2 * adt7475 - Thermal sensor driver for the ADT7475 chip and derivatives
3 * Copyright (C) 2007-2008, Advanced Micro Devices, Inc.
4 * Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net>
5 * Copyright (C) 2008 Hans de Goede <hdegoede@redhat.com>
6 * Copyright (C) 2009 Jean Delvare <khali@linux-fr.org>
8 * Derived from the lm83 driver by Jean Delvare
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
15 #include <linux/module.h>
16 #include <linux/init.h>
17 #include <linux/slab.h>
18 #include <linux/i2c.h>
19 #include <linux/hwmon.h>
20 #include <linux/hwmon-sysfs.h>
21 #include <linux/err.h>
23 /* Indexes for the sysfs hooks */
34 /* These are unique identifiers for the sysfs functions - unlike the
35 numbers above, these are not also indexes into an array
41 /* 7475 Common Registers */
43 #define REG_VTT 0x1E /* ADT7490 only */
44 #define REG_EXTEND3 0x1F /* ADT7490 only */
46 #define REG_VOLTAGE_BASE 0x20
47 #define REG_TEMP_BASE 0x25
48 #define REG_TACH_BASE 0x28
49 #define REG_PWM_BASE 0x30
50 #define REG_PWM_MAX_BASE 0x38
52 #define REG_DEVID 0x3D
53 #define REG_VENDID 0x3E
54 #define REG_DEVID2 0x3F
56 #define REG_STATUS1 0x41
57 #define REG_STATUS2 0x42
59 #define REG_VOLTAGE_MIN_BASE 0x44
60 #define REG_VOLTAGE_MAX_BASE 0x45
62 #define REG_TEMP_MIN_BASE 0x4E
63 #define REG_TEMP_MAX_BASE 0x4F
65 #define REG_TACH_MIN_BASE 0x54
67 #define REG_PWM_CONFIG_BASE 0x5C
69 #define REG_TEMP_TRANGE_BASE 0x5F
71 #define REG_PWM_MIN_BASE 0x64
73 #define REG_TEMP_TMIN_BASE 0x67
74 #define REG_TEMP_THERM_BASE 0x6A
76 #define REG_REMOTE1_HYSTERSIS 0x6D
77 #define REG_REMOTE2_HYSTERSIS 0x6E
79 #define REG_TEMP_OFFSET_BASE 0x70
81 #define REG_EXTEND1 0x76
82 #define REG_EXTEND2 0x77
84 #define REG_CONFIG3 0x78
85 #define REG_CONFIG5 0x7C
86 #define REG_CONFIG4 0x7D
88 #define REG_STATUS4 0x81 /* ADT7490 only */
90 #define REG_VTT_MIN 0x84 /* ADT7490 only */
91 #define REG_VTT_MAX 0x86 /* ADT7490 only */
93 #define CONFIG3_SMBALERT 0x01
94 #define CONFIG3_THERM 0x02
96 #define CONFIG4_PINFUNC 0x03
97 #define CONFIG4_MAXDUTY 0x08
99 #define CONFIG5_TWOSCOMP 0x01
100 #define CONFIG5_TEMPOFFSET 0x02
102 /* ADT7475 Settings */
104 #define ADT7475_VOLTAGE_COUNT 5 /* Not counting Vtt */
105 #define ADT7475_TEMP_COUNT 3
106 #define ADT7475_TACH_COUNT 4
107 #define ADT7475_PWM_COUNT 3
109 /* Macro to read the registers */
111 #define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg))
113 /* Macros to easily index the registers */
115 #define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2))
116 #define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2))
118 #define PWM_REG(idx) (REG_PWM_BASE + (idx))
119 #define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx))
120 #define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx))
121 #define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx))
123 #define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx))
124 #define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2))
125 #define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2))
127 #define TEMP_REG(idx) (REG_TEMP_BASE + (idx))
128 #define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2))
129 #define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2))
130 #define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx))
131 #define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx))
132 #define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx))
133 #define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx))
135 static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
137 I2C_CLIENT_INSMOD_3(adt7473, adt7475, adt7490);
139 static const struct i2c_device_id adt7475_id[] = {
140 { "adt7473", adt7473 },
141 { "adt7475", adt7475 },
142 { "adt7490", adt7490 },
145 MODULE_DEVICE_TABLE(i2c, adt7475_id);
147 struct adt7475_data {
148 struct device *hwmon_dev;
151 unsigned long measure_updated;
152 unsigned long limits_updated;
170 static struct i2c_driver adt7475_driver;
171 static struct adt7475_data *adt7475_update_device(struct device *dev);
172 static void adt7475_read_hystersis(struct i2c_client *client);
173 static void adt7475_read_pwm(struct i2c_client *client, int index);
175 /* Given a temp value, convert it to register value */
177 static inline u16 temp2reg(struct adt7475_data *data, long val)
181 if (!(data->config5 & CONFIG5_TWOSCOMP)) {
182 val = SENSORS_LIMIT(val, -64000, 191000);
183 ret = (val + 64500) / 1000;
185 val = SENSORS_LIMIT(val, -128000, 127000);
187 ret = (256500 + val) / 1000;
189 ret = (val + 500) / 1000;
195 /* Given a register value, convert it to a real temp value */
197 static inline int reg2temp(struct adt7475_data *data, u16 reg)
199 if (data->config5 & CONFIG5_TWOSCOMP) {
201 return (reg - 1024) * 250;
205 return (reg - 256) * 250;
208 static inline int tach2rpm(u16 tach)
210 if (tach == 0 || tach == 0xFFFF)
213 return (90000 * 60) / tach;
216 static inline u16 rpm2tach(unsigned long rpm)
221 return SENSORS_LIMIT((90000 * 60) / rpm, 1, 0xFFFF);
224 /* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */
225 static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 1][2] = {
226 { 45, 94 }, /* +2.5V */
227 { 175, 525 }, /* Vccp */
228 { 68, 71 }, /* Vcc */
229 { 93, 47 }, /* +5V */
230 { 120, 20 }, /* +12V */
231 { 45, 45 }, /* Vtt */
234 static inline int reg2volt(int channel, u16 reg)
236 const int *r = adt7473_in_scaling[channel];
238 return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024);
241 static inline u16 volt2reg(int channel, long volt)
243 const int *r = adt7473_in_scaling[channel];
246 reg = (volt * r[1] * 1024) / ((r[0] + r[1]) * 2250);
247 return SENSORS_LIMIT(reg, 0, 1023) & (0xff << 2);
250 static u16 adt7475_read_word(struct i2c_client *client, int reg)
254 val = i2c_smbus_read_byte_data(client, reg);
255 val |= (i2c_smbus_read_byte_data(client, reg + 1) << 8);
260 static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)
262 i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
263 i2c_smbus_write_byte_data(client, reg, val & 0xFF);
266 /* Find the nearest value in a table - used for pwm frequency and
268 static int find_nearest(long val, const int *array, int size)
275 if (val > array[size - 1])
278 for (i = 0; i < size - 1; i++) {
281 if (val > array[i + 1])
285 b = array[i + 1] - val;
287 return (a <= b) ? i : i + 1;
293 static ssize_t show_voltage(struct device *dev, struct device_attribute *attr,
296 struct adt7475_data *data = adt7475_update_device(dev);
297 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
302 return sprintf(buf, "%d\n",
303 (data->alarms >> sattr->index) & 1);
305 val = data->voltage[sattr->nr][sattr->index];
306 return sprintf(buf, "%d\n", reg2volt(sattr->index, val));
310 static ssize_t set_voltage(struct device *dev, struct device_attribute *attr,
311 const char *buf, size_t count)
314 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
315 struct i2c_client *client = to_i2c_client(dev);
316 struct adt7475_data *data = i2c_get_clientdata(client);
320 if (strict_strtol(buf, 10, &val))
323 mutex_lock(&data->lock);
325 data->voltage[sattr->nr][sattr->index] = volt2reg(sattr->index, val);
327 if (sattr->index < ADT7475_VOLTAGE_COUNT) {
328 if (sattr->nr == MIN)
329 reg = VOLTAGE_MIN_REG(sattr->index);
331 reg = VOLTAGE_MAX_REG(sattr->index);
333 if (sattr->nr == MIN)
339 i2c_smbus_write_byte_data(client, reg,
340 data->voltage[sattr->nr][sattr->index] >> 2);
341 mutex_unlock(&data->lock);
346 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
349 struct adt7475_data *data = adt7475_update_device(dev);
350 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
355 mutex_lock(&data->lock);
356 out = data->temp[sattr->nr][sattr->index];
357 if (sattr->index != 1)
358 out = (out >> 4) & 0xF;
361 /* Show the value as an absolute number tied to
363 out = reg2temp(data, data->temp[THERM][sattr->index]) -
365 mutex_unlock(&data->lock);
369 /* Offset is always 2's complement, regardless of the
370 * setting in CONFIG5 */
371 mutex_lock(&data->lock);
372 out = (s8)data->temp[sattr->nr][sattr->index];
373 if (data->config5 & CONFIG5_TEMPOFFSET)
377 mutex_unlock(&data->lock);
381 out = (data->alarms >> (sattr->index + 4)) & 1;
385 /* Note - only for remote1 and remote2 */
386 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000));
390 /* All other temp values are in the configured format */
391 out = reg2temp(data, data->temp[sattr->nr][sattr->index]);
394 return sprintf(buf, "%d\n", out);
397 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
398 const char *buf, size_t count)
400 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
401 struct i2c_client *client = to_i2c_client(dev);
402 struct adt7475_data *data = i2c_get_clientdata(client);
403 unsigned char reg = 0;
408 if (strict_strtol(buf, 10, &val))
411 mutex_lock(&data->lock);
413 /* We need the config register in all cases for temp <-> reg conv. */
414 data->config5 = adt7475_read(REG_CONFIG5);
418 if (data->config5 & CONFIG5_TEMPOFFSET) {
419 val = SENSORS_LIMIT(val, -63000, 127000);
420 out = data->temp[OFFSET][sattr->index] = val / 1000;
422 val = SENSORS_LIMIT(val, -63000, 64000);
423 out = data->temp[OFFSET][sattr->index] = val / 500;
428 /* The value will be given as an absolute value, turn it
429 into an offset based on THERM */
431 /* Read fresh THERM and HYSTERSIS values from the chip */
432 data->temp[THERM][sattr->index] =
433 adt7475_read(TEMP_THERM_REG(sattr->index)) << 2;
434 adt7475_read_hystersis(client);
436 temp = reg2temp(data, data->temp[THERM][sattr->index]);
437 val = SENSORS_LIMIT(val, temp - 15000, temp);
438 val = (temp - val) / 1000;
440 if (sattr->index != 1) {
441 data->temp[HYSTERSIS][sattr->index] &= 0xF0;
442 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4;
444 data->temp[HYSTERSIS][sattr->index] &= 0x0F;
445 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF);
448 out = data->temp[HYSTERSIS][sattr->index];
452 data->temp[sattr->nr][sattr->index] = temp2reg(data, val);
454 /* We maintain an extra 2 digits of precision for simplicity
455 * - shift those back off before writing the value */
456 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2);
461 reg = TEMP_MIN_REG(sattr->index);
464 reg = TEMP_MAX_REG(sattr->index);
467 reg = TEMP_OFFSET_REG(sattr->index);
470 reg = TEMP_TMIN_REG(sattr->index);
473 reg = TEMP_THERM_REG(sattr->index);
476 if (sattr->index != 2)
477 reg = REG_REMOTE1_HYSTERSIS;
479 reg = REG_REMOTE2_HYSTERSIS;
484 i2c_smbus_write_byte_data(client, reg, out);
486 mutex_unlock(&data->lock);
490 /* Table of autorange values - the user will write the value in millidegrees,
491 and we'll convert it */
492 static const int autorange_table[] = {
493 2000, 2500, 3330, 4000, 5000, 6670, 8000,
494 10000, 13330, 16000, 20000, 26670, 32000, 40000,
498 static ssize_t show_point2(struct device *dev, struct device_attribute *attr,
501 struct adt7475_data *data = adt7475_update_device(dev);
502 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
505 mutex_lock(&data->lock);
506 out = (data->range[sattr->index] >> 4) & 0x0F;
507 val = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
508 mutex_unlock(&data->lock);
510 return sprintf(buf, "%d\n", val + autorange_table[out]);
513 static ssize_t set_point2(struct device *dev, struct device_attribute *attr,
514 const char *buf, size_t count)
516 struct i2c_client *client = to_i2c_client(dev);
517 struct adt7475_data *data = i2c_get_clientdata(client);
518 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
522 if (strict_strtol(buf, 10, &val))
525 mutex_lock(&data->lock);
527 /* Get a fresh copy of the needed registers */
528 data->config5 = adt7475_read(REG_CONFIG5);
529 data->temp[AUTOMIN][sattr->index] =
530 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2;
531 data->range[sattr->index] =
532 adt7475_read(TEMP_TRANGE_REG(sattr->index));
534 /* The user will write an absolute value, so subtract the start point
535 to figure the range */
536 temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
537 val = SENSORS_LIMIT(val, temp + autorange_table[0],
538 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]);
541 /* Find the nearest table entry to what the user wrote */
542 val = find_nearest(val, autorange_table, ARRAY_SIZE(autorange_table));
544 data->range[sattr->index] &= ~0xF0;
545 data->range[sattr->index] |= val << 4;
547 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
548 data->range[sattr->index]);
550 mutex_unlock(&data->lock);
554 static ssize_t show_tach(struct device *dev, struct device_attribute *attr,
557 struct adt7475_data *data = adt7475_update_device(dev);
558 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
561 if (sattr->nr == ALARM)
562 out = (data->alarms >> (sattr->index + 10)) & 1;
564 out = tach2rpm(data->tach[sattr->nr][sattr->index]);
566 return sprintf(buf, "%d\n", out);
569 static ssize_t set_tach(struct device *dev, struct device_attribute *attr,
570 const char *buf, size_t count)
573 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
574 struct i2c_client *client = to_i2c_client(dev);
575 struct adt7475_data *data = i2c_get_clientdata(client);
578 if (strict_strtoul(buf, 10, &val))
581 mutex_lock(&data->lock);
583 data->tach[MIN][sattr->index] = rpm2tach(val);
585 adt7475_write_word(client, TACH_MIN_REG(sattr->index),
586 data->tach[MIN][sattr->index]);
588 mutex_unlock(&data->lock);
592 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
595 struct adt7475_data *data = adt7475_update_device(dev);
596 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
598 return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);
601 static ssize_t show_pwmchan(struct device *dev, struct device_attribute *attr,
604 struct adt7475_data *data = adt7475_update_device(dev);
605 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
607 return sprintf(buf, "%d\n", data->pwmchan[sattr->index]);
610 static ssize_t show_pwmctrl(struct device *dev, struct device_attribute *attr,
613 struct adt7475_data *data = adt7475_update_device(dev);
614 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
616 return sprintf(buf, "%d\n", data->pwmctl[sattr->index]);
619 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
620 const char *buf, size_t count)
623 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
624 struct i2c_client *client = to_i2c_client(dev);
625 struct adt7475_data *data = i2c_get_clientdata(client);
626 unsigned char reg = 0;
629 if (strict_strtol(buf, 10, &val))
632 mutex_lock(&data->lock);
636 /* Get a fresh value for CONTROL */
637 data->pwm[CONTROL][sattr->index] =
638 adt7475_read(PWM_CONFIG_REG(sattr->index));
640 /* If we are not in manual mode, then we shouldn't allow
641 * the user to set the pwm speed */
642 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) {
643 mutex_unlock(&data->lock);
647 reg = PWM_REG(sattr->index);
651 reg = PWM_MIN_REG(sattr->index);
655 reg = PWM_MAX_REG(sattr->index);
659 data->pwm[sattr->nr][sattr->index] = SENSORS_LIMIT(val, 0, 0xFF);
660 i2c_smbus_write_byte_data(client, reg,
661 data->pwm[sattr->nr][sattr->index]);
663 mutex_unlock(&data->lock);
668 /* Called by set_pwmctrl and set_pwmchan */
670 static int hw_set_pwm(struct i2c_client *client, int index,
671 unsigned int pwmctl, unsigned int pwmchan)
673 struct adt7475_data *data = i2c_get_clientdata(client);
678 val = 0x03; /* Run at full speed */
681 val = 0x07; /* Manual mode */
686 /* Remote1 controls PWM */
690 /* local controls PWM */
694 /* remote2 controls PWM */
698 /* local/remote2 control PWM */
702 /* All three control PWM */
713 data->pwmctl[index] = pwmctl;
714 data->pwmchan[index] = pwmchan;
716 data->pwm[CONTROL][index] &= ~0xE0;
717 data->pwm[CONTROL][index] |= (val & 7) << 5;
719 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
720 data->pwm[CONTROL][index]);
725 static ssize_t set_pwmchan(struct device *dev, struct device_attribute *attr,
726 const char *buf, size_t count)
728 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
729 struct i2c_client *client = to_i2c_client(dev);
730 struct adt7475_data *data = i2c_get_clientdata(client);
734 if (strict_strtol(buf, 10, &val))
737 mutex_lock(&data->lock);
738 /* Read Modify Write PWM values */
739 adt7475_read_pwm(client, sattr->index);
740 r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val);
743 mutex_unlock(&data->lock);
748 static ssize_t set_pwmctrl(struct device *dev, struct device_attribute *attr,
749 const char *buf, size_t count)
751 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
752 struct i2c_client *client = to_i2c_client(dev);
753 struct adt7475_data *data = i2c_get_clientdata(client);
757 if (strict_strtol(buf, 10, &val))
760 mutex_lock(&data->lock);
761 /* Read Modify Write PWM values */
762 adt7475_read_pwm(client, sattr->index);
763 r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]);
766 mutex_unlock(&data->lock);
771 /* List of frequencies for the PWM */
772 static const int pwmfreq_table[] = {
773 11, 14, 22, 29, 35, 44, 58, 88
776 static ssize_t show_pwmfreq(struct device *dev, struct device_attribute *attr,
779 struct adt7475_data *data = adt7475_update_device(dev);
780 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
782 return sprintf(buf, "%d\n",
783 pwmfreq_table[data->range[sattr->index] & 7]);
786 static ssize_t set_pwmfreq(struct device *dev, struct device_attribute *attr,
787 const char *buf, size_t count)
789 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
790 struct i2c_client *client = to_i2c_client(dev);
791 struct adt7475_data *data = i2c_get_clientdata(client);
795 if (strict_strtol(buf, 10, &val))
798 out = find_nearest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));
800 mutex_lock(&data->lock);
802 data->range[sattr->index] =
803 adt7475_read(TEMP_TRANGE_REG(sattr->index));
804 data->range[sattr->index] &= ~7;
805 data->range[sattr->index] |= out;
807 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
808 data->range[sattr->index]);
810 mutex_unlock(&data->lock);
814 static ssize_t show_pwm_at_crit(struct device *dev,
815 struct device_attribute *devattr, char *buf)
817 struct adt7475_data *data = adt7475_update_device(dev);
818 return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));
821 static ssize_t set_pwm_at_crit(struct device *dev,
822 struct device_attribute *devattr,
823 const char *buf, size_t count)
825 struct i2c_client *client = to_i2c_client(dev);
826 struct adt7475_data *data = i2c_get_clientdata(client);
829 if (strict_strtol(buf, 10, &val))
831 if (val != 0 && val != 1)
834 mutex_lock(&data->lock);
835 data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);
837 data->config4 |= CONFIG4_MAXDUTY;
839 data->config4 &= ~CONFIG4_MAXDUTY;
840 i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);
841 mutex_unlock(&data->lock);
846 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_voltage, NULL, INPUT, 0);
847 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_voltage,
848 set_voltage, MAX, 0);
849 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_voltage,
850 set_voltage, MIN, 0);
851 static SENSOR_DEVICE_ATTR_2(in0_alarm, S_IRUGO, show_voltage, NULL, ALARM, 0);
852 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_voltage, NULL, INPUT, 1);
853 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_voltage,
854 set_voltage, MAX, 1);
855 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_voltage,
856 set_voltage, MIN, 1);
857 static SENSOR_DEVICE_ATTR_2(in1_alarm, S_IRUGO, show_voltage, NULL, ALARM, 1);
858 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_voltage, NULL, INPUT, 2);
859 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_voltage,
860 set_voltage, MAX, 2);
861 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_voltage,
862 set_voltage, MIN, 2);
863 static SENSOR_DEVICE_ATTR_2(in2_alarm, S_IRUGO, show_voltage, NULL, ALARM, 2);
864 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_voltage, NULL, INPUT, 3);
865 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_voltage,
866 set_voltage, MAX, 3);
867 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_voltage,
868 set_voltage, MIN, 3);
869 static SENSOR_DEVICE_ATTR_2(in3_alarm, S_IRUGO, show_voltage, NULL, ALARM, 3);
870 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_voltage, NULL, INPUT, 4);
871 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_voltage,
872 set_voltage, MAX, 4);
873 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_voltage,
874 set_voltage, MIN, 4);
875 static SENSOR_DEVICE_ATTR_2(in4_alarm, S_IRUGO, show_voltage, NULL, ALARM, 8);
876 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_voltage, NULL, INPUT, 5);
877 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_voltage,
878 set_voltage, MAX, 5);
879 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_voltage,
880 set_voltage, MIN, 5);
881 static SENSOR_DEVICE_ATTR_2(in5_alarm, S_IRUGO, show_voltage, NULL, ALARM, 31);
882 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, INPUT, 0);
883 static SENSOR_DEVICE_ATTR_2(temp1_alarm, S_IRUGO, show_temp, NULL, ALARM, 0);
884 static SENSOR_DEVICE_ATTR_2(temp1_fault, S_IRUGO, show_temp, NULL, FAULT, 0);
885 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
887 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
889 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
890 set_temp, OFFSET, 0);
891 static SENSOR_DEVICE_ATTR_2(temp1_auto_point1_temp, S_IRUGO | S_IWUSR,
892 show_temp, set_temp, AUTOMIN, 0);
893 static SENSOR_DEVICE_ATTR_2(temp1_auto_point2_temp, S_IRUGO | S_IWUSR,
894 show_point2, set_point2, 0, 0);
895 static SENSOR_DEVICE_ATTR_2(temp1_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
897 static SENSOR_DEVICE_ATTR_2(temp1_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
898 set_temp, HYSTERSIS, 0);
899 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, INPUT, 1);
900 static SENSOR_DEVICE_ATTR_2(temp2_alarm, S_IRUGO, show_temp, NULL, ALARM, 1);
901 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
903 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
905 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
906 set_temp, OFFSET, 1);
907 static SENSOR_DEVICE_ATTR_2(temp2_auto_point1_temp, S_IRUGO | S_IWUSR,
908 show_temp, set_temp, AUTOMIN, 1);
909 static SENSOR_DEVICE_ATTR_2(temp2_auto_point2_temp, S_IRUGO | S_IWUSR,
910 show_point2, set_point2, 0, 1);
911 static SENSOR_DEVICE_ATTR_2(temp2_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
913 static SENSOR_DEVICE_ATTR_2(temp2_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
914 set_temp, HYSTERSIS, 1);
915 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, INPUT, 2);
916 static SENSOR_DEVICE_ATTR_2(temp3_alarm, S_IRUGO, show_temp, NULL, ALARM, 2);
917 static SENSOR_DEVICE_ATTR_2(temp3_fault, S_IRUGO, show_temp, NULL, FAULT, 2);
918 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
920 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
922 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
923 set_temp, OFFSET, 2);
924 static SENSOR_DEVICE_ATTR_2(temp3_auto_point1_temp, S_IRUGO | S_IWUSR,
925 show_temp, set_temp, AUTOMIN, 2);
926 static SENSOR_DEVICE_ATTR_2(temp3_auto_point2_temp, S_IRUGO | S_IWUSR,
927 show_point2, set_point2, 0, 2);
928 static SENSOR_DEVICE_ATTR_2(temp3_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
930 static SENSOR_DEVICE_ATTR_2(temp3_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
931 set_temp, HYSTERSIS, 2);
932 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_tach, NULL, INPUT, 0);
933 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
935 static SENSOR_DEVICE_ATTR_2(fan1_alarm, S_IRUGO, show_tach, NULL, ALARM, 0);
936 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_tach, NULL, INPUT, 1);
937 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
939 static SENSOR_DEVICE_ATTR_2(fan2_alarm, S_IRUGO, show_tach, NULL, ALARM, 1);
940 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_tach, NULL, INPUT, 2);
941 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
943 static SENSOR_DEVICE_ATTR_2(fan3_alarm, S_IRUGO, show_tach, NULL, ALARM, 2);
944 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_tach, NULL, INPUT, 3);
945 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
947 static SENSOR_DEVICE_ATTR_2(fan4_alarm, S_IRUGO, show_tach, NULL, ALARM, 3);
948 static SENSOR_DEVICE_ATTR_2(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
950 static SENSOR_DEVICE_ATTR_2(pwm1_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
951 set_pwmfreq, INPUT, 0);
952 static SENSOR_DEVICE_ATTR_2(pwm1_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
953 set_pwmctrl, INPUT, 0);
954 static SENSOR_DEVICE_ATTR_2(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
955 show_pwmchan, set_pwmchan, INPUT, 0);
956 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
958 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
960 static SENSOR_DEVICE_ATTR_2(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
962 static SENSOR_DEVICE_ATTR_2(pwm2_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
963 set_pwmfreq, INPUT, 1);
964 static SENSOR_DEVICE_ATTR_2(pwm2_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
965 set_pwmctrl, INPUT, 1);
966 static SENSOR_DEVICE_ATTR_2(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
967 show_pwmchan, set_pwmchan, INPUT, 1);
968 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
970 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
972 static SENSOR_DEVICE_ATTR_2(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
974 static SENSOR_DEVICE_ATTR_2(pwm3_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
975 set_pwmfreq, INPUT, 2);
976 static SENSOR_DEVICE_ATTR_2(pwm3_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
977 set_pwmctrl, INPUT, 2);
978 static SENSOR_DEVICE_ATTR_2(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
979 show_pwmchan, set_pwmchan, INPUT, 2);
980 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
982 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
985 /* Non-standard name, might need revisiting */
986 static DEVICE_ATTR(pwm_use_point2_pwm_at_crit, S_IWUSR | S_IRUGO,
987 show_pwm_at_crit, set_pwm_at_crit);
989 static struct attribute *adt7475_attrs[] = {
990 &sensor_dev_attr_in1_input.dev_attr.attr,
991 &sensor_dev_attr_in1_max.dev_attr.attr,
992 &sensor_dev_attr_in1_min.dev_attr.attr,
993 &sensor_dev_attr_in1_alarm.dev_attr.attr,
994 &sensor_dev_attr_in2_input.dev_attr.attr,
995 &sensor_dev_attr_in2_max.dev_attr.attr,
996 &sensor_dev_attr_in2_min.dev_attr.attr,
997 &sensor_dev_attr_in2_alarm.dev_attr.attr,
998 &sensor_dev_attr_temp1_input.dev_attr.attr,
999 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1000 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1001 &sensor_dev_attr_temp1_max.dev_attr.attr,
1002 &sensor_dev_attr_temp1_min.dev_attr.attr,
1003 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1004 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1005 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1006 &sensor_dev_attr_temp1_crit.dev_attr.attr,
1007 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
1008 &sensor_dev_attr_temp2_input.dev_attr.attr,
1009 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1010 &sensor_dev_attr_temp2_max.dev_attr.attr,
1011 &sensor_dev_attr_temp2_min.dev_attr.attr,
1012 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1013 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1014 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1015 &sensor_dev_attr_temp2_crit.dev_attr.attr,
1016 &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
1017 &sensor_dev_attr_temp3_input.dev_attr.attr,
1018 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1019 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1020 &sensor_dev_attr_temp3_max.dev_attr.attr,
1021 &sensor_dev_attr_temp3_min.dev_attr.attr,
1022 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1023 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1024 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1025 &sensor_dev_attr_temp3_crit.dev_attr.attr,
1026 &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
1027 &sensor_dev_attr_fan1_input.dev_attr.attr,
1028 &sensor_dev_attr_fan1_min.dev_attr.attr,
1029 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1030 &sensor_dev_attr_fan2_input.dev_attr.attr,
1031 &sensor_dev_attr_fan2_min.dev_attr.attr,
1032 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1033 &sensor_dev_attr_fan3_input.dev_attr.attr,
1034 &sensor_dev_attr_fan3_min.dev_attr.attr,
1035 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1036 &sensor_dev_attr_pwm1.dev_attr.attr,
1037 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1038 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1039 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1040 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1041 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1042 &sensor_dev_attr_pwm3.dev_attr.attr,
1043 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1044 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1045 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1046 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1047 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1048 &dev_attr_pwm_use_point2_pwm_at_crit.attr,
1052 static struct attribute *fan4_attrs[] = {
1053 &sensor_dev_attr_fan4_input.dev_attr.attr,
1054 &sensor_dev_attr_fan4_min.dev_attr.attr,
1055 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1059 static struct attribute *pwm2_attrs[] = {
1060 &sensor_dev_attr_pwm2.dev_attr.attr,
1061 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1062 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1063 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1064 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1065 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1069 /* Attributes specific to the ADT7490 */
1070 static struct attribute *in0_attrs[] = {
1071 &sensor_dev_attr_in0_input.dev_attr.attr,
1072 &sensor_dev_attr_in0_max.dev_attr.attr,
1073 &sensor_dev_attr_in0_min.dev_attr.attr,
1074 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1078 static struct attribute *adt7490_attrs[] = {
1079 &sensor_dev_attr_in3_input.dev_attr.attr,
1080 &sensor_dev_attr_in3_max.dev_attr.attr,
1081 &sensor_dev_attr_in3_min.dev_attr.attr,
1082 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1083 &sensor_dev_attr_in4_input.dev_attr.attr,
1084 &sensor_dev_attr_in4_max.dev_attr.attr,
1085 &sensor_dev_attr_in4_min.dev_attr.attr,
1086 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1087 &sensor_dev_attr_in5_input.dev_attr.attr,
1088 &sensor_dev_attr_in5_max.dev_attr.attr,
1089 &sensor_dev_attr_in5_min.dev_attr.attr,
1090 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1094 static struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
1095 static struct attribute_group fan4_attr_group = { .attrs = fan4_attrs };
1096 static struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs };
1097 static struct attribute_group in0_attr_group = { .attrs = in0_attrs };
1098 static struct attribute_group adt7490_attr_group = { .attrs = adt7490_attrs };
1100 static int adt7475_detect(struct i2c_client *client, int kind,
1101 struct i2c_board_info *info)
1103 struct i2c_adapter *adapter = client->adapter;
1104 int vendid, devid, devid2;
1107 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1110 vendid = adt7475_read(REG_VENDID);
1111 devid2 = adt7475_read(REG_DEVID2);
1112 if (vendid != 0x41 || /* Analog Devices */
1113 (devid2 & 0xf8) != 0x68)
1116 devid = adt7475_read(REG_DEVID);
1119 else if (devid == 0x75 && client->addr == 0x2e)
1121 else if ((devid2 & 0xfc) == 0x6c)
1124 dev_dbg(&adapter->dev,
1125 "Couldn't detect an ADT7473/75/90 part at "
1126 "0x%02x\n", (unsigned int)client->addr);
1130 strlcpy(info->type, name, I2C_NAME_SIZE);
1135 static void adt7475_remove_files(struct i2c_client *client,
1136 struct adt7475_data *data)
1138 sysfs_remove_group(&client->dev.kobj, &adt7475_attr_group);
1139 if (data->has_voltage & 0x39)
1140 sysfs_remove_group(&client->dev.kobj, &adt7490_attr_group);
1142 sysfs_remove_group(&client->dev.kobj, &fan4_attr_group);
1144 sysfs_remove_group(&client->dev.kobj, &pwm2_attr_group);
1145 if (data->has_voltage & (1 << 0))
1146 sysfs_remove_group(&client->dev.kobj, &in0_attr_group);
1149 static int adt7475_probe(struct i2c_client *client,
1150 const struct i2c_device_id *id)
1152 struct adt7475_data *data;
1153 int i, ret = 0, revision;
1156 data = kzalloc(sizeof(*data), GFP_KERNEL);
1160 mutex_init(&data->lock);
1161 i2c_set_clientdata(client, data);
1163 /* Initialize device-specific values */
1164 switch (id->driver_data) {
1166 data->has_voltage = 0x3e; /* in1 to in5 */
1167 revision = adt7475_read(REG_DEVID2) & 0x03;
1170 data->has_voltage = 0x06; /* in1, in2 */
1171 revision = adt7475_read(REG_DEVID2) & 0x07;
1174 config3 = adt7475_read(REG_CONFIG3);
1175 /* Pin PWM2 may alternatively be used for ALERT output */
1176 if (!(config3 & CONFIG3_SMBALERT))
1178 /* Meaning of this bit is inverted for the ADT7473-1 */
1179 if (id->driver_data == adt7473 && revision >= 1)
1180 data->has_pwm2 = !data->has_pwm2;
1182 data->config4 = adt7475_read(REG_CONFIG4);
1183 /* Pin TACH4 may alternatively be used for THERM */
1184 if ((data->config4 & CONFIG4_PINFUNC) == 0x0)
1187 /* THERM configuration is more complex on the ADT7490, because 2
1188 different pins (TACH4 and +2.5 Vin) can be used for this function */
1189 if (id->driver_data == adt7490) {
1190 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 &&
1191 !(config3 & CONFIG3_THERM))
1193 if (!(config3 & CONFIG3_THERM) ||
1194 (data->config4 & CONFIG4_PINFUNC) == 0x1)
1195 data->has_voltage |= (1 << 0); /* in0 */
1198 /* Call adt7475_read_pwm for all pwm's as this will reprogram any
1199 pwm's which are disabled to manual mode with 0% duty cycle */
1200 for (i = 0; i < ADT7475_PWM_COUNT; i++)
1201 adt7475_read_pwm(client, i);
1203 ret = sysfs_create_group(&client->dev.kobj, &adt7475_attr_group);
1207 if (id->driver_data == adt7490) {
1208 ret = sysfs_create_group(&client->dev.kobj,
1209 &adt7490_attr_group);
1214 /* Features that can be disabled individually */
1215 if (data->has_fan4) {
1216 ret = sysfs_create_group(&client->dev.kobj, &fan4_attr_group);
1220 if (data->has_pwm2) {
1221 ret = sysfs_create_group(&client->dev.kobj, &pwm2_attr_group);
1225 if (data->has_voltage & (1 << 0)) {
1226 ret = sysfs_create_group(&client->dev.kobj, &in0_attr_group);
1231 data->hwmon_dev = hwmon_device_register(&client->dev);
1232 if (IS_ERR(data->hwmon_dev)) {
1233 ret = PTR_ERR(data->hwmon_dev);
1240 adt7475_remove_files(client, data);
1246 static int adt7475_remove(struct i2c_client *client)
1248 struct adt7475_data *data = i2c_get_clientdata(client);
1250 hwmon_device_unregister(data->hwmon_dev);
1251 adt7475_remove_files(client, data);
1257 static struct i2c_driver adt7475_driver = {
1258 .class = I2C_CLASS_HWMON,
1262 .probe = adt7475_probe,
1263 .remove = adt7475_remove,
1264 .id_table = adt7475_id,
1265 .detect = adt7475_detect,
1266 .address_data = &addr_data,
1269 static void adt7475_read_hystersis(struct i2c_client *client)
1271 struct adt7475_data *data = i2c_get_clientdata(client);
1273 data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
1274 data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0];
1275 data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);
1278 static void adt7475_read_pwm(struct i2c_client *client, int index)
1280 struct adt7475_data *data = i2c_get_clientdata(client);
1283 data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index));
1285 /* Figure out the internal value for pwmctrl and pwmchan
1286 based on the current settings */
1287 v = (data->pwm[CONTROL][index] >> 5) & 7;
1290 data->pwmctl[index] = 0;
1292 data->pwmctl[index] = 1;
1294 /* The fan is disabled - we don't want to
1295 support that, so change to manual mode and
1296 set the duty cycle to 0 instead
1298 data->pwm[INPUT][index] = 0;
1299 data->pwm[CONTROL][index] &= ~0xE0;
1300 data->pwm[CONTROL][index] |= (7 << 5);
1302 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1303 data->pwm[INPUT][index]);
1305 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1306 data->pwm[CONTROL][index]);
1308 data->pwmctl[index] = 1;
1310 data->pwmctl[index] = 2;
1314 data->pwmchan[index] = 1;
1317 data->pwmchan[index] = 2;
1320 data->pwmchan[index] = 4;
1323 data->pwmchan[index] = 6;
1326 data->pwmchan[index] = 7;
1332 static struct adt7475_data *adt7475_update_device(struct device *dev)
1334 struct i2c_client *client = to_i2c_client(dev);
1335 struct adt7475_data *data = i2c_get_clientdata(client);
1339 mutex_lock(&data->lock);
1341 /* Measurement values update every 2 seconds */
1342 if (time_after(jiffies, data->measure_updated + HZ * 2) ||
1344 data->alarms = adt7475_read(REG_STATUS2) << 8;
1345 data->alarms |= adt7475_read(REG_STATUS1);
1347 ext = (adt7475_read(REG_EXTEND2) << 8) |
1348 adt7475_read(REG_EXTEND1);
1349 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1350 if (!(data->has_voltage & (1 << i)))
1352 data->voltage[INPUT][i] =
1353 (adt7475_read(VOLTAGE_REG(i)) << 2) |
1354 ((ext >> (i * 2)) & 3);
1357 for (i = 0; i < ADT7475_TEMP_COUNT; i++)
1358 data->temp[INPUT][i] =
1359 (adt7475_read(TEMP_REG(i)) << 2) |
1360 ((ext >> ((i + 5) * 2)) & 3);
1362 if (data->has_voltage & (1 << 5)) {
1363 data->alarms |= adt7475_read(REG_STATUS4) << 24;
1364 ext = adt7475_read(REG_EXTEND3);
1365 data->voltage[INPUT][5] = adt7475_read(REG_VTT) << 2 |
1369 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1370 if (i == 3 && !data->has_fan4)
1372 data->tach[INPUT][i] =
1373 adt7475_read_word(client, TACH_REG(i));
1376 /* Updated by hw when in auto mode */
1377 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1378 if (i == 1 && !data->has_pwm2)
1380 data->pwm[INPUT][i] = adt7475_read(PWM_REG(i));
1383 data->measure_updated = jiffies;
1386 /* Limits and settings, should never change update every 60 seconds */
1387 if (time_after(jiffies, data->limits_updated + HZ * 60) ||
1389 data->config4 = adt7475_read(REG_CONFIG4);
1390 data->config5 = adt7475_read(REG_CONFIG5);
1392 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1393 if (!(data->has_voltage & (1 << i)))
1395 /* Adjust values so they match the input precision */
1396 data->voltage[MIN][i] =
1397 adt7475_read(VOLTAGE_MIN_REG(i)) << 2;
1398 data->voltage[MAX][i] =
1399 adt7475_read(VOLTAGE_MAX_REG(i)) << 2;
1402 if (data->has_voltage & (1 << 5)) {
1403 data->voltage[MIN][5] = adt7475_read(REG_VTT_MIN) << 2;
1404 data->voltage[MAX][5] = adt7475_read(REG_VTT_MAX) << 2;
1407 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1408 /* Adjust values so they match the input precision */
1409 data->temp[MIN][i] =
1410 adt7475_read(TEMP_MIN_REG(i)) << 2;
1411 data->temp[MAX][i] =
1412 adt7475_read(TEMP_MAX_REG(i)) << 2;
1413 data->temp[AUTOMIN][i] =
1414 adt7475_read(TEMP_TMIN_REG(i)) << 2;
1415 data->temp[THERM][i] =
1416 adt7475_read(TEMP_THERM_REG(i)) << 2;
1417 data->temp[OFFSET][i] =
1418 adt7475_read(TEMP_OFFSET_REG(i));
1420 adt7475_read_hystersis(client);
1422 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1423 if (i == 3 && !data->has_fan4)
1425 data->tach[MIN][i] =
1426 adt7475_read_word(client, TACH_MIN_REG(i));
1429 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1430 if (i == 1 && !data->has_pwm2)
1432 data->pwm[MAX][i] = adt7475_read(PWM_MAX_REG(i));
1433 data->pwm[MIN][i] = adt7475_read(PWM_MIN_REG(i));
1434 /* Set the channel and control information */
1435 adt7475_read_pwm(client, i);
1438 data->range[0] = adt7475_read(TEMP_TRANGE_REG(0));
1439 data->range[1] = adt7475_read(TEMP_TRANGE_REG(1));
1440 data->range[2] = adt7475_read(TEMP_TRANGE_REG(2));
1442 data->limits_updated = jiffies;
1446 mutex_unlock(&data->lock);
1451 static int __init sensors_adt7475_init(void)
1453 return i2c_add_driver(&adt7475_driver);
1456 static void __exit sensors_adt7475_exit(void)
1458 i2c_del_driver(&adt7475_driver);
1461 MODULE_AUTHOR("Advanced Micro Devices, Inc");
1462 MODULE_DESCRIPTION("adt7475 driver");
1463 MODULE_LICENSE("GPL");
1465 module_init(sensors_adt7475_init);
1466 module_exit(sensors_adt7475_exit);