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_DEVREV2 0x12 /* ADT7490 only */
45 #define REG_VTT 0x1E /* ADT7490 only */
46 #define REG_EXTEND3 0x1F /* ADT7490 only */
48 #define REG_VOLTAGE_BASE 0x20
49 #define REG_TEMP_BASE 0x25
50 #define REG_TACH_BASE 0x28
51 #define REG_PWM_BASE 0x30
52 #define REG_PWM_MAX_BASE 0x38
54 #define REG_DEVID 0x3D
55 #define REG_VENDID 0x3E
56 #define REG_DEVID2 0x3F
58 #define REG_STATUS1 0x41
59 #define REG_STATUS2 0x42
61 #define REG_VOLTAGE_MIN_BASE 0x44
62 #define REG_VOLTAGE_MAX_BASE 0x45
64 #define REG_TEMP_MIN_BASE 0x4E
65 #define REG_TEMP_MAX_BASE 0x4F
67 #define REG_TACH_MIN_BASE 0x54
69 #define REG_PWM_CONFIG_BASE 0x5C
71 #define REG_TEMP_TRANGE_BASE 0x5F
73 #define REG_PWM_MIN_BASE 0x64
75 #define REG_TEMP_TMIN_BASE 0x67
76 #define REG_TEMP_THERM_BASE 0x6A
78 #define REG_REMOTE1_HYSTERSIS 0x6D
79 #define REG_REMOTE2_HYSTERSIS 0x6E
81 #define REG_TEMP_OFFSET_BASE 0x70
83 #define REG_EXTEND1 0x76
84 #define REG_EXTEND2 0x77
86 #define REG_CONFIG3 0x78
87 #define REG_CONFIG5 0x7C
88 #define REG_CONFIG4 0x7D
90 #define REG_STATUS4 0x81 /* ADT7490 only */
92 #define REG_VTT_MIN 0x84 /* ADT7490 only */
93 #define REG_VTT_MAX 0x86 /* ADT7490 only */
95 #define CONFIG3_SMBALERT 0x01
96 #define CONFIG3_THERM 0x02
98 #define CONFIG4_PINFUNC 0x03
99 #define CONFIG4_MAXDUTY 0x08
101 #define CONFIG5_TWOSCOMP 0x01
102 #define CONFIG5_TEMPOFFSET 0x02
104 /* ADT7475 Settings */
106 #define ADT7475_VOLTAGE_COUNT 5 /* Not counting Vtt */
107 #define ADT7475_TEMP_COUNT 3
108 #define ADT7475_TACH_COUNT 4
109 #define ADT7475_PWM_COUNT 3
111 /* Macro to read the registers */
113 #define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg))
115 /* Macros to easily index the registers */
117 #define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2))
118 #define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2))
120 #define PWM_REG(idx) (REG_PWM_BASE + (idx))
121 #define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx))
122 #define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx))
123 #define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx))
125 #define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx))
126 #define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2))
127 #define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2))
129 #define TEMP_REG(idx) (REG_TEMP_BASE + (idx))
130 #define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2))
131 #define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2))
132 #define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx))
133 #define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx))
134 #define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx))
135 #define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx))
137 static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
139 I2C_CLIENT_INSMOD_3(adt7473, adt7475, adt7490);
141 static const struct i2c_device_id adt7475_id[] = {
142 { "adt7473", adt7473 },
143 { "adt7475", adt7475 },
144 { "adt7490", adt7490 },
147 MODULE_DEVICE_TABLE(i2c, adt7475_id);
149 struct adt7475_data {
150 struct device *hwmon_dev;
153 unsigned long measure_updated;
154 unsigned long limits_updated;
172 static struct i2c_driver adt7475_driver;
173 static struct adt7475_data *adt7475_update_device(struct device *dev);
174 static void adt7475_read_hystersis(struct i2c_client *client);
175 static void adt7475_read_pwm(struct i2c_client *client, int index);
177 /* Given a temp value, convert it to register value */
179 static inline u16 temp2reg(struct adt7475_data *data, long val)
183 if (!(data->config5 & CONFIG5_TWOSCOMP)) {
184 val = SENSORS_LIMIT(val, -64000, 191000);
185 ret = (val + 64500) / 1000;
187 val = SENSORS_LIMIT(val, -128000, 127000);
189 ret = (256500 + val) / 1000;
191 ret = (val + 500) / 1000;
197 /* Given a register value, convert it to a real temp value */
199 static inline int reg2temp(struct adt7475_data *data, u16 reg)
201 if (data->config5 & CONFIG5_TWOSCOMP) {
203 return (reg - 1024) * 250;
207 return (reg - 256) * 250;
210 static inline int tach2rpm(u16 tach)
212 if (tach == 0 || tach == 0xFFFF)
215 return (90000 * 60) / tach;
218 static inline u16 rpm2tach(unsigned long rpm)
223 return SENSORS_LIMIT((90000 * 60) / rpm, 1, 0xFFFF);
226 /* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */
227 static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 1][2] = {
228 { 45, 94 }, /* +2.5V */
229 { 175, 525 }, /* Vccp */
230 { 68, 71 }, /* Vcc */
231 { 93, 47 }, /* +5V */
232 { 120, 20 }, /* +12V */
233 { 45, 45 }, /* Vtt */
236 static inline int reg2volt(int channel, u16 reg)
238 const int *r = adt7473_in_scaling[channel];
240 return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024);
243 static inline u16 volt2reg(int channel, long volt)
245 const int *r = adt7473_in_scaling[channel];
248 reg = (volt * r[1] * 1024) / ((r[0] + r[1]) * 2250);
249 return SENSORS_LIMIT(reg, 0, 1023) & (0xff << 2);
252 static u16 adt7475_read_word(struct i2c_client *client, int reg)
256 val = i2c_smbus_read_byte_data(client, reg);
257 val |= (i2c_smbus_read_byte_data(client, reg + 1) << 8);
262 static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)
264 i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
265 i2c_smbus_write_byte_data(client, reg, val & 0xFF);
268 /* Find the nearest value in a table - used for pwm frequency and
270 static int find_nearest(long val, const int *array, int size)
277 if (val > array[size - 1])
280 for (i = 0; i < size - 1; i++) {
283 if (val > array[i + 1])
287 b = array[i + 1] - val;
289 return (a <= b) ? i : i + 1;
295 static ssize_t show_voltage(struct device *dev, struct device_attribute *attr,
298 struct adt7475_data *data = adt7475_update_device(dev);
299 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
304 return sprintf(buf, "%d\n",
305 (data->alarms >> sattr->index) & 1);
307 val = data->voltage[sattr->nr][sattr->index];
308 return sprintf(buf, "%d\n", reg2volt(sattr->index, val));
312 static ssize_t set_voltage(struct device *dev, struct device_attribute *attr,
313 const char *buf, size_t count)
316 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
317 struct i2c_client *client = to_i2c_client(dev);
318 struct adt7475_data *data = i2c_get_clientdata(client);
322 if (strict_strtol(buf, 10, &val))
325 mutex_lock(&data->lock);
327 data->voltage[sattr->nr][sattr->index] = volt2reg(sattr->index, val);
329 if (sattr->index < ADT7475_VOLTAGE_COUNT) {
330 if (sattr->nr == MIN)
331 reg = VOLTAGE_MIN_REG(sattr->index);
333 reg = VOLTAGE_MAX_REG(sattr->index);
335 if (sattr->nr == MIN)
341 i2c_smbus_write_byte_data(client, reg,
342 data->voltage[sattr->nr][sattr->index] >> 2);
343 mutex_unlock(&data->lock);
348 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
351 struct adt7475_data *data = adt7475_update_device(dev);
352 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
357 mutex_lock(&data->lock);
358 out = data->temp[sattr->nr][sattr->index];
359 if (sattr->index != 1)
360 out = (out >> 4) & 0xF;
363 /* Show the value as an absolute number tied to
365 out = reg2temp(data, data->temp[THERM][sattr->index]) -
367 mutex_unlock(&data->lock);
371 /* Offset is always 2's complement, regardless of the
372 * setting in CONFIG5 */
373 mutex_lock(&data->lock);
374 out = (s8)data->temp[sattr->nr][sattr->index];
375 if (data->config5 & CONFIG5_TEMPOFFSET)
379 mutex_unlock(&data->lock);
383 out = (data->alarms >> (sattr->index + 4)) & 1;
387 /* Note - only for remote1 and remote2 */
388 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000));
392 /* All other temp values are in the configured format */
393 out = reg2temp(data, data->temp[sattr->nr][sattr->index]);
396 return sprintf(buf, "%d\n", out);
399 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
400 const char *buf, size_t count)
402 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
403 struct i2c_client *client = to_i2c_client(dev);
404 struct adt7475_data *data = i2c_get_clientdata(client);
405 unsigned char reg = 0;
410 if (strict_strtol(buf, 10, &val))
413 mutex_lock(&data->lock);
415 /* We need the config register in all cases for temp <-> reg conv. */
416 data->config5 = adt7475_read(REG_CONFIG5);
420 if (data->config5 & CONFIG5_TEMPOFFSET) {
421 val = SENSORS_LIMIT(val, -63000, 127000);
422 out = data->temp[OFFSET][sattr->index] = val / 1000;
424 val = SENSORS_LIMIT(val, -63000, 64000);
425 out = data->temp[OFFSET][sattr->index] = val / 500;
430 /* The value will be given as an absolute value, turn it
431 into an offset based on THERM */
433 /* Read fresh THERM and HYSTERSIS values from the chip */
434 data->temp[THERM][sattr->index] =
435 adt7475_read(TEMP_THERM_REG(sattr->index)) << 2;
436 adt7475_read_hystersis(client);
438 temp = reg2temp(data, data->temp[THERM][sattr->index]);
439 val = SENSORS_LIMIT(val, temp - 15000, temp);
440 val = (temp - val) / 1000;
442 if (sattr->index != 1) {
443 data->temp[HYSTERSIS][sattr->index] &= 0xF0;
444 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4;
446 data->temp[HYSTERSIS][sattr->index] &= 0x0F;
447 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF);
450 out = data->temp[HYSTERSIS][sattr->index];
454 data->temp[sattr->nr][sattr->index] = temp2reg(data, val);
456 /* We maintain an extra 2 digits of precision for simplicity
457 * - shift those back off before writing the value */
458 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2);
463 reg = TEMP_MIN_REG(sattr->index);
466 reg = TEMP_MAX_REG(sattr->index);
469 reg = TEMP_OFFSET_REG(sattr->index);
472 reg = TEMP_TMIN_REG(sattr->index);
475 reg = TEMP_THERM_REG(sattr->index);
478 if (sattr->index != 2)
479 reg = REG_REMOTE1_HYSTERSIS;
481 reg = REG_REMOTE2_HYSTERSIS;
486 i2c_smbus_write_byte_data(client, reg, out);
488 mutex_unlock(&data->lock);
492 /* Table of autorange values - the user will write the value in millidegrees,
493 and we'll convert it */
494 static const int autorange_table[] = {
495 2000, 2500, 3330, 4000, 5000, 6670, 8000,
496 10000, 13330, 16000, 20000, 26670, 32000, 40000,
500 static ssize_t show_point2(struct device *dev, struct device_attribute *attr,
503 struct adt7475_data *data = adt7475_update_device(dev);
504 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
507 mutex_lock(&data->lock);
508 out = (data->range[sattr->index] >> 4) & 0x0F;
509 val = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
510 mutex_unlock(&data->lock);
512 return sprintf(buf, "%d\n", val + autorange_table[out]);
515 static ssize_t set_point2(struct device *dev, struct device_attribute *attr,
516 const char *buf, size_t count)
518 struct i2c_client *client = to_i2c_client(dev);
519 struct adt7475_data *data = i2c_get_clientdata(client);
520 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
524 if (strict_strtol(buf, 10, &val))
527 mutex_lock(&data->lock);
529 /* Get a fresh copy of the needed registers */
530 data->config5 = adt7475_read(REG_CONFIG5);
531 data->temp[AUTOMIN][sattr->index] =
532 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2;
533 data->range[sattr->index] =
534 adt7475_read(TEMP_TRANGE_REG(sattr->index));
536 /* The user will write an absolute value, so subtract the start point
537 to figure the range */
538 temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
539 val = SENSORS_LIMIT(val, temp + autorange_table[0],
540 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]);
543 /* Find the nearest table entry to what the user wrote */
544 val = find_nearest(val, autorange_table, ARRAY_SIZE(autorange_table));
546 data->range[sattr->index] &= ~0xF0;
547 data->range[sattr->index] |= val << 4;
549 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
550 data->range[sattr->index]);
552 mutex_unlock(&data->lock);
556 static ssize_t show_tach(struct device *dev, struct device_attribute *attr,
559 struct adt7475_data *data = adt7475_update_device(dev);
560 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
563 if (sattr->nr == ALARM)
564 out = (data->alarms >> (sattr->index + 10)) & 1;
566 out = tach2rpm(data->tach[sattr->nr][sattr->index]);
568 return sprintf(buf, "%d\n", out);
571 static ssize_t set_tach(struct device *dev, struct device_attribute *attr,
572 const char *buf, size_t count)
575 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
576 struct i2c_client *client = to_i2c_client(dev);
577 struct adt7475_data *data = i2c_get_clientdata(client);
580 if (strict_strtoul(buf, 10, &val))
583 mutex_lock(&data->lock);
585 data->tach[MIN][sattr->index] = rpm2tach(val);
587 adt7475_write_word(client, TACH_MIN_REG(sattr->index),
588 data->tach[MIN][sattr->index]);
590 mutex_unlock(&data->lock);
594 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
597 struct adt7475_data *data = adt7475_update_device(dev);
598 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
600 return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);
603 static ssize_t show_pwmchan(struct device *dev, struct device_attribute *attr,
606 struct adt7475_data *data = adt7475_update_device(dev);
607 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
609 return sprintf(buf, "%d\n", data->pwmchan[sattr->index]);
612 static ssize_t show_pwmctrl(struct device *dev, struct device_attribute *attr,
615 struct adt7475_data *data = adt7475_update_device(dev);
616 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
618 return sprintf(buf, "%d\n", data->pwmctl[sattr->index]);
621 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
622 const char *buf, size_t count)
625 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
626 struct i2c_client *client = to_i2c_client(dev);
627 struct adt7475_data *data = i2c_get_clientdata(client);
628 unsigned char reg = 0;
631 if (strict_strtol(buf, 10, &val))
634 mutex_lock(&data->lock);
638 /* Get a fresh value for CONTROL */
639 data->pwm[CONTROL][sattr->index] =
640 adt7475_read(PWM_CONFIG_REG(sattr->index));
642 /* If we are not in manual mode, then we shouldn't allow
643 * the user to set the pwm speed */
644 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) {
645 mutex_unlock(&data->lock);
649 reg = PWM_REG(sattr->index);
653 reg = PWM_MIN_REG(sattr->index);
657 reg = PWM_MAX_REG(sattr->index);
661 data->pwm[sattr->nr][sattr->index] = SENSORS_LIMIT(val, 0, 0xFF);
662 i2c_smbus_write_byte_data(client, reg,
663 data->pwm[sattr->nr][sattr->index]);
665 mutex_unlock(&data->lock);
670 /* Called by set_pwmctrl and set_pwmchan */
672 static int hw_set_pwm(struct i2c_client *client, int index,
673 unsigned int pwmctl, unsigned int pwmchan)
675 struct adt7475_data *data = i2c_get_clientdata(client);
680 val = 0x03; /* Run at full speed */
683 val = 0x07; /* Manual mode */
688 /* Remote1 controls PWM */
692 /* local controls PWM */
696 /* remote2 controls PWM */
700 /* local/remote2 control PWM */
704 /* All three control PWM */
715 data->pwmctl[index] = pwmctl;
716 data->pwmchan[index] = pwmchan;
718 data->pwm[CONTROL][index] &= ~0xE0;
719 data->pwm[CONTROL][index] |= (val & 7) << 5;
721 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
722 data->pwm[CONTROL][index]);
727 static ssize_t set_pwmchan(struct device *dev, struct device_attribute *attr,
728 const char *buf, size_t count)
730 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
731 struct i2c_client *client = to_i2c_client(dev);
732 struct adt7475_data *data = i2c_get_clientdata(client);
736 if (strict_strtol(buf, 10, &val))
739 mutex_lock(&data->lock);
740 /* Read Modify Write PWM values */
741 adt7475_read_pwm(client, sattr->index);
742 r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val);
745 mutex_unlock(&data->lock);
750 static ssize_t set_pwmctrl(struct device *dev, struct device_attribute *attr,
751 const char *buf, size_t count)
753 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
754 struct i2c_client *client = to_i2c_client(dev);
755 struct adt7475_data *data = i2c_get_clientdata(client);
759 if (strict_strtol(buf, 10, &val))
762 mutex_lock(&data->lock);
763 /* Read Modify Write PWM values */
764 adt7475_read_pwm(client, sattr->index);
765 r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]);
768 mutex_unlock(&data->lock);
773 /* List of frequencies for the PWM */
774 static const int pwmfreq_table[] = {
775 11, 14, 22, 29, 35, 44, 58, 88
778 static ssize_t show_pwmfreq(struct device *dev, struct device_attribute *attr,
781 struct adt7475_data *data = adt7475_update_device(dev);
782 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
784 return sprintf(buf, "%d\n",
785 pwmfreq_table[data->range[sattr->index] & 7]);
788 static ssize_t set_pwmfreq(struct device *dev, struct device_attribute *attr,
789 const char *buf, size_t count)
791 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
792 struct i2c_client *client = to_i2c_client(dev);
793 struct adt7475_data *data = i2c_get_clientdata(client);
797 if (strict_strtol(buf, 10, &val))
800 out = find_nearest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));
802 mutex_lock(&data->lock);
804 data->range[sattr->index] =
805 adt7475_read(TEMP_TRANGE_REG(sattr->index));
806 data->range[sattr->index] &= ~7;
807 data->range[sattr->index] |= out;
809 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
810 data->range[sattr->index]);
812 mutex_unlock(&data->lock);
816 static ssize_t show_pwm_at_crit(struct device *dev,
817 struct device_attribute *devattr, char *buf)
819 struct adt7475_data *data = adt7475_update_device(dev);
820 return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));
823 static ssize_t set_pwm_at_crit(struct device *dev,
824 struct device_attribute *devattr,
825 const char *buf, size_t count)
827 struct i2c_client *client = to_i2c_client(dev);
828 struct adt7475_data *data = i2c_get_clientdata(client);
831 if (strict_strtol(buf, 10, &val))
833 if (val != 0 && val != 1)
836 mutex_lock(&data->lock);
837 data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);
839 data->config4 |= CONFIG4_MAXDUTY;
841 data->config4 &= ~CONFIG4_MAXDUTY;
842 i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);
843 mutex_unlock(&data->lock);
848 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_voltage, NULL, INPUT, 0);
849 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_voltage,
850 set_voltage, MAX, 0);
851 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_voltage,
852 set_voltage, MIN, 0);
853 static SENSOR_DEVICE_ATTR_2(in0_alarm, S_IRUGO, show_voltage, NULL, ALARM, 0);
854 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_voltage, NULL, INPUT, 1);
855 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_voltage,
856 set_voltage, MAX, 1);
857 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_voltage,
858 set_voltage, MIN, 1);
859 static SENSOR_DEVICE_ATTR_2(in1_alarm, S_IRUGO, show_voltage, NULL, ALARM, 1);
860 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_voltage, NULL, INPUT, 2);
861 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_voltage,
862 set_voltage, MAX, 2);
863 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_voltage,
864 set_voltage, MIN, 2);
865 static SENSOR_DEVICE_ATTR_2(in2_alarm, S_IRUGO, show_voltage, NULL, ALARM, 2);
866 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_voltage, NULL, INPUT, 3);
867 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_voltage,
868 set_voltage, MAX, 3);
869 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_voltage,
870 set_voltage, MIN, 3);
871 static SENSOR_DEVICE_ATTR_2(in3_alarm, S_IRUGO, show_voltage, NULL, ALARM, 3);
872 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_voltage, NULL, INPUT, 4);
873 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_voltage,
874 set_voltage, MAX, 4);
875 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_voltage,
876 set_voltage, MIN, 4);
877 static SENSOR_DEVICE_ATTR_2(in4_alarm, S_IRUGO, show_voltage, NULL, ALARM, 8);
878 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_voltage, NULL, INPUT, 5);
879 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_voltage,
880 set_voltage, MAX, 5);
881 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_voltage,
882 set_voltage, MIN, 5);
883 static SENSOR_DEVICE_ATTR_2(in5_alarm, S_IRUGO, show_voltage, NULL, ALARM, 31);
884 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, INPUT, 0);
885 static SENSOR_DEVICE_ATTR_2(temp1_alarm, S_IRUGO, show_temp, NULL, ALARM, 0);
886 static SENSOR_DEVICE_ATTR_2(temp1_fault, S_IRUGO, show_temp, NULL, FAULT, 0);
887 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
889 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
891 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
892 set_temp, OFFSET, 0);
893 static SENSOR_DEVICE_ATTR_2(temp1_auto_point1_temp, S_IRUGO | S_IWUSR,
894 show_temp, set_temp, AUTOMIN, 0);
895 static SENSOR_DEVICE_ATTR_2(temp1_auto_point2_temp, S_IRUGO | S_IWUSR,
896 show_point2, set_point2, 0, 0);
897 static SENSOR_DEVICE_ATTR_2(temp1_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
899 static SENSOR_DEVICE_ATTR_2(temp1_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
900 set_temp, HYSTERSIS, 0);
901 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, INPUT, 1);
902 static SENSOR_DEVICE_ATTR_2(temp2_alarm, S_IRUGO, show_temp, NULL, ALARM, 1);
903 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
905 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
907 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
908 set_temp, OFFSET, 1);
909 static SENSOR_DEVICE_ATTR_2(temp2_auto_point1_temp, S_IRUGO | S_IWUSR,
910 show_temp, set_temp, AUTOMIN, 1);
911 static SENSOR_DEVICE_ATTR_2(temp2_auto_point2_temp, S_IRUGO | S_IWUSR,
912 show_point2, set_point2, 0, 1);
913 static SENSOR_DEVICE_ATTR_2(temp2_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
915 static SENSOR_DEVICE_ATTR_2(temp2_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
916 set_temp, HYSTERSIS, 1);
917 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, INPUT, 2);
918 static SENSOR_DEVICE_ATTR_2(temp3_alarm, S_IRUGO, show_temp, NULL, ALARM, 2);
919 static SENSOR_DEVICE_ATTR_2(temp3_fault, S_IRUGO, show_temp, NULL, FAULT, 2);
920 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
922 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
924 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
925 set_temp, OFFSET, 2);
926 static SENSOR_DEVICE_ATTR_2(temp3_auto_point1_temp, S_IRUGO | S_IWUSR,
927 show_temp, set_temp, AUTOMIN, 2);
928 static SENSOR_DEVICE_ATTR_2(temp3_auto_point2_temp, S_IRUGO | S_IWUSR,
929 show_point2, set_point2, 0, 2);
930 static SENSOR_DEVICE_ATTR_2(temp3_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
932 static SENSOR_DEVICE_ATTR_2(temp3_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
933 set_temp, HYSTERSIS, 2);
934 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_tach, NULL, INPUT, 0);
935 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
937 static SENSOR_DEVICE_ATTR_2(fan1_alarm, S_IRUGO, show_tach, NULL, ALARM, 0);
938 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_tach, NULL, INPUT, 1);
939 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
941 static SENSOR_DEVICE_ATTR_2(fan2_alarm, S_IRUGO, show_tach, NULL, ALARM, 1);
942 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_tach, NULL, INPUT, 2);
943 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
945 static SENSOR_DEVICE_ATTR_2(fan3_alarm, S_IRUGO, show_tach, NULL, ALARM, 2);
946 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_tach, NULL, INPUT, 3);
947 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
949 static SENSOR_DEVICE_ATTR_2(fan4_alarm, S_IRUGO, show_tach, NULL, ALARM, 3);
950 static SENSOR_DEVICE_ATTR_2(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
952 static SENSOR_DEVICE_ATTR_2(pwm1_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
953 set_pwmfreq, INPUT, 0);
954 static SENSOR_DEVICE_ATTR_2(pwm1_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
955 set_pwmctrl, INPUT, 0);
956 static SENSOR_DEVICE_ATTR_2(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
957 show_pwmchan, set_pwmchan, INPUT, 0);
958 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
960 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
962 static SENSOR_DEVICE_ATTR_2(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
964 static SENSOR_DEVICE_ATTR_2(pwm2_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
965 set_pwmfreq, INPUT, 1);
966 static SENSOR_DEVICE_ATTR_2(pwm2_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
967 set_pwmctrl, INPUT, 1);
968 static SENSOR_DEVICE_ATTR_2(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
969 show_pwmchan, set_pwmchan, INPUT, 1);
970 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
972 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
974 static SENSOR_DEVICE_ATTR_2(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
976 static SENSOR_DEVICE_ATTR_2(pwm3_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
977 set_pwmfreq, INPUT, 2);
978 static SENSOR_DEVICE_ATTR_2(pwm3_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
979 set_pwmctrl, INPUT, 2);
980 static SENSOR_DEVICE_ATTR_2(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
981 show_pwmchan, set_pwmchan, INPUT, 2);
982 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
984 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
987 /* Non-standard name, might need revisiting */
988 static DEVICE_ATTR(pwm_use_point2_pwm_at_crit, S_IWUSR | S_IRUGO,
989 show_pwm_at_crit, set_pwm_at_crit);
991 static struct attribute *adt7475_attrs[] = {
992 &sensor_dev_attr_in1_input.dev_attr.attr,
993 &sensor_dev_attr_in1_max.dev_attr.attr,
994 &sensor_dev_attr_in1_min.dev_attr.attr,
995 &sensor_dev_attr_in1_alarm.dev_attr.attr,
996 &sensor_dev_attr_in2_input.dev_attr.attr,
997 &sensor_dev_attr_in2_max.dev_attr.attr,
998 &sensor_dev_attr_in2_min.dev_attr.attr,
999 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1000 &sensor_dev_attr_temp1_input.dev_attr.attr,
1001 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1002 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1003 &sensor_dev_attr_temp1_max.dev_attr.attr,
1004 &sensor_dev_attr_temp1_min.dev_attr.attr,
1005 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1006 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1007 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1008 &sensor_dev_attr_temp1_crit.dev_attr.attr,
1009 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
1010 &sensor_dev_attr_temp2_input.dev_attr.attr,
1011 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1012 &sensor_dev_attr_temp2_max.dev_attr.attr,
1013 &sensor_dev_attr_temp2_min.dev_attr.attr,
1014 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1015 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1016 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1017 &sensor_dev_attr_temp2_crit.dev_attr.attr,
1018 &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
1019 &sensor_dev_attr_temp3_input.dev_attr.attr,
1020 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1021 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1022 &sensor_dev_attr_temp3_max.dev_attr.attr,
1023 &sensor_dev_attr_temp3_min.dev_attr.attr,
1024 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1025 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1026 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1027 &sensor_dev_attr_temp3_crit.dev_attr.attr,
1028 &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
1029 &sensor_dev_attr_fan1_input.dev_attr.attr,
1030 &sensor_dev_attr_fan1_min.dev_attr.attr,
1031 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1032 &sensor_dev_attr_fan2_input.dev_attr.attr,
1033 &sensor_dev_attr_fan2_min.dev_attr.attr,
1034 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1035 &sensor_dev_attr_fan3_input.dev_attr.attr,
1036 &sensor_dev_attr_fan3_min.dev_attr.attr,
1037 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1038 &sensor_dev_attr_pwm1.dev_attr.attr,
1039 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1040 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1041 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1042 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1043 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1044 &sensor_dev_attr_pwm3.dev_attr.attr,
1045 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1046 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1047 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1048 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1049 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1050 &dev_attr_pwm_use_point2_pwm_at_crit.attr,
1054 static struct attribute *fan4_attrs[] = {
1055 &sensor_dev_attr_fan4_input.dev_attr.attr,
1056 &sensor_dev_attr_fan4_min.dev_attr.attr,
1057 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1061 static struct attribute *pwm2_attrs[] = {
1062 &sensor_dev_attr_pwm2.dev_attr.attr,
1063 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1064 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1065 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1066 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1067 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1071 /* Attributes specific to the ADT7490 */
1072 static struct attribute *in0_attrs[] = {
1073 &sensor_dev_attr_in0_input.dev_attr.attr,
1074 &sensor_dev_attr_in0_max.dev_attr.attr,
1075 &sensor_dev_attr_in0_min.dev_attr.attr,
1076 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1080 static struct attribute *adt7490_attrs[] = {
1081 &sensor_dev_attr_in3_input.dev_attr.attr,
1082 &sensor_dev_attr_in3_max.dev_attr.attr,
1083 &sensor_dev_attr_in3_min.dev_attr.attr,
1084 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1085 &sensor_dev_attr_in4_input.dev_attr.attr,
1086 &sensor_dev_attr_in4_max.dev_attr.attr,
1087 &sensor_dev_attr_in4_min.dev_attr.attr,
1088 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1089 &sensor_dev_attr_in5_input.dev_attr.attr,
1090 &sensor_dev_attr_in5_max.dev_attr.attr,
1091 &sensor_dev_attr_in5_min.dev_attr.attr,
1092 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1096 static struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
1097 static struct attribute_group fan4_attr_group = { .attrs = fan4_attrs };
1098 static struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs };
1099 static struct attribute_group in0_attr_group = { .attrs = in0_attrs };
1100 static struct attribute_group adt7490_attr_group = { .attrs = adt7490_attrs };
1102 static int adt7475_detect(struct i2c_client *client, int kind,
1103 struct i2c_board_info *info)
1105 struct i2c_adapter *adapter = client->adapter;
1106 int vendid, devid, devid2;
1109 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1112 vendid = adt7475_read(REG_VENDID);
1113 devid2 = adt7475_read(REG_DEVID2);
1114 if (vendid != 0x41 || /* Analog Devices */
1115 (devid2 & 0xf8) != 0x68)
1118 devid = adt7475_read(REG_DEVID);
1121 else if (devid == 0x75 && client->addr == 0x2e)
1123 else if ((devid2 & 0xfc) == 0x6c)
1126 dev_dbg(&adapter->dev,
1127 "Couldn't detect an ADT7473/75/90 part at "
1128 "0x%02x\n", (unsigned int)client->addr);
1132 strlcpy(info->type, name, I2C_NAME_SIZE);
1137 static void adt7475_remove_files(struct i2c_client *client,
1138 struct adt7475_data *data)
1140 sysfs_remove_group(&client->dev.kobj, &adt7475_attr_group);
1141 if (data->has_voltage & 0x39)
1142 sysfs_remove_group(&client->dev.kobj, &adt7490_attr_group);
1144 sysfs_remove_group(&client->dev.kobj, &fan4_attr_group);
1146 sysfs_remove_group(&client->dev.kobj, &pwm2_attr_group);
1147 if (data->has_voltage & (1 << 0))
1148 sysfs_remove_group(&client->dev.kobj, &in0_attr_group);
1151 static int adt7475_probe(struct i2c_client *client,
1152 const struct i2c_device_id *id)
1154 static const char *names[] = {
1155 [adt7473] = "ADT7473",
1156 [adt7475] = "ADT7475",
1157 [adt7490] = "ADT7490",
1160 struct adt7475_data *data;
1161 int i, ret = 0, revision;
1164 data = kzalloc(sizeof(*data), GFP_KERNEL);
1168 mutex_init(&data->lock);
1169 i2c_set_clientdata(client, data);
1171 /* Initialize device-specific values */
1172 switch (id->driver_data) {
1174 data->has_voltage = 0x3e; /* in1 to in5 */
1175 revision = adt7475_read(REG_DEVID2) & 0x03;
1176 if (revision == 0x03)
1177 revision += adt7475_read(REG_DEVREV2);
1180 data->has_voltage = 0x06; /* in1, in2 */
1181 revision = adt7475_read(REG_DEVID2) & 0x07;
1184 config3 = adt7475_read(REG_CONFIG3);
1185 /* Pin PWM2 may alternatively be used for ALERT output */
1186 if (!(config3 & CONFIG3_SMBALERT))
1188 /* Meaning of this bit is inverted for the ADT7473-1 */
1189 if (id->driver_data == adt7473 && revision >= 1)
1190 data->has_pwm2 = !data->has_pwm2;
1192 data->config4 = adt7475_read(REG_CONFIG4);
1193 /* Pin TACH4 may alternatively be used for THERM */
1194 if ((data->config4 & CONFIG4_PINFUNC) == 0x0)
1197 /* THERM configuration is more complex on the ADT7490, because 2
1198 different pins (TACH4 and +2.5 Vin) can be used for this function */
1199 if (id->driver_data == adt7490) {
1200 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 &&
1201 !(config3 & CONFIG3_THERM))
1203 if (!(config3 & CONFIG3_THERM) ||
1204 (data->config4 & CONFIG4_PINFUNC) == 0x1)
1205 data->has_voltage |= (1 << 0); /* in0 */
1208 /* Call adt7475_read_pwm for all pwm's as this will reprogram any
1209 pwm's which are disabled to manual mode with 0% duty cycle */
1210 for (i = 0; i < ADT7475_PWM_COUNT; i++)
1211 adt7475_read_pwm(client, i);
1213 ret = sysfs_create_group(&client->dev.kobj, &adt7475_attr_group);
1217 if (id->driver_data == adt7490) {
1218 ret = sysfs_create_group(&client->dev.kobj,
1219 &adt7490_attr_group);
1224 /* Features that can be disabled individually */
1225 if (data->has_fan4) {
1226 ret = sysfs_create_group(&client->dev.kobj, &fan4_attr_group);
1230 if (data->has_pwm2) {
1231 ret = sysfs_create_group(&client->dev.kobj, &pwm2_attr_group);
1235 if (data->has_voltage & (1 << 0)) {
1236 ret = sysfs_create_group(&client->dev.kobj, &in0_attr_group);
1241 data->hwmon_dev = hwmon_device_register(&client->dev);
1242 if (IS_ERR(data->hwmon_dev)) {
1243 ret = PTR_ERR(data->hwmon_dev);
1247 dev_info(&client->dev, "%s device, revision %d\n",
1248 names[id->driver_data], revision);
1249 if ((data->has_voltage & (1 << 0)) || data->has_fan4 || data->has_pwm2)
1250 dev_info(&client->dev, "Optional features:%s%s%s\n",
1251 (data->has_voltage & (1 << 0)) ? " in0" : "",
1252 data->has_fan4 ? " fan4" : "",
1253 data->has_pwm2 ? " pwm2" : "");
1258 adt7475_remove_files(client, data);
1264 static int adt7475_remove(struct i2c_client *client)
1266 struct adt7475_data *data = i2c_get_clientdata(client);
1268 hwmon_device_unregister(data->hwmon_dev);
1269 adt7475_remove_files(client, data);
1275 static struct i2c_driver adt7475_driver = {
1276 .class = I2C_CLASS_HWMON,
1280 .probe = adt7475_probe,
1281 .remove = adt7475_remove,
1282 .id_table = adt7475_id,
1283 .detect = adt7475_detect,
1284 .address_data = &addr_data,
1287 static void adt7475_read_hystersis(struct i2c_client *client)
1289 struct adt7475_data *data = i2c_get_clientdata(client);
1291 data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
1292 data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0];
1293 data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);
1296 static void adt7475_read_pwm(struct i2c_client *client, int index)
1298 struct adt7475_data *data = i2c_get_clientdata(client);
1301 data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index));
1303 /* Figure out the internal value for pwmctrl and pwmchan
1304 based on the current settings */
1305 v = (data->pwm[CONTROL][index] >> 5) & 7;
1308 data->pwmctl[index] = 0;
1310 data->pwmctl[index] = 1;
1312 /* The fan is disabled - we don't want to
1313 support that, so change to manual mode and
1314 set the duty cycle to 0 instead
1316 data->pwm[INPUT][index] = 0;
1317 data->pwm[CONTROL][index] &= ~0xE0;
1318 data->pwm[CONTROL][index] |= (7 << 5);
1320 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1321 data->pwm[INPUT][index]);
1323 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1324 data->pwm[CONTROL][index]);
1326 data->pwmctl[index] = 1;
1328 data->pwmctl[index] = 2;
1332 data->pwmchan[index] = 1;
1335 data->pwmchan[index] = 2;
1338 data->pwmchan[index] = 4;
1341 data->pwmchan[index] = 6;
1344 data->pwmchan[index] = 7;
1350 static struct adt7475_data *adt7475_update_device(struct device *dev)
1352 struct i2c_client *client = to_i2c_client(dev);
1353 struct adt7475_data *data = i2c_get_clientdata(client);
1357 mutex_lock(&data->lock);
1359 /* Measurement values update every 2 seconds */
1360 if (time_after(jiffies, data->measure_updated + HZ * 2) ||
1362 data->alarms = adt7475_read(REG_STATUS2) << 8;
1363 data->alarms |= adt7475_read(REG_STATUS1);
1365 ext = (adt7475_read(REG_EXTEND2) << 8) |
1366 adt7475_read(REG_EXTEND1);
1367 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1368 if (!(data->has_voltage & (1 << i)))
1370 data->voltage[INPUT][i] =
1371 (adt7475_read(VOLTAGE_REG(i)) << 2) |
1372 ((ext >> (i * 2)) & 3);
1375 for (i = 0; i < ADT7475_TEMP_COUNT; i++)
1376 data->temp[INPUT][i] =
1377 (adt7475_read(TEMP_REG(i)) << 2) |
1378 ((ext >> ((i + 5) * 2)) & 3);
1380 if (data->has_voltage & (1 << 5)) {
1381 data->alarms |= adt7475_read(REG_STATUS4) << 24;
1382 ext = adt7475_read(REG_EXTEND3);
1383 data->voltage[INPUT][5] = adt7475_read(REG_VTT) << 2 |
1387 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1388 if (i == 3 && !data->has_fan4)
1390 data->tach[INPUT][i] =
1391 adt7475_read_word(client, TACH_REG(i));
1394 /* Updated by hw when in auto mode */
1395 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1396 if (i == 1 && !data->has_pwm2)
1398 data->pwm[INPUT][i] = adt7475_read(PWM_REG(i));
1401 data->measure_updated = jiffies;
1404 /* Limits and settings, should never change update every 60 seconds */
1405 if (time_after(jiffies, data->limits_updated + HZ * 60) ||
1407 data->config4 = adt7475_read(REG_CONFIG4);
1408 data->config5 = adt7475_read(REG_CONFIG5);
1410 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1411 if (!(data->has_voltage & (1 << i)))
1413 /* Adjust values so they match the input precision */
1414 data->voltage[MIN][i] =
1415 adt7475_read(VOLTAGE_MIN_REG(i)) << 2;
1416 data->voltage[MAX][i] =
1417 adt7475_read(VOLTAGE_MAX_REG(i)) << 2;
1420 if (data->has_voltage & (1 << 5)) {
1421 data->voltage[MIN][5] = adt7475_read(REG_VTT_MIN) << 2;
1422 data->voltage[MAX][5] = adt7475_read(REG_VTT_MAX) << 2;
1425 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1426 /* Adjust values so they match the input precision */
1427 data->temp[MIN][i] =
1428 adt7475_read(TEMP_MIN_REG(i)) << 2;
1429 data->temp[MAX][i] =
1430 adt7475_read(TEMP_MAX_REG(i)) << 2;
1431 data->temp[AUTOMIN][i] =
1432 adt7475_read(TEMP_TMIN_REG(i)) << 2;
1433 data->temp[THERM][i] =
1434 adt7475_read(TEMP_THERM_REG(i)) << 2;
1435 data->temp[OFFSET][i] =
1436 adt7475_read(TEMP_OFFSET_REG(i));
1438 adt7475_read_hystersis(client);
1440 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1441 if (i == 3 && !data->has_fan4)
1443 data->tach[MIN][i] =
1444 adt7475_read_word(client, TACH_MIN_REG(i));
1447 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1448 if (i == 1 && !data->has_pwm2)
1450 data->pwm[MAX][i] = adt7475_read(PWM_MAX_REG(i));
1451 data->pwm[MIN][i] = adt7475_read(PWM_MIN_REG(i));
1452 /* Set the channel and control information */
1453 adt7475_read_pwm(client, i);
1456 data->range[0] = adt7475_read(TEMP_TRANGE_REG(0));
1457 data->range[1] = adt7475_read(TEMP_TRANGE_REG(1));
1458 data->range[2] = adt7475_read(TEMP_TRANGE_REG(2));
1460 data->limits_updated = jiffies;
1464 mutex_unlock(&data->lock);
1469 static int __init sensors_adt7475_init(void)
1471 return i2c_add_driver(&adt7475_driver);
1474 static void __exit sensors_adt7475_exit(void)
1476 i2c_del_driver(&adt7475_driver);
1479 MODULE_AUTHOR("Advanced Micro Devices, Inc");
1480 MODULE_DESCRIPTION("adt7475 driver");
1481 MODULE_LICENSE("GPL");
1483 module_init(sensors_adt7475_init);
1484 module_exit(sensors_adt7475_exit);