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 <jdelvare@suse.de>
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/of_device.h>
17 #include <linux/init.h>
18 #include <linux/slab.h>
19 #include <linux/i2c.h>
20 #include <linux/hwmon.h>
21 #include <linux/hwmon-sysfs.h>
22 #include <linux/hwmon-vid.h>
23 #include <linux/err.h>
24 #include <linux/jiffies.h>
26 /* Indexes for the sysfs hooks */
38 * These are unique identifiers for the sysfs functions - unlike the
39 * numbers above, these are not also indexes into an array
45 /* 7475 Common Registers */
47 #define REG_DEVREV2 0x12 /* ADT7490 only */
49 #define REG_VTT 0x1E /* ADT7490 only */
50 #define REG_EXTEND3 0x1F /* ADT7490 only */
52 #define REG_VOLTAGE_BASE 0x20
53 #define REG_TEMP_BASE 0x25
54 #define REG_TACH_BASE 0x28
55 #define REG_PWM_BASE 0x30
56 #define REG_PWM_MAX_BASE 0x38
58 #define REG_DEVID 0x3D
59 #define REG_VENDID 0x3E
60 #define REG_DEVID2 0x3F
62 #define REG_CONFIG1 0x40
64 #define REG_STATUS1 0x41
65 #define REG_STATUS2 0x42
67 #define REG_VID 0x43 /* ADT7476 only */
69 #define REG_VOLTAGE_MIN_BASE 0x44
70 #define REG_VOLTAGE_MAX_BASE 0x45
72 #define REG_TEMP_MIN_BASE 0x4E
73 #define REG_TEMP_MAX_BASE 0x4F
75 #define REG_TACH_MIN_BASE 0x54
77 #define REG_PWM_CONFIG_BASE 0x5C
79 #define REG_TEMP_TRANGE_BASE 0x5F
81 #define REG_PWM_MIN_BASE 0x64
83 #define REG_TEMP_TMIN_BASE 0x67
84 #define REG_TEMP_THERM_BASE 0x6A
86 #define REG_REMOTE1_HYSTERSIS 0x6D
87 #define REG_REMOTE2_HYSTERSIS 0x6E
89 #define REG_TEMP_OFFSET_BASE 0x70
91 #define REG_CONFIG2 0x73
93 #define REG_EXTEND1 0x76
94 #define REG_EXTEND2 0x77
96 #define REG_CONFIG3 0x78
97 #define REG_CONFIG5 0x7C
98 #define REG_CONFIG4 0x7D
100 #define REG_STATUS4 0x81 /* ADT7490 only */
102 #define REG_VTT_MIN 0x84 /* ADT7490 only */
103 #define REG_VTT_MAX 0x86 /* ADT7490 only */
105 #define VID_VIDSEL 0x80 /* ADT7476 only */
107 #define CONFIG2_ATTN 0x20
109 #define CONFIG3_SMBALERT 0x01
110 #define CONFIG3_THERM 0x02
112 #define CONFIG4_PINFUNC 0x03
113 #define CONFIG4_MAXDUTY 0x08
114 #define CONFIG4_ATTN_IN10 0x30
115 #define CONFIG4_ATTN_IN43 0xC0
117 #define CONFIG5_TWOSCOMP 0x01
118 #define CONFIG5_TEMPOFFSET 0x02
119 #define CONFIG5_VIDGPIO 0x10 /* ADT7476 only */
121 /* ADT7475 Settings */
123 #define ADT7475_VOLTAGE_COUNT 5 /* Not counting Vtt */
124 #define ADT7475_TEMP_COUNT 3
125 #define ADT7475_TACH_COUNT 4
126 #define ADT7475_PWM_COUNT 3
128 /* Macro to read the registers */
130 #define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg))
132 /* Macros to easily index the registers */
134 #define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2))
135 #define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2))
137 #define PWM_REG(idx) (REG_PWM_BASE + (idx))
138 #define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx))
139 #define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx))
140 #define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx))
142 #define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx))
143 #define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2))
144 #define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2))
146 #define TEMP_REG(idx) (REG_TEMP_BASE + (idx))
147 #define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2))
148 #define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2))
149 #define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx))
150 #define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx))
151 #define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx))
152 #define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx))
154 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
156 enum chips { adt7473, adt7475, adt7476, adt7490 };
158 static const struct i2c_device_id adt7475_id[] = {
159 { "adt7473", adt7473 },
160 { "adt7475", adt7475 },
161 { "adt7476", adt7476 },
162 { "adt7490", adt7490 },
165 MODULE_DEVICE_TABLE(i2c, adt7475_id);
167 static const struct of_device_id adt7475_of_match[] = {
169 .compatible = "adi,adt7473",
170 .data = (void *)adt7473
173 .compatible = "adi,adt7475",
174 .data = (void *)adt7475
177 .compatible = "adi,adt7476",
178 .data = (void *)adt7476
181 .compatible = "adi,adt7490",
182 .data = (void *)adt7490
186 MODULE_DEVICE_TABLE(of, adt7475_of_match);
188 struct adt7475_data {
189 struct device *hwmon_dev;
192 unsigned long measure_updated;
193 unsigned long limits_updated;
199 u8 bypass_attn; /* Bypass voltage attenuator */
216 static struct i2c_driver adt7475_driver;
217 static struct adt7475_data *adt7475_update_device(struct device *dev);
218 static void adt7475_read_hystersis(struct i2c_client *client);
219 static void adt7475_read_pwm(struct i2c_client *client, int index);
221 /* Given a temp value, convert it to register value */
223 static inline u16 temp2reg(struct adt7475_data *data, long val)
227 if (!(data->config5 & CONFIG5_TWOSCOMP)) {
228 val = clamp_val(val, -64000, 191000);
229 ret = (val + 64500) / 1000;
231 val = clamp_val(val, -128000, 127000);
233 ret = (256500 + val) / 1000;
235 ret = (val + 500) / 1000;
241 /* Given a register value, convert it to a real temp value */
243 static inline int reg2temp(struct adt7475_data *data, u16 reg)
245 if (data->config5 & CONFIG5_TWOSCOMP) {
247 return (reg - 1024) * 250;
251 return (reg - 256) * 250;
254 static inline int tach2rpm(u16 tach)
256 if (tach == 0 || tach == 0xFFFF)
259 return (90000 * 60) / tach;
262 static inline u16 rpm2tach(unsigned long rpm)
267 return clamp_val((90000 * 60) / rpm, 1, 0xFFFF);
270 /* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */
271 static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 1][2] = {
272 { 45, 94 }, /* +2.5V */
273 { 175, 525 }, /* Vccp */
274 { 68, 71 }, /* Vcc */
275 { 93, 47 }, /* +5V */
276 { 120, 20 }, /* +12V */
277 { 45, 45 }, /* Vtt */
280 static inline int reg2volt(int channel, u16 reg, u8 bypass_attn)
282 const int *r = adt7473_in_scaling[channel];
284 if (bypass_attn & (1 << channel))
285 return DIV_ROUND_CLOSEST(reg * 2250, 1024);
286 return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024);
289 static inline u16 volt2reg(int channel, long volt, u8 bypass_attn)
291 const int *r = adt7473_in_scaling[channel];
294 if (bypass_attn & (1 << channel))
295 reg = (volt * 1024) / 2250;
297 reg = (volt * r[1] * 1024) / ((r[0] + r[1]) * 2250);
298 return clamp_val(reg, 0, 1023) & (0xff << 2);
301 static u16 adt7475_read_word(struct i2c_client *client, int reg)
305 val = i2c_smbus_read_byte_data(client, reg);
306 val |= (i2c_smbus_read_byte_data(client, reg + 1) << 8);
311 static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)
313 i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
314 i2c_smbus_write_byte_data(client, reg, val & 0xFF);
318 * Find the nearest value in a table - used for pwm frequency and
321 static int find_nearest(long val, const int *array, int size)
328 if (val > array[size - 1])
331 for (i = 0; i < size - 1; i++) {
334 if (val > array[i + 1])
338 b = array[i + 1] - val;
340 return (a <= b) ? i : i + 1;
346 static ssize_t show_voltage(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 return sprintf(buf, "%d\n",
356 (data->alarms >> sattr->index) & 1);
358 val = data->voltage[sattr->nr][sattr->index];
359 return sprintf(buf, "%d\n",
360 reg2volt(sattr->index, val, data->bypass_attn));
364 static ssize_t set_voltage(struct device *dev, struct device_attribute *attr,
365 const char *buf, size_t count)
368 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
369 struct i2c_client *client = to_i2c_client(dev);
370 struct adt7475_data *data = i2c_get_clientdata(client);
374 if (kstrtol(buf, 10, &val))
377 mutex_lock(&data->lock);
379 data->voltage[sattr->nr][sattr->index] =
380 volt2reg(sattr->index, val, data->bypass_attn);
382 if (sattr->index < ADT7475_VOLTAGE_COUNT) {
383 if (sattr->nr == MIN)
384 reg = VOLTAGE_MIN_REG(sattr->index);
386 reg = VOLTAGE_MAX_REG(sattr->index);
388 if (sattr->nr == MIN)
394 i2c_smbus_write_byte_data(client, reg,
395 data->voltage[sattr->nr][sattr->index] >> 2);
396 mutex_unlock(&data->lock);
401 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
404 struct adt7475_data *data = adt7475_update_device(dev);
405 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
410 mutex_lock(&data->lock);
411 out = data->temp[sattr->nr][sattr->index];
412 if (sattr->index != 1)
413 out = (out >> 4) & 0xF;
417 * Show the value as an absolute number tied to
420 out = reg2temp(data, data->temp[THERM][sattr->index]) -
422 mutex_unlock(&data->lock);
427 * Offset is always 2's complement, regardless of the
430 mutex_lock(&data->lock);
431 out = (s8)data->temp[sattr->nr][sattr->index];
432 if (data->config5 & CONFIG5_TEMPOFFSET)
436 mutex_unlock(&data->lock);
440 out = (data->alarms >> (sattr->index + 4)) & 1;
444 /* Note - only for remote1 and remote2 */
445 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000));
449 /* All other temp values are in the configured format */
450 out = reg2temp(data, data->temp[sattr->nr][sattr->index]);
453 return sprintf(buf, "%d\n", out);
456 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
457 const char *buf, size_t count)
459 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
460 struct i2c_client *client = to_i2c_client(dev);
461 struct adt7475_data *data = i2c_get_clientdata(client);
462 unsigned char reg = 0;
467 if (kstrtol(buf, 10, &val))
470 mutex_lock(&data->lock);
472 /* We need the config register in all cases for temp <-> reg conv. */
473 data->config5 = adt7475_read(REG_CONFIG5);
477 if (data->config5 & CONFIG5_TEMPOFFSET) {
478 val = clamp_val(val, -63000, 127000);
479 out = data->temp[OFFSET][sattr->index] = val / 1000;
481 val = clamp_val(val, -63000, 64000);
482 out = data->temp[OFFSET][sattr->index] = val / 500;
488 * The value will be given as an absolute value, turn it
489 * into an offset based on THERM
492 /* Read fresh THERM and HYSTERSIS values from the chip */
493 data->temp[THERM][sattr->index] =
494 adt7475_read(TEMP_THERM_REG(sattr->index)) << 2;
495 adt7475_read_hystersis(client);
497 temp = reg2temp(data, data->temp[THERM][sattr->index]);
498 val = clamp_val(val, temp - 15000, temp);
499 val = (temp - val) / 1000;
501 if (sattr->index != 1) {
502 data->temp[HYSTERSIS][sattr->index] &= 0xF0;
503 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4;
505 data->temp[HYSTERSIS][sattr->index] &= 0x0F;
506 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF);
509 out = data->temp[HYSTERSIS][sattr->index];
513 data->temp[sattr->nr][sattr->index] = temp2reg(data, val);
516 * We maintain an extra 2 digits of precision for simplicity
517 * - shift those back off before writing the value
519 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2);
524 reg = TEMP_MIN_REG(sattr->index);
527 reg = TEMP_MAX_REG(sattr->index);
530 reg = TEMP_OFFSET_REG(sattr->index);
533 reg = TEMP_TMIN_REG(sattr->index);
536 reg = TEMP_THERM_REG(sattr->index);
539 if (sattr->index != 2)
540 reg = REG_REMOTE1_HYSTERSIS;
542 reg = REG_REMOTE2_HYSTERSIS;
547 i2c_smbus_write_byte_data(client, reg, out);
549 mutex_unlock(&data->lock);
554 * Table of autorange values - the user will write the value in millidegrees,
555 * and we'll convert it
557 static const int autorange_table[] = {
558 2000, 2500, 3330, 4000, 5000, 6670, 8000,
559 10000, 13330, 16000, 20000, 26670, 32000, 40000,
563 static ssize_t show_point2(struct device *dev, struct device_attribute *attr,
566 struct adt7475_data *data = adt7475_update_device(dev);
567 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
570 mutex_lock(&data->lock);
571 out = (data->range[sattr->index] >> 4) & 0x0F;
572 val = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
573 mutex_unlock(&data->lock);
575 return sprintf(buf, "%d\n", val + autorange_table[out]);
578 static ssize_t set_point2(struct device *dev, struct device_attribute *attr,
579 const char *buf, size_t count)
581 struct i2c_client *client = to_i2c_client(dev);
582 struct adt7475_data *data = i2c_get_clientdata(client);
583 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
587 if (kstrtol(buf, 10, &val))
590 mutex_lock(&data->lock);
592 /* Get a fresh copy of the needed registers */
593 data->config5 = adt7475_read(REG_CONFIG5);
594 data->temp[AUTOMIN][sattr->index] =
595 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2;
596 data->range[sattr->index] =
597 adt7475_read(TEMP_TRANGE_REG(sattr->index));
600 * The user will write an absolute value, so subtract the start point
601 * to figure the range
603 temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
604 val = clamp_val(val, temp + autorange_table[0],
605 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]);
608 /* Find the nearest table entry to what the user wrote */
609 val = find_nearest(val, autorange_table, ARRAY_SIZE(autorange_table));
611 data->range[sattr->index] &= ~0xF0;
612 data->range[sattr->index] |= val << 4;
614 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
615 data->range[sattr->index]);
617 mutex_unlock(&data->lock);
621 static ssize_t show_tach(struct device *dev, struct device_attribute *attr,
624 struct adt7475_data *data = adt7475_update_device(dev);
625 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
628 if (sattr->nr == ALARM)
629 out = (data->alarms >> (sattr->index + 10)) & 1;
631 out = tach2rpm(data->tach[sattr->nr][sattr->index]);
633 return sprintf(buf, "%d\n", out);
636 static ssize_t set_tach(struct device *dev, struct device_attribute *attr,
637 const char *buf, size_t count)
640 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
641 struct i2c_client *client = to_i2c_client(dev);
642 struct adt7475_data *data = i2c_get_clientdata(client);
645 if (kstrtoul(buf, 10, &val))
648 mutex_lock(&data->lock);
650 data->tach[MIN][sattr->index] = rpm2tach(val);
652 adt7475_write_word(client, TACH_MIN_REG(sattr->index),
653 data->tach[MIN][sattr->index]);
655 mutex_unlock(&data->lock);
659 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
662 struct adt7475_data *data = adt7475_update_device(dev);
663 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
665 return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);
668 static ssize_t show_pwmchan(struct device *dev, struct device_attribute *attr,
671 struct adt7475_data *data = adt7475_update_device(dev);
672 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
674 return sprintf(buf, "%d\n", data->pwmchan[sattr->index]);
677 static ssize_t show_pwmctrl(struct device *dev, struct device_attribute *attr,
680 struct adt7475_data *data = adt7475_update_device(dev);
681 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
683 return sprintf(buf, "%d\n", data->pwmctl[sattr->index]);
686 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
687 const char *buf, size_t count)
690 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
691 struct i2c_client *client = to_i2c_client(dev);
692 struct adt7475_data *data = i2c_get_clientdata(client);
693 unsigned char reg = 0;
696 if (kstrtol(buf, 10, &val))
699 mutex_lock(&data->lock);
703 /* Get a fresh value for CONTROL */
704 data->pwm[CONTROL][sattr->index] =
705 adt7475_read(PWM_CONFIG_REG(sattr->index));
708 * If we are not in manual mode, then we shouldn't allow
709 * the user to set the pwm speed
711 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) {
712 mutex_unlock(&data->lock);
716 reg = PWM_REG(sattr->index);
720 reg = PWM_MIN_REG(sattr->index);
724 reg = PWM_MAX_REG(sattr->index);
728 data->pwm[sattr->nr][sattr->index] = clamp_val(val, 0, 0xFF);
729 i2c_smbus_write_byte_data(client, reg,
730 data->pwm[sattr->nr][sattr->index]);
732 mutex_unlock(&data->lock);
737 /* Called by set_pwmctrl and set_pwmchan */
739 static int hw_set_pwm(struct i2c_client *client, int index,
740 unsigned int pwmctl, unsigned int pwmchan)
742 struct adt7475_data *data = i2c_get_clientdata(client);
747 val = 0x03; /* Run at full speed */
750 val = 0x07; /* Manual mode */
755 /* Remote1 controls PWM */
759 /* local controls PWM */
763 /* remote2 controls PWM */
767 /* local/remote2 control PWM */
771 /* All three control PWM */
782 data->pwmctl[index] = pwmctl;
783 data->pwmchan[index] = pwmchan;
785 data->pwm[CONTROL][index] &= ~0xE0;
786 data->pwm[CONTROL][index] |= (val & 7) << 5;
788 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
789 data->pwm[CONTROL][index]);
794 static ssize_t set_pwmchan(struct device *dev, struct device_attribute *attr,
795 const char *buf, size_t count)
797 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
798 struct i2c_client *client = to_i2c_client(dev);
799 struct adt7475_data *data = i2c_get_clientdata(client);
803 if (kstrtol(buf, 10, &val))
806 mutex_lock(&data->lock);
807 /* Read Modify Write PWM values */
808 adt7475_read_pwm(client, sattr->index);
809 r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val);
812 mutex_unlock(&data->lock);
817 static ssize_t set_pwmctrl(struct device *dev, struct device_attribute *attr,
818 const char *buf, size_t count)
820 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
821 struct i2c_client *client = to_i2c_client(dev);
822 struct adt7475_data *data = i2c_get_clientdata(client);
826 if (kstrtol(buf, 10, &val))
829 mutex_lock(&data->lock);
830 /* Read Modify Write PWM values */
831 adt7475_read_pwm(client, sattr->index);
832 r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]);
835 mutex_unlock(&data->lock);
840 /* List of frequencies for the PWM */
841 static const int pwmfreq_table[] = {
842 11, 14, 22, 29, 35, 44, 58, 88
845 static ssize_t show_pwmfreq(struct device *dev, struct device_attribute *attr,
848 struct adt7475_data *data = adt7475_update_device(dev);
849 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
851 return sprintf(buf, "%d\n",
852 pwmfreq_table[data->range[sattr->index] & 7]);
855 static ssize_t set_pwmfreq(struct device *dev, struct device_attribute *attr,
856 const char *buf, size_t count)
858 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
859 struct i2c_client *client = to_i2c_client(dev);
860 struct adt7475_data *data = i2c_get_clientdata(client);
864 if (kstrtol(buf, 10, &val))
867 out = find_nearest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));
869 mutex_lock(&data->lock);
871 data->range[sattr->index] =
872 adt7475_read(TEMP_TRANGE_REG(sattr->index));
873 data->range[sattr->index] &= ~7;
874 data->range[sattr->index] |= out;
876 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
877 data->range[sattr->index]);
879 mutex_unlock(&data->lock);
883 static ssize_t pwm_use_point2_pwm_at_crit_show(struct device *dev,
884 struct device_attribute *devattr,
887 struct adt7475_data *data = adt7475_update_device(dev);
888 return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));
891 static ssize_t pwm_use_point2_pwm_at_crit_store(struct device *dev,
892 struct device_attribute *devattr,
893 const char *buf, size_t count)
895 struct i2c_client *client = to_i2c_client(dev);
896 struct adt7475_data *data = i2c_get_clientdata(client);
899 if (kstrtol(buf, 10, &val))
901 if (val != 0 && val != 1)
904 mutex_lock(&data->lock);
905 data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);
907 data->config4 |= CONFIG4_MAXDUTY;
909 data->config4 &= ~CONFIG4_MAXDUTY;
910 i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);
911 mutex_unlock(&data->lock);
916 static ssize_t vrm_show(struct device *dev, struct device_attribute *devattr,
919 struct adt7475_data *data = dev_get_drvdata(dev);
920 return sprintf(buf, "%d\n", (int)data->vrm);
923 static ssize_t vrm_store(struct device *dev, struct device_attribute *devattr,
924 const char *buf, size_t count)
926 struct adt7475_data *data = dev_get_drvdata(dev);
929 if (kstrtol(buf, 10, &val))
931 if (val < 0 || val > 255)
938 static ssize_t cpu0_vid_show(struct device *dev,
939 struct device_attribute *devattr, char *buf)
941 struct adt7475_data *data = adt7475_update_device(dev);
942 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
945 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_voltage, NULL, INPUT, 0);
946 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_voltage,
947 set_voltage, MAX, 0);
948 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_voltage,
949 set_voltage, MIN, 0);
950 static SENSOR_DEVICE_ATTR_2(in0_alarm, S_IRUGO, show_voltage, NULL, ALARM, 0);
951 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_voltage, NULL, INPUT, 1);
952 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_voltage,
953 set_voltage, MAX, 1);
954 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_voltage,
955 set_voltage, MIN, 1);
956 static SENSOR_DEVICE_ATTR_2(in1_alarm, S_IRUGO, show_voltage, NULL, ALARM, 1);
957 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_voltage, NULL, INPUT, 2);
958 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_voltage,
959 set_voltage, MAX, 2);
960 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_voltage,
961 set_voltage, MIN, 2);
962 static SENSOR_DEVICE_ATTR_2(in2_alarm, S_IRUGO, show_voltage, NULL, ALARM, 2);
963 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_voltage, NULL, INPUT, 3);
964 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_voltage,
965 set_voltage, MAX, 3);
966 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_voltage,
967 set_voltage, MIN, 3);
968 static SENSOR_DEVICE_ATTR_2(in3_alarm, S_IRUGO, show_voltage, NULL, ALARM, 3);
969 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_voltage, NULL, INPUT, 4);
970 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_voltage,
971 set_voltage, MAX, 4);
972 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_voltage,
973 set_voltage, MIN, 4);
974 static SENSOR_DEVICE_ATTR_2(in4_alarm, S_IRUGO, show_voltage, NULL, ALARM, 8);
975 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_voltage, NULL, INPUT, 5);
976 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_voltage,
977 set_voltage, MAX, 5);
978 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_voltage,
979 set_voltage, MIN, 5);
980 static SENSOR_DEVICE_ATTR_2(in5_alarm, S_IRUGO, show_voltage, NULL, ALARM, 31);
981 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, INPUT, 0);
982 static SENSOR_DEVICE_ATTR_2(temp1_alarm, S_IRUGO, show_temp, NULL, ALARM, 0);
983 static SENSOR_DEVICE_ATTR_2(temp1_fault, S_IRUGO, show_temp, NULL, FAULT, 0);
984 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
986 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
988 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
989 set_temp, OFFSET, 0);
990 static SENSOR_DEVICE_ATTR_2(temp1_auto_point1_temp, S_IRUGO | S_IWUSR,
991 show_temp, set_temp, AUTOMIN, 0);
992 static SENSOR_DEVICE_ATTR_2(temp1_auto_point2_temp, S_IRUGO | S_IWUSR,
993 show_point2, set_point2, 0, 0);
994 static SENSOR_DEVICE_ATTR_2(temp1_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
996 static SENSOR_DEVICE_ATTR_2(temp1_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
997 set_temp, HYSTERSIS, 0);
998 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, INPUT, 1);
999 static SENSOR_DEVICE_ATTR_2(temp2_alarm, S_IRUGO, show_temp, NULL, ALARM, 1);
1000 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1002 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1004 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
1005 set_temp, OFFSET, 1);
1006 static SENSOR_DEVICE_ATTR_2(temp2_auto_point1_temp, S_IRUGO | S_IWUSR,
1007 show_temp, set_temp, AUTOMIN, 1);
1008 static SENSOR_DEVICE_ATTR_2(temp2_auto_point2_temp, S_IRUGO | S_IWUSR,
1009 show_point2, set_point2, 0, 1);
1010 static SENSOR_DEVICE_ATTR_2(temp2_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
1012 static SENSOR_DEVICE_ATTR_2(temp2_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
1013 set_temp, HYSTERSIS, 1);
1014 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, INPUT, 2);
1015 static SENSOR_DEVICE_ATTR_2(temp3_alarm, S_IRUGO, show_temp, NULL, ALARM, 2);
1016 static SENSOR_DEVICE_ATTR_2(temp3_fault, S_IRUGO, show_temp, NULL, FAULT, 2);
1017 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1019 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1021 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
1022 set_temp, OFFSET, 2);
1023 static SENSOR_DEVICE_ATTR_2(temp3_auto_point1_temp, S_IRUGO | S_IWUSR,
1024 show_temp, set_temp, AUTOMIN, 2);
1025 static SENSOR_DEVICE_ATTR_2(temp3_auto_point2_temp, S_IRUGO | S_IWUSR,
1026 show_point2, set_point2, 0, 2);
1027 static SENSOR_DEVICE_ATTR_2(temp3_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
1029 static SENSOR_DEVICE_ATTR_2(temp3_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
1030 set_temp, HYSTERSIS, 2);
1031 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_tach, NULL, INPUT, 0);
1032 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1034 static SENSOR_DEVICE_ATTR_2(fan1_alarm, S_IRUGO, show_tach, NULL, ALARM, 0);
1035 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_tach, NULL, INPUT, 1);
1036 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1038 static SENSOR_DEVICE_ATTR_2(fan2_alarm, S_IRUGO, show_tach, NULL, ALARM, 1);
1039 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_tach, NULL, INPUT, 2);
1040 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1042 static SENSOR_DEVICE_ATTR_2(fan3_alarm, S_IRUGO, show_tach, NULL, ALARM, 2);
1043 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_tach, NULL, INPUT, 3);
1044 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1046 static SENSOR_DEVICE_ATTR_2(fan4_alarm, S_IRUGO, show_tach, NULL, ALARM, 3);
1047 static SENSOR_DEVICE_ATTR_2(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
1049 static SENSOR_DEVICE_ATTR_2(pwm1_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
1050 set_pwmfreq, INPUT, 0);
1051 static SENSOR_DEVICE_ATTR_2(pwm1_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
1052 set_pwmctrl, INPUT, 0);
1053 static SENSOR_DEVICE_ATTR_2(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
1054 show_pwmchan, set_pwmchan, INPUT, 0);
1055 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1057 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1059 static SENSOR_DEVICE_ATTR_2(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
1061 static SENSOR_DEVICE_ATTR_2(pwm2_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
1062 set_pwmfreq, INPUT, 1);
1063 static SENSOR_DEVICE_ATTR_2(pwm2_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
1064 set_pwmctrl, INPUT, 1);
1065 static SENSOR_DEVICE_ATTR_2(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
1066 show_pwmchan, set_pwmchan, INPUT, 1);
1067 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1069 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1071 static SENSOR_DEVICE_ATTR_2(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
1073 static SENSOR_DEVICE_ATTR_2(pwm3_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
1074 set_pwmfreq, INPUT, 2);
1075 static SENSOR_DEVICE_ATTR_2(pwm3_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
1076 set_pwmctrl, INPUT, 2);
1077 static SENSOR_DEVICE_ATTR_2(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
1078 show_pwmchan, set_pwmchan, INPUT, 2);
1079 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1081 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1084 /* Non-standard name, might need revisiting */
1085 static DEVICE_ATTR_RW(pwm_use_point2_pwm_at_crit);
1087 static DEVICE_ATTR_RW(vrm);
1088 static DEVICE_ATTR_RO(cpu0_vid);
1090 static struct attribute *adt7475_attrs[] = {
1091 &sensor_dev_attr_in1_input.dev_attr.attr,
1092 &sensor_dev_attr_in1_max.dev_attr.attr,
1093 &sensor_dev_attr_in1_min.dev_attr.attr,
1094 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1095 &sensor_dev_attr_in2_input.dev_attr.attr,
1096 &sensor_dev_attr_in2_max.dev_attr.attr,
1097 &sensor_dev_attr_in2_min.dev_attr.attr,
1098 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1099 &sensor_dev_attr_temp1_input.dev_attr.attr,
1100 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1101 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1102 &sensor_dev_attr_temp1_max.dev_attr.attr,
1103 &sensor_dev_attr_temp1_min.dev_attr.attr,
1104 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1105 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1106 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1107 &sensor_dev_attr_temp1_crit.dev_attr.attr,
1108 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
1109 &sensor_dev_attr_temp2_input.dev_attr.attr,
1110 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1111 &sensor_dev_attr_temp2_max.dev_attr.attr,
1112 &sensor_dev_attr_temp2_min.dev_attr.attr,
1113 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1114 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1115 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1116 &sensor_dev_attr_temp2_crit.dev_attr.attr,
1117 &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
1118 &sensor_dev_attr_temp3_input.dev_attr.attr,
1119 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1120 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1121 &sensor_dev_attr_temp3_max.dev_attr.attr,
1122 &sensor_dev_attr_temp3_min.dev_attr.attr,
1123 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1124 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1125 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1126 &sensor_dev_attr_temp3_crit.dev_attr.attr,
1127 &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
1128 &sensor_dev_attr_fan1_input.dev_attr.attr,
1129 &sensor_dev_attr_fan1_min.dev_attr.attr,
1130 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1131 &sensor_dev_attr_fan2_input.dev_attr.attr,
1132 &sensor_dev_attr_fan2_min.dev_attr.attr,
1133 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1134 &sensor_dev_attr_fan3_input.dev_attr.attr,
1135 &sensor_dev_attr_fan3_min.dev_attr.attr,
1136 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1137 &sensor_dev_attr_pwm1.dev_attr.attr,
1138 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1139 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1140 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1141 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1142 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1143 &sensor_dev_attr_pwm3.dev_attr.attr,
1144 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1145 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1146 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1147 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1148 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1149 &dev_attr_pwm_use_point2_pwm_at_crit.attr,
1153 static struct attribute *fan4_attrs[] = {
1154 &sensor_dev_attr_fan4_input.dev_attr.attr,
1155 &sensor_dev_attr_fan4_min.dev_attr.attr,
1156 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1160 static struct attribute *pwm2_attrs[] = {
1161 &sensor_dev_attr_pwm2.dev_attr.attr,
1162 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1163 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1164 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1165 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1166 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1170 static struct attribute *in0_attrs[] = {
1171 &sensor_dev_attr_in0_input.dev_attr.attr,
1172 &sensor_dev_attr_in0_max.dev_attr.attr,
1173 &sensor_dev_attr_in0_min.dev_attr.attr,
1174 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1178 static struct attribute *in3_attrs[] = {
1179 &sensor_dev_attr_in3_input.dev_attr.attr,
1180 &sensor_dev_attr_in3_max.dev_attr.attr,
1181 &sensor_dev_attr_in3_min.dev_attr.attr,
1182 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1186 static struct attribute *in4_attrs[] = {
1187 &sensor_dev_attr_in4_input.dev_attr.attr,
1188 &sensor_dev_attr_in4_max.dev_attr.attr,
1189 &sensor_dev_attr_in4_min.dev_attr.attr,
1190 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1194 static struct attribute *in5_attrs[] = {
1195 &sensor_dev_attr_in5_input.dev_attr.attr,
1196 &sensor_dev_attr_in5_max.dev_attr.attr,
1197 &sensor_dev_attr_in5_min.dev_attr.attr,
1198 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1202 static struct attribute *vid_attrs[] = {
1203 &dev_attr_cpu0_vid.attr,
1208 static struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
1209 static struct attribute_group fan4_attr_group = { .attrs = fan4_attrs };
1210 static struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs };
1211 static struct attribute_group in0_attr_group = { .attrs = in0_attrs };
1212 static struct attribute_group in3_attr_group = { .attrs = in3_attrs };
1213 static struct attribute_group in4_attr_group = { .attrs = in4_attrs };
1214 static struct attribute_group in5_attr_group = { .attrs = in5_attrs };
1215 static struct attribute_group vid_attr_group = { .attrs = vid_attrs };
1217 static int adt7475_detect(struct i2c_client *client,
1218 struct i2c_board_info *info)
1220 struct i2c_adapter *adapter = client->adapter;
1221 int vendid, devid, devid2;
1224 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1227 vendid = adt7475_read(REG_VENDID);
1228 devid2 = adt7475_read(REG_DEVID2);
1229 if (vendid != 0x41 || /* Analog Devices */
1230 (devid2 & 0xf8) != 0x68)
1233 devid = adt7475_read(REG_DEVID);
1236 else if (devid == 0x75 && client->addr == 0x2e)
1238 else if (devid == 0x76)
1240 else if ((devid2 & 0xfc) == 0x6c)
1243 dev_dbg(&adapter->dev,
1244 "Couldn't detect an ADT7473/75/76/90 part at "
1245 "0x%02x\n", (unsigned int)client->addr);
1249 strlcpy(info->type, name, I2C_NAME_SIZE);
1254 static void adt7475_remove_files(struct i2c_client *client,
1255 struct adt7475_data *data)
1257 sysfs_remove_group(&client->dev.kobj, &adt7475_attr_group);
1259 sysfs_remove_group(&client->dev.kobj, &fan4_attr_group);
1261 sysfs_remove_group(&client->dev.kobj, &pwm2_attr_group);
1262 if (data->has_voltage & (1 << 0))
1263 sysfs_remove_group(&client->dev.kobj, &in0_attr_group);
1264 if (data->has_voltage & (1 << 3))
1265 sysfs_remove_group(&client->dev.kobj, &in3_attr_group);
1266 if (data->has_voltage & (1 << 4))
1267 sysfs_remove_group(&client->dev.kobj, &in4_attr_group);
1268 if (data->has_voltage & (1 << 5))
1269 sysfs_remove_group(&client->dev.kobj, &in5_attr_group);
1271 sysfs_remove_group(&client->dev.kobj, &vid_attr_group);
1274 static int adt7475_probe(struct i2c_client *client,
1275 const struct i2c_device_id *id)
1278 static const char * const names[] = {
1279 [adt7473] = "ADT7473",
1280 [adt7475] = "ADT7475",
1281 [adt7476] = "ADT7476",
1282 [adt7490] = "ADT7490",
1285 struct adt7475_data *data;
1286 int i, ret = 0, revision;
1287 u8 config2, config3;
1289 data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
1293 mutex_init(&data->lock);
1294 i2c_set_clientdata(client, data);
1296 if (client->dev.of_node)
1297 chip = (enum chips)of_device_get_match_data(&client->dev);
1299 chip = id->driver_data;
1301 /* Initialize device-specific values */
1304 data->has_voltage = 0x0e; /* in1 to in3 */
1305 revision = adt7475_read(REG_DEVID2) & 0x07;
1308 data->has_voltage = 0x3e; /* in1 to in5 */
1309 revision = adt7475_read(REG_DEVID2) & 0x03;
1310 if (revision == 0x03)
1311 revision += adt7475_read(REG_DEVREV2);
1314 data->has_voltage = 0x06; /* in1, in2 */
1315 revision = adt7475_read(REG_DEVID2) & 0x07;
1318 config3 = adt7475_read(REG_CONFIG3);
1319 /* Pin PWM2 may alternatively be used for ALERT output */
1320 if (!(config3 & CONFIG3_SMBALERT))
1322 /* Meaning of this bit is inverted for the ADT7473-1 */
1323 if (id->driver_data == adt7473 && revision >= 1)
1324 data->has_pwm2 = !data->has_pwm2;
1326 data->config4 = adt7475_read(REG_CONFIG4);
1327 /* Pin TACH4 may alternatively be used for THERM */
1328 if ((data->config4 & CONFIG4_PINFUNC) == 0x0)
1332 * THERM configuration is more complex on the ADT7476 and ADT7490,
1333 * because 2 different pins (TACH4 and +2.5 Vin) can be used for
1336 if (id->driver_data == adt7490) {
1337 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 &&
1338 !(config3 & CONFIG3_THERM))
1341 if (id->driver_data == adt7476 || id->driver_data == adt7490) {
1342 if (!(config3 & CONFIG3_THERM) ||
1343 (data->config4 & CONFIG4_PINFUNC) == 0x1)
1344 data->has_voltage |= (1 << 0); /* in0 */
1348 * On the ADT7476, the +12V input pin may instead be used as VID5,
1349 * and VID pins may alternatively be used as GPIO
1351 if (id->driver_data == adt7476) {
1352 u8 vid = adt7475_read(REG_VID);
1353 if (!(vid & VID_VIDSEL))
1354 data->has_voltage |= (1 << 4); /* in4 */
1356 data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO);
1359 /* Voltage attenuators can be bypassed, globally or individually */
1360 config2 = adt7475_read(REG_CONFIG2);
1361 if (config2 & CONFIG2_ATTN) {
1362 data->bypass_attn = (0x3 << 3) | 0x3;
1364 data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) |
1365 ((data->config4 & CONFIG4_ATTN_IN43) >> 3);
1367 data->bypass_attn &= data->has_voltage;
1370 * Call adt7475_read_pwm for all pwm's as this will reprogram any
1371 * pwm's which are disabled to manual mode with 0% duty cycle
1373 for (i = 0; i < ADT7475_PWM_COUNT; i++)
1374 adt7475_read_pwm(client, i);
1376 /* Start monitoring */
1380 i2c_smbus_write_byte_data(client, REG_CONFIG1,
1381 adt7475_read(REG_CONFIG1) | 0x01);
1387 ret = sysfs_create_group(&client->dev.kobj, &adt7475_attr_group);
1391 /* Features that can be disabled individually */
1392 if (data->has_fan4) {
1393 ret = sysfs_create_group(&client->dev.kobj, &fan4_attr_group);
1397 if (data->has_pwm2) {
1398 ret = sysfs_create_group(&client->dev.kobj, &pwm2_attr_group);
1402 if (data->has_voltage & (1 << 0)) {
1403 ret = sysfs_create_group(&client->dev.kobj, &in0_attr_group);
1407 if (data->has_voltage & (1 << 3)) {
1408 ret = sysfs_create_group(&client->dev.kobj, &in3_attr_group);
1412 if (data->has_voltage & (1 << 4)) {
1413 ret = sysfs_create_group(&client->dev.kobj, &in4_attr_group);
1417 if (data->has_voltage & (1 << 5)) {
1418 ret = sysfs_create_group(&client->dev.kobj, &in5_attr_group);
1422 if (data->has_vid) {
1423 data->vrm = vid_which_vrm();
1424 ret = sysfs_create_group(&client->dev.kobj, &vid_attr_group);
1429 data->hwmon_dev = hwmon_device_register(&client->dev);
1430 if (IS_ERR(data->hwmon_dev)) {
1431 ret = PTR_ERR(data->hwmon_dev);
1435 dev_info(&client->dev, "%s device, revision %d\n",
1436 names[id->driver_data], revision);
1437 if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2)
1438 dev_info(&client->dev, "Optional features:%s%s%s%s%s\n",
1439 (data->has_voltage & (1 << 0)) ? " in0" : "",
1440 (data->has_voltage & (1 << 4)) ? " in4" : "",
1441 data->has_fan4 ? " fan4" : "",
1442 data->has_pwm2 ? " pwm2" : "",
1443 data->has_vid ? " vid" : "");
1444 if (data->bypass_attn)
1445 dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n",
1446 (data->bypass_attn & (1 << 0)) ? " in0" : "",
1447 (data->bypass_attn & (1 << 1)) ? " in1" : "",
1448 (data->bypass_attn & (1 << 3)) ? " in3" : "",
1449 (data->bypass_attn & (1 << 4)) ? " in4" : "");
1454 adt7475_remove_files(client, data);
1458 static int adt7475_remove(struct i2c_client *client)
1460 struct adt7475_data *data = i2c_get_clientdata(client);
1462 hwmon_device_unregister(data->hwmon_dev);
1463 adt7475_remove_files(client, data);
1468 static struct i2c_driver adt7475_driver = {
1469 .class = I2C_CLASS_HWMON,
1472 .of_match_table = of_match_ptr(adt7475_of_match),
1474 .probe = adt7475_probe,
1475 .remove = adt7475_remove,
1476 .id_table = adt7475_id,
1477 .detect = adt7475_detect,
1478 .address_list = normal_i2c,
1481 static void adt7475_read_hystersis(struct i2c_client *client)
1483 struct adt7475_data *data = i2c_get_clientdata(client);
1485 data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
1486 data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0];
1487 data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);
1490 static void adt7475_read_pwm(struct i2c_client *client, int index)
1492 struct adt7475_data *data = i2c_get_clientdata(client);
1495 data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index));
1498 * Figure out the internal value for pwmctrl and pwmchan
1499 * based on the current settings
1501 v = (data->pwm[CONTROL][index] >> 5) & 7;
1504 data->pwmctl[index] = 0;
1506 data->pwmctl[index] = 1;
1509 * The fan is disabled - we don't want to
1510 * support that, so change to manual mode and
1511 * set the duty cycle to 0 instead
1513 data->pwm[INPUT][index] = 0;
1514 data->pwm[CONTROL][index] &= ~0xE0;
1515 data->pwm[CONTROL][index] |= (7 << 5);
1517 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1518 data->pwm[INPUT][index]);
1520 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1521 data->pwm[CONTROL][index]);
1523 data->pwmctl[index] = 1;
1525 data->pwmctl[index] = 2;
1529 data->pwmchan[index] = 1;
1532 data->pwmchan[index] = 2;
1535 data->pwmchan[index] = 4;
1538 data->pwmchan[index] = 6;
1541 data->pwmchan[index] = 7;
1547 static struct adt7475_data *adt7475_update_device(struct device *dev)
1549 struct i2c_client *client = to_i2c_client(dev);
1550 struct adt7475_data *data = i2c_get_clientdata(client);
1554 mutex_lock(&data->lock);
1556 /* Measurement values update every 2 seconds */
1557 if (time_after(jiffies, data->measure_updated + HZ * 2) ||
1559 data->alarms = adt7475_read(REG_STATUS2) << 8;
1560 data->alarms |= adt7475_read(REG_STATUS1);
1562 ext = (adt7475_read(REG_EXTEND2) << 8) |
1563 adt7475_read(REG_EXTEND1);
1564 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1565 if (!(data->has_voltage & (1 << i)))
1567 data->voltage[INPUT][i] =
1568 (adt7475_read(VOLTAGE_REG(i)) << 2) |
1569 ((ext >> (i * 2)) & 3);
1572 for (i = 0; i < ADT7475_TEMP_COUNT; i++)
1573 data->temp[INPUT][i] =
1574 (adt7475_read(TEMP_REG(i)) << 2) |
1575 ((ext >> ((i + 5) * 2)) & 3);
1577 if (data->has_voltage & (1 << 5)) {
1578 data->alarms |= adt7475_read(REG_STATUS4) << 24;
1579 ext = adt7475_read(REG_EXTEND3);
1580 data->voltage[INPUT][5] = adt7475_read(REG_VTT) << 2 |
1584 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1585 if (i == 3 && !data->has_fan4)
1587 data->tach[INPUT][i] =
1588 adt7475_read_word(client, TACH_REG(i));
1591 /* Updated by hw when in auto mode */
1592 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1593 if (i == 1 && !data->has_pwm2)
1595 data->pwm[INPUT][i] = adt7475_read(PWM_REG(i));
1599 data->vid = adt7475_read(REG_VID) & 0x3f;
1601 data->measure_updated = jiffies;
1604 /* Limits and settings, should never change update every 60 seconds */
1605 if (time_after(jiffies, data->limits_updated + HZ * 60) ||
1607 data->config4 = adt7475_read(REG_CONFIG4);
1608 data->config5 = adt7475_read(REG_CONFIG5);
1610 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1611 if (!(data->has_voltage & (1 << i)))
1613 /* Adjust values so they match the input precision */
1614 data->voltage[MIN][i] =
1615 adt7475_read(VOLTAGE_MIN_REG(i)) << 2;
1616 data->voltage[MAX][i] =
1617 adt7475_read(VOLTAGE_MAX_REG(i)) << 2;
1620 if (data->has_voltage & (1 << 5)) {
1621 data->voltage[MIN][5] = adt7475_read(REG_VTT_MIN) << 2;
1622 data->voltage[MAX][5] = adt7475_read(REG_VTT_MAX) << 2;
1625 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1626 /* Adjust values so they match the input precision */
1627 data->temp[MIN][i] =
1628 adt7475_read(TEMP_MIN_REG(i)) << 2;
1629 data->temp[MAX][i] =
1630 adt7475_read(TEMP_MAX_REG(i)) << 2;
1631 data->temp[AUTOMIN][i] =
1632 adt7475_read(TEMP_TMIN_REG(i)) << 2;
1633 data->temp[THERM][i] =
1634 adt7475_read(TEMP_THERM_REG(i)) << 2;
1635 data->temp[OFFSET][i] =
1636 adt7475_read(TEMP_OFFSET_REG(i));
1638 adt7475_read_hystersis(client);
1640 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1641 if (i == 3 && !data->has_fan4)
1643 data->tach[MIN][i] =
1644 adt7475_read_word(client, TACH_MIN_REG(i));
1647 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1648 if (i == 1 && !data->has_pwm2)
1650 data->pwm[MAX][i] = adt7475_read(PWM_MAX_REG(i));
1651 data->pwm[MIN][i] = adt7475_read(PWM_MIN_REG(i));
1652 /* Set the channel and control information */
1653 adt7475_read_pwm(client, i);
1656 data->range[0] = adt7475_read(TEMP_TRANGE_REG(0));
1657 data->range[1] = adt7475_read(TEMP_TRANGE_REG(1));
1658 data->range[2] = adt7475_read(TEMP_TRANGE_REG(2));
1660 data->limits_updated = jiffies;
1664 mutex_unlock(&data->lock);
1669 module_i2c_driver(adt7475_driver);
1671 MODULE_AUTHOR("Advanced Micro Devices, Inc");
1672 MODULE_DESCRIPTION("adt7475 driver");
1673 MODULE_LICENSE("GPL");