAN_MIN(i));
689 /* Update the fan divisor */
690 reg_tmp = w83l786ng_read_value(client, W83L786NG_REG_FAN_DIV);
691 data->fan_div[0] = reg_tmp & 0x07;
692 data->fan_div[1] = (reg_tmp >> 4) & 0x07;
694 /* Register sysfs hooks */
695 err = sysfs_create_group(&client->dev.kobj, &w83l786ng_group);
699 data->hwmon_dev = hwmon_device_register(dev);
700 if (IS_ERR(data->hwmon_dev)) {
701 err = PTR_ERR(data->hwmon_dev);
707 /* Unregister sysfs hooks */
710 sysfs_remove_group(&client->dev.kobj, &w83l786ng_group);
717 w83l786ng_remove(struct i2c_client *client)
719 struct w83l786ng_data *data = i2c_get_clientdata(client);
721 hwmon_device_unregister(data->hwmon_dev);
722 sysfs_remove_group(&client->dev.kobj, &w83l786ng_group);
730 w83l786ng_init_client(struct i2c_client *client)
735 w83l786ng_write_value(client, W83L786NG_REG_CONFIG, 0x80);
737 /* Start monitoring */
738 tmp = w83l786ng_read_value(client, W83L786NG_REG_CONFIG);
740 w83l786ng_write_value(client, W83L786NG_REG_CONFIG, tmp | 0x01);
743 static struct w83l786ng_data *w83l786ng_update_device(struct device *dev)
745 struct i2c_client *client = to_i2c_client(dev);
746 struct w83l786ng_data *data = i2c_get_clientdata(client);
750 mutex_lock(&data->update_lock);
751 if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
753 dev_dbg(&client->dev, "Updating w83l786ng data.\n");
755 /* Update the voltages measured value and limits */
756 for (i = 0; i < 3; i++) {
757 data->in[i] = w83l786ng_read_value(client,
758 W83L786NG_REG_IN(i));
759 data->in_min[i] = w83l786ng_read_value(client,
760 W83L786NG_REG_IN_MIN(i));
761 data->in_max[i] = w83l786ng_read_value(client,
762 W83L786NG_REG_IN_MAX(i));
765 /* Update the fan counts and limits */
766 for (i = 0; i < 2; i++) {
767 data->fan[i] = w83l786ng_read_value(client,
768 W83L786NG_REG_FAN(i));
769 data->fan_min[i] = w83l786ng_read_value(client,
770 W83L786NG_REG_FAN_MIN(i));
773 /* Update the fan divisor */
774 reg_tmp = w83l786ng_read_value(client, W83L786NG_REG_FAN_DIV);
775 data->fan_div[0] = reg_tmp & 0x07;
776 data->fan_div[1] = (reg_tmp >> 4) & 0x07;
778 pwmcfg = w83l786ng_read_value(client, W83L786NG_REG_FAN_CFG);
779 for (i = 0; i < 2; i++) {
781 ((pwmcfg >> W83L786NG_PWM_MODE_SHIFT[i]) & 1)
783 data->pwm_enable[i] =
784 ((pwmcfg >> W83L786NG_PWM_ENABLE_SHIFT[i]) & 2) + 1;
785 data->pwm[i] = w83l786ng_read_value(client,
786 W83L786NG_REG_PWM[i]);
790 /* Update the temperature sensors */
791 for (i = 0; i < 2; i++) {
792 for (j = 0; j < 3; j++) {
793 data->temp[i][j] = w83l786ng_read_value(client,
794 W83L786NG_REG_TEMP[i][j]);
798 /* Update Smart Fan I/II tolerance */
799 reg_tmp = w83l786ng_read_value(client, W83L786NG_REG_TOLERANCE);
800 data->tolerance[0] = reg_tmp & 0x0f;
801 data->tolerance[1] = (reg_tmp >> 4) & 0x0f;
803 data->last_updated = jiffies;
808 mutex_unlock(&data->update_lock);
813 module_i2c_driver(w83l786ng_driver);
815 MODULE_AUTHOR("Kevin Lo");
816 MODULE_DESCRIPTION("w83l786ng driver");
817 MODULE_LICENSE("GPL");